Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1988-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
0e9f083f | 23 | #include <string.h> |
c906108c SS |
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 | |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
53ce3c39 | 62 | #include <sys/stat.h> |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
d1feda86 | 70 | #include "agent.h" |
9accd112 | 71 | #include "btrace.h" |
35b1e5cc | 72 | |
0df8b418 | 73 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
74 | static char *target_buf; |
75 | static long target_buf_size; | |
35b1e5cc | 76 | |
6765f3e5 DJ |
77 | /* The size to align memory write packets, when practical. The protocol |
78 | does not guarantee any alignment, and gdb will generate short | |
79 | writes and unaligned writes, but even as a best-effort attempt this | |
80 | can improve bulk transfers. For instance, if a write is misaligned | |
81 | relative to the target's data bus, the stub may need to make an extra | |
82 | round trip fetching data from the target. This doesn't make a | |
83 | huge difference, but it's easy to do, so we try to be helpful. | |
84 | ||
85 | The alignment chosen is arbitrary; usually data bus width is | |
86 | important here, not the possibly larger cache line size. */ | |
87 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
88 | ||
23860348 | 89 | /* Prototypes for local functions. */ |
934b9bac | 90 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 91 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 92 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 93 | int forever, int *is_notif); |
6426a772 | 94 | |
934b9bac JK |
95 | static void async_handle_remote_sigint (int); |
96 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 97 | |
a14ed312 | 98 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 99 | |
f32dbf8c MM |
100 | static void remote_prepare_to_store (struct target_ops *self, |
101 | 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 | ||
934b9bac | 136 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 137 | |
a14ed312 | 138 | static void interrupt_query (void); |
c906108c | 139 | |
79d7f229 PA |
140 | static void set_general_thread (struct ptid ptid); |
141 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 142 | |
a14ed312 | 143 | static void get_offsets (void); |
c906108c | 144 | |
6d820c5c DJ |
145 | static void skip_frame (void); |
146 | ||
147 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 148 | |
a14ed312 | 149 | static int hexnumlen (ULONGEST num); |
c906108c | 150 | |
a14ed312 | 151 | static void init_remote_ops (void); |
c906108c | 152 | |
a14ed312 | 153 | static void init_extended_remote_ops (void); |
c906108c | 154 | |
94cc34af | 155 | static void remote_stop (ptid_t); |
c906108c | 156 | |
a14ed312 | 157 | static int ishex (int ch, int *val); |
c906108c | 158 | |
a14ed312 | 159 | static int stubhex (int ch); |
c906108c | 160 | |
a14ed312 | 161 | static int hexnumstr (char *, ULONGEST); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 164 | |
a14ed312 | 165 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 166 | |
a14ed312 | 167 | static void print_packet (char *); |
c906108c | 168 | |
a14ed312 | 169 | static void compare_sections_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void packet_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 174 | |
39f77062 | 175 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 176 | |
a14ed312 | 177 | static void remote_find_new_threads (void); |
c906108c | 178 | |
30559e10 | 179 | static int fromhex (int a); |
c906108c | 180 | |
a14ed312 | 181 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 182 | |
a14ed312 | 183 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 184 | |
5a2468f5 | 185 | struct packet_config; |
5a2468f5 | 186 | |
a14ed312 | 187 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 188 | |
d471ea57 | 189 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 190 | |
bb572ddd DJ |
191 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
192 | struct cmd_list_element *c); | |
193 | ||
194 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
195 | int from_tty, | |
196 | struct cmd_list_element *c, | |
197 | const char *value); | |
198 | ||
82f73884 PA |
199 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
200 | static ptid_t read_ptid (char *buf, char **obuf); | |
201 | ||
d914c394 SS |
202 | static void remote_set_permissions (void); |
203 | ||
d5551862 | 204 | struct remote_state; |
00bf0b85 | 205 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 206 | |
00bf0b85 SS |
207 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
208 | ||
209 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
210 | ||
c8d104ad PA |
211 | static void remote_query_supported (void); |
212 | ||
36d25514 | 213 | static void remote_check_symbols (void); |
c8d104ad | 214 | |
a14ed312 | 215 | void _initialize_remote (void); |
c906108c | 216 | |
74531fed | 217 | struct stop_reply; |
74531fed | 218 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 219 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 220 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 221 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
222 | static int peek_stop_reply (ptid_t ptid); |
223 | ||
224 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 225 | |
d3fd5342 PA |
226 | static void remote_terminal_ours (void); |
227 | ||
d962ef82 DJ |
228 | static int remote_read_description_p (struct target_ops *target); |
229 | ||
176a6961 | 230 | static void remote_console_output (char *msg); |
dde08ee1 | 231 | |
b775012e LM |
232 | static int remote_supports_cond_breakpoints (void); |
233 | ||
d3ce09f5 SS |
234 | static int remote_can_run_breakpoint_commands (void); |
235 | ||
a6b151f1 DJ |
236 | /* For "remote". */ |
237 | ||
238 | static struct cmd_list_element *remote_cmdlist; | |
239 | ||
bb572ddd DJ |
240 | /* For "set remote" and "show remote". */ |
241 | ||
242 | static struct cmd_list_element *remote_set_cmdlist; | |
243 | static struct cmd_list_element *remote_show_cmdlist; | |
244 | ||
d458bd84 PA |
245 | /* Stub vCont actions support. |
246 | ||
247 | Each field is a boolean flag indicating whether the stub reports | |
248 | support for the corresponding action. */ | |
249 | ||
250 | struct vCont_action_support | |
251 | { | |
252 | /* vCont;t */ | |
253 | int t; | |
c1e36e3e PA |
254 | |
255 | /* vCont;r */ | |
256 | int r; | |
d458bd84 PA |
257 | }; |
258 | ||
c1e36e3e PA |
259 | /* Controls whether GDB is willing to use range stepping. */ |
260 | ||
261 | static int use_range_stepping = 1; | |
262 | ||
0d031856 TT |
263 | #define OPAQUETHREADBYTES 8 |
264 | ||
265 | /* a 64 bit opaque identifier */ | |
266 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
267 | ||
268 | /* About this many threadisds fit in a packet. */ | |
269 | ||
270 | #define MAXTHREADLISTRESULTS 32 | |
271 | ||
ea9c271d DJ |
272 | /* Description of the remote protocol state for the currently |
273 | connected target. This is per-target state, and independent of the | |
274 | selected architecture. */ | |
275 | ||
276 | struct remote_state | |
277 | { | |
278 | /* A buffer to use for incoming packets, and its current size. The | |
279 | buffer is grown dynamically for larger incoming packets. | |
280 | Outgoing packets may also be constructed in this buffer. | |
281 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
282 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
283 | packets. */ | |
284 | char *buf; | |
285 | long buf_size; | |
be2a5f71 | 286 | |
1e51243a PA |
287 | /* True if we're going through initial connection setup (finding out |
288 | about the remote side's threads, relocating symbols, etc.). */ | |
289 | int starting_up; | |
290 | ||
be2a5f71 DJ |
291 | /* If we negotiated packet size explicitly (and thus can bypass |
292 | heuristics for the largest packet size that will not overflow | |
293 | a buffer in the stub), this will be set to that packet size. | |
294 | Otherwise zero, meaning to use the guessed size. */ | |
295 | long explicit_packet_size; | |
2d717e4f DJ |
296 | |
297 | /* remote_wait is normally called when the target is running and | |
298 | waits for a stop reply packet. But sometimes we need to call it | |
299 | when the target is already stopped. We can send a "?" packet | |
300 | and have remote_wait read the response. Or, if we already have | |
301 | the response, we can stash it in BUF and tell remote_wait to | |
302 | skip calling getpkt. This flag is set when BUF contains a | |
303 | stop reply packet and the target is not waiting. */ | |
304 | int cached_wait_status; | |
a6f3e723 SL |
305 | |
306 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
307 | expect acks from each other. The connection is assumed to be | |
308 | reliable. */ | |
309 | int noack_mode; | |
82f73884 PA |
310 | |
311 | /* True if we're connected in extended remote mode. */ | |
312 | int extended; | |
313 | ||
314 | /* True if the stub reported support for multi-process | |
315 | extensions. */ | |
316 | int multi_process_aware; | |
e24a49d8 PA |
317 | |
318 | /* True if we resumed the target and we're waiting for the target to | |
319 | stop. In the mean time, we can't start another command/query. | |
320 | The remote server wouldn't be ready to process it, so we'd | |
321 | timeout waiting for a reply that would never come and eventually | |
322 | we'd close the connection. This can happen in asynchronous mode | |
323 | because we allow GDB commands while the target is running. */ | |
324 | int waiting_for_stop_reply; | |
74531fed PA |
325 | |
326 | /* True if the stub reports support for non-stop mode. */ | |
327 | int non_stop_aware; | |
328 | ||
d458bd84 PA |
329 | /* The status of the stub support for the various vCont actions. */ |
330 | struct vCont_action_support supports_vCont; | |
782b2b07 SS |
331 | |
332 | /* True if the stub reports support for conditional tracepoints. */ | |
333 | int cond_tracepoints; | |
3a29589a | 334 | |
3788aec7 LM |
335 | /* True if the stub reports support for target-side breakpoint |
336 | conditions. */ | |
337 | int cond_breakpoints; | |
338 | ||
d3ce09f5 SS |
339 | /* True if the stub reports support for target-side breakpoint |
340 | commands. */ | |
341 | int breakpoint_commands; | |
342 | ||
7a697b8d SS |
343 | /* True if the stub reports support for fast tracepoints. */ |
344 | int fast_tracepoints; | |
345 | ||
0fb4aa4b PA |
346 | /* True if the stub reports support for static tracepoints. */ |
347 | int static_tracepoints; | |
348 | ||
1e4d1764 YQ |
349 | /* True if the stub reports support for installing tracepoint while |
350 | tracing. */ | |
351 | int install_in_trace; | |
352 | ||
d5551862 SS |
353 | /* True if the stub can continue running a trace while GDB is |
354 | disconnected. */ | |
355 | int disconnected_tracing; | |
356 | ||
d248b706 KY |
357 | /* True if the stub reports support for enabling and disabling |
358 | tracepoints while a trace experiment is running. */ | |
359 | int enable_disable_tracepoints; | |
360 | ||
3065dfb6 SS |
361 | /* True if the stub can collect strings using tracenz bytecode. */ |
362 | int string_tracing; | |
363 | ||
ced63ec0 GB |
364 | /* True if the stub supports qXfer:libraries-svr4:read with a |
365 | non-empty annex. */ | |
366 | int augmented_libraries_svr4_read; | |
367 | ||
3a29589a DJ |
368 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
369 | responded to that. */ | |
370 | int ctrlc_pending_p; | |
5d93a237 TT |
371 | |
372 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
373 | remote_open knows that we don't have a file open when the program | |
374 | starts. */ | |
375 | struct serial *remote_desc; | |
47f8a51d TT |
376 | |
377 | /* These are the threads which we last sent to the remote system. The | |
378 | TID member will be -1 for all or -2 for not sent yet. */ | |
379 | ptid_t general_thread; | |
380 | ptid_t continue_thread; | |
262e1174 TT |
381 | |
382 | /* This is the traceframe which we last selected on the remote system. | |
383 | It will be -1 if no traceframe is selected. */ | |
384 | int remote_traceframe_number; | |
747dc59d TT |
385 | |
386 | char *last_pass_packet; | |
5e4a05c4 TT |
387 | |
388 | /* The last QProgramSignals packet sent to the target. We bypass | |
389 | sending a new program signals list down to the target if the new | |
390 | packet is exactly the same as the last we sent. IOW, we only let | |
391 | the target know about program signals list changes. */ | |
392 | char *last_program_signals_packet; | |
b73be471 TT |
393 | |
394 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
395 | |
396 | int last_sent_step; | |
8e88304f TT |
397 | |
398 | char *finished_object; | |
399 | char *finished_annex; | |
400 | ULONGEST finished_offset; | |
b80fafe3 TT |
401 | |
402 | /* Should we try the 'ThreadInfo' query packet? | |
403 | ||
404 | This variable (NOT available to the user: auto-detect only!) | |
405 | determines whether GDB will use the new, simpler "ThreadInfo" | |
406 | query or the older, more complex syntax for thread queries. | |
407 | This is an auto-detect variable (set to true at each connect, | |
408 | and set to false when the target fails to recognize it). */ | |
409 | int use_threadinfo_query; | |
410 | int use_threadextra_query; | |
88b496c3 TT |
411 | |
412 | void (*async_client_callback) (enum inferior_event_type event_type, | |
413 | void *context); | |
414 | void *async_client_context; | |
ee154bee TT |
415 | |
416 | /* This is set to the data address of the access causing the target | |
417 | to stop for a watchpoint. */ | |
418 | CORE_ADDR remote_watch_data_address; | |
419 | ||
420 | /* This is non-zero if target stopped for a watchpoint. */ | |
421 | int remote_stopped_by_watchpoint_p; | |
0d031856 TT |
422 | |
423 | threadref echo_nextthread; | |
424 | threadref nextthread; | |
425 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
426 | |
427 | /* The state of remote notification. */ | |
428 | struct remote_notif_state *notif_state; | |
ea9c271d DJ |
429 | }; |
430 | ||
dc146f7c VP |
431 | /* Private data that we'll store in (struct thread_info)->private. */ |
432 | struct private_thread_info | |
433 | { | |
434 | char *extra; | |
435 | int core; | |
436 | }; | |
437 | ||
438 | static void | |
439 | free_private_thread_info (struct private_thread_info *info) | |
440 | { | |
441 | xfree (info->extra); | |
442 | xfree (info); | |
443 | } | |
444 | ||
82f73884 PA |
445 | /* Returns true if the multi-process extensions are in effect. */ |
446 | static int | |
447 | remote_multi_process_p (struct remote_state *rs) | |
448 | { | |
901f9912 | 449 | return rs->multi_process_aware; |
82f73884 PA |
450 | } |
451 | ||
ea9c271d DJ |
452 | /* This data could be associated with a target, but we do not always |
453 | have access to the current target when we need it, so for now it is | |
454 | static. This will be fine for as long as only one target is in use | |
455 | at a time. */ | |
cf792862 | 456 | static struct remote_state *remote_state; |
ea9c271d DJ |
457 | |
458 | static struct remote_state * | |
0b83947e | 459 | get_remote_state_raw (void) |
ea9c271d | 460 | { |
cf792862 TT |
461 | return remote_state; |
462 | } | |
463 | ||
464 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
465 | return it. */ | |
466 | ||
467 | static struct remote_state * | |
468 | new_remote_state (void) | |
469 | { | |
470 | struct remote_state *result = XCNEW (struct remote_state); | |
471 | ||
472 | /* The default buffer size is unimportant; it will be expanded | |
473 | whenever a larger buffer is needed. */ | |
474 | result->buf_size = 400; | |
475 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 476 | result->remote_traceframe_number = -1; |
b73be471 | 477 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
478 | |
479 | return result; | |
ea9c271d DJ |
480 | } |
481 | ||
482 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 483 | |
ad10f812 AC |
484 | struct packet_reg |
485 | { | |
486 | long offset; /* Offset into G packet. */ | |
487 | long regnum; /* GDB's internal register number. */ | |
488 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 489 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 490 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 491 | at present. */ |
f5656ead | 492 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 493 | at present. */ |
ad10f812 AC |
494 | }; |
495 | ||
ea9c271d | 496 | struct remote_arch_state |
d01949b6 | 497 | { |
ad10f812 AC |
498 | /* Description of the remote protocol registers. */ |
499 | long sizeof_g_packet; | |
b323314b AC |
500 | |
501 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 502 | (making an array gdbarch_num_regs in size). */ |
b323314b | 503 | struct packet_reg *regs; |
ad10f812 | 504 | |
d01949b6 AC |
505 | /* This is the size (in chars) of the first response to the ``g'' |
506 | packet. It is used as a heuristic when determining the maximum | |
507 | size of memory-read and memory-write packets. A target will | |
508 | typically only reserve a buffer large enough to hold the ``g'' | |
509 | packet. The size does not include packet overhead (headers and | |
23860348 | 510 | trailers). */ |
d01949b6 AC |
511 | long actual_register_packet_size; |
512 | ||
513 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 514 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
515 | long remote_packet_size; |
516 | }; | |
517 | ||
35b1e5cc SS |
518 | /* Utility: generate error from an incoming stub packet. */ |
519 | static void | |
520 | trace_error (char *buf) | |
521 | { | |
522 | if (*buf++ != 'E') | |
523 | return; /* not an error msg */ | |
524 | switch (*buf) | |
525 | { | |
526 | case '1': /* malformed packet error */ | |
527 | if (*++buf == '0') /* general case: */ | |
528 | error (_("remote.c: error in outgoing packet.")); | |
529 | else | |
530 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
531 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
532 | default: |
533 | error (_("Target returns error code '%s'."), buf); | |
534 | } | |
535 | } | |
536 | ||
537 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
538 | static char * | |
539 | remote_get_noisy_reply (char **buf_p, | |
540 | long *sizeof_buf) | |
541 | { | |
542 | do /* Loop on reply from remote stub. */ | |
543 | { | |
544 | char *buf; | |
a744cf53 | 545 | |
0df8b418 | 546 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
547 | getpkt (buf_p, sizeof_buf, 0); |
548 | buf = *buf_p; | |
ad91cd99 | 549 | if (buf[0] == 'E') |
35b1e5cc | 550 | trace_error (buf); |
dde08ee1 PA |
551 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
552 | { | |
553 | ULONGEST ul; | |
554 | CORE_ADDR from, to, org_to; | |
555 | char *p, *pp; | |
556 | int adjusted_size = 0; | |
557 | volatile struct gdb_exception ex; | |
558 | ||
559 | p = buf + strlen ("qRelocInsn:"); | |
560 | pp = unpack_varlen_hex (p, &ul); | |
561 | if (*pp != ';') | |
cb91c06a | 562 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
563 | from = ul; |
564 | ||
565 | p = pp + 1; | |
a9cbf802 | 566 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
567 | to = ul; |
568 | ||
569 | org_to = to; | |
570 | ||
571 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
572 | { | |
f5656ead | 573 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
574 | } |
575 | if (ex.reason >= 0) | |
576 | { | |
577 | adjusted_size = to - org_to; | |
578 | ||
bba74b36 | 579 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
580 | putpkt (buf); |
581 | } | |
582 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
583 | { | |
584 | /* Propagate memory errors silently back to the target. | |
585 | The stub may have limited the range of addresses we | |
586 | can write to, for example. */ | |
587 | putpkt ("E01"); | |
588 | } | |
589 | else | |
590 | { | |
591 | /* Something unexpectedly bad happened. Be verbose so | |
592 | we can tell what, and propagate the error back to the | |
593 | stub, so it doesn't get stuck waiting for a | |
594 | response. */ | |
595 | exception_fprintf (gdb_stderr, ex, | |
596 | _("warning: relocating instruction: ")); | |
597 | putpkt ("E01"); | |
598 | } | |
599 | } | |
ad91cd99 | 600 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
601 | remote_console_output (buf + 1); /* 'O' message from stub */ |
602 | else | |
0df8b418 | 603 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
604 | } |
605 | while (1); | |
606 | } | |
3c3bea1c | 607 | |
d01949b6 AC |
608 | /* Handle for retreving the remote protocol data from gdbarch. */ |
609 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
610 | ||
ea9c271d DJ |
611 | static struct remote_arch_state * |
612 | get_remote_arch_state (void) | |
d01949b6 | 613 | { |
f5656ead | 614 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
615 | } |
616 | ||
0b83947e DJ |
617 | /* Fetch the global remote target state. */ |
618 | ||
619 | static struct remote_state * | |
620 | get_remote_state (void) | |
621 | { | |
622 | /* Make sure that the remote architecture state has been | |
623 | initialized, because doing so might reallocate rs->buf. Any | |
624 | function which calls getpkt also needs to be mindful of changes | |
625 | to rs->buf, but this call limits the number of places which run | |
626 | into trouble. */ | |
627 | get_remote_arch_state (); | |
628 | ||
629 | return get_remote_state_raw (); | |
630 | } | |
631 | ||
74ca34ce DJ |
632 | static int |
633 | compare_pnums (const void *lhs_, const void *rhs_) | |
634 | { | |
635 | const struct packet_reg * const *lhs = lhs_; | |
636 | const struct packet_reg * const *rhs = rhs_; | |
637 | ||
638 | if ((*lhs)->pnum < (*rhs)->pnum) | |
639 | return -1; | |
640 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
641 | return 0; | |
642 | else | |
643 | return 1; | |
644 | } | |
645 | ||
c21236dc PA |
646 | static int |
647 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 648 | { |
74ca34ce | 649 | int regnum, num_remote_regs, offset; |
74ca34ce | 650 | struct packet_reg **remote_regs; |
ea9c271d | 651 | |
4a22f64d | 652 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 653 | { |
c21236dc | 654 | struct packet_reg *r = ®s[regnum]; |
baef701f | 655 | |
4a22f64d | 656 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
657 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
658 | r->pnum = -1; | |
659 | else | |
660 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
661 | ||
b323314b | 662 | r->regnum = regnum; |
74ca34ce DJ |
663 | } |
664 | ||
665 | /* Define the g/G packet format as the contents of each register | |
666 | with a remote protocol number, in order of ascending protocol | |
667 | number. */ | |
668 | ||
4a22f64d | 669 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 670 | * sizeof (struct packet_reg *)); |
f57d151a | 671 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 672 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 673 | regnum++) |
c21236dc PA |
674 | if (regs[regnum].pnum != -1) |
675 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 676 | |
74ca34ce DJ |
677 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
678 | compare_pnums); | |
679 | ||
680 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
681 | { | |
682 | remote_regs[regnum]->in_g_packet = 1; | |
683 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 684 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
685 | } |
686 | ||
c21236dc PA |
687 | return offset; |
688 | } | |
689 | ||
690 | /* Given the architecture described by GDBARCH, return the remote | |
691 | protocol register's number and the register's offset in the g/G | |
692 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
693 | If the target does not have a mapping for REGNUM, return false, | |
694 | otherwise, return true. */ | |
695 | ||
696 | int | |
697 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
698 | int *pnum, int *poffset) | |
699 | { | |
700 | int sizeof_g_packet; | |
701 | struct packet_reg *regs; | |
702 | struct cleanup *old_chain; | |
703 | ||
704 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
705 | ||
706 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
707 | old_chain = make_cleanup (xfree, regs); | |
708 | ||
709 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
710 | ||
711 | *pnum = regs[regnum].pnum; | |
712 | *poffset = regs[regnum].offset; | |
713 | ||
714 | do_cleanups (old_chain); | |
715 | ||
716 | return *pnum != -1; | |
717 | } | |
718 | ||
719 | static void * | |
720 | init_remote_state (struct gdbarch *gdbarch) | |
721 | { | |
722 | struct remote_state *rs = get_remote_state_raw (); | |
723 | struct remote_arch_state *rsa; | |
724 | ||
725 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
726 | ||
727 | /* Use the architecture to build a regnum<->pnum table, which will be | |
728 | 1:1 unless a feature set specifies otherwise. */ | |
729 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
730 | gdbarch_num_regs (gdbarch), | |
731 | struct packet_reg); | |
732 | ||
74ca34ce DJ |
733 | /* Record the maximum possible size of the g packet - it may turn out |
734 | to be smaller. */ | |
c21236dc | 735 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 736 | |
0df8b418 | 737 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
738 | remote stubs have a hardwired buffer size of 400 bytes |
739 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
740 | as the maximum packet-size to ensure that the packet and an extra | |
741 | NUL character can always fit in the buffer. This stops GDB | |
742 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
743 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
744 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 745 | |
ea9c271d DJ |
746 | /* This one is filled in when a ``g'' packet is received. */ |
747 | rsa->actual_register_packet_size = 0; | |
748 | ||
749 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
750 | default, adjust the size accordingly. Remember that each byte is |
751 | encoded as two characters. 32 is the overhead for the packet | |
752 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 753 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 754 | little. */ |
ea9c271d DJ |
755 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
756 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 757 | |
ea9c271d DJ |
758 | /* Make sure that the packet buffer is plenty big enough for |
759 | this architecture. */ | |
760 | if (rs->buf_size < rsa->remote_packet_size) | |
761 | { | |
762 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 763 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 764 | } |
6d820c5c | 765 | |
ea9c271d DJ |
766 | return rsa; |
767 | } | |
768 | ||
769 | /* Return the current allowed size of a remote packet. This is | |
770 | inferred from the current architecture, and should be used to | |
771 | limit the length of outgoing packets. */ | |
772 | static long | |
773 | get_remote_packet_size (void) | |
774 | { | |
be2a5f71 | 775 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
776 | struct remote_arch_state *rsa = get_remote_arch_state (); |
777 | ||
be2a5f71 DJ |
778 | if (rs->explicit_packet_size) |
779 | return rs->explicit_packet_size; | |
780 | ||
ea9c271d | 781 | return rsa->remote_packet_size; |
d01949b6 AC |
782 | } |
783 | ||
ad10f812 | 784 | static struct packet_reg * |
ea9c271d | 785 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 786 | { |
f5656ead | 787 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
788 | return NULL; |
789 | else | |
ad10f812 | 790 | { |
ea9c271d | 791 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 792 | |
b323314b AC |
793 | gdb_assert (r->regnum == regnum); |
794 | return r; | |
ad10f812 | 795 | } |
ad10f812 AC |
796 | } |
797 | ||
798 | static struct packet_reg * | |
ea9c271d | 799 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 800 | { |
b323314b | 801 | int i; |
a744cf53 | 802 | |
f5656ead | 803 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 804 | { |
ea9c271d | 805 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 806 | |
b323314b AC |
807 | if (r->pnum == pnum) |
808 | return r; | |
ad10f812 AC |
809 | } |
810 | return NULL; | |
d01949b6 AC |
811 | } |
812 | ||
c906108c SS |
813 | static struct target_ops remote_ops; |
814 | ||
815 | static struct target_ops extended_remote_ops; | |
816 | ||
6426a772 JM |
817 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
818 | ``forever'' still use the normal timeout mechanism. This is | |
819 | currently used by the ASYNC code to guarentee that target reads | |
820 | during the initial connect always time-out. Once getpkt has been | |
821 | modified to return a timeout indication and, in turn | |
822 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 823 | this can go away. */ |
6426a772 JM |
824 | static int wait_forever_enabled_p = 1; |
825 | ||
9a7071a8 JB |
826 | /* Allow the user to specify what sequence to send to the remote |
827 | when he requests a program interruption: Although ^C is usually | |
828 | what remote systems expect (this is the default, here), it is | |
829 | sometimes preferable to send a break. On other systems such | |
830 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
831 | is required in order to interrupt the execution. */ | |
832 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
833 | const char interrupt_sequence_break[] = "BREAK"; | |
834 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 835 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
836 | { |
837 | interrupt_sequence_control_c, | |
838 | interrupt_sequence_break, | |
839 | interrupt_sequence_break_g, | |
840 | NULL | |
841 | }; | |
842 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
843 | ||
844 | static void | |
845 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
846 | struct cmd_list_element *c, | |
847 | const char *value) | |
848 | { | |
849 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
850 | fprintf_filtered (file, | |
851 | _("Send the ASCII ETX character (Ctrl-c) " | |
852 | "to the remote target to interrupt the " | |
853 | "execution of the program.\n")); | |
854 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
855 | fprintf_filtered (file, | |
856 | _("send a break signal to the remote target " | |
857 | "to interrupt the execution of the program.\n")); | |
858 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
859 | fprintf_filtered (file, | |
860 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
861 | "the remote target to interrupt the execution " | |
862 | "of Linux kernel.\n")); | |
863 | else | |
864 | internal_error (__FILE__, __LINE__, | |
865 | _("Invalid value for interrupt_sequence_mode: %s."), | |
866 | interrupt_sequence_mode); | |
867 | } | |
6426a772 | 868 | |
9a7071a8 JB |
869 | /* This boolean variable specifies whether interrupt_sequence is sent |
870 | to the remote target when gdb connects to it. | |
871 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
872 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
873 | static int interrupt_on_connect = 0; | |
c906108c | 874 | |
9a7071a8 JB |
875 | /* This variable is used to implement the "set/show remotebreak" commands. |
876 | Since these commands are now deprecated in favor of "set/show remote | |
877 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
878 | static int remote_break; |
879 | ||
9a7071a8 JB |
880 | static void |
881 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
882 | { | |
883 | if (remote_break) | |
884 | interrupt_sequence_mode = interrupt_sequence_break; | |
885 | else | |
886 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
887 | } | |
888 | ||
889 | static void | |
890 | show_remotebreak (struct ui_file *file, int from_tty, | |
891 | struct cmd_list_element *c, | |
892 | const char *value) | |
893 | { | |
894 | } | |
895 | ||
c906108c SS |
896 | /* This variable sets the number of bits in an address that are to be |
897 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 898 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
899 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
900 | initial implementation of remote.c restricted the address sent in | |
901 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
902 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
903 | address was never sent. Since fixing this bug may cause a break in | |
904 | some remote targets this variable is principly provided to | |
23860348 | 905 | facilitate backward compatibility. */ |
c906108c | 906 | |
883b9c6c | 907 | static unsigned int remote_address_size; |
c906108c | 908 | |
75c99385 PA |
909 | /* Temporary to track who currently owns the terminal. See |
910 | remote_terminal_* for more details. */ | |
6426a772 JM |
911 | |
912 | static int remote_async_terminal_ours_p; | |
913 | ||
2d717e4f DJ |
914 | /* The executable file to use for "run" on the remote side. */ |
915 | ||
916 | static char *remote_exec_file = ""; | |
917 | ||
11cf8741 | 918 | \f |
11cf8741 | 919 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
920 | memory read/write packet. MIN (rsa->remote_packet_size, |
921 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 922 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
923 | (speed up transfers). The variables ``preferred_*'' (the user |
924 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 925 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
926 | |
927 | struct memory_packet_config | |
928 | { | |
929 | char *name; | |
930 | long size; | |
931 | int fixed_p; | |
932 | }; | |
933 | ||
934 | /* Compute the current size of a read/write packet. Since this makes | |
935 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
936 | ||
937 | static long | |
938 | get_memory_packet_size (struct memory_packet_config *config) | |
939 | { | |
d01949b6 | 940 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
941 | struct remote_arch_state *rsa = get_remote_arch_state (); |
942 | ||
11cf8741 JM |
943 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
944 | law?) that some hosts don't cope very well with large alloca() | |
945 | calls. Eventually the alloca() code will be replaced by calls to | |
946 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 947 | be lifted or removed. */ |
11cf8741 JM |
948 | #ifndef MAX_REMOTE_PACKET_SIZE |
949 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
950 | #endif | |
3de11b2e | 951 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 952 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 953 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
954 | #endif |
955 | long what_they_get; | |
956 | if (config->fixed_p) | |
957 | { | |
958 | if (config->size <= 0) | |
959 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
960 | else | |
961 | what_they_get = config->size; | |
962 | } | |
963 | else | |
964 | { | |
ea9c271d | 965 | what_they_get = get_remote_packet_size (); |
23860348 | 966 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
967 | if (config->size > 0 |
968 | && what_they_get > config->size) | |
969 | what_they_get = config->size; | |
be2a5f71 DJ |
970 | |
971 | /* Limit it to the size of the targets ``g'' response unless we have | |
972 | permission from the stub to use a larger packet size. */ | |
973 | if (rs->explicit_packet_size == 0 | |
974 | && rsa->actual_register_packet_size > 0 | |
975 | && what_they_get > rsa->actual_register_packet_size) | |
976 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
977 | } |
978 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
979 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
980 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
981 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
982 | |
983 | /* Make sure there is room in the global buffer for this packet | |
984 | (including its trailing NUL byte). */ | |
985 | if (rs->buf_size < what_they_get + 1) | |
986 | { | |
987 | rs->buf_size = 2 * what_they_get; | |
988 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
989 | } | |
990 | ||
11cf8741 JM |
991 | return what_they_get; |
992 | } | |
993 | ||
0df8b418 | 994 | /* Update the size of a read/write packet. If they user wants |
23860348 | 995 | something really big then do a sanity check. */ |
11cf8741 JM |
996 | |
997 | static void | |
998 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
999 | { | |
1000 | int fixed_p = config->fixed_p; | |
1001 | long size = config->size; | |
a744cf53 | 1002 | |
11cf8741 | 1003 | if (args == NULL) |
8a3fe4f8 | 1004 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1005 | else if (strcmp (args, "hard") == 0 |
1006 | || strcmp (args, "fixed") == 0) | |
1007 | fixed_p = 1; | |
1008 | else if (strcmp (args, "soft") == 0 | |
1009 | || strcmp (args, "limit") == 0) | |
1010 | fixed_p = 0; | |
1011 | else | |
1012 | { | |
1013 | char *end; | |
a744cf53 | 1014 | |
11cf8741 JM |
1015 | size = strtoul (args, &end, 0); |
1016 | if (args == end) | |
8a3fe4f8 | 1017 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
1018 | #if 0 |
1019 | /* Instead of explicitly capping the size of a packet to | |
1020 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1021 | instead allowed to set the size to something arbitrarily | |
23860348 | 1022 | large. */ |
11cf8741 | 1023 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 1024 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
1025 | #endif |
1026 | } | |
23860348 | 1027 | /* Extra checks? */ |
11cf8741 JM |
1028 | if (fixed_p && !config->fixed_p) |
1029 | { | |
e2e0b3e5 AC |
1030 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1031 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1032 | config->name, size)) |
8a3fe4f8 | 1033 | error (_("Packet size not changed.")); |
11cf8741 | 1034 | } |
23860348 | 1035 | /* Update the config. */ |
11cf8741 JM |
1036 | config->fixed_p = fixed_p; |
1037 | config->size = size; | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | show_memory_packet_size (struct memory_packet_config *config) | |
1042 | { | |
a3f17187 | 1043 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1044 | if (config->fixed_p) |
a3f17187 | 1045 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1046 | get_memory_packet_size (config)); |
1047 | else | |
a3f17187 | 1048 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1049 | get_memory_packet_size (config)); |
1050 | } | |
1051 | ||
1052 | static struct memory_packet_config memory_write_packet_config = | |
1053 | { | |
1054 | "memory-write-packet-size", | |
1055 | }; | |
1056 | ||
1057 | static void | |
1058 | set_memory_write_packet_size (char *args, int from_tty) | |
1059 | { | |
1060 | set_memory_packet_size (args, &memory_write_packet_config); | |
1061 | } | |
1062 | ||
1063 | static void | |
1064 | show_memory_write_packet_size (char *args, int from_tty) | |
1065 | { | |
1066 | show_memory_packet_size (&memory_write_packet_config); | |
1067 | } | |
1068 | ||
1069 | static long | |
1070 | get_memory_write_packet_size (void) | |
1071 | { | |
1072 | return get_memory_packet_size (&memory_write_packet_config); | |
1073 | } | |
1074 | ||
1075 | static struct memory_packet_config memory_read_packet_config = | |
1076 | { | |
1077 | "memory-read-packet-size", | |
1078 | }; | |
1079 | ||
1080 | static void | |
1081 | set_memory_read_packet_size (char *args, int from_tty) | |
1082 | { | |
1083 | set_memory_packet_size (args, &memory_read_packet_config); | |
1084 | } | |
1085 | ||
1086 | static void | |
1087 | show_memory_read_packet_size (char *args, int from_tty) | |
1088 | { | |
1089 | show_memory_packet_size (&memory_read_packet_config); | |
1090 | } | |
1091 | ||
1092 | static long | |
1093 | get_memory_read_packet_size (void) | |
1094 | { | |
1095 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1096 | |
11cf8741 JM |
1097 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1098 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1099 | increased beyond this. */ |
1100 | if (size > get_remote_packet_size ()) | |
1101 | size = get_remote_packet_size (); | |
11cf8741 JM |
1102 | return size; |
1103 | } | |
1104 | ||
11cf8741 | 1105 | \f |
5a2468f5 | 1106 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1107 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1108 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1109 | |
1110 | enum packet_support | |
1111 | { | |
1112 | PACKET_SUPPORT_UNKNOWN = 0, | |
1113 | PACKET_ENABLE, | |
1114 | PACKET_DISABLE | |
1115 | }; | |
1116 | ||
5a2468f5 JM |
1117 | struct packet_config |
1118 | { | |
bb572ddd DJ |
1119 | const char *name; |
1120 | const char *title; | |
7f19b9a2 | 1121 | enum auto_boolean detect; |
5a2468f5 JM |
1122 | enum packet_support support; |
1123 | }; | |
1124 | ||
d471ea57 | 1125 | /* Analyze a packet's return value and update the packet config |
23860348 | 1126 | accordingly. */ |
d471ea57 AC |
1127 | |
1128 | enum packet_result | |
1129 | { | |
1130 | PACKET_ERROR, | |
1131 | PACKET_OK, | |
1132 | PACKET_UNKNOWN | |
1133 | }; | |
1134 | ||
5a2468f5 | 1135 | static void |
d471ea57 | 1136 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1137 | { |
d471ea57 AC |
1138 | switch (config->detect) |
1139 | { | |
7f19b9a2 | 1140 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1141 | config->support = PACKET_ENABLE; |
1142 | break; | |
7f19b9a2 | 1143 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1144 | config->support = PACKET_DISABLE; |
1145 | break; | |
7f19b9a2 | 1146 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1147 | config->support = PACKET_SUPPORT_UNKNOWN; |
1148 | break; | |
1149 | } | |
5a2468f5 JM |
1150 | } |
1151 | ||
1152 | static void | |
fba45db2 | 1153 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1154 | { |
1155 | char *support = "internal-error"; | |
a744cf53 | 1156 | |
5a2468f5 JM |
1157 | switch (config->support) |
1158 | { | |
1159 | case PACKET_ENABLE: | |
1160 | support = "enabled"; | |
1161 | break; | |
1162 | case PACKET_DISABLE: | |
1163 | support = "disabled"; | |
1164 | break; | |
1165 | case PACKET_SUPPORT_UNKNOWN: | |
1166 | support = "unknown"; | |
1167 | break; | |
1168 | } | |
1169 | switch (config->detect) | |
1170 | { | |
7f19b9a2 | 1171 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1172 | printf_filtered (_("Support for the `%s' packet " |
1173 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1174 | config->name, support); |
5a2468f5 | 1175 | break; |
7f19b9a2 AC |
1176 | case AUTO_BOOLEAN_TRUE: |
1177 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1178 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1179 | config->name, support); | |
8e248173 | 1180 | break; |
5a2468f5 JM |
1181 | } |
1182 | } | |
1183 | ||
1184 | static void | |
bb572ddd DJ |
1185 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1186 | const char *title, int legacy) | |
d471ea57 | 1187 | { |
5a2468f5 JM |
1188 | char *set_doc; |
1189 | char *show_doc; | |
d471ea57 | 1190 | char *cmd_name; |
3ed07be4 | 1191 | |
5a2468f5 JM |
1192 | config->name = name; |
1193 | config->title = title; | |
7f19b9a2 | 1194 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1195 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1196 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1197 | name, title); | |
3e43a32a MS |
1198 | show_doc = xstrprintf ("Show current use of remote " |
1199 | "protocol `%s' (%s) packet", | |
b435e160 | 1200 | name, title); |
d471ea57 | 1201 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1202 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1203 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1204 | &config->detect, set_doc, |
1205 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1206 | set_remote_protocol_packet_cmd, |
1207 | show_remote_protocol_packet_cmd, | |
1208 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1209 | /* The command code copies the documentation strings. */ |
1210 | xfree (set_doc); | |
1211 | xfree (show_doc); | |
23860348 | 1212 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1213 | if (legacy) |
1214 | { | |
1215 | char *legacy_name; | |
a744cf53 | 1216 | |
b435e160 | 1217 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1218 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1219 | &remote_set_cmdlist); |
d471ea57 | 1220 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1221 | &remote_show_cmdlist); |
d471ea57 | 1222 | } |
5a2468f5 JM |
1223 | } |
1224 | ||
d471ea57 | 1225 | static enum packet_result |
a76d924d | 1226 | packet_check_result (const char *buf) |
5a2468f5 | 1227 | { |
d471ea57 | 1228 | if (buf[0] != '\0') |
5a2468f5 | 1229 | { |
d471ea57 | 1230 | /* The stub recognized the packet request. Check that the |
23860348 | 1231 | operation succeeded. */ |
a76d924d DJ |
1232 | if (buf[0] == 'E' |
1233 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1234 | && buf[3] == '\0') | |
1235 | /* "Enn" - definitly an error. */ | |
1236 | return PACKET_ERROR; | |
1237 | ||
1238 | /* Always treat "E." as an error. This will be used for | |
1239 | more verbose error messages, such as E.memtypes. */ | |
1240 | if (buf[0] == 'E' && buf[1] == '.') | |
1241 | return PACKET_ERROR; | |
1242 | ||
1243 | /* The packet may or may not be OK. Just assume it is. */ | |
1244 | return PACKET_OK; | |
1245 | } | |
1246 | else | |
1247 | /* The stub does not support the packet. */ | |
1248 | return PACKET_UNKNOWN; | |
1249 | } | |
1250 | ||
1251 | static enum packet_result | |
1252 | packet_ok (const char *buf, struct packet_config *config) | |
1253 | { | |
1254 | enum packet_result result; | |
1255 | ||
1256 | result = packet_check_result (buf); | |
1257 | switch (result) | |
1258 | { | |
1259 | case PACKET_OK: | |
1260 | case PACKET_ERROR: | |
1261 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1262 | switch (config->support) |
1263 | { | |
1264 | case PACKET_SUPPORT_UNKNOWN: | |
1265 | if (remote_debug) | |
1266 | fprintf_unfiltered (gdb_stdlog, | |
1267 | "Packet %s (%s) is supported\n", | |
1268 | config->name, config->title); | |
1269 | config->support = PACKET_ENABLE; | |
1270 | break; | |
1271 | case PACKET_DISABLE: | |
8e65ff28 | 1272 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1273 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1274 | break; |
1275 | case PACKET_ENABLE: | |
1276 | break; | |
1277 | } | |
a76d924d DJ |
1278 | break; |
1279 | case PACKET_UNKNOWN: | |
23860348 | 1280 | /* The stub does not support the packet. */ |
d471ea57 AC |
1281 | switch (config->support) |
1282 | { | |
1283 | case PACKET_ENABLE: | |
7f19b9a2 | 1284 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1285 | /* If the stub previously indicated that the packet was |
23860348 | 1286 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1287 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1288 | config->name, config->title); |
1289 | else | |
23860348 | 1290 | /* The user set it wrong. */ |
8a3fe4f8 | 1291 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1292 | config->name, config->title); |
1293 | break; | |
1294 | case PACKET_SUPPORT_UNKNOWN: | |
1295 | if (remote_debug) | |
1296 | fprintf_unfiltered (gdb_stdlog, | |
1297 | "Packet %s (%s) is NOT supported\n", | |
1298 | config->name, config->title); | |
1299 | config->support = PACKET_DISABLE; | |
1300 | break; | |
1301 | case PACKET_DISABLE: | |
1302 | break; | |
1303 | } | |
a76d924d | 1304 | break; |
5a2468f5 | 1305 | } |
a76d924d DJ |
1306 | |
1307 | return result; | |
5a2468f5 JM |
1308 | } |
1309 | ||
444abaca DJ |
1310 | enum { |
1311 | PACKET_vCont = 0, | |
1312 | PACKET_X, | |
1313 | PACKET_qSymbol, | |
1314 | PACKET_P, | |
1315 | PACKET_p, | |
1316 | PACKET_Z0, | |
1317 | PACKET_Z1, | |
1318 | PACKET_Z2, | |
1319 | PACKET_Z3, | |
1320 | PACKET_Z4, | |
a6b151f1 DJ |
1321 | PACKET_vFile_open, |
1322 | PACKET_vFile_pread, | |
1323 | PACKET_vFile_pwrite, | |
1324 | PACKET_vFile_close, | |
1325 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1326 | PACKET_vFile_readlink, |
0876f84a | 1327 | PACKET_qXfer_auxv, |
23181151 | 1328 | PACKET_qXfer_features, |
cfa9d6d9 | 1329 | PACKET_qXfer_libraries, |
2268b414 | 1330 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1331 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1332 | PACKET_qXfer_spu_read, |
1333 | PACKET_qXfer_spu_write, | |
07e059b5 | 1334 | PACKET_qXfer_osdata, |
dc146f7c | 1335 | PACKET_qXfer_threads, |
0fb4aa4b | 1336 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1337 | PACKET_qXfer_traceframe_info, |
169081d0 | 1338 | PACKET_qXfer_uib, |
711e434b | 1339 | PACKET_qGetTIBAddr, |
444abaca | 1340 | PACKET_qGetTLSAddr, |
be2a5f71 | 1341 | PACKET_qSupported, |
bd3eecc3 | 1342 | PACKET_qTStatus, |
89be2091 | 1343 | PACKET_QPassSignals, |
9b224c5e | 1344 | PACKET_QProgramSignals, |
08388c79 | 1345 | PACKET_qSearch_memory, |
2d717e4f DJ |
1346 | PACKET_vAttach, |
1347 | PACKET_vRun, | |
a6f3e723 | 1348 | PACKET_QStartNoAckMode, |
82f73884 | 1349 | PACKET_vKill, |
4aa995e1 PA |
1350 | PACKET_qXfer_siginfo_read, |
1351 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1352 | PACKET_qAttached, |
782b2b07 | 1353 | PACKET_ConditionalTracepoints, |
3788aec7 | 1354 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1355 | PACKET_BreakpointCommands, |
7a697b8d | 1356 | PACKET_FastTracepoints, |
0fb4aa4b | 1357 | PACKET_StaticTracepoints, |
1e4d1764 | 1358 | PACKET_InstallInTrace, |
40ab02ce MS |
1359 | PACKET_bc, |
1360 | PACKET_bs, | |
409873ef | 1361 | PACKET_TracepointSource, |
d914c394 | 1362 | PACKET_QAllow, |
78d85199 | 1363 | PACKET_qXfer_fdpic, |
03583c20 | 1364 | PACKET_QDisableRandomization, |
d1feda86 | 1365 | PACKET_QAgent, |
f6f899bf | 1366 | PACKET_QTBuffer_size, |
9accd112 MM |
1367 | PACKET_Qbtrace_off, |
1368 | PACKET_Qbtrace_bts, | |
1369 | PACKET_qXfer_btrace, | |
444abaca DJ |
1370 | PACKET_MAX |
1371 | }; | |
506fb367 | 1372 | |
444abaca | 1373 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1374 | |
1375 | static void | |
444abaca DJ |
1376 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1377 | struct cmd_list_element *c) | |
dc8acb97 | 1378 | { |
444abaca | 1379 | struct packet_config *packet; |
dc8acb97 | 1380 | |
444abaca DJ |
1381 | for (packet = remote_protocol_packets; |
1382 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1383 | packet++) | |
1384 | { | |
1385 | if (&packet->detect == c->var) | |
1386 | { | |
1387 | update_packet_config (packet); | |
1388 | return; | |
1389 | } | |
1390 | } | |
9b20d036 | 1391 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1392 | c->name); |
dc8acb97 MS |
1393 | } |
1394 | ||
5a2468f5 | 1395 | static void |
444abaca DJ |
1396 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1397 | struct cmd_list_element *c, | |
1398 | const char *value) | |
5a2468f5 | 1399 | { |
444abaca | 1400 | struct packet_config *packet; |
5a2468f5 | 1401 | |
444abaca DJ |
1402 | for (packet = remote_protocol_packets; |
1403 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1404 | packet++) | |
1405 | { | |
1406 | if (&packet->detect == c->var) | |
1407 | { | |
1408 | show_packet_config_cmd (packet); | |
1409 | return; | |
1410 | } | |
1411 | } | |
9b20d036 | 1412 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1413 | c->name); |
5a2468f5 JM |
1414 | } |
1415 | ||
d471ea57 AC |
1416 | /* Should we try one of the 'Z' requests? */ |
1417 | ||
1418 | enum Z_packet_type | |
1419 | { | |
1420 | Z_PACKET_SOFTWARE_BP, | |
1421 | Z_PACKET_HARDWARE_BP, | |
1422 | Z_PACKET_WRITE_WP, | |
1423 | Z_PACKET_READ_WP, | |
1424 | Z_PACKET_ACCESS_WP, | |
1425 | NR_Z_PACKET_TYPES | |
1426 | }; | |
96baa820 | 1427 | |
d471ea57 | 1428 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1429 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1430 | |
7f19b9a2 | 1431 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1432 | |
1433 | static void | |
fba45db2 KB |
1434 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1435 | struct cmd_list_element *c) | |
96baa820 | 1436 | { |
d471ea57 | 1437 | int i; |
a744cf53 | 1438 | |
d471ea57 AC |
1439 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1440 | { | |
444abaca DJ |
1441 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1442 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1443 | } |
96baa820 JM |
1444 | } |
1445 | ||
1446 | static void | |
08546159 AC |
1447 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1448 | struct cmd_list_element *c, | |
1449 | const char *value) | |
96baa820 | 1450 | { |
d471ea57 | 1451 | int i; |
a744cf53 | 1452 | |
d471ea57 AC |
1453 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1454 | { | |
444abaca | 1455 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1456 | } |
96baa820 JM |
1457 | } |
1458 | ||
23860348 | 1459 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1460 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1461 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1462 | |
74531fed PA |
1463 | \f |
1464 | /* Asynchronous signal handle registered as event loop source for | |
1465 | when we have pending events ready to be passed to the core. */ | |
1466 | ||
1467 | static struct async_event_handler *remote_async_inferior_event_token; | |
1468 | ||
c906108c SS |
1469 | \f |
1470 | ||
79d7f229 PA |
1471 | static ptid_t magic_null_ptid; |
1472 | static ptid_t not_sent_ptid; | |
1473 | static ptid_t any_thread_ptid; | |
1474 | ||
0b16c5cf PA |
1475 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1476 | detach instead of killing it when bailing out). */ | |
1477 | ||
1478 | static int | |
1479 | remote_query_attached (int pid) | |
1480 | { | |
1481 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1482 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1483 | |
1484 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1485 | return 0; | |
1486 | ||
1487 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1488 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1489 | else |
bba74b36 | 1490 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1491 | |
1492 | putpkt (rs->buf); | |
1493 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1494 | ||
1495 | switch (packet_ok (rs->buf, | |
1554e9be | 1496 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1497 | { |
1498 | case PACKET_OK: | |
1499 | if (strcmp (rs->buf, "1") == 0) | |
1500 | return 1; | |
1501 | break; | |
1502 | case PACKET_ERROR: | |
1503 | warning (_("Remote failure reply: %s"), rs->buf); | |
1504 | break; | |
1505 | case PACKET_UNKNOWN: | |
1506 | break; | |
1507 | } | |
1508 | ||
1509 | return 0; | |
1510 | } | |
1511 | ||
49c62f2e PA |
1512 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1513 | has been invented by GDB, instead of reported by the target. Since | |
1514 | we can be connected to a remote system before before knowing about | |
1515 | any inferior, mark the target with execution when we find the first | |
1516 | inferior. If ATTACHED is 1, then we had just attached to this | |
1517 | inferior. If it is 0, then we just created this inferior. If it | |
1518 | is -1, then try querying the remote stub to find out if it had | |
1519 | attached to the inferior or not. */ | |
1941c569 PA |
1520 | |
1521 | static struct inferior * | |
49c62f2e | 1522 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1523 | { |
1941c569 PA |
1524 | struct inferior *inf; |
1525 | ||
0b16c5cf PA |
1526 | /* Check whether this process we're learning about is to be |
1527 | considered attached, or if is to be considered to have been | |
1528 | spawned by the stub. */ | |
1529 | if (attached == -1) | |
1530 | attached = remote_query_attached (pid); | |
1531 | ||
f5656ead | 1532 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1533 | { |
1534 | /* If the target shares code across all inferiors, then every | |
1535 | attach adds a new inferior. */ | |
1536 | inf = add_inferior (pid); | |
1537 | ||
1538 | /* ... and every inferior is bound to the same program space. | |
1539 | However, each inferior may still have its own address | |
1540 | space. */ | |
1541 | inf->aspace = maybe_new_address_space (); | |
1542 | inf->pspace = current_program_space; | |
1543 | } | |
1544 | else | |
1545 | { | |
1546 | /* In the traditional debugging scenario, there's a 1-1 match | |
1547 | between program/address spaces. We simply bind the inferior | |
1548 | to the program space's address space. */ | |
1549 | inf = current_inferior (); | |
1550 | inferior_appeared (inf, pid); | |
1551 | } | |
1941c569 | 1552 | |
0b16c5cf | 1553 | inf->attach_flag = attached; |
49c62f2e | 1554 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1555 | |
1941c569 PA |
1556 | return inf; |
1557 | } | |
1558 | ||
1559 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1560 | according to RUNNING. */ | |
1561 | ||
c906108c | 1562 | static void |
1941c569 | 1563 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1564 | { |
b7ea362b PA |
1565 | struct remote_state *rs = get_remote_state (); |
1566 | ||
1567 | /* GDB historically didn't pull threads in the initial connection | |
1568 | setup. If the remote target doesn't even have a concept of | |
1569 | threads (e.g., a bare-metal target), even if internally we | |
1570 | consider that a single-threaded target, mentioning a new thread | |
1571 | might be confusing to the user. Be silent then, preserving the | |
1572 | age old behavior. */ | |
1573 | if (rs->starting_up) | |
1574 | add_thread_silent (ptid); | |
1575 | else | |
1576 | add_thread (ptid); | |
1941c569 PA |
1577 | |
1578 | set_executing (ptid, running); | |
1579 | set_running (ptid, running); | |
1580 | } | |
1581 | ||
1582 | /* Come here when we learn about a thread id from the remote target. | |
1583 | It may be the first time we hear about such thread, so take the | |
1584 | opportunity to add it to GDB's thread list. In case this is the | |
1585 | first time we're noticing its corresponding inferior, add it to | |
1586 | GDB's inferior list as well. */ | |
1587 | ||
1588 | static void | |
1589 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1590 | { | |
c906108c SS |
1591 | /* If this is a new thread, add it to GDB's thread list. |
1592 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1593 | |
1594 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1595 | { | |
1596 | /* We're seeing an event on a thread id we knew had exited. | |
1597 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1598 | remote_add_thread (currthread, running); |
82f73884 PA |
1599 | return; |
1600 | } | |
1601 | ||
79d7f229 | 1602 | if (!in_thread_list (currthread)) |
c0a2216e | 1603 | { |
1941c569 | 1604 | struct inferior *inf = NULL; |
bad34192 | 1605 | int pid = ptid_get_pid (currthread); |
1941c569 | 1606 | |
bad34192 PA |
1607 | if (ptid_is_pid (inferior_ptid) |
1608 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1609 | { |
1610 | /* inferior_ptid has no thread member yet. This can happen | |
1611 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1612 | stub doesn't support qC. This is the first stop reported | |
1613 | after an attach, so this is the main thread. Update the | |
1614 | ptid in the thread list. */ | |
bad34192 PA |
1615 | if (in_thread_list (pid_to_ptid (pid))) |
1616 | thread_change_ptid (inferior_ptid, currthread); | |
1617 | else | |
1618 | { | |
1619 | remote_add_thread (currthread, running); | |
1620 | inferior_ptid = currthread; | |
1621 | } | |
dc146f7c | 1622 | return; |
c0a2216e | 1623 | } |
82f73884 PA |
1624 | |
1625 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1626 | { |
1627 | /* inferior_ptid is not set yet. This can happen with the | |
1628 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1629 | doesn't support qC. This is the first stop reported | |
1630 | after an attach, so this is the main thread. Update the | |
1631 | ptid in the thread list. */ | |
dc146f7c | 1632 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1633 | return; |
c0a2216e | 1634 | } |
82f73884 | 1635 | |
29c87f7f PA |
1636 | /* When connecting to a target remote, or to a target |
1637 | extended-remote which already was debugging an inferior, we | |
1638 | may not know about it yet. Add it before adding its child | |
1639 | thread, so notifications are emitted in a sensible order. */ | |
1640 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1641 | { |
1642 | struct remote_state *rs = get_remote_state (); | |
1643 | int fake_pid_p = !remote_multi_process_p (rs); | |
1644 | ||
1645 | inf = remote_add_inferior (fake_pid_p, | |
1646 | ptid_get_pid (currthread), -1); | |
1647 | } | |
29c87f7f | 1648 | |
82f73884 | 1649 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1650 | remote_add_thread (currthread, running); |
1651 | ||
1652 | /* If we found a new inferior, let the common code do whatever | |
1653 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1654 | breakpoints), unless we're just setting up an all-stop |
1655 | connection. */ | |
1941c569 | 1656 | if (inf != NULL) |
b7ea362b PA |
1657 | { |
1658 | struct remote_state *rs = get_remote_state (); | |
1659 | ||
1660 | if (non_stop || !rs->starting_up) | |
1661 | notice_new_inferior (currthread, running, 0); | |
1662 | } | |
c0a2216e | 1663 | } |
c906108c SS |
1664 | } |
1665 | ||
dc146f7c VP |
1666 | /* Return the private thread data, creating it if necessary. */ |
1667 | ||
70221824 | 1668 | static struct private_thread_info * |
dc146f7c VP |
1669 | demand_private_info (ptid_t ptid) |
1670 | { | |
1671 | struct thread_info *info = find_thread_ptid (ptid); | |
1672 | ||
1673 | gdb_assert (info); | |
1674 | ||
1675 | if (!info->private) | |
1676 | { | |
1677 | info->private = xmalloc (sizeof (*(info->private))); | |
1678 | info->private_dtor = free_private_thread_info; | |
1679 | info->private->core = -1; | |
1680 | info->private->extra = 0; | |
1681 | } | |
1682 | ||
1683 | return info->private; | |
1684 | } | |
1685 | ||
74531fed PA |
1686 | /* Call this function as a result of |
1687 | 1) A halt indication (T packet) containing a thread id | |
1688 | 2) A direct query of currthread | |
0df8b418 | 1689 | 3) Successful execution of set thread */ |
74531fed PA |
1690 | |
1691 | static void | |
47f8a51d | 1692 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1693 | { |
47f8a51d | 1694 | rs->general_thread = currthread; |
74531fed PA |
1695 | } |
1696 | ||
89be2091 DJ |
1697 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1698 | it can simply pass through to the inferior without reporting. */ | |
1699 | ||
1700 | static void | |
2455069d | 1701 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1702 | { |
1703 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1704 | { | |
1705 | char *pass_packet, *p; | |
89be2091 | 1706 | int count = 0, i; |
747dc59d | 1707 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1708 | |
1709 | gdb_assert (numsigs < 256); | |
1710 | for (i = 0; i < numsigs; i++) | |
1711 | { | |
2455069d | 1712 | if (pass_signals[i]) |
89be2091 DJ |
1713 | count++; |
1714 | } | |
1715 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1716 | strcpy (pass_packet, "QPassSignals:"); | |
1717 | p = pass_packet + strlen (pass_packet); | |
1718 | for (i = 0; i < numsigs; i++) | |
1719 | { | |
2455069d | 1720 | if (pass_signals[i]) |
89be2091 DJ |
1721 | { |
1722 | if (i >= 16) | |
1723 | *p++ = tohex (i >> 4); | |
1724 | *p++ = tohex (i & 15); | |
1725 | if (count) | |
1726 | *p++ = ';'; | |
1727 | else | |
1728 | break; | |
1729 | count--; | |
1730 | } | |
1731 | } | |
1732 | *p = 0; | |
747dc59d | 1733 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1734 | { |
89be2091 DJ |
1735 | putpkt (pass_packet); |
1736 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1737 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1738 | if (rs->last_pass_packet) |
1739 | xfree (rs->last_pass_packet); | |
1740 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1741 | } |
1742 | else | |
1743 | xfree (pass_packet); | |
1744 | } | |
1745 | } | |
1746 | ||
9b224c5e PA |
1747 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1748 | signals it should pass through to the inferior when detaching. */ | |
1749 | ||
1750 | static void | |
1751 | remote_program_signals (int numsigs, unsigned char *signals) | |
1752 | { | |
1753 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1754 | { | |
1755 | char *packet, *p; | |
1756 | int count = 0, i; | |
5e4a05c4 | 1757 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1758 | |
1759 | gdb_assert (numsigs < 256); | |
1760 | for (i = 0; i < numsigs; i++) | |
1761 | { | |
1762 | if (signals[i]) | |
1763 | count++; | |
1764 | } | |
1765 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1766 | strcpy (packet, "QProgramSignals:"); | |
1767 | p = packet + strlen (packet); | |
1768 | for (i = 0; i < numsigs; i++) | |
1769 | { | |
1770 | if (signal_pass_state (i)) | |
1771 | { | |
1772 | if (i >= 16) | |
1773 | *p++ = tohex (i >> 4); | |
1774 | *p++ = tohex (i & 15); | |
1775 | if (count) | |
1776 | *p++ = ';'; | |
1777 | else | |
1778 | break; | |
1779 | count--; | |
1780 | } | |
1781 | } | |
1782 | *p = 0; | |
5e4a05c4 TT |
1783 | if (!rs->last_program_signals_packet |
1784 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1785 | { |
9b224c5e PA |
1786 | putpkt (packet); |
1787 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1788 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1789 | xfree (rs->last_program_signals_packet); |
1790 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1791 | } |
1792 | else | |
1793 | xfree (packet); | |
1794 | } | |
1795 | } | |
1796 | ||
79d7f229 PA |
1797 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1798 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1799 | thread. If GEN is set, set the general thread, if not, then set | |
1800 | the step/continue thread. */ | |
c906108c | 1801 | static void |
79d7f229 | 1802 | set_thread (struct ptid ptid, int gen) |
c906108c | 1803 | { |
d01949b6 | 1804 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1805 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1806 | char *buf = rs->buf; |
79d7f229 | 1807 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1808 | |
79d7f229 | 1809 | if (ptid_equal (state, ptid)) |
c906108c SS |
1810 | return; |
1811 | ||
79d7f229 PA |
1812 | *buf++ = 'H'; |
1813 | *buf++ = gen ? 'g' : 'c'; | |
1814 | if (ptid_equal (ptid, magic_null_ptid)) | |
1815 | xsnprintf (buf, endbuf - buf, "0"); | |
1816 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1817 | xsnprintf (buf, endbuf - buf, "0"); | |
1818 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1819 | xsnprintf (buf, endbuf - buf, "-1"); | |
1820 | else | |
82f73884 | 1821 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1822 | putpkt (rs->buf); |
6d820c5c | 1823 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1824 | if (gen) |
47f8a51d | 1825 | rs->general_thread = ptid; |
c906108c | 1826 | else |
47f8a51d | 1827 | rs->continue_thread = ptid; |
c906108c | 1828 | } |
79d7f229 PA |
1829 | |
1830 | static void | |
1831 | set_general_thread (struct ptid ptid) | |
1832 | { | |
1833 | set_thread (ptid, 1); | |
1834 | } | |
1835 | ||
1836 | static void | |
1837 | set_continue_thread (struct ptid ptid) | |
1838 | { | |
1839 | set_thread (ptid, 0); | |
1840 | } | |
1841 | ||
3c9c4b83 PA |
1842 | /* Change the remote current process. Which thread within the process |
1843 | ends up selected isn't important, as long as it is the same process | |
1844 | as what INFERIOR_PTID points to. | |
1845 | ||
1846 | This comes from that fact that there is no explicit notion of | |
1847 | "selected process" in the protocol. The selected process for | |
1848 | general operations is the process the selected general thread | |
1849 | belongs to. */ | |
1850 | ||
1851 | static void | |
1852 | set_general_process (void) | |
1853 | { | |
1854 | struct remote_state *rs = get_remote_state (); | |
1855 | ||
1856 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1857 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1858 | return; |
1859 | ||
1860 | /* We only need to change the remote current thread if it's pointing | |
1861 | at some other process. */ | |
47f8a51d | 1862 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1863 | set_general_thread (inferior_ptid); |
1864 | } | |
1865 | ||
c906108c | 1866 | \f |
79d7f229 PA |
1867 | /* Return nonzero if the thread PTID is still alive on the remote |
1868 | system. */ | |
c906108c SS |
1869 | |
1870 | static int | |
28439f5e | 1871 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1872 | { |
6d820c5c | 1873 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1874 | char *p, *endp; |
c906108c | 1875 | |
c0a2216e PA |
1876 | if (ptid_equal (ptid, magic_null_ptid)) |
1877 | /* The main thread is always alive. */ | |
1878 | return 1; | |
1879 | ||
1880 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1881 | /* The main thread is always alive. This can happen after a | |
1882 | vAttach, if the remote side doesn't support | |
1883 | multi-threading. */ | |
1884 | return 1; | |
1885 | ||
82f73884 PA |
1886 | p = rs->buf; |
1887 | endp = rs->buf + get_remote_packet_size (); | |
1888 | ||
1889 | *p++ = 'T'; | |
1890 | write_ptid (p, endp, ptid); | |
1891 | ||
2e9f7625 | 1892 | putpkt (rs->buf); |
6d820c5c | 1893 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1894 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1895 | } |
1896 | ||
1897 | /* About these extended threadlist and threadinfo packets. They are | |
1898 | variable length packets but, the fields within them are often fixed | |
1899 | length. They are redundent enough to send over UDP as is the | |
1900 | remote protocol in general. There is a matching unit test module | |
1901 | in libstub. */ | |
1902 | ||
23860348 | 1903 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1904 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1905 | changable. */ |
cce74817 JM |
1906 | |
1907 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1908 | Plan to fix this. */ |
cce74817 | 1909 | |
23860348 | 1910 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1911 | |
9d1f7ab2 | 1912 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1913 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1914 | |
1915 | struct gdb_ext_thread_info | |
c5aa993b | 1916 | { |
23860348 | 1917 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1918 | int active; /* Has state interesting to GDB? |
23860348 | 1919 | regs, stack. */ |
2bc416ba | 1920 | char display[256]; /* Brief state display, name, |
cedea757 | 1921 | blocked/suspended. */ |
23860348 | 1922 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1923 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1924 | whatever. */ |
c5aa993b | 1925 | }; |
cce74817 JM |
1926 | |
1927 | /* The volume of remote transfers can be limited by submitting | |
1928 | a mask containing bits specifying the desired information. | |
1929 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1930 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1931 | |
1932 | #define TAG_THREADID 1 | |
1933 | #define TAG_EXISTS 2 | |
1934 | #define TAG_DISPLAY 4 | |
1935 | #define TAG_THREADNAME 8 | |
c5aa993b | 1936 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1937 | |
23860348 | 1938 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1939 | |
b2dd6311 | 1940 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1941 | |
a14ed312 | 1942 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1943 | |
a14ed312 | 1944 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1945 | |
23860348 | 1946 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1947 | |
a14ed312 | 1948 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1949 | |
a14ed312 | 1950 | static char *pack_int (char *buf, int value); |
cce74817 | 1951 | |
a14ed312 | 1952 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1953 | |
a14ed312 | 1954 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1955 | |
23860348 | 1956 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1957 | |
23860348 | 1958 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1959 | |
23860348 | 1960 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1961 | |
23860348 | 1962 | static int threadref_to_int (threadref *ref); |
cce74817 | 1963 | |
23860348 | 1964 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1965 | |
23860348 | 1966 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1967 | |
2bc416ba | 1968 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1969 | threadref *id); |
cce74817 | 1970 | |
a14ed312 | 1971 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1972 | threadref *expectedref, |
a14ed312 KB |
1973 | struct gdb_ext_thread_info |
1974 | *info); | |
cce74817 JM |
1975 | |
1976 | ||
2bc416ba | 1977 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1978 | int fieldset, /*TAG mask */ |
a14ed312 | 1979 | struct gdb_ext_thread_info *info); |
cce74817 | 1980 | |
a14ed312 KB |
1981 | static char *pack_threadlist_request (char *pkt, int startflag, |
1982 | int threadcount, | |
23860348 | 1983 | threadref *nextthread); |
cce74817 | 1984 | |
a14ed312 KB |
1985 | static int parse_threadlist_response (char *pkt, |
1986 | int result_limit, | |
23860348 | 1987 | threadref *original_echo, |
2bc416ba | 1988 | threadref *resultlist, |
23860348 | 1989 | int *doneflag); |
cce74817 | 1990 | |
a14ed312 | 1991 | static int remote_get_threadlist (int startflag, |
23860348 | 1992 | threadref *nextthread, |
a14ed312 KB |
1993 | int result_limit, |
1994 | int *done, | |
2bc416ba | 1995 | int *result_count, |
23860348 | 1996 | threadref *threadlist); |
cce74817 | 1997 | |
23860348 | 1998 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1999 | |
a14ed312 KB |
2000 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2001 | void *context, int looplimit); | |
cce74817 | 2002 | |
23860348 | 2003 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2004 | |
82f73884 PA |
2005 | |
2006 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2007 | buffer we're allowed to write to. Returns | |
2008 | BUF+CHARACTERS_WRITTEN. */ | |
2009 | ||
2010 | static char * | |
2011 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2012 | { | |
2013 | int pid, tid; | |
2014 | struct remote_state *rs = get_remote_state (); | |
2015 | ||
2016 | if (remote_multi_process_p (rs)) | |
2017 | { | |
2018 | pid = ptid_get_pid (ptid); | |
2019 | if (pid < 0) | |
2020 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2021 | else | |
2022 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2023 | } | |
2024 | tid = ptid_get_tid (ptid); | |
2025 | if (tid < 0) | |
2026 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2027 | else | |
2028 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2029 | ||
2030 | return buf; | |
2031 | } | |
2032 | ||
2033 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2034 | passed the last parsed char. Returns null_ptid on error. */ | |
2035 | ||
2036 | static ptid_t | |
2037 | read_ptid (char *buf, char **obuf) | |
2038 | { | |
2039 | char *p = buf; | |
2040 | char *pp; | |
2041 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2042 | |
2043 | if (*p == 'p') | |
2044 | { | |
2045 | /* Multi-process ptid. */ | |
2046 | pp = unpack_varlen_hex (p + 1, &pid); | |
2047 | if (*pp != '.') | |
b37520b6 | 2048 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2049 | |
2050 | p = pp; | |
2051 | pp = unpack_varlen_hex (p + 1, &tid); | |
2052 | if (obuf) | |
2053 | *obuf = pp; | |
2054 | return ptid_build (pid, 0, tid); | |
2055 | } | |
2056 | ||
2057 | /* No multi-process. Just a tid. */ | |
2058 | pp = unpack_varlen_hex (p, &tid); | |
2059 | ||
2060 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2061 | what's in inferior_ptid, unless it's null at this point. If so, |
2062 | then since there's no way to know the pid of the reported | |
2063 | threads, use the magic number. */ | |
2064 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2065 | pid = ptid_get_pid (magic_null_ptid); | |
2066 | else | |
2067 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2068 | |
2069 | if (obuf) | |
2070 | *obuf = pp; | |
2071 | return ptid_build (pid, 0, tid); | |
2072 | } | |
2073 | ||
23860348 | 2074 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2075 | |
2076 | static const char hexchars[] = "0123456789abcdef"; | |
2077 | ||
2078 | static int | |
fba45db2 | 2079 | ishex (int ch, int *val) |
c906108c SS |
2080 | { |
2081 | if ((ch >= 'a') && (ch <= 'f')) | |
2082 | { | |
2083 | *val = ch - 'a' + 10; | |
2084 | return 1; | |
2085 | } | |
2086 | if ((ch >= 'A') && (ch <= 'F')) | |
2087 | { | |
2088 | *val = ch - 'A' + 10; | |
2089 | return 1; | |
2090 | } | |
2091 | if ((ch >= '0') && (ch <= '9')) | |
2092 | { | |
2093 | *val = ch - '0'; | |
2094 | return 1; | |
2095 | } | |
2096 | return 0; | |
2097 | } | |
2098 | ||
2099 | static int | |
fba45db2 | 2100 | stubhex (int ch) |
c906108c SS |
2101 | { |
2102 | if (ch >= 'a' && ch <= 'f') | |
2103 | return ch - 'a' + 10; | |
2104 | if (ch >= '0' && ch <= '9') | |
2105 | return ch - '0'; | |
2106 | if (ch >= 'A' && ch <= 'F') | |
2107 | return ch - 'A' + 10; | |
2108 | return -1; | |
2109 | } | |
2110 | ||
2111 | static int | |
fba45db2 | 2112 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2113 | { |
2114 | int nibble; | |
2115 | int retval = 0; | |
2116 | ||
2117 | while (fieldlength) | |
2118 | { | |
2119 | nibble = stubhex (*buff++); | |
2120 | retval |= nibble; | |
2121 | fieldlength--; | |
2122 | if (fieldlength) | |
2123 | retval = retval << 4; | |
2124 | } | |
2125 | return retval; | |
2126 | } | |
2127 | ||
2128 | char * | |
fba45db2 | 2129 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2130 | ULONGEST *result) |
c906108c SS |
2131 | { |
2132 | int nibble; | |
d49c44d5 | 2133 | ULONGEST retval = 0; |
c906108c SS |
2134 | |
2135 | while (ishex (*buff, &nibble)) | |
2136 | { | |
2137 | buff++; | |
2138 | retval = retval << 4; | |
2139 | retval |= nibble & 0x0f; | |
2140 | } | |
2141 | *result = retval; | |
2142 | return buff; | |
2143 | } | |
2144 | ||
2145 | static char * | |
fba45db2 | 2146 | unpack_nibble (char *buf, int *val) |
c906108c | 2147 | { |
b7589f7d | 2148 | *val = fromhex (*buf++); |
c906108c SS |
2149 | return buf; |
2150 | } | |
2151 | ||
2152 | static char * | |
fba45db2 | 2153 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2154 | { |
2155 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2156 | return buf; | |
2157 | } | |
2158 | ||
2159 | static char * | |
fba45db2 | 2160 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2161 | { |
2162 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2163 | *pkt++ = hexchars[(byte & 0xf)]; | |
2164 | return pkt; | |
2165 | } | |
2166 | ||
2167 | static char * | |
fba45db2 | 2168 | unpack_byte (char *buf, int *value) |
c906108c SS |
2169 | { |
2170 | *value = stub_unpack_int (buf, 2); | |
2171 | return buf + 2; | |
2172 | } | |
2173 | ||
2174 | static char * | |
fba45db2 | 2175 | pack_int (char *buf, int value) |
c906108c SS |
2176 | { |
2177 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2178 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2179 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2180 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2181 | return buf; | |
2182 | } | |
2183 | ||
2184 | static char * | |
fba45db2 | 2185 | unpack_int (char *buf, int *value) |
c906108c SS |
2186 | { |
2187 | *value = stub_unpack_int (buf, 8); | |
2188 | return buf + 8; | |
2189 | } | |
2190 | ||
23860348 | 2191 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2192 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2193 | |
2194 | static char * | |
fba45db2 | 2195 | pack_string (char *pkt, char *string) |
c906108c SS |
2196 | { |
2197 | char ch; | |
2198 | int len; | |
2199 | ||
2200 | len = strlen (string); | |
2201 | if (len > 200) | |
23860348 | 2202 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2203 | pkt = pack_hex_byte (pkt, len); |
2204 | while (len-- > 0) | |
2205 | { | |
2206 | ch = *string++; | |
2207 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2208 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2209 | *pkt++ = ch; |
2210 | } | |
2211 | return pkt; | |
2212 | } | |
2213 | #endif /* 0 (unused) */ | |
2214 | ||
2215 | static char * | |
fba45db2 | 2216 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2217 | { |
2218 | while (length--) | |
2219 | *dest++ = *src++; | |
2220 | *dest = '\0'; | |
2221 | return src; | |
2222 | } | |
2223 | ||
2224 | static char * | |
fba45db2 | 2225 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2226 | { |
2227 | char *limit; | |
2228 | unsigned char *altid; | |
2229 | ||
2230 | altid = (unsigned char *) id; | |
2231 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2232 | while (pkt < limit) | |
2233 | pkt = pack_hex_byte (pkt, *altid++); | |
2234 | return pkt; | |
2235 | } | |
2236 | ||
2237 | ||
2238 | static char * | |
fba45db2 | 2239 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2240 | { |
2241 | char *altref; | |
2242 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2243 | int x, y; | |
2244 | ||
2245 | altref = (char *) id; | |
2246 | ||
2247 | while (inbuf < limit) | |
2248 | { | |
2249 | x = stubhex (*inbuf++); | |
2250 | y = stubhex (*inbuf++); | |
2251 | *altref++ = (x << 4) | y; | |
2252 | } | |
2253 | return inbuf; | |
2254 | } | |
2255 | ||
2256 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2257 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2258 | to use 64bit thread references internally. This is an adapter |
2259 | function. */ | |
2260 | ||
2261 | void | |
fba45db2 | 2262 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2263 | { |
2264 | unsigned char *scan; | |
2265 | ||
2266 | scan = (unsigned char *) id; | |
2267 | { | |
2268 | int i = 4; | |
2269 | while (i--) | |
2270 | *scan++ = 0; | |
2271 | } | |
2272 | *scan++ = (value >> 24) & 0xff; | |
2273 | *scan++ = (value >> 16) & 0xff; | |
2274 | *scan++ = (value >> 8) & 0xff; | |
2275 | *scan++ = (value & 0xff); | |
2276 | } | |
2277 | ||
2278 | static int | |
fba45db2 | 2279 | threadref_to_int (threadref *ref) |
c906108c SS |
2280 | { |
2281 | int i, value = 0; | |
2282 | unsigned char *scan; | |
2283 | ||
cfd77fa1 | 2284 | scan = *ref; |
c906108c SS |
2285 | scan += 4; |
2286 | i = 4; | |
2287 | while (i-- > 0) | |
2288 | value = (value << 8) | ((*scan++) & 0xff); | |
2289 | return value; | |
2290 | } | |
2291 | ||
2292 | static void | |
fba45db2 | 2293 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2294 | { |
2295 | int i; | |
2296 | unsigned char *csrc, *cdest; | |
2297 | ||
2298 | csrc = (unsigned char *) src; | |
2299 | cdest = (unsigned char *) dest; | |
2300 | i = 8; | |
2301 | while (i--) | |
2302 | *cdest++ = *csrc++; | |
2303 | } | |
2304 | ||
2305 | static int | |
fba45db2 | 2306 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2307 | { |
23860348 | 2308 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2309 | #if 0 |
2310 | unsigned char *srcp, *destp; | |
2311 | int i, result; | |
2312 | srcp = (char *) src; | |
2313 | destp = (char *) dest; | |
2314 | ||
2315 | result = 1; | |
2316 | while (i-- > 0) | |
2317 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2318 | return result; | |
2319 | #endif | |
2320 | return 1; | |
2321 | } | |
2322 | ||
2323 | /* | |
c5aa993b JM |
2324 | threadid:1, # always request threadid |
2325 | context_exists:2, | |
2326 | display:4, | |
2327 | unique_name:8, | |
2328 | more_display:16 | |
2329 | */ | |
c906108c SS |
2330 | |
2331 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2332 | ||
2333 | static char * | |
fba45db2 | 2334 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2335 | { |
23860348 MS |
2336 | *pkt++ = 'q'; /* Info Query */ |
2337 | *pkt++ = 'P'; /* process or thread info */ | |
2338 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2339 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2340 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2341 | return pkt; |
2342 | } | |
2343 | ||
23860348 | 2344 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2345 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2346 | add more fields as time goes by. */ |
c906108c | 2347 | |
23860348 | 2348 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2349 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2350 | fetch registers and its stack? */ |
c5aa993b | 2351 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2352 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2353 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2354 | the process. */ |
c906108c SS |
2355 | |
2356 | static int | |
fba45db2 KB |
2357 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2358 | struct gdb_ext_thread_info *info) | |
c906108c | 2359 | { |
d01949b6 | 2360 | struct remote_state *rs = get_remote_state (); |
c906108c | 2361 | int mask, length; |
cfd77fa1 | 2362 | int tag; |
c906108c | 2363 | threadref ref; |
6d820c5c | 2364 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2365 | int retval = 1; |
2366 | ||
23860348 | 2367 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2368 | info->active = 0; |
2369 | info->display[0] = '\0'; | |
2370 | info->shortname[0] = '\0'; | |
2371 | info->more_display[0] = '\0'; | |
2372 | ||
23860348 MS |
2373 | /* Assume the characters indicating the packet type have been |
2374 | stripped. */ | |
c906108c SS |
2375 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2376 | pkt = unpack_threadid (pkt, &ref); | |
2377 | ||
2378 | if (mask == 0) | |
8a3fe4f8 | 2379 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2380 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2381 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2382 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2383 | return 0; |
2384 | } | |
2385 | copy_threadref (&info->threadid, &ref); | |
2386 | ||
23860348 | 2387 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2388 | |
23860348 MS |
2389 | /* Packets are terminated with nulls. */ |
2390 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2391 | { |
2392 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2393 | pkt = unpack_byte (pkt, &length); /* length */ |
2394 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2395 | { |
8a3fe4f8 | 2396 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2397 | retval = 0; |
2398 | break; | |
2399 | } | |
2400 | if (tag == TAG_THREADID) | |
2401 | { | |
2402 | if (length != 16) | |
2403 | { | |
8a3fe4f8 | 2404 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2405 | retval = 0; |
2406 | break; | |
2407 | } | |
2408 | pkt = unpack_threadid (pkt, &ref); | |
2409 | mask = mask & ~TAG_THREADID; | |
2410 | continue; | |
2411 | } | |
2412 | if (tag == TAG_EXISTS) | |
2413 | { | |
2414 | info->active = stub_unpack_int (pkt, length); | |
2415 | pkt += length; | |
2416 | mask = mask & ~(TAG_EXISTS); | |
2417 | if (length > 8) | |
2418 | { | |
8a3fe4f8 | 2419 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2420 | retval = 0; |
2421 | break; | |
2422 | } | |
2423 | continue; | |
2424 | } | |
2425 | if (tag == TAG_THREADNAME) | |
2426 | { | |
2427 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2428 | mask = mask & ~TAG_THREADNAME; | |
2429 | continue; | |
2430 | } | |
2431 | if (tag == TAG_DISPLAY) | |
2432 | { | |
2433 | pkt = unpack_string (pkt, &info->display[0], length); | |
2434 | mask = mask & ~TAG_DISPLAY; | |
2435 | continue; | |
2436 | } | |
2437 | if (tag == TAG_MOREDISPLAY) | |
2438 | { | |
2439 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2440 | mask = mask & ~TAG_MOREDISPLAY; | |
2441 | continue; | |
2442 | } | |
8a3fe4f8 | 2443 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2444 | break; /* Not a tag we know about. */ |
c906108c SS |
2445 | } |
2446 | return retval; | |
2447 | } | |
2448 | ||
2449 | static int | |
fba45db2 KB |
2450 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2451 | struct gdb_ext_thread_info *info) | |
c906108c | 2452 | { |
d01949b6 | 2453 | struct remote_state *rs = get_remote_state (); |
c906108c | 2454 | int result; |
c906108c | 2455 | |
2e9f7625 DJ |
2456 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2457 | putpkt (rs->buf); | |
6d820c5c | 2458 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2459 | |
2460 | if (rs->buf[0] == '\0') | |
2461 | return 0; | |
2462 | ||
2e9f7625 | 2463 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2464 | threadid, info); |
c906108c SS |
2465 | return result; |
2466 | } | |
2467 | ||
c906108c SS |
2468 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2469 | ||
2470 | static char * | |
fba45db2 KB |
2471 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2472 | threadref *nextthread) | |
c906108c SS |
2473 | { |
2474 | *pkt++ = 'q'; /* info query packet */ | |
2475 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2476 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2477 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2478 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2479 | *pkt = '\0'; | |
2480 | return pkt; | |
2481 | } | |
2482 | ||
2483 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2484 | ||
2485 | static int | |
fba45db2 KB |
2486 | parse_threadlist_response (char *pkt, int result_limit, |
2487 | threadref *original_echo, threadref *resultlist, | |
2488 | int *doneflag) | |
c906108c | 2489 | { |
d01949b6 | 2490 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2491 | char *limit; |
2492 | int count, resultcount, done; | |
2493 | ||
2494 | resultcount = 0; | |
2495 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2496 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2497 | /* done parse past here */ |
c906108c SS |
2498 | pkt = unpack_byte (pkt, &count); /* count field */ |
2499 | pkt = unpack_nibble (pkt, &done); | |
2500 | /* The first threadid is the argument threadid. */ | |
2501 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2502 | while ((count-- > 0) && (pkt < limit)) | |
2503 | { | |
2504 | pkt = unpack_threadid (pkt, resultlist++); | |
2505 | if (resultcount++ >= result_limit) | |
2506 | break; | |
2507 | } | |
2508 | if (doneflag) | |
2509 | *doneflag = done; | |
2510 | return resultcount; | |
2511 | } | |
2512 | ||
2513 | static int | |
fba45db2 KB |
2514 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2515 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2516 | { |
d01949b6 | 2517 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2518 | int result = 1; |
2519 | ||
23860348 | 2520 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2521 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2522 | >= get_remote_packet_size ()) | |
ea9c271d | 2523 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2524 | |
6d820c5c DJ |
2525 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2526 | putpkt (rs->buf); | |
2527 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2528 | |
d8f2712d | 2529 | if (*rs->buf == '\0') |
21bce120 | 2530 | return 0; |
d8f2712d VP |
2531 | else |
2532 | *result_count = | |
0d031856 TT |
2533 | parse_threadlist_response (rs->buf + 2, result_limit, |
2534 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2535 | |
0d031856 | 2536 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2537 | { |
23860348 MS |
2538 | /* FIXME: This is a good reason to drop the packet. */ |
2539 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2540 | /* Possabilities : |
2541 | retransmit immediatly - race conditions | |
2542 | retransmit after timeout - yes | |
2543 | exit | |
2544 | wait for packet, then exit | |
2545 | */ | |
8a3fe4f8 | 2546 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2547 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2548 | } |
2549 | if (*result_count <= 0) | |
2550 | { | |
2551 | if (*done != 1) | |
2552 | { | |
8a3fe4f8 | 2553 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2554 | result = 0; |
2555 | } | |
2556 | return result; /* break; */ | |
2557 | } | |
2558 | if (*result_count > result_limit) | |
2559 | { | |
2560 | *result_count = 0; | |
8a3fe4f8 | 2561 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2562 | return 0; |
2563 | } | |
2564 | return result; | |
2565 | } | |
2566 | ||
23860348 MS |
2567 | /* This is the interface between remote and threads, remotes upper |
2568 | interface. */ | |
c906108c SS |
2569 | |
2570 | /* remote_find_new_threads retrieves the thread list and for each | |
2571 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2572 | adding the thread if it does not already exist. This involves |
c906108c SS |
2573 | getting partial thread lists from the remote target so, polling the |
2574 | quit_flag is required. */ | |
2575 | ||
2576 | ||
c906108c | 2577 | static int |
fba45db2 KB |
2578 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2579 | int looplimit) | |
c906108c | 2580 | { |
0d031856 | 2581 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2582 | int done, i, result_count; |
2583 | int startflag = 1; | |
2584 | int result = 1; | |
2585 | int loopcount = 0; | |
c906108c SS |
2586 | |
2587 | done = 0; | |
2588 | while (!done) | |
2589 | { | |
2590 | if (loopcount++ > looplimit) | |
2591 | { | |
2592 | result = 0; | |
8a3fe4f8 | 2593 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2594 | break; |
2595 | } | |
0d031856 TT |
2596 | if (!remote_get_threadlist (startflag, &rs->nextthread, |
2597 | MAXTHREADLISTRESULTS, | |
2598 | &done, &result_count, rs->resultthreadlist)) | |
c906108c SS |
2599 | { |
2600 | result = 0; | |
2601 | break; | |
2602 | } | |
23860348 | 2603 | /* Clear for later iterations. */ |
c906108c SS |
2604 | startflag = 0; |
2605 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2606 | if (result_count >= 1) | |
0d031856 TT |
2607 | copy_threadref (&rs->nextthread, |
2608 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2609 | i = 0; |
2610 | while (result_count--) | |
0d031856 | 2611 | if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context))) |
c906108c SS |
2612 | break; |
2613 | } | |
2614 | return result; | |
2615 | } | |
2616 | ||
2617 | static int | |
fba45db2 | 2618 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2619 | { |
79d7f229 PA |
2620 | int pid = ptid_get_pid (inferior_ptid); |
2621 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2622 | |
2623 | if (!in_thread_list (ptid)) | |
2624 | add_thread (ptid); | |
c906108c SS |
2625 | return 1; /* continue iterator */ |
2626 | } | |
2627 | ||
2628 | #define CRAZY_MAX_THREADS 1000 | |
2629 | ||
39f77062 KB |
2630 | static ptid_t |
2631 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2632 | { |
d01949b6 | 2633 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2634 | |
2635 | putpkt ("qC"); | |
6d820c5c | 2636 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2637 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2638 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2639 | else |
2640 | return oldpid; | |
2641 | } | |
2642 | ||
802188a7 RM |
2643 | /* Find new threads for info threads command. |
2644 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2645 | */ |
cce74817 JM |
2646 | |
2647 | static void | |
fba45db2 | 2648 | remote_find_new_threads (void) |
c906108c | 2649 | { |
c5aa993b JM |
2650 | remote_threadlist_iterator (remote_newthread_step, 0, |
2651 | CRAZY_MAX_THREADS); | |
c906108c SS |
2652 | } |
2653 | ||
dc146f7c VP |
2654 | #if defined(HAVE_LIBEXPAT) |
2655 | ||
2656 | typedef struct thread_item | |
2657 | { | |
2658 | ptid_t ptid; | |
2659 | char *extra; | |
2660 | int core; | |
2661 | } thread_item_t; | |
2662 | DEF_VEC_O(thread_item_t); | |
2663 | ||
2664 | struct threads_parsing_context | |
2665 | { | |
2666 | VEC (thread_item_t) *items; | |
2667 | }; | |
2668 | ||
2669 | static void | |
2670 | start_thread (struct gdb_xml_parser *parser, | |
2671 | const struct gdb_xml_element *element, | |
2672 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2673 | { | |
2674 | struct threads_parsing_context *data = user_data; | |
2675 | ||
2676 | struct thread_item item; | |
2677 | char *id; | |
3d2c1d41 | 2678 | struct gdb_xml_value *attr; |
dc146f7c | 2679 | |
3d2c1d41 | 2680 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2681 | item.ptid = read_ptid (id, NULL); |
2682 | ||
3d2c1d41 PA |
2683 | attr = xml_find_attribute (attributes, "core"); |
2684 | if (attr != NULL) | |
2685 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2686 | else |
2687 | item.core = -1; | |
2688 | ||
2689 | item.extra = 0; | |
2690 | ||
2691 | VEC_safe_push (thread_item_t, data->items, &item); | |
2692 | } | |
2693 | ||
2694 | static void | |
2695 | end_thread (struct gdb_xml_parser *parser, | |
2696 | const struct gdb_xml_element *element, | |
2697 | void *user_data, const char *body_text) | |
2698 | { | |
2699 | struct threads_parsing_context *data = user_data; | |
2700 | ||
2701 | if (body_text && *body_text) | |
2ae2a0b7 | 2702 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2703 | } |
2704 | ||
2705 | const struct gdb_xml_attribute thread_attributes[] = { | |
2706 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2707 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2708 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2709 | }; | |
2710 | ||
2711 | const struct gdb_xml_element thread_children[] = { | |
2712 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2713 | }; | |
2714 | ||
2715 | const struct gdb_xml_element threads_children[] = { | |
2716 | { "thread", thread_attributes, thread_children, | |
2717 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2718 | start_thread, end_thread }, | |
2719 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2720 | }; | |
2721 | ||
2722 | const struct gdb_xml_element threads_elements[] = { | |
2723 | { "threads", NULL, threads_children, | |
2724 | GDB_XML_EF_NONE, NULL, NULL }, | |
2725 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2726 | }; | |
2727 | ||
02357a4a PA |
2728 | /* Discard the contents of the constructed thread info context. */ |
2729 | ||
2730 | static void | |
2731 | clear_threads_parsing_context (void *p) | |
2732 | { | |
2733 | struct threads_parsing_context *context = p; | |
2734 | int i; | |
2735 | struct thread_item *item; | |
2736 | ||
2737 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2738 | xfree (item->extra); | |
2739 | ||
2740 | VEC_free (thread_item_t, context->items); | |
2741 | } | |
2742 | ||
dc146f7c VP |
2743 | #endif |
2744 | ||
9d1f7ab2 MS |
2745 | /* |
2746 | * Find all threads for info threads command. | |
2747 | * Uses new thread protocol contributed by Cisco. | |
2748 | * Falls back and attempts to use the older method (above) | |
2749 | * if the target doesn't respond to the new method. | |
2750 | */ | |
2751 | ||
0f71a2f6 | 2752 | static void |
28439f5e | 2753 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2754 | { |
d01949b6 | 2755 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2756 | char *bufp; |
79d7f229 | 2757 | ptid_t new_thread; |
0f71a2f6 | 2758 | |
5d93a237 | 2759 | if (rs->remote_desc == 0) /* paranoia */ |
8a3fe4f8 | 2760 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2761 | |
dc146f7c VP |
2762 | #if defined(HAVE_LIBEXPAT) |
2763 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2764 | { | |
2765 | char *xml = target_read_stralloc (¤t_target, | |
2766 | TARGET_OBJECT_THREADS, NULL); | |
2767 | ||
2768 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2769 | |
dc146f7c VP |
2770 | if (xml && *xml) |
2771 | { | |
dc146f7c | 2772 | struct threads_parsing_context context; |
dc146f7c | 2773 | |
efc0eabd PA |
2774 | context.items = NULL; |
2775 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2776 | |
efc0eabd PA |
2777 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2778 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2779 | { |
2780 | int i; | |
2781 | struct thread_item *item; | |
2782 | ||
3e43a32a MS |
2783 | for (i = 0; |
2784 | VEC_iterate (thread_item_t, context.items, i, item); | |
2785 | ++i) | |
dc146f7c VP |
2786 | { |
2787 | if (!ptid_equal (item->ptid, null_ptid)) | |
2788 | { | |
2789 | struct private_thread_info *info; | |
2790 | /* In non-stop mode, we assume new found threads | |
2791 | are running until proven otherwise with a | |
2792 | stop reply. In all-stop, we can only get | |
2793 | here if all threads are stopped. */ | |
2794 | int running = non_stop ? 1 : 0; | |
2795 | ||
2796 | remote_notice_new_inferior (item->ptid, running); | |
2797 | ||
2798 | info = demand_private_info (item->ptid); | |
2799 | info->core = item->core; | |
2800 | info->extra = item->extra; | |
02357a4a | 2801 | item->extra = NULL; |
dc146f7c | 2802 | } |
dc146f7c VP |
2803 | } |
2804 | } | |
dc146f7c VP |
2805 | } |
2806 | ||
2807 | do_cleanups (back_to); | |
2808 | return; | |
2809 | } | |
2810 | #endif | |
2811 | ||
b80fafe3 | 2812 | if (rs->use_threadinfo_query) |
9d1f7ab2 MS |
2813 | { |
2814 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2815 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2816 | bufp = rs->buf; |
9d1f7ab2 | 2817 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2818 | { |
44d594fd PA |
2819 | struct cleanup *old_chain; |
2820 | char *saved_reply; | |
2821 | ||
2822 | /* remote_notice_new_inferior (in the loop below) may make | |
2823 | new RSP calls, which clobber rs->buf. Work with a | |
2824 | copy. */ | |
2825 | bufp = saved_reply = xstrdup (rs->buf); | |
2826 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2827 | ||
9d1f7ab2 MS |
2828 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2829 | { | |
2830 | do | |
2831 | { | |
82f73884 | 2832 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2833 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2834 | { |
74531fed | 2835 | /* In non-stop mode, we assume new found threads |
1941c569 | 2836 | are running until proven otherwise with a |
74531fed PA |
2837 | stop reply. In all-stop, we can only get |
2838 | here if all threads are stopped. */ | |
1941c569 PA |
2839 | int running = non_stop ? 1 : 0; |
2840 | ||
2841 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2842 | } |
9d1f7ab2 MS |
2843 | } |
2844 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2845 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2846 | putpkt ("qsThreadInfo"); |
6d820c5c | 2847 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2848 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2849 | } |
44d594fd | 2850 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2851 | return; /* done */ |
2852 | } | |
2853 | } | |
2854 | ||
74531fed PA |
2855 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2856 | if (non_stop) | |
2857 | return; | |
2858 | ||
23860348 | 2859 | /* Else fall back to old method based on jmetzler protocol. */ |
b80fafe3 | 2860 | rs->use_threadinfo_query = 0; |
9d1f7ab2 MS |
2861 | remote_find_new_threads (); |
2862 | return; | |
2863 | } | |
2864 | ||
802188a7 | 2865 | /* |
9d1f7ab2 MS |
2866 | * Collect a descriptive string about the given thread. |
2867 | * The target may say anything it wants to about the thread | |
2868 | * (typically info about its blocked / runnable state, name, etc.). | |
2869 | * This string will appear in the info threads display. | |
802188a7 | 2870 | * |
9d1f7ab2 MS |
2871 | * Optional: targets are not required to implement this function. |
2872 | */ | |
2873 | ||
2874 | static char * | |
2875 | remote_threads_extra_info (struct thread_info *tp) | |
2876 | { | |
d01949b6 | 2877 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2878 | int result; |
2879 | int set; | |
2880 | threadref id; | |
2881 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2882 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2883 | int n = 0; /* position in display_buf */ |
2884 | ||
5d93a237 | 2885 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2886 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2887 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2888 | |
60e569b9 PA |
2889 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2890 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2891 | /* This is the main thread which was added by GDB. The remote | |
2892 | server doesn't know about it. */ | |
2893 | return NULL; | |
2894 | ||
dc146f7c VP |
2895 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2896 | { | |
2897 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2898 | |
dc146f7c VP |
2899 | if (info && info->private) |
2900 | return info->private->extra; | |
2901 | else | |
2902 | return NULL; | |
2903 | } | |
2904 | ||
b80fafe3 | 2905 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2906 | { |
82f73884 PA |
2907 | char *b = rs->buf; |
2908 | char *endb = rs->buf + get_remote_packet_size (); | |
2909 | ||
2910 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2911 | b += strlen (b); | |
2912 | write_ptid (b, endb, tp->ptid); | |
2913 | ||
2e9f7625 | 2914 | putpkt (rs->buf); |
6d820c5c | 2915 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2916 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2917 | { |
2e9f7625 DJ |
2918 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2919 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2920 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2921 | return display_buf; |
2922 | } | |
0f71a2f6 | 2923 | } |
9d1f7ab2 MS |
2924 | |
2925 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2926 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2927 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2928 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2929 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2930 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2931 | if (threadinfo.active) | |
0f71a2f6 | 2932 | { |
9d1f7ab2 | 2933 | if (*threadinfo.shortname) |
2bc416ba | 2934 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2935 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2936 | if (*threadinfo.display) |
2bc416ba | 2937 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2938 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2939 | if (*threadinfo.more_display) |
2bc416ba | 2940 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2941 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2942 | |
2943 | if (n > 0) | |
c5aa993b | 2944 | { |
23860348 | 2945 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2946 | if (',' == display_buf[n-1]) |
2947 | display_buf[n-1] = ' '; | |
2948 | return display_buf; | |
c5aa993b | 2949 | } |
0f71a2f6 | 2950 | } |
9d1f7ab2 | 2951 | return NULL; |
0f71a2f6 | 2952 | } |
c906108c | 2953 | \f |
c5aa993b | 2954 | |
0fb4aa4b PA |
2955 | static int |
2956 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2957 | struct static_tracepoint_marker *marker) | |
2958 | { | |
2959 | struct remote_state *rs = get_remote_state (); | |
2960 | char *p = rs->buf; | |
2961 | ||
bba74b36 | 2962 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2963 | p += strlen (p); |
2964 | p += hexnumstr (p, addr); | |
2965 | putpkt (rs->buf); | |
2966 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2967 | p = rs->buf; | |
2968 | ||
2969 | if (*p == 'E') | |
2970 | error (_("Remote failure reply: %s"), p); | |
2971 | ||
2972 | if (*p++ == 'm') | |
2973 | { | |
2974 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2975 | return 1; | |
2976 | } | |
2977 | ||
2978 | return 0; | |
2979 | } | |
2980 | ||
0fb4aa4b PA |
2981 | static VEC(static_tracepoint_marker_p) * |
2982 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2983 | { | |
2984 | struct remote_state *rs = get_remote_state (); | |
2985 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2986 | struct static_tracepoint_marker *marker = NULL; | |
2987 | struct cleanup *old_chain; | |
2988 | char *p; | |
2989 | ||
2990 | /* Ask for a first packet of static tracepoint marker | |
2991 | definition. */ | |
2992 | putpkt ("qTfSTM"); | |
2993 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2994 | p = rs->buf; | |
2995 | if (*p == 'E') | |
2996 | error (_("Remote failure reply: %s"), p); | |
2997 | ||
2998 | old_chain = make_cleanup (free_current_marker, &marker); | |
2999 | ||
3000 | while (*p++ == 'm') | |
3001 | { | |
3002 | if (marker == NULL) | |
3003 | marker = XCNEW (struct static_tracepoint_marker); | |
3004 | ||
3005 | do | |
3006 | { | |
3007 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3008 | ||
3009 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3010 | { | |
3011 | VEC_safe_push (static_tracepoint_marker_p, | |
3012 | markers, marker); | |
3013 | marker = NULL; | |
3014 | } | |
3015 | else | |
3016 | { | |
3017 | release_static_tracepoint_marker (marker); | |
3018 | memset (marker, 0, sizeof (*marker)); | |
3019 | } | |
3020 | } | |
3021 | while (*p++ == ','); /* comma-separated list */ | |
3022 | /* Ask for another packet of static tracepoint definition. */ | |
3023 | putpkt ("qTsSTM"); | |
3024 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3025 | p = rs->buf; | |
3026 | } | |
3027 | ||
3028 | do_cleanups (old_chain); | |
3029 | return markers; | |
3030 | } | |
3031 | ||
3032 | \f | |
10760264 JB |
3033 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3034 | ||
3035 | static ptid_t | |
3036 | remote_get_ada_task_ptid (long lwp, long thread) | |
3037 | { | |
3038 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
3039 | } | |
3040 | \f | |
3041 | ||
24b06219 | 3042 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3043 | |
3044 | static void | |
fba45db2 | 3045 | extended_remote_restart (void) |
c906108c | 3046 | { |
d01949b6 | 3047 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3048 | |
3049 | /* Send the restart command; for reasons I don't understand the | |
3050 | remote side really expects a number after the "R". */ | |
ea9c271d | 3051 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3052 | putpkt (rs->buf); |
c906108c | 3053 | |
ad9a8f3f | 3054 | remote_fileio_reset (); |
c906108c SS |
3055 | } |
3056 | \f | |
3057 | /* Clean up connection to a remote debugger. */ | |
3058 | ||
c906108c | 3059 | static void |
460014f5 | 3060 | remote_close (void) |
c906108c | 3061 | { |
5d93a237 TT |
3062 | struct remote_state *rs = get_remote_state (); |
3063 | ||
3064 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3065 | return; /* already closed */ |
3066 | ||
3067 | /* Make sure we leave stdin registered in the event loop, and we | |
3068 | don't leave the async SIGINT signal handler installed. */ | |
3069 | remote_terminal_ours (); | |
ce5ce7ed | 3070 | |
5d93a237 TT |
3071 | serial_close (rs->remote_desc); |
3072 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3073 | |
3074 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3075 | of all the inferiors and their threads we were controlling. |
3076 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3077 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3078 | inferior_ptid = null_ptid; |
f67fd822 | 3079 | discard_all_inferiors (); |
ce5ce7ed | 3080 | |
f48ff2a7 YQ |
3081 | /* We are closing the remote target, so we should discard |
3082 | everything of this target. */ | |
bcc75809 | 3083 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3084 | |
3085 | if (remote_async_inferior_event_token) | |
3086 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3087 | |
5965e028 | 3088 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3089 | |
3090 | trace_reset_local_state (); | |
c906108c SS |
3091 | } |
3092 | ||
23860348 | 3093 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3094 | |
3095 | static void | |
fba45db2 | 3096 | get_offsets (void) |
c906108c | 3097 | { |
d01949b6 | 3098 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3099 | char *buf; |
085dd6e6 | 3100 | char *ptr; |
31d99776 DJ |
3101 | int lose, num_segments = 0, do_sections, do_segments; |
3102 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3103 | struct section_offsets *offs; |
31d99776 DJ |
3104 | struct symfile_segment_data *data; |
3105 | ||
3106 | if (symfile_objfile == NULL) | |
3107 | return; | |
c906108c SS |
3108 | |
3109 | putpkt ("qOffsets"); | |
6d820c5c | 3110 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3111 | buf = rs->buf; |
c906108c SS |
3112 | |
3113 | if (buf[0] == '\000') | |
3114 | return; /* Return silently. Stub doesn't support | |
23860348 | 3115 | this command. */ |
c906108c SS |
3116 | if (buf[0] == 'E') |
3117 | { | |
8a3fe4f8 | 3118 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3119 | return; |
3120 | } | |
3121 | ||
3122 | /* Pick up each field in turn. This used to be done with scanf, but | |
3123 | scanf will make trouble if CORE_ADDR size doesn't match | |
3124 | conversion directives correctly. The following code will work | |
3125 | with any size of CORE_ADDR. */ | |
3126 | text_addr = data_addr = bss_addr = 0; | |
3127 | ptr = buf; | |
3128 | lose = 0; | |
3129 | ||
3130 | if (strncmp (ptr, "Text=", 5) == 0) | |
3131 | { | |
3132 | ptr += 5; | |
3133 | /* Don't use strtol, could lose on big values. */ | |
3134 | while (*ptr && *ptr != ';') | |
3135 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3136 | |
31d99776 DJ |
3137 | if (strncmp (ptr, ";Data=", 6) == 0) |
3138 | { | |
3139 | ptr += 6; | |
3140 | while (*ptr && *ptr != ';') | |
3141 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3142 | } | |
3143 | else | |
3144 | lose = 1; | |
3145 | ||
3146 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3147 | { | |
3148 | ptr += 5; | |
3149 | while (*ptr && *ptr != ';') | |
3150 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3151 | |
31d99776 DJ |
3152 | if (bss_addr != data_addr) |
3153 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3154 | } | |
3155 | else | |
3156 | lose = 1; | |
3157 | } | |
3158 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3159 | { |
31d99776 DJ |
3160 | ptr += 8; |
3161 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3162 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3163 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3164 | num_segments = 1; | |
3165 | ||
3166 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3167 | { | |
3168 | ptr += 9; | |
3169 | while (*ptr && *ptr != ';') | |
3170 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3171 | num_segments++; | |
3172 | } | |
c906108c SS |
3173 | } |
3174 | else | |
3175 | lose = 1; | |
3176 | ||
3177 | if (lose) | |
8a3fe4f8 | 3178 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3179 | else if (*ptr != '\0') |
3180 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3181 | |
802188a7 | 3182 | offs = ((struct section_offsets *) |
a39a16c4 | 3183 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3184 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3185 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3186 | |
31d99776 DJ |
3187 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3188 | do_segments = (data != NULL); | |
3189 | do_sections = num_segments == 0; | |
c906108c | 3190 | |
28c32713 | 3191 | if (num_segments > 0) |
31d99776 | 3192 | { |
31d99776 DJ |
3193 | segments[0] = text_addr; |
3194 | segments[1] = data_addr; | |
3195 | } | |
28c32713 JB |
3196 | /* If we have two segments, we can still try to relocate everything |
3197 | by assuming that the .text and .data offsets apply to the whole | |
3198 | text and data segments. Convert the offsets given in the packet | |
3199 | to base addresses for symfile_map_offsets_to_segments. */ | |
3200 | else if (data && data->num_segments == 2) | |
3201 | { | |
3202 | segments[0] = data->segment_bases[0] + text_addr; | |
3203 | segments[1] = data->segment_bases[1] + data_addr; | |
3204 | num_segments = 2; | |
3205 | } | |
8d385431 DJ |
3206 | /* If the object file has only one segment, assume that it is text |
3207 | rather than data; main programs with no writable data are rare, | |
3208 | but programs with no code are useless. Of course the code might | |
3209 | have ended up in the data segment... to detect that we would need | |
3210 | the permissions here. */ | |
3211 | else if (data && data->num_segments == 1) | |
3212 | { | |
3213 | segments[0] = data->segment_bases[0] + text_addr; | |
3214 | num_segments = 1; | |
3215 | } | |
28c32713 JB |
3216 | /* There's no way to relocate by segment. */ |
3217 | else | |
3218 | do_segments = 0; | |
31d99776 DJ |
3219 | |
3220 | if (do_segments) | |
3221 | { | |
3222 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3223 | offs, num_segments, segments); | |
3224 | ||
3225 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3226 | error (_("Can not handle qOffsets TextSeg " |
3227 | "response with this symbol file")); | |
31d99776 DJ |
3228 | |
3229 | if (ret > 0) | |
3230 | do_sections = 0; | |
3231 | } | |
c906108c | 3232 | |
9ef895d6 DJ |
3233 | if (data) |
3234 | free_symfile_segment_data (data); | |
31d99776 DJ |
3235 | |
3236 | if (do_sections) | |
3237 | { | |
3238 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3239 | ||
3e43a32a MS |
3240 | /* This is a temporary kludge to force data and bss to use the |
3241 | same offsets because that's what nlmconv does now. The real | |
3242 | solution requires changes to the stub and remote.c that I | |
3243 | don't have time to do right now. */ | |
31d99776 DJ |
3244 | |
3245 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3246 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3247 | } | |
c906108c SS |
3248 | |
3249 | objfile_relocate (symfile_objfile, offs); | |
3250 | } | |
3251 | ||
74531fed PA |
3252 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3253 | threads we know are stopped already. This is used during the | |
3254 | initial remote connection in non-stop mode --- threads that are | |
3255 | reported as already being stopped are left stopped. */ | |
3256 | ||
3257 | static int | |
3258 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3259 | { | |
3260 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3261 | if (peek_stop_reply (thread->ptid)) | |
3262 | set_stop_requested (thread->ptid, 1); | |
3263 | ||
3264 | return 0; | |
3265 | } | |
3266 | ||
9a7071a8 JB |
3267 | /* Send interrupt_sequence to remote target. */ |
3268 | static void | |
eeae04df | 3269 | send_interrupt_sequence (void) |
9a7071a8 | 3270 | { |
5d93a237 TT |
3271 | struct remote_state *rs = get_remote_state (); |
3272 | ||
9a7071a8 | 3273 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3274 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3275 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3276 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3277 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3278 | { | |
5d93a237 | 3279 | serial_send_break (rs->remote_desc); |
c33e31fd | 3280 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3281 | } |
3282 | else | |
3283 | internal_error (__FILE__, __LINE__, | |
3284 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3285 | interrupt_sequence_mode); | |
3286 | } | |
3287 | ||
3405876a PA |
3288 | |
3289 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3290 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3291 | ||
3292 | static ptid_t | |
3293 | stop_reply_extract_thread (char *stop_reply) | |
3294 | { | |
3295 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3296 | { | |
3297 | char *p; | |
3298 | ||
3299 | /* Txx r:val ; r:val (...) */ | |
3300 | p = &stop_reply[3]; | |
3301 | ||
3302 | /* Look for "register" named "thread". */ | |
3303 | while (*p != '\0') | |
3304 | { | |
3305 | char *p1; | |
3306 | ||
3307 | p1 = strchr (p, ':'); | |
3308 | if (p1 == NULL) | |
3309 | return null_ptid; | |
3310 | ||
3311 | if (strncmp (p, "thread", p1 - p) == 0) | |
3312 | return read_ptid (++p1, &p); | |
3313 | ||
3314 | p1 = strchr (p, ';'); | |
3315 | if (p1 == NULL) | |
3316 | return null_ptid; | |
3317 | p1++; | |
3318 | ||
3319 | p = p1; | |
3320 | } | |
3321 | } | |
3322 | ||
3323 | return null_ptid; | |
3324 | } | |
3325 | ||
b7ea362b PA |
3326 | /* Determine the remote side's current thread. If we have a stop |
3327 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3328 | "thread" register we can extract the current thread from. If not, | |
3329 | ask the remote which is the current thread with qC. The former | |
3330 | method avoids a roundtrip. */ | |
3331 | ||
3332 | static ptid_t | |
3333 | get_current_thread (char *wait_status) | |
3334 | { | |
3335 | ptid_t ptid; | |
3336 | ||
3337 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3338 | the target architecture, which we haven't yet fully determined at | |
3339 | this point. */ | |
3340 | if (wait_status != NULL) | |
3341 | ptid = stop_reply_extract_thread (wait_status); | |
3342 | if (ptid_equal (ptid, null_ptid)) | |
3343 | ptid = remote_current_thread (inferior_ptid); | |
3344 | ||
3345 | return ptid; | |
3346 | } | |
3347 | ||
49c62f2e PA |
3348 | /* Query the remote target for which is the current thread/process, |
3349 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3350 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3351 | to return the current thread. |
3352 | ||
3353 | This function is called after handling the '?' or 'vRun' packets, | |
3354 | whose response is a stop reply from which we can also try | |
3355 | extracting the thread. If the target doesn't support the explicit | |
3356 | qC query, we infer the current thread from that stop reply, passed | |
3357 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3358 | |
3359 | static void | |
3405876a | 3360 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3361 | { |
3362 | struct remote_state *rs = get_remote_state (); | |
3363 | int fake_pid_p = 0; | |
3405876a | 3364 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3365 | |
3366 | inferior_ptid = null_ptid; | |
3367 | ||
b7ea362b PA |
3368 | /* Now, if we have thread information, update inferior_ptid. */ |
3369 | ptid = get_current_thread (wait_status); | |
3405876a | 3370 | |
49c62f2e PA |
3371 | if (!ptid_equal (ptid, null_ptid)) |
3372 | { | |
3373 | if (!remote_multi_process_p (rs)) | |
3374 | fake_pid_p = 1; | |
3375 | ||
3376 | inferior_ptid = ptid; | |
3377 | } | |
3378 | else | |
3379 | { | |
3380 | /* Without this, some commands which require an active target | |
3381 | (such as kill) won't work. This variable serves (at least) | |
3382 | double duty as both the pid of the target process (if it has | |
3383 | such), and as a flag indicating that a target is active. */ | |
3384 | inferior_ptid = magic_null_ptid; | |
3385 | fake_pid_p = 1; | |
3386 | } | |
3387 | ||
3388 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3389 | ||
3390 | /* Add the main thread. */ | |
3391 | add_thread_silent (inferior_ptid); | |
3392 | } | |
3393 | ||
9cbc821d | 3394 | static void |
04bd08de | 3395 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3396 | { |
c8d104ad PA |
3397 | struct remote_state *rs = get_remote_state (); |
3398 | struct packet_config *noack_config; | |
2d717e4f | 3399 | char *wait_status = NULL; |
8621d6a9 | 3400 | |
23860348 | 3401 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3402 | QUIT; |
c906108c | 3403 | |
9a7071a8 JB |
3404 | if (interrupt_on_connect) |
3405 | send_interrupt_sequence (); | |
3406 | ||
57e12211 | 3407 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3408 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3409 | |
1e51243a PA |
3410 | /* Signal other parts that we're going through the initial setup, |
3411 | and so things may not be stable yet. */ | |
3412 | rs->starting_up = 1; | |
3413 | ||
c8d104ad PA |
3414 | /* The first packet we send to the target is the optional "supported |
3415 | packets" request. If the target can answer this, it will tell us | |
3416 | which later probes to skip. */ | |
3417 | remote_query_supported (); | |
3418 | ||
d914c394 SS |
3419 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3420 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3421 | remote_set_permissions (); | |
3422 | ||
c8d104ad PA |
3423 | /* Next, we possibly activate noack mode. |
3424 | ||
3425 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3426 | enable noack mode if the stub reported a wish for it with | |
3427 | qSupported. | |
3428 | ||
3429 | If set to TRUE, then enable noack mode even if the stub didn't | |
3430 | report it in qSupported. If the stub doesn't reply OK, the | |
3431 | session ends with an error. | |
3432 | ||
3433 | If FALSE, then don't activate noack mode, regardless of what the | |
3434 | stub claimed should be the default with qSupported. */ | |
3435 | ||
3436 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3437 | ||
3438 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3439 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3440 | && noack_config->support == PACKET_ENABLE)) | |
3441 | { | |
3442 | putpkt ("QStartNoAckMode"); | |
3443 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3444 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3445 | rs->noack_mode = 1; | |
3446 | } | |
3447 | ||
04bd08de | 3448 | if (extended_p) |
5fe04517 PA |
3449 | { |
3450 | /* Tell the remote that we are using the extended protocol. */ | |
3451 | putpkt ("!"); | |
3452 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3453 | } | |
3454 | ||
9b224c5e PA |
3455 | /* Let the target know which signals it is allowed to pass down to |
3456 | the program. */ | |
3457 | update_signals_program_target (); | |
3458 | ||
d962ef82 DJ |
3459 | /* Next, if the target can specify a description, read it. We do |
3460 | this before anything involving memory or registers. */ | |
3461 | target_find_description (); | |
3462 | ||
6c95b8df PA |
3463 | /* Next, now that we know something about the target, update the |
3464 | address spaces in the program spaces. */ | |
3465 | update_address_spaces (); | |
3466 | ||
50c71eaf PA |
3467 | /* On OSs where the list of libraries is global to all |
3468 | processes, we fetch them early. */ | |
f5656ead | 3469 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3470 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3471 | |
74531fed PA |
3472 | if (non_stop) |
3473 | { | |
3474 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3475 | error (_("Non-stop mode requested, but remote " |
3476 | "does not support non-stop")); | |
74531fed PA |
3477 | |
3478 | putpkt ("QNonStop:1"); | |
3479 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3480 | ||
3481 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3482 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3483 | |
3484 | /* Find about threads and processes the stub is already | |
3485 | controlling. We default to adding them in the running state. | |
3486 | The '?' query below will then tell us about which threads are | |
3487 | stopped. */ | |
04bd08de | 3488 | remote_threads_info (target); |
74531fed PA |
3489 | } |
3490 | else if (rs->non_stop_aware) | |
3491 | { | |
3492 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3493 | Request it explicitly. */ |
74531fed PA |
3494 | putpkt ("QNonStop:0"); |
3495 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3496 | ||
3497 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3498 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3499 | } |
3500 | ||
a0743c90 YQ |
3501 | /* Upload TSVs regardless of whether the target is running or not. The |
3502 | remote stub, such as GDBserver, may have some predefined or builtin | |
3503 | TSVs, even if the target is not running. */ | |
3504 | if (remote_get_trace_status (current_trace_status ()) != -1) | |
3505 | { | |
3506 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3507 | ||
3508 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3509 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3510 | } | |
3511 | ||
2d717e4f DJ |
3512 | /* Check whether the target is running now. */ |
3513 | putpkt ("?"); | |
3514 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3515 | ||
74531fed | 3516 | if (!non_stop) |
2d717e4f | 3517 | { |
e714e1bf UW |
3518 | ptid_t ptid; |
3519 | int fake_pid_p = 0; | |
3520 | struct inferior *inf; | |
3521 | ||
74531fed | 3522 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3523 | { |
04bd08de | 3524 | if (!extended_p) |
74531fed | 3525 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3526 | |
3527 | /* We're connected, but not running. Drop out before we | |
3528 | call start_remote. */ | |
e278ad5b | 3529 | rs->starting_up = 0; |
c35b1492 | 3530 | return; |
2d717e4f DJ |
3531 | } |
3532 | else | |
74531fed | 3533 | { |
74531fed PA |
3534 | /* Save the reply for later. */ |
3535 | wait_status = alloca (strlen (rs->buf) + 1); | |
3536 | strcpy (wait_status, rs->buf); | |
3537 | } | |
3538 | ||
b7ea362b PA |
3539 | /* Fetch thread list. */ |
3540 | target_find_new_threads (); | |
3541 | ||
74531fed PA |
3542 | /* Let the stub know that we want it to return the thread. */ |
3543 | set_continue_thread (minus_one_ptid); | |
3544 | ||
b7ea362b PA |
3545 | if (thread_count () == 0) |
3546 | { | |
3547 | /* Target has no concept of threads at all. GDB treats | |
3548 | non-threaded target as single-threaded; add a main | |
3549 | thread. */ | |
3550 | add_current_inferior_and_thread (wait_status); | |
3551 | } | |
3552 | else | |
3553 | { | |
3554 | /* We have thread information; select the thread the target | |
3555 | says should be current. If we're reconnecting to a | |
3556 | multi-threaded program, this will ideally be the thread | |
3557 | that last reported an event before GDB disconnected. */ | |
3558 | inferior_ptid = get_current_thread (wait_status); | |
3559 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3560 | { | |
3561 | /* Odd... The target was able to list threads, but not | |
3562 | tell us which thread was current (no "thread" | |
3563 | register in T stop reply?). Just pick the first | |
3564 | thread in the thread list then. */ | |
3565 | inferior_ptid = thread_list->ptid; | |
3566 | } | |
3567 | } | |
74531fed | 3568 | |
6e586cc5 YQ |
3569 | /* init_wait_for_inferior should be called before get_offsets in order |
3570 | to manage `inserted' flag in bp loc in a correct state. | |
3571 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3572 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3573 | start_remote, set `inserted' flag to 1. In the initialization of | |
3574 | inferior, breakpoint_init_inferior should be called first, and then | |
3575 | breakpoint_re_set can be called. If this order is broken, state of | |
3576 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3577 | manipulation. */ | |
3578 | init_wait_for_inferior (); | |
3579 | ||
74531fed PA |
3580 | get_offsets (); /* Get text, data & bss offsets. */ |
3581 | ||
d962ef82 DJ |
3582 | /* If we could not find a description using qXfer, and we know |
3583 | how to do it some other way, try again. This is not | |
3584 | supported for non-stop; it could be, but it is tricky if | |
3585 | there are no stopped threads when we connect. */ | |
04bd08de | 3586 | if (remote_read_description_p (target) |
f5656ead | 3587 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3588 | { |
3589 | target_clear_description (); | |
3590 | target_find_description (); | |
3591 | } | |
3592 | ||
74531fed PA |
3593 | /* Use the previously fetched status. */ |
3594 | gdb_assert (wait_status != NULL); | |
3595 | strcpy (rs->buf, wait_status); | |
3596 | rs->cached_wait_status = 1; | |
3597 | ||
3598 | immediate_quit--; | |
04bd08de | 3599 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3600 | } |
3601 | else | |
3602 | { | |
68c97600 PA |
3603 | /* Clear WFI global state. Do this before finding about new |
3604 | threads and inferiors, and setting the current inferior. | |
3605 | Otherwise we would clear the proceed status of the current | |
3606 | inferior when we want its stop_soon state to be preserved | |
3607 | (see notice_new_inferior). */ | |
3608 | init_wait_for_inferior (); | |
3609 | ||
74531fed PA |
3610 | /* In non-stop, we will either get an "OK", meaning that there |
3611 | are no stopped threads at this time; or, a regular stop | |
3612 | reply. In the latter case, there may be more than one thread | |
3613 | stopped --- we pull them all out using the vStopped | |
3614 | mechanism. */ | |
3615 | if (strcmp (rs->buf, "OK") != 0) | |
3616 | { | |
722247f1 | 3617 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3618 | |
722247f1 YQ |
3619 | /* remote_notif_get_pending_replies acks this one, and gets |
3620 | the rest out. */ | |
f48ff2a7 | 3621 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3622 | = remote_notif_parse (notif, rs->buf); |
3623 | remote_notif_get_pending_events (notif); | |
c906108c | 3624 | |
74531fed PA |
3625 | /* Make sure that threads that were stopped remain |
3626 | stopped. */ | |
3627 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3628 | } | |
2d717e4f | 3629 | |
74531fed PA |
3630 | if (target_can_async_p ()) |
3631 | target_async (inferior_event_handler, 0); | |
c906108c | 3632 | |
74531fed PA |
3633 | if (thread_count () == 0) |
3634 | { | |
04bd08de | 3635 | if (!extended_p) |
74531fed | 3636 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3637 | |
c35b1492 PA |
3638 | /* We're connected, but not running. Drop out before we |
3639 | call start_remote. */ | |
e278ad5b | 3640 | rs->starting_up = 0; |
c35b1492 PA |
3641 | return; |
3642 | } | |
74531fed PA |
3643 | |
3644 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3645 | |
74531fed PA |
3646 | /* Force the stub to choose a thread. */ |
3647 | set_general_thread (null_ptid); | |
c906108c | 3648 | |
74531fed PA |
3649 | /* Query it. */ |
3650 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3651 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3652 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3653 | |
74531fed PA |
3654 | get_offsets (); /* Get text, data & bss offsets. */ |
3655 | ||
3656 | /* In non-stop mode, any cached wait status will be stored in | |
3657 | the stop reply queue. */ | |
3658 | gdb_assert (wait_status == NULL); | |
f0223081 | 3659 | |
2455069d UW |
3660 | /* Report all signals during attach/startup. */ |
3661 | remote_pass_signals (0, NULL); | |
74531fed | 3662 | } |
c8d104ad | 3663 | |
c8d104ad PA |
3664 | /* If we connected to a live target, do some additional setup. */ |
3665 | if (target_has_execution) | |
3666 | { | |
f4ccffad | 3667 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3668 | remote_check_symbols (); |
c8d104ad | 3669 | } |
50c71eaf | 3670 | |
d5551862 SS |
3671 | /* Possibly the target has been engaged in a trace run started |
3672 | previously; find out where things are at. */ | |
26afc0d7 | 3673 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3674 | { |
00bf0b85 | 3675 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3676 | |
00bf0b85 SS |
3677 | if (current_trace_status ()->running) |
3678 | printf_filtered (_("Trace is already running on the target.\n")); | |
3679 | ||
00bf0b85 SS |
3680 | remote_upload_tracepoints (&uploaded_tps); |
3681 | ||
3682 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3683 | } |
3684 | ||
1e51243a PA |
3685 | /* The thread and inferior lists are now synchronized with the |
3686 | target, our symbols have been relocated, and we're merged the | |
3687 | target's tracepoints with ours. We're done with basic start | |
3688 | up. */ | |
3689 | rs->starting_up = 0; | |
3690 | ||
2567c7d9 | 3691 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3692 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3693 | && breakpoints_always_inserted_mode ()) |
3694 | insert_breakpoints (); | |
c906108c SS |
3695 | } |
3696 | ||
3697 | /* Open a connection to a remote debugger. | |
3698 | NAME is the filename used for communication. */ | |
3699 | ||
3700 | static void | |
fba45db2 | 3701 | remote_open (char *name, int from_tty) |
c906108c | 3702 | { |
75c99385 | 3703 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3704 | } |
3705 | ||
c906108c SS |
3706 | /* Open a connection to a remote debugger using the extended |
3707 | remote gdb protocol. NAME is the filename used for communication. */ | |
3708 | ||
3709 | static void | |
fba45db2 | 3710 | extended_remote_open (char *name, int from_tty) |
c906108c | 3711 | { |
75c99385 | 3712 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3713 | } |
3714 | ||
c906108c SS |
3715 | /* Generic code for opening a connection to a remote target. */ |
3716 | ||
d471ea57 AC |
3717 | static void |
3718 | init_all_packet_configs (void) | |
3719 | { | |
3720 | int i; | |
a744cf53 | 3721 | |
444abaca DJ |
3722 | for (i = 0; i < PACKET_MAX; i++) |
3723 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3724 | } |
3725 | ||
23860348 | 3726 | /* Symbol look-up. */ |
dc8acb97 MS |
3727 | |
3728 | static void | |
36d25514 | 3729 | remote_check_symbols (void) |
dc8acb97 | 3730 | { |
d01949b6 | 3731 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3732 | char *msg, *reply, *tmp; |
3733 | struct minimal_symbol *sym; | |
3734 | int end; | |
3735 | ||
63154eca PA |
3736 | /* The remote side has no concept of inferiors that aren't running |
3737 | yet, it only knows about running processes. If we're connected | |
3738 | but our current inferior is not running, we should not invite the | |
3739 | remote target to request symbol lookups related to its | |
3740 | (unrelated) current process. */ | |
3741 | if (!target_has_execution) | |
3742 | return; | |
3743 | ||
444abaca | 3744 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3745 | return; |
3746 | ||
63154eca PA |
3747 | /* Make sure the remote is pointing at the right process. Note |
3748 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3749 | set_general_process (); |
3750 | ||
6d820c5c DJ |
3751 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3752 | because we need both at the same time. */ | |
ea9c271d | 3753 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3754 | |
23860348 | 3755 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3756 | |
3757 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3758 | getpkt (&rs->buf, &rs->buf_size, 0); |
3759 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3760 | reply = rs->buf; |
dc8acb97 MS |
3761 | |
3762 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3763 | { | |
3764 | tmp = &reply[8]; | |
cfd77fa1 | 3765 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3766 | msg[end] = '\0'; |
3767 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3768 | if (sym == NULL) | |
ea9c271d | 3769 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3770 | else |
2bbe3cc1 | 3771 | { |
f5656ead | 3772 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
2bbe3cc1 DJ |
3773 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3774 | ||
3775 | /* If this is a function address, return the start of code | |
3776 | instead of any data function descriptor. */ | |
f5656ead | 3777 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3778 | sym_addr, |
3779 | ¤t_target); | |
3780 | ||
3781 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3782 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3783 | } |
3784 | ||
dc8acb97 | 3785 | putpkt (msg); |
6d820c5c | 3786 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3787 | reply = rs->buf; |
dc8acb97 MS |
3788 | } |
3789 | } | |
3790 | ||
9db8d71f DJ |
3791 | static struct serial * |
3792 | remote_serial_open (char *name) | |
3793 | { | |
3794 | static int udp_warning = 0; | |
3795 | ||
3796 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3797 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3798 | serial connection is reliable and not the serial connection promising | |
3799 | to be. */ | |
3800 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3801 | { | |
3e43a32a MS |
3802 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3803 | "Some events may be lost, rendering further debugging " | |
3804 | "impossible.")); | |
9db8d71f DJ |
3805 | udp_warning = 1; |
3806 | } | |
3807 | ||
3808 | return serial_open (name); | |
3809 | } | |
3810 | ||
d914c394 SS |
3811 | /* Inform the target of our permission settings. The permission flags |
3812 | work without this, but if the target knows the settings, it can do | |
3813 | a couple things. First, it can add its own check, to catch cases | |
3814 | that somehow manage to get by the permissions checks in target | |
3815 | methods. Second, if the target is wired to disallow particular | |
3816 | settings (for instance, a system in the field that is not set up to | |
3817 | be able to stop at a breakpoint), it can object to any unavailable | |
3818 | permissions. */ | |
3819 | ||
3820 | void | |
3821 | remote_set_permissions (void) | |
3822 | { | |
3823 | struct remote_state *rs = get_remote_state (); | |
3824 | ||
bba74b36 YQ |
3825 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3826 | "WriteReg:%x;WriteMem:%x;" | |
3827 | "InsertBreak:%x;InsertTrace:%x;" | |
3828 | "InsertFastTrace:%x;Stop:%x", | |
3829 | may_write_registers, may_write_memory, | |
3830 | may_insert_breakpoints, may_insert_tracepoints, | |
3831 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3832 | putpkt (rs->buf); |
3833 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3834 | ||
3835 | /* If the target didn't like the packet, warn the user. Do not try | |
3836 | to undo the user's settings, that would just be maddening. */ | |
3837 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3838 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3839 | } |
3840 | ||
be2a5f71 DJ |
3841 | /* This type describes each known response to the qSupported |
3842 | packet. */ | |
3843 | struct protocol_feature | |
3844 | { | |
3845 | /* The name of this protocol feature. */ | |
3846 | const char *name; | |
3847 | ||
3848 | /* The default for this protocol feature. */ | |
3849 | enum packet_support default_support; | |
3850 | ||
3851 | /* The function to call when this feature is reported, or after | |
3852 | qSupported processing if the feature is not supported. | |
3853 | The first argument points to this structure. The second | |
3854 | argument indicates whether the packet requested support be | |
3855 | enabled, disabled, or probed (or the default, if this function | |
3856 | is being called at the end of processing and this feature was | |
3857 | not reported). The third argument may be NULL; if not NULL, it | |
3858 | is a NUL-terminated string taken from the packet following | |
3859 | this feature's name and an equals sign. */ | |
3860 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3861 | const char *); | |
3862 | ||
3863 | /* The corresponding packet for this feature. Only used if | |
3864 | FUNC is remote_supported_packet. */ | |
3865 | int packet; | |
3866 | }; | |
3867 | ||
be2a5f71 DJ |
3868 | static void |
3869 | remote_supported_packet (const struct protocol_feature *feature, | |
3870 | enum packet_support support, | |
3871 | const char *argument) | |
3872 | { | |
3873 | if (argument) | |
3874 | { | |
3875 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3876 | " \"%s\"."), feature->name); | |
3877 | return; | |
3878 | } | |
3879 | ||
3880 | if (remote_protocol_packets[feature->packet].support | |
3881 | == PACKET_SUPPORT_UNKNOWN) | |
3882 | remote_protocol_packets[feature->packet].support = support; | |
3883 | } | |
be2a5f71 DJ |
3884 | |
3885 | static void | |
3886 | remote_packet_size (const struct protocol_feature *feature, | |
3887 | enum packet_support support, const char *value) | |
3888 | { | |
3889 | struct remote_state *rs = get_remote_state (); | |
3890 | ||
3891 | int packet_size; | |
3892 | char *value_end; | |
3893 | ||
3894 | if (support != PACKET_ENABLE) | |
3895 | return; | |
3896 | ||
3897 | if (value == NULL || *value == '\0') | |
3898 | { | |
3899 | warning (_("Remote target reported \"%s\" without a size."), | |
3900 | feature->name); | |
3901 | return; | |
3902 | } | |
3903 | ||
3904 | errno = 0; | |
3905 | packet_size = strtol (value, &value_end, 16); | |
3906 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3907 | { | |
3908 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3909 | feature->name, value); | |
3910 | return; | |
3911 | } | |
3912 | ||
3913 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3914 | { | |
3915 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3916 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3917 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3918 | } | |
3919 | ||
3920 | /* Record the new maximum packet size. */ | |
3921 | rs->explicit_packet_size = packet_size; | |
3922 | } | |
3923 | ||
82f73884 PA |
3924 | static void |
3925 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3926 | enum packet_support support, const char *value) | |
3927 | { | |
3928 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3929 | |
82f73884 PA |
3930 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3931 | } | |
3932 | ||
74531fed PA |
3933 | static void |
3934 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3935 | enum packet_support support, const char *value) | |
3936 | { | |
3937 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3938 | |
74531fed PA |
3939 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3940 | } | |
3941 | ||
782b2b07 SS |
3942 | static void |
3943 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3944 | enum packet_support support, | |
3945 | const char *value) | |
3946 | { | |
3947 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3948 | |
782b2b07 SS |
3949 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3950 | } | |
3951 | ||
3788aec7 LM |
3952 | static void |
3953 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3954 | enum packet_support support, | |
3955 | const char *value) | |
3956 | { | |
3957 | struct remote_state *rs = get_remote_state (); | |
3958 | ||
3959 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3960 | } | |
3961 | ||
d3ce09f5 SS |
3962 | static void |
3963 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3964 | enum packet_support support, | |
3965 | const char *value) | |
3966 | { | |
3967 | struct remote_state *rs = get_remote_state (); | |
3968 | ||
3969 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3970 | } | |
3971 | ||
7a697b8d SS |
3972 | static void |
3973 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3974 | enum packet_support support, | |
3975 | const char *value) | |
3976 | { | |
3977 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3978 | |
7a697b8d SS |
3979 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3980 | } | |
3981 | ||
0fb4aa4b PA |
3982 | static void |
3983 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3984 | enum packet_support support, | |
3985 | const char *value) | |
3986 | { | |
3987 | struct remote_state *rs = get_remote_state (); | |
3988 | ||
3989 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3990 | } | |
3991 | ||
1e4d1764 YQ |
3992 | static void |
3993 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3994 | enum packet_support support, | |
3995 | const char *value) | |
3996 | { | |
3997 | struct remote_state *rs = get_remote_state (); | |
3998 | ||
3999 | rs->install_in_trace = (support == PACKET_ENABLE); | |
4000 | } | |
4001 | ||
d5551862 SS |
4002 | static void |
4003 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
4004 | enum packet_support support, | |
4005 | const char *value) | |
4006 | { | |
4007 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 4008 | |
d5551862 SS |
4009 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
4010 | } | |
4011 | ||
d248b706 KY |
4012 | static void |
4013 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
4014 | enum packet_support support, | |
4015 | const char *value) | |
4016 | { | |
4017 | struct remote_state *rs = get_remote_state (); | |
4018 | ||
4019 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
4020 | } | |
4021 | ||
3065dfb6 SS |
4022 | static void |
4023 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
4024 | enum packet_support support, | |
4025 | const char *value) | |
4026 | { | |
4027 | struct remote_state *rs = get_remote_state (); | |
4028 | ||
4029 | rs->string_tracing = (support == PACKET_ENABLE); | |
4030 | } | |
4031 | ||
ced63ec0 GB |
4032 | static void |
4033 | remote_augmented_libraries_svr4_read_feature | |
4034 | (const struct protocol_feature *feature, | |
4035 | enum packet_support support, const char *value) | |
4036 | { | |
4037 | struct remote_state *rs = get_remote_state (); | |
4038 | ||
4039 | rs->augmented_libraries_svr4_read = (support == PACKET_ENABLE); | |
4040 | } | |
4041 | ||
dc473cfb | 4042 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4043 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4044 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4045 | PACKET_qXfer_auxv }, |
23181151 DJ |
4046 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4047 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4048 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4049 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4050 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4051 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 GB |
4052 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4053 | remote_augmented_libraries_svr4_read_feature, -1 }, | |
fd79ecee | 4054 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4055 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4056 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4057 | PACKET_qXfer_spu_read }, | |
4058 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4059 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4060 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4061 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4062 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4063 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4064 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4065 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4066 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4067 | PACKET_QPassSignals }, | |
9b224c5e PA |
4068 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4069 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4070 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4071 | PACKET_QStartNoAckMode }, | |
82f73884 | 4072 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 4073 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
4074 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4075 | PACKET_qXfer_siginfo_read }, | |
4076 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4077 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
4078 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
4079 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
4080 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
4081 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
4082 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
4083 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
4084 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
4085 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
4086 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
4087 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
4088 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
4089 | PACKET_InstallInTrace}, | |
d5551862 SS |
4090 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
4091 | -1 }, | |
40ab02ce MS |
4092 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4093 | PACKET_bc }, | |
4094 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4095 | PACKET_bs }, | |
409873ef SS |
4096 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4097 | PACKET_TracepointSource }, | |
d914c394 SS |
4098 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4099 | PACKET_QAllow }, | |
d248b706 KY |
4100 | { "EnableDisableTracepoints", PACKET_DISABLE, |
4101 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
4102 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4103 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4104 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4105 | PACKET_qXfer_uib }, | |
03583c20 UW |
4106 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4107 | PACKET_QDisableRandomization }, | |
d1feda86 | 4108 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4109 | { "QTBuffer:size", PACKET_DISABLE, |
4110 | remote_supported_packet, PACKET_QTBuffer_size}, | |
3065dfb6 SS |
4111 | { "tracenz", PACKET_DISABLE, |
4112 | remote_string_tracing_feature, -1 }, | |
9accd112 MM |
4113 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4114 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
4115 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
4116 | PACKET_qXfer_btrace } | |
be2a5f71 DJ |
4117 | }; |
4118 | ||
c8d5aac9 L |
4119 | static char *remote_support_xml; |
4120 | ||
4121 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4122 | ||
4123 | void | |
6e39997a | 4124 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4125 | { |
4126 | #if defined(HAVE_LIBEXPAT) | |
4127 | if (remote_support_xml == NULL) | |
c4f7c687 | 4128 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4129 | else |
4130 | { | |
4131 | char *copy = xstrdup (remote_support_xml + 13); | |
4132 | char *p = strtok (copy, ","); | |
4133 | ||
4134 | do | |
4135 | { | |
4136 | if (strcmp (p, xml) == 0) | |
4137 | { | |
4138 | /* already there */ | |
4139 | xfree (copy); | |
4140 | return; | |
4141 | } | |
4142 | } | |
4143 | while ((p = strtok (NULL, ",")) != NULL); | |
4144 | xfree (copy); | |
4145 | ||
94b0dee1 PA |
4146 | remote_support_xml = reconcat (remote_support_xml, |
4147 | remote_support_xml, ",", xml, | |
4148 | (char *) NULL); | |
c8d5aac9 L |
4149 | } |
4150 | #endif | |
4151 | } | |
4152 | ||
4153 | static char * | |
4154 | remote_query_supported_append (char *msg, const char *append) | |
4155 | { | |
4156 | if (msg) | |
94b0dee1 | 4157 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4158 | else |
4159 | return xstrdup (append); | |
4160 | } | |
4161 | ||
be2a5f71 DJ |
4162 | static void |
4163 | remote_query_supported (void) | |
4164 | { | |
4165 | struct remote_state *rs = get_remote_state (); | |
4166 | char *next; | |
4167 | int i; | |
4168 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4169 | ||
4170 | /* The packet support flags are handled differently for this packet | |
4171 | than for most others. We treat an error, a disabled packet, and | |
4172 | an empty response identically: any features which must be reported | |
4173 | to be used will be automatically disabled. An empty buffer | |
4174 | accomplishes this, since that is also the representation for a list | |
4175 | containing no features. */ | |
4176 | ||
4177 | rs->buf[0] = 0; | |
4178 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4179 | { | |
c8d5aac9 | 4180 | char *q = NULL; |
94b0dee1 | 4181 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4182 | |
901f9912 | 4183 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4184 | |
4185 | if (remote_support_xml) | |
4186 | q = remote_query_supported_append (q, remote_support_xml); | |
4187 | ||
dde08ee1 PA |
4188 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4189 | ||
4190 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4191 | putpkt (q); | |
82f73884 | 4192 | |
94b0dee1 PA |
4193 | do_cleanups (old_chain); |
4194 | ||
be2a5f71 DJ |
4195 | getpkt (&rs->buf, &rs->buf_size, 0); |
4196 | ||
4197 | /* If an error occured, warn, but do not return - just reset the | |
4198 | buffer to empty and go on to disable features. */ | |
4199 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4200 | == PACKET_ERROR) | |
4201 | { | |
4202 | warning (_("Remote failure reply: %s"), rs->buf); | |
4203 | rs->buf[0] = 0; | |
4204 | } | |
4205 | } | |
4206 | ||
4207 | memset (seen, 0, sizeof (seen)); | |
4208 | ||
4209 | next = rs->buf; | |
4210 | while (*next) | |
4211 | { | |
4212 | enum packet_support is_supported; | |
4213 | char *p, *end, *name_end, *value; | |
4214 | ||
4215 | /* First separate out this item from the rest of the packet. If | |
4216 | there's another item after this, we overwrite the separator | |
4217 | (terminated strings are much easier to work with). */ | |
4218 | p = next; | |
4219 | end = strchr (p, ';'); | |
4220 | if (end == NULL) | |
4221 | { | |
4222 | end = p + strlen (p); | |
4223 | next = end; | |
4224 | } | |
4225 | else | |
4226 | { | |
89be2091 DJ |
4227 | *end = '\0'; |
4228 | next = end + 1; | |
4229 | ||
be2a5f71 DJ |
4230 | if (end == p) |
4231 | { | |
4232 | warning (_("empty item in \"qSupported\" response")); | |
4233 | continue; | |
4234 | } | |
be2a5f71 DJ |
4235 | } |
4236 | ||
4237 | name_end = strchr (p, '='); | |
4238 | if (name_end) | |
4239 | { | |
4240 | /* This is a name=value entry. */ | |
4241 | is_supported = PACKET_ENABLE; | |
4242 | value = name_end + 1; | |
4243 | *name_end = '\0'; | |
4244 | } | |
4245 | else | |
4246 | { | |
4247 | value = NULL; | |
4248 | switch (end[-1]) | |
4249 | { | |
4250 | case '+': | |
4251 | is_supported = PACKET_ENABLE; | |
4252 | break; | |
4253 | ||
4254 | case '-': | |
4255 | is_supported = PACKET_DISABLE; | |
4256 | break; | |
4257 | ||
4258 | case '?': | |
4259 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4260 | break; | |
4261 | ||
4262 | default: | |
3e43a32a MS |
4263 | warning (_("unrecognized item \"%s\" " |
4264 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4265 | continue; |
4266 | } | |
4267 | end[-1] = '\0'; | |
4268 | } | |
4269 | ||
4270 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4271 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4272 | { | |
4273 | const struct protocol_feature *feature; | |
4274 | ||
4275 | seen[i] = 1; | |
4276 | feature = &remote_protocol_features[i]; | |
4277 | feature->func (feature, is_supported, value); | |
4278 | break; | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | /* If we increased the packet size, make sure to increase the global | |
4283 | buffer size also. We delay this until after parsing the entire | |
4284 | qSupported packet, because this is the same buffer we were | |
4285 | parsing. */ | |
4286 | if (rs->buf_size < rs->explicit_packet_size) | |
4287 | { | |
4288 | rs->buf_size = rs->explicit_packet_size; | |
4289 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4290 | } | |
4291 | ||
4292 | /* Handle the defaults for unmentioned features. */ | |
4293 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4294 | if (!seen[i]) | |
4295 | { | |
4296 | const struct protocol_feature *feature; | |
4297 | ||
4298 | feature = &remote_protocol_features[i]; | |
4299 | feature->func (feature, feature->default_support, NULL); | |
4300 | } | |
4301 | } | |
4302 | ||
78a095c3 JK |
4303 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4304 | on it so remove them first. */ | |
4305 | ||
4306 | static void | |
4307 | remote_unpush_target (void) | |
4308 | { | |
4309 | pop_all_targets_above (process_stratum - 1); | |
4310 | } | |
be2a5f71 | 4311 | |
c906108c | 4312 | static void |
3e43a32a MS |
4313 | remote_open_1 (char *name, int from_tty, |
4314 | struct target_ops *target, int extended_p) | |
c906108c | 4315 | { |
d01949b6 | 4316 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4317 | |
c906108c | 4318 | if (name == 0) |
8a3fe4f8 | 4319 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4320 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4321 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4322 | |
23860348 | 4323 | /* See FIXME above. */ |
c6ebd6cf | 4324 | if (!target_async_permitted) |
92d1e331 | 4325 | wait_forever_enabled_p = 1; |
6426a772 | 4326 | |
2d717e4f | 4327 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4328 | Ask this question first, before target_preopen has a chance to kill |
4329 | anything. */ | |
5d93a237 | 4330 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4331 | { |
78a095c3 JK |
4332 | if (from_tty |
4333 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4334 | error (_("Still connected.")); |
4335 | } | |
4336 | ||
78a095c3 | 4337 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4338 | target_preopen (from_tty); |
4339 | ||
89be2091 | 4340 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4341 | xfree (rs->last_pass_packet); |
4342 | rs->last_pass_packet = NULL; | |
89be2091 | 4343 | |
9b224c5e PA |
4344 | /* Make sure we send the program signals list the next time we |
4345 | resume. */ | |
5e4a05c4 TT |
4346 | xfree (rs->last_program_signals_packet); |
4347 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4348 | |
ad9a8f3f | 4349 | remote_fileio_reset (); |
1dd41f16 NS |
4350 | reopen_exec_file (); |
4351 | reread_symbols (); | |
4352 | ||
5d93a237 TT |
4353 | rs->remote_desc = remote_serial_open (name); |
4354 | if (!rs->remote_desc) | |
c906108c SS |
4355 | perror_with_name (name); |
4356 | ||
4357 | if (baud_rate != -1) | |
4358 | { | |
5d93a237 | 4359 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4360 | { |
9b74d5d3 KB |
4361 | /* The requested speed could not be set. Error out to |
4362 | top level after closing remote_desc. Take care to | |
4363 | set remote_desc to NULL to avoid closing remote_desc | |
4364 | more than once. */ | |
5d93a237 TT |
4365 | serial_close (rs->remote_desc); |
4366 | rs->remote_desc = NULL; | |
c906108c SS |
4367 | perror_with_name (name); |
4368 | } | |
4369 | } | |
4370 | ||
5d93a237 | 4371 | serial_raw (rs->remote_desc); |
c906108c SS |
4372 | |
4373 | /* If there is something sitting in the buffer we might take it as a | |
4374 | response to a command, which would be bad. */ | |
5d93a237 | 4375 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4376 | |
4377 | if (from_tty) | |
4378 | { | |
4379 | puts_filtered ("Remote debugging using "); | |
4380 | puts_filtered (name); | |
4381 | puts_filtered ("\n"); | |
4382 | } | |
23860348 | 4383 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4384 | |
74531fed PA |
4385 | /* Register extra event sources in the event loop. */ |
4386 | remote_async_inferior_event_token | |
4387 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4388 | NULL); | |
5965e028 | 4389 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4390 | |
be2a5f71 DJ |
4391 | /* Reset the target state; these things will be queried either by |
4392 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4393 | init_all_packet_configs (); |
74531fed | 4394 | rs->cached_wait_status = 0; |
be2a5f71 | 4395 | rs->explicit_packet_size = 0; |
a6f3e723 | 4396 | rs->noack_mode = 0; |
82f73884 PA |
4397 | rs->multi_process_aware = 0; |
4398 | rs->extended = extended_p; | |
74531fed | 4399 | rs->non_stop_aware = 0; |
e24a49d8 | 4400 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4401 | rs->ctrlc_pending_p = 0; |
802188a7 | 4402 | |
47f8a51d TT |
4403 | rs->general_thread = not_sent_ptid; |
4404 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4405 | rs->remote_traceframe_number = -1; |
c906108c | 4406 | |
9d1f7ab2 | 4407 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4408 | rs->use_threadinfo_query = 1; |
4409 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4410 | |
c6ebd6cf | 4411 | if (target_async_permitted) |
92d1e331 | 4412 | { |
23860348 | 4413 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4414 | remote_async_terminal_ours_p = 1; |
4415 | ||
4416 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4417 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4418 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4419 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4420 | around this. Eventually a mechanism that allows |
92d1e331 | 4421 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4422 | implemented. */ |
92d1e331 DJ |
4423 | wait_forever_enabled_p = 0; |
4424 | } | |
4425 | ||
23860348 | 4426 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4427 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4428 | |
74531fed PA |
4429 | /* Start afresh. */ |
4430 | init_thread_list (); | |
4431 | ||
36918e70 | 4432 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4433 | target (we'd otherwise be in an inconsistent state) and then |
4434 | propogate the error on up the exception chain. This ensures that | |
4435 | the caller doesn't stumble along blindly assuming that the | |
4436 | function succeeded. The CLI doesn't have this problem but other | |
4437 | UI's, such as MI do. | |
36918e70 AC |
4438 | |
4439 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4440 | this function should return an error indication letting the | |
ce2826aa | 4441 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4442 | ``target remote'' is directly wired to this function making that |
4443 | impossible. On a positive note, the CLI side of this problem has | |
4444 | been fixed - the function set_cmd_context() makes it possible for | |
4445 | all the ``target ....'' commands to share a common callback | |
4446 | function. See cli-dump.c. */ | |
109c3e39 | 4447 | { |
04bd08de | 4448 | volatile struct gdb_exception ex; |
2d717e4f | 4449 | |
04bd08de TT |
4450 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4451 | { | |
4452 | remote_start_remote (from_tty, target, extended_p); | |
4453 | } | |
109c3e39 AC |
4454 | if (ex.reason < 0) |
4455 | { | |
c8d104ad PA |
4456 | /* Pop the partially set up target - unless something else did |
4457 | already before throwing the exception. */ | |
5d93a237 | 4458 | if (rs->remote_desc != NULL) |
78a095c3 | 4459 | remote_unpush_target (); |
c6ebd6cf | 4460 | if (target_async_permitted) |
109c3e39 AC |
4461 | wait_forever_enabled_p = 1; |
4462 | throw_exception (ex); | |
4463 | } | |
4464 | } | |
c906108c | 4465 | |
c6ebd6cf | 4466 | if (target_async_permitted) |
92d1e331 | 4467 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4468 | } |
4469 | ||
c906108c SS |
4470 | /* This takes a program previously attached to and detaches it. After |
4471 | this is done, GDB can be used to debug some other program. We | |
4472 | better not have left any breakpoints in the target program or it'll | |
4473 | die when it hits one. */ | |
4474 | ||
4475 | static void | |
52554a0e | 4476 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4477 | { |
82f73884 | 4478 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4479 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4480 | |
4481 | if (args) | |
8a3fe4f8 | 4482 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4483 | |
2d717e4f DJ |
4484 | if (!target_has_execution) |
4485 | error (_("No process to detach from.")); | |
4486 | ||
7cee1e54 PA |
4487 | if (from_tty) |
4488 | { | |
4489 | char *exec_file = get_exec_file (0); | |
4490 | if (exec_file == NULL) | |
4491 | exec_file = ""; | |
4492 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4493 | target_pid_to_str (pid_to_ptid (pid))); | |
4494 | gdb_flush (gdb_stdout); | |
4495 | } | |
4496 | ||
c906108c | 4497 | /* Tell the remote target to detach. */ |
82f73884 | 4498 | if (remote_multi_process_p (rs)) |
bba74b36 | 4499 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4500 | else |
4501 | strcpy (rs->buf, "D"); | |
4502 | ||
4ddda9b5 PA |
4503 | putpkt (rs->buf); |
4504 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4505 | ||
82f73884 PA |
4506 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4507 | ; | |
4508 | else if (rs->buf[0] == '\0') | |
4509 | error (_("Remote doesn't know how to detach")); | |
4510 | else | |
4ddda9b5 | 4511 | error (_("Can't detach process.")); |
c906108c | 4512 | |
7cee1e54 PA |
4513 | if (from_tty && !extended) |
4514 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4515 | |
82f73884 | 4516 | target_mourn_inferior (); |
2d717e4f DJ |
4517 | } |
4518 | ||
4519 | static void | |
52554a0e | 4520 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4521 | { |
4522 | remote_detach_1 (args, from_tty, 0); | |
4523 | } | |
4524 | ||
4525 | static void | |
52554a0e | 4526 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4527 | { |
4528 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4529 | } |
4530 | ||
6ad8ae5c DJ |
4531 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4532 | ||
43ff13b4 | 4533 | static void |
597320e7 | 4534 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4535 | { |
43ff13b4 | 4536 | if (args) |
2d717e4f | 4537 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4538 | |
2d717e4f DJ |
4539 | /* Make sure we unpush even the extended remote targets; mourn |
4540 | won't do it. So call remote_mourn_1 directly instead of | |
4541 | target_mourn_inferior. */ | |
4542 | remote_mourn_1 (target); | |
4543 | ||
43ff13b4 JM |
4544 | if (from_tty) |
4545 | puts_filtered ("Ending remote debugging.\n"); | |
4546 | } | |
4547 | ||
2d717e4f DJ |
4548 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4549 | be chatty about it. */ | |
4550 | ||
4551 | static void | |
4552 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4553 | { | |
4554 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4555 | int pid; |
96ef3384 | 4556 | char *wait_status = NULL; |
2d717e4f | 4557 | |
74164c56 | 4558 | pid = parse_pid_to_attach (args); |
2d717e4f | 4559 | |
74164c56 JK |
4560 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4561 | way as in other targets. */ | |
2d717e4f DJ |
4562 | |
4563 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4564 | error (_("This target does not support attaching to a process")); | |
4565 | ||
7cee1e54 PA |
4566 | if (from_tty) |
4567 | { | |
4568 | char *exec_file = get_exec_file (0); | |
4569 | ||
4570 | if (exec_file) | |
4571 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4572 | target_pid_to_str (pid_to_ptid (pid))); | |
4573 | else | |
4574 | printf_unfiltered (_("Attaching to %s\n"), | |
4575 | target_pid_to_str (pid_to_ptid (pid))); | |
4576 | ||
4577 | gdb_flush (gdb_stdout); | |
4578 | } | |
4579 | ||
bba74b36 | 4580 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4581 | putpkt (rs->buf); |
4582 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4583 | ||
3e43a32a MS |
4584 | if (packet_ok (rs->buf, |
4585 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4586 | { |
74531fed PA |
4587 | if (!non_stop) |
4588 | { | |
4589 | /* Save the reply for later. */ | |
4590 | wait_status = alloca (strlen (rs->buf) + 1); | |
4591 | strcpy (wait_status, rs->buf); | |
4592 | } | |
4593 | else if (strcmp (rs->buf, "OK") != 0) | |
4594 | error (_("Attaching to %s failed with: %s"), | |
4595 | target_pid_to_str (pid_to_ptid (pid)), | |
4596 | rs->buf); | |
2d717e4f DJ |
4597 | } |
4598 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4599 | error (_("This target does not support attaching to a process")); | |
4600 | else | |
4601 | error (_("Attaching to %s failed"), | |
4602 | target_pid_to_str (pid_to_ptid (pid))); | |
4603 | ||
49c62f2e | 4604 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4605 | |
2d717e4f | 4606 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4607 | |
bad34192 PA |
4608 | if (non_stop) |
4609 | { | |
4610 | struct thread_info *thread; | |
79d7f229 | 4611 | |
bad34192 PA |
4612 | /* Get list of threads. */ |
4613 | remote_threads_info (target); | |
82f73884 | 4614 | |
bad34192 PA |
4615 | thread = first_thread_of_process (pid); |
4616 | if (thread) | |
4617 | inferior_ptid = thread->ptid; | |
4618 | else | |
4619 | inferior_ptid = pid_to_ptid (pid); | |
4620 | ||
4621 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4622 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4623 | } |
74531fed | 4624 | else |
bad34192 PA |
4625 | { |
4626 | /* Now, if we have thread information, update inferior_ptid. */ | |
4627 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4628 | ||
4629 | /* Add the main thread to the thread list. */ | |
4630 | add_thread_silent (inferior_ptid); | |
4631 | } | |
c0a2216e | 4632 | |
96ef3384 UW |
4633 | /* Next, if the target can specify a description, read it. We do |
4634 | this before anything involving memory or registers. */ | |
4635 | target_find_description (); | |
4636 | ||
74531fed PA |
4637 | if (!non_stop) |
4638 | { | |
4639 | /* Use the previously fetched status. */ | |
4640 | gdb_assert (wait_status != NULL); | |
4641 | ||
4642 | if (target_can_async_p ()) | |
4643 | { | |
722247f1 YQ |
4644 | struct notif_event *reply |
4645 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4646 | |
722247f1 | 4647 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4648 | |
4649 | target_async (inferior_event_handler, 0); | |
4650 | } | |
4651 | else | |
4652 | { | |
4653 | gdb_assert (wait_status != NULL); | |
4654 | strcpy (rs->buf, wait_status); | |
4655 | rs->cached_wait_status = 1; | |
4656 | } | |
4657 | } | |
4658 | else | |
4659 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4660 | } |
4661 | ||
4662 | static void | |
136d6dae | 4663 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4664 | { |
136d6dae | 4665 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4666 | } |
4667 | ||
c906108c SS |
4668 | /* Convert hex digit A to a number. */ |
4669 | ||
30559e10 | 4670 | static int |
fba45db2 | 4671 | fromhex (int a) |
c906108c SS |
4672 | { |
4673 | if (a >= '0' && a <= '9') | |
4674 | return a - '0'; | |
4675 | else if (a >= 'a' && a <= 'f') | |
4676 | return a - 'a' + 10; | |
4677 | else if (a >= 'A' && a <= 'F') | |
4678 | return a - 'A' + 10; | |
c5aa993b | 4679 | else |
8a3fe4f8 | 4680 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4681 | } |
4682 | ||
00bf0b85 | 4683 | int |
cfd77fa1 | 4684 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4685 | { |
4686 | int i; | |
4687 | ||
30559e10 MS |
4688 | for (i = 0; i < count; i++) |
4689 | { | |
4690 | if (hex[0] == 0 || hex[1] == 0) | |
4691 | { | |
4692 | /* Hex string is short, or of uneven length. | |
23860348 | 4693 | Return the count that has been converted so far. */ |
30559e10 MS |
4694 | return i; |
4695 | } | |
4696 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4697 | hex += 2; | |
4698 | } | |
4699 | return i; | |
4700 | } | |
4701 | ||
c906108c SS |
4702 | /* Convert number NIB to a hex digit. */ |
4703 | ||
4704 | static int | |
fba45db2 | 4705 | tohex (int nib) |
c906108c SS |
4706 | { |
4707 | if (nib < 10) | |
c5aa993b | 4708 | return '0' + nib; |
c906108c | 4709 | else |
c5aa993b | 4710 | return 'a' + nib - 10; |
c906108c | 4711 | } |
30559e10 | 4712 | |
00bf0b85 | 4713 | int |
cfd77fa1 | 4714 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4715 | { |
4716 | int i; | |
a744cf53 | 4717 | |
23860348 | 4718 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4719 | if (count == 0) |
cfd77fa1 | 4720 | count = strlen ((char *) bin); |
30559e10 MS |
4721 | |
4722 | for (i = 0; i < count; i++) | |
4723 | { | |
4724 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4725 | *hex++ = tohex (*bin++ & 0xf); | |
4726 | } | |
4727 | *hex = 0; | |
4728 | return i; | |
4729 | } | |
c906108c | 4730 | \f |
506fb367 DJ |
4731 | /* Check for the availability of vCont. This function should also check |
4732 | the response. */ | |
c906108c SS |
4733 | |
4734 | static void | |
6d820c5c | 4735 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4736 | { |
2e9f7625 | 4737 | char *buf; |
6d820c5c | 4738 | |
2e9f7625 DJ |
4739 | strcpy (rs->buf, "vCont?"); |
4740 | putpkt (rs->buf); | |
6d820c5c | 4741 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4742 | buf = rs->buf; |
c906108c | 4743 | |
506fb367 DJ |
4744 | /* Make sure that the features we assume are supported. */ |
4745 | if (strncmp (buf, "vCont", 5) == 0) | |
4746 | { | |
4747 | char *p = &buf[5]; | |
4748 | int support_s, support_S, support_c, support_C; | |
4749 | ||
4750 | support_s = 0; | |
4751 | support_S = 0; | |
4752 | support_c = 0; | |
4753 | support_C = 0; | |
d458bd84 | 4754 | rs->supports_vCont.t = 0; |
c1e36e3e | 4755 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4756 | while (p && *p == ';') |
4757 | { | |
4758 | p++; | |
4759 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4760 | support_s = 1; | |
4761 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4762 | support_S = 1; | |
4763 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4764 | support_c = 1; | |
4765 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4766 | support_C = 1; | |
74531fed | 4767 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4768 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4769 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4770 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4771 | |
4772 | p = strchr (p, ';'); | |
4773 | } | |
c906108c | 4774 | |
506fb367 DJ |
4775 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4776 | BUF will make packet_ok disable the packet. */ | |
4777 | if (!support_s || !support_S || !support_c || !support_C) | |
4778 | buf[0] = 0; | |
4779 | } | |
c906108c | 4780 | |
444abaca | 4781 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4782 | } |
c906108c | 4783 | |
0d8f58ca PA |
4784 | /* Helper function for building "vCont" resumptions. Write a |
4785 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4786 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4787 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4788 | resumed thread should be single-stepped and/or signalled. If PTID | |
4789 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4790 | represents a process, then all threads of the process are resumed; | |
4791 | the thread to be stepped and/or signalled is given in the global | |
4792 | INFERIOR_PTID. */ | |
4793 | ||
4794 | static char * | |
4795 | append_resumption (char *p, char *endp, | |
2ea28649 | 4796 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4797 | { |
4798 | struct remote_state *rs = get_remote_state (); | |
4799 | ||
a493e3e2 | 4800 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4801 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4802 | else if (step |
4803 | /* GDB is willing to range step. */ | |
4804 | && use_range_stepping | |
4805 | /* Target supports range stepping. */ | |
4806 | && rs->supports_vCont.r | |
4807 | /* We don't currently support range stepping multiple | |
4808 | threads with a wildcard (though the protocol allows it, | |
4809 | so stubs shouldn't make an active effort to forbid | |
4810 | it). */ | |
4811 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4812 | { | |
4813 | struct thread_info *tp; | |
4814 | ||
4815 | if (ptid_equal (ptid, minus_one_ptid)) | |
4816 | { | |
4817 | /* If we don't know about the target thread's tid, then | |
4818 | we're resuming magic_null_ptid (see caller). */ | |
4819 | tp = find_thread_ptid (magic_null_ptid); | |
4820 | } | |
4821 | else | |
4822 | tp = find_thread_ptid (ptid); | |
4823 | gdb_assert (tp != NULL); | |
4824 | ||
4825 | if (tp->control.may_range_step) | |
4826 | { | |
4827 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4828 | ||
4829 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4830 | phex_nz (tp->control.step_range_start, | |
4831 | addr_size), | |
4832 | phex_nz (tp->control.step_range_end, | |
4833 | addr_size)); | |
4834 | } | |
4835 | else | |
4836 | p += xsnprintf (p, endp - p, ";s"); | |
4837 | } | |
0d8f58ca PA |
4838 | else if (step) |
4839 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4840 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4841 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4842 | else | |
4843 | p += xsnprintf (p, endp - p, ";c"); | |
4844 | ||
4845 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4846 | { | |
4847 | ptid_t nptid; | |
4848 | ||
4849 | /* All (-1) threads of process. */ | |
4850 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4851 | ||
4852 | p += xsnprintf (p, endp - p, ":"); | |
4853 | p = write_ptid (p, endp, nptid); | |
4854 | } | |
4855 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4856 | { | |
4857 | p += xsnprintf (p, endp - p, ":"); | |
4858 | p = write_ptid (p, endp, ptid); | |
4859 | } | |
4860 | ||
4861 | return p; | |
4862 | } | |
4863 | ||
e5ef252a PA |
4864 | /* Append a vCont continue-with-signal action for threads that have a |
4865 | non-zero stop signal. */ | |
4866 | ||
4867 | static char * | |
4868 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4869 | { | |
4870 | struct thread_info *thread; | |
4871 | ||
4872 | ALL_THREADS (thread) | |
4873 | if (ptid_match (thread->ptid, ptid) | |
4874 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4875 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4876 | && signal_pass_state (thread->suspend.stop_signal)) | |
4877 | { | |
4878 | p = append_resumption (p, endp, thread->ptid, | |
4879 | 0, thread->suspend.stop_signal); | |
4880 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4881 | } | |
4882 | ||
4883 | return p; | |
4884 | } | |
4885 | ||
506fb367 DJ |
4886 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4887 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4888 | resumed thread should be single-stepped and/or signalled. If PTID |
4889 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4890 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4891 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4892 | |
506fb367 DJ |
4893 | This function issues a strict subset of all possible vCont commands at the |
4894 | moment. */ | |
44eaed12 | 4895 | |
506fb367 | 4896 | static int |
2ea28649 | 4897 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4898 | { |
4899 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4900 | char *p; |
4901 | char *endp; | |
44eaed12 | 4902 | |
444abaca | 4903 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4904 | remote_vcont_probe (rs); |
44eaed12 | 4905 | |
444abaca | 4906 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4907 | return 0; |
44eaed12 | 4908 | |
82f73884 PA |
4909 | p = rs->buf; |
4910 | endp = rs->buf + get_remote_packet_size (); | |
4911 | ||
506fb367 DJ |
4912 | /* If we could generate a wider range of packets, we'd have to worry |
4913 | about overflowing BUF. Should there be a generic | |
4914 | "multi-part-packet" packet? */ | |
4915 | ||
0d8f58ca PA |
4916 | p += xsnprintf (p, endp - p, "vCont"); |
4917 | ||
79d7f229 | 4918 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4919 | { |
79d7f229 PA |
4920 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4921 | so we don't have any TID numbers the inferior will | |
4922 | understand. Make sure to only send forms that do not specify | |
4923 | a TID. */ | |
a9cbf802 | 4924 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4925 | } |
0d8f58ca | 4926 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4927 | { |
0d8f58ca PA |
4928 | /* Resume all threads (of all processes, or of a single |
4929 | process), with preference for INFERIOR_PTID. This assumes | |
4930 | inferior_ptid belongs to the set of all threads we are about | |
4931 | to resume. */ | |
a493e3e2 | 4932 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4933 | { |
0d8f58ca PA |
4934 | /* Step inferior_ptid, with or without signal. */ |
4935 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4936 | } |
0d8f58ca | 4937 | |
e5ef252a PA |
4938 | /* Also pass down any pending signaled resumption for other |
4939 | threads not the current. */ | |
4940 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4941 | ||
0d8f58ca | 4942 | /* And continue others without a signal. */ |
a493e3e2 | 4943 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4944 | } |
4945 | else | |
506fb367 DJ |
4946 | { |
4947 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4948 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4949 | } |
c906108c | 4950 | |
82f73884 PA |
4951 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4952 | putpkt (rs->buf); | |
506fb367 | 4953 | |
74531fed PA |
4954 | if (non_stop) |
4955 | { | |
4956 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4957 | reply will be reported asynchronously by means of a `%Stop' | |
4958 | notification. */ | |
4959 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4960 | if (strcmp (rs->buf, "OK") != 0) | |
4961 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4962 | } | |
4963 | ||
506fb367 | 4964 | return 1; |
c906108c | 4965 | } |
43ff13b4 | 4966 | |
506fb367 DJ |
4967 | /* Tell the remote machine to resume. */ |
4968 | ||
43ff13b4 | 4969 | static void |
28439f5e | 4970 | remote_resume (struct target_ops *ops, |
2ea28649 | 4971 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4972 | { |
d01949b6 | 4973 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4974 | char *buf; |
43ff13b4 | 4975 | |
722247f1 YQ |
4976 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4977 | (explained in remote-notif.c:handle_notification) so | |
4978 | remote_notif_process is not called. We need find a place where | |
4979 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4980 | before resuming inferior, because inferior was stopped and no RSP | |
4981 | traffic at that moment. */ | |
4982 | if (!non_stop) | |
5965e028 | 4983 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4984 | |
b73be471 | 4985 | rs->last_sent_signal = siggnal; |
280ceea3 | 4986 | rs->last_sent_step = step; |
43ff13b4 | 4987 | |
506fb367 | 4988 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4989 | /* No reverse support (yet) for vCont. */ |
4990 | if (execution_direction != EXEC_REVERSE) | |
4991 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4992 | goto done; | |
506fb367 | 4993 | |
79d7f229 PA |
4994 | /* All other supported resume packets do use Hc, so set the continue |
4995 | thread. */ | |
4996 | if (ptid_equal (ptid, minus_one_ptid)) | |
4997 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4998 | else |
79d7f229 | 4999 | set_continue_thread (ptid); |
506fb367 | 5000 | |
2e9f7625 | 5001 | buf = rs->buf; |
b2175913 MS |
5002 | if (execution_direction == EXEC_REVERSE) |
5003 | { | |
5004 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5005 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5006 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5007 | siggnal); |
40ab02ce MS |
5008 | |
5009 | if (step | |
5010 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
5011 | error (_("Remote reverse-step not supported.")); | |
5012 | if (!step | |
5013 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 5014 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5015 | |
b2175913 MS |
5016 | strcpy (buf, step ? "bs" : "bc"); |
5017 | } | |
a493e3e2 | 5018 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5019 | { |
5020 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5021 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5022 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5023 | buf[3] = '\0'; |
5024 | } | |
5025 | else | |
c5aa993b | 5026 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5027 | |
44eaed12 | 5028 | putpkt (buf); |
43ff13b4 | 5029 | |
75c99385 | 5030 | done: |
2acceee2 | 5031 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5032 | with the event loop. NOTE: this is the one place where all the |
5033 | execution commands end up. We could alternatively do this in each | |
23860348 | 5034 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5035 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5036 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5037 | NOT asynchronously. */ |
362646f5 | 5038 | if (target_can_async_p ()) |
2acceee2 | 5039 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
5040 | |
5041 | /* We've just told the target to resume. The remote server will | |
5042 | wait for the inferior to stop, and then send a stop reply. In | |
5043 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5044 | because the stub wouldn't be ready to process it. This applies |
5045 | only to the base all-stop protocol, however. In non-stop (which | |
5046 | only supports vCont), the stub replies with an "OK", and is | |
5047 | immediate able to process further serial input. */ | |
5048 | if (!non_stop) | |
5049 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5050 | } |
c906108c | 5051 | \f |
43ff13b4 JM |
5052 | |
5053 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5054 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5055 | static void |
934b9bac | 5056 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5057 | { |
934b9bac | 5058 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5059 | } |
5060 | ||
23860348 | 5061 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5062 | static void |
934b9bac | 5063 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5064 | { |
934b9bac JK |
5065 | signal (sig, async_handle_remote_sigint_twice); |
5066 | mark_async_signal_handler (async_sigint_remote_token); | |
43ff13b4 JM |
5067 | } |
5068 | ||
5069 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5070 | sent once. It will take effect the second time that the user sends | |
23860348 | 5071 | a ^C. */ |
43ff13b4 | 5072 | static void |
934b9bac | 5073 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5074 | { |
934b9bac JK |
5075 | signal (sig, async_handle_remote_sigint); |
5076 | mark_async_signal_handler (async_sigint_remote_twice_token); | |
43ff13b4 JM |
5077 | } |
5078 | ||
6426a772 | 5079 | /* Perform the real interruption of the target execution, in response |
23860348 | 5080 | to a ^C. */ |
c5aa993b | 5081 | static void |
fba45db2 | 5082 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5083 | { |
5084 | if (remote_debug) | |
248fd3bf | 5085 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5086 | |
94cc34af | 5087 | target_stop (inferior_ptid); |
43ff13b4 JM |
5088 | } |
5089 | ||
0df8b418 | 5090 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5091 | up on the target alltogether. */ |
47e1ce27 | 5092 | static void |
fba45db2 | 5093 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5094 | { |
2df3850c | 5095 | if (remote_debug) |
248fd3bf | 5096 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5097 | |
5098 | interrupt_query (); | |
43ff13b4 JM |
5099 | } |
5100 | ||
5101 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5102 | stopped. */ |
6426a772 | 5103 | static void |
934b9bac | 5104 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5105 | { |
5106 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5107 | } |
5108 | ||
c906108c SS |
5109 | /* Send ^C to target to halt it. Target will respond, and send us a |
5110 | packet. */ | |
507f3c78 | 5111 | static void (*ofunc) (int); |
c906108c | 5112 | |
0df8b418 MS |
5113 | /* The command line interface's stop routine. This function is installed |
5114 | as a signal handler for SIGINT. The first time a user requests a | |
5115 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5116 | response from the target (it didn't stop when the user requested it), |
23860348 | 5117 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5118 | static void |
934b9bac | 5119 | sync_remote_interrupt (int signo) |
c906108c | 5120 | { |
23860348 | 5121 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5122 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5123 | |
934b9bac | 5124 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5125 | } |
5126 | ||
5127 | /* The user typed ^C twice. */ | |
5128 | ||
5129 | static void | |
934b9bac | 5130 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5131 | { |
5132 | signal (signo, ofunc); | |
934b9bac JK |
5133 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5134 | signal (signo, sync_remote_interrupt); | |
c906108c | 5135 | } |
7a292a7a | 5136 | |
74531fed PA |
5137 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5138 | thread, all threads of a remote process, or all threads of all | |
5139 | processes. */ | |
5140 | ||
5141 | static void | |
5142 | remote_stop_ns (ptid_t ptid) | |
5143 | { | |
5144 | struct remote_state *rs = get_remote_state (); | |
5145 | char *p = rs->buf; | |
5146 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
5147 | |
5148 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
5149 | remote_vcont_probe (rs); | |
5150 | ||
d458bd84 | 5151 | if (!rs->supports_vCont.t) |
74531fed PA |
5152 | error (_("Remote server does not support stopping threads")); |
5153 | ||
f91d3df5 PA |
5154 | if (ptid_equal (ptid, minus_one_ptid) |
5155 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5156 | p += xsnprintf (p, endp - p, "vCont;t"); |
5157 | else | |
5158 | { | |
5159 | ptid_t nptid; | |
5160 | ||
74531fed PA |
5161 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5162 | ||
5163 | if (ptid_is_pid (ptid)) | |
5164 | /* All (-1) threads of process. */ | |
5165 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
5166 | else | |
5167 | { | |
5168 | /* Small optimization: if we already have a stop reply for | |
5169 | this thread, no use in telling the stub we want this | |
5170 | stopped. */ | |
5171 | if (peek_stop_reply (ptid)) | |
5172 | return; | |
5173 | ||
5174 | nptid = ptid; | |
5175 | } | |
5176 | ||
a9cbf802 | 5177 | write_ptid (p, endp, nptid); |
74531fed PA |
5178 | } |
5179 | ||
5180 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5181 | come in asynchronously by notification. */ | |
5182 | putpkt (rs->buf); | |
5183 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5184 | if (strcmp (rs->buf, "OK") != 0) | |
5185 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5186 | } | |
5187 | ||
5188 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5189 | remote target. It is undefined which thread of which process | |
5190 | reports the stop. */ | |
5191 | ||
5192 | static void | |
5193 | remote_stop_as (ptid_t ptid) | |
5194 | { | |
5195 | struct remote_state *rs = get_remote_state (); | |
5196 | ||
3a29589a DJ |
5197 | rs->ctrlc_pending_p = 1; |
5198 | ||
74531fed PA |
5199 | /* If the inferior is stopped already, but the core didn't know |
5200 | about it yet, just ignore the request. The cached wait status | |
5201 | will be collected in remote_wait. */ | |
5202 | if (rs->cached_wait_status) | |
5203 | return; | |
5204 | ||
9a7071a8 JB |
5205 | /* Send interrupt_sequence to remote target. */ |
5206 | send_interrupt_sequence (); | |
74531fed PA |
5207 | } |
5208 | ||
0df8b418 | 5209 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5210 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5211 | will eventually end up here. */ |
74531fed | 5212 | |
c906108c | 5213 | static void |
94cc34af | 5214 | remote_stop (ptid_t ptid) |
c906108c | 5215 | { |
7a292a7a | 5216 | if (remote_debug) |
0f71a2f6 | 5217 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5218 | |
74531fed PA |
5219 | if (non_stop) |
5220 | remote_stop_ns (ptid); | |
c906108c | 5221 | else |
74531fed | 5222 | remote_stop_as (ptid); |
c906108c SS |
5223 | } |
5224 | ||
5225 | /* Ask the user what to do when an interrupt is received. */ | |
5226 | ||
5227 | static void | |
fba45db2 | 5228 | interrupt_query (void) |
c906108c SS |
5229 | { |
5230 | target_terminal_ours (); | |
5231 | ||
74531fed | 5232 | if (target_can_async_p ()) |
c906108c | 5233 | { |
74531fed | 5234 | signal (SIGINT, handle_sigint); |
039e3c22 | 5235 | quit (); |
c906108c | 5236 | } |
74531fed PA |
5237 | else |
5238 | { | |
9e2f0ad4 HZ |
5239 | if (query (_("Interrupted while waiting for the program.\n\ |
5240 | Give up (and stop debugging it)? "))) | |
74531fed | 5241 | { |
78a095c3 | 5242 | remote_unpush_target (); |
039e3c22 | 5243 | quit (); |
74531fed PA |
5244 | } |
5245 | } | |
c906108c SS |
5246 | |
5247 | target_terminal_inferior (); | |
5248 | } | |
5249 | ||
6426a772 JM |
5250 | /* Enable/disable target terminal ownership. Most targets can use |
5251 | terminal groups to control terminal ownership. Remote targets are | |
5252 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5253 | is required. */ |
6426a772 JM |
5254 | |
5255 | static void | |
75c99385 | 5256 | remote_terminal_inferior (void) |
6426a772 | 5257 | { |
c6ebd6cf | 5258 | if (!target_async_permitted) |
75c99385 PA |
5259 | /* Nothing to do. */ |
5260 | return; | |
5261 | ||
d9d2d8b6 PA |
5262 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5263 | idempotent. The event-loop GDB talking to an asynchronous target | |
5264 | with a synchronous command calls this function from both | |
5265 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5266 | transfer the terminal to the target when it shouldn't this guard | |
5267 | can go away. */ | |
6426a772 JM |
5268 | if (!remote_async_terminal_ours_p) |
5269 | return; | |
5270 | delete_file_handler (input_fd); | |
5271 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5272 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5273 | /* NOTE: At this point we could also register our selves as the |
5274 | recipient of all input. Any characters typed could then be | |
23860348 | 5275 | passed on down to the target. */ |
6426a772 JM |
5276 | } |
5277 | ||
5278 | static void | |
75c99385 | 5279 | remote_terminal_ours (void) |
6426a772 | 5280 | { |
c6ebd6cf | 5281 | if (!target_async_permitted) |
75c99385 PA |
5282 | /* Nothing to do. */ |
5283 | return; | |
5284 | ||
5285 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5286 | if (remote_async_terminal_ours_p) |
5287 | return; | |
934b9bac | 5288 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5289 | add_file_handler (input_fd, stdin_event_handler, 0); |
5290 | remote_async_terminal_ours_p = 1; | |
5291 | } | |
5292 | ||
176a6961 | 5293 | static void |
917317f4 | 5294 | remote_console_output (char *msg) |
c906108c SS |
5295 | { |
5296 | char *p; | |
5297 | ||
c5aa993b | 5298 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5299 | { |
5300 | char tb[2]; | |
5301 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5302 | |
c906108c SS |
5303 | tb[0] = c; |
5304 | tb[1] = 0; | |
43ff13b4 | 5305 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5306 | } |
00db5b94 PA |
5307 | gdb_flush (gdb_stdtarg); |
5308 | } | |
74531fed PA |
5309 | |
5310 | typedef struct cached_reg | |
5311 | { | |
5312 | int num; | |
5313 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5314 | } cached_reg_t; | |
5315 | ||
5316 | DEF_VEC_O(cached_reg_t); | |
5317 | ||
722247f1 | 5318 | typedef struct stop_reply |
74531fed | 5319 | { |
722247f1 | 5320 | struct notif_event base; |
74531fed | 5321 | |
722247f1 | 5322 | /* The identifier of the thread about this event */ |
74531fed PA |
5323 | ptid_t ptid; |
5324 | ||
340e3c99 | 5325 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5326 | connection, represented by a remote_state object, is closed, |
5327 | all the associated stop_reply events should be released. */ | |
5328 | struct remote_state *rs; | |
5329 | ||
74531fed PA |
5330 | struct target_waitstatus ws; |
5331 | ||
15148d6a PA |
5332 | /* Expedited registers. This makes remote debugging a bit more |
5333 | efficient for those targets that provide critical registers as | |
5334 | part of their normal status mechanism (as another roundtrip to | |
5335 | fetch them is avoided). */ | |
74531fed PA |
5336 | VEC(cached_reg_t) *regcache; |
5337 | ||
5338 | int stopped_by_watchpoint_p; | |
5339 | CORE_ADDR watch_data_address; | |
5340 | ||
dc146f7c | 5341 | int core; |
722247f1 | 5342 | } *stop_reply_p; |
a744cf53 | 5343 | |
722247f1 YQ |
5344 | DECLARE_QUEUE_P (stop_reply_p); |
5345 | DEFINE_QUEUE_P (stop_reply_p); | |
5346 | /* The list of already fetched and acknowledged stop events. This | |
5347 | queue is used for notification Stop, and other notifications | |
5348 | don't need queue for their events, because the notification events | |
5349 | of Stop can't be consumed immediately, so that events should be | |
5350 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5351 | time. Other notifications can consume their events immediately, | |
5352 | so queue is not needed for them. */ | |
5353 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5354 | |
5355 | static void | |
5356 | stop_reply_xfree (struct stop_reply *r) | |
5357 | { | |
f48ff2a7 | 5358 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5359 | } |
5360 | ||
722247f1 YQ |
5361 | static void |
5362 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5363 | struct notif_event *event) | |
5364 | { | |
5365 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5366 | } | |
5367 | ||
5368 | static void | |
5369 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5370 | struct notif_event *event) | |
5371 | { | |
5372 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5373 | ||
5374 | /* acknowledge */ | |
5375 | putpkt ((char *) self->ack_command); | |
5376 | ||
5377 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5378 | /* We got an unknown stop reply. */ | |
5379 | error (_("Unknown stop reply")); | |
5380 | ||
5381 | push_stop_reply (stop_reply); | |
5382 | } | |
5383 | ||
5384 | static int | |
5385 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5386 | { | |
5387 | /* We can't get pending events in remote_notif_process for | |
5388 | notification stop, and we have to do this in remote_wait_ns | |
5389 | instead. If we fetch all queued events from stub, remote stub | |
5390 | may exit and we have no chance to process them back in | |
5391 | remote_wait_ns. */ | |
5392 | mark_async_event_handler (remote_async_inferior_event_token); | |
5393 | return 0; | |
5394 | } | |
5395 | ||
5396 | static void | |
5397 | stop_reply_dtr (struct notif_event *event) | |
5398 | { | |
5399 | struct stop_reply *r = (struct stop_reply *) event; | |
5400 | ||
5401 | VEC_free (cached_reg_t, r->regcache); | |
5402 | } | |
5403 | ||
5404 | static struct notif_event * | |
5405 | remote_notif_stop_alloc_reply (void) | |
5406 | { | |
5407 | struct notif_event *r | |
70ba0933 | 5408 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5409 | |
5410 | r->dtr = stop_reply_dtr; | |
5411 | ||
5412 | return r; | |
5413 | } | |
5414 | ||
5415 | /* A client of notification Stop. */ | |
5416 | ||
5417 | struct notif_client notif_client_stop = | |
5418 | { | |
5419 | "Stop", | |
5420 | "vStopped", | |
5421 | remote_notif_stop_parse, | |
5422 | remote_notif_stop_ack, | |
5423 | remote_notif_stop_can_get_pending_events, | |
5424 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5425 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5426 | }; |
5427 | ||
5428 | /* A parameter to pass data in and out. */ | |
5429 | ||
5430 | struct queue_iter_param | |
5431 | { | |
5432 | void *input; | |
5433 | struct stop_reply *output; | |
5434 | }; | |
5435 | ||
f48ff2a7 YQ |
5436 | /* Remove stop replies in the queue if its pid is equal to the given |
5437 | inferior's pid. */ | |
722247f1 YQ |
5438 | |
5439 | static int | |
f48ff2a7 YQ |
5440 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5441 | QUEUE_ITER (stop_reply_p) *iter, | |
5442 | stop_reply_p event, | |
5443 | void *data) | |
722247f1 YQ |
5444 | { |
5445 | struct queue_iter_param *param = data; | |
5446 | struct inferior *inf = param->input; | |
5447 | ||
f48ff2a7 | 5448 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5449 | { |
5450 | stop_reply_xfree (event); | |
5451 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5452 | } | |
5453 | ||
5454 | return 1; | |
5455 | } | |
5456 | ||
f48ff2a7 | 5457 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5458 | |
74531fed | 5459 | static void |
5f4cf0bb | 5460 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5461 | { |
722247f1 YQ |
5462 | int i; |
5463 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5464 | struct stop_reply *reply; |
5465 | struct remote_state *rs = get_remote_state (); | |
5466 | struct remote_notif_state *rns = rs->notif_state; | |
5467 | ||
5468 | /* This function can be notified when an inferior exists. When the | |
5469 | target is not remote, the notification state is NULL. */ | |
5470 | if (rs->remote_desc == NULL) | |
5471 | return; | |
5472 | ||
5473 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5474 | |
74531fed | 5475 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5476 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5477 | { |
722247f1 | 5478 | stop_reply_xfree (reply); |
f48ff2a7 | 5479 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5480 | } |
c906108c | 5481 | |
722247f1 YQ |
5482 | param.input = inf; |
5483 | param.output = NULL; | |
74531fed PA |
5484 | /* Discard the stop replies we have already pulled with |
5485 | vStopped. */ | |
722247f1 | 5486 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5487 | remove_stop_reply_for_inferior, ¶m); |
5488 | } | |
5489 | ||
bcc75809 YQ |
5490 | /* If its remote state is equal to the given remote state, |
5491 | remove EVENT from the stop reply queue. */ | |
5492 | ||
5493 | static int | |
5494 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5495 | QUEUE_ITER (stop_reply_p) *iter, | |
5496 | stop_reply_p event, | |
5497 | void *data) | |
5498 | { | |
5499 | struct queue_iter_param *param = data; | |
5500 | struct remote_state *rs = param->input; | |
5501 | ||
5502 | if (event->rs == rs) | |
5503 | { | |
5504 | stop_reply_xfree (event); | |
5505 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5506 | } | |
5507 | ||
5508 | return 1; | |
5509 | } | |
5510 | ||
5511 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5512 | |
5513 | static void | |
bcc75809 | 5514 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5515 | { |
5516 | struct queue_iter_param param; | |
5517 | ||
bcc75809 | 5518 | param.input = rs; |
f48ff2a7 YQ |
5519 | param.output = NULL; |
5520 | /* Discard the stop replies we have already pulled with | |
5521 | vStopped. */ | |
5522 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5523 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5524 | } |
74531fed | 5525 | |
722247f1 YQ |
5526 | /* A parameter to pass data in and out. */ |
5527 | ||
5528 | static int | |
5529 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5530 | QUEUE_ITER (stop_reply_p) *iter, | |
5531 | stop_reply_p event, | |
5532 | void *data) | |
5533 | { | |
5534 | struct queue_iter_param *param = data; | |
5535 | ptid_t *ptid = param->input; | |
5536 | ||
5537 | if (ptid_match (event->ptid, *ptid)) | |
5538 | { | |
5539 | param->output = event; | |
5540 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5541 | return 0; | |
c8e38a49 | 5542 | } |
722247f1 YQ |
5543 | |
5544 | return 1; | |
74531fed | 5545 | } |
43ff13b4 | 5546 | |
722247f1 YQ |
5547 | /* Remove the first reply in 'stop_reply_queue' which matches |
5548 | PTID. */ | |
2e9f7625 | 5549 | |
722247f1 YQ |
5550 | static struct stop_reply * |
5551 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5552 | { |
722247f1 YQ |
5553 | struct queue_iter_param param; |
5554 | ||
5555 | param.input = &ptid; | |
5556 | param.output = NULL; | |
5557 | ||
5558 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5559 | remote_notif_remove_once_on_match, ¶m); | |
5560 | if (notif_debug) | |
5561 | fprintf_unfiltered (gdb_stdlog, | |
5562 | "notif: discard queued event: 'Stop' in %s\n", | |
5563 | target_pid_to_str (ptid)); | |
a744cf53 | 5564 | |
722247f1 | 5565 | return param.output; |
74531fed | 5566 | } |
75c99385 | 5567 | |
74531fed PA |
5568 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5569 | remove it from the queue, and return it. Returns NULL if none is | |
5570 | found. If there are still queued events left to process, tell the | |
5571 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5572 | |
74531fed PA |
5573 | static struct stop_reply * |
5574 | queued_stop_reply (ptid_t ptid) | |
5575 | { | |
722247f1 | 5576 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5577 | |
722247f1 | 5578 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5579 | /* There's still at least an event left. */ |
5580 | mark_async_event_handler (remote_async_inferior_event_token); | |
5581 | ||
722247f1 | 5582 | return r; |
74531fed PA |
5583 | } |
5584 | ||
5585 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5586 | know that we now have at least one queued event left to pass to the | |
5587 | core side, tell the event loop to get back to target_wait soon. */ | |
5588 | ||
5589 | static void | |
5590 | push_stop_reply (struct stop_reply *new_event) | |
5591 | { | |
722247f1 | 5592 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5593 | |
722247f1 YQ |
5594 | if (notif_debug) |
5595 | fprintf_unfiltered (gdb_stdlog, | |
5596 | "notif: push 'Stop' %s to queue %d\n", | |
5597 | target_pid_to_str (new_event->ptid), | |
5598 | QUEUE_length (stop_reply_p, | |
5599 | stop_reply_queue)); | |
74531fed PA |
5600 | |
5601 | mark_async_event_handler (remote_async_inferior_event_token); | |
5602 | } | |
5603 | ||
722247f1 YQ |
5604 | static int |
5605 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5606 | QUEUE_ITER (stop_reply_p) *iter, | |
5607 | struct stop_reply *event, | |
5608 | void *data) | |
5609 | { | |
5610 | ptid_t *ptid = data; | |
5611 | ||
5612 | return !(ptid_equal (*ptid, event->ptid) | |
5613 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5614 | } | |
5615 | ||
74531fed PA |
5616 | /* Returns true if we have a stop reply for PTID. */ |
5617 | ||
5618 | static int | |
5619 | peek_stop_reply (ptid_t ptid) | |
5620 | { | |
722247f1 YQ |
5621 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5622 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5623 | } |
5624 | ||
5625 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5626 | result is stored in EVENT, or throws an error. */ | |
5627 | ||
5628 | static void | |
5629 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5630 | { | |
5631 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5632 | ULONGEST addr; | |
5633 | char *p; | |
5634 | ||
5635 | event->ptid = null_ptid; | |
bcc75809 | 5636 | event->rs = get_remote_state (); |
74531fed PA |
5637 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5638 | event->ws.value.integer = 0; | |
74531fed PA |
5639 | event->stopped_by_watchpoint_p = 0; |
5640 | event->regcache = NULL; | |
dc146f7c | 5641 | event->core = -1; |
74531fed PA |
5642 | |
5643 | switch (buf[0]) | |
5644 | { | |
5645 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5646 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5647 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5648 | ss = signal number | |
5649 | n... = register number | |
5650 | r... = register contents | |
5651 | */ | |
5652 | ||
5653 | p = &buf[3]; /* after Txx */ | |
5654 | while (*p) | |
5655 | { | |
5656 | char *p1; | |
5657 | char *p_temp; | |
5658 | int fieldsize; | |
5659 | LONGEST pnum = 0; | |
43ff13b4 | 5660 | |
cea39f65 MS |
5661 | /* If the packet contains a register number, save it in |
5662 | pnum and set p1 to point to the character following it. | |
5663 | Otherwise p1 points to p. */ | |
3c3bea1c | 5664 | |
cea39f65 MS |
5665 | /* If this packet is an awatch packet, don't parse the 'a' |
5666 | as a register number. */ | |
c8e38a49 | 5667 | |
dc146f7c VP |
5668 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5669 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5670 | { |
5671 | /* Read the ``P'' register number. */ | |
5672 | pnum = strtol (p, &p_temp, 16); | |
5673 | p1 = p_temp; | |
5674 | } | |
5675 | else | |
5676 | p1 = p; | |
802188a7 | 5677 | |
cea39f65 MS |
5678 | if (p1 == p) /* No register number present here. */ |
5679 | { | |
5680 | p1 = strchr (p, ':'); | |
5681 | if (p1 == NULL) | |
5682 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5683 | Packet: '%s'\n"), |
cea39f65 MS |
5684 | p, buf); |
5685 | if (strncmp (p, "thread", p1 - p) == 0) | |
5686 | event->ptid = read_ptid (++p1, &p); | |
5687 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5688 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5689 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5690 | { | |
5691 | event->stopped_by_watchpoint_p = 1; | |
5692 | p = unpack_varlen_hex (++p1, &addr); | |
5693 | event->watch_data_address = (CORE_ADDR) addr; | |
5694 | } | |
5695 | else if (strncmp (p, "library", p1 - p) == 0) | |
5696 | { | |
5697 | p1++; | |
5698 | p_temp = p1; | |
5699 | while (*p_temp && *p_temp != ';') | |
5700 | p_temp++; | |
c8e38a49 | 5701 | |
5b5596ff | 5702 | event->ws.kind = TARGET_WAITKIND_LOADED; |
cea39f65 MS |
5703 | p = p_temp; |
5704 | } | |
5705 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5706 | { | |
5b5596ff PA |
5707 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; |
5708 | /* p1 will indicate "begin" or "end", but it makes | |
5709 | no difference for now, so ignore it. */ | |
cea39f65 MS |
5710 | p_temp = strchr (p1 + 1, ';'); |
5711 | if (p_temp) | |
c8e38a49 | 5712 | p = p_temp; |
cea39f65 | 5713 | } |
dc146f7c VP |
5714 | else if (strncmp (p, "core", p1 - p) == 0) |
5715 | { | |
5716 | ULONGEST c; | |
a744cf53 | 5717 | |
dc146f7c VP |
5718 | p = unpack_varlen_hex (++p1, &c); |
5719 | event->core = c; | |
5720 | } | |
cea39f65 MS |
5721 | else |
5722 | { | |
5723 | /* Silently skip unknown optional info. */ | |
5724 | p_temp = strchr (p1 + 1, ';'); | |
5725 | if (p_temp) | |
5726 | p = p_temp; | |
5727 | } | |
5728 | } | |
5729 | else | |
5730 | { | |
5731 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5732 | cached_reg_t cached_reg; | |
74531fed | 5733 | |
cea39f65 | 5734 | p = p1; |
75c99385 | 5735 | |
cea39f65 MS |
5736 | if (*p != ':') |
5737 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5738 | Packet: '%s'\n"), |
cea39f65 MS |
5739 | p, buf); |
5740 | ++p; | |
43ff13b4 | 5741 | |
cea39f65 MS |
5742 | if (reg == NULL) |
5743 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5744 | Packet: '%s'\n"), |
7c47795c | 5745 | hex_string (pnum), p, buf); |
c8e38a49 | 5746 | |
cea39f65 | 5747 | cached_reg.num = reg->regnum; |
4100683b | 5748 | |
cea39f65 | 5749 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5750 | register_size (target_gdbarch (), |
cea39f65 MS |
5751 | reg->regnum)); |
5752 | p += 2 * fieldsize; | |
f5656ead | 5753 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5754 | reg->regnum)) |
5755 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5756 | |
cea39f65 MS |
5757 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5758 | } | |
c8e38a49 | 5759 | |
cea39f65 MS |
5760 | if (*p != ';') |
5761 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5762 | buf, p); | |
5763 | ++p; | |
5764 | } | |
5b5596ff PA |
5765 | |
5766 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5767 | break; | |
5768 | ||
c8e38a49 PA |
5769 | /* fall through */ |
5770 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5771 | { |
5772 | int sig; | |
5773 | ||
5774 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5775 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5776 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5777 | event->ws.value.sig = (enum gdb_signal) sig; | |
5778 | else | |
5779 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5780 | } | |
c8e38a49 PA |
5781 | break; |
5782 | case 'W': /* Target exited. */ | |
5783 | case 'X': | |
5784 | { | |
5785 | char *p; | |
5786 | int pid; | |
5787 | ULONGEST value; | |
82f73884 | 5788 | |
c8e38a49 PA |
5789 | /* GDB used to accept only 2 hex chars here. Stubs should |
5790 | only send more if they detect GDB supports multi-process | |
5791 | support. */ | |
5792 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5793 | |
c8e38a49 PA |
5794 | if (buf[0] == 'W') |
5795 | { | |
5796 | /* The remote process exited. */ | |
74531fed PA |
5797 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5798 | event->ws.value.integer = value; | |
c8e38a49 PA |
5799 | } |
5800 | else | |
5801 | { | |
5802 | /* The remote process exited with a signal. */ | |
74531fed | 5803 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5804 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5805 | event->ws.value.sig = (enum gdb_signal) value; | |
5806 | else | |
5807 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5808 | } |
82f73884 | 5809 | |
c8e38a49 PA |
5810 | /* If no process is specified, assume inferior_ptid. */ |
5811 | pid = ptid_get_pid (inferior_ptid); | |
5812 | if (*p == '\0') | |
5813 | ; | |
5814 | else if (*p == ';') | |
5815 | { | |
5816 | p++; | |
5817 | ||
5818 | if (p == '\0') | |
82f73884 | 5819 | ; |
c8e38a49 PA |
5820 | else if (strncmp (p, |
5821 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5822 | { |
c8e38a49 | 5823 | ULONGEST upid; |
a744cf53 | 5824 | |
c8e38a49 PA |
5825 | p += sizeof ("process:") - 1; |
5826 | unpack_varlen_hex (p, &upid); | |
5827 | pid = upid; | |
82f73884 PA |
5828 | } |
5829 | else | |
5830 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5831 | } |
c8e38a49 PA |
5832 | else |
5833 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5834 | event->ptid = pid_to_ptid (pid); |
5835 | } | |
5836 | break; | |
5837 | } | |
5838 | ||
5839 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5840 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5841 | } | |
5842 | ||
722247f1 YQ |
5843 | /* When the stub wants to tell GDB about a new notification reply, it |
5844 | sends a notification (%Stop, for example). Those can come it at | |
5845 | any time, hence, we have to make sure that any pending | |
5846 | putpkt/getpkt sequence we're making is finished, before querying | |
5847 | the stub for more events with the corresponding ack command | |
5848 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5849 | immediately upon receiving the notification, something like this | |
5850 | could happen: | |
74531fed PA |
5851 | |
5852 | 1.1) --> Hg 1 | |
5853 | 1.2) <-- OK | |
5854 | 1.3) --> g | |
5855 | 1.4) <-- %Stop | |
5856 | 1.5) --> vStopped | |
5857 | 1.6) <-- (registers reply to step #1.3) | |
5858 | ||
5859 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5860 | query. | |
5861 | ||
796cb314 | 5862 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5863 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5864 | doing whatever we were doing: | |
5865 | ||
5866 | 2.1) --> Hg 1 | |
5867 | 2.2) <-- OK | |
5868 | 2.3) --> g | |
5869 | 2.4) <-- %Stop | |
5870 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5871 | 2.5) <-- (registers reply to step #2.3) | |
5872 | ||
5873 | Eventualy after step #2.5, we return to the event loop, which | |
5874 | notices there's an event on the | |
5875 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5876 | associated callback --- the function below. At this point, we're | |
5877 | always safe to start a vStopped sequence. : | |
5878 | ||
5879 | 2.6) --> vStopped | |
5880 | 2.7) <-- T05 thread:2 | |
5881 | 2.8) --> vStopped | |
5882 | 2.9) --> OK | |
5883 | */ | |
5884 | ||
722247f1 YQ |
5885 | void |
5886 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5887 | { |
5888 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5889 | |
f48ff2a7 | 5890 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5891 | { |
722247f1 YQ |
5892 | if (notif_debug) |
5893 | fprintf_unfiltered (gdb_stdlog, | |
5894 | "notif: process: '%s' ack pending event\n", | |
5895 | nc->name); | |
74531fed | 5896 | |
722247f1 | 5897 | /* acknowledge */ |
f48ff2a7 YQ |
5898 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5899 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5900 | |
5901 | while (1) | |
5902 | { | |
5903 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5904 | if (strcmp (rs->buf, "OK") == 0) | |
5905 | break; | |
5906 | else | |
722247f1 | 5907 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5908 | } |
5909 | } | |
722247f1 YQ |
5910 | else |
5911 | { | |
5912 | if (notif_debug) | |
5913 | fprintf_unfiltered (gdb_stdlog, | |
5914 | "notif: process: '%s' no pending reply\n", | |
5915 | nc->name); | |
5916 | } | |
74531fed PA |
5917 | } |
5918 | ||
74531fed PA |
5919 | /* Called when it is decided that STOP_REPLY holds the info of the |
5920 | event that is to be returned to the core. This function always | |
5921 | destroys STOP_REPLY. */ | |
5922 | ||
5923 | static ptid_t | |
5924 | process_stop_reply (struct stop_reply *stop_reply, | |
5925 | struct target_waitstatus *status) | |
5926 | { | |
5927 | ptid_t ptid; | |
5928 | ||
5929 | *status = stop_reply->ws; | |
5930 | ptid = stop_reply->ptid; | |
5931 | ||
5932 | /* If no thread/process was reported by the stub, assume the current | |
5933 | inferior. */ | |
5934 | if (ptid_equal (ptid, null_ptid)) | |
5935 | ptid = inferior_ptid; | |
5936 | ||
5f3563ea PA |
5937 | if (status->kind != TARGET_WAITKIND_EXITED |
5938 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5939 | { |
ee154bee TT |
5940 | struct remote_state *rs = get_remote_state (); |
5941 | ||
5f3563ea PA |
5942 | /* Expedited registers. */ |
5943 | if (stop_reply->regcache) | |
5944 | { | |
217f1f79 | 5945 | struct regcache *regcache |
f5656ead | 5946 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5947 | cached_reg_t *reg; |
5948 | int ix; | |
5949 | ||
5950 | for (ix = 0; | |
5951 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5952 | ix++) | |
217f1f79 | 5953 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5954 | VEC_free (cached_reg_t, stop_reply->regcache); |
5955 | } | |
74531fed | 5956 | |
ee154bee TT |
5957 | rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5958 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5959 | |
5960 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5961 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5962 | } |
5963 | ||
74531fed PA |
5964 | stop_reply_xfree (stop_reply); |
5965 | return ptid; | |
5966 | } | |
5967 | ||
5968 | /* The non-stop mode version of target_wait. */ | |
5969 | ||
5970 | static ptid_t | |
47608cb1 | 5971 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5972 | { |
5973 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5974 | struct stop_reply *stop_reply; |
5975 | int ret; | |
fee9eda9 | 5976 | int is_notif = 0; |
74531fed PA |
5977 | |
5978 | /* If in non-stop mode, get out of getpkt even if a | |
5979 | notification is received. */ | |
5980 | ||
5981 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5982 | 0 /* forever */, &is_notif); |
74531fed PA |
5983 | while (1) |
5984 | { | |
fee9eda9 | 5985 | if (ret != -1 && !is_notif) |
74531fed PA |
5986 | switch (rs->buf[0]) |
5987 | { | |
5988 | case 'E': /* Error of some sort. */ | |
5989 | /* We're out of sync with the target now. Did it continue | |
5990 | or not? We can't tell which thread it was in non-stop, | |
5991 | so just ignore this. */ | |
5992 | warning (_("Remote failure reply: %s"), rs->buf); | |
5993 | break; | |
5994 | case 'O': /* Console output. */ | |
5995 | remote_console_output (rs->buf + 1); | |
5996 | break; | |
5997 | default: | |
5998 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5999 | break; | |
6000 | } | |
6001 | ||
6002 | /* Acknowledge a pending stop reply that may have arrived in the | |
6003 | mean time. */ | |
f48ff2a7 | 6004 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6005 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6006 | |
6007 | /* If indeed we noticed a stop reply, we're done. */ | |
6008 | stop_reply = queued_stop_reply (ptid); | |
6009 | if (stop_reply != NULL) | |
6010 | return process_stop_reply (stop_reply, status); | |
6011 | ||
47608cb1 | 6012 | /* Still no event. If we're just polling for an event, then |
74531fed | 6013 | return to the event loop. */ |
47608cb1 | 6014 | if (options & TARGET_WNOHANG) |
74531fed PA |
6015 | { |
6016 | status->kind = TARGET_WAITKIND_IGNORE; | |
6017 | return minus_one_ptid; | |
6018 | } | |
6019 | ||
47608cb1 | 6020 | /* Otherwise do a blocking wait. */ |
74531fed | 6021 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6022 | 1 /* forever */, &is_notif); |
74531fed PA |
6023 | } |
6024 | } | |
6025 | ||
6026 | /* Wait until the remote machine stops, then return, storing status in | |
6027 | STATUS just as `wait' would. */ | |
6028 | ||
6029 | static ptid_t | |
47608cb1 | 6030 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6031 | { |
6032 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6033 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6034 | char *buf; |
74531fed PA |
6035 | struct stop_reply *stop_reply; |
6036 | ||
47608cb1 PA |
6037 | again: |
6038 | ||
74531fed PA |
6039 | status->kind = TARGET_WAITKIND_IGNORE; |
6040 | status->value.integer = 0; | |
6041 | ||
6042 | stop_reply = queued_stop_reply (ptid); | |
6043 | if (stop_reply != NULL) | |
6044 | return process_stop_reply (stop_reply, status); | |
6045 | ||
6046 | if (rs->cached_wait_status) | |
6047 | /* Use the cached wait status, but only once. */ | |
6048 | rs->cached_wait_status = 0; | |
6049 | else | |
6050 | { | |
6051 | int ret; | |
722247f1 | 6052 | int is_notif; |
74531fed PA |
6053 | |
6054 | if (!target_is_async_p ()) | |
6055 | { | |
934b9bac | 6056 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6057 | /* If the user hit C-c before this packet, or between packets, |
6058 | pretend that it was hit right here. */ | |
522002f9 | 6059 | if (check_quit_flag ()) |
74531fed | 6060 | { |
522002f9 | 6061 | clear_quit_flag (); |
934b9bac | 6062 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6063 | } |
6064 | } | |
6065 | ||
6066 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6067 | _never_ wait for ever -> test on target_is_async_p(). | |
6068 | However, before we do that we need to ensure that the caller | |
6069 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
6070 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
6071 | wait_forever_enabled_p, &is_notif); | |
6072 | ||
5e1b953b SDJ |
6073 | if (!target_is_async_p ()) |
6074 | signal (SIGINT, ofunc); | |
6075 | ||
722247f1 YQ |
6076 | /* GDB gets a notification. Return to core as this event is |
6077 | not interesting. */ | |
6078 | if (ret != -1 && is_notif) | |
6079 | return minus_one_ptid; | |
74531fed PA |
6080 | } |
6081 | ||
6082 | buf = rs->buf; | |
6083 | ||
ee154bee | 6084 | rs->remote_stopped_by_watchpoint_p = 0; |
74531fed PA |
6085 | |
6086 | /* We got something. */ | |
6087 | rs->waiting_for_stop_reply = 0; | |
6088 | ||
3a29589a DJ |
6089 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6090 | an 'F' or 'O' packet. */ | |
6091 | if (buf[0] != 'F' && buf[0] != 'O') | |
6092 | rs->ctrlc_pending_p = 0; | |
6093 | ||
74531fed PA |
6094 | switch (buf[0]) |
6095 | { | |
6096 | case 'E': /* Error of some sort. */ | |
6097 | /* We're out of sync with the target now. Did it continue or | |
6098 | not? Not is more likely, so report a stop. */ | |
6099 | warning (_("Remote failure reply: %s"), buf); | |
6100 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6101 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6102 | break; |
6103 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6104 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6105 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6106 | break; |
6107 | case 'T': case 'S': case 'X': case 'W': | |
6108 | { | |
722247f1 YQ |
6109 | struct stop_reply *stop_reply |
6110 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6111 | rs->buf); | |
74531fed | 6112 | |
74531fed | 6113 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6114 | break; |
6115 | } | |
6116 | case 'O': /* Console output. */ | |
6117 | remote_console_output (buf + 1); | |
e24a49d8 | 6118 | |
c8e38a49 PA |
6119 | /* The target didn't really stop; keep waiting. */ |
6120 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6121 | |
c8e38a49 PA |
6122 | break; |
6123 | case '\0': | |
b73be471 | 6124 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6125 | { |
6126 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6127 | remote system doesn't support it. */ | |
6128 | target_terminal_ours_for_output (); | |
6129 | printf_filtered | |
6130 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6131 | gdb_signal_to_name (rs->last_sent_signal)); |
6132 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6133 | target_terminal_inferior (); |
6134 | ||
280ceea3 | 6135 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6136 | putpkt ((char *) buf); |
6137 | ||
6138 | /* We just told the target to resume, so a stop reply is in | |
6139 | order. */ | |
e24a49d8 | 6140 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6141 | break; |
43ff13b4 | 6142 | } |
c8e38a49 PA |
6143 | /* else fallthrough */ |
6144 | default: | |
6145 | warning (_("Invalid remote reply: %s"), buf); | |
6146 | /* Keep waiting. */ | |
6147 | rs->waiting_for_stop_reply = 1; | |
6148 | break; | |
43ff13b4 | 6149 | } |
c8e38a49 | 6150 | |
c8e38a49 | 6151 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6152 | { |
6153 | /* Nothing interesting happened. If we're doing a non-blocking | |
6154 | poll, we're done. Otherwise, go back to waiting. */ | |
6155 | if (options & TARGET_WNOHANG) | |
6156 | return minus_one_ptid; | |
6157 | else | |
6158 | goto again; | |
6159 | } | |
74531fed PA |
6160 | else if (status->kind != TARGET_WAITKIND_EXITED |
6161 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6162 | { |
6163 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6164 | record_currthread (rs, event_ptid); |
82f73884 PA |
6165 | else |
6166 | event_ptid = inferior_ptid; | |
43ff13b4 | 6167 | } |
74531fed PA |
6168 | else |
6169 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6170 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6171 | |
82f73884 | 6172 | return event_ptid; |
43ff13b4 JM |
6173 | } |
6174 | ||
74531fed PA |
6175 | /* Wait until the remote machine stops, then return, storing status in |
6176 | STATUS just as `wait' would. */ | |
6177 | ||
c8e38a49 | 6178 | static ptid_t |
117de6a9 | 6179 | remote_wait (struct target_ops *ops, |
47608cb1 | 6180 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6181 | { |
6182 | ptid_t event_ptid; | |
6183 | ||
74531fed | 6184 | if (non_stop) |
47608cb1 | 6185 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6186 | else |
47608cb1 | 6187 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6188 | |
74531fed | 6189 | if (target_can_async_p ()) |
c8e38a49 | 6190 | { |
74531fed PA |
6191 | /* If there are are events left in the queue tell the event loop |
6192 | to return here. */ | |
722247f1 | 6193 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6194 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6195 | } |
c8e38a49 PA |
6196 | |
6197 | return event_ptid; | |
6198 | } | |
6199 | ||
74ca34ce | 6200 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6201 | |
b96ec7ac | 6202 | static int |
56be3814 | 6203 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6204 | { |
6205 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6206 | char *buf, *p; |
b96ec7ac AC |
6207 | char regp[MAX_REGISTER_SIZE]; |
6208 | int i; | |
6209 | ||
74ca34ce DJ |
6210 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
6211 | return 0; | |
6212 | ||
6213 | if (reg->pnum == -1) | |
6214 | return 0; | |
6215 | ||
2e9f7625 | 6216 | p = rs->buf; |
fcad0fa4 | 6217 | *p++ = 'p'; |
74ca34ce | 6218 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6219 | *p++ = '\0'; |
1f4437a4 MS |
6220 | putpkt (rs->buf); |
6221 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6222 | |
2e9f7625 DJ |
6223 | buf = rs->buf; |
6224 | ||
74ca34ce DJ |
6225 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6226 | { | |
6227 | case PACKET_OK: | |
6228 | break; | |
6229 | case PACKET_UNKNOWN: | |
6230 | return 0; | |
6231 | case PACKET_ERROR: | |
27a9c0bf MS |
6232 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6233 | gdbarch_register_name (get_regcache_arch (regcache), | |
6234 | reg->regnum), | |
6235 | buf); | |
74ca34ce | 6236 | } |
3f9a994c JB |
6237 | |
6238 | /* If this register is unfetchable, tell the regcache. */ | |
6239 | if (buf[0] == 'x') | |
8480adf2 | 6240 | { |
56be3814 | 6241 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6242 | return 1; |
b96ec7ac | 6243 | } |
b96ec7ac | 6244 | |
3f9a994c JB |
6245 | /* Otherwise, parse and supply the value. */ |
6246 | p = buf; | |
6247 | i = 0; | |
6248 | while (p[0] != 0) | |
6249 | { | |
6250 | if (p[1] == 0) | |
74ca34ce | 6251 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6252 | |
6253 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6254 | p += 2; | |
6255 | } | |
56be3814 | 6256 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6257 | return 1; |
b96ec7ac AC |
6258 | } |
6259 | ||
74ca34ce DJ |
6260 | /* Fetch the registers included in the target's 'g' packet. */ |
6261 | ||
29709017 DJ |
6262 | static int |
6263 | send_g_packet (void) | |
c906108c | 6264 | { |
d01949b6 | 6265 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6266 | int buf_len; |
c906108c | 6267 | |
bba74b36 | 6268 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6269 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6270 | |
29709017 DJ |
6271 | /* We can get out of synch in various cases. If the first character |
6272 | in the buffer is not a hex character, assume that has happened | |
6273 | and try to fetch another packet to read. */ | |
6274 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6275 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6276 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6277 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6278 | { | |
6279 | if (remote_debug) | |
6280 | fprintf_unfiltered (gdb_stdlog, | |
6281 | "Bad register packet; fetching a new packet\n"); | |
6282 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6283 | } | |
6284 | ||
74ca34ce DJ |
6285 | buf_len = strlen (rs->buf); |
6286 | ||
6287 | /* Sanity check the received packet. */ | |
6288 | if (buf_len % 2 != 0) | |
6289 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6290 | |
6291 | return buf_len / 2; | |
6292 | } | |
6293 | ||
6294 | static void | |
56be3814 | 6295 | process_g_packet (struct regcache *regcache) |
29709017 | 6296 | { |
4a22f64d | 6297 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6298 | struct remote_state *rs = get_remote_state (); |
6299 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6300 | int i, buf_len; | |
6301 | char *p; | |
6302 | char *regs; | |
6303 | ||
6304 | buf_len = strlen (rs->buf); | |
6305 | ||
6306 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6307 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6308 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6309 | ||
6310 | /* Save the size of the packet sent to us by the target. It is used | |
6311 | as a heuristic when determining the max size of packets that the | |
6312 | target can safely receive. */ | |
6313 | if (rsa->actual_register_packet_size == 0) | |
6314 | rsa->actual_register_packet_size = buf_len; | |
6315 | ||
6316 | /* If this is smaller than we guessed the 'g' packet would be, | |
6317 | update our records. A 'g' reply that doesn't include a register's | |
6318 | value implies either that the register is not available, or that | |
6319 | the 'p' packet must be used. */ | |
6320 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6321 | { |
74ca34ce DJ |
6322 | rsa->sizeof_g_packet = buf_len / 2; |
6323 | ||
4a22f64d | 6324 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6325 | { |
74ca34ce DJ |
6326 | if (rsa->regs[i].pnum == -1) |
6327 | continue; | |
6328 | ||
6329 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6330 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6331 | else |
74ca34ce | 6332 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6333 | } |
74ca34ce | 6334 | } |
b323314b | 6335 | |
74ca34ce | 6336 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6337 | |
6338 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6339 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6340 | |
c906108c SS |
6341 | /* Reply describes registers byte by byte, each byte encoded as two |
6342 | hex characters. Suck them all up, then supply them to the | |
6343 | register cacheing/storage mechanism. */ | |
6344 | ||
74ca34ce | 6345 | p = rs->buf; |
ea9c271d | 6346 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6347 | { |
74ca34ce DJ |
6348 | if (p[0] == 0 || p[1] == 0) |
6349 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6350 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6351 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6352 | |
c906108c | 6353 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6354 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6355 | else |
6356 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6357 | p += 2; | |
6358 | } | |
6359 | ||
a744cf53 MS |
6360 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6361 | { | |
6362 | struct packet_reg *r = &rsa->regs[i]; | |
6363 | ||
6364 | if (r->in_g_packet) | |
6365 | { | |
6366 | if (r->offset * 2 >= strlen (rs->buf)) | |
6367 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6368 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6369 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6370 | else if (rs->buf[r->offset * 2] == 'x') |
6371 | { | |
6372 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6373 | /* The register isn't available, mark it as such (at | |
6374 | the same time setting the value to zero). */ | |
6375 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6376 | } | |
6377 | else | |
6378 | regcache_raw_supply (regcache, r->regnum, | |
6379 | regs + r->offset); | |
6380 | } | |
6381 | } | |
c906108c SS |
6382 | } |
6383 | ||
29709017 | 6384 | static void |
56be3814 | 6385 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6386 | { |
6387 | send_g_packet (); | |
56be3814 | 6388 | process_g_packet (regcache); |
29709017 DJ |
6389 | } |
6390 | ||
e6e4e701 PA |
6391 | /* Make the remote selected traceframe match GDB's selected |
6392 | traceframe. */ | |
6393 | ||
6394 | static void | |
6395 | set_remote_traceframe (void) | |
6396 | { | |
6397 | int newnum; | |
262e1174 | 6398 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6399 | |
262e1174 | 6400 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6401 | return; |
6402 | ||
6403 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6404 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6405 | |
6406 | newnum = target_trace_find (tfind_number, | |
6407 | get_traceframe_number (), 0, 0, NULL); | |
6408 | ||
6409 | /* Should not happen. If it does, all bets are off. */ | |
6410 | if (newnum != get_traceframe_number ()) | |
6411 | warning (_("could not set remote traceframe")); | |
6412 | } | |
6413 | ||
74ca34ce | 6414 | static void |
28439f5e PA |
6415 | remote_fetch_registers (struct target_ops *ops, |
6416 | struct regcache *regcache, int regnum) | |
74ca34ce | 6417 | { |
74ca34ce DJ |
6418 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6419 | int i; | |
6420 | ||
e6e4e701 | 6421 | set_remote_traceframe (); |
79d7f229 | 6422 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6423 | |
6424 | if (regnum >= 0) | |
6425 | { | |
6426 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6427 | |
74ca34ce DJ |
6428 | gdb_assert (reg != NULL); |
6429 | ||
6430 | /* If this register might be in the 'g' packet, try that first - | |
6431 | we are likely to read more than one register. If this is the | |
6432 | first 'g' packet, we might be overly optimistic about its | |
6433 | contents, so fall back to 'p'. */ | |
6434 | if (reg->in_g_packet) | |
6435 | { | |
56be3814 | 6436 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6437 | if (reg->in_g_packet) |
6438 | return; | |
6439 | } | |
6440 | ||
56be3814 | 6441 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6442 | return; |
6443 | ||
6444 | /* This register is not available. */ | |
56be3814 | 6445 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6446 | |
6447 | return; | |
6448 | } | |
6449 | ||
56be3814 | 6450 | fetch_registers_using_g (regcache); |
74ca34ce | 6451 | |
4a22f64d | 6452 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6453 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6454 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6455 | { |
6456 | /* This register is not available. */ | |
56be3814 | 6457 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6458 | } |
6459 | } | |
6460 | ||
c906108c SS |
6461 | /* Prepare to store registers. Since we may send them all (using a |
6462 | 'G' request), we have to read out the ones we don't want to change | |
6463 | first. */ | |
6464 | ||
c5aa993b | 6465 | static void |
f32dbf8c | 6466 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6467 | { |
ea9c271d | 6468 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6469 | int i; |
cfd77fa1 | 6470 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6471 | |
c906108c | 6472 | /* Make sure the entire registers array is valid. */ |
444abaca | 6473 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6474 | { |
6475 | case PACKET_DISABLE: | |
6476 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6477 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6478 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6479 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6480 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6481 | break; |
6482 | case PACKET_ENABLE: | |
6483 | break; | |
6484 | } | |
6485 | } | |
6486 | ||
ad10f812 | 6487 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6488 | packet was not recognized. */ |
5a2468f5 JM |
6489 | |
6490 | static int | |
1f4437a4 MS |
6491 | store_register_using_P (const struct regcache *regcache, |
6492 | struct packet_reg *reg) | |
5a2468f5 | 6493 | { |
4a22f64d | 6494 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6495 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6496 | /* Try storing a single register. */ |
6d820c5c | 6497 | char *buf = rs->buf; |
cfd77fa1 | 6498 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6499 | char *p; |
5a2468f5 | 6500 | |
74ca34ce DJ |
6501 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6502 | return 0; | |
6503 | ||
6504 | if (reg->pnum == -1) | |
6505 | return 0; | |
6506 | ||
ea9c271d | 6507 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6508 | p = buf + strlen (buf); |
56be3814 | 6509 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6510 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6511 | putpkt (rs->buf); |
6512 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6513 | |
74ca34ce DJ |
6514 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6515 | { | |
6516 | case PACKET_OK: | |
6517 | return 1; | |
6518 | case PACKET_ERROR: | |
27a9c0bf MS |
6519 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6520 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6521 | case PACKET_UNKNOWN: |
6522 | return 0; | |
6523 | default: | |
6524 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6525 | } | |
c906108c SS |
6526 | } |
6527 | ||
23860348 MS |
6528 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6529 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6530 | |
6531 | static void | |
56be3814 | 6532 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6533 | { |
d01949b6 | 6534 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6535 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6536 | gdb_byte *regs; |
c906108c SS |
6537 | char *p; |
6538 | ||
193cb69f AC |
6539 | /* Extract all the registers in the regcache copying them into a |
6540 | local buffer. */ | |
6541 | { | |
b323314b | 6542 | int i; |
a744cf53 | 6543 | |
ea9c271d DJ |
6544 | regs = alloca (rsa->sizeof_g_packet); |
6545 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6546 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6547 | { |
ea9c271d | 6548 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6549 | |
b323314b | 6550 | if (r->in_g_packet) |
56be3814 | 6551 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6552 | } |
6553 | } | |
c906108c SS |
6554 | |
6555 | /* Command describes registers byte by byte, | |
6556 | each byte encoded as two hex characters. */ | |
6d820c5c | 6557 | p = rs->buf; |
193cb69f | 6558 | *p++ = 'G'; |
74ca34ce DJ |
6559 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6560 | updated. */ | |
6561 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6562 | putpkt (rs->buf); |
6563 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6564 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6565 | error (_("Could not write registers; remote failure reply '%s'"), |
6566 | rs->buf); | |
c906108c | 6567 | } |
74ca34ce DJ |
6568 | |
6569 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6570 | of the register cache buffer. FIXME: ignores errors. */ | |
6571 | ||
6572 | static void | |
28439f5e PA |
6573 | remote_store_registers (struct target_ops *ops, |
6574 | struct regcache *regcache, int regnum) | |
74ca34ce | 6575 | { |
74ca34ce DJ |
6576 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6577 | int i; | |
6578 | ||
e6e4e701 | 6579 | set_remote_traceframe (); |
79d7f229 | 6580 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6581 | |
6582 | if (regnum >= 0) | |
6583 | { | |
6584 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6585 | |
74ca34ce DJ |
6586 | gdb_assert (reg != NULL); |
6587 | ||
6588 | /* Always prefer to store registers using the 'P' packet if | |
6589 | possible; we often change only a small number of registers. | |
6590 | Sometimes we change a larger number; we'd need help from a | |
6591 | higher layer to know to use 'G'. */ | |
56be3814 | 6592 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6593 | return; |
6594 | ||
6595 | /* For now, don't complain if we have no way to write the | |
6596 | register. GDB loses track of unavailable registers too | |
6597 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6598 | any way to read the register, either... */ |
74ca34ce DJ |
6599 | if (!reg->in_g_packet) |
6600 | return; | |
6601 | ||
56be3814 | 6602 | store_registers_using_G (regcache); |
74ca34ce DJ |
6603 | return; |
6604 | } | |
6605 | ||
56be3814 | 6606 | store_registers_using_G (regcache); |
74ca34ce | 6607 | |
4a22f64d | 6608 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6609 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6610 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6611 | /* See above for why we do not issue an error here. */ |
6612 | continue; | |
6613 | } | |
c906108c SS |
6614 | \f |
6615 | ||
6616 | /* Return the number of hex digits in num. */ | |
6617 | ||
6618 | static int | |
fba45db2 | 6619 | hexnumlen (ULONGEST num) |
c906108c SS |
6620 | { |
6621 | int i; | |
6622 | ||
6623 | for (i = 0; num != 0; i++) | |
6624 | num >>= 4; | |
6625 | ||
6626 | return max (i, 1); | |
6627 | } | |
6628 | ||
2df3850c | 6629 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6630 | |
6631 | static int | |
fba45db2 | 6632 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6633 | { |
c906108c | 6634 | int len = hexnumlen (num); |
a744cf53 | 6635 | |
2df3850c JM |
6636 | return hexnumnstr (buf, num, len); |
6637 | } | |
6638 | ||
c906108c | 6639 | |
2df3850c | 6640 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6641 | |
2df3850c | 6642 | static int |
fba45db2 | 6643 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6644 | { |
6645 | int i; | |
6646 | ||
6647 | buf[width] = '\0'; | |
6648 | ||
6649 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6650 | { |
c5aa993b | 6651 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6652 | num >>= 4; |
6653 | } | |
6654 | ||
2df3850c | 6655 | return width; |
c906108c SS |
6656 | } |
6657 | ||
23860348 | 6658 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6659 | |
6660 | static CORE_ADDR | |
fba45db2 | 6661 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6662 | { |
883b9c6c | 6663 | unsigned int address_size = remote_address_size; |
a744cf53 | 6664 | |
911c95a5 UW |
6665 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6666 | if (!address_size) | |
f5656ead | 6667 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6668 | |
6669 | if (address_size > 0 | |
6670 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6671 | { |
6672 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6673 | in a ULONGEST variable. */ |
c906108c | 6674 | ULONGEST mask = 1; |
a744cf53 | 6675 | |
911c95a5 | 6676 | mask = (mask << address_size) - 1; |
c906108c SS |
6677 | addr &= mask; |
6678 | } | |
6679 | return addr; | |
6680 | } | |
6681 | ||
a31ea83d DJ |
6682 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6683 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6684 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6685 | (which may be more than *OUT_LEN due to escape characters). The | |
6686 | total number of bytes in the output buffer will be at most | |
6687 | OUT_MAXLEN. */ | |
6688 | ||
6689 | static int | |
6690 | remote_escape_output (const gdb_byte *buffer, int len, | |
6691 | gdb_byte *out_buf, int *out_len, | |
6692 | int out_maxlen) | |
6693 | { | |
6694 | int input_index, output_index; | |
6695 | ||
6696 | output_index = 0; | |
6697 | for (input_index = 0; input_index < len; input_index++) | |
6698 | { | |
6699 | gdb_byte b = buffer[input_index]; | |
6700 | ||
6701 | if (b == '$' || b == '#' || b == '}') | |
6702 | { | |
6703 | /* These must be escaped. */ | |
6704 | if (output_index + 2 > out_maxlen) | |
6705 | break; | |
6706 | out_buf[output_index++] = '}'; | |
6707 | out_buf[output_index++] = b ^ 0x20; | |
6708 | } | |
6709 | else | |
6710 | { | |
6711 | if (output_index + 1 > out_maxlen) | |
6712 | break; | |
6713 | out_buf[output_index++] = b; | |
6714 | } | |
6715 | } | |
6716 | ||
6717 | *out_len = input_index; | |
6718 | return output_index; | |
6719 | } | |
6720 | ||
0876f84a DJ |
6721 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6722 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6723 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6724 | ||
6725 | This function reverses remote_escape_output. It allows more | |
6726 | escaped characters than that function does, in particular because | |
6727 | '*' must be escaped to avoid the run-length encoding processing | |
6728 | in reading packets. */ | |
6729 | ||
6730 | static int | |
6731 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6732 | gdb_byte *out_buf, int out_maxlen) | |
6733 | { | |
6734 | int input_index, output_index; | |
6735 | int escaped; | |
6736 | ||
6737 | output_index = 0; | |
6738 | escaped = 0; | |
6739 | for (input_index = 0; input_index < len; input_index++) | |
6740 | { | |
6741 | gdb_byte b = buffer[input_index]; | |
6742 | ||
6743 | if (output_index + 1 > out_maxlen) | |
6744 | { | |
6745 | warning (_("Received too much data from remote target;" | |
6746 | " ignoring overflow.")); | |
6747 | return output_index; | |
6748 | } | |
6749 | ||
6750 | if (escaped) | |
6751 | { | |
6752 | out_buf[output_index++] = b ^ 0x20; | |
6753 | escaped = 0; | |
6754 | } | |
6755 | else if (b == '}') | |
6756 | escaped = 1; | |
6757 | else | |
6758 | out_buf[output_index++] = b; | |
6759 | } | |
6760 | ||
6761 | if (escaped) | |
6762 | error (_("Unmatched escape character in target response.")); | |
6763 | ||
6764 | return output_index; | |
6765 | } | |
6766 | ||
c906108c SS |
6767 | /* Determine whether the remote target supports binary downloading. |
6768 | This is accomplished by sending a no-op memory write of zero length | |
6769 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6770 | the whole packet, since many stubs strip the eighth bit and |
6771 | subsequently compute a wrong checksum, which causes real havoc with | |
6772 | remote_write_bytes. | |
7a292a7a | 6773 | |
96baa820 | 6774 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6775 | clean. In cases like this, the user should clear "remote |
23860348 | 6776 | X-packet". */ |
96baa820 | 6777 | |
c906108c | 6778 | static void |
fba45db2 | 6779 | check_binary_download (CORE_ADDR addr) |
c906108c | 6780 | { |
d01949b6 | 6781 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6782 | |
444abaca | 6783 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6784 | { |
96baa820 JM |
6785 | case PACKET_DISABLE: |
6786 | break; | |
6787 | case PACKET_ENABLE: | |
6788 | break; | |
6789 | case PACKET_SUPPORT_UNKNOWN: | |
6790 | { | |
96baa820 | 6791 | char *p; |
802188a7 | 6792 | |
2e9f7625 | 6793 | p = rs->buf; |
96baa820 JM |
6794 | *p++ = 'X'; |
6795 | p += hexnumstr (p, (ULONGEST) addr); | |
6796 | *p++ = ','; | |
6797 | p += hexnumstr (p, (ULONGEST) 0); | |
6798 | *p++ = ':'; | |
6799 | *p = '\0'; | |
802188a7 | 6800 | |
2e9f7625 | 6801 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6802 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6803 | |
2e9f7625 | 6804 | if (rs->buf[0] == '\0') |
96baa820 JM |
6805 | { |
6806 | if (remote_debug) | |
6807 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6808 | "binary downloading NOT " |
6809 | "supported by target\n"); | |
444abaca | 6810 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6811 | } |
6812 | else | |
6813 | { | |
6814 | if (remote_debug) | |
6815 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6816 | "binary downloading supported by target\n"); |
444abaca | 6817 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6818 | } |
6819 | break; | |
6820 | } | |
c906108c SS |
6821 | } |
6822 | } | |
6823 | ||
6824 | /* Write memory data directly to the remote machine. | |
6825 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6826 | HEADER is the starting part of the packet. |
c906108c SS |
6827 | MEMADDR is the address in the remote memory space. |
6828 | MYADDR is the address of the buffer in our space. | |
6829 | LEN is the number of bytes. | |
a76d924d DJ |
6830 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6831 | should send data as binary ('X'), or hex-encoded ('M'). | |
6832 | ||
6833 | The function creates packet of the form | |
6834 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6835 | ||
6836 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6837 | ||
6838 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6839 | are omitted. | |
6840 | ||
00d84524 PA |
6841 | Returns the number of bytes transferred, or a negative value (an |
6842 | 'enum target_xfer_error' value) for error. Only transfer a single | |
6843 | packet. */ | |
c906108c | 6844 | |
00d84524 | 6845 | static LONGEST |
a76d924d | 6846 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
5d6df423 | 6847 | const gdb_byte *myaddr, ULONGEST len, |
a76d924d | 6848 | char packet_format, int use_length) |
c906108c | 6849 | { |
6d820c5c | 6850 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6851 | char *p; |
a76d924d DJ |
6852 | char *plen = NULL; |
6853 | int plenlen = 0; | |
917317f4 JM |
6854 | int todo; |
6855 | int nr_bytes; | |
a257b5bb | 6856 | int payload_size; |
6765f3e5 | 6857 | int payload_length; |
a76d924d DJ |
6858 | int header_length; |
6859 | ||
6860 | if (packet_format != 'X' && packet_format != 'M') | |
6861 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6862 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6863 | |
5d6df423 | 6864 | if (len == 0) |
b2182ed2 DJ |
6865 | return 0; |
6866 | ||
3de11b2e | 6867 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6868 | |
6d820c5c DJ |
6869 | /* The packet buffer will be large enough for the payload; |
6870 | get_memory_packet_size ensures this. */ | |
a76d924d | 6871 | rs->buf[0] = '\0'; |
c906108c | 6872 | |
a257b5bb | 6873 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6874 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6875 | ||
a76d924d DJ |
6876 | payload_size -= strlen ("$,:#NN"); |
6877 | if (!use_length) | |
0df8b418 | 6878 | /* The comma won't be used. */ |
a76d924d DJ |
6879 | payload_size += 1; |
6880 | header_length = strlen (header); | |
6881 | payload_size -= header_length; | |
3de11b2e | 6882 | payload_size -= hexnumlen (memaddr); |
c906108c | 6883 | |
a76d924d | 6884 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6885 | |
a76d924d DJ |
6886 | strcat (rs->buf, header); |
6887 | p = rs->buf + strlen (header); | |
6888 | ||
6889 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6890 | if (packet_format == 'X') | |
c906108c | 6891 | { |
23860348 | 6892 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6893 | todo = min (len, payload_size); |
a76d924d DJ |
6894 | if (use_length) |
6895 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6896 | todo = min (todo, payload_size); |
a76d924d DJ |
6897 | } |
6898 | else | |
6899 | { | |
23860348 | 6900 | /* Num bytes that will fit. */ |
a257b5bb | 6901 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6902 | if (use_length) |
6903 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6904 | todo = min (todo, payload_size / 2); |
917317f4 | 6905 | } |
a76d924d | 6906 | |
3de11b2e NS |
6907 | if (todo <= 0) |
6908 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6909 | _("minimum packet size too small to write data")); |
802188a7 | 6910 | |
6765f3e5 DJ |
6911 | /* If we already need another packet, then try to align the end |
6912 | of this packet to a useful boundary. */ | |
6913 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6914 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6915 | ||
a257b5bb | 6916 | /* Append "<memaddr>". */ |
917317f4 JM |
6917 | memaddr = remote_address_masked (memaddr); |
6918 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6919 | |
a76d924d DJ |
6920 | if (use_length) |
6921 | { | |
6922 | /* Append ",". */ | |
6923 | *p++ = ','; | |
802188a7 | 6924 | |
a76d924d DJ |
6925 | /* Append <len>. Retain the location/size of <len>. It may need to |
6926 | be adjusted once the packet body has been created. */ | |
6927 | plen = p; | |
6928 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6929 | p += plenlen; | |
6930 | } | |
a257b5bb AC |
6931 | |
6932 | /* Append ":". */ | |
917317f4 JM |
6933 | *p++ = ':'; |
6934 | *p = '\0'; | |
802188a7 | 6935 | |
a257b5bb | 6936 | /* Append the packet body. */ |
a76d924d | 6937 | if (packet_format == 'X') |
917317f4 | 6938 | { |
917317f4 JM |
6939 | /* Binary mode. Send target system values byte by byte, in |
6940 | increasing byte addresses. Only escape certain critical | |
6941 | characters. */ | |
bc20a4af PA |
6942 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6943 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6944 | |
6945 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6946 | a second try to keep the end of the packet aligned. Don't do |
6947 | this if the packet is tiny. */ | |
6948 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6949 | { |
6950 | int new_nr_bytes; | |
6951 | ||
6952 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6953 | - memaddr); | |
6954 | if (new_nr_bytes != nr_bytes) | |
6955 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6956 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6957 | payload_size); |
6958 | } | |
6959 | ||
6960 | p += payload_length; | |
a76d924d | 6961 | if (use_length && nr_bytes < todo) |
c906108c | 6962 | { |
802188a7 | 6963 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6964 | and we have actually sent fewer bytes than planned. |
6965 | Fix-up the length field of the packet. Use the same | |
6966 | number of characters as before. */ | |
917317f4 JM |
6967 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6968 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6969 | } |
a76d924d DJ |
6970 | } |
6971 | else | |
6972 | { | |
917317f4 JM |
6973 | /* Normal mode: Send target system values byte by byte, in |
6974 | increasing byte addresses. Each byte is encoded as a two hex | |
6975 | value. */ | |
2644f393 | 6976 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6977 | p += 2 * nr_bytes; |
c906108c | 6978 | } |
802188a7 | 6979 | |
2e9f7625 | 6980 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6981 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6982 | |
2e9f7625 | 6983 | if (rs->buf[0] == 'E') |
00d84524 | 6984 | return TARGET_XFER_E_IO; |
802188a7 | 6985 | |
23860348 MS |
6986 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6987 | fewer bytes than we'd planned. */ | |
917317f4 | 6988 | return nr_bytes; |
c906108c SS |
6989 | } |
6990 | ||
a76d924d DJ |
6991 | /* Write memory data directly to the remote machine. |
6992 | This does not inform the data cache; the data cache uses this. | |
6993 | MEMADDR is the address in the remote memory space. | |
6994 | MYADDR is the address of the buffer in our space. | |
6995 | LEN is the number of bytes. | |
6996 | ||
00d84524 PA |
6997 | Returns number of bytes transferred, or a negative value (an 'enum |
6998 | target_xfer_error' value) for error. Only transfer a single | |
6999 | packet. */ | |
a76d924d | 7000 | |
00d84524 | 7001 | static LONGEST |
5d6df423 | 7002 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len) |
a76d924d DJ |
7003 | { |
7004 | char *packet_format = 0; | |
7005 | ||
7006 | /* Check whether the target supports binary download. */ | |
7007 | check_binary_download (memaddr); | |
7008 | ||
7009 | switch (remote_protocol_packets[PACKET_X].support) | |
7010 | { | |
7011 | case PACKET_ENABLE: | |
7012 | packet_format = "X"; | |
7013 | break; | |
7014 | case PACKET_DISABLE: | |
7015 | packet_format = "M"; | |
7016 | break; | |
7017 | case PACKET_SUPPORT_UNKNOWN: | |
7018 | internal_error (__FILE__, __LINE__, | |
7019 | _("remote_write_bytes: bad internal state")); | |
7020 | default: | |
7021 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7022 | } | |
7023 | ||
7024 | return remote_write_bytes_aux (packet_format, | |
7025 | memaddr, myaddr, len, packet_format[0], 1); | |
7026 | } | |
7027 | ||
c906108c SS |
7028 | /* Read memory data directly from the remote machine. |
7029 | This does not use the data cache; the data cache uses this. | |
7030 | MEMADDR is the address in the remote memory space. | |
7031 | MYADDR is the address of the buffer in our space. | |
7032 | LEN is the number of bytes. | |
7033 | ||
00d84524 PA |
7034 | Returns number of bytes transferred, or a negative value (an 'enum |
7035 | target_xfer_error' value) for error. */ | |
c906108c | 7036 | |
00d84524 | 7037 | static LONGEST |
6b6aa828 | 7038 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len) |
c906108c | 7039 | { |
6d820c5c | 7040 | struct remote_state *rs = get_remote_state (); |
23860348 | 7041 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
7042 | char *p; |
7043 | int todo; | |
7044 | int i; | |
c906108c | 7045 | |
6b6aa828 | 7046 | if (len == 0) |
b2182ed2 DJ |
7047 | return 0; |
7048 | ||
11cf8741 | 7049 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
7050 | /* The packet buffer will be large enough for the payload; |
7051 | get_memory_packet_size ensures this. */ | |
c906108c | 7052 | |
f7605bc2 PA |
7053 | /* Number if bytes that will fit. */ |
7054 | todo = min (len, max_buf_size / 2); | |
c906108c | 7055 | |
f7605bc2 PA |
7056 | /* Construct "m"<memaddr>","<len>". */ |
7057 | memaddr = remote_address_masked (memaddr); | |
7058 | p = rs->buf; | |
7059 | *p++ = 'm'; | |
7060 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7061 | *p++ = ','; | |
7062 | p += hexnumstr (p, (ULONGEST) todo); | |
7063 | *p = '\0'; | |
7064 | putpkt (rs->buf); | |
7065 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7066 | if (rs->buf[0] == 'E' | |
7067 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7068 | && rs->buf[3] == '\0') | |
00d84524 | 7069 | return TARGET_XFER_E_IO; |
f7605bc2 PA |
7070 | /* Reply describes memory byte by byte, each byte encoded as two hex |
7071 | characters. */ | |
7072 | p = rs->buf; | |
7073 | i = hex2bin (p, myaddr, todo); | |
7074 | /* Return what we have. Let higher layers handle partial reads. */ | |
7075 | return i; | |
c906108c | 7076 | } |
74531fed | 7077 | |
c906108c | 7078 | \f |
c906108c | 7079 | |
a76d924d DJ |
7080 | /* Sends a packet with content determined by the printf format string |
7081 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7082 | whether the packet was a success, a failure, or unknown. */ | |
7083 | ||
2c0b251b | 7084 | static enum packet_result |
a76d924d DJ |
7085 | remote_send_printf (const char *format, ...) |
7086 | { | |
7087 | struct remote_state *rs = get_remote_state (); | |
7088 | int max_size = get_remote_packet_size (); | |
a76d924d | 7089 | va_list ap; |
a744cf53 | 7090 | |
a76d924d DJ |
7091 | va_start (ap, format); |
7092 | ||
7093 | rs->buf[0] = '\0'; | |
7094 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7095 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7096 | |
7097 | if (putpkt (rs->buf) < 0) | |
7098 | error (_("Communication problem with target.")); | |
7099 | ||
7100 | rs->buf[0] = '\0'; | |
7101 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7102 | ||
7103 | return packet_check_result (rs->buf); | |
7104 | } | |
7105 | ||
7106 | static void | |
7107 | restore_remote_timeout (void *p) | |
7108 | { | |
7109 | int value = *(int *)p; | |
a744cf53 | 7110 | |
a76d924d DJ |
7111 | remote_timeout = value; |
7112 | } | |
7113 | ||
7114 | /* Flash writing can take quite some time. We'll set | |
7115 | effectively infinite timeout for flash operations. | |
7116 | In future, we'll need to decide on a better approach. */ | |
7117 | static const int remote_flash_timeout = 1000; | |
7118 | ||
7119 | static void | |
7120 | remote_flash_erase (struct target_ops *ops, | |
7121 | ULONGEST address, LONGEST length) | |
7122 | { | |
f5656ead | 7123 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7124 | int saved_remote_timeout = remote_timeout; |
7125 | enum packet_result ret; | |
a76d924d DJ |
7126 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7127 | &saved_remote_timeout); | |
a744cf53 | 7128 | |
a76d924d DJ |
7129 | remote_timeout = remote_flash_timeout; |
7130 | ||
7131 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7132 | phex (address, addr_size), |
a76d924d DJ |
7133 | phex (length, 4)); |
7134 | switch (ret) | |
7135 | { | |
7136 | case PACKET_UNKNOWN: | |
7137 | error (_("Remote target does not support flash erase")); | |
7138 | case PACKET_ERROR: | |
7139 | error (_("Error erasing flash with vFlashErase packet")); | |
7140 | default: | |
7141 | break; | |
7142 | } | |
7143 | ||
7144 | do_cleanups (back_to); | |
7145 | } | |
7146 | ||
7147 | static LONGEST | |
7148 | remote_flash_write (struct target_ops *ops, | |
7149 | ULONGEST address, LONGEST length, | |
7150 | const gdb_byte *data) | |
7151 | { | |
7152 | int saved_remote_timeout = remote_timeout; | |
00d84524 | 7153 | LONGEST ret; |
a76d924d DJ |
7154 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7155 | &saved_remote_timeout); | |
7156 | ||
7157 | remote_timeout = remote_flash_timeout; | |
7158 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
7159 | do_cleanups (back_to); | |
7160 | ||
7161 | return ret; | |
7162 | } | |
7163 | ||
7164 | static void | |
7165 | remote_flash_done (struct target_ops *ops) | |
7166 | { | |
7167 | int saved_remote_timeout = remote_timeout; | |
7168 | int ret; | |
7169 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7170 | &saved_remote_timeout); | |
7171 | ||
7172 | remote_timeout = remote_flash_timeout; | |
7173 | ret = remote_send_printf ("vFlashDone"); | |
7174 | do_cleanups (back_to); | |
7175 | ||
7176 | switch (ret) | |
7177 | { | |
7178 | case PACKET_UNKNOWN: | |
7179 | error (_("Remote target does not support vFlashDone")); | |
7180 | case PACKET_ERROR: | |
7181 | error (_("Error finishing flash operation")); | |
7182 | default: | |
7183 | break; | |
7184 | } | |
7185 | } | |
7186 | ||
c906108c | 7187 | static void |
fba45db2 | 7188 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7189 | { |
7190 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7191 | } | |
7192 | \f | |
7193 | /* Stuff for dealing with the packets which are part of this protocol. | |
7194 | See comment at top of file for details. */ | |
7195 | ||
1927e618 PA |
7196 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7197 | error to higher layers. Called when a serial error is detected. | |
7198 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7199 | the system error message for errno at function entry and final dot |
7200 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7201 | |
7202 | static void | |
7203 | unpush_and_perror (const char *string) | |
7204 | { | |
d6cb50a2 | 7205 | int saved_errno = errno; |
1927e618 PA |
7206 | |
7207 | remote_unpush_target (); | |
d6cb50a2 JK |
7208 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7209 | safe_strerror (saved_errno)); | |
1927e618 PA |
7210 | } |
7211 | ||
0876f84a | 7212 | /* Read a single character from the remote end. */ |
c906108c SS |
7213 | |
7214 | static int | |
fba45db2 | 7215 | readchar (int timeout) |
c906108c SS |
7216 | { |
7217 | int ch; | |
5d93a237 | 7218 | struct remote_state *rs = get_remote_state (); |
c906108c | 7219 | |
5d93a237 | 7220 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7221 | |
2acceee2 | 7222 | if (ch >= 0) |
0876f84a | 7223 | return ch; |
2acceee2 JM |
7224 | |
7225 | switch ((enum serial_rc) ch) | |
c906108c SS |
7226 | { |
7227 | case SERIAL_EOF: | |
78a095c3 | 7228 | remote_unpush_target (); |
598d3636 | 7229 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7230 | /* no return */ |
c906108c | 7231 | case SERIAL_ERROR: |
1927e618 PA |
7232 | unpush_and_perror (_("Remote communication error. " |
7233 | "Target disconnected.")); | |
2acceee2 | 7234 | /* no return */ |
c906108c | 7235 | case SERIAL_TIMEOUT: |
2acceee2 | 7236 | break; |
c906108c | 7237 | } |
2acceee2 | 7238 | return ch; |
c906108c SS |
7239 | } |
7240 | ||
c33e31fd PA |
7241 | /* Wrapper for serial_write that closes the target and throws if |
7242 | writing fails. */ | |
7243 | ||
7244 | static void | |
7245 | remote_serial_write (const char *str, int len) | |
7246 | { | |
5d93a237 TT |
7247 | struct remote_state *rs = get_remote_state (); |
7248 | ||
7249 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7250 | { |
1927e618 PA |
7251 | unpush_and_perror (_("Remote communication error. " |
7252 | "Target disconnected.")); | |
c33e31fd PA |
7253 | } |
7254 | } | |
7255 | ||
6d820c5c DJ |
7256 | /* Send the command in *BUF to the remote machine, and read the reply |
7257 | into *BUF. Report an error if we get an error reply. Resize | |
7258 | *BUF using xrealloc if necessary to hold the result, and update | |
7259 | *SIZEOF_BUF. */ | |
c906108c SS |
7260 | |
7261 | static void | |
6d820c5c DJ |
7262 | remote_send (char **buf, |
7263 | long *sizeof_buf) | |
c906108c | 7264 | { |
6d820c5c | 7265 | putpkt (*buf); |
c2d11a7d | 7266 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7267 | |
6d820c5c DJ |
7268 | if ((*buf)[0] == 'E') |
7269 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7270 | } |
7271 | ||
6e5abd65 PA |
7272 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7273 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7274 | etc. The caller is responsible for releasing the returned | |
7275 | memory. */ | |
7276 | ||
7277 | static char * | |
7278 | escape_buffer (const char *buf, int n) | |
7279 | { | |
7280 | struct cleanup *old_chain; | |
7281 | struct ui_file *stb; | |
7282 | char *str; | |
6e5abd65 PA |
7283 | |
7284 | stb = mem_fileopen (); | |
7285 | old_chain = make_cleanup_ui_file_delete (stb); | |
7286 | ||
7287 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7288 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7289 | do_cleanups (old_chain); |
7290 | return str; | |
7291 | } | |
7292 | ||
c906108c SS |
7293 | /* Display a null-terminated packet on stdout, for debugging, using C |
7294 | string notation. */ | |
7295 | ||
7296 | static void | |
fba45db2 | 7297 | print_packet (char *buf) |
c906108c SS |
7298 | { |
7299 | puts_filtered ("\""); | |
43e526b9 | 7300 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7301 | puts_filtered ("\""); |
7302 | } | |
7303 | ||
7304 | int | |
fba45db2 | 7305 | putpkt (char *buf) |
c906108c SS |
7306 | { |
7307 | return putpkt_binary (buf, strlen (buf)); | |
7308 | } | |
7309 | ||
7310 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7311 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7312 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7313 | and for a possible /0 if we are debugging (remote_debug) and want |
7314 | to print the sent packet as a string. */ | |
c906108c SS |
7315 | |
7316 | static int | |
fba45db2 | 7317 | putpkt_binary (char *buf, int cnt) |
c906108c | 7318 | { |
2d717e4f | 7319 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7320 | int i; |
7321 | unsigned char csum = 0; | |
11cf8741 | 7322 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7323 | |
c906108c SS |
7324 | int ch; |
7325 | int tcount = 0; | |
7326 | char *p; | |
dd61ec5c | 7327 | char *message; |
c906108c | 7328 | |
e24a49d8 PA |
7329 | /* Catch cases like trying to read memory or listing threads while |
7330 | we're waiting for a stop reply. The remote server wouldn't be | |
7331 | ready to handle this request, so we'd hang and timeout. We don't | |
7332 | have to worry about this in synchronous mode, because in that | |
7333 | case it's not possible to issue a command while the target is | |
74531fed PA |
7334 | running. This is not a problem in non-stop mode, because in that |
7335 | case, the stub is always ready to process serial input. */ | |
7336 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7337 | error (_("Cannot execute this command while the target is running.")); |
7338 | ||
2d717e4f DJ |
7339 | /* We're sending out a new packet. Make sure we don't look at a |
7340 | stale cached response. */ | |
7341 | rs->cached_wait_status = 0; | |
7342 | ||
c906108c SS |
7343 | /* Copy the packet into buffer BUF2, encapsulating it |
7344 | and giving it a checksum. */ | |
7345 | ||
c906108c SS |
7346 | p = buf2; |
7347 | *p++ = '$'; | |
7348 | ||
7349 | for (i = 0; i < cnt; i++) | |
7350 | { | |
7351 | csum += buf[i]; | |
7352 | *p++ = buf[i]; | |
7353 | } | |
7354 | *p++ = '#'; | |
7355 | *p++ = tohex ((csum >> 4) & 0xf); | |
7356 | *p++ = tohex (csum & 0xf); | |
7357 | ||
7358 | /* Send it over and over until we get a positive ack. */ | |
7359 | ||
7360 | while (1) | |
7361 | { | |
7362 | int started_error_output = 0; | |
7363 | ||
7364 | if (remote_debug) | |
7365 | { | |
6e5abd65 PA |
7366 | struct cleanup *old_chain; |
7367 | char *str; | |
7368 | ||
c906108c | 7369 | *p = '\0'; |
6e5abd65 PA |
7370 | str = escape_buffer (buf2, p - buf2); |
7371 | old_chain = make_cleanup (xfree, str); | |
7372 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7373 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7374 | do_cleanups (old_chain); |
c906108c | 7375 | } |
c33e31fd | 7376 | remote_serial_write (buf2, p - buf2); |
c906108c | 7377 | |
a6f3e723 SL |
7378 | /* If this is a no acks version of the remote protocol, send the |
7379 | packet and move on. */ | |
7380 | if (rs->noack_mode) | |
7381 | break; | |
7382 | ||
74531fed PA |
7383 | /* Read until either a timeout occurs (-2) or '+' is read. |
7384 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7385 | while (1) |
7386 | { | |
7387 | ch = readchar (remote_timeout); | |
7388 | ||
c5aa993b | 7389 | if (remote_debug) |
c906108c SS |
7390 | { |
7391 | switch (ch) | |
7392 | { | |
7393 | case '+': | |
1216fa2c | 7394 | case '-': |
c906108c SS |
7395 | case SERIAL_TIMEOUT: |
7396 | case '$': | |
74531fed | 7397 | case '%': |
c906108c SS |
7398 | if (started_error_output) |
7399 | { | |
7400 | putchar_unfiltered ('\n'); | |
7401 | started_error_output = 0; | |
7402 | } | |
7403 | } | |
7404 | } | |
7405 | ||
7406 | switch (ch) | |
7407 | { | |
7408 | case '+': | |
7409 | if (remote_debug) | |
0f71a2f6 | 7410 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7411 | return 1; |
1216fa2c AC |
7412 | case '-': |
7413 | if (remote_debug) | |
7414 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7415 | /* FALLTHROUGH */ |
c906108c | 7416 | case SERIAL_TIMEOUT: |
c5aa993b | 7417 | tcount++; |
c906108c SS |
7418 | if (tcount > 3) |
7419 | return 0; | |
23860348 | 7420 | break; /* Retransmit buffer. */ |
c906108c SS |
7421 | case '$': |
7422 | { | |
40e3f985 | 7423 | if (remote_debug) |
2bc416ba | 7424 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7425 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7426 | /* It's probably an old response sent because an ACK |
7427 | was lost. Gobble up the packet and ack it so it | |
7428 | doesn't get retransmitted when we resend this | |
7429 | packet. */ | |
6d820c5c | 7430 | skip_frame (); |
c33e31fd | 7431 | remote_serial_write ("+", 1); |
23860348 | 7432 | continue; /* Now, go look for +. */ |
c906108c | 7433 | } |
74531fed PA |
7434 | |
7435 | case '%': | |
7436 | { | |
7437 | int val; | |
7438 | ||
7439 | /* If we got a notification, handle it, and go back to looking | |
7440 | for an ack. */ | |
7441 | /* We've found the start of a notification. Now | |
7442 | collect the data. */ | |
7443 | val = read_frame (&rs->buf, &rs->buf_size); | |
7444 | if (val >= 0) | |
7445 | { | |
7446 | if (remote_debug) | |
7447 | { | |
6e5abd65 PA |
7448 | struct cleanup *old_chain; |
7449 | char *str; | |
7450 | ||
7451 | str = escape_buffer (rs->buf, val); | |
7452 | old_chain = make_cleanup (xfree, str); | |
7453 | fprintf_unfiltered (gdb_stdlog, | |
7454 | " Notification received: %s\n", | |
7455 | str); | |
7456 | do_cleanups (old_chain); | |
74531fed | 7457 | } |
5965e028 | 7458 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7459 | /* We're in sync now, rewait for the ack. */ |
7460 | tcount = 0; | |
7461 | } | |
7462 | else | |
7463 | { | |
7464 | if (remote_debug) | |
7465 | { | |
7466 | if (!started_error_output) | |
7467 | { | |
7468 | started_error_output = 1; | |
7469 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7470 | } | |
7471 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7472 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7473 | } | |
7474 | } | |
7475 | continue; | |
7476 | } | |
7477 | /* fall-through */ | |
c906108c SS |
7478 | default: |
7479 | if (remote_debug) | |
7480 | { | |
7481 | if (!started_error_output) | |
7482 | { | |
7483 | started_error_output = 1; | |
0f71a2f6 | 7484 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7485 | } |
0f71a2f6 | 7486 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7487 | } |
7488 | continue; | |
7489 | } | |
23860348 | 7490 | break; /* Here to retransmit. */ |
c906108c SS |
7491 | } |
7492 | ||
7493 | #if 0 | |
7494 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7495 | able to get out next time we call QUIT, without anything as |
7496 | violent as interrupt_query. If we want to provide a way out of | |
7497 | here without getting to the next QUIT, it should be based on | |
7498 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7499 | if (quit_flag) |
7500 | { | |
7501 | quit_flag = 0; | |
7502 | interrupt_query (); | |
7503 | } | |
7504 | #endif | |
7505 | } | |
a6f3e723 | 7506 | return 0; |
c906108c SS |
7507 | } |
7508 | ||
6d820c5c DJ |
7509 | /* Come here after finding the start of a frame when we expected an |
7510 | ack. Do our best to discard the rest of this packet. */ | |
7511 | ||
7512 | static void | |
7513 | skip_frame (void) | |
7514 | { | |
7515 | int c; | |
7516 | ||
7517 | while (1) | |
7518 | { | |
7519 | c = readchar (remote_timeout); | |
7520 | switch (c) | |
7521 | { | |
7522 | case SERIAL_TIMEOUT: | |
7523 | /* Nothing we can do. */ | |
7524 | return; | |
7525 | case '#': | |
7526 | /* Discard the two bytes of checksum and stop. */ | |
7527 | c = readchar (remote_timeout); | |
7528 | if (c >= 0) | |
7529 | c = readchar (remote_timeout); | |
7530 | ||
7531 | return; | |
7532 | case '*': /* Run length encoding. */ | |
7533 | /* Discard the repeat count. */ | |
7534 | c = readchar (remote_timeout); | |
7535 | if (c < 0) | |
7536 | return; | |
7537 | break; | |
7538 | default: | |
7539 | /* A regular character. */ | |
7540 | break; | |
7541 | } | |
7542 | } | |
7543 | } | |
7544 | ||
c906108c | 7545 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7546 | into *BUF, verifying the checksum, length, and handling run-length |
7547 | compression. NUL terminate the buffer. If there is not enough room, | |
7548 | expand *BUF using xrealloc. | |
c906108c | 7549 | |
c2d11a7d JM |
7550 | Returns -1 on error, number of characters in buffer (ignoring the |
7551 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7552 | SERIAL status indications). */ |
c2d11a7d JM |
7553 | |
7554 | static long | |
6d820c5c DJ |
7555 | read_frame (char **buf_p, |
7556 | long *sizeof_buf) | |
c906108c SS |
7557 | { |
7558 | unsigned char csum; | |
c2d11a7d | 7559 | long bc; |
c906108c | 7560 | int c; |
6d820c5c | 7561 | char *buf = *buf_p; |
a6f3e723 | 7562 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7563 | |
7564 | csum = 0; | |
c2d11a7d | 7565 | bc = 0; |
c906108c SS |
7566 | |
7567 | while (1) | |
7568 | { | |
7569 | c = readchar (remote_timeout); | |
c906108c SS |
7570 | switch (c) |
7571 | { | |
7572 | case SERIAL_TIMEOUT: | |
7573 | if (remote_debug) | |
0f71a2f6 | 7574 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7575 | return -1; |
c906108c SS |
7576 | case '$': |
7577 | if (remote_debug) | |
0f71a2f6 JM |
7578 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7579 | gdb_stdlog); | |
23860348 | 7580 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7581 | case '#': |
7582 | { | |
7583 | unsigned char pktcsum; | |
e1b09194 AC |
7584 | int check_0 = 0; |
7585 | int check_1 = 0; | |
c906108c | 7586 | |
c2d11a7d | 7587 | buf[bc] = '\0'; |
c906108c | 7588 | |
e1b09194 AC |
7589 | check_0 = readchar (remote_timeout); |
7590 | if (check_0 >= 0) | |
7591 | check_1 = readchar (remote_timeout); | |
802188a7 | 7592 | |
e1b09194 AC |
7593 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7594 | { | |
7595 | if (remote_debug) | |
2bc416ba | 7596 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7597 | gdb_stdlog); |
e1b09194 AC |
7598 | return -1; |
7599 | } | |
7600 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7601 | { |
7602 | if (remote_debug) | |
2bc416ba | 7603 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7604 | gdb_stdlog); |
40e3f985 FN |
7605 | return -1; |
7606 | } | |
c906108c | 7607 | |
a6f3e723 SL |
7608 | /* Don't recompute the checksum; with no ack packets we |
7609 | don't have any way to indicate a packet retransmission | |
7610 | is necessary. */ | |
7611 | if (rs->noack_mode) | |
7612 | return bc; | |
7613 | ||
e1b09194 | 7614 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7615 | if (csum == pktcsum) |
c2d11a7d | 7616 | return bc; |
c906108c | 7617 | |
c5aa993b | 7618 | if (remote_debug) |
c906108c | 7619 | { |
6e5abd65 PA |
7620 | struct cleanup *old_chain; |
7621 | char *str; | |
7622 | ||
7623 | str = escape_buffer (buf, bc); | |
7624 | old_chain = make_cleanup (xfree, str); | |
7625 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7626 | "Bad checksum, sentsum=0x%x, " |
7627 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7628 | pktcsum, csum, str); |
7629 | do_cleanups (old_chain); | |
c906108c | 7630 | } |
c2d11a7d | 7631 | /* Number of characters in buffer ignoring trailing |
23860348 | 7632 | NULL. */ |
c2d11a7d | 7633 | return -1; |
c906108c | 7634 | } |
23860348 | 7635 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7636 | { |
7637 | int repeat; | |
c906108c | 7638 | |
a744cf53 | 7639 | csum += c; |
b4501125 AC |
7640 | c = readchar (remote_timeout); |
7641 | csum += c; | |
23860348 | 7642 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7643 | |
23860348 | 7644 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7645 | |
6d820c5c | 7646 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7647 | { |
6d820c5c DJ |
7648 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7649 | { | |
7650 | /* Make some more room in the buffer. */ | |
7651 | *sizeof_buf += repeat; | |
7652 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7653 | buf = *buf_p; | |
7654 | } | |
7655 | ||
c2d11a7d JM |
7656 | memset (&buf[bc], buf[bc - 1], repeat); |
7657 | bc += repeat; | |
c2c6d25f JM |
7658 | continue; |
7659 | } | |
7660 | ||
c2d11a7d | 7661 | buf[bc] = '\0'; |
6d820c5c | 7662 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7663 | return -1; |
c2c6d25f | 7664 | } |
c906108c | 7665 | default: |
6d820c5c | 7666 | if (bc >= *sizeof_buf - 1) |
c906108c | 7667 | { |
6d820c5c DJ |
7668 | /* Make some more room in the buffer. */ |
7669 | *sizeof_buf *= 2; | |
7670 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7671 | buf = *buf_p; | |
c906108c SS |
7672 | } |
7673 | ||
6d820c5c DJ |
7674 | buf[bc++] = c; |
7675 | csum += c; | |
7676 | continue; | |
c906108c SS |
7677 | } |
7678 | } | |
7679 | } | |
7680 | ||
7681 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7682 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7683 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7684 | rather than timing out; this is used (in synchronous mode) to wait | |
7685 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7686 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7687 | don't have to change all the calls to getpkt to deal with the | |
7688 | return value, because at the moment I don't know what the right | |
23860348 | 7689 | thing to do it for those. */ |
c906108c | 7690 | void |
6d820c5c DJ |
7691 | getpkt (char **buf, |
7692 | long *sizeof_buf, | |
c2d11a7d | 7693 | int forever) |
d9fcf2fb JM |
7694 | { |
7695 | int timed_out; | |
7696 | ||
7697 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7698 | } | |
7699 | ||
7700 | ||
7701 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7702 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7703 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7704 | rather than timing out; this is used (in synchronous mode) to wait | |
7705 | for a target that is is executing user code to stop. If FOREVER == | |
7706 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7707 | indication of this to the caller. Otherwise return the number of |
7708 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7709 | enough reason to return to the caller. *IS_NOTIF is an output |
7710 | boolean that indicates whether *BUF holds a notification or not | |
7711 | (a regular packet). */ | |
74531fed | 7712 | |
3172dc30 | 7713 | static int |
74531fed | 7714 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7715 | int expecting_notif, int *is_notif) |
c906108c | 7716 | { |
2d717e4f | 7717 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7718 | int c; |
7719 | int tries; | |
7720 | int timeout; | |
df4b58fe | 7721 | int val = -1; |
c906108c | 7722 | |
2d717e4f DJ |
7723 | /* We're reading a new response. Make sure we don't look at a |
7724 | previously cached response. */ | |
7725 | rs->cached_wait_status = 0; | |
7726 | ||
6d820c5c | 7727 | strcpy (*buf, "timeout"); |
c906108c SS |
7728 | |
7729 | if (forever) | |
74531fed PA |
7730 | timeout = watchdog > 0 ? watchdog : -1; |
7731 | else if (expecting_notif) | |
7732 | timeout = 0; /* There should already be a char in the buffer. If | |
7733 | not, bail out. */ | |
c906108c SS |
7734 | else |
7735 | timeout = remote_timeout; | |
7736 | ||
7737 | #define MAX_TRIES 3 | |
7738 | ||
74531fed PA |
7739 | /* Process any number of notifications, and then return when |
7740 | we get a packet. */ | |
7741 | for (;;) | |
c906108c | 7742 | { |
d9c43928 | 7743 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7744 | times. */ |
7745 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7746 | { |
74531fed PA |
7747 | /* This can loop forever if the remote side sends us |
7748 | characters continuously, but if it pauses, we'll get | |
7749 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7750 | we'll count that as a retry. | |
7751 | ||
7752 | Note that even when forever is set, we will only wait | |
7753 | forever prior to the start of a packet. After that, we | |
7754 | expect characters to arrive at a brisk pace. They should | |
7755 | show up within remote_timeout intervals. */ | |
7756 | do | |
7757 | c = readchar (timeout); | |
7758 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7759 | |
7760 | if (c == SERIAL_TIMEOUT) | |
7761 | { | |
74531fed PA |
7762 | if (expecting_notif) |
7763 | return -1; /* Don't complain, it's normal to not get | |
7764 | anything in this case. */ | |
7765 | ||
23860348 | 7766 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7767 | { |
2acceee2 | 7768 | QUIT; |
78a095c3 | 7769 | remote_unpush_target (); |
598d3636 JK |
7770 | throw_error (TARGET_CLOSE_ERROR, |
7771 | _("Watchdog timeout has expired. " | |
7772 | "Target detached.")); | |
c906108c | 7773 | } |
c906108c | 7774 | if (remote_debug) |
0f71a2f6 | 7775 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7776 | } |
74531fed PA |
7777 | else |
7778 | { | |
7779 | /* We've found the start of a packet or notification. | |
7780 | Now collect the data. */ | |
7781 | val = read_frame (buf, sizeof_buf); | |
7782 | if (val >= 0) | |
7783 | break; | |
7784 | } | |
7785 | ||
c33e31fd | 7786 | remote_serial_write ("-", 1); |
c906108c | 7787 | } |
c906108c | 7788 | |
74531fed PA |
7789 | if (tries > MAX_TRIES) |
7790 | { | |
7791 | /* We have tried hard enough, and just can't receive the | |
7792 | packet/notification. Give up. */ | |
7793 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7794 | |
74531fed PA |
7795 | /* Skip the ack char if we're in no-ack mode. */ |
7796 | if (!rs->noack_mode) | |
c33e31fd | 7797 | remote_serial_write ("+", 1); |
74531fed PA |
7798 | return -1; |
7799 | } | |
c906108c | 7800 | |
74531fed PA |
7801 | /* If we got an ordinary packet, return that to our caller. */ |
7802 | if (c == '$') | |
c906108c SS |
7803 | { |
7804 | if (remote_debug) | |
43e526b9 | 7805 | { |
6e5abd65 PA |
7806 | struct cleanup *old_chain; |
7807 | char *str; | |
7808 | ||
7809 | str = escape_buffer (*buf, val); | |
7810 | old_chain = make_cleanup (xfree, str); | |
7811 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7812 | do_cleanups (old_chain); | |
43e526b9 | 7813 | } |
a6f3e723 SL |
7814 | |
7815 | /* Skip the ack char if we're in no-ack mode. */ | |
7816 | if (!rs->noack_mode) | |
c33e31fd | 7817 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7818 | if (is_notif != NULL) |
7819 | *is_notif = 0; | |
0876f84a | 7820 | return val; |
c906108c SS |
7821 | } |
7822 | ||
74531fed PA |
7823 | /* If we got a notification, handle it, and go back to looking |
7824 | for a packet. */ | |
7825 | else | |
7826 | { | |
7827 | gdb_assert (c == '%'); | |
7828 | ||
7829 | if (remote_debug) | |
7830 | { | |
6e5abd65 PA |
7831 | struct cleanup *old_chain; |
7832 | char *str; | |
7833 | ||
7834 | str = escape_buffer (*buf, val); | |
7835 | old_chain = make_cleanup (xfree, str); | |
7836 | fprintf_unfiltered (gdb_stdlog, | |
7837 | " Notification received: %s\n", | |
7838 | str); | |
7839 | do_cleanups (old_chain); | |
74531fed | 7840 | } |
fee9eda9 YQ |
7841 | if (is_notif != NULL) |
7842 | *is_notif = 1; | |
c906108c | 7843 | |
5965e028 | 7844 | handle_notification (rs->notif_state, *buf); |
c906108c | 7845 | |
74531fed | 7846 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7847 | |
74531fed | 7848 | if (expecting_notif) |
fee9eda9 | 7849 | return val; |
74531fed PA |
7850 | } |
7851 | } | |
7852 | } | |
7853 | ||
7854 | static int | |
7855 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7856 | { | |
fee9eda9 | 7857 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7858 | } |
7859 | ||
7860 | static int | |
fee9eda9 YQ |
7861 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7862 | int *is_notif) | |
74531fed | 7863 | { |
fee9eda9 YQ |
7864 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7865 | is_notif); | |
c906108c | 7866 | } |
74531fed | 7867 | |
c906108c SS |
7868 | \f |
7869 | static void | |
7d85a9c0 | 7870 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7871 | { |
c90a6fb7 | 7872 | volatile struct gdb_exception ex; |
0fdf84ca PA |
7873 | |
7874 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7875 | aren't on speaking terms with the remote system. */ |
0fdf84ca PA |
7876 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
7877 | { | |
7878 | putpkt ("k"); | |
7879 | } | |
7880 | if (ex.reason < 0) | |
7881 | { | |
7882 | if (ex.error == TARGET_CLOSE_ERROR) | |
7883 | { | |
7884 | /* If we got an (EOF) error that caused the target | |
7885 | to go away, then we're done, that's what we wanted. | |
7886 | "k" is susceptible to cause a premature EOF, given | |
7887 | that the remote server isn't actually required to | |
7888 | reply to "k", and it can happen that it doesn't | |
7889 | even get to reply ACK to the "k". */ | |
7890 | return; | |
7891 | } | |
7892 | ||
7893 | /* Otherwise, something went wrong. We didn't actually kill | |
7894 | the target. Just propagate the exception, and let the | |
7895 | user or higher layers decide what to do. */ | |
7896 | throw_exception (ex); | |
7897 | } | |
43ff13b4 | 7898 | |
0fdf84ca PA |
7899 | /* We've killed the remote end, we get to mourn it. Since this is |
7900 | target remote, single-process, mourning the inferior also | |
7901 | unpushes remote_ops. */ | |
43ff13b4 JM |
7902 | target_mourn_inferior (); |
7903 | } | |
7904 | ||
82f73884 PA |
7905 | static int |
7906 | remote_vkill (int pid, struct remote_state *rs) | |
7907 | { | |
7908 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7909 | return -1; | |
7910 | ||
7911 | /* Tell the remote target to detach. */ | |
bba74b36 | 7912 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7913 | putpkt (rs->buf); |
7914 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7915 | ||
7916 | if (packet_ok (rs->buf, | |
7917 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7918 | return 0; | |
7919 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7920 | return -1; | |
7921 | else | |
7922 | return 1; | |
7923 | } | |
7924 | ||
7925 | static void | |
7d85a9c0 | 7926 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7927 | { |
7928 | int res; | |
7929 | int pid = ptid_get_pid (inferior_ptid); | |
7930 | struct remote_state *rs = get_remote_state (); | |
7931 | ||
7932 | res = remote_vkill (pid, rs); | |
901f9912 | 7933 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7934 | { |
7935 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7936 | to specify the pid. */ | |
7937 | ||
7938 | putpkt ("k"); | |
7939 | #if 0 | |
7940 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7941 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7942 | res = 1; | |
7943 | #else | |
7944 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7945 | we do or not. For the existing stubs, kill is a noop. */ | |
7946 | res = 0; | |
7947 | #endif | |
7948 | } | |
7949 | ||
7950 | if (res != 0) | |
7951 | error (_("Can't kill process")); | |
7952 | ||
82f73884 PA |
7953 | target_mourn_inferior (); |
7954 | } | |
7955 | ||
c906108c | 7956 | static void |
136d6dae | 7957 | remote_mourn (struct target_ops *ops) |
c906108c | 7958 | { |
136d6dae | 7959 | remote_mourn_1 (ops); |
c906108c SS |
7960 | } |
7961 | ||
c906108c SS |
7962 | /* Worker function for remote_mourn. */ |
7963 | static void | |
fba45db2 | 7964 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7965 | { |
7966 | unpush_target (target); | |
ce5ce7ed | 7967 | |
8a2492ee PA |
7968 | /* remote_close takes care of doing most of the clean up. */ |
7969 | generic_mourn_inferior (); | |
c906108c SS |
7970 | } |
7971 | ||
2d717e4f DJ |
7972 | static void |
7973 | extended_remote_mourn_1 (struct target_ops *target) | |
7974 | { | |
7975 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7976 | |
e24a49d8 PA |
7977 | /* In case we got here due to an error, but we're going to stay |
7978 | connected. */ | |
7979 | rs->waiting_for_stop_reply = 0; | |
7980 | ||
dc1981d7 PA |
7981 | /* If the current general thread belonged to the process we just |
7982 | detached from or has exited, the remote side current general | |
7983 | thread becomes undefined. Considering a case like this: | |
7984 | ||
7985 | - We just got here due to a detach. | |
7986 | - The process that we're detaching from happens to immediately | |
7987 | report a global breakpoint being hit in non-stop mode, in the | |
7988 | same thread we had selected before. | |
7989 | - GDB attaches to this process again. | |
7990 | - This event happens to be the next event we handle. | |
7991 | ||
7992 | GDB would consider that the current general thread didn't need to | |
7993 | be set on the stub side (with Hg), since for all it knew, | |
7994 | GENERAL_THREAD hadn't changed. | |
7995 | ||
7996 | Notice that although in all-stop mode, the remote server always | |
7997 | sets the current thread to the thread reporting the stop event, | |
7998 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7999 | not* change the current thread when reporting a breakpoint hit, | |
8000 | due to the decoupling of event reporting and event handling. | |
8001 | ||
8002 | To keep things simple, we always invalidate our notion of the | |
8003 | current thread. */ | |
47f8a51d | 8004 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8005 | |
2d717e4f DJ |
8006 | /* Unlike "target remote", we do not want to unpush the target; then |
8007 | the next time the user says "run", we won't be connected. */ | |
8008 | ||
48aa3c27 PA |
8009 | /* Call common code to mark the inferior as not running. */ |
8010 | generic_mourn_inferior (); | |
8011 | ||
d729566a | 8012 | if (!have_inferiors ()) |
2d717e4f | 8013 | { |
82f73884 PA |
8014 | if (!remote_multi_process_p (rs)) |
8015 | { | |
8016 | /* Check whether the target is running now - some remote stubs | |
8017 | automatically restart after kill. */ | |
8018 | putpkt ("?"); | |
8019 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8020 | ||
8021 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8022 | { | |
3e43a32a MS |
8023 | /* Assume that the target has been restarted. Set |
8024 | inferior_ptid so that bits of core GDB realizes | |
8025 | there's something here, e.g., so that the user can | |
8026 | say "kill" again. */ | |
82f73884 PA |
8027 | inferior_ptid = magic_null_ptid; |
8028 | } | |
82f73884 | 8029 | } |
2d717e4f DJ |
8030 | } |
8031 | } | |
c906108c SS |
8032 | |
8033 | static void | |
136d6dae | 8034 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 8035 | { |
136d6dae | 8036 | extended_remote_mourn_1 (ops); |
2d717e4f | 8037 | } |
c906108c | 8038 | |
03583c20 UW |
8039 | static int |
8040 | extended_remote_supports_disable_randomization (void) | |
8041 | { | |
8042 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
8043 | == PACKET_ENABLE); | |
8044 | } | |
8045 | ||
8046 | static void | |
8047 | extended_remote_disable_randomization (int val) | |
8048 | { | |
8049 | struct remote_state *rs = get_remote_state (); | |
8050 | char *reply; | |
8051 | ||
bba74b36 YQ |
8052 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8053 | val); | |
03583c20 UW |
8054 | putpkt (rs->buf); |
8055 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8056 | if (*reply == '\0') | |
8057 | error (_("Target does not support QDisableRandomization.")); | |
8058 | if (strcmp (reply, "OK") != 0) | |
8059 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8060 | } | |
8061 | ||
2d717e4f DJ |
8062 | static int |
8063 | extended_remote_run (char *args) | |
8064 | { | |
8065 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8066 | int len; |
c906108c | 8067 | |
2d717e4f DJ |
8068 | /* If the user has disabled vRun support, or we have detected that |
8069 | support is not available, do not try it. */ | |
8070 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
8071 | return -1; | |
424163ea | 8072 | |
2d717e4f DJ |
8073 | strcpy (rs->buf, "vRun;"); |
8074 | len = strlen (rs->buf); | |
c906108c | 8075 | |
2d717e4f DJ |
8076 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8077 | error (_("Remote file name too long for run packet")); | |
8078 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
8079 | ||
d1a41061 | 8080 | gdb_assert (args != NULL); |
2d717e4f DJ |
8081 | if (*args) |
8082 | { | |
8083 | struct cleanup *back_to; | |
8084 | int i; | |
8085 | char **argv; | |
8086 | ||
d1a41061 | 8087 | argv = gdb_buildargv (args); |
2d717e4f DJ |
8088 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
8089 | for (i = 0; argv[i] != NULL; i++) | |
8090 | { | |
8091 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8092 | error (_("Argument list too long for run packet")); | |
8093 | rs->buf[len++] = ';'; | |
8094 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
8095 | } | |
8096 | do_cleanups (back_to); | |
8097 | } | |
8098 | ||
8099 | rs->buf[len++] = '\0'; | |
8100 | ||
8101 | putpkt (rs->buf); | |
8102 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8103 | ||
8104 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
8105 | { | |
3405876a | 8106 | /* We have a wait response. All is well. */ |
2d717e4f DJ |
8107 | return 0; |
8108 | } | |
8109 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
8110 | /* It wasn't disabled before, but it is now. */ | |
8111 | return -1; | |
8112 | else | |
8113 | { | |
8114 | if (remote_exec_file[0] == '\0') | |
8115 | error (_("Running the default executable on the remote target failed; " | |
8116 | "try \"set remote exec-file\"?")); | |
8117 | else | |
8118 | error (_("Running \"%s\" on the remote target failed"), | |
8119 | remote_exec_file); | |
8120 | } | |
c906108c SS |
8121 | } |
8122 | ||
2d717e4f DJ |
8123 | /* In the extended protocol we want to be able to do things like |
8124 | "run" and have them basically work as expected. So we need | |
8125 | a special create_inferior function. We support changing the | |
8126 | executable file and the command line arguments, but not the | |
8127 | environment. */ | |
8128 | ||
43ff13b4 | 8129 | static void |
77a19445 TT |
8130 | extended_remote_create_inferior (struct target_ops *ops, |
8131 | char *exec_file, char *args, | |
8132 | char **env, int from_tty) | |
43ff13b4 | 8133 | { |
3405876a PA |
8134 | int run_worked; |
8135 | char *stop_reply; | |
8136 | struct remote_state *rs = get_remote_state (); | |
8137 | ||
43ff13b4 | 8138 | /* If running asynchronously, register the target file descriptor |
23860348 | 8139 | with the event loop. */ |
75c99385 | 8140 | if (target_can_async_p ()) |
2acceee2 | 8141 | target_async (inferior_event_handler, 0); |
43ff13b4 | 8142 | |
03583c20 UW |
8143 | /* Disable address space randomization if requested (and supported). */ |
8144 | if (extended_remote_supports_disable_randomization ()) | |
8145 | extended_remote_disable_randomization (disable_randomization); | |
8146 | ||
43ff13b4 | 8147 | /* Now restart the remote server. */ |
3405876a PA |
8148 | run_worked = extended_remote_run (args) != -1; |
8149 | if (!run_worked) | |
2d717e4f DJ |
8150 | { |
8151 | /* vRun was not supported. Fail if we need it to do what the | |
8152 | user requested. */ | |
8153 | if (remote_exec_file[0]) | |
8154 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8155 | if (args[0]) | |
8156 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8157 | |
2d717e4f DJ |
8158 | /* Fall back to "R". */ |
8159 | extended_remote_restart (); | |
8160 | } | |
424163ea | 8161 | |
6c95b8df PA |
8162 | if (!have_inferiors ()) |
8163 | { | |
8164 | /* Clean up from the last time we ran, before we mark the target | |
8165 | running again. This will mark breakpoints uninserted, and | |
8166 | get_offsets may insert breakpoints. */ | |
8167 | init_thread_list (); | |
8168 | init_wait_for_inferior (); | |
8169 | } | |
45280a52 | 8170 | |
3405876a PA |
8171 | /* vRun's success return is a stop reply. */ |
8172 | stop_reply = run_worked ? rs->buf : NULL; | |
8173 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8174 | |
2d717e4f DJ |
8175 | /* Get updated offsets, if the stub uses qOffsets. */ |
8176 | get_offsets (); | |
2d717e4f | 8177 | } |
c906108c | 8178 | \f |
c5aa993b | 8179 | |
b775012e LM |
8180 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8181 | the list of conditions (in agent expression bytecode format), if any, the | |
8182 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8183 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8184 | |
8185 | static int | |
8186 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8187 | struct bp_target_info *bp_tgt, char *buf, |
8188 | char *buf_end) | |
b775012e LM |
8189 | { |
8190 | struct agent_expr *aexpr = NULL; | |
8191 | int i, ix; | |
8192 | char *pkt; | |
8193 | char *buf_start = buf; | |
8194 | ||
8195 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8196 | return 0; | |
8197 | ||
8198 | buf += strlen (buf); | |
bba74b36 | 8199 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8200 | buf++; |
8201 | ||
8202 | /* Send conditions to the target and free the vector. */ | |
8203 | for (ix = 0; | |
8204 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8205 | ix++) | |
8206 | { | |
bba74b36 | 8207 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8208 | buf += strlen (buf); |
8209 | for (i = 0; i < aexpr->len; ++i) | |
8210 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8211 | *buf = '\0'; | |
8212 | } | |
b775012e LM |
8213 | return 0; |
8214 | } | |
8215 | ||
d3ce09f5 SS |
8216 | static void |
8217 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8218 | struct bp_target_info *bp_tgt, char *buf) | |
8219 | { | |
8220 | struct agent_expr *aexpr = NULL; | |
8221 | int i, ix; | |
8222 | ||
8223 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8224 | return; | |
8225 | ||
8226 | buf += strlen (buf); | |
8227 | ||
8228 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8229 | buf += strlen (buf); | |
8230 | ||
8231 | /* Concatenate all the agent expressions that are commands into the | |
8232 | cmds parameter. */ | |
8233 | for (ix = 0; | |
8234 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8235 | ix++) | |
8236 | { | |
8237 | sprintf (buf, "X%x,", aexpr->len); | |
8238 | buf += strlen (buf); | |
8239 | for (i = 0; i < aexpr->len; ++i) | |
8240 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8241 | *buf = '\0'; | |
8242 | } | |
d3ce09f5 SS |
8243 | } |
8244 | ||
8181d85f DJ |
8245 | /* Insert a breakpoint. On targets that have software breakpoint |
8246 | support, we ask the remote target to do the work; on targets | |
8247 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8248 | |
8249 | static int | |
3db08215 MM |
8250 | remote_insert_breakpoint (struct target_ops *ops, |
8251 | struct gdbarch *gdbarch, | |
a6d9a66e | 8252 | struct bp_target_info *bp_tgt) |
c906108c | 8253 | { |
d471ea57 AC |
8254 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8255 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8256 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8257 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8258 | |
444abaca | 8259 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8260 | { |
7c0f6dcc | 8261 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8262 | struct remote_state *rs; |
bba74b36 | 8263 | char *p, *endbuf; |
7c0f6dcc | 8264 | int bpsize; |
b775012e | 8265 | struct condition_list *cond = NULL; |
4fff2411 | 8266 | |
28439a30 PA |
8267 | /* Make sure the remote is pointing at the right process, if |
8268 | necessary. */ | |
8269 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8270 | set_general_process (); | |
8271 | ||
a1dcb23a | 8272 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8273 | |
8274 | rs = get_remote_state (); | |
8275 | p = rs->buf; | |
bba74b36 | 8276 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8277 | |
96baa820 JM |
8278 | *(p++) = 'Z'; |
8279 | *(p++) = '0'; | |
8280 | *(p++) = ','; | |
7c0f6dcc | 8281 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8282 | p += hexnumstr (p, addr); |
bba74b36 | 8283 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8284 | |
b775012e | 8285 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8286 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8287 | |
d3ce09f5 SS |
8288 | if (remote_can_run_breakpoint_commands ()) |
8289 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8290 | ||
6d820c5c DJ |
8291 | putpkt (rs->buf); |
8292 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8293 | |
6d820c5c | 8294 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8295 | { |
d471ea57 AC |
8296 | case PACKET_ERROR: |
8297 | return -1; | |
8298 | case PACKET_OK: | |
7c0f6dcc JL |
8299 | bp_tgt->placed_address = addr; |
8300 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8301 | return 0; |
8302 | case PACKET_UNKNOWN: | |
8303 | break; | |
96baa820 JM |
8304 | } |
8305 | } | |
c906108c | 8306 | |
0000e5cc PA |
8307 | /* If this breakpoint has target-side commands but this stub doesn't |
8308 | support Z0 packets, throw error. */ | |
8309 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8310 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8311 | Target doesn't support breakpoints that have target side commands.")); | |
8312 | ||
3db08215 | 8313 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8314 | } |
8315 | ||
8316 | static int | |
3db08215 MM |
8317 | remote_remove_breakpoint (struct target_ops *ops, |
8318 | struct gdbarch *gdbarch, | |
a6d9a66e | 8319 | struct bp_target_info *bp_tgt) |
c906108c | 8320 | { |
8181d85f | 8321 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8322 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8323 | |
444abaca | 8324 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8325 | { |
6d820c5c | 8326 | char *p = rs->buf; |
bba74b36 | 8327 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8328 | |
28439a30 PA |
8329 | /* Make sure the remote is pointing at the right process, if |
8330 | necessary. */ | |
8331 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8332 | set_general_process (); | |
8333 | ||
96baa820 JM |
8334 | *(p++) = 'z'; |
8335 | *(p++) = '0'; | |
8336 | *(p++) = ','; | |
8337 | ||
8181d85f DJ |
8338 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8339 | p += hexnumstr (p, addr); | |
bba74b36 | 8340 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8341 | |
6d820c5c DJ |
8342 | putpkt (rs->buf); |
8343 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8344 | |
6d820c5c | 8345 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8346 | } |
8347 | ||
3db08215 | 8348 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8349 | } |
8350 | ||
d471ea57 AC |
8351 | static int |
8352 | watchpoint_to_Z_packet (int type) | |
8353 | { | |
8354 | switch (type) | |
8355 | { | |
8356 | case hw_write: | |
bb858e6a | 8357 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8358 | break; |
8359 | case hw_read: | |
bb858e6a | 8360 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8361 | break; |
8362 | case hw_access: | |
bb858e6a | 8363 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8364 | break; |
8365 | default: | |
8e65ff28 | 8366 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8367 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8368 | } |
8369 | } | |
8370 | ||
3c3bea1c | 8371 | static int |
0cf6dd15 TJB |
8372 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
8373 | struct expression *cond) | |
96baa820 | 8374 | { |
d01949b6 | 8375 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8376 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8377 | char *p; |
d471ea57 | 8378 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8379 | |
444abaca | 8380 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8381 | return 1; |
802188a7 | 8382 | |
28439a30 PA |
8383 | /* Make sure the remote is pointing at the right process, if |
8384 | necessary. */ | |
8385 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8386 | set_general_process (); | |
8387 | ||
bba74b36 | 8388 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8389 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8390 | addr = remote_address_masked (addr); |
8391 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8392 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8393 | |
6d820c5c DJ |
8394 | putpkt (rs->buf); |
8395 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8396 | |
6d820c5c | 8397 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8398 | { |
8399 | case PACKET_ERROR: | |
d471ea57 | 8400 | return -1; |
85d721b8 PA |
8401 | case PACKET_UNKNOWN: |
8402 | return 1; | |
d471ea57 AC |
8403 | case PACKET_OK: |
8404 | return 0; | |
8405 | } | |
8e65ff28 | 8406 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8407 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8408 | } |
8409 | ||
283002cf MR |
8410 | static int |
8411 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8412 | CORE_ADDR start, int length) | |
8413 | { | |
8414 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8415 | ||
8416 | return diff < length; | |
8417 | } | |
8418 | ||
d471ea57 | 8419 | |
3c3bea1c | 8420 | static int |
0cf6dd15 TJB |
8421 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8422 | struct expression *cond) | |
96baa820 | 8423 | { |
d01949b6 | 8424 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8425 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8426 | char *p; |
d471ea57 AC |
8427 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8428 | ||
444abaca | 8429 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8430 | return -1; |
802188a7 | 8431 | |
28439a30 PA |
8432 | /* Make sure the remote is pointing at the right process, if |
8433 | necessary. */ | |
8434 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8435 | set_general_process (); | |
8436 | ||
bba74b36 | 8437 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8438 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8439 | addr = remote_address_masked (addr); |
8440 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8441 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8442 | putpkt (rs->buf); |
8443 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8444 | |
6d820c5c | 8445 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8446 | { |
8447 | case PACKET_ERROR: | |
8448 | case PACKET_UNKNOWN: | |
8449 | return -1; | |
8450 | case PACKET_OK: | |
8451 | return 0; | |
8452 | } | |
8e65ff28 | 8453 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8454 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8455 | } |
8456 | ||
3c3bea1c | 8457 | |
501eef12 | 8458 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8459 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8460 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8461 | |
480a3f21 PW |
8462 | static int |
8463 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8464 | { | |
8465 | if (remote_hw_watchpoint_length_limit == 0) | |
8466 | return 0; | |
8467 | else if (remote_hw_watchpoint_length_limit < 0) | |
8468 | return 1; | |
8469 | else if (len <= remote_hw_watchpoint_length_limit) | |
8470 | return 1; | |
8471 | else | |
8472 | return 0; | |
8473 | } | |
8474 | ||
b9362cc7 | 8475 | static int |
3c3bea1c | 8476 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8477 | { |
3c3bea1c GS |
8478 | if (type == bp_hardware_breakpoint) |
8479 | { | |
8480 | if (remote_hw_breakpoint_limit == 0) | |
8481 | return 0; | |
501eef12 AC |
8482 | else if (remote_hw_breakpoint_limit < 0) |
8483 | return 1; | |
3c3bea1c GS |
8484 | else if (cnt <= remote_hw_breakpoint_limit) |
8485 | return 1; | |
8486 | } | |
8487 | else | |
8488 | { | |
8489 | if (remote_hw_watchpoint_limit == 0) | |
8490 | return 0; | |
501eef12 AC |
8491 | else if (remote_hw_watchpoint_limit < 0) |
8492 | return 1; | |
3c3bea1c GS |
8493 | else if (ot) |
8494 | return -1; | |
8495 | else if (cnt <= remote_hw_watchpoint_limit) | |
8496 | return 1; | |
8497 | } | |
8498 | return -1; | |
8499 | } | |
8500 | ||
b9362cc7 | 8501 | static int |
3c3bea1c GS |
8502 | remote_stopped_by_watchpoint (void) |
8503 | { | |
ee154bee TT |
8504 | struct remote_state *rs = get_remote_state (); |
8505 | ||
8506 | return rs->remote_stopped_by_watchpoint_p; | |
3c3bea1c GS |
8507 | } |
8508 | ||
4aa7a7f5 JJ |
8509 | static int |
8510 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8511 | { |
ee154bee | 8512 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8513 | int rc = 0; |
a744cf53 | 8514 | |
d983da9c | 8515 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 | 8516 | { |
ee154bee | 8517 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8518 | rc = 1; |
8519 | } | |
8520 | ||
8521 | return rc; | |
3c3bea1c GS |
8522 | } |
8523 | ||
8524 | ||
8525 | static int | |
a6d9a66e UW |
8526 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8527 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8528 | { |
8181d85f | 8529 | CORE_ADDR addr; |
4fff2411 | 8530 | struct remote_state *rs; |
bba74b36 | 8531 | char *p, *endbuf; |
dd61ec5c | 8532 | char *message; |
802188a7 | 8533 | |
c8189ed1 | 8534 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8535 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8536 | |
a1dcb23a | 8537 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8538 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8539 | |
444abaca | 8540 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8541 | return -1; |
2bc416ba | 8542 | |
28439a30 PA |
8543 | /* Make sure the remote is pointing at the right process, if |
8544 | necessary. */ | |
8545 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8546 | set_general_process (); | |
8547 | ||
4fff2411 JZ |
8548 | rs = get_remote_state (); |
8549 | p = rs->buf; | |
bba74b36 | 8550 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8551 | |
96baa820 JM |
8552 | *(p++) = 'Z'; |
8553 | *(p++) = '1'; | |
8554 | *(p++) = ','; | |
802188a7 | 8555 | |
8181d85f | 8556 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8557 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8558 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8559 | |
b775012e | 8560 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8561 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8562 | |
d3ce09f5 SS |
8563 | if (remote_can_run_breakpoint_commands ()) |
8564 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8565 | ||
6d820c5c DJ |
8566 | putpkt (rs->buf); |
8567 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8568 | |
6d820c5c | 8569 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8570 | { |
8571 | case PACKET_ERROR: | |
dd61ec5c MW |
8572 | if (rs->buf[1] == '.') |
8573 | { | |
8574 | message = strchr (rs->buf + 2, '.'); | |
8575 | if (message) | |
0316657e | 8576 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8577 | } |
8578 | return -1; | |
d471ea57 AC |
8579 | case PACKET_UNKNOWN: |
8580 | return -1; | |
8581 | case PACKET_OK: | |
8582 | return 0; | |
8583 | } | |
8e65ff28 | 8584 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8585 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8586 | } |
8587 | ||
d471ea57 | 8588 | |
802188a7 | 8589 | static int |
a6d9a66e UW |
8590 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8591 | struct bp_target_info *bp_tgt) | |
96baa820 | 8592 | { |
8181d85f | 8593 | CORE_ADDR addr; |
d01949b6 | 8594 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8595 | char *p = rs->buf; |
bba74b36 | 8596 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8597 | |
444abaca | 8598 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8599 | return -1; |
802188a7 | 8600 | |
28439a30 PA |
8601 | /* Make sure the remote is pointing at the right process, if |
8602 | necessary. */ | |
8603 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8604 | set_general_process (); | |
8605 | ||
96baa820 JM |
8606 | *(p++) = 'z'; |
8607 | *(p++) = '1'; | |
8608 | *(p++) = ','; | |
802188a7 | 8609 | |
8181d85f | 8610 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8611 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8612 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8613 | |
6d820c5c DJ |
8614 | putpkt (rs->buf); |
8615 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8616 | |
6d820c5c | 8617 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8618 | { |
8619 | case PACKET_ERROR: | |
8620 | case PACKET_UNKNOWN: | |
8621 | return -1; | |
8622 | case PACKET_OK: | |
8623 | return 0; | |
8624 | } | |
8e65ff28 | 8625 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8626 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8627 | } |
96baa820 | 8628 | |
4a5e7a5b PA |
8629 | /* Verify memory using the "qCRC:" request. */ |
8630 | ||
8631 | static int | |
8632 | remote_verify_memory (struct target_ops *ops, | |
8633 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8634 | { | |
8635 | struct remote_state *rs = get_remote_state (); | |
8636 | unsigned long host_crc, target_crc; | |
8637 | char *tmp; | |
8638 | ||
28439a30 PA |
8639 | /* Make sure the remote is pointing at the right process. */ |
8640 | set_general_process (); | |
8641 | ||
4a5e7a5b PA |
8642 | /* FIXME: assumes lma can fit into long. */ |
8643 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8644 | (long) lma, (long) size); | |
8645 | putpkt (rs->buf); | |
8646 | ||
8647 | /* Be clever; compute the host_crc before waiting for target | |
8648 | reply. */ | |
85ec6ce7 | 8649 | host_crc = xcrc32 (data, size, 0xffffffff); |
4a5e7a5b PA |
8650 | |
8651 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8652 | if (rs->buf[0] == 'E') | |
8653 | return -1; | |
8654 | ||
8655 | if (rs->buf[0] != 'C') | |
8656 | error (_("remote target does not support this operation")); | |
8657 | ||
8658 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8659 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8660 | ||
8661 | return (host_crc == target_crc); | |
8662 | } | |
8663 | ||
c906108c SS |
8664 | /* compare-sections command |
8665 | ||
8666 | With no arguments, compares each loadable section in the exec bfd | |
8667 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8668 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8669 | |
c906108c | 8670 | static void |
fba45db2 | 8671 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8672 | { |
8673 | asection *s; | |
c906108c | 8674 | struct cleanup *old_chain; |
948f8e3d | 8675 | gdb_byte *sectdata; |
ce359b09 | 8676 | const char *sectname; |
c906108c SS |
8677 | bfd_size_type size; |
8678 | bfd_vma lma; | |
8679 | int matched = 0; | |
8680 | int mismatched = 0; | |
4a5e7a5b | 8681 | int res; |
c906108c SS |
8682 | |
8683 | if (!exec_bfd) | |
8a3fe4f8 | 8684 | error (_("command cannot be used without an exec file")); |
c906108c | 8685 | |
28439a30 PA |
8686 | /* Make sure the remote is pointing at the right process. */ |
8687 | set_general_process (); | |
8688 | ||
c5aa993b | 8689 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8690 | { |
8691 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8692 | continue; /* Skip non-loadable section. */ |
c906108c | 8693 | |
2c500098 | 8694 | size = bfd_get_section_size (s); |
c906108c | 8695 | if (size == 0) |
0df8b418 | 8696 | continue; /* Skip zero-length section. */ |
c906108c | 8697 | |
ce359b09 | 8698 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8699 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8700 | continue; /* Not the section selected by user. */ |
c906108c | 8701 | |
0df8b418 | 8702 | matched = 1; /* Do this section. */ |
c906108c | 8703 | lma = s->lma; |
c906108c | 8704 | |
c906108c | 8705 | sectdata = xmalloc (size); |
b8c9b27d | 8706 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8707 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8708 | |
4a5e7a5b PA |
8709 | res = target_verify_memory (sectdata, lma, size); |
8710 | ||
8711 | if (res == -1) | |
5af949e3 | 8712 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8713 | paddress (target_gdbarch (), lma), |
8714 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8715 | |
5af949e3 | 8716 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8717 | paddress (target_gdbarch (), lma), |
8718 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8719 | if (res) |
c906108c SS |
8720 | printf_filtered ("matched.\n"); |
8721 | else | |
c5aa993b JM |
8722 | { |
8723 | printf_filtered ("MIS-MATCHED!\n"); | |
8724 | mismatched++; | |
8725 | } | |
c906108c SS |
8726 | |
8727 | do_cleanups (old_chain); | |
8728 | } | |
8729 | if (mismatched > 0) | |
8a3fe4f8 AC |
8730 | warning (_("One or more sections of the remote executable does not match\n\ |
8731 | the loaded file\n")); | |
c906108c | 8732 | if (args && !matched) |
a3f17187 | 8733 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8734 | } |
8735 | ||
0e7f50da UW |
8736 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8737 | into remote target. The number of bytes written to the remote | |
8738 | target is returned, or -1 for error. */ | |
8739 | ||
8740 | static LONGEST | |
8741 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8742 | const char *annex, const gdb_byte *writebuf, | |
8743 | ULONGEST offset, LONGEST len, | |
8744 | struct packet_config *packet) | |
8745 | { | |
8746 | int i, buf_len; | |
8747 | ULONGEST n; | |
0e7f50da UW |
8748 | struct remote_state *rs = get_remote_state (); |
8749 | int max_size = get_memory_write_packet_size (); | |
8750 | ||
8751 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8752 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8753 | |
8754 | /* Insert header. */ | |
8755 | i = snprintf (rs->buf, max_size, | |
8756 | "qXfer:%s:write:%s:%s:", | |
8757 | object_name, annex ? annex : "", | |
8758 | phex_nz (offset, sizeof offset)); | |
8759 | max_size -= (i + 1); | |
8760 | ||
8761 | /* Escape as much data as fits into rs->buf. */ | |
8762 | buf_len = remote_escape_output | |
bc20a4af | 8763 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8764 | |
8765 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8766 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8767 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8768 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8769 | |
8770 | unpack_varlen_hex (rs->buf, &n); | |
8771 | return n; | |
8772 | } | |
8773 | ||
0876f84a DJ |
8774 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8775 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8776 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8777 | The number of bytes read may be less than LEN without indicating an | |
8778 | EOF. PACKET is checked and updated to indicate whether the remote | |
8779 | target supports this object. */ | |
8780 | ||
8781 | static LONGEST | |
8782 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8783 | const char *annex, | |
8784 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8785 | struct packet_config *packet) | |
8786 | { | |
0876f84a | 8787 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8788 | LONGEST i, n, packet_len; |
8789 | ||
8790 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8791 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8792 | |
8793 | /* Check whether we've cached an end-of-object packet that matches | |
8794 | this request. */ | |
8e88304f | 8795 | if (rs->finished_object) |
0876f84a | 8796 | { |
8e88304f TT |
8797 | if (strcmp (object_name, rs->finished_object) == 0 |
8798 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8799 | && offset == rs->finished_offset) | |
0876f84a DJ |
8800 | return 0; |
8801 | ||
8802 | /* Otherwise, we're now reading something different. Discard | |
8803 | the cache. */ | |
8e88304f TT |
8804 | xfree (rs->finished_object); |
8805 | xfree (rs->finished_annex); | |
8806 | rs->finished_object = NULL; | |
8807 | rs->finished_annex = NULL; | |
0876f84a DJ |
8808 | } |
8809 | ||
8810 | /* Request only enough to fit in a single packet. The actual data | |
8811 | may not, since we don't know how much of it will need to be escaped; | |
8812 | the target is free to respond with slightly less data. We subtract | |
8813 | five to account for the response type and the protocol frame. */ | |
8814 | n = min (get_remote_packet_size () - 5, len); | |
8815 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8816 | object_name, annex ? annex : "", | |
8817 | phex_nz (offset, sizeof offset), | |
8818 | phex_nz (n, sizeof n)); | |
8819 | i = putpkt (rs->buf); | |
8820 | if (i < 0) | |
2ed4b548 | 8821 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8822 | |
8823 | rs->buf[0] = '\0'; | |
8824 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8825 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8826 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8827 | |
8828 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8829 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8830 | ||
8831 | /* 'm' means there is (or at least might be) more data after this | |
8832 | batch. That does not make sense unless there's at least one byte | |
8833 | of data in this reply. */ | |
8834 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8835 | error (_("Remote qXfer reply contained no data.")); | |
8836 | ||
8837 | /* Got some data. */ | |
bc20a4af PA |
8838 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8839 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8840 | |
8841 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8842 | or possibly empty. If we have the final block of a non-empty |
8843 | object, record this fact to bypass a subsequent partial read. */ | |
8844 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8845 | { |
8e88304f TT |
8846 | rs->finished_object = xstrdup (object_name); |
8847 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8848 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8849 | } |
8850 | ||
8851 | return i; | |
8852 | } | |
8853 | ||
1e3ff5ad | 8854 | static LONGEST |
4b8a223f | 8855 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 8856 | const char *annex, gdb_byte *readbuf, |
b55e14c7 | 8857 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len) |
c906108c | 8858 | { |
82f73884 | 8859 | struct remote_state *rs; |
c906108c | 8860 | int i; |
6d820c5c | 8861 | char *p2; |
1e3ff5ad | 8862 | char query_type; |
c906108c | 8863 | |
e6e4e701 | 8864 | set_remote_traceframe (); |
82f73884 PA |
8865 | set_general_thread (inferior_ptid); |
8866 | ||
8867 | rs = get_remote_state (); | |
8868 | ||
b2182ed2 | 8869 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8870 | if (object == TARGET_OBJECT_MEMORY) |
8871 | { | |
00d84524 | 8872 | LONGEST xfered; |
21e3b9b9 | 8873 | |
2d717e4f DJ |
8874 | /* If the remote target is connected but not running, we should |
8875 | pass this request down to a lower stratum (e.g. the executable | |
8876 | file). */ | |
8877 | if (!target_has_execution) | |
8878 | return 0; | |
8879 | ||
21e3b9b9 | 8880 | if (writebuf != NULL) |
b2182ed2 | 8881 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8882 | else |
b2182ed2 | 8883 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 | 8884 | |
00d84524 | 8885 | return xfered; |
21e3b9b9 DJ |
8886 | } |
8887 | ||
0df8b418 | 8888 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8889 | if (object == TARGET_OBJECT_SPU) |
8890 | { | |
8891 | if (readbuf) | |
8892 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8893 | &remote_protocol_packets | |
8894 | [PACKET_qXfer_spu_read]); | |
8895 | else | |
8896 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8897 | &remote_protocol_packets | |
8898 | [PACKET_qXfer_spu_write]); | |
8899 | } | |
8900 | ||
4aa995e1 PA |
8901 | /* Handle extra signal info using qxfer packets. */ |
8902 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8903 | { | |
8904 | if (readbuf) | |
8905 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8906 | &remote_protocol_packets | |
8907 | [PACKET_qXfer_siginfo_read]); | |
8908 | else | |
3e43a32a MS |
8909 | return remote_write_qxfer (ops, "siginfo", annex, |
8910 | writebuf, offset, len, | |
4aa995e1 PA |
8911 | &remote_protocol_packets |
8912 | [PACKET_qXfer_siginfo_write]); | |
8913 | } | |
8914 | ||
0fb4aa4b PA |
8915 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8916 | { | |
8917 | if (readbuf) | |
3e43a32a MS |
8918 | return remote_read_qxfer (ops, "statictrace", annex, |
8919 | readbuf, offset, len, | |
0fb4aa4b PA |
8920 | &remote_protocol_packets |
8921 | [PACKET_qXfer_statictrace_read]); | |
8922 | else | |
2ed4b548 | 8923 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
8924 | } |
8925 | ||
a76d924d DJ |
8926 | /* Only handle flash writes. */ |
8927 | if (writebuf != NULL) | |
8928 | { | |
8929 | LONGEST xfered; | |
8930 | ||
8931 | switch (object) | |
8932 | { | |
8933 | case TARGET_OBJECT_FLASH: | |
00d84524 | 8934 | return remote_flash_write (ops, offset, len, writebuf); |
a76d924d DJ |
8935 | |
8936 | default: | |
2ed4b548 | 8937 | return TARGET_XFER_E_IO; |
a76d924d DJ |
8938 | } |
8939 | } | |
4b8a223f | 8940 | |
1e3ff5ad AC |
8941 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8942 | objects!!! Instead specify new query packets. */ | |
8943 | switch (object) | |
c906108c | 8944 | { |
1e3ff5ad AC |
8945 | case TARGET_OBJECT_AVR: |
8946 | query_type = 'R'; | |
8947 | break; | |
802188a7 RM |
8948 | |
8949 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8950 | gdb_assert (annex == NULL); |
8951 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8952 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8953 | |
23181151 DJ |
8954 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8955 | return remote_read_qxfer | |
8956 | (ops, "features", annex, readbuf, offset, len, | |
8957 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8958 | ||
cfa9d6d9 DJ |
8959 | case TARGET_OBJECT_LIBRARIES: |
8960 | return remote_read_qxfer | |
8961 | (ops, "libraries", annex, readbuf, offset, len, | |
8962 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8963 | ||
2268b414 JK |
8964 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8965 | return remote_read_qxfer | |
8966 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8967 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8968 | ||
fd79ecee DJ |
8969 | case TARGET_OBJECT_MEMORY_MAP: |
8970 | gdb_assert (annex == NULL); | |
8971 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8972 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8973 | ||
07e059b5 VP |
8974 | case TARGET_OBJECT_OSDATA: |
8975 | /* Should only get here if we're connected. */ | |
5d93a237 | 8976 | gdb_assert (rs->remote_desc); |
07e059b5 VP |
8977 | return remote_read_qxfer |
8978 | (ops, "osdata", annex, readbuf, offset, len, | |
8979 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8980 | ||
dc146f7c VP |
8981 | case TARGET_OBJECT_THREADS: |
8982 | gdb_assert (annex == NULL); | |
8983 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8984 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8985 | ||
b3b9301e PA |
8986 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8987 | gdb_assert (annex == NULL); | |
8988 | return remote_read_qxfer | |
8989 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8990 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8991 | |
8992 | case TARGET_OBJECT_FDPIC: | |
8993 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8994 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8995 | |
8996 | case TARGET_OBJECT_OPENVMS_UIB: | |
8997 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8998 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8999 | ||
9accd112 MM |
9000 | case TARGET_OBJECT_BTRACE: |
9001 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9002 | &remote_protocol_packets[PACKET_qXfer_btrace]); | |
9003 | ||
1e3ff5ad | 9004 | default: |
2ed4b548 | 9005 | return TARGET_XFER_E_IO; |
c906108c SS |
9006 | } |
9007 | ||
4b8a223f | 9008 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 9009 | buffer size. */ |
4b8a223f | 9010 | if (offset == 0 && len == 0) |
ea9c271d | 9011 | return (get_remote_packet_size ()); |
0df8b418 | 9012 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9013 | large enough let the caller deal with it. */ |
ea9c271d | 9014 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9015 | return TARGET_XFER_E_IO; |
ea9c271d | 9016 | len = get_remote_packet_size (); |
1e3ff5ad | 9017 | |
23860348 | 9018 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9019 | if (!rs->remote_desc) |
8a3fe4f8 | 9020 | error (_("remote query is only available after target open")); |
c906108c | 9021 | |
1e3ff5ad | 9022 | gdb_assert (annex != NULL); |
4b8a223f | 9023 | gdb_assert (readbuf != NULL); |
c906108c | 9024 | |
6d820c5c | 9025 | p2 = rs->buf; |
c906108c SS |
9026 | *p2++ = 'q'; |
9027 | *p2++ = query_type; | |
9028 | ||
23860348 MS |
9029 | /* We used one buffer char for the remote protocol q command and |
9030 | another for the query type. As the remote protocol encapsulation | |
9031 | uses 4 chars plus one extra in case we are debugging | |
9032 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9033 | string. */ | |
c906108c | 9034 | i = 0; |
ea9c271d | 9035 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9036 | { |
1e3ff5ad AC |
9037 | /* Bad caller may have sent forbidden characters. */ |
9038 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9039 | *p2++ = annex[i]; | |
c906108c SS |
9040 | i++; |
9041 | } | |
1e3ff5ad AC |
9042 | *p2 = '\0'; |
9043 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9044 | |
6d820c5c | 9045 | i = putpkt (rs->buf); |
c5aa993b | 9046 | if (i < 0) |
2ed4b548 | 9047 | return TARGET_XFER_E_IO; |
c906108c | 9048 | |
6d820c5c DJ |
9049 | getpkt (&rs->buf, &rs->buf_size, 0); |
9050 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9051 | |
cfd77fa1 | 9052 | return strlen ((char *) readbuf); |
c906108c SS |
9053 | } |
9054 | ||
08388c79 DE |
9055 | static int |
9056 | remote_search_memory (struct target_ops* ops, | |
9057 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9058 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9059 | CORE_ADDR *found_addrp) | |
9060 | { | |
f5656ead | 9061 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9062 | struct remote_state *rs = get_remote_state (); |
9063 | int max_size = get_memory_write_packet_size (); | |
9064 | struct packet_config *packet = | |
9065 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9066 | /* Number of packet bytes used to encode the pattern; |
9067 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9068 | int escaped_pattern_len; |
0df8b418 | 9069 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9070 | int used_pattern_len; |
9071 | int i; | |
9072 | int found; | |
9073 | ULONGEST found_addr; | |
9074 | ||
9075 | /* Don't go to the target if we don't have to. | |
9076 | This is done before checking packet->support to avoid the possibility that | |
9077 | a success for this edge case means the facility works in general. */ | |
9078 | if (pattern_len > search_space_len) | |
9079 | return 0; | |
9080 | if (pattern_len == 0) | |
9081 | { | |
9082 | *found_addrp = start_addr; | |
9083 | return 1; | |
9084 | } | |
9085 | ||
9086 | /* If we already know the packet isn't supported, fall back to the simple | |
9087 | way of searching memory. */ | |
9088 | ||
9089 | if (packet->support == PACKET_DISABLE) | |
9090 | { | |
9091 | /* Target doesn't provided special support, fall back and use the | |
9092 | standard support (copy memory and do the search here). */ | |
9093 | return simple_search_memory (ops, start_addr, search_space_len, | |
9094 | pattern, pattern_len, found_addrp); | |
9095 | } | |
9096 | ||
28439a30 PA |
9097 | /* Make sure the remote is pointing at the right process. */ |
9098 | set_general_process (); | |
9099 | ||
08388c79 DE |
9100 | /* Insert header. */ |
9101 | i = snprintf (rs->buf, max_size, | |
9102 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9103 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9104 | phex_nz (search_space_len, sizeof (search_space_len))); |
9105 | max_size -= (i + 1); | |
9106 | ||
9107 | /* Escape as much data as fits into rs->buf. */ | |
9108 | escaped_pattern_len = | |
bc20a4af | 9109 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9110 | &used_pattern_len, max_size); |
9111 | ||
9112 | /* Bail if the pattern is too large. */ | |
9113 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9114 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9115 | |
9116 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9117 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9118 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9119 | { | |
9120 | /* The request may not have worked because the command is not | |
9121 | supported. If so, fall back to the simple way. */ | |
9122 | if (packet->support == PACKET_DISABLE) | |
9123 | { | |
9124 | return simple_search_memory (ops, start_addr, search_space_len, | |
9125 | pattern, pattern_len, found_addrp); | |
9126 | } | |
9127 | return -1; | |
9128 | } | |
9129 | ||
9130 | if (rs->buf[0] == '0') | |
9131 | found = 0; | |
9132 | else if (rs->buf[0] == '1') | |
9133 | { | |
9134 | found = 1; | |
9135 | if (rs->buf[1] != ',') | |
10e0fa18 | 9136 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9137 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9138 | *found_addrp = found_addr; | |
9139 | } | |
9140 | else | |
10e0fa18 | 9141 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9142 | |
9143 | return found; | |
9144 | } | |
9145 | ||
96baa820 JM |
9146 | static void |
9147 | remote_rcmd (char *command, | |
d9fcf2fb | 9148 | struct ui_file *outbuf) |
96baa820 | 9149 | { |
d01949b6 | 9150 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9151 | char *p = rs->buf; |
96baa820 | 9152 | |
5d93a237 | 9153 | if (!rs->remote_desc) |
8a3fe4f8 | 9154 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9155 | |
23860348 | 9156 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9157 | if (command == NULL) |
9158 | command = ""; | |
9159 | ||
23860348 | 9160 | /* The query prefix. */ |
2e9f7625 DJ |
9161 | strcpy (rs->buf, "qRcmd,"); |
9162 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9163 | |
3e43a32a MS |
9164 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9165 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9166 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9167 | |
23860348 | 9168 | /* Encode the actual command. */ |
cfd77fa1 | 9169 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 9170 | |
6d820c5c | 9171 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9172 | error (_("Communication problem with target.")); |
96baa820 JM |
9173 | |
9174 | /* get/display the response */ | |
9175 | while (1) | |
9176 | { | |
2e9f7625 DJ |
9177 | char *buf; |
9178 | ||
00bf0b85 | 9179 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9180 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9181 | rs->buf[0] = '\0'; |
5b37825d PW |
9182 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9183 | { | |
9184 | /* Timeout. Continue to (try to) read responses. | |
9185 | This is better than stopping with an error, assuming the stub | |
9186 | is still executing the (long) monitor command. | |
9187 | If needed, the user can interrupt gdb using C-c, obtaining | |
9188 | an effect similar to stop on timeout. */ | |
9189 | continue; | |
9190 | } | |
2e9f7625 | 9191 | buf = rs->buf; |
96baa820 | 9192 | if (buf[0] == '\0') |
8a3fe4f8 | 9193 | error (_("Target does not support this command.")); |
96baa820 JM |
9194 | if (buf[0] == 'O' && buf[1] != 'K') |
9195 | { | |
23860348 | 9196 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9197 | continue; |
9198 | } | |
9199 | if (strcmp (buf, "OK") == 0) | |
9200 | break; | |
7be570e7 JM |
9201 | if (strlen (buf) == 3 && buf[0] == 'E' |
9202 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9203 | { | |
8a3fe4f8 | 9204 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9205 | } |
96baa820 JM |
9206 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9207 | { | |
9208 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9209 | |
96baa820 JM |
9210 | fputc_unfiltered (c, outbuf); |
9211 | } | |
9212 | break; | |
9213 | } | |
9214 | } | |
9215 | ||
fd79ecee DJ |
9216 | static VEC(mem_region_s) * |
9217 | remote_memory_map (struct target_ops *ops) | |
9218 | { | |
9219 | VEC(mem_region_s) *result = NULL; | |
9220 | char *text = target_read_stralloc (¤t_target, | |
9221 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9222 | ||
9223 | if (text) | |
9224 | { | |
9225 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9226 | |
fd79ecee DJ |
9227 | result = parse_memory_map (text); |
9228 | do_cleanups (back_to); | |
9229 | } | |
9230 | ||
9231 | return result; | |
9232 | } | |
9233 | ||
c906108c | 9234 | static void |
fba45db2 | 9235 | packet_command (char *args, int from_tty) |
c906108c | 9236 | { |
d01949b6 | 9237 | struct remote_state *rs = get_remote_state (); |
c906108c | 9238 | |
5d93a237 | 9239 | if (!rs->remote_desc) |
8a3fe4f8 | 9240 | error (_("command can only be used with remote target")); |
c906108c | 9241 | |
c5aa993b | 9242 | if (!args) |
8a3fe4f8 | 9243 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9244 | |
9245 | puts_filtered ("sending: "); | |
9246 | print_packet (args); | |
9247 | puts_filtered ("\n"); | |
9248 | putpkt (args); | |
9249 | ||
6d820c5c | 9250 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9251 | puts_filtered ("received: "); |
6d820c5c | 9252 | print_packet (rs->buf); |
c906108c SS |
9253 | puts_filtered ("\n"); |
9254 | } | |
9255 | ||
9256 | #if 0 | |
23860348 | 9257 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9258 | |
a14ed312 | 9259 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9260 | |
a14ed312 | 9261 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9262 | |
a14ed312 | 9263 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9264 | |
a14ed312 | 9265 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9266 | |
23860348 | 9267 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9268 | |
a14ed312 | 9269 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9270 | |
23860348 | 9271 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9272 | |
a14ed312 | 9273 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9274 | |
a14ed312 | 9275 | static void init_remote_threadtests (void); |
c906108c | 9276 | |
23860348 | 9277 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9278 | |
9279 | static void | |
fba45db2 | 9280 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9281 | { |
9282 | int sample_thread = SAMPLE_THREAD; | |
9283 | ||
a3f17187 | 9284 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9285 | set_general_thread (sample_thread); |
c906108c SS |
9286 | } |
9287 | ||
9288 | ||
9289 | static void | |
fba45db2 | 9290 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9291 | { |
9292 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
9293 | int pid = ptid_get_pid (inferior_ptid); |
9294 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 9295 | |
79d7f229 | 9296 | if (remote_thread_alive (ptid)) |
c906108c SS |
9297 | printf_filtered ("PASS: Thread alive test\n"); |
9298 | else | |
9299 | printf_filtered ("FAIL: Thread alive test\n"); | |
9300 | } | |
9301 | ||
23860348 | 9302 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9303 | |
9304 | void | |
fba45db2 | 9305 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9306 | { |
9307 | char hexid[20]; | |
9308 | ||
23860348 | 9309 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9310 | hexid[16] = 0; |
9311 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9312 | } | |
9313 | ||
9314 | static void | |
fba45db2 | 9315 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9316 | { |
9317 | int startflag = 1; | |
9318 | threadref nextthread; | |
9319 | int done, result_count; | |
9320 | threadref threadlist[3]; | |
9321 | ||
9322 | printf_filtered ("Remote Threadlist test\n"); | |
9323 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9324 | &result_count, &threadlist[0])) | |
9325 | printf_filtered ("FAIL: threadlist test\n"); | |
9326 | else | |
9327 | { | |
9328 | threadref *scan = threadlist; | |
9329 | threadref *limit = scan + result_count; | |
9330 | ||
9331 | while (scan < limit) | |
9332 | output_threadid (" thread ", scan++); | |
9333 | } | |
9334 | } | |
9335 | ||
9336 | void | |
fba45db2 | 9337 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9338 | { |
9339 | output_threadid ("Threadid: ", &info->threadid); | |
9340 | printf_filtered ("Name: %s\n ", info->shortname); | |
9341 | printf_filtered ("State: %s\n", info->display); | |
9342 | printf_filtered ("other: %s\n\n", info->more_display); | |
9343 | } | |
9344 | ||
9345 | int | |
fba45db2 | 9346 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9347 | { |
9348 | int result; | |
9349 | int set; | |
9350 | struct gdb_ext_thread_info threadinfo; | |
9351 | ||
9352 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9353 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9354 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9355 | display_thread_info (&threadinfo); | |
9356 | return result; | |
9357 | } | |
9358 | ||
9359 | static void | |
fba45db2 | 9360 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9361 | { |
9362 | int athread = SAMPLE_THREAD; | |
9363 | threadref thread; | |
9364 | int set; | |
9365 | ||
9366 | int_to_threadref (&thread, athread); | |
9367 | printf_filtered ("Remote Threadinfo test\n"); | |
9368 | if (!get_and_display_threadinfo (&thread)) | |
9369 | printf_filtered ("FAIL cannot get thread info\n"); | |
9370 | } | |
9371 | ||
9372 | static int | |
fba45db2 | 9373 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9374 | { |
9375 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9376 | return get_and_display_threadinfo (ref); | |
9377 | } | |
9378 | ||
9379 | static void | |
fba45db2 | 9380 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9381 | { |
9382 | printf_filtered ("Remote Threadlist update test\n"); | |
9383 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9384 | } | |
9385 | ||
9386 | static void | |
9387 | init_remote_threadtests (void) | |
9388 | { | |
3e43a32a MS |
9389 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9390 | _("Fetch and print the remote list of " | |
9391 | "thread identifiers, one pkt only")); | |
c906108c | 9392 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9393 | _("Fetch and display info about one thread")); |
c906108c | 9394 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9395 | _("Test setting to a different thread")); |
c906108c | 9396 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9397 | _("Iterate through updating all remote thread info")); |
c906108c | 9398 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9399 | _(" Remote thread alive test ")); |
c906108c SS |
9400 | } |
9401 | ||
9402 | #endif /* 0 */ | |
9403 | ||
f3fb8c85 MS |
9404 | /* Convert a thread ID to a string. Returns the string in a static |
9405 | buffer. */ | |
9406 | ||
9407 | static char * | |
117de6a9 | 9408 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9409 | { |
79d7f229 | 9410 | static char buf[64]; |
82f73884 | 9411 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9412 | |
7cee1e54 PA |
9413 | if (ptid_equal (ptid, null_ptid)) |
9414 | return normal_pid_to_str (ptid); | |
9415 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9416 | { |
9417 | /* Printing an inferior target id. */ | |
9418 | ||
9419 | /* When multi-process extensions are off, there's no way in the | |
9420 | remote protocol to know the remote process id, if there's any | |
9421 | at all. There's one exception --- when we're connected with | |
9422 | target extended-remote, and we manually attached to a process | |
9423 | with "attach PID". We don't record anywhere a flag that | |
9424 | allows us to distinguish that case from the case of | |
9425 | connecting with extended-remote and the stub already being | |
9426 | attached to a process, and reporting yes to qAttached, hence | |
9427 | no smart special casing here. */ | |
9428 | if (!remote_multi_process_p (rs)) | |
9429 | { | |
9430 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9431 | return buf; | |
9432 | } | |
9433 | ||
9434 | return normal_pid_to_str (ptid); | |
82f73884 | 9435 | } |
ecd0ada5 | 9436 | else |
79d7f229 | 9437 | { |
ecd0ada5 PA |
9438 | if (ptid_equal (magic_null_ptid, ptid)) |
9439 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9440 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9441 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9442 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9443 | else | |
9444 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9445 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9446 | return buf; |
9447 | } | |
f3fb8c85 MS |
9448 | } |
9449 | ||
38691318 KB |
9450 | /* Get the address of the thread local variable in OBJFILE which is |
9451 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9452 | ||
9453 | static CORE_ADDR | |
117de6a9 PA |
9454 | remote_get_thread_local_address (struct target_ops *ops, |
9455 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9456 | { |
444abaca | 9457 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9458 | { |
9459 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9460 | char *p = rs->buf; |
82f73884 | 9461 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9462 | enum packet_result result; |
38691318 KB |
9463 | |
9464 | strcpy (p, "qGetTLSAddr:"); | |
9465 | p += strlen (p); | |
82f73884 | 9466 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9467 | *p++ = ','; |
9468 | p += hexnumstr (p, offset); | |
9469 | *p++ = ','; | |
9470 | p += hexnumstr (p, lm); | |
9471 | *p++ = '\0'; | |
9472 | ||
6d820c5c DJ |
9473 | putpkt (rs->buf); |
9474 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9475 | result = packet_ok (rs->buf, |
9476 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9477 | if (result == PACKET_OK) |
38691318 KB |
9478 | { |
9479 | ULONGEST result; | |
9480 | ||
6d820c5c | 9481 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9482 | return result; |
9483 | } | |
571dd617 | 9484 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9485 | throw_error (TLS_GENERIC_ERROR, |
9486 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9487 | else |
109c3e39 AC |
9488 | throw_error (TLS_GENERIC_ERROR, |
9489 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9490 | } |
9491 | else | |
109c3e39 AC |
9492 | throw_error (TLS_GENERIC_ERROR, |
9493 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9494 | /* Not reached. */ |
9495 | return 0; | |
9496 | } | |
9497 | ||
711e434b PM |
9498 | /* Provide thread local base, i.e. Thread Information Block address. |
9499 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9500 | ||
70221824 | 9501 | static int |
711e434b PM |
9502 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9503 | { | |
9504 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9505 | { | |
9506 | struct remote_state *rs = get_remote_state (); | |
9507 | char *p = rs->buf; | |
9508 | char *endp = rs->buf + get_remote_packet_size (); | |
9509 | enum packet_result result; | |
9510 | ||
9511 | strcpy (p, "qGetTIBAddr:"); | |
9512 | p += strlen (p); | |
9513 | p = write_ptid (p, endp, ptid); | |
9514 | *p++ = '\0'; | |
9515 | ||
9516 | putpkt (rs->buf); | |
9517 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9518 | result = packet_ok (rs->buf, | |
9519 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9520 | if (result == PACKET_OK) | |
9521 | { | |
9522 | ULONGEST result; | |
9523 | ||
9524 | unpack_varlen_hex (rs->buf, &result); | |
9525 | if (addr) | |
9526 | *addr = (CORE_ADDR) result; | |
9527 | return 1; | |
9528 | } | |
9529 | else if (result == PACKET_UNKNOWN) | |
9530 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9531 | else | |
9532 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9533 | } | |
9534 | else | |
9535 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9536 | /* Not reached. */ | |
9537 | return 0; | |
9538 | } | |
9539 | ||
29709017 DJ |
9540 | /* Support for inferring a target description based on the current |
9541 | architecture and the size of a 'g' packet. While the 'g' packet | |
9542 | can have any size (since optional registers can be left off the | |
9543 | end), some sizes are easily recognizable given knowledge of the | |
9544 | approximate architecture. */ | |
9545 | ||
9546 | struct remote_g_packet_guess | |
9547 | { | |
9548 | int bytes; | |
9549 | const struct target_desc *tdesc; | |
9550 | }; | |
9551 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9552 | DEF_VEC_O(remote_g_packet_guess_s); | |
9553 | ||
9554 | struct remote_g_packet_data | |
9555 | { | |
9556 | VEC(remote_g_packet_guess_s) *guesses; | |
9557 | }; | |
9558 | ||
9559 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9560 | ||
9561 | static void * | |
9562 | remote_g_packet_data_init (struct obstack *obstack) | |
9563 | { | |
9564 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9565 | } | |
9566 | ||
9567 | void | |
9568 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9569 | const struct target_desc *tdesc) | |
9570 | { | |
9571 | struct remote_g_packet_data *data | |
9572 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9573 | struct remote_g_packet_guess new_guess, *guess; | |
9574 | int ix; | |
9575 | ||
9576 | gdb_assert (tdesc != NULL); | |
9577 | ||
9578 | for (ix = 0; | |
9579 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9580 | ix++) | |
9581 | if (guess->bytes == bytes) | |
9582 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9583 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9584 | bytes); |
9585 | ||
9586 | new_guess.bytes = bytes; | |
9587 | new_guess.tdesc = tdesc; | |
9588 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9589 | } | |
9590 | ||
d962ef82 DJ |
9591 | /* Return 1 if remote_read_description would do anything on this target |
9592 | and architecture, 0 otherwise. */ | |
9593 | ||
9594 | static int | |
9595 | remote_read_description_p (struct target_ops *target) | |
9596 | { | |
9597 | struct remote_g_packet_data *data | |
f5656ead | 9598 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9599 | |
9600 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9601 | return 1; | |
9602 | ||
9603 | return 0; | |
9604 | } | |
9605 | ||
29709017 DJ |
9606 | static const struct target_desc * |
9607 | remote_read_description (struct target_ops *target) | |
9608 | { | |
9609 | struct remote_g_packet_data *data | |
f5656ead | 9610 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9611 | |
d962ef82 DJ |
9612 | /* Do not try this during initial connection, when we do not know |
9613 | whether there is a running but stopped thread. */ | |
9614 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9615 | return NULL; | |
9616 | ||
29709017 DJ |
9617 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9618 | { | |
9619 | struct remote_g_packet_guess *guess; | |
9620 | int ix; | |
9621 | int bytes = send_g_packet (); | |
9622 | ||
9623 | for (ix = 0; | |
9624 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9625 | ix++) | |
9626 | if (guess->bytes == bytes) | |
9627 | return guess->tdesc; | |
9628 | ||
9629 | /* We discard the g packet. A minor optimization would be to | |
9630 | hold on to it, and fill the register cache once we have selected | |
9631 | an architecture, but it's too tricky to do safely. */ | |
9632 | } | |
9633 | ||
9634 | return NULL; | |
9635 | } | |
9636 | ||
a6b151f1 DJ |
9637 | /* Remote file transfer support. This is host-initiated I/O, not |
9638 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9639 | ||
9640 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9641 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9642 | decrease *LEFT. Otherwise raise an error. */ | |
9643 | ||
9644 | static void | |
9645 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9646 | { | |
9647 | int len = strlen (string); | |
9648 | ||
9649 | if (len > *left) | |
9650 | error (_("Packet too long for target.")); | |
9651 | ||
9652 | memcpy (*buffer, string, len); | |
9653 | *buffer += len; | |
9654 | *left -= len; | |
9655 | ||
9656 | /* NUL-terminate the buffer as a convenience, if there is | |
9657 | room. */ | |
9658 | if (*left) | |
9659 | **buffer = '\0'; | |
9660 | } | |
9661 | ||
9662 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9663 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9664 | decrease *LEFT. Otherwise raise an error. */ | |
9665 | ||
9666 | static void | |
9667 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9668 | int len) | |
9669 | { | |
9670 | if (2 * len > *left) | |
9671 | error (_("Packet too long for target.")); | |
9672 | ||
9673 | bin2hex (bytes, *buffer, len); | |
9674 | *buffer += 2 * len; | |
9675 | *left -= 2 * len; | |
9676 | ||
9677 | /* NUL-terminate the buffer as a convenience, if there is | |
9678 | room. */ | |
9679 | if (*left) | |
9680 | **buffer = '\0'; | |
9681 | } | |
9682 | ||
9683 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9684 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9685 | decrease *LEFT. Otherwise raise an error. */ | |
9686 | ||
9687 | static void | |
9688 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9689 | { | |
9690 | int len = hexnumlen (value); | |
9691 | ||
9692 | if (len > *left) | |
9693 | error (_("Packet too long for target.")); | |
9694 | ||
9695 | hexnumstr (*buffer, value); | |
9696 | *buffer += len; | |
9697 | *left -= len; | |
9698 | ||
9699 | /* NUL-terminate the buffer as a convenience, if there is | |
9700 | room. */ | |
9701 | if (*left) | |
9702 | **buffer = '\0'; | |
9703 | } | |
9704 | ||
9705 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9706 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9707 | was included, and *ATTACHMENT to point to the start of the annex | |
9708 | if any. The length of the packet isn't needed here; there may | |
9709 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9710 | ||
9711 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9712 | -1 is returned, the other variables may not be initialized. */ | |
9713 | ||
9714 | static int | |
9715 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9716 | int *remote_errno, char **attachment) | |
9717 | { | |
9718 | char *p, *p2; | |
9719 | ||
9720 | *remote_errno = 0; | |
9721 | *attachment = NULL; | |
9722 | ||
9723 | if (buffer[0] != 'F') | |
9724 | return -1; | |
9725 | ||
9726 | errno = 0; | |
9727 | *retcode = strtol (&buffer[1], &p, 16); | |
9728 | if (errno != 0 || p == &buffer[1]) | |
9729 | return -1; | |
9730 | ||
9731 | /* Check for ",errno". */ | |
9732 | if (*p == ',') | |
9733 | { | |
9734 | errno = 0; | |
9735 | *remote_errno = strtol (p + 1, &p2, 16); | |
9736 | if (errno != 0 || p + 1 == p2) | |
9737 | return -1; | |
9738 | p = p2; | |
9739 | } | |
9740 | ||
9741 | /* Check for ";attachment". If there is no attachment, the | |
9742 | packet should end here. */ | |
9743 | if (*p == ';') | |
9744 | { | |
9745 | *attachment = p + 1; | |
9746 | return 0; | |
9747 | } | |
9748 | else if (*p == '\0') | |
9749 | return 0; | |
9750 | else | |
9751 | return -1; | |
9752 | } | |
9753 | ||
9754 | /* Send a prepared I/O packet to the target and read its response. | |
9755 | The prepared packet is in the global RS->BUF before this function | |
9756 | is called, and the answer is there when we return. | |
9757 | ||
9758 | COMMAND_BYTES is the length of the request to send, which may include | |
9759 | binary data. WHICH_PACKET is the packet configuration to check | |
9760 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9761 | is set to the error number and -1 is returned. Otherwise the value | |
9762 | returned by the function is returned. | |
9763 | ||
9764 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9765 | attachment is expected; an error will be reported if there's a | |
9766 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9767 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9768 | attachment's length. */ | |
9769 | ||
9770 | static int | |
9771 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9772 | int *remote_errno, char **attachment, | |
9773 | int *attachment_len) | |
9774 | { | |
9775 | struct remote_state *rs = get_remote_state (); | |
9776 | int ret, bytes_read; | |
9777 | char *attachment_tmp; | |
9778 | ||
5d93a237 | 9779 | if (!rs->remote_desc |
f1838a98 | 9780 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) |
a6b151f1 DJ |
9781 | { |
9782 | *remote_errno = FILEIO_ENOSYS; | |
9783 | return -1; | |
9784 | } | |
9785 | ||
9786 | putpkt_binary (rs->buf, command_bytes); | |
9787 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9788 | ||
9789 | /* If it timed out, something is wrong. Don't try to parse the | |
9790 | buffer. */ | |
9791 | if (bytes_read < 0) | |
9792 | { | |
9793 | *remote_errno = FILEIO_EINVAL; | |
9794 | return -1; | |
9795 | } | |
9796 | ||
9797 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9798 | { | |
9799 | case PACKET_ERROR: | |
9800 | *remote_errno = FILEIO_EINVAL; | |
9801 | return -1; | |
9802 | case PACKET_UNKNOWN: | |
9803 | *remote_errno = FILEIO_ENOSYS; | |
9804 | return -1; | |
9805 | case PACKET_OK: | |
9806 | break; | |
9807 | } | |
9808 | ||
9809 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9810 | &attachment_tmp)) | |
9811 | { | |
9812 | *remote_errno = FILEIO_EINVAL; | |
9813 | return -1; | |
9814 | } | |
9815 | ||
9816 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9817 | if ((attachment_tmp == NULL && attachment != NULL) | |
9818 | || (attachment_tmp != NULL && attachment == NULL)) | |
9819 | { | |
9820 | *remote_errno = FILEIO_EINVAL; | |
9821 | return -1; | |
9822 | } | |
9823 | ||
9824 | /* If an attachment was found, it must point into the packet buffer; | |
9825 | work out how many bytes there were. */ | |
9826 | if (attachment_tmp != NULL) | |
9827 | { | |
9828 | *attachment = attachment_tmp; | |
9829 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9830 | } | |
9831 | ||
9832 | return ret; | |
9833 | } | |
9834 | ||
9835 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9836 | remote file descriptor, or -1 if an error occurs (and set | |
9837 | *REMOTE_ERRNO). */ | |
9838 | ||
9839 | static int | |
9840 | remote_hostio_open (const char *filename, int flags, int mode, | |
9841 | int *remote_errno) | |
9842 | { | |
9843 | struct remote_state *rs = get_remote_state (); | |
9844 | char *p = rs->buf; | |
9845 | int left = get_remote_packet_size () - 1; | |
9846 | ||
9847 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9848 | ||
9849 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9850 | strlen (filename)); | |
9851 | remote_buffer_add_string (&p, &left, ","); | |
9852 | ||
9853 | remote_buffer_add_int (&p, &left, flags); | |
9854 | remote_buffer_add_string (&p, &left, ","); | |
9855 | ||
9856 | remote_buffer_add_int (&p, &left, mode); | |
9857 | ||
9858 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9859 | remote_errno, NULL, NULL); | |
9860 | } | |
9861 | ||
9862 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9863 | Return the number of bytes written, or -1 if an error occurs (and | |
9864 | set *REMOTE_ERRNO). */ | |
9865 | ||
9866 | static int | |
9867 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9868 | ULONGEST offset, int *remote_errno) | |
9869 | { | |
9870 | struct remote_state *rs = get_remote_state (); | |
9871 | char *p = rs->buf; | |
9872 | int left = get_remote_packet_size (); | |
9873 | int out_len; | |
9874 | ||
9875 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9876 | ||
9877 | remote_buffer_add_int (&p, &left, fd); | |
9878 | remote_buffer_add_string (&p, &left, ","); | |
9879 | ||
9880 | remote_buffer_add_int (&p, &left, offset); | |
9881 | remote_buffer_add_string (&p, &left, ","); | |
9882 | ||
bc20a4af | 9883 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9884 | get_remote_packet_size () - (p - rs->buf)); |
9885 | ||
9886 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9887 | remote_errno, NULL, NULL); | |
9888 | } | |
9889 | ||
9890 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9891 | Return the number of bytes read, or -1 if an error occurs (and | |
9892 | set *REMOTE_ERRNO). */ | |
9893 | ||
9894 | static int | |
9895 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9896 | ULONGEST offset, int *remote_errno) | |
9897 | { | |
9898 | struct remote_state *rs = get_remote_state (); | |
9899 | char *p = rs->buf; | |
9900 | char *attachment; | |
9901 | int left = get_remote_packet_size (); | |
9902 | int ret, attachment_len; | |
9903 | int read_len; | |
9904 | ||
9905 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9906 | ||
9907 | remote_buffer_add_int (&p, &left, fd); | |
9908 | remote_buffer_add_string (&p, &left, ","); | |
9909 | ||
9910 | remote_buffer_add_int (&p, &left, len); | |
9911 | remote_buffer_add_string (&p, &left, ","); | |
9912 | ||
9913 | remote_buffer_add_int (&p, &left, offset); | |
9914 | ||
9915 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9916 | remote_errno, &attachment, | |
9917 | &attachment_len); | |
9918 | ||
9919 | if (ret < 0) | |
9920 | return ret; | |
9921 | ||
bc20a4af | 9922 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9923 | read_buf, len); |
9924 | if (read_len != ret) | |
9925 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9926 | ||
9927 | return ret; | |
9928 | } | |
9929 | ||
9930 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9931 | (and set *REMOTE_ERRNO). */ | |
9932 | ||
9933 | static int | |
9934 | remote_hostio_close (int fd, int *remote_errno) | |
9935 | { | |
9936 | struct remote_state *rs = get_remote_state (); | |
9937 | char *p = rs->buf; | |
9938 | int left = get_remote_packet_size () - 1; | |
9939 | ||
9940 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9941 | ||
9942 | remote_buffer_add_int (&p, &left, fd); | |
9943 | ||
9944 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9945 | remote_errno, NULL, NULL); | |
9946 | } | |
9947 | ||
9948 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9949 | occurs (and set *REMOTE_ERRNO). */ | |
9950 | ||
9951 | static int | |
9952 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9953 | { | |
9954 | struct remote_state *rs = get_remote_state (); | |
9955 | char *p = rs->buf; | |
9956 | int left = get_remote_packet_size () - 1; | |
9957 | ||
9958 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9959 | ||
9960 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9961 | strlen (filename)); | |
9962 | ||
9963 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9964 | remote_errno, NULL, NULL); | |
9965 | } | |
9966 | ||
b9e7b9c3 UW |
9967 | /* Read value of symbolic link FILENAME on the remote target. Return |
9968 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9969 | occurs (and set *REMOTE_ERRNO). */ | |
9970 | ||
9971 | static char * | |
9972 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9973 | { | |
9974 | struct remote_state *rs = get_remote_state (); | |
9975 | char *p = rs->buf; | |
9976 | char *attachment; | |
9977 | int left = get_remote_packet_size (); | |
9978 | int len, attachment_len; | |
9979 | int read_len; | |
9980 | char *ret; | |
9981 | ||
9982 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9983 | ||
9984 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9985 | strlen (filename)); | |
9986 | ||
9987 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9988 | remote_errno, &attachment, | |
9989 | &attachment_len); | |
9990 | ||
9991 | if (len < 0) | |
9992 | return NULL; | |
9993 | ||
9994 | ret = xmalloc (len + 1); | |
9995 | ||
bc20a4af PA |
9996 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
9997 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
9998 | if (read_len != len) |
9999 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10000 | ||
10001 | ret[len] = '\0'; | |
10002 | return ret; | |
10003 | } | |
10004 | ||
a6b151f1 DJ |
10005 | static int |
10006 | remote_fileio_errno_to_host (int errnum) | |
10007 | { | |
10008 | switch (errnum) | |
10009 | { | |
10010 | case FILEIO_EPERM: | |
10011 | return EPERM; | |
10012 | case FILEIO_ENOENT: | |
10013 | return ENOENT; | |
10014 | case FILEIO_EINTR: | |
10015 | return EINTR; | |
10016 | case FILEIO_EIO: | |
10017 | return EIO; | |
10018 | case FILEIO_EBADF: | |
10019 | return EBADF; | |
10020 | case FILEIO_EACCES: | |
10021 | return EACCES; | |
10022 | case FILEIO_EFAULT: | |
10023 | return EFAULT; | |
10024 | case FILEIO_EBUSY: | |
10025 | return EBUSY; | |
10026 | case FILEIO_EEXIST: | |
10027 | return EEXIST; | |
10028 | case FILEIO_ENODEV: | |
10029 | return ENODEV; | |
10030 | case FILEIO_ENOTDIR: | |
10031 | return ENOTDIR; | |
10032 | case FILEIO_EISDIR: | |
10033 | return EISDIR; | |
10034 | case FILEIO_EINVAL: | |
10035 | return EINVAL; | |
10036 | case FILEIO_ENFILE: | |
10037 | return ENFILE; | |
10038 | case FILEIO_EMFILE: | |
10039 | return EMFILE; | |
10040 | case FILEIO_EFBIG: | |
10041 | return EFBIG; | |
10042 | case FILEIO_ENOSPC: | |
10043 | return ENOSPC; | |
10044 | case FILEIO_ESPIPE: | |
10045 | return ESPIPE; | |
10046 | case FILEIO_EROFS: | |
10047 | return EROFS; | |
10048 | case FILEIO_ENOSYS: | |
10049 | return ENOSYS; | |
10050 | case FILEIO_ENAMETOOLONG: | |
10051 | return ENAMETOOLONG; | |
10052 | } | |
10053 | return -1; | |
10054 | } | |
10055 | ||
10056 | static char * | |
10057 | remote_hostio_error (int errnum) | |
10058 | { | |
10059 | int host_error = remote_fileio_errno_to_host (errnum); | |
10060 | ||
10061 | if (host_error == -1) | |
10062 | error (_("Unknown remote I/O error %d"), errnum); | |
10063 | else | |
10064 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10065 | } | |
10066 | ||
a6b151f1 DJ |
10067 | static void |
10068 | remote_hostio_close_cleanup (void *opaque) | |
10069 | { | |
10070 | int fd = *(int *) opaque; | |
10071 | int remote_errno; | |
10072 | ||
10073 | remote_hostio_close (fd, &remote_errno); | |
10074 | } | |
10075 | ||
f1838a98 UW |
10076 | |
10077 | static void * | |
10078 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
10079 | { | |
10080 | const char *filename = bfd_get_filename (abfd); | |
10081 | int fd, remote_errno; | |
10082 | int *stream; | |
10083 | ||
10084 | gdb_assert (remote_filename_p (filename)); | |
10085 | ||
10086 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
10087 | if (fd == -1) | |
10088 | { | |
10089 | errno = remote_fileio_errno_to_host (remote_errno); | |
10090 | bfd_set_error (bfd_error_system_call); | |
10091 | return NULL; | |
10092 | } | |
10093 | ||
10094 | stream = xmalloc (sizeof (int)); | |
10095 | *stream = fd; | |
10096 | return stream; | |
10097 | } | |
10098 | ||
10099 | static int | |
10100 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
10101 | { | |
10102 | int fd = *(int *)stream; | |
10103 | int remote_errno; | |
10104 | ||
10105 | xfree (stream); | |
10106 | ||
10107 | /* Ignore errors on close; these may happen if the remote | |
10108 | connection was already torn down. */ | |
10109 | remote_hostio_close (fd, &remote_errno); | |
10110 | ||
39ed5604 JK |
10111 | /* Zero means success. */ |
10112 | return 0; | |
f1838a98 UW |
10113 | } |
10114 | ||
10115 | static file_ptr | |
10116 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
10117 | file_ptr nbytes, file_ptr offset) | |
10118 | { | |
10119 | int fd = *(int *)stream; | |
10120 | int remote_errno; | |
10121 | file_ptr pos, bytes; | |
10122 | ||
10123 | pos = 0; | |
10124 | while (nbytes > pos) | |
10125 | { | |
bc20a4af | 10126 | bytes = remote_hostio_pread (fd, (gdb_byte *) buf + pos, nbytes - pos, |
f1838a98 UW |
10127 | offset + pos, &remote_errno); |
10128 | if (bytes == 0) | |
10129 | /* Success, but no bytes, means end-of-file. */ | |
10130 | break; | |
10131 | if (bytes == -1) | |
10132 | { | |
10133 | errno = remote_fileio_errno_to_host (remote_errno); | |
10134 | bfd_set_error (bfd_error_system_call); | |
10135 | return -1; | |
10136 | } | |
10137 | ||
10138 | pos += bytes; | |
10139 | } | |
10140 | ||
10141 | return pos; | |
10142 | } | |
10143 | ||
10144 | static int | |
10145 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
10146 | { | |
10147 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
10148 | sb->st_size = INT_MAX; | |
10149 | return 0; | |
10150 | } | |
10151 | ||
10152 | int | |
10153 | remote_filename_p (const char *filename) | |
10154 | { | |
3736004f PA |
10155 | return strncmp (filename, |
10156 | REMOTE_SYSROOT_PREFIX, | |
10157 | sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0; | |
f1838a98 UW |
10158 | } |
10159 | ||
10160 | bfd * | |
10161 | remote_bfd_open (const char *remote_file, const char *target) | |
10162 | { | |
64c31149 TT |
10163 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
10164 | remote_bfd_iovec_open, NULL, | |
10165 | remote_bfd_iovec_pread, | |
10166 | remote_bfd_iovec_close, | |
10167 | remote_bfd_iovec_stat); | |
10168 | ||
a4453b7e | 10169 | return abfd; |
f1838a98 UW |
10170 | } |
10171 | ||
a6b151f1 DJ |
10172 | void |
10173 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10174 | { | |
10175 | struct cleanup *back_to, *close_cleanup; | |
10176 | int retcode, fd, remote_errno, bytes, io_size; | |
10177 | FILE *file; | |
10178 | gdb_byte *buffer; | |
10179 | int bytes_in_buffer; | |
10180 | int saw_eof; | |
10181 | ULONGEST offset; | |
5d93a237 | 10182 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10183 | |
5d93a237 | 10184 | if (!rs->remote_desc) |
a6b151f1 DJ |
10185 | error (_("command can only be used with remote target")); |
10186 | ||
614c279d | 10187 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10188 | if (file == NULL) |
10189 | perror_with_name (local_file); | |
7c8a8b04 | 10190 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10191 | |
10192 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
10193 | | FILEIO_O_TRUNC), | |
10194 | 0700, &remote_errno); | |
10195 | if (fd == -1) | |
10196 | remote_hostio_error (remote_errno); | |
10197 | ||
10198 | /* Send up to this many bytes at once. They won't all fit in the | |
10199 | remote packet limit, so we'll transfer slightly fewer. */ | |
10200 | io_size = get_remote_packet_size (); | |
10201 | buffer = xmalloc (io_size); | |
10202 | make_cleanup (xfree, buffer); | |
10203 | ||
10204 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10205 | ||
10206 | bytes_in_buffer = 0; | |
10207 | saw_eof = 0; | |
10208 | offset = 0; | |
10209 | while (bytes_in_buffer || !saw_eof) | |
10210 | { | |
10211 | if (!saw_eof) | |
10212 | { | |
3e43a32a MS |
10213 | bytes = fread (buffer + bytes_in_buffer, 1, |
10214 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10215 | file); |
10216 | if (bytes == 0) | |
10217 | { | |
10218 | if (ferror (file)) | |
10219 | error (_("Error reading %s."), local_file); | |
10220 | else | |
10221 | { | |
10222 | /* EOF. Unless there is something still in the | |
10223 | buffer from the last iteration, we are done. */ | |
10224 | saw_eof = 1; | |
10225 | if (bytes_in_buffer == 0) | |
10226 | break; | |
10227 | } | |
10228 | } | |
10229 | } | |
10230 | else | |
10231 | bytes = 0; | |
10232 | ||
10233 | bytes += bytes_in_buffer; | |
10234 | bytes_in_buffer = 0; | |
10235 | ||
3e43a32a MS |
10236 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
10237 | offset, &remote_errno); | |
a6b151f1 DJ |
10238 | |
10239 | if (retcode < 0) | |
10240 | remote_hostio_error (remote_errno); | |
10241 | else if (retcode == 0) | |
10242 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10243 | else if (retcode < bytes) | |
10244 | { | |
10245 | /* Short write. Save the rest of the read data for the next | |
10246 | write. */ | |
10247 | bytes_in_buffer = bytes - retcode; | |
10248 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10249 | } | |
10250 | ||
10251 | offset += retcode; | |
10252 | } | |
10253 | ||
10254 | discard_cleanups (close_cleanup); | |
10255 | if (remote_hostio_close (fd, &remote_errno)) | |
10256 | remote_hostio_error (remote_errno); | |
10257 | ||
10258 | if (from_tty) | |
10259 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10260 | do_cleanups (back_to); | |
10261 | } | |
10262 | ||
10263 | void | |
10264 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10265 | { | |
10266 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10267 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10268 | FILE *file; |
10269 | gdb_byte *buffer; | |
10270 | ULONGEST offset; | |
5d93a237 | 10271 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10272 | |
5d93a237 | 10273 | if (!rs->remote_desc) |
a6b151f1 DJ |
10274 | error (_("command can only be used with remote target")); |
10275 | ||
10276 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
10277 | if (fd == -1) | |
10278 | remote_hostio_error (remote_errno); | |
10279 | ||
614c279d | 10280 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10281 | if (file == NULL) |
10282 | perror_with_name (local_file); | |
7c8a8b04 | 10283 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10284 | |
10285 | /* Send up to this many bytes at once. They won't all fit in the | |
10286 | remote packet limit, so we'll transfer slightly fewer. */ | |
10287 | io_size = get_remote_packet_size (); | |
10288 | buffer = xmalloc (io_size); | |
10289 | make_cleanup (xfree, buffer); | |
10290 | ||
10291 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10292 | ||
10293 | offset = 0; | |
10294 | while (1) | |
10295 | { | |
10296 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
10297 | if (bytes == 0) | |
10298 | /* Success, but no bytes, means end-of-file. */ | |
10299 | break; | |
10300 | if (bytes == -1) | |
10301 | remote_hostio_error (remote_errno); | |
10302 | ||
10303 | offset += bytes; | |
10304 | ||
10305 | bytes = fwrite (buffer, 1, bytes, file); | |
10306 | if (bytes == 0) | |
10307 | perror_with_name (local_file); | |
10308 | } | |
10309 | ||
10310 | discard_cleanups (close_cleanup); | |
10311 | if (remote_hostio_close (fd, &remote_errno)) | |
10312 | remote_hostio_error (remote_errno); | |
10313 | ||
10314 | if (from_tty) | |
10315 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10316 | do_cleanups (back_to); | |
10317 | } | |
10318 | ||
10319 | void | |
10320 | remote_file_delete (const char *remote_file, int from_tty) | |
10321 | { | |
10322 | int retcode, remote_errno; | |
5d93a237 | 10323 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10324 | |
5d93a237 | 10325 | if (!rs->remote_desc) |
a6b151f1 DJ |
10326 | error (_("command can only be used with remote target")); |
10327 | ||
10328 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
10329 | if (retcode == -1) | |
10330 | remote_hostio_error (remote_errno); | |
10331 | ||
10332 | if (from_tty) | |
10333 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10334 | } | |
10335 | ||
10336 | static void | |
10337 | remote_put_command (char *args, int from_tty) | |
10338 | { | |
10339 | struct cleanup *back_to; | |
10340 | char **argv; | |
10341 | ||
d1a41061 PP |
10342 | if (args == NULL) |
10343 | error_no_arg (_("file to put")); | |
10344 | ||
10345 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10346 | back_to = make_cleanup_freeargv (argv); |
10347 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10348 | error (_("Invalid parameters to remote put")); | |
10349 | ||
10350 | remote_file_put (argv[0], argv[1], from_tty); | |
10351 | ||
10352 | do_cleanups (back_to); | |
10353 | } | |
10354 | ||
10355 | static void | |
10356 | remote_get_command (char *args, int from_tty) | |
10357 | { | |
10358 | struct cleanup *back_to; | |
10359 | char **argv; | |
10360 | ||
d1a41061 PP |
10361 | if (args == NULL) |
10362 | error_no_arg (_("file to get")); | |
10363 | ||
10364 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10365 | back_to = make_cleanup_freeargv (argv); |
10366 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10367 | error (_("Invalid parameters to remote get")); | |
10368 | ||
10369 | remote_file_get (argv[0], argv[1], from_tty); | |
10370 | ||
10371 | do_cleanups (back_to); | |
10372 | } | |
10373 | ||
10374 | static void | |
10375 | remote_delete_command (char *args, int from_tty) | |
10376 | { | |
10377 | struct cleanup *back_to; | |
10378 | char **argv; | |
10379 | ||
d1a41061 PP |
10380 | if (args == NULL) |
10381 | error_no_arg (_("file to delete")); | |
10382 | ||
10383 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10384 | back_to = make_cleanup_freeargv (argv); |
10385 | if (argv[0] == NULL || argv[1] != NULL) | |
10386 | error (_("Invalid parameters to remote delete")); | |
10387 | ||
10388 | remote_file_delete (argv[0], from_tty); | |
10389 | ||
10390 | do_cleanups (back_to); | |
10391 | } | |
10392 | ||
10393 | static void | |
10394 | remote_command (char *args, int from_tty) | |
10395 | { | |
10396 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10397 | } | |
10398 | ||
b2175913 MS |
10399 | static int |
10400 | remote_can_execute_reverse (void) | |
10401 | { | |
40ab02ce MS |
10402 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10403 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10404 | return 1; | |
10405 | else | |
10406 | return 0; | |
b2175913 MS |
10407 | } |
10408 | ||
74531fed PA |
10409 | static int |
10410 | remote_supports_non_stop (void) | |
10411 | { | |
10412 | return 1; | |
10413 | } | |
10414 | ||
03583c20 UW |
10415 | static int |
10416 | remote_supports_disable_randomization (void) | |
10417 | { | |
10418 | /* Only supported in extended mode. */ | |
10419 | return 0; | |
10420 | } | |
10421 | ||
8a305172 PA |
10422 | static int |
10423 | remote_supports_multi_process (void) | |
10424 | { | |
10425 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10426 | |
901f9912 UW |
10427 | /* Only extended-remote handles being attached to multiple |
10428 | processes, even though plain remote can use the multi-process | |
10429 | thread id extensions, so that GDB knows the target process's | |
10430 | PID. */ | |
10431 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10432 | } |
10433 | ||
70221824 | 10434 | static int |
782b2b07 SS |
10435 | remote_supports_cond_tracepoints (void) |
10436 | { | |
10437 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10438 | |
782b2b07 SS |
10439 | return rs->cond_tracepoints; |
10440 | } | |
10441 | ||
3788aec7 LM |
10442 | static int |
10443 | remote_supports_cond_breakpoints (void) | |
10444 | { | |
10445 | struct remote_state *rs = get_remote_state (); | |
10446 | ||
10447 | return rs->cond_breakpoints; | |
10448 | } | |
10449 | ||
70221824 | 10450 | static int |
7a697b8d SS |
10451 | remote_supports_fast_tracepoints (void) |
10452 | { | |
10453 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10454 | |
7a697b8d SS |
10455 | return rs->fast_tracepoints; |
10456 | } | |
10457 | ||
0fb4aa4b PA |
10458 | static int |
10459 | remote_supports_static_tracepoints (void) | |
10460 | { | |
10461 | struct remote_state *rs = get_remote_state (); | |
10462 | ||
10463 | return rs->static_tracepoints; | |
10464 | } | |
10465 | ||
1e4d1764 YQ |
10466 | static int |
10467 | remote_supports_install_in_trace (void) | |
10468 | { | |
10469 | struct remote_state *rs = get_remote_state (); | |
10470 | ||
10471 | return rs->install_in_trace; | |
10472 | } | |
10473 | ||
d248b706 KY |
10474 | static int |
10475 | remote_supports_enable_disable_tracepoint (void) | |
10476 | { | |
10477 | struct remote_state *rs = get_remote_state (); | |
10478 | ||
10479 | return rs->enable_disable_tracepoints; | |
10480 | } | |
10481 | ||
3065dfb6 SS |
10482 | static int |
10483 | remote_supports_string_tracing (void) | |
10484 | { | |
10485 | struct remote_state *rs = get_remote_state (); | |
10486 | ||
10487 | return rs->string_tracing; | |
10488 | } | |
10489 | ||
d3ce09f5 SS |
10490 | static int |
10491 | remote_can_run_breakpoint_commands (void) | |
10492 | { | |
10493 | struct remote_state *rs = get_remote_state (); | |
10494 | ||
10495 | return rs->breakpoint_commands; | |
10496 | } | |
10497 | ||
35b1e5cc | 10498 | static void |
ad91cd99 | 10499 | remote_trace_init (void) |
35b1e5cc SS |
10500 | { |
10501 | putpkt ("QTinit"); | |
10502 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10503 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10504 | error (_("Target does not support this command.")); |
10505 | } | |
10506 | ||
10507 | static void free_actions_list (char **actions_list); | |
10508 | static void free_actions_list_cleanup_wrapper (void *); | |
10509 | static void | |
10510 | free_actions_list_cleanup_wrapper (void *al) | |
10511 | { | |
10512 | free_actions_list (al); | |
10513 | } | |
10514 | ||
10515 | static void | |
10516 | free_actions_list (char **actions_list) | |
10517 | { | |
10518 | int ndx; | |
10519 | ||
10520 | if (actions_list == 0) | |
10521 | return; | |
10522 | ||
10523 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10524 | xfree (actions_list[ndx]); | |
10525 | ||
10526 | xfree (actions_list); | |
10527 | } | |
10528 | ||
409873ef SS |
10529 | /* Recursive routine to walk through command list including loops, and |
10530 | download packets for each command. */ | |
10531 | ||
10532 | static void | |
10533 | remote_download_command_source (int num, ULONGEST addr, | |
10534 | struct command_line *cmds) | |
10535 | { | |
10536 | struct remote_state *rs = get_remote_state (); | |
10537 | struct command_line *cmd; | |
10538 | ||
10539 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10540 | { | |
0df8b418 | 10541 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10542 | strcpy (rs->buf, "QTDPsrc:"); |
10543 | encode_source_string (num, addr, "cmd", cmd->line, | |
10544 | rs->buf + strlen (rs->buf), | |
10545 | rs->buf_size - strlen (rs->buf)); | |
10546 | putpkt (rs->buf); | |
10547 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10548 | if (strcmp (target_buf, "OK")) | |
10549 | warning (_("Target does not support source download.")); | |
10550 | ||
10551 | if (cmd->control_type == while_control | |
10552 | || cmd->control_type == while_stepping_control) | |
10553 | { | |
10554 | remote_download_command_source (num, addr, *cmd->body_list); | |
10555 | ||
0df8b418 | 10556 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10557 | strcpy (rs->buf, "QTDPsrc:"); |
10558 | encode_source_string (num, addr, "cmd", "end", | |
10559 | rs->buf + strlen (rs->buf), | |
10560 | rs->buf_size - strlen (rs->buf)); | |
10561 | putpkt (rs->buf); | |
10562 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10563 | if (strcmp (target_buf, "OK")) | |
10564 | warning (_("Target does not support source download.")); | |
10565 | } | |
10566 | } | |
10567 | } | |
10568 | ||
35b1e5cc | 10569 | static void |
e8ba3115 | 10570 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10571 | { |
bba74b36 | 10572 | #define BUF_SIZE 2048 |
e8ba3115 | 10573 | |
35b1e5cc | 10574 | CORE_ADDR tpaddr; |
409873ef | 10575 | char addrbuf[40]; |
bba74b36 | 10576 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10577 | char **tdp_actions; |
10578 | char **stepping_actions; | |
10579 | int ndx; | |
10580 | struct cleanup *old_chain = NULL; | |
10581 | struct agent_expr *aexpr; | |
10582 | struct cleanup *aexpr_chain = NULL; | |
10583 | char *pkt; | |
e8ba3115 | 10584 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10585 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10586 | |
dc673c81 | 10587 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10588 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10589 | tdp_actions); | |
10590 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10591 | stepping_actions); | |
10592 | ||
10593 | tpaddr = loc->address; | |
10594 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10595 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10596 | addrbuf, /* address */ | |
10597 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10598 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10599 | /* Fast tracepoints are mostly handled by the target, but we can |
10600 | tell the target how big of an instruction block should be moved | |
10601 | around. */ | |
10602 | if (b->type == bp_fast_tracepoint) | |
10603 | { | |
10604 | /* Only test for support at download time; we may not know | |
10605 | target capabilities at definition time. */ | |
10606 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10607 | { |
e8ba3115 | 10608 | int isize; |
35b1e5cc | 10609 | |
f5656ead | 10610 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10611 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10612 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10613 | isize); | |
35b1e5cc | 10614 | else |
e8ba3115 YQ |
10615 | /* If it passed validation at definition but fails now, |
10616 | something is very wrong. */ | |
10617 | internal_error (__FILE__, __LINE__, | |
10618 | _("Fast tracepoint not " | |
10619 | "valid during download")); | |
35b1e5cc | 10620 | } |
e8ba3115 YQ |
10621 | else |
10622 | /* Fast tracepoints are functionally identical to regular | |
10623 | tracepoints, so don't take lack of support as a reason to | |
10624 | give up on the trace run. */ | |
10625 | warning (_("Target does not support fast tracepoints, " | |
10626 | "downloading %d as regular tracepoint"), b->number); | |
10627 | } | |
10628 | else if (b->type == bp_static_tracepoint) | |
10629 | { | |
10630 | /* Only test for support at download time; we may not know | |
10631 | target capabilities at definition time. */ | |
10632 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10633 | { |
e8ba3115 | 10634 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10635 | |
e8ba3115 YQ |
10636 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10637 | strcat (buf, ":S"); | |
0fb4aa4b | 10638 | else |
e8ba3115 | 10639 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10640 | } |
e8ba3115 YQ |
10641 | else |
10642 | /* Fast tracepoints are functionally identical to regular | |
10643 | tracepoints, so don't take lack of support as a reason | |
10644 | to give up on the trace run. */ | |
10645 | error (_("Target does not support static tracepoints")); | |
10646 | } | |
10647 | /* If the tracepoint has a conditional, make it into an agent | |
10648 | expression and append to the definition. */ | |
10649 | if (loc->cond) | |
10650 | { | |
10651 | /* Only test support at download time, we may not know target | |
10652 | capabilities at definition time. */ | |
10653 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10654 | { |
e8ba3115 YQ |
10655 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10656 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10657 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10658 | aexpr->len); | |
e8ba3115 YQ |
10659 | pkt = buf + strlen (buf); |
10660 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10661 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10662 | *pkt = '\0'; | |
10663 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10664 | } |
e8ba3115 YQ |
10665 | else |
10666 | warning (_("Target does not support conditional tracepoints, " | |
10667 | "ignoring tp %d cond"), b->number); | |
10668 | } | |
35b1e5cc | 10669 | |
d9b3f62e | 10670 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10671 | strcat (buf, "-"); |
10672 | putpkt (buf); | |
10673 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10674 | if (strcmp (target_buf, "OK")) | |
10675 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10676 | |
e8ba3115 YQ |
10677 | /* do_single_steps (t); */ |
10678 | if (tdp_actions) | |
10679 | { | |
10680 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10681 | { |
e8ba3115 | 10682 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10683 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10684 | b->number, addrbuf, /* address */ | |
10685 | tdp_actions[ndx], | |
10686 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10687 | ? '-' : 0)); | |
e8ba3115 YQ |
10688 | putpkt (buf); |
10689 | remote_get_noisy_reply (&target_buf, | |
10690 | &target_buf_size); | |
10691 | if (strcmp (target_buf, "OK")) | |
10692 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10693 | } |
e8ba3115 YQ |
10694 | } |
10695 | if (stepping_actions) | |
10696 | { | |
10697 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10698 | { |
e8ba3115 | 10699 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10700 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10701 | b->number, addrbuf, /* address */ | |
10702 | ((ndx == 0) ? "S" : ""), | |
10703 | stepping_actions[ndx], | |
10704 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10705 | putpkt (buf); |
10706 | remote_get_noisy_reply (&target_buf, | |
10707 | &target_buf_size); | |
10708 | if (strcmp (target_buf, "OK")) | |
10709 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10710 | } |
e8ba3115 | 10711 | } |
409873ef | 10712 | |
e8ba3115 YQ |
10713 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10714 | == PACKET_ENABLE) | |
10715 | { | |
10716 | if (b->addr_string) | |
409873ef | 10717 | { |
e8ba3115 YQ |
10718 | strcpy (buf, "QTDPsrc:"); |
10719 | encode_source_string (b->number, loc->address, | |
10720 | "at", b->addr_string, buf + strlen (buf), | |
10721 | 2048 - strlen (buf)); | |
409873ef | 10722 | |
e8ba3115 YQ |
10723 | putpkt (buf); |
10724 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10725 | if (strcmp (target_buf, "OK")) | |
10726 | warning (_("Target does not support source download.")); | |
409873ef | 10727 | } |
e8ba3115 YQ |
10728 | if (b->cond_string) |
10729 | { | |
10730 | strcpy (buf, "QTDPsrc:"); | |
10731 | encode_source_string (b->number, loc->address, | |
10732 | "cond", b->cond_string, buf + strlen (buf), | |
10733 | 2048 - strlen (buf)); | |
10734 | putpkt (buf); | |
10735 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10736 | if (strcmp (target_buf, "OK")) | |
10737 | warning (_("Target does not support source download.")); | |
10738 | } | |
10739 | remote_download_command_source (b->number, loc->address, | |
10740 | breakpoint_commands (b)); | |
35b1e5cc | 10741 | } |
e8ba3115 YQ |
10742 | |
10743 | do_cleanups (old_chain); | |
35b1e5cc SS |
10744 | } |
10745 | ||
1e4d1764 YQ |
10746 | static int |
10747 | remote_can_download_tracepoint (void) | |
10748 | { | |
1e51243a PA |
10749 | struct remote_state *rs = get_remote_state (); |
10750 | struct trace_status *ts; | |
10751 | int status; | |
10752 | ||
10753 | /* Don't try to install tracepoints until we've relocated our | |
10754 | symbols, and fetched and merged the target's tracepoint list with | |
10755 | ours. */ | |
10756 | if (rs->starting_up) | |
10757 | return 0; | |
10758 | ||
10759 | ts = current_trace_status (); | |
10760 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10761 | |
10762 | if (status == -1 || !ts->running_known || !ts->running) | |
10763 | return 0; | |
10764 | ||
10765 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10766 | installing tracepoint in trace, we have to return. */ | |
10767 | if (!remote_supports_install_in_trace ()) | |
10768 | return 0; | |
10769 | ||
10770 | return 1; | |
10771 | } | |
10772 | ||
10773 | ||
35b1e5cc SS |
10774 | static void |
10775 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10776 | { | |
10777 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10778 | char *p; |
35b1e5cc | 10779 | |
bba74b36 YQ |
10780 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10781 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10782 | tsv->builtin); | |
00bf0b85 SS |
10783 | p = rs->buf + strlen (rs->buf); |
10784 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10785 | error (_("Trace state variable name too long for tsv definition packet")); | |
10786 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10787 | *p++ = '\0'; | |
35b1e5cc SS |
10788 | putpkt (rs->buf); |
10789 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10790 | if (*target_buf == '\0') |
10791 | error (_("Target does not support this command.")); | |
10792 | if (strcmp (target_buf, "OK") != 0) | |
10793 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10794 | } |
10795 | ||
d248b706 KY |
10796 | static void |
10797 | remote_enable_tracepoint (struct bp_location *location) | |
10798 | { | |
10799 | struct remote_state *rs = get_remote_state (); | |
10800 | char addr_buf[40]; | |
10801 | ||
10802 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10803 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10804 | location->owner->number, addr_buf); | |
d248b706 KY |
10805 | putpkt (rs->buf); |
10806 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10807 | if (*rs->buf == '\0') | |
10808 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10809 | if (strcmp (rs->buf, "OK") != 0) | |
10810 | error (_("Error on target while enabling tracepoint.")); | |
10811 | } | |
10812 | ||
10813 | static void | |
10814 | remote_disable_tracepoint (struct bp_location *location) | |
10815 | { | |
10816 | struct remote_state *rs = get_remote_state (); | |
10817 | char addr_buf[40]; | |
10818 | ||
10819 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10820 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10821 | location->owner->number, addr_buf); | |
d248b706 KY |
10822 | putpkt (rs->buf); |
10823 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10824 | if (*rs->buf == '\0') | |
10825 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10826 | if (strcmp (rs->buf, "OK") != 0) | |
10827 | error (_("Error on target while disabling tracepoint.")); | |
10828 | } | |
10829 | ||
35b1e5cc | 10830 | static void |
ad91cd99 | 10831 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10832 | { |
10833 | asection *s; | |
81b9b86e | 10834 | bfd *abfd = NULL; |
35b1e5cc | 10835 | bfd_size_type size; |
608bcef2 | 10836 | bfd_vma vma; |
35b1e5cc | 10837 | int anysecs = 0; |
c2fa21f1 | 10838 | int offset = 0; |
35b1e5cc SS |
10839 | |
10840 | if (!exec_bfd) | |
10841 | return; /* No information to give. */ | |
10842 | ||
10843 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10844 | offset = strlen (target_buf); |
35b1e5cc SS |
10845 | for (s = exec_bfd->sections; s; s = s->next) |
10846 | { | |
10847 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10848 | int sec_length; |
35b1e5cc SS |
10849 | |
10850 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10851 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10852 | (s->flags & SEC_READONLY) == 0) |
10853 | continue; | |
10854 | ||
10855 | anysecs = 1; | |
81b9b86e | 10856 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10857 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10858 | sprintf_vma (tmp1, vma); |
10859 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10860 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10861 | if (offset + sec_length + 1 > target_buf_size) | |
10862 | { | |
864ac8a7 HZ |
10863 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10864 | != PACKET_ENABLE) | |
10865 | warning (_("\ | |
c2fa21f1 HZ |
10866 | Too many sections for read-only sections definition packet.")); |
10867 | break; | |
10868 | } | |
bba74b36 YQ |
10869 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10870 | tmp1, tmp2); | |
c2fa21f1 | 10871 | offset += sec_length; |
35b1e5cc SS |
10872 | } |
10873 | if (anysecs) | |
10874 | { | |
10875 | putpkt (target_buf); | |
10876 | getpkt (&target_buf, &target_buf_size, 0); | |
10877 | } | |
10878 | } | |
10879 | ||
10880 | static void | |
ad91cd99 | 10881 | remote_trace_start (void) |
35b1e5cc SS |
10882 | { |
10883 | putpkt ("QTStart"); | |
10884 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10885 | if (*target_buf == '\0') |
10886 | error (_("Target does not support this command.")); | |
10887 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10888 | error (_("Bogus reply from target: %s"), target_buf); |
10889 | } | |
10890 | ||
10891 | static int | |
00bf0b85 | 10892 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10893 | { |
953b98d1 | 10894 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10895 | char *p = NULL; |
0df8b418 | 10896 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10897 | extern int trace_regblock_size; |
67f41397 | 10898 | volatile struct gdb_exception ex; |
bd3eecc3 PA |
10899 | enum packet_result result; |
10900 | ||
10901 | if (remote_protocol_packets[PACKET_qTStatus].support == PACKET_DISABLE) | |
10902 | return -1; | |
a744cf53 | 10903 | |
00bf0b85 SS |
10904 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10905 | ||
049dc89b JK |
10906 | putpkt ("qTStatus"); |
10907 | ||
67f41397 JK |
10908 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
10909 | { | |
10910 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10911 | } | |
10912 | if (ex.reason < 0) | |
10913 | { | |
598d3636 JK |
10914 | if (ex.error != TARGET_CLOSE_ERROR) |
10915 | { | |
10916 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10917 | return -1; | |
10918 | } | |
10919 | throw_exception (ex); | |
67f41397 | 10920 | } |
00bf0b85 | 10921 | |
bd3eecc3 PA |
10922 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10923 | ||
00bf0b85 | 10924 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10925 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10926 | return -1; |
35b1e5cc | 10927 | |
00bf0b85 | 10928 | /* We're working with a live target. */ |
f5911ea1 | 10929 | ts->filename = NULL; |
00bf0b85 | 10930 | |
00bf0b85 | 10931 | if (*p++ != 'T') |
35b1e5cc SS |
10932 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10933 | ||
84cebc4a YQ |
10934 | /* Function 'parse_trace_status' sets default value of each field of |
10935 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10936 | parse_trace_status (p, ts); |
10937 | ||
10938 | return ts->running; | |
35b1e5cc SS |
10939 | } |
10940 | ||
70221824 | 10941 | static void |
f196051f SS |
10942 | remote_get_tracepoint_status (struct breakpoint *bp, |
10943 | struct uploaded_tp *utp) | |
10944 | { | |
10945 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10946 | char *reply; |
10947 | struct bp_location *loc; | |
10948 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10949 | size_t size = get_remote_packet_size (); |
f196051f SS |
10950 | |
10951 | if (tp) | |
10952 | { | |
10953 | tp->base.hit_count = 0; | |
10954 | tp->traceframe_usage = 0; | |
10955 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10956 | { | |
10957 | /* If the tracepoint was never downloaded, don't go asking for | |
10958 | any status. */ | |
10959 | if (tp->number_on_target == 0) | |
10960 | continue; | |
bba74b36 YQ |
10961 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10962 | phex_nz (loc->address, 0)); | |
f196051f SS |
10963 | putpkt (rs->buf); |
10964 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10965 | if (reply && *reply) | |
10966 | { | |
10967 | if (*reply == 'V') | |
10968 | parse_tracepoint_status (reply + 1, bp, utp); | |
10969 | } | |
10970 | } | |
10971 | } | |
10972 | else if (utp) | |
10973 | { | |
10974 | utp->hit_count = 0; | |
10975 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10976 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10977 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10978 | putpkt (rs->buf); |
10979 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10980 | if (reply && *reply) | |
10981 | { | |
10982 | if (*reply == 'V') | |
10983 | parse_tracepoint_status (reply + 1, bp, utp); | |
10984 | } | |
10985 | } | |
10986 | } | |
10987 | ||
35b1e5cc | 10988 | static void |
ad91cd99 | 10989 | remote_trace_stop (void) |
35b1e5cc SS |
10990 | { |
10991 | putpkt ("QTStop"); | |
10992 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10993 | if (*target_buf == '\0') |
10994 | error (_("Target does not support this command.")); | |
10995 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10996 | error (_("Bogus reply from target: %s"), target_buf); |
10997 | } | |
10998 | ||
10999 | static int | |
11000 | remote_trace_find (enum trace_find_type type, int num, | |
cc5925ad | 11001 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11002 | int *tpp) |
11003 | { | |
11004 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11005 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11006 | char *p, *reply; |
11007 | int target_frameno = -1, target_tracept = -1; | |
11008 | ||
e6e4e701 PA |
11009 | /* Lookups other than by absolute frame number depend on the current |
11010 | trace selected, so make sure it is correct on the remote end | |
11011 | first. */ | |
11012 | if (type != tfind_number) | |
11013 | set_remote_traceframe (); | |
11014 | ||
35b1e5cc SS |
11015 | p = rs->buf; |
11016 | strcpy (p, "QTFrame:"); | |
11017 | p = strchr (p, '\0'); | |
11018 | switch (type) | |
11019 | { | |
11020 | case tfind_number: | |
bba74b36 | 11021 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11022 | break; |
11023 | case tfind_pc: | |
bba74b36 | 11024 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11025 | break; |
11026 | case tfind_tp: | |
bba74b36 | 11027 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11028 | break; |
11029 | case tfind_range: | |
bba74b36 YQ |
11030 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11031 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11032 | break; |
11033 | case tfind_outside: | |
bba74b36 YQ |
11034 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11035 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11036 | break; |
11037 | default: | |
9b20d036 | 11038 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11039 | } |
11040 | ||
11041 | putpkt (rs->buf); | |
2f65bcb7 | 11042 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11043 | if (*reply == '\0') |
11044 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11045 | |
11046 | while (reply && *reply) | |
11047 | switch (*reply) | |
11048 | { | |
11049 | case 'F': | |
f197e0f1 VP |
11050 | p = ++reply; |
11051 | target_frameno = (int) strtol (p, &reply, 16); | |
11052 | if (reply == p) | |
11053 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11054 | /* Don't update our remote traceframe number cache on failure |
11055 | to select a remote traceframe. */ | |
f197e0f1 VP |
11056 | if (target_frameno == -1) |
11057 | return -1; | |
35b1e5cc SS |
11058 | break; |
11059 | case 'T': | |
f197e0f1 VP |
11060 | p = ++reply; |
11061 | target_tracept = (int) strtol (p, &reply, 16); | |
11062 | if (reply == p) | |
11063 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11064 | break; |
11065 | case 'O': /* "OK"? */ | |
11066 | if (reply[1] == 'K' && reply[2] == '\0') | |
11067 | reply += 2; | |
11068 | else | |
11069 | error (_("Bogus reply from target: %s"), reply); | |
11070 | break; | |
11071 | default: | |
11072 | error (_("Bogus reply from target: %s"), reply); | |
11073 | } | |
11074 | if (tpp) | |
11075 | *tpp = target_tracept; | |
e6e4e701 | 11076 | |
262e1174 | 11077 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11078 | return target_frameno; |
11079 | } | |
11080 | ||
11081 | static int | |
11082 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
11083 | { | |
11084 | struct remote_state *rs = get_remote_state (); | |
11085 | char *reply; | |
11086 | ULONGEST uval; | |
11087 | ||
e6e4e701 PA |
11088 | set_remote_traceframe (); |
11089 | ||
bba74b36 | 11090 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11091 | putpkt (rs->buf); |
11092 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11093 | if (reply && *reply) | |
11094 | { | |
11095 | if (*reply == 'V') | |
11096 | { | |
11097 | unpack_varlen_hex (reply + 1, &uval); | |
11098 | *val = (LONGEST) uval; | |
11099 | return 1; | |
11100 | } | |
11101 | } | |
11102 | return 0; | |
11103 | } | |
11104 | ||
00bf0b85 | 11105 | static int |
011aacb0 | 11106 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
11107 | { |
11108 | struct remote_state *rs = get_remote_state (); | |
11109 | char *p, *reply; | |
11110 | ||
11111 | p = rs->buf; | |
11112 | strcpy (p, "QTSave:"); | |
11113 | p += strlen (p); | |
11114 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11115 | error (_("Remote file name too long for trace save packet")); | |
11116 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
11117 | *p++ = '\0'; | |
11118 | putpkt (rs->buf); | |
ad91cd99 | 11119 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11120 | if (*reply == '\0') |
ad91cd99 PA |
11121 | error (_("Target does not support this command.")); |
11122 | if (strcmp (reply, "OK") != 0) | |
11123 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11124 | return 0; |
11125 | } | |
11126 | ||
11127 | /* This is basically a memory transfer, but needs to be its own packet | |
11128 | because we don't know how the target actually organizes its trace | |
11129 | memory, plus we want to be able to ask for as much as possible, but | |
11130 | not be unhappy if we don't get as much as we ask for. */ | |
11131 | ||
11132 | static LONGEST | |
11133 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
11134 | { | |
11135 | struct remote_state *rs = get_remote_state (); | |
11136 | char *reply; | |
11137 | char *p; | |
11138 | int rslt; | |
11139 | ||
11140 | p = rs->buf; | |
11141 | strcpy (p, "qTBuffer:"); | |
11142 | p += strlen (p); | |
11143 | p += hexnumstr (p, offset); | |
11144 | *p++ = ','; | |
11145 | p += hexnumstr (p, len); | |
11146 | *p++ = '\0'; | |
11147 | ||
11148 | putpkt (rs->buf); | |
11149 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11150 | if (reply && *reply) | |
11151 | { | |
11152 | /* 'l' by itself means we're at the end of the buffer and | |
11153 | there is nothing more to get. */ | |
11154 | if (*reply == 'l') | |
11155 | return 0; | |
11156 | ||
11157 | /* Convert the reply into binary. Limit the number of bytes to | |
11158 | convert according to our passed-in buffer size, rather than | |
11159 | what was returned in the packet; if the target is | |
11160 | unexpectedly generous and gives us a bigger reply than we | |
11161 | asked for, we don't want to crash. */ | |
11162 | rslt = hex2bin (target_buf, buf, len); | |
11163 | return rslt; | |
11164 | } | |
11165 | ||
11166 | /* Something went wrong, flag as an error. */ | |
11167 | return -1; | |
11168 | } | |
11169 | ||
35b1e5cc SS |
11170 | static void |
11171 | remote_set_disconnected_tracing (int val) | |
11172 | { | |
11173 | struct remote_state *rs = get_remote_state (); | |
11174 | ||
33da3f1c SS |
11175 | if (rs->disconnected_tracing) |
11176 | { | |
ad91cd99 PA |
11177 | char *reply; |
11178 | ||
bba74b36 | 11179 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11180 | putpkt (rs->buf); |
ad91cd99 PA |
11181 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11182 | if (*reply == '\0') | |
33da3f1c | 11183 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11184 | if (strcmp (reply, "OK") != 0) |
11185 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11186 | } |
11187 | else if (val) | |
11188 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11189 | } |
11190 | ||
dc146f7c VP |
11191 | static int |
11192 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11193 | { | |
11194 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11195 | |
dc146f7c VP |
11196 | if (info && info->private) |
11197 | return info->private->core; | |
11198 | return -1; | |
11199 | } | |
11200 | ||
4daf5ac0 SS |
11201 | static void |
11202 | remote_set_circular_trace_buffer (int val) | |
11203 | { | |
11204 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11205 | char *reply; |
4daf5ac0 | 11206 | |
bba74b36 | 11207 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11208 | putpkt (rs->buf); |
ad91cd99 PA |
11209 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11210 | if (*reply == '\0') | |
4daf5ac0 | 11211 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11212 | if (strcmp (reply, "OK") != 0) |
11213 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11214 | } |
11215 | ||
b3b9301e PA |
11216 | static struct traceframe_info * |
11217 | remote_traceframe_info (void) | |
11218 | { | |
11219 | char *text; | |
11220 | ||
6c177e28 YQ |
11221 | /* If current traceframe is not selected, don't bother the remote |
11222 | stub. */ | |
11223 | if (get_traceframe_number () < 0) | |
11224 | return NULL; | |
11225 | ||
b3b9301e PA |
11226 | text = target_read_stralloc (¤t_target, |
11227 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11228 | if (text != NULL) | |
11229 | { | |
11230 | struct traceframe_info *info; | |
11231 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11232 | ||
11233 | info = parse_traceframe_info (text); | |
11234 | do_cleanups (back_to); | |
11235 | return info; | |
11236 | } | |
11237 | ||
11238 | return NULL; | |
11239 | } | |
11240 | ||
405f8e94 SS |
11241 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11242 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11243 | if the packet is not supported, and 0 if the minimum instruction | |
11244 | length is unknown. */ | |
11245 | ||
11246 | static int | |
11247 | remote_get_min_fast_tracepoint_insn_len (void) | |
11248 | { | |
11249 | struct remote_state *rs = get_remote_state (); | |
11250 | char *reply; | |
11251 | ||
e886a173 PA |
11252 | /* If we're not debugging a process yet, the IPA can't be |
11253 | loaded. */ | |
11254 | if (!target_has_execution) | |
11255 | return 0; | |
11256 | ||
11257 | /* Make sure the remote is pointing at the right process. */ | |
11258 | set_general_process (); | |
11259 | ||
bba74b36 | 11260 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11261 | putpkt (rs->buf); |
11262 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11263 | if (*reply == '\0') | |
11264 | return -1; | |
11265 | else | |
11266 | { | |
11267 | ULONGEST min_insn_len; | |
11268 | ||
11269 | unpack_varlen_hex (reply, &min_insn_len); | |
11270 | ||
11271 | return (int) min_insn_len; | |
11272 | } | |
11273 | } | |
11274 | ||
f6f899bf HAQ |
11275 | static void |
11276 | remote_set_trace_buffer_size (LONGEST val) | |
11277 | { | |
90585175 HAQ |
11278 | if (remote_protocol_packets[PACKET_QTBuffer_size].support |
11279 | != PACKET_DISABLE) | |
f6f899bf HAQ |
11280 | { |
11281 | struct remote_state *rs = get_remote_state (); | |
11282 | char *buf = rs->buf; | |
11283 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11284 | enum packet_result result; | |
11285 | ||
11286 | gdb_assert (val >= 0 || val == -1); | |
11287 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11288 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11289 | if (val < 0) | |
11290 | { | |
11291 | *buf++ = '-'; | |
11292 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11293 | } | |
11294 | else | |
11295 | buf += hexnumstr (buf, (ULONGEST) val); | |
11296 | ||
11297 | putpkt (rs->buf); | |
11298 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11299 | result = packet_ok (rs->buf, | |
11300 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11301 | ||
11302 | if (result != PACKET_OK) | |
11303 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11304 | } | |
11305 | } | |
11306 | ||
f196051f | 11307 | static int |
ca623f82 TT |
11308 | remote_set_trace_notes (const char *user, const char *notes, |
11309 | const char *stop_notes) | |
f196051f SS |
11310 | { |
11311 | struct remote_state *rs = get_remote_state (); | |
11312 | char *reply; | |
11313 | char *buf = rs->buf; | |
11314 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11315 | int nbytes; | |
11316 | ||
11317 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11318 | if (user) | |
11319 | { | |
11320 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
bc20a4af | 11321 | nbytes = bin2hex ((gdb_byte *) user, buf, 0); |
f196051f SS |
11322 | buf += 2 * nbytes; |
11323 | *buf++ = ';'; | |
11324 | } | |
11325 | if (notes) | |
11326 | { | |
11327 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
bc20a4af | 11328 | nbytes = bin2hex ((gdb_byte *) notes, buf, 0); |
f196051f SS |
11329 | buf += 2 * nbytes; |
11330 | *buf++ = ';'; | |
11331 | } | |
11332 | if (stop_notes) | |
11333 | { | |
11334 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
bc20a4af | 11335 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, 0); |
f196051f SS |
11336 | buf += 2 * nbytes; |
11337 | *buf++ = ';'; | |
11338 | } | |
11339 | /* Ensure the buffer is terminated. */ | |
11340 | *buf = '\0'; | |
11341 | ||
11342 | putpkt (rs->buf); | |
11343 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11344 | if (*reply == '\0') | |
11345 | return 0; | |
11346 | ||
11347 | if (strcmp (reply, "OK") != 0) | |
11348 | error (_("Bogus reply from target: %s"), reply); | |
11349 | ||
11350 | return 1; | |
11351 | } | |
11352 | ||
d1feda86 YQ |
11353 | static int |
11354 | remote_use_agent (int use) | |
11355 | { | |
11356 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
11357 | { | |
11358 | struct remote_state *rs = get_remote_state (); | |
11359 | ||
11360 | /* If the stub supports QAgent. */ | |
bba74b36 | 11361 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11362 | putpkt (rs->buf); |
11363 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11364 | ||
11365 | if (strcmp (rs->buf, "OK") == 0) | |
11366 | { | |
11367 | use_agent = use; | |
11368 | return 1; | |
11369 | } | |
11370 | } | |
11371 | ||
11372 | return 0; | |
11373 | } | |
11374 | ||
11375 | static int | |
11376 | remote_can_use_agent (void) | |
11377 | { | |
11378 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11379 | } | |
11380 | ||
9accd112 MM |
11381 | struct btrace_target_info |
11382 | { | |
11383 | /* The ptid of the traced thread. */ | |
11384 | ptid_t ptid; | |
11385 | }; | |
11386 | ||
11387 | /* Check whether the target supports branch tracing. */ | |
11388 | ||
11389 | static int | |
11390 | remote_supports_btrace (void) | |
11391 | { | |
11392 | if (remote_protocol_packets[PACKET_Qbtrace_off].support != PACKET_ENABLE) | |
11393 | return 0; | |
11394 | if (remote_protocol_packets[PACKET_Qbtrace_bts].support != PACKET_ENABLE) | |
11395 | return 0; | |
11396 | if (remote_protocol_packets[PACKET_qXfer_btrace].support != PACKET_ENABLE) | |
11397 | return 0; | |
11398 | ||
11399 | return 1; | |
11400 | } | |
11401 | ||
11402 | /* Enable branch tracing. */ | |
11403 | ||
11404 | static struct btrace_target_info * | |
11405 | remote_enable_btrace (ptid_t ptid) | |
11406 | { | |
11407 | struct btrace_target_info *tinfo = NULL; | |
11408 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11409 | struct remote_state *rs = get_remote_state (); | |
11410 | char *buf = rs->buf; | |
11411 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11412 | ||
11413 | if (packet->support != PACKET_ENABLE) | |
11414 | error (_("Target does not support branch tracing.")); | |
11415 | ||
11416 | set_general_thread (ptid); | |
11417 | ||
11418 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11419 | putpkt (rs->buf); | |
11420 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11421 | ||
11422 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11423 | { | |
11424 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11425 | error (_("Could not enable branch tracing for %s: %s"), | |
11426 | target_pid_to_str (ptid), rs->buf + 2); | |
11427 | else | |
11428 | error (_("Could not enable branch tracing for %s."), | |
11429 | target_pid_to_str (ptid)); | |
11430 | } | |
11431 | ||
11432 | tinfo = xzalloc (sizeof (*tinfo)); | |
11433 | tinfo->ptid = ptid; | |
11434 | ||
11435 | return tinfo; | |
11436 | } | |
11437 | ||
11438 | /* Disable branch tracing. */ | |
11439 | ||
11440 | static void | |
11441 | remote_disable_btrace (struct btrace_target_info *tinfo) | |
11442 | { | |
11443 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11444 | struct remote_state *rs = get_remote_state (); | |
11445 | char *buf = rs->buf; | |
11446 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11447 | ||
11448 | if (packet->support != PACKET_ENABLE) | |
11449 | error (_("Target does not support branch tracing.")); | |
11450 | ||
11451 | set_general_thread (tinfo->ptid); | |
11452 | ||
11453 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11454 | putpkt (rs->buf); | |
11455 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11456 | ||
11457 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11458 | { | |
11459 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11460 | error (_("Could not disable branch tracing for %s: %s"), | |
11461 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11462 | else | |
11463 | error (_("Could not disable branch tracing for %s."), | |
11464 | target_pid_to_str (tinfo->ptid)); | |
11465 | } | |
11466 | ||
11467 | xfree (tinfo); | |
11468 | } | |
11469 | ||
11470 | /* Teardown branch tracing. */ | |
11471 | ||
11472 | static void | |
11473 | remote_teardown_btrace (struct btrace_target_info *tinfo) | |
11474 | { | |
11475 | /* We must not talk to the target during teardown. */ | |
11476 | xfree (tinfo); | |
11477 | } | |
11478 | ||
11479 | /* Read the branch trace. */ | |
11480 | ||
969c39fb MM |
11481 | static enum btrace_error |
11482 | remote_read_btrace (VEC (btrace_block_s) **btrace, | |
11483 | struct btrace_target_info *tinfo, | |
9accd112 MM |
11484 | enum btrace_read_type type) |
11485 | { | |
11486 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11487 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 11488 | struct cleanup *cleanup; |
9accd112 MM |
11489 | const char *annex; |
11490 | char *xml; | |
11491 | ||
11492 | if (packet->support != PACKET_ENABLE) | |
11493 | error (_("Target does not support branch tracing.")); | |
11494 | ||
11495 | #if !defined(HAVE_LIBEXPAT) | |
11496 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11497 | #endif | |
11498 | ||
11499 | switch (type) | |
11500 | { | |
864089d2 | 11501 | case BTRACE_READ_ALL: |
9accd112 MM |
11502 | annex = "all"; |
11503 | break; | |
864089d2 | 11504 | case BTRACE_READ_NEW: |
9accd112 MM |
11505 | annex = "new"; |
11506 | break; | |
969c39fb MM |
11507 | case BTRACE_READ_DELTA: |
11508 | annex = "delta"; | |
11509 | break; | |
9accd112 MM |
11510 | default: |
11511 | internal_error (__FILE__, __LINE__, | |
11512 | _("Bad branch tracing read type: %u."), | |
11513 | (unsigned int) type); | |
11514 | } | |
11515 | ||
11516 | xml = target_read_stralloc (¤t_target, | |
11517 | TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
11518 | if (xml == NULL) |
11519 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 11520 | |
969c39fb MM |
11521 | cleanup = make_cleanup (xfree, xml); |
11522 | *btrace = parse_xml_btrace (xml); | |
11523 | do_cleanups (cleanup); | |
9accd112 | 11524 | |
969c39fb | 11525 | return BTRACE_ERR_NONE; |
9accd112 MM |
11526 | } |
11527 | ||
ced63ec0 GB |
11528 | static int |
11529 | remote_augmented_libraries_svr4_read (void) | |
11530 | { | |
11531 | struct remote_state *rs = get_remote_state (); | |
11532 | ||
11533 | return rs->augmented_libraries_svr4_read; | |
11534 | } | |
11535 | ||
c906108c | 11536 | static void |
fba45db2 | 11537 | init_remote_ops (void) |
c906108c | 11538 | { |
c5aa993b | 11539 | remote_ops.to_shortname = "remote"; |
c906108c | 11540 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11541 | remote_ops.to_doc = |
c906108c | 11542 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11543 | Specify the serial device it is connected to\n\ |
11544 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11545 | remote_ops.to_open = remote_open; |
11546 | remote_ops.to_close = remote_close; | |
c906108c | 11547 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11548 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11549 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11550 | remote_ops.to_wait = remote_wait; |
11551 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11552 | remote_ops.to_store_registers = remote_store_registers; | |
11553 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11554 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11555 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11556 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11557 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11558 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11559 | remote_ops.to_watchpoint_addr_within_range = |
11560 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11561 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11562 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11563 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11564 | remote_ops.to_region_ok_for_hw_watchpoint |
11565 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11566 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11567 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
11568 | remote_ops.to_kill = remote_kill; |
11569 | remote_ops.to_load = generic_load; | |
c906108c | 11570 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11571 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11572 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11573 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11574 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11575 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11576 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11577 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11578 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11579 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11580 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11581 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11582 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11583 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11584 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11585 | remote_ops.to_has_memory = default_child_has_memory; | |
11586 | remote_ops.to_has_stack = default_child_has_stack; | |
11587 | remote_ops.to_has_registers = default_child_has_registers; | |
11588 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11589 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11590 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11591 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11592 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11593 | remote_ops.to_flash_erase = remote_flash_erase; |
11594 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11595 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11596 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11597 | remote_ops.to_can_async_p = remote_can_async_p; |
11598 | remote_ops.to_is_async_p = remote_is_async_p; | |
11599 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11600 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11601 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11602 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11603 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11604 | remote_ops.to_supports_disable_randomization |
11605 | = remote_supports_disable_randomization; | |
7313baad UW |
11606 | remote_ops.to_fileio_open = remote_hostio_open; |
11607 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11608 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11609 | remote_ops.to_fileio_close = remote_hostio_close; | |
11610 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11611 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11612 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11613 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11614 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11615 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11616 | remote_ops.to_trace_init = remote_trace_init; |
11617 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11618 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11619 | remote_ops.to_download_trace_state_variable |
11620 | = remote_download_trace_state_variable; | |
d248b706 KY |
11621 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11622 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11623 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11624 | remote_ops.to_trace_start = remote_trace_start; | |
11625 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11626 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11627 | remote_ops.to_trace_stop = remote_trace_stop; |
11628 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11629 | remote_ops.to_get_trace_state_variable_value |
11630 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11631 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11632 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11633 | remote_ops.to_upload_trace_state_variables |
11634 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11635 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11636 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11637 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11638 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11639 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11640 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11641 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11642 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11643 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11644 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11645 | remote_ops.to_static_tracepoint_marker_at |
11646 | = remote_static_tracepoint_marker_at; | |
11647 | remote_ops.to_static_tracepoint_markers_by_strid | |
11648 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11649 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11650 | remote_ops.to_use_agent = remote_use_agent; |
11651 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11652 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11653 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11654 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11655 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11656 | remote_ops.to_read_btrace = remote_read_btrace; | |
ced63ec0 GB |
11657 | remote_ops.to_augmented_libraries_svr4_read = |
11658 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11659 | } |
11660 | ||
11661 | /* Set up the extended remote vector by making a copy of the standard | |
11662 | remote vector and adding to it. */ | |
11663 | ||
11664 | static void | |
fba45db2 | 11665 | init_extended_remote_ops (void) |
c906108c SS |
11666 | { |
11667 | extended_remote_ops = remote_ops; | |
11668 | ||
0f71a2f6 | 11669 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11670 | extended_remote_ops.to_longname = |
c906108c | 11671 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11672 | extended_remote_ops.to_doc = |
c906108c | 11673 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11674 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11675 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11676 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11677 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11678 | extended_remote_ops.to_detach = extended_remote_detach; |
11679 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11680 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11681 | extended_remote_ops.to_supports_disable_randomization |
11682 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11683 | } |
11684 | ||
6426a772 JM |
11685 | static int |
11686 | remote_can_async_p (void) | |
11687 | { | |
5d93a237 TT |
11688 | struct remote_state *rs = get_remote_state (); |
11689 | ||
c6ebd6cf | 11690 | if (!target_async_permitted) |
75c99385 PA |
11691 | /* We only enable async when the user specifically asks for it. */ |
11692 | return 0; | |
11693 | ||
23860348 | 11694 | /* We're async whenever the serial device is. */ |
5d93a237 | 11695 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11696 | } |
11697 | ||
11698 | static int | |
11699 | remote_is_async_p (void) | |
11700 | { | |
5d93a237 TT |
11701 | struct remote_state *rs = get_remote_state (); |
11702 | ||
c6ebd6cf | 11703 | if (!target_async_permitted) |
75c99385 PA |
11704 | /* We only enable async when the user specifically asks for it. */ |
11705 | return 0; | |
11706 | ||
23860348 | 11707 | /* We're async whenever the serial device is. */ |
5d93a237 | 11708 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11709 | } |
11710 | ||
2acceee2 JM |
11711 | /* Pass the SERIAL event on and up to the client. One day this code |
11712 | will be able to delay notifying the client of an event until the | |
23860348 | 11713 | point where an entire packet has been received. */ |
2acceee2 | 11714 | |
2acceee2 JM |
11715 | static serial_event_ftype remote_async_serial_handler; |
11716 | ||
6426a772 | 11717 | static void |
819cc324 | 11718 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11719 | { |
88b496c3 TT |
11720 | struct remote_state *rs = context; |
11721 | ||
2acceee2 JM |
11722 | /* Don't propogate error information up to the client. Instead let |
11723 | the client find out about the error by querying the target. */ | |
88b496c3 | 11724 | rs->async_client_callback (INF_REG_EVENT, rs->async_client_context); |
2acceee2 JM |
11725 | } |
11726 | ||
74531fed PA |
11727 | static void |
11728 | remote_async_inferior_event_handler (gdb_client_data data) | |
11729 | { | |
11730 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11731 | } | |
11732 | ||
2acceee2 | 11733 | static void |
2bc416ba | 11734 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11735 | void *context), void *context) |
2acceee2 | 11736 | { |
5d93a237 TT |
11737 | struct remote_state *rs = get_remote_state (); |
11738 | ||
2acceee2 JM |
11739 | if (callback != NULL) |
11740 | { | |
88b496c3 TT |
11741 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
11742 | rs->async_client_callback = callback; | |
11743 | rs->async_client_context = context; | |
2acceee2 JM |
11744 | } |
11745 | else | |
5d93a237 | 11746 | serial_async (rs->remote_desc, NULL, NULL); |
6426a772 JM |
11747 | } |
11748 | ||
5a2468f5 | 11749 | static void |
c2d11a7d | 11750 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11751 | { |
427c3a89 | 11752 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11753 | } |
11754 | ||
d471ea57 AC |
11755 | static void |
11756 | show_remote_cmd (char *args, int from_tty) | |
11757 | { | |
37a105a1 | 11758 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11759 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11760 | struct cleanup *showlist_chain; |
11761 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11762 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11763 | |
11764 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11765 | for (; list != NULL; list = list->next) | |
11766 | if (strcmp (list->name, "Z-packet") == 0) | |
11767 | continue; | |
427c3a89 DJ |
11768 | else if (list->type == not_set_cmd) |
11769 | /* Alias commands are exactly like the original, except they | |
11770 | don't have the normal type. */ | |
11771 | continue; | |
11772 | else | |
37a105a1 DJ |
11773 | { |
11774 | struct cleanup *option_chain | |
11775 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11776 | |
37a105a1 DJ |
11777 | ui_out_field_string (uiout, "name", list->name); |
11778 | ui_out_text (uiout, ": "); | |
427c3a89 | 11779 | if (list->type == show_cmd) |
5b9afe8a | 11780 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11781 | else |
11782 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11783 | /* Close the tuple. */ |
11784 | do_cleanups (option_chain); | |
11785 | } | |
427c3a89 DJ |
11786 | |
11787 | /* Close the tuple. */ | |
11788 | do_cleanups (showlist_chain); | |
d471ea57 | 11789 | } |
5a2468f5 | 11790 | |
0f71a2f6 | 11791 | |
23860348 | 11792 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11793 | static void |
11794 | remote_new_objfile (struct objfile *objfile) | |
11795 | { | |
5d93a237 TT |
11796 | struct remote_state *rs = get_remote_state (); |
11797 | ||
11798 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11799 | remote_check_symbols (); |
dc8acb97 MS |
11800 | } |
11801 | ||
00bf0b85 SS |
11802 | /* Pull all the tracepoints defined on the target and create local |
11803 | data structures representing them. We don't want to create real | |
11804 | tracepoints yet, we don't want to mess up the user's existing | |
11805 | collection. */ | |
11806 | ||
11807 | static int | |
11808 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11809 | { |
00bf0b85 SS |
11810 | struct remote_state *rs = get_remote_state (); |
11811 | char *p; | |
d5551862 | 11812 | |
00bf0b85 SS |
11813 | /* Ask for a first packet of tracepoint definition. */ |
11814 | putpkt ("qTfP"); | |
11815 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11816 | p = rs->buf; | |
11817 | while (*p && *p != 'l') | |
d5551862 | 11818 | { |
00bf0b85 SS |
11819 | parse_tracepoint_definition (p, utpp); |
11820 | /* Ask for another packet of tracepoint definition. */ | |
11821 | putpkt ("qTsP"); | |
11822 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11823 | p = rs->buf; | |
d5551862 | 11824 | } |
00bf0b85 | 11825 | return 0; |
d5551862 SS |
11826 | } |
11827 | ||
00bf0b85 SS |
11828 | static int |
11829 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11830 | { |
00bf0b85 | 11831 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11832 | char *p; |
d5551862 | 11833 | |
00bf0b85 SS |
11834 | /* Ask for a first packet of variable definition. */ |
11835 | putpkt ("qTfV"); | |
d5551862 SS |
11836 | getpkt (&rs->buf, &rs->buf_size, 0); |
11837 | p = rs->buf; | |
00bf0b85 | 11838 | while (*p && *p != 'l') |
d5551862 | 11839 | { |
00bf0b85 SS |
11840 | parse_tsv_definition (p, utsvp); |
11841 | /* Ask for another packet of variable definition. */ | |
11842 | putpkt ("qTsV"); | |
d5551862 SS |
11843 | getpkt (&rs->buf, &rs->buf_size, 0); |
11844 | p = rs->buf; | |
11845 | } | |
00bf0b85 | 11846 | return 0; |
d5551862 SS |
11847 | } |
11848 | ||
c1e36e3e PA |
11849 | /* The "set/show range-stepping" show hook. */ |
11850 | ||
11851 | static void | |
11852 | show_range_stepping (struct ui_file *file, int from_tty, | |
11853 | struct cmd_list_element *c, | |
11854 | const char *value) | |
11855 | { | |
11856 | fprintf_filtered (file, | |
11857 | _("Debugger's willingness to use range stepping " | |
11858 | "is %s.\n"), value); | |
11859 | } | |
11860 | ||
11861 | /* The "set/show range-stepping" set hook. */ | |
11862 | ||
11863 | static void | |
11864 | set_range_stepping (char *ignore_args, int from_tty, | |
11865 | struct cmd_list_element *c) | |
11866 | { | |
5d93a237 TT |
11867 | struct remote_state *rs = get_remote_state (); |
11868 | ||
c1e36e3e PA |
11869 | /* Whene enabling, check whether range stepping is actually |
11870 | supported by the target, and warn if not. */ | |
11871 | if (use_range_stepping) | |
11872 | { | |
5d93a237 | 11873 | if (rs->remote_desc != NULL) |
c1e36e3e | 11874 | { |
c1e36e3e PA |
11875 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
11876 | remote_vcont_probe (rs); | |
11877 | ||
11878 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_ENABLE | |
11879 | && rs->supports_vCont.r) | |
11880 | return; | |
11881 | } | |
11882 | ||
11883 | warning (_("Range stepping is not supported by the current target")); | |
11884 | } | |
11885 | } | |
11886 | ||
c906108c | 11887 | void |
fba45db2 | 11888 | _initialize_remote (void) |
c906108c | 11889 | { |
ea9c271d | 11890 | struct remote_state *rs; |
9a7071a8 | 11891 | struct cmd_list_element *cmd; |
6f937416 | 11892 | const char *cmd_name; |
ea9c271d | 11893 | |
0f71a2f6 | 11894 | /* architecture specific data */ |
2bc416ba | 11895 | remote_gdbarch_data_handle = |
23860348 | 11896 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11897 | remote_g_packet_data_handle = |
11898 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11899 | |
ea9c271d DJ |
11900 | /* Initialize the per-target state. At the moment there is only one |
11901 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
11902 | time. */ |
11903 | remote_state = new_remote_state (); | |
ea9c271d | 11904 | |
c906108c SS |
11905 | init_remote_ops (); |
11906 | add_target (&remote_ops); | |
11907 | ||
11908 | init_extended_remote_ops (); | |
11909 | add_target (&extended_remote_ops); | |
cce74817 | 11910 | |
dc8acb97 | 11911 | /* Hook into new objfile notification. */ |
06d3b283 | 11912 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11913 | /* We're no longer interested in notification events of an inferior |
11914 | when it exits. */ | |
11915 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11916 | |
b803fb0f | 11917 | /* Set up signal handlers. */ |
934b9bac | 11918 | async_sigint_remote_token = |
b803fb0f | 11919 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 11920 | async_sigint_remote_twice_token = |
6d549500 | 11921 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11922 | |
c906108c SS |
11923 | #if 0 |
11924 | init_remote_threadtests (); | |
11925 | #endif | |
11926 | ||
722247f1 | 11927 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11928 | /* set/show remote ... */ |
d471ea57 | 11929 | |
1bedd215 | 11930 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11931 | Remote protocol specific variables\n\ |
11932 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11933 | the packets being used"), |
cff3e48b | 11934 | &remote_set_cmdlist, "set remote ", |
23860348 | 11935 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11936 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11937 | Remote protocol specific variables\n\ |
11938 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11939 | the packets being used"), |
cff3e48b | 11940 | &remote_show_cmdlist, "show remote ", |
23860348 | 11941 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11942 | |
1a966eab AC |
11943 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11944 | Compare section data on target to the exec file.\n\ | |
11945 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11946 | &cmdlist); |
11947 | ||
1a966eab AC |
11948 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11949 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11950 | maintenance packet TEXT\n\ |
11951 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11952 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11953 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11954 | terminating `#' character and checksum."), |
c906108c SS |
11955 | &maintenancelist); |
11956 | ||
7915a72c AC |
11957 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11958 | Set whether to send break if interrupted."), _("\ | |
11959 | Show whether to send break if interrupted."), _("\ | |
11960 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11961 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11962 | &setlist, &showlist); |
9a7071a8 JB |
11963 | cmd_name = "remotebreak"; |
11964 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11965 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11966 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11967 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11968 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11969 | ||
11970 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11971 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11972 | _("\ | |
9a7071a8 JB |
11973 | Set interrupt sequence to remote target."), _("\ |
11974 | Show interrupt sequence to remote target."), _("\ | |
11975 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11976 | NULL, show_interrupt_sequence, | |
11977 | &remote_set_cmdlist, | |
11978 | &remote_show_cmdlist); | |
11979 | ||
11980 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11981 | &interrupt_on_connect, _("\ | |
11982 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11983 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11984 | If set, interrupt sequence is sent to remote target."), | |
11985 | NULL, NULL, | |
11986 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11987 | |
23860348 | 11988 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11989 | |
1a966eab AC |
11990 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11991 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11992 | &setlist); |
1a966eab AC |
11993 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11994 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11995 | &showlist); |
11996 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11997 | set_memory_write_packet_size, _("\ |
11998 | Set the maximum number of bytes per memory-write packet.\n\ | |
11999 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12000 | default packet size. The actual limit is further reduced\n\ | |
12001 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12002 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12003 | &remote_set_cmdlist); |
12004 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12005 | set_memory_read_packet_size, _("\ |
12006 | Set the maximum number of bytes per memory-read packet.\n\ | |
12007 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12008 | default packet size. The actual limit is further reduced\n\ | |
12009 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12010 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12011 | &remote_set_cmdlist); |
12012 | add_cmd ("memory-write-packet-size", no_class, | |
12013 | show_memory_write_packet_size, | |
1a966eab | 12014 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12015 | &remote_show_cmdlist); |
12016 | add_cmd ("memory-read-packet-size", no_class, | |
12017 | show_memory_read_packet_size, | |
1a966eab | 12018 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12019 | &remote_show_cmdlist); |
c906108c | 12020 | |
b3f42336 | 12021 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12022 | &remote_hw_watchpoint_limit, _("\ |
12023 | Set the maximum number of target hardware watchpoints."), _("\ | |
12024 | Show the maximum number of target hardware watchpoints."), _("\ | |
12025 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12026 | NULL, NULL, /* FIXME: i18n: The maximum |
12027 | number of target hardware | |
12028 | watchpoints is %s. */ | |
b3f42336 | 12029 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12030 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12031 | &remote_hw_watchpoint_length_limit, _("\ | |
12032 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12033 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12034 | Specify a negative limit for unlimited."), | |
12035 | NULL, NULL, /* FIXME: i18n: The maximum | |
12036 | length (in bytes) of a target | |
12037 | hardware watchpoint is %s. */ | |
12038 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12039 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12040 | &remote_hw_breakpoint_limit, _("\ |
12041 | Set the maximum number of target hardware breakpoints."), _("\ | |
12042 | Show the maximum number of target hardware breakpoints."), _("\ | |
12043 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12044 | NULL, NULL, /* FIXME: i18n: The maximum |
12045 | number of target hardware | |
12046 | breakpoints is %s. */ | |
b3f42336 | 12047 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12048 | |
1b493192 PA |
12049 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12050 | &remote_address_size, _("\ | |
4d28ad1e AC |
12051 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12052 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12053 | NULL, |
12054 | NULL, /* FIXME: i18n: */ | |
12055 | &setlist, &showlist); | |
c906108c | 12056 | |
444abaca | 12057 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12058 | "X", "binary-download", 1); |
0f71a2f6 | 12059 | |
444abaca | 12060 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12061 | "vCont", "verbose-resume", 0); |
506fb367 | 12062 | |
89be2091 DJ |
12063 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12064 | "QPassSignals", "pass-signals", 0); | |
12065 | ||
9b224c5e PA |
12066 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12067 | "QProgramSignals", "program-signals", 0); | |
12068 | ||
444abaca | 12069 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12070 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12071 | |
444abaca | 12072 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12073 | "P", "set-register", 1); |
d471ea57 | 12074 | |
444abaca | 12075 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12076 | "p", "fetch-register", 1); |
b96ec7ac | 12077 | |
444abaca | 12078 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12079 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12080 | |
444abaca | 12081 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12082 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12083 | |
444abaca | 12084 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12085 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12086 | |
444abaca | 12087 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12088 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12089 | |
444abaca | 12090 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12091 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12092 | |
0876f84a DJ |
12093 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12094 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12095 | |
23181151 DJ |
12096 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12097 | "qXfer:features:read", "target-features", 0); | |
12098 | ||
cfa9d6d9 DJ |
12099 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12100 | "qXfer:libraries:read", "library-info", 0); | |
12101 | ||
2268b414 JK |
12102 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12103 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12104 | ||
fd79ecee DJ |
12105 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12106 | "qXfer:memory-map:read", "memory-map", 0); | |
12107 | ||
0e7f50da UW |
12108 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12109 | "qXfer:spu:read", "read-spu-object", 0); | |
12110 | ||
12111 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12112 | "qXfer:spu:write", "write-spu-object", 0); | |
12113 | ||
07e059b5 VP |
12114 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12115 | "qXfer:osdata:read", "osdata", 0); | |
12116 | ||
dc146f7c VP |
12117 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12118 | "qXfer:threads:read", "threads", 0); | |
12119 | ||
4aa995e1 PA |
12120 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12121 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12122 | ||
12123 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12124 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12125 | ||
b3b9301e PA |
12126 | add_packet_config_cmd |
12127 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12128 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12129 | |
169081d0 TG |
12130 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12131 | "qXfer:uib:read", "unwind-info-block", 0); | |
12132 | ||
444abaca | 12133 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12134 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12135 | 0); |
12136 | ||
711e434b PM |
12137 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12138 | "qGetTIBAddr", "get-thread-information-block-address", | |
12139 | 0); | |
12140 | ||
40ab02ce MS |
12141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12142 | "bc", "reverse-continue", 0); | |
12143 | ||
12144 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12145 | "bs", "reverse-step", 0); | |
12146 | ||
be2a5f71 DJ |
12147 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12148 | "qSupported", "supported-packets", 0); | |
12149 | ||
08388c79 DE |
12150 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12151 | "qSearch:memory", "search-memory", 0); | |
12152 | ||
bd3eecc3 PA |
12153 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12154 | "qTStatus", "trace-status", 0); | |
12155 | ||
a6b151f1 DJ |
12156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12157 | "vFile:open", "hostio-open", 0); | |
12158 | ||
12159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12160 | "vFile:pread", "hostio-pread", 0); | |
12161 | ||
12162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12163 | "vFile:pwrite", "hostio-pwrite", 0); | |
12164 | ||
12165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12166 | "vFile:close", "hostio-close", 0); | |
12167 | ||
12168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12169 | "vFile:unlink", "hostio-unlink", 0); | |
12170 | ||
b9e7b9c3 UW |
12171 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12172 | "vFile:readlink", "hostio-readlink", 0); | |
12173 | ||
2d717e4f DJ |
12174 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12175 | "vAttach", "attach", 0); | |
12176 | ||
12177 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12178 | "vRun", "run", 0); | |
12179 | ||
a6f3e723 SL |
12180 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12181 | "QStartNoAckMode", "noack", 0); | |
12182 | ||
82f73884 PA |
12183 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12184 | "vKill", "kill", 0); | |
12185 | ||
0b16c5cf PA |
12186 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12187 | "qAttached", "query-attached", 0); | |
12188 | ||
782b2b07 | 12189 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12190 | "ConditionalTracepoints", |
12191 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12192 | |
12193 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12194 | "ConditionalBreakpoints", | |
12195 | "conditional-breakpoints", 0); | |
12196 | ||
d3ce09f5 SS |
12197 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12198 | "BreakpointCommands", | |
12199 | "breakpoint-commands", 0); | |
12200 | ||
7a697b8d SS |
12201 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12202 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12203 | |
409873ef SS |
12204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12205 | "TracepointSource", "TracepointSource", 0); | |
12206 | ||
d914c394 SS |
12207 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12208 | "QAllow", "allow", 0); | |
12209 | ||
0fb4aa4b PA |
12210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12211 | "StaticTracepoints", "static-tracepoints", 0); | |
12212 | ||
1e4d1764 YQ |
12213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12214 | "InstallInTrace", "install-in-trace", 0); | |
12215 | ||
0fb4aa4b PA |
12216 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12217 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12218 | ||
78d85199 YQ |
12219 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12220 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12221 | ||
03583c20 UW |
12222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12223 | "QDisableRandomization", "disable-randomization", 0); | |
12224 | ||
d1feda86 YQ |
12225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12226 | "QAgent", "agent", 0); | |
12227 | ||
f6f899bf HAQ |
12228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12229 | "QTBuffer:size", "trace-buffer-size", 0); | |
12230 | ||
9accd112 MM |
12231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12232 | "Qbtrace:off", "disable-btrace", 0); | |
12233 | ||
12234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12235 | "Qbtrace:bts", "enable-btrace", 0); | |
12236 | ||
12237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12238 | "qXfer:btrace", "read-btrace", 0); | |
12239 | ||
37a105a1 DJ |
12240 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12241 | Z sub-packet has its own set and show commands, but users may | |
12242 | have sets to this variable in their .gdbinit files (or in their | |
12243 | documentation). */ | |
e9e68a56 | 12244 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12245 | &remote_Z_packet_detect, _("\ |
12246 | Set use of remote protocol `Z' packets"), _("\ | |
12247 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12248 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12249 | packets."), |
e9e68a56 | 12250 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12251 | show_remote_protocol_Z_packet_cmd, |
12252 | /* FIXME: i18n: Use of remote protocol | |
12253 | `Z' packets is %s. */ | |
e9e68a56 | 12254 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12255 | |
a6b151f1 DJ |
12256 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12257 | Manipulate files on the remote system\n\ | |
12258 | Transfer files to and from the remote target system."), | |
12259 | &remote_cmdlist, "remote ", | |
12260 | 0 /* allow-unknown */, &cmdlist); | |
12261 | ||
12262 | add_cmd ("put", class_files, remote_put_command, | |
12263 | _("Copy a local file to the remote system."), | |
12264 | &remote_cmdlist); | |
12265 | ||
12266 | add_cmd ("get", class_files, remote_get_command, | |
12267 | _("Copy a remote file to the local system."), | |
12268 | &remote_cmdlist); | |
12269 | ||
12270 | add_cmd ("delete", class_files, remote_delete_command, | |
12271 | _("Delete a remote file."), | |
12272 | &remote_cmdlist); | |
12273 | ||
2d717e4f DJ |
12274 | remote_exec_file = xstrdup (""); |
12275 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12276 | &remote_exec_file, _("\ | |
12277 | Set the remote pathname for \"run\""), _("\ | |
12278 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12279 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12280 | ||
c1e36e3e PA |
12281 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12282 | &use_range_stepping, _("\ | |
12283 | Enable or disable range stepping."), _("\ | |
12284 | Show whether target-assisted range stepping is enabled."), _("\ | |
12285 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12286 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12287 | of issuing multiple single-steps. This speeds up source level\n\ | |
12288 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12289 | stepping is supported by the target. The default is on."), | |
12290 | set_range_stepping, | |
12291 | show_range_stepping, | |
12292 | &setlist, | |
12293 | &showlist); | |
12294 | ||
449092f6 CV |
12295 | /* Eventually initialize fileio. See fileio.c */ |
12296 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
12297 | |
12298 | /* Take advantage of the fact that the LWP field is not used, to tag | |
12299 | special ptids with it set to != 0. */ | |
82f73884 PA |
12300 | magic_null_ptid = ptid_build (42000, 1, -1); |
12301 | not_sent_ptid = ptid_build (42000, 1, -2); | |
12302 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
12303 | |
12304 | target_buf_size = 2048; | |
12305 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12306 | } |
10760264 | 12307 |