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" |
9c3d6531 | 48 | #include "rsp-low.h" |
c906108c | 49 | |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
934b9bac | 91 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 92 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 93 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 94 | int forever, int *is_notif); |
6426a772 | 95 | |
934b9bac JK |
96 | static void async_handle_remote_sigint (int); |
97 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
f32dbf8c MM |
101 | static void remote_prepare_to_store (struct target_ops *self, |
102 | struct regcache *regcache); | |
c906108c | 103 | |
a14ed312 | 104 | static void remote_open (char *name, int from_tty); |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 107 | |
75c99385 | 108 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 109 | |
de90e03d | 110 | static void remote_close (struct target_ops *self); |
c906108c | 111 | |
136d6dae | 112 | static void remote_mourn (struct target_ops *ops); |
c906108c | 113 | |
a14ed312 | 114 | static void extended_remote_restart (void); |
c906108c | 115 | |
136d6dae | 116 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 117 | |
a14ed312 | 118 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 119 | |
6d820c5c | 120 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 121 | |
a14ed312 | 122 | static int readchar (int timeout); |
c906108c | 123 | |
c33e31fd PA |
124 | static void remote_serial_write (const char *str, int len); |
125 | ||
7d85a9c0 | 126 | static void remote_kill (struct target_ops *ops); |
c906108c | 127 | |
6a109b6b | 128 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 129 | |
6a109b6b | 130 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 131 | |
6a109b6b TT |
132 | static void remote_async (struct target_ops *ops, |
133 | void (*callback) (enum inferior_event_type event_type, | |
134 | void *context), | |
135 | void *context); | |
75c99385 | 136 | |
934b9bac | 137 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
79d7f229 PA |
141 | static void set_general_thread (struct ptid ptid); |
142 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
1eab8a48 | 156 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 157 | |
a14ed312 | 158 | static int stubhex (int ch); |
c906108c | 159 | |
a14ed312 | 160 | static int hexnumstr (char *, ULONGEST); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 163 | |
a14ed312 | 164 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 165 | |
a14ed312 | 166 | static void print_packet (char *); |
c906108c | 167 | |
a14ed312 | 168 | static void compare_sections_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void packet_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 173 | |
39f77062 | 174 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 175 | |
a14ed312 | 176 | static void remote_find_new_threads (void); |
c906108c | 177 | |
a14ed312 | 178 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 179 | |
a14ed312 | 180 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 181 | |
5a2468f5 | 182 | struct packet_config; |
5a2468f5 | 183 | |
a14ed312 | 184 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 185 | |
d471ea57 | 186 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 187 | |
bb572ddd DJ |
188 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
189 | struct cmd_list_element *c); | |
190 | ||
191 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
192 | int from_tty, | |
193 | struct cmd_list_element *c, | |
194 | const char *value); | |
195 | ||
82f73884 PA |
196 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
197 | static ptid_t read_ptid (char *buf, char **obuf); | |
198 | ||
d914c394 SS |
199 | static void remote_set_permissions (void); |
200 | ||
d5551862 | 201 | struct remote_state; |
8bd200f1 TT |
202 | static int remote_get_trace_status (struct target_ops *self, |
203 | struct trace_status *ts); | |
d5551862 | 204 | |
00bf0b85 SS |
205 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
206 | ||
207 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
208 | ||
c8d104ad PA |
209 | static void remote_query_supported (void); |
210 | ||
36d25514 | 211 | static void remote_check_symbols (void); |
c8d104ad | 212 | |
a14ed312 | 213 | void _initialize_remote (void); |
c906108c | 214 | |
74531fed | 215 | struct stop_reply; |
74531fed | 216 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 217 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 218 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 219 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
220 | static int peek_stop_reply (ptid_t ptid); |
221 | ||
222 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 223 | |
e3594fd1 | 224 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 225 | |
d962ef82 DJ |
226 | static int remote_read_description_p (struct target_ops *target); |
227 | ||
176a6961 | 228 | static void remote_console_output (char *msg); |
dde08ee1 | 229 | |
efcc2da7 | 230 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 231 | |
78eff0ec | 232 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 233 | |
a6b151f1 DJ |
234 | /* For "remote". */ |
235 | ||
236 | static struct cmd_list_element *remote_cmdlist; | |
237 | ||
bb572ddd DJ |
238 | /* For "set remote" and "show remote". */ |
239 | ||
240 | static struct cmd_list_element *remote_set_cmdlist; | |
241 | static struct cmd_list_element *remote_show_cmdlist; | |
242 | ||
d458bd84 PA |
243 | /* Stub vCont actions support. |
244 | ||
245 | Each field is a boolean flag indicating whether the stub reports | |
246 | support for the corresponding action. */ | |
247 | ||
248 | struct vCont_action_support | |
249 | { | |
250 | /* vCont;t */ | |
251 | int t; | |
c1e36e3e PA |
252 | |
253 | /* vCont;r */ | |
254 | int r; | |
d458bd84 PA |
255 | }; |
256 | ||
c1e36e3e PA |
257 | /* Controls whether GDB is willing to use range stepping. */ |
258 | ||
259 | static int use_range_stepping = 1; | |
260 | ||
0d031856 TT |
261 | #define OPAQUETHREADBYTES 8 |
262 | ||
263 | /* a 64 bit opaque identifier */ | |
264 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
265 | ||
266 | /* About this many threadisds fit in a packet. */ | |
267 | ||
268 | #define MAXTHREADLISTRESULTS 32 | |
269 | ||
ea9c271d DJ |
270 | /* Description of the remote protocol state for the currently |
271 | connected target. This is per-target state, and independent of the | |
272 | selected architecture. */ | |
273 | ||
274 | struct remote_state | |
275 | { | |
276 | /* A buffer to use for incoming packets, and its current size. The | |
277 | buffer is grown dynamically for larger incoming packets. | |
278 | Outgoing packets may also be constructed in this buffer. | |
279 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
280 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
281 | packets. */ | |
282 | char *buf; | |
283 | long buf_size; | |
be2a5f71 | 284 | |
1e51243a PA |
285 | /* True if we're going through initial connection setup (finding out |
286 | about the remote side's threads, relocating symbols, etc.). */ | |
287 | int starting_up; | |
288 | ||
be2a5f71 DJ |
289 | /* If we negotiated packet size explicitly (and thus can bypass |
290 | heuristics for the largest packet size that will not overflow | |
291 | a buffer in the stub), this will be set to that packet size. | |
292 | Otherwise zero, meaning to use the guessed size. */ | |
293 | long explicit_packet_size; | |
2d717e4f DJ |
294 | |
295 | /* remote_wait is normally called when the target is running and | |
296 | waits for a stop reply packet. But sometimes we need to call it | |
297 | when the target is already stopped. We can send a "?" packet | |
298 | and have remote_wait read the response. Or, if we already have | |
299 | the response, we can stash it in BUF and tell remote_wait to | |
300 | skip calling getpkt. This flag is set when BUF contains a | |
301 | stop reply packet and the target is not waiting. */ | |
302 | int cached_wait_status; | |
a6f3e723 SL |
303 | |
304 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
305 | expect acks from each other. The connection is assumed to be | |
306 | reliable. */ | |
307 | int noack_mode; | |
82f73884 PA |
308 | |
309 | /* True if we're connected in extended remote mode. */ | |
310 | int extended; | |
311 | ||
312 | /* True if the stub reported support for multi-process | |
313 | extensions. */ | |
314 | int multi_process_aware; | |
e24a49d8 PA |
315 | |
316 | /* True if we resumed the target and we're waiting for the target to | |
317 | stop. In the mean time, we can't start another command/query. | |
318 | The remote server wouldn't be ready to process it, so we'd | |
319 | timeout waiting for a reply that would never come and eventually | |
320 | we'd close the connection. This can happen in asynchronous mode | |
321 | because we allow GDB commands while the target is running. */ | |
322 | int waiting_for_stop_reply; | |
74531fed PA |
323 | |
324 | /* True if the stub reports support for non-stop mode. */ | |
325 | int non_stop_aware; | |
326 | ||
d458bd84 PA |
327 | /* The status of the stub support for the various vCont actions. */ |
328 | struct vCont_action_support supports_vCont; | |
782b2b07 SS |
329 | |
330 | /* True if the stub reports support for conditional tracepoints. */ | |
331 | int cond_tracepoints; | |
3a29589a | 332 | |
3788aec7 LM |
333 | /* True if the stub reports support for target-side breakpoint |
334 | conditions. */ | |
335 | int cond_breakpoints; | |
336 | ||
d3ce09f5 SS |
337 | /* True if the stub reports support for target-side breakpoint |
338 | commands. */ | |
339 | int breakpoint_commands; | |
340 | ||
7a697b8d SS |
341 | /* True if the stub reports support for fast tracepoints. */ |
342 | int fast_tracepoints; | |
343 | ||
0fb4aa4b PA |
344 | /* True if the stub reports support for static tracepoints. */ |
345 | int static_tracepoints; | |
346 | ||
1e4d1764 YQ |
347 | /* True if the stub reports support for installing tracepoint while |
348 | tracing. */ | |
349 | int install_in_trace; | |
350 | ||
d5551862 SS |
351 | /* True if the stub can continue running a trace while GDB is |
352 | disconnected. */ | |
353 | int disconnected_tracing; | |
354 | ||
d248b706 KY |
355 | /* True if the stub reports support for enabling and disabling |
356 | tracepoints while a trace experiment is running. */ | |
357 | int enable_disable_tracepoints; | |
358 | ||
3065dfb6 SS |
359 | /* True if the stub can collect strings using tracenz bytecode. */ |
360 | int string_tracing; | |
361 | ||
ced63ec0 GB |
362 | /* True if the stub supports qXfer:libraries-svr4:read with a |
363 | non-empty annex. */ | |
364 | int augmented_libraries_svr4_read; | |
365 | ||
3a29589a DJ |
366 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
367 | responded to that. */ | |
368 | int ctrlc_pending_p; | |
5d93a237 TT |
369 | |
370 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
371 | remote_open knows that we don't have a file open when the program | |
372 | starts. */ | |
373 | struct serial *remote_desc; | |
47f8a51d TT |
374 | |
375 | /* These are the threads which we last sent to the remote system. The | |
376 | TID member will be -1 for all or -2 for not sent yet. */ | |
377 | ptid_t general_thread; | |
378 | ptid_t continue_thread; | |
262e1174 TT |
379 | |
380 | /* This is the traceframe which we last selected on the remote system. | |
381 | It will be -1 if no traceframe is selected. */ | |
382 | int remote_traceframe_number; | |
747dc59d TT |
383 | |
384 | char *last_pass_packet; | |
5e4a05c4 TT |
385 | |
386 | /* The last QProgramSignals packet sent to the target. We bypass | |
387 | sending a new program signals list down to the target if the new | |
388 | packet is exactly the same as the last we sent. IOW, we only let | |
389 | the target know about program signals list changes. */ | |
390 | char *last_program_signals_packet; | |
b73be471 TT |
391 | |
392 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
393 | |
394 | int last_sent_step; | |
8e88304f TT |
395 | |
396 | char *finished_object; | |
397 | char *finished_annex; | |
398 | ULONGEST finished_offset; | |
b80fafe3 TT |
399 | |
400 | /* Should we try the 'ThreadInfo' query packet? | |
401 | ||
402 | This variable (NOT available to the user: auto-detect only!) | |
403 | determines whether GDB will use the new, simpler "ThreadInfo" | |
404 | query or the older, more complex syntax for thread queries. | |
405 | This is an auto-detect variable (set to true at each connect, | |
406 | and set to false when the target fails to recognize it). */ | |
407 | int use_threadinfo_query; | |
408 | int use_threadextra_query; | |
88b496c3 TT |
409 | |
410 | void (*async_client_callback) (enum inferior_event_type event_type, | |
411 | void *context); | |
412 | void *async_client_context; | |
ee154bee TT |
413 | |
414 | /* This is set to the data address of the access causing the target | |
415 | to stop for a watchpoint. */ | |
416 | CORE_ADDR remote_watch_data_address; | |
417 | ||
418 | /* This is non-zero if target stopped for a watchpoint. */ | |
419 | int remote_stopped_by_watchpoint_p; | |
0d031856 TT |
420 | |
421 | threadref echo_nextthread; | |
422 | threadref nextthread; | |
423 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
424 | |
425 | /* The state of remote notification. */ | |
426 | struct remote_notif_state *notif_state; | |
ea9c271d DJ |
427 | }; |
428 | ||
dc146f7c VP |
429 | /* Private data that we'll store in (struct thread_info)->private. */ |
430 | struct private_thread_info | |
431 | { | |
432 | char *extra; | |
433 | int core; | |
434 | }; | |
435 | ||
436 | static void | |
437 | free_private_thread_info (struct private_thread_info *info) | |
438 | { | |
439 | xfree (info->extra); | |
440 | xfree (info); | |
441 | } | |
442 | ||
82f73884 PA |
443 | /* Returns true if the multi-process extensions are in effect. */ |
444 | static int | |
445 | remote_multi_process_p (struct remote_state *rs) | |
446 | { | |
901f9912 | 447 | return rs->multi_process_aware; |
82f73884 PA |
448 | } |
449 | ||
ea9c271d DJ |
450 | /* This data could be associated with a target, but we do not always |
451 | have access to the current target when we need it, so for now it is | |
452 | static. This will be fine for as long as only one target is in use | |
453 | at a time. */ | |
cf792862 | 454 | static struct remote_state *remote_state; |
ea9c271d DJ |
455 | |
456 | static struct remote_state * | |
0b83947e | 457 | get_remote_state_raw (void) |
ea9c271d | 458 | { |
cf792862 TT |
459 | return remote_state; |
460 | } | |
461 | ||
462 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
463 | return it. */ | |
464 | ||
465 | static struct remote_state * | |
466 | new_remote_state (void) | |
467 | { | |
468 | struct remote_state *result = XCNEW (struct remote_state); | |
469 | ||
470 | /* The default buffer size is unimportant; it will be expanded | |
471 | whenever a larger buffer is needed. */ | |
472 | result->buf_size = 400; | |
473 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 474 | result->remote_traceframe_number = -1; |
b73be471 | 475 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
476 | |
477 | return result; | |
ea9c271d DJ |
478 | } |
479 | ||
480 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 481 | |
ad10f812 AC |
482 | struct packet_reg |
483 | { | |
484 | long offset; /* Offset into G packet. */ | |
485 | long regnum; /* GDB's internal register number. */ | |
486 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 487 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 488 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 489 | at present. */ |
f5656ead | 490 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 491 | at present. */ |
ad10f812 AC |
492 | }; |
493 | ||
ea9c271d | 494 | struct remote_arch_state |
d01949b6 | 495 | { |
ad10f812 AC |
496 | /* Description of the remote protocol registers. */ |
497 | long sizeof_g_packet; | |
b323314b AC |
498 | |
499 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 500 | (making an array gdbarch_num_regs in size). */ |
b323314b | 501 | struct packet_reg *regs; |
ad10f812 | 502 | |
d01949b6 AC |
503 | /* This is the size (in chars) of the first response to the ``g'' |
504 | packet. It is used as a heuristic when determining the maximum | |
505 | size of memory-read and memory-write packets. A target will | |
506 | typically only reserve a buffer large enough to hold the ``g'' | |
507 | packet. The size does not include packet overhead (headers and | |
23860348 | 508 | trailers). */ |
d01949b6 AC |
509 | long actual_register_packet_size; |
510 | ||
511 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 512 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
513 | long remote_packet_size; |
514 | }; | |
515 | ||
35b1e5cc SS |
516 | /* Utility: generate error from an incoming stub packet. */ |
517 | static void | |
518 | trace_error (char *buf) | |
519 | { | |
520 | if (*buf++ != 'E') | |
521 | return; /* not an error msg */ | |
522 | switch (*buf) | |
523 | { | |
524 | case '1': /* malformed packet error */ | |
525 | if (*++buf == '0') /* general case: */ | |
526 | error (_("remote.c: error in outgoing packet.")); | |
527 | else | |
528 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
529 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
530 | default: |
531 | error (_("Target returns error code '%s'."), buf); | |
532 | } | |
533 | } | |
534 | ||
535 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
536 | static char * | |
537 | remote_get_noisy_reply (char **buf_p, | |
538 | long *sizeof_buf) | |
539 | { | |
540 | do /* Loop on reply from remote stub. */ | |
541 | { | |
542 | char *buf; | |
a744cf53 | 543 | |
0df8b418 | 544 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
545 | getpkt (buf_p, sizeof_buf, 0); |
546 | buf = *buf_p; | |
ad91cd99 | 547 | if (buf[0] == 'E') |
35b1e5cc | 548 | trace_error (buf); |
dde08ee1 PA |
549 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
550 | { | |
551 | ULONGEST ul; | |
552 | CORE_ADDR from, to, org_to; | |
553 | char *p, *pp; | |
554 | int adjusted_size = 0; | |
555 | volatile struct gdb_exception ex; | |
556 | ||
557 | p = buf + strlen ("qRelocInsn:"); | |
558 | pp = unpack_varlen_hex (p, &ul); | |
559 | if (*pp != ';') | |
cb91c06a | 560 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
561 | from = ul; |
562 | ||
563 | p = pp + 1; | |
a9cbf802 | 564 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
565 | to = ul; |
566 | ||
567 | org_to = to; | |
568 | ||
569 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
570 | { | |
f5656ead | 571 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
572 | } |
573 | if (ex.reason >= 0) | |
574 | { | |
575 | adjusted_size = to - org_to; | |
576 | ||
bba74b36 | 577 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
578 | putpkt (buf); |
579 | } | |
580 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
581 | { | |
582 | /* Propagate memory errors silently back to the target. | |
583 | The stub may have limited the range of addresses we | |
584 | can write to, for example. */ | |
585 | putpkt ("E01"); | |
586 | } | |
587 | else | |
588 | { | |
589 | /* Something unexpectedly bad happened. Be verbose so | |
590 | we can tell what, and propagate the error back to the | |
591 | stub, so it doesn't get stuck waiting for a | |
592 | response. */ | |
593 | exception_fprintf (gdb_stderr, ex, | |
594 | _("warning: relocating instruction: ")); | |
595 | putpkt ("E01"); | |
596 | } | |
597 | } | |
ad91cd99 | 598 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
599 | remote_console_output (buf + 1); /* 'O' message from stub */ |
600 | else | |
0df8b418 | 601 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
602 | } |
603 | while (1); | |
604 | } | |
3c3bea1c | 605 | |
d01949b6 AC |
606 | /* Handle for retreving the remote protocol data from gdbarch. */ |
607 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
608 | ||
ea9c271d DJ |
609 | static struct remote_arch_state * |
610 | get_remote_arch_state (void) | |
d01949b6 | 611 | { |
f5656ead | 612 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
613 | } |
614 | ||
0b83947e DJ |
615 | /* Fetch the global remote target state. */ |
616 | ||
617 | static struct remote_state * | |
618 | get_remote_state (void) | |
619 | { | |
620 | /* Make sure that the remote architecture state has been | |
621 | initialized, because doing so might reallocate rs->buf. Any | |
622 | function which calls getpkt also needs to be mindful of changes | |
623 | to rs->buf, but this call limits the number of places which run | |
624 | into trouble. */ | |
625 | get_remote_arch_state (); | |
626 | ||
627 | return get_remote_state_raw (); | |
628 | } | |
629 | ||
74ca34ce DJ |
630 | static int |
631 | compare_pnums (const void *lhs_, const void *rhs_) | |
632 | { | |
633 | const struct packet_reg * const *lhs = lhs_; | |
634 | const struct packet_reg * const *rhs = rhs_; | |
635 | ||
636 | if ((*lhs)->pnum < (*rhs)->pnum) | |
637 | return -1; | |
638 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
639 | return 0; | |
640 | else | |
641 | return 1; | |
642 | } | |
643 | ||
c21236dc PA |
644 | static int |
645 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 646 | { |
74ca34ce | 647 | int regnum, num_remote_regs, offset; |
74ca34ce | 648 | struct packet_reg **remote_regs; |
ea9c271d | 649 | |
4a22f64d | 650 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 651 | { |
c21236dc | 652 | struct packet_reg *r = ®s[regnum]; |
baef701f | 653 | |
4a22f64d | 654 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
655 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
656 | r->pnum = -1; | |
657 | else | |
658 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
659 | ||
b323314b | 660 | r->regnum = regnum; |
74ca34ce DJ |
661 | } |
662 | ||
663 | /* Define the g/G packet format as the contents of each register | |
664 | with a remote protocol number, in order of ascending protocol | |
665 | number. */ | |
666 | ||
4a22f64d | 667 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 668 | * sizeof (struct packet_reg *)); |
f57d151a | 669 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 670 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 671 | regnum++) |
c21236dc PA |
672 | if (regs[regnum].pnum != -1) |
673 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 674 | |
74ca34ce DJ |
675 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
676 | compare_pnums); | |
677 | ||
678 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
679 | { | |
680 | remote_regs[regnum]->in_g_packet = 1; | |
681 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 682 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
683 | } |
684 | ||
c21236dc PA |
685 | return offset; |
686 | } | |
687 | ||
688 | /* Given the architecture described by GDBARCH, return the remote | |
689 | protocol register's number and the register's offset in the g/G | |
690 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
691 | If the target does not have a mapping for REGNUM, return false, | |
692 | otherwise, return true. */ | |
693 | ||
694 | int | |
695 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
696 | int *pnum, int *poffset) | |
697 | { | |
698 | int sizeof_g_packet; | |
699 | struct packet_reg *regs; | |
700 | struct cleanup *old_chain; | |
701 | ||
702 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
703 | ||
704 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
705 | old_chain = make_cleanup (xfree, regs); | |
706 | ||
707 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
708 | ||
709 | *pnum = regs[regnum].pnum; | |
710 | *poffset = regs[regnum].offset; | |
711 | ||
712 | do_cleanups (old_chain); | |
713 | ||
714 | return *pnum != -1; | |
715 | } | |
716 | ||
717 | static void * | |
718 | init_remote_state (struct gdbarch *gdbarch) | |
719 | { | |
720 | struct remote_state *rs = get_remote_state_raw (); | |
721 | struct remote_arch_state *rsa; | |
722 | ||
723 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
724 | ||
725 | /* Use the architecture to build a regnum<->pnum table, which will be | |
726 | 1:1 unless a feature set specifies otherwise. */ | |
727 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
728 | gdbarch_num_regs (gdbarch), | |
729 | struct packet_reg); | |
730 | ||
74ca34ce DJ |
731 | /* Record the maximum possible size of the g packet - it may turn out |
732 | to be smaller. */ | |
c21236dc | 733 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 734 | |
0df8b418 | 735 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
736 | remote stubs have a hardwired buffer size of 400 bytes |
737 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
738 | as the maximum packet-size to ensure that the packet and an extra | |
739 | NUL character can always fit in the buffer. This stops GDB | |
740 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
741 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
742 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 743 | |
ea9c271d DJ |
744 | /* This one is filled in when a ``g'' packet is received. */ |
745 | rsa->actual_register_packet_size = 0; | |
746 | ||
747 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
748 | default, adjust the size accordingly. Remember that each byte is |
749 | encoded as two characters. 32 is the overhead for the packet | |
750 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 751 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 752 | little. */ |
ea9c271d DJ |
753 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
754 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 755 | |
ea9c271d DJ |
756 | /* Make sure that the packet buffer is plenty big enough for |
757 | this architecture. */ | |
758 | if (rs->buf_size < rsa->remote_packet_size) | |
759 | { | |
760 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 761 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 762 | } |
6d820c5c | 763 | |
ea9c271d DJ |
764 | return rsa; |
765 | } | |
766 | ||
767 | /* Return the current allowed size of a remote packet. This is | |
768 | inferred from the current architecture, and should be used to | |
769 | limit the length of outgoing packets. */ | |
770 | static long | |
771 | get_remote_packet_size (void) | |
772 | { | |
be2a5f71 | 773 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
774 | struct remote_arch_state *rsa = get_remote_arch_state (); |
775 | ||
be2a5f71 DJ |
776 | if (rs->explicit_packet_size) |
777 | return rs->explicit_packet_size; | |
778 | ||
ea9c271d | 779 | return rsa->remote_packet_size; |
d01949b6 AC |
780 | } |
781 | ||
ad10f812 | 782 | static struct packet_reg * |
ea9c271d | 783 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 784 | { |
f5656ead | 785 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
786 | return NULL; |
787 | else | |
ad10f812 | 788 | { |
ea9c271d | 789 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 790 | |
b323314b AC |
791 | gdb_assert (r->regnum == regnum); |
792 | return r; | |
ad10f812 | 793 | } |
ad10f812 AC |
794 | } |
795 | ||
796 | static struct packet_reg * | |
ea9c271d | 797 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 798 | { |
b323314b | 799 | int i; |
a744cf53 | 800 | |
f5656ead | 801 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 802 | { |
ea9c271d | 803 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 804 | |
b323314b AC |
805 | if (r->pnum == pnum) |
806 | return r; | |
ad10f812 AC |
807 | } |
808 | return NULL; | |
d01949b6 AC |
809 | } |
810 | ||
c906108c SS |
811 | static struct target_ops remote_ops; |
812 | ||
813 | static struct target_ops extended_remote_ops; | |
814 | ||
6426a772 JM |
815 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
816 | ``forever'' still use the normal timeout mechanism. This is | |
817 | currently used by the ASYNC code to guarentee that target reads | |
818 | during the initial connect always time-out. Once getpkt has been | |
819 | modified to return a timeout indication and, in turn | |
820 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 821 | this can go away. */ |
6426a772 JM |
822 | static int wait_forever_enabled_p = 1; |
823 | ||
9a7071a8 JB |
824 | /* Allow the user to specify what sequence to send to the remote |
825 | when he requests a program interruption: Although ^C is usually | |
826 | what remote systems expect (this is the default, here), it is | |
827 | sometimes preferable to send a break. On other systems such | |
828 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
829 | is required in order to interrupt the execution. */ | |
830 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
831 | const char interrupt_sequence_break[] = "BREAK"; | |
832 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 833 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
834 | { |
835 | interrupt_sequence_control_c, | |
836 | interrupt_sequence_break, | |
837 | interrupt_sequence_break_g, | |
838 | NULL | |
839 | }; | |
840 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
841 | ||
842 | static void | |
843 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
844 | struct cmd_list_element *c, | |
845 | const char *value) | |
846 | { | |
847 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
848 | fprintf_filtered (file, | |
849 | _("Send the ASCII ETX character (Ctrl-c) " | |
850 | "to the remote target to interrupt the " | |
851 | "execution of the program.\n")); | |
852 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
853 | fprintf_filtered (file, | |
854 | _("send a break signal to the remote target " | |
855 | "to interrupt the execution of the program.\n")); | |
856 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
857 | fprintf_filtered (file, | |
858 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
859 | "the remote target to interrupt the execution " | |
860 | "of Linux kernel.\n")); | |
861 | else | |
862 | internal_error (__FILE__, __LINE__, | |
863 | _("Invalid value for interrupt_sequence_mode: %s."), | |
864 | interrupt_sequence_mode); | |
865 | } | |
6426a772 | 866 | |
9a7071a8 JB |
867 | /* This boolean variable specifies whether interrupt_sequence is sent |
868 | to the remote target when gdb connects to it. | |
869 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
870 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
871 | static int interrupt_on_connect = 0; | |
c906108c | 872 | |
9a7071a8 JB |
873 | /* This variable is used to implement the "set/show remotebreak" commands. |
874 | Since these commands are now deprecated in favor of "set/show remote | |
875 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
876 | static int remote_break; |
877 | ||
9a7071a8 JB |
878 | static void |
879 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
880 | { | |
881 | if (remote_break) | |
882 | interrupt_sequence_mode = interrupt_sequence_break; | |
883 | else | |
884 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
885 | } | |
886 | ||
887 | static void | |
888 | show_remotebreak (struct ui_file *file, int from_tty, | |
889 | struct cmd_list_element *c, | |
890 | const char *value) | |
891 | { | |
892 | } | |
893 | ||
c906108c SS |
894 | /* This variable sets the number of bits in an address that are to be |
895 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 896 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
897 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
898 | initial implementation of remote.c restricted the address sent in | |
899 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
900 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
901 | address was never sent. Since fixing this bug may cause a break in | |
902 | some remote targets this variable is principly provided to | |
23860348 | 903 | facilitate backward compatibility. */ |
c906108c | 904 | |
883b9c6c | 905 | static unsigned int remote_address_size; |
c906108c | 906 | |
75c99385 PA |
907 | /* Temporary to track who currently owns the terminal. See |
908 | remote_terminal_* for more details. */ | |
6426a772 JM |
909 | |
910 | static int remote_async_terminal_ours_p; | |
911 | ||
2d717e4f DJ |
912 | /* The executable file to use for "run" on the remote side. */ |
913 | ||
914 | static char *remote_exec_file = ""; | |
915 | ||
11cf8741 | 916 | \f |
11cf8741 | 917 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
918 | memory read/write packet. MIN (rsa->remote_packet_size, |
919 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 920 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
921 | (speed up transfers). The variables ``preferred_*'' (the user |
922 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 923 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
924 | |
925 | struct memory_packet_config | |
926 | { | |
927 | char *name; | |
928 | long size; | |
929 | int fixed_p; | |
930 | }; | |
931 | ||
932 | /* Compute the current size of a read/write packet. Since this makes | |
933 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
934 | ||
935 | static long | |
936 | get_memory_packet_size (struct memory_packet_config *config) | |
937 | { | |
d01949b6 | 938 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
939 | struct remote_arch_state *rsa = get_remote_arch_state (); |
940 | ||
11cf8741 JM |
941 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
942 | law?) that some hosts don't cope very well with large alloca() | |
943 | calls. Eventually the alloca() code will be replaced by calls to | |
944 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 945 | be lifted or removed. */ |
11cf8741 JM |
946 | #ifndef MAX_REMOTE_PACKET_SIZE |
947 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
948 | #endif | |
3de11b2e | 949 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 950 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 951 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
952 | #endif |
953 | long what_they_get; | |
954 | if (config->fixed_p) | |
955 | { | |
956 | if (config->size <= 0) | |
957 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
958 | else | |
959 | what_they_get = config->size; | |
960 | } | |
961 | else | |
962 | { | |
ea9c271d | 963 | what_they_get = get_remote_packet_size (); |
23860348 | 964 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
965 | if (config->size > 0 |
966 | && what_they_get > config->size) | |
967 | what_they_get = config->size; | |
be2a5f71 DJ |
968 | |
969 | /* Limit it to the size of the targets ``g'' response unless we have | |
970 | permission from the stub to use a larger packet size. */ | |
971 | if (rs->explicit_packet_size == 0 | |
972 | && rsa->actual_register_packet_size > 0 | |
973 | && what_they_get > rsa->actual_register_packet_size) | |
974 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
975 | } |
976 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
977 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
978 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
979 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
980 | |
981 | /* Make sure there is room in the global buffer for this packet | |
982 | (including its trailing NUL byte). */ | |
983 | if (rs->buf_size < what_they_get + 1) | |
984 | { | |
985 | rs->buf_size = 2 * what_they_get; | |
986 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
987 | } | |
988 | ||
11cf8741 JM |
989 | return what_they_get; |
990 | } | |
991 | ||
0df8b418 | 992 | /* Update the size of a read/write packet. If they user wants |
23860348 | 993 | something really big then do a sanity check. */ |
11cf8741 JM |
994 | |
995 | static void | |
996 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
997 | { | |
998 | int fixed_p = config->fixed_p; | |
999 | long size = config->size; | |
a744cf53 | 1000 | |
11cf8741 | 1001 | if (args == NULL) |
8a3fe4f8 | 1002 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1003 | else if (strcmp (args, "hard") == 0 |
1004 | || strcmp (args, "fixed") == 0) | |
1005 | fixed_p = 1; | |
1006 | else if (strcmp (args, "soft") == 0 | |
1007 | || strcmp (args, "limit") == 0) | |
1008 | fixed_p = 0; | |
1009 | else | |
1010 | { | |
1011 | char *end; | |
a744cf53 | 1012 | |
11cf8741 JM |
1013 | size = strtoul (args, &end, 0); |
1014 | if (args == end) | |
8a3fe4f8 | 1015 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
1016 | #if 0 |
1017 | /* Instead of explicitly capping the size of a packet to | |
1018 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1019 | instead allowed to set the size to something arbitrarily | |
23860348 | 1020 | large. */ |
11cf8741 | 1021 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 1022 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
1023 | #endif |
1024 | } | |
23860348 | 1025 | /* Extra checks? */ |
11cf8741 JM |
1026 | if (fixed_p && !config->fixed_p) |
1027 | { | |
e2e0b3e5 AC |
1028 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1029 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1030 | config->name, size)) |
8a3fe4f8 | 1031 | error (_("Packet size not changed.")); |
11cf8741 | 1032 | } |
23860348 | 1033 | /* Update the config. */ |
11cf8741 JM |
1034 | config->fixed_p = fixed_p; |
1035 | config->size = size; | |
1036 | } | |
1037 | ||
1038 | static void | |
1039 | show_memory_packet_size (struct memory_packet_config *config) | |
1040 | { | |
a3f17187 | 1041 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1042 | if (config->fixed_p) |
a3f17187 | 1043 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1044 | get_memory_packet_size (config)); |
1045 | else | |
a3f17187 | 1046 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1047 | get_memory_packet_size (config)); |
1048 | } | |
1049 | ||
1050 | static struct memory_packet_config memory_write_packet_config = | |
1051 | { | |
1052 | "memory-write-packet-size", | |
1053 | }; | |
1054 | ||
1055 | static void | |
1056 | set_memory_write_packet_size (char *args, int from_tty) | |
1057 | { | |
1058 | set_memory_packet_size (args, &memory_write_packet_config); | |
1059 | } | |
1060 | ||
1061 | static void | |
1062 | show_memory_write_packet_size (char *args, int from_tty) | |
1063 | { | |
1064 | show_memory_packet_size (&memory_write_packet_config); | |
1065 | } | |
1066 | ||
1067 | static long | |
1068 | get_memory_write_packet_size (void) | |
1069 | { | |
1070 | return get_memory_packet_size (&memory_write_packet_config); | |
1071 | } | |
1072 | ||
1073 | static struct memory_packet_config memory_read_packet_config = | |
1074 | { | |
1075 | "memory-read-packet-size", | |
1076 | }; | |
1077 | ||
1078 | static void | |
1079 | set_memory_read_packet_size (char *args, int from_tty) | |
1080 | { | |
1081 | set_memory_packet_size (args, &memory_read_packet_config); | |
1082 | } | |
1083 | ||
1084 | static void | |
1085 | show_memory_read_packet_size (char *args, int from_tty) | |
1086 | { | |
1087 | show_memory_packet_size (&memory_read_packet_config); | |
1088 | } | |
1089 | ||
1090 | static long | |
1091 | get_memory_read_packet_size (void) | |
1092 | { | |
1093 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1094 | |
11cf8741 JM |
1095 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1096 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1097 | increased beyond this. */ |
1098 | if (size > get_remote_packet_size ()) | |
1099 | size = get_remote_packet_size (); | |
11cf8741 JM |
1100 | return size; |
1101 | } | |
1102 | ||
11cf8741 | 1103 | \f |
5a2468f5 | 1104 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1105 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1106 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1107 | |
1108 | enum packet_support | |
1109 | { | |
1110 | PACKET_SUPPORT_UNKNOWN = 0, | |
1111 | PACKET_ENABLE, | |
1112 | PACKET_DISABLE | |
1113 | }; | |
1114 | ||
5a2468f5 JM |
1115 | struct packet_config |
1116 | { | |
bb572ddd DJ |
1117 | const char *name; |
1118 | const char *title; | |
7f19b9a2 | 1119 | enum auto_boolean detect; |
5a2468f5 JM |
1120 | enum packet_support support; |
1121 | }; | |
1122 | ||
d471ea57 | 1123 | /* Analyze a packet's return value and update the packet config |
23860348 | 1124 | accordingly. */ |
d471ea57 AC |
1125 | |
1126 | enum packet_result | |
1127 | { | |
1128 | PACKET_ERROR, | |
1129 | PACKET_OK, | |
1130 | PACKET_UNKNOWN | |
1131 | }; | |
1132 | ||
5a2468f5 | 1133 | static void |
d471ea57 | 1134 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1135 | { |
d471ea57 AC |
1136 | switch (config->detect) |
1137 | { | |
7f19b9a2 | 1138 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1139 | config->support = PACKET_ENABLE; |
1140 | break; | |
7f19b9a2 | 1141 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1142 | config->support = PACKET_DISABLE; |
1143 | break; | |
7f19b9a2 | 1144 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1145 | config->support = PACKET_SUPPORT_UNKNOWN; |
1146 | break; | |
1147 | } | |
5a2468f5 JM |
1148 | } |
1149 | ||
1150 | static void | |
fba45db2 | 1151 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1152 | { |
1153 | char *support = "internal-error"; | |
a744cf53 | 1154 | |
5a2468f5 JM |
1155 | switch (config->support) |
1156 | { | |
1157 | case PACKET_ENABLE: | |
1158 | support = "enabled"; | |
1159 | break; | |
1160 | case PACKET_DISABLE: | |
1161 | support = "disabled"; | |
1162 | break; | |
1163 | case PACKET_SUPPORT_UNKNOWN: | |
1164 | support = "unknown"; | |
1165 | break; | |
1166 | } | |
1167 | switch (config->detect) | |
1168 | { | |
7f19b9a2 | 1169 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1170 | printf_filtered (_("Support for the `%s' packet " |
1171 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1172 | config->name, support); |
5a2468f5 | 1173 | break; |
7f19b9a2 AC |
1174 | case AUTO_BOOLEAN_TRUE: |
1175 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1176 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1177 | config->name, support); | |
8e248173 | 1178 | break; |
5a2468f5 JM |
1179 | } |
1180 | } | |
1181 | ||
1182 | static void | |
bb572ddd DJ |
1183 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1184 | const char *title, int legacy) | |
d471ea57 | 1185 | { |
5a2468f5 JM |
1186 | char *set_doc; |
1187 | char *show_doc; | |
d471ea57 | 1188 | char *cmd_name; |
3ed07be4 | 1189 | |
5a2468f5 JM |
1190 | config->name = name; |
1191 | config->title = title; | |
7f19b9a2 | 1192 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1193 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1194 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1195 | name, title); | |
3e43a32a MS |
1196 | show_doc = xstrprintf ("Show current use of remote " |
1197 | "protocol `%s' (%s) packet", | |
b435e160 | 1198 | name, title); |
d471ea57 | 1199 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1200 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1201 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1202 | &config->detect, set_doc, |
1203 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1204 | set_remote_protocol_packet_cmd, |
1205 | show_remote_protocol_packet_cmd, | |
1206 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1207 | /* The command code copies the documentation strings. */ |
1208 | xfree (set_doc); | |
1209 | xfree (show_doc); | |
23860348 | 1210 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1211 | if (legacy) |
1212 | { | |
1213 | char *legacy_name; | |
a744cf53 | 1214 | |
b435e160 | 1215 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1216 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1217 | &remote_set_cmdlist); |
d471ea57 | 1218 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1219 | &remote_show_cmdlist); |
d471ea57 | 1220 | } |
5a2468f5 JM |
1221 | } |
1222 | ||
d471ea57 | 1223 | static enum packet_result |
a76d924d | 1224 | packet_check_result (const char *buf) |
5a2468f5 | 1225 | { |
d471ea57 | 1226 | if (buf[0] != '\0') |
5a2468f5 | 1227 | { |
d471ea57 | 1228 | /* The stub recognized the packet request. Check that the |
23860348 | 1229 | operation succeeded. */ |
a76d924d DJ |
1230 | if (buf[0] == 'E' |
1231 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1232 | && buf[3] == '\0') | |
1233 | /* "Enn" - definitly an error. */ | |
1234 | return PACKET_ERROR; | |
1235 | ||
1236 | /* Always treat "E." as an error. This will be used for | |
1237 | more verbose error messages, such as E.memtypes. */ | |
1238 | if (buf[0] == 'E' && buf[1] == '.') | |
1239 | return PACKET_ERROR; | |
1240 | ||
1241 | /* The packet may or may not be OK. Just assume it is. */ | |
1242 | return PACKET_OK; | |
1243 | } | |
1244 | else | |
1245 | /* The stub does not support the packet. */ | |
1246 | return PACKET_UNKNOWN; | |
1247 | } | |
1248 | ||
1249 | static enum packet_result | |
1250 | packet_ok (const char *buf, struct packet_config *config) | |
1251 | { | |
1252 | enum packet_result result; | |
1253 | ||
1254 | result = packet_check_result (buf); | |
1255 | switch (result) | |
1256 | { | |
1257 | case PACKET_OK: | |
1258 | case PACKET_ERROR: | |
1259 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1260 | switch (config->support) |
1261 | { | |
1262 | case PACKET_SUPPORT_UNKNOWN: | |
1263 | if (remote_debug) | |
1264 | fprintf_unfiltered (gdb_stdlog, | |
1265 | "Packet %s (%s) is supported\n", | |
1266 | config->name, config->title); | |
1267 | config->support = PACKET_ENABLE; | |
1268 | break; | |
1269 | case PACKET_DISABLE: | |
8e65ff28 | 1270 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1271 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1272 | break; |
1273 | case PACKET_ENABLE: | |
1274 | break; | |
1275 | } | |
a76d924d DJ |
1276 | break; |
1277 | case PACKET_UNKNOWN: | |
23860348 | 1278 | /* The stub does not support the packet. */ |
d471ea57 AC |
1279 | switch (config->support) |
1280 | { | |
1281 | case PACKET_ENABLE: | |
7f19b9a2 | 1282 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1283 | /* If the stub previously indicated that the packet was |
23860348 | 1284 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1285 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1286 | config->name, config->title); |
1287 | else | |
23860348 | 1288 | /* The user set it wrong. */ |
8a3fe4f8 | 1289 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1290 | config->name, config->title); |
1291 | break; | |
1292 | case PACKET_SUPPORT_UNKNOWN: | |
1293 | if (remote_debug) | |
1294 | fprintf_unfiltered (gdb_stdlog, | |
1295 | "Packet %s (%s) is NOT supported\n", | |
1296 | config->name, config->title); | |
1297 | config->support = PACKET_DISABLE; | |
1298 | break; | |
1299 | case PACKET_DISABLE: | |
1300 | break; | |
1301 | } | |
a76d924d | 1302 | break; |
5a2468f5 | 1303 | } |
a76d924d DJ |
1304 | |
1305 | return result; | |
5a2468f5 JM |
1306 | } |
1307 | ||
444abaca DJ |
1308 | enum { |
1309 | PACKET_vCont = 0, | |
1310 | PACKET_X, | |
1311 | PACKET_qSymbol, | |
1312 | PACKET_P, | |
1313 | PACKET_p, | |
1314 | PACKET_Z0, | |
1315 | PACKET_Z1, | |
1316 | PACKET_Z2, | |
1317 | PACKET_Z3, | |
1318 | PACKET_Z4, | |
a6b151f1 DJ |
1319 | PACKET_vFile_open, |
1320 | PACKET_vFile_pread, | |
1321 | PACKET_vFile_pwrite, | |
1322 | PACKET_vFile_close, | |
1323 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1324 | PACKET_vFile_readlink, |
0876f84a | 1325 | PACKET_qXfer_auxv, |
23181151 | 1326 | PACKET_qXfer_features, |
cfa9d6d9 | 1327 | PACKET_qXfer_libraries, |
2268b414 | 1328 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1329 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1330 | PACKET_qXfer_spu_read, |
1331 | PACKET_qXfer_spu_write, | |
07e059b5 | 1332 | PACKET_qXfer_osdata, |
dc146f7c | 1333 | PACKET_qXfer_threads, |
0fb4aa4b | 1334 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1335 | PACKET_qXfer_traceframe_info, |
169081d0 | 1336 | PACKET_qXfer_uib, |
711e434b | 1337 | PACKET_qGetTIBAddr, |
444abaca | 1338 | PACKET_qGetTLSAddr, |
be2a5f71 | 1339 | PACKET_qSupported, |
bd3eecc3 | 1340 | PACKET_qTStatus, |
89be2091 | 1341 | PACKET_QPassSignals, |
9b224c5e | 1342 | PACKET_QProgramSignals, |
08388c79 | 1343 | PACKET_qSearch_memory, |
2d717e4f DJ |
1344 | PACKET_vAttach, |
1345 | PACKET_vRun, | |
a6f3e723 | 1346 | PACKET_QStartNoAckMode, |
82f73884 | 1347 | PACKET_vKill, |
4aa995e1 PA |
1348 | PACKET_qXfer_siginfo_read, |
1349 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1350 | PACKET_qAttached, |
782b2b07 | 1351 | PACKET_ConditionalTracepoints, |
3788aec7 | 1352 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1353 | PACKET_BreakpointCommands, |
7a697b8d | 1354 | PACKET_FastTracepoints, |
0fb4aa4b | 1355 | PACKET_StaticTracepoints, |
1e4d1764 | 1356 | PACKET_InstallInTrace, |
40ab02ce MS |
1357 | PACKET_bc, |
1358 | PACKET_bs, | |
409873ef | 1359 | PACKET_TracepointSource, |
d914c394 | 1360 | PACKET_QAllow, |
78d85199 | 1361 | PACKET_qXfer_fdpic, |
03583c20 | 1362 | PACKET_QDisableRandomization, |
d1feda86 | 1363 | PACKET_QAgent, |
f6f899bf | 1364 | PACKET_QTBuffer_size, |
9accd112 MM |
1365 | PACKET_Qbtrace_off, |
1366 | PACKET_Qbtrace_bts, | |
1367 | PACKET_qXfer_btrace, | |
444abaca DJ |
1368 | PACKET_MAX |
1369 | }; | |
506fb367 | 1370 | |
444abaca | 1371 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1372 | |
1373 | static void | |
444abaca DJ |
1374 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1375 | struct cmd_list_element *c) | |
dc8acb97 | 1376 | { |
444abaca | 1377 | struct packet_config *packet; |
dc8acb97 | 1378 | |
444abaca DJ |
1379 | for (packet = remote_protocol_packets; |
1380 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1381 | packet++) | |
1382 | { | |
1383 | if (&packet->detect == c->var) | |
1384 | { | |
1385 | update_packet_config (packet); | |
1386 | return; | |
1387 | } | |
1388 | } | |
9b20d036 | 1389 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1390 | c->name); |
dc8acb97 MS |
1391 | } |
1392 | ||
5a2468f5 | 1393 | static void |
444abaca DJ |
1394 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1395 | struct cmd_list_element *c, | |
1396 | const char *value) | |
5a2468f5 | 1397 | { |
444abaca | 1398 | struct packet_config *packet; |
5a2468f5 | 1399 | |
444abaca DJ |
1400 | for (packet = remote_protocol_packets; |
1401 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1402 | packet++) | |
1403 | { | |
1404 | if (&packet->detect == c->var) | |
1405 | { | |
1406 | show_packet_config_cmd (packet); | |
1407 | return; | |
1408 | } | |
1409 | } | |
9b20d036 | 1410 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1411 | c->name); |
5a2468f5 JM |
1412 | } |
1413 | ||
d471ea57 AC |
1414 | /* Should we try one of the 'Z' requests? */ |
1415 | ||
1416 | enum Z_packet_type | |
1417 | { | |
1418 | Z_PACKET_SOFTWARE_BP, | |
1419 | Z_PACKET_HARDWARE_BP, | |
1420 | Z_PACKET_WRITE_WP, | |
1421 | Z_PACKET_READ_WP, | |
1422 | Z_PACKET_ACCESS_WP, | |
1423 | NR_Z_PACKET_TYPES | |
1424 | }; | |
96baa820 | 1425 | |
d471ea57 | 1426 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1427 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1428 | |
7f19b9a2 | 1429 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1430 | |
1431 | static void | |
fba45db2 KB |
1432 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1433 | struct cmd_list_element *c) | |
96baa820 | 1434 | { |
d471ea57 | 1435 | int i; |
a744cf53 | 1436 | |
d471ea57 AC |
1437 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1438 | { | |
444abaca DJ |
1439 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1440 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1441 | } |
96baa820 JM |
1442 | } |
1443 | ||
1444 | static void | |
08546159 AC |
1445 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1446 | struct cmd_list_element *c, | |
1447 | const char *value) | |
96baa820 | 1448 | { |
d471ea57 | 1449 | int i; |
a744cf53 | 1450 | |
d471ea57 AC |
1451 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1452 | { | |
444abaca | 1453 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1454 | } |
96baa820 JM |
1455 | } |
1456 | ||
23860348 | 1457 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1458 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1459 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1460 | |
74531fed PA |
1461 | \f |
1462 | /* Asynchronous signal handle registered as event loop source for | |
1463 | when we have pending events ready to be passed to the core. */ | |
1464 | ||
1465 | static struct async_event_handler *remote_async_inferior_event_token; | |
1466 | ||
c906108c SS |
1467 | \f |
1468 | ||
79d7f229 PA |
1469 | static ptid_t magic_null_ptid; |
1470 | static ptid_t not_sent_ptid; | |
1471 | static ptid_t any_thread_ptid; | |
1472 | ||
0b16c5cf PA |
1473 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1474 | detach instead of killing it when bailing out). */ | |
1475 | ||
1476 | static int | |
1477 | remote_query_attached (int pid) | |
1478 | { | |
1479 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1480 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1481 | |
1482 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1483 | return 0; | |
1484 | ||
1485 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1486 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1487 | else |
bba74b36 | 1488 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1489 | |
1490 | putpkt (rs->buf); | |
1491 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1492 | ||
1493 | switch (packet_ok (rs->buf, | |
1554e9be | 1494 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1495 | { |
1496 | case PACKET_OK: | |
1497 | if (strcmp (rs->buf, "1") == 0) | |
1498 | return 1; | |
1499 | break; | |
1500 | case PACKET_ERROR: | |
1501 | warning (_("Remote failure reply: %s"), rs->buf); | |
1502 | break; | |
1503 | case PACKET_UNKNOWN: | |
1504 | break; | |
1505 | } | |
1506 | ||
1507 | return 0; | |
1508 | } | |
1509 | ||
49c62f2e PA |
1510 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1511 | has been invented by GDB, instead of reported by the target. Since | |
1512 | we can be connected to a remote system before before knowing about | |
1513 | any inferior, mark the target with execution when we find the first | |
1514 | inferior. If ATTACHED is 1, then we had just attached to this | |
1515 | inferior. If it is 0, then we just created this inferior. If it | |
1516 | is -1, then try querying the remote stub to find out if it had | |
1517 | attached to the inferior or not. */ | |
1941c569 PA |
1518 | |
1519 | static struct inferior * | |
49c62f2e | 1520 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1521 | { |
1941c569 PA |
1522 | struct inferior *inf; |
1523 | ||
0b16c5cf PA |
1524 | /* Check whether this process we're learning about is to be |
1525 | considered attached, or if is to be considered to have been | |
1526 | spawned by the stub. */ | |
1527 | if (attached == -1) | |
1528 | attached = remote_query_attached (pid); | |
1529 | ||
f5656ead | 1530 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1531 | { |
1532 | /* If the target shares code across all inferiors, then every | |
1533 | attach adds a new inferior. */ | |
1534 | inf = add_inferior (pid); | |
1535 | ||
1536 | /* ... and every inferior is bound to the same program space. | |
1537 | However, each inferior may still have its own address | |
1538 | space. */ | |
1539 | inf->aspace = maybe_new_address_space (); | |
1540 | inf->pspace = current_program_space; | |
1541 | } | |
1542 | else | |
1543 | { | |
1544 | /* In the traditional debugging scenario, there's a 1-1 match | |
1545 | between program/address spaces. We simply bind the inferior | |
1546 | to the program space's address space. */ | |
1547 | inf = current_inferior (); | |
1548 | inferior_appeared (inf, pid); | |
1549 | } | |
1941c569 | 1550 | |
0b16c5cf | 1551 | inf->attach_flag = attached; |
49c62f2e | 1552 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1553 | |
1941c569 PA |
1554 | return inf; |
1555 | } | |
1556 | ||
1557 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1558 | according to RUNNING. */ | |
1559 | ||
c906108c | 1560 | static void |
1941c569 | 1561 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1562 | { |
b7ea362b PA |
1563 | struct remote_state *rs = get_remote_state (); |
1564 | ||
1565 | /* GDB historically didn't pull threads in the initial connection | |
1566 | setup. If the remote target doesn't even have a concept of | |
1567 | threads (e.g., a bare-metal target), even if internally we | |
1568 | consider that a single-threaded target, mentioning a new thread | |
1569 | might be confusing to the user. Be silent then, preserving the | |
1570 | age old behavior. */ | |
1571 | if (rs->starting_up) | |
1572 | add_thread_silent (ptid); | |
1573 | else | |
1574 | add_thread (ptid); | |
1941c569 PA |
1575 | |
1576 | set_executing (ptid, running); | |
1577 | set_running (ptid, running); | |
1578 | } | |
1579 | ||
1580 | /* Come here when we learn about a thread id from the remote target. | |
1581 | It may be the first time we hear about such thread, so take the | |
1582 | opportunity to add it to GDB's thread list. In case this is the | |
1583 | first time we're noticing its corresponding inferior, add it to | |
1584 | GDB's inferior list as well. */ | |
1585 | ||
1586 | static void | |
1587 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1588 | { | |
c906108c SS |
1589 | /* If this is a new thread, add it to GDB's thread list. |
1590 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1591 | |
1592 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1593 | { | |
1594 | /* We're seeing an event on a thread id we knew had exited. | |
1595 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1596 | remote_add_thread (currthread, running); |
82f73884 PA |
1597 | return; |
1598 | } | |
1599 | ||
79d7f229 | 1600 | if (!in_thread_list (currthread)) |
c0a2216e | 1601 | { |
1941c569 | 1602 | struct inferior *inf = NULL; |
bad34192 | 1603 | int pid = ptid_get_pid (currthread); |
1941c569 | 1604 | |
bad34192 PA |
1605 | if (ptid_is_pid (inferior_ptid) |
1606 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1607 | { |
1608 | /* inferior_ptid has no thread member yet. This can happen | |
1609 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1610 | stub doesn't support qC. This is the first stop reported | |
1611 | after an attach, so this is the main thread. Update the | |
1612 | ptid in the thread list. */ | |
bad34192 PA |
1613 | if (in_thread_list (pid_to_ptid (pid))) |
1614 | thread_change_ptid (inferior_ptid, currthread); | |
1615 | else | |
1616 | { | |
1617 | remote_add_thread (currthread, running); | |
1618 | inferior_ptid = currthread; | |
1619 | } | |
dc146f7c | 1620 | return; |
c0a2216e | 1621 | } |
82f73884 PA |
1622 | |
1623 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1624 | { |
1625 | /* inferior_ptid is not set yet. This can happen with the | |
1626 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1627 | doesn't support qC. This is the first stop reported | |
1628 | after an attach, so this is the main thread. Update the | |
1629 | ptid in the thread list. */ | |
dc146f7c | 1630 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1631 | return; |
c0a2216e | 1632 | } |
82f73884 | 1633 | |
29c87f7f PA |
1634 | /* When connecting to a target remote, or to a target |
1635 | extended-remote which already was debugging an inferior, we | |
1636 | may not know about it yet. Add it before adding its child | |
1637 | thread, so notifications are emitted in a sensible order. */ | |
1638 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1639 | { |
1640 | struct remote_state *rs = get_remote_state (); | |
1641 | int fake_pid_p = !remote_multi_process_p (rs); | |
1642 | ||
1643 | inf = remote_add_inferior (fake_pid_p, | |
1644 | ptid_get_pid (currthread), -1); | |
1645 | } | |
29c87f7f | 1646 | |
82f73884 | 1647 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1648 | remote_add_thread (currthread, running); |
1649 | ||
1650 | /* If we found a new inferior, let the common code do whatever | |
1651 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1652 | breakpoints), unless we're just setting up an all-stop |
1653 | connection. */ | |
1941c569 | 1654 | if (inf != NULL) |
b7ea362b PA |
1655 | { |
1656 | struct remote_state *rs = get_remote_state (); | |
1657 | ||
1658 | if (non_stop || !rs->starting_up) | |
1659 | notice_new_inferior (currthread, running, 0); | |
1660 | } | |
c0a2216e | 1661 | } |
c906108c SS |
1662 | } |
1663 | ||
dc146f7c VP |
1664 | /* Return the private thread data, creating it if necessary. */ |
1665 | ||
70221824 | 1666 | static struct private_thread_info * |
dc146f7c VP |
1667 | demand_private_info (ptid_t ptid) |
1668 | { | |
1669 | struct thread_info *info = find_thread_ptid (ptid); | |
1670 | ||
1671 | gdb_assert (info); | |
1672 | ||
1673 | if (!info->private) | |
1674 | { | |
1675 | info->private = xmalloc (sizeof (*(info->private))); | |
1676 | info->private_dtor = free_private_thread_info; | |
1677 | info->private->core = -1; | |
1678 | info->private->extra = 0; | |
1679 | } | |
1680 | ||
1681 | return info->private; | |
1682 | } | |
1683 | ||
74531fed PA |
1684 | /* Call this function as a result of |
1685 | 1) A halt indication (T packet) containing a thread id | |
1686 | 2) A direct query of currthread | |
0df8b418 | 1687 | 3) Successful execution of set thread */ |
74531fed PA |
1688 | |
1689 | static void | |
47f8a51d | 1690 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1691 | { |
47f8a51d | 1692 | rs->general_thread = currthread; |
74531fed PA |
1693 | } |
1694 | ||
89be2091 DJ |
1695 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1696 | it can simply pass through to the inferior without reporting. */ | |
1697 | ||
1698 | static void | |
94bedb42 TT |
1699 | remote_pass_signals (struct target_ops *self, |
1700 | int numsigs, unsigned char *pass_signals) | |
89be2091 DJ |
1701 | { |
1702 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1703 | { | |
1704 | char *pass_packet, *p; | |
89be2091 | 1705 | int count = 0, i; |
747dc59d | 1706 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1707 | |
1708 | gdb_assert (numsigs < 256); | |
1709 | for (i = 0; i < numsigs; i++) | |
1710 | { | |
2455069d | 1711 | if (pass_signals[i]) |
89be2091 DJ |
1712 | count++; |
1713 | } | |
1714 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1715 | strcpy (pass_packet, "QPassSignals:"); | |
1716 | p = pass_packet + strlen (pass_packet); | |
1717 | for (i = 0; i < numsigs; i++) | |
1718 | { | |
2455069d | 1719 | if (pass_signals[i]) |
89be2091 DJ |
1720 | { |
1721 | if (i >= 16) | |
1722 | *p++ = tohex (i >> 4); | |
1723 | *p++ = tohex (i & 15); | |
1724 | if (count) | |
1725 | *p++ = ';'; | |
1726 | else | |
1727 | break; | |
1728 | count--; | |
1729 | } | |
1730 | } | |
1731 | *p = 0; | |
747dc59d | 1732 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1733 | { |
89be2091 DJ |
1734 | putpkt (pass_packet); |
1735 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1736 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1737 | if (rs->last_pass_packet) |
1738 | xfree (rs->last_pass_packet); | |
1739 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1740 | } |
1741 | else | |
1742 | xfree (pass_packet); | |
1743 | } | |
1744 | } | |
1745 | ||
9b224c5e PA |
1746 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1747 | signals it should pass through to the inferior when detaching. */ | |
1748 | ||
1749 | static void | |
daf5e9b6 TT |
1750 | remote_program_signals (struct target_ops *self, |
1751 | int numsigs, unsigned char *signals) | |
9b224c5e PA |
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 | |
a14ed312 | 1940 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1941 | |
a14ed312 | 1942 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1943 | |
a14ed312 | 1944 | static char *pack_int (char *buf, int value); |
cce74817 | 1945 | |
a14ed312 | 1946 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1947 | |
a14ed312 | 1948 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1949 | |
23860348 | 1950 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1951 | |
23860348 | 1952 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1953 | |
23860348 | 1954 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1955 | |
23860348 | 1956 | static int threadref_to_int (threadref *ref); |
cce74817 | 1957 | |
23860348 | 1958 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1959 | |
23860348 | 1960 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1961 | |
2bc416ba | 1962 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1963 | threadref *id); |
cce74817 | 1964 | |
a14ed312 | 1965 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1966 | threadref *expectedref, |
a14ed312 KB |
1967 | struct gdb_ext_thread_info |
1968 | *info); | |
cce74817 JM |
1969 | |
1970 | ||
2bc416ba | 1971 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1972 | int fieldset, /*TAG mask */ |
a14ed312 | 1973 | struct gdb_ext_thread_info *info); |
cce74817 | 1974 | |
a14ed312 KB |
1975 | static char *pack_threadlist_request (char *pkt, int startflag, |
1976 | int threadcount, | |
23860348 | 1977 | threadref *nextthread); |
cce74817 | 1978 | |
a14ed312 KB |
1979 | static int parse_threadlist_response (char *pkt, |
1980 | int result_limit, | |
23860348 | 1981 | threadref *original_echo, |
2bc416ba | 1982 | threadref *resultlist, |
23860348 | 1983 | int *doneflag); |
cce74817 | 1984 | |
a14ed312 | 1985 | static int remote_get_threadlist (int startflag, |
23860348 | 1986 | threadref *nextthread, |
a14ed312 KB |
1987 | int result_limit, |
1988 | int *done, | |
2bc416ba | 1989 | int *result_count, |
23860348 | 1990 | threadref *threadlist); |
cce74817 | 1991 | |
23860348 | 1992 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1993 | |
a14ed312 KB |
1994 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1995 | void *context, int looplimit); | |
cce74817 | 1996 | |
23860348 | 1997 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1998 | |
82f73884 PA |
1999 | |
2000 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2001 | buffer we're allowed to write to. Returns | |
2002 | BUF+CHARACTERS_WRITTEN. */ | |
2003 | ||
2004 | static char * | |
2005 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2006 | { | |
2007 | int pid, tid; | |
2008 | struct remote_state *rs = get_remote_state (); | |
2009 | ||
2010 | if (remote_multi_process_p (rs)) | |
2011 | { | |
2012 | pid = ptid_get_pid (ptid); | |
2013 | if (pid < 0) | |
2014 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2015 | else | |
2016 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2017 | } | |
2018 | tid = ptid_get_tid (ptid); | |
2019 | if (tid < 0) | |
2020 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2021 | else | |
2022 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2023 | ||
2024 | return buf; | |
2025 | } | |
2026 | ||
2027 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2028 | passed the last parsed char. Returns null_ptid on error. */ | |
2029 | ||
2030 | static ptid_t | |
2031 | read_ptid (char *buf, char **obuf) | |
2032 | { | |
2033 | char *p = buf; | |
2034 | char *pp; | |
2035 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2036 | |
2037 | if (*p == 'p') | |
2038 | { | |
2039 | /* Multi-process ptid. */ | |
2040 | pp = unpack_varlen_hex (p + 1, &pid); | |
2041 | if (*pp != '.') | |
b37520b6 | 2042 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2043 | |
2044 | p = pp; | |
2045 | pp = unpack_varlen_hex (p + 1, &tid); | |
2046 | if (obuf) | |
2047 | *obuf = pp; | |
2048 | return ptid_build (pid, 0, tid); | |
2049 | } | |
2050 | ||
2051 | /* No multi-process. Just a tid. */ | |
2052 | pp = unpack_varlen_hex (p, &tid); | |
2053 | ||
2054 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2055 | what's in inferior_ptid, unless it's null at this point. If so, |
2056 | then since there's no way to know the pid of the reported | |
2057 | threads, use the magic number. */ | |
2058 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2059 | pid = ptid_get_pid (magic_null_ptid); | |
2060 | else | |
2061 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2062 | |
2063 | if (obuf) | |
2064 | *obuf = pp; | |
2065 | return ptid_build (pid, 0, tid); | |
2066 | } | |
2067 | ||
c906108c | 2068 | static int |
fba45db2 | 2069 | stubhex (int ch) |
c906108c SS |
2070 | { |
2071 | if (ch >= 'a' && ch <= 'f') | |
2072 | return ch - 'a' + 10; | |
2073 | if (ch >= '0' && ch <= '9') | |
2074 | return ch - '0'; | |
2075 | if (ch >= 'A' && ch <= 'F') | |
2076 | return ch - 'A' + 10; | |
2077 | return -1; | |
2078 | } | |
2079 | ||
2080 | static int | |
fba45db2 | 2081 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2082 | { |
2083 | int nibble; | |
2084 | int retval = 0; | |
2085 | ||
2086 | while (fieldlength) | |
2087 | { | |
2088 | nibble = stubhex (*buff++); | |
2089 | retval |= nibble; | |
2090 | fieldlength--; | |
2091 | if (fieldlength) | |
2092 | retval = retval << 4; | |
2093 | } | |
2094 | return retval; | |
2095 | } | |
2096 | ||
c906108c | 2097 | static char * |
fba45db2 | 2098 | unpack_nibble (char *buf, int *val) |
c906108c | 2099 | { |
b7589f7d | 2100 | *val = fromhex (*buf++); |
c906108c SS |
2101 | return buf; |
2102 | } | |
2103 | ||
c906108c | 2104 | static char * |
fba45db2 | 2105 | unpack_byte (char *buf, int *value) |
c906108c SS |
2106 | { |
2107 | *value = stub_unpack_int (buf, 2); | |
2108 | return buf + 2; | |
2109 | } | |
2110 | ||
2111 | static char * | |
fba45db2 | 2112 | pack_int (char *buf, int value) |
c906108c SS |
2113 | { |
2114 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2115 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2116 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2117 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2118 | return buf; | |
2119 | } | |
2120 | ||
2121 | static char * | |
fba45db2 | 2122 | unpack_int (char *buf, int *value) |
c906108c SS |
2123 | { |
2124 | *value = stub_unpack_int (buf, 8); | |
2125 | return buf + 8; | |
2126 | } | |
2127 | ||
23860348 | 2128 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2129 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2130 | |
2131 | static char * | |
fba45db2 | 2132 | pack_string (char *pkt, char *string) |
c906108c SS |
2133 | { |
2134 | char ch; | |
2135 | int len; | |
2136 | ||
2137 | len = strlen (string); | |
2138 | if (len > 200) | |
23860348 | 2139 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2140 | pkt = pack_hex_byte (pkt, len); |
2141 | while (len-- > 0) | |
2142 | { | |
2143 | ch = *string++; | |
2144 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2145 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2146 | *pkt++ = ch; |
2147 | } | |
2148 | return pkt; | |
2149 | } | |
2150 | #endif /* 0 (unused) */ | |
2151 | ||
2152 | static char * | |
fba45db2 | 2153 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2154 | { |
2155 | while (length--) | |
2156 | *dest++ = *src++; | |
2157 | *dest = '\0'; | |
2158 | return src; | |
2159 | } | |
2160 | ||
2161 | static char * | |
fba45db2 | 2162 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2163 | { |
2164 | char *limit; | |
2165 | unsigned char *altid; | |
2166 | ||
2167 | altid = (unsigned char *) id; | |
2168 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2169 | while (pkt < limit) | |
2170 | pkt = pack_hex_byte (pkt, *altid++); | |
2171 | return pkt; | |
2172 | } | |
2173 | ||
2174 | ||
2175 | static char * | |
fba45db2 | 2176 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2177 | { |
2178 | char *altref; | |
2179 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2180 | int x, y; | |
2181 | ||
2182 | altref = (char *) id; | |
2183 | ||
2184 | while (inbuf < limit) | |
2185 | { | |
2186 | x = stubhex (*inbuf++); | |
2187 | y = stubhex (*inbuf++); | |
2188 | *altref++ = (x << 4) | y; | |
2189 | } | |
2190 | return inbuf; | |
2191 | } | |
2192 | ||
2193 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2194 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2195 | to use 64bit thread references internally. This is an adapter |
2196 | function. */ | |
2197 | ||
2198 | void | |
fba45db2 | 2199 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2200 | { |
2201 | unsigned char *scan; | |
2202 | ||
2203 | scan = (unsigned char *) id; | |
2204 | { | |
2205 | int i = 4; | |
2206 | while (i--) | |
2207 | *scan++ = 0; | |
2208 | } | |
2209 | *scan++ = (value >> 24) & 0xff; | |
2210 | *scan++ = (value >> 16) & 0xff; | |
2211 | *scan++ = (value >> 8) & 0xff; | |
2212 | *scan++ = (value & 0xff); | |
2213 | } | |
2214 | ||
2215 | static int | |
fba45db2 | 2216 | threadref_to_int (threadref *ref) |
c906108c SS |
2217 | { |
2218 | int i, value = 0; | |
2219 | unsigned char *scan; | |
2220 | ||
cfd77fa1 | 2221 | scan = *ref; |
c906108c SS |
2222 | scan += 4; |
2223 | i = 4; | |
2224 | while (i-- > 0) | |
2225 | value = (value << 8) | ((*scan++) & 0xff); | |
2226 | return value; | |
2227 | } | |
2228 | ||
2229 | static void | |
fba45db2 | 2230 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2231 | { |
2232 | int i; | |
2233 | unsigned char *csrc, *cdest; | |
2234 | ||
2235 | csrc = (unsigned char *) src; | |
2236 | cdest = (unsigned char *) dest; | |
2237 | i = 8; | |
2238 | while (i--) | |
2239 | *cdest++ = *csrc++; | |
2240 | } | |
2241 | ||
2242 | static int | |
fba45db2 | 2243 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2244 | { |
23860348 | 2245 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2246 | #if 0 |
2247 | unsigned char *srcp, *destp; | |
2248 | int i, result; | |
2249 | srcp = (char *) src; | |
2250 | destp = (char *) dest; | |
2251 | ||
2252 | result = 1; | |
2253 | while (i-- > 0) | |
2254 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2255 | return result; | |
2256 | #endif | |
2257 | return 1; | |
2258 | } | |
2259 | ||
2260 | /* | |
c5aa993b JM |
2261 | threadid:1, # always request threadid |
2262 | context_exists:2, | |
2263 | display:4, | |
2264 | unique_name:8, | |
2265 | more_display:16 | |
2266 | */ | |
c906108c SS |
2267 | |
2268 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2269 | ||
2270 | static char * | |
fba45db2 | 2271 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2272 | { |
23860348 MS |
2273 | *pkt++ = 'q'; /* Info Query */ |
2274 | *pkt++ = 'P'; /* process or thread info */ | |
2275 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2276 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2277 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2278 | return pkt; |
2279 | } | |
2280 | ||
23860348 | 2281 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2282 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2283 | add more fields as time goes by. */ |
c906108c | 2284 | |
23860348 | 2285 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2286 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2287 | fetch registers and its stack? */ |
c5aa993b | 2288 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2289 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2290 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2291 | the process. */ |
c906108c SS |
2292 | |
2293 | static int | |
fba45db2 KB |
2294 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2295 | struct gdb_ext_thread_info *info) | |
c906108c | 2296 | { |
d01949b6 | 2297 | struct remote_state *rs = get_remote_state (); |
c906108c | 2298 | int mask, length; |
cfd77fa1 | 2299 | int tag; |
c906108c | 2300 | threadref ref; |
6d820c5c | 2301 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2302 | int retval = 1; |
2303 | ||
23860348 | 2304 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2305 | info->active = 0; |
2306 | info->display[0] = '\0'; | |
2307 | info->shortname[0] = '\0'; | |
2308 | info->more_display[0] = '\0'; | |
2309 | ||
23860348 MS |
2310 | /* Assume the characters indicating the packet type have been |
2311 | stripped. */ | |
c906108c SS |
2312 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2313 | pkt = unpack_threadid (pkt, &ref); | |
2314 | ||
2315 | if (mask == 0) | |
8a3fe4f8 | 2316 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2317 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2318 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2319 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2320 | return 0; |
2321 | } | |
2322 | copy_threadref (&info->threadid, &ref); | |
2323 | ||
23860348 | 2324 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2325 | |
23860348 MS |
2326 | /* Packets are terminated with nulls. */ |
2327 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2328 | { |
2329 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2330 | pkt = unpack_byte (pkt, &length); /* length */ |
2331 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2332 | { |
8a3fe4f8 | 2333 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2334 | retval = 0; |
2335 | break; | |
2336 | } | |
2337 | if (tag == TAG_THREADID) | |
2338 | { | |
2339 | if (length != 16) | |
2340 | { | |
8a3fe4f8 | 2341 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2342 | retval = 0; |
2343 | break; | |
2344 | } | |
2345 | pkt = unpack_threadid (pkt, &ref); | |
2346 | mask = mask & ~TAG_THREADID; | |
2347 | continue; | |
2348 | } | |
2349 | if (tag == TAG_EXISTS) | |
2350 | { | |
2351 | info->active = stub_unpack_int (pkt, length); | |
2352 | pkt += length; | |
2353 | mask = mask & ~(TAG_EXISTS); | |
2354 | if (length > 8) | |
2355 | { | |
8a3fe4f8 | 2356 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2357 | retval = 0; |
2358 | break; | |
2359 | } | |
2360 | continue; | |
2361 | } | |
2362 | if (tag == TAG_THREADNAME) | |
2363 | { | |
2364 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2365 | mask = mask & ~TAG_THREADNAME; | |
2366 | continue; | |
2367 | } | |
2368 | if (tag == TAG_DISPLAY) | |
2369 | { | |
2370 | pkt = unpack_string (pkt, &info->display[0], length); | |
2371 | mask = mask & ~TAG_DISPLAY; | |
2372 | continue; | |
2373 | } | |
2374 | if (tag == TAG_MOREDISPLAY) | |
2375 | { | |
2376 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2377 | mask = mask & ~TAG_MOREDISPLAY; | |
2378 | continue; | |
2379 | } | |
8a3fe4f8 | 2380 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2381 | break; /* Not a tag we know about. */ |
c906108c SS |
2382 | } |
2383 | return retval; | |
2384 | } | |
2385 | ||
2386 | static int | |
fba45db2 KB |
2387 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2388 | struct gdb_ext_thread_info *info) | |
c906108c | 2389 | { |
d01949b6 | 2390 | struct remote_state *rs = get_remote_state (); |
c906108c | 2391 | int result; |
c906108c | 2392 | |
2e9f7625 DJ |
2393 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2394 | putpkt (rs->buf); | |
6d820c5c | 2395 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2396 | |
2397 | if (rs->buf[0] == '\0') | |
2398 | return 0; | |
2399 | ||
2e9f7625 | 2400 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2401 | threadid, info); |
c906108c SS |
2402 | return result; |
2403 | } | |
2404 | ||
c906108c SS |
2405 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2406 | ||
2407 | static char * | |
fba45db2 KB |
2408 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2409 | threadref *nextthread) | |
c906108c SS |
2410 | { |
2411 | *pkt++ = 'q'; /* info query packet */ | |
2412 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2413 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2414 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2415 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2416 | *pkt = '\0'; | |
2417 | return pkt; | |
2418 | } | |
2419 | ||
2420 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2421 | ||
2422 | static int | |
fba45db2 KB |
2423 | parse_threadlist_response (char *pkt, int result_limit, |
2424 | threadref *original_echo, threadref *resultlist, | |
2425 | int *doneflag) | |
c906108c | 2426 | { |
d01949b6 | 2427 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2428 | char *limit; |
2429 | int count, resultcount, done; | |
2430 | ||
2431 | resultcount = 0; | |
2432 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2433 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2434 | /* done parse past here */ |
c906108c SS |
2435 | pkt = unpack_byte (pkt, &count); /* count field */ |
2436 | pkt = unpack_nibble (pkt, &done); | |
2437 | /* The first threadid is the argument threadid. */ | |
2438 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2439 | while ((count-- > 0) && (pkt < limit)) | |
2440 | { | |
2441 | pkt = unpack_threadid (pkt, resultlist++); | |
2442 | if (resultcount++ >= result_limit) | |
2443 | break; | |
2444 | } | |
2445 | if (doneflag) | |
2446 | *doneflag = done; | |
2447 | return resultcount; | |
2448 | } | |
2449 | ||
2450 | static int | |
fba45db2 KB |
2451 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2452 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2453 | { |
d01949b6 | 2454 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2455 | int result = 1; |
2456 | ||
23860348 | 2457 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2458 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2459 | >= get_remote_packet_size ()) | |
ea9c271d | 2460 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2461 | |
6d820c5c DJ |
2462 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2463 | putpkt (rs->buf); | |
2464 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2465 | |
d8f2712d | 2466 | if (*rs->buf == '\0') |
21bce120 | 2467 | return 0; |
d8f2712d VP |
2468 | else |
2469 | *result_count = | |
0d031856 TT |
2470 | parse_threadlist_response (rs->buf + 2, result_limit, |
2471 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2472 | |
0d031856 | 2473 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2474 | { |
23860348 MS |
2475 | /* FIXME: This is a good reason to drop the packet. */ |
2476 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2477 | /* Possabilities : |
2478 | retransmit immediatly - race conditions | |
2479 | retransmit after timeout - yes | |
2480 | exit | |
2481 | wait for packet, then exit | |
2482 | */ | |
8a3fe4f8 | 2483 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2484 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2485 | } |
2486 | if (*result_count <= 0) | |
2487 | { | |
2488 | if (*done != 1) | |
2489 | { | |
8a3fe4f8 | 2490 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2491 | result = 0; |
2492 | } | |
2493 | return result; /* break; */ | |
2494 | } | |
2495 | if (*result_count > result_limit) | |
2496 | { | |
2497 | *result_count = 0; | |
8a3fe4f8 | 2498 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2499 | return 0; |
2500 | } | |
2501 | return result; | |
2502 | } | |
2503 | ||
23860348 MS |
2504 | /* This is the interface between remote and threads, remotes upper |
2505 | interface. */ | |
c906108c SS |
2506 | |
2507 | /* remote_find_new_threads retrieves the thread list and for each | |
2508 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2509 | adding the thread if it does not already exist. This involves |
c906108c SS |
2510 | getting partial thread lists from the remote target so, polling the |
2511 | quit_flag is required. */ | |
2512 | ||
2513 | ||
c906108c | 2514 | static int |
fba45db2 KB |
2515 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2516 | int looplimit) | |
c906108c | 2517 | { |
0d031856 | 2518 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2519 | int done, i, result_count; |
2520 | int startflag = 1; | |
2521 | int result = 1; | |
2522 | int loopcount = 0; | |
c906108c SS |
2523 | |
2524 | done = 0; | |
2525 | while (!done) | |
2526 | { | |
2527 | if (loopcount++ > looplimit) | |
2528 | { | |
2529 | result = 0; | |
8a3fe4f8 | 2530 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2531 | break; |
2532 | } | |
0d031856 TT |
2533 | if (!remote_get_threadlist (startflag, &rs->nextthread, |
2534 | MAXTHREADLISTRESULTS, | |
2535 | &done, &result_count, rs->resultthreadlist)) | |
c906108c SS |
2536 | { |
2537 | result = 0; | |
2538 | break; | |
2539 | } | |
23860348 | 2540 | /* Clear for later iterations. */ |
c906108c SS |
2541 | startflag = 0; |
2542 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2543 | if (result_count >= 1) | |
0d031856 TT |
2544 | copy_threadref (&rs->nextthread, |
2545 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2546 | i = 0; |
2547 | while (result_count--) | |
0d031856 | 2548 | if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context))) |
c906108c SS |
2549 | break; |
2550 | } | |
2551 | return result; | |
2552 | } | |
2553 | ||
2554 | static int | |
fba45db2 | 2555 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2556 | { |
79d7f229 PA |
2557 | int pid = ptid_get_pid (inferior_ptid); |
2558 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2559 | |
2560 | if (!in_thread_list (ptid)) | |
2561 | add_thread (ptid); | |
c906108c SS |
2562 | return 1; /* continue iterator */ |
2563 | } | |
2564 | ||
2565 | #define CRAZY_MAX_THREADS 1000 | |
2566 | ||
39f77062 KB |
2567 | static ptid_t |
2568 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2569 | { |
d01949b6 | 2570 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2571 | |
2572 | putpkt ("qC"); | |
6d820c5c | 2573 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2574 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2575 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2576 | else |
2577 | return oldpid; | |
2578 | } | |
2579 | ||
802188a7 RM |
2580 | /* Find new threads for info threads command. |
2581 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2582 | */ |
cce74817 JM |
2583 | |
2584 | static void | |
fba45db2 | 2585 | remote_find_new_threads (void) |
c906108c | 2586 | { |
c5aa993b JM |
2587 | remote_threadlist_iterator (remote_newthread_step, 0, |
2588 | CRAZY_MAX_THREADS); | |
c906108c SS |
2589 | } |
2590 | ||
dc146f7c VP |
2591 | #if defined(HAVE_LIBEXPAT) |
2592 | ||
2593 | typedef struct thread_item | |
2594 | { | |
2595 | ptid_t ptid; | |
2596 | char *extra; | |
2597 | int core; | |
2598 | } thread_item_t; | |
2599 | DEF_VEC_O(thread_item_t); | |
2600 | ||
2601 | struct threads_parsing_context | |
2602 | { | |
2603 | VEC (thread_item_t) *items; | |
2604 | }; | |
2605 | ||
2606 | static void | |
2607 | start_thread (struct gdb_xml_parser *parser, | |
2608 | const struct gdb_xml_element *element, | |
2609 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2610 | { | |
2611 | struct threads_parsing_context *data = user_data; | |
2612 | ||
2613 | struct thread_item item; | |
2614 | char *id; | |
3d2c1d41 | 2615 | struct gdb_xml_value *attr; |
dc146f7c | 2616 | |
3d2c1d41 | 2617 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2618 | item.ptid = read_ptid (id, NULL); |
2619 | ||
3d2c1d41 PA |
2620 | attr = xml_find_attribute (attributes, "core"); |
2621 | if (attr != NULL) | |
2622 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2623 | else |
2624 | item.core = -1; | |
2625 | ||
2626 | item.extra = 0; | |
2627 | ||
2628 | VEC_safe_push (thread_item_t, data->items, &item); | |
2629 | } | |
2630 | ||
2631 | static void | |
2632 | end_thread (struct gdb_xml_parser *parser, | |
2633 | const struct gdb_xml_element *element, | |
2634 | void *user_data, const char *body_text) | |
2635 | { | |
2636 | struct threads_parsing_context *data = user_data; | |
2637 | ||
2638 | if (body_text && *body_text) | |
2ae2a0b7 | 2639 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2640 | } |
2641 | ||
2642 | const struct gdb_xml_attribute thread_attributes[] = { | |
2643 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2644 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2645 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2646 | }; | |
2647 | ||
2648 | const struct gdb_xml_element thread_children[] = { | |
2649 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2650 | }; | |
2651 | ||
2652 | const struct gdb_xml_element threads_children[] = { | |
2653 | { "thread", thread_attributes, thread_children, | |
2654 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2655 | start_thread, end_thread }, | |
2656 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2657 | }; | |
2658 | ||
2659 | const struct gdb_xml_element threads_elements[] = { | |
2660 | { "threads", NULL, threads_children, | |
2661 | GDB_XML_EF_NONE, NULL, NULL }, | |
2662 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2663 | }; | |
2664 | ||
02357a4a PA |
2665 | /* Discard the contents of the constructed thread info context. */ |
2666 | ||
2667 | static void | |
2668 | clear_threads_parsing_context (void *p) | |
2669 | { | |
2670 | struct threads_parsing_context *context = p; | |
2671 | int i; | |
2672 | struct thread_item *item; | |
2673 | ||
2674 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2675 | xfree (item->extra); | |
2676 | ||
2677 | VEC_free (thread_item_t, context->items); | |
2678 | } | |
2679 | ||
dc146f7c VP |
2680 | #endif |
2681 | ||
9d1f7ab2 MS |
2682 | /* |
2683 | * Find all threads for info threads command. | |
2684 | * Uses new thread protocol contributed by Cisco. | |
2685 | * Falls back and attempts to use the older method (above) | |
2686 | * if the target doesn't respond to the new method. | |
2687 | */ | |
2688 | ||
0f71a2f6 | 2689 | static void |
28439f5e | 2690 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2691 | { |
d01949b6 | 2692 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2693 | char *bufp; |
79d7f229 | 2694 | ptid_t new_thread; |
0f71a2f6 | 2695 | |
5d93a237 | 2696 | if (rs->remote_desc == 0) /* paranoia */ |
8a3fe4f8 | 2697 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2698 | |
dc146f7c VP |
2699 | #if defined(HAVE_LIBEXPAT) |
2700 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2701 | { | |
2702 | char *xml = target_read_stralloc (¤t_target, | |
2703 | TARGET_OBJECT_THREADS, NULL); | |
2704 | ||
2705 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2706 | |
dc146f7c VP |
2707 | if (xml && *xml) |
2708 | { | |
dc146f7c | 2709 | struct threads_parsing_context context; |
dc146f7c | 2710 | |
efc0eabd PA |
2711 | context.items = NULL; |
2712 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2713 | |
efc0eabd PA |
2714 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2715 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2716 | { |
2717 | int i; | |
2718 | struct thread_item *item; | |
2719 | ||
3e43a32a MS |
2720 | for (i = 0; |
2721 | VEC_iterate (thread_item_t, context.items, i, item); | |
2722 | ++i) | |
dc146f7c VP |
2723 | { |
2724 | if (!ptid_equal (item->ptid, null_ptid)) | |
2725 | { | |
2726 | struct private_thread_info *info; | |
2727 | /* In non-stop mode, we assume new found threads | |
2728 | are running until proven otherwise with a | |
2729 | stop reply. In all-stop, we can only get | |
2730 | here if all threads are stopped. */ | |
2731 | int running = non_stop ? 1 : 0; | |
2732 | ||
2733 | remote_notice_new_inferior (item->ptid, running); | |
2734 | ||
2735 | info = demand_private_info (item->ptid); | |
2736 | info->core = item->core; | |
2737 | info->extra = item->extra; | |
02357a4a | 2738 | item->extra = NULL; |
dc146f7c | 2739 | } |
dc146f7c VP |
2740 | } |
2741 | } | |
dc146f7c VP |
2742 | } |
2743 | ||
2744 | do_cleanups (back_to); | |
2745 | return; | |
2746 | } | |
2747 | #endif | |
2748 | ||
b80fafe3 | 2749 | if (rs->use_threadinfo_query) |
9d1f7ab2 MS |
2750 | { |
2751 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2752 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2753 | bufp = rs->buf; |
9d1f7ab2 | 2754 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2755 | { |
44d594fd PA |
2756 | struct cleanup *old_chain; |
2757 | char *saved_reply; | |
2758 | ||
2759 | /* remote_notice_new_inferior (in the loop below) may make | |
2760 | new RSP calls, which clobber rs->buf. Work with a | |
2761 | copy. */ | |
2762 | bufp = saved_reply = xstrdup (rs->buf); | |
2763 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2764 | ||
9d1f7ab2 MS |
2765 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2766 | { | |
2767 | do | |
2768 | { | |
82f73884 | 2769 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2770 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2771 | { |
74531fed | 2772 | /* In non-stop mode, we assume new found threads |
1941c569 | 2773 | are running until proven otherwise with a |
74531fed PA |
2774 | stop reply. In all-stop, we can only get |
2775 | here if all threads are stopped. */ | |
1941c569 PA |
2776 | int running = non_stop ? 1 : 0; |
2777 | ||
2778 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2779 | } |
9d1f7ab2 MS |
2780 | } |
2781 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2782 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2783 | putpkt ("qsThreadInfo"); |
6d820c5c | 2784 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2785 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2786 | } |
44d594fd | 2787 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2788 | return; /* done */ |
2789 | } | |
2790 | } | |
2791 | ||
74531fed PA |
2792 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2793 | if (non_stop) | |
2794 | return; | |
2795 | ||
23860348 | 2796 | /* Else fall back to old method based on jmetzler protocol. */ |
b80fafe3 | 2797 | rs->use_threadinfo_query = 0; |
9d1f7ab2 MS |
2798 | remote_find_new_threads (); |
2799 | return; | |
2800 | } | |
2801 | ||
802188a7 | 2802 | /* |
9d1f7ab2 MS |
2803 | * Collect a descriptive string about the given thread. |
2804 | * The target may say anything it wants to about the thread | |
2805 | * (typically info about its blocked / runnable state, name, etc.). | |
2806 | * This string will appear in the info threads display. | |
802188a7 | 2807 | * |
9d1f7ab2 MS |
2808 | * Optional: targets are not required to implement this function. |
2809 | */ | |
2810 | ||
2811 | static char * | |
c15906d8 | 2812 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 2813 | { |
d01949b6 | 2814 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2815 | int result; |
2816 | int set; | |
2817 | threadref id; | |
2818 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2819 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2820 | int n = 0; /* position in display_buf */ |
2821 | ||
5d93a237 | 2822 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2823 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2824 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2825 | |
60e569b9 PA |
2826 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2827 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2828 | /* This is the main thread which was added by GDB. The remote | |
2829 | server doesn't know about it. */ | |
2830 | return NULL; | |
2831 | ||
dc146f7c VP |
2832 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2833 | { | |
2834 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2835 | |
dc146f7c VP |
2836 | if (info && info->private) |
2837 | return info->private->extra; | |
2838 | else | |
2839 | return NULL; | |
2840 | } | |
2841 | ||
b80fafe3 | 2842 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2843 | { |
82f73884 PA |
2844 | char *b = rs->buf; |
2845 | char *endb = rs->buf + get_remote_packet_size (); | |
2846 | ||
2847 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2848 | b += strlen (b); | |
2849 | write_ptid (b, endb, tp->ptid); | |
2850 | ||
2e9f7625 | 2851 | putpkt (rs->buf); |
6d820c5c | 2852 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2853 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2854 | { |
2e9f7625 DJ |
2855 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2856 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2857 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2858 | return display_buf; |
2859 | } | |
0f71a2f6 | 2860 | } |
9d1f7ab2 MS |
2861 | |
2862 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2863 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2864 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2865 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2866 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2867 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2868 | if (threadinfo.active) | |
0f71a2f6 | 2869 | { |
9d1f7ab2 | 2870 | if (*threadinfo.shortname) |
2bc416ba | 2871 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2872 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2873 | if (*threadinfo.display) |
2bc416ba | 2874 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2875 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2876 | if (*threadinfo.more_display) |
2bc416ba | 2877 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2878 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2879 | |
2880 | if (n > 0) | |
c5aa993b | 2881 | { |
23860348 | 2882 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2883 | if (',' == display_buf[n-1]) |
2884 | display_buf[n-1] = ' '; | |
2885 | return display_buf; | |
c5aa993b | 2886 | } |
0f71a2f6 | 2887 | } |
9d1f7ab2 | 2888 | return NULL; |
0f71a2f6 | 2889 | } |
c906108c | 2890 | \f |
c5aa993b | 2891 | |
0fb4aa4b PA |
2892 | static int |
2893 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2894 | struct static_tracepoint_marker *marker) | |
2895 | { | |
2896 | struct remote_state *rs = get_remote_state (); | |
2897 | char *p = rs->buf; | |
2898 | ||
bba74b36 | 2899 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2900 | p += strlen (p); |
2901 | p += hexnumstr (p, addr); | |
2902 | putpkt (rs->buf); | |
2903 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2904 | p = rs->buf; | |
2905 | ||
2906 | if (*p == 'E') | |
2907 | error (_("Remote failure reply: %s"), p); | |
2908 | ||
2909 | if (*p++ == 'm') | |
2910 | { | |
2911 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2912 | return 1; | |
2913 | } | |
2914 | ||
2915 | return 0; | |
2916 | } | |
2917 | ||
0fb4aa4b PA |
2918 | static VEC(static_tracepoint_marker_p) * |
2919 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2920 | { | |
2921 | struct remote_state *rs = get_remote_state (); | |
2922 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2923 | struct static_tracepoint_marker *marker = NULL; | |
2924 | struct cleanup *old_chain; | |
2925 | char *p; | |
2926 | ||
2927 | /* Ask for a first packet of static tracepoint marker | |
2928 | definition. */ | |
2929 | putpkt ("qTfSTM"); | |
2930 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2931 | p = rs->buf; | |
2932 | if (*p == 'E') | |
2933 | error (_("Remote failure reply: %s"), p); | |
2934 | ||
2935 | old_chain = make_cleanup (free_current_marker, &marker); | |
2936 | ||
2937 | while (*p++ == 'm') | |
2938 | { | |
2939 | if (marker == NULL) | |
2940 | marker = XCNEW (struct static_tracepoint_marker); | |
2941 | ||
2942 | do | |
2943 | { | |
2944 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2945 | ||
2946 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2947 | { | |
2948 | VEC_safe_push (static_tracepoint_marker_p, | |
2949 | markers, marker); | |
2950 | marker = NULL; | |
2951 | } | |
2952 | else | |
2953 | { | |
2954 | release_static_tracepoint_marker (marker); | |
2955 | memset (marker, 0, sizeof (*marker)); | |
2956 | } | |
2957 | } | |
2958 | while (*p++ == ','); /* comma-separated list */ | |
2959 | /* Ask for another packet of static tracepoint definition. */ | |
2960 | putpkt ("qTsSTM"); | |
2961 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2962 | p = rs->buf; | |
2963 | } | |
2964 | ||
2965 | do_cleanups (old_chain); | |
2966 | return markers; | |
2967 | } | |
2968 | ||
2969 | \f | |
10760264 JB |
2970 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2971 | ||
2972 | static ptid_t | |
1e6b91a4 | 2973 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 JB |
2974 | { |
2975 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2976 | } | |
2977 | \f | |
2978 | ||
24b06219 | 2979 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2980 | |
2981 | static void | |
fba45db2 | 2982 | extended_remote_restart (void) |
c906108c | 2983 | { |
d01949b6 | 2984 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2985 | |
2986 | /* Send the restart command; for reasons I don't understand the | |
2987 | remote side really expects a number after the "R". */ | |
ea9c271d | 2988 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2989 | putpkt (rs->buf); |
c906108c | 2990 | |
ad9a8f3f | 2991 | remote_fileio_reset (); |
c906108c SS |
2992 | } |
2993 | \f | |
2994 | /* Clean up connection to a remote debugger. */ | |
2995 | ||
c906108c | 2996 | static void |
de90e03d | 2997 | remote_close (struct target_ops *self) |
c906108c | 2998 | { |
5d93a237 TT |
2999 | struct remote_state *rs = get_remote_state (); |
3000 | ||
3001 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3002 | return; /* already closed */ |
3003 | ||
3004 | /* Make sure we leave stdin registered in the event loop, and we | |
3005 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3006 | remote_terminal_ours (self); |
ce5ce7ed | 3007 | |
5d93a237 TT |
3008 | serial_close (rs->remote_desc); |
3009 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3010 | |
3011 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3012 | of all the inferiors and their threads we were controlling. |
3013 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3014 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3015 | inferior_ptid = null_ptid; |
f67fd822 | 3016 | discard_all_inferiors (); |
ce5ce7ed | 3017 | |
f48ff2a7 YQ |
3018 | /* We are closing the remote target, so we should discard |
3019 | everything of this target. */ | |
bcc75809 | 3020 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3021 | |
3022 | if (remote_async_inferior_event_token) | |
3023 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3024 | |
5965e028 | 3025 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3026 | |
3027 | trace_reset_local_state (); | |
c906108c SS |
3028 | } |
3029 | ||
23860348 | 3030 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3031 | |
3032 | static void | |
fba45db2 | 3033 | get_offsets (void) |
c906108c | 3034 | { |
d01949b6 | 3035 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3036 | char *buf; |
085dd6e6 | 3037 | char *ptr; |
31d99776 DJ |
3038 | int lose, num_segments = 0, do_sections, do_segments; |
3039 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3040 | struct section_offsets *offs; |
31d99776 DJ |
3041 | struct symfile_segment_data *data; |
3042 | ||
3043 | if (symfile_objfile == NULL) | |
3044 | return; | |
c906108c SS |
3045 | |
3046 | putpkt ("qOffsets"); | |
6d820c5c | 3047 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3048 | buf = rs->buf; |
c906108c SS |
3049 | |
3050 | if (buf[0] == '\000') | |
3051 | return; /* Return silently. Stub doesn't support | |
23860348 | 3052 | this command. */ |
c906108c SS |
3053 | if (buf[0] == 'E') |
3054 | { | |
8a3fe4f8 | 3055 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3056 | return; |
3057 | } | |
3058 | ||
3059 | /* Pick up each field in turn. This used to be done with scanf, but | |
3060 | scanf will make trouble if CORE_ADDR size doesn't match | |
3061 | conversion directives correctly. The following code will work | |
3062 | with any size of CORE_ADDR. */ | |
3063 | text_addr = data_addr = bss_addr = 0; | |
3064 | ptr = buf; | |
3065 | lose = 0; | |
3066 | ||
3067 | if (strncmp (ptr, "Text=", 5) == 0) | |
3068 | { | |
3069 | ptr += 5; | |
3070 | /* Don't use strtol, could lose on big values. */ | |
3071 | while (*ptr && *ptr != ';') | |
3072 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3073 | |
31d99776 DJ |
3074 | if (strncmp (ptr, ";Data=", 6) == 0) |
3075 | { | |
3076 | ptr += 6; | |
3077 | while (*ptr && *ptr != ';') | |
3078 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3079 | } | |
3080 | else | |
3081 | lose = 1; | |
3082 | ||
3083 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3084 | { | |
3085 | ptr += 5; | |
3086 | while (*ptr && *ptr != ';') | |
3087 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3088 | |
31d99776 DJ |
3089 | if (bss_addr != data_addr) |
3090 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3091 | } | |
3092 | else | |
3093 | lose = 1; | |
3094 | } | |
3095 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3096 | { |
31d99776 DJ |
3097 | ptr += 8; |
3098 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3099 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3100 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3101 | num_segments = 1; | |
3102 | ||
3103 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3104 | { | |
3105 | ptr += 9; | |
3106 | while (*ptr && *ptr != ';') | |
3107 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3108 | num_segments++; | |
3109 | } | |
c906108c SS |
3110 | } |
3111 | else | |
3112 | lose = 1; | |
3113 | ||
3114 | if (lose) | |
8a3fe4f8 | 3115 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3116 | else if (*ptr != '\0') |
3117 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3118 | |
802188a7 | 3119 | offs = ((struct section_offsets *) |
a39a16c4 | 3120 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3121 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3122 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3123 | |
31d99776 DJ |
3124 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3125 | do_segments = (data != NULL); | |
3126 | do_sections = num_segments == 0; | |
c906108c | 3127 | |
28c32713 | 3128 | if (num_segments > 0) |
31d99776 | 3129 | { |
31d99776 DJ |
3130 | segments[0] = text_addr; |
3131 | segments[1] = data_addr; | |
3132 | } | |
28c32713 JB |
3133 | /* If we have two segments, we can still try to relocate everything |
3134 | by assuming that the .text and .data offsets apply to the whole | |
3135 | text and data segments. Convert the offsets given in the packet | |
3136 | to base addresses for symfile_map_offsets_to_segments. */ | |
3137 | else if (data && data->num_segments == 2) | |
3138 | { | |
3139 | segments[0] = data->segment_bases[0] + text_addr; | |
3140 | segments[1] = data->segment_bases[1] + data_addr; | |
3141 | num_segments = 2; | |
3142 | } | |
8d385431 DJ |
3143 | /* If the object file has only one segment, assume that it is text |
3144 | rather than data; main programs with no writable data are rare, | |
3145 | but programs with no code are useless. Of course the code might | |
3146 | have ended up in the data segment... to detect that we would need | |
3147 | the permissions here. */ | |
3148 | else if (data && data->num_segments == 1) | |
3149 | { | |
3150 | segments[0] = data->segment_bases[0] + text_addr; | |
3151 | num_segments = 1; | |
3152 | } | |
28c32713 JB |
3153 | /* There's no way to relocate by segment. */ |
3154 | else | |
3155 | do_segments = 0; | |
31d99776 DJ |
3156 | |
3157 | if (do_segments) | |
3158 | { | |
3159 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3160 | offs, num_segments, segments); | |
3161 | ||
3162 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3163 | error (_("Can not handle qOffsets TextSeg " |
3164 | "response with this symbol file")); | |
31d99776 DJ |
3165 | |
3166 | if (ret > 0) | |
3167 | do_sections = 0; | |
3168 | } | |
c906108c | 3169 | |
9ef895d6 DJ |
3170 | if (data) |
3171 | free_symfile_segment_data (data); | |
31d99776 DJ |
3172 | |
3173 | if (do_sections) | |
3174 | { | |
3175 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3176 | ||
3e43a32a MS |
3177 | /* This is a temporary kludge to force data and bss to use the |
3178 | same offsets because that's what nlmconv does now. The real | |
3179 | solution requires changes to the stub and remote.c that I | |
3180 | don't have time to do right now. */ | |
31d99776 DJ |
3181 | |
3182 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3183 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3184 | } | |
c906108c SS |
3185 | |
3186 | objfile_relocate (symfile_objfile, offs); | |
3187 | } | |
3188 | ||
74531fed PA |
3189 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3190 | threads we know are stopped already. This is used during the | |
3191 | initial remote connection in non-stop mode --- threads that are | |
3192 | reported as already being stopped are left stopped. */ | |
3193 | ||
3194 | static int | |
3195 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3196 | { | |
3197 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3198 | if (peek_stop_reply (thread->ptid)) | |
3199 | set_stop_requested (thread->ptid, 1); | |
3200 | ||
3201 | return 0; | |
3202 | } | |
3203 | ||
9a7071a8 JB |
3204 | /* Send interrupt_sequence to remote target. */ |
3205 | static void | |
eeae04df | 3206 | send_interrupt_sequence (void) |
9a7071a8 | 3207 | { |
5d93a237 TT |
3208 | struct remote_state *rs = get_remote_state (); |
3209 | ||
9a7071a8 | 3210 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3211 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3212 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3213 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3214 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3215 | { | |
5d93a237 | 3216 | serial_send_break (rs->remote_desc); |
c33e31fd | 3217 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3218 | } |
3219 | else | |
3220 | internal_error (__FILE__, __LINE__, | |
3221 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3222 | interrupt_sequence_mode); | |
3223 | } | |
3224 | ||
3405876a PA |
3225 | |
3226 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3227 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3228 | ||
3229 | static ptid_t | |
3230 | stop_reply_extract_thread (char *stop_reply) | |
3231 | { | |
3232 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3233 | { | |
3234 | char *p; | |
3235 | ||
3236 | /* Txx r:val ; r:val (...) */ | |
3237 | p = &stop_reply[3]; | |
3238 | ||
3239 | /* Look for "register" named "thread". */ | |
3240 | while (*p != '\0') | |
3241 | { | |
3242 | char *p1; | |
3243 | ||
3244 | p1 = strchr (p, ':'); | |
3245 | if (p1 == NULL) | |
3246 | return null_ptid; | |
3247 | ||
3248 | if (strncmp (p, "thread", p1 - p) == 0) | |
3249 | return read_ptid (++p1, &p); | |
3250 | ||
3251 | p1 = strchr (p, ';'); | |
3252 | if (p1 == NULL) | |
3253 | return null_ptid; | |
3254 | p1++; | |
3255 | ||
3256 | p = p1; | |
3257 | } | |
3258 | } | |
3259 | ||
3260 | return null_ptid; | |
3261 | } | |
3262 | ||
b7ea362b PA |
3263 | /* Determine the remote side's current thread. If we have a stop |
3264 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3265 | "thread" register we can extract the current thread from. If not, | |
3266 | ask the remote which is the current thread with qC. The former | |
3267 | method avoids a roundtrip. */ | |
3268 | ||
3269 | static ptid_t | |
3270 | get_current_thread (char *wait_status) | |
3271 | { | |
3272 | ptid_t ptid; | |
3273 | ||
3274 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3275 | the target architecture, which we haven't yet fully determined at | |
3276 | this point. */ | |
3277 | if (wait_status != NULL) | |
3278 | ptid = stop_reply_extract_thread (wait_status); | |
3279 | if (ptid_equal (ptid, null_ptid)) | |
3280 | ptid = remote_current_thread (inferior_ptid); | |
3281 | ||
3282 | return ptid; | |
3283 | } | |
3284 | ||
49c62f2e PA |
3285 | /* Query the remote target for which is the current thread/process, |
3286 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3287 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3288 | to return the current thread. |
3289 | ||
3290 | This function is called after handling the '?' or 'vRun' packets, | |
3291 | whose response is a stop reply from which we can also try | |
3292 | extracting the thread. If the target doesn't support the explicit | |
3293 | qC query, we infer the current thread from that stop reply, passed | |
3294 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3295 | |
3296 | static void | |
3405876a | 3297 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3298 | { |
3299 | struct remote_state *rs = get_remote_state (); | |
3300 | int fake_pid_p = 0; | |
3405876a | 3301 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3302 | |
3303 | inferior_ptid = null_ptid; | |
3304 | ||
b7ea362b PA |
3305 | /* Now, if we have thread information, update inferior_ptid. */ |
3306 | ptid = get_current_thread (wait_status); | |
3405876a | 3307 | |
49c62f2e PA |
3308 | if (!ptid_equal (ptid, null_ptid)) |
3309 | { | |
3310 | if (!remote_multi_process_p (rs)) | |
3311 | fake_pid_p = 1; | |
3312 | ||
3313 | inferior_ptid = ptid; | |
3314 | } | |
3315 | else | |
3316 | { | |
3317 | /* Without this, some commands which require an active target | |
3318 | (such as kill) won't work. This variable serves (at least) | |
3319 | double duty as both the pid of the target process (if it has | |
3320 | such), and as a flag indicating that a target is active. */ | |
3321 | inferior_ptid = magic_null_ptid; | |
3322 | fake_pid_p = 1; | |
3323 | } | |
3324 | ||
3325 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3326 | ||
3327 | /* Add the main thread. */ | |
3328 | add_thread_silent (inferior_ptid); | |
3329 | } | |
3330 | ||
9cbc821d | 3331 | static void |
04bd08de | 3332 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3333 | { |
c8d104ad PA |
3334 | struct remote_state *rs = get_remote_state (); |
3335 | struct packet_config *noack_config; | |
2d717e4f | 3336 | char *wait_status = NULL; |
8621d6a9 | 3337 | |
23860348 | 3338 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3339 | QUIT; |
c906108c | 3340 | |
9a7071a8 JB |
3341 | if (interrupt_on_connect) |
3342 | send_interrupt_sequence (); | |
3343 | ||
57e12211 | 3344 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3345 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3346 | |
1e51243a PA |
3347 | /* Signal other parts that we're going through the initial setup, |
3348 | and so things may not be stable yet. */ | |
3349 | rs->starting_up = 1; | |
3350 | ||
c8d104ad PA |
3351 | /* The first packet we send to the target is the optional "supported |
3352 | packets" request. If the target can answer this, it will tell us | |
3353 | which later probes to skip. */ | |
3354 | remote_query_supported (); | |
3355 | ||
d914c394 SS |
3356 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3357 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3358 | remote_set_permissions (); | |
3359 | ||
c8d104ad PA |
3360 | /* Next, we possibly activate noack mode. |
3361 | ||
3362 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3363 | enable noack mode if the stub reported a wish for it with | |
3364 | qSupported. | |
3365 | ||
3366 | If set to TRUE, then enable noack mode even if the stub didn't | |
3367 | report it in qSupported. If the stub doesn't reply OK, the | |
3368 | session ends with an error. | |
3369 | ||
3370 | If FALSE, then don't activate noack mode, regardless of what the | |
3371 | stub claimed should be the default with qSupported. */ | |
3372 | ||
3373 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3374 | ||
3375 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3376 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3377 | && noack_config->support == PACKET_ENABLE)) | |
3378 | { | |
3379 | putpkt ("QStartNoAckMode"); | |
3380 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3381 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3382 | rs->noack_mode = 1; | |
3383 | } | |
3384 | ||
04bd08de | 3385 | if (extended_p) |
5fe04517 PA |
3386 | { |
3387 | /* Tell the remote that we are using the extended protocol. */ | |
3388 | putpkt ("!"); | |
3389 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3390 | } | |
3391 | ||
9b224c5e PA |
3392 | /* Let the target know which signals it is allowed to pass down to |
3393 | the program. */ | |
3394 | update_signals_program_target (); | |
3395 | ||
d962ef82 DJ |
3396 | /* Next, if the target can specify a description, read it. We do |
3397 | this before anything involving memory or registers. */ | |
3398 | target_find_description (); | |
3399 | ||
6c95b8df PA |
3400 | /* Next, now that we know something about the target, update the |
3401 | address spaces in the program spaces. */ | |
3402 | update_address_spaces (); | |
3403 | ||
50c71eaf PA |
3404 | /* On OSs where the list of libraries is global to all |
3405 | processes, we fetch them early. */ | |
f5656ead | 3406 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3407 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3408 | |
74531fed PA |
3409 | if (non_stop) |
3410 | { | |
3411 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3412 | error (_("Non-stop mode requested, but remote " |
3413 | "does not support non-stop")); | |
74531fed PA |
3414 | |
3415 | putpkt ("QNonStop:1"); | |
3416 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3417 | ||
3418 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3419 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3420 | |
3421 | /* Find about threads and processes the stub is already | |
3422 | controlling. We default to adding them in the running state. | |
3423 | The '?' query below will then tell us about which threads are | |
3424 | stopped. */ | |
04bd08de | 3425 | remote_threads_info (target); |
74531fed PA |
3426 | } |
3427 | else if (rs->non_stop_aware) | |
3428 | { | |
3429 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3430 | Request it explicitly. */ |
74531fed PA |
3431 | putpkt ("QNonStop:0"); |
3432 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3433 | ||
3434 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3435 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3436 | } |
3437 | ||
a0743c90 YQ |
3438 | /* Upload TSVs regardless of whether the target is running or not. The |
3439 | remote stub, such as GDBserver, may have some predefined or builtin | |
3440 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3441 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3442 | { |
3443 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3444 | ||
3445 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3446 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3447 | } | |
3448 | ||
2d717e4f DJ |
3449 | /* Check whether the target is running now. */ |
3450 | putpkt ("?"); | |
3451 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3452 | ||
74531fed | 3453 | if (!non_stop) |
2d717e4f | 3454 | { |
e714e1bf UW |
3455 | ptid_t ptid; |
3456 | int fake_pid_p = 0; | |
3457 | struct inferior *inf; | |
3458 | ||
74531fed | 3459 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3460 | { |
04bd08de | 3461 | if (!extended_p) |
74531fed | 3462 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3463 | |
3464 | /* We're connected, but not running. Drop out before we | |
3465 | call start_remote. */ | |
e278ad5b | 3466 | rs->starting_up = 0; |
c35b1492 | 3467 | return; |
2d717e4f DJ |
3468 | } |
3469 | else | |
74531fed | 3470 | { |
74531fed PA |
3471 | /* Save the reply for later. */ |
3472 | wait_status = alloca (strlen (rs->buf) + 1); | |
3473 | strcpy (wait_status, rs->buf); | |
3474 | } | |
3475 | ||
b7ea362b PA |
3476 | /* Fetch thread list. */ |
3477 | target_find_new_threads (); | |
3478 | ||
74531fed PA |
3479 | /* Let the stub know that we want it to return the thread. */ |
3480 | set_continue_thread (minus_one_ptid); | |
3481 | ||
b7ea362b PA |
3482 | if (thread_count () == 0) |
3483 | { | |
3484 | /* Target has no concept of threads at all. GDB treats | |
3485 | non-threaded target as single-threaded; add a main | |
3486 | thread. */ | |
3487 | add_current_inferior_and_thread (wait_status); | |
3488 | } | |
3489 | else | |
3490 | { | |
3491 | /* We have thread information; select the thread the target | |
3492 | says should be current. If we're reconnecting to a | |
3493 | multi-threaded program, this will ideally be the thread | |
3494 | that last reported an event before GDB disconnected. */ | |
3495 | inferior_ptid = get_current_thread (wait_status); | |
3496 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3497 | { | |
3498 | /* Odd... The target was able to list threads, but not | |
3499 | tell us which thread was current (no "thread" | |
3500 | register in T stop reply?). Just pick the first | |
3501 | thread in the thread list then. */ | |
3502 | inferior_ptid = thread_list->ptid; | |
3503 | } | |
3504 | } | |
74531fed | 3505 | |
6e586cc5 YQ |
3506 | /* init_wait_for_inferior should be called before get_offsets in order |
3507 | to manage `inserted' flag in bp loc in a correct state. | |
3508 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3509 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3510 | start_remote, set `inserted' flag to 1. In the initialization of | |
3511 | inferior, breakpoint_init_inferior should be called first, and then | |
3512 | breakpoint_re_set can be called. If this order is broken, state of | |
3513 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3514 | manipulation. */ | |
3515 | init_wait_for_inferior (); | |
3516 | ||
74531fed PA |
3517 | get_offsets (); /* Get text, data & bss offsets. */ |
3518 | ||
d962ef82 DJ |
3519 | /* If we could not find a description using qXfer, and we know |
3520 | how to do it some other way, try again. This is not | |
3521 | supported for non-stop; it could be, but it is tricky if | |
3522 | there are no stopped threads when we connect. */ | |
04bd08de | 3523 | if (remote_read_description_p (target) |
f5656ead | 3524 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3525 | { |
3526 | target_clear_description (); | |
3527 | target_find_description (); | |
3528 | } | |
3529 | ||
74531fed PA |
3530 | /* Use the previously fetched status. */ |
3531 | gdb_assert (wait_status != NULL); | |
3532 | strcpy (rs->buf, wait_status); | |
3533 | rs->cached_wait_status = 1; | |
3534 | ||
3535 | immediate_quit--; | |
04bd08de | 3536 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3537 | } |
3538 | else | |
3539 | { | |
68c97600 PA |
3540 | /* Clear WFI global state. Do this before finding about new |
3541 | threads and inferiors, and setting the current inferior. | |
3542 | Otherwise we would clear the proceed status of the current | |
3543 | inferior when we want its stop_soon state to be preserved | |
3544 | (see notice_new_inferior). */ | |
3545 | init_wait_for_inferior (); | |
3546 | ||
74531fed PA |
3547 | /* In non-stop, we will either get an "OK", meaning that there |
3548 | are no stopped threads at this time; or, a regular stop | |
3549 | reply. In the latter case, there may be more than one thread | |
3550 | stopped --- we pull them all out using the vStopped | |
3551 | mechanism. */ | |
3552 | if (strcmp (rs->buf, "OK") != 0) | |
3553 | { | |
722247f1 | 3554 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3555 | |
722247f1 YQ |
3556 | /* remote_notif_get_pending_replies acks this one, and gets |
3557 | the rest out. */ | |
f48ff2a7 | 3558 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3559 | = remote_notif_parse (notif, rs->buf); |
3560 | remote_notif_get_pending_events (notif); | |
c906108c | 3561 | |
74531fed PA |
3562 | /* Make sure that threads that were stopped remain |
3563 | stopped. */ | |
3564 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3565 | } | |
2d717e4f | 3566 | |
74531fed PA |
3567 | if (target_can_async_p ()) |
3568 | target_async (inferior_event_handler, 0); | |
c906108c | 3569 | |
74531fed PA |
3570 | if (thread_count () == 0) |
3571 | { | |
04bd08de | 3572 | if (!extended_p) |
74531fed | 3573 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3574 | |
c35b1492 PA |
3575 | /* We're connected, but not running. Drop out before we |
3576 | call start_remote. */ | |
e278ad5b | 3577 | rs->starting_up = 0; |
c35b1492 PA |
3578 | return; |
3579 | } | |
74531fed PA |
3580 | |
3581 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3582 | |
74531fed PA |
3583 | /* Force the stub to choose a thread. */ |
3584 | set_general_thread (null_ptid); | |
c906108c | 3585 | |
74531fed PA |
3586 | /* Query it. */ |
3587 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3588 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3589 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3590 | |
74531fed PA |
3591 | get_offsets (); /* Get text, data & bss offsets. */ |
3592 | ||
3593 | /* In non-stop mode, any cached wait status will be stored in | |
3594 | the stop reply queue. */ | |
3595 | gdb_assert (wait_status == NULL); | |
f0223081 | 3596 | |
2455069d | 3597 | /* Report all signals during attach/startup. */ |
94bedb42 | 3598 | remote_pass_signals (target, 0, NULL); |
74531fed | 3599 | } |
c8d104ad | 3600 | |
c8d104ad PA |
3601 | /* If we connected to a live target, do some additional setup. */ |
3602 | if (target_has_execution) | |
3603 | { | |
f4ccffad | 3604 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3605 | remote_check_symbols (); |
c8d104ad | 3606 | } |
50c71eaf | 3607 | |
d5551862 SS |
3608 | /* Possibly the target has been engaged in a trace run started |
3609 | previously; find out where things are at. */ | |
8bd200f1 | 3610 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3611 | { |
00bf0b85 | 3612 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3613 | |
00bf0b85 SS |
3614 | if (current_trace_status ()->running) |
3615 | printf_filtered (_("Trace is already running on the target.\n")); | |
3616 | ||
00bf0b85 SS |
3617 | remote_upload_tracepoints (&uploaded_tps); |
3618 | ||
3619 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3620 | } |
3621 | ||
1e51243a PA |
3622 | /* The thread and inferior lists are now synchronized with the |
3623 | target, our symbols have been relocated, and we're merged the | |
3624 | target's tracepoints with ours. We're done with basic start | |
3625 | up. */ | |
3626 | rs->starting_up = 0; | |
3627 | ||
2567c7d9 | 3628 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3629 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3630 | && breakpoints_always_inserted_mode ()) |
3631 | insert_breakpoints (); | |
c906108c SS |
3632 | } |
3633 | ||
3634 | /* Open a connection to a remote debugger. | |
3635 | NAME is the filename used for communication. */ | |
3636 | ||
3637 | static void | |
fba45db2 | 3638 | remote_open (char *name, int from_tty) |
c906108c | 3639 | { |
75c99385 | 3640 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3641 | } |
3642 | ||
c906108c SS |
3643 | /* Open a connection to a remote debugger using the extended |
3644 | remote gdb protocol. NAME is the filename used for communication. */ | |
3645 | ||
3646 | static void | |
fba45db2 | 3647 | extended_remote_open (char *name, int from_tty) |
c906108c | 3648 | { |
75c99385 | 3649 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3650 | } |
3651 | ||
c906108c SS |
3652 | /* Generic code for opening a connection to a remote target. */ |
3653 | ||
d471ea57 AC |
3654 | static void |
3655 | init_all_packet_configs (void) | |
3656 | { | |
3657 | int i; | |
a744cf53 | 3658 | |
444abaca DJ |
3659 | for (i = 0; i < PACKET_MAX; i++) |
3660 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3661 | } |
3662 | ||
23860348 | 3663 | /* Symbol look-up. */ |
dc8acb97 MS |
3664 | |
3665 | static void | |
36d25514 | 3666 | remote_check_symbols (void) |
dc8acb97 | 3667 | { |
d01949b6 | 3668 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3669 | char *msg, *reply, *tmp; |
3670 | struct minimal_symbol *sym; | |
3671 | int end; | |
3672 | ||
63154eca PA |
3673 | /* The remote side has no concept of inferiors that aren't running |
3674 | yet, it only knows about running processes. If we're connected | |
3675 | but our current inferior is not running, we should not invite the | |
3676 | remote target to request symbol lookups related to its | |
3677 | (unrelated) current process. */ | |
3678 | if (!target_has_execution) | |
3679 | return; | |
3680 | ||
444abaca | 3681 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3682 | return; |
3683 | ||
63154eca PA |
3684 | /* Make sure the remote is pointing at the right process. Note |
3685 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3686 | set_general_process (); |
3687 | ||
6d820c5c DJ |
3688 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3689 | because we need both at the same time. */ | |
ea9c271d | 3690 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3691 | |
23860348 | 3692 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3693 | |
3694 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3695 | getpkt (&rs->buf, &rs->buf_size, 0); |
3696 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3697 | reply = rs->buf; |
dc8acb97 MS |
3698 | |
3699 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3700 | { | |
3701 | tmp = &reply[8]; | |
cfd77fa1 | 3702 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3703 | msg[end] = '\0'; |
3704 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3705 | if (sym == NULL) | |
ea9c271d | 3706 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3707 | else |
2bbe3cc1 | 3708 | { |
f5656ead | 3709 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
2bbe3cc1 DJ |
3710 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3711 | ||
3712 | /* If this is a function address, return the start of code | |
3713 | instead of any data function descriptor. */ | |
f5656ead | 3714 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3715 | sym_addr, |
3716 | ¤t_target); | |
3717 | ||
3718 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3719 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3720 | } |
3721 | ||
dc8acb97 | 3722 | putpkt (msg); |
6d820c5c | 3723 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3724 | reply = rs->buf; |
dc8acb97 MS |
3725 | } |
3726 | } | |
3727 | ||
9db8d71f DJ |
3728 | static struct serial * |
3729 | remote_serial_open (char *name) | |
3730 | { | |
3731 | static int udp_warning = 0; | |
3732 | ||
3733 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3734 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3735 | serial connection is reliable and not the serial connection promising | |
3736 | to be. */ | |
3737 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3738 | { | |
3e43a32a MS |
3739 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3740 | "Some events may be lost, rendering further debugging " | |
3741 | "impossible.")); | |
9db8d71f DJ |
3742 | udp_warning = 1; |
3743 | } | |
3744 | ||
3745 | return serial_open (name); | |
3746 | } | |
3747 | ||
d914c394 SS |
3748 | /* Inform the target of our permission settings. The permission flags |
3749 | work without this, but if the target knows the settings, it can do | |
3750 | a couple things. First, it can add its own check, to catch cases | |
3751 | that somehow manage to get by the permissions checks in target | |
3752 | methods. Second, if the target is wired to disallow particular | |
3753 | settings (for instance, a system in the field that is not set up to | |
3754 | be able to stop at a breakpoint), it can object to any unavailable | |
3755 | permissions. */ | |
3756 | ||
3757 | void | |
3758 | remote_set_permissions (void) | |
3759 | { | |
3760 | struct remote_state *rs = get_remote_state (); | |
3761 | ||
bba74b36 YQ |
3762 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3763 | "WriteReg:%x;WriteMem:%x;" | |
3764 | "InsertBreak:%x;InsertTrace:%x;" | |
3765 | "InsertFastTrace:%x;Stop:%x", | |
3766 | may_write_registers, may_write_memory, | |
3767 | may_insert_breakpoints, may_insert_tracepoints, | |
3768 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3769 | putpkt (rs->buf); |
3770 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3771 | ||
3772 | /* If the target didn't like the packet, warn the user. Do not try | |
3773 | to undo the user's settings, that would just be maddening. */ | |
3774 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3775 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3776 | } |
3777 | ||
be2a5f71 DJ |
3778 | /* This type describes each known response to the qSupported |
3779 | packet. */ | |
3780 | struct protocol_feature | |
3781 | { | |
3782 | /* The name of this protocol feature. */ | |
3783 | const char *name; | |
3784 | ||
3785 | /* The default for this protocol feature. */ | |
3786 | enum packet_support default_support; | |
3787 | ||
3788 | /* The function to call when this feature is reported, or after | |
3789 | qSupported processing if the feature is not supported. | |
3790 | The first argument points to this structure. The second | |
3791 | argument indicates whether the packet requested support be | |
3792 | enabled, disabled, or probed (or the default, if this function | |
3793 | is being called at the end of processing and this feature was | |
3794 | not reported). The third argument may be NULL; if not NULL, it | |
3795 | is a NUL-terminated string taken from the packet following | |
3796 | this feature's name and an equals sign. */ | |
3797 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3798 | const char *); | |
3799 | ||
3800 | /* The corresponding packet for this feature. Only used if | |
3801 | FUNC is remote_supported_packet. */ | |
3802 | int packet; | |
3803 | }; | |
3804 | ||
be2a5f71 DJ |
3805 | static void |
3806 | remote_supported_packet (const struct protocol_feature *feature, | |
3807 | enum packet_support support, | |
3808 | const char *argument) | |
3809 | { | |
3810 | if (argument) | |
3811 | { | |
3812 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3813 | " \"%s\"."), feature->name); | |
3814 | return; | |
3815 | } | |
3816 | ||
3817 | if (remote_protocol_packets[feature->packet].support | |
3818 | == PACKET_SUPPORT_UNKNOWN) | |
3819 | remote_protocol_packets[feature->packet].support = support; | |
3820 | } | |
be2a5f71 DJ |
3821 | |
3822 | static void | |
3823 | remote_packet_size (const struct protocol_feature *feature, | |
3824 | enum packet_support support, const char *value) | |
3825 | { | |
3826 | struct remote_state *rs = get_remote_state (); | |
3827 | ||
3828 | int packet_size; | |
3829 | char *value_end; | |
3830 | ||
3831 | if (support != PACKET_ENABLE) | |
3832 | return; | |
3833 | ||
3834 | if (value == NULL || *value == '\0') | |
3835 | { | |
3836 | warning (_("Remote target reported \"%s\" without a size."), | |
3837 | feature->name); | |
3838 | return; | |
3839 | } | |
3840 | ||
3841 | errno = 0; | |
3842 | packet_size = strtol (value, &value_end, 16); | |
3843 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3844 | { | |
3845 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3846 | feature->name, value); | |
3847 | return; | |
3848 | } | |
3849 | ||
3850 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3851 | { | |
3852 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3853 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3854 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3855 | } | |
3856 | ||
3857 | /* Record the new maximum packet size. */ | |
3858 | rs->explicit_packet_size = packet_size; | |
3859 | } | |
3860 | ||
82f73884 PA |
3861 | static void |
3862 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3863 | enum packet_support support, const char *value) | |
3864 | { | |
3865 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3866 | |
82f73884 PA |
3867 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3868 | } | |
3869 | ||
74531fed PA |
3870 | static void |
3871 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3872 | enum packet_support support, const char *value) | |
3873 | { | |
3874 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3875 | |
74531fed PA |
3876 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3877 | } | |
3878 | ||
782b2b07 SS |
3879 | static void |
3880 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3881 | enum packet_support support, | |
3882 | const char *value) | |
3883 | { | |
3884 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3885 | |
782b2b07 SS |
3886 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3887 | } | |
3888 | ||
3788aec7 LM |
3889 | static void |
3890 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3891 | enum packet_support support, | |
3892 | const char *value) | |
3893 | { | |
3894 | struct remote_state *rs = get_remote_state (); | |
3895 | ||
3896 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3897 | } | |
3898 | ||
d3ce09f5 SS |
3899 | static void |
3900 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3901 | enum packet_support support, | |
3902 | const char *value) | |
3903 | { | |
3904 | struct remote_state *rs = get_remote_state (); | |
3905 | ||
3906 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3907 | } | |
3908 | ||
7a697b8d SS |
3909 | static void |
3910 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3911 | enum packet_support support, | |
3912 | const char *value) | |
3913 | { | |
3914 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3915 | |
7a697b8d SS |
3916 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3917 | } | |
3918 | ||
0fb4aa4b PA |
3919 | static void |
3920 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3921 | enum packet_support support, | |
3922 | const char *value) | |
3923 | { | |
3924 | struct remote_state *rs = get_remote_state (); | |
3925 | ||
3926 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3927 | } | |
3928 | ||
1e4d1764 YQ |
3929 | static void |
3930 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3931 | enum packet_support support, | |
3932 | const char *value) | |
3933 | { | |
3934 | struct remote_state *rs = get_remote_state (); | |
3935 | ||
3936 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3937 | } | |
3938 | ||
d5551862 SS |
3939 | static void |
3940 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3941 | enum packet_support support, | |
3942 | const char *value) | |
3943 | { | |
3944 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3945 | |
d5551862 SS |
3946 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3947 | } | |
3948 | ||
d248b706 KY |
3949 | static void |
3950 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3951 | enum packet_support support, | |
3952 | const char *value) | |
3953 | { | |
3954 | struct remote_state *rs = get_remote_state (); | |
3955 | ||
3956 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3957 | } | |
3958 | ||
3065dfb6 SS |
3959 | static void |
3960 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3961 | enum packet_support support, | |
3962 | const char *value) | |
3963 | { | |
3964 | struct remote_state *rs = get_remote_state (); | |
3965 | ||
3966 | rs->string_tracing = (support == PACKET_ENABLE); | |
3967 | } | |
3968 | ||
ced63ec0 GB |
3969 | static void |
3970 | remote_augmented_libraries_svr4_read_feature | |
3971 | (const struct protocol_feature *feature, | |
3972 | enum packet_support support, const char *value) | |
3973 | { | |
3974 | struct remote_state *rs = get_remote_state (); | |
3975 | ||
3976 | rs->augmented_libraries_svr4_read = (support == PACKET_ENABLE); | |
3977 | } | |
3978 | ||
dc473cfb | 3979 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3980 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3981 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3982 | PACKET_qXfer_auxv }, |
23181151 DJ |
3983 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3984 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3985 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3986 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3987 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3988 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 GB |
3989 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
3990 | remote_augmented_libraries_svr4_read_feature, -1 }, | |
fd79ecee | 3991 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3992 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3993 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3994 | PACKET_qXfer_spu_read }, | |
3995 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3996 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3997 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3998 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3999 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4000 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4001 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4002 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4003 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4004 | PACKET_QPassSignals }, | |
9b224c5e PA |
4005 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4006 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4007 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4008 | PACKET_QStartNoAckMode }, | |
82f73884 | 4009 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 4010 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
4011 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4012 | PACKET_qXfer_siginfo_read }, | |
4013 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4014 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
4015 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
4016 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
4017 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
4018 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
4019 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
4020 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
4021 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
4022 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
4023 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
4024 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
4025 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
4026 | PACKET_InstallInTrace}, | |
d5551862 SS |
4027 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
4028 | -1 }, | |
40ab02ce MS |
4029 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4030 | PACKET_bc }, | |
4031 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4032 | PACKET_bs }, | |
409873ef SS |
4033 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4034 | PACKET_TracepointSource }, | |
d914c394 SS |
4035 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4036 | PACKET_QAllow }, | |
d248b706 KY |
4037 | { "EnableDisableTracepoints", PACKET_DISABLE, |
4038 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
4039 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4040 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4041 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4042 | PACKET_qXfer_uib }, | |
03583c20 UW |
4043 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4044 | PACKET_QDisableRandomization }, | |
d1feda86 | 4045 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4046 | { "QTBuffer:size", PACKET_DISABLE, |
4047 | remote_supported_packet, PACKET_QTBuffer_size}, | |
3065dfb6 SS |
4048 | { "tracenz", PACKET_DISABLE, |
4049 | remote_string_tracing_feature, -1 }, | |
9accd112 MM |
4050 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4051 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
4052 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
4053 | PACKET_qXfer_btrace } | |
be2a5f71 DJ |
4054 | }; |
4055 | ||
c8d5aac9 L |
4056 | static char *remote_support_xml; |
4057 | ||
4058 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4059 | ||
4060 | void | |
6e39997a | 4061 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4062 | { |
4063 | #if defined(HAVE_LIBEXPAT) | |
4064 | if (remote_support_xml == NULL) | |
c4f7c687 | 4065 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4066 | else |
4067 | { | |
4068 | char *copy = xstrdup (remote_support_xml + 13); | |
4069 | char *p = strtok (copy, ","); | |
4070 | ||
4071 | do | |
4072 | { | |
4073 | if (strcmp (p, xml) == 0) | |
4074 | { | |
4075 | /* already there */ | |
4076 | xfree (copy); | |
4077 | return; | |
4078 | } | |
4079 | } | |
4080 | while ((p = strtok (NULL, ",")) != NULL); | |
4081 | xfree (copy); | |
4082 | ||
94b0dee1 PA |
4083 | remote_support_xml = reconcat (remote_support_xml, |
4084 | remote_support_xml, ",", xml, | |
4085 | (char *) NULL); | |
c8d5aac9 L |
4086 | } |
4087 | #endif | |
4088 | } | |
4089 | ||
4090 | static char * | |
4091 | remote_query_supported_append (char *msg, const char *append) | |
4092 | { | |
4093 | if (msg) | |
94b0dee1 | 4094 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4095 | else |
4096 | return xstrdup (append); | |
4097 | } | |
4098 | ||
be2a5f71 DJ |
4099 | static void |
4100 | remote_query_supported (void) | |
4101 | { | |
4102 | struct remote_state *rs = get_remote_state (); | |
4103 | char *next; | |
4104 | int i; | |
4105 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4106 | ||
4107 | /* The packet support flags are handled differently for this packet | |
4108 | than for most others. We treat an error, a disabled packet, and | |
4109 | an empty response identically: any features which must be reported | |
4110 | to be used will be automatically disabled. An empty buffer | |
4111 | accomplishes this, since that is also the representation for a list | |
4112 | containing no features. */ | |
4113 | ||
4114 | rs->buf[0] = 0; | |
4115 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4116 | { | |
c8d5aac9 | 4117 | char *q = NULL; |
94b0dee1 | 4118 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4119 | |
901f9912 | 4120 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4121 | |
4122 | if (remote_support_xml) | |
4123 | q = remote_query_supported_append (q, remote_support_xml); | |
4124 | ||
dde08ee1 PA |
4125 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4126 | ||
4127 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4128 | putpkt (q); | |
82f73884 | 4129 | |
94b0dee1 PA |
4130 | do_cleanups (old_chain); |
4131 | ||
be2a5f71 DJ |
4132 | getpkt (&rs->buf, &rs->buf_size, 0); |
4133 | ||
4134 | /* If an error occured, warn, but do not return - just reset the | |
4135 | buffer to empty and go on to disable features. */ | |
4136 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4137 | == PACKET_ERROR) | |
4138 | { | |
4139 | warning (_("Remote failure reply: %s"), rs->buf); | |
4140 | rs->buf[0] = 0; | |
4141 | } | |
4142 | } | |
4143 | ||
4144 | memset (seen, 0, sizeof (seen)); | |
4145 | ||
4146 | next = rs->buf; | |
4147 | while (*next) | |
4148 | { | |
4149 | enum packet_support is_supported; | |
4150 | char *p, *end, *name_end, *value; | |
4151 | ||
4152 | /* First separate out this item from the rest of the packet. If | |
4153 | there's another item after this, we overwrite the separator | |
4154 | (terminated strings are much easier to work with). */ | |
4155 | p = next; | |
4156 | end = strchr (p, ';'); | |
4157 | if (end == NULL) | |
4158 | { | |
4159 | end = p + strlen (p); | |
4160 | next = end; | |
4161 | } | |
4162 | else | |
4163 | { | |
89be2091 DJ |
4164 | *end = '\0'; |
4165 | next = end + 1; | |
4166 | ||
be2a5f71 DJ |
4167 | if (end == p) |
4168 | { | |
4169 | warning (_("empty item in \"qSupported\" response")); | |
4170 | continue; | |
4171 | } | |
be2a5f71 DJ |
4172 | } |
4173 | ||
4174 | name_end = strchr (p, '='); | |
4175 | if (name_end) | |
4176 | { | |
4177 | /* This is a name=value entry. */ | |
4178 | is_supported = PACKET_ENABLE; | |
4179 | value = name_end + 1; | |
4180 | *name_end = '\0'; | |
4181 | } | |
4182 | else | |
4183 | { | |
4184 | value = NULL; | |
4185 | switch (end[-1]) | |
4186 | { | |
4187 | case '+': | |
4188 | is_supported = PACKET_ENABLE; | |
4189 | break; | |
4190 | ||
4191 | case '-': | |
4192 | is_supported = PACKET_DISABLE; | |
4193 | break; | |
4194 | ||
4195 | case '?': | |
4196 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4197 | break; | |
4198 | ||
4199 | default: | |
3e43a32a MS |
4200 | warning (_("unrecognized item \"%s\" " |
4201 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4202 | continue; |
4203 | } | |
4204 | end[-1] = '\0'; | |
4205 | } | |
4206 | ||
4207 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4208 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4209 | { | |
4210 | const struct protocol_feature *feature; | |
4211 | ||
4212 | seen[i] = 1; | |
4213 | feature = &remote_protocol_features[i]; | |
4214 | feature->func (feature, is_supported, value); | |
4215 | break; | |
4216 | } | |
4217 | } | |
4218 | ||
4219 | /* If we increased the packet size, make sure to increase the global | |
4220 | buffer size also. We delay this until after parsing the entire | |
4221 | qSupported packet, because this is the same buffer we were | |
4222 | parsing. */ | |
4223 | if (rs->buf_size < rs->explicit_packet_size) | |
4224 | { | |
4225 | rs->buf_size = rs->explicit_packet_size; | |
4226 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4227 | } | |
4228 | ||
4229 | /* Handle the defaults for unmentioned features. */ | |
4230 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4231 | if (!seen[i]) | |
4232 | { | |
4233 | const struct protocol_feature *feature; | |
4234 | ||
4235 | feature = &remote_protocol_features[i]; | |
4236 | feature->func (feature, feature->default_support, NULL); | |
4237 | } | |
4238 | } | |
4239 | ||
78a095c3 JK |
4240 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4241 | on it so remove them first. */ | |
4242 | ||
4243 | static void | |
4244 | remote_unpush_target (void) | |
4245 | { | |
4246 | pop_all_targets_above (process_stratum - 1); | |
4247 | } | |
be2a5f71 | 4248 | |
c906108c | 4249 | static void |
3e43a32a MS |
4250 | remote_open_1 (char *name, int from_tty, |
4251 | struct target_ops *target, int extended_p) | |
c906108c | 4252 | { |
d01949b6 | 4253 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4254 | |
c906108c | 4255 | if (name == 0) |
8a3fe4f8 | 4256 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4257 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4258 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4259 | |
23860348 | 4260 | /* See FIXME above. */ |
c6ebd6cf | 4261 | if (!target_async_permitted) |
92d1e331 | 4262 | wait_forever_enabled_p = 1; |
6426a772 | 4263 | |
2d717e4f | 4264 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4265 | Ask this question first, before target_preopen has a chance to kill |
4266 | anything. */ | |
5d93a237 | 4267 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4268 | { |
78a095c3 JK |
4269 | if (from_tty |
4270 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4271 | error (_("Still connected.")); |
4272 | } | |
4273 | ||
78a095c3 | 4274 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4275 | target_preopen (from_tty); |
4276 | ||
89be2091 | 4277 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4278 | xfree (rs->last_pass_packet); |
4279 | rs->last_pass_packet = NULL; | |
89be2091 | 4280 | |
9b224c5e PA |
4281 | /* Make sure we send the program signals list the next time we |
4282 | resume. */ | |
5e4a05c4 TT |
4283 | xfree (rs->last_program_signals_packet); |
4284 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4285 | |
ad9a8f3f | 4286 | remote_fileio_reset (); |
1dd41f16 NS |
4287 | reopen_exec_file (); |
4288 | reread_symbols (); | |
4289 | ||
5d93a237 TT |
4290 | rs->remote_desc = remote_serial_open (name); |
4291 | if (!rs->remote_desc) | |
c906108c SS |
4292 | perror_with_name (name); |
4293 | ||
4294 | if (baud_rate != -1) | |
4295 | { | |
5d93a237 | 4296 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4297 | { |
9b74d5d3 KB |
4298 | /* The requested speed could not be set. Error out to |
4299 | top level after closing remote_desc. Take care to | |
4300 | set remote_desc to NULL to avoid closing remote_desc | |
4301 | more than once. */ | |
5d93a237 TT |
4302 | serial_close (rs->remote_desc); |
4303 | rs->remote_desc = NULL; | |
c906108c SS |
4304 | perror_with_name (name); |
4305 | } | |
4306 | } | |
4307 | ||
5d93a237 | 4308 | serial_raw (rs->remote_desc); |
c906108c SS |
4309 | |
4310 | /* If there is something sitting in the buffer we might take it as a | |
4311 | response to a command, which would be bad. */ | |
5d93a237 | 4312 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4313 | |
4314 | if (from_tty) | |
4315 | { | |
4316 | puts_filtered ("Remote debugging using "); | |
4317 | puts_filtered (name); | |
4318 | puts_filtered ("\n"); | |
4319 | } | |
23860348 | 4320 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4321 | |
74531fed PA |
4322 | /* Register extra event sources in the event loop. */ |
4323 | remote_async_inferior_event_token | |
4324 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4325 | NULL); | |
5965e028 | 4326 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4327 | |
be2a5f71 DJ |
4328 | /* Reset the target state; these things will be queried either by |
4329 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4330 | init_all_packet_configs (); |
74531fed | 4331 | rs->cached_wait_status = 0; |
be2a5f71 | 4332 | rs->explicit_packet_size = 0; |
a6f3e723 | 4333 | rs->noack_mode = 0; |
82f73884 PA |
4334 | rs->multi_process_aware = 0; |
4335 | rs->extended = extended_p; | |
74531fed | 4336 | rs->non_stop_aware = 0; |
e24a49d8 | 4337 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4338 | rs->ctrlc_pending_p = 0; |
802188a7 | 4339 | |
47f8a51d TT |
4340 | rs->general_thread = not_sent_ptid; |
4341 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4342 | rs->remote_traceframe_number = -1; |
c906108c | 4343 | |
9d1f7ab2 | 4344 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4345 | rs->use_threadinfo_query = 1; |
4346 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4347 | |
c6ebd6cf | 4348 | if (target_async_permitted) |
92d1e331 | 4349 | { |
23860348 | 4350 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4351 | remote_async_terminal_ours_p = 1; |
4352 | ||
4353 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4354 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4355 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4356 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4357 | around this. Eventually a mechanism that allows |
92d1e331 | 4358 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4359 | implemented. */ |
92d1e331 DJ |
4360 | wait_forever_enabled_p = 0; |
4361 | } | |
4362 | ||
23860348 | 4363 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4364 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4365 | |
74531fed PA |
4366 | /* Start afresh. */ |
4367 | init_thread_list (); | |
4368 | ||
36918e70 | 4369 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4370 | target (we'd otherwise be in an inconsistent state) and then |
4371 | propogate the error on up the exception chain. This ensures that | |
4372 | the caller doesn't stumble along blindly assuming that the | |
4373 | function succeeded. The CLI doesn't have this problem but other | |
4374 | UI's, such as MI do. | |
36918e70 AC |
4375 | |
4376 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4377 | this function should return an error indication letting the | |
ce2826aa | 4378 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4379 | ``target remote'' is directly wired to this function making that |
4380 | impossible. On a positive note, the CLI side of this problem has | |
4381 | been fixed - the function set_cmd_context() makes it possible for | |
4382 | all the ``target ....'' commands to share a common callback | |
4383 | function. See cli-dump.c. */ | |
109c3e39 | 4384 | { |
04bd08de | 4385 | volatile struct gdb_exception ex; |
2d717e4f | 4386 | |
04bd08de TT |
4387 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4388 | { | |
4389 | remote_start_remote (from_tty, target, extended_p); | |
4390 | } | |
109c3e39 AC |
4391 | if (ex.reason < 0) |
4392 | { | |
c8d104ad PA |
4393 | /* Pop the partially set up target - unless something else did |
4394 | already before throwing the exception. */ | |
5d93a237 | 4395 | if (rs->remote_desc != NULL) |
78a095c3 | 4396 | remote_unpush_target (); |
c6ebd6cf | 4397 | if (target_async_permitted) |
109c3e39 AC |
4398 | wait_forever_enabled_p = 1; |
4399 | throw_exception (ex); | |
4400 | } | |
4401 | } | |
c906108c | 4402 | |
c6ebd6cf | 4403 | if (target_async_permitted) |
92d1e331 | 4404 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4405 | } |
4406 | ||
c906108c SS |
4407 | /* This takes a program previously attached to and detaches it. After |
4408 | this is done, GDB can be used to debug some other program. We | |
4409 | better not have left any breakpoints in the target program or it'll | |
4410 | die when it hits one. */ | |
4411 | ||
4412 | static void | |
52554a0e | 4413 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4414 | { |
82f73884 | 4415 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4416 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4417 | |
4418 | if (args) | |
8a3fe4f8 | 4419 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4420 | |
2d717e4f DJ |
4421 | if (!target_has_execution) |
4422 | error (_("No process to detach from.")); | |
4423 | ||
7cee1e54 PA |
4424 | if (from_tty) |
4425 | { | |
4426 | char *exec_file = get_exec_file (0); | |
4427 | if (exec_file == NULL) | |
4428 | exec_file = ""; | |
4429 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4430 | target_pid_to_str (pid_to_ptid (pid))); | |
4431 | gdb_flush (gdb_stdout); | |
4432 | } | |
4433 | ||
c906108c | 4434 | /* Tell the remote target to detach. */ |
82f73884 | 4435 | if (remote_multi_process_p (rs)) |
bba74b36 | 4436 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4437 | else |
4438 | strcpy (rs->buf, "D"); | |
4439 | ||
4ddda9b5 PA |
4440 | putpkt (rs->buf); |
4441 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4442 | ||
82f73884 PA |
4443 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4444 | ; | |
4445 | else if (rs->buf[0] == '\0') | |
4446 | error (_("Remote doesn't know how to detach")); | |
4447 | else | |
4ddda9b5 | 4448 | error (_("Can't detach process.")); |
c906108c | 4449 | |
7cee1e54 PA |
4450 | if (from_tty && !extended) |
4451 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4452 | |
82f73884 | 4453 | target_mourn_inferior (); |
2d717e4f DJ |
4454 | } |
4455 | ||
4456 | static void | |
52554a0e | 4457 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4458 | { |
4459 | remote_detach_1 (args, from_tty, 0); | |
4460 | } | |
4461 | ||
4462 | static void | |
52554a0e | 4463 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4464 | { |
4465 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4466 | } |
4467 | ||
6ad8ae5c DJ |
4468 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4469 | ||
43ff13b4 | 4470 | static void |
597320e7 | 4471 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4472 | { |
43ff13b4 | 4473 | if (args) |
2d717e4f | 4474 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4475 | |
2d717e4f DJ |
4476 | /* Make sure we unpush even the extended remote targets; mourn |
4477 | won't do it. So call remote_mourn_1 directly instead of | |
4478 | target_mourn_inferior. */ | |
4479 | remote_mourn_1 (target); | |
4480 | ||
43ff13b4 JM |
4481 | if (from_tty) |
4482 | puts_filtered ("Ending remote debugging.\n"); | |
4483 | } | |
4484 | ||
2d717e4f DJ |
4485 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4486 | be chatty about it. */ | |
4487 | ||
4488 | static void | |
4489 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4490 | { | |
4491 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4492 | int pid; |
96ef3384 | 4493 | char *wait_status = NULL; |
2d717e4f | 4494 | |
74164c56 | 4495 | pid = parse_pid_to_attach (args); |
2d717e4f | 4496 | |
74164c56 JK |
4497 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4498 | way as in other targets. */ | |
2d717e4f DJ |
4499 | |
4500 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4501 | error (_("This target does not support attaching to a process")); | |
4502 | ||
7cee1e54 PA |
4503 | if (from_tty) |
4504 | { | |
4505 | char *exec_file = get_exec_file (0); | |
4506 | ||
4507 | if (exec_file) | |
4508 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4509 | target_pid_to_str (pid_to_ptid (pid))); | |
4510 | else | |
4511 | printf_unfiltered (_("Attaching to %s\n"), | |
4512 | target_pid_to_str (pid_to_ptid (pid))); | |
4513 | ||
4514 | gdb_flush (gdb_stdout); | |
4515 | } | |
4516 | ||
bba74b36 | 4517 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4518 | putpkt (rs->buf); |
4519 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4520 | ||
3e43a32a MS |
4521 | if (packet_ok (rs->buf, |
4522 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4523 | { |
74531fed PA |
4524 | if (!non_stop) |
4525 | { | |
4526 | /* Save the reply for later. */ | |
4527 | wait_status = alloca (strlen (rs->buf) + 1); | |
4528 | strcpy (wait_status, rs->buf); | |
4529 | } | |
4530 | else if (strcmp (rs->buf, "OK") != 0) | |
4531 | error (_("Attaching to %s failed with: %s"), | |
4532 | target_pid_to_str (pid_to_ptid (pid)), | |
4533 | rs->buf); | |
2d717e4f DJ |
4534 | } |
4535 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4536 | error (_("This target does not support attaching to a process")); | |
4537 | else | |
4538 | error (_("Attaching to %s failed"), | |
4539 | target_pid_to_str (pid_to_ptid (pid))); | |
4540 | ||
49c62f2e | 4541 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4542 | |
2d717e4f | 4543 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4544 | |
bad34192 PA |
4545 | if (non_stop) |
4546 | { | |
4547 | struct thread_info *thread; | |
79d7f229 | 4548 | |
bad34192 PA |
4549 | /* Get list of threads. */ |
4550 | remote_threads_info (target); | |
82f73884 | 4551 | |
bad34192 PA |
4552 | thread = first_thread_of_process (pid); |
4553 | if (thread) | |
4554 | inferior_ptid = thread->ptid; | |
4555 | else | |
4556 | inferior_ptid = pid_to_ptid (pid); | |
4557 | ||
4558 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4559 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4560 | } |
74531fed | 4561 | else |
bad34192 PA |
4562 | { |
4563 | /* Now, if we have thread information, update inferior_ptid. */ | |
4564 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4565 | ||
4566 | /* Add the main thread to the thread list. */ | |
4567 | add_thread_silent (inferior_ptid); | |
4568 | } | |
c0a2216e | 4569 | |
96ef3384 UW |
4570 | /* Next, if the target can specify a description, read it. We do |
4571 | this before anything involving memory or registers. */ | |
4572 | target_find_description (); | |
4573 | ||
74531fed PA |
4574 | if (!non_stop) |
4575 | { | |
4576 | /* Use the previously fetched status. */ | |
4577 | gdb_assert (wait_status != NULL); | |
4578 | ||
4579 | if (target_can_async_p ()) | |
4580 | { | |
722247f1 YQ |
4581 | struct notif_event *reply |
4582 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4583 | |
722247f1 | 4584 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4585 | |
4586 | target_async (inferior_event_handler, 0); | |
4587 | } | |
4588 | else | |
4589 | { | |
4590 | gdb_assert (wait_status != NULL); | |
4591 | strcpy (rs->buf, wait_status); | |
4592 | rs->cached_wait_status = 1; | |
4593 | } | |
4594 | } | |
4595 | else | |
4596 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4597 | } |
4598 | ||
4599 | static void | |
136d6dae | 4600 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4601 | { |
136d6dae | 4602 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4603 | } |
4604 | ||
c906108c | 4605 | \f |
506fb367 DJ |
4606 | /* Check for the availability of vCont. This function should also check |
4607 | the response. */ | |
c906108c SS |
4608 | |
4609 | static void | |
6d820c5c | 4610 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4611 | { |
2e9f7625 | 4612 | char *buf; |
6d820c5c | 4613 | |
2e9f7625 DJ |
4614 | strcpy (rs->buf, "vCont?"); |
4615 | putpkt (rs->buf); | |
6d820c5c | 4616 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4617 | buf = rs->buf; |
c906108c | 4618 | |
506fb367 DJ |
4619 | /* Make sure that the features we assume are supported. */ |
4620 | if (strncmp (buf, "vCont", 5) == 0) | |
4621 | { | |
4622 | char *p = &buf[5]; | |
4623 | int support_s, support_S, support_c, support_C; | |
4624 | ||
4625 | support_s = 0; | |
4626 | support_S = 0; | |
4627 | support_c = 0; | |
4628 | support_C = 0; | |
d458bd84 | 4629 | rs->supports_vCont.t = 0; |
c1e36e3e | 4630 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4631 | while (p && *p == ';') |
4632 | { | |
4633 | p++; | |
4634 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4635 | support_s = 1; | |
4636 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4637 | support_S = 1; | |
4638 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4639 | support_c = 1; | |
4640 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4641 | support_C = 1; | |
74531fed | 4642 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4643 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4644 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4645 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4646 | |
4647 | p = strchr (p, ';'); | |
4648 | } | |
c906108c | 4649 | |
506fb367 DJ |
4650 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4651 | BUF will make packet_ok disable the packet. */ | |
4652 | if (!support_s || !support_S || !support_c || !support_C) | |
4653 | buf[0] = 0; | |
4654 | } | |
c906108c | 4655 | |
444abaca | 4656 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4657 | } |
c906108c | 4658 | |
0d8f58ca PA |
4659 | /* Helper function for building "vCont" resumptions. Write a |
4660 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4661 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4662 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4663 | resumed thread should be single-stepped and/or signalled. If PTID | |
4664 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4665 | represents a process, then all threads of the process are resumed; | |
4666 | the thread to be stepped and/or signalled is given in the global | |
4667 | INFERIOR_PTID. */ | |
4668 | ||
4669 | static char * | |
4670 | append_resumption (char *p, char *endp, | |
2ea28649 | 4671 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4672 | { |
4673 | struct remote_state *rs = get_remote_state (); | |
4674 | ||
a493e3e2 | 4675 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4676 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4677 | else if (step |
4678 | /* GDB is willing to range step. */ | |
4679 | && use_range_stepping | |
4680 | /* Target supports range stepping. */ | |
4681 | && rs->supports_vCont.r | |
4682 | /* We don't currently support range stepping multiple | |
4683 | threads with a wildcard (though the protocol allows it, | |
4684 | so stubs shouldn't make an active effort to forbid | |
4685 | it). */ | |
4686 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4687 | { | |
4688 | struct thread_info *tp; | |
4689 | ||
4690 | if (ptid_equal (ptid, minus_one_ptid)) | |
4691 | { | |
4692 | /* If we don't know about the target thread's tid, then | |
4693 | we're resuming magic_null_ptid (see caller). */ | |
4694 | tp = find_thread_ptid (magic_null_ptid); | |
4695 | } | |
4696 | else | |
4697 | tp = find_thread_ptid (ptid); | |
4698 | gdb_assert (tp != NULL); | |
4699 | ||
4700 | if (tp->control.may_range_step) | |
4701 | { | |
4702 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4703 | ||
4704 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4705 | phex_nz (tp->control.step_range_start, | |
4706 | addr_size), | |
4707 | phex_nz (tp->control.step_range_end, | |
4708 | addr_size)); | |
4709 | } | |
4710 | else | |
4711 | p += xsnprintf (p, endp - p, ";s"); | |
4712 | } | |
0d8f58ca PA |
4713 | else if (step) |
4714 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4715 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4716 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4717 | else | |
4718 | p += xsnprintf (p, endp - p, ";c"); | |
4719 | ||
4720 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4721 | { | |
4722 | ptid_t nptid; | |
4723 | ||
4724 | /* All (-1) threads of process. */ | |
4725 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4726 | ||
4727 | p += xsnprintf (p, endp - p, ":"); | |
4728 | p = write_ptid (p, endp, nptid); | |
4729 | } | |
4730 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4731 | { | |
4732 | p += xsnprintf (p, endp - p, ":"); | |
4733 | p = write_ptid (p, endp, ptid); | |
4734 | } | |
4735 | ||
4736 | return p; | |
4737 | } | |
4738 | ||
e5ef252a PA |
4739 | /* Append a vCont continue-with-signal action for threads that have a |
4740 | non-zero stop signal. */ | |
4741 | ||
4742 | static char * | |
4743 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4744 | { | |
4745 | struct thread_info *thread; | |
4746 | ||
4747 | ALL_THREADS (thread) | |
4748 | if (ptid_match (thread->ptid, ptid) | |
4749 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4750 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4751 | && signal_pass_state (thread->suspend.stop_signal)) | |
4752 | { | |
4753 | p = append_resumption (p, endp, thread->ptid, | |
4754 | 0, thread->suspend.stop_signal); | |
4755 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4756 | } | |
4757 | ||
4758 | return p; | |
4759 | } | |
4760 | ||
506fb367 DJ |
4761 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4762 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4763 | resumed thread should be single-stepped and/or signalled. If PTID |
4764 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4765 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4766 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4767 | |
506fb367 DJ |
4768 | This function issues a strict subset of all possible vCont commands at the |
4769 | moment. */ | |
44eaed12 | 4770 | |
506fb367 | 4771 | static int |
2ea28649 | 4772 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4773 | { |
4774 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4775 | char *p; |
4776 | char *endp; | |
44eaed12 | 4777 | |
444abaca | 4778 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4779 | remote_vcont_probe (rs); |
44eaed12 | 4780 | |
444abaca | 4781 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4782 | return 0; |
44eaed12 | 4783 | |
82f73884 PA |
4784 | p = rs->buf; |
4785 | endp = rs->buf + get_remote_packet_size (); | |
4786 | ||
506fb367 DJ |
4787 | /* If we could generate a wider range of packets, we'd have to worry |
4788 | about overflowing BUF. Should there be a generic | |
4789 | "multi-part-packet" packet? */ | |
4790 | ||
0d8f58ca PA |
4791 | p += xsnprintf (p, endp - p, "vCont"); |
4792 | ||
79d7f229 | 4793 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4794 | { |
79d7f229 PA |
4795 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4796 | so we don't have any TID numbers the inferior will | |
4797 | understand. Make sure to only send forms that do not specify | |
4798 | a TID. */ | |
a9cbf802 | 4799 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4800 | } |
0d8f58ca | 4801 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4802 | { |
0d8f58ca PA |
4803 | /* Resume all threads (of all processes, or of a single |
4804 | process), with preference for INFERIOR_PTID. This assumes | |
4805 | inferior_ptid belongs to the set of all threads we are about | |
4806 | to resume. */ | |
a493e3e2 | 4807 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4808 | { |
0d8f58ca PA |
4809 | /* Step inferior_ptid, with or without signal. */ |
4810 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4811 | } |
0d8f58ca | 4812 | |
e5ef252a PA |
4813 | /* Also pass down any pending signaled resumption for other |
4814 | threads not the current. */ | |
4815 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4816 | ||
0d8f58ca | 4817 | /* And continue others without a signal. */ |
a493e3e2 | 4818 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4819 | } |
4820 | else | |
506fb367 DJ |
4821 | { |
4822 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4823 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4824 | } |
c906108c | 4825 | |
82f73884 PA |
4826 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4827 | putpkt (rs->buf); | |
506fb367 | 4828 | |
74531fed PA |
4829 | if (non_stop) |
4830 | { | |
4831 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4832 | reply will be reported asynchronously by means of a `%Stop' | |
4833 | notification. */ | |
4834 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4835 | if (strcmp (rs->buf, "OK") != 0) | |
4836 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4837 | } | |
4838 | ||
506fb367 | 4839 | return 1; |
c906108c | 4840 | } |
43ff13b4 | 4841 | |
506fb367 DJ |
4842 | /* Tell the remote machine to resume. */ |
4843 | ||
43ff13b4 | 4844 | static void |
28439f5e | 4845 | remote_resume (struct target_ops *ops, |
2ea28649 | 4846 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4847 | { |
d01949b6 | 4848 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4849 | char *buf; |
43ff13b4 | 4850 | |
722247f1 YQ |
4851 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4852 | (explained in remote-notif.c:handle_notification) so | |
4853 | remote_notif_process is not called. We need find a place where | |
4854 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4855 | before resuming inferior, because inferior was stopped and no RSP | |
4856 | traffic at that moment. */ | |
4857 | if (!non_stop) | |
5965e028 | 4858 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4859 | |
b73be471 | 4860 | rs->last_sent_signal = siggnal; |
280ceea3 | 4861 | rs->last_sent_step = step; |
43ff13b4 | 4862 | |
506fb367 | 4863 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4864 | /* No reverse support (yet) for vCont. */ |
4865 | if (execution_direction != EXEC_REVERSE) | |
4866 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4867 | goto done; | |
506fb367 | 4868 | |
79d7f229 PA |
4869 | /* All other supported resume packets do use Hc, so set the continue |
4870 | thread. */ | |
4871 | if (ptid_equal (ptid, minus_one_ptid)) | |
4872 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4873 | else |
79d7f229 | 4874 | set_continue_thread (ptid); |
506fb367 | 4875 | |
2e9f7625 | 4876 | buf = rs->buf; |
b2175913 MS |
4877 | if (execution_direction == EXEC_REVERSE) |
4878 | { | |
4879 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4880 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4881 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4882 | siggnal); |
40ab02ce MS |
4883 | |
4884 | if (step | |
4885 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4886 | error (_("Remote reverse-step not supported.")); | |
4887 | if (!step | |
4888 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4889 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4890 | |
b2175913 MS |
4891 | strcpy (buf, step ? "bs" : "bc"); |
4892 | } | |
a493e3e2 | 4893 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4894 | { |
4895 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4896 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4897 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4898 | buf[3] = '\0'; |
4899 | } | |
4900 | else | |
c5aa993b | 4901 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4902 | |
44eaed12 | 4903 | putpkt (buf); |
43ff13b4 | 4904 | |
75c99385 | 4905 | done: |
2acceee2 | 4906 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4907 | with the event loop. NOTE: this is the one place where all the |
4908 | execution commands end up. We could alternatively do this in each | |
23860348 | 4909 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4910 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4911 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4912 | NOT asynchronously. */ |
362646f5 | 4913 | if (target_can_async_p ()) |
2acceee2 | 4914 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4915 | |
4916 | /* We've just told the target to resume. The remote server will | |
4917 | wait for the inferior to stop, and then send a stop reply. In | |
4918 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4919 | because the stub wouldn't be ready to process it. This applies |
4920 | only to the base all-stop protocol, however. In non-stop (which | |
4921 | only supports vCont), the stub replies with an "OK", and is | |
4922 | immediate able to process further serial input. */ | |
4923 | if (!non_stop) | |
4924 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4925 | } |
c906108c | 4926 | \f |
43ff13b4 JM |
4927 | |
4928 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4929 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4930 | static void |
934b9bac | 4931 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 4932 | { |
934b9bac | 4933 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
4934 | } |
4935 | ||
23860348 | 4936 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4937 | static void |
934b9bac | 4938 | async_handle_remote_sigint (int sig) |
43ff13b4 | 4939 | { |
934b9bac JK |
4940 | signal (sig, async_handle_remote_sigint_twice); |
4941 | mark_async_signal_handler (async_sigint_remote_token); | |
43ff13b4 JM |
4942 | } |
4943 | ||
4944 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4945 | sent once. It will take effect the second time that the user sends | |
23860348 | 4946 | a ^C. */ |
43ff13b4 | 4947 | static void |
934b9bac | 4948 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 4949 | { |
934b9bac JK |
4950 | signal (sig, async_handle_remote_sigint); |
4951 | mark_async_signal_handler (async_sigint_remote_twice_token); | |
43ff13b4 JM |
4952 | } |
4953 | ||
6426a772 | 4954 | /* Perform the real interruption of the target execution, in response |
23860348 | 4955 | to a ^C. */ |
c5aa993b | 4956 | static void |
fba45db2 | 4957 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4958 | { |
4959 | if (remote_debug) | |
248fd3bf | 4960 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4961 | |
94cc34af | 4962 | target_stop (inferior_ptid); |
43ff13b4 JM |
4963 | } |
4964 | ||
0df8b418 | 4965 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4966 | up on the target alltogether. */ |
47e1ce27 | 4967 | static void |
fba45db2 | 4968 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4969 | { |
2df3850c | 4970 | if (remote_debug) |
248fd3bf | 4971 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4972 | |
4973 | interrupt_query (); | |
43ff13b4 JM |
4974 | } |
4975 | ||
4976 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4977 | stopped. */ |
6426a772 | 4978 | static void |
934b9bac | 4979 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
4980 | { |
4981 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4982 | } |
4983 | ||
c906108c SS |
4984 | /* Send ^C to target to halt it. Target will respond, and send us a |
4985 | packet. */ | |
507f3c78 | 4986 | static void (*ofunc) (int); |
c906108c | 4987 | |
0df8b418 MS |
4988 | /* The command line interface's stop routine. This function is installed |
4989 | as a signal handler for SIGINT. The first time a user requests a | |
4990 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4991 | response from the target (it didn't stop when the user requested it), |
23860348 | 4992 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4993 | static void |
934b9bac | 4994 | sync_remote_interrupt (int signo) |
c906108c | 4995 | { |
23860348 | 4996 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 4997 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 4998 | |
934b9bac | 4999 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5000 | } |
5001 | ||
5002 | /* The user typed ^C twice. */ | |
5003 | ||
5004 | static void | |
934b9bac | 5005 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5006 | { |
5007 | signal (signo, ofunc); | |
934b9bac JK |
5008 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5009 | signal (signo, sync_remote_interrupt); | |
c906108c | 5010 | } |
7a292a7a | 5011 | |
74531fed PA |
5012 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5013 | thread, all threads of a remote process, or all threads of all | |
5014 | processes. */ | |
5015 | ||
5016 | static void | |
5017 | remote_stop_ns (ptid_t ptid) | |
5018 | { | |
5019 | struct remote_state *rs = get_remote_state (); | |
5020 | char *p = rs->buf; | |
5021 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
5022 | |
5023 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
5024 | remote_vcont_probe (rs); | |
5025 | ||
d458bd84 | 5026 | if (!rs->supports_vCont.t) |
74531fed PA |
5027 | error (_("Remote server does not support stopping threads")); |
5028 | ||
f91d3df5 PA |
5029 | if (ptid_equal (ptid, minus_one_ptid) |
5030 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5031 | p += xsnprintf (p, endp - p, "vCont;t"); |
5032 | else | |
5033 | { | |
5034 | ptid_t nptid; | |
5035 | ||
74531fed PA |
5036 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5037 | ||
5038 | if (ptid_is_pid (ptid)) | |
5039 | /* All (-1) threads of process. */ | |
5040 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
5041 | else | |
5042 | { | |
5043 | /* Small optimization: if we already have a stop reply for | |
5044 | this thread, no use in telling the stub we want this | |
5045 | stopped. */ | |
5046 | if (peek_stop_reply (ptid)) | |
5047 | return; | |
5048 | ||
5049 | nptid = ptid; | |
5050 | } | |
5051 | ||
a9cbf802 | 5052 | write_ptid (p, endp, nptid); |
74531fed PA |
5053 | } |
5054 | ||
5055 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5056 | come in asynchronously by notification. */ | |
5057 | putpkt (rs->buf); | |
5058 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5059 | if (strcmp (rs->buf, "OK") != 0) | |
5060 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5061 | } | |
5062 | ||
5063 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5064 | remote target. It is undefined which thread of which process | |
5065 | reports the stop. */ | |
5066 | ||
5067 | static void | |
5068 | remote_stop_as (ptid_t ptid) | |
5069 | { | |
5070 | struct remote_state *rs = get_remote_state (); | |
5071 | ||
3a29589a DJ |
5072 | rs->ctrlc_pending_p = 1; |
5073 | ||
74531fed PA |
5074 | /* If the inferior is stopped already, but the core didn't know |
5075 | about it yet, just ignore the request. The cached wait status | |
5076 | will be collected in remote_wait. */ | |
5077 | if (rs->cached_wait_status) | |
5078 | return; | |
5079 | ||
9a7071a8 JB |
5080 | /* Send interrupt_sequence to remote target. */ |
5081 | send_interrupt_sequence (); | |
74531fed PA |
5082 | } |
5083 | ||
0df8b418 | 5084 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5085 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5086 | will eventually end up here. */ |
74531fed | 5087 | |
c906108c | 5088 | static void |
1eab8a48 | 5089 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5090 | { |
7a292a7a | 5091 | if (remote_debug) |
0f71a2f6 | 5092 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5093 | |
74531fed PA |
5094 | if (non_stop) |
5095 | remote_stop_ns (ptid); | |
c906108c | 5096 | else |
74531fed | 5097 | remote_stop_as (ptid); |
c906108c SS |
5098 | } |
5099 | ||
5100 | /* Ask the user what to do when an interrupt is received. */ | |
5101 | ||
5102 | static void | |
fba45db2 | 5103 | interrupt_query (void) |
c906108c SS |
5104 | { |
5105 | target_terminal_ours (); | |
5106 | ||
74531fed | 5107 | if (target_can_async_p ()) |
c906108c | 5108 | { |
74531fed | 5109 | signal (SIGINT, handle_sigint); |
039e3c22 | 5110 | quit (); |
c906108c | 5111 | } |
74531fed PA |
5112 | else |
5113 | { | |
9e2f0ad4 HZ |
5114 | if (query (_("Interrupted while waiting for the program.\n\ |
5115 | Give up (and stop debugging it)? "))) | |
74531fed | 5116 | { |
78a095c3 | 5117 | remote_unpush_target (); |
039e3c22 | 5118 | quit (); |
74531fed PA |
5119 | } |
5120 | } | |
c906108c SS |
5121 | |
5122 | target_terminal_inferior (); | |
5123 | } | |
5124 | ||
6426a772 JM |
5125 | /* Enable/disable target terminal ownership. Most targets can use |
5126 | terminal groups to control terminal ownership. Remote targets are | |
5127 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5128 | is required. */ |
6426a772 JM |
5129 | |
5130 | static void | |
d2f640d4 | 5131 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5132 | { |
c6ebd6cf | 5133 | if (!target_async_permitted) |
75c99385 PA |
5134 | /* Nothing to do. */ |
5135 | return; | |
5136 | ||
d9d2d8b6 PA |
5137 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5138 | idempotent. The event-loop GDB talking to an asynchronous target | |
5139 | with a synchronous command calls this function from both | |
5140 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5141 | transfer the terminal to the target when it shouldn't this guard | |
5142 | can go away. */ | |
6426a772 JM |
5143 | if (!remote_async_terminal_ours_p) |
5144 | return; | |
5145 | delete_file_handler (input_fd); | |
5146 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5147 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5148 | /* NOTE: At this point we could also register our selves as the |
5149 | recipient of all input. Any characters typed could then be | |
23860348 | 5150 | passed on down to the target. */ |
6426a772 JM |
5151 | } |
5152 | ||
5153 | static void | |
e3594fd1 | 5154 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5155 | { |
c6ebd6cf | 5156 | if (!target_async_permitted) |
75c99385 PA |
5157 | /* Nothing to do. */ |
5158 | return; | |
5159 | ||
5160 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5161 | if (remote_async_terminal_ours_p) |
5162 | return; | |
934b9bac | 5163 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5164 | add_file_handler (input_fd, stdin_event_handler, 0); |
5165 | remote_async_terminal_ours_p = 1; | |
5166 | } | |
5167 | ||
176a6961 | 5168 | static void |
917317f4 | 5169 | remote_console_output (char *msg) |
c906108c SS |
5170 | { |
5171 | char *p; | |
5172 | ||
c5aa993b | 5173 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5174 | { |
5175 | char tb[2]; | |
5176 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5177 | |
c906108c SS |
5178 | tb[0] = c; |
5179 | tb[1] = 0; | |
43ff13b4 | 5180 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5181 | } |
00db5b94 PA |
5182 | gdb_flush (gdb_stdtarg); |
5183 | } | |
74531fed PA |
5184 | |
5185 | typedef struct cached_reg | |
5186 | { | |
5187 | int num; | |
5188 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5189 | } cached_reg_t; | |
5190 | ||
5191 | DEF_VEC_O(cached_reg_t); | |
5192 | ||
722247f1 | 5193 | typedef struct stop_reply |
74531fed | 5194 | { |
722247f1 | 5195 | struct notif_event base; |
74531fed | 5196 | |
722247f1 | 5197 | /* The identifier of the thread about this event */ |
74531fed PA |
5198 | ptid_t ptid; |
5199 | ||
340e3c99 | 5200 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5201 | connection, represented by a remote_state object, is closed, |
5202 | all the associated stop_reply events should be released. */ | |
5203 | struct remote_state *rs; | |
5204 | ||
74531fed PA |
5205 | struct target_waitstatus ws; |
5206 | ||
15148d6a PA |
5207 | /* Expedited registers. This makes remote debugging a bit more |
5208 | efficient for those targets that provide critical registers as | |
5209 | part of their normal status mechanism (as another roundtrip to | |
5210 | fetch them is avoided). */ | |
74531fed PA |
5211 | VEC(cached_reg_t) *regcache; |
5212 | ||
5213 | int stopped_by_watchpoint_p; | |
5214 | CORE_ADDR watch_data_address; | |
5215 | ||
dc146f7c | 5216 | int core; |
722247f1 | 5217 | } *stop_reply_p; |
a744cf53 | 5218 | |
722247f1 YQ |
5219 | DECLARE_QUEUE_P (stop_reply_p); |
5220 | DEFINE_QUEUE_P (stop_reply_p); | |
5221 | /* The list of already fetched and acknowledged stop events. This | |
5222 | queue is used for notification Stop, and other notifications | |
5223 | don't need queue for their events, because the notification events | |
5224 | of Stop can't be consumed immediately, so that events should be | |
5225 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5226 | time. Other notifications can consume their events immediately, | |
5227 | so queue is not needed for them. */ | |
5228 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5229 | |
5230 | static void | |
5231 | stop_reply_xfree (struct stop_reply *r) | |
5232 | { | |
f48ff2a7 | 5233 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5234 | } |
5235 | ||
722247f1 YQ |
5236 | static void |
5237 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5238 | struct notif_event *event) | |
5239 | { | |
5240 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5241 | } | |
5242 | ||
5243 | static void | |
5244 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5245 | struct notif_event *event) | |
5246 | { | |
5247 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5248 | ||
5249 | /* acknowledge */ | |
5250 | putpkt ((char *) self->ack_command); | |
5251 | ||
5252 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5253 | /* We got an unknown stop reply. */ | |
5254 | error (_("Unknown stop reply")); | |
5255 | ||
5256 | push_stop_reply (stop_reply); | |
5257 | } | |
5258 | ||
5259 | static int | |
5260 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5261 | { | |
5262 | /* We can't get pending events in remote_notif_process for | |
5263 | notification stop, and we have to do this in remote_wait_ns | |
5264 | instead. If we fetch all queued events from stub, remote stub | |
5265 | may exit and we have no chance to process them back in | |
5266 | remote_wait_ns. */ | |
5267 | mark_async_event_handler (remote_async_inferior_event_token); | |
5268 | return 0; | |
5269 | } | |
5270 | ||
5271 | static void | |
5272 | stop_reply_dtr (struct notif_event *event) | |
5273 | { | |
5274 | struct stop_reply *r = (struct stop_reply *) event; | |
5275 | ||
5276 | VEC_free (cached_reg_t, r->regcache); | |
5277 | } | |
5278 | ||
5279 | static struct notif_event * | |
5280 | remote_notif_stop_alloc_reply (void) | |
5281 | { | |
5282 | struct notif_event *r | |
70ba0933 | 5283 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5284 | |
5285 | r->dtr = stop_reply_dtr; | |
5286 | ||
5287 | return r; | |
5288 | } | |
5289 | ||
5290 | /* A client of notification Stop. */ | |
5291 | ||
5292 | struct notif_client notif_client_stop = | |
5293 | { | |
5294 | "Stop", | |
5295 | "vStopped", | |
5296 | remote_notif_stop_parse, | |
5297 | remote_notif_stop_ack, | |
5298 | remote_notif_stop_can_get_pending_events, | |
5299 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5300 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5301 | }; |
5302 | ||
5303 | /* A parameter to pass data in and out. */ | |
5304 | ||
5305 | struct queue_iter_param | |
5306 | { | |
5307 | void *input; | |
5308 | struct stop_reply *output; | |
5309 | }; | |
5310 | ||
f48ff2a7 YQ |
5311 | /* Remove stop replies in the queue if its pid is equal to the given |
5312 | inferior's pid. */ | |
722247f1 YQ |
5313 | |
5314 | static int | |
f48ff2a7 YQ |
5315 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5316 | QUEUE_ITER (stop_reply_p) *iter, | |
5317 | stop_reply_p event, | |
5318 | void *data) | |
722247f1 YQ |
5319 | { |
5320 | struct queue_iter_param *param = data; | |
5321 | struct inferior *inf = param->input; | |
5322 | ||
f48ff2a7 | 5323 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5324 | { |
5325 | stop_reply_xfree (event); | |
5326 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5327 | } | |
5328 | ||
5329 | return 1; | |
5330 | } | |
5331 | ||
f48ff2a7 | 5332 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5333 | |
74531fed | 5334 | static void |
5f4cf0bb | 5335 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5336 | { |
722247f1 YQ |
5337 | int i; |
5338 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5339 | struct stop_reply *reply; |
5340 | struct remote_state *rs = get_remote_state (); | |
5341 | struct remote_notif_state *rns = rs->notif_state; | |
5342 | ||
5343 | /* This function can be notified when an inferior exists. When the | |
5344 | target is not remote, the notification state is NULL. */ | |
5345 | if (rs->remote_desc == NULL) | |
5346 | return; | |
5347 | ||
5348 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5349 | |
74531fed | 5350 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5351 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5352 | { |
722247f1 | 5353 | stop_reply_xfree (reply); |
f48ff2a7 | 5354 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5355 | } |
c906108c | 5356 | |
722247f1 YQ |
5357 | param.input = inf; |
5358 | param.output = NULL; | |
74531fed PA |
5359 | /* Discard the stop replies we have already pulled with |
5360 | vStopped. */ | |
722247f1 | 5361 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5362 | remove_stop_reply_for_inferior, ¶m); |
5363 | } | |
5364 | ||
bcc75809 YQ |
5365 | /* If its remote state is equal to the given remote state, |
5366 | remove EVENT from the stop reply queue. */ | |
5367 | ||
5368 | static int | |
5369 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5370 | QUEUE_ITER (stop_reply_p) *iter, | |
5371 | stop_reply_p event, | |
5372 | void *data) | |
5373 | { | |
5374 | struct queue_iter_param *param = data; | |
5375 | struct remote_state *rs = param->input; | |
5376 | ||
5377 | if (event->rs == rs) | |
5378 | { | |
5379 | stop_reply_xfree (event); | |
5380 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5381 | } | |
5382 | ||
5383 | return 1; | |
5384 | } | |
5385 | ||
5386 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5387 | |
5388 | static void | |
bcc75809 | 5389 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5390 | { |
5391 | struct queue_iter_param param; | |
5392 | ||
bcc75809 | 5393 | param.input = rs; |
f48ff2a7 YQ |
5394 | param.output = NULL; |
5395 | /* Discard the stop replies we have already pulled with | |
5396 | vStopped. */ | |
5397 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5398 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5399 | } |
74531fed | 5400 | |
722247f1 YQ |
5401 | /* A parameter to pass data in and out. */ |
5402 | ||
5403 | static int | |
5404 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5405 | QUEUE_ITER (stop_reply_p) *iter, | |
5406 | stop_reply_p event, | |
5407 | void *data) | |
5408 | { | |
5409 | struct queue_iter_param *param = data; | |
5410 | ptid_t *ptid = param->input; | |
5411 | ||
5412 | if (ptid_match (event->ptid, *ptid)) | |
5413 | { | |
5414 | param->output = event; | |
5415 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5416 | return 0; | |
c8e38a49 | 5417 | } |
722247f1 YQ |
5418 | |
5419 | return 1; | |
74531fed | 5420 | } |
43ff13b4 | 5421 | |
722247f1 YQ |
5422 | /* Remove the first reply in 'stop_reply_queue' which matches |
5423 | PTID. */ | |
2e9f7625 | 5424 | |
722247f1 YQ |
5425 | static struct stop_reply * |
5426 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5427 | { |
722247f1 YQ |
5428 | struct queue_iter_param param; |
5429 | ||
5430 | param.input = &ptid; | |
5431 | param.output = NULL; | |
5432 | ||
5433 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5434 | remote_notif_remove_once_on_match, ¶m); | |
5435 | if (notif_debug) | |
5436 | fprintf_unfiltered (gdb_stdlog, | |
5437 | "notif: discard queued event: 'Stop' in %s\n", | |
5438 | target_pid_to_str (ptid)); | |
a744cf53 | 5439 | |
722247f1 | 5440 | return param.output; |
74531fed | 5441 | } |
75c99385 | 5442 | |
74531fed PA |
5443 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5444 | remove it from the queue, and return it. Returns NULL if none is | |
5445 | found. If there are still queued events left to process, tell the | |
5446 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5447 | |
74531fed PA |
5448 | static struct stop_reply * |
5449 | queued_stop_reply (ptid_t ptid) | |
5450 | { | |
722247f1 | 5451 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5452 | |
722247f1 | 5453 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5454 | /* There's still at least an event left. */ |
5455 | mark_async_event_handler (remote_async_inferior_event_token); | |
5456 | ||
722247f1 | 5457 | return r; |
74531fed PA |
5458 | } |
5459 | ||
5460 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5461 | know that we now have at least one queued event left to pass to the | |
5462 | core side, tell the event loop to get back to target_wait soon. */ | |
5463 | ||
5464 | static void | |
5465 | push_stop_reply (struct stop_reply *new_event) | |
5466 | { | |
722247f1 | 5467 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5468 | |
722247f1 YQ |
5469 | if (notif_debug) |
5470 | fprintf_unfiltered (gdb_stdlog, | |
5471 | "notif: push 'Stop' %s to queue %d\n", | |
5472 | target_pid_to_str (new_event->ptid), | |
5473 | QUEUE_length (stop_reply_p, | |
5474 | stop_reply_queue)); | |
74531fed PA |
5475 | |
5476 | mark_async_event_handler (remote_async_inferior_event_token); | |
5477 | } | |
5478 | ||
722247f1 YQ |
5479 | static int |
5480 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5481 | QUEUE_ITER (stop_reply_p) *iter, | |
5482 | struct stop_reply *event, | |
5483 | void *data) | |
5484 | { | |
5485 | ptid_t *ptid = data; | |
5486 | ||
5487 | return !(ptid_equal (*ptid, event->ptid) | |
5488 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5489 | } | |
5490 | ||
74531fed PA |
5491 | /* Returns true if we have a stop reply for PTID. */ |
5492 | ||
5493 | static int | |
5494 | peek_stop_reply (ptid_t ptid) | |
5495 | { | |
722247f1 YQ |
5496 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5497 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5498 | } |
5499 | ||
5500 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5501 | result is stored in EVENT, or throws an error. */ | |
5502 | ||
5503 | static void | |
5504 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5505 | { | |
5506 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5507 | ULONGEST addr; | |
5508 | char *p; | |
5509 | ||
5510 | event->ptid = null_ptid; | |
bcc75809 | 5511 | event->rs = get_remote_state (); |
74531fed PA |
5512 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5513 | event->ws.value.integer = 0; | |
74531fed PA |
5514 | event->stopped_by_watchpoint_p = 0; |
5515 | event->regcache = NULL; | |
dc146f7c | 5516 | event->core = -1; |
74531fed PA |
5517 | |
5518 | switch (buf[0]) | |
5519 | { | |
5520 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5521 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5522 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5523 | ss = signal number | |
5524 | n... = register number | |
5525 | r... = register contents | |
5526 | */ | |
5527 | ||
5528 | p = &buf[3]; /* after Txx */ | |
5529 | while (*p) | |
5530 | { | |
5531 | char *p1; | |
5532 | char *p_temp; | |
5533 | int fieldsize; | |
5534 | LONGEST pnum = 0; | |
43ff13b4 | 5535 | |
cea39f65 MS |
5536 | /* If the packet contains a register number, save it in |
5537 | pnum and set p1 to point to the character following it. | |
5538 | Otherwise p1 points to p. */ | |
3c3bea1c | 5539 | |
cea39f65 MS |
5540 | /* If this packet is an awatch packet, don't parse the 'a' |
5541 | as a register number. */ | |
c8e38a49 | 5542 | |
dc146f7c VP |
5543 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5544 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5545 | { |
5546 | /* Read the ``P'' register number. */ | |
5547 | pnum = strtol (p, &p_temp, 16); | |
5548 | p1 = p_temp; | |
5549 | } | |
5550 | else | |
5551 | p1 = p; | |
802188a7 | 5552 | |
cea39f65 MS |
5553 | if (p1 == p) /* No register number present here. */ |
5554 | { | |
5555 | p1 = strchr (p, ':'); | |
5556 | if (p1 == NULL) | |
5557 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5558 | Packet: '%s'\n"), |
cea39f65 MS |
5559 | p, buf); |
5560 | if (strncmp (p, "thread", p1 - p) == 0) | |
5561 | event->ptid = read_ptid (++p1, &p); | |
5562 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5563 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5564 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5565 | { | |
5566 | event->stopped_by_watchpoint_p = 1; | |
5567 | p = unpack_varlen_hex (++p1, &addr); | |
5568 | event->watch_data_address = (CORE_ADDR) addr; | |
5569 | } | |
5570 | else if (strncmp (p, "library", p1 - p) == 0) | |
5571 | { | |
5572 | p1++; | |
5573 | p_temp = p1; | |
5574 | while (*p_temp && *p_temp != ';') | |
5575 | p_temp++; | |
c8e38a49 | 5576 | |
5b5596ff | 5577 | event->ws.kind = TARGET_WAITKIND_LOADED; |
cea39f65 MS |
5578 | p = p_temp; |
5579 | } | |
5580 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5581 | { | |
5b5596ff PA |
5582 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; |
5583 | /* p1 will indicate "begin" or "end", but it makes | |
5584 | no difference for now, so ignore it. */ | |
cea39f65 MS |
5585 | p_temp = strchr (p1 + 1, ';'); |
5586 | if (p_temp) | |
c8e38a49 | 5587 | p = p_temp; |
cea39f65 | 5588 | } |
dc146f7c VP |
5589 | else if (strncmp (p, "core", p1 - p) == 0) |
5590 | { | |
5591 | ULONGEST c; | |
a744cf53 | 5592 | |
dc146f7c VP |
5593 | p = unpack_varlen_hex (++p1, &c); |
5594 | event->core = c; | |
5595 | } | |
cea39f65 MS |
5596 | else |
5597 | { | |
5598 | /* Silently skip unknown optional info. */ | |
5599 | p_temp = strchr (p1 + 1, ';'); | |
5600 | if (p_temp) | |
5601 | p = p_temp; | |
5602 | } | |
5603 | } | |
5604 | else | |
5605 | { | |
5606 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5607 | cached_reg_t cached_reg; | |
74531fed | 5608 | |
cea39f65 | 5609 | p = p1; |
75c99385 | 5610 | |
cea39f65 MS |
5611 | if (*p != ':') |
5612 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5613 | Packet: '%s'\n"), |
cea39f65 MS |
5614 | p, buf); |
5615 | ++p; | |
43ff13b4 | 5616 | |
cea39f65 MS |
5617 | if (reg == NULL) |
5618 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5619 | Packet: '%s'\n"), |
7c47795c | 5620 | hex_string (pnum), p, buf); |
c8e38a49 | 5621 | |
cea39f65 | 5622 | cached_reg.num = reg->regnum; |
4100683b | 5623 | |
cea39f65 | 5624 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5625 | register_size (target_gdbarch (), |
cea39f65 MS |
5626 | reg->regnum)); |
5627 | p += 2 * fieldsize; | |
f5656ead | 5628 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5629 | reg->regnum)) |
5630 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5631 | |
cea39f65 MS |
5632 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5633 | } | |
c8e38a49 | 5634 | |
cea39f65 MS |
5635 | if (*p != ';') |
5636 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5637 | buf, p); | |
5638 | ++p; | |
5639 | } | |
5b5596ff PA |
5640 | |
5641 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5642 | break; | |
5643 | ||
c8e38a49 PA |
5644 | /* fall through */ |
5645 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5646 | { |
5647 | int sig; | |
5648 | ||
5649 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5650 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5651 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5652 | event->ws.value.sig = (enum gdb_signal) sig; | |
5653 | else | |
5654 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5655 | } | |
c8e38a49 PA |
5656 | break; |
5657 | case 'W': /* Target exited. */ | |
5658 | case 'X': | |
5659 | { | |
5660 | char *p; | |
5661 | int pid; | |
5662 | ULONGEST value; | |
82f73884 | 5663 | |
c8e38a49 PA |
5664 | /* GDB used to accept only 2 hex chars here. Stubs should |
5665 | only send more if they detect GDB supports multi-process | |
5666 | support. */ | |
5667 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5668 | |
c8e38a49 PA |
5669 | if (buf[0] == 'W') |
5670 | { | |
5671 | /* The remote process exited. */ | |
74531fed PA |
5672 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5673 | event->ws.value.integer = value; | |
c8e38a49 PA |
5674 | } |
5675 | else | |
5676 | { | |
5677 | /* The remote process exited with a signal. */ | |
74531fed | 5678 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5679 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5680 | event->ws.value.sig = (enum gdb_signal) value; | |
5681 | else | |
5682 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5683 | } |
82f73884 | 5684 | |
c8e38a49 PA |
5685 | /* If no process is specified, assume inferior_ptid. */ |
5686 | pid = ptid_get_pid (inferior_ptid); | |
5687 | if (*p == '\0') | |
5688 | ; | |
5689 | else if (*p == ';') | |
5690 | { | |
5691 | p++; | |
5692 | ||
5693 | if (p == '\0') | |
82f73884 | 5694 | ; |
c8e38a49 PA |
5695 | else if (strncmp (p, |
5696 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5697 | { |
c8e38a49 | 5698 | ULONGEST upid; |
a744cf53 | 5699 | |
c8e38a49 PA |
5700 | p += sizeof ("process:") - 1; |
5701 | unpack_varlen_hex (p, &upid); | |
5702 | pid = upid; | |
82f73884 PA |
5703 | } |
5704 | else | |
5705 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5706 | } |
c8e38a49 PA |
5707 | else |
5708 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5709 | event->ptid = pid_to_ptid (pid); |
5710 | } | |
5711 | break; | |
5712 | } | |
5713 | ||
5714 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5715 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5716 | } | |
5717 | ||
722247f1 YQ |
5718 | /* When the stub wants to tell GDB about a new notification reply, it |
5719 | sends a notification (%Stop, for example). Those can come it at | |
5720 | any time, hence, we have to make sure that any pending | |
5721 | putpkt/getpkt sequence we're making is finished, before querying | |
5722 | the stub for more events with the corresponding ack command | |
5723 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5724 | immediately upon receiving the notification, something like this | |
5725 | could happen: | |
74531fed PA |
5726 | |
5727 | 1.1) --> Hg 1 | |
5728 | 1.2) <-- OK | |
5729 | 1.3) --> g | |
5730 | 1.4) <-- %Stop | |
5731 | 1.5) --> vStopped | |
5732 | 1.6) <-- (registers reply to step #1.3) | |
5733 | ||
5734 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5735 | query. | |
5736 | ||
796cb314 | 5737 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5738 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5739 | doing whatever we were doing: | |
5740 | ||
5741 | 2.1) --> Hg 1 | |
5742 | 2.2) <-- OK | |
5743 | 2.3) --> g | |
5744 | 2.4) <-- %Stop | |
5745 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5746 | 2.5) <-- (registers reply to step #2.3) | |
5747 | ||
5748 | Eventualy after step #2.5, we return to the event loop, which | |
5749 | notices there's an event on the | |
5750 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5751 | associated callback --- the function below. At this point, we're | |
5752 | always safe to start a vStopped sequence. : | |
5753 | ||
5754 | 2.6) --> vStopped | |
5755 | 2.7) <-- T05 thread:2 | |
5756 | 2.8) --> vStopped | |
5757 | 2.9) --> OK | |
5758 | */ | |
5759 | ||
722247f1 YQ |
5760 | void |
5761 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5762 | { |
5763 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5764 | |
f48ff2a7 | 5765 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5766 | { |
722247f1 YQ |
5767 | if (notif_debug) |
5768 | fprintf_unfiltered (gdb_stdlog, | |
5769 | "notif: process: '%s' ack pending event\n", | |
5770 | nc->name); | |
74531fed | 5771 | |
722247f1 | 5772 | /* acknowledge */ |
f48ff2a7 YQ |
5773 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5774 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5775 | |
5776 | while (1) | |
5777 | { | |
5778 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5779 | if (strcmp (rs->buf, "OK") == 0) | |
5780 | break; | |
5781 | else | |
722247f1 | 5782 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5783 | } |
5784 | } | |
722247f1 YQ |
5785 | else |
5786 | { | |
5787 | if (notif_debug) | |
5788 | fprintf_unfiltered (gdb_stdlog, | |
5789 | "notif: process: '%s' no pending reply\n", | |
5790 | nc->name); | |
5791 | } | |
74531fed PA |
5792 | } |
5793 | ||
74531fed PA |
5794 | /* Called when it is decided that STOP_REPLY holds the info of the |
5795 | event that is to be returned to the core. This function always | |
5796 | destroys STOP_REPLY. */ | |
5797 | ||
5798 | static ptid_t | |
5799 | process_stop_reply (struct stop_reply *stop_reply, | |
5800 | struct target_waitstatus *status) | |
5801 | { | |
5802 | ptid_t ptid; | |
5803 | ||
5804 | *status = stop_reply->ws; | |
5805 | ptid = stop_reply->ptid; | |
5806 | ||
5807 | /* If no thread/process was reported by the stub, assume the current | |
5808 | inferior. */ | |
5809 | if (ptid_equal (ptid, null_ptid)) | |
5810 | ptid = inferior_ptid; | |
5811 | ||
5f3563ea PA |
5812 | if (status->kind != TARGET_WAITKIND_EXITED |
5813 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5814 | { |
ee154bee TT |
5815 | struct remote_state *rs = get_remote_state (); |
5816 | ||
5f3563ea PA |
5817 | /* Expedited registers. */ |
5818 | if (stop_reply->regcache) | |
5819 | { | |
217f1f79 | 5820 | struct regcache *regcache |
f5656ead | 5821 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5822 | cached_reg_t *reg; |
5823 | int ix; | |
5824 | ||
5825 | for (ix = 0; | |
5826 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5827 | ix++) | |
217f1f79 | 5828 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5829 | VEC_free (cached_reg_t, stop_reply->regcache); |
5830 | } | |
74531fed | 5831 | |
ee154bee TT |
5832 | rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5833 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5834 | |
5835 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5836 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5837 | } |
5838 | ||
74531fed PA |
5839 | stop_reply_xfree (stop_reply); |
5840 | return ptid; | |
5841 | } | |
5842 | ||
5843 | /* The non-stop mode version of target_wait. */ | |
5844 | ||
5845 | static ptid_t | |
47608cb1 | 5846 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5847 | { |
5848 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5849 | struct stop_reply *stop_reply; |
5850 | int ret; | |
fee9eda9 | 5851 | int is_notif = 0; |
74531fed PA |
5852 | |
5853 | /* If in non-stop mode, get out of getpkt even if a | |
5854 | notification is received. */ | |
5855 | ||
5856 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5857 | 0 /* forever */, &is_notif); |
74531fed PA |
5858 | while (1) |
5859 | { | |
fee9eda9 | 5860 | if (ret != -1 && !is_notif) |
74531fed PA |
5861 | switch (rs->buf[0]) |
5862 | { | |
5863 | case 'E': /* Error of some sort. */ | |
5864 | /* We're out of sync with the target now. Did it continue | |
5865 | or not? We can't tell which thread it was in non-stop, | |
5866 | so just ignore this. */ | |
5867 | warning (_("Remote failure reply: %s"), rs->buf); | |
5868 | break; | |
5869 | case 'O': /* Console output. */ | |
5870 | remote_console_output (rs->buf + 1); | |
5871 | break; | |
5872 | default: | |
5873 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5874 | break; | |
5875 | } | |
5876 | ||
5877 | /* Acknowledge a pending stop reply that may have arrived in the | |
5878 | mean time. */ | |
f48ff2a7 | 5879 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 5880 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
5881 | |
5882 | /* If indeed we noticed a stop reply, we're done. */ | |
5883 | stop_reply = queued_stop_reply (ptid); | |
5884 | if (stop_reply != NULL) | |
5885 | return process_stop_reply (stop_reply, status); | |
5886 | ||
47608cb1 | 5887 | /* Still no event. If we're just polling for an event, then |
74531fed | 5888 | return to the event loop. */ |
47608cb1 | 5889 | if (options & TARGET_WNOHANG) |
74531fed PA |
5890 | { |
5891 | status->kind = TARGET_WAITKIND_IGNORE; | |
5892 | return minus_one_ptid; | |
5893 | } | |
5894 | ||
47608cb1 | 5895 | /* Otherwise do a blocking wait. */ |
74531fed | 5896 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5897 | 1 /* forever */, &is_notif); |
74531fed PA |
5898 | } |
5899 | } | |
5900 | ||
5901 | /* Wait until the remote machine stops, then return, storing status in | |
5902 | STATUS just as `wait' would. */ | |
5903 | ||
5904 | static ptid_t | |
47608cb1 | 5905 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5906 | { |
5907 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5908 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5909 | char *buf; |
74531fed PA |
5910 | struct stop_reply *stop_reply; |
5911 | ||
47608cb1 PA |
5912 | again: |
5913 | ||
74531fed PA |
5914 | status->kind = TARGET_WAITKIND_IGNORE; |
5915 | status->value.integer = 0; | |
5916 | ||
5917 | stop_reply = queued_stop_reply (ptid); | |
5918 | if (stop_reply != NULL) | |
5919 | return process_stop_reply (stop_reply, status); | |
5920 | ||
5921 | if (rs->cached_wait_status) | |
5922 | /* Use the cached wait status, but only once. */ | |
5923 | rs->cached_wait_status = 0; | |
5924 | else | |
5925 | { | |
5926 | int ret; | |
722247f1 | 5927 | int is_notif; |
74531fed PA |
5928 | |
5929 | if (!target_is_async_p ()) | |
5930 | { | |
934b9bac | 5931 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
5932 | /* If the user hit C-c before this packet, or between packets, |
5933 | pretend that it was hit right here. */ | |
522002f9 | 5934 | if (check_quit_flag ()) |
74531fed | 5935 | { |
522002f9 | 5936 | clear_quit_flag (); |
934b9bac | 5937 | sync_remote_interrupt (SIGINT); |
74531fed PA |
5938 | } |
5939 | } | |
5940 | ||
5941 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5942 | _never_ wait for ever -> test on target_is_async_p(). | |
5943 | However, before we do that we need to ensure that the caller | |
5944 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
5945 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5946 | wait_forever_enabled_p, &is_notif); | |
5947 | ||
5e1b953b SDJ |
5948 | if (!target_is_async_p ()) |
5949 | signal (SIGINT, ofunc); | |
5950 | ||
722247f1 YQ |
5951 | /* GDB gets a notification. Return to core as this event is |
5952 | not interesting. */ | |
5953 | if (ret != -1 && is_notif) | |
5954 | return minus_one_ptid; | |
74531fed PA |
5955 | } |
5956 | ||
5957 | buf = rs->buf; | |
5958 | ||
ee154bee | 5959 | rs->remote_stopped_by_watchpoint_p = 0; |
74531fed PA |
5960 | |
5961 | /* We got something. */ | |
5962 | rs->waiting_for_stop_reply = 0; | |
5963 | ||
3a29589a DJ |
5964 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5965 | an 'F' or 'O' packet. */ | |
5966 | if (buf[0] != 'F' && buf[0] != 'O') | |
5967 | rs->ctrlc_pending_p = 0; | |
5968 | ||
74531fed PA |
5969 | switch (buf[0]) |
5970 | { | |
5971 | case 'E': /* Error of some sort. */ | |
5972 | /* We're out of sync with the target now. Did it continue or | |
5973 | not? Not is more likely, so report a stop. */ | |
5974 | warning (_("Remote failure reply: %s"), buf); | |
5975 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 5976 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
5977 | break; |
5978 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5979 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5980 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5981 | break; |
5982 | case 'T': case 'S': case 'X': case 'W': | |
5983 | { | |
722247f1 YQ |
5984 | struct stop_reply *stop_reply |
5985 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
5986 | rs->buf); | |
74531fed | 5987 | |
74531fed | 5988 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
5989 | break; |
5990 | } | |
5991 | case 'O': /* Console output. */ | |
5992 | remote_console_output (buf + 1); | |
e24a49d8 | 5993 | |
c8e38a49 PA |
5994 | /* The target didn't really stop; keep waiting. */ |
5995 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5996 | |
c8e38a49 PA |
5997 | break; |
5998 | case '\0': | |
b73be471 | 5999 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6000 | { |
6001 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6002 | remote system doesn't support it. */ | |
6003 | target_terminal_ours_for_output (); | |
6004 | printf_filtered | |
6005 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6006 | gdb_signal_to_name (rs->last_sent_signal)); |
6007 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6008 | target_terminal_inferior (); |
6009 | ||
280ceea3 | 6010 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6011 | putpkt ((char *) buf); |
6012 | ||
6013 | /* We just told the target to resume, so a stop reply is in | |
6014 | order. */ | |
e24a49d8 | 6015 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6016 | break; |
43ff13b4 | 6017 | } |
c8e38a49 PA |
6018 | /* else fallthrough */ |
6019 | default: | |
6020 | warning (_("Invalid remote reply: %s"), buf); | |
6021 | /* Keep waiting. */ | |
6022 | rs->waiting_for_stop_reply = 1; | |
6023 | break; | |
43ff13b4 | 6024 | } |
c8e38a49 | 6025 | |
c8e38a49 | 6026 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6027 | { |
6028 | /* Nothing interesting happened. If we're doing a non-blocking | |
6029 | poll, we're done. Otherwise, go back to waiting. */ | |
6030 | if (options & TARGET_WNOHANG) | |
6031 | return minus_one_ptid; | |
6032 | else | |
6033 | goto again; | |
6034 | } | |
74531fed PA |
6035 | else if (status->kind != TARGET_WAITKIND_EXITED |
6036 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6037 | { |
6038 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6039 | record_currthread (rs, event_ptid); |
82f73884 PA |
6040 | else |
6041 | event_ptid = inferior_ptid; | |
43ff13b4 | 6042 | } |
74531fed PA |
6043 | else |
6044 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6045 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6046 | |
82f73884 | 6047 | return event_ptid; |
43ff13b4 JM |
6048 | } |
6049 | ||
74531fed PA |
6050 | /* Wait until the remote machine stops, then return, storing status in |
6051 | STATUS just as `wait' would. */ | |
6052 | ||
c8e38a49 | 6053 | static ptid_t |
117de6a9 | 6054 | remote_wait (struct target_ops *ops, |
47608cb1 | 6055 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6056 | { |
6057 | ptid_t event_ptid; | |
6058 | ||
74531fed | 6059 | if (non_stop) |
47608cb1 | 6060 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6061 | else |
47608cb1 | 6062 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6063 | |
74531fed | 6064 | if (target_can_async_p ()) |
c8e38a49 | 6065 | { |
74531fed PA |
6066 | /* If there are are events left in the queue tell the event loop |
6067 | to return here. */ | |
722247f1 | 6068 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6069 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6070 | } |
c8e38a49 PA |
6071 | |
6072 | return event_ptid; | |
6073 | } | |
6074 | ||
74ca34ce | 6075 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6076 | |
b96ec7ac | 6077 | static int |
56be3814 | 6078 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6079 | { |
6080 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6081 | char *buf, *p; |
b96ec7ac AC |
6082 | char regp[MAX_REGISTER_SIZE]; |
6083 | int i; | |
6084 | ||
74ca34ce DJ |
6085 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
6086 | return 0; | |
6087 | ||
6088 | if (reg->pnum == -1) | |
6089 | return 0; | |
6090 | ||
2e9f7625 | 6091 | p = rs->buf; |
fcad0fa4 | 6092 | *p++ = 'p'; |
74ca34ce | 6093 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6094 | *p++ = '\0'; |
1f4437a4 MS |
6095 | putpkt (rs->buf); |
6096 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6097 | |
2e9f7625 DJ |
6098 | buf = rs->buf; |
6099 | ||
74ca34ce DJ |
6100 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6101 | { | |
6102 | case PACKET_OK: | |
6103 | break; | |
6104 | case PACKET_UNKNOWN: | |
6105 | return 0; | |
6106 | case PACKET_ERROR: | |
27a9c0bf MS |
6107 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6108 | gdbarch_register_name (get_regcache_arch (regcache), | |
6109 | reg->regnum), | |
6110 | buf); | |
74ca34ce | 6111 | } |
3f9a994c JB |
6112 | |
6113 | /* If this register is unfetchable, tell the regcache. */ | |
6114 | if (buf[0] == 'x') | |
8480adf2 | 6115 | { |
56be3814 | 6116 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6117 | return 1; |
b96ec7ac | 6118 | } |
b96ec7ac | 6119 | |
3f9a994c JB |
6120 | /* Otherwise, parse and supply the value. */ |
6121 | p = buf; | |
6122 | i = 0; | |
6123 | while (p[0] != 0) | |
6124 | { | |
6125 | if (p[1] == 0) | |
74ca34ce | 6126 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6127 | |
6128 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6129 | p += 2; | |
6130 | } | |
56be3814 | 6131 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6132 | return 1; |
b96ec7ac AC |
6133 | } |
6134 | ||
74ca34ce DJ |
6135 | /* Fetch the registers included in the target's 'g' packet. */ |
6136 | ||
29709017 DJ |
6137 | static int |
6138 | send_g_packet (void) | |
c906108c | 6139 | { |
d01949b6 | 6140 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6141 | int buf_len; |
c906108c | 6142 | |
bba74b36 | 6143 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6144 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6145 | |
29709017 DJ |
6146 | /* We can get out of synch in various cases. If the first character |
6147 | in the buffer is not a hex character, assume that has happened | |
6148 | and try to fetch another packet to read. */ | |
6149 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6150 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6151 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6152 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6153 | { | |
6154 | if (remote_debug) | |
6155 | fprintf_unfiltered (gdb_stdlog, | |
6156 | "Bad register packet; fetching a new packet\n"); | |
6157 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6158 | } | |
6159 | ||
74ca34ce DJ |
6160 | buf_len = strlen (rs->buf); |
6161 | ||
6162 | /* Sanity check the received packet. */ | |
6163 | if (buf_len % 2 != 0) | |
6164 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6165 | |
6166 | return buf_len / 2; | |
6167 | } | |
6168 | ||
6169 | static void | |
56be3814 | 6170 | process_g_packet (struct regcache *regcache) |
29709017 | 6171 | { |
4a22f64d | 6172 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6173 | struct remote_state *rs = get_remote_state (); |
6174 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6175 | int i, buf_len; | |
6176 | char *p; | |
6177 | char *regs; | |
6178 | ||
6179 | buf_len = strlen (rs->buf); | |
6180 | ||
6181 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6182 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6183 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6184 | ||
6185 | /* Save the size of the packet sent to us by the target. It is used | |
6186 | as a heuristic when determining the max size of packets that the | |
6187 | target can safely receive. */ | |
6188 | if (rsa->actual_register_packet_size == 0) | |
6189 | rsa->actual_register_packet_size = buf_len; | |
6190 | ||
6191 | /* If this is smaller than we guessed the 'g' packet would be, | |
6192 | update our records. A 'g' reply that doesn't include a register's | |
6193 | value implies either that the register is not available, or that | |
6194 | the 'p' packet must be used. */ | |
6195 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6196 | { |
74ca34ce DJ |
6197 | rsa->sizeof_g_packet = buf_len / 2; |
6198 | ||
4a22f64d | 6199 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6200 | { |
74ca34ce DJ |
6201 | if (rsa->regs[i].pnum == -1) |
6202 | continue; | |
6203 | ||
6204 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6205 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6206 | else |
74ca34ce | 6207 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6208 | } |
74ca34ce | 6209 | } |
b323314b | 6210 | |
74ca34ce | 6211 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6212 | |
6213 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6214 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6215 | |
c906108c SS |
6216 | /* Reply describes registers byte by byte, each byte encoded as two |
6217 | hex characters. Suck them all up, then supply them to the | |
6218 | register cacheing/storage mechanism. */ | |
6219 | ||
74ca34ce | 6220 | p = rs->buf; |
ea9c271d | 6221 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6222 | { |
74ca34ce DJ |
6223 | if (p[0] == 0 || p[1] == 0) |
6224 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6225 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6226 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6227 | |
c906108c | 6228 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6229 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6230 | else |
6231 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6232 | p += 2; | |
6233 | } | |
6234 | ||
a744cf53 MS |
6235 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6236 | { | |
6237 | struct packet_reg *r = &rsa->regs[i]; | |
6238 | ||
6239 | if (r->in_g_packet) | |
6240 | { | |
6241 | if (r->offset * 2 >= strlen (rs->buf)) | |
6242 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6243 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6244 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6245 | else if (rs->buf[r->offset * 2] == 'x') |
6246 | { | |
6247 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6248 | /* The register isn't available, mark it as such (at | |
6249 | the same time setting the value to zero). */ | |
6250 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6251 | } | |
6252 | else | |
6253 | regcache_raw_supply (regcache, r->regnum, | |
6254 | regs + r->offset); | |
6255 | } | |
6256 | } | |
c906108c SS |
6257 | } |
6258 | ||
29709017 | 6259 | static void |
56be3814 | 6260 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6261 | { |
6262 | send_g_packet (); | |
56be3814 | 6263 | process_g_packet (regcache); |
29709017 DJ |
6264 | } |
6265 | ||
e6e4e701 PA |
6266 | /* Make the remote selected traceframe match GDB's selected |
6267 | traceframe. */ | |
6268 | ||
6269 | static void | |
6270 | set_remote_traceframe (void) | |
6271 | { | |
6272 | int newnum; | |
262e1174 | 6273 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6274 | |
262e1174 | 6275 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6276 | return; |
6277 | ||
6278 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6279 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6280 | |
6281 | newnum = target_trace_find (tfind_number, | |
6282 | get_traceframe_number (), 0, 0, NULL); | |
6283 | ||
6284 | /* Should not happen. If it does, all bets are off. */ | |
6285 | if (newnum != get_traceframe_number ()) | |
6286 | warning (_("could not set remote traceframe")); | |
6287 | } | |
6288 | ||
74ca34ce | 6289 | static void |
28439f5e PA |
6290 | remote_fetch_registers (struct target_ops *ops, |
6291 | struct regcache *regcache, int regnum) | |
74ca34ce | 6292 | { |
74ca34ce DJ |
6293 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6294 | int i; | |
6295 | ||
e6e4e701 | 6296 | set_remote_traceframe (); |
79d7f229 | 6297 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6298 | |
6299 | if (regnum >= 0) | |
6300 | { | |
6301 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6302 | |
74ca34ce DJ |
6303 | gdb_assert (reg != NULL); |
6304 | ||
6305 | /* If this register might be in the 'g' packet, try that first - | |
6306 | we are likely to read more than one register. If this is the | |
6307 | first 'g' packet, we might be overly optimistic about its | |
6308 | contents, so fall back to 'p'. */ | |
6309 | if (reg->in_g_packet) | |
6310 | { | |
56be3814 | 6311 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6312 | if (reg->in_g_packet) |
6313 | return; | |
6314 | } | |
6315 | ||
56be3814 | 6316 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6317 | return; |
6318 | ||
6319 | /* This register is not available. */ | |
56be3814 | 6320 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6321 | |
6322 | return; | |
6323 | } | |
6324 | ||
56be3814 | 6325 | fetch_registers_using_g (regcache); |
74ca34ce | 6326 | |
4a22f64d | 6327 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6328 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6329 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6330 | { |
6331 | /* This register is not available. */ | |
56be3814 | 6332 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6333 | } |
6334 | } | |
6335 | ||
c906108c SS |
6336 | /* Prepare to store registers. Since we may send them all (using a |
6337 | 'G' request), we have to read out the ones we don't want to change | |
6338 | first. */ | |
6339 | ||
c5aa993b | 6340 | static void |
f32dbf8c | 6341 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6342 | { |
ea9c271d | 6343 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6344 | int i; |
cfd77fa1 | 6345 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6346 | |
c906108c | 6347 | /* Make sure the entire registers array is valid. */ |
444abaca | 6348 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6349 | { |
6350 | case PACKET_DISABLE: | |
6351 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6352 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6353 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6354 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6355 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6356 | break; |
6357 | case PACKET_ENABLE: | |
6358 | break; | |
6359 | } | |
6360 | } | |
6361 | ||
ad10f812 | 6362 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6363 | packet was not recognized. */ |
5a2468f5 JM |
6364 | |
6365 | static int | |
1f4437a4 MS |
6366 | store_register_using_P (const struct regcache *regcache, |
6367 | struct packet_reg *reg) | |
5a2468f5 | 6368 | { |
4a22f64d | 6369 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6370 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6371 | /* Try storing a single register. */ |
6d820c5c | 6372 | char *buf = rs->buf; |
cfd77fa1 | 6373 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6374 | char *p; |
5a2468f5 | 6375 | |
74ca34ce DJ |
6376 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6377 | return 0; | |
6378 | ||
6379 | if (reg->pnum == -1) | |
6380 | return 0; | |
6381 | ||
ea9c271d | 6382 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6383 | p = buf + strlen (buf); |
56be3814 | 6384 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6385 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6386 | putpkt (rs->buf); |
6387 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6388 | |
74ca34ce DJ |
6389 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6390 | { | |
6391 | case PACKET_OK: | |
6392 | return 1; | |
6393 | case PACKET_ERROR: | |
27a9c0bf MS |
6394 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6395 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6396 | case PACKET_UNKNOWN: |
6397 | return 0; | |
6398 | default: | |
6399 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6400 | } | |
c906108c SS |
6401 | } |
6402 | ||
23860348 MS |
6403 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6404 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6405 | |
6406 | static void | |
56be3814 | 6407 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6408 | { |
d01949b6 | 6409 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6410 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6411 | gdb_byte *regs; |
c906108c SS |
6412 | char *p; |
6413 | ||
193cb69f AC |
6414 | /* Extract all the registers in the regcache copying them into a |
6415 | local buffer. */ | |
6416 | { | |
b323314b | 6417 | int i; |
a744cf53 | 6418 | |
ea9c271d DJ |
6419 | regs = alloca (rsa->sizeof_g_packet); |
6420 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6421 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6422 | { |
ea9c271d | 6423 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6424 | |
b323314b | 6425 | if (r->in_g_packet) |
56be3814 | 6426 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6427 | } |
6428 | } | |
c906108c SS |
6429 | |
6430 | /* Command describes registers byte by byte, | |
6431 | each byte encoded as two hex characters. */ | |
6d820c5c | 6432 | p = rs->buf; |
193cb69f | 6433 | *p++ = 'G'; |
74ca34ce DJ |
6434 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6435 | updated. */ | |
6436 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6437 | putpkt (rs->buf); |
6438 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6439 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6440 | error (_("Could not write registers; remote failure reply '%s'"), |
6441 | rs->buf); | |
c906108c | 6442 | } |
74ca34ce DJ |
6443 | |
6444 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6445 | of the register cache buffer. FIXME: ignores errors. */ | |
6446 | ||
6447 | static void | |
28439f5e PA |
6448 | remote_store_registers (struct target_ops *ops, |
6449 | struct regcache *regcache, int regnum) | |
74ca34ce | 6450 | { |
74ca34ce DJ |
6451 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6452 | int i; | |
6453 | ||
e6e4e701 | 6454 | set_remote_traceframe (); |
79d7f229 | 6455 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6456 | |
6457 | if (regnum >= 0) | |
6458 | { | |
6459 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6460 | |
74ca34ce DJ |
6461 | gdb_assert (reg != NULL); |
6462 | ||
6463 | /* Always prefer to store registers using the 'P' packet if | |
6464 | possible; we often change only a small number of registers. | |
6465 | Sometimes we change a larger number; we'd need help from a | |
6466 | higher layer to know to use 'G'. */ | |
56be3814 | 6467 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6468 | return; |
6469 | ||
6470 | /* For now, don't complain if we have no way to write the | |
6471 | register. GDB loses track of unavailable registers too | |
6472 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6473 | any way to read the register, either... */ |
74ca34ce DJ |
6474 | if (!reg->in_g_packet) |
6475 | return; | |
6476 | ||
56be3814 | 6477 | store_registers_using_G (regcache); |
74ca34ce DJ |
6478 | return; |
6479 | } | |
6480 | ||
56be3814 | 6481 | store_registers_using_G (regcache); |
74ca34ce | 6482 | |
4a22f64d | 6483 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6484 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6485 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6486 | /* See above for why we do not issue an error here. */ |
6487 | continue; | |
6488 | } | |
c906108c SS |
6489 | \f |
6490 | ||
6491 | /* Return the number of hex digits in num. */ | |
6492 | ||
6493 | static int | |
fba45db2 | 6494 | hexnumlen (ULONGEST num) |
c906108c SS |
6495 | { |
6496 | int i; | |
6497 | ||
6498 | for (i = 0; num != 0; i++) | |
6499 | num >>= 4; | |
6500 | ||
6501 | return max (i, 1); | |
6502 | } | |
6503 | ||
2df3850c | 6504 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6505 | |
6506 | static int | |
fba45db2 | 6507 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6508 | { |
c906108c | 6509 | int len = hexnumlen (num); |
a744cf53 | 6510 | |
2df3850c JM |
6511 | return hexnumnstr (buf, num, len); |
6512 | } | |
6513 | ||
c906108c | 6514 | |
2df3850c | 6515 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6516 | |
2df3850c | 6517 | static int |
fba45db2 | 6518 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6519 | { |
6520 | int i; | |
6521 | ||
6522 | buf[width] = '\0'; | |
6523 | ||
6524 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6525 | { |
c5aa993b | 6526 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6527 | num >>= 4; |
6528 | } | |
6529 | ||
2df3850c | 6530 | return width; |
c906108c SS |
6531 | } |
6532 | ||
23860348 | 6533 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6534 | |
6535 | static CORE_ADDR | |
fba45db2 | 6536 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6537 | { |
883b9c6c | 6538 | unsigned int address_size = remote_address_size; |
a744cf53 | 6539 | |
911c95a5 UW |
6540 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6541 | if (!address_size) | |
f5656ead | 6542 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6543 | |
6544 | if (address_size > 0 | |
6545 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6546 | { |
6547 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6548 | in a ULONGEST variable. */ |
c906108c | 6549 | ULONGEST mask = 1; |
a744cf53 | 6550 | |
911c95a5 | 6551 | mask = (mask << address_size) - 1; |
c906108c SS |
6552 | addr &= mask; |
6553 | } | |
6554 | return addr; | |
6555 | } | |
6556 | ||
6557 | /* Determine whether the remote target supports binary downloading. | |
6558 | This is accomplished by sending a no-op memory write of zero length | |
6559 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6560 | the whole packet, since many stubs strip the eighth bit and |
6561 | subsequently compute a wrong checksum, which causes real havoc with | |
6562 | remote_write_bytes. | |
7a292a7a | 6563 | |
96baa820 | 6564 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6565 | clean. In cases like this, the user should clear "remote |
23860348 | 6566 | X-packet". */ |
96baa820 | 6567 | |
c906108c | 6568 | static void |
fba45db2 | 6569 | check_binary_download (CORE_ADDR addr) |
c906108c | 6570 | { |
d01949b6 | 6571 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6572 | |
444abaca | 6573 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6574 | { |
96baa820 JM |
6575 | case PACKET_DISABLE: |
6576 | break; | |
6577 | case PACKET_ENABLE: | |
6578 | break; | |
6579 | case PACKET_SUPPORT_UNKNOWN: | |
6580 | { | |
96baa820 | 6581 | char *p; |
802188a7 | 6582 | |
2e9f7625 | 6583 | p = rs->buf; |
96baa820 JM |
6584 | *p++ = 'X'; |
6585 | p += hexnumstr (p, (ULONGEST) addr); | |
6586 | *p++ = ','; | |
6587 | p += hexnumstr (p, (ULONGEST) 0); | |
6588 | *p++ = ':'; | |
6589 | *p = '\0'; | |
802188a7 | 6590 | |
2e9f7625 | 6591 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6592 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6593 | |
2e9f7625 | 6594 | if (rs->buf[0] == '\0') |
96baa820 JM |
6595 | { |
6596 | if (remote_debug) | |
6597 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6598 | "binary downloading NOT " |
6599 | "supported by target\n"); | |
444abaca | 6600 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6601 | } |
6602 | else | |
6603 | { | |
6604 | if (remote_debug) | |
6605 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6606 | "binary downloading supported by target\n"); |
444abaca | 6607 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6608 | } |
6609 | break; | |
6610 | } | |
c906108c SS |
6611 | } |
6612 | } | |
6613 | ||
6614 | /* Write memory data directly to the remote machine. | |
6615 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6616 | HEADER is the starting part of the packet. |
c906108c SS |
6617 | MEMADDR is the address in the remote memory space. |
6618 | MYADDR is the address of the buffer in our space. | |
6619 | LEN is the number of bytes. | |
a76d924d DJ |
6620 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6621 | should send data as binary ('X'), or hex-encoded ('M'). | |
6622 | ||
6623 | The function creates packet of the form | |
6624 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6625 | ||
6626 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6627 | ||
6628 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6629 | are omitted. | |
6630 | ||
9b409511 YQ |
6631 | Return the transferred status, error or OK (an |
6632 | 'enum target_xfer_status' value). Save the number of bytes | |
6633 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
c906108c | 6634 | |
9b409511 | 6635 | static enum target_xfer_status |
a76d924d | 6636 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
5d6df423 | 6637 | const gdb_byte *myaddr, ULONGEST len, |
9b409511 YQ |
6638 | ULONGEST *xfered_len, char packet_format, |
6639 | int use_length) | |
c906108c | 6640 | { |
6d820c5c | 6641 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6642 | char *p; |
a76d924d DJ |
6643 | char *plen = NULL; |
6644 | int plenlen = 0; | |
917317f4 JM |
6645 | int todo; |
6646 | int nr_bytes; | |
a257b5bb | 6647 | int payload_size; |
6765f3e5 | 6648 | int payload_length; |
a76d924d DJ |
6649 | int header_length; |
6650 | ||
6651 | if (packet_format != 'X' && packet_format != 'M') | |
6652 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6653 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6654 | |
5d6df423 | 6655 | if (len == 0) |
9b409511 | 6656 | return TARGET_XFER_EOF; |
b2182ed2 | 6657 | |
3de11b2e | 6658 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6659 | |
6d820c5c DJ |
6660 | /* The packet buffer will be large enough for the payload; |
6661 | get_memory_packet_size ensures this. */ | |
a76d924d | 6662 | rs->buf[0] = '\0'; |
c906108c | 6663 | |
a257b5bb | 6664 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6665 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6666 | ||
a76d924d DJ |
6667 | payload_size -= strlen ("$,:#NN"); |
6668 | if (!use_length) | |
0df8b418 | 6669 | /* The comma won't be used. */ |
a76d924d DJ |
6670 | payload_size += 1; |
6671 | header_length = strlen (header); | |
6672 | payload_size -= header_length; | |
3de11b2e | 6673 | payload_size -= hexnumlen (memaddr); |
c906108c | 6674 | |
a76d924d | 6675 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6676 | |
a76d924d DJ |
6677 | strcat (rs->buf, header); |
6678 | p = rs->buf + strlen (header); | |
6679 | ||
6680 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6681 | if (packet_format == 'X') | |
c906108c | 6682 | { |
23860348 | 6683 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6684 | todo = min (len, payload_size); |
a76d924d DJ |
6685 | if (use_length) |
6686 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6687 | todo = min (todo, payload_size); |
a76d924d DJ |
6688 | } |
6689 | else | |
6690 | { | |
23860348 | 6691 | /* Num bytes that will fit. */ |
a257b5bb | 6692 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6693 | if (use_length) |
6694 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6695 | todo = min (todo, payload_size / 2); |
917317f4 | 6696 | } |
a76d924d | 6697 | |
3de11b2e NS |
6698 | if (todo <= 0) |
6699 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6700 | _("minimum packet size too small to write data")); |
802188a7 | 6701 | |
6765f3e5 DJ |
6702 | /* If we already need another packet, then try to align the end |
6703 | of this packet to a useful boundary. */ | |
6704 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6705 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6706 | ||
a257b5bb | 6707 | /* Append "<memaddr>". */ |
917317f4 JM |
6708 | memaddr = remote_address_masked (memaddr); |
6709 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6710 | |
a76d924d DJ |
6711 | if (use_length) |
6712 | { | |
6713 | /* Append ",". */ | |
6714 | *p++ = ','; | |
802188a7 | 6715 | |
a76d924d DJ |
6716 | /* Append <len>. Retain the location/size of <len>. It may need to |
6717 | be adjusted once the packet body has been created. */ | |
6718 | plen = p; | |
6719 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6720 | p += plenlen; | |
6721 | } | |
a257b5bb AC |
6722 | |
6723 | /* Append ":". */ | |
917317f4 JM |
6724 | *p++ = ':'; |
6725 | *p = '\0'; | |
802188a7 | 6726 | |
a257b5bb | 6727 | /* Append the packet body. */ |
a76d924d | 6728 | if (packet_format == 'X') |
917317f4 | 6729 | { |
917317f4 JM |
6730 | /* Binary mode. Send target system values byte by byte, in |
6731 | increasing byte addresses. Only escape certain critical | |
6732 | characters. */ | |
bc20a4af PA |
6733 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6734 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6735 | |
6736 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6737 | a second try to keep the end of the packet aligned. Don't do |
6738 | this if the packet is tiny. */ | |
6739 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6740 | { |
6741 | int new_nr_bytes; | |
6742 | ||
6743 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6744 | - memaddr); | |
6745 | if (new_nr_bytes != nr_bytes) | |
6746 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6747 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6748 | payload_size); |
6749 | } | |
6750 | ||
6751 | p += payload_length; | |
a76d924d | 6752 | if (use_length && nr_bytes < todo) |
c906108c | 6753 | { |
802188a7 | 6754 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6755 | and we have actually sent fewer bytes than planned. |
6756 | Fix-up the length field of the packet. Use the same | |
6757 | number of characters as before. */ | |
917317f4 JM |
6758 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6759 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6760 | } |
a76d924d DJ |
6761 | } |
6762 | else | |
6763 | { | |
917317f4 JM |
6764 | /* Normal mode: Send target system values byte by byte, in |
6765 | increasing byte addresses. Each byte is encoded as a two hex | |
6766 | value. */ | |
2644f393 | 6767 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6768 | p += 2 * nr_bytes; |
c906108c | 6769 | } |
802188a7 | 6770 | |
2e9f7625 | 6771 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6772 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6773 | |
2e9f7625 | 6774 | if (rs->buf[0] == 'E') |
00d84524 | 6775 | return TARGET_XFER_E_IO; |
802188a7 | 6776 | |
23860348 MS |
6777 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6778 | fewer bytes than we'd planned. */ | |
9b409511 YQ |
6779 | *xfered_len = (ULONGEST) nr_bytes; |
6780 | return TARGET_XFER_OK; | |
c906108c SS |
6781 | } |
6782 | ||
a76d924d DJ |
6783 | /* Write memory data directly to the remote machine. |
6784 | This does not inform the data cache; the data cache uses this. | |
6785 | MEMADDR is the address in the remote memory space. | |
6786 | MYADDR is the address of the buffer in our space. | |
6787 | LEN is the number of bytes. | |
6788 | ||
9b409511 YQ |
6789 | Return the transferred status, error or OK (an |
6790 | 'enum target_xfer_status' value). Save the number of bytes | |
6791 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 6792 | |
9b409511 YQ |
6793 | static enum target_xfer_status |
6794 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
6795 | ULONGEST *xfered_len) | |
a76d924d DJ |
6796 | { |
6797 | char *packet_format = 0; | |
6798 | ||
6799 | /* Check whether the target supports binary download. */ | |
6800 | check_binary_download (memaddr); | |
6801 | ||
6802 | switch (remote_protocol_packets[PACKET_X].support) | |
6803 | { | |
6804 | case PACKET_ENABLE: | |
6805 | packet_format = "X"; | |
6806 | break; | |
6807 | case PACKET_DISABLE: | |
6808 | packet_format = "M"; | |
6809 | break; | |
6810 | case PACKET_SUPPORT_UNKNOWN: | |
6811 | internal_error (__FILE__, __LINE__, | |
6812 | _("remote_write_bytes: bad internal state")); | |
6813 | default: | |
6814 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6815 | } | |
6816 | ||
6817 | return remote_write_bytes_aux (packet_format, | |
9b409511 YQ |
6818 | memaddr, myaddr, len, xfered_len, |
6819 | packet_format[0], 1); | |
a76d924d DJ |
6820 | } |
6821 | ||
c906108c SS |
6822 | /* Read memory data directly from the remote machine. |
6823 | This does not use the data cache; the data cache uses this. | |
6824 | MEMADDR is the address in the remote memory space. | |
6825 | MYADDR is the address of the buffer in our space. | |
6826 | LEN is the number of bytes. | |
6827 | ||
9b409511 YQ |
6828 | Return the transferred status, error or OK (an |
6829 | 'enum target_xfer_status' value). Save the number of bytes | |
6830 | transferred in *XFERED_LEN. */ | |
c906108c | 6831 | |
9b409511 YQ |
6832 | static enum target_xfer_status |
6833 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len, | |
6834 | ULONGEST *xfered_len) | |
c906108c | 6835 | { |
6d820c5c | 6836 | struct remote_state *rs = get_remote_state (); |
23860348 | 6837 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6838 | char *p; |
6839 | int todo; | |
6840 | int i; | |
c906108c | 6841 | |
6b6aa828 | 6842 | if (len == 0) |
b2182ed2 DJ |
6843 | return 0; |
6844 | ||
11cf8741 | 6845 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6846 | /* The packet buffer will be large enough for the payload; |
6847 | get_memory_packet_size ensures this. */ | |
c906108c | 6848 | |
f7605bc2 PA |
6849 | /* Number if bytes that will fit. */ |
6850 | todo = min (len, max_buf_size / 2); | |
c906108c | 6851 | |
f7605bc2 PA |
6852 | /* Construct "m"<memaddr>","<len>". */ |
6853 | memaddr = remote_address_masked (memaddr); | |
6854 | p = rs->buf; | |
6855 | *p++ = 'm'; | |
6856 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6857 | *p++ = ','; | |
6858 | p += hexnumstr (p, (ULONGEST) todo); | |
6859 | *p = '\0'; | |
6860 | putpkt (rs->buf); | |
6861 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6862 | if (rs->buf[0] == 'E' | |
6863 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6864 | && rs->buf[3] == '\0') | |
00d84524 | 6865 | return TARGET_XFER_E_IO; |
f7605bc2 PA |
6866 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6867 | characters. */ | |
6868 | p = rs->buf; | |
6869 | i = hex2bin (p, myaddr, todo); | |
6870 | /* Return what we have. Let higher layers handle partial reads. */ | |
9b409511 YQ |
6871 | *xfered_len = (ULONGEST) i; |
6872 | return TARGET_XFER_OK; | |
c906108c | 6873 | } |
74531fed | 6874 | |
c906108c | 6875 | \f |
c906108c | 6876 | |
a76d924d DJ |
6877 | /* Sends a packet with content determined by the printf format string |
6878 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6879 | whether the packet was a success, a failure, or unknown. */ | |
6880 | ||
2c0b251b | 6881 | static enum packet_result |
a76d924d DJ |
6882 | remote_send_printf (const char *format, ...) |
6883 | { | |
6884 | struct remote_state *rs = get_remote_state (); | |
6885 | int max_size = get_remote_packet_size (); | |
a76d924d | 6886 | va_list ap; |
a744cf53 | 6887 | |
a76d924d DJ |
6888 | va_start (ap, format); |
6889 | ||
6890 | rs->buf[0] = '\0'; | |
6891 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6892 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6893 | |
6894 | if (putpkt (rs->buf) < 0) | |
6895 | error (_("Communication problem with target.")); | |
6896 | ||
6897 | rs->buf[0] = '\0'; | |
6898 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6899 | ||
6900 | return packet_check_result (rs->buf); | |
6901 | } | |
6902 | ||
6903 | static void | |
6904 | restore_remote_timeout (void *p) | |
6905 | { | |
6906 | int value = *(int *)p; | |
a744cf53 | 6907 | |
a76d924d DJ |
6908 | remote_timeout = value; |
6909 | } | |
6910 | ||
6911 | /* Flash writing can take quite some time. We'll set | |
6912 | effectively infinite timeout for flash operations. | |
6913 | In future, we'll need to decide on a better approach. */ | |
6914 | static const int remote_flash_timeout = 1000; | |
6915 | ||
6916 | static void | |
6917 | remote_flash_erase (struct target_ops *ops, | |
6918 | ULONGEST address, LONGEST length) | |
6919 | { | |
f5656ead | 6920 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
6921 | int saved_remote_timeout = remote_timeout; |
6922 | enum packet_result ret; | |
a76d924d DJ |
6923 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6924 | &saved_remote_timeout); | |
a744cf53 | 6925 | |
a76d924d DJ |
6926 | remote_timeout = remote_flash_timeout; |
6927 | ||
6928 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6929 | phex (address, addr_size), |
a76d924d DJ |
6930 | phex (length, 4)); |
6931 | switch (ret) | |
6932 | { | |
6933 | case PACKET_UNKNOWN: | |
6934 | error (_("Remote target does not support flash erase")); | |
6935 | case PACKET_ERROR: | |
6936 | error (_("Error erasing flash with vFlashErase packet")); | |
6937 | default: | |
6938 | break; | |
6939 | } | |
6940 | ||
6941 | do_cleanups (back_to); | |
6942 | } | |
6943 | ||
9b409511 YQ |
6944 | static enum target_xfer_status |
6945 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
6946 | ULONGEST length, ULONGEST *xfered_len, | |
6947 | const gdb_byte *data) | |
a76d924d DJ |
6948 | { |
6949 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 6950 | enum target_xfer_status ret; |
a76d924d | 6951 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 6952 | &saved_remote_timeout); |
a76d924d DJ |
6953 | |
6954 | remote_timeout = remote_flash_timeout; | |
9b409511 YQ |
6955 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, |
6956 | xfered_len,'X', 0); | |
a76d924d DJ |
6957 | do_cleanups (back_to); |
6958 | ||
6959 | return ret; | |
6960 | } | |
6961 | ||
6962 | static void | |
6963 | remote_flash_done (struct target_ops *ops) | |
6964 | { | |
6965 | int saved_remote_timeout = remote_timeout; | |
6966 | int ret; | |
6967 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6968 | &saved_remote_timeout); | |
6969 | ||
6970 | remote_timeout = remote_flash_timeout; | |
6971 | ret = remote_send_printf ("vFlashDone"); | |
6972 | do_cleanups (back_to); | |
6973 | ||
6974 | switch (ret) | |
6975 | { | |
6976 | case PACKET_UNKNOWN: | |
6977 | error (_("Remote target does not support vFlashDone")); | |
6978 | case PACKET_ERROR: | |
6979 | error (_("Error finishing flash operation")); | |
6980 | default: | |
6981 | break; | |
6982 | } | |
6983 | } | |
6984 | ||
c906108c | 6985 | static void |
fba45db2 | 6986 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6987 | { |
6988 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6989 | } | |
6990 | \f | |
6991 | /* Stuff for dealing with the packets which are part of this protocol. | |
6992 | See comment at top of file for details. */ | |
6993 | ||
1927e618 PA |
6994 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
6995 | error to higher layers. Called when a serial error is detected. | |
6996 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
6997 | the system error message for errno at function entry and final dot |
6998 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
6999 | |
7000 | static void | |
7001 | unpush_and_perror (const char *string) | |
7002 | { | |
d6cb50a2 | 7003 | int saved_errno = errno; |
1927e618 PA |
7004 | |
7005 | remote_unpush_target (); | |
d6cb50a2 JK |
7006 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7007 | safe_strerror (saved_errno)); | |
1927e618 PA |
7008 | } |
7009 | ||
0876f84a | 7010 | /* Read a single character from the remote end. */ |
c906108c SS |
7011 | |
7012 | static int | |
fba45db2 | 7013 | readchar (int timeout) |
c906108c SS |
7014 | { |
7015 | int ch; | |
5d93a237 | 7016 | struct remote_state *rs = get_remote_state (); |
c906108c | 7017 | |
5d93a237 | 7018 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7019 | |
2acceee2 | 7020 | if (ch >= 0) |
0876f84a | 7021 | return ch; |
2acceee2 JM |
7022 | |
7023 | switch ((enum serial_rc) ch) | |
c906108c SS |
7024 | { |
7025 | case SERIAL_EOF: | |
78a095c3 | 7026 | remote_unpush_target (); |
598d3636 | 7027 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7028 | /* no return */ |
c906108c | 7029 | case SERIAL_ERROR: |
1927e618 PA |
7030 | unpush_and_perror (_("Remote communication error. " |
7031 | "Target disconnected.")); | |
2acceee2 | 7032 | /* no return */ |
c906108c | 7033 | case SERIAL_TIMEOUT: |
2acceee2 | 7034 | break; |
c906108c | 7035 | } |
2acceee2 | 7036 | return ch; |
c906108c SS |
7037 | } |
7038 | ||
c33e31fd PA |
7039 | /* Wrapper for serial_write that closes the target and throws if |
7040 | writing fails. */ | |
7041 | ||
7042 | static void | |
7043 | remote_serial_write (const char *str, int len) | |
7044 | { | |
5d93a237 TT |
7045 | struct remote_state *rs = get_remote_state (); |
7046 | ||
7047 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7048 | { |
1927e618 PA |
7049 | unpush_and_perror (_("Remote communication error. " |
7050 | "Target disconnected.")); | |
c33e31fd PA |
7051 | } |
7052 | } | |
7053 | ||
6d820c5c DJ |
7054 | /* Send the command in *BUF to the remote machine, and read the reply |
7055 | into *BUF. Report an error if we get an error reply. Resize | |
7056 | *BUF using xrealloc if necessary to hold the result, and update | |
7057 | *SIZEOF_BUF. */ | |
c906108c SS |
7058 | |
7059 | static void | |
6d820c5c DJ |
7060 | remote_send (char **buf, |
7061 | long *sizeof_buf) | |
c906108c | 7062 | { |
6d820c5c | 7063 | putpkt (*buf); |
c2d11a7d | 7064 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7065 | |
6d820c5c DJ |
7066 | if ((*buf)[0] == 'E') |
7067 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7068 | } |
7069 | ||
6e5abd65 PA |
7070 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7071 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7072 | etc. The caller is responsible for releasing the returned | |
7073 | memory. */ | |
7074 | ||
7075 | static char * | |
7076 | escape_buffer (const char *buf, int n) | |
7077 | { | |
7078 | struct cleanup *old_chain; | |
7079 | struct ui_file *stb; | |
7080 | char *str; | |
6e5abd65 PA |
7081 | |
7082 | stb = mem_fileopen (); | |
7083 | old_chain = make_cleanup_ui_file_delete (stb); | |
7084 | ||
7085 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7086 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7087 | do_cleanups (old_chain); |
7088 | return str; | |
7089 | } | |
7090 | ||
c906108c SS |
7091 | /* Display a null-terminated packet on stdout, for debugging, using C |
7092 | string notation. */ | |
7093 | ||
7094 | static void | |
fba45db2 | 7095 | print_packet (char *buf) |
c906108c SS |
7096 | { |
7097 | puts_filtered ("\""); | |
43e526b9 | 7098 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7099 | puts_filtered ("\""); |
7100 | } | |
7101 | ||
7102 | int | |
fba45db2 | 7103 | putpkt (char *buf) |
c906108c SS |
7104 | { |
7105 | return putpkt_binary (buf, strlen (buf)); | |
7106 | } | |
7107 | ||
7108 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7109 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7110 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7111 | and for a possible /0 if we are debugging (remote_debug) and want |
7112 | to print the sent packet as a string. */ | |
c906108c SS |
7113 | |
7114 | static int | |
fba45db2 | 7115 | putpkt_binary (char *buf, int cnt) |
c906108c | 7116 | { |
2d717e4f | 7117 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7118 | int i; |
7119 | unsigned char csum = 0; | |
11cf8741 | 7120 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7121 | |
c906108c SS |
7122 | int ch; |
7123 | int tcount = 0; | |
7124 | char *p; | |
dd61ec5c | 7125 | char *message; |
c906108c | 7126 | |
e24a49d8 PA |
7127 | /* Catch cases like trying to read memory or listing threads while |
7128 | we're waiting for a stop reply. The remote server wouldn't be | |
7129 | ready to handle this request, so we'd hang and timeout. We don't | |
7130 | have to worry about this in synchronous mode, because in that | |
7131 | case it's not possible to issue a command while the target is | |
74531fed PA |
7132 | running. This is not a problem in non-stop mode, because in that |
7133 | case, the stub is always ready to process serial input. */ | |
7134 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7135 | error (_("Cannot execute this command while the target is running.")); |
7136 | ||
2d717e4f DJ |
7137 | /* We're sending out a new packet. Make sure we don't look at a |
7138 | stale cached response. */ | |
7139 | rs->cached_wait_status = 0; | |
7140 | ||
c906108c SS |
7141 | /* Copy the packet into buffer BUF2, encapsulating it |
7142 | and giving it a checksum. */ | |
7143 | ||
c906108c SS |
7144 | p = buf2; |
7145 | *p++ = '$'; | |
7146 | ||
7147 | for (i = 0; i < cnt; i++) | |
7148 | { | |
7149 | csum += buf[i]; | |
7150 | *p++ = buf[i]; | |
7151 | } | |
7152 | *p++ = '#'; | |
7153 | *p++ = tohex ((csum >> 4) & 0xf); | |
7154 | *p++ = tohex (csum & 0xf); | |
7155 | ||
7156 | /* Send it over and over until we get a positive ack. */ | |
7157 | ||
7158 | while (1) | |
7159 | { | |
7160 | int started_error_output = 0; | |
7161 | ||
7162 | if (remote_debug) | |
7163 | { | |
6e5abd65 PA |
7164 | struct cleanup *old_chain; |
7165 | char *str; | |
7166 | ||
c906108c | 7167 | *p = '\0'; |
6e5abd65 PA |
7168 | str = escape_buffer (buf2, p - buf2); |
7169 | old_chain = make_cleanup (xfree, str); | |
7170 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7171 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7172 | do_cleanups (old_chain); |
c906108c | 7173 | } |
c33e31fd | 7174 | remote_serial_write (buf2, p - buf2); |
c906108c | 7175 | |
a6f3e723 SL |
7176 | /* If this is a no acks version of the remote protocol, send the |
7177 | packet and move on. */ | |
7178 | if (rs->noack_mode) | |
7179 | break; | |
7180 | ||
74531fed PA |
7181 | /* Read until either a timeout occurs (-2) or '+' is read. |
7182 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7183 | while (1) |
7184 | { | |
7185 | ch = readchar (remote_timeout); | |
7186 | ||
c5aa993b | 7187 | if (remote_debug) |
c906108c SS |
7188 | { |
7189 | switch (ch) | |
7190 | { | |
7191 | case '+': | |
1216fa2c | 7192 | case '-': |
c906108c SS |
7193 | case SERIAL_TIMEOUT: |
7194 | case '$': | |
74531fed | 7195 | case '%': |
c906108c SS |
7196 | if (started_error_output) |
7197 | { | |
7198 | putchar_unfiltered ('\n'); | |
7199 | started_error_output = 0; | |
7200 | } | |
7201 | } | |
7202 | } | |
7203 | ||
7204 | switch (ch) | |
7205 | { | |
7206 | case '+': | |
7207 | if (remote_debug) | |
0f71a2f6 | 7208 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7209 | return 1; |
1216fa2c AC |
7210 | case '-': |
7211 | if (remote_debug) | |
7212 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7213 | /* FALLTHROUGH */ |
c906108c | 7214 | case SERIAL_TIMEOUT: |
c5aa993b | 7215 | tcount++; |
c906108c SS |
7216 | if (tcount > 3) |
7217 | return 0; | |
23860348 | 7218 | break; /* Retransmit buffer. */ |
c906108c SS |
7219 | case '$': |
7220 | { | |
40e3f985 | 7221 | if (remote_debug) |
2bc416ba | 7222 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7223 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7224 | /* It's probably an old response sent because an ACK |
7225 | was lost. Gobble up the packet and ack it so it | |
7226 | doesn't get retransmitted when we resend this | |
7227 | packet. */ | |
6d820c5c | 7228 | skip_frame (); |
c33e31fd | 7229 | remote_serial_write ("+", 1); |
23860348 | 7230 | continue; /* Now, go look for +. */ |
c906108c | 7231 | } |
74531fed PA |
7232 | |
7233 | case '%': | |
7234 | { | |
7235 | int val; | |
7236 | ||
7237 | /* If we got a notification, handle it, and go back to looking | |
7238 | for an ack. */ | |
7239 | /* We've found the start of a notification. Now | |
7240 | collect the data. */ | |
7241 | val = read_frame (&rs->buf, &rs->buf_size); | |
7242 | if (val >= 0) | |
7243 | { | |
7244 | if (remote_debug) | |
7245 | { | |
6e5abd65 PA |
7246 | struct cleanup *old_chain; |
7247 | char *str; | |
7248 | ||
7249 | str = escape_buffer (rs->buf, val); | |
7250 | old_chain = make_cleanup (xfree, str); | |
7251 | fprintf_unfiltered (gdb_stdlog, | |
7252 | " Notification received: %s\n", | |
7253 | str); | |
7254 | do_cleanups (old_chain); | |
74531fed | 7255 | } |
5965e028 | 7256 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7257 | /* We're in sync now, rewait for the ack. */ |
7258 | tcount = 0; | |
7259 | } | |
7260 | else | |
7261 | { | |
7262 | if (remote_debug) | |
7263 | { | |
7264 | if (!started_error_output) | |
7265 | { | |
7266 | started_error_output = 1; | |
7267 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7268 | } | |
7269 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7270 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7271 | } | |
7272 | } | |
7273 | continue; | |
7274 | } | |
7275 | /* fall-through */ | |
c906108c SS |
7276 | default: |
7277 | if (remote_debug) | |
7278 | { | |
7279 | if (!started_error_output) | |
7280 | { | |
7281 | started_error_output = 1; | |
0f71a2f6 | 7282 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7283 | } |
0f71a2f6 | 7284 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7285 | } |
7286 | continue; | |
7287 | } | |
23860348 | 7288 | break; /* Here to retransmit. */ |
c906108c SS |
7289 | } |
7290 | ||
7291 | #if 0 | |
7292 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7293 | able to get out next time we call QUIT, without anything as |
7294 | violent as interrupt_query. If we want to provide a way out of | |
7295 | here without getting to the next QUIT, it should be based on | |
7296 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7297 | if (quit_flag) |
7298 | { | |
7299 | quit_flag = 0; | |
7300 | interrupt_query (); | |
7301 | } | |
7302 | #endif | |
7303 | } | |
a6f3e723 | 7304 | return 0; |
c906108c SS |
7305 | } |
7306 | ||
6d820c5c DJ |
7307 | /* Come here after finding the start of a frame when we expected an |
7308 | ack. Do our best to discard the rest of this packet. */ | |
7309 | ||
7310 | static void | |
7311 | skip_frame (void) | |
7312 | { | |
7313 | int c; | |
7314 | ||
7315 | while (1) | |
7316 | { | |
7317 | c = readchar (remote_timeout); | |
7318 | switch (c) | |
7319 | { | |
7320 | case SERIAL_TIMEOUT: | |
7321 | /* Nothing we can do. */ | |
7322 | return; | |
7323 | case '#': | |
7324 | /* Discard the two bytes of checksum and stop. */ | |
7325 | c = readchar (remote_timeout); | |
7326 | if (c >= 0) | |
7327 | c = readchar (remote_timeout); | |
7328 | ||
7329 | return; | |
7330 | case '*': /* Run length encoding. */ | |
7331 | /* Discard the repeat count. */ | |
7332 | c = readchar (remote_timeout); | |
7333 | if (c < 0) | |
7334 | return; | |
7335 | break; | |
7336 | default: | |
7337 | /* A regular character. */ | |
7338 | break; | |
7339 | } | |
7340 | } | |
7341 | } | |
7342 | ||
c906108c | 7343 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7344 | into *BUF, verifying the checksum, length, and handling run-length |
7345 | compression. NUL terminate the buffer. If there is not enough room, | |
7346 | expand *BUF using xrealloc. | |
c906108c | 7347 | |
c2d11a7d JM |
7348 | Returns -1 on error, number of characters in buffer (ignoring the |
7349 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7350 | SERIAL status indications). */ |
c2d11a7d JM |
7351 | |
7352 | static long | |
6d820c5c DJ |
7353 | read_frame (char **buf_p, |
7354 | long *sizeof_buf) | |
c906108c SS |
7355 | { |
7356 | unsigned char csum; | |
c2d11a7d | 7357 | long bc; |
c906108c | 7358 | int c; |
6d820c5c | 7359 | char *buf = *buf_p; |
a6f3e723 | 7360 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7361 | |
7362 | csum = 0; | |
c2d11a7d | 7363 | bc = 0; |
c906108c SS |
7364 | |
7365 | while (1) | |
7366 | { | |
7367 | c = readchar (remote_timeout); | |
c906108c SS |
7368 | switch (c) |
7369 | { | |
7370 | case SERIAL_TIMEOUT: | |
7371 | if (remote_debug) | |
0f71a2f6 | 7372 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7373 | return -1; |
c906108c SS |
7374 | case '$': |
7375 | if (remote_debug) | |
0f71a2f6 JM |
7376 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7377 | gdb_stdlog); | |
23860348 | 7378 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7379 | case '#': |
7380 | { | |
7381 | unsigned char pktcsum; | |
e1b09194 AC |
7382 | int check_0 = 0; |
7383 | int check_1 = 0; | |
c906108c | 7384 | |
c2d11a7d | 7385 | buf[bc] = '\0'; |
c906108c | 7386 | |
e1b09194 AC |
7387 | check_0 = readchar (remote_timeout); |
7388 | if (check_0 >= 0) | |
7389 | check_1 = readchar (remote_timeout); | |
802188a7 | 7390 | |
e1b09194 AC |
7391 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7392 | { | |
7393 | if (remote_debug) | |
2bc416ba | 7394 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7395 | gdb_stdlog); |
e1b09194 AC |
7396 | return -1; |
7397 | } | |
7398 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7399 | { |
7400 | if (remote_debug) | |
2bc416ba | 7401 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7402 | gdb_stdlog); |
40e3f985 FN |
7403 | return -1; |
7404 | } | |
c906108c | 7405 | |
a6f3e723 SL |
7406 | /* Don't recompute the checksum; with no ack packets we |
7407 | don't have any way to indicate a packet retransmission | |
7408 | is necessary. */ | |
7409 | if (rs->noack_mode) | |
7410 | return bc; | |
7411 | ||
e1b09194 | 7412 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7413 | if (csum == pktcsum) |
c2d11a7d | 7414 | return bc; |
c906108c | 7415 | |
c5aa993b | 7416 | if (remote_debug) |
c906108c | 7417 | { |
6e5abd65 PA |
7418 | struct cleanup *old_chain; |
7419 | char *str; | |
7420 | ||
7421 | str = escape_buffer (buf, bc); | |
7422 | old_chain = make_cleanup (xfree, str); | |
7423 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7424 | "Bad checksum, sentsum=0x%x, " |
7425 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7426 | pktcsum, csum, str); |
7427 | do_cleanups (old_chain); | |
c906108c | 7428 | } |
c2d11a7d | 7429 | /* Number of characters in buffer ignoring trailing |
23860348 | 7430 | NULL. */ |
c2d11a7d | 7431 | return -1; |
c906108c | 7432 | } |
23860348 | 7433 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7434 | { |
7435 | int repeat; | |
c906108c | 7436 | |
a744cf53 | 7437 | csum += c; |
b4501125 AC |
7438 | c = readchar (remote_timeout); |
7439 | csum += c; | |
23860348 | 7440 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7441 | |
23860348 | 7442 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7443 | |
6d820c5c | 7444 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7445 | { |
6d820c5c DJ |
7446 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7447 | { | |
7448 | /* Make some more room in the buffer. */ | |
7449 | *sizeof_buf += repeat; | |
7450 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7451 | buf = *buf_p; | |
7452 | } | |
7453 | ||
c2d11a7d JM |
7454 | memset (&buf[bc], buf[bc - 1], repeat); |
7455 | bc += repeat; | |
c2c6d25f JM |
7456 | continue; |
7457 | } | |
7458 | ||
c2d11a7d | 7459 | buf[bc] = '\0'; |
6d820c5c | 7460 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7461 | return -1; |
c2c6d25f | 7462 | } |
c906108c | 7463 | default: |
6d820c5c | 7464 | if (bc >= *sizeof_buf - 1) |
c906108c | 7465 | { |
6d820c5c DJ |
7466 | /* Make some more room in the buffer. */ |
7467 | *sizeof_buf *= 2; | |
7468 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7469 | buf = *buf_p; | |
c906108c SS |
7470 | } |
7471 | ||
6d820c5c DJ |
7472 | buf[bc++] = c; |
7473 | csum += c; | |
7474 | continue; | |
c906108c SS |
7475 | } |
7476 | } | |
7477 | } | |
7478 | ||
7479 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7480 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7481 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7482 | rather than timing out; this is used (in synchronous mode) to wait | |
7483 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7484 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7485 | don't have to change all the calls to getpkt to deal with the | |
7486 | return value, because at the moment I don't know what the right | |
23860348 | 7487 | thing to do it for those. */ |
c906108c | 7488 | void |
6d820c5c DJ |
7489 | getpkt (char **buf, |
7490 | long *sizeof_buf, | |
c2d11a7d | 7491 | int forever) |
d9fcf2fb JM |
7492 | { |
7493 | int timed_out; | |
7494 | ||
7495 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7496 | } | |
7497 | ||
7498 | ||
7499 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7500 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7501 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7502 | rather than timing out; this is used (in synchronous mode) to wait | |
7503 | for a target that is is executing user code to stop. If FOREVER == | |
7504 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7505 | indication of this to the caller. Otherwise return the number of |
7506 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7507 | enough reason to return to the caller. *IS_NOTIF is an output |
7508 | boolean that indicates whether *BUF holds a notification or not | |
7509 | (a regular packet). */ | |
74531fed | 7510 | |
3172dc30 | 7511 | static int |
74531fed | 7512 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7513 | int expecting_notif, int *is_notif) |
c906108c | 7514 | { |
2d717e4f | 7515 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7516 | int c; |
7517 | int tries; | |
7518 | int timeout; | |
df4b58fe | 7519 | int val = -1; |
c906108c | 7520 | |
2d717e4f DJ |
7521 | /* We're reading a new response. Make sure we don't look at a |
7522 | previously cached response. */ | |
7523 | rs->cached_wait_status = 0; | |
7524 | ||
6d820c5c | 7525 | strcpy (*buf, "timeout"); |
c906108c SS |
7526 | |
7527 | if (forever) | |
74531fed PA |
7528 | timeout = watchdog > 0 ? watchdog : -1; |
7529 | else if (expecting_notif) | |
7530 | timeout = 0; /* There should already be a char in the buffer. If | |
7531 | not, bail out. */ | |
c906108c SS |
7532 | else |
7533 | timeout = remote_timeout; | |
7534 | ||
7535 | #define MAX_TRIES 3 | |
7536 | ||
74531fed PA |
7537 | /* Process any number of notifications, and then return when |
7538 | we get a packet. */ | |
7539 | for (;;) | |
c906108c | 7540 | { |
d9c43928 | 7541 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7542 | times. */ |
7543 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7544 | { |
74531fed PA |
7545 | /* This can loop forever if the remote side sends us |
7546 | characters continuously, but if it pauses, we'll get | |
7547 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7548 | we'll count that as a retry. | |
7549 | ||
7550 | Note that even when forever is set, we will only wait | |
7551 | forever prior to the start of a packet. After that, we | |
7552 | expect characters to arrive at a brisk pace. They should | |
7553 | show up within remote_timeout intervals. */ | |
7554 | do | |
7555 | c = readchar (timeout); | |
7556 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7557 | |
7558 | if (c == SERIAL_TIMEOUT) | |
7559 | { | |
74531fed PA |
7560 | if (expecting_notif) |
7561 | return -1; /* Don't complain, it's normal to not get | |
7562 | anything in this case. */ | |
7563 | ||
23860348 | 7564 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7565 | { |
2acceee2 | 7566 | QUIT; |
78a095c3 | 7567 | remote_unpush_target (); |
598d3636 JK |
7568 | throw_error (TARGET_CLOSE_ERROR, |
7569 | _("Watchdog timeout has expired. " | |
7570 | "Target detached.")); | |
c906108c | 7571 | } |
c906108c | 7572 | if (remote_debug) |
0f71a2f6 | 7573 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7574 | } |
74531fed PA |
7575 | else |
7576 | { | |
7577 | /* We've found the start of a packet or notification. | |
7578 | Now collect the data. */ | |
7579 | val = read_frame (buf, sizeof_buf); | |
7580 | if (val >= 0) | |
7581 | break; | |
7582 | } | |
7583 | ||
c33e31fd | 7584 | remote_serial_write ("-", 1); |
c906108c | 7585 | } |
c906108c | 7586 | |
74531fed PA |
7587 | if (tries > MAX_TRIES) |
7588 | { | |
7589 | /* We have tried hard enough, and just can't receive the | |
7590 | packet/notification. Give up. */ | |
7591 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7592 | |
74531fed PA |
7593 | /* Skip the ack char if we're in no-ack mode. */ |
7594 | if (!rs->noack_mode) | |
c33e31fd | 7595 | remote_serial_write ("+", 1); |
74531fed PA |
7596 | return -1; |
7597 | } | |
c906108c | 7598 | |
74531fed PA |
7599 | /* If we got an ordinary packet, return that to our caller. */ |
7600 | if (c == '$') | |
c906108c SS |
7601 | { |
7602 | if (remote_debug) | |
43e526b9 | 7603 | { |
6e5abd65 PA |
7604 | struct cleanup *old_chain; |
7605 | char *str; | |
7606 | ||
7607 | str = escape_buffer (*buf, val); | |
7608 | old_chain = make_cleanup (xfree, str); | |
7609 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7610 | do_cleanups (old_chain); | |
43e526b9 | 7611 | } |
a6f3e723 SL |
7612 | |
7613 | /* Skip the ack char if we're in no-ack mode. */ | |
7614 | if (!rs->noack_mode) | |
c33e31fd | 7615 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7616 | if (is_notif != NULL) |
7617 | *is_notif = 0; | |
0876f84a | 7618 | return val; |
c906108c SS |
7619 | } |
7620 | ||
74531fed PA |
7621 | /* If we got a notification, handle it, and go back to looking |
7622 | for a packet. */ | |
7623 | else | |
7624 | { | |
7625 | gdb_assert (c == '%'); | |
7626 | ||
7627 | if (remote_debug) | |
7628 | { | |
6e5abd65 PA |
7629 | struct cleanup *old_chain; |
7630 | char *str; | |
7631 | ||
7632 | str = escape_buffer (*buf, val); | |
7633 | old_chain = make_cleanup (xfree, str); | |
7634 | fprintf_unfiltered (gdb_stdlog, | |
7635 | " Notification received: %s\n", | |
7636 | str); | |
7637 | do_cleanups (old_chain); | |
74531fed | 7638 | } |
fee9eda9 YQ |
7639 | if (is_notif != NULL) |
7640 | *is_notif = 1; | |
c906108c | 7641 | |
5965e028 | 7642 | handle_notification (rs->notif_state, *buf); |
c906108c | 7643 | |
74531fed | 7644 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7645 | |
74531fed | 7646 | if (expecting_notif) |
fee9eda9 | 7647 | return val; |
74531fed PA |
7648 | } |
7649 | } | |
7650 | } | |
7651 | ||
7652 | static int | |
7653 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7654 | { | |
fee9eda9 | 7655 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7656 | } |
7657 | ||
7658 | static int | |
fee9eda9 YQ |
7659 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7660 | int *is_notif) | |
74531fed | 7661 | { |
fee9eda9 YQ |
7662 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7663 | is_notif); | |
c906108c | 7664 | } |
74531fed | 7665 | |
c906108c SS |
7666 | \f |
7667 | static void | |
7d85a9c0 | 7668 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7669 | { |
c90a6fb7 | 7670 | volatile struct gdb_exception ex; |
0fdf84ca PA |
7671 | |
7672 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7673 | aren't on speaking terms with the remote system. */ |
0fdf84ca PA |
7674 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
7675 | { | |
7676 | putpkt ("k"); | |
7677 | } | |
7678 | if (ex.reason < 0) | |
7679 | { | |
7680 | if (ex.error == TARGET_CLOSE_ERROR) | |
7681 | { | |
7682 | /* If we got an (EOF) error that caused the target | |
7683 | to go away, then we're done, that's what we wanted. | |
7684 | "k" is susceptible to cause a premature EOF, given | |
7685 | that the remote server isn't actually required to | |
7686 | reply to "k", and it can happen that it doesn't | |
7687 | even get to reply ACK to the "k". */ | |
7688 | return; | |
7689 | } | |
7690 | ||
7691 | /* Otherwise, something went wrong. We didn't actually kill | |
7692 | the target. Just propagate the exception, and let the | |
7693 | user or higher layers decide what to do. */ | |
7694 | throw_exception (ex); | |
7695 | } | |
43ff13b4 | 7696 | |
0fdf84ca PA |
7697 | /* We've killed the remote end, we get to mourn it. Since this is |
7698 | target remote, single-process, mourning the inferior also | |
7699 | unpushes remote_ops. */ | |
43ff13b4 JM |
7700 | target_mourn_inferior (); |
7701 | } | |
7702 | ||
82f73884 PA |
7703 | static int |
7704 | remote_vkill (int pid, struct remote_state *rs) | |
7705 | { | |
7706 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7707 | return -1; | |
7708 | ||
7709 | /* Tell the remote target to detach. */ | |
bba74b36 | 7710 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7711 | putpkt (rs->buf); |
7712 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7713 | ||
7714 | if (packet_ok (rs->buf, | |
7715 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7716 | return 0; | |
7717 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7718 | return -1; | |
7719 | else | |
7720 | return 1; | |
7721 | } | |
7722 | ||
7723 | static void | |
7d85a9c0 | 7724 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7725 | { |
7726 | int res; | |
7727 | int pid = ptid_get_pid (inferior_ptid); | |
7728 | struct remote_state *rs = get_remote_state (); | |
7729 | ||
7730 | res = remote_vkill (pid, rs); | |
901f9912 | 7731 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7732 | { |
7733 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7734 | to specify the pid. */ | |
7735 | ||
7736 | putpkt ("k"); | |
7737 | #if 0 | |
7738 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7739 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7740 | res = 1; | |
7741 | #else | |
7742 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7743 | we do or not. For the existing stubs, kill is a noop. */ | |
7744 | res = 0; | |
7745 | #endif | |
7746 | } | |
7747 | ||
7748 | if (res != 0) | |
7749 | error (_("Can't kill process")); | |
7750 | ||
82f73884 PA |
7751 | target_mourn_inferior (); |
7752 | } | |
7753 | ||
c906108c | 7754 | static void |
136d6dae | 7755 | remote_mourn (struct target_ops *ops) |
c906108c | 7756 | { |
136d6dae | 7757 | remote_mourn_1 (ops); |
c906108c SS |
7758 | } |
7759 | ||
c906108c SS |
7760 | /* Worker function for remote_mourn. */ |
7761 | static void | |
fba45db2 | 7762 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7763 | { |
7764 | unpush_target (target); | |
ce5ce7ed | 7765 | |
8a2492ee PA |
7766 | /* remote_close takes care of doing most of the clean up. */ |
7767 | generic_mourn_inferior (); | |
c906108c SS |
7768 | } |
7769 | ||
2d717e4f DJ |
7770 | static void |
7771 | extended_remote_mourn_1 (struct target_ops *target) | |
7772 | { | |
7773 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7774 | |
e24a49d8 PA |
7775 | /* In case we got here due to an error, but we're going to stay |
7776 | connected. */ | |
7777 | rs->waiting_for_stop_reply = 0; | |
7778 | ||
dc1981d7 PA |
7779 | /* If the current general thread belonged to the process we just |
7780 | detached from or has exited, the remote side current general | |
7781 | thread becomes undefined. Considering a case like this: | |
7782 | ||
7783 | - We just got here due to a detach. | |
7784 | - The process that we're detaching from happens to immediately | |
7785 | report a global breakpoint being hit in non-stop mode, in the | |
7786 | same thread we had selected before. | |
7787 | - GDB attaches to this process again. | |
7788 | - This event happens to be the next event we handle. | |
7789 | ||
7790 | GDB would consider that the current general thread didn't need to | |
7791 | be set on the stub side (with Hg), since for all it knew, | |
7792 | GENERAL_THREAD hadn't changed. | |
7793 | ||
7794 | Notice that although in all-stop mode, the remote server always | |
7795 | sets the current thread to the thread reporting the stop event, | |
7796 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7797 | not* change the current thread when reporting a breakpoint hit, | |
7798 | due to the decoupling of event reporting and event handling. | |
7799 | ||
7800 | To keep things simple, we always invalidate our notion of the | |
7801 | current thread. */ | |
47f8a51d | 7802 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 7803 | |
2d717e4f DJ |
7804 | /* Unlike "target remote", we do not want to unpush the target; then |
7805 | the next time the user says "run", we won't be connected. */ | |
7806 | ||
48aa3c27 PA |
7807 | /* Call common code to mark the inferior as not running. */ |
7808 | generic_mourn_inferior (); | |
7809 | ||
d729566a | 7810 | if (!have_inferiors ()) |
2d717e4f | 7811 | { |
82f73884 PA |
7812 | if (!remote_multi_process_p (rs)) |
7813 | { | |
7814 | /* Check whether the target is running now - some remote stubs | |
7815 | automatically restart after kill. */ | |
7816 | putpkt ("?"); | |
7817 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7818 | ||
7819 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7820 | { | |
3e43a32a MS |
7821 | /* Assume that the target has been restarted. Set |
7822 | inferior_ptid so that bits of core GDB realizes | |
7823 | there's something here, e.g., so that the user can | |
7824 | say "kill" again. */ | |
82f73884 PA |
7825 | inferior_ptid = magic_null_ptid; |
7826 | } | |
82f73884 | 7827 | } |
2d717e4f DJ |
7828 | } |
7829 | } | |
c906108c SS |
7830 | |
7831 | static void | |
136d6dae | 7832 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7833 | { |
136d6dae | 7834 | extended_remote_mourn_1 (ops); |
2d717e4f | 7835 | } |
c906108c | 7836 | |
03583c20 | 7837 | static int |
2bfc0540 | 7838 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
7839 | { |
7840 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7841 | == PACKET_ENABLE); | |
7842 | } | |
7843 | ||
7844 | static void | |
7845 | extended_remote_disable_randomization (int val) | |
7846 | { | |
7847 | struct remote_state *rs = get_remote_state (); | |
7848 | char *reply; | |
7849 | ||
bba74b36 YQ |
7850 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7851 | val); | |
03583c20 UW |
7852 | putpkt (rs->buf); |
7853 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7854 | if (*reply == '\0') | |
7855 | error (_("Target does not support QDisableRandomization.")); | |
7856 | if (strcmp (reply, "OK") != 0) | |
7857 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7858 | } | |
7859 | ||
2d717e4f DJ |
7860 | static int |
7861 | extended_remote_run (char *args) | |
7862 | { | |
7863 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7864 | int len; |
c906108c | 7865 | |
2d717e4f DJ |
7866 | /* If the user has disabled vRun support, or we have detected that |
7867 | support is not available, do not try it. */ | |
7868 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7869 | return -1; | |
424163ea | 7870 | |
2d717e4f DJ |
7871 | strcpy (rs->buf, "vRun;"); |
7872 | len = strlen (rs->buf); | |
c906108c | 7873 | |
2d717e4f DJ |
7874 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7875 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
7876 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
7877 | strlen (remote_exec_file)); | |
2d717e4f | 7878 | |
d1a41061 | 7879 | gdb_assert (args != NULL); |
2d717e4f DJ |
7880 | if (*args) |
7881 | { | |
7882 | struct cleanup *back_to; | |
7883 | int i; | |
7884 | char **argv; | |
7885 | ||
d1a41061 | 7886 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7887 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7888 | for (i = 0; argv[i] != NULL; i++) | |
7889 | { | |
7890 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7891 | error (_("Argument list too long for run packet")); | |
7892 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
7893 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
7894 | strlen (argv[i])); | |
2d717e4f DJ |
7895 | } |
7896 | do_cleanups (back_to); | |
7897 | } | |
7898 | ||
7899 | rs->buf[len++] = '\0'; | |
7900 | ||
7901 | putpkt (rs->buf); | |
7902 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7903 | ||
7904 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7905 | { | |
3405876a | 7906 | /* We have a wait response. All is well. */ |
2d717e4f DJ |
7907 | return 0; |
7908 | } | |
7909 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7910 | /* It wasn't disabled before, but it is now. */ | |
7911 | return -1; | |
7912 | else | |
7913 | { | |
7914 | if (remote_exec_file[0] == '\0') | |
7915 | error (_("Running the default executable on the remote target failed; " | |
7916 | "try \"set remote exec-file\"?")); | |
7917 | else | |
7918 | error (_("Running \"%s\" on the remote target failed"), | |
7919 | remote_exec_file); | |
7920 | } | |
c906108c SS |
7921 | } |
7922 | ||
2d717e4f DJ |
7923 | /* In the extended protocol we want to be able to do things like |
7924 | "run" and have them basically work as expected. So we need | |
7925 | a special create_inferior function. We support changing the | |
7926 | executable file and the command line arguments, but not the | |
7927 | environment. */ | |
7928 | ||
43ff13b4 | 7929 | static void |
77a19445 TT |
7930 | extended_remote_create_inferior (struct target_ops *ops, |
7931 | char *exec_file, char *args, | |
7932 | char **env, int from_tty) | |
43ff13b4 | 7933 | { |
3405876a PA |
7934 | int run_worked; |
7935 | char *stop_reply; | |
7936 | struct remote_state *rs = get_remote_state (); | |
7937 | ||
43ff13b4 | 7938 | /* If running asynchronously, register the target file descriptor |
23860348 | 7939 | with the event loop. */ |
75c99385 | 7940 | if (target_can_async_p ()) |
2acceee2 | 7941 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7942 | |
03583c20 | 7943 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 7944 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
7945 | extended_remote_disable_randomization (disable_randomization); |
7946 | ||
43ff13b4 | 7947 | /* Now restart the remote server. */ |
3405876a PA |
7948 | run_worked = extended_remote_run (args) != -1; |
7949 | if (!run_worked) | |
2d717e4f DJ |
7950 | { |
7951 | /* vRun was not supported. Fail if we need it to do what the | |
7952 | user requested. */ | |
7953 | if (remote_exec_file[0]) | |
7954 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7955 | if (args[0]) | |
7956 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7957 | |
2d717e4f DJ |
7958 | /* Fall back to "R". */ |
7959 | extended_remote_restart (); | |
7960 | } | |
424163ea | 7961 | |
6c95b8df PA |
7962 | if (!have_inferiors ()) |
7963 | { | |
7964 | /* Clean up from the last time we ran, before we mark the target | |
7965 | running again. This will mark breakpoints uninserted, and | |
7966 | get_offsets may insert breakpoints. */ | |
7967 | init_thread_list (); | |
7968 | init_wait_for_inferior (); | |
7969 | } | |
45280a52 | 7970 | |
3405876a PA |
7971 | /* vRun's success return is a stop reply. */ |
7972 | stop_reply = run_worked ? rs->buf : NULL; | |
7973 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 7974 | |
2d717e4f DJ |
7975 | /* Get updated offsets, if the stub uses qOffsets. */ |
7976 | get_offsets (); | |
2d717e4f | 7977 | } |
c906108c | 7978 | \f |
c5aa993b | 7979 | |
b775012e LM |
7980 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7981 | the list of conditions (in agent expression bytecode format), if any, the | |
7982 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 7983 | started from BUF and ended at BUF_END. */ |
b775012e LM |
7984 | |
7985 | static int | |
7986 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
7987 | struct bp_target_info *bp_tgt, char *buf, |
7988 | char *buf_end) | |
b775012e LM |
7989 | { |
7990 | struct agent_expr *aexpr = NULL; | |
7991 | int i, ix; | |
7992 | char *pkt; | |
7993 | char *buf_start = buf; | |
7994 | ||
7995 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7996 | return 0; | |
7997 | ||
7998 | buf += strlen (buf); | |
bba74b36 | 7999 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8000 | buf++; |
8001 | ||
8002 | /* Send conditions to the target and free the vector. */ | |
8003 | for (ix = 0; | |
8004 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8005 | ix++) | |
8006 | { | |
bba74b36 | 8007 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8008 | buf += strlen (buf); |
8009 | for (i = 0; i < aexpr->len; ++i) | |
8010 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8011 | *buf = '\0'; | |
8012 | } | |
b775012e LM |
8013 | return 0; |
8014 | } | |
8015 | ||
d3ce09f5 SS |
8016 | static void |
8017 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8018 | struct bp_target_info *bp_tgt, char *buf) | |
8019 | { | |
8020 | struct agent_expr *aexpr = NULL; | |
8021 | int i, ix; | |
8022 | ||
8023 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8024 | return; | |
8025 | ||
8026 | buf += strlen (buf); | |
8027 | ||
8028 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8029 | buf += strlen (buf); | |
8030 | ||
8031 | /* Concatenate all the agent expressions that are commands into the | |
8032 | cmds parameter. */ | |
8033 | for (ix = 0; | |
8034 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8035 | ix++) | |
8036 | { | |
8037 | sprintf (buf, "X%x,", aexpr->len); | |
8038 | buf += strlen (buf); | |
8039 | for (i = 0; i < aexpr->len; ++i) | |
8040 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8041 | *buf = '\0'; | |
8042 | } | |
d3ce09f5 SS |
8043 | } |
8044 | ||
8181d85f DJ |
8045 | /* Insert a breakpoint. On targets that have software breakpoint |
8046 | support, we ask the remote target to do the work; on targets | |
8047 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8048 | |
8049 | static int | |
3db08215 MM |
8050 | remote_insert_breakpoint (struct target_ops *ops, |
8051 | struct gdbarch *gdbarch, | |
a6d9a66e | 8052 | struct bp_target_info *bp_tgt) |
c906108c | 8053 | { |
d471ea57 AC |
8054 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8055 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8056 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8057 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8058 | |
444abaca | 8059 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8060 | { |
7c0f6dcc | 8061 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8062 | struct remote_state *rs; |
bba74b36 | 8063 | char *p, *endbuf; |
7c0f6dcc | 8064 | int bpsize; |
b775012e | 8065 | struct condition_list *cond = NULL; |
4fff2411 | 8066 | |
28439a30 PA |
8067 | /* Make sure the remote is pointing at the right process, if |
8068 | necessary. */ | |
8069 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8070 | set_general_process (); | |
8071 | ||
a1dcb23a | 8072 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8073 | |
8074 | rs = get_remote_state (); | |
8075 | p = rs->buf; | |
bba74b36 | 8076 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8077 | |
96baa820 JM |
8078 | *(p++) = 'Z'; |
8079 | *(p++) = '0'; | |
8080 | *(p++) = ','; | |
7c0f6dcc | 8081 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8082 | p += hexnumstr (p, addr); |
bba74b36 | 8083 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8084 | |
efcc2da7 | 8085 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8086 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8087 | |
78eff0ec | 8088 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8089 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8090 | ||
6d820c5c DJ |
8091 | putpkt (rs->buf); |
8092 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8093 | |
6d820c5c | 8094 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8095 | { |
d471ea57 AC |
8096 | case PACKET_ERROR: |
8097 | return -1; | |
8098 | case PACKET_OK: | |
7c0f6dcc JL |
8099 | bp_tgt->placed_address = addr; |
8100 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8101 | return 0; |
8102 | case PACKET_UNKNOWN: | |
8103 | break; | |
96baa820 JM |
8104 | } |
8105 | } | |
c906108c | 8106 | |
0000e5cc PA |
8107 | /* If this breakpoint has target-side commands but this stub doesn't |
8108 | support Z0 packets, throw error. */ | |
8109 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8110 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8111 | Target doesn't support breakpoints that have target side commands.")); | |
8112 | ||
3db08215 | 8113 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8114 | } |
8115 | ||
8116 | static int | |
3db08215 MM |
8117 | remote_remove_breakpoint (struct target_ops *ops, |
8118 | struct gdbarch *gdbarch, | |
a6d9a66e | 8119 | struct bp_target_info *bp_tgt) |
c906108c | 8120 | { |
8181d85f | 8121 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8122 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8123 | |
444abaca | 8124 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8125 | { |
6d820c5c | 8126 | char *p = rs->buf; |
bba74b36 | 8127 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8128 | |
28439a30 PA |
8129 | /* Make sure the remote is pointing at the right process, if |
8130 | necessary. */ | |
8131 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8132 | set_general_process (); | |
8133 | ||
96baa820 JM |
8134 | *(p++) = 'z'; |
8135 | *(p++) = '0'; | |
8136 | *(p++) = ','; | |
8137 | ||
8181d85f DJ |
8138 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8139 | p += hexnumstr (p, addr); | |
bba74b36 | 8140 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8141 | |
6d820c5c DJ |
8142 | putpkt (rs->buf); |
8143 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8144 | |
6d820c5c | 8145 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8146 | } |
8147 | ||
3db08215 | 8148 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8149 | } |
8150 | ||
d471ea57 AC |
8151 | static int |
8152 | watchpoint_to_Z_packet (int type) | |
8153 | { | |
8154 | switch (type) | |
8155 | { | |
8156 | case hw_write: | |
bb858e6a | 8157 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8158 | break; |
8159 | case hw_read: | |
bb858e6a | 8160 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8161 | break; |
8162 | case hw_access: | |
bb858e6a | 8163 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8164 | break; |
8165 | default: | |
8e65ff28 | 8166 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8167 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8168 | } |
8169 | } | |
8170 | ||
3c3bea1c | 8171 | static int |
7bb99c53 TT |
8172 | remote_insert_watchpoint (struct target_ops *self, |
8173 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8174 | struct expression *cond) |
96baa820 | 8175 | { |
d01949b6 | 8176 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8177 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8178 | char *p; |
d471ea57 | 8179 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8180 | |
444abaca | 8181 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8182 | return 1; |
802188a7 | 8183 | |
28439a30 PA |
8184 | /* Make sure the remote is pointing at the right process, if |
8185 | necessary. */ | |
8186 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8187 | set_general_process (); | |
8188 | ||
bba74b36 | 8189 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8190 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8191 | addr = remote_address_masked (addr); |
8192 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8193 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8194 | |
6d820c5c DJ |
8195 | putpkt (rs->buf); |
8196 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8197 | |
6d820c5c | 8198 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8199 | { |
8200 | case PACKET_ERROR: | |
d471ea57 | 8201 | return -1; |
85d721b8 PA |
8202 | case PACKET_UNKNOWN: |
8203 | return 1; | |
d471ea57 AC |
8204 | case PACKET_OK: |
8205 | return 0; | |
8206 | } | |
8e65ff28 | 8207 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8208 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8209 | } |
8210 | ||
283002cf MR |
8211 | static int |
8212 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8213 | CORE_ADDR start, int length) | |
8214 | { | |
8215 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8216 | ||
8217 | return diff < length; | |
8218 | } | |
8219 | ||
d471ea57 | 8220 | |
3c3bea1c | 8221 | static int |
11b5219a TT |
8222 | remote_remove_watchpoint (struct target_ops *self, |
8223 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8224 | struct expression *cond) |
96baa820 | 8225 | { |
d01949b6 | 8226 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8227 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8228 | char *p; |
d471ea57 AC |
8229 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8230 | ||
444abaca | 8231 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8232 | return -1; |
802188a7 | 8233 | |
28439a30 PA |
8234 | /* Make sure the remote is pointing at the right process, if |
8235 | necessary. */ | |
8236 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8237 | set_general_process (); | |
8238 | ||
bba74b36 | 8239 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8240 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8241 | addr = remote_address_masked (addr); |
8242 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8243 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8244 | putpkt (rs->buf); |
8245 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8246 | |
6d820c5c | 8247 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8248 | { |
8249 | case PACKET_ERROR: | |
8250 | case PACKET_UNKNOWN: | |
8251 | return -1; | |
8252 | case PACKET_OK: | |
8253 | return 0; | |
8254 | } | |
8e65ff28 | 8255 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8256 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8257 | } |
8258 | ||
3c3bea1c | 8259 | |
501eef12 | 8260 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8261 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8262 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8263 | |
480a3f21 | 8264 | static int |
31568a15 TT |
8265 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8266 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8267 | { |
8268 | if (remote_hw_watchpoint_length_limit == 0) | |
8269 | return 0; | |
8270 | else if (remote_hw_watchpoint_length_limit < 0) | |
8271 | return 1; | |
8272 | else if (len <= remote_hw_watchpoint_length_limit) | |
8273 | return 1; | |
8274 | else | |
8275 | return 0; | |
8276 | } | |
8277 | ||
b9362cc7 | 8278 | static int |
5461485a TT |
8279 | remote_check_watch_resources (struct target_ops *self, |
8280 | int type, int cnt, int ot) | |
96baa820 | 8281 | { |
3c3bea1c GS |
8282 | if (type == bp_hardware_breakpoint) |
8283 | { | |
8284 | if (remote_hw_breakpoint_limit == 0) | |
8285 | return 0; | |
501eef12 AC |
8286 | else if (remote_hw_breakpoint_limit < 0) |
8287 | return 1; | |
3c3bea1c GS |
8288 | else if (cnt <= remote_hw_breakpoint_limit) |
8289 | return 1; | |
8290 | } | |
8291 | else | |
8292 | { | |
8293 | if (remote_hw_watchpoint_limit == 0) | |
8294 | return 0; | |
501eef12 AC |
8295 | else if (remote_hw_watchpoint_limit < 0) |
8296 | return 1; | |
3c3bea1c GS |
8297 | else if (ot) |
8298 | return -1; | |
8299 | else if (cnt <= remote_hw_watchpoint_limit) | |
8300 | return 1; | |
8301 | } | |
8302 | return -1; | |
8303 | } | |
8304 | ||
b9362cc7 | 8305 | static int |
6a109b6b | 8306 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8307 | { |
ee154bee TT |
8308 | struct remote_state *rs = get_remote_state (); |
8309 | ||
8310 | return rs->remote_stopped_by_watchpoint_p; | |
3c3bea1c GS |
8311 | } |
8312 | ||
4aa7a7f5 JJ |
8313 | static int |
8314 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8315 | { |
ee154bee | 8316 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8317 | int rc = 0; |
a744cf53 | 8318 | |
6a109b6b | 8319 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8320 | { |
ee154bee | 8321 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8322 | rc = 1; |
8323 | } | |
8324 | ||
8325 | return rc; | |
3c3bea1c GS |
8326 | } |
8327 | ||
8328 | ||
8329 | static int | |
23a26771 | 8330 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8331 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8332 | { |
8181d85f | 8333 | CORE_ADDR addr; |
4fff2411 | 8334 | struct remote_state *rs; |
bba74b36 | 8335 | char *p, *endbuf; |
dd61ec5c | 8336 | char *message; |
802188a7 | 8337 | |
c8189ed1 | 8338 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8339 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8340 | |
a1dcb23a | 8341 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8342 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8343 | |
444abaca | 8344 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8345 | return -1; |
2bc416ba | 8346 | |
28439a30 PA |
8347 | /* Make sure the remote is pointing at the right process, if |
8348 | necessary. */ | |
8349 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8350 | set_general_process (); | |
8351 | ||
4fff2411 JZ |
8352 | rs = get_remote_state (); |
8353 | p = rs->buf; | |
bba74b36 | 8354 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8355 | |
96baa820 JM |
8356 | *(p++) = 'Z'; |
8357 | *(p++) = '1'; | |
8358 | *(p++) = ','; | |
802188a7 | 8359 | |
8181d85f | 8360 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8361 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8362 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8363 | |
efcc2da7 | 8364 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 8365 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8366 | |
78eff0ec | 8367 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
8368 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8369 | ||
6d820c5c DJ |
8370 | putpkt (rs->buf); |
8371 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8372 | |
6d820c5c | 8373 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8374 | { |
8375 | case PACKET_ERROR: | |
dd61ec5c MW |
8376 | if (rs->buf[1] == '.') |
8377 | { | |
8378 | message = strchr (rs->buf + 2, '.'); | |
8379 | if (message) | |
0316657e | 8380 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8381 | } |
8382 | return -1; | |
d471ea57 AC |
8383 | case PACKET_UNKNOWN: |
8384 | return -1; | |
8385 | case PACKET_OK: | |
8386 | return 0; | |
8387 | } | |
8e65ff28 | 8388 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8389 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8390 | } |
8391 | ||
d471ea57 | 8392 | |
802188a7 | 8393 | static int |
a64dc96c | 8394 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8395 | struct bp_target_info *bp_tgt) |
96baa820 | 8396 | { |
8181d85f | 8397 | CORE_ADDR addr; |
d01949b6 | 8398 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8399 | char *p = rs->buf; |
bba74b36 | 8400 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8401 | |
444abaca | 8402 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8403 | return -1; |
802188a7 | 8404 | |
28439a30 PA |
8405 | /* Make sure the remote is pointing at the right process, if |
8406 | necessary. */ | |
8407 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8408 | set_general_process (); | |
8409 | ||
96baa820 JM |
8410 | *(p++) = 'z'; |
8411 | *(p++) = '1'; | |
8412 | *(p++) = ','; | |
802188a7 | 8413 | |
8181d85f | 8414 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8415 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8416 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8417 | |
6d820c5c DJ |
8418 | putpkt (rs->buf); |
8419 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8420 | |
6d820c5c | 8421 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8422 | { |
8423 | case PACKET_ERROR: | |
8424 | case PACKET_UNKNOWN: | |
8425 | return -1; | |
8426 | case PACKET_OK: | |
8427 | return 0; | |
8428 | } | |
8e65ff28 | 8429 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8430 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8431 | } |
96baa820 | 8432 | |
4a5e7a5b PA |
8433 | /* Verify memory using the "qCRC:" request. */ |
8434 | ||
8435 | static int | |
8436 | remote_verify_memory (struct target_ops *ops, | |
8437 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8438 | { | |
8439 | struct remote_state *rs = get_remote_state (); | |
8440 | unsigned long host_crc, target_crc; | |
8441 | char *tmp; | |
8442 | ||
28439a30 PA |
8443 | /* Make sure the remote is pointing at the right process. */ |
8444 | set_general_process (); | |
8445 | ||
4a5e7a5b PA |
8446 | /* FIXME: assumes lma can fit into long. */ |
8447 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8448 | (long) lma, (long) size); | |
8449 | putpkt (rs->buf); | |
8450 | ||
8451 | /* Be clever; compute the host_crc before waiting for target | |
8452 | reply. */ | |
85ec6ce7 | 8453 | host_crc = xcrc32 (data, size, 0xffffffff); |
4a5e7a5b PA |
8454 | |
8455 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8456 | if (rs->buf[0] == 'E') | |
8457 | return -1; | |
8458 | ||
8459 | if (rs->buf[0] != 'C') | |
8460 | error (_("remote target does not support this operation")); | |
8461 | ||
8462 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8463 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8464 | ||
8465 | return (host_crc == target_crc); | |
8466 | } | |
8467 | ||
c906108c SS |
8468 | /* compare-sections command |
8469 | ||
8470 | With no arguments, compares each loadable section in the exec bfd | |
8471 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8472 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8473 | |
c906108c | 8474 | static void |
fba45db2 | 8475 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8476 | { |
8477 | asection *s; | |
c906108c | 8478 | struct cleanup *old_chain; |
948f8e3d | 8479 | gdb_byte *sectdata; |
ce359b09 | 8480 | const char *sectname; |
c906108c SS |
8481 | bfd_size_type size; |
8482 | bfd_vma lma; | |
8483 | int matched = 0; | |
8484 | int mismatched = 0; | |
4a5e7a5b | 8485 | int res; |
c906108c SS |
8486 | |
8487 | if (!exec_bfd) | |
8a3fe4f8 | 8488 | error (_("command cannot be used without an exec file")); |
c906108c | 8489 | |
28439a30 PA |
8490 | /* Make sure the remote is pointing at the right process. */ |
8491 | set_general_process (); | |
8492 | ||
c5aa993b | 8493 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8494 | { |
8495 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8496 | continue; /* Skip non-loadable section. */ |
c906108c | 8497 | |
2c500098 | 8498 | size = bfd_get_section_size (s); |
c906108c | 8499 | if (size == 0) |
0df8b418 | 8500 | continue; /* Skip zero-length section. */ |
c906108c | 8501 | |
ce359b09 | 8502 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8503 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8504 | continue; /* Not the section selected by user. */ |
c906108c | 8505 | |
0df8b418 | 8506 | matched = 1; /* Do this section. */ |
c906108c | 8507 | lma = s->lma; |
c906108c | 8508 | |
c906108c | 8509 | sectdata = xmalloc (size); |
b8c9b27d | 8510 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8511 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8512 | |
4a5e7a5b PA |
8513 | res = target_verify_memory (sectdata, lma, size); |
8514 | ||
8515 | if (res == -1) | |
5af949e3 | 8516 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8517 | paddress (target_gdbarch (), lma), |
8518 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8519 | |
5af949e3 | 8520 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8521 | paddress (target_gdbarch (), lma), |
8522 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8523 | if (res) |
c906108c SS |
8524 | printf_filtered ("matched.\n"); |
8525 | else | |
c5aa993b JM |
8526 | { |
8527 | printf_filtered ("MIS-MATCHED!\n"); | |
8528 | mismatched++; | |
8529 | } | |
c906108c SS |
8530 | |
8531 | do_cleanups (old_chain); | |
8532 | } | |
8533 | if (mismatched > 0) | |
8a3fe4f8 AC |
8534 | warning (_("One or more sections of the remote executable does not match\n\ |
8535 | the loaded file\n")); | |
c906108c | 8536 | if (args && !matched) |
a3f17187 | 8537 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8538 | } |
8539 | ||
0e7f50da UW |
8540 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8541 | into remote target. The number of bytes written to the remote | |
8542 | target is returned, or -1 for error. */ | |
8543 | ||
9b409511 | 8544 | static enum target_xfer_status |
0e7f50da UW |
8545 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
8546 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 8547 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
8548 | struct packet_config *packet) |
8549 | { | |
8550 | int i, buf_len; | |
8551 | ULONGEST n; | |
0e7f50da UW |
8552 | struct remote_state *rs = get_remote_state (); |
8553 | int max_size = get_memory_write_packet_size (); | |
8554 | ||
8555 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8556 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8557 | |
8558 | /* Insert header. */ | |
8559 | i = snprintf (rs->buf, max_size, | |
8560 | "qXfer:%s:write:%s:%s:", | |
8561 | object_name, annex ? annex : "", | |
8562 | phex_nz (offset, sizeof offset)); | |
8563 | max_size -= (i + 1); | |
8564 | ||
8565 | /* Escape as much data as fits into rs->buf. */ | |
8566 | buf_len = remote_escape_output | |
bc20a4af | 8567 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8568 | |
8569 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8570 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8571 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8572 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8573 | |
8574 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
8575 | |
8576 | *xfered_len = n; | |
8577 | return TARGET_XFER_OK; | |
0e7f50da UW |
8578 | } |
8579 | ||
0876f84a DJ |
8580 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8581 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8582 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8583 | The number of bytes read may be less than LEN without indicating an | |
8584 | EOF. PACKET is checked and updated to indicate whether the remote | |
8585 | target supports this object. */ | |
8586 | ||
9b409511 | 8587 | static enum target_xfer_status |
0876f84a DJ |
8588 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
8589 | const char *annex, | |
8590 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 8591 | ULONGEST *xfered_len, |
0876f84a DJ |
8592 | struct packet_config *packet) |
8593 | { | |
0876f84a | 8594 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8595 | LONGEST i, n, packet_len; |
8596 | ||
8597 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8598 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8599 | |
8600 | /* Check whether we've cached an end-of-object packet that matches | |
8601 | this request. */ | |
8e88304f | 8602 | if (rs->finished_object) |
0876f84a | 8603 | { |
8e88304f TT |
8604 | if (strcmp (object_name, rs->finished_object) == 0 |
8605 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8606 | && offset == rs->finished_offset) | |
9b409511 YQ |
8607 | return TARGET_XFER_EOF; |
8608 | ||
0876f84a DJ |
8609 | |
8610 | /* Otherwise, we're now reading something different. Discard | |
8611 | the cache. */ | |
8e88304f TT |
8612 | xfree (rs->finished_object); |
8613 | xfree (rs->finished_annex); | |
8614 | rs->finished_object = NULL; | |
8615 | rs->finished_annex = NULL; | |
0876f84a DJ |
8616 | } |
8617 | ||
8618 | /* Request only enough to fit in a single packet. The actual data | |
8619 | may not, since we don't know how much of it will need to be escaped; | |
8620 | the target is free to respond with slightly less data. We subtract | |
8621 | five to account for the response type and the protocol frame. */ | |
8622 | n = min (get_remote_packet_size () - 5, len); | |
8623 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8624 | object_name, annex ? annex : "", | |
8625 | phex_nz (offset, sizeof offset), | |
8626 | phex_nz (n, sizeof n)); | |
8627 | i = putpkt (rs->buf); | |
8628 | if (i < 0) | |
2ed4b548 | 8629 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8630 | |
8631 | rs->buf[0] = '\0'; | |
8632 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8633 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8634 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8635 | |
8636 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8637 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8638 | ||
8639 | /* 'm' means there is (or at least might be) more data after this | |
8640 | batch. That does not make sense unless there's at least one byte | |
8641 | of data in this reply. */ | |
8642 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8643 | error (_("Remote qXfer reply contained no data.")); | |
8644 | ||
8645 | /* Got some data. */ | |
bc20a4af PA |
8646 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8647 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8648 | |
8649 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8650 | or possibly empty. If we have the final block of a non-empty |
8651 | object, record this fact to bypass a subsequent partial read. */ | |
8652 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8653 | { |
8e88304f TT |
8654 | rs->finished_object = xstrdup (object_name); |
8655 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8656 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8657 | } |
8658 | ||
9b409511 YQ |
8659 | if (i == 0) |
8660 | return TARGET_XFER_EOF; | |
8661 | else | |
8662 | { | |
8663 | *xfered_len = i; | |
8664 | return TARGET_XFER_OK; | |
8665 | } | |
0876f84a DJ |
8666 | } |
8667 | ||
9b409511 | 8668 | static enum target_xfer_status |
4b8a223f | 8669 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 8670 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
8671 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
8672 | ULONGEST *xfered_len) | |
c906108c | 8673 | { |
82f73884 | 8674 | struct remote_state *rs; |
c906108c | 8675 | int i; |
6d820c5c | 8676 | char *p2; |
1e3ff5ad | 8677 | char query_type; |
c906108c | 8678 | |
e6e4e701 | 8679 | set_remote_traceframe (); |
82f73884 PA |
8680 | set_general_thread (inferior_ptid); |
8681 | ||
8682 | rs = get_remote_state (); | |
8683 | ||
b2182ed2 | 8684 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8685 | if (object == TARGET_OBJECT_MEMORY) |
8686 | { | |
2d717e4f DJ |
8687 | /* If the remote target is connected but not running, we should |
8688 | pass this request down to a lower stratum (e.g. the executable | |
8689 | file). */ | |
8690 | if (!target_has_execution) | |
9b409511 | 8691 | return TARGET_XFER_EOF; |
2d717e4f | 8692 | |
21e3b9b9 | 8693 | if (writebuf != NULL) |
9b409511 | 8694 | return remote_write_bytes (offset, writebuf, len, xfered_len); |
21e3b9b9 | 8695 | else |
9b409511 | 8696 | return remote_read_bytes (offset, readbuf, len, xfered_len); |
21e3b9b9 DJ |
8697 | } |
8698 | ||
0df8b418 | 8699 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8700 | if (object == TARGET_OBJECT_SPU) |
8701 | { | |
8702 | if (readbuf) | |
8703 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
8704 | xfered_len, &remote_protocol_packets |
8705 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
8706 | else |
8707 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
8708 | xfered_len, &remote_protocol_packets |
8709 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
8710 | } |
8711 | ||
4aa995e1 PA |
8712 | /* Handle extra signal info using qxfer packets. */ |
8713 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8714 | { | |
8715 | if (readbuf) | |
8716 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 8717 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
8718 | [PACKET_qXfer_siginfo_read]); |
8719 | else | |
3e43a32a | 8720 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 8721 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
8722 | &remote_protocol_packets |
8723 | [PACKET_qXfer_siginfo_write]); | |
8724 | } | |
8725 | ||
0fb4aa4b PA |
8726 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8727 | { | |
8728 | if (readbuf) | |
3e43a32a | 8729 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 8730 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
8731 | &remote_protocol_packets |
8732 | [PACKET_qXfer_statictrace_read]); | |
8733 | else | |
2ed4b548 | 8734 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
8735 | } |
8736 | ||
a76d924d DJ |
8737 | /* Only handle flash writes. */ |
8738 | if (writebuf != NULL) | |
8739 | { | |
8740 | LONGEST xfered; | |
8741 | ||
8742 | switch (object) | |
8743 | { | |
8744 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
8745 | return remote_flash_write (ops, offset, len, xfered_len, |
8746 | writebuf); | |
a76d924d DJ |
8747 | |
8748 | default: | |
2ed4b548 | 8749 | return TARGET_XFER_E_IO; |
a76d924d DJ |
8750 | } |
8751 | } | |
4b8a223f | 8752 | |
1e3ff5ad AC |
8753 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8754 | objects!!! Instead specify new query packets. */ | |
8755 | switch (object) | |
c906108c | 8756 | { |
1e3ff5ad AC |
8757 | case TARGET_OBJECT_AVR: |
8758 | query_type = 'R'; | |
8759 | break; | |
802188a7 RM |
8760 | |
8761 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8762 | gdb_assert (annex == NULL); |
8763 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 8764 | xfered_len, |
0876f84a | 8765 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 8766 | |
23181151 DJ |
8767 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8768 | return remote_read_qxfer | |
9b409511 | 8769 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
8770 | &remote_protocol_packets[PACKET_qXfer_features]); |
8771 | ||
cfa9d6d9 DJ |
8772 | case TARGET_OBJECT_LIBRARIES: |
8773 | return remote_read_qxfer | |
9b409511 | 8774 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
8775 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
8776 | ||
2268b414 JK |
8777 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8778 | return remote_read_qxfer | |
9b409511 | 8779 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
8780 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
8781 | ||
fd79ecee DJ |
8782 | case TARGET_OBJECT_MEMORY_MAP: |
8783 | gdb_assert (annex == NULL); | |
8784 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 8785 | xfered_len, |
fd79ecee DJ |
8786 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
8787 | ||
07e059b5 VP |
8788 | case TARGET_OBJECT_OSDATA: |
8789 | /* Should only get here if we're connected. */ | |
5d93a237 | 8790 | gdb_assert (rs->remote_desc); |
07e059b5 | 8791 | return remote_read_qxfer |
9b409511 | 8792 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
8793 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
8794 | ||
dc146f7c VP |
8795 | case TARGET_OBJECT_THREADS: |
8796 | gdb_assert (annex == NULL); | |
8797 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 8798 | xfered_len, |
dc146f7c VP |
8799 | &remote_protocol_packets[PACKET_qXfer_threads]); |
8800 | ||
b3b9301e PA |
8801 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8802 | gdb_assert (annex == NULL); | |
8803 | return remote_read_qxfer | |
9b409511 | 8804 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 8805 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
8806 | |
8807 | case TARGET_OBJECT_FDPIC: | |
8808 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 8809 | xfered_len, |
78d85199 | 8810 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
8811 | |
8812 | case TARGET_OBJECT_OPENVMS_UIB: | |
8813 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 8814 | xfered_len, |
169081d0 TG |
8815 | &remote_protocol_packets[PACKET_qXfer_uib]); |
8816 | ||
9accd112 MM |
8817 | case TARGET_OBJECT_BTRACE: |
8818 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 8819 | xfered_len, |
9accd112 MM |
8820 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
8821 | ||
1e3ff5ad | 8822 | default: |
2ed4b548 | 8823 | return TARGET_XFER_E_IO; |
c906108c SS |
8824 | } |
8825 | ||
4b8a223f | 8826 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8827 | buffer size. */ |
4b8a223f | 8828 | if (offset == 0 && len == 0) |
ea9c271d | 8829 | return (get_remote_packet_size ()); |
0df8b418 | 8830 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8831 | large enough let the caller deal with it. */ |
ea9c271d | 8832 | if (len < get_remote_packet_size ()) |
2ed4b548 | 8833 | return TARGET_XFER_E_IO; |
ea9c271d | 8834 | len = get_remote_packet_size (); |
1e3ff5ad | 8835 | |
23860348 | 8836 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 8837 | if (!rs->remote_desc) |
8a3fe4f8 | 8838 | error (_("remote query is only available after target open")); |
c906108c | 8839 | |
1e3ff5ad | 8840 | gdb_assert (annex != NULL); |
4b8a223f | 8841 | gdb_assert (readbuf != NULL); |
c906108c | 8842 | |
6d820c5c | 8843 | p2 = rs->buf; |
c906108c SS |
8844 | *p2++ = 'q'; |
8845 | *p2++ = query_type; | |
8846 | ||
23860348 MS |
8847 | /* We used one buffer char for the remote protocol q command and |
8848 | another for the query type. As the remote protocol encapsulation | |
8849 | uses 4 chars plus one extra in case we are debugging | |
8850 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8851 | string. */ | |
c906108c | 8852 | i = 0; |
ea9c271d | 8853 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8854 | { |
1e3ff5ad AC |
8855 | /* Bad caller may have sent forbidden characters. */ |
8856 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8857 | *p2++ = annex[i]; | |
c906108c SS |
8858 | i++; |
8859 | } | |
1e3ff5ad AC |
8860 | *p2 = '\0'; |
8861 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8862 | |
6d820c5c | 8863 | i = putpkt (rs->buf); |
c5aa993b | 8864 | if (i < 0) |
2ed4b548 | 8865 | return TARGET_XFER_E_IO; |
c906108c | 8866 | |
6d820c5c DJ |
8867 | getpkt (&rs->buf, &rs->buf_size, 0); |
8868 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8869 | |
9b409511 YQ |
8870 | *xfered_len = strlen ((char *) readbuf); |
8871 | return TARGET_XFER_OK; | |
c906108c SS |
8872 | } |
8873 | ||
08388c79 DE |
8874 | static int |
8875 | remote_search_memory (struct target_ops* ops, | |
8876 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8877 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8878 | CORE_ADDR *found_addrp) | |
8879 | { | |
f5656ead | 8880 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
8881 | struct remote_state *rs = get_remote_state (); |
8882 | int max_size = get_memory_write_packet_size (); | |
8883 | struct packet_config *packet = | |
8884 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8885 | /* Number of packet bytes used to encode the pattern; |
8886 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8887 | int escaped_pattern_len; |
0df8b418 | 8888 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8889 | int used_pattern_len; |
8890 | int i; | |
8891 | int found; | |
8892 | ULONGEST found_addr; | |
8893 | ||
8894 | /* Don't go to the target if we don't have to. | |
8895 | This is done before checking packet->support to avoid the possibility that | |
8896 | a success for this edge case means the facility works in general. */ | |
8897 | if (pattern_len > search_space_len) | |
8898 | return 0; | |
8899 | if (pattern_len == 0) | |
8900 | { | |
8901 | *found_addrp = start_addr; | |
8902 | return 1; | |
8903 | } | |
8904 | ||
8905 | /* If we already know the packet isn't supported, fall back to the simple | |
8906 | way of searching memory. */ | |
8907 | ||
8908 | if (packet->support == PACKET_DISABLE) | |
8909 | { | |
8910 | /* Target doesn't provided special support, fall back and use the | |
8911 | standard support (copy memory and do the search here). */ | |
8912 | return simple_search_memory (ops, start_addr, search_space_len, | |
8913 | pattern, pattern_len, found_addrp); | |
8914 | } | |
8915 | ||
28439a30 PA |
8916 | /* Make sure the remote is pointing at the right process. */ |
8917 | set_general_process (); | |
8918 | ||
08388c79 DE |
8919 | /* Insert header. */ |
8920 | i = snprintf (rs->buf, max_size, | |
8921 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8922 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8923 | phex_nz (search_space_len, sizeof (search_space_len))); |
8924 | max_size -= (i + 1); | |
8925 | ||
8926 | /* Escape as much data as fits into rs->buf. */ | |
8927 | escaped_pattern_len = | |
bc20a4af | 8928 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
8929 | &used_pattern_len, max_size); |
8930 | ||
8931 | /* Bail if the pattern is too large. */ | |
8932 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8933 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8934 | |
8935 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8936 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8937 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8938 | { | |
8939 | /* The request may not have worked because the command is not | |
8940 | supported. If so, fall back to the simple way. */ | |
8941 | if (packet->support == PACKET_DISABLE) | |
8942 | { | |
8943 | return simple_search_memory (ops, start_addr, search_space_len, | |
8944 | pattern, pattern_len, found_addrp); | |
8945 | } | |
8946 | return -1; | |
8947 | } | |
8948 | ||
8949 | if (rs->buf[0] == '0') | |
8950 | found = 0; | |
8951 | else if (rs->buf[0] == '1') | |
8952 | { | |
8953 | found = 1; | |
8954 | if (rs->buf[1] != ',') | |
10e0fa18 | 8955 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8956 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8957 | *found_addrp = found_addr; | |
8958 | } | |
8959 | else | |
10e0fa18 | 8960 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8961 | |
8962 | return found; | |
8963 | } | |
8964 | ||
96baa820 | 8965 | static void |
1aac633b | 8966 | remote_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 8967 | struct ui_file *outbuf) |
96baa820 | 8968 | { |
d01949b6 | 8969 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8970 | char *p = rs->buf; |
96baa820 | 8971 | |
5d93a237 | 8972 | if (!rs->remote_desc) |
8a3fe4f8 | 8973 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8974 | |
23860348 | 8975 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8976 | if (command == NULL) |
8977 | command = ""; | |
8978 | ||
23860348 | 8979 | /* The query prefix. */ |
2e9f7625 DJ |
8980 | strcpy (rs->buf, "qRcmd,"); |
8981 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8982 | |
3e43a32a MS |
8983 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8984 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8985 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8986 | |
23860348 | 8987 | /* Encode the actual command. */ |
9f1b45b0 | 8988 | bin2hex ((gdb_byte *) command, p, strlen (command)); |
96baa820 | 8989 | |
6d820c5c | 8990 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8991 | error (_("Communication problem with target.")); |
96baa820 JM |
8992 | |
8993 | /* get/display the response */ | |
8994 | while (1) | |
8995 | { | |
2e9f7625 DJ |
8996 | char *buf; |
8997 | ||
00bf0b85 | 8998 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8999 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9000 | rs->buf[0] = '\0'; |
5b37825d PW |
9001 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9002 | { | |
9003 | /* Timeout. Continue to (try to) read responses. | |
9004 | This is better than stopping with an error, assuming the stub | |
9005 | is still executing the (long) monitor command. | |
9006 | If needed, the user can interrupt gdb using C-c, obtaining | |
9007 | an effect similar to stop on timeout. */ | |
9008 | continue; | |
9009 | } | |
2e9f7625 | 9010 | buf = rs->buf; |
96baa820 | 9011 | if (buf[0] == '\0') |
8a3fe4f8 | 9012 | error (_("Target does not support this command.")); |
96baa820 JM |
9013 | if (buf[0] == 'O' && buf[1] != 'K') |
9014 | { | |
23860348 | 9015 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9016 | continue; |
9017 | } | |
9018 | if (strcmp (buf, "OK") == 0) | |
9019 | break; | |
7be570e7 JM |
9020 | if (strlen (buf) == 3 && buf[0] == 'E' |
9021 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9022 | { | |
8a3fe4f8 | 9023 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9024 | } |
96baa820 JM |
9025 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9026 | { | |
9027 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9028 | |
96baa820 JM |
9029 | fputc_unfiltered (c, outbuf); |
9030 | } | |
9031 | break; | |
9032 | } | |
9033 | } | |
9034 | ||
fd79ecee DJ |
9035 | static VEC(mem_region_s) * |
9036 | remote_memory_map (struct target_ops *ops) | |
9037 | { | |
9038 | VEC(mem_region_s) *result = NULL; | |
9039 | char *text = target_read_stralloc (¤t_target, | |
9040 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9041 | ||
9042 | if (text) | |
9043 | { | |
9044 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9045 | |
fd79ecee DJ |
9046 | result = parse_memory_map (text); |
9047 | do_cleanups (back_to); | |
9048 | } | |
9049 | ||
9050 | return result; | |
9051 | } | |
9052 | ||
c906108c | 9053 | static void |
fba45db2 | 9054 | packet_command (char *args, int from_tty) |
c906108c | 9055 | { |
d01949b6 | 9056 | struct remote_state *rs = get_remote_state (); |
c906108c | 9057 | |
5d93a237 | 9058 | if (!rs->remote_desc) |
8a3fe4f8 | 9059 | error (_("command can only be used with remote target")); |
c906108c | 9060 | |
c5aa993b | 9061 | if (!args) |
8a3fe4f8 | 9062 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9063 | |
9064 | puts_filtered ("sending: "); | |
9065 | print_packet (args); | |
9066 | puts_filtered ("\n"); | |
9067 | putpkt (args); | |
9068 | ||
6d820c5c | 9069 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9070 | puts_filtered ("received: "); |
6d820c5c | 9071 | print_packet (rs->buf); |
c906108c SS |
9072 | puts_filtered ("\n"); |
9073 | } | |
9074 | ||
9075 | #if 0 | |
23860348 | 9076 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9077 | |
a14ed312 | 9078 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9079 | |
a14ed312 | 9080 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9081 | |
a14ed312 | 9082 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9083 | |
a14ed312 | 9084 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9085 | |
23860348 | 9086 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9087 | |
a14ed312 | 9088 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9089 | |
23860348 | 9090 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9091 | |
a14ed312 | 9092 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9093 | |
a14ed312 | 9094 | static void init_remote_threadtests (void); |
c906108c | 9095 | |
23860348 | 9096 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9097 | |
9098 | static void | |
fba45db2 | 9099 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9100 | { |
9101 | int sample_thread = SAMPLE_THREAD; | |
9102 | ||
a3f17187 | 9103 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9104 | set_general_thread (sample_thread); |
c906108c SS |
9105 | } |
9106 | ||
9107 | ||
9108 | static void | |
fba45db2 | 9109 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9110 | { |
9111 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
9112 | int pid = ptid_get_pid (inferior_ptid); |
9113 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 9114 | |
79d7f229 | 9115 | if (remote_thread_alive (ptid)) |
c906108c SS |
9116 | printf_filtered ("PASS: Thread alive test\n"); |
9117 | else | |
9118 | printf_filtered ("FAIL: Thread alive test\n"); | |
9119 | } | |
9120 | ||
23860348 | 9121 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9122 | |
9123 | void | |
fba45db2 | 9124 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9125 | { |
9126 | char hexid[20]; | |
9127 | ||
23860348 | 9128 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9129 | hexid[16] = 0; |
9130 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9131 | } | |
9132 | ||
9133 | static void | |
fba45db2 | 9134 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9135 | { |
9136 | int startflag = 1; | |
9137 | threadref nextthread; | |
9138 | int done, result_count; | |
9139 | threadref threadlist[3]; | |
9140 | ||
9141 | printf_filtered ("Remote Threadlist test\n"); | |
9142 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9143 | &result_count, &threadlist[0])) | |
9144 | printf_filtered ("FAIL: threadlist test\n"); | |
9145 | else | |
9146 | { | |
9147 | threadref *scan = threadlist; | |
9148 | threadref *limit = scan + result_count; | |
9149 | ||
9150 | while (scan < limit) | |
9151 | output_threadid (" thread ", scan++); | |
9152 | } | |
9153 | } | |
9154 | ||
9155 | void | |
fba45db2 | 9156 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9157 | { |
9158 | output_threadid ("Threadid: ", &info->threadid); | |
9159 | printf_filtered ("Name: %s\n ", info->shortname); | |
9160 | printf_filtered ("State: %s\n", info->display); | |
9161 | printf_filtered ("other: %s\n\n", info->more_display); | |
9162 | } | |
9163 | ||
9164 | int | |
fba45db2 | 9165 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9166 | { |
9167 | int result; | |
9168 | int set; | |
9169 | struct gdb_ext_thread_info threadinfo; | |
9170 | ||
9171 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9172 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9173 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9174 | display_thread_info (&threadinfo); | |
9175 | return result; | |
9176 | } | |
9177 | ||
9178 | static void | |
fba45db2 | 9179 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9180 | { |
9181 | int athread = SAMPLE_THREAD; | |
9182 | threadref thread; | |
9183 | int set; | |
9184 | ||
9185 | int_to_threadref (&thread, athread); | |
9186 | printf_filtered ("Remote Threadinfo test\n"); | |
9187 | if (!get_and_display_threadinfo (&thread)) | |
9188 | printf_filtered ("FAIL cannot get thread info\n"); | |
9189 | } | |
9190 | ||
9191 | static int | |
fba45db2 | 9192 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9193 | { |
9194 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9195 | return get_and_display_threadinfo (ref); | |
9196 | } | |
9197 | ||
9198 | static void | |
fba45db2 | 9199 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9200 | { |
9201 | printf_filtered ("Remote Threadlist update test\n"); | |
9202 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9203 | } | |
9204 | ||
9205 | static void | |
9206 | init_remote_threadtests (void) | |
9207 | { | |
3e43a32a MS |
9208 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9209 | _("Fetch and print the remote list of " | |
9210 | "thread identifiers, one pkt only")); | |
c906108c | 9211 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9212 | _("Fetch and display info about one thread")); |
c906108c | 9213 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9214 | _("Test setting to a different thread")); |
c906108c | 9215 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9216 | _("Iterate through updating all remote thread info")); |
c906108c | 9217 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9218 | _(" Remote thread alive test ")); |
c906108c SS |
9219 | } |
9220 | ||
9221 | #endif /* 0 */ | |
9222 | ||
f3fb8c85 MS |
9223 | /* Convert a thread ID to a string. Returns the string in a static |
9224 | buffer. */ | |
9225 | ||
9226 | static char * | |
117de6a9 | 9227 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9228 | { |
79d7f229 | 9229 | static char buf[64]; |
82f73884 | 9230 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9231 | |
7cee1e54 PA |
9232 | if (ptid_equal (ptid, null_ptid)) |
9233 | return normal_pid_to_str (ptid); | |
9234 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9235 | { |
9236 | /* Printing an inferior target id. */ | |
9237 | ||
9238 | /* When multi-process extensions are off, there's no way in the | |
9239 | remote protocol to know the remote process id, if there's any | |
9240 | at all. There's one exception --- when we're connected with | |
9241 | target extended-remote, and we manually attached to a process | |
9242 | with "attach PID". We don't record anywhere a flag that | |
9243 | allows us to distinguish that case from the case of | |
9244 | connecting with extended-remote and the stub already being | |
9245 | attached to a process, and reporting yes to qAttached, hence | |
9246 | no smart special casing here. */ | |
9247 | if (!remote_multi_process_p (rs)) | |
9248 | { | |
9249 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9250 | return buf; | |
9251 | } | |
9252 | ||
9253 | return normal_pid_to_str (ptid); | |
82f73884 | 9254 | } |
ecd0ada5 | 9255 | else |
79d7f229 | 9256 | { |
ecd0ada5 PA |
9257 | if (ptid_equal (magic_null_ptid, ptid)) |
9258 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9259 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9260 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9261 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9262 | else | |
9263 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9264 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9265 | return buf; |
9266 | } | |
f3fb8c85 MS |
9267 | } |
9268 | ||
38691318 KB |
9269 | /* Get the address of the thread local variable in OBJFILE which is |
9270 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9271 | ||
9272 | static CORE_ADDR | |
117de6a9 PA |
9273 | remote_get_thread_local_address (struct target_ops *ops, |
9274 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9275 | { |
444abaca | 9276 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9277 | { |
9278 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9279 | char *p = rs->buf; |
82f73884 | 9280 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9281 | enum packet_result result; |
38691318 KB |
9282 | |
9283 | strcpy (p, "qGetTLSAddr:"); | |
9284 | p += strlen (p); | |
82f73884 | 9285 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9286 | *p++ = ','; |
9287 | p += hexnumstr (p, offset); | |
9288 | *p++ = ','; | |
9289 | p += hexnumstr (p, lm); | |
9290 | *p++ = '\0'; | |
9291 | ||
6d820c5c DJ |
9292 | putpkt (rs->buf); |
9293 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9294 | result = packet_ok (rs->buf, |
9295 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9296 | if (result == PACKET_OK) |
38691318 KB |
9297 | { |
9298 | ULONGEST result; | |
9299 | ||
6d820c5c | 9300 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9301 | return result; |
9302 | } | |
571dd617 | 9303 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9304 | throw_error (TLS_GENERIC_ERROR, |
9305 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9306 | else |
109c3e39 AC |
9307 | throw_error (TLS_GENERIC_ERROR, |
9308 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9309 | } |
9310 | else | |
109c3e39 AC |
9311 | throw_error (TLS_GENERIC_ERROR, |
9312 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9313 | /* Not reached. */ |
9314 | return 0; | |
9315 | } | |
9316 | ||
711e434b PM |
9317 | /* Provide thread local base, i.e. Thread Information Block address. |
9318 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9319 | ||
70221824 | 9320 | static int |
711e434b PM |
9321 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9322 | { | |
9323 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9324 | { | |
9325 | struct remote_state *rs = get_remote_state (); | |
9326 | char *p = rs->buf; | |
9327 | char *endp = rs->buf + get_remote_packet_size (); | |
9328 | enum packet_result result; | |
9329 | ||
9330 | strcpy (p, "qGetTIBAddr:"); | |
9331 | p += strlen (p); | |
9332 | p = write_ptid (p, endp, ptid); | |
9333 | *p++ = '\0'; | |
9334 | ||
9335 | putpkt (rs->buf); | |
9336 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9337 | result = packet_ok (rs->buf, | |
9338 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9339 | if (result == PACKET_OK) | |
9340 | { | |
9341 | ULONGEST result; | |
9342 | ||
9343 | unpack_varlen_hex (rs->buf, &result); | |
9344 | if (addr) | |
9345 | *addr = (CORE_ADDR) result; | |
9346 | return 1; | |
9347 | } | |
9348 | else if (result == PACKET_UNKNOWN) | |
9349 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9350 | else | |
9351 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9352 | } | |
9353 | else | |
9354 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9355 | /* Not reached. */ | |
9356 | return 0; | |
9357 | } | |
9358 | ||
29709017 DJ |
9359 | /* Support for inferring a target description based on the current |
9360 | architecture and the size of a 'g' packet. While the 'g' packet | |
9361 | can have any size (since optional registers can be left off the | |
9362 | end), some sizes are easily recognizable given knowledge of the | |
9363 | approximate architecture. */ | |
9364 | ||
9365 | struct remote_g_packet_guess | |
9366 | { | |
9367 | int bytes; | |
9368 | const struct target_desc *tdesc; | |
9369 | }; | |
9370 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9371 | DEF_VEC_O(remote_g_packet_guess_s); | |
9372 | ||
9373 | struct remote_g_packet_data | |
9374 | { | |
9375 | VEC(remote_g_packet_guess_s) *guesses; | |
9376 | }; | |
9377 | ||
9378 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9379 | ||
9380 | static void * | |
9381 | remote_g_packet_data_init (struct obstack *obstack) | |
9382 | { | |
9383 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9384 | } | |
9385 | ||
9386 | void | |
9387 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9388 | const struct target_desc *tdesc) | |
9389 | { | |
9390 | struct remote_g_packet_data *data | |
9391 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9392 | struct remote_g_packet_guess new_guess, *guess; | |
9393 | int ix; | |
9394 | ||
9395 | gdb_assert (tdesc != NULL); | |
9396 | ||
9397 | for (ix = 0; | |
9398 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9399 | ix++) | |
9400 | if (guess->bytes == bytes) | |
9401 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9402 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9403 | bytes); |
9404 | ||
9405 | new_guess.bytes = bytes; | |
9406 | new_guess.tdesc = tdesc; | |
9407 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9408 | } | |
9409 | ||
d962ef82 DJ |
9410 | /* Return 1 if remote_read_description would do anything on this target |
9411 | and architecture, 0 otherwise. */ | |
9412 | ||
9413 | static int | |
9414 | remote_read_description_p (struct target_ops *target) | |
9415 | { | |
9416 | struct remote_g_packet_data *data | |
f5656ead | 9417 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9418 | |
9419 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9420 | return 1; | |
9421 | ||
9422 | return 0; | |
9423 | } | |
9424 | ||
29709017 DJ |
9425 | static const struct target_desc * |
9426 | remote_read_description (struct target_ops *target) | |
9427 | { | |
9428 | struct remote_g_packet_data *data | |
f5656ead | 9429 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9430 | |
d962ef82 DJ |
9431 | /* Do not try this during initial connection, when we do not know |
9432 | whether there is a running but stopped thread. */ | |
9433 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9434 | return NULL; | |
9435 | ||
29709017 DJ |
9436 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9437 | { | |
9438 | struct remote_g_packet_guess *guess; | |
9439 | int ix; | |
9440 | int bytes = send_g_packet (); | |
9441 | ||
9442 | for (ix = 0; | |
9443 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9444 | ix++) | |
9445 | if (guess->bytes == bytes) | |
9446 | return guess->tdesc; | |
9447 | ||
9448 | /* We discard the g packet. A minor optimization would be to | |
9449 | hold on to it, and fill the register cache once we have selected | |
9450 | an architecture, but it's too tricky to do safely. */ | |
9451 | } | |
9452 | ||
9453 | return NULL; | |
9454 | } | |
9455 | ||
a6b151f1 DJ |
9456 | /* Remote file transfer support. This is host-initiated I/O, not |
9457 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9458 | ||
9459 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9460 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9461 | decrease *LEFT. Otherwise raise an error. */ | |
9462 | ||
9463 | static void | |
9464 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9465 | { | |
9466 | int len = strlen (string); | |
9467 | ||
9468 | if (len > *left) | |
9469 | error (_("Packet too long for target.")); | |
9470 | ||
9471 | memcpy (*buffer, string, len); | |
9472 | *buffer += len; | |
9473 | *left -= len; | |
9474 | ||
9475 | /* NUL-terminate the buffer as a convenience, if there is | |
9476 | room. */ | |
9477 | if (*left) | |
9478 | **buffer = '\0'; | |
9479 | } | |
9480 | ||
9481 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9482 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9483 | decrease *LEFT. Otherwise raise an error. */ | |
9484 | ||
9485 | static void | |
9486 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9487 | int len) | |
9488 | { | |
9489 | if (2 * len > *left) | |
9490 | error (_("Packet too long for target.")); | |
9491 | ||
9492 | bin2hex (bytes, *buffer, len); | |
9493 | *buffer += 2 * len; | |
9494 | *left -= 2 * len; | |
9495 | ||
9496 | /* NUL-terminate the buffer as a convenience, if there is | |
9497 | room. */ | |
9498 | if (*left) | |
9499 | **buffer = '\0'; | |
9500 | } | |
9501 | ||
9502 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9503 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9504 | decrease *LEFT. Otherwise raise an error. */ | |
9505 | ||
9506 | static void | |
9507 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9508 | { | |
9509 | int len = hexnumlen (value); | |
9510 | ||
9511 | if (len > *left) | |
9512 | error (_("Packet too long for target.")); | |
9513 | ||
9514 | hexnumstr (*buffer, value); | |
9515 | *buffer += len; | |
9516 | *left -= len; | |
9517 | ||
9518 | /* NUL-terminate the buffer as a convenience, if there is | |
9519 | room. */ | |
9520 | if (*left) | |
9521 | **buffer = '\0'; | |
9522 | } | |
9523 | ||
9524 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9525 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9526 | was included, and *ATTACHMENT to point to the start of the annex | |
9527 | if any. The length of the packet isn't needed here; there may | |
9528 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9529 | ||
9530 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9531 | -1 is returned, the other variables may not be initialized. */ | |
9532 | ||
9533 | static int | |
9534 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9535 | int *remote_errno, char **attachment) | |
9536 | { | |
9537 | char *p, *p2; | |
9538 | ||
9539 | *remote_errno = 0; | |
9540 | *attachment = NULL; | |
9541 | ||
9542 | if (buffer[0] != 'F') | |
9543 | return -1; | |
9544 | ||
9545 | errno = 0; | |
9546 | *retcode = strtol (&buffer[1], &p, 16); | |
9547 | if (errno != 0 || p == &buffer[1]) | |
9548 | return -1; | |
9549 | ||
9550 | /* Check for ",errno". */ | |
9551 | if (*p == ',') | |
9552 | { | |
9553 | errno = 0; | |
9554 | *remote_errno = strtol (p + 1, &p2, 16); | |
9555 | if (errno != 0 || p + 1 == p2) | |
9556 | return -1; | |
9557 | p = p2; | |
9558 | } | |
9559 | ||
9560 | /* Check for ";attachment". If there is no attachment, the | |
9561 | packet should end here. */ | |
9562 | if (*p == ';') | |
9563 | { | |
9564 | *attachment = p + 1; | |
9565 | return 0; | |
9566 | } | |
9567 | else if (*p == '\0') | |
9568 | return 0; | |
9569 | else | |
9570 | return -1; | |
9571 | } | |
9572 | ||
9573 | /* Send a prepared I/O packet to the target and read its response. | |
9574 | The prepared packet is in the global RS->BUF before this function | |
9575 | is called, and the answer is there when we return. | |
9576 | ||
9577 | COMMAND_BYTES is the length of the request to send, which may include | |
9578 | binary data. WHICH_PACKET is the packet configuration to check | |
9579 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9580 | is set to the error number and -1 is returned. Otherwise the value | |
9581 | returned by the function is returned. | |
9582 | ||
9583 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9584 | attachment is expected; an error will be reported if there's a | |
9585 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9586 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9587 | attachment's length. */ | |
9588 | ||
9589 | static int | |
9590 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9591 | int *remote_errno, char **attachment, | |
9592 | int *attachment_len) | |
9593 | { | |
9594 | struct remote_state *rs = get_remote_state (); | |
9595 | int ret, bytes_read; | |
9596 | char *attachment_tmp; | |
9597 | ||
5d93a237 | 9598 | if (!rs->remote_desc |
f1838a98 | 9599 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) |
a6b151f1 DJ |
9600 | { |
9601 | *remote_errno = FILEIO_ENOSYS; | |
9602 | return -1; | |
9603 | } | |
9604 | ||
9605 | putpkt_binary (rs->buf, command_bytes); | |
9606 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9607 | ||
9608 | /* If it timed out, something is wrong. Don't try to parse the | |
9609 | buffer. */ | |
9610 | if (bytes_read < 0) | |
9611 | { | |
9612 | *remote_errno = FILEIO_EINVAL; | |
9613 | return -1; | |
9614 | } | |
9615 | ||
9616 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9617 | { | |
9618 | case PACKET_ERROR: | |
9619 | *remote_errno = FILEIO_EINVAL; | |
9620 | return -1; | |
9621 | case PACKET_UNKNOWN: | |
9622 | *remote_errno = FILEIO_ENOSYS; | |
9623 | return -1; | |
9624 | case PACKET_OK: | |
9625 | break; | |
9626 | } | |
9627 | ||
9628 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9629 | &attachment_tmp)) | |
9630 | { | |
9631 | *remote_errno = FILEIO_EINVAL; | |
9632 | return -1; | |
9633 | } | |
9634 | ||
9635 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9636 | if ((attachment_tmp == NULL && attachment != NULL) | |
9637 | || (attachment_tmp != NULL && attachment == NULL)) | |
9638 | { | |
9639 | *remote_errno = FILEIO_EINVAL; | |
9640 | return -1; | |
9641 | } | |
9642 | ||
9643 | /* If an attachment was found, it must point into the packet buffer; | |
9644 | work out how many bytes there were. */ | |
9645 | if (attachment_tmp != NULL) | |
9646 | { | |
9647 | *attachment = attachment_tmp; | |
9648 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9649 | } | |
9650 | ||
9651 | return ret; | |
9652 | } | |
9653 | ||
9654 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9655 | remote file descriptor, or -1 if an error occurs (and set | |
9656 | *REMOTE_ERRNO). */ | |
9657 | ||
9658 | static int | |
cd897586 TT |
9659 | remote_hostio_open (struct target_ops *self, |
9660 | const char *filename, int flags, int mode, | |
a6b151f1 DJ |
9661 | int *remote_errno) |
9662 | { | |
9663 | struct remote_state *rs = get_remote_state (); | |
9664 | char *p = rs->buf; | |
9665 | int left = get_remote_packet_size () - 1; | |
9666 | ||
9667 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9668 | ||
9669 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9670 | strlen (filename)); | |
9671 | remote_buffer_add_string (&p, &left, ","); | |
9672 | ||
9673 | remote_buffer_add_int (&p, &left, flags); | |
9674 | remote_buffer_add_string (&p, &left, ","); | |
9675 | ||
9676 | remote_buffer_add_int (&p, &left, mode); | |
9677 | ||
9678 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9679 | remote_errno, NULL, NULL); | |
9680 | } | |
9681 | ||
9682 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9683 | Return the number of bytes written, or -1 if an error occurs (and | |
9684 | set *REMOTE_ERRNO). */ | |
9685 | ||
9686 | static int | |
0d866f62 TT |
9687 | remote_hostio_pwrite (struct target_ops *self, |
9688 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
9689 | ULONGEST offset, int *remote_errno) |
9690 | { | |
9691 | struct remote_state *rs = get_remote_state (); | |
9692 | char *p = rs->buf; | |
9693 | int left = get_remote_packet_size (); | |
9694 | int out_len; | |
9695 | ||
9696 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9697 | ||
9698 | remote_buffer_add_int (&p, &left, fd); | |
9699 | remote_buffer_add_string (&p, &left, ","); | |
9700 | ||
9701 | remote_buffer_add_int (&p, &left, offset); | |
9702 | remote_buffer_add_string (&p, &left, ","); | |
9703 | ||
bc20a4af | 9704 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9705 | get_remote_packet_size () - (p - rs->buf)); |
9706 | ||
9707 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9708 | remote_errno, NULL, NULL); | |
9709 | } | |
9710 | ||
9711 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9712 | Return the number of bytes read, or -1 if an error occurs (and | |
9713 | set *REMOTE_ERRNO). */ | |
9714 | ||
9715 | static int | |
a3be983c TT |
9716 | remote_hostio_pread (struct target_ops *self, |
9717 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
9718 | ULONGEST offset, int *remote_errno) |
9719 | { | |
9720 | struct remote_state *rs = get_remote_state (); | |
9721 | char *p = rs->buf; | |
9722 | char *attachment; | |
9723 | int left = get_remote_packet_size (); | |
9724 | int ret, attachment_len; | |
9725 | int read_len; | |
9726 | ||
9727 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9728 | ||
9729 | remote_buffer_add_int (&p, &left, fd); | |
9730 | remote_buffer_add_string (&p, &left, ","); | |
9731 | ||
9732 | remote_buffer_add_int (&p, &left, len); | |
9733 | remote_buffer_add_string (&p, &left, ","); | |
9734 | ||
9735 | remote_buffer_add_int (&p, &left, offset); | |
9736 | ||
9737 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9738 | remote_errno, &attachment, | |
9739 | &attachment_len); | |
9740 | ||
9741 | if (ret < 0) | |
9742 | return ret; | |
9743 | ||
bc20a4af | 9744 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9745 | read_buf, len); |
9746 | if (read_len != ret) | |
9747 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9748 | ||
9749 | return ret; | |
9750 | } | |
9751 | ||
9752 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9753 | (and set *REMOTE_ERRNO). */ | |
9754 | ||
9755 | static int | |
df39ea25 | 9756 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
9757 | { |
9758 | struct remote_state *rs = get_remote_state (); | |
9759 | char *p = rs->buf; | |
9760 | int left = get_remote_packet_size () - 1; | |
9761 | ||
9762 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9763 | ||
9764 | remote_buffer_add_int (&p, &left, fd); | |
9765 | ||
9766 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9767 | remote_errno, NULL, NULL); | |
9768 | } | |
9769 | ||
9770 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9771 | occurs (and set *REMOTE_ERRNO). */ | |
9772 | ||
9773 | static int | |
dbbca37d TT |
9774 | remote_hostio_unlink (struct target_ops *self, |
9775 | const char *filename, int *remote_errno) | |
a6b151f1 DJ |
9776 | { |
9777 | struct remote_state *rs = get_remote_state (); | |
9778 | char *p = rs->buf; | |
9779 | int left = get_remote_packet_size () - 1; | |
9780 | ||
9781 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9782 | ||
9783 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9784 | strlen (filename)); | |
9785 | ||
9786 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9787 | remote_errno, NULL, NULL); | |
9788 | } | |
9789 | ||
b9e7b9c3 UW |
9790 | /* Read value of symbolic link FILENAME on the remote target. Return |
9791 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9792 | occurs (and set *REMOTE_ERRNO). */ | |
9793 | ||
9794 | static char * | |
fab5aa7c TT |
9795 | remote_hostio_readlink (struct target_ops *self, |
9796 | const char *filename, int *remote_errno) | |
b9e7b9c3 UW |
9797 | { |
9798 | struct remote_state *rs = get_remote_state (); | |
9799 | char *p = rs->buf; | |
9800 | char *attachment; | |
9801 | int left = get_remote_packet_size (); | |
9802 | int len, attachment_len; | |
9803 | int read_len; | |
9804 | char *ret; | |
9805 | ||
9806 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9807 | ||
9808 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9809 | strlen (filename)); | |
9810 | ||
9811 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9812 | remote_errno, &attachment, | |
9813 | &attachment_len); | |
9814 | ||
9815 | if (len < 0) | |
9816 | return NULL; | |
9817 | ||
9818 | ret = xmalloc (len + 1); | |
9819 | ||
bc20a4af PA |
9820 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
9821 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
9822 | if (read_len != len) |
9823 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9824 | ||
9825 | ret[len] = '\0'; | |
9826 | return ret; | |
9827 | } | |
9828 | ||
a6b151f1 DJ |
9829 | static int |
9830 | remote_fileio_errno_to_host (int errnum) | |
9831 | { | |
9832 | switch (errnum) | |
9833 | { | |
9834 | case FILEIO_EPERM: | |
9835 | return EPERM; | |
9836 | case FILEIO_ENOENT: | |
9837 | return ENOENT; | |
9838 | case FILEIO_EINTR: | |
9839 | return EINTR; | |
9840 | case FILEIO_EIO: | |
9841 | return EIO; | |
9842 | case FILEIO_EBADF: | |
9843 | return EBADF; | |
9844 | case FILEIO_EACCES: | |
9845 | return EACCES; | |
9846 | case FILEIO_EFAULT: | |
9847 | return EFAULT; | |
9848 | case FILEIO_EBUSY: | |
9849 | return EBUSY; | |
9850 | case FILEIO_EEXIST: | |
9851 | return EEXIST; | |
9852 | case FILEIO_ENODEV: | |
9853 | return ENODEV; | |
9854 | case FILEIO_ENOTDIR: | |
9855 | return ENOTDIR; | |
9856 | case FILEIO_EISDIR: | |
9857 | return EISDIR; | |
9858 | case FILEIO_EINVAL: | |
9859 | return EINVAL; | |
9860 | case FILEIO_ENFILE: | |
9861 | return ENFILE; | |
9862 | case FILEIO_EMFILE: | |
9863 | return EMFILE; | |
9864 | case FILEIO_EFBIG: | |
9865 | return EFBIG; | |
9866 | case FILEIO_ENOSPC: | |
9867 | return ENOSPC; | |
9868 | case FILEIO_ESPIPE: | |
9869 | return ESPIPE; | |
9870 | case FILEIO_EROFS: | |
9871 | return EROFS; | |
9872 | case FILEIO_ENOSYS: | |
9873 | return ENOSYS; | |
9874 | case FILEIO_ENAMETOOLONG: | |
9875 | return ENAMETOOLONG; | |
9876 | } | |
9877 | return -1; | |
9878 | } | |
9879 | ||
9880 | static char * | |
9881 | remote_hostio_error (int errnum) | |
9882 | { | |
9883 | int host_error = remote_fileio_errno_to_host (errnum); | |
9884 | ||
9885 | if (host_error == -1) | |
9886 | error (_("Unknown remote I/O error %d"), errnum); | |
9887 | else | |
9888 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9889 | } | |
9890 | ||
a6b151f1 DJ |
9891 | static void |
9892 | remote_hostio_close_cleanup (void *opaque) | |
9893 | { | |
9894 | int fd = *(int *) opaque; | |
9895 | int remote_errno; | |
9896 | ||
df39ea25 | 9897 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
9898 | } |
9899 | ||
f1838a98 UW |
9900 | |
9901 | static void * | |
9902 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9903 | { | |
9904 | const char *filename = bfd_get_filename (abfd); | |
9905 | int fd, remote_errno; | |
9906 | int *stream; | |
9907 | ||
9908 | gdb_assert (remote_filename_p (filename)); | |
9909 | ||
cd897586 TT |
9910 | fd = remote_hostio_open (find_target_at (process_stratum), |
9911 | filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
f1838a98 UW |
9912 | if (fd == -1) |
9913 | { | |
9914 | errno = remote_fileio_errno_to_host (remote_errno); | |
9915 | bfd_set_error (bfd_error_system_call); | |
9916 | return NULL; | |
9917 | } | |
9918 | ||
9919 | stream = xmalloc (sizeof (int)); | |
9920 | *stream = fd; | |
9921 | return stream; | |
9922 | } | |
9923 | ||
9924 | static int | |
9925 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9926 | { | |
9927 | int fd = *(int *)stream; | |
9928 | int remote_errno; | |
9929 | ||
9930 | xfree (stream); | |
9931 | ||
9932 | /* Ignore errors on close; these may happen if the remote | |
9933 | connection was already torn down. */ | |
df39ea25 | 9934 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
f1838a98 | 9935 | |
39ed5604 JK |
9936 | /* Zero means success. */ |
9937 | return 0; | |
f1838a98 UW |
9938 | } |
9939 | ||
9940 | static file_ptr | |
9941 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9942 | file_ptr nbytes, file_ptr offset) | |
9943 | { | |
9944 | int fd = *(int *)stream; | |
9945 | int remote_errno; | |
9946 | file_ptr pos, bytes; | |
9947 | ||
9948 | pos = 0; | |
9949 | while (nbytes > pos) | |
9950 | { | |
a3be983c TT |
9951 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
9952 | fd, (gdb_byte *) buf + pos, nbytes - pos, | |
f1838a98 UW |
9953 | offset + pos, &remote_errno); |
9954 | if (bytes == 0) | |
9955 | /* Success, but no bytes, means end-of-file. */ | |
9956 | break; | |
9957 | if (bytes == -1) | |
9958 | { | |
9959 | errno = remote_fileio_errno_to_host (remote_errno); | |
9960 | bfd_set_error (bfd_error_system_call); | |
9961 | return -1; | |
9962 | } | |
9963 | ||
9964 | pos += bytes; | |
9965 | } | |
9966 | ||
9967 | return pos; | |
9968 | } | |
9969 | ||
9970 | static int | |
9971 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9972 | { | |
9973 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9974 | sb->st_size = INT_MAX; | |
9975 | return 0; | |
9976 | } | |
9977 | ||
9978 | int | |
9979 | remote_filename_p (const char *filename) | |
9980 | { | |
3736004f PA |
9981 | return strncmp (filename, |
9982 | REMOTE_SYSROOT_PREFIX, | |
9983 | sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0; | |
f1838a98 UW |
9984 | } |
9985 | ||
9986 | bfd * | |
9987 | remote_bfd_open (const char *remote_file, const char *target) | |
9988 | { | |
64c31149 TT |
9989 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
9990 | remote_bfd_iovec_open, NULL, | |
9991 | remote_bfd_iovec_pread, | |
9992 | remote_bfd_iovec_close, | |
9993 | remote_bfd_iovec_stat); | |
9994 | ||
a4453b7e | 9995 | return abfd; |
f1838a98 UW |
9996 | } |
9997 | ||
a6b151f1 DJ |
9998 | void |
9999 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10000 | { | |
10001 | struct cleanup *back_to, *close_cleanup; | |
10002 | int retcode, fd, remote_errno, bytes, io_size; | |
10003 | FILE *file; | |
10004 | gdb_byte *buffer; | |
10005 | int bytes_in_buffer; | |
10006 | int saw_eof; | |
10007 | ULONGEST offset; | |
5d93a237 | 10008 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10009 | |
5d93a237 | 10010 | if (!rs->remote_desc) |
a6b151f1 DJ |
10011 | error (_("command can only be used with remote target")); |
10012 | ||
614c279d | 10013 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10014 | if (file == NULL) |
10015 | perror_with_name (local_file); | |
7c8a8b04 | 10016 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10017 | |
cd897586 TT |
10018 | fd = remote_hostio_open (find_target_at (process_stratum), |
10019 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
a6b151f1 DJ |
10020 | | FILEIO_O_TRUNC), |
10021 | 0700, &remote_errno); | |
10022 | if (fd == -1) | |
10023 | remote_hostio_error (remote_errno); | |
10024 | ||
10025 | /* Send up to this many bytes at once. They won't all fit in the | |
10026 | remote packet limit, so we'll transfer slightly fewer. */ | |
10027 | io_size = get_remote_packet_size (); | |
10028 | buffer = xmalloc (io_size); | |
10029 | make_cleanup (xfree, buffer); | |
10030 | ||
10031 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10032 | ||
10033 | bytes_in_buffer = 0; | |
10034 | saw_eof = 0; | |
10035 | offset = 0; | |
10036 | while (bytes_in_buffer || !saw_eof) | |
10037 | { | |
10038 | if (!saw_eof) | |
10039 | { | |
3e43a32a MS |
10040 | bytes = fread (buffer + bytes_in_buffer, 1, |
10041 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10042 | file); |
10043 | if (bytes == 0) | |
10044 | { | |
10045 | if (ferror (file)) | |
10046 | error (_("Error reading %s."), local_file); | |
10047 | else | |
10048 | { | |
10049 | /* EOF. Unless there is something still in the | |
10050 | buffer from the last iteration, we are done. */ | |
10051 | saw_eof = 1; | |
10052 | if (bytes_in_buffer == 0) | |
10053 | break; | |
10054 | } | |
10055 | } | |
10056 | } | |
10057 | else | |
10058 | bytes = 0; | |
10059 | ||
10060 | bytes += bytes_in_buffer; | |
10061 | bytes_in_buffer = 0; | |
10062 | ||
0d866f62 TT |
10063 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10064 | fd, buffer, bytes, | |
3e43a32a | 10065 | offset, &remote_errno); |
a6b151f1 DJ |
10066 | |
10067 | if (retcode < 0) | |
10068 | remote_hostio_error (remote_errno); | |
10069 | else if (retcode == 0) | |
10070 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10071 | else if (retcode < bytes) | |
10072 | { | |
10073 | /* Short write. Save the rest of the read data for the next | |
10074 | write. */ | |
10075 | bytes_in_buffer = bytes - retcode; | |
10076 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10077 | } | |
10078 | ||
10079 | offset += retcode; | |
10080 | } | |
10081 | ||
10082 | discard_cleanups (close_cleanup); | |
df39ea25 | 10083 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10084 | remote_hostio_error (remote_errno); |
10085 | ||
10086 | if (from_tty) | |
10087 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10088 | do_cleanups (back_to); | |
10089 | } | |
10090 | ||
10091 | void | |
10092 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10093 | { | |
10094 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10095 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10096 | FILE *file; |
10097 | gdb_byte *buffer; | |
10098 | ULONGEST offset; | |
5d93a237 | 10099 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10100 | |
5d93a237 | 10101 | if (!rs->remote_desc) |
a6b151f1 DJ |
10102 | error (_("command can only be used with remote target")); |
10103 | ||
cd897586 TT |
10104 | fd = remote_hostio_open (find_target_at (process_stratum), |
10105 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
a6b151f1 DJ |
10106 | if (fd == -1) |
10107 | remote_hostio_error (remote_errno); | |
10108 | ||
614c279d | 10109 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10110 | if (file == NULL) |
10111 | perror_with_name (local_file); | |
7c8a8b04 | 10112 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10113 | |
10114 | /* Send up to this many bytes at once. They won't all fit in the | |
10115 | remote packet limit, so we'll transfer slightly fewer. */ | |
10116 | io_size = get_remote_packet_size (); | |
10117 | buffer = xmalloc (io_size); | |
10118 | make_cleanup (xfree, buffer); | |
10119 | ||
10120 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10121 | ||
10122 | offset = 0; | |
10123 | while (1) | |
10124 | { | |
a3be983c TT |
10125 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10126 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10127 | if (bytes == 0) |
10128 | /* Success, but no bytes, means end-of-file. */ | |
10129 | break; | |
10130 | if (bytes == -1) | |
10131 | remote_hostio_error (remote_errno); | |
10132 | ||
10133 | offset += bytes; | |
10134 | ||
10135 | bytes = fwrite (buffer, 1, bytes, file); | |
10136 | if (bytes == 0) | |
10137 | perror_with_name (local_file); | |
10138 | } | |
10139 | ||
10140 | discard_cleanups (close_cleanup); | |
df39ea25 | 10141 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10142 | remote_hostio_error (remote_errno); |
10143 | ||
10144 | if (from_tty) | |
10145 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10146 | do_cleanups (back_to); | |
10147 | } | |
10148 | ||
10149 | void | |
10150 | remote_file_delete (const char *remote_file, int from_tty) | |
10151 | { | |
10152 | int retcode, remote_errno; | |
5d93a237 | 10153 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10154 | |
5d93a237 | 10155 | if (!rs->remote_desc) |
a6b151f1 DJ |
10156 | error (_("command can only be used with remote target")); |
10157 | ||
dbbca37d TT |
10158 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
10159 | remote_file, &remote_errno); | |
a6b151f1 DJ |
10160 | if (retcode == -1) |
10161 | remote_hostio_error (remote_errno); | |
10162 | ||
10163 | if (from_tty) | |
10164 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10165 | } | |
10166 | ||
10167 | static void | |
10168 | remote_put_command (char *args, int from_tty) | |
10169 | { | |
10170 | struct cleanup *back_to; | |
10171 | char **argv; | |
10172 | ||
d1a41061 PP |
10173 | if (args == NULL) |
10174 | error_no_arg (_("file to put")); | |
10175 | ||
10176 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10177 | back_to = make_cleanup_freeargv (argv); |
10178 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10179 | error (_("Invalid parameters to remote put")); | |
10180 | ||
10181 | remote_file_put (argv[0], argv[1], from_tty); | |
10182 | ||
10183 | do_cleanups (back_to); | |
10184 | } | |
10185 | ||
10186 | static void | |
10187 | remote_get_command (char *args, int from_tty) | |
10188 | { | |
10189 | struct cleanup *back_to; | |
10190 | char **argv; | |
10191 | ||
d1a41061 PP |
10192 | if (args == NULL) |
10193 | error_no_arg (_("file to get")); | |
10194 | ||
10195 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10196 | back_to = make_cleanup_freeargv (argv); |
10197 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10198 | error (_("Invalid parameters to remote get")); | |
10199 | ||
10200 | remote_file_get (argv[0], argv[1], from_tty); | |
10201 | ||
10202 | do_cleanups (back_to); | |
10203 | } | |
10204 | ||
10205 | static void | |
10206 | remote_delete_command (char *args, int from_tty) | |
10207 | { | |
10208 | struct cleanup *back_to; | |
10209 | char **argv; | |
10210 | ||
d1a41061 PP |
10211 | if (args == NULL) |
10212 | error_no_arg (_("file to delete")); | |
10213 | ||
10214 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10215 | back_to = make_cleanup_freeargv (argv); |
10216 | if (argv[0] == NULL || argv[1] != NULL) | |
10217 | error (_("Invalid parameters to remote delete")); | |
10218 | ||
10219 | remote_file_delete (argv[0], from_tty); | |
10220 | ||
10221 | do_cleanups (back_to); | |
10222 | } | |
10223 | ||
10224 | static void | |
10225 | remote_command (char *args, int from_tty) | |
10226 | { | |
10227 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10228 | } | |
10229 | ||
b2175913 | 10230 | static int |
19db3e69 | 10231 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10232 | { |
40ab02ce MS |
10233 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10234 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10235 | return 1; | |
10236 | else | |
10237 | return 0; | |
b2175913 MS |
10238 | } |
10239 | ||
74531fed | 10240 | static int |
2a9a2795 | 10241 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10242 | { |
10243 | return 1; | |
10244 | } | |
10245 | ||
03583c20 | 10246 | static int |
2bfc0540 | 10247 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10248 | { |
10249 | /* Only supported in extended mode. */ | |
10250 | return 0; | |
10251 | } | |
10252 | ||
8a305172 | 10253 | static int |
86ce2668 | 10254 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10255 | { |
10256 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10257 | |
901f9912 UW |
10258 | /* Only extended-remote handles being attached to multiple |
10259 | processes, even though plain remote can use the multi-process | |
10260 | thread id extensions, so that GDB knows the target process's | |
10261 | PID. */ | |
10262 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10263 | } |
10264 | ||
70221824 | 10265 | static int |
782b2b07 SS |
10266 | remote_supports_cond_tracepoints (void) |
10267 | { | |
10268 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10269 | |
782b2b07 SS |
10270 | return rs->cond_tracepoints; |
10271 | } | |
10272 | ||
3788aec7 | 10273 | static int |
efcc2da7 | 10274 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 LM |
10275 | { |
10276 | struct remote_state *rs = get_remote_state (); | |
10277 | ||
10278 | return rs->cond_breakpoints; | |
10279 | } | |
10280 | ||
70221824 | 10281 | static int |
7a697b8d SS |
10282 | remote_supports_fast_tracepoints (void) |
10283 | { | |
10284 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10285 | |
7a697b8d SS |
10286 | return rs->fast_tracepoints; |
10287 | } | |
10288 | ||
0fb4aa4b PA |
10289 | static int |
10290 | remote_supports_static_tracepoints (void) | |
10291 | { | |
10292 | struct remote_state *rs = get_remote_state (); | |
10293 | ||
10294 | return rs->static_tracepoints; | |
10295 | } | |
10296 | ||
1e4d1764 YQ |
10297 | static int |
10298 | remote_supports_install_in_trace (void) | |
10299 | { | |
10300 | struct remote_state *rs = get_remote_state (); | |
10301 | ||
10302 | return rs->install_in_trace; | |
10303 | } | |
10304 | ||
d248b706 | 10305 | static int |
7d178d6a | 10306 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 KY |
10307 | { |
10308 | struct remote_state *rs = get_remote_state (); | |
10309 | ||
10310 | return rs->enable_disable_tracepoints; | |
10311 | } | |
10312 | ||
3065dfb6 | 10313 | static int |
6de37a3a | 10314 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 SS |
10315 | { |
10316 | struct remote_state *rs = get_remote_state (); | |
10317 | ||
10318 | return rs->string_tracing; | |
10319 | } | |
10320 | ||
d3ce09f5 | 10321 | static int |
78eff0ec | 10322 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 SS |
10323 | { |
10324 | struct remote_state *rs = get_remote_state (); | |
10325 | ||
10326 | return rs->breakpoint_commands; | |
10327 | } | |
10328 | ||
35b1e5cc | 10329 | static void |
ecae04e1 | 10330 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
10331 | { |
10332 | putpkt ("QTinit"); | |
10333 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10334 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10335 | error (_("Target does not support this command.")); |
10336 | } | |
10337 | ||
10338 | static void free_actions_list (char **actions_list); | |
10339 | static void free_actions_list_cleanup_wrapper (void *); | |
10340 | static void | |
10341 | free_actions_list_cleanup_wrapper (void *al) | |
10342 | { | |
10343 | free_actions_list (al); | |
10344 | } | |
10345 | ||
10346 | static void | |
10347 | free_actions_list (char **actions_list) | |
10348 | { | |
10349 | int ndx; | |
10350 | ||
10351 | if (actions_list == 0) | |
10352 | return; | |
10353 | ||
10354 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10355 | xfree (actions_list[ndx]); | |
10356 | ||
10357 | xfree (actions_list); | |
10358 | } | |
10359 | ||
409873ef SS |
10360 | /* Recursive routine to walk through command list including loops, and |
10361 | download packets for each command. */ | |
10362 | ||
10363 | static void | |
10364 | remote_download_command_source (int num, ULONGEST addr, | |
10365 | struct command_line *cmds) | |
10366 | { | |
10367 | struct remote_state *rs = get_remote_state (); | |
10368 | struct command_line *cmd; | |
10369 | ||
10370 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10371 | { | |
0df8b418 | 10372 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10373 | strcpy (rs->buf, "QTDPsrc:"); |
10374 | encode_source_string (num, addr, "cmd", cmd->line, | |
10375 | rs->buf + strlen (rs->buf), | |
10376 | rs->buf_size - strlen (rs->buf)); | |
10377 | putpkt (rs->buf); | |
10378 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10379 | if (strcmp (target_buf, "OK")) | |
10380 | warning (_("Target does not support source download.")); | |
10381 | ||
10382 | if (cmd->control_type == while_control | |
10383 | || cmd->control_type == while_stepping_control) | |
10384 | { | |
10385 | remote_download_command_source (num, addr, *cmd->body_list); | |
10386 | ||
0df8b418 | 10387 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10388 | strcpy (rs->buf, "QTDPsrc:"); |
10389 | encode_source_string (num, addr, "cmd", "end", | |
10390 | rs->buf + strlen (rs->buf), | |
10391 | rs->buf_size - strlen (rs->buf)); | |
10392 | putpkt (rs->buf); | |
10393 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10394 | if (strcmp (target_buf, "OK")) | |
10395 | warning (_("Target does not support source download.")); | |
10396 | } | |
10397 | } | |
10398 | } | |
10399 | ||
35b1e5cc | 10400 | static void |
548f7808 | 10401 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 10402 | { |
bba74b36 | 10403 | #define BUF_SIZE 2048 |
e8ba3115 | 10404 | |
35b1e5cc | 10405 | CORE_ADDR tpaddr; |
409873ef | 10406 | char addrbuf[40]; |
bba74b36 | 10407 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10408 | char **tdp_actions; |
10409 | char **stepping_actions; | |
10410 | int ndx; | |
10411 | struct cleanup *old_chain = NULL; | |
10412 | struct agent_expr *aexpr; | |
10413 | struct cleanup *aexpr_chain = NULL; | |
10414 | char *pkt; | |
e8ba3115 | 10415 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10416 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10417 | |
dc673c81 | 10418 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10419 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10420 | tdp_actions); | |
10421 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10422 | stepping_actions); | |
10423 | ||
10424 | tpaddr = loc->address; | |
10425 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10426 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10427 | addrbuf, /* address */ | |
10428 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10429 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10430 | /* Fast tracepoints are mostly handled by the target, but we can |
10431 | tell the target how big of an instruction block should be moved | |
10432 | around. */ | |
10433 | if (b->type == bp_fast_tracepoint) | |
10434 | { | |
10435 | /* Only test for support at download time; we may not know | |
10436 | target capabilities at definition time. */ | |
10437 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10438 | { |
e8ba3115 | 10439 | int isize; |
35b1e5cc | 10440 | |
f5656ead | 10441 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10442 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10443 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10444 | isize); | |
35b1e5cc | 10445 | else |
e8ba3115 YQ |
10446 | /* If it passed validation at definition but fails now, |
10447 | something is very wrong. */ | |
10448 | internal_error (__FILE__, __LINE__, | |
10449 | _("Fast tracepoint not " | |
10450 | "valid during download")); | |
35b1e5cc | 10451 | } |
e8ba3115 YQ |
10452 | else |
10453 | /* Fast tracepoints are functionally identical to regular | |
10454 | tracepoints, so don't take lack of support as a reason to | |
10455 | give up on the trace run. */ | |
10456 | warning (_("Target does not support fast tracepoints, " | |
10457 | "downloading %d as regular tracepoint"), b->number); | |
10458 | } | |
10459 | else if (b->type == bp_static_tracepoint) | |
10460 | { | |
10461 | /* Only test for support at download time; we may not know | |
10462 | target capabilities at definition time. */ | |
10463 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10464 | { |
e8ba3115 | 10465 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10466 | |
e8ba3115 YQ |
10467 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10468 | strcat (buf, ":S"); | |
0fb4aa4b | 10469 | else |
e8ba3115 | 10470 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10471 | } |
e8ba3115 YQ |
10472 | else |
10473 | /* Fast tracepoints are functionally identical to regular | |
10474 | tracepoints, so don't take lack of support as a reason | |
10475 | to give up on the trace run. */ | |
10476 | error (_("Target does not support static tracepoints")); | |
10477 | } | |
10478 | /* If the tracepoint has a conditional, make it into an agent | |
10479 | expression and append to the definition. */ | |
10480 | if (loc->cond) | |
10481 | { | |
10482 | /* Only test support at download time, we may not know target | |
10483 | capabilities at definition time. */ | |
10484 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10485 | { |
e8ba3115 YQ |
10486 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10487 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10488 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10489 | aexpr->len); | |
e8ba3115 YQ |
10490 | pkt = buf + strlen (buf); |
10491 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10492 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10493 | *pkt = '\0'; | |
10494 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10495 | } |
e8ba3115 YQ |
10496 | else |
10497 | warning (_("Target does not support conditional tracepoints, " | |
10498 | "ignoring tp %d cond"), b->number); | |
10499 | } | |
35b1e5cc | 10500 | |
d9b3f62e | 10501 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10502 | strcat (buf, "-"); |
10503 | putpkt (buf); | |
10504 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10505 | if (strcmp (target_buf, "OK")) | |
10506 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10507 | |
e8ba3115 YQ |
10508 | /* do_single_steps (t); */ |
10509 | if (tdp_actions) | |
10510 | { | |
10511 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10512 | { |
e8ba3115 | 10513 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10514 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10515 | b->number, addrbuf, /* address */ | |
10516 | tdp_actions[ndx], | |
10517 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10518 | ? '-' : 0)); | |
e8ba3115 YQ |
10519 | putpkt (buf); |
10520 | remote_get_noisy_reply (&target_buf, | |
10521 | &target_buf_size); | |
10522 | if (strcmp (target_buf, "OK")) | |
10523 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10524 | } |
e8ba3115 YQ |
10525 | } |
10526 | if (stepping_actions) | |
10527 | { | |
10528 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10529 | { |
e8ba3115 | 10530 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10531 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10532 | b->number, addrbuf, /* address */ | |
10533 | ((ndx == 0) ? "S" : ""), | |
10534 | stepping_actions[ndx], | |
10535 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10536 | putpkt (buf); |
10537 | remote_get_noisy_reply (&target_buf, | |
10538 | &target_buf_size); | |
10539 | if (strcmp (target_buf, "OK")) | |
10540 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10541 | } |
e8ba3115 | 10542 | } |
409873ef | 10543 | |
e8ba3115 YQ |
10544 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10545 | == PACKET_ENABLE) | |
10546 | { | |
10547 | if (b->addr_string) | |
409873ef | 10548 | { |
e8ba3115 YQ |
10549 | strcpy (buf, "QTDPsrc:"); |
10550 | encode_source_string (b->number, loc->address, | |
10551 | "at", b->addr_string, buf + strlen (buf), | |
10552 | 2048 - strlen (buf)); | |
409873ef | 10553 | |
e8ba3115 YQ |
10554 | putpkt (buf); |
10555 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10556 | if (strcmp (target_buf, "OK")) | |
10557 | warning (_("Target does not support source download.")); | |
409873ef | 10558 | } |
e8ba3115 YQ |
10559 | if (b->cond_string) |
10560 | { | |
10561 | strcpy (buf, "QTDPsrc:"); | |
10562 | encode_source_string (b->number, loc->address, | |
10563 | "cond", b->cond_string, buf + strlen (buf), | |
10564 | 2048 - strlen (buf)); | |
10565 | putpkt (buf); | |
10566 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10567 | if (strcmp (target_buf, "OK")) | |
10568 | warning (_("Target does not support source download.")); | |
10569 | } | |
10570 | remote_download_command_source (b->number, loc->address, | |
10571 | breakpoint_commands (b)); | |
35b1e5cc | 10572 | } |
e8ba3115 YQ |
10573 | |
10574 | do_cleanups (old_chain); | |
35b1e5cc SS |
10575 | } |
10576 | ||
1e4d1764 | 10577 | static int |
a52a8357 | 10578 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 10579 | { |
1e51243a PA |
10580 | struct remote_state *rs = get_remote_state (); |
10581 | struct trace_status *ts; | |
10582 | int status; | |
10583 | ||
10584 | /* Don't try to install tracepoints until we've relocated our | |
10585 | symbols, and fetched and merged the target's tracepoint list with | |
10586 | ours. */ | |
10587 | if (rs->starting_up) | |
10588 | return 0; | |
10589 | ||
10590 | ts = current_trace_status (); | |
8bd200f1 | 10591 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
10592 | |
10593 | if (status == -1 || !ts->running_known || !ts->running) | |
10594 | return 0; | |
10595 | ||
10596 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10597 | installing tracepoint in trace, we have to return. */ | |
10598 | if (!remote_supports_install_in_trace ()) | |
10599 | return 0; | |
10600 | ||
10601 | return 1; | |
10602 | } | |
10603 | ||
10604 | ||
35b1e5cc | 10605 | static void |
559d2b81 TT |
10606 | remote_download_trace_state_variable (struct target_ops *self, |
10607 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
10608 | { |
10609 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10610 | char *p; |
35b1e5cc | 10611 | |
bba74b36 YQ |
10612 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10613 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10614 | tsv->builtin); | |
00bf0b85 SS |
10615 | p = rs->buf + strlen (rs->buf); |
10616 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10617 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 10618 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 10619 | *p++ = '\0'; |
35b1e5cc SS |
10620 | putpkt (rs->buf); |
10621 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10622 | if (*target_buf == '\0') |
10623 | error (_("Target does not support this command.")); | |
10624 | if (strcmp (target_buf, "OK") != 0) | |
10625 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10626 | } |
10627 | ||
d248b706 | 10628 | static void |
46670d57 TT |
10629 | remote_enable_tracepoint (struct target_ops *self, |
10630 | struct bp_location *location) | |
d248b706 KY |
10631 | { |
10632 | struct remote_state *rs = get_remote_state (); | |
10633 | char addr_buf[40]; | |
10634 | ||
10635 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10636 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10637 | location->owner->number, addr_buf); | |
d248b706 KY |
10638 | putpkt (rs->buf); |
10639 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10640 | if (*rs->buf == '\0') | |
10641 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10642 | if (strcmp (rs->buf, "OK") != 0) | |
10643 | error (_("Error on target while enabling tracepoint.")); | |
10644 | } | |
10645 | ||
10646 | static void | |
780b049c TT |
10647 | remote_disable_tracepoint (struct target_ops *self, |
10648 | struct bp_location *location) | |
d248b706 KY |
10649 | { |
10650 | struct remote_state *rs = get_remote_state (); | |
10651 | char addr_buf[40]; | |
10652 | ||
10653 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10654 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10655 | location->owner->number, addr_buf); | |
d248b706 KY |
10656 | putpkt (rs->buf); |
10657 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10658 | if (*rs->buf == '\0') | |
10659 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10660 | if (strcmp (rs->buf, "OK") != 0) | |
10661 | error (_("Error on target while disabling tracepoint.")); | |
10662 | } | |
10663 | ||
35b1e5cc | 10664 | static void |
583f9a86 | 10665 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
10666 | { |
10667 | asection *s; | |
81b9b86e | 10668 | bfd *abfd = NULL; |
35b1e5cc | 10669 | bfd_size_type size; |
608bcef2 | 10670 | bfd_vma vma; |
35b1e5cc | 10671 | int anysecs = 0; |
c2fa21f1 | 10672 | int offset = 0; |
35b1e5cc SS |
10673 | |
10674 | if (!exec_bfd) | |
10675 | return; /* No information to give. */ | |
10676 | ||
10677 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10678 | offset = strlen (target_buf); |
35b1e5cc SS |
10679 | for (s = exec_bfd->sections; s; s = s->next) |
10680 | { | |
10681 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10682 | int sec_length; |
35b1e5cc SS |
10683 | |
10684 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10685 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10686 | (s->flags & SEC_READONLY) == 0) |
10687 | continue; | |
10688 | ||
10689 | anysecs = 1; | |
81b9b86e | 10690 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10691 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10692 | sprintf_vma (tmp1, vma); |
10693 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10694 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10695 | if (offset + sec_length + 1 > target_buf_size) | |
10696 | { | |
864ac8a7 HZ |
10697 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10698 | != PACKET_ENABLE) | |
10699 | warning (_("\ | |
c2fa21f1 HZ |
10700 | Too many sections for read-only sections definition packet.")); |
10701 | break; | |
10702 | } | |
bba74b36 YQ |
10703 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10704 | tmp1, tmp2); | |
c2fa21f1 | 10705 | offset += sec_length; |
35b1e5cc SS |
10706 | } |
10707 | if (anysecs) | |
10708 | { | |
10709 | putpkt (target_buf); | |
10710 | getpkt (&target_buf, &target_buf_size, 0); | |
10711 | } | |
10712 | } | |
10713 | ||
10714 | static void | |
e2d1aae3 | 10715 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
10716 | { |
10717 | putpkt ("QTStart"); | |
10718 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10719 | if (*target_buf == '\0') |
10720 | error (_("Target does not support this command.")); | |
10721 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10722 | error (_("Bogus reply from target: %s"), target_buf); |
10723 | } | |
10724 | ||
10725 | static int | |
8bd200f1 | 10726 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 10727 | { |
953b98d1 | 10728 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10729 | char *p = NULL; |
0df8b418 | 10730 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10731 | extern int trace_regblock_size; |
67f41397 | 10732 | volatile struct gdb_exception ex; |
bd3eecc3 PA |
10733 | enum packet_result result; |
10734 | ||
10735 | if (remote_protocol_packets[PACKET_qTStatus].support == PACKET_DISABLE) | |
10736 | return -1; | |
a744cf53 | 10737 | |
00bf0b85 SS |
10738 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10739 | ||
049dc89b JK |
10740 | putpkt ("qTStatus"); |
10741 | ||
67f41397 JK |
10742 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
10743 | { | |
10744 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10745 | } | |
10746 | if (ex.reason < 0) | |
10747 | { | |
598d3636 JK |
10748 | if (ex.error != TARGET_CLOSE_ERROR) |
10749 | { | |
10750 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10751 | return -1; | |
10752 | } | |
10753 | throw_exception (ex); | |
67f41397 | 10754 | } |
00bf0b85 | 10755 | |
bd3eecc3 PA |
10756 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10757 | ||
00bf0b85 | 10758 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10759 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10760 | return -1; |
35b1e5cc | 10761 | |
00bf0b85 | 10762 | /* We're working with a live target. */ |
f5911ea1 | 10763 | ts->filename = NULL; |
00bf0b85 | 10764 | |
00bf0b85 | 10765 | if (*p++ != 'T') |
35b1e5cc SS |
10766 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10767 | ||
84cebc4a YQ |
10768 | /* Function 'parse_trace_status' sets default value of each field of |
10769 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10770 | parse_trace_status (p, ts); |
10771 | ||
10772 | return ts->running; | |
35b1e5cc SS |
10773 | } |
10774 | ||
70221824 | 10775 | static void |
db90e85c | 10776 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
10777 | struct uploaded_tp *utp) |
10778 | { | |
10779 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10780 | char *reply; |
10781 | struct bp_location *loc; | |
10782 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10783 | size_t size = get_remote_packet_size (); |
f196051f SS |
10784 | |
10785 | if (tp) | |
10786 | { | |
10787 | tp->base.hit_count = 0; | |
10788 | tp->traceframe_usage = 0; | |
10789 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10790 | { | |
10791 | /* If the tracepoint was never downloaded, don't go asking for | |
10792 | any status. */ | |
10793 | if (tp->number_on_target == 0) | |
10794 | continue; | |
bba74b36 YQ |
10795 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10796 | phex_nz (loc->address, 0)); | |
f196051f SS |
10797 | putpkt (rs->buf); |
10798 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10799 | if (reply && *reply) | |
10800 | { | |
10801 | if (*reply == 'V') | |
10802 | parse_tracepoint_status (reply + 1, bp, utp); | |
10803 | } | |
10804 | } | |
10805 | } | |
10806 | else if (utp) | |
10807 | { | |
10808 | utp->hit_count = 0; | |
10809 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10810 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10811 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10812 | putpkt (rs->buf); |
10813 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10814 | if (reply && *reply) | |
10815 | { | |
10816 | if (*reply == 'V') | |
10817 | parse_tracepoint_status (reply + 1, bp, utp); | |
10818 | } | |
10819 | } | |
10820 | } | |
10821 | ||
35b1e5cc | 10822 | static void |
74499f1b | 10823 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
10824 | { |
10825 | putpkt ("QTStop"); | |
10826 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10827 | if (*target_buf == '\0') |
10828 | error (_("Target does not support this command.")); | |
10829 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10830 | error (_("Bogus reply from target: %s"), target_buf); |
10831 | } | |
10832 | ||
10833 | static int | |
bd4c6793 TT |
10834 | remote_trace_find (struct target_ops *self, |
10835 | enum trace_find_type type, int num, | |
cc5925ad | 10836 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
10837 | int *tpp) |
10838 | { | |
10839 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10840 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10841 | char *p, *reply; |
10842 | int target_frameno = -1, target_tracept = -1; | |
10843 | ||
e6e4e701 PA |
10844 | /* Lookups other than by absolute frame number depend on the current |
10845 | trace selected, so make sure it is correct on the remote end | |
10846 | first. */ | |
10847 | if (type != tfind_number) | |
10848 | set_remote_traceframe (); | |
10849 | ||
35b1e5cc SS |
10850 | p = rs->buf; |
10851 | strcpy (p, "QTFrame:"); | |
10852 | p = strchr (p, '\0'); | |
10853 | switch (type) | |
10854 | { | |
10855 | case tfind_number: | |
bba74b36 | 10856 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10857 | break; |
10858 | case tfind_pc: | |
bba74b36 | 10859 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10860 | break; |
10861 | case tfind_tp: | |
bba74b36 | 10862 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10863 | break; |
10864 | case tfind_range: | |
bba74b36 YQ |
10865 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10866 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10867 | break; |
10868 | case tfind_outside: | |
bba74b36 YQ |
10869 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10870 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10871 | break; |
10872 | default: | |
9b20d036 | 10873 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10874 | } |
10875 | ||
10876 | putpkt (rs->buf); | |
2f65bcb7 | 10877 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
10878 | if (*reply == '\0') |
10879 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10880 | |
10881 | while (reply && *reply) | |
10882 | switch (*reply) | |
10883 | { | |
10884 | case 'F': | |
f197e0f1 VP |
10885 | p = ++reply; |
10886 | target_frameno = (int) strtol (p, &reply, 16); | |
10887 | if (reply == p) | |
10888 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10889 | /* Don't update our remote traceframe number cache on failure |
10890 | to select a remote traceframe. */ | |
f197e0f1 VP |
10891 | if (target_frameno == -1) |
10892 | return -1; | |
35b1e5cc SS |
10893 | break; |
10894 | case 'T': | |
f197e0f1 VP |
10895 | p = ++reply; |
10896 | target_tracept = (int) strtol (p, &reply, 16); | |
10897 | if (reply == p) | |
10898 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10899 | break; |
10900 | case 'O': /* "OK"? */ | |
10901 | if (reply[1] == 'K' && reply[2] == '\0') | |
10902 | reply += 2; | |
10903 | else | |
10904 | error (_("Bogus reply from target: %s"), reply); | |
10905 | break; | |
10906 | default: | |
10907 | error (_("Bogus reply from target: %s"), reply); | |
10908 | } | |
10909 | if (tpp) | |
10910 | *tpp = target_tracept; | |
e6e4e701 | 10911 | |
262e1174 | 10912 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
10913 | return target_frameno; |
10914 | } | |
10915 | ||
10916 | static int | |
4011015b TT |
10917 | remote_get_trace_state_variable_value (struct target_ops *self, |
10918 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
10919 | { |
10920 | struct remote_state *rs = get_remote_state (); | |
10921 | char *reply; | |
10922 | ULONGEST uval; | |
10923 | ||
e6e4e701 PA |
10924 | set_remote_traceframe (); |
10925 | ||
bba74b36 | 10926 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10927 | putpkt (rs->buf); |
10928 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10929 | if (reply && *reply) | |
10930 | { | |
10931 | if (*reply == 'V') | |
10932 | { | |
10933 | unpack_varlen_hex (reply + 1, &uval); | |
10934 | *val = (LONGEST) uval; | |
10935 | return 1; | |
10936 | } | |
10937 | } | |
10938 | return 0; | |
10939 | } | |
10940 | ||
00bf0b85 | 10941 | static int |
dc3decaf | 10942 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
10943 | { |
10944 | struct remote_state *rs = get_remote_state (); | |
10945 | char *p, *reply; | |
10946 | ||
10947 | p = rs->buf; | |
10948 | strcpy (p, "QTSave:"); | |
10949 | p += strlen (p); | |
10950 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10951 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 10952 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
10953 | *p++ = '\0'; |
10954 | putpkt (rs->buf); | |
ad91cd99 | 10955 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10956 | if (*reply == '\0') |
ad91cd99 PA |
10957 | error (_("Target does not support this command.")); |
10958 | if (strcmp (reply, "OK") != 0) | |
10959 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10960 | return 0; |
10961 | } | |
10962 | ||
10963 | /* This is basically a memory transfer, but needs to be its own packet | |
10964 | because we don't know how the target actually organizes its trace | |
10965 | memory, plus we want to be able to ask for as much as possible, but | |
10966 | not be unhappy if we don't get as much as we ask for. */ | |
10967 | ||
10968 | static LONGEST | |
10969 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10970 | { | |
10971 | struct remote_state *rs = get_remote_state (); | |
10972 | char *reply; | |
10973 | char *p; | |
10974 | int rslt; | |
10975 | ||
10976 | p = rs->buf; | |
10977 | strcpy (p, "qTBuffer:"); | |
10978 | p += strlen (p); | |
10979 | p += hexnumstr (p, offset); | |
10980 | *p++ = ','; | |
10981 | p += hexnumstr (p, len); | |
10982 | *p++ = '\0'; | |
10983 | ||
10984 | putpkt (rs->buf); | |
10985 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10986 | if (reply && *reply) | |
10987 | { | |
10988 | /* 'l' by itself means we're at the end of the buffer and | |
10989 | there is nothing more to get. */ | |
10990 | if (*reply == 'l') | |
10991 | return 0; | |
10992 | ||
10993 | /* Convert the reply into binary. Limit the number of bytes to | |
10994 | convert according to our passed-in buffer size, rather than | |
10995 | what was returned in the packet; if the target is | |
10996 | unexpectedly generous and gives us a bigger reply than we | |
10997 | asked for, we don't want to crash. */ | |
10998 | rslt = hex2bin (target_buf, buf, len); | |
10999 | return rslt; | |
11000 | } | |
11001 | ||
11002 | /* Something went wrong, flag as an error. */ | |
11003 | return -1; | |
11004 | } | |
11005 | ||
35b1e5cc SS |
11006 | static void |
11007 | remote_set_disconnected_tracing (int val) | |
11008 | { | |
11009 | struct remote_state *rs = get_remote_state (); | |
11010 | ||
33da3f1c SS |
11011 | if (rs->disconnected_tracing) |
11012 | { | |
ad91cd99 PA |
11013 | char *reply; |
11014 | ||
bba74b36 | 11015 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11016 | putpkt (rs->buf); |
ad91cd99 PA |
11017 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11018 | if (*reply == '\0') | |
33da3f1c | 11019 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11020 | if (strcmp (reply, "OK") != 0) |
11021 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11022 | } |
11023 | else if (val) | |
11024 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11025 | } |
11026 | ||
dc146f7c VP |
11027 | static int |
11028 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11029 | { | |
11030 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11031 | |
dc146f7c VP |
11032 | if (info && info->private) |
11033 | return info->private->core; | |
11034 | return -1; | |
11035 | } | |
11036 | ||
4daf5ac0 SS |
11037 | static void |
11038 | remote_set_circular_trace_buffer (int val) | |
11039 | { | |
11040 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11041 | char *reply; |
4daf5ac0 | 11042 | |
bba74b36 | 11043 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11044 | putpkt (rs->buf); |
ad91cd99 PA |
11045 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11046 | if (*reply == '\0') | |
4daf5ac0 | 11047 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11048 | if (strcmp (reply, "OK") != 0) |
11049 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11050 | } |
11051 | ||
b3b9301e PA |
11052 | static struct traceframe_info * |
11053 | remote_traceframe_info (void) | |
11054 | { | |
11055 | char *text; | |
11056 | ||
6c177e28 YQ |
11057 | /* If current traceframe is not selected, don't bother the remote |
11058 | stub. */ | |
11059 | if (get_traceframe_number () < 0) | |
11060 | return NULL; | |
11061 | ||
b3b9301e PA |
11062 | text = target_read_stralloc (¤t_target, |
11063 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11064 | if (text != NULL) | |
11065 | { | |
11066 | struct traceframe_info *info; | |
11067 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11068 | ||
11069 | info = parse_traceframe_info (text); | |
11070 | do_cleanups (back_to); | |
11071 | return info; | |
11072 | } | |
11073 | ||
11074 | return NULL; | |
11075 | } | |
11076 | ||
405f8e94 SS |
11077 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11078 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11079 | if the packet is not supported, and 0 if the minimum instruction | |
11080 | length is unknown. */ | |
11081 | ||
11082 | static int | |
11083 | remote_get_min_fast_tracepoint_insn_len (void) | |
11084 | { | |
11085 | struct remote_state *rs = get_remote_state (); | |
11086 | char *reply; | |
11087 | ||
e886a173 PA |
11088 | /* If we're not debugging a process yet, the IPA can't be |
11089 | loaded. */ | |
11090 | if (!target_has_execution) | |
11091 | return 0; | |
11092 | ||
11093 | /* Make sure the remote is pointing at the right process. */ | |
11094 | set_general_process (); | |
11095 | ||
bba74b36 | 11096 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11097 | putpkt (rs->buf); |
11098 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11099 | if (*reply == '\0') | |
11100 | return -1; | |
11101 | else | |
11102 | { | |
11103 | ULONGEST min_insn_len; | |
11104 | ||
11105 | unpack_varlen_hex (reply, &min_insn_len); | |
11106 | ||
11107 | return (int) min_insn_len; | |
11108 | } | |
11109 | } | |
11110 | ||
f6f899bf HAQ |
11111 | static void |
11112 | remote_set_trace_buffer_size (LONGEST val) | |
11113 | { | |
90585175 HAQ |
11114 | if (remote_protocol_packets[PACKET_QTBuffer_size].support |
11115 | != PACKET_DISABLE) | |
f6f899bf HAQ |
11116 | { |
11117 | struct remote_state *rs = get_remote_state (); | |
11118 | char *buf = rs->buf; | |
11119 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11120 | enum packet_result result; | |
11121 | ||
11122 | gdb_assert (val >= 0 || val == -1); | |
11123 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11124 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11125 | if (val < 0) | |
11126 | { | |
11127 | *buf++ = '-'; | |
11128 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11129 | } | |
11130 | else | |
11131 | buf += hexnumstr (buf, (ULONGEST) val); | |
11132 | ||
11133 | putpkt (rs->buf); | |
11134 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11135 | result = packet_ok (rs->buf, | |
11136 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11137 | ||
11138 | if (result != PACKET_OK) | |
11139 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11140 | } | |
11141 | } | |
11142 | ||
f196051f | 11143 | static int |
ca623f82 TT |
11144 | remote_set_trace_notes (const char *user, const char *notes, |
11145 | const char *stop_notes) | |
f196051f SS |
11146 | { |
11147 | struct remote_state *rs = get_remote_state (); | |
11148 | char *reply; | |
11149 | char *buf = rs->buf; | |
11150 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11151 | int nbytes; | |
11152 | ||
11153 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11154 | if (user) | |
11155 | { | |
11156 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11157 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11158 | buf += 2 * nbytes; |
11159 | *buf++ = ';'; | |
11160 | } | |
11161 | if (notes) | |
11162 | { | |
11163 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11164 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11165 | buf += 2 * nbytes; |
11166 | *buf++ = ';'; | |
11167 | } | |
11168 | if (stop_notes) | |
11169 | { | |
11170 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11171 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11172 | buf += 2 * nbytes; |
11173 | *buf++ = ';'; | |
11174 | } | |
11175 | /* Ensure the buffer is terminated. */ | |
11176 | *buf = '\0'; | |
11177 | ||
11178 | putpkt (rs->buf); | |
11179 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11180 | if (*reply == '\0') | |
11181 | return 0; | |
11182 | ||
11183 | if (strcmp (reply, "OK") != 0) | |
11184 | error (_("Bogus reply from target: %s"), reply); | |
11185 | ||
11186 | return 1; | |
11187 | } | |
11188 | ||
d1feda86 YQ |
11189 | static int |
11190 | remote_use_agent (int use) | |
11191 | { | |
11192 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
11193 | { | |
11194 | struct remote_state *rs = get_remote_state (); | |
11195 | ||
11196 | /* If the stub supports QAgent. */ | |
bba74b36 | 11197 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11198 | putpkt (rs->buf); |
11199 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11200 | ||
11201 | if (strcmp (rs->buf, "OK") == 0) | |
11202 | { | |
11203 | use_agent = use; | |
11204 | return 1; | |
11205 | } | |
11206 | } | |
11207 | ||
11208 | return 0; | |
11209 | } | |
11210 | ||
11211 | static int | |
11212 | remote_can_use_agent (void) | |
11213 | { | |
11214 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11215 | } | |
11216 | ||
9accd112 MM |
11217 | struct btrace_target_info |
11218 | { | |
11219 | /* The ptid of the traced thread. */ | |
11220 | ptid_t ptid; | |
11221 | }; | |
11222 | ||
11223 | /* Check whether the target supports branch tracing. */ | |
11224 | ||
11225 | static int | |
46917d26 | 11226 | remote_supports_btrace (struct target_ops *self) |
9accd112 MM |
11227 | { |
11228 | if (remote_protocol_packets[PACKET_Qbtrace_off].support != PACKET_ENABLE) | |
11229 | return 0; | |
11230 | if (remote_protocol_packets[PACKET_Qbtrace_bts].support != PACKET_ENABLE) | |
11231 | return 0; | |
11232 | if (remote_protocol_packets[PACKET_qXfer_btrace].support != PACKET_ENABLE) | |
11233 | return 0; | |
11234 | ||
11235 | return 1; | |
11236 | } | |
11237 | ||
11238 | /* Enable branch tracing. */ | |
11239 | ||
11240 | static struct btrace_target_info * | |
11241 | remote_enable_btrace (ptid_t ptid) | |
11242 | { | |
11243 | struct btrace_target_info *tinfo = NULL; | |
11244 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11245 | struct remote_state *rs = get_remote_state (); | |
11246 | char *buf = rs->buf; | |
11247 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11248 | ||
11249 | if (packet->support != PACKET_ENABLE) | |
11250 | error (_("Target does not support branch tracing.")); | |
11251 | ||
11252 | set_general_thread (ptid); | |
11253 | ||
11254 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11255 | putpkt (rs->buf); | |
11256 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11257 | ||
11258 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11259 | { | |
11260 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11261 | error (_("Could not enable branch tracing for %s: %s"), | |
11262 | target_pid_to_str (ptid), rs->buf + 2); | |
11263 | else | |
11264 | error (_("Could not enable branch tracing for %s."), | |
11265 | target_pid_to_str (ptid)); | |
11266 | } | |
11267 | ||
11268 | tinfo = xzalloc (sizeof (*tinfo)); | |
11269 | tinfo->ptid = ptid; | |
11270 | ||
11271 | return tinfo; | |
11272 | } | |
11273 | ||
11274 | /* Disable branch tracing. */ | |
11275 | ||
11276 | static void | |
11277 | remote_disable_btrace (struct btrace_target_info *tinfo) | |
11278 | { | |
11279 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11280 | struct remote_state *rs = get_remote_state (); | |
11281 | char *buf = rs->buf; | |
11282 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11283 | ||
11284 | if (packet->support != PACKET_ENABLE) | |
11285 | error (_("Target does not support branch tracing.")); | |
11286 | ||
11287 | set_general_thread (tinfo->ptid); | |
11288 | ||
11289 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11290 | putpkt (rs->buf); | |
11291 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11292 | ||
11293 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11294 | { | |
11295 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11296 | error (_("Could not disable branch tracing for %s: %s"), | |
11297 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11298 | else | |
11299 | error (_("Could not disable branch tracing for %s."), | |
11300 | target_pid_to_str (tinfo->ptid)); | |
11301 | } | |
11302 | ||
11303 | xfree (tinfo); | |
11304 | } | |
11305 | ||
11306 | /* Teardown branch tracing. */ | |
11307 | ||
11308 | static void | |
11309 | remote_teardown_btrace (struct btrace_target_info *tinfo) | |
11310 | { | |
11311 | /* We must not talk to the target during teardown. */ | |
11312 | xfree (tinfo); | |
11313 | } | |
11314 | ||
11315 | /* Read the branch trace. */ | |
11316 | ||
969c39fb MM |
11317 | static enum btrace_error |
11318 | remote_read_btrace (VEC (btrace_block_s) **btrace, | |
11319 | struct btrace_target_info *tinfo, | |
9accd112 MM |
11320 | enum btrace_read_type type) |
11321 | { | |
11322 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11323 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 11324 | struct cleanup *cleanup; |
9accd112 MM |
11325 | const char *annex; |
11326 | char *xml; | |
11327 | ||
11328 | if (packet->support != PACKET_ENABLE) | |
11329 | error (_("Target does not support branch tracing.")); | |
11330 | ||
11331 | #if !defined(HAVE_LIBEXPAT) | |
11332 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11333 | #endif | |
11334 | ||
11335 | switch (type) | |
11336 | { | |
864089d2 | 11337 | case BTRACE_READ_ALL: |
9accd112 MM |
11338 | annex = "all"; |
11339 | break; | |
864089d2 | 11340 | case BTRACE_READ_NEW: |
9accd112 MM |
11341 | annex = "new"; |
11342 | break; | |
969c39fb MM |
11343 | case BTRACE_READ_DELTA: |
11344 | annex = "delta"; | |
11345 | break; | |
9accd112 MM |
11346 | default: |
11347 | internal_error (__FILE__, __LINE__, | |
11348 | _("Bad branch tracing read type: %u."), | |
11349 | (unsigned int) type); | |
11350 | } | |
11351 | ||
11352 | xml = target_read_stralloc (¤t_target, | |
11353 | TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
11354 | if (xml == NULL) |
11355 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 11356 | |
969c39fb MM |
11357 | cleanup = make_cleanup (xfree, xml); |
11358 | *btrace = parse_xml_btrace (xml); | |
11359 | do_cleanups (cleanup); | |
9accd112 | 11360 | |
969c39fb | 11361 | return BTRACE_ERR_NONE; |
9accd112 MM |
11362 | } |
11363 | ||
ced63ec0 GB |
11364 | static int |
11365 | remote_augmented_libraries_svr4_read (void) | |
11366 | { | |
11367 | struct remote_state *rs = get_remote_state (); | |
11368 | ||
11369 | return rs->augmented_libraries_svr4_read; | |
11370 | } | |
11371 | ||
9dd130a0 TT |
11372 | /* Implementation of to_load. */ |
11373 | ||
11374 | static void | |
71a9f134 | 11375 | remote_load (struct target_ops *self, char *name, int from_tty) |
9dd130a0 TT |
11376 | { |
11377 | generic_load (name, from_tty); | |
11378 | } | |
11379 | ||
c906108c | 11380 | static void |
fba45db2 | 11381 | init_remote_ops (void) |
c906108c | 11382 | { |
c5aa993b | 11383 | remote_ops.to_shortname = "remote"; |
c906108c | 11384 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11385 | remote_ops.to_doc = |
c906108c | 11386 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11387 | Specify the serial device it is connected to\n\ |
11388 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11389 | remote_ops.to_open = remote_open; |
11390 | remote_ops.to_close = remote_close; | |
c906108c | 11391 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11392 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11393 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11394 | remote_ops.to_wait = remote_wait; |
11395 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11396 | remote_ops.to_store_registers = remote_store_registers; | |
11397 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11398 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11399 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11400 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11401 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11402 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11403 | remote_ops.to_watchpoint_addr_within_range = |
11404 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11405 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11406 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11407 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11408 | remote_ops.to_region_ok_for_hw_watchpoint |
11409 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11410 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11411 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 11412 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 11413 | remote_ops.to_load = remote_load; |
c906108c | 11414 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11415 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11416 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11417 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11418 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11419 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11420 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11421 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11422 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11423 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11424 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11425 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11426 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11427 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11428 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11429 | remote_ops.to_has_memory = default_child_has_memory; | |
11430 | remote_ops.to_has_stack = default_child_has_stack; | |
11431 | remote_ops.to_has_registers = default_child_has_registers; | |
11432 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11433 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11434 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11435 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11436 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11437 | remote_ops.to_flash_erase = remote_flash_erase; |
11438 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11439 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11440 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11441 | remote_ops.to_can_async_p = remote_can_async_p; |
11442 | remote_ops.to_is_async_p = remote_is_async_p; | |
11443 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11444 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11445 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11446 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11447 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11448 | remote_ops.to_supports_disable_randomization |
11449 | = remote_supports_disable_randomization; | |
7313baad UW |
11450 | remote_ops.to_fileio_open = remote_hostio_open; |
11451 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11452 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11453 | remote_ops.to_fileio_close = remote_hostio_close; | |
11454 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11455 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11456 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11457 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11458 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11459 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11460 | remote_ops.to_trace_init = remote_trace_init; |
11461 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11462 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11463 | remote_ops.to_download_trace_state_variable |
11464 | = remote_download_trace_state_variable; | |
d248b706 KY |
11465 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11466 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11467 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11468 | remote_ops.to_trace_start = remote_trace_start; | |
11469 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11470 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11471 | remote_ops.to_trace_stop = remote_trace_stop; |
11472 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11473 | remote_ops.to_get_trace_state_variable_value |
11474 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11475 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11476 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11477 | remote_ops.to_upload_trace_state_variables |
11478 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11479 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11480 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11481 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11482 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11483 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11484 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11485 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11486 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11487 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11488 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11489 | remote_ops.to_static_tracepoint_marker_at |
11490 | = remote_static_tracepoint_marker_at; | |
11491 | remote_ops.to_static_tracepoint_markers_by_strid | |
11492 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11493 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11494 | remote_ops.to_use_agent = remote_use_agent; |
11495 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11496 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11497 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11498 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11499 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11500 | remote_ops.to_read_btrace = remote_read_btrace; | |
ced63ec0 GB |
11501 | remote_ops.to_augmented_libraries_svr4_read = |
11502 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11503 | } |
11504 | ||
11505 | /* Set up the extended remote vector by making a copy of the standard | |
11506 | remote vector and adding to it. */ | |
11507 | ||
11508 | static void | |
fba45db2 | 11509 | init_extended_remote_ops (void) |
c906108c SS |
11510 | { |
11511 | extended_remote_ops = remote_ops; | |
11512 | ||
0f71a2f6 | 11513 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11514 | extended_remote_ops.to_longname = |
c906108c | 11515 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11516 | extended_remote_ops.to_doc = |
c906108c | 11517 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11518 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11519 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11520 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11521 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11522 | extended_remote_ops.to_detach = extended_remote_detach; |
11523 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11524 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11525 | extended_remote_ops.to_supports_disable_randomization |
11526 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11527 | } |
11528 | ||
6426a772 | 11529 | static int |
6a109b6b | 11530 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 11531 | { |
5d93a237 TT |
11532 | struct remote_state *rs = get_remote_state (); |
11533 | ||
c6ebd6cf | 11534 | if (!target_async_permitted) |
75c99385 PA |
11535 | /* We only enable async when the user specifically asks for it. */ |
11536 | return 0; | |
11537 | ||
23860348 | 11538 | /* We're async whenever the serial device is. */ |
5d93a237 | 11539 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11540 | } |
11541 | ||
11542 | static int | |
6a109b6b | 11543 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 11544 | { |
5d93a237 TT |
11545 | struct remote_state *rs = get_remote_state (); |
11546 | ||
c6ebd6cf | 11547 | if (!target_async_permitted) |
75c99385 PA |
11548 | /* We only enable async when the user specifically asks for it. */ |
11549 | return 0; | |
11550 | ||
23860348 | 11551 | /* We're async whenever the serial device is. */ |
5d93a237 | 11552 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11553 | } |
11554 | ||
2acceee2 JM |
11555 | /* Pass the SERIAL event on and up to the client. One day this code |
11556 | will be able to delay notifying the client of an event until the | |
23860348 | 11557 | point where an entire packet has been received. */ |
2acceee2 | 11558 | |
2acceee2 JM |
11559 | static serial_event_ftype remote_async_serial_handler; |
11560 | ||
6426a772 | 11561 | static void |
819cc324 | 11562 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11563 | { |
88b496c3 TT |
11564 | struct remote_state *rs = context; |
11565 | ||
2acceee2 JM |
11566 | /* Don't propogate error information up to the client. Instead let |
11567 | the client find out about the error by querying the target. */ | |
88b496c3 | 11568 | rs->async_client_callback (INF_REG_EVENT, rs->async_client_context); |
2acceee2 JM |
11569 | } |
11570 | ||
74531fed PA |
11571 | static void |
11572 | remote_async_inferior_event_handler (gdb_client_data data) | |
11573 | { | |
11574 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11575 | } | |
11576 | ||
2acceee2 | 11577 | static void |
6a109b6b TT |
11578 | remote_async (struct target_ops *ops, |
11579 | void (*callback) (enum inferior_event_type event_type, | |
11580 | void *context), | |
11581 | void *context) | |
2acceee2 | 11582 | { |
5d93a237 TT |
11583 | struct remote_state *rs = get_remote_state (); |
11584 | ||
2acceee2 JM |
11585 | if (callback != NULL) |
11586 | { | |
88b496c3 TT |
11587 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
11588 | rs->async_client_callback = callback; | |
11589 | rs->async_client_context = context; | |
2acceee2 JM |
11590 | } |
11591 | else | |
5d93a237 | 11592 | serial_async (rs->remote_desc, NULL, NULL); |
6426a772 JM |
11593 | } |
11594 | ||
5a2468f5 | 11595 | static void |
c2d11a7d | 11596 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11597 | { |
427c3a89 | 11598 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11599 | } |
11600 | ||
d471ea57 AC |
11601 | static void |
11602 | show_remote_cmd (char *args, int from_tty) | |
11603 | { | |
37a105a1 | 11604 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11605 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11606 | struct cleanup *showlist_chain; |
11607 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11608 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11609 | |
11610 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11611 | for (; list != NULL; list = list->next) | |
11612 | if (strcmp (list->name, "Z-packet") == 0) | |
11613 | continue; | |
427c3a89 DJ |
11614 | else if (list->type == not_set_cmd) |
11615 | /* Alias commands are exactly like the original, except they | |
11616 | don't have the normal type. */ | |
11617 | continue; | |
11618 | else | |
37a105a1 DJ |
11619 | { |
11620 | struct cleanup *option_chain | |
11621 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11622 | |
37a105a1 DJ |
11623 | ui_out_field_string (uiout, "name", list->name); |
11624 | ui_out_text (uiout, ": "); | |
427c3a89 | 11625 | if (list->type == show_cmd) |
5b9afe8a | 11626 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11627 | else |
11628 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11629 | /* Close the tuple. */ |
11630 | do_cleanups (option_chain); | |
11631 | } | |
427c3a89 DJ |
11632 | |
11633 | /* Close the tuple. */ | |
11634 | do_cleanups (showlist_chain); | |
d471ea57 | 11635 | } |
5a2468f5 | 11636 | |
0f71a2f6 | 11637 | |
23860348 | 11638 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11639 | static void |
11640 | remote_new_objfile (struct objfile *objfile) | |
11641 | { | |
5d93a237 TT |
11642 | struct remote_state *rs = get_remote_state (); |
11643 | ||
11644 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11645 | remote_check_symbols (); |
dc8acb97 MS |
11646 | } |
11647 | ||
00bf0b85 SS |
11648 | /* Pull all the tracepoints defined on the target and create local |
11649 | data structures representing them. We don't want to create real | |
11650 | tracepoints yet, we don't want to mess up the user's existing | |
11651 | collection. */ | |
11652 | ||
11653 | static int | |
11654 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11655 | { |
00bf0b85 SS |
11656 | struct remote_state *rs = get_remote_state (); |
11657 | char *p; | |
d5551862 | 11658 | |
00bf0b85 SS |
11659 | /* Ask for a first packet of tracepoint definition. */ |
11660 | putpkt ("qTfP"); | |
11661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11662 | p = rs->buf; | |
11663 | while (*p && *p != 'l') | |
d5551862 | 11664 | { |
00bf0b85 SS |
11665 | parse_tracepoint_definition (p, utpp); |
11666 | /* Ask for another packet of tracepoint definition. */ | |
11667 | putpkt ("qTsP"); | |
11668 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11669 | p = rs->buf; | |
d5551862 | 11670 | } |
00bf0b85 | 11671 | return 0; |
d5551862 SS |
11672 | } |
11673 | ||
00bf0b85 SS |
11674 | static int |
11675 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11676 | { |
00bf0b85 | 11677 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11678 | char *p; |
d5551862 | 11679 | |
00bf0b85 SS |
11680 | /* Ask for a first packet of variable definition. */ |
11681 | putpkt ("qTfV"); | |
d5551862 SS |
11682 | getpkt (&rs->buf, &rs->buf_size, 0); |
11683 | p = rs->buf; | |
00bf0b85 | 11684 | while (*p && *p != 'l') |
d5551862 | 11685 | { |
00bf0b85 SS |
11686 | parse_tsv_definition (p, utsvp); |
11687 | /* Ask for another packet of variable definition. */ | |
11688 | putpkt ("qTsV"); | |
d5551862 SS |
11689 | getpkt (&rs->buf, &rs->buf_size, 0); |
11690 | p = rs->buf; | |
11691 | } | |
00bf0b85 | 11692 | return 0; |
d5551862 SS |
11693 | } |
11694 | ||
c1e36e3e PA |
11695 | /* The "set/show range-stepping" show hook. */ |
11696 | ||
11697 | static void | |
11698 | show_range_stepping (struct ui_file *file, int from_tty, | |
11699 | struct cmd_list_element *c, | |
11700 | const char *value) | |
11701 | { | |
11702 | fprintf_filtered (file, | |
11703 | _("Debugger's willingness to use range stepping " | |
11704 | "is %s.\n"), value); | |
11705 | } | |
11706 | ||
11707 | /* The "set/show range-stepping" set hook. */ | |
11708 | ||
11709 | static void | |
11710 | set_range_stepping (char *ignore_args, int from_tty, | |
11711 | struct cmd_list_element *c) | |
11712 | { | |
5d93a237 TT |
11713 | struct remote_state *rs = get_remote_state (); |
11714 | ||
c1e36e3e PA |
11715 | /* Whene enabling, check whether range stepping is actually |
11716 | supported by the target, and warn if not. */ | |
11717 | if (use_range_stepping) | |
11718 | { | |
5d93a237 | 11719 | if (rs->remote_desc != NULL) |
c1e36e3e | 11720 | { |
c1e36e3e PA |
11721 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
11722 | remote_vcont_probe (rs); | |
11723 | ||
11724 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_ENABLE | |
11725 | && rs->supports_vCont.r) | |
11726 | return; | |
11727 | } | |
11728 | ||
11729 | warning (_("Range stepping is not supported by the current target")); | |
11730 | } | |
11731 | } | |
11732 | ||
c906108c | 11733 | void |
fba45db2 | 11734 | _initialize_remote (void) |
c906108c | 11735 | { |
ea9c271d | 11736 | struct remote_state *rs; |
9a7071a8 | 11737 | struct cmd_list_element *cmd; |
6f937416 | 11738 | const char *cmd_name; |
ea9c271d | 11739 | |
0f71a2f6 | 11740 | /* architecture specific data */ |
2bc416ba | 11741 | remote_gdbarch_data_handle = |
23860348 | 11742 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11743 | remote_g_packet_data_handle = |
11744 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11745 | |
ea9c271d DJ |
11746 | /* Initialize the per-target state. At the moment there is only one |
11747 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
11748 | time. */ |
11749 | remote_state = new_remote_state (); | |
ea9c271d | 11750 | |
c906108c SS |
11751 | init_remote_ops (); |
11752 | add_target (&remote_ops); | |
11753 | ||
11754 | init_extended_remote_ops (); | |
11755 | add_target (&extended_remote_ops); | |
cce74817 | 11756 | |
dc8acb97 | 11757 | /* Hook into new objfile notification. */ |
06d3b283 | 11758 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11759 | /* We're no longer interested in notification events of an inferior |
11760 | when it exits. */ | |
11761 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11762 | |
b803fb0f | 11763 | /* Set up signal handlers. */ |
934b9bac | 11764 | async_sigint_remote_token = |
b803fb0f | 11765 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 11766 | async_sigint_remote_twice_token = |
6d549500 | 11767 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11768 | |
c906108c SS |
11769 | #if 0 |
11770 | init_remote_threadtests (); | |
11771 | #endif | |
11772 | ||
722247f1 | 11773 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11774 | /* set/show remote ... */ |
d471ea57 | 11775 | |
1bedd215 | 11776 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11777 | Remote protocol specific variables\n\ |
11778 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11779 | the packets being used"), |
cff3e48b | 11780 | &remote_set_cmdlist, "set remote ", |
23860348 | 11781 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11782 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11783 | Remote protocol specific variables\n\ |
11784 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11785 | the packets being used"), |
cff3e48b | 11786 | &remote_show_cmdlist, "show remote ", |
23860348 | 11787 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11788 | |
1a966eab AC |
11789 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11790 | Compare section data on target to the exec file.\n\ | |
11791 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11792 | &cmdlist); |
11793 | ||
1a966eab AC |
11794 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11795 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11796 | maintenance packet TEXT\n\ |
11797 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11798 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11799 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11800 | terminating `#' character and checksum."), |
c906108c SS |
11801 | &maintenancelist); |
11802 | ||
7915a72c AC |
11803 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11804 | Set whether to send break if interrupted."), _("\ | |
11805 | Show whether to send break if interrupted."), _("\ | |
11806 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11807 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11808 | &setlist, &showlist); |
9a7071a8 JB |
11809 | cmd_name = "remotebreak"; |
11810 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11811 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11812 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11813 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11814 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11815 | ||
11816 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11817 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11818 | _("\ | |
9a7071a8 JB |
11819 | Set interrupt sequence to remote target."), _("\ |
11820 | Show interrupt sequence to remote target."), _("\ | |
11821 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11822 | NULL, show_interrupt_sequence, | |
11823 | &remote_set_cmdlist, | |
11824 | &remote_show_cmdlist); | |
11825 | ||
11826 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11827 | &interrupt_on_connect, _("\ | |
11828 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11829 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11830 | If set, interrupt sequence is sent to remote target."), | |
11831 | NULL, NULL, | |
11832 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11833 | |
23860348 | 11834 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11835 | |
1a966eab AC |
11836 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11837 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11838 | &setlist); |
1a966eab AC |
11839 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11840 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11841 | &showlist); |
11842 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11843 | set_memory_write_packet_size, _("\ |
11844 | Set the maximum number of bytes per memory-write packet.\n\ | |
11845 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11846 | default packet size. The actual limit is further reduced\n\ | |
11847 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11848 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11849 | &remote_set_cmdlist); |
11850 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11851 | set_memory_read_packet_size, _("\ |
11852 | Set the maximum number of bytes per memory-read packet.\n\ | |
11853 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11854 | default packet size. The actual limit is further reduced\n\ | |
11855 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11856 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11857 | &remote_set_cmdlist); |
11858 | add_cmd ("memory-write-packet-size", no_class, | |
11859 | show_memory_write_packet_size, | |
1a966eab | 11860 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11861 | &remote_show_cmdlist); |
11862 | add_cmd ("memory-read-packet-size", no_class, | |
11863 | show_memory_read_packet_size, | |
1a966eab | 11864 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11865 | &remote_show_cmdlist); |
c906108c | 11866 | |
b3f42336 | 11867 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11868 | &remote_hw_watchpoint_limit, _("\ |
11869 | Set the maximum number of target hardware watchpoints."), _("\ | |
11870 | Show the maximum number of target hardware watchpoints."), _("\ | |
11871 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11872 | NULL, NULL, /* FIXME: i18n: The maximum |
11873 | number of target hardware | |
11874 | watchpoints is %s. */ | |
b3f42336 | 11875 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11876 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11877 | &remote_hw_watchpoint_length_limit, _("\ | |
11878 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11879 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11880 | Specify a negative limit for unlimited."), | |
11881 | NULL, NULL, /* FIXME: i18n: The maximum | |
11882 | length (in bytes) of a target | |
11883 | hardware watchpoint is %s. */ | |
11884 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11885 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11886 | &remote_hw_breakpoint_limit, _("\ |
11887 | Set the maximum number of target hardware breakpoints."), _("\ | |
11888 | Show the maximum number of target hardware breakpoints."), _("\ | |
11889 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11890 | NULL, NULL, /* FIXME: i18n: The maximum |
11891 | number of target hardware | |
11892 | breakpoints is %s. */ | |
b3f42336 | 11893 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11894 | |
1b493192 PA |
11895 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
11896 | &remote_address_size, _("\ | |
4d28ad1e AC |
11897 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
11898 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
11899 | NULL, |
11900 | NULL, /* FIXME: i18n: */ | |
11901 | &setlist, &showlist); | |
c906108c | 11902 | |
444abaca | 11903 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11904 | "X", "binary-download", 1); |
0f71a2f6 | 11905 | |
444abaca | 11906 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11907 | "vCont", "verbose-resume", 0); |
506fb367 | 11908 | |
89be2091 DJ |
11909 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11910 | "QPassSignals", "pass-signals", 0); | |
11911 | ||
9b224c5e PA |
11912 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11913 | "QProgramSignals", "program-signals", 0); | |
11914 | ||
444abaca | 11915 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11916 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11917 | |
444abaca | 11918 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11919 | "P", "set-register", 1); |
d471ea57 | 11920 | |
444abaca | 11921 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11922 | "p", "fetch-register", 1); |
b96ec7ac | 11923 | |
444abaca | 11924 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11925 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11926 | |
444abaca | 11927 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11928 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11929 | |
444abaca | 11930 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11931 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11932 | |
444abaca | 11933 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11934 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11935 | |
444abaca | 11936 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11937 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11938 | |
0876f84a DJ |
11939 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11940 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11941 | |
23181151 DJ |
11942 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11943 | "qXfer:features:read", "target-features", 0); | |
11944 | ||
cfa9d6d9 DJ |
11945 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11946 | "qXfer:libraries:read", "library-info", 0); | |
11947 | ||
2268b414 JK |
11948 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11949 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11950 | ||
fd79ecee DJ |
11951 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11952 | "qXfer:memory-map:read", "memory-map", 0); | |
11953 | ||
0e7f50da UW |
11954 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11955 | "qXfer:spu:read", "read-spu-object", 0); | |
11956 | ||
11957 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11958 | "qXfer:spu:write", "write-spu-object", 0); | |
11959 | ||
07e059b5 VP |
11960 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11961 | "qXfer:osdata:read", "osdata", 0); | |
11962 | ||
dc146f7c VP |
11963 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11964 | "qXfer:threads:read", "threads", 0); | |
11965 | ||
4aa995e1 PA |
11966 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11967 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11968 | ||
11969 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11970 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11971 | ||
b3b9301e PA |
11972 | add_packet_config_cmd |
11973 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 11974 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 11975 | |
169081d0 TG |
11976 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11977 | "qXfer:uib:read", "unwind-info-block", 0); | |
11978 | ||
444abaca | 11979 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11980 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11981 | 0); |
11982 | ||
711e434b PM |
11983 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11984 | "qGetTIBAddr", "get-thread-information-block-address", | |
11985 | 0); | |
11986 | ||
40ab02ce MS |
11987 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11988 | "bc", "reverse-continue", 0); | |
11989 | ||
11990 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11991 | "bs", "reverse-step", 0); | |
11992 | ||
be2a5f71 DJ |
11993 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11994 | "qSupported", "supported-packets", 0); | |
11995 | ||
08388c79 DE |
11996 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11997 | "qSearch:memory", "search-memory", 0); | |
11998 | ||
bd3eecc3 PA |
11999 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12000 | "qTStatus", "trace-status", 0); | |
12001 | ||
a6b151f1 DJ |
12002 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12003 | "vFile:open", "hostio-open", 0); | |
12004 | ||
12005 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12006 | "vFile:pread", "hostio-pread", 0); | |
12007 | ||
12008 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12009 | "vFile:pwrite", "hostio-pwrite", 0); | |
12010 | ||
12011 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12012 | "vFile:close", "hostio-close", 0); | |
12013 | ||
12014 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12015 | "vFile:unlink", "hostio-unlink", 0); | |
12016 | ||
b9e7b9c3 UW |
12017 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12018 | "vFile:readlink", "hostio-readlink", 0); | |
12019 | ||
2d717e4f DJ |
12020 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12021 | "vAttach", "attach", 0); | |
12022 | ||
12023 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12024 | "vRun", "run", 0); | |
12025 | ||
a6f3e723 SL |
12026 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12027 | "QStartNoAckMode", "noack", 0); | |
12028 | ||
82f73884 PA |
12029 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12030 | "vKill", "kill", 0); | |
12031 | ||
0b16c5cf PA |
12032 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12033 | "qAttached", "query-attached", 0); | |
12034 | ||
782b2b07 | 12035 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12036 | "ConditionalTracepoints", |
12037 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12038 | |
12039 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12040 | "ConditionalBreakpoints", | |
12041 | "conditional-breakpoints", 0); | |
12042 | ||
d3ce09f5 SS |
12043 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12044 | "BreakpointCommands", | |
12045 | "breakpoint-commands", 0); | |
12046 | ||
7a697b8d SS |
12047 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12048 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12049 | |
409873ef SS |
12050 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12051 | "TracepointSource", "TracepointSource", 0); | |
12052 | ||
d914c394 SS |
12053 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12054 | "QAllow", "allow", 0); | |
12055 | ||
0fb4aa4b PA |
12056 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12057 | "StaticTracepoints", "static-tracepoints", 0); | |
12058 | ||
1e4d1764 YQ |
12059 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12060 | "InstallInTrace", "install-in-trace", 0); | |
12061 | ||
0fb4aa4b PA |
12062 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12063 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12064 | ||
78d85199 YQ |
12065 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12066 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12067 | ||
03583c20 UW |
12068 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12069 | "QDisableRandomization", "disable-randomization", 0); | |
12070 | ||
d1feda86 YQ |
12071 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12072 | "QAgent", "agent", 0); | |
12073 | ||
f6f899bf HAQ |
12074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12075 | "QTBuffer:size", "trace-buffer-size", 0); | |
12076 | ||
9accd112 MM |
12077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12078 | "Qbtrace:off", "disable-btrace", 0); | |
12079 | ||
12080 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12081 | "Qbtrace:bts", "enable-btrace", 0); | |
12082 | ||
12083 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12084 | "qXfer:btrace", "read-btrace", 0); | |
12085 | ||
37a105a1 DJ |
12086 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12087 | Z sub-packet has its own set and show commands, but users may | |
12088 | have sets to this variable in their .gdbinit files (or in their | |
12089 | documentation). */ | |
e9e68a56 | 12090 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12091 | &remote_Z_packet_detect, _("\ |
12092 | Set use of remote protocol `Z' packets"), _("\ | |
12093 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12094 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12095 | packets."), |
e9e68a56 | 12096 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12097 | show_remote_protocol_Z_packet_cmd, |
12098 | /* FIXME: i18n: Use of remote protocol | |
12099 | `Z' packets is %s. */ | |
e9e68a56 | 12100 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12101 | |
a6b151f1 DJ |
12102 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12103 | Manipulate files on the remote system\n\ | |
12104 | Transfer files to and from the remote target system."), | |
12105 | &remote_cmdlist, "remote ", | |
12106 | 0 /* allow-unknown */, &cmdlist); | |
12107 | ||
12108 | add_cmd ("put", class_files, remote_put_command, | |
12109 | _("Copy a local file to the remote system."), | |
12110 | &remote_cmdlist); | |
12111 | ||
12112 | add_cmd ("get", class_files, remote_get_command, | |
12113 | _("Copy a remote file to the local system."), | |
12114 | &remote_cmdlist); | |
12115 | ||
12116 | add_cmd ("delete", class_files, remote_delete_command, | |
12117 | _("Delete a remote file."), | |
12118 | &remote_cmdlist); | |
12119 | ||
2d717e4f DJ |
12120 | remote_exec_file = xstrdup (""); |
12121 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12122 | &remote_exec_file, _("\ | |
12123 | Set the remote pathname for \"run\""), _("\ | |
12124 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12125 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12126 | ||
c1e36e3e PA |
12127 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12128 | &use_range_stepping, _("\ | |
12129 | Enable or disable range stepping."), _("\ | |
12130 | Show whether target-assisted range stepping is enabled."), _("\ | |
12131 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12132 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12133 | of issuing multiple single-steps. This speeds up source level\n\ | |
12134 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12135 | stepping is supported by the target. The default is on."), | |
12136 | set_range_stepping, | |
12137 | show_range_stepping, | |
12138 | &setlist, | |
12139 | &showlist); | |
12140 | ||
449092f6 CV |
12141 | /* Eventually initialize fileio. See fileio.c */ |
12142 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
12143 | |
12144 | /* Take advantage of the fact that the LWP field is not used, to tag | |
12145 | special ptids with it set to != 0. */ | |
82f73884 PA |
12146 | magic_null_ptid = ptid_build (42000, 1, -1); |
12147 | not_sent_ptid = ptid_build (42000, 1, -2); | |
12148 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
12149 | |
12150 | target_buf_size = 2048; | |
12151 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12152 | } |
10760264 | 12153 |