Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
c906108c | 47 | |
9846de1b | 48 | #include <sys/time.h> |
c906108c | 49 | |
43ff13b4 | 50 | #include "event-loop.h" |
c2c6d25f | 51 | #include "event-top.h" |
2acceee2 | 52 | #include "inf-loop.h" |
43ff13b4 | 53 | |
c906108c SS |
54 | #include <signal.h> |
55 | #include "serial.h" | |
56 | ||
6240bebf MS |
57 | #include "gdbcore.h" /* for exec_bfd */ |
58 | ||
449092f6 | 59 | #include "remote-fileio.h" |
a6b151f1 | 60 | #include "gdb/fileio.h" |
53ce3c39 | 61 | #include <sys/stat.h> |
dc146f7c | 62 | #include "xml-support.h" |
449092f6 | 63 | |
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
35b1e5cc SS |
66 | #include "tracepoint.h" |
67 | #include "ax.h" | |
68 | #include "ax-gdb.h" | |
d1feda86 | 69 | #include "agent.h" |
9accd112 | 70 | #include "btrace.h" |
35b1e5cc | 71 | |
0df8b418 | 72 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
73 | static char *target_buf; |
74 | static long target_buf_size; | |
35b1e5cc | 75 | |
6765f3e5 DJ |
76 | /* The size to align memory write packets, when practical. The protocol |
77 | does not guarantee any alignment, and gdb will generate short | |
78 | writes and unaligned writes, but even as a best-effort attempt this | |
79 | can improve bulk transfers. For instance, if a write is misaligned | |
80 | relative to the target's data bus, the stub may need to make an extra | |
81 | round trip fetching data from the target. This doesn't make a | |
82 | huge difference, but it's easy to do, so we try to be helpful. | |
83 | ||
84 | The alignment chosen is arbitrary; usually data bus width is | |
85 | important here, not the possibly larger cache line size. */ | |
86 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
87 | ||
23860348 | 88 | /* Prototypes for local functions. */ |
934b9bac | 89 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 90 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 91 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 92 | int forever, int *is_notif); |
6426a772 | 93 | |
934b9bac JK |
94 | static void async_handle_remote_sigint (int); |
95 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 96 | |
a14ed312 | 97 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 98 | |
f32dbf8c MM |
99 | static void remote_prepare_to_store (struct target_ops *self, |
100 | struct regcache *regcache); | |
c906108c | 101 | |
014f9477 TT |
102 | static void remote_open_1 (const char *, int, struct target_ops *, |
103 | int extended_p); | |
c906108c | 104 | |
de90e03d | 105 | static void remote_close (struct target_ops *self); |
c906108c | 106 | |
136d6dae | 107 | static void remote_mourn (struct target_ops *ops); |
c906108c | 108 | |
a14ed312 | 109 | static void extended_remote_restart (void); |
c906108c | 110 | |
136d6dae | 111 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 112 | |
6d820c5c | 113 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 114 | |
a14ed312 | 115 | static int readchar (int timeout); |
c906108c | 116 | |
c33e31fd PA |
117 | static void remote_serial_write (const char *str, int len); |
118 | ||
7d85a9c0 | 119 | static void remote_kill (struct target_ops *ops); |
c906108c | 120 | |
6a109b6b | 121 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 122 | |
6a109b6b | 123 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 124 | |
6a3753b3 | 125 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 126 | |
934b9bac | 127 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 128 | |
a14ed312 | 129 | static void interrupt_query (void); |
c906108c | 130 | |
79d7f229 PA |
131 | static void set_general_thread (struct ptid ptid); |
132 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 133 | |
a14ed312 | 134 | static void get_offsets (void); |
c906108c | 135 | |
6d820c5c DJ |
136 | static void skip_frame (void); |
137 | ||
138 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 139 | |
a14ed312 | 140 | static int hexnumlen (ULONGEST num); |
c906108c | 141 | |
a14ed312 | 142 | static void init_remote_ops (void); |
c906108c | 143 | |
a14ed312 | 144 | static void init_extended_remote_ops (void); |
c906108c | 145 | |
1eab8a48 | 146 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 147 | |
a14ed312 | 148 | static int stubhex (int ch); |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumstr (char *, ULONGEST); |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 153 | |
a14ed312 | 154 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 155 | |
baa336ce | 156 | static void print_packet (const char *); |
c906108c | 157 | |
a14ed312 | 158 | static void compare_sections_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void packet_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 163 | |
39f77062 | 164 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 165 | |
baa336ce | 166 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 167 | |
a14ed312 | 168 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 169 | |
5a2468f5 | 170 | struct packet_config; |
5a2468f5 | 171 | |
a14ed312 | 172 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 173 | |
bb572ddd DJ |
174 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
175 | int from_tty, | |
176 | struct cmd_list_element *c, | |
177 | const char *value); | |
178 | ||
82f73884 PA |
179 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
180 | static ptid_t read_ptid (char *buf, char **obuf); | |
181 | ||
c378d69d | 182 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 183 | |
d5551862 | 184 | struct remote_state; |
8bd200f1 TT |
185 | static int remote_get_trace_status (struct target_ops *self, |
186 | struct trace_status *ts); | |
d5551862 | 187 | |
ab6617cc TT |
188 | static int remote_upload_tracepoints (struct target_ops *self, |
189 | struct uploaded_tp **utpp); | |
00bf0b85 | 190 | |
181e3713 TT |
191 | static int remote_upload_trace_state_variables (struct target_ops *self, |
192 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 193 | |
c8d104ad PA |
194 | static void remote_query_supported (void); |
195 | ||
36d25514 | 196 | static void remote_check_symbols (void); |
c8d104ad | 197 | |
a14ed312 | 198 | void _initialize_remote (void); |
c906108c | 199 | |
74531fed | 200 | struct stop_reply; |
74531fed | 201 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 202 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 203 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 204 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
205 | static int peek_stop_reply (ptid_t ptid); |
206 | ||
207 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 208 | |
e3594fd1 | 209 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 210 | |
d962ef82 DJ |
211 | static int remote_read_description_p (struct target_ops *target); |
212 | ||
176a6961 | 213 | static void remote_console_output (char *msg); |
dde08ee1 | 214 | |
efcc2da7 | 215 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 216 | |
78eff0ec | 217 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 218 | |
f4abbc16 MM |
219 | static void remote_btrace_reset (void); |
220 | ||
a6b151f1 DJ |
221 | /* For "remote". */ |
222 | ||
223 | static struct cmd_list_element *remote_cmdlist; | |
224 | ||
bb572ddd DJ |
225 | /* For "set remote" and "show remote". */ |
226 | ||
227 | static struct cmd_list_element *remote_set_cmdlist; | |
228 | static struct cmd_list_element *remote_show_cmdlist; | |
229 | ||
d458bd84 PA |
230 | /* Stub vCont actions support. |
231 | ||
232 | Each field is a boolean flag indicating whether the stub reports | |
233 | support for the corresponding action. */ | |
234 | ||
235 | struct vCont_action_support | |
236 | { | |
237 | /* vCont;t */ | |
238 | int t; | |
c1e36e3e PA |
239 | |
240 | /* vCont;r */ | |
241 | int r; | |
d458bd84 PA |
242 | }; |
243 | ||
c1e36e3e PA |
244 | /* Controls whether GDB is willing to use range stepping. */ |
245 | ||
246 | static int use_range_stepping = 1; | |
247 | ||
0d031856 TT |
248 | #define OPAQUETHREADBYTES 8 |
249 | ||
250 | /* a 64 bit opaque identifier */ | |
251 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
252 | ||
253 | /* About this many threadisds fit in a packet. */ | |
254 | ||
255 | #define MAXTHREADLISTRESULTS 32 | |
256 | ||
ea9c271d DJ |
257 | /* Description of the remote protocol state for the currently |
258 | connected target. This is per-target state, and independent of the | |
259 | selected architecture. */ | |
260 | ||
261 | struct remote_state | |
262 | { | |
263 | /* A buffer to use for incoming packets, and its current size. The | |
264 | buffer is grown dynamically for larger incoming packets. | |
265 | Outgoing packets may also be constructed in this buffer. | |
266 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
267 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
268 | packets. */ | |
269 | char *buf; | |
270 | long buf_size; | |
be2a5f71 | 271 | |
1e51243a PA |
272 | /* True if we're going through initial connection setup (finding out |
273 | about the remote side's threads, relocating symbols, etc.). */ | |
274 | int starting_up; | |
275 | ||
be2a5f71 DJ |
276 | /* If we negotiated packet size explicitly (and thus can bypass |
277 | heuristics for the largest packet size that will not overflow | |
278 | a buffer in the stub), this will be set to that packet size. | |
279 | Otherwise zero, meaning to use the guessed size. */ | |
280 | long explicit_packet_size; | |
2d717e4f DJ |
281 | |
282 | /* remote_wait is normally called when the target is running and | |
283 | waits for a stop reply packet. But sometimes we need to call it | |
284 | when the target is already stopped. We can send a "?" packet | |
285 | and have remote_wait read the response. Or, if we already have | |
286 | the response, we can stash it in BUF and tell remote_wait to | |
287 | skip calling getpkt. This flag is set when BUF contains a | |
288 | stop reply packet and the target is not waiting. */ | |
289 | int cached_wait_status; | |
a6f3e723 SL |
290 | |
291 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
292 | expect acks from each other. The connection is assumed to be | |
293 | reliable. */ | |
294 | int noack_mode; | |
82f73884 PA |
295 | |
296 | /* True if we're connected in extended remote mode. */ | |
297 | int extended; | |
298 | ||
e24a49d8 PA |
299 | /* True if we resumed the target and we're waiting for the target to |
300 | stop. In the mean time, we can't start another command/query. | |
301 | The remote server wouldn't be ready to process it, so we'd | |
302 | timeout waiting for a reply that would never come and eventually | |
303 | we'd close the connection. This can happen in asynchronous mode | |
304 | because we allow GDB commands while the target is running. */ | |
305 | int waiting_for_stop_reply; | |
74531fed | 306 | |
d458bd84 PA |
307 | /* The status of the stub support for the various vCont actions. */ |
308 | struct vCont_action_support supports_vCont; | |
782b2b07 | 309 | |
3a29589a DJ |
310 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
311 | responded to that. */ | |
312 | int ctrlc_pending_p; | |
5d93a237 TT |
313 | |
314 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
315 | remote_open knows that we don't have a file open when the program | |
316 | starts. */ | |
317 | struct serial *remote_desc; | |
47f8a51d TT |
318 | |
319 | /* These are the threads which we last sent to the remote system. The | |
320 | TID member will be -1 for all or -2 for not sent yet. */ | |
321 | ptid_t general_thread; | |
322 | ptid_t continue_thread; | |
262e1174 TT |
323 | |
324 | /* This is the traceframe which we last selected on the remote system. | |
325 | It will be -1 if no traceframe is selected. */ | |
326 | int remote_traceframe_number; | |
747dc59d TT |
327 | |
328 | char *last_pass_packet; | |
5e4a05c4 TT |
329 | |
330 | /* The last QProgramSignals packet sent to the target. We bypass | |
331 | sending a new program signals list down to the target if the new | |
332 | packet is exactly the same as the last we sent. IOW, we only let | |
333 | the target know about program signals list changes. */ | |
334 | char *last_program_signals_packet; | |
b73be471 TT |
335 | |
336 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
337 | |
338 | int last_sent_step; | |
8e88304f TT |
339 | |
340 | char *finished_object; | |
341 | char *finished_annex; | |
342 | ULONGEST finished_offset; | |
b80fafe3 TT |
343 | |
344 | /* Should we try the 'ThreadInfo' query packet? | |
345 | ||
346 | This variable (NOT available to the user: auto-detect only!) | |
347 | determines whether GDB will use the new, simpler "ThreadInfo" | |
348 | query or the older, more complex syntax for thread queries. | |
349 | This is an auto-detect variable (set to true at each connect, | |
350 | and set to false when the target fails to recognize it). */ | |
351 | int use_threadinfo_query; | |
352 | int use_threadextra_query; | |
88b496c3 | 353 | |
ee154bee TT |
354 | /* This is set to the data address of the access causing the target |
355 | to stop for a watchpoint. */ | |
356 | CORE_ADDR remote_watch_data_address; | |
357 | ||
f7e6eed5 PA |
358 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
359 | enum target_stop_reason stop_reason; | |
0d031856 TT |
360 | |
361 | threadref echo_nextthread; | |
362 | threadref nextthread; | |
363 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
364 | |
365 | /* The state of remote notification. */ | |
366 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
367 | |
368 | /* The branch trace configuration. */ | |
369 | struct btrace_config btrace_config; | |
ea9c271d DJ |
370 | }; |
371 | ||
dc146f7c VP |
372 | /* Private data that we'll store in (struct thread_info)->private. */ |
373 | struct private_thread_info | |
374 | { | |
375 | char *extra; | |
376 | int core; | |
377 | }; | |
378 | ||
379 | static void | |
380 | free_private_thread_info (struct private_thread_info *info) | |
381 | { | |
382 | xfree (info->extra); | |
383 | xfree (info); | |
384 | } | |
385 | ||
ea9c271d DJ |
386 | /* This data could be associated with a target, but we do not always |
387 | have access to the current target when we need it, so for now it is | |
388 | static. This will be fine for as long as only one target is in use | |
389 | at a time. */ | |
cf792862 | 390 | static struct remote_state *remote_state; |
ea9c271d DJ |
391 | |
392 | static struct remote_state * | |
0b83947e | 393 | get_remote_state_raw (void) |
ea9c271d | 394 | { |
cf792862 TT |
395 | return remote_state; |
396 | } | |
397 | ||
398 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
399 | return it. */ | |
400 | ||
401 | static struct remote_state * | |
402 | new_remote_state (void) | |
403 | { | |
404 | struct remote_state *result = XCNEW (struct remote_state); | |
405 | ||
406 | /* The default buffer size is unimportant; it will be expanded | |
407 | whenever a larger buffer is needed. */ | |
408 | result->buf_size = 400; | |
409 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 410 | result->remote_traceframe_number = -1; |
b73be471 | 411 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
412 | |
413 | return result; | |
ea9c271d DJ |
414 | } |
415 | ||
416 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 417 | |
ad10f812 AC |
418 | struct packet_reg |
419 | { | |
420 | long offset; /* Offset into G packet. */ | |
421 | long regnum; /* GDB's internal register number. */ | |
422 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 423 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 424 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 425 | at present. */ |
f5656ead | 426 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 427 | at present. */ |
ad10f812 AC |
428 | }; |
429 | ||
ea9c271d | 430 | struct remote_arch_state |
d01949b6 | 431 | { |
ad10f812 AC |
432 | /* Description of the remote protocol registers. */ |
433 | long sizeof_g_packet; | |
b323314b AC |
434 | |
435 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 436 | (making an array gdbarch_num_regs in size). */ |
b323314b | 437 | struct packet_reg *regs; |
ad10f812 | 438 | |
d01949b6 AC |
439 | /* This is the size (in chars) of the first response to the ``g'' |
440 | packet. It is used as a heuristic when determining the maximum | |
441 | size of memory-read and memory-write packets. A target will | |
442 | typically only reserve a buffer large enough to hold the ``g'' | |
443 | packet. The size does not include packet overhead (headers and | |
23860348 | 444 | trailers). */ |
d01949b6 AC |
445 | long actual_register_packet_size; |
446 | ||
447 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 448 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
449 | long remote_packet_size; |
450 | }; | |
451 | ||
35b1e5cc SS |
452 | /* Utility: generate error from an incoming stub packet. */ |
453 | static void | |
454 | trace_error (char *buf) | |
455 | { | |
456 | if (*buf++ != 'E') | |
457 | return; /* not an error msg */ | |
458 | switch (*buf) | |
459 | { | |
460 | case '1': /* malformed packet error */ | |
461 | if (*++buf == '0') /* general case: */ | |
462 | error (_("remote.c: error in outgoing packet.")); | |
463 | else | |
464 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
465 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
466 | default: |
467 | error (_("Target returns error code '%s'."), buf); | |
468 | } | |
469 | } | |
470 | ||
471 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
472 | static char * | |
473 | remote_get_noisy_reply (char **buf_p, | |
474 | long *sizeof_buf) | |
475 | { | |
476 | do /* Loop on reply from remote stub. */ | |
477 | { | |
478 | char *buf; | |
a744cf53 | 479 | |
0df8b418 | 480 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
481 | getpkt (buf_p, sizeof_buf, 0); |
482 | buf = *buf_p; | |
ad91cd99 | 483 | if (buf[0] == 'E') |
35b1e5cc | 484 | trace_error (buf); |
61012eef | 485 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
486 | { |
487 | ULONGEST ul; | |
488 | CORE_ADDR from, to, org_to; | |
489 | char *p, *pp; | |
490 | int adjusted_size = 0; | |
7556d4a4 | 491 | int relocated = 0; |
dde08ee1 PA |
492 | |
493 | p = buf + strlen ("qRelocInsn:"); | |
494 | pp = unpack_varlen_hex (p, &ul); | |
495 | if (*pp != ';') | |
cb91c06a | 496 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
497 | from = ul; |
498 | ||
499 | p = pp + 1; | |
a9cbf802 | 500 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
501 | to = ul; |
502 | ||
503 | org_to = to; | |
504 | ||
492d29ea | 505 | TRY |
dde08ee1 | 506 | { |
f5656ead | 507 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 508 | relocated = 1; |
dde08ee1 | 509 | } |
492d29ea | 510 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
511 | { |
512 | if (ex.error == MEMORY_ERROR) | |
513 | { | |
514 | /* Propagate memory errors silently back to the | |
515 | target. The stub may have limited the range of | |
516 | addresses we can write to, for example. */ | |
517 | } | |
518 | else | |
519 | { | |
520 | /* Something unexpectedly bad happened. Be verbose | |
521 | so we can tell what, and propagate the error back | |
522 | to the stub, so it doesn't get stuck waiting for | |
523 | a response. */ | |
524 | exception_fprintf (gdb_stderr, ex, | |
525 | _("warning: relocating instruction: ")); | |
526 | } | |
527 | putpkt ("E01"); | |
528 | } | |
492d29ea | 529 | END_CATCH |
7556d4a4 PA |
530 | |
531 | if (relocated) | |
dde08ee1 PA |
532 | { |
533 | adjusted_size = to - org_to; | |
534 | ||
bba74b36 | 535 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
536 | putpkt (buf); |
537 | } | |
dde08ee1 | 538 | } |
ad91cd99 | 539 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
540 | remote_console_output (buf + 1); /* 'O' message from stub */ |
541 | else | |
0df8b418 | 542 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
543 | } |
544 | while (1); | |
545 | } | |
3c3bea1c | 546 | |
d01949b6 AC |
547 | /* Handle for retreving the remote protocol data from gdbarch. */ |
548 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
549 | ||
ea9c271d DJ |
550 | static struct remote_arch_state * |
551 | get_remote_arch_state (void) | |
d01949b6 | 552 | { |
f5656ead | 553 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
554 | } |
555 | ||
0b83947e DJ |
556 | /* Fetch the global remote target state. */ |
557 | ||
558 | static struct remote_state * | |
559 | get_remote_state (void) | |
560 | { | |
561 | /* Make sure that the remote architecture state has been | |
562 | initialized, because doing so might reallocate rs->buf. Any | |
563 | function which calls getpkt also needs to be mindful of changes | |
564 | to rs->buf, but this call limits the number of places which run | |
565 | into trouble. */ | |
566 | get_remote_arch_state (); | |
567 | ||
568 | return get_remote_state_raw (); | |
569 | } | |
570 | ||
74ca34ce DJ |
571 | static int |
572 | compare_pnums (const void *lhs_, const void *rhs_) | |
573 | { | |
574 | const struct packet_reg * const *lhs = lhs_; | |
575 | const struct packet_reg * const *rhs = rhs_; | |
576 | ||
577 | if ((*lhs)->pnum < (*rhs)->pnum) | |
578 | return -1; | |
579 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
580 | return 0; | |
581 | else | |
582 | return 1; | |
583 | } | |
584 | ||
c21236dc PA |
585 | static int |
586 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 587 | { |
74ca34ce | 588 | int regnum, num_remote_regs, offset; |
74ca34ce | 589 | struct packet_reg **remote_regs; |
ea9c271d | 590 | |
4a22f64d | 591 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 592 | { |
c21236dc | 593 | struct packet_reg *r = ®s[regnum]; |
baef701f | 594 | |
4a22f64d | 595 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
596 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
597 | r->pnum = -1; | |
598 | else | |
599 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
600 | ||
b323314b | 601 | r->regnum = regnum; |
74ca34ce DJ |
602 | } |
603 | ||
604 | /* Define the g/G packet format as the contents of each register | |
605 | with a remote protocol number, in order of ascending protocol | |
606 | number. */ | |
607 | ||
4a22f64d | 608 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 609 | * sizeof (struct packet_reg *)); |
f57d151a | 610 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 611 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 612 | regnum++) |
c21236dc PA |
613 | if (regs[regnum].pnum != -1) |
614 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 615 | |
74ca34ce DJ |
616 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
617 | compare_pnums); | |
618 | ||
619 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
620 | { | |
621 | remote_regs[regnum]->in_g_packet = 1; | |
622 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 623 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
624 | } |
625 | ||
c21236dc PA |
626 | return offset; |
627 | } | |
628 | ||
629 | /* Given the architecture described by GDBARCH, return the remote | |
630 | protocol register's number and the register's offset in the g/G | |
631 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
632 | If the target does not have a mapping for REGNUM, return false, | |
633 | otherwise, return true. */ | |
634 | ||
635 | int | |
636 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
637 | int *pnum, int *poffset) | |
638 | { | |
639 | int sizeof_g_packet; | |
640 | struct packet_reg *regs; | |
641 | struct cleanup *old_chain; | |
642 | ||
643 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
644 | ||
645 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
646 | old_chain = make_cleanup (xfree, regs); | |
647 | ||
648 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
649 | ||
650 | *pnum = regs[regnum].pnum; | |
651 | *poffset = regs[regnum].offset; | |
652 | ||
653 | do_cleanups (old_chain); | |
654 | ||
655 | return *pnum != -1; | |
656 | } | |
657 | ||
658 | static void * | |
659 | init_remote_state (struct gdbarch *gdbarch) | |
660 | { | |
661 | struct remote_state *rs = get_remote_state_raw (); | |
662 | struct remote_arch_state *rsa; | |
663 | ||
664 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
665 | ||
666 | /* Use the architecture to build a regnum<->pnum table, which will be | |
667 | 1:1 unless a feature set specifies otherwise. */ | |
668 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
669 | gdbarch_num_regs (gdbarch), | |
670 | struct packet_reg); | |
671 | ||
74ca34ce DJ |
672 | /* Record the maximum possible size of the g packet - it may turn out |
673 | to be smaller. */ | |
c21236dc | 674 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 675 | |
0df8b418 | 676 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
677 | remote stubs have a hardwired buffer size of 400 bytes |
678 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
679 | as the maximum packet-size to ensure that the packet and an extra | |
680 | NUL character can always fit in the buffer. This stops GDB | |
681 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
682 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
683 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 684 | |
ea9c271d DJ |
685 | /* This one is filled in when a ``g'' packet is received. */ |
686 | rsa->actual_register_packet_size = 0; | |
687 | ||
688 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
689 | default, adjust the size accordingly. Remember that each byte is |
690 | encoded as two characters. 32 is the overhead for the packet | |
691 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 692 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 693 | little. */ |
ea9c271d DJ |
694 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
695 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 696 | |
ea9c271d DJ |
697 | /* Make sure that the packet buffer is plenty big enough for |
698 | this architecture. */ | |
699 | if (rs->buf_size < rsa->remote_packet_size) | |
700 | { | |
701 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 702 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 703 | } |
6d820c5c | 704 | |
ea9c271d DJ |
705 | return rsa; |
706 | } | |
707 | ||
708 | /* Return the current allowed size of a remote packet. This is | |
709 | inferred from the current architecture, and should be used to | |
710 | limit the length of outgoing packets. */ | |
711 | static long | |
712 | get_remote_packet_size (void) | |
713 | { | |
be2a5f71 | 714 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
715 | struct remote_arch_state *rsa = get_remote_arch_state (); |
716 | ||
be2a5f71 DJ |
717 | if (rs->explicit_packet_size) |
718 | return rs->explicit_packet_size; | |
719 | ||
ea9c271d | 720 | return rsa->remote_packet_size; |
d01949b6 AC |
721 | } |
722 | ||
ad10f812 | 723 | static struct packet_reg * |
ea9c271d | 724 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 725 | { |
f5656ead | 726 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
727 | return NULL; |
728 | else | |
ad10f812 | 729 | { |
ea9c271d | 730 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 731 | |
b323314b AC |
732 | gdb_assert (r->regnum == regnum); |
733 | return r; | |
ad10f812 | 734 | } |
ad10f812 AC |
735 | } |
736 | ||
737 | static struct packet_reg * | |
ea9c271d | 738 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 739 | { |
b323314b | 740 | int i; |
a744cf53 | 741 | |
f5656ead | 742 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 743 | { |
ea9c271d | 744 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 745 | |
b323314b AC |
746 | if (r->pnum == pnum) |
747 | return r; | |
ad10f812 AC |
748 | } |
749 | return NULL; | |
d01949b6 AC |
750 | } |
751 | ||
c906108c SS |
752 | static struct target_ops remote_ops; |
753 | ||
754 | static struct target_ops extended_remote_ops; | |
755 | ||
6426a772 JM |
756 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
757 | ``forever'' still use the normal timeout mechanism. This is | |
758 | currently used by the ASYNC code to guarentee that target reads | |
759 | during the initial connect always time-out. Once getpkt has been | |
760 | modified to return a timeout indication and, in turn | |
761 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 762 | this can go away. */ |
6426a772 JM |
763 | static int wait_forever_enabled_p = 1; |
764 | ||
9a7071a8 JB |
765 | /* Allow the user to specify what sequence to send to the remote |
766 | when he requests a program interruption: Although ^C is usually | |
767 | what remote systems expect (this is the default, here), it is | |
768 | sometimes preferable to send a break. On other systems such | |
769 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
770 | is required in order to interrupt the execution. */ | |
771 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
772 | const char interrupt_sequence_break[] = "BREAK"; | |
773 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 774 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
775 | { |
776 | interrupt_sequence_control_c, | |
777 | interrupt_sequence_break, | |
778 | interrupt_sequence_break_g, | |
779 | NULL | |
780 | }; | |
781 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
782 | ||
783 | static void | |
784 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
785 | struct cmd_list_element *c, | |
786 | const char *value) | |
787 | { | |
788 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
789 | fprintf_filtered (file, | |
790 | _("Send the ASCII ETX character (Ctrl-c) " | |
791 | "to the remote target to interrupt the " | |
792 | "execution of the program.\n")); | |
793 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
794 | fprintf_filtered (file, | |
795 | _("send a break signal to the remote target " | |
796 | "to interrupt the execution of the program.\n")); | |
797 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
798 | fprintf_filtered (file, | |
799 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
800 | "the remote target to interrupt the execution " | |
801 | "of Linux kernel.\n")); | |
802 | else | |
803 | internal_error (__FILE__, __LINE__, | |
804 | _("Invalid value for interrupt_sequence_mode: %s."), | |
805 | interrupt_sequence_mode); | |
806 | } | |
6426a772 | 807 | |
9a7071a8 JB |
808 | /* This boolean variable specifies whether interrupt_sequence is sent |
809 | to the remote target when gdb connects to it. | |
810 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
811 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
812 | static int interrupt_on_connect = 0; | |
c906108c | 813 | |
9a7071a8 JB |
814 | /* This variable is used to implement the "set/show remotebreak" commands. |
815 | Since these commands are now deprecated in favor of "set/show remote | |
816 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
817 | static int remote_break; |
818 | ||
9a7071a8 JB |
819 | static void |
820 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
821 | { | |
822 | if (remote_break) | |
823 | interrupt_sequence_mode = interrupt_sequence_break; | |
824 | else | |
825 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
826 | } | |
827 | ||
828 | static void | |
829 | show_remotebreak (struct ui_file *file, int from_tty, | |
830 | struct cmd_list_element *c, | |
831 | const char *value) | |
832 | { | |
833 | } | |
834 | ||
c906108c SS |
835 | /* This variable sets the number of bits in an address that are to be |
836 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 837 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
838 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
839 | initial implementation of remote.c restricted the address sent in | |
840 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
841 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
842 | address was never sent. Since fixing this bug may cause a break in | |
843 | some remote targets this variable is principly provided to | |
23860348 | 844 | facilitate backward compatibility. */ |
c906108c | 845 | |
883b9c6c | 846 | static unsigned int remote_address_size; |
c906108c | 847 | |
75c99385 PA |
848 | /* Temporary to track who currently owns the terminal. See |
849 | remote_terminal_* for more details. */ | |
6426a772 JM |
850 | |
851 | static int remote_async_terminal_ours_p; | |
852 | ||
2d717e4f DJ |
853 | /* The executable file to use for "run" on the remote side. */ |
854 | ||
855 | static char *remote_exec_file = ""; | |
856 | ||
11cf8741 | 857 | \f |
11cf8741 | 858 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
859 | memory read/write packet. MIN (rsa->remote_packet_size, |
860 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 861 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
862 | (speed up transfers). The variables ``preferred_*'' (the user |
863 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 864 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
865 | |
866 | struct memory_packet_config | |
867 | { | |
868 | char *name; | |
869 | long size; | |
870 | int fixed_p; | |
871 | }; | |
872 | ||
873 | /* Compute the current size of a read/write packet. Since this makes | |
874 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
875 | ||
876 | static long | |
877 | get_memory_packet_size (struct memory_packet_config *config) | |
878 | { | |
d01949b6 | 879 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
880 | struct remote_arch_state *rsa = get_remote_arch_state (); |
881 | ||
11cf8741 JM |
882 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
883 | law?) that some hosts don't cope very well with large alloca() | |
884 | calls. Eventually the alloca() code will be replaced by calls to | |
885 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 886 | be lifted or removed. */ |
11cf8741 JM |
887 | #ifndef MAX_REMOTE_PACKET_SIZE |
888 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
889 | #endif | |
3de11b2e | 890 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 891 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 892 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
893 | #endif |
894 | long what_they_get; | |
895 | if (config->fixed_p) | |
896 | { | |
897 | if (config->size <= 0) | |
898 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
899 | else | |
900 | what_they_get = config->size; | |
901 | } | |
902 | else | |
903 | { | |
ea9c271d | 904 | what_they_get = get_remote_packet_size (); |
23860348 | 905 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
906 | if (config->size > 0 |
907 | && what_they_get > config->size) | |
908 | what_they_get = config->size; | |
be2a5f71 DJ |
909 | |
910 | /* Limit it to the size of the targets ``g'' response unless we have | |
911 | permission from the stub to use a larger packet size. */ | |
912 | if (rs->explicit_packet_size == 0 | |
913 | && rsa->actual_register_packet_size > 0 | |
914 | && what_they_get > rsa->actual_register_packet_size) | |
915 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
916 | } |
917 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
918 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
919 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
920 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
921 | |
922 | /* Make sure there is room in the global buffer for this packet | |
923 | (including its trailing NUL byte). */ | |
924 | if (rs->buf_size < what_they_get + 1) | |
925 | { | |
926 | rs->buf_size = 2 * what_they_get; | |
927 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
928 | } | |
929 | ||
11cf8741 JM |
930 | return what_they_get; |
931 | } | |
932 | ||
0df8b418 | 933 | /* Update the size of a read/write packet. If they user wants |
23860348 | 934 | something really big then do a sanity check. */ |
11cf8741 JM |
935 | |
936 | static void | |
937 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
938 | { | |
939 | int fixed_p = config->fixed_p; | |
940 | long size = config->size; | |
a744cf53 | 941 | |
11cf8741 | 942 | if (args == NULL) |
8a3fe4f8 | 943 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
944 | else if (strcmp (args, "hard") == 0 |
945 | || strcmp (args, "fixed") == 0) | |
946 | fixed_p = 1; | |
947 | else if (strcmp (args, "soft") == 0 | |
948 | || strcmp (args, "limit") == 0) | |
949 | fixed_p = 0; | |
950 | else | |
951 | { | |
952 | char *end; | |
a744cf53 | 953 | |
11cf8741 JM |
954 | size = strtoul (args, &end, 0); |
955 | if (args == end) | |
8a3fe4f8 | 956 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
957 | #if 0 |
958 | /* Instead of explicitly capping the size of a packet to | |
959 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
960 | instead allowed to set the size to something arbitrarily | |
23860348 | 961 | large. */ |
11cf8741 | 962 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 963 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
964 | #endif |
965 | } | |
23860348 | 966 | /* Extra checks? */ |
11cf8741 JM |
967 | if (fixed_p && !config->fixed_p) |
968 | { | |
e2e0b3e5 AC |
969 | if (! query (_("The target may not be able to correctly handle a %s\n" |
970 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 971 | config->name, size)) |
8a3fe4f8 | 972 | error (_("Packet size not changed.")); |
11cf8741 | 973 | } |
23860348 | 974 | /* Update the config. */ |
11cf8741 JM |
975 | config->fixed_p = fixed_p; |
976 | config->size = size; | |
977 | } | |
978 | ||
979 | static void | |
980 | show_memory_packet_size (struct memory_packet_config *config) | |
981 | { | |
a3f17187 | 982 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 983 | if (config->fixed_p) |
a3f17187 | 984 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
985 | get_memory_packet_size (config)); |
986 | else | |
a3f17187 | 987 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
988 | get_memory_packet_size (config)); |
989 | } | |
990 | ||
991 | static struct memory_packet_config memory_write_packet_config = | |
992 | { | |
993 | "memory-write-packet-size", | |
994 | }; | |
995 | ||
996 | static void | |
997 | set_memory_write_packet_size (char *args, int from_tty) | |
998 | { | |
999 | set_memory_packet_size (args, &memory_write_packet_config); | |
1000 | } | |
1001 | ||
1002 | static void | |
1003 | show_memory_write_packet_size (char *args, int from_tty) | |
1004 | { | |
1005 | show_memory_packet_size (&memory_write_packet_config); | |
1006 | } | |
1007 | ||
1008 | static long | |
1009 | get_memory_write_packet_size (void) | |
1010 | { | |
1011 | return get_memory_packet_size (&memory_write_packet_config); | |
1012 | } | |
1013 | ||
1014 | static struct memory_packet_config memory_read_packet_config = | |
1015 | { | |
1016 | "memory-read-packet-size", | |
1017 | }; | |
1018 | ||
1019 | static void | |
1020 | set_memory_read_packet_size (char *args, int from_tty) | |
1021 | { | |
1022 | set_memory_packet_size (args, &memory_read_packet_config); | |
1023 | } | |
1024 | ||
1025 | static void | |
1026 | show_memory_read_packet_size (char *args, int from_tty) | |
1027 | { | |
1028 | show_memory_packet_size (&memory_read_packet_config); | |
1029 | } | |
1030 | ||
1031 | static long | |
1032 | get_memory_read_packet_size (void) | |
1033 | { | |
1034 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1035 | |
11cf8741 JM |
1036 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1037 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1038 | increased beyond this. */ |
1039 | if (size > get_remote_packet_size ()) | |
1040 | size = get_remote_packet_size (); | |
11cf8741 JM |
1041 | return size; |
1042 | } | |
1043 | ||
11cf8741 | 1044 | \f |
5a2468f5 | 1045 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1046 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1047 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1048 | |
1049 | enum packet_support | |
1050 | { | |
1051 | PACKET_SUPPORT_UNKNOWN = 0, | |
1052 | PACKET_ENABLE, | |
1053 | PACKET_DISABLE | |
1054 | }; | |
1055 | ||
5a2468f5 JM |
1056 | struct packet_config |
1057 | { | |
bb572ddd DJ |
1058 | const char *name; |
1059 | const char *title; | |
4082afcc PA |
1060 | |
1061 | /* If auto, GDB auto-detects support for this packet or feature, | |
1062 | either through qSupported, or by trying the packet and looking | |
1063 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1064 | packet. If false, the packet is disabled. Configs that don't |
1065 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1066 | enum auto_boolean detect; |
4082afcc PA |
1067 | |
1068 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1069 | enum packet_support support; |
1070 | }; | |
1071 | ||
d471ea57 | 1072 | /* Analyze a packet's return value and update the packet config |
23860348 | 1073 | accordingly. */ |
d471ea57 AC |
1074 | |
1075 | enum packet_result | |
1076 | { | |
1077 | PACKET_ERROR, | |
1078 | PACKET_OK, | |
1079 | PACKET_UNKNOWN | |
1080 | }; | |
1081 | ||
4082afcc PA |
1082 | static enum packet_support packet_config_support (struct packet_config *config); |
1083 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1084 | |
1085 | static void | |
fba45db2 | 1086 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1087 | { |
1088 | char *support = "internal-error"; | |
a744cf53 | 1089 | |
4082afcc | 1090 | switch (packet_config_support (config)) |
5a2468f5 JM |
1091 | { |
1092 | case PACKET_ENABLE: | |
1093 | support = "enabled"; | |
1094 | break; | |
1095 | case PACKET_DISABLE: | |
1096 | support = "disabled"; | |
1097 | break; | |
1098 | case PACKET_SUPPORT_UNKNOWN: | |
1099 | support = "unknown"; | |
1100 | break; | |
1101 | } | |
1102 | switch (config->detect) | |
1103 | { | |
7f19b9a2 | 1104 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1105 | printf_filtered (_("Support for the `%s' packet " |
1106 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1107 | config->name, support); |
5a2468f5 | 1108 | break; |
7f19b9a2 AC |
1109 | case AUTO_BOOLEAN_TRUE: |
1110 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1111 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1112 | config->name, support); | |
8e248173 | 1113 | break; |
5a2468f5 JM |
1114 | } |
1115 | } | |
1116 | ||
1117 | static void | |
bb572ddd DJ |
1118 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1119 | const char *title, int legacy) | |
d471ea57 | 1120 | { |
5a2468f5 JM |
1121 | char *set_doc; |
1122 | char *show_doc; | |
d471ea57 | 1123 | char *cmd_name; |
3ed07be4 | 1124 | |
5a2468f5 JM |
1125 | config->name = name; |
1126 | config->title = title; | |
b435e160 AC |
1127 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1128 | name, title); | |
3e43a32a MS |
1129 | show_doc = xstrprintf ("Show current use of remote " |
1130 | "protocol `%s' (%s) packet", | |
b435e160 | 1131 | name, title); |
d471ea57 | 1132 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1133 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1134 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1135 | &config->detect, set_doc, |
1136 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1137 | NULL, |
bb572ddd DJ |
1138 | show_remote_protocol_packet_cmd, |
1139 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1140 | /* The command code copies the documentation strings. */ |
1141 | xfree (set_doc); | |
1142 | xfree (show_doc); | |
23860348 | 1143 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1144 | if (legacy) |
1145 | { | |
1146 | char *legacy_name; | |
a744cf53 | 1147 | |
b435e160 | 1148 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1149 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1150 | &remote_set_cmdlist); |
d471ea57 | 1151 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1152 | &remote_show_cmdlist); |
d471ea57 | 1153 | } |
5a2468f5 JM |
1154 | } |
1155 | ||
d471ea57 | 1156 | static enum packet_result |
a76d924d | 1157 | packet_check_result (const char *buf) |
5a2468f5 | 1158 | { |
d471ea57 | 1159 | if (buf[0] != '\0') |
5a2468f5 | 1160 | { |
d471ea57 | 1161 | /* The stub recognized the packet request. Check that the |
23860348 | 1162 | operation succeeded. */ |
a76d924d DJ |
1163 | if (buf[0] == 'E' |
1164 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1165 | && buf[3] == '\0') | |
1166 | /* "Enn" - definitly an error. */ | |
1167 | return PACKET_ERROR; | |
1168 | ||
1169 | /* Always treat "E." as an error. This will be used for | |
1170 | more verbose error messages, such as E.memtypes. */ | |
1171 | if (buf[0] == 'E' && buf[1] == '.') | |
1172 | return PACKET_ERROR; | |
1173 | ||
1174 | /* The packet may or may not be OK. Just assume it is. */ | |
1175 | return PACKET_OK; | |
1176 | } | |
1177 | else | |
1178 | /* The stub does not support the packet. */ | |
1179 | return PACKET_UNKNOWN; | |
1180 | } | |
1181 | ||
1182 | static enum packet_result | |
1183 | packet_ok (const char *buf, struct packet_config *config) | |
1184 | { | |
1185 | enum packet_result result; | |
1186 | ||
4082afcc PA |
1187 | if (config->detect != AUTO_BOOLEAN_TRUE |
1188 | && config->support == PACKET_DISABLE) | |
1189 | internal_error (__FILE__, __LINE__, | |
1190 | _("packet_ok: attempt to use a disabled packet")); | |
1191 | ||
a76d924d DJ |
1192 | result = packet_check_result (buf); |
1193 | switch (result) | |
1194 | { | |
1195 | case PACKET_OK: | |
1196 | case PACKET_ERROR: | |
1197 | /* The stub recognized the packet request. */ | |
4082afcc | 1198 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1199 | { |
d471ea57 AC |
1200 | if (remote_debug) |
1201 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1202 | "Packet %s (%s) is supported\n", |
1203 | config->name, config->title); | |
d471ea57 | 1204 | config->support = PACKET_ENABLE; |
d471ea57 | 1205 | } |
a76d924d DJ |
1206 | break; |
1207 | case PACKET_UNKNOWN: | |
23860348 | 1208 | /* The stub does not support the packet. */ |
4082afcc PA |
1209 | if (config->detect == AUTO_BOOLEAN_AUTO |
1210 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1211 | { |
4082afcc PA |
1212 | /* If the stub previously indicated that the packet was |
1213 | supported then there is a protocol error. */ | |
1214 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1215 | config->name, config->title); | |
1216 | } | |
1217 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1218 | { | |
1219 | /* The user set it wrong. */ | |
1220 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1221 | config->name, config->title); | |
d471ea57 | 1222 | } |
4082afcc PA |
1223 | |
1224 | if (remote_debug) | |
1225 | fprintf_unfiltered (gdb_stdlog, | |
1226 | "Packet %s (%s) is NOT supported\n", | |
1227 | config->name, config->title); | |
1228 | config->support = PACKET_DISABLE; | |
a76d924d | 1229 | break; |
5a2468f5 | 1230 | } |
a76d924d DJ |
1231 | |
1232 | return result; | |
5a2468f5 JM |
1233 | } |
1234 | ||
444abaca DJ |
1235 | enum { |
1236 | PACKET_vCont = 0, | |
1237 | PACKET_X, | |
1238 | PACKET_qSymbol, | |
1239 | PACKET_P, | |
1240 | PACKET_p, | |
1241 | PACKET_Z0, | |
1242 | PACKET_Z1, | |
1243 | PACKET_Z2, | |
1244 | PACKET_Z3, | |
1245 | PACKET_Z4, | |
a6b151f1 DJ |
1246 | PACKET_vFile_open, |
1247 | PACKET_vFile_pread, | |
1248 | PACKET_vFile_pwrite, | |
1249 | PACKET_vFile_close, | |
1250 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1251 | PACKET_vFile_readlink, |
0a93529c | 1252 | PACKET_vFile_fstat, |
0876f84a | 1253 | PACKET_qXfer_auxv, |
23181151 | 1254 | PACKET_qXfer_features, |
c78fa86a | 1255 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1256 | PACKET_qXfer_libraries, |
2268b414 | 1257 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1258 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1259 | PACKET_qXfer_spu_read, |
1260 | PACKET_qXfer_spu_write, | |
07e059b5 | 1261 | PACKET_qXfer_osdata, |
dc146f7c | 1262 | PACKET_qXfer_threads, |
0fb4aa4b | 1263 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1264 | PACKET_qXfer_traceframe_info, |
169081d0 | 1265 | PACKET_qXfer_uib, |
711e434b | 1266 | PACKET_qGetTIBAddr, |
444abaca | 1267 | PACKET_qGetTLSAddr, |
be2a5f71 | 1268 | PACKET_qSupported, |
bd3eecc3 | 1269 | PACKET_qTStatus, |
89be2091 | 1270 | PACKET_QPassSignals, |
9b224c5e | 1271 | PACKET_QProgramSignals, |
936d2992 | 1272 | PACKET_qCRC, |
08388c79 | 1273 | PACKET_qSearch_memory, |
2d717e4f DJ |
1274 | PACKET_vAttach, |
1275 | PACKET_vRun, | |
a6f3e723 | 1276 | PACKET_QStartNoAckMode, |
82f73884 | 1277 | PACKET_vKill, |
4aa995e1 PA |
1278 | PACKET_qXfer_siginfo_read, |
1279 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1280 | PACKET_qAttached, |
4082afcc PA |
1281 | |
1282 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1283 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1284 | |
1285 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1286 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1287 | |
1288 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1289 | PACKET_BreakpointCommands, |
4082afcc PA |
1290 | |
1291 | /* Support for fast tracepoints. */ | |
7a697b8d | 1292 | PACKET_FastTracepoints, |
4082afcc PA |
1293 | |
1294 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1295 | PACKET_StaticTracepoints, |
4082afcc PA |
1296 | |
1297 | /* Support for installing tracepoints while a trace experiment is | |
1298 | running. */ | |
1e4d1764 | 1299 | PACKET_InstallInTrace, |
4082afcc | 1300 | |
40ab02ce MS |
1301 | PACKET_bc, |
1302 | PACKET_bs, | |
409873ef | 1303 | PACKET_TracepointSource, |
d914c394 | 1304 | PACKET_QAllow, |
78d85199 | 1305 | PACKET_qXfer_fdpic, |
03583c20 | 1306 | PACKET_QDisableRandomization, |
d1feda86 | 1307 | PACKET_QAgent, |
f6f899bf | 1308 | PACKET_QTBuffer_size, |
9accd112 MM |
1309 | PACKET_Qbtrace_off, |
1310 | PACKET_Qbtrace_bts, | |
1311 | PACKET_qXfer_btrace, | |
4082afcc PA |
1312 | |
1313 | /* Support for the QNonStop packet. */ | |
1314 | PACKET_QNonStop, | |
1315 | ||
1316 | /* Support for multi-process extensions. */ | |
1317 | PACKET_multiprocess_feature, | |
1318 | ||
1319 | /* Support for enabling and disabling tracepoints while a trace | |
1320 | experiment is running. */ | |
1321 | PACKET_EnableDisableTracepoints_feature, | |
1322 | ||
1323 | /* Support for collecting strings using the tracenz bytecode. */ | |
1324 | PACKET_tracenz_feature, | |
1325 | ||
1326 | /* Support for continuing to run a trace experiment while GDB is | |
1327 | disconnected. */ | |
1328 | PACKET_DisconnectedTracing_feature, | |
1329 | ||
1330 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1331 | PACKET_augmented_libraries_svr4_read_feature, | |
1332 | ||
f4abbc16 MM |
1333 | /* Support for the qXfer:btrace-conf:read packet. */ |
1334 | PACKET_qXfer_btrace_conf, | |
1335 | ||
d33501a5 MM |
1336 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1337 | PACKET_Qbtrace_conf_bts_size, | |
1338 | ||
f7e6eed5 PA |
1339 | /* Support for swbreak+ feature. */ |
1340 | PACKET_swbreak_feature, | |
1341 | ||
1342 | /* Support for hwbreak+ feature. */ | |
1343 | PACKET_hwbreak_feature, | |
1344 | ||
89245bc0 DB |
1345 | /* Support for fork events. */ |
1346 | PACKET_fork_event_feature, | |
1347 | ||
1348 | /* Support for vfork events. */ | |
1349 | PACKET_vfork_event_feature, | |
1350 | ||
444abaca DJ |
1351 | PACKET_MAX |
1352 | }; | |
506fb367 | 1353 | |
444abaca | 1354 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1355 | |
f7e6eed5 PA |
1356 | /* Returns the packet's corresponding "set remote foo-packet" command |
1357 | state. See struct packet_config for more details. */ | |
1358 | ||
1359 | static enum auto_boolean | |
1360 | packet_set_cmd_state (int packet) | |
1361 | { | |
1362 | return remote_protocol_packets[packet].detect; | |
1363 | } | |
1364 | ||
4082afcc PA |
1365 | /* Returns whether a given packet or feature is supported. This takes |
1366 | into account the state of the corresponding "set remote foo-packet" | |
1367 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1368 | |
4082afcc PA |
1369 | static enum packet_support |
1370 | packet_config_support (struct packet_config *config) | |
1371 | { | |
1372 | switch (config->detect) | |
444abaca | 1373 | { |
4082afcc PA |
1374 | case AUTO_BOOLEAN_TRUE: |
1375 | return PACKET_ENABLE; | |
1376 | case AUTO_BOOLEAN_FALSE: | |
1377 | return PACKET_DISABLE; | |
1378 | case AUTO_BOOLEAN_AUTO: | |
1379 | return config->support; | |
1380 | default: | |
1381 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1382 | } |
4082afcc PA |
1383 | } |
1384 | ||
1385 | /* Same as packet_config_support, but takes the packet's enum value as | |
1386 | argument. */ | |
1387 | ||
1388 | static enum packet_support | |
1389 | packet_support (int packet) | |
1390 | { | |
1391 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1392 | ||
1393 | return packet_config_support (config); | |
dc8acb97 MS |
1394 | } |
1395 | ||
5a2468f5 | 1396 | static void |
444abaca DJ |
1397 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1398 | struct cmd_list_element *c, | |
1399 | const char *value) | |
5a2468f5 | 1400 | { |
444abaca | 1401 | struct packet_config *packet; |
5a2468f5 | 1402 | |
444abaca DJ |
1403 | for (packet = remote_protocol_packets; |
1404 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1405 | packet++) | |
1406 | { | |
1407 | if (&packet->detect == c->var) | |
1408 | { | |
1409 | show_packet_config_cmd (packet); | |
1410 | return; | |
1411 | } | |
1412 | } | |
9b20d036 | 1413 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1414 | c->name); |
5a2468f5 JM |
1415 | } |
1416 | ||
d471ea57 AC |
1417 | /* Should we try one of the 'Z' requests? */ |
1418 | ||
1419 | enum Z_packet_type | |
1420 | { | |
1421 | Z_PACKET_SOFTWARE_BP, | |
1422 | Z_PACKET_HARDWARE_BP, | |
1423 | Z_PACKET_WRITE_WP, | |
1424 | Z_PACKET_READ_WP, | |
1425 | Z_PACKET_ACCESS_WP, | |
1426 | NR_Z_PACKET_TYPES | |
1427 | }; | |
96baa820 | 1428 | |
d471ea57 | 1429 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1430 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1431 | |
7f19b9a2 | 1432 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1433 | |
1434 | static void | |
fba45db2 KB |
1435 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1436 | struct cmd_list_element *c) | |
96baa820 | 1437 | { |
d471ea57 | 1438 | int i; |
a744cf53 | 1439 | |
d471ea57 | 1440 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1441 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
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 | ||
4082afcc PA |
1457 | /* Returns true if the multi-process extensions are in effect. */ |
1458 | ||
1459 | static int | |
1460 | remote_multi_process_p (struct remote_state *rs) | |
1461 | { | |
1462 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1463 | } | |
1464 | ||
23860348 | 1465 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1466 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1467 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1468 | |
74531fed PA |
1469 | \f |
1470 | /* Asynchronous signal handle registered as event loop source for | |
1471 | when we have pending events ready to be passed to the core. */ | |
1472 | ||
1473 | static struct async_event_handler *remote_async_inferior_event_token; | |
1474 | ||
c906108c SS |
1475 | \f |
1476 | ||
79d7f229 PA |
1477 | static ptid_t magic_null_ptid; |
1478 | static ptid_t not_sent_ptid; | |
1479 | static ptid_t any_thread_ptid; | |
1480 | ||
0b16c5cf PA |
1481 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1482 | detach instead of killing it when bailing out). */ | |
1483 | ||
1484 | static int | |
1485 | remote_query_attached (int pid) | |
1486 | { | |
1487 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1488 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1489 | |
4082afcc | 1490 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1491 | return 0; |
1492 | ||
1493 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1494 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1495 | else |
bba74b36 | 1496 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1497 | |
1498 | putpkt (rs->buf); | |
1499 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1500 | ||
1501 | switch (packet_ok (rs->buf, | |
1554e9be | 1502 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1503 | { |
1504 | case PACKET_OK: | |
1505 | if (strcmp (rs->buf, "1") == 0) | |
1506 | return 1; | |
1507 | break; | |
1508 | case PACKET_ERROR: | |
1509 | warning (_("Remote failure reply: %s"), rs->buf); | |
1510 | break; | |
1511 | case PACKET_UNKNOWN: | |
1512 | break; | |
1513 | } | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
49c62f2e PA |
1518 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1519 | has been invented by GDB, instead of reported by the target. Since | |
1520 | we can be connected to a remote system before before knowing about | |
1521 | any inferior, mark the target with execution when we find the first | |
1522 | inferior. If ATTACHED is 1, then we had just attached to this | |
1523 | inferior. If it is 0, then we just created this inferior. If it | |
1524 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1525 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1526 | attempt to open this inferior's executable as the main executable | |
1527 | if no main executable is open already. */ | |
1941c569 PA |
1528 | |
1529 | static struct inferior * | |
1b6e6f5c GB |
1530 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1531 | int try_open_exec) | |
1941c569 | 1532 | { |
1941c569 PA |
1533 | struct inferior *inf; |
1534 | ||
0b16c5cf PA |
1535 | /* Check whether this process we're learning about is to be |
1536 | considered attached, or if is to be considered to have been | |
1537 | spawned by the stub. */ | |
1538 | if (attached == -1) | |
1539 | attached = remote_query_attached (pid); | |
1540 | ||
f5656ead | 1541 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1542 | { |
1543 | /* If the target shares code across all inferiors, then every | |
1544 | attach adds a new inferior. */ | |
1545 | inf = add_inferior (pid); | |
1546 | ||
1547 | /* ... and every inferior is bound to the same program space. | |
1548 | However, each inferior may still have its own address | |
1549 | space. */ | |
1550 | inf->aspace = maybe_new_address_space (); | |
1551 | inf->pspace = current_program_space; | |
1552 | } | |
1553 | else | |
1554 | { | |
1555 | /* In the traditional debugging scenario, there's a 1-1 match | |
1556 | between program/address spaces. We simply bind the inferior | |
1557 | to the program space's address space. */ | |
1558 | inf = current_inferior (); | |
1559 | inferior_appeared (inf, pid); | |
1560 | } | |
1941c569 | 1561 | |
0b16c5cf | 1562 | inf->attach_flag = attached; |
49c62f2e | 1563 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1564 | |
1b6e6f5c GB |
1565 | /* If no main executable is currently open then attempt to |
1566 | open the file that was executed to create this inferior. */ | |
835205d0 | 1567 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1568 | exec_file_locate_attach (pid, 1); |
1569 | ||
1941c569 PA |
1570 | return inf; |
1571 | } | |
1572 | ||
1573 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1574 | according to RUNNING. */ | |
1575 | ||
c906108c | 1576 | static void |
1941c569 | 1577 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1578 | { |
b7ea362b PA |
1579 | struct remote_state *rs = get_remote_state (); |
1580 | ||
1581 | /* GDB historically didn't pull threads in the initial connection | |
1582 | setup. If the remote target doesn't even have a concept of | |
1583 | threads (e.g., a bare-metal target), even if internally we | |
1584 | consider that a single-threaded target, mentioning a new thread | |
1585 | might be confusing to the user. Be silent then, preserving the | |
1586 | age old behavior. */ | |
1587 | if (rs->starting_up) | |
1588 | add_thread_silent (ptid); | |
1589 | else | |
1590 | add_thread (ptid); | |
1941c569 PA |
1591 | |
1592 | set_executing (ptid, running); | |
1593 | set_running (ptid, running); | |
1594 | } | |
1595 | ||
1596 | /* Come here when we learn about a thread id from the remote target. | |
1597 | It may be the first time we hear about such thread, so take the | |
1598 | opportunity to add it to GDB's thread list. In case this is the | |
1599 | first time we're noticing its corresponding inferior, add it to | |
1600 | GDB's inferior list as well. */ | |
1601 | ||
1602 | static void | |
1603 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1604 | { | |
c906108c SS |
1605 | /* If this is a new thread, add it to GDB's thread list. |
1606 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1607 | |
1608 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1609 | { | |
1610 | /* We're seeing an event on a thread id we knew had exited. | |
1611 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1612 | remote_add_thread (currthread, running); |
82f73884 PA |
1613 | return; |
1614 | } | |
1615 | ||
79d7f229 | 1616 | if (!in_thread_list (currthread)) |
c0a2216e | 1617 | { |
1941c569 | 1618 | struct inferior *inf = NULL; |
bad34192 | 1619 | int pid = ptid_get_pid (currthread); |
1941c569 | 1620 | |
bad34192 PA |
1621 | if (ptid_is_pid (inferior_ptid) |
1622 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1623 | { |
1624 | /* inferior_ptid has no thread member yet. This can happen | |
1625 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1626 | stub doesn't support qC. This is the first stop reported | |
1627 | after an attach, so this is the main thread. Update the | |
1628 | ptid in the thread list. */ | |
bad34192 PA |
1629 | if (in_thread_list (pid_to_ptid (pid))) |
1630 | thread_change_ptid (inferior_ptid, currthread); | |
1631 | else | |
1632 | { | |
1633 | remote_add_thread (currthread, running); | |
1634 | inferior_ptid = currthread; | |
1635 | } | |
dc146f7c | 1636 | return; |
c0a2216e | 1637 | } |
82f73884 PA |
1638 | |
1639 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1640 | { |
1641 | /* inferior_ptid is not set yet. This can happen with the | |
1642 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1643 | doesn't support qC. This is the first stop reported | |
1644 | after an attach, so this is the main thread. Update the | |
1645 | ptid in the thread list. */ | |
dc146f7c | 1646 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1647 | return; |
c0a2216e | 1648 | } |
82f73884 | 1649 | |
29c87f7f PA |
1650 | /* When connecting to a target remote, or to a target |
1651 | extended-remote which already was debugging an inferior, we | |
1652 | may not know about it yet. Add it before adding its child | |
1653 | thread, so notifications are emitted in a sensible order. */ | |
1654 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1655 | { |
1656 | struct remote_state *rs = get_remote_state (); | |
1657 | int fake_pid_p = !remote_multi_process_p (rs); | |
1658 | ||
1659 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1660 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1661 | } |
29c87f7f | 1662 | |
82f73884 | 1663 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1664 | remote_add_thread (currthread, running); |
1665 | ||
1666 | /* If we found a new inferior, let the common code do whatever | |
1667 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1668 | breakpoints), unless we're just setting up an all-stop |
1669 | connection. */ | |
1941c569 | 1670 | if (inf != NULL) |
b7ea362b PA |
1671 | { |
1672 | struct remote_state *rs = get_remote_state (); | |
1673 | ||
1674 | if (non_stop || !rs->starting_up) | |
1675 | notice_new_inferior (currthread, running, 0); | |
1676 | } | |
c0a2216e | 1677 | } |
c906108c SS |
1678 | } |
1679 | ||
dc146f7c VP |
1680 | /* Return the private thread data, creating it if necessary. */ |
1681 | ||
70221824 | 1682 | static struct private_thread_info * |
dc146f7c VP |
1683 | demand_private_info (ptid_t ptid) |
1684 | { | |
1685 | struct thread_info *info = find_thread_ptid (ptid); | |
1686 | ||
1687 | gdb_assert (info); | |
1688 | ||
fe978cb0 | 1689 | if (!info->priv) |
dc146f7c | 1690 | { |
fe978cb0 | 1691 | info->priv = xmalloc (sizeof (*(info->priv))); |
dc146f7c | 1692 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1693 | info->priv->core = -1; |
1694 | info->priv->extra = 0; | |
dc146f7c VP |
1695 | } |
1696 | ||
fe978cb0 | 1697 | return info->priv; |
dc146f7c VP |
1698 | } |
1699 | ||
74531fed PA |
1700 | /* Call this function as a result of |
1701 | 1) A halt indication (T packet) containing a thread id | |
1702 | 2) A direct query of currthread | |
0df8b418 | 1703 | 3) Successful execution of set thread */ |
74531fed PA |
1704 | |
1705 | static void | |
47f8a51d | 1706 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1707 | { |
47f8a51d | 1708 | rs->general_thread = currthread; |
74531fed PA |
1709 | } |
1710 | ||
89be2091 DJ |
1711 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1712 | it can simply pass through to the inferior without reporting. */ | |
1713 | ||
1714 | static void | |
94bedb42 TT |
1715 | remote_pass_signals (struct target_ops *self, |
1716 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1717 | { |
4082afcc | 1718 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1719 | { |
1720 | char *pass_packet, *p; | |
89be2091 | 1721 | int count = 0, i; |
747dc59d | 1722 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1723 | |
1724 | gdb_assert (numsigs < 256); | |
1725 | for (i = 0; i < numsigs; i++) | |
1726 | { | |
2455069d | 1727 | if (pass_signals[i]) |
89be2091 DJ |
1728 | count++; |
1729 | } | |
1730 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1731 | strcpy (pass_packet, "QPassSignals:"); | |
1732 | p = pass_packet + strlen (pass_packet); | |
1733 | for (i = 0; i < numsigs; i++) | |
1734 | { | |
2455069d | 1735 | if (pass_signals[i]) |
89be2091 DJ |
1736 | { |
1737 | if (i >= 16) | |
1738 | *p++ = tohex (i >> 4); | |
1739 | *p++ = tohex (i & 15); | |
1740 | if (count) | |
1741 | *p++ = ';'; | |
1742 | else | |
1743 | break; | |
1744 | count--; | |
1745 | } | |
1746 | } | |
1747 | *p = 0; | |
747dc59d | 1748 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1749 | { |
89be2091 DJ |
1750 | putpkt (pass_packet); |
1751 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1752 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1753 | if (rs->last_pass_packet) |
1754 | xfree (rs->last_pass_packet); | |
1755 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1756 | } |
1757 | else | |
1758 | xfree (pass_packet); | |
1759 | } | |
1760 | } | |
1761 | ||
9b224c5e PA |
1762 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1763 | signals it should pass through to the inferior when detaching. */ | |
1764 | ||
1765 | static void | |
daf5e9b6 TT |
1766 | remote_program_signals (struct target_ops *self, |
1767 | int numsigs, unsigned char *signals) | |
9b224c5e | 1768 | { |
4082afcc | 1769 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1770 | { |
1771 | char *packet, *p; | |
1772 | int count = 0, i; | |
5e4a05c4 | 1773 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1774 | |
1775 | gdb_assert (numsigs < 256); | |
1776 | for (i = 0; i < numsigs; i++) | |
1777 | { | |
1778 | if (signals[i]) | |
1779 | count++; | |
1780 | } | |
1781 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1782 | strcpy (packet, "QProgramSignals:"); | |
1783 | p = packet + strlen (packet); | |
1784 | for (i = 0; i < numsigs; i++) | |
1785 | { | |
1786 | if (signal_pass_state (i)) | |
1787 | { | |
1788 | if (i >= 16) | |
1789 | *p++ = tohex (i >> 4); | |
1790 | *p++ = tohex (i & 15); | |
1791 | if (count) | |
1792 | *p++ = ';'; | |
1793 | else | |
1794 | break; | |
1795 | count--; | |
1796 | } | |
1797 | } | |
1798 | *p = 0; | |
5e4a05c4 TT |
1799 | if (!rs->last_program_signals_packet |
1800 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1801 | { |
9b224c5e PA |
1802 | putpkt (packet); |
1803 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1804 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1805 | xfree (rs->last_program_signals_packet); |
1806 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1807 | } |
1808 | else | |
1809 | xfree (packet); | |
1810 | } | |
1811 | } | |
1812 | ||
79d7f229 PA |
1813 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1814 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1815 | thread. If GEN is set, set the general thread, if not, then set | |
1816 | the step/continue thread. */ | |
c906108c | 1817 | static void |
79d7f229 | 1818 | set_thread (struct ptid ptid, int gen) |
c906108c | 1819 | { |
d01949b6 | 1820 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1821 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1822 | char *buf = rs->buf; |
79d7f229 | 1823 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1824 | |
79d7f229 | 1825 | if (ptid_equal (state, ptid)) |
c906108c SS |
1826 | return; |
1827 | ||
79d7f229 PA |
1828 | *buf++ = 'H'; |
1829 | *buf++ = gen ? 'g' : 'c'; | |
1830 | if (ptid_equal (ptid, magic_null_ptid)) | |
1831 | xsnprintf (buf, endbuf - buf, "0"); | |
1832 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1833 | xsnprintf (buf, endbuf - buf, "0"); | |
1834 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1835 | xsnprintf (buf, endbuf - buf, "-1"); | |
1836 | else | |
82f73884 | 1837 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1838 | putpkt (rs->buf); |
6d820c5c | 1839 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1840 | if (gen) |
47f8a51d | 1841 | rs->general_thread = ptid; |
c906108c | 1842 | else |
47f8a51d | 1843 | rs->continue_thread = ptid; |
c906108c | 1844 | } |
79d7f229 PA |
1845 | |
1846 | static void | |
1847 | set_general_thread (struct ptid ptid) | |
1848 | { | |
1849 | set_thread (ptid, 1); | |
1850 | } | |
1851 | ||
1852 | static void | |
1853 | set_continue_thread (struct ptid ptid) | |
1854 | { | |
1855 | set_thread (ptid, 0); | |
1856 | } | |
1857 | ||
3c9c4b83 PA |
1858 | /* Change the remote current process. Which thread within the process |
1859 | ends up selected isn't important, as long as it is the same process | |
1860 | as what INFERIOR_PTID points to. | |
1861 | ||
1862 | This comes from that fact that there is no explicit notion of | |
1863 | "selected process" in the protocol. The selected process for | |
1864 | general operations is the process the selected general thread | |
1865 | belongs to. */ | |
1866 | ||
1867 | static void | |
1868 | set_general_process (void) | |
1869 | { | |
1870 | struct remote_state *rs = get_remote_state (); | |
1871 | ||
1872 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1873 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1874 | return; |
1875 | ||
1876 | /* We only need to change the remote current thread if it's pointing | |
1877 | at some other process. */ | |
47f8a51d | 1878 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1879 | set_general_thread (inferior_ptid); |
1880 | } | |
1881 | ||
c906108c | 1882 | \f |
7d1a114c PA |
1883 | /* Return nonzero if this is the main thread that we made up ourselves |
1884 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
1885 | |
1886 | static int | |
7d1a114c | 1887 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1888 | { |
6d820c5c | 1889 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1890 | char *p, *endp; |
c906108c | 1891 | |
c0a2216e PA |
1892 | if (ptid_equal (ptid, magic_null_ptid)) |
1893 | /* The main thread is always alive. */ | |
1894 | return 1; | |
1895 | ||
ba348170 | 1896 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
1897 | /* The main thread is always alive. This can happen after a |
1898 | vAttach, if the remote side doesn't support | |
1899 | multi-threading. */ | |
1900 | return 1; | |
1901 | ||
7d1a114c PA |
1902 | return 0; |
1903 | } | |
1904 | ||
1905 | /* Return nonzero if the thread PTID is still alive on the remote | |
1906 | system. */ | |
1907 | ||
1908 | static int | |
1909 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1910 | { | |
1911 | struct remote_state *rs = get_remote_state (); | |
1912 | char *p, *endp; | |
1913 | ||
1914 | /* Check if this is a thread that we made up ourselves to model | |
1915 | non-threaded targets as single-threaded. */ | |
1916 | if (remote_thread_always_alive (ops, ptid)) | |
1917 | return 1; | |
1918 | ||
82f73884 PA |
1919 | p = rs->buf; |
1920 | endp = rs->buf + get_remote_packet_size (); | |
1921 | ||
1922 | *p++ = 'T'; | |
1923 | write_ptid (p, endp, ptid); | |
1924 | ||
2e9f7625 | 1925 | putpkt (rs->buf); |
6d820c5c | 1926 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1927 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1928 | } |
1929 | ||
1930 | /* About these extended threadlist and threadinfo packets. They are | |
1931 | variable length packets but, the fields within them are often fixed | |
1932 | length. They are redundent enough to send over UDP as is the | |
1933 | remote protocol in general. There is a matching unit test module | |
1934 | in libstub. */ | |
1935 | ||
23860348 | 1936 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1937 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1938 | changable. */ |
cce74817 JM |
1939 | |
1940 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1941 | Plan to fix this. */ |
cce74817 | 1942 | |
23860348 | 1943 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1944 | |
9d1f7ab2 | 1945 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1946 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1947 | |
1948 | struct gdb_ext_thread_info | |
c5aa993b | 1949 | { |
23860348 | 1950 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1951 | int active; /* Has state interesting to GDB? |
23860348 | 1952 | regs, stack. */ |
2bc416ba | 1953 | char display[256]; /* Brief state display, name, |
cedea757 | 1954 | blocked/suspended. */ |
23860348 | 1955 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1956 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1957 | whatever. */ |
c5aa993b | 1958 | }; |
cce74817 JM |
1959 | |
1960 | /* The volume of remote transfers can be limited by submitting | |
1961 | a mask containing bits specifying the desired information. | |
1962 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1963 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1964 | |
1965 | #define TAG_THREADID 1 | |
1966 | #define TAG_EXISTS 2 | |
1967 | #define TAG_DISPLAY 4 | |
1968 | #define TAG_THREADNAME 8 | |
c5aa993b | 1969 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1970 | |
23860348 | 1971 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1972 | |
a14ed312 | 1973 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1974 | |
a14ed312 | 1975 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1976 | |
a14ed312 | 1977 | static char *pack_int (char *buf, int value); |
cce74817 | 1978 | |
a14ed312 | 1979 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1980 | |
a14ed312 | 1981 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1982 | |
23860348 | 1983 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1984 | |
23860348 | 1985 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1986 | |
23860348 | 1987 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1988 | |
23860348 | 1989 | static int threadref_to_int (threadref *ref); |
cce74817 | 1990 | |
23860348 | 1991 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1992 | |
23860348 | 1993 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1994 | |
2bc416ba | 1995 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1996 | threadref *id); |
cce74817 | 1997 | |
a14ed312 | 1998 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1999 | threadref *expectedref, |
a14ed312 KB |
2000 | struct gdb_ext_thread_info |
2001 | *info); | |
cce74817 JM |
2002 | |
2003 | ||
2bc416ba | 2004 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2005 | int fieldset, /*TAG mask */ |
a14ed312 | 2006 | struct gdb_ext_thread_info *info); |
cce74817 | 2007 | |
a14ed312 KB |
2008 | static char *pack_threadlist_request (char *pkt, int startflag, |
2009 | int threadcount, | |
23860348 | 2010 | threadref *nextthread); |
cce74817 | 2011 | |
a14ed312 KB |
2012 | static int parse_threadlist_response (char *pkt, |
2013 | int result_limit, | |
23860348 | 2014 | threadref *original_echo, |
2bc416ba | 2015 | threadref *resultlist, |
23860348 | 2016 | int *doneflag); |
cce74817 | 2017 | |
a14ed312 | 2018 | static int remote_get_threadlist (int startflag, |
23860348 | 2019 | threadref *nextthread, |
a14ed312 KB |
2020 | int result_limit, |
2021 | int *done, | |
2bc416ba | 2022 | int *result_count, |
23860348 | 2023 | threadref *threadlist); |
cce74817 | 2024 | |
23860348 | 2025 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2026 | |
a14ed312 KB |
2027 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2028 | void *context, int looplimit); | |
cce74817 | 2029 | |
23860348 | 2030 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2031 | |
82f73884 PA |
2032 | |
2033 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2034 | buffer we're allowed to write to. Returns | |
2035 | BUF+CHARACTERS_WRITTEN. */ | |
2036 | ||
2037 | static char * | |
2038 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2039 | { | |
2040 | int pid, tid; | |
2041 | struct remote_state *rs = get_remote_state (); | |
2042 | ||
2043 | if (remote_multi_process_p (rs)) | |
2044 | { | |
2045 | pid = ptid_get_pid (ptid); | |
2046 | if (pid < 0) | |
2047 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2048 | else | |
2049 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2050 | } | |
ba348170 | 2051 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2052 | if (tid < 0) |
2053 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2054 | else | |
2055 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2056 | ||
2057 | return buf; | |
2058 | } | |
2059 | ||
2060 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2061 | passed the last parsed char. Returns null_ptid on error. */ | |
2062 | ||
2063 | static ptid_t | |
2064 | read_ptid (char *buf, char **obuf) | |
2065 | { | |
2066 | char *p = buf; | |
2067 | char *pp; | |
2068 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2069 | |
2070 | if (*p == 'p') | |
2071 | { | |
2072 | /* Multi-process ptid. */ | |
2073 | pp = unpack_varlen_hex (p + 1, &pid); | |
2074 | if (*pp != '.') | |
b37520b6 | 2075 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2076 | |
2077 | p = pp; | |
2078 | pp = unpack_varlen_hex (p + 1, &tid); | |
2079 | if (obuf) | |
2080 | *obuf = pp; | |
ba348170 | 2081 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2082 | } |
2083 | ||
2084 | /* No multi-process. Just a tid. */ | |
2085 | pp = unpack_varlen_hex (p, &tid); | |
2086 | ||
2087 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2088 | what's in inferior_ptid, unless it's null at this point. If so, |
2089 | then since there's no way to know the pid of the reported | |
2090 | threads, use the magic number. */ | |
2091 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2092 | pid = ptid_get_pid (magic_null_ptid); | |
2093 | else | |
2094 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2095 | |
2096 | if (obuf) | |
2097 | *obuf = pp; | |
ba348170 | 2098 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2099 | } |
2100 | ||
c906108c | 2101 | static int |
fba45db2 | 2102 | stubhex (int ch) |
c906108c SS |
2103 | { |
2104 | if (ch >= 'a' && ch <= 'f') | |
2105 | return ch - 'a' + 10; | |
2106 | if (ch >= '0' && ch <= '9') | |
2107 | return ch - '0'; | |
2108 | if (ch >= 'A' && ch <= 'F') | |
2109 | return ch - 'A' + 10; | |
2110 | return -1; | |
2111 | } | |
2112 | ||
2113 | static int | |
fba45db2 | 2114 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2115 | { |
2116 | int nibble; | |
2117 | int retval = 0; | |
2118 | ||
2119 | while (fieldlength) | |
2120 | { | |
2121 | nibble = stubhex (*buff++); | |
2122 | retval |= nibble; | |
2123 | fieldlength--; | |
2124 | if (fieldlength) | |
2125 | retval = retval << 4; | |
2126 | } | |
2127 | return retval; | |
2128 | } | |
2129 | ||
c906108c | 2130 | static char * |
fba45db2 | 2131 | unpack_nibble (char *buf, int *val) |
c906108c | 2132 | { |
b7589f7d | 2133 | *val = fromhex (*buf++); |
c906108c SS |
2134 | return buf; |
2135 | } | |
2136 | ||
c906108c | 2137 | static char * |
fba45db2 | 2138 | unpack_byte (char *buf, int *value) |
c906108c SS |
2139 | { |
2140 | *value = stub_unpack_int (buf, 2); | |
2141 | return buf + 2; | |
2142 | } | |
2143 | ||
2144 | static char * | |
fba45db2 | 2145 | pack_int (char *buf, int value) |
c906108c SS |
2146 | { |
2147 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2148 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2149 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2150 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2151 | return buf; | |
2152 | } | |
2153 | ||
2154 | static char * | |
fba45db2 | 2155 | unpack_int (char *buf, int *value) |
c906108c SS |
2156 | { |
2157 | *value = stub_unpack_int (buf, 8); | |
2158 | return buf + 8; | |
2159 | } | |
2160 | ||
23860348 | 2161 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2162 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2163 | |
2164 | static char * | |
fba45db2 | 2165 | pack_string (char *pkt, char *string) |
c906108c SS |
2166 | { |
2167 | char ch; | |
2168 | int len; | |
2169 | ||
2170 | len = strlen (string); | |
2171 | if (len > 200) | |
23860348 | 2172 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2173 | pkt = pack_hex_byte (pkt, len); |
2174 | while (len-- > 0) | |
2175 | { | |
2176 | ch = *string++; | |
2177 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2178 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2179 | *pkt++ = ch; |
2180 | } | |
2181 | return pkt; | |
2182 | } | |
2183 | #endif /* 0 (unused) */ | |
2184 | ||
2185 | static char * | |
fba45db2 | 2186 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2187 | { |
2188 | while (length--) | |
2189 | *dest++ = *src++; | |
2190 | *dest = '\0'; | |
2191 | return src; | |
2192 | } | |
2193 | ||
2194 | static char * | |
fba45db2 | 2195 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2196 | { |
2197 | char *limit; | |
2198 | unsigned char *altid; | |
2199 | ||
2200 | altid = (unsigned char *) id; | |
2201 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2202 | while (pkt < limit) | |
2203 | pkt = pack_hex_byte (pkt, *altid++); | |
2204 | return pkt; | |
2205 | } | |
2206 | ||
2207 | ||
2208 | static char * | |
fba45db2 | 2209 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2210 | { |
2211 | char *altref; | |
2212 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2213 | int x, y; | |
2214 | ||
2215 | altref = (char *) id; | |
2216 | ||
2217 | while (inbuf < limit) | |
2218 | { | |
2219 | x = stubhex (*inbuf++); | |
2220 | y = stubhex (*inbuf++); | |
2221 | *altref++ = (x << 4) | y; | |
2222 | } | |
2223 | return inbuf; | |
2224 | } | |
2225 | ||
2226 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2227 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2228 | to use 64bit thread references internally. This is an adapter |
2229 | function. */ | |
2230 | ||
2231 | void | |
fba45db2 | 2232 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2233 | { |
2234 | unsigned char *scan; | |
2235 | ||
2236 | scan = (unsigned char *) id; | |
2237 | { | |
2238 | int i = 4; | |
2239 | while (i--) | |
2240 | *scan++ = 0; | |
2241 | } | |
2242 | *scan++ = (value >> 24) & 0xff; | |
2243 | *scan++ = (value >> 16) & 0xff; | |
2244 | *scan++ = (value >> 8) & 0xff; | |
2245 | *scan++ = (value & 0xff); | |
2246 | } | |
2247 | ||
2248 | static int | |
fba45db2 | 2249 | threadref_to_int (threadref *ref) |
c906108c SS |
2250 | { |
2251 | int i, value = 0; | |
2252 | unsigned char *scan; | |
2253 | ||
cfd77fa1 | 2254 | scan = *ref; |
c906108c SS |
2255 | scan += 4; |
2256 | i = 4; | |
2257 | while (i-- > 0) | |
2258 | value = (value << 8) | ((*scan++) & 0xff); | |
2259 | return value; | |
2260 | } | |
2261 | ||
2262 | static void | |
fba45db2 | 2263 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2264 | { |
2265 | int i; | |
2266 | unsigned char *csrc, *cdest; | |
2267 | ||
2268 | csrc = (unsigned char *) src; | |
2269 | cdest = (unsigned char *) dest; | |
2270 | i = 8; | |
2271 | while (i--) | |
2272 | *cdest++ = *csrc++; | |
2273 | } | |
2274 | ||
2275 | static int | |
fba45db2 | 2276 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2277 | { |
23860348 | 2278 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2279 | #if 0 |
2280 | unsigned char *srcp, *destp; | |
2281 | int i, result; | |
2282 | srcp = (char *) src; | |
2283 | destp = (char *) dest; | |
2284 | ||
2285 | result = 1; | |
2286 | while (i-- > 0) | |
2287 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2288 | return result; | |
2289 | #endif | |
2290 | return 1; | |
2291 | } | |
2292 | ||
2293 | /* | |
c5aa993b JM |
2294 | threadid:1, # always request threadid |
2295 | context_exists:2, | |
2296 | display:4, | |
2297 | unique_name:8, | |
2298 | more_display:16 | |
2299 | */ | |
c906108c SS |
2300 | |
2301 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2302 | ||
2303 | static char * | |
fba45db2 | 2304 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2305 | { |
23860348 MS |
2306 | *pkt++ = 'q'; /* Info Query */ |
2307 | *pkt++ = 'P'; /* process or thread info */ | |
2308 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2309 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2310 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2311 | return pkt; |
2312 | } | |
2313 | ||
23860348 | 2314 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2315 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2316 | add more fields as time goes by. */ |
c906108c | 2317 | |
23860348 | 2318 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2319 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2320 | fetch registers and its stack? */ |
c5aa993b | 2321 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2322 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2323 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2324 | the process. */ |
c906108c SS |
2325 | |
2326 | static int | |
fba45db2 KB |
2327 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2328 | struct gdb_ext_thread_info *info) | |
c906108c | 2329 | { |
d01949b6 | 2330 | struct remote_state *rs = get_remote_state (); |
c906108c | 2331 | int mask, length; |
cfd77fa1 | 2332 | int tag; |
c906108c | 2333 | threadref ref; |
6d820c5c | 2334 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2335 | int retval = 1; |
2336 | ||
23860348 | 2337 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2338 | info->active = 0; |
2339 | info->display[0] = '\0'; | |
2340 | info->shortname[0] = '\0'; | |
2341 | info->more_display[0] = '\0'; | |
2342 | ||
23860348 MS |
2343 | /* Assume the characters indicating the packet type have been |
2344 | stripped. */ | |
c906108c SS |
2345 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2346 | pkt = unpack_threadid (pkt, &ref); | |
2347 | ||
2348 | if (mask == 0) | |
8a3fe4f8 | 2349 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2350 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2351 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2352 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2353 | return 0; |
2354 | } | |
2355 | copy_threadref (&info->threadid, &ref); | |
2356 | ||
23860348 | 2357 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2358 | |
23860348 MS |
2359 | /* Packets are terminated with nulls. */ |
2360 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2361 | { |
2362 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2363 | pkt = unpack_byte (pkt, &length); /* length */ |
2364 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2365 | { |
8a3fe4f8 | 2366 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2367 | retval = 0; |
2368 | break; | |
2369 | } | |
2370 | if (tag == TAG_THREADID) | |
2371 | { | |
2372 | if (length != 16) | |
2373 | { | |
8a3fe4f8 | 2374 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2375 | retval = 0; |
2376 | break; | |
2377 | } | |
2378 | pkt = unpack_threadid (pkt, &ref); | |
2379 | mask = mask & ~TAG_THREADID; | |
2380 | continue; | |
2381 | } | |
2382 | if (tag == TAG_EXISTS) | |
2383 | { | |
2384 | info->active = stub_unpack_int (pkt, length); | |
2385 | pkt += length; | |
2386 | mask = mask & ~(TAG_EXISTS); | |
2387 | if (length > 8) | |
2388 | { | |
8a3fe4f8 | 2389 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2390 | retval = 0; |
2391 | break; | |
2392 | } | |
2393 | continue; | |
2394 | } | |
2395 | if (tag == TAG_THREADNAME) | |
2396 | { | |
2397 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2398 | mask = mask & ~TAG_THREADNAME; | |
2399 | continue; | |
2400 | } | |
2401 | if (tag == TAG_DISPLAY) | |
2402 | { | |
2403 | pkt = unpack_string (pkt, &info->display[0], length); | |
2404 | mask = mask & ~TAG_DISPLAY; | |
2405 | continue; | |
2406 | } | |
2407 | if (tag == TAG_MOREDISPLAY) | |
2408 | { | |
2409 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2410 | mask = mask & ~TAG_MOREDISPLAY; | |
2411 | continue; | |
2412 | } | |
8a3fe4f8 | 2413 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2414 | break; /* Not a tag we know about. */ |
c906108c SS |
2415 | } |
2416 | return retval; | |
2417 | } | |
2418 | ||
2419 | static int | |
fba45db2 KB |
2420 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2421 | struct gdb_ext_thread_info *info) | |
c906108c | 2422 | { |
d01949b6 | 2423 | struct remote_state *rs = get_remote_state (); |
c906108c | 2424 | int result; |
c906108c | 2425 | |
2e9f7625 DJ |
2426 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2427 | putpkt (rs->buf); | |
6d820c5c | 2428 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2429 | |
2430 | if (rs->buf[0] == '\0') | |
2431 | return 0; | |
2432 | ||
2e9f7625 | 2433 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2434 | threadid, info); |
c906108c SS |
2435 | return result; |
2436 | } | |
2437 | ||
c906108c SS |
2438 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2439 | ||
2440 | static char * | |
fba45db2 KB |
2441 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2442 | threadref *nextthread) | |
c906108c SS |
2443 | { |
2444 | *pkt++ = 'q'; /* info query packet */ | |
2445 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2446 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2447 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2448 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2449 | *pkt = '\0'; | |
2450 | return pkt; | |
2451 | } | |
2452 | ||
2453 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2454 | ||
2455 | static int | |
fba45db2 KB |
2456 | parse_threadlist_response (char *pkt, int result_limit, |
2457 | threadref *original_echo, threadref *resultlist, | |
2458 | int *doneflag) | |
c906108c | 2459 | { |
d01949b6 | 2460 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2461 | char *limit; |
2462 | int count, resultcount, done; | |
2463 | ||
2464 | resultcount = 0; | |
2465 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2466 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2467 | /* done parse past here */ |
c906108c SS |
2468 | pkt = unpack_byte (pkt, &count); /* count field */ |
2469 | pkt = unpack_nibble (pkt, &done); | |
2470 | /* The first threadid is the argument threadid. */ | |
2471 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2472 | while ((count-- > 0) && (pkt < limit)) | |
2473 | { | |
2474 | pkt = unpack_threadid (pkt, resultlist++); | |
2475 | if (resultcount++ >= result_limit) | |
2476 | break; | |
2477 | } | |
2478 | if (doneflag) | |
2479 | *doneflag = done; | |
2480 | return resultcount; | |
2481 | } | |
2482 | ||
6dc54d91 PA |
2483 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2484 | qL packet is not supported, 0 on error and 1 on success. */ | |
2485 | ||
c906108c | 2486 | static int |
fba45db2 KB |
2487 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2488 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2489 | { |
d01949b6 | 2490 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2491 | int result = 1; |
2492 | ||
23860348 | 2493 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2494 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2495 | >= get_remote_packet_size ()) | |
ea9c271d | 2496 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2497 | |
6d820c5c DJ |
2498 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2499 | putpkt (rs->buf); | |
2500 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2501 | if (*rs->buf == '\0') |
6dc54d91 PA |
2502 | { |
2503 | /* Packet not supported. */ | |
2504 | return -1; | |
2505 | } | |
2506 | ||
2507 | *result_count = | |
2508 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2509 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2510 | |
0d031856 | 2511 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2512 | { |
23860348 MS |
2513 | /* FIXME: This is a good reason to drop the packet. */ |
2514 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2515 | /* Possabilities : |
2516 | retransmit immediatly - race conditions | |
2517 | retransmit after timeout - yes | |
2518 | exit | |
2519 | wait for packet, then exit | |
2520 | */ | |
8a3fe4f8 | 2521 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2522 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2523 | } |
2524 | if (*result_count <= 0) | |
2525 | { | |
2526 | if (*done != 1) | |
2527 | { | |
8a3fe4f8 | 2528 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2529 | result = 0; |
2530 | } | |
2531 | return result; /* break; */ | |
2532 | } | |
2533 | if (*result_count > result_limit) | |
2534 | { | |
2535 | *result_count = 0; | |
8a3fe4f8 | 2536 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2537 | return 0; |
2538 | } | |
2539 | return result; | |
2540 | } | |
2541 | ||
6dc54d91 PA |
2542 | /* Fetch the list of remote threads, with the qL packet, and call |
2543 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2544 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2545 | STEPFUNCTION returns false. If the packet is not supported, | |
2546 | returns -1. */ | |
c906108c | 2547 | |
c906108c | 2548 | static int |
fba45db2 KB |
2549 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2550 | int looplimit) | |
c906108c | 2551 | { |
0d031856 | 2552 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2553 | int done, i, result_count; |
2554 | int startflag = 1; | |
2555 | int result = 1; | |
2556 | int loopcount = 0; | |
c906108c SS |
2557 | |
2558 | done = 0; | |
2559 | while (!done) | |
2560 | { | |
2561 | if (loopcount++ > looplimit) | |
2562 | { | |
2563 | result = 0; | |
8a3fe4f8 | 2564 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2565 | break; |
2566 | } | |
6dc54d91 PA |
2567 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2568 | MAXTHREADLISTRESULTS, | |
2569 | &done, &result_count, | |
2570 | rs->resultthreadlist); | |
2571 | if (result <= 0) | |
2572 | break; | |
23860348 | 2573 | /* Clear for later iterations. */ |
c906108c SS |
2574 | startflag = 0; |
2575 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2576 | if (result_count >= 1) | |
0d031856 TT |
2577 | copy_threadref (&rs->nextthread, |
2578 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2579 | i = 0; |
2580 | while (result_count--) | |
6dc54d91 PA |
2581 | { |
2582 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2583 | { | |
2584 | result = 0; | |
2585 | break; | |
2586 | } | |
2587 | } | |
c906108c SS |
2588 | } |
2589 | return result; | |
2590 | } | |
2591 | ||
6dc54d91 PA |
2592 | /* A thread found on the remote target. */ |
2593 | ||
2594 | typedef struct thread_item | |
2595 | { | |
2596 | /* The thread's PTID. */ | |
2597 | ptid_t ptid; | |
2598 | ||
2599 | /* The thread's extra info. May be NULL. */ | |
2600 | char *extra; | |
2601 | ||
2602 | /* The core the thread was running on. -1 if not known. */ | |
2603 | int core; | |
2604 | } thread_item_t; | |
2605 | DEF_VEC_O(thread_item_t); | |
2606 | ||
2607 | /* Context passed around to the various methods listing remote | |
2608 | threads. As new threads are found, they're added to the ITEMS | |
2609 | vector. */ | |
2610 | ||
2611 | struct threads_listing_context | |
2612 | { | |
2613 | /* The threads found on the remote target. */ | |
2614 | VEC (thread_item_t) *items; | |
2615 | }; | |
2616 | ||
80134cf5 PA |
2617 | /* Discard the contents of the constructed thread listing context. */ |
2618 | ||
2619 | static void | |
2620 | clear_threads_listing_context (void *p) | |
2621 | { | |
2622 | struct threads_listing_context *context = p; | |
2623 | int i; | |
2624 | struct thread_item *item; | |
2625 | ||
2626 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2627 | xfree (item->extra); | |
2628 | ||
2629 | VEC_free (thread_item_t, context->items); | |
2630 | } | |
2631 | ||
c906108c | 2632 | static int |
6dc54d91 | 2633 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2634 | { |
6dc54d91 PA |
2635 | struct threads_listing_context *context = data; |
2636 | struct thread_item item; | |
79d7f229 | 2637 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2638 | |
6dc54d91 PA |
2639 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2640 | item.core = -1; | |
2641 | item.extra = NULL; | |
2642 | ||
2643 | VEC_safe_push (thread_item_t, context->items, &item); | |
2644 | ||
c906108c SS |
2645 | return 1; /* continue iterator */ |
2646 | } | |
2647 | ||
2648 | #define CRAZY_MAX_THREADS 1000 | |
2649 | ||
39f77062 KB |
2650 | static ptid_t |
2651 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2652 | { |
d01949b6 | 2653 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2654 | |
2655 | putpkt ("qC"); | |
6d820c5c | 2656 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2657 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2658 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2659 | else |
2660 | return oldpid; | |
2661 | } | |
2662 | ||
6dc54d91 | 2663 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2664 | |
6dc54d91 PA |
2665 | static int |
2666 | remote_get_threads_with_ql (struct target_ops *ops, | |
2667 | struct threads_listing_context *context) | |
c906108c | 2668 | { |
6dc54d91 PA |
2669 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2670 | CRAZY_MAX_THREADS) >= 0) | |
2671 | return 1; | |
2672 | ||
2673 | return 0; | |
c906108c SS |
2674 | } |
2675 | ||
dc146f7c VP |
2676 | #if defined(HAVE_LIBEXPAT) |
2677 | ||
dc146f7c VP |
2678 | static void |
2679 | start_thread (struct gdb_xml_parser *parser, | |
2680 | const struct gdb_xml_element *element, | |
2681 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2682 | { | |
6dc54d91 | 2683 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2684 | |
2685 | struct thread_item item; | |
2686 | char *id; | |
3d2c1d41 | 2687 | struct gdb_xml_value *attr; |
dc146f7c | 2688 | |
3d2c1d41 | 2689 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2690 | item.ptid = read_ptid (id, NULL); |
2691 | ||
3d2c1d41 PA |
2692 | attr = xml_find_attribute (attributes, "core"); |
2693 | if (attr != NULL) | |
2694 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2695 | else |
2696 | item.core = -1; | |
2697 | ||
2698 | item.extra = 0; | |
2699 | ||
2700 | VEC_safe_push (thread_item_t, data->items, &item); | |
2701 | } | |
2702 | ||
2703 | static void | |
2704 | end_thread (struct gdb_xml_parser *parser, | |
2705 | const struct gdb_xml_element *element, | |
2706 | void *user_data, const char *body_text) | |
2707 | { | |
6dc54d91 | 2708 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2709 | |
2710 | if (body_text && *body_text) | |
2ae2a0b7 | 2711 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2712 | } |
2713 | ||
2714 | const struct gdb_xml_attribute thread_attributes[] = { | |
2715 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2716 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2717 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2718 | }; | |
2719 | ||
2720 | const struct gdb_xml_element thread_children[] = { | |
2721 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2722 | }; | |
2723 | ||
2724 | const struct gdb_xml_element threads_children[] = { | |
2725 | { "thread", thread_attributes, thread_children, | |
2726 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2727 | start_thread, end_thread }, | |
2728 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2729 | }; | |
2730 | ||
2731 | const struct gdb_xml_element threads_elements[] = { | |
2732 | { "threads", NULL, threads_children, | |
2733 | GDB_XML_EF_NONE, NULL, NULL }, | |
2734 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2735 | }; | |
2736 | ||
2737 | #endif | |
2738 | ||
6dc54d91 | 2739 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2740 | |
6dc54d91 PA |
2741 | static int |
2742 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2743 | struct threads_listing_context *context) | |
0f71a2f6 | 2744 | { |
dc146f7c | 2745 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2746 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2747 | { |
6dc54d91 | 2748 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2749 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2750 | |
6dc54d91 | 2751 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2752 | { |
6dc54d91 PA |
2753 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2754 | threads_elements, xml, context); | |
dc146f7c VP |
2755 | } |
2756 | ||
2757 | do_cleanups (back_to); | |
6dc54d91 | 2758 | return 1; |
dc146f7c VP |
2759 | } |
2760 | #endif | |
2761 | ||
6dc54d91 PA |
2762 | return 0; |
2763 | } | |
2764 | ||
2765 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2766 | ||
2767 | static int | |
2768 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2769 | struct threads_listing_context *context) | |
2770 | { | |
2771 | struct remote_state *rs = get_remote_state (); | |
2772 | ||
b80fafe3 | 2773 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2774 | { |
6dc54d91 PA |
2775 | char *bufp; |
2776 | ||
9d1f7ab2 | 2777 | putpkt ("qfThreadInfo"); |
6d820c5c | 2778 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2779 | bufp = rs->buf; |
9d1f7ab2 | 2780 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2781 | { |
9d1f7ab2 MS |
2782 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2783 | { | |
2784 | do | |
2785 | { | |
6dc54d91 PA |
2786 | struct thread_item item; |
2787 | ||
2788 | item.ptid = read_ptid (bufp, &bufp); | |
2789 | item.core = -1; | |
2790 | item.extra = NULL; | |
2791 | ||
2792 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
2793 | } |
2794 | while (*bufp++ == ','); /* comma-separated list */ | |
2795 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2796 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 2797 | bufp = rs->buf; |
9d1f7ab2 | 2798 | } |
6dc54d91 PA |
2799 | return 1; |
2800 | } | |
2801 | else | |
2802 | { | |
2803 | /* Packet not recognized. */ | |
2804 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
2805 | } |
2806 | } | |
2807 | ||
6dc54d91 PA |
2808 | return 0; |
2809 | } | |
2810 | ||
e8032dde | 2811 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
2812 | targets. */ |
2813 | ||
2814 | static void | |
e8032dde | 2815 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
2816 | { |
2817 | struct remote_state *rs = get_remote_state (); | |
2818 | struct threads_listing_context context; | |
2819 | struct cleanup *old_chain; | |
ab970af1 | 2820 | int got_list = 0; |
e8032dde | 2821 | |
6dc54d91 PA |
2822 | context.items = NULL; |
2823 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2824 | ||
2825 | /* We have a few different mechanisms to fetch the thread list. Try | |
2826 | them all, starting with the most preferred one first, falling | |
2827 | back to older methods. */ | |
2828 | if (remote_get_threads_with_qxfer (ops, &context) | |
2829 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2830 | || remote_get_threads_with_ql (ops, &context)) | |
2831 | { | |
2832 | int i; | |
2833 | struct thread_item *item; | |
ab970af1 PA |
2834 | struct thread_info *tp, *tmp; |
2835 | ||
2836 | got_list = 1; | |
2837 | ||
7d1a114c PA |
2838 | if (VEC_empty (thread_item_t, context.items) |
2839 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2840 | { | |
2841 | /* Some targets don't really support threads, but still | |
2842 | reply an (empty) thread list in response to the thread | |
2843 | listing packets, instead of replying "packet not | |
2844 | supported". Exit early so we don't delete the main | |
2845 | thread. */ | |
2846 | do_cleanups (old_chain); | |
2847 | return; | |
2848 | } | |
2849 | ||
ab970af1 PA |
2850 | /* CONTEXT now holds the current thread list on the remote |
2851 | target end. Delete GDB-side threads no longer found on the | |
2852 | target. */ | |
8a06aea7 | 2853 | ALL_THREADS_SAFE (tp, tmp) |
ab970af1 PA |
2854 | { |
2855 | for (i = 0; | |
2856 | VEC_iterate (thread_item_t, context.items, i, item); | |
2857 | ++i) | |
2858 | { | |
2859 | if (ptid_equal (item->ptid, tp->ptid)) | |
2860 | break; | |
2861 | } | |
2862 | ||
2863 | if (i == VEC_length (thread_item_t, context.items)) | |
2864 | { | |
2865 | /* Not found. */ | |
2866 | delete_thread (tp->ptid); | |
2867 | } | |
2868 | } | |
74531fed | 2869 | |
ab970af1 | 2870 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
2871 | for (i = 0; |
2872 | VEC_iterate (thread_item_t, context.items, i, item); | |
2873 | ++i) | |
2874 | { | |
2875 | if (!ptid_equal (item->ptid, null_ptid)) | |
2876 | { | |
2877 | struct private_thread_info *info; | |
2878 | /* In non-stop mode, we assume new found threads are | |
2879 | running until proven otherwise with a stop reply. In | |
2880 | all-stop, we can only get here if all threads are | |
2881 | stopped. */ | |
2882 | int running = non_stop ? 1 : 0; | |
2883 | ||
2884 | remote_notice_new_inferior (item->ptid, running); | |
2885 | ||
2886 | info = demand_private_info (item->ptid); | |
2887 | info->core = item->core; | |
2888 | info->extra = item->extra; | |
2889 | item->extra = NULL; | |
2890 | } | |
2891 | } | |
2892 | } | |
2893 | ||
ab970af1 PA |
2894 | if (!got_list) |
2895 | { | |
2896 | /* If no thread listing method is supported, then query whether | |
2897 | each known thread is alive, one by one, with the T packet. | |
2898 | If the target doesn't support threads at all, then this is a | |
2899 | no-op. See remote_thread_alive. */ | |
2900 | prune_threads (); | |
2901 | } | |
2902 | ||
6dc54d91 | 2903 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2904 | } |
2905 | ||
802188a7 | 2906 | /* |
9d1f7ab2 MS |
2907 | * Collect a descriptive string about the given thread. |
2908 | * The target may say anything it wants to about the thread | |
2909 | * (typically info about its blocked / runnable state, name, etc.). | |
2910 | * This string will appear in the info threads display. | |
802188a7 | 2911 | * |
9d1f7ab2 MS |
2912 | * Optional: targets are not required to implement this function. |
2913 | */ | |
2914 | ||
2915 | static char * | |
c15906d8 | 2916 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 2917 | { |
d01949b6 | 2918 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2919 | int result; |
2920 | int set; | |
2921 | threadref id; | |
2922 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2923 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2924 | int n = 0; /* position in display_buf */ |
2925 | ||
5d93a237 | 2926 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2927 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2928 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2929 | |
60e569b9 | 2930 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 2931 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
2932 | /* This is the main thread which was added by GDB. The remote |
2933 | server doesn't know about it. */ | |
2934 | return NULL; | |
2935 | ||
4082afcc | 2936 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
2937 | { |
2938 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2939 | |
fe978cb0 PA |
2940 | if (info && info->priv) |
2941 | return info->priv->extra; | |
dc146f7c VP |
2942 | else |
2943 | return NULL; | |
2944 | } | |
2945 | ||
b80fafe3 | 2946 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2947 | { |
82f73884 PA |
2948 | char *b = rs->buf; |
2949 | char *endb = rs->buf + get_remote_packet_size (); | |
2950 | ||
2951 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2952 | b += strlen (b); | |
2953 | write_ptid (b, endb, tp->ptid); | |
2954 | ||
2e9f7625 | 2955 | putpkt (rs->buf); |
6d820c5c | 2956 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2957 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2958 | { |
2e9f7625 DJ |
2959 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2960 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2961 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2962 | return display_buf; |
2963 | } | |
0f71a2f6 | 2964 | } |
9d1f7ab2 MS |
2965 | |
2966 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2967 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2968 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2969 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 2970 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
2971 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2972 | if (threadinfo.active) | |
0f71a2f6 | 2973 | { |
9d1f7ab2 | 2974 | if (*threadinfo.shortname) |
2bc416ba | 2975 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2976 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2977 | if (*threadinfo.display) |
2bc416ba | 2978 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2979 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2980 | if (*threadinfo.more_display) |
2bc416ba | 2981 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2982 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2983 | |
2984 | if (n > 0) | |
c5aa993b | 2985 | { |
23860348 | 2986 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2987 | if (',' == display_buf[n-1]) |
2988 | display_buf[n-1] = ' '; | |
2989 | return display_buf; | |
c5aa993b | 2990 | } |
0f71a2f6 | 2991 | } |
9d1f7ab2 | 2992 | return NULL; |
0f71a2f6 | 2993 | } |
c906108c | 2994 | \f |
c5aa993b | 2995 | |
0fb4aa4b | 2996 | static int |
61fc905d | 2997 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
2998 | struct static_tracepoint_marker *marker) |
2999 | { | |
3000 | struct remote_state *rs = get_remote_state (); | |
3001 | char *p = rs->buf; | |
3002 | ||
bba74b36 | 3003 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3004 | p += strlen (p); |
3005 | p += hexnumstr (p, addr); | |
3006 | putpkt (rs->buf); | |
3007 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3008 | p = rs->buf; | |
3009 | ||
3010 | if (*p == 'E') | |
3011 | error (_("Remote failure reply: %s"), p); | |
3012 | ||
3013 | if (*p++ == 'm') | |
3014 | { | |
3015 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3016 | return 1; | |
3017 | } | |
3018 | ||
3019 | return 0; | |
3020 | } | |
3021 | ||
0fb4aa4b | 3022 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3023 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3024 | const char *strid) | |
0fb4aa4b PA |
3025 | { |
3026 | struct remote_state *rs = get_remote_state (); | |
3027 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3028 | struct static_tracepoint_marker *marker = NULL; | |
3029 | struct cleanup *old_chain; | |
3030 | char *p; | |
3031 | ||
3032 | /* Ask for a first packet of static tracepoint marker | |
3033 | definition. */ | |
3034 | putpkt ("qTfSTM"); | |
3035 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3036 | p = rs->buf; | |
3037 | if (*p == 'E') | |
3038 | error (_("Remote failure reply: %s"), p); | |
3039 | ||
3040 | old_chain = make_cleanup (free_current_marker, &marker); | |
3041 | ||
3042 | while (*p++ == 'm') | |
3043 | { | |
3044 | if (marker == NULL) | |
3045 | marker = XCNEW (struct static_tracepoint_marker); | |
3046 | ||
3047 | do | |
3048 | { | |
3049 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3050 | ||
3051 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3052 | { | |
3053 | VEC_safe_push (static_tracepoint_marker_p, | |
3054 | markers, marker); | |
3055 | marker = NULL; | |
3056 | } | |
3057 | else | |
3058 | { | |
3059 | release_static_tracepoint_marker (marker); | |
3060 | memset (marker, 0, sizeof (*marker)); | |
3061 | } | |
3062 | } | |
3063 | while (*p++ == ','); /* comma-separated list */ | |
3064 | /* Ask for another packet of static tracepoint definition. */ | |
3065 | putpkt ("qTsSTM"); | |
3066 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3067 | p = rs->buf; | |
3068 | } | |
3069 | ||
3070 | do_cleanups (old_chain); | |
3071 | return markers; | |
3072 | } | |
3073 | ||
3074 | \f | |
10760264 JB |
3075 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3076 | ||
3077 | static ptid_t | |
1e6b91a4 | 3078 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3079 | { |
ba348170 | 3080 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3081 | } |
3082 | \f | |
3083 | ||
24b06219 | 3084 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3085 | |
3086 | static void | |
fba45db2 | 3087 | extended_remote_restart (void) |
c906108c | 3088 | { |
d01949b6 | 3089 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3090 | |
3091 | /* Send the restart command; for reasons I don't understand the | |
3092 | remote side really expects a number after the "R". */ | |
ea9c271d | 3093 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3094 | putpkt (rs->buf); |
c906108c | 3095 | |
ad9a8f3f | 3096 | remote_fileio_reset (); |
c906108c SS |
3097 | } |
3098 | \f | |
3099 | /* Clean up connection to a remote debugger. */ | |
3100 | ||
c906108c | 3101 | static void |
de90e03d | 3102 | remote_close (struct target_ops *self) |
c906108c | 3103 | { |
5d93a237 TT |
3104 | struct remote_state *rs = get_remote_state (); |
3105 | ||
3106 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3107 | return; /* already closed */ |
3108 | ||
3109 | /* Make sure we leave stdin registered in the event loop, and we | |
3110 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3111 | remote_terminal_ours (self); |
ce5ce7ed | 3112 | |
5d93a237 TT |
3113 | serial_close (rs->remote_desc); |
3114 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3115 | |
3116 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3117 | of all the inferiors and their threads we were controlling. |
3118 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3119 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3120 | inferior_ptid = null_ptid; |
f67fd822 | 3121 | discard_all_inferiors (); |
ce5ce7ed | 3122 | |
f48ff2a7 YQ |
3123 | /* We are closing the remote target, so we should discard |
3124 | everything of this target. */ | |
bcc75809 | 3125 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3126 | |
3127 | if (remote_async_inferior_event_token) | |
3128 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3129 | |
5965e028 | 3130 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3131 | |
3132 | trace_reset_local_state (); | |
c906108c SS |
3133 | } |
3134 | ||
23860348 | 3135 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3136 | |
3137 | static void | |
fba45db2 | 3138 | get_offsets (void) |
c906108c | 3139 | { |
d01949b6 | 3140 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3141 | char *buf; |
085dd6e6 | 3142 | char *ptr; |
31d99776 DJ |
3143 | int lose, num_segments = 0, do_sections, do_segments; |
3144 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3145 | struct section_offsets *offs; |
31d99776 DJ |
3146 | struct symfile_segment_data *data; |
3147 | ||
3148 | if (symfile_objfile == NULL) | |
3149 | return; | |
c906108c SS |
3150 | |
3151 | putpkt ("qOffsets"); | |
6d820c5c | 3152 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3153 | buf = rs->buf; |
c906108c SS |
3154 | |
3155 | if (buf[0] == '\000') | |
3156 | return; /* Return silently. Stub doesn't support | |
23860348 | 3157 | this command. */ |
c906108c SS |
3158 | if (buf[0] == 'E') |
3159 | { | |
8a3fe4f8 | 3160 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3161 | return; |
3162 | } | |
3163 | ||
3164 | /* Pick up each field in turn. This used to be done with scanf, but | |
3165 | scanf will make trouble if CORE_ADDR size doesn't match | |
3166 | conversion directives correctly. The following code will work | |
3167 | with any size of CORE_ADDR. */ | |
3168 | text_addr = data_addr = bss_addr = 0; | |
3169 | ptr = buf; | |
3170 | lose = 0; | |
3171 | ||
61012eef | 3172 | if (startswith (ptr, "Text=")) |
c906108c SS |
3173 | { |
3174 | ptr += 5; | |
3175 | /* Don't use strtol, could lose on big values. */ | |
3176 | while (*ptr && *ptr != ';') | |
3177 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3178 | |
61012eef | 3179 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3180 | { |
3181 | ptr += 6; | |
3182 | while (*ptr && *ptr != ';') | |
3183 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3184 | } | |
3185 | else | |
3186 | lose = 1; | |
3187 | ||
61012eef | 3188 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3189 | { |
3190 | ptr += 5; | |
3191 | while (*ptr && *ptr != ';') | |
3192 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3193 | |
31d99776 DJ |
3194 | if (bss_addr != data_addr) |
3195 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3196 | } | |
3197 | else | |
3198 | lose = 1; | |
3199 | } | |
61012eef | 3200 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3201 | { |
31d99776 DJ |
3202 | ptr += 8; |
3203 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3204 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3205 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3206 | num_segments = 1; | |
3207 | ||
61012eef | 3208 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3209 | { |
3210 | ptr += 9; | |
3211 | while (*ptr && *ptr != ';') | |
3212 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3213 | num_segments++; | |
3214 | } | |
c906108c SS |
3215 | } |
3216 | else | |
3217 | lose = 1; | |
3218 | ||
3219 | if (lose) | |
8a3fe4f8 | 3220 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3221 | else if (*ptr != '\0') |
3222 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3223 | |
802188a7 | 3224 | offs = ((struct section_offsets *) |
a39a16c4 | 3225 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3226 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3227 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3228 | |
31d99776 DJ |
3229 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3230 | do_segments = (data != NULL); | |
3231 | do_sections = num_segments == 0; | |
c906108c | 3232 | |
28c32713 | 3233 | if (num_segments > 0) |
31d99776 | 3234 | { |
31d99776 DJ |
3235 | segments[0] = text_addr; |
3236 | segments[1] = data_addr; | |
3237 | } | |
28c32713 JB |
3238 | /* If we have two segments, we can still try to relocate everything |
3239 | by assuming that the .text and .data offsets apply to the whole | |
3240 | text and data segments. Convert the offsets given in the packet | |
3241 | to base addresses for symfile_map_offsets_to_segments. */ | |
3242 | else if (data && data->num_segments == 2) | |
3243 | { | |
3244 | segments[0] = data->segment_bases[0] + text_addr; | |
3245 | segments[1] = data->segment_bases[1] + data_addr; | |
3246 | num_segments = 2; | |
3247 | } | |
8d385431 DJ |
3248 | /* If the object file has only one segment, assume that it is text |
3249 | rather than data; main programs with no writable data are rare, | |
3250 | but programs with no code are useless. Of course the code might | |
3251 | have ended up in the data segment... to detect that we would need | |
3252 | the permissions here. */ | |
3253 | else if (data && data->num_segments == 1) | |
3254 | { | |
3255 | segments[0] = data->segment_bases[0] + text_addr; | |
3256 | num_segments = 1; | |
3257 | } | |
28c32713 JB |
3258 | /* There's no way to relocate by segment. */ |
3259 | else | |
3260 | do_segments = 0; | |
31d99776 DJ |
3261 | |
3262 | if (do_segments) | |
3263 | { | |
3264 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3265 | offs, num_segments, segments); | |
3266 | ||
3267 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3268 | error (_("Can not handle qOffsets TextSeg " |
3269 | "response with this symbol file")); | |
31d99776 DJ |
3270 | |
3271 | if (ret > 0) | |
3272 | do_sections = 0; | |
3273 | } | |
c906108c | 3274 | |
9ef895d6 DJ |
3275 | if (data) |
3276 | free_symfile_segment_data (data); | |
31d99776 DJ |
3277 | |
3278 | if (do_sections) | |
3279 | { | |
3280 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3281 | ||
3e43a32a MS |
3282 | /* This is a temporary kludge to force data and bss to use the |
3283 | same offsets because that's what nlmconv does now. The real | |
3284 | solution requires changes to the stub and remote.c that I | |
3285 | don't have time to do right now. */ | |
31d99776 DJ |
3286 | |
3287 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3288 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3289 | } | |
c906108c SS |
3290 | |
3291 | objfile_relocate (symfile_objfile, offs); | |
3292 | } | |
3293 | ||
74531fed PA |
3294 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3295 | threads we know are stopped already. This is used during the | |
3296 | initial remote connection in non-stop mode --- threads that are | |
3297 | reported as already being stopped are left stopped. */ | |
3298 | ||
3299 | static int | |
3300 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3301 | { | |
3302 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3303 | if (peek_stop_reply (thread->ptid)) | |
3304 | set_stop_requested (thread->ptid, 1); | |
3305 | ||
3306 | return 0; | |
3307 | } | |
3308 | ||
9a7071a8 JB |
3309 | /* Send interrupt_sequence to remote target. */ |
3310 | static void | |
eeae04df | 3311 | send_interrupt_sequence (void) |
9a7071a8 | 3312 | { |
5d93a237 TT |
3313 | struct remote_state *rs = get_remote_state (); |
3314 | ||
9a7071a8 | 3315 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3316 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3317 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3318 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3319 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3320 | { | |
5d93a237 | 3321 | serial_send_break (rs->remote_desc); |
c33e31fd | 3322 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3323 | } |
3324 | else | |
3325 | internal_error (__FILE__, __LINE__, | |
3326 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3327 | interrupt_sequence_mode); | |
3328 | } | |
3329 | ||
3405876a PA |
3330 | |
3331 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3332 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3333 | ||
3334 | static ptid_t | |
3335 | stop_reply_extract_thread (char *stop_reply) | |
3336 | { | |
3337 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3338 | { | |
3339 | char *p; | |
3340 | ||
3341 | /* Txx r:val ; r:val (...) */ | |
3342 | p = &stop_reply[3]; | |
3343 | ||
3344 | /* Look for "register" named "thread". */ | |
3345 | while (*p != '\0') | |
3346 | { | |
3347 | char *p1; | |
3348 | ||
3349 | p1 = strchr (p, ':'); | |
3350 | if (p1 == NULL) | |
3351 | return null_ptid; | |
3352 | ||
3353 | if (strncmp (p, "thread", p1 - p) == 0) | |
3354 | return read_ptid (++p1, &p); | |
3355 | ||
3356 | p1 = strchr (p, ';'); | |
3357 | if (p1 == NULL) | |
3358 | return null_ptid; | |
3359 | p1++; | |
3360 | ||
3361 | p = p1; | |
3362 | } | |
3363 | } | |
3364 | ||
3365 | return null_ptid; | |
3366 | } | |
3367 | ||
b7ea362b PA |
3368 | /* Determine the remote side's current thread. If we have a stop |
3369 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3370 | "thread" register we can extract the current thread from. If not, | |
3371 | ask the remote which is the current thread with qC. The former | |
3372 | method avoids a roundtrip. */ | |
3373 | ||
3374 | static ptid_t | |
3375 | get_current_thread (char *wait_status) | |
3376 | { | |
3377 | ptid_t ptid; | |
3378 | ||
3379 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3380 | the target architecture, which we haven't yet fully determined at | |
3381 | this point. */ | |
3382 | if (wait_status != NULL) | |
3383 | ptid = stop_reply_extract_thread (wait_status); | |
3384 | if (ptid_equal (ptid, null_ptid)) | |
3385 | ptid = remote_current_thread (inferior_ptid); | |
3386 | ||
3387 | return ptid; | |
3388 | } | |
3389 | ||
49c62f2e PA |
3390 | /* Query the remote target for which is the current thread/process, |
3391 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3392 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3393 | to return the current thread. |
3394 | ||
3395 | This function is called after handling the '?' or 'vRun' packets, | |
3396 | whose response is a stop reply from which we can also try | |
3397 | extracting the thread. If the target doesn't support the explicit | |
3398 | qC query, we infer the current thread from that stop reply, passed | |
3399 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3400 | |
3401 | static void | |
3405876a | 3402 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3403 | { |
3404 | struct remote_state *rs = get_remote_state (); | |
3405 | int fake_pid_p = 0; | |
3405876a | 3406 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3407 | |
3408 | inferior_ptid = null_ptid; | |
3409 | ||
b7ea362b PA |
3410 | /* Now, if we have thread information, update inferior_ptid. */ |
3411 | ptid = get_current_thread (wait_status); | |
3405876a | 3412 | |
49c62f2e PA |
3413 | if (!ptid_equal (ptid, null_ptid)) |
3414 | { | |
3415 | if (!remote_multi_process_p (rs)) | |
3416 | fake_pid_p = 1; | |
3417 | ||
3418 | inferior_ptid = ptid; | |
3419 | } | |
3420 | else | |
3421 | { | |
3422 | /* Without this, some commands which require an active target | |
3423 | (such as kill) won't work. This variable serves (at least) | |
3424 | double duty as both the pid of the target process (if it has | |
3425 | such), and as a flag indicating that a target is active. */ | |
3426 | inferior_ptid = magic_null_ptid; | |
3427 | fake_pid_p = 1; | |
3428 | } | |
3429 | ||
1b6e6f5c | 3430 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3431 | |
3432 | /* Add the main thread. */ | |
3433 | add_thread_silent (inferior_ptid); | |
3434 | } | |
3435 | ||
9cbc821d | 3436 | static void |
04bd08de | 3437 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3438 | { |
c8d104ad PA |
3439 | struct remote_state *rs = get_remote_state (); |
3440 | struct packet_config *noack_config; | |
2d717e4f | 3441 | char *wait_status = NULL; |
8621d6a9 | 3442 | |
23860348 | 3443 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3444 | QUIT; |
c906108c | 3445 | |
9a7071a8 JB |
3446 | if (interrupt_on_connect) |
3447 | send_interrupt_sequence (); | |
3448 | ||
57e12211 | 3449 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3450 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3451 | |
1e51243a PA |
3452 | /* Signal other parts that we're going through the initial setup, |
3453 | and so things may not be stable yet. */ | |
3454 | rs->starting_up = 1; | |
3455 | ||
c8d104ad PA |
3456 | /* The first packet we send to the target is the optional "supported |
3457 | packets" request. If the target can answer this, it will tell us | |
3458 | which later probes to skip. */ | |
3459 | remote_query_supported (); | |
3460 | ||
d914c394 | 3461 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3462 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3463 | remote_set_permissions (target); |
d914c394 | 3464 | |
c8d104ad PA |
3465 | /* Next, we possibly activate noack mode. |
3466 | ||
3467 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3468 | enable noack mode if the stub reported a wish for it with | |
3469 | qSupported. | |
3470 | ||
3471 | If set to TRUE, then enable noack mode even if the stub didn't | |
3472 | report it in qSupported. If the stub doesn't reply OK, the | |
3473 | session ends with an error. | |
3474 | ||
3475 | If FALSE, then don't activate noack mode, regardless of what the | |
3476 | stub claimed should be the default with qSupported. */ | |
3477 | ||
3478 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3479 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3480 | { |
3481 | putpkt ("QStartNoAckMode"); | |
3482 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3483 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3484 | rs->noack_mode = 1; | |
3485 | } | |
3486 | ||
04bd08de | 3487 | if (extended_p) |
5fe04517 PA |
3488 | { |
3489 | /* Tell the remote that we are using the extended protocol. */ | |
3490 | putpkt ("!"); | |
3491 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3492 | } | |
3493 | ||
9b224c5e PA |
3494 | /* Let the target know which signals it is allowed to pass down to |
3495 | the program. */ | |
3496 | update_signals_program_target (); | |
3497 | ||
d962ef82 DJ |
3498 | /* Next, if the target can specify a description, read it. We do |
3499 | this before anything involving memory or registers. */ | |
3500 | target_find_description (); | |
3501 | ||
6c95b8df PA |
3502 | /* Next, now that we know something about the target, update the |
3503 | address spaces in the program spaces. */ | |
3504 | update_address_spaces (); | |
3505 | ||
50c71eaf PA |
3506 | /* On OSs where the list of libraries is global to all |
3507 | processes, we fetch them early. */ | |
f5656ead | 3508 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3509 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3510 | |
74531fed PA |
3511 | if (non_stop) |
3512 | { | |
4082afcc | 3513 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3514 | error (_("Non-stop mode requested, but remote " |
3515 | "does not support non-stop")); | |
74531fed PA |
3516 | |
3517 | putpkt ("QNonStop:1"); | |
3518 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3519 | ||
3520 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3521 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3522 | |
3523 | /* Find about threads and processes the stub is already | |
3524 | controlling. We default to adding them in the running state. | |
3525 | The '?' query below will then tell us about which threads are | |
3526 | stopped. */ | |
e8032dde | 3527 | remote_update_thread_list (target); |
74531fed | 3528 | } |
4082afcc | 3529 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3530 | { |
3531 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3532 | Request it explicitly. */ |
74531fed PA |
3533 | putpkt ("QNonStop:0"); |
3534 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3535 | ||
3536 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3537 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3538 | } |
3539 | ||
a0743c90 YQ |
3540 | /* Upload TSVs regardless of whether the target is running or not. The |
3541 | remote stub, such as GDBserver, may have some predefined or builtin | |
3542 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3543 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3544 | { |
3545 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3546 | ||
181e3713 | 3547 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3548 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3549 | } | |
3550 | ||
2d717e4f DJ |
3551 | /* Check whether the target is running now. */ |
3552 | putpkt ("?"); | |
3553 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3554 | ||
74531fed | 3555 | if (!non_stop) |
2d717e4f | 3556 | { |
e714e1bf UW |
3557 | ptid_t ptid; |
3558 | int fake_pid_p = 0; | |
3559 | struct inferior *inf; | |
3560 | ||
74531fed | 3561 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3562 | { |
04bd08de | 3563 | if (!extended_p) |
74531fed | 3564 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3565 | |
3566 | /* We're connected, but not running. Drop out before we | |
3567 | call start_remote. */ | |
e278ad5b | 3568 | rs->starting_up = 0; |
c35b1492 | 3569 | return; |
2d717e4f DJ |
3570 | } |
3571 | else | |
74531fed | 3572 | { |
74531fed PA |
3573 | /* Save the reply for later. */ |
3574 | wait_status = alloca (strlen (rs->buf) + 1); | |
3575 | strcpy (wait_status, rs->buf); | |
3576 | } | |
3577 | ||
b7ea362b | 3578 | /* Fetch thread list. */ |
e8032dde | 3579 | target_update_thread_list (); |
b7ea362b | 3580 | |
74531fed PA |
3581 | /* Let the stub know that we want it to return the thread. */ |
3582 | set_continue_thread (minus_one_ptid); | |
3583 | ||
b7ea362b PA |
3584 | if (thread_count () == 0) |
3585 | { | |
3586 | /* Target has no concept of threads at all. GDB treats | |
3587 | non-threaded target as single-threaded; add a main | |
3588 | thread. */ | |
3589 | add_current_inferior_and_thread (wait_status); | |
3590 | } | |
3591 | else | |
3592 | { | |
3593 | /* We have thread information; select the thread the target | |
3594 | says should be current. If we're reconnecting to a | |
3595 | multi-threaded program, this will ideally be the thread | |
3596 | that last reported an event before GDB disconnected. */ | |
3597 | inferior_ptid = get_current_thread (wait_status); | |
3598 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3599 | { | |
3600 | /* Odd... The target was able to list threads, but not | |
3601 | tell us which thread was current (no "thread" | |
3602 | register in T stop reply?). Just pick the first | |
3603 | thread in the thread list then. */ | |
3604 | inferior_ptid = thread_list->ptid; | |
3605 | } | |
3606 | } | |
74531fed | 3607 | |
6e586cc5 YQ |
3608 | /* init_wait_for_inferior should be called before get_offsets in order |
3609 | to manage `inserted' flag in bp loc in a correct state. | |
3610 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3611 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3612 | start_remote, set `inserted' flag to 1. In the initialization of | |
3613 | inferior, breakpoint_init_inferior should be called first, and then | |
3614 | breakpoint_re_set can be called. If this order is broken, state of | |
3615 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3616 | manipulation. */ | |
3617 | init_wait_for_inferior (); | |
3618 | ||
74531fed PA |
3619 | get_offsets (); /* Get text, data & bss offsets. */ |
3620 | ||
d962ef82 DJ |
3621 | /* If we could not find a description using qXfer, and we know |
3622 | how to do it some other way, try again. This is not | |
3623 | supported for non-stop; it could be, but it is tricky if | |
3624 | there are no stopped threads when we connect. */ | |
04bd08de | 3625 | if (remote_read_description_p (target) |
f5656ead | 3626 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3627 | { |
3628 | target_clear_description (); | |
3629 | target_find_description (); | |
3630 | } | |
3631 | ||
74531fed PA |
3632 | /* Use the previously fetched status. */ |
3633 | gdb_assert (wait_status != NULL); | |
3634 | strcpy (rs->buf, wait_status); | |
3635 | rs->cached_wait_status = 1; | |
3636 | ||
3637 | immediate_quit--; | |
04bd08de | 3638 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3639 | } |
3640 | else | |
3641 | { | |
68c97600 PA |
3642 | /* Clear WFI global state. Do this before finding about new |
3643 | threads and inferiors, and setting the current inferior. | |
3644 | Otherwise we would clear the proceed status of the current | |
3645 | inferior when we want its stop_soon state to be preserved | |
3646 | (see notice_new_inferior). */ | |
3647 | init_wait_for_inferior (); | |
3648 | ||
74531fed PA |
3649 | /* In non-stop, we will either get an "OK", meaning that there |
3650 | are no stopped threads at this time; or, a regular stop | |
3651 | reply. In the latter case, there may be more than one thread | |
3652 | stopped --- we pull them all out using the vStopped | |
3653 | mechanism. */ | |
3654 | if (strcmp (rs->buf, "OK") != 0) | |
3655 | { | |
722247f1 | 3656 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3657 | |
722247f1 YQ |
3658 | /* remote_notif_get_pending_replies acks this one, and gets |
3659 | the rest out. */ | |
f48ff2a7 | 3660 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3661 | = remote_notif_parse (notif, rs->buf); |
3662 | remote_notif_get_pending_events (notif); | |
c906108c | 3663 | |
74531fed PA |
3664 | /* Make sure that threads that were stopped remain |
3665 | stopped. */ | |
3666 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3667 | } | |
2d717e4f | 3668 | |
74531fed | 3669 | if (target_can_async_p ()) |
6a3753b3 | 3670 | target_async (1); |
c906108c | 3671 | |
74531fed PA |
3672 | if (thread_count () == 0) |
3673 | { | |
04bd08de | 3674 | if (!extended_p) |
74531fed | 3675 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3676 | |
c35b1492 PA |
3677 | /* We're connected, but not running. Drop out before we |
3678 | call start_remote. */ | |
e278ad5b | 3679 | rs->starting_up = 0; |
c35b1492 PA |
3680 | return; |
3681 | } | |
74531fed PA |
3682 | |
3683 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3684 | |
74531fed PA |
3685 | /* Force the stub to choose a thread. */ |
3686 | set_general_thread (null_ptid); | |
c906108c | 3687 | |
74531fed PA |
3688 | /* Query it. */ |
3689 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3690 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3691 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3692 | |
74531fed PA |
3693 | get_offsets (); /* Get text, data & bss offsets. */ |
3694 | ||
3695 | /* In non-stop mode, any cached wait status will be stored in | |
3696 | the stop reply queue. */ | |
3697 | gdb_assert (wait_status == NULL); | |
f0223081 | 3698 | |
2455069d | 3699 | /* Report all signals during attach/startup. */ |
94bedb42 | 3700 | remote_pass_signals (target, 0, NULL); |
74531fed | 3701 | } |
c8d104ad | 3702 | |
c8d104ad PA |
3703 | /* If we connected to a live target, do some additional setup. */ |
3704 | if (target_has_execution) | |
3705 | { | |
f4ccffad | 3706 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3707 | remote_check_symbols (); |
c8d104ad | 3708 | } |
50c71eaf | 3709 | |
d5551862 SS |
3710 | /* Possibly the target has been engaged in a trace run started |
3711 | previously; find out where things are at. */ | |
8bd200f1 | 3712 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3713 | { |
00bf0b85 | 3714 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3715 | |
00bf0b85 SS |
3716 | if (current_trace_status ()->running) |
3717 | printf_filtered (_("Trace is already running on the target.\n")); | |
3718 | ||
ab6617cc | 3719 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3720 | |
3721 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3722 | } |
3723 | ||
1e51243a PA |
3724 | /* The thread and inferior lists are now synchronized with the |
3725 | target, our symbols have been relocated, and we're merged the | |
3726 | target's tracepoints with ours. We're done with basic start | |
3727 | up. */ | |
3728 | rs->starting_up = 0; | |
3729 | ||
a25a5a45 PA |
3730 | /* Maybe breakpoints are global and need to be inserted now. */ |
3731 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 3732 | insert_breakpoints (); |
c906108c SS |
3733 | } |
3734 | ||
3735 | /* Open a connection to a remote debugger. | |
3736 | NAME is the filename used for communication. */ | |
3737 | ||
3738 | static void | |
014f9477 | 3739 | remote_open (const char *name, int from_tty) |
c906108c | 3740 | { |
75c99385 | 3741 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3742 | } |
3743 | ||
c906108c SS |
3744 | /* Open a connection to a remote debugger using the extended |
3745 | remote gdb protocol. NAME is the filename used for communication. */ | |
3746 | ||
3747 | static void | |
014f9477 | 3748 | extended_remote_open (const char *name, int from_tty) |
c906108c | 3749 | { |
75c99385 | 3750 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3751 | } |
3752 | ||
ca4f7f8b PA |
3753 | /* Reset all packets back to "unknown support". Called when opening a |
3754 | new connection to a remote target. */ | |
c906108c | 3755 | |
d471ea57 | 3756 | static void |
ca4f7f8b | 3757 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3758 | { |
3759 | int i; | |
a744cf53 | 3760 | |
444abaca | 3761 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3762 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3763 | } |
3764 | ||
ca4f7f8b PA |
3765 | /* Initialize all packet configs. */ |
3766 | ||
3767 | static void | |
3768 | init_all_packet_configs (void) | |
3769 | { | |
3770 | int i; | |
3771 | ||
3772 | for (i = 0; i < PACKET_MAX; i++) | |
3773 | { | |
3774 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3775 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3776 | } | |
3777 | } | |
3778 | ||
23860348 | 3779 | /* Symbol look-up. */ |
dc8acb97 MS |
3780 | |
3781 | static void | |
36d25514 | 3782 | remote_check_symbols (void) |
dc8acb97 | 3783 | { |
d01949b6 | 3784 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 3785 | char *msg, *reply, *tmp; |
3b7344d5 | 3786 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
3787 | int end; |
3788 | ||
63154eca PA |
3789 | /* The remote side has no concept of inferiors that aren't running |
3790 | yet, it only knows about running processes. If we're connected | |
3791 | but our current inferior is not running, we should not invite the | |
3792 | remote target to request symbol lookups related to its | |
3793 | (unrelated) current process. */ | |
3794 | if (!target_has_execution) | |
3795 | return; | |
3796 | ||
4082afcc | 3797 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
3798 | return; |
3799 | ||
63154eca PA |
3800 | /* Make sure the remote is pointing at the right process. Note |
3801 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3802 | set_general_process (); |
3803 | ||
6d820c5c DJ |
3804 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3805 | because we need both at the same time. */ | |
ea9c271d | 3806 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3807 | |
23860348 | 3808 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3809 | |
3810 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3811 | getpkt (&rs->buf, &rs->buf_size, 0); |
3812 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3813 | reply = rs->buf; |
dc8acb97 | 3814 | |
61012eef | 3815 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 3816 | { |
77e371c0 TT |
3817 | struct bound_minimal_symbol sym; |
3818 | ||
dc8acb97 | 3819 | tmp = &reply[8]; |
cfd77fa1 | 3820 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3821 | msg[end] = '\0'; |
3822 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 3823 | if (sym.minsym == NULL) |
ea9c271d | 3824 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3825 | else |
2bbe3cc1 | 3826 | { |
f5656ead | 3827 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 3828 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
3829 | |
3830 | /* If this is a function address, return the start of code | |
3831 | instead of any data function descriptor. */ | |
f5656ead | 3832 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3833 | sym_addr, |
3834 | ¤t_target); | |
3835 | ||
3836 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3837 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3838 | } |
3839 | ||
dc8acb97 | 3840 | putpkt (msg); |
6d820c5c | 3841 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3842 | reply = rs->buf; |
dc8acb97 MS |
3843 | } |
3844 | } | |
3845 | ||
9db8d71f | 3846 | static struct serial * |
baa336ce | 3847 | remote_serial_open (const char *name) |
9db8d71f DJ |
3848 | { |
3849 | static int udp_warning = 0; | |
3850 | ||
3851 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3852 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3853 | serial connection is reliable and not the serial connection promising | |
3854 | to be. */ | |
61012eef | 3855 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 3856 | { |
3e43a32a MS |
3857 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3858 | "Some events may be lost, rendering further debugging " | |
3859 | "impossible.")); | |
9db8d71f DJ |
3860 | udp_warning = 1; |
3861 | } | |
3862 | ||
3863 | return serial_open (name); | |
3864 | } | |
3865 | ||
d914c394 SS |
3866 | /* Inform the target of our permission settings. The permission flags |
3867 | work without this, but if the target knows the settings, it can do | |
3868 | a couple things. First, it can add its own check, to catch cases | |
3869 | that somehow manage to get by the permissions checks in target | |
3870 | methods. Second, if the target is wired to disallow particular | |
3871 | settings (for instance, a system in the field that is not set up to | |
3872 | be able to stop at a breakpoint), it can object to any unavailable | |
3873 | permissions. */ | |
3874 | ||
3875 | void | |
c378d69d | 3876 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
3877 | { |
3878 | struct remote_state *rs = get_remote_state (); | |
3879 | ||
bba74b36 YQ |
3880 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3881 | "WriteReg:%x;WriteMem:%x;" | |
3882 | "InsertBreak:%x;InsertTrace:%x;" | |
3883 | "InsertFastTrace:%x;Stop:%x", | |
3884 | may_write_registers, may_write_memory, | |
3885 | may_insert_breakpoints, may_insert_tracepoints, | |
3886 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3887 | putpkt (rs->buf); |
3888 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3889 | ||
3890 | /* If the target didn't like the packet, warn the user. Do not try | |
3891 | to undo the user's settings, that would just be maddening. */ | |
3892 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3893 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3894 | } |
3895 | ||
be2a5f71 DJ |
3896 | /* This type describes each known response to the qSupported |
3897 | packet. */ | |
3898 | struct protocol_feature | |
3899 | { | |
3900 | /* The name of this protocol feature. */ | |
3901 | const char *name; | |
3902 | ||
3903 | /* The default for this protocol feature. */ | |
3904 | enum packet_support default_support; | |
3905 | ||
3906 | /* The function to call when this feature is reported, or after | |
3907 | qSupported processing if the feature is not supported. | |
3908 | The first argument points to this structure. The second | |
3909 | argument indicates whether the packet requested support be | |
3910 | enabled, disabled, or probed (or the default, if this function | |
3911 | is being called at the end of processing and this feature was | |
3912 | not reported). The third argument may be NULL; if not NULL, it | |
3913 | is a NUL-terminated string taken from the packet following | |
3914 | this feature's name and an equals sign. */ | |
3915 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3916 | const char *); | |
3917 | ||
3918 | /* The corresponding packet for this feature. Only used if | |
3919 | FUNC is remote_supported_packet. */ | |
3920 | int packet; | |
3921 | }; | |
3922 | ||
be2a5f71 DJ |
3923 | static void |
3924 | remote_supported_packet (const struct protocol_feature *feature, | |
3925 | enum packet_support support, | |
3926 | const char *argument) | |
3927 | { | |
3928 | if (argument) | |
3929 | { | |
3930 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3931 | " \"%s\"."), feature->name); | |
3932 | return; | |
3933 | } | |
3934 | ||
4082afcc | 3935 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 3936 | } |
be2a5f71 DJ |
3937 | |
3938 | static void | |
3939 | remote_packet_size (const struct protocol_feature *feature, | |
3940 | enum packet_support support, const char *value) | |
3941 | { | |
3942 | struct remote_state *rs = get_remote_state (); | |
3943 | ||
3944 | int packet_size; | |
3945 | char *value_end; | |
3946 | ||
3947 | if (support != PACKET_ENABLE) | |
3948 | return; | |
3949 | ||
3950 | if (value == NULL || *value == '\0') | |
3951 | { | |
3952 | warning (_("Remote target reported \"%s\" without a size."), | |
3953 | feature->name); | |
3954 | return; | |
3955 | } | |
3956 | ||
3957 | errno = 0; | |
3958 | packet_size = strtol (value, &value_end, 16); | |
3959 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3960 | { | |
3961 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3962 | feature->name, value); | |
3963 | return; | |
3964 | } | |
3965 | ||
3966 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3967 | { | |
3968 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3969 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3970 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3971 | } | |
3972 | ||
3973 | /* Record the new maximum packet size. */ | |
3974 | rs->explicit_packet_size = packet_size; | |
3975 | } | |
3976 | ||
dc473cfb | 3977 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3978 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3979 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3980 | PACKET_qXfer_auxv }, |
c78fa86a GB |
3981 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
3982 | PACKET_qXfer_exec_file }, | |
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 | 3989 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 3990 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
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 }, | |
4082afcc PA |
4009 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4010 | PACKET_multiprocess_feature }, | |
4011 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4012 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4013 | PACKET_qXfer_siginfo_read }, | |
4014 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4015 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4016 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4017 | PACKET_ConditionalTracepoints }, |
4082afcc | 4018 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4019 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4020 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4021 | PACKET_BreakpointCommands }, |
4082afcc | 4022 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4023 | PACKET_FastTracepoints }, |
4082afcc | 4024 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4025 | PACKET_StaticTracepoints }, |
4082afcc | 4026 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4027 | PACKET_InstallInTrace}, |
4082afcc PA |
4028 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4029 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4030 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4031 | PACKET_bc }, | |
4032 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4033 | PACKET_bs }, | |
409873ef SS |
4034 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4035 | PACKET_TracepointSource }, | |
d914c394 SS |
4036 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4037 | PACKET_QAllow }, | |
4082afcc PA |
4038 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4039 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4040 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4041 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4042 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4043 | PACKET_qXfer_uib }, | |
03583c20 UW |
4044 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4045 | PACKET_QDisableRandomization }, | |
d1feda86 | 4046 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4047 | { "QTBuffer:size", PACKET_DISABLE, |
4048 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4049 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
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, | |
f4abbc16 MM |
4053 | PACKET_qXfer_btrace }, |
4054 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4055 | PACKET_qXfer_btrace_conf }, |
4056 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4057 | PACKET_Qbtrace_conf_bts_size }, |
4058 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4059 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4060 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4061 | PACKET_fork_event_feature }, | |
4062 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4063 | PACKET_vfork_event_feature }, | |
be2a5f71 DJ |
4064 | }; |
4065 | ||
c8d5aac9 L |
4066 | static char *remote_support_xml; |
4067 | ||
4068 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4069 | ||
4070 | void | |
6e39997a | 4071 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4072 | { |
4073 | #if defined(HAVE_LIBEXPAT) | |
4074 | if (remote_support_xml == NULL) | |
c4f7c687 | 4075 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4076 | else |
4077 | { | |
4078 | char *copy = xstrdup (remote_support_xml + 13); | |
4079 | char *p = strtok (copy, ","); | |
4080 | ||
4081 | do | |
4082 | { | |
4083 | if (strcmp (p, xml) == 0) | |
4084 | { | |
4085 | /* already there */ | |
4086 | xfree (copy); | |
4087 | return; | |
4088 | } | |
4089 | } | |
4090 | while ((p = strtok (NULL, ",")) != NULL); | |
4091 | xfree (copy); | |
4092 | ||
94b0dee1 PA |
4093 | remote_support_xml = reconcat (remote_support_xml, |
4094 | remote_support_xml, ",", xml, | |
4095 | (char *) NULL); | |
c8d5aac9 L |
4096 | } |
4097 | #endif | |
4098 | } | |
4099 | ||
4100 | static char * | |
4101 | remote_query_supported_append (char *msg, const char *append) | |
4102 | { | |
4103 | if (msg) | |
94b0dee1 | 4104 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4105 | else |
4106 | return xstrdup (append); | |
4107 | } | |
4108 | ||
be2a5f71 DJ |
4109 | static void |
4110 | remote_query_supported (void) | |
4111 | { | |
4112 | struct remote_state *rs = get_remote_state (); | |
4113 | char *next; | |
4114 | int i; | |
4115 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4116 | ||
4117 | /* The packet support flags are handled differently for this packet | |
4118 | than for most others. We treat an error, a disabled packet, and | |
4119 | an empty response identically: any features which must be reported | |
4120 | to be used will be automatically disabled. An empty buffer | |
4121 | accomplishes this, since that is also the representation for a list | |
4122 | containing no features. */ | |
4123 | ||
4124 | rs->buf[0] = 0; | |
4082afcc | 4125 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4126 | { |
c8d5aac9 | 4127 | char *q = NULL; |
94b0dee1 | 4128 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4129 | |
901f9912 | 4130 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 | 4131 | |
f7e6eed5 PA |
4132 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4133 | q = remote_query_supported_append (q, "swbreak+"); | |
4134 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4135 | q = remote_query_supported_append (q, "hwbreak+"); | |
4136 | ||
c8d5aac9 L |
4137 | if (remote_support_xml) |
4138 | q = remote_query_supported_append (q, remote_support_xml); | |
4139 | ||
dde08ee1 PA |
4140 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4141 | ||
89245bc0 DB |
4142 | if (rs->extended) |
4143 | { | |
4144 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4145 | != AUTO_BOOLEAN_FALSE) | |
4146 | q = remote_query_supported_append (q, "fork-events+"); | |
4147 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4148 | != AUTO_BOOLEAN_FALSE) | |
4149 | q = remote_query_supported_append (q, "vfork-events+"); | |
4150 | } | |
4151 | ||
dde08ee1 PA |
4152 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4153 | putpkt (q); | |
82f73884 | 4154 | |
94b0dee1 PA |
4155 | do_cleanups (old_chain); |
4156 | ||
be2a5f71 DJ |
4157 | getpkt (&rs->buf, &rs->buf_size, 0); |
4158 | ||
4159 | /* If an error occured, warn, but do not return - just reset the | |
4160 | buffer to empty and go on to disable features. */ | |
4161 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4162 | == PACKET_ERROR) | |
4163 | { | |
4164 | warning (_("Remote failure reply: %s"), rs->buf); | |
4165 | rs->buf[0] = 0; | |
4166 | } | |
4167 | } | |
4168 | ||
4169 | memset (seen, 0, sizeof (seen)); | |
4170 | ||
4171 | next = rs->buf; | |
4172 | while (*next) | |
4173 | { | |
4174 | enum packet_support is_supported; | |
4175 | char *p, *end, *name_end, *value; | |
4176 | ||
4177 | /* First separate out this item from the rest of the packet. If | |
4178 | there's another item after this, we overwrite the separator | |
4179 | (terminated strings are much easier to work with). */ | |
4180 | p = next; | |
4181 | end = strchr (p, ';'); | |
4182 | if (end == NULL) | |
4183 | { | |
4184 | end = p + strlen (p); | |
4185 | next = end; | |
4186 | } | |
4187 | else | |
4188 | { | |
89be2091 DJ |
4189 | *end = '\0'; |
4190 | next = end + 1; | |
4191 | ||
be2a5f71 DJ |
4192 | if (end == p) |
4193 | { | |
4194 | warning (_("empty item in \"qSupported\" response")); | |
4195 | continue; | |
4196 | } | |
be2a5f71 DJ |
4197 | } |
4198 | ||
4199 | name_end = strchr (p, '='); | |
4200 | if (name_end) | |
4201 | { | |
4202 | /* This is a name=value entry. */ | |
4203 | is_supported = PACKET_ENABLE; | |
4204 | value = name_end + 1; | |
4205 | *name_end = '\0'; | |
4206 | } | |
4207 | else | |
4208 | { | |
4209 | value = NULL; | |
4210 | switch (end[-1]) | |
4211 | { | |
4212 | case '+': | |
4213 | is_supported = PACKET_ENABLE; | |
4214 | break; | |
4215 | ||
4216 | case '-': | |
4217 | is_supported = PACKET_DISABLE; | |
4218 | break; | |
4219 | ||
4220 | case '?': | |
4221 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4222 | break; | |
4223 | ||
4224 | default: | |
3e43a32a MS |
4225 | warning (_("unrecognized item \"%s\" " |
4226 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4227 | continue; |
4228 | } | |
4229 | end[-1] = '\0'; | |
4230 | } | |
4231 | ||
4232 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4233 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4234 | { | |
4235 | const struct protocol_feature *feature; | |
4236 | ||
4237 | seen[i] = 1; | |
4238 | feature = &remote_protocol_features[i]; | |
4239 | feature->func (feature, is_supported, value); | |
4240 | break; | |
4241 | } | |
4242 | } | |
4243 | ||
4244 | /* If we increased the packet size, make sure to increase the global | |
4245 | buffer size also. We delay this until after parsing the entire | |
4246 | qSupported packet, because this is the same buffer we were | |
4247 | parsing. */ | |
4248 | if (rs->buf_size < rs->explicit_packet_size) | |
4249 | { | |
4250 | rs->buf_size = rs->explicit_packet_size; | |
4251 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4252 | } | |
4253 | ||
4254 | /* Handle the defaults for unmentioned features. */ | |
4255 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4256 | if (!seen[i]) | |
4257 | { | |
4258 | const struct protocol_feature *feature; | |
4259 | ||
4260 | feature = &remote_protocol_features[i]; | |
4261 | feature->func (feature, feature->default_support, NULL); | |
4262 | } | |
4263 | } | |
4264 | ||
78a095c3 JK |
4265 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4266 | on it so remove them first. */ | |
4267 | ||
4268 | static void | |
4269 | remote_unpush_target (void) | |
4270 | { | |
4271 | pop_all_targets_above (process_stratum - 1); | |
4272 | } | |
be2a5f71 | 4273 | |
c906108c | 4274 | static void |
014f9477 | 4275 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4276 | struct target_ops *target, int extended_p) |
c906108c | 4277 | { |
d01949b6 | 4278 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4279 | |
c906108c | 4280 | if (name == 0) |
8a3fe4f8 | 4281 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4282 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4283 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4284 | |
23860348 | 4285 | /* See FIXME above. */ |
c6ebd6cf | 4286 | if (!target_async_permitted) |
92d1e331 | 4287 | wait_forever_enabled_p = 1; |
6426a772 | 4288 | |
2d717e4f | 4289 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4290 | Ask this question first, before target_preopen has a chance to kill |
4291 | anything. */ | |
5d93a237 | 4292 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4293 | { |
78a095c3 JK |
4294 | if (from_tty |
4295 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4296 | error (_("Still connected.")); |
4297 | } | |
4298 | ||
78a095c3 | 4299 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4300 | target_preopen (from_tty); |
4301 | ||
89be2091 | 4302 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4303 | xfree (rs->last_pass_packet); |
4304 | rs->last_pass_packet = NULL; | |
89be2091 | 4305 | |
9b224c5e PA |
4306 | /* Make sure we send the program signals list the next time we |
4307 | resume. */ | |
5e4a05c4 TT |
4308 | xfree (rs->last_program_signals_packet); |
4309 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4310 | |
ad9a8f3f | 4311 | remote_fileio_reset (); |
1dd41f16 NS |
4312 | reopen_exec_file (); |
4313 | reread_symbols (); | |
4314 | ||
5d93a237 TT |
4315 | rs->remote_desc = remote_serial_open (name); |
4316 | if (!rs->remote_desc) | |
c906108c SS |
4317 | perror_with_name (name); |
4318 | ||
4319 | if (baud_rate != -1) | |
4320 | { | |
5d93a237 | 4321 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4322 | { |
9b74d5d3 KB |
4323 | /* The requested speed could not be set. Error out to |
4324 | top level after closing remote_desc. Take care to | |
4325 | set remote_desc to NULL to avoid closing remote_desc | |
4326 | more than once. */ | |
5d93a237 TT |
4327 | serial_close (rs->remote_desc); |
4328 | rs->remote_desc = NULL; | |
c906108c SS |
4329 | perror_with_name (name); |
4330 | } | |
4331 | } | |
4332 | ||
236af5e3 | 4333 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4334 | serial_raw (rs->remote_desc); |
c906108c SS |
4335 | |
4336 | /* If there is something sitting in the buffer we might take it as a | |
4337 | response to a command, which would be bad. */ | |
5d93a237 | 4338 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4339 | |
4340 | if (from_tty) | |
4341 | { | |
4342 | puts_filtered ("Remote debugging using "); | |
4343 | puts_filtered (name); | |
4344 | puts_filtered ("\n"); | |
4345 | } | |
23860348 | 4346 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4347 | |
74531fed PA |
4348 | /* Register extra event sources in the event loop. */ |
4349 | remote_async_inferior_event_token | |
4350 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4351 | NULL); | |
5965e028 | 4352 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4353 | |
be2a5f71 DJ |
4354 | /* Reset the target state; these things will be queried either by |
4355 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4356 | reset_all_packet_configs_support (); |
74531fed | 4357 | rs->cached_wait_status = 0; |
be2a5f71 | 4358 | rs->explicit_packet_size = 0; |
a6f3e723 | 4359 | rs->noack_mode = 0; |
82f73884 | 4360 | rs->extended = extended_p; |
e24a49d8 | 4361 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4362 | rs->ctrlc_pending_p = 0; |
802188a7 | 4363 | |
47f8a51d TT |
4364 | rs->general_thread = not_sent_ptid; |
4365 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4366 | rs->remote_traceframe_number = -1; |
c906108c | 4367 | |
9d1f7ab2 | 4368 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4369 | rs->use_threadinfo_query = 1; |
4370 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4371 | |
c6ebd6cf | 4372 | if (target_async_permitted) |
92d1e331 | 4373 | { |
23860348 | 4374 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4375 | remote_async_terminal_ours_p = 1; |
4376 | ||
4377 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4378 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4379 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4380 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4381 | around this. Eventually a mechanism that allows |
92d1e331 | 4382 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4383 | implemented. */ |
92d1e331 DJ |
4384 | wait_forever_enabled_p = 0; |
4385 | } | |
4386 | ||
23860348 | 4387 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4388 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4389 | |
74531fed PA |
4390 | /* Start afresh. */ |
4391 | init_thread_list (); | |
4392 | ||
36918e70 | 4393 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4394 | target (we'd otherwise be in an inconsistent state) and then |
4395 | propogate the error on up the exception chain. This ensures that | |
4396 | the caller doesn't stumble along blindly assuming that the | |
4397 | function succeeded. The CLI doesn't have this problem but other | |
4398 | UI's, such as MI do. | |
36918e70 AC |
4399 | |
4400 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4401 | this function should return an error indication letting the | |
ce2826aa | 4402 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4403 | ``target remote'' is directly wired to this function making that |
4404 | impossible. On a positive note, the CLI side of this problem has | |
4405 | been fixed - the function set_cmd_context() makes it possible for | |
4406 | all the ``target ....'' commands to share a common callback | |
4407 | function. See cli-dump.c. */ | |
109c3e39 | 4408 | { |
2d717e4f | 4409 | |
492d29ea | 4410 | TRY |
04bd08de TT |
4411 | { |
4412 | remote_start_remote (from_tty, target, extended_p); | |
4413 | } | |
492d29ea | 4414 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4415 | { |
c8d104ad PA |
4416 | /* Pop the partially set up target - unless something else did |
4417 | already before throwing the exception. */ | |
5d93a237 | 4418 | if (rs->remote_desc != NULL) |
78a095c3 | 4419 | remote_unpush_target (); |
c6ebd6cf | 4420 | if (target_async_permitted) |
109c3e39 AC |
4421 | wait_forever_enabled_p = 1; |
4422 | throw_exception (ex); | |
4423 | } | |
492d29ea | 4424 | END_CATCH |
109c3e39 | 4425 | } |
c906108c | 4426 | |
f4abbc16 MM |
4427 | remote_btrace_reset (); |
4428 | ||
c6ebd6cf | 4429 | if (target_async_permitted) |
92d1e331 | 4430 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4431 | } |
4432 | ||
c906108c SS |
4433 | /* This takes a program previously attached to and detaches it. After |
4434 | this is done, GDB can be used to debug some other program. We | |
4435 | better not have left any breakpoints in the target program or it'll | |
4436 | die when it hits one. */ | |
4437 | ||
4438 | static void | |
52554a0e | 4439 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4440 | { |
82f73884 | 4441 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4442 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4443 | |
4444 | if (args) | |
8a3fe4f8 | 4445 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4446 | |
2d717e4f DJ |
4447 | if (!target_has_execution) |
4448 | error (_("No process to detach from.")); | |
4449 | ||
7cee1e54 PA |
4450 | if (from_tty) |
4451 | { | |
4452 | char *exec_file = get_exec_file (0); | |
4453 | if (exec_file == NULL) | |
4454 | exec_file = ""; | |
4455 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4456 | target_pid_to_str (pid_to_ptid (pid))); | |
4457 | gdb_flush (gdb_stdout); | |
4458 | } | |
4459 | ||
c906108c | 4460 | /* Tell the remote target to detach. */ |
82f73884 | 4461 | if (remote_multi_process_p (rs)) |
bba74b36 | 4462 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4463 | else |
4464 | strcpy (rs->buf, "D"); | |
4465 | ||
4ddda9b5 PA |
4466 | putpkt (rs->buf); |
4467 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4468 | ||
82f73884 PA |
4469 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4470 | ; | |
4471 | else if (rs->buf[0] == '\0') | |
4472 | error (_("Remote doesn't know how to detach")); | |
4473 | else | |
4ddda9b5 | 4474 | error (_("Can't detach process.")); |
c906108c | 4475 | |
7cee1e54 PA |
4476 | if (from_tty && !extended) |
4477 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4478 | |
82f73884 | 4479 | target_mourn_inferior (); |
2d717e4f DJ |
4480 | } |
4481 | ||
4482 | static void | |
52554a0e | 4483 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4484 | { |
4485 | remote_detach_1 (args, from_tty, 0); | |
4486 | } | |
4487 | ||
4488 | static void | |
52554a0e | 4489 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4490 | { |
4491 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4492 | } |
4493 | ||
6ad8ae5c DJ |
4494 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4495 | ||
43ff13b4 | 4496 | static void |
fee354ee | 4497 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4498 | { |
43ff13b4 | 4499 | if (args) |
2d717e4f | 4500 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4501 | |
2d717e4f | 4502 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4503 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4504 | target_mourn_inferior. */ |
20f796c9 | 4505 | remote_mourn (target); |
2d717e4f | 4506 | |
43ff13b4 JM |
4507 | if (from_tty) |
4508 | puts_filtered ("Ending remote debugging.\n"); | |
4509 | } | |
4510 | ||
2d717e4f DJ |
4511 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4512 | be chatty about it. */ | |
4513 | ||
4514 | static void | |
20f796c9 GB |
4515 | extended_remote_attach (struct target_ops *target, const char *args, |
4516 | int from_tty) | |
2d717e4f DJ |
4517 | { |
4518 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4519 | int pid; |
96ef3384 | 4520 | char *wait_status = NULL; |
2d717e4f | 4521 | |
74164c56 | 4522 | pid = parse_pid_to_attach (args); |
2d717e4f | 4523 | |
74164c56 JK |
4524 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4525 | way as in other targets. */ | |
2d717e4f | 4526 | |
4082afcc | 4527 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4528 | error (_("This target does not support attaching to a process")); |
4529 | ||
7cee1e54 PA |
4530 | if (from_tty) |
4531 | { | |
4532 | char *exec_file = get_exec_file (0); | |
4533 | ||
4534 | if (exec_file) | |
4535 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4536 | target_pid_to_str (pid_to_ptid (pid))); | |
4537 | else | |
4538 | printf_unfiltered (_("Attaching to %s\n"), | |
4539 | target_pid_to_str (pid_to_ptid (pid))); | |
4540 | ||
4541 | gdb_flush (gdb_stdout); | |
4542 | } | |
4543 | ||
bba74b36 | 4544 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4545 | putpkt (rs->buf); |
4546 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4547 | ||
4082afcc PA |
4548 | switch (packet_ok (rs->buf, |
4549 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4550 | { |
4082afcc | 4551 | case PACKET_OK: |
74531fed PA |
4552 | if (!non_stop) |
4553 | { | |
4554 | /* Save the reply for later. */ | |
4555 | wait_status = alloca (strlen (rs->buf) + 1); | |
4556 | strcpy (wait_status, rs->buf); | |
4557 | } | |
4558 | else if (strcmp (rs->buf, "OK") != 0) | |
4559 | error (_("Attaching to %s failed with: %s"), | |
4560 | target_pid_to_str (pid_to_ptid (pid)), | |
4561 | rs->buf); | |
4082afcc PA |
4562 | break; |
4563 | case PACKET_UNKNOWN: | |
4564 | error (_("This target does not support attaching to a process")); | |
4565 | default: | |
4566 | error (_("Attaching to %s failed"), | |
4567 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4568 | } |
2d717e4f | 4569 | |
1b6e6f5c | 4570 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4571 | |
2d717e4f | 4572 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4573 | |
bad34192 PA |
4574 | if (non_stop) |
4575 | { | |
4576 | struct thread_info *thread; | |
79d7f229 | 4577 | |
bad34192 | 4578 | /* Get list of threads. */ |
e8032dde | 4579 | remote_update_thread_list (target); |
82f73884 | 4580 | |
bad34192 PA |
4581 | thread = first_thread_of_process (pid); |
4582 | if (thread) | |
4583 | inferior_ptid = thread->ptid; | |
4584 | else | |
4585 | inferior_ptid = pid_to_ptid (pid); | |
4586 | ||
4587 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4588 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4589 | } |
74531fed | 4590 | else |
bad34192 PA |
4591 | { |
4592 | /* Now, if we have thread information, update inferior_ptid. */ | |
4593 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4594 | ||
4595 | /* Add the main thread to the thread list. */ | |
4596 | add_thread_silent (inferior_ptid); | |
4597 | } | |
c0a2216e | 4598 | |
96ef3384 UW |
4599 | /* Next, if the target can specify a description, read it. We do |
4600 | this before anything involving memory or registers. */ | |
4601 | target_find_description (); | |
4602 | ||
74531fed PA |
4603 | if (!non_stop) |
4604 | { | |
4605 | /* Use the previously fetched status. */ | |
4606 | gdb_assert (wait_status != NULL); | |
4607 | ||
4608 | if (target_can_async_p ()) | |
4609 | { | |
722247f1 YQ |
4610 | struct notif_event *reply |
4611 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4612 | |
722247f1 | 4613 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4614 | |
6a3753b3 | 4615 | target_async (1); |
74531fed PA |
4616 | } |
4617 | else | |
4618 | { | |
4619 | gdb_assert (wait_status != NULL); | |
4620 | strcpy (rs->buf, wait_status); | |
4621 | rs->cached_wait_status = 1; | |
4622 | } | |
4623 | } | |
4624 | else | |
4625 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4626 | } |
4627 | ||
b9c1d481 AS |
4628 | /* Implementation of the to_post_attach method. */ |
4629 | ||
4630 | static void | |
4631 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
4632 | { | |
4633 | /* In certain cases GDB might not have had the chance to start | |
4634 | symbol lookup up until now. This could happen if the debugged | |
4635 | binary is not using shared libraries, the vsyscall page is not | |
4636 | present (on Linux) and the binary itself hadn't changed since the | |
4637 | debugging process was started. */ | |
4638 | if (symfile_objfile != NULL) | |
4639 | remote_check_symbols(); | |
4640 | } | |
4641 | ||
c906108c | 4642 | \f |
506fb367 DJ |
4643 | /* Check for the availability of vCont. This function should also check |
4644 | the response. */ | |
c906108c SS |
4645 | |
4646 | static void | |
6d820c5c | 4647 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4648 | { |
2e9f7625 | 4649 | char *buf; |
6d820c5c | 4650 | |
2e9f7625 DJ |
4651 | strcpy (rs->buf, "vCont?"); |
4652 | putpkt (rs->buf); | |
6d820c5c | 4653 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4654 | buf = rs->buf; |
c906108c | 4655 | |
506fb367 | 4656 | /* Make sure that the features we assume are supported. */ |
61012eef | 4657 | if (startswith (buf, "vCont")) |
506fb367 DJ |
4658 | { |
4659 | char *p = &buf[5]; | |
4660 | int support_s, support_S, support_c, support_C; | |
4661 | ||
4662 | support_s = 0; | |
4663 | support_S = 0; | |
4664 | support_c = 0; | |
4665 | support_C = 0; | |
d458bd84 | 4666 | rs->supports_vCont.t = 0; |
c1e36e3e | 4667 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4668 | while (p && *p == ';') |
4669 | { | |
4670 | p++; | |
4671 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4672 | support_s = 1; | |
4673 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4674 | support_S = 1; | |
4675 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4676 | support_c = 1; | |
4677 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4678 | support_C = 1; | |
74531fed | 4679 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4680 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4681 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4682 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4683 | |
4684 | p = strchr (p, ';'); | |
4685 | } | |
c906108c | 4686 | |
506fb367 DJ |
4687 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4688 | BUF will make packet_ok disable the packet. */ | |
4689 | if (!support_s || !support_S || !support_c || !support_C) | |
4690 | buf[0] = 0; | |
4691 | } | |
c906108c | 4692 | |
444abaca | 4693 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4694 | } |
c906108c | 4695 | |
0d8f58ca PA |
4696 | /* Helper function for building "vCont" resumptions. Write a |
4697 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4698 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4699 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4700 | resumed thread should be single-stepped and/or signalled. If PTID | |
4701 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4702 | represents a process, then all threads of the process are resumed; | |
4703 | the thread to be stepped and/or signalled is given in the global | |
4704 | INFERIOR_PTID. */ | |
4705 | ||
4706 | static char * | |
4707 | append_resumption (char *p, char *endp, | |
2ea28649 | 4708 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4709 | { |
4710 | struct remote_state *rs = get_remote_state (); | |
4711 | ||
a493e3e2 | 4712 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4713 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4714 | else if (step |
4715 | /* GDB is willing to range step. */ | |
4716 | && use_range_stepping | |
4717 | /* Target supports range stepping. */ | |
4718 | && rs->supports_vCont.r | |
4719 | /* We don't currently support range stepping multiple | |
4720 | threads with a wildcard (though the protocol allows it, | |
4721 | so stubs shouldn't make an active effort to forbid | |
4722 | it). */ | |
4723 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4724 | { | |
4725 | struct thread_info *tp; | |
4726 | ||
4727 | if (ptid_equal (ptid, minus_one_ptid)) | |
4728 | { | |
4729 | /* If we don't know about the target thread's tid, then | |
4730 | we're resuming magic_null_ptid (see caller). */ | |
4731 | tp = find_thread_ptid (magic_null_ptid); | |
4732 | } | |
4733 | else | |
4734 | tp = find_thread_ptid (ptid); | |
4735 | gdb_assert (tp != NULL); | |
4736 | ||
4737 | if (tp->control.may_range_step) | |
4738 | { | |
4739 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4740 | ||
4741 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4742 | phex_nz (tp->control.step_range_start, | |
4743 | addr_size), | |
4744 | phex_nz (tp->control.step_range_end, | |
4745 | addr_size)); | |
4746 | } | |
4747 | else | |
4748 | p += xsnprintf (p, endp - p, ";s"); | |
4749 | } | |
0d8f58ca PA |
4750 | else if (step) |
4751 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4752 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4753 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4754 | else | |
4755 | p += xsnprintf (p, endp - p, ";c"); | |
4756 | ||
4757 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4758 | { | |
4759 | ptid_t nptid; | |
4760 | ||
4761 | /* All (-1) threads of process. */ | |
ba348170 | 4762 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
4763 | |
4764 | p += xsnprintf (p, endp - p, ":"); | |
4765 | p = write_ptid (p, endp, nptid); | |
4766 | } | |
4767 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4768 | { | |
4769 | p += xsnprintf (p, endp - p, ":"); | |
4770 | p = write_ptid (p, endp, ptid); | |
4771 | } | |
4772 | ||
4773 | return p; | |
4774 | } | |
4775 | ||
e5ef252a PA |
4776 | /* Append a vCont continue-with-signal action for threads that have a |
4777 | non-zero stop signal. */ | |
4778 | ||
4779 | static char * | |
4780 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4781 | { | |
4782 | struct thread_info *thread; | |
4783 | ||
034f788c | 4784 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
4785 | if (ptid_match (thread->ptid, ptid) |
4786 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 4787 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
4788 | { |
4789 | p = append_resumption (p, endp, thread->ptid, | |
4790 | 0, thread->suspend.stop_signal); | |
4791 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4792 | } | |
4793 | ||
4794 | return p; | |
4795 | } | |
4796 | ||
506fb367 DJ |
4797 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4798 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4799 | resumed thread should be single-stepped and/or signalled. If PTID |
4800 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4801 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4802 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4803 | |
506fb367 DJ |
4804 | This function issues a strict subset of all possible vCont commands at the |
4805 | moment. */ | |
44eaed12 | 4806 | |
506fb367 | 4807 | static int |
2ea28649 | 4808 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4809 | { |
4810 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4811 | char *p; |
4812 | char *endp; | |
44eaed12 | 4813 | |
4082afcc | 4814 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4815 | remote_vcont_probe (rs); |
44eaed12 | 4816 | |
4082afcc | 4817 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 4818 | return 0; |
44eaed12 | 4819 | |
82f73884 PA |
4820 | p = rs->buf; |
4821 | endp = rs->buf + get_remote_packet_size (); | |
4822 | ||
506fb367 DJ |
4823 | /* If we could generate a wider range of packets, we'd have to worry |
4824 | about overflowing BUF. Should there be a generic | |
4825 | "multi-part-packet" packet? */ | |
4826 | ||
0d8f58ca PA |
4827 | p += xsnprintf (p, endp - p, "vCont"); |
4828 | ||
79d7f229 | 4829 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4830 | { |
79d7f229 PA |
4831 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4832 | so we don't have any TID numbers the inferior will | |
4833 | understand. Make sure to only send forms that do not specify | |
4834 | a TID. */ | |
a9cbf802 | 4835 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4836 | } |
0d8f58ca | 4837 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4838 | { |
0d8f58ca PA |
4839 | /* Resume all threads (of all processes, or of a single |
4840 | process), with preference for INFERIOR_PTID. This assumes | |
4841 | inferior_ptid belongs to the set of all threads we are about | |
4842 | to resume. */ | |
a493e3e2 | 4843 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4844 | { |
0d8f58ca PA |
4845 | /* Step inferior_ptid, with or without signal. */ |
4846 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4847 | } |
0d8f58ca | 4848 | |
e5ef252a PA |
4849 | /* Also pass down any pending signaled resumption for other |
4850 | threads not the current. */ | |
4851 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4852 | ||
0d8f58ca | 4853 | /* And continue others without a signal. */ |
a493e3e2 | 4854 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4855 | } |
4856 | else | |
506fb367 DJ |
4857 | { |
4858 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4859 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4860 | } |
c906108c | 4861 | |
82f73884 PA |
4862 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4863 | putpkt (rs->buf); | |
506fb367 | 4864 | |
74531fed PA |
4865 | if (non_stop) |
4866 | { | |
4867 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4868 | reply will be reported asynchronously by means of a `%Stop' | |
4869 | notification. */ | |
4870 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4871 | if (strcmp (rs->buf, "OK") != 0) | |
4872 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4873 | } | |
4874 | ||
506fb367 | 4875 | return 1; |
c906108c | 4876 | } |
43ff13b4 | 4877 | |
506fb367 DJ |
4878 | /* Tell the remote machine to resume. */ |
4879 | ||
43ff13b4 | 4880 | static void |
28439f5e | 4881 | remote_resume (struct target_ops *ops, |
2ea28649 | 4882 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4883 | { |
d01949b6 | 4884 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4885 | char *buf; |
43ff13b4 | 4886 | |
722247f1 YQ |
4887 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4888 | (explained in remote-notif.c:handle_notification) so | |
4889 | remote_notif_process is not called. We need find a place where | |
4890 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4891 | before resuming inferior, because inferior was stopped and no RSP | |
4892 | traffic at that moment. */ | |
4893 | if (!non_stop) | |
5965e028 | 4894 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4895 | |
b73be471 | 4896 | rs->last_sent_signal = siggnal; |
280ceea3 | 4897 | rs->last_sent_step = step; |
43ff13b4 | 4898 | |
506fb367 | 4899 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4900 | /* No reverse support (yet) for vCont. */ |
4901 | if (execution_direction != EXEC_REVERSE) | |
4902 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4903 | goto done; | |
506fb367 | 4904 | |
79d7f229 PA |
4905 | /* All other supported resume packets do use Hc, so set the continue |
4906 | thread. */ | |
4907 | if (ptid_equal (ptid, minus_one_ptid)) | |
4908 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4909 | else |
79d7f229 | 4910 | set_continue_thread (ptid); |
506fb367 | 4911 | |
2e9f7625 | 4912 | buf = rs->buf; |
b2175913 MS |
4913 | if (execution_direction == EXEC_REVERSE) |
4914 | { | |
4915 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4916 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4917 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4918 | siggnal); |
40ab02ce | 4919 | |
4082afcc | 4920 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 4921 | error (_("Remote reverse-step not supported.")); |
4082afcc | 4922 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 4923 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4924 | |
b2175913 MS |
4925 | strcpy (buf, step ? "bs" : "bc"); |
4926 | } | |
a493e3e2 | 4927 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4928 | { |
4929 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4930 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4931 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4932 | buf[3] = '\0'; |
4933 | } | |
4934 | else | |
c5aa993b | 4935 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4936 | |
44eaed12 | 4937 | putpkt (buf); |
43ff13b4 | 4938 | |
75c99385 | 4939 | done: |
2acceee2 | 4940 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4941 | with the event loop. NOTE: this is the one place where all the |
4942 | execution commands end up. We could alternatively do this in each | |
23860348 | 4943 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4944 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4945 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4946 | NOT asynchronously. */ |
362646f5 | 4947 | if (target_can_async_p ()) |
6a3753b3 | 4948 | target_async (1); |
e24a49d8 PA |
4949 | |
4950 | /* We've just told the target to resume. The remote server will | |
4951 | wait for the inferior to stop, and then send a stop reply. In | |
4952 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4953 | because the stub wouldn't be ready to process it. This applies |
4954 | only to the base all-stop protocol, however. In non-stop (which | |
4955 | only supports vCont), the stub replies with an "OK", and is | |
4956 | immediate able to process further serial input. */ | |
4957 | if (!non_stop) | |
4958 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4959 | } |
c906108c | 4960 | \f |
43ff13b4 JM |
4961 | |
4962 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4963 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4964 | static void |
934b9bac | 4965 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 4966 | { |
934b9bac | 4967 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
4968 | } |
4969 | ||
23860348 | 4970 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4971 | static void |
934b9bac | 4972 | async_handle_remote_sigint (int sig) |
43ff13b4 | 4973 | { |
934b9bac | 4974 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
4975 | /* Note we need to go through gdb_call_async_signal_handler in order |
4976 | to wake up the event loop on Windows. */ | |
4977 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
4978 | } |
4979 | ||
4980 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4981 | sent once. It will take effect the second time that the user sends | |
23860348 | 4982 | a ^C. */ |
43ff13b4 | 4983 | static void |
934b9bac | 4984 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 4985 | { |
934b9bac | 4986 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
4987 | /* See note in async_handle_remote_sigint. */ |
4988 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
4989 | } |
4990 | ||
6426a772 | 4991 | /* Perform the real interruption of the target execution, in response |
23860348 | 4992 | to a ^C. */ |
c5aa993b | 4993 | static void |
fba45db2 | 4994 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4995 | { |
4996 | if (remote_debug) | |
248fd3bf | 4997 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4998 | |
94cc34af | 4999 | target_stop (inferior_ptid); |
43ff13b4 JM |
5000 | } |
5001 | ||
0df8b418 | 5002 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5003 | up on the target alltogether. */ |
47e1ce27 | 5004 | static void |
fba45db2 | 5005 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5006 | { |
2df3850c | 5007 | if (remote_debug) |
248fd3bf | 5008 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5009 | |
5010 | interrupt_query (); | |
43ff13b4 JM |
5011 | } |
5012 | ||
5013 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5014 | stopped. */ |
6426a772 | 5015 | static void |
934b9bac | 5016 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5017 | { |
5018 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5019 | } |
5020 | ||
c906108c SS |
5021 | /* Send ^C to target to halt it. Target will respond, and send us a |
5022 | packet. */ | |
507f3c78 | 5023 | static void (*ofunc) (int); |
c906108c | 5024 | |
0df8b418 MS |
5025 | /* The command line interface's stop routine. This function is installed |
5026 | as a signal handler for SIGINT. The first time a user requests a | |
5027 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5028 | response from the target (it didn't stop when the user requested it), |
23860348 | 5029 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5030 | static void |
934b9bac | 5031 | sync_remote_interrupt (int signo) |
c906108c | 5032 | { |
23860348 | 5033 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5034 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5035 | |
934b9bac | 5036 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5037 | } |
5038 | ||
5039 | /* The user typed ^C twice. */ | |
5040 | ||
5041 | static void | |
934b9bac | 5042 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5043 | { |
5044 | signal (signo, ofunc); | |
934b9bac JK |
5045 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5046 | signal (signo, sync_remote_interrupt); | |
c906108c | 5047 | } |
7a292a7a | 5048 | |
74531fed PA |
5049 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5050 | thread, all threads of a remote process, or all threads of all | |
5051 | processes. */ | |
5052 | ||
5053 | static void | |
5054 | remote_stop_ns (ptid_t ptid) | |
5055 | { | |
5056 | struct remote_state *rs = get_remote_state (); | |
5057 | char *p = rs->buf; | |
5058 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5059 | |
4082afcc | 5060 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5061 | remote_vcont_probe (rs); |
5062 | ||
d458bd84 | 5063 | if (!rs->supports_vCont.t) |
74531fed PA |
5064 | error (_("Remote server does not support stopping threads")); |
5065 | ||
f91d3df5 PA |
5066 | if (ptid_equal (ptid, minus_one_ptid) |
5067 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5068 | p += xsnprintf (p, endp - p, "vCont;t"); |
5069 | else | |
5070 | { | |
5071 | ptid_t nptid; | |
5072 | ||
74531fed PA |
5073 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5074 | ||
5075 | if (ptid_is_pid (ptid)) | |
5076 | /* All (-1) threads of process. */ | |
ba348170 | 5077 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5078 | else |
5079 | { | |
5080 | /* Small optimization: if we already have a stop reply for | |
5081 | this thread, no use in telling the stub we want this | |
5082 | stopped. */ | |
5083 | if (peek_stop_reply (ptid)) | |
5084 | return; | |
5085 | ||
5086 | nptid = ptid; | |
5087 | } | |
5088 | ||
a9cbf802 | 5089 | write_ptid (p, endp, nptid); |
74531fed PA |
5090 | } |
5091 | ||
5092 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5093 | come in asynchronously by notification. */ | |
5094 | putpkt (rs->buf); | |
5095 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5096 | if (strcmp (rs->buf, "OK") != 0) | |
5097 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5098 | } | |
5099 | ||
5100 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5101 | remote target. It is undefined which thread of which process | |
5102 | reports the stop. */ | |
5103 | ||
5104 | static void | |
5105 | remote_stop_as (ptid_t ptid) | |
5106 | { | |
5107 | struct remote_state *rs = get_remote_state (); | |
5108 | ||
3a29589a DJ |
5109 | rs->ctrlc_pending_p = 1; |
5110 | ||
74531fed PA |
5111 | /* If the inferior is stopped already, but the core didn't know |
5112 | about it yet, just ignore the request. The cached wait status | |
5113 | will be collected in remote_wait. */ | |
5114 | if (rs->cached_wait_status) | |
5115 | return; | |
5116 | ||
9a7071a8 JB |
5117 | /* Send interrupt_sequence to remote target. */ |
5118 | send_interrupt_sequence (); | |
74531fed PA |
5119 | } |
5120 | ||
0df8b418 | 5121 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5122 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5123 | will eventually end up here. */ |
74531fed | 5124 | |
c906108c | 5125 | static void |
1eab8a48 | 5126 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5127 | { |
7a292a7a | 5128 | if (remote_debug) |
0f71a2f6 | 5129 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5130 | |
74531fed PA |
5131 | if (non_stop) |
5132 | remote_stop_ns (ptid); | |
c906108c | 5133 | else |
74531fed | 5134 | remote_stop_as (ptid); |
c906108c SS |
5135 | } |
5136 | ||
5137 | /* Ask the user what to do when an interrupt is received. */ | |
5138 | ||
5139 | static void | |
fba45db2 | 5140 | interrupt_query (void) |
c906108c SS |
5141 | { |
5142 | target_terminal_ours (); | |
5143 | ||
d9d41e78 | 5144 | if (target_is_async_p ()) |
c906108c | 5145 | { |
74531fed | 5146 | signal (SIGINT, handle_sigint); |
039e3c22 | 5147 | quit (); |
c906108c | 5148 | } |
74531fed PA |
5149 | else |
5150 | { | |
9e2f0ad4 HZ |
5151 | if (query (_("Interrupted while waiting for the program.\n\ |
5152 | Give up (and stop debugging it)? "))) | |
74531fed | 5153 | { |
78a095c3 | 5154 | remote_unpush_target (); |
039e3c22 | 5155 | quit (); |
74531fed PA |
5156 | } |
5157 | } | |
c906108c SS |
5158 | |
5159 | target_terminal_inferior (); | |
5160 | } | |
5161 | ||
6426a772 JM |
5162 | /* Enable/disable target terminal ownership. Most targets can use |
5163 | terminal groups to control terminal ownership. Remote targets are | |
5164 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5165 | is required. */ |
6426a772 JM |
5166 | |
5167 | static void | |
d2f640d4 | 5168 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5169 | { |
c6ebd6cf | 5170 | if (!target_async_permitted) |
75c99385 PA |
5171 | /* Nothing to do. */ |
5172 | return; | |
5173 | ||
d9d2d8b6 PA |
5174 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5175 | idempotent. The event-loop GDB talking to an asynchronous target | |
5176 | with a synchronous command calls this function from both | |
5177 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5178 | transfer the terminal to the target when it shouldn't this guard | |
5179 | can go away. */ | |
6426a772 JM |
5180 | if (!remote_async_terminal_ours_p) |
5181 | return; | |
5182 | delete_file_handler (input_fd); | |
5183 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5184 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5185 | /* NOTE: At this point we could also register our selves as the |
5186 | recipient of all input. Any characters typed could then be | |
23860348 | 5187 | passed on down to the target. */ |
6426a772 JM |
5188 | } |
5189 | ||
5190 | static void | |
e3594fd1 | 5191 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5192 | { |
c6ebd6cf | 5193 | if (!target_async_permitted) |
75c99385 PA |
5194 | /* Nothing to do. */ |
5195 | return; | |
5196 | ||
5197 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5198 | if (remote_async_terminal_ours_p) |
5199 | return; | |
934b9bac | 5200 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5201 | add_file_handler (input_fd, stdin_event_handler, 0); |
5202 | remote_async_terminal_ours_p = 1; | |
5203 | } | |
5204 | ||
176a6961 | 5205 | static void |
917317f4 | 5206 | remote_console_output (char *msg) |
c906108c SS |
5207 | { |
5208 | char *p; | |
5209 | ||
c5aa993b | 5210 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5211 | { |
5212 | char tb[2]; | |
5213 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5214 | |
c906108c SS |
5215 | tb[0] = c; |
5216 | tb[1] = 0; | |
43ff13b4 | 5217 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5218 | } |
00db5b94 PA |
5219 | gdb_flush (gdb_stdtarg); |
5220 | } | |
74531fed PA |
5221 | |
5222 | typedef struct cached_reg | |
5223 | { | |
5224 | int num; | |
5225 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5226 | } cached_reg_t; | |
5227 | ||
5228 | DEF_VEC_O(cached_reg_t); | |
5229 | ||
722247f1 | 5230 | typedef struct stop_reply |
74531fed | 5231 | { |
722247f1 | 5232 | struct notif_event base; |
74531fed | 5233 | |
722247f1 | 5234 | /* The identifier of the thread about this event */ |
74531fed PA |
5235 | ptid_t ptid; |
5236 | ||
340e3c99 | 5237 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5238 | connection, represented by a remote_state object, is closed, |
5239 | all the associated stop_reply events should be released. */ | |
5240 | struct remote_state *rs; | |
5241 | ||
74531fed PA |
5242 | struct target_waitstatus ws; |
5243 | ||
15148d6a PA |
5244 | /* Expedited registers. This makes remote debugging a bit more |
5245 | efficient for those targets that provide critical registers as | |
5246 | part of their normal status mechanism (as another roundtrip to | |
5247 | fetch them is avoided). */ | |
74531fed PA |
5248 | VEC(cached_reg_t) *regcache; |
5249 | ||
f7e6eed5 PA |
5250 | enum target_stop_reason stop_reason; |
5251 | ||
74531fed PA |
5252 | CORE_ADDR watch_data_address; |
5253 | ||
dc146f7c | 5254 | int core; |
722247f1 | 5255 | } *stop_reply_p; |
a744cf53 | 5256 | |
722247f1 YQ |
5257 | DECLARE_QUEUE_P (stop_reply_p); |
5258 | DEFINE_QUEUE_P (stop_reply_p); | |
5259 | /* The list of already fetched and acknowledged stop events. This | |
5260 | queue is used for notification Stop, and other notifications | |
5261 | don't need queue for their events, because the notification events | |
5262 | of Stop can't be consumed immediately, so that events should be | |
5263 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5264 | time. Other notifications can consume their events immediately, | |
5265 | so queue is not needed for them. */ | |
5266 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5267 | |
5268 | static void | |
5269 | stop_reply_xfree (struct stop_reply *r) | |
5270 | { | |
f48ff2a7 | 5271 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5272 | } |
5273 | ||
722247f1 YQ |
5274 | static void |
5275 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5276 | struct notif_event *event) | |
5277 | { | |
5278 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5279 | } | |
5280 | ||
5281 | static void | |
5282 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5283 | struct notif_event *event) | |
5284 | { | |
5285 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5286 | ||
5287 | /* acknowledge */ | |
5288 | putpkt ((char *) self->ack_command); | |
5289 | ||
5290 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5291 | /* We got an unknown stop reply. */ | |
5292 | error (_("Unknown stop reply")); | |
5293 | ||
5294 | push_stop_reply (stop_reply); | |
5295 | } | |
5296 | ||
5297 | static int | |
5298 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5299 | { | |
5300 | /* We can't get pending events in remote_notif_process for | |
5301 | notification stop, and we have to do this in remote_wait_ns | |
5302 | instead. If we fetch all queued events from stub, remote stub | |
5303 | may exit and we have no chance to process them back in | |
5304 | remote_wait_ns. */ | |
5305 | mark_async_event_handler (remote_async_inferior_event_token); | |
5306 | return 0; | |
5307 | } | |
5308 | ||
5309 | static void | |
5310 | stop_reply_dtr (struct notif_event *event) | |
5311 | { | |
5312 | struct stop_reply *r = (struct stop_reply *) event; | |
5313 | ||
5314 | VEC_free (cached_reg_t, r->regcache); | |
5315 | } | |
5316 | ||
5317 | static struct notif_event * | |
5318 | remote_notif_stop_alloc_reply (void) | |
5319 | { | |
5320 | struct notif_event *r | |
70ba0933 | 5321 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5322 | |
5323 | r->dtr = stop_reply_dtr; | |
5324 | ||
5325 | return r; | |
5326 | } | |
5327 | ||
5328 | /* A client of notification Stop. */ | |
5329 | ||
5330 | struct notif_client notif_client_stop = | |
5331 | { | |
5332 | "Stop", | |
5333 | "vStopped", | |
5334 | remote_notif_stop_parse, | |
5335 | remote_notif_stop_ack, | |
5336 | remote_notif_stop_can_get_pending_events, | |
5337 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5338 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5339 | }; |
5340 | ||
5341 | /* A parameter to pass data in and out. */ | |
5342 | ||
5343 | struct queue_iter_param | |
5344 | { | |
5345 | void *input; | |
5346 | struct stop_reply *output; | |
5347 | }; | |
5348 | ||
f48ff2a7 YQ |
5349 | /* Remove stop replies in the queue if its pid is equal to the given |
5350 | inferior's pid. */ | |
722247f1 YQ |
5351 | |
5352 | static int | |
f48ff2a7 YQ |
5353 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5354 | QUEUE_ITER (stop_reply_p) *iter, | |
5355 | stop_reply_p event, | |
5356 | void *data) | |
722247f1 YQ |
5357 | { |
5358 | struct queue_iter_param *param = data; | |
5359 | struct inferior *inf = param->input; | |
5360 | ||
f48ff2a7 | 5361 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5362 | { |
5363 | stop_reply_xfree (event); | |
5364 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5365 | } | |
5366 | ||
5367 | return 1; | |
5368 | } | |
5369 | ||
f48ff2a7 | 5370 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5371 | |
74531fed | 5372 | static void |
5f4cf0bb | 5373 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5374 | { |
722247f1 YQ |
5375 | int i; |
5376 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5377 | struct stop_reply *reply; |
5378 | struct remote_state *rs = get_remote_state (); | |
5379 | struct remote_notif_state *rns = rs->notif_state; | |
5380 | ||
5381 | /* This function can be notified when an inferior exists. When the | |
5382 | target is not remote, the notification state is NULL. */ | |
5383 | if (rs->remote_desc == NULL) | |
5384 | return; | |
5385 | ||
5386 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5387 | |
74531fed | 5388 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5389 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5390 | { |
722247f1 | 5391 | stop_reply_xfree (reply); |
f48ff2a7 | 5392 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5393 | } |
c906108c | 5394 | |
722247f1 YQ |
5395 | param.input = inf; |
5396 | param.output = NULL; | |
74531fed PA |
5397 | /* Discard the stop replies we have already pulled with |
5398 | vStopped. */ | |
722247f1 | 5399 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5400 | remove_stop_reply_for_inferior, ¶m); |
5401 | } | |
5402 | ||
bcc75809 YQ |
5403 | /* If its remote state is equal to the given remote state, |
5404 | remove EVENT from the stop reply queue. */ | |
5405 | ||
5406 | static int | |
5407 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5408 | QUEUE_ITER (stop_reply_p) *iter, | |
5409 | stop_reply_p event, | |
5410 | void *data) | |
5411 | { | |
5412 | struct queue_iter_param *param = data; | |
5413 | struct remote_state *rs = param->input; | |
5414 | ||
5415 | if (event->rs == rs) | |
5416 | { | |
5417 | stop_reply_xfree (event); | |
5418 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5419 | } | |
5420 | ||
5421 | return 1; | |
5422 | } | |
5423 | ||
5424 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5425 | |
5426 | static void | |
bcc75809 | 5427 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5428 | { |
5429 | struct queue_iter_param param; | |
5430 | ||
bcc75809 | 5431 | param.input = rs; |
f48ff2a7 YQ |
5432 | param.output = NULL; |
5433 | /* Discard the stop replies we have already pulled with | |
5434 | vStopped. */ | |
5435 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5436 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5437 | } |
74531fed | 5438 | |
722247f1 YQ |
5439 | /* A parameter to pass data in and out. */ |
5440 | ||
5441 | static int | |
5442 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5443 | QUEUE_ITER (stop_reply_p) *iter, | |
5444 | stop_reply_p event, | |
5445 | void *data) | |
5446 | { | |
5447 | struct queue_iter_param *param = data; | |
5448 | ptid_t *ptid = param->input; | |
5449 | ||
5450 | if (ptid_match (event->ptid, *ptid)) | |
5451 | { | |
5452 | param->output = event; | |
5453 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5454 | return 0; | |
c8e38a49 | 5455 | } |
722247f1 YQ |
5456 | |
5457 | return 1; | |
74531fed | 5458 | } |
43ff13b4 | 5459 | |
722247f1 YQ |
5460 | /* Remove the first reply in 'stop_reply_queue' which matches |
5461 | PTID. */ | |
2e9f7625 | 5462 | |
722247f1 YQ |
5463 | static struct stop_reply * |
5464 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5465 | { |
722247f1 YQ |
5466 | struct queue_iter_param param; |
5467 | ||
5468 | param.input = &ptid; | |
5469 | param.output = NULL; | |
5470 | ||
5471 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5472 | remote_notif_remove_once_on_match, ¶m); | |
5473 | if (notif_debug) | |
5474 | fprintf_unfiltered (gdb_stdlog, | |
5475 | "notif: discard queued event: 'Stop' in %s\n", | |
5476 | target_pid_to_str (ptid)); | |
a744cf53 | 5477 | |
722247f1 | 5478 | return param.output; |
74531fed | 5479 | } |
75c99385 | 5480 | |
74531fed PA |
5481 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5482 | remove it from the queue, and return it. Returns NULL if none is | |
5483 | found. If there are still queued events left to process, tell the | |
5484 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5485 | |
74531fed PA |
5486 | static struct stop_reply * |
5487 | queued_stop_reply (ptid_t ptid) | |
5488 | { | |
722247f1 | 5489 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5490 | |
722247f1 | 5491 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5492 | /* There's still at least an event left. */ |
5493 | mark_async_event_handler (remote_async_inferior_event_token); | |
5494 | ||
722247f1 | 5495 | return r; |
74531fed PA |
5496 | } |
5497 | ||
5498 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5499 | know that we now have at least one queued event left to pass to the | |
5500 | core side, tell the event loop to get back to target_wait soon. */ | |
5501 | ||
5502 | static void | |
5503 | push_stop_reply (struct stop_reply *new_event) | |
5504 | { | |
722247f1 | 5505 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5506 | |
722247f1 YQ |
5507 | if (notif_debug) |
5508 | fprintf_unfiltered (gdb_stdlog, | |
5509 | "notif: push 'Stop' %s to queue %d\n", | |
5510 | target_pid_to_str (new_event->ptid), | |
5511 | QUEUE_length (stop_reply_p, | |
5512 | stop_reply_queue)); | |
74531fed PA |
5513 | |
5514 | mark_async_event_handler (remote_async_inferior_event_token); | |
5515 | } | |
5516 | ||
722247f1 YQ |
5517 | static int |
5518 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5519 | QUEUE_ITER (stop_reply_p) *iter, | |
5520 | struct stop_reply *event, | |
5521 | void *data) | |
5522 | { | |
5523 | ptid_t *ptid = data; | |
5524 | ||
5525 | return !(ptid_equal (*ptid, event->ptid) | |
5526 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5527 | } | |
5528 | ||
74531fed PA |
5529 | /* Returns true if we have a stop reply for PTID. */ |
5530 | ||
5531 | static int | |
5532 | peek_stop_reply (ptid_t ptid) | |
5533 | { | |
722247f1 YQ |
5534 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5535 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5536 | } |
5537 | ||
1f10ba14 PA |
5538 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5539 | ||
5540 | static char * | |
5541 | skip_to_semicolon (char *p) | |
5542 | { | |
5543 | while (*p != '\0' && *p != ';') | |
5544 | p++; | |
5545 | return p; | |
5546 | } | |
5547 | ||
74531fed PA |
5548 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5549 | result is stored in EVENT, or throws an error. */ | |
5550 | ||
5551 | static void | |
5552 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5553 | { | |
5554 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5555 | ULONGEST addr; | |
5556 | char *p; | |
5557 | ||
5558 | event->ptid = null_ptid; | |
bcc75809 | 5559 | event->rs = get_remote_state (); |
74531fed PA |
5560 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5561 | event->ws.value.integer = 0; | |
f7e6eed5 | 5562 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 5563 | event->regcache = NULL; |
dc146f7c | 5564 | event->core = -1; |
74531fed PA |
5565 | |
5566 | switch (buf[0]) | |
5567 | { | |
5568 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5569 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5570 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5571 | ss = signal number | |
5572 | n... = register number | |
5573 | r... = register contents | |
5574 | */ | |
5575 | ||
5576 | p = &buf[3]; /* after Txx */ | |
5577 | while (*p) | |
5578 | { | |
5579 | char *p1; | |
cea39f65 | 5580 | int fieldsize; |
43ff13b4 | 5581 | |
1f10ba14 PA |
5582 | p1 = strchr (p, ':'); |
5583 | if (p1 == NULL) | |
5584 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
5585 | Packet: '%s'\n"), | |
5586 | p, buf); | |
5587 | if (p == p1) | |
5588 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
5589 | Packet: '%s'\n"), | |
5590 | p, buf); | |
3c3bea1c | 5591 | |
1f10ba14 PA |
5592 | /* Some "registers" are actually extended stop information. |
5593 | Note if you're adding a new entry here: GDB 7.9 and | |
5594 | earlier assume that all register "numbers" that start | |
5595 | with an hex digit are real register numbers. Make sure | |
5596 | the server only sends such a packet if it knows the | |
5597 | client understands it. */ | |
c8e38a49 | 5598 | |
1f10ba14 PA |
5599 | if (strncmp (p, "thread", p1 - p) == 0) |
5600 | event->ptid = read_ptid (++p1, &p); | |
5601 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5602 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5603 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
cea39f65 | 5604 | { |
f7e6eed5 | 5605 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
5606 | p = unpack_varlen_hex (++p1, &addr); |
5607 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 5608 | } |
f7e6eed5 PA |
5609 | else if (strncmp (p, "swbreak", p1 - p) == 0) |
5610 | { | |
5611 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
5612 | ||
5613 | /* Make sure the stub doesn't forget to indicate support | |
5614 | with qSupported. */ | |
5615 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
5616 | error (_("Unexpected swbreak stop reason")); | |
5617 | ||
5618 | /* The value part is documented as "must be empty", | |
5619 | though we ignore it, in case we ever decide to make | |
5620 | use of it in a backward compatible way. */ | |
5621 | p = skip_to_semicolon (p1 + 1); | |
5622 | } | |
5623 | else if (strncmp (p, "hwbreak", p1 - p) == 0) | |
5624 | { | |
5625 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
5626 | ||
5627 | /* Make sure the stub doesn't forget to indicate support | |
5628 | with qSupported. */ | |
5629 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
5630 | error (_("Unexpected hwbreak stop reason")); | |
5631 | ||
5632 | /* See above. */ | |
5633 | p = skip_to_semicolon (p1 + 1); | |
5634 | } | |
1f10ba14 | 5635 | else if (strncmp (p, "library", p1 - p) == 0) |
cea39f65 | 5636 | { |
1f10ba14 PA |
5637 | event->ws.kind = TARGET_WAITKIND_LOADED; |
5638 | p = skip_to_semicolon (p1 + 1); | |
5639 | } | |
5640 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5641 | { | |
5642 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
5643 | /* p1 will indicate "begin" or "end", but it makes | |
5644 | no difference for now, so ignore it. */ | |
5645 | p = skip_to_semicolon (p1 + 1); | |
5646 | } | |
5647 | else if (strncmp (p, "core", p1 - p) == 0) | |
5648 | { | |
5649 | ULONGEST c; | |
a744cf53 | 5650 | |
1f10ba14 PA |
5651 | p = unpack_varlen_hex (++p1, &c); |
5652 | event->core = c; | |
cea39f65 MS |
5653 | } |
5654 | else | |
5655 | { | |
1f10ba14 PA |
5656 | ULONGEST pnum; |
5657 | char *p_temp; | |
5658 | ||
5659 | /* Maybe a real ``P'' register number. */ | |
5660 | p_temp = unpack_varlen_hex (p, &pnum); | |
5661 | /* If the first invalid character is the colon, we got a | |
5662 | register number. Otherwise, it's an unknown stop | |
5663 | reason. */ | |
5664 | if (p_temp == p1) | |
5665 | { | |
5666 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5667 | cached_reg_t cached_reg; | |
43ff13b4 | 5668 | |
1f10ba14 PA |
5669 | if (reg == NULL) |
5670 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5671 | Packet: '%s'\n"), |
1f10ba14 | 5672 | hex_string (pnum), p, buf); |
c8e38a49 | 5673 | |
1f10ba14 | 5674 | cached_reg.num = reg->regnum; |
4100683b | 5675 | |
1f10ba14 PA |
5676 | p = p1 + 1; |
5677 | fieldsize = hex2bin (p, cached_reg.data, | |
5678 | register_size (target_gdbarch (), | |
5679 | reg->regnum)); | |
5680 | p += 2 * fieldsize; | |
5681 | if (fieldsize < register_size (target_gdbarch (), | |
5682 | reg->regnum)) | |
5683 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5684 | |
1f10ba14 PA |
5685 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5686 | } | |
5687 | else | |
5688 | { | |
5689 | /* Not a number. Silently skip unknown optional | |
5690 | info. */ | |
5691 | p = skip_to_semicolon (p1 + 1); | |
5692 | } | |
cea39f65 | 5693 | } |
c8e38a49 | 5694 | |
cea39f65 MS |
5695 | if (*p != ';') |
5696 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5697 | buf, p); | |
5698 | ++p; | |
5699 | } | |
5b5596ff PA |
5700 | |
5701 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5702 | break; | |
5703 | ||
c8e38a49 PA |
5704 | /* fall through */ |
5705 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5706 | { |
5707 | int sig; | |
5708 | ||
5709 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5710 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5711 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5712 | event->ws.value.sig = (enum gdb_signal) sig; | |
5713 | else | |
5714 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5715 | } | |
c8e38a49 PA |
5716 | break; |
5717 | case 'W': /* Target exited. */ | |
5718 | case 'X': | |
5719 | { | |
5720 | char *p; | |
5721 | int pid; | |
5722 | ULONGEST value; | |
82f73884 | 5723 | |
c8e38a49 PA |
5724 | /* GDB used to accept only 2 hex chars here. Stubs should |
5725 | only send more if they detect GDB supports multi-process | |
5726 | support. */ | |
5727 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5728 | |
c8e38a49 PA |
5729 | if (buf[0] == 'W') |
5730 | { | |
5731 | /* The remote process exited. */ | |
74531fed PA |
5732 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5733 | event->ws.value.integer = value; | |
c8e38a49 PA |
5734 | } |
5735 | else | |
5736 | { | |
5737 | /* The remote process exited with a signal. */ | |
74531fed | 5738 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5739 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5740 | event->ws.value.sig = (enum gdb_signal) value; | |
5741 | else | |
5742 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5743 | } |
82f73884 | 5744 | |
c8e38a49 PA |
5745 | /* If no process is specified, assume inferior_ptid. */ |
5746 | pid = ptid_get_pid (inferior_ptid); | |
5747 | if (*p == '\0') | |
5748 | ; | |
5749 | else if (*p == ';') | |
5750 | { | |
5751 | p++; | |
5752 | ||
0b24eb2d | 5753 | if (*p == '\0') |
82f73884 | 5754 | ; |
61012eef | 5755 | else if (startswith (p, "process:")) |
82f73884 | 5756 | { |
c8e38a49 | 5757 | ULONGEST upid; |
a744cf53 | 5758 | |
c8e38a49 PA |
5759 | p += sizeof ("process:") - 1; |
5760 | unpack_varlen_hex (p, &upid); | |
5761 | pid = upid; | |
82f73884 PA |
5762 | } |
5763 | else | |
5764 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5765 | } |
c8e38a49 PA |
5766 | else |
5767 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5768 | event->ptid = pid_to_ptid (pid); |
5769 | } | |
5770 | break; | |
5771 | } | |
5772 | ||
5773 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5774 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5775 | } | |
5776 | ||
722247f1 YQ |
5777 | /* When the stub wants to tell GDB about a new notification reply, it |
5778 | sends a notification (%Stop, for example). Those can come it at | |
5779 | any time, hence, we have to make sure that any pending | |
5780 | putpkt/getpkt sequence we're making is finished, before querying | |
5781 | the stub for more events with the corresponding ack command | |
5782 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5783 | immediately upon receiving the notification, something like this | |
5784 | could happen: | |
74531fed PA |
5785 | |
5786 | 1.1) --> Hg 1 | |
5787 | 1.2) <-- OK | |
5788 | 1.3) --> g | |
5789 | 1.4) <-- %Stop | |
5790 | 1.5) --> vStopped | |
5791 | 1.6) <-- (registers reply to step #1.3) | |
5792 | ||
5793 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5794 | query. | |
5795 | ||
796cb314 | 5796 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5797 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5798 | doing whatever we were doing: | |
5799 | ||
5800 | 2.1) --> Hg 1 | |
5801 | 2.2) <-- OK | |
5802 | 2.3) --> g | |
5803 | 2.4) <-- %Stop | |
5804 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5805 | 2.5) <-- (registers reply to step #2.3) | |
5806 | ||
5807 | Eventualy after step #2.5, we return to the event loop, which | |
5808 | notices there's an event on the | |
5809 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5810 | associated callback --- the function below. At this point, we're | |
5811 | always safe to start a vStopped sequence. : | |
5812 | ||
5813 | 2.6) --> vStopped | |
5814 | 2.7) <-- T05 thread:2 | |
5815 | 2.8) --> vStopped | |
5816 | 2.9) --> OK | |
5817 | */ | |
5818 | ||
722247f1 YQ |
5819 | void |
5820 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5821 | { |
5822 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5823 | |
f48ff2a7 | 5824 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5825 | { |
722247f1 YQ |
5826 | if (notif_debug) |
5827 | fprintf_unfiltered (gdb_stdlog, | |
5828 | "notif: process: '%s' ack pending event\n", | |
5829 | nc->name); | |
74531fed | 5830 | |
722247f1 | 5831 | /* acknowledge */ |
f48ff2a7 YQ |
5832 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5833 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5834 | |
5835 | while (1) | |
5836 | { | |
5837 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5838 | if (strcmp (rs->buf, "OK") == 0) | |
5839 | break; | |
5840 | else | |
722247f1 | 5841 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5842 | } |
5843 | } | |
722247f1 YQ |
5844 | else |
5845 | { | |
5846 | if (notif_debug) | |
5847 | fprintf_unfiltered (gdb_stdlog, | |
5848 | "notif: process: '%s' no pending reply\n", | |
5849 | nc->name); | |
5850 | } | |
74531fed PA |
5851 | } |
5852 | ||
74531fed PA |
5853 | /* Called when it is decided that STOP_REPLY holds the info of the |
5854 | event that is to be returned to the core. This function always | |
5855 | destroys STOP_REPLY. */ | |
5856 | ||
5857 | static ptid_t | |
5858 | process_stop_reply (struct stop_reply *stop_reply, | |
5859 | struct target_waitstatus *status) | |
5860 | { | |
5861 | ptid_t ptid; | |
5862 | ||
5863 | *status = stop_reply->ws; | |
5864 | ptid = stop_reply->ptid; | |
5865 | ||
5866 | /* If no thread/process was reported by the stub, assume the current | |
5867 | inferior. */ | |
5868 | if (ptid_equal (ptid, null_ptid)) | |
5869 | ptid = inferior_ptid; | |
5870 | ||
5f3563ea PA |
5871 | if (status->kind != TARGET_WAITKIND_EXITED |
5872 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5873 | { |
ee154bee TT |
5874 | struct remote_state *rs = get_remote_state (); |
5875 | ||
5f3563ea PA |
5876 | /* Expedited registers. */ |
5877 | if (stop_reply->regcache) | |
5878 | { | |
217f1f79 | 5879 | struct regcache *regcache |
f5656ead | 5880 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5881 | cached_reg_t *reg; |
5882 | int ix; | |
5883 | ||
5884 | for (ix = 0; | |
5885 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5886 | ix++) | |
217f1f79 | 5887 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5888 | VEC_free (cached_reg_t, stop_reply->regcache); |
5889 | } | |
74531fed | 5890 | |
f7e6eed5 | 5891 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 5892 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
5893 | |
5894 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5895 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5896 | } |
5897 | ||
74531fed PA |
5898 | stop_reply_xfree (stop_reply); |
5899 | return ptid; | |
5900 | } | |
5901 | ||
5902 | /* The non-stop mode version of target_wait. */ | |
5903 | ||
5904 | static ptid_t | |
47608cb1 | 5905 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5906 | { |
5907 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5908 | struct stop_reply *stop_reply; |
5909 | int ret; | |
fee9eda9 | 5910 | int is_notif = 0; |
74531fed PA |
5911 | |
5912 | /* If in non-stop mode, get out of getpkt even if a | |
5913 | notification is received. */ | |
5914 | ||
5915 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5916 | 0 /* forever */, &is_notif); |
74531fed PA |
5917 | while (1) |
5918 | { | |
fee9eda9 | 5919 | if (ret != -1 && !is_notif) |
74531fed PA |
5920 | switch (rs->buf[0]) |
5921 | { | |
5922 | case 'E': /* Error of some sort. */ | |
5923 | /* We're out of sync with the target now. Did it continue | |
5924 | or not? We can't tell which thread it was in non-stop, | |
5925 | so just ignore this. */ | |
5926 | warning (_("Remote failure reply: %s"), rs->buf); | |
5927 | break; | |
5928 | case 'O': /* Console output. */ | |
5929 | remote_console_output (rs->buf + 1); | |
5930 | break; | |
5931 | default: | |
5932 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5933 | break; | |
5934 | } | |
5935 | ||
5936 | /* Acknowledge a pending stop reply that may have arrived in the | |
5937 | mean time. */ | |
f48ff2a7 | 5938 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 5939 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
5940 | |
5941 | /* If indeed we noticed a stop reply, we're done. */ | |
5942 | stop_reply = queued_stop_reply (ptid); | |
5943 | if (stop_reply != NULL) | |
5944 | return process_stop_reply (stop_reply, status); | |
5945 | ||
47608cb1 | 5946 | /* Still no event. If we're just polling for an event, then |
74531fed | 5947 | return to the event loop. */ |
47608cb1 | 5948 | if (options & TARGET_WNOHANG) |
74531fed PA |
5949 | { |
5950 | status->kind = TARGET_WAITKIND_IGNORE; | |
5951 | return minus_one_ptid; | |
5952 | } | |
5953 | ||
47608cb1 | 5954 | /* Otherwise do a blocking wait. */ |
74531fed | 5955 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5956 | 1 /* forever */, &is_notif); |
74531fed PA |
5957 | } |
5958 | } | |
5959 | ||
5960 | /* Wait until the remote machine stops, then return, storing status in | |
5961 | STATUS just as `wait' would. */ | |
5962 | ||
5963 | static ptid_t | |
47608cb1 | 5964 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5965 | { |
5966 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5967 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5968 | char *buf; |
74531fed PA |
5969 | struct stop_reply *stop_reply; |
5970 | ||
47608cb1 PA |
5971 | again: |
5972 | ||
74531fed PA |
5973 | status->kind = TARGET_WAITKIND_IGNORE; |
5974 | status->value.integer = 0; | |
5975 | ||
5976 | stop_reply = queued_stop_reply (ptid); | |
5977 | if (stop_reply != NULL) | |
5978 | return process_stop_reply (stop_reply, status); | |
5979 | ||
5980 | if (rs->cached_wait_status) | |
5981 | /* Use the cached wait status, but only once. */ | |
5982 | rs->cached_wait_status = 0; | |
5983 | else | |
5984 | { | |
5985 | int ret; | |
722247f1 | 5986 | int is_notif; |
74531fed PA |
5987 | |
5988 | if (!target_is_async_p ()) | |
5989 | { | |
934b9bac | 5990 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
5991 | /* If the user hit C-c before this packet, or between packets, |
5992 | pretend that it was hit right here. */ | |
522002f9 | 5993 | if (check_quit_flag ()) |
74531fed | 5994 | { |
522002f9 | 5995 | clear_quit_flag (); |
934b9bac | 5996 | sync_remote_interrupt (SIGINT); |
74531fed PA |
5997 | } |
5998 | } | |
5999 | ||
6000 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6001 | _never_ wait for ever -> test on target_is_async_p(). | |
6002 | However, before we do that we need to ensure that the caller | |
6003 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
6004 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
6005 | wait_forever_enabled_p, &is_notif); | |
6006 | ||
5e1b953b SDJ |
6007 | if (!target_is_async_p ()) |
6008 | signal (SIGINT, ofunc); | |
6009 | ||
722247f1 YQ |
6010 | /* GDB gets a notification. Return to core as this event is |
6011 | not interesting. */ | |
6012 | if (ret != -1 && is_notif) | |
6013 | return minus_one_ptid; | |
74531fed PA |
6014 | } |
6015 | ||
6016 | buf = rs->buf; | |
6017 | ||
f7e6eed5 | 6018 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6019 | |
6020 | /* We got something. */ | |
6021 | rs->waiting_for_stop_reply = 0; | |
6022 | ||
3a29589a DJ |
6023 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6024 | an 'F' or 'O' packet. */ | |
6025 | if (buf[0] != 'F' && buf[0] != 'O') | |
6026 | rs->ctrlc_pending_p = 0; | |
6027 | ||
74531fed PA |
6028 | switch (buf[0]) |
6029 | { | |
6030 | case 'E': /* Error of some sort. */ | |
6031 | /* We're out of sync with the target now. Did it continue or | |
6032 | not? Not is more likely, so report a stop. */ | |
6033 | warning (_("Remote failure reply: %s"), buf); | |
6034 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6035 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6036 | break; |
6037 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6038 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6039 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6040 | break; |
6041 | case 'T': case 'S': case 'X': case 'W': | |
6042 | { | |
722247f1 YQ |
6043 | struct stop_reply *stop_reply |
6044 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6045 | rs->buf); | |
74531fed | 6046 | |
74531fed | 6047 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6048 | break; |
6049 | } | |
6050 | case 'O': /* Console output. */ | |
6051 | remote_console_output (buf + 1); | |
e24a49d8 | 6052 | |
c8e38a49 PA |
6053 | /* The target didn't really stop; keep waiting. */ |
6054 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6055 | |
c8e38a49 PA |
6056 | break; |
6057 | case '\0': | |
b73be471 | 6058 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6059 | { |
6060 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6061 | remote system doesn't support it. */ | |
6062 | target_terminal_ours_for_output (); | |
6063 | printf_filtered | |
6064 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6065 | gdb_signal_to_name (rs->last_sent_signal)); |
6066 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6067 | target_terminal_inferior (); |
6068 | ||
280ceea3 | 6069 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6070 | putpkt ((char *) buf); |
6071 | ||
6072 | /* We just told the target to resume, so a stop reply is in | |
6073 | order. */ | |
e24a49d8 | 6074 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6075 | break; |
43ff13b4 | 6076 | } |
c8e38a49 PA |
6077 | /* else fallthrough */ |
6078 | default: | |
6079 | warning (_("Invalid remote reply: %s"), buf); | |
6080 | /* Keep waiting. */ | |
6081 | rs->waiting_for_stop_reply = 1; | |
6082 | break; | |
43ff13b4 | 6083 | } |
c8e38a49 | 6084 | |
c8e38a49 | 6085 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6086 | { |
6087 | /* Nothing interesting happened. If we're doing a non-blocking | |
6088 | poll, we're done. Otherwise, go back to waiting. */ | |
6089 | if (options & TARGET_WNOHANG) | |
6090 | return minus_one_ptid; | |
6091 | else | |
6092 | goto again; | |
6093 | } | |
74531fed PA |
6094 | else if (status->kind != TARGET_WAITKIND_EXITED |
6095 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6096 | { |
6097 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6098 | record_currthread (rs, event_ptid); |
82f73884 PA |
6099 | else |
6100 | event_ptid = inferior_ptid; | |
43ff13b4 | 6101 | } |
74531fed PA |
6102 | else |
6103 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6104 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6105 | |
82f73884 | 6106 | return event_ptid; |
43ff13b4 JM |
6107 | } |
6108 | ||
74531fed PA |
6109 | /* Wait until the remote machine stops, then return, storing status in |
6110 | STATUS just as `wait' would. */ | |
6111 | ||
c8e38a49 | 6112 | static ptid_t |
117de6a9 | 6113 | remote_wait (struct target_ops *ops, |
47608cb1 | 6114 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6115 | { |
6116 | ptid_t event_ptid; | |
6117 | ||
74531fed | 6118 | if (non_stop) |
47608cb1 | 6119 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6120 | else |
47608cb1 | 6121 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6122 | |
d9d41e78 | 6123 | if (target_is_async_p ()) |
c8e38a49 | 6124 | { |
74531fed PA |
6125 | /* If there are are events left in the queue tell the event loop |
6126 | to return here. */ | |
722247f1 | 6127 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6128 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6129 | } |
c8e38a49 PA |
6130 | |
6131 | return event_ptid; | |
6132 | } | |
6133 | ||
74ca34ce | 6134 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6135 | |
b96ec7ac | 6136 | static int |
56be3814 | 6137 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6138 | { |
6139 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6140 | char *buf, *p; |
b96ec7ac AC |
6141 | char regp[MAX_REGISTER_SIZE]; |
6142 | int i; | |
6143 | ||
4082afcc | 6144 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6145 | return 0; |
6146 | ||
6147 | if (reg->pnum == -1) | |
6148 | return 0; | |
6149 | ||
2e9f7625 | 6150 | p = rs->buf; |
fcad0fa4 | 6151 | *p++ = 'p'; |
74ca34ce | 6152 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6153 | *p++ = '\0'; |
1f4437a4 MS |
6154 | putpkt (rs->buf); |
6155 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6156 | |
2e9f7625 DJ |
6157 | buf = rs->buf; |
6158 | ||
74ca34ce DJ |
6159 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6160 | { | |
6161 | case PACKET_OK: | |
6162 | break; | |
6163 | case PACKET_UNKNOWN: | |
6164 | return 0; | |
6165 | case PACKET_ERROR: | |
27a9c0bf MS |
6166 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6167 | gdbarch_register_name (get_regcache_arch (regcache), | |
6168 | reg->regnum), | |
6169 | buf); | |
74ca34ce | 6170 | } |
3f9a994c JB |
6171 | |
6172 | /* If this register is unfetchable, tell the regcache. */ | |
6173 | if (buf[0] == 'x') | |
8480adf2 | 6174 | { |
56be3814 | 6175 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6176 | return 1; |
b96ec7ac | 6177 | } |
b96ec7ac | 6178 | |
3f9a994c JB |
6179 | /* Otherwise, parse and supply the value. */ |
6180 | p = buf; | |
6181 | i = 0; | |
6182 | while (p[0] != 0) | |
6183 | { | |
6184 | if (p[1] == 0) | |
74ca34ce | 6185 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6186 | |
6187 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6188 | p += 2; | |
6189 | } | |
56be3814 | 6190 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6191 | return 1; |
b96ec7ac AC |
6192 | } |
6193 | ||
74ca34ce DJ |
6194 | /* Fetch the registers included in the target's 'g' packet. */ |
6195 | ||
29709017 DJ |
6196 | static int |
6197 | send_g_packet (void) | |
c906108c | 6198 | { |
d01949b6 | 6199 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6200 | int buf_len; |
c906108c | 6201 | |
bba74b36 | 6202 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6203 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6204 | |
29709017 DJ |
6205 | /* We can get out of synch in various cases. If the first character |
6206 | in the buffer is not a hex character, assume that has happened | |
6207 | and try to fetch another packet to read. */ | |
6208 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6209 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6210 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6211 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6212 | { | |
6213 | if (remote_debug) | |
6214 | fprintf_unfiltered (gdb_stdlog, | |
6215 | "Bad register packet; fetching a new packet\n"); | |
6216 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6217 | } | |
6218 | ||
74ca34ce DJ |
6219 | buf_len = strlen (rs->buf); |
6220 | ||
6221 | /* Sanity check the received packet. */ | |
6222 | if (buf_len % 2 != 0) | |
6223 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6224 | |
6225 | return buf_len / 2; | |
6226 | } | |
6227 | ||
6228 | static void | |
56be3814 | 6229 | process_g_packet (struct regcache *regcache) |
29709017 | 6230 | { |
4a22f64d | 6231 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6232 | struct remote_state *rs = get_remote_state (); |
6233 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6234 | int i, buf_len; | |
6235 | char *p; | |
6236 | char *regs; | |
6237 | ||
6238 | buf_len = strlen (rs->buf); | |
6239 | ||
6240 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6241 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6242 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6243 | ||
6244 | /* Save the size of the packet sent to us by the target. It is used | |
6245 | as a heuristic when determining the max size of packets that the | |
6246 | target can safely receive. */ | |
6247 | if (rsa->actual_register_packet_size == 0) | |
6248 | rsa->actual_register_packet_size = buf_len; | |
6249 | ||
6250 | /* If this is smaller than we guessed the 'g' packet would be, | |
6251 | update our records. A 'g' reply that doesn't include a register's | |
6252 | value implies either that the register is not available, or that | |
6253 | the 'p' packet must be used. */ | |
6254 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6255 | { |
74ca34ce DJ |
6256 | rsa->sizeof_g_packet = buf_len / 2; |
6257 | ||
4a22f64d | 6258 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6259 | { |
74ca34ce DJ |
6260 | if (rsa->regs[i].pnum == -1) |
6261 | continue; | |
6262 | ||
6263 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6264 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6265 | else |
74ca34ce | 6266 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6267 | } |
74ca34ce | 6268 | } |
b323314b | 6269 | |
74ca34ce | 6270 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6271 | |
6272 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6273 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6274 | |
c906108c SS |
6275 | /* Reply describes registers byte by byte, each byte encoded as two |
6276 | hex characters. Suck them all up, then supply them to the | |
6277 | register cacheing/storage mechanism. */ | |
6278 | ||
74ca34ce | 6279 | p = rs->buf; |
ea9c271d | 6280 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6281 | { |
74ca34ce DJ |
6282 | if (p[0] == 0 || p[1] == 0) |
6283 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6284 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6285 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6286 | |
c906108c | 6287 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6288 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6289 | else |
6290 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6291 | p += 2; | |
6292 | } | |
6293 | ||
a744cf53 MS |
6294 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6295 | { | |
6296 | struct packet_reg *r = &rsa->regs[i]; | |
6297 | ||
6298 | if (r->in_g_packet) | |
6299 | { | |
6300 | if (r->offset * 2 >= strlen (rs->buf)) | |
6301 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6302 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6303 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6304 | else if (rs->buf[r->offset * 2] == 'x') |
6305 | { | |
6306 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6307 | /* The register isn't available, mark it as such (at | |
6308 | the same time setting the value to zero). */ | |
6309 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6310 | } | |
6311 | else | |
6312 | regcache_raw_supply (regcache, r->regnum, | |
6313 | regs + r->offset); | |
6314 | } | |
6315 | } | |
c906108c SS |
6316 | } |
6317 | ||
29709017 | 6318 | static void |
56be3814 | 6319 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6320 | { |
6321 | send_g_packet (); | |
56be3814 | 6322 | process_g_packet (regcache); |
29709017 DJ |
6323 | } |
6324 | ||
e6e4e701 PA |
6325 | /* Make the remote selected traceframe match GDB's selected |
6326 | traceframe. */ | |
6327 | ||
6328 | static void | |
6329 | set_remote_traceframe (void) | |
6330 | { | |
6331 | int newnum; | |
262e1174 | 6332 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6333 | |
262e1174 | 6334 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6335 | return; |
6336 | ||
6337 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6338 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6339 | |
6340 | newnum = target_trace_find (tfind_number, | |
6341 | get_traceframe_number (), 0, 0, NULL); | |
6342 | ||
6343 | /* Should not happen. If it does, all bets are off. */ | |
6344 | if (newnum != get_traceframe_number ()) | |
6345 | warning (_("could not set remote traceframe")); | |
6346 | } | |
6347 | ||
74ca34ce | 6348 | static void |
28439f5e PA |
6349 | remote_fetch_registers (struct target_ops *ops, |
6350 | struct regcache *regcache, int regnum) | |
74ca34ce | 6351 | { |
74ca34ce DJ |
6352 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6353 | int i; | |
6354 | ||
e6e4e701 | 6355 | set_remote_traceframe (); |
79d7f229 | 6356 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6357 | |
6358 | if (regnum >= 0) | |
6359 | { | |
6360 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6361 | |
74ca34ce DJ |
6362 | gdb_assert (reg != NULL); |
6363 | ||
6364 | /* If this register might be in the 'g' packet, try that first - | |
6365 | we are likely to read more than one register. If this is the | |
6366 | first 'g' packet, we might be overly optimistic about its | |
6367 | contents, so fall back to 'p'. */ | |
6368 | if (reg->in_g_packet) | |
6369 | { | |
56be3814 | 6370 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6371 | if (reg->in_g_packet) |
6372 | return; | |
6373 | } | |
6374 | ||
56be3814 | 6375 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6376 | return; |
6377 | ||
6378 | /* This register is not available. */ | |
56be3814 | 6379 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6380 | |
6381 | return; | |
6382 | } | |
6383 | ||
56be3814 | 6384 | fetch_registers_using_g (regcache); |
74ca34ce | 6385 | |
4a22f64d | 6386 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6387 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6388 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6389 | { |
6390 | /* This register is not available. */ | |
56be3814 | 6391 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6392 | } |
6393 | } | |
6394 | ||
c906108c SS |
6395 | /* Prepare to store registers. Since we may send them all (using a |
6396 | 'G' request), we have to read out the ones we don't want to change | |
6397 | first. */ | |
6398 | ||
c5aa993b | 6399 | static void |
f32dbf8c | 6400 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6401 | { |
ea9c271d | 6402 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6403 | int i; |
cfd77fa1 | 6404 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6405 | |
c906108c | 6406 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6407 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6408 | { |
6409 | case PACKET_DISABLE: | |
6410 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6411 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6412 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6413 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6414 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6415 | break; |
6416 | case PACKET_ENABLE: | |
6417 | break; | |
6418 | } | |
6419 | } | |
6420 | ||
ad10f812 | 6421 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6422 | packet was not recognized. */ |
5a2468f5 JM |
6423 | |
6424 | static int | |
1f4437a4 MS |
6425 | store_register_using_P (const struct regcache *regcache, |
6426 | struct packet_reg *reg) | |
5a2468f5 | 6427 | { |
4a22f64d | 6428 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6429 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6430 | /* Try storing a single register. */ |
6d820c5c | 6431 | char *buf = rs->buf; |
cfd77fa1 | 6432 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6433 | char *p; |
5a2468f5 | 6434 | |
4082afcc | 6435 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6436 | return 0; |
6437 | ||
6438 | if (reg->pnum == -1) | |
6439 | return 0; | |
6440 | ||
ea9c271d | 6441 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6442 | p = buf + strlen (buf); |
56be3814 | 6443 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6444 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6445 | putpkt (rs->buf); |
6446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6447 | |
74ca34ce DJ |
6448 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6449 | { | |
6450 | case PACKET_OK: | |
6451 | return 1; | |
6452 | case PACKET_ERROR: | |
27a9c0bf MS |
6453 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6454 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6455 | case PACKET_UNKNOWN: |
6456 | return 0; | |
6457 | default: | |
6458 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6459 | } | |
c906108c SS |
6460 | } |
6461 | ||
23860348 MS |
6462 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6463 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6464 | |
6465 | static void | |
56be3814 | 6466 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6467 | { |
d01949b6 | 6468 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6469 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6470 | gdb_byte *regs; |
c906108c SS |
6471 | char *p; |
6472 | ||
193cb69f AC |
6473 | /* Extract all the registers in the regcache copying them into a |
6474 | local buffer. */ | |
6475 | { | |
b323314b | 6476 | int i; |
a744cf53 | 6477 | |
ea9c271d DJ |
6478 | regs = alloca (rsa->sizeof_g_packet); |
6479 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6480 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6481 | { |
ea9c271d | 6482 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6483 | |
b323314b | 6484 | if (r->in_g_packet) |
56be3814 | 6485 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6486 | } |
6487 | } | |
c906108c SS |
6488 | |
6489 | /* Command describes registers byte by byte, | |
6490 | each byte encoded as two hex characters. */ | |
6d820c5c | 6491 | p = rs->buf; |
193cb69f | 6492 | *p++ = 'G'; |
74ca34ce DJ |
6493 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6494 | updated. */ | |
6495 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6496 | putpkt (rs->buf); |
6497 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6498 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6499 | error (_("Could not write registers; remote failure reply '%s'"), |
6500 | rs->buf); | |
c906108c | 6501 | } |
74ca34ce DJ |
6502 | |
6503 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6504 | of the register cache buffer. FIXME: ignores errors. */ | |
6505 | ||
6506 | static void | |
28439f5e PA |
6507 | remote_store_registers (struct target_ops *ops, |
6508 | struct regcache *regcache, int regnum) | |
74ca34ce | 6509 | { |
74ca34ce DJ |
6510 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6511 | int i; | |
6512 | ||
e6e4e701 | 6513 | set_remote_traceframe (); |
79d7f229 | 6514 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6515 | |
6516 | if (regnum >= 0) | |
6517 | { | |
6518 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6519 | |
74ca34ce DJ |
6520 | gdb_assert (reg != NULL); |
6521 | ||
6522 | /* Always prefer to store registers using the 'P' packet if | |
6523 | possible; we often change only a small number of registers. | |
6524 | Sometimes we change a larger number; we'd need help from a | |
6525 | higher layer to know to use 'G'. */ | |
56be3814 | 6526 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6527 | return; |
6528 | ||
6529 | /* For now, don't complain if we have no way to write the | |
6530 | register. GDB loses track of unavailable registers too | |
6531 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6532 | any way to read the register, either... */ |
74ca34ce DJ |
6533 | if (!reg->in_g_packet) |
6534 | return; | |
6535 | ||
56be3814 | 6536 | store_registers_using_G (regcache); |
74ca34ce DJ |
6537 | return; |
6538 | } | |
6539 | ||
56be3814 | 6540 | store_registers_using_G (regcache); |
74ca34ce | 6541 | |
4a22f64d | 6542 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6543 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6544 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6545 | /* See above for why we do not issue an error here. */ |
6546 | continue; | |
6547 | } | |
c906108c SS |
6548 | \f |
6549 | ||
6550 | /* Return the number of hex digits in num. */ | |
6551 | ||
6552 | static int | |
fba45db2 | 6553 | hexnumlen (ULONGEST num) |
c906108c SS |
6554 | { |
6555 | int i; | |
6556 | ||
6557 | for (i = 0; num != 0; i++) | |
6558 | num >>= 4; | |
6559 | ||
6560 | return max (i, 1); | |
6561 | } | |
6562 | ||
2df3850c | 6563 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6564 | |
6565 | static int | |
fba45db2 | 6566 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6567 | { |
c906108c | 6568 | int len = hexnumlen (num); |
a744cf53 | 6569 | |
2df3850c JM |
6570 | return hexnumnstr (buf, num, len); |
6571 | } | |
6572 | ||
c906108c | 6573 | |
2df3850c | 6574 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6575 | |
2df3850c | 6576 | static int |
fba45db2 | 6577 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6578 | { |
6579 | int i; | |
6580 | ||
6581 | buf[width] = '\0'; | |
6582 | ||
6583 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6584 | { |
c5aa993b | 6585 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6586 | num >>= 4; |
6587 | } | |
6588 | ||
2df3850c | 6589 | return width; |
c906108c SS |
6590 | } |
6591 | ||
23860348 | 6592 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6593 | |
6594 | static CORE_ADDR | |
fba45db2 | 6595 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6596 | { |
883b9c6c | 6597 | unsigned int address_size = remote_address_size; |
a744cf53 | 6598 | |
911c95a5 UW |
6599 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6600 | if (!address_size) | |
f5656ead | 6601 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6602 | |
6603 | if (address_size > 0 | |
6604 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6605 | { |
6606 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6607 | in a ULONGEST variable. */ |
c906108c | 6608 | ULONGEST mask = 1; |
a744cf53 | 6609 | |
911c95a5 | 6610 | mask = (mask << address_size) - 1; |
c906108c SS |
6611 | addr &= mask; |
6612 | } | |
6613 | return addr; | |
6614 | } | |
6615 | ||
6616 | /* Determine whether the remote target supports binary downloading. | |
6617 | This is accomplished by sending a no-op memory write of zero length | |
6618 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6619 | the whole packet, since many stubs strip the eighth bit and |
6620 | subsequently compute a wrong checksum, which causes real havoc with | |
6621 | remote_write_bytes. | |
7a292a7a | 6622 | |
96baa820 | 6623 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6624 | clean. In cases like this, the user should clear "remote |
23860348 | 6625 | X-packet". */ |
96baa820 | 6626 | |
c906108c | 6627 | static void |
fba45db2 | 6628 | check_binary_download (CORE_ADDR addr) |
c906108c | 6629 | { |
d01949b6 | 6630 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6631 | |
4082afcc | 6632 | switch (packet_support (PACKET_X)) |
c906108c | 6633 | { |
96baa820 JM |
6634 | case PACKET_DISABLE: |
6635 | break; | |
6636 | case PACKET_ENABLE: | |
6637 | break; | |
6638 | case PACKET_SUPPORT_UNKNOWN: | |
6639 | { | |
96baa820 | 6640 | char *p; |
802188a7 | 6641 | |
2e9f7625 | 6642 | p = rs->buf; |
96baa820 JM |
6643 | *p++ = 'X'; |
6644 | p += hexnumstr (p, (ULONGEST) addr); | |
6645 | *p++ = ','; | |
6646 | p += hexnumstr (p, (ULONGEST) 0); | |
6647 | *p++ = ':'; | |
6648 | *p = '\0'; | |
802188a7 | 6649 | |
2e9f7625 | 6650 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6651 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6652 | |
2e9f7625 | 6653 | if (rs->buf[0] == '\0') |
96baa820 JM |
6654 | { |
6655 | if (remote_debug) | |
6656 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6657 | "binary downloading NOT " |
6658 | "supported by target\n"); | |
444abaca | 6659 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6660 | } |
6661 | else | |
6662 | { | |
6663 | if (remote_debug) | |
6664 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6665 | "binary downloading supported by target\n"); |
444abaca | 6666 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6667 | } |
6668 | break; | |
6669 | } | |
c906108c SS |
6670 | } |
6671 | } | |
6672 | ||
6673 | /* Write memory data directly to the remote machine. | |
6674 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6675 | HEADER is the starting part of the packet. |
c906108c SS |
6676 | MEMADDR is the address in the remote memory space. |
6677 | MYADDR is the address of the buffer in our space. | |
6678 | LEN is the number of bytes. | |
a76d924d DJ |
6679 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6680 | should send data as binary ('X'), or hex-encoded ('M'). | |
6681 | ||
6682 | The function creates packet of the form | |
6683 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6684 | ||
6685 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6686 | ||
6687 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6688 | are omitted. | |
6689 | ||
9b409511 YQ |
6690 | Return the transferred status, error or OK (an |
6691 | 'enum target_xfer_status' value). Save the number of bytes | |
6692 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
c906108c | 6693 | |
9b409511 | 6694 | static enum target_xfer_status |
a76d924d | 6695 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
5d6df423 | 6696 | const gdb_byte *myaddr, ULONGEST len, |
9b409511 YQ |
6697 | ULONGEST *xfered_len, char packet_format, |
6698 | int use_length) | |
c906108c | 6699 | { |
6d820c5c | 6700 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6701 | char *p; |
a76d924d DJ |
6702 | char *plen = NULL; |
6703 | int plenlen = 0; | |
917317f4 JM |
6704 | int todo; |
6705 | int nr_bytes; | |
a257b5bb | 6706 | int payload_size; |
6765f3e5 | 6707 | int payload_length; |
a76d924d DJ |
6708 | int header_length; |
6709 | ||
6710 | if (packet_format != 'X' && packet_format != 'M') | |
6711 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6712 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6713 | |
5d6df423 | 6714 | if (len == 0) |
9b409511 | 6715 | return TARGET_XFER_EOF; |
b2182ed2 | 6716 | |
3de11b2e | 6717 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6718 | |
6d820c5c DJ |
6719 | /* The packet buffer will be large enough for the payload; |
6720 | get_memory_packet_size ensures this. */ | |
a76d924d | 6721 | rs->buf[0] = '\0'; |
c906108c | 6722 | |
a257b5bb | 6723 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6724 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6725 | ||
a76d924d DJ |
6726 | payload_size -= strlen ("$,:#NN"); |
6727 | if (!use_length) | |
0df8b418 | 6728 | /* The comma won't be used. */ |
a76d924d DJ |
6729 | payload_size += 1; |
6730 | header_length = strlen (header); | |
6731 | payload_size -= header_length; | |
3de11b2e | 6732 | payload_size -= hexnumlen (memaddr); |
c906108c | 6733 | |
a76d924d | 6734 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6735 | |
a76d924d DJ |
6736 | strcat (rs->buf, header); |
6737 | p = rs->buf + strlen (header); | |
6738 | ||
6739 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6740 | if (packet_format == 'X') | |
c906108c | 6741 | { |
23860348 | 6742 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6743 | todo = min (len, payload_size); |
a76d924d DJ |
6744 | if (use_length) |
6745 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6746 | todo = min (todo, payload_size); |
a76d924d DJ |
6747 | } |
6748 | else | |
6749 | { | |
23860348 | 6750 | /* Num bytes that will fit. */ |
a257b5bb | 6751 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6752 | if (use_length) |
6753 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6754 | todo = min (todo, payload_size / 2); |
917317f4 | 6755 | } |
a76d924d | 6756 | |
3de11b2e NS |
6757 | if (todo <= 0) |
6758 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6759 | _("minimum packet size too small to write data")); |
802188a7 | 6760 | |
6765f3e5 DJ |
6761 | /* If we already need another packet, then try to align the end |
6762 | of this packet to a useful boundary. */ | |
6763 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6764 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6765 | ||
a257b5bb | 6766 | /* Append "<memaddr>". */ |
917317f4 JM |
6767 | memaddr = remote_address_masked (memaddr); |
6768 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6769 | |
a76d924d DJ |
6770 | if (use_length) |
6771 | { | |
6772 | /* Append ",". */ | |
6773 | *p++ = ','; | |
802188a7 | 6774 | |
a76d924d DJ |
6775 | /* Append <len>. Retain the location/size of <len>. It may need to |
6776 | be adjusted once the packet body has been created. */ | |
6777 | plen = p; | |
6778 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6779 | p += plenlen; | |
6780 | } | |
a257b5bb AC |
6781 | |
6782 | /* Append ":". */ | |
917317f4 JM |
6783 | *p++ = ':'; |
6784 | *p = '\0'; | |
802188a7 | 6785 | |
a257b5bb | 6786 | /* Append the packet body. */ |
a76d924d | 6787 | if (packet_format == 'X') |
917317f4 | 6788 | { |
917317f4 JM |
6789 | /* Binary mode. Send target system values byte by byte, in |
6790 | increasing byte addresses. Only escape certain critical | |
6791 | characters. */ | |
bc20a4af PA |
6792 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6793 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6794 | |
6795 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6796 | a second try to keep the end of the packet aligned. Don't do |
6797 | this if the packet is tiny. */ | |
6798 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6799 | { |
6800 | int new_nr_bytes; | |
6801 | ||
6802 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6803 | - memaddr); | |
6804 | if (new_nr_bytes != nr_bytes) | |
6805 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6806 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6807 | payload_size); |
6808 | } | |
6809 | ||
6810 | p += payload_length; | |
a76d924d | 6811 | if (use_length && nr_bytes < todo) |
c906108c | 6812 | { |
802188a7 | 6813 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6814 | and we have actually sent fewer bytes than planned. |
6815 | Fix-up the length field of the packet. Use the same | |
6816 | number of characters as before. */ | |
917317f4 JM |
6817 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6818 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6819 | } |
a76d924d DJ |
6820 | } |
6821 | else | |
6822 | { | |
917317f4 JM |
6823 | /* Normal mode: Send target system values byte by byte, in |
6824 | increasing byte addresses. Each byte is encoded as a two hex | |
6825 | value. */ | |
2644f393 | 6826 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6827 | p += 2 * nr_bytes; |
c906108c | 6828 | } |
802188a7 | 6829 | |
2e9f7625 | 6830 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6831 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6832 | |
2e9f7625 | 6833 | if (rs->buf[0] == 'E') |
00d84524 | 6834 | return TARGET_XFER_E_IO; |
802188a7 | 6835 | |
23860348 MS |
6836 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6837 | fewer bytes than we'd planned. */ | |
9b409511 YQ |
6838 | *xfered_len = (ULONGEST) nr_bytes; |
6839 | return TARGET_XFER_OK; | |
c906108c SS |
6840 | } |
6841 | ||
a76d924d DJ |
6842 | /* Write memory data directly to the remote machine. |
6843 | This does not inform the data cache; the data cache uses this. | |
6844 | MEMADDR is the address in the remote memory space. | |
6845 | MYADDR is the address of the buffer in our space. | |
6846 | LEN is the number of bytes. | |
6847 | ||
9b409511 YQ |
6848 | Return the transferred status, error or OK (an |
6849 | 'enum target_xfer_status' value). Save the number of bytes | |
6850 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 6851 | |
9b409511 YQ |
6852 | static enum target_xfer_status |
6853 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
6854 | ULONGEST *xfered_len) | |
a76d924d DJ |
6855 | { |
6856 | char *packet_format = 0; | |
6857 | ||
6858 | /* Check whether the target supports binary download. */ | |
6859 | check_binary_download (memaddr); | |
6860 | ||
4082afcc | 6861 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
6862 | { |
6863 | case PACKET_ENABLE: | |
6864 | packet_format = "X"; | |
6865 | break; | |
6866 | case PACKET_DISABLE: | |
6867 | packet_format = "M"; | |
6868 | break; | |
6869 | case PACKET_SUPPORT_UNKNOWN: | |
6870 | internal_error (__FILE__, __LINE__, | |
6871 | _("remote_write_bytes: bad internal state")); | |
6872 | default: | |
6873 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6874 | } | |
6875 | ||
6876 | return remote_write_bytes_aux (packet_format, | |
9b409511 YQ |
6877 | memaddr, myaddr, len, xfered_len, |
6878 | packet_format[0], 1); | |
a76d924d DJ |
6879 | } |
6880 | ||
9217e74e YQ |
6881 | /* Read memory data directly from the remote machine. |
6882 | This does not use the data cache; the data cache uses this. | |
6883 | MEMADDR is the address in the remote memory space. | |
6884 | MYADDR is the address of the buffer in our space. | |
6885 | LEN is the number of bytes. | |
6886 | ||
6887 | Return the transferred status, error or OK (an | |
6888 | 'enum target_xfer_status' value). Save the number of bytes | |
6889 | transferred in *XFERED_LEN. */ | |
6890 | ||
6891 | static enum target_xfer_status | |
6892 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len, | |
6893 | ULONGEST *xfered_len) | |
6894 | { | |
6895 | struct remote_state *rs = get_remote_state (); | |
6896 | int max_buf_size; /* Max size of packet output buffer. */ | |
6897 | char *p; | |
6898 | int todo; | |
6899 | int i; | |
6900 | ||
6901 | max_buf_size = get_memory_read_packet_size (); | |
6902 | /* The packet buffer will be large enough for the payload; | |
6903 | get_memory_packet_size ensures this. */ | |
6904 | ||
6905 | /* Number if bytes that will fit. */ | |
6906 | todo = min (len, max_buf_size / 2); | |
6907 | ||
6908 | /* Construct "m"<memaddr>","<len>". */ | |
6909 | memaddr = remote_address_masked (memaddr); | |
6910 | p = rs->buf; | |
6911 | *p++ = 'm'; | |
6912 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6913 | *p++ = ','; | |
6914 | p += hexnumstr (p, (ULONGEST) todo); | |
6915 | *p = '\0'; | |
6916 | putpkt (rs->buf); | |
6917 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6918 | if (rs->buf[0] == 'E' | |
6919 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6920 | && rs->buf[3] == '\0') | |
6921 | return TARGET_XFER_E_IO; | |
6922 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
6923 | characters. */ | |
6924 | p = rs->buf; | |
6925 | i = hex2bin (p, myaddr, todo); | |
6926 | /* Return what we have. Let higher layers handle partial reads. */ | |
6927 | *xfered_len = (ULONGEST) i; | |
6928 | return TARGET_XFER_OK; | |
6929 | } | |
6930 | ||
b55fbac4 YQ |
6931 | /* Using the set of read-only target sections of remote, read live |
6932 | read-only memory. | |
8acf9577 YQ |
6933 | |
6934 | For interface/parameters/return description see target.h, | |
6935 | to_xfer_partial. */ | |
6936 | ||
6937 | static enum target_xfer_status | |
b55fbac4 YQ |
6938 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
6939 | ULONGEST memaddr, ULONGEST len, | |
6940 | ULONGEST *xfered_len) | |
8acf9577 YQ |
6941 | { |
6942 | struct target_section *secp; | |
6943 | struct target_section_table *table; | |
6944 | ||
6945 | secp = target_section_by_addr (ops, memaddr); | |
6946 | if (secp != NULL | |
6947 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
6948 | secp->the_bfd_section) | |
6949 | & SEC_READONLY)) | |
6950 | { | |
6951 | struct target_section *p; | |
6952 | ULONGEST memend = memaddr + len; | |
6953 | ||
6954 | table = target_get_section_table (ops); | |
6955 | ||
6956 | for (p = table->sections; p < table->sections_end; p++) | |
6957 | { | |
6958 | if (memaddr >= p->addr) | |
6959 | { | |
6960 | if (memend <= p->endaddr) | |
6961 | { | |
6962 | /* Entire transfer is within this section. */ | |
b55fbac4 YQ |
6963 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6964 | xfered_len); | |
8acf9577 YQ |
6965 | } |
6966 | else if (memaddr >= p->endaddr) | |
6967 | { | |
6968 | /* This section ends before the transfer starts. */ | |
6969 | continue; | |
6970 | } | |
6971 | else | |
6972 | { | |
6973 | /* This section overlaps the transfer. Just do half. */ | |
6974 | len = p->endaddr - memaddr; | |
b55fbac4 YQ |
6975 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6976 | xfered_len); | |
8acf9577 YQ |
6977 | } |
6978 | } | |
6979 | } | |
6980 | } | |
6981 | ||
6982 | return TARGET_XFER_EOF; | |
6983 | } | |
6984 | ||
9217e74e YQ |
6985 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
6986 | first if the requested memory is unavailable in traceframe. | |
6987 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 6988 | |
9b409511 | 6989 | static enum target_xfer_status |
8acf9577 YQ |
6990 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
6991 | gdb_byte *myaddr, ULONGEST len, ULONGEST *xfered_len) | |
c906108c | 6992 | { |
6b6aa828 | 6993 | if (len == 0) |
96c4f946 | 6994 | return TARGET_XFER_EOF; |
b2182ed2 | 6995 | |
8acf9577 YQ |
6996 | if (get_traceframe_number () != -1) |
6997 | { | |
6998 | VEC(mem_range_s) *available; | |
6999 | ||
7000 | /* If we fail to get the set of available memory, then the | |
7001 | target does not support querying traceframe info, and so we | |
7002 | attempt reading from the traceframe anyway (assuming the | |
7003 | target implements the old QTro packet then). */ | |
7004 | if (traceframe_available_memory (&available, memaddr, len)) | |
7005 | { | |
7006 | struct cleanup *old_chain; | |
7007 | ||
7008 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7009 | ||
7010 | if (VEC_empty (mem_range_s, available) | |
7011 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7012 | { | |
7013 | enum target_xfer_status res; | |
7014 | ||
7015 | /* Don't read into the traceframe's available | |
7016 | memory. */ | |
7017 | if (!VEC_empty (mem_range_s, available)) | |
7018 | { | |
7019 | LONGEST oldlen = len; | |
7020 | ||
7021 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7022 | gdb_assert (len <= oldlen); | |
7023 | } | |
7024 | ||
7025 | do_cleanups (old_chain); | |
7026 | ||
7027 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7028 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
8acf9577 YQ |
7029 | len, xfered_len); |
7030 | if (res == TARGET_XFER_OK) | |
7031 | return TARGET_XFER_OK; | |
7032 | else | |
7033 | { | |
7034 | /* No use trying further, we know some memory starting | |
7035 | at MEMADDR isn't available. */ | |
7036 | *xfered_len = len; | |
7037 | return TARGET_XFER_UNAVAILABLE; | |
7038 | } | |
7039 | } | |
7040 | ||
7041 | /* Don't try to read more than how much is available, in | |
7042 | case the target implements the deprecated QTro packet to | |
7043 | cater for older GDBs (the target's knowledge of read-only | |
7044 | sections may be outdated by now). */ | |
7045 | len = VEC_index (mem_range_s, available, 0)->length; | |
7046 | ||
7047 | do_cleanups (old_chain); | |
7048 | } | |
7049 | } | |
7050 | ||
9217e74e | 7051 | return remote_read_bytes_1 (memaddr, myaddr, len, xfered_len); |
c906108c | 7052 | } |
74531fed | 7053 | |
c906108c | 7054 | \f |
c906108c | 7055 | |
a76d924d DJ |
7056 | /* Sends a packet with content determined by the printf format string |
7057 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7058 | whether the packet was a success, a failure, or unknown. */ | |
7059 | ||
77b64a49 PA |
7060 | static enum packet_result remote_send_printf (const char *format, ...) |
7061 | ATTRIBUTE_PRINTF (1, 2); | |
7062 | ||
2c0b251b | 7063 | static enum packet_result |
a76d924d DJ |
7064 | remote_send_printf (const char *format, ...) |
7065 | { | |
7066 | struct remote_state *rs = get_remote_state (); | |
7067 | int max_size = get_remote_packet_size (); | |
a76d924d | 7068 | va_list ap; |
a744cf53 | 7069 | |
a76d924d DJ |
7070 | va_start (ap, format); |
7071 | ||
7072 | rs->buf[0] = '\0'; | |
7073 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7074 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7075 | |
7076 | if (putpkt (rs->buf) < 0) | |
7077 | error (_("Communication problem with target.")); | |
7078 | ||
7079 | rs->buf[0] = '\0'; | |
7080 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7081 | ||
7082 | return packet_check_result (rs->buf); | |
7083 | } | |
7084 | ||
7085 | static void | |
7086 | restore_remote_timeout (void *p) | |
7087 | { | |
7088 | int value = *(int *)p; | |
a744cf53 | 7089 | |
a76d924d DJ |
7090 | remote_timeout = value; |
7091 | } | |
7092 | ||
7093 | /* Flash writing can take quite some time. We'll set | |
7094 | effectively infinite timeout for flash operations. | |
7095 | In future, we'll need to decide on a better approach. */ | |
7096 | static const int remote_flash_timeout = 1000; | |
7097 | ||
7098 | static void | |
7099 | remote_flash_erase (struct target_ops *ops, | |
7100 | ULONGEST address, LONGEST length) | |
7101 | { | |
f5656ead | 7102 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7103 | int saved_remote_timeout = remote_timeout; |
7104 | enum packet_result ret; | |
a76d924d DJ |
7105 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7106 | &saved_remote_timeout); | |
a744cf53 | 7107 | |
a76d924d DJ |
7108 | remote_timeout = remote_flash_timeout; |
7109 | ||
7110 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7111 | phex (address, addr_size), |
a76d924d DJ |
7112 | phex (length, 4)); |
7113 | switch (ret) | |
7114 | { | |
7115 | case PACKET_UNKNOWN: | |
7116 | error (_("Remote target does not support flash erase")); | |
7117 | case PACKET_ERROR: | |
7118 | error (_("Error erasing flash with vFlashErase packet")); | |
7119 | default: | |
7120 | break; | |
7121 | } | |
7122 | ||
7123 | do_cleanups (back_to); | |
7124 | } | |
7125 | ||
9b409511 YQ |
7126 | static enum target_xfer_status |
7127 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7128 | ULONGEST length, ULONGEST *xfered_len, | |
7129 | const gdb_byte *data) | |
a76d924d DJ |
7130 | { |
7131 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7132 | enum target_xfer_status ret; |
a76d924d | 7133 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7134 | &saved_remote_timeout); |
a76d924d DJ |
7135 | |
7136 | remote_timeout = remote_flash_timeout; | |
9b409511 YQ |
7137 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, |
7138 | xfered_len,'X', 0); | |
a76d924d DJ |
7139 | do_cleanups (back_to); |
7140 | ||
7141 | return ret; | |
7142 | } | |
7143 | ||
7144 | static void | |
7145 | remote_flash_done (struct target_ops *ops) | |
7146 | { | |
7147 | int saved_remote_timeout = remote_timeout; | |
7148 | int ret; | |
7149 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7150 | &saved_remote_timeout); | |
7151 | ||
7152 | remote_timeout = remote_flash_timeout; | |
7153 | ret = remote_send_printf ("vFlashDone"); | |
7154 | do_cleanups (back_to); | |
7155 | ||
7156 | switch (ret) | |
7157 | { | |
7158 | case PACKET_UNKNOWN: | |
7159 | error (_("Remote target does not support vFlashDone")); | |
7160 | case PACKET_ERROR: | |
7161 | error (_("Error finishing flash operation")); | |
7162 | default: | |
7163 | break; | |
7164 | } | |
7165 | } | |
7166 | ||
c906108c | 7167 | static void |
fba45db2 | 7168 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7169 | { |
7170 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7171 | } | |
7172 | \f | |
7173 | /* Stuff for dealing with the packets which are part of this protocol. | |
7174 | See comment at top of file for details. */ | |
7175 | ||
1927e618 PA |
7176 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7177 | error to higher layers. Called when a serial error is detected. | |
7178 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7179 | the system error message for errno at function entry and final dot |
7180 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7181 | |
7182 | static void | |
7183 | unpush_and_perror (const char *string) | |
7184 | { | |
d6cb50a2 | 7185 | int saved_errno = errno; |
1927e618 PA |
7186 | |
7187 | remote_unpush_target (); | |
d6cb50a2 JK |
7188 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7189 | safe_strerror (saved_errno)); | |
1927e618 PA |
7190 | } |
7191 | ||
0876f84a | 7192 | /* Read a single character from the remote end. */ |
c906108c SS |
7193 | |
7194 | static int | |
fba45db2 | 7195 | readchar (int timeout) |
c906108c SS |
7196 | { |
7197 | int ch; | |
5d93a237 | 7198 | struct remote_state *rs = get_remote_state (); |
c906108c | 7199 | |
5d93a237 | 7200 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7201 | |
2acceee2 | 7202 | if (ch >= 0) |
0876f84a | 7203 | return ch; |
2acceee2 JM |
7204 | |
7205 | switch ((enum serial_rc) ch) | |
c906108c SS |
7206 | { |
7207 | case SERIAL_EOF: | |
78a095c3 | 7208 | remote_unpush_target (); |
598d3636 | 7209 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7210 | /* no return */ |
c906108c | 7211 | case SERIAL_ERROR: |
1927e618 PA |
7212 | unpush_and_perror (_("Remote communication error. " |
7213 | "Target disconnected.")); | |
2acceee2 | 7214 | /* no return */ |
c906108c | 7215 | case SERIAL_TIMEOUT: |
2acceee2 | 7216 | break; |
c906108c | 7217 | } |
2acceee2 | 7218 | return ch; |
c906108c SS |
7219 | } |
7220 | ||
c33e31fd PA |
7221 | /* Wrapper for serial_write that closes the target and throws if |
7222 | writing fails. */ | |
7223 | ||
7224 | static void | |
7225 | remote_serial_write (const char *str, int len) | |
7226 | { | |
5d93a237 TT |
7227 | struct remote_state *rs = get_remote_state (); |
7228 | ||
7229 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7230 | { |
1927e618 PA |
7231 | unpush_and_perror (_("Remote communication error. " |
7232 | "Target disconnected.")); | |
c33e31fd PA |
7233 | } |
7234 | } | |
7235 | ||
6d820c5c DJ |
7236 | /* Send the command in *BUF to the remote machine, and read the reply |
7237 | into *BUF. Report an error if we get an error reply. Resize | |
7238 | *BUF using xrealloc if necessary to hold the result, and update | |
7239 | *SIZEOF_BUF. */ | |
c906108c SS |
7240 | |
7241 | static void | |
6d820c5c DJ |
7242 | remote_send (char **buf, |
7243 | long *sizeof_buf) | |
c906108c | 7244 | { |
6d820c5c | 7245 | putpkt (*buf); |
c2d11a7d | 7246 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7247 | |
6d820c5c DJ |
7248 | if ((*buf)[0] == 'E') |
7249 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7250 | } |
7251 | ||
6e5abd65 PA |
7252 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7253 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7254 | etc. The caller is responsible for releasing the returned | |
7255 | memory. */ | |
7256 | ||
7257 | static char * | |
7258 | escape_buffer (const char *buf, int n) | |
7259 | { | |
7260 | struct cleanup *old_chain; | |
7261 | struct ui_file *stb; | |
7262 | char *str; | |
6e5abd65 PA |
7263 | |
7264 | stb = mem_fileopen (); | |
7265 | old_chain = make_cleanup_ui_file_delete (stb); | |
7266 | ||
6ef284bd | 7267 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7268 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7269 | do_cleanups (old_chain); |
7270 | return str; | |
7271 | } | |
7272 | ||
c906108c SS |
7273 | /* Display a null-terminated packet on stdout, for debugging, using C |
7274 | string notation. */ | |
7275 | ||
7276 | static void | |
baa336ce | 7277 | print_packet (const char *buf) |
c906108c SS |
7278 | { |
7279 | puts_filtered ("\""); | |
43e526b9 | 7280 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7281 | puts_filtered ("\""); |
7282 | } | |
7283 | ||
7284 | int | |
baa336ce | 7285 | putpkt (const char *buf) |
c906108c SS |
7286 | { |
7287 | return putpkt_binary (buf, strlen (buf)); | |
7288 | } | |
7289 | ||
7290 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7291 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7292 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7293 | and for a possible /0 if we are debugging (remote_debug) and want |
7294 | to print the sent packet as a string. */ | |
c906108c SS |
7295 | |
7296 | static int | |
baa336ce | 7297 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7298 | { |
2d717e4f | 7299 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7300 | int i; |
7301 | unsigned char csum = 0; | |
11cf8741 | 7302 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7303 | |
c906108c SS |
7304 | int ch; |
7305 | int tcount = 0; | |
7306 | char *p; | |
dd61ec5c | 7307 | char *message; |
c906108c | 7308 | |
e24a49d8 PA |
7309 | /* Catch cases like trying to read memory or listing threads while |
7310 | we're waiting for a stop reply. The remote server wouldn't be | |
7311 | ready to handle this request, so we'd hang and timeout. We don't | |
7312 | have to worry about this in synchronous mode, because in that | |
7313 | case it's not possible to issue a command while the target is | |
74531fed PA |
7314 | running. This is not a problem in non-stop mode, because in that |
7315 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7316 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7317 | { |
7318 | error (_("Cannot execute this command while the target is running.\n" | |
7319 | "Use the \"interrupt\" command to stop the target\n" | |
7320 | "and then try again.")); | |
7321 | } | |
e24a49d8 | 7322 | |
2d717e4f DJ |
7323 | /* We're sending out a new packet. Make sure we don't look at a |
7324 | stale cached response. */ | |
7325 | rs->cached_wait_status = 0; | |
7326 | ||
c906108c SS |
7327 | /* Copy the packet into buffer BUF2, encapsulating it |
7328 | and giving it a checksum. */ | |
7329 | ||
c906108c SS |
7330 | p = buf2; |
7331 | *p++ = '$'; | |
7332 | ||
7333 | for (i = 0; i < cnt; i++) | |
7334 | { | |
7335 | csum += buf[i]; | |
7336 | *p++ = buf[i]; | |
7337 | } | |
7338 | *p++ = '#'; | |
7339 | *p++ = tohex ((csum >> 4) & 0xf); | |
7340 | *p++ = tohex (csum & 0xf); | |
7341 | ||
7342 | /* Send it over and over until we get a positive ack. */ | |
7343 | ||
7344 | while (1) | |
7345 | { | |
7346 | int started_error_output = 0; | |
7347 | ||
7348 | if (remote_debug) | |
7349 | { | |
6e5abd65 PA |
7350 | struct cleanup *old_chain; |
7351 | char *str; | |
7352 | ||
c906108c | 7353 | *p = '\0'; |
6e5abd65 PA |
7354 | str = escape_buffer (buf2, p - buf2); |
7355 | old_chain = make_cleanup (xfree, str); | |
7356 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7357 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7358 | do_cleanups (old_chain); |
c906108c | 7359 | } |
c33e31fd | 7360 | remote_serial_write (buf2, p - buf2); |
c906108c | 7361 | |
a6f3e723 SL |
7362 | /* If this is a no acks version of the remote protocol, send the |
7363 | packet and move on. */ | |
7364 | if (rs->noack_mode) | |
7365 | break; | |
7366 | ||
74531fed PA |
7367 | /* Read until either a timeout occurs (-2) or '+' is read. |
7368 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7369 | while (1) |
7370 | { | |
7371 | ch = readchar (remote_timeout); | |
7372 | ||
c5aa993b | 7373 | if (remote_debug) |
c906108c SS |
7374 | { |
7375 | switch (ch) | |
7376 | { | |
7377 | case '+': | |
1216fa2c | 7378 | case '-': |
c906108c SS |
7379 | case SERIAL_TIMEOUT: |
7380 | case '$': | |
74531fed | 7381 | case '%': |
c906108c SS |
7382 | if (started_error_output) |
7383 | { | |
7384 | putchar_unfiltered ('\n'); | |
7385 | started_error_output = 0; | |
7386 | } | |
7387 | } | |
7388 | } | |
7389 | ||
7390 | switch (ch) | |
7391 | { | |
7392 | case '+': | |
7393 | if (remote_debug) | |
0f71a2f6 | 7394 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7395 | return 1; |
1216fa2c AC |
7396 | case '-': |
7397 | if (remote_debug) | |
7398 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7399 | /* FALLTHROUGH */ |
c906108c | 7400 | case SERIAL_TIMEOUT: |
c5aa993b | 7401 | tcount++; |
c906108c SS |
7402 | if (tcount > 3) |
7403 | return 0; | |
23860348 | 7404 | break; /* Retransmit buffer. */ |
c906108c SS |
7405 | case '$': |
7406 | { | |
40e3f985 | 7407 | if (remote_debug) |
2bc416ba | 7408 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7409 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7410 | /* It's probably an old response sent because an ACK |
7411 | was lost. Gobble up the packet and ack it so it | |
7412 | doesn't get retransmitted when we resend this | |
7413 | packet. */ | |
6d820c5c | 7414 | skip_frame (); |
c33e31fd | 7415 | remote_serial_write ("+", 1); |
23860348 | 7416 | continue; /* Now, go look for +. */ |
c906108c | 7417 | } |
74531fed PA |
7418 | |
7419 | case '%': | |
7420 | { | |
7421 | int val; | |
7422 | ||
7423 | /* If we got a notification, handle it, and go back to looking | |
7424 | for an ack. */ | |
7425 | /* We've found the start of a notification. Now | |
7426 | collect the data. */ | |
7427 | val = read_frame (&rs->buf, &rs->buf_size); | |
7428 | if (val >= 0) | |
7429 | { | |
7430 | if (remote_debug) | |
7431 | { | |
6e5abd65 PA |
7432 | struct cleanup *old_chain; |
7433 | char *str; | |
7434 | ||
7435 | str = escape_buffer (rs->buf, val); | |
7436 | old_chain = make_cleanup (xfree, str); | |
7437 | fprintf_unfiltered (gdb_stdlog, | |
7438 | " Notification received: %s\n", | |
7439 | str); | |
7440 | do_cleanups (old_chain); | |
74531fed | 7441 | } |
5965e028 | 7442 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7443 | /* We're in sync now, rewait for the ack. */ |
7444 | tcount = 0; | |
7445 | } | |
7446 | else | |
7447 | { | |
7448 | if (remote_debug) | |
7449 | { | |
7450 | if (!started_error_output) | |
7451 | { | |
7452 | started_error_output = 1; | |
7453 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7454 | } | |
7455 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7456 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7457 | } | |
7458 | } | |
7459 | continue; | |
7460 | } | |
7461 | /* fall-through */ | |
c906108c SS |
7462 | default: |
7463 | if (remote_debug) | |
7464 | { | |
7465 | if (!started_error_output) | |
7466 | { | |
7467 | started_error_output = 1; | |
0f71a2f6 | 7468 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7469 | } |
0f71a2f6 | 7470 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7471 | } |
7472 | continue; | |
7473 | } | |
23860348 | 7474 | break; /* Here to retransmit. */ |
c906108c SS |
7475 | } |
7476 | ||
7477 | #if 0 | |
7478 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7479 | able to get out next time we call QUIT, without anything as |
7480 | violent as interrupt_query. If we want to provide a way out of | |
7481 | here without getting to the next QUIT, it should be based on | |
7482 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7483 | if (quit_flag) |
7484 | { | |
7485 | quit_flag = 0; | |
7486 | interrupt_query (); | |
7487 | } | |
7488 | #endif | |
7489 | } | |
a6f3e723 | 7490 | return 0; |
c906108c SS |
7491 | } |
7492 | ||
6d820c5c DJ |
7493 | /* Come here after finding the start of a frame when we expected an |
7494 | ack. Do our best to discard the rest of this packet. */ | |
7495 | ||
7496 | static void | |
7497 | skip_frame (void) | |
7498 | { | |
7499 | int c; | |
7500 | ||
7501 | while (1) | |
7502 | { | |
7503 | c = readchar (remote_timeout); | |
7504 | switch (c) | |
7505 | { | |
7506 | case SERIAL_TIMEOUT: | |
7507 | /* Nothing we can do. */ | |
7508 | return; | |
7509 | case '#': | |
7510 | /* Discard the two bytes of checksum and stop. */ | |
7511 | c = readchar (remote_timeout); | |
7512 | if (c >= 0) | |
7513 | c = readchar (remote_timeout); | |
7514 | ||
7515 | return; | |
7516 | case '*': /* Run length encoding. */ | |
7517 | /* Discard the repeat count. */ | |
7518 | c = readchar (remote_timeout); | |
7519 | if (c < 0) | |
7520 | return; | |
7521 | break; | |
7522 | default: | |
7523 | /* A regular character. */ | |
7524 | break; | |
7525 | } | |
7526 | } | |
7527 | } | |
7528 | ||
c906108c | 7529 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7530 | into *BUF, verifying the checksum, length, and handling run-length |
7531 | compression. NUL terminate the buffer. If there is not enough room, | |
7532 | expand *BUF using xrealloc. | |
c906108c | 7533 | |
c2d11a7d JM |
7534 | Returns -1 on error, number of characters in buffer (ignoring the |
7535 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7536 | SERIAL status indications). */ |
c2d11a7d JM |
7537 | |
7538 | static long | |
6d820c5c DJ |
7539 | read_frame (char **buf_p, |
7540 | long *sizeof_buf) | |
c906108c SS |
7541 | { |
7542 | unsigned char csum; | |
c2d11a7d | 7543 | long bc; |
c906108c | 7544 | int c; |
6d820c5c | 7545 | char *buf = *buf_p; |
a6f3e723 | 7546 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7547 | |
7548 | csum = 0; | |
c2d11a7d | 7549 | bc = 0; |
c906108c SS |
7550 | |
7551 | while (1) | |
7552 | { | |
7553 | c = readchar (remote_timeout); | |
c906108c SS |
7554 | switch (c) |
7555 | { | |
7556 | case SERIAL_TIMEOUT: | |
7557 | if (remote_debug) | |
0f71a2f6 | 7558 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7559 | return -1; |
c906108c SS |
7560 | case '$': |
7561 | if (remote_debug) | |
0f71a2f6 JM |
7562 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7563 | gdb_stdlog); | |
23860348 | 7564 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7565 | case '#': |
7566 | { | |
7567 | unsigned char pktcsum; | |
e1b09194 AC |
7568 | int check_0 = 0; |
7569 | int check_1 = 0; | |
c906108c | 7570 | |
c2d11a7d | 7571 | buf[bc] = '\0'; |
c906108c | 7572 | |
e1b09194 AC |
7573 | check_0 = readchar (remote_timeout); |
7574 | if (check_0 >= 0) | |
7575 | check_1 = readchar (remote_timeout); | |
802188a7 | 7576 | |
e1b09194 AC |
7577 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7578 | { | |
7579 | if (remote_debug) | |
2bc416ba | 7580 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7581 | gdb_stdlog); |
e1b09194 AC |
7582 | return -1; |
7583 | } | |
7584 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7585 | { |
7586 | if (remote_debug) | |
2bc416ba | 7587 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7588 | gdb_stdlog); |
40e3f985 FN |
7589 | return -1; |
7590 | } | |
c906108c | 7591 | |
a6f3e723 SL |
7592 | /* Don't recompute the checksum; with no ack packets we |
7593 | don't have any way to indicate a packet retransmission | |
7594 | is necessary. */ | |
7595 | if (rs->noack_mode) | |
7596 | return bc; | |
7597 | ||
e1b09194 | 7598 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7599 | if (csum == pktcsum) |
c2d11a7d | 7600 | return bc; |
c906108c | 7601 | |
c5aa993b | 7602 | if (remote_debug) |
c906108c | 7603 | { |
6e5abd65 PA |
7604 | struct cleanup *old_chain; |
7605 | char *str; | |
7606 | ||
7607 | str = escape_buffer (buf, bc); | |
7608 | old_chain = make_cleanup (xfree, str); | |
7609 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7610 | "Bad checksum, sentsum=0x%x, " |
7611 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7612 | pktcsum, csum, str); |
7613 | do_cleanups (old_chain); | |
c906108c | 7614 | } |
c2d11a7d | 7615 | /* Number of characters in buffer ignoring trailing |
23860348 | 7616 | NULL. */ |
c2d11a7d | 7617 | return -1; |
c906108c | 7618 | } |
23860348 | 7619 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7620 | { |
7621 | int repeat; | |
c906108c | 7622 | |
a744cf53 | 7623 | csum += c; |
b4501125 AC |
7624 | c = readchar (remote_timeout); |
7625 | csum += c; | |
23860348 | 7626 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7627 | |
23860348 | 7628 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7629 | |
6d820c5c | 7630 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7631 | { |
6d820c5c DJ |
7632 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7633 | { | |
7634 | /* Make some more room in the buffer. */ | |
7635 | *sizeof_buf += repeat; | |
7636 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7637 | buf = *buf_p; | |
7638 | } | |
7639 | ||
c2d11a7d JM |
7640 | memset (&buf[bc], buf[bc - 1], repeat); |
7641 | bc += repeat; | |
c2c6d25f JM |
7642 | continue; |
7643 | } | |
7644 | ||
c2d11a7d | 7645 | buf[bc] = '\0'; |
6d820c5c | 7646 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7647 | return -1; |
c2c6d25f | 7648 | } |
c906108c | 7649 | default: |
6d820c5c | 7650 | if (bc >= *sizeof_buf - 1) |
c906108c | 7651 | { |
6d820c5c DJ |
7652 | /* Make some more room in the buffer. */ |
7653 | *sizeof_buf *= 2; | |
7654 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7655 | buf = *buf_p; | |
c906108c SS |
7656 | } |
7657 | ||
6d820c5c DJ |
7658 | buf[bc++] = c; |
7659 | csum += c; | |
7660 | continue; | |
c906108c SS |
7661 | } |
7662 | } | |
7663 | } | |
7664 | ||
7665 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7666 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7667 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7668 | rather than timing out; this is used (in synchronous mode) to wait | |
7669 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7670 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7671 | don't have to change all the calls to getpkt to deal with the | |
7672 | return value, because at the moment I don't know what the right | |
23860348 | 7673 | thing to do it for those. */ |
c906108c | 7674 | void |
6d820c5c DJ |
7675 | getpkt (char **buf, |
7676 | long *sizeof_buf, | |
c2d11a7d | 7677 | int forever) |
d9fcf2fb JM |
7678 | { |
7679 | int timed_out; | |
7680 | ||
7681 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7682 | } | |
7683 | ||
7684 | ||
7685 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7686 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7687 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7688 | rather than timing out; this is used (in synchronous mode) to wait | |
7689 | for a target that is is executing user code to stop. If FOREVER == | |
7690 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7691 | indication of this to the caller. Otherwise return the number of |
7692 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7693 | enough reason to return to the caller. *IS_NOTIF is an output |
7694 | boolean that indicates whether *BUF holds a notification or not | |
7695 | (a regular packet). */ | |
74531fed | 7696 | |
3172dc30 | 7697 | static int |
74531fed | 7698 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7699 | int expecting_notif, int *is_notif) |
c906108c | 7700 | { |
2d717e4f | 7701 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7702 | int c; |
7703 | int tries; | |
7704 | int timeout; | |
df4b58fe | 7705 | int val = -1; |
c906108c | 7706 | |
2d717e4f DJ |
7707 | /* We're reading a new response. Make sure we don't look at a |
7708 | previously cached response. */ | |
7709 | rs->cached_wait_status = 0; | |
7710 | ||
6d820c5c | 7711 | strcpy (*buf, "timeout"); |
c906108c SS |
7712 | |
7713 | if (forever) | |
74531fed PA |
7714 | timeout = watchdog > 0 ? watchdog : -1; |
7715 | else if (expecting_notif) | |
7716 | timeout = 0; /* There should already be a char in the buffer. If | |
7717 | not, bail out. */ | |
c906108c SS |
7718 | else |
7719 | timeout = remote_timeout; | |
7720 | ||
7721 | #define MAX_TRIES 3 | |
7722 | ||
74531fed PA |
7723 | /* Process any number of notifications, and then return when |
7724 | we get a packet. */ | |
7725 | for (;;) | |
c906108c | 7726 | { |
d9c43928 | 7727 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7728 | times. */ |
7729 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7730 | { |
74531fed PA |
7731 | /* This can loop forever if the remote side sends us |
7732 | characters continuously, but if it pauses, we'll get | |
7733 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7734 | we'll count that as a retry. | |
7735 | ||
7736 | Note that even when forever is set, we will only wait | |
7737 | forever prior to the start of a packet. After that, we | |
7738 | expect characters to arrive at a brisk pace. They should | |
7739 | show up within remote_timeout intervals. */ | |
7740 | do | |
7741 | c = readchar (timeout); | |
7742 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7743 | |
7744 | if (c == SERIAL_TIMEOUT) | |
7745 | { | |
74531fed PA |
7746 | if (expecting_notif) |
7747 | return -1; /* Don't complain, it's normal to not get | |
7748 | anything in this case. */ | |
7749 | ||
23860348 | 7750 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7751 | { |
2acceee2 | 7752 | QUIT; |
78a095c3 | 7753 | remote_unpush_target (); |
598d3636 JK |
7754 | throw_error (TARGET_CLOSE_ERROR, |
7755 | _("Watchdog timeout has expired. " | |
7756 | "Target detached.")); | |
c906108c | 7757 | } |
c906108c | 7758 | if (remote_debug) |
0f71a2f6 | 7759 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7760 | } |
74531fed PA |
7761 | else |
7762 | { | |
7763 | /* We've found the start of a packet or notification. | |
7764 | Now collect the data. */ | |
7765 | val = read_frame (buf, sizeof_buf); | |
7766 | if (val >= 0) | |
7767 | break; | |
7768 | } | |
7769 | ||
c33e31fd | 7770 | remote_serial_write ("-", 1); |
c906108c | 7771 | } |
c906108c | 7772 | |
74531fed PA |
7773 | if (tries > MAX_TRIES) |
7774 | { | |
7775 | /* We have tried hard enough, and just can't receive the | |
7776 | packet/notification. Give up. */ | |
7777 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7778 | |
74531fed PA |
7779 | /* Skip the ack char if we're in no-ack mode. */ |
7780 | if (!rs->noack_mode) | |
c33e31fd | 7781 | remote_serial_write ("+", 1); |
74531fed PA |
7782 | return -1; |
7783 | } | |
c906108c | 7784 | |
74531fed PA |
7785 | /* If we got an ordinary packet, return that to our caller. */ |
7786 | if (c == '$') | |
c906108c SS |
7787 | { |
7788 | if (remote_debug) | |
43e526b9 | 7789 | { |
6e5abd65 PA |
7790 | struct cleanup *old_chain; |
7791 | char *str; | |
7792 | ||
7793 | str = escape_buffer (*buf, val); | |
7794 | old_chain = make_cleanup (xfree, str); | |
7795 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7796 | do_cleanups (old_chain); | |
43e526b9 | 7797 | } |
a6f3e723 SL |
7798 | |
7799 | /* Skip the ack char if we're in no-ack mode. */ | |
7800 | if (!rs->noack_mode) | |
c33e31fd | 7801 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7802 | if (is_notif != NULL) |
7803 | *is_notif = 0; | |
0876f84a | 7804 | return val; |
c906108c SS |
7805 | } |
7806 | ||
74531fed PA |
7807 | /* If we got a notification, handle it, and go back to looking |
7808 | for a packet. */ | |
7809 | else | |
7810 | { | |
7811 | gdb_assert (c == '%'); | |
7812 | ||
7813 | if (remote_debug) | |
7814 | { | |
6e5abd65 PA |
7815 | struct cleanup *old_chain; |
7816 | char *str; | |
7817 | ||
7818 | str = escape_buffer (*buf, val); | |
7819 | old_chain = make_cleanup (xfree, str); | |
7820 | fprintf_unfiltered (gdb_stdlog, | |
7821 | " Notification received: %s\n", | |
7822 | str); | |
7823 | do_cleanups (old_chain); | |
74531fed | 7824 | } |
fee9eda9 YQ |
7825 | if (is_notif != NULL) |
7826 | *is_notif = 1; | |
c906108c | 7827 | |
5965e028 | 7828 | handle_notification (rs->notif_state, *buf); |
c906108c | 7829 | |
74531fed | 7830 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7831 | |
74531fed | 7832 | if (expecting_notif) |
fee9eda9 | 7833 | return val; |
74531fed PA |
7834 | } |
7835 | } | |
7836 | } | |
7837 | ||
7838 | static int | |
7839 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7840 | { | |
fee9eda9 | 7841 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7842 | } |
7843 | ||
7844 | static int | |
fee9eda9 YQ |
7845 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7846 | int *is_notif) | |
74531fed | 7847 | { |
fee9eda9 YQ |
7848 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7849 | is_notif); | |
c906108c | 7850 | } |
74531fed | 7851 | |
c906108c SS |
7852 | \f |
7853 | static void | |
7d85a9c0 | 7854 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7855 | { |
0fdf84ca PA |
7856 | |
7857 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7858 | aren't on speaking terms with the remote system. */ |
492d29ea | 7859 | TRY |
0fdf84ca PA |
7860 | { |
7861 | putpkt ("k"); | |
7862 | } | |
492d29ea | 7863 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
7864 | { |
7865 | if (ex.error == TARGET_CLOSE_ERROR) | |
7866 | { | |
7867 | /* If we got an (EOF) error that caused the target | |
7868 | to go away, then we're done, that's what we wanted. | |
7869 | "k" is susceptible to cause a premature EOF, given | |
7870 | that the remote server isn't actually required to | |
7871 | reply to "k", and it can happen that it doesn't | |
7872 | even get to reply ACK to the "k". */ | |
7873 | return; | |
7874 | } | |
7875 | ||
7876 | /* Otherwise, something went wrong. We didn't actually kill | |
7877 | the target. Just propagate the exception, and let the | |
7878 | user or higher layers decide what to do. */ | |
7879 | throw_exception (ex); | |
7880 | } | |
492d29ea | 7881 | END_CATCH |
43ff13b4 | 7882 | |
0fdf84ca PA |
7883 | /* We've killed the remote end, we get to mourn it. Since this is |
7884 | target remote, single-process, mourning the inferior also | |
7885 | unpushes remote_ops. */ | |
43ff13b4 JM |
7886 | target_mourn_inferior (); |
7887 | } | |
7888 | ||
82f73884 PA |
7889 | static int |
7890 | remote_vkill (int pid, struct remote_state *rs) | |
7891 | { | |
4082afcc | 7892 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
7893 | return -1; |
7894 | ||
7895 | /* Tell the remote target to detach. */ | |
bba74b36 | 7896 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7897 | putpkt (rs->buf); |
7898 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7899 | ||
4082afcc PA |
7900 | switch (packet_ok (rs->buf, |
7901 | &remote_protocol_packets[PACKET_vKill])) | |
7902 | { | |
7903 | case PACKET_OK: | |
7904 | return 0; | |
7905 | case PACKET_ERROR: | |
7906 | return 1; | |
7907 | case PACKET_UNKNOWN: | |
7908 | return -1; | |
7909 | default: | |
7910 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7911 | } | |
82f73884 PA |
7912 | } |
7913 | ||
7914 | static void | |
7d85a9c0 | 7915 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7916 | { |
7917 | int res; | |
7918 | int pid = ptid_get_pid (inferior_ptid); | |
7919 | struct remote_state *rs = get_remote_state (); | |
7920 | ||
7921 | res = remote_vkill (pid, rs); | |
901f9912 | 7922 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7923 | { |
7924 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7925 | to specify the pid. */ | |
7926 | ||
7927 | putpkt ("k"); | |
7928 | #if 0 | |
7929 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7930 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7931 | res = 1; | |
7932 | #else | |
7933 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7934 | we do or not. For the existing stubs, kill is a noop. */ | |
7935 | res = 0; | |
7936 | #endif | |
7937 | } | |
7938 | ||
7939 | if (res != 0) | |
7940 | error (_("Can't kill process")); | |
7941 | ||
82f73884 PA |
7942 | target_mourn_inferior (); |
7943 | } | |
7944 | ||
c906108c | 7945 | static void |
20f796c9 | 7946 | remote_mourn (struct target_ops *target) |
c906108c SS |
7947 | { |
7948 | unpush_target (target); | |
ce5ce7ed | 7949 | |
8a2492ee PA |
7950 | /* remote_close takes care of doing most of the clean up. */ |
7951 | generic_mourn_inferior (); | |
c906108c SS |
7952 | } |
7953 | ||
2d717e4f | 7954 | static void |
20f796c9 | 7955 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
7956 | { |
7957 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7958 | |
e24a49d8 PA |
7959 | /* In case we got here due to an error, but we're going to stay |
7960 | connected. */ | |
7961 | rs->waiting_for_stop_reply = 0; | |
7962 | ||
dc1981d7 PA |
7963 | /* If the current general thread belonged to the process we just |
7964 | detached from or has exited, the remote side current general | |
7965 | thread becomes undefined. Considering a case like this: | |
7966 | ||
7967 | - We just got here due to a detach. | |
7968 | - The process that we're detaching from happens to immediately | |
7969 | report a global breakpoint being hit in non-stop mode, in the | |
7970 | same thread we had selected before. | |
7971 | - GDB attaches to this process again. | |
7972 | - This event happens to be the next event we handle. | |
7973 | ||
7974 | GDB would consider that the current general thread didn't need to | |
7975 | be set on the stub side (with Hg), since for all it knew, | |
7976 | GENERAL_THREAD hadn't changed. | |
7977 | ||
7978 | Notice that although in all-stop mode, the remote server always | |
7979 | sets the current thread to the thread reporting the stop event, | |
7980 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7981 | not* change the current thread when reporting a breakpoint hit, | |
7982 | due to the decoupling of event reporting and event handling. | |
7983 | ||
7984 | To keep things simple, we always invalidate our notion of the | |
7985 | current thread. */ | |
47f8a51d | 7986 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 7987 | |
2d717e4f DJ |
7988 | /* Unlike "target remote", we do not want to unpush the target; then |
7989 | the next time the user says "run", we won't be connected. */ | |
7990 | ||
48aa3c27 PA |
7991 | /* Call common code to mark the inferior as not running. */ |
7992 | generic_mourn_inferior (); | |
7993 | ||
d729566a | 7994 | if (!have_inferiors ()) |
2d717e4f | 7995 | { |
82f73884 PA |
7996 | if (!remote_multi_process_p (rs)) |
7997 | { | |
7998 | /* Check whether the target is running now - some remote stubs | |
7999 | automatically restart after kill. */ | |
8000 | putpkt ("?"); | |
8001 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8002 | ||
8003 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8004 | { | |
3e43a32a MS |
8005 | /* Assume that the target has been restarted. Set |
8006 | inferior_ptid so that bits of core GDB realizes | |
8007 | there's something here, e.g., so that the user can | |
8008 | say "kill" again. */ | |
82f73884 PA |
8009 | inferior_ptid = magic_null_ptid; |
8010 | } | |
82f73884 | 8011 | } |
2d717e4f DJ |
8012 | } |
8013 | } | |
c906108c | 8014 | |
03583c20 | 8015 | static int |
2bfc0540 | 8016 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8017 | { |
4082afcc | 8018 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8019 | } |
8020 | ||
8021 | static void | |
8022 | extended_remote_disable_randomization (int val) | |
8023 | { | |
8024 | struct remote_state *rs = get_remote_state (); | |
8025 | char *reply; | |
8026 | ||
bba74b36 YQ |
8027 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8028 | val); | |
03583c20 UW |
8029 | putpkt (rs->buf); |
8030 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8031 | if (*reply == '\0') | |
8032 | error (_("Target does not support QDisableRandomization.")); | |
8033 | if (strcmp (reply, "OK") != 0) | |
8034 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8035 | } | |
8036 | ||
2d717e4f DJ |
8037 | static int |
8038 | extended_remote_run (char *args) | |
8039 | { | |
8040 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8041 | int len; |
c906108c | 8042 | |
2d717e4f DJ |
8043 | /* If the user has disabled vRun support, or we have detected that |
8044 | support is not available, do not try it. */ | |
4082afcc | 8045 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8046 | return -1; |
424163ea | 8047 | |
2d717e4f DJ |
8048 | strcpy (rs->buf, "vRun;"); |
8049 | len = strlen (rs->buf); | |
c906108c | 8050 | |
2d717e4f DJ |
8051 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8052 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8053 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8054 | strlen (remote_exec_file)); | |
2d717e4f | 8055 | |
d1a41061 | 8056 | gdb_assert (args != NULL); |
2d717e4f DJ |
8057 | if (*args) |
8058 | { | |
8059 | struct cleanup *back_to; | |
8060 | int i; | |
8061 | char **argv; | |
8062 | ||
d1a41061 | 8063 | argv = gdb_buildargv (args); |
6e366df1 | 8064 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8065 | for (i = 0; argv[i] != NULL; i++) |
8066 | { | |
8067 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8068 | error (_("Argument list too long for run packet")); | |
8069 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8070 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8071 | strlen (argv[i])); | |
2d717e4f DJ |
8072 | } |
8073 | do_cleanups (back_to); | |
8074 | } | |
8075 | ||
8076 | rs->buf[len++] = '\0'; | |
8077 | ||
8078 | putpkt (rs->buf); | |
8079 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8080 | ||
4082afcc | 8081 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8082 | { |
4082afcc | 8083 | case PACKET_OK: |
3405876a | 8084 | /* We have a wait response. All is well. */ |
2d717e4f | 8085 | return 0; |
4082afcc PA |
8086 | case PACKET_UNKNOWN: |
8087 | return -1; | |
8088 | case PACKET_ERROR: | |
2d717e4f DJ |
8089 | if (remote_exec_file[0] == '\0') |
8090 | error (_("Running the default executable on the remote target failed; " | |
8091 | "try \"set remote exec-file\"?")); | |
8092 | else | |
8093 | error (_("Running \"%s\" on the remote target failed"), | |
8094 | remote_exec_file); | |
4082afcc PA |
8095 | default: |
8096 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8097 | } |
c906108c SS |
8098 | } |
8099 | ||
2d717e4f DJ |
8100 | /* In the extended protocol we want to be able to do things like |
8101 | "run" and have them basically work as expected. So we need | |
8102 | a special create_inferior function. We support changing the | |
8103 | executable file and the command line arguments, but not the | |
8104 | environment. */ | |
8105 | ||
43ff13b4 | 8106 | static void |
77a19445 TT |
8107 | extended_remote_create_inferior (struct target_ops *ops, |
8108 | char *exec_file, char *args, | |
8109 | char **env, int from_tty) | |
43ff13b4 | 8110 | { |
3405876a PA |
8111 | int run_worked; |
8112 | char *stop_reply; | |
8113 | struct remote_state *rs = get_remote_state (); | |
8114 | ||
43ff13b4 | 8115 | /* If running asynchronously, register the target file descriptor |
23860348 | 8116 | with the event loop. */ |
75c99385 | 8117 | if (target_can_async_p ()) |
6a3753b3 | 8118 | target_async (1); |
43ff13b4 | 8119 | |
03583c20 | 8120 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8121 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8122 | extended_remote_disable_randomization (disable_randomization); |
8123 | ||
43ff13b4 | 8124 | /* Now restart the remote server. */ |
3405876a PA |
8125 | run_worked = extended_remote_run (args) != -1; |
8126 | if (!run_worked) | |
2d717e4f DJ |
8127 | { |
8128 | /* vRun was not supported. Fail if we need it to do what the | |
8129 | user requested. */ | |
8130 | if (remote_exec_file[0]) | |
8131 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8132 | if (args[0]) | |
8133 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8134 | |
2d717e4f DJ |
8135 | /* Fall back to "R". */ |
8136 | extended_remote_restart (); | |
8137 | } | |
424163ea | 8138 | |
6c95b8df PA |
8139 | if (!have_inferiors ()) |
8140 | { | |
8141 | /* Clean up from the last time we ran, before we mark the target | |
8142 | running again. This will mark breakpoints uninserted, and | |
8143 | get_offsets may insert breakpoints. */ | |
8144 | init_thread_list (); | |
8145 | init_wait_for_inferior (); | |
8146 | } | |
45280a52 | 8147 | |
3405876a PA |
8148 | /* vRun's success return is a stop reply. */ |
8149 | stop_reply = run_worked ? rs->buf : NULL; | |
8150 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8151 | |
2d717e4f DJ |
8152 | /* Get updated offsets, if the stub uses qOffsets. */ |
8153 | get_offsets (); | |
2d717e4f | 8154 | } |
c906108c | 8155 | \f |
c5aa993b | 8156 | |
b775012e LM |
8157 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8158 | the list of conditions (in agent expression bytecode format), if any, the | |
8159 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8160 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8161 | |
8162 | static int | |
8163 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8164 | struct bp_target_info *bp_tgt, char *buf, |
8165 | char *buf_end) | |
b775012e LM |
8166 | { |
8167 | struct agent_expr *aexpr = NULL; | |
8168 | int i, ix; | |
8169 | char *pkt; | |
8170 | char *buf_start = buf; | |
8171 | ||
8172 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8173 | return 0; | |
8174 | ||
8175 | buf += strlen (buf); | |
bba74b36 | 8176 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8177 | buf++; |
8178 | ||
8179 | /* Send conditions to the target and free the vector. */ | |
8180 | for (ix = 0; | |
8181 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8182 | ix++) | |
8183 | { | |
bba74b36 | 8184 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8185 | buf += strlen (buf); |
8186 | for (i = 0; i < aexpr->len; ++i) | |
8187 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8188 | *buf = '\0'; | |
8189 | } | |
b775012e LM |
8190 | return 0; |
8191 | } | |
8192 | ||
d3ce09f5 SS |
8193 | static void |
8194 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8195 | struct bp_target_info *bp_tgt, char *buf) | |
8196 | { | |
8197 | struct agent_expr *aexpr = NULL; | |
8198 | int i, ix; | |
8199 | ||
8200 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8201 | return; | |
8202 | ||
8203 | buf += strlen (buf); | |
8204 | ||
8205 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8206 | buf += strlen (buf); | |
8207 | ||
8208 | /* Concatenate all the agent expressions that are commands into the | |
8209 | cmds parameter. */ | |
8210 | for (ix = 0; | |
8211 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8212 | ix++) | |
8213 | { | |
8214 | sprintf (buf, "X%x,", aexpr->len); | |
8215 | buf += strlen (buf); | |
8216 | for (i = 0; i < aexpr->len; ++i) | |
8217 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8218 | *buf = '\0'; | |
8219 | } | |
d3ce09f5 SS |
8220 | } |
8221 | ||
8181d85f DJ |
8222 | /* Insert a breakpoint. On targets that have software breakpoint |
8223 | support, we ask the remote target to do the work; on targets | |
8224 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8225 | |
8226 | static int | |
3db08215 MM |
8227 | remote_insert_breakpoint (struct target_ops *ops, |
8228 | struct gdbarch *gdbarch, | |
a6d9a66e | 8229 | struct bp_target_info *bp_tgt) |
c906108c | 8230 | { |
d471ea57 AC |
8231 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8232 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8233 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8234 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8235 | |
4082afcc | 8236 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8237 | { |
0d5ed153 | 8238 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8239 | struct remote_state *rs; |
bba74b36 | 8240 | char *p, *endbuf; |
7c0f6dcc | 8241 | int bpsize; |
b775012e | 8242 | struct condition_list *cond = NULL; |
4fff2411 | 8243 | |
28439a30 PA |
8244 | /* Make sure the remote is pointing at the right process, if |
8245 | necessary. */ | |
8246 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8247 | set_general_process (); | |
8248 | ||
a1dcb23a | 8249 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8250 | |
8251 | rs = get_remote_state (); | |
8252 | p = rs->buf; | |
bba74b36 | 8253 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8254 | |
96baa820 JM |
8255 | *(p++) = 'Z'; |
8256 | *(p++) = '0'; | |
8257 | *(p++) = ','; | |
7c0f6dcc | 8258 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8259 | p += hexnumstr (p, addr); |
bba74b36 | 8260 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8261 | |
efcc2da7 | 8262 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8263 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8264 | |
78eff0ec | 8265 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8266 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8267 | ||
6d820c5c DJ |
8268 | putpkt (rs->buf); |
8269 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8270 | |
6d820c5c | 8271 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8272 | { |
d471ea57 AC |
8273 | case PACKET_ERROR: |
8274 | return -1; | |
8275 | case PACKET_OK: | |
7c0f6dcc JL |
8276 | bp_tgt->placed_address = addr; |
8277 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8278 | return 0; |
8279 | case PACKET_UNKNOWN: | |
8280 | break; | |
96baa820 JM |
8281 | } |
8282 | } | |
c906108c | 8283 | |
0000e5cc PA |
8284 | /* If this breakpoint has target-side commands but this stub doesn't |
8285 | support Z0 packets, throw error. */ | |
8286 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8287 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8288 | Target doesn't support breakpoints that have target side commands.")); | |
8289 | ||
3db08215 | 8290 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8291 | } |
8292 | ||
8293 | static int | |
3db08215 MM |
8294 | remote_remove_breakpoint (struct target_ops *ops, |
8295 | struct gdbarch *gdbarch, | |
a6d9a66e | 8296 | struct bp_target_info *bp_tgt) |
c906108c | 8297 | { |
8181d85f | 8298 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8299 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8300 | |
4082afcc | 8301 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8302 | { |
6d820c5c | 8303 | char *p = rs->buf; |
bba74b36 | 8304 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8305 | |
28439a30 PA |
8306 | /* Make sure the remote is pointing at the right process, if |
8307 | necessary. */ | |
8308 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8309 | set_general_process (); | |
8310 | ||
96baa820 JM |
8311 | *(p++) = 'z'; |
8312 | *(p++) = '0'; | |
8313 | *(p++) = ','; | |
8314 | ||
8181d85f DJ |
8315 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8316 | p += hexnumstr (p, addr); | |
bba74b36 | 8317 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8318 | |
6d820c5c DJ |
8319 | putpkt (rs->buf); |
8320 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8321 | |
6d820c5c | 8322 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8323 | } |
8324 | ||
3db08215 | 8325 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8326 | } |
8327 | ||
d471ea57 AC |
8328 | static int |
8329 | watchpoint_to_Z_packet (int type) | |
8330 | { | |
8331 | switch (type) | |
8332 | { | |
8333 | case hw_write: | |
bb858e6a | 8334 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8335 | break; |
8336 | case hw_read: | |
bb858e6a | 8337 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8338 | break; |
8339 | case hw_access: | |
bb858e6a | 8340 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8341 | break; |
8342 | default: | |
8e65ff28 | 8343 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8344 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8345 | } |
8346 | } | |
8347 | ||
3c3bea1c | 8348 | static int |
7bb99c53 TT |
8349 | remote_insert_watchpoint (struct target_ops *self, |
8350 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8351 | struct expression *cond) |
96baa820 | 8352 | { |
d01949b6 | 8353 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8354 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8355 | char *p; |
d471ea57 | 8356 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8357 | |
4082afcc | 8358 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8359 | return 1; |
802188a7 | 8360 | |
28439a30 PA |
8361 | /* Make sure the remote is pointing at the right process, if |
8362 | necessary. */ | |
8363 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8364 | set_general_process (); | |
8365 | ||
bba74b36 | 8366 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8367 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8368 | addr = remote_address_masked (addr); |
8369 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8370 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8371 | |
6d820c5c DJ |
8372 | putpkt (rs->buf); |
8373 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8374 | |
6d820c5c | 8375 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8376 | { |
8377 | case PACKET_ERROR: | |
d471ea57 | 8378 | return -1; |
85d721b8 PA |
8379 | case PACKET_UNKNOWN: |
8380 | return 1; | |
d471ea57 AC |
8381 | case PACKET_OK: |
8382 | return 0; | |
8383 | } | |
8e65ff28 | 8384 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8385 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8386 | } |
8387 | ||
283002cf MR |
8388 | static int |
8389 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8390 | CORE_ADDR start, int length) | |
8391 | { | |
8392 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8393 | ||
8394 | return diff < length; | |
8395 | } | |
8396 | ||
d471ea57 | 8397 | |
3c3bea1c | 8398 | static int |
11b5219a TT |
8399 | remote_remove_watchpoint (struct target_ops *self, |
8400 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8401 | struct expression *cond) |
96baa820 | 8402 | { |
d01949b6 | 8403 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8404 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8405 | char *p; |
d471ea57 AC |
8406 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8407 | ||
4082afcc | 8408 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8409 | return -1; |
802188a7 | 8410 | |
28439a30 PA |
8411 | /* Make sure the remote is pointing at the right process, if |
8412 | necessary. */ | |
8413 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8414 | set_general_process (); | |
8415 | ||
bba74b36 | 8416 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8417 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8418 | addr = remote_address_masked (addr); |
8419 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8420 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8421 | putpkt (rs->buf); |
8422 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8423 | |
6d820c5c | 8424 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8425 | { |
8426 | case PACKET_ERROR: | |
8427 | case PACKET_UNKNOWN: | |
8428 | return -1; | |
8429 | case PACKET_OK: | |
8430 | return 0; | |
8431 | } | |
8e65ff28 | 8432 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8433 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8434 | } |
8435 | ||
3c3bea1c | 8436 | |
501eef12 | 8437 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8438 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8439 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8440 | |
480a3f21 | 8441 | static int |
31568a15 TT |
8442 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8443 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8444 | { |
8445 | if (remote_hw_watchpoint_length_limit == 0) | |
8446 | return 0; | |
8447 | else if (remote_hw_watchpoint_length_limit < 0) | |
8448 | return 1; | |
8449 | else if (len <= remote_hw_watchpoint_length_limit) | |
8450 | return 1; | |
8451 | else | |
8452 | return 0; | |
8453 | } | |
8454 | ||
b9362cc7 | 8455 | static int |
5461485a TT |
8456 | remote_check_watch_resources (struct target_ops *self, |
8457 | int type, int cnt, int ot) | |
96baa820 | 8458 | { |
3c3bea1c GS |
8459 | if (type == bp_hardware_breakpoint) |
8460 | { | |
8461 | if (remote_hw_breakpoint_limit == 0) | |
8462 | return 0; | |
501eef12 AC |
8463 | else if (remote_hw_breakpoint_limit < 0) |
8464 | return 1; | |
3c3bea1c GS |
8465 | else if (cnt <= remote_hw_breakpoint_limit) |
8466 | return 1; | |
8467 | } | |
8468 | else | |
8469 | { | |
8470 | if (remote_hw_watchpoint_limit == 0) | |
8471 | return 0; | |
501eef12 AC |
8472 | else if (remote_hw_watchpoint_limit < 0) |
8473 | return 1; | |
3c3bea1c GS |
8474 | else if (ot) |
8475 | return -1; | |
8476 | else if (cnt <= remote_hw_watchpoint_limit) | |
8477 | return 1; | |
8478 | } | |
8479 | return -1; | |
8480 | } | |
8481 | ||
f7e6eed5 PA |
8482 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
8483 | ||
8484 | static int | |
8485 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8486 | { | |
8487 | struct remote_state *rs = get_remote_state (); | |
8488 | ||
8489 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
8490 | } | |
8491 | ||
8492 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
8493 | remote. */ | |
8494 | ||
8495 | static int | |
8496 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8497 | { | |
8498 | struct remote_state *rs = get_remote_state (); | |
8499 | ||
8500 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
8501 | } | |
8502 | ||
8503 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
8504 | ||
8505 | static int | |
8506 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8507 | { | |
8508 | struct remote_state *rs = get_remote_state (); | |
8509 | ||
8510 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
8511 | } | |
8512 | ||
8513 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
8514 | remote. */ | |
8515 | ||
8516 | static int | |
8517 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8518 | { | |
8519 | struct remote_state *rs = get_remote_state (); | |
8520 | ||
8521 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
8522 | } | |
8523 | ||
b9362cc7 | 8524 | static int |
6a109b6b | 8525 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8526 | { |
ee154bee TT |
8527 | struct remote_state *rs = get_remote_state (); |
8528 | ||
f7e6eed5 | 8529 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
8530 | } |
8531 | ||
4aa7a7f5 JJ |
8532 | static int |
8533 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8534 | { |
ee154bee | 8535 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8536 | int rc = 0; |
a744cf53 | 8537 | |
6a109b6b | 8538 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8539 | { |
ee154bee | 8540 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8541 | rc = 1; |
8542 | } | |
8543 | ||
8544 | return rc; | |
3c3bea1c GS |
8545 | } |
8546 | ||
8547 | ||
8548 | static int | |
23a26771 | 8549 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8550 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8551 | { |
0d5ed153 | 8552 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8553 | struct remote_state *rs; |
bba74b36 | 8554 | char *p, *endbuf; |
dd61ec5c | 8555 | char *message; |
0d5ed153 | 8556 | int bpsize; |
802188a7 | 8557 | |
c8189ed1 | 8558 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8559 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8560 | |
0d5ed153 | 8561 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 8562 | |
4082afcc | 8563 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8564 | return -1; |
2bc416ba | 8565 | |
28439a30 PA |
8566 | /* Make sure the remote is pointing at the right process, if |
8567 | necessary. */ | |
8568 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8569 | set_general_process (); | |
8570 | ||
4fff2411 JZ |
8571 | rs = get_remote_state (); |
8572 | p = rs->buf; | |
bba74b36 | 8573 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8574 | |
96baa820 JM |
8575 | *(p++) = 'Z'; |
8576 | *(p++) = '1'; | |
8577 | *(p++) = ','; | |
802188a7 | 8578 | |
0d5ed153 | 8579 | addr = remote_address_masked (addr); |
96baa820 | 8580 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 8581 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 8582 | |
efcc2da7 | 8583 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 8584 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8585 | |
78eff0ec | 8586 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
8587 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8588 | ||
6d820c5c DJ |
8589 | putpkt (rs->buf); |
8590 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8591 | |
6d820c5c | 8592 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8593 | { |
8594 | case PACKET_ERROR: | |
dd61ec5c MW |
8595 | if (rs->buf[1] == '.') |
8596 | { | |
8597 | message = strchr (rs->buf + 2, '.'); | |
8598 | if (message) | |
0316657e | 8599 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8600 | } |
8601 | return -1; | |
d471ea57 AC |
8602 | case PACKET_UNKNOWN: |
8603 | return -1; | |
8604 | case PACKET_OK: | |
0d5ed153 MR |
8605 | bp_tgt->placed_address = addr; |
8606 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8607 | return 0; |
8608 | } | |
8e65ff28 | 8609 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8610 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8611 | } |
8612 | ||
d471ea57 | 8613 | |
802188a7 | 8614 | static int |
a64dc96c | 8615 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8616 | struct bp_target_info *bp_tgt) |
96baa820 | 8617 | { |
8181d85f | 8618 | CORE_ADDR addr; |
d01949b6 | 8619 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8620 | char *p = rs->buf; |
bba74b36 | 8621 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8622 | |
4082afcc | 8623 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8624 | return -1; |
802188a7 | 8625 | |
28439a30 PA |
8626 | /* Make sure the remote is pointing at the right process, if |
8627 | necessary. */ | |
8628 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8629 | set_general_process (); | |
8630 | ||
96baa820 JM |
8631 | *(p++) = 'z'; |
8632 | *(p++) = '1'; | |
8633 | *(p++) = ','; | |
802188a7 | 8634 | |
8181d85f | 8635 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8636 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8637 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8638 | |
6d820c5c DJ |
8639 | putpkt (rs->buf); |
8640 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8641 | |
6d820c5c | 8642 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8643 | { |
8644 | case PACKET_ERROR: | |
8645 | case PACKET_UNKNOWN: | |
8646 | return -1; | |
8647 | case PACKET_OK: | |
8648 | return 0; | |
8649 | } | |
8e65ff28 | 8650 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8651 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8652 | } |
96baa820 | 8653 | |
4a5e7a5b PA |
8654 | /* Verify memory using the "qCRC:" request. */ |
8655 | ||
8656 | static int | |
8657 | remote_verify_memory (struct target_ops *ops, | |
8658 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8659 | { | |
8660 | struct remote_state *rs = get_remote_state (); | |
8661 | unsigned long host_crc, target_crc; | |
8662 | char *tmp; | |
8663 | ||
936d2992 PA |
8664 | /* It doesn't make sense to use qCRC if the remote target is |
8665 | connected but not running. */ | |
8666 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
8667 | { | |
8668 | enum packet_result result; | |
28439a30 | 8669 | |
936d2992 PA |
8670 | /* Make sure the remote is pointing at the right process. */ |
8671 | set_general_process (); | |
4a5e7a5b | 8672 | |
936d2992 PA |
8673 | /* FIXME: assumes lma can fit into long. */ |
8674 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8675 | (long) lma, (long) size); | |
8676 | putpkt (rs->buf); | |
4a5e7a5b | 8677 | |
936d2992 PA |
8678 | /* Be clever; compute the host_crc before waiting for target |
8679 | reply. */ | |
8680 | host_crc = xcrc32 (data, size, 0xffffffff); | |
8681 | ||
8682 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 8683 | |
936d2992 PA |
8684 | result = packet_ok (rs->buf, |
8685 | &remote_protocol_packets[PACKET_qCRC]); | |
8686 | if (result == PACKET_ERROR) | |
8687 | return -1; | |
8688 | else if (result == PACKET_OK) | |
8689 | { | |
8690 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8691 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 8692 | |
936d2992 PA |
8693 | return (host_crc == target_crc); |
8694 | } | |
8695 | } | |
4a5e7a5b | 8696 | |
936d2992 | 8697 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
8698 | } |
8699 | ||
c906108c SS |
8700 | /* compare-sections command |
8701 | ||
8702 | With no arguments, compares each loadable section in the exec bfd | |
8703 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8704 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8705 | |
c906108c | 8706 | static void |
fba45db2 | 8707 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8708 | { |
8709 | asection *s; | |
c906108c | 8710 | struct cleanup *old_chain; |
948f8e3d | 8711 | gdb_byte *sectdata; |
ce359b09 | 8712 | const char *sectname; |
c906108c SS |
8713 | bfd_size_type size; |
8714 | bfd_vma lma; | |
8715 | int matched = 0; | |
8716 | int mismatched = 0; | |
4a5e7a5b | 8717 | int res; |
95cf3b38 | 8718 | int read_only = 0; |
c906108c SS |
8719 | |
8720 | if (!exec_bfd) | |
8a3fe4f8 | 8721 | error (_("command cannot be used without an exec file")); |
c906108c | 8722 | |
28439a30 PA |
8723 | /* Make sure the remote is pointing at the right process. */ |
8724 | set_general_process (); | |
8725 | ||
95cf3b38 DT |
8726 | if (args != NULL && strcmp (args, "-r") == 0) |
8727 | { | |
8728 | read_only = 1; | |
8729 | args = NULL; | |
8730 | } | |
8731 | ||
c5aa993b | 8732 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8733 | { |
8734 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8735 | continue; /* Skip non-loadable section. */ |
c906108c | 8736 | |
95cf3b38 DT |
8737 | if (read_only && (s->flags & SEC_READONLY) == 0) |
8738 | continue; /* Skip writeable sections */ | |
8739 | ||
2c500098 | 8740 | size = bfd_get_section_size (s); |
c906108c | 8741 | if (size == 0) |
0df8b418 | 8742 | continue; /* Skip zero-length section. */ |
c906108c | 8743 | |
ce359b09 | 8744 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8745 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8746 | continue; /* Not the section selected by user. */ |
c906108c | 8747 | |
0df8b418 | 8748 | matched = 1; /* Do this section. */ |
c906108c | 8749 | lma = s->lma; |
c906108c | 8750 | |
c906108c | 8751 | sectdata = xmalloc (size); |
b8c9b27d | 8752 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8753 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8754 | |
4a5e7a5b PA |
8755 | res = target_verify_memory (sectdata, lma, size); |
8756 | ||
8757 | if (res == -1) | |
5af949e3 | 8758 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8759 | paddress (target_gdbarch (), lma), |
8760 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8761 | |
5af949e3 | 8762 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8763 | paddress (target_gdbarch (), lma), |
8764 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8765 | if (res) |
c906108c SS |
8766 | printf_filtered ("matched.\n"); |
8767 | else | |
c5aa993b JM |
8768 | { |
8769 | printf_filtered ("MIS-MATCHED!\n"); | |
8770 | mismatched++; | |
8771 | } | |
c906108c SS |
8772 | |
8773 | do_cleanups (old_chain); | |
8774 | } | |
8775 | if (mismatched > 0) | |
936d2992 | 8776 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 8777 | the loaded file\n")); |
c906108c | 8778 | if (args && !matched) |
a3f17187 | 8779 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8780 | } |
8781 | ||
0e7f50da UW |
8782 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8783 | into remote target. The number of bytes written to the remote | |
8784 | target is returned, or -1 for error. */ | |
8785 | ||
9b409511 | 8786 | static enum target_xfer_status |
0e7f50da UW |
8787 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
8788 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 8789 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
8790 | struct packet_config *packet) |
8791 | { | |
8792 | int i, buf_len; | |
8793 | ULONGEST n; | |
0e7f50da UW |
8794 | struct remote_state *rs = get_remote_state (); |
8795 | int max_size = get_memory_write_packet_size (); | |
8796 | ||
8797 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8798 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8799 | |
8800 | /* Insert header. */ | |
8801 | i = snprintf (rs->buf, max_size, | |
8802 | "qXfer:%s:write:%s:%s:", | |
8803 | object_name, annex ? annex : "", | |
8804 | phex_nz (offset, sizeof offset)); | |
8805 | max_size -= (i + 1); | |
8806 | ||
8807 | /* Escape as much data as fits into rs->buf. */ | |
8808 | buf_len = remote_escape_output | |
bc20a4af | 8809 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8810 | |
8811 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8812 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8813 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8814 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8815 | |
8816 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
8817 | |
8818 | *xfered_len = n; | |
8819 | return TARGET_XFER_OK; | |
0e7f50da UW |
8820 | } |
8821 | ||
0876f84a DJ |
8822 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8823 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8824 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8825 | The number of bytes read may be less than LEN without indicating an | |
8826 | EOF. PACKET is checked and updated to indicate whether the remote | |
8827 | target supports this object. */ | |
8828 | ||
9b409511 | 8829 | static enum target_xfer_status |
0876f84a DJ |
8830 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
8831 | const char *annex, | |
8832 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 8833 | ULONGEST *xfered_len, |
0876f84a DJ |
8834 | struct packet_config *packet) |
8835 | { | |
0876f84a | 8836 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8837 | LONGEST i, n, packet_len; |
8838 | ||
8839 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8840 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8841 | |
8842 | /* Check whether we've cached an end-of-object packet that matches | |
8843 | this request. */ | |
8e88304f | 8844 | if (rs->finished_object) |
0876f84a | 8845 | { |
8e88304f TT |
8846 | if (strcmp (object_name, rs->finished_object) == 0 |
8847 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8848 | && offset == rs->finished_offset) | |
9b409511 YQ |
8849 | return TARGET_XFER_EOF; |
8850 | ||
0876f84a DJ |
8851 | |
8852 | /* Otherwise, we're now reading something different. Discard | |
8853 | the cache. */ | |
8e88304f TT |
8854 | xfree (rs->finished_object); |
8855 | xfree (rs->finished_annex); | |
8856 | rs->finished_object = NULL; | |
8857 | rs->finished_annex = NULL; | |
0876f84a DJ |
8858 | } |
8859 | ||
8860 | /* Request only enough to fit in a single packet. The actual data | |
8861 | may not, since we don't know how much of it will need to be escaped; | |
8862 | the target is free to respond with slightly less data. We subtract | |
8863 | five to account for the response type and the protocol frame. */ | |
8864 | n = min (get_remote_packet_size () - 5, len); | |
8865 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8866 | object_name, annex ? annex : "", | |
8867 | phex_nz (offset, sizeof offset), | |
8868 | phex_nz (n, sizeof n)); | |
8869 | i = putpkt (rs->buf); | |
8870 | if (i < 0) | |
2ed4b548 | 8871 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8872 | |
8873 | rs->buf[0] = '\0'; | |
8874 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8875 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8876 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8877 | |
8878 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8879 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8880 | ||
8881 | /* 'm' means there is (or at least might be) more data after this | |
8882 | batch. That does not make sense unless there's at least one byte | |
8883 | of data in this reply. */ | |
8884 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8885 | error (_("Remote qXfer reply contained no data.")); | |
8886 | ||
8887 | /* Got some data. */ | |
bc20a4af PA |
8888 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8889 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8890 | |
8891 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8892 | or possibly empty. If we have the final block of a non-empty |
8893 | object, record this fact to bypass a subsequent partial read. */ | |
8894 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8895 | { |
8e88304f TT |
8896 | rs->finished_object = xstrdup (object_name); |
8897 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8898 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8899 | } |
8900 | ||
9b409511 YQ |
8901 | if (i == 0) |
8902 | return TARGET_XFER_EOF; | |
8903 | else | |
8904 | { | |
8905 | *xfered_len = i; | |
8906 | return TARGET_XFER_OK; | |
8907 | } | |
0876f84a DJ |
8908 | } |
8909 | ||
9b409511 | 8910 | static enum target_xfer_status |
4b8a223f | 8911 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 8912 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
8913 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
8914 | ULONGEST *xfered_len) | |
c906108c | 8915 | { |
82f73884 | 8916 | struct remote_state *rs; |
c906108c | 8917 | int i; |
6d820c5c | 8918 | char *p2; |
1e3ff5ad | 8919 | char query_type; |
c906108c | 8920 | |
e6e4e701 | 8921 | set_remote_traceframe (); |
82f73884 PA |
8922 | set_general_thread (inferior_ptid); |
8923 | ||
8924 | rs = get_remote_state (); | |
8925 | ||
b2182ed2 | 8926 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8927 | if (object == TARGET_OBJECT_MEMORY) |
8928 | { | |
2d717e4f DJ |
8929 | /* If the remote target is connected but not running, we should |
8930 | pass this request down to a lower stratum (e.g. the executable | |
8931 | file). */ | |
8932 | if (!target_has_execution) | |
9b409511 | 8933 | return TARGET_XFER_EOF; |
2d717e4f | 8934 | |
21e3b9b9 | 8935 | if (writebuf != NULL) |
9b409511 | 8936 | return remote_write_bytes (offset, writebuf, len, xfered_len); |
21e3b9b9 | 8937 | else |
8acf9577 | 8938 | return remote_read_bytes (ops, offset, readbuf, len, xfered_len); |
21e3b9b9 DJ |
8939 | } |
8940 | ||
0df8b418 | 8941 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8942 | if (object == TARGET_OBJECT_SPU) |
8943 | { | |
8944 | if (readbuf) | |
8945 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
8946 | xfered_len, &remote_protocol_packets |
8947 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
8948 | else |
8949 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
8950 | xfered_len, &remote_protocol_packets |
8951 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
8952 | } |
8953 | ||
4aa995e1 PA |
8954 | /* Handle extra signal info using qxfer packets. */ |
8955 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8956 | { | |
8957 | if (readbuf) | |
8958 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 8959 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
8960 | [PACKET_qXfer_siginfo_read]); |
8961 | else | |
3e43a32a | 8962 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 8963 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
8964 | &remote_protocol_packets |
8965 | [PACKET_qXfer_siginfo_write]); | |
8966 | } | |
8967 | ||
0fb4aa4b PA |
8968 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8969 | { | |
8970 | if (readbuf) | |
3e43a32a | 8971 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 8972 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
8973 | &remote_protocol_packets |
8974 | [PACKET_qXfer_statictrace_read]); | |
8975 | else | |
2ed4b548 | 8976 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
8977 | } |
8978 | ||
a76d924d DJ |
8979 | /* Only handle flash writes. */ |
8980 | if (writebuf != NULL) | |
8981 | { | |
8982 | LONGEST xfered; | |
8983 | ||
8984 | switch (object) | |
8985 | { | |
8986 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
8987 | return remote_flash_write (ops, offset, len, xfered_len, |
8988 | writebuf); | |
a76d924d DJ |
8989 | |
8990 | default: | |
2ed4b548 | 8991 | return TARGET_XFER_E_IO; |
a76d924d DJ |
8992 | } |
8993 | } | |
4b8a223f | 8994 | |
1e3ff5ad AC |
8995 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8996 | objects!!! Instead specify new query packets. */ | |
8997 | switch (object) | |
c906108c | 8998 | { |
1e3ff5ad AC |
8999 | case TARGET_OBJECT_AVR: |
9000 | query_type = 'R'; | |
9001 | break; | |
802188a7 RM |
9002 | |
9003 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9004 | gdb_assert (annex == NULL); |
9005 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9006 | xfered_len, |
0876f84a | 9007 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9008 | |
23181151 DJ |
9009 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9010 | return remote_read_qxfer | |
9b409511 | 9011 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9012 | &remote_protocol_packets[PACKET_qXfer_features]); |
9013 | ||
cfa9d6d9 DJ |
9014 | case TARGET_OBJECT_LIBRARIES: |
9015 | return remote_read_qxfer | |
9b409511 | 9016 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9017 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9018 | ||
2268b414 JK |
9019 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9020 | return remote_read_qxfer | |
9b409511 | 9021 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9022 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9023 | ||
fd79ecee DJ |
9024 | case TARGET_OBJECT_MEMORY_MAP: |
9025 | gdb_assert (annex == NULL); | |
9026 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9027 | xfered_len, |
fd79ecee DJ |
9028 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9029 | ||
07e059b5 VP |
9030 | case TARGET_OBJECT_OSDATA: |
9031 | /* Should only get here if we're connected. */ | |
5d93a237 | 9032 | gdb_assert (rs->remote_desc); |
07e059b5 | 9033 | return remote_read_qxfer |
9b409511 | 9034 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9035 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9036 | ||
dc146f7c VP |
9037 | case TARGET_OBJECT_THREADS: |
9038 | gdb_assert (annex == NULL); | |
9039 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9040 | xfered_len, |
dc146f7c VP |
9041 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9042 | ||
b3b9301e PA |
9043 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9044 | gdb_assert (annex == NULL); | |
9045 | return remote_read_qxfer | |
9b409511 | 9046 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9047 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9048 | |
9049 | case TARGET_OBJECT_FDPIC: | |
9050 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9051 | xfered_len, |
78d85199 | 9052 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9053 | |
9054 | case TARGET_OBJECT_OPENVMS_UIB: | |
9055 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9056 | xfered_len, |
169081d0 TG |
9057 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9058 | ||
9accd112 MM |
9059 | case TARGET_OBJECT_BTRACE: |
9060 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9061 | xfered_len, |
9accd112 MM |
9062 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9063 | ||
f4abbc16 MM |
9064 | case TARGET_OBJECT_BTRACE_CONF: |
9065 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9066 | len, xfered_len, | |
9067 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9068 | ||
c78fa86a GB |
9069 | case TARGET_OBJECT_EXEC_FILE: |
9070 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9071 | len, xfered_len, | |
9072 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9073 | ||
1e3ff5ad | 9074 | default: |
2ed4b548 | 9075 | return TARGET_XFER_E_IO; |
c906108c SS |
9076 | } |
9077 | ||
0df8b418 | 9078 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9079 | large enough let the caller deal with it. */ |
ea9c271d | 9080 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9081 | return TARGET_XFER_E_IO; |
ea9c271d | 9082 | len = get_remote_packet_size (); |
1e3ff5ad | 9083 | |
23860348 | 9084 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9085 | if (!rs->remote_desc) |
8a3fe4f8 | 9086 | error (_("remote query is only available after target open")); |
c906108c | 9087 | |
1e3ff5ad | 9088 | gdb_assert (annex != NULL); |
4b8a223f | 9089 | gdb_assert (readbuf != NULL); |
c906108c | 9090 | |
6d820c5c | 9091 | p2 = rs->buf; |
c906108c SS |
9092 | *p2++ = 'q'; |
9093 | *p2++ = query_type; | |
9094 | ||
23860348 MS |
9095 | /* We used one buffer char for the remote protocol q command and |
9096 | another for the query type. As the remote protocol encapsulation | |
9097 | uses 4 chars plus one extra in case we are debugging | |
9098 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9099 | string. */ | |
c906108c | 9100 | i = 0; |
ea9c271d | 9101 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9102 | { |
1e3ff5ad AC |
9103 | /* Bad caller may have sent forbidden characters. */ |
9104 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9105 | *p2++ = annex[i]; | |
c906108c SS |
9106 | i++; |
9107 | } | |
1e3ff5ad AC |
9108 | *p2 = '\0'; |
9109 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9110 | |
6d820c5c | 9111 | i = putpkt (rs->buf); |
c5aa993b | 9112 | if (i < 0) |
2ed4b548 | 9113 | return TARGET_XFER_E_IO; |
c906108c | 9114 | |
6d820c5c DJ |
9115 | getpkt (&rs->buf, &rs->buf_size, 0); |
9116 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9117 | |
9b409511 YQ |
9118 | *xfered_len = strlen ((char *) readbuf); |
9119 | return TARGET_XFER_OK; | |
c906108c SS |
9120 | } |
9121 | ||
08388c79 DE |
9122 | static int |
9123 | remote_search_memory (struct target_ops* ops, | |
9124 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9125 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9126 | CORE_ADDR *found_addrp) | |
9127 | { | |
f5656ead | 9128 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9129 | struct remote_state *rs = get_remote_state (); |
9130 | int max_size = get_memory_write_packet_size (); | |
9131 | struct packet_config *packet = | |
9132 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9133 | /* Number of packet bytes used to encode the pattern; |
9134 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9135 | int escaped_pattern_len; |
0df8b418 | 9136 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9137 | int used_pattern_len; |
9138 | int i; | |
9139 | int found; | |
9140 | ULONGEST found_addr; | |
9141 | ||
9142 | /* Don't go to the target if we don't have to. | |
9143 | This is done before checking packet->support to avoid the possibility that | |
9144 | a success for this edge case means the facility works in general. */ | |
9145 | if (pattern_len > search_space_len) | |
9146 | return 0; | |
9147 | if (pattern_len == 0) | |
9148 | { | |
9149 | *found_addrp = start_addr; | |
9150 | return 1; | |
9151 | } | |
9152 | ||
9153 | /* If we already know the packet isn't supported, fall back to the simple | |
9154 | way of searching memory. */ | |
9155 | ||
4082afcc | 9156 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9157 | { |
9158 | /* Target doesn't provided special support, fall back and use the | |
9159 | standard support (copy memory and do the search here). */ | |
9160 | return simple_search_memory (ops, start_addr, search_space_len, | |
9161 | pattern, pattern_len, found_addrp); | |
9162 | } | |
9163 | ||
28439a30 PA |
9164 | /* Make sure the remote is pointing at the right process. */ |
9165 | set_general_process (); | |
9166 | ||
08388c79 DE |
9167 | /* Insert header. */ |
9168 | i = snprintf (rs->buf, max_size, | |
9169 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9170 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9171 | phex_nz (search_space_len, sizeof (search_space_len))); |
9172 | max_size -= (i + 1); | |
9173 | ||
9174 | /* Escape as much data as fits into rs->buf. */ | |
9175 | escaped_pattern_len = | |
bc20a4af | 9176 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9177 | &used_pattern_len, max_size); |
9178 | ||
9179 | /* Bail if the pattern is too large. */ | |
9180 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9181 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9182 | |
9183 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9184 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9185 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9186 | { | |
9187 | /* The request may not have worked because the command is not | |
9188 | supported. If so, fall back to the simple way. */ | |
9189 | if (packet->support == PACKET_DISABLE) | |
9190 | { | |
9191 | return simple_search_memory (ops, start_addr, search_space_len, | |
9192 | pattern, pattern_len, found_addrp); | |
9193 | } | |
9194 | return -1; | |
9195 | } | |
9196 | ||
9197 | if (rs->buf[0] == '0') | |
9198 | found = 0; | |
9199 | else if (rs->buf[0] == '1') | |
9200 | { | |
9201 | found = 1; | |
9202 | if (rs->buf[1] != ',') | |
10e0fa18 | 9203 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9204 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9205 | *found_addrp = found_addr; | |
9206 | } | |
9207 | else | |
10e0fa18 | 9208 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9209 | |
9210 | return found; | |
9211 | } | |
9212 | ||
96baa820 | 9213 | static void |
a30bf1f1 | 9214 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9215 | struct ui_file *outbuf) |
96baa820 | 9216 | { |
d01949b6 | 9217 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9218 | char *p = rs->buf; |
96baa820 | 9219 | |
5d93a237 | 9220 | if (!rs->remote_desc) |
8a3fe4f8 | 9221 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9222 | |
23860348 | 9223 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9224 | if (command == NULL) |
9225 | command = ""; | |
9226 | ||
23860348 | 9227 | /* The query prefix. */ |
2e9f7625 DJ |
9228 | strcpy (rs->buf, "qRcmd,"); |
9229 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9230 | |
3e43a32a MS |
9231 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9232 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9233 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9234 | |
23860348 | 9235 | /* Encode the actual command. */ |
a30bf1f1 | 9236 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9237 | |
6d820c5c | 9238 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9239 | error (_("Communication problem with target.")); |
96baa820 JM |
9240 | |
9241 | /* get/display the response */ | |
9242 | while (1) | |
9243 | { | |
2e9f7625 DJ |
9244 | char *buf; |
9245 | ||
00bf0b85 | 9246 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9247 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9248 | rs->buf[0] = '\0'; |
5b37825d PW |
9249 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9250 | { | |
9251 | /* Timeout. Continue to (try to) read responses. | |
9252 | This is better than stopping with an error, assuming the stub | |
9253 | is still executing the (long) monitor command. | |
9254 | If needed, the user can interrupt gdb using C-c, obtaining | |
9255 | an effect similar to stop on timeout. */ | |
9256 | continue; | |
9257 | } | |
2e9f7625 | 9258 | buf = rs->buf; |
96baa820 | 9259 | if (buf[0] == '\0') |
8a3fe4f8 | 9260 | error (_("Target does not support this command.")); |
96baa820 JM |
9261 | if (buf[0] == 'O' && buf[1] != 'K') |
9262 | { | |
23860348 | 9263 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9264 | continue; |
9265 | } | |
9266 | if (strcmp (buf, "OK") == 0) | |
9267 | break; | |
7be570e7 JM |
9268 | if (strlen (buf) == 3 && buf[0] == 'E' |
9269 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9270 | { | |
8a3fe4f8 | 9271 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9272 | } |
96baa820 JM |
9273 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9274 | { | |
9275 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9276 | |
96baa820 JM |
9277 | fputc_unfiltered (c, outbuf); |
9278 | } | |
9279 | break; | |
9280 | } | |
9281 | } | |
9282 | ||
fd79ecee DJ |
9283 | static VEC(mem_region_s) * |
9284 | remote_memory_map (struct target_ops *ops) | |
9285 | { | |
9286 | VEC(mem_region_s) *result = NULL; | |
9287 | char *text = target_read_stralloc (¤t_target, | |
9288 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9289 | ||
9290 | if (text) | |
9291 | { | |
9292 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9293 | |
fd79ecee DJ |
9294 | result = parse_memory_map (text); |
9295 | do_cleanups (back_to); | |
9296 | } | |
9297 | ||
9298 | return result; | |
9299 | } | |
9300 | ||
c906108c | 9301 | static void |
fba45db2 | 9302 | packet_command (char *args, int from_tty) |
c906108c | 9303 | { |
d01949b6 | 9304 | struct remote_state *rs = get_remote_state (); |
c906108c | 9305 | |
5d93a237 | 9306 | if (!rs->remote_desc) |
8a3fe4f8 | 9307 | error (_("command can only be used with remote target")); |
c906108c | 9308 | |
c5aa993b | 9309 | if (!args) |
8a3fe4f8 | 9310 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9311 | |
9312 | puts_filtered ("sending: "); | |
9313 | print_packet (args); | |
9314 | puts_filtered ("\n"); | |
9315 | putpkt (args); | |
9316 | ||
6d820c5c | 9317 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9318 | puts_filtered ("received: "); |
6d820c5c | 9319 | print_packet (rs->buf); |
c906108c SS |
9320 | puts_filtered ("\n"); |
9321 | } | |
9322 | ||
9323 | #if 0 | |
23860348 | 9324 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9325 | |
a14ed312 | 9326 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9327 | |
a14ed312 | 9328 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9329 | |
a14ed312 | 9330 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9331 | |
a14ed312 | 9332 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9333 | |
23860348 | 9334 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9335 | |
a14ed312 | 9336 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9337 | |
23860348 | 9338 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9339 | |
a14ed312 | 9340 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9341 | |
a14ed312 | 9342 | static void init_remote_threadtests (void); |
c906108c | 9343 | |
23860348 | 9344 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9345 | |
9346 | static void | |
fba45db2 | 9347 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9348 | { |
9349 | int sample_thread = SAMPLE_THREAD; | |
9350 | ||
a3f17187 | 9351 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9352 | set_general_thread (sample_thread); |
c906108c SS |
9353 | } |
9354 | ||
9355 | ||
9356 | static void | |
fba45db2 | 9357 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9358 | { |
9359 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9360 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9361 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9362 | |
79d7f229 | 9363 | if (remote_thread_alive (ptid)) |
c906108c SS |
9364 | printf_filtered ("PASS: Thread alive test\n"); |
9365 | else | |
9366 | printf_filtered ("FAIL: Thread alive test\n"); | |
9367 | } | |
9368 | ||
23860348 | 9369 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9370 | |
9371 | void | |
fba45db2 | 9372 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9373 | { |
9374 | char hexid[20]; | |
9375 | ||
23860348 | 9376 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9377 | hexid[16] = 0; |
9378 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9379 | } | |
9380 | ||
9381 | static void | |
fba45db2 | 9382 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9383 | { |
9384 | int startflag = 1; | |
9385 | threadref nextthread; | |
9386 | int done, result_count; | |
9387 | threadref threadlist[3]; | |
9388 | ||
9389 | printf_filtered ("Remote Threadlist test\n"); | |
9390 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9391 | &result_count, &threadlist[0])) | |
9392 | printf_filtered ("FAIL: threadlist test\n"); | |
9393 | else | |
9394 | { | |
9395 | threadref *scan = threadlist; | |
9396 | threadref *limit = scan + result_count; | |
9397 | ||
9398 | while (scan < limit) | |
9399 | output_threadid (" thread ", scan++); | |
9400 | } | |
9401 | } | |
9402 | ||
9403 | void | |
fba45db2 | 9404 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9405 | { |
9406 | output_threadid ("Threadid: ", &info->threadid); | |
9407 | printf_filtered ("Name: %s\n ", info->shortname); | |
9408 | printf_filtered ("State: %s\n", info->display); | |
9409 | printf_filtered ("other: %s\n\n", info->more_display); | |
9410 | } | |
9411 | ||
9412 | int | |
fba45db2 | 9413 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9414 | { |
9415 | int result; | |
9416 | int set; | |
9417 | struct gdb_ext_thread_info threadinfo; | |
9418 | ||
9419 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9420 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9421 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9422 | display_thread_info (&threadinfo); | |
9423 | return result; | |
9424 | } | |
9425 | ||
9426 | static void | |
fba45db2 | 9427 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9428 | { |
9429 | int athread = SAMPLE_THREAD; | |
9430 | threadref thread; | |
9431 | int set; | |
9432 | ||
9433 | int_to_threadref (&thread, athread); | |
9434 | printf_filtered ("Remote Threadinfo test\n"); | |
9435 | if (!get_and_display_threadinfo (&thread)) | |
9436 | printf_filtered ("FAIL cannot get thread info\n"); | |
9437 | } | |
9438 | ||
9439 | static int | |
fba45db2 | 9440 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9441 | { |
9442 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9443 | return get_and_display_threadinfo (ref); | |
9444 | } | |
9445 | ||
9446 | static void | |
fba45db2 | 9447 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9448 | { |
9449 | printf_filtered ("Remote Threadlist update test\n"); | |
9450 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9451 | } | |
9452 | ||
9453 | static void | |
9454 | init_remote_threadtests (void) | |
9455 | { | |
3e43a32a MS |
9456 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9457 | _("Fetch and print the remote list of " | |
9458 | "thread identifiers, one pkt only")); | |
c906108c | 9459 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9460 | _("Fetch and display info about one thread")); |
c906108c | 9461 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9462 | _("Test setting to a different thread")); |
c906108c | 9463 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9464 | _("Iterate through updating all remote thread info")); |
c906108c | 9465 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9466 | _(" Remote thread alive test ")); |
c906108c SS |
9467 | } |
9468 | ||
9469 | #endif /* 0 */ | |
9470 | ||
f3fb8c85 MS |
9471 | /* Convert a thread ID to a string. Returns the string in a static |
9472 | buffer. */ | |
9473 | ||
9474 | static char * | |
117de6a9 | 9475 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9476 | { |
79d7f229 | 9477 | static char buf[64]; |
82f73884 | 9478 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9479 | |
7cee1e54 PA |
9480 | if (ptid_equal (ptid, null_ptid)) |
9481 | return normal_pid_to_str (ptid); | |
9482 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9483 | { |
9484 | /* Printing an inferior target id. */ | |
9485 | ||
9486 | /* When multi-process extensions are off, there's no way in the | |
9487 | remote protocol to know the remote process id, if there's any | |
9488 | at all. There's one exception --- when we're connected with | |
9489 | target extended-remote, and we manually attached to a process | |
9490 | with "attach PID". We don't record anywhere a flag that | |
9491 | allows us to distinguish that case from the case of | |
9492 | connecting with extended-remote and the stub already being | |
9493 | attached to a process, and reporting yes to qAttached, hence | |
9494 | no smart special casing here. */ | |
9495 | if (!remote_multi_process_p (rs)) | |
9496 | { | |
9497 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9498 | return buf; | |
9499 | } | |
9500 | ||
9501 | return normal_pid_to_str (ptid); | |
82f73884 | 9502 | } |
ecd0ada5 | 9503 | else |
79d7f229 | 9504 | { |
ecd0ada5 PA |
9505 | if (ptid_equal (magic_null_ptid, ptid)) |
9506 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9507 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 | 9508 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
ba348170 | 9509 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); |
ecd0ada5 PA |
9510 | else |
9511 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 9512 | ptid_get_lwp (ptid)); |
79d7f229 PA |
9513 | return buf; |
9514 | } | |
f3fb8c85 MS |
9515 | } |
9516 | ||
38691318 KB |
9517 | /* Get the address of the thread local variable in OBJFILE which is |
9518 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9519 | ||
9520 | static CORE_ADDR | |
117de6a9 PA |
9521 | remote_get_thread_local_address (struct target_ops *ops, |
9522 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9523 | { |
4082afcc | 9524 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
9525 | { |
9526 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9527 | char *p = rs->buf; |
82f73884 | 9528 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9529 | enum packet_result result; |
38691318 KB |
9530 | |
9531 | strcpy (p, "qGetTLSAddr:"); | |
9532 | p += strlen (p); | |
82f73884 | 9533 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9534 | *p++ = ','; |
9535 | p += hexnumstr (p, offset); | |
9536 | *p++ = ','; | |
9537 | p += hexnumstr (p, lm); | |
9538 | *p++ = '\0'; | |
9539 | ||
6d820c5c DJ |
9540 | putpkt (rs->buf); |
9541 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9542 | result = packet_ok (rs->buf, |
9543 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9544 | if (result == PACKET_OK) |
38691318 KB |
9545 | { |
9546 | ULONGEST result; | |
9547 | ||
6d820c5c | 9548 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9549 | return result; |
9550 | } | |
571dd617 | 9551 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9552 | throw_error (TLS_GENERIC_ERROR, |
9553 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9554 | else |
109c3e39 AC |
9555 | throw_error (TLS_GENERIC_ERROR, |
9556 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9557 | } |
9558 | else | |
109c3e39 AC |
9559 | throw_error (TLS_GENERIC_ERROR, |
9560 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9561 | /* Not reached. */ |
9562 | return 0; | |
9563 | } | |
9564 | ||
711e434b PM |
9565 | /* Provide thread local base, i.e. Thread Information Block address. |
9566 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9567 | ||
70221824 | 9568 | static int |
bd7ae0f5 | 9569 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 9570 | { |
4082afcc | 9571 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
9572 | { |
9573 | struct remote_state *rs = get_remote_state (); | |
9574 | char *p = rs->buf; | |
9575 | char *endp = rs->buf + get_remote_packet_size (); | |
9576 | enum packet_result result; | |
9577 | ||
9578 | strcpy (p, "qGetTIBAddr:"); | |
9579 | p += strlen (p); | |
9580 | p = write_ptid (p, endp, ptid); | |
9581 | *p++ = '\0'; | |
9582 | ||
9583 | putpkt (rs->buf); | |
9584 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9585 | result = packet_ok (rs->buf, | |
9586 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9587 | if (result == PACKET_OK) | |
9588 | { | |
9589 | ULONGEST result; | |
9590 | ||
9591 | unpack_varlen_hex (rs->buf, &result); | |
9592 | if (addr) | |
9593 | *addr = (CORE_ADDR) result; | |
9594 | return 1; | |
9595 | } | |
9596 | else if (result == PACKET_UNKNOWN) | |
9597 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9598 | else | |
9599 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9600 | } | |
9601 | else | |
9602 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9603 | /* Not reached. */ | |
9604 | return 0; | |
9605 | } | |
9606 | ||
29709017 DJ |
9607 | /* Support for inferring a target description based on the current |
9608 | architecture and the size of a 'g' packet. While the 'g' packet | |
9609 | can have any size (since optional registers can be left off the | |
9610 | end), some sizes are easily recognizable given knowledge of the | |
9611 | approximate architecture. */ | |
9612 | ||
9613 | struct remote_g_packet_guess | |
9614 | { | |
9615 | int bytes; | |
9616 | const struct target_desc *tdesc; | |
9617 | }; | |
9618 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9619 | DEF_VEC_O(remote_g_packet_guess_s); | |
9620 | ||
9621 | struct remote_g_packet_data | |
9622 | { | |
9623 | VEC(remote_g_packet_guess_s) *guesses; | |
9624 | }; | |
9625 | ||
9626 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9627 | ||
9628 | static void * | |
9629 | remote_g_packet_data_init (struct obstack *obstack) | |
9630 | { | |
9631 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9632 | } | |
9633 | ||
9634 | void | |
9635 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9636 | const struct target_desc *tdesc) | |
9637 | { | |
9638 | struct remote_g_packet_data *data | |
9639 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9640 | struct remote_g_packet_guess new_guess, *guess; | |
9641 | int ix; | |
9642 | ||
9643 | gdb_assert (tdesc != NULL); | |
9644 | ||
9645 | for (ix = 0; | |
9646 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9647 | ix++) | |
9648 | if (guess->bytes == bytes) | |
9649 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9650 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9651 | bytes); |
9652 | ||
9653 | new_guess.bytes = bytes; | |
9654 | new_guess.tdesc = tdesc; | |
9655 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9656 | } | |
9657 | ||
d962ef82 DJ |
9658 | /* Return 1 if remote_read_description would do anything on this target |
9659 | and architecture, 0 otherwise. */ | |
9660 | ||
9661 | static int | |
9662 | remote_read_description_p (struct target_ops *target) | |
9663 | { | |
9664 | struct remote_g_packet_data *data | |
f5656ead | 9665 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9666 | |
9667 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9668 | return 1; | |
9669 | ||
9670 | return 0; | |
9671 | } | |
9672 | ||
29709017 DJ |
9673 | static const struct target_desc * |
9674 | remote_read_description (struct target_ops *target) | |
9675 | { | |
9676 | struct remote_g_packet_data *data | |
f5656ead | 9677 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9678 | |
d962ef82 DJ |
9679 | /* Do not try this during initial connection, when we do not know |
9680 | whether there is a running but stopped thread. */ | |
9681 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 9682 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 9683 | |
29709017 DJ |
9684 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9685 | { | |
9686 | struct remote_g_packet_guess *guess; | |
9687 | int ix; | |
9688 | int bytes = send_g_packet (); | |
9689 | ||
9690 | for (ix = 0; | |
9691 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9692 | ix++) | |
9693 | if (guess->bytes == bytes) | |
9694 | return guess->tdesc; | |
9695 | ||
9696 | /* We discard the g packet. A minor optimization would be to | |
9697 | hold on to it, and fill the register cache once we have selected | |
9698 | an architecture, but it's too tricky to do safely. */ | |
9699 | } | |
9700 | ||
2117c711 | 9701 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
9702 | } |
9703 | ||
a6b151f1 DJ |
9704 | /* Remote file transfer support. This is host-initiated I/O, not |
9705 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9706 | ||
9707 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9708 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9709 | decrease *LEFT. Otherwise raise an error. */ | |
9710 | ||
9711 | static void | |
9712 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9713 | { | |
9714 | int len = strlen (string); | |
9715 | ||
9716 | if (len > *left) | |
9717 | error (_("Packet too long for target.")); | |
9718 | ||
9719 | memcpy (*buffer, string, len); | |
9720 | *buffer += len; | |
9721 | *left -= len; | |
9722 | ||
9723 | /* NUL-terminate the buffer as a convenience, if there is | |
9724 | room. */ | |
9725 | if (*left) | |
9726 | **buffer = '\0'; | |
9727 | } | |
9728 | ||
9729 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9730 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9731 | decrease *LEFT. Otherwise raise an error. */ | |
9732 | ||
9733 | static void | |
9734 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9735 | int len) | |
9736 | { | |
9737 | if (2 * len > *left) | |
9738 | error (_("Packet too long for target.")); | |
9739 | ||
9740 | bin2hex (bytes, *buffer, len); | |
9741 | *buffer += 2 * len; | |
9742 | *left -= 2 * len; | |
9743 | ||
9744 | /* NUL-terminate the buffer as a convenience, if there is | |
9745 | room. */ | |
9746 | if (*left) | |
9747 | **buffer = '\0'; | |
9748 | } | |
9749 | ||
9750 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9751 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9752 | decrease *LEFT. Otherwise raise an error. */ | |
9753 | ||
9754 | static void | |
9755 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9756 | { | |
9757 | int len = hexnumlen (value); | |
9758 | ||
9759 | if (len > *left) | |
9760 | error (_("Packet too long for target.")); | |
9761 | ||
9762 | hexnumstr (*buffer, value); | |
9763 | *buffer += len; | |
9764 | *left -= len; | |
9765 | ||
9766 | /* NUL-terminate the buffer as a convenience, if there is | |
9767 | room. */ | |
9768 | if (*left) | |
9769 | **buffer = '\0'; | |
9770 | } | |
9771 | ||
9772 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9773 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9774 | was included, and *ATTACHMENT to point to the start of the annex | |
9775 | if any. The length of the packet isn't needed here; there may | |
9776 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9777 | ||
9778 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9779 | -1 is returned, the other variables may not be initialized. */ | |
9780 | ||
9781 | static int | |
9782 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9783 | int *remote_errno, char **attachment) | |
9784 | { | |
9785 | char *p, *p2; | |
9786 | ||
9787 | *remote_errno = 0; | |
9788 | *attachment = NULL; | |
9789 | ||
9790 | if (buffer[0] != 'F') | |
9791 | return -1; | |
9792 | ||
9793 | errno = 0; | |
9794 | *retcode = strtol (&buffer[1], &p, 16); | |
9795 | if (errno != 0 || p == &buffer[1]) | |
9796 | return -1; | |
9797 | ||
9798 | /* Check for ",errno". */ | |
9799 | if (*p == ',') | |
9800 | { | |
9801 | errno = 0; | |
9802 | *remote_errno = strtol (p + 1, &p2, 16); | |
9803 | if (errno != 0 || p + 1 == p2) | |
9804 | return -1; | |
9805 | p = p2; | |
9806 | } | |
9807 | ||
9808 | /* Check for ";attachment". If there is no attachment, the | |
9809 | packet should end here. */ | |
9810 | if (*p == ';') | |
9811 | { | |
9812 | *attachment = p + 1; | |
9813 | return 0; | |
9814 | } | |
9815 | else if (*p == '\0') | |
9816 | return 0; | |
9817 | else | |
9818 | return -1; | |
9819 | } | |
9820 | ||
9821 | /* Send a prepared I/O packet to the target and read its response. | |
9822 | The prepared packet is in the global RS->BUF before this function | |
9823 | is called, and the answer is there when we return. | |
9824 | ||
9825 | COMMAND_BYTES is the length of the request to send, which may include | |
9826 | binary data. WHICH_PACKET is the packet configuration to check | |
9827 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9828 | is set to the error number and -1 is returned. Otherwise the value | |
9829 | returned by the function is returned. | |
9830 | ||
9831 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9832 | attachment is expected; an error will be reported if there's a | |
9833 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9834 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9835 | attachment's length. */ | |
9836 | ||
9837 | static int | |
9838 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9839 | int *remote_errno, char **attachment, | |
9840 | int *attachment_len) | |
9841 | { | |
9842 | struct remote_state *rs = get_remote_state (); | |
9843 | int ret, bytes_read; | |
9844 | char *attachment_tmp; | |
9845 | ||
5d93a237 | 9846 | if (!rs->remote_desc |
4082afcc | 9847 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
9848 | { |
9849 | *remote_errno = FILEIO_ENOSYS; | |
9850 | return -1; | |
9851 | } | |
9852 | ||
9853 | putpkt_binary (rs->buf, command_bytes); | |
9854 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9855 | ||
9856 | /* If it timed out, something is wrong. Don't try to parse the | |
9857 | buffer. */ | |
9858 | if (bytes_read < 0) | |
9859 | { | |
9860 | *remote_errno = FILEIO_EINVAL; | |
9861 | return -1; | |
9862 | } | |
9863 | ||
9864 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9865 | { | |
9866 | case PACKET_ERROR: | |
9867 | *remote_errno = FILEIO_EINVAL; | |
9868 | return -1; | |
9869 | case PACKET_UNKNOWN: | |
9870 | *remote_errno = FILEIO_ENOSYS; | |
9871 | return -1; | |
9872 | case PACKET_OK: | |
9873 | break; | |
9874 | } | |
9875 | ||
9876 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9877 | &attachment_tmp)) | |
9878 | { | |
9879 | *remote_errno = FILEIO_EINVAL; | |
9880 | return -1; | |
9881 | } | |
9882 | ||
9883 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9884 | if ((attachment_tmp == NULL && attachment != NULL) | |
9885 | || (attachment_tmp != NULL && attachment == NULL)) | |
9886 | { | |
9887 | *remote_errno = FILEIO_EINVAL; | |
9888 | return -1; | |
9889 | } | |
9890 | ||
9891 | /* If an attachment was found, it must point into the packet buffer; | |
9892 | work out how many bytes there were. */ | |
9893 | if (attachment_tmp != NULL) | |
9894 | { | |
9895 | *attachment = attachment_tmp; | |
9896 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9897 | } | |
9898 | ||
9899 | return ret; | |
9900 | } | |
9901 | ||
4bd7dc42 GB |
9902 | /* Return nonzero if the filesystem accessed by the target_fileio_* |
9903 | methods is the local filesystem, zero otherwise. */ | |
9904 | ||
9905 | static int | |
9906 | remote_filesystem_is_local (struct target_ops *self) | |
9907 | { | |
9908 | return 0; | |
9909 | } | |
9910 | ||
a6b151f1 DJ |
9911 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a |
9912 | remote file descriptor, or -1 if an error occurs (and set | |
9913 | *REMOTE_ERRNO). */ | |
9914 | ||
9915 | static int | |
cd897586 TT |
9916 | remote_hostio_open (struct target_ops *self, |
9917 | const char *filename, int flags, int mode, | |
a6b151f1 DJ |
9918 | int *remote_errno) |
9919 | { | |
9920 | struct remote_state *rs = get_remote_state (); | |
9921 | char *p = rs->buf; | |
9922 | int left = get_remote_packet_size () - 1; | |
9923 | ||
9924 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9925 | ||
9926 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9927 | strlen (filename)); | |
9928 | remote_buffer_add_string (&p, &left, ","); | |
9929 | ||
9930 | remote_buffer_add_int (&p, &left, flags); | |
9931 | remote_buffer_add_string (&p, &left, ","); | |
9932 | ||
9933 | remote_buffer_add_int (&p, &left, mode); | |
9934 | ||
9935 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9936 | remote_errno, NULL, NULL); | |
9937 | } | |
9938 | ||
9939 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9940 | Return the number of bytes written, or -1 if an error occurs (and | |
9941 | set *REMOTE_ERRNO). */ | |
9942 | ||
9943 | static int | |
0d866f62 TT |
9944 | remote_hostio_pwrite (struct target_ops *self, |
9945 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
9946 | ULONGEST offset, int *remote_errno) |
9947 | { | |
9948 | struct remote_state *rs = get_remote_state (); | |
9949 | char *p = rs->buf; | |
9950 | int left = get_remote_packet_size (); | |
9951 | int out_len; | |
9952 | ||
9953 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9954 | ||
9955 | remote_buffer_add_int (&p, &left, fd); | |
9956 | remote_buffer_add_string (&p, &left, ","); | |
9957 | ||
9958 | remote_buffer_add_int (&p, &left, offset); | |
9959 | remote_buffer_add_string (&p, &left, ","); | |
9960 | ||
bc20a4af | 9961 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9962 | get_remote_packet_size () - (p - rs->buf)); |
9963 | ||
9964 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9965 | remote_errno, NULL, NULL); | |
9966 | } | |
9967 | ||
9968 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9969 | Return the number of bytes read, or -1 if an error occurs (and | |
9970 | set *REMOTE_ERRNO). */ | |
9971 | ||
9972 | static int | |
a3be983c TT |
9973 | remote_hostio_pread (struct target_ops *self, |
9974 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
9975 | ULONGEST offset, int *remote_errno) |
9976 | { | |
9977 | struct remote_state *rs = get_remote_state (); | |
9978 | char *p = rs->buf; | |
9979 | char *attachment; | |
9980 | int left = get_remote_packet_size (); | |
9981 | int ret, attachment_len; | |
9982 | int read_len; | |
9983 | ||
9984 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9985 | ||
9986 | remote_buffer_add_int (&p, &left, fd); | |
9987 | remote_buffer_add_string (&p, &left, ","); | |
9988 | ||
9989 | remote_buffer_add_int (&p, &left, len); | |
9990 | remote_buffer_add_string (&p, &left, ","); | |
9991 | ||
9992 | remote_buffer_add_int (&p, &left, offset); | |
9993 | ||
9994 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9995 | remote_errno, &attachment, | |
9996 | &attachment_len); | |
9997 | ||
9998 | if (ret < 0) | |
9999 | return ret; | |
10000 | ||
bc20a4af | 10001 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10002 | read_buf, len); |
10003 | if (read_len != ret) | |
10004 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10005 | ||
10006 | return ret; | |
10007 | } | |
10008 | ||
10009 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
10010 | (and set *REMOTE_ERRNO). */ | |
10011 | ||
10012 | static int | |
df39ea25 | 10013 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10014 | { |
10015 | struct remote_state *rs = get_remote_state (); | |
10016 | char *p = rs->buf; | |
10017 | int left = get_remote_packet_size () - 1; | |
10018 | ||
10019 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
10020 | ||
10021 | remote_buffer_add_int (&p, &left, fd); | |
10022 | ||
10023 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10024 | remote_errno, NULL, NULL); | |
10025 | } | |
10026 | ||
10027 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
10028 | occurs (and set *REMOTE_ERRNO). */ | |
10029 | ||
10030 | static int | |
dbbca37d TT |
10031 | remote_hostio_unlink (struct target_ops *self, |
10032 | const char *filename, int *remote_errno) | |
a6b151f1 DJ |
10033 | { |
10034 | struct remote_state *rs = get_remote_state (); | |
10035 | char *p = rs->buf; | |
10036 | int left = get_remote_packet_size () - 1; | |
10037 | ||
10038 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
10039 | ||
10040 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10041 | strlen (filename)); | |
10042 | ||
10043 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10044 | remote_errno, NULL, NULL); | |
10045 | } | |
10046 | ||
b9e7b9c3 UW |
10047 | /* Read value of symbolic link FILENAME on the remote target. Return |
10048 | a null-terminated string allocated via xmalloc, or NULL if an error | |
10049 | occurs (and set *REMOTE_ERRNO). */ | |
10050 | ||
10051 | static char * | |
fab5aa7c TT |
10052 | remote_hostio_readlink (struct target_ops *self, |
10053 | const char *filename, int *remote_errno) | |
b9e7b9c3 UW |
10054 | { |
10055 | struct remote_state *rs = get_remote_state (); | |
10056 | char *p = rs->buf; | |
10057 | char *attachment; | |
10058 | int left = get_remote_packet_size (); | |
10059 | int len, attachment_len; | |
10060 | int read_len; | |
10061 | char *ret; | |
10062 | ||
10063 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
10064 | ||
10065 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10066 | strlen (filename)); | |
10067 | ||
10068 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10069 | remote_errno, &attachment, | |
10070 | &attachment_len); | |
10071 | ||
10072 | if (len < 0) | |
10073 | return NULL; | |
10074 | ||
10075 | ret = xmalloc (len + 1); | |
10076 | ||
bc20a4af PA |
10077 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10078 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10079 | if (read_len != len) |
10080 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10081 | ||
10082 | ret[len] = '\0'; | |
10083 | return ret; | |
10084 | } | |
10085 | ||
0a93529c GB |
10086 | /* Read information about the open file FD on the remote target |
10087 | into ST. Return 0 on success, or -1 if an error occurs (and | |
10088 | set *REMOTE_ERRNO). */ | |
10089 | ||
10090 | static int | |
10091 | remote_hostio_fstat (struct target_ops *self, | |
10092 | int fd, struct stat *st, | |
10093 | int *remote_errno) | |
10094 | { | |
10095 | struct remote_state *rs = get_remote_state (); | |
10096 | char *p = rs->buf; | |
10097 | int left = get_remote_packet_size (); | |
10098 | int attachment_len, ret; | |
10099 | char *attachment; | |
10100 | struct fio_stat fst; | |
10101 | int read_len; | |
10102 | ||
464b0089 GB |
10103 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10104 | ||
10105 | remote_buffer_add_int (&p, &left, fd); | |
10106 | ||
10107 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10108 | remote_errno, &attachment, | |
10109 | &attachment_len); | |
10110 | if (ret < 0) | |
0a93529c | 10111 | { |
464b0089 GB |
10112 | if (*remote_errno != FILEIO_ENOSYS) |
10113 | return ret; | |
10114 | ||
0a93529c GB |
10115 | /* Strictly we should return -1, ENOSYS here, but when |
10116 | "set sysroot remote:" was implemented in August 2008 | |
10117 | BFD's need for a stat function was sidestepped with | |
10118 | this hack. This was not remedied until March 2015 | |
10119 | so we retain the previous behavior to avoid breaking | |
10120 | compatibility. | |
10121 | ||
10122 | Note that the memset is a March 2015 addition; older | |
10123 | GDBs set st_size *and nothing else* so the structure | |
10124 | would have garbage in all other fields. This might | |
10125 | break something but retaining the previous behavior | |
10126 | here would be just too wrong. */ | |
10127 | ||
10128 | memset (st, 0, sizeof (struct stat)); | |
10129 | st->st_size = INT_MAX; | |
10130 | return 0; | |
10131 | } | |
10132 | ||
0a93529c GB |
10133 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10134 | (gdb_byte *) &fst, sizeof (fst)); | |
10135 | ||
10136 | if (read_len != ret) | |
10137 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10138 | ||
10139 | if (read_len != sizeof (fst)) | |
10140 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10141 | read_len, (int) sizeof (fst)); | |
10142 | ||
10143 | remote_fileio_to_host_stat (&fst, st); | |
10144 | ||
10145 | return 0; | |
10146 | } | |
10147 | ||
a6b151f1 DJ |
10148 | static int |
10149 | remote_fileio_errno_to_host (int errnum) | |
10150 | { | |
10151 | switch (errnum) | |
10152 | { | |
10153 | case FILEIO_EPERM: | |
10154 | return EPERM; | |
10155 | case FILEIO_ENOENT: | |
10156 | return ENOENT; | |
10157 | case FILEIO_EINTR: | |
10158 | return EINTR; | |
10159 | case FILEIO_EIO: | |
10160 | return EIO; | |
10161 | case FILEIO_EBADF: | |
10162 | return EBADF; | |
10163 | case FILEIO_EACCES: | |
10164 | return EACCES; | |
10165 | case FILEIO_EFAULT: | |
10166 | return EFAULT; | |
10167 | case FILEIO_EBUSY: | |
10168 | return EBUSY; | |
10169 | case FILEIO_EEXIST: | |
10170 | return EEXIST; | |
10171 | case FILEIO_ENODEV: | |
10172 | return ENODEV; | |
10173 | case FILEIO_ENOTDIR: | |
10174 | return ENOTDIR; | |
10175 | case FILEIO_EISDIR: | |
10176 | return EISDIR; | |
10177 | case FILEIO_EINVAL: | |
10178 | return EINVAL; | |
10179 | case FILEIO_ENFILE: | |
10180 | return ENFILE; | |
10181 | case FILEIO_EMFILE: | |
10182 | return EMFILE; | |
10183 | case FILEIO_EFBIG: | |
10184 | return EFBIG; | |
10185 | case FILEIO_ENOSPC: | |
10186 | return ENOSPC; | |
10187 | case FILEIO_ESPIPE: | |
10188 | return ESPIPE; | |
10189 | case FILEIO_EROFS: | |
10190 | return EROFS; | |
10191 | case FILEIO_ENOSYS: | |
10192 | return ENOSYS; | |
10193 | case FILEIO_ENAMETOOLONG: | |
10194 | return ENAMETOOLONG; | |
10195 | } | |
10196 | return -1; | |
10197 | } | |
10198 | ||
10199 | static char * | |
10200 | remote_hostio_error (int errnum) | |
10201 | { | |
10202 | int host_error = remote_fileio_errno_to_host (errnum); | |
10203 | ||
10204 | if (host_error == -1) | |
10205 | error (_("Unknown remote I/O error %d"), errnum); | |
10206 | else | |
10207 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10208 | } | |
10209 | ||
a6b151f1 DJ |
10210 | static void |
10211 | remote_hostio_close_cleanup (void *opaque) | |
10212 | { | |
10213 | int fd = *(int *) opaque; | |
10214 | int remote_errno; | |
10215 | ||
df39ea25 | 10216 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
10217 | } |
10218 | ||
10219 | void | |
10220 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10221 | { | |
10222 | struct cleanup *back_to, *close_cleanup; | |
10223 | int retcode, fd, remote_errno, bytes, io_size; | |
10224 | FILE *file; | |
10225 | gdb_byte *buffer; | |
10226 | int bytes_in_buffer; | |
10227 | int saw_eof; | |
10228 | ULONGEST offset; | |
5d93a237 | 10229 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10230 | |
5d93a237 | 10231 | if (!rs->remote_desc) |
a6b151f1 DJ |
10232 | error (_("command can only be used with remote target")); |
10233 | ||
614c279d | 10234 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10235 | if (file == NULL) |
10236 | perror_with_name (local_file); | |
7c8a8b04 | 10237 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10238 | |
cd897586 TT |
10239 | fd = remote_hostio_open (find_target_at (process_stratum), |
10240 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
a6b151f1 DJ |
10241 | | FILEIO_O_TRUNC), |
10242 | 0700, &remote_errno); | |
10243 | if (fd == -1) | |
10244 | remote_hostio_error (remote_errno); | |
10245 | ||
10246 | /* Send up to this many bytes at once. They won't all fit in the | |
10247 | remote packet limit, so we'll transfer slightly fewer. */ | |
10248 | io_size = get_remote_packet_size (); | |
10249 | buffer = xmalloc (io_size); | |
10250 | make_cleanup (xfree, buffer); | |
10251 | ||
10252 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10253 | ||
10254 | bytes_in_buffer = 0; | |
10255 | saw_eof = 0; | |
10256 | offset = 0; | |
10257 | while (bytes_in_buffer || !saw_eof) | |
10258 | { | |
10259 | if (!saw_eof) | |
10260 | { | |
3e43a32a MS |
10261 | bytes = fread (buffer + bytes_in_buffer, 1, |
10262 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10263 | file); |
10264 | if (bytes == 0) | |
10265 | { | |
10266 | if (ferror (file)) | |
10267 | error (_("Error reading %s."), local_file); | |
10268 | else | |
10269 | { | |
10270 | /* EOF. Unless there is something still in the | |
10271 | buffer from the last iteration, we are done. */ | |
10272 | saw_eof = 1; | |
10273 | if (bytes_in_buffer == 0) | |
10274 | break; | |
10275 | } | |
10276 | } | |
10277 | } | |
10278 | else | |
10279 | bytes = 0; | |
10280 | ||
10281 | bytes += bytes_in_buffer; | |
10282 | bytes_in_buffer = 0; | |
10283 | ||
0d866f62 TT |
10284 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10285 | fd, buffer, bytes, | |
3e43a32a | 10286 | offset, &remote_errno); |
a6b151f1 DJ |
10287 | |
10288 | if (retcode < 0) | |
10289 | remote_hostio_error (remote_errno); | |
10290 | else if (retcode == 0) | |
10291 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10292 | else if (retcode < bytes) | |
10293 | { | |
10294 | /* Short write. Save the rest of the read data for the next | |
10295 | write. */ | |
10296 | bytes_in_buffer = bytes - retcode; | |
10297 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10298 | } | |
10299 | ||
10300 | offset += retcode; | |
10301 | } | |
10302 | ||
10303 | discard_cleanups (close_cleanup); | |
df39ea25 | 10304 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10305 | remote_hostio_error (remote_errno); |
10306 | ||
10307 | if (from_tty) | |
10308 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10309 | do_cleanups (back_to); | |
10310 | } | |
10311 | ||
10312 | void | |
10313 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10314 | { | |
10315 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10316 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10317 | FILE *file; |
10318 | gdb_byte *buffer; | |
10319 | ULONGEST offset; | |
5d93a237 | 10320 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10321 | |
5d93a237 | 10322 | if (!rs->remote_desc) |
a6b151f1 DJ |
10323 | error (_("command can only be used with remote target")); |
10324 | ||
cd897586 TT |
10325 | fd = remote_hostio_open (find_target_at (process_stratum), |
10326 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
a6b151f1 DJ |
10327 | if (fd == -1) |
10328 | remote_hostio_error (remote_errno); | |
10329 | ||
614c279d | 10330 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10331 | if (file == NULL) |
10332 | perror_with_name (local_file); | |
7c8a8b04 | 10333 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10334 | |
10335 | /* Send up to this many bytes at once. They won't all fit in the | |
10336 | remote packet limit, so we'll transfer slightly fewer. */ | |
10337 | io_size = get_remote_packet_size (); | |
10338 | buffer = xmalloc (io_size); | |
10339 | make_cleanup (xfree, buffer); | |
10340 | ||
10341 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10342 | ||
10343 | offset = 0; | |
10344 | while (1) | |
10345 | { | |
a3be983c TT |
10346 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10347 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10348 | if (bytes == 0) |
10349 | /* Success, but no bytes, means end-of-file. */ | |
10350 | break; | |
10351 | if (bytes == -1) | |
10352 | remote_hostio_error (remote_errno); | |
10353 | ||
10354 | offset += bytes; | |
10355 | ||
10356 | bytes = fwrite (buffer, 1, bytes, file); | |
10357 | if (bytes == 0) | |
10358 | perror_with_name (local_file); | |
10359 | } | |
10360 | ||
10361 | discard_cleanups (close_cleanup); | |
df39ea25 | 10362 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10363 | remote_hostio_error (remote_errno); |
10364 | ||
10365 | if (from_tty) | |
10366 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10367 | do_cleanups (back_to); | |
10368 | } | |
10369 | ||
10370 | void | |
10371 | remote_file_delete (const char *remote_file, int from_tty) | |
10372 | { | |
10373 | int retcode, remote_errno; | |
5d93a237 | 10374 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10375 | |
5d93a237 | 10376 | if (!rs->remote_desc) |
a6b151f1 DJ |
10377 | error (_("command can only be used with remote target")); |
10378 | ||
dbbca37d TT |
10379 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
10380 | remote_file, &remote_errno); | |
a6b151f1 DJ |
10381 | if (retcode == -1) |
10382 | remote_hostio_error (remote_errno); | |
10383 | ||
10384 | if (from_tty) | |
10385 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10386 | } | |
10387 | ||
10388 | static void | |
10389 | remote_put_command (char *args, int from_tty) | |
10390 | { | |
10391 | struct cleanup *back_to; | |
10392 | char **argv; | |
10393 | ||
d1a41061 PP |
10394 | if (args == NULL) |
10395 | error_no_arg (_("file to put")); | |
10396 | ||
10397 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10398 | back_to = make_cleanup_freeargv (argv); |
10399 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10400 | error (_("Invalid parameters to remote put")); | |
10401 | ||
10402 | remote_file_put (argv[0], argv[1], from_tty); | |
10403 | ||
10404 | do_cleanups (back_to); | |
10405 | } | |
10406 | ||
10407 | static void | |
10408 | remote_get_command (char *args, int from_tty) | |
10409 | { | |
10410 | struct cleanup *back_to; | |
10411 | char **argv; | |
10412 | ||
d1a41061 PP |
10413 | if (args == NULL) |
10414 | error_no_arg (_("file to get")); | |
10415 | ||
10416 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10417 | back_to = make_cleanup_freeargv (argv); |
10418 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10419 | error (_("Invalid parameters to remote get")); | |
10420 | ||
10421 | remote_file_get (argv[0], argv[1], from_tty); | |
10422 | ||
10423 | do_cleanups (back_to); | |
10424 | } | |
10425 | ||
10426 | static void | |
10427 | remote_delete_command (char *args, int from_tty) | |
10428 | { | |
10429 | struct cleanup *back_to; | |
10430 | char **argv; | |
10431 | ||
d1a41061 PP |
10432 | if (args == NULL) |
10433 | error_no_arg (_("file to delete")); | |
10434 | ||
10435 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10436 | back_to = make_cleanup_freeargv (argv); |
10437 | if (argv[0] == NULL || argv[1] != NULL) | |
10438 | error (_("Invalid parameters to remote delete")); | |
10439 | ||
10440 | remote_file_delete (argv[0], from_tty); | |
10441 | ||
10442 | do_cleanups (back_to); | |
10443 | } | |
10444 | ||
10445 | static void | |
10446 | remote_command (char *args, int from_tty) | |
10447 | { | |
635c7e8a | 10448 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
10449 | } |
10450 | ||
b2175913 | 10451 | static int |
19db3e69 | 10452 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10453 | { |
4082afcc PA |
10454 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
10455 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
10456 | return 1; |
10457 | else | |
10458 | return 0; | |
b2175913 MS |
10459 | } |
10460 | ||
74531fed | 10461 | static int |
2a9a2795 | 10462 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10463 | { |
10464 | return 1; | |
10465 | } | |
10466 | ||
03583c20 | 10467 | static int |
2bfc0540 | 10468 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10469 | { |
10470 | /* Only supported in extended mode. */ | |
10471 | return 0; | |
10472 | } | |
10473 | ||
8a305172 | 10474 | static int |
86ce2668 | 10475 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10476 | { |
10477 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10478 | |
901f9912 UW |
10479 | /* Only extended-remote handles being attached to multiple |
10480 | processes, even though plain remote can use the multi-process | |
10481 | thread id extensions, so that GDB knows the target process's | |
10482 | PID. */ | |
10483 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10484 | } |
10485 | ||
70221824 | 10486 | static int |
782b2b07 SS |
10487 | remote_supports_cond_tracepoints (void) |
10488 | { | |
4082afcc | 10489 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
10490 | } |
10491 | ||
3788aec7 | 10492 | static int |
efcc2da7 | 10493 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 10494 | { |
4082afcc | 10495 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
10496 | } |
10497 | ||
70221824 | 10498 | static int |
7a697b8d SS |
10499 | remote_supports_fast_tracepoints (void) |
10500 | { | |
4082afcc | 10501 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
10502 | } |
10503 | ||
0fb4aa4b PA |
10504 | static int |
10505 | remote_supports_static_tracepoints (void) | |
10506 | { | |
4082afcc | 10507 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
10508 | } |
10509 | ||
1e4d1764 YQ |
10510 | static int |
10511 | remote_supports_install_in_trace (void) | |
10512 | { | |
4082afcc | 10513 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
10514 | } |
10515 | ||
d248b706 | 10516 | static int |
7d178d6a | 10517 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 10518 | { |
4082afcc PA |
10519 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
10520 | == PACKET_ENABLE); | |
d248b706 KY |
10521 | } |
10522 | ||
3065dfb6 | 10523 | static int |
6de37a3a | 10524 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 10525 | { |
4082afcc | 10526 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
10527 | } |
10528 | ||
d3ce09f5 | 10529 | static int |
78eff0ec | 10530 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 10531 | { |
4082afcc | 10532 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
10533 | } |
10534 | ||
35b1e5cc | 10535 | static void |
ecae04e1 | 10536 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
10537 | { |
10538 | putpkt ("QTinit"); | |
10539 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10540 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10541 | error (_("Target does not support this command.")); |
10542 | } | |
10543 | ||
10544 | static void free_actions_list (char **actions_list); | |
10545 | static void free_actions_list_cleanup_wrapper (void *); | |
10546 | static void | |
10547 | free_actions_list_cleanup_wrapper (void *al) | |
10548 | { | |
10549 | free_actions_list (al); | |
10550 | } | |
10551 | ||
10552 | static void | |
10553 | free_actions_list (char **actions_list) | |
10554 | { | |
10555 | int ndx; | |
10556 | ||
10557 | if (actions_list == 0) | |
10558 | return; | |
10559 | ||
10560 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10561 | xfree (actions_list[ndx]); | |
10562 | ||
10563 | xfree (actions_list); | |
10564 | } | |
10565 | ||
409873ef SS |
10566 | /* Recursive routine to walk through command list including loops, and |
10567 | download packets for each command. */ | |
10568 | ||
10569 | static void | |
10570 | remote_download_command_source (int num, ULONGEST addr, | |
10571 | struct command_line *cmds) | |
10572 | { | |
10573 | struct remote_state *rs = get_remote_state (); | |
10574 | struct command_line *cmd; | |
10575 | ||
10576 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10577 | { | |
0df8b418 | 10578 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10579 | strcpy (rs->buf, "QTDPsrc:"); |
10580 | encode_source_string (num, addr, "cmd", cmd->line, | |
10581 | rs->buf + strlen (rs->buf), | |
10582 | rs->buf_size - strlen (rs->buf)); | |
10583 | putpkt (rs->buf); | |
10584 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10585 | if (strcmp (target_buf, "OK")) | |
10586 | warning (_("Target does not support source download.")); | |
10587 | ||
10588 | if (cmd->control_type == while_control | |
10589 | || cmd->control_type == while_stepping_control) | |
10590 | { | |
10591 | remote_download_command_source (num, addr, *cmd->body_list); | |
10592 | ||
0df8b418 | 10593 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10594 | strcpy (rs->buf, "QTDPsrc:"); |
10595 | encode_source_string (num, addr, "cmd", "end", | |
10596 | rs->buf + strlen (rs->buf), | |
10597 | rs->buf_size - strlen (rs->buf)); | |
10598 | putpkt (rs->buf); | |
10599 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10600 | if (strcmp (target_buf, "OK")) | |
10601 | warning (_("Target does not support source download.")); | |
10602 | } | |
10603 | } | |
10604 | } | |
10605 | ||
35b1e5cc | 10606 | static void |
548f7808 | 10607 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 10608 | { |
bba74b36 | 10609 | #define BUF_SIZE 2048 |
e8ba3115 | 10610 | |
35b1e5cc | 10611 | CORE_ADDR tpaddr; |
409873ef | 10612 | char addrbuf[40]; |
bba74b36 | 10613 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10614 | char **tdp_actions; |
10615 | char **stepping_actions; | |
10616 | int ndx; | |
10617 | struct cleanup *old_chain = NULL; | |
10618 | struct agent_expr *aexpr; | |
10619 | struct cleanup *aexpr_chain = NULL; | |
10620 | char *pkt; | |
e8ba3115 | 10621 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10622 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10623 | |
dc673c81 | 10624 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10625 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10626 | tdp_actions); | |
10627 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10628 | stepping_actions); | |
10629 | ||
10630 | tpaddr = loc->address; | |
10631 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10632 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10633 | addrbuf, /* address */ | |
10634 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10635 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10636 | /* Fast tracepoints are mostly handled by the target, but we can |
10637 | tell the target how big of an instruction block should be moved | |
10638 | around. */ | |
10639 | if (b->type == bp_fast_tracepoint) | |
10640 | { | |
10641 | /* Only test for support at download time; we may not know | |
10642 | target capabilities at definition time. */ | |
10643 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10644 | { |
e8ba3115 | 10645 | int isize; |
35b1e5cc | 10646 | |
f5656ead | 10647 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10648 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10649 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10650 | isize); | |
35b1e5cc | 10651 | else |
e8ba3115 YQ |
10652 | /* If it passed validation at definition but fails now, |
10653 | something is very wrong. */ | |
10654 | internal_error (__FILE__, __LINE__, | |
10655 | _("Fast tracepoint not " | |
10656 | "valid during download")); | |
35b1e5cc | 10657 | } |
e8ba3115 YQ |
10658 | else |
10659 | /* Fast tracepoints are functionally identical to regular | |
10660 | tracepoints, so don't take lack of support as a reason to | |
10661 | give up on the trace run. */ | |
10662 | warning (_("Target does not support fast tracepoints, " | |
10663 | "downloading %d as regular tracepoint"), b->number); | |
10664 | } | |
10665 | else if (b->type == bp_static_tracepoint) | |
10666 | { | |
10667 | /* Only test for support at download time; we may not know | |
10668 | target capabilities at definition time. */ | |
10669 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10670 | { |
e8ba3115 | 10671 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10672 | |
e8ba3115 YQ |
10673 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10674 | strcat (buf, ":S"); | |
0fb4aa4b | 10675 | else |
e8ba3115 | 10676 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10677 | } |
e8ba3115 YQ |
10678 | else |
10679 | /* Fast tracepoints are functionally identical to regular | |
10680 | tracepoints, so don't take lack of support as a reason | |
10681 | to give up on the trace run. */ | |
10682 | error (_("Target does not support static tracepoints")); | |
10683 | } | |
10684 | /* If the tracepoint has a conditional, make it into an agent | |
10685 | expression and append to the definition. */ | |
10686 | if (loc->cond) | |
10687 | { | |
10688 | /* Only test support at download time, we may not know target | |
10689 | capabilities at definition time. */ | |
10690 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10691 | { |
e8ba3115 YQ |
10692 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10693 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10694 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10695 | aexpr->len); | |
e8ba3115 YQ |
10696 | pkt = buf + strlen (buf); |
10697 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10698 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10699 | *pkt = '\0'; | |
10700 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10701 | } |
e8ba3115 YQ |
10702 | else |
10703 | warning (_("Target does not support conditional tracepoints, " | |
10704 | "ignoring tp %d cond"), b->number); | |
10705 | } | |
35b1e5cc | 10706 | |
d9b3f62e | 10707 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10708 | strcat (buf, "-"); |
10709 | putpkt (buf); | |
10710 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10711 | if (strcmp (target_buf, "OK")) | |
10712 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10713 | |
e8ba3115 YQ |
10714 | /* do_single_steps (t); */ |
10715 | if (tdp_actions) | |
10716 | { | |
10717 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10718 | { |
e8ba3115 | 10719 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10720 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10721 | b->number, addrbuf, /* address */ | |
10722 | tdp_actions[ndx], | |
10723 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10724 | ? '-' : 0)); | |
e8ba3115 YQ |
10725 | putpkt (buf); |
10726 | remote_get_noisy_reply (&target_buf, | |
10727 | &target_buf_size); | |
10728 | if (strcmp (target_buf, "OK")) | |
10729 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10730 | } |
e8ba3115 YQ |
10731 | } |
10732 | if (stepping_actions) | |
10733 | { | |
10734 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10735 | { |
e8ba3115 | 10736 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10737 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10738 | b->number, addrbuf, /* address */ | |
10739 | ((ndx == 0) ? "S" : ""), | |
10740 | stepping_actions[ndx], | |
10741 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10742 | putpkt (buf); |
10743 | remote_get_noisy_reply (&target_buf, | |
10744 | &target_buf_size); | |
10745 | if (strcmp (target_buf, "OK")) | |
10746 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10747 | } |
e8ba3115 | 10748 | } |
409873ef | 10749 | |
4082afcc | 10750 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 YQ |
10751 | { |
10752 | if (b->addr_string) | |
409873ef | 10753 | { |
e8ba3115 YQ |
10754 | strcpy (buf, "QTDPsrc:"); |
10755 | encode_source_string (b->number, loc->address, | |
10756 | "at", b->addr_string, buf + strlen (buf), | |
10757 | 2048 - strlen (buf)); | |
409873ef | 10758 | |
e8ba3115 YQ |
10759 | putpkt (buf); |
10760 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10761 | if (strcmp (target_buf, "OK")) | |
10762 | warning (_("Target does not support source download.")); | |
409873ef | 10763 | } |
e8ba3115 YQ |
10764 | if (b->cond_string) |
10765 | { | |
10766 | strcpy (buf, "QTDPsrc:"); | |
10767 | encode_source_string (b->number, loc->address, | |
10768 | "cond", b->cond_string, buf + strlen (buf), | |
10769 | 2048 - strlen (buf)); | |
10770 | putpkt (buf); | |
10771 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10772 | if (strcmp (target_buf, "OK")) | |
10773 | warning (_("Target does not support source download.")); | |
10774 | } | |
10775 | remote_download_command_source (b->number, loc->address, | |
10776 | breakpoint_commands (b)); | |
35b1e5cc | 10777 | } |
e8ba3115 YQ |
10778 | |
10779 | do_cleanups (old_chain); | |
35b1e5cc SS |
10780 | } |
10781 | ||
1e4d1764 | 10782 | static int |
a52a8357 | 10783 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 10784 | { |
1e51243a PA |
10785 | struct remote_state *rs = get_remote_state (); |
10786 | struct trace_status *ts; | |
10787 | int status; | |
10788 | ||
10789 | /* Don't try to install tracepoints until we've relocated our | |
10790 | symbols, and fetched and merged the target's tracepoint list with | |
10791 | ours. */ | |
10792 | if (rs->starting_up) | |
10793 | return 0; | |
10794 | ||
10795 | ts = current_trace_status (); | |
8bd200f1 | 10796 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
10797 | |
10798 | if (status == -1 || !ts->running_known || !ts->running) | |
10799 | return 0; | |
10800 | ||
10801 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10802 | installing tracepoint in trace, we have to return. */ | |
10803 | if (!remote_supports_install_in_trace ()) | |
10804 | return 0; | |
10805 | ||
10806 | return 1; | |
10807 | } | |
10808 | ||
10809 | ||
35b1e5cc | 10810 | static void |
559d2b81 TT |
10811 | remote_download_trace_state_variable (struct target_ops *self, |
10812 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
10813 | { |
10814 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10815 | char *p; |
35b1e5cc | 10816 | |
bba74b36 YQ |
10817 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10818 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10819 | tsv->builtin); | |
00bf0b85 SS |
10820 | p = rs->buf + strlen (rs->buf); |
10821 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10822 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 10823 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 10824 | *p++ = '\0'; |
35b1e5cc SS |
10825 | putpkt (rs->buf); |
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) | |
10830 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10831 | } |
10832 | ||
d248b706 | 10833 | static void |
46670d57 TT |
10834 | remote_enable_tracepoint (struct target_ops *self, |
10835 | struct bp_location *location) | |
d248b706 KY |
10836 | { |
10837 | struct remote_state *rs = get_remote_state (); | |
10838 | char addr_buf[40]; | |
10839 | ||
10840 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10841 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10842 | location->owner->number, addr_buf); | |
d248b706 KY |
10843 | putpkt (rs->buf); |
10844 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10845 | if (*rs->buf == '\0') | |
10846 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10847 | if (strcmp (rs->buf, "OK") != 0) | |
10848 | error (_("Error on target while enabling tracepoint.")); | |
10849 | } | |
10850 | ||
10851 | static void | |
780b049c TT |
10852 | remote_disable_tracepoint (struct target_ops *self, |
10853 | struct bp_location *location) | |
d248b706 KY |
10854 | { |
10855 | struct remote_state *rs = get_remote_state (); | |
10856 | char addr_buf[40]; | |
10857 | ||
10858 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10859 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10860 | location->owner->number, addr_buf); | |
d248b706 KY |
10861 | putpkt (rs->buf); |
10862 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10863 | if (*rs->buf == '\0') | |
10864 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10865 | if (strcmp (rs->buf, "OK") != 0) | |
10866 | error (_("Error on target while disabling tracepoint.")); | |
10867 | } | |
10868 | ||
35b1e5cc | 10869 | static void |
583f9a86 | 10870 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
10871 | { |
10872 | asection *s; | |
81b9b86e | 10873 | bfd *abfd = NULL; |
35b1e5cc | 10874 | bfd_size_type size; |
608bcef2 | 10875 | bfd_vma vma; |
35b1e5cc | 10876 | int anysecs = 0; |
c2fa21f1 | 10877 | int offset = 0; |
35b1e5cc SS |
10878 | |
10879 | if (!exec_bfd) | |
10880 | return; /* No information to give. */ | |
10881 | ||
10882 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10883 | offset = strlen (target_buf); |
35b1e5cc SS |
10884 | for (s = exec_bfd->sections; s; s = s->next) |
10885 | { | |
10886 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10887 | int sec_length; |
35b1e5cc SS |
10888 | |
10889 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10890 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10891 | (s->flags & SEC_READONLY) == 0) |
10892 | continue; | |
10893 | ||
10894 | anysecs = 1; | |
81b9b86e | 10895 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10896 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10897 | sprintf_vma (tmp1, vma); |
10898 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10899 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10900 | if (offset + sec_length + 1 > target_buf_size) | |
10901 | { | |
4082afcc | 10902 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 10903 | warning (_("\ |
c2fa21f1 HZ |
10904 | Too many sections for read-only sections definition packet.")); |
10905 | break; | |
10906 | } | |
bba74b36 YQ |
10907 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10908 | tmp1, tmp2); | |
c2fa21f1 | 10909 | offset += sec_length; |
35b1e5cc SS |
10910 | } |
10911 | if (anysecs) | |
10912 | { | |
10913 | putpkt (target_buf); | |
10914 | getpkt (&target_buf, &target_buf_size, 0); | |
10915 | } | |
10916 | } | |
10917 | ||
10918 | static void | |
e2d1aae3 | 10919 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
10920 | { |
10921 | putpkt ("QTStart"); | |
10922 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10923 | if (*target_buf == '\0') |
10924 | error (_("Target does not support this command.")); | |
10925 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10926 | error (_("Bogus reply from target: %s"), target_buf); |
10927 | } | |
10928 | ||
10929 | static int | |
8bd200f1 | 10930 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 10931 | { |
953b98d1 | 10932 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10933 | char *p = NULL; |
0df8b418 | 10934 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10935 | extern int trace_regblock_size; |
bd3eecc3 PA |
10936 | enum packet_result result; |
10937 | ||
4082afcc | 10938 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 10939 | return -1; |
a744cf53 | 10940 | |
00bf0b85 SS |
10941 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10942 | ||
049dc89b JK |
10943 | putpkt ("qTStatus"); |
10944 | ||
492d29ea | 10945 | TRY |
67f41397 JK |
10946 | { |
10947 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10948 | } | |
492d29ea | 10949 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 10950 | { |
598d3636 JK |
10951 | if (ex.error != TARGET_CLOSE_ERROR) |
10952 | { | |
10953 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10954 | return -1; | |
10955 | } | |
10956 | throw_exception (ex); | |
67f41397 | 10957 | } |
492d29ea | 10958 | END_CATCH |
00bf0b85 | 10959 | |
bd3eecc3 PA |
10960 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10961 | ||
00bf0b85 | 10962 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10963 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10964 | return -1; |
35b1e5cc | 10965 | |
00bf0b85 | 10966 | /* We're working with a live target. */ |
f5911ea1 | 10967 | ts->filename = NULL; |
00bf0b85 | 10968 | |
00bf0b85 | 10969 | if (*p++ != 'T') |
35b1e5cc SS |
10970 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10971 | ||
84cebc4a YQ |
10972 | /* Function 'parse_trace_status' sets default value of each field of |
10973 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10974 | parse_trace_status (p, ts); |
10975 | ||
10976 | return ts->running; | |
35b1e5cc SS |
10977 | } |
10978 | ||
70221824 | 10979 | static void |
db90e85c | 10980 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
10981 | struct uploaded_tp *utp) |
10982 | { | |
10983 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10984 | char *reply; |
10985 | struct bp_location *loc; | |
10986 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10987 | size_t size = get_remote_packet_size (); |
f196051f SS |
10988 | |
10989 | if (tp) | |
10990 | { | |
10991 | tp->base.hit_count = 0; | |
10992 | tp->traceframe_usage = 0; | |
10993 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10994 | { | |
10995 | /* If the tracepoint was never downloaded, don't go asking for | |
10996 | any status. */ | |
10997 | if (tp->number_on_target == 0) | |
10998 | continue; | |
bba74b36 YQ |
10999 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11000 | phex_nz (loc->address, 0)); | |
f196051f SS |
11001 | putpkt (rs->buf); |
11002 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11003 | if (reply && *reply) | |
11004 | { | |
11005 | if (*reply == 'V') | |
11006 | parse_tracepoint_status (reply + 1, bp, utp); | |
11007 | } | |
11008 | } | |
11009 | } | |
11010 | else if (utp) | |
11011 | { | |
11012 | utp->hit_count = 0; | |
11013 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11014 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11015 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11016 | putpkt (rs->buf); |
11017 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11018 | if (reply && *reply) | |
11019 | { | |
11020 | if (*reply == 'V') | |
11021 | parse_tracepoint_status (reply + 1, bp, utp); | |
11022 | } | |
11023 | } | |
11024 | } | |
11025 | ||
35b1e5cc | 11026 | static void |
74499f1b | 11027 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11028 | { |
11029 | putpkt ("QTStop"); | |
11030 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11031 | if (*target_buf == '\0') |
11032 | error (_("Target does not support this command.")); | |
11033 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11034 | error (_("Bogus reply from target: %s"), target_buf); |
11035 | } | |
11036 | ||
11037 | static int | |
bd4c6793 TT |
11038 | remote_trace_find (struct target_ops *self, |
11039 | enum trace_find_type type, int num, | |
cc5925ad | 11040 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11041 | int *tpp) |
11042 | { | |
11043 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11044 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11045 | char *p, *reply; |
11046 | int target_frameno = -1, target_tracept = -1; | |
11047 | ||
e6e4e701 PA |
11048 | /* Lookups other than by absolute frame number depend on the current |
11049 | trace selected, so make sure it is correct on the remote end | |
11050 | first. */ | |
11051 | if (type != tfind_number) | |
11052 | set_remote_traceframe (); | |
11053 | ||
35b1e5cc SS |
11054 | p = rs->buf; |
11055 | strcpy (p, "QTFrame:"); | |
11056 | p = strchr (p, '\0'); | |
11057 | switch (type) | |
11058 | { | |
11059 | case tfind_number: | |
bba74b36 | 11060 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11061 | break; |
11062 | case tfind_pc: | |
bba74b36 | 11063 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11064 | break; |
11065 | case tfind_tp: | |
bba74b36 | 11066 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11067 | break; |
11068 | case tfind_range: | |
bba74b36 YQ |
11069 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11070 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11071 | break; |
11072 | case tfind_outside: | |
bba74b36 YQ |
11073 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11074 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11075 | break; |
11076 | default: | |
9b20d036 | 11077 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11078 | } |
11079 | ||
11080 | putpkt (rs->buf); | |
2f65bcb7 | 11081 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11082 | if (*reply == '\0') |
11083 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11084 | |
11085 | while (reply && *reply) | |
11086 | switch (*reply) | |
11087 | { | |
11088 | case 'F': | |
f197e0f1 VP |
11089 | p = ++reply; |
11090 | target_frameno = (int) strtol (p, &reply, 16); | |
11091 | if (reply == p) | |
11092 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11093 | /* Don't update our remote traceframe number cache on failure |
11094 | to select a remote traceframe. */ | |
f197e0f1 VP |
11095 | if (target_frameno == -1) |
11096 | return -1; | |
35b1e5cc SS |
11097 | break; |
11098 | case 'T': | |
f197e0f1 VP |
11099 | p = ++reply; |
11100 | target_tracept = (int) strtol (p, &reply, 16); | |
11101 | if (reply == p) | |
11102 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11103 | break; |
11104 | case 'O': /* "OK"? */ | |
11105 | if (reply[1] == 'K' && reply[2] == '\0') | |
11106 | reply += 2; | |
11107 | else | |
11108 | error (_("Bogus reply from target: %s"), reply); | |
11109 | break; | |
11110 | default: | |
11111 | error (_("Bogus reply from target: %s"), reply); | |
11112 | } | |
11113 | if (tpp) | |
11114 | *tpp = target_tracept; | |
e6e4e701 | 11115 | |
262e1174 | 11116 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11117 | return target_frameno; |
11118 | } | |
11119 | ||
11120 | static int | |
4011015b TT |
11121 | remote_get_trace_state_variable_value (struct target_ops *self, |
11122 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11123 | { |
11124 | struct remote_state *rs = get_remote_state (); | |
11125 | char *reply; | |
11126 | ULONGEST uval; | |
11127 | ||
e6e4e701 PA |
11128 | set_remote_traceframe (); |
11129 | ||
bba74b36 | 11130 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11131 | putpkt (rs->buf); |
11132 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11133 | if (reply && *reply) | |
11134 | { | |
11135 | if (*reply == 'V') | |
11136 | { | |
11137 | unpack_varlen_hex (reply + 1, &uval); | |
11138 | *val = (LONGEST) uval; | |
11139 | return 1; | |
11140 | } | |
11141 | } | |
11142 | return 0; | |
11143 | } | |
11144 | ||
00bf0b85 | 11145 | static int |
dc3decaf | 11146 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
11147 | { |
11148 | struct remote_state *rs = get_remote_state (); | |
11149 | char *p, *reply; | |
11150 | ||
11151 | p = rs->buf; | |
11152 | strcpy (p, "QTSave:"); | |
11153 | p += strlen (p); | |
11154 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11155 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 11156 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
11157 | *p++ = '\0'; |
11158 | putpkt (rs->buf); | |
ad91cd99 | 11159 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11160 | if (*reply == '\0') |
ad91cd99 PA |
11161 | error (_("Target does not support this command.")); |
11162 | if (strcmp (reply, "OK") != 0) | |
11163 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11164 | return 0; |
11165 | } | |
11166 | ||
11167 | /* This is basically a memory transfer, but needs to be its own packet | |
11168 | because we don't know how the target actually organizes its trace | |
11169 | memory, plus we want to be able to ask for as much as possible, but | |
11170 | not be unhappy if we don't get as much as we ask for. */ | |
11171 | ||
11172 | static LONGEST | |
88ee6f45 TT |
11173 | remote_get_raw_trace_data (struct target_ops *self, |
11174 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
11175 | { |
11176 | struct remote_state *rs = get_remote_state (); | |
11177 | char *reply; | |
11178 | char *p; | |
11179 | int rslt; | |
11180 | ||
11181 | p = rs->buf; | |
11182 | strcpy (p, "qTBuffer:"); | |
11183 | p += strlen (p); | |
11184 | p += hexnumstr (p, offset); | |
11185 | *p++ = ','; | |
11186 | p += hexnumstr (p, len); | |
11187 | *p++ = '\0'; | |
11188 | ||
11189 | putpkt (rs->buf); | |
11190 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11191 | if (reply && *reply) | |
11192 | { | |
11193 | /* 'l' by itself means we're at the end of the buffer and | |
11194 | there is nothing more to get. */ | |
11195 | if (*reply == 'l') | |
11196 | return 0; | |
11197 | ||
11198 | /* Convert the reply into binary. Limit the number of bytes to | |
11199 | convert according to our passed-in buffer size, rather than | |
11200 | what was returned in the packet; if the target is | |
11201 | unexpectedly generous and gives us a bigger reply than we | |
11202 | asked for, we don't want to crash. */ | |
11203 | rslt = hex2bin (target_buf, buf, len); | |
11204 | return rslt; | |
11205 | } | |
11206 | ||
11207 | /* Something went wrong, flag as an error. */ | |
11208 | return -1; | |
11209 | } | |
11210 | ||
35b1e5cc | 11211 | static void |
37b25738 | 11212 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11213 | { |
11214 | struct remote_state *rs = get_remote_state (); | |
11215 | ||
4082afcc | 11216 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11217 | { |
ad91cd99 PA |
11218 | char *reply; |
11219 | ||
bba74b36 | 11220 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11221 | putpkt (rs->buf); |
ad91cd99 PA |
11222 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11223 | if (*reply == '\0') | |
33da3f1c | 11224 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11225 | if (strcmp (reply, "OK") != 0) |
11226 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11227 | } |
11228 | else if (val) | |
11229 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11230 | } |
11231 | ||
dc146f7c VP |
11232 | static int |
11233 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11234 | { | |
11235 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11236 | |
fe978cb0 PA |
11237 | if (info && info->priv) |
11238 | return info->priv->core; | |
dc146f7c VP |
11239 | return -1; |
11240 | } | |
11241 | ||
4daf5ac0 | 11242 | static void |
736d5b1f | 11243 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11244 | { |
11245 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11246 | char *reply; |
4daf5ac0 | 11247 | |
bba74b36 | 11248 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11249 | putpkt (rs->buf); |
ad91cd99 PA |
11250 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11251 | if (*reply == '\0') | |
4daf5ac0 | 11252 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11253 | if (strcmp (reply, "OK") != 0) |
11254 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11255 | } |
11256 | ||
b3b9301e | 11257 | static struct traceframe_info * |
a893e81f | 11258 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
11259 | { |
11260 | char *text; | |
11261 | ||
11262 | text = target_read_stralloc (¤t_target, | |
11263 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11264 | if (text != NULL) | |
11265 | { | |
11266 | struct traceframe_info *info; | |
11267 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11268 | ||
11269 | info = parse_traceframe_info (text); | |
11270 | do_cleanups (back_to); | |
11271 | return info; | |
11272 | } | |
11273 | ||
11274 | return NULL; | |
11275 | } | |
11276 | ||
405f8e94 SS |
11277 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11278 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11279 | if the packet is not supported, and 0 if the minimum instruction | |
11280 | length is unknown. */ | |
11281 | ||
11282 | static int | |
0e67620a | 11283 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
11284 | { |
11285 | struct remote_state *rs = get_remote_state (); | |
11286 | char *reply; | |
11287 | ||
e886a173 PA |
11288 | /* If we're not debugging a process yet, the IPA can't be |
11289 | loaded. */ | |
11290 | if (!target_has_execution) | |
11291 | return 0; | |
11292 | ||
11293 | /* Make sure the remote is pointing at the right process. */ | |
11294 | set_general_process (); | |
11295 | ||
bba74b36 | 11296 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11297 | putpkt (rs->buf); |
11298 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11299 | if (*reply == '\0') | |
11300 | return -1; | |
11301 | else | |
11302 | { | |
11303 | ULONGEST min_insn_len; | |
11304 | ||
11305 | unpack_varlen_hex (reply, &min_insn_len); | |
11306 | ||
11307 | return (int) min_insn_len; | |
11308 | } | |
11309 | } | |
11310 | ||
f6f899bf | 11311 | static void |
4da384be | 11312 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 11313 | { |
4082afcc | 11314 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
11315 | { |
11316 | struct remote_state *rs = get_remote_state (); | |
11317 | char *buf = rs->buf; | |
11318 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11319 | enum packet_result result; | |
11320 | ||
11321 | gdb_assert (val >= 0 || val == -1); | |
11322 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11323 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11324 | if (val < 0) | |
11325 | { | |
11326 | *buf++ = '-'; | |
11327 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11328 | } | |
11329 | else | |
11330 | buf += hexnumstr (buf, (ULONGEST) val); | |
11331 | ||
11332 | putpkt (rs->buf); | |
11333 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11334 | result = packet_ok (rs->buf, | |
11335 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11336 | ||
11337 | if (result != PACKET_OK) | |
11338 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11339 | } | |
11340 | } | |
11341 | ||
f196051f | 11342 | static int |
d9e68a2c TT |
11343 | remote_set_trace_notes (struct target_ops *self, |
11344 | const char *user, const char *notes, | |
ca623f82 | 11345 | const char *stop_notes) |
f196051f SS |
11346 | { |
11347 | struct remote_state *rs = get_remote_state (); | |
11348 | char *reply; | |
11349 | char *buf = rs->buf; | |
11350 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11351 | int nbytes; | |
11352 | ||
11353 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11354 | if (user) | |
11355 | { | |
11356 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11357 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11358 | buf += 2 * nbytes; |
11359 | *buf++ = ';'; | |
11360 | } | |
11361 | if (notes) | |
11362 | { | |
11363 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11364 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11365 | buf += 2 * nbytes; |
11366 | *buf++ = ';'; | |
11367 | } | |
11368 | if (stop_notes) | |
11369 | { | |
11370 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11371 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11372 | buf += 2 * nbytes; |
11373 | *buf++ = ';'; | |
11374 | } | |
11375 | /* Ensure the buffer is terminated. */ | |
11376 | *buf = '\0'; | |
11377 | ||
11378 | putpkt (rs->buf); | |
11379 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11380 | if (*reply == '\0') | |
11381 | return 0; | |
11382 | ||
11383 | if (strcmp (reply, "OK") != 0) | |
11384 | error (_("Bogus reply from target: %s"), reply); | |
11385 | ||
11386 | return 1; | |
11387 | } | |
11388 | ||
d1feda86 | 11389 | static int |
2c152180 | 11390 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 11391 | { |
4082afcc | 11392 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
11393 | { |
11394 | struct remote_state *rs = get_remote_state (); | |
11395 | ||
11396 | /* If the stub supports QAgent. */ | |
bba74b36 | 11397 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11398 | putpkt (rs->buf); |
11399 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11400 | ||
11401 | if (strcmp (rs->buf, "OK") == 0) | |
11402 | { | |
11403 | use_agent = use; | |
11404 | return 1; | |
11405 | } | |
11406 | } | |
11407 | ||
11408 | return 0; | |
11409 | } | |
11410 | ||
11411 | static int | |
fe38f897 | 11412 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 11413 | { |
4082afcc | 11414 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
11415 | } |
11416 | ||
9accd112 MM |
11417 | struct btrace_target_info |
11418 | { | |
11419 | /* The ptid of the traced thread. */ | |
11420 | ptid_t ptid; | |
f4abbc16 MM |
11421 | |
11422 | /* The obtained branch trace configuration. */ | |
11423 | struct btrace_config conf; | |
9accd112 MM |
11424 | }; |
11425 | ||
f4abbc16 MM |
11426 | /* Reset our idea of our target's btrace configuration. */ |
11427 | ||
11428 | static void | |
11429 | remote_btrace_reset (void) | |
11430 | { | |
11431 | struct remote_state *rs = get_remote_state (); | |
11432 | ||
11433 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
11434 | } | |
11435 | ||
9accd112 MM |
11436 | /* Check whether the target supports branch tracing. */ |
11437 | ||
11438 | static int | |
043c3577 | 11439 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 11440 | { |
4082afcc | 11441 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 11442 | return 0; |
4082afcc | 11443 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
11444 | return 0; |
11445 | ||
043c3577 MM |
11446 | switch (format) |
11447 | { | |
11448 | case BTRACE_FORMAT_NONE: | |
11449 | return 0; | |
11450 | ||
11451 | case BTRACE_FORMAT_BTS: | |
11452 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
11453 | } | |
11454 | ||
11455 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
11456 | } |
11457 | ||
f4abbc16 MM |
11458 | /* Synchronize the configuration with the target. */ |
11459 | ||
11460 | static void | |
11461 | btrace_sync_conf (const struct btrace_config *conf) | |
11462 | { | |
d33501a5 MM |
11463 | struct packet_config *packet; |
11464 | struct remote_state *rs; | |
11465 | char *buf, *pos, *endbuf; | |
11466 | ||
11467 | rs = get_remote_state (); | |
11468 | buf = rs->buf; | |
11469 | endbuf = buf + get_remote_packet_size (); | |
11470 | ||
11471 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
11472 | if (packet_config_support (packet) == PACKET_ENABLE | |
11473 | && conf->bts.size != rs->btrace_config.bts.size) | |
11474 | { | |
11475 | pos = buf; | |
11476 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
11477 | conf->bts.size); | |
11478 | ||
11479 | putpkt (buf); | |
11480 | getpkt (&buf, &rs->buf_size, 0); | |
11481 | ||
11482 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
11483 | { | |
11484 | if (buf[0] == 'E' && buf[1] == '.') | |
11485 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
11486 | else | |
11487 | error (_("Failed to configure the BTS buffer size.")); | |
11488 | } | |
11489 | ||
11490 | rs->btrace_config.bts.size = conf->bts.size; | |
11491 | } | |
f4abbc16 MM |
11492 | } |
11493 | ||
11494 | /* Read the current thread's btrace configuration from the target and | |
11495 | store it into CONF. */ | |
11496 | ||
11497 | static void | |
11498 | btrace_read_config (struct btrace_config *conf) | |
11499 | { | |
11500 | char *xml; | |
11501 | ||
11502 | xml = target_read_stralloc (¤t_target, | |
11503 | TARGET_OBJECT_BTRACE_CONF, ""); | |
11504 | if (xml != NULL) | |
11505 | { | |
11506 | struct cleanup *cleanup; | |
11507 | ||
11508 | cleanup = make_cleanup (xfree, xml); | |
11509 | parse_xml_btrace_conf (conf, xml); | |
11510 | do_cleanups (cleanup); | |
11511 | } | |
11512 | } | |
11513 | ||
9accd112 MM |
11514 | /* Enable branch tracing. */ |
11515 | ||
11516 | static struct btrace_target_info * | |
f4abbc16 MM |
11517 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
11518 | const struct btrace_config *conf) | |
9accd112 MM |
11519 | { |
11520 | struct btrace_target_info *tinfo = NULL; | |
11521 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11522 | struct remote_state *rs = get_remote_state (); | |
11523 | char *buf = rs->buf; | |
11524 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11525 | ||
4082afcc | 11526 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11527 | error (_("Target does not support branch tracing.")); |
11528 | ||
f4abbc16 MM |
11529 | btrace_sync_conf (conf); |
11530 | ||
9accd112 MM |
11531 | set_general_thread (ptid); |
11532 | ||
11533 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11534 | putpkt (rs->buf); | |
11535 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11536 | ||
11537 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11538 | { | |
11539 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11540 | error (_("Could not enable branch tracing for %s: %s"), | |
11541 | target_pid_to_str (ptid), rs->buf + 2); | |
11542 | else | |
11543 | error (_("Could not enable branch tracing for %s."), | |
11544 | target_pid_to_str (ptid)); | |
11545 | } | |
11546 | ||
11547 | tinfo = xzalloc (sizeof (*tinfo)); | |
11548 | tinfo->ptid = ptid; | |
11549 | ||
f4abbc16 MM |
11550 | /* If we fail to read the configuration, we lose some information, but the |
11551 | tracing itself is not impacted. */ | |
492d29ea PA |
11552 | TRY |
11553 | { | |
11554 | btrace_read_config (&tinfo->conf); | |
11555 | } | |
11556 | CATCH (err, RETURN_MASK_ERROR) | |
11557 | { | |
11558 | if (err.message != NULL) | |
11559 | warning ("%s", err.message); | |
11560 | } | |
11561 | END_CATCH | |
f4abbc16 | 11562 | |
9accd112 MM |
11563 | return tinfo; |
11564 | } | |
11565 | ||
11566 | /* Disable branch tracing. */ | |
11567 | ||
11568 | static void | |
25e95349 TT |
11569 | remote_disable_btrace (struct target_ops *self, |
11570 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11571 | { |
11572 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11573 | struct remote_state *rs = get_remote_state (); | |
11574 | char *buf = rs->buf; | |
11575 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11576 | ||
4082afcc | 11577 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11578 | error (_("Target does not support branch tracing.")); |
11579 | ||
11580 | set_general_thread (tinfo->ptid); | |
11581 | ||
11582 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11583 | putpkt (rs->buf); | |
11584 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11585 | ||
11586 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11587 | { | |
11588 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11589 | error (_("Could not disable branch tracing for %s: %s"), | |
11590 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11591 | else | |
11592 | error (_("Could not disable branch tracing for %s."), | |
11593 | target_pid_to_str (tinfo->ptid)); | |
11594 | } | |
11595 | ||
11596 | xfree (tinfo); | |
11597 | } | |
11598 | ||
11599 | /* Teardown branch tracing. */ | |
11600 | ||
11601 | static void | |
1777056d TT |
11602 | remote_teardown_btrace (struct target_ops *self, |
11603 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11604 | { |
11605 | /* We must not talk to the target during teardown. */ | |
11606 | xfree (tinfo); | |
11607 | } | |
11608 | ||
11609 | /* Read the branch trace. */ | |
11610 | ||
969c39fb | 11611 | static enum btrace_error |
39c49f83 | 11612 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 11613 | struct btrace_data *btrace, |
969c39fb | 11614 | struct btrace_target_info *tinfo, |
9accd112 MM |
11615 | enum btrace_read_type type) |
11616 | { | |
11617 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11618 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 11619 | struct cleanup *cleanup; |
9accd112 MM |
11620 | const char *annex; |
11621 | char *xml; | |
11622 | ||
4082afcc | 11623 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11624 | error (_("Target does not support branch tracing.")); |
11625 | ||
11626 | #if !defined(HAVE_LIBEXPAT) | |
11627 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11628 | #endif | |
11629 | ||
11630 | switch (type) | |
11631 | { | |
864089d2 | 11632 | case BTRACE_READ_ALL: |
9accd112 MM |
11633 | annex = "all"; |
11634 | break; | |
864089d2 | 11635 | case BTRACE_READ_NEW: |
9accd112 MM |
11636 | annex = "new"; |
11637 | break; | |
969c39fb MM |
11638 | case BTRACE_READ_DELTA: |
11639 | annex = "delta"; | |
11640 | break; | |
9accd112 MM |
11641 | default: |
11642 | internal_error (__FILE__, __LINE__, | |
11643 | _("Bad branch tracing read type: %u."), | |
11644 | (unsigned int) type); | |
11645 | } | |
11646 | ||
11647 | xml = target_read_stralloc (¤t_target, | |
11648 | TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
11649 | if (xml == NULL) |
11650 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 11651 | |
969c39fb | 11652 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 11653 | parse_xml_btrace (btrace, xml); |
969c39fb | 11654 | do_cleanups (cleanup); |
9accd112 | 11655 | |
969c39fb | 11656 | return BTRACE_ERR_NONE; |
9accd112 MM |
11657 | } |
11658 | ||
f4abbc16 MM |
11659 | static const struct btrace_config * |
11660 | remote_btrace_conf (struct target_ops *self, | |
11661 | const struct btrace_target_info *tinfo) | |
11662 | { | |
11663 | return &tinfo->conf; | |
11664 | } | |
11665 | ||
ced63ec0 | 11666 | static int |
5436ff03 | 11667 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 11668 | { |
4082afcc PA |
11669 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
11670 | == PACKET_ENABLE); | |
ced63ec0 GB |
11671 | } |
11672 | ||
9dd130a0 TT |
11673 | /* Implementation of to_load. */ |
11674 | ||
11675 | static void | |
9cbe5fff | 11676 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
11677 | { |
11678 | generic_load (name, from_tty); | |
11679 | } | |
11680 | ||
c78fa86a GB |
11681 | /* Accepts an integer PID; returns a string representing a file that |
11682 | can be opened on the remote side to get the symbols for the child | |
11683 | process. Returns NULL if the operation is not supported. */ | |
11684 | ||
11685 | static char * | |
11686 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
11687 | { | |
11688 | static char *filename = NULL; | |
835205d0 GB |
11689 | struct inferior *inf; |
11690 | char *annex = NULL; | |
c78fa86a GB |
11691 | |
11692 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
11693 | return NULL; | |
11694 | ||
11695 | if (filename != NULL) | |
11696 | xfree (filename); | |
11697 | ||
835205d0 GB |
11698 | inf = find_inferior_pid (pid); |
11699 | if (inf == NULL) | |
11700 | internal_error (__FILE__, __LINE__, | |
11701 | _("not currently attached to process %d"), pid); | |
11702 | ||
11703 | if (!inf->fake_pid_p) | |
11704 | { | |
11705 | const int annex_size = 9; | |
11706 | ||
11707 | annex = alloca (annex_size); | |
11708 | xsnprintf (annex, annex_size, "%x", pid); | |
11709 | } | |
11710 | ||
c78fa86a GB |
11711 | filename = target_read_stralloc (¤t_target, |
11712 | TARGET_OBJECT_EXEC_FILE, annex); | |
11713 | ||
11714 | return filename; | |
11715 | } | |
11716 | ||
c906108c | 11717 | static void |
fba45db2 | 11718 | init_remote_ops (void) |
c906108c | 11719 | { |
c5aa993b | 11720 | remote_ops.to_shortname = "remote"; |
c906108c | 11721 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11722 | remote_ops.to_doc = |
c906108c | 11723 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11724 | Specify the serial device it is connected to\n\ |
11725 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11726 | remote_ops.to_open = remote_open; |
11727 | remote_ops.to_close = remote_close; | |
c906108c | 11728 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11729 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11730 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11731 | remote_ops.to_wait = remote_wait; |
11732 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11733 | remote_ops.to_store_registers = remote_store_registers; | |
11734 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11735 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11736 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11737 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
11738 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
11739 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
11740 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
11741 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
11742 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11743 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11744 | remote_ops.to_watchpoint_addr_within_range = |
11745 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11746 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11747 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11748 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11749 | remote_ops.to_region_ok_for_hw_watchpoint |
11750 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11751 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11752 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 11753 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 11754 | remote_ops.to_load = remote_load; |
c906108c | 11755 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11756 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11757 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11758 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 11759 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 11760 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11761 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11762 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11763 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11764 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11765 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 11766 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 11767 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11768 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11769 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11770 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11771 | remote_ops.to_has_memory = default_child_has_memory; | |
11772 | remote_ops.to_has_stack = default_child_has_stack; | |
11773 | remote_ops.to_has_registers = default_child_has_registers; | |
11774 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11775 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11776 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11777 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11778 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11779 | remote_ops.to_flash_erase = remote_flash_erase; |
11780 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11781 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11782 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11783 | remote_ops.to_can_async_p = remote_can_async_p; |
11784 | remote_ops.to_is_async_p = remote_is_async_p; | |
11785 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11786 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11787 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11788 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11789 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11790 | remote_ops.to_supports_disable_randomization |
11791 | = remote_supports_disable_randomization; | |
4bd7dc42 | 11792 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
11793 | remote_ops.to_fileio_open = remote_hostio_open; |
11794 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11795 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 11796 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
11797 | remote_ops.to_fileio_close = remote_hostio_close; |
11798 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11799 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11800 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11801 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11802 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11803 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11804 | remote_ops.to_trace_init = remote_trace_init; |
11805 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11806 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11807 | remote_ops.to_download_trace_state_variable |
11808 | = remote_download_trace_state_variable; | |
d248b706 KY |
11809 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11810 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11811 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11812 | remote_ops.to_trace_start = remote_trace_start; | |
11813 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11814 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11815 | remote_ops.to_trace_stop = remote_trace_stop; |
11816 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11817 | remote_ops.to_get_trace_state_variable_value |
11818 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11819 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11820 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11821 | remote_ops.to_upload_trace_state_variables |
11822 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11823 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11824 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11825 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11826 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11827 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11828 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11829 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11830 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11831 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11832 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11833 | remote_ops.to_static_tracepoint_marker_at |
11834 | = remote_static_tracepoint_marker_at; | |
11835 | remote_ops.to_static_tracepoint_markers_by_strid | |
11836 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11837 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11838 | remote_ops.to_use_agent = remote_use_agent; |
11839 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11840 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11841 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11842 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11843 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11844 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 11845 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
11846 | remote_ops.to_augmented_libraries_svr4_read = |
11847 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11848 | } |
11849 | ||
11850 | /* Set up the extended remote vector by making a copy of the standard | |
11851 | remote vector and adding to it. */ | |
11852 | ||
11853 | static void | |
fba45db2 | 11854 | init_extended_remote_ops (void) |
c906108c SS |
11855 | { |
11856 | extended_remote_ops = remote_ops; | |
11857 | ||
0f71a2f6 | 11858 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11859 | extended_remote_ops.to_longname = |
c906108c | 11860 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11861 | extended_remote_ops.to_doc = |
c906108c | 11862 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11863 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11864 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11865 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11866 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11867 | extended_remote_ops.to_detach = extended_remote_detach; |
11868 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 11869 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 11870 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11871 | extended_remote_ops.to_supports_disable_randomization |
11872 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11873 | } |
11874 | ||
6426a772 | 11875 | static int |
6a109b6b | 11876 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 11877 | { |
5d93a237 TT |
11878 | struct remote_state *rs = get_remote_state (); |
11879 | ||
c6ebd6cf | 11880 | if (!target_async_permitted) |
75c99385 PA |
11881 | /* We only enable async when the user specifically asks for it. */ |
11882 | return 0; | |
11883 | ||
23860348 | 11884 | /* We're async whenever the serial device is. */ |
5d93a237 | 11885 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11886 | } |
11887 | ||
11888 | static int | |
6a109b6b | 11889 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 11890 | { |
5d93a237 TT |
11891 | struct remote_state *rs = get_remote_state (); |
11892 | ||
c6ebd6cf | 11893 | if (!target_async_permitted) |
75c99385 PA |
11894 | /* We only enable async when the user specifically asks for it. */ |
11895 | return 0; | |
11896 | ||
23860348 | 11897 | /* We're async whenever the serial device is. */ |
5d93a237 | 11898 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11899 | } |
11900 | ||
2acceee2 JM |
11901 | /* Pass the SERIAL event on and up to the client. One day this code |
11902 | will be able to delay notifying the client of an event until the | |
23860348 | 11903 | point where an entire packet has been received. */ |
2acceee2 | 11904 | |
2acceee2 JM |
11905 | static serial_event_ftype remote_async_serial_handler; |
11906 | ||
6426a772 | 11907 | static void |
819cc324 | 11908 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11909 | { |
88b496c3 TT |
11910 | struct remote_state *rs = context; |
11911 | ||
2acceee2 JM |
11912 | /* Don't propogate error information up to the client. Instead let |
11913 | the client find out about the error by querying the target. */ | |
6a3753b3 | 11914 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
11915 | } |
11916 | ||
74531fed PA |
11917 | static void |
11918 | remote_async_inferior_event_handler (gdb_client_data data) | |
11919 | { | |
11920 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11921 | } | |
11922 | ||
2acceee2 | 11923 | static void |
6a3753b3 | 11924 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 11925 | { |
5d93a237 TT |
11926 | struct remote_state *rs = get_remote_state (); |
11927 | ||
6a3753b3 | 11928 | if (enable) |
2acceee2 | 11929 | { |
88b496c3 | 11930 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
11931 | |
11932 | /* If there are pending events in the stop reply queue tell the | |
11933 | event loop to process them. */ | |
11934 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
11935 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
11936 | } |
11937 | else | |
b7d2e916 PA |
11938 | { |
11939 | serial_async (rs->remote_desc, NULL, NULL); | |
11940 | clear_async_event_handler (remote_async_inferior_event_token); | |
11941 | } | |
6426a772 JM |
11942 | } |
11943 | ||
5a2468f5 | 11944 | static void |
c2d11a7d | 11945 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11946 | { |
635c7e8a | 11947 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
11948 | } |
11949 | ||
d471ea57 AC |
11950 | static void |
11951 | show_remote_cmd (char *args, int from_tty) | |
11952 | { | |
37a105a1 | 11953 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11954 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11955 | struct cleanup *showlist_chain; |
11956 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11957 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11958 | |
11959 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11960 | for (; list != NULL; list = list->next) | |
11961 | if (strcmp (list->name, "Z-packet") == 0) | |
11962 | continue; | |
427c3a89 DJ |
11963 | else if (list->type == not_set_cmd) |
11964 | /* Alias commands are exactly like the original, except they | |
11965 | don't have the normal type. */ | |
11966 | continue; | |
11967 | else | |
37a105a1 DJ |
11968 | { |
11969 | struct cleanup *option_chain | |
11970 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11971 | |
37a105a1 DJ |
11972 | ui_out_field_string (uiout, "name", list->name); |
11973 | ui_out_text (uiout, ": "); | |
427c3a89 | 11974 | if (list->type == show_cmd) |
5b9afe8a | 11975 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11976 | else |
11977 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11978 | /* Close the tuple. */ |
11979 | do_cleanups (option_chain); | |
11980 | } | |
427c3a89 DJ |
11981 | |
11982 | /* Close the tuple. */ | |
11983 | do_cleanups (showlist_chain); | |
d471ea57 | 11984 | } |
5a2468f5 | 11985 | |
0f71a2f6 | 11986 | |
23860348 | 11987 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11988 | static void |
11989 | remote_new_objfile (struct objfile *objfile) | |
11990 | { | |
5d93a237 TT |
11991 | struct remote_state *rs = get_remote_state (); |
11992 | ||
11993 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11994 | remote_check_symbols (); |
dc8acb97 MS |
11995 | } |
11996 | ||
00bf0b85 SS |
11997 | /* Pull all the tracepoints defined on the target and create local |
11998 | data structures representing them. We don't want to create real | |
11999 | tracepoints yet, we don't want to mess up the user's existing | |
12000 | collection. */ | |
12001 | ||
12002 | static int | |
ab6617cc | 12003 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12004 | { |
00bf0b85 SS |
12005 | struct remote_state *rs = get_remote_state (); |
12006 | char *p; | |
d5551862 | 12007 | |
00bf0b85 SS |
12008 | /* Ask for a first packet of tracepoint definition. */ |
12009 | putpkt ("qTfP"); | |
12010 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12011 | p = rs->buf; | |
12012 | while (*p && *p != 'l') | |
d5551862 | 12013 | { |
00bf0b85 SS |
12014 | parse_tracepoint_definition (p, utpp); |
12015 | /* Ask for another packet of tracepoint definition. */ | |
12016 | putpkt ("qTsP"); | |
12017 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12018 | p = rs->buf; | |
d5551862 | 12019 | } |
00bf0b85 | 12020 | return 0; |
d5551862 SS |
12021 | } |
12022 | ||
00bf0b85 | 12023 | static int |
181e3713 TT |
12024 | remote_upload_trace_state_variables (struct target_ops *self, |
12025 | struct uploaded_tsv **utsvp) | |
d5551862 | 12026 | { |
00bf0b85 | 12027 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12028 | char *p; |
d5551862 | 12029 | |
00bf0b85 SS |
12030 | /* Ask for a first packet of variable definition. */ |
12031 | putpkt ("qTfV"); | |
d5551862 SS |
12032 | getpkt (&rs->buf, &rs->buf_size, 0); |
12033 | p = rs->buf; | |
00bf0b85 | 12034 | while (*p && *p != 'l') |
d5551862 | 12035 | { |
00bf0b85 SS |
12036 | parse_tsv_definition (p, utsvp); |
12037 | /* Ask for another packet of variable definition. */ | |
12038 | putpkt ("qTsV"); | |
d5551862 SS |
12039 | getpkt (&rs->buf, &rs->buf_size, 0); |
12040 | p = rs->buf; | |
12041 | } | |
00bf0b85 | 12042 | return 0; |
d5551862 SS |
12043 | } |
12044 | ||
c1e36e3e PA |
12045 | /* The "set/show range-stepping" show hook. */ |
12046 | ||
12047 | static void | |
12048 | show_range_stepping (struct ui_file *file, int from_tty, | |
12049 | struct cmd_list_element *c, | |
12050 | const char *value) | |
12051 | { | |
12052 | fprintf_filtered (file, | |
12053 | _("Debugger's willingness to use range stepping " | |
12054 | "is %s.\n"), value); | |
12055 | } | |
12056 | ||
12057 | /* The "set/show range-stepping" set hook. */ | |
12058 | ||
12059 | static void | |
12060 | set_range_stepping (char *ignore_args, int from_tty, | |
12061 | struct cmd_list_element *c) | |
12062 | { | |
5d93a237 TT |
12063 | struct remote_state *rs = get_remote_state (); |
12064 | ||
c1e36e3e PA |
12065 | /* Whene enabling, check whether range stepping is actually |
12066 | supported by the target, and warn if not. */ | |
12067 | if (use_range_stepping) | |
12068 | { | |
5d93a237 | 12069 | if (rs->remote_desc != NULL) |
c1e36e3e | 12070 | { |
4082afcc | 12071 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12072 | remote_vcont_probe (rs); |
12073 | ||
4082afcc | 12074 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12075 | && rs->supports_vCont.r) |
12076 | return; | |
12077 | } | |
12078 | ||
12079 | warning (_("Range stepping is not supported by the current target")); | |
12080 | } | |
12081 | } | |
12082 | ||
c906108c | 12083 | void |
fba45db2 | 12084 | _initialize_remote (void) |
c906108c | 12085 | { |
ea9c271d | 12086 | struct remote_state *rs; |
9a7071a8 | 12087 | struct cmd_list_element *cmd; |
6f937416 | 12088 | const char *cmd_name; |
ea9c271d | 12089 | |
0f71a2f6 | 12090 | /* architecture specific data */ |
2bc416ba | 12091 | remote_gdbarch_data_handle = |
23860348 | 12092 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
12093 | remote_g_packet_data_handle = |
12094 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 12095 | |
ea9c271d DJ |
12096 | /* Initialize the per-target state. At the moment there is only one |
12097 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
12098 | time. */ |
12099 | remote_state = new_remote_state (); | |
ea9c271d | 12100 | |
c906108c SS |
12101 | init_remote_ops (); |
12102 | add_target (&remote_ops); | |
12103 | ||
12104 | init_extended_remote_ops (); | |
12105 | add_target (&extended_remote_ops); | |
cce74817 | 12106 | |
dc8acb97 | 12107 | /* Hook into new objfile notification. */ |
06d3b283 | 12108 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
12109 | /* We're no longer interested in notification events of an inferior |
12110 | when it exits. */ | |
12111 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 12112 | |
b803fb0f | 12113 | /* Set up signal handlers. */ |
934b9bac | 12114 | async_sigint_remote_token = |
b803fb0f | 12115 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 12116 | async_sigint_remote_twice_token = |
6d549500 | 12117 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 12118 | |
c906108c SS |
12119 | #if 0 |
12120 | init_remote_threadtests (); | |
12121 | #endif | |
12122 | ||
722247f1 | 12123 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 12124 | /* set/show remote ... */ |
d471ea57 | 12125 | |
1bedd215 | 12126 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
12127 | Remote protocol specific variables\n\ |
12128 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12129 | the packets being used"), |
cff3e48b | 12130 | &remote_set_cmdlist, "set remote ", |
23860348 | 12131 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 12132 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
12133 | Remote protocol specific variables\n\ |
12134 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12135 | the packets being used"), |
cff3e48b | 12136 | &remote_show_cmdlist, "show remote ", |
23860348 | 12137 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 12138 | |
1a966eab AC |
12139 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
12140 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
12141 | Argument is a single section name (default: all loaded sections).\n\ |
12142 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
12143 | &cmdlist); |
12144 | ||
1a966eab AC |
12145 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
12146 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
12147 | maintenance packet TEXT\n\ |
12148 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12149 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12150 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 12151 | terminating `#' character and checksum."), |
c906108c SS |
12152 | &maintenancelist); |
12153 | ||
7915a72c AC |
12154 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
12155 | Set whether to send break if interrupted."), _("\ | |
12156 | Show whether to send break if interrupted."), _("\ | |
12157 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 12158 | set_remotebreak, show_remotebreak, |
e707bbc2 | 12159 | &setlist, &showlist); |
9a7071a8 JB |
12160 | cmd_name = "remotebreak"; |
12161 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12162 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12163 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12164 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12165 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12166 | ||
12167 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
12168 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12169 | _("\ | |
9a7071a8 JB |
12170 | Set interrupt sequence to remote target."), _("\ |
12171 | Show interrupt sequence to remote target."), _("\ | |
12172 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12173 | NULL, show_interrupt_sequence, | |
12174 | &remote_set_cmdlist, | |
12175 | &remote_show_cmdlist); | |
12176 | ||
12177 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12178 | &interrupt_on_connect, _("\ | |
12179 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12180 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12181 | If set, interrupt sequence is sent to remote target."), | |
12182 | NULL, NULL, | |
12183 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 12184 | |
23860348 | 12185 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 12186 | |
1a966eab AC |
12187 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
12188 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 12189 | &setlist); |
1a966eab AC |
12190 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
12191 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
12192 | &showlist); |
12193 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
12194 | set_memory_write_packet_size, _("\ |
12195 | Set the maximum number of bytes per memory-write packet.\n\ | |
12196 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12197 | default packet size. The actual limit is further reduced\n\ | |
12198 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12199 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12200 | &remote_set_cmdlist); |
12201 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12202 | set_memory_read_packet_size, _("\ |
12203 | Set the maximum number of bytes per memory-read packet.\n\ | |
12204 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12205 | default packet size. The actual limit is further reduced\n\ | |
12206 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12207 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12208 | &remote_set_cmdlist); |
12209 | add_cmd ("memory-write-packet-size", no_class, | |
12210 | show_memory_write_packet_size, | |
1a966eab | 12211 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12212 | &remote_show_cmdlist); |
12213 | add_cmd ("memory-read-packet-size", no_class, | |
12214 | show_memory_read_packet_size, | |
1a966eab | 12215 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12216 | &remote_show_cmdlist); |
c906108c | 12217 | |
b3f42336 | 12218 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12219 | &remote_hw_watchpoint_limit, _("\ |
12220 | Set the maximum number of target hardware watchpoints."), _("\ | |
12221 | Show the maximum number of target hardware watchpoints."), _("\ | |
12222 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12223 | NULL, NULL, /* FIXME: i18n: The maximum |
12224 | number of target hardware | |
12225 | watchpoints is %s. */ | |
b3f42336 | 12226 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12227 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12228 | &remote_hw_watchpoint_length_limit, _("\ | |
12229 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12230 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12231 | Specify a negative limit for unlimited."), | |
12232 | NULL, NULL, /* FIXME: i18n: The maximum | |
12233 | length (in bytes) of a target | |
12234 | hardware watchpoint is %s. */ | |
12235 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12236 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12237 | &remote_hw_breakpoint_limit, _("\ |
12238 | Set the maximum number of target hardware breakpoints."), _("\ | |
12239 | Show the maximum number of target hardware breakpoints."), _("\ | |
12240 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12241 | NULL, NULL, /* FIXME: i18n: The maximum |
12242 | number of target hardware | |
12243 | breakpoints is %s. */ | |
b3f42336 | 12244 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12245 | |
1b493192 PA |
12246 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12247 | &remote_address_size, _("\ | |
4d28ad1e AC |
12248 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12249 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12250 | NULL, |
12251 | NULL, /* FIXME: i18n: */ | |
12252 | &setlist, &showlist); | |
c906108c | 12253 | |
ca4f7f8b PA |
12254 | init_all_packet_configs (); |
12255 | ||
444abaca | 12256 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12257 | "X", "binary-download", 1); |
0f71a2f6 | 12258 | |
444abaca | 12259 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12260 | "vCont", "verbose-resume", 0); |
506fb367 | 12261 | |
89be2091 DJ |
12262 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12263 | "QPassSignals", "pass-signals", 0); | |
12264 | ||
9b224c5e PA |
12265 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12266 | "QProgramSignals", "program-signals", 0); | |
12267 | ||
444abaca | 12268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12269 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12270 | |
444abaca | 12271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12272 | "P", "set-register", 1); |
d471ea57 | 12273 | |
444abaca | 12274 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12275 | "p", "fetch-register", 1); |
b96ec7ac | 12276 | |
444abaca | 12277 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12278 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12279 | |
444abaca | 12280 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12281 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12282 | |
444abaca | 12283 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12284 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12285 | |
444abaca | 12286 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12287 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12288 | |
444abaca | 12289 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12290 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12291 | |
0876f84a DJ |
12292 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12293 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12294 | |
c78fa86a GB |
12295 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
12296 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
12297 | ||
23181151 DJ |
12298 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12299 | "qXfer:features:read", "target-features", 0); | |
12300 | ||
cfa9d6d9 DJ |
12301 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12302 | "qXfer:libraries:read", "library-info", 0); | |
12303 | ||
2268b414 JK |
12304 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12305 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12306 | ||
fd79ecee DJ |
12307 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12308 | "qXfer:memory-map:read", "memory-map", 0); | |
12309 | ||
0e7f50da UW |
12310 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12311 | "qXfer:spu:read", "read-spu-object", 0); | |
12312 | ||
12313 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12314 | "qXfer:spu:write", "write-spu-object", 0); | |
12315 | ||
07e059b5 VP |
12316 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12317 | "qXfer:osdata:read", "osdata", 0); | |
12318 | ||
dc146f7c VP |
12319 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12320 | "qXfer:threads:read", "threads", 0); | |
12321 | ||
4aa995e1 PA |
12322 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12323 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12324 | ||
12325 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12326 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12327 | ||
b3b9301e PA |
12328 | add_packet_config_cmd |
12329 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12330 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12331 | |
169081d0 TG |
12332 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12333 | "qXfer:uib:read", "unwind-info-block", 0); | |
12334 | ||
444abaca | 12335 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12336 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12337 | 0); |
12338 | ||
711e434b PM |
12339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12340 | "qGetTIBAddr", "get-thread-information-block-address", | |
12341 | 0); | |
12342 | ||
40ab02ce MS |
12343 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12344 | "bc", "reverse-continue", 0); | |
12345 | ||
12346 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12347 | "bs", "reverse-step", 0); | |
12348 | ||
be2a5f71 DJ |
12349 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12350 | "qSupported", "supported-packets", 0); | |
12351 | ||
08388c79 DE |
12352 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12353 | "qSearch:memory", "search-memory", 0); | |
12354 | ||
bd3eecc3 PA |
12355 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12356 | "qTStatus", "trace-status", 0); | |
12357 | ||
a6b151f1 DJ |
12358 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12359 | "vFile:open", "hostio-open", 0); | |
12360 | ||
12361 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12362 | "vFile:pread", "hostio-pread", 0); | |
12363 | ||
12364 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12365 | "vFile:pwrite", "hostio-pwrite", 0); | |
12366 | ||
12367 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12368 | "vFile:close", "hostio-close", 0); | |
12369 | ||
12370 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12371 | "vFile:unlink", "hostio-unlink", 0); | |
12372 | ||
b9e7b9c3 UW |
12373 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12374 | "vFile:readlink", "hostio-readlink", 0); | |
12375 | ||
0a93529c GB |
12376 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
12377 | "vFile:fstat", "hostio-fstat", 0); | |
12378 | ||
2d717e4f DJ |
12379 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12380 | "vAttach", "attach", 0); | |
12381 | ||
12382 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12383 | "vRun", "run", 0); | |
12384 | ||
a6f3e723 SL |
12385 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12386 | "QStartNoAckMode", "noack", 0); | |
12387 | ||
82f73884 PA |
12388 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12389 | "vKill", "kill", 0); | |
12390 | ||
0b16c5cf PA |
12391 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12392 | "qAttached", "query-attached", 0); | |
12393 | ||
782b2b07 | 12394 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12395 | "ConditionalTracepoints", |
12396 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12397 | |
12398 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12399 | "ConditionalBreakpoints", | |
12400 | "conditional-breakpoints", 0); | |
12401 | ||
d3ce09f5 SS |
12402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12403 | "BreakpointCommands", | |
12404 | "breakpoint-commands", 0); | |
12405 | ||
7a697b8d SS |
12406 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12407 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12408 | |
409873ef SS |
12409 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12410 | "TracepointSource", "TracepointSource", 0); | |
12411 | ||
d914c394 SS |
12412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12413 | "QAllow", "allow", 0); | |
12414 | ||
0fb4aa4b PA |
12415 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12416 | "StaticTracepoints", "static-tracepoints", 0); | |
12417 | ||
1e4d1764 YQ |
12418 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12419 | "InstallInTrace", "install-in-trace", 0); | |
12420 | ||
0fb4aa4b PA |
12421 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12422 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12423 | ||
78d85199 YQ |
12424 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12425 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12426 | ||
03583c20 UW |
12427 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12428 | "QDisableRandomization", "disable-randomization", 0); | |
12429 | ||
d1feda86 YQ |
12430 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12431 | "QAgent", "agent", 0); | |
12432 | ||
f6f899bf HAQ |
12433 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12434 | "QTBuffer:size", "trace-buffer-size", 0); | |
12435 | ||
9accd112 MM |
12436 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12437 | "Qbtrace:off", "disable-btrace", 0); | |
12438 | ||
12439 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12440 | "Qbtrace:bts", "enable-btrace", 0); | |
12441 | ||
12442 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12443 | "qXfer:btrace", "read-btrace", 0); | |
12444 | ||
f4abbc16 MM |
12445 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
12446 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
12447 | ||
d33501a5 MM |
12448 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
12449 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
12450 | ||
f7e6eed5 PA |
12451 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
12452 | "swbreak-feature", "swbreak-feature", 0); | |
12453 | ||
12454 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
12455 | "hwbreak-feature", "hwbreak-feature", 0); | |
12456 | ||
89245bc0 DB |
12457 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
12458 | "fork-event-feature", "fork-event-feature", 0); | |
12459 | ||
12460 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
12461 | "vfork-event-feature", "vfork-event-feature", 0); | |
12462 | ||
0b736949 DB |
12463 | /* Assert that we've registered "set remote foo-packet" commands |
12464 | for all packet configs. */ | |
ca4f7f8b PA |
12465 | { |
12466 | int i; | |
12467 | ||
12468 | for (i = 0; i < PACKET_MAX; i++) | |
12469 | { | |
12470 | /* Ideally all configs would have a command associated. Some | |
12471 | still don't though. */ | |
12472 | int excepted; | |
12473 | ||
12474 | switch (i) | |
12475 | { | |
12476 | case PACKET_QNonStop: | |
12477 | case PACKET_multiprocess_feature: | |
12478 | case PACKET_EnableDisableTracepoints_feature: | |
12479 | case PACKET_tracenz_feature: | |
12480 | case PACKET_DisconnectedTracing_feature: | |
12481 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
12482 | case PACKET_qCRC: |
12483 | /* Additions to this list need to be well justified: | |
12484 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
12485 | excepted = 1; |
12486 | break; | |
12487 | default: | |
12488 | excepted = 0; | |
12489 | break; | |
12490 | } | |
12491 | ||
12492 | /* This catches both forgetting to add a config command, and | |
12493 | forgetting to remove a packet from the exception list. */ | |
12494 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
12495 | } | |
12496 | } | |
12497 | ||
37a105a1 DJ |
12498 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12499 | Z sub-packet has its own set and show commands, but users may | |
12500 | have sets to this variable in their .gdbinit files (or in their | |
12501 | documentation). */ | |
e9e68a56 | 12502 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12503 | &remote_Z_packet_detect, _("\ |
12504 | Set use of remote protocol `Z' packets"), _("\ | |
12505 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12506 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12507 | packets."), |
e9e68a56 | 12508 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12509 | show_remote_protocol_Z_packet_cmd, |
12510 | /* FIXME: i18n: Use of remote protocol | |
12511 | `Z' packets is %s. */ | |
e9e68a56 | 12512 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12513 | |
a6b151f1 DJ |
12514 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12515 | Manipulate files on the remote system\n\ | |
12516 | Transfer files to and from the remote target system."), | |
12517 | &remote_cmdlist, "remote ", | |
12518 | 0 /* allow-unknown */, &cmdlist); | |
12519 | ||
12520 | add_cmd ("put", class_files, remote_put_command, | |
12521 | _("Copy a local file to the remote system."), | |
12522 | &remote_cmdlist); | |
12523 | ||
12524 | add_cmd ("get", class_files, remote_get_command, | |
12525 | _("Copy a remote file to the local system."), | |
12526 | &remote_cmdlist); | |
12527 | ||
12528 | add_cmd ("delete", class_files, remote_delete_command, | |
12529 | _("Delete a remote file."), | |
12530 | &remote_cmdlist); | |
12531 | ||
2d717e4f DJ |
12532 | remote_exec_file = xstrdup (""); |
12533 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12534 | &remote_exec_file, _("\ | |
12535 | Set the remote pathname for \"run\""), _("\ | |
12536 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12537 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12538 | ||
c1e36e3e PA |
12539 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12540 | &use_range_stepping, _("\ | |
12541 | Enable or disable range stepping."), _("\ | |
12542 | Show whether target-assisted range stepping is enabled."), _("\ | |
12543 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12544 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12545 | of issuing multiple single-steps. This speeds up source level\n\ | |
12546 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12547 | stepping is supported by the target. The default is on."), | |
12548 | set_range_stepping, | |
12549 | show_range_stepping, | |
12550 | &setlist, | |
12551 | &showlist); | |
12552 | ||
449092f6 CV |
12553 | /* Eventually initialize fileio. See fileio.c */ |
12554 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 12555 | |
ba348170 | 12556 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 12557 | special ptids with it set to != 0. */ |
ba348170 PA |
12558 | magic_null_ptid = ptid_build (42000, -1, 1); |
12559 | not_sent_ptid = ptid_build (42000, -2, 1); | |
12560 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
12561 | |
12562 | target_buf_size = 2048; | |
12563 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12564 | } |
10760264 | 12565 |