Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1988-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
0e9f083f | 23 | #include <string.h> |
c906108c SS |
24 | #include <ctype.h> |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
722247f1 | 37 | #include "remote-notif.h" |
4e052eda | 38 | #include "regcache.h" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
6867ae3e | 41 | #include "observer.h" |
a77053c2 | 42 | #include "solib.h" |
37a105a1 DJ |
43 | #include "cli/cli-decode.h" |
44 | #include "cli/cli-setshow.h" | |
424163ea | 45 | #include "target-descriptions.h" |
a4453b7e | 46 | #include "gdb_bfd.h" |
614c279d | 47 | #include "filestuff.h" |
9c3d6531 | 48 | #include "rsp-low.h" |
c906108c | 49 | |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
934b9bac | 91 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 92 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 93 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 94 | int forever, int *is_notif); |
6426a772 | 95 | |
934b9bac JK |
96 | static void async_handle_remote_sigint (int); |
97 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
f32dbf8c MM |
101 | static void remote_prepare_to_store (struct target_ops *self, |
102 | struct regcache *regcache); | |
c906108c | 103 | |
a14ed312 | 104 | static void remote_open (char *name, int from_tty); |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 107 | |
75c99385 | 108 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 109 | |
de90e03d | 110 | static void remote_close (struct target_ops *self); |
c906108c | 111 | |
136d6dae | 112 | static void remote_mourn (struct target_ops *ops); |
c906108c | 113 | |
a14ed312 | 114 | static void extended_remote_restart (void); |
c906108c | 115 | |
136d6dae | 116 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 117 | |
a14ed312 | 118 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 119 | |
6d820c5c | 120 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 121 | |
a14ed312 | 122 | static int readchar (int timeout); |
c906108c | 123 | |
c33e31fd PA |
124 | static void remote_serial_write (const char *str, int len); |
125 | ||
7d85a9c0 | 126 | static void remote_kill (struct target_ops *ops); |
c906108c | 127 | |
6a109b6b | 128 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 129 | |
6a109b6b | 130 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 131 | |
6a109b6b TT |
132 | static void remote_async (struct target_ops *ops, |
133 | void (*callback) (enum inferior_event_type event_type, | |
134 | void *context), | |
135 | void *context); | |
75c99385 | 136 | |
934b9bac | 137 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
79d7f229 PA |
141 | static void set_general_thread (struct ptid ptid); |
142 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
1eab8a48 | 156 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 157 | |
a14ed312 | 158 | static int stubhex (int ch); |
c906108c | 159 | |
a14ed312 | 160 | static int hexnumstr (char *, ULONGEST); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 163 | |
a14ed312 | 164 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 165 | |
a14ed312 | 166 | static void print_packet (char *); |
c906108c | 167 | |
a14ed312 | 168 | static void compare_sections_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void packet_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 173 | |
39f77062 | 174 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 175 | |
a14ed312 | 176 | static void remote_find_new_threads (void); |
c906108c | 177 | |
a14ed312 | 178 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 179 | |
a14ed312 | 180 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 181 | |
5a2468f5 | 182 | struct packet_config; |
5a2468f5 | 183 | |
a14ed312 | 184 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 185 | |
bb572ddd DJ |
186 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
187 | int from_tty, | |
188 | struct cmd_list_element *c, | |
189 | const char *value); | |
190 | ||
82f73884 PA |
191 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
192 | static ptid_t read_ptid (char *buf, char **obuf); | |
193 | ||
c378d69d | 194 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 195 | |
d5551862 | 196 | struct remote_state; |
8bd200f1 TT |
197 | static int remote_get_trace_status (struct target_ops *self, |
198 | struct trace_status *ts); | |
d5551862 | 199 | |
ab6617cc TT |
200 | static int remote_upload_tracepoints (struct target_ops *self, |
201 | struct uploaded_tp **utpp); | |
00bf0b85 | 202 | |
181e3713 TT |
203 | static int remote_upload_trace_state_variables (struct target_ops *self, |
204 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 205 | |
c8d104ad PA |
206 | static void remote_query_supported (void); |
207 | ||
36d25514 | 208 | static void remote_check_symbols (void); |
c8d104ad | 209 | |
a14ed312 | 210 | void _initialize_remote (void); |
c906108c | 211 | |
74531fed | 212 | struct stop_reply; |
74531fed | 213 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 214 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 215 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 216 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
217 | static int peek_stop_reply (ptid_t ptid); |
218 | ||
219 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 220 | |
e3594fd1 | 221 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 222 | |
d962ef82 DJ |
223 | static int remote_read_description_p (struct target_ops *target); |
224 | ||
176a6961 | 225 | static void remote_console_output (char *msg); |
dde08ee1 | 226 | |
efcc2da7 | 227 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 228 | |
78eff0ec | 229 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 230 | |
a6b151f1 DJ |
231 | /* For "remote". */ |
232 | ||
233 | static struct cmd_list_element *remote_cmdlist; | |
234 | ||
bb572ddd DJ |
235 | /* For "set remote" and "show remote". */ |
236 | ||
237 | static struct cmd_list_element *remote_set_cmdlist; | |
238 | static struct cmd_list_element *remote_show_cmdlist; | |
239 | ||
d458bd84 PA |
240 | /* Stub vCont actions support. |
241 | ||
242 | Each field is a boolean flag indicating whether the stub reports | |
243 | support for the corresponding action. */ | |
244 | ||
245 | struct vCont_action_support | |
246 | { | |
247 | /* vCont;t */ | |
248 | int t; | |
c1e36e3e PA |
249 | |
250 | /* vCont;r */ | |
251 | int r; | |
d458bd84 PA |
252 | }; |
253 | ||
c1e36e3e PA |
254 | /* Controls whether GDB is willing to use range stepping. */ |
255 | ||
256 | static int use_range_stepping = 1; | |
257 | ||
0d031856 TT |
258 | #define OPAQUETHREADBYTES 8 |
259 | ||
260 | /* a 64 bit opaque identifier */ | |
261 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
262 | ||
263 | /* About this many threadisds fit in a packet. */ | |
264 | ||
265 | #define MAXTHREADLISTRESULTS 32 | |
266 | ||
ea9c271d DJ |
267 | /* Description of the remote protocol state for the currently |
268 | connected target. This is per-target state, and independent of the | |
269 | selected architecture. */ | |
270 | ||
271 | struct remote_state | |
272 | { | |
273 | /* A buffer to use for incoming packets, and its current size. The | |
274 | buffer is grown dynamically for larger incoming packets. | |
275 | Outgoing packets may also be constructed in this buffer. | |
276 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
277 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
278 | packets. */ | |
279 | char *buf; | |
280 | long buf_size; | |
be2a5f71 | 281 | |
1e51243a PA |
282 | /* True if we're going through initial connection setup (finding out |
283 | about the remote side's threads, relocating symbols, etc.). */ | |
284 | int starting_up; | |
285 | ||
be2a5f71 DJ |
286 | /* If we negotiated packet size explicitly (and thus can bypass |
287 | heuristics for the largest packet size that will not overflow | |
288 | a buffer in the stub), this will be set to that packet size. | |
289 | Otherwise zero, meaning to use the guessed size. */ | |
290 | long explicit_packet_size; | |
2d717e4f DJ |
291 | |
292 | /* remote_wait is normally called when the target is running and | |
293 | waits for a stop reply packet. But sometimes we need to call it | |
294 | when the target is already stopped. We can send a "?" packet | |
295 | and have remote_wait read the response. Or, if we already have | |
296 | the response, we can stash it in BUF and tell remote_wait to | |
297 | skip calling getpkt. This flag is set when BUF contains a | |
298 | stop reply packet and the target is not waiting. */ | |
299 | int cached_wait_status; | |
a6f3e723 SL |
300 | |
301 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
302 | expect acks from each other. The connection is assumed to be | |
303 | reliable. */ | |
304 | int noack_mode; | |
82f73884 PA |
305 | |
306 | /* True if we're connected in extended remote mode. */ | |
307 | int extended; | |
308 | ||
e24a49d8 PA |
309 | /* True if we resumed the target and we're waiting for the target to |
310 | stop. In the mean time, we can't start another command/query. | |
311 | The remote server wouldn't be ready to process it, so we'd | |
312 | timeout waiting for a reply that would never come and eventually | |
313 | we'd close the connection. This can happen in asynchronous mode | |
314 | because we allow GDB commands while the target is running. */ | |
315 | int waiting_for_stop_reply; | |
74531fed | 316 | |
d458bd84 PA |
317 | /* The status of the stub support for the various vCont actions. */ |
318 | struct vCont_action_support supports_vCont; | |
782b2b07 | 319 | |
3a29589a DJ |
320 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
321 | responded to that. */ | |
322 | int ctrlc_pending_p; | |
5d93a237 TT |
323 | |
324 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
325 | remote_open knows that we don't have a file open when the program | |
326 | starts. */ | |
327 | struct serial *remote_desc; | |
47f8a51d TT |
328 | |
329 | /* These are the threads which we last sent to the remote system. The | |
330 | TID member will be -1 for all or -2 for not sent yet. */ | |
331 | ptid_t general_thread; | |
332 | ptid_t continue_thread; | |
262e1174 TT |
333 | |
334 | /* This is the traceframe which we last selected on the remote system. | |
335 | It will be -1 if no traceframe is selected. */ | |
336 | int remote_traceframe_number; | |
747dc59d TT |
337 | |
338 | char *last_pass_packet; | |
5e4a05c4 TT |
339 | |
340 | /* The last QProgramSignals packet sent to the target. We bypass | |
341 | sending a new program signals list down to the target if the new | |
342 | packet is exactly the same as the last we sent. IOW, we only let | |
343 | the target know about program signals list changes. */ | |
344 | char *last_program_signals_packet; | |
b73be471 TT |
345 | |
346 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
347 | |
348 | int last_sent_step; | |
8e88304f TT |
349 | |
350 | char *finished_object; | |
351 | char *finished_annex; | |
352 | ULONGEST finished_offset; | |
b80fafe3 TT |
353 | |
354 | /* Should we try the 'ThreadInfo' query packet? | |
355 | ||
356 | This variable (NOT available to the user: auto-detect only!) | |
357 | determines whether GDB will use the new, simpler "ThreadInfo" | |
358 | query or the older, more complex syntax for thread queries. | |
359 | This is an auto-detect variable (set to true at each connect, | |
360 | and set to false when the target fails to recognize it). */ | |
361 | int use_threadinfo_query; | |
362 | int use_threadextra_query; | |
88b496c3 TT |
363 | |
364 | void (*async_client_callback) (enum inferior_event_type event_type, | |
365 | void *context); | |
366 | void *async_client_context; | |
ee154bee TT |
367 | |
368 | /* This is set to the data address of the access causing the target | |
369 | to stop for a watchpoint. */ | |
370 | CORE_ADDR remote_watch_data_address; | |
371 | ||
372 | /* This is non-zero if target stopped for a watchpoint. */ | |
373 | int remote_stopped_by_watchpoint_p; | |
0d031856 TT |
374 | |
375 | threadref echo_nextthread; | |
376 | threadref nextthread; | |
377 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
378 | |
379 | /* The state of remote notification. */ | |
380 | struct remote_notif_state *notif_state; | |
ea9c271d DJ |
381 | }; |
382 | ||
dc146f7c VP |
383 | /* Private data that we'll store in (struct thread_info)->private. */ |
384 | struct private_thread_info | |
385 | { | |
386 | char *extra; | |
387 | int core; | |
388 | }; | |
389 | ||
390 | static void | |
391 | free_private_thread_info (struct private_thread_info *info) | |
392 | { | |
393 | xfree (info->extra); | |
394 | xfree (info); | |
395 | } | |
396 | ||
ea9c271d DJ |
397 | /* This data could be associated with a target, but we do not always |
398 | have access to the current target when we need it, so for now it is | |
399 | static. This will be fine for as long as only one target is in use | |
400 | at a time. */ | |
cf792862 | 401 | static struct remote_state *remote_state; |
ea9c271d DJ |
402 | |
403 | static struct remote_state * | |
0b83947e | 404 | get_remote_state_raw (void) |
ea9c271d | 405 | { |
cf792862 TT |
406 | return remote_state; |
407 | } | |
408 | ||
409 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
410 | return it. */ | |
411 | ||
412 | static struct remote_state * | |
413 | new_remote_state (void) | |
414 | { | |
415 | struct remote_state *result = XCNEW (struct remote_state); | |
416 | ||
417 | /* The default buffer size is unimportant; it will be expanded | |
418 | whenever a larger buffer is needed. */ | |
419 | result->buf_size = 400; | |
420 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 421 | result->remote_traceframe_number = -1; |
b73be471 | 422 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
423 | |
424 | return result; | |
ea9c271d DJ |
425 | } |
426 | ||
427 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 428 | |
ad10f812 AC |
429 | struct packet_reg |
430 | { | |
431 | long offset; /* Offset into G packet. */ | |
432 | long regnum; /* GDB's internal register number. */ | |
433 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 434 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 435 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 436 | at present. */ |
f5656ead | 437 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 438 | at present. */ |
ad10f812 AC |
439 | }; |
440 | ||
ea9c271d | 441 | struct remote_arch_state |
d01949b6 | 442 | { |
ad10f812 AC |
443 | /* Description of the remote protocol registers. */ |
444 | long sizeof_g_packet; | |
b323314b AC |
445 | |
446 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 447 | (making an array gdbarch_num_regs in size). */ |
b323314b | 448 | struct packet_reg *regs; |
ad10f812 | 449 | |
d01949b6 AC |
450 | /* This is the size (in chars) of the first response to the ``g'' |
451 | packet. It is used as a heuristic when determining the maximum | |
452 | size of memory-read and memory-write packets. A target will | |
453 | typically only reserve a buffer large enough to hold the ``g'' | |
454 | packet. The size does not include packet overhead (headers and | |
23860348 | 455 | trailers). */ |
d01949b6 AC |
456 | long actual_register_packet_size; |
457 | ||
458 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 459 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
460 | long remote_packet_size; |
461 | }; | |
462 | ||
35b1e5cc SS |
463 | /* Utility: generate error from an incoming stub packet. */ |
464 | static void | |
465 | trace_error (char *buf) | |
466 | { | |
467 | if (*buf++ != 'E') | |
468 | return; /* not an error msg */ | |
469 | switch (*buf) | |
470 | { | |
471 | case '1': /* malformed packet error */ | |
472 | if (*++buf == '0') /* general case: */ | |
473 | error (_("remote.c: error in outgoing packet.")); | |
474 | else | |
475 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
476 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
477 | default: |
478 | error (_("Target returns error code '%s'."), buf); | |
479 | } | |
480 | } | |
481 | ||
482 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
483 | static char * | |
484 | remote_get_noisy_reply (char **buf_p, | |
485 | long *sizeof_buf) | |
486 | { | |
487 | do /* Loop on reply from remote stub. */ | |
488 | { | |
489 | char *buf; | |
a744cf53 | 490 | |
0df8b418 | 491 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
492 | getpkt (buf_p, sizeof_buf, 0); |
493 | buf = *buf_p; | |
ad91cd99 | 494 | if (buf[0] == 'E') |
35b1e5cc | 495 | trace_error (buf); |
dde08ee1 PA |
496 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
497 | { | |
498 | ULONGEST ul; | |
499 | CORE_ADDR from, to, org_to; | |
500 | char *p, *pp; | |
501 | int adjusted_size = 0; | |
502 | volatile struct gdb_exception ex; | |
503 | ||
504 | p = buf + strlen ("qRelocInsn:"); | |
505 | pp = unpack_varlen_hex (p, &ul); | |
506 | if (*pp != ';') | |
cb91c06a | 507 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
508 | from = ul; |
509 | ||
510 | p = pp + 1; | |
a9cbf802 | 511 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
512 | to = ul; |
513 | ||
514 | org_to = to; | |
515 | ||
516 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
517 | { | |
f5656ead | 518 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
519 | } |
520 | if (ex.reason >= 0) | |
521 | { | |
522 | adjusted_size = to - org_to; | |
523 | ||
bba74b36 | 524 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
525 | putpkt (buf); |
526 | } | |
527 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
528 | { | |
529 | /* Propagate memory errors silently back to the target. | |
530 | The stub may have limited the range of addresses we | |
531 | can write to, for example. */ | |
532 | putpkt ("E01"); | |
533 | } | |
534 | else | |
535 | { | |
536 | /* Something unexpectedly bad happened. Be verbose so | |
537 | we can tell what, and propagate the error back to the | |
538 | stub, so it doesn't get stuck waiting for a | |
539 | response. */ | |
540 | exception_fprintf (gdb_stderr, ex, | |
541 | _("warning: relocating instruction: ")); | |
542 | putpkt ("E01"); | |
543 | } | |
544 | } | |
ad91cd99 | 545 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
546 | remote_console_output (buf + 1); /* 'O' message from stub */ |
547 | else | |
0df8b418 | 548 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
549 | } |
550 | while (1); | |
551 | } | |
3c3bea1c | 552 | |
d01949b6 AC |
553 | /* Handle for retreving the remote protocol data from gdbarch. */ |
554 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
555 | ||
ea9c271d DJ |
556 | static struct remote_arch_state * |
557 | get_remote_arch_state (void) | |
d01949b6 | 558 | { |
f5656ead | 559 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
560 | } |
561 | ||
0b83947e DJ |
562 | /* Fetch the global remote target state. */ |
563 | ||
564 | static struct remote_state * | |
565 | get_remote_state (void) | |
566 | { | |
567 | /* Make sure that the remote architecture state has been | |
568 | initialized, because doing so might reallocate rs->buf. Any | |
569 | function which calls getpkt also needs to be mindful of changes | |
570 | to rs->buf, but this call limits the number of places which run | |
571 | into trouble. */ | |
572 | get_remote_arch_state (); | |
573 | ||
574 | return get_remote_state_raw (); | |
575 | } | |
576 | ||
74ca34ce DJ |
577 | static int |
578 | compare_pnums (const void *lhs_, const void *rhs_) | |
579 | { | |
580 | const struct packet_reg * const *lhs = lhs_; | |
581 | const struct packet_reg * const *rhs = rhs_; | |
582 | ||
583 | if ((*lhs)->pnum < (*rhs)->pnum) | |
584 | return -1; | |
585 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
586 | return 0; | |
587 | else | |
588 | return 1; | |
589 | } | |
590 | ||
c21236dc PA |
591 | static int |
592 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 593 | { |
74ca34ce | 594 | int regnum, num_remote_regs, offset; |
74ca34ce | 595 | struct packet_reg **remote_regs; |
ea9c271d | 596 | |
4a22f64d | 597 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 598 | { |
c21236dc | 599 | struct packet_reg *r = ®s[regnum]; |
baef701f | 600 | |
4a22f64d | 601 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
602 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
603 | r->pnum = -1; | |
604 | else | |
605 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
606 | ||
b323314b | 607 | r->regnum = regnum; |
74ca34ce DJ |
608 | } |
609 | ||
610 | /* Define the g/G packet format as the contents of each register | |
611 | with a remote protocol number, in order of ascending protocol | |
612 | number. */ | |
613 | ||
4a22f64d | 614 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 615 | * sizeof (struct packet_reg *)); |
f57d151a | 616 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 617 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 618 | regnum++) |
c21236dc PA |
619 | if (regs[regnum].pnum != -1) |
620 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 621 | |
74ca34ce DJ |
622 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
623 | compare_pnums); | |
624 | ||
625 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
626 | { | |
627 | remote_regs[regnum]->in_g_packet = 1; | |
628 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 629 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
630 | } |
631 | ||
c21236dc PA |
632 | return offset; |
633 | } | |
634 | ||
635 | /* Given the architecture described by GDBARCH, return the remote | |
636 | protocol register's number and the register's offset in the g/G | |
637 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
638 | If the target does not have a mapping for REGNUM, return false, | |
639 | otherwise, return true. */ | |
640 | ||
641 | int | |
642 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
643 | int *pnum, int *poffset) | |
644 | { | |
645 | int sizeof_g_packet; | |
646 | struct packet_reg *regs; | |
647 | struct cleanup *old_chain; | |
648 | ||
649 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
650 | ||
651 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
652 | old_chain = make_cleanup (xfree, regs); | |
653 | ||
654 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
655 | ||
656 | *pnum = regs[regnum].pnum; | |
657 | *poffset = regs[regnum].offset; | |
658 | ||
659 | do_cleanups (old_chain); | |
660 | ||
661 | return *pnum != -1; | |
662 | } | |
663 | ||
664 | static void * | |
665 | init_remote_state (struct gdbarch *gdbarch) | |
666 | { | |
667 | struct remote_state *rs = get_remote_state_raw (); | |
668 | struct remote_arch_state *rsa; | |
669 | ||
670 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
671 | ||
672 | /* Use the architecture to build a regnum<->pnum table, which will be | |
673 | 1:1 unless a feature set specifies otherwise. */ | |
674 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
675 | gdbarch_num_regs (gdbarch), | |
676 | struct packet_reg); | |
677 | ||
74ca34ce DJ |
678 | /* Record the maximum possible size of the g packet - it may turn out |
679 | to be smaller. */ | |
c21236dc | 680 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 681 | |
0df8b418 | 682 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
683 | remote stubs have a hardwired buffer size of 400 bytes |
684 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
685 | as the maximum packet-size to ensure that the packet and an extra | |
686 | NUL character can always fit in the buffer. This stops GDB | |
687 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
688 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
689 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 690 | |
ea9c271d DJ |
691 | /* This one is filled in when a ``g'' packet is received. */ |
692 | rsa->actual_register_packet_size = 0; | |
693 | ||
694 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
695 | default, adjust the size accordingly. Remember that each byte is |
696 | encoded as two characters. 32 is the overhead for the packet | |
697 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 698 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 699 | little. */ |
ea9c271d DJ |
700 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
701 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 702 | |
ea9c271d DJ |
703 | /* Make sure that the packet buffer is plenty big enough for |
704 | this architecture. */ | |
705 | if (rs->buf_size < rsa->remote_packet_size) | |
706 | { | |
707 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 708 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 709 | } |
6d820c5c | 710 | |
ea9c271d DJ |
711 | return rsa; |
712 | } | |
713 | ||
714 | /* Return the current allowed size of a remote packet. This is | |
715 | inferred from the current architecture, and should be used to | |
716 | limit the length of outgoing packets. */ | |
717 | static long | |
718 | get_remote_packet_size (void) | |
719 | { | |
be2a5f71 | 720 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
721 | struct remote_arch_state *rsa = get_remote_arch_state (); |
722 | ||
be2a5f71 DJ |
723 | if (rs->explicit_packet_size) |
724 | return rs->explicit_packet_size; | |
725 | ||
ea9c271d | 726 | return rsa->remote_packet_size; |
d01949b6 AC |
727 | } |
728 | ||
ad10f812 | 729 | static struct packet_reg * |
ea9c271d | 730 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 731 | { |
f5656ead | 732 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
733 | return NULL; |
734 | else | |
ad10f812 | 735 | { |
ea9c271d | 736 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 737 | |
b323314b AC |
738 | gdb_assert (r->regnum == regnum); |
739 | return r; | |
ad10f812 | 740 | } |
ad10f812 AC |
741 | } |
742 | ||
743 | static struct packet_reg * | |
ea9c271d | 744 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 745 | { |
b323314b | 746 | int i; |
a744cf53 | 747 | |
f5656ead | 748 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 749 | { |
ea9c271d | 750 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 751 | |
b323314b AC |
752 | if (r->pnum == pnum) |
753 | return r; | |
ad10f812 AC |
754 | } |
755 | return NULL; | |
d01949b6 AC |
756 | } |
757 | ||
c906108c SS |
758 | static struct target_ops remote_ops; |
759 | ||
760 | static struct target_ops extended_remote_ops; | |
761 | ||
6426a772 JM |
762 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
763 | ``forever'' still use the normal timeout mechanism. This is | |
764 | currently used by the ASYNC code to guarentee that target reads | |
765 | during the initial connect always time-out. Once getpkt has been | |
766 | modified to return a timeout indication and, in turn | |
767 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 768 | this can go away. */ |
6426a772 JM |
769 | static int wait_forever_enabled_p = 1; |
770 | ||
9a7071a8 JB |
771 | /* Allow the user to specify what sequence to send to the remote |
772 | when he requests a program interruption: Although ^C is usually | |
773 | what remote systems expect (this is the default, here), it is | |
774 | sometimes preferable to send a break. On other systems such | |
775 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
776 | is required in order to interrupt the execution. */ | |
777 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
778 | const char interrupt_sequence_break[] = "BREAK"; | |
779 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 780 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
781 | { |
782 | interrupt_sequence_control_c, | |
783 | interrupt_sequence_break, | |
784 | interrupt_sequence_break_g, | |
785 | NULL | |
786 | }; | |
787 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
788 | ||
789 | static void | |
790 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
791 | struct cmd_list_element *c, | |
792 | const char *value) | |
793 | { | |
794 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
795 | fprintf_filtered (file, | |
796 | _("Send the ASCII ETX character (Ctrl-c) " | |
797 | "to the remote target to interrupt the " | |
798 | "execution of the program.\n")); | |
799 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
800 | fprintf_filtered (file, | |
801 | _("send a break signal to the remote target " | |
802 | "to interrupt the execution of the program.\n")); | |
803 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
804 | fprintf_filtered (file, | |
805 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
806 | "the remote target to interrupt the execution " | |
807 | "of Linux kernel.\n")); | |
808 | else | |
809 | internal_error (__FILE__, __LINE__, | |
810 | _("Invalid value for interrupt_sequence_mode: %s."), | |
811 | interrupt_sequence_mode); | |
812 | } | |
6426a772 | 813 | |
9a7071a8 JB |
814 | /* This boolean variable specifies whether interrupt_sequence is sent |
815 | to the remote target when gdb connects to it. | |
816 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
817 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
818 | static int interrupt_on_connect = 0; | |
c906108c | 819 | |
9a7071a8 JB |
820 | /* This variable is used to implement the "set/show remotebreak" commands. |
821 | Since these commands are now deprecated in favor of "set/show remote | |
822 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
823 | static int remote_break; |
824 | ||
9a7071a8 JB |
825 | static void |
826 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
827 | { | |
828 | if (remote_break) | |
829 | interrupt_sequence_mode = interrupt_sequence_break; | |
830 | else | |
831 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
832 | } | |
833 | ||
834 | static void | |
835 | show_remotebreak (struct ui_file *file, int from_tty, | |
836 | struct cmd_list_element *c, | |
837 | const char *value) | |
838 | { | |
839 | } | |
840 | ||
c906108c SS |
841 | /* This variable sets the number of bits in an address that are to be |
842 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 843 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
844 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
845 | initial implementation of remote.c restricted the address sent in | |
846 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
847 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
848 | address was never sent. Since fixing this bug may cause a break in | |
849 | some remote targets this variable is principly provided to | |
23860348 | 850 | facilitate backward compatibility. */ |
c906108c | 851 | |
883b9c6c | 852 | static unsigned int remote_address_size; |
c906108c | 853 | |
75c99385 PA |
854 | /* Temporary to track who currently owns the terminal. See |
855 | remote_terminal_* for more details. */ | |
6426a772 JM |
856 | |
857 | static int remote_async_terminal_ours_p; | |
858 | ||
2d717e4f DJ |
859 | /* The executable file to use for "run" on the remote side. */ |
860 | ||
861 | static char *remote_exec_file = ""; | |
862 | ||
11cf8741 | 863 | \f |
11cf8741 | 864 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
865 | memory read/write packet. MIN (rsa->remote_packet_size, |
866 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 867 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
868 | (speed up transfers). The variables ``preferred_*'' (the user |
869 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 870 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
871 | |
872 | struct memory_packet_config | |
873 | { | |
874 | char *name; | |
875 | long size; | |
876 | int fixed_p; | |
877 | }; | |
878 | ||
879 | /* Compute the current size of a read/write packet. Since this makes | |
880 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
881 | ||
882 | static long | |
883 | get_memory_packet_size (struct memory_packet_config *config) | |
884 | { | |
d01949b6 | 885 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
886 | struct remote_arch_state *rsa = get_remote_arch_state (); |
887 | ||
11cf8741 JM |
888 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
889 | law?) that some hosts don't cope very well with large alloca() | |
890 | calls. Eventually the alloca() code will be replaced by calls to | |
891 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 892 | be lifted or removed. */ |
11cf8741 JM |
893 | #ifndef MAX_REMOTE_PACKET_SIZE |
894 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
895 | #endif | |
3de11b2e | 896 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 897 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 898 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
899 | #endif |
900 | long what_they_get; | |
901 | if (config->fixed_p) | |
902 | { | |
903 | if (config->size <= 0) | |
904 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
905 | else | |
906 | what_they_get = config->size; | |
907 | } | |
908 | else | |
909 | { | |
ea9c271d | 910 | what_they_get = get_remote_packet_size (); |
23860348 | 911 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
912 | if (config->size > 0 |
913 | && what_they_get > config->size) | |
914 | what_they_get = config->size; | |
be2a5f71 DJ |
915 | |
916 | /* Limit it to the size of the targets ``g'' response unless we have | |
917 | permission from the stub to use a larger packet size. */ | |
918 | if (rs->explicit_packet_size == 0 | |
919 | && rsa->actual_register_packet_size > 0 | |
920 | && what_they_get > rsa->actual_register_packet_size) | |
921 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
922 | } |
923 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
924 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
925 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
926 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
927 | |
928 | /* Make sure there is room in the global buffer for this packet | |
929 | (including its trailing NUL byte). */ | |
930 | if (rs->buf_size < what_they_get + 1) | |
931 | { | |
932 | rs->buf_size = 2 * what_they_get; | |
933 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
934 | } | |
935 | ||
11cf8741 JM |
936 | return what_they_get; |
937 | } | |
938 | ||
0df8b418 | 939 | /* Update the size of a read/write packet. If they user wants |
23860348 | 940 | something really big then do a sanity check. */ |
11cf8741 JM |
941 | |
942 | static void | |
943 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
944 | { | |
945 | int fixed_p = config->fixed_p; | |
946 | long size = config->size; | |
a744cf53 | 947 | |
11cf8741 | 948 | if (args == NULL) |
8a3fe4f8 | 949 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
950 | else if (strcmp (args, "hard") == 0 |
951 | || strcmp (args, "fixed") == 0) | |
952 | fixed_p = 1; | |
953 | else if (strcmp (args, "soft") == 0 | |
954 | || strcmp (args, "limit") == 0) | |
955 | fixed_p = 0; | |
956 | else | |
957 | { | |
958 | char *end; | |
a744cf53 | 959 | |
11cf8741 JM |
960 | size = strtoul (args, &end, 0); |
961 | if (args == end) | |
8a3fe4f8 | 962 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
963 | #if 0 |
964 | /* Instead of explicitly capping the size of a packet to | |
965 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
966 | instead allowed to set the size to something arbitrarily | |
23860348 | 967 | large. */ |
11cf8741 | 968 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 969 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
970 | #endif |
971 | } | |
23860348 | 972 | /* Extra checks? */ |
11cf8741 JM |
973 | if (fixed_p && !config->fixed_p) |
974 | { | |
e2e0b3e5 AC |
975 | if (! query (_("The target may not be able to correctly handle a %s\n" |
976 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 977 | config->name, size)) |
8a3fe4f8 | 978 | error (_("Packet size not changed.")); |
11cf8741 | 979 | } |
23860348 | 980 | /* Update the config. */ |
11cf8741 JM |
981 | config->fixed_p = fixed_p; |
982 | config->size = size; | |
983 | } | |
984 | ||
985 | static void | |
986 | show_memory_packet_size (struct memory_packet_config *config) | |
987 | { | |
a3f17187 | 988 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 989 | if (config->fixed_p) |
a3f17187 | 990 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
991 | get_memory_packet_size (config)); |
992 | else | |
a3f17187 | 993 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
994 | get_memory_packet_size (config)); |
995 | } | |
996 | ||
997 | static struct memory_packet_config memory_write_packet_config = | |
998 | { | |
999 | "memory-write-packet-size", | |
1000 | }; | |
1001 | ||
1002 | static void | |
1003 | set_memory_write_packet_size (char *args, int from_tty) | |
1004 | { | |
1005 | set_memory_packet_size (args, &memory_write_packet_config); | |
1006 | } | |
1007 | ||
1008 | static void | |
1009 | show_memory_write_packet_size (char *args, int from_tty) | |
1010 | { | |
1011 | show_memory_packet_size (&memory_write_packet_config); | |
1012 | } | |
1013 | ||
1014 | static long | |
1015 | get_memory_write_packet_size (void) | |
1016 | { | |
1017 | return get_memory_packet_size (&memory_write_packet_config); | |
1018 | } | |
1019 | ||
1020 | static struct memory_packet_config memory_read_packet_config = | |
1021 | { | |
1022 | "memory-read-packet-size", | |
1023 | }; | |
1024 | ||
1025 | static void | |
1026 | set_memory_read_packet_size (char *args, int from_tty) | |
1027 | { | |
1028 | set_memory_packet_size (args, &memory_read_packet_config); | |
1029 | } | |
1030 | ||
1031 | static void | |
1032 | show_memory_read_packet_size (char *args, int from_tty) | |
1033 | { | |
1034 | show_memory_packet_size (&memory_read_packet_config); | |
1035 | } | |
1036 | ||
1037 | static long | |
1038 | get_memory_read_packet_size (void) | |
1039 | { | |
1040 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1041 | |
11cf8741 JM |
1042 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1043 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1044 | increased beyond this. */ |
1045 | if (size > get_remote_packet_size ()) | |
1046 | size = get_remote_packet_size (); | |
11cf8741 JM |
1047 | return size; |
1048 | } | |
1049 | ||
11cf8741 | 1050 | \f |
5a2468f5 | 1051 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1052 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1053 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1054 | |
1055 | enum packet_support | |
1056 | { | |
1057 | PACKET_SUPPORT_UNKNOWN = 0, | |
1058 | PACKET_ENABLE, | |
1059 | PACKET_DISABLE | |
1060 | }; | |
1061 | ||
5a2468f5 JM |
1062 | struct packet_config |
1063 | { | |
bb572ddd DJ |
1064 | const char *name; |
1065 | const char *title; | |
4082afcc PA |
1066 | |
1067 | /* If auto, GDB auto-detects support for this packet or feature, | |
1068 | either through qSupported, or by trying the packet and looking | |
1069 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1070 | packet. If false, the packet is disabled. Configs that don't |
1071 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1072 | enum auto_boolean detect; |
4082afcc PA |
1073 | |
1074 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1075 | enum packet_support support; |
1076 | }; | |
1077 | ||
d471ea57 | 1078 | /* Analyze a packet's return value and update the packet config |
23860348 | 1079 | accordingly. */ |
d471ea57 AC |
1080 | |
1081 | enum packet_result | |
1082 | { | |
1083 | PACKET_ERROR, | |
1084 | PACKET_OK, | |
1085 | PACKET_UNKNOWN | |
1086 | }; | |
1087 | ||
4082afcc PA |
1088 | static enum packet_support packet_config_support (struct packet_config *config); |
1089 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1090 | |
1091 | static void | |
fba45db2 | 1092 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1093 | { |
1094 | char *support = "internal-error"; | |
a744cf53 | 1095 | |
4082afcc | 1096 | switch (packet_config_support (config)) |
5a2468f5 JM |
1097 | { |
1098 | case PACKET_ENABLE: | |
1099 | support = "enabled"; | |
1100 | break; | |
1101 | case PACKET_DISABLE: | |
1102 | support = "disabled"; | |
1103 | break; | |
1104 | case PACKET_SUPPORT_UNKNOWN: | |
1105 | support = "unknown"; | |
1106 | break; | |
1107 | } | |
1108 | switch (config->detect) | |
1109 | { | |
7f19b9a2 | 1110 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1111 | printf_filtered (_("Support for the `%s' packet " |
1112 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1113 | config->name, support); |
5a2468f5 | 1114 | break; |
7f19b9a2 AC |
1115 | case AUTO_BOOLEAN_TRUE: |
1116 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1117 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1118 | config->name, support); | |
8e248173 | 1119 | break; |
5a2468f5 JM |
1120 | } |
1121 | } | |
1122 | ||
1123 | static void | |
bb572ddd DJ |
1124 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1125 | const char *title, int legacy) | |
d471ea57 | 1126 | { |
5a2468f5 JM |
1127 | char *set_doc; |
1128 | char *show_doc; | |
d471ea57 | 1129 | char *cmd_name; |
3ed07be4 | 1130 | |
5a2468f5 JM |
1131 | config->name = name; |
1132 | config->title = title; | |
b435e160 AC |
1133 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1134 | name, title); | |
3e43a32a MS |
1135 | show_doc = xstrprintf ("Show current use of remote " |
1136 | "protocol `%s' (%s) packet", | |
b435e160 | 1137 | name, title); |
d471ea57 | 1138 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1139 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1140 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1141 | &config->detect, set_doc, |
1142 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1143 | NULL, |
bb572ddd DJ |
1144 | show_remote_protocol_packet_cmd, |
1145 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1146 | /* The command code copies the documentation strings. */ |
1147 | xfree (set_doc); | |
1148 | xfree (show_doc); | |
23860348 | 1149 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1150 | if (legacy) |
1151 | { | |
1152 | char *legacy_name; | |
a744cf53 | 1153 | |
b435e160 | 1154 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1155 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1156 | &remote_set_cmdlist); |
d471ea57 | 1157 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1158 | &remote_show_cmdlist); |
d471ea57 | 1159 | } |
5a2468f5 JM |
1160 | } |
1161 | ||
d471ea57 | 1162 | static enum packet_result |
a76d924d | 1163 | packet_check_result (const char *buf) |
5a2468f5 | 1164 | { |
d471ea57 | 1165 | if (buf[0] != '\0') |
5a2468f5 | 1166 | { |
d471ea57 | 1167 | /* The stub recognized the packet request. Check that the |
23860348 | 1168 | operation succeeded. */ |
a76d924d DJ |
1169 | if (buf[0] == 'E' |
1170 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1171 | && buf[3] == '\0') | |
1172 | /* "Enn" - definitly an error. */ | |
1173 | return PACKET_ERROR; | |
1174 | ||
1175 | /* Always treat "E." as an error. This will be used for | |
1176 | more verbose error messages, such as E.memtypes. */ | |
1177 | if (buf[0] == 'E' && buf[1] == '.') | |
1178 | return PACKET_ERROR; | |
1179 | ||
1180 | /* The packet may or may not be OK. Just assume it is. */ | |
1181 | return PACKET_OK; | |
1182 | } | |
1183 | else | |
1184 | /* The stub does not support the packet. */ | |
1185 | return PACKET_UNKNOWN; | |
1186 | } | |
1187 | ||
1188 | static enum packet_result | |
1189 | packet_ok (const char *buf, struct packet_config *config) | |
1190 | { | |
1191 | enum packet_result result; | |
1192 | ||
4082afcc PA |
1193 | if (config->detect != AUTO_BOOLEAN_TRUE |
1194 | && config->support == PACKET_DISABLE) | |
1195 | internal_error (__FILE__, __LINE__, | |
1196 | _("packet_ok: attempt to use a disabled packet")); | |
1197 | ||
a76d924d DJ |
1198 | result = packet_check_result (buf); |
1199 | switch (result) | |
1200 | { | |
1201 | case PACKET_OK: | |
1202 | case PACKET_ERROR: | |
1203 | /* The stub recognized the packet request. */ | |
4082afcc | 1204 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1205 | { |
d471ea57 AC |
1206 | if (remote_debug) |
1207 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1208 | "Packet %s (%s) is supported\n", |
1209 | config->name, config->title); | |
d471ea57 | 1210 | config->support = PACKET_ENABLE; |
d471ea57 | 1211 | } |
a76d924d DJ |
1212 | break; |
1213 | case PACKET_UNKNOWN: | |
23860348 | 1214 | /* The stub does not support the packet. */ |
4082afcc PA |
1215 | if (config->detect == AUTO_BOOLEAN_AUTO |
1216 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1217 | { |
4082afcc PA |
1218 | /* If the stub previously indicated that the packet was |
1219 | supported then there is a protocol error. */ | |
1220 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1221 | config->name, config->title); | |
1222 | } | |
1223 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1224 | { | |
1225 | /* The user set it wrong. */ | |
1226 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1227 | config->name, config->title); | |
d471ea57 | 1228 | } |
4082afcc PA |
1229 | |
1230 | if (remote_debug) | |
1231 | fprintf_unfiltered (gdb_stdlog, | |
1232 | "Packet %s (%s) is NOT supported\n", | |
1233 | config->name, config->title); | |
1234 | config->support = PACKET_DISABLE; | |
a76d924d | 1235 | break; |
5a2468f5 | 1236 | } |
a76d924d DJ |
1237 | |
1238 | return result; | |
5a2468f5 JM |
1239 | } |
1240 | ||
444abaca DJ |
1241 | enum { |
1242 | PACKET_vCont = 0, | |
1243 | PACKET_X, | |
1244 | PACKET_qSymbol, | |
1245 | PACKET_P, | |
1246 | PACKET_p, | |
1247 | PACKET_Z0, | |
1248 | PACKET_Z1, | |
1249 | PACKET_Z2, | |
1250 | PACKET_Z3, | |
1251 | PACKET_Z4, | |
a6b151f1 DJ |
1252 | PACKET_vFile_open, |
1253 | PACKET_vFile_pread, | |
1254 | PACKET_vFile_pwrite, | |
1255 | PACKET_vFile_close, | |
1256 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1257 | PACKET_vFile_readlink, |
0876f84a | 1258 | PACKET_qXfer_auxv, |
23181151 | 1259 | PACKET_qXfer_features, |
cfa9d6d9 | 1260 | PACKET_qXfer_libraries, |
2268b414 | 1261 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1262 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1263 | PACKET_qXfer_spu_read, |
1264 | PACKET_qXfer_spu_write, | |
07e059b5 | 1265 | PACKET_qXfer_osdata, |
dc146f7c | 1266 | PACKET_qXfer_threads, |
0fb4aa4b | 1267 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1268 | PACKET_qXfer_traceframe_info, |
169081d0 | 1269 | PACKET_qXfer_uib, |
711e434b | 1270 | PACKET_qGetTIBAddr, |
444abaca | 1271 | PACKET_qGetTLSAddr, |
be2a5f71 | 1272 | PACKET_qSupported, |
bd3eecc3 | 1273 | PACKET_qTStatus, |
89be2091 | 1274 | PACKET_QPassSignals, |
9b224c5e | 1275 | PACKET_QProgramSignals, |
936d2992 | 1276 | PACKET_qCRC, |
08388c79 | 1277 | PACKET_qSearch_memory, |
2d717e4f DJ |
1278 | PACKET_vAttach, |
1279 | PACKET_vRun, | |
a6f3e723 | 1280 | PACKET_QStartNoAckMode, |
82f73884 | 1281 | PACKET_vKill, |
4aa995e1 PA |
1282 | PACKET_qXfer_siginfo_read, |
1283 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1284 | PACKET_qAttached, |
4082afcc PA |
1285 | |
1286 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1287 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1288 | |
1289 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1290 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1291 | |
1292 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1293 | PACKET_BreakpointCommands, |
4082afcc PA |
1294 | |
1295 | /* Support for fast tracepoints. */ | |
7a697b8d | 1296 | PACKET_FastTracepoints, |
4082afcc PA |
1297 | |
1298 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1299 | PACKET_StaticTracepoints, |
4082afcc PA |
1300 | |
1301 | /* Support for installing tracepoints while a trace experiment is | |
1302 | running. */ | |
1e4d1764 | 1303 | PACKET_InstallInTrace, |
4082afcc | 1304 | |
40ab02ce MS |
1305 | PACKET_bc, |
1306 | PACKET_bs, | |
409873ef | 1307 | PACKET_TracepointSource, |
d914c394 | 1308 | PACKET_QAllow, |
78d85199 | 1309 | PACKET_qXfer_fdpic, |
03583c20 | 1310 | PACKET_QDisableRandomization, |
d1feda86 | 1311 | PACKET_QAgent, |
f6f899bf | 1312 | PACKET_QTBuffer_size, |
9accd112 MM |
1313 | PACKET_Qbtrace_off, |
1314 | PACKET_Qbtrace_bts, | |
1315 | PACKET_qXfer_btrace, | |
4082afcc PA |
1316 | |
1317 | /* Support for the QNonStop packet. */ | |
1318 | PACKET_QNonStop, | |
1319 | ||
1320 | /* Support for multi-process extensions. */ | |
1321 | PACKET_multiprocess_feature, | |
1322 | ||
1323 | /* Support for enabling and disabling tracepoints while a trace | |
1324 | experiment is running. */ | |
1325 | PACKET_EnableDisableTracepoints_feature, | |
1326 | ||
1327 | /* Support for collecting strings using the tracenz bytecode. */ | |
1328 | PACKET_tracenz_feature, | |
1329 | ||
1330 | /* Support for continuing to run a trace experiment while GDB is | |
1331 | disconnected. */ | |
1332 | PACKET_DisconnectedTracing_feature, | |
1333 | ||
1334 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1335 | PACKET_augmented_libraries_svr4_read_feature, | |
1336 | ||
444abaca DJ |
1337 | PACKET_MAX |
1338 | }; | |
506fb367 | 1339 | |
444abaca | 1340 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1341 | |
4082afcc PA |
1342 | /* Returns whether a given packet or feature is supported. This takes |
1343 | into account the state of the corresponding "set remote foo-packet" | |
1344 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1345 | |
4082afcc PA |
1346 | static enum packet_support |
1347 | packet_config_support (struct packet_config *config) | |
1348 | { | |
1349 | switch (config->detect) | |
444abaca | 1350 | { |
4082afcc PA |
1351 | case AUTO_BOOLEAN_TRUE: |
1352 | return PACKET_ENABLE; | |
1353 | case AUTO_BOOLEAN_FALSE: | |
1354 | return PACKET_DISABLE; | |
1355 | case AUTO_BOOLEAN_AUTO: | |
1356 | return config->support; | |
1357 | default: | |
1358 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1359 | } |
4082afcc PA |
1360 | } |
1361 | ||
1362 | /* Same as packet_config_support, but takes the packet's enum value as | |
1363 | argument. */ | |
1364 | ||
1365 | static enum packet_support | |
1366 | packet_support (int packet) | |
1367 | { | |
1368 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1369 | ||
1370 | return packet_config_support (config); | |
dc8acb97 MS |
1371 | } |
1372 | ||
5a2468f5 | 1373 | static void |
444abaca DJ |
1374 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1375 | struct cmd_list_element *c, | |
1376 | const char *value) | |
5a2468f5 | 1377 | { |
444abaca | 1378 | struct packet_config *packet; |
5a2468f5 | 1379 | |
444abaca DJ |
1380 | for (packet = remote_protocol_packets; |
1381 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1382 | packet++) | |
1383 | { | |
1384 | if (&packet->detect == c->var) | |
1385 | { | |
1386 | show_packet_config_cmd (packet); | |
1387 | return; | |
1388 | } | |
1389 | } | |
9b20d036 | 1390 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1391 | c->name); |
5a2468f5 JM |
1392 | } |
1393 | ||
d471ea57 AC |
1394 | /* Should we try one of the 'Z' requests? */ |
1395 | ||
1396 | enum Z_packet_type | |
1397 | { | |
1398 | Z_PACKET_SOFTWARE_BP, | |
1399 | Z_PACKET_HARDWARE_BP, | |
1400 | Z_PACKET_WRITE_WP, | |
1401 | Z_PACKET_READ_WP, | |
1402 | Z_PACKET_ACCESS_WP, | |
1403 | NR_Z_PACKET_TYPES | |
1404 | }; | |
96baa820 | 1405 | |
d471ea57 | 1406 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1407 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1408 | |
7f19b9a2 | 1409 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1410 | |
1411 | static void | |
fba45db2 KB |
1412 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1413 | struct cmd_list_element *c) | |
96baa820 | 1414 | { |
d471ea57 | 1415 | int i; |
a744cf53 | 1416 | |
d471ea57 | 1417 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1418 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1419 | } |
1420 | ||
1421 | static void | |
08546159 AC |
1422 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1423 | struct cmd_list_element *c, | |
1424 | const char *value) | |
96baa820 | 1425 | { |
d471ea57 | 1426 | int i; |
a744cf53 | 1427 | |
d471ea57 AC |
1428 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1429 | { | |
444abaca | 1430 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1431 | } |
96baa820 JM |
1432 | } |
1433 | ||
4082afcc PA |
1434 | /* Returns true if the multi-process extensions are in effect. */ |
1435 | ||
1436 | static int | |
1437 | remote_multi_process_p (struct remote_state *rs) | |
1438 | { | |
1439 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1440 | } | |
1441 | ||
23860348 | 1442 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1443 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1444 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1445 | |
74531fed PA |
1446 | \f |
1447 | /* Asynchronous signal handle registered as event loop source for | |
1448 | when we have pending events ready to be passed to the core. */ | |
1449 | ||
1450 | static struct async_event_handler *remote_async_inferior_event_token; | |
1451 | ||
c906108c SS |
1452 | \f |
1453 | ||
79d7f229 PA |
1454 | static ptid_t magic_null_ptid; |
1455 | static ptid_t not_sent_ptid; | |
1456 | static ptid_t any_thread_ptid; | |
1457 | ||
0b16c5cf PA |
1458 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1459 | detach instead of killing it when bailing out). */ | |
1460 | ||
1461 | static int | |
1462 | remote_query_attached (int pid) | |
1463 | { | |
1464 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1465 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1466 | |
4082afcc | 1467 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1468 | return 0; |
1469 | ||
1470 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1471 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1472 | else |
bba74b36 | 1473 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1474 | |
1475 | putpkt (rs->buf); | |
1476 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1477 | ||
1478 | switch (packet_ok (rs->buf, | |
1554e9be | 1479 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1480 | { |
1481 | case PACKET_OK: | |
1482 | if (strcmp (rs->buf, "1") == 0) | |
1483 | return 1; | |
1484 | break; | |
1485 | case PACKET_ERROR: | |
1486 | warning (_("Remote failure reply: %s"), rs->buf); | |
1487 | break; | |
1488 | case PACKET_UNKNOWN: | |
1489 | break; | |
1490 | } | |
1491 | ||
1492 | return 0; | |
1493 | } | |
1494 | ||
49c62f2e PA |
1495 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1496 | has been invented by GDB, instead of reported by the target. Since | |
1497 | we can be connected to a remote system before before knowing about | |
1498 | any inferior, mark the target with execution when we find the first | |
1499 | inferior. If ATTACHED is 1, then we had just attached to this | |
1500 | inferior. If it is 0, then we just created this inferior. If it | |
1501 | is -1, then try querying the remote stub to find out if it had | |
1502 | attached to the inferior or not. */ | |
1941c569 PA |
1503 | |
1504 | static struct inferior * | |
49c62f2e | 1505 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1506 | { |
1941c569 PA |
1507 | struct inferior *inf; |
1508 | ||
0b16c5cf PA |
1509 | /* Check whether this process we're learning about is to be |
1510 | considered attached, or if is to be considered to have been | |
1511 | spawned by the stub. */ | |
1512 | if (attached == -1) | |
1513 | attached = remote_query_attached (pid); | |
1514 | ||
f5656ead | 1515 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1516 | { |
1517 | /* If the target shares code across all inferiors, then every | |
1518 | attach adds a new inferior. */ | |
1519 | inf = add_inferior (pid); | |
1520 | ||
1521 | /* ... and every inferior is bound to the same program space. | |
1522 | However, each inferior may still have its own address | |
1523 | space. */ | |
1524 | inf->aspace = maybe_new_address_space (); | |
1525 | inf->pspace = current_program_space; | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | /* In the traditional debugging scenario, there's a 1-1 match | |
1530 | between program/address spaces. We simply bind the inferior | |
1531 | to the program space's address space. */ | |
1532 | inf = current_inferior (); | |
1533 | inferior_appeared (inf, pid); | |
1534 | } | |
1941c569 | 1535 | |
0b16c5cf | 1536 | inf->attach_flag = attached; |
49c62f2e | 1537 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1538 | |
1941c569 PA |
1539 | return inf; |
1540 | } | |
1541 | ||
1542 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1543 | according to RUNNING. */ | |
1544 | ||
c906108c | 1545 | static void |
1941c569 | 1546 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1547 | { |
b7ea362b PA |
1548 | struct remote_state *rs = get_remote_state (); |
1549 | ||
1550 | /* GDB historically didn't pull threads in the initial connection | |
1551 | setup. If the remote target doesn't even have a concept of | |
1552 | threads (e.g., a bare-metal target), even if internally we | |
1553 | consider that a single-threaded target, mentioning a new thread | |
1554 | might be confusing to the user. Be silent then, preserving the | |
1555 | age old behavior. */ | |
1556 | if (rs->starting_up) | |
1557 | add_thread_silent (ptid); | |
1558 | else | |
1559 | add_thread (ptid); | |
1941c569 PA |
1560 | |
1561 | set_executing (ptid, running); | |
1562 | set_running (ptid, running); | |
1563 | } | |
1564 | ||
1565 | /* Come here when we learn about a thread id from the remote target. | |
1566 | It may be the first time we hear about such thread, so take the | |
1567 | opportunity to add it to GDB's thread list. In case this is the | |
1568 | first time we're noticing its corresponding inferior, add it to | |
1569 | GDB's inferior list as well. */ | |
1570 | ||
1571 | static void | |
1572 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1573 | { | |
c906108c SS |
1574 | /* If this is a new thread, add it to GDB's thread list. |
1575 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1576 | |
1577 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1578 | { | |
1579 | /* We're seeing an event on a thread id we knew had exited. | |
1580 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1581 | remote_add_thread (currthread, running); |
82f73884 PA |
1582 | return; |
1583 | } | |
1584 | ||
79d7f229 | 1585 | if (!in_thread_list (currthread)) |
c0a2216e | 1586 | { |
1941c569 | 1587 | struct inferior *inf = NULL; |
bad34192 | 1588 | int pid = ptid_get_pid (currthread); |
1941c569 | 1589 | |
bad34192 PA |
1590 | if (ptid_is_pid (inferior_ptid) |
1591 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1592 | { |
1593 | /* inferior_ptid has no thread member yet. This can happen | |
1594 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1595 | stub doesn't support qC. This is the first stop reported | |
1596 | after an attach, so this is the main thread. Update the | |
1597 | ptid in the thread list. */ | |
bad34192 PA |
1598 | if (in_thread_list (pid_to_ptid (pid))) |
1599 | thread_change_ptid (inferior_ptid, currthread); | |
1600 | else | |
1601 | { | |
1602 | remote_add_thread (currthread, running); | |
1603 | inferior_ptid = currthread; | |
1604 | } | |
dc146f7c | 1605 | return; |
c0a2216e | 1606 | } |
82f73884 PA |
1607 | |
1608 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1609 | { |
1610 | /* inferior_ptid is not set yet. This can happen with the | |
1611 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1612 | doesn't support qC. This is the first stop reported | |
1613 | after an attach, so this is the main thread. Update the | |
1614 | ptid in the thread list. */ | |
dc146f7c | 1615 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1616 | return; |
c0a2216e | 1617 | } |
82f73884 | 1618 | |
29c87f7f PA |
1619 | /* When connecting to a target remote, or to a target |
1620 | extended-remote which already was debugging an inferior, we | |
1621 | may not know about it yet. Add it before adding its child | |
1622 | thread, so notifications are emitted in a sensible order. */ | |
1623 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1624 | { |
1625 | struct remote_state *rs = get_remote_state (); | |
1626 | int fake_pid_p = !remote_multi_process_p (rs); | |
1627 | ||
1628 | inf = remote_add_inferior (fake_pid_p, | |
1629 | ptid_get_pid (currthread), -1); | |
1630 | } | |
29c87f7f | 1631 | |
82f73884 | 1632 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1633 | remote_add_thread (currthread, running); |
1634 | ||
1635 | /* If we found a new inferior, let the common code do whatever | |
1636 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1637 | breakpoints), unless we're just setting up an all-stop |
1638 | connection. */ | |
1941c569 | 1639 | if (inf != NULL) |
b7ea362b PA |
1640 | { |
1641 | struct remote_state *rs = get_remote_state (); | |
1642 | ||
1643 | if (non_stop || !rs->starting_up) | |
1644 | notice_new_inferior (currthread, running, 0); | |
1645 | } | |
c0a2216e | 1646 | } |
c906108c SS |
1647 | } |
1648 | ||
dc146f7c VP |
1649 | /* Return the private thread data, creating it if necessary. */ |
1650 | ||
70221824 | 1651 | static struct private_thread_info * |
dc146f7c VP |
1652 | demand_private_info (ptid_t ptid) |
1653 | { | |
1654 | struct thread_info *info = find_thread_ptid (ptid); | |
1655 | ||
1656 | gdb_assert (info); | |
1657 | ||
1658 | if (!info->private) | |
1659 | { | |
1660 | info->private = xmalloc (sizeof (*(info->private))); | |
1661 | info->private_dtor = free_private_thread_info; | |
1662 | info->private->core = -1; | |
1663 | info->private->extra = 0; | |
1664 | } | |
1665 | ||
1666 | return info->private; | |
1667 | } | |
1668 | ||
74531fed PA |
1669 | /* Call this function as a result of |
1670 | 1) A halt indication (T packet) containing a thread id | |
1671 | 2) A direct query of currthread | |
0df8b418 | 1672 | 3) Successful execution of set thread */ |
74531fed PA |
1673 | |
1674 | static void | |
47f8a51d | 1675 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1676 | { |
47f8a51d | 1677 | rs->general_thread = currthread; |
74531fed PA |
1678 | } |
1679 | ||
89be2091 DJ |
1680 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1681 | it can simply pass through to the inferior without reporting. */ | |
1682 | ||
1683 | static void | |
94bedb42 TT |
1684 | remote_pass_signals (struct target_ops *self, |
1685 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1686 | { |
4082afcc | 1687 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1688 | { |
1689 | char *pass_packet, *p; | |
89be2091 | 1690 | int count = 0, i; |
747dc59d | 1691 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1692 | |
1693 | gdb_assert (numsigs < 256); | |
1694 | for (i = 0; i < numsigs; i++) | |
1695 | { | |
2455069d | 1696 | if (pass_signals[i]) |
89be2091 DJ |
1697 | count++; |
1698 | } | |
1699 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1700 | strcpy (pass_packet, "QPassSignals:"); | |
1701 | p = pass_packet + strlen (pass_packet); | |
1702 | for (i = 0; i < numsigs; i++) | |
1703 | { | |
2455069d | 1704 | if (pass_signals[i]) |
89be2091 DJ |
1705 | { |
1706 | if (i >= 16) | |
1707 | *p++ = tohex (i >> 4); | |
1708 | *p++ = tohex (i & 15); | |
1709 | if (count) | |
1710 | *p++ = ';'; | |
1711 | else | |
1712 | break; | |
1713 | count--; | |
1714 | } | |
1715 | } | |
1716 | *p = 0; | |
747dc59d | 1717 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1718 | { |
89be2091 DJ |
1719 | putpkt (pass_packet); |
1720 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1721 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1722 | if (rs->last_pass_packet) |
1723 | xfree (rs->last_pass_packet); | |
1724 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1725 | } |
1726 | else | |
1727 | xfree (pass_packet); | |
1728 | } | |
1729 | } | |
1730 | ||
9b224c5e PA |
1731 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1732 | signals it should pass through to the inferior when detaching. */ | |
1733 | ||
1734 | static void | |
daf5e9b6 TT |
1735 | remote_program_signals (struct target_ops *self, |
1736 | int numsigs, unsigned char *signals) | |
9b224c5e | 1737 | { |
4082afcc | 1738 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1739 | { |
1740 | char *packet, *p; | |
1741 | int count = 0, i; | |
5e4a05c4 | 1742 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1743 | |
1744 | gdb_assert (numsigs < 256); | |
1745 | for (i = 0; i < numsigs; i++) | |
1746 | { | |
1747 | if (signals[i]) | |
1748 | count++; | |
1749 | } | |
1750 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1751 | strcpy (packet, "QProgramSignals:"); | |
1752 | p = packet + strlen (packet); | |
1753 | for (i = 0; i < numsigs; i++) | |
1754 | { | |
1755 | if (signal_pass_state (i)) | |
1756 | { | |
1757 | if (i >= 16) | |
1758 | *p++ = tohex (i >> 4); | |
1759 | *p++ = tohex (i & 15); | |
1760 | if (count) | |
1761 | *p++ = ';'; | |
1762 | else | |
1763 | break; | |
1764 | count--; | |
1765 | } | |
1766 | } | |
1767 | *p = 0; | |
5e4a05c4 TT |
1768 | if (!rs->last_program_signals_packet |
1769 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1770 | { |
9b224c5e PA |
1771 | putpkt (packet); |
1772 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1773 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1774 | xfree (rs->last_program_signals_packet); |
1775 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1776 | } |
1777 | else | |
1778 | xfree (packet); | |
1779 | } | |
1780 | } | |
1781 | ||
79d7f229 PA |
1782 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1783 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1784 | thread. If GEN is set, set the general thread, if not, then set | |
1785 | the step/continue thread. */ | |
c906108c | 1786 | static void |
79d7f229 | 1787 | set_thread (struct ptid ptid, int gen) |
c906108c | 1788 | { |
d01949b6 | 1789 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1790 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1791 | char *buf = rs->buf; |
79d7f229 | 1792 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1793 | |
79d7f229 | 1794 | if (ptid_equal (state, ptid)) |
c906108c SS |
1795 | return; |
1796 | ||
79d7f229 PA |
1797 | *buf++ = 'H'; |
1798 | *buf++ = gen ? 'g' : 'c'; | |
1799 | if (ptid_equal (ptid, magic_null_ptid)) | |
1800 | xsnprintf (buf, endbuf - buf, "0"); | |
1801 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1802 | xsnprintf (buf, endbuf - buf, "0"); | |
1803 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1804 | xsnprintf (buf, endbuf - buf, "-1"); | |
1805 | else | |
82f73884 | 1806 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1807 | putpkt (rs->buf); |
6d820c5c | 1808 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1809 | if (gen) |
47f8a51d | 1810 | rs->general_thread = ptid; |
c906108c | 1811 | else |
47f8a51d | 1812 | rs->continue_thread = ptid; |
c906108c | 1813 | } |
79d7f229 PA |
1814 | |
1815 | static void | |
1816 | set_general_thread (struct ptid ptid) | |
1817 | { | |
1818 | set_thread (ptid, 1); | |
1819 | } | |
1820 | ||
1821 | static void | |
1822 | set_continue_thread (struct ptid ptid) | |
1823 | { | |
1824 | set_thread (ptid, 0); | |
1825 | } | |
1826 | ||
3c9c4b83 PA |
1827 | /* Change the remote current process. Which thread within the process |
1828 | ends up selected isn't important, as long as it is the same process | |
1829 | as what INFERIOR_PTID points to. | |
1830 | ||
1831 | This comes from that fact that there is no explicit notion of | |
1832 | "selected process" in the protocol. The selected process for | |
1833 | general operations is the process the selected general thread | |
1834 | belongs to. */ | |
1835 | ||
1836 | static void | |
1837 | set_general_process (void) | |
1838 | { | |
1839 | struct remote_state *rs = get_remote_state (); | |
1840 | ||
1841 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1842 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1843 | return; |
1844 | ||
1845 | /* We only need to change the remote current thread if it's pointing | |
1846 | at some other process. */ | |
47f8a51d | 1847 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1848 | set_general_thread (inferior_ptid); |
1849 | } | |
1850 | ||
c906108c | 1851 | \f |
79d7f229 PA |
1852 | /* Return nonzero if the thread PTID is still alive on the remote |
1853 | system. */ | |
c906108c SS |
1854 | |
1855 | static int | |
28439f5e | 1856 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1857 | { |
6d820c5c | 1858 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1859 | char *p, *endp; |
c906108c | 1860 | |
c0a2216e PA |
1861 | if (ptid_equal (ptid, magic_null_ptid)) |
1862 | /* The main thread is always alive. */ | |
1863 | return 1; | |
1864 | ||
ba348170 | 1865 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
1866 | /* The main thread is always alive. This can happen after a |
1867 | vAttach, if the remote side doesn't support | |
1868 | multi-threading. */ | |
1869 | return 1; | |
1870 | ||
82f73884 PA |
1871 | p = rs->buf; |
1872 | endp = rs->buf + get_remote_packet_size (); | |
1873 | ||
1874 | *p++ = 'T'; | |
1875 | write_ptid (p, endp, ptid); | |
1876 | ||
2e9f7625 | 1877 | putpkt (rs->buf); |
6d820c5c | 1878 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1879 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1880 | } |
1881 | ||
1882 | /* About these extended threadlist and threadinfo packets. They are | |
1883 | variable length packets but, the fields within them are often fixed | |
1884 | length. They are redundent enough to send over UDP as is the | |
1885 | remote protocol in general. There is a matching unit test module | |
1886 | in libstub. */ | |
1887 | ||
23860348 | 1888 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1889 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1890 | changable. */ |
cce74817 JM |
1891 | |
1892 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1893 | Plan to fix this. */ |
cce74817 | 1894 | |
23860348 | 1895 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1896 | |
9d1f7ab2 | 1897 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1898 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1899 | |
1900 | struct gdb_ext_thread_info | |
c5aa993b | 1901 | { |
23860348 | 1902 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1903 | int active; /* Has state interesting to GDB? |
23860348 | 1904 | regs, stack. */ |
2bc416ba | 1905 | char display[256]; /* Brief state display, name, |
cedea757 | 1906 | blocked/suspended. */ |
23860348 | 1907 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1908 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1909 | whatever. */ |
c5aa993b | 1910 | }; |
cce74817 JM |
1911 | |
1912 | /* The volume of remote transfers can be limited by submitting | |
1913 | a mask containing bits specifying the desired information. | |
1914 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1915 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1916 | |
1917 | #define TAG_THREADID 1 | |
1918 | #define TAG_EXISTS 2 | |
1919 | #define TAG_DISPLAY 4 | |
1920 | #define TAG_THREADNAME 8 | |
c5aa993b | 1921 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1922 | |
23860348 | 1923 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1924 | |
a14ed312 | 1925 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1926 | |
a14ed312 | 1927 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1928 | |
a14ed312 | 1929 | static char *pack_int (char *buf, int value); |
cce74817 | 1930 | |
a14ed312 | 1931 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1932 | |
a14ed312 | 1933 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1934 | |
23860348 | 1935 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1936 | |
23860348 | 1937 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1938 | |
23860348 | 1939 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1940 | |
23860348 | 1941 | static int threadref_to_int (threadref *ref); |
cce74817 | 1942 | |
23860348 | 1943 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1944 | |
23860348 | 1945 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1946 | |
2bc416ba | 1947 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1948 | threadref *id); |
cce74817 | 1949 | |
a14ed312 | 1950 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1951 | threadref *expectedref, |
a14ed312 KB |
1952 | struct gdb_ext_thread_info |
1953 | *info); | |
cce74817 JM |
1954 | |
1955 | ||
2bc416ba | 1956 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1957 | int fieldset, /*TAG mask */ |
a14ed312 | 1958 | struct gdb_ext_thread_info *info); |
cce74817 | 1959 | |
a14ed312 KB |
1960 | static char *pack_threadlist_request (char *pkt, int startflag, |
1961 | int threadcount, | |
23860348 | 1962 | threadref *nextthread); |
cce74817 | 1963 | |
a14ed312 KB |
1964 | static int parse_threadlist_response (char *pkt, |
1965 | int result_limit, | |
23860348 | 1966 | threadref *original_echo, |
2bc416ba | 1967 | threadref *resultlist, |
23860348 | 1968 | int *doneflag); |
cce74817 | 1969 | |
a14ed312 | 1970 | static int remote_get_threadlist (int startflag, |
23860348 | 1971 | threadref *nextthread, |
a14ed312 KB |
1972 | int result_limit, |
1973 | int *done, | |
2bc416ba | 1974 | int *result_count, |
23860348 | 1975 | threadref *threadlist); |
cce74817 | 1976 | |
23860348 | 1977 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1978 | |
a14ed312 KB |
1979 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1980 | void *context, int looplimit); | |
cce74817 | 1981 | |
23860348 | 1982 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1983 | |
82f73884 PA |
1984 | |
1985 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1986 | buffer we're allowed to write to. Returns | |
1987 | BUF+CHARACTERS_WRITTEN. */ | |
1988 | ||
1989 | static char * | |
1990 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1991 | { | |
1992 | int pid, tid; | |
1993 | struct remote_state *rs = get_remote_state (); | |
1994 | ||
1995 | if (remote_multi_process_p (rs)) | |
1996 | { | |
1997 | pid = ptid_get_pid (ptid); | |
1998 | if (pid < 0) | |
1999 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2000 | else | |
2001 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2002 | } | |
ba348170 | 2003 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2004 | if (tid < 0) |
2005 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2006 | else | |
2007 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2008 | ||
2009 | return buf; | |
2010 | } | |
2011 | ||
2012 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2013 | passed the last parsed char. Returns null_ptid on error. */ | |
2014 | ||
2015 | static ptid_t | |
2016 | read_ptid (char *buf, char **obuf) | |
2017 | { | |
2018 | char *p = buf; | |
2019 | char *pp; | |
2020 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2021 | |
2022 | if (*p == 'p') | |
2023 | { | |
2024 | /* Multi-process ptid. */ | |
2025 | pp = unpack_varlen_hex (p + 1, &pid); | |
2026 | if (*pp != '.') | |
b37520b6 | 2027 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2028 | |
2029 | p = pp; | |
2030 | pp = unpack_varlen_hex (p + 1, &tid); | |
2031 | if (obuf) | |
2032 | *obuf = pp; | |
ba348170 | 2033 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2034 | } |
2035 | ||
2036 | /* No multi-process. Just a tid. */ | |
2037 | pp = unpack_varlen_hex (p, &tid); | |
2038 | ||
2039 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2040 | what's in inferior_ptid, unless it's null at this point. If so, |
2041 | then since there's no way to know the pid of the reported | |
2042 | threads, use the magic number. */ | |
2043 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2044 | pid = ptid_get_pid (magic_null_ptid); | |
2045 | else | |
2046 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2047 | |
2048 | if (obuf) | |
2049 | *obuf = pp; | |
ba348170 | 2050 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2051 | } |
2052 | ||
c906108c | 2053 | static int |
fba45db2 | 2054 | stubhex (int ch) |
c906108c SS |
2055 | { |
2056 | if (ch >= 'a' && ch <= 'f') | |
2057 | return ch - 'a' + 10; | |
2058 | if (ch >= '0' && ch <= '9') | |
2059 | return ch - '0'; | |
2060 | if (ch >= 'A' && ch <= 'F') | |
2061 | return ch - 'A' + 10; | |
2062 | return -1; | |
2063 | } | |
2064 | ||
2065 | static int | |
fba45db2 | 2066 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2067 | { |
2068 | int nibble; | |
2069 | int retval = 0; | |
2070 | ||
2071 | while (fieldlength) | |
2072 | { | |
2073 | nibble = stubhex (*buff++); | |
2074 | retval |= nibble; | |
2075 | fieldlength--; | |
2076 | if (fieldlength) | |
2077 | retval = retval << 4; | |
2078 | } | |
2079 | return retval; | |
2080 | } | |
2081 | ||
c906108c | 2082 | static char * |
fba45db2 | 2083 | unpack_nibble (char *buf, int *val) |
c906108c | 2084 | { |
b7589f7d | 2085 | *val = fromhex (*buf++); |
c906108c SS |
2086 | return buf; |
2087 | } | |
2088 | ||
c906108c | 2089 | static char * |
fba45db2 | 2090 | unpack_byte (char *buf, int *value) |
c906108c SS |
2091 | { |
2092 | *value = stub_unpack_int (buf, 2); | |
2093 | return buf + 2; | |
2094 | } | |
2095 | ||
2096 | static char * | |
fba45db2 | 2097 | pack_int (char *buf, int value) |
c906108c SS |
2098 | { |
2099 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2100 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2101 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2102 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2103 | return buf; | |
2104 | } | |
2105 | ||
2106 | static char * | |
fba45db2 | 2107 | unpack_int (char *buf, int *value) |
c906108c SS |
2108 | { |
2109 | *value = stub_unpack_int (buf, 8); | |
2110 | return buf + 8; | |
2111 | } | |
2112 | ||
23860348 | 2113 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2114 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2115 | |
2116 | static char * | |
fba45db2 | 2117 | pack_string (char *pkt, char *string) |
c906108c SS |
2118 | { |
2119 | char ch; | |
2120 | int len; | |
2121 | ||
2122 | len = strlen (string); | |
2123 | if (len > 200) | |
23860348 | 2124 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2125 | pkt = pack_hex_byte (pkt, len); |
2126 | while (len-- > 0) | |
2127 | { | |
2128 | ch = *string++; | |
2129 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2130 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2131 | *pkt++ = ch; |
2132 | } | |
2133 | return pkt; | |
2134 | } | |
2135 | #endif /* 0 (unused) */ | |
2136 | ||
2137 | static char * | |
fba45db2 | 2138 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2139 | { |
2140 | while (length--) | |
2141 | *dest++ = *src++; | |
2142 | *dest = '\0'; | |
2143 | return src; | |
2144 | } | |
2145 | ||
2146 | static char * | |
fba45db2 | 2147 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2148 | { |
2149 | char *limit; | |
2150 | unsigned char *altid; | |
2151 | ||
2152 | altid = (unsigned char *) id; | |
2153 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2154 | while (pkt < limit) | |
2155 | pkt = pack_hex_byte (pkt, *altid++); | |
2156 | return pkt; | |
2157 | } | |
2158 | ||
2159 | ||
2160 | static char * | |
fba45db2 | 2161 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2162 | { |
2163 | char *altref; | |
2164 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2165 | int x, y; | |
2166 | ||
2167 | altref = (char *) id; | |
2168 | ||
2169 | while (inbuf < limit) | |
2170 | { | |
2171 | x = stubhex (*inbuf++); | |
2172 | y = stubhex (*inbuf++); | |
2173 | *altref++ = (x << 4) | y; | |
2174 | } | |
2175 | return inbuf; | |
2176 | } | |
2177 | ||
2178 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2179 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2180 | to use 64bit thread references internally. This is an adapter |
2181 | function. */ | |
2182 | ||
2183 | void | |
fba45db2 | 2184 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2185 | { |
2186 | unsigned char *scan; | |
2187 | ||
2188 | scan = (unsigned char *) id; | |
2189 | { | |
2190 | int i = 4; | |
2191 | while (i--) | |
2192 | *scan++ = 0; | |
2193 | } | |
2194 | *scan++ = (value >> 24) & 0xff; | |
2195 | *scan++ = (value >> 16) & 0xff; | |
2196 | *scan++ = (value >> 8) & 0xff; | |
2197 | *scan++ = (value & 0xff); | |
2198 | } | |
2199 | ||
2200 | static int | |
fba45db2 | 2201 | threadref_to_int (threadref *ref) |
c906108c SS |
2202 | { |
2203 | int i, value = 0; | |
2204 | unsigned char *scan; | |
2205 | ||
cfd77fa1 | 2206 | scan = *ref; |
c906108c SS |
2207 | scan += 4; |
2208 | i = 4; | |
2209 | while (i-- > 0) | |
2210 | value = (value << 8) | ((*scan++) & 0xff); | |
2211 | return value; | |
2212 | } | |
2213 | ||
2214 | static void | |
fba45db2 | 2215 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2216 | { |
2217 | int i; | |
2218 | unsigned char *csrc, *cdest; | |
2219 | ||
2220 | csrc = (unsigned char *) src; | |
2221 | cdest = (unsigned char *) dest; | |
2222 | i = 8; | |
2223 | while (i--) | |
2224 | *cdest++ = *csrc++; | |
2225 | } | |
2226 | ||
2227 | static int | |
fba45db2 | 2228 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2229 | { |
23860348 | 2230 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2231 | #if 0 |
2232 | unsigned char *srcp, *destp; | |
2233 | int i, result; | |
2234 | srcp = (char *) src; | |
2235 | destp = (char *) dest; | |
2236 | ||
2237 | result = 1; | |
2238 | while (i-- > 0) | |
2239 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2240 | return result; | |
2241 | #endif | |
2242 | return 1; | |
2243 | } | |
2244 | ||
2245 | /* | |
c5aa993b JM |
2246 | threadid:1, # always request threadid |
2247 | context_exists:2, | |
2248 | display:4, | |
2249 | unique_name:8, | |
2250 | more_display:16 | |
2251 | */ | |
c906108c SS |
2252 | |
2253 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2254 | ||
2255 | static char * | |
fba45db2 | 2256 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2257 | { |
23860348 MS |
2258 | *pkt++ = 'q'; /* Info Query */ |
2259 | *pkt++ = 'P'; /* process or thread info */ | |
2260 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2261 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2262 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2263 | return pkt; |
2264 | } | |
2265 | ||
23860348 | 2266 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2267 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2268 | add more fields as time goes by. */ |
c906108c | 2269 | |
23860348 | 2270 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2271 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2272 | fetch registers and its stack? */ |
c5aa993b | 2273 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2274 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2275 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2276 | the process. */ |
c906108c SS |
2277 | |
2278 | static int | |
fba45db2 KB |
2279 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2280 | struct gdb_ext_thread_info *info) | |
c906108c | 2281 | { |
d01949b6 | 2282 | struct remote_state *rs = get_remote_state (); |
c906108c | 2283 | int mask, length; |
cfd77fa1 | 2284 | int tag; |
c906108c | 2285 | threadref ref; |
6d820c5c | 2286 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2287 | int retval = 1; |
2288 | ||
23860348 | 2289 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2290 | info->active = 0; |
2291 | info->display[0] = '\0'; | |
2292 | info->shortname[0] = '\0'; | |
2293 | info->more_display[0] = '\0'; | |
2294 | ||
23860348 MS |
2295 | /* Assume the characters indicating the packet type have been |
2296 | stripped. */ | |
c906108c SS |
2297 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2298 | pkt = unpack_threadid (pkt, &ref); | |
2299 | ||
2300 | if (mask == 0) | |
8a3fe4f8 | 2301 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2302 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2303 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2304 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2305 | return 0; |
2306 | } | |
2307 | copy_threadref (&info->threadid, &ref); | |
2308 | ||
23860348 | 2309 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2310 | |
23860348 MS |
2311 | /* Packets are terminated with nulls. */ |
2312 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2313 | { |
2314 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2315 | pkt = unpack_byte (pkt, &length); /* length */ |
2316 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2317 | { |
8a3fe4f8 | 2318 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2319 | retval = 0; |
2320 | break; | |
2321 | } | |
2322 | if (tag == TAG_THREADID) | |
2323 | { | |
2324 | if (length != 16) | |
2325 | { | |
8a3fe4f8 | 2326 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2327 | retval = 0; |
2328 | break; | |
2329 | } | |
2330 | pkt = unpack_threadid (pkt, &ref); | |
2331 | mask = mask & ~TAG_THREADID; | |
2332 | continue; | |
2333 | } | |
2334 | if (tag == TAG_EXISTS) | |
2335 | { | |
2336 | info->active = stub_unpack_int (pkt, length); | |
2337 | pkt += length; | |
2338 | mask = mask & ~(TAG_EXISTS); | |
2339 | if (length > 8) | |
2340 | { | |
8a3fe4f8 | 2341 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2342 | retval = 0; |
2343 | break; | |
2344 | } | |
2345 | continue; | |
2346 | } | |
2347 | if (tag == TAG_THREADNAME) | |
2348 | { | |
2349 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2350 | mask = mask & ~TAG_THREADNAME; | |
2351 | continue; | |
2352 | } | |
2353 | if (tag == TAG_DISPLAY) | |
2354 | { | |
2355 | pkt = unpack_string (pkt, &info->display[0], length); | |
2356 | mask = mask & ~TAG_DISPLAY; | |
2357 | continue; | |
2358 | } | |
2359 | if (tag == TAG_MOREDISPLAY) | |
2360 | { | |
2361 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2362 | mask = mask & ~TAG_MOREDISPLAY; | |
2363 | continue; | |
2364 | } | |
8a3fe4f8 | 2365 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2366 | break; /* Not a tag we know about. */ |
c906108c SS |
2367 | } |
2368 | return retval; | |
2369 | } | |
2370 | ||
2371 | static int | |
fba45db2 KB |
2372 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2373 | struct gdb_ext_thread_info *info) | |
c906108c | 2374 | { |
d01949b6 | 2375 | struct remote_state *rs = get_remote_state (); |
c906108c | 2376 | int result; |
c906108c | 2377 | |
2e9f7625 DJ |
2378 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2379 | putpkt (rs->buf); | |
6d820c5c | 2380 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2381 | |
2382 | if (rs->buf[0] == '\0') | |
2383 | return 0; | |
2384 | ||
2e9f7625 | 2385 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2386 | threadid, info); |
c906108c SS |
2387 | return result; |
2388 | } | |
2389 | ||
c906108c SS |
2390 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2391 | ||
2392 | static char * | |
fba45db2 KB |
2393 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2394 | threadref *nextthread) | |
c906108c SS |
2395 | { |
2396 | *pkt++ = 'q'; /* info query packet */ | |
2397 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2398 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2399 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2400 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2401 | *pkt = '\0'; | |
2402 | return pkt; | |
2403 | } | |
2404 | ||
2405 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2406 | ||
2407 | static int | |
fba45db2 KB |
2408 | parse_threadlist_response (char *pkt, int result_limit, |
2409 | threadref *original_echo, threadref *resultlist, | |
2410 | int *doneflag) | |
c906108c | 2411 | { |
d01949b6 | 2412 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2413 | char *limit; |
2414 | int count, resultcount, done; | |
2415 | ||
2416 | resultcount = 0; | |
2417 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2418 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2419 | /* done parse past here */ |
c906108c SS |
2420 | pkt = unpack_byte (pkt, &count); /* count field */ |
2421 | pkt = unpack_nibble (pkt, &done); | |
2422 | /* The first threadid is the argument threadid. */ | |
2423 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2424 | while ((count-- > 0) && (pkt < limit)) | |
2425 | { | |
2426 | pkt = unpack_threadid (pkt, resultlist++); | |
2427 | if (resultcount++ >= result_limit) | |
2428 | break; | |
2429 | } | |
2430 | if (doneflag) | |
2431 | *doneflag = done; | |
2432 | return resultcount; | |
2433 | } | |
2434 | ||
2435 | static int | |
fba45db2 KB |
2436 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2437 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2438 | { |
d01949b6 | 2439 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2440 | int result = 1; |
2441 | ||
23860348 | 2442 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2443 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2444 | >= get_remote_packet_size ()) | |
ea9c271d | 2445 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2446 | |
6d820c5c DJ |
2447 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2448 | putpkt (rs->buf); | |
2449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2450 | |
d8f2712d | 2451 | if (*rs->buf == '\0') |
21bce120 | 2452 | return 0; |
d8f2712d VP |
2453 | else |
2454 | *result_count = | |
0d031856 TT |
2455 | parse_threadlist_response (rs->buf + 2, result_limit, |
2456 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2457 | |
0d031856 | 2458 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2459 | { |
23860348 MS |
2460 | /* FIXME: This is a good reason to drop the packet. */ |
2461 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2462 | /* Possabilities : |
2463 | retransmit immediatly - race conditions | |
2464 | retransmit after timeout - yes | |
2465 | exit | |
2466 | wait for packet, then exit | |
2467 | */ | |
8a3fe4f8 | 2468 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2469 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2470 | } |
2471 | if (*result_count <= 0) | |
2472 | { | |
2473 | if (*done != 1) | |
2474 | { | |
8a3fe4f8 | 2475 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2476 | result = 0; |
2477 | } | |
2478 | return result; /* break; */ | |
2479 | } | |
2480 | if (*result_count > result_limit) | |
2481 | { | |
2482 | *result_count = 0; | |
8a3fe4f8 | 2483 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2484 | return 0; |
2485 | } | |
2486 | return result; | |
2487 | } | |
2488 | ||
23860348 MS |
2489 | /* This is the interface between remote and threads, remotes upper |
2490 | interface. */ | |
c906108c SS |
2491 | |
2492 | /* remote_find_new_threads retrieves the thread list and for each | |
2493 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2494 | adding the thread if it does not already exist. This involves |
c906108c SS |
2495 | getting partial thread lists from the remote target so, polling the |
2496 | quit_flag is required. */ | |
2497 | ||
2498 | ||
c906108c | 2499 | static int |
fba45db2 KB |
2500 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2501 | int looplimit) | |
c906108c | 2502 | { |
0d031856 | 2503 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2504 | int done, i, result_count; |
2505 | int startflag = 1; | |
2506 | int result = 1; | |
2507 | int loopcount = 0; | |
c906108c SS |
2508 | |
2509 | done = 0; | |
2510 | while (!done) | |
2511 | { | |
2512 | if (loopcount++ > looplimit) | |
2513 | { | |
2514 | result = 0; | |
8a3fe4f8 | 2515 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2516 | break; |
2517 | } | |
0d031856 TT |
2518 | if (!remote_get_threadlist (startflag, &rs->nextthread, |
2519 | MAXTHREADLISTRESULTS, | |
2520 | &done, &result_count, rs->resultthreadlist)) | |
c906108c SS |
2521 | { |
2522 | result = 0; | |
2523 | break; | |
2524 | } | |
23860348 | 2525 | /* Clear for later iterations. */ |
c906108c SS |
2526 | startflag = 0; |
2527 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2528 | if (result_count >= 1) | |
0d031856 TT |
2529 | copy_threadref (&rs->nextthread, |
2530 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2531 | i = 0; |
2532 | while (result_count--) | |
0d031856 | 2533 | if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context))) |
c906108c SS |
2534 | break; |
2535 | } | |
2536 | return result; | |
2537 | } | |
2538 | ||
2539 | static int | |
fba45db2 | 2540 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2541 | { |
79d7f229 | 2542 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 2543 | ptid_t ptid = ptid_build (pid, threadref_to_int (ref), 0); |
39f77062 KB |
2544 | |
2545 | if (!in_thread_list (ptid)) | |
2546 | add_thread (ptid); | |
c906108c SS |
2547 | return 1; /* continue iterator */ |
2548 | } | |
2549 | ||
2550 | #define CRAZY_MAX_THREADS 1000 | |
2551 | ||
39f77062 KB |
2552 | static ptid_t |
2553 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2554 | { |
d01949b6 | 2555 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2556 | |
2557 | putpkt ("qC"); | |
6d820c5c | 2558 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2559 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2560 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2561 | else |
2562 | return oldpid; | |
2563 | } | |
2564 | ||
802188a7 RM |
2565 | /* Find new threads for info threads command. |
2566 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2567 | */ |
cce74817 JM |
2568 | |
2569 | static void | |
fba45db2 | 2570 | remote_find_new_threads (void) |
c906108c | 2571 | { |
c5aa993b JM |
2572 | remote_threadlist_iterator (remote_newthread_step, 0, |
2573 | CRAZY_MAX_THREADS); | |
c906108c SS |
2574 | } |
2575 | ||
dc146f7c VP |
2576 | #if defined(HAVE_LIBEXPAT) |
2577 | ||
2578 | typedef struct thread_item | |
2579 | { | |
2580 | ptid_t ptid; | |
2581 | char *extra; | |
2582 | int core; | |
2583 | } thread_item_t; | |
2584 | DEF_VEC_O(thread_item_t); | |
2585 | ||
2586 | struct threads_parsing_context | |
2587 | { | |
2588 | VEC (thread_item_t) *items; | |
2589 | }; | |
2590 | ||
2591 | static void | |
2592 | start_thread (struct gdb_xml_parser *parser, | |
2593 | const struct gdb_xml_element *element, | |
2594 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2595 | { | |
2596 | struct threads_parsing_context *data = user_data; | |
2597 | ||
2598 | struct thread_item item; | |
2599 | char *id; | |
3d2c1d41 | 2600 | struct gdb_xml_value *attr; |
dc146f7c | 2601 | |
3d2c1d41 | 2602 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2603 | item.ptid = read_ptid (id, NULL); |
2604 | ||
3d2c1d41 PA |
2605 | attr = xml_find_attribute (attributes, "core"); |
2606 | if (attr != NULL) | |
2607 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2608 | else |
2609 | item.core = -1; | |
2610 | ||
2611 | item.extra = 0; | |
2612 | ||
2613 | VEC_safe_push (thread_item_t, data->items, &item); | |
2614 | } | |
2615 | ||
2616 | static void | |
2617 | end_thread (struct gdb_xml_parser *parser, | |
2618 | const struct gdb_xml_element *element, | |
2619 | void *user_data, const char *body_text) | |
2620 | { | |
2621 | struct threads_parsing_context *data = user_data; | |
2622 | ||
2623 | if (body_text && *body_text) | |
2ae2a0b7 | 2624 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2625 | } |
2626 | ||
2627 | const struct gdb_xml_attribute thread_attributes[] = { | |
2628 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2629 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2630 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2631 | }; | |
2632 | ||
2633 | const struct gdb_xml_element thread_children[] = { | |
2634 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2635 | }; | |
2636 | ||
2637 | const struct gdb_xml_element threads_children[] = { | |
2638 | { "thread", thread_attributes, thread_children, | |
2639 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2640 | start_thread, end_thread }, | |
2641 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2642 | }; | |
2643 | ||
2644 | const struct gdb_xml_element threads_elements[] = { | |
2645 | { "threads", NULL, threads_children, | |
2646 | GDB_XML_EF_NONE, NULL, NULL }, | |
2647 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2648 | }; | |
2649 | ||
02357a4a PA |
2650 | /* Discard the contents of the constructed thread info context. */ |
2651 | ||
2652 | static void | |
2653 | clear_threads_parsing_context (void *p) | |
2654 | { | |
2655 | struct threads_parsing_context *context = p; | |
2656 | int i; | |
2657 | struct thread_item *item; | |
2658 | ||
2659 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2660 | xfree (item->extra); | |
2661 | ||
2662 | VEC_free (thread_item_t, context->items); | |
2663 | } | |
2664 | ||
dc146f7c VP |
2665 | #endif |
2666 | ||
9d1f7ab2 MS |
2667 | /* |
2668 | * Find all threads for info threads command. | |
2669 | * Uses new thread protocol contributed by Cisco. | |
2670 | * Falls back and attempts to use the older method (above) | |
2671 | * if the target doesn't respond to the new method. | |
2672 | */ | |
2673 | ||
0f71a2f6 | 2674 | static void |
28439f5e | 2675 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2676 | { |
d01949b6 | 2677 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2678 | char *bufp; |
79d7f229 | 2679 | ptid_t new_thread; |
0f71a2f6 | 2680 | |
5d93a237 | 2681 | if (rs->remote_desc == 0) /* paranoia */ |
8a3fe4f8 | 2682 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2683 | |
dc146f7c | 2684 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2685 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
2686 | { |
2687 | char *xml = target_read_stralloc (¤t_target, | |
2688 | TARGET_OBJECT_THREADS, NULL); | |
2689 | ||
2690 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2691 | |
dc146f7c VP |
2692 | if (xml && *xml) |
2693 | { | |
dc146f7c | 2694 | struct threads_parsing_context context; |
dc146f7c | 2695 | |
efc0eabd PA |
2696 | context.items = NULL; |
2697 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2698 | |
efc0eabd PA |
2699 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2700 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2701 | { |
2702 | int i; | |
2703 | struct thread_item *item; | |
2704 | ||
3e43a32a MS |
2705 | for (i = 0; |
2706 | VEC_iterate (thread_item_t, context.items, i, item); | |
2707 | ++i) | |
dc146f7c VP |
2708 | { |
2709 | if (!ptid_equal (item->ptid, null_ptid)) | |
2710 | { | |
2711 | struct private_thread_info *info; | |
2712 | /* In non-stop mode, we assume new found threads | |
2713 | are running until proven otherwise with a | |
2714 | stop reply. In all-stop, we can only get | |
2715 | here if all threads are stopped. */ | |
2716 | int running = non_stop ? 1 : 0; | |
2717 | ||
2718 | remote_notice_new_inferior (item->ptid, running); | |
2719 | ||
2720 | info = demand_private_info (item->ptid); | |
2721 | info->core = item->core; | |
2722 | info->extra = item->extra; | |
02357a4a | 2723 | item->extra = NULL; |
dc146f7c | 2724 | } |
dc146f7c VP |
2725 | } |
2726 | } | |
dc146f7c VP |
2727 | } |
2728 | ||
2729 | do_cleanups (back_to); | |
2730 | return; | |
2731 | } | |
2732 | #endif | |
2733 | ||
b80fafe3 | 2734 | if (rs->use_threadinfo_query) |
9d1f7ab2 MS |
2735 | { |
2736 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2737 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2738 | bufp = rs->buf; |
9d1f7ab2 | 2739 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2740 | { |
44d594fd PA |
2741 | struct cleanup *old_chain; |
2742 | char *saved_reply; | |
2743 | ||
2744 | /* remote_notice_new_inferior (in the loop below) may make | |
2745 | new RSP calls, which clobber rs->buf. Work with a | |
2746 | copy. */ | |
2747 | bufp = saved_reply = xstrdup (rs->buf); | |
2748 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2749 | ||
9d1f7ab2 MS |
2750 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2751 | { | |
2752 | do | |
2753 | { | |
82f73884 | 2754 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2755 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2756 | { |
74531fed | 2757 | /* In non-stop mode, we assume new found threads |
1941c569 | 2758 | are running until proven otherwise with a |
74531fed PA |
2759 | stop reply. In all-stop, we can only get |
2760 | here if all threads are stopped. */ | |
1941c569 PA |
2761 | int running = non_stop ? 1 : 0; |
2762 | ||
2763 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2764 | } |
9d1f7ab2 MS |
2765 | } |
2766 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2767 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2768 | putpkt ("qsThreadInfo"); |
6d820c5c | 2769 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2770 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2771 | } |
44d594fd | 2772 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2773 | return; /* done */ |
2774 | } | |
2775 | } | |
2776 | ||
74531fed PA |
2777 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2778 | if (non_stop) | |
2779 | return; | |
2780 | ||
23860348 | 2781 | /* Else fall back to old method based on jmetzler protocol. */ |
b80fafe3 | 2782 | rs->use_threadinfo_query = 0; |
9d1f7ab2 MS |
2783 | remote_find_new_threads (); |
2784 | return; | |
2785 | } | |
2786 | ||
802188a7 | 2787 | /* |
9d1f7ab2 MS |
2788 | * Collect a descriptive string about the given thread. |
2789 | * The target may say anything it wants to about the thread | |
2790 | * (typically info about its blocked / runnable state, name, etc.). | |
2791 | * This string will appear in the info threads display. | |
802188a7 | 2792 | * |
9d1f7ab2 MS |
2793 | * Optional: targets are not required to implement this function. |
2794 | */ | |
2795 | ||
2796 | static char * | |
c15906d8 | 2797 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 2798 | { |
d01949b6 | 2799 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2800 | int result; |
2801 | int set; | |
2802 | threadref id; | |
2803 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2804 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2805 | int n = 0; /* position in display_buf */ |
2806 | ||
5d93a237 | 2807 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2808 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2809 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2810 | |
60e569b9 | 2811 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 2812 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
2813 | /* This is the main thread which was added by GDB. The remote |
2814 | server doesn't know about it. */ | |
2815 | return NULL; | |
2816 | ||
4082afcc | 2817 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
2818 | { |
2819 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2820 | |
dc146f7c VP |
2821 | if (info && info->private) |
2822 | return info->private->extra; | |
2823 | else | |
2824 | return NULL; | |
2825 | } | |
2826 | ||
b80fafe3 | 2827 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2828 | { |
82f73884 PA |
2829 | char *b = rs->buf; |
2830 | char *endb = rs->buf + get_remote_packet_size (); | |
2831 | ||
2832 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2833 | b += strlen (b); | |
2834 | write_ptid (b, endb, tp->ptid); | |
2835 | ||
2e9f7625 | 2836 | putpkt (rs->buf); |
6d820c5c | 2837 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2838 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2839 | { |
2e9f7625 DJ |
2840 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2841 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2842 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2843 | return display_buf; |
2844 | } | |
0f71a2f6 | 2845 | } |
9d1f7ab2 MS |
2846 | |
2847 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2848 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2849 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2850 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 2851 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
2852 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2853 | if (threadinfo.active) | |
0f71a2f6 | 2854 | { |
9d1f7ab2 | 2855 | if (*threadinfo.shortname) |
2bc416ba | 2856 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2857 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2858 | if (*threadinfo.display) |
2bc416ba | 2859 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2860 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2861 | if (*threadinfo.more_display) |
2bc416ba | 2862 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2863 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2864 | |
2865 | if (n > 0) | |
c5aa993b | 2866 | { |
23860348 | 2867 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2868 | if (',' == display_buf[n-1]) |
2869 | display_buf[n-1] = ' '; | |
2870 | return display_buf; | |
c5aa993b | 2871 | } |
0f71a2f6 | 2872 | } |
9d1f7ab2 | 2873 | return NULL; |
0f71a2f6 | 2874 | } |
c906108c | 2875 | \f |
c5aa993b | 2876 | |
0fb4aa4b | 2877 | static int |
61fc905d | 2878 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
2879 | struct static_tracepoint_marker *marker) |
2880 | { | |
2881 | struct remote_state *rs = get_remote_state (); | |
2882 | char *p = rs->buf; | |
2883 | ||
bba74b36 | 2884 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2885 | p += strlen (p); |
2886 | p += hexnumstr (p, addr); | |
2887 | putpkt (rs->buf); | |
2888 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2889 | p = rs->buf; | |
2890 | ||
2891 | if (*p == 'E') | |
2892 | error (_("Remote failure reply: %s"), p); | |
2893 | ||
2894 | if (*p++ == 'm') | |
2895 | { | |
2896 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2897 | return 1; | |
2898 | } | |
2899 | ||
2900 | return 0; | |
2901 | } | |
2902 | ||
0fb4aa4b | 2903 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
2904 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
2905 | const char *strid) | |
0fb4aa4b PA |
2906 | { |
2907 | struct remote_state *rs = get_remote_state (); | |
2908 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2909 | struct static_tracepoint_marker *marker = NULL; | |
2910 | struct cleanup *old_chain; | |
2911 | char *p; | |
2912 | ||
2913 | /* Ask for a first packet of static tracepoint marker | |
2914 | definition. */ | |
2915 | putpkt ("qTfSTM"); | |
2916 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2917 | p = rs->buf; | |
2918 | if (*p == 'E') | |
2919 | error (_("Remote failure reply: %s"), p); | |
2920 | ||
2921 | old_chain = make_cleanup (free_current_marker, &marker); | |
2922 | ||
2923 | while (*p++ == 'm') | |
2924 | { | |
2925 | if (marker == NULL) | |
2926 | marker = XCNEW (struct static_tracepoint_marker); | |
2927 | ||
2928 | do | |
2929 | { | |
2930 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2931 | ||
2932 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2933 | { | |
2934 | VEC_safe_push (static_tracepoint_marker_p, | |
2935 | markers, marker); | |
2936 | marker = NULL; | |
2937 | } | |
2938 | else | |
2939 | { | |
2940 | release_static_tracepoint_marker (marker); | |
2941 | memset (marker, 0, sizeof (*marker)); | |
2942 | } | |
2943 | } | |
2944 | while (*p++ == ','); /* comma-separated list */ | |
2945 | /* Ask for another packet of static tracepoint definition. */ | |
2946 | putpkt ("qTsSTM"); | |
2947 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2948 | p = rs->buf; | |
2949 | } | |
2950 | ||
2951 | do_cleanups (old_chain); | |
2952 | return markers; | |
2953 | } | |
2954 | ||
2955 | \f | |
10760264 JB |
2956 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2957 | ||
2958 | static ptid_t | |
1e6b91a4 | 2959 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 2960 | { |
ba348170 | 2961 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
2962 | } |
2963 | \f | |
2964 | ||
24b06219 | 2965 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2966 | |
2967 | static void | |
fba45db2 | 2968 | extended_remote_restart (void) |
c906108c | 2969 | { |
d01949b6 | 2970 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2971 | |
2972 | /* Send the restart command; for reasons I don't understand the | |
2973 | remote side really expects a number after the "R". */ | |
ea9c271d | 2974 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2975 | putpkt (rs->buf); |
c906108c | 2976 | |
ad9a8f3f | 2977 | remote_fileio_reset (); |
c906108c SS |
2978 | } |
2979 | \f | |
2980 | /* Clean up connection to a remote debugger. */ | |
2981 | ||
c906108c | 2982 | static void |
de90e03d | 2983 | remote_close (struct target_ops *self) |
c906108c | 2984 | { |
5d93a237 TT |
2985 | struct remote_state *rs = get_remote_state (); |
2986 | ||
2987 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
2988 | return; /* already closed */ |
2989 | ||
2990 | /* Make sure we leave stdin registered in the event loop, and we | |
2991 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 2992 | remote_terminal_ours (self); |
ce5ce7ed | 2993 | |
5d93a237 TT |
2994 | serial_close (rs->remote_desc); |
2995 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
2996 | |
2997 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2998 | of all the inferiors and their threads we were controlling. |
2999 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3000 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3001 | inferior_ptid = null_ptid; |
f67fd822 | 3002 | discard_all_inferiors (); |
ce5ce7ed | 3003 | |
f48ff2a7 YQ |
3004 | /* We are closing the remote target, so we should discard |
3005 | everything of this target. */ | |
bcc75809 | 3006 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3007 | |
3008 | if (remote_async_inferior_event_token) | |
3009 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3010 | |
5965e028 | 3011 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3012 | |
3013 | trace_reset_local_state (); | |
c906108c SS |
3014 | } |
3015 | ||
23860348 | 3016 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3017 | |
3018 | static void | |
fba45db2 | 3019 | get_offsets (void) |
c906108c | 3020 | { |
d01949b6 | 3021 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3022 | char *buf; |
085dd6e6 | 3023 | char *ptr; |
31d99776 DJ |
3024 | int lose, num_segments = 0, do_sections, do_segments; |
3025 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3026 | struct section_offsets *offs; |
31d99776 DJ |
3027 | struct symfile_segment_data *data; |
3028 | ||
3029 | if (symfile_objfile == NULL) | |
3030 | return; | |
c906108c SS |
3031 | |
3032 | putpkt ("qOffsets"); | |
6d820c5c | 3033 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3034 | buf = rs->buf; |
c906108c SS |
3035 | |
3036 | if (buf[0] == '\000') | |
3037 | return; /* Return silently. Stub doesn't support | |
23860348 | 3038 | this command. */ |
c906108c SS |
3039 | if (buf[0] == 'E') |
3040 | { | |
8a3fe4f8 | 3041 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3042 | return; |
3043 | } | |
3044 | ||
3045 | /* Pick up each field in turn. This used to be done with scanf, but | |
3046 | scanf will make trouble if CORE_ADDR size doesn't match | |
3047 | conversion directives correctly. The following code will work | |
3048 | with any size of CORE_ADDR. */ | |
3049 | text_addr = data_addr = bss_addr = 0; | |
3050 | ptr = buf; | |
3051 | lose = 0; | |
3052 | ||
3053 | if (strncmp (ptr, "Text=", 5) == 0) | |
3054 | { | |
3055 | ptr += 5; | |
3056 | /* Don't use strtol, could lose on big values. */ | |
3057 | while (*ptr && *ptr != ';') | |
3058 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3059 | |
31d99776 DJ |
3060 | if (strncmp (ptr, ";Data=", 6) == 0) |
3061 | { | |
3062 | ptr += 6; | |
3063 | while (*ptr && *ptr != ';') | |
3064 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3065 | } | |
3066 | else | |
3067 | lose = 1; | |
3068 | ||
3069 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3070 | { | |
3071 | ptr += 5; | |
3072 | while (*ptr && *ptr != ';') | |
3073 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3074 | |
31d99776 DJ |
3075 | if (bss_addr != data_addr) |
3076 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3077 | } | |
3078 | else | |
3079 | lose = 1; | |
3080 | } | |
3081 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3082 | { |
31d99776 DJ |
3083 | ptr += 8; |
3084 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3085 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3086 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3087 | num_segments = 1; | |
3088 | ||
3089 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3090 | { | |
3091 | ptr += 9; | |
3092 | while (*ptr && *ptr != ';') | |
3093 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3094 | num_segments++; | |
3095 | } | |
c906108c SS |
3096 | } |
3097 | else | |
3098 | lose = 1; | |
3099 | ||
3100 | if (lose) | |
8a3fe4f8 | 3101 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3102 | else if (*ptr != '\0') |
3103 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3104 | |
802188a7 | 3105 | offs = ((struct section_offsets *) |
a39a16c4 | 3106 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3107 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3108 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3109 | |
31d99776 DJ |
3110 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3111 | do_segments = (data != NULL); | |
3112 | do_sections = num_segments == 0; | |
c906108c | 3113 | |
28c32713 | 3114 | if (num_segments > 0) |
31d99776 | 3115 | { |
31d99776 DJ |
3116 | segments[0] = text_addr; |
3117 | segments[1] = data_addr; | |
3118 | } | |
28c32713 JB |
3119 | /* If we have two segments, we can still try to relocate everything |
3120 | by assuming that the .text and .data offsets apply to the whole | |
3121 | text and data segments. Convert the offsets given in the packet | |
3122 | to base addresses for symfile_map_offsets_to_segments. */ | |
3123 | else if (data && data->num_segments == 2) | |
3124 | { | |
3125 | segments[0] = data->segment_bases[0] + text_addr; | |
3126 | segments[1] = data->segment_bases[1] + data_addr; | |
3127 | num_segments = 2; | |
3128 | } | |
8d385431 DJ |
3129 | /* If the object file has only one segment, assume that it is text |
3130 | rather than data; main programs with no writable data are rare, | |
3131 | but programs with no code are useless. Of course the code might | |
3132 | have ended up in the data segment... to detect that we would need | |
3133 | the permissions here. */ | |
3134 | else if (data && data->num_segments == 1) | |
3135 | { | |
3136 | segments[0] = data->segment_bases[0] + text_addr; | |
3137 | num_segments = 1; | |
3138 | } | |
28c32713 JB |
3139 | /* There's no way to relocate by segment. */ |
3140 | else | |
3141 | do_segments = 0; | |
31d99776 DJ |
3142 | |
3143 | if (do_segments) | |
3144 | { | |
3145 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3146 | offs, num_segments, segments); | |
3147 | ||
3148 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3149 | error (_("Can not handle qOffsets TextSeg " |
3150 | "response with this symbol file")); | |
31d99776 DJ |
3151 | |
3152 | if (ret > 0) | |
3153 | do_sections = 0; | |
3154 | } | |
c906108c | 3155 | |
9ef895d6 DJ |
3156 | if (data) |
3157 | free_symfile_segment_data (data); | |
31d99776 DJ |
3158 | |
3159 | if (do_sections) | |
3160 | { | |
3161 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3162 | ||
3e43a32a MS |
3163 | /* This is a temporary kludge to force data and bss to use the |
3164 | same offsets because that's what nlmconv does now. The real | |
3165 | solution requires changes to the stub and remote.c that I | |
3166 | don't have time to do right now. */ | |
31d99776 DJ |
3167 | |
3168 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3169 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3170 | } | |
c906108c SS |
3171 | |
3172 | objfile_relocate (symfile_objfile, offs); | |
3173 | } | |
3174 | ||
74531fed PA |
3175 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3176 | threads we know are stopped already. This is used during the | |
3177 | initial remote connection in non-stop mode --- threads that are | |
3178 | reported as already being stopped are left stopped. */ | |
3179 | ||
3180 | static int | |
3181 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3182 | { | |
3183 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3184 | if (peek_stop_reply (thread->ptid)) | |
3185 | set_stop_requested (thread->ptid, 1); | |
3186 | ||
3187 | return 0; | |
3188 | } | |
3189 | ||
9a7071a8 JB |
3190 | /* Send interrupt_sequence to remote target. */ |
3191 | static void | |
eeae04df | 3192 | send_interrupt_sequence (void) |
9a7071a8 | 3193 | { |
5d93a237 TT |
3194 | struct remote_state *rs = get_remote_state (); |
3195 | ||
9a7071a8 | 3196 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3197 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3198 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3199 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3200 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3201 | { | |
5d93a237 | 3202 | serial_send_break (rs->remote_desc); |
c33e31fd | 3203 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3204 | } |
3205 | else | |
3206 | internal_error (__FILE__, __LINE__, | |
3207 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3208 | interrupt_sequence_mode); | |
3209 | } | |
3210 | ||
3405876a PA |
3211 | |
3212 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3213 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3214 | ||
3215 | static ptid_t | |
3216 | stop_reply_extract_thread (char *stop_reply) | |
3217 | { | |
3218 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3219 | { | |
3220 | char *p; | |
3221 | ||
3222 | /* Txx r:val ; r:val (...) */ | |
3223 | p = &stop_reply[3]; | |
3224 | ||
3225 | /* Look for "register" named "thread". */ | |
3226 | while (*p != '\0') | |
3227 | { | |
3228 | char *p1; | |
3229 | ||
3230 | p1 = strchr (p, ':'); | |
3231 | if (p1 == NULL) | |
3232 | return null_ptid; | |
3233 | ||
3234 | if (strncmp (p, "thread", p1 - p) == 0) | |
3235 | return read_ptid (++p1, &p); | |
3236 | ||
3237 | p1 = strchr (p, ';'); | |
3238 | if (p1 == NULL) | |
3239 | return null_ptid; | |
3240 | p1++; | |
3241 | ||
3242 | p = p1; | |
3243 | } | |
3244 | } | |
3245 | ||
3246 | return null_ptid; | |
3247 | } | |
3248 | ||
b7ea362b PA |
3249 | /* Determine the remote side's current thread. If we have a stop |
3250 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3251 | "thread" register we can extract the current thread from. If not, | |
3252 | ask the remote which is the current thread with qC. The former | |
3253 | method avoids a roundtrip. */ | |
3254 | ||
3255 | static ptid_t | |
3256 | get_current_thread (char *wait_status) | |
3257 | { | |
3258 | ptid_t ptid; | |
3259 | ||
3260 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3261 | the target architecture, which we haven't yet fully determined at | |
3262 | this point. */ | |
3263 | if (wait_status != NULL) | |
3264 | ptid = stop_reply_extract_thread (wait_status); | |
3265 | if (ptid_equal (ptid, null_ptid)) | |
3266 | ptid = remote_current_thread (inferior_ptid); | |
3267 | ||
3268 | return ptid; | |
3269 | } | |
3270 | ||
49c62f2e PA |
3271 | /* Query the remote target for which is the current thread/process, |
3272 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3273 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3274 | to return the current thread. |
3275 | ||
3276 | This function is called after handling the '?' or 'vRun' packets, | |
3277 | whose response is a stop reply from which we can also try | |
3278 | extracting the thread. If the target doesn't support the explicit | |
3279 | qC query, we infer the current thread from that stop reply, passed | |
3280 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3281 | |
3282 | static void | |
3405876a | 3283 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3284 | { |
3285 | struct remote_state *rs = get_remote_state (); | |
3286 | int fake_pid_p = 0; | |
3405876a | 3287 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3288 | |
3289 | inferior_ptid = null_ptid; | |
3290 | ||
b7ea362b PA |
3291 | /* Now, if we have thread information, update inferior_ptid. */ |
3292 | ptid = get_current_thread (wait_status); | |
3405876a | 3293 | |
49c62f2e PA |
3294 | if (!ptid_equal (ptid, null_ptid)) |
3295 | { | |
3296 | if (!remote_multi_process_p (rs)) | |
3297 | fake_pid_p = 1; | |
3298 | ||
3299 | inferior_ptid = ptid; | |
3300 | } | |
3301 | else | |
3302 | { | |
3303 | /* Without this, some commands which require an active target | |
3304 | (such as kill) won't work. This variable serves (at least) | |
3305 | double duty as both the pid of the target process (if it has | |
3306 | such), and as a flag indicating that a target is active. */ | |
3307 | inferior_ptid = magic_null_ptid; | |
3308 | fake_pid_p = 1; | |
3309 | } | |
3310 | ||
3311 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3312 | ||
3313 | /* Add the main thread. */ | |
3314 | add_thread_silent (inferior_ptid); | |
3315 | } | |
3316 | ||
9cbc821d | 3317 | static void |
04bd08de | 3318 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3319 | { |
c8d104ad PA |
3320 | struct remote_state *rs = get_remote_state (); |
3321 | struct packet_config *noack_config; | |
2d717e4f | 3322 | char *wait_status = NULL; |
8621d6a9 | 3323 | |
23860348 | 3324 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3325 | QUIT; |
c906108c | 3326 | |
9a7071a8 JB |
3327 | if (interrupt_on_connect) |
3328 | send_interrupt_sequence (); | |
3329 | ||
57e12211 | 3330 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3331 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3332 | |
1e51243a PA |
3333 | /* Signal other parts that we're going through the initial setup, |
3334 | and so things may not be stable yet. */ | |
3335 | rs->starting_up = 1; | |
3336 | ||
c8d104ad PA |
3337 | /* The first packet we send to the target is the optional "supported |
3338 | packets" request. If the target can answer this, it will tell us | |
3339 | which later probes to skip. */ | |
3340 | remote_query_supported (); | |
3341 | ||
d914c394 | 3342 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3343 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3344 | remote_set_permissions (target); |
d914c394 | 3345 | |
c8d104ad PA |
3346 | /* Next, we possibly activate noack mode. |
3347 | ||
3348 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3349 | enable noack mode if the stub reported a wish for it with | |
3350 | qSupported. | |
3351 | ||
3352 | If set to TRUE, then enable noack mode even if the stub didn't | |
3353 | report it in qSupported. If the stub doesn't reply OK, the | |
3354 | session ends with an error. | |
3355 | ||
3356 | If FALSE, then don't activate noack mode, regardless of what the | |
3357 | stub claimed should be the default with qSupported. */ | |
3358 | ||
3359 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3360 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3361 | { |
3362 | putpkt ("QStartNoAckMode"); | |
3363 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3364 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3365 | rs->noack_mode = 1; | |
3366 | } | |
3367 | ||
04bd08de | 3368 | if (extended_p) |
5fe04517 PA |
3369 | { |
3370 | /* Tell the remote that we are using the extended protocol. */ | |
3371 | putpkt ("!"); | |
3372 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3373 | } | |
3374 | ||
9b224c5e PA |
3375 | /* Let the target know which signals it is allowed to pass down to |
3376 | the program. */ | |
3377 | update_signals_program_target (); | |
3378 | ||
d962ef82 DJ |
3379 | /* Next, if the target can specify a description, read it. We do |
3380 | this before anything involving memory or registers. */ | |
3381 | target_find_description (); | |
3382 | ||
6c95b8df PA |
3383 | /* Next, now that we know something about the target, update the |
3384 | address spaces in the program spaces. */ | |
3385 | update_address_spaces (); | |
3386 | ||
50c71eaf PA |
3387 | /* On OSs where the list of libraries is global to all |
3388 | processes, we fetch them early. */ | |
f5656ead | 3389 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3390 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3391 | |
74531fed PA |
3392 | if (non_stop) |
3393 | { | |
4082afcc | 3394 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3395 | error (_("Non-stop mode requested, but remote " |
3396 | "does not support non-stop")); | |
74531fed PA |
3397 | |
3398 | putpkt ("QNonStop:1"); | |
3399 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3400 | ||
3401 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3402 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3403 | |
3404 | /* Find about threads and processes the stub is already | |
3405 | controlling. We default to adding them in the running state. | |
3406 | The '?' query below will then tell us about which threads are | |
3407 | stopped. */ | |
04bd08de | 3408 | remote_threads_info (target); |
74531fed | 3409 | } |
4082afcc | 3410 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3411 | { |
3412 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3413 | Request it explicitly. */ |
74531fed PA |
3414 | putpkt ("QNonStop:0"); |
3415 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3416 | ||
3417 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3418 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3419 | } |
3420 | ||
a0743c90 YQ |
3421 | /* Upload TSVs regardless of whether the target is running or not. The |
3422 | remote stub, such as GDBserver, may have some predefined or builtin | |
3423 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3424 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3425 | { |
3426 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3427 | ||
181e3713 | 3428 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3429 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3430 | } | |
3431 | ||
2d717e4f DJ |
3432 | /* Check whether the target is running now. */ |
3433 | putpkt ("?"); | |
3434 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3435 | ||
74531fed | 3436 | if (!non_stop) |
2d717e4f | 3437 | { |
e714e1bf UW |
3438 | ptid_t ptid; |
3439 | int fake_pid_p = 0; | |
3440 | struct inferior *inf; | |
3441 | ||
74531fed | 3442 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3443 | { |
04bd08de | 3444 | if (!extended_p) |
74531fed | 3445 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3446 | |
3447 | /* We're connected, but not running. Drop out before we | |
3448 | call start_remote. */ | |
e278ad5b | 3449 | rs->starting_up = 0; |
c35b1492 | 3450 | return; |
2d717e4f DJ |
3451 | } |
3452 | else | |
74531fed | 3453 | { |
74531fed PA |
3454 | /* Save the reply for later. */ |
3455 | wait_status = alloca (strlen (rs->buf) + 1); | |
3456 | strcpy (wait_status, rs->buf); | |
3457 | } | |
3458 | ||
b7ea362b PA |
3459 | /* Fetch thread list. */ |
3460 | target_find_new_threads (); | |
3461 | ||
74531fed PA |
3462 | /* Let the stub know that we want it to return the thread. */ |
3463 | set_continue_thread (minus_one_ptid); | |
3464 | ||
b7ea362b PA |
3465 | if (thread_count () == 0) |
3466 | { | |
3467 | /* Target has no concept of threads at all. GDB treats | |
3468 | non-threaded target as single-threaded; add a main | |
3469 | thread. */ | |
3470 | add_current_inferior_and_thread (wait_status); | |
3471 | } | |
3472 | else | |
3473 | { | |
3474 | /* We have thread information; select the thread the target | |
3475 | says should be current. If we're reconnecting to a | |
3476 | multi-threaded program, this will ideally be the thread | |
3477 | that last reported an event before GDB disconnected. */ | |
3478 | inferior_ptid = get_current_thread (wait_status); | |
3479 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3480 | { | |
3481 | /* Odd... The target was able to list threads, but not | |
3482 | tell us which thread was current (no "thread" | |
3483 | register in T stop reply?). Just pick the first | |
3484 | thread in the thread list then. */ | |
3485 | inferior_ptid = thread_list->ptid; | |
3486 | } | |
3487 | } | |
74531fed | 3488 | |
6e586cc5 YQ |
3489 | /* init_wait_for_inferior should be called before get_offsets in order |
3490 | to manage `inserted' flag in bp loc in a correct state. | |
3491 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3492 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3493 | start_remote, set `inserted' flag to 1. In the initialization of | |
3494 | inferior, breakpoint_init_inferior should be called first, and then | |
3495 | breakpoint_re_set can be called. If this order is broken, state of | |
3496 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3497 | manipulation. */ | |
3498 | init_wait_for_inferior (); | |
3499 | ||
74531fed PA |
3500 | get_offsets (); /* Get text, data & bss offsets. */ |
3501 | ||
d962ef82 DJ |
3502 | /* If we could not find a description using qXfer, and we know |
3503 | how to do it some other way, try again. This is not | |
3504 | supported for non-stop; it could be, but it is tricky if | |
3505 | there are no stopped threads when we connect. */ | |
04bd08de | 3506 | if (remote_read_description_p (target) |
f5656ead | 3507 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3508 | { |
3509 | target_clear_description (); | |
3510 | target_find_description (); | |
3511 | } | |
3512 | ||
74531fed PA |
3513 | /* Use the previously fetched status. */ |
3514 | gdb_assert (wait_status != NULL); | |
3515 | strcpy (rs->buf, wait_status); | |
3516 | rs->cached_wait_status = 1; | |
3517 | ||
3518 | immediate_quit--; | |
04bd08de | 3519 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3520 | } |
3521 | else | |
3522 | { | |
68c97600 PA |
3523 | /* Clear WFI global state. Do this before finding about new |
3524 | threads and inferiors, and setting the current inferior. | |
3525 | Otherwise we would clear the proceed status of the current | |
3526 | inferior when we want its stop_soon state to be preserved | |
3527 | (see notice_new_inferior). */ | |
3528 | init_wait_for_inferior (); | |
3529 | ||
74531fed PA |
3530 | /* In non-stop, we will either get an "OK", meaning that there |
3531 | are no stopped threads at this time; or, a regular stop | |
3532 | reply. In the latter case, there may be more than one thread | |
3533 | stopped --- we pull them all out using the vStopped | |
3534 | mechanism. */ | |
3535 | if (strcmp (rs->buf, "OK") != 0) | |
3536 | { | |
722247f1 | 3537 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3538 | |
722247f1 YQ |
3539 | /* remote_notif_get_pending_replies acks this one, and gets |
3540 | the rest out. */ | |
f48ff2a7 | 3541 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3542 | = remote_notif_parse (notif, rs->buf); |
3543 | remote_notif_get_pending_events (notif); | |
c906108c | 3544 | |
74531fed PA |
3545 | /* Make sure that threads that were stopped remain |
3546 | stopped. */ | |
3547 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3548 | } | |
2d717e4f | 3549 | |
74531fed PA |
3550 | if (target_can_async_p ()) |
3551 | target_async (inferior_event_handler, 0); | |
c906108c | 3552 | |
74531fed PA |
3553 | if (thread_count () == 0) |
3554 | { | |
04bd08de | 3555 | if (!extended_p) |
74531fed | 3556 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3557 | |
c35b1492 PA |
3558 | /* We're connected, but not running. Drop out before we |
3559 | call start_remote. */ | |
e278ad5b | 3560 | rs->starting_up = 0; |
c35b1492 PA |
3561 | return; |
3562 | } | |
74531fed PA |
3563 | |
3564 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3565 | |
74531fed PA |
3566 | /* Force the stub to choose a thread. */ |
3567 | set_general_thread (null_ptid); | |
c906108c | 3568 | |
74531fed PA |
3569 | /* Query it. */ |
3570 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3571 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3572 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3573 | |
74531fed PA |
3574 | get_offsets (); /* Get text, data & bss offsets. */ |
3575 | ||
3576 | /* In non-stop mode, any cached wait status will be stored in | |
3577 | the stop reply queue. */ | |
3578 | gdb_assert (wait_status == NULL); | |
f0223081 | 3579 | |
2455069d | 3580 | /* Report all signals during attach/startup. */ |
94bedb42 | 3581 | remote_pass_signals (target, 0, NULL); |
74531fed | 3582 | } |
c8d104ad | 3583 | |
c8d104ad PA |
3584 | /* If we connected to a live target, do some additional setup. */ |
3585 | if (target_has_execution) | |
3586 | { | |
f4ccffad | 3587 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3588 | remote_check_symbols (); |
c8d104ad | 3589 | } |
50c71eaf | 3590 | |
d5551862 SS |
3591 | /* Possibly the target has been engaged in a trace run started |
3592 | previously; find out where things are at. */ | |
8bd200f1 | 3593 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3594 | { |
00bf0b85 | 3595 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3596 | |
00bf0b85 SS |
3597 | if (current_trace_status ()->running) |
3598 | printf_filtered (_("Trace is already running on the target.\n")); | |
3599 | ||
ab6617cc | 3600 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3601 | |
3602 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3603 | } |
3604 | ||
1e51243a PA |
3605 | /* The thread and inferior lists are now synchronized with the |
3606 | target, our symbols have been relocated, and we're merged the | |
3607 | target's tracepoints with ours. We're done with basic start | |
3608 | up. */ | |
3609 | rs->starting_up = 0; | |
3610 | ||
2567c7d9 | 3611 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3612 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3613 | && breakpoints_always_inserted_mode ()) |
3614 | insert_breakpoints (); | |
c906108c SS |
3615 | } |
3616 | ||
3617 | /* Open a connection to a remote debugger. | |
3618 | NAME is the filename used for communication. */ | |
3619 | ||
3620 | static void | |
fba45db2 | 3621 | remote_open (char *name, int from_tty) |
c906108c | 3622 | { |
75c99385 | 3623 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3624 | } |
3625 | ||
c906108c SS |
3626 | /* Open a connection to a remote debugger using the extended |
3627 | remote gdb protocol. NAME is the filename used for communication. */ | |
3628 | ||
3629 | static void | |
fba45db2 | 3630 | extended_remote_open (char *name, int from_tty) |
c906108c | 3631 | { |
75c99385 | 3632 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3633 | } |
3634 | ||
ca4f7f8b PA |
3635 | /* Reset all packets back to "unknown support". Called when opening a |
3636 | new connection to a remote target. */ | |
c906108c | 3637 | |
d471ea57 | 3638 | static void |
ca4f7f8b | 3639 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3640 | { |
3641 | int i; | |
a744cf53 | 3642 | |
444abaca | 3643 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3644 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3645 | } |
3646 | ||
ca4f7f8b PA |
3647 | /* Initialize all packet configs. */ |
3648 | ||
3649 | static void | |
3650 | init_all_packet_configs (void) | |
3651 | { | |
3652 | int i; | |
3653 | ||
3654 | for (i = 0; i < PACKET_MAX; i++) | |
3655 | { | |
3656 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3657 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3658 | } | |
3659 | } | |
3660 | ||
23860348 | 3661 | /* Symbol look-up. */ |
dc8acb97 MS |
3662 | |
3663 | static void | |
36d25514 | 3664 | remote_check_symbols (void) |
dc8acb97 | 3665 | { |
d01949b6 | 3666 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 3667 | char *msg, *reply, *tmp; |
3b7344d5 | 3668 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
3669 | int end; |
3670 | ||
63154eca PA |
3671 | /* The remote side has no concept of inferiors that aren't running |
3672 | yet, it only knows about running processes. If we're connected | |
3673 | but our current inferior is not running, we should not invite the | |
3674 | remote target to request symbol lookups related to its | |
3675 | (unrelated) current process. */ | |
3676 | if (!target_has_execution) | |
3677 | return; | |
3678 | ||
4082afcc | 3679 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
3680 | return; |
3681 | ||
63154eca PA |
3682 | /* Make sure the remote is pointing at the right process. Note |
3683 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3684 | set_general_process (); |
3685 | ||
6d820c5c DJ |
3686 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3687 | because we need both at the same time. */ | |
ea9c271d | 3688 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3689 | |
23860348 | 3690 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3691 | |
3692 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3693 | getpkt (&rs->buf, &rs->buf_size, 0); |
3694 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3695 | reply = rs->buf; |
dc8acb97 MS |
3696 | |
3697 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3698 | { | |
77e371c0 TT |
3699 | struct bound_minimal_symbol sym; |
3700 | ||
dc8acb97 | 3701 | tmp = &reply[8]; |
cfd77fa1 | 3702 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3703 | msg[end] = '\0'; |
3704 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 3705 | if (sym.minsym == NULL) |
ea9c271d | 3706 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3707 | else |
2bbe3cc1 | 3708 | { |
f5656ead | 3709 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 3710 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
3711 | |
3712 | /* If this is a function address, return the start of code | |
3713 | instead of any data function descriptor. */ | |
f5656ead | 3714 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3715 | sym_addr, |
3716 | ¤t_target); | |
3717 | ||
3718 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3719 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3720 | } |
3721 | ||
dc8acb97 | 3722 | putpkt (msg); |
6d820c5c | 3723 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3724 | reply = rs->buf; |
dc8acb97 MS |
3725 | } |
3726 | } | |
3727 | ||
9db8d71f DJ |
3728 | static struct serial * |
3729 | remote_serial_open (char *name) | |
3730 | { | |
3731 | static int udp_warning = 0; | |
3732 | ||
3733 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3734 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3735 | serial connection is reliable and not the serial connection promising | |
3736 | to be. */ | |
3737 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3738 | { | |
3e43a32a MS |
3739 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3740 | "Some events may be lost, rendering further debugging " | |
3741 | "impossible.")); | |
9db8d71f DJ |
3742 | udp_warning = 1; |
3743 | } | |
3744 | ||
3745 | return serial_open (name); | |
3746 | } | |
3747 | ||
d914c394 SS |
3748 | /* Inform the target of our permission settings. The permission flags |
3749 | work without this, but if the target knows the settings, it can do | |
3750 | a couple things. First, it can add its own check, to catch cases | |
3751 | that somehow manage to get by the permissions checks in target | |
3752 | methods. Second, if the target is wired to disallow particular | |
3753 | settings (for instance, a system in the field that is not set up to | |
3754 | be able to stop at a breakpoint), it can object to any unavailable | |
3755 | permissions. */ | |
3756 | ||
3757 | void | |
c378d69d | 3758 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
3759 | { |
3760 | struct remote_state *rs = get_remote_state (); | |
3761 | ||
bba74b36 YQ |
3762 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3763 | "WriteReg:%x;WriteMem:%x;" | |
3764 | "InsertBreak:%x;InsertTrace:%x;" | |
3765 | "InsertFastTrace:%x;Stop:%x", | |
3766 | may_write_registers, may_write_memory, | |
3767 | may_insert_breakpoints, may_insert_tracepoints, | |
3768 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3769 | putpkt (rs->buf); |
3770 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3771 | ||
3772 | /* If the target didn't like the packet, warn the user. Do not try | |
3773 | to undo the user's settings, that would just be maddening. */ | |
3774 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3775 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3776 | } |
3777 | ||
be2a5f71 DJ |
3778 | /* This type describes each known response to the qSupported |
3779 | packet. */ | |
3780 | struct protocol_feature | |
3781 | { | |
3782 | /* The name of this protocol feature. */ | |
3783 | const char *name; | |
3784 | ||
3785 | /* The default for this protocol feature. */ | |
3786 | enum packet_support default_support; | |
3787 | ||
3788 | /* The function to call when this feature is reported, or after | |
3789 | qSupported processing if the feature is not supported. | |
3790 | The first argument points to this structure. The second | |
3791 | argument indicates whether the packet requested support be | |
3792 | enabled, disabled, or probed (or the default, if this function | |
3793 | is being called at the end of processing and this feature was | |
3794 | not reported). The third argument may be NULL; if not NULL, it | |
3795 | is a NUL-terminated string taken from the packet following | |
3796 | this feature's name and an equals sign. */ | |
3797 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3798 | const char *); | |
3799 | ||
3800 | /* The corresponding packet for this feature. Only used if | |
3801 | FUNC is remote_supported_packet. */ | |
3802 | int packet; | |
3803 | }; | |
3804 | ||
be2a5f71 DJ |
3805 | static void |
3806 | remote_supported_packet (const struct protocol_feature *feature, | |
3807 | enum packet_support support, | |
3808 | const char *argument) | |
3809 | { | |
3810 | if (argument) | |
3811 | { | |
3812 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3813 | " \"%s\"."), feature->name); | |
3814 | return; | |
3815 | } | |
3816 | ||
4082afcc | 3817 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 3818 | } |
be2a5f71 DJ |
3819 | |
3820 | static void | |
3821 | remote_packet_size (const struct protocol_feature *feature, | |
3822 | enum packet_support support, const char *value) | |
3823 | { | |
3824 | struct remote_state *rs = get_remote_state (); | |
3825 | ||
3826 | int packet_size; | |
3827 | char *value_end; | |
3828 | ||
3829 | if (support != PACKET_ENABLE) | |
3830 | return; | |
3831 | ||
3832 | if (value == NULL || *value == '\0') | |
3833 | { | |
3834 | warning (_("Remote target reported \"%s\" without a size."), | |
3835 | feature->name); | |
3836 | return; | |
3837 | } | |
3838 | ||
3839 | errno = 0; | |
3840 | packet_size = strtol (value, &value_end, 16); | |
3841 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3842 | { | |
3843 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3844 | feature->name, value); | |
3845 | return; | |
3846 | } | |
3847 | ||
3848 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3849 | { | |
3850 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3851 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3852 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3853 | } | |
3854 | ||
3855 | /* Record the new maximum packet size. */ | |
3856 | rs->explicit_packet_size = packet_size; | |
3857 | } | |
3858 | ||
dc473cfb | 3859 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3860 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3861 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3862 | PACKET_qXfer_auxv }, |
23181151 DJ |
3863 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3864 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3865 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3866 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3867 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3868 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 3869 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 3870 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 3871 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3872 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3873 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3874 | PACKET_qXfer_spu_read }, | |
3875 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3876 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3877 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3878 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3879 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3880 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3881 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3882 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3883 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3884 | PACKET_QPassSignals }, | |
9b224c5e PA |
3885 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
3886 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
3887 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3888 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
3889 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
3890 | PACKET_multiprocess_feature }, | |
3891 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
3892 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3893 | PACKET_qXfer_siginfo_read }, | |
3894 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3895 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 3896 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 3897 | PACKET_ConditionalTracepoints }, |
4082afcc | 3898 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 3899 | PACKET_ConditionalBreakpoints }, |
4082afcc | 3900 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 3901 | PACKET_BreakpointCommands }, |
4082afcc | 3902 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 3903 | PACKET_FastTracepoints }, |
4082afcc | 3904 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 3905 | PACKET_StaticTracepoints }, |
4082afcc | 3906 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 3907 | PACKET_InstallInTrace}, |
4082afcc PA |
3908 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
3909 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
3910 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3911 | PACKET_bc }, | |
3912 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3913 | PACKET_bs }, | |
409873ef SS |
3914 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3915 | PACKET_TracepointSource }, | |
d914c394 SS |
3916 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3917 | PACKET_QAllow }, | |
4082afcc PA |
3918 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
3919 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
3920 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3921 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
3922 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
3923 | PACKET_qXfer_uib }, | |
03583c20 UW |
3924 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3925 | PACKET_QDisableRandomization }, | |
d1feda86 | 3926 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
3927 | { "QTBuffer:size", PACKET_DISABLE, |
3928 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 3929 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
3930 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
3931 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
3932 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
3933 | PACKET_qXfer_btrace } | |
be2a5f71 DJ |
3934 | }; |
3935 | ||
c8d5aac9 L |
3936 | static char *remote_support_xml; |
3937 | ||
3938 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3939 | ||
3940 | void | |
6e39997a | 3941 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3942 | { |
3943 | #if defined(HAVE_LIBEXPAT) | |
3944 | if (remote_support_xml == NULL) | |
c4f7c687 | 3945 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3946 | else |
3947 | { | |
3948 | char *copy = xstrdup (remote_support_xml + 13); | |
3949 | char *p = strtok (copy, ","); | |
3950 | ||
3951 | do | |
3952 | { | |
3953 | if (strcmp (p, xml) == 0) | |
3954 | { | |
3955 | /* already there */ | |
3956 | xfree (copy); | |
3957 | return; | |
3958 | } | |
3959 | } | |
3960 | while ((p = strtok (NULL, ",")) != NULL); | |
3961 | xfree (copy); | |
3962 | ||
94b0dee1 PA |
3963 | remote_support_xml = reconcat (remote_support_xml, |
3964 | remote_support_xml, ",", xml, | |
3965 | (char *) NULL); | |
c8d5aac9 L |
3966 | } |
3967 | #endif | |
3968 | } | |
3969 | ||
3970 | static char * | |
3971 | remote_query_supported_append (char *msg, const char *append) | |
3972 | { | |
3973 | if (msg) | |
94b0dee1 | 3974 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3975 | else |
3976 | return xstrdup (append); | |
3977 | } | |
3978 | ||
be2a5f71 DJ |
3979 | static void |
3980 | remote_query_supported (void) | |
3981 | { | |
3982 | struct remote_state *rs = get_remote_state (); | |
3983 | char *next; | |
3984 | int i; | |
3985 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3986 | ||
3987 | /* The packet support flags are handled differently for this packet | |
3988 | than for most others. We treat an error, a disabled packet, and | |
3989 | an empty response identically: any features which must be reported | |
3990 | to be used will be automatically disabled. An empty buffer | |
3991 | accomplishes this, since that is also the representation for a list | |
3992 | containing no features. */ | |
3993 | ||
3994 | rs->buf[0] = 0; | |
4082afcc | 3995 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 3996 | { |
c8d5aac9 | 3997 | char *q = NULL; |
94b0dee1 | 3998 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 3999 | |
901f9912 | 4000 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4001 | |
4002 | if (remote_support_xml) | |
4003 | q = remote_query_supported_append (q, remote_support_xml); | |
4004 | ||
dde08ee1 PA |
4005 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4006 | ||
4007 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4008 | putpkt (q); | |
82f73884 | 4009 | |
94b0dee1 PA |
4010 | do_cleanups (old_chain); |
4011 | ||
be2a5f71 DJ |
4012 | getpkt (&rs->buf, &rs->buf_size, 0); |
4013 | ||
4014 | /* If an error occured, warn, but do not return - just reset the | |
4015 | buffer to empty and go on to disable features. */ | |
4016 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4017 | == PACKET_ERROR) | |
4018 | { | |
4019 | warning (_("Remote failure reply: %s"), rs->buf); | |
4020 | rs->buf[0] = 0; | |
4021 | } | |
4022 | } | |
4023 | ||
4024 | memset (seen, 0, sizeof (seen)); | |
4025 | ||
4026 | next = rs->buf; | |
4027 | while (*next) | |
4028 | { | |
4029 | enum packet_support is_supported; | |
4030 | char *p, *end, *name_end, *value; | |
4031 | ||
4032 | /* First separate out this item from the rest of the packet. If | |
4033 | there's another item after this, we overwrite the separator | |
4034 | (terminated strings are much easier to work with). */ | |
4035 | p = next; | |
4036 | end = strchr (p, ';'); | |
4037 | if (end == NULL) | |
4038 | { | |
4039 | end = p + strlen (p); | |
4040 | next = end; | |
4041 | } | |
4042 | else | |
4043 | { | |
89be2091 DJ |
4044 | *end = '\0'; |
4045 | next = end + 1; | |
4046 | ||
be2a5f71 DJ |
4047 | if (end == p) |
4048 | { | |
4049 | warning (_("empty item in \"qSupported\" response")); | |
4050 | continue; | |
4051 | } | |
be2a5f71 DJ |
4052 | } |
4053 | ||
4054 | name_end = strchr (p, '='); | |
4055 | if (name_end) | |
4056 | { | |
4057 | /* This is a name=value entry. */ | |
4058 | is_supported = PACKET_ENABLE; | |
4059 | value = name_end + 1; | |
4060 | *name_end = '\0'; | |
4061 | } | |
4062 | else | |
4063 | { | |
4064 | value = NULL; | |
4065 | switch (end[-1]) | |
4066 | { | |
4067 | case '+': | |
4068 | is_supported = PACKET_ENABLE; | |
4069 | break; | |
4070 | ||
4071 | case '-': | |
4072 | is_supported = PACKET_DISABLE; | |
4073 | break; | |
4074 | ||
4075 | case '?': | |
4076 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4077 | break; | |
4078 | ||
4079 | default: | |
3e43a32a MS |
4080 | warning (_("unrecognized item \"%s\" " |
4081 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4082 | continue; |
4083 | } | |
4084 | end[-1] = '\0'; | |
4085 | } | |
4086 | ||
4087 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4088 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4089 | { | |
4090 | const struct protocol_feature *feature; | |
4091 | ||
4092 | seen[i] = 1; | |
4093 | feature = &remote_protocol_features[i]; | |
4094 | feature->func (feature, is_supported, value); | |
4095 | break; | |
4096 | } | |
4097 | } | |
4098 | ||
4099 | /* If we increased the packet size, make sure to increase the global | |
4100 | buffer size also. We delay this until after parsing the entire | |
4101 | qSupported packet, because this is the same buffer we were | |
4102 | parsing. */ | |
4103 | if (rs->buf_size < rs->explicit_packet_size) | |
4104 | { | |
4105 | rs->buf_size = rs->explicit_packet_size; | |
4106 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4107 | } | |
4108 | ||
4109 | /* Handle the defaults for unmentioned features. */ | |
4110 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4111 | if (!seen[i]) | |
4112 | { | |
4113 | const struct protocol_feature *feature; | |
4114 | ||
4115 | feature = &remote_protocol_features[i]; | |
4116 | feature->func (feature, feature->default_support, NULL); | |
4117 | } | |
4118 | } | |
4119 | ||
78a095c3 JK |
4120 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4121 | on it so remove them first. */ | |
4122 | ||
4123 | static void | |
4124 | remote_unpush_target (void) | |
4125 | { | |
4126 | pop_all_targets_above (process_stratum - 1); | |
4127 | } | |
be2a5f71 | 4128 | |
c906108c | 4129 | static void |
3e43a32a MS |
4130 | remote_open_1 (char *name, int from_tty, |
4131 | struct target_ops *target, int extended_p) | |
c906108c | 4132 | { |
d01949b6 | 4133 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4134 | |
c906108c | 4135 | if (name == 0) |
8a3fe4f8 | 4136 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4137 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4138 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4139 | |
23860348 | 4140 | /* See FIXME above. */ |
c6ebd6cf | 4141 | if (!target_async_permitted) |
92d1e331 | 4142 | wait_forever_enabled_p = 1; |
6426a772 | 4143 | |
2d717e4f | 4144 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4145 | Ask this question first, before target_preopen has a chance to kill |
4146 | anything. */ | |
5d93a237 | 4147 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4148 | { |
78a095c3 JK |
4149 | if (from_tty |
4150 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4151 | error (_("Still connected.")); |
4152 | } | |
4153 | ||
78a095c3 | 4154 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4155 | target_preopen (from_tty); |
4156 | ||
89be2091 | 4157 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4158 | xfree (rs->last_pass_packet); |
4159 | rs->last_pass_packet = NULL; | |
89be2091 | 4160 | |
9b224c5e PA |
4161 | /* Make sure we send the program signals list the next time we |
4162 | resume. */ | |
5e4a05c4 TT |
4163 | xfree (rs->last_program_signals_packet); |
4164 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4165 | |
ad9a8f3f | 4166 | remote_fileio_reset (); |
1dd41f16 NS |
4167 | reopen_exec_file (); |
4168 | reread_symbols (); | |
4169 | ||
5d93a237 TT |
4170 | rs->remote_desc = remote_serial_open (name); |
4171 | if (!rs->remote_desc) | |
c906108c SS |
4172 | perror_with_name (name); |
4173 | ||
4174 | if (baud_rate != -1) | |
4175 | { | |
5d93a237 | 4176 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4177 | { |
9b74d5d3 KB |
4178 | /* The requested speed could not be set. Error out to |
4179 | top level after closing remote_desc. Take care to | |
4180 | set remote_desc to NULL to avoid closing remote_desc | |
4181 | more than once. */ | |
5d93a237 TT |
4182 | serial_close (rs->remote_desc); |
4183 | rs->remote_desc = NULL; | |
c906108c SS |
4184 | perror_with_name (name); |
4185 | } | |
4186 | } | |
4187 | ||
5d93a237 | 4188 | serial_raw (rs->remote_desc); |
c906108c SS |
4189 | |
4190 | /* If there is something sitting in the buffer we might take it as a | |
4191 | response to a command, which would be bad. */ | |
5d93a237 | 4192 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4193 | |
4194 | if (from_tty) | |
4195 | { | |
4196 | puts_filtered ("Remote debugging using "); | |
4197 | puts_filtered (name); | |
4198 | puts_filtered ("\n"); | |
4199 | } | |
23860348 | 4200 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4201 | |
74531fed PA |
4202 | /* Register extra event sources in the event loop. */ |
4203 | remote_async_inferior_event_token | |
4204 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4205 | NULL); | |
5965e028 | 4206 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4207 | |
be2a5f71 DJ |
4208 | /* Reset the target state; these things will be queried either by |
4209 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4210 | reset_all_packet_configs_support (); |
74531fed | 4211 | rs->cached_wait_status = 0; |
be2a5f71 | 4212 | rs->explicit_packet_size = 0; |
a6f3e723 | 4213 | rs->noack_mode = 0; |
82f73884 | 4214 | rs->extended = extended_p; |
e24a49d8 | 4215 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4216 | rs->ctrlc_pending_p = 0; |
802188a7 | 4217 | |
47f8a51d TT |
4218 | rs->general_thread = not_sent_ptid; |
4219 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4220 | rs->remote_traceframe_number = -1; |
c906108c | 4221 | |
9d1f7ab2 | 4222 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4223 | rs->use_threadinfo_query = 1; |
4224 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4225 | |
c6ebd6cf | 4226 | if (target_async_permitted) |
92d1e331 | 4227 | { |
23860348 | 4228 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4229 | remote_async_terminal_ours_p = 1; |
4230 | ||
4231 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4232 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4233 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4234 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4235 | around this. Eventually a mechanism that allows |
92d1e331 | 4236 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4237 | implemented. */ |
92d1e331 DJ |
4238 | wait_forever_enabled_p = 0; |
4239 | } | |
4240 | ||
23860348 | 4241 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4242 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4243 | |
74531fed PA |
4244 | /* Start afresh. */ |
4245 | init_thread_list (); | |
4246 | ||
36918e70 | 4247 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4248 | target (we'd otherwise be in an inconsistent state) and then |
4249 | propogate the error on up the exception chain. This ensures that | |
4250 | the caller doesn't stumble along blindly assuming that the | |
4251 | function succeeded. The CLI doesn't have this problem but other | |
4252 | UI's, such as MI do. | |
36918e70 AC |
4253 | |
4254 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4255 | this function should return an error indication letting the | |
ce2826aa | 4256 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4257 | ``target remote'' is directly wired to this function making that |
4258 | impossible. On a positive note, the CLI side of this problem has | |
4259 | been fixed - the function set_cmd_context() makes it possible for | |
4260 | all the ``target ....'' commands to share a common callback | |
4261 | function. See cli-dump.c. */ | |
109c3e39 | 4262 | { |
04bd08de | 4263 | volatile struct gdb_exception ex; |
2d717e4f | 4264 | |
04bd08de TT |
4265 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4266 | { | |
4267 | remote_start_remote (from_tty, target, extended_p); | |
4268 | } | |
109c3e39 AC |
4269 | if (ex.reason < 0) |
4270 | { | |
c8d104ad PA |
4271 | /* Pop the partially set up target - unless something else did |
4272 | already before throwing the exception. */ | |
5d93a237 | 4273 | if (rs->remote_desc != NULL) |
78a095c3 | 4274 | remote_unpush_target (); |
c6ebd6cf | 4275 | if (target_async_permitted) |
109c3e39 AC |
4276 | wait_forever_enabled_p = 1; |
4277 | throw_exception (ex); | |
4278 | } | |
4279 | } | |
c906108c | 4280 | |
c6ebd6cf | 4281 | if (target_async_permitted) |
92d1e331 | 4282 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4283 | } |
4284 | ||
c906108c SS |
4285 | /* This takes a program previously attached to and detaches it. After |
4286 | this is done, GDB can be used to debug some other program. We | |
4287 | better not have left any breakpoints in the target program or it'll | |
4288 | die when it hits one. */ | |
4289 | ||
4290 | static void | |
52554a0e | 4291 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4292 | { |
82f73884 | 4293 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4294 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4295 | |
4296 | if (args) | |
8a3fe4f8 | 4297 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4298 | |
2d717e4f DJ |
4299 | if (!target_has_execution) |
4300 | error (_("No process to detach from.")); | |
4301 | ||
7cee1e54 PA |
4302 | if (from_tty) |
4303 | { | |
4304 | char *exec_file = get_exec_file (0); | |
4305 | if (exec_file == NULL) | |
4306 | exec_file = ""; | |
4307 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4308 | target_pid_to_str (pid_to_ptid (pid))); | |
4309 | gdb_flush (gdb_stdout); | |
4310 | } | |
4311 | ||
c906108c | 4312 | /* Tell the remote target to detach. */ |
82f73884 | 4313 | if (remote_multi_process_p (rs)) |
bba74b36 | 4314 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4315 | else |
4316 | strcpy (rs->buf, "D"); | |
4317 | ||
4ddda9b5 PA |
4318 | putpkt (rs->buf); |
4319 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4320 | ||
82f73884 PA |
4321 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4322 | ; | |
4323 | else if (rs->buf[0] == '\0') | |
4324 | error (_("Remote doesn't know how to detach")); | |
4325 | else | |
4ddda9b5 | 4326 | error (_("Can't detach process.")); |
c906108c | 4327 | |
7cee1e54 PA |
4328 | if (from_tty && !extended) |
4329 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4330 | |
82f73884 | 4331 | target_mourn_inferior (); |
2d717e4f DJ |
4332 | } |
4333 | ||
4334 | static void | |
52554a0e | 4335 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4336 | { |
4337 | remote_detach_1 (args, from_tty, 0); | |
4338 | } | |
4339 | ||
4340 | static void | |
52554a0e | 4341 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4342 | { |
4343 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4344 | } |
4345 | ||
6ad8ae5c DJ |
4346 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4347 | ||
43ff13b4 | 4348 | static void |
597320e7 | 4349 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4350 | { |
43ff13b4 | 4351 | if (args) |
2d717e4f | 4352 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4353 | |
2d717e4f DJ |
4354 | /* Make sure we unpush even the extended remote targets; mourn |
4355 | won't do it. So call remote_mourn_1 directly instead of | |
4356 | target_mourn_inferior. */ | |
4357 | remote_mourn_1 (target); | |
4358 | ||
43ff13b4 JM |
4359 | if (from_tty) |
4360 | puts_filtered ("Ending remote debugging.\n"); | |
4361 | } | |
4362 | ||
2d717e4f DJ |
4363 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4364 | be chatty about it. */ | |
4365 | ||
4366 | static void | |
4367 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4368 | { | |
4369 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4370 | int pid; |
96ef3384 | 4371 | char *wait_status = NULL; |
2d717e4f | 4372 | |
74164c56 | 4373 | pid = parse_pid_to_attach (args); |
2d717e4f | 4374 | |
74164c56 JK |
4375 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4376 | way as in other targets. */ | |
2d717e4f | 4377 | |
4082afcc | 4378 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4379 | error (_("This target does not support attaching to a process")); |
4380 | ||
7cee1e54 PA |
4381 | if (from_tty) |
4382 | { | |
4383 | char *exec_file = get_exec_file (0); | |
4384 | ||
4385 | if (exec_file) | |
4386 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4387 | target_pid_to_str (pid_to_ptid (pid))); | |
4388 | else | |
4389 | printf_unfiltered (_("Attaching to %s\n"), | |
4390 | target_pid_to_str (pid_to_ptid (pid))); | |
4391 | ||
4392 | gdb_flush (gdb_stdout); | |
4393 | } | |
4394 | ||
bba74b36 | 4395 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4396 | putpkt (rs->buf); |
4397 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4398 | ||
4082afcc PA |
4399 | switch (packet_ok (rs->buf, |
4400 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4401 | { |
4082afcc | 4402 | case PACKET_OK: |
74531fed PA |
4403 | if (!non_stop) |
4404 | { | |
4405 | /* Save the reply for later. */ | |
4406 | wait_status = alloca (strlen (rs->buf) + 1); | |
4407 | strcpy (wait_status, rs->buf); | |
4408 | } | |
4409 | else if (strcmp (rs->buf, "OK") != 0) | |
4410 | error (_("Attaching to %s failed with: %s"), | |
4411 | target_pid_to_str (pid_to_ptid (pid)), | |
4412 | rs->buf); | |
4082afcc PA |
4413 | break; |
4414 | case PACKET_UNKNOWN: | |
4415 | error (_("This target does not support attaching to a process")); | |
4416 | default: | |
4417 | error (_("Attaching to %s failed"), | |
4418 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4419 | } |
2d717e4f | 4420 | |
49c62f2e | 4421 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4422 | |
2d717e4f | 4423 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4424 | |
bad34192 PA |
4425 | if (non_stop) |
4426 | { | |
4427 | struct thread_info *thread; | |
79d7f229 | 4428 | |
bad34192 PA |
4429 | /* Get list of threads. */ |
4430 | remote_threads_info (target); | |
82f73884 | 4431 | |
bad34192 PA |
4432 | thread = first_thread_of_process (pid); |
4433 | if (thread) | |
4434 | inferior_ptid = thread->ptid; | |
4435 | else | |
4436 | inferior_ptid = pid_to_ptid (pid); | |
4437 | ||
4438 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4439 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4440 | } |
74531fed | 4441 | else |
bad34192 PA |
4442 | { |
4443 | /* Now, if we have thread information, update inferior_ptid. */ | |
4444 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4445 | ||
4446 | /* Add the main thread to the thread list. */ | |
4447 | add_thread_silent (inferior_ptid); | |
4448 | } | |
c0a2216e | 4449 | |
96ef3384 UW |
4450 | /* Next, if the target can specify a description, read it. We do |
4451 | this before anything involving memory or registers. */ | |
4452 | target_find_description (); | |
4453 | ||
74531fed PA |
4454 | if (!non_stop) |
4455 | { | |
4456 | /* Use the previously fetched status. */ | |
4457 | gdb_assert (wait_status != NULL); | |
4458 | ||
4459 | if (target_can_async_p ()) | |
4460 | { | |
722247f1 YQ |
4461 | struct notif_event *reply |
4462 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4463 | |
722247f1 | 4464 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4465 | |
4466 | target_async (inferior_event_handler, 0); | |
4467 | } | |
4468 | else | |
4469 | { | |
4470 | gdb_assert (wait_status != NULL); | |
4471 | strcpy (rs->buf, wait_status); | |
4472 | rs->cached_wait_status = 1; | |
4473 | } | |
4474 | } | |
4475 | else | |
4476 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4477 | } |
4478 | ||
4479 | static void | |
136d6dae | 4480 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4481 | { |
136d6dae | 4482 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4483 | } |
4484 | ||
c906108c | 4485 | \f |
506fb367 DJ |
4486 | /* Check for the availability of vCont. This function should also check |
4487 | the response. */ | |
c906108c SS |
4488 | |
4489 | static void | |
6d820c5c | 4490 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4491 | { |
2e9f7625 | 4492 | char *buf; |
6d820c5c | 4493 | |
2e9f7625 DJ |
4494 | strcpy (rs->buf, "vCont?"); |
4495 | putpkt (rs->buf); | |
6d820c5c | 4496 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4497 | buf = rs->buf; |
c906108c | 4498 | |
506fb367 DJ |
4499 | /* Make sure that the features we assume are supported. */ |
4500 | if (strncmp (buf, "vCont", 5) == 0) | |
4501 | { | |
4502 | char *p = &buf[5]; | |
4503 | int support_s, support_S, support_c, support_C; | |
4504 | ||
4505 | support_s = 0; | |
4506 | support_S = 0; | |
4507 | support_c = 0; | |
4508 | support_C = 0; | |
d458bd84 | 4509 | rs->supports_vCont.t = 0; |
c1e36e3e | 4510 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4511 | while (p && *p == ';') |
4512 | { | |
4513 | p++; | |
4514 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4515 | support_s = 1; | |
4516 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4517 | support_S = 1; | |
4518 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4519 | support_c = 1; | |
4520 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4521 | support_C = 1; | |
74531fed | 4522 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4523 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4524 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4525 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4526 | |
4527 | p = strchr (p, ';'); | |
4528 | } | |
c906108c | 4529 | |
506fb367 DJ |
4530 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4531 | BUF will make packet_ok disable the packet. */ | |
4532 | if (!support_s || !support_S || !support_c || !support_C) | |
4533 | buf[0] = 0; | |
4534 | } | |
c906108c | 4535 | |
444abaca | 4536 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4537 | } |
c906108c | 4538 | |
0d8f58ca PA |
4539 | /* Helper function for building "vCont" resumptions. Write a |
4540 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4541 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4542 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4543 | resumed thread should be single-stepped and/or signalled. If PTID | |
4544 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4545 | represents a process, then all threads of the process are resumed; | |
4546 | the thread to be stepped and/or signalled is given in the global | |
4547 | INFERIOR_PTID. */ | |
4548 | ||
4549 | static char * | |
4550 | append_resumption (char *p, char *endp, | |
2ea28649 | 4551 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4552 | { |
4553 | struct remote_state *rs = get_remote_state (); | |
4554 | ||
a493e3e2 | 4555 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4556 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4557 | else if (step |
4558 | /* GDB is willing to range step. */ | |
4559 | && use_range_stepping | |
4560 | /* Target supports range stepping. */ | |
4561 | && rs->supports_vCont.r | |
4562 | /* We don't currently support range stepping multiple | |
4563 | threads with a wildcard (though the protocol allows it, | |
4564 | so stubs shouldn't make an active effort to forbid | |
4565 | it). */ | |
4566 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4567 | { | |
4568 | struct thread_info *tp; | |
4569 | ||
4570 | if (ptid_equal (ptid, minus_one_ptid)) | |
4571 | { | |
4572 | /* If we don't know about the target thread's tid, then | |
4573 | we're resuming magic_null_ptid (see caller). */ | |
4574 | tp = find_thread_ptid (magic_null_ptid); | |
4575 | } | |
4576 | else | |
4577 | tp = find_thread_ptid (ptid); | |
4578 | gdb_assert (tp != NULL); | |
4579 | ||
4580 | if (tp->control.may_range_step) | |
4581 | { | |
4582 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4583 | ||
4584 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4585 | phex_nz (tp->control.step_range_start, | |
4586 | addr_size), | |
4587 | phex_nz (tp->control.step_range_end, | |
4588 | addr_size)); | |
4589 | } | |
4590 | else | |
4591 | p += xsnprintf (p, endp - p, ";s"); | |
4592 | } | |
0d8f58ca PA |
4593 | else if (step) |
4594 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4595 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4596 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4597 | else | |
4598 | p += xsnprintf (p, endp - p, ";c"); | |
4599 | ||
4600 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4601 | { | |
4602 | ptid_t nptid; | |
4603 | ||
4604 | /* All (-1) threads of process. */ | |
ba348170 | 4605 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
4606 | |
4607 | p += xsnprintf (p, endp - p, ":"); | |
4608 | p = write_ptid (p, endp, nptid); | |
4609 | } | |
4610 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4611 | { | |
4612 | p += xsnprintf (p, endp - p, ":"); | |
4613 | p = write_ptid (p, endp, ptid); | |
4614 | } | |
4615 | ||
4616 | return p; | |
4617 | } | |
4618 | ||
e5ef252a PA |
4619 | /* Append a vCont continue-with-signal action for threads that have a |
4620 | non-zero stop signal. */ | |
4621 | ||
4622 | static char * | |
4623 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4624 | { | |
4625 | struct thread_info *thread; | |
4626 | ||
4627 | ALL_THREADS (thread) | |
4628 | if (ptid_match (thread->ptid, ptid) | |
4629 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4630 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4631 | && signal_pass_state (thread->suspend.stop_signal)) | |
4632 | { | |
4633 | p = append_resumption (p, endp, thread->ptid, | |
4634 | 0, thread->suspend.stop_signal); | |
4635 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4636 | } | |
4637 | ||
4638 | return p; | |
4639 | } | |
4640 | ||
506fb367 DJ |
4641 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4642 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4643 | resumed thread should be single-stepped and/or signalled. If PTID |
4644 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4645 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4646 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4647 | |
506fb367 DJ |
4648 | This function issues a strict subset of all possible vCont commands at the |
4649 | moment. */ | |
44eaed12 | 4650 | |
506fb367 | 4651 | static int |
2ea28649 | 4652 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4653 | { |
4654 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4655 | char *p; |
4656 | char *endp; | |
44eaed12 | 4657 | |
4082afcc | 4658 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4659 | remote_vcont_probe (rs); |
44eaed12 | 4660 | |
4082afcc | 4661 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 4662 | return 0; |
44eaed12 | 4663 | |
82f73884 PA |
4664 | p = rs->buf; |
4665 | endp = rs->buf + get_remote_packet_size (); | |
4666 | ||
506fb367 DJ |
4667 | /* If we could generate a wider range of packets, we'd have to worry |
4668 | about overflowing BUF. Should there be a generic | |
4669 | "multi-part-packet" packet? */ | |
4670 | ||
0d8f58ca PA |
4671 | p += xsnprintf (p, endp - p, "vCont"); |
4672 | ||
79d7f229 | 4673 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4674 | { |
79d7f229 PA |
4675 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4676 | so we don't have any TID numbers the inferior will | |
4677 | understand. Make sure to only send forms that do not specify | |
4678 | a TID. */ | |
a9cbf802 | 4679 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4680 | } |
0d8f58ca | 4681 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4682 | { |
0d8f58ca PA |
4683 | /* Resume all threads (of all processes, or of a single |
4684 | process), with preference for INFERIOR_PTID. This assumes | |
4685 | inferior_ptid belongs to the set of all threads we are about | |
4686 | to resume. */ | |
a493e3e2 | 4687 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4688 | { |
0d8f58ca PA |
4689 | /* Step inferior_ptid, with or without signal. */ |
4690 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4691 | } |
0d8f58ca | 4692 | |
e5ef252a PA |
4693 | /* Also pass down any pending signaled resumption for other |
4694 | threads not the current. */ | |
4695 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4696 | ||
0d8f58ca | 4697 | /* And continue others without a signal. */ |
a493e3e2 | 4698 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4699 | } |
4700 | else | |
506fb367 DJ |
4701 | { |
4702 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4703 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4704 | } |
c906108c | 4705 | |
82f73884 PA |
4706 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4707 | putpkt (rs->buf); | |
506fb367 | 4708 | |
74531fed PA |
4709 | if (non_stop) |
4710 | { | |
4711 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4712 | reply will be reported asynchronously by means of a `%Stop' | |
4713 | notification. */ | |
4714 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4715 | if (strcmp (rs->buf, "OK") != 0) | |
4716 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4717 | } | |
4718 | ||
506fb367 | 4719 | return 1; |
c906108c | 4720 | } |
43ff13b4 | 4721 | |
506fb367 DJ |
4722 | /* Tell the remote machine to resume. */ |
4723 | ||
43ff13b4 | 4724 | static void |
28439f5e | 4725 | remote_resume (struct target_ops *ops, |
2ea28649 | 4726 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4727 | { |
d01949b6 | 4728 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4729 | char *buf; |
43ff13b4 | 4730 | |
722247f1 YQ |
4731 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4732 | (explained in remote-notif.c:handle_notification) so | |
4733 | remote_notif_process is not called. We need find a place where | |
4734 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4735 | before resuming inferior, because inferior was stopped and no RSP | |
4736 | traffic at that moment. */ | |
4737 | if (!non_stop) | |
5965e028 | 4738 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4739 | |
b73be471 | 4740 | rs->last_sent_signal = siggnal; |
280ceea3 | 4741 | rs->last_sent_step = step; |
43ff13b4 | 4742 | |
506fb367 | 4743 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4744 | /* No reverse support (yet) for vCont. */ |
4745 | if (execution_direction != EXEC_REVERSE) | |
4746 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4747 | goto done; | |
506fb367 | 4748 | |
79d7f229 PA |
4749 | /* All other supported resume packets do use Hc, so set the continue |
4750 | thread. */ | |
4751 | if (ptid_equal (ptid, minus_one_ptid)) | |
4752 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4753 | else |
79d7f229 | 4754 | set_continue_thread (ptid); |
506fb367 | 4755 | |
2e9f7625 | 4756 | buf = rs->buf; |
b2175913 MS |
4757 | if (execution_direction == EXEC_REVERSE) |
4758 | { | |
4759 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4760 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4761 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4762 | siggnal); |
40ab02ce | 4763 | |
4082afcc | 4764 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 4765 | error (_("Remote reverse-step not supported.")); |
4082afcc | 4766 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 4767 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4768 | |
b2175913 MS |
4769 | strcpy (buf, step ? "bs" : "bc"); |
4770 | } | |
a493e3e2 | 4771 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4772 | { |
4773 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4774 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4775 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4776 | buf[3] = '\0'; |
4777 | } | |
4778 | else | |
c5aa993b | 4779 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4780 | |
44eaed12 | 4781 | putpkt (buf); |
43ff13b4 | 4782 | |
75c99385 | 4783 | done: |
2acceee2 | 4784 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4785 | with the event loop. NOTE: this is the one place where all the |
4786 | execution commands end up. We could alternatively do this in each | |
23860348 | 4787 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4788 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4789 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4790 | NOT asynchronously. */ |
362646f5 | 4791 | if (target_can_async_p ()) |
2acceee2 | 4792 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4793 | |
4794 | /* We've just told the target to resume. The remote server will | |
4795 | wait for the inferior to stop, and then send a stop reply. In | |
4796 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4797 | because the stub wouldn't be ready to process it. This applies |
4798 | only to the base all-stop protocol, however. In non-stop (which | |
4799 | only supports vCont), the stub replies with an "OK", and is | |
4800 | immediate able to process further serial input. */ | |
4801 | if (!non_stop) | |
4802 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4803 | } |
c906108c | 4804 | \f |
43ff13b4 JM |
4805 | |
4806 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4807 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4808 | static void |
934b9bac | 4809 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 4810 | { |
934b9bac | 4811 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
4812 | } |
4813 | ||
23860348 | 4814 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4815 | static void |
934b9bac | 4816 | async_handle_remote_sigint (int sig) |
43ff13b4 | 4817 | { |
934b9bac JK |
4818 | signal (sig, async_handle_remote_sigint_twice); |
4819 | mark_async_signal_handler (async_sigint_remote_token); | |
43ff13b4 JM |
4820 | } |
4821 | ||
4822 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4823 | sent once. It will take effect the second time that the user sends | |
23860348 | 4824 | a ^C. */ |
43ff13b4 | 4825 | static void |
934b9bac | 4826 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 4827 | { |
934b9bac JK |
4828 | signal (sig, async_handle_remote_sigint); |
4829 | mark_async_signal_handler (async_sigint_remote_twice_token); | |
43ff13b4 JM |
4830 | } |
4831 | ||
6426a772 | 4832 | /* Perform the real interruption of the target execution, in response |
23860348 | 4833 | to a ^C. */ |
c5aa993b | 4834 | static void |
fba45db2 | 4835 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4836 | { |
4837 | if (remote_debug) | |
248fd3bf | 4838 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4839 | |
94cc34af | 4840 | target_stop (inferior_ptid); |
43ff13b4 JM |
4841 | } |
4842 | ||
0df8b418 | 4843 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4844 | up on the target alltogether. */ |
47e1ce27 | 4845 | static void |
fba45db2 | 4846 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4847 | { |
2df3850c | 4848 | if (remote_debug) |
248fd3bf | 4849 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4850 | |
4851 | interrupt_query (); | |
43ff13b4 JM |
4852 | } |
4853 | ||
4854 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4855 | stopped. */ |
6426a772 | 4856 | static void |
934b9bac | 4857 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
4858 | { |
4859 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4860 | } |
4861 | ||
c906108c SS |
4862 | /* Send ^C to target to halt it. Target will respond, and send us a |
4863 | packet. */ | |
507f3c78 | 4864 | static void (*ofunc) (int); |
c906108c | 4865 | |
0df8b418 MS |
4866 | /* The command line interface's stop routine. This function is installed |
4867 | as a signal handler for SIGINT. The first time a user requests a | |
4868 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4869 | response from the target (it didn't stop when the user requested it), |
23860348 | 4870 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4871 | static void |
934b9bac | 4872 | sync_remote_interrupt (int signo) |
c906108c | 4873 | { |
23860348 | 4874 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 4875 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 4876 | |
934b9bac | 4877 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
4878 | } |
4879 | ||
4880 | /* The user typed ^C twice. */ | |
4881 | ||
4882 | static void | |
934b9bac | 4883 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
4884 | { |
4885 | signal (signo, ofunc); | |
934b9bac JK |
4886 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
4887 | signal (signo, sync_remote_interrupt); | |
c906108c | 4888 | } |
7a292a7a | 4889 | |
74531fed PA |
4890 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4891 | thread, all threads of a remote process, or all threads of all | |
4892 | processes. */ | |
4893 | ||
4894 | static void | |
4895 | remote_stop_ns (ptid_t ptid) | |
4896 | { | |
4897 | struct remote_state *rs = get_remote_state (); | |
4898 | char *p = rs->buf; | |
4899 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 4900 | |
4082afcc | 4901 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
4902 | remote_vcont_probe (rs); |
4903 | ||
d458bd84 | 4904 | if (!rs->supports_vCont.t) |
74531fed PA |
4905 | error (_("Remote server does not support stopping threads")); |
4906 | ||
f91d3df5 PA |
4907 | if (ptid_equal (ptid, minus_one_ptid) |
4908 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4909 | p += xsnprintf (p, endp - p, "vCont;t"); |
4910 | else | |
4911 | { | |
4912 | ptid_t nptid; | |
4913 | ||
74531fed PA |
4914 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4915 | ||
4916 | if (ptid_is_pid (ptid)) | |
4917 | /* All (-1) threads of process. */ | |
ba348170 | 4918 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
4919 | else |
4920 | { | |
4921 | /* Small optimization: if we already have a stop reply for | |
4922 | this thread, no use in telling the stub we want this | |
4923 | stopped. */ | |
4924 | if (peek_stop_reply (ptid)) | |
4925 | return; | |
4926 | ||
4927 | nptid = ptid; | |
4928 | } | |
4929 | ||
a9cbf802 | 4930 | write_ptid (p, endp, nptid); |
74531fed PA |
4931 | } |
4932 | ||
4933 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4934 | come in asynchronously by notification. */ | |
4935 | putpkt (rs->buf); | |
4936 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4937 | if (strcmp (rs->buf, "OK") != 0) | |
4938 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4939 | } | |
4940 | ||
4941 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4942 | remote target. It is undefined which thread of which process | |
4943 | reports the stop. */ | |
4944 | ||
4945 | static void | |
4946 | remote_stop_as (ptid_t ptid) | |
4947 | { | |
4948 | struct remote_state *rs = get_remote_state (); | |
4949 | ||
3a29589a DJ |
4950 | rs->ctrlc_pending_p = 1; |
4951 | ||
74531fed PA |
4952 | /* If the inferior is stopped already, but the core didn't know |
4953 | about it yet, just ignore the request. The cached wait status | |
4954 | will be collected in remote_wait. */ | |
4955 | if (rs->cached_wait_status) | |
4956 | return; | |
4957 | ||
9a7071a8 JB |
4958 | /* Send interrupt_sequence to remote target. */ |
4959 | send_interrupt_sequence (); | |
74531fed PA |
4960 | } |
4961 | ||
0df8b418 | 4962 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4963 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4964 | will eventually end up here. */ |
74531fed | 4965 | |
c906108c | 4966 | static void |
1eab8a48 | 4967 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 4968 | { |
7a292a7a | 4969 | if (remote_debug) |
0f71a2f6 | 4970 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4971 | |
74531fed PA |
4972 | if (non_stop) |
4973 | remote_stop_ns (ptid); | |
c906108c | 4974 | else |
74531fed | 4975 | remote_stop_as (ptid); |
c906108c SS |
4976 | } |
4977 | ||
4978 | /* Ask the user what to do when an interrupt is received. */ | |
4979 | ||
4980 | static void | |
fba45db2 | 4981 | interrupt_query (void) |
c906108c SS |
4982 | { |
4983 | target_terminal_ours (); | |
4984 | ||
74531fed | 4985 | if (target_can_async_p ()) |
c906108c | 4986 | { |
74531fed | 4987 | signal (SIGINT, handle_sigint); |
039e3c22 | 4988 | quit (); |
c906108c | 4989 | } |
74531fed PA |
4990 | else |
4991 | { | |
9e2f0ad4 HZ |
4992 | if (query (_("Interrupted while waiting for the program.\n\ |
4993 | Give up (and stop debugging it)? "))) | |
74531fed | 4994 | { |
78a095c3 | 4995 | remote_unpush_target (); |
039e3c22 | 4996 | quit (); |
74531fed PA |
4997 | } |
4998 | } | |
c906108c SS |
4999 | |
5000 | target_terminal_inferior (); | |
5001 | } | |
5002 | ||
6426a772 JM |
5003 | /* Enable/disable target terminal ownership. Most targets can use |
5004 | terminal groups to control terminal ownership. Remote targets are | |
5005 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5006 | is required. */ |
6426a772 JM |
5007 | |
5008 | static void | |
d2f640d4 | 5009 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5010 | { |
c6ebd6cf | 5011 | if (!target_async_permitted) |
75c99385 PA |
5012 | /* Nothing to do. */ |
5013 | return; | |
5014 | ||
d9d2d8b6 PA |
5015 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5016 | idempotent. The event-loop GDB talking to an asynchronous target | |
5017 | with a synchronous command calls this function from both | |
5018 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5019 | transfer the terminal to the target when it shouldn't this guard | |
5020 | can go away. */ | |
6426a772 JM |
5021 | if (!remote_async_terminal_ours_p) |
5022 | return; | |
5023 | delete_file_handler (input_fd); | |
5024 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5025 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5026 | /* NOTE: At this point we could also register our selves as the |
5027 | recipient of all input. Any characters typed could then be | |
23860348 | 5028 | passed on down to the target. */ |
6426a772 JM |
5029 | } |
5030 | ||
5031 | static void | |
e3594fd1 | 5032 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5033 | { |
c6ebd6cf | 5034 | if (!target_async_permitted) |
75c99385 PA |
5035 | /* Nothing to do. */ |
5036 | return; | |
5037 | ||
5038 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5039 | if (remote_async_terminal_ours_p) |
5040 | return; | |
934b9bac | 5041 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5042 | add_file_handler (input_fd, stdin_event_handler, 0); |
5043 | remote_async_terminal_ours_p = 1; | |
5044 | } | |
5045 | ||
176a6961 | 5046 | static void |
917317f4 | 5047 | remote_console_output (char *msg) |
c906108c SS |
5048 | { |
5049 | char *p; | |
5050 | ||
c5aa993b | 5051 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5052 | { |
5053 | char tb[2]; | |
5054 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5055 | |
c906108c SS |
5056 | tb[0] = c; |
5057 | tb[1] = 0; | |
43ff13b4 | 5058 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5059 | } |
00db5b94 PA |
5060 | gdb_flush (gdb_stdtarg); |
5061 | } | |
74531fed PA |
5062 | |
5063 | typedef struct cached_reg | |
5064 | { | |
5065 | int num; | |
5066 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5067 | } cached_reg_t; | |
5068 | ||
5069 | DEF_VEC_O(cached_reg_t); | |
5070 | ||
722247f1 | 5071 | typedef struct stop_reply |
74531fed | 5072 | { |
722247f1 | 5073 | struct notif_event base; |
74531fed | 5074 | |
722247f1 | 5075 | /* The identifier of the thread about this event */ |
74531fed PA |
5076 | ptid_t ptid; |
5077 | ||
340e3c99 | 5078 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5079 | connection, represented by a remote_state object, is closed, |
5080 | all the associated stop_reply events should be released. */ | |
5081 | struct remote_state *rs; | |
5082 | ||
74531fed PA |
5083 | struct target_waitstatus ws; |
5084 | ||
15148d6a PA |
5085 | /* Expedited registers. This makes remote debugging a bit more |
5086 | efficient for those targets that provide critical registers as | |
5087 | part of their normal status mechanism (as another roundtrip to | |
5088 | fetch them is avoided). */ | |
74531fed PA |
5089 | VEC(cached_reg_t) *regcache; |
5090 | ||
5091 | int stopped_by_watchpoint_p; | |
5092 | CORE_ADDR watch_data_address; | |
5093 | ||
dc146f7c | 5094 | int core; |
722247f1 | 5095 | } *stop_reply_p; |
a744cf53 | 5096 | |
722247f1 YQ |
5097 | DECLARE_QUEUE_P (stop_reply_p); |
5098 | DEFINE_QUEUE_P (stop_reply_p); | |
5099 | /* The list of already fetched and acknowledged stop events. This | |
5100 | queue is used for notification Stop, and other notifications | |
5101 | don't need queue for their events, because the notification events | |
5102 | of Stop can't be consumed immediately, so that events should be | |
5103 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5104 | time. Other notifications can consume their events immediately, | |
5105 | so queue is not needed for them. */ | |
5106 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5107 | |
5108 | static void | |
5109 | stop_reply_xfree (struct stop_reply *r) | |
5110 | { | |
f48ff2a7 | 5111 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5112 | } |
5113 | ||
722247f1 YQ |
5114 | static void |
5115 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5116 | struct notif_event *event) | |
5117 | { | |
5118 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5119 | } | |
5120 | ||
5121 | static void | |
5122 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5123 | struct notif_event *event) | |
5124 | { | |
5125 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5126 | ||
5127 | /* acknowledge */ | |
5128 | putpkt ((char *) self->ack_command); | |
5129 | ||
5130 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5131 | /* We got an unknown stop reply. */ | |
5132 | error (_("Unknown stop reply")); | |
5133 | ||
5134 | push_stop_reply (stop_reply); | |
5135 | } | |
5136 | ||
5137 | static int | |
5138 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5139 | { | |
5140 | /* We can't get pending events in remote_notif_process for | |
5141 | notification stop, and we have to do this in remote_wait_ns | |
5142 | instead. If we fetch all queued events from stub, remote stub | |
5143 | may exit and we have no chance to process them back in | |
5144 | remote_wait_ns. */ | |
5145 | mark_async_event_handler (remote_async_inferior_event_token); | |
5146 | return 0; | |
5147 | } | |
5148 | ||
5149 | static void | |
5150 | stop_reply_dtr (struct notif_event *event) | |
5151 | { | |
5152 | struct stop_reply *r = (struct stop_reply *) event; | |
5153 | ||
5154 | VEC_free (cached_reg_t, r->regcache); | |
5155 | } | |
5156 | ||
5157 | static struct notif_event * | |
5158 | remote_notif_stop_alloc_reply (void) | |
5159 | { | |
5160 | struct notif_event *r | |
70ba0933 | 5161 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5162 | |
5163 | r->dtr = stop_reply_dtr; | |
5164 | ||
5165 | return r; | |
5166 | } | |
5167 | ||
5168 | /* A client of notification Stop. */ | |
5169 | ||
5170 | struct notif_client notif_client_stop = | |
5171 | { | |
5172 | "Stop", | |
5173 | "vStopped", | |
5174 | remote_notif_stop_parse, | |
5175 | remote_notif_stop_ack, | |
5176 | remote_notif_stop_can_get_pending_events, | |
5177 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5178 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5179 | }; |
5180 | ||
5181 | /* A parameter to pass data in and out. */ | |
5182 | ||
5183 | struct queue_iter_param | |
5184 | { | |
5185 | void *input; | |
5186 | struct stop_reply *output; | |
5187 | }; | |
5188 | ||
f48ff2a7 YQ |
5189 | /* Remove stop replies in the queue if its pid is equal to the given |
5190 | inferior's pid. */ | |
722247f1 YQ |
5191 | |
5192 | static int | |
f48ff2a7 YQ |
5193 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5194 | QUEUE_ITER (stop_reply_p) *iter, | |
5195 | stop_reply_p event, | |
5196 | void *data) | |
722247f1 YQ |
5197 | { |
5198 | struct queue_iter_param *param = data; | |
5199 | struct inferior *inf = param->input; | |
5200 | ||
f48ff2a7 | 5201 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5202 | { |
5203 | stop_reply_xfree (event); | |
5204 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5205 | } | |
5206 | ||
5207 | return 1; | |
5208 | } | |
5209 | ||
f48ff2a7 | 5210 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5211 | |
74531fed | 5212 | static void |
5f4cf0bb | 5213 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5214 | { |
722247f1 YQ |
5215 | int i; |
5216 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5217 | struct stop_reply *reply; |
5218 | struct remote_state *rs = get_remote_state (); | |
5219 | struct remote_notif_state *rns = rs->notif_state; | |
5220 | ||
5221 | /* This function can be notified when an inferior exists. When the | |
5222 | target is not remote, the notification state is NULL. */ | |
5223 | if (rs->remote_desc == NULL) | |
5224 | return; | |
5225 | ||
5226 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5227 | |
74531fed | 5228 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5229 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5230 | { |
722247f1 | 5231 | stop_reply_xfree (reply); |
f48ff2a7 | 5232 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5233 | } |
c906108c | 5234 | |
722247f1 YQ |
5235 | param.input = inf; |
5236 | param.output = NULL; | |
74531fed PA |
5237 | /* Discard the stop replies we have already pulled with |
5238 | vStopped. */ | |
722247f1 | 5239 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5240 | remove_stop_reply_for_inferior, ¶m); |
5241 | } | |
5242 | ||
bcc75809 YQ |
5243 | /* If its remote state is equal to the given remote state, |
5244 | remove EVENT from the stop reply queue. */ | |
5245 | ||
5246 | static int | |
5247 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5248 | QUEUE_ITER (stop_reply_p) *iter, | |
5249 | stop_reply_p event, | |
5250 | void *data) | |
5251 | { | |
5252 | struct queue_iter_param *param = data; | |
5253 | struct remote_state *rs = param->input; | |
5254 | ||
5255 | if (event->rs == rs) | |
5256 | { | |
5257 | stop_reply_xfree (event); | |
5258 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5259 | } | |
5260 | ||
5261 | return 1; | |
5262 | } | |
5263 | ||
5264 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5265 | |
5266 | static void | |
bcc75809 | 5267 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5268 | { |
5269 | struct queue_iter_param param; | |
5270 | ||
bcc75809 | 5271 | param.input = rs; |
f48ff2a7 YQ |
5272 | param.output = NULL; |
5273 | /* Discard the stop replies we have already pulled with | |
5274 | vStopped. */ | |
5275 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5276 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5277 | } |
74531fed | 5278 | |
722247f1 YQ |
5279 | /* A parameter to pass data in and out. */ |
5280 | ||
5281 | static int | |
5282 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5283 | QUEUE_ITER (stop_reply_p) *iter, | |
5284 | stop_reply_p event, | |
5285 | void *data) | |
5286 | { | |
5287 | struct queue_iter_param *param = data; | |
5288 | ptid_t *ptid = param->input; | |
5289 | ||
5290 | if (ptid_match (event->ptid, *ptid)) | |
5291 | { | |
5292 | param->output = event; | |
5293 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5294 | return 0; | |
c8e38a49 | 5295 | } |
722247f1 YQ |
5296 | |
5297 | return 1; | |
74531fed | 5298 | } |
43ff13b4 | 5299 | |
722247f1 YQ |
5300 | /* Remove the first reply in 'stop_reply_queue' which matches |
5301 | PTID. */ | |
2e9f7625 | 5302 | |
722247f1 YQ |
5303 | static struct stop_reply * |
5304 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5305 | { |
722247f1 YQ |
5306 | struct queue_iter_param param; |
5307 | ||
5308 | param.input = &ptid; | |
5309 | param.output = NULL; | |
5310 | ||
5311 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5312 | remote_notif_remove_once_on_match, ¶m); | |
5313 | if (notif_debug) | |
5314 | fprintf_unfiltered (gdb_stdlog, | |
5315 | "notif: discard queued event: 'Stop' in %s\n", | |
5316 | target_pid_to_str (ptid)); | |
a744cf53 | 5317 | |
722247f1 | 5318 | return param.output; |
74531fed | 5319 | } |
75c99385 | 5320 | |
74531fed PA |
5321 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5322 | remove it from the queue, and return it. Returns NULL if none is | |
5323 | found. If there are still queued events left to process, tell the | |
5324 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5325 | |
74531fed PA |
5326 | static struct stop_reply * |
5327 | queued_stop_reply (ptid_t ptid) | |
5328 | { | |
722247f1 | 5329 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5330 | |
722247f1 | 5331 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5332 | /* There's still at least an event left. */ |
5333 | mark_async_event_handler (remote_async_inferior_event_token); | |
5334 | ||
722247f1 | 5335 | return r; |
74531fed PA |
5336 | } |
5337 | ||
5338 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5339 | know that we now have at least one queued event left to pass to the | |
5340 | core side, tell the event loop to get back to target_wait soon. */ | |
5341 | ||
5342 | static void | |
5343 | push_stop_reply (struct stop_reply *new_event) | |
5344 | { | |
722247f1 | 5345 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5346 | |
722247f1 YQ |
5347 | if (notif_debug) |
5348 | fprintf_unfiltered (gdb_stdlog, | |
5349 | "notif: push 'Stop' %s to queue %d\n", | |
5350 | target_pid_to_str (new_event->ptid), | |
5351 | QUEUE_length (stop_reply_p, | |
5352 | stop_reply_queue)); | |
74531fed PA |
5353 | |
5354 | mark_async_event_handler (remote_async_inferior_event_token); | |
5355 | } | |
5356 | ||
722247f1 YQ |
5357 | static int |
5358 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5359 | QUEUE_ITER (stop_reply_p) *iter, | |
5360 | struct stop_reply *event, | |
5361 | void *data) | |
5362 | { | |
5363 | ptid_t *ptid = data; | |
5364 | ||
5365 | return !(ptid_equal (*ptid, event->ptid) | |
5366 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5367 | } | |
5368 | ||
74531fed PA |
5369 | /* Returns true if we have a stop reply for PTID. */ |
5370 | ||
5371 | static int | |
5372 | peek_stop_reply (ptid_t ptid) | |
5373 | { | |
722247f1 YQ |
5374 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5375 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5376 | } |
5377 | ||
5378 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5379 | result is stored in EVENT, or throws an error. */ | |
5380 | ||
5381 | static void | |
5382 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5383 | { | |
5384 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5385 | ULONGEST addr; | |
5386 | char *p; | |
5387 | ||
5388 | event->ptid = null_ptid; | |
bcc75809 | 5389 | event->rs = get_remote_state (); |
74531fed PA |
5390 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5391 | event->ws.value.integer = 0; | |
74531fed PA |
5392 | event->stopped_by_watchpoint_p = 0; |
5393 | event->regcache = NULL; | |
dc146f7c | 5394 | event->core = -1; |
74531fed PA |
5395 | |
5396 | switch (buf[0]) | |
5397 | { | |
5398 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5399 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5400 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5401 | ss = signal number | |
5402 | n... = register number | |
5403 | r... = register contents | |
5404 | */ | |
5405 | ||
5406 | p = &buf[3]; /* after Txx */ | |
5407 | while (*p) | |
5408 | { | |
5409 | char *p1; | |
5410 | char *p_temp; | |
5411 | int fieldsize; | |
5412 | LONGEST pnum = 0; | |
43ff13b4 | 5413 | |
cea39f65 MS |
5414 | /* If the packet contains a register number, save it in |
5415 | pnum and set p1 to point to the character following it. | |
5416 | Otherwise p1 points to p. */ | |
3c3bea1c | 5417 | |
cea39f65 MS |
5418 | /* If this packet is an awatch packet, don't parse the 'a' |
5419 | as a register number. */ | |
c8e38a49 | 5420 | |
dc146f7c VP |
5421 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5422 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5423 | { |
5424 | /* Read the ``P'' register number. */ | |
5425 | pnum = strtol (p, &p_temp, 16); | |
5426 | p1 = p_temp; | |
5427 | } | |
5428 | else | |
5429 | p1 = p; | |
802188a7 | 5430 | |
cea39f65 MS |
5431 | if (p1 == p) /* No register number present here. */ |
5432 | { | |
5433 | p1 = strchr (p, ':'); | |
5434 | if (p1 == NULL) | |
5435 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5436 | Packet: '%s'\n"), |
cea39f65 MS |
5437 | p, buf); |
5438 | if (strncmp (p, "thread", p1 - p) == 0) | |
5439 | event->ptid = read_ptid (++p1, &p); | |
5440 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5441 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5442 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5443 | { | |
5444 | event->stopped_by_watchpoint_p = 1; | |
5445 | p = unpack_varlen_hex (++p1, &addr); | |
5446 | event->watch_data_address = (CORE_ADDR) addr; | |
5447 | } | |
5448 | else if (strncmp (p, "library", p1 - p) == 0) | |
5449 | { | |
5450 | p1++; | |
5451 | p_temp = p1; | |
5452 | while (*p_temp && *p_temp != ';') | |
5453 | p_temp++; | |
c8e38a49 | 5454 | |
5b5596ff | 5455 | event->ws.kind = TARGET_WAITKIND_LOADED; |
cea39f65 MS |
5456 | p = p_temp; |
5457 | } | |
5458 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5459 | { | |
5b5596ff PA |
5460 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; |
5461 | /* p1 will indicate "begin" or "end", but it makes | |
5462 | no difference for now, so ignore it. */ | |
cea39f65 MS |
5463 | p_temp = strchr (p1 + 1, ';'); |
5464 | if (p_temp) | |
c8e38a49 | 5465 | p = p_temp; |
cea39f65 | 5466 | } |
dc146f7c VP |
5467 | else if (strncmp (p, "core", p1 - p) == 0) |
5468 | { | |
5469 | ULONGEST c; | |
a744cf53 | 5470 | |
dc146f7c VP |
5471 | p = unpack_varlen_hex (++p1, &c); |
5472 | event->core = c; | |
5473 | } | |
cea39f65 MS |
5474 | else |
5475 | { | |
5476 | /* Silently skip unknown optional info. */ | |
5477 | p_temp = strchr (p1 + 1, ';'); | |
5478 | if (p_temp) | |
5479 | p = p_temp; | |
5480 | } | |
5481 | } | |
5482 | else | |
5483 | { | |
5484 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5485 | cached_reg_t cached_reg; | |
74531fed | 5486 | |
cea39f65 | 5487 | p = p1; |
75c99385 | 5488 | |
cea39f65 MS |
5489 | if (*p != ':') |
5490 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5491 | Packet: '%s'\n"), |
cea39f65 MS |
5492 | p, buf); |
5493 | ++p; | |
43ff13b4 | 5494 | |
cea39f65 MS |
5495 | if (reg == NULL) |
5496 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5497 | Packet: '%s'\n"), |
7c47795c | 5498 | hex_string (pnum), p, buf); |
c8e38a49 | 5499 | |
cea39f65 | 5500 | cached_reg.num = reg->regnum; |
4100683b | 5501 | |
cea39f65 | 5502 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5503 | register_size (target_gdbarch (), |
cea39f65 MS |
5504 | reg->regnum)); |
5505 | p += 2 * fieldsize; | |
f5656ead | 5506 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5507 | reg->regnum)) |
5508 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5509 | |
cea39f65 MS |
5510 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5511 | } | |
c8e38a49 | 5512 | |
cea39f65 MS |
5513 | if (*p != ';') |
5514 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5515 | buf, p); | |
5516 | ++p; | |
5517 | } | |
5b5596ff PA |
5518 | |
5519 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5520 | break; | |
5521 | ||
c8e38a49 PA |
5522 | /* fall through */ |
5523 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5524 | { |
5525 | int sig; | |
5526 | ||
5527 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5528 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5529 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5530 | event->ws.value.sig = (enum gdb_signal) sig; | |
5531 | else | |
5532 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5533 | } | |
c8e38a49 PA |
5534 | break; |
5535 | case 'W': /* Target exited. */ | |
5536 | case 'X': | |
5537 | { | |
5538 | char *p; | |
5539 | int pid; | |
5540 | ULONGEST value; | |
82f73884 | 5541 | |
c8e38a49 PA |
5542 | /* GDB used to accept only 2 hex chars here. Stubs should |
5543 | only send more if they detect GDB supports multi-process | |
5544 | support. */ | |
5545 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5546 | |
c8e38a49 PA |
5547 | if (buf[0] == 'W') |
5548 | { | |
5549 | /* The remote process exited. */ | |
74531fed PA |
5550 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5551 | event->ws.value.integer = value; | |
c8e38a49 PA |
5552 | } |
5553 | else | |
5554 | { | |
5555 | /* The remote process exited with a signal. */ | |
74531fed | 5556 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5557 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5558 | event->ws.value.sig = (enum gdb_signal) value; | |
5559 | else | |
5560 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5561 | } |
82f73884 | 5562 | |
c8e38a49 PA |
5563 | /* If no process is specified, assume inferior_ptid. */ |
5564 | pid = ptid_get_pid (inferior_ptid); | |
5565 | if (*p == '\0') | |
5566 | ; | |
5567 | else if (*p == ';') | |
5568 | { | |
5569 | p++; | |
5570 | ||
5571 | if (p == '\0') | |
82f73884 | 5572 | ; |
c8e38a49 PA |
5573 | else if (strncmp (p, |
5574 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5575 | { |
c8e38a49 | 5576 | ULONGEST upid; |
a744cf53 | 5577 | |
c8e38a49 PA |
5578 | p += sizeof ("process:") - 1; |
5579 | unpack_varlen_hex (p, &upid); | |
5580 | pid = upid; | |
82f73884 PA |
5581 | } |
5582 | else | |
5583 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5584 | } |
c8e38a49 PA |
5585 | else |
5586 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5587 | event->ptid = pid_to_ptid (pid); |
5588 | } | |
5589 | break; | |
5590 | } | |
5591 | ||
5592 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5593 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5594 | } | |
5595 | ||
722247f1 YQ |
5596 | /* When the stub wants to tell GDB about a new notification reply, it |
5597 | sends a notification (%Stop, for example). Those can come it at | |
5598 | any time, hence, we have to make sure that any pending | |
5599 | putpkt/getpkt sequence we're making is finished, before querying | |
5600 | the stub for more events with the corresponding ack command | |
5601 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5602 | immediately upon receiving the notification, something like this | |
5603 | could happen: | |
74531fed PA |
5604 | |
5605 | 1.1) --> Hg 1 | |
5606 | 1.2) <-- OK | |
5607 | 1.3) --> g | |
5608 | 1.4) <-- %Stop | |
5609 | 1.5) --> vStopped | |
5610 | 1.6) <-- (registers reply to step #1.3) | |
5611 | ||
5612 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5613 | query. | |
5614 | ||
796cb314 | 5615 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5616 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5617 | doing whatever we were doing: | |
5618 | ||
5619 | 2.1) --> Hg 1 | |
5620 | 2.2) <-- OK | |
5621 | 2.3) --> g | |
5622 | 2.4) <-- %Stop | |
5623 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5624 | 2.5) <-- (registers reply to step #2.3) | |
5625 | ||
5626 | Eventualy after step #2.5, we return to the event loop, which | |
5627 | notices there's an event on the | |
5628 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5629 | associated callback --- the function below. At this point, we're | |
5630 | always safe to start a vStopped sequence. : | |
5631 | ||
5632 | 2.6) --> vStopped | |
5633 | 2.7) <-- T05 thread:2 | |
5634 | 2.8) --> vStopped | |
5635 | 2.9) --> OK | |
5636 | */ | |
5637 | ||
722247f1 YQ |
5638 | void |
5639 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5640 | { |
5641 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5642 | |
f48ff2a7 | 5643 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5644 | { |
722247f1 YQ |
5645 | if (notif_debug) |
5646 | fprintf_unfiltered (gdb_stdlog, | |
5647 | "notif: process: '%s' ack pending event\n", | |
5648 | nc->name); | |
74531fed | 5649 | |
722247f1 | 5650 | /* acknowledge */ |
f48ff2a7 YQ |
5651 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5652 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5653 | |
5654 | while (1) | |
5655 | { | |
5656 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5657 | if (strcmp (rs->buf, "OK") == 0) | |
5658 | break; | |
5659 | else | |
722247f1 | 5660 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5661 | } |
5662 | } | |
722247f1 YQ |
5663 | else |
5664 | { | |
5665 | if (notif_debug) | |
5666 | fprintf_unfiltered (gdb_stdlog, | |
5667 | "notif: process: '%s' no pending reply\n", | |
5668 | nc->name); | |
5669 | } | |
74531fed PA |
5670 | } |
5671 | ||
74531fed PA |
5672 | /* Called when it is decided that STOP_REPLY holds the info of the |
5673 | event that is to be returned to the core. This function always | |
5674 | destroys STOP_REPLY. */ | |
5675 | ||
5676 | static ptid_t | |
5677 | process_stop_reply (struct stop_reply *stop_reply, | |
5678 | struct target_waitstatus *status) | |
5679 | { | |
5680 | ptid_t ptid; | |
5681 | ||
5682 | *status = stop_reply->ws; | |
5683 | ptid = stop_reply->ptid; | |
5684 | ||
5685 | /* If no thread/process was reported by the stub, assume the current | |
5686 | inferior. */ | |
5687 | if (ptid_equal (ptid, null_ptid)) | |
5688 | ptid = inferior_ptid; | |
5689 | ||
5f3563ea PA |
5690 | if (status->kind != TARGET_WAITKIND_EXITED |
5691 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5692 | { |
ee154bee TT |
5693 | struct remote_state *rs = get_remote_state (); |
5694 | ||
5f3563ea PA |
5695 | /* Expedited registers. */ |
5696 | if (stop_reply->regcache) | |
5697 | { | |
217f1f79 | 5698 | struct regcache *regcache |
f5656ead | 5699 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5700 | cached_reg_t *reg; |
5701 | int ix; | |
5702 | ||
5703 | for (ix = 0; | |
5704 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5705 | ix++) | |
217f1f79 | 5706 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5707 | VEC_free (cached_reg_t, stop_reply->regcache); |
5708 | } | |
74531fed | 5709 | |
ee154bee TT |
5710 | rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5711 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5712 | |
5713 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5714 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5715 | } |
5716 | ||
74531fed PA |
5717 | stop_reply_xfree (stop_reply); |
5718 | return ptid; | |
5719 | } | |
5720 | ||
5721 | /* The non-stop mode version of target_wait. */ | |
5722 | ||
5723 | static ptid_t | |
47608cb1 | 5724 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5725 | { |
5726 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5727 | struct stop_reply *stop_reply; |
5728 | int ret; | |
fee9eda9 | 5729 | int is_notif = 0; |
74531fed PA |
5730 | |
5731 | /* If in non-stop mode, get out of getpkt even if a | |
5732 | notification is received. */ | |
5733 | ||
5734 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5735 | 0 /* forever */, &is_notif); |
74531fed PA |
5736 | while (1) |
5737 | { | |
fee9eda9 | 5738 | if (ret != -1 && !is_notif) |
74531fed PA |
5739 | switch (rs->buf[0]) |
5740 | { | |
5741 | case 'E': /* Error of some sort. */ | |
5742 | /* We're out of sync with the target now. Did it continue | |
5743 | or not? We can't tell which thread it was in non-stop, | |
5744 | so just ignore this. */ | |
5745 | warning (_("Remote failure reply: %s"), rs->buf); | |
5746 | break; | |
5747 | case 'O': /* Console output. */ | |
5748 | remote_console_output (rs->buf + 1); | |
5749 | break; | |
5750 | default: | |
5751 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5752 | break; | |
5753 | } | |
5754 | ||
5755 | /* Acknowledge a pending stop reply that may have arrived in the | |
5756 | mean time. */ | |
f48ff2a7 | 5757 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 5758 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
5759 | |
5760 | /* If indeed we noticed a stop reply, we're done. */ | |
5761 | stop_reply = queued_stop_reply (ptid); | |
5762 | if (stop_reply != NULL) | |
5763 | return process_stop_reply (stop_reply, status); | |
5764 | ||
47608cb1 | 5765 | /* Still no event. If we're just polling for an event, then |
74531fed | 5766 | return to the event loop. */ |
47608cb1 | 5767 | if (options & TARGET_WNOHANG) |
74531fed PA |
5768 | { |
5769 | status->kind = TARGET_WAITKIND_IGNORE; | |
5770 | return minus_one_ptid; | |
5771 | } | |
5772 | ||
47608cb1 | 5773 | /* Otherwise do a blocking wait. */ |
74531fed | 5774 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5775 | 1 /* forever */, &is_notif); |
74531fed PA |
5776 | } |
5777 | } | |
5778 | ||
5779 | /* Wait until the remote machine stops, then return, storing status in | |
5780 | STATUS just as `wait' would. */ | |
5781 | ||
5782 | static ptid_t | |
47608cb1 | 5783 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5784 | { |
5785 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5786 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5787 | char *buf; |
74531fed PA |
5788 | struct stop_reply *stop_reply; |
5789 | ||
47608cb1 PA |
5790 | again: |
5791 | ||
74531fed PA |
5792 | status->kind = TARGET_WAITKIND_IGNORE; |
5793 | status->value.integer = 0; | |
5794 | ||
5795 | stop_reply = queued_stop_reply (ptid); | |
5796 | if (stop_reply != NULL) | |
5797 | return process_stop_reply (stop_reply, status); | |
5798 | ||
5799 | if (rs->cached_wait_status) | |
5800 | /* Use the cached wait status, but only once. */ | |
5801 | rs->cached_wait_status = 0; | |
5802 | else | |
5803 | { | |
5804 | int ret; | |
722247f1 | 5805 | int is_notif; |
74531fed PA |
5806 | |
5807 | if (!target_is_async_p ()) | |
5808 | { | |
934b9bac | 5809 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
5810 | /* If the user hit C-c before this packet, or between packets, |
5811 | pretend that it was hit right here. */ | |
522002f9 | 5812 | if (check_quit_flag ()) |
74531fed | 5813 | { |
522002f9 | 5814 | clear_quit_flag (); |
934b9bac | 5815 | sync_remote_interrupt (SIGINT); |
74531fed PA |
5816 | } |
5817 | } | |
5818 | ||
5819 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5820 | _never_ wait for ever -> test on target_is_async_p(). | |
5821 | However, before we do that we need to ensure that the caller | |
5822 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
5823 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5824 | wait_forever_enabled_p, &is_notif); | |
5825 | ||
5e1b953b SDJ |
5826 | if (!target_is_async_p ()) |
5827 | signal (SIGINT, ofunc); | |
5828 | ||
722247f1 YQ |
5829 | /* GDB gets a notification. Return to core as this event is |
5830 | not interesting. */ | |
5831 | if (ret != -1 && is_notif) | |
5832 | return minus_one_ptid; | |
74531fed PA |
5833 | } |
5834 | ||
5835 | buf = rs->buf; | |
5836 | ||
ee154bee | 5837 | rs->remote_stopped_by_watchpoint_p = 0; |
74531fed PA |
5838 | |
5839 | /* We got something. */ | |
5840 | rs->waiting_for_stop_reply = 0; | |
5841 | ||
3a29589a DJ |
5842 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5843 | an 'F' or 'O' packet. */ | |
5844 | if (buf[0] != 'F' && buf[0] != 'O') | |
5845 | rs->ctrlc_pending_p = 0; | |
5846 | ||
74531fed PA |
5847 | switch (buf[0]) |
5848 | { | |
5849 | case 'E': /* Error of some sort. */ | |
5850 | /* We're out of sync with the target now. Did it continue or | |
5851 | not? Not is more likely, so report a stop. */ | |
5852 | warning (_("Remote failure reply: %s"), buf); | |
5853 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 5854 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
5855 | break; |
5856 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5857 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5858 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5859 | break; |
5860 | case 'T': case 'S': case 'X': case 'W': | |
5861 | { | |
722247f1 YQ |
5862 | struct stop_reply *stop_reply |
5863 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
5864 | rs->buf); | |
74531fed | 5865 | |
74531fed | 5866 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
5867 | break; |
5868 | } | |
5869 | case 'O': /* Console output. */ | |
5870 | remote_console_output (buf + 1); | |
e24a49d8 | 5871 | |
c8e38a49 PA |
5872 | /* The target didn't really stop; keep waiting. */ |
5873 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5874 | |
c8e38a49 PA |
5875 | break; |
5876 | case '\0': | |
b73be471 | 5877 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
5878 | { |
5879 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5880 | remote system doesn't support it. */ | |
5881 | target_terminal_ours_for_output (); | |
5882 | printf_filtered | |
5883 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
5884 | gdb_signal_to_name (rs->last_sent_signal)); |
5885 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
5886 | target_terminal_inferior (); |
5887 | ||
280ceea3 | 5888 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
5889 | putpkt ((char *) buf); |
5890 | ||
5891 | /* We just told the target to resume, so a stop reply is in | |
5892 | order. */ | |
e24a49d8 | 5893 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5894 | break; |
43ff13b4 | 5895 | } |
c8e38a49 PA |
5896 | /* else fallthrough */ |
5897 | default: | |
5898 | warning (_("Invalid remote reply: %s"), buf); | |
5899 | /* Keep waiting. */ | |
5900 | rs->waiting_for_stop_reply = 1; | |
5901 | break; | |
43ff13b4 | 5902 | } |
c8e38a49 | 5903 | |
c8e38a49 | 5904 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5905 | { |
5906 | /* Nothing interesting happened. If we're doing a non-blocking | |
5907 | poll, we're done. Otherwise, go back to waiting. */ | |
5908 | if (options & TARGET_WNOHANG) | |
5909 | return minus_one_ptid; | |
5910 | else | |
5911 | goto again; | |
5912 | } | |
74531fed PA |
5913 | else if (status->kind != TARGET_WAITKIND_EXITED |
5914 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5915 | { |
5916 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 5917 | record_currthread (rs, event_ptid); |
82f73884 PA |
5918 | else |
5919 | event_ptid = inferior_ptid; | |
43ff13b4 | 5920 | } |
74531fed PA |
5921 | else |
5922 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 5923 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 5924 | |
82f73884 | 5925 | return event_ptid; |
43ff13b4 JM |
5926 | } |
5927 | ||
74531fed PA |
5928 | /* Wait until the remote machine stops, then return, storing status in |
5929 | STATUS just as `wait' would. */ | |
5930 | ||
c8e38a49 | 5931 | static ptid_t |
117de6a9 | 5932 | remote_wait (struct target_ops *ops, |
47608cb1 | 5933 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5934 | { |
5935 | ptid_t event_ptid; | |
5936 | ||
74531fed | 5937 | if (non_stop) |
47608cb1 | 5938 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5939 | else |
47608cb1 | 5940 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5941 | |
74531fed | 5942 | if (target_can_async_p ()) |
c8e38a49 | 5943 | { |
74531fed PA |
5944 | /* If there are are events left in the queue tell the event loop |
5945 | to return here. */ | |
722247f1 | 5946 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 5947 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 5948 | } |
c8e38a49 PA |
5949 | |
5950 | return event_ptid; | |
5951 | } | |
5952 | ||
74ca34ce | 5953 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5954 | |
b96ec7ac | 5955 | static int |
56be3814 | 5956 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5957 | { |
5958 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5959 | char *buf, *p; |
b96ec7ac AC |
5960 | char regp[MAX_REGISTER_SIZE]; |
5961 | int i; | |
5962 | ||
4082afcc | 5963 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
5964 | return 0; |
5965 | ||
5966 | if (reg->pnum == -1) | |
5967 | return 0; | |
5968 | ||
2e9f7625 | 5969 | p = rs->buf; |
fcad0fa4 | 5970 | *p++ = 'p'; |
74ca34ce | 5971 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5972 | *p++ = '\0'; |
1f4437a4 MS |
5973 | putpkt (rs->buf); |
5974 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5975 | |
2e9f7625 DJ |
5976 | buf = rs->buf; |
5977 | ||
74ca34ce DJ |
5978 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5979 | { | |
5980 | case PACKET_OK: | |
5981 | break; | |
5982 | case PACKET_UNKNOWN: | |
5983 | return 0; | |
5984 | case PACKET_ERROR: | |
27a9c0bf MS |
5985 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5986 | gdbarch_register_name (get_regcache_arch (regcache), | |
5987 | reg->regnum), | |
5988 | buf); | |
74ca34ce | 5989 | } |
3f9a994c JB |
5990 | |
5991 | /* If this register is unfetchable, tell the regcache. */ | |
5992 | if (buf[0] == 'x') | |
8480adf2 | 5993 | { |
56be3814 | 5994 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5995 | return 1; |
b96ec7ac | 5996 | } |
b96ec7ac | 5997 | |
3f9a994c JB |
5998 | /* Otherwise, parse and supply the value. */ |
5999 | p = buf; | |
6000 | i = 0; | |
6001 | while (p[0] != 0) | |
6002 | { | |
6003 | if (p[1] == 0) | |
74ca34ce | 6004 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6005 | |
6006 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6007 | p += 2; | |
6008 | } | |
56be3814 | 6009 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6010 | return 1; |
b96ec7ac AC |
6011 | } |
6012 | ||
74ca34ce DJ |
6013 | /* Fetch the registers included in the target's 'g' packet. */ |
6014 | ||
29709017 DJ |
6015 | static int |
6016 | send_g_packet (void) | |
c906108c | 6017 | { |
d01949b6 | 6018 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6019 | int buf_len; |
c906108c | 6020 | |
bba74b36 | 6021 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6022 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6023 | |
29709017 DJ |
6024 | /* We can get out of synch in various cases. If the first character |
6025 | in the buffer is not a hex character, assume that has happened | |
6026 | and try to fetch another packet to read. */ | |
6027 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6028 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6029 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6030 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6031 | { | |
6032 | if (remote_debug) | |
6033 | fprintf_unfiltered (gdb_stdlog, | |
6034 | "Bad register packet; fetching a new packet\n"); | |
6035 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6036 | } | |
6037 | ||
74ca34ce DJ |
6038 | buf_len = strlen (rs->buf); |
6039 | ||
6040 | /* Sanity check the received packet. */ | |
6041 | if (buf_len % 2 != 0) | |
6042 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6043 | |
6044 | return buf_len / 2; | |
6045 | } | |
6046 | ||
6047 | static void | |
56be3814 | 6048 | process_g_packet (struct regcache *regcache) |
29709017 | 6049 | { |
4a22f64d | 6050 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6051 | struct remote_state *rs = get_remote_state (); |
6052 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6053 | int i, buf_len; | |
6054 | char *p; | |
6055 | char *regs; | |
6056 | ||
6057 | buf_len = strlen (rs->buf); | |
6058 | ||
6059 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6060 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6061 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6062 | ||
6063 | /* Save the size of the packet sent to us by the target. It is used | |
6064 | as a heuristic when determining the max size of packets that the | |
6065 | target can safely receive. */ | |
6066 | if (rsa->actual_register_packet_size == 0) | |
6067 | rsa->actual_register_packet_size = buf_len; | |
6068 | ||
6069 | /* If this is smaller than we guessed the 'g' packet would be, | |
6070 | update our records. A 'g' reply that doesn't include a register's | |
6071 | value implies either that the register is not available, or that | |
6072 | the 'p' packet must be used. */ | |
6073 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6074 | { |
74ca34ce DJ |
6075 | rsa->sizeof_g_packet = buf_len / 2; |
6076 | ||
4a22f64d | 6077 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6078 | { |
74ca34ce DJ |
6079 | if (rsa->regs[i].pnum == -1) |
6080 | continue; | |
6081 | ||
6082 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6083 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6084 | else |
74ca34ce | 6085 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6086 | } |
74ca34ce | 6087 | } |
b323314b | 6088 | |
74ca34ce | 6089 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6090 | |
6091 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6092 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6093 | |
c906108c SS |
6094 | /* Reply describes registers byte by byte, each byte encoded as two |
6095 | hex characters. Suck them all up, then supply them to the | |
6096 | register cacheing/storage mechanism. */ | |
6097 | ||
74ca34ce | 6098 | p = rs->buf; |
ea9c271d | 6099 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6100 | { |
74ca34ce DJ |
6101 | if (p[0] == 0 || p[1] == 0) |
6102 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6103 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6104 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6105 | |
c906108c | 6106 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6107 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6108 | else |
6109 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6110 | p += 2; | |
6111 | } | |
6112 | ||
a744cf53 MS |
6113 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6114 | { | |
6115 | struct packet_reg *r = &rsa->regs[i]; | |
6116 | ||
6117 | if (r->in_g_packet) | |
6118 | { | |
6119 | if (r->offset * 2 >= strlen (rs->buf)) | |
6120 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6121 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6122 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6123 | else if (rs->buf[r->offset * 2] == 'x') |
6124 | { | |
6125 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6126 | /* The register isn't available, mark it as such (at | |
6127 | the same time setting the value to zero). */ | |
6128 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6129 | } | |
6130 | else | |
6131 | regcache_raw_supply (regcache, r->regnum, | |
6132 | regs + r->offset); | |
6133 | } | |
6134 | } | |
c906108c SS |
6135 | } |
6136 | ||
29709017 | 6137 | static void |
56be3814 | 6138 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6139 | { |
6140 | send_g_packet (); | |
56be3814 | 6141 | process_g_packet (regcache); |
29709017 DJ |
6142 | } |
6143 | ||
e6e4e701 PA |
6144 | /* Make the remote selected traceframe match GDB's selected |
6145 | traceframe. */ | |
6146 | ||
6147 | static void | |
6148 | set_remote_traceframe (void) | |
6149 | { | |
6150 | int newnum; | |
262e1174 | 6151 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6152 | |
262e1174 | 6153 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6154 | return; |
6155 | ||
6156 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6157 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6158 | |
6159 | newnum = target_trace_find (tfind_number, | |
6160 | get_traceframe_number (), 0, 0, NULL); | |
6161 | ||
6162 | /* Should not happen. If it does, all bets are off. */ | |
6163 | if (newnum != get_traceframe_number ()) | |
6164 | warning (_("could not set remote traceframe")); | |
6165 | } | |
6166 | ||
74ca34ce | 6167 | static void |
28439f5e PA |
6168 | remote_fetch_registers (struct target_ops *ops, |
6169 | struct regcache *regcache, int regnum) | |
74ca34ce | 6170 | { |
74ca34ce DJ |
6171 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6172 | int i; | |
6173 | ||
e6e4e701 | 6174 | set_remote_traceframe (); |
79d7f229 | 6175 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6176 | |
6177 | if (regnum >= 0) | |
6178 | { | |
6179 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6180 | |
74ca34ce DJ |
6181 | gdb_assert (reg != NULL); |
6182 | ||
6183 | /* If this register might be in the 'g' packet, try that first - | |
6184 | we are likely to read more than one register. If this is the | |
6185 | first 'g' packet, we might be overly optimistic about its | |
6186 | contents, so fall back to 'p'. */ | |
6187 | if (reg->in_g_packet) | |
6188 | { | |
56be3814 | 6189 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6190 | if (reg->in_g_packet) |
6191 | return; | |
6192 | } | |
6193 | ||
56be3814 | 6194 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6195 | return; |
6196 | ||
6197 | /* This register is not available. */ | |
56be3814 | 6198 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6199 | |
6200 | return; | |
6201 | } | |
6202 | ||
56be3814 | 6203 | fetch_registers_using_g (regcache); |
74ca34ce | 6204 | |
4a22f64d | 6205 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6206 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6207 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6208 | { |
6209 | /* This register is not available. */ | |
56be3814 | 6210 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6211 | } |
6212 | } | |
6213 | ||
c906108c SS |
6214 | /* Prepare to store registers. Since we may send them all (using a |
6215 | 'G' request), we have to read out the ones we don't want to change | |
6216 | first. */ | |
6217 | ||
c5aa993b | 6218 | static void |
f32dbf8c | 6219 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6220 | { |
ea9c271d | 6221 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6222 | int i; |
cfd77fa1 | 6223 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6224 | |
c906108c | 6225 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6226 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6227 | { |
6228 | case PACKET_DISABLE: | |
6229 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6230 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6231 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6232 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6233 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6234 | break; |
6235 | case PACKET_ENABLE: | |
6236 | break; | |
6237 | } | |
6238 | } | |
6239 | ||
ad10f812 | 6240 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6241 | packet was not recognized. */ |
5a2468f5 JM |
6242 | |
6243 | static int | |
1f4437a4 MS |
6244 | store_register_using_P (const struct regcache *regcache, |
6245 | struct packet_reg *reg) | |
5a2468f5 | 6246 | { |
4a22f64d | 6247 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6248 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6249 | /* Try storing a single register. */ |
6d820c5c | 6250 | char *buf = rs->buf; |
cfd77fa1 | 6251 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6252 | char *p; |
5a2468f5 | 6253 | |
4082afcc | 6254 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6255 | return 0; |
6256 | ||
6257 | if (reg->pnum == -1) | |
6258 | return 0; | |
6259 | ||
ea9c271d | 6260 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6261 | p = buf + strlen (buf); |
56be3814 | 6262 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6263 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6264 | putpkt (rs->buf); |
6265 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6266 | |
74ca34ce DJ |
6267 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6268 | { | |
6269 | case PACKET_OK: | |
6270 | return 1; | |
6271 | case PACKET_ERROR: | |
27a9c0bf MS |
6272 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6273 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6274 | case PACKET_UNKNOWN: |
6275 | return 0; | |
6276 | default: | |
6277 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6278 | } | |
c906108c SS |
6279 | } |
6280 | ||
23860348 MS |
6281 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6282 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6283 | |
6284 | static void | |
56be3814 | 6285 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6286 | { |
d01949b6 | 6287 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6288 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6289 | gdb_byte *regs; |
c906108c SS |
6290 | char *p; |
6291 | ||
193cb69f AC |
6292 | /* Extract all the registers in the regcache copying them into a |
6293 | local buffer. */ | |
6294 | { | |
b323314b | 6295 | int i; |
a744cf53 | 6296 | |
ea9c271d DJ |
6297 | regs = alloca (rsa->sizeof_g_packet); |
6298 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6299 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6300 | { |
ea9c271d | 6301 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6302 | |
b323314b | 6303 | if (r->in_g_packet) |
56be3814 | 6304 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6305 | } |
6306 | } | |
c906108c SS |
6307 | |
6308 | /* Command describes registers byte by byte, | |
6309 | each byte encoded as two hex characters. */ | |
6d820c5c | 6310 | p = rs->buf; |
193cb69f | 6311 | *p++ = 'G'; |
74ca34ce DJ |
6312 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6313 | updated. */ | |
6314 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6315 | putpkt (rs->buf); |
6316 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6317 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6318 | error (_("Could not write registers; remote failure reply '%s'"), |
6319 | rs->buf); | |
c906108c | 6320 | } |
74ca34ce DJ |
6321 | |
6322 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6323 | of the register cache buffer. FIXME: ignores errors. */ | |
6324 | ||
6325 | static void | |
28439f5e PA |
6326 | remote_store_registers (struct target_ops *ops, |
6327 | struct regcache *regcache, int regnum) | |
74ca34ce | 6328 | { |
74ca34ce DJ |
6329 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6330 | int i; | |
6331 | ||
e6e4e701 | 6332 | set_remote_traceframe (); |
79d7f229 | 6333 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6334 | |
6335 | if (regnum >= 0) | |
6336 | { | |
6337 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6338 | |
74ca34ce DJ |
6339 | gdb_assert (reg != NULL); |
6340 | ||
6341 | /* Always prefer to store registers using the 'P' packet if | |
6342 | possible; we often change only a small number of registers. | |
6343 | Sometimes we change a larger number; we'd need help from a | |
6344 | higher layer to know to use 'G'. */ | |
56be3814 | 6345 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6346 | return; |
6347 | ||
6348 | /* For now, don't complain if we have no way to write the | |
6349 | register. GDB loses track of unavailable registers too | |
6350 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6351 | any way to read the register, either... */ |
74ca34ce DJ |
6352 | if (!reg->in_g_packet) |
6353 | return; | |
6354 | ||
56be3814 | 6355 | store_registers_using_G (regcache); |
74ca34ce DJ |
6356 | return; |
6357 | } | |
6358 | ||
56be3814 | 6359 | store_registers_using_G (regcache); |
74ca34ce | 6360 | |
4a22f64d | 6361 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6362 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6363 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6364 | /* See above for why we do not issue an error here. */ |
6365 | continue; | |
6366 | } | |
c906108c SS |
6367 | \f |
6368 | ||
6369 | /* Return the number of hex digits in num. */ | |
6370 | ||
6371 | static int | |
fba45db2 | 6372 | hexnumlen (ULONGEST num) |
c906108c SS |
6373 | { |
6374 | int i; | |
6375 | ||
6376 | for (i = 0; num != 0; i++) | |
6377 | num >>= 4; | |
6378 | ||
6379 | return max (i, 1); | |
6380 | } | |
6381 | ||
2df3850c | 6382 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6383 | |
6384 | static int | |
fba45db2 | 6385 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6386 | { |
c906108c | 6387 | int len = hexnumlen (num); |
a744cf53 | 6388 | |
2df3850c JM |
6389 | return hexnumnstr (buf, num, len); |
6390 | } | |
6391 | ||
c906108c | 6392 | |
2df3850c | 6393 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6394 | |
2df3850c | 6395 | static int |
fba45db2 | 6396 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6397 | { |
6398 | int i; | |
6399 | ||
6400 | buf[width] = '\0'; | |
6401 | ||
6402 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6403 | { |
c5aa993b | 6404 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6405 | num >>= 4; |
6406 | } | |
6407 | ||
2df3850c | 6408 | return width; |
c906108c SS |
6409 | } |
6410 | ||
23860348 | 6411 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6412 | |
6413 | static CORE_ADDR | |
fba45db2 | 6414 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6415 | { |
883b9c6c | 6416 | unsigned int address_size = remote_address_size; |
a744cf53 | 6417 | |
911c95a5 UW |
6418 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6419 | if (!address_size) | |
f5656ead | 6420 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6421 | |
6422 | if (address_size > 0 | |
6423 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6424 | { |
6425 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6426 | in a ULONGEST variable. */ |
c906108c | 6427 | ULONGEST mask = 1; |
a744cf53 | 6428 | |
911c95a5 | 6429 | mask = (mask << address_size) - 1; |
c906108c SS |
6430 | addr &= mask; |
6431 | } | |
6432 | return addr; | |
6433 | } | |
6434 | ||
6435 | /* Determine whether the remote target supports binary downloading. | |
6436 | This is accomplished by sending a no-op memory write of zero length | |
6437 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6438 | the whole packet, since many stubs strip the eighth bit and |
6439 | subsequently compute a wrong checksum, which causes real havoc with | |
6440 | remote_write_bytes. | |
7a292a7a | 6441 | |
96baa820 | 6442 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6443 | clean. In cases like this, the user should clear "remote |
23860348 | 6444 | X-packet". */ |
96baa820 | 6445 | |
c906108c | 6446 | static void |
fba45db2 | 6447 | check_binary_download (CORE_ADDR addr) |
c906108c | 6448 | { |
d01949b6 | 6449 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6450 | |
4082afcc | 6451 | switch (packet_support (PACKET_X)) |
c906108c | 6452 | { |
96baa820 JM |
6453 | case PACKET_DISABLE: |
6454 | break; | |
6455 | case PACKET_ENABLE: | |
6456 | break; | |
6457 | case PACKET_SUPPORT_UNKNOWN: | |
6458 | { | |
96baa820 | 6459 | char *p; |
802188a7 | 6460 | |
2e9f7625 | 6461 | p = rs->buf; |
96baa820 JM |
6462 | *p++ = 'X'; |
6463 | p += hexnumstr (p, (ULONGEST) addr); | |
6464 | *p++ = ','; | |
6465 | p += hexnumstr (p, (ULONGEST) 0); | |
6466 | *p++ = ':'; | |
6467 | *p = '\0'; | |
802188a7 | 6468 | |
2e9f7625 | 6469 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6470 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6471 | |
2e9f7625 | 6472 | if (rs->buf[0] == '\0') |
96baa820 JM |
6473 | { |
6474 | if (remote_debug) | |
6475 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6476 | "binary downloading NOT " |
6477 | "supported by target\n"); | |
444abaca | 6478 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6479 | } |
6480 | else | |
6481 | { | |
6482 | if (remote_debug) | |
6483 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6484 | "binary downloading supported by target\n"); |
444abaca | 6485 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6486 | } |
6487 | break; | |
6488 | } | |
c906108c SS |
6489 | } |
6490 | } | |
6491 | ||
6492 | /* Write memory data directly to the remote machine. | |
6493 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6494 | HEADER is the starting part of the packet. |
c906108c SS |
6495 | MEMADDR is the address in the remote memory space. |
6496 | MYADDR is the address of the buffer in our space. | |
6497 | LEN is the number of bytes. | |
a76d924d DJ |
6498 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6499 | should send data as binary ('X'), or hex-encoded ('M'). | |
6500 | ||
6501 | The function creates packet of the form | |
6502 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6503 | ||
6504 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6505 | ||
6506 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6507 | are omitted. | |
6508 | ||
9b409511 YQ |
6509 | Return the transferred status, error or OK (an |
6510 | 'enum target_xfer_status' value). Save the number of bytes | |
6511 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
c906108c | 6512 | |
9b409511 | 6513 | static enum target_xfer_status |
a76d924d | 6514 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
5d6df423 | 6515 | const gdb_byte *myaddr, ULONGEST len, |
9b409511 YQ |
6516 | ULONGEST *xfered_len, char packet_format, |
6517 | int use_length) | |
c906108c | 6518 | { |
6d820c5c | 6519 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6520 | char *p; |
a76d924d DJ |
6521 | char *plen = NULL; |
6522 | int plenlen = 0; | |
917317f4 JM |
6523 | int todo; |
6524 | int nr_bytes; | |
a257b5bb | 6525 | int payload_size; |
6765f3e5 | 6526 | int payload_length; |
a76d924d DJ |
6527 | int header_length; |
6528 | ||
6529 | if (packet_format != 'X' && packet_format != 'M') | |
6530 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6531 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6532 | |
5d6df423 | 6533 | if (len == 0) |
9b409511 | 6534 | return TARGET_XFER_EOF; |
b2182ed2 | 6535 | |
3de11b2e | 6536 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6537 | |
6d820c5c DJ |
6538 | /* The packet buffer will be large enough for the payload; |
6539 | get_memory_packet_size ensures this. */ | |
a76d924d | 6540 | rs->buf[0] = '\0'; |
c906108c | 6541 | |
a257b5bb | 6542 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6543 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6544 | ||
a76d924d DJ |
6545 | payload_size -= strlen ("$,:#NN"); |
6546 | if (!use_length) | |
0df8b418 | 6547 | /* The comma won't be used. */ |
a76d924d DJ |
6548 | payload_size += 1; |
6549 | header_length = strlen (header); | |
6550 | payload_size -= header_length; | |
3de11b2e | 6551 | payload_size -= hexnumlen (memaddr); |
c906108c | 6552 | |
a76d924d | 6553 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6554 | |
a76d924d DJ |
6555 | strcat (rs->buf, header); |
6556 | p = rs->buf + strlen (header); | |
6557 | ||
6558 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6559 | if (packet_format == 'X') | |
c906108c | 6560 | { |
23860348 | 6561 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6562 | todo = min (len, payload_size); |
a76d924d DJ |
6563 | if (use_length) |
6564 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6565 | todo = min (todo, payload_size); |
a76d924d DJ |
6566 | } |
6567 | else | |
6568 | { | |
23860348 | 6569 | /* Num bytes that will fit. */ |
a257b5bb | 6570 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6571 | if (use_length) |
6572 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6573 | todo = min (todo, payload_size / 2); |
917317f4 | 6574 | } |
a76d924d | 6575 | |
3de11b2e NS |
6576 | if (todo <= 0) |
6577 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6578 | _("minimum packet size too small to write data")); |
802188a7 | 6579 | |
6765f3e5 DJ |
6580 | /* If we already need another packet, then try to align the end |
6581 | of this packet to a useful boundary. */ | |
6582 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6583 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6584 | ||
a257b5bb | 6585 | /* Append "<memaddr>". */ |
917317f4 JM |
6586 | memaddr = remote_address_masked (memaddr); |
6587 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6588 | |
a76d924d DJ |
6589 | if (use_length) |
6590 | { | |
6591 | /* Append ",". */ | |
6592 | *p++ = ','; | |
802188a7 | 6593 | |
a76d924d DJ |
6594 | /* Append <len>. Retain the location/size of <len>. It may need to |
6595 | be adjusted once the packet body has been created. */ | |
6596 | plen = p; | |
6597 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6598 | p += plenlen; | |
6599 | } | |
a257b5bb AC |
6600 | |
6601 | /* Append ":". */ | |
917317f4 JM |
6602 | *p++ = ':'; |
6603 | *p = '\0'; | |
802188a7 | 6604 | |
a257b5bb | 6605 | /* Append the packet body. */ |
a76d924d | 6606 | if (packet_format == 'X') |
917317f4 | 6607 | { |
917317f4 JM |
6608 | /* Binary mode. Send target system values byte by byte, in |
6609 | increasing byte addresses. Only escape certain critical | |
6610 | characters. */ | |
bc20a4af PA |
6611 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6612 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6613 | |
6614 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6615 | a second try to keep the end of the packet aligned. Don't do |
6616 | this if the packet is tiny. */ | |
6617 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6618 | { |
6619 | int new_nr_bytes; | |
6620 | ||
6621 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6622 | - memaddr); | |
6623 | if (new_nr_bytes != nr_bytes) | |
6624 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6625 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6626 | payload_size); |
6627 | } | |
6628 | ||
6629 | p += payload_length; | |
a76d924d | 6630 | if (use_length && nr_bytes < todo) |
c906108c | 6631 | { |
802188a7 | 6632 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6633 | and we have actually sent fewer bytes than planned. |
6634 | Fix-up the length field of the packet. Use the same | |
6635 | number of characters as before. */ | |
917317f4 JM |
6636 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6637 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6638 | } |
a76d924d DJ |
6639 | } |
6640 | else | |
6641 | { | |
917317f4 JM |
6642 | /* Normal mode: Send target system values byte by byte, in |
6643 | increasing byte addresses. Each byte is encoded as a two hex | |
6644 | value. */ | |
2644f393 | 6645 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6646 | p += 2 * nr_bytes; |
c906108c | 6647 | } |
802188a7 | 6648 | |
2e9f7625 | 6649 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6650 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6651 | |
2e9f7625 | 6652 | if (rs->buf[0] == 'E') |
00d84524 | 6653 | return TARGET_XFER_E_IO; |
802188a7 | 6654 | |
23860348 MS |
6655 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6656 | fewer bytes than we'd planned. */ | |
9b409511 YQ |
6657 | *xfered_len = (ULONGEST) nr_bytes; |
6658 | return TARGET_XFER_OK; | |
c906108c SS |
6659 | } |
6660 | ||
a76d924d DJ |
6661 | /* Write memory data directly to the remote machine. |
6662 | This does not inform the data cache; the data cache uses this. | |
6663 | MEMADDR is the address in the remote memory space. | |
6664 | MYADDR is the address of the buffer in our space. | |
6665 | LEN is the number of bytes. | |
6666 | ||
9b409511 YQ |
6667 | Return the transferred status, error or OK (an |
6668 | 'enum target_xfer_status' value). Save the number of bytes | |
6669 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 6670 | |
9b409511 YQ |
6671 | static enum target_xfer_status |
6672 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
6673 | ULONGEST *xfered_len) | |
a76d924d DJ |
6674 | { |
6675 | char *packet_format = 0; | |
6676 | ||
6677 | /* Check whether the target supports binary download. */ | |
6678 | check_binary_download (memaddr); | |
6679 | ||
4082afcc | 6680 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
6681 | { |
6682 | case PACKET_ENABLE: | |
6683 | packet_format = "X"; | |
6684 | break; | |
6685 | case PACKET_DISABLE: | |
6686 | packet_format = "M"; | |
6687 | break; | |
6688 | case PACKET_SUPPORT_UNKNOWN: | |
6689 | internal_error (__FILE__, __LINE__, | |
6690 | _("remote_write_bytes: bad internal state")); | |
6691 | default: | |
6692 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6693 | } | |
6694 | ||
6695 | return remote_write_bytes_aux (packet_format, | |
9b409511 YQ |
6696 | memaddr, myaddr, len, xfered_len, |
6697 | packet_format[0], 1); | |
a76d924d DJ |
6698 | } |
6699 | ||
9217e74e YQ |
6700 | /* Read memory data directly from the remote machine. |
6701 | This does not use the data cache; the data cache uses this. | |
6702 | MEMADDR is the address in the remote memory space. | |
6703 | MYADDR is the address of the buffer in our space. | |
6704 | LEN is the number of bytes. | |
6705 | ||
6706 | Return the transferred status, error or OK (an | |
6707 | 'enum target_xfer_status' value). Save the number of bytes | |
6708 | transferred in *XFERED_LEN. */ | |
6709 | ||
6710 | static enum target_xfer_status | |
6711 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len, | |
6712 | ULONGEST *xfered_len) | |
6713 | { | |
6714 | struct remote_state *rs = get_remote_state (); | |
6715 | int max_buf_size; /* Max size of packet output buffer. */ | |
6716 | char *p; | |
6717 | int todo; | |
6718 | int i; | |
6719 | ||
6720 | max_buf_size = get_memory_read_packet_size (); | |
6721 | /* The packet buffer will be large enough for the payload; | |
6722 | get_memory_packet_size ensures this. */ | |
6723 | ||
6724 | /* Number if bytes that will fit. */ | |
6725 | todo = min (len, max_buf_size / 2); | |
6726 | ||
6727 | /* Construct "m"<memaddr>","<len>". */ | |
6728 | memaddr = remote_address_masked (memaddr); | |
6729 | p = rs->buf; | |
6730 | *p++ = 'm'; | |
6731 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6732 | *p++ = ','; | |
6733 | p += hexnumstr (p, (ULONGEST) todo); | |
6734 | *p = '\0'; | |
6735 | putpkt (rs->buf); | |
6736 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6737 | if (rs->buf[0] == 'E' | |
6738 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6739 | && rs->buf[3] == '\0') | |
6740 | return TARGET_XFER_E_IO; | |
6741 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
6742 | characters. */ | |
6743 | p = rs->buf; | |
6744 | i = hex2bin (p, myaddr, todo); | |
6745 | /* Return what we have. Let higher layers handle partial reads. */ | |
6746 | *xfered_len = (ULONGEST) i; | |
6747 | return TARGET_XFER_OK; | |
6748 | } | |
6749 | ||
b55fbac4 YQ |
6750 | /* Using the set of read-only target sections of remote, read live |
6751 | read-only memory. | |
8acf9577 YQ |
6752 | |
6753 | For interface/parameters/return description see target.h, | |
6754 | to_xfer_partial. */ | |
6755 | ||
6756 | static enum target_xfer_status | |
b55fbac4 YQ |
6757 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
6758 | ULONGEST memaddr, ULONGEST len, | |
6759 | ULONGEST *xfered_len) | |
8acf9577 YQ |
6760 | { |
6761 | struct target_section *secp; | |
6762 | struct target_section_table *table; | |
6763 | ||
6764 | secp = target_section_by_addr (ops, memaddr); | |
6765 | if (secp != NULL | |
6766 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
6767 | secp->the_bfd_section) | |
6768 | & SEC_READONLY)) | |
6769 | { | |
6770 | struct target_section *p; | |
6771 | ULONGEST memend = memaddr + len; | |
6772 | ||
6773 | table = target_get_section_table (ops); | |
6774 | ||
6775 | for (p = table->sections; p < table->sections_end; p++) | |
6776 | { | |
6777 | if (memaddr >= p->addr) | |
6778 | { | |
6779 | if (memend <= p->endaddr) | |
6780 | { | |
6781 | /* Entire transfer is within this section. */ | |
b55fbac4 YQ |
6782 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6783 | xfered_len); | |
8acf9577 YQ |
6784 | } |
6785 | else if (memaddr >= p->endaddr) | |
6786 | { | |
6787 | /* This section ends before the transfer starts. */ | |
6788 | continue; | |
6789 | } | |
6790 | else | |
6791 | { | |
6792 | /* This section overlaps the transfer. Just do half. */ | |
6793 | len = p->endaddr - memaddr; | |
b55fbac4 YQ |
6794 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6795 | xfered_len); | |
8acf9577 YQ |
6796 | } |
6797 | } | |
6798 | } | |
6799 | } | |
6800 | ||
6801 | return TARGET_XFER_EOF; | |
6802 | } | |
6803 | ||
9217e74e YQ |
6804 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
6805 | first if the requested memory is unavailable in traceframe. | |
6806 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 6807 | |
9b409511 | 6808 | static enum target_xfer_status |
8acf9577 YQ |
6809 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
6810 | gdb_byte *myaddr, ULONGEST len, ULONGEST *xfered_len) | |
c906108c | 6811 | { |
6b6aa828 | 6812 | if (len == 0) |
b2182ed2 DJ |
6813 | return 0; |
6814 | ||
8acf9577 YQ |
6815 | if (get_traceframe_number () != -1) |
6816 | { | |
6817 | VEC(mem_range_s) *available; | |
6818 | ||
6819 | /* If we fail to get the set of available memory, then the | |
6820 | target does not support querying traceframe info, and so we | |
6821 | attempt reading from the traceframe anyway (assuming the | |
6822 | target implements the old QTro packet then). */ | |
6823 | if (traceframe_available_memory (&available, memaddr, len)) | |
6824 | { | |
6825 | struct cleanup *old_chain; | |
6826 | ||
6827 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
6828 | ||
6829 | if (VEC_empty (mem_range_s, available) | |
6830 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
6831 | { | |
6832 | enum target_xfer_status res; | |
6833 | ||
6834 | /* Don't read into the traceframe's available | |
6835 | memory. */ | |
6836 | if (!VEC_empty (mem_range_s, available)) | |
6837 | { | |
6838 | LONGEST oldlen = len; | |
6839 | ||
6840 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
6841 | gdb_assert (len <= oldlen); | |
6842 | } | |
6843 | ||
6844 | do_cleanups (old_chain); | |
6845 | ||
6846 | /* This goes through the topmost target again. */ | |
b55fbac4 | 6847 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
8acf9577 YQ |
6848 | len, xfered_len); |
6849 | if (res == TARGET_XFER_OK) | |
6850 | return TARGET_XFER_OK; | |
6851 | else | |
6852 | { | |
6853 | /* No use trying further, we know some memory starting | |
6854 | at MEMADDR isn't available. */ | |
6855 | *xfered_len = len; | |
6856 | return TARGET_XFER_UNAVAILABLE; | |
6857 | } | |
6858 | } | |
6859 | ||
6860 | /* Don't try to read more than how much is available, in | |
6861 | case the target implements the deprecated QTro packet to | |
6862 | cater for older GDBs (the target's knowledge of read-only | |
6863 | sections may be outdated by now). */ | |
6864 | len = VEC_index (mem_range_s, available, 0)->length; | |
6865 | ||
6866 | do_cleanups (old_chain); | |
6867 | } | |
6868 | } | |
6869 | ||
9217e74e | 6870 | return remote_read_bytes_1 (memaddr, myaddr, len, xfered_len); |
c906108c | 6871 | } |
74531fed | 6872 | |
c906108c | 6873 | \f |
c906108c | 6874 | |
a76d924d DJ |
6875 | /* Sends a packet with content determined by the printf format string |
6876 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6877 | whether the packet was a success, a failure, or unknown. */ | |
6878 | ||
2c0b251b | 6879 | static enum packet_result |
a76d924d DJ |
6880 | remote_send_printf (const char *format, ...) |
6881 | { | |
6882 | struct remote_state *rs = get_remote_state (); | |
6883 | int max_size = get_remote_packet_size (); | |
a76d924d | 6884 | va_list ap; |
a744cf53 | 6885 | |
a76d924d DJ |
6886 | va_start (ap, format); |
6887 | ||
6888 | rs->buf[0] = '\0'; | |
6889 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6890 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6891 | |
6892 | if (putpkt (rs->buf) < 0) | |
6893 | error (_("Communication problem with target.")); | |
6894 | ||
6895 | rs->buf[0] = '\0'; | |
6896 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6897 | ||
6898 | return packet_check_result (rs->buf); | |
6899 | } | |
6900 | ||
6901 | static void | |
6902 | restore_remote_timeout (void *p) | |
6903 | { | |
6904 | int value = *(int *)p; | |
a744cf53 | 6905 | |
a76d924d DJ |
6906 | remote_timeout = value; |
6907 | } | |
6908 | ||
6909 | /* Flash writing can take quite some time. We'll set | |
6910 | effectively infinite timeout for flash operations. | |
6911 | In future, we'll need to decide on a better approach. */ | |
6912 | static const int remote_flash_timeout = 1000; | |
6913 | ||
6914 | static void | |
6915 | remote_flash_erase (struct target_ops *ops, | |
6916 | ULONGEST address, LONGEST length) | |
6917 | { | |
f5656ead | 6918 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
6919 | int saved_remote_timeout = remote_timeout; |
6920 | enum packet_result ret; | |
a76d924d DJ |
6921 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6922 | &saved_remote_timeout); | |
a744cf53 | 6923 | |
a76d924d DJ |
6924 | remote_timeout = remote_flash_timeout; |
6925 | ||
6926 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6927 | phex (address, addr_size), |
a76d924d DJ |
6928 | phex (length, 4)); |
6929 | switch (ret) | |
6930 | { | |
6931 | case PACKET_UNKNOWN: | |
6932 | error (_("Remote target does not support flash erase")); | |
6933 | case PACKET_ERROR: | |
6934 | error (_("Error erasing flash with vFlashErase packet")); | |
6935 | default: | |
6936 | break; | |
6937 | } | |
6938 | ||
6939 | do_cleanups (back_to); | |
6940 | } | |
6941 | ||
9b409511 YQ |
6942 | static enum target_xfer_status |
6943 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
6944 | ULONGEST length, ULONGEST *xfered_len, | |
6945 | const gdb_byte *data) | |
a76d924d DJ |
6946 | { |
6947 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 6948 | enum target_xfer_status ret; |
a76d924d | 6949 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 6950 | &saved_remote_timeout); |
a76d924d DJ |
6951 | |
6952 | remote_timeout = remote_flash_timeout; | |
9b409511 YQ |
6953 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, |
6954 | xfered_len,'X', 0); | |
a76d924d DJ |
6955 | do_cleanups (back_to); |
6956 | ||
6957 | return ret; | |
6958 | } | |
6959 | ||
6960 | static void | |
6961 | remote_flash_done (struct target_ops *ops) | |
6962 | { | |
6963 | int saved_remote_timeout = remote_timeout; | |
6964 | int ret; | |
6965 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6966 | &saved_remote_timeout); | |
6967 | ||
6968 | remote_timeout = remote_flash_timeout; | |
6969 | ret = remote_send_printf ("vFlashDone"); | |
6970 | do_cleanups (back_to); | |
6971 | ||
6972 | switch (ret) | |
6973 | { | |
6974 | case PACKET_UNKNOWN: | |
6975 | error (_("Remote target does not support vFlashDone")); | |
6976 | case PACKET_ERROR: | |
6977 | error (_("Error finishing flash operation")); | |
6978 | default: | |
6979 | break; | |
6980 | } | |
6981 | } | |
6982 | ||
c906108c | 6983 | static void |
fba45db2 | 6984 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6985 | { |
6986 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6987 | } | |
6988 | \f | |
6989 | /* Stuff for dealing with the packets which are part of this protocol. | |
6990 | See comment at top of file for details. */ | |
6991 | ||
1927e618 PA |
6992 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
6993 | error to higher layers. Called when a serial error is detected. | |
6994 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
6995 | the system error message for errno at function entry and final dot |
6996 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
6997 | |
6998 | static void | |
6999 | unpush_and_perror (const char *string) | |
7000 | { | |
d6cb50a2 | 7001 | int saved_errno = errno; |
1927e618 PA |
7002 | |
7003 | remote_unpush_target (); | |
d6cb50a2 JK |
7004 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7005 | safe_strerror (saved_errno)); | |
1927e618 PA |
7006 | } |
7007 | ||
0876f84a | 7008 | /* Read a single character from the remote end. */ |
c906108c SS |
7009 | |
7010 | static int | |
fba45db2 | 7011 | readchar (int timeout) |
c906108c SS |
7012 | { |
7013 | int ch; | |
5d93a237 | 7014 | struct remote_state *rs = get_remote_state (); |
c906108c | 7015 | |
5d93a237 | 7016 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7017 | |
2acceee2 | 7018 | if (ch >= 0) |
0876f84a | 7019 | return ch; |
2acceee2 JM |
7020 | |
7021 | switch ((enum serial_rc) ch) | |
c906108c SS |
7022 | { |
7023 | case SERIAL_EOF: | |
78a095c3 | 7024 | remote_unpush_target (); |
598d3636 | 7025 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7026 | /* no return */ |
c906108c | 7027 | case SERIAL_ERROR: |
1927e618 PA |
7028 | unpush_and_perror (_("Remote communication error. " |
7029 | "Target disconnected.")); | |
2acceee2 | 7030 | /* no return */ |
c906108c | 7031 | case SERIAL_TIMEOUT: |
2acceee2 | 7032 | break; |
c906108c | 7033 | } |
2acceee2 | 7034 | return ch; |
c906108c SS |
7035 | } |
7036 | ||
c33e31fd PA |
7037 | /* Wrapper for serial_write that closes the target and throws if |
7038 | writing fails. */ | |
7039 | ||
7040 | static void | |
7041 | remote_serial_write (const char *str, int len) | |
7042 | { | |
5d93a237 TT |
7043 | struct remote_state *rs = get_remote_state (); |
7044 | ||
7045 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7046 | { |
1927e618 PA |
7047 | unpush_and_perror (_("Remote communication error. " |
7048 | "Target disconnected.")); | |
c33e31fd PA |
7049 | } |
7050 | } | |
7051 | ||
6d820c5c DJ |
7052 | /* Send the command in *BUF to the remote machine, and read the reply |
7053 | into *BUF. Report an error if we get an error reply. Resize | |
7054 | *BUF using xrealloc if necessary to hold the result, and update | |
7055 | *SIZEOF_BUF. */ | |
c906108c SS |
7056 | |
7057 | static void | |
6d820c5c DJ |
7058 | remote_send (char **buf, |
7059 | long *sizeof_buf) | |
c906108c | 7060 | { |
6d820c5c | 7061 | putpkt (*buf); |
c2d11a7d | 7062 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7063 | |
6d820c5c DJ |
7064 | if ((*buf)[0] == 'E') |
7065 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7066 | } |
7067 | ||
6e5abd65 PA |
7068 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7069 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7070 | etc. The caller is responsible for releasing the returned | |
7071 | memory. */ | |
7072 | ||
7073 | static char * | |
7074 | escape_buffer (const char *buf, int n) | |
7075 | { | |
7076 | struct cleanup *old_chain; | |
7077 | struct ui_file *stb; | |
7078 | char *str; | |
6e5abd65 PA |
7079 | |
7080 | stb = mem_fileopen (); | |
7081 | old_chain = make_cleanup_ui_file_delete (stb); | |
7082 | ||
7083 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7084 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7085 | do_cleanups (old_chain); |
7086 | return str; | |
7087 | } | |
7088 | ||
c906108c SS |
7089 | /* Display a null-terminated packet on stdout, for debugging, using C |
7090 | string notation. */ | |
7091 | ||
7092 | static void | |
fba45db2 | 7093 | print_packet (char *buf) |
c906108c SS |
7094 | { |
7095 | puts_filtered ("\""); | |
43e526b9 | 7096 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7097 | puts_filtered ("\""); |
7098 | } | |
7099 | ||
7100 | int | |
fba45db2 | 7101 | putpkt (char *buf) |
c906108c SS |
7102 | { |
7103 | return putpkt_binary (buf, strlen (buf)); | |
7104 | } | |
7105 | ||
7106 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7107 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7108 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7109 | and for a possible /0 if we are debugging (remote_debug) and want |
7110 | to print the sent packet as a string. */ | |
c906108c SS |
7111 | |
7112 | static int | |
fba45db2 | 7113 | putpkt_binary (char *buf, int cnt) |
c906108c | 7114 | { |
2d717e4f | 7115 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7116 | int i; |
7117 | unsigned char csum = 0; | |
11cf8741 | 7118 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7119 | |
c906108c SS |
7120 | int ch; |
7121 | int tcount = 0; | |
7122 | char *p; | |
dd61ec5c | 7123 | char *message; |
c906108c | 7124 | |
e24a49d8 PA |
7125 | /* Catch cases like trying to read memory or listing threads while |
7126 | we're waiting for a stop reply. The remote server wouldn't be | |
7127 | ready to handle this request, so we'd hang and timeout. We don't | |
7128 | have to worry about this in synchronous mode, because in that | |
7129 | case it's not possible to issue a command while the target is | |
74531fed PA |
7130 | running. This is not a problem in non-stop mode, because in that |
7131 | case, the stub is always ready to process serial input. */ | |
7132 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7133 | error (_("Cannot execute this command while the target is running.")); |
7134 | ||
2d717e4f DJ |
7135 | /* We're sending out a new packet. Make sure we don't look at a |
7136 | stale cached response. */ | |
7137 | rs->cached_wait_status = 0; | |
7138 | ||
c906108c SS |
7139 | /* Copy the packet into buffer BUF2, encapsulating it |
7140 | and giving it a checksum. */ | |
7141 | ||
c906108c SS |
7142 | p = buf2; |
7143 | *p++ = '$'; | |
7144 | ||
7145 | for (i = 0; i < cnt; i++) | |
7146 | { | |
7147 | csum += buf[i]; | |
7148 | *p++ = buf[i]; | |
7149 | } | |
7150 | *p++ = '#'; | |
7151 | *p++ = tohex ((csum >> 4) & 0xf); | |
7152 | *p++ = tohex (csum & 0xf); | |
7153 | ||
7154 | /* Send it over and over until we get a positive ack. */ | |
7155 | ||
7156 | while (1) | |
7157 | { | |
7158 | int started_error_output = 0; | |
7159 | ||
7160 | if (remote_debug) | |
7161 | { | |
6e5abd65 PA |
7162 | struct cleanup *old_chain; |
7163 | char *str; | |
7164 | ||
c906108c | 7165 | *p = '\0'; |
6e5abd65 PA |
7166 | str = escape_buffer (buf2, p - buf2); |
7167 | old_chain = make_cleanup (xfree, str); | |
7168 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7169 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7170 | do_cleanups (old_chain); |
c906108c | 7171 | } |
c33e31fd | 7172 | remote_serial_write (buf2, p - buf2); |
c906108c | 7173 | |
a6f3e723 SL |
7174 | /* If this is a no acks version of the remote protocol, send the |
7175 | packet and move on. */ | |
7176 | if (rs->noack_mode) | |
7177 | break; | |
7178 | ||
74531fed PA |
7179 | /* Read until either a timeout occurs (-2) or '+' is read. |
7180 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7181 | while (1) |
7182 | { | |
7183 | ch = readchar (remote_timeout); | |
7184 | ||
c5aa993b | 7185 | if (remote_debug) |
c906108c SS |
7186 | { |
7187 | switch (ch) | |
7188 | { | |
7189 | case '+': | |
1216fa2c | 7190 | case '-': |
c906108c SS |
7191 | case SERIAL_TIMEOUT: |
7192 | case '$': | |
74531fed | 7193 | case '%': |
c906108c SS |
7194 | if (started_error_output) |
7195 | { | |
7196 | putchar_unfiltered ('\n'); | |
7197 | started_error_output = 0; | |
7198 | } | |
7199 | } | |
7200 | } | |
7201 | ||
7202 | switch (ch) | |
7203 | { | |
7204 | case '+': | |
7205 | if (remote_debug) | |
0f71a2f6 | 7206 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7207 | return 1; |
1216fa2c AC |
7208 | case '-': |
7209 | if (remote_debug) | |
7210 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7211 | /* FALLTHROUGH */ |
c906108c | 7212 | case SERIAL_TIMEOUT: |
c5aa993b | 7213 | tcount++; |
c906108c SS |
7214 | if (tcount > 3) |
7215 | return 0; | |
23860348 | 7216 | break; /* Retransmit buffer. */ |
c906108c SS |
7217 | case '$': |
7218 | { | |
40e3f985 | 7219 | if (remote_debug) |
2bc416ba | 7220 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7221 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7222 | /* It's probably an old response sent because an ACK |
7223 | was lost. Gobble up the packet and ack it so it | |
7224 | doesn't get retransmitted when we resend this | |
7225 | packet. */ | |
6d820c5c | 7226 | skip_frame (); |
c33e31fd | 7227 | remote_serial_write ("+", 1); |
23860348 | 7228 | continue; /* Now, go look for +. */ |
c906108c | 7229 | } |
74531fed PA |
7230 | |
7231 | case '%': | |
7232 | { | |
7233 | int val; | |
7234 | ||
7235 | /* If we got a notification, handle it, and go back to looking | |
7236 | for an ack. */ | |
7237 | /* We've found the start of a notification. Now | |
7238 | collect the data. */ | |
7239 | val = read_frame (&rs->buf, &rs->buf_size); | |
7240 | if (val >= 0) | |
7241 | { | |
7242 | if (remote_debug) | |
7243 | { | |
6e5abd65 PA |
7244 | struct cleanup *old_chain; |
7245 | char *str; | |
7246 | ||
7247 | str = escape_buffer (rs->buf, val); | |
7248 | old_chain = make_cleanup (xfree, str); | |
7249 | fprintf_unfiltered (gdb_stdlog, | |
7250 | " Notification received: %s\n", | |
7251 | str); | |
7252 | do_cleanups (old_chain); | |
74531fed | 7253 | } |
5965e028 | 7254 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7255 | /* We're in sync now, rewait for the ack. */ |
7256 | tcount = 0; | |
7257 | } | |
7258 | else | |
7259 | { | |
7260 | if (remote_debug) | |
7261 | { | |
7262 | if (!started_error_output) | |
7263 | { | |
7264 | started_error_output = 1; | |
7265 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7266 | } | |
7267 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7268 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7269 | } | |
7270 | } | |
7271 | continue; | |
7272 | } | |
7273 | /* fall-through */ | |
c906108c SS |
7274 | default: |
7275 | if (remote_debug) | |
7276 | { | |
7277 | if (!started_error_output) | |
7278 | { | |
7279 | started_error_output = 1; | |
0f71a2f6 | 7280 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7281 | } |
0f71a2f6 | 7282 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7283 | } |
7284 | continue; | |
7285 | } | |
23860348 | 7286 | break; /* Here to retransmit. */ |
c906108c SS |
7287 | } |
7288 | ||
7289 | #if 0 | |
7290 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7291 | able to get out next time we call QUIT, without anything as |
7292 | violent as interrupt_query. If we want to provide a way out of | |
7293 | here without getting to the next QUIT, it should be based on | |
7294 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7295 | if (quit_flag) |
7296 | { | |
7297 | quit_flag = 0; | |
7298 | interrupt_query (); | |
7299 | } | |
7300 | #endif | |
7301 | } | |
a6f3e723 | 7302 | return 0; |
c906108c SS |
7303 | } |
7304 | ||
6d820c5c DJ |
7305 | /* Come here after finding the start of a frame when we expected an |
7306 | ack. Do our best to discard the rest of this packet. */ | |
7307 | ||
7308 | static void | |
7309 | skip_frame (void) | |
7310 | { | |
7311 | int c; | |
7312 | ||
7313 | while (1) | |
7314 | { | |
7315 | c = readchar (remote_timeout); | |
7316 | switch (c) | |
7317 | { | |
7318 | case SERIAL_TIMEOUT: | |
7319 | /* Nothing we can do. */ | |
7320 | return; | |
7321 | case '#': | |
7322 | /* Discard the two bytes of checksum and stop. */ | |
7323 | c = readchar (remote_timeout); | |
7324 | if (c >= 0) | |
7325 | c = readchar (remote_timeout); | |
7326 | ||
7327 | return; | |
7328 | case '*': /* Run length encoding. */ | |
7329 | /* Discard the repeat count. */ | |
7330 | c = readchar (remote_timeout); | |
7331 | if (c < 0) | |
7332 | return; | |
7333 | break; | |
7334 | default: | |
7335 | /* A regular character. */ | |
7336 | break; | |
7337 | } | |
7338 | } | |
7339 | } | |
7340 | ||
c906108c | 7341 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7342 | into *BUF, verifying the checksum, length, and handling run-length |
7343 | compression. NUL terminate the buffer. If there is not enough room, | |
7344 | expand *BUF using xrealloc. | |
c906108c | 7345 | |
c2d11a7d JM |
7346 | Returns -1 on error, number of characters in buffer (ignoring the |
7347 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7348 | SERIAL status indications). */ |
c2d11a7d JM |
7349 | |
7350 | static long | |
6d820c5c DJ |
7351 | read_frame (char **buf_p, |
7352 | long *sizeof_buf) | |
c906108c SS |
7353 | { |
7354 | unsigned char csum; | |
c2d11a7d | 7355 | long bc; |
c906108c | 7356 | int c; |
6d820c5c | 7357 | char *buf = *buf_p; |
a6f3e723 | 7358 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7359 | |
7360 | csum = 0; | |
c2d11a7d | 7361 | bc = 0; |
c906108c SS |
7362 | |
7363 | while (1) | |
7364 | { | |
7365 | c = readchar (remote_timeout); | |
c906108c SS |
7366 | switch (c) |
7367 | { | |
7368 | case SERIAL_TIMEOUT: | |
7369 | if (remote_debug) | |
0f71a2f6 | 7370 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7371 | return -1; |
c906108c SS |
7372 | case '$': |
7373 | if (remote_debug) | |
0f71a2f6 JM |
7374 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7375 | gdb_stdlog); | |
23860348 | 7376 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7377 | case '#': |
7378 | { | |
7379 | unsigned char pktcsum; | |
e1b09194 AC |
7380 | int check_0 = 0; |
7381 | int check_1 = 0; | |
c906108c | 7382 | |
c2d11a7d | 7383 | buf[bc] = '\0'; |
c906108c | 7384 | |
e1b09194 AC |
7385 | check_0 = readchar (remote_timeout); |
7386 | if (check_0 >= 0) | |
7387 | check_1 = readchar (remote_timeout); | |
802188a7 | 7388 | |
e1b09194 AC |
7389 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7390 | { | |
7391 | if (remote_debug) | |
2bc416ba | 7392 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7393 | gdb_stdlog); |
e1b09194 AC |
7394 | return -1; |
7395 | } | |
7396 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7397 | { |
7398 | if (remote_debug) | |
2bc416ba | 7399 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7400 | gdb_stdlog); |
40e3f985 FN |
7401 | return -1; |
7402 | } | |
c906108c | 7403 | |
a6f3e723 SL |
7404 | /* Don't recompute the checksum; with no ack packets we |
7405 | don't have any way to indicate a packet retransmission | |
7406 | is necessary. */ | |
7407 | if (rs->noack_mode) | |
7408 | return bc; | |
7409 | ||
e1b09194 | 7410 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7411 | if (csum == pktcsum) |
c2d11a7d | 7412 | return bc; |
c906108c | 7413 | |
c5aa993b | 7414 | if (remote_debug) |
c906108c | 7415 | { |
6e5abd65 PA |
7416 | struct cleanup *old_chain; |
7417 | char *str; | |
7418 | ||
7419 | str = escape_buffer (buf, bc); | |
7420 | old_chain = make_cleanup (xfree, str); | |
7421 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7422 | "Bad checksum, sentsum=0x%x, " |
7423 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7424 | pktcsum, csum, str); |
7425 | do_cleanups (old_chain); | |
c906108c | 7426 | } |
c2d11a7d | 7427 | /* Number of characters in buffer ignoring trailing |
23860348 | 7428 | NULL. */ |
c2d11a7d | 7429 | return -1; |
c906108c | 7430 | } |
23860348 | 7431 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7432 | { |
7433 | int repeat; | |
c906108c | 7434 | |
a744cf53 | 7435 | csum += c; |
b4501125 AC |
7436 | c = readchar (remote_timeout); |
7437 | csum += c; | |
23860348 | 7438 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7439 | |
23860348 | 7440 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7441 | |
6d820c5c | 7442 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7443 | { |
6d820c5c DJ |
7444 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7445 | { | |
7446 | /* Make some more room in the buffer. */ | |
7447 | *sizeof_buf += repeat; | |
7448 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7449 | buf = *buf_p; | |
7450 | } | |
7451 | ||
c2d11a7d JM |
7452 | memset (&buf[bc], buf[bc - 1], repeat); |
7453 | bc += repeat; | |
c2c6d25f JM |
7454 | continue; |
7455 | } | |
7456 | ||
c2d11a7d | 7457 | buf[bc] = '\0'; |
6d820c5c | 7458 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7459 | return -1; |
c2c6d25f | 7460 | } |
c906108c | 7461 | default: |
6d820c5c | 7462 | if (bc >= *sizeof_buf - 1) |
c906108c | 7463 | { |
6d820c5c DJ |
7464 | /* Make some more room in the buffer. */ |
7465 | *sizeof_buf *= 2; | |
7466 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7467 | buf = *buf_p; | |
c906108c SS |
7468 | } |
7469 | ||
6d820c5c DJ |
7470 | buf[bc++] = c; |
7471 | csum += c; | |
7472 | continue; | |
c906108c SS |
7473 | } |
7474 | } | |
7475 | } | |
7476 | ||
7477 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7478 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7479 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7480 | rather than timing out; this is used (in synchronous mode) to wait | |
7481 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7482 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7483 | don't have to change all the calls to getpkt to deal with the | |
7484 | return value, because at the moment I don't know what the right | |
23860348 | 7485 | thing to do it for those. */ |
c906108c | 7486 | void |
6d820c5c DJ |
7487 | getpkt (char **buf, |
7488 | long *sizeof_buf, | |
c2d11a7d | 7489 | int forever) |
d9fcf2fb JM |
7490 | { |
7491 | int timed_out; | |
7492 | ||
7493 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7494 | } | |
7495 | ||
7496 | ||
7497 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7498 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7499 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7500 | rather than timing out; this is used (in synchronous mode) to wait | |
7501 | for a target that is is executing user code to stop. If FOREVER == | |
7502 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7503 | indication of this to the caller. Otherwise return the number of |
7504 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7505 | enough reason to return to the caller. *IS_NOTIF is an output |
7506 | boolean that indicates whether *BUF holds a notification or not | |
7507 | (a regular packet). */ | |
74531fed | 7508 | |
3172dc30 | 7509 | static int |
74531fed | 7510 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7511 | int expecting_notif, int *is_notif) |
c906108c | 7512 | { |
2d717e4f | 7513 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7514 | int c; |
7515 | int tries; | |
7516 | int timeout; | |
df4b58fe | 7517 | int val = -1; |
c906108c | 7518 | |
2d717e4f DJ |
7519 | /* We're reading a new response. Make sure we don't look at a |
7520 | previously cached response. */ | |
7521 | rs->cached_wait_status = 0; | |
7522 | ||
6d820c5c | 7523 | strcpy (*buf, "timeout"); |
c906108c SS |
7524 | |
7525 | if (forever) | |
74531fed PA |
7526 | timeout = watchdog > 0 ? watchdog : -1; |
7527 | else if (expecting_notif) | |
7528 | timeout = 0; /* There should already be a char in the buffer. If | |
7529 | not, bail out. */ | |
c906108c SS |
7530 | else |
7531 | timeout = remote_timeout; | |
7532 | ||
7533 | #define MAX_TRIES 3 | |
7534 | ||
74531fed PA |
7535 | /* Process any number of notifications, and then return when |
7536 | we get a packet. */ | |
7537 | for (;;) | |
c906108c | 7538 | { |
d9c43928 | 7539 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7540 | times. */ |
7541 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7542 | { |
74531fed PA |
7543 | /* This can loop forever if the remote side sends us |
7544 | characters continuously, but if it pauses, we'll get | |
7545 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7546 | we'll count that as a retry. | |
7547 | ||
7548 | Note that even when forever is set, we will only wait | |
7549 | forever prior to the start of a packet. After that, we | |
7550 | expect characters to arrive at a brisk pace. They should | |
7551 | show up within remote_timeout intervals. */ | |
7552 | do | |
7553 | c = readchar (timeout); | |
7554 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7555 | |
7556 | if (c == SERIAL_TIMEOUT) | |
7557 | { | |
74531fed PA |
7558 | if (expecting_notif) |
7559 | return -1; /* Don't complain, it's normal to not get | |
7560 | anything in this case. */ | |
7561 | ||
23860348 | 7562 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7563 | { |
2acceee2 | 7564 | QUIT; |
78a095c3 | 7565 | remote_unpush_target (); |
598d3636 JK |
7566 | throw_error (TARGET_CLOSE_ERROR, |
7567 | _("Watchdog timeout has expired. " | |
7568 | "Target detached.")); | |
c906108c | 7569 | } |
c906108c | 7570 | if (remote_debug) |
0f71a2f6 | 7571 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7572 | } |
74531fed PA |
7573 | else |
7574 | { | |
7575 | /* We've found the start of a packet or notification. | |
7576 | Now collect the data. */ | |
7577 | val = read_frame (buf, sizeof_buf); | |
7578 | if (val >= 0) | |
7579 | break; | |
7580 | } | |
7581 | ||
c33e31fd | 7582 | remote_serial_write ("-", 1); |
c906108c | 7583 | } |
c906108c | 7584 | |
74531fed PA |
7585 | if (tries > MAX_TRIES) |
7586 | { | |
7587 | /* We have tried hard enough, and just can't receive the | |
7588 | packet/notification. Give up. */ | |
7589 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7590 | |
74531fed PA |
7591 | /* Skip the ack char if we're in no-ack mode. */ |
7592 | if (!rs->noack_mode) | |
c33e31fd | 7593 | remote_serial_write ("+", 1); |
74531fed PA |
7594 | return -1; |
7595 | } | |
c906108c | 7596 | |
74531fed PA |
7597 | /* If we got an ordinary packet, return that to our caller. */ |
7598 | if (c == '$') | |
c906108c SS |
7599 | { |
7600 | if (remote_debug) | |
43e526b9 | 7601 | { |
6e5abd65 PA |
7602 | struct cleanup *old_chain; |
7603 | char *str; | |
7604 | ||
7605 | str = escape_buffer (*buf, val); | |
7606 | old_chain = make_cleanup (xfree, str); | |
7607 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7608 | do_cleanups (old_chain); | |
43e526b9 | 7609 | } |
a6f3e723 SL |
7610 | |
7611 | /* Skip the ack char if we're in no-ack mode. */ | |
7612 | if (!rs->noack_mode) | |
c33e31fd | 7613 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7614 | if (is_notif != NULL) |
7615 | *is_notif = 0; | |
0876f84a | 7616 | return val; |
c906108c SS |
7617 | } |
7618 | ||
74531fed PA |
7619 | /* If we got a notification, handle it, and go back to looking |
7620 | for a packet. */ | |
7621 | else | |
7622 | { | |
7623 | gdb_assert (c == '%'); | |
7624 | ||
7625 | if (remote_debug) | |
7626 | { | |
6e5abd65 PA |
7627 | struct cleanup *old_chain; |
7628 | char *str; | |
7629 | ||
7630 | str = escape_buffer (*buf, val); | |
7631 | old_chain = make_cleanup (xfree, str); | |
7632 | fprintf_unfiltered (gdb_stdlog, | |
7633 | " Notification received: %s\n", | |
7634 | str); | |
7635 | do_cleanups (old_chain); | |
74531fed | 7636 | } |
fee9eda9 YQ |
7637 | if (is_notif != NULL) |
7638 | *is_notif = 1; | |
c906108c | 7639 | |
5965e028 | 7640 | handle_notification (rs->notif_state, *buf); |
c906108c | 7641 | |
74531fed | 7642 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7643 | |
74531fed | 7644 | if (expecting_notif) |
fee9eda9 | 7645 | return val; |
74531fed PA |
7646 | } |
7647 | } | |
7648 | } | |
7649 | ||
7650 | static int | |
7651 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7652 | { | |
fee9eda9 | 7653 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7654 | } |
7655 | ||
7656 | static int | |
fee9eda9 YQ |
7657 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7658 | int *is_notif) | |
74531fed | 7659 | { |
fee9eda9 YQ |
7660 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7661 | is_notif); | |
c906108c | 7662 | } |
74531fed | 7663 | |
c906108c SS |
7664 | \f |
7665 | static void | |
7d85a9c0 | 7666 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7667 | { |
c90a6fb7 | 7668 | volatile struct gdb_exception ex; |
0fdf84ca PA |
7669 | |
7670 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7671 | aren't on speaking terms with the remote system. */ |
0fdf84ca PA |
7672 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
7673 | { | |
7674 | putpkt ("k"); | |
7675 | } | |
7676 | if (ex.reason < 0) | |
7677 | { | |
7678 | if (ex.error == TARGET_CLOSE_ERROR) | |
7679 | { | |
7680 | /* If we got an (EOF) error that caused the target | |
7681 | to go away, then we're done, that's what we wanted. | |
7682 | "k" is susceptible to cause a premature EOF, given | |
7683 | that the remote server isn't actually required to | |
7684 | reply to "k", and it can happen that it doesn't | |
7685 | even get to reply ACK to the "k". */ | |
7686 | return; | |
7687 | } | |
7688 | ||
7689 | /* Otherwise, something went wrong. We didn't actually kill | |
7690 | the target. Just propagate the exception, and let the | |
7691 | user or higher layers decide what to do. */ | |
7692 | throw_exception (ex); | |
7693 | } | |
43ff13b4 | 7694 | |
0fdf84ca PA |
7695 | /* We've killed the remote end, we get to mourn it. Since this is |
7696 | target remote, single-process, mourning the inferior also | |
7697 | unpushes remote_ops. */ | |
43ff13b4 JM |
7698 | target_mourn_inferior (); |
7699 | } | |
7700 | ||
82f73884 PA |
7701 | static int |
7702 | remote_vkill (int pid, struct remote_state *rs) | |
7703 | { | |
4082afcc | 7704 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
7705 | return -1; |
7706 | ||
7707 | /* Tell the remote target to detach. */ | |
bba74b36 | 7708 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7709 | putpkt (rs->buf); |
7710 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7711 | ||
4082afcc PA |
7712 | switch (packet_ok (rs->buf, |
7713 | &remote_protocol_packets[PACKET_vKill])) | |
7714 | { | |
7715 | case PACKET_OK: | |
7716 | return 0; | |
7717 | case PACKET_ERROR: | |
7718 | return 1; | |
7719 | case PACKET_UNKNOWN: | |
7720 | return -1; | |
7721 | default: | |
7722 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7723 | } | |
82f73884 PA |
7724 | } |
7725 | ||
7726 | static void | |
7d85a9c0 | 7727 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7728 | { |
7729 | int res; | |
7730 | int pid = ptid_get_pid (inferior_ptid); | |
7731 | struct remote_state *rs = get_remote_state (); | |
7732 | ||
7733 | res = remote_vkill (pid, rs); | |
901f9912 | 7734 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7735 | { |
7736 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7737 | to specify the pid. */ | |
7738 | ||
7739 | putpkt ("k"); | |
7740 | #if 0 | |
7741 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7742 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7743 | res = 1; | |
7744 | #else | |
7745 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7746 | we do or not. For the existing stubs, kill is a noop. */ | |
7747 | res = 0; | |
7748 | #endif | |
7749 | } | |
7750 | ||
7751 | if (res != 0) | |
7752 | error (_("Can't kill process")); | |
7753 | ||
82f73884 PA |
7754 | target_mourn_inferior (); |
7755 | } | |
7756 | ||
c906108c | 7757 | static void |
136d6dae | 7758 | remote_mourn (struct target_ops *ops) |
c906108c | 7759 | { |
136d6dae | 7760 | remote_mourn_1 (ops); |
c906108c SS |
7761 | } |
7762 | ||
c906108c SS |
7763 | /* Worker function for remote_mourn. */ |
7764 | static void | |
fba45db2 | 7765 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7766 | { |
7767 | unpush_target (target); | |
ce5ce7ed | 7768 | |
8a2492ee PA |
7769 | /* remote_close takes care of doing most of the clean up. */ |
7770 | generic_mourn_inferior (); | |
c906108c SS |
7771 | } |
7772 | ||
2d717e4f DJ |
7773 | static void |
7774 | extended_remote_mourn_1 (struct target_ops *target) | |
7775 | { | |
7776 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7777 | |
e24a49d8 PA |
7778 | /* In case we got here due to an error, but we're going to stay |
7779 | connected. */ | |
7780 | rs->waiting_for_stop_reply = 0; | |
7781 | ||
dc1981d7 PA |
7782 | /* If the current general thread belonged to the process we just |
7783 | detached from or has exited, the remote side current general | |
7784 | thread becomes undefined. Considering a case like this: | |
7785 | ||
7786 | - We just got here due to a detach. | |
7787 | - The process that we're detaching from happens to immediately | |
7788 | report a global breakpoint being hit in non-stop mode, in the | |
7789 | same thread we had selected before. | |
7790 | - GDB attaches to this process again. | |
7791 | - This event happens to be the next event we handle. | |
7792 | ||
7793 | GDB would consider that the current general thread didn't need to | |
7794 | be set on the stub side (with Hg), since for all it knew, | |
7795 | GENERAL_THREAD hadn't changed. | |
7796 | ||
7797 | Notice that although in all-stop mode, the remote server always | |
7798 | sets the current thread to the thread reporting the stop event, | |
7799 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7800 | not* change the current thread when reporting a breakpoint hit, | |
7801 | due to the decoupling of event reporting and event handling. | |
7802 | ||
7803 | To keep things simple, we always invalidate our notion of the | |
7804 | current thread. */ | |
47f8a51d | 7805 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 7806 | |
2d717e4f DJ |
7807 | /* Unlike "target remote", we do not want to unpush the target; then |
7808 | the next time the user says "run", we won't be connected. */ | |
7809 | ||
48aa3c27 PA |
7810 | /* Call common code to mark the inferior as not running. */ |
7811 | generic_mourn_inferior (); | |
7812 | ||
d729566a | 7813 | if (!have_inferiors ()) |
2d717e4f | 7814 | { |
82f73884 PA |
7815 | if (!remote_multi_process_p (rs)) |
7816 | { | |
7817 | /* Check whether the target is running now - some remote stubs | |
7818 | automatically restart after kill. */ | |
7819 | putpkt ("?"); | |
7820 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7821 | ||
7822 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7823 | { | |
3e43a32a MS |
7824 | /* Assume that the target has been restarted. Set |
7825 | inferior_ptid so that bits of core GDB realizes | |
7826 | there's something here, e.g., so that the user can | |
7827 | say "kill" again. */ | |
82f73884 PA |
7828 | inferior_ptid = magic_null_ptid; |
7829 | } | |
82f73884 | 7830 | } |
2d717e4f DJ |
7831 | } |
7832 | } | |
c906108c SS |
7833 | |
7834 | static void | |
136d6dae | 7835 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7836 | { |
136d6dae | 7837 | extended_remote_mourn_1 (ops); |
2d717e4f | 7838 | } |
c906108c | 7839 | |
03583c20 | 7840 | static int |
2bfc0540 | 7841 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 7842 | { |
4082afcc | 7843 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
7844 | } |
7845 | ||
7846 | static void | |
7847 | extended_remote_disable_randomization (int val) | |
7848 | { | |
7849 | struct remote_state *rs = get_remote_state (); | |
7850 | char *reply; | |
7851 | ||
bba74b36 YQ |
7852 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7853 | val); | |
03583c20 UW |
7854 | putpkt (rs->buf); |
7855 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7856 | if (*reply == '\0') | |
7857 | error (_("Target does not support QDisableRandomization.")); | |
7858 | if (strcmp (reply, "OK") != 0) | |
7859 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7860 | } | |
7861 | ||
2d717e4f DJ |
7862 | static int |
7863 | extended_remote_run (char *args) | |
7864 | { | |
7865 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7866 | int len; |
c906108c | 7867 | |
2d717e4f DJ |
7868 | /* If the user has disabled vRun support, or we have detected that |
7869 | support is not available, do not try it. */ | |
4082afcc | 7870 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 7871 | return -1; |
424163ea | 7872 | |
2d717e4f DJ |
7873 | strcpy (rs->buf, "vRun;"); |
7874 | len = strlen (rs->buf); | |
c906108c | 7875 | |
2d717e4f DJ |
7876 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7877 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
7878 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
7879 | strlen (remote_exec_file)); | |
2d717e4f | 7880 | |
d1a41061 | 7881 | gdb_assert (args != NULL); |
2d717e4f DJ |
7882 | if (*args) |
7883 | { | |
7884 | struct cleanup *back_to; | |
7885 | int i; | |
7886 | char **argv; | |
7887 | ||
d1a41061 | 7888 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7889 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7890 | for (i = 0; argv[i] != NULL; i++) | |
7891 | { | |
7892 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7893 | error (_("Argument list too long for run packet")); | |
7894 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
7895 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
7896 | strlen (argv[i])); | |
2d717e4f DJ |
7897 | } |
7898 | do_cleanups (back_to); | |
7899 | } | |
7900 | ||
7901 | rs->buf[len++] = '\0'; | |
7902 | ||
7903 | putpkt (rs->buf); | |
7904 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7905 | ||
4082afcc | 7906 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 7907 | { |
4082afcc | 7908 | case PACKET_OK: |
3405876a | 7909 | /* We have a wait response. All is well. */ |
2d717e4f | 7910 | return 0; |
4082afcc PA |
7911 | case PACKET_UNKNOWN: |
7912 | return -1; | |
7913 | case PACKET_ERROR: | |
2d717e4f DJ |
7914 | if (remote_exec_file[0] == '\0') |
7915 | error (_("Running the default executable on the remote target failed; " | |
7916 | "try \"set remote exec-file\"?")); | |
7917 | else | |
7918 | error (_("Running \"%s\" on the remote target failed"), | |
7919 | remote_exec_file); | |
4082afcc PA |
7920 | default: |
7921 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 7922 | } |
c906108c SS |
7923 | } |
7924 | ||
2d717e4f DJ |
7925 | /* In the extended protocol we want to be able to do things like |
7926 | "run" and have them basically work as expected. So we need | |
7927 | a special create_inferior function. We support changing the | |
7928 | executable file and the command line arguments, but not the | |
7929 | environment. */ | |
7930 | ||
43ff13b4 | 7931 | static void |
77a19445 TT |
7932 | extended_remote_create_inferior (struct target_ops *ops, |
7933 | char *exec_file, char *args, | |
7934 | char **env, int from_tty) | |
43ff13b4 | 7935 | { |
3405876a PA |
7936 | int run_worked; |
7937 | char *stop_reply; | |
7938 | struct remote_state *rs = get_remote_state (); | |
7939 | ||
43ff13b4 | 7940 | /* If running asynchronously, register the target file descriptor |
23860348 | 7941 | with the event loop. */ |
75c99385 | 7942 | if (target_can_async_p ()) |
2acceee2 | 7943 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7944 | |
03583c20 | 7945 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 7946 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
7947 | extended_remote_disable_randomization (disable_randomization); |
7948 | ||
43ff13b4 | 7949 | /* Now restart the remote server. */ |
3405876a PA |
7950 | run_worked = extended_remote_run (args) != -1; |
7951 | if (!run_worked) | |
2d717e4f DJ |
7952 | { |
7953 | /* vRun was not supported. Fail if we need it to do what the | |
7954 | user requested. */ | |
7955 | if (remote_exec_file[0]) | |
7956 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7957 | if (args[0]) | |
7958 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7959 | |
2d717e4f DJ |
7960 | /* Fall back to "R". */ |
7961 | extended_remote_restart (); | |
7962 | } | |
424163ea | 7963 | |
6c95b8df PA |
7964 | if (!have_inferiors ()) |
7965 | { | |
7966 | /* Clean up from the last time we ran, before we mark the target | |
7967 | running again. This will mark breakpoints uninserted, and | |
7968 | get_offsets may insert breakpoints. */ | |
7969 | init_thread_list (); | |
7970 | init_wait_for_inferior (); | |
7971 | } | |
45280a52 | 7972 | |
3405876a PA |
7973 | /* vRun's success return is a stop reply. */ |
7974 | stop_reply = run_worked ? rs->buf : NULL; | |
7975 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 7976 | |
2d717e4f DJ |
7977 | /* Get updated offsets, if the stub uses qOffsets. */ |
7978 | get_offsets (); | |
2d717e4f | 7979 | } |
c906108c | 7980 | \f |
c5aa993b | 7981 | |
b775012e LM |
7982 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7983 | the list of conditions (in agent expression bytecode format), if any, the | |
7984 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 7985 | started from BUF and ended at BUF_END. */ |
b775012e LM |
7986 | |
7987 | static int | |
7988 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
7989 | struct bp_target_info *bp_tgt, char *buf, |
7990 | char *buf_end) | |
b775012e LM |
7991 | { |
7992 | struct agent_expr *aexpr = NULL; | |
7993 | int i, ix; | |
7994 | char *pkt; | |
7995 | char *buf_start = buf; | |
7996 | ||
7997 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7998 | return 0; | |
7999 | ||
8000 | buf += strlen (buf); | |
bba74b36 | 8001 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8002 | buf++; |
8003 | ||
8004 | /* Send conditions to the target and free the vector. */ | |
8005 | for (ix = 0; | |
8006 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8007 | ix++) | |
8008 | { | |
bba74b36 | 8009 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8010 | buf += strlen (buf); |
8011 | for (i = 0; i < aexpr->len; ++i) | |
8012 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8013 | *buf = '\0'; | |
8014 | } | |
b775012e LM |
8015 | return 0; |
8016 | } | |
8017 | ||
d3ce09f5 SS |
8018 | static void |
8019 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8020 | struct bp_target_info *bp_tgt, char *buf) | |
8021 | { | |
8022 | struct agent_expr *aexpr = NULL; | |
8023 | int i, ix; | |
8024 | ||
8025 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8026 | return; | |
8027 | ||
8028 | buf += strlen (buf); | |
8029 | ||
8030 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8031 | buf += strlen (buf); | |
8032 | ||
8033 | /* Concatenate all the agent expressions that are commands into the | |
8034 | cmds parameter. */ | |
8035 | for (ix = 0; | |
8036 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8037 | ix++) | |
8038 | { | |
8039 | sprintf (buf, "X%x,", aexpr->len); | |
8040 | buf += strlen (buf); | |
8041 | for (i = 0; i < aexpr->len; ++i) | |
8042 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8043 | *buf = '\0'; | |
8044 | } | |
d3ce09f5 SS |
8045 | } |
8046 | ||
8181d85f DJ |
8047 | /* Insert a breakpoint. On targets that have software breakpoint |
8048 | support, we ask the remote target to do the work; on targets | |
8049 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8050 | |
8051 | static int | |
3db08215 MM |
8052 | remote_insert_breakpoint (struct target_ops *ops, |
8053 | struct gdbarch *gdbarch, | |
a6d9a66e | 8054 | struct bp_target_info *bp_tgt) |
c906108c | 8055 | { |
d471ea57 AC |
8056 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8057 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8058 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8059 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8060 | |
4082afcc | 8061 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8062 | { |
7c0f6dcc | 8063 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8064 | struct remote_state *rs; |
bba74b36 | 8065 | char *p, *endbuf; |
7c0f6dcc | 8066 | int bpsize; |
b775012e | 8067 | struct condition_list *cond = NULL; |
4fff2411 | 8068 | |
28439a30 PA |
8069 | /* Make sure the remote is pointing at the right process, if |
8070 | necessary. */ | |
8071 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8072 | set_general_process (); | |
8073 | ||
a1dcb23a | 8074 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8075 | |
8076 | rs = get_remote_state (); | |
8077 | p = rs->buf; | |
bba74b36 | 8078 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8079 | |
96baa820 JM |
8080 | *(p++) = 'Z'; |
8081 | *(p++) = '0'; | |
8082 | *(p++) = ','; | |
7c0f6dcc | 8083 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8084 | p += hexnumstr (p, addr); |
bba74b36 | 8085 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8086 | |
efcc2da7 | 8087 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8088 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8089 | |
78eff0ec | 8090 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8091 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8092 | ||
6d820c5c DJ |
8093 | putpkt (rs->buf); |
8094 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8095 | |
6d820c5c | 8096 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8097 | { |
d471ea57 AC |
8098 | case PACKET_ERROR: |
8099 | return -1; | |
8100 | case PACKET_OK: | |
7c0f6dcc JL |
8101 | bp_tgt->placed_address = addr; |
8102 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8103 | return 0; |
8104 | case PACKET_UNKNOWN: | |
8105 | break; | |
96baa820 JM |
8106 | } |
8107 | } | |
c906108c | 8108 | |
0000e5cc PA |
8109 | /* If this breakpoint has target-side commands but this stub doesn't |
8110 | support Z0 packets, throw error. */ | |
8111 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8112 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8113 | Target doesn't support breakpoints that have target side commands.")); | |
8114 | ||
3db08215 | 8115 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8116 | } |
8117 | ||
8118 | static int | |
3db08215 MM |
8119 | remote_remove_breakpoint (struct target_ops *ops, |
8120 | struct gdbarch *gdbarch, | |
a6d9a66e | 8121 | struct bp_target_info *bp_tgt) |
c906108c | 8122 | { |
8181d85f | 8123 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8124 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8125 | |
4082afcc | 8126 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8127 | { |
6d820c5c | 8128 | char *p = rs->buf; |
bba74b36 | 8129 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8130 | |
28439a30 PA |
8131 | /* Make sure the remote is pointing at the right process, if |
8132 | necessary. */ | |
8133 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8134 | set_general_process (); | |
8135 | ||
96baa820 JM |
8136 | *(p++) = 'z'; |
8137 | *(p++) = '0'; | |
8138 | *(p++) = ','; | |
8139 | ||
8181d85f DJ |
8140 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8141 | p += hexnumstr (p, addr); | |
bba74b36 | 8142 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8143 | |
6d820c5c DJ |
8144 | putpkt (rs->buf); |
8145 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8146 | |
6d820c5c | 8147 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8148 | } |
8149 | ||
3db08215 | 8150 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8151 | } |
8152 | ||
d471ea57 AC |
8153 | static int |
8154 | watchpoint_to_Z_packet (int type) | |
8155 | { | |
8156 | switch (type) | |
8157 | { | |
8158 | case hw_write: | |
bb858e6a | 8159 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8160 | break; |
8161 | case hw_read: | |
bb858e6a | 8162 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8163 | break; |
8164 | case hw_access: | |
bb858e6a | 8165 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8166 | break; |
8167 | default: | |
8e65ff28 | 8168 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8169 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8170 | } |
8171 | } | |
8172 | ||
3c3bea1c | 8173 | static int |
7bb99c53 TT |
8174 | remote_insert_watchpoint (struct target_ops *self, |
8175 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8176 | struct expression *cond) |
96baa820 | 8177 | { |
d01949b6 | 8178 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8179 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8180 | char *p; |
d471ea57 | 8181 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8182 | |
4082afcc | 8183 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8184 | return 1; |
802188a7 | 8185 | |
28439a30 PA |
8186 | /* Make sure the remote is pointing at the right process, if |
8187 | necessary. */ | |
8188 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8189 | set_general_process (); | |
8190 | ||
bba74b36 | 8191 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8192 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8193 | addr = remote_address_masked (addr); |
8194 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8195 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8196 | |
6d820c5c DJ |
8197 | putpkt (rs->buf); |
8198 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8199 | |
6d820c5c | 8200 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8201 | { |
8202 | case PACKET_ERROR: | |
d471ea57 | 8203 | return -1; |
85d721b8 PA |
8204 | case PACKET_UNKNOWN: |
8205 | return 1; | |
d471ea57 AC |
8206 | case PACKET_OK: |
8207 | return 0; | |
8208 | } | |
8e65ff28 | 8209 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8210 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8211 | } |
8212 | ||
283002cf MR |
8213 | static int |
8214 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8215 | CORE_ADDR start, int length) | |
8216 | { | |
8217 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8218 | ||
8219 | return diff < length; | |
8220 | } | |
8221 | ||
d471ea57 | 8222 | |
3c3bea1c | 8223 | static int |
11b5219a TT |
8224 | remote_remove_watchpoint (struct target_ops *self, |
8225 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8226 | struct expression *cond) |
96baa820 | 8227 | { |
d01949b6 | 8228 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8229 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8230 | char *p; |
d471ea57 AC |
8231 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8232 | ||
4082afcc | 8233 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8234 | return -1; |
802188a7 | 8235 | |
28439a30 PA |
8236 | /* Make sure the remote is pointing at the right process, if |
8237 | necessary. */ | |
8238 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8239 | set_general_process (); | |
8240 | ||
bba74b36 | 8241 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8242 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8243 | addr = remote_address_masked (addr); |
8244 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8245 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8246 | putpkt (rs->buf); |
8247 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8248 | |
6d820c5c | 8249 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8250 | { |
8251 | case PACKET_ERROR: | |
8252 | case PACKET_UNKNOWN: | |
8253 | return -1; | |
8254 | case PACKET_OK: | |
8255 | return 0; | |
8256 | } | |
8e65ff28 | 8257 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8258 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8259 | } |
8260 | ||
3c3bea1c | 8261 | |
501eef12 | 8262 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8263 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8264 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8265 | |
480a3f21 | 8266 | static int |
31568a15 TT |
8267 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8268 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8269 | { |
8270 | if (remote_hw_watchpoint_length_limit == 0) | |
8271 | return 0; | |
8272 | else if (remote_hw_watchpoint_length_limit < 0) | |
8273 | return 1; | |
8274 | else if (len <= remote_hw_watchpoint_length_limit) | |
8275 | return 1; | |
8276 | else | |
8277 | return 0; | |
8278 | } | |
8279 | ||
b9362cc7 | 8280 | static int |
5461485a TT |
8281 | remote_check_watch_resources (struct target_ops *self, |
8282 | int type, int cnt, int ot) | |
96baa820 | 8283 | { |
3c3bea1c GS |
8284 | if (type == bp_hardware_breakpoint) |
8285 | { | |
8286 | if (remote_hw_breakpoint_limit == 0) | |
8287 | return 0; | |
501eef12 AC |
8288 | else if (remote_hw_breakpoint_limit < 0) |
8289 | return 1; | |
3c3bea1c GS |
8290 | else if (cnt <= remote_hw_breakpoint_limit) |
8291 | return 1; | |
8292 | } | |
8293 | else | |
8294 | { | |
8295 | if (remote_hw_watchpoint_limit == 0) | |
8296 | return 0; | |
501eef12 AC |
8297 | else if (remote_hw_watchpoint_limit < 0) |
8298 | return 1; | |
3c3bea1c GS |
8299 | else if (ot) |
8300 | return -1; | |
8301 | else if (cnt <= remote_hw_watchpoint_limit) | |
8302 | return 1; | |
8303 | } | |
8304 | return -1; | |
8305 | } | |
8306 | ||
b9362cc7 | 8307 | static int |
6a109b6b | 8308 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8309 | { |
ee154bee TT |
8310 | struct remote_state *rs = get_remote_state (); |
8311 | ||
8312 | return rs->remote_stopped_by_watchpoint_p; | |
3c3bea1c GS |
8313 | } |
8314 | ||
4aa7a7f5 JJ |
8315 | static int |
8316 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8317 | { |
ee154bee | 8318 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8319 | int rc = 0; |
a744cf53 | 8320 | |
6a109b6b | 8321 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8322 | { |
ee154bee | 8323 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8324 | rc = 1; |
8325 | } | |
8326 | ||
8327 | return rc; | |
3c3bea1c GS |
8328 | } |
8329 | ||
8330 | ||
8331 | static int | |
23a26771 | 8332 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8333 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8334 | { |
8181d85f | 8335 | CORE_ADDR addr; |
4fff2411 | 8336 | struct remote_state *rs; |
bba74b36 | 8337 | char *p, *endbuf; |
dd61ec5c | 8338 | char *message; |
802188a7 | 8339 | |
c8189ed1 | 8340 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8341 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8342 | |
a1dcb23a | 8343 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8344 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8345 | |
4082afcc | 8346 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8347 | return -1; |
2bc416ba | 8348 | |
28439a30 PA |
8349 | /* Make sure the remote is pointing at the right process, if |
8350 | necessary. */ | |
8351 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8352 | set_general_process (); | |
8353 | ||
4fff2411 JZ |
8354 | rs = get_remote_state (); |
8355 | p = rs->buf; | |
bba74b36 | 8356 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8357 | |
96baa820 JM |
8358 | *(p++) = 'Z'; |
8359 | *(p++) = '1'; | |
8360 | *(p++) = ','; | |
802188a7 | 8361 | |
8181d85f | 8362 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8363 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8364 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8365 | |
efcc2da7 | 8366 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 8367 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8368 | |
78eff0ec | 8369 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
8370 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
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_Z1])) |
d471ea57 AC |
8376 | { |
8377 | case PACKET_ERROR: | |
dd61ec5c MW |
8378 | if (rs->buf[1] == '.') |
8379 | { | |
8380 | message = strchr (rs->buf + 2, '.'); | |
8381 | if (message) | |
0316657e | 8382 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8383 | } |
8384 | return -1; | |
d471ea57 AC |
8385 | case PACKET_UNKNOWN: |
8386 | return -1; | |
8387 | case PACKET_OK: | |
8388 | return 0; | |
8389 | } | |
8e65ff28 | 8390 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8391 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8392 | } |
8393 | ||
d471ea57 | 8394 | |
802188a7 | 8395 | static int |
a64dc96c | 8396 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8397 | struct bp_target_info *bp_tgt) |
96baa820 | 8398 | { |
8181d85f | 8399 | CORE_ADDR addr; |
d01949b6 | 8400 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8401 | char *p = rs->buf; |
bba74b36 | 8402 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8403 | |
4082afcc | 8404 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8405 | return -1; |
802188a7 | 8406 | |
28439a30 PA |
8407 | /* Make sure the remote is pointing at the right process, if |
8408 | necessary. */ | |
8409 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8410 | set_general_process (); | |
8411 | ||
96baa820 JM |
8412 | *(p++) = 'z'; |
8413 | *(p++) = '1'; | |
8414 | *(p++) = ','; | |
802188a7 | 8415 | |
8181d85f | 8416 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8417 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8418 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8419 | |
6d820c5c DJ |
8420 | putpkt (rs->buf); |
8421 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8422 | |
6d820c5c | 8423 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8424 | { |
8425 | case PACKET_ERROR: | |
8426 | case PACKET_UNKNOWN: | |
8427 | return -1; | |
8428 | case PACKET_OK: | |
8429 | return 0; | |
8430 | } | |
8e65ff28 | 8431 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8432 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8433 | } |
96baa820 | 8434 | |
4a5e7a5b PA |
8435 | /* Verify memory using the "qCRC:" request. */ |
8436 | ||
8437 | static int | |
8438 | remote_verify_memory (struct target_ops *ops, | |
8439 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8440 | { | |
8441 | struct remote_state *rs = get_remote_state (); | |
8442 | unsigned long host_crc, target_crc; | |
8443 | char *tmp; | |
8444 | ||
936d2992 PA |
8445 | /* It doesn't make sense to use qCRC if the remote target is |
8446 | connected but not running. */ | |
8447 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
8448 | { | |
8449 | enum packet_result result; | |
28439a30 | 8450 | |
936d2992 PA |
8451 | /* Make sure the remote is pointing at the right process. */ |
8452 | set_general_process (); | |
4a5e7a5b | 8453 | |
936d2992 PA |
8454 | /* FIXME: assumes lma can fit into long. */ |
8455 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8456 | (long) lma, (long) size); | |
8457 | putpkt (rs->buf); | |
4a5e7a5b | 8458 | |
936d2992 PA |
8459 | /* Be clever; compute the host_crc before waiting for target |
8460 | reply. */ | |
8461 | host_crc = xcrc32 (data, size, 0xffffffff); | |
8462 | ||
8463 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 8464 | |
936d2992 PA |
8465 | result = packet_ok (rs->buf, |
8466 | &remote_protocol_packets[PACKET_qCRC]); | |
8467 | if (result == PACKET_ERROR) | |
8468 | return -1; | |
8469 | else if (result == PACKET_OK) | |
8470 | { | |
8471 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8472 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 8473 | |
936d2992 PA |
8474 | return (host_crc == target_crc); |
8475 | } | |
8476 | } | |
4a5e7a5b | 8477 | |
936d2992 | 8478 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
8479 | } |
8480 | ||
c906108c SS |
8481 | /* compare-sections command |
8482 | ||
8483 | With no arguments, compares each loadable section in the exec bfd | |
8484 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8485 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8486 | |
c906108c | 8487 | static void |
fba45db2 | 8488 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8489 | { |
8490 | asection *s; | |
c906108c | 8491 | struct cleanup *old_chain; |
948f8e3d | 8492 | gdb_byte *sectdata; |
ce359b09 | 8493 | const char *sectname; |
c906108c SS |
8494 | bfd_size_type size; |
8495 | bfd_vma lma; | |
8496 | int matched = 0; | |
8497 | int mismatched = 0; | |
4a5e7a5b | 8498 | int res; |
95cf3b38 | 8499 | int read_only = 0; |
c906108c SS |
8500 | |
8501 | if (!exec_bfd) | |
8a3fe4f8 | 8502 | error (_("command cannot be used without an exec file")); |
c906108c | 8503 | |
28439a30 PA |
8504 | /* Make sure the remote is pointing at the right process. */ |
8505 | set_general_process (); | |
8506 | ||
95cf3b38 DT |
8507 | if (args != NULL && strcmp (args, "-r") == 0) |
8508 | { | |
8509 | read_only = 1; | |
8510 | args = NULL; | |
8511 | } | |
8512 | ||
c5aa993b | 8513 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8514 | { |
8515 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8516 | continue; /* Skip non-loadable section. */ |
c906108c | 8517 | |
95cf3b38 DT |
8518 | if (read_only && (s->flags & SEC_READONLY) == 0) |
8519 | continue; /* Skip writeable sections */ | |
8520 | ||
2c500098 | 8521 | size = bfd_get_section_size (s); |
c906108c | 8522 | if (size == 0) |
0df8b418 | 8523 | continue; /* Skip zero-length section. */ |
c906108c | 8524 | |
ce359b09 | 8525 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8526 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8527 | continue; /* Not the section selected by user. */ |
c906108c | 8528 | |
0df8b418 | 8529 | matched = 1; /* Do this section. */ |
c906108c | 8530 | lma = s->lma; |
c906108c | 8531 | |
c906108c | 8532 | sectdata = xmalloc (size); |
b8c9b27d | 8533 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8534 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8535 | |
4a5e7a5b PA |
8536 | res = target_verify_memory (sectdata, lma, size); |
8537 | ||
8538 | if (res == -1) | |
5af949e3 | 8539 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8540 | paddress (target_gdbarch (), lma), |
8541 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8542 | |
5af949e3 | 8543 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8544 | paddress (target_gdbarch (), lma), |
8545 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8546 | if (res) |
c906108c SS |
8547 | printf_filtered ("matched.\n"); |
8548 | else | |
c5aa993b JM |
8549 | { |
8550 | printf_filtered ("MIS-MATCHED!\n"); | |
8551 | mismatched++; | |
8552 | } | |
c906108c SS |
8553 | |
8554 | do_cleanups (old_chain); | |
8555 | } | |
8556 | if (mismatched > 0) | |
936d2992 | 8557 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 8558 | the loaded file\n")); |
c906108c | 8559 | if (args && !matched) |
a3f17187 | 8560 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8561 | } |
8562 | ||
0e7f50da UW |
8563 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8564 | into remote target. The number of bytes written to the remote | |
8565 | target is returned, or -1 for error. */ | |
8566 | ||
9b409511 | 8567 | static enum target_xfer_status |
0e7f50da UW |
8568 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
8569 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 8570 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
8571 | struct packet_config *packet) |
8572 | { | |
8573 | int i, buf_len; | |
8574 | ULONGEST n; | |
0e7f50da UW |
8575 | struct remote_state *rs = get_remote_state (); |
8576 | int max_size = get_memory_write_packet_size (); | |
8577 | ||
8578 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8579 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8580 | |
8581 | /* Insert header. */ | |
8582 | i = snprintf (rs->buf, max_size, | |
8583 | "qXfer:%s:write:%s:%s:", | |
8584 | object_name, annex ? annex : "", | |
8585 | phex_nz (offset, sizeof offset)); | |
8586 | max_size -= (i + 1); | |
8587 | ||
8588 | /* Escape as much data as fits into rs->buf. */ | |
8589 | buf_len = remote_escape_output | |
bc20a4af | 8590 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8591 | |
8592 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8593 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8594 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8595 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8596 | |
8597 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
8598 | |
8599 | *xfered_len = n; | |
8600 | return TARGET_XFER_OK; | |
0e7f50da UW |
8601 | } |
8602 | ||
0876f84a DJ |
8603 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8604 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8605 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8606 | The number of bytes read may be less than LEN without indicating an | |
8607 | EOF. PACKET is checked and updated to indicate whether the remote | |
8608 | target supports this object. */ | |
8609 | ||
9b409511 | 8610 | static enum target_xfer_status |
0876f84a DJ |
8611 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
8612 | const char *annex, | |
8613 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 8614 | ULONGEST *xfered_len, |
0876f84a DJ |
8615 | struct packet_config *packet) |
8616 | { | |
0876f84a | 8617 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8618 | LONGEST i, n, packet_len; |
8619 | ||
8620 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8621 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8622 | |
8623 | /* Check whether we've cached an end-of-object packet that matches | |
8624 | this request. */ | |
8e88304f | 8625 | if (rs->finished_object) |
0876f84a | 8626 | { |
8e88304f TT |
8627 | if (strcmp (object_name, rs->finished_object) == 0 |
8628 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8629 | && offset == rs->finished_offset) | |
9b409511 YQ |
8630 | return TARGET_XFER_EOF; |
8631 | ||
0876f84a DJ |
8632 | |
8633 | /* Otherwise, we're now reading something different. Discard | |
8634 | the cache. */ | |
8e88304f TT |
8635 | xfree (rs->finished_object); |
8636 | xfree (rs->finished_annex); | |
8637 | rs->finished_object = NULL; | |
8638 | rs->finished_annex = NULL; | |
0876f84a DJ |
8639 | } |
8640 | ||
8641 | /* Request only enough to fit in a single packet. The actual data | |
8642 | may not, since we don't know how much of it will need to be escaped; | |
8643 | the target is free to respond with slightly less data. We subtract | |
8644 | five to account for the response type and the protocol frame. */ | |
8645 | n = min (get_remote_packet_size () - 5, len); | |
8646 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8647 | object_name, annex ? annex : "", | |
8648 | phex_nz (offset, sizeof offset), | |
8649 | phex_nz (n, sizeof n)); | |
8650 | i = putpkt (rs->buf); | |
8651 | if (i < 0) | |
2ed4b548 | 8652 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8653 | |
8654 | rs->buf[0] = '\0'; | |
8655 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8656 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8657 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8658 | |
8659 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8660 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8661 | ||
8662 | /* 'm' means there is (or at least might be) more data after this | |
8663 | batch. That does not make sense unless there's at least one byte | |
8664 | of data in this reply. */ | |
8665 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8666 | error (_("Remote qXfer reply contained no data.")); | |
8667 | ||
8668 | /* Got some data. */ | |
bc20a4af PA |
8669 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8670 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8671 | |
8672 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8673 | or possibly empty. If we have the final block of a non-empty |
8674 | object, record this fact to bypass a subsequent partial read. */ | |
8675 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8676 | { |
8e88304f TT |
8677 | rs->finished_object = xstrdup (object_name); |
8678 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8679 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8680 | } |
8681 | ||
9b409511 YQ |
8682 | if (i == 0) |
8683 | return TARGET_XFER_EOF; | |
8684 | else | |
8685 | { | |
8686 | *xfered_len = i; | |
8687 | return TARGET_XFER_OK; | |
8688 | } | |
0876f84a DJ |
8689 | } |
8690 | ||
9b409511 | 8691 | static enum target_xfer_status |
4b8a223f | 8692 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 8693 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
8694 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
8695 | ULONGEST *xfered_len) | |
c906108c | 8696 | { |
82f73884 | 8697 | struct remote_state *rs; |
c906108c | 8698 | int i; |
6d820c5c | 8699 | char *p2; |
1e3ff5ad | 8700 | char query_type; |
c906108c | 8701 | |
e6e4e701 | 8702 | set_remote_traceframe (); |
82f73884 PA |
8703 | set_general_thread (inferior_ptid); |
8704 | ||
8705 | rs = get_remote_state (); | |
8706 | ||
b2182ed2 | 8707 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8708 | if (object == TARGET_OBJECT_MEMORY) |
8709 | { | |
2d717e4f DJ |
8710 | /* If the remote target is connected but not running, we should |
8711 | pass this request down to a lower stratum (e.g. the executable | |
8712 | file). */ | |
8713 | if (!target_has_execution) | |
9b409511 | 8714 | return TARGET_XFER_EOF; |
2d717e4f | 8715 | |
21e3b9b9 | 8716 | if (writebuf != NULL) |
9b409511 | 8717 | return remote_write_bytes (offset, writebuf, len, xfered_len); |
21e3b9b9 | 8718 | else |
8acf9577 | 8719 | return remote_read_bytes (ops, offset, readbuf, len, xfered_len); |
21e3b9b9 DJ |
8720 | } |
8721 | ||
0df8b418 | 8722 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8723 | if (object == TARGET_OBJECT_SPU) |
8724 | { | |
8725 | if (readbuf) | |
8726 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
8727 | xfered_len, &remote_protocol_packets |
8728 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
8729 | else |
8730 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
8731 | xfered_len, &remote_protocol_packets |
8732 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
8733 | } |
8734 | ||
4aa995e1 PA |
8735 | /* Handle extra signal info using qxfer packets. */ |
8736 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8737 | { | |
8738 | if (readbuf) | |
8739 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 8740 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
8741 | [PACKET_qXfer_siginfo_read]); |
8742 | else | |
3e43a32a | 8743 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 8744 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
8745 | &remote_protocol_packets |
8746 | [PACKET_qXfer_siginfo_write]); | |
8747 | } | |
8748 | ||
0fb4aa4b PA |
8749 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8750 | { | |
8751 | if (readbuf) | |
3e43a32a | 8752 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 8753 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
8754 | &remote_protocol_packets |
8755 | [PACKET_qXfer_statictrace_read]); | |
8756 | else | |
2ed4b548 | 8757 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
8758 | } |
8759 | ||
a76d924d DJ |
8760 | /* Only handle flash writes. */ |
8761 | if (writebuf != NULL) | |
8762 | { | |
8763 | LONGEST xfered; | |
8764 | ||
8765 | switch (object) | |
8766 | { | |
8767 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
8768 | return remote_flash_write (ops, offset, len, xfered_len, |
8769 | writebuf); | |
a76d924d DJ |
8770 | |
8771 | default: | |
2ed4b548 | 8772 | return TARGET_XFER_E_IO; |
a76d924d DJ |
8773 | } |
8774 | } | |
4b8a223f | 8775 | |
1e3ff5ad AC |
8776 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8777 | objects!!! Instead specify new query packets. */ | |
8778 | switch (object) | |
c906108c | 8779 | { |
1e3ff5ad AC |
8780 | case TARGET_OBJECT_AVR: |
8781 | query_type = 'R'; | |
8782 | break; | |
802188a7 RM |
8783 | |
8784 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8785 | gdb_assert (annex == NULL); |
8786 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 8787 | xfered_len, |
0876f84a | 8788 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 8789 | |
23181151 DJ |
8790 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8791 | return remote_read_qxfer | |
9b409511 | 8792 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
8793 | &remote_protocol_packets[PACKET_qXfer_features]); |
8794 | ||
cfa9d6d9 DJ |
8795 | case TARGET_OBJECT_LIBRARIES: |
8796 | return remote_read_qxfer | |
9b409511 | 8797 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
8798 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
8799 | ||
2268b414 JK |
8800 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8801 | return remote_read_qxfer | |
9b409511 | 8802 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
8803 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
8804 | ||
fd79ecee DJ |
8805 | case TARGET_OBJECT_MEMORY_MAP: |
8806 | gdb_assert (annex == NULL); | |
8807 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 8808 | xfered_len, |
fd79ecee DJ |
8809 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
8810 | ||
07e059b5 VP |
8811 | case TARGET_OBJECT_OSDATA: |
8812 | /* Should only get here if we're connected. */ | |
5d93a237 | 8813 | gdb_assert (rs->remote_desc); |
07e059b5 | 8814 | return remote_read_qxfer |
9b409511 | 8815 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
8816 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
8817 | ||
dc146f7c VP |
8818 | case TARGET_OBJECT_THREADS: |
8819 | gdb_assert (annex == NULL); | |
8820 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 8821 | xfered_len, |
dc146f7c VP |
8822 | &remote_protocol_packets[PACKET_qXfer_threads]); |
8823 | ||
b3b9301e PA |
8824 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8825 | gdb_assert (annex == NULL); | |
8826 | return remote_read_qxfer | |
9b409511 | 8827 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 8828 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
8829 | |
8830 | case TARGET_OBJECT_FDPIC: | |
8831 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 8832 | xfered_len, |
78d85199 | 8833 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
8834 | |
8835 | case TARGET_OBJECT_OPENVMS_UIB: | |
8836 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 8837 | xfered_len, |
169081d0 TG |
8838 | &remote_protocol_packets[PACKET_qXfer_uib]); |
8839 | ||
9accd112 MM |
8840 | case TARGET_OBJECT_BTRACE: |
8841 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 8842 | xfered_len, |
9accd112 MM |
8843 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
8844 | ||
1e3ff5ad | 8845 | default: |
2ed4b548 | 8846 | return TARGET_XFER_E_IO; |
c906108c SS |
8847 | } |
8848 | ||
4b8a223f | 8849 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8850 | buffer size. */ |
4b8a223f | 8851 | if (offset == 0 && len == 0) |
ea9c271d | 8852 | return (get_remote_packet_size ()); |
0df8b418 | 8853 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8854 | large enough let the caller deal with it. */ |
ea9c271d | 8855 | if (len < get_remote_packet_size ()) |
2ed4b548 | 8856 | return TARGET_XFER_E_IO; |
ea9c271d | 8857 | len = get_remote_packet_size (); |
1e3ff5ad | 8858 | |
23860348 | 8859 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 8860 | if (!rs->remote_desc) |
8a3fe4f8 | 8861 | error (_("remote query is only available after target open")); |
c906108c | 8862 | |
1e3ff5ad | 8863 | gdb_assert (annex != NULL); |
4b8a223f | 8864 | gdb_assert (readbuf != NULL); |
c906108c | 8865 | |
6d820c5c | 8866 | p2 = rs->buf; |
c906108c SS |
8867 | *p2++ = 'q'; |
8868 | *p2++ = query_type; | |
8869 | ||
23860348 MS |
8870 | /* We used one buffer char for the remote protocol q command and |
8871 | another for the query type. As the remote protocol encapsulation | |
8872 | uses 4 chars plus one extra in case we are debugging | |
8873 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8874 | string. */ | |
c906108c | 8875 | i = 0; |
ea9c271d | 8876 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8877 | { |
1e3ff5ad AC |
8878 | /* Bad caller may have sent forbidden characters. */ |
8879 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8880 | *p2++ = annex[i]; | |
c906108c SS |
8881 | i++; |
8882 | } | |
1e3ff5ad AC |
8883 | *p2 = '\0'; |
8884 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8885 | |
6d820c5c | 8886 | i = putpkt (rs->buf); |
c5aa993b | 8887 | if (i < 0) |
2ed4b548 | 8888 | return TARGET_XFER_E_IO; |
c906108c | 8889 | |
6d820c5c DJ |
8890 | getpkt (&rs->buf, &rs->buf_size, 0); |
8891 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8892 | |
9b409511 YQ |
8893 | *xfered_len = strlen ((char *) readbuf); |
8894 | return TARGET_XFER_OK; | |
c906108c SS |
8895 | } |
8896 | ||
08388c79 DE |
8897 | static int |
8898 | remote_search_memory (struct target_ops* ops, | |
8899 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8900 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8901 | CORE_ADDR *found_addrp) | |
8902 | { | |
f5656ead | 8903 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
8904 | struct remote_state *rs = get_remote_state (); |
8905 | int max_size = get_memory_write_packet_size (); | |
8906 | struct packet_config *packet = | |
8907 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8908 | /* Number of packet bytes used to encode the pattern; |
8909 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8910 | int escaped_pattern_len; |
0df8b418 | 8911 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8912 | int used_pattern_len; |
8913 | int i; | |
8914 | int found; | |
8915 | ULONGEST found_addr; | |
8916 | ||
8917 | /* Don't go to the target if we don't have to. | |
8918 | This is done before checking packet->support to avoid the possibility that | |
8919 | a success for this edge case means the facility works in general. */ | |
8920 | if (pattern_len > search_space_len) | |
8921 | return 0; | |
8922 | if (pattern_len == 0) | |
8923 | { | |
8924 | *found_addrp = start_addr; | |
8925 | return 1; | |
8926 | } | |
8927 | ||
8928 | /* If we already know the packet isn't supported, fall back to the simple | |
8929 | way of searching memory. */ | |
8930 | ||
4082afcc | 8931 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
8932 | { |
8933 | /* Target doesn't provided special support, fall back and use the | |
8934 | standard support (copy memory and do the search here). */ | |
8935 | return simple_search_memory (ops, start_addr, search_space_len, | |
8936 | pattern, pattern_len, found_addrp); | |
8937 | } | |
8938 | ||
28439a30 PA |
8939 | /* Make sure the remote is pointing at the right process. */ |
8940 | set_general_process (); | |
8941 | ||
08388c79 DE |
8942 | /* Insert header. */ |
8943 | i = snprintf (rs->buf, max_size, | |
8944 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8945 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8946 | phex_nz (search_space_len, sizeof (search_space_len))); |
8947 | max_size -= (i + 1); | |
8948 | ||
8949 | /* Escape as much data as fits into rs->buf. */ | |
8950 | escaped_pattern_len = | |
bc20a4af | 8951 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
8952 | &used_pattern_len, max_size); |
8953 | ||
8954 | /* Bail if the pattern is too large. */ | |
8955 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8956 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8957 | |
8958 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8959 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8960 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8961 | { | |
8962 | /* The request may not have worked because the command is not | |
8963 | supported. If so, fall back to the simple way. */ | |
8964 | if (packet->support == PACKET_DISABLE) | |
8965 | { | |
8966 | return simple_search_memory (ops, start_addr, search_space_len, | |
8967 | pattern, pattern_len, found_addrp); | |
8968 | } | |
8969 | return -1; | |
8970 | } | |
8971 | ||
8972 | if (rs->buf[0] == '0') | |
8973 | found = 0; | |
8974 | else if (rs->buf[0] == '1') | |
8975 | { | |
8976 | found = 1; | |
8977 | if (rs->buf[1] != ',') | |
10e0fa18 | 8978 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8979 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8980 | *found_addrp = found_addr; | |
8981 | } | |
8982 | else | |
10e0fa18 | 8983 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8984 | |
8985 | return found; | |
8986 | } | |
8987 | ||
96baa820 | 8988 | static void |
1aac633b | 8989 | remote_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 8990 | struct ui_file *outbuf) |
96baa820 | 8991 | { |
d01949b6 | 8992 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8993 | char *p = rs->buf; |
96baa820 | 8994 | |
5d93a237 | 8995 | if (!rs->remote_desc) |
8a3fe4f8 | 8996 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8997 | |
23860348 | 8998 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8999 | if (command == NULL) |
9000 | command = ""; | |
9001 | ||
23860348 | 9002 | /* The query prefix. */ |
2e9f7625 DJ |
9003 | strcpy (rs->buf, "qRcmd,"); |
9004 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9005 | |
3e43a32a MS |
9006 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9007 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9008 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9009 | |
23860348 | 9010 | /* Encode the actual command. */ |
9f1b45b0 | 9011 | bin2hex ((gdb_byte *) command, p, strlen (command)); |
96baa820 | 9012 | |
6d820c5c | 9013 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9014 | error (_("Communication problem with target.")); |
96baa820 JM |
9015 | |
9016 | /* get/display the response */ | |
9017 | while (1) | |
9018 | { | |
2e9f7625 DJ |
9019 | char *buf; |
9020 | ||
00bf0b85 | 9021 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9022 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9023 | rs->buf[0] = '\0'; |
5b37825d PW |
9024 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9025 | { | |
9026 | /* Timeout. Continue to (try to) read responses. | |
9027 | This is better than stopping with an error, assuming the stub | |
9028 | is still executing the (long) monitor command. | |
9029 | If needed, the user can interrupt gdb using C-c, obtaining | |
9030 | an effect similar to stop on timeout. */ | |
9031 | continue; | |
9032 | } | |
2e9f7625 | 9033 | buf = rs->buf; |
96baa820 | 9034 | if (buf[0] == '\0') |
8a3fe4f8 | 9035 | error (_("Target does not support this command.")); |
96baa820 JM |
9036 | if (buf[0] == 'O' && buf[1] != 'K') |
9037 | { | |
23860348 | 9038 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9039 | continue; |
9040 | } | |
9041 | if (strcmp (buf, "OK") == 0) | |
9042 | break; | |
7be570e7 JM |
9043 | if (strlen (buf) == 3 && buf[0] == 'E' |
9044 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9045 | { | |
8a3fe4f8 | 9046 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9047 | } |
96baa820 JM |
9048 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9049 | { | |
9050 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9051 | |
96baa820 JM |
9052 | fputc_unfiltered (c, outbuf); |
9053 | } | |
9054 | break; | |
9055 | } | |
9056 | } | |
9057 | ||
fd79ecee DJ |
9058 | static VEC(mem_region_s) * |
9059 | remote_memory_map (struct target_ops *ops) | |
9060 | { | |
9061 | VEC(mem_region_s) *result = NULL; | |
9062 | char *text = target_read_stralloc (¤t_target, | |
9063 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9064 | ||
9065 | if (text) | |
9066 | { | |
9067 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9068 | |
fd79ecee DJ |
9069 | result = parse_memory_map (text); |
9070 | do_cleanups (back_to); | |
9071 | } | |
9072 | ||
9073 | return result; | |
9074 | } | |
9075 | ||
c906108c | 9076 | static void |
fba45db2 | 9077 | packet_command (char *args, int from_tty) |
c906108c | 9078 | { |
d01949b6 | 9079 | struct remote_state *rs = get_remote_state (); |
c906108c | 9080 | |
5d93a237 | 9081 | if (!rs->remote_desc) |
8a3fe4f8 | 9082 | error (_("command can only be used with remote target")); |
c906108c | 9083 | |
c5aa993b | 9084 | if (!args) |
8a3fe4f8 | 9085 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9086 | |
9087 | puts_filtered ("sending: "); | |
9088 | print_packet (args); | |
9089 | puts_filtered ("\n"); | |
9090 | putpkt (args); | |
9091 | ||
6d820c5c | 9092 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9093 | puts_filtered ("received: "); |
6d820c5c | 9094 | print_packet (rs->buf); |
c906108c SS |
9095 | puts_filtered ("\n"); |
9096 | } | |
9097 | ||
9098 | #if 0 | |
23860348 | 9099 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9100 | |
a14ed312 | 9101 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9102 | |
a14ed312 | 9103 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9104 | |
a14ed312 | 9105 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9106 | |
a14ed312 | 9107 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9108 | |
23860348 | 9109 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9110 | |
a14ed312 | 9111 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9112 | |
23860348 | 9113 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9114 | |
a14ed312 | 9115 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9116 | |
a14ed312 | 9117 | static void init_remote_threadtests (void); |
c906108c | 9118 | |
23860348 | 9119 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9120 | |
9121 | static void | |
fba45db2 | 9122 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9123 | { |
9124 | int sample_thread = SAMPLE_THREAD; | |
9125 | ||
a3f17187 | 9126 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9127 | set_general_thread (sample_thread); |
c906108c SS |
9128 | } |
9129 | ||
9130 | ||
9131 | static void | |
fba45db2 | 9132 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9133 | { |
9134 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9135 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9136 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9137 | |
79d7f229 | 9138 | if (remote_thread_alive (ptid)) |
c906108c SS |
9139 | printf_filtered ("PASS: Thread alive test\n"); |
9140 | else | |
9141 | printf_filtered ("FAIL: Thread alive test\n"); | |
9142 | } | |
9143 | ||
23860348 | 9144 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9145 | |
9146 | void | |
fba45db2 | 9147 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9148 | { |
9149 | char hexid[20]; | |
9150 | ||
23860348 | 9151 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9152 | hexid[16] = 0; |
9153 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9154 | } | |
9155 | ||
9156 | static void | |
fba45db2 | 9157 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9158 | { |
9159 | int startflag = 1; | |
9160 | threadref nextthread; | |
9161 | int done, result_count; | |
9162 | threadref threadlist[3]; | |
9163 | ||
9164 | printf_filtered ("Remote Threadlist test\n"); | |
9165 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9166 | &result_count, &threadlist[0])) | |
9167 | printf_filtered ("FAIL: threadlist test\n"); | |
9168 | else | |
9169 | { | |
9170 | threadref *scan = threadlist; | |
9171 | threadref *limit = scan + result_count; | |
9172 | ||
9173 | while (scan < limit) | |
9174 | output_threadid (" thread ", scan++); | |
9175 | } | |
9176 | } | |
9177 | ||
9178 | void | |
fba45db2 | 9179 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9180 | { |
9181 | output_threadid ("Threadid: ", &info->threadid); | |
9182 | printf_filtered ("Name: %s\n ", info->shortname); | |
9183 | printf_filtered ("State: %s\n", info->display); | |
9184 | printf_filtered ("other: %s\n\n", info->more_display); | |
9185 | } | |
9186 | ||
9187 | int | |
fba45db2 | 9188 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9189 | { |
9190 | int result; | |
9191 | int set; | |
9192 | struct gdb_ext_thread_info threadinfo; | |
9193 | ||
9194 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9195 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9196 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9197 | display_thread_info (&threadinfo); | |
9198 | return result; | |
9199 | } | |
9200 | ||
9201 | static void | |
fba45db2 | 9202 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9203 | { |
9204 | int athread = SAMPLE_THREAD; | |
9205 | threadref thread; | |
9206 | int set; | |
9207 | ||
9208 | int_to_threadref (&thread, athread); | |
9209 | printf_filtered ("Remote Threadinfo test\n"); | |
9210 | if (!get_and_display_threadinfo (&thread)) | |
9211 | printf_filtered ("FAIL cannot get thread info\n"); | |
9212 | } | |
9213 | ||
9214 | static int | |
fba45db2 | 9215 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9216 | { |
9217 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9218 | return get_and_display_threadinfo (ref); | |
9219 | } | |
9220 | ||
9221 | static void | |
fba45db2 | 9222 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9223 | { |
9224 | printf_filtered ("Remote Threadlist update test\n"); | |
9225 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9226 | } | |
9227 | ||
9228 | static void | |
9229 | init_remote_threadtests (void) | |
9230 | { | |
3e43a32a MS |
9231 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9232 | _("Fetch and print the remote list of " | |
9233 | "thread identifiers, one pkt only")); | |
c906108c | 9234 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9235 | _("Fetch and display info about one thread")); |
c906108c | 9236 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9237 | _("Test setting to a different thread")); |
c906108c | 9238 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9239 | _("Iterate through updating all remote thread info")); |
c906108c | 9240 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9241 | _(" Remote thread alive test ")); |
c906108c SS |
9242 | } |
9243 | ||
9244 | #endif /* 0 */ | |
9245 | ||
f3fb8c85 MS |
9246 | /* Convert a thread ID to a string. Returns the string in a static |
9247 | buffer. */ | |
9248 | ||
9249 | static char * | |
117de6a9 | 9250 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9251 | { |
79d7f229 | 9252 | static char buf[64]; |
82f73884 | 9253 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9254 | |
7cee1e54 PA |
9255 | if (ptid_equal (ptid, null_ptid)) |
9256 | return normal_pid_to_str (ptid); | |
9257 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9258 | { |
9259 | /* Printing an inferior target id. */ | |
9260 | ||
9261 | /* When multi-process extensions are off, there's no way in the | |
9262 | remote protocol to know the remote process id, if there's any | |
9263 | at all. There's one exception --- when we're connected with | |
9264 | target extended-remote, and we manually attached to a process | |
9265 | with "attach PID". We don't record anywhere a flag that | |
9266 | allows us to distinguish that case from the case of | |
9267 | connecting with extended-remote and the stub already being | |
9268 | attached to a process, and reporting yes to qAttached, hence | |
9269 | no smart special casing here. */ | |
9270 | if (!remote_multi_process_p (rs)) | |
9271 | { | |
9272 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9273 | return buf; | |
9274 | } | |
9275 | ||
9276 | return normal_pid_to_str (ptid); | |
82f73884 | 9277 | } |
ecd0ada5 | 9278 | else |
79d7f229 | 9279 | { |
ecd0ada5 PA |
9280 | if (ptid_equal (magic_null_ptid, ptid)) |
9281 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9282 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 | 9283 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
ba348170 | 9284 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); |
ecd0ada5 PA |
9285 | else |
9286 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 9287 | ptid_get_lwp (ptid)); |
79d7f229 PA |
9288 | return buf; |
9289 | } | |
f3fb8c85 MS |
9290 | } |
9291 | ||
38691318 KB |
9292 | /* Get the address of the thread local variable in OBJFILE which is |
9293 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9294 | ||
9295 | static CORE_ADDR | |
117de6a9 PA |
9296 | remote_get_thread_local_address (struct target_ops *ops, |
9297 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9298 | { |
4082afcc | 9299 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
9300 | { |
9301 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9302 | char *p = rs->buf; |
82f73884 | 9303 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9304 | enum packet_result result; |
38691318 KB |
9305 | |
9306 | strcpy (p, "qGetTLSAddr:"); | |
9307 | p += strlen (p); | |
82f73884 | 9308 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9309 | *p++ = ','; |
9310 | p += hexnumstr (p, offset); | |
9311 | *p++ = ','; | |
9312 | p += hexnumstr (p, lm); | |
9313 | *p++ = '\0'; | |
9314 | ||
6d820c5c DJ |
9315 | putpkt (rs->buf); |
9316 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9317 | result = packet_ok (rs->buf, |
9318 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9319 | if (result == PACKET_OK) |
38691318 KB |
9320 | { |
9321 | ULONGEST result; | |
9322 | ||
6d820c5c | 9323 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9324 | return result; |
9325 | } | |
571dd617 | 9326 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9327 | throw_error (TLS_GENERIC_ERROR, |
9328 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9329 | else |
109c3e39 AC |
9330 | throw_error (TLS_GENERIC_ERROR, |
9331 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9332 | } |
9333 | else | |
109c3e39 AC |
9334 | throw_error (TLS_GENERIC_ERROR, |
9335 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9336 | /* Not reached. */ |
9337 | return 0; | |
9338 | } | |
9339 | ||
711e434b PM |
9340 | /* Provide thread local base, i.e. Thread Information Block address. |
9341 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9342 | ||
70221824 | 9343 | static int |
bd7ae0f5 | 9344 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 9345 | { |
4082afcc | 9346 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
9347 | { |
9348 | struct remote_state *rs = get_remote_state (); | |
9349 | char *p = rs->buf; | |
9350 | char *endp = rs->buf + get_remote_packet_size (); | |
9351 | enum packet_result result; | |
9352 | ||
9353 | strcpy (p, "qGetTIBAddr:"); | |
9354 | p += strlen (p); | |
9355 | p = write_ptid (p, endp, ptid); | |
9356 | *p++ = '\0'; | |
9357 | ||
9358 | putpkt (rs->buf); | |
9359 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9360 | result = packet_ok (rs->buf, | |
9361 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9362 | if (result == PACKET_OK) | |
9363 | { | |
9364 | ULONGEST result; | |
9365 | ||
9366 | unpack_varlen_hex (rs->buf, &result); | |
9367 | if (addr) | |
9368 | *addr = (CORE_ADDR) result; | |
9369 | return 1; | |
9370 | } | |
9371 | else if (result == PACKET_UNKNOWN) | |
9372 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9373 | else | |
9374 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9375 | } | |
9376 | else | |
9377 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9378 | /* Not reached. */ | |
9379 | return 0; | |
9380 | } | |
9381 | ||
29709017 DJ |
9382 | /* Support for inferring a target description based on the current |
9383 | architecture and the size of a 'g' packet. While the 'g' packet | |
9384 | can have any size (since optional registers can be left off the | |
9385 | end), some sizes are easily recognizable given knowledge of the | |
9386 | approximate architecture. */ | |
9387 | ||
9388 | struct remote_g_packet_guess | |
9389 | { | |
9390 | int bytes; | |
9391 | const struct target_desc *tdesc; | |
9392 | }; | |
9393 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9394 | DEF_VEC_O(remote_g_packet_guess_s); | |
9395 | ||
9396 | struct remote_g_packet_data | |
9397 | { | |
9398 | VEC(remote_g_packet_guess_s) *guesses; | |
9399 | }; | |
9400 | ||
9401 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9402 | ||
9403 | static void * | |
9404 | remote_g_packet_data_init (struct obstack *obstack) | |
9405 | { | |
9406 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9407 | } | |
9408 | ||
9409 | void | |
9410 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9411 | const struct target_desc *tdesc) | |
9412 | { | |
9413 | struct remote_g_packet_data *data | |
9414 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9415 | struct remote_g_packet_guess new_guess, *guess; | |
9416 | int ix; | |
9417 | ||
9418 | gdb_assert (tdesc != NULL); | |
9419 | ||
9420 | for (ix = 0; | |
9421 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9422 | ix++) | |
9423 | if (guess->bytes == bytes) | |
9424 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9425 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9426 | bytes); |
9427 | ||
9428 | new_guess.bytes = bytes; | |
9429 | new_guess.tdesc = tdesc; | |
9430 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9431 | } | |
9432 | ||
d962ef82 DJ |
9433 | /* Return 1 if remote_read_description would do anything on this target |
9434 | and architecture, 0 otherwise. */ | |
9435 | ||
9436 | static int | |
9437 | remote_read_description_p (struct target_ops *target) | |
9438 | { | |
9439 | struct remote_g_packet_data *data | |
f5656ead | 9440 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9441 | |
9442 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9443 | return 1; | |
9444 | ||
9445 | return 0; | |
9446 | } | |
9447 | ||
29709017 DJ |
9448 | static const struct target_desc * |
9449 | remote_read_description (struct target_ops *target) | |
9450 | { | |
9451 | struct remote_g_packet_data *data | |
f5656ead | 9452 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9453 | |
d962ef82 DJ |
9454 | /* Do not try this during initial connection, when we do not know |
9455 | whether there is a running but stopped thread. */ | |
9456 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 9457 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 9458 | |
29709017 DJ |
9459 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9460 | { | |
9461 | struct remote_g_packet_guess *guess; | |
9462 | int ix; | |
9463 | int bytes = send_g_packet (); | |
9464 | ||
9465 | for (ix = 0; | |
9466 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9467 | ix++) | |
9468 | if (guess->bytes == bytes) | |
9469 | return guess->tdesc; | |
9470 | ||
9471 | /* We discard the g packet. A minor optimization would be to | |
9472 | hold on to it, and fill the register cache once we have selected | |
9473 | an architecture, but it's too tricky to do safely. */ | |
9474 | } | |
9475 | ||
2117c711 | 9476 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
9477 | } |
9478 | ||
a6b151f1 DJ |
9479 | /* Remote file transfer support. This is host-initiated I/O, not |
9480 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9481 | ||
9482 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9483 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9484 | decrease *LEFT. Otherwise raise an error. */ | |
9485 | ||
9486 | static void | |
9487 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9488 | { | |
9489 | int len = strlen (string); | |
9490 | ||
9491 | if (len > *left) | |
9492 | error (_("Packet too long for target.")); | |
9493 | ||
9494 | memcpy (*buffer, string, len); | |
9495 | *buffer += len; | |
9496 | *left -= len; | |
9497 | ||
9498 | /* NUL-terminate the buffer as a convenience, if there is | |
9499 | room. */ | |
9500 | if (*left) | |
9501 | **buffer = '\0'; | |
9502 | } | |
9503 | ||
9504 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9505 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9506 | decrease *LEFT. Otherwise raise an error. */ | |
9507 | ||
9508 | static void | |
9509 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9510 | int len) | |
9511 | { | |
9512 | if (2 * len > *left) | |
9513 | error (_("Packet too long for target.")); | |
9514 | ||
9515 | bin2hex (bytes, *buffer, len); | |
9516 | *buffer += 2 * len; | |
9517 | *left -= 2 * len; | |
9518 | ||
9519 | /* NUL-terminate the buffer as a convenience, if there is | |
9520 | room. */ | |
9521 | if (*left) | |
9522 | **buffer = '\0'; | |
9523 | } | |
9524 | ||
9525 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9526 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9527 | decrease *LEFT. Otherwise raise an error. */ | |
9528 | ||
9529 | static void | |
9530 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9531 | { | |
9532 | int len = hexnumlen (value); | |
9533 | ||
9534 | if (len > *left) | |
9535 | error (_("Packet too long for target.")); | |
9536 | ||
9537 | hexnumstr (*buffer, value); | |
9538 | *buffer += len; | |
9539 | *left -= len; | |
9540 | ||
9541 | /* NUL-terminate the buffer as a convenience, if there is | |
9542 | room. */ | |
9543 | if (*left) | |
9544 | **buffer = '\0'; | |
9545 | } | |
9546 | ||
9547 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9548 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9549 | was included, and *ATTACHMENT to point to the start of the annex | |
9550 | if any. The length of the packet isn't needed here; there may | |
9551 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9552 | ||
9553 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9554 | -1 is returned, the other variables may not be initialized. */ | |
9555 | ||
9556 | static int | |
9557 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9558 | int *remote_errno, char **attachment) | |
9559 | { | |
9560 | char *p, *p2; | |
9561 | ||
9562 | *remote_errno = 0; | |
9563 | *attachment = NULL; | |
9564 | ||
9565 | if (buffer[0] != 'F') | |
9566 | return -1; | |
9567 | ||
9568 | errno = 0; | |
9569 | *retcode = strtol (&buffer[1], &p, 16); | |
9570 | if (errno != 0 || p == &buffer[1]) | |
9571 | return -1; | |
9572 | ||
9573 | /* Check for ",errno". */ | |
9574 | if (*p == ',') | |
9575 | { | |
9576 | errno = 0; | |
9577 | *remote_errno = strtol (p + 1, &p2, 16); | |
9578 | if (errno != 0 || p + 1 == p2) | |
9579 | return -1; | |
9580 | p = p2; | |
9581 | } | |
9582 | ||
9583 | /* Check for ";attachment". If there is no attachment, the | |
9584 | packet should end here. */ | |
9585 | if (*p == ';') | |
9586 | { | |
9587 | *attachment = p + 1; | |
9588 | return 0; | |
9589 | } | |
9590 | else if (*p == '\0') | |
9591 | return 0; | |
9592 | else | |
9593 | return -1; | |
9594 | } | |
9595 | ||
9596 | /* Send a prepared I/O packet to the target and read its response. | |
9597 | The prepared packet is in the global RS->BUF before this function | |
9598 | is called, and the answer is there when we return. | |
9599 | ||
9600 | COMMAND_BYTES is the length of the request to send, which may include | |
9601 | binary data. WHICH_PACKET is the packet configuration to check | |
9602 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9603 | is set to the error number and -1 is returned. Otherwise the value | |
9604 | returned by the function is returned. | |
9605 | ||
9606 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9607 | attachment is expected; an error will be reported if there's a | |
9608 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9609 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9610 | attachment's length. */ | |
9611 | ||
9612 | static int | |
9613 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9614 | int *remote_errno, char **attachment, | |
9615 | int *attachment_len) | |
9616 | { | |
9617 | struct remote_state *rs = get_remote_state (); | |
9618 | int ret, bytes_read; | |
9619 | char *attachment_tmp; | |
9620 | ||
5d93a237 | 9621 | if (!rs->remote_desc |
4082afcc | 9622 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
9623 | { |
9624 | *remote_errno = FILEIO_ENOSYS; | |
9625 | return -1; | |
9626 | } | |
9627 | ||
9628 | putpkt_binary (rs->buf, command_bytes); | |
9629 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9630 | ||
9631 | /* If it timed out, something is wrong. Don't try to parse the | |
9632 | buffer. */ | |
9633 | if (bytes_read < 0) | |
9634 | { | |
9635 | *remote_errno = FILEIO_EINVAL; | |
9636 | return -1; | |
9637 | } | |
9638 | ||
9639 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9640 | { | |
9641 | case PACKET_ERROR: | |
9642 | *remote_errno = FILEIO_EINVAL; | |
9643 | return -1; | |
9644 | case PACKET_UNKNOWN: | |
9645 | *remote_errno = FILEIO_ENOSYS; | |
9646 | return -1; | |
9647 | case PACKET_OK: | |
9648 | break; | |
9649 | } | |
9650 | ||
9651 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9652 | &attachment_tmp)) | |
9653 | { | |
9654 | *remote_errno = FILEIO_EINVAL; | |
9655 | return -1; | |
9656 | } | |
9657 | ||
9658 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9659 | if ((attachment_tmp == NULL && attachment != NULL) | |
9660 | || (attachment_tmp != NULL && attachment == NULL)) | |
9661 | { | |
9662 | *remote_errno = FILEIO_EINVAL; | |
9663 | return -1; | |
9664 | } | |
9665 | ||
9666 | /* If an attachment was found, it must point into the packet buffer; | |
9667 | work out how many bytes there were. */ | |
9668 | if (attachment_tmp != NULL) | |
9669 | { | |
9670 | *attachment = attachment_tmp; | |
9671 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9672 | } | |
9673 | ||
9674 | return ret; | |
9675 | } | |
9676 | ||
9677 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9678 | remote file descriptor, or -1 if an error occurs (and set | |
9679 | *REMOTE_ERRNO). */ | |
9680 | ||
9681 | static int | |
cd897586 TT |
9682 | remote_hostio_open (struct target_ops *self, |
9683 | const char *filename, int flags, int mode, | |
a6b151f1 DJ |
9684 | int *remote_errno) |
9685 | { | |
9686 | struct remote_state *rs = get_remote_state (); | |
9687 | char *p = rs->buf; | |
9688 | int left = get_remote_packet_size () - 1; | |
9689 | ||
9690 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9691 | ||
9692 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9693 | strlen (filename)); | |
9694 | remote_buffer_add_string (&p, &left, ","); | |
9695 | ||
9696 | remote_buffer_add_int (&p, &left, flags); | |
9697 | remote_buffer_add_string (&p, &left, ","); | |
9698 | ||
9699 | remote_buffer_add_int (&p, &left, mode); | |
9700 | ||
9701 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9702 | remote_errno, NULL, NULL); | |
9703 | } | |
9704 | ||
9705 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9706 | Return the number of bytes written, or -1 if an error occurs (and | |
9707 | set *REMOTE_ERRNO). */ | |
9708 | ||
9709 | static int | |
0d866f62 TT |
9710 | remote_hostio_pwrite (struct target_ops *self, |
9711 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
9712 | ULONGEST offset, int *remote_errno) |
9713 | { | |
9714 | struct remote_state *rs = get_remote_state (); | |
9715 | char *p = rs->buf; | |
9716 | int left = get_remote_packet_size (); | |
9717 | int out_len; | |
9718 | ||
9719 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9720 | ||
9721 | remote_buffer_add_int (&p, &left, fd); | |
9722 | remote_buffer_add_string (&p, &left, ","); | |
9723 | ||
9724 | remote_buffer_add_int (&p, &left, offset); | |
9725 | remote_buffer_add_string (&p, &left, ","); | |
9726 | ||
bc20a4af | 9727 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9728 | get_remote_packet_size () - (p - rs->buf)); |
9729 | ||
9730 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9731 | remote_errno, NULL, NULL); | |
9732 | } | |
9733 | ||
9734 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9735 | Return the number of bytes read, or -1 if an error occurs (and | |
9736 | set *REMOTE_ERRNO). */ | |
9737 | ||
9738 | static int | |
a3be983c TT |
9739 | remote_hostio_pread (struct target_ops *self, |
9740 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
9741 | ULONGEST offset, int *remote_errno) |
9742 | { | |
9743 | struct remote_state *rs = get_remote_state (); | |
9744 | char *p = rs->buf; | |
9745 | char *attachment; | |
9746 | int left = get_remote_packet_size (); | |
9747 | int ret, attachment_len; | |
9748 | int read_len; | |
9749 | ||
9750 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9751 | ||
9752 | remote_buffer_add_int (&p, &left, fd); | |
9753 | remote_buffer_add_string (&p, &left, ","); | |
9754 | ||
9755 | remote_buffer_add_int (&p, &left, len); | |
9756 | remote_buffer_add_string (&p, &left, ","); | |
9757 | ||
9758 | remote_buffer_add_int (&p, &left, offset); | |
9759 | ||
9760 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9761 | remote_errno, &attachment, | |
9762 | &attachment_len); | |
9763 | ||
9764 | if (ret < 0) | |
9765 | return ret; | |
9766 | ||
bc20a4af | 9767 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9768 | read_buf, len); |
9769 | if (read_len != ret) | |
9770 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9771 | ||
9772 | return ret; | |
9773 | } | |
9774 | ||
9775 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9776 | (and set *REMOTE_ERRNO). */ | |
9777 | ||
9778 | static int | |
df39ea25 | 9779 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
9780 | { |
9781 | struct remote_state *rs = get_remote_state (); | |
9782 | char *p = rs->buf; | |
9783 | int left = get_remote_packet_size () - 1; | |
9784 | ||
9785 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9786 | ||
9787 | remote_buffer_add_int (&p, &left, fd); | |
9788 | ||
9789 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9790 | remote_errno, NULL, NULL); | |
9791 | } | |
9792 | ||
9793 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9794 | occurs (and set *REMOTE_ERRNO). */ | |
9795 | ||
9796 | static int | |
dbbca37d TT |
9797 | remote_hostio_unlink (struct target_ops *self, |
9798 | const char *filename, int *remote_errno) | |
a6b151f1 DJ |
9799 | { |
9800 | struct remote_state *rs = get_remote_state (); | |
9801 | char *p = rs->buf; | |
9802 | int left = get_remote_packet_size () - 1; | |
9803 | ||
9804 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9805 | ||
9806 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9807 | strlen (filename)); | |
9808 | ||
9809 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9810 | remote_errno, NULL, NULL); | |
9811 | } | |
9812 | ||
b9e7b9c3 UW |
9813 | /* Read value of symbolic link FILENAME on the remote target. Return |
9814 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9815 | occurs (and set *REMOTE_ERRNO). */ | |
9816 | ||
9817 | static char * | |
fab5aa7c TT |
9818 | remote_hostio_readlink (struct target_ops *self, |
9819 | const char *filename, int *remote_errno) | |
b9e7b9c3 UW |
9820 | { |
9821 | struct remote_state *rs = get_remote_state (); | |
9822 | char *p = rs->buf; | |
9823 | char *attachment; | |
9824 | int left = get_remote_packet_size (); | |
9825 | int len, attachment_len; | |
9826 | int read_len; | |
9827 | char *ret; | |
9828 | ||
9829 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9830 | ||
9831 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9832 | strlen (filename)); | |
9833 | ||
9834 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9835 | remote_errno, &attachment, | |
9836 | &attachment_len); | |
9837 | ||
9838 | if (len < 0) | |
9839 | return NULL; | |
9840 | ||
9841 | ret = xmalloc (len + 1); | |
9842 | ||
bc20a4af PA |
9843 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
9844 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
9845 | if (read_len != len) |
9846 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9847 | ||
9848 | ret[len] = '\0'; | |
9849 | return ret; | |
9850 | } | |
9851 | ||
a6b151f1 DJ |
9852 | static int |
9853 | remote_fileio_errno_to_host (int errnum) | |
9854 | { | |
9855 | switch (errnum) | |
9856 | { | |
9857 | case FILEIO_EPERM: | |
9858 | return EPERM; | |
9859 | case FILEIO_ENOENT: | |
9860 | return ENOENT; | |
9861 | case FILEIO_EINTR: | |
9862 | return EINTR; | |
9863 | case FILEIO_EIO: | |
9864 | return EIO; | |
9865 | case FILEIO_EBADF: | |
9866 | return EBADF; | |
9867 | case FILEIO_EACCES: | |
9868 | return EACCES; | |
9869 | case FILEIO_EFAULT: | |
9870 | return EFAULT; | |
9871 | case FILEIO_EBUSY: | |
9872 | return EBUSY; | |
9873 | case FILEIO_EEXIST: | |
9874 | return EEXIST; | |
9875 | case FILEIO_ENODEV: | |
9876 | return ENODEV; | |
9877 | case FILEIO_ENOTDIR: | |
9878 | return ENOTDIR; | |
9879 | case FILEIO_EISDIR: | |
9880 | return EISDIR; | |
9881 | case FILEIO_EINVAL: | |
9882 | return EINVAL; | |
9883 | case FILEIO_ENFILE: | |
9884 | return ENFILE; | |
9885 | case FILEIO_EMFILE: | |
9886 | return EMFILE; | |
9887 | case FILEIO_EFBIG: | |
9888 | return EFBIG; | |
9889 | case FILEIO_ENOSPC: | |
9890 | return ENOSPC; | |
9891 | case FILEIO_ESPIPE: | |
9892 | return ESPIPE; | |
9893 | case FILEIO_EROFS: | |
9894 | return EROFS; | |
9895 | case FILEIO_ENOSYS: | |
9896 | return ENOSYS; | |
9897 | case FILEIO_ENAMETOOLONG: | |
9898 | return ENAMETOOLONG; | |
9899 | } | |
9900 | return -1; | |
9901 | } | |
9902 | ||
9903 | static char * | |
9904 | remote_hostio_error (int errnum) | |
9905 | { | |
9906 | int host_error = remote_fileio_errno_to_host (errnum); | |
9907 | ||
9908 | if (host_error == -1) | |
9909 | error (_("Unknown remote I/O error %d"), errnum); | |
9910 | else | |
9911 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9912 | } | |
9913 | ||
a6b151f1 DJ |
9914 | static void |
9915 | remote_hostio_close_cleanup (void *opaque) | |
9916 | { | |
9917 | int fd = *(int *) opaque; | |
9918 | int remote_errno; | |
9919 | ||
df39ea25 | 9920 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
9921 | } |
9922 | ||
f1838a98 UW |
9923 | |
9924 | static void * | |
9925 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9926 | { | |
9927 | const char *filename = bfd_get_filename (abfd); | |
9928 | int fd, remote_errno; | |
9929 | int *stream; | |
9930 | ||
9931 | gdb_assert (remote_filename_p (filename)); | |
9932 | ||
cd897586 TT |
9933 | fd = remote_hostio_open (find_target_at (process_stratum), |
9934 | filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
f1838a98 UW |
9935 | if (fd == -1) |
9936 | { | |
9937 | errno = remote_fileio_errno_to_host (remote_errno); | |
9938 | bfd_set_error (bfd_error_system_call); | |
9939 | return NULL; | |
9940 | } | |
9941 | ||
9942 | stream = xmalloc (sizeof (int)); | |
9943 | *stream = fd; | |
9944 | return stream; | |
9945 | } | |
9946 | ||
9947 | static int | |
9948 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9949 | { | |
9950 | int fd = *(int *)stream; | |
9951 | int remote_errno; | |
9952 | ||
9953 | xfree (stream); | |
9954 | ||
9955 | /* Ignore errors on close; these may happen if the remote | |
9956 | connection was already torn down. */ | |
df39ea25 | 9957 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
f1838a98 | 9958 | |
39ed5604 JK |
9959 | /* Zero means success. */ |
9960 | return 0; | |
f1838a98 UW |
9961 | } |
9962 | ||
9963 | static file_ptr | |
9964 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9965 | file_ptr nbytes, file_ptr offset) | |
9966 | { | |
9967 | int fd = *(int *)stream; | |
9968 | int remote_errno; | |
9969 | file_ptr pos, bytes; | |
9970 | ||
9971 | pos = 0; | |
9972 | while (nbytes > pos) | |
9973 | { | |
a3be983c TT |
9974 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
9975 | fd, (gdb_byte *) buf + pos, nbytes - pos, | |
f1838a98 UW |
9976 | offset + pos, &remote_errno); |
9977 | if (bytes == 0) | |
9978 | /* Success, but no bytes, means end-of-file. */ | |
9979 | break; | |
9980 | if (bytes == -1) | |
9981 | { | |
9982 | errno = remote_fileio_errno_to_host (remote_errno); | |
9983 | bfd_set_error (bfd_error_system_call); | |
9984 | return -1; | |
9985 | } | |
9986 | ||
9987 | pos += bytes; | |
9988 | } | |
9989 | ||
9990 | return pos; | |
9991 | } | |
9992 | ||
9993 | static int | |
9994 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9995 | { | |
9996 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9997 | sb->st_size = INT_MAX; | |
9998 | return 0; | |
9999 | } | |
10000 | ||
10001 | int | |
10002 | remote_filename_p (const char *filename) | |
10003 | { | |
3736004f PA |
10004 | return strncmp (filename, |
10005 | REMOTE_SYSROOT_PREFIX, | |
10006 | sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0; | |
f1838a98 UW |
10007 | } |
10008 | ||
10009 | bfd * | |
10010 | remote_bfd_open (const char *remote_file, const char *target) | |
10011 | { | |
64c31149 TT |
10012 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
10013 | remote_bfd_iovec_open, NULL, | |
10014 | remote_bfd_iovec_pread, | |
10015 | remote_bfd_iovec_close, | |
10016 | remote_bfd_iovec_stat); | |
10017 | ||
a4453b7e | 10018 | return abfd; |
f1838a98 UW |
10019 | } |
10020 | ||
a6b151f1 DJ |
10021 | void |
10022 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10023 | { | |
10024 | struct cleanup *back_to, *close_cleanup; | |
10025 | int retcode, fd, remote_errno, bytes, io_size; | |
10026 | FILE *file; | |
10027 | gdb_byte *buffer; | |
10028 | int bytes_in_buffer; | |
10029 | int saw_eof; | |
10030 | ULONGEST offset; | |
5d93a237 | 10031 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10032 | |
5d93a237 | 10033 | if (!rs->remote_desc) |
a6b151f1 DJ |
10034 | error (_("command can only be used with remote target")); |
10035 | ||
614c279d | 10036 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10037 | if (file == NULL) |
10038 | perror_with_name (local_file); | |
7c8a8b04 | 10039 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10040 | |
cd897586 TT |
10041 | fd = remote_hostio_open (find_target_at (process_stratum), |
10042 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
a6b151f1 DJ |
10043 | | FILEIO_O_TRUNC), |
10044 | 0700, &remote_errno); | |
10045 | if (fd == -1) | |
10046 | remote_hostio_error (remote_errno); | |
10047 | ||
10048 | /* Send up to this many bytes at once. They won't all fit in the | |
10049 | remote packet limit, so we'll transfer slightly fewer. */ | |
10050 | io_size = get_remote_packet_size (); | |
10051 | buffer = xmalloc (io_size); | |
10052 | make_cleanup (xfree, buffer); | |
10053 | ||
10054 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10055 | ||
10056 | bytes_in_buffer = 0; | |
10057 | saw_eof = 0; | |
10058 | offset = 0; | |
10059 | while (bytes_in_buffer || !saw_eof) | |
10060 | { | |
10061 | if (!saw_eof) | |
10062 | { | |
3e43a32a MS |
10063 | bytes = fread (buffer + bytes_in_buffer, 1, |
10064 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10065 | file); |
10066 | if (bytes == 0) | |
10067 | { | |
10068 | if (ferror (file)) | |
10069 | error (_("Error reading %s."), local_file); | |
10070 | else | |
10071 | { | |
10072 | /* EOF. Unless there is something still in the | |
10073 | buffer from the last iteration, we are done. */ | |
10074 | saw_eof = 1; | |
10075 | if (bytes_in_buffer == 0) | |
10076 | break; | |
10077 | } | |
10078 | } | |
10079 | } | |
10080 | else | |
10081 | bytes = 0; | |
10082 | ||
10083 | bytes += bytes_in_buffer; | |
10084 | bytes_in_buffer = 0; | |
10085 | ||
0d866f62 TT |
10086 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10087 | fd, buffer, bytes, | |
3e43a32a | 10088 | offset, &remote_errno); |
a6b151f1 DJ |
10089 | |
10090 | if (retcode < 0) | |
10091 | remote_hostio_error (remote_errno); | |
10092 | else if (retcode == 0) | |
10093 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10094 | else if (retcode < bytes) | |
10095 | { | |
10096 | /* Short write. Save the rest of the read data for the next | |
10097 | write. */ | |
10098 | bytes_in_buffer = bytes - retcode; | |
10099 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10100 | } | |
10101 | ||
10102 | offset += retcode; | |
10103 | } | |
10104 | ||
10105 | discard_cleanups (close_cleanup); | |
df39ea25 | 10106 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10107 | remote_hostio_error (remote_errno); |
10108 | ||
10109 | if (from_tty) | |
10110 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10111 | do_cleanups (back_to); | |
10112 | } | |
10113 | ||
10114 | void | |
10115 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10116 | { | |
10117 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10118 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10119 | FILE *file; |
10120 | gdb_byte *buffer; | |
10121 | ULONGEST offset; | |
5d93a237 | 10122 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10123 | |
5d93a237 | 10124 | if (!rs->remote_desc) |
a6b151f1 DJ |
10125 | error (_("command can only be used with remote target")); |
10126 | ||
cd897586 TT |
10127 | fd = remote_hostio_open (find_target_at (process_stratum), |
10128 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
a6b151f1 DJ |
10129 | if (fd == -1) |
10130 | remote_hostio_error (remote_errno); | |
10131 | ||
614c279d | 10132 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10133 | if (file == NULL) |
10134 | perror_with_name (local_file); | |
7c8a8b04 | 10135 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10136 | |
10137 | /* Send up to this many bytes at once. They won't all fit in the | |
10138 | remote packet limit, so we'll transfer slightly fewer. */ | |
10139 | io_size = get_remote_packet_size (); | |
10140 | buffer = xmalloc (io_size); | |
10141 | make_cleanup (xfree, buffer); | |
10142 | ||
10143 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10144 | ||
10145 | offset = 0; | |
10146 | while (1) | |
10147 | { | |
a3be983c TT |
10148 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10149 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10150 | if (bytes == 0) |
10151 | /* Success, but no bytes, means end-of-file. */ | |
10152 | break; | |
10153 | if (bytes == -1) | |
10154 | remote_hostio_error (remote_errno); | |
10155 | ||
10156 | offset += bytes; | |
10157 | ||
10158 | bytes = fwrite (buffer, 1, bytes, file); | |
10159 | if (bytes == 0) | |
10160 | perror_with_name (local_file); | |
10161 | } | |
10162 | ||
10163 | discard_cleanups (close_cleanup); | |
df39ea25 | 10164 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10165 | remote_hostio_error (remote_errno); |
10166 | ||
10167 | if (from_tty) | |
10168 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10169 | do_cleanups (back_to); | |
10170 | } | |
10171 | ||
10172 | void | |
10173 | remote_file_delete (const char *remote_file, int from_tty) | |
10174 | { | |
10175 | int retcode, remote_errno; | |
5d93a237 | 10176 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10177 | |
5d93a237 | 10178 | if (!rs->remote_desc) |
a6b151f1 DJ |
10179 | error (_("command can only be used with remote target")); |
10180 | ||
dbbca37d TT |
10181 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
10182 | remote_file, &remote_errno); | |
a6b151f1 DJ |
10183 | if (retcode == -1) |
10184 | remote_hostio_error (remote_errno); | |
10185 | ||
10186 | if (from_tty) | |
10187 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10188 | } | |
10189 | ||
10190 | static void | |
10191 | remote_put_command (char *args, int from_tty) | |
10192 | { | |
10193 | struct cleanup *back_to; | |
10194 | char **argv; | |
10195 | ||
d1a41061 PP |
10196 | if (args == NULL) |
10197 | error_no_arg (_("file to put")); | |
10198 | ||
10199 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10200 | back_to = make_cleanup_freeargv (argv); |
10201 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10202 | error (_("Invalid parameters to remote put")); | |
10203 | ||
10204 | remote_file_put (argv[0], argv[1], from_tty); | |
10205 | ||
10206 | do_cleanups (back_to); | |
10207 | } | |
10208 | ||
10209 | static void | |
10210 | remote_get_command (char *args, int from_tty) | |
10211 | { | |
10212 | struct cleanup *back_to; | |
10213 | char **argv; | |
10214 | ||
d1a41061 PP |
10215 | if (args == NULL) |
10216 | error_no_arg (_("file to get")); | |
10217 | ||
10218 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10219 | back_to = make_cleanup_freeargv (argv); |
10220 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10221 | error (_("Invalid parameters to remote get")); | |
10222 | ||
10223 | remote_file_get (argv[0], argv[1], from_tty); | |
10224 | ||
10225 | do_cleanups (back_to); | |
10226 | } | |
10227 | ||
10228 | static void | |
10229 | remote_delete_command (char *args, int from_tty) | |
10230 | { | |
10231 | struct cleanup *back_to; | |
10232 | char **argv; | |
10233 | ||
d1a41061 PP |
10234 | if (args == NULL) |
10235 | error_no_arg (_("file to delete")); | |
10236 | ||
10237 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10238 | back_to = make_cleanup_freeargv (argv); |
10239 | if (argv[0] == NULL || argv[1] != NULL) | |
10240 | error (_("Invalid parameters to remote delete")); | |
10241 | ||
10242 | remote_file_delete (argv[0], from_tty); | |
10243 | ||
10244 | do_cleanups (back_to); | |
10245 | } | |
10246 | ||
10247 | static void | |
10248 | remote_command (char *args, int from_tty) | |
10249 | { | |
10250 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10251 | } | |
10252 | ||
b2175913 | 10253 | static int |
19db3e69 | 10254 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10255 | { |
4082afcc PA |
10256 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
10257 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
10258 | return 1; |
10259 | else | |
10260 | return 0; | |
b2175913 MS |
10261 | } |
10262 | ||
74531fed | 10263 | static int |
2a9a2795 | 10264 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10265 | { |
10266 | return 1; | |
10267 | } | |
10268 | ||
03583c20 | 10269 | static int |
2bfc0540 | 10270 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10271 | { |
10272 | /* Only supported in extended mode. */ | |
10273 | return 0; | |
10274 | } | |
10275 | ||
8a305172 | 10276 | static int |
86ce2668 | 10277 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10278 | { |
10279 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10280 | |
901f9912 UW |
10281 | /* Only extended-remote handles being attached to multiple |
10282 | processes, even though plain remote can use the multi-process | |
10283 | thread id extensions, so that GDB knows the target process's | |
10284 | PID. */ | |
10285 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10286 | } |
10287 | ||
70221824 | 10288 | static int |
782b2b07 SS |
10289 | remote_supports_cond_tracepoints (void) |
10290 | { | |
4082afcc | 10291 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
10292 | } |
10293 | ||
3788aec7 | 10294 | static int |
efcc2da7 | 10295 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 10296 | { |
4082afcc | 10297 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
10298 | } |
10299 | ||
70221824 | 10300 | static int |
7a697b8d SS |
10301 | remote_supports_fast_tracepoints (void) |
10302 | { | |
4082afcc | 10303 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
10304 | } |
10305 | ||
0fb4aa4b PA |
10306 | static int |
10307 | remote_supports_static_tracepoints (void) | |
10308 | { | |
4082afcc | 10309 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
10310 | } |
10311 | ||
1e4d1764 YQ |
10312 | static int |
10313 | remote_supports_install_in_trace (void) | |
10314 | { | |
4082afcc | 10315 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
10316 | } |
10317 | ||
d248b706 | 10318 | static int |
7d178d6a | 10319 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 10320 | { |
4082afcc PA |
10321 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
10322 | == PACKET_ENABLE); | |
d248b706 KY |
10323 | } |
10324 | ||
3065dfb6 | 10325 | static int |
6de37a3a | 10326 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 10327 | { |
4082afcc | 10328 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
10329 | } |
10330 | ||
d3ce09f5 | 10331 | static int |
78eff0ec | 10332 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 10333 | { |
4082afcc | 10334 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
10335 | } |
10336 | ||
35b1e5cc | 10337 | static void |
ecae04e1 | 10338 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
10339 | { |
10340 | putpkt ("QTinit"); | |
10341 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10342 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10343 | error (_("Target does not support this command.")); |
10344 | } | |
10345 | ||
10346 | static void free_actions_list (char **actions_list); | |
10347 | static void free_actions_list_cleanup_wrapper (void *); | |
10348 | static void | |
10349 | free_actions_list_cleanup_wrapper (void *al) | |
10350 | { | |
10351 | free_actions_list (al); | |
10352 | } | |
10353 | ||
10354 | static void | |
10355 | free_actions_list (char **actions_list) | |
10356 | { | |
10357 | int ndx; | |
10358 | ||
10359 | if (actions_list == 0) | |
10360 | return; | |
10361 | ||
10362 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10363 | xfree (actions_list[ndx]); | |
10364 | ||
10365 | xfree (actions_list); | |
10366 | } | |
10367 | ||
409873ef SS |
10368 | /* Recursive routine to walk through command list including loops, and |
10369 | download packets for each command. */ | |
10370 | ||
10371 | static void | |
10372 | remote_download_command_source (int num, ULONGEST addr, | |
10373 | struct command_line *cmds) | |
10374 | { | |
10375 | struct remote_state *rs = get_remote_state (); | |
10376 | struct command_line *cmd; | |
10377 | ||
10378 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10379 | { | |
0df8b418 | 10380 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10381 | strcpy (rs->buf, "QTDPsrc:"); |
10382 | encode_source_string (num, addr, "cmd", cmd->line, | |
10383 | rs->buf + strlen (rs->buf), | |
10384 | rs->buf_size - strlen (rs->buf)); | |
10385 | putpkt (rs->buf); | |
10386 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10387 | if (strcmp (target_buf, "OK")) | |
10388 | warning (_("Target does not support source download.")); | |
10389 | ||
10390 | if (cmd->control_type == while_control | |
10391 | || cmd->control_type == while_stepping_control) | |
10392 | { | |
10393 | remote_download_command_source (num, addr, *cmd->body_list); | |
10394 | ||
0df8b418 | 10395 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10396 | strcpy (rs->buf, "QTDPsrc:"); |
10397 | encode_source_string (num, addr, "cmd", "end", | |
10398 | rs->buf + strlen (rs->buf), | |
10399 | rs->buf_size - strlen (rs->buf)); | |
10400 | putpkt (rs->buf); | |
10401 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10402 | if (strcmp (target_buf, "OK")) | |
10403 | warning (_("Target does not support source download.")); | |
10404 | } | |
10405 | } | |
10406 | } | |
10407 | ||
35b1e5cc | 10408 | static void |
548f7808 | 10409 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 10410 | { |
bba74b36 | 10411 | #define BUF_SIZE 2048 |
e8ba3115 | 10412 | |
35b1e5cc | 10413 | CORE_ADDR tpaddr; |
409873ef | 10414 | char addrbuf[40]; |
bba74b36 | 10415 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10416 | char **tdp_actions; |
10417 | char **stepping_actions; | |
10418 | int ndx; | |
10419 | struct cleanup *old_chain = NULL; | |
10420 | struct agent_expr *aexpr; | |
10421 | struct cleanup *aexpr_chain = NULL; | |
10422 | char *pkt; | |
e8ba3115 | 10423 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10424 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10425 | |
dc673c81 | 10426 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10427 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10428 | tdp_actions); | |
10429 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10430 | stepping_actions); | |
10431 | ||
10432 | tpaddr = loc->address; | |
10433 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10434 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10435 | addrbuf, /* address */ | |
10436 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10437 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10438 | /* Fast tracepoints are mostly handled by the target, but we can |
10439 | tell the target how big of an instruction block should be moved | |
10440 | around. */ | |
10441 | if (b->type == bp_fast_tracepoint) | |
10442 | { | |
10443 | /* Only test for support at download time; we may not know | |
10444 | target capabilities at definition time. */ | |
10445 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10446 | { |
e8ba3115 | 10447 | int isize; |
35b1e5cc | 10448 | |
f5656ead | 10449 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10450 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10451 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10452 | isize); | |
35b1e5cc | 10453 | else |
e8ba3115 YQ |
10454 | /* If it passed validation at definition but fails now, |
10455 | something is very wrong. */ | |
10456 | internal_error (__FILE__, __LINE__, | |
10457 | _("Fast tracepoint not " | |
10458 | "valid during download")); | |
35b1e5cc | 10459 | } |
e8ba3115 YQ |
10460 | else |
10461 | /* Fast tracepoints are functionally identical to regular | |
10462 | tracepoints, so don't take lack of support as a reason to | |
10463 | give up on the trace run. */ | |
10464 | warning (_("Target does not support fast tracepoints, " | |
10465 | "downloading %d as regular tracepoint"), b->number); | |
10466 | } | |
10467 | else if (b->type == bp_static_tracepoint) | |
10468 | { | |
10469 | /* Only test for support at download time; we may not know | |
10470 | target capabilities at definition time. */ | |
10471 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10472 | { |
e8ba3115 | 10473 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10474 | |
e8ba3115 YQ |
10475 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10476 | strcat (buf, ":S"); | |
0fb4aa4b | 10477 | else |
e8ba3115 | 10478 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10479 | } |
e8ba3115 YQ |
10480 | else |
10481 | /* Fast tracepoints are functionally identical to regular | |
10482 | tracepoints, so don't take lack of support as a reason | |
10483 | to give up on the trace run. */ | |
10484 | error (_("Target does not support static tracepoints")); | |
10485 | } | |
10486 | /* If the tracepoint has a conditional, make it into an agent | |
10487 | expression and append to the definition. */ | |
10488 | if (loc->cond) | |
10489 | { | |
10490 | /* Only test support at download time, we may not know target | |
10491 | capabilities at definition time. */ | |
10492 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10493 | { |
e8ba3115 YQ |
10494 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10495 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10496 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10497 | aexpr->len); | |
e8ba3115 YQ |
10498 | pkt = buf + strlen (buf); |
10499 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10500 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10501 | *pkt = '\0'; | |
10502 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10503 | } |
e8ba3115 YQ |
10504 | else |
10505 | warning (_("Target does not support conditional tracepoints, " | |
10506 | "ignoring tp %d cond"), b->number); | |
10507 | } | |
35b1e5cc | 10508 | |
d9b3f62e | 10509 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10510 | strcat (buf, "-"); |
10511 | putpkt (buf); | |
10512 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10513 | if (strcmp (target_buf, "OK")) | |
10514 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10515 | |
e8ba3115 YQ |
10516 | /* do_single_steps (t); */ |
10517 | if (tdp_actions) | |
10518 | { | |
10519 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10520 | { |
e8ba3115 | 10521 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10522 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10523 | b->number, addrbuf, /* address */ | |
10524 | tdp_actions[ndx], | |
10525 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10526 | ? '-' : 0)); | |
e8ba3115 YQ |
10527 | putpkt (buf); |
10528 | remote_get_noisy_reply (&target_buf, | |
10529 | &target_buf_size); | |
10530 | if (strcmp (target_buf, "OK")) | |
10531 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10532 | } |
e8ba3115 YQ |
10533 | } |
10534 | if (stepping_actions) | |
10535 | { | |
10536 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10537 | { |
e8ba3115 | 10538 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10539 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10540 | b->number, addrbuf, /* address */ | |
10541 | ((ndx == 0) ? "S" : ""), | |
10542 | stepping_actions[ndx], | |
10543 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10544 | putpkt (buf); |
10545 | remote_get_noisy_reply (&target_buf, | |
10546 | &target_buf_size); | |
10547 | if (strcmp (target_buf, "OK")) | |
10548 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10549 | } |
e8ba3115 | 10550 | } |
409873ef | 10551 | |
4082afcc | 10552 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 YQ |
10553 | { |
10554 | if (b->addr_string) | |
409873ef | 10555 | { |
e8ba3115 YQ |
10556 | strcpy (buf, "QTDPsrc:"); |
10557 | encode_source_string (b->number, loc->address, | |
10558 | "at", b->addr_string, buf + strlen (buf), | |
10559 | 2048 - strlen (buf)); | |
409873ef | 10560 | |
e8ba3115 YQ |
10561 | putpkt (buf); |
10562 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10563 | if (strcmp (target_buf, "OK")) | |
10564 | warning (_("Target does not support source download.")); | |
409873ef | 10565 | } |
e8ba3115 YQ |
10566 | if (b->cond_string) |
10567 | { | |
10568 | strcpy (buf, "QTDPsrc:"); | |
10569 | encode_source_string (b->number, loc->address, | |
10570 | "cond", b->cond_string, buf + strlen (buf), | |
10571 | 2048 - strlen (buf)); | |
10572 | putpkt (buf); | |
10573 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10574 | if (strcmp (target_buf, "OK")) | |
10575 | warning (_("Target does not support source download.")); | |
10576 | } | |
10577 | remote_download_command_source (b->number, loc->address, | |
10578 | breakpoint_commands (b)); | |
35b1e5cc | 10579 | } |
e8ba3115 YQ |
10580 | |
10581 | do_cleanups (old_chain); | |
35b1e5cc SS |
10582 | } |
10583 | ||
1e4d1764 | 10584 | static int |
a52a8357 | 10585 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 10586 | { |
1e51243a PA |
10587 | struct remote_state *rs = get_remote_state (); |
10588 | struct trace_status *ts; | |
10589 | int status; | |
10590 | ||
10591 | /* Don't try to install tracepoints until we've relocated our | |
10592 | symbols, and fetched and merged the target's tracepoint list with | |
10593 | ours. */ | |
10594 | if (rs->starting_up) | |
10595 | return 0; | |
10596 | ||
10597 | ts = current_trace_status (); | |
8bd200f1 | 10598 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
10599 | |
10600 | if (status == -1 || !ts->running_known || !ts->running) | |
10601 | return 0; | |
10602 | ||
10603 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10604 | installing tracepoint in trace, we have to return. */ | |
10605 | if (!remote_supports_install_in_trace ()) | |
10606 | return 0; | |
10607 | ||
10608 | return 1; | |
10609 | } | |
10610 | ||
10611 | ||
35b1e5cc | 10612 | static void |
559d2b81 TT |
10613 | remote_download_trace_state_variable (struct target_ops *self, |
10614 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
10615 | { |
10616 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10617 | char *p; |
35b1e5cc | 10618 | |
bba74b36 YQ |
10619 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10620 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10621 | tsv->builtin); | |
00bf0b85 SS |
10622 | p = rs->buf + strlen (rs->buf); |
10623 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10624 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 10625 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 10626 | *p++ = '\0'; |
35b1e5cc SS |
10627 | putpkt (rs->buf); |
10628 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10629 | if (*target_buf == '\0') |
10630 | error (_("Target does not support this command.")); | |
10631 | if (strcmp (target_buf, "OK") != 0) | |
10632 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10633 | } |
10634 | ||
d248b706 | 10635 | static void |
46670d57 TT |
10636 | remote_enable_tracepoint (struct target_ops *self, |
10637 | struct bp_location *location) | |
d248b706 KY |
10638 | { |
10639 | struct remote_state *rs = get_remote_state (); | |
10640 | char addr_buf[40]; | |
10641 | ||
10642 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10643 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10644 | location->owner->number, addr_buf); | |
d248b706 KY |
10645 | putpkt (rs->buf); |
10646 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10647 | if (*rs->buf == '\0') | |
10648 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10649 | if (strcmp (rs->buf, "OK") != 0) | |
10650 | error (_("Error on target while enabling tracepoint.")); | |
10651 | } | |
10652 | ||
10653 | static void | |
780b049c TT |
10654 | remote_disable_tracepoint (struct target_ops *self, |
10655 | struct bp_location *location) | |
d248b706 KY |
10656 | { |
10657 | struct remote_state *rs = get_remote_state (); | |
10658 | char addr_buf[40]; | |
10659 | ||
10660 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10661 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10662 | location->owner->number, addr_buf); | |
d248b706 KY |
10663 | putpkt (rs->buf); |
10664 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10665 | if (*rs->buf == '\0') | |
10666 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10667 | if (strcmp (rs->buf, "OK") != 0) | |
10668 | error (_("Error on target while disabling tracepoint.")); | |
10669 | } | |
10670 | ||
35b1e5cc | 10671 | static void |
583f9a86 | 10672 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
10673 | { |
10674 | asection *s; | |
81b9b86e | 10675 | bfd *abfd = NULL; |
35b1e5cc | 10676 | bfd_size_type size; |
608bcef2 | 10677 | bfd_vma vma; |
35b1e5cc | 10678 | int anysecs = 0; |
c2fa21f1 | 10679 | int offset = 0; |
35b1e5cc SS |
10680 | |
10681 | if (!exec_bfd) | |
10682 | return; /* No information to give. */ | |
10683 | ||
10684 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10685 | offset = strlen (target_buf); |
35b1e5cc SS |
10686 | for (s = exec_bfd->sections; s; s = s->next) |
10687 | { | |
10688 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10689 | int sec_length; |
35b1e5cc SS |
10690 | |
10691 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10692 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10693 | (s->flags & SEC_READONLY) == 0) |
10694 | continue; | |
10695 | ||
10696 | anysecs = 1; | |
81b9b86e | 10697 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10698 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10699 | sprintf_vma (tmp1, vma); |
10700 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10701 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10702 | if (offset + sec_length + 1 > target_buf_size) | |
10703 | { | |
4082afcc | 10704 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 10705 | warning (_("\ |
c2fa21f1 HZ |
10706 | Too many sections for read-only sections definition packet.")); |
10707 | break; | |
10708 | } | |
bba74b36 YQ |
10709 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10710 | tmp1, tmp2); | |
c2fa21f1 | 10711 | offset += sec_length; |
35b1e5cc SS |
10712 | } |
10713 | if (anysecs) | |
10714 | { | |
10715 | putpkt (target_buf); | |
10716 | getpkt (&target_buf, &target_buf_size, 0); | |
10717 | } | |
10718 | } | |
10719 | ||
10720 | static void | |
e2d1aae3 | 10721 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
10722 | { |
10723 | putpkt ("QTStart"); | |
10724 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10725 | if (*target_buf == '\0') |
10726 | error (_("Target does not support this command.")); | |
10727 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10728 | error (_("Bogus reply from target: %s"), target_buf); |
10729 | } | |
10730 | ||
10731 | static int | |
8bd200f1 | 10732 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 10733 | { |
953b98d1 | 10734 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10735 | char *p = NULL; |
0df8b418 | 10736 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10737 | extern int trace_regblock_size; |
67f41397 | 10738 | volatile struct gdb_exception ex; |
bd3eecc3 PA |
10739 | enum packet_result result; |
10740 | ||
4082afcc | 10741 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 10742 | return -1; |
a744cf53 | 10743 | |
00bf0b85 SS |
10744 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10745 | ||
049dc89b JK |
10746 | putpkt ("qTStatus"); |
10747 | ||
67f41397 JK |
10748 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
10749 | { | |
10750 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10751 | } | |
10752 | if (ex.reason < 0) | |
10753 | { | |
598d3636 JK |
10754 | if (ex.error != TARGET_CLOSE_ERROR) |
10755 | { | |
10756 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10757 | return -1; | |
10758 | } | |
10759 | throw_exception (ex); | |
67f41397 | 10760 | } |
00bf0b85 | 10761 | |
bd3eecc3 PA |
10762 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10763 | ||
00bf0b85 | 10764 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10765 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10766 | return -1; |
35b1e5cc | 10767 | |
00bf0b85 | 10768 | /* We're working with a live target. */ |
f5911ea1 | 10769 | ts->filename = NULL; |
00bf0b85 | 10770 | |
00bf0b85 | 10771 | if (*p++ != 'T') |
35b1e5cc SS |
10772 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10773 | ||
84cebc4a YQ |
10774 | /* Function 'parse_trace_status' sets default value of each field of |
10775 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10776 | parse_trace_status (p, ts); |
10777 | ||
10778 | return ts->running; | |
35b1e5cc SS |
10779 | } |
10780 | ||
70221824 | 10781 | static void |
db90e85c | 10782 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
10783 | struct uploaded_tp *utp) |
10784 | { | |
10785 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10786 | char *reply; |
10787 | struct bp_location *loc; | |
10788 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10789 | size_t size = get_remote_packet_size (); |
f196051f SS |
10790 | |
10791 | if (tp) | |
10792 | { | |
10793 | tp->base.hit_count = 0; | |
10794 | tp->traceframe_usage = 0; | |
10795 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10796 | { | |
10797 | /* If the tracepoint was never downloaded, don't go asking for | |
10798 | any status. */ | |
10799 | if (tp->number_on_target == 0) | |
10800 | continue; | |
bba74b36 YQ |
10801 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10802 | phex_nz (loc->address, 0)); | |
f196051f SS |
10803 | putpkt (rs->buf); |
10804 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10805 | if (reply && *reply) | |
10806 | { | |
10807 | if (*reply == 'V') | |
10808 | parse_tracepoint_status (reply + 1, bp, utp); | |
10809 | } | |
10810 | } | |
10811 | } | |
10812 | else if (utp) | |
10813 | { | |
10814 | utp->hit_count = 0; | |
10815 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10816 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10817 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10818 | putpkt (rs->buf); |
10819 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10820 | if (reply && *reply) | |
10821 | { | |
10822 | if (*reply == 'V') | |
10823 | parse_tracepoint_status (reply + 1, bp, utp); | |
10824 | } | |
10825 | } | |
10826 | } | |
10827 | ||
35b1e5cc | 10828 | static void |
74499f1b | 10829 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
10830 | { |
10831 | putpkt ("QTStop"); | |
10832 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10833 | if (*target_buf == '\0') |
10834 | error (_("Target does not support this command.")); | |
10835 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10836 | error (_("Bogus reply from target: %s"), target_buf); |
10837 | } | |
10838 | ||
10839 | static int | |
bd4c6793 TT |
10840 | remote_trace_find (struct target_ops *self, |
10841 | enum trace_find_type type, int num, | |
cc5925ad | 10842 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
10843 | int *tpp) |
10844 | { | |
10845 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10846 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10847 | char *p, *reply; |
10848 | int target_frameno = -1, target_tracept = -1; | |
10849 | ||
e6e4e701 PA |
10850 | /* Lookups other than by absolute frame number depend on the current |
10851 | trace selected, so make sure it is correct on the remote end | |
10852 | first. */ | |
10853 | if (type != tfind_number) | |
10854 | set_remote_traceframe (); | |
10855 | ||
35b1e5cc SS |
10856 | p = rs->buf; |
10857 | strcpy (p, "QTFrame:"); | |
10858 | p = strchr (p, '\0'); | |
10859 | switch (type) | |
10860 | { | |
10861 | case tfind_number: | |
bba74b36 | 10862 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10863 | break; |
10864 | case tfind_pc: | |
bba74b36 | 10865 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10866 | break; |
10867 | case tfind_tp: | |
bba74b36 | 10868 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10869 | break; |
10870 | case tfind_range: | |
bba74b36 YQ |
10871 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10872 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10873 | break; |
10874 | case tfind_outside: | |
bba74b36 YQ |
10875 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10876 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10877 | break; |
10878 | default: | |
9b20d036 | 10879 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10880 | } |
10881 | ||
10882 | putpkt (rs->buf); | |
2f65bcb7 | 10883 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
10884 | if (*reply == '\0') |
10885 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10886 | |
10887 | while (reply && *reply) | |
10888 | switch (*reply) | |
10889 | { | |
10890 | case 'F': | |
f197e0f1 VP |
10891 | p = ++reply; |
10892 | target_frameno = (int) strtol (p, &reply, 16); | |
10893 | if (reply == p) | |
10894 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10895 | /* Don't update our remote traceframe number cache on failure |
10896 | to select a remote traceframe. */ | |
f197e0f1 VP |
10897 | if (target_frameno == -1) |
10898 | return -1; | |
35b1e5cc SS |
10899 | break; |
10900 | case 'T': | |
f197e0f1 VP |
10901 | p = ++reply; |
10902 | target_tracept = (int) strtol (p, &reply, 16); | |
10903 | if (reply == p) | |
10904 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10905 | break; |
10906 | case 'O': /* "OK"? */ | |
10907 | if (reply[1] == 'K' && reply[2] == '\0') | |
10908 | reply += 2; | |
10909 | else | |
10910 | error (_("Bogus reply from target: %s"), reply); | |
10911 | break; | |
10912 | default: | |
10913 | error (_("Bogus reply from target: %s"), reply); | |
10914 | } | |
10915 | if (tpp) | |
10916 | *tpp = target_tracept; | |
e6e4e701 | 10917 | |
262e1174 | 10918 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
10919 | return target_frameno; |
10920 | } | |
10921 | ||
10922 | static int | |
4011015b TT |
10923 | remote_get_trace_state_variable_value (struct target_ops *self, |
10924 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
10925 | { |
10926 | struct remote_state *rs = get_remote_state (); | |
10927 | char *reply; | |
10928 | ULONGEST uval; | |
10929 | ||
e6e4e701 PA |
10930 | set_remote_traceframe (); |
10931 | ||
bba74b36 | 10932 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10933 | putpkt (rs->buf); |
10934 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10935 | if (reply && *reply) | |
10936 | { | |
10937 | if (*reply == 'V') | |
10938 | { | |
10939 | unpack_varlen_hex (reply + 1, &uval); | |
10940 | *val = (LONGEST) uval; | |
10941 | return 1; | |
10942 | } | |
10943 | } | |
10944 | return 0; | |
10945 | } | |
10946 | ||
00bf0b85 | 10947 | static int |
dc3decaf | 10948 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
10949 | { |
10950 | struct remote_state *rs = get_remote_state (); | |
10951 | char *p, *reply; | |
10952 | ||
10953 | p = rs->buf; | |
10954 | strcpy (p, "QTSave:"); | |
10955 | p += strlen (p); | |
10956 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10957 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 10958 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
10959 | *p++ = '\0'; |
10960 | putpkt (rs->buf); | |
ad91cd99 | 10961 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10962 | if (*reply == '\0') |
ad91cd99 PA |
10963 | error (_("Target does not support this command.")); |
10964 | if (strcmp (reply, "OK") != 0) | |
10965 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10966 | return 0; |
10967 | } | |
10968 | ||
10969 | /* This is basically a memory transfer, but needs to be its own packet | |
10970 | because we don't know how the target actually organizes its trace | |
10971 | memory, plus we want to be able to ask for as much as possible, but | |
10972 | not be unhappy if we don't get as much as we ask for. */ | |
10973 | ||
10974 | static LONGEST | |
88ee6f45 TT |
10975 | remote_get_raw_trace_data (struct target_ops *self, |
10976 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
10977 | { |
10978 | struct remote_state *rs = get_remote_state (); | |
10979 | char *reply; | |
10980 | char *p; | |
10981 | int rslt; | |
10982 | ||
10983 | p = rs->buf; | |
10984 | strcpy (p, "qTBuffer:"); | |
10985 | p += strlen (p); | |
10986 | p += hexnumstr (p, offset); | |
10987 | *p++ = ','; | |
10988 | p += hexnumstr (p, len); | |
10989 | *p++ = '\0'; | |
10990 | ||
10991 | putpkt (rs->buf); | |
10992 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10993 | if (reply && *reply) | |
10994 | { | |
10995 | /* 'l' by itself means we're at the end of the buffer and | |
10996 | there is nothing more to get. */ | |
10997 | if (*reply == 'l') | |
10998 | return 0; | |
10999 | ||
11000 | /* Convert the reply into binary. Limit the number of bytes to | |
11001 | convert according to our passed-in buffer size, rather than | |
11002 | what was returned in the packet; if the target is | |
11003 | unexpectedly generous and gives us a bigger reply than we | |
11004 | asked for, we don't want to crash. */ | |
11005 | rslt = hex2bin (target_buf, buf, len); | |
11006 | return rslt; | |
11007 | } | |
11008 | ||
11009 | /* Something went wrong, flag as an error. */ | |
11010 | return -1; | |
11011 | } | |
11012 | ||
35b1e5cc | 11013 | static void |
37b25738 | 11014 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11015 | { |
11016 | struct remote_state *rs = get_remote_state (); | |
11017 | ||
4082afcc | 11018 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11019 | { |
ad91cd99 PA |
11020 | char *reply; |
11021 | ||
bba74b36 | 11022 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11023 | putpkt (rs->buf); |
ad91cd99 PA |
11024 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11025 | if (*reply == '\0') | |
33da3f1c | 11026 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11027 | if (strcmp (reply, "OK") != 0) |
11028 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11029 | } |
11030 | else if (val) | |
11031 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11032 | } |
11033 | ||
dc146f7c VP |
11034 | static int |
11035 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11036 | { | |
11037 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11038 | |
dc146f7c VP |
11039 | if (info && info->private) |
11040 | return info->private->core; | |
11041 | return -1; | |
11042 | } | |
11043 | ||
4daf5ac0 | 11044 | static void |
736d5b1f | 11045 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11046 | { |
11047 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11048 | char *reply; |
4daf5ac0 | 11049 | |
bba74b36 | 11050 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11051 | putpkt (rs->buf); |
ad91cd99 PA |
11052 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11053 | if (*reply == '\0') | |
4daf5ac0 | 11054 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11055 | if (strcmp (reply, "OK") != 0) |
11056 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11057 | } |
11058 | ||
b3b9301e | 11059 | static struct traceframe_info * |
a893e81f | 11060 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
11061 | { |
11062 | char *text; | |
11063 | ||
11064 | text = target_read_stralloc (¤t_target, | |
11065 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11066 | if (text != NULL) | |
11067 | { | |
11068 | struct traceframe_info *info; | |
11069 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11070 | ||
11071 | info = parse_traceframe_info (text); | |
11072 | do_cleanups (back_to); | |
11073 | return info; | |
11074 | } | |
11075 | ||
11076 | return NULL; | |
11077 | } | |
11078 | ||
405f8e94 SS |
11079 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11080 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11081 | if the packet is not supported, and 0 if the minimum instruction | |
11082 | length is unknown. */ | |
11083 | ||
11084 | static int | |
0e67620a | 11085 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
11086 | { |
11087 | struct remote_state *rs = get_remote_state (); | |
11088 | char *reply; | |
11089 | ||
e886a173 PA |
11090 | /* If we're not debugging a process yet, the IPA can't be |
11091 | loaded. */ | |
11092 | if (!target_has_execution) | |
11093 | return 0; | |
11094 | ||
11095 | /* Make sure the remote is pointing at the right process. */ | |
11096 | set_general_process (); | |
11097 | ||
bba74b36 | 11098 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11099 | putpkt (rs->buf); |
11100 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11101 | if (*reply == '\0') | |
11102 | return -1; | |
11103 | else | |
11104 | { | |
11105 | ULONGEST min_insn_len; | |
11106 | ||
11107 | unpack_varlen_hex (reply, &min_insn_len); | |
11108 | ||
11109 | return (int) min_insn_len; | |
11110 | } | |
11111 | } | |
11112 | ||
f6f899bf | 11113 | static void |
4da384be | 11114 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 11115 | { |
4082afcc | 11116 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
11117 | { |
11118 | struct remote_state *rs = get_remote_state (); | |
11119 | char *buf = rs->buf; | |
11120 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11121 | enum packet_result result; | |
11122 | ||
11123 | gdb_assert (val >= 0 || val == -1); | |
11124 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11125 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11126 | if (val < 0) | |
11127 | { | |
11128 | *buf++ = '-'; | |
11129 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11130 | } | |
11131 | else | |
11132 | buf += hexnumstr (buf, (ULONGEST) val); | |
11133 | ||
11134 | putpkt (rs->buf); | |
11135 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11136 | result = packet_ok (rs->buf, | |
11137 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11138 | ||
11139 | if (result != PACKET_OK) | |
11140 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11141 | } | |
11142 | } | |
11143 | ||
f196051f | 11144 | static int |
d9e68a2c TT |
11145 | remote_set_trace_notes (struct target_ops *self, |
11146 | const char *user, const char *notes, | |
ca623f82 | 11147 | const char *stop_notes) |
f196051f SS |
11148 | { |
11149 | struct remote_state *rs = get_remote_state (); | |
11150 | char *reply; | |
11151 | char *buf = rs->buf; | |
11152 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11153 | int nbytes; | |
11154 | ||
11155 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11156 | if (user) | |
11157 | { | |
11158 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11159 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11160 | buf += 2 * nbytes; |
11161 | *buf++ = ';'; | |
11162 | } | |
11163 | if (notes) | |
11164 | { | |
11165 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11166 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11167 | buf += 2 * nbytes; |
11168 | *buf++ = ';'; | |
11169 | } | |
11170 | if (stop_notes) | |
11171 | { | |
11172 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11173 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11174 | buf += 2 * nbytes; |
11175 | *buf++ = ';'; | |
11176 | } | |
11177 | /* Ensure the buffer is terminated. */ | |
11178 | *buf = '\0'; | |
11179 | ||
11180 | putpkt (rs->buf); | |
11181 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11182 | if (*reply == '\0') | |
11183 | return 0; | |
11184 | ||
11185 | if (strcmp (reply, "OK") != 0) | |
11186 | error (_("Bogus reply from target: %s"), reply); | |
11187 | ||
11188 | return 1; | |
11189 | } | |
11190 | ||
d1feda86 | 11191 | static int |
2c152180 | 11192 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 11193 | { |
4082afcc | 11194 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
11195 | { |
11196 | struct remote_state *rs = get_remote_state (); | |
11197 | ||
11198 | /* If the stub supports QAgent. */ | |
bba74b36 | 11199 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11200 | putpkt (rs->buf); |
11201 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11202 | ||
11203 | if (strcmp (rs->buf, "OK") == 0) | |
11204 | { | |
11205 | use_agent = use; | |
11206 | return 1; | |
11207 | } | |
11208 | } | |
11209 | ||
11210 | return 0; | |
11211 | } | |
11212 | ||
11213 | static int | |
fe38f897 | 11214 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 11215 | { |
4082afcc | 11216 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
11217 | } |
11218 | ||
9accd112 MM |
11219 | struct btrace_target_info |
11220 | { | |
11221 | /* The ptid of the traced thread. */ | |
11222 | ptid_t ptid; | |
11223 | }; | |
11224 | ||
11225 | /* Check whether the target supports branch tracing. */ | |
11226 | ||
11227 | static int | |
46917d26 | 11228 | remote_supports_btrace (struct target_ops *self) |
9accd112 | 11229 | { |
4082afcc | 11230 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 11231 | return 0; |
4082afcc | 11232 | if (packet_support (PACKET_Qbtrace_bts) != PACKET_ENABLE) |
9accd112 | 11233 | return 0; |
4082afcc | 11234 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
11235 | return 0; |
11236 | ||
11237 | return 1; | |
11238 | } | |
11239 | ||
11240 | /* Enable branch tracing. */ | |
11241 | ||
11242 | static struct btrace_target_info * | |
e3c49f88 | 11243 | remote_enable_btrace (struct target_ops *self, ptid_t ptid) |
9accd112 MM |
11244 | { |
11245 | struct btrace_target_info *tinfo = NULL; | |
11246 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11247 | struct remote_state *rs = get_remote_state (); | |
11248 | char *buf = rs->buf; | |
11249 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11250 | ||
4082afcc | 11251 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11252 | error (_("Target does not support branch tracing.")); |
11253 | ||
11254 | set_general_thread (ptid); | |
11255 | ||
11256 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11257 | putpkt (rs->buf); | |
11258 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11259 | ||
11260 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11261 | { | |
11262 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11263 | error (_("Could not enable branch tracing for %s: %s"), | |
11264 | target_pid_to_str (ptid), rs->buf + 2); | |
11265 | else | |
11266 | error (_("Could not enable branch tracing for %s."), | |
11267 | target_pid_to_str (ptid)); | |
11268 | } | |
11269 | ||
11270 | tinfo = xzalloc (sizeof (*tinfo)); | |
11271 | tinfo->ptid = ptid; | |
11272 | ||
11273 | return tinfo; | |
11274 | } | |
11275 | ||
11276 | /* Disable branch tracing. */ | |
11277 | ||
11278 | static void | |
25e95349 TT |
11279 | remote_disable_btrace (struct target_ops *self, |
11280 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11281 | { |
11282 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11283 | struct remote_state *rs = get_remote_state (); | |
11284 | char *buf = rs->buf; | |
11285 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11286 | ||
4082afcc | 11287 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11288 | error (_("Target does not support branch tracing.")); |
11289 | ||
11290 | set_general_thread (tinfo->ptid); | |
11291 | ||
11292 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11293 | putpkt (rs->buf); | |
11294 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11295 | ||
11296 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11297 | { | |
11298 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11299 | error (_("Could not disable branch tracing for %s: %s"), | |
11300 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11301 | else | |
11302 | error (_("Could not disable branch tracing for %s."), | |
11303 | target_pid_to_str (tinfo->ptid)); | |
11304 | } | |
11305 | ||
11306 | xfree (tinfo); | |
11307 | } | |
11308 | ||
11309 | /* Teardown branch tracing. */ | |
11310 | ||
11311 | static void | |
1777056d TT |
11312 | remote_teardown_btrace (struct target_ops *self, |
11313 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11314 | { |
11315 | /* We must not talk to the target during teardown. */ | |
11316 | xfree (tinfo); | |
11317 | } | |
11318 | ||
11319 | /* Read the branch trace. */ | |
11320 | ||
969c39fb | 11321 | static enum btrace_error |
39c49f83 TT |
11322 | remote_read_btrace (struct target_ops *self, |
11323 | VEC (btrace_block_s) **btrace, | |
969c39fb | 11324 | struct btrace_target_info *tinfo, |
9accd112 MM |
11325 | enum btrace_read_type type) |
11326 | { | |
11327 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11328 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 11329 | struct cleanup *cleanup; |
9accd112 MM |
11330 | const char *annex; |
11331 | char *xml; | |
11332 | ||
4082afcc | 11333 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11334 | error (_("Target does not support branch tracing.")); |
11335 | ||
11336 | #if !defined(HAVE_LIBEXPAT) | |
11337 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11338 | #endif | |
11339 | ||
11340 | switch (type) | |
11341 | { | |
864089d2 | 11342 | case BTRACE_READ_ALL: |
9accd112 MM |
11343 | annex = "all"; |
11344 | break; | |
864089d2 | 11345 | case BTRACE_READ_NEW: |
9accd112 MM |
11346 | annex = "new"; |
11347 | break; | |
969c39fb MM |
11348 | case BTRACE_READ_DELTA: |
11349 | annex = "delta"; | |
11350 | break; | |
9accd112 MM |
11351 | default: |
11352 | internal_error (__FILE__, __LINE__, | |
11353 | _("Bad branch tracing read type: %u."), | |
11354 | (unsigned int) type); | |
11355 | } | |
11356 | ||
11357 | xml = target_read_stralloc (¤t_target, | |
11358 | TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
11359 | if (xml == NULL) |
11360 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 11361 | |
969c39fb MM |
11362 | cleanup = make_cleanup (xfree, xml); |
11363 | *btrace = parse_xml_btrace (xml); | |
11364 | do_cleanups (cleanup); | |
9accd112 | 11365 | |
969c39fb | 11366 | return BTRACE_ERR_NONE; |
9accd112 MM |
11367 | } |
11368 | ||
ced63ec0 | 11369 | static int |
5436ff03 | 11370 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 11371 | { |
4082afcc PA |
11372 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
11373 | == PACKET_ENABLE); | |
ced63ec0 GB |
11374 | } |
11375 | ||
9dd130a0 TT |
11376 | /* Implementation of to_load. */ |
11377 | ||
11378 | static void | |
71a9f134 | 11379 | remote_load (struct target_ops *self, char *name, int from_tty) |
9dd130a0 TT |
11380 | { |
11381 | generic_load (name, from_tty); | |
11382 | } | |
11383 | ||
c906108c | 11384 | static void |
fba45db2 | 11385 | init_remote_ops (void) |
c906108c | 11386 | { |
c5aa993b | 11387 | remote_ops.to_shortname = "remote"; |
c906108c | 11388 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11389 | remote_ops.to_doc = |
c906108c | 11390 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11391 | Specify the serial device it is connected to\n\ |
11392 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11393 | remote_ops.to_open = remote_open; |
11394 | remote_ops.to_close = remote_close; | |
c906108c | 11395 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11396 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11397 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11398 | remote_ops.to_wait = remote_wait; |
11399 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11400 | remote_ops.to_store_registers = remote_store_registers; | |
11401 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11402 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11403 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11404 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11405 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11406 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11407 | remote_ops.to_watchpoint_addr_within_range = |
11408 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11409 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11410 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11411 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11412 | remote_ops.to_region_ok_for_hw_watchpoint |
11413 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11414 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11415 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 11416 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 11417 | remote_ops.to_load = remote_load; |
c906108c | 11418 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11419 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11420 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11421 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11422 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11423 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11424 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11425 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11426 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11427 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11428 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11429 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11430 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11431 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11432 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11433 | remote_ops.to_has_memory = default_child_has_memory; | |
11434 | remote_ops.to_has_stack = default_child_has_stack; | |
11435 | remote_ops.to_has_registers = default_child_has_registers; | |
11436 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11437 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11438 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11439 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11440 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11441 | remote_ops.to_flash_erase = remote_flash_erase; |
11442 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11443 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11444 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11445 | remote_ops.to_can_async_p = remote_can_async_p; |
11446 | remote_ops.to_is_async_p = remote_is_async_p; | |
11447 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11448 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11449 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11450 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11451 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11452 | remote_ops.to_supports_disable_randomization |
11453 | = remote_supports_disable_randomization; | |
7313baad UW |
11454 | remote_ops.to_fileio_open = remote_hostio_open; |
11455 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11456 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11457 | remote_ops.to_fileio_close = remote_hostio_close; | |
11458 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11459 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11460 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11461 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11462 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11463 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11464 | remote_ops.to_trace_init = remote_trace_init; |
11465 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11466 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11467 | remote_ops.to_download_trace_state_variable |
11468 | = remote_download_trace_state_variable; | |
d248b706 KY |
11469 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11470 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11471 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11472 | remote_ops.to_trace_start = remote_trace_start; | |
11473 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11474 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11475 | remote_ops.to_trace_stop = remote_trace_stop; |
11476 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11477 | remote_ops.to_get_trace_state_variable_value |
11478 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11479 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11480 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11481 | remote_ops.to_upload_trace_state_variables |
11482 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11483 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11484 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11485 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11486 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11487 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11488 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11489 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11490 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11491 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11492 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11493 | remote_ops.to_static_tracepoint_marker_at |
11494 | = remote_static_tracepoint_marker_at; | |
11495 | remote_ops.to_static_tracepoint_markers_by_strid | |
11496 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11497 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11498 | remote_ops.to_use_agent = remote_use_agent; |
11499 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11500 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11501 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11502 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11503 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11504 | remote_ops.to_read_btrace = remote_read_btrace; | |
ced63ec0 GB |
11505 | remote_ops.to_augmented_libraries_svr4_read = |
11506 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11507 | } |
11508 | ||
11509 | /* Set up the extended remote vector by making a copy of the standard | |
11510 | remote vector and adding to it. */ | |
11511 | ||
11512 | static void | |
fba45db2 | 11513 | init_extended_remote_ops (void) |
c906108c SS |
11514 | { |
11515 | extended_remote_ops = remote_ops; | |
11516 | ||
0f71a2f6 | 11517 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11518 | extended_remote_ops.to_longname = |
c906108c | 11519 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11520 | extended_remote_ops.to_doc = |
c906108c | 11521 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11522 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11523 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11524 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11525 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11526 | extended_remote_ops.to_detach = extended_remote_detach; |
11527 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11528 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11529 | extended_remote_ops.to_supports_disable_randomization |
11530 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11531 | } |
11532 | ||
6426a772 | 11533 | static int |
6a109b6b | 11534 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 11535 | { |
5d93a237 TT |
11536 | struct remote_state *rs = get_remote_state (); |
11537 | ||
c6ebd6cf | 11538 | if (!target_async_permitted) |
75c99385 PA |
11539 | /* We only enable async when the user specifically asks for it. */ |
11540 | return 0; | |
11541 | ||
23860348 | 11542 | /* We're async whenever the serial device is. */ |
5d93a237 | 11543 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11544 | } |
11545 | ||
11546 | static int | |
6a109b6b | 11547 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 11548 | { |
5d93a237 TT |
11549 | struct remote_state *rs = get_remote_state (); |
11550 | ||
c6ebd6cf | 11551 | if (!target_async_permitted) |
75c99385 PA |
11552 | /* We only enable async when the user specifically asks for it. */ |
11553 | return 0; | |
11554 | ||
23860348 | 11555 | /* We're async whenever the serial device is. */ |
5d93a237 | 11556 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11557 | } |
11558 | ||
2acceee2 JM |
11559 | /* Pass the SERIAL event on and up to the client. One day this code |
11560 | will be able to delay notifying the client of an event until the | |
23860348 | 11561 | point where an entire packet has been received. */ |
2acceee2 | 11562 | |
2acceee2 JM |
11563 | static serial_event_ftype remote_async_serial_handler; |
11564 | ||
6426a772 | 11565 | static void |
819cc324 | 11566 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11567 | { |
88b496c3 TT |
11568 | struct remote_state *rs = context; |
11569 | ||
2acceee2 JM |
11570 | /* Don't propogate error information up to the client. Instead let |
11571 | the client find out about the error by querying the target. */ | |
88b496c3 | 11572 | rs->async_client_callback (INF_REG_EVENT, rs->async_client_context); |
2acceee2 JM |
11573 | } |
11574 | ||
74531fed PA |
11575 | static void |
11576 | remote_async_inferior_event_handler (gdb_client_data data) | |
11577 | { | |
11578 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11579 | } | |
11580 | ||
2acceee2 | 11581 | static void |
6a109b6b TT |
11582 | remote_async (struct target_ops *ops, |
11583 | void (*callback) (enum inferior_event_type event_type, | |
11584 | void *context), | |
11585 | void *context) | |
2acceee2 | 11586 | { |
5d93a237 TT |
11587 | struct remote_state *rs = get_remote_state (); |
11588 | ||
2acceee2 JM |
11589 | if (callback != NULL) |
11590 | { | |
88b496c3 TT |
11591 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
11592 | rs->async_client_callback = callback; | |
11593 | rs->async_client_context = context; | |
2acceee2 JM |
11594 | } |
11595 | else | |
5d93a237 | 11596 | serial_async (rs->remote_desc, NULL, NULL); |
6426a772 JM |
11597 | } |
11598 | ||
5a2468f5 | 11599 | static void |
c2d11a7d | 11600 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11601 | { |
427c3a89 | 11602 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11603 | } |
11604 | ||
d471ea57 AC |
11605 | static void |
11606 | show_remote_cmd (char *args, int from_tty) | |
11607 | { | |
37a105a1 | 11608 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11609 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11610 | struct cleanup *showlist_chain; |
11611 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11612 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11613 | |
11614 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11615 | for (; list != NULL; list = list->next) | |
11616 | if (strcmp (list->name, "Z-packet") == 0) | |
11617 | continue; | |
427c3a89 DJ |
11618 | else if (list->type == not_set_cmd) |
11619 | /* Alias commands are exactly like the original, except they | |
11620 | don't have the normal type. */ | |
11621 | continue; | |
11622 | else | |
37a105a1 DJ |
11623 | { |
11624 | struct cleanup *option_chain | |
11625 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11626 | |
37a105a1 DJ |
11627 | ui_out_field_string (uiout, "name", list->name); |
11628 | ui_out_text (uiout, ": "); | |
427c3a89 | 11629 | if (list->type == show_cmd) |
5b9afe8a | 11630 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11631 | else |
11632 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11633 | /* Close the tuple. */ |
11634 | do_cleanups (option_chain); | |
11635 | } | |
427c3a89 DJ |
11636 | |
11637 | /* Close the tuple. */ | |
11638 | do_cleanups (showlist_chain); | |
d471ea57 | 11639 | } |
5a2468f5 | 11640 | |
0f71a2f6 | 11641 | |
23860348 | 11642 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11643 | static void |
11644 | remote_new_objfile (struct objfile *objfile) | |
11645 | { | |
5d93a237 TT |
11646 | struct remote_state *rs = get_remote_state (); |
11647 | ||
11648 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11649 | remote_check_symbols (); |
dc8acb97 MS |
11650 | } |
11651 | ||
00bf0b85 SS |
11652 | /* Pull all the tracepoints defined on the target and create local |
11653 | data structures representing them. We don't want to create real | |
11654 | tracepoints yet, we don't want to mess up the user's existing | |
11655 | collection. */ | |
11656 | ||
11657 | static int | |
ab6617cc | 11658 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 11659 | { |
00bf0b85 SS |
11660 | struct remote_state *rs = get_remote_state (); |
11661 | char *p; | |
d5551862 | 11662 | |
00bf0b85 SS |
11663 | /* Ask for a first packet of tracepoint definition. */ |
11664 | putpkt ("qTfP"); | |
11665 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11666 | p = rs->buf; | |
11667 | while (*p && *p != 'l') | |
d5551862 | 11668 | { |
00bf0b85 SS |
11669 | parse_tracepoint_definition (p, utpp); |
11670 | /* Ask for another packet of tracepoint definition. */ | |
11671 | putpkt ("qTsP"); | |
11672 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11673 | p = rs->buf; | |
d5551862 | 11674 | } |
00bf0b85 | 11675 | return 0; |
d5551862 SS |
11676 | } |
11677 | ||
00bf0b85 | 11678 | static int |
181e3713 TT |
11679 | remote_upload_trace_state_variables (struct target_ops *self, |
11680 | struct uploaded_tsv **utsvp) | |
d5551862 | 11681 | { |
00bf0b85 | 11682 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11683 | char *p; |
d5551862 | 11684 | |
00bf0b85 SS |
11685 | /* Ask for a first packet of variable definition. */ |
11686 | putpkt ("qTfV"); | |
d5551862 SS |
11687 | getpkt (&rs->buf, &rs->buf_size, 0); |
11688 | p = rs->buf; | |
00bf0b85 | 11689 | while (*p && *p != 'l') |
d5551862 | 11690 | { |
00bf0b85 SS |
11691 | parse_tsv_definition (p, utsvp); |
11692 | /* Ask for another packet of variable definition. */ | |
11693 | putpkt ("qTsV"); | |
d5551862 SS |
11694 | getpkt (&rs->buf, &rs->buf_size, 0); |
11695 | p = rs->buf; | |
11696 | } | |
00bf0b85 | 11697 | return 0; |
d5551862 SS |
11698 | } |
11699 | ||
c1e36e3e PA |
11700 | /* The "set/show range-stepping" show hook. */ |
11701 | ||
11702 | static void | |
11703 | show_range_stepping (struct ui_file *file, int from_tty, | |
11704 | struct cmd_list_element *c, | |
11705 | const char *value) | |
11706 | { | |
11707 | fprintf_filtered (file, | |
11708 | _("Debugger's willingness to use range stepping " | |
11709 | "is %s.\n"), value); | |
11710 | } | |
11711 | ||
11712 | /* The "set/show range-stepping" set hook. */ | |
11713 | ||
11714 | static void | |
11715 | set_range_stepping (char *ignore_args, int from_tty, | |
11716 | struct cmd_list_element *c) | |
11717 | { | |
5d93a237 TT |
11718 | struct remote_state *rs = get_remote_state (); |
11719 | ||
c1e36e3e PA |
11720 | /* Whene enabling, check whether range stepping is actually |
11721 | supported by the target, and warn if not. */ | |
11722 | if (use_range_stepping) | |
11723 | { | |
5d93a237 | 11724 | if (rs->remote_desc != NULL) |
c1e36e3e | 11725 | { |
4082afcc | 11726 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
11727 | remote_vcont_probe (rs); |
11728 | ||
4082afcc | 11729 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
11730 | && rs->supports_vCont.r) |
11731 | return; | |
11732 | } | |
11733 | ||
11734 | warning (_("Range stepping is not supported by the current target")); | |
11735 | } | |
11736 | } | |
11737 | ||
c906108c | 11738 | void |
fba45db2 | 11739 | _initialize_remote (void) |
c906108c | 11740 | { |
ea9c271d | 11741 | struct remote_state *rs; |
9a7071a8 | 11742 | struct cmd_list_element *cmd; |
6f937416 | 11743 | const char *cmd_name; |
ea9c271d | 11744 | |
0f71a2f6 | 11745 | /* architecture specific data */ |
2bc416ba | 11746 | remote_gdbarch_data_handle = |
23860348 | 11747 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11748 | remote_g_packet_data_handle = |
11749 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11750 | |
ea9c271d DJ |
11751 | /* Initialize the per-target state. At the moment there is only one |
11752 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
11753 | time. */ |
11754 | remote_state = new_remote_state (); | |
ea9c271d | 11755 | |
c906108c SS |
11756 | init_remote_ops (); |
11757 | add_target (&remote_ops); | |
11758 | ||
11759 | init_extended_remote_ops (); | |
11760 | add_target (&extended_remote_ops); | |
cce74817 | 11761 | |
dc8acb97 | 11762 | /* Hook into new objfile notification. */ |
06d3b283 | 11763 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11764 | /* We're no longer interested in notification events of an inferior |
11765 | when it exits. */ | |
11766 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11767 | |
b803fb0f | 11768 | /* Set up signal handlers. */ |
934b9bac | 11769 | async_sigint_remote_token = |
b803fb0f | 11770 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 11771 | async_sigint_remote_twice_token = |
6d549500 | 11772 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11773 | |
c906108c SS |
11774 | #if 0 |
11775 | init_remote_threadtests (); | |
11776 | #endif | |
11777 | ||
722247f1 | 11778 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11779 | /* set/show remote ... */ |
d471ea57 | 11780 | |
1bedd215 | 11781 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11782 | Remote protocol specific variables\n\ |
11783 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11784 | the packets being used"), |
cff3e48b | 11785 | &remote_set_cmdlist, "set remote ", |
23860348 | 11786 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11787 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11788 | Remote protocol specific variables\n\ |
11789 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11790 | the packets being used"), |
cff3e48b | 11791 | &remote_show_cmdlist, "show remote ", |
23860348 | 11792 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11793 | |
1a966eab AC |
11794 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11795 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
11796 | Argument is a single section name (default: all loaded sections).\n\ |
11797 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
11798 | &cmdlist); |
11799 | ||
1a966eab AC |
11800 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11801 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11802 | maintenance packet TEXT\n\ |
11803 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11804 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11805 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11806 | terminating `#' character and checksum."), |
c906108c SS |
11807 | &maintenancelist); |
11808 | ||
7915a72c AC |
11809 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11810 | Set whether to send break if interrupted."), _("\ | |
11811 | Show whether to send break if interrupted."), _("\ | |
11812 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11813 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11814 | &setlist, &showlist); |
9a7071a8 JB |
11815 | cmd_name = "remotebreak"; |
11816 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11817 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11818 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11819 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11820 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11821 | ||
11822 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11823 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11824 | _("\ | |
9a7071a8 JB |
11825 | Set interrupt sequence to remote target."), _("\ |
11826 | Show interrupt sequence to remote target."), _("\ | |
11827 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11828 | NULL, show_interrupt_sequence, | |
11829 | &remote_set_cmdlist, | |
11830 | &remote_show_cmdlist); | |
11831 | ||
11832 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11833 | &interrupt_on_connect, _("\ | |
11834 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11835 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11836 | If set, interrupt sequence is sent to remote target."), | |
11837 | NULL, NULL, | |
11838 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11839 | |
23860348 | 11840 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11841 | |
1a966eab AC |
11842 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11843 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11844 | &setlist); |
1a966eab AC |
11845 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11846 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11847 | &showlist); |
11848 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11849 | set_memory_write_packet_size, _("\ |
11850 | Set the maximum number of bytes per memory-write packet.\n\ | |
11851 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11852 | default packet size. The actual limit is further reduced\n\ | |
11853 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11854 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11855 | &remote_set_cmdlist); |
11856 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11857 | set_memory_read_packet_size, _("\ |
11858 | Set the maximum number of bytes per memory-read packet.\n\ | |
11859 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11860 | default packet size. The actual limit is further reduced\n\ | |
11861 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11862 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11863 | &remote_set_cmdlist); |
11864 | add_cmd ("memory-write-packet-size", no_class, | |
11865 | show_memory_write_packet_size, | |
1a966eab | 11866 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11867 | &remote_show_cmdlist); |
11868 | add_cmd ("memory-read-packet-size", no_class, | |
11869 | show_memory_read_packet_size, | |
1a966eab | 11870 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11871 | &remote_show_cmdlist); |
c906108c | 11872 | |
b3f42336 | 11873 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11874 | &remote_hw_watchpoint_limit, _("\ |
11875 | Set the maximum number of target hardware watchpoints."), _("\ | |
11876 | Show the maximum number of target hardware watchpoints."), _("\ | |
11877 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11878 | NULL, NULL, /* FIXME: i18n: The maximum |
11879 | number of target hardware | |
11880 | watchpoints is %s. */ | |
b3f42336 | 11881 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11882 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11883 | &remote_hw_watchpoint_length_limit, _("\ | |
11884 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11885 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11886 | Specify a negative limit for unlimited."), | |
11887 | NULL, NULL, /* FIXME: i18n: The maximum | |
11888 | length (in bytes) of a target | |
11889 | hardware watchpoint is %s. */ | |
11890 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11891 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11892 | &remote_hw_breakpoint_limit, _("\ |
11893 | Set the maximum number of target hardware breakpoints."), _("\ | |
11894 | Show the maximum number of target hardware breakpoints."), _("\ | |
11895 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11896 | NULL, NULL, /* FIXME: i18n: The maximum |
11897 | number of target hardware | |
11898 | breakpoints is %s. */ | |
b3f42336 | 11899 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11900 | |
1b493192 PA |
11901 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
11902 | &remote_address_size, _("\ | |
4d28ad1e AC |
11903 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
11904 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
11905 | NULL, |
11906 | NULL, /* FIXME: i18n: */ | |
11907 | &setlist, &showlist); | |
c906108c | 11908 | |
ca4f7f8b PA |
11909 | init_all_packet_configs (); |
11910 | ||
444abaca | 11911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11912 | "X", "binary-download", 1); |
0f71a2f6 | 11913 | |
444abaca | 11914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11915 | "vCont", "verbose-resume", 0); |
506fb367 | 11916 | |
89be2091 DJ |
11917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11918 | "QPassSignals", "pass-signals", 0); | |
11919 | ||
9b224c5e PA |
11920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11921 | "QProgramSignals", "program-signals", 0); | |
11922 | ||
444abaca | 11923 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11924 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11925 | |
444abaca | 11926 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11927 | "P", "set-register", 1); |
d471ea57 | 11928 | |
444abaca | 11929 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11930 | "p", "fetch-register", 1); |
b96ec7ac | 11931 | |
444abaca | 11932 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11933 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11934 | |
444abaca | 11935 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11936 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11937 | |
444abaca | 11938 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11939 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11940 | |
444abaca | 11941 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11942 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11943 | |
444abaca | 11944 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11945 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11946 | |
0876f84a DJ |
11947 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11948 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11949 | |
23181151 DJ |
11950 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11951 | "qXfer:features:read", "target-features", 0); | |
11952 | ||
cfa9d6d9 DJ |
11953 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11954 | "qXfer:libraries:read", "library-info", 0); | |
11955 | ||
2268b414 JK |
11956 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11957 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11958 | ||
fd79ecee DJ |
11959 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11960 | "qXfer:memory-map:read", "memory-map", 0); | |
11961 | ||
0e7f50da UW |
11962 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11963 | "qXfer:spu:read", "read-spu-object", 0); | |
11964 | ||
11965 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11966 | "qXfer:spu:write", "write-spu-object", 0); | |
11967 | ||
07e059b5 VP |
11968 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11969 | "qXfer:osdata:read", "osdata", 0); | |
11970 | ||
dc146f7c VP |
11971 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11972 | "qXfer:threads:read", "threads", 0); | |
11973 | ||
4aa995e1 PA |
11974 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11975 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11976 | ||
11977 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11978 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11979 | ||
b3b9301e PA |
11980 | add_packet_config_cmd |
11981 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 11982 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 11983 | |
169081d0 TG |
11984 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11985 | "qXfer:uib:read", "unwind-info-block", 0); | |
11986 | ||
444abaca | 11987 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11988 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11989 | 0); |
11990 | ||
711e434b PM |
11991 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11992 | "qGetTIBAddr", "get-thread-information-block-address", | |
11993 | 0); | |
11994 | ||
40ab02ce MS |
11995 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11996 | "bc", "reverse-continue", 0); | |
11997 | ||
11998 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11999 | "bs", "reverse-step", 0); | |
12000 | ||
be2a5f71 DJ |
12001 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12002 | "qSupported", "supported-packets", 0); | |
12003 | ||
08388c79 DE |
12004 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12005 | "qSearch:memory", "search-memory", 0); | |
12006 | ||
bd3eecc3 PA |
12007 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12008 | "qTStatus", "trace-status", 0); | |
12009 | ||
a6b151f1 DJ |
12010 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12011 | "vFile:open", "hostio-open", 0); | |
12012 | ||
12013 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12014 | "vFile:pread", "hostio-pread", 0); | |
12015 | ||
12016 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12017 | "vFile:pwrite", "hostio-pwrite", 0); | |
12018 | ||
12019 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12020 | "vFile:close", "hostio-close", 0); | |
12021 | ||
12022 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12023 | "vFile:unlink", "hostio-unlink", 0); | |
12024 | ||
b9e7b9c3 UW |
12025 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12026 | "vFile:readlink", "hostio-readlink", 0); | |
12027 | ||
2d717e4f DJ |
12028 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12029 | "vAttach", "attach", 0); | |
12030 | ||
12031 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12032 | "vRun", "run", 0); | |
12033 | ||
a6f3e723 SL |
12034 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12035 | "QStartNoAckMode", "noack", 0); | |
12036 | ||
82f73884 PA |
12037 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12038 | "vKill", "kill", 0); | |
12039 | ||
0b16c5cf PA |
12040 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12041 | "qAttached", "query-attached", 0); | |
12042 | ||
782b2b07 | 12043 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12044 | "ConditionalTracepoints", |
12045 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12046 | |
12047 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12048 | "ConditionalBreakpoints", | |
12049 | "conditional-breakpoints", 0); | |
12050 | ||
d3ce09f5 SS |
12051 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12052 | "BreakpointCommands", | |
12053 | "breakpoint-commands", 0); | |
12054 | ||
7a697b8d SS |
12055 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12056 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12057 | |
409873ef SS |
12058 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12059 | "TracepointSource", "TracepointSource", 0); | |
12060 | ||
d914c394 SS |
12061 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12062 | "QAllow", "allow", 0); | |
12063 | ||
0fb4aa4b PA |
12064 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12065 | "StaticTracepoints", "static-tracepoints", 0); | |
12066 | ||
1e4d1764 YQ |
12067 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12068 | "InstallInTrace", "install-in-trace", 0); | |
12069 | ||
0fb4aa4b PA |
12070 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12071 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12072 | ||
78d85199 YQ |
12073 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12074 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12075 | ||
03583c20 UW |
12076 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12077 | "QDisableRandomization", "disable-randomization", 0); | |
12078 | ||
d1feda86 YQ |
12079 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12080 | "QAgent", "agent", 0); | |
12081 | ||
f6f899bf HAQ |
12082 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12083 | "QTBuffer:size", "trace-buffer-size", 0); | |
12084 | ||
9accd112 MM |
12085 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12086 | "Qbtrace:off", "disable-btrace", 0); | |
12087 | ||
12088 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12089 | "Qbtrace:bts", "enable-btrace", 0); | |
12090 | ||
12091 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12092 | "qXfer:btrace", "read-btrace", 0); | |
12093 | ||
ca4f7f8b PA |
12094 | /* Assert that we've registered commands for all packet configs. */ |
12095 | { | |
12096 | int i; | |
12097 | ||
12098 | for (i = 0; i < PACKET_MAX; i++) | |
12099 | { | |
12100 | /* Ideally all configs would have a command associated. Some | |
12101 | still don't though. */ | |
12102 | int excepted; | |
12103 | ||
12104 | switch (i) | |
12105 | { | |
12106 | case PACKET_QNonStop: | |
12107 | case PACKET_multiprocess_feature: | |
12108 | case PACKET_EnableDisableTracepoints_feature: | |
12109 | case PACKET_tracenz_feature: | |
12110 | case PACKET_DisconnectedTracing_feature: | |
12111 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
12112 | case PACKET_qCRC: |
12113 | /* Additions to this list need to be well justified: | |
12114 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
12115 | excepted = 1; |
12116 | break; | |
12117 | default: | |
12118 | excepted = 0; | |
12119 | break; | |
12120 | } | |
12121 | ||
12122 | /* This catches both forgetting to add a config command, and | |
12123 | forgetting to remove a packet from the exception list. */ | |
12124 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
12125 | } | |
12126 | } | |
12127 | ||
37a105a1 DJ |
12128 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12129 | Z sub-packet has its own set and show commands, but users may | |
12130 | have sets to this variable in their .gdbinit files (or in their | |
12131 | documentation). */ | |
e9e68a56 | 12132 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12133 | &remote_Z_packet_detect, _("\ |
12134 | Set use of remote protocol `Z' packets"), _("\ | |
12135 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12136 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12137 | packets."), |
e9e68a56 | 12138 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12139 | show_remote_protocol_Z_packet_cmd, |
12140 | /* FIXME: i18n: Use of remote protocol | |
12141 | `Z' packets is %s. */ | |
e9e68a56 | 12142 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12143 | |
a6b151f1 DJ |
12144 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12145 | Manipulate files on the remote system\n\ | |
12146 | Transfer files to and from the remote target system."), | |
12147 | &remote_cmdlist, "remote ", | |
12148 | 0 /* allow-unknown */, &cmdlist); | |
12149 | ||
12150 | add_cmd ("put", class_files, remote_put_command, | |
12151 | _("Copy a local file to the remote system."), | |
12152 | &remote_cmdlist); | |
12153 | ||
12154 | add_cmd ("get", class_files, remote_get_command, | |
12155 | _("Copy a remote file to the local system."), | |
12156 | &remote_cmdlist); | |
12157 | ||
12158 | add_cmd ("delete", class_files, remote_delete_command, | |
12159 | _("Delete a remote file."), | |
12160 | &remote_cmdlist); | |
12161 | ||
2d717e4f DJ |
12162 | remote_exec_file = xstrdup (""); |
12163 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12164 | &remote_exec_file, _("\ | |
12165 | Set the remote pathname for \"run\""), _("\ | |
12166 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12167 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12168 | ||
c1e36e3e PA |
12169 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12170 | &use_range_stepping, _("\ | |
12171 | Enable or disable range stepping."), _("\ | |
12172 | Show whether target-assisted range stepping is enabled."), _("\ | |
12173 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12174 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12175 | of issuing multiple single-steps. This speeds up source level\n\ | |
12176 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12177 | stepping is supported by the target. The default is on."), | |
12178 | set_range_stepping, | |
12179 | show_range_stepping, | |
12180 | &setlist, | |
12181 | &showlist); | |
12182 | ||
449092f6 CV |
12183 | /* Eventually initialize fileio. See fileio.c */ |
12184 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 12185 | |
ba348170 | 12186 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 12187 | special ptids with it set to != 0. */ |
ba348170 PA |
12188 | magic_null_ptid = ptid_build (42000, -1, 1); |
12189 | not_sent_ptid = ptid_build (42000, -2, 1); | |
12190 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
12191 | |
12192 | target_buf_size = 2048; | |
12193 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12194 | } |
10760264 | 12195 |