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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1988-2014 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
0e9f083f | 23 | #include <string.h> |
c906108c SS |
24 | #include <ctype.h> |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
722247f1 | 37 | #include "remote-notif.h" |
4e052eda | 38 | #include "regcache.h" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
6867ae3e | 41 | #include "observer.h" |
a77053c2 | 42 | #include "solib.h" |
37a105a1 DJ |
43 | #include "cli/cli-decode.h" |
44 | #include "cli/cli-setshow.h" | |
424163ea | 45 | #include "target-descriptions.h" |
a4453b7e | 46 | #include "gdb_bfd.h" |
614c279d | 47 | #include "filestuff.h" |
c906108c | 48 | |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
53ce3c39 | 62 | #include <sys/stat.h> |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
d1feda86 | 70 | #include "agent.h" |
9accd112 | 71 | #include "btrace.h" |
35b1e5cc | 72 | |
0df8b418 | 73 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
74 | static char *target_buf; |
75 | static long target_buf_size; | |
35b1e5cc | 76 | |
6765f3e5 DJ |
77 | /* The size to align memory write packets, when practical. The protocol |
78 | does not guarantee any alignment, and gdb will generate short | |
79 | writes and unaligned writes, but even as a best-effort attempt this | |
80 | can improve bulk transfers. For instance, if a write is misaligned | |
81 | relative to the target's data bus, the stub may need to make an extra | |
82 | round trip fetching data from the target. This doesn't make a | |
83 | huge difference, but it's easy to do, so we try to be helpful. | |
84 | ||
85 | The alignment chosen is arbitrary; usually data bus width is | |
86 | important here, not the possibly larger cache line size. */ | |
87 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
88 | ||
23860348 | 89 | /* Prototypes for local functions. */ |
934b9bac | 90 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 91 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 92 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 93 | int forever, int *is_notif); |
6426a772 | 94 | |
934b9bac JK |
95 | static void async_handle_remote_sigint (int); |
96 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 97 | |
a14ed312 | 98 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 99 | |
316f2060 | 100 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_open (char *name, int from_tty); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 105 | |
75c99385 | 106 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 107 | |
460014f5 | 108 | static void remote_close (void); |
c906108c | 109 | |
136d6dae | 110 | static void remote_mourn (struct target_ops *ops); |
c906108c | 111 | |
a14ed312 | 112 | static void extended_remote_restart (void); |
c906108c | 113 | |
136d6dae | 114 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 115 | |
a14ed312 | 116 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 117 | |
6d820c5c | 118 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 119 | |
a14ed312 | 120 | static int readchar (int timeout); |
c906108c | 121 | |
c33e31fd PA |
122 | static void remote_serial_write (const char *str, int len); |
123 | ||
7d85a9c0 | 124 | static void remote_kill (struct target_ops *ops); |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
75c99385 PA |
128 | static int remote_can_async_p (void); |
129 | ||
130 | static int remote_is_async_p (void); | |
131 | ||
132 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
133 | void *context), void *context); | |
134 | ||
934b9bac | 135 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 136 | |
a14ed312 | 137 | static void interrupt_query (void); |
c906108c | 138 | |
79d7f229 PA |
139 | static void set_general_thread (struct ptid ptid); |
140 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 141 | |
a14ed312 | 142 | static void get_offsets (void); |
c906108c | 143 | |
6d820c5c DJ |
144 | static void skip_frame (void); |
145 | ||
146 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 147 | |
a14ed312 | 148 | static int hexnumlen (ULONGEST num); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_ops (void); |
c906108c | 151 | |
a14ed312 | 152 | static void init_extended_remote_ops (void); |
c906108c | 153 | |
94cc34af | 154 | static void remote_stop (ptid_t); |
c906108c | 155 | |
a14ed312 | 156 | static int ishex (int ch, int *val); |
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 | |
30559e10 | 178 | static int fromhex (int a); |
c906108c | 179 | |
a14ed312 | 180 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 181 | |
a14ed312 | 182 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 183 | |
5a2468f5 | 184 | struct packet_config; |
5a2468f5 | 185 | |
a14ed312 | 186 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 187 | |
d471ea57 | 188 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 189 | |
bb572ddd DJ |
190 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
191 | struct cmd_list_element *c); | |
192 | ||
193 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
194 | int from_tty, | |
195 | struct cmd_list_element *c, | |
196 | const char *value); | |
197 | ||
82f73884 PA |
198 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
199 | static ptid_t read_ptid (char *buf, char **obuf); | |
200 | ||
d914c394 SS |
201 | static void remote_set_permissions (void); |
202 | ||
d5551862 | 203 | struct remote_state; |
00bf0b85 | 204 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 205 | |
00bf0b85 SS |
206 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
207 | ||
208 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
209 | ||
c8d104ad PA |
210 | static void remote_query_supported (void); |
211 | ||
36d25514 | 212 | static void remote_check_symbols (void); |
c8d104ad | 213 | |
a14ed312 | 214 | void _initialize_remote (void); |
c906108c | 215 | |
74531fed | 216 | struct stop_reply; |
74531fed | 217 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 218 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 219 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 220 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
221 | static int peek_stop_reply (ptid_t ptid); |
222 | ||
223 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 224 | |
d3fd5342 PA |
225 | static void remote_terminal_ours (void); |
226 | ||
d962ef82 DJ |
227 | static int remote_read_description_p (struct target_ops *target); |
228 | ||
176a6961 | 229 | static void remote_console_output (char *msg); |
dde08ee1 | 230 | |
b775012e LM |
231 | static int remote_supports_cond_breakpoints (void); |
232 | ||
d3ce09f5 SS |
233 | static int remote_can_run_breakpoint_commands (void); |
234 | ||
a6b151f1 DJ |
235 | /* For "remote". */ |
236 | ||
237 | static struct cmd_list_element *remote_cmdlist; | |
238 | ||
bb572ddd DJ |
239 | /* For "set remote" and "show remote". */ |
240 | ||
241 | static struct cmd_list_element *remote_set_cmdlist; | |
242 | static struct cmd_list_element *remote_show_cmdlist; | |
243 | ||
d458bd84 PA |
244 | /* Stub vCont actions support. |
245 | ||
246 | Each field is a boolean flag indicating whether the stub reports | |
247 | support for the corresponding action. */ | |
248 | ||
249 | struct vCont_action_support | |
250 | { | |
251 | /* vCont;t */ | |
252 | int t; | |
c1e36e3e PA |
253 | |
254 | /* vCont;r */ | |
255 | int r; | |
d458bd84 PA |
256 | }; |
257 | ||
c1e36e3e PA |
258 | /* Controls whether GDB is willing to use range stepping. */ |
259 | ||
260 | static int use_range_stepping = 1; | |
261 | ||
0d031856 TT |
262 | #define OPAQUETHREADBYTES 8 |
263 | ||
264 | /* a 64 bit opaque identifier */ | |
265 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
266 | ||
267 | /* About this many threadisds fit in a packet. */ | |
268 | ||
269 | #define MAXTHREADLISTRESULTS 32 | |
270 | ||
ea9c271d DJ |
271 | /* Description of the remote protocol state for the currently |
272 | connected target. This is per-target state, and independent of the | |
273 | selected architecture. */ | |
274 | ||
275 | struct remote_state | |
276 | { | |
277 | /* A buffer to use for incoming packets, and its current size. The | |
278 | buffer is grown dynamically for larger incoming packets. | |
279 | Outgoing packets may also be constructed in this buffer. | |
280 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
281 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
282 | packets. */ | |
283 | char *buf; | |
284 | long buf_size; | |
be2a5f71 | 285 | |
1e51243a PA |
286 | /* True if we're going through initial connection setup (finding out |
287 | about the remote side's threads, relocating symbols, etc.). */ | |
288 | int starting_up; | |
289 | ||
be2a5f71 DJ |
290 | /* If we negotiated packet size explicitly (and thus can bypass |
291 | heuristics for the largest packet size that will not overflow | |
292 | a buffer in the stub), this will be set to that packet size. | |
293 | Otherwise zero, meaning to use the guessed size. */ | |
294 | long explicit_packet_size; | |
2d717e4f DJ |
295 | |
296 | /* remote_wait is normally called when the target is running and | |
297 | waits for a stop reply packet. But sometimes we need to call it | |
298 | when the target is already stopped. We can send a "?" packet | |
299 | and have remote_wait read the response. Or, if we already have | |
300 | the response, we can stash it in BUF and tell remote_wait to | |
301 | skip calling getpkt. This flag is set when BUF contains a | |
302 | stop reply packet and the target is not waiting. */ | |
303 | int cached_wait_status; | |
a6f3e723 SL |
304 | |
305 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
306 | expect acks from each other. The connection is assumed to be | |
307 | reliable. */ | |
308 | int noack_mode; | |
82f73884 PA |
309 | |
310 | /* True if we're connected in extended remote mode. */ | |
311 | int extended; | |
312 | ||
313 | /* True if the stub reported support for multi-process | |
314 | extensions. */ | |
315 | int multi_process_aware; | |
e24a49d8 PA |
316 | |
317 | /* True if we resumed the target and we're waiting for the target to | |
318 | stop. In the mean time, we can't start another command/query. | |
319 | The remote server wouldn't be ready to process it, so we'd | |
320 | timeout waiting for a reply that would never come and eventually | |
321 | we'd close the connection. This can happen in asynchronous mode | |
322 | because we allow GDB commands while the target is running. */ | |
323 | int waiting_for_stop_reply; | |
74531fed PA |
324 | |
325 | /* True if the stub reports support for non-stop mode. */ | |
326 | int non_stop_aware; | |
327 | ||
d458bd84 PA |
328 | /* The status of the stub support for the various vCont actions. */ |
329 | struct vCont_action_support supports_vCont; | |
782b2b07 SS |
330 | |
331 | /* True if the stub reports support for conditional tracepoints. */ | |
332 | int cond_tracepoints; | |
3a29589a | 333 | |
3788aec7 LM |
334 | /* True if the stub reports support for target-side breakpoint |
335 | conditions. */ | |
336 | int cond_breakpoints; | |
337 | ||
d3ce09f5 SS |
338 | /* True if the stub reports support for target-side breakpoint |
339 | commands. */ | |
340 | int breakpoint_commands; | |
341 | ||
7a697b8d SS |
342 | /* True if the stub reports support for fast tracepoints. */ |
343 | int fast_tracepoints; | |
344 | ||
0fb4aa4b PA |
345 | /* True if the stub reports support for static tracepoints. */ |
346 | int static_tracepoints; | |
347 | ||
1e4d1764 YQ |
348 | /* True if the stub reports support for installing tracepoint while |
349 | tracing. */ | |
350 | int install_in_trace; | |
351 | ||
d5551862 SS |
352 | /* True if the stub can continue running a trace while GDB is |
353 | disconnected. */ | |
354 | int disconnected_tracing; | |
355 | ||
d248b706 KY |
356 | /* True if the stub reports support for enabling and disabling |
357 | tracepoints while a trace experiment is running. */ | |
358 | int enable_disable_tracepoints; | |
359 | ||
3065dfb6 SS |
360 | /* True if the stub can collect strings using tracenz bytecode. */ |
361 | int string_tracing; | |
362 | ||
ced63ec0 GB |
363 | /* True if the stub supports qXfer:libraries-svr4:read with a |
364 | non-empty annex. */ | |
365 | int augmented_libraries_svr4_read; | |
366 | ||
3a29589a DJ |
367 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
368 | responded to that. */ | |
369 | int ctrlc_pending_p; | |
5d93a237 TT |
370 | |
371 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
372 | remote_open knows that we don't have a file open when the program | |
373 | starts. */ | |
374 | struct serial *remote_desc; | |
47f8a51d TT |
375 | |
376 | /* These are the threads which we last sent to the remote system. The | |
377 | TID member will be -1 for all or -2 for not sent yet. */ | |
378 | ptid_t general_thread; | |
379 | ptid_t continue_thread; | |
262e1174 TT |
380 | |
381 | /* This is the traceframe which we last selected on the remote system. | |
382 | It will be -1 if no traceframe is selected. */ | |
383 | int remote_traceframe_number; | |
747dc59d TT |
384 | |
385 | char *last_pass_packet; | |
5e4a05c4 TT |
386 | |
387 | /* The last QProgramSignals packet sent to the target. We bypass | |
388 | sending a new program signals list down to the target if the new | |
389 | packet is exactly the same as the last we sent. IOW, we only let | |
390 | the target know about program signals list changes. */ | |
391 | char *last_program_signals_packet; | |
b73be471 TT |
392 | |
393 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
394 | |
395 | int last_sent_step; | |
8e88304f TT |
396 | |
397 | char *finished_object; | |
398 | char *finished_annex; | |
399 | ULONGEST finished_offset; | |
b80fafe3 TT |
400 | |
401 | /* Should we try the 'ThreadInfo' query packet? | |
402 | ||
403 | This variable (NOT available to the user: auto-detect only!) | |
404 | determines whether GDB will use the new, simpler "ThreadInfo" | |
405 | query or the older, more complex syntax for thread queries. | |
406 | This is an auto-detect variable (set to true at each connect, | |
407 | and set to false when the target fails to recognize it). */ | |
408 | int use_threadinfo_query; | |
409 | int use_threadextra_query; | |
88b496c3 TT |
410 | |
411 | void (*async_client_callback) (enum inferior_event_type event_type, | |
412 | void *context); | |
413 | void *async_client_context; | |
ee154bee TT |
414 | |
415 | /* This is set to the data address of the access causing the target | |
416 | to stop for a watchpoint. */ | |
417 | CORE_ADDR remote_watch_data_address; | |
418 | ||
419 | /* This is non-zero if target stopped for a watchpoint. */ | |
420 | int remote_stopped_by_watchpoint_p; | |
0d031856 TT |
421 | |
422 | threadref echo_nextthread; | |
423 | threadref nextthread; | |
424 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
425 | |
426 | /* The state of remote notification. */ | |
427 | struct remote_notif_state *notif_state; | |
ea9c271d DJ |
428 | }; |
429 | ||
dc146f7c VP |
430 | /* Private data that we'll store in (struct thread_info)->private. */ |
431 | struct private_thread_info | |
432 | { | |
433 | char *extra; | |
434 | int core; | |
435 | }; | |
436 | ||
437 | static void | |
438 | free_private_thread_info (struct private_thread_info *info) | |
439 | { | |
440 | xfree (info->extra); | |
441 | xfree (info); | |
442 | } | |
443 | ||
82f73884 PA |
444 | /* Returns true if the multi-process extensions are in effect. */ |
445 | static int | |
446 | remote_multi_process_p (struct remote_state *rs) | |
447 | { | |
901f9912 | 448 | return rs->multi_process_aware; |
82f73884 PA |
449 | } |
450 | ||
ea9c271d DJ |
451 | /* This data could be associated with a target, but we do not always |
452 | have access to the current target when we need it, so for now it is | |
453 | static. This will be fine for as long as only one target is in use | |
454 | at a time. */ | |
cf792862 | 455 | static struct remote_state *remote_state; |
ea9c271d DJ |
456 | |
457 | static struct remote_state * | |
0b83947e | 458 | get_remote_state_raw (void) |
ea9c271d | 459 | { |
cf792862 TT |
460 | return remote_state; |
461 | } | |
462 | ||
463 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
464 | return it. */ | |
465 | ||
466 | static struct remote_state * | |
467 | new_remote_state (void) | |
468 | { | |
469 | struct remote_state *result = XCNEW (struct remote_state); | |
470 | ||
471 | /* The default buffer size is unimportant; it will be expanded | |
472 | whenever a larger buffer is needed. */ | |
473 | result->buf_size = 400; | |
474 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 475 | result->remote_traceframe_number = -1; |
b73be471 | 476 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
477 | |
478 | return result; | |
ea9c271d DJ |
479 | } |
480 | ||
481 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 482 | |
ad10f812 AC |
483 | struct packet_reg |
484 | { | |
485 | long offset; /* Offset into G packet. */ | |
486 | long regnum; /* GDB's internal register number. */ | |
487 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 488 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 489 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 490 | at present. */ |
f5656ead | 491 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 492 | at present. */ |
ad10f812 AC |
493 | }; |
494 | ||
ea9c271d | 495 | struct remote_arch_state |
d01949b6 | 496 | { |
ad10f812 AC |
497 | /* Description of the remote protocol registers. */ |
498 | long sizeof_g_packet; | |
b323314b AC |
499 | |
500 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 501 | (making an array gdbarch_num_regs in size). */ |
b323314b | 502 | struct packet_reg *regs; |
ad10f812 | 503 | |
d01949b6 AC |
504 | /* This is the size (in chars) of the first response to the ``g'' |
505 | packet. It is used as a heuristic when determining the maximum | |
506 | size of memory-read and memory-write packets. A target will | |
507 | typically only reserve a buffer large enough to hold the ``g'' | |
508 | packet. The size does not include packet overhead (headers and | |
23860348 | 509 | trailers). */ |
d01949b6 AC |
510 | long actual_register_packet_size; |
511 | ||
512 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 513 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
514 | long remote_packet_size; |
515 | }; | |
516 | ||
35b1e5cc SS |
517 | /* Utility: generate error from an incoming stub packet. */ |
518 | static void | |
519 | trace_error (char *buf) | |
520 | { | |
521 | if (*buf++ != 'E') | |
522 | return; /* not an error msg */ | |
523 | switch (*buf) | |
524 | { | |
525 | case '1': /* malformed packet error */ | |
526 | if (*++buf == '0') /* general case: */ | |
527 | error (_("remote.c: error in outgoing packet.")); | |
528 | else | |
529 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
530 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
531 | default: |
532 | error (_("Target returns error code '%s'."), buf); | |
533 | } | |
534 | } | |
535 | ||
536 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
537 | static char * | |
538 | remote_get_noisy_reply (char **buf_p, | |
539 | long *sizeof_buf) | |
540 | { | |
541 | do /* Loop on reply from remote stub. */ | |
542 | { | |
543 | char *buf; | |
a744cf53 | 544 | |
0df8b418 | 545 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
546 | getpkt (buf_p, sizeof_buf, 0); |
547 | buf = *buf_p; | |
ad91cd99 | 548 | if (buf[0] == 'E') |
35b1e5cc | 549 | trace_error (buf); |
dde08ee1 PA |
550 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
551 | { | |
552 | ULONGEST ul; | |
553 | CORE_ADDR from, to, org_to; | |
554 | char *p, *pp; | |
555 | int adjusted_size = 0; | |
556 | volatile struct gdb_exception ex; | |
557 | ||
558 | p = buf + strlen ("qRelocInsn:"); | |
559 | pp = unpack_varlen_hex (p, &ul); | |
560 | if (*pp != ';') | |
cb91c06a | 561 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
562 | from = ul; |
563 | ||
564 | p = pp + 1; | |
a9cbf802 | 565 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
566 | to = ul; |
567 | ||
568 | org_to = to; | |
569 | ||
570 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
571 | { | |
f5656ead | 572 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
573 | } |
574 | if (ex.reason >= 0) | |
575 | { | |
576 | adjusted_size = to - org_to; | |
577 | ||
bba74b36 | 578 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
579 | putpkt (buf); |
580 | } | |
581 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
582 | { | |
583 | /* Propagate memory errors silently back to the target. | |
584 | The stub may have limited the range of addresses we | |
585 | can write to, for example. */ | |
586 | putpkt ("E01"); | |
587 | } | |
588 | else | |
589 | { | |
590 | /* Something unexpectedly bad happened. Be verbose so | |
591 | we can tell what, and propagate the error back to the | |
592 | stub, so it doesn't get stuck waiting for a | |
593 | response. */ | |
594 | exception_fprintf (gdb_stderr, ex, | |
595 | _("warning: relocating instruction: ")); | |
596 | putpkt ("E01"); | |
597 | } | |
598 | } | |
ad91cd99 | 599 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
600 | remote_console_output (buf + 1); /* 'O' message from stub */ |
601 | else | |
0df8b418 | 602 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
603 | } |
604 | while (1); | |
605 | } | |
3c3bea1c | 606 | |
d01949b6 AC |
607 | /* Handle for retreving the remote protocol data from gdbarch. */ |
608 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
609 | ||
ea9c271d DJ |
610 | static struct remote_arch_state * |
611 | get_remote_arch_state (void) | |
d01949b6 | 612 | { |
f5656ead | 613 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
614 | } |
615 | ||
0b83947e DJ |
616 | /* Fetch the global remote target state. */ |
617 | ||
618 | static struct remote_state * | |
619 | get_remote_state (void) | |
620 | { | |
621 | /* Make sure that the remote architecture state has been | |
622 | initialized, because doing so might reallocate rs->buf. Any | |
623 | function which calls getpkt also needs to be mindful of changes | |
624 | to rs->buf, but this call limits the number of places which run | |
625 | into trouble. */ | |
626 | get_remote_arch_state (); | |
627 | ||
628 | return get_remote_state_raw (); | |
629 | } | |
630 | ||
74ca34ce DJ |
631 | static int |
632 | compare_pnums (const void *lhs_, const void *rhs_) | |
633 | { | |
634 | const struct packet_reg * const *lhs = lhs_; | |
635 | const struct packet_reg * const *rhs = rhs_; | |
636 | ||
637 | if ((*lhs)->pnum < (*rhs)->pnum) | |
638 | return -1; | |
639 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
640 | return 0; | |
641 | else | |
642 | return 1; | |
643 | } | |
644 | ||
c21236dc PA |
645 | static int |
646 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 647 | { |
74ca34ce | 648 | int regnum, num_remote_regs, offset; |
74ca34ce | 649 | struct packet_reg **remote_regs; |
ea9c271d | 650 | |
4a22f64d | 651 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 652 | { |
c21236dc | 653 | struct packet_reg *r = ®s[regnum]; |
baef701f | 654 | |
4a22f64d | 655 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
656 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
657 | r->pnum = -1; | |
658 | else | |
659 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
660 | ||
b323314b | 661 | r->regnum = regnum; |
74ca34ce DJ |
662 | } |
663 | ||
664 | /* Define the g/G packet format as the contents of each register | |
665 | with a remote protocol number, in order of ascending protocol | |
666 | number. */ | |
667 | ||
4a22f64d | 668 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 669 | * sizeof (struct packet_reg *)); |
f57d151a | 670 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 671 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 672 | regnum++) |
c21236dc PA |
673 | if (regs[regnum].pnum != -1) |
674 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 675 | |
74ca34ce DJ |
676 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
677 | compare_pnums); | |
678 | ||
679 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
680 | { | |
681 | remote_regs[regnum]->in_g_packet = 1; | |
682 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 683 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
684 | } |
685 | ||
c21236dc PA |
686 | return offset; |
687 | } | |
688 | ||
689 | /* Given the architecture described by GDBARCH, return the remote | |
690 | protocol register's number and the register's offset in the g/G | |
691 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
692 | If the target does not have a mapping for REGNUM, return false, | |
693 | otherwise, return true. */ | |
694 | ||
695 | int | |
696 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
697 | int *pnum, int *poffset) | |
698 | { | |
699 | int sizeof_g_packet; | |
700 | struct packet_reg *regs; | |
701 | struct cleanup *old_chain; | |
702 | ||
703 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
704 | ||
705 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
706 | old_chain = make_cleanup (xfree, regs); | |
707 | ||
708 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
709 | ||
710 | *pnum = regs[regnum].pnum; | |
711 | *poffset = regs[regnum].offset; | |
712 | ||
713 | do_cleanups (old_chain); | |
714 | ||
715 | return *pnum != -1; | |
716 | } | |
717 | ||
718 | static void * | |
719 | init_remote_state (struct gdbarch *gdbarch) | |
720 | { | |
721 | struct remote_state *rs = get_remote_state_raw (); | |
722 | struct remote_arch_state *rsa; | |
723 | ||
724 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
725 | ||
726 | /* Use the architecture to build a regnum<->pnum table, which will be | |
727 | 1:1 unless a feature set specifies otherwise. */ | |
728 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
729 | gdbarch_num_regs (gdbarch), | |
730 | struct packet_reg); | |
731 | ||
74ca34ce DJ |
732 | /* Record the maximum possible size of the g packet - it may turn out |
733 | to be smaller. */ | |
c21236dc | 734 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 735 | |
0df8b418 | 736 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
737 | remote stubs have a hardwired buffer size of 400 bytes |
738 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
739 | as the maximum packet-size to ensure that the packet and an extra | |
740 | NUL character can always fit in the buffer. This stops GDB | |
741 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
742 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
743 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 744 | |
ea9c271d DJ |
745 | /* This one is filled in when a ``g'' packet is received. */ |
746 | rsa->actual_register_packet_size = 0; | |
747 | ||
748 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
749 | default, adjust the size accordingly. Remember that each byte is |
750 | encoded as two characters. 32 is the overhead for the packet | |
751 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 752 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 753 | little. */ |
ea9c271d DJ |
754 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
755 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 756 | |
ea9c271d DJ |
757 | /* Make sure that the packet buffer is plenty big enough for |
758 | this architecture. */ | |
759 | if (rs->buf_size < rsa->remote_packet_size) | |
760 | { | |
761 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 762 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 763 | } |
6d820c5c | 764 | |
ea9c271d DJ |
765 | return rsa; |
766 | } | |
767 | ||
768 | /* Return the current allowed size of a remote packet. This is | |
769 | inferred from the current architecture, and should be used to | |
770 | limit the length of outgoing packets. */ | |
771 | static long | |
772 | get_remote_packet_size (void) | |
773 | { | |
be2a5f71 | 774 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
775 | struct remote_arch_state *rsa = get_remote_arch_state (); |
776 | ||
be2a5f71 DJ |
777 | if (rs->explicit_packet_size) |
778 | return rs->explicit_packet_size; | |
779 | ||
ea9c271d | 780 | return rsa->remote_packet_size; |
d01949b6 AC |
781 | } |
782 | ||
ad10f812 | 783 | static struct packet_reg * |
ea9c271d | 784 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 785 | { |
f5656ead | 786 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
787 | return NULL; |
788 | else | |
ad10f812 | 789 | { |
ea9c271d | 790 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 791 | |
b323314b AC |
792 | gdb_assert (r->regnum == regnum); |
793 | return r; | |
ad10f812 | 794 | } |
ad10f812 AC |
795 | } |
796 | ||
797 | static struct packet_reg * | |
ea9c271d | 798 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 799 | { |
b323314b | 800 | int i; |
a744cf53 | 801 | |
f5656ead | 802 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 803 | { |
ea9c271d | 804 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 805 | |
b323314b AC |
806 | if (r->pnum == pnum) |
807 | return r; | |
ad10f812 AC |
808 | } |
809 | return NULL; | |
d01949b6 AC |
810 | } |
811 | ||
c906108c SS |
812 | static struct target_ops remote_ops; |
813 | ||
814 | static struct target_ops extended_remote_ops; | |
815 | ||
6426a772 JM |
816 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
817 | ``forever'' still use the normal timeout mechanism. This is | |
818 | currently used by the ASYNC code to guarentee that target reads | |
819 | during the initial connect always time-out. Once getpkt has been | |
820 | modified to return a timeout indication and, in turn | |
821 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 822 | this can go away. */ |
6426a772 JM |
823 | static int wait_forever_enabled_p = 1; |
824 | ||
9a7071a8 JB |
825 | /* Allow the user to specify what sequence to send to the remote |
826 | when he requests a program interruption: Although ^C is usually | |
827 | what remote systems expect (this is the default, here), it is | |
828 | sometimes preferable to send a break. On other systems such | |
829 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
830 | is required in order to interrupt the execution. */ | |
831 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
832 | const char interrupt_sequence_break[] = "BREAK"; | |
833 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 834 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
835 | { |
836 | interrupt_sequence_control_c, | |
837 | interrupt_sequence_break, | |
838 | interrupt_sequence_break_g, | |
839 | NULL | |
840 | }; | |
841 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
842 | ||
843 | static void | |
844 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
845 | struct cmd_list_element *c, | |
846 | const char *value) | |
847 | { | |
848 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
849 | fprintf_filtered (file, | |
850 | _("Send the ASCII ETX character (Ctrl-c) " | |
851 | "to the remote target to interrupt the " | |
852 | "execution of the program.\n")); | |
853 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
854 | fprintf_filtered (file, | |
855 | _("send a break signal to the remote target " | |
856 | "to interrupt the execution of the program.\n")); | |
857 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
858 | fprintf_filtered (file, | |
859 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
860 | "the remote target to interrupt the execution " | |
861 | "of Linux kernel.\n")); | |
862 | else | |
863 | internal_error (__FILE__, __LINE__, | |
864 | _("Invalid value for interrupt_sequence_mode: %s."), | |
865 | interrupt_sequence_mode); | |
866 | } | |
6426a772 | 867 | |
9a7071a8 JB |
868 | /* This boolean variable specifies whether interrupt_sequence is sent |
869 | to the remote target when gdb connects to it. | |
870 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
871 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
872 | static int interrupt_on_connect = 0; | |
c906108c | 873 | |
9a7071a8 JB |
874 | /* This variable is used to implement the "set/show remotebreak" commands. |
875 | Since these commands are now deprecated in favor of "set/show remote | |
876 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
877 | static int remote_break; |
878 | ||
9a7071a8 JB |
879 | static void |
880 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
881 | { | |
882 | if (remote_break) | |
883 | interrupt_sequence_mode = interrupt_sequence_break; | |
884 | else | |
885 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
886 | } | |
887 | ||
888 | static void | |
889 | show_remotebreak (struct ui_file *file, int from_tty, | |
890 | struct cmd_list_element *c, | |
891 | const char *value) | |
892 | { | |
893 | } | |
894 | ||
c906108c SS |
895 | /* This variable sets the number of bits in an address that are to be |
896 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 897 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
898 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
899 | initial implementation of remote.c restricted the address sent in | |
900 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
901 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
902 | address was never sent. Since fixing this bug may cause a break in | |
903 | some remote targets this variable is principly provided to | |
23860348 | 904 | facilitate backward compatibility. */ |
c906108c | 905 | |
883b9c6c | 906 | static unsigned int remote_address_size; |
c906108c | 907 | |
75c99385 PA |
908 | /* Temporary to track who currently owns the terminal. See |
909 | remote_terminal_* for more details. */ | |
6426a772 JM |
910 | |
911 | static int remote_async_terminal_ours_p; | |
912 | ||
2d717e4f DJ |
913 | /* The executable file to use for "run" on the remote side. */ |
914 | ||
915 | static char *remote_exec_file = ""; | |
916 | ||
11cf8741 | 917 | \f |
11cf8741 | 918 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
919 | memory read/write packet. MIN (rsa->remote_packet_size, |
920 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 921 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
922 | (speed up transfers). The variables ``preferred_*'' (the user |
923 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 924 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
925 | |
926 | struct memory_packet_config | |
927 | { | |
928 | char *name; | |
929 | long size; | |
930 | int fixed_p; | |
931 | }; | |
932 | ||
933 | /* Compute the current size of a read/write packet. Since this makes | |
934 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
935 | ||
936 | static long | |
937 | get_memory_packet_size (struct memory_packet_config *config) | |
938 | { | |
d01949b6 | 939 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
940 | struct remote_arch_state *rsa = get_remote_arch_state (); |
941 | ||
11cf8741 JM |
942 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
943 | law?) that some hosts don't cope very well with large alloca() | |
944 | calls. Eventually the alloca() code will be replaced by calls to | |
945 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 946 | be lifted or removed. */ |
11cf8741 JM |
947 | #ifndef MAX_REMOTE_PACKET_SIZE |
948 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
949 | #endif | |
3de11b2e | 950 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 951 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 952 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
953 | #endif |
954 | long what_they_get; | |
955 | if (config->fixed_p) | |
956 | { | |
957 | if (config->size <= 0) | |
958 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
959 | else | |
960 | what_they_get = config->size; | |
961 | } | |
962 | else | |
963 | { | |
ea9c271d | 964 | what_they_get = get_remote_packet_size (); |
23860348 | 965 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
966 | if (config->size > 0 |
967 | && what_they_get > config->size) | |
968 | what_they_get = config->size; | |
be2a5f71 DJ |
969 | |
970 | /* Limit it to the size of the targets ``g'' response unless we have | |
971 | permission from the stub to use a larger packet size. */ | |
972 | if (rs->explicit_packet_size == 0 | |
973 | && rsa->actual_register_packet_size > 0 | |
974 | && what_they_get > rsa->actual_register_packet_size) | |
975 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
976 | } |
977 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
978 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
979 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
980 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
981 | |
982 | /* Make sure there is room in the global buffer for this packet | |
983 | (including its trailing NUL byte). */ | |
984 | if (rs->buf_size < what_they_get + 1) | |
985 | { | |
986 | rs->buf_size = 2 * what_they_get; | |
987 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
988 | } | |
989 | ||
11cf8741 JM |
990 | return what_they_get; |
991 | } | |
992 | ||
0df8b418 | 993 | /* Update the size of a read/write packet. If they user wants |
23860348 | 994 | something really big then do a sanity check. */ |
11cf8741 JM |
995 | |
996 | static void | |
997 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
998 | { | |
999 | int fixed_p = config->fixed_p; | |
1000 | long size = config->size; | |
a744cf53 | 1001 | |
11cf8741 | 1002 | if (args == NULL) |
8a3fe4f8 | 1003 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1004 | else if (strcmp (args, "hard") == 0 |
1005 | || strcmp (args, "fixed") == 0) | |
1006 | fixed_p = 1; | |
1007 | else if (strcmp (args, "soft") == 0 | |
1008 | || strcmp (args, "limit") == 0) | |
1009 | fixed_p = 0; | |
1010 | else | |
1011 | { | |
1012 | char *end; | |
a744cf53 | 1013 | |
11cf8741 JM |
1014 | size = strtoul (args, &end, 0); |
1015 | if (args == end) | |
8a3fe4f8 | 1016 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
1017 | #if 0 |
1018 | /* Instead of explicitly capping the size of a packet to | |
1019 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1020 | instead allowed to set the size to something arbitrarily | |
23860348 | 1021 | large. */ |
11cf8741 | 1022 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 1023 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
1024 | #endif |
1025 | } | |
23860348 | 1026 | /* Extra checks? */ |
11cf8741 JM |
1027 | if (fixed_p && !config->fixed_p) |
1028 | { | |
e2e0b3e5 AC |
1029 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1030 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1031 | config->name, size)) |
8a3fe4f8 | 1032 | error (_("Packet size not changed.")); |
11cf8741 | 1033 | } |
23860348 | 1034 | /* Update the config. */ |
11cf8741 JM |
1035 | config->fixed_p = fixed_p; |
1036 | config->size = size; | |
1037 | } | |
1038 | ||
1039 | static void | |
1040 | show_memory_packet_size (struct memory_packet_config *config) | |
1041 | { | |
a3f17187 | 1042 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1043 | if (config->fixed_p) |
a3f17187 | 1044 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1045 | get_memory_packet_size (config)); |
1046 | else | |
a3f17187 | 1047 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1048 | get_memory_packet_size (config)); |
1049 | } | |
1050 | ||
1051 | static struct memory_packet_config memory_write_packet_config = | |
1052 | { | |
1053 | "memory-write-packet-size", | |
1054 | }; | |
1055 | ||
1056 | static void | |
1057 | set_memory_write_packet_size (char *args, int from_tty) | |
1058 | { | |
1059 | set_memory_packet_size (args, &memory_write_packet_config); | |
1060 | } | |
1061 | ||
1062 | static void | |
1063 | show_memory_write_packet_size (char *args, int from_tty) | |
1064 | { | |
1065 | show_memory_packet_size (&memory_write_packet_config); | |
1066 | } | |
1067 | ||
1068 | static long | |
1069 | get_memory_write_packet_size (void) | |
1070 | { | |
1071 | return get_memory_packet_size (&memory_write_packet_config); | |
1072 | } | |
1073 | ||
1074 | static struct memory_packet_config memory_read_packet_config = | |
1075 | { | |
1076 | "memory-read-packet-size", | |
1077 | }; | |
1078 | ||
1079 | static void | |
1080 | set_memory_read_packet_size (char *args, int from_tty) | |
1081 | { | |
1082 | set_memory_packet_size (args, &memory_read_packet_config); | |
1083 | } | |
1084 | ||
1085 | static void | |
1086 | show_memory_read_packet_size (char *args, int from_tty) | |
1087 | { | |
1088 | show_memory_packet_size (&memory_read_packet_config); | |
1089 | } | |
1090 | ||
1091 | static long | |
1092 | get_memory_read_packet_size (void) | |
1093 | { | |
1094 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1095 | |
11cf8741 JM |
1096 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1097 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1098 | increased beyond this. */ |
1099 | if (size > get_remote_packet_size ()) | |
1100 | size = get_remote_packet_size (); | |
11cf8741 JM |
1101 | return size; |
1102 | } | |
1103 | ||
11cf8741 | 1104 | \f |
5a2468f5 | 1105 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1106 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1107 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1108 | |
1109 | enum packet_support | |
1110 | { | |
1111 | PACKET_SUPPORT_UNKNOWN = 0, | |
1112 | PACKET_ENABLE, | |
1113 | PACKET_DISABLE | |
1114 | }; | |
1115 | ||
5a2468f5 JM |
1116 | struct packet_config |
1117 | { | |
bb572ddd DJ |
1118 | const char *name; |
1119 | const char *title; | |
7f19b9a2 | 1120 | enum auto_boolean detect; |
5a2468f5 JM |
1121 | enum packet_support support; |
1122 | }; | |
1123 | ||
d471ea57 | 1124 | /* Analyze a packet's return value and update the packet config |
23860348 | 1125 | accordingly. */ |
d471ea57 AC |
1126 | |
1127 | enum packet_result | |
1128 | { | |
1129 | PACKET_ERROR, | |
1130 | PACKET_OK, | |
1131 | PACKET_UNKNOWN | |
1132 | }; | |
1133 | ||
5a2468f5 | 1134 | static void |
d471ea57 | 1135 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1136 | { |
d471ea57 AC |
1137 | switch (config->detect) |
1138 | { | |
7f19b9a2 | 1139 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1140 | config->support = PACKET_ENABLE; |
1141 | break; | |
7f19b9a2 | 1142 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1143 | config->support = PACKET_DISABLE; |
1144 | break; | |
7f19b9a2 | 1145 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1146 | config->support = PACKET_SUPPORT_UNKNOWN; |
1147 | break; | |
1148 | } | |
5a2468f5 JM |
1149 | } |
1150 | ||
1151 | static void | |
fba45db2 | 1152 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1153 | { |
1154 | char *support = "internal-error"; | |
a744cf53 | 1155 | |
5a2468f5 JM |
1156 | switch (config->support) |
1157 | { | |
1158 | case PACKET_ENABLE: | |
1159 | support = "enabled"; | |
1160 | break; | |
1161 | case PACKET_DISABLE: | |
1162 | support = "disabled"; | |
1163 | break; | |
1164 | case PACKET_SUPPORT_UNKNOWN: | |
1165 | support = "unknown"; | |
1166 | break; | |
1167 | } | |
1168 | switch (config->detect) | |
1169 | { | |
7f19b9a2 | 1170 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1171 | printf_filtered (_("Support for the `%s' packet " |
1172 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1173 | config->name, support); |
5a2468f5 | 1174 | break; |
7f19b9a2 AC |
1175 | case AUTO_BOOLEAN_TRUE: |
1176 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1177 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1178 | config->name, support); | |
8e248173 | 1179 | break; |
5a2468f5 JM |
1180 | } |
1181 | } | |
1182 | ||
1183 | static void | |
bb572ddd DJ |
1184 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1185 | const char *title, int legacy) | |
d471ea57 | 1186 | { |
5a2468f5 JM |
1187 | char *set_doc; |
1188 | char *show_doc; | |
d471ea57 | 1189 | char *cmd_name; |
3ed07be4 | 1190 | |
5a2468f5 JM |
1191 | config->name = name; |
1192 | config->title = title; | |
7f19b9a2 | 1193 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1194 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1195 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1196 | name, title); | |
3e43a32a MS |
1197 | show_doc = xstrprintf ("Show current use of remote " |
1198 | "protocol `%s' (%s) packet", | |
b435e160 | 1199 | name, title); |
d471ea57 | 1200 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1201 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1202 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1203 | &config->detect, set_doc, |
1204 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1205 | set_remote_protocol_packet_cmd, |
1206 | show_remote_protocol_packet_cmd, | |
1207 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1208 | /* The command code copies the documentation strings. */ |
1209 | xfree (set_doc); | |
1210 | xfree (show_doc); | |
23860348 | 1211 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1212 | if (legacy) |
1213 | { | |
1214 | char *legacy_name; | |
a744cf53 | 1215 | |
b435e160 | 1216 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1217 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1218 | &remote_set_cmdlist); |
d471ea57 | 1219 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1220 | &remote_show_cmdlist); |
d471ea57 | 1221 | } |
5a2468f5 JM |
1222 | } |
1223 | ||
d471ea57 | 1224 | static enum packet_result |
a76d924d | 1225 | packet_check_result (const char *buf) |
5a2468f5 | 1226 | { |
d471ea57 | 1227 | if (buf[0] != '\0') |
5a2468f5 | 1228 | { |
d471ea57 | 1229 | /* The stub recognized the packet request. Check that the |
23860348 | 1230 | operation succeeded. */ |
a76d924d DJ |
1231 | if (buf[0] == 'E' |
1232 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1233 | && buf[3] == '\0') | |
1234 | /* "Enn" - definitly an error. */ | |
1235 | return PACKET_ERROR; | |
1236 | ||
1237 | /* Always treat "E." as an error. This will be used for | |
1238 | more verbose error messages, such as E.memtypes. */ | |
1239 | if (buf[0] == 'E' && buf[1] == '.') | |
1240 | return PACKET_ERROR; | |
1241 | ||
1242 | /* The packet may or may not be OK. Just assume it is. */ | |
1243 | return PACKET_OK; | |
1244 | } | |
1245 | else | |
1246 | /* The stub does not support the packet. */ | |
1247 | return PACKET_UNKNOWN; | |
1248 | } | |
1249 | ||
1250 | static enum packet_result | |
1251 | packet_ok (const char *buf, struct packet_config *config) | |
1252 | { | |
1253 | enum packet_result result; | |
1254 | ||
1255 | result = packet_check_result (buf); | |
1256 | switch (result) | |
1257 | { | |
1258 | case PACKET_OK: | |
1259 | case PACKET_ERROR: | |
1260 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1261 | switch (config->support) |
1262 | { | |
1263 | case PACKET_SUPPORT_UNKNOWN: | |
1264 | if (remote_debug) | |
1265 | fprintf_unfiltered (gdb_stdlog, | |
1266 | "Packet %s (%s) is supported\n", | |
1267 | config->name, config->title); | |
1268 | config->support = PACKET_ENABLE; | |
1269 | break; | |
1270 | case PACKET_DISABLE: | |
8e65ff28 | 1271 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1272 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1273 | break; |
1274 | case PACKET_ENABLE: | |
1275 | break; | |
1276 | } | |
a76d924d DJ |
1277 | break; |
1278 | case PACKET_UNKNOWN: | |
23860348 | 1279 | /* The stub does not support the packet. */ |
d471ea57 AC |
1280 | switch (config->support) |
1281 | { | |
1282 | case PACKET_ENABLE: | |
7f19b9a2 | 1283 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1284 | /* If the stub previously indicated that the packet was |
23860348 | 1285 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1286 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1287 | config->name, config->title); |
1288 | else | |
23860348 | 1289 | /* The user set it wrong. */ |
8a3fe4f8 | 1290 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1291 | config->name, config->title); |
1292 | break; | |
1293 | case PACKET_SUPPORT_UNKNOWN: | |
1294 | if (remote_debug) | |
1295 | fprintf_unfiltered (gdb_stdlog, | |
1296 | "Packet %s (%s) is NOT supported\n", | |
1297 | config->name, config->title); | |
1298 | config->support = PACKET_DISABLE; | |
1299 | break; | |
1300 | case PACKET_DISABLE: | |
1301 | break; | |
1302 | } | |
a76d924d | 1303 | break; |
5a2468f5 | 1304 | } |
a76d924d DJ |
1305 | |
1306 | return result; | |
5a2468f5 JM |
1307 | } |
1308 | ||
444abaca DJ |
1309 | enum { |
1310 | PACKET_vCont = 0, | |
1311 | PACKET_X, | |
1312 | PACKET_qSymbol, | |
1313 | PACKET_P, | |
1314 | PACKET_p, | |
1315 | PACKET_Z0, | |
1316 | PACKET_Z1, | |
1317 | PACKET_Z2, | |
1318 | PACKET_Z3, | |
1319 | PACKET_Z4, | |
a6b151f1 DJ |
1320 | PACKET_vFile_open, |
1321 | PACKET_vFile_pread, | |
1322 | PACKET_vFile_pwrite, | |
1323 | PACKET_vFile_close, | |
1324 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1325 | PACKET_vFile_readlink, |
0876f84a | 1326 | PACKET_qXfer_auxv, |
23181151 | 1327 | PACKET_qXfer_features, |
cfa9d6d9 | 1328 | PACKET_qXfer_libraries, |
2268b414 | 1329 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1330 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1331 | PACKET_qXfer_spu_read, |
1332 | PACKET_qXfer_spu_write, | |
07e059b5 | 1333 | PACKET_qXfer_osdata, |
dc146f7c | 1334 | PACKET_qXfer_threads, |
0fb4aa4b | 1335 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1336 | PACKET_qXfer_traceframe_info, |
169081d0 | 1337 | PACKET_qXfer_uib, |
711e434b | 1338 | PACKET_qGetTIBAddr, |
444abaca | 1339 | PACKET_qGetTLSAddr, |
be2a5f71 | 1340 | PACKET_qSupported, |
bd3eecc3 | 1341 | PACKET_qTStatus, |
89be2091 | 1342 | PACKET_QPassSignals, |
9b224c5e | 1343 | PACKET_QProgramSignals, |
08388c79 | 1344 | PACKET_qSearch_memory, |
2d717e4f DJ |
1345 | PACKET_vAttach, |
1346 | PACKET_vRun, | |
a6f3e723 | 1347 | PACKET_QStartNoAckMode, |
82f73884 | 1348 | PACKET_vKill, |
4aa995e1 PA |
1349 | PACKET_qXfer_siginfo_read, |
1350 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1351 | PACKET_qAttached, |
782b2b07 | 1352 | PACKET_ConditionalTracepoints, |
3788aec7 | 1353 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1354 | PACKET_BreakpointCommands, |
7a697b8d | 1355 | PACKET_FastTracepoints, |
0fb4aa4b | 1356 | PACKET_StaticTracepoints, |
1e4d1764 | 1357 | PACKET_InstallInTrace, |
40ab02ce MS |
1358 | PACKET_bc, |
1359 | PACKET_bs, | |
409873ef | 1360 | PACKET_TracepointSource, |
d914c394 | 1361 | PACKET_QAllow, |
78d85199 | 1362 | PACKET_qXfer_fdpic, |
03583c20 | 1363 | PACKET_QDisableRandomization, |
d1feda86 | 1364 | PACKET_QAgent, |
f6f899bf | 1365 | PACKET_QTBuffer_size, |
9accd112 MM |
1366 | PACKET_Qbtrace_off, |
1367 | PACKET_Qbtrace_bts, | |
1368 | PACKET_qXfer_btrace, | |
444abaca DJ |
1369 | PACKET_MAX |
1370 | }; | |
506fb367 | 1371 | |
444abaca | 1372 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1373 | |
1374 | static void | |
444abaca DJ |
1375 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1376 | struct cmd_list_element *c) | |
dc8acb97 | 1377 | { |
444abaca | 1378 | struct packet_config *packet; |
dc8acb97 | 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 | update_packet_config (packet); | |
1387 | return; | |
1388 | } | |
1389 | } | |
9b20d036 | 1390 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1391 | c->name); |
dc8acb97 MS |
1392 | } |
1393 | ||
5a2468f5 | 1394 | static void |
444abaca DJ |
1395 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1396 | struct cmd_list_element *c, | |
1397 | const char *value) | |
5a2468f5 | 1398 | { |
444abaca | 1399 | struct packet_config *packet; |
5a2468f5 | 1400 | |
444abaca DJ |
1401 | for (packet = remote_protocol_packets; |
1402 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1403 | packet++) | |
1404 | { | |
1405 | if (&packet->detect == c->var) | |
1406 | { | |
1407 | show_packet_config_cmd (packet); | |
1408 | return; | |
1409 | } | |
1410 | } | |
9b20d036 | 1411 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1412 | c->name); |
5a2468f5 JM |
1413 | } |
1414 | ||
d471ea57 AC |
1415 | /* Should we try one of the 'Z' requests? */ |
1416 | ||
1417 | enum Z_packet_type | |
1418 | { | |
1419 | Z_PACKET_SOFTWARE_BP, | |
1420 | Z_PACKET_HARDWARE_BP, | |
1421 | Z_PACKET_WRITE_WP, | |
1422 | Z_PACKET_READ_WP, | |
1423 | Z_PACKET_ACCESS_WP, | |
1424 | NR_Z_PACKET_TYPES | |
1425 | }; | |
96baa820 | 1426 | |
d471ea57 | 1427 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1428 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1429 | |
7f19b9a2 | 1430 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1431 | |
1432 | static void | |
fba45db2 KB |
1433 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1434 | struct cmd_list_element *c) | |
96baa820 | 1435 | { |
d471ea57 | 1436 | int i; |
a744cf53 | 1437 | |
d471ea57 AC |
1438 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1439 | { | |
444abaca DJ |
1440 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1441 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1442 | } |
96baa820 JM |
1443 | } |
1444 | ||
1445 | static void | |
08546159 AC |
1446 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1447 | struct cmd_list_element *c, | |
1448 | const char *value) | |
96baa820 | 1449 | { |
d471ea57 | 1450 | int i; |
a744cf53 | 1451 | |
d471ea57 AC |
1452 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1453 | { | |
444abaca | 1454 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1455 | } |
96baa820 JM |
1456 | } |
1457 | ||
23860348 | 1458 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1459 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1460 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1461 | |
74531fed PA |
1462 | \f |
1463 | /* Asynchronous signal handle registered as event loop source for | |
1464 | when we have pending events ready to be passed to the core. */ | |
1465 | ||
1466 | static struct async_event_handler *remote_async_inferior_event_token; | |
1467 | ||
c906108c SS |
1468 | \f |
1469 | ||
79d7f229 PA |
1470 | static ptid_t magic_null_ptid; |
1471 | static ptid_t not_sent_ptid; | |
1472 | static ptid_t any_thread_ptid; | |
1473 | ||
0b16c5cf PA |
1474 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1475 | detach instead of killing it when bailing out). */ | |
1476 | ||
1477 | static int | |
1478 | remote_query_attached (int pid) | |
1479 | { | |
1480 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1481 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1482 | |
1483 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1484 | return 0; | |
1485 | ||
1486 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1487 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1488 | else |
bba74b36 | 1489 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1490 | |
1491 | putpkt (rs->buf); | |
1492 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1493 | ||
1494 | switch (packet_ok (rs->buf, | |
1554e9be | 1495 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1496 | { |
1497 | case PACKET_OK: | |
1498 | if (strcmp (rs->buf, "1") == 0) | |
1499 | return 1; | |
1500 | break; | |
1501 | case PACKET_ERROR: | |
1502 | warning (_("Remote failure reply: %s"), rs->buf); | |
1503 | break; | |
1504 | case PACKET_UNKNOWN: | |
1505 | break; | |
1506 | } | |
1507 | ||
1508 | return 0; | |
1509 | } | |
1510 | ||
49c62f2e PA |
1511 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1512 | has been invented by GDB, instead of reported by the target. Since | |
1513 | we can be connected to a remote system before before knowing about | |
1514 | any inferior, mark the target with execution when we find the first | |
1515 | inferior. If ATTACHED is 1, then we had just attached to this | |
1516 | inferior. If it is 0, then we just created this inferior. If it | |
1517 | is -1, then try querying the remote stub to find out if it had | |
1518 | attached to the inferior or not. */ | |
1941c569 PA |
1519 | |
1520 | static struct inferior * | |
49c62f2e | 1521 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1522 | { |
1941c569 PA |
1523 | struct inferior *inf; |
1524 | ||
0b16c5cf PA |
1525 | /* Check whether this process we're learning about is to be |
1526 | considered attached, or if is to be considered to have been | |
1527 | spawned by the stub. */ | |
1528 | if (attached == -1) | |
1529 | attached = remote_query_attached (pid); | |
1530 | ||
f5656ead | 1531 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1532 | { |
1533 | /* If the target shares code across all inferiors, then every | |
1534 | attach adds a new inferior. */ | |
1535 | inf = add_inferior (pid); | |
1536 | ||
1537 | /* ... and every inferior is bound to the same program space. | |
1538 | However, each inferior may still have its own address | |
1539 | space. */ | |
1540 | inf->aspace = maybe_new_address_space (); | |
1541 | inf->pspace = current_program_space; | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | /* In the traditional debugging scenario, there's a 1-1 match | |
1546 | between program/address spaces. We simply bind the inferior | |
1547 | to the program space's address space. */ | |
1548 | inf = current_inferior (); | |
1549 | inferior_appeared (inf, pid); | |
1550 | } | |
1941c569 | 1551 | |
0b16c5cf | 1552 | inf->attach_flag = attached; |
49c62f2e | 1553 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1554 | |
1941c569 PA |
1555 | return inf; |
1556 | } | |
1557 | ||
1558 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1559 | according to RUNNING. */ | |
1560 | ||
c906108c | 1561 | static void |
1941c569 | 1562 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1563 | { |
b7ea362b PA |
1564 | struct remote_state *rs = get_remote_state (); |
1565 | ||
1566 | /* GDB historically didn't pull threads in the initial connection | |
1567 | setup. If the remote target doesn't even have a concept of | |
1568 | threads (e.g., a bare-metal target), even if internally we | |
1569 | consider that a single-threaded target, mentioning a new thread | |
1570 | might be confusing to the user. Be silent then, preserving the | |
1571 | age old behavior. */ | |
1572 | if (rs->starting_up) | |
1573 | add_thread_silent (ptid); | |
1574 | else | |
1575 | add_thread (ptid); | |
1941c569 PA |
1576 | |
1577 | set_executing (ptid, running); | |
1578 | set_running (ptid, running); | |
1579 | } | |
1580 | ||
1581 | /* Come here when we learn about a thread id from the remote target. | |
1582 | It may be the first time we hear about such thread, so take the | |
1583 | opportunity to add it to GDB's thread list. In case this is the | |
1584 | first time we're noticing its corresponding inferior, add it to | |
1585 | GDB's inferior list as well. */ | |
1586 | ||
1587 | static void | |
1588 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1589 | { | |
c906108c SS |
1590 | /* If this is a new thread, add it to GDB's thread list. |
1591 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1592 | |
1593 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1594 | { | |
1595 | /* We're seeing an event on a thread id we knew had exited. | |
1596 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1597 | remote_add_thread (currthread, running); |
82f73884 PA |
1598 | return; |
1599 | } | |
1600 | ||
79d7f229 | 1601 | if (!in_thread_list (currthread)) |
c0a2216e | 1602 | { |
1941c569 | 1603 | struct inferior *inf = NULL; |
bad34192 | 1604 | int pid = ptid_get_pid (currthread); |
1941c569 | 1605 | |
bad34192 PA |
1606 | if (ptid_is_pid (inferior_ptid) |
1607 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1608 | { |
1609 | /* inferior_ptid has no thread member yet. This can happen | |
1610 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1611 | stub doesn't support qC. This is the first stop reported | |
1612 | after an attach, so this is the main thread. Update the | |
1613 | ptid in the thread list. */ | |
bad34192 PA |
1614 | if (in_thread_list (pid_to_ptid (pid))) |
1615 | thread_change_ptid (inferior_ptid, currthread); | |
1616 | else | |
1617 | { | |
1618 | remote_add_thread (currthread, running); | |
1619 | inferior_ptid = currthread; | |
1620 | } | |
dc146f7c | 1621 | return; |
c0a2216e | 1622 | } |
82f73884 PA |
1623 | |
1624 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1625 | { |
1626 | /* inferior_ptid is not set yet. This can happen with the | |
1627 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1628 | doesn't support qC. This is the first stop reported | |
1629 | after an attach, so this is the main thread. Update the | |
1630 | ptid in the thread list. */ | |
dc146f7c | 1631 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1632 | return; |
c0a2216e | 1633 | } |
82f73884 | 1634 | |
29c87f7f PA |
1635 | /* When connecting to a target remote, or to a target |
1636 | extended-remote which already was debugging an inferior, we | |
1637 | may not know about it yet. Add it before adding its child | |
1638 | thread, so notifications are emitted in a sensible order. */ | |
1639 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1640 | { |
1641 | struct remote_state *rs = get_remote_state (); | |
1642 | int fake_pid_p = !remote_multi_process_p (rs); | |
1643 | ||
1644 | inf = remote_add_inferior (fake_pid_p, | |
1645 | ptid_get_pid (currthread), -1); | |
1646 | } | |
29c87f7f | 1647 | |
82f73884 | 1648 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1649 | remote_add_thread (currthread, running); |
1650 | ||
1651 | /* If we found a new inferior, let the common code do whatever | |
1652 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1653 | breakpoints), unless we're just setting up an all-stop |
1654 | connection. */ | |
1941c569 | 1655 | if (inf != NULL) |
b7ea362b PA |
1656 | { |
1657 | struct remote_state *rs = get_remote_state (); | |
1658 | ||
1659 | if (non_stop || !rs->starting_up) | |
1660 | notice_new_inferior (currthread, running, 0); | |
1661 | } | |
c0a2216e | 1662 | } |
c906108c SS |
1663 | } |
1664 | ||
dc146f7c VP |
1665 | /* Return the private thread data, creating it if necessary. */ |
1666 | ||
70221824 | 1667 | static struct private_thread_info * |
dc146f7c VP |
1668 | demand_private_info (ptid_t ptid) |
1669 | { | |
1670 | struct thread_info *info = find_thread_ptid (ptid); | |
1671 | ||
1672 | gdb_assert (info); | |
1673 | ||
1674 | if (!info->private) | |
1675 | { | |
1676 | info->private = xmalloc (sizeof (*(info->private))); | |
1677 | info->private_dtor = free_private_thread_info; | |
1678 | info->private->core = -1; | |
1679 | info->private->extra = 0; | |
1680 | } | |
1681 | ||
1682 | return info->private; | |
1683 | } | |
1684 | ||
74531fed PA |
1685 | /* Call this function as a result of |
1686 | 1) A halt indication (T packet) containing a thread id | |
1687 | 2) A direct query of currthread | |
0df8b418 | 1688 | 3) Successful execution of set thread */ |
74531fed PA |
1689 | |
1690 | static void | |
47f8a51d | 1691 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1692 | { |
47f8a51d | 1693 | rs->general_thread = currthread; |
74531fed PA |
1694 | } |
1695 | ||
89be2091 DJ |
1696 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1697 | it can simply pass through to the inferior without reporting. */ | |
1698 | ||
1699 | static void | |
2455069d | 1700 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1701 | { |
1702 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1703 | { | |
1704 | char *pass_packet, *p; | |
89be2091 | 1705 | int count = 0, i; |
747dc59d | 1706 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1707 | |
1708 | gdb_assert (numsigs < 256); | |
1709 | for (i = 0; i < numsigs; i++) | |
1710 | { | |
2455069d | 1711 | if (pass_signals[i]) |
89be2091 DJ |
1712 | count++; |
1713 | } | |
1714 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1715 | strcpy (pass_packet, "QPassSignals:"); | |
1716 | p = pass_packet + strlen (pass_packet); | |
1717 | for (i = 0; i < numsigs; i++) | |
1718 | { | |
2455069d | 1719 | if (pass_signals[i]) |
89be2091 DJ |
1720 | { |
1721 | if (i >= 16) | |
1722 | *p++ = tohex (i >> 4); | |
1723 | *p++ = tohex (i & 15); | |
1724 | if (count) | |
1725 | *p++ = ';'; | |
1726 | else | |
1727 | break; | |
1728 | count--; | |
1729 | } | |
1730 | } | |
1731 | *p = 0; | |
747dc59d | 1732 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1733 | { |
89be2091 DJ |
1734 | char *buf = rs->buf; |
1735 | ||
1736 | putpkt (pass_packet); | |
1737 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1738 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
747dc59d TT |
1739 | if (rs->last_pass_packet) |
1740 | xfree (rs->last_pass_packet); | |
1741 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1742 | } |
1743 | else | |
1744 | xfree (pass_packet); | |
1745 | } | |
1746 | } | |
1747 | ||
9b224c5e PA |
1748 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1749 | signals it should pass through to the inferior when detaching. */ | |
1750 | ||
1751 | static void | |
1752 | remote_program_signals (int numsigs, unsigned char *signals) | |
1753 | { | |
1754 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1755 | { | |
1756 | char *packet, *p; | |
1757 | int count = 0, i; | |
5e4a05c4 | 1758 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1759 | |
1760 | gdb_assert (numsigs < 256); | |
1761 | for (i = 0; i < numsigs; i++) | |
1762 | { | |
1763 | if (signals[i]) | |
1764 | count++; | |
1765 | } | |
1766 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1767 | strcpy (packet, "QProgramSignals:"); | |
1768 | p = packet + strlen (packet); | |
1769 | for (i = 0; i < numsigs; i++) | |
1770 | { | |
1771 | if (signal_pass_state (i)) | |
1772 | { | |
1773 | if (i >= 16) | |
1774 | *p++ = tohex (i >> 4); | |
1775 | *p++ = tohex (i & 15); | |
1776 | if (count) | |
1777 | *p++ = ';'; | |
1778 | else | |
1779 | break; | |
1780 | count--; | |
1781 | } | |
1782 | } | |
1783 | *p = 0; | |
5e4a05c4 TT |
1784 | if (!rs->last_program_signals_packet |
1785 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1786 | { |
9b224c5e PA |
1787 | char *buf = rs->buf; |
1788 | ||
1789 | putpkt (packet); | |
1790 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1791 | packet_ok (buf, &remote_protocol_packets[PACKET_QProgramSignals]); | |
5e4a05c4 TT |
1792 | xfree (rs->last_program_signals_packet); |
1793 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1794 | } |
1795 | else | |
1796 | xfree (packet); | |
1797 | } | |
1798 | } | |
1799 | ||
79d7f229 PA |
1800 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1801 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1802 | thread. If GEN is set, set the general thread, if not, then set | |
1803 | the step/continue thread. */ | |
c906108c | 1804 | static void |
79d7f229 | 1805 | set_thread (struct ptid ptid, int gen) |
c906108c | 1806 | { |
d01949b6 | 1807 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1808 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1809 | char *buf = rs->buf; |
79d7f229 | 1810 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1811 | |
79d7f229 | 1812 | if (ptid_equal (state, ptid)) |
c906108c SS |
1813 | return; |
1814 | ||
79d7f229 PA |
1815 | *buf++ = 'H'; |
1816 | *buf++ = gen ? 'g' : 'c'; | |
1817 | if (ptid_equal (ptid, magic_null_ptid)) | |
1818 | xsnprintf (buf, endbuf - buf, "0"); | |
1819 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1820 | xsnprintf (buf, endbuf - buf, "0"); | |
1821 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1822 | xsnprintf (buf, endbuf - buf, "-1"); | |
1823 | else | |
82f73884 | 1824 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1825 | putpkt (rs->buf); |
6d820c5c | 1826 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1827 | if (gen) |
47f8a51d | 1828 | rs->general_thread = ptid; |
c906108c | 1829 | else |
47f8a51d | 1830 | rs->continue_thread = ptid; |
c906108c | 1831 | } |
79d7f229 PA |
1832 | |
1833 | static void | |
1834 | set_general_thread (struct ptid ptid) | |
1835 | { | |
1836 | set_thread (ptid, 1); | |
1837 | } | |
1838 | ||
1839 | static void | |
1840 | set_continue_thread (struct ptid ptid) | |
1841 | { | |
1842 | set_thread (ptid, 0); | |
1843 | } | |
1844 | ||
3c9c4b83 PA |
1845 | /* Change the remote current process. Which thread within the process |
1846 | ends up selected isn't important, as long as it is the same process | |
1847 | as what INFERIOR_PTID points to. | |
1848 | ||
1849 | This comes from that fact that there is no explicit notion of | |
1850 | "selected process" in the protocol. The selected process for | |
1851 | general operations is the process the selected general thread | |
1852 | belongs to. */ | |
1853 | ||
1854 | static void | |
1855 | set_general_process (void) | |
1856 | { | |
1857 | struct remote_state *rs = get_remote_state (); | |
1858 | ||
1859 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1860 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1861 | return; |
1862 | ||
1863 | /* We only need to change the remote current thread if it's pointing | |
1864 | at some other process. */ | |
47f8a51d | 1865 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1866 | set_general_thread (inferior_ptid); |
1867 | } | |
1868 | ||
c906108c | 1869 | \f |
79d7f229 PA |
1870 | /* Return nonzero if the thread PTID is still alive on the remote |
1871 | system. */ | |
c906108c SS |
1872 | |
1873 | static int | |
28439f5e | 1874 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1875 | { |
6d820c5c | 1876 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1877 | char *p, *endp; |
c906108c | 1878 | |
c0a2216e PA |
1879 | if (ptid_equal (ptid, magic_null_ptid)) |
1880 | /* The main thread is always alive. */ | |
1881 | return 1; | |
1882 | ||
1883 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1884 | /* The main thread is always alive. This can happen after a | |
1885 | vAttach, if the remote side doesn't support | |
1886 | multi-threading. */ | |
1887 | return 1; | |
1888 | ||
82f73884 PA |
1889 | p = rs->buf; |
1890 | endp = rs->buf + get_remote_packet_size (); | |
1891 | ||
1892 | *p++ = 'T'; | |
1893 | write_ptid (p, endp, ptid); | |
1894 | ||
2e9f7625 | 1895 | putpkt (rs->buf); |
6d820c5c | 1896 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1897 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1898 | } |
1899 | ||
1900 | /* About these extended threadlist and threadinfo packets. They are | |
1901 | variable length packets but, the fields within them are often fixed | |
1902 | length. They are redundent enough to send over UDP as is the | |
1903 | remote protocol in general. There is a matching unit test module | |
1904 | in libstub. */ | |
1905 | ||
23860348 | 1906 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1907 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1908 | changable. */ |
cce74817 JM |
1909 | |
1910 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1911 | Plan to fix this. */ |
cce74817 | 1912 | |
23860348 | 1913 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1914 | |
9d1f7ab2 | 1915 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1916 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1917 | |
1918 | struct gdb_ext_thread_info | |
c5aa993b | 1919 | { |
23860348 | 1920 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1921 | int active; /* Has state interesting to GDB? |
23860348 | 1922 | regs, stack. */ |
2bc416ba | 1923 | char display[256]; /* Brief state display, name, |
cedea757 | 1924 | blocked/suspended. */ |
23860348 | 1925 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1926 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1927 | whatever. */ |
c5aa993b | 1928 | }; |
cce74817 JM |
1929 | |
1930 | /* The volume of remote transfers can be limited by submitting | |
1931 | a mask containing bits specifying the desired information. | |
1932 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1933 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1934 | |
1935 | #define TAG_THREADID 1 | |
1936 | #define TAG_EXISTS 2 | |
1937 | #define TAG_DISPLAY 4 | |
1938 | #define TAG_THREADNAME 8 | |
c5aa993b | 1939 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1940 | |
23860348 | 1941 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1942 | |
b2dd6311 | 1943 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1944 | |
a14ed312 | 1945 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1946 | |
a14ed312 | 1947 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1948 | |
23860348 | 1949 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1950 | |
a14ed312 | 1951 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1952 | |
a14ed312 | 1953 | static char *pack_int (char *buf, int value); |
cce74817 | 1954 | |
a14ed312 | 1955 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1956 | |
a14ed312 | 1957 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1958 | |
23860348 | 1959 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1960 | |
23860348 | 1961 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1962 | |
23860348 | 1963 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1964 | |
23860348 | 1965 | static int threadref_to_int (threadref *ref); |
cce74817 | 1966 | |
23860348 | 1967 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1968 | |
23860348 | 1969 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1970 | |
2bc416ba | 1971 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1972 | threadref *id); |
cce74817 | 1973 | |
a14ed312 | 1974 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1975 | threadref *expectedref, |
a14ed312 KB |
1976 | struct gdb_ext_thread_info |
1977 | *info); | |
cce74817 JM |
1978 | |
1979 | ||
2bc416ba | 1980 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1981 | int fieldset, /*TAG mask */ |
a14ed312 | 1982 | struct gdb_ext_thread_info *info); |
cce74817 | 1983 | |
a14ed312 KB |
1984 | static char *pack_threadlist_request (char *pkt, int startflag, |
1985 | int threadcount, | |
23860348 | 1986 | threadref *nextthread); |
cce74817 | 1987 | |
a14ed312 KB |
1988 | static int parse_threadlist_response (char *pkt, |
1989 | int result_limit, | |
23860348 | 1990 | threadref *original_echo, |
2bc416ba | 1991 | threadref *resultlist, |
23860348 | 1992 | int *doneflag); |
cce74817 | 1993 | |
a14ed312 | 1994 | static int remote_get_threadlist (int startflag, |
23860348 | 1995 | threadref *nextthread, |
a14ed312 KB |
1996 | int result_limit, |
1997 | int *done, | |
2bc416ba | 1998 | int *result_count, |
23860348 | 1999 | threadref *threadlist); |
cce74817 | 2000 | |
23860348 | 2001 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2002 | |
a14ed312 KB |
2003 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2004 | void *context, int looplimit); | |
cce74817 | 2005 | |
23860348 | 2006 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2007 | |
82f73884 PA |
2008 | |
2009 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2010 | buffer we're allowed to write to. Returns | |
2011 | BUF+CHARACTERS_WRITTEN. */ | |
2012 | ||
2013 | static char * | |
2014 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2015 | { | |
2016 | int pid, tid; | |
2017 | struct remote_state *rs = get_remote_state (); | |
2018 | ||
2019 | if (remote_multi_process_p (rs)) | |
2020 | { | |
2021 | pid = ptid_get_pid (ptid); | |
2022 | if (pid < 0) | |
2023 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2024 | else | |
2025 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2026 | } | |
2027 | tid = ptid_get_tid (ptid); | |
2028 | if (tid < 0) | |
2029 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2030 | else | |
2031 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2032 | ||
2033 | return buf; | |
2034 | } | |
2035 | ||
2036 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2037 | passed the last parsed char. Returns null_ptid on error. */ | |
2038 | ||
2039 | static ptid_t | |
2040 | read_ptid (char *buf, char **obuf) | |
2041 | { | |
2042 | char *p = buf; | |
2043 | char *pp; | |
2044 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2045 | |
2046 | if (*p == 'p') | |
2047 | { | |
2048 | /* Multi-process ptid. */ | |
2049 | pp = unpack_varlen_hex (p + 1, &pid); | |
2050 | if (*pp != '.') | |
b37520b6 | 2051 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2052 | |
2053 | p = pp; | |
2054 | pp = unpack_varlen_hex (p + 1, &tid); | |
2055 | if (obuf) | |
2056 | *obuf = pp; | |
2057 | return ptid_build (pid, 0, tid); | |
2058 | } | |
2059 | ||
2060 | /* No multi-process. Just a tid. */ | |
2061 | pp = unpack_varlen_hex (p, &tid); | |
2062 | ||
2063 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2064 | what's in inferior_ptid, unless it's null at this point. If so, |
2065 | then since there's no way to know the pid of the reported | |
2066 | threads, use the magic number. */ | |
2067 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2068 | pid = ptid_get_pid (magic_null_ptid); | |
2069 | else | |
2070 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2071 | |
2072 | if (obuf) | |
2073 | *obuf = pp; | |
2074 | return ptid_build (pid, 0, tid); | |
2075 | } | |
2076 | ||
23860348 | 2077 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2078 | |
2079 | static const char hexchars[] = "0123456789abcdef"; | |
2080 | ||
2081 | static int | |
fba45db2 | 2082 | ishex (int ch, int *val) |
c906108c SS |
2083 | { |
2084 | if ((ch >= 'a') && (ch <= 'f')) | |
2085 | { | |
2086 | *val = ch - 'a' + 10; | |
2087 | return 1; | |
2088 | } | |
2089 | if ((ch >= 'A') && (ch <= 'F')) | |
2090 | { | |
2091 | *val = ch - 'A' + 10; | |
2092 | return 1; | |
2093 | } | |
2094 | if ((ch >= '0') && (ch <= '9')) | |
2095 | { | |
2096 | *val = ch - '0'; | |
2097 | return 1; | |
2098 | } | |
2099 | return 0; | |
2100 | } | |
2101 | ||
2102 | static int | |
fba45db2 | 2103 | stubhex (int ch) |
c906108c SS |
2104 | { |
2105 | if (ch >= 'a' && ch <= 'f') | |
2106 | return ch - 'a' + 10; | |
2107 | if (ch >= '0' && ch <= '9') | |
2108 | return ch - '0'; | |
2109 | if (ch >= 'A' && ch <= 'F') | |
2110 | return ch - 'A' + 10; | |
2111 | return -1; | |
2112 | } | |
2113 | ||
2114 | static int | |
fba45db2 | 2115 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2116 | { |
2117 | int nibble; | |
2118 | int retval = 0; | |
2119 | ||
2120 | while (fieldlength) | |
2121 | { | |
2122 | nibble = stubhex (*buff++); | |
2123 | retval |= nibble; | |
2124 | fieldlength--; | |
2125 | if (fieldlength) | |
2126 | retval = retval << 4; | |
2127 | } | |
2128 | return retval; | |
2129 | } | |
2130 | ||
2131 | char * | |
fba45db2 | 2132 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2133 | ULONGEST *result) |
c906108c SS |
2134 | { |
2135 | int nibble; | |
d49c44d5 | 2136 | ULONGEST retval = 0; |
c906108c SS |
2137 | |
2138 | while (ishex (*buff, &nibble)) | |
2139 | { | |
2140 | buff++; | |
2141 | retval = retval << 4; | |
2142 | retval |= nibble & 0x0f; | |
2143 | } | |
2144 | *result = retval; | |
2145 | return buff; | |
2146 | } | |
2147 | ||
2148 | static char * | |
fba45db2 | 2149 | unpack_nibble (char *buf, int *val) |
c906108c | 2150 | { |
b7589f7d | 2151 | *val = fromhex (*buf++); |
c906108c SS |
2152 | return buf; |
2153 | } | |
2154 | ||
2155 | static char * | |
fba45db2 | 2156 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2157 | { |
2158 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2159 | return buf; | |
2160 | } | |
2161 | ||
2162 | static char * | |
fba45db2 | 2163 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2164 | { |
2165 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2166 | *pkt++ = hexchars[(byte & 0xf)]; | |
2167 | return pkt; | |
2168 | } | |
2169 | ||
2170 | static char * | |
fba45db2 | 2171 | unpack_byte (char *buf, int *value) |
c906108c SS |
2172 | { |
2173 | *value = stub_unpack_int (buf, 2); | |
2174 | return buf + 2; | |
2175 | } | |
2176 | ||
2177 | static char * | |
fba45db2 | 2178 | pack_int (char *buf, int value) |
c906108c SS |
2179 | { |
2180 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2181 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2182 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2183 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2184 | return buf; | |
2185 | } | |
2186 | ||
2187 | static char * | |
fba45db2 | 2188 | unpack_int (char *buf, int *value) |
c906108c SS |
2189 | { |
2190 | *value = stub_unpack_int (buf, 8); | |
2191 | return buf + 8; | |
2192 | } | |
2193 | ||
23860348 | 2194 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2195 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2196 | |
2197 | static char * | |
fba45db2 | 2198 | pack_string (char *pkt, char *string) |
c906108c SS |
2199 | { |
2200 | char ch; | |
2201 | int len; | |
2202 | ||
2203 | len = strlen (string); | |
2204 | if (len > 200) | |
23860348 | 2205 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2206 | pkt = pack_hex_byte (pkt, len); |
2207 | while (len-- > 0) | |
2208 | { | |
2209 | ch = *string++; | |
2210 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2211 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2212 | *pkt++ = ch; |
2213 | } | |
2214 | return pkt; | |
2215 | } | |
2216 | #endif /* 0 (unused) */ | |
2217 | ||
2218 | static char * | |
fba45db2 | 2219 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2220 | { |
2221 | while (length--) | |
2222 | *dest++ = *src++; | |
2223 | *dest = '\0'; | |
2224 | return src; | |
2225 | } | |
2226 | ||
2227 | static char * | |
fba45db2 | 2228 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2229 | { |
2230 | char *limit; | |
2231 | unsigned char *altid; | |
2232 | ||
2233 | altid = (unsigned char *) id; | |
2234 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2235 | while (pkt < limit) | |
2236 | pkt = pack_hex_byte (pkt, *altid++); | |
2237 | return pkt; | |
2238 | } | |
2239 | ||
2240 | ||
2241 | static char * | |
fba45db2 | 2242 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2243 | { |
2244 | char *altref; | |
2245 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2246 | int x, y; | |
2247 | ||
2248 | altref = (char *) id; | |
2249 | ||
2250 | while (inbuf < limit) | |
2251 | { | |
2252 | x = stubhex (*inbuf++); | |
2253 | y = stubhex (*inbuf++); | |
2254 | *altref++ = (x << 4) | y; | |
2255 | } | |
2256 | return inbuf; | |
2257 | } | |
2258 | ||
2259 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2260 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2261 | to use 64bit thread references internally. This is an adapter |
2262 | function. */ | |
2263 | ||
2264 | void | |
fba45db2 | 2265 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2266 | { |
2267 | unsigned char *scan; | |
2268 | ||
2269 | scan = (unsigned char *) id; | |
2270 | { | |
2271 | int i = 4; | |
2272 | while (i--) | |
2273 | *scan++ = 0; | |
2274 | } | |
2275 | *scan++ = (value >> 24) & 0xff; | |
2276 | *scan++ = (value >> 16) & 0xff; | |
2277 | *scan++ = (value >> 8) & 0xff; | |
2278 | *scan++ = (value & 0xff); | |
2279 | } | |
2280 | ||
2281 | static int | |
fba45db2 | 2282 | threadref_to_int (threadref *ref) |
c906108c SS |
2283 | { |
2284 | int i, value = 0; | |
2285 | unsigned char *scan; | |
2286 | ||
cfd77fa1 | 2287 | scan = *ref; |
c906108c SS |
2288 | scan += 4; |
2289 | i = 4; | |
2290 | while (i-- > 0) | |
2291 | value = (value << 8) | ((*scan++) & 0xff); | |
2292 | return value; | |
2293 | } | |
2294 | ||
2295 | static void | |
fba45db2 | 2296 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2297 | { |
2298 | int i; | |
2299 | unsigned char *csrc, *cdest; | |
2300 | ||
2301 | csrc = (unsigned char *) src; | |
2302 | cdest = (unsigned char *) dest; | |
2303 | i = 8; | |
2304 | while (i--) | |
2305 | *cdest++ = *csrc++; | |
2306 | } | |
2307 | ||
2308 | static int | |
fba45db2 | 2309 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2310 | { |
23860348 | 2311 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2312 | #if 0 |
2313 | unsigned char *srcp, *destp; | |
2314 | int i, result; | |
2315 | srcp = (char *) src; | |
2316 | destp = (char *) dest; | |
2317 | ||
2318 | result = 1; | |
2319 | while (i-- > 0) | |
2320 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2321 | return result; | |
2322 | #endif | |
2323 | return 1; | |
2324 | } | |
2325 | ||
2326 | /* | |
c5aa993b JM |
2327 | threadid:1, # always request threadid |
2328 | context_exists:2, | |
2329 | display:4, | |
2330 | unique_name:8, | |
2331 | more_display:16 | |
2332 | */ | |
c906108c SS |
2333 | |
2334 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2335 | ||
2336 | static char * | |
fba45db2 | 2337 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2338 | { |
23860348 MS |
2339 | *pkt++ = 'q'; /* Info Query */ |
2340 | *pkt++ = 'P'; /* process or thread info */ | |
2341 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2342 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2343 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2344 | return pkt; |
2345 | } | |
2346 | ||
23860348 | 2347 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2348 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2349 | add more fields as time goes by. */ |
c906108c | 2350 | |
23860348 | 2351 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2352 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2353 | fetch registers and its stack? */ |
c5aa993b | 2354 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2355 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2356 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2357 | the process. */ |
c906108c SS |
2358 | |
2359 | static int | |
fba45db2 KB |
2360 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2361 | struct gdb_ext_thread_info *info) | |
c906108c | 2362 | { |
d01949b6 | 2363 | struct remote_state *rs = get_remote_state (); |
c906108c | 2364 | int mask, length; |
cfd77fa1 | 2365 | int tag; |
c906108c | 2366 | threadref ref; |
6d820c5c | 2367 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2368 | int retval = 1; |
2369 | ||
23860348 | 2370 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2371 | info->active = 0; |
2372 | info->display[0] = '\0'; | |
2373 | info->shortname[0] = '\0'; | |
2374 | info->more_display[0] = '\0'; | |
2375 | ||
23860348 MS |
2376 | /* Assume the characters indicating the packet type have been |
2377 | stripped. */ | |
c906108c SS |
2378 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2379 | pkt = unpack_threadid (pkt, &ref); | |
2380 | ||
2381 | if (mask == 0) | |
8a3fe4f8 | 2382 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2383 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2384 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2385 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2386 | return 0; |
2387 | } | |
2388 | copy_threadref (&info->threadid, &ref); | |
2389 | ||
23860348 | 2390 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2391 | |
23860348 MS |
2392 | /* Packets are terminated with nulls. */ |
2393 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2394 | { |
2395 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2396 | pkt = unpack_byte (pkt, &length); /* length */ |
2397 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2398 | { |
8a3fe4f8 | 2399 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2400 | retval = 0; |
2401 | break; | |
2402 | } | |
2403 | if (tag == TAG_THREADID) | |
2404 | { | |
2405 | if (length != 16) | |
2406 | { | |
8a3fe4f8 | 2407 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2408 | retval = 0; |
2409 | break; | |
2410 | } | |
2411 | pkt = unpack_threadid (pkt, &ref); | |
2412 | mask = mask & ~TAG_THREADID; | |
2413 | continue; | |
2414 | } | |
2415 | if (tag == TAG_EXISTS) | |
2416 | { | |
2417 | info->active = stub_unpack_int (pkt, length); | |
2418 | pkt += length; | |
2419 | mask = mask & ~(TAG_EXISTS); | |
2420 | if (length > 8) | |
2421 | { | |
8a3fe4f8 | 2422 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2423 | retval = 0; |
2424 | break; | |
2425 | } | |
2426 | continue; | |
2427 | } | |
2428 | if (tag == TAG_THREADNAME) | |
2429 | { | |
2430 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2431 | mask = mask & ~TAG_THREADNAME; | |
2432 | continue; | |
2433 | } | |
2434 | if (tag == TAG_DISPLAY) | |
2435 | { | |
2436 | pkt = unpack_string (pkt, &info->display[0], length); | |
2437 | mask = mask & ~TAG_DISPLAY; | |
2438 | continue; | |
2439 | } | |
2440 | if (tag == TAG_MOREDISPLAY) | |
2441 | { | |
2442 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2443 | mask = mask & ~TAG_MOREDISPLAY; | |
2444 | continue; | |
2445 | } | |
8a3fe4f8 | 2446 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2447 | break; /* Not a tag we know about. */ |
c906108c SS |
2448 | } |
2449 | return retval; | |
2450 | } | |
2451 | ||
2452 | static int | |
fba45db2 KB |
2453 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2454 | struct gdb_ext_thread_info *info) | |
c906108c | 2455 | { |
d01949b6 | 2456 | struct remote_state *rs = get_remote_state (); |
c906108c | 2457 | int result; |
c906108c | 2458 | |
2e9f7625 DJ |
2459 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2460 | putpkt (rs->buf); | |
6d820c5c | 2461 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2462 | |
2463 | if (rs->buf[0] == '\0') | |
2464 | return 0; | |
2465 | ||
2e9f7625 | 2466 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2467 | threadid, info); |
c906108c SS |
2468 | return result; |
2469 | } | |
2470 | ||
c906108c SS |
2471 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2472 | ||
2473 | static char * | |
fba45db2 KB |
2474 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2475 | threadref *nextthread) | |
c906108c SS |
2476 | { |
2477 | *pkt++ = 'q'; /* info query packet */ | |
2478 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2479 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2480 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2481 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2482 | *pkt = '\0'; | |
2483 | return pkt; | |
2484 | } | |
2485 | ||
2486 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2487 | ||
2488 | static int | |
fba45db2 KB |
2489 | parse_threadlist_response (char *pkt, int result_limit, |
2490 | threadref *original_echo, threadref *resultlist, | |
2491 | int *doneflag) | |
c906108c | 2492 | { |
d01949b6 | 2493 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2494 | char *limit; |
2495 | int count, resultcount, done; | |
2496 | ||
2497 | resultcount = 0; | |
2498 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2499 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2500 | /* done parse past here */ |
c906108c SS |
2501 | pkt = unpack_byte (pkt, &count); /* count field */ |
2502 | pkt = unpack_nibble (pkt, &done); | |
2503 | /* The first threadid is the argument threadid. */ | |
2504 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2505 | while ((count-- > 0) && (pkt < limit)) | |
2506 | { | |
2507 | pkt = unpack_threadid (pkt, resultlist++); | |
2508 | if (resultcount++ >= result_limit) | |
2509 | break; | |
2510 | } | |
2511 | if (doneflag) | |
2512 | *doneflag = done; | |
2513 | return resultcount; | |
2514 | } | |
2515 | ||
2516 | static int | |
fba45db2 KB |
2517 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2518 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2519 | { |
d01949b6 | 2520 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2521 | int result = 1; |
2522 | ||
23860348 | 2523 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2524 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2525 | >= get_remote_packet_size ()) | |
ea9c271d | 2526 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2527 | |
6d820c5c DJ |
2528 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2529 | putpkt (rs->buf); | |
2530 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2531 | |
d8f2712d | 2532 | if (*rs->buf == '\0') |
21bce120 | 2533 | return 0; |
d8f2712d VP |
2534 | else |
2535 | *result_count = | |
0d031856 TT |
2536 | parse_threadlist_response (rs->buf + 2, result_limit, |
2537 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2538 | |
0d031856 | 2539 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2540 | { |
23860348 MS |
2541 | /* FIXME: This is a good reason to drop the packet. */ |
2542 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2543 | /* Possabilities : |
2544 | retransmit immediatly - race conditions | |
2545 | retransmit after timeout - yes | |
2546 | exit | |
2547 | wait for packet, then exit | |
2548 | */ | |
8a3fe4f8 | 2549 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2550 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2551 | } |
2552 | if (*result_count <= 0) | |
2553 | { | |
2554 | if (*done != 1) | |
2555 | { | |
8a3fe4f8 | 2556 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2557 | result = 0; |
2558 | } | |
2559 | return result; /* break; */ | |
2560 | } | |
2561 | if (*result_count > result_limit) | |
2562 | { | |
2563 | *result_count = 0; | |
8a3fe4f8 | 2564 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2565 | return 0; |
2566 | } | |
2567 | return result; | |
2568 | } | |
2569 | ||
23860348 MS |
2570 | /* This is the interface between remote and threads, remotes upper |
2571 | interface. */ | |
c906108c SS |
2572 | |
2573 | /* remote_find_new_threads retrieves the thread list and for each | |
2574 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2575 | adding the thread if it does not already exist. This involves |
c906108c SS |
2576 | getting partial thread lists from the remote target so, polling the |
2577 | quit_flag is required. */ | |
2578 | ||
2579 | ||
c906108c | 2580 | static int |
fba45db2 KB |
2581 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2582 | int looplimit) | |
c906108c | 2583 | { |
0d031856 | 2584 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2585 | int done, i, result_count; |
2586 | int startflag = 1; | |
2587 | int result = 1; | |
2588 | int loopcount = 0; | |
c906108c SS |
2589 | |
2590 | done = 0; | |
2591 | while (!done) | |
2592 | { | |
2593 | if (loopcount++ > looplimit) | |
2594 | { | |
2595 | result = 0; | |
8a3fe4f8 | 2596 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2597 | break; |
2598 | } | |
0d031856 TT |
2599 | if (!remote_get_threadlist (startflag, &rs->nextthread, |
2600 | MAXTHREADLISTRESULTS, | |
2601 | &done, &result_count, rs->resultthreadlist)) | |
c906108c SS |
2602 | { |
2603 | result = 0; | |
2604 | break; | |
2605 | } | |
23860348 | 2606 | /* Clear for later iterations. */ |
c906108c SS |
2607 | startflag = 0; |
2608 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2609 | if (result_count >= 1) | |
0d031856 TT |
2610 | copy_threadref (&rs->nextthread, |
2611 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2612 | i = 0; |
2613 | while (result_count--) | |
0d031856 | 2614 | if (!(result = (*stepfunction) (&rs->resultthreadlist[i++], context))) |
c906108c SS |
2615 | break; |
2616 | } | |
2617 | return result; | |
2618 | } | |
2619 | ||
2620 | static int | |
fba45db2 | 2621 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2622 | { |
79d7f229 PA |
2623 | int pid = ptid_get_pid (inferior_ptid); |
2624 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2625 | |
2626 | if (!in_thread_list (ptid)) | |
2627 | add_thread (ptid); | |
c906108c SS |
2628 | return 1; /* continue iterator */ |
2629 | } | |
2630 | ||
2631 | #define CRAZY_MAX_THREADS 1000 | |
2632 | ||
39f77062 KB |
2633 | static ptid_t |
2634 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2635 | { |
d01949b6 | 2636 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2637 | |
2638 | putpkt ("qC"); | |
6d820c5c | 2639 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2640 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2641 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2642 | else |
2643 | return oldpid; | |
2644 | } | |
2645 | ||
802188a7 RM |
2646 | /* Find new threads for info threads command. |
2647 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2648 | */ |
cce74817 JM |
2649 | |
2650 | static void | |
fba45db2 | 2651 | remote_find_new_threads (void) |
c906108c | 2652 | { |
c5aa993b JM |
2653 | remote_threadlist_iterator (remote_newthread_step, 0, |
2654 | CRAZY_MAX_THREADS); | |
c906108c SS |
2655 | } |
2656 | ||
dc146f7c VP |
2657 | #if defined(HAVE_LIBEXPAT) |
2658 | ||
2659 | typedef struct thread_item | |
2660 | { | |
2661 | ptid_t ptid; | |
2662 | char *extra; | |
2663 | int core; | |
2664 | } thread_item_t; | |
2665 | DEF_VEC_O(thread_item_t); | |
2666 | ||
2667 | struct threads_parsing_context | |
2668 | { | |
2669 | VEC (thread_item_t) *items; | |
2670 | }; | |
2671 | ||
2672 | static void | |
2673 | start_thread (struct gdb_xml_parser *parser, | |
2674 | const struct gdb_xml_element *element, | |
2675 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2676 | { | |
2677 | struct threads_parsing_context *data = user_data; | |
2678 | ||
2679 | struct thread_item item; | |
2680 | char *id; | |
3d2c1d41 | 2681 | struct gdb_xml_value *attr; |
dc146f7c | 2682 | |
3d2c1d41 | 2683 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2684 | item.ptid = read_ptid (id, NULL); |
2685 | ||
3d2c1d41 PA |
2686 | attr = xml_find_attribute (attributes, "core"); |
2687 | if (attr != NULL) | |
2688 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2689 | else |
2690 | item.core = -1; | |
2691 | ||
2692 | item.extra = 0; | |
2693 | ||
2694 | VEC_safe_push (thread_item_t, data->items, &item); | |
2695 | } | |
2696 | ||
2697 | static void | |
2698 | end_thread (struct gdb_xml_parser *parser, | |
2699 | const struct gdb_xml_element *element, | |
2700 | void *user_data, const char *body_text) | |
2701 | { | |
2702 | struct threads_parsing_context *data = user_data; | |
2703 | ||
2704 | if (body_text && *body_text) | |
2ae2a0b7 | 2705 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2706 | } |
2707 | ||
2708 | const struct gdb_xml_attribute thread_attributes[] = { | |
2709 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2710 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2711 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2712 | }; | |
2713 | ||
2714 | const struct gdb_xml_element thread_children[] = { | |
2715 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2716 | }; | |
2717 | ||
2718 | const struct gdb_xml_element threads_children[] = { | |
2719 | { "thread", thread_attributes, thread_children, | |
2720 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2721 | start_thread, end_thread }, | |
2722 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2723 | }; | |
2724 | ||
2725 | const struct gdb_xml_element threads_elements[] = { | |
2726 | { "threads", NULL, threads_children, | |
2727 | GDB_XML_EF_NONE, NULL, NULL }, | |
2728 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2729 | }; | |
2730 | ||
02357a4a PA |
2731 | /* Discard the contents of the constructed thread info context. */ |
2732 | ||
2733 | static void | |
2734 | clear_threads_parsing_context (void *p) | |
2735 | { | |
2736 | struct threads_parsing_context *context = p; | |
2737 | int i; | |
2738 | struct thread_item *item; | |
2739 | ||
2740 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2741 | xfree (item->extra); | |
2742 | ||
2743 | VEC_free (thread_item_t, context->items); | |
2744 | } | |
2745 | ||
dc146f7c VP |
2746 | #endif |
2747 | ||
9d1f7ab2 MS |
2748 | /* |
2749 | * Find all threads for info threads command. | |
2750 | * Uses new thread protocol contributed by Cisco. | |
2751 | * Falls back and attempts to use the older method (above) | |
2752 | * if the target doesn't respond to the new method. | |
2753 | */ | |
2754 | ||
0f71a2f6 | 2755 | static void |
28439f5e | 2756 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2757 | { |
d01949b6 | 2758 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2759 | char *bufp; |
79d7f229 | 2760 | ptid_t new_thread; |
0f71a2f6 | 2761 | |
5d93a237 | 2762 | if (rs->remote_desc == 0) /* paranoia */ |
8a3fe4f8 | 2763 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2764 | |
dc146f7c VP |
2765 | #if defined(HAVE_LIBEXPAT) |
2766 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2767 | { | |
2768 | char *xml = target_read_stralloc (¤t_target, | |
2769 | TARGET_OBJECT_THREADS, NULL); | |
2770 | ||
2771 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2772 | |
dc146f7c VP |
2773 | if (xml && *xml) |
2774 | { | |
dc146f7c | 2775 | struct threads_parsing_context context; |
dc146f7c | 2776 | |
efc0eabd PA |
2777 | context.items = NULL; |
2778 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2779 | |
efc0eabd PA |
2780 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2781 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2782 | { |
2783 | int i; | |
2784 | struct thread_item *item; | |
2785 | ||
3e43a32a MS |
2786 | for (i = 0; |
2787 | VEC_iterate (thread_item_t, context.items, i, item); | |
2788 | ++i) | |
dc146f7c VP |
2789 | { |
2790 | if (!ptid_equal (item->ptid, null_ptid)) | |
2791 | { | |
2792 | struct private_thread_info *info; | |
2793 | /* In non-stop mode, we assume new found threads | |
2794 | are running until proven otherwise with a | |
2795 | stop reply. In all-stop, we can only get | |
2796 | here if all threads are stopped. */ | |
2797 | int running = non_stop ? 1 : 0; | |
2798 | ||
2799 | remote_notice_new_inferior (item->ptid, running); | |
2800 | ||
2801 | info = demand_private_info (item->ptid); | |
2802 | info->core = item->core; | |
2803 | info->extra = item->extra; | |
02357a4a | 2804 | item->extra = NULL; |
dc146f7c | 2805 | } |
dc146f7c VP |
2806 | } |
2807 | } | |
dc146f7c VP |
2808 | } |
2809 | ||
2810 | do_cleanups (back_to); | |
2811 | return; | |
2812 | } | |
2813 | #endif | |
2814 | ||
b80fafe3 | 2815 | if (rs->use_threadinfo_query) |
9d1f7ab2 MS |
2816 | { |
2817 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2818 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2819 | bufp = rs->buf; |
9d1f7ab2 | 2820 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2821 | { |
44d594fd PA |
2822 | struct cleanup *old_chain; |
2823 | char *saved_reply; | |
2824 | ||
2825 | /* remote_notice_new_inferior (in the loop below) may make | |
2826 | new RSP calls, which clobber rs->buf. Work with a | |
2827 | copy. */ | |
2828 | bufp = saved_reply = xstrdup (rs->buf); | |
2829 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2830 | ||
9d1f7ab2 MS |
2831 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2832 | { | |
2833 | do | |
2834 | { | |
82f73884 | 2835 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2836 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2837 | { |
74531fed | 2838 | /* In non-stop mode, we assume new found threads |
1941c569 | 2839 | are running until proven otherwise with a |
74531fed PA |
2840 | stop reply. In all-stop, we can only get |
2841 | here if all threads are stopped. */ | |
1941c569 PA |
2842 | int running = non_stop ? 1 : 0; |
2843 | ||
2844 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2845 | } |
9d1f7ab2 MS |
2846 | } |
2847 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2848 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2849 | putpkt ("qsThreadInfo"); |
6d820c5c | 2850 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2851 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2852 | } |
44d594fd | 2853 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2854 | return; /* done */ |
2855 | } | |
2856 | } | |
2857 | ||
74531fed PA |
2858 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2859 | if (non_stop) | |
2860 | return; | |
2861 | ||
23860348 | 2862 | /* Else fall back to old method based on jmetzler protocol. */ |
b80fafe3 | 2863 | rs->use_threadinfo_query = 0; |
9d1f7ab2 MS |
2864 | remote_find_new_threads (); |
2865 | return; | |
2866 | } | |
2867 | ||
802188a7 | 2868 | /* |
9d1f7ab2 MS |
2869 | * Collect a descriptive string about the given thread. |
2870 | * The target may say anything it wants to about the thread | |
2871 | * (typically info about its blocked / runnable state, name, etc.). | |
2872 | * This string will appear in the info threads display. | |
802188a7 | 2873 | * |
9d1f7ab2 MS |
2874 | * Optional: targets are not required to implement this function. |
2875 | */ | |
2876 | ||
2877 | static char * | |
2878 | remote_threads_extra_info (struct thread_info *tp) | |
2879 | { | |
d01949b6 | 2880 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2881 | int result; |
2882 | int set; | |
2883 | threadref id; | |
2884 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2885 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2886 | int n = 0; /* position in display_buf */ |
2887 | ||
5d93a237 | 2888 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2889 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2890 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2891 | |
60e569b9 PA |
2892 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2893 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2894 | /* This is the main thread which was added by GDB. The remote | |
2895 | server doesn't know about it. */ | |
2896 | return NULL; | |
2897 | ||
dc146f7c VP |
2898 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2899 | { | |
2900 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2901 | |
dc146f7c VP |
2902 | if (info && info->private) |
2903 | return info->private->extra; | |
2904 | else | |
2905 | return NULL; | |
2906 | } | |
2907 | ||
b80fafe3 | 2908 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2909 | { |
82f73884 PA |
2910 | char *b = rs->buf; |
2911 | char *endb = rs->buf + get_remote_packet_size (); | |
2912 | ||
2913 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2914 | b += strlen (b); | |
2915 | write_ptid (b, endb, tp->ptid); | |
2916 | ||
2e9f7625 | 2917 | putpkt (rs->buf); |
6d820c5c | 2918 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2919 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2920 | { |
2e9f7625 DJ |
2921 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2922 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2923 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2924 | return display_buf; |
2925 | } | |
0f71a2f6 | 2926 | } |
9d1f7ab2 MS |
2927 | |
2928 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2929 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2930 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2931 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2932 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2933 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2934 | if (threadinfo.active) | |
0f71a2f6 | 2935 | { |
9d1f7ab2 | 2936 | if (*threadinfo.shortname) |
2bc416ba | 2937 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2938 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2939 | if (*threadinfo.display) |
2bc416ba | 2940 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2941 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2942 | if (*threadinfo.more_display) |
2bc416ba | 2943 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2944 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2945 | |
2946 | if (n > 0) | |
c5aa993b | 2947 | { |
23860348 | 2948 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2949 | if (',' == display_buf[n-1]) |
2950 | display_buf[n-1] = ' '; | |
2951 | return display_buf; | |
c5aa993b | 2952 | } |
0f71a2f6 | 2953 | } |
9d1f7ab2 | 2954 | return NULL; |
0f71a2f6 | 2955 | } |
c906108c | 2956 | \f |
c5aa993b | 2957 | |
0fb4aa4b PA |
2958 | static int |
2959 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2960 | struct static_tracepoint_marker *marker) | |
2961 | { | |
2962 | struct remote_state *rs = get_remote_state (); | |
2963 | char *p = rs->buf; | |
2964 | ||
bba74b36 | 2965 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2966 | p += strlen (p); |
2967 | p += hexnumstr (p, addr); | |
2968 | putpkt (rs->buf); | |
2969 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2970 | p = rs->buf; | |
2971 | ||
2972 | if (*p == 'E') | |
2973 | error (_("Remote failure reply: %s"), p); | |
2974 | ||
2975 | if (*p++ == 'm') | |
2976 | { | |
2977 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2978 | return 1; | |
2979 | } | |
2980 | ||
2981 | return 0; | |
2982 | } | |
2983 | ||
0fb4aa4b PA |
2984 | static VEC(static_tracepoint_marker_p) * |
2985 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2986 | { | |
2987 | struct remote_state *rs = get_remote_state (); | |
2988 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2989 | struct static_tracepoint_marker *marker = NULL; | |
2990 | struct cleanup *old_chain; | |
2991 | char *p; | |
2992 | ||
2993 | /* Ask for a first packet of static tracepoint marker | |
2994 | definition. */ | |
2995 | putpkt ("qTfSTM"); | |
2996 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2997 | p = rs->buf; | |
2998 | if (*p == 'E') | |
2999 | error (_("Remote failure reply: %s"), p); | |
3000 | ||
3001 | old_chain = make_cleanup (free_current_marker, &marker); | |
3002 | ||
3003 | while (*p++ == 'm') | |
3004 | { | |
3005 | if (marker == NULL) | |
3006 | marker = XCNEW (struct static_tracepoint_marker); | |
3007 | ||
3008 | do | |
3009 | { | |
3010 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3011 | ||
3012 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3013 | { | |
3014 | VEC_safe_push (static_tracepoint_marker_p, | |
3015 | markers, marker); | |
3016 | marker = NULL; | |
3017 | } | |
3018 | else | |
3019 | { | |
3020 | release_static_tracepoint_marker (marker); | |
3021 | memset (marker, 0, sizeof (*marker)); | |
3022 | } | |
3023 | } | |
3024 | while (*p++ == ','); /* comma-separated list */ | |
3025 | /* Ask for another packet of static tracepoint definition. */ | |
3026 | putpkt ("qTsSTM"); | |
3027 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3028 | p = rs->buf; | |
3029 | } | |
3030 | ||
3031 | do_cleanups (old_chain); | |
3032 | return markers; | |
3033 | } | |
3034 | ||
3035 | \f | |
10760264 JB |
3036 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3037 | ||
3038 | static ptid_t | |
3039 | remote_get_ada_task_ptid (long lwp, long thread) | |
3040 | { | |
3041 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
3042 | } | |
3043 | \f | |
3044 | ||
24b06219 | 3045 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3046 | |
3047 | static void | |
fba45db2 | 3048 | extended_remote_restart (void) |
c906108c | 3049 | { |
d01949b6 | 3050 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3051 | |
3052 | /* Send the restart command; for reasons I don't understand the | |
3053 | remote side really expects a number after the "R". */ | |
ea9c271d | 3054 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3055 | putpkt (rs->buf); |
c906108c | 3056 | |
ad9a8f3f | 3057 | remote_fileio_reset (); |
c906108c SS |
3058 | } |
3059 | \f | |
3060 | /* Clean up connection to a remote debugger. */ | |
3061 | ||
c906108c | 3062 | static void |
460014f5 | 3063 | remote_close (void) |
c906108c | 3064 | { |
5d93a237 TT |
3065 | struct remote_state *rs = get_remote_state (); |
3066 | ||
3067 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3068 | return; /* already closed */ |
3069 | ||
3070 | /* Make sure we leave stdin registered in the event loop, and we | |
3071 | don't leave the async SIGINT signal handler installed. */ | |
3072 | remote_terminal_ours (); | |
ce5ce7ed | 3073 | |
5d93a237 TT |
3074 | serial_close (rs->remote_desc); |
3075 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3076 | |
3077 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3078 | of all the inferiors and their threads we were controlling. |
3079 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3080 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3081 | inferior_ptid = null_ptid; |
f67fd822 | 3082 | discard_all_inferiors (); |
ce5ce7ed | 3083 | |
f48ff2a7 YQ |
3084 | /* We are closing the remote target, so we should discard |
3085 | everything of this target. */ | |
bcc75809 | 3086 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3087 | |
3088 | if (remote_async_inferior_event_token) | |
3089 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3090 | |
5965e028 | 3091 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3092 | |
3093 | trace_reset_local_state (); | |
c906108c SS |
3094 | } |
3095 | ||
23860348 | 3096 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3097 | |
3098 | static void | |
fba45db2 | 3099 | get_offsets (void) |
c906108c | 3100 | { |
d01949b6 | 3101 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3102 | char *buf; |
085dd6e6 | 3103 | char *ptr; |
31d99776 DJ |
3104 | int lose, num_segments = 0, do_sections, do_segments; |
3105 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3106 | struct section_offsets *offs; |
31d99776 DJ |
3107 | struct symfile_segment_data *data; |
3108 | ||
3109 | if (symfile_objfile == NULL) | |
3110 | return; | |
c906108c SS |
3111 | |
3112 | putpkt ("qOffsets"); | |
6d820c5c | 3113 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3114 | buf = rs->buf; |
c906108c SS |
3115 | |
3116 | if (buf[0] == '\000') | |
3117 | return; /* Return silently. Stub doesn't support | |
23860348 | 3118 | this command. */ |
c906108c SS |
3119 | if (buf[0] == 'E') |
3120 | { | |
8a3fe4f8 | 3121 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3122 | return; |
3123 | } | |
3124 | ||
3125 | /* Pick up each field in turn. This used to be done with scanf, but | |
3126 | scanf will make trouble if CORE_ADDR size doesn't match | |
3127 | conversion directives correctly. The following code will work | |
3128 | with any size of CORE_ADDR. */ | |
3129 | text_addr = data_addr = bss_addr = 0; | |
3130 | ptr = buf; | |
3131 | lose = 0; | |
3132 | ||
3133 | if (strncmp (ptr, "Text=", 5) == 0) | |
3134 | { | |
3135 | ptr += 5; | |
3136 | /* Don't use strtol, could lose on big values. */ | |
3137 | while (*ptr && *ptr != ';') | |
3138 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3139 | |
31d99776 DJ |
3140 | if (strncmp (ptr, ";Data=", 6) == 0) |
3141 | { | |
3142 | ptr += 6; | |
3143 | while (*ptr && *ptr != ';') | |
3144 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3145 | } | |
3146 | else | |
3147 | lose = 1; | |
3148 | ||
3149 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3150 | { | |
3151 | ptr += 5; | |
3152 | while (*ptr && *ptr != ';') | |
3153 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3154 | |
31d99776 DJ |
3155 | if (bss_addr != data_addr) |
3156 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3157 | } | |
3158 | else | |
3159 | lose = 1; | |
3160 | } | |
3161 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3162 | { |
31d99776 DJ |
3163 | ptr += 8; |
3164 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3165 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3166 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3167 | num_segments = 1; | |
3168 | ||
3169 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3170 | { | |
3171 | ptr += 9; | |
3172 | while (*ptr && *ptr != ';') | |
3173 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3174 | num_segments++; | |
3175 | } | |
c906108c SS |
3176 | } |
3177 | else | |
3178 | lose = 1; | |
3179 | ||
3180 | if (lose) | |
8a3fe4f8 | 3181 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3182 | else if (*ptr != '\0') |
3183 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3184 | |
802188a7 | 3185 | offs = ((struct section_offsets *) |
a39a16c4 | 3186 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3187 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3188 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3189 | |
31d99776 DJ |
3190 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3191 | do_segments = (data != NULL); | |
3192 | do_sections = num_segments == 0; | |
c906108c | 3193 | |
28c32713 | 3194 | if (num_segments > 0) |
31d99776 | 3195 | { |
31d99776 DJ |
3196 | segments[0] = text_addr; |
3197 | segments[1] = data_addr; | |
3198 | } | |
28c32713 JB |
3199 | /* If we have two segments, we can still try to relocate everything |
3200 | by assuming that the .text and .data offsets apply to the whole | |
3201 | text and data segments. Convert the offsets given in the packet | |
3202 | to base addresses for symfile_map_offsets_to_segments. */ | |
3203 | else if (data && data->num_segments == 2) | |
3204 | { | |
3205 | segments[0] = data->segment_bases[0] + text_addr; | |
3206 | segments[1] = data->segment_bases[1] + data_addr; | |
3207 | num_segments = 2; | |
3208 | } | |
8d385431 DJ |
3209 | /* If the object file has only one segment, assume that it is text |
3210 | rather than data; main programs with no writable data are rare, | |
3211 | but programs with no code are useless. Of course the code might | |
3212 | have ended up in the data segment... to detect that we would need | |
3213 | the permissions here. */ | |
3214 | else if (data && data->num_segments == 1) | |
3215 | { | |
3216 | segments[0] = data->segment_bases[0] + text_addr; | |
3217 | num_segments = 1; | |
3218 | } | |
28c32713 JB |
3219 | /* There's no way to relocate by segment. */ |
3220 | else | |
3221 | do_segments = 0; | |
31d99776 DJ |
3222 | |
3223 | if (do_segments) | |
3224 | { | |
3225 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3226 | offs, num_segments, segments); | |
3227 | ||
3228 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3229 | error (_("Can not handle qOffsets TextSeg " |
3230 | "response with this symbol file")); | |
31d99776 DJ |
3231 | |
3232 | if (ret > 0) | |
3233 | do_sections = 0; | |
3234 | } | |
c906108c | 3235 | |
9ef895d6 DJ |
3236 | if (data) |
3237 | free_symfile_segment_data (data); | |
31d99776 DJ |
3238 | |
3239 | if (do_sections) | |
3240 | { | |
3241 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3242 | ||
3e43a32a MS |
3243 | /* This is a temporary kludge to force data and bss to use the |
3244 | same offsets because that's what nlmconv does now. The real | |
3245 | solution requires changes to the stub and remote.c that I | |
3246 | don't have time to do right now. */ | |
31d99776 DJ |
3247 | |
3248 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3249 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3250 | } | |
c906108c SS |
3251 | |
3252 | objfile_relocate (symfile_objfile, offs); | |
3253 | } | |
3254 | ||
74531fed PA |
3255 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3256 | threads we know are stopped already. This is used during the | |
3257 | initial remote connection in non-stop mode --- threads that are | |
3258 | reported as already being stopped are left stopped. */ | |
3259 | ||
3260 | static int | |
3261 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3262 | { | |
3263 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3264 | if (peek_stop_reply (thread->ptid)) | |
3265 | set_stop_requested (thread->ptid, 1); | |
3266 | ||
3267 | return 0; | |
3268 | } | |
3269 | ||
9a7071a8 JB |
3270 | /* Send interrupt_sequence to remote target. */ |
3271 | static void | |
eeae04df | 3272 | send_interrupt_sequence (void) |
9a7071a8 | 3273 | { |
5d93a237 TT |
3274 | struct remote_state *rs = get_remote_state (); |
3275 | ||
9a7071a8 | 3276 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3277 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3278 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3279 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3280 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3281 | { | |
5d93a237 | 3282 | serial_send_break (rs->remote_desc); |
c33e31fd | 3283 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3284 | } |
3285 | else | |
3286 | internal_error (__FILE__, __LINE__, | |
3287 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3288 | interrupt_sequence_mode); | |
3289 | } | |
3290 | ||
3405876a PA |
3291 | |
3292 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3293 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3294 | ||
3295 | static ptid_t | |
3296 | stop_reply_extract_thread (char *stop_reply) | |
3297 | { | |
3298 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3299 | { | |
3300 | char *p; | |
3301 | ||
3302 | /* Txx r:val ; r:val (...) */ | |
3303 | p = &stop_reply[3]; | |
3304 | ||
3305 | /* Look for "register" named "thread". */ | |
3306 | while (*p != '\0') | |
3307 | { | |
3308 | char *p1; | |
3309 | ||
3310 | p1 = strchr (p, ':'); | |
3311 | if (p1 == NULL) | |
3312 | return null_ptid; | |
3313 | ||
3314 | if (strncmp (p, "thread", p1 - p) == 0) | |
3315 | return read_ptid (++p1, &p); | |
3316 | ||
3317 | p1 = strchr (p, ';'); | |
3318 | if (p1 == NULL) | |
3319 | return null_ptid; | |
3320 | p1++; | |
3321 | ||
3322 | p = p1; | |
3323 | } | |
3324 | } | |
3325 | ||
3326 | return null_ptid; | |
3327 | } | |
3328 | ||
b7ea362b PA |
3329 | /* Determine the remote side's current thread. If we have a stop |
3330 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3331 | "thread" register we can extract the current thread from. If not, | |
3332 | ask the remote which is the current thread with qC. The former | |
3333 | method avoids a roundtrip. */ | |
3334 | ||
3335 | static ptid_t | |
3336 | get_current_thread (char *wait_status) | |
3337 | { | |
3338 | ptid_t ptid; | |
3339 | ||
3340 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3341 | the target architecture, which we haven't yet fully determined at | |
3342 | this point. */ | |
3343 | if (wait_status != NULL) | |
3344 | ptid = stop_reply_extract_thread (wait_status); | |
3345 | if (ptid_equal (ptid, null_ptid)) | |
3346 | ptid = remote_current_thread (inferior_ptid); | |
3347 | ||
3348 | return ptid; | |
3349 | } | |
3350 | ||
49c62f2e PA |
3351 | /* Query the remote target for which is the current thread/process, |
3352 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3353 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3354 | to return the current thread. |
3355 | ||
3356 | This function is called after handling the '?' or 'vRun' packets, | |
3357 | whose response is a stop reply from which we can also try | |
3358 | extracting the thread. If the target doesn't support the explicit | |
3359 | qC query, we infer the current thread from that stop reply, passed | |
3360 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3361 | |
3362 | static void | |
3405876a | 3363 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3364 | { |
3365 | struct remote_state *rs = get_remote_state (); | |
3366 | int fake_pid_p = 0; | |
3405876a | 3367 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3368 | |
3369 | inferior_ptid = null_ptid; | |
3370 | ||
b7ea362b PA |
3371 | /* Now, if we have thread information, update inferior_ptid. */ |
3372 | ptid = get_current_thread (wait_status); | |
3405876a | 3373 | |
49c62f2e PA |
3374 | if (!ptid_equal (ptid, null_ptid)) |
3375 | { | |
3376 | if (!remote_multi_process_p (rs)) | |
3377 | fake_pid_p = 1; | |
3378 | ||
3379 | inferior_ptid = ptid; | |
3380 | } | |
3381 | else | |
3382 | { | |
3383 | /* Without this, some commands which require an active target | |
3384 | (such as kill) won't work. This variable serves (at least) | |
3385 | double duty as both the pid of the target process (if it has | |
3386 | such), and as a flag indicating that a target is active. */ | |
3387 | inferior_ptid = magic_null_ptid; | |
3388 | fake_pid_p = 1; | |
3389 | } | |
3390 | ||
3391 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3392 | ||
3393 | /* Add the main thread. */ | |
3394 | add_thread_silent (inferior_ptid); | |
3395 | } | |
3396 | ||
9cbc821d | 3397 | static void |
04bd08de | 3398 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3399 | { |
c8d104ad PA |
3400 | struct remote_state *rs = get_remote_state (); |
3401 | struct packet_config *noack_config; | |
2d717e4f | 3402 | char *wait_status = NULL; |
8621d6a9 | 3403 | |
23860348 | 3404 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3405 | QUIT; |
c906108c | 3406 | |
9a7071a8 JB |
3407 | if (interrupt_on_connect) |
3408 | send_interrupt_sequence (); | |
3409 | ||
57e12211 | 3410 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3411 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3412 | |
1e51243a PA |
3413 | /* Signal other parts that we're going through the initial setup, |
3414 | and so things may not be stable yet. */ | |
3415 | rs->starting_up = 1; | |
3416 | ||
c8d104ad PA |
3417 | /* The first packet we send to the target is the optional "supported |
3418 | packets" request. If the target can answer this, it will tell us | |
3419 | which later probes to skip. */ | |
3420 | remote_query_supported (); | |
3421 | ||
d914c394 SS |
3422 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3423 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3424 | remote_set_permissions (); | |
3425 | ||
c8d104ad PA |
3426 | /* Next, we possibly activate noack mode. |
3427 | ||
3428 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3429 | enable noack mode if the stub reported a wish for it with | |
3430 | qSupported. | |
3431 | ||
3432 | If set to TRUE, then enable noack mode even if the stub didn't | |
3433 | report it in qSupported. If the stub doesn't reply OK, the | |
3434 | session ends with an error. | |
3435 | ||
3436 | If FALSE, then don't activate noack mode, regardless of what the | |
3437 | stub claimed should be the default with qSupported. */ | |
3438 | ||
3439 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3440 | ||
3441 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3442 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3443 | && noack_config->support == PACKET_ENABLE)) | |
3444 | { | |
3445 | putpkt ("QStartNoAckMode"); | |
3446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3447 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3448 | rs->noack_mode = 1; | |
3449 | } | |
3450 | ||
04bd08de | 3451 | if (extended_p) |
5fe04517 PA |
3452 | { |
3453 | /* Tell the remote that we are using the extended protocol. */ | |
3454 | putpkt ("!"); | |
3455 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3456 | } | |
3457 | ||
9b224c5e PA |
3458 | /* Let the target know which signals it is allowed to pass down to |
3459 | the program. */ | |
3460 | update_signals_program_target (); | |
3461 | ||
d962ef82 DJ |
3462 | /* Next, if the target can specify a description, read it. We do |
3463 | this before anything involving memory or registers. */ | |
3464 | target_find_description (); | |
3465 | ||
6c95b8df PA |
3466 | /* Next, now that we know something about the target, update the |
3467 | address spaces in the program spaces. */ | |
3468 | update_address_spaces (); | |
3469 | ||
50c71eaf PA |
3470 | /* On OSs where the list of libraries is global to all |
3471 | processes, we fetch them early. */ | |
f5656ead | 3472 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3473 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3474 | |
74531fed PA |
3475 | if (non_stop) |
3476 | { | |
3477 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3478 | error (_("Non-stop mode requested, but remote " |
3479 | "does not support non-stop")); | |
74531fed PA |
3480 | |
3481 | putpkt ("QNonStop:1"); | |
3482 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3483 | ||
3484 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3485 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3486 | |
3487 | /* Find about threads and processes the stub is already | |
3488 | controlling. We default to adding them in the running state. | |
3489 | The '?' query below will then tell us about which threads are | |
3490 | stopped. */ | |
04bd08de | 3491 | remote_threads_info (target); |
74531fed PA |
3492 | } |
3493 | else if (rs->non_stop_aware) | |
3494 | { | |
3495 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3496 | Request it explicitly. */ |
74531fed PA |
3497 | putpkt ("QNonStop:0"); |
3498 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3499 | ||
3500 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3501 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3502 | } |
3503 | ||
a0743c90 YQ |
3504 | /* Upload TSVs regardless of whether the target is running or not. The |
3505 | remote stub, such as GDBserver, may have some predefined or builtin | |
3506 | TSVs, even if the target is not running. */ | |
3507 | if (remote_get_trace_status (current_trace_status ()) != -1) | |
3508 | { | |
3509 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3510 | ||
3511 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3512 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3513 | } | |
3514 | ||
2d717e4f DJ |
3515 | /* Check whether the target is running now. */ |
3516 | putpkt ("?"); | |
3517 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3518 | ||
74531fed | 3519 | if (!non_stop) |
2d717e4f | 3520 | { |
e714e1bf UW |
3521 | ptid_t ptid; |
3522 | int fake_pid_p = 0; | |
3523 | struct inferior *inf; | |
3524 | ||
74531fed | 3525 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3526 | { |
04bd08de | 3527 | if (!extended_p) |
74531fed | 3528 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3529 | |
3530 | /* We're connected, but not running. Drop out before we | |
3531 | call start_remote. */ | |
e278ad5b | 3532 | rs->starting_up = 0; |
c35b1492 | 3533 | return; |
2d717e4f DJ |
3534 | } |
3535 | else | |
74531fed | 3536 | { |
74531fed PA |
3537 | /* Save the reply for later. */ |
3538 | wait_status = alloca (strlen (rs->buf) + 1); | |
3539 | strcpy (wait_status, rs->buf); | |
3540 | } | |
3541 | ||
b7ea362b PA |
3542 | /* Fetch thread list. */ |
3543 | target_find_new_threads (); | |
3544 | ||
74531fed PA |
3545 | /* Let the stub know that we want it to return the thread. */ |
3546 | set_continue_thread (minus_one_ptid); | |
3547 | ||
b7ea362b PA |
3548 | if (thread_count () == 0) |
3549 | { | |
3550 | /* Target has no concept of threads at all. GDB treats | |
3551 | non-threaded target as single-threaded; add a main | |
3552 | thread. */ | |
3553 | add_current_inferior_and_thread (wait_status); | |
3554 | } | |
3555 | else | |
3556 | { | |
3557 | /* We have thread information; select the thread the target | |
3558 | says should be current. If we're reconnecting to a | |
3559 | multi-threaded program, this will ideally be the thread | |
3560 | that last reported an event before GDB disconnected. */ | |
3561 | inferior_ptid = get_current_thread (wait_status); | |
3562 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3563 | { | |
3564 | /* Odd... The target was able to list threads, but not | |
3565 | tell us which thread was current (no "thread" | |
3566 | register in T stop reply?). Just pick the first | |
3567 | thread in the thread list then. */ | |
3568 | inferior_ptid = thread_list->ptid; | |
3569 | } | |
3570 | } | |
74531fed | 3571 | |
6e586cc5 YQ |
3572 | /* init_wait_for_inferior should be called before get_offsets in order |
3573 | to manage `inserted' flag in bp loc in a correct state. | |
3574 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3575 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3576 | start_remote, set `inserted' flag to 1. In the initialization of | |
3577 | inferior, breakpoint_init_inferior should be called first, and then | |
3578 | breakpoint_re_set can be called. If this order is broken, state of | |
3579 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3580 | manipulation. */ | |
3581 | init_wait_for_inferior (); | |
3582 | ||
74531fed PA |
3583 | get_offsets (); /* Get text, data & bss offsets. */ |
3584 | ||
d962ef82 DJ |
3585 | /* If we could not find a description using qXfer, and we know |
3586 | how to do it some other way, try again. This is not | |
3587 | supported for non-stop; it could be, but it is tricky if | |
3588 | there are no stopped threads when we connect. */ | |
04bd08de | 3589 | if (remote_read_description_p (target) |
f5656ead | 3590 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3591 | { |
3592 | target_clear_description (); | |
3593 | target_find_description (); | |
3594 | } | |
3595 | ||
74531fed PA |
3596 | /* Use the previously fetched status. */ |
3597 | gdb_assert (wait_status != NULL); | |
3598 | strcpy (rs->buf, wait_status); | |
3599 | rs->cached_wait_status = 1; | |
3600 | ||
3601 | immediate_quit--; | |
04bd08de | 3602 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3603 | } |
3604 | else | |
3605 | { | |
68c97600 PA |
3606 | /* Clear WFI global state. Do this before finding about new |
3607 | threads and inferiors, and setting the current inferior. | |
3608 | Otherwise we would clear the proceed status of the current | |
3609 | inferior when we want its stop_soon state to be preserved | |
3610 | (see notice_new_inferior). */ | |
3611 | init_wait_for_inferior (); | |
3612 | ||
74531fed PA |
3613 | /* In non-stop, we will either get an "OK", meaning that there |
3614 | are no stopped threads at this time; or, a regular stop | |
3615 | reply. In the latter case, there may be more than one thread | |
3616 | stopped --- we pull them all out using the vStopped | |
3617 | mechanism. */ | |
3618 | if (strcmp (rs->buf, "OK") != 0) | |
3619 | { | |
722247f1 | 3620 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3621 | |
722247f1 YQ |
3622 | /* remote_notif_get_pending_replies acks this one, and gets |
3623 | the rest out. */ | |
f48ff2a7 | 3624 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3625 | = remote_notif_parse (notif, rs->buf); |
3626 | remote_notif_get_pending_events (notif); | |
c906108c | 3627 | |
74531fed PA |
3628 | /* Make sure that threads that were stopped remain |
3629 | stopped. */ | |
3630 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3631 | } | |
2d717e4f | 3632 | |
74531fed PA |
3633 | if (target_can_async_p ()) |
3634 | target_async (inferior_event_handler, 0); | |
c906108c | 3635 | |
74531fed PA |
3636 | if (thread_count () == 0) |
3637 | { | |
04bd08de | 3638 | if (!extended_p) |
74531fed | 3639 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3640 | |
c35b1492 PA |
3641 | /* We're connected, but not running. Drop out before we |
3642 | call start_remote. */ | |
e278ad5b | 3643 | rs->starting_up = 0; |
c35b1492 PA |
3644 | return; |
3645 | } | |
74531fed PA |
3646 | |
3647 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3648 | |
74531fed PA |
3649 | /* Force the stub to choose a thread. */ |
3650 | set_general_thread (null_ptid); | |
c906108c | 3651 | |
74531fed PA |
3652 | /* Query it. */ |
3653 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3654 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3655 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3656 | |
74531fed PA |
3657 | get_offsets (); /* Get text, data & bss offsets. */ |
3658 | ||
3659 | /* In non-stop mode, any cached wait status will be stored in | |
3660 | the stop reply queue. */ | |
3661 | gdb_assert (wait_status == NULL); | |
f0223081 | 3662 | |
2455069d UW |
3663 | /* Report all signals during attach/startup. */ |
3664 | remote_pass_signals (0, NULL); | |
74531fed | 3665 | } |
c8d104ad | 3666 | |
c8d104ad PA |
3667 | /* If we connected to a live target, do some additional setup. */ |
3668 | if (target_has_execution) | |
3669 | { | |
3670 | if (exec_bfd) /* No use without an exec file. */ | |
36d25514 | 3671 | remote_check_symbols (); |
c8d104ad | 3672 | } |
50c71eaf | 3673 | |
d5551862 SS |
3674 | /* Possibly the target has been engaged in a trace run started |
3675 | previously; find out where things are at. */ | |
26afc0d7 | 3676 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3677 | { |
00bf0b85 | 3678 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3679 | |
00bf0b85 SS |
3680 | if (current_trace_status ()->running) |
3681 | printf_filtered (_("Trace is already running on the target.\n")); | |
3682 | ||
00bf0b85 SS |
3683 | remote_upload_tracepoints (&uploaded_tps); |
3684 | ||
3685 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3686 | } |
3687 | ||
1e51243a PA |
3688 | /* The thread and inferior lists are now synchronized with the |
3689 | target, our symbols have been relocated, and we're merged the | |
3690 | target's tracepoints with ours. We're done with basic start | |
3691 | up. */ | |
3692 | rs->starting_up = 0; | |
3693 | ||
2567c7d9 | 3694 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3695 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3696 | && breakpoints_always_inserted_mode ()) |
3697 | insert_breakpoints (); | |
c906108c SS |
3698 | } |
3699 | ||
3700 | /* Open a connection to a remote debugger. | |
3701 | NAME is the filename used for communication. */ | |
3702 | ||
3703 | static void | |
fba45db2 | 3704 | remote_open (char *name, int from_tty) |
c906108c | 3705 | { |
75c99385 | 3706 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3707 | } |
3708 | ||
c906108c SS |
3709 | /* Open a connection to a remote debugger using the extended |
3710 | remote gdb protocol. NAME is the filename used for communication. */ | |
3711 | ||
3712 | static void | |
fba45db2 | 3713 | extended_remote_open (char *name, int from_tty) |
c906108c | 3714 | { |
75c99385 | 3715 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3716 | } |
3717 | ||
c906108c SS |
3718 | /* Generic code for opening a connection to a remote target. */ |
3719 | ||
d471ea57 AC |
3720 | static void |
3721 | init_all_packet_configs (void) | |
3722 | { | |
3723 | int i; | |
a744cf53 | 3724 | |
444abaca DJ |
3725 | for (i = 0; i < PACKET_MAX; i++) |
3726 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3727 | } |
3728 | ||
23860348 | 3729 | /* Symbol look-up. */ |
dc8acb97 MS |
3730 | |
3731 | static void | |
36d25514 | 3732 | remote_check_symbols (void) |
dc8acb97 | 3733 | { |
d01949b6 | 3734 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3735 | char *msg, *reply, *tmp; |
3736 | struct minimal_symbol *sym; | |
3737 | int end; | |
3738 | ||
63154eca PA |
3739 | /* The remote side has no concept of inferiors that aren't running |
3740 | yet, it only knows about running processes. If we're connected | |
3741 | but our current inferior is not running, we should not invite the | |
3742 | remote target to request symbol lookups related to its | |
3743 | (unrelated) current process. */ | |
3744 | if (!target_has_execution) | |
3745 | return; | |
3746 | ||
444abaca | 3747 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3748 | return; |
3749 | ||
63154eca PA |
3750 | /* Make sure the remote is pointing at the right process. Note |
3751 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3752 | set_general_process (); |
3753 | ||
6d820c5c DJ |
3754 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3755 | because we need both at the same time. */ | |
ea9c271d | 3756 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3757 | |
23860348 | 3758 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3759 | |
3760 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3761 | getpkt (&rs->buf, &rs->buf_size, 0); |
3762 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3763 | reply = rs->buf; |
dc8acb97 MS |
3764 | |
3765 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3766 | { | |
3767 | tmp = &reply[8]; | |
cfd77fa1 | 3768 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3769 | msg[end] = '\0'; |
3770 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3771 | if (sym == NULL) | |
ea9c271d | 3772 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3773 | else |
2bbe3cc1 | 3774 | { |
f5656ead | 3775 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
2bbe3cc1 DJ |
3776 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3777 | ||
3778 | /* If this is a function address, return the start of code | |
3779 | instead of any data function descriptor. */ | |
f5656ead | 3780 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3781 | sym_addr, |
3782 | ¤t_target); | |
3783 | ||
3784 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3785 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3786 | } |
3787 | ||
dc8acb97 | 3788 | putpkt (msg); |
6d820c5c | 3789 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3790 | reply = rs->buf; |
dc8acb97 MS |
3791 | } |
3792 | } | |
3793 | ||
9db8d71f DJ |
3794 | static struct serial * |
3795 | remote_serial_open (char *name) | |
3796 | { | |
3797 | static int udp_warning = 0; | |
3798 | ||
3799 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3800 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3801 | serial connection is reliable and not the serial connection promising | |
3802 | to be. */ | |
3803 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3804 | { | |
3e43a32a MS |
3805 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3806 | "Some events may be lost, rendering further debugging " | |
3807 | "impossible.")); | |
9db8d71f DJ |
3808 | udp_warning = 1; |
3809 | } | |
3810 | ||
3811 | return serial_open (name); | |
3812 | } | |
3813 | ||
d914c394 SS |
3814 | /* Inform the target of our permission settings. The permission flags |
3815 | work without this, but if the target knows the settings, it can do | |
3816 | a couple things. First, it can add its own check, to catch cases | |
3817 | that somehow manage to get by the permissions checks in target | |
3818 | methods. Second, if the target is wired to disallow particular | |
3819 | settings (for instance, a system in the field that is not set up to | |
3820 | be able to stop at a breakpoint), it can object to any unavailable | |
3821 | permissions. */ | |
3822 | ||
3823 | void | |
3824 | remote_set_permissions (void) | |
3825 | { | |
3826 | struct remote_state *rs = get_remote_state (); | |
3827 | ||
bba74b36 YQ |
3828 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3829 | "WriteReg:%x;WriteMem:%x;" | |
3830 | "InsertBreak:%x;InsertTrace:%x;" | |
3831 | "InsertFastTrace:%x;Stop:%x", | |
3832 | may_write_registers, may_write_memory, | |
3833 | may_insert_breakpoints, may_insert_tracepoints, | |
3834 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3835 | putpkt (rs->buf); |
3836 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3837 | ||
3838 | /* If the target didn't like the packet, warn the user. Do not try | |
3839 | to undo the user's settings, that would just be maddening. */ | |
3840 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3841 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3842 | } |
3843 | ||
be2a5f71 DJ |
3844 | /* This type describes each known response to the qSupported |
3845 | packet. */ | |
3846 | struct protocol_feature | |
3847 | { | |
3848 | /* The name of this protocol feature. */ | |
3849 | const char *name; | |
3850 | ||
3851 | /* The default for this protocol feature. */ | |
3852 | enum packet_support default_support; | |
3853 | ||
3854 | /* The function to call when this feature is reported, or after | |
3855 | qSupported processing if the feature is not supported. | |
3856 | The first argument points to this structure. The second | |
3857 | argument indicates whether the packet requested support be | |
3858 | enabled, disabled, or probed (or the default, if this function | |
3859 | is being called at the end of processing and this feature was | |
3860 | not reported). The third argument may be NULL; if not NULL, it | |
3861 | is a NUL-terminated string taken from the packet following | |
3862 | this feature's name and an equals sign. */ | |
3863 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3864 | const char *); | |
3865 | ||
3866 | /* The corresponding packet for this feature. Only used if | |
3867 | FUNC is remote_supported_packet. */ | |
3868 | int packet; | |
3869 | }; | |
3870 | ||
be2a5f71 DJ |
3871 | static void |
3872 | remote_supported_packet (const struct protocol_feature *feature, | |
3873 | enum packet_support support, | |
3874 | const char *argument) | |
3875 | { | |
3876 | if (argument) | |
3877 | { | |
3878 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3879 | " \"%s\"."), feature->name); | |
3880 | return; | |
3881 | } | |
3882 | ||
3883 | if (remote_protocol_packets[feature->packet].support | |
3884 | == PACKET_SUPPORT_UNKNOWN) | |
3885 | remote_protocol_packets[feature->packet].support = support; | |
3886 | } | |
be2a5f71 DJ |
3887 | |
3888 | static void | |
3889 | remote_packet_size (const struct protocol_feature *feature, | |
3890 | enum packet_support support, const char *value) | |
3891 | { | |
3892 | struct remote_state *rs = get_remote_state (); | |
3893 | ||
3894 | int packet_size; | |
3895 | char *value_end; | |
3896 | ||
3897 | if (support != PACKET_ENABLE) | |
3898 | return; | |
3899 | ||
3900 | if (value == NULL || *value == '\0') | |
3901 | { | |
3902 | warning (_("Remote target reported \"%s\" without a size."), | |
3903 | feature->name); | |
3904 | return; | |
3905 | } | |
3906 | ||
3907 | errno = 0; | |
3908 | packet_size = strtol (value, &value_end, 16); | |
3909 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3910 | { | |
3911 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3912 | feature->name, value); | |
3913 | return; | |
3914 | } | |
3915 | ||
3916 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3917 | { | |
3918 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3919 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3920 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3921 | } | |
3922 | ||
3923 | /* Record the new maximum packet size. */ | |
3924 | rs->explicit_packet_size = packet_size; | |
3925 | } | |
3926 | ||
82f73884 PA |
3927 | static void |
3928 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3929 | enum packet_support support, const char *value) | |
3930 | { | |
3931 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3932 | |
82f73884 PA |
3933 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3934 | } | |
3935 | ||
74531fed PA |
3936 | static void |
3937 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3938 | enum packet_support support, const char *value) | |
3939 | { | |
3940 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3941 | |
74531fed PA |
3942 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3943 | } | |
3944 | ||
782b2b07 SS |
3945 | static void |
3946 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3947 | enum packet_support support, | |
3948 | const char *value) | |
3949 | { | |
3950 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3951 | |
782b2b07 SS |
3952 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3953 | } | |
3954 | ||
3788aec7 LM |
3955 | static void |
3956 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3957 | enum packet_support support, | |
3958 | const char *value) | |
3959 | { | |
3960 | struct remote_state *rs = get_remote_state (); | |
3961 | ||
3962 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3963 | } | |
3964 | ||
d3ce09f5 SS |
3965 | static void |
3966 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3967 | enum packet_support support, | |
3968 | const char *value) | |
3969 | { | |
3970 | struct remote_state *rs = get_remote_state (); | |
3971 | ||
3972 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3973 | } | |
3974 | ||
7a697b8d SS |
3975 | static void |
3976 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3977 | enum packet_support support, | |
3978 | const char *value) | |
3979 | { | |
3980 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3981 | |
7a697b8d SS |
3982 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3983 | } | |
3984 | ||
0fb4aa4b PA |
3985 | static void |
3986 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3987 | enum packet_support support, | |
3988 | const char *value) | |
3989 | { | |
3990 | struct remote_state *rs = get_remote_state (); | |
3991 | ||
3992 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3993 | } | |
3994 | ||
1e4d1764 YQ |
3995 | static void |
3996 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3997 | enum packet_support support, | |
3998 | const char *value) | |
3999 | { | |
4000 | struct remote_state *rs = get_remote_state (); | |
4001 | ||
4002 | rs->install_in_trace = (support == PACKET_ENABLE); | |
4003 | } | |
4004 | ||
d5551862 SS |
4005 | static void |
4006 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
4007 | enum packet_support support, | |
4008 | const char *value) | |
4009 | { | |
4010 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 4011 | |
d5551862 SS |
4012 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
4013 | } | |
4014 | ||
d248b706 KY |
4015 | static void |
4016 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
4017 | enum packet_support support, | |
4018 | const char *value) | |
4019 | { | |
4020 | struct remote_state *rs = get_remote_state (); | |
4021 | ||
4022 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
4023 | } | |
4024 | ||
3065dfb6 SS |
4025 | static void |
4026 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
4027 | enum packet_support support, | |
4028 | const char *value) | |
4029 | { | |
4030 | struct remote_state *rs = get_remote_state (); | |
4031 | ||
4032 | rs->string_tracing = (support == PACKET_ENABLE); | |
4033 | } | |
4034 | ||
ced63ec0 GB |
4035 | static void |
4036 | remote_augmented_libraries_svr4_read_feature | |
4037 | (const struct protocol_feature *feature, | |
4038 | enum packet_support support, const char *value) | |
4039 | { | |
4040 | struct remote_state *rs = get_remote_state (); | |
4041 | ||
4042 | rs->augmented_libraries_svr4_read = (support == PACKET_ENABLE); | |
4043 | } | |
4044 | ||
dc473cfb | 4045 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4046 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4047 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4048 | PACKET_qXfer_auxv }, |
23181151 DJ |
4049 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4050 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4051 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4052 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4053 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4054 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 GB |
4055 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4056 | remote_augmented_libraries_svr4_read_feature, -1 }, | |
fd79ecee | 4057 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4058 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4059 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4060 | PACKET_qXfer_spu_read }, | |
4061 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4062 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4063 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4064 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4065 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4066 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4067 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4068 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4069 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4070 | PACKET_QPassSignals }, | |
9b224c5e PA |
4071 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4072 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4073 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4074 | PACKET_QStartNoAckMode }, | |
82f73884 | 4075 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 4076 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
4077 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4078 | PACKET_qXfer_siginfo_read }, | |
4079 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4080 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
4081 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
4082 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
4083 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
4084 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
4085 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
4086 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
4087 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
4088 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
4089 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
4090 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
4091 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
4092 | PACKET_InstallInTrace}, | |
d5551862 SS |
4093 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
4094 | -1 }, | |
40ab02ce MS |
4095 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4096 | PACKET_bc }, | |
4097 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4098 | PACKET_bs }, | |
409873ef SS |
4099 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4100 | PACKET_TracepointSource }, | |
d914c394 SS |
4101 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4102 | PACKET_QAllow }, | |
d248b706 KY |
4103 | { "EnableDisableTracepoints", PACKET_DISABLE, |
4104 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
4105 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4106 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4107 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4108 | PACKET_qXfer_uib }, | |
03583c20 UW |
4109 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4110 | PACKET_QDisableRandomization }, | |
d1feda86 | 4111 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4112 | { "QTBuffer:size", PACKET_DISABLE, |
4113 | remote_supported_packet, PACKET_QTBuffer_size}, | |
3065dfb6 SS |
4114 | { "tracenz", PACKET_DISABLE, |
4115 | remote_string_tracing_feature, -1 }, | |
9accd112 MM |
4116 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4117 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
4118 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
4119 | PACKET_qXfer_btrace } | |
be2a5f71 DJ |
4120 | }; |
4121 | ||
c8d5aac9 L |
4122 | static char *remote_support_xml; |
4123 | ||
4124 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4125 | ||
4126 | void | |
6e39997a | 4127 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4128 | { |
4129 | #if defined(HAVE_LIBEXPAT) | |
4130 | if (remote_support_xml == NULL) | |
c4f7c687 | 4131 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4132 | else |
4133 | { | |
4134 | char *copy = xstrdup (remote_support_xml + 13); | |
4135 | char *p = strtok (copy, ","); | |
4136 | ||
4137 | do | |
4138 | { | |
4139 | if (strcmp (p, xml) == 0) | |
4140 | { | |
4141 | /* already there */ | |
4142 | xfree (copy); | |
4143 | return; | |
4144 | } | |
4145 | } | |
4146 | while ((p = strtok (NULL, ",")) != NULL); | |
4147 | xfree (copy); | |
4148 | ||
94b0dee1 PA |
4149 | remote_support_xml = reconcat (remote_support_xml, |
4150 | remote_support_xml, ",", xml, | |
4151 | (char *) NULL); | |
c8d5aac9 L |
4152 | } |
4153 | #endif | |
4154 | } | |
4155 | ||
4156 | static char * | |
4157 | remote_query_supported_append (char *msg, const char *append) | |
4158 | { | |
4159 | if (msg) | |
94b0dee1 | 4160 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4161 | else |
4162 | return xstrdup (append); | |
4163 | } | |
4164 | ||
be2a5f71 DJ |
4165 | static void |
4166 | remote_query_supported (void) | |
4167 | { | |
4168 | struct remote_state *rs = get_remote_state (); | |
4169 | char *next; | |
4170 | int i; | |
4171 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4172 | ||
4173 | /* The packet support flags are handled differently for this packet | |
4174 | than for most others. We treat an error, a disabled packet, and | |
4175 | an empty response identically: any features which must be reported | |
4176 | to be used will be automatically disabled. An empty buffer | |
4177 | accomplishes this, since that is also the representation for a list | |
4178 | containing no features. */ | |
4179 | ||
4180 | rs->buf[0] = 0; | |
4181 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4182 | { | |
c8d5aac9 | 4183 | char *q = NULL; |
94b0dee1 | 4184 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4185 | |
901f9912 | 4186 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4187 | |
4188 | if (remote_support_xml) | |
4189 | q = remote_query_supported_append (q, remote_support_xml); | |
4190 | ||
dde08ee1 PA |
4191 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4192 | ||
4193 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4194 | putpkt (q); | |
82f73884 | 4195 | |
94b0dee1 PA |
4196 | do_cleanups (old_chain); |
4197 | ||
be2a5f71 DJ |
4198 | getpkt (&rs->buf, &rs->buf_size, 0); |
4199 | ||
4200 | /* If an error occured, warn, but do not return - just reset the | |
4201 | buffer to empty and go on to disable features. */ | |
4202 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4203 | == PACKET_ERROR) | |
4204 | { | |
4205 | warning (_("Remote failure reply: %s"), rs->buf); | |
4206 | rs->buf[0] = 0; | |
4207 | } | |
4208 | } | |
4209 | ||
4210 | memset (seen, 0, sizeof (seen)); | |
4211 | ||
4212 | next = rs->buf; | |
4213 | while (*next) | |
4214 | { | |
4215 | enum packet_support is_supported; | |
4216 | char *p, *end, *name_end, *value; | |
4217 | ||
4218 | /* First separate out this item from the rest of the packet. If | |
4219 | there's another item after this, we overwrite the separator | |
4220 | (terminated strings are much easier to work with). */ | |
4221 | p = next; | |
4222 | end = strchr (p, ';'); | |
4223 | if (end == NULL) | |
4224 | { | |
4225 | end = p + strlen (p); | |
4226 | next = end; | |
4227 | } | |
4228 | else | |
4229 | { | |
89be2091 DJ |
4230 | *end = '\0'; |
4231 | next = end + 1; | |
4232 | ||
be2a5f71 DJ |
4233 | if (end == p) |
4234 | { | |
4235 | warning (_("empty item in \"qSupported\" response")); | |
4236 | continue; | |
4237 | } | |
be2a5f71 DJ |
4238 | } |
4239 | ||
4240 | name_end = strchr (p, '='); | |
4241 | if (name_end) | |
4242 | { | |
4243 | /* This is a name=value entry. */ | |
4244 | is_supported = PACKET_ENABLE; | |
4245 | value = name_end + 1; | |
4246 | *name_end = '\0'; | |
4247 | } | |
4248 | else | |
4249 | { | |
4250 | value = NULL; | |
4251 | switch (end[-1]) | |
4252 | { | |
4253 | case '+': | |
4254 | is_supported = PACKET_ENABLE; | |
4255 | break; | |
4256 | ||
4257 | case '-': | |
4258 | is_supported = PACKET_DISABLE; | |
4259 | break; | |
4260 | ||
4261 | case '?': | |
4262 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4263 | break; | |
4264 | ||
4265 | default: | |
3e43a32a MS |
4266 | warning (_("unrecognized item \"%s\" " |
4267 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4268 | continue; |
4269 | } | |
4270 | end[-1] = '\0'; | |
4271 | } | |
4272 | ||
4273 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4274 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4275 | { | |
4276 | const struct protocol_feature *feature; | |
4277 | ||
4278 | seen[i] = 1; | |
4279 | feature = &remote_protocol_features[i]; | |
4280 | feature->func (feature, is_supported, value); | |
4281 | break; | |
4282 | } | |
4283 | } | |
4284 | ||
4285 | /* If we increased the packet size, make sure to increase the global | |
4286 | buffer size also. We delay this until after parsing the entire | |
4287 | qSupported packet, because this is the same buffer we were | |
4288 | parsing. */ | |
4289 | if (rs->buf_size < rs->explicit_packet_size) | |
4290 | { | |
4291 | rs->buf_size = rs->explicit_packet_size; | |
4292 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4293 | } | |
4294 | ||
4295 | /* Handle the defaults for unmentioned features. */ | |
4296 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4297 | if (!seen[i]) | |
4298 | { | |
4299 | const struct protocol_feature *feature; | |
4300 | ||
4301 | feature = &remote_protocol_features[i]; | |
4302 | feature->func (feature, feature->default_support, NULL); | |
4303 | } | |
4304 | } | |
4305 | ||
78a095c3 JK |
4306 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4307 | on it so remove them first. */ | |
4308 | ||
4309 | static void | |
4310 | remote_unpush_target (void) | |
4311 | { | |
4312 | pop_all_targets_above (process_stratum - 1); | |
4313 | } | |
be2a5f71 | 4314 | |
c906108c | 4315 | static void |
3e43a32a MS |
4316 | remote_open_1 (char *name, int from_tty, |
4317 | struct target_ops *target, int extended_p) | |
c906108c | 4318 | { |
d01949b6 | 4319 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4320 | |
c906108c | 4321 | if (name == 0) |
8a3fe4f8 | 4322 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4323 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4324 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4325 | |
23860348 | 4326 | /* See FIXME above. */ |
c6ebd6cf | 4327 | if (!target_async_permitted) |
92d1e331 | 4328 | wait_forever_enabled_p = 1; |
6426a772 | 4329 | |
2d717e4f | 4330 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4331 | Ask this question first, before target_preopen has a chance to kill |
4332 | anything. */ | |
5d93a237 | 4333 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4334 | { |
78a095c3 JK |
4335 | if (from_tty |
4336 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4337 | error (_("Still connected.")); |
4338 | } | |
4339 | ||
78a095c3 | 4340 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4341 | target_preopen (from_tty); |
4342 | ||
89be2091 | 4343 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4344 | xfree (rs->last_pass_packet); |
4345 | rs->last_pass_packet = NULL; | |
89be2091 | 4346 | |
9b224c5e PA |
4347 | /* Make sure we send the program signals list the next time we |
4348 | resume. */ | |
5e4a05c4 TT |
4349 | xfree (rs->last_program_signals_packet); |
4350 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4351 | |
ad9a8f3f | 4352 | remote_fileio_reset (); |
1dd41f16 NS |
4353 | reopen_exec_file (); |
4354 | reread_symbols (); | |
4355 | ||
5d93a237 TT |
4356 | rs->remote_desc = remote_serial_open (name); |
4357 | if (!rs->remote_desc) | |
c906108c SS |
4358 | perror_with_name (name); |
4359 | ||
4360 | if (baud_rate != -1) | |
4361 | { | |
5d93a237 | 4362 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4363 | { |
9b74d5d3 KB |
4364 | /* The requested speed could not be set. Error out to |
4365 | top level after closing remote_desc. Take care to | |
4366 | set remote_desc to NULL to avoid closing remote_desc | |
4367 | more than once. */ | |
5d93a237 TT |
4368 | serial_close (rs->remote_desc); |
4369 | rs->remote_desc = NULL; | |
c906108c SS |
4370 | perror_with_name (name); |
4371 | } | |
4372 | } | |
4373 | ||
5d93a237 | 4374 | serial_raw (rs->remote_desc); |
c906108c SS |
4375 | |
4376 | /* If there is something sitting in the buffer we might take it as a | |
4377 | response to a command, which would be bad. */ | |
5d93a237 | 4378 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4379 | |
4380 | if (from_tty) | |
4381 | { | |
4382 | puts_filtered ("Remote debugging using "); | |
4383 | puts_filtered (name); | |
4384 | puts_filtered ("\n"); | |
4385 | } | |
23860348 | 4386 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4387 | |
74531fed PA |
4388 | /* Register extra event sources in the event loop. */ |
4389 | remote_async_inferior_event_token | |
4390 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4391 | NULL); | |
5965e028 | 4392 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4393 | |
be2a5f71 DJ |
4394 | /* Reset the target state; these things will be queried either by |
4395 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4396 | init_all_packet_configs (); |
74531fed | 4397 | rs->cached_wait_status = 0; |
be2a5f71 | 4398 | rs->explicit_packet_size = 0; |
a6f3e723 | 4399 | rs->noack_mode = 0; |
82f73884 PA |
4400 | rs->multi_process_aware = 0; |
4401 | rs->extended = extended_p; | |
74531fed | 4402 | rs->non_stop_aware = 0; |
e24a49d8 | 4403 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4404 | rs->ctrlc_pending_p = 0; |
802188a7 | 4405 | |
47f8a51d TT |
4406 | rs->general_thread = not_sent_ptid; |
4407 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4408 | rs->remote_traceframe_number = -1; |
c906108c | 4409 | |
9d1f7ab2 | 4410 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4411 | rs->use_threadinfo_query = 1; |
4412 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4413 | |
c6ebd6cf | 4414 | if (target_async_permitted) |
92d1e331 | 4415 | { |
23860348 | 4416 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4417 | remote_async_terminal_ours_p = 1; |
4418 | ||
4419 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4420 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4421 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4422 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4423 | around this. Eventually a mechanism that allows |
92d1e331 | 4424 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4425 | implemented. */ |
92d1e331 DJ |
4426 | wait_forever_enabled_p = 0; |
4427 | } | |
4428 | ||
23860348 | 4429 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4430 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4431 | |
74531fed PA |
4432 | /* Start afresh. */ |
4433 | init_thread_list (); | |
4434 | ||
36918e70 | 4435 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4436 | target (we'd otherwise be in an inconsistent state) and then |
4437 | propogate the error on up the exception chain. This ensures that | |
4438 | the caller doesn't stumble along blindly assuming that the | |
4439 | function succeeded. The CLI doesn't have this problem but other | |
4440 | UI's, such as MI do. | |
36918e70 AC |
4441 | |
4442 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4443 | this function should return an error indication letting the | |
ce2826aa | 4444 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4445 | ``target remote'' is directly wired to this function making that |
4446 | impossible. On a positive note, the CLI side of this problem has | |
4447 | been fixed - the function set_cmd_context() makes it possible for | |
4448 | all the ``target ....'' commands to share a common callback | |
4449 | function. See cli-dump.c. */ | |
109c3e39 | 4450 | { |
04bd08de | 4451 | volatile struct gdb_exception ex; |
2d717e4f | 4452 | |
04bd08de TT |
4453 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4454 | { | |
4455 | remote_start_remote (from_tty, target, extended_p); | |
4456 | } | |
109c3e39 AC |
4457 | if (ex.reason < 0) |
4458 | { | |
c8d104ad PA |
4459 | /* Pop the partially set up target - unless something else did |
4460 | already before throwing the exception. */ | |
5d93a237 | 4461 | if (rs->remote_desc != NULL) |
78a095c3 | 4462 | remote_unpush_target (); |
c6ebd6cf | 4463 | if (target_async_permitted) |
109c3e39 AC |
4464 | wait_forever_enabled_p = 1; |
4465 | throw_exception (ex); | |
4466 | } | |
4467 | } | |
c906108c | 4468 | |
c6ebd6cf | 4469 | if (target_async_permitted) |
92d1e331 | 4470 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4471 | } |
4472 | ||
c906108c SS |
4473 | /* This takes a program previously attached to and detaches it. After |
4474 | this is done, GDB can be used to debug some other program. We | |
4475 | better not have left any breakpoints in the target program or it'll | |
4476 | die when it hits one. */ | |
4477 | ||
4478 | static void | |
52554a0e | 4479 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4480 | { |
82f73884 | 4481 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4482 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4483 | |
4484 | if (args) | |
8a3fe4f8 | 4485 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4486 | |
2d717e4f DJ |
4487 | if (!target_has_execution) |
4488 | error (_("No process to detach from.")); | |
4489 | ||
7cee1e54 PA |
4490 | if (from_tty) |
4491 | { | |
4492 | char *exec_file = get_exec_file (0); | |
4493 | if (exec_file == NULL) | |
4494 | exec_file = ""; | |
4495 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4496 | target_pid_to_str (pid_to_ptid (pid))); | |
4497 | gdb_flush (gdb_stdout); | |
4498 | } | |
4499 | ||
c906108c | 4500 | /* Tell the remote target to detach. */ |
82f73884 | 4501 | if (remote_multi_process_p (rs)) |
bba74b36 | 4502 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4503 | else |
4504 | strcpy (rs->buf, "D"); | |
4505 | ||
4ddda9b5 PA |
4506 | putpkt (rs->buf); |
4507 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4508 | ||
82f73884 PA |
4509 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4510 | ; | |
4511 | else if (rs->buf[0] == '\0') | |
4512 | error (_("Remote doesn't know how to detach")); | |
4513 | else | |
4ddda9b5 | 4514 | error (_("Can't detach process.")); |
c906108c | 4515 | |
7cee1e54 PA |
4516 | if (from_tty && !extended) |
4517 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4518 | |
82f73884 | 4519 | target_mourn_inferior (); |
2d717e4f DJ |
4520 | } |
4521 | ||
4522 | static void | |
52554a0e | 4523 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4524 | { |
4525 | remote_detach_1 (args, from_tty, 0); | |
4526 | } | |
4527 | ||
4528 | static void | |
52554a0e | 4529 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4530 | { |
4531 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4532 | } |
4533 | ||
6ad8ae5c DJ |
4534 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4535 | ||
43ff13b4 | 4536 | static void |
597320e7 | 4537 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4538 | { |
43ff13b4 | 4539 | if (args) |
2d717e4f | 4540 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4541 | |
2d717e4f DJ |
4542 | /* Make sure we unpush even the extended remote targets; mourn |
4543 | won't do it. So call remote_mourn_1 directly instead of | |
4544 | target_mourn_inferior. */ | |
4545 | remote_mourn_1 (target); | |
4546 | ||
43ff13b4 JM |
4547 | if (from_tty) |
4548 | puts_filtered ("Ending remote debugging.\n"); | |
4549 | } | |
4550 | ||
2d717e4f DJ |
4551 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4552 | be chatty about it. */ | |
4553 | ||
4554 | static void | |
4555 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4556 | { | |
4557 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4558 | int pid; |
96ef3384 | 4559 | char *wait_status = NULL; |
2d717e4f | 4560 | |
74164c56 | 4561 | pid = parse_pid_to_attach (args); |
2d717e4f | 4562 | |
74164c56 JK |
4563 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4564 | way as in other targets. */ | |
2d717e4f DJ |
4565 | |
4566 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4567 | error (_("This target does not support attaching to a process")); | |
4568 | ||
7cee1e54 PA |
4569 | if (from_tty) |
4570 | { | |
4571 | char *exec_file = get_exec_file (0); | |
4572 | ||
4573 | if (exec_file) | |
4574 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4575 | target_pid_to_str (pid_to_ptid (pid))); | |
4576 | else | |
4577 | printf_unfiltered (_("Attaching to %s\n"), | |
4578 | target_pid_to_str (pid_to_ptid (pid))); | |
4579 | ||
4580 | gdb_flush (gdb_stdout); | |
4581 | } | |
4582 | ||
bba74b36 | 4583 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4584 | putpkt (rs->buf); |
4585 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4586 | ||
3e43a32a MS |
4587 | if (packet_ok (rs->buf, |
4588 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4589 | { |
74531fed PA |
4590 | if (!non_stop) |
4591 | { | |
4592 | /* Save the reply for later. */ | |
4593 | wait_status = alloca (strlen (rs->buf) + 1); | |
4594 | strcpy (wait_status, rs->buf); | |
4595 | } | |
4596 | else if (strcmp (rs->buf, "OK") != 0) | |
4597 | error (_("Attaching to %s failed with: %s"), | |
4598 | target_pid_to_str (pid_to_ptid (pid)), | |
4599 | rs->buf); | |
2d717e4f DJ |
4600 | } |
4601 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4602 | error (_("This target does not support attaching to a process")); | |
4603 | else | |
4604 | error (_("Attaching to %s failed"), | |
4605 | target_pid_to_str (pid_to_ptid (pid))); | |
4606 | ||
49c62f2e | 4607 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4608 | |
2d717e4f | 4609 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4610 | |
bad34192 PA |
4611 | if (non_stop) |
4612 | { | |
4613 | struct thread_info *thread; | |
79d7f229 | 4614 | |
bad34192 PA |
4615 | /* Get list of threads. */ |
4616 | remote_threads_info (target); | |
82f73884 | 4617 | |
bad34192 PA |
4618 | thread = first_thread_of_process (pid); |
4619 | if (thread) | |
4620 | inferior_ptid = thread->ptid; | |
4621 | else | |
4622 | inferior_ptid = pid_to_ptid (pid); | |
4623 | ||
4624 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4625 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4626 | } |
74531fed | 4627 | else |
bad34192 PA |
4628 | { |
4629 | /* Now, if we have thread information, update inferior_ptid. */ | |
4630 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4631 | ||
4632 | /* Add the main thread to the thread list. */ | |
4633 | add_thread_silent (inferior_ptid); | |
4634 | } | |
c0a2216e | 4635 | |
96ef3384 UW |
4636 | /* Next, if the target can specify a description, read it. We do |
4637 | this before anything involving memory or registers. */ | |
4638 | target_find_description (); | |
4639 | ||
74531fed PA |
4640 | if (!non_stop) |
4641 | { | |
4642 | /* Use the previously fetched status. */ | |
4643 | gdb_assert (wait_status != NULL); | |
4644 | ||
4645 | if (target_can_async_p ()) | |
4646 | { | |
722247f1 YQ |
4647 | struct notif_event *reply |
4648 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4649 | |
722247f1 | 4650 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4651 | |
4652 | target_async (inferior_event_handler, 0); | |
4653 | } | |
4654 | else | |
4655 | { | |
4656 | gdb_assert (wait_status != NULL); | |
4657 | strcpy (rs->buf, wait_status); | |
4658 | rs->cached_wait_status = 1; | |
4659 | } | |
4660 | } | |
4661 | else | |
4662 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4663 | } |
4664 | ||
4665 | static void | |
136d6dae | 4666 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4667 | { |
136d6dae | 4668 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4669 | } |
4670 | ||
c906108c SS |
4671 | /* Convert hex digit A to a number. */ |
4672 | ||
30559e10 | 4673 | static int |
fba45db2 | 4674 | fromhex (int a) |
c906108c SS |
4675 | { |
4676 | if (a >= '0' && a <= '9') | |
4677 | return a - '0'; | |
4678 | else if (a >= 'a' && a <= 'f') | |
4679 | return a - 'a' + 10; | |
4680 | else if (a >= 'A' && a <= 'F') | |
4681 | return a - 'A' + 10; | |
c5aa993b | 4682 | else |
8a3fe4f8 | 4683 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4684 | } |
4685 | ||
00bf0b85 | 4686 | int |
cfd77fa1 | 4687 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4688 | { |
4689 | int i; | |
4690 | ||
30559e10 MS |
4691 | for (i = 0; i < count; i++) |
4692 | { | |
4693 | if (hex[0] == 0 || hex[1] == 0) | |
4694 | { | |
4695 | /* Hex string is short, or of uneven length. | |
23860348 | 4696 | Return the count that has been converted so far. */ |
30559e10 MS |
4697 | return i; |
4698 | } | |
4699 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4700 | hex += 2; | |
4701 | } | |
4702 | return i; | |
4703 | } | |
4704 | ||
c906108c SS |
4705 | /* Convert number NIB to a hex digit. */ |
4706 | ||
4707 | static int | |
fba45db2 | 4708 | tohex (int nib) |
c906108c SS |
4709 | { |
4710 | if (nib < 10) | |
c5aa993b | 4711 | return '0' + nib; |
c906108c | 4712 | else |
c5aa993b | 4713 | return 'a' + nib - 10; |
c906108c | 4714 | } |
30559e10 | 4715 | |
00bf0b85 | 4716 | int |
cfd77fa1 | 4717 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4718 | { |
4719 | int i; | |
a744cf53 | 4720 | |
23860348 | 4721 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4722 | if (count == 0) |
cfd77fa1 | 4723 | count = strlen ((char *) bin); |
30559e10 MS |
4724 | |
4725 | for (i = 0; i < count; i++) | |
4726 | { | |
4727 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4728 | *hex++ = tohex (*bin++ & 0xf); | |
4729 | } | |
4730 | *hex = 0; | |
4731 | return i; | |
4732 | } | |
c906108c | 4733 | \f |
506fb367 DJ |
4734 | /* Check for the availability of vCont. This function should also check |
4735 | the response. */ | |
c906108c SS |
4736 | |
4737 | static void | |
6d820c5c | 4738 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4739 | { |
2e9f7625 | 4740 | char *buf; |
6d820c5c | 4741 | |
2e9f7625 DJ |
4742 | strcpy (rs->buf, "vCont?"); |
4743 | putpkt (rs->buf); | |
6d820c5c | 4744 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4745 | buf = rs->buf; |
c906108c | 4746 | |
506fb367 DJ |
4747 | /* Make sure that the features we assume are supported. */ |
4748 | if (strncmp (buf, "vCont", 5) == 0) | |
4749 | { | |
4750 | char *p = &buf[5]; | |
4751 | int support_s, support_S, support_c, support_C; | |
4752 | ||
4753 | support_s = 0; | |
4754 | support_S = 0; | |
4755 | support_c = 0; | |
4756 | support_C = 0; | |
d458bd84 | 4757 | rs->supports_vCont.t = 0; |
c1e36e3e | 4758 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4759 | while (p && *p == ';') |
4760 | { | |
4761 | p++; | |
4762 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4763 | support_s = 1; | |
4764 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4765 | support_S = 1; | |
4766 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4767 | support_c = 1; | |
4768 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4769 | support_C = 1; | |
74531fed | 4770 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4771 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4772 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4773 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4774 | |
4775 | p = strchr (p, ';'); | |
4776 | } | |
c906108c | 4777 | |
506fb367 DJ |
4778 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4779 | BUF will make packet_ok disable the packet. */ | |
4780 | if (!support_s || !support_S || !support_c || !support_C) | |
4781 | buf[0] = 0; | |
4782 | } | |
c906108c | 4783 | |
444abaca | 4784 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4785 | } |
c906108c | 4786 | |
0d8f58ca PA |
4787 | /* Helper function for building "vCont" resumptions. Write a |
4788 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4789 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4790 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4791 | resumed thread should be single-stepped and/or signalled. If PTID | |
4792 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4793 | represents a process, then all threads of the process are resumed; | |
4794 | the thread to be stepped and/or signalled is given in the global | |
4795 | INFERIOR_PTID. */ | |
4796 | ||
4797 | static char * | |
4798 | append_resumption (char *p, char *endp, | |
2ea28649 | 4799 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4800 | { |
4801 | struct remote_state *rs = get_remote_state (); | |
4802 | ||
a493e3e2 | 4803 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4804 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4805 | else if (step |
4806 | /* GDB is willing to range step. */ | |
4807 | && use_range_stepping | |
4808 | /* Target supports range stepping. */ | |
4809 | && rs->supports_vCont.r | |
4810 | /* We don't currently support range stepping multiple | |
4811 | threads with a wildcard (though the protocol allows it, | |
4812 | so stubs shouldn't make an active effort to forbid | |
4813 | it). */ | |
4814 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4815 | { | |
4816 | struct thread_info *tp; | |
4817 | ||
4818 | if (ptid_equal (ptid, minus_one_ptid)) | |
4819 | { | |
4820 | /* If we don't know about the target thread's tid, then | |
4821 | we're resuming magic_null_ptid (see caller). */ | |
4822 | tp = find_thread_ptid (magic_null_ptid); | |
4823 | } | |
4824 | else | |
4825 | tp = find_thread_ptid (ptid); | |
4826 | gdb_assert (tp != NULL); | |
4827 | ||
4828 | if (tp->control.may_range_step) | |
4829 | { | |
4830 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4831 | ||
4832 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4833 | phex_nz (tp->control.step_range_start, | |
4834 | addr_size), | |
4835 | phex_nz (tp->control.step_range_end, | |
4836 | addr_size)); | |
4837 | } | |
4838 | else | |
4839 | p += xsnprintf (p, endp - p, ";s"); | |
4840 | } | |
0d8f58ca PA |
4841 | else if (step) |
4842 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4843 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4844 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4845 | else | |
4846 | p += xsnprintf (p, endp - p, ";c"); | |
4847 | ||
4848 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4849 | { | |
4850 | ptid_t nptid; | |
4851 | ||
4852 | /* All (-1) threads of process. */ | |
4853 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4854 | ||
4855 | p += xsnprintf (p, endp - p, ":"); | |
4856 | p = write_ptid (p, endp, nptid); | |
4857 | } | |
4858 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4859 | { | |
4860 | p += xsnprintf (p, endp - p, ":"); | |
4861 | p = write_ptid (p, endp, ptid); | |
4862 | } | |
4863 | ||
4864 | return p; | |
4865 | } | |
4866 | ||
e5ef252a PA |
4867 | /* Append a vCont continue-with-signal action for threads that have a |
4868 | non-zero stop signal. */ | |
4869 | ||
4870 | static char * | |
4871 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4872 | { | |
4873 | struct thread_info *thread; | |
4874 | ||
4875 | ALL_THREADS (thread) | |
4876 | if (ptid_match (thread->ptid, ptid) | |
4877 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4878 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4879 | && signal_pass_state (thread->suspend.stop_signal)) | |
4880 | { | |
4881 | p = append_resumption (p, endp, thread->ptid, | |
4882 | 0, thread->suspend.stop_signal); | |
4883 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4884 | } | |
4885 | ||
4886 | return p; | |
4887 | } | |
4888 | ||
506fb367 DJ |
4889 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4890 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4891 | resumed thread should be single-stepped and/or signalled. If PTID |
4892 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4893 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4894 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4895 | |
506fb367 DJ |
4896 | This function issues a strict subset of all possible vCont commands at the |
4897 | moment. */ | |
44eaed12 | 4898 | |
506fb367 | 4899 | static int |
2ea28649 | 4900 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4901 | { |
4902 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4903 | char *p; |
4904 | char *endp; | |
44eaed12 | 4905 | |
444abaca | 4906 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4907 | remote_vcont_probe (rs); |
44eaed12 | 4908 | |
444abaca | 4909 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4910 | return 0; |
44eaed12 | 4911 | |
82f73884 PA |
4912 | p = rs->buf; |
4913 | endp = rs->buf + get_remote_packet_size (); | |
4914 | ||
506fb367 DJ |
4915 | /* If we could generate a wider range of packets, we'd have to worry |
4916 | about overflowing BUF. Should there be a generic | |
4917 | "multi-part-packet" packet? */ | |
4918 | ||
0d8f58ca PA |
4919 | p += xsnprintf (p, endp - p, "vCont"); |
4920 | ||
79d7f229 | 4921 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4922 | { |
79d7f229 PA |
4923 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4924 | so we don't have any TID numbers the inferior will | |
4925 | understand. Make sure to only send forms that do not specify | |
4926 | a TID. */ | |
a9cbf802 | 4927 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4928 | } |
0d8f58ca | 4929 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4930 | { |
0d8f58ca PA |
4931 | /* Resume all threads (of all processes, or of a single |
4932 | process), with preference for INFERIOR_PTID. This assumes | |
4933 | inferior_ptid belongs to the set of all threads we are about | |
4934 | to resume. */ | |
a493e3e2 | 4935 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4936 | { |
0d8f58ca PA |
4937 | /* Step inferior_ptid, with or without signal. */ |
4938 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4939 | } |
0d8f58ca | 4940 | |
e5ef252a PA |
4941 | /* Also pass down any pending signaled resumption for other |
4942 | threads not the current. */ | |
4943 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4944 | ||
0d8f58ca | 4945 | /* And continue others without a signal. */ |
a493e3e2 | 4946 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4947 | } |
4948 | else | |
506fb367 DJ |
4949 | { |
4950 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4951 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4952 | } |
c906108c | 4953 | |
82f73884 PA |
4954 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4955 | putpkt (rs->buf); | |
506fb367 | 4956 | |
74531fed PA |
4957 | if (non_stop) |
4958 | { | |
4959 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4960 | reply will be reported asynchronously by means of a `%Stop' | |
4961 | notification. */ | |
4962 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4963 | if (strcmp (rs->buf, "OK") != 0) | |
4964 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4965 | } | |
4966 | ||
506fb367 | 4967 | return 1; |
c906108c | 4968 | } |
43ff13b4 | 4969 | |
506fb367 DJ |
4970 | /* Tell the remote machine to resume. */ |
4971 | ||
43ff13b4 | 4972 | static void |
28439f5e | 4973 | remote_resume (struct target_ops *ops, |
2ea28649 | 4974 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4975 | { |
d01949b6 | 4976 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4977 | char *buf; |
43ff13b4 | 4978 | |
722247f1 YQ |
4979 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4980 | (explained in remote-notif.c:handle_notification) so | |
4981 | remote_notif_process is not called. We need find a place where | |
4982 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4983 | before resuming inferior, because inferior was stopped and no RSP | |
4984 | traffic at that moment. */ | |
4985 | if (!non_stop) | |
5965e028 | 4986 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4987 | |
b73be471 | 4988 | rs->last_sent_signal = siggnal; |
280ceea3 | 4989 | rs->last_sent_step = step; |
43ff13b4 | 4990 | |
506fb367 | 4991 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4992 | /* No reverse support (yet) for vCont. */ |
4993 | if (execution_direction != EXEC_REVERSE) | |
4994 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4995 | goto done; | |
506fb367 | 4996 | |
79d7f229 PA |
4997 | /* All other supported resume packets do use Hc, so set the continue |
4998 | thread. */ | |
4999 | if (ptid_equal (ptid, minus_one_ptid)) | |
5000 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5001 | else |
79d7f229 | 5002 | set_continue_thread (ptid); |
506fb367 | 5003 | |
2e9f7625 | 5004 | buf = rs->buf; |
b2175913 MS |
5005 | if (execution_direction == EXEC_REVERSE) |
5006 | { | |
5007 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5008 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5009 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5010 | siggnal); |
40ab02ce MS |
5011 | |
5012 | if (step | |
5013 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
5014 | error (_("Remote reverse-step not supported.")); | |
5015 | if (!step | |
5016 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 5017 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5018 | |
b2175913 MS |
5019 | strcpy (buf, step ? "bs" : "bc"); |
5020 | } | |
a493e3e2 | 5021 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5022 | { |
5023 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5024 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5025 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5026 | buf[3] = '\0'; |
5027 | } | |
5028 | else | |
c5aa993b | 5029 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5030 | |
44eaed12 | 5031 | putpkt (buf); |
43ff13b4 | 5032 | |
75c99385 | 5033 | done: |
2acceee2 | 5034 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5035 | with the event loop. NOTE: this is the one place where all the |
5036 | execution commands end up. We could alternatively do this in each | |
23860348 | 5037 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5038 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5039 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5040 | NOT asynchronously. */ |
362646f5 | 5041 | if (target_can_async_p ()) |
2acceee2 | 5042 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
5043 | |
5044 | /* We've just told the target to resume. The remote server will | |
5045 | wait for the inferior to stop, and then send a stop reply. In | |
5046 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5047 | because the stub wouldn't be ready to process it. This applies |
5048 | only to the base all-stop protocol, however. In non-stop (which | |
5049 | only supports vCont), the stub replies with an "OK", and is | |
5050 | immediate able to process further serial input. */ | |
5051 | if (!non_stop) | |
5052 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5053 | } |
c906108c | 5054 | \f |
43ff13b4 JM |
5055 | |
5056 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5057 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5058 | static void |
934b9bac | 5059 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5060 | { |
934b9bac | 5061 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5062 | } |
5063 | ||
23860348 | 5064 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5065 | static void |
934b9bac | 5066 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5067 | { |
934b9bac JK |
5068 | signal (sig, async_handle_remote_sigint_twice); |
5069 | mark_async_signal_handler (async_sigint_remote_token); | |
43ff13b4 JM |
5070 | } |
5071 | ||
5072 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5073 | sent once. It will take effect the second time that the user sends | |
23860348 | 5074 | a ^C. */ |
43ff13b4 | 5075 | static void |
934b9bac | 5076 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5077 | { |
934b9bac JK |
5078 | signal (sig, async_handle_remote_sigint); |
5079 | mark_async_signal_handler (async_sigint_remote_twice_token); | |
43ff13b4 JM |
5080 | } |
5081 | ||
6426a772 | 5082 | /* Perform the real interruption of the target execution, in response |
23860348 | 5083 | to a ^C. */ |
c5aa993b | 5084 | static void |
fba45db2 | 5085 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5086 | { |
5087 | if (remote_debug) | |
248fd3bf | 5088 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5089 | |
94cc34af | 5090 | target_stop (inferior_ptid); |
43ff13b4 JM |
5091 | } |
5092 | ||
0df8b418 | 5093 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5094 | up on the target alltogether. */ |
47e1ce27 | 5095 | static void |
fba45db2 | 5096 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5097 | { |
2df3850c | 5098 | if (remote_debug) |
248fd3bf | 5099 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5100 | |
5101 | interrupt_query (); | |
43ff13b4 JM |
5102 | } |
5103 | ||
5104 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5105 | stopped. */ |
6426a772 | 5106 | static void |
934b9bac | 5107 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5108 | { |
5109 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5110 | } |
5111 | ||
c906108c SS |
5112 | /* Send ^C to target to halt it. Target will respond, and send us a |
5113 | packet. */ | |
507f3c78 | 5114 | static void (*ofunc) (int); |
c906108c | 5115 | |
0df8b418 MS |
5116 | /* The command line interface's stop routine. This function is installed |
5117 | as a signal handler for SIGINT. The first time a user requests a | |
5118 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5119 | response from the target (it didn't stop when the user requested it), |
23860348 | 5120 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5121 | static void |
934b9bac | 5122 | sync_remote_interrupt (int signo) |
c906108c | 5123 | { |
23860348 | 5124 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5125 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5126 | |
934b9bac | 5127 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5128 | } |
5129 | ||
5130 | /* The user typed ^C twice. */ | |
5131 | ||
5132 | static void | |
934b9bac | 5133 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5134 | { |
5135 | signal (signo, ofunc); | |
934b9bac JK |
5136 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5137 | signal (signo, sync_remote_interrupt); | |
c906108c | 5138 | } |
7a292a7a | 5139 | |
74531fed PA |
5140 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5141 | thread, all threads of a remote process, or all threads of all | |
5142 | processes. */ | |
5143 | ||
5144 | static void | |
5145 | remote_stop_ns (ptid_t ptid) | |
5146 | { | |
5147 | struct remote_state *rs = get_remote_state (); | |
5148 | char *p = rs->buf; | |
5149 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
5150 | |
5151 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
5152 | remote_vcont_probe (rs); | |
5153 | ||
d458bd84 | 5154 | if (!rs->supports_vCont.t) |
74531fed PA |
5155 | error (_("Remote server does not support stopping threads")); |
5156 | ||
f91d3df5 PA |
5157 | if (ptid_equal (ptid, minus_one_ptid) |
5158 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5159 | p += xsnprintf (p, endp - p, "vCont;t"); |
5160 | else | |
5161 | { | |
5162 | ptid_t nptid; | |
5163 | ||
74531fed PA |
5164 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5165 | ||
5166 | if (ptid_is_pid (ptid)) | |
5167 | /* All (-1) threads of process. */ | |
5168 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
5169 | else | |
5170 | { | |
5171 | /* Small optimization: if we already have a stop reply for | |
5172 | this thread, no use in telling the stub we want this | |
5173 | stopped. */ | |
5174 | if (peek_stop_reply (ptid)) | |
5175 | return; | |
5176 | ||
5177 | nptid = ptid; | |
5178 | } | |
5179 | ||
a9cbf802 | 5180 | write_ptid (p, endp, nptid); |
74531fed PA |
5181 | } |
5182 | ||
5183 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5184 | come in asynchronously by notification. */ | |
5185 | putpkt (rs->buf); | |
5186 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5187 | if (strcmp (rs->buf, "OK") != 0) | |
5188 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5189 | } | |
5190 | ||
5191 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5192 | remote target. It is undefined which thread of which process | |
5193 | reports the stop. */ | |
5194 | ||
5195 | static void | |
5196 | remote_stop_as (ptid_t ptid) | |
5197 | { | |
5198 | struct remote_state *rs = get_remote_state (); | |
5199 | ||
3a29589a DJ |
5200 | rs->ctrlc_pending_p = 1; |
5201 | ||
74531fed PA |
5202 | /* If the inferior is stopped already, but the core didn't know |
5203 | about it yet, just ignore the request. The cached wait status | |
5204 | will be collected in remote_wait. */ | |
5205 | if (rs->cached_wait_status) | |
5206 | return; | |
5207 | ||
9a7071a8 JB |
5208 | /* Send interrupt_sequence to remote target. */ |
5209 | send_interrupt_sequence (); | |
74531fed PA |
5210 | } |
5211 | ||
0df8b418 | 5212 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5213 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5214 | will eventually end up here. */ |
74531fed | 5215 | |
c906108c | 5216 | static void |
94cc34af | 5217 | remote_stop (ptid_t ptid) |
c906108c | 5218 | { |
7a292a7a | 5219 | if (remote_debug) |
0f71a2f6 | 5220 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5221 | |
74531fed PA |
5222 | if (non_stop) |
5223 | remote_stop_ns (ptid); | |
c906108c | 5224 | else |
74531fed | 5225 | remote_stop_as (ptid); |
c906108c SS |
5226 | } |
5227 | ||
5228 | /* Ask the user what to do when an interrupt is received. */ | |
5229 | ||
5230 | static void | |
fba45db2 | 5231 | interrupt_query (void) |
c906108c SS |
5232 | { |
5233 | target_terminal_ours (); | |
5234 | ||
74531fed | 5235 | if (target_can_async_p ()) |
c906108c | 5236 | { |
74531fed | 5237 | signal (SIGINT, handle_sigint); |
039e3c22 | 5238 | quit (); |
c906108c | 5239 | } |
74531fed PA |
5240 | else |
5241 | { | |
9e2f0ad4 HZ |
5242 | if (query (_("Interrupted while waiting for the program.\n\ |
5243 | Give up (and stop debugging it)? "))) | |
74531fed | 5244 | { |
78a095c3 | 5245 | remote_unpush_target (); |
039e3c22 | 5246 | quit (); |
74531fed PA |
5247 | } |
5248 | } | |
c906108c SS |
5249 | |
5250 | target_terminal_inferior (); | |
5251 | } | |
5252 | ||
6426a772 JM |
5253 | /* Enable/disable target terminal ownership. Most targets can use |
5254 | terminal groups to control terminal ownership. Remote targets are | |
5255 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5256 | is required. */ |
6426a772 JM |
5257 | |
5258 | static void | |
75c99385 | 5259 | remote_terminal_inferior (void) |
6426a772 | 5260 | { |
c6ebd6cf | 5261 | if (!target_async_permitted) |
75c99385 PA |
5262 | /* Nothing to do. */ |
5263 | return; | |
5264 | ||
d9d2d8b6 PA |
5265 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5266 | idempotent. The event-loop GDB talking to an asynchronous target | |
5267 | with a synchronous command calls this function from both | |
5268 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5269 | transfer the terminal to the target when it shouldn't this guard | |
5270 | can go away. */ | |
6426a772 JM |
5271 | if (!remote_async_terminal_ours_p) |
5272 | return; | |
5273 | delete_file_handler (input_fd); | |
5274 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5275 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5276 | /* NOTE: At this point we could also register our selves as the |
5277 | recipient of all input. Any characters typed could then be | |
23860348 | 5278 | passed on down to the target. */ |
6426a772 JM |
5279 | } |
5280 | ||
5281 | static void | |
75c99385 | 5282 | remote_terminal_ours (void) |
6426a772 | 5283 | { |
c6ebd6cf | 5284 | if (!target_async_permitted) |
75c99385 PA |
5285 | /* Nothing to do. */ |
5286 | return; | |
5287 | ||
5288 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5289 | if (remote_async_terminal_ours_p) |
5290 | return; | |
934b9bac | 5291 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5292 | add_file_handler (input_fd, stdin_event_handler, 0); |
5293 | remote_async_terminal_ours_p = 1; | |
5294 | } | |
5295 | ||
176a6961 | 5296 | static void |
917317f4 | 5297 | remote_console_output (char *msg) |
c906108c SS |
5298 | { |
5299 | char *p; | |
5300 | ||
c5aa993b | 5301 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5302 | { |
5303 | char tb[2]; | |
5304 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5305 | |
c906108c SS |
5306 | tb[0] = c; |
5307 | tb[1] = 0; | |
43ff13b4 | 5308 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5309 | } |
00db5b94 PA |
5310 | gdb_flush (gdb_stdtarg); |
5311 | } | |
74531fed PA |
5312 | |
5313 | typedef struct cached_reg | |
5314 | { | |
5315 | int num; | |
5316 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5317 | } cached_reg_t; | |
5318 | ||
5319 | DEF_VEC_O(cached_reg_t); | |
5320 | ||
722247f1 | 5321 | typedef struct stop_reply |
74531fed | 5322 | { |
722247f1 | 5323 | struct notif_event base; |
74531fed | 5324 | |
722247f1 | 5325 | /* The identifier of the thread about this event */ |
74531fed PA |
5326 | ptid_t ptid; |
5327 | ||
340e3c99 | 5328 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5329 | connection, represented by a remote_state object, is closed, |
5330 | all the associated stop_reply events should be released. */ | |
5331 | struct remote_state *rs; | |
5332 | ||
74531fed PA |
5333 | struct target_waitstatus ws; |
5334 | ||
15148d6a PA |
5335 | /* Expedited registers. This makes remote debugging a bit more |
5336 | efficient for those targets that provide critical registers as | |
5337 | part of their normal status mechanism (as another roundtrip to | |
5338 | fetch them is avoided). */ | |
74531fed PA |
5339 | VEC(cached_reg_t) *regcache; |
5340 | ||
5341 | int stopped_by_watchpoint_p; | |
5342 | CORE_ADDR watch_data_address; | |
5343 | ||
dc146f7c | 5344 | int core; |
722247f1 | 5345 | } *stop_reply_p; |
a744cf53 | 5346 | |
722247f1 YQ |
5347 | DECLARE_QUEUE_P (stop_reply_p); |
5348 | DEFINE_QUEUE_P (stop_reply_p); | |
5349 | /* The list of already fetched and acknowledged stop events. This | |
5350 | queue is used for notification Stop, and other notifications | |
5351 | don't need queue for their events, because the notification events | |
5352 | of Stop can't be consumed immediately, so that events should be | |
5353 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5354 | time. Other notifications can consume their events immediately, | |
5355 | so queue is not needed for them. */ | |
5356 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5357 | |
5358 | static void | |
5359 | stop_reply_xfree (struct stop_reply *r) | |
5360 | { | |
f48ff2a7 | 5361 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5362 | } |
5363 | ||
722247f1 YQ |
5364 | static void |
5365 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5366 | struct notif_event *event) | |
5367 | { | |
5368 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5369 | } | |
5370 | ||
5371 | static void | |
5372 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5373 | struct notif_event *event) | |
5374 | { | |
5375 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5376 | ||
5377 | /* acknowledge */ | |
5378 | putpkt ((char *) self->ack_command); | |
5379 | ||
5380 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5381 | /* We got an unknown stop reply. */ | |
5382 | error (_("Unknown stop reply")); | |
5383 | ||
5384 | push_stop_reply (stop_reply); | |
5385 | } | |
5386 | ||
5387 | static int | |
5388 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5389 | { | |
5390 | /* We can't get pending events in remote_notif_process for | |
5391 | notification stop, and we have to do this in remote_wait_ns | |
5392 | instead. If we fetch all queued events from stub, remote stub | |
5393 | may exit and we have no chance to process them back in | |
5394 | remote_wait_ns. */ | |
5395 | mark_async_event_handler (remote_async_inferior_event_token); | |
5396 | return 0; | |
5397 | } | |
5398 | ||
5399 | static void | |
5400 | stop_reply_dtr (struct notif_event *event) | |
5401 | { | |
5402 | struct stop_reply *r = (struct stop_reply *) event; | |
5403 | ||
5404 | VEC_free (cached_reg_t, r->regcache); | |
5405 | } | |
5406 | ||
5407 | static struct notif_event * | |
5408 | remote_notif_stop_alloc_reply (void) | |
5409 | { | |
5410 | struct notif_event *r | |
5411 | = (struct notif_event *) XMALLOC (struct stop_reply); | |
5412 | ||
5413 | r->dtr = stop_reply_dtr; | |
5414 | ||
5415 | return r; | |
5416 | } | |
5417 | ||
5418 | /* A client of notification Stop. */ | |
5419 | ||
5420 | struct notif_client notif_client_stop = | |
5421 | { | |
5422 | "Stop", | |
5423 | "vStopped", | |
5424 | remote_notif_stop_parse, | |
5425 | remote_notif_stop_ack, | |
5426 | remote_notif_stop_can_get_pending_events, | |
5427 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5428 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5429 | }; |
5430 | ||
5431 | /* A parameter to pass data in and out. */ | |
5432 | ||
5433 | struct queue_iter_param | |
5434 | { | |
5435 | void *input; | |
5436 | struct stop_reply *output; | |
5437 | }; | |
5438 | ||
f48ff2a7 YQ |
5439 | /* Remove stop replies in the queue if its pid is equal to the given |
5440 | inferior's pid. */ | |
722247f1 YQ |
5441 | |
5442 | static int | |
f48ff2a7 YQ |
5443 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5444 | QUEUE_ITER (stop_reply_p) *iter, | |
5445 | stop_reply_p event, | |
5446 | void *data) | |
722247f1 YQ |
5447 | { |
5448 | struct queue_iter_param *param = data; | |
5449 | struct inferior *inf = param->input; | |
5450 | ||
f48ff2a7 | 5451 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5452 | { |
5453 | stop_reply_xfree (event); | |
5454 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5455 | } | |
5456 | ||
5457 | return 1; | |
5458 | } | |
5459 | ||
f48ff2a7 | 5460 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5461 | |
74531fed | 5462 | static void |
5f4cf0bb | 5463 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5464 | { |
722247f1 YQ |
5465 | int i; |
5466 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5467 | struct stop_reply *reply; |
5468 | struct remote_state *rs = get_remote_state (); | |
5469 | struct remote_notif_state *rns = rs->notif_state; | |
5470 | ||
5471 | /* This function can be notified when an inferior exists. When the | |
5472 | target is not remote, the notification state is NULL. */ | |
5473 | if (rs->remote_desc == NULL) | |
5474 | return; | |
5475 | ||
5476 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5477 | |
74531fed | 5478 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5479 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5480 | { |
722247f1 | 5481 | stop_reply_xfree (reply); |
f48ff2a7 | 5482 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5483 | } |
c906108c | 5484 | |
722247f1 YQ |
5485 | param.input = inf; |
5486 | param.output = NULL; | |
74531fed PA |
5487 | /* Discard the stop replies we have already pulled with |
5488 | vStopped. */ | |
722247f1 | 5489 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5490 | remove_stop_reply_for_inferior, ¶m); |
5491 | } | |
5492 | ||
bcc75809 YQ |
5493 | /* If its remote state is equal to the given remote state, |
5494 | remove EVENT from the stop reply queue. */ | |
5495 | ||
5496 | static int | |
5497 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5498 | QUEUE_ITER (stop_reply_p) *iter, | |
5499 | stop_reply_p event, | |
5500 | void *data) | |
5501 | { | |
5502 | struct queue_iter_param *param = data; | |
5503 | struct remote_state *rs = param->input; | |
5504 | ||
5505 | if (event->rs == rs) | |
5506 | { | |
5507 | stop_reply_xfree (event); | |
5508 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5509 | } | |
5510 | ||
5511 | return 1; | |
5512 | } | |
5513 | ||
5514 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5515 | |
5516 | static void | |
bcc75809 | 5517 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5518 | { |
5519 | struct queue_iter_param param; | |
5520 | ||
bcc75809 | 5521 | param.input = rs; |
f48ff2a7 YQ |
5522 | param.output = NULL; |
5523 | /* Discard the stop replies we have already pulled with | |
5524 | vStopped. */ | |
5525 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5526 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5527 | } |
74531fed | 5528 | |
722247f1 YQ |
5529 | /* A parameter to pass data in and out. */ |
5530 | ||
5531 | static int | |
5532 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5533 | QUEUE_ITER (stop_reply_p) *iter, | |
5534 | stop_reply_p event, | |
5535 | void *data) | |
5536 | { | |
5537 | struct queue_iter_param *param = data; | |
5538 | ptid_t *ptid = param->input; | |
5539 | ||
5540 | if (ptid_match (event->ptid, *ptid)) | |
5541 | { | |
5542 | param->output = event; | |
5543 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5544 | return 0; | |
c8e38a49 | 5545 | } |
722247f1 YQ |
5546 | |
5547 | return 1; | |
74531fed | 5548 | } |
43ff13b4 | 5549 | |
722247f1 YQ |
5550 | /* Remove the first reply in 'stop_reply_queue' which matches |
5551 | PTID. */ | |
2e9f7625 | 5552 | |
722247f1 YQ |
5553 | static struct stop_reply * |
5554 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5555 | { |
722247f1 YQ |
5556 | struct queue_iter_param param; |
5557 | ||
5558 | param.input = &ptid; | |
5559 | param.output = NULL; | |
5560 | ||
5561 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5562 | remote_notif_remove_once_on_match, ¶m); | |
5563 | if (notif_debug) | |
5564 | fprintf_unfiltered (gdb_stdlog, | |
5565 | "notif: discard queued event: 'Stop' in %s\n", | |
5566 | target_pid_to_str (ptid)); | |
a744cf53 | 5567 | |
722247f1 | 5568 | return param.output; |
74531fed | 5569 | } |
75c99385 | 5570 | |
74531fed PA |
5571 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5572 | remove it from the queue, and return it. Returns NULL if none is | |
5573 | found. If there are still queued events left to process, tell the | |
5574 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5575 | |
74531fed PA |
5576 | static struct stop_reply * |
5577 | queued_stop_reply (ptid_t ptid) | |
5578 | { | |
722247f1 | 5579 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5580 | |
722247f1 | 5581 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5582 | /* There's still at least an event left. */ |
5583 | mark_async_event_handler (remote_async_inferior_event_token); | |
5584 | ||
722247f1 | 5585 | return r; |
74531fed PA |
5586 | } |
5587 | ||
5588 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5589 | know that we now have at least one queued event left to pass to the | |
5590 | core side, tell the event loop to get back to target_wait soon. */ | |
5591 | ||
5592 | static void | |
5593 | push_stop_reply (struct stop_reply *new_event) | |
5594 | { | |
722247f1 | 5595 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5596 | |
722247f1 YQ |
5597 | if (notif_debug) |
5598 | fprintf_unfiltered (gdb_stdlog, | |
5599 | "notif: push 'Stop' %s to queue %d\n", | |
5600 | target_pid_to_str (new_event->ptid), | |
5601 | QUEUE_length (stop_reply_p, | |
5602 | stop_reply_queue)); | |
74531fed PA |
5603 | |
5604 | mark_async_event_handler (remote_async_inferior_event_token); | |
5605 | } | |
5606 | ||
722247f1 YQ |
5607 | static int |
5608 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5609 | QUEUE_ITER (stop_reply_p) *iter, | |
5610 | struct stop_reply *event, | |
5611 | void *data) | |
5612 | { | |
5613 | ptid_t *ptid = data; | |
5614 | ||
5615 | return !(ptid_equal (*ptid, event->ptid) | |
5616 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5617 | } | |
5618 | ||
74531fed PA |
5619 | /* Returns true if we have a stop reply for PTID. */ |
5620 | ||
5621 | static int | |
5622 | peek_stop_reply (ptid_t ptid) | |
5623 | { | |
722247f1 YQ |
5624 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5625 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5626 | } |
5627 | ||
5628 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5629 | result is stored in EVENT, or throws an error. */ | |
5630 | ||
5631 | static void | |
5632 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5633 | { | |
5634 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5635 | ULONGEST addr; | |
5636 | char *p; | |
5637 | ||
5638 | event->ptid = null_ptid; | |
bcc75809 | 5639 | event->rs = get_remote_state (); |
74531fed PA |
5640 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5641 | event->ws.value.integer = 0; | |
74531fed PA |
5642 | event->stopped_by_watchpoint_p = 0; |
5643 | event->regcache = NULL; | |
dc146f7c | 5644 | event->core = -1; |
74531fed PA |
5645 | |
5646 | switch (buf[0]) | |
5647 | { | |
5648 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5649 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5650 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5651 | ss = signal number | |
5652 | n... = register number | |
5653 | r... = register contents | |
5654 | */ | |
5655 | ||
5656 | p = &buf[3]; /* after Txx */ | |
5657 | while (*p) | |
5658 | { | |
5659 | char *p1; | |
5660 | char *p_temp; | |
5661 | int fieldsize; | |
5662 | LONGEST pnum = 0; | |
43ff13b4 | 5663 | |
cea39f65 MS |
5664 | /* If the packet contains a register number, save it in |
5665 | pnum and set p1 to point to the character following it. | |
5666 | Otherwise p1 points to p. */ | |
3c3bea1c | 5667 | |
cea39f65 MS |
5668 | /* If this packet is an awatch packet, don't parse the 'a' |
5669 | as a register number. */ | |
c8e38a49 | 5670 | |
dc146f7c VP |
5671 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5672 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5673 | { |
5674 | /* Read the ``P'' register number. */ | |
5675 | pnum = strtol (p, &p_temp, 16); | |
5676 | p1 = p_temp; | |
5677 | } | |
5678 | else | |
5679 | p1 = p; | |
802188a7 | 5680 | |
cea39f65 MS |
5681 | if (p1 == p) /* No register number present here. */ |
5682 | { | |
5683 | p1 = strchr (p, ':'); | |
5684 | if (p1 == NULL) | |
5685 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5686 | Packet: '%s'\n"), |
cea39f65 MS |
5687 | p, buf); |
5688 | if (strncmp (p, "thread", p1 - p) == 0) | |
5689 | event->ptid = read_ptid (++p1, &p); | |
5690 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5691 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5692 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5693 | { | |
5694 | event->stopped_by_watchpoint_p = 1; | |
5695 | p = unpack_varlen_hex (++p1, &addr); | |
5696 | event->watch_data_address = (CORE_ADDR) addr; | |
5697 | } | |
5698 | else if (strncmp (p, "library", p1 - p) == 0) | |
5699 | { | |
5700 | p1++; | |
5701 | p_temp = p1; | |
5702 | while (*p_temp && *p_temp != ';') | |
5703 | p_temp++; | |
c8e38a49 | 5704 | |
5b5596ff | 5705 | event->ws.kind = TARGET_WAITKIND_LOADED; |
cea39f65 MS |
5706 | p = p_temp; |
5707 | } | |
5708 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5709 | { | |
5b5596ff PA |
5710 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; |
5711 | /* p1 will indicate "begin" or "end", but it makes | |
5712 | no difference for now, so ignore it. */ | |
cea39f65 MS |
5713 | p_temp = strchr (p1 + 1, ';'); |
5714 | if (p_temp) | |
c8e38a49 | 5715 | p = p_temp; |
cea39f65 | 5716 | } |
dc146f7c VP |
5717 | else if (strncmp (p, "core", p1 - p) == 0) |
5718 | { | |
5719 | ULONGEST c; | |
a744cf53 | 5720 | |
dc146f7c VP |
5721 | p = unpack_varlen_hex (++p1, &c); |
5722 | event->core = c; | |
5723 | } | |
cea39f65 MS |
5724 | else |
5725 | { | |
5726 | /* Silently skip unknown optional info. */ | |
5727 | p_temp = strchr (p1 + 1, ';'); | |
5728 | if (p_temp) | |
5729 | p = p_temp; | |
5730 | } | |
5731 | } | |
5732 | else | |
5733 | { | |
5734 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5735 | cached_reg_t cached_reg; | |
74531fed | 5736 | |
cea39f65 | 5737 | p = p1; |
75c99385 | 5738 | |
cea39f65 MS |
5739 | if (*p != ':') |
5740 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5741 | Packet: '%s'\n"), |
cea39f65 MS |
5742 | p, buf); |
5743 | ++p; | |
43ff13b4 | 5744 | |
cea39f65 MS |
5745 | if (reg == NULL) |
5746 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5747 | Packet: '%s'\n"), |
7c47795c | 5748 | hex_string (pnum), p, buf); |
c8e38a49 | 5749 | |
cea39f65 | 5750 | cached_reg.num = reg->regnum; |
4100683b | 5751 | |
cea39f65 | 5752 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5753 | register_size (target_gdbarch (), |
cea39f65 MS |
5754 | reg->regnum)); |
5755 | p += 2 * fieldsize; | |
f5656ead | 5756 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5757 | reg->regnum)) |
5758 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5759 | |
cea39f65 MS |
5760 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5761 | } | |
c8e38a49 | 5762 | |
cea39f65 MS |
5763 | if (*p != ';') |
5764 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5765 | buf, p); | |
5766 | ++p; | |
5767 | } | |
5b5596ff PA |
5768 | |
5769 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5770 | break; | |
5771 | ||
c8e38a49 PA |
5772 | /* fall through */ |
5773 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5774 | { |
5775 | int sig; | |
5776 | ||
5777 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5778 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5779 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5780 | event->ws.value.sig = (enum gdb_signal) sig; | |
5781 | else | |
5782 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5783 | } | |
c8e38a49 PA |
5784 | break; |
5785 | case 'W': /* Target exited. */ | |
5786 | case 'X': | |
5787 | { | |
5788 | char *p; | |
5789 | int pid; | |
5790 | ULONGEST value; | |
82f73884 | 5791 | |
c8e38a49 PA |
5792 | /* GDB used to accept only 2 hex chars here. Stubs should |
5793 | only send more if they detect GDB supports multi-process | |
5794 | support. */ | |
5795 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5796 | |
c8e38a49 PA |
5797 | if (buf[0] == 'W') |
5798 | { | |
5799 | /* The remote process exited. */ | |
74531fed PA |
5800 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5801 | event->ws.value.integer = value; | |
c8e38a49 PA |
5802 | } |
5803 | else | |
5804 | { | |
5805 | /* The remote process exited with a signal. */ | |
74531fed | 5806 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5807 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5808 | event->ws.value.sig = (enum gdb_signal) value; | |
5809 | else | |
5810 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5811 | } |
82f73884 | 5812 | |
c8e38a49 PA |
5813 | /* If no process is specified, assume inferior_ptid. */ |
5814 | pid = ptid_get_pid (inferior_ptid); | |
5815 | if (*p == '\0') | |
5816 | ; | |
5817 | else if (*p == ';') | |
5818 | { | |
5819 | p++; | |
5820 | ||
5821 | if (p == '\0') | |
82f73884 | 5822 | ; |
c8e38a49 PA |
5823 | else if (strncmp (p, |
5824 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5825 | { |
c8e38a49 | 5826 | ULONGEST upid; |
a744cf53 | 5827 | |
c8e38a49 PA |
5828 | p += sizeof ("process:") - 1; |
5829 | unpack_varlen_hex (p, &upid); | |
5830 | pid = upid; | |
82f73884 PA |
5831 | } |
5832 | else | |
5833 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5834 | } |
c8e38a49 PA |
5835 | else |
5836 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5837 | event->ptid = pid_to_ptid (pid); |
5838 | } | |
5839 | break; | |
5840 | } | |
5841 | ||
5842 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5843 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5844 | } | |
5845 | ||
722247f1 YQ |
5846 | /* When the stub wants to tell GDB about a new notification reply, it |
5847 | sends a notification (%Stop, for example). Those can come it at | |
5848 | any time, hence, we have to make sure that any pending | |
5849 | putpkt/getpkt sequence we're making is finished, before querying | |
5850 | the stub for more events with the corresponding ack command | |
5851 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5852 | immediately upon receiving the notification, something like this | |
5853 | could happen: | |
74531fed PA |
5854 | |
5855 | 1.1) --> Hg 1 | |
5856 | 1.2) <-- OK | |
5857 | 1.3) --> g | |
5858 | 1.4) <-- %Stop | |
5859 | 1.5) --> vStopped | |
5860 | 1.6) <-- (registers reply to step #1.3) | |
5861 | ||
5862 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5863 | query. | |
5864 | ||
796cb314 | 5865 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5866 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5867 | doing whatever we were doing: | |
5868 | ||
5869 | 2.1) --> Hg 1 | |
5870 | 2.2) <-- OK | |
5871 | 2.3) --> g | |
5872 | 2.4) <-- %Stop | |
5873 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5874 | 2.5) <-- (registers reply to step #2.3) | |
5875 | ||
5876 | Eventualy after step #2.5, we return to the event loop, which | |
5877 | notices there's an event on the | |
5878 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5879 | associated callback --- the function below. At this point, we're | |
5880 | always safe to start a vStopped sequence. : | |
5881 | ||
5882 | 2.6) --> vStopped | |
5883 | 2.7) <-- T05 thread:2 | |
5884 | 2.8) --> vStopped | |
5885 | 2.9) --> OK | |
5886 | */ | |
5887 | ||
722247f1 YQ |
5888 | void |
5889 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5890 | { |
5891 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5892 | |
f48ff2a7 | 5893 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5894 | { |
722247f1 YQ |
5895 | if (notif_debug) |
5896 | fprintf_unfiltered (gdb_stdlog, | |
5897 | "notif: process: '%s' ack pending event\n", | |
5898 | nc->name); | |
74531fed | 5899 | |
722247f1 | 5900 | /* acknowledge */ |
f48ff2a7 YQ |
5901 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5902 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5903 | |
5904 | while (1) | |
5905 | { | |
5906 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5907 | if (strcmp (rs->buf, "OK") == 0) | |
5908 | break; | |
5909 | else | |
722247f1 | 5910 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5911 | } |
5912 | } | |
722247f1 YQ |
5913 | else |
5914 | { | |
5915 | if (notif_debug) | |
5916 | fprintf_unfiltered (gdb_stdlog, | |
5917 | "notif: process: '%s' no pending reply\n", | |
5918 | nc->name); | |
5919 | } | |
74531fed PA |
5920 | } |
5921 | ||
74531fed PA |
5922 | /* Called when it is decided that STOP_REPLY holds the info of the |
5923 | event that is to be returned to the core. This function always | |
5924 | destroys STOP_REPLY. */ | |
5925 | ||
5926 | static ptid_t | |
5927 | process_stop_reply (struct stop_reply *stop_reply, | |
5928 | struct target_waitstatus *status) | |
5929 | { | |
5930 | ptid_t ptid; | |
5931 | ||
5932 | *status = stop_reply->ws; | |
5933 | ptid = stop_reply->ptid; | |
5934 | ||
5935 | /* If no thread/process was reported by the stub, assume the current | |
5936 | inferior. */ | |
5937 | if (ptid_equal (ptid, null_ptid)) | |
5938 | ptid = inferior_ptid; | |
5939 | ||
5f3563ea PA |
5940 | if (status->kind != TARGET_WAITKIND_EXITED |
5941 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5942 | { |
ee154bee TT |
5943 | struct remote_state *rs = get_remote_state (); |
5944 | ||
5f3563ea PA |
5945 | /* Expedited registers. */ |
5946 | if (stop_reply->regcache) | |
5947 | { | |
217f1f79 | 5948 | struct regcache *regcache |
f5656ead | 5949 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5950 | cached_reg_t *reg; |
5951 | int ix; | |
5952 | ||
5953 | for (ix = 0; | |
5954 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5955 | ix++) | |
217f1f79 | 5956 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5957 | VEC_free (cached_reg_t, stop_reply->regcache); |
5958 | } | |
74531fed | 5959 | |
ee154bee TT |
5960 | rs->remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5961 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5962 | |
5963 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5964 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5965 | } |
5966 | ||
74531fed PA |
5967 | stop_reply_xfree (stop_reply); |
5968 | return ptid; | |
5969 | } | |
5970 | ||
5971 | /* The non-stop mode version of target_wait. */ | |
5972 | ||
5973 | static ptid_t | |
47608cb1 | 5974 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5975 | { |
5976 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5977 | struct stop_reply *stop_reply; |
5978 | int ret; | |
fee9eda9 | 5979 | int is_notif = 0; |
74531fed PA |
5980 | |
5981 | /* If in non-stop mode, get out of getpkt even if a | |
5982 | notification is received. */ | |
5983 | ||
5984 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5985 | 0 /* forever */, &is_notif); |
74531fed PA |
5986 | while (1) |
5987 | { | |
fee9eda9 | 5988 | if (ret != -1 && !is_notif) |
74531fed PA |
5989 | switch (rs->buf[0]) |
5990 | { | |
5991 | case 'E': /* Error of some sort. */ | |
5992 | /* We're out of sync with the target now. Did it continue | |
5993 | or not? We can't tell which thread it was in non-stop, | |
5994 | so just ignore this. */ | |
5995 | warning (_("Remote failure reply: %s"), rs->buf); | |
5996 | break; | |
5997 | case 'O': /* Console output. */ | |
5998 | remote_console_output (rs->buf + 1); | |
5999 | break; | |
6000 | default: | |
6001 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6002 | break; | |
6003 | } | |
6004 | ||
6005 | /* Acknowledge a pending stop reply that may have arrived in the | |
6006 | mean time. */ | |
f48ff2a7 | 6007 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6008 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6009 | |
6010 | /* If indeed we noticed a stop reply, we're done. */ | |
6011 | stop_reply = queued_stop_reply (ptid); | |
6012 | if (stop_reply != NULL) | |
6013 | return process_stop_reply (stop_reply, status); | |
6014 | ||
47608cb1 | 6015 | /* Still no event. If we're just polling for an event, then |
74531fed | 6016 | return to the event loop. */ |
47608cb1 | 6017 | if (options & TARGET_WNOHANG) |
74531fed PA |
6018 | { |
6019 | status->kind = TARGET_WAITKIND_IGNORE; | |
6020 | return minus_one_ptid; | |
6021 | } | |
6022 | ||
47608cb1 | 6023 | /* Otherwise do a blocking wait. */ |
74531fed | 6024 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6025 | 1 /* forever */, &is_notif); |
74531fed PA |
6026 | } |
6027 | } | |
6028 | ||
6029 | /* Wait until the remote machine stops, then return, storing status in | |
6030 | STATUS just as `wait' would. */ | |
6031 | ||
6032 | static ptid_t | |
47608cb1 | 6033 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6034 | { |
6035 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6036 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6037 | char *buf; |
74531fed PA |
6038 | struct stop_reply *stop_reply; |
6039 | ||
47608cb1 PA |
6040 | again: |
6041 | ||
74531fed PA |
6042 | status->kind = TARGET_WAITKIND_IGNORE; |
6043 | status->value.integer = 0; | |
6044 | ||
6045 | stop_reply = queued_stop_reply (ptid); | |
6046 | if (stop_reply != NULL) | |
6047 | return process_stop_reply (stop_reply, status); | |
6048 | ||
6049 | if (rs->cached_wait_status) | |
6050 | /* Use the cached wait status, but only once. */ | |
6051 | rs->cached_wait_status = 0; | |
6052 | else | |
6053 | { | |
6054 | int ret; | |
722247f1 | 6055 | int is_notif; |
74531fed PA |
6056 | |
6057 | if (!target_is_async_p ()) | |
6058 | { | |
934b9bac | 6059 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6060 | /* If the user hit C-c before this packet, or between packets, |
6061 | pretend that it was hit right here. */ | |
522002f9 | 6062 | if (check_quit_flag ()) |
74531fed | 6063 | { |
522002f9 | 6064 | clear_quit_flag (); |
934b9bac | 6065 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6066 | } |
6067 | } | |
6068 | ||
6069 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6070 | _never_ wait for ever -> test on target_is_async_p(). | |
6071 | However, before we do that we need to ensure that the caller | |
6072 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
6073 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
6074 | wait_forever_enabled_p, &is_notif); | |
6075 | ||
5e1b953b SDJ |
6076 | if (!target_is_async_p ()) |
6077 | signal (SIGINT, ofunc); | |
6078 | ||
722247f1 YQ |
6079 | /* GDB gets a notification. Return to core as this event is |
6080 | not interesting. */ | |
6081 | if (ret != -1 && is_notif) | |
6082 | return minus_one_ptid; | |
74531fed PA |
6083 | } |
6084 | ||
6085 | buf = rs->buf; | |
6086 | ||
ee154bee | 6087 | rs->remote_stopped_by_watchpoint_p = 0; |
74531fed PA |
6088 | |
6089 | /* We got something. */ | |
6090 | rs->waiting_for_stop_reply = 0; | |
6091 | ||
3a29589a DJ |
6092 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6093 | an 'F' or 'O' packet. */ | |
6094 | if (buf[0] != 'F' && buf[0] != 'O') | |
6095 | rs->ctrlc_pending_p = 0; | |
6096 | ||
74531fed PA |
6097 | switch (buf[0]) |
6098 | { | |
6099 | case 'E': /* Error of some sort. */ | |
6100 | /* We're out of sync with the target now. Did it continue or | |
6101 | not? Not is more likely, so report a stop. */ | |
6102 | warning (_("Remote failure reply: %s"), buf); | |
6103 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6104 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6105 | break; |
6106 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6107 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6108 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6109 | break; |
6110 | case 'T': case 'S': case 'X': case 'W': | |
6111 | { | |
722247f1 YQ |
6112 | struct stop_reply *stop_reply |
6113 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6114 | rs->buf); | |
74531fed | 6115 | |
74531fed | 6116 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6117 | break; |
6118 | } | |
6119 | case 'O': /* Console output. */ | |
6120 | remote_console_output (buf + 1); | |
e24a49d8 | 6121 | |
c8e38a49 PA |
6122 | /* The target didn't really stop; keep waiting. */ |
6123 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6124 | |
c8e38a49 PA |
6125 | break; |
6126 | case '\0': | |
b73be471 | 6127 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6128 | { |
6129 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6130 | remote system doesn't support it. */ | |
6131 | target_terminal_ours_for_output (); | |
6132 | printf_filtered | |
6133 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6134 | gdb_signal_to_name (rs->last_sent_signal)); |
6135 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6136 | target_terminal_inferior (); |
6137 | ||
280ceea3 | 6138 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6139 | putpkt ((char *) buf); |
6140 | ||
6141 | /* We just told the target to resume, so a stop reply is in | |
6142 | order. */ | |
e24a49d8 | 6143 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6144 | break; |
43ff13b4 | 6145 | } |
c8e38a49 PA |
6146 | /* else fallthrough */ |
6147 | default: | |
6148 | warning (_("Invalid remote reply: %s"), buf); | |
6149 | /* Keep waiting. */ | |
6150 | rs->waiting_for_stop_reply = 1; | |
6151 | break; | |
43ff13b4 | 6152 | } |
c8e38a49 | 6153 | |
c8e38a49 | 6154 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6155 | { |
6156 | /* Nothing interesting happened. If we're doing a non-blocking | |
6157 | poll, we're done. Otherwise, go back to waiting. */ | |
6158 | if (options & TARGET_WNOHANG) | |
6159 | return minus_one_ptid; | |
6160 | else | |
6161 | goto again; | |
6162 | } | |
74531fed PA |
6163 | else if (status->kind != TARGET_WAITKIND_EXITED |
6164 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6165 | { |
6166 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6167 | record_currthread (rs, event_ptid); |
82f73884 PA |
6168 | else |
6169 | event_ptid = inferior_ptid; | |
43ff13b4 | 6170 | } |
74531fed PA |
6171 | else |
6172 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6173 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6174 | |
82f73884 | 6175 | return event_ptid; |
43ff13b4 JM |
6176 | } |
6177 | ||
74531fed PA |
6178 | /* Wait until the remote machine stops, then return, storing status in |
6179 | STATUS just as `wait' would. */ | |
6180 | ||
c8e38a49 | 6181 | static ptid_t |
117de6a9 | 6182 | remote_wait (struct target_ops *ops, |
47608cb1 | 6183 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6184 | { |
6185 | ptid_t event_ptid; | |
6186 | ||
74531fed | 6187 | if (non_stop) |
47608cb1 | 6188 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6189 | else |
47608cb1 | 6190 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6191 | |
74531fed | 6192 | if (target_can_async_p ()) |
c8e38a49 | 6193 | { |
74531fed PA |
6194 | /* If there are are events left in the queue tell the event loop |
6195 | to return here. */ | |
722247f1 | 6196 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6197 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6198 | } |
c8e38a49 PA |
6199 | |
6200 | return event_ptid; | |
6201 | } | |
6202 | ||
74ca34ce | 6203 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6204 | |
b96ec7ac | 6205 | static int |
56be3814 | 6206 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6207 | { |
6208 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6209 | char *buf, *p; |
b96ec7ac AC |
6210 | char regp[MAX_REGISTER_SIZE]; |
6211 | int i; | |
6212 | ||
74ca34ce DJ |
6213 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
6214 | return 0; | |
6215 | ||
6216 | if (reg->pnum == -1) | |
6217 | return 0; | |
6218 | ||
2e9f7625 | 6219 | p = rs->buf; |
fcad0fa4 | 6220 | *p++ = 'p'; |
74ca34ce | 6221 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6222 | *p++ = '\0'; |
1f4437a4 MS |
6223 | putpkt (rs->buf); |
6224 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6225 | |
2e9f7625 DJ |
6226 | buf = rs->buf; |
6227 | ||
74ca34ce DJ |
6228 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6229 | { | |
6230 | case PACKET_OK: | |
6231 | break; | |
6232 | case PACKET_UNKNOWN: | |
6233 | return 0; | |
6234 | case PACKET_ERROR: | |
27a9c0bf MS |
6235 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6236 | gdbarch_register_name (get_regcache_arch (regcache), | |
6237 | reg->regnum), | |
6238 | buf); | |
74ca34ce | 6239 | } |
3f9a994c JB |
6240 | |
6241 | /* If this register is unfetchable, tell the regcache. */ | |
6242 | if (buf[0] == 'x') | |
8480adf2 | 6243 | { |
56be3814 | 6244 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6245 | return 1; |
b96ec7ac | 6246 | } |
b96ec7ac | 6247 | |
3f9a994c JB |
6248 | /* Otherwise, parse and supply the value. */ |
6249 | p = buf; | |
6250 | i = 0; | |
6251 | while (p[0] != 0) | |
6252 | { | |
6253 | if (p[1] == 0) | |
74ca34ce | 6254 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6255 | |
6256 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6257 | p += 2; | |
6258 | } | |
56be3814 | 6259 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6260 | return 1; |
b96ec7ac AC |
6261 | } |
6262 | ||
74ca34ce DJ |
6263 | /* Fetch the registers included in the target's 'g' packet. */ |
6264 | ||
29709017 DJ |
6265 | static int |
6266 | send_g_packet (void) | |
c906108c | 6267 | { |
d01949b6 | 6268 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6269 | int buf_len; |
c906108c | 6270 | |
bba74b36 | 6271 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6272 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6273 | |
29709017 DJ |
6274 | /* We can get out of synch in various cases. If the first character |
6275 | in the buffer is not a hex character, assume that has happened | |
6276 | and try to fetch another packet to read. */ | |
6277 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6278 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6279 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6280 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6281 | { | |
6282 | if (remote_debug) | |
6283 | fprintf_unfiltered (gdb_stdlog, | |
6284 | "Bad register packet; fetching a new packet\n"); | |
6285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6286 | } | |
6287 | ||
74ca34ce DJ |
6288 | buf_len = strlen (rs->buf); |
6289 | ||
6290 | /* Sanity check the received packet. */ | |
6291 | if (buf_len % 2 != 0) | |
6292 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6293 | |
6294 | return buf_len / 2; | |
6295 | } | |
6296 | ||
6297 | static void | |
56be3814 | 6298 | process_g_packet (struct regcache *regcache) |
29709017 | 6299 | { |
4a22f64d | 6300 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6301 | struct remote_state *rs = get_remote_state (); |
6302 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6303 | int i, buf_len; | |
6304 | char *p; | |
6305 | char *regs; | |
6306 | ||
6307 | buf_len = strlen (rs->buf); | |
6308 | ||
6309 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6310 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6311 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6312 | ||
6313 | /* Save the size of the packet sent to us by the target. It is used | |
6314 | as a heuristic when determining the max size of packets that the | |
6315 | target can safely receive. */ | |
6316 | if (rsa->actual_register_packet_size == 0) | |
6317 | rsa->actual_register_packet_size = buf_len; | |
6318 | ||
6319 | /* If this is smaller than we guessed the 'g' packet would be, | |
6320 | update our records. A 'g' reply that doesn't include a register's | |
6321 | value implies either that the register is not available, or that | |
6322 | the 'p' packet must be used. */ | |
6323 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6324 | { |
74ca34ce DJ |
6325 | rsa->sizeof_g_packet = buf_len / 2; |
6326 | ||
4a22f64d | 6327 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6328 | { |
74ca34ce DJ |
6329 | if (rsa->regs[i].pnum == -1) |
6330 | continue; | |
6331 | ||
6332 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6333 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6334 | else |
74ca34ce | 6335 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6336 | } |
74ca34ce | 6337 | } |
b323314b | 6338 | |
74ca34ce | 6339 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6340 | |
6341 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6342 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6343 | |
c906108c SS |
6344 | /* Reply describes registers byte by byte, each byte encoded as two |
6345 | hex characters. Suck them all up, then supply them to the | |
6346 | register cacheing/storage mechanism. */ | |
6347 | ||
74ca34ce | 6348 | p = rs->buf; |
ea9c271d | 6349 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6350 | { |
74ca34ce DJ |
6351 | if (p[0] == 0 || p[1] == 0) |
6352 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6353 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6354 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6355 | |
c906108c | 6356 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6357 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6358 | else |
6359 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6360 | p += 2; | |
6361 | } | |
6362 | ||
a744cf53 MS |
6363 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6364 | { | |
6365 | struct packet_reg *r = &rsa->regs[i]; | |
6366 | ||
6367 | if (r->in_g_packet) | |
6368 | { | |
6369 | if (r->offset * 2 >= strlen (rs->buf)) | |
6370 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6371 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6372 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6373 | else if (rs->buf[r->offset * 2] == 'x') |
6374 | { | |
6375 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6376 | /* The register isn't available, mark it as such (at | |
6377 | the same time setting the value to zero). */ | |
6378 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6379 | } | |
6380 | else | |
6381 | regcache_raw_supply (regcache, r->regnum, | |
6382 | regs + r->offset); | |
6383 | } | |
6384 | } | |
c906108c SS |
6385 | } |
6386 | ||
29709017 | 6387 | static void |
56be3814 | 6388 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6389 | { |
6390 | send_g_packet (); | |
56be3814 | 6391 | process_g_packet (regcache); |
29709017 DJ |
6392 | } |
6393 | ||
e6e4e701 PA |
6394 | /* Make the remote selected traceframe match GDB's selected |
6395 | traceframe. */ | |
6396 | ||
6397 | static void | |
6398 | set_remote_traceframe (void) | |
6399 | { | |
6400 | int newnum; | |
262e1174 | 6401 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6402 | |
262e1174 | 6403 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6404 | return; |
6405 | ||
6406 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6407 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6408 | |
6409 | newnum = target_trace_find (tfind_number, | |
6410 | get_traceframe_number (), 0, 0, NULL); | |
6411 | ||
6412 | /* Should not happen. If it does, all bets are off. */ | |
6413 | if (newnum != get_traceframe_number ()) | |
6414 | warning (_("could not set remote traceframe")); | |
6415 | } | |
6416 | ||
74ca34ce | 6417 | static void |
28439f5e PA |
6418 | remote_fetch_registers (struct target_ops *ops, |
6419 | struct regcache *regcache, int regnum) | |
74ca34ce | 6420 | { |
74ca34ce DJ |
6421 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6422 | int i; | |
6423 | ||
e6e4e701 | 6424 | set_remote_traceframe (); |
79d7f229 | 6425 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6426 | |
6427 | if (regnum >= 0) | |
6428 | { | |
6429 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6430 | |
74ca34ce DJ |
6431 | gdb_assert (reg != NULL); |
6432 | ||
6433 | /* If this register might be in the 'g' packet, try that first - | |
6434 | we are likely to read more than one register. If this is the | |
6435 | first 'g' packet, we might be overly optimistic about its | |
6436 | contents, so fall back to 'p'. */ | |
6437 | if (reg->in_g_packet) | |
6438 | { | |
56be3814 | 6439 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6440 | if (reg->in_g_packet) |
6441 | return; | |
6442 | } | |
6443 | ||
56be3814 | 6444 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6445 | return; |
6446 | ||
6447 | /* This register is not available. */ | |
56be3814 | 6448 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6449 | |
6450 | return; | |
6451 | } | |
6452 | ||
56be3814 | 6453 | fetch_registers_using_g (regcache); |
74ca34ce | 6454 | |
4a22f64d | 6455 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6456 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6457 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6458 | { |
6459 | /* This register is not available. */ | |
56be3814 | 6460 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6461 | } |
6462 | } | |
6463 | ||
c906108c SS |
6464 | /* Prepare to store registers. Since we may send them all (using a |
6465 | 'G' request), we have to read out the ones we don't want to change | |
6466 | first. */ | |
6467 | ||
c5aa993b | 6468 | static void |
316f2060 | 6469 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 6470 | { |
ea9c271d | 6471 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6472 | int i; |
cfd77fa1 | 6473 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6474 | |
c906108c | 6475 | /* Make sure the entire registers array is valid. */ |
444abaca | 6476 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6477 | { |
6478 | case PACKET_DISABLE: | |
6479 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6480 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6481 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6482 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6483 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6484 | break; |
6485 | case PACKET_ENABLE: | |
6486 | break; | |
6487 | } | |
6488 | } | |
6489 | ||
ad10f812 | 6490 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6491 | packet was not recognized. */ |
5a2468f5 JM |
6492 | |
6493 | static int | |
1f4437a4 MS |
6494 | store_register_using_P (const struct regcache *regcache, |
6495 | struct packet_reg *reg) | |
5a2468f5 | 6496 | { |
4a22f64d | 6497 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6498 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6499 | /* Try storing a single register. */ |
6d820c5c | 6500 | char *buf = rs->buf; |
cfd77fa1 | 6501 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6502 | char *p; |
5a2468f5 | 6503 | |
74ca34ce DJ |
6504 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6505 | return 0; | |
6506 | ||
6507 | if (reg->pnum == -1) | |
6508 | return 0; | |
6509 | ||
ea9c271d | 6510 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6511 | p = buf + strlen (buf); |
56be3814 | 6512 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6513 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6514 | putpkt (rs->buf); |
6515 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6516 | |
74ca34ce DJ |
6517 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6518 | { | |
6519 | case PACKET_OK: | |
6520 | return 1; | |
6521 | case PACKET_ERROR: | |
27a9c0bf MS |
6522 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6523 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6524 | case PACKET_UNKNOWN: |
6525 | return 0; | |
6526 | default: | |
6527 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6528 | } | |
c906108c SS |
6529 | } |
6530 | ||
23860348 MS |
6531 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6532 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6533 | |
6534 | static void | |
56be3814 | 6535 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6536 | { |
d01949b6 | 6537 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6538 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6539 | gdb_byte *regs; |
c906108c SS |
6540 | char *p; |
6541 | ||
193cb69f AC |
6542 | /* Extract all the registers in the regcache copying them into a |
6543 | local buffer. */ | |
6544 | { | |
b323314b | 6545 | int i; |
a744cf53 | 6546 | |
ea9c271d DJ |
6547 | regs = alloca (rsa->sizeof_g_packet); |
6548 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6549 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6550 | { |
ea9c271d | 6551 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6552 | |
b323314b | 6553 | if (r->in_g_packet) |
56be3814 | 6554 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6555 | } |
6556 | } | |
c906108c SS |
6557 | |
6558 | /* Command describes registers byte by byte, | |
6559 | each byte encoded as two hex characters. */ | |
6d820c5c | 6560 | p = rs->buf; |
193cb69f | 6561 | *p++ = 'G'; |
74ca34ce DJ |
6562 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6563 | updated. */ | |
6564 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6565 | putpkt (rs->buf); |
6566 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6567 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6568 | error (_("Could not write registers; remote failure reply '%s'"), |
6569 | rs->buf); | |
c906108c | 6570 | } |
74ca34ce DJ |
6571 | |
6572 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6573 | of the register cache buffer. FIXME: ignores errors. */ | |
6574 | ||
6575 | static void | |
28439f5e PA |
6576 | remote_store_registers (struct target_ops *ops, |
6577 | struct regcache *regcache, int regnum) | |
74ca34ce | 6578 | { |
74ca34ce DJ |
6579 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6580 | int i; | |
6581 | ||
e6e4e701 | 6582 | set_remote_traceframe (); |
79d7f229 | 6583 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6584 | |
6585 | if (regnum >= 0) | |
6586 | { | |
6587 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6588 | |
74ca34ce DJ |
6589 | gdb_assert (reg != NULL); |
6590 | ||
6591 | /* Always prefer to store registers using the 'P' packet if | |
6592 | possible; we often change only a small number of registers. | |
6593 | Sometimes we change a larger number; we'd need help from a | |
6594 | higher layer to know to use 'G'. */ | |
56be3814 | 6595 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6596 | return; |
6597 | ||
6598 | /* For now, don't complain if we have no way to write the | |
6599 | register. GDB loses track of unavailable registers too | |
6600 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6601 | any way to read the register, either... */ |
74ca34ce DJ |
6602 | if (!reg->in_g_packet) |
6603 | return; | |
6604 | ||
56be3814 | 6605 | store_registers_using_G (regcache); |
74ca34ce DJ |
6606 | return; |
6607 | } | |
6608 | ||
56be3814 | 6609 | store_registers_using_G (regcache); |
74ca34ce | 6610 | |
4a22f64d | 6611 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6612 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6613 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6614 | /* See above for why we do not issue an error here. */ |
6615 | continue; | |
6616 | } | |
c906108c SS |
6617 | \f |
6618 | ||
6619 | /* Return the number of hex digits in num. */ | |
6620 | ||
6621 | static int | |
fba45db2 | 6622 | hexnumlen (ULONGEST num) |
c906108c SS |
6623 | { |
6624 | int i; | |
6625 | ||
6626 | for (i = 0; num != 0; i++) | |
6627 | num >>= 4; | |
6628 | ||
6629 | return max (i, 1); | |
6630 | } | |
6631 | ||
2df3850c | 6632 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6633 | |
6634 | static int | |
fba45db2 | 6635 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6636 | { |
c906108c | 6637 | int len = hexnumlen (num); |
a744cf53 | 6638 | |
2df3850c JM |
6639 | return hexnumnstr (buf, num, len); |
6640 | } | |
6641 | ||
c906108c | 6642 | |
2df3850c | 6643 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6644 | |
2df3850c | 6645 | static int |
fba45db2 | 6646 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6647 | { |
6648 | int i; | |
6649 | ||
6650 | buf[width] = '\0'; | |
6651 | ||
6652 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6653 | { |
c5aa993b | 6654 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6655 | num >>= 4; |
6656 | } | |
6657 | ||
2df3850c | 6658 | return width; |
c906108c SS |
6659 | } |
6660 | ||
23860348 | 6661 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6662 | |
6663 | static CORE_ADDR | |
fba45db2 | 6664 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6665 | { |
883b9c6c | 6666 | unsigned int address_size = remote_address_size; |
a744cf53 | 6667 | |
911c95a5 UW |
6668 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6669 | if (!address_size) | |
f5656ead | 6670 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6671 | |
6672 | if (address_size > 0 | |
6673 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6674 | { |
6675 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6676 | in a ULONGEST variable. */ |
c906108c | 6677 | ULONGEST mask = 1; |
a744cf53 | 6678 | |
911c95a5 | 6679 | mask = (mask << address_size) - 1; |
c906108c SS |
6680 | addr &= mask; |
6681 | } | |
6682 | return addr; | |
6683 | } | |
6684 | ||
a31ea83d DJ |
6685 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6686 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6687 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6688 | (which may be more than *OUT_LEN due to escape characters). The | |
6689 | total number of bytes in the output buffer will be at most | |
6690 | OUT_MAXLEN. */ | |
6691 | ||
6692 | static int | |
6693 | remote_escape_output (const gdb_byte *buffer, int len, | |
6694 | gdb_byte *out_buf, int *out_len, | |
6695 | int out_maxlen) | |
6696 | { | |
6697 | int input_index, output_index; | |
6698 | ||
6699 | output_index = 0; | |
6700 | for (input_index = 0; input_index < len; input_index++) | |
6701 | { | |
6702 | gdb_byte b = buffer[input_index]; | |
6703 | ||
6704 | if (b == '$' || b == '#' || b == '}') | |
6705 | { | |
6706 | /* These must be escaped. */ | |
6707 | if (output_index + 2 > out_maxlen) | |
6708 | break; | |
6709 | out_buf[output_index++] = '}'; | |
6710 | out_buf[output_index++] = b ^ 0x20; | |
6711 | } | |
6712 | else | |
6713 | { | |
6714 | if (output_index + 1 > out_maxlen) | |
6715 | break; | |
6716 | out_buf[output_index++] = b; | |
6717 | } | |
6718 | } | |
6719 | ||
6720 | *out_len = input_index; | |
6721 | return output_index; | |
6722 | } | |
6723 | ||
0876f84a DJ |
6724 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6725 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6726 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6727 | ||
6728 | This function reverses remote_escape_output. It allows more | |
6729 | escaped characters than that function does, in particular because | |
6730 | '*' must be escaped to avoid the run-length encoding processing | |
6731 | in reading packets. */ | |
6732 | ||
6733 | static int | |
6734 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6735 | gdb_byte *out_buf, int out_maxlen) | |
6736 | { | |
6737 | int input_index, output_index; | |
6738 | int escaped; | |
6739 | ||
6740 | output_index = 0; | |
6741 | escaped = 0; | |
6742 | for (input_index = 0; input_index < len; input_index++) | |
6743 | { | |
6744 | gdb_byte b = buffer[input_index]; | |
6745 | ||
6746 | if (output_index + 1 > out_maxlen) | |
6747 | { | |
6748 | warning (_("Received too much data from remote target;" | |
6749 | " ignoring overflow.")); | |
6750 | return output_index; | |
6751 | } | |
6752 | ||
6753 | if (escaped) | |
6754 | { | |
6755 | out_buf[output_index++] = b ^ 0x20; | |
6756 | escaped = 0; | |
6757 | } | |
6758 | else if (b == '}') | |
6759 | escaped = 1; | |
6760 | else | |
6761 | out_buf[output_index++] = b; | |
6762 | } | |
6763 | ||
6764 | if (escaped) | |
6765 | error (_("Unmatched escape character in target response.")); | |
6766 | ||
6767 | return output_index; | |
6768 | } | |
6769 | ||
c906108c SS |
6770 | /* Determine whether the remote target supports binary downloading. |
6771 | This is accomplished by sending a no-op memory write of zero length | |
6772 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6773 | the whole packet, since many stubs strip the eighth bit and |
6774 | subsequently compute a wrong checksum, which causes real havoc with | |
6775 | remote_write_bytes. | |
7a292a7a | 6776 | |
96baa820 | 6777 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6778 | clean. In cases like this, the user should clear "remote |
23860348 | 6779 | X-packet". */ |
96baa820 | 6780 | |
c906108c | 6781 | static void |
fba45db2 | 6782 | check_binary_download (CORE_ADDR addr) |
c906108c | 6783 | { |
d01949b6 | 6784 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6785 | |
444abaca | 6786 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6787 | { |
96baa820 JM |
6788 | case PACKET_DISABLE: |
6789 | break; | |
6790 | case PACKET_ENABLE: | |
6791 | break; | |
6792 | case PACKET_SUPPORT_UNKNOWN: | |
6793 | { | |
96baa820 | 6794 | char *p; |
802188a7 | 6795 | |
2e9f7625 | 6796 | p = rs->buf; |
96baa820 JM |
6797 | *p++ = 'X'; |
6798 | p += hexnumstr (p, (ULONGEST) addr); | |
6799 | *p++ = ','; | |
6800 | p += hexnumstr (p, (ULONGEST) 0); | |
6801 | *p++ = ':'; | |
6802 | *p = '\0'; | |
802188a7 | 6803 | |
2e9f7625 | 6804 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6805 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6806 | |
2e9f7625 | 6807 | if (rs->buf[0] == '\0') |
96baa820 JM |
6808 | { |
6809 | if (remote_debug) | |
6810 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6811 | "binary downloading NOT " |
6812 | "supported by target\n"); | |
444abaca | 6813 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6814 | } |
6815 | else | |
6816 | { | |
6817 | if (remote_debug) | |
6818 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6819 | "binary downloading supported by target\n"); |
444abaca | 6820 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6821 | } |
6822 | break; | |
6823 | } | |
c906108c SS |
6824 | } |
6825 | } | |
6826 | ||
6827 | /* Write memory data directly to the remote machine. | |
6828 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6829 | HEADER is the starting part of the packet. |
c906108c SS |
6830 | MEMADDR is the address in the remote memory space. |
6831 | MYADDR is the address of the buffer in our space. | |
6832 | LEN is the number of bytes. | |
a76d924d DJ |
6833 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6834 | should send data as binary ('X'), or hex-encoded ('M'). | |
6835 | ||
6836 | The function creates packet of the form | |
6837 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6838 | ||
6839 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6840 | ||
6841 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6842 | are omitted. | |
6843 | ||
00d84524 PA |
6844 | Returns the number of bytes transferred, or a negative value (an |
6845 | 'enum target_xfer_error' value) for error. Only transfer a single | |
6846 | packet. */ | |
c906108c | 6847 | |
00d84524 | 6848 | static LONGEST |
a76d924d | 6849 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
45aa4659 | 6850 | const gdb_byte *myaddr, ssize_t len, |
a76d924d | 6851 | char packet_format, int use_length) |
c906108c | 6852 | { |
6d820c5c | 6853 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6854 | char *p; |
a76d924d DJ |
6855 | char *plen = NULL; |
6856 | int plenlen = 0; | |
917317f4 JM |
6857 | int todo; |
6858 | int nr_bytes; | |
a257b5bb | 6859 | int payload_size; |
6765f3e5 | 6860 | int payload_length; |
a76d924d DJ |
6861 | int header_length; |
6862 | ||
6863 | if (packet_format != 'X' && packet_format != 'M') | |
6864 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6865 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6866 | |
b2182ed2 DJ |
6867 | if (len <= 0) |
6868 | return 0; | |
6869 | ||
3de11b2e | 6870 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6871 | |
6d820c5c DJ |
6872 | /* The packet buffer will be large enough for the payload; |
6873 | get_memory_packet_size ensures this. */ | |
a76d924d | 6874 | rs->buf[0] = '\0'; |
c906108c | 6875 | |
a257b5bb | 6876 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6877 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6878 | ||
a76d924d DJ |
6879 | payload_size -= strlen ("$,:#NN"); |
6880 | if (!use_length) | |
0df8b418 | 6881 | /* The comma won't be used. */ |
a76d924d DJ |
6882 | payload_size += 1; |
6883 | header_length = strlen (header); | |
6884 | payload_size -= header_length; | |
3de11b2e | 6885 | payload_size -= hexnumlen (memaddr); |
c906108c | 6886 | |
a76d924d | 6887 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6888 | |
a76d924d DJ |
6889 | strcat (rs->buf, header); |
6890 | p = rs->buf + strlen (header); | |
6891 | ||
6892 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6893 | if (packet_format == 'X') | |
c906108c | 6894 | { |
23860348 | 6895 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6896 | todo = min (len, payload_size); |
a76d924d DJ |
6897 | if (use_length) |
6898 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6899 | todo = min (todo, payload_size); |
a76d924d DJ |
6900 | } |
6901 | else | |
6902 | { | |
23860348 | 6903 | /* Num bytes that will fit. */ |
a257b5bb | 6904 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6905 | if (use_length) |
6906 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6907 | todo = min (todo, payload_size / 2); |
917317f4 | 6908 | } |
a76d924d | 6909 | |
3de11b2e NS |
6910 | if (todo <= 0) |
6911 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6912 | _("minimum packet size too small to write data")); |
802188a7 | 6913 | |
6765f3e5 DJ |
6914 | /* If we already need another packet, then try to align the end |
6915 | of this packet to a useful boundary. */ | |
6916 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6917 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6918 | ||
a257b5bb | 6919 | /* Append "<memaddr>". */ |
917317f4 JM |
6920 | memaddr = remote_address_masked (memaddr); |
6921 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6922 | |
a76d924d DJ |
6923 | if (use_length) |
6924 | { | |
6925 | /* Append ",". */ | |
6926 | *p++ = ','; | |
802188a7 | 6927 | |
a76d924d DJ |
6928 | /* Append <len>. Retain the location/size of <len>. It may need to |
6929 | be adjusted once the packet body has been created. */ | |
6930 | plen = p; | |
6931 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6932 | p += plenlen; | |
6933 | } | |
a257b5bb AC |
6934 | |
6935 | /* Append ":". */ | |
917317f4 JM |
6936 | *p++ = ':'; |
6937 | *p = '\0'; | |
802188a7 | 6938 | |
a257b5bb | 6939 | /* Append the packet body. */ |
a76d924d | 6940 | if (packet_format == 'X') |
917317f4 | 6941 | { |
917317f4 JM |
6942 | /* Binary mode. Send target system values byte by byte, in |
6943 | increasing byte addresses. Only escape certain critical | |
6944 | characters. */ | |
bc20a4af PA |
6945 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6946 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6947 | |
6948 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6949 | a second try to keep the end of the packet aligned. Don't do |
6950 | this if the packet is tiny. */ | |
6951 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6952 | { |
6953 | int new_nr_bytes; | |
6954 | ||
6955 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6956 | - memaddr); | |
6957 | if (new_nr_bytes != nr_bytes) | |
6958 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6959 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6960 | payload_size); |
6961 | } | |
6962 | ||
6963 | p += payload_length; | |
a76d924d | 6964 | if (use_length && nr_bytes < todo) |
c906108c | 6965 | { |
802188a7 | 6966 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6967 | and we have actually sent fewer bytes than planned. |
6968 | Fix-up the length field of the packet. Use the same | |
6969 | number of characters as before. */ | |
917317f4 JM |
6970 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6971 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6972 | } |
a76d924d DJ |
6973 | } |
6974 | else | |
6975 | { | |
917317f4 JM |
6976 | /* Normal mode: Send target system values byte by byte, in |
6977 | increasing byte addresses. Each byte is encoded as a two hex | |
6978 | value. */ | |
2644f393 | 6979 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6980 | p += 2 * nr_bytes; |
c906108c | 6981 | } |
802188a7 | 6982 | |
2e9f7625 | 6983 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6984 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6985 | |
2e9f7625 | 6986 | if (rs->buf[0] == 'E') |
00d84524 | 6987 | return TARGET_XFER_E_IO; |
802188a7 | 6988 | |
23860348 MS |
6989 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6990 | fewer bytes than we'd planned. */ | |
917317f4 | 6991 | return nr_bytes; |
c906108c SS |
6992 | } |
6993 | ||
a76d924d DJ |
6994 | /* Write memory data directly to the remote machine. |
6995 | This does not inform the data cache; the data cache uses this. | |
6996 | MEMADDR is the address in the remote memory space. | |
6997 | MYADDR is the address of the buffer in our space. | |
6998 | LEN is the number of bytes. | |
6999 | ||
00d84524 PA |
7000 | Returns number of bytes transferred, or a negative value (an 'enum |
7001 | target_xfer_error' value) for error. Only transfer a single | |
7002 | packet. */ | |
a76d924d | 7003 | |
00d84524 | 7004 | static LONGEST |
45aa4659 | 7005 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
a76d924d DJ |
7006 | { |
7007 | char *packet_format = 0; | |
7008 | ||
7009 | /* Check whether the target supports binary download. */ | |
7010 | check_binary_download (memaddr); | |
7011 | ||
7012 | switch (remote_protocol_packets[PACKET_X].support) | |
7013 | { | |
7014 | case PACKET_ENABLE: | |
7015 | packet_format = "X"; | |
7016 | break; | |
7017 | case PACKET_DISABLE: | |
7018 | packet_format = "M"; | |
7019 | break; | |
7020 | case PACKET_SUPPORT_UNKNOWN: | |
7021 | internal_error (__FILE__, __LINE__, | |
7022 | _("remote_write_bytes: bad internal state")); | |
7023 | default: | |
7024 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7025 | } | |
7026 | ||
7027 | return remote_write_bytes_aux (packet_format, | |
7028 | memaddr, myaddr, len, packet_format[0], 1); | |
7029 | } | |
7030 | ||
c906108c SS |
7031 | /* Read memory data directly from the remote machine. |
7032 | This does not use the data cache; the data cache uses this. | |
7033 | MEMADDR is the address in the remote memory space. | |
7034 | MYADDR is the address of the buffer in our space. | |
7035 | LEN is the number of bytes. | |
7036 | ||
00d84524 PA |
7037 | Returns number of bytes transferred, or a negative value (an 'enum |
7038 | target_xfer_error' value) for error. */ | |
c906108c | 7039 | |
00d84524 | 7040 | static LONGEST |
cfd77fa1 | 7041 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 7042 | { |
6d820c5c | 7043 | struct remote_state *rs = get_remote_state (); |
23860348 | 7044 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
7045 | char *p; |
7046 | int todo; | |
7047 | int i; | |
c906108c | 7048 | |
b2182ed2 DJ |
7049 | if (len <= 0) |
7050 | return 0; | |
7051 | ||
11cf8741 | 7052 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
7053 | /* The packet buffer will be large enough for the payload; |
7054 | get_memory_packet_size ensures this. */ | |
c906108c | 7055 | |
f7605bc2 PA |
7056 | /* Number if bytes that will fit. */ |
7057 | todo = min (len, max_buf_size / 2); | |
c906108c | 7058 | |
f7605bc2 PA |
7059 | /* Construct "m"<memaddr>","<len>". */ |
7060 | memaddr = remote_address_masked (memaddr); | |
7061 | p = rs->buf; | |
7062 | *p++ = 'm'; | |
7063 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7064 | *p++ = ','; | |
7065 | p += hexnumstr (p, (ULONGEST) todo); | |
7066 | *p = '\0'; | |
7067 | putpkt (rs->buf); | |
7068 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7069 | if (rs->buf[0] == 'E' | |
7070 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7071 | && rs->buf[3] == '\0') | |
00d84524 | 7072 | return TARGET_XFER_E_IO; |
f7605bc2 PA |
7073 | /* Reply describes memory byte by byte, each byte encoded as two hex |
7074 | characters. */ | |
7075 | p = rs->buf; | |
7076 | i = hex2bin (p, myaddr, todo); | |
7077 | /* Return what we have. Let higher layers handle partial reads. */ | |
7078 | return i; | |
c906108c | 7079 | } |
74531fed | 7080 | |
c906108c | 7081 | \f |
c906108c | 7082 | |
a76d924d DJ |
7083 | /* Sends a packet with content determined by the printf format string |
7084 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7085 | whether the packet was a success, a failure, or unknown. */ | |
7086 | ||
2c0b251b | 7087 | static enum packet_result |
a76d924d DJ |
7088 | remote_send_printf (const char *format, ...) |
7089 | { | |
7090 | struct remote_state *rs = get_remote_state (); | |
7091 | int max_size = get_remote_packet_size (); | |
a76d924d | 7092 | va_list ap; |
a744cf53 | 7093 | |
a76d924d DJ |
7094 | va_start (ap, format); |
7095 | ||
7096 | rs->buf[0] = '\0'; | |
7097 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7098 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7099 | |
7100 | if (putpkt (rs->buf) < 0) | |
7101 | error (_("Communication problem with target.")); | |
7102 | ||
7103 | rs->buf[0] = '\0'; | |
7104 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7105 | ||
7106 | return packet_check_result (rs->buf); | |
7107 | } | |
7108 | ||
7109 | static void | |
7110 | restore_remote_timeout (void *p) | |
7111 | { | |
7112 | int value = *(int *)p; | |
a744cf53 | 7113 | |
a76d924d DJ |
7114 | remote_timeout = value; |
7115 | } | |
7116 | ||
7117 | /* Flash writing can take quite some time. We'll set | |
7118 | effectively infinite timeout for flash operations. | |
7119 | In future, we'll need to decide on a better approach. */ | |
7120 | static const int remote_flash_timeout = 1000; | |
7121 | ||
7122 | static void | |
7123 | remote_flash_erase (struct target_ops *ops, | |
7124 | ULONGEST address, LONGEST length) | |
7125 | { | |
f5656ead | 7126 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7127 | int saved_remote_timeout = remote_timeout; |
7128 | enum packet_result ret; | |
a76d924d DJ |
7129 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7130 | &saved_remote_timeout); | |
a744cf53 | 7131 | |
a76d924d DJ |
7132 | remote_timeout = remote_flash_timeout; |
7133 | ||
7134 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7135 | phex (address, addr_size), |
a76d924d DJ |
7136 | phex (length, 4)); |
7137 | switch (ret) | |
7138 | { | |
7139 | case PACKET_UNKNOWN: | |
7140 | error (_("Remote target does not support flash erase")); | |
7141 | case PACKET_ERROR: | |
7142 | error (_("Error erasing flash with vFlashErase packet")); | |
7143 | default: | |
7144 | break; | |
7145 | } | |
7146 | ||
7147 | do_cleanups (back_to); | |
7148 | } | |
7149 | ||
7150 | static LONGEST | |
7151 | remote_flash_write (struct target_ops *ops, | |
7152 | ULONGEST address, LONGEST length, | |
7153 | const gdb_byte *data) | |
7154 | { | |
7155 | int saved_remote_timeout = remote_timeout; | |
00d84524 | 7156 | LONGEST ret; |
a76d924d DJ |
7157 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7158 | &saved_remote_timeout); | |
7159 | ||
7160 | remote_timeout = remote_flash_timeout; | |
7161 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
7162 | do_cleanups (back_to); | |
7163 | ||
7164 | return ret; | |
7165 | } | |
7166 | ||
7167 | static void | |
7168 | remote_flash_done (struct target_ops *ops) | |
7169 | { | |
7170 | int saved_remote_timeout = remote_timeout; | |
7171 | int ret; | |
7172 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7173 | &saved_remote_timeout); | |
7174 | ||
7175 | remote_timeout = remote_flash_timeout; | |
7176 | ret = remote_send_printf ("vFlashDone"); | |
7177 | do_cleanups (back_to); | |
7178 | ||
7179 | switch (ret) | |
7180 | { | |
7181 | case PACKET_UNKNOWN: | |
7182 | error (_("Remote target does not support vFlashDone")); | |
7183 | case PACKET_ERROR: | |
7184 | error (_("Error finishing flash operation")); | |
7185 | default: | |
7186 | break; | |
7187 | } | |
7188 | } | |
7189 | ||
c906108c | 7190 | static void |
fba45db2 | 7191 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7192 | { |
7193 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7194 | } | |
7195 | \f | |
7196 | /* Stuff for dealing with the packets which are part of this protocol. | |
7197 | See comment at top of file for details. */ | |
7198 | ||
1927e618 PA |
7199 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7200 | error to higher layers. Called when a serial error is detected. | |
7201 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7202 | the system error message for errno at function entry and final dot |
7203 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7204 | |
7205 | static void | |
7206 | unpush_and_perror (const char *string) | |
7207 | { | |
d6cb50a2 | 7208 | int saved_errno = errno; |
1927e618 PA |
7209 | |
7210 | remote_unpush_target (); | |
d6cb50a2 JK |
7211 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7212 | safe_strerror (saved_errno)); | |
1927e618 PA |
7213 | } |
7214 | ||
0876f84a | 7215 | /* Read a single character from the remote end. */ |
c906108c SS |
7216 | |
7217 | static int | |
fba45db2 | 7218 | readchar (int timeout) |
c906108c SS |
7219 | { |
7220 | int ch; | |
5d93a237 | 7221 | struct remote_state *rs = get_remote_state (); |
c906108c | 7222 | |
5d93a237 | 7223 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7224 | |
2acceee2 | 7225 | if (ch >= 0) |
0876f84a | 7226 | return ch; |
2acceee2 JM |
7227 | |
7228 | switch ((enum serial_rc) ch) | |
c906108c SS |
7229 | { |
7230 | case SERIAL_EOF: | |
78a095c3 | 7231 | remote_unpush_target (); |
598d3636 | 7232 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7233 | /* no return */ |
c906108c | 7234 | case SERIAL_ERROR: |
1927e618 PA |
7235 | unpush_and_perror (_("Remote communication error. " |
7236 | "Target disconnected.")); | |
2acceee2 | 7237 | /* no return */ |
c906108c | 7238 | case SERIAL_TIMEOUT: |
2acceee2 | 7239 | break; |
c906108c | 7240 | } |
2acceee2 | 7241 | return ch; |
c906108c SS |
7242 | } |
7243 | ||
c33e31fd PA |
7244 | /* Wrapper for serial_write that closes the target and throws if |
7245 | writing fails. */ | |
7246 | ||
7247 | static void | |
7248 | remote_serial_write (const char *str, int len) | |
7249 | { | |
5d93a237 TT |
7250 | struct remote_state *rs = get_remote_state (); |
7251 | ||
7252 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7253 | { |
1927e618 PA |
7254 | unpush_and_perror (_("Remote communication error. " |
7255 | "Target disconnected.")); | |
c33e31fd PA |
7256 | } |
7257 | } | |
7258 | ||
6d820c5c DJ |
7259 | /* Send the command in *BUF to the remote machine, and read the reply |
7260 | into *BUF. Report an error if we get an error reply. Resize | |
7261 | *BUF using xrealloc if necessary to hold the result, and update | |
7262 | *SIZEOF_BUF. */ | |
c906108c SS |
7263 | |
7264 | static void | |
6d820c5c DJ |
7265 | remote_send (char **buf, |
7266 | long *sizeof_buf) | |
c906108c | 7267 | { |
6d820c5c | 7268 | putpkt (*buf); |
c2d11a7d | 7269 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7270 | |
6d820c5c DJ |
7271 | if ((*buf)[0] == 'E') |
7272 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7273 | } |
7274 | ||
6e5abd65 PA |
7275 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7276 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7277 | etc. The caller is responsible for releasing the returned | |
7278 | memory. */ | |
7279 | ||
7280 | static char * | |
7281 | escape_buffer (const char *buf, int n) | |
7282 | { | |
7283 | struct cleanup *old_chain; | |
7284 | struct ui_file *stb; | |
7285 | char *str; | |
6e5abd65 PA |
7286 | |
7287 | stb = mem_fileopen (); | |
7288 | old_chain = make_cleanup_ui_file_delete (stb); | |
7289 | ||
7290 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7291 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7292 | do_cleanups (old_chain); |
7293 | return str; | |
7294 | } | |
7295 | ||
c906108c SS |
7296 | /* Display a null-terminated packet on stdout, for debugging, using C |
7297 | string notation. */ | |
7298 | ||
7299 | static void | |
fba45db2 | 7300 | print_packet (char *buf) |
c906108c SS |
7301 | { |
7302 | puts_filtered ("\""); | |
43e526b9 | 7303 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7304 | puts_filtered ("\""); |
7305 | } | |
7306 | ||
7307 | int | |
fba45db2 | 7308 | putpkt (char *buf) |
c906108c SS |
7309 | { |
7310 | return putpkt_binary (buf, strlen (buf)); | |
7311 | } | |
7312 | ||
7313 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7314 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7315 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7316 | and for a possible /0 if we are debugging (remote_debug) and want |
7317 | to print the sent packet as a string. */ | |
c906108c SS |
7318 | |
7319 | static int | |
fba45db2 | 7320 | putpkt_binary (char *buf, int cnt) |
c906108c | 7321 | { |
2d717e4f | 7322 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7323 | int i; |
7324 | unsigned char csum = 0; | |
11cf8741 | 7325 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7326 | |
c906108c SS |
7327 | int ch; |
7328 | int tcount = 0; | |
7329 | char *p; | |
dd61ec5c | 7330 | char *message; |
c906108c | 7331 | |
e24a49d8 PA |
7332 | /* Catch cases like trying to read memory or listing threads while |
7333 | we're waiting for a stop reply. The remote server wouldn't be | |
7334 | ready to handle this request, so we'd hang and timeout. We don't | |
7335 | have to worry about this in synchronous mode, because in that | |
7336 | case it's not possible to issue a command while the target is | |
74531fed PA |
7337 | running. This is not a problem in non-stop mode, because in that |
7338 | case, the stub is always ready to process serial input. */ | |
7339 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7340 | error (_("Cannot execute this command while the target is running.")); |
7341 | ||
2d717e4f DJ |
7342 | /* We're sending out a new packet. Make sure we don't look at a |
7343 | stale cached response. */ | |
7344 | rs->cached_wait_status = 0; | |
7345 | ||
c906108c SS |
7346 | /* Copy the packet into buffer BUF2, encapsulating it |
7347 | and giving it a checksum. */ | |
7348 | ||
c906108c SS |
7349 | p = buf2; |
7350 | *p++ = '$'; | |
7351 | ||
7352 | for (i = 0; i < cnt; i++) | |
7353 | { | |
7354 | csum += buf[i]; | |
7355 | *p++ = buf[i]; | |
7356 | } | |
7357 | *p++ = '#'; | |
7358 | *p++ = tohex ((csum >> 4) & 0xf); | |
7359 | *p++ = tohex (csum & 0xf); | |
7360 | ||
7361 | /* Send it over and over until we get a positive ack. */ | |
7362 | ||
7363 | while (1) | |
7364 | { | |
7365 | int started_error_output = 0; | |
7366 | ||
7367 | if (remote_debug) | |
7368 | { | |
6e5abd65 PA |
7369 | struct cleanup *old_chain; |
7370 | char *str; | |
7371 | ||
c906108c | 7372 | *p = '\0'; |
6e5abd65 PA |
7373 | str = escape_buffer (buf2, p - buf2); |
7374 | old_chain = make_cleanup (xfree, str); | |
7375 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7376 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7377 | do_cleanups (old_chain); |
c906108c | 7378 | } |
c33e31fd | 7379 | remote_serial_write (buf2, p - buf2); |
c906108c | 7380 | |
a6f3e723 SL |
7381 | /* If this is a no acks version of the remote protocol, send the |
7382 | packet and move on. */ | |
7383 | if (rs->noack_mode) | |
7384 | break; | |
7385 | ||
74531fed PA |
7386 | /* Read until either a timeout occurs (-2) or '+' is read. |
7387 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7388 | while (1) |
7389 | { | |
7390 | ch = readchar (remote_timeout); | |
7391 | ||
c5aa993b | 7392 | if (remote_debug) |
c906108c SS |
7393 | { |
7394 | switch (ch) | |
7395 | { | |
7396 | case '+': | |
1216fa2c | 7397 | case '-': |
c906108c SS |
7398 | case SERIAL_TIMEOUT: |
7399 | case '$': | |
74531fed | 7400 | case '%': |
c906108c SS |
7401 | if (started_error_output) |
7402 | { | |
7403 | putchar_unfiltered ('\n'); | |
7404 | started_error_output = 0; | |
7405 | } | |
7406 | } | |
7407 | } | |
7408 | ||
7409 | switch (ch) | |
7410 | { | |
7411 | case '+': | |
7412 | if (remote_debug) | |
0f71a2f6 | 7413 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7414 | return 1; |
1216fa2c AC |
7415 | case '-': |
7416 | if (remote_debug) | |
7417 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7418 | /* FALLTHROUGH */ |
c906108c | 7419 | case SERIAL_TIMEOUT: |
c5aa993b | 7420 | tcount++; |
c906108c SS |
7421 | if (tcount > 3) |
7422 | return 0; | |
23860348 | 7423 | break; /* Retransmit buffer. */ |
c906108c SS |
7424 | case '$': |
7425 | { | |
40e3f985 | 7426 | if (remote_debug) |
2bc416ba | 7427 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7428 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7429 | /* It's probably an old response sent because an ACK |
7430 | was lost. Gobble up the packet and ack it so it | |
7431 | doesn't get retransmitted when we resend this | |
7432 | packet. */ | |
6d820c5c | 7433 | skip_frame (); |
c33e31fd | 7434 | remote_serial_write ("+", 1); |
23860348 | 7435 | continue; /* Now, go look for +. */ |
c906108c | 7436 | } |
74531fed PA |
7437 | |
7438 | case '%': | |
7439 | { | |
7440 | int val; | |
7441 | ||
7442 | /* If we got a notification, handle it, and go back to looking | |
7443 | for an ack. */ | |
7444 | /* We've found the start of a notification. Now | |
7445 | collect the data. */ | |
7446 | val = read_frame (&rs->buf, &rs->buf_size); | |
7447 | if (val >= 0) | |
7448 | { | |
7449 | if (remote_debug) | |
7450 | { | |
6e5abd65 PA |
7451 | struct cleanup *old_chain; |
7452 | char *str; | |
7453 | ||
7454 | str = escape_buffer (rs->buf, val); | |
7455 | old_chain = make_cleanup (xfree, str); | |
7456 | fprintf_unfiltered (gdb_stdlog, | |
7457 | " Notification received: %s\n", | |
7458 | str); | |
7459 | do_cleanups (old_chain); | |
74531fed | 7460 | } |
5965e028 | 7461 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7462 | /* We're in sync now, rewait for the ack. */ |
7463 | tcount = 0; | |
7464 | } | |
7465 | else | |
7466 | { | |
7467 | if (remote_debug) | |
7468 | { | |
7469 | if (!started_error_output) | |
7470 | { | |
7471 | started_error_output = 1; | |
7472 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7473 | } | |
7474 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7475 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7476 | } | |
7477 | } | |
7478 | continue; | |
7479 | } | |
7480 | /* fall-through */ | |
c906108c SS |
7481 | default: |
7482 | if (remote_debug) | |
7483 | { | |
7484 | if (!started_error_output) | |
7485 | { | |
7486 | started_error_output = 1; | |
0f71a2f6 | 7487 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7488 | } |
0f71a2f6 | 7489 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7490 | } |
7491 | continue; | |
7492 | } | |
23860348 | 7493 | break; /* Here to retransmit. */ |
c906108c SS |
7494 | } |
7495 | ||
7496 | #if 0 | |
7497 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7498 | able to get out next time we call QUIT, without anything as |
7499 | violent as interrupt_query. If we want to provide a way out of | |
7500 | here without getting to the next QUIT, it should be based on | |
7501 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7502 | if (quit_flag) |
7503 | { | |
7504 | quit_flag = 0; | |
7505 | interrupt_query (); | |
7506 | } | |
7507 | #endif | |
7508 | } | |
a6f3e723 | 7509 | return 0; |
c906108c SS |
7510 | } |
7511 | ||
6d820c5c DJ |
7512 | /* Come here after finding the start of a frame when we expected an |
7513 | ack. Do our best to discard the rest of this packet. */ | |
7514 | ||
7515 | static void | |
7516 | skip_frame (void) | |
7517 | { | |
7518 | int c; | |
7519 | ||
7520 | while (1) | |
7521 | { | |
7522 | c = readchar (remote_timeout); | |
7523 | switch (c) | |
7524 | { | |
7525 | case SERIAL_TIMEOUT: | |
7526 | /* Nothing we can do. */ | |
7527 | return; | |
7528 | case '#': | |
7529 | /* Discard the two bytes of checksum and stop. */ | |
7530 | c = readchar (remote_timeout); | |
7531 | if (c >= 0) | |
7532 | c = readchar (remote_timeout); | |
7533 | ||
7534 | return; | |
7535 | case '*': /* Run length encoding. */ | |
7536 | /* Discard the repeat count. */ | |
7537 | c = readchar (remote_timeout); | |
7538 | if (c < 0) | |
7539 | return; | |
7540 | break; | |
7541 | default: | |
7542 | /* A regular character. */ | |
7543 | break; | |
7544 | } | |
7545 | } | |
7546 | } | |
7547 | ||
c906108c | 7548 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7549 | into *BUF, verifying the checksum, length, and handling run-length |
7550 | compression. NUL terminate the buffer. If there is not enough room, | |
7551 | expand *BUF using xrealloc. | |
c906108c | 7552 | |
c2d11a7d JM |
7553 | Returns -1 on error, number of characters in buffer (ignoring the |
7554 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7555 | SERIAL status indications). */ |
c2d11a7d JM |
7556 | |
7557 | static long | |
6d820c5c DJ |
7558 | read_frame (char **buf_p, |
7559 | long *sizeof_buf) | |
c906108c SS |
7560 | { |
7561 | unsigned char csum; | |
c2d11a7d | 7562 | long bc; |
c906108c | 7563 | int c; |
6d820c5c | 7564 | char *buf = *buf_p; |
a6f3e723 | 7565 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7566 | |
7567 | csum = 0; | |
c2d11a7d | 7568 | bc = 0; |
c906108c SS |
7569 | |
7570 | while (1) | |
7571 | { | |
7572 | c = readchar (remote_timeout); | |
c906108c SS |
7573 | switch (c) |
7574 | { | |
7575 | case SERIAL_TIMEOUT: | |
7576 | if (remote_debug) | |
0f71a2f6 | 7577 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7578 | return -1; |
c906108c SS |
7579 | case '$': |
7580 | if (remote_debug) | |
0f71a2f6 JM |
7581 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7582 | gdb_stdlog); | |
23860348 | 7583 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7584 | case '#': |
7585 | { | |
7586 | unsigned char pktcsum; | |
e1b09194 AC |
7587 | int check_0 = 0; |
7588 | int check_1 = 0; | |
c906108c | 7589 | |
c2d11a7d | 7590 | buf[bc] = '\0'; |
c906108c | 7591 | |
e1b09194 AC |
7592 | check_0 = readchar (remote_timeout); |
7593 | if (check_0 >= 0) | |
7594 | check_1 = readchar (remote_timeout); | |
802188a7 | 7595 | |
e1b09194 AC |
7596 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7597 | { | |
7598 | if (remote_debug) | |
2bc416ba | 7599 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7600 | gdb_stdlog); |
e1b09194 AC |
7601 | return -1; |
7602 | } | |
7603 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7604 | { |
7605 | if (remote_debug) | |
2bc416ba | 7606 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7607 | gdb_stdlog); |
40e3f985 FN |
7608 | return -1; |
7609 | } | |
c906108c | 7610 | |
a6f3e723 SL |
7611 | /* Don't recompute the checksum; with no ack packets we |
7612 | don't have any way to indicate a packet retransmission | |
7613 | is necessary. */ | |
7614 | if (rs->noack_mode) | |
7615 | return bc; | |
7616 | ||
e1b09194 | 7617 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7618 | if (csum == pktcsum) |
c2d11a7d | 7619 | return bc; |
c906108c | 7620 | |
c5aa993b | 7621 | if (remote_debug) |
c906108c | 7622 | { |
6e5abd65 PA |
7623 | struct cleanup *old_chain; |
7624 | char *str; | |
7625 | ||
7626 | str = escape_buffer (buf, bc); | |
7627 | old_chain = make_cleanup (xfree, str); | |
7628 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7629 | "Bad checksum, sentsum=0x%x, " |
7630 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7631 | pktcsum, csum, str); |
7632 | do_cleanups (old_chain); | |
c906108c | 7633 | } |
c2d11a7d | 7634 | /* Number of characters in buffer ignoring trailing |
23860348 | 7635 | NULL. */ |
c2d11a7d | 7636 | return -1; |
c906108c | 7637 | } |
23860348 | 7638 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7639 | { |
7640 | int repeat; | |
c906108c | 7641 | |
a744cf53 | 7642 | csum += c; |
b4501125 AC |
7643 | c = readchar (remote_timeout); |
7644 | csum += c; | |
23860348 | 7645 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7646 | |
23860348 | 7647 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7648 | |
6d820c5c | 7649 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7650 | { |
6d820c5c DJ |
7651 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7652 | { | |
7653 | /* Make some more room in the buffer. */ | |
7654 | *sizeof_buf += repeat; | |
7655 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7656 | buf = *buf_p; | |
7657 | } | |
7658 | ||
c2d11a7d JM |
7659 | memset (&buf[bc], buf[bc - 1], repeat); |
7660 | bc += repeat; | |
c2c6d25f JM |
7661 | continue; |
7662 | } | |
7663 | ||
c2d11a7d | 7664 | buf[bc] = '\0'; |
6d820c5c | 7665 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7666 | return -1; |
c2c6d25f | 7667 | } |
c906108c | 7668 | default: |
6d820c5c | 7669 | if (bc >= *sizeof_buf - 1) |
c906108c | 7670 | { |
6d820c5c DJ |
7671 | /* Make some more room in the buffer. */ |
7672 | *sizeof_buf *= 2; | |
7673 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7674 | buf = *buf_p; | |
c906108c SS |
7675 | } |
7676 | ||
6d820c5c DJ |
7677 | buf[bc++] = c; |
7678 | csum += c; | |
7679 | continue; | |
c906108c SS |
7680 | } |
7681 | } | |
7682 | } | |
7683 | ||
7684 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7685 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7686 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7687 | rather than timing out; this is used (in synchronous mode) to wait | |
7688 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7689 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7690 | don't have to change all the calls to getpkt to deal with the | |
7691 | return value, because at the moment I don't know what the right | |
23860348 | 7692 | thing to do it for those. */ |
c906108c | 7693 | void |
6d820c5c DJ |
7694 | getpkt (char **buf, |
7695 | long *sizeof_buf, | |
c2d11a7d | 7696 | int forever) |
d9fcf2fb JM |
7697 | { |
7698 | int timed_out; | |
7699 | ||
7700 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7701 | } | |
7702 | ||
7703 | ||
7704 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7705 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7706 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7707 | rather than timing out; this is used (in synchronous mode) to wait | |
7708 | for a target that is is executing user code to stop. If FOREVER == | |
7709 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7710 | indication of this to the caller. Otherwise return the number of |
7711 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7712 | enough reason to return to the caller. *IS_NOTIF is an output |
7713 | boolean that indicates whether *BUF holds a notification or not | |
7714 | (a regular packet). */ | |
74531fed | 7715 | |
3172dc30 | 7716 | static int |
74531fed | 7717 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7718 | int expecting_notif, int *is_notif) |
c906108c | 7719 | { |
2d717e4f | 7720 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7721 | int c; |
7722 | int tries; | |
7723 | int timeout; | |
df4b58fe | 7724 | int val = -1; |
c906108c | 7725 | |
2d717e4f DJ |
7726 | /* We're reading a new response. Make sure we don't look at a |
7727 | previously cached response. */ | |
7728 | rs->cached_wait_status = 0; | |
7729 | ||
6d820c5c | 7730 | strcpy (*buf, "timeout"); |
c906108c SS |
7731 | |
7732 | if (forever) | |
74531fed PA |
7733 | timeout = watchdog > 0 ? watchdog : -1; |
7734 | else if (expecting_notif) | |
7735 | timeout = 0; /* There should already be a char in the buffer. If | |
7736 | not, bail out. */ | |
c906108c SS |
7737 | else |
7738 | timeout = remote_timeout; | |
7739 | ||
7740 | #define MAX_TRIES 3 | |
7741 | ||
74531fed PA |
7742 | /* Process any number of notifications, and then return when |
7743 | we get a packet. */ | |
7744 | for (;;) | |
c906108c | 7745 | { |
d9c43928 | 7746 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7747 | times. */ |
7748 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7749 | { |
74531fed PA |
7750 | /* This can loop forever if the remote side sends us |
7751 | characters continuously, but if it pauses, we'll get | |
7752 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7753 | we'll count that as a retry. | |
7754 | ||
7755 | Note that even when forever is set, we will only wait | |
7756 | forever prior to the start of a packet. After that, we | |
7757 | expect characters to arrive at a brisk pace. They should | |
7758 | show up within remote_timeout intervals. */ | |
7759 | do | |
7760 | c = readchar (timeout); | |
7761 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7762 | |
7763 | if (c == SERIAL_TIMEOUT) | |
7764 | { | |
74531fed PA |
7765 | if (expecting_notif) |
7766 | return -1; /* Don't complain, it's normal to not get | |
7767 | anything in this case. */ | |
7768 | ||
23860348 | 7769 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7770 | { |
2acceee2 | 7771 | QUIT; |
78a095c3 | 7772 | remote_unpush_target (); |
598d3636 JK |
7773 | throw_error (TARGET_CLOSE_ERROR, |
7774 | _("Watchdog timeout has expired. " | |
7775 | "Target detached.")); | |
c906108c | 7776 | } |
c906108c | 7777 | if (remote_debug) |
0f71a2f6 | 7778 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7779 | } |
74531fed PA |
7780 | else |
7781 | { | |
7782 | /* We've found the start of a packet or notification. | |
7783 | Now collect the data. */ | |
7784 | val = read_frame (buf, sizeof_buf); | |
7785 | if (val >= 0) | |
7786 | break; | |
7787 | } | |
7788 | ||
c33e31fd | 7789 | remote_serial_write ("-", 1); |
c906108c | 7790 | } |
c906108c | 7791 | |
74531fed PA |
7792 | if (tries > MAX_TRIES) |
7793 | { | |
7794 | /* We have tried hard enough, and just can't receive the | |
7795 | packet/notification. Give up. */ | |
7796 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7797 | |
74531fed PA |
7798 | /* Skip the ack char if we're in no-ack mode. */ |
7799 | if (!rs->noack_mode) | |
c33e31fd | 7800 | remote_serial_write ("+", 1); |
74531fed PA |
7801 | return -1; |
7802 | } | |
c906108c | 7803 | |
74531fed PA |
7804 | /* If we got an ordinary packet, return that to our caller. */ |
7805 | if (c == '$') | |
c906108c SS |
7806 | { |
7807 | if (remote_debug) | |
43e526b9 | 7808 | { |
6e5abd65 PA |
7809 | struct cleanup *old_chain; |
7810 | char *str; | |
7811 | ||
7812 | str = escape_buffer (*buf, val); | |
7813 | old_chain = make_cleanup (xfree, str); | |
7814 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7815 | do_cleanups (old_chain); | |
43e526b9 | 7816 | } |
a6f3e723 SL |
7817 | |
7818 | /* Skip the ack char if we're in no-ack mode. */ | |
7819 | if (!rs->noack_mode) | |
c33e31fd | 7820 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7821 | if (is_notif != NULL) |
7822 | *is_notif = 0; | |
0876f84a | 7823 | return val; |
c906108c SS |
7824 | } |
7825 | ||
74531fed PA |
7826 | /* If we got a notification, handle it, and go back to looking |
7827 | for a packet. */ | |
7828 | else | |
7829 | { | |
7830 | gdb_assert (c == '%'); | |
7831 | ||
7832 | if (remote_debug) | |
7833 | { | |
6e5abd65 PA |
7834 | struct cleanup *old_chain; |
7835 | char *str; | |
7836 | ||
7837 | str = escape_buffer (*buf, val); | |
7838 | old_chain = make_cleanup (xfree, str); | |
7839 | fprintf_unfiltered (gdb_stdlog, | |
7840 | " Notification received: %s\n", | |
7841 | str); | |
7842 | do_cleanups (old_chain); | |
74531fed | 7843 | } |
fee9eda9 YQ |
7844 | if (is_notif != NULL) |
7845 | *is_notif = 1; | |
c906108c | 7846 | |
5965e028 | 7847 | handle_notification (rs->notif_state, *buf); |
c906108c | 7848 | |
74531fed | 7849 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7850 | |
74531fed | 7851 | if (expecting_notif) |
fee9eda9 | 7852 | return val; |
74531fed PA |
7853 | } |
7854 | } | |
7855 | } | |
7856 | ||
7857 | static int | |
7858 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7859 | { | |
fee9eda9 | 7860 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7861 | } |
7862 | ||
7863 | static int | |
fee9eda9 YQ |
7864 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7865 | int *is_notif) | |
74531fed | 7866 | { |
fee9eda9 YQ |
7867 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7868 | is_notif); | |
c906108c | 7869 | } |
74531fed | 7870 | |
c906108c SS |
7871 | \f |
7872 | static void | |
7d85a9c0 | 7873 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7874 | { |
0fdf84ca PA |
7875 | struct gdb_exception ex; |
7876 | ||
7877 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7878 | aren't on speaking terms with the remote system. */ |
0fdf84ca PA |
7879 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
7880 | { | |
7881 | putpkt ("k"); | |
7882 | } | |
7883 | if (ex.reason < 0) | |
7884 | { | |
7885 | if (ex.error == TARGET_CLOSE_ERROR) | |
7886 | { | |
7887 | /* If we got an (EOF) error that caused the target | |
7888 | to go away, then we're done, that's what we wanted. | |
7889 | "k" is susceptible to cause a premature EOF, given | |
7890 | that the remote server isn't actually required to | |
7891 | reply to "k", and it can happen that it doesn't | |
7892 | even get to reply ACK to the "k". */ | |
7893 | return; | |
7894 | } | |
7895 | ||
7896 | /* Otherwise, something went wrong. We didn't actually kill | |
7897 | the target. Just propagate the exception, and let the | |
7898 | user or higher layers decide what to do. */ | |
7899 | throw_exception (ex); | |
7900 | } | |
43ff13b4 | 7901 | |
0fdf84ca PA |
7902 | /* We've killed the remote end, we get to mourn it. Since this is |
7903 | target remote, single-process, mourning the inferior also | |
7904 | unpushes remote_ops. */ | |
43ff13b4 JM |
7905 | target_mourn_inferior (); |
7906 | } | |
7907 | ||
82f73884 PA |
7908 | static int |
7909 | remote_vkill (int pid, struct remote_state *rs) | |
7910 | { | |
7911 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7912 | return -1; | |
7913 | ||
7914 | /* Tell the remote target to detach. */ | |
bba74b36 | 7915 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7916 | putpkt (rs->buf); |
7917 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7918 | ||
7919 | if (packet_ok (rs->buf, | |
7920 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7921 | return 0; | |
7922 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7923 | return -1; | |
7924 | else | |
7925 | return 1; | |
7926 | } | |
7927 | ||
7928 | static void | |
7d85a9c0 | 7929 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7930 | { |
7931 | int res; | |
7932 | int pid = ptid_get_pid (inferior_ptid); | |
7933 | struct remote_state *rs = get_remote_state (); | |
7934 | ||
7935 | res = remote_vkill (pid, rs); | |
901f9912 | 7936 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7937 | { |
7938 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7939 | to specify the pid. */ | |
7940 | ||
7941 | putpkt ("k"); | |
7942 | #if 0 | |
7943 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7944 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7945 | res = 1; | |
7946 | #else | |
7947 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7948 | we do or not. For the existing stubs, kill is a noop. */ | |
7949 | res = 0; | |
7950 | #endif | |
7951 | } | |
7952 | ||
7953 | if (res != 0) | |
7954 | error (_("Can't kill process")); | |
7955 | ||
82f73884 PA |
7956 | target_mourn_inferior (); |
7957 | } | |
7958 | ||
c906108c | 7959 | static void |
136d6dae | 7960 | remote_mourn (struct target_ops *ops) |
c906108c | 7961 | { |
136d6dae | 7962 | remote_mourn_1 (ops); |
c906108c SS |
7963 | } |
7964 | ||
c906108c SS |
7965 | /* Worker function for remote_mourn. */ |
7966 | static void | |
fba45db2 | 7967 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7968 | { |
7969 | unpush_target (target); | |
ce5ce7ed | 7970 | |
8a2492ee PA |
7971 | /* remote_close takes care of doing most of the clean up. */ |
7972 | generic_mourn_inferior (); | |
c906108c SS |
7973 | } |
7974 | ||
2d717e4f DJ |
7975 | static void |
7976 | extended_remote_mourn_1 (struct target_ops *target) | |
7977 | { | |
7978 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7979 | |
e24a49d8 PA |
7980 | /* In case we got here due to an error, but we're going to stay |
7981 | connected. */ | |
7982 | rs->waiting_for_stop_reply = 0; | |
7983 | ||
dc1981d7 PA |
7984 | /* If the current general thread belonged to the process we just |
7985 | detached from or has exited, the remote side current general | |
7986 | thread becomes undefined. Considering a case like this: | |
7987 | ||
7988 | - We just got here due to a detach. | |
7989 | - The process that we're detaching from happens to immediately | |
7990 | report a global breakpoint being hit in non-stop mode, in the | |
7991 | same thread we had selected before. | |
7992 | - GDB attaches to this process again. | |
7993 | - This event happens to be the next event we handle. | |
7994 | ||
7995 | GDB would consider that the current general thread didn't need to | |
7996 | be set on the stub side (with Hg), since for all it knew, | |
7997 | GENERAL_THREAD hadn't changed. | |
7998 | ||
7999 | Notice that although in all-stop mode, the remote server always | |
8000 | sets the current thread to the thread reporting the stop event, | |
8001 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8002 | not* change the current thread when reporting a breakpoint hit, | |
8003 | due to the decoupling of event reporting and event handling. | |
8004 | ||
8005 | To keep things simple, we always invalidate our notion of the | |
8006 | current thread. */ | |
47f8a51d | 8007 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8008 | |
2d717e4f DJ |
8009 | /* Unlike "target remote", we do not want to unpush the target; then |
8010 | the next time the user says "run", we won't be connected. */ | |
8011 | ||
48aa3c27 PA |
8012 | /* Call common code to mark the inferior as not running. */ |
8013 | generic_mourn_inferior (); | |
8014 | ||
d729566a | 8015 | if (!have_inferiors ()) |
2d717e4f | 8016 | { |
82f73884 PA |
8017 | if (!remote_multi_process_p (rs)) |
8018 | { | |
8019 | /* Check whether the target is running now - some remote stubs | |
8020 | automatically restart after kill. */ | |
8021 | putpkt ("?"); | |
8022 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8023 | ||
8024 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8025 | { | |
3e43a32a MS |
8026 | /* Assume that the target has been restarted. Set |
8027 | inferior_ptid so that bits of core GDB realizes | |
8028 | there's something here, e.g., so that the user can | |
8029 | say "kill" again. */ | |
82f73884 PA |
8030 | inferior_ptid = magic_null_ptid; |
8031 | } | |
82f73884 | 8032 | } |
2d717e4f DJ |
8033 | } |
8034 | } | |
c906108c SS |
8035 | |
8036 | static void | |
136d6dae | 8037 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 8038 | { |
136d6dae | 8039 | extended_remote_mourn_1 (ops); |
2d717e4f | 8040 | } |
c906108c | 8041 | |
03583c20 UW |
8042 | static int |
8043 | extended_remote_supports_disable_randomization (void) | |
8044 | { | |
8045 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
8046 | == PACKET_ENABLE); | |
8047 | } | |
8048 | ||
8049 | static void | |
8050 | extended_remote_disable_randomization (int val) | |
8051 | { | |
8052 | struct remote_state *rs = get_remote_state (); | |
8053 | char *reply; | |
8054 | ||
bba74b36 YQ |
8055 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8056 | val); | |
03583c20 UW |
8057 | putpkt (rs->buf); |
8058 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8059 | if (*reply == '\0') | |
8060 | error (_("Target does not support QDisableRandomization.")); | |
8061 | if (strcmp (reply, "OK") != 0) | |
8062 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8063 | } | |
8064 | ||
2d717e4f DJ |
8065 | static int |
8066 | extended_remote_run (char *args) | |
8067 | { | |
8068 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8069 | int len; |
c906108c | 8070 | |
2d717e4f DJ |
8071 | /* If the user has disabled vRun support, or we have detected that |
8072 | support is not available, do not try it. */ | |
8073 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
8074 | return -1; | |
424163ea | 8075 | |
2d717e4f DJ |
8076 | strcpy (rs->buf, "vRun;"); |
8077 | len = strlen (rs->buf); | |
c906108c | 8078 | |
2d717e4f DJ |
8079 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8080 | error (_("Remote file name too long for run packet")); | |
8081 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
8082 | ||
d1a41061 | 8083 | gdb_assert (args != NULL); |
2d717e4f DJ |
8084 | if (*args) |
8085 | { | |
8086 | struct cleanup *back_to; | |
8087 | int i; | |
8088 | char **argv; | |
8089 | ||
d1a41061 | 8090 | argv = gdb_buildargv (args); |
2d717e4f DJ |
8091 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
8092 | for (i = 0; argv[i] != NULL; i++) | |
8093 | { | |
8094 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8095 | error (_("Argument list too long for run packet")); | |
8096 | rs->buf[len++] = ';'; | |
8097 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
8098 | } | |
8099 | do_cleanups (back_to); | |
8100 | } | |
8101 | ||
8102 | rs->buf[len++] = '\0'; | |
8103 | ||
8104 | putpkt (rs->buf); | |
8105 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8106 | ||
8107 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
8108 | { | |
3405876a | 8109 | /* We have a wait response. All is well. */ |
2d717e4f DJ |
8110 | return 0; |
8111 | } | |
8112 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
8113 | /* It wasn't disabled before, but it is now. */ | |
8114 | return -1; | |
8115 | else | |
8116 | { | |
8117 | if (remote_exec_file[0] == '\0') | |
8118 | error (_("Running the default executable on the remote target failed; " | |
8119 | "try \"set remote exec-file\"?")); | |
8120 | else | |
8121 | error (_("Running \"%s\" on the remote target failed"), | |
8122 | remote_exec_file); | |
8123 | } | |
c906108c SS |
8124 | } |
8125 | ||
2d717e4f DJ |
8126 | /* In the extended protocol we want to be able to do things like |
8127 | "run" and have them basically work as expected. So we need | |
8128 | a special create_inferior function. We support changing the | |
8129 | executable file and the command line arguments, but not the | |
8130 | environment. */ | |
8131 | ||
43ff13b4 | 8132 | static void |
2d717e4f | 8133 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 8134 | char **env, int from_tty) |
43ff13b4 | 8135 | { |
3405876a PA |
8136 | int run_worked; |
8137 | char *stop_reply; | |
8138 | struct remote_state *rs = get_remote_state (); | |
8139 | ||
43ff13b4 | 8140 | /* If running asynchronously, register the target file descriptor |
23860348 | 8141 | with the event loop. */ |
75c99385 | 8142 | if (target_can_async_p ()) |
2acceee2 | 8143 | target_async (inferior_event_handler, 0); |
43ff13b4 | 8144 | |
03583c20 UW |
8145 | /* Disable address space randomization if requested (and supported). */ |
8146 | if (extended_remote_supports_disable_randomization ()) | |
8147 | extended_remote_disable_randomization (disable_randomization); | |
8148 | ||
43ff13b4 | 8149 | /* Now restart the remote server. */ |
3405876a PA |
8150 | run_worked = extended_remote_run (args) != -1; |
8151 | if (!run_worked) | |
2d717e4f DJ |
8152 | { |
8153 | /* vRun was not supported. Fail if we need it to do what the | |
8154 | user requested. */ | |
8155 | if (remote_exec_file[0]) | |
8156 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8157 | if (args[0]) | |
8158 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8159 | |
2d717e4f DJ |
8160 | /* Fall back to "R". */ |
8161 | extended_remote_restart (); | |
8162 | } | |
424163ea | 8163 | |
6c95b8df PA |
8164 | if (!have_inferiors ()) |
8165 | { | |
8166 | /* Clean up from the last time we ran, before we mark the target | |
8167 | running again. This will mark breakpoints uninserted, and | |
8168 | get_offsets may insert breakpoints. */ | |
8169 | init_thread_list (); | |
8170 | init_wait_for_inferior (); | |
8171 | } | |
45280a52 | 8172 | |
3405876a PA |
8173 | /* vRun's success return is a stop reply. */ |
8174 | stop_reply = run_worked ? rs->buf : NULL; | |
8175 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8176 | |
2d717e4f DJ |
8177 | /* Get updated offsets, if the stub uses qOffsets. */ |
8178 | get_offsets (); | |
2d717e4f DJ |
8179 | } |
8180 | ||
8181 | static void | |
136d6dae VP |
8182 | extended_remote_create_inferior (struct target_ops *ops, |
8183 | char *exec_file, char *args, | |
2d717e4f DJ |
8184 | char **env, int from_tty) |
8185 | { | |
75c99385 | 8186 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 8187 | } |
c906108c | 8188 | \f |
c5aa993b | 8189 | |
b775012e LM |
8190 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8191 | the list of conditions (in agent expression bytecode format), if any, the | |
8192 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8193 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8194 | |
8195 | static int | |
8196 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8197 | struct bp_target_info *bp_tgt, char *buf, |
8198 | char *buf_end) | |
b775012e LM |
8199 | { |
8200 | struct agent_expr *aexpr = NULL; | |
8201 | int i, ix; | |
8202 | char *pkt; | |
8203 | char *buf_start = buf; | |
8204 | ||
8205 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8206 | return 0; | |
8207 | ||
8208 | buf += strlen (buf); | |
bba74b36 | 8209 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8210 | buf++; |
8211 | ||
8212 | /* Send conditions to the target and free the vector. */ | |
8213 | for (ix = 0; | |
8214 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8215 | ix++) | |
8216 | { | |
bba74b36 | 8217 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8218 | buf += strlen (buf); |
8219 | for (i = 0; i < aexpr->len; ++i) | |
8220 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8221 | *buf = '\0'; | |
8222 | } | |
b775012e LM |
8223 | return 0; |
8224 | } | |
8225 | ||
d3ce09f5 SS |
8226 | static void |
8227 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8228 | struct bp_target_info *bp_tgt, char *buf) | |
8229 | { | |
8230 | struct agent_expr *aexpr = NULL; | |
8231 | int i, ix; | |
8232 | ||
8233 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8234 | return; | |
8235 | ||
8236 | buf += strlen (buf); | |
8237 | ||
8238 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8239 | buf += strlen (buf); | |
8240 | ||
8241 | /* Concatenate all the agent expressions that are commands into the | |
8242 | cmds parameter. */ | |
8243 | for (ix = 0; | |
8244 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8245 | ix++) | |
8246 | { | |
8247 | sprintf (buf, "X%x,", aexpr->len); | |
8248 | buf += strlen (buf); | |
8249 | for (i = 0; i < aexpr->len; ++i) | |
8250 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8251 | *buf = '\0'; | |
8252 | } | |
d3ce09f5 SS |
8253 | } |
8254 | ||
8181d85f DJ |
8255 | /* Insert a breakpoint. On targets that have software breakpoint |
8256 | support, we ask the remote target to do the work; on targets | |
8257 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8258 | |
8259 | static int | |
a6d9a66e UW |
8260 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
8261 | struct bp_target_info *bp_tgt) | |
c906108c | 8262 | { |
d471ea57 AC |
8263 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8264 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8265 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8266 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8267 | |
444abaca | 8268 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8269 | { |
7c0f6dcc | 8270 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8271 | struct remote_state *rs; |
bba74b36 | 8272 | char *p, *endbuf; |
7c0f6dcc | 8273 | int bpsize; |
b775012e | 8274 | struct condition_list *cond = NULL; |
4fff2411 | 8275 | |
28439a30 PA |
8276 | /* Make sure the remote is pointing at the right process, if |
8277 | necessary. */ | |
8278 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8279 | set_general_process (); | |
8280 | ||
a1dcb23a | 8281 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8282 | |
8283 | rs = get_remote_state (); | |
8284 | p = rs->buf; | |
bba74b36 | 8285 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8286 | |
96baa820 JM |
8287 | *(p++) = 'Z'; |
8288 | *(p++) = '0'; | |
8289 | *(p++) = ','; | |
7c0f6dcc | 8290 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8291 | p += hexnumstr (p, addr); |
bba74b36 | 8292 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8293 | |
b775012e | 8294 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8295 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8296 | |
d3ce09f5 SS |
8297 | if (remote_can_run_breakpoint_commands ()) |
8298 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8299 | ||
6d820c5c DJ |
8300 | putpkt (rs->buf); |
8301 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8302 | |
6d820c5c | 8303 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8304 | { |
d471ea57 AC |
8305 | case PACKET_ERROR: |
8306 | return -1; | |
8307 | case PACKET_OK: | |
7c0f6dcc JL |
8308 | bp_tgt->placed_address = addr; |
8309 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8310 | return 0; |
8311 | case PACKET_UNKNOWN: | |
8312 | break; | |
96baa820 JM |
8313 | } |
8314 | } | |
c906108c | 8315 | |
a6d9a66e | 8316 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8317 | } |
8318 | ||
8319 | static int | |
a6d9a66e UW |
8320 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
8321 | struct bp_target_info *bp_tgt) | |
c906108c | 8322 | { |
8181d85f | 8323 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8324 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8325 | |
444abaca | 8326 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8327 | { |
6d820c5c | 8328 | char *p = rs->buf; |
bba74b36 | 8329 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8330 | |
28439a30 PA |
8331 | /* Make sure the remote is pointing at the right process, if |
8332 | necessary. */ | |
8333 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8334 | set_general_process (); | |
8335 | ||
96baa820 JM |
8336 | *(p++) = 'z'; |
8337 | *(p++) = '0'; | |
8338 | *(p++) = ','; | |
8339 | ||
8181d85f DJ |
8340 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8341 | p += hexnumstr (p, addr); | |
bba74b36 | 8342 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8343 | |
6d820c5c DJ |
8344 | putpkt (rs->buf); |
8345 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8346 | |
6d820c5c | 8347 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8348 | } |
8349 | ||
a6d9a66e | 8350 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8351 | } |
8352 | ||
d471ea57 AC |
8353 | static int |
8354 | watchpoint_to_Z_packet (int type) | |
8355 | { | |
8356 | switch (type) | |
8357 | { | |
8358 | case hw_write: | |
bb858e6a | 8359 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8360 | break; |
8361 | case hw_read: | |
bb858e6a | 8362 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8363 | break; |
8364 | case hw_access: | |
bb858e6a | 8365 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8366 | break; |
8367 | default: | |
8e65ff28 | 8368 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8369 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8370 | } |
8371 | } | |
8372 | ||
3c3bea1c | 8373 | static int |
0cf6dd15 TJB |
8374 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
8375 | struct expression *cond) | |
96baa820 | 8376 | { |
d01949b6 | 8377 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8378 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8379 | char *p; |
d471ea57 | 8380 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8381 | |
444abaca | 8382 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8383 | return 1; |
802188a7 | 8384 | |
28439a30 PA |
8385 | /* Make sure the remote is pointing at the right process, if |
8386 | necessary. */ | |
8387 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8388 | set_general_process (); | |
8389 | ||
bba74b36 | 8390 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8391 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8392 | addr = remote_address_masked (addr); |
8393 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8394 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8395 | |
6d820c5c DJ |
8396 | putpkt (rs->buf); |
8397 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8398 | |
6d820c5c | 8399 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8400 | { |
8401 | case PACKET_ERROR: | |
d471ea57 | 8402 | return -1; |
85d721b8 PA |
8403 | case PACKET_UNKNOWN: |
8404 | return 1; | |
d471ea57 AC |
8405 | case PACKET_OK: |
8406 | return 0; | |
8407 | } | |
8e65ff28 | 8408 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8409 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8410 | } |
8411 | ||
283002cf MR |
8412 | static int |
8413 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8414 | CORE_ADDR start, int length) | |
8415 | { | |
8416 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8417 | ||
8418 | return diff < length; | |
8419 | } | |
8420 | ||
d471ea57 | 8421 | |
3c3bea1c | 8422 | static int |
0cf6dd15 TJB |
8423 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8424 | struct expression *cond) | |
96baa820 | 8425 | { |
d01949b6 | 8426 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8427 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8428 | char *p; |
d471ea57 AC |
8429 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8430 | ||
444abaca | 8431 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8432 | return -1; |
802188a7 | 8433 | |
28439a30 PA |
8434 | /* Make sure the remote is pointing at the right process, if |
8435 | necessary. */ | |
8436 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8437 | set_general_process (); | |
8438 | ||
bba74b36 | 8439 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8440 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8441 | addr = remote_address_masked (addr); |
8442 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8443 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8444 | putpkt (rs->buf); |
8445 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8446 | |
6d820c5c | 8447 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8448 | { |
8449 | case PACKET_ERROR: | |
8450 | case PACKET_UNKNOWN: | |
8451 | return -1; | |
8452 | case PACKET_OK: | |
8453 | return 0; | |
8454 | } | |
8e65ff28 | 8455 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8456 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8457 | } |
8458 | ||
3c3bea1c | 8459 | |
501eef12 | 8460 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8461 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8462 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8463 | |
480a3f21 PW |
8464 | static int |
8465 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8466 | { | |
8467 | if (remote_hw_watchpoint_length_limit == 0) | |
8468 | return 0; | |
8469 | else if (remote_hw_watchpoint_length_limit < 0) | |
8470 | return 1; | |
8471 | else if (len <= remote_hw_watchpoint_length_limit) | |
8472 | return 1; | |
8473 | else | |
8474 | return 0; | |
8475 | } | |
8476 | ||
b9362cc7 | 8477 | static int |
3c3bea1c | 8478 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8479 | { |
3c3bea1c GS |
8480 | if (type == bp_hardware_breakpoint) |
8481 | { | |
8482 | if (remote_hw_breakpoint_limit == 0) | |
8483 | return 0; | |
501eef12 AC |
8484 | else if (remote_hw_breakpoint_limit < 0) |
8485 | return 1; | |
3c3bea1c GS |
8486 | else if (cnt <= remote_hw_breakpoint_limit) |
8487 | return 1; | |
8488 | } | |
8489 | else | |
8490 | { | |
8491 | if (remote_hw_watchpoint_limit == 0) | |
8492 | return 0; | |
501eef12 AC |
8493 | else if (remote_hw_watchpoint_limit < 0) |
8494 | return 1; | |
3c3bea1c GS |
8495 | else if (ot) |
8496 | return -1; | |
8497 | else if (cnt <= remote_hw_watchpoint_limit) | |
8498 | return 1; | |
8499 | } | |
8500 | return -1; | |
8501 | } | |
8502 | ||
b9362cc7 | 8503 | static int |
3c3bea1c GS |
8504 | remote_stopped_by_watchpoint (void) |
8505 | { | |
ee154bee TT |
8506 | struct remote_state *rs = get_remote_state (); |
8507 | ||
8508 | return rs->remote_stopped_by_watchpoint_p; | |
3c3bea1c GS |
8509 | } |
8510 | ||
4aa7a7f5 JJ |
8511 | static int |
8512 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8513 | { |
ee154bee | 8514 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8515 | int rc = 0; |
a744cf53 | 8516 | |
d983da9c | 8517 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 | 8518 | { |
ee154bee | 8519 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8520 | rc = 1; |
8521 | } | |
8522 | ||
8523 | return rc; | |
3c3bea1c GS |
8524 | } |
8525 | ||
8526 | ||
8527 | static int | |
a6d9a66e UW |
8528 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8529 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8530 | { |
8181d85f | 8531 | CORE_ADDR addr; |
4fff2411 | 8532 | struct remote_state *rs; |
bba74b36 | 8533 | char *p, *endbuf; |
dd61ec5c | 8534 | char *message; |
802188a7 | 8535 | |
c8189ed1 | 8536 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8537 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8538 | |
a1dcb23a | 8539 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8540 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8541 | |
444abaca | 8542 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8543 | return -1; |
2bc416ba | 8544 | |
28439a30 PA |
8545 | /* Make sure the remote is pointing at the right process, if |
8546 | necessary. */ | |
8547 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8548 | set_general_process (); | |
8549 | ||
4fff2411 JZ |
8550 | rs = get_remote_state (); |
8551 | p = rs->buf; | |
bba74b36 | 8552 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8553 | |
96baa820 JM |
8554 | *(p++) = 'Z'; |
8555 | *(p++) = '1'; | |
8556 | *(p++) = ','; | |
802188a7 | 8557 | |
8181d85f | 8558 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8559 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8560 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8561 | |
b775012e | 8562 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8563 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8564 | |
d3ce09f5 SS |
8565 | if (remote_can_run_breakpoint_commands ()) |
8566 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8567 | ||
6d820c5c DJ |
8568 | putpkt (rs->buf); |
8569 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8570 | |
6d820c5c | 8571 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8572 | { |
8573 | case PACKET_ERROR: | |
dd61ec5c MW |
8574 | if (rs->buf[1] == '.') |
8575 | { | |
8576 | message = strchr (rs->buf + 2, '.'); | |
8577 | if (message) | |
0316657e | 8578 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8579 | } |
8580 | return -1; | |
d471ea57 AC |
8581 | case PACKET_UNKNOWN: |
8582 | return -1; | |
8583 | case PACKET_OK: | |
8584 | return 0; | |
8585 | } | |
8e65ff28 | 8586 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8587 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8588 | } |
8589 | ||
d471ea57 | 8590 | |
802188a7 | 8591 | static int |
a6d9a66e UW |
8592 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8593 | struct bp_target_info *bp_tgt) | |
96baa820 | 8594 | { |
8181d85f | 8595 | CORE_ADDR addr; |
d01949b6 | 8596 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8597 | char *p = rs->buf; |
bba74b36 | 8598 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8599 | |
444abaca | 8600 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8601 | return -1; |
802188a7 | 8602 | |
28439a30 PA |
8603 | /* Make sure the remote is pointing at the right process, if |
8604 | necessary. */ | |
8605 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8606 | set_general_process (); | |
8607 | ||
96baa820 JM |
8608 | *(p++) = 'z'; |
8609 | *(p++) = '1'; | |
8610 | *(p++) = ','; | |
802188a7 | 8611 | |
8181d85f | 8612 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8613 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8614 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8615 | |
6d820c5c DJ |
8616 | putpkt (rs->buf); |
8617 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8618 | |
6d820c5c | 8619 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8620 | { |
8621 | case PACKET_ERROR: | |
8622 | case PACKET_UNKNOWN: | |
8623 | return -1; | |
8624 | case PACKET_OK: | |
8625 | return 0; | |
8626 | } | |
8e65ff28 | 8627 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8628 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8629 | } |
96baa820 | 8630 | |
4a5e7a5b PA |
8631 | /* Verify memory using the "qCRC:" request. */ |
8632 | ||
8633 | static int | |
8634 | remote_verify_memory (struct target_ops *ops, | |
8635 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8636 | { | |
8637 | struct remote_state *rs = get_remote_state (); | |
8638 | unsigned long host_crc, target_crc; | |
8639 | char *tmp; | |
8640 | ||
28439a30 PA |
8641 | /* Make sure the remote is pointing at the right process. */ |
8642 | set_general_process (); | |
8643 | ||
4a5e7a5b PA |
8644 | /* FIXME: assumes lma can fit into long. */ |
8645 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8646 | (long) lma, (long) size); | |
8647 | putpkt (rs->buf); | |
8648 | ||
8649 | /* Be clever; compute the host_crc before waiting for target | |
8650 | reply. */ | |
85ec6ce7 | 8651 | host_crc = xcrc32 (data, size, 0xffffffff); |
4a5e7a5b PA |
8652 | |
8653 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8654 | if (rs->buf[0] == 'E') | |
8655 | return -1; | |
8656 | ||
8657 | if (rs->buf[0] != 'C') | |
8658 | error (_("remote target does not support this operation")); | |
8659 | ||
8660 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8661 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8662 | ||
8663 | return (host_crc == target_crc); | |
8664 | } | |
8665 | ||
c906108c SS |
8666 | /* compare-sections command |
8667 | ||
8668 | With no arguments, compares each loadable section in the exec bfd | |
8669 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8670 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8671 | |
c906108c | 8672 | static void |
fba45db2 | 8673 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8674 | { |
8675 | asection *s; | |
c906108c | 8676 | struct cleanup *old_chain; |
948f8e3d | 8677 | gdb_byte *sectdata; |
ce359b09 | 8678 | const char *sectname; |
c906108c SS |
8679 | bfd_size_type size; |
8680 | bfd_vma lma; | |
8681 | int matched = 0; | |
8682 | int mismatched = 0; | |
4a5e7a5b | 8683 | int res; |
c906108c SS |
8684 | |
8685 | if (!exec_bfd) | |
8a3fe4f8 | 8686 | error (_("command cannot be used without an exec file")); |
c906108c | 8687 | |
28439a30 PA |
8688 | /* Make sure the remote is pointing at the right process. */ |
8689 | set_general_process (); | |
8690 | ||
c5aa993b | 8691 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8692 | { |
8693 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8694 | continue; /* Skip non-loadable section. */ |
c906108c | 8695 | |
2c500098 | 8696 | size = bfd_get_section_size (s); |
c906108c | 8697 | if (size == 0) |
0df8b418 | 8698 | continue; /* Skip zero-length section. */ |
c906108c | 8699 | |
ce359b09 | 8700 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8701 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8702 | continue; /* Not the section selected by user. */ |
c906108c | 8703 | |
0df8b418 | 8704 | matched = 1; /* Do this section. */ |
c906108c | 8705 | lma = s->lma; |
c906108c | 8706 | |
c906108c | 8707 | sectdata = xmalloc (size); |
b8c9b27d | 8708 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8709 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8710 | |
4a5e7a5b PA |
8711 | res = target_verify_memory (sectdata, lma, size); |
8712 | ||
8713 | if (res == -1) | |
5af949e3 | 8714 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8715 | paddress (target_gdbarch (), lma), |
8716 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8717 | |
5af949e3 | 8718 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8719 | paddress (target_gdbarch (), lma), |
8720 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8721 | if (res) |
c906108c SS |
8722 | printf_filtered ("matched.\n"); |
8723 | else | |
c5aa993b JM |
8724 | { |
8725 | printf_filtered ("MIS-MATCHED!\n"); | |
8726 | mismatched++; | |
8727 | } | |
c906108c SS |
8728 | |
8729 | do_cleanups (old_chain); | |
8730 | } | |
8731 | if (mismatched > 0) | |
8a3fe4f8 AC |
8732 | warning (_("One or more sections of the remote executable does not match\n\ |
8733 | the loaded file\n")); | |
c906108c | 8734 | if (args && !matched) |
a3f17187 | 8735 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8736 | } |
8737 | ||
0e7f50da UW |
8738 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8739 | into remote target. The number of bytes written to the remote | |
8740 | target is returned, or -1 for error. */ | |
8741 | ||
8742 | static LONGEST | |
8743 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8744 | const char *annex, const gdb_byte *writebuf, | |
8745 | ULONGEST offset, LONGEST len, | |
8746 | struct packet_config *packet) | |
8747 | { | |
8748 | int i, buf_len; | |
8749 | ULONGEST n; | |
0e7f50da UW |
8750 | struct remote_state *rs = get_remote_state (); |
8751 | int max_size = get_memory_write_packet_size (); | |
8752 | ||
8753 | if (packet->support == PACKET_DISABLE) | |
8754 | return -1; | |
8755 | ||
8756 | /* Insert header. */ | |
8757 | i = snprintf (rs->buf, max_size, | |
8758 | "qXfer:%s:write:%s:%s:", | |
8759 | object_name, annex ? annex : "", | |
8760 | phex_nz (offset, sizeof offset)); | |
8761 | max_size -= (i + 1); | |
8762 | ||
8763 | /* Escape as much data as fits into rs->buf. */ | |
8764 | buf_len = remote_escape_output | |
bc20a4af | 8765 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8766 | |
8767 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8768 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8769 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8770 | return -1; | |
8771 | ||
8772 | unpack_varlen_hex (rs->buf, &n); | |
8773 | return n; | |
8774 | } | |
8775 | ||
0876f84a DJ |
8776 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8777 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8778 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8779 | The number of bytes read may be less than LEN without indicating an | |
8780 | EOF. PACKET is checked and updated to indicate whether the remote | |
8781 | target supports this object. */ | |
8782 | ||
8783 | static LONGEST | |
8784 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8785 | const char *annex, | |
8786 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8787 | struct packet_config *packet) | |
8788 | { | |
0876f84a | 8789 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8790 | LONGEST i, n, packet_len; |
8791 | ||
8792 | if (packet->support == PACKET_DISABLE) | |
8793 | return -1; | |
8794 | ||
8795 | /* Check whether we've cached an end-of-object packet that matches | |
8796 | this request. */ | |
8e88304f | 8797 | if (rs->finished_object) |
0876f84a | 8798 | { |
8e88304f TT |
8799 | if (strcmp (object_name, rs->finished_object) == 0 |
8800 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8801 | && offset == rs->finished_offset) | |
0876f84a DJ |
8802 | return 0; |
8803 | ||
8804 | /* Otherwise, we're now reading something different. Discard | |
8805 | the cache. */ | |
8e88304f TT |
8806 | xfree (rs->finished_object); |
8807 | xfree (rs->finished_annex); | |
8808 | rs->finished_object = NULL; | |
8809 | rs->finished_annex = NULL; | |
0876f84a DJ |
8810 | } |
8811 | ||
8812 | /* Request only enough to fit in a single packet. The actual data | |
8813 | may not, since we don't know how much of it will need to be escaped; | |
8814 | the target is free to respond with slightly less data. We subtract | |
8815 | five to account for the response type and the protocol frame. */ | |
8816 | n = min (get_remote_packet_size () - 5, len); | |
8817 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8818 | object_name, annex ? annex : "", | |
8819 | phex_nz (offset, sizeof offset), | |
8820 | phex_nz (n, sizeof n)); | |
8821 | i = putpkt (rs->buf); | |
8822 | if (i < 0) | |
8823 | return -1; | |
8824 | ||
8825 | rs->buf[0] = '\0'; | |
8826 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8827 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8828 | return -1; | |
8829 | ||
8830 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8831 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8832 | ||
8833 | /* 'm' means there is (or at least might be) more data after this | |
8834 | batch. That does not make sense unless there's at least one byte | |
8835 | of data in this reply. */ | |
8836 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8837 | error (_("Remote qXfer reply contained no data.")); | |
8838 | ||
8839 | /* Got some data. */ | |
bc20a4af PA |
8840 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8841 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8842 | |
8843 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8844 | or possibly empty. If we have the final block of a non-empty |
8845 | object, record this fact to bypass a subsequent partial read. */ | |
8846 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8847 | { |
8e88304f TT |
8848 | rs->finished_object = xstrdup (object_name); |
8849 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8850 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8851 | } |
8852 | ||
8853 | return i; | |
8854 | } | |
8855 | ||
1e3ff5ad | 8856 | static LONGEST |
4b8a223f | 8857 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8858 | const char *annex, gdb_byte *readbuf, |
8859 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8860 | { |
82f73884 | 8861 | struct remote_state *rs; |
c906108c | 8862 | int i; |
6d820c5c | 8863 | char *p2; |
1e3ff5ad | 8864 | char query_type; |
c906108c | 8865 | |
e6e4e701 | 8866 | set_remote_traceframe (); |
82f73884 PA |
8867 | set_general_thread (inferior_ptid); |
8868 | ||
8869 | rs = get_remote_state (); | |
8870 | ||
b2182ed2 | 8871 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8872 | if (object == TARGET_OBJECT_MEMORY) |
8873 | { | |
00d84524 | 8874 | LONGEST xfered; |
21e3b9b9 | 8875 | |
2d717e4f DJ |
8876 | /* If the remote target is connected but not running, we should |
8877 | pass this request down to a lower stratum (e.g. the executable | |
8878 | file). */ | |
8879 | if (!target_has_execution) | |
8880 | return 0; | |
8881 | ||
21e3b9b9 | 8882 | if (writebuf != NULL) |
b2182ed2 | 8883 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8884 | else |
b2182ed2 | 8885 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 | 8886 | |
00d84524 | 8887 | return xfered; |
21e3b9b9 DJ |
8888 | } |
8889 | ||
0df8b418 | 8890 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8891 | if (object == TARGET_OBJECT_SPU) |
8892 | { | |
8893 | if (readbuf) | |
8894 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8895 | &remote_protocol_packets | |
8896 | [PACKET_qXfer_spu_read]); | |
8897 | else | |
8898 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8899 | &remote_protocol_packets | |
8900 | [PACKET_qXfer_spu_write]); | |
8901 | } | |
8902 | ||
4aa995e1 PA |
8903 | /* Handle extra signal info using qxfer packets. */ |
8904 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8905 | { | |
8906 | if (readbuf) | |
8907 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8908 | &remote_protocol_packets | |
8909 | [PACKET_qXfer_siginfo_read]); | |
8910 | else | |
3e43a32a MS |
8911 | return remote_write_qxfer (ops, "siginfo", annex, |
8912 | writebuf, offset, len, | |
4aa995e1 PA |
8913 | &remote_protocol_packets |
8914 | [PACKET_qXfer_siginfo_write]); | |
8915 | } | |
8916 | ||
0fb4aa4b PA |
8917 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8918 | { | |
8919 | if (readbuf) | |
3e43a32a MS |
8920 | return remote_read_qxfer (ops, "statictrace", annex, |
8921 | readbuf, offset, len, | |
0fb4aa4b PA |
8922 | &remote_protocol_packets |
8923 | [PACKET_qXfer_statictrace_read]); | |
8924 | else | |
8925 | return -1; | |
8926 | } | |
8927 | ||
a76d924d DJ |
8928 | /* Only handle flash writes. */ |
8929 | if (writebuf != NULL) | |
8930 | { | |
8931 | LONGEST xfered; | |
8932 | ||
8933 | switch (object) | |
8934 | { | |
8935 | case TARGET_OBJECT_FLASH: | |
00d84524 | 8936 | return remote_flash_write (ops, offset, len, writebuf); |
a76d924d DJ |
8937 | |
8938 | default: | |
8939 | return -1; | |
8940 | } | |
8941 | } | |
4b8a223f | 8942 | |
1e3ff5ad AC |
8943 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8944 | objects!!! Instead specify new query packets. */ | |
8945 | switch (object) | |
c906108c | 8946 | { |
1e3ff5ad AC |
8947 | case TARGET_OBJECT_AVR: |
8948 | query_type = 'R'; | |
8949 | break; | |
802188a7 RM |
8950 | |
8951 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8952 | gdb_assert (annex == NULL); |
8953 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8954 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8955 | |
23181151 DJ |
8956 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8957 | return remote_read_qxfer | |
8958 | (ops, "features", annex, readbuf, offset, len, | |
8959 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8960 | ||
cfa9d6d9 DJ |
8961 | case TARGET_OBJECT_LIBRARIES: |
8962 | return remote_read_qxfer | |
8963 | (ops, "libraries", annex, readbuf, offset, len, | |
8964 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8965 | ||
2268b414 JK |
8966 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8967 | return remote_read_qxfer | |
8968 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8969 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8970 | ||
fd79ecee DJ |
8971 | case TARGET_OBJECT_MEMORY_MAP: |
8972 | gdb_assert (annex == NULL); | |
8973 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8974 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8975 | ||
07e059b5 VP |
8976 | case TARGET_OBJECT_OSDATA: |
8977 | /* Should only get here if we're connected. */ | |
5d93a237 | 8978 | gdb_assert (rs->remote_desc); |
07e059b5 VP |
8979 | return remote_read_qxfer |
8980 | (ops, "osdata", annex, readbuf, offset, len, | |
8981 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8982 | ||
dc146f7c VP |
8983 | case TARGET_OBJECT_THREADS: |
8984 | gdb_assert (annex == NULL); | |
8985 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8986 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8987 | ||
b3b9301e PA |
8988 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8989 | gdb_assert (annex == NULL); | |
8990 | return remote_read_qxfer | |
8991 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8992 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8993 | |
8994 | case TARGET_OBJECT_FDPIC: | |
8995 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8996 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8997 | |
8998 | case TARGET_OBJECT_OPENVMS_UIB: | |
8999 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9000 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
9001 | ||
9accd112 MM |
9002 | case TARGET_OBJECT_BTRACE: |
9003 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9004 | &remote_protocol_packets[PACKET_qXfer_btrace]); | |
9005 | ||
1e3ff5ad | 9006 | default: |
c906108c SS |
9007 | return -1; |
9008 | } | |
9009 | ||
4b8a223f | 9010 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 9011 | buffer size. */ |
4b8a223f | 9012 | if (offset == 0 && len == 0) |
ea9c271d | 9013 | return (get_remote_packet_size ()); |
0df8b418 | 9014 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9015 | large enough let the caller deal with it. */ |
ea9c271d | 9016 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 9017 | return -1; |
ea9c271d | 9018 | len = get_remote_packet_size (); |
1e3ff5ad | 9019 | |
23860348 | 9020 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9021 | if (!rs->remote_desc) |
8a3fe4f8 | 9022 | error (_("remote query is only available after target open")); |
c906108c | 9023 | |
1e3ff5ad | 9024 | gdb_assert (annex != NULL); |
4b8a223f | 9025 | gdb_assert (readbuf != NULL); |
c906108c | 9026 | |
6d820c5c | 9027 | p2 = rs->buf; |
c906108c SS |
9028 | *p2++ = 'q'; |
9029 | *p2++ = query_type; | |
9030 | ||
23860348 MS |
9031 | /* We used one buffer char for the remote protocol q command and |
9032 | another for the query type. As the remote protocol encapsulation | |
9033 | uses 4 chars plus one extra in case we are debugging | |
9034 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9035 | string. */ | |
c906108c | 9036 | i = 0; |
ea9c271d | 9037 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9038 | { |
1e3ff5ad AC |
9039 | /* Bad caller may have sent forbidden characters. */ |
9040 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9041 | *p2++ = annex[i]; | |
c906108c SS |
9042 | i++; |
9043 | } | |
1e3ff5ad AC |
9044 | *p2 = '\0'; |
9045 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9046 | |
6d820c5c | 9047 | i = putpkt (rs->buf); |
c5aa993b JM |
9048 | if (i < 0) |
9049 | return i; | |
c906108c | 9050 | |
6d820c5c DJ |
9051 | getpkt (&rs->buf, &rs->buf_size, 0); |
9052 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9053 | |
cfd77fa1 | 9054 | return strlen ((char *) readbuf); |
c906108c SS |
9055 | } |
9056 | ||
08388c79 DE |
9057 | static int |
9058 | remote_search_memory (struct target_ops* ops, | |
9059 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9060 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9061 | CORE_ADDR *found_addrp) | |
9062 | { | |
f5656ead | 9063 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9064 | struct remote_state *rs = get_remote_state (); |
9065 | int max_size = get_memory_write_packet_size (); | |
9066 | struct packet_config *packet = | |
9067 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9068 | /* Number of packet bytes used to encode the pattern; |
9069 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9070 | int escaped_pattern_len; |
0df8b418 | 9071 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9072 | int used_pattern_len; |
9073 | int i; | |
9074 | int found; | |
9075 | ULONGEST found_addr; | |
9076 | ||
9077 | /* Don't go to the target if we don't have to. | |
9078 | This is done before checking packet->support to avoid the possibility that | |
9079 | a success for this edge case means the facility works in general. */ | |
9080 | if (pattern_len > search_space_len) | |
9081 | return 0; | |
9082 | if (pattern_len == 0) | |
9083 | { | |
9084 | *found_addrp = start_addr; | |
9085 | return 1; | |
9086 | } | |
9087 | ||
9088 | /* If we already know the packet isn't supported, fall back to the simple | |
9089 | way of searching memory. */ | |
9090 | ||
9091 | if (packet->support == PACKET_DISABLE) | |
9092 | { | |
9093 | /* Target doesn't provided special support, fall back and use the | |
9094 | standard support (copy memory and do the search here). */ | |
9095 | return simple_search_memory (ops, start_addr, search_space_len, | |
9096 | pattern, pattern_len, found_addrp); | |
9097 | } | |
9098 | ||
28439a30 PA |
9099 | /* Make sure the remote is pointing at the right process. */ |
9100 | set_general_process (); | |
9101 | ||
08388c79 DE |
9102 | /* Insert header. */ |
9103 | i = snprintf (rs->buf, max_size, | |
9104 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9105 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9106 | phex_nz (search_space_len, sizeof (search_space_len))); |
9107 | max_size -= (i + 1); | |
9108 | ||
9109 | /* Escape as much data as fits into rs->buf. */ | |
9110 | escaped_pattern_len = | |
bc20a4af | 9111 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9112 | &used_pattern_len, max_size); |
9113 | ||
9114 | /* Bail if the pattern is too large. */ | |
9115 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9116 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9117 | |
9118 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9119 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9120 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9121 | { | |
9122 | /* The request may not have worked because the command is not | |
9123 | supported. If so, fall back to the simple way. */ | |
9124 | if (packet->support == PACKET_DISABLE) | |
9125 | { | |
9126 | return simple_search_memory (ops, start_addr, search_space_len, | |
9127 | pattern, pattern_len, found_addrp); | |
9128 | } | |
9129 | return -1; | |
9130 | } | |
9131 | ||
9132 | if (rs->buf[0] == '0') | |
9133 | found = 0; | |
9134 | else if (rs->buf[0] == '1') | |
9135 | { | |
9136 | found = 1; | |
9137 | if (rs->buf[1] != ',') | |
10e0fa18 | 9138 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9139 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9140 | *found_addrp = found_addr; | |
9141 | } | |
9142 | else | |
10e0fa18 | 9143 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9144 | |
9145 | return found; | |
9146 | } | |
9147 | ||
96baa820 JM |
9148 | static void |
9149 | remote_rcmd (char *command, | |
d9fcf2fb | 9150 | struct ui_file *outbuf) |
96baa820 | 9151 | { |
d01949b6 | 9152 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9153 | char *p = rs->buf; |
96baa820 | 9154 | |
5d93a237 | 9155 | if (!rs->remote_desc) |
8a3fe4f8 | 9156 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9157 | |
23860348 | 9158 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9159 | if (command == NULL) |
9160 | command = ""; | |
9161 | ||
23860348 | 9162 | /* The query prefix. */ |
2e9f7625 DJ |
9163 | strcpy (rs->buf, "qRcmd,"); |
9164 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9165 | |
3e43a32a MS |
9166 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9167 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9168 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9169 | |
23860348 | 9170 | /* Encode the actual command. */ |
cfd77fa1 | 9171 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 9172 | |
6d820c5c | 9173 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9174 | error (_("Communication problem with target.")); |
96baa820 JM |
9175 | |
9176 | /* get/display the response */ | |
9177 | while (1) | |
9178 | { | |
2e9f7625 DJ |
9179 | char *buf; |
9180 | ||
00bf0b85 | 9181 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9182 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9183 | rs->buf[0] = '\0'; |
5b37825d PW |
9184 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9185 | { | |
9186 | /* Timeout. Continue to (try to) read responses. | |
9187 | This is better than stopping with an error, assuming the stub | |
9188 | is still executing the (long) monitor command. | |
9189 | If needed, the user can interrupt gdb using C-c, obtaining | |
9190 | an effect similar to stop on timeout. */ | |
9191 | continue; | |
9192 | } | |
2e9f7625 | 9193 | buf = rs->buf; |
96baa820 | 9194 | if (buf[0] == '\0') |
8a3fe4f8 | 9195 | error (_("Target does not support this command.")); |
96baa820 JM |
9196 | if (buf[0] == 'O' && buf[1] != 'K') |
9197 | { | |
23860348 | 9198 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9199 | continue; |
9200 | } | |
9201 | if (strcmp (buf, "OK") == 0) | |
9202 | break; | |
7be570e7 JM |
9203 | if (strlen (buf) == 3 && buf[0] == 'E' |
9204 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9205 | { | |
8a3fe4f8 | 9206 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9207 | } |
96baa820 JM |
9208 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9209 | { | |
9210 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9211 | |
96baa820 JM |
9212 | fputc_unfiltered (c, outbuf); |
9213 | } | |
9214 | break; | |
9215 | } | |
9216 | } | |
9217 | ||
fd79ecee DJ |
9218 | static VEC(mem_region_s) * |
9219 | remote_memory_map (struct target_ops *ops) | |
9220 | { | |
9221 | VEC(mem_region_s) *result = NULL; | |
9222 | char *text = target_read_stralloc (¤t_target, | |
9223 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9224 | ||
9225 | if (text) | |
9226 | { | |
9227 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9228 | |
fd79ecee DJ |
9229 | result = parse_memory_map (text); |
9230 | do_cleanups (back_to); | |
9231 | } | |
9232 | ||
9233 | return result; | |
9234 | } | |
9235 | ||
c906108c | 9236 | static void |
fba45db2 | 9237 | packet_command (char *args, int from_tty) |
c906108c | 9238 | { |
d01949b6 | 9239 | struct remote_state *rs = get_remote_state (); |
c906108c | 9240 | |
5d93a237 | 9241 | if (!rs->remote_desc) |
8a3fe4f8 | 9242 | error (_("command can only be used with remote target")); |
c906108c | 9243 | |
c5aa993b | 9244 | if (!args) |
8a3fe4f8 | 9245 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9246 | |
9247 | puts_filtered ("sending: "); | |
9248 | print_packet (args); | |
9249 | puts_filtered ("\n"); | |
9250 | putpkt (args); | |
9251 | ||
6d820c5c | 9252 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9253 | puts_filtered ("received: "); |
6d820c5c | 9254 | print_packet (rs->buf); |
c906108c SS |
9255 | puts_filtered ("\n"); |
9256 | } | |
9257 | ||
9258 | #if 0 | |
23860348 | 9259 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9260 | |
a14ed312 | 9261 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9262 | |
a14ed312 | 9263 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9264 | |
a14ed312 | 9265 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9266 | |
a14ed312 | 9267 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9268 | |
23860348 | 9269 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9270 | |
a14ed312 | 9271 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9272 | |
23860348 | 9273 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9274 | |
a14ed312 | 9275 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9276 | |
a14ed312 | 9277 | static void init_remote_threadtests (void); |
c906108c | 9278 | |
23860348 | 9279 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9280 | |
9281 | static void | |
fba45db2 | 9282 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9283 | { |
9284 | int sample_thread = SAMPLE_THREAD; | |
9285 | ||
a3f17187 | 9286 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9287 | set_general_thread (sample_thread); |
c906108c SS |
9288 | } |
9289 | ||
9290 | ||
9291 | static void | |
fba45db2 | 9292 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9293 | { |
9294 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
9295 | int pid = ptid_get_pid (inferior_ptid); |
9296 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 9297 | |
79d7f229 | 9298 | if (remote_thread_alive (ptid)) |
c906108c SS |
9299 | printf_filtered ("PASS: Thread alive test\n"); |
9300 | else | |
9301 | printf_filtered ("FAIL: Thread alive test\n"); | |
9302 | } | |
9303 | ||
23860348 | 9304 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9305 | |
9306 | void | |
fba45db2 | 9307 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9308 | { |
9309 | char hexid[20]; | |
9310 | ||
23860348 | 9311 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9312 | hexid[16] = 0; |
9313 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9314 | } | |
9315 | ||
9316 | static void | |
fba45db2 | 9317 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9318 | { |
9319 | int startflag = 1; | |
9320 | threadref nextthread; | |
9321 | int done, result_count; | |
9322 | threadref threadlist[3]; | |
9323 | ||
9324 | printf_filtered ("Remote Threadlist test\n"); | |
9325 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9326 | &result_count, &threadlist[0])) | |
9327 | printf_filtered ("FAIL: threadlist test\n"); | |
9328 | else | |
9329 | { | |
9330 | threadref *scan = threadlist; | |
9331 | threadref *limit = scan + result_count; | |
9332 | ||
9333 | while (scan < limit) | |
9334 | output_threadid (" thread ", scan++); | |
9335 | } | |
9336 | } | |
9337 | ||
9338 | void | |
fba45db2 | 9339 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9340 | { |
9341 | output_threadid ("Threadid: ", &info->threadid); | |
9342 | printf_filtered ("Name: %s\n ", info->shortname); | |
9343 | printf_filtered ("State: %s\n", info->display); | |
9344 | printf_filtered ("other: %s\n\n", info->more_display); | |
9345 | } | |
9346 | ||
9347 | int | |
fba45db2 | 9348 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9349 | { |
9350 | int result; | |
9351 | int set; | |
9352 | struct gdb_ext_thread_info threadinfo; | |
9353 | ||
9354 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9355 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9356 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9357 | display_thread_info (&threadinfo); | |
9358 | return result; | |
9359 | } | |
9360 | ||
9361 | static void | |
fba45db2 | 9362 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9363 | { |
9364 | int athread = SAMPLE_THREAD; | |
9365 | threadref thread; | |
9366 | int set; | |
9367 | ||
9368 | int_to_threadref (&thread, athread); | |
9369 | printf_filtered ("Remote Threadinfo test\n"); | |
9370 | if (!get_and_display_threadinfo (&thread)) | |
9371 | printf_filtered ("FAIL cannot get thread info\n"); | |
9372 | } | |
9373 | ||
9374 | static int | |
fba45db2 | 9375 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9376 | { |
9377 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9378 | return get_and_display_threadinfo (ref); | |
9379 | } | |
9380 | ||
9381 | static void | |
fba45db2 | 9382 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9383 | { |
9384 | printf_filtered ("Remote Threadlist update test\n"); | |
9385 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9386 | } | |
9387 | ||
9388 | static void | |
9389 | init_remote_threadtests (void) | |
9390 | { | |
3e43a32a MS |
9391 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9392 | _("Fetch and print the remote list of " | |
9393 | "thread identifiers, one pkt only")); | |
c906108c | 9394 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9395 | _("Fetch and display info about one thread")); |
c906108c | 9396 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9397 | _("Test setting to a different thread")); |
c906108c | 9398 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9399 | _("Iterate through updating all remote thread info")); |
c906108c | 9400 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9401 | _(" Remote thread alive test ")); |
c906108c SS |
9402 | } |
9403 | ||
9404 | #endif /* 0 */ | |
9405 | ||
f3fb8c85 MS |
9406 | /* Convert a thread ID to a string. Returns the string in a static |
9407 | buffer. */ | |
9408 | ||
9409 | static char * | |
117de6a9 | 9410 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9411 | { |
79d7f229 | 9412 | static char buf[64]; |
82f73884 | 9413 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9414 | |
7cee1e54 PA |
9415 | if (ptid_equal (ptid, null_ptid)) |
9416 | return normal_pid_to_str (ptid); | |
9417 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9418 | { |
9419 | /* Printing an inferior target id. */ | |
9420 | ||
9421 | /* When multi-process extensions are off, there's no way in the | |
9422 | remote protocol to know the remote process id, if there's any | |
9423 | at all. There's one exception --- when we're connected with | |
9424 | target extended-remote, and we manually attached to a process | |
9425 | with "attach PID". We don't record anywhere a flag that | |
9426 | allows us to distinguish that case from the case of | |
9427 | connecting with extended-remote and the stub already being | |
9428 | attached to a process, and reporting yes to qAttached, hence | |
9429 | no smart special casing here. */ | |
9430 | if (!remote_multi_process_p (rs)) | |
9431 | { | |
9432 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9433 | return buf; | |
9434 | } | |
9435 | ||
9436 | return normal_pid_to_str (ptid); | |
82f73884 | 9437 | } |
ecd0ada5 | 9438 | else |
79d7f229 | 9439 | { |
ecd0ada5 PA |
9440 | if (ptid_equal (magic_null_ptid, ptid)) |
9441 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9442 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9443 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9444 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9445 | else | |
9446 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9447 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9448 | return buf; |
9449 | } | |
f3fb8c85 MS |
9450 | } |
9451 | ||
38691318 KB |
9452 | /* Get the address of the thread local variable in OBJFILE which is |
9453 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9454 | ||
9455 | static CORE_ADDR | |
117de6a9 PA |
9456 | remote_get_thread_local_address (struct target_ops *ops, |
9457 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9458 | { |
444abaca | 9459 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9460 | { |
9461 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9462 | char *p = rs->buf; |
82f73884 | 9463 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9464 | enum packet_result result; |
38691318 KB |
9465 | |
9466 | strcpy (p, "qGetTLSAddr:"); | |
9467 | p += strlen (p); | |
82f73884 | 9468 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9469 | *p++ = ','; |
9470 | p += hexnumstr (p, offset); | |
9471 | *p++ = ','; | |
9472 | p += hexnumstr (p, lm); | |
9473 | *p++ = '\0'; | |
9474 | ||
6d820c5c DJ |
9475 | putpkt (rs->buf); |
9476 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9477 | result = packet_ok (rs->buf, |
9478 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9479 | if (result == PACKET_OK) |
38691318 KB |
9480 | { |
9481 | ULONGEST result; | |
9482 | ||
6d820c5c | 9483 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9484 | return result; |
9485 | } | |
571dd617 | 9486 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9487 | throw_error (TLS_GENERIC_ERROR, |
9488 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9489 | else |
109c3e39 AC |
9490 | throw_error (TLS_GENERIC_ERROR, |
9491 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9492 | } |
9493 | else | |
109c3e39 AC |
9494 | throw_error (TLS_GENERIC_ERROR, |
9495 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9496 | /* Not reached. */ |
9497 | return 0; | |
9498 | } | |
9499 | ||
711e434b PM |
9500 | /* Provide thread local base, i.e. Thread Information Block address. |
9501 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9502 | ||
70221824 | 9503 | static int |
711e434b PM |
9504 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9505 | { | |
9506 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9507 | { | |
9508 | struct remote_state *rs = get_remote_state (); | |
9509 | char *p = rs->buf; | |
9510 | char *endp = rs->buf + get_remote_packet_size (); | |
9511 | enum packet_result result; | |
9512 | ||
9513 | strcpy (p, "qGetTIBAddr:"); | |
9514 | p += strlen (p); | |
9515 | p = write_ptid (p, endp, ptid); | |
9516 | *p++ = '\0'; | |
9517 | ||
9518 | putpkt (rs->buf); | |
9519 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9520 | result = packet_ok (rs->buf, | |
9521 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9522 | if (result == PACKET_OK) | |
9523 | { | |
9524 | ULONGEST result; | |
9525 | ||
9526 | unpack_varlen_hex (rs->buf, &result); | |
9527 | if (addr) | |
9528 | *addr = (CORE_ADDR) result; | |
9529 | return 1; | |
9530 | } | |
9531 | else if (result == PACKET_UNKNOWN) | |
9532 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9533 | else | |
9534 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9535 | } | |
9536 | else | |
9537 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9538 | /* Not reached. */ | |
9539 | return 0; | |
9540 | } | |
9541 | ||
29709017 DJ |
9542 | /* Support for inferring a target description based on the current |
9543 | architecture and the size of a 'g' packet. While the 'g' packet | |
9544 | can have any size (since optional registers can be left off the | |
9545 | end), some sizes are easily recognizable given knowledge of the | |
9546 | approximate architecture. */ | |
9547 | ||
9548 | struct remote_g_packet_guess | |
9549 | { | |
9550 | int bytes; | |
9551 | const struct target_desc *tdesc; | |
9552 | }; | |
9553 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9554 | DEF_VEC_O(remote_g_packet_guess_s); | |
9555 | ||
9556 | struct remote_g_packet_data | |
9557 | { | |
9558 | VEC(remote_g_packet_guess_s) *guesses; | |
9559 | }; | |
9560 | ||
9561 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9562 | ||
9563 | static void * | |
9564 | remote_g_packet_data_init (struct obstack *obstack) | |
9565 | { | |
9566 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9567 | } | |
9568 | ||
9569 | void | |
9570 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9571 | const struct target_desc *tdesc) | |
9572 | { | |
9573 | struct remote_g_packet_data *data | |
9574 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9575 | struct remote_g_packet_guess new_guess, *guess; | |
9576 | int ix; | |
9577 | ||
9578 | gdb_assert (tdesc != NULL); | |
9579 | ||
9580 | for (ix = 0; | |
9581 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9582 | ix++) | |
9583 | if (guess->bytes == bytes) | |
9584 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9585 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9586 | bytes); |
9587 | ||
9588 | new_guess.bytes = bytes; | |
9589 | new_guess.tdesc = tdesc; | |
9590 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9591 | } | |
9592 | ||
d962ef82 DJ |
9593 | /* Return 1 if remote_read_description would do anything on this target |
9594 | and architecture, 0 otherwise. */ | |
9595 | ||
9596 | static int | |
9597 | remote_read_description_p (struct target_ops *target) | |
9598 | { | |
9599 | struct remote_g_packet_data *data | |
f5656ead | 9600 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9601 | |
9602 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9603 | return 1; | |
9604 | ||
9605 | return 0; | |
9606 | } | |
9607 | ||
29709017 DJ |
9608 | static const struct target_desc * |
9609 | remote_read_description (struct target_ops *target) | |
9610 | { | |
9611 | struct remote_g_packet_data *data | |
f5656ead | 9612 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9613 | |
d962ef82 DJ |
9614 | /* Do not try this during initial connection, when we do not know |
9615 | whether there is a running but stopped thread. */ | |
9616 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9617 | return NULL; | |
9618 | ||
29709017 DJ |
9619 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9620 | { | |
9621 | struct remote_g_packet_guess *guess; | |
9622 | int ix; | |
9623 | int bytes = send_g_packet (); | |
9624 | ||
9625 | for (ix = 0; | |
9626 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9627 | ix++) | |
9628 | if (guess->bytes == bytes) | |
9629 | return guess->tdesc; | |
9630 | ||
9631 | /* We discard the g packet. A minor optimization would be to | |
9632 | hold on to it, and fill the register cache once we have selected | |
9633 | an architecture, but it's too tricky to do safely. */ | |
9634 | } | |
9635 | ||
9636 | return NULL; | |
9637 | } | |
9638 | ||
a6b151f1 DJ |
9639 | /* Remote file transfer support. This is host-initiated I/O, not |
9640 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9641 | ||
9642 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9643 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9644 | decrease *LEFT. Otherwise raise an error. */ | |
9645 | ||
9646 | static void | |
9647 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9648 | { | |
9649 | int len = strlen (string); | |
9650 | ||
9651 | if (len > *left) | |
9652 | error (_("Packet too long for target.")); | |
9653 | ||
9654 | memcpy (*buffer, string, len); | |
9655 | *buffer += len; | |
9656 | *left -= len; | |
9657 | ||
9658 | /* NUL-terminate the buffer as a convenience, if there is | |
9659 | room. */ | |
9660 | if (*left) | |
9661 | **buffer = '\0'; | |
9662 | } | |
9663 | ||
9664 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9665 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9666 | decrease *LEFT. Otherwise raise an error. */ | |
9667 | ||
9668 | static void | |
9669 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9670 | int len) | |
9671 | { | |
9672 | if (2 * len > *left) | |
9673 | error (_("Packet too long for target.")); | |
9674 | ||
9675 | bin2hex (bytes, *buffer, len); | |
9676 | *buffer += 2 * len; | |
9677 | *left -= 2 * len; | |
9678 | ||
9679 | /* NUL-terminate the buffer as a convenience, if there is | |
9680 | room. */ | |
9681 | if (*left) | |
9682 | **buffer = '\0'; | |
9683 | } | |
9684 | ||
9685 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9686 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9687 | decrease *LEFT. Otherwise raise an error. */ | |
9688 | ||
9689 | static void | |
9690 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9691 | { | |
9692 | int len = hexnumlen (value); | |
9693 | ||
9694 | if (len > *left) | |
9695 | error (_("Packet too long for target.")); | |
9696 | ||
9697 | hexnumstr (*buffer, value); | |
9698 | *buffer += len; | |
9699 | *left -= len; | |
9700 | ||
9701 | /* NUL-terminate the buffer as a convenience, if there is | |
9702 | room. */ | |
9703 | if (*left) | |
9704 | **buffer = '\0'; | |
9705 | } | |
9706 | ||
9707 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9708 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9709 | was included, and *ATTACHMENT to point to the start of the annex | |
9710 | if any. The length of the packet isn't needed here; there may | |
9711 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9712 | ||
9713 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9714 | -1 is returned, the other variables may not be initialized. */ | |
9715 | ||
9716 | static int | |
9717 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9718 | int *remote_errno, char **attachment) | |
9719 | { | |
9720 | char *p, *p2; | |
9721 | ||
9722 | *remote_errno = 0; | |
9723 | *attachment = NULL; | |
9724 | ||
9725 | if (buffer[0] != 'F') | |
9726 | return -1; | |
9727 | ||
9728 | errno = 0; | |
9729 | *retcode = strtol (&buffer[1], &p, 16); | |
9730 | if (errno != 0 || p == &buffer[1]) | |
9731 | return -1; | |
9732 | ||
9733 | /* Check for ",errno". */ | |
9734 | if (*p == ',') | |
9735 | { | |
9736 | errno = 0; | |
9737 | *remote_errno = strtol (p + 1, &p2, 16); | |
9738 | if (errno != 0 || p + 1 == p2) | |
9739 | return -1; | |
9740 | p = p2; | |
9741 | } | |
9742 | ||
9743 | /* Check for ";attachment". If there is no attachment, the | |
9744 | packet should end here. */ | |
9745 | if (*p == ';') | |
9746 | { | |
9747 | *attachment = p + 1; | |
9748 | return 0; | |
9749 | } | |
9750 | else if (*p == '\0') | |
9751 | return 0; | |
9752 | else | |
9753 | return -1; | |
9754 | } | |
9755 | ||
9756 | /* Send a prepared I/O packet to the target and read its response. | |
9757 | The prepared packet is in the global RS->BUF before this function | |
9758 | is called, and the answer is there when we return. | |
9759 | ||
9760 | COMMAND_BYTES is the length of the request to send, which may include | |
9761 | binary data. WHICH_PACKET is the packet configuration to check | |
9762 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9763 | is set to the error number and -1 is returned. Otherwise the value | |
9764 | returned by the function is returned. | |
9765 | ||
9766 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9767 | attachment is expected; an error will be reported if there's a | |
9768 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9769 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9770 | attachment's length. */ | |
9771 | ||
9772 | static int | |
9773 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9774 | int *remote_errno, char **attachment, | |
9775 | int *attachment_len) | |
9776 | { | |
9777 | struct remote_state *rs = get_remote_state (); | |
9778 | int ret, bytes_read; | |
9779 | char *attachment_tmp; | |
9780 | ||
5d93a237 | 9781 | if (!rs->remote_desc |
f1838a98 | 9782 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) |
a6b151f1 DJ |
9783 | { |
9784 | *remote_errno = FILEIO_ENOSYS; | |
9785 | return -1; | |
9786 | } | |
9787 | ||
9788 | putpkt_binary (rs->buf, command_bytes); | |
9789 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9790 | ||
9791 | /* If it timed out, something is wrong. Don't try to parse the | |
9792 | buffer. */ | |
9793 | if (bytes_read < 0) | |
9794 | { | |
9795 | *remote_errno = FILEIO_EINVAL; | |
9796 | return -1; | |
9797 | } | |
9798 | ||
9799 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9800 | { | |
9801 | case PACKET_ERROR: | |
9802 | *remote_errno = FILEIO_EINVAL; | |
9803 | return -1; | |
9804 | case PACKET_UNKNOWN: | |
9805 | *remote_errno = FILEIO_ENOSYS; | |
9806 | return -1; | |
9807 | case PACKET_OK: | |
9808 | break; | |
9809 | } | |
9810 | ||
9811 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9812 | &attachment_tmp)) | |
9813 | { | |
9814 | *remote_errno = FILEIO_EINVAL; | |
9815 | return -1; | |
9816 | } | |
9817 | ||
9818 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9819 | if ((attachment_tmp == NULL && attachment != NULL) | |
9820 | || (attachment_tmp != NULL && attachment == NULL)) | |
9821 | { | |
9822 | *remote_errno = FILEIO_EINVAL; | |
9823 | return -1; | |
9824 | } | |
9825 | ||
9826 | /* If an attachment was found, it must point into the packet buffer; | |
9827 | work out how many bytes there were. */ | |
9828 | if (attachment_tmp != NULL) | |
9829 | { | |
9830 | *attachment = attachment_tmp; | |
9831 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9832 | } | |
9833 | ||
9834 | return ret; | |
9835 | } | |
9836 | ||
9837 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9838 | remote file descriptor, or -1 if an error occurs (and set | |
9839 | *REMOTE_ERRNO). */ | |
9840 | ||
9841 | static int | |
9842 | remote_hostio_open (const char *filename, int flags, int mode, | |
9843 | int *remote_errno) | |
9844 | { | |
9845 | struct remote_state *rs = get_remote_state (); | |
9846 | char *p = rs->buf; | |
9847 | int left = get_remote_packet_size () - 1; | |
9848 | ||
9849 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9850 | ||
9851 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9852 | strlen (filename)); | |
9853 | remote_buffer_add_string (&p, &left, ","); | |
9854 | ||
9855 | remote_buffer_add_int (&p, &left, flags); | |
9856 | remote_buffer_add_string (&p, &left, ","); | |
9857 | ||
9858 | remote_buffer_add_int (&p, &left, mode); | |
9859 | ||
9860 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9861 | remote_errno, NULL, NULL); | |
9862 | } | |
9863 | ||
9864 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9865 | Return the number of bytes written, or -1 if an error occurs (and | |
9866 | set *REMOTE_ERRNO). */ | |
9867 | ||
9868 | static int | |
9869 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9870 | ULONGEST offset, int *remote_errno) | |
9871 | { | |
9872 | struct remote_state *rs = get_remote_state (); | |
9873 | char *p = rs->buf; | |
9874 | int left = get_remote_packet_size (); | |
9875 | int out_len; | |
9876 | ||
9877 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9878 | ||
9879 | remote_buffer_add_int (&p, &left, fd); | |
9880 | remote_buffer_add_string (&p, &left, ","); | |
9881 | ||
9882 | remote_buffer_add_int (&p, &left, offset); | |
9883 | remote_buffer_add_string (&p, &left, ","); | |
9884 | ||
bc20a4af | 9885 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9886 | get_remote_packet_size () - (p - rs->buf)); |
9887 | ||
9888 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9889 | remote_errno, NULL, NULL); | |
9890 | } | |
9891 | ||
9892 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9893 | Return the number of bytes read, or -1 if an error occurs (and | |
9894 | set *REMOTE_ERRNO). */ | |
9895 | ||
9896 | static int | |
9897 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9898 | ULONGEST offset, int *remote_errno) | |
9899 | { | |
9900 | struct remote_state *rs = get_remote_state (); | |
9901 | char *p = rs->buf; | |
9902 | char *attachment; | |
9903 | int left = get_remote_packet_size (); | |
9904 | int ret, attachment_len; | |
9905 | int read_len; | |
9906 | ||
9907 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9908 | ||
9909 | remote_buffer_add_int (&p, &left, fd); | |
9910 | remote_buffer_add_string (&p, &left, ","); | |
9911 | ||
9912 | remote_buffer_add_int (&p, &left, len); | |
9913 | remote_buffer_add_string (&p, &left, ","); | |
9914 | ||
9915 | remote_buffer_add_int (&p, &left, offset); | |
9916 | ||
9917 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9918 | remote_errno, &attachment, | |
9919 | &attachment_len); | |
9920 | ||
9921 | if (ret < 0) | |
9922 | return ret; | |
9923 | ||
bc20a4af | 9924 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9925 | read_buf, len); |
9926 | if (read_len != ret) | |
9927 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9928 | ||
9929 | return ret; | |
9930 | } | |
9931 | ||
9932 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9933 | (and set *REMOTE_ERRNO). */ | |
9934 | ||
9935 | static int | |
9936 | remote_hostio_close (int fd, int *remote_errno) | |
9937 | { | |
9938 | struct remote_state *rs = get_remote_state (); | |
9939 | char *p = rs->buf; | |
9940 | int left = get_remote_packet_size () - 1; | |
9941 | ||
9942 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9943 | ||
9944 | remote_buffer_add_int (&p, &left, fd); | |
9945 | ||
9946 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9947 | remote_errno, NULL, NULL); | |
9948 | } | |
9949 | ||
9950 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9951 | occurs (and set *REMOTE_ERRNO). */ | |
9952 | ||
9953 | static int | |
9954 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9955 | { | |
9956 | struct remote_state *rs = get_remote_state (); | |
9957 | char *p = rs->buf; | |
9958 | int left = get_remote_packet_size () - 1; | |
9959 | ||
9960 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9961 | ||
9962 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9963 | strlen (filename)); | |
9964 | ||
9965 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9966 | remote_errno, NULL, NULL); | |
9967 | } | |
9968 | ||
b9e7b9c3 UW |
9969 | /* Read value of symbolic link FILENAME on the remote target. Return |
9970 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9971 | occurs (and set *REMOTE_ERRNO). */ | |
9972 | ||
9973 | static char * | |
9974 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9975 | { | |
9976 | struct remote_state *rs = get_remote_state (); | |
9977 | char *p = rs->buf; | |
9978 | char *attachment; | |
9979 | int left = get_remote_packet_size (); | |
9980 | int len, attachment_len; | |
9981 | int read_len; | |
9982 | char *ret; | |
9983 | ||
9984 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9985 | ||
9986 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9987 | strlen (filename)); | |
9988 | ||
9989 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9990 | remote_errno, &attachment, | |
9991 | &attachment_len); | |
9992 | ||
9993 | if (len < 0) | |
9994 | return NULL; | |
9995 | ||
9996 | ret = xmalloc (len + 1); | |
9997 | ||
bc20a4af PA |
9998 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
9999 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10000 | if (read_len != len) |
10001 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10002 | ||
10003 | ret[len] = '\0'; | |
10004 | return ret; | |
10005 | } | |
10006 | ||
a6b151f1 DJ |
10007 | static int |
10008 | remote_fileio_errno_to_host (int errnum) | |
10009 | { | |
10010 | switch (errnum) | |
10011 | { | |
10012 | case FILEIO_EPERM: | |
10013 | return EPERM; | |
10014 | case FILEIO_ENOENT: | |
10015 | return ENOENT; | |
10016 | case FILEIO_EINTR: | |
10017 | return EINTR; | |
10018 | case FILEIO_EIO: | |
10019 | return EIO; | |
10020 | case FILEIO_EBADF: | |
10021 | return EBADF; | |
10022 | case FILEIO_EACCES: | |
10023 | return EACCES; | |
10024 | case FILEIO_EFAULT: | |
10025 | return EFAULT; | |
10026 | case FILEIO_EBUSY: | |
10027 | return EBUSY; | |
10028 | case FILEIO_EEXIST: | |
10029 | return EEXIST; | |
10030 | case FILEIO_ENODEV: | |
10031 | return ENODEV; | |
10032 | case FILEIO_ENOTDIR: | |
10033 | return ENOTDIR; | |
10034 | case FILEIO_EISDIR: | |
10035 | return EISDIR; | |
10036 | case FILEIO_EINVAL: | |
10037 | return EINVAL; | |
10038 | case FILEIO_ENFILE: | |
10039 | return ENFILE; | |
10040 | case FILEIO_EMFILE: | |
10041 | return EMFILE; | |
10042 | case FILEIO_EFBIG: | |
10043 | return EFBIG; | |
10044 | case FILEIO_ENOSPC: | |
10045 | return ENOSPC; | |
10046 | case FILEIO_ESPIPE: | |
10047 | return ESPIPE; | |
10048 | case FILEIO_EROFS: | |
10049 | return EROFS; | |
10050 | case FILEIO_ENOSYS: | |
10051 | return ENOSYS; | |
10052 | case FILEIO_ENAMETOOLONG: | |
10053 | return ENAMETOOLONG; | |
10054 | } | |
10055 | return -1; | |
10056 | } | |
10057 | ||
10058 | static char * | |
10059 | remote_hostio_error (int errnum) | |
10060 | { | |
10061 | int host_error = remote_fileio_errno_to_host (errnum); | |
10062 | ||
10063 | if (host_error == -1) | |
10064 | error (_("Unknown remote I/O error %d"), errnum); | |
10065 | else | |
10066 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10067 | } | |
10068 | ||
a6b151f1 DJ |
10069 | static void |
10070 | remote_hostio_close_cleanup (void *opaque) | |
10071 | { | |
10072 | int fd = *(int *) opaque; | |
10073 | int remote_errno; | |
10074 | ||
10075 | remote_hostio_close (fd, &remote_errno); | |
10076 | } | |
10077 | ||
f1838a98 UW |
10078 | |
10079 | static void * | |
10080 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
10081 | { | |
10082 | const char *filename = bfd_get_filename (abfd); | |
10083 | int fd, remote_errno; | |
10084 | int *stream; | |
10085 | ||
10086 | gdb_assert (remote_filename_p (filename)); | |
10087 | ||
10088 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
10089 | if (fd == -1) | |
10090 | { | |
10091 | errno = remote_fileio_errno_to_host (remote_errno); | |
10092 | bfd_set_error (bfd_error_system_call); | |
10093 | return NULL; | |
10094 | } | |
10095 | ||
10096 | stream = xmalloc (sizeof (int)); | |
10097 | *stream = fd; | |
10098 | return stream; | |
10099 | } | |
10100 | ||
10101 | static int | |
10102 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
10103 | { | |
10104 | int fd = *(int *)stream; | |
10105 | int remote_errno; | |
10106 | ||
10107 | xfree (stream); | |
10108 | ||
10109 | /* Ignore errors on close; these may happen if the remote | |
10110 | connection was already torn down. */ | |
10111 | remote_hostio_close (fd, &remote_errno); | |
10112 | ||
39ed5604 JK |
10113 | /* Zero means success. */ |
10114 | return 0; | |
f1838a98 UW |
10115 | } |
10116 | ||
10117 | static file_ptr | |
10118 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
10119 | file_ptr nbytes, file_ptr offset) | |
10120 | { | |
10121 | int fd = *(int *)stream; | |
10122 | int remote_errno; | |
10123 | file_ptr pos, bytes; | |
10124 | ||
10125 | pos = 0; | |
10126 | while (nbytes > pos) | |
10127 | { | |
bc20a4af | 10128 | bytes = remote_hostio_pread (fd, (gdb_byte *) buf + pos, nbytes - pos, |
f1838a98 UW |
10129 | offset + pos, &remote_errno); |
10130 | if (bytes == 0) | |
10131 | /* Success, but no bytes, means end-of-file. */ | |
10132 | break; | |
10133 | if (bytes == -1) | |
10134 | { | |
10135 | errno = remote_fileio_errno_to_host (remote_errno); | |
10136 | bfd_set_error (bfd_error_system_call); | |
10137 | return -1; | |
10138 | } | |
10139 | ||
10140 | pos += bytes; | |
10141 | } | |
10142 | ||
10143 | return pos; | |
10144 | } | |
10145 | ||
10146 | static int | |
10147 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
10148 | { | |
10149 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
10150 | sb->st_size = INT_MAX; | |
10151 | return 0; | |
10152 | } | |
10153 | ||
10154 | int | |
10155 | remote_filename_p (const char *filename) | |
10156 | { | |
3736004f PA |
10157 | return strncmp (filename, |
10158 | REMOTE_SYSROOT_PREFIX, | |
10159 | sizeof (REMOTE_SYSROOT_PREFIX) - 1) == 0; | |
f1838a98 UW |
10160 | } |
10161 | ||
10162 | bfd * | |
10163 | remote_bfd_open (const char *remote_file, const char *target) | |
10164 | { | |
64c31149 TT |
10165 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
10166 | remote_bfd_iovec_open, NULL, | |
10167 | remote_bfd_iovec_pread, | |
10168 | remote_bfd_iovec_close, | |
10169 | remote_bfd_iovec_stat); | |
10170 | ||
a4453b7e | 10171 | return abfd; |
f1838a98 UW |
10172 | } |
10173 | ||
a6b151f1 DJ |
10174 | void |
10175 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10176 | { | |
10177 | struct cleanup *back_to, *close_cleanup; | |
10178 | int retcode, fd, remote_errno, bytes, io_size; | |
10179 | FILE *file; | |
10180 | gdb_byte *buffer; | |
10181 | int bytes_in_buffer; | |
10182 | int saw_eof; | |
10183 | ULONGEST offset; | |
5d93a237 | 10184 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10185 | |
5d93a237 | 10186 | if (!rs->remote_desc) |
a6b151f1 DJ |
10187 | error (_("command can only be used with remote target")); |
10188 | ||
614c279d | 10189 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10190 | if (file == NULL) |
10191 | perror_with_name (local_file); | |
7c8a8b04 | 10192 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10193 | |
10194 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
10195 | | FILEIO_O_TRUNC), | |
10196 | 0700, &remote_errno); | |
10197 | if (fd == -1) | |
10198 | remote_hostio_error (remote_errno); | |
10199 | ||
10200 | /* Send up to this many bytes at once. They won't all fit in the | |
10201 | remote packet limit, so we'll transfer slightly fewer. */ | |
10202 | io_size = get_remote_packet_size (); | |
10203 | buffer = xmalloc (io_size); | |
10204 | make_cleanup (xfree, buffer); | |
10205 | ||
10206 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10207 | ||
10208 | bytes_in_buffer = 0; | |
10209 | saw_eof = 0; | |
10210 | offset = 0; | |
10211 | while (bytes_in_buffer || !saw_eof) | |
10212 | { | |
10213 | if (!saw_eof) | |
10214 | { | |
3e43a32a MS |
10215 | bytes = fread (buffer + bytes_in_buffer, 1, |
10216 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10217 | file); |
10218 | if (bytes == 0) | |
10219 | { | |
10220 | if (ferror (file)) | |
10221 | error (_("Error reading %s."), local_file); | |
10222 | else | |
10223 | { | |
10224 | /* EOF. Unless there is something still in the | |
10225 | buffer from the last iteration, we are done. */ | |
10226 | saw_eof = 1; | |
10227 | if (bytes_in_buffer == 0) | |
10228 | break; | |
10229 | } | |
10230 | } | |
10231 | } | |
10232 | else | |
10233 | bytes = 0; | |
10234 | ||
10235 | bytes += bytes_in_buffer; | |
10236 | bytes_in_buffer = 0; | |
10237 | ||
3e43a32a MS |
10238 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
10239 | offset, &remote_errno); | |
a6b151f1 DJ |
10240 | |
10241 | if (retcode < 0) | |
10242 | remote_hostio_error (remote_errno); | |
10243 | else if (retcode == 0) | |
10244 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10245 | else if (retcode < bytes) | |
10246 | { | |
10247 | /* Short write. Save the rest of the read data for the next | |
10248 | write. */ | |
10249 | bytes_in_buffer = bytes - retcode; | |
10250 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10251 | } | |
10252 | ||
10253 | offset += retcode; | |
10254 | } | |
10255 | ||
10256 | discard_cleanups (close_cleanup); | |
10257 | if (remote_hostio_close (fd, &remote_errno)) | |
10258 | remote_hostio_error (remote_errno); | |
10259 | ||
10260 | if (from_tty) | |
10261 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10262 | do_cleanups (back_to); | |
10263 | } | |
10264 | ||
10265 | void | |
10266 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10267 | { | |
10268 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10269 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10270 | FILE *file; |
10271 | gdb_byte *buffer; | |
10272 | ULONGEST offset; | |
5d93a237 | 10273 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10274 | |
5d93a237 | 10275 | if (!rs->remote_desc) |
a6b151f1 DJ |
10276 | error (_("command can only be used with remote target")); |
10277 | ||
10278 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
10279 | if (fd == -1) | |
10280 | remote_hostio_error (remote_errno); | |
10281 | ||
614c279d | 10282 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10283 | if (file == NULL) |
10284 | perror_with_name (local_file); | |
7c8a8b04 | 10285 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10286 | |
10287 | /* Send up to this many bytes at once. They won't all fit in the | |
10288 | remote packet limit, so we'll transfer slightly fewer. */ | |
10289 | io_size = get_remote_packet_size (); | |
10290 | buffer = xmalloc (io_size); | |
10291 | make_cleanup (xfree, buffer); | |
10292 | ||
10293 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10294 | ||
10295 | offset = 0; | |
10296 | while (1) | |
10297 | { | |
10298 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
10299 | if (bytes == 0) | |
10300 | /* Success, but no bytes, means end-of-file. */ | |
10301 | break; | |
10302 | if (bytes == -1) | |
10303 | remote_hostio_error (remote_errno); | |
10304 | ||
10305 | offset += bytes; | |
10306 | ||
10307 | bytes = fwrite (buffer, 1, bytes, file); | |
10308 | if (bytes == 0) | |
10309 | perror_with_name (local_file); | |
10310 | } | |
10311 | ||
10312 | discard_cleanups (close_cleanup); | |
10313 | if (remote_hostio_close (fd, &remote_errno)) | |
10314 | remote_hostio_error (remote_errno); | |
10315 | ||
10316 | if (from_tty) | |
10317 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10318 | do_cleanups (back_to); | |
10319 | } | |
10320 | ||
10321 | void | |
10322 | remote_file_delete (const char *remote_file, int from_tty) | |
10323 | { | |
10324 | int retcode, remote_errno; | |
5d93a237 | 10325 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10326 | |
5d93a237 | 10327 | if (!rs->remote_desc) |
a6b151f1 DJ |
10328 | error (_("command can only be used with remote target")); |
10329 | ||
10330 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
10331 | if (retcode == -1) | |
10332 | remote_hostio_error (remote_errno); | |
10333 | ||
10334 | if (from_tty) | |
10335 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10336 | } | |
10337 | ||
10338 | static void | |
10339 | remote_put_command (char *args, int from_tty) | |
10340 | { | |
10341 | struct cleanup *back_to; | |
10342 | char **argv; | |
10343 | ||
d1a41061 PP |
10344 | if (args == NULL) |
10345 | error_no_arg (_("file to put")); | |
10346 | ||
10347 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10348 | back_to = make_cleanup_freeargv (argv); |
10349 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10350 | error (_("Invalid parameters to remote put")); | |
10351 | ||
10352 | remote_file_put (argv[0], argv[1], from_tty); | |
10353 | ||
10354 | do_cleanups (back_to); | |
10355 | } | |
10356 | ||
10357 | static void | |
10358 | remote_get_command (char *args, int from_tty) | |
10359 | { | |
10360 | struct cleanup *back_to; | |
10361 | char **argv; | |
10362 | ||
d1a41061 PP |
10363 | if (args == NULL) |
10364 | error_no_arg (_("file to get")); | |
10365 | ||
10366 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10367 | back_to = make_cleanup_freeargv (argv); |
10368 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10369 | error (_("Invalid parameters to remote get")); | |
10370 | ||
10371 | remote_file_get (argv[0], argv[1], from_tty); | |
10372 | ||
10373 | do_cleanups (back_to); | |
10374 | } | |
10375 | ||
10376 | static void | |
10377 | remote_delete_command (char *args, int from_tty) | |
10378 | { | |
10379 | struct cleanup *back_to; | |
10380 | char **argv; | |
10381 | ||
d1a41061 PP |
10382 | if (args == NULL) |
10383 | error_no_arg (_("file to delete")); | |
10384 | ||
10385 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10386 | back_to = make_cleanup_freeargv (argv); |
10387 | if (argv[0] == NULL || argv[1] != NULL) | |
10388 | error (_("Invalid parameters to remote delete")); | |
10389 | ||
10390 | remote_file_delete (argv[0], from_tty); | |
10391 | ||
10392 | do_cleanups (back_to); | |
10393 | } | |
10394 | ||
10395 | static void | |
10396 | remote_command (char *args, int from_tty) | |
10397 | { | |
10398 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10399 | } | |
10400 | ||
b2175913 MS |
10401 | static int |
10402 | remote_can_execute_reverse (void) | |
10403 | { | |
40ab02ce MS |
10404 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10405 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10406 | return 1; | |
10407 | else | |
10408 | return 0; | |
b2175913 MS |
10409 | } |
10410 | ||
74531fed PA |
10411 | static int |
10412 | remote_supports_non_stop (void) | |
10413 | { | |
10414 | return 1; | |
10415 | } | |
10416 | ||
03583c20 UW |
10417 | static int |
10418 | remote_supports_disable_randomization (void) | |
10419 | { | |
10420 | /* Only supported in extended mode. */ | |
10421 | return 0; | |
10422 | } | |
10423 | ||
8a305172 PA |
10424 | static int |
10425 | remote_supports_multi_process (void) | |
10426 | { | |
10427 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10428 | |
901f9912 UW |
10429 | /* Only extended-remote handles being attached to multiple |
10430 | processes, even though plain remote can use the multi-process | |
10431 | thread id extensions, so that GDB knows the target process's | |
10432 | PID. */ | |
10433 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10434 | } |
10435 | ||
70221824 | 10436 | static int |
782b2b07 SS |
10437 | remote_supports_cond_tracepoints (void) |
10438 | { | |
10439 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10440 | |
782b2b07 SS |
10441 | return rs->cond_tracepoints; |
10442 | } | |
10443 | ||
3788aec7 LM |
10444 | static int |
10445 | remote_supports_cond_breakpoints (void) | |
10446 | { | |
10447 | struct remote_state *rs = get_remote_state (); | |
10448 | ||
10449 | return rs->cond_breakpoints; | |
10450 | } | |
10451 | ||
70221824 | 10452 | static int |
7a697b8d SS |
10453 | remote_supports_fast_tracepoints (void) |
10454 | { | |
10455 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10456 | |
7a697b8d SS |
10457 | return rs->fast_tracepoints; |
10458 | } | |
10459 | ||
0fb4aa4b PA |
10460 | static int |
10461 | remote_supports_static_tracepoints (void) | |
10462 | { | |
10463 | struct remote_state *rs = get_remote_state (); | |
10464 | ||
10465 | return rs->static_tracepoints; | |
10466 | } | |
10467 | ||
1e4d1764 YQ |
10468 | static int |
10469 | remote_supports_install_in_trace (void) | |
10470 | { | |
10471 | struct remote_state *rs = get_remote_state (); | |
10472 | ||
10473 | return rs->install_in_trace; | |
10474 | } | |
10475 | ||
d248b706 KY |
10476 | static int |
10477 | remote_supports_enable_disable_tracepoint (void) | |
10478 | { | |
10479 | struct remote_state *rs = get_remote_state (); | |
10480 | ||
10481 | return rs->enable_disable_tracepoints; | |
10482 | } | |
10483 | ||
3065dfb6 SS |
10484 | static int |
10485 | remote_supports_string_tracing (void) | |
10486 | { | |
10487 | struct remote_state *rs = get_remote_state (); | |
10488 | ||
10489 | return rs->string_tracing; | |
10490 | } | |
10491 | ||
d3ce09f5 SS |
10492 | static int |
10493 | remote_can_run_breakpoint_commands (void) | |
10494 | { | |
10495 | struct remote_state *rs = get_remote_state (); | |
10496 | ||
10497 | return rs->breakpoint_commands; | |
10498 | } | |
10499 | ||
35b1e5cc | 10500 | static void |
ad91cd99 | 10501 | remote_trace_init (void) |
35b1e5cc SS |
10502 | { |
10503 | putpkt ("QTinit"); | |
10504 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10505 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10506 | error (_("Target does not support this command.")); |
10507 | } | |
10508 | ||
10509 | static void free_actions_list (char **actions_list); | |
10510 | static void free_actions_list_cleanup_wrapper (void *); | |
10511 | static void | |
10512 | free_actions_list_cleanup_wrapper (void *al) | |
10513 | { | |
10514 | free_actions_list (al); | |
10515 | } | |
10516 | ||
10517 | static void | |
10518 | free_actions_list (char **actions_list) | |
10519 | { | |
10520 | int ndx; | |
10521 | ||
10522 | if (actions_list == 0) | |
10523 | return; | |
10524 | ||
10525 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10526 | xfree (actions_list[ndx]); | |
10527 | ||
10528 | xfree (actions_list); | |
10529 | } | |
10530 | ||
409873ef SS |
10531 | /* Recursive routine to walk through command list including loops, and |
10532 | download packets for each command. */ | |
10533 | ||
10534 | static void | |
10535 | remote_download_command_source (int num, ULONGEST addr, | |
10536 | struct command_line *cmds) | |
10537 | { | |
10538 | struct remote_state *rs = get_remote_state (); | |
10539 | struct command_line *cmd; | |
10540 | ||
10541 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10542 | { | |
0df8b418 | 10543 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10544 | strcpy (rs->buf, "QTDPsrc:"); |
10545 | encode_source_string (num, addr, "cmd", cmd->line, | |
10546 | rs->buf + strlen (rs->buf), | |
10547 | rs->buf_size - strlen (rs->buf)); | |
10548 | putpkt (rs->buf); | |
10549 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10550 | if (strcmp (target_buf, "OK")) | |
10551 | warning (_("Target does not support source download.")); | |
10552 | ||
10553 | if (cmd->control_type == while_control | |
10554 | || cmd->control_type == while_stepping_control) | |
10555 | { | |
10556 | remote_download_command_source (num, addr, *cmd->body_list); | |
10557 | ||
0df8b418 | 10558 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10559 | strcpy (rs->buf, "QTDPsrc:"); |
10560 | encode_source_string (num, addr, "cmd", "end", | |
10561 | rs->buf + strlen (rs->buf), | |
10562 | rs->buf_size - strlen (rs->buf)); | |
10563 | putpkt (rs->buf); | |
10564 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10565 | if (strcmp (target_buf, "OK")) | |
10566 | warning (_("Target does not support source download.")); | |
10567 | } | |
10568 | } | |
10569 | } | |
10570 | ||
35b1e5cc | 10571 | static void |
e8ba3115 | 10572 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10573 | { |
bba74b36 | 10574 | #define BUF_SIZE 2048 |
e8ba3115 | 10575 | |
35b1e5cc | 10576 | CORE_ADDR tpaddr; |
409873ef | 10577 | char addrbuf[40]; |
bba74b36 | 10578 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10579 | char **tdp_actions; |
10580 | char **stepping_actions; | |
10581 | int ndx; | |
10582 | struct cleanup *old_chain = NULL; | |
10583 | struct agent_expr *aexpr; | |
10584 | struct cleanup *aexpr_chain = NULL; | |
10585 | char *pkt; | |
e8ba3115 | 10586 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10587 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10588 | |
dc673c81 | 10589 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10590 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10591 | tdp_actions); | |
10592 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10593 | stepping_actions); | |
10594 | ||
10595 | tpaddr = loc->address; | |
10596 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10597 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10598 | addrbuf, /* address */ | |
10599 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10600 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10601 | /* Fast tracepoints are mostly handled by the target, but we can |
10602 | tell the target how big of an instruction block should be moved | |
10603 | around. */ | |
10604 | if (b->type == bp_fast_tracepoint) | |
10605 | { | |
10606 | /* Only test for support at download time; we may not know | |
10607 | target capabilities at definition time. */ | |
10608 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10609 | { |
e8ba3115 | 10610 | int isize; |
35b1e5cc | 10611 | |
f5656ead | 10612 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10613 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10614 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10615 | isize); | |
35b1e5cc | 10616 | else |
e8ba3115 YQ |
10617 | /* If it passed validation at definition but fails now, |
10618 | something is very wrong. */ | |
10619 | internal_error (__FILE__, __LINE__, | |
10620 | _("Fast tracepoint not " | |
10621 | "valid during download")); | |
35b1e5cc | 10622 | } |
e8ba3115 YQ |
10623 | else |
10624 | /* Fast tracepoints are functionally identical to regular | |
10625 | tracepoints, so don't take lack of support as a reason to | |
10626 | give up on the trace run. */ | |
10627 | warning (_("Target does not support fast tracepoints, " | |
10628 | "downloading %d as regular tracepoint"), b->number); | |
10629 | } | |
10630 | else if (b->type == bp_static_tracepoint) | |
10631 | { | |
10632 | /* Only test for support at download time; we may not know | |
10633 | target capabilities at definition time. */ | |
10634 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10635 | { |
e8ba3115 | 10636 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10637 | |
e8ba3115 YQ |
10638 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10639 | strcat (buf, ":S"); | |
0fb4aa4b | 10640 | else |
e8ba3115 | 10641 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10642 | } |
e8ba3115 YQ |
10643 | else |
10644 | /* Fast tracepoints are functionally identical to regular | |
10645 | tracepoints, so don't take lack of support as a reason | |
10646 | to give up on the trace run. */ | |
10647 | error (_("Target does not support static tracepoints")); | |
10648 | } | |
10649 | /* If the tracepoint has a conditional, make it into an agent | |
10650 | expression and append to the definition. */ | |
10651 | if (loc->cond) | |
10652 | { | |
10653 | /* Only test support at download time, we may not know target | |
10654 | capabilities at definition time. */ | |
10655 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10656 | { |
e8ba3115 YQ |
10657 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10658 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10659 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10660 | aexpr->len); | |
e8ba3115 YQ |
10661 | pkt = buf + strlen (buf); |
10662 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10663 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10664 | *pkt = '\0'; | |
10665 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10666 | } |
e8ba3115 YQ |
10667 | else |
10668 | warning (_("Target does not support conditional tracepoints, " | |
10669 | "ignoring tp %d cond"), b->number); | |
10670 | } | |
35b1e5cc | 10671 | |
d9b3f62e | 10672 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10673 | strcat (buf, "-"); |
10674 | putpkt (buf); | |
10675 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10676 | if (strcmp (target_buf, "OK")) | |
10677 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10678 | |
e8ba3115 YQ |
10679 | /* do_single_steps (t); */ |
10680 | if (tdp_actions) | |
10681 | { | |
10682 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10683 | { |
e8ba3115 | 10684 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10685 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10686 | b->number, addrbuf, /* address */ | |
10687 | tdp_actions[ndx], | |
10688 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10689 | ? '-' : 0)); | |
e8ba3115 YQ |
10690 | putpkt (buf); |
10691 | remote_get_noisy_reply (&target_buf, | |
10692 | &target_buf_size); | |
10693 | if (strcmp (target_buf, "OK")) | |
10694 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10695 | } |
e8ba3115 YQ |
10696 | } |
10697 | if (stepping_actions) | |
10698 | { | |
10699 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10700 | { |
e8ba3115 | 10701 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10702 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10703 | b->number, addrbuf, /* address */ | |
10704 | ((ndx == 0) ? "S" : ""), | |
10705 | stepping_actions[ndx], | |
10706 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10707 | putpkt (buf); |
10708 | remote_get_noisy_reply (&target_buf, | |
10709 | &target_buf_size); | |
10710 | if (strcmp (target_buf, "OK")) | |
10711 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10712 | } |
e8ba3115 | 10713 | } |
409873ef | 10714 | |
e8ba3115 YQ |
10715 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10716 | == PACKET_ENABLE) | |
10717 | { | |
10718 | if (b->addr_string) | |
409873ef | 10719 | { |
e8ba3115 YQ |
10720 | strcpy (buf, "QTDPsrc:"); |
10721 | encode_source_string (b->number, loc->address, | |
10722 | "at", b->addr_string, buf + strlen (buf), | |
10723 | 2048 - strlen (buf)); | |
409873ef | 10724 | |
e8ba3115 YQ |
10725 | putpkt (buf); |
10726 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10727 | if (strcmp (target_buf, "OK")) | |
10728 | warning (_("Target does not support source download.")); | |
409873ef | 10729 | } |
e8ba3115 YQ |
10730 | if (b->cond_string) |
10731 | { | |
10732 | strcpy (buf, "QTDPsrc:"); | |
10733 | encode_source_string (b->number, loc->address, | |
10734 | "cond", b->cond_string, buf + strlen (buf), | |
10735 | 2048 - strlen (buf)); | |
10736 | putpkt (buf); | |
10737 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10738 | if (strcmp (target_buf, "OK")) | |
10739 | warning (_("Target does not support source download.")); | |
10740 | } | |
10741 | remote_download_command_source (b->number, loc->address, | |
10742 | breakpoint_commands (b)); | |
35b1e5cc | 10743 | } |
e8ba3115 YQ |
10744 | |
10745 | do_cleanups (old_chain); | |
35b1e5cc SS |
10746 | } |
10747 | ||
1e4d1764 YQ |
10748 | static int |
10749 | remote_can_download_tracepoint (void) | |
10750 | { | |
1e51243a PA |
10751 | struct remote_state *rs = get_remote_state (); |
10752 | struct trace_status *ts; | |
10753 | int status; | |
10754 | ||
10755 | /* Don't try to install tracepoints until we've relocated our | |
10756 | symbols, and fetched and merged the target's tracepoint list with | |
10757 | ours. */ | |
10758 | if (rs->starting_up) | |
10759 | return 0; | |
10760 | ||
10761 | ts = current_trace_status (); | |
10762 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10763 | |
10764 | if (status == -1 || !ts->running_known || !ts->running) | |
10765 | return 0; | |
10766 | ||
10767 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10768 | installing tracepoint in trace, we have to return. */ | |
10769 | if (!remote_supports_install_in_trace ()) | |
10770 | return 0; | |
10771 | ||
10772 | return 1; | |
10773 | } | |
10774 | ||
10775 | ||
35b1e5cc SS |
10776 | static void |
10777 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10778 | { | |
10779 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10780 | char *p; |
35b1e5cc | 10781 | |
bba74b36 YQ |
10782 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10783 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10784 | tsv->builtin); | |
00bf0b85 SS |
10785 | p = rs->buf + strlen (rs->buf); |
10786 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10787 | error (_("Trace state variable name too long for tsv definition packet")); | |
10788 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10789 | *p++ = '\0'; | |
35b1e5cc SS |
10790 | putpkt (rs->buf); |
10791 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10792 | if (*target_buf == '\0') |
10793 | error (_("Target does not support this command.")); | |
10794 | if (strcmp (target_buf, "OK") != 0) | |
10795 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10796 | } |
10797 | ||
d248b706 KY |
10798 | static void |
10799 | remote_enable_tracepoint (struct bp_location *location) | |
10800 | { | |
10801 | struct remote_state *rs = get_remote_state (); | |
10802 | char addr_buf[40]; | |
10803 | ||
10804 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10805 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10806 | location->owner->number, addr_buf); | |
d248b706 KY |
10807 | putpkt (rs->buf); |
10808 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10809 | if (*rs->buf == '\0') | |
10810 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10811 | if (strcmp (rs->buf, "OK") != 0) | |
10812 | error (_("Error on target while enabling tracepoint.")); | |
10813 | } | |
10814 | ||
10815 | static void | |
10816 | remote_disable_tracepoint (struct bp_location *location) | |
10817 | { | |
10818 | struct remote_state *rs = get_remote_state (); | |
10819 | char addr_buf[40]; | |
10820 | ||
10821 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10822 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10823 | location->owner->number, addr_buf); | |
d248b706 KY |
10824 | putpkt (rs->buf); |
10825 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10826 | if (*rs->buf == '\0') | |
10827 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10828 | if (strcmp (rs->buf, "OK") != 0) | |
10829 | error (_("Error on target while disabling tracepoint.")); | |
10830 | } | |
10831 | ||
35b1e5cc | 10832 | static void |
ad91cd99 | 10833 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10834 | { |
10835 | asection *s; | |
81b9b86e | 10836 | bfd *abfd = NULL; |
35b1e5cc | 10837 | bfd_size_type size; |
608bcef2 | 10838 | bfd_vma vma; |
35b1e5cc | 10839 | int anysecs = 0; |
c2fa21f1 | 10840 | int offset = 0; |
35b1e5cc SS |
10841 | |
10842 | if (!exec_bfd) | |
10843 | return; /* No information to give. */ | |
10844 | ||
10845 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10846 | offset = strlen (target_buf); |
35b1e5cc SS |
10847 | for (s = exec_bfd->sections; s; s = s->next) |
10848 | { | |
10849 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10850 | int sec_length; |
35b1e5cc SS |
10851 | |
10852 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10853 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10854 | (s->flags & SEC_READONLY) == 0) |
10855 | continue; | |
10856 | ||
10857 | anysecs = 1; | |
81b9b86e | 10858 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10859 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10860 | sprintf_vma (tmp1, vma); |
10861 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10862 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10863 | if (offset + sec_length + 1 > target_buf_size) | |
10864 | { | |
864ac8a7 HZ |
10865 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10866 | != PACKET_ENABLE) | |
10867 | warning (_("\ | |
c2fa21f1 HZ |
10868 | Too many sections for read-only sections definition packet.")); |
10869 | break; | |
10870 | } | |
bba74b36 YQ |
10871 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10872 | tmp1, tmp2); | |
c2fa21f1 | 10873 | offset += sec_length; |
35b1e5cc SS |
10874 | } |
10875 | if (anysecs) | |
10876 | { | |
10877 | putpkt (target_buf); | |
10878 | getpkt (&target_buf, &target_buf_size, 0); | |
10879 | } | |
10880 | } | |
10881 | ||
10882 | static void | |
ad91cd99 | 10883 | remote_trace_start (void) |
35b1e5cc SS |
10884 | { |
10885 | putpkt ("QTStart"); | |
10886 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10887 | if (*target_buf == '\0') |
10888 | error (_("Target does not support this command.")); | |
10889 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10890 | error (_("Bogus reply from target: %s"), target_buf); |
10891 | } | |
10892 | ||
10893 | static int | |
00bf0b85 | 10894 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10895 | { |
953b98d1 | 10896 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10897 | char *p = NULL; |
0df8b418 | 10898 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10899 | extern int trace_regblock_size; |
67f41397 | 10900 | volatile struct gdb_exception ex; |
bd3eecc3 PA |
10901 | enum packet_result result; |
10902 | ||
10903 | if (remote_protocol_packets[PACKET_qTStatus].support == PACKET_DISABLE) | |
10904 | return -1; | |
a744cf53 | 10905 | |
00bf0b85 SS |
10906 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10907 | ||
049dc89b JK |
10908 | putpkt ("qTStatus"); |
10909 | ||
67f41397 JK |
10910 | TRY_CATCH (ex, RETURN_MASK_ERROR) |
10911 | { | |
10912 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10913 | } | |
10914 | if (ex.reason < 0) | |
10915 | { | |
598d3636 JK |
10916 | if (ex.error != TARGET_CLOSE_ERROR) |
10917 | { | |
10918 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10919 | return -1; | |
10920 | } | |
10921 | throw_exception (ex); | |
67f41397 | 10922 | } |
00bf0b85 | 10923 | |
bd3eecc3 PA |
10924 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
10925 | ||
00bf0b85 | 10926 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 10927 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 10928 | return -1; |
35b1e5cc | 10929 | |
00bf0b85 | 10930 | /* We're working with a live target. */ |
f5911ea1 | 10931 | ts->filename = NULL; |
00bf0b85 | 10932 | |
00bf0b85 | 10933 | if (*p++ != 'T') |
35b1e5cc SS |
10934 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10935 | ||
84cebc4a YQ |
10936 | /* Function 'parse_trace_status' sets default value of each field of |
10937 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10938 | parse_trace_status (p, ts); |
10939 | ||
10940 | return ts->running; | |
35b1e5cc SS |
10941 | } |
10942 | ||
70221824 | 10943 | static void |
f196051f SS |
10944 | remote_get_tracepoint_status (struct breakpoint *bp, |
10945 | struct uploaded_tp *utp) | |
10946 | { | |
10947 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10948 | char *reply; |
10949 | struct bp_location *loc; | |
10950 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10951 | size_t size = get_remote_packet_size (); |
f196051f SS |
10952 | |
10953 | if (tp) | |
10954 | { | |
10955 | tp->base.hit_count = 0; | |
10956 | tp->traceframe_usage = 0; | |
10957 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10958 | { | |
10959 | /* If the tracepoint was never downloaded, don't go asking for | |
10960 | any status. */ | |
10961 | if (tp->number_on_target == 0) | |
10962 | continue; | |
bba74b36 YQ |
10963 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10964 | phex_nz (loc->address, 0)); | |
f196051f SS |
10965 | putpkt (rs->buf); |
10966 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10967 | if (reply && *reply) | |
10968 | { | |
10969 | if (*reply == 'V') | |
10970 | parse_tracepoint_status (reply + 1, bp, utp); | |
10971 | } | |
10972 | } | |
10973 | } | |
10974 | else if (utp) | |
10975 | { | |
10976 | utp->hit_count = 0; | |
10977 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10978 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10979 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10980 | putpkt (rs->buf); |
10981 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10982 | if (reply && *reply) | |
10983 | { | |
10984 | if (*reply == 'V') | |
10985 | parse_tracepoint_status (reply + 1, bp, utp); | |
10986 | } | |
10987 | } | |
10988 | } | |
10989 | ||
35b1e5cc | 10990 | static void |
ad91cd99 | 10991 | remote_trace_stop (void) |
35b1e5cc SS |
10992 | { |
10993 | putpkt ("QTStop"); | |
10994 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10995 | if (*target_buf == '\0') |
10996 | error (_("Target does not support this command.")); | |
10997 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10998 | error (_("Bogus reply from target: %s"), target_buf); |
10999 | } | |
11000 | ||
11001 | static int | |
11002 | remote_trace_find (enum trace_find_type type, int num, | |
cc5925ad | 11003 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11004 | int *tpp) |
11005 | { | |
11006 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11007 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11008 | char *p, *reply; |
11009 | int target_frameno = -1, target_tracept = -1; | |
11010 | ||
e6e4e701 PA |
11011 | /* Lookups other than by absolute frame number depend on the current |
11012 | trace selected, so make sure it is correct on the remote end | |
11013 | first. */ | |
11014 | if (type != tfind_number) | |
11015 | set_remote_traceframe (); | |
11016 | ||
35b1e5cc SS |
11017 | p = rs->buf; |
11018 | strcpy (p, "QTFrame:"); | |
11019 | p = strchr (p, '\0'); | |
11020 | switch (type) | |
11021 | { | |
11022 | case tfind_number: | |
bba74b36 | 11023 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11024 | break; |
11025 | case tfind_pc: | |
bba74b36 | 11026 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11027 | break; |
11028 | case tfind_tp: | |
bba74b36 | 11029 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11030 | break; |
11031 | case tfind_range: | |
bba74b36 YQ |
11032 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11033 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11034 | break; |
11035 | case tfind_outside: | |
bba74b36 YQ |
11036 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11037 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11038 | break; |
11039 | default: | |
9b20d036 | 11040 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11041 | } |
11042 | ||
11043 | putpkt (rs->buf); | |
2f65bcb7 | 11044 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11045 | if (*reply == '\0') |
11046 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11047 | |
11048 | while (reply && *reply) | |
11049 | switch (*reply) | |
11050 | { | |
11051 | case 'F': | |
f197e0f1 VP |
11052 | p = ++reply; |
11053 | target_frameno = (int) strtol (p, &reply, 16); | |
11054 | if (reply == p) | |
11055 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11056 | /* Don't update our remote traceframe number cache on failure |
11057 | to select a remote traceframe. */ | |
f197e0f1 VP |
11058 | if (target_frameno == -1) |
11059 | return -1; | |
35b1e5cc SS |
11060 | break; |
11061 | case 'T': | |
f197e0f1 VP |
11062 | p = ++reply; |
11063 | target_tracept = (int) strtol (p, &reply, 16); | |
11064 | if (reply == p) | |
11065 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11066 | break; |
11067 | case 'O': /* "OK"? */ | |
11068 | if (reply[1] == 'K' && reply[2] == '\0') | |
11069 | reply += 2; | |
11070 | else | |
11071 | error (_("Bogus reply from target: %s"), reply); | |
11072 | break; | |
11073 | default: | |
11074 | error (_("Bogus reply from target: %s"), reply); | |
11075 | } | |
11076 | if (tpp) | |
11077 | *tpp = target_tracept; | |
e6e4e701 | 11078 | |
262e1174 | 11079 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11080 | return target_frameno; |
11081 | } | |
11082 | ||
11083 | static int | |
11084 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
11085 | { | |
11086 | struct remote_state *rs = get_remote_state (); | |
11087 | char *reply; | |
11088 | ULONGEST uval; | |
11089 | ||
e6e4e701 PA |
11090 | set_remote_traceframe (); |
11091 | ||
bba74b36 | 11092 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11093 | putpkt (rs->buf); |
11094 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11095 | if (reply && *reply) | |
11096 | { | |
11097 | if (*reply == 'V') | |
11098 | { | |
11099 | unpack_varlen_hex (reply + 1, &uval); | |
11100 | *val = (LONGEST) uval; | |
11101 | return 1; | |
11102 | } | |
11103 | } | |
11104 | return 0; | |
11105 | } | |
11106 | ||
00bf0b85 | 11107 | static int |
011aacb0 | 11108 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
11109 | { |
11110 | struct remote_state *rs = get_remote_state (); | |
11111 | char *p, *reply; | |
11112 | ||
11113 | p = rs->buf; | |
11114 | strcpy (p, "QTSave:"); | |
11115 | p += strlen (p); | |
11116 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11117 | error (_("Remote file name too long for trace save packet")); | |
11118 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
11119 | *p++ = '\0'; | |
11120 | putpkt (rs->buf); | |
ad91cd99 | 11121 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11122 | if (*reply == '\0') |
ad91cd99 PA |
11123 | error (_("Target does not support this command.")); |
11124 | if (strcmp (reply, "OK") != 0) | |
11125 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11126 | return 0; |
11127 | } | |
11128 | ||
11129 | /* This is basically a memory transfer, but needs to be its own packet | |
11130 | because we don't know how the target actually organizes its trace | |
11131 | memory, plus we want to be able to ask for as much as possible, but | |
11132 | not be unhappy if we don't get as much as we ask for. */ | |
11133 | ||
11134 | static LONGEST | |
11135 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
11136 | { | |
11137 | struct remote_state *rs = get_remote_state (); | |
11138 | char *reply; | |
11139 | char *p; | |
11140 | int rslt; | |
11141 | ||
11142 | p = rs->buf; | |
11143 | strcpy (p, "qTBuffer:"); | |
11144 | p += strlen (p); | |
11145 | p += hexnumstr (p, offset); | |
11146 | *p++ = ','; | |
11147 | p += hexnumstr (p, len); | |
11148 | *p++ = '\0'; | |
11149 | ||
11150 | putpkt (rs->buf); | |
11151 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11152 | if (reply && *reply) | |
11153 | { | |
11154 | /* 'l' by itself means we're at the end of the buffer and | |
11155 | there is nothing more to get. */ | |
11156 | if (*reply == 'l') | |
11157 | return 0; | |
11158 | ||
11159 | /* Convert the reply into binary. Limit the number of bytes to | |
11160 | convert according to our passed-in buffer size, rather than | |
11161 | what was returned in the packet; if the target is | |
11162 | unexpectedly generous and gives us a bigger reply than we | |
11163 | asked for, we don't want to crash. */ | |
11164 | rslt = hex2bin (target_buf, buf, len); | |
11165 | return rslt; | |
11166 | } | |
11167 | ||
11168 | /* Something went wrong, flag as an error. */ | |
11169 | return -1; | |
11170 | } | |
11171 | ||
35b1e5cc SS |
11172 | static void |
11173 | remote_set_disconnected_tracing (int val) | |
11174 | { | |
11175 | struct remote_state *rs = get_remote_state (); | |
11176 | ||
33da3f1c SS |
11177 | if (rs->disconnected_tracing) |
11178 | { | |
ad91cd99 PA |
11179 | char *reply; |
11180 | ||
bba74b36 | 11181 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11182 | putpkt (rs->buf); |
ad91cd99 PA |
11183 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11184 | if (*reply == '\0') | |
33da3f1c | 11185 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11186 | if (strcmp (reply, "OK") != 0) |
11187 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11188 | } |
11189 | else if (val) | |
11190 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11191 | } |
11192 | ||
dc146f7c VP |
11193 | static int |
11194 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11195 | { | |
11196 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11197 | |
dc146f7c VP |
11198 | if (info && info->private) |
11199 | return info->private->core; | |
11200 | return -1; | |
11201 | } | |
11202 | ||
4daf5ac0 SS |
11203 | static void |
11204 | remote_set_circular_trace_buffer (int val) | |
11205 | { | |
11206 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11207 | char *reply; |
4daf5ac0 | 11208 | |
bba74b36 | 11209 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11210 | putpkt (rs->buf); |
ad91cd99 PA |
11211 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11212 | if (*reply == '\0') | |
4daf5ac0 | 11213 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11214 | if (strcmp (reply, "OK") != 0) |
11215 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11216 | } |
11217 | ||
b3b9301e PA |
11218 | static struct traceframe_info * |
11219 | remote_traceframe_info (void) | |
11220 | { | |
11221 | char *text; | |
11222 | ||
6c177e28 YQ |
11223 | /* If current traceframe is not selected, don't bother the remote |
11224 | stub. */ | |
11225 | if (get_traceframe_number () < 0) | |
11226 | return NULL; | |
11227 | ||
b3b9301e PA |
11228 | text = target_read_stralloc (¤t_target, |
11229 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11230 | if (text != NULL) | |
11231 | { | |
11232 | struct traceframe_info *info; | |
11233 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11234 | ||
11235 | info = parse_traceframe_info (text); | |
11236 | do_cleanups (back_to); | |
11237 | return info; | |
11238 | } | |
11239 | ||
11240 | return NULL; | |
11241 | } | |
11242 | ||
405f8e94 SS |
11243 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11244 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11245 | if the packet is not supported, and 0 if the minimum instruction | |
11246 | length is unknown. */ | |
11247 | ||
11248 | static int | |
11249 | remote_get_min_fast_tracepoint_insn_len (void) | |
11250 | { | |
11251 | struct remote_state *rs = get_remote_state (); | |
11252 | char *reply; | |
11253 | ||
e886a173 PA |
11254 | /* If we're not debugging a process yet, the IPA can't be |
11255 | loaded. */ | |
11256 | if (!target_has_execution) | |
11257 | return 0; | |
11258 | ||
11259 | /* Make sure the remote is pointing at the right process. */ | |
11260 | set_general_process (); | |
11261 | ||
bba74b36 | 11262 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11263 | putpkt (rs->buf); |
11264 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11265 | if (*reply == '\0') | |
11266 | return -1; | |
11267 | else | |
11268 | { | |
11269 | ULONGEST min_insn_len; | |
11270 | ||
11271 | unpack_varlen_hex (reply, &min_insn_len); | |
11272 | ||
11273 | return (int) min_insn_len; | |
11274 | } | |
11275 | } | |
11276 | ||
f6f899bf HAQ |
11277 | static void |
11278 | remote_set_trace_buffer_size (LONGEST val) | |
11279 | { | |
90585175 HAQ |
11280 | if (remote_protocol_packets[PACKET_QTBuffer_size].support |
11281 | != PACKET_DISABLE) | |
f6f899bf HAQ |
11282 | { |
11283 | struct remote_state *rs = get_remote_state (); | |
11284 | char *buf = rs->buf; | |
11285 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11286 | enum packet_result result; | |
11287 | ||
11288 | gdb_assert (val >= 0 || val == -1); | |
11289 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11290 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11291 | if (val < 0) | |
11292 | { | |
11293 | *buf++ = '-'; | |
11294 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11295 | } | |
11296 | else | |
11297 | buf += hexnumstr (buf, (ULONGEST) val); | |
11298 | ||
11299 | putpkt (rs->buf); | |
11300 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11301 | result = packet_ok (rs->buf, | |
11302 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11303 | ||
11304 | if (result != PACKET_OK) | |
11305 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11306 | } | |
11307 | } | |
11308 | ||
f196051f | 11309 | static int |
ca623f82 TT |
11310 | remote_set_trace_notes (const char *user, const char *notes, |
11311 | const char *stop_notes) | |
f196051f SS |
11312 | { |
11313 | struct remote_state *rs = get_remote_state (); | |
11314 | char *reply; | |
11315 | char *buf = rs->buf; | |
11316 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11317 | int nbytes; | |
11318 | ||
11319 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11320 | if (user) | |
11321 | { | |
11322 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
bc20a4af | 11323 | nbytes = bin2hex ((gdb_byte *) user, buf, 0); |
f196051f SS |
11324 | buf += 2 * nbytes; |
11325 | *buf++ = ';'; | |
11326 | } | |
11327 | if (notes) | |
11328 | { | |
11329 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
bc20a4af | 11330 | nbytes = bin2hex ((gdb_byte *) notes, buf, 0); |
f196051f SS |
11331 | buf += 2 * nbytes; |
11332 | *buf++ = ';'; | |
11333 | } | |
11334 | if (stop_notes) | |
11335 | { | |
11336 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
bc20a4af | 11337 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, 0); |
f196051f SS |
11338 | buf += 2 * nbytes; |
11339 | *buf++ = ';'; | |
11340 | } | |
11341 | /* Ensure the buffer is terminated. */ | |
11342 | *buf = '\0'; | |
11343 | ||
11344 | putpkt (rs->buf); | |
11345 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11346 | if (*reply == '\0') | |
11347 | return 0; | |
11348 | ||
11349 | if (strcmp (reply, "OK") != 0) | |
11350 | error (_("Bogus reply from target: %s"), reply); | |
11351 | ||
11352 | return 1; | |
11353 | } | |
11354 | ||
d1feda86 YQ |
11355 | static int |
11356 | remote_use_agent (int use) | |
11357 | { | |
11358 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
11359 | { | |
11360 | struct remote_state *rs = get_remote_state (); | |
11361 | ||
11362 | /* If the stub supports QAgent. */ | |
bba74b36 | 11363 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11364 | putpkt (rs->buf); |
11365 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11366 | ||
11367 | if (strcmp (rs->buf, "OK") == 0) | |
11368 | { | |
11369 | use_agent = use; | |
11370 | return 1; | |
11371 | } | |
11372 | } | |
11373 | ||
11374 | return 0; | |
11375 | } | |
11376 | ||
11377 | static int | |
11378 | remote_can_use_agent (void) | |
11379 | { | |
11380 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11381 | } | |
11382 | ||
9accd112 MM |
11383 | struct btrace_target_info |
11384 | { | |
11385 | /* The ptid of the traced thread. */ | |
11386 | ptid_t ptid; | |
11387 | }; | |
11388 | ||
11389 | /* Check whether the target supports branch tracing. */ | |
11390 | ||
11391 | static int | |
11392 | remote_supports_btrace (void) | |
11393 | { | |
11394 | if (remote_protocol_packets[PACKET_Qbtrace_off].support != PACKET_ENABLE) | |
11395 | return 0; | |
11396 | if (remote_protocol_packets[PACKET_Qbtrace_bts].support != PACKET_ENABLE) | |
11397 | return 0; | |
11398 | if (remote_protocol_packets[PACKET_qXfer_btrace].support != PACKET_ENABLE) | |
11399 | return 0; | |
11400 | ||
11401 | return 1; | |
11402 | } | |
11403 | ||
11404 | /* Enable branch tracing. */ | |
11405 | ||
11406 | static struct btrace_target_info * | |
11407 | remote_enable_btrace (ptid_t ptid) | |
11408 | { | |
11409 | struct btrace_target_info *tinfo = NULL; | |
11410 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11411 | struct remote_state *rs = get_remote_state (); | |
11412 | char *buf = rs->buf; | |
11413 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11414 | ||
11415 | if (packet->support != PACKET_ENABLE) | |
11416 | error (_("Target does not support branch tracing.")); | |
11417 | ||
11418 | set_general_thread (ptid); | |
11419 | ||
11420 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11421 | putpkt (rs->buf); | |
11422 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11423 | ||
11424 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11425 | { | |
11426 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11427 | error (_("Could not enable branch tracing for %s: %s"), | |
11428 | target_pid_to_str (ptid), rs->buf + 2); | |
11429 | else | |
11430 | error (_("Could not enable branch tracing for %s."), | |
11431 | target_pid_to_str (ptid)); | |
11432 | } | |
11433 | ||
11434 | tinfo = xzalloc (sizeof (*tinfo)); | |
11435 | tinfo->ptid = ptid; | |
11436 | ||
11437 | return tinfo; | |
11438 | } | |
11439 | ||
11440 | /* Disable branch tracing. */ | |
11441 | ||
11442 | static void | |
11443 | remote_disable_btrace (struct btrace_target_info *tinfo) | |
11444 | { | |
11445 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11446 | struct remote_state *rs = get_remote_state (); | |
11447 | char *buf = rs->buf; | |
11448 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11449 | ||
11450 | if (packet->support != PACKET_ENABLE) | |
11451 | error (_("Target does not support branch tracing.")); | |
11452 | ||
11453 | set_general_thread (tinfo->ptid); | |
11454 | ||
11455 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11456 | putpkt (rs->buf); | |
11457 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11458 | ||
11459 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11460 | { | |
11461 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11462 | error (_("Could not disable branch tracing for %s: %s"), | |
11463 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11464 | else | |
11465 | error (_("Could not disable branch tracing for %s."), | |
11466 | target_pid_to_str (tinfo->ptid)); | |
11467 | } | |
11468 | ||
11469 | xfree (tinfo); | |
11470 | } | |
11471 | ||
11472 | /* Teardown branch tracing. */ | |
11473 | ||
11474 | static void | |
11475 | remote_teardown_btrace (struct btrace_target_info *tinfo) | |
11476 | { | |
11477 | /* We must not talk to the target during teardown. */ | |
11478 | xfree (tinfo); | |
11479 | } | |
11480 | ||
11481 | /* Read the branch trace. */ | |
11482 | ||
11483 | static VEC (btrace_block_s) * | |
11484 | remote_read_btrace (struct btrace_target_info *tinfo, | |
11485 | enum btrace_read_type type) | |
11486 | { | |
11487 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11488 | struct remote_state *rs = get_remote_state (); | |
11489 | VEC (btrace_block_s) *btrace = NULL; | |
11490 | const char *annex; | |
11491 | char *xml; | |
11492 | ||
11493 | if (packet->support != PACKET_ENABLE) | |
11494 | error (_("Target does not support branch tracing.")); | |
11495 | ||
11496 | #if !defined(HAVE_LIBEXPAT) | |
11497 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11498 | #endif | |
11499 | ||
11500 | switch (type) | |
11501 | { | |
11502 | case btrace_read_all: | |
11503 | annex = "all"; | |
11504 | break; | |
11505 | case btrace_read_new: | |
11506 | annex = "new"; | |
11507 | break; | |
11508 | default: | |
11509 | internal_error (__FILE__, __LINE__, | |
11510 | _("Bad branch tracing read type: %u."), | |
11511 | (unsigned int) type); | |
11512 | } | |
11513 | ||
11514 | xml = target_read_stralloc (¤t_target, | |
11515 | TARGET_OBJECT_BTRACE, annex); | |
11516 | if (xml != NULL) | |
11517 | { | |
11518 | struct cleanup *cleanup = make_cleanup (xfree, xml); | |
11519 | ||
11520 | btrace = parse_xml_btrace (xml); | |
11521 | do_cleanups (cleanup); | |
11522 | } | |
11523 | ||
11524 | return btrace; | |
11525 | } | |
11526 | ||
ced63ec0 GB |
11527 | static int |
11528 | remote_augmented_libraries_svr4_read (void) | |
11529 | { | |
11530 | struct remote_state *rs = get_remote_state (); | |
11531 | ||
11532 | return rs->augmented_libraries_svr4_read; | |
11533 | } | |
11534 | ||
c906108c | 11535 | static void |
fba45db2 | 11536 | init_remote_ops (void) |
c906108c | 11537 | { |
c5aa993b | 11538 | remote_ops.to_shortname = "remote"; |
c906108c | 11539 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11540 | remote_ops.to_doc = |
c906108c | 11541 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11542 | Specify the serial device it is connected to\n\ |
11543 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11544 | remote_ops.to_open = remote_open; |
11545 | remote_ops.to_close = remote_close; | |
c906108c | 11546 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11547 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11548 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11549 | remote_ops.to_wait = remote_wait; |
11550 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11551 | remote_ops.to_store_registers = remote_store_registers; | |
11552 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11553 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11554 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11555 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11556 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11557 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11558 | remote_ops.to_watchpoint_addr_within_range = |
11559 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11560 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11561 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11562 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11563 | remote_ops.to_region_ok_for_hw_watchpoint |
11564 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11565 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11566 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
11567 | remote_ops.to_kill = remote_kill; |
11568 | remote_ops.to_load = generic_load; | |
c906108c | 11569 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11570 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11571 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11572 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11573 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11574 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11575 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11576 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11577 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11578 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11579 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11580 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11581 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11582 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11583 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11584 | remote_ops.to_has_memory = default_child_has_memory; | |
11585 | remote_ops.to_has_stack = default_child_has_stack; | |
11586 | remote_ops.to_has_registers = default_child_has_registers; | |
11587 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11588 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11589 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11590 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11591 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11592 | remote_ops.to_flash_erase = remote_flash_erase; |
11593 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11594 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11595 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11596 | remote_ops.to_can_async_p = remote_can_async_p; |
11597 | remote_ops.to_is_async_p = remote_is_async_p; | |
11598 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11599 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11600 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11601 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11602 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11603 | remote_ops.to_supports_disable_randomization |
11604 | = remote_supports_disable_randomization; | |
7313baad UW |
11605 | remote_ops.to_fileio_open = remote_hostio_open; |
11606 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11607 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11608 | remote_ops.to_fileio_close = remote_hostio_close; | |
11609 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11610 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11611 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11612 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11613 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11614 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11615 | remote_ops.to_trace_init = remote_trace_init; |
11616 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11617 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11618 | remote_ops.to_download_trace_state_variable |
11619 | = remote_download_trace_state_variable; | |
d248b706 KY |
11620 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11621 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11622 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11623 | remote_ops.to_trace_start = remote_trace_start; | |
11624 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11625 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11626 | remote_ops.to_trace_stop = remote_trace_stop; |
11627 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11628 | remote_ops.to_get_trace_state_variable_value |
11629 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11630 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11631 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11632 | remote_ops.to_upload_trace_state_variables |
11633 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11634 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11635 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11636 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11637 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11638 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11639 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11640 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11641 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11642 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11643 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11644 | remote_ops.to_static_tracepoint_marker_at |
11645 | = remote_static_tracepoint_marker_at; | |
11646 | remote_ops.to_static_tracepoint_markers_by_strid | |
11647 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11648 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11649 | remote_ops.to_use_agent = remote_use_agent; |
11650 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11651 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11652 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11653 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11654 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11655 | remote_ops.to_read_btrace = remote_read_btrace; | |
ced63ec0 GB |
11656 | remote_ops.to_augmented_libraries_svr4_read = |
11657 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11658 | } |
11659 | ||
11660 | /* Set up the extended remote vector by making a copy of the standard | |
11661 | remote vector and adding to it. */ | |
11662 | ||
11663 | static void | |
fba45db2 | 11664 | init_extended_remote_ops (void) |
c906108c SS |
11665 | { |
11666 | extended_remote_ops = remote_ops; | |
11667 | ||
0f71a2f6 | 11668 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11669 | extended_remote_ops.to_longname = |
c906108c | 11670 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11671 | extended_remote_ops.to_doc = |
c906108c | 11672 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11673 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11674 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11675 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11676 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11677 | extended_remote_ops.to_detach = extended_remote_detach; |
11678 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11679 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11680 | extended_remote_ops.to_supports_disable_randomization |
11681 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11682 | } |
11683 | ||
6426a772 JM |
11684 | static int |
11685 | remote_can_async_p (void) | |
11686 | { | |
5d93a237 TT |
11687 | struct remote_state *rs = get_remote_state (); |
11688 | ||
c6ebd6cf | 11689 | if (!target_async_permitted) |
75c99385 PA |
11690 | /* We only enable async when the user specifically asks for it. */ |
11691 | return 0; | |
11692 | ||
23860348 | 11693 | /* We're async whenever the serial device is. */ |
5d93a237 | 11694 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11695 | } |
11696 | ||
11697 | static int | |
11698 | remote_is_async_p (void) | |
11699 | { | |
5d93a237 TT |
11700 | struct remote_state *rs = get_remote_state (); |
11701 | ||
c6ebd6cf | 11702 | if (!target_async_permitted) |
75c99385 PA |
11703 | /* We only enable async when the user specifically asks for it. */ |
11704 | return 0; | |
11705 | ||
23860348 | 11706 | /* We're async whenever the serial device is. */ |
5d93a237 | 11707 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11708 | } |
11709 | ||
2acceee2 JM |
11710 | /* Pass the SERIAL event on and up to the client. One day this code |
11711 | will be able to delay notifying the client of an event until the | |
23860348 | 11712 | point where an entire packet has been received. */ |
2acceee2 | 11713 | |
2acceee2 JM |
11714 | static serial_event_ftype remote_async_serial_handler; |
11715 | ||
6426a772 | 11716 | static void |
819cc324 | 11717 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11718 | { |
88b496c3 TT |
11719 | struct remote_state *rs = context; |
11720 | ||
2acceee2 JM |
11721 | /* Don't propogate error information up to the client. Instead let |
11722 | the client find out about the error by querying the target. */ | |
88b496c3 | 11723 | rs->async_client_callback (INF_REG_EVENT, rs->async_client_context); |
2acceee2 JM |
11724 | } |
11725 | ||
74531fed PA |
11726 | static void |
11727 | remote_async_inferior_event_handler (gdb_client_data data) | |
11728 | { | |
11729 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11730 | } | |
11731 | ||
2acceee2 | 11732 | static void |
2bc416ba | 11733 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11734 | void *context), void *context) |
2acceee2 | 11735 | { |
5d93a237 TT |
11736 | struct remote_state *rs = get_remote_state (); |
11737 | ||
2acceee2 JM |
11738 | if (callback != NULL) |
11739 | { | |
88b496c3 TT |
11740 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
11741 | rs->async_client_callback = callback; | |
11742 | rs->async_client_context = context; | |
2acceee2 JM |
11743 | } |
11744 | else | |
5d93a237 | 11745 | serial_async (rs->remote_desc, NULL, NULL); |
6426a772 JM |
11746 | } |
11747 | ||
5a2468f5 | 11748 | static void |
c2d11a7d | 11749 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11750 | { |
427c3a89 | 11751 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11752 | } |
11753 | ||
d471ea57 AC |
11754 | static void |
11755 | show_remote_cmd (char *args, int from_tty) | |
11756 | { | |
37a105a1 | 11757 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11758 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11759 | struct cleanup *showlist_chain; |
11760 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11761 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11762 | |
11763 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11764 | for (; list != NULL; list = list->next) | |
11765 | if (strcmp (list->name, "Z-packet") == 0) | |
11766 | continue; | |
427c3a89 DJ |
11767 | else if (list->type == not_set_cmd) |
11768 | /* Alias commands are exactly like the original, except they | |
11769 | don't have the normal type. */ | |
11770 | continue; | |
11771 | else | |
37a105a1 DJ |
11772 | { |
11773 | struct cleanup *option_chain | |
11774 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11775 | |
37a105a1 DJ |
11776 | ui_out_field_string (uiout, "name", list->name); |
11777 | ui_out_text (uiout, ": "); | |
427c3a89 | 11778 | if (list->type == show_cmd) |
5b9afe8a | 11779 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11780 | else |
11781 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11782 | /* Close the tuple. */ |
11783 | do_cleanups (option_chain); | |
11784 | } | |
427c3a89 DJ |
11785 | |
11786 | /* Close the tuple. */ | |
11787 | do_cleanups (showlist_chain); | |
d471ea57 | 11788 | } |
5a2468f5 | 11789 | |
0f71a2f6 | 11790 | |
23860348 | 11791 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11792 | static void |
11793 | remote_new_objfile (struct objfile *objfile) | |
11794 | { | |
5d93a237 TT |
11795 | struct remote_state *rs = get_remote_state (); |
11796 | ||
11797 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 11798 | remote_check_symbols (); |
dc8acb97 MS |
11799 | } |
11800 | ||
00bf0b85 SS |
11801 | /* Pull all the tracepoints defined on the target and create local |
11802 | data structures representing them. We don't want to create real | |
11803 | tracepoints yet, we don't want to mess up the user's existing | |
11804 | collection. */ | |
11805 | ||
11806 | static int | |
11807 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11808 | { |
00bf0b85 SS |
11809 | struct remote_state *rs = get_remote_state (); |
11810 | char *p; | |
d5551862 | 11811 | |
00bf0b85 SS |
11812 | /* Ask for a first packet of tracepoint definition. */ |
11813 | putpkt ("qTfP"); | |
11814 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11815 | p = rs->buf; | |
11816 | while (*p && *p != 'l') | |
d5551862 | 11817 | { |
00bf0b85 SS |
11818 | parse_tracepoint_definition (p, utpp); |
11819 | /* Ask for another packet of tracepoint definition. */ | |
11820 | putpkt ("qTsP"); | |
11821 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11822 | p = rs->buf; | |
d5551862 | 11823 | } |
00bf0b85 | 11824 | return 0; |
d5551862 SS |
11825 | } |
11826 | ||
00bf0b85 SS |
11827 | static int |
11828 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11829 | { |
00bf0b85 | 11830 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11831 | char *p; |
d5551862 | 11832 | |
00bf0b85 SS |
11833 | /* Ask for a first packet of variable definition. */ |
11834 | putpkt ("qTfV"); | |
d5551862 SS |
11835 | getpkt (&rs->buf, &rs->buf_size, 0); |
11836 | p = rs->buf; | |
00bf0b85 | 11837 | while (*p && *p != 'l') |
d5551862 | 11838 | { |
00bf0b85 SS |
11839 | parse_tsv_definition (p, utsvp); |
11840 | /* Ask for another packet of variable definition. */ | |
11841 | putpkt ("qTsV"); | |
d5551862 SS |
11842 | getpkt (&rs->buf, &rs->buf_size, 0); |
11843 | p = rs->buf; | |
11844 | } | |
00bf0b85 | 11845 | return 0; |
d5551862 SS |
11846 | } |
11847 | ||
c1e36e3e PA |
11848 | /* The "set/show range-stepping" show hook. */ |
11849 | ||
11850 | static void | |
11851 | show_range_stepping (struct ui_file *file, int from_tty, | |
11852 | struct cmd_list_element *c, | |
11853 | const char *value) | |
11854 | { | |
11855 | fprintf_filtered (file, | |
11856 | _("Debugger's willingness to use range stepping " | |
11857 | "is %s.\n"), value); | |
11858 | } | |
11859 | ||
11860 | /* The "set/show range-stepping" set hook. */ | |
11861 | ||
11862 | static void | |
11863 | set_range_stepping (char *ignore_args, int from_tty, | |
11864 | struct cmd_list_element *c) | |
11865 | { | |
5d93a237 TT |
11866 | struct remote_state *rs = get_remote_state (); |
11867 | ||
c1e36e3e PA |
11868 | /* Whene enabling, check whether range stepping is actually |
11869 | supported by the target, and warn if not. */ | |
11870 | if (use_range_stepping) | |
11871 | { | |
5d93a237 | 11872 | if (rs->remote_desc != NULL) |
c1e36e3e | 11873 | { |
c1e36e3e PA |
11874 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
11875 | remote_vcont_probe (rs); | |
11876 | ||
11877 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_ENABLE | |
11878 | && rs->supports_vCont.r) | |
11879 | return; | |
11880 | } | |
11881 | ||
11882 | warning (_("Range stepping is not supported by the current target")); | |
11883 | } | |
11884 | } | |
11885 | ||
c906108c | 11886 | void |
fba45db2 | 11887 | _initialize_remote (void) |
c906108c | 11888 | { |
ea9c271d | 11889 | struct remote_state *rs; |
9a7071a8 | 11890 | struct cmd_list_element *cmd; |
6f937416 | 11891 | const char *cmd_name; |
ea9c271d | 11892 | |
0f71a2f6 | 11893 | /* architecture specific data */ |
2bc416ba | 11894 | remote_gdbarch_data_handle = |
23860348 | 11895 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11896 | remote_g_packet_data_handle = |
11897 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11898 | |
ea9c271d DJ |
11899 | /* Initialize the per-target state. At the moment there is only one |
11900 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
11901 | time. */ |
11902 | remote_state = new_remote_state (); | |
ea9c271d | 11903 | |
c906108c SS |
11904 | init_remote_ops (); |
11905 | add_target (&remote_ops); | |
11906 | ||
11907 | init_extended_remote_ops (); | |
11908 | add_target (&extended_remote_ops); | |
cce74817 | 11909 | |
dc8acb97 | 11910 | /* Hook into new objfile notification. */ |
06d3b283 | 11911 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11912 | /* We're no longer interested in notification events of an inferior |
11913 | when it exits. */ | |
11914 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11915 | |
b803fb0f | 11916 | /* Set up signal handlers. */ |
934b9bac | 11917 | async_sigint_remote_token = |
b803fb0f | 11918 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 11919 | async_sigint_remote_twice_token = |
6d549500 | 11920 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11921 | |
c906108c SS |
11922 | #if 0 |
11923 | init_remote_threadtests (); | |
11924 | #endif | |
11925 | ||
722247f1 | 11926 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11927 | /* set/show remote ... */ |
d471ea57 | 11928 | |
1bedd215 | 11929 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11930 | Remote protocol specific variables\n\ |
11931 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11932 | the packets being used"), |
cff3e48b | 11933 | &remote_set_cmdlist, "set remote ", |
23860348 | 11934 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11935 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11936 | Remote protocol specific variables\n\ |
11937 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11938 | the packets being used"), |
cff3e48b | 11939 | &remote_show_cmdlist, "show remote ", |
23860348 | 11940 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11941 | |
1a966eab AC |
11942 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11943 | Compare section data on target to the exec file.\n\ | |
11944 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11945 | &cmdlist); |
11946 | ||
1a966eab AC |
11947 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11948 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11949 | maintenance packet TEXT\n\ |
11950 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11951 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11952 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11953 | terminating `#' character and checksum."), |
c906108c SS |
11954 | &maintenancelist); |
11955 | ||
7915a72c AC |
11956 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11957 | Set whether to send break if interrupted."), _("\ | |
11958 | Show whether to send break if interrupted."), _("\ | |
11959 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11960 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11961 | &setlist, &showlist); |
9a7071a8 JB |
11962 | cmd_name = "remotebreak"; |
11963 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11964 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11965 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11966 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11967 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11968 | ||
11969 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11970 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11971 | _("\ | |
9a7071a8 JB |
11972 | Set interrupt sequence to remote target."), _("\ |
11973 | Show interrupt sequence to remote target."), _("\ | |
11974 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11975 | NULL, show_interrupt_sequence, | |
11976 | &remote_set_cmdlist, | |
11977 | &remote_show_cmdlist); | |
11978 | ||
11979 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11980 | &interrupt_on_connect, _("\ | |
11981 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11982 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11983 | If set, interrupt sequence is sent to remote target."), | |
11984 | NULL, NULL, | |
11985 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11986 | |
23860348 | 11987 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11988 | |
1a966eab AC |
11989 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11990 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11991 | &setlist); |
1a966eab AC |
11992 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11993 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11994 | &showlist); |
11995 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11996 | set_memory_write_packet_size, _("\ |
11997 | Set the maximum number of bytes per memory-write packet.\n\ | |
11998 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11999 | default packet size. The actual limit is further reduced\n\ | |
12000 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12001 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12002 | &remote_set_cmdlist); |
12003 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12004 | set_memory_read_packet_size, _("\ |
12005 | Set the maximum number of bytes per memory-read packet.\n\ | |
12006 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12007 | default packet size. The actual limit is further reduced\n\ | |
12008 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12009 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12010 | &remote_set_cmdlist); |
12011 | add_cmd ("memory-write-packet-size", no_class, | |
12012 | show_memory_write_packet_size, | |
1a966eab | 12013 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12014 | &remote_show_cmdlist); |
12015 | add_cmd ("memory-read-packet-size", no_class, | |
12016 | show_memory_read_packet_size, | |
1a966eab | 12017 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12018 | &remote_show_cmdlist); |
c906108c | 12019 | |
b3f42336 | 12020 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12021 | &remote_hw_watchpoint_limit, _("\ |
12022 | Set the maximum number of target hardware watchpoints."), _("\ | |
12023 | Show the maximum number of target hardware watchpoints."), _("\ | |
12024 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12025 | NULL, NULL, /* FIXME: i18n: The maximum |
12026 | number of target hardware | |
12027 | watchpoints is %s. */ | |
b3f42336 | 12028 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12029 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12030 | &remote_hw_watchpoint_length_limit, _("\ | |
12031 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12032 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12033 | Specify a negative limit for unlimited."), | |
12034 | NULL, NULL, /* FIXME: i18n: The maximum | |
12035 | length (in bytes) of a target | |
12036 | hardware watchpoint is %s. */ | |
12037 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12038 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12039 | &remote_hw_breakpoint_limit, _("\ |
12040 | Set the maximum number of target hardware breakpoints."), _("\ | |
12041 | Show the maximum number of target hardware breakpoints."), _("\ | |
12042 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12043 | NULL, NULL, /* FIXME: i18n: The maximum |
12044 | number of target hardware | |
12045 | breakpoints is %s. */ | |
b3f42336 | 12046 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12047 | |
1b493192 PA |
12048 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12049 | &remote_address_size, _("\ | |
4d28ad1e AC |
12050 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12051 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12052 | NULL, |
12053 | NULL, /* FIXME: i18n: */ | |
12054 | &setlist, &showlist); | |
c906108c | 12055 | |
444abaca | 12056 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12057 | "X", "binary-download", 1); |
0f71a2f6 | 12058 | |
444abaca | 12059 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12060 | "vCont", "verbose-resume", 0); |
506fb367 | 12061 | |
89be2091 DJ |
12062 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12063 | "QPassSignals", "pass-signals", 0); | |
12064 | ||
9b224c5e PA |
12065 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12066 | "QProgramSignals", "program-signals", 0); | |
12067 | ||
444abaca | 12068 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12069 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12070 | |
444abaca | 12071 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12072 | "P", "set-register", 1); |
d471ea57 | 12073 | |
444abaca | 12074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12075 | "p", "fetch-register", 1); |
b96ec7ac | 12076 | |
444abaca | 12077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12078 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12079 | |
444abaca | 12080 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12081 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12082 | |
444abaca | 12083 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12084 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12085 | |
444abaca | 12086 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12087 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12088 | |
444abaca | 12089 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12090 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12091 | |
0876f84a DJ |
12092 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12093 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12094 | |
23181151 DJ |
12095 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12096 | "qXfer:features:read", "target-features", 0); | |
12097 | ||
cfa9d6d9 DJ |
12098 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12099 | "qXfer:libraries:read", "library-info", 0); | |
12100 | ||
2268b414 JK |
12101 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12102 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12103 | ||
fd79ecee DJ |
12104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12105 | "qXfer:memory-map:read", "memory-map", 0); | |
12106 | ||
0e7f50da UW |
12107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12108 | "qXfer:spu:read", "read-spu-object", 0); | |
12109 | ||
12110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12111 | "qXfer:spu:write", "write-spu-object", 0); | |
12112 | ||
07e059b5 VP |
12113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12114 | "qXfer:osdata:read", "osdata", 0); | |
12115 | ||
dc146f7c VP |
12116 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12117 | "qXfer:threads:read", "threads", 0); | |
12118 | ||
4aa995e1 PA |
12119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12120 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12121 | ||
12122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12123 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12124 | ||
b3b9301e PA |
12125 | add_packet_config_cmd |
12126 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12127 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12128 | |
169081d0 TG |
12129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12130 | "qXfer:uib:read", "unwind-info-block", 0); | |
12131 | ||
444abaca | 12132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12133 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12134 | 0); |
12135 | ||
711e434b PM |
12136 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12137 | "qGetTIBAddr", "get-thread-information-block-address", | |
12138 | 0); | |
12139 | ||
40ab02ce MS |
12140 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12141 | "bc", "reverse-continue", 0); | |
12142 | ||
12143 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12144 | "bs", "reverse-step", 0); | |
12145 | ||
be2a5f71 DJ |
12146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12147 | "qSupported", "supported-packets", 0); | |
12148 | ||
08388c79 DE |
12149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12150 | "qSearch:memory", "search-memory", 0); | |
12151 | ||
bd3eecc3 PA |
12152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12153 | "qTStatus", "trace-status", 0); | |
12154 | ||
a6b151f1 DJ |
12155 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12156 | "vFile:open", "hostio-open", 0); | |
12157 | ||
12158 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12159 | "vFile:pread", "hostio-pread", 0); | |
12160 | ||
12161 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12162 | "vFile:pwrite", "hostio-pwrite", 0); | |
12163 | ||
12164 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12165 | "vFile:close", "hostio-close", 0); | |
12166 | ||
12167 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12168 | "vFile:unlink", "hostio-unlink", 0); | |
12169 | ||
b9e7b9c3 UW |
12170 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12171 | "vFile:readlink", "hostio-readlink", 0); | |
12172 | ||
2d717e4f DJ |
12173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12174 | "vAttach", "attach", 0); | |
12175 | ||
12176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12177 | "vRun", "run", 0); | |
12178 | ||
a6f3e723 SL |
12179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12180 | "QStartNoAckMode", "noack", 0); | |
12181 | ||
82f73884 PA |
12182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12183 | "vKill", "kill", 0); | |
12184 | ||
0b16c5cf PA |
12185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12186 | "qAttached", "query-attached", 0); | |
12187 | ||
782b2b07 | 12188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12189 | "ConditionalTracepoints", |
12190 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12191 | |
12192 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12193 | "ConditionalBreakpoints", | |
12194 | "conditional-breakpoints", 0); | |
12195 | ||
d3ce09f5 SS |
12196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12197 | "BreakpointCommands", | |
12198 | "breakpoint-commands", 0); | |
12199 | ||
7a697b8d SS |
12200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12201 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12202 | |
409873ef SS |
12203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12204 | "TracepointSource", "TracepointSource", 0); | |
12205 | ||
d914c394 SS |
12206 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12207 | "QAllow", "allow", 0); | |
12208 | ||
0fb4aa4b PA |
12209 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12210 | "StaticTracepoints", "static-tracepoints", 0); | |
12211 | ||
1e4d1764 YQ |
12212 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12213 | "InstallInTrace", "install-in-trace", 0); | |
12214 | ||
0fb4aa4b PA |
12215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12216 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12217 | ||
78d85199 YQ |
12218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12219 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12220 | ||
03583c20 UW |
12221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12222 | "QDisableRandomization", "disable-randomization", 0); | |
12223 | ||
d1feda86 YQ |
12224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12225 | "QAgent", "agent", 0); | |
12226 | ||
f6f899bf HAQ |
12227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12228 | "QTBuffer:size", "trace-buffer-size", 0); | |
12229 | ||
9accd112 MM |
12230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12231 | "Qbtrace:off", "disable-btrace", 0); | |
12232 | ||
12233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12234 | "Qbtrace:bts", "enable-btrace", 0); | |
12235 | ||
12236 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12237 | "qXfer:btrace", "read-btrace", 0); | |
12238 | ||
37a105a1 DJ |
12239 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12240 | Z sub-packet has its own set and show commands, but users may | |
12241 | have sets to this variable in their .gdbinit files (or in their | |
12242 | documentation). */ | |
e9e68a56 | 12243 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12244 | &remote_Z_packet_detect, _("\ |
12245 | Set use of remote protocol `Z' packets"), _("\ | |
12246 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12247 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12248 | packets."), |
e9e68a56 | 12249 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12250 | show_remote_protocol_Z_packet_cmd, |
12251 | /* FIXME: i18n: Use of remote protocol | |
12252 | `Z' packets is %s. */ | |
e9e68a56 | 12253 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12254 | |
a6b151f1 DJ |
12255 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12256 | Manipulate files on the remote system\n\ | |
12257 | Transfer files to and from the remote target system."), | |
12258 | &remote_cmdlist, "remote ", | |
12259 | 0 /* allow-unknown */, &cmdlist); | |
12260 | ||
12261 | add_cmd ("put", class_files, remote_put_command, | |
12262 | _("Copy a local file to the remote system."), | |
12263 | &remote_cmdlist); | |
12264 | ||
12265 | add_cmd ("get", class_files, remote_get_command, | |
12266 | _("Copy a remote file to the local system."), | |
12267 | &remote_cmdlist); | |
12268 | ||
12269 | add_cmd ("delete", class_files, remote_delete_command, | |
12270 | _("Delete a remote file."), | |
12271 | &remote_cmdlist); | |
12272 | ||
2d717e4f DJ |
12273 | remote_exec_file = xstrdup (""); |
12274 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12275 | &remote_exec_file, _("\ | |
12276 | Set the remote pathname for \"run\""), _("\ | |
12277 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12278 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12279 | ||
c1e36e3e PA |
12280 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12281 | &use_range_stepping, _("\ | |
12282 | Enable or disable range stepping."), _("\ | |
12283 | Show whether target-assisted range stepping is enabled."), _("\ | |
12284 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12285 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12286 | of issuing multiple single-steps. This speeds up source level\n\ | |
12287 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12288 | stepping is supported by the target. The default is on."), | |
12289 | set_range_stepping, | |
12290 | show_range_stepping, | |
12291 | &setlist, | |
12292 | &showlist); | |
12293 | ||
449092f6 CV |
12294 | /* Eventually initialize fileio. See fileio.c */ |
12295 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
12296 | |
12297 | /* Take advantage of the fact that the LWP field is not used, to tag | |
12298 | special ptids with it set to != 0. */ | |
82f73884 PA |
12299 | magic_null_ptid = ptid_build (42000, 1, -1); |
12300 | not_sent_ptid = ptid_build (42000, 1, -2); | |
12301 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
12302 | |
12303 | target_buf_size = 2048; | |
12304 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12305 | } |
10760264 | 12306 |