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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
934b9bac | 91 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 92 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 93 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 94 | int forever, int *is_notif); |
6426a772 | 95 | |
934b9bac JK |
96 | static void async_handle_remote_sigint (int); |
97 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
f32dbf8c MM |
101 | static void remote_prepare_to_store (struct target_ops *self, |
102 | struct regcache *regcache); | |
c906108c | 103 | |
014f9477 TT |
104 | static void remote_open_1 (const char *, int, struct target_ops *, |
105 | int extended_p); | |
c906108c | 106 | |
de90e03d | 107 | static void remote_close (struct target_ops *self); |
c906108c | 108 | |
cbb8991c DB |
109 | struct remote_state; |
110 | ||
111 | static int remote_vkill (int pid, struct remote_state *rs); | |
112 | ||
136d6dae | 113 | static void remote_mourn (struct target_ops *ops); |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_restart (void); |
c906108c | 116 | |
136d6dae | 117 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
c33e31fd PA |
123 | static void remote_serial_write (const char *str, int len); |
124 | ||
7d85a9c0 | 125 | static void remote_kill (struct target_ops *ops); |
c906108c | 126 | |
6a109b6b | 127 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 128 | |
6a109b6b | 129 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 130 | |
6a3753b3 | 131 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 132 | |
934b9bac | 133 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 134 | |
a14ed312 | 135 | static void interrupt_query (void); |
c906108c | 136 | |
79d7f229 PA |
137 | static void set_general_thread (struct ptid ptid); |
138 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 139 | |
a14ed312 | 140 | static void get_offsets (void); |
c906108c | 141 | |
6d820c5c DJ |
142 | static void skip_frame (void); |
143 | ||
144 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 145 | |
a14ed312 | 146 | static int hexnumlen (ULONGEST num); |
c906108c | 147 | |
a14ed312 | 148 | static void init_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void init_extended_remote_ops (void); |
c906108c | 151 | |
1eab8a48 | 152 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 153 | |
a14ed312 | 154 | static int stubhex (int ch); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumstr (char *, ULONGEST); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 159 | |
a14ed312 | 160 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 161 | |
baa336ce | 162 | static void print_packet (const char *); |
c906108c | 163 | |
a14ed312 | 164 | static void compare_sections_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void packet_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 169 | |
39f77062 | 170 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 171 | |
baa336ce | 172 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 173 | |
a14ed312 | 174 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 175 | |
5a2468f5 | 176 | struct packet_config; |
5a2468f5 | 177 | |
a14ed312 | 178 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 179 | |
bb572ddd DJ |
180 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
181 | int from_tty, | |
182 | struct cmd_list_element *c, | |
183 | const char *value); | |
184 | ||
82f73884 PA |
185 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
186 | static ptid_t read_ptid (char *buf, char **obuf); | |
187 | ||
c378d69d | 188 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 189 | |
8bd200f1 TT |
190 | static int remote_get_trace_status (struct target_ops *self, |
191 | struct trace_status *ts); | |
d5551862 | 192 | |
ab6617cc TT |
193 | static int remote_upload_tracepoints (struct target_ops *self, |
194 | struct uploaded_tp **utpp); | |
00bf0b85 | 195 | |
181e3713 TT |
196 | static int remote_upload_trace_state_variables (struct target_ops *self, |
197 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 198 | |
c8d104ad PA |
199 | static void remote_query_supported (void); |
200 | ||
36d25514 | 201 | static void remote_check_symbols (void); |
c8d104ad | 202 | |
a14ed312 | 203 | void _initialize_remote (void); |
c906108c | 204 | |
74531fed | 205 | struct stop_reply; |
74531fed | 206 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 207 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 208 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 209 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
210 | static int peek_stop_reply (ptid_t ptid); |
211 | ||
cbb8991c DB |
212 | struct threads_listing_context; |
213 | static void remove_new_fork_children (struct threads_listing_context *); | |
214 | ||
74531fed | 215 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 216 | |
e3594fd1 | 217 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 218 | |
d962ef82 DJ |
219 | static int remote_read_description_p (struct target_ops *target); |
220 | ||
176a6961 | 221 | static void remote_console_output (char *msg); |
dde08ee1 | 222 | |
efcc2da7 | 223 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 224 | |
78eff0ec | 225 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 226 | |
f4abbc16 MM |
227 | static void remote_btrace_reset (void); |
228 | ||
221e1a37 PA |
229 | static int stop_reply_queue_length (void); |
230 | ||
80152258 PA |
231 | static void readahead_cache_invalidate (void); |
232 | ||
a6b151f1 DJ |
233 | /* For "remote". */ |
234 | ||
235 | static struct cmd_list_element *remote_cmdlist; | |
236 | ||
bb572ddd DJ |
237 | /* For "set remote" and "show remote". */ |
238 | ||
239 | static struct cmd_list_element *remote_set_cmdlist; | |
240 | static struct cmd_list_element *remote_show_cmdlist; | |
241 | ||
d458bd84 PA |
242 | /* Stub vCont actions support. |
243 | ||
244 | Each field is a boolean flag indicating whether the stub reports | |
245 | support for the corresponding action. */ | |
246 | ||
247 | struct vCont_action_support | |
248 | { | |
249 | /* vCont;t */ | |
250 | int t; | |
c1e36e3e PA |
251 | |
252 | /* vCont;r */ | |
253 | int r; | |
d458bd84 PA |
254 | }; |
255 | ||
c1e36e3e PA |
256 | /* Controls whether GDB is willing to use range stepping. */ |
257 | ||
258 | static int use_range_stepping = 1; | |
259 | ||
0d031856 TT |
260 | #define OPAQUETHREADBYTES 8 |
261 | ||
262 | /* a 64 bit opaque identifier */ | |
263 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
264 | ||
265 | /* About this many threadisds fit in a packet. */ | |
266 | ||
267 | #define MAXTHREADLISTRESULTS 32 | |
268 | ||
80152258 PA |
269 | /* Data for the vFile:pread readahead cache. */ |
270 | ||
271 | struct readahead_cache | |
272 | { | |
273 | /* The file descriptor for the file that is being cached. -1 if the | |
274 | cache is invalid. */ | |
275 | int fd; | |
276 | ||
277 | /* The offset into the file that the cache buffer corresponds | |
278 | to. */ | |
279 | ULONGEST offset; | |
280 | ||
281 | /* The buffer holding the cache contents. */ | |
282 | gdb_byte *buf; | |
283 | /* The buffer's size. We try to read as much as fits into a packet | |
284 | at a time. */ | |
285 | size_t bufsize; | |
286 | ||
287 | /* Cache hit and miss counters. */ | |
288 | ULONGEST hit_count; | |
289 | ULONGEST miss_count; | |
290 | }; | |
291 | ||
ea9c271d DJ |
292 | /* Description of the remote protocol state for the currently |
293 | connected target. This is per-target state, and independent of the | |
294 | selected architecture. */ | |
295 | ||
296 | struct remote_state | |
297 | { | |
298 | /* A buffer to use for incoming packets, and its current size. The | |
299 | buffer is grown dynamically for larger incoming packets. | |
300 | Outgoing packets may also be constructed in this buffer. | |
301 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
302 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
303 | packets. */ | |
304 | char *buf; | |
305 | long buf_size; | |
be2a5f71 | 306 | |
1e51243a PA |
307 | /* True if we're going through initial connection setup (finding out |
308 | about the remote side's threads, relocating symbols, etc.). */ | |
309 | int starting_up; | |
310 | ||
be2a5f71 DJ |
311 | /* If we negotiated packet size explicitly (and thus can bypass |
312 | heuristics for the largest packet size that will not overflow | |
313 | a buffer in the stub), this will be set to that packet size. | |
314 | Otherwise zero, meaning to use the guessed size. */ | |
315 | long explicit_packet_size; | |
2d717e4f DJ |
316 | |
317 | /* remote_wait is normally called when the target is running and | |
318 | waits for a stop reply packet. But sometimes we need to call it | |
319 | when the target is already stopped. We can send a "?" packet | |
320 | and have remote_wait read the response. Or, if we already have | |
321 | the response, we can stash it in BUF and tell remote_wait to | |
322 | skip calling getpkt. This flag is set when BUF contains a | |
323 | stop reply packet and the target is not waiting. */ | |
324 | int cached_wait_status; | |
a6f3e723 SL |
325 | |
326 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
327 | expect acks from each other. The connection is assumed to be | |
328 | reliable. */ | |
329 | int noack_mode; | |
82f73884 PA |
330 | |
331 | /* True if we're connected in extended remote mode. */ | |
332 | int extended; | |
333 | ||
e24a49d8 PA |
334 | /* True if we resumed the target and we're waiting for the target to |
335 | stop. In the mean time, we can't start another command/query. | |
336 | The remote server wouldn't be ready to process it, so we'd | |
337 | timeout waiting for a reply that would never come and eventually | |
338 | we'd close the connection. This can happen in asynchronous mode | |
339 | because we allow GDB commands while the target is running. */ | |
340 | int waiting_for_stop_reply; | |
74531fed | 341 | |
d458bd84 PA |
342 | /* The status of the stub support for the various vCont actions. */ |
343 | struct vCont_action_support supports_vCont; | |
782b2b07 | 344 | |
3a29589a DJ |
345 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
346 | responded to that. */ | |
347 | int ctrlc_pending_p; | |
5d93a237 TT |
348 | |
349 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
350 | remote_open knows that we don't have a file open when the program | |
351 | starts. */ | |
352 | struct serial *remote_desc; | |
47f8a51d TT |
353 | |
354 | /* These are the threads which we last sent to the remote system. The | |
355 | TID member will be -1 for all or -2 for not sent yet. */ | |
356 | ptid_t general_thread; | |
357 | ptid_t continue_thread; | |
262e1174 TT |
358 | |
359 | /* This is the traceframe which we last selected on the remote system. | |
360 | It will be -1 if no traceframe is selected. */ | |
361 | int remote_traceframe_number; | |
747dc59d TT |
362 | |
363 | char *last_pass_packet; | |
5e4a05c4 TT |
364 | |
365 | /* The last QProgramSignals packet sent to the target. We bypass | |
366 | sending a new program signals list down to the target if the new | |
367 | packet is exactly the same as the last we sent. IOW, we only let | |
368 | the target know about program signals list changes. */ | |
369 | char *last_program_signals_packet; | |
b73be471 TT |
370 | |
371 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
372 | |
373 | int last_sent_step; | |
8e88304f TT |
374 | |
375 | char *finished_object; | |
376 | char *finished_annex; | |
377 | ULONGEST finished_offset; | |
b80fafe3 TT |
378 | |
379 | /* Should we try the 'ThreadInfo' query packet? | |
380 | ||
381 | This variable (NOT available to the user: auto-detect only!) | |
382 | determines whether GDB will use the new, simpler "ThreadInfo" | |
383 | query or the older, more complex syntax for thread queries. | |
384 | This is an auto-detect variable (set to true at each connect, | |
385 | and set to false when the target fails to recognize it). */ | |
386 | int use_threadinfo_query; | |
387 | int use_threadextra_query; | |
88b496c3 | 388 | |
ee154bee TT |
389 | /* This is set to the data address of the access causing the target |
390 | to stop for a watchpoint. */ | |
391 | CORE_ADDR remote_watch_data_address; | |
392 | ||
f7e6eed5 PA |
393 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
394 | enum target_stop_reason stop_reason; | |
0d031856 TT |
395 | |
396 | threadref echo_nextthread; | |
397 | threadref nextthread; | |
398 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
399 | |
400 | /* The state of remote notification. */ | |
401 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
402 | |
403 | /* The branch trace configuration. */ | |
404 | struct btrace_config btrace_config; | |
15a201c8 GB |
405 | |
406 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
407 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
408 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
409 | has yet been sent. */ | |
410 | int fs_pid; | |
80152258 PA |
411 | |
412 | /* A readahead cache for vFile:pread. Often, reading a binary | |
413 | involves a sequence of small reads. E.g., when parsing an ELF | |
414 | file. A readahead cache helps mostly the case of remote | |
415 | debugging on a connection with higher latency, due to the | |
416 | request/reply nature of the RSP. We only cache data for a single | |
417 | file descriptor at a time. */ | |
418 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
419 | }; |
420 | ||
dc146f7c VP |
421 | /* Private data that we'll store in (struct thread_info)->private. */ |
422 | struct private_thread_info | |
423 | { | |
424 | char *extra; | |
425 | int core; | |
426 | }; | |
427 | ||
428 | static void | |
429 | free_private_thread_info (struct private_thread_info *info) | |
430 | { | |
431 | xfree (info->extra); | |
432 | xfree (info); | |
433 | } | |
434 | ||
ea9c271d DJ |
435 | /* This data could be associated with a target, but we do not always |
436 | have access to the current target when we need it, so for now it is | |
437 | static. This will be fine for as long as only one target is in use | |
438 | at a time. */ | |
cf792862 | 439 | static struct remote_state *remote_state; |
ea9c271d DJ |
440 | |
441 | static struct remote_state * | |
0b83947e | 442 | get_remote_state_raw (void) |
ea9c271d | 443 | { |
cf792862 TT |
444 | return remote_state; |
445 | } | |
446 | ||
447 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
448 | return it. */ | |
449 | ||
450 | static struct remote_state * | |
451 | new_remote_state (void) | |
452 | { | |
453 | struct remote_state *result = XCNEW (struct remote_state); | |
454 | ||
455 | /* The default buffer size is unimportant; it will be expanded | |
456 | whenever a larger buffer is needed. */ | |
457 | result->buf_size = 400; | |
458 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 459 | result->remote_traceframe_number = -1; |
b73be471 | 460 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 461 | result->fs_pid = -1; |
cf792862 TT |
462 | |
463 | return result; | |
ea9c271d DJ |
464 | } |
465 | ||
466 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 467 | |
ad10f812 AC |
468 | struct packet_reg |
469 | { | |
470 | long offset; /* Offset into G packet. */ | |
471 | long regnum; /* GDB's internal register number. */ | |
472 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 473 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 474 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 475 | at present. */ |
f5656ead | 476 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 477 | at present. */ |
ad10f812 AC |
478 | }; |
479 | ||
ea9c271d | 480 | struct remote_arch_state |
d01949b6 | 481 | { |
ad10f812 AC |
482 | /* Description of the remote protocol registers. */ |
483 | long sizeof_g_packet; | |
b323314b AC |
484 | |
485 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 486 | (making an array gdbarch_num_regs in size). */ |
b323314b | 487 | struct packet_reg *regs; |
ad10f812 | 488 | |
d01949b6 AC |
489 | /* This is the size (in chars) of the first response to the ``g'' |
490 | packet. It is used as a heuristic when determining the maximum | |
491 | size of memory-read and memory-write packets. A target will | |
492 | typically only reserve a buffer large enough to hold the ``g'' | |
493 | packet. The size does not include packet overhead (headers and | |
23860348 | 494 | trailers). */ |
d01949b6 AC |
495 | long actual_register_packet_size; |
496 | ||
497 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 498 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
499 | long remote_packet_size; |
500 | }; | |
501 | ||
35b1e5cc SS |
502 | /* Utility: generate error from an incoming stub packet. */ |
503 | static void | |
504 | trace_error (char *buf) | |
505 | { | |
506 | if (*buf++ != 'E') | |
507 | return; /* not an error msg */ | |
508 | switch (*buf) | |
509 | { | |
510 | case '1': /* malformed packet error */ | |
511 | if (*++buf == '0') /* general case: */ | |
512 | error (_("remote.c: error in outgoing packet.")); | |
513 | else | |
514 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
515 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
516 | default: |
517 | error (_("Target returns error code '%s'."), buf); | |
518 | } | |
519 | } | |
520 | ||
521 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
522 | static char * | |
523 | remote_get_noisy_reply (char **buf_p, | |
524 | long *sizeof_buf) | |
525 | { | |
526 | do /* Loop on reply from remote stub. */ | |
527 | { | |
528 | char *buf; | |
a744cf53 | 529 | |
0df8b418 | 530 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
531 | getpkt (buf_p, sizeof_buf, 0); |
532 | buf = *buf_p; | |
ad91cd99 | 533 | if (buf[0] == 'E') |
35b1e5cc | 534 | trace_error (buf); |
61012eef | 535 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
536 | { |
537 | ULONGEST ul; | |
538 | CORE_ADDR from, to, org_to; | |
539 | char *p, *pp; | |
540 | int adjusted_size = 0; | |
7556d4a4 | 541 | int relocated = 0; |
dde08ee1 PA |
542 | |
543 | p = buf + strlen ("qRelocInsn:"); | |
544 | pp = unpack_varlen_hex (p, &ul); | |
545 | if (*pp != ';') | |
cb91c06a | 546 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
547 | from = ul; |
548 | ||
549 | p = pp + 1; | |
a9cbf802 | 550 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
551 | to = ul; |
552 | ||
553 | org_to = to; | |
554 | ||
492d29ea | 555 | TRY |
dde08ee1 | 556 | { |
f5656ead | 557 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 558 | relocated = 1; |
dde08ee1 | 559 | } |
492d29ea | 560 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
561 | { |
562 | if (ex.error == MEMORY_ERROR) | |
563 | { | |
564 | /* Propagate memory errors silently back to the | |
565 | target. The stub may have limited the range of | |
566 | addresses we can write to, for example. */ | |
567 | } | |
568 | else | |
569 | { | |
570 | /* Something unexpectedly bad happened. Be verbose | |
571 | so we can tell what, and propagate the error back | |
572 | to the stub, so it doesn't get stuck waiting for | |
573 | a response. */ | |
574 | exception_fprintf (gdb_stderr, ex, | |
575 | _("warning: relocating instruction: ")); | |
576 | } | |
577 | putpkt ("E01"); | |
578 | } | |
492d29ea | 579 | END_CATCH |
7556d4a4 PA |
580 | |
581 | if (relocated) | |
dde08ee1 PA |
582 | { |
583 | adjusted_size = to - org_to; | |
584 | ||
bba74b36 | 585 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
586 | putpkt (buf); |
587 | } | |
dde08ee1 | 588 | } |
ad91cd99 | 589 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
590 | remote_console_output (buf + 1); /* 'O' message from stub */ |
591 | else | |
0df8b418 | 592 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
593 | } |
594 | while (1); | |
595 | } | |
3c3bea1c | 596 | |
d01949b6 AC |
597 | /* Handle for retreving the remote protocol data from gdbarch. */ |
598 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
599 | ||
ea9c271d DJ |
600 | static struct remote_arch_state * |
601 | get_remote_arch_state (void) | |
d01949b6 | 602 | { |
17d8546e | 603 | gdb_assert (target_gdbarch () != NULL); |
f5656ead | 604 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
605 | } |
606 | ||
0b83947e DJ |
607 | /* Fetch the global remote target state. */ |
608 | ||
609 | static struct remote_state * | |
610 | get_remote_state (void) | |
611 | { | |
612 | /* Make sure that the remote architecture state has been | |
613 | initialized, because doing so might reallocate rs->buf. Any | |
614 | function which calls getpkt also needs to be mindful of changes | |
615 | to rs->buf, but this call limits the number of places which run | |
616 | into trouble. */ | |
617 | get_remote_arch_state (); | |
618 | ||
619 | return get_remote_state_raw (); | |
620 | } | |
621 | ||
74ca34ce DJ |
622 | static int |
623 | compare_pnums (const void *lhs_, const void *rhs_) | |
624 | { | |
625 | const struct packet_reg * const *lhs = lhs_; | |
626 | const struct packet_reg * const *rhs = rhs_; | |
627 | ||
628 | if ((*lhs)->pnum < (*rhs)->pnum) | |
629 | return -1; | |
630 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
631 | return 0; | |
632 | else | |
633 | return 1; | |
634 | } | |
635 | ||
c21236dc PA |
636 | static int |
637 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 638 | { |
74ca34ce | 639 | int regnum, num_remote_regs, offset; |
74ca34ce | 640 | struct packet_reg **remote_regs; |
ea9c271d | 641 | |
4a22f64d | 642 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 643 | { |
c21236dc | 644 | struct packet_reg *r = ®s[regnum]; |
baef701f | 645 | |
4a22f64d | 646 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
647 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
648 | r->pnum = -1; | |
649 | else | |
650 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
651 | ||
b323314b | 652 | r->regnum = regnum; |
74ca34ce DJ |
653 | } |
654 | ||
655 | /* Define the g/G packet format as the contents of each register | |
656 | with a remote protocol number, in order of ascending protocol | |
657 | number. */ | |
658 | ||
4a22f64d | 659 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 660 | * sizeof (struct packet_reg *)); |
f57d151a | 661 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 662 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 663 | regnum++) |
c21236dc PA |
664 | if (regs[regnum].pnum != -1) |
665 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 666 | |
74ca34ce DJ |
667 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
668 | compare_pnums); | |
669 | ||
670 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
671 | { | |
672 | remote_regs[regnum]->in_g_packet = 1; | |
673 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 674 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
675 | } |
676 | ||
c21236dc PA |
677 | return offset; |
678 | } | |
679 | ||
680 | /* Given the architecture described by GDBARCH, return the remote | |
681 | protocol register's number and the register's offset in the g/G | |
682 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
683 | If the target does not have a mapping for REGNUM, return false, | |
684 | otherwise, return true. */ | |
685 | ||
686 | int | |
687 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
688 | int *pnum, int *poffset) | |
689 | { | |
690 | int sizeof_g_packet; | |
691 | struct packet_reg *regs; | |
692 | struct cleanup *old_chain; | |
693 | ||
694 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
695 | ||
696 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
697 | old_chain = make_cleanup (xfree, regs); | |
698 | ||
699 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
700 | ||
701 | *pnum = regs[regnum].pnum; | |
702 | *poffset = regs[regnum].offset; | |
703 | ||
704 | do_cleanups (old_chain); | |
705 | ||
706 | return *pnum != -1; | |
707 | } | |
708 | ||
709 | static void * | |
710 | init_remote_state (struct gdbarch *gdbarch) | |
711 | { | |
712 | struct remote_state *rs = get_remote_state_raw (); | |
713 | struct remote_arch_state *rsa; | |
714 | ||
715 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
716 | ||
717 | /* Use the architecture to build a regnum<->pnum table, which will be | |
718 | 1:1 unless a feature set specifies otherwise. */ | |
719 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
720 | gdbarch_num_regs (gdbarch), | |
721 | struct packet_reg); | |
722 | ||
74ca34ce DJ |
723 | /* Record the maximum possible size of the g packet - it may turn out |
724 | to be smaller. */ | |
c21236dc | 725 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 726 | |
0df8b418 | 727 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
728 | remote stubs have a hardwired buffer size of 400 bytes |
729 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
730 | as the maximum packet-size to ensure that the packet and an extra | |
731 | NUL character can always fit in the buffer. This stops GDB | |
732 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
733 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
734 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 735 | |
ea9c271d DJ |
736 | /* This one is filled in when a ``g'' packet is received. */ |
737 | rsa->actual_register_packet_size = 0; | |
738 | ||
739 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
740 | default, adjust the size accordingly. Remember that each byte is |
741 | encoded as two characters. 32 is the overhead for the packet | |
742 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 743 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 744 | little. */ |
ea9c271d DJ |
745 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
746 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 747 | |
ea9c271d DJ |
748 | /* Make sure that the packet buffer is plenty big enough for |
749 | this architecture. */ | |
750 | if (rs->buf_size < rsa->remote_packet_size) | |
751 | { | |
752 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 753 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 754 | } |
6d820c5c | 755 | |
ea9c271d DJ |
756 | return rsa; |
757 | } | |
758 | ||
759 | /* Return the current allowed size of a remote packet. This is | |
760 | inferred from the current architecture, and should be used to | |
761 | limit the length of outgoing packets. */ | |
762 | static long | |
763 | get_remote_packet_size (void) | |
764 | { | |
be2a5f71 | 765 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
766 | struct remote_arch_state *rsa = get_remote_arch_state (); |
767 | ||
be2a5f71 DJ |
768 | if (rs->explicit_packet_size) |
769 | return rs->explicit_packet_size; | |
770 | ||
ea9c271d | 771 | return rsa->remote_packet_size; |
d01949b6 AC |
772 | } |
773 | ||
ad10f812 | 774 | static struct packet_reg * |
ea9c271d | 775 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 776 | { |
f5656ead | 777 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
778 | return NULL; |
779 | else | |
ad10f812 | 780 | { |
ea9c271d | 781 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 782 | |
b323314b AC |
783 | gdb_assert (r->regnum == regnum); |
784 | return r; | |
ad10f812 | 785 | } |
ad10f812 AC |
786 | } |
787 | ||
788 | static struct packet_reg * | |
ea9c271d | 789 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 790 | { |
b323314b | 791 | int i; |
a744cf53 | 792 | |
f5656ead | 793 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 794 | { |
ea9c271d | 795 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 796 | |
b323314b AC |
797 | if (r->pnum == pnum) |
798 | return r; | |
ad10f812 AC |
799 | } |
800 | return NULL; | |
d01949b6 AC |
801 | } |
802 | ||
c906108c SS |
803 | static struct target_ops remote_ops; |
804 | ||
805 | static struct target_ops extended_remote_ops; | |
806 | ||
6426a772 JM |
807 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
808 | ``forever'' still use the normal timeout mechanism. This is | |
809 | currently used by the ASYNC code to guarentee that target reads | |
810 | during the initial connect always time-out. Once getpkt has been | |
811 | modified to return a timeout indication and, in turn | |
812 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 813 | this can go away. */ |
6426a772 JM |
814 | static int wait_forever_enabled_p = 1; |
815 | ||
9a7071a8 JB |
816 | /* Allow the user to specify what sequence to send to the remote |
817 | when he requests a program interruption: Although ^C is usually | |
818 | what remote systems expect (this is the default, here), it is | |
819 | sometimes preferable to send a break. On other systems such | |
820 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
821 | is required in order to interrupt the execution. */ | |
822 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
823 | const char interrupt_sequence_break[] = "BREAK"; | |
824 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 825 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
826 | { |
827 | interrupt_sequence_control_c, | |
828 | interrupt_sequence_break, | |
829 | interrupt_sequence_break_g, | |
830 | NULL | |
831 | }; | |
832 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
833 | ||
834 | static void | |
835 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
836 | struct cmd_list_element *c, | |
837 | const char *value) | |
838 | { | |
839 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
840 | fprintf_filtered (file, | |
841 | _("Send the ASCII ETX character (Ctrl-c) " | |
842 | "to the remote target to interrupt the " | |
843 | "execution of the program.\n")); | |
844 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
845 | fprintf_filtered (file, | |
846 | _("send a break signal to the remote target " | |
847 | "to interrupt the execution of the program.\n")); | |
848 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
849 | fprintf_filtered (file, | |
850 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
851 | "the remote target to interrupt the execution " | |
852 | "of Linux kernel.\n")); | |
853 | else | |
854 | internal_error (__FILE__, __LINE__, | |
855 | _("Invalid value for interrupt_sequence_mode: %s."), | |
856 | interrupt_sequence_mode); | |
857 | } | |
6426a772 | 858 | |
9a7071a8 JB |
859 | /* This boolean variable specifies whether interrupt_sequence is sent |
860 | to the remote target when gdb connects to it. | |
861 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
862 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
863 | static int interrupt_on_connect = 0; | |
c906108c | 864 | |
9a7071a8 JB |
865 | /* This variable is used to implement the "set/show remotebreak" commands. |
866 | Since these commands are now deprecated in favor of "set/show remote | |
867 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
868 | static int remote_break; |
869 | ||
9a7071a8 JB |
870 | static void |
871 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
872 | { | |
873 | if (remote_break) | |
874 | interrupt_sequence_mode = interrupt_sequence_break; | |
875 | else | |
876 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
877 | } | |
878 | ||
879 | static void | |
880 | show_remotebreak (struct ui_file *file, int from_tty, | |
881 | struct cmd_list_element *c, | |
882 | const char *value) | |
883 | { | |
884 | } | |
885 | ||
c906108c SS |
886 | /* This variable sets the number of bits in an address that are to be |
887 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 888 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
889 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
890 | initial implementation of remote.c restricted the address sent in | |
891 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
892 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
893 | address was never sent. Since fixing this bug may cause a break in | |
894 | some remote targets this variable is principly provided to | |
23860348 | 895 | facilitate backward compatibility. */ |
c906108c | 896 | |
883b9c6c | 897 | static unsigned int remote_address_size; |
c906108c | 898 | |
75c99385 PA |
899 | /* Temporary to track who currently owns the terminal. See |
900 | remote_terminal_* for more details. */ | |
6426a772 JM |
901 | |
902 | static int remote_async_terminal_ours_p; | |
903 | ||
2d717e4f DJ |
904 | /* The executable file to use for "run" on the remote side. */ |
905 | ||
906 | static char *remote_exec_file = ""; | |
907 | ||
11cf8741 | 908 | \f |
11cf8741 | 909 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
910 | memory read/write packet. MIN (rsa->remote_packet_size, |
911 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 912 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
913 | (speed up transfers). The variables ``preferred_*'' (the user |
914 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 915 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
916 | |
917 | struct memory_packet_config | |
918 | { | |
919 | char *name; | |
920 | long size; | |
921 | int fixed_p; | |
922 | }; | |
923 | ||
924 | /* Compute the current size of a read/write packet. Since this makes | |
925 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
926 | ||
927 | static long | |
928 | get_memory_packet_size (struct memory_packet_config *config) | |
929 | { | |
d01949b6 | 930 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
931 | struct remote_arch_state *rsa = get_remote_arch_state (); |
932 | ||
11cf8741 JM |
933 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
934 | law?) that some hosts don't cope very well with large alloca() | |
935 | calls. Eventually the alloca() code will be replaced by calls to | |
936 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 937 | be lifted or removed. */ |
11cf8741 JM |
938 | #ifndef MAX_REMOTE_PACKET_SIZE |
939 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
940 | #endif | |
3de11b2e | 941 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 942 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 943 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
944 | #endif |
945 | long what_they_get; | |
946 | if (config->fixed_p) | |
947 | { | |
948 | if (config->size <= 0) | |
949 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
950 | else | |
951 | what_they_get = config->size; | |
952 | } | |
953 | else | |
954 | { | |
ea9c271d | 955 | what_they_get = get_remote_packet_size (); |
23860348 | 956 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
957 | if (config->size > 0 |
958 | && what_they_get > config->size) | |
959 | what_they_get = config->size; | |
be2a5f71 DJ |
960 | |
961 | /* Limit it to the size of the targets ``g'' response unless we have | |
962 | permission from the stub to use a larger packet size. */ | |
963 | if (rs->explicit_packet_size == 0 | |
964 | && rsa->actual_register_packet_size > 0 | |
965 | && what_they_get > rsa->actual_register_packet_size) | |
966 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
967 | } |
968 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
969 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
970 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
971 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
972 | |
973 | /* Make sure there is room in the global buffer for this packet | |
974 | (including its trailing NUL byte). */ | |
975 | if (rs->buf_size < what_they_get + 1) | |
976 | { | |
977 | rs->buf_size = 2 * what_they_get; | |
978 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
979 | } | |
980 | ||
11cf8741 JM |
981 | return what_they_get; |
982 | } | |
983 | ||
0df8b418 | 984 | /* Update the size of a read/write packet. If they user wants |
23860348 | 985 | something really big then do a sanity check. */ |
11cf8741 JM |
986 | |
987 | static void | |
988 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
989 | { | |
990 | int fixed_p = config->fixed_p; | |
991 | long size = config->size; | |
a744cf53 | 992 | |
11cf8741 | 993 | if (args == NULL) |
8a3fe4f8 | 994 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
995 | else if (strcmp (args, "hard") == 0 |
996 | || strcmp (args, "fixed") == 0) | |
997 | fixed_p = 1; | |
998 | else if (strcmp (args, "soft") == 0 | |
999 | || strcmp (args, "limit") == 0) | |
1000 | fixed_p = 0; | |
1001 | else | |
1002 | { | |
1003 | char *end; | |
a744cf53 | 1004 | |
11cf8741 JM |
1005 | size = strtoul (args, &end, 0); |
1006 | if (args == end) | |
8a3fe4f8 | 1007 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
1008 | #if 0 |
1009 | /* Instead of explicitly capping the size of a packet to | |
1010 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1011 | instead allowed to set the size to something arbitrarily | |
23860348 | 1012 | large. */ |
11cf8741 | 1013 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 1014 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
1015 | #endif |
1016 | } | |
23860348 | 1017 | /* Extra checks? */ |
11cf8741 JM |
1018 | if (fixed_p && !config->fixed_p) |
1019 | { | |
e2e0b3e5 AC |
1020 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1021 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1022 | config->name, size)) |
8a3fe4f8 | 1023 | error (_("Packet size not changed.")); |
11cf8741 | 1024 | } |
23860348 | 1025 | /* Update the config. */ |
11cf8741 JM |
1026 | config->fixed_p = fixed_p; |
1027 | config->size = size; | |
1028 | } | |
1029 | ||
1030 | static void | |
1031 | show_memory_packet_size (struct memory_packet_config *config) | |
1032 | { | |
a3f17187 | 1033 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1034 | if (config->fixed_p) |
a3f17187 | 1035 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1036 | get_memory_packet_size (config)); |
1037 | else | |
a3f17187 | 1038 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1039 | get_memory_packet_size (config)); |
1040 | } | |
1041 | ||
1042 | static struct memory_packet_config memory_write_packet_config = | |
1043 | { | |
1044 | "memory-write-packet-size", | |
1045 | }; | |
1046 | ||
1047 | static void | |
1048 | set_memory_write_packet_size (char *args, int from_tty) | |
1049 | { | |
1050 | set_memory_packet_size (args, &memory_write_packet_config); | |
1051 | } | |
1052 | ||
1053 | static void | |
1054 | show_memory_write_packet_size (char *args, int from_tty) | |
1055 | { | |
1056 | show_memory_packet_size (&memory_write_packet_config); | |
1057 | } | |
1058 | ||
1059 | static long | |
1060 | get_memory_write_packet_size (void) | |
1061 | { | |
1062 | return get_memory_packet_size (&memory_write_packet_config); | |
1063 | } | |
1064 | ||
1065 | static struct memory_packet_config memory_read_packet_config = | |
1066 | { | |
1067 | "memory-read-packet-size", | |
1068 | }; | |
1069 | ||
1070 | static void | |
1071 | set_memory_read_packet_size (char *args, int from_tty) | |
1072 | { | |
1073 | set_memory_packet_size (args, &memory_read_packet_config); | |
1074 | } | |
1075 | ||
1076 | static void | |
1077 | show_memory_read_packet_size (char *args, int from_tty) | |
1078 | { | |
1079 | show_memory_packet_size (&memory_read_packet_config); | |
1080 | } | |
1081 | ||
1082 | static long | |
1083 | get_memory_read_packet_size (void) | |
1084 | { | |
1085 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1086 | |
11cf8741 JM |
1087 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1088 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1089 | increased beyond this. */ |
1090 | if (size > get_remote_packet_size ()) | |
1091 | size = get_remote_packet_size (); | |
11cf8741 JM |
1092 | return size; |
1093 | } | |
1094 | ||
11cf8741 | 1095 | \f |
5a2468f5 | 1096 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1097 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1098 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1099 | |
1100 | enum packet_support | |
1101 | { | |
1102 | PACKET_SUPPORT_UNKNOWN = 0, | |
1103 | PACKET_ENABLE, | |
1104 | PACKET_DISABLE | |
1105 | }; | |
1106 | ||
5a2468f5 JM |
1107 | struct packet_config |
1108 | { | |
bb572ddd DJ |
1109 | const char *name; |
1110 | const char *title; | |
4082afcc PA |
1111 | |
1112 | /* If auto, GDB auto-detects support for this packet or feature, | |
1113 | either through qSupported, or by trying the packet and looking | |
1114 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1115 | packet. If false, the packet is disabled. Configs that don't |
1116 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1117 | enum auto_boolean detect; |
4082afcc PA |
1118 | |
1119 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1120 | enum packet_support support; |
1121 | }; | |
1122 | ||
d471ea57 | 1123 | /* Analyze a packet's return value and update the packet config |
23860348 | 1124 | accordingly. */ |
d471ea57 AC |
1125 | |
1126 | enum packet_result | |
1127 | { | |
1128 | PACKET_ERROR, | |
1129 | PACKET_OK, | |
1130 | PACKET_UNKNOWN | |
1131 | }; | |
1132 | ||
4082afcc PA |
1133 | static enum packet_support packet_config_support (struct packet_config *config); |
1134 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1135 | |
1136 | static void | |
fba45db2 | 1137 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1138 | { |
1139 | char *support = "internal-error"; | |
a744cf53 | 1140 | |
4082afcc | 1141 | switch (packet_config_support (config)) |
5a2468f5 JM |
1142 | { |
1143 | case PACKET_ENABLE: | |
1144 | support = "enabled"; | |
1145 | break; | |
1146 | case PACKET_DISABLE: | |
1147 | support = "disabled"; | |
1148 | break; | |
1149 | case PACKET_SUPPORT_UNKNOWN: | |
1150 | support = "unknown"; | |
1151 | break; | |
1152 | } | |
1153 | switch (config->detect) | |
1154 | { | |
7f19b9a2 | 1155 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1156 | printf_filtered (_("Support for the `%s' packet " |
1157 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1158 | config->name, support); |
5a2468f5 | 1159 | break; |
7f19b9a2 AC |
1160 | case AUTO_BOOLEAN_TRUE: |
1161 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1162 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1163 | config->name, support); | |
8e248173 | 1164 | break; |
5a2468f5 JM |
1165 | } |
1166 | } | |
1167 | ||
1168 | static void | |
bb572ddd DJ |
1169 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1170 | const char *title, int legacy) | |
d471ea57 | 1171 | { |
5a2468f5 JM |
1172 | char *set_doc; |
1173 | char *show_doc; | |
d471ea57 | 1174 | char *cmd_name; |
3ed07be4 | 1175 | |
5a2468f5 JM |
1176 | config->name = name; |
1177 | config->title = title; | |
b435e160 AC |
1178 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1179 | name, title); | |
3e43a32a MS |
1180 | show_doc = xstrprintf ("Show current use of remote " |
1181 | "protocol `%s' (%s) packet", | |
b435e160 | 1182 | name, title); |
d471ea57 | 1183 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1184 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1185 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1186 | &config->detect, set_doc, |
1187 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1188 | NULL, |
bb572ddd DJ |
1189 | show_remote_protocol_packet_cmd, |
1190 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1191 | /* The command code copies the documentation strings. */ |
1192 | xfree (set_doc); | |
1193 | xfree (show_doc); | |
23860348 | 1194 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1195 | if (legacy) |
1196 | { | |
1197 | char *legacy_name; | |
a744cf53 | 1198 | |
b435e160 | 1199 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1200 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1201 | &remote_set_cmdlist); |
d471ea57 | 1202 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1203 | &remote_show_cmdlist); |
d471ea57 | 1204 | } |
5a2468f5 JM |
1205 | } |
1206 | ||
d471ea57 | 1207 | static enum packet_result |
a76d924d | 1208 | packet_check_result (const char *buf) |
5a2468f5 | 1209 | { |
d471ea57 | 1210 | if (buf[0] != '\0') |
5a2468f5 | 1211 | { |
d471ea57 | 1212 | /* The stub recognized the packet request. Check that the |
23860348 | 1213 | operation succeeded. */ |
a76d924d DJ |
1214 | if (buf[0] == 'E' |
1215 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1216 | && buf[3] == '\0') | |
1217 | /* "Enn" - definitly an error. */ | |
1218 | return PACKET_ERROR; | |
1219 | ||
1220 | /* Always treat "E." as an error. This will be used for | |
1221 | more verbose error messages, such as E.memtypes. */ | |
1222 | if (buf[0] == 'E' && buf[1] == '.') | |
1223 | return PACKET_ERROR; | |
1224 | ||
1225 | /* The packet may or may not be OK. Just assume it is. */ | |
1226 | return PACKET_OK; | |
1227 | } | |
1228 | else | |
1229 | /* The stub does not support the packet. */ | |
1230 | return PACKET_UNKNOWN; | |
1231 | } | |
1232 | ||
1233 | static enum packet_result | |
1234 | packet_ok (const char *buf, struct packet_config *config) | |
1235 | { | |
1236 | enum packet_result result; | |
1237 | ||
4082afcc PA |
1238 | if (config->detect != AUTO_BOOLEAN_TRUE |
1239 | && config->support == PACKET_DISABLE) | |
1240 | internal_error (__FILE__, __LINE__, | |
1241 | _("packet_ok: attempt to use a disabled packet")); | |
1242 | ||
a76d924d DJ |
1243 | result = packet_check_result (buf); |
1244 | switch (result) | |
1245 | { | |
1246 | case PACKET_OK: | |
1247 | case PACKET_ERROR: | |
1248 | /* The stub recognized the packet request. */ | |
4082afcc | 1249 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1250 | { |
d471ea57 AC |
1251 | if (remote_debug) |
1252 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1253 | "Packet %s (%s) is supported\n", |
1254 | config->name, config->title); | |
d471ea57 | 1255 | config->support = PACKET_ENABLE; |
d471ea57 | 1256 | } |
a76d924d DJ |
1257 | break; |
1258 | case PACKET_UNKNOWN: | |
23860348 | 1259 | /* The stub does not support the packet. */ |
4082afcc PA |
1260 | if (config->detect == AUTO_BOOLEAN_AUTO |
1261 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1262 | { |
4082afcc PA |
1263 | /* If the stub previously indicated that the packet was |
1264 | supported then there is a protocol error. */ | |
1265 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1266 | config->name, config->title); | |
1267 | } | |
1268 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1269 | { | |
1270 | /* The user set it wrong. */ | |
1271 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1272 | config->name, config->title); | |
d471ea57 | 1273 | } |
4082afcc PA |
1274 | |
1275 | if (remote_debug) | |
1276 | fprintf_unfiltered (gdb_stdlog, | |
1277 | "Packet %s (%s) is NOT supported\n", | |
1278 | config->name, config->title); | |
1279 | config->support = PACKET_DISABLE; | |
a76d924d | 1280 | break; |
5a2468f5 | 1281 | } |
a76d924d DJ |
1282 | |
1283 | return result; | |
5a2468f5 JM |
1284 | } |
1285 | ||
444abaca DJ |
1286 | enum { |
1287 | PACKET_vCont = 0, | |
1288 | PACKET_X, | |
1289 | PACKET_qSymbol, | |
1290 | PACKET_P, | |
1291 | PACKET_p, | |
1292 | PACKET_Z0, | |
1293 | PACKET_Z1, | |
1294 | PACKET_Z2, | |
1295 | PACKET_Z3, | |
1296 | PACKET_Z4, | |
15a201c8 | 1297 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1298 | PACKET_vFile_open, |
1299 | PACKET_vFile_pread, | |
1300 | PACKET_vFile_pwrite, | |
1301 | PACKET_vFile_close, | |
1302 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1303 | PACKET_vFile_readlink, |
0a93529c | 1304 | PACKET_vFile_fstat, |
0876f84a | 1305 | PACKET_qXfer_auxv, |
23181151 | 1306 | PACKET_qXfer_features, |
c78fa86a | 1307 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1308 | PACKET_qXfer_libraries, |
2268b414 | 1309 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1310 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1311 | PACKET_qXfer_spu_read, |
1312 | PACKET_qXfer_spu_write, | |
07e059b5 | 1313 | PACKET_qXfer_osdata, |
dc146f7c | 1314 | PACKET_qXfer_threads, |
0fb4aa4b | 1315 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1316 | PACKET_qXfer_traceframe_info, |
169081d0 | 1317 | PACKET_qXfer_uib, |
711e434b | 1318 | PACKET_qGetTIBAddr, |
444abaca | 1319 | PACKET_qGetTLSAddr, |
be2a5f71 | 1320 | PACKET_qSupported, |
bd3eecc3 | 1321 | PACKET_qTStatus, |
89be2091 | 1322 | PACKET_QPassSignals, |
9b224c5e | 1323 | PACKET_QProgramSignals, |
936d2992 | 1324 | PACKET_qCRC, |
08388c79 | 1325 | PACKET_qSearch_memory, |
2d717e4f DJ |
1326 | PACKET_vAttach, |
1327 | PACKET_vRun, | |
a6f3e723 | 1328 | PACKET_QStartNoAckMode, |
82f73884 | 1329 | PACKET_vKill, |
4aa995e1 PA |
1330 | PACKET_qXfer_siginfo_read, |
1331 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1332 | PACKET_qAttached, |
4082afcc PA |
1333 | |
1334 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1335 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1336 | |
1337 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1338 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1339 | |
1340 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1341 | PACKET_BreakpointCommands, |
4082afcc PA |
1342 | |
1343 | /* Support for fast tracepoints. */ | |
7a697b8d | 1344 | PACKET_FastTracepoints, |
4082afcc PA |
1345 | |
1346 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1347 | PACKET_StaticTracepoints, |
4082afcc PA |
1348 | |
1349 | /* Support for installing tracepoints while a trace experiment is | |
1350 | running. */ | |
1e4d1764 | 1351 | PACKET_InstallInTrace, |
4082afcc | 1352 | |
40ab02ce MS |
1353 | PACKET_bc, |
1354 | PACKET_bs, | |
409873ef | 1355 | PACKET_TracepointSource, |
d914c394 | 1356 | PACKET_QAllow, |
78d85199 | 1357 | PACKET_qXfer_fdpic, |
03583c20 | 1358 | PACKET_QDisableRandomization, |
d1feda86 | 1359 | PACKET_QAgent, |
f6f899bf | 1360 | PACKET_QTBuffer_size, |
9accd112 MM |
1361 | PACKET_Qbtrace_off, |
1362 | PACKET_Qbtrace_bts, | |
b20a6524 | 1363 | PACKET_Qbtrace_pt, |
9accd112 | 1364 | PACKET_qXfer_btrace, |
4082afcc PA |
1365 | |
1366 | /* Support for the QNonStop packet. */ | |
1367 | PACKET_QNonStop, | |
1368 | ||
1369 | /* Support for multi-process extensions. */ | |
1370 | PACKET_multiprocess_feature, | |
1371 | ||
1372 | /* Support for enabling and disabling tracepoints while a trace | |
1373 | experiment is running. */ | |
1374 | PACKET_EnableDisableTracepoints_feature, | |
1375 | ||
1376 | /* Support for collecting strings using the tracenz bytecode. */ | |
1377 | PACKET_tracenz_feature, | |
1378 | ||
1379 | /* Support for continuing to run a trace experiment while GDB is | |
1380 | disconnected. */ | |
1381 | PACKET_DisconnectedTracing_feature, | |
1382 | ||
1383 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1384 | PACKET_augmented_libraries_svr4_read_feature, | |
1385 | ||
f4abbc16 MM |
1386 | /* Support for the qXfer:btrace-conf:read packet. */ |
1387 | PACKET_qXfer_btrace_conf, | |
1388 | ||
d33501a5 MM |
1389 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1390 | PACKET_Qbtrace_conf_bts_size, | |
1391 | ||
f7e6eed5 PA |
1392 | /* Support for swbreak+ feature. */ |
1393 | PACKET_swbreak_feature, | |
1394 | ||
1395 | /* Support for hwbreak+ feature. */ | |
1396 | PACKET_hwbreak_feature, | |
1397 | ||
89245bc0 DB |
1398 | /* Support for fork events. */ |
1399 | PACKET_fork_event_feature, | |
1400 | ||
1401 | /* Support for vfork events. */ | |
1402 | PACKET_vfork_event_feature, | |
1403 | ||
b20a6524 MM |
1404 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1405 | PACKET_Qbtrace_conf_pt_size, | |
1406 | ||
444abaca DJ |
1407 | PACKET_MAX |
1408 | }; | |
506fb367 | 1409 | |
444abaca | 1410 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1411 | |
f7e6eed5 PA |
1412 | /* Returns the packet's corresponding "set remote foo-packet" command |
1413 | state. See struct packet_config for more details. */ | |
1414 | ||
1415 | static enum auto_boolean | |
1416 | packet_set_cmd_state (int packet) | |
1417 | { | |
1418 | return remote_protocol_packets[packet].detect; | |
1419 | } | |
1420 | ||
4082afcc PA |
1421 | /* Returns whether a given packet or feature is supported. This takes |
1422 | into account the state of the corresponding "set remote foo-packet" | |
1423 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1424 | |
4082afcc PA |
1425 | static enum packet_support |
1426 | packet_config_support (struct packet_config *config) | |
1427 | { | |
1428 | switch (config->detect) | |
444abaca | 1429 | { |
4082afcc PA |
1430 | case AUTO_BOOLEAN_TRUE: |
1431 | return PACKET_ENABLE; | |
1432 | case AUTO_BOOLEAN_FALSE: | |
1433 | return PACKET_DISABLE; | |
1434 | case AUTO_BOOLEAN_AUTO: | |
1435 | return config->support; | |
1436 | default: | |
1437 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1438 | } |
4082afcc PA |
1439 | } |
1440 | ||
1441 | /* Same as packet_config_support, but takes the packet's enum value as | |
1442 | argument. */ | |
1443 | ||
1444 | static enum packet_support | |
1445 | packet_support (int packet) | |
1446 | { | |
1447 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1448 | ||
1449 | return packet_config_support (config); | |
dc8acb97 MS |
1450 | } |
1451 | ||
5a2468f5 | 1452 | static void |
444abaca DJ |
1453 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1454 | struct cmd_list_element *c, | |
1455 | const char *value) | |
5a2468f5 | 1456 | { |
444abaca | 1457 | struct packet_config *packet; |
5a2468f5 | 1458 | |
444abaca DJ |
1459 | for (packet = remote_protocol_packets; |
1460 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1461 | packet++) | |
1462 | { | |
1463 | if (&packet->detect == c->var) | |
1464 | { | |
1465 | show_packet_config_cmd (packet); | |
1466 | return; | |
1467 | } | |
1468 | } | |
9b20d036 | 1469 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1470 | c->name); |
5a2468f5 JM |
1471 | } |
1472 | ||
d471ea57 AC |
1473 | /* Should we try one of the 'Z' requests? */ |
1474 | ||
1475 | enum Z_packet_type | |
1476 | { | |
1477 | Z_PACKET_SOFTWARE_BP, | |
1478 | Z_PACKET_HARDWARE_BP, | |
1479 | Z_PACKET_WRITE_WP, | |
1480 | Z_PACKET_READ_WP, | |
1481 | Z_PACKET_ACCESS_WP, | |
1482 | NR_Z_PACKET_TYPES | |
1483 | }; | |
96baa820 | 1484 | |
d471ea57 | 1485 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1486 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1487 | |
7f19b9a2 | 1488 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1489 | |
1490 | static void | |
fba45db2 KB |
1491 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1492 | struct cmd_list_element *c) | |
96baa820 | 1493 | { |
d471ea57 | 1494 | int i; |
a744cf53 | 1495 | |
d471ea57 | 1496 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1497 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1498 | } |
1499 | ||
1500 | static void | |
08546159 AC |
1501 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1502 | struct cmd_list_element *c, | |
1503 | const char *value) | |
96baa820 | 1504 | { |
d471ea57 | 1505 | int i; |
a744cf53 | 1506 | |
d471ea57 AC |
1507 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1508 | { | |
444abaca | 1509 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1510 | } |
96baa820 JM |
1511 | } |
1512 | ||
4082afcc PA |
1513 | /* Returns true if the multi-process extensions are in effect. */ |
1514 | ||
1515 | static int | |
1516 | remote_multi_process_p (struct remote_state *rs) | |
1517 | { | |
1518 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1519 | } | |
1520 | ||
de0d863e DB |
1521 | /* Returns true if fork events are supported. */ |
1522 | ||
1523 | static int | |
1524 | remote_fork_event_p (struct remote_state *rs) | |
1525 | { | |
1526 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1527 | } | |
1528 | ||
c269dbdb DB |
1529 | /* Returns true if vfork events are supported. */ |
1530 | ||
1531 | static int | |
1532 | remote_vfork_event_p (struct remote_state *rs) | |
1533 | { | |
1534 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1535 | } | |
1536 | ||
cbb8991c DB |
1537 | /* Insert fork catchpoint target routine. If fork events are enabled |
1538 | then return success, nothing more to do. */ | |
1539 | ||
1540 | static int | |
1541 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1542 | { | |
1543 | struct remote_state *rs = get_remote_state (); | |
1544 | ||
1545 | return !remote_fork_event_p (rs); | |
1546 | } | |
1547 | ||
1548 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1549 | return success. */ | |
1550 | ||
1551 | static int | |
1552 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1553 | { | |
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1558 | then return success, nothing more to do. */ | |
1559 | ||
1560 | static int | |
1561 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1562 | { | |
1563 | struct remote_state *rs = get_remote_state (); | |
1564 | ||
1565 | return !remote_vfork_event_p (rs); | |
1566 | } | |
1567 | ||
1568 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1569 | return success. */ | |
1570 | ||
1571 | static int | |
1572 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1573 | { | |
1574 | return 0; | |
1575 | } | |
1576 | ||
23860348 | 1577 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1578 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1579 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1580 | |
74531fed PA |
1581 | \f |
1582 | /* Asynchronous signal handle registered as event loop source for | |
1583 | when we have pending events ready to be passed to the core. */ | |
1584 | ||
1585 | static struct async_event_handler *remote_async_inferior_event_token; | |
1586 | ||
c906108c SS |
1587 | \f |
1588 | ||
79d7f229 PA |
1589 | static ptid_t magic_null_ptid; |
1590 | static ptid_t not_sent_ptid; | |
1591 | static ptid_t any_thread_ptid; | |
1592 | ||
0b16c5cf PA |
1593 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1594 | detach instead of killing it when bailing out). */ | |
1595 | ||
1596 | static int | |
1597 | remote_query_attached (int pid) | |
1598 | { | |
1599 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1600 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1601 | |
4082afcc | 1602 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1603 | return 0; |
1604 | ||
1605 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1606 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1607 | else |
bba74b36 | 1608 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1609 | |
1610 | putpkt (rs->buf); | |
1611 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1612 | ||
1613 | switch (packet_ok (rs->buf, | |
1554e9be | 1614 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1615 | { |
1616 | case PACKET_OK: | |
1617 | if (strcmp (rs->buf, "1") == 0) | |
1618 | return 1; | |
1619 | break; | |
1620 | case PACKET_ERROR: | |
1621 | warning (_("Remote failure reply: %s"), rs->buf); | |
1622 | break; | |
1623 | case PACKET_UNKNOWN: | |
1624 | break; | |
1625 | } | |
1626 | ||
1627 | return 0; | |
1628 | } | |
1629 | ||
49c62f2e PA |
1630 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1631 | has been invented by GDB, instead of reported by the target. Since | |
1632 | we can be connected to a remote system before before knowing about | |
1633 | any inferior, mark the target with execution when we find the first | |
1634 | inferior. If ATTACHED is 1, then we had just attached to this | |
1635 | inferior. If it is 0, then we just created this inferior. If it | |
1636 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1637 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1638 | attempt to open this inferior's executable as the main executable | |
1639 | if no main executable is open already. */ | |
1941c569 PA |
1640 | |
1641 | static struct inferior * | |
1b6e6f5c GB |
1642 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1643 | int try_open_exec) | |
1941c569 | 1644 | { |
1941c569 PA |
1645 | struct inferior *inf; |
1646 | ||
0b16c5cf PA |
1647 | /* Check whether this process we're learning about is to be |
1648 | considered attached, or if is to be considered to have been | |
1649 | spawned by the stub. */ | |
1650 | if (attached == -1) | |
1651 | attached = remote_query_attached (pid); | |
1652 | ||
f5656ead | 1653 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1654 | { |
1655 | /* If the target shares code across all inferiors, then every | |
1656 | attach adds a new inferior. */ | |
1657 | inf = add_inferior (pid); | |
1658 | ||
1659 | /* ... and every inferior is bound to the same program space. | |
1660 | However, each inferior may still have its own address | |
1661 | space. */ | |
1662 | inf->aspace = maybe_new_address_space (); | |
1663 | inf->pspace = current_program_space; | |
1664 | } | |
1665 | else | |
1666 | { | |
1667 | /* In the traditional debugging scenario, there's a 1-1 match | |
1668 | between program/address spaces. We simply bind the inferior | |
1669 | to the program space's address space. */ | |
1670 | inf = current_inferior (); | |
1671 | inferior_appeared (inf, pid); | |
1672 | } | |
1941c569 | 1673 | |
0b16c5cf | 1674 | inf->attach_flag = attached; |
49c62f2e | 1675 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1676 | |
1b6e6f5c GB |
1677 | /* If no main executable is currently open then attempt to |
1678 | open the file that was executed to create this inferior. */ | |
835205d0 | 1679 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1680 | exec_file_locate_attach (pid, 1); |
1681 | ||
1941c569 PA |
1682 | return inf; |
1683 | } | |
1684 | ||
1685 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1686 | according to RUNNING. */ | |
1687 | ||
c906108c | 1688 | static void |
1941c569 | 1689 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1690 | { |
b7ea362b PA |
1691 | struct remote_state *rs = get_remote_state (); |
1692 | ||
1693 | /* GDB historically didn't pull threads in the initial connection | |
1694 | setup. If the remote target doesn't even have a concept of | |
1695 | threads (e.g., a bare-metal target), even if internally we | |
1696 | consider that a single-threaded target, mentioning a new thread | |
1697 | might be confusing to the user. Be silent then, preserving the | |
1698 | age old behavior. */ | |
1699 | if (rs->starting_up) | |
1700 | add_thread_silent (ptid); | |
1701 | else | |
1702 | add_thread (ptid); | |
1941c569 PA |
1703 | |
1704 | set_executing (ptid, running); | |
1705 | set_running (ptid, running); | |
1706 | } | |
1707 | ||
1708 | /* Come here when we learn about a thread id from the remote target. | |
1709 | It may be the first time we hear about such thread, so take the | |
1710 | opportunity to add it to GDB's thread list. In case this is the | |
1711 | first time we're noticing its corresponding inferior, add it to | |
1712 | GDB's inferior list as well. */ | |
1713 | ||
1714 | static void | |
1715 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1716 | { | |
c906108c SS |
1717 | /* If this is a new thread, add it to GDB's thread list. |
1718 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1719 | |
1720 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1721 | { | |
1722 | /* We're seeing an event on a thread id we knew had exited. | |
1723 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1724 | remote_add_thread (currthread, running); |
82f73884 PA |
1725 | return; |
1726 | } | |
1727 | ||
79d7f229 | 1728 | if (!in_thread_list (currthread)) |
c0a2216e | 1729 | { |
1941c569 | 1730 | struct inferior *inf = NULL; |
bad34192 | 1731 | int pid = ptid_get_pid (currthread); |
1941c569 | 1732 | |
bad34192 PA |
1733 | if (ptid_is_pid (inferior_ptid) |
1734 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1735 | { |
1736 | /* inferior_ptid has no thread member yet. This can happen | |
1737 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1738 | stub doesn't support qC. This is the first stop reported | |
1739 | after an attach, so this is the main thread. Update the | |
1740 | ptid in the thread list. */ | |
bad34192 PA |
1741 | if (in_thread_list (pid_to_ptid (pid))) |
1742 | thread_change_ptid (inferior_ptid, currthread); | |
1743 | else | |
1744 | { | |
1745 | remote_add_thread (currthread, running); | |
1746 | inferior_ptid = currthread; | |
1747 | } | |
dc146f7c | 1748 | return; |
c0a2216e | 1749 | } |
82f73884 PA |
1750 | |
1751 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1752 | { |
1753 | /* inferior_ptid is not set yet. This can happen with the | |
1754 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1755 | doesn't support qC. This is the first stop reported | |
1756 | after an attach, so this is the main thread. Update the | |
1757 | ptid in the thread list. */ | |
dc146f7c | 1758 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1759 | return; |
c0a2216e | 1760 | } |
82f73884 | 1761 | |
29c87f7f PA |
1762 | /* When connecting to a target remote, or to a target |
1763 | extended-remote which already was debugging an inferior, we | |
1764 | may not know about it yet. Add it before adding its child | |
1765 | thread, so notifications are emitted in a sensible order. */ | |
1766 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1767 | { |
1768 | struct remote_state *rs = get_remote_state (); | |
1769 | int fake_pid_p = !remote_multi_process_p (rs); | |
1770 | ||
1771 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1772 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1773 | } |
29c87f7f | 1774 | |
82f73884 | 1775 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1776 | remote_add_thread (currthread, running); |
1777 | ||
1778 | /* If we found a new inferior, let the common code do whatever | |
1779 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1780 | breakpoints), unless we're just setting up an all-stop |
1781 | connection. */ | |
1941c569 | 1782 | if (inf != NULL) |
b7ea362b PA |
1783 | { |
1784 | struct remote_state *rs = get_remote_state (); | |
1785 | ||
1786 | if (non_stop || !rs->starting_up) | |
1787 | notice_new_inferior (currthread, running, 0); | |
1788 | } | |
c0a2216e | 1789 | } |
c906108c SS |
1790 | } |
1791 | ||
dc146f7c VP |
1792 | /* Return the private thread data, creating it if necessary. */ |
1793 | ||
70221824 | 1794 | static struct private_thread_info * |
dc146f7c VP |
1795 | demand_private_info (ptid_t ptid) |
1796 | { | |
1797 | struct thread_info *info = find_thread_ptid (ptid); | |
1798 | ||
1799 | gdb_assert (info); | |
1800 | ||
fe978cb0 | 1801 | if (!info->priv) |
dc146f7c | 1802 | { |
8d749320 | 1803 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1804 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1805 | info->priv->core = -1; |
1806 | info->priv->extra = 0; | |
dc146f7c VP |
1807 | } |
1808 | ||
fe978cb0 | 1809 | return info->priv; |
dc146f7c VP |
1810 | } |
1811 | ||
74531fed PA |
1812 | /* Call this function as a result of |
1813 | 1) A halt indication (T packet) containing a thread id | |
1814 | 2) A direct query of currthread | |
0df8b418 | 1815 | 3) Successful execution of set thread */ |
74531fed PA |
1816 | |
1817 | static void | |
47f8a51d | 1818 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1819 | { |
47f8a51d | 1820 | rs->general_thread = currthread; |
74531fed PA |
1821 | } |
1822 | ||
89be2091 DJ |
1823 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1824 | it can simply pass through to the inferior without reporting. */ | |
1825 | ||
1826 | static void | |
94bedb42 TT |
1827 | remote_pass_signals (struct target_ops *self, |
1828 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1829 | { |
4082afcc | 1830 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1831 | { |
1832 | char *pass_packet, *p; | |
89be2091 | 1833 | int count = 0, i; |
747dc59d | 1834 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1835 | |
1836 | gdb_assert (numsigs < 256); | |
1837 | for (i = 0; i < numsigs; i++) | |
1838 | { | |
2455069d | 1839 | if (pass_signals[i]) |
89be2091 DJ |
1840 | count++; |
1841 | } | |
1842 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1843 | strcpy (pass_packet, "QPassSignals:"); | |
1844 | p = pass_packet + strlen (pass_packet); | |
1845 | for (i = 0; i < numsigs; i++) | |
1846 | { | |
2455069d | 1847 | if (pass_signals[i]) |
89be2091 DJ |
1848 | { |
1849 | if (i >= 16) | |
1850 | *p++ = tohex (i >> 4); | |
1851 | *p++ = tohex (i & 15); | |
1852 | if (count) | |
1853 | *p++ = ';'; | |
1854 | else | |
1855 | break; | |
1856 | count--; | |
1857 | } | |
1858 | } | |
1859 | *p = 0; | |
747dc59d | 1860 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1861 | { |
89be2091 DJ |
1862 | putpkt (pass_packet); |
1863 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1864 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1865 | if (rs->last_pass_packet) |
1866 | xfree (rs->last_pass_packet); | |
1867 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1868 | } |
1869 | else | |
1870 | xfree (pass_packet); | |
1871 | } | |
1872 | } | |
1873 | ||
9b224c5e PA |
1874 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1875 | signals it should pass through to the inferior when detaching. */ | |
1876 | ||
1877 | static void | |
daf5e9b6 TT |
1878 | remote_program_signals (struct target_ops *self, |
1879 | int numsigs, unsigned char *signals) | |
9b224c5e | 1880 | { |
4082afcc | 1881 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1882 | { |
1883 | char *packet, *p; | |
1884 | int count = 0, i; | |
5e4a05c4 | 1885 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1886 | |
1887 | gdb_assert (numsigs < 256); | |
1888 | for (i = 0; i < numsigs; i++) | |
1889 | { | |
1890 | if (signals[i]) | |
1891 | count++; | |
1892 | } | |
1893 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1894 | strcpy (packet, "QProgramSignals:"); | |
1895 | p = packet + strlen (packet); | |
1896 | for (i = 0; i < numsigs; i++) | |
1897 | { | |
1898 | if (signal_pass_state (i)) | |
1899 | { | |
1900 | if (i >= 16) | |
1901 | *p++ = tohex (i >> 4); | |
1902 | *p++ = tohex (i & 15); | |
1903 | if (count) | |
1904 | *p++ = ';'; | |
1905 | else | |
1906 | break; | |
1907 | count--; | |
1908 | } | |
1909 | } | |
1910 | *p = 0; | |
5e4a05c4 TT |
1911 | if (!rs->last_program_signals_packet |
1912 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1913 | { |
9b224c5e PA |
1914 | putpkt (packet); |
1915 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1916 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1917 | xfree (rs->last_program_signals_packet); |
1918 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1919 | } |
1920 | else | |
1921 | xfree (packet); | |
1922 | } | |
1923 | } | |
1924 | ||
79d7f229 PA |
1925 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1926 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1927 | thread. If GEN is set, set the general thread, if not, then set | |
1928 | the step/continue thread. */ | |
c906108c | 1929 | static void |
79d7f229 | 1930 | set_thread (struct ptid ptid, int gen) |
c906108c | 1931 | { |
d01949b6 | 1932 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1933 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1934 | char *buf = rs->buf; |
79d7f229 | 1935 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1936 | |
79d7f229 | 1937 | if (ptid_equal (state, ptid)) |
c906108c SS |
1938 | return; |
1939 | ||
79d7f229 PA |
1940 | *buf++ = 'H'; |
1941 | *buf++ = gen ? 'g' : 'c'; | |
1942 | if (ptid_equal (ptid, magic_null_ptid)) | |
1943 | xsnprintf (buf, endbuf - buf, "0"); | |
1944 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1945 | xsnprintf (buf, endbuf - buf, "0"); | |
1946 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1947 | xsnprintf (buf, endbuf - buf, "-1"); | |
1948 | else | |
82f73884 | 1949 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1950 | putpkt (rs->buf); |
6d820c5c | 1951 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1952 | if (gen) |
47f8a51d | 1953 | rs->general_thread = ptid; |
c906108c | 1954 | else |
47f8a51d | 1955 | rs->continue_thread = ptid; |
c906108c | 1956 | } |
79d7f229 PA |
1957 | |
1958 | static void | |
1959 | set_general_thread (struct ptid ptid) | |
1960 | { | |
1961 | set_thread (ptid, 1); | |
1962 | } | |
1963 | ||
1964 | static void | |
1965 | set_continue_thread (struct ptid ptid) | |
1966 | { | |
1967 | set_thread (ptid, 0); | |
1968 | } | |
1969 | ||
3c9c4b83 PA |
1970 | /* Change the remote current process. Which thread within the process |
1971 | ends up selected isn't important, as long as it is the same process | |
1972 | as what INFERIOR_PTID points to. | |
1973 | ||
1974 | This comes from that fact that there is no explicit notion of | |
1975 | "selected process" in the protocol. The selected process for | |
1976 | general operations is the process the selected general thread | |
1977 | belongs to. */ | |
1978 | ||
1979 | static void | |
1980 | set_general_process (void) | |
1981 | { | |
1982 | struct remote_state *rs = get_remote_state (); | |
1983 | ||
1984 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1985 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1986 | return; |
1987 | ||
1988 | /* We only need to change the remote current thread if it's pointing | |
1989 | at some other process. */ | |
47f8a51d | 1990 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1991 | set_general_thread (inferior_ptid); |
1992 | } | |
1993 | ||
c906108c | 1994 | \f |
7d1a114c PA |
1995 | /* Return nonzero if this is the main thread that we made up ourselves |
1996 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
1997 | |
1998 | static int | |
7d1a114c | 1999 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2000 | { |
6d820c5c | 2001 | struct remote_state *rs = get_remote_state (); |
82f73884 | 2002 | char *p, *endp; |
c906108c | 2003 | |
c0a2216e PA |
2004 | if (ptid_equal (ptid, magic_null_ptid)) |
2005 | /* The main thread is always alive. */ | |
2006 | return 1; | |
2007 | ||
ba348170 | 2008 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2009 | /* The main thread is always alive. This can happen after a |
2010 | vAttach, if the remote side doesn't support | |
2011 | multi-threading. */ | |
2012 | return 1; | |
2013 | ||
7d1a114c PA |
2014 | return 0; |
2015 | } | |
2016 | ||
2017 | /* Return nonzero if the thread PTID is still alive on the remote | |
2018 | system. */ | |
2019 | ||
2020 | static int | |
2021 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2022 | { | |
2023 | struct remote_state *rs = get_remote_state (); | |
2024 | char *p, *endp; | |
2025 | ||
2026 | /* Check if this is a thread that we made up ourselves to model | |
2027 | non-threaded targets as single-threaded. */ | |
2028 | if (remote_thread_always_alive (ops, ptid)) | |
2029 | return 1; | |
2030 | ||
82f73884 PA |
2031 | p = rs->buf; |
2032 | endp = rs->buf + get_remote_packet_size (); | |
2033 | ||
2034 | *p++ = 'T'; | |
2035 | write_ptid (p, endp, ptid); | |
2036 | ||
2e9f7625 | 2037 | putpkt (rs->buf); |
6d820c5c | 2038 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2039 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2040 | } |
2041 | ||
2042 | /* About these extended threadlist and threadinfo packets. They are | |
2043 | variable length packets but, the fields within them are often fixed | |
2044 | length. They are redundent enough to send over UDP as is the | |
2045 | remote protocol in general. There is a matching unit test module | |
2046 | in libstub. */ | |
2047 | ||
23860348 | 2048 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2049 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2050 | changable. */ |
cce74817 JM |
2051 | |
2052 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2053 | Plan to fix this. */ |
cce74817 | 2054 | |
23860348 | 2055 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2056 | |
9d1f7ab2 | 2057 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2058 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2059 | |
2060 | struct gdb_ext_thread_info | |
c5aa993b | 2061 | { |
23860348 | 2062 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2063 | int active; /* Has state interesting to GDB? |
23860348 | 2064 | regs, stack. */ |
2bc416ba | 2065 | char display[256]; /* Brief state display, name, |
cedea757 | 2066 | blocked/suspended. */ |
23860348 | 2067 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2068 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2069 | whatever. */ |
c5aa993b | 2070 | }; |
cce74817 JM |
2071 | |
2072 | /* The volume of remote transfers can be limited by submitting | |
2073 | a mask containing bits specifying the desired information. | |
2074 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2075 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2076 | |
2077 | #define TAG_THREADID 1 | |
2078 | #define TAG_EXISTS 2 | |
2079 | #define TAG_DISPLAY 4 | |
2080 | #define TAG_THREADNAME 8 | |
c5aa993b | 2081 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2082 | |
23860348 | 2083 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2084 | |
a14ed312 | 2085 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2086 | |
a14ed312 | 2087 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2088 | |
a14ed312 | 2089 | static char *pack_int (char *buf, int value); |
cce74817 | 2090 | |
a14ed312 | 2091 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2092 | |
a14ed312 | 2093 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2094 | |
23860348 | 2095 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2096 | |
23860348 | 2097 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2098 | |
23860348 | 2099 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2100 | |
23860348 | 2101 | static int threadref_to_int (threadref *ref); |
cce74817 | 2102 | |
23860348 | 2103 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2104 | |
23860348 | 2105 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2106 | |
2bc416ba | 2107 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2108 | threadref *id); |
cce74817 | 2109 | |
a14ed312 | 2110 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2111 | threadref *expectedref, |
a14ed312 KB |
2112 | struct gdb_ext_thread_info |
2113 | *info); | |
cce74817 JM |
2114 | |
2115 | ||
2bc416ba | 2116 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2117 | int fieldset, /*TAG mask */ |
a14ed312 | 2118 | struct gdb_ext_thread_info *info); |
cce74817 | 2119 | |
a14ed312 KB |
2120 | static char *pack_threadlist_request (char *pkt, int startflag, |
2121 | int threadcount, | |
23860348 | 2122 | threadref *nextthread); |
cce74817 | 2123 | |
a14ed312 KB |
2124 | static int parse_threadlist_response (char *pkt, |
2125 | int result_limit, | |
23860348 | 2126 | threadref *original_echo, |
2bc416ba | 2127 | threadref *resultlist, |
23860348 | 2128 | int *doneflag); |
cce74817 | 2129 | |
a14ed312 | 2130 | static int remote_get_threadlist (int startflag, |
23860348 | 2131 | threadref *nextthread, |
a14ed312 KB |
2132 | int result_limit, |
2133 | int *done, | |
2bc416ba | 2134 | int *result_count, |
23860348 | 2135 | threadref *threadlist); |
cce74817 | 2136 | |
23860348 | 2137 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2138 | |
a14ed312 KB |
2139 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2140 | void *context, int looplimit); | |
cce74817 | 2141 | |
23860348 | 2142 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2143 | |
82f73884 PA |
2144 | |
2145 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2146 | buffer we're allowed to write to. Returns | |
2147 | BUF+CHARACTERS_WRITTEN. */ | |
2148 | ||
2149 | static char * | |
2150 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2151 | { | |
2152 | int pid, tid; | |
2153 | struct remote_state *rs = get_remote_state (); | |
2154 | ||
2155 | if (remote_multi_process_p (rs)) | |
2156 | { | |
2157 | pid = ptid_get_pid (ptid); | |
2158 | if (pid < 0) | |
2159 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2160 | else | |
2161 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2162 | } | |
ba348170 | 2163 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2164 | if (tid < 0) |
2165 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2166 | else | |
2167 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2168 | ||
2169 | return buf; | |
2170 | } | |
2171 | ||
2172 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2173 | passed the last parsed char. Returns null_ptid on error. */ | |
2174 | ||
2175 | static ptid_t | |
2176 | read_ptid (char *buf, char **obuf) | |
2177 | { | |
2178 | char *p = buf; | |
2179 | char *pp; | |
2180 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2181 | |
2182 | if (*p == 'p') | |
2183 | { | |
2184 | /* Multi-process ptid. */ | |
2185 | pp = unpack_varlen_hex (p + 1, &pid); | |
2186 | if (*pp != '.') | |
b37520b6 | 2187 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2188 | |
2189 | p = pp; | |
2190 | pp = unpack_varlen_hex (p + 1, &tid); | |
2191 | if (obuf) | |
2192 | *obuf = pp; | |
ba348170 | 2193 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2194 | } |
2195 | ||
2196 | /* No multi-process. Just a tid. */ | |
2197 | pp = unpack_varlen_hex (p, &tid); | |
2198 | ||
c9f35b34 KB |
2199 | /* Return null_ptid when no thread id is found. */ |
2200 | if (p == pp) | |
2201 | { | |
2202 | if (obuf) | |
2203 | *obuf = pp; | |
2204 | return null_ptid; | |
2205 | } | |
2206 | ||
82f73884 | 2207 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2208 | what's in inferior_ptid, unless it's null at this point. If so, |
2209 | then since there's no way to know the pid of the reported | |
2210 | threads, use the magic number. */ | |
2211 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2212 | pid = ptid_get_pid (magic_null_ptid); | |
2213 | else | |
2214 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2215 | |
2216 | if (obuf) | |
2217 | *obuf = pp; | |
ba348170 | 2218 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2219 | } |
2220 | ||
c906108c | 2221 | static int |
fba45db2 | 2222 | stubhex (int ch) |
c906108c SS |
2223 | { |
2224 | if (ch >= 'a' && ch <= 'f') | |
2225 | return ch - 'a' + 10; | |
2226 | if (ch >= '0' && ch <= '9') | |
2227 | return ch - '0'; | |
2228 | if (ch >= 'A' && ch <= 'F') | |
2229 | return ch - 'A' + 10; | |
2230 | return -1; | |
2231 | } | |
2232 | ||
2233 | static int | |
fba45db2 | 2234 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2235 | { |
2236 | int nibble; | |
2237 | int retval = 0; | |
2238 | ||
2239 | while (fieldlength) | |
2240 | { | |
2241 | nibble = stubhex (*buff++); | |
2242 | retval |= nibble; | |
2243 | fieldlength--; | |
2244 | if (fieldlength) | |
2245 | retval = retval << 4; | |
2246 | } | |
2247 | return retval; | |
2248 | } | |
2249 | ||
c906108c | 2250 | static char * |
fba45db2 | 2251 | unpack_nibble (char *buf, int *val) |
c906108c | 2252 | { |
b7589f7d | 2253 | *val = fromhex (*buf++); |
c906108c SS |
2254 | return buf; |
2255 | } | |
2256 | ||
c906108c | 2257 | static char * |
fba45db2 | 2258 | unpack_byte (char *buf, int *value) |
c906108c SS |
2259 | { |
2260 | *value = stub_unpack_int (buf, 2); | |
2261 | return buf + 2; | |
2262 | } | |
2263 | ||
2264 | static char * | |
fba45db2 | 2265 | pack_int (char *buf, int value) |
c906108c SS |
2266 | { |
2267 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2268 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2269 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2270 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2271 | return buf; | |
2272 | } | |
2273 | ||
2274 | static char * | |
fba45db2 | 2275 | unpack_int (char *buf, int *value) |
c906108c SS |
2276 | { |
2277 | *value = stub_unpack_int (buf, 8); | |
2278 | return buf + 8; | |
2279 | } | |
2280 | ||
23860348 | 2281 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2282 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2283 | |
2284 | static char * | |
fba45db2 | 2285 | pack_string (char *pkt, char *string) |
c906108c SS |
2286 | { |
2287 | char ch; | |
2288 | int len; | |
2289 | ||
2290 | len = strlen (string); | |
2291 | if (len > 200) | |
23860348 | 2292 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2293 | pkt = pack_hex_byte (pkt, len); |
2294 | while (len-- > 0) | |
2295 | { | |
2296 | ch = *string++; | |
2297 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2298 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2299 | *pkt++ = ch; |
2300 | } | |
2301 | return pkt; | |
2302 | } | |
2303 | #endif /* 0 (unused) */ | |
2304 | ||
2305 | static char * | |
fba45db2 | 2306 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2307 | { |
2308 | while (length--) | |
2309 | *dest++ = *src++; | |
2310 | *dest = '\0'; | |
2311 | return src; | |
2312 | } | |
2313 | ||
2314 | static char * | |
fba45db2 | 2315 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2316 | { |
2317 | char *limit; | |
2318 | unsigned char *altid; | |
2319 | ||
2320 | altid = (unsigned char *) id; | |
2321 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2322 | while (pkt < limit) | |
2323 | pkt = pack_hex_byte (pkt, *altid++); | |
2324 | return pkt; | |
2325 | } | |
2326 | ||
2327 | ||
2328 | static char * | |
fba45db2 | 2329 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2330 | { |
2331 | char *altref; | |
2332 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2333 | int x, y; | |
2334 | ||
2335 | altref = (char *) id; | |
2336 | ||
2337 | while (inbuf < limit) | |
2338 | { | |
2339 | x = stubhex (*inbuf++); | |
2340 | y = stubhex (*inbuf++); | |
2341 | *altref++ = (x << 4) | y; | |
2342 | } | |
2343 | return inbuf; | |
2344 | } | |
2345 | ||
2346 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2347 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2348 | to use 64bit thread references internally. This is an adapter |
2349 | function. */ | |
2350 | ||
2351 | void | |
fba45db2 | 2352 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2353 | { |
2354 | unsigned char *scan; | |
2355 | ||
2356 | scan = (unsigned char *) id; | |
2357 | { | |
2358 | int i = 4; | |
2359 | while (i--) | |
2360 | *scan++ = 0; | |
2361 | } | |
2362 | *scan++ = (value >> 24) & 0xff; | |
2363 | *scan++ = (value >> 16) & 0xff; | |
2364 | *scan++ = (value >> 8) & 0xff; | |
2365 | *scan++ = (value & 0xff); | |
2366 | } | |
2367 | ||
2368 | static int | |
fba45db2 | 2369 | threadref_to_int (threadref *ref) |
c906108c SS |
2370 | { |
2371 | int i, value = 0; | |
2372 | unsigned char *scan; | |
2373 | ||
cfd77fa1 | 2374 | scan = *ref; |
c906108c SS |
2375 | scan += 4; |
2376 | i = 4; | |
2377 | while (i-- > 0) | |
2378 | value = (value << 8) | ((*scan++) & 0xff); | |
2379 | return value; | |
2380 | } | |
2381 | ||
2382 | static void | |
fba45db2 | 2383 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2384 | { |
2385 | int i; | |
2386 | unsigned char *csrc, *cdest; | |
2387 | ||
2388 | csrc = (unsigned char *) src; | |
2389 | cdest = (unsigned char *) dest; | |
2390 | i = 8; | |
2391 | while (i--) | |
2392 | *cdest++ = *csrc++; | |
2393 | } | |
2394 | ||
2395 | static int | |
fba45db2 | 2396 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2397 | { |
23860348 | 2398 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2399 | #if 0 |
2400 | unsigned char *srcp, *destp; | |
2401 | int i, result; | |
2402 | srcp = (char *) src; | |
2403 | destp = (char *) dest; | |
2404 | ||
2405 | result = 1; | |
2406 | while (i-- > 0) | |
2407 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2408 | return result; | |
2409 | #endif | |
2410 | return 1; | |
2411 | } | |
2412 | ||
2413 | /* | |
c5aa993b JM |
2414 | threadid:1, # always request threadid |
2415 | context_exists:2, | |
2416 | display:4, | |
2417 | unique_name:8, | |
2418 | more_display:16 | |
2419 | */ | |
c906108c SS |
2420 | |
2421 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2422 | ||
2423 | static char * | |
fba45db2 | 2424 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2425 | { |
23860348 MS |
2426 | *pkt++ = 'q'; /* Info Query */ |
2427 | *pkt++ = 'P'; /* process or thread info */ | |
2428 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2429 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2430 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2431 | return pkt; |
2432 | } | |
2433 | ||
23860348 | 2434 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2435 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2436 | add more fields as time goes by. */ |
c906108c | 2437 | |
23860348 | 2438 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2439 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2440 | fetch registers and its stack? */ |
c5aa993b | 2441 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2442 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2443 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2444 | the process. */ |
c906108c SS |
2445 | |
2446 | static int | |
fba45db2 KB |
2447 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2448 | struct gdb_ext_thread_info *info) | |
c906108c | 2449 | { |
d01949b6 | 2450 | struct remote_state *rs = get_remote_state (); |
c906108c | 2451 | int mask, length; |
cfd77fa1 | 2452 | int tag; |
c906108c | 2453 | threadref ref; |
6d820c5c | 2454 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2455 | int retval = 1; |
2456 | ||
23860348 | 2457 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2458 | info->active = 0; |
2459 | info->display[0] = '\0'; | |
2460 | info->shortname[0] = '\0'; | |
2461 | info->more_display[0] = '\0'; | |
2462 | ||
23860348 MS |
2463 | /* Assume the characters indicating the packet type have been |
2464 | stripped. */ | |
c906108c SS |
2465 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2466 | pkt = unpack_threadid (pkt, &ref); | |
2467 | ||
2468 | if (mask == 0) | |
8a3fe4f8 | 2469 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2470 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2471 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2472 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2473 | return 0; |
2474 | } | |
2475 | copy_threadref (&info->threadid, &ref); | |
2476 | ||
23860348 | 2477 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2478 | |
23860348 MS |
2479 | /* Packets are terminated with nulls. */ |
2480 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2481 | { |
2482 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2483 | pkt = unpack_byte (pkt, &length); /* length */ |
2484 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2485 | { |
8a3fe4f8 | 2486 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2487 | retval = 0; |
2488 | break; | |
2489 | } | |
2490 | if (tag == TAG_THREADID) | |
2491 | { | |
2492 | if (length != 16) | |
2493 | { | |
8a3fe4f8 | 2494 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2495 | retval = 0; |
2496 | break; | |
2497 | } | |
2498 | pkt = unpack_threadid (pkt, &ref); | |
2499 | mask = mask & ~TAG_THREADID; | |
2500 | continue; | |
2501 | } | |
2502 | if (tag == TAG_EXISTS) | |
2503 | { | |
2504 | info->active = stub_unpack_int (pkt, length); | |
2505 | pkt += length; | |
2506 | mask = mask & ~(TAG_EXISTS); | |
2507 | if (length > 8) | |
2508 | { | |
8a3fe4f8 | 2509 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2510 | retval = 0; |
2511 | break; | |
2512 | } | |
2513 | continue; | |
2514 | } | |
2515 | if (tag == TAG_THREADNAME) | |
2516 | { | |
2517 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2518 | mask = mask & ~TAG_THREADNAME; | |
2519 | continue; | |
2520 | } | |
2521 | if (tag == TAG_DISPLAY) | |
2522 | { | |
2523 | pkt = unpack_string (pkt, &info->display[0], length); | |
2524 | mask = mask & ~TAG_DISPLAY; | |
2525 | continue; | |
2526 | } | |
2527 | if (tag == TAG_MOREDISPLAY) | |
2528 | { | |
2529 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2530 | mask = mask & ~TAG_MOREDISPLAY; | |
2531 | continue; | |
2532 | } | |
8a3fe4f8 | 2533 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2534 | break; /* Not a tag we know about. */ |
c906108c SS |
2535 | } |
2536 | return retval; | |
2537 | } | |
2538 | ||
2539 | static int | |
fba45db2 KB |
2540 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2541 | struct gdb_ext_thread_info *info) | |
c906108c | 2542 | { |
d01949b6 | 2543 | struct remote_state *rs = get_remote_state (); |
c906108c | 2544 | int result; |
c906108c | 2545 | |
2e9f7625 DJ |
2546 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2547 | putpkt (rs->buf); | |
6d820c5c | 2548 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2549 | |
2550 | if (rs->buf[0] == '\0') | |
2551 | return 0; | |
2552 | ||
2e9f7625 | 2553 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2554 | threadid, info); |
c906108c SS |
2555 | return result; |
2556 | } | |
2557 | ||
c906108c SS |
2558 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2559 | ||
2560 | static char * | |
fba45db2 KB |
2561 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2562 | threadref *nextthread) | |
c906108c SS |
2563 | { |
2564 | *pkt++ = 'q'; /* info query packet */ | |
2565 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2566 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2567 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2568 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2569 | *pkt = '\0'; | |
2570 | return pkt; | |
2571 | } | |
2572 | ||
2573 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2574 | ||
2575 | static int | |
fba45db2 KB |
2576 | parse_threadlist_response (char *pkt, int result_limit, |
2577 | threadref *original_echo, threadref *resultlist, | |
2578 | int *doneflag) | |
c906108c | 2579 | { |
d01949b6 | 2580 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2581 | char *limit; |
2582 | int count, resultcount, done; | |
2583 | ||
2584 | resultcount = 0; | |
2585 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2586 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2587 | /* done parse past here */ |
c906108c SS |
2588 | pkt = unpack_byte (pkt, &count); /* count field */ |
2589 | pkt = unpack_nibble (pkt, &done); | |
2590 | /* The first threadid is the argument threadid. */ | |
2591 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2592 | while ((count-- > 0) && (pkt < limit)) | |
2593 | { | |
2594 | pkt = unpack_threadid (pkt, resultlist++); | |
2595 | if (resultcount++ >= result_limit) | |
2596 | break; | |
2597 | } | |
2598 | if (doneflag) | |
2599 | *doneflag = done; | |
2600 | return resultcount; | |
2601 | } | |
2602 | ||
6dc54d91 PA |
2603 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2604 | qL packet is not supported, 0 on error and 1 on success. */ | |
2605 | ||
c906108c | 2606 | static int |
fba45db2 KB |
2607 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2608 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2609 | { |
d01949b6 | 2610 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2611 | int result = 1; |
2612 | ||
23860348 | 2613 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2614 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2615 | >= get_remote_packet_size ()) | |
ea9c271d | 2616 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2617 | |
6d820c5c DJ |
2618 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2619 | putpkt (rs->buf); | |
2620 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2621 | if (*rs->buf == '\0') |
6dc54d91 PA |
2622 | { |
2623 | /* Packet not supported. */ | |
2624 | return -1; | |
2625 | } | |
2626 | ||
2627 | *result_count = | |
2628 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2629 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2630 | |
0d031856 | 2631 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2632 | { |
23860348 MS |
2633 | /* FIXME: This is a good reason to drop the packet. */ |
2634 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2635 | /* Possabilities : |
2636 | retransmit immediatly - race conditions | |
2637 | retransmit after timeout - yes | |
2638 | exit | |
2639 | wait for packet, then exit | |
2640 | */ | |
8a3fe4f8 | 2641 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2642 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2643 | } |
2644 | if (*result_count <= 0) | |
2645 | { | |
2646 | if (*done != 1) | |
2647 | { | |
8a3fe4f8 | 2648 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2649 | result = 0; |
2650 | } | |
2651 | return result; /* break; */ | |
2652 | } | |
2653 | if (*result_count > result_limit) | |
2654 | { | |
2655 | *result_count = 0; | |
8a3fe4f8 | 2656 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2657 | return 0; |
2658 | } | |
2659 | return result; | |
2660 | } | |
2661 | ||
6dc54d91 PA |
2662 | /* Fetch the list of remote threads, with the qL packet, and call |
2663 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2664 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2665 | STEPFUNCTION returns false. If the packet is not supported, | |
2666 | returns -1. */ | |
c906108c | 2667 | |
c906108c | 2668 | static int |
fba45db2 KB |
2669 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2670 | int looplimit) | |
c906108c | 2671 | { |
0d031856 | 2672 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2673 | int done, i, result_count; |
2674 | int startflag = 1; | |
2675 | int result = 1; | |
2676 | int loopcount = 0; | |
c906108c SS |
2677 | |
2678 | done = 0; | |
2679 | while (!done) | |
2680 | { | |
2681 | if (loopcount++ > looplimit) | |
2682 | { | |
2683 | result = 0; | |
8a3fe4f8 | 2684 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2685 | break; |
2686 | } | |
6dc54d91 PA |
2687 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2688 | MAXTHREADLISTRESULTS, | |
2689 | &done, &result_count, | |
2690 | rs->resultthreadlist); | |
2691 | if (result <= 0) | |
2692 | break; | |
23860348 | 2693 | /* Clear for later iterations. */ |
c906108c SS |
2694 | startflag = 0; |
2695 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2696 | if (result_count >= 1) | |
0d031856 TT |
2697 | copy_threadref (&rs->nextthread, |
2698 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2699 | i = 0; |
2700 | while (result_count--) | |
6dc54d91 PA |
2701 | { |
2702 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2703 | { | |
2704 | result = 0; | |
2705 | break; | |
2706 | } | |
2707 | } | |
c906108c SS |
2708 | } |
2709 | return result; | |
2710 | } | |
2711 | ||
6dc54d91 PA |
2712 | /* A thread found on the remote target. */ |
2713 | ||
2714 | typedef struct thread_item | |
2715 | { | |
2716 | /* The thread's PTID. */ | |
2717 | ptid_t ptid; | |
2718 | ||
2719 | /* The thread's extra info. May be NULL. */ | |
2720 | char *extra; | |
2721 | ||
2722 | /* The core the thread was running on. -1 if not known. */ | |
2723 | int core; | |
2724 | } thread_item_t; | |
2725 | DEF_VEC_O(thread_item_t); | |
2726 | ||
2727 | /* Context passed around to the various methods listing remote | |
2728 | threads. As new threads are found, they're added to the ITEMS | |
2729 | vector. */ | |
2730 | ||
2731 | struct threads_listing_context | |
2732 | { | |
2733 | /* The threads found on the remote target. */ | |
2734 | VEC (thread_item_t) *items; | |
2735 | }; | |
2736 | ||
80134cf5 PA |
2737 | /* Discard the contents of the constructed thread listing context. */ |
2738 | ||
2739 | static void | |
2740 | clear_threads_listing_context (void *p) | |
2741 | { | |
2742 | struct threads_listing_context *context = p; | |
2743 | int i; | |
2744 | struct thread_item *item; | |
2745 | ||
2746 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2747 | xfree (item->extra); | |
2748 | ||
2749 | VEC_free (thread_item_t, context->items); | |
2750 | } | |
2751 | ||
cbb8991c DB |
2752 | /* Remove the thread specified as the related_pid field of WS |
2753 | from the CONTEXT list. */ | |
2754 | ||
2755 | static void | |
2756 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2757 | struct threads_listing_context *context) | |
2758 | { | |
2759 | struct thread_item *item; | |
2760 | int i; | |
2761 | ptid_t child_ptid = ws->value.related_pid; | |
2762 | ||
2763 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2764 | { | |
2765 | if (ptid_equal (item->ptid, child_ptid)) | |
2766 | { | |
2767 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2768 | break; | |
2769 | } | |
2770 | } | |
2771 | } | |
2772 | ||
c906108c | 2773 | static int |
6dc54d91 | 2774 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2775 | { |
6dc54d91 PA |
2776 | struct threads_listing_context *context = data; |
2777 | struct thread_item item; | |
79d7f229 | 2778 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2779 | |
6dc54d91 PA |
2780 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2781 | item.core = -1; | |
2782 | item.extra = NULL; | |
2783 | ||
2784 | VEC_safe_push (thread_item_t, context->items, &item); | |
2785 | ||
c906108c SS |
2786 | return 1; /* continue iterator */ |
2787 | } | |
2788 | ||
2789 | #define CRAZY_MAX_THREADS 1000 | |
2790 | ||
39f77062 KB |
2791 | static ptid_t |
2792 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2793 | { |
d01949b6 | 2794 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2795 | |
2796 | putpkt ("qC"); | |
6d820c5c | 2797 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2798 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2799 | { |
2800 | char *obuf; | |
2801 | ptid_t result; | |
2802 | ||
2803 | result = read_ptid (&rs->buf[2], &obuf); | |
2804 | if (*obuf != '\0' && remote_debug) | |
2805 | fprintf_unfiltered (gdb_stdlog, | |
2806 | "warning: garbage in qC reply\n"); | |
2807 | ||
2808 | return result; | |
2809 | } | |
c906108c SS |
2810 | else |
2811 | return oldpid; | |
2812 | } | |
2813 | ||
6dc54d91 | 2814 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2815 | |
6dc54d91 PA |
2816 | static int |
2817 | remote_get_threads_with_ql (struct target_ops *ops, | |
2818 | struct threads_listing_context *context) | |
c906108c | 2819 | { |
6dc54d91 PA |
2820 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2821 | CRAZY_MAX_THREADS) >= 0) | |
2822 | return 1; | |
2823 | ||
2824 | return 0; | |
c906108c SS |
2825 | } |
2826 | ||
dc146f7c VP |
2827 | #if defined(HAVE_LIBEXPAT) |
2828 | ||
dc146f7c VP |
2829 | static void |
2830 | start_thread (struct gdb_xml_parser *parser, | |
2831 | const struct gdb_xml_element *element, | |
2832 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2833 | { | |
6dc54d91 | 2834 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2835 | |
2836 | struct thread_item item; | |
2837 | char *id; | |
3d2c1d41 | 2838 | struct gdb_xml_value *attr; |
dc146f7c | 2839 | |
3d2c1d41 | 2840 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2841 | item.ptid = read_ptid (id, NULL); |
2842 | ||
3d2c1d41 PA |
2843 | attr = xml_find_attribute (attributes, "core"); |
2844 | if (attr != NULL) | |
2845 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2846 | else |
2847 | item.core = -1; | |
2848 | ||
2849 | item.extra = 0; | |
2850 | ||
2851 | VEC_safe_push (thread_item_t, data->items, &item); | |
2852 | } | |
2853 | ||
2854 | static void | |
2855 | end_thread (struct gdb_xml_parser *parser, | |
2856 | const struct gdb_xml_element *element, | |
2857 | void *user_data, const char *body_text) | |
2858 | { | |
6dc54d91 | 2859 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2860 | |
2861 | if (body_text && *body_text) | |
2ae2a0b7 | 2862 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2863 | } |
2864 | ||
2865 | const struct gdb_xml_attribute thread_attributes[] = { | |
2866 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2867 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2868 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2869 | }; | |
2870 | ||
2871 | const struct gdb_xml_element thread_children[] = { | |
2872 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2873 | }; | |
2874 | ||
2875 | const struct gdb_xml_element threads_children[] = { | |
2876 | { "thread", thread_attributes, thread_children, | |
2877 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2878 | start_thread, end_thread }, | |
2879 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2880 | }; | |
2881 | ||
2882 | const struct gdb_xml_element threads_elements[] = { | |
2883 | { "threads", NULL, threads_children, | |
2884 | GDB_XML_EF_NONE, NULL, NULL }, | |
2885 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2886 | }; | |
2887 | ||
2888 | #endif | |
2889 | ||
6dc54d91 | 2890 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2891 | |
6dc54d91 PA |
2892 | static int |
2893 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2894 | struct threads_listing_context *context) | |
0f71a2f6 | 2895 | { |
dc146f7c | 2896 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2897 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2898 | { |
6dc54d91 | 2899 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2900 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2901 | |
6dc54d91 | 2902 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2903 | { |
6dc54d91 PA |
2904 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2905 | threads_elements, xml, context); | |
dc146f7c VP |
2906 | } |
2907 | ||
2908 | do_cleanups (back_to); | |
6dc54d91 | 2909 | return 1; |
dc146f7c VP |
2910 | } |
2911 | #endif | |
2912 | ||
6dc54d91 PA |
2913 | return 0; |
2914 | } | |
2915 | ||
2916 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2917 | ||
2918 | static int | |
2919 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2920 | struct threads_listing_context *context) | |
2921 | { | |
2922 | struct remote_state *rs = get_remote_state (); | |
2923 | ||
b80fafe3 | 2924 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2925 | { |
6dc54d91 PA |
2926 | char *bufp; |
2927 | ||
9d1f7ab2 | 2928 | putpkt ("qfThreadInfo"); |
6d820c5c | 2929 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2930 | bufp = rs->buf; |
9d1f7ab2 | 2931 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2932 | { |
9d1f7ab2 MS |
2933 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2934 | { | |
2935 | do | |
2936 | { | |
6dc54d91 PA |
2937 | struct thread_item item; |
2938 | ||
2939 | item.ptid = read_ptid (bufp, &bufp); | |
2940 | item.core = -1; | |
2941 | item.extra = NULL; | |
2942 | ||
2943 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
2944 | } |
2945 | while (*bufp++ == ','); /* comma-separated list */ | |
2946 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2947 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 2948 | bufp = rs->buf; |
9d1f7ab2 | 2949 | } |
6dc54d91 PA |
2950 | return 1; |
2951 | } | |
2952 | else | |
2953 | { | |
2954 | /* Packet not recognized. */ | |
2955 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
2956 | } |
2957 | } | |
2958 | ||
6dc54d91 PA |
2959 | return 0; |
2960 | } | |
2961 | ||
e8032dde | 2962 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
2963 | targets. */ |
2964 | ||
2965 | static void | |
e8032dde | 2966 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
2967 | { |
2968 | struct remote_state *rs = get_remote_state (); | |
2969 | struct threads_listing_context context; | |
2970 | struct cleanup *old_chain; | |
ab970af1 | 2971 | int got_list = 0; |
e8032dde | 2972 | |
6dc54d91 PA |
2973 | context.items = NULL; |
2974 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2975 | ||
2976 | /* We have a few different mechanisms to fetch the thread list. Try | |
2977 | them all, starting with the most preferred one first, falling | |
2978 | back to older methods. */ | |
2979 | if (remote_get_threads_with_qxfer (ops, &context) | |
2980 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2981 | || remote_get_threads_with_ql (ops, &context)) | |
2982 | { | |
2983 | int i; | |
2984 | struct thread_item *item; | |
ab970af1 PA |
2985 | struct thread_info *tp, *tmp; |
2986 | ||
2987 | got_list = 1; | |
2988 | ||
7d1a114c PA |
2989 | if (VEC_empty (thread_item_t, context.items) |
2990 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2991 | { | |
2992 | /* Some targets don't really support threads, but still | |
2993 | reply an (empty) thread list in response to the thread | |
2994 | listing packets, instead of replying "packet not | |
2995 | supported". Exit early so we don't delete the main | |
2996 | thread. */ | |
2997 | do_cleanups (old_chain); | |
2998 | return; | |
2999 | } | |
3000 | ||
ab970af1 PA |
3001 | /* CONTEXT now holds the current thread list on the remote |
3002 | target end. Delete GDB-side threads no longer found on the | |
3003 | target. */ | |
8a06aea7 | 3004 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3005 | { |
ab970af1 PA |
3006 | for (i = 0; |
3007 | VEC_iterate (thread_item_t, context.items, i, item); | |
3008 | ++i) | |
3009 | { | |
3010 | if (ptid_equal (item->ptid, tp->ptid)) | |
3011 | break; | |
3012 | } | |
3013 | ||
3014 | if (i == VEC_length (thread_item_t, context.items)) | |
3015 | { | |
3016 | /* Not found. */ | |
3017 | delete_thread (tp->ptid); | |
3018 | } | |
cbb8991c DB |
3019 | } |
3020 | ||
3021 | /* Remove any unreported fork child threads from CONTEXT so | |
3022 | that we don't interfere with follow fork, which is where | |
3023 | creation of such threads is handled. */ | |
3024 | remove_new_fork_children (&context); | |
74531fed | 3025 | |
ab970af1 | 3026 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3027 | for (i = 0; |
3028 | VEC_iterate (thread_item_t, context.items, i, item); | |
3029 | ++i) | |
3030 | { | |
3031 | if (!ptid_equal (item->ptid, null_ptid)) | |
3032 | { | |
3033 | struct private_thread_info *info; | |
3034 | /* In non-stop mode, we assume new found threads are | |
3035 | running until proven otherwise with a stop reply. In | |
3036 | all-stop, we can only get here if all threads are | |
3037 | stopped. */ | |
3038 | int running = non_stop ? 1 : 0; | |
3039 | ||
3040 | remote_notice_new_inferior (item->ptid, running); | |
3041 | ||
3042 | info = demand_private_info (item->ptid); | |
3043 | info->core = item->core; | |
3044 | info->extra = item->extra; | |
3045 | item->extra = NULL; | |
3046 | } | |
3047 | } | |
3048 | } | |
3049 | ||
ab970af1 PA |
3050 | if (!got_list) |
3051 | { | |
3052 | /* If no thread listing method is supported, then query whether | |
3053 | each known thread is alive, one by one, with the T packet. | |
3054 | If the target doesn't support threads at all, then this is a | |
3055 | no-op. See remote_thread_alive. */ | |
3056 | prune_threads (); | |
3057 | } | |
3058 | ||
6dc54d91 | 3059 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3060 | } |
3061 | ||
802188a7 | 3062 | /* |
9d1f7ab2 MS |
3063 | * Collect a descriptive string about the given thread. |
3064 | * The target may say anything it wants to about the thread | |
3065 | * (typically info about its blocked / runnable state, name, etc.). | |
3066 | * This string will appear in the info threads display. | |
802188a7 | 3067 | * |
9d1f7ab2 MS |
3068 | * Optional: targets are not required to implement this function. |
3069 | */ | |
3070 | ||
3071 | static char * | |
c15906d8 | 3072 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3073 | { |
d01949b6 | 3074 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3075 | int result; |
3076 | int set; | |
3077 | threadref id; | |
3078 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3079 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3080 | int n = 0; /* position in display_buf */ |
3081 | ||
5d93a237 | 3082 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3083 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3084 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3085 | |
60e569b9 | 3086 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3087 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3088 | /* This is the main thread which was added by GDB. The remote |
3089 | server doesn't know about it. */ | |
3090 | return NULL; | |
3091 | ||
4082afcc | 3092 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3093 | { |
3094 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3095 | |
fe978cb0 PA |
3096 | if (info && info->priv) |
3097 | return info->priv->extra; | |
dc146f7c VP |
3098 | else |
3099 | return NULL; | |
3100 | } | |
3101 | ||
b80fafe3 | 3102 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3103 | { |
82f73884 PA |
3104 | char *b = rs->buf; |
3105 | char *endb = rs->buf + get_remote_packet_size (); | |
3106 | ||
3107 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3108 | b += strlen (b); | |
3109 | write_ptid (b, endb, tp->ptid); | |
3110 | ||
2e9f7625 | 3111 | putpkt (rs->buf); |
6d820c5c | 3112 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3113 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3114 | { |
2e9f7625 DJ |
3115 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3116 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3117 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3118 | return display_buf; |
3119 | } | |
0f71a2f6 | 3120 | } |
9d1f7ab2 MS |
3121 | |
3122 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3123 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3124 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3125 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3126 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3127 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3128 | if (threadinfo.active) | |
0f71a2f6 | 3129 | { |
9d1f7ab2 | 3130 | if (*threadinfo.shortname) |
2bc416ba | 3131 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3132 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3133 | if (*threadinfo.display) |
2bc416ba | 3134 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3135 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3136 | if (*threadinfo.more_display) |
2bc416ba | 3137 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3138 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3139 | |
3140 | if (n > 0) | |
c5aa993b | 3141 | { |
23860348 | 3142 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3143 | if (',' == display_buf[n-1]) |
3144 | display_buf[n-1] = ' '; | |
3145 | return display_buf; | |
c5aa993b | 3146 | } |
0f71a2f6 | 3147 | } |
9d1f7ab2 | 3148 | return NULL; |
0f71a2f6 | 3149 | } |
c906108c | 3150 | \f |
c5aa993b | 3151 | |
0fb4aa4b | 3152 | static int |
61fc905d | 3153 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3154 | struct static_tracepoint_marker *marker) |
3155 | { | |
3156 | struct remote_state *rs = get_remote_state (); | |
3157 | char *p = rs->buf; | |
3158 | ||
bba74b36 | 3159 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3160 | p += strlen (p); |
3161 | p += hexnumstr (p, addr); | |
3162 | putpkt (rs->buf); | |
3163 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3164 | p = rs->buf; | |
3165 | ||
3166 | if (*p == 'E') | |
3167 | error (_("Remote failure reply: %s"), p); | |
3168 | ||
3169 | if (*p++ == 'm') | |
3170 | { | |
3171 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3172 | return 1; | |
3173 | } | |
3174 | ||
3175 | return 0; | |
3176 | } | |
3177 | ||
0fb4aa4b | 3178 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3179 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3180 | const char *strid) | |
0fb4aa4b PA |
3181 | { |
3182 | struct remote_state *rs = get_remote_state (); | |
3183 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3184 | struct static_tracepoint_marker *marker = NULL; | |
3185 | struct cleanup *old_chain; | |
3186 | char *p; | |
3187 | ||
3188 | /* Ask for a first packet of static tracepoint marker | |
3189 | definition. */ | |
3190 | putpkt ("qTfSTM"); | |
3191 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3192 | p = rs->buf; | |
3193 | if (*p == 'E') | |
3194 | error (_("Remote failure reply: %s"), p); | |
3195 | ||
3196 | old_chain = make_cleanup (free_current_marker, &marker); | |
3197 | ||
3198 | while (*p++ == 'm') | |
3199 | { | |
3200 | if (marker == NULL) | |
3201 | marker = XCNEW (struct static_tracepoint_marker); | |
3202 | ||
3203 | do | |
3204 | { | |
3205 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3206 | ||
3207 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3208 | { | |
3209 | VEC_safe_push (static_tracepoint_marker_p, | |
3210 | markers, marker); | |
3211 | marker = NULL; | |
3212 | } | |
3213 | else | |
3214 | { | |
3215 | release_static_tracepoint_marker (marker); | |
3216 | memset (marker, 0, sizeof (*marker)); | |
3217 | } | |
3218 | } | |
3219 | while (*p++ == ','); /* comma-separated list */ | |
3220 | /* Ask for another packet of static tracepoint definition. */ | |
3221 | putpkt ("qTsSTM"); | |
3222 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3223 | p = rs->buf; | |
3224 | } | |
3225 | ||
3226 | do_cleanups (old_chain); | |
3227 | return markers; | |
3228 | } | |
3229 | ||
3230 | \f | |
10760264 JB |
3231 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3232 | ||
3233 | static ptid_t | |
1e6b91a4 | 3234 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3235 | { |
ba348170 | 3236 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3237 | } |
3238 | \f | |
3239 | ||
24b06219 | 3240 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3241 | |
3242 | static void | |
fba45db2 | 3243 | extended_remote_restart (void) |
c906108c | 3244 | { |
d01949b6 | 3245 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3246 | |
3247 | /* Send the restart command; for reasons I don't understand the | |
3248 | remote side really expects a number after the "R". */ | |
ea9c271d | 3249 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3250 | putpkt (rs->buf); |
c906108c | 3251 | |
ad9a8f3f | 3252 | remote_fileio_reset (); |
c906108c SS |
3253 | } |
3254 | \f | |
3255 | /* Clean up connection to a remote debugger. */ | |
3256 | ||
c906108c | 3257 | static void |
de90e03d | 3258 | remote_close (struct target_ops *self) |
c906108c | 3259 | { |
5d93a237 TT |
3260 | struct remote_state *rs = get_remote_state (); |
3261 | ||
3262 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3263 | return; /* already closed */ |
3264 | ||
3265 | /* Make sure we leave stdin registered in the event loop, and we | |
3266 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3267 | remote_terminal_ours (self); |
ce5ce7ed | 3268 | |
5d93a237 TT |
3269 | serial_close (rs->remote_desc); |
3270 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3271 | |
3272 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3273 | of all the inferiors and their threads we were controlling. |
3274 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3275 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3276 | inferior_ptid = null_ptid; |
f67fd822 | 3277 | discard_all_inferiors (); |
ce5ce7ed | 3278 | |
f48ff2a7 YQ |
3279 | /* We are closing the remote target, so we should discard |
3280 | everything of this target. */ | |
bcc75809 | 3281 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3282 | |
3283 | if (remote_async_inferior_event_token) | |
3284 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3285 | |
5965e028 | 3286 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3287 | |
3288 | trace_reset_local_state (); | |
c906108c SS |
3289 | } |
3290 | ||
23860348 | 3291 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3292 | |
3293 | static void | |
fba45db2 | 3294 | get_offsets (void) |
c906108c | 3295 | { |
d01949b6 | 3296 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3297 | char *buf; |
085dd6e6 | 3298 | char *ptr; |
31d99776 DJ |
3299 | int lose, num_segments = 0, do_sections, do_segments; |
3300 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3301 | struct section_offsets *offs; |
31d99776 DJ |
3302 | struct symfile_segment_data *data; |
3303 | ||
3304 | if (symfile_objfile == NULL) | |
3305 | return; | |
c906108c SS |
3306 | |
3307 | putpkt ("qOffsets"); | |
6d820c5c | 3308 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3309 | buf = rs->buf; |
c906108c SS |
3310 | |
3311 | if (buf[0] == '\000') | |
3312 | return; /* Return silently. Stub doesn't support | |
23860348 | 3313 | this command. */ |
c906108c SS |
3314 | if (buf[0] == 'E') |
3315 | { | |
8a3fe4f8 | 3316 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3317 | return; |
3318 | } | |
3319 | ||
3320 | /* Pick up each field in turn. This used to be done with scanf, but | |
3321 | scanf will make trouble if CORE_ADDR size doesn't match | |
3322 | conversion directives correctly. The following code will work | |
3323 | with any size of CORE_ADDR. */ | |
3324 | text_addr = data_addr = bss_addr = 0; | |
3325 | ptr = buf; | |
3326 | lose = 0; | |
3327 | ||
61012eef | 3328 | if (startswith (ptr, "Text=")) |
c906108c SS |
3329 | { |
3330 | ptr += 5; | |
3331 | /* Don't use strtol, could lose on big values. */ | |
3332 | while (*ptr && *ptr != ';') | |
3333 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3334 | |
61012eef | 3335 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3336 | { |
3337 | ptr += 6; | |
3338 | while (*ptr && *ptr != ';') | |
3339 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3340 | } | |
3341 | else | |
3342 | lose = 1; | |
3343 | ||
61012eef | 3344 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3345 | { |
3346 | ptr += 5; | |
3347 | while (*ptr && *ptr != ';') | |
3348 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3349 | |
31d99776 DJ |
3350 | if (bss_addr != data_addr) |
3351 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3352 | } | |
3353 | else | |
3354 | lose = 1; | |
3355 | } | |
61012eef | 3356 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3357 | { |
31d99776 DJ |
3358 | ptr += 8; |
3359 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3360 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3361 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3362 | num_segments = 1; | |
3363 | ||
61012eef | 3364 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3365 | { |
3366 | ptr += 9; | |
3367 | while (*ptr && *ptr != ';') | |
3368 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3369 | num_segments++; | |
3370 | } | |
c906108c SS |
3371 | } |
3372 | else | |
3373 | lose = 1; | |
3374 | ||
3375 | if (lose) | |
8a3fe4f8 | 3376 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3377 | else if (*ptr != '\0') |
3378 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3379 | |
802188a7 | 3380 | offs = ((struct section_offsets *) |
a39a16c4 | 3381 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3382 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3383 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3384 | |
31d99776 DJ |
3385 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3386 | do_segments = (data != NULL); | |
3387 | do_sections = num_segments == 0; | |
c906108c | 3388 | |
28c32713 | 3389 | if (num_segments > 0) |
31d99776 | 3390 | { |
31d99776 DJ |
3391 | segments[0] = text_addr; |
3392 | segments[1] = data_addr; | |
3393 | } | |
28c32713 JB |
3394 | /* If we have two segments, we can still try to relocate everything |
3395 | by assuming that the .text and .data offsets apply to the whole | |
3396 | text and data segments. Convert the offsets given in the packet | |
3397 | to base addresses for symfile_map_offsets_to_segments. */ | |
3398 | else if (data && data->num_segments == 2) | |
3399 | { | |
3400 | segments[0] = data->segment_bases[0] + text_addr; | |
3401 | segments[1] = data->segment_bases[1] + data_addr; | |
3402 | num_segments = 2; | |
3403 | } | |
8d385431 DJ |
3404 | /* If the object file has only one segment, assume that it is text |
3405 | rather than data; main programs with no writable data are rare, | |
3406 | but programs with no code are useless. Of course the code might | |
3407 | have ended up in the data segment... to detect that we would need | |
3408 | the permissions here. */ | |
3409 | else if (data && data->num_segments == 1) | |
3410 | { | |
3411 | segments[0] = data->segment_bases[0] + text_addr; | |
3412 | num_segments = 1; | |
3413 | } | |
28c32713 JB |
3414 | /* There's no way to relocate by segment. */ |
3415 | else | |
3416 | do_segments = 0; | |
31d99776 DJ |
3417 | |
3418 | if (do_segments) | |
3419 | { | |
3420 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3421 | offs, num_segments, segments); | |
3422 | ||
3423 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3424 | error (_("Can not handle qOffsets TextSeg " |
3425 | "response with this symbol file")); | |
31d99776 DJ |
3426 | |
3427 | if (ret > 0) | |
3428 | do_sections = 0; | |
3429 | } | |
c906108c | 3430 | |
9ef895d6 DJ |
3431 | if (data) |
3432 | free_symfile_segment_data (data); | |
31d99776 DJ |
3433 | |
3434 | if (do_sections) | |
3435 | { | |
3436 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3437 | ||
3e43a32a MS |
3438 | /* This is a temporary kludge to force data and bss to use the |
3439 | same offsets because that's what nlmconv does now. The real | |
3440 | solution requires changes to the stub and remote.c that I | |
3441 | don't have time to do right now. */ | |
31d99776 DJ |
3442 | |
3443 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3444 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3445 | } | |
c906108c SS |
3446 | |
3447 | objfile_relocate (symfile_objfile, offs); | |
3448 | } | |
3449 | ||
9a7071a8 JB |
3450 | /* Send interrupt_sequence to remote target. */ |
3451 | static void | |
eeae04df | 3452 | send_interrupt_sequence (void) |
9a7071a8 | 3453 | { |
5d93a237 TT |
3454 | struct remote_state *rs = get_remote_state (); |
3455 | ||
9a7071a8 | 3456 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3457 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3458 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3459 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3460 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3461 | { | |
5d93a237 | 3462 | serial_send_break (rs->remote_desc); |
c33e31fd | 3463 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3464 | } |
3465 | else | |
3466 | internal_error (__FILE__, __LINE__, | |
3467 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3468 | interrupt_sequence_mode); | |
3469 | } | |
3470 | ||
3405876a PA |
3471 | |
3472 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3473 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3474 | ||
3475 | static ptid_t | |
3476 | stop_reply_extract_thread (char *stop_reply) | |
3477 | { | |
3478 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3479 | { | |
3480 | char *p; | |
3481 | ||
3482 | /* Txx r:val ; r:val (...) */ | |
3483 | p = &stop_reply[3]; | |
3484 | ||
3485 | /* Look for "register" named "thread". */ | |
3486 | while (*p != '\0') | |
3487 | { | |
3488 | char *p1; | |
3489 | ||
3490 | p1 = strchr (p, ':'); | |
3491 | if (p1 == NULL) | |
3492 | return null_ptid; | |
3493 | ||
3494 | if (strncmp (p, "thread", p1 - p) == 0) | |
3495 | return read_ptid (++p1, &p); | |
3496 | ||
3497 | p1 = strchr (p, ';'); | |
3498 | if (p1 == NULL) | |
3499 | return null_ptid; | |
3500 | p1++; | |
3501 | ||
3502 | p = p1; | |
3503 | } | |
3504 | } | |
3505 | ||
3506 | return null_ptid; | |
3507 | } | |
3508 | ||
b7ea362b PA |
3509 | /* Determine the remote side's current thread. If we have a stop |
3510 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3511 | "thread" register we can extract the current thread from. If not, | |
3512 | ask the remote which is the current thread with qC. The former | |
3513 | method avoids a roundtrip. */ | |
3514 | ||
3515 | static ptid_t | |
3516 | get_current_thread (char *wait_status) | |
3517 | { | |
6a49a997 | 3518 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3519 | |
3520 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3521 | the target architecture, which we haven't yet fully determined at | |
3522 | this point. */ | |
3523 | if (wait_status != NULL) | |
3524 | ptid = stop_reply_extract_thread (wait_status); | |
3525 | if (ptid_equal (ptid, null_ptid)) | |
3526 | ptid = remote_current_thread (inferior_ptid); | |
3527 | ||
3528 | return ptid; | |
3529 | } | |
3530 | ||
49c62f2e PA |
3531 | /* Query the remote target for which is the current thread/process, |
3532 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3533 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3534 | to return the current thread. |
3535 | ||
3536 | This function is called after handling the '?' or 'vRun' packets, | |
3537 | whose response is a stop reply from which we can also try | |
3538 | extracting the thread. If the target doesn't support the explicit | |
3539 | qC query, we infer the current thread from that stop reply, passed | |
3540 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3541 | |
3542 | static void | |
3405876a | 3543 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3544 | { |
3545 | struct remote_state *rs = get_remote_state (); | |
3546 | int fake_pid_p = 0; | |
6a49a997 | 3547 | ptid_t ptid; |
49c62f2e PA |
3548 | |
3549 | inferior_ptid = null_ptid; | |
3550 | ||
b7ea362b PA |
3551 | /* Now, if we have thread information, update inferior_ptid. */ |
3552 | ptid = get_current_thread (wait_status); | |
3405876a | 3553 | |
49c62f2e PA |
3554 | if (!ptid_equal (ptid, null_ptid)) |
3555 | { | |
3556 | if (!remote_multi_process_p (rs)) | |
3557 | fake_pid_p = 1; | |
3558 | ||
3559 | inferior_ptid = ptid; | |
3560 | } | |
3561 | else | |
3562 | { | |
3563 | /* Without this, some commands which require an active target | |
3564 | (such as kill) won't work. This variable serves (at least) | |
3565 | double duty as both the pid of the target process (if it has | |
3566 | such), and as a flag indicating that a target is active. */ | |
3567 | inferior_ptid = magic_null_ptid; | |
3568 | fake_pid_p = 1; | |
3569 | } | |
3570 | ||
1b6e6f5c | 3571 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3572 | |
3573 | /* Add the main thread. */ | |
3574 | add_thread_silent (inferior_ptid); | |
3575 | } | |
3576 | ||
221e1a37 PA |
3577 | /* Process all initial stop replies the remote side sent in response |
3578 | to the ? packet. These indicate threads that were already stopped | |
3579 | on initial connection. We mark these threads as stopped and print | |
3580 | their current frame before giving the user the prompt. */ | |
3581 | ||
3582 | static void | |
3583 | process_initial_stop_replies (void) | |
3584 | { | |
3585 | int pending_stop_replies = stop_reply_queue_length (); | |
3586 | ||
3587 | /* Consume the initial pending events. */ | |
3588 | while (pending_stop_replies-- > 0) | |
3589 | { | |
3590 | ptid_t waiton_ptid = minus_one_ptid; | |
3591 | ptid_t event_ptid; | |
3592 | struct target_waitstatus ws; | |
3593 | int ignore_event = 0; | |
3594 | ||
3595 | memset (&ws, 0, sizeof (ws)); | |
3596 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3597 | if (remote_debug) | |
3598 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3599 | ||
3600 | switch (ws.kind) | |
3601 | { | |
3602 | case TARGET_WAITKIND_IGNORE: | |
3603 | case TARGET_WAITKIND_NO_RESUMED: | |
3604 | case TARGET_WAITKIND_SIGNALLED: | |
3605 | case TARGET_WAITKIND_EXITED: | |
3606 | /* We shouldn't see these, but if we do, just ignore. */ | |
3607 | if (remote_debug) | |
3608 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3609 | ignore_event = 1; | |
3610 | break; | |
3611 | ||
3612 | case TARGET_WAITKIND_EXECD: | |
3613 | xfree (ws.value.execd_pathname); | |
3614 | break; | |
3615 | default: | |
3616 | break; | |
3617 | } | |
3618 | ||
3619 | if (ignore_event) | |
3620 | continue; | |
3621 | ||
3622 | switch_to_thread (event_ptid); | |
3623 | set_executing (event_ptid, 0); | |
3624 | set_running (event_ptid, 0); | |
3625 | ||
3626 | stop_pc = get_frame_pc (get_current_frame ()); | |
3627 | set_current_sal_from_frame (get_current_frame ()); | |
3628 | ||
3629 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3630 | { | |
3631 | enum gdb_signal sig = ws.value.sig; | |
3632 | ||
3633 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3634 | instead of signal 0. Suppress it. */ | |
3635 | if (sig == GDB_SIGNAL_TRAP) | |
3636 | sig = GDB_SIGNAL_0; | |
3637 | inferior_thread ()->suspend.stop_signal = sig; | |
3638 | ||
3639 | if (signal_print_state (sig)) | |
3640 | observer_notify_signal_received (sig); | |
3641 | } | |
3642 | ||
3643 | print_stop_event (&ws); | |
3644 | observer_notify_normal_stop (NULL, 1); | |
3645 | } | |
3646 | } | |
3647 | ||
9cbc821d | 3648 | static void |
04bd08de | 3649 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3650 | { |
c8d104ad PA |
3651 | struct remote_state *rs = get_remote_state (); |
3652 | struct packet_config *noack_config; | |
2d717e4f | 3653 | char *wait_status = NULL; |
8621d6a9 | 3654 | |
23860348 | 3655 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3656 | QUIT; |
c906108c | 3657 | |
9a7071a8 JB |
3658 | if (interrupt_on_connect) |
3659 | send_interrupt_sequence (); | |
3660 | ||
57e12211 | 3661 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3662 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3663 | |
1e51243a PA |
3664 | /* Signal other parts that we're going through the initial setup, |
3665 | and so things may not be stable yet. */ | |
3666 | rs->starting_up = 1; | |
3667 | ||
c8d104ad PA |
3668 | /* The first packet we send to the target is the optional "supported |
3669 | packets" request. If the target can answer this, it will tell us | |
3670 | which later probes to skip. */ | |
3671 | remote_query_supported (); | |
3672 | ||
d914c394 | 3673 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3674 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3675 | remote_set_permissions (target); |
d914c394 | 3676 | |
c8d104ad PA |
3677 | /* Next, we possibly activate noack mode. |
3678 | ||
3679 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3680 | enable noack mode if the stub reported a wish for it with | |
3681 | qSupported. | |
3682 | ||
3683 | If set to TRUE, then enable noack mode even if the stub didn't | |
3684 | report it in qSupported. If the stub doesn't reply OK, the | |
3685 | session ends with an error. | |
3686 | ||
3687 | If FALSE, then don't activate noack mode, regardless of what the | |
3688 | stub claimed should be the default with qSupported. */ | |
3689 | ||
3690 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3691 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3692 | { |
3693 | putpkt ("QStartNoAckMode"); | |
3694 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3695 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3696 | rs->noack_mode = 1; | |
3697 | } | |
3698 | ||
04bd08de | 3699 | if (extended_p) |
5fe04517 PA |
3700 | { |
3701 | /* Tell the remote that we are using the extended protocol. */ | |
3702 | putpkt ("!"); | |
3703 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3704 | } | |
3705 | ||
9b224c5e PA |
3706 | /* Let the target know which signals it is allowed to pass down to |
3707 | the program. */ | |
3708 | update_signals_program_target (); | |
3709 | ||
d962ef82 DJ |
3710 | /* Next, if the target can specify a description, read it. We do |
3711 | this before anything involving memory or registers. */ | |
3712 | target_find_description (); | |
3713 | ||
6c95b8df PA |
3714 | /* Next, now that we know something about the target, update the |
3715 | address spaces in the program spaces. */ | |
3716 | update_address_spaces (); | |
3717 | ||
50c71eaf PA |
3718 | /* On OSs where the list of libraries is global to all |
3719 | processes, we fetch them early. */ | |
f5656ead | 3720 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3721 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3722 | |
74531fed PA |
3723 | if (non_stop) |
3724 | { | |
4082afcc | 3725 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3726 | error (_("Non-stop mode requested, but remote " |
3727 | "does not support non-stop")); | |
74531fed PA |
3728 | |
3729 | putpkt ("QNonStop:1"); | |
3730 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3731 | ||
3732 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3733 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3734 | |
3735 | /* Find about threads and processes the stub is already | |
3736 | controlling. We default to adding them in the running state. | |
3737 | The '?' query below will then tell us about which threads are | |
3738 | stopped. */ | |
e8032dde | 3739 | remote_update_thread_list (target); |
74531fed | 3740 | } |
4082afcc | 3741 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3742 | { |
3743 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3744 | Request it explicitly. */ |
74531fed PA |
3745 | putpkt ("QNonStop:0"); |
3746 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3747 | ||
3748 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3749 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3750 | } |
3751 | ||
a0743c90 YQ |
3752 | /* Upload TSVs regardless of whether the target is running or not. The |
3753 | remote stub, such as GDBserver, may have some predefined or builtin | |
3754 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3755 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3756 | { |
3757 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3758 | ||
181e3713 | 3759 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3760 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3761 | } | |
3762 | ||
2d717e4f DJ |
3763 | /* Check whether the target is running now. */ |
3764 | putpkt ("?"); | |
3765 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3766 | ||
74531fed | 3767 | if (!non_stop) |
2d717e4f | 3768 | { |
e714e1bf UW |
3769 | ptid_t ptid; |
3770 | int fake_pid_p = 0; | |
3771 | struct inferior *inf; | |
3772 | ||
74531fed | 3773 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3774 | { |
04bd08de | 3775 | if (!extended_p) |
74531fed | 3776 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3777 | |
3778 | /* We're connected, but not running. Drop out before we | |
3779 | call start_remote. */ | |
e278ad5b | 3780 | rs->starting_up = 0; |
c35b1492 | 3781 | return; |
2d717e4f DJ |
3782 | } |
3783 | else | |
74531fed | 3784 | { |
74531fed PA |
3785 | /* Save the reply for later. */ |
3786 | wait_status = alloca (strlen (rs->buf) + 1); | |
3787 | strcpy (wait_status, rs->buf); | |
3788 | } | |
3789 | ||
b7ea362b | 3790 | /* Fetch thread list. */ |
e8032dde | 3791 | target_update_thread_list (); |
b7ea362b | 3792 | |
74531fed PA |
3793 | /* Let the stub know that we want it to return the thread. */ |
3794 | set_continue_thread (minus_one_ptid); | |
3795 | ||
b7ea362b PA |
3796 | if (thread_count () == 0) |
3797 | { | |
3798 | /* Target has no concept of threads at all. GDB treats | |
3799 | non-threaded target as single-threaded; add a main | |
3800 | thread. */ | |
3801 | add_current_inferior_and_thread (wait_status); | |
3802 | } | |
3803 | else | |
3804 | { | |
3805 | /* We have thread information; select the thread the target | |
3806 | says should be current. If we're reconnecting to a | |
3807 | multi-threaded program, this will ideally be the thread | |
3808 | that last reported an event before GDB disconnected. */ | |
3809 | inferior_ptid = get_current_thread (wait_status); | |
3810 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3811 | { | |
3812 | /* Odd... The target was able to list threads, but not | |
3813 | tell us which thread was current (no "thread" | |
3814 | register in T stop reply?). Just pick the first | |
3815 | thread in the thread list then. */ | |
c9f35b34 KB |
3816 | |
3817 | if (remote_debug) | |
3818 | fprintf_unfiltered (gdb_stdlog, | |
3819 | "warning: couldn't determine remote " | |
3820 | "current thread; picking first in list.\n"); | |
3821 | ||
b7ea362b PA |
3822 | inferior_ptid = thread_list->ptid; |
3823 | } | |
3824 | } | |
74531fed | 3825 | |
6e586cc5 YQ |
3826 | /* init_wait_for_inferior should be called before get_offsets in order |
3827 | to manage `inserted' flag in bp loc in a correct state. | |
3828 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3829 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3830 | start_remote, set `inserted' flag to 1. In the initialization of | |
3831 | inferior, breakpoint_init_inferior should be called first, and then | |
3832 | breakpoint_re_set can be called. If this order is broken, state of | |
3833 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3834 | manipulation. */ | |
3835 | init_wait_for_inferior (); | |
3836 | ||
74531fed PA |
3837 | get_offsets (); /* Get text, data & bss offsets. */ |
3838 | ||
d962ef82 DJ |
3839 | /* If we could not find a description using qXfer, and we know |
3840 | how to do it some other way, try again. This is not | |
3841 | supported for non-stop; it could be, but it is tricky if | |
3842 | there are no stopped threads when we connect. */ | |
04bd08de | 3843 | if (remote_read_description_p (target) |
f5656ead | 3844 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3845 | { |
3846 | target_clear_description (); | |
3847 | target_find_description (); | |
3848 | } | |
3849 | ||
74531fed PA |
3850 | /* Use the previously fetched status. */ |
3851 | gdb_assert (wait_status != NULL); | |
3852 | strcpy (rs->buf, wait_status); | |
3853 | rs->cached_wait_status = 1; | |
3854 | ||
3855 | immediate_quit--; | |
04bd08de | 3856 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3857 | } |
3858 | else | |
3859 | { | |
221e1a37 PA |
3860 | ptid_t current_ptid; |
3861 | ||
68c97600 PA |
3862 | /* Clear WFI global state. Do this before finding about new |
3863 | threads and inferiors, and setting the current inferior. | |
3864 | Otherwise we would clear the proceed status of the current | |
3865 | inferior when we want its stop_soon state to be preserved | |
3866 | (see notice_new_inferior). */ | |
3867 | init_wait_for_inferior (); | |
3868 | ||
74531fed PA |
3869 | /* In non-stop, we will either get an "OK", meaning that there |
3870 | are no stopped threads at this time; or, a regular stop | |
3871 | reply. In the latter case, there may be more than one thread | |
3872 | stopped --- we pull them all out using the vStopped | |
3873 | mechanism. */ | |
3874 | if (strcmp (rs->buf, "OK") != 0) | |
3875 | { | |
722247f1 | 3876 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3877 | |
722247f1 YQ |
3878 | /* remote_notif_get_pending_replies acks this one, and gets |
3879 | the rest out. */ | |
f48ff2a7 | 3880 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3881 | = remote_notif_parse (notif, rs->buf); |
3882 | remote_notif_get_pending_events (notif); | |
74531fed | 3883 | } |
2d717e4f | 3884 | |
74531fed PA |
3885 | if (thread_count () == 0) |
3886 | { | |
04bd08de | 3887 | if (!extended_p) |
74531fed | 3888 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3889 | |
c35b1492 PA |
3890 | /* We're connected, but not running. Drop out before we |
3891 | call start_remote. */ | |
e278ad5b | 3892 | rs->starting_up = 0; |
c35b1492 PA |
3893 | return; |
3894 | } | |
74531fed PA |
3895 | |
3896 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3897 | |
74531fed PA |
3898 | /* Force the stub to choose a thread. */ |
3899 | set_general_thread (null_ptid); | |
c906108c | 3900 | |
74531fed | 3901 | /* Query it. */ |
221e1a37 | 3902 | current_ptid = remote_current_thread (minus_one_ptid); |
74531fed PA |
3903 | if (ptid_equal (inferior_ptid, minus_one_ptid)) |
3904 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3905 | |
221e1a37 | 3906 | inferior_ptid = current_ptid; |
74531fed PA |
3907 | get_offsets (); /* Get text, data & bss offsets. */ |
3908 | ||
3909 | /* In non-stop mode, any cached wait status will be stored in | |
3910 | the stop reply queue. */ | |
3911 | gdb_assert (wait_status == NULL); | |
f0223081 | 3912 | |
2455069d | 3913 | /* Report all signals during attach/startup. */ |
94bedb42 | 3914 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
3915 | |
3916 | /* If there are already stopped threads, mark them stopped and | |
3917 | report their stops before giving the prompt to the user. */ | |
3918 | process_initial_stop_replies (); | |
3919 | ||
3920 | switch_to_thread (current_ptid); | |
3921 | ||
3922 | if (target_can_async_p ()) | |
3923 | target_async (1); | |
74531fed | 3924 | } |
c8d104ad | 3925 | |
c8d104ad PA |
3926 | /* If we connected to a live target, do some additional setup. */ |
3927 | if (target_has_execution) | |
3928 | { | |
f4ccffad | 3929 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3930 | remote_check_symbols (); |
c8d104ad | 3931 | } |
50c71eaf | 3932 | |
d5551862 SS |
3933 | /* Possibly the target has been engaged in a trace run started |
3934 | previously; find out where things are at. */ | |
8bd200f1 | 3935 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3936 | { |
00bf0b85 | 3937 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3938 | |
00bf0b85 SS |
3939 | if (current_trace_status ()->running) |
3940 | printf_filtered (_("Trace is already running on the target.\n")); | |
3941 | ||
ab6617cc | 3942 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3943 | |
3944 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3945 | } |
3946 | ||
1e51243a PA |
3947 | /* The thread and inferior lists are now synchronized with the |
3948 | target, our symbols have been relocated, and we're merged the | |
3949 | target's tracepoints with ours. We're done with basic start | |
3950 | up. */ | |
3951 | rs->starting_up = 0; | |
3952 | ||
a25a5a45 PA |
3953 | /* Maybe breakpoints are global and need to be inserted now. */ |
3954 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 3955 | insert_breakpoints (); |
c906108c SS |
3956 | } |
3957 | ||
3958 | /* Open a connection to a remote debugger. | |
3959 | NAME is the filename used for communication. */ | |
3960 | ||
3961 | static void | |
014f9477 | 3962 | remote_open (const char *name, int from_tty) |
c906108c | 3963 | { |
75c99385 | 3964 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3965 | } |
3966 | ||
c906108c SS |
3967 | /* Open a connection to a remote debugger using the extended |
3968 | remote gdb protocol. NAME is the filename used for communication. */ | |
3969 | ||
3970 | static void | |
014f9477 | 3971 | extended_remote_open (const char *name, int from_tty) |
c906108c | 3972 | { |
75c99385 | 3973 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3974 | } |
3975 | ||
ca4f7f8b PA |
3976 | /* Reset all packets back to "unknown support". Called when opening a |
3977 | new connection to a remote target. */ | |
c906108c | 3978 | |
d471ea57 | 3979 | static void |
ca4f7f8b | 3980 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3981 | { |
3982 | int i; | |
a744cf53 | 3983 | |
444abaca | 3984 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3985 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3986 | } |
3987 | ||
ca4f7f8b PA |
3988 | /* Initialize all packet configs. */ |
3989 | ||
3990 | static void | |
3991 | init_all_packet_configs (void) | |
3992 | { | |
3993 | int i; | |
3994 | ||
3995 | for (i = 0; i < PACKET_MAX; i++) | |
3996 | { | |
3997 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3998 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3999 | } | |
4000 | } | |
4001 | ||
23860348 | 4002 | /* Symbol look-up. */ |
dc8acb97 MS |
4003 | |
4004 | static void | |
36d25514 | 4005 | remote_check_symbols (void) |
dc8acb97 | 4006 | { |
d01949b6 | 4007 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4008 | char *msg, *reply, *tmp; |
3b7344d5 | 4009 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
4010 | int end; |
4011 | ||
63154eca PA |
4012 | /* The remote side has no concept of inferiors that aren't running |
4013 | yet, it only knows about running processes. If we're connected | |
4014 | but our current inferior is not running, we should not invite the | |
4015 | remote target to request symbol lookups related to its | |
4016 | (unrelated) current process. */ | |
4017 | if (!target_has_execution) | |
4018 | return; | |
4019 | ||
4082afcc | 4020 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4021 | return; |
4022 | ||
63154eca PA |
4023 | /* Make sure the remote is pointing at the right process. Note |
4024 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4025 | set_general_process (); |
4026 | ||
6d820c5c DJ |
4027 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4028 | because we need both at the same time. */ | |
ea9c271d | 4029 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 4030 | |
23860348 | 4031 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4032 | |
4033 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
4034 | getpkt (&rs->buf, &rs->buf_size, 0); |
4035 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 4036 | reply = rs->buf; |
dc8acb97 | 4037 | |
61012eef | 4038 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4039 | { |
77e371c0 TT |
4040 | struct bound_minimal_symbol sym; |
4041 | ||
dc8acb97 | 4042 | tmp = &reply[8]; |
cfd77fa1 | 4043 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4044 | msg[end] = '\0'; |
4045 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4046 | if (sym.minsym == NULL) |
ea9c271d | 4047 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4048 | else |
2bbe3cc1 | 4049 | { |
f5656ead | 4050 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4051 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4052 | |
4053 | /* If this is a function address, return the start of code | |
4054 | instead of any data function descriptor. */ | |
f5656ead | 4055 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4056 | sym_addr, |
4057 | ¤t_target); | |
4058 | ||
4059 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4060 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4061 | } |
4062 | ||
dc8acb97 | 4063 | putpkt (msg); |
6d820c5c | 4064 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4065 | reply = rs->buf; |
dc8acb97 MS |
4066 | } |
4067 | } | |
4068 | ||
9db8d71f | 4069 | static struct serial * |
baa336ce | 4070 | remote_serial_open (const char *name) |
9db8d71f DJ |
4071 | { |
4072 | static int udp_warning = 0; | |
4073 | ||
4074 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4075 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4076 | serial connection is reliable and not the serial connection promising | |
4077 | to be. */ | |
61012eef | 4078 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4079 | { |
3e43a32a MS |
4080 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4081 | "Some events may be lost, rendering further debugging " | |
4082 | "impossible.")); | |
9db8d71f DJ |
4083 | udp_warning = 1; |
4084 | } | |
4085 | ||
4086 | return serial_open (name); | |
4087 | } | |
4088 | ||
d914c394 SS |
4089 | /* Inform the target of our permission settings. The permission flags |
4090 | work without this, but if the target knows the settings, it can do | |
4091 | a couple things. First, it can add its own check, to catch cases | |
4092 | that somehow manage to get by the permissions checks in target | |
4093 | methods. Second, if the target is wired to disallow particular | |
4094 | settings (for instance, a system in the field that is not set up to | |
4095 | be able to stop at a breakpoint), it can object to any unavailable | |
4096 | permissions. */ | |
4097 | ||
4098 | void | |
c378d69d | 4099 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4100 | { |
4101 | struct remote_state *rs = get_remote_state (); | |
4102 | ||
bba74b36 YQ |
4103 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4104 | "WriteReg:%x;WriteMem:%x;" | |
4105 | "InsertBreak:%x;InsertTrace:%x;" | |
4106 | "InsertFastTrace:%x;Stop:%x", | |
4107 | may_write_registers, may_write_memory, | |
4108 | may_insert_breakpoints, may_insert_tracepoints, | |
4109 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4110 | putpkt (rs->buf); |
4111 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4112 | ||
4113 | /* If the target didn't like the packet, warn the user. Do not try | |
4114 | to undo the user's settings, that would just be maddening. */ | |
4115 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4116 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4117 | } |
4118 | ||
be2a5f71 DJ |
4119 | /* This type describes each known response to the qSupported |
4120 | packet. */ | |
4121 | struct protocol_feature | |
4122 | { | |
4123 | /* The name of this protocol feature. */ | |
4124 | const char *name; | |
4125 | ||
4126 | /* The default for this protocol feature. */ | |
4127 | enum packet_support default_support; | |
4128 | ||
4129 | /* The function to call when this feature is reported, or after | |
4130 | qSupported processing if the feature is not supported. | |
4131 | The first argument points to this structure. The second | |
4132 | argument indicates whether the packet requested support be | |
4133 | enabled, disabled, or probed (or the default, if this function | |
4134 | is being called at the end of processing and this feature was | |
4135 | not reported). The third argument may be NULL; if not NULL, it | |
4136 | is a NUL-terminated string taken from the packet following | |
4137 | this feature's name and an equals sign. */ | |
4138 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4139 | const char *); | |
4140 | ||
4141 | /* The corresponding packet for this feature. Only used if | |
4142 | FUNC is remote_supported_packet. */ | |
4143 | int packet; | |
4144 | }; | |
4145 | ||
be2a5f71 DJ |
4146 | static void |
4147 | remote_supported_packet (const struct protocol_feature *feature, | |
4148 | enum packet_support support, | |
4149 | const char *argument) | |
4150 | { | |
4151 | if (argument) | |
4152 | { | |
4153 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4154 | " \"%s\"."), feature->name); | |
4155 | return; | |
4156 | } | |
4157 | ||
4082afcc | 4158 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4159 | } |
be2a5f71 DJ |
4160 | |
4161 | static void | |
4162 | remote_packet_size (const struct protocol_feature *feature, | |
4163 | enum packet_support support, const char *value) | |
4164 | { | |
4165 | struct remote_state *rs = get_remote_state (); | |
4166 | ||
4167 | int packet_size; | |
4168 | char *value_end; | |
4169 | ||
4170 | if (support != PACKET_ENABLE) | |
4171 | return; | |
4172 | ||
4173 | if (value == NULL || *value == '\0') | |
4174 | { | |
4175 | warning (_("Remote target reported \"%s\" without a size."), | |
4176 | feature->name); | |
4177 | return; | |
4178 | } | |
4179 | ||
4180 | errno = 0; | |
4181 | packet_size = strtol (value, &value_end, 16); | |
4182 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4183 | { | |
4184 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4185 | feature->name, value); | |
4186 | return; | |
4187 | } | |
4188 | ||
4189 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
4190 | { | |
4191 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
4192 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
4193 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
4194 | } | |
4195 | ||
4196 | /* Record the new maximum packet size. */ | |
4197 | rs->explicit_packet_size = packet_size; | |
4198 | } | |
4199 | ||
dc473cfb | 4200 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4201 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4202 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4203 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4204 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4205 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4206 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4207 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4208 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4209 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4210 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4211 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4212 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4213 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4214 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4215 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4216 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4217 | PACKET_qXfer_spu_read }, | |
4218 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4219 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4220 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4221 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4222 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4223 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4224 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4225 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4226 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4227 | PACKET_QPassSignals }, | |
9b224c5e PA |
4228 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4229 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4230 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4231 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4232 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4233 | PACKET_multiprocess_feature }, | |
4234 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4235 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4236 | PACKET_qXfer_siginfo_read }, | |
4237 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4238 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4239 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4240 | PACKET_ConditionalTracepoints }, |
4082afcc | 4241 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4242 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4243 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4244 | PACKET_BreakpointCommands }, |
4082afcc | 4245 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4246 | PACKET_FastTracepoints }, |
4082afcc | 4247 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4248 | PACKET_StaticTracepoints }, |
4082afcc | 4249 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4250 | PACKET_InstallInTrace}, |
4082afcc PA |
4251 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4252 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4253 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4254 | PACKET_bc }, | |
4255 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4256 | PACKET_bs }, | |
409873ef SS |
4257 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4258 | PACKET_TracepointSource }, | |
d914c394 SS |
4259 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4260 | PACKET_QAllow }, | |
4082afcc PA |
4261 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4262 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4263 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4264 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4265 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4266 | PACKET_qXfer_uib }, | |
03583c20 UW |
4267 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4268 | PACKET_QDisableRandomization }, | |
d1feda86 | 4269 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4270 | { "QTBuffer:size", PACKET_DISABLE, |
4271 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4272 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4273 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4274 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4275 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4276 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4277 | PACKET_qXfer_btrace }, |
4278 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4279 | PACKET_qXfer_btrace_conf }, |
4280 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4281 | PACKET_Qbtrace_conf_bts_size }, |
4282 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4283 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4284 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4285 | PACKET_fork_event_feature }, | |
4286 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4287 | PACKET_vfork_event_feature }, | |
b20a6524 MM |
4288 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
4289 | PACKET_Qbtrace_conf_pt_size } | |
be2a5f71 DJ |
4290 | }; |
4291 | ||
c8d5aac9 L |
4292 | static char *remote_support_xml; |
4293 | ||
4294 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4295 | ||
4296 | void | |
6e39997a | 4297 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4298 | { |
4299 | #if defined(HAVE_LIBEXPAT) | |
4300 | if (remote_support_xml == NULL) | |
c4f7c687 | 4301 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4302 | else |
4303 | { | |
4304 | char *copy = xstrdup (remote_support_xml + 13); | |
4305 | char *p = strtok (copy, ","); | |
4306 | ||
4307 | do | |
4308 | { | |
4309 | if (strcmp (p, xml) == 0) | |
4310 | { | |
4311 | /* already there */ | |
4312 | xfree (copy); | |
4313 | return; | |
4314 | } | |
4315 | } | |
4316 | while ((p = strtok (NULL, ",")) != NULL); | |
4317 | xfree (copy); | |
4318 | ||
94b0dee1 PA |
4319 | remote_support_xml = reconcat (remote_support_xml, |
4320 | remote_support_xml, ",", xml, | |
4321 | (char *) NULL); | |
c8d5aac9 L |
4322 | } |
4323 | #endif | |
4324 | } | |
4325 | ||
4326 | static char * | |
4327 | remote_query_supported_append (char *msg, const char *append) | |
4328 | { | |
4329 | if (msg) | |
94b0dee1 | 4330 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4331 | else |
4332 | return xstrdup (append); | |
4333 | } | |
4334 | ||
be2a5f71 DJ |
4335 | static void |
4336 | remote_query_supported (void) | |
4337 | { | |
4338 | struct remote_state *rs = get_remote_state (); | |
4339 | char *next; | |
4340 | int i; | |
4341 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4342 | ||
4343 | /* The packet support flags are handled differently for this packet | |
4344 | than for most others. We treat an error, a disabled packet, and | |
4345 | an empty response identically: any features which must be reported | |
4346 | to be used will be automatically disabled. An empty buffer | |
4347 | accomplishes this, since that is also the representation for a list | |
4348 | containing no features. */ | |
4349 | ||
4350 | rs->buf[0] = 0; | |
4082afcc | 4351 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4352 | { |
c8d5aac9 | 4353 | char *q = NULL; |
94b0dee1 | 4354 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4355 | |
73b8c1fd PA |
4356 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4357 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4358 | |
f7e6eed5 PA |
4359 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4360 | q = remote_query_supported_append (q, "swbreak+"); | |
4361 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4362 | q = remote_query_supported_append (q, "hwbreak+"); | |
4363 | ||
c8d5aac9 L |
4364 | if (remote_support_xml) |
4365 | q = remote_query_supported_append (q, remote_support_xml); | |
4366 | ||
dde08ee1 PA |
4367 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4368 | ||
89245bc0 DB |
4369 | if (rs->extended) |
4370 | { | |
4371 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4372 | != AUTO_BOOLEAN_FALSE) | |
4373 | q = remote_query_supported_append (q, "fork-events+"); | |
4374 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4375 | != AUTO_BOOLEAN_FALSE) | |
4376 | q = remote_query_supported_append (q, "vfork-events+"); | |
4377 | } | |
4378 | ||
dde08ee1 PA |
4379 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4380 | putpkt (q); | |
82f73884 | 4381 | |
94b0dee1 PA |
4382 | do_cleanups (old_chain); |
4383 | ||
be2a5f71 DJ |
4384 | getpkt (&rs->buf, &rs->buf_size, 0); |
4385 | ||
4386 | /* If an error occured, warn, but do not return - just reset the | |
4387 | buffer to empty and go on to disable features. */ | |
4388 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4389 | == PACKET_ERROR) | |
4390 | { | |
4391 | warning (_("Remote failure reply: %s"), rs->buf); | |
4392 | rs->buf[0] = 0; | |
4393 | } | |
4394 | } | |
4395 | ||
4396 | memset (seen, 0, sizeof (seen)); | |
4397 | ||
4398 | next = rs->buf; | |
4399 | while (*next) | |
4400 | { | |
4401 | enum packet_support is_supported; | |
4402 | char *p, *end, *name_end, *value; | |
4403 | ||
4404 | /* First separate out this item from the rest of the packet. If | |
4405 | there's another item after this, we overwrite the separator | |
4406 | (terminated strings are much easier to work with). */ | |
4407 | p = next; | |
4408 | end = strchr (p, ';'); | |
4409 | if (end == NULL) | |
4410 | { | |
4411 | end = p + strlen (p); | |
4412 | next = end; | |
4413 | } | |
4414 | else | |
4415 | { | |
89be2091 DJ |
4416 | *end = '\0'; |
4417 | next = end + 1; | |
4418 | ||
be2a5f71 DJ |
4419 | if (end == p) |
4420 | { | |
4421 | warning (_("empty item in \"qSupported\" response")); | |
4422 | continue; | |
4423 | } | |
be2a5f71 DJ |
4424 | } |
4425 | ||
4426 | name_end = strchr (p, '='); | |
4427 | if (name_end) | |
4428 | { | |
4429 | /* This is a name=value entry. */ | |
4430 | is_supported = PACKET_ENABLE; | |
4431 | value = name_end + 1; | |
4432 | *name_end = '\0'; | |
4433 | } | |
4434 | else | |
4435 | { | |
4436 | value = NULL; | |
4437 | switch (end[-1]) | |
4438 | { | |
4439 | case '+': | |
4440 | is_supported = PACKET_ENABLE; | |
4441 | break; | |
4442 | ||
4443 | case '-': | |
4444 | is_supported = PACKET_DISABLE; | |
4445 | break; | |
4446 | ||
4447 | case '?': | |
4448 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4449 | break; | |
4450 | ||
4451 | default: | |
3e43a32a MS |
4452 | warning (_("unrecognized item \"%s\" " |
4453 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4454 | continue; |
4455 | } | |
4456 | end[-1] = '\0'; | |
4457 | } | |
4458 | ||
4459 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4460 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4461 | { | |
4462 | const struct protocol_feature *feature; | |
4463 | ||
4464 | seen[i] = 1; | |
4465 | feature = &remote_protocol_features[i]; | |
4466 | feature->func (feature, is_supported, value); | |
4467 | break; | |
4468 | } | |
4469 | } | |
4470 | ||
4471 | /* If we increased the packet size, make sure to increase the global | |
4472 | buffer size also. We delay this until after parsing the entire | |
4473 | qSupported packet, because this is the same buffer we were | |
4474 | parsing. */ | |
4475 | if (rs->buf_size < rs->explicit_packet_size) | |
4476 | { | |
4477 | rs->buf_size = rs->explicit_packet_size; | |
4478 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4479 | } | |
4480 | ||
4481 | /* Handle the defaults for unmentioned features. */ | |
4482 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4483 | if (!seen[i]) | |
4484 | { | |
4485 | const struct protocol_feature *feature; | |
4486 | ||
4487 | feature = &remote_protocol_features[i]; | |
4488 | feature->func (feature, feature->default_support, NULL); | |
4489 | } | |
4490 | } | |
4491 | ||
78a095c3 JK |
4492 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4493 | on it so remove them first. */ | |
4494 | ||
4495 | static void | |
4496 | remote_unpush_target (void) | |
4497 | { | |
4498 | pop_all_targets_above (process_stratum - 1); | |
4499 | } | |
be2a5f71 | 4500 | |
c906108c | 4501 | static void |
014f9477 | 4502 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4503 | struct target_ops *target, int extended_p) |
c906108c | 4504 | { |
d01949b6 | 4505 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4506 | |
c906108c | 4507 | if (name == 0) |
8a3fe4f8 | 4508 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4509 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4510 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4511 | |
23860348 | 4512 | /* See FIXME above. */ |
c6ebd6cf | 4513 | if (!target_async_permitted) |
92d1e331 | 4514 | wait_forever_enabled_p = 1; |
6426a772 | 4515 | |
2d717e4f | 4516 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4517 | Ask this question first, before target_preopen has a chance to kill |
4518 | anything. */ | |
5d93a237 | 4519 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4520 | { |
78a095c3 JK |
4521 | if (from_tty |
4522 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4523 | error (_("Still connected.")); |
4524 | } | |
4525 | ||
78a095c3 | 4526 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4527 | target_preopen (from_tty); |
4528 | ||
89be2091 | 4529 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4530 | xfree (rs->last_pass_packet); |
4531 | rs->last_pass_packet = NULL; | |
89be2091 | 4532 | |
9b224c5e PA |
4533 | /* Make sure we send the program signals list the next time we |
4534 | resume. */ | |
5e4a05c4 TT |
4535 | xfree (rs->last_program_signals_packet); |
4536 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4537 | |
ad9a8f3f | 4538 | remote_fileio_reset (); |
1dd41f16 NS |
4539 | reopen_exec_file (); |
4540 | reread_symbols (); | |
4541 | ||
5d93a237 TT |
4542 | rs->remote_desc = remote_serial_open (name); |
4543 | if (!rs->remote_desc) | |
c906108c SS |
4544 | perror_with_name (name); |
4545 | ||
4546 | if (baud_rate != -1) | |
4547 | { | |
5d93a237 | 4548 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4549 | { |
9b74d5d3 KB |
4550 | /* The requested speed could not be set. Error out to |
4551 | top level after closing remote_desc. Take care to | |
4552 | set remote_desc to NULL to avoid closing remote_desc | |
4553 | more than once. */ | |
5d93a237 TT |
4554 | serial_close (rs->remote_desc); |
4555 | rs->remote_desc = NULL; | |
c906108c SS |
4556 | perror_with_name (name); |
4557 | } | |
4558 | } | |
4559 | ||
236af5e3 | 4560 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4561 | serial_raw (rs->remote_desc); |
c906108c SS |
4562 | |
4563 | /* If there is something sitting in the buffer we might take it as a | |
4564 | response to a command, which would be bad. */ | |
5d93a237 | 4565 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4566 | |
4567 | if (from_tty) | |
4568 | { | |
4569 | puts_filtered ("Remote debugging using "); | |
4570 | puts_filtered (name); | |
4571 | puts_filtered ("\n"); | |
4572 | } | |
23860348 | 4573 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4574 | |
74531fed PA |
4575 | /* Register extra event sources in the event loop. */ |
4576 | remote_async_inferior_event_token | |
4577 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4578 | NULL); | |
5965e028 | 4579 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4580 | |
be2a5f71 DJ |
4581 | /* Reset the target state; these things will be queried either by |
4582 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4583 | reset_all_packet_configs_support (); |
74531fed | 4584 | rs->cached_wait_status = 0; |
be2a5f71 | 4585 | rs->explicit_packet_size = 0; |
a6f3e723 | 4586 | rs->noack_mode = 0; |
82f73884 | 4587 | rs->extended = extended_p; |
e24a49d8 | 4588 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4589 | rs->ctrlc_pending_p = 0; |
802188a7 | 4590 | |
47f8a51d TT |
4591 | rs->general_thread = not_sent_ptid; |
4592 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4593 | rs->remote_traceframe_number = -1; |
c906108c | 4594 | |
9d1f7ab2 | 4595 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4596 | rs->use_threadinfo_query = 1; |
4597 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4598 | |
80152258 PA |
4599 | readahead_cache_invalidate (); |
4600 | ||
c6ebd6cf | 4601 | if (target_async_permitted) |
92d1e331 | 4602 | { |
23860348 | 4603 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4604 | remote_async_terminal_ours_p = 1; |
4605 | ||
4606 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4607 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4608 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4609 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4610 | around this. Eventually a mechanism that allows |
92d1e331 | 4611 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4612 | implemented. */ |
92d1e331 DJ |
4613 | wait_forever_enabled_p = 0; |
4614 | } | |
4615 | ||
23860348 | 4616 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4617 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4618 | |
74531fed PA |
4619 | /* Start afresh. */ |
4620 | init_thread_list (); | |
4621 | ||
36918e70 | 4622 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4623 | target (we'd otherwise be in an inconsistent state) and then |
4624 | propogate the error on up the exception chain. This ensures that | |
4625 | the caller doesn't stumble along blindly assuming that the | |
4626 | function succeeded. The CLI doesn't have this problem but other | |
4627 | UI's, such as MI do. | |
36918e70 AC |
4628 | |
4629 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4630 | this function should return an error indication letting the | |
ce2826aa | 4631 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4632 | ``target remote'' is directly wired to this function making that |
4633 | impossible. On a positive note, the CLI side of this problem has | |
4634 | been fixed - the function set_cmd_context() makes it possible for | |
4635 | all the ``target ....'' commands to share a common callback | |
4636 | function. See cli-dump.c. */ | |
109c3e39 | 4637 | { |
2d717e4f | 4638 | |
492d29ea | 4639 | TRY |
04bd08de TT |
4640 | { |
4641 | remote_start_remote (from_tty, target, extended_p); | |
4642 | } | |
492d29ea | 4643 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4644 | { |
c8d104ad PA |
4645 | /* Pop the partially set up target - unless something else did |
4646 | already before throwing the exception. */ | |
5d93a237 | 4647 | if (rs->remote_desc != NULL) |
78a095c3 | 4648 | remote_unpush_target (); |
c6ebd6cf | 4649 | if (target_async_permitted) |
109c3e39 AC |
4650 | wait_forever_enabled_p = 1; |
4651 | throw_exception (ex); | |
4652 | } | |
492d29ea | 4653 | END_CATCH |
109c3e39 | 4654 | } |
c906108c | 4655 | |
f4abbc16 MM |
4656 | remote_btrace_reset (); |
4657 | ||
c6ebd6cf | 4658 | if (target_async_permitted) |
92d1e331 | 4659 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4660 | } |
4661 | ||
de0d863e DB |
4662 | /* Detach the specified process. */ |
4663 | ||
4664 | static void | |
4665 | remote_detach_pid (int pid) | |
4666 | { | |
4667 | struct remote_state *rs = get_remote_state (); | |
4668 | ||
4669 | if (remote_multi_process_p (rs)) | |
4670 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4671 | else | |
4672 | strcpy (rs->buf, "D"); | |
4673 | ||
4674 | putpkt (rs->buf); | |
4675 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4676 | ||
4677 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4678 | ; | |
4679 | else if (rs->buf[0] == '\0') | |
4680 | error (_("Remote doesn't know how to detach")); | |
4681 | else | |
4682 | error (_("Can't detach process.")); | |
4683 | } | |
4684 | ||
4685 | /* This detaches a program to which we previously attached, using | |
4686 | inferior_ptid to identify the process. After this is done, GDB | |
4687 | can be used to debug some other program. We better not have left | |
4688 | any breakpoints in the target program or it'll die when it hits | |
4689 | one. */ | |
c906108c SS |
4690 | |
4691 | static void | |
de0d863e | 4692 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4693 | { |
82f73884 | 4694 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4695 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4696 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4697 | int is_fork_parent; | |
c906108c SS |
4698 | |
4699 | if (args) | |
8a3fe4f8 | 4700 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4701 | |
2d717e4f DJ |
4702 | if (!target_has_execution) |
4703 | error (_("No process to detach from.")); | |
4704 | ||
7cee1e54 PA |
4705 | if (from_tty) |
4706 | { | |
4707 | char *exec_file = get_exec_file (0); | |
4708 | if (exec_file == NULL) | |
4709 | exec_file = ""; | |
4710 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4711 | target_pid_to_str (pid_to_ptid (pid))); | |
4712 | gdb_flush (gdb_stdout); | |
4713 | } | |
4714 | ||
c906108c | 4715 | /* Tell the remote target to detach. */ |
de0d863e | 4716 | remote_detach_pid (pid); |
82f73884 | 4717 | |
de0d863e | 4718 | if (from_tty && !rs->extended) |
7cee1e54 | 4719 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4720 | |
de0d863e DB |
4721 | /* Check to see if we are detaching a fork parent. Note that if we |
4722 | are detaching a fork child, tp == NULL. */ | |
4723 | is_fork_parent = (tp != NULL | |
4724 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4725 | ||
4726 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4727 | breakpoints that should be available for the followed inferior. */ | |
4728 | if (!is_fork_parent) | |
4729 | target_mourn_inferior (); | |
4730 | else | |
4731 | { | |
4732 | inferior_ptid = null_ptid; | |
4733 | detach_inferior (pid); | |
4734 | } | |
2d717e4f DJ |
4735 | } |
4736 | ||
4737 | static void | |
52554a0e | 4738 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4739 | { |
de0d863e | 4740 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4741 | } |
4742 | ||
4743 | static void | |
52554a0e | 4744 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4745 | { |
de0d863e DB |
4746 | remote_detach_1 (args, from_tty); |
4747 | } | |
4748 | ||
4749 | /* Target follow-fork function for remote targets. On entry, and | |
4750 | at return, the current inferior is the fork parent. | |
4751 | ||
4752 | Note that although this is currently only used for extended-remote, | |
4753 | it is named remote_follow_fork in anticipation of using it for the | |
4754 | remote target as well. */ | |
4755 | ||
4756 | static int | |
4757 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4758 | int detach_fork) | |
4759 | { | |
4760 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 4761 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 4762 | |
c269dbdb DB |
4763 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
4764 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
4765 | { |
4766 | /* When following the parent and detaching the child, we detach | |
4767 | the child here. For the case of following the child and | |
4768 | detaching the parent, the detach is done in the target- | |
4769 | independent follow fork code in infrun.c. We can't use | |
4770 | target_detach when detaching an unfollowed child because | |
4771 | the client side doesn't know anything about the child. */ | |
4772 | if (detach_fork && !follow_child) | |
4773 | { | |
4774 | /* Detach the fork child. */ | |
4775 | ptid_t child_ptid; | |
4776 | pid_t child_pid; | |
4777 | ||
4778 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4779 | child_pid = ptid_get_pid (child_ptid); | |
4780 | ||
4781 | remote_detach_pid (child_pid); | |
4782 | detach_inferior (child_pid); | |
4783 | } | |
4784 | } | |
4785 | return 0; | |
c906108c SS |
4786 | } |
4787 | ||
6ad8ae5c DJ |
4788 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4789 | ||
43ff13b4 | 4790 | static void |
fee354ee | 4791 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4792 | { |
43ff13b4 | 4793 | if (args) |
2d717e4f | 4794 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4795 | |
2d717e4f | 4796 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4797 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4798 | target_mourn_inferior. */ |
20f796c9 | 4799 | remote_mourn (target); |
2d717e4f | 4800 | |
43ff13b4 JM |
4801 | if (from_tty) |
4802 | puts_filtered ("Ending remote debugging.\n"); | |
4803 | } | |
4804 | ||
2d717e4f DJ |
4805 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4806 | be chatty about it. */ | |
4807 | ||
4808 | static void | |
20f796c9 GB |
4809 | extended_remote_attach (struct target_ops *target, const char *args, |
4810 | int from_tty) | |
2d717e4f DJ |
4811 | { |
4812 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4813 | int pid; |
96ef3384 | 4814 | char *wait_status = NULL; |
2d717e4f | 4815 | |
74164c56 | 4816 | pid = parse_pid_to_attach (args); |
2d717e4f | 4817 | |
74164c56 JK |
4818 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4819 | way as in other targets. */ | |
2d717e4f | 4820 | |
4082afcc | 4821 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4822 | error (_("This target does not support attaching to a process")); |
4823 | ||
7cee1e54 PA |
4824 | if (from_tty) |
4825 | { | |
4826 | char *exec_file = get_exec_file (0); | |
4827 | ||
4828 | if (exec_file) | |
4829 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4830 | target_pid_to_str (pid_to_ptid (pid))); | |
4831 | else | |
4832 | printf_unfiltered (_("Attaching to %s\n"), | |
4833 | target_pid_to_str (pid_to_ptid (pid))); | |
4834 | ||
4835 | gdb_flush (gdb_stdout); | |
4836 | } | |
4837 | ||
bba74b36 | 4838 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4839 | putpkt (rs->buf); |
4840 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4841 | ||
4082afcc PA |
4842 | switch (packet_ok (rs->buf, |
4843 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4844 | { |
4082afcc | 4845 | case PACKET_OK: |
74531fed PA |
4846 | if (!non_stop) |
4847 | { | |
4848 | /* Save the reply for later. */ | |
4849 | wait_status = alloca (strlen (rs->buf) + 1); | |
4850 | strcpy (wait_status, rs->buf); | |
4851 | } | |
4852 | else if (strcmp (rs->buf, "OK") != 0) | |
4853 | error (_("Attaching to %s failed with: %s"), | |
4854 | target_pid_to_str (pid_to_ptid (pid)), | |
4855 | rs->buf); | |
4082afcc PA |
4856 | break; |
4857 | case PACKET_UNKNOWN: | |
4858 | error (_("This target does not support attaching to a process")); | |
4859 | default: | |
4860 | error (_("Attaching to %s failed"), | |
4861 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4862 | } |
2d717e4f | 4863 | |
1b6e6f5c | 4864 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4865 | |
2d717e4f | 4866 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4867 | |
bad34192 PA |
4868 | if (non_stop) |
4869 | { | |
4870 | struct thread_info *thread; | |
79d7f229 | 4871 | |
bad34192 | 4872 | /* Get list of threads. */ |
e8032dde | 4873 | remote_update_thread_list (target); |
82f73884 | 4874 | |
bad34192 PA |
4875 | thread = first_thread_of_process (pid); |
4876 | if (thread) | |
4877 | inferior_ptid = thread->ptid; | |
4878 | else | |
4879 | inferior_ptid = pid_to_ptid (pid); | |
4880 | ||
4881 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4882 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4883 | } |
74531fed | 4884 | else |
bad34192 PA |
4885 | { |
4886 | /* Now, if we have thread information, update inferior_ptid. */ | |
4887 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4888 | ||
4889 | /* Add the main thread to the thread list. */ | |
4890 | add_thread_silent (inferior_ptid); | |
4891 | } | |
c0a2216e | 4892 | |
96ef3384 UW |
4893 | /* Next, if the target can specify a description, read it. We do |
4894 | this before anything involving memory or registers. */ | |
4895 | target_find_description (); | |
4896 | ||
74531fed PA |
4897 | if (!non_stop) |
4898 | { | |
4899 | /* Use the previously fetched status. */ | |
4900 | gdb_assert (wait_status != NULL); | |
4901 | ||
4902 | if (target_can_async_p ()) | |
4903 | { | |
722247f1 YQ |
4904 | struct notif_event *reply |
4905 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4906 | |
722247f1 | 4907 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4908 | |
6a3753b3 | 4909 | target_async (1); |
74531fed PA |
4910 | } |
4911 | else | |
4912 | { | |
4913 | gdb_assert (wait_status != NULL); | |
4914 | strcpy (rs->buf, wait_status); | |
4915 | rs->cached_wait_status = 1; | |
4916 | } | |
4917 | } | |
4918 | else | |
4919 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4920 | } |
4921 | ||
b9c1d481 AS |
4922 | /* Implementation of the to_post_attach method. */ |
4923 | ||
4924 | static void | |
4925 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
4926 | { | |
4927 | /* In certain cases GDB might not have had the chance to start | |
4928 | symbol lookup up until now. This could happen if the debugged | |
4929 | binary is not using shared libraries, the vsyscall page is not | |
4930 | present (on Linux) and the binary itself hadn't changed since the | |
4931 | debugging process was started. */ | |
4932 | if (symfile_objfile != NULL) | |
4933 | remote_check_symbols(); | |
4934 | } | |
4935 | ||
c906108c | 4936 | \f |
506fb367 DJ |
4937 | /* Check for the availability of vCont. This function should also check |
4938 | the response. */ | |
c906108c SS |
4939 | |
4940 | static void | |
6d820c5c | 4941 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4942 | { |
2e9f7625 | 4943 | char *buf; |
6d820c5c | 4944 | |
2e9f7625 DJ |
4945 | strcpy (rs->buf, "vCont?"); |
4946 | putpkt (rs->buf); | |
6d820c5c | 4947 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4948 | buf = rs->buf; |
c906108c | 4949 | |
506fb367 | 4950 | /* Make sure that the features we assume are supported. */ |
61012eef | 4951 | if (startswith (buf, "vCont")) |
506fb367 DJ |
4952 | { |
4953 | char *p = &buf[5]; | |
4954 | int support_s, support_S, support_c, support_C; | |
4955 | ||
4956 | support_s = 0; | |
4957 | support_S = 0; | |
4958 | support_c = 0; | |
4959 | support_C = 0; | |
d458bd84 | 4960 | rs->supports_vCont.t = 0; |
c1e36e3e | 4961 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4962 | while (p && *p == ';') |
4963 | { | |
4964 | p++; | |
4965 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4966 | support_s = 1; | |
4967 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4968 | support_S = 1; | |
4969 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4970 | support_c = 1; | |
4971 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4972 | support_C = 1; | |
74531fed | 4973 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4974 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4975 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4976 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4977 | |
4978 | p = strchr (p, ';'); | |
4979 | } | |
c906108c | 4980 | |
506fb367 DJ |
4981 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4982 | BUF will make packet_ok disable the packet. */ | |
4983 | if (!support_s || !support_S || !support_c || !support_C) | |
4984 | buf[0] = 0; | |
4985 | } | |
c906108c | 4986 | |
444abaca | 4987 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4988 | } |
c906108c | 4989 | |
0d8f58ca PA |
4990 | /* Helper function for building "vCont" resumptions. Write a |
4991 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4992 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4993 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4994 | resumed thread should be single-stepped and/or signalled. If PTID | |
4995 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4996 | represents a process, then all threads of the process are resumed; | |
4997 | the thread to be stepped and/or signalled is given in the global | |
4998 | INFERIOR_PTID. */ | |
4999 | ||
5000 | static char * | |
5001 | append_resumption (char *p, char *endp, | |
2ea28649 | 5002 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5003 | { |
5004 | struct remote_state *rs = get_remote_state (); | |
5005 | ||
a493e3e2 | 5006 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5007 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5008 | else if (step |
5009 | /* GDB is willing to range step. */ | |
5010 | && use_range_stepping | |
5011 | /* Target supports range stepping. */ | |
5012 | && rs->supports_vCont.r | |
5013 | /* We don't currently support range stepping multiple | |
5014 | threads with a wildcard (though the protocol allows it, | |
5015 | so stubs shouldn't make an active effort to forbid | |
5016 | it). */ | |
5017 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5018 | { | |
5019 | struct thread_info *tp; | |
5020 | ||
5021 | if (ptid_equal (ptid, minus_one_ptid)) | |
5022 | { | |
5023 | /* If we don't know about the target thread's tid, then | |
5024 | we're resuming magic_null_ptid (see caller). */ | |
5025 | tp = find_thread_ptid (magic_null_ptid); | |
5026 | } | |
5027 | else | |
5028 | tp = find_thread_ptid (ptid); | |
5029 | gdb_assert (tp != NULL); | |
5030 | ||
5031 | if (tp->control.may_range_step) | |
5032 | { | |
5033 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5034 | ||
5035 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5036 | phex_nz (tp->control.step_range_start, | |
5037 | addr_size), | |
5038 | phex_nz (tp->control.step_range_end, | |
5039 | addr_size)); | |
5040 | } | |
5041 | else | |
5042 | p += xsnprintf (p, endp - p, ";s"); | |
5043 | } | |
0d8f58ca PA |
5044 | else if (step) |
5045 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5046 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5047 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5048 | else | |
5049 | p += xsnprintf (p, endp - p, ";c"); | |
5050 | ||
5051 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5052 | { | |
5053 | ptid_t nptid; | |
5054 | ||
5055 | /* All (-1) threads of process. */ | |
ba348170 | 5056 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5057 | |
5058 | p += xsnprintf (p, endp - p, ":"); | |
5059 | p = write_ptid (p, endp, nptid); | |
5060 | } | |
5061 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5062 | { | |
5063 | p += xsnprintf (p, endp - p, ":"); | |
5064 | p = write_ptid (p, endp, ptid); | |
5065 | } | |
5066 | ||
5067 | return p; | |
5068 | } | |
5069 | ||
e5ef252a PA |
5070 | /* Append a vCont continue-with-signal action for threads that have a |
5071 | non-zero stop signal. */ | |
5072 | ||
5073 | static char * | |
5074 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5075 | { | |
5076 | struct thread_info *thread; | |
5077 | ||
034f788c | 5078 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5079 | if (ptid_match (thread->ptid, ptid) |
5080 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5081 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5082 | { |
5083 | p = append_resumption (p, endp, thread->ptid, | |
5084 | 0, thread->suspend.stop_signal); | |
5085 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
5086 | } | |
5087 | ||
5088 | return p; | |
5089 | } | |
5090 | ||
506fb367 DJ |
5091 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5092 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5093 | resumed thread should be single-stepped and/or signalled. If PTID |
5094 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5095 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5096 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5097 | |
506fb367 DJ |
5098 | This function issues a strict subset of all possible vCont commands at the |
5099 | moment. */ | |
44eaed12 | 5100 | |
506fb367 | 5101 | static int |
2ea28649 | 5102 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5103 | { |
5104 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5105 | char *p; |
5106 | char *endp; | |
44eaed12 | 5107 | |
4082afcc | 5108 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5109 | remote_vcont_probe (rs); |
44eaed12 | 5110 | |
4082afcc | 5111 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5112 | return 0; |
44eaed12 | 5113 | |
82f73884 PA |
5114 | p = rs->buf; |
5115 | endp = rs->buf + get_remote_packet_size (); | |
5116 | ||
506fb367 DJ |
5117 | /* If we could generate a wider range of packets, we'd have to worry |
5118 | about overflowing BUF. Should there be a generic | |
5119 | "multi-part-packet" packet? */ | |
5120 | ||
0d8f58ca PA |
5121 | p += xsnprintf (p, endp - p, "vCont"); |
5122 | ||
79d7f229 | 5123 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5124 | { |
79d7f229 PA |
5125 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5126 | so we don't have any TID numbers the inferior will | |
5127 | understand. Make sure to only send forms that do not specify | |
5128 | a TID. */ | |
a9cbf802 | 5129 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5130 | } |
0d8f58ca | 5131 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5132 | { |
0d8f58ca PA |
5133 | /* Resume all threads (of all processes, or of a single |
5134 | process), with preference for INFERIOR_PTID. This assumes | |
5135 | inferior_ptid belongs to the set of all threads we are about | |
5136 | to resume. */ | |
a493e3e2 | 5137 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5138 | { |
0d8f58ca PA |
5139 | /* Step inferior_ptid, with or without signal. */ |
5140 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5141 | } |
0d8f58ca | 5142 | |
e5ef252a PA |
5143 | /* Also pass down any pending signaled resumption for other |
5144 | threads not the current. */ | |
5145 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5146 | ||
0d8f58ca | 5147 | /* And continue others without a signal. */ |
a493e3e2 | 5148 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5149 | } |
5150 | else | |
506fb367 DJ |
5151 | { |
5152 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5153 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5154 | } |
c906108c | 5155 | |
82f73884 PA |
5156 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5157 | putpkt (rs->buf); | |
506fb367 | 5158 | |
74531fed PA |
5159 | if (non_stop) |
5160 | { | |
5161 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5162 | reply will be reported asynchronously by means of a `%Stop' | |
5163 | notification. */ | |
5164 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5165 | if (strcmp (rs->buf, "OK") != 0) | |
5166 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5167 | } | |
5168 | ||
506fb367 | 5169 | return 1; |
c906108c | 5170 | } |
43ff13b4 | 5171 | |
506fb367 DJ |
5172 | /* Tell the remote machine to resume. */ |
5173 | ||
43ff13b4 | 5174 | static void |
28439f5e | 5175 | remote_resume (struct target_ops *ops, |
2ea28649 | 5176 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5177 | { |
d01949b6 | 5178 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5179 | char *buf; |
43ff13b4 | 5180 | |
722247f1 YQ |
5181 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5182 | (explained in remote-notif.c:handle_notification) so | |
5183 | remote_notif_process is not called. We need find a place where | |
5184 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5185 | before resuming inferior, because inferior was stopped and no RSP | |
5186 | traffic at that moment. */ | |
5187 | if (!non_stop) | |
5965e028 | 5188 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5189 | |
b73be471 | 5190 | rs->last_sent_signal = siggnal; |
280ceea3 | 5191 | rs->last_sent_step = step; |
43ff13b4 | 5192 | |
506fb367 | 5193 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5194 | /* No reverse support (yet) for vCont. */ |
5195 | if (execution_direction != EXEC_REVERSE) | |
5196 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5197 | goto done; | |
506fb367 | 5198 | |
79d7f229 PA |
5199 | /* All other supported resume packets do use Hc, so set the continue |
5200 | thread. */ | |
5201 | if (ptid_equal (ptid, minus_one_ptid)) | |
5202 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5203 | else |
79d7f229 | 5204 | set_continue_thread (ptid); |
506fb367 | 5205 | |
2e9f7625 | 5206 | buf = rs->buf; |
b2175913 MS |
5207 | if (execution_direction == EXEC_REVERSE) |
5208 | { | |
5209 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5210 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5211 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5212 | siggnal); |
40ab02ce | 5213 | |
4082afcc | 5214 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5215 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5216 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5217 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5218 | |
b2175913 MS |
5219 | strcpy (buf, step ? "bs" : "bc"); |
5220 | } | |
a493e3e2 | 5221 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5222 | { |
5223 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5224 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5225 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5226 | buf[3] = '\0'; |
5227 | } | |
5228 | else | |
c5aa993b | 5229 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5230 | |
44eaed12 | 5231 | putpkt (buf); |
43ff13b4 | 5232 | |
75c99385 | 5233 | done: |
2acceee2 | 5234 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5235 | with the event loop. NOTE: this is the one place where all the |
5236 | execution commands end up. We could alternatively do this in each | |
23860348 | 5237 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5238 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5239 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5240 | NOT asynchronously. */ |
362646f5 | 5241 | if (target_can_async_p ()) |
6a3753b3 | 5242 | target_async (1); |
e24a49d8 PA |
5243 | |
5244 | /* We've just told the target to resume. The remote server will | |
5245 | wait for the inferior to stop, and then send a stop reply. In | |
5246 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5247 | because the stub wouldn't be ready to process it. This applies |
5248 | only to the base all-stop protocol, however. In non-stop (which | |
5249 | only supports vCont), the stub replies with an "OK", and is | |
5250 | immediate able to process further serial input. */ | |
5251 | if (!non_stop) | |
5252 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5253 | } |
c906108c | 5254 | \f |
43ff13b4 JM |
5255 | |
5256 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5257 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5258 | static void |
934b9bac | 5259 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5260 | { |
934b9bac | 5261 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5262 | } |
5263 | ||
23860348 | 5264 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5265 | static void |
934b9bac | 5266 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5267 | { |
934b9bac | 5268 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5269 | /* Note we need to go through gdb_call_async_signal_handler in order |
5270 | to wake up the event loop on Windows. */ | |
5271 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5272 | } |
5273 | ||
5274 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5275 | sent once. It will take effect the second time that the user sends | |
23860348 | 5276 | a ^C. */ |
43ff13b4 | 5277 | static void |
934b9bac | 5278 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5279 | { |
934b9bac | 5280 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5281 | /* See note in async_handle_remote_sigint. */ |
5282 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5283 | } |
5284 | ||
abc56d60 PA |
5285 | /* Implementation of to_check_pending_interrupt. */ |
5286 | ||
5287 | static void | |
5288 | remote_check_pending_interrupt (struct target_ops *self) | |
5289 | { | |
5290 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5291 | ||
5292 | if (async_signal_handler_is_marked (token)) | |
5293 | { | |
5294 | clear_async_signal_handler (token); | |
5295 | call_async_signal_handler (token); | |
5296 | } | |
5297 | } | |
5298 | ||
6426a772 | 5299 | /* Perform the real interruption of the target execution, in response |
23860348 | 5300 | to a ^C. */ |
c5aa993b | 5301 | static void |
fba45db2 | 5302 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5303 | { |
5304 | if (remote_debug) | |
248fd3bf | 5305 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5306 | |
94cc34af | 5307 | target_stop (inferior_ptid); |
43ff13b4 JM |
5308 | } |
5309 | ||
0df8b418 | 5310 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5311 | up on the target alltogether. */ |
47e1ce27 | 5312 | static void |
fba45db2 | 5313 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5314 | { |
2df3850c | 5315 | if (remote_debug) |
248fd3bf | 5316 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5317 | |
5318 | interrupt_query (); | |
43ff13b4 JM |
5319 | } |
5320 | ||
5321 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5322 | stopped. */ |
6426a772 | 5323 | static void |
934b9bac | 5324 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5325 | { |
5326 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5327 | } |
5328 | ||
c906108c SS |
5329 | /* Send ^C to target to halt it. Target will respond, and send us a |
5330 | packet. */ | |
507f3c78 | 5331 | static void (*ofunc) (int); |
c906108c | 5332 | |
bfedc46a PA |
5333 | /* The command line interface's interrupt routine. This function is installed |
5334 | as a signal handler for SIGINT. The first time a user requests an | |
5335 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5336 | response from the target (it didn't stop when the user requested it), |
23860348 | 5337 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5338 | |
c906108c | 5339 | static void |
934b9bac | 5340 | sync_remote_interrupt (int signo) |
c906108c | 5341 | { |
23860348 | 5342 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5343 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5344 | |
934b9bac | 5345 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5346 | } |
5347 | ||
5348 | /* The user typed ^C twice. */ | |
5349 | ||
5350 | static void | |
934b9bac | 5351 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5352 | { |
5353 | signal (signo, ofunc); | |
934b9bac JK |
5354 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5355 | signal (signo, sync_remote_interrupt); | |
c906108c | 5356 | } |
7a292a7a | 5357 | |
74531fed PA |
5358 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5359 | thread, all threads of a remote process, or all threads of all | |
5360 | processes. */ | |
5361 | ||
5362 | static void | |
5363 | remote_stop_ns (ptid_t ptid) | |
5364 | { | |
5365 | struct remote_state *rs = get_remote_state (); | |
5366 | char *p = rs->buf; | |
5367 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5368 | |
4082afcc | 5369 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5370 | remote_vcont_probe (rs); |
5371 | ||
d458bd84 | 5372 | if (!rs->supports_vCont.t) |
74531fed PA |
5373 | error (_("Remote server does not support stopping threads")); |
5374 | ||
f91d3df5 PA |
5375 | if (ptid_equal (ptid, minus_one_ptid) |
5376 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5377 | p += xsnprintf (p, endp - p, "vCont;t"); |
5378 | else | |
5379 | { | |
5380 | ptid_t nptid; | |
5381 | ||
74531fed PA |
5382 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5383 | ||
5384 | if (ptid_is_pid (ptid)) | |
5385 | /* All (-1) threads of process. */ | |
ba348170 | 5386 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5387 | else |
5388 | { | |
5389 | /* Small optimization: if we already have a stop reply for | |
5390 | this thread, no use in telling the stub we want this | |
5391 | stopped. */ | |
5392 | if (peek_stop_reply (ptid)) | |
5393 | return; | |
5394 | ||
5395 | nptid = ptid; | |
5396 | } | |
5397 | ||
a9cbf802 | 5398 | write_ptid (p, endp, nptid); |
74531fed PA |
5399 | } |
5400 | ||
5401 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5402 | come in asynchronously by notification. */ | |
5403 | putpkt (rs->buf); | |
5404 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5405 | if (strcmp (rs->buf, "OK") != 0) | |
5406 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5407 | } | |
5408 | ||
bfedc46a PA |
5409 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5410 | interrupt the remote target. It is undefined which thread of which | |
5411 | process reports the interrupt. */ | |
74531fed PA |
5412 | |
5413 | static void | |
bfedc46a | 5414 | remote_interrupt_as (ptid_t ptid) |
74531fed PA |
5415 | { |
5416 | struct remote_state *rs = get_remote_state (); | |
5417 | ||
3a29589a DJ |
5418 | rs->ctrlc_pending_p = 1; |
5419 | ||
74531fed PA |
5420 | /* If the inferior is stopped already, but the core didn't know |
5421 | about it yet, just ignore the request. The cached wait status | |
5422 | will be collected in remote_wait. */ | |
5423 | if (rs->cached_wait_status) | |
5424 | return; | |
5425 | ||
9a7071a8 JB |
5426 | /* Send interrupt_sequence to remote target. */ |
5427 | send_interrupt_sequence (); | |
74531fed PA |
5428 | } |
5429 | ||
bfedc46a | 5430 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5431 | |
c906108c | 5432 | static void |
1eab8a48 | 5433 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5434 | { |
7a292a7a | 5435 | if (remote_debug) |
0f71a2f6 | 5436 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5437 | |
74531fed PA |
5438 | if (non_stop) |
5439 | remote_stop_ns (ptid); | |
c906108c | 5440 | else |
bfedc46a PA |
5441 | { |
5442 | /* We don't currently have a way to transparently pause the | |
5443 | remote target in all-stop mode. Interrupt it instead. */ | |
5444 | remote_interrupt_as (ptid); | |
5445 | } | |
5446 | } | |
5447 | ||
5448 | /* Implement the to_interrupt function for the remote targets. */ | |
5449 | ||
5450 | static void | |
5451 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5452 | { | |
5453 | if (remote_debug) | |
5454 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5455 | ||
5456 | if (non_stop) | |
5457 | { | |
5458 | /* We don't currently have a way to ^C the remote target in | |
5459 | non-stop mode. Stop it (with no signal) instead. */ | |
5460 | remote_stop_ns (ptid); | |
5461 | } | |
5462 | else | |
5463 | remote_interrupt_as (ptid); | |
c906108c SS |
5464 | } |
5465 | ||
5466 | /* Ask the user what to do when an interrupt is received. */ | |
5467 | ||
5468 | static void | |
fba45db2 | 5469 | interrupt_query (void) |
c906108c | 5470 | { |
abc56d60 PA |
5471 | struct remote_state *rs = get_remote_state (); |
5472 | struct cleanup *old_chain; | |
5473 | ||
5474 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5475 | target_terminal_ours (); |
5476 | ||
abc56d60 | 5477 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5478 | { |
abc56d60 PA |
5479 | if (query (_("The target is not responding to interrupt requests.\n" |
5480 | "Stop debugging it? "))) | |
74531fed | 5481 | { |
78a095c3 | 5482 | remote_unpush_target (); |
abc56d60 | 5483 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5484 | } |
5485 | } | |
abc56d60 PA |
5486 | else |
5487 | { | |
5488 | if (query (_("Interrupted while waiting for the program.\n" | |
5489 | "Give up waiting? "))) | |
5490 | quit (); | |
5491 | } | |
c906108c | 5492 | |
abc56d60 | 5493 | do_cleanups (old_chain); |
c906108c SS |
5494 | } |
5495 | ||
6426a772 JM |
5496 | /* Enable/disable target terminal ownership. Most targets can use |
5497 | terminal groups to control terminal ownership. Remote targets are | |
5498 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5499 | is required. */ |
6426a772 JM |
5500 | |
5501 | static void | |
d2f640d4 | 5502 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5503 | { |
c6ebd6cf | 5504 | if (!target_async_permitted) |
75c99385 PA |
5505 | /* Nothing to do. */ |
5506 | return; | |
5507 | ||
d9d2d8b6 PA |
5508 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5509 | idempotent. The event-loop GDB talking to an asynchronous target | |
5510 | with a synchronous command calls this function from both | |
5511 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5512 | transfer the terminal to the target when it shouldn't this guard | |
5513 | can go away. */ | |
6426a772 JM |
5514 | if (!remote_async_terminal_ours_p) |
5515 | return; | |
5516 | delete_file_handler (input_fd); | |
5517 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5518 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5519 | /* NOTE: At this point we could also register our selves as the |
5520 | recipient of all input. Any characters typed could then be | |
23860348 | 5521 | passed on down to the target. */ |
6426a772 JM |
5522 | } |
5523 | ||
5524 | static void | |
e3594fd1 | 5525 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5526 | { |
c6ebd6cf | 5527 | if (!target_async_permitted) |
75c99385 PA |
5528 | /* Nothing to do. */ |
5529 | return; | |
5530 | ||
5531 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5532 | if (remote_async_terminal_ours_p) |
5533 | return; | |
934b9bac | 5534 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5535 | add_file_handler (input_fd, stdin_event_handler, 0); |
5536 | remote_async_terminal_ours_p = 1; | |
5537 | } | |
5538 | ||
176a6961 | 5539 | static void |
917317f4 | 5540 | remote_console_output (char *msg) |
c906108c SS |
5541 | { |
5542 | char *p; | |
5543 | ||
c5aa993b | 5544 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5545 | { |
5546 | char tb[2]; | |
5547 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5548 | |
c906108c SS |
5549 | tb[0] = c; |
5550 | tb[1] = 0; | |
43ff13b4 | 5551 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5552 | } |
00db5b94 PA |
5553 | gdb_flush (gdb_stdtarg); |
5554 | } | |
74531fed PA |
5555 | |
5556 | typedef struct cached_reg | |
5557 | { | |
5558 | int num; | |
5559 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5560 | } cached_reg_t; | |
5561 | ||
5562 | DEF_VEC_O(cached_reg_t); | |
5563 | ||
722247f1 | 5564 | typedef struct stop_reply |
74531fed | 5565 | { |
722247f1 | 5566 | struct notif_event base; |
74531fed | 5567 | |
722247f1 | 5568 | /* The identifier of the thread about this event */ |
74531fed PA |
5569 | ptid_t ptid; |
5570 | ||
340e3c99 | 5571 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5572 | connection, represented by a remote_state object, is closed, |
5573 | all the associated stop_reply events should be released. */ | |
5574 | struct remote_state *rs; | |
5575 | ||
74531fed PA |
5576 | struct target_waitstatus ws; |
5577 | ||
15148d6a PA |
5578 | /* Expedited registers. This makes remote debugging a bit more |
5579 | efficient for those targets that provide critical registers as | |
5580 | part of their normal status mechanism (as another roundtrip to | |
5581 | fetch them is avoided). */ | |
74531fed PA |
5582 | VEC(cached_reg_t) *regcache; |
5583 | ||
f7e6eed5 PA |
5584 | enum target_stop_reason stop_reason; |
5585 | ||
74531fed PA |
5586 | CORE_ADDR watch_data_address; |
5587 | ||
dc146f7c | 5588 | int core; |
722247f1 | 5589 | } *stop_reply_p; |
a744cf53 | 5590 | |
722247f1 YQ |
5591 | DECLARE_QUEUE_P (stop_reply_p); |
5592 | DEFINE_QUEUE_P (stop_reply_p); | |
5593 | /* The list of already fetched and acknowledged stop events. This | |
5594 | queue is used for notification Stop, and other notifications | |
5595 | don't need queue for their events, because the notification events | |
5596 | of Stop can't be consumed immediately, so that events should be | |
5597 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5598 | time. Other notifications can consume their events immediately, | |
5599 | so queue is not needed for them. */ | |
5600 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5601 | |
5602 | static void | |
5603 | stop_reply_xfree (struct stop_reply *r) | |
5604 | { | |
f48ff2a7 | 5605 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5606 | } |
5607 | ||
221e1a37 PA |
5608 | /* Return the length of the stop reply queue. */ |
5609 | ||
5610 | static int | |
5611 | stop_reply_queue_length (void) | |
5612 | { | |
5613 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
5614 | } | |
5615 | ||
722247f1 YQ |
5616 | static void |
5617 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5618 | struct notif_event *event) | |
5619 | { | |
5620 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5621 | } | |
5622 | ||
5623 | static void | |
5624 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5625 | struct notif_event *event) | |
5626 | { | |
5627 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5628 | ||
5629 | /* acknowledge */ | |
5630 | putpkt ((char *) self->ack_command); | |
5631 | ||
5632 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5633 | /* We got an unknown stop reply. */ | |
5634 | error (_("Unknown stop reply")); | |
5635 | ||
5636 | push_stop_reply (stop_reply); | |
5637 | } | |
5638 | ||
5639 | static int | |
5640 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5641 | { | |
5642 | /* We can't get pending events in remote_notif_process for | |
5643 | notification stop, and we have to do this in remote_wait_ns | |
5644 | instead. If we fetch all queued events from stub, remote stub | |
5645 | may exit and we have no chance to process them back in | |
5646 | remote_wait_ns. */ | |
5647 | mark_async_event_handler (remote_async_inferior_event_token); | |
5648 | return 0; | |
5649 | } | |
5650 | ||
5651 | static void | |
5652 | stop_reply_dtr (struct notif_event *event) | |
5653 | { | |
5654 | struct stop_reply *r = (struct stop_reply *) event; | |
5655 | ||
5656 | VEC_free (cached_reg_t, r->regcache); | |
5657 | } | |
5658 | ||
5659 | static struct notif_event * | |
5660 | remote_notif_stop_alloc_reply (void) | |
5661 | { | |
8d749320 SM |
5662 | /* We cast to a pointer to the "base class". */ |
5663 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
5664 | |
5665 | r->dtr = stop_reply_dtr; | |
5666 | ||
5667 | return r; | |
5668 | } | |
5669 | ||
5670 | /* A client of notification Stop. */ | |
5671 | ||
5672 | struct notif_client notif_client_stop = | |
5673 | { | |
5674 | "Stop", | |
5675 | "vStopped", | |
5676 | remote_notif_stop_parse, | |
5677 | remote_notif_stop_ack, | |
5678 | remote_notif_stop_can_get_pending_events, | |
5679 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5680 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5681 | }; |
5682 | ||
5683 | /* A parameter to pass data in and out. */ | |
5684 | ||
5685 | struct queue_iter_param | |
5686 | { | |
5687 | void *input; | |
5688 | struct stop_reply *output; | |
5689 | }; | |
5690 | ||
cbb8991c DB |
5691 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5692 | the pid of the process that owns the threads we want to check, or | |
5693 | -1 if we want to check all threads. */ | |
5694 | ||
5695 | static int | |
5696 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5697 | ptid_t thread_ptid) | |
5698 | { | |
5699 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5700 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5701 | { | |
5702 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5703 | return 1; | |
5704 | } | |
5705 | ||
5706 | return 0; | |
5707 | } | |
5708 | ||
5709 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5710 | fork child from the context list passed in DATA. */ | |
5711 | ||
5712 | static int | |
5713 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5714 | QUEUE_ITER (stop_reply_p) *iter, | |
5715 | stop_reply_p event, | |
5716 | void *data) | |
5717 | { | |
5718 | struct queue_iter_param *param = data; | |
5719 | struct threads_listing_context *context = param->input; | |
5720 | ||
5721 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5722 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5723 | { | |
5724 | threads_listing_context_remove (&event->ws, context); | |
5725 | } | |
5726 | ||
5727 | return 1; | |
5728 | } | |
5729 | ||
5730 | /* If CONTEXT contains any fork child threads that have not been | |
5731 | reported yet, remove them from the CONTEXT list. If such a | |
5732 | thread exists it is because we are stopped at a fork catchpoint | |
5733 | and have not yet called follow_fork, which will set up the | |
5734 | host-side data structures for the new process. */ | |
5735 | ||
5736 | static void | |
5737 | remove_new_fork_children (struct threads_listing_context *context) | |
5738 | { | |
5739 | struct thread_info * thread; | |
5740 | int pid = -1; | |
5741 | struct notif_client *notif = ¬if_client_stop; | |
5742 | struct queue_iter_param param; | |
5743 | ||
5744 | /* For any threads stopped at a fork event, remove the corresponding | |
5745 | fork child threads from the CONTEXT list. */ | |
5746 | ALL_NON_EXITED_THREADS (thread) | |
5747 | { | |
5748 | struct target_waitstatus *ws = &thread->pending_follow; | |
5749 | ||
5750 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5751 | { | |
5752 | threads_listing_context_remove (ws, context); | |
5753 | } | |
5754 | } | |
5755 | ||
5756 | /* Check for any pending fork events (not reported or processed yet) | |
5757 | in process PID and remove those fork child threads from the | |
5758 | CONTEXT list as well. */ | |
5759 | remote_notif_get_pending_events (notif); | |
5760 | param.input = context; | |
5761 | param.output = NULL; | |
5762 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5763 | remove_child_of_pending_fork, ¶m); | |
5764 | } | |
5765 | ||
f48ff2a7 YQ |
5766 | /* Remove stop replies in the queue if its pid is equal to the given |
5767 | inferior's pid. */ | |
722247f1 YQ |
5768 | |
5769 | static int | |
f48ff2a7 YQ |
5770 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5771 | QUEUE_ITER (stop_reply_p) *iter, | |
5772 | stop_reply_p event, | |
5773 | void *data) | |
722247f1 YQ |
5774 | { |
5775 | struct queue_iter_param *param = data; | |
5776 | struct inferior *inf = param->input; | |
5777 | ||
f48ff2a7 | 5778 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5779 | { |
5780 | stop_reply_xfree (event); | |
5781 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5782 | } | |
5783 | ||
5784 | return 1; | |
5785 | } | |
5786 | ||
f48ff2a7 | 5787 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5788 | |
74531fed | 5789 | static void |
5f4cf0bb | 5790 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5791 | { |
722247f1 YQ |
5792 | int i; |
5793 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5794 | struct stop_reply *reply; |
5795 | struct remote_state *rs = get_remote_state (); | |
5796 | struct remote_notif_state *rns = rs->notif_state; | |
5797 | ||
5798 | /* This function can be notified when an inferior exists. When the | |
5799 | target is not remote, the notification state is NULL. */ | |
5800 | if (rs->remote_desc == NULL) | |
5801 | return; | |
5802 | ||
5803 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5804 | |
74531fed | 5805 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5806 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5807 | { |
722247f1 | 5808 | stop_reply_xfree (reply); |
f48ff2a7 | 5809 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5810 | } |
c906108c | 5811 | |
722247f1 YQ |
5812 | param.input = inf; |
5813 | param.output = NULL; | |
74531fed PA |
5814 | /* Discard the stop replies we have already pulled with |
5815 | vStopped. */ | |
722247f1 | 5816 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5817 | remove_stop_reply_for_inferior, ¶m); |
5818 | } | |
5819 | ||
bcc75809 YQ |
5820 | /* If its remote state is equal to the given remote state, |
5821 | remove EVENT from the stop reply queue. */ | |
5822 | ||
5823 | static int | |
5824 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5825 | QUEUE_ITER (stop_reply_p) *iter, | |
5826 | stop_reply_p event, | |
5827 | void *data) | |
5828 | { | |
5829 | struct queue_iter_param *param = data; | |
5830 | struct remote_state *rs = param->input; | |
5831 | ||
5832 | if (event->rs == rs) | |
5833 | { | |
5834 | stop_reply_xfree (event); | |
5835 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5836 | } | |
5837 | ||
5838 | return 1; | |
5839 | } | |
5840 | ||
5841 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5842 | |
5843 | static void | |
bcc75809 | 5844 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5845 | { |
5846 | struct queue_iter_param param; | |
5847 | ||
bcc75809 | 5848 | param.input = rs; |
f48ff2a7 YQ |
5849 | param.output = NULL; |
5850 | /* Discard the stop replies we have already pulled with | |
5851 | vStopped. */ | |
5852 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5853 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5854 | } |
74531fed | 5855 | |
722247f1 YQ |
5856 | /* A parameter to pass data in and out. */ |
5857 | ||
5858 | static int | |
5859 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5860 | QUEUE_ITER (stop_reply_p) *iter, | |
5861 | stop_reply_p event, | |
5862 | void *data) | |
5863 | { | |
5864 | struct queue_iter_param *param = data; | |
5865 | ptid_t *ptid = param->input; | |
5866 | ||
5867 | if (ptid_match (event->ptid, *ptid)) | |
5868 | { | |
5869 | param->output = event; | |
5870 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5871 | return 0; | |
c8e38a49 | 5872 | } |
722247f1 YQ |
5873 | |
5874 | return 1; | |
74531fed | 5875 | } |
43ff13b4 | 5876 | |
722247f1 YQ |
5877 | /* Remove the first reply in 'stop_reply_queue' which matches |
5878 | PTID. */ | |
2e9f7625 | 5879 | |
722247f1 YQ |
5880 | static struct stop_reply * |
5881 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5882 | { |
722247f1 YQ |
5883 | struct queue_iter_param param; |
5884 | ||
5885 | param.input = &ptid; | |
5886 | param.output = NULL; | |
5887 | ||
5888 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5889 | remote_notif_remove_once_on_match, ¶m); | |
5890 | if (notif_debug) | |
5891 | fprintf_unfiltered (gdb_stdlog, | |
5892 | "notif: discard queued event: 'Stop' in %s\n", | |
5893 | target_pid_to_str (ptid)); | |
a744cf53 | 5894 | |
722247f1 | 5895 | return param.output; |
74531fed | 5896 | } |
75c99385 | 5897 | |
74531fed PA |
5898 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5899 | remove it from the queue, and return it. Returns NULL if none is | |
5900 | found. If there are still queued events left to process, tell the | |
5901 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5902 | |
74531fed PA |
5903 | static struct stop_reply * |
5904 | queued_stop_reply (ptid_t ptid) | |
5905 | { | |
722247f1 | 5906 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5907 | |
722247f1 | 5908 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5909 | /* There's still at least an event left. */ |
5910 | mark_async_event_handler (remote_async_inferior_event_token); | |
5911 | ||
722247f1 | 5912 | return r; |
74531fed PA |
5913 | } |
5914 | ||
5915 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5916 | know that we now have at least one queued event left to pass to the | |
5917 | core side, tell the event loop to get back to target_wait soon. */ | |
5918 | ||
5919 | static void | |
5920 | push_stop_reply (struct stop_reply *new_event) | |
5921 | { | |
722247f1 | 5922 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5923 | |
722247f1 YQ |
5924 | if (notif_debug) |
5925 | fprintf_unfiltered (gdb_stdlog, | |
5926 | "notif: push 'Stop' %s to queue %d\n", | |
5927 | target_pid_to_str (new_event->ptid), | |
5928 | QUEUE_length (stop_reply_p, | |
5929 | stop_reply_queue)); | |
74531fed PA |
5930 | |
5931 | mark_async_event_handler (remote_async_inferior_event_token); | |
5932 | } | |
5933 | ||
722247f1 YQ |
5934 | static int |
5935 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5936 | QUEUE_ITER (stop_reply_p) *iter, | |
5937 | struct stop_reply *event, | |
5938 | void *data) | |
5939 | { | |
5940 | ptid_t *ptid = data; | |
5941 | ||
5942 | return !(ptid_equal (*ptid, event->ptid) | |
5943 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5944 | } | |
5945 | ||
74531fed PA |
5946 | /* Returns true if we have a stop reply for PTID. */ |
5947 | ||
5948 | static int | |
5949 | peek_stop_reply (ptid_t ptid) | |
5950 | { | |
722247f1 YQ |
5951 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5952 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5953 | } |
5954 | ||
1f10ba14 PA |
5955 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5956 | ||
5957 | static char * | |
5958 | skip_to_semicolon (char *p) | |
5959 | { | |
5960 | while (*p != '\0' && *p != ';') | |
5961 | p++; | |
5962 | return p; | |
5963 | } | |
5964 | ||
26d56a93 SL |
5965 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
5966 | starting with P and ending with PEND matches PREFIX. */ | |
5967 | ||
5968 | static int | |
5969 | strprefix (const char *p, const char *pend, const char *prefix) | |
5970 | { | |
5971 | for ( ; p < pend; p++, prefix++) | |
5972 | if (*p != *prefix) | |
5973 | return 0; | |
5974 | return *prefix == '\0'; | |
5975 | } | |
5976 | ||
74531fed PA |
5977 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5978 | result is stored in EVENT, or throws an error. */ | |
5979 | ||
5980 | static void | |
5981 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5982 | { | |
5983 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5984 | ULONGEST addr; | |
5985 | char *p; | |
5986 | ||
5987 | event->ptid = null_ptid; | |
bcc75809 | 5988 | event->rs = get_remote_state (); |
74531fed PA |
5989 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5990 | event->ws.value.integer = 0; | |
f7e6eed5 | 5991 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 5992 | event->regcache = NULL; |
dc146f7c | 5993 | event->core = -1; |
74531fed PA |
5994 | |
5995 | switch (buf[0]) | |
5996 | { | |
5997 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5998 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5999 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6000 | ss = signal number | |
6001 | n... = register number | |
6002 | r... = register contents | |
6003 | */ | |
6004 | ||
6005 | p = &buf[3]; /* after Txx */ | |
6006 | while (*p) | |
6007 | { | |
6008 | char *p1; | |
cea39f65 | 6009 | int fieldsize; |
43ff13b4 | 6010 | |
1f10ba14 PA |
6011 | p1 = strchr (p, ':'); |
6012 | if (p1 == NULL) | |
6013 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6014 | Packet: '%s'\n"), | |
6015 | p, buf); | |
6016 | if (p == p1) | |
6017 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6018 | Packet: '%s'\n"), | |
6019 | p, buf); | |
3c3bea1c | 6020 | |
1f10ba14 PA |
6021 | /* Some "registers" are actually extended stop information. |
6022 | Note if you're adding a new entry here: GDB 7.9 and | |
6023 | earlier assume that all register "numbers" that start | |
6024 | with an hex digit are real register numbers. Make sure | |
6025 | the server only sends such a packet if it knows the | |
6026 | client understands it. */ | |
c8e38a49 | 6027 | |
26d56a93 | 6028 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6029 | event->ptid = read_ptid (++p1, &p); |
26d56a93 SL |
6030 | else if (strprefix (p, p1, "watch") |
6031 | || strprefix (p, p1, "rwatch") | |
6032 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6033 | { |
f7e6eed5 | 6034 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6035 | p = unpack_varlen_hex (++p1, &addr); |
6036 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6037 | } |
26d56a93 | 6038 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6039 | { |
6040 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6041 | ||
6042 | /* Make sure the stub doesn't forget to indicate support | |
6043 | with qSupported. */ | |
6044 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6045 | error (_("Unexpected swbreak stop reason")); | |
6046 | ||
6047 | /* The value part is documented as "must be empty", | |
6048 | though we ignore it, in case we ever decide to make | |
6049 | use of it in a backward compatible way. */ | |
6050 | p = skip_to_semicolon (p1 + 1); | |
6051 | } | |
26d56a93 | 6052 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6053 | { |
6054 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6055 | ||
6056 | /* Make sure the stub doesn't forget to indicate support | |
6057 | with qSupported. */ | |
6058 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6059 | error (_("Unexpected hwbreak stop reason")); | |
6060 | ||
6061 | /* See above. */ | |
6062 | p = skip_to_semicolon (p1 + 1); | |
6063 | } | |
26d56a93 | 6064 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6065 | { |
1f10ba14 PA |
6066 | event->ws.kind = TARGET_WAITKIND_LOADED; |
6067 | p = skip_to_semicolon (p1 + 1); | |
6068 | } | |
26d56a93 | 6069 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6070 | { |
6071 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6072 | /* p1 will indicate "begin" or "end", but it makes | |
6073 | no difference for now, so ignore it. */ | |
6074 | p = skip_to_semicolon (p1 + 1); | |
6075 | } | |
26d56a93 | 6076 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6077 | { |
6078 | ULONGEST c; | |
a744cf53 | 6079 | |
1f10ba14 PA |
6080 | p = unpack_varlen_hex (++p1, &c); |
6081 | event->core = c; | |
cea39f65 | 6082 | } |
26d56a93 | 6083 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6084 | { |
6085 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6086 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6087 | } | |
26d56a93 | 6088 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6089 | { |
6090 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6091 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6092 | } | |
26d56a93 | 6093 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6094 | { |
6095 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
6096 | p = skip_to_semicolon (p1 + 1); | |
6097 | } | |
cea39f65 MS |
6098 | else |
6099 | { | |
1f10ba14 PA |
6100 | ULONGEST pnum; |
6101 | char *p_temp; | |
6102 | ||
6103 | /* Maybe a real ``P'' register number. */ | |
6104 | p_temp = unpack_varlen_hex (p, &pnum); | |
6105 | /* If the first invalid character is the colon, we got a | |
6106 | register number. Otherwise, it's an unknown stop | |
6107 | reason. */ | |
6108 | if (p_temp == p1) | |
6109 | { | |
6110 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6111 | cached_reg_t cached_reg; | |
43ff13b4 | 6112 | |
1f10ba14 PA |
6113 | if (reg == NULL) |
6114 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6115 | Packet: '%s'\n"), |
1f10ba14 | 6116 | hex_string (pnum), p, buf); |
c8e38a49 | 6117 | |
1f10ba14 | 6118 | cached_reg.num = reg->regnum; |
4100683b | 6119 | |
1f10ba14 PA |
6120 | p = p1 + 1; |
6121 | fieldsize = hex2bin (p, cached_reg.data, | |
6122 | register_size (target_gdbarch (), | |
6123 | reg->regnum)); | |
6124 | p += 2 * fieldsize; | |
6125 | if (fieldsize < register_size (target_gdbarch (), | |
6126 | reg->regnum)) | |
6127 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6128 | |
1f10ba14 PA |
6129 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6130 | } | |
6131 | else | |
6132 | { | |
6133 | /* Not a number. Silently skip unknown optional | |
6134 | info. */ | |
6135 | p = skip_to_semicolon (p1 + 1); | |
6136 | } | |
cea39f65 | 6137 | } |
c8e38a49 | 6138 | |
cea39f65 MS |
6139 | if (*p != ';') |
6140 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6141 | buf, p); | |
6142 | ++p; | |
6143 | } | |
5b5596ff PA |
6144 | |
6145 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6146 | break; | |
6147 | ||
c8e38a49 PA |
6148 | /* fall through */ |
6149 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6150 | { |
6151 | int sig; | |
6152 | ||
6153 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6154 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6155 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6156 | event->ws.value.sig = (enum gdb_signal) sig; | |
6157 | else | |
6158 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6159 | } | |
c8e38a49 PA |
6160 | break; |
6161 | case 'W': /* Target exited. */ | |
6162 | case 'X': | |
6163 | { | |
6164 | char *p; | |
6165 | int pid; | |
6166 | ULONGEST value; | |
82f73884 | 6167 | |
c8e38a49 PA |
6168 | /* GDB used to accept only 2 hex chars here. Stubs should |
6169 | only send more if they detect GDB supports multi-process | |
6170 | support. */ | |
6171 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6172 | |
c8e38a49 PA |
6173 | if (buf[0] == 'W') |
6174 | { | |
6175 | /* The remote process exited. */ | |
74531fed PA |
6176 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6177 | event->ws.value.integer = value; | |
c8e38a49 PA |
6178 | } |
6179 | else | |
6180 | { | |
6181 | /* The remote process exited with a signal. */ | |
74531fed | 6182 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6183 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6184 | event->ws.value.sig = (enum gdb_signal) value; | |
6185 | else | |
6186 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6187 | } |
82f73884 | 6188 | |
c8e38a49 PA |
6189 | /* If no process is specified, assume inferior_ptid. */ |
6190 | pid = ptid_get_pid (inferior_ptid); | |
6191 | if (*p == '\0') | |
6192 | ; | |
6193 | else if (*p == ';') | |
6194 | { | |
6195 | p++; | |
6196 | ||
0b24eb2d | 6197 | if (*p == '\0') |
82f73884 | 6198 | ; |
61012eef | 6199 | else if (startswith (p, "process:")) |
82f73884 | 6200 | { |
c8e38a49 | 6201 | ULONGEST upid; |
a744cf53 | 6202 | |
c8e38a49 PA |
6203 | p += sizeof ("process:") - 1; |
6204 | unpack_varlen_hex (p, &upid); | |
6205 | pid = upid; | |
82f73884 PA |
6206 | } |
6207 | else | |
6208 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6209 | } |
c8e38a49 PA |
6210 | else |
6211 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6212 | event->ptid = pid_to_ptid (pid); |
6213 | } | |
6214 | break; | |
6215 | } | |
6216 | ||
6217 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6218 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6219 | } | |
6220 | ||
722247f1 YQ |
6221 | /* When the stub wants to tell GDB about a new notification reply, it |
6222 | sends a notification (%Stop, for example). Those can come it at | |
6223 | any time, hence, we have to make sure that any pending | |
6224 | putpkt/getpkt sequence we're making is finished, before querying | |
6225 | the stub for more events with the corresponding ack command | |
6226 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6227 | immediately upon receiving the notification, something like this | |
6228 | could happen: | |
74531fed PA |
6229 | |
6230 | 1.1) --> Hg 1 | |
6231 | 1.2) <-- OK | |
6232 | 1.3) --> g | |
6233 | 1.4) <-- %Stop | |
6234 | 1.5) --> vStopped | |
6235 | 1.6) <-- (registers reply to step #1.3) | |
6236 | ||
6237 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6238 | query. | |
6239 | ||
796cb314 | 6240 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6241 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6242 | doing whatever we were doing: | |
6243 | ||
6244 | 2.1) --> Hg 1 | |
6245 | 2.2) <-- OK | |
6246 | 2.3) --> g | |
6247 | 2.4) <-- %Stop | |
6248 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6249 | 2.5) <-- (registers reply to step #2.3) | |
6250 | ||
6251 | Eventualy after step #2.5, we return to the event loop, which | |
6252 | notices there's an event on the | |
6253 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6254 | associated callback --- the function below. At this point, we're | |
6255 | always safe to start a vStopped sequence. : | |
6256 | ||
6257 | 2.6) --> vStopped | |
6258 | 2.7) <-- T05 thread:2 | |
6259 | 2.8) --> vStopped | |
6260 | 2.9) --> OK | |
6261 | */ | |
6262 | ||
722247f1 YQ |
6263 | void |
6264 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6265 | { |
6266 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6267 | |
f48ff2a7 | 6268 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6269 | { |
722247f1 YQ |
6270 | if (notif_debug) |
6271 | fprintf_unfiltered (gdb_stdlog, | |
6272 | "notif: process: '%s' ack pending event\n", | |
6273 | nc->name); | |
74531fed | 6274 | |
722247f1 | 6275 | /* acknowledge */ |
f48ff2a7 YQ |
6276 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6277 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6278 | |
6279 | while (1) | |
6280 | { | |
6281 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6282 | if (strcmp (rs->buf, "OK") == 0) | |
6283 | break; | |
6284 | else | |
722247f1 | 6285 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6286 | } |
6287 | } | |
722247f1 YQ |
6288 | else |
6289 | { | |
6290 | if (notif_debug) | |
6291 | fprintf_unfiltered (gdb_stdlog, | |
6292 | "notif: process: '%s' no pending reply\n", | |
6293 | nc->name); | |
6294 | } | |
74531fed PA |
6295 | } |
6296 | ||
74531fed PA |
6297 | /* Called when it is decided that STOP_REPLY holds the info of the |
6298 | event that is to be returned to the core. This function always | |
6299 | destroys STOP_REPLY. */ | |
6300 | ||
6301 | static ptid_t | |
6302 | process_stop_reply (struct stop_reply *stop_reply, | |
6303 | struct target_waitstatus *status) | |
6304 | { | |
6305 | ptid_t ptid; | |
6306 | ||
6307 | *status = stop_reply->ws; | |
6308 | ptid = stop_reply->ptid; | |
6309 | ||
6310 | /* If no thread/process was reported by the stub, assume the current | |
6311 | inferior. */ | |
6312 | if (ptid_equal (ptid, null_ptid)) | |
6313 | ptid = inferior_ptid; | |
6314 | ||
5f3563ea PA |
6315 | if (status->kind != TARGET_WAITKIND_EXITED |
6316 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6317 | { |
ee154bee TT |
6318 | struct remote_state *rs = get_remote_state (); |
6319 | ||
5f3563ea PA |
6320 | /* Expedited registers. */ |
6321 | if (stop_reply->regcache) | |
6322 | { | |
217f1f79 | 6323 | struct regcache *regcache |
f5656ead | 6324 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6325 | cached_reg_t *reg; |
6326 | int ix; | |
6327 | ||
6328 | for (ix = 0; | |
6329 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6330 | ix++) | |
217f1f79 | 6331 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6332 | VEC_free (cached_reg_t, stop_reply->regcache); |
6333 | } | |
74531fed | 6334 | |
f7e6eed5 | 6335 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 6336 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
6337 | |
6338 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 6339 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
6340 | } |
6341 | ||
74531fed PA |
6342 | stop_reply_xfree (stop_reply); |
6343 | return ptid; | |
6344 | } | |
6345 | ||
6346 | /* The non-stop mode version of target_wait. */ | |
6347 | ||
6348 | static ptid_t | |
47608cb1 | 6349 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6350 | { |
6351 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6352 | struct stop_reply *stop_reply; |
6353 | int ret; | |
fee9eda9 | 6354 | int is_notif = 0; |
74531fed PA |
6355 | |
6356 | /* If in non-stop mode, get out of getpkt even if a | |
6357 | notification is received. */ | |
6358 | ||
6359 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6360 | 0 /* forever */, &is_notif); |
74531fed PA |
6361 | while (1) |
6362 | { | |
fee9eda9 | 6363 | if (ret != -1 && !is_notif) |
74531fed PA |
6364 | switch (rs->buf[0]) |
6365 | { | |
6366 | case 'E': /* Error of some sort. */ | |
6367 | /* We're out of sync with the target now. Did it continue | |
6368 | or not? We can't tell which thread it was in non-stop, | |
6369 | so just ignore this. */ | |
6370 | warning (_("Remote failure reply: %s"), rs->buf); | |
6371 | break; | |
6372 | case 'O': /* Console output. */ | |
6373 | remote_console_output (rs->buf + 1); | |
6374 | break; | |
6375 | default: | |
6376 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6377 | break; | |
6378 | } | |
6379 | ||
6380 | /* Acknowledge a pending stop reply that may have arrived in the | |
6381 | mean time. */ | |
f48ff2a7 | 6382 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6383 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6384 | |
6385 | /* If indeed we noticed a stop reply, we're done. */ | |
6386 | stop_reply = queued_stop_reply (ptid); | |
6387 | if (stop_reply != NULL) | |
6388 | return process_stop_reply (stop_reply, status); | |
6389 | ||
47608cb1 | 6390 | /* Still no event. If we're just polling for an event, then |
74531fed | 6391 | return to the event loop. */ |
47608cb1 | 6392 | if (options & TARGET_WNOHANG) |
74531fed PA |
6393 | { |
6394 | status->kind = TARGET_WAITKIND_IGNORE; | |
6395 | return minus_one_ptid; | |
6396 | } | |
6397 | ||
47608cb1 | 6398 | /* Otherwise do a blocking wait. */ |
74531fed | 6399 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6400 | 1 /* forever */, &is_notif); |
74531fed PA |
6401 | } |
6402 | } | |
6403 | ||
6404 | /* Wait until the remote machine stops, then return, storing status in | |
6405 | STATUS just as `wait' would. */ | |
6406 | ||
6407 | static ptid_t | |
47608cb1 | 6408 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6409 | { |
6410 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6411 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6412 | char *buf; |
74531fed PA |
6413 | struct stop_reply *stop_reply; |
6414 | ||
47608cb1 PA |
6415 | again: |
6416 | ||
74531fed PA |
6417 | status->kind = TARGET_WAITKIND_IGNORE; |
6418 | status->value.integer = 0; | |
6419 | ||
6420 | stop_reply = queued_stop_reply (ptid); | |
6421 | if (stop_reply != NULL) | |
6422 | return process_stop_reply (stop_reply, status); | |
6423 | ||
6424 | if (rs->cached_wait_status) | |
6425 | /* Use the cached wait status, but only once. */ | |
6426 | rs->cached_wait_status = 0; | |
6427 | else | |
6428 | { | |
6429 | int ret; | |
722247f1 | 6430 | int is_notif; |
567420d1 PA |
6431 | int forever = ((options & TARGET_WNOHANG) == 0 |
6432 | && wait_forever_enabled_p); | |
6433 | ||
6434 | if (!rs->waiting_for_stop_reply) | |
6435 | { | |
6436 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6437 | return minus_one_ptid; | |
6438 | } | |
74531fed PA |
6439 | |
6440 | if (!target_is_async_p ()) | |
6441 | { | |
934b9bac | 6442 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6443 | /* If the user hit C-c before this packet, or between packets, |
6444 | pretend that it was hit right here. */ | |
522002f9 | 6445 | if (check_quit_flag ()) |
74531fed | 6446 | { |
522002f9 | 6447 | clear_quit_flag (); |
934b9bac | 6448 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6449 | } |
6450 | } | |
6451 | ||
6452 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6453 | _never_ wait for ever -> test on target_is_async_p(). | |
6454 | However, before we do that we need to ensure that the caller | |
6455 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6456 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6457 | forever, &is_notif); |
722247f1 | 6458 | |
5e1b953b SDJ |
6459 | if (!target_is_async_p ()) |
6460 | signal (SIGINT, ofunc); | |
6461 | ||
722247f1 YQ |
6462 | /* GDB gets a notification. Return to core as this event is |
6463 | not interesting. */ | |
6464 | if (ret != -1 && is_notif) | |
6465 | return minus_one_ptid; | |
567420d1 PA |
6466 | |
6467 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6468 | return minus_one_ptid; | |
74531fed PA |
6469 | } |
6470 | ||
6471 | buf = rs->buf; | |
6472 | ||
f7e6eed5 | 6473 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6474 | |
6475 | /* We got something. */ | |
6476 | rs->waiting_for_stop_reply = 0; | |
6477 | ||
3a29589a DJ |
6478 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6479 | an 'F' or 'O' packet. */ | |
6480 | if (buf[0] != 'F' && buf[0] != 'O') | |
6481 | rs->ctrlc_pending_p = 0; | |
6482 | ||
74531fed PA |
6483 | switch (buf[0]) |
6484 | { | |
6485 | case 'E': /* Error of some sort. */ | |
6486 | /* We're out of sync with the target now. Did it continue or | |
6487 | not? Not is more likely, so report a stop. */ | |
6488 | warning (_("Remote failure reply: %s"), buf); | |
6489 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6490 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6491 | break; |
6492 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6493 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6494 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6495 | break; |
6496 | case 'T': case 'S': case 'X': case 'W': | |
6497 | { | |
722247f1 YQ |
6498 | struct stop_reply *stop_reply |
6499 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6500 | rs->buf); | |
74531fed | 6501 | |
74531fed | 6502 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6503 | break; |
6504 | } | |
6505 | case 'O': /* Console output. */ | |
6506 | remote_console_output (buf + 1); | |
e24a49d8 | 6507 | |
c8e38a49 PA |
6508 | /* The target didn't really stop; keep waiting. */ |
6509 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6510 | |
c8e38a49 PA |
6511 | break; |
6512 | case '\0': | |
b73be471 | 6513 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6514 | { |
6515 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6516 | remote system doesn't support it. */ | |
6517 | target_terminal_ours_for_output (); | |
6518 | printf_filtered | |
6519 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6520 | gdb_signal_to_name (rs->last_sent_signal)); |
6521 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6522 | target_terminal_inferior (); |
6523 | ||
280ceea3 | 6524 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6525 | putpkt ((char *) buf); |
6526 | ||
6527 | /* We just told the target to resume, so a stop reply is in | |
6528 | order. */ | |
e24a49d8 | 6529 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6530 | break; |
43ff13b4 | 6531 | } |
c8e38a49 PA |
6532 | /* else fallthrough */ |
6533 | default: | |
6534 | warning (_("Invalid remote reply: %s"), buf); | |
6535 | /* Keep waiting. */ | |
6536 | rs->waiting_for_stop_reply = 1; | |
6537 | break; | |
43ff13b4 | 6538 | } |
c8e38a49 | 6539 | |
c8e38a49 | 6540 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6541 | { |
6542 | /* Nothing interesting happened. If we're doing a non-blocking | |
6543 | poll, we're done. Otherwise, go back to waiting. */ | |
6544 | if (options & TARGET_WNOHANG) | |
6545 | return minus_one_ptid; | |
6546 | else | |
6547 | goto again; | |
6548 | } | |
74531fed PA |
6549 | else if (status->kind != TARGET_WAITKIND_EXITED |
6550 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6551 | { |
6552 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6553 | record_currthread (rs, event_ptid); |
82f73884 PA |
6554 | else |
6555 | event_ptid = inferior_ptid; | |
43ff13b4 | 6556 | } |
74531fed PA |
6557 | else |
6558 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6559 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6560 | |
82f73884 | 6561 | return event_ptid; |
43ff13b4 JM |
6562 | } |
6563 | ||
74531fed PA |
6564 | /* Wait until the remote machine stops, then return, storing status in |
6565 | STATUS just as `wait' would. */ | |
6566 | ||
c8e38a49 | 6567 | static ptid_t |
117de6a9 | 6568 | remote_wait (struct target_ops *ops, |
47608cb1 | 6569 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6570 | { |
6571 | ptid_t event_ptid; | |
6572 | ||
74531fed | 6573 | if (non_stop) |
47608cb1 | 6574 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6575 | else |
47608cb1 | 6576 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6577 | |
d9d41e78 | 6578 | if (target_is_async_p ()) |
c8e38a49 | 6579 | { |
74531fed PA |
6580 | /* If there are are events left in the queue tell the event loop |
6581 | to return here. */ | |
722247f1 | 6582 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6583 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6584 | } |
c8e38a49 PA |
6585 | |
6586 | return event_ptid; | |
6587 | } | |
6588 | ||
74ca34ce | 6589 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6590 | |
b96ec7ac | 6591 | static int |
56be3814 | 6592 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6593 | { |
6594 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6595 | char *buf, *p; |
b96ec7ac AC |
6596 | char regp[MAX_REGISTER_SIZE]; |
6597 | int i; | |
6598 | ||
4082afcc | 6599 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6600 | return 0; |
6601 | ||
6602 | if (reg->pnum == -1) | |
6603 | return 0; | |
6604 | ||
2e9f7625 | 6605 | p = rs->buf; |
fcad0fa4 | 6606 | *p++ = 'p'; |
74ca34ce | 6607 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6608 | *p++ = '\0'; |
1f4437a4 MS |
6609 | putpkt (rs->buf); |
6610 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6611 | |
2e9f7625 DJ |
6612 | buf = rs->buf; |
6613 | ||
74ca34ce DJ |
6614 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6615 | { | |
6616 | case PACKET_OK: | |
6617 | break; | |
6618 | case PACKET_UNKNOWN: | |
6619 | return 0; | |
6620 | case PACKET_ERROR: | |
27a9c0bf MS |
6621 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6622 | gdbarch_register_name (get_regcache_arch (regcache), | |
6623 | reg->regnum), | |
6624 | buf); | |
74ca34ce | 6625 | } |
3f9a994c JB |
6626 | |
6627 | /* If this register is unfetchable, tell the regcache. */ | |
6628 | if (buf[0] == 'x') | |
8480adf2 | 6629 | { |
56be3814 | 6630 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6631 | return 1; |
b96ec7ac | 6632 | } |
b96ec7ac | 6633 | |
3f9a994c JB |
6634 | /* Otherwise, parse and supply the value. */ |
6635 | p = buf; | |
6636 | i = 0; | |
6637 | while (p[0] != 0) | |
6638 | { | |
6639 | if (p[1] == 0) | |
74ca34ce | 6640 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6641 | |
6642 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6643 | p += 2; | |
6644 | } | |
56be3814 | 6645 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6646 | return 1; |
b96ec7ac AC |
6647 | } |
6648 | ||
74ca34ce DJ |
6649 | /* Fetch the registers included in the target's 'g' packet. */ |
6650 | ||
29709017 DJ |
6651 | static int |
6652 | send_g_packet (void) | |
c906108c | 6653 | { |
d01949b6 | 6654 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6655 | int buf_len; |
c906108c | 6656 | |
bba74b36 | 6657 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6658 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6659 | |
29709017 DJ |
6660 | /* We can get out of synch in various cases. If the first character |
6661 | in the buffer is not a hex character, assume that has happened | |
6662 | and try to fetch another packet to read. */ | |
6663 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6664 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6665 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6666 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6667 | { | |
6668 | if (remote_debug) | |
6669 | fprintf_unfiltered (gdb_stdlog, | |
6670 | "Bad register packet; fetching a new packet\n"); | |
6671 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6672 | } | |
6673 | ||
74ca34ce DJ |
6674 | buf_len = strlen (rs->buf); |
6675 | ||
6676 | /* Sanity check the received packet. */ | |
6677 | if (buf_len % 2 != 0) | |
6678 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6679 | |
6680 | return buf_len / 2; | |
6681 | } | |
6682 | ||
6683 | static void | |
56be3814 | 6684 | process_g_packet (struct regcache *regcache) |
29709017 | 6685 | { |
4a22f64d | 6686 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6687 | struct remote_state *rs = get_remote_state (); |
6688 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6689 | int i, buf_len; | |
6690 | char *p; | |
6691 | char *regs; | |
6692 | ||
6693 | buf_len = strlen (rs->buf); | |
6694 | ||
6695 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6696 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6697 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6698 | ||
6699 | /* Save the size of the packet sent to us by the target. It is used | |
6700 | as a heuristic when determining the max size of packets that the | |
6701 | target can safely receive. */ | |
6702 | if (rsa->actual_register_packet_size == 0) | |
6703 | rsa->actual_register_packet_size = buf_len; | |
6704 | ||
6705 | /* If this is smaller than we guessed the 'g' packet would be, | |
6706 | update our records. A 'g' reply that doesn't include a register's | |
6707 | value implies either that the register is not available, or that | |
6708 | the 'p' packet must be used. */ | |
6709 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6710 | { |
74ca34ce DJ |
6711 | rsa->sizeof_g_packet = buf_len / 2; |
6712 | ||
4a22f64d | 6713 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6714 | { |
74ca34ce DJ |
6715 | if (rsa->regs[i].pnum == -1) |
6716 | continue; | |
6717 | ||
6718 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6719 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6720 | else |
74ca34ce | 6721 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6722 | } |
74ca34ce | 6723 | } |
b323314b | 6724 | |
74ca34ce | 6725 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6726 | |
6727 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6728 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6729 | |
c906108c SS |
6730 | /* Reply describes registers byte by byte, each byte encoded as two |
6731 | hex characters. Suck them all up, then supply them to the | |
6732 | register cacheing/storage mechanism. */ | |
6733 | ||
74ca34ce | 6734 | p = rs->buf; |
ea9c271d | 6735 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6736 | { |
74ca34ce DJ |
6737 | if (p[0] == 0 || p[1] == 0) |
6738 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6739 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6740 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6741 | |
c906108c | 6742 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6743 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6744 | else |
6745 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6746 | p += 2; | |
6747 | } | |
6748 | ||
a744cf53 MS |
6749 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6750 | { | |
6751 | struct packet_reg *r = &rsa->regs[i]; | |
6752 | ||
6753 | if (r->in_g_packet) | |
6754 | { | |
6755 | if (r->offset * 2 >= strlen (rs->buf)) | |
6756 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6757 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6758 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6759 | else if (rs->buf[r->offset * 2] == 'x') |
6760 | { | |
6761 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6762 | /* The register isn't available, mark it as such (at | |
6763 | the same time setting the value to zero). */ | |
6764 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6765 | } | |
6766 | else | |
6767 | regcache_raw_supply (regcache, r->regnum, | |
6768 | regs + r->offset); | |
6769 | } | |
6770 | } | |
c906108c SS |
6771 | } |
6772 | ||
29709017 | 6773 | static void |
56be3814 | 6774 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6775 | { |
6776 | send_g_packet (); | |
56be3814 | 6777 | process_g_packet (regcache); |
29709017 DJ |
6778 | } |
6779 | ||
e6e4e701 PA |
6780 | /* Make the remote selected traceframe match GDB's selected |
6781 | traceframe. */ | |
6782 | ||
6783 | static void | |
6784 | set_remote_traceframe (void) | |
6785 | { | |
6786 | int newnum; | |
262e1174 | 6787 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6788 | |
262e1174 | 6789 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6790 | return; |
6791 | ||
6792 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6793 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6794 | |
6795 | newnum = target_trace_find (tfind_number, | |
6796 | get_traceframe_number (), 0, 0, NULL); | |
6797 | ||
6798 | /* Should not happen. If it does, all bets are off. */ | |
6799 | if (newnum != get_traceframe_number ()) | |
6800 | warning (_("could not set remote traceframe")); | |
6801 | } | |
6802 | ||
74ca34ce | 6803 | static void |
28439f5e PA |
6804 | remote_fetch_registers (struct target_ops *ops, |
6805 | struct regcache *regcache, int regnum) | |
74ca34ce | 6806 | { |
74ca34ce DJ |
6807 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6808 | int i; | |
6809 | ||
e6e4e701 | 6810 | set_remote_traceframe (); |
79d7f229 | 6811 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6812 | |
6813 | if (regnum >= 0) | |
6814 | { | |
6815 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6816 | |
74ca34ce DJ |
6817 | gdb_assert (reg != NULL); |
6818 | ||
6819 | /* If this register might be in the 'g' packet, try that first - | |
6820 | we are likely to read more than one register. If this is the | |
6821 | first 'g' packet, we might be overly optimistic about its | |
6822 | contents, so fall back to 'p'. */ | |
6823 | if (reg->in_g_packet) | |
6824 | { | |
56be3814 | 6825 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6826 | if (reg->in_g_packet) |
6827 | return; | |
6828 | } | |
6829 | ||
56be3814 | 6830 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6831 | return; |
6832 | ||
6833 | /* This register is not available. */ | |
56be3814 | 6834 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6835 | |
6836 | return; | |
6837 | } | |
6838 | ||
56be3814 | 6839 | fetch_registers_using_g (regcache); |
74ca34ce | 6840 | |
4a22f64d | 6841 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6842 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6843 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6844 | { |
6845 | /* This register is not available. */ | |
56be3814 | 6846 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6847 | } |
6848 | } | |
6849 | ||
c906108c SS |
6850 | /* Prepare to store registers. Since we may send them all (using a |
6851 | 'G' request), we have to read out the ones we don't want to change | |
6852 | first. */ | |
6853 | ||
c5aa993b | 6854 | static void |
f32dbf8c | 6855 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6856 | { |
ea9c271d | 6857 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6858 | int i; |
cfd77fa1 | 6859 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6860 | |
c906108c | 6861 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6862 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6863 | { |
6864 | case PACKET_DISABLE: | |
6865 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6866 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6867 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6868 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6869 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6870 | break; |
6871 | case PACKET_ENABLE: | |
6872 | break; | |
6873 | } | |
6874 | } | |
6875 | ||
ad10f812 | 6876 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6877 | packet was not recognized. */ |
5a2468f5 JM |
6878 | |
6879 | static int | |
1f4437a4 MS |
6880 | store_register_using_P (const struct regcache *regcache, |
6881 | struct packet_reg *reg) | |
5a2468f5 | 6882 | { |
4a22f64d | 6883 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6884 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6885 | /* Try storing a single register. */ |
6d820c5c | 6886 | char *buf = rs->buf; |
cfd77fa1 | 6887 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6888 | char *p; |
5a2468f5 | 6889 | |
4082afcc | 6890 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6891 | return 0; |
6892 | ||
6893 | if (reg->pnum == -1) | |
6894 | return 0; | |
6895 | ||
ea9c271d | 6896 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6897 | p = buf + strlen (buf); |
56be3814 | 6898 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6899 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6900 | putpkt (rs->buf); |
6901 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6902 | |
74ca34ce DJ |
6903 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6904 | { | |
6905 | case PACKET_OK: | |
6906 | return 1; | |
6907 | case PACKET_ERROR: | |
27a9c0bf MS |
6908 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6909 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6910 | case PACKET_UNKNOWN: |
6911 | return 0; | |
6912 | default: | |
6913 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6914 | } | |
c906108c SS |
6915 | } |
6916 | ||
23860348 MS |
6917 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6918 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6919 | |
6920 | static void | |
56be3814 | 6921 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6922 | { |
d01949b6 | 6923 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6924 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6925 | gdb_byte *regs; |
c906108c SS |
6926 | char *p; |
6927 | ||
193cb69f AC |
6928 | /* Extract all the registers in the regcache copying them into a |
6929 | local buffer. */ | |
6930 | { | |
b323314b | 6931 | int i; |
a744cf53 | 6932 | |
ea9c271d DJ |
6933 | regs = alloca (rsa->sizeof_g_packet); |
6934 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6935 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6936 | { |
ea9c271d | 6937 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6938 | |
b323314b | 6939 | if (r->in_g_packet) |
56be3814 | 6940 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6941 | } |
6942 | } | |
c906108c SS |
6943 | |
6944 | /* Command describes registers byte by byte, | |
6945 | each byte encoded as two hex characters. */ | |
6d820c5c | 6946 | p = rs->buf; |
193cb69f | 6947 | *p++ = 'G'; |
74ca34ce DJ |
6948 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6949 | updated. */ | |
6950 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6951 | putpkt (rs->buf); |
6952 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6953 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6954 | error (_("Could not write registers; remote failure reply '%s'"), |
6955 | rs->buf); | |
c906108c | 6956 | } |
74ca34ce DJ |
6957 | |
6958 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6959 | of the register cache buffer. FIXME: ignores errors. */ | |
6960 | ||
6961 | static void | |
28439f5e PA |
6962 | remote_store_registers (struct target_ops *ops, |
6963 | struct regcache *regcache, int regnum) | |
74ca34ce | 6964 | { |
74ca34ce DJ |
6965 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6966 | int i; | |
6967 | ||
e6e4e701 | 6968 | set_remote_traceframe (); |
79d7f229 | 6969 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6970 | |
6971 | if (regnum >= 0) | |
6972 | { | |
6973 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6974 | |
74ca34ce DJ |
6975 | gdb_assert (reg != NULL); |
6976 | ||
6977 | /* Always prefer to store registers using the 'P' packet if | |
6978 | possible; we often change only a small number of registers. | |
6979 | Sometimes we change a larger number; we'd need help from a | |
6980 | higher layer to know to use 'G'. */ | |
56be3814 | 6981 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6982 | return; |
6983 | ||
6984 | /* For now, don't complain if we have no way to write the | |
6985 | register. GDB loses track of unavailable registers too | |
6986 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6987 | any way to read the register, either... */ |
74ca34ce DJ |
6988 | if (!reg->in_g_packet) |
6989 | return; | |
6990 | ||
56be3814 | 6991 | store_registers_using_G (regcache); |
74ca34ce DJ |
6992 | return; |
6993 | } | |
6994 | ||
56be3814 | 6995 | store_registers_using_G (regcache); |
74ca34ce | 6996 | |
4a22f64d | 6997 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6998 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6999 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7000 | /* See above for why we do not issue an error here. */ |
7001 | continue; | |
7002 | } | |
c906108c SS |
7003 | \f |
7004 | ||
7005 | /* Return the number of hex digits in num. */ | |
7006 | ||
7007 | static int | |
fba45db2 | 7008 | hexnumlen (ULONGEST num) |
c906108c SS |
7009 | { |
7010 | int i; | |
7011 | ||
7012 | for (i = 0; num != 0; i++) | |
7013 | num >>= 4; | |
7014 | ||
7015 | return max (i, 1); | |
7016 | } | |
7017 | ||
2df3850c | 7018 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7019 | |
7020 | static int | |
fba45db2 | 7021 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7022 | { |
c906108c | 7023 | int len = hexnumlen (num); |
a744cf53 | 7024 | |
2df3850c JM |
7025 | return hexnumnstr (buf, num, len); |
7026 | } | |
7027 | ||
c906108c | 7028 | |
2df3850c | 7029 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7030 | |
2df3850c | 7031 | static int |
fba45db2 | 7032 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7033 | { |
7034 | int i; | |
7035 | ||
7036 | buf[width] = '\0'; | |
7037 | ||
7038 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7039 | { |
c5aa993b | 7040 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7041 | num >>= 4; |
7042 | } | |
7043 | ||
2df3850c | 7044 | return width; |
c906108c SS |
7045 | } |
7046 | ||
23860348 | 7047 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7048 | |
7049 | static CORE_ADDR | |
fba45db2 | 7050 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7051 | { |
883b9c6c | 7052 | unsigned int address_size = remote_address_size; |
a744cf53 | 7053 | |
911c95a5 UW |
7054 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7055 | if (!address_size) | |
f5656ead | 7056 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7057 | |
7058 | if (address_size > 0 | |
7059 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7060 | { |
7061 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7062 | in a ULONGEST variable. */ |
c906108c | 7063 | ULONGEST mask = 1; |
a744cf53 | 7064 | |
911c95a5 | 7065 | mask = (mask << address_size) - 1; |
c906108c SS |
7066 | addr &= mask; |
7067 | } | |
7068 | return addr; | |
7069 | } | |
7070 | ||
7071 | /* Determine whether the remote target supports binary downloading. | |
7072 | This is accomplished by sending a no-op memory write of zero length | |
7073 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7074 | the whole packet, since many stubs strip the eighth bit and |
7075 | subsequently compute a wrong checksum, which causes real havoc with | |
7076 | remote_write_bytes. | |
7a292a7a | 7077 | |
96baa820 | 7078 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7079 | clean. In cases like this, the user should clear "remote |
23860348 | 7080 | X-packet". */ |
96baa820 | 7081 | |
c906108c | 7082 | static void |
fba45db2 | 7083 | check_binary_download (CORE_ADDR addr) |
c906108c | 7084 | { |
d01949b6 | 7085 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7086 | |
4082afcc | 7087 | switch (packet_support (PACKET_X)) |
c906108c | 7088 | { |
96baa820 JM |
7089 | case PACKET_DISABLE: |
7090 | break; | |
7091 | case PACKET_ENABLE: | |
7092 | break; | |
7093 | case PACKET_SUPPORT_UNKNOWN: | |
7094 | { | |
96baa820 | 7095 | char *p; |
802188a7 | 7096 | |
2e9f7625 | 7097 | p = rs->buf; |
96baa820 JM |
7098 | *p++ = 'X'; |
7099 | p += hexnumstr (p, (ULONGEST) addr); | |
7100 | *p++ = ','; | |
7101 | p += hexnumstr (p, (ULONGEST) 0); | |
7102 | *p++ = ':'; | |
7103 | *p = '\0'; | |
802188a7 | 7104 | |
2e9f7625 | 7105 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7106 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7107 | |
2e9f7625 | 7108 | if (rs->buf[0] == '\0') |
96baa820 JM |
7109 | { |
7110 | if (remote_debug) | |
7111 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7112 | "binary downloading NOT " |
7113 | "supported by target\n"); | |
444abaca | 7114 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7115 | } |
7116 | else | |
7117 | { | |
7118 | if (remote_debug) | |
7119 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7120 | "binary downloading supported by target\n"); |
444abaca | 7121 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7122 | } |
7123 | break; | |
7124 | } | |
c906108c SS |
7125 | } |
7126 | } | |
7127 | ||
124e13d9 SM |
7128 | /* Helper function to resize the payload in order to try to get a good |
7129 | alignment. We try to write an amount of data such that the next write will | |
7130 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7131 | ||
7132 | static int | |
7133 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7134 | { | |
7135 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7136 | } | |
7137 | ||
c906108c SS |
7138 | /* Write memory data directly to the remote machine. |
7139 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7140 | HEADER is the starting part of the packet. |
c906108c SS |
7141 | MEMADDR is the address in the remote memory space. |
7142 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7143 | LEN_UNITS is the number of addressable units to write. |
7144 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7145 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7146 | should send data as binary ('X'), or hex-encoded ('M'). | |
7147 | ||
7148 | The function creates packet of the form | |
7149 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7150 | ||
124e13d9 | 7151 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7152 | |
7153 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7154 | are omitted. | |
7155 | ||
9b409511 | 7156 | Return the transferred status, error or OK (an |
124e13d9 SM |
7157 | 'enum target_xfer_status' value). Save the number of addressable units |
7158 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7159 | ||
7160 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7161 | exchange between gdb and the stub could look like (?? in place of the | |
7162 | checksum): | |
7163 | ||
7164 | -> $m1000,4#?? | |
7165 | <- aaaabbbbccccdddd | |
7166 | ||
7167 | -> $M1000,3:eeeeffffeeee#?? | |
7168 | <- OK | |
7169 | ||
7170 | -> $m1000,4#?? | |
7171 | <- eeeeffffeeeedddd */ | |
c906108c | 7172 | |
9b409511 | 7173 | static enum target_xfer_status |
a76d924d | 7174 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7175 | const gdb_byte *myaddr, ULONGEST len_units, |
7176 | int unit_size, ULONGEST *xfered_len_units, | |
7177 | char packet_format, int use_length) | |
c906108c | 7178 | { |
6d820c5c | 7179 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7180 | char *p; |
a76d924d DJ |
7181 | char *plen = NULL; |
7182 | int plenlen = 0; | |
124e13d9 SM |
7183 | int todo_units; |
7184 | int units_written; | |
7185 | int payload_capacity_bytes; | |
7186 | int payload_length_bytes; | |
a76d924d DJ |
7187 | |
7188 | if (packet_format != 'X' && packet_format != 'M') | |
7189 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7190 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7191 | |
124e13d9 | 7192 | if (len_units == 0) |
9b409511 | 7193 | return TARGET_XFER_EOF; |
b2182ed2 | 7194 | |
124e13d9 | 7195 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7196 | |
6d820c5c DJ |
7197 | /* The packet buffer will be large enough for the payload; |
7198 | get_memory_packet_size ensures this. */ | |
a76d924d | 7199 | rs->buf[0] = '\0'; |
c906108c | 7200 | |
a257b5bb | 7201 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7202 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7203 | ||
124e13d9 | 7204 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7205 | if (!use_length) |
0df8b418 | 7206 | /* The comma won't be used. */ |
124e13d9 SM |
7207 | payload_capacity_bytes += 1; |
7208 | payload_capacity_bytes -= strlen (header); | |
7209 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7210 | |
a76d924d | 7211 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7212 | |
a76d924d DJ |
7213 | strcat (rs->buf, header); |
7214 | p = rs->buf + strlen (header); | |
7215 | ||
7216 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7217 | if (packet_format == 'X') | |
c906108c | 7218 | { |
23860348 | 7219 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7220 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7221 | if (use_length) |
124e13d9 SM |
7222 | payload_capacity_bytes -= hexnumlen (todo_units); |
7223 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7224 | } |
7225 | else | |
7226 | { | |
124e13d9 SM |
7227 | /* Number of bytes that will fit. */ |
7228 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7229 | if (use_length) |
124e13d9 SM |
7230 | payload_capacity_bytes -= hexnumlen (todo_units); |
7231 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7232 | } |
a76d924d | 7233 | |
124e13d9 | 7234 | if (todo_units <= 0) |
3de11b2e | 7235 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7236 | _("minimum packet size too small to write data")); |
802188a7 | 7237 | |
6765f3e5 DJ |
7238 | /* If we already need another packet, then try to align the end |
7239 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7240 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7241 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7242 | |
a257b5bb | 7243 | /* Append "<memaddr>". */ |
917317f4 JM |
7244 | memaddr = remote_address_masked (memaddr); |
7245 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7246 | |
a76d924d DJ |
7247 | if (use_length) |
7248 | { | |
7249 | /* Append ",". */ | |
7250 | *p++ = ','; | |
802188a7 | 7251 | |
124e13d9 SM |
7252 | /* Append the length and retain its location and size. It may need to be |
7253 | adjusted once the packet body has been created. */ | |
a76d924d | 7254 | plen = p; |
124e13d9 | 7255 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7256 | p += plenlen; |
7257 | } | |
a257b5bb AC |
7258 | |
7259 | /* Append ":". */ | |
917317f4 JM |
7260 | *p++ = ':'; |
7261 | *p = '\0'; | |
802188a7 | 7262 | |
a257b5bb | 7263 | /* Append the packet body. */ |
a76d924d | 7264 | if (packet_format == 'X') |
917317f4 | 7265 | { |
917317f4 JM |
7266 | /* Binary mode. Send target system values byte by byte, in |
7267 | increasing byte addresses. Only escape certain critical | |
7268 | characters. */ | |
124e13d9 SM |
7269 | payload_length_bytes = |
7270 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7271 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7272 | |
124e13d9 | 7273 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7274 | a second try to keep the end of the packet aligned. Don't do |
7275 | this if the packet is tiny. */ | |
124e13d9 | 7276 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7277 | { |
124e13d9 SM |
7278 | int new_todo_units; |
7279 | ||
7280 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7281 | ||
7282 | if (new_todo_units != units_written) | |
7283 | payload_length_bytes = | |
7284 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7285 | (gdb_byte *) p, &units_written, | |
7286 | payload_capacity_bytes); | |
6765f3e5 DJ |
7287 | } |
7288 | ||
124e13d9 SM |
7289 | p += payload_length_bytes; |
7290 | if (use_length && units_written < todo_units) | |
c906108c | 7291 | { |
802188a7 | 7292 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7293 | and we have actually sent fewer units than planned. |
917317f4 JM |
7294 | Fix-up the length field of the packet. Use the same |
7295 | number of characters as before. */ | |
124e13d9 SM |
7296 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7297 | plenlen); | |
917317f4 | 7298 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7299 | } |
a76d924d DJ |
7300 | } |
7301 | else | |
7302 | { | |
917317f4 JM |
7303 | /* Normal mode: Send target system values byte by byte, in |
7304 | increasing byte addresses. Each byte is encoded as a two hex | |
7305 | value. */ | |
124e13d9 SM |
7306 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7307 | units_written = todo_units; | |
c906108c | 7308 | } |
802188a7 | 7309 | |
2e9f7625 | 7310 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7311 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7312 | |
2e9f7625 | 7313 | if (rs->buf[0] == 'E') |
00d84524 | 7314 | return TARGET_XFER_E_IO; |
802188a7 | 7315 | |
124e13d9 SM |
7316 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7317 | send fewer units than we'd planned. */ | |
7318 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7319 | return TARGET_XFER_OK; |
c906108c SS |
7320 | } |
7321 | ||
a76d924d DJ |
7322 | /* Write memory data directly to the remote machine. |
7323 | This does not inform the data cache; the data cache uses this. | |
7324 | MEMADDR is the address in the remote memory space. | |
7325 | MYADDR is the address of the buffer in our space. | |
7326 | LEN is the number of bytes. | |
7327 | ||
9b409511 YQ |
7328 | Return the transferred status, error or OK (an |
7329 | 'enum target_xfer_status' value). Save the number of bytes | |
7330 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7331 | |
9b409511 YQ |
7332 | static enum target_xfer_status |
7333 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7334 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7335 | { |
7336 | char *packet_format = 0; | |
7337 | ||
7338 | /* Check whether the target supports binary download. */ | |
7339 | check_binary_download (memaddr); | |
7340 | ||
4082afcc | 7341 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7342 | { |
7343 | case PACKET_ENABLE: | |
7344 | packet_format = "X"; | |
7345 | break; | |
7346 | case PACKET_DISABLE: | |
7347 | packet_format = "M"; | |
7348 | break; | |
7349 | case PACKET_SUPPORT_UNKNOWN: | |
7350 | internal_error (__FILE__, __LINE__, | |
7351 | _("remote_write_bytes: bad internal state")); | |
7352 | default: | |
7353 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7354 | } | |
7355 | ||
7356 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7357 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7358 | packet_format[0], 1); |
a76d924d DJ |
7359 | } |
7360 | ||
9217e74e YQ |
7361 | /* Read memory data directly from the remote machine. |
7362 | This does not use the data cache; the data cache uses this. | |
7363 | MEMADDR is the address in the remote memory space. | |
7364 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7365 | LEN_UNITS is the number of addressable memory units to read.. |
7366 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7367 | |
7368 | Return the transferred status, error or OK (an | |
7369 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7370 | transferred in *XFERED_LEN_UNITS. |
7371 | ||
7372 | See the comment of remote_write_bytes_aux for an example of | |
7373 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7374 | |
7375 | static enum target_xfer_status | |
124e13d9 SM |
7376 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7377 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7378 | { |
7379 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7380 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7381 | char *p; |
124e13d9 SM |
7382 | int todo_units; |
7383 | int decoded_bytes; | |
9217e74e | 7384 | |
124e13d9 | 7385 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7386 | /* The packet buffer will be large enough for the payload; |
7387 | get_memory_packet_size ensures this. */ | |
7388 | ||
124e13d9 SM |
7389 | /* Number of units that will fit. */ |
7390 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7391 | |
7392 | /* Construct "m"<memaddr>","<len>". */ | |
7393 | memaddr = remote_address_masked (memaddr); | |
7394 | p = rs->buf; | |
7395 | *p++ = 'm'; | |
7396 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7397 | *p++ = ','; | |
124e13d9 | 7398 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7399 | *p = '\0'; |
7400 | putpkt (rs->buf); | |
7401 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7402 | if (rs->buf[0] == 'E' | |
7403 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7404 | && rs->buf[3] == '\0') | |
7405 | return TARGET_XFER_E_IO; | |
7406 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7407 | characters. */ | |
7408 | p = rs->buf; | |
124e13d9 | 7409 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7410 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7411 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7412 | return TARGET_XFER_OK; |
7413 | } | |
7414 | ||
b55fbac4 YQ |
7415 | /* Using the set of read-only target sections of remote, read live |
7416 | read-only memory. | |
8acf9577 YQ |
7417 | |
7418 | For interface/parameters/return description see target.h, | |
7419 | to_xfer_partial. */ | |
7420 | ||
7421 | static enum target_xfer_status | |
b55fbac4 YQ |
7422 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7423 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7424 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7425 | { |
7426 | struct target_section *secp; | |
7427 | struct target_section_table *table; | |
7428 | ||
7429 | secp = target_section_by_addr (ops, memaddr); | |
7430 | if (secp != NULL | |
7431 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7432 | secp->the_bfd_section) | |
7433 | & SEC_READONLY)) | |
7434 | { | |
7435 | struct target_section *p; | |
7436 | ULONGEST memend = memaddr + len; | |
7437 | ||
7438 | table = target_get_section_table (ops); | |
7439 | ||
7440 | for (p = table->sections; p < table->sections_end; p++) | |
7441 | { | |
7442 | if (memaddr >= p->addr) | |
7443 | { | |
7444 | if (memend <= p->endaddr) | |
7445 | { | |
7446 | /* Entire transfer is within this section. */ | |
124e13d9 | 7447 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7448 | xfered_len); |
8acf9577 YQ |
7449 | } |
7450 | else if (memaddr >= p->endaddr) | |
7451 | { | |
7452 | /* This section ends before the transfer starts. */ | |
7453 | continue; | |
7454 | } | |
7455 | else | |
7456 | { | |
7457 | /* This section overlaps the transfer. Just do half. */ | |
7458 | len = p->endaddr - memaddr; | |
124e13d9 | 7459 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7460 | xfered_len); |
8acf9577 YQ |
7461 | } |
7462 | } | |
7463 | } | |
7464 | } | |
7465 | ||
7466 | return TARGET_XFER_EOF; | |
7467 | } | |
7468 | ||
9217e74e YQ |
7469 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7470 | first if the requested memory is unavailable in traceframe. | |
7471 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7472 | |
9b409511 | 7473 | static enum target_xfer_status |
8acf9577 | 7474 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7475 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7476 | ULONGEST *xfered_len) | |
c906108c | 7477 | { |
6b6aa828 | 7478 | if (len == 0) |
96c4f946 | 7479 | return TARGET_XFER_EOF; |
b2182ed2 | 7480 | |
8acf9577 YQ |
7481 | if (get_traceframe_number () != -1) |
7482 | { | |
7483 | VEC(mem_range_s) *available; | |
7484 | ||
7485 | /* If we fail to get the set of available memory, then the | |
7486 | target does not support querying traceframe info, and so we | |
7487 | attempt reading from the traceframe anyway (assuming the | |
7488 | target implements the old QTro packet then). */ | |
7489 | if (traceframe_available_memory (&available, memaddr, len)) | |
7490 | { | |
7491 | struct cleanup *old_chain; | |
7492 | ||
7493 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7494 | ||
7495 | if (VEC_empty (mem_range_s, available) | |
7496 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7497 | { | |
7498 | enum target_xfer_status res; | |
7499 | ||
7500 | /* Don't read into the traceframe's available | |
7501 | memory. */ | |
7502 | if (!VEC_empty (mem_range_s, available)) | |
7503 | { | |
7504 | LONGEST oldlen = len; | |
7505 | ||
7506 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7507 | gdb_assert (len <= oldlen); | |
7508 | } | |
7509 | ||
7510 | do_cleanups (old_chain); | |
7511 | ||
7512 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7513 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7514 | len, unit_size, xfered_len); |
8acf9577 YQ |
7515 | if (res == TARGET_XFER_OK) |
7516 | return TARGET_XFER_OK; | |
7517 | else | |
7518 | { | |
7519 | /* No use trying further, we know some memory starting | |
7520 | at MEMADDR isn't available. */ | |
7521 | *xfered_len = len; | |
7522 | return TARGET_XFER_UNAVAILABLE; | |
7523 | } | |
7524 | } | |
7525 | ||
7526 | /* Don't try to read more than how much is available, in | |
7527 | case the target implements the deprecated QTro packet to | |
7528 | cater for older GDBs (the target's knowledge of read-only | |
7529 | sections may be outdated by now). */ | |
7530 | len = VEC_index (mem_range_s, available, 0)->length; | |
7531 | ||
7532 | do_cleanups (old_chain); | |
7533 | } | |
7534 | } | |
7535 | ||
124e13d9 | 7536 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7537 | } |
74531fed | 7538 | |
c906108c | 7539 | \f |
c906108c | 7540 | |
a76d924d DJ |
7541 | /* Sends a packet with content determined by the printf format string |
7542 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7543 | whether the packet was a success, a failure, or unknown. */ | |
7544 | ||
77b64a49 PA |
7545 | static enum packet_result remote_send_printf (const char *format, ...) |
7546 | ATTRIBUTE_PRINTF (1, 2); | |
7547 | ||
2c0b251b | 7548 | static enum packet_result |
a76d924d DJ |
7549 | remote_send_printf (const char *format, ...) |
7550 | { | |
7551 | struct remote_state *rs = get_remote_state (); | |
7552 | int max_size = get_remote_packet_size (); | |
a76d924d | 7553 | va_list ap; |
a744cf53 | 7554 | |
a76d924d DJ |
7555 | va_start (ap, format); |
7556 | ||
7557 | rs->buf[0] = '\0'; | |
7558 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7559 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7560 | |
7561 | if (putpkt (rs->buf) < 0) | |
7562 | error (_("Communication problem with target.")); | |
7563 | ||
7564 | rs->buf[0] = '\0'; | |
7565 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7566 | ||
7567 | return packet_check_result (rs->buf); | |
7568 | } | |
7569 | ||
7570 | static void | |
7571 | restore_remote_timeout (void *p) | |
7572 | { | |
7573 | int value = *(int *)p; | |
a744cf53 | 7574 | |
a76d924d DJ |
7575 | remote_timeout = value; |
7576 | } | |
7577 | ||
7578 | /* Flash writing can take quite some time. We'll set | |
7579 | effectively infinite timeout for flash operations. | |
7580 | In future, we'll need to decide on a better approach. */ | |
7581 | static const int remote_flash_timeout = 1000; | |
7582 | ||
7583 | static void | |
7584 | remote_flash_erase (struct target_ops *ops, | |
7585 | ULONGEST address, LONGEST length) | |
7586 | { | |
f5656ead | 7587 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7588 | int saved_remote_timeout = remote_timeout; |
7589 | enum packet_result ret; | |
a76d924d DJ |
7590 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7591 | &saved_remote_timeout); | |
a744cf53 | 7592 | |
a76d924d DJ |
7593 | remote_timeout = remote_flash_timeout; |
7594 | ||
7595 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7596 | phex (address, addr_size), |
a76d924d DJ |
7597 | phex (length, 4)); |
7598 | switch (ret) | |
7599 | { | |
7600 | case PACKET_UNKNOWN: | |
7601 | error (_("Remote target does not support flash erase")); | |
7602 | case PACKET_ERROR: | |
7603 | error (_("Error erasing flash with vFlashErase packet")); | |
7604 | default: | |
7605 | break; | |
7606 | } | |
7607 | ||
7608 | do_cleanups (back_to); | |
7609 | } | |
7610 | ||
9b409511 YQ |
7611 | static enum target_xfer_status |
7612 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7613 | ULONGEST length, ULONGEST *xfered_len, | |
7614 | const gdb_byte *data) | |
a76d924d DJ |
7615 | { |
7616 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7617 | enum target_xfer_status ret; |
a76d924d | 7618 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7619 | &saved_remote_timeout); |
a76d924d DJ |
7620 | |
7621 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7622 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 7623 | xfered_len,'X', 0); |
a76d924d DJ |
7624 | do_cleanups (back_to); |
7625 | ||
7626 | return ret; | |
7627 | } | |
7628 | ||
7629 | static void | |
7630 | remote_flash_done (struct target_ops *ops) | |
7631 | { | |
7632 | int saved_remote_timeout = remote_timeout; | |
7633 | int ret; | |
7634 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7635 | &saved_remote_timeout); | |
7636 | ||
7637 | remote_timeout = remote_flash_timeout; | |
7638 | ret = remote_send_printf ("vFlashDone"); | |
7639 | do_cleanups (back_to); | |
7640 | ||
7641 | switch (ret) | |
7642 | { | |
7643 | case PACKET_UNKNOWN: | |
7644 | error (_("Remote target does not support vFlashDone")); | |
7645 | case PACKET_ERROR: | |
7646 | error (_("Error finishing flash operation")); | |
7647 | default: | |
7648 | break; | |
7649 | } | |
7650 | } | |
7651 | ||
c906108c | 7652 | static void |
fba45db2 | 7653 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7654 | { |
7655 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7656 | } | |
7657 | \f | |
7658 | /* Stuff for dealing with the packets which are part of this protocol. | |
7659 | See comment at top of file for details. */ | |
7660 | ||
1927e618 PA |
7661 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7662 | error to higher layers. Called when a serial error is detected. | |
7663 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7664 | the system error message for errno at function entry and final dot |
7665 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7666 | |
7667 | static void | |
7668 | unpush_and_perror (const char *string) | |
7669 | { | |
d6cb50a2 | 7670 | int saved_errno = errno; |
1927e618 PA |
7671 | |
7672 | remote_unpush_target (); | |
d6cb50a2 JK |
7673 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7674 | safe_strerror (saved_errno)); | |
1927e618 PA |
7675 | } |
7676 | ||
0876f84a | 7677 | /* Read a single character from the remote end. */ |
c906108c SS |
7678 | |
7679 | static int | |
fba45db2 | 7680 | readchar (int timeout) |
c906108c SS |
7681 | { |
7682 | int ch; | |
5d93a237 | 7683 | struct remote_state *rs = get_remote_state (); |
c906108c | 7684 | |
5d93a237 | 7685 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7686 | |
2acceee2 | 7687 | if (ch >= 0) |
0876f84a | 7688 | return ch; |
2acceee2 JM |
7689 | |
7690 | switch ((enum serial_rc) ch) | |
c906108c SS |
7691 | { |
7692 | case SERIAL_EOF: | |
78a095c3 | 7693 | remote_unpush_target (); |
598d3636 | 7694 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7695 | /* no return */ |
c906108c | 7696 | case SERIAL_ERROR: |
1927e618 PA |
7697 | unpush_and_perror (_("Remote communication error. " |
7698 | "Target disconnected.")); | |
2acceee2 | 7699 | /* no return */ |
c906108c | 7700 | case SERIAL_TIMEOUT: |
2acceee2 | 7701 | break; |
c906108c | 7702 | } |
2acceee2 | 7703 | return ch; |
c906108c SS |
7704 | } |
7705 | ||
c33e31fd PA |
7706 | /* Wrapper for serial_write that closes the target and throws if |
7707 | writing fails. */ | |
7708 | ||
7709 | static void | |
7710 | remote_serial_write (const char *str, int len) | |
7711 | { | |
5d93a237 TT |
7712 | struct remote_state *rs = get_remote_state (); |
7713 | ||
7714 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7715 | { |
1927e618 PA |
7716 | unpush_and_perror (_("Remote communication error. " |
7717 | "Target disconnected.")); | |
c33e31fd PA |
7718 | } |
7719 | } | |
7720 | ||
6d820c5c DJ |
7721 | /* Send the command in *BUF to the remote machine, and read the reply |
7722 | into *BUF. Report an error if we get an error reply. Resize | |
7723 | *BUF using xrealloc if necessary to hold the result, and update | |
7724 | *SIZEOF_BUF. */ | |
c906108c SS |
7725 | |
7726 | static void | |
6d820c5c DJ |
7727 | remote_send (char **buf, |
7728 | long *sizeof_buf) | |
c906108c | 7729 | { |
6d820c5c | 7730 | putpkt (*buf); |
c2d11a7d | 7731 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7732 | |
6d820c5c DJ |
7733 | if ((*buf)[0] == 'E') |
7734 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7735 | } |
7736 | ||
6e5abd65 PA |
7737 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7738 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7739 | etc. The caller is responsible for releasing the returned | |
7740 | memory. */ | |
7741 | ||
7742 | static char * | |
7743 | escape_buffer (const char *buf, int n) | |
7744 | { | |
7745 | struct cleanup *old_chain; | |
7746 | struct ui_file *stb; | |
7747 | char *str; | |
6e5abd65 PA |
7748 | |
7749 | stb = mem_fileopen (); | |
7750 | old_chain = make_cleanup_ui_file_delete (stb); | |
7751 | ||
6ef284bd | 7752 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7753 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7754 | do_cleanups (old_chain); |
7755 | return str; | |
7756 | } | |
7757 | ||
c906108c SS |
7758 | /* Display a null-terminated packet on stdout, for debugging, using C |
7759 | string notation. */ | |
7760 | ||
7761 | static void | |
baa336ce | 7762 | print_packet (const char *buf) |
c906108c SS |
7763 | { |
7764 | puts_filtered ("\""); | |
43e526b9 | 7765 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7766 | puts_filtered ("\""); |
7767 | } | |
7768 | ||
7769 | int | |
baa336ce | 7770 | putpkt (const char *buf) |
c906108c SS |
7771 | { |
7772 | return putpkt_binary (buf, strlen (buf)); | |
7773 | } | |
7774 | ||
7775 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7776 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7777 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7778 | and for a possible /0 if we are debugging (remote_debug) and want |
7779 | to print the sent packet as a string. */ | |
c906108c SS |
7780 | |
7781 | static int | |
baa336ce | 7782 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7783 | { |
2d717e4f | 7784 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7785 | int i; |
7786 | unsigned char csum = 0; | |
11cf8741 | 7787 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7788 | |
c906108c SS |
7789 | int ch; |
7790 | int tcount = 0; | |
7791 | char *p; | |
dd61ec5c | 7792 | char *message; |
c906108c | 7793 | |
e24a49d8 PA |
7794 | /* Catch cases like trying to read memory or listing threads while |
7795 | we're waiting for a stop reply. The remote server wouldn't be | |
7796 | ready to handle this request, so we'd hang and timeout. We don't | |
7797 | have to worry about this in synchronous mode, because in that | |
7798 | case it's not possible to issue a command while the target is | |
74531fed PA |
7799 | running. This is not a problem in non-stop mode, because in that |
7800 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7801 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7802 | { |
7803 | error (_("Cannot execute this command while the target is running.\n" | |
7804 | "Use the \"interrupt\" command to stop the target\n" | |
7805 | "and then try again.")); | |
7806 | } | |
e24a49d8 | 7807 | |
2d717e4f DJ |
7808 | /* We're sending out a new packet. Make sure we don't look at a |
7809 | stale cached response. */ | |
7810 | rs->cached_wait_status = 0; | |
7811 | ||
c906108c SS |
7812 | /* Copy the packet into buffer BUF2, encapsulating it |
7813 | and giving it a checksum. */ | |
7814 | ||
c906108c SS |
7815 | p = buf2; |
7816 | *p++ = '$'; | |
7817 | ||
7818 | for (i = 0; i < cnt; i++) | |
7819 | { | |
7820 | csum += buf[i]; | |
7821 | *p++ = buf[i]; | |
7822 | } | |
7823 | *p++ = '#'; | |
7824 | *p++ = tohex ((csum >> 4) & 0xf); | |
7825 | *p++ = tohex (csum & 0xf); | |
7826 | ||
7827 | /* Send it over and over until we get a positive ack. */ | |
7828 | ||
7829 | while (1) | |
7830 | { | |
7831 | int started_error_output = 0; | |
7832 | ||
7833 | if (remote_debug) | |
7834 | { | |
6e5abd65 PA |
7835 | struct cleanup *old_chain; |
7836 | char *str; | |
7837 | ||
c906108c | 7838 | *p = '\0'; |
6e5abd65 PA |
7839 | str = escape_buffer (buf2, p - buf2); |
7840 | old_chain = make_cleanup (xfree, str); | |
7841 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7842 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7843 | do_cleanups (old_chain); |
c906108c | 7844 | } |
c33e31fd | 7845 | remote_serial_write (buf2, p - buf2); |
c906108c | 7846 | |
a6f3e723 SL |
7847 | /* If this is a no acks version of the remote protocol, send the |
7848 | packet and move on. */ | |
7849 | if (rs->noack_mode) | |
7850 | break; | |
7851 | ||
74531fed PA |
7852 | /* Read until either a timeout occurs (-2) or '+' is read. |
7853 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7854 | while (1) |
7855 | { | |
7856 | ch = readchar (remote_timeout); | |
7857 | ||
c5aa993b | 7858 | if (remote_debug) |
c906108c SS |
7859 | { |
7860 | switch (ch) | |
7861 | { | |
7862 | case '+': | |
1216fa2c | 7863 | case '-': |
c906108c SS |
7864 | case SERIAL_TIMEOUT: |
7865 | case '$': | |
74531fed | 7866 | case '%': |
c906108c SS |
7867 | if (started_error_output) |
7868 | { | |
7869 | putchar_unfiltered ('\n'); | |
7870 | started_error_output = 0; | |
7871 | } | |
7872 | } | |
7873 | } | |
7874 | ||
7875 | switch (ch) | |
7876 | { | |
7877 | case '+': | |
7878 | if (remote_debug) | |
0f71a2f6 | 7879 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7880 | return 1; |
1216fa2c AC |
7881 | case '-': |
7882 | if (remote_debug) | |
7883 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7884 | /* FALLTHROUGH */ |
c906108c | 7885 | case SERIAL_TIMEOUT: |
c5aa993b | 7886 | tcount++; |
c906108c SS |
7887 | if (tcount > 3) |
7888 | return 0; | |
23860348 | 7889 | break; /* Retransmit buffer. */ |
c906108c SS |
7890 | case '$': |
7891 | { | |
40e3f985 | 7892 | if (remote_debug) |
2bc416ba | 7893 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7894 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7895 | /* It's probably an old response sent because an ACK |
7896 | was lost. Gobble up the packet and ack it so it | |
7897 | doesn't get retransmitted when we resend this | |
7898 | packet. */ | |
6d820c5c | 7899 | skip_frame (); |
c33e31fd | 7900 | remote_serial_write ("+", 1); |
23860348 | 7901 | continue; /* Now, go look for +. */ |
c906108c | 7902 | } |
74531fed PA |
7903 | |
7904 | case '%': | |
7905 | { | |
7906 | int val; | |
7907 | ||
7908 | /* If we got a notification, handle it, and go back to looking | |
7909 | for an ack. */ | |
7910 | /* We've found the start of a notification. Now | |
7911 | collect the data. */ | |
7912 | val = read_frame (&rs->buf, &rs->buf_size); | |
7913 | if (val >= 0) | |
7914 | { | |
7915 | if (remote_debug) | |
7916 | { | |
6e5abd65 PA |
7917 | struct cleanup *old_chain; |
7918 | char *str; | |
7919 | ||
7920 | str = escape_buffer (rs->buf, val); | |
7921 | old_chain = make_cleanup (xfree, str); | |
7922 | fprintf_unfiltered (gdb_stdlog, | |
7923 | " Notification received: %s\n", | |
7924 | str); | |
7925 | do_cleanups (old_chain); | |
74531fed | 7926 | } |
5965e028 | 7927 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7928 | /* We're in sync now, rewait for the ack. */ |
7929 | tcount = 0; | |
7930 | } | |
7931 | else | |
7932 | { | |
7933 | if (remote_debug) | |
7934 | { | |
7935 | if (!started_error_output) | |
7936 | { | |
7937 | started_error_output = 1; | |
7938 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7939 | } | |
7940 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7941 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7942 | } | |
7943 | } | |
7944 | continue; | |
7945 | } | |
7946 | /* fall-through */ | |
c906108c SS |
7947 | default: |
7948 | if (remote_debug) | |
7949 | { | |
7950 | if (!started_error_output) | |
7951 | { | |
7952 | started_error_output = 1; | |
0f71a2f6 | 7953 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7954 | } |
0f71a2f6 | 7955 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7956 | } |
7957 | continue; | |
7958 | } | |
23860348 | 7959 | break; /* Here to retransmit. */ |
c906108c SS |
7960 | } |
7961 | ||
7962 | #if 0 | |
7963 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7964 | able to get out next time we call QUIT, without anything as |
7965 | violent as interrupt_query. If we want to provide a way out of | |
7966 | here without getting to the next QUIT, it should be based on | |
7967 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7968 | if (quit_flag) |
7969 | { | |
7970 | quit_flag = 0; | |
7971 | interrupt_query (); | |
7972 | } | |
7973 | #endif | |
7974 | } | |
a6f3e723 | 7975 | return 0; |
c906108c SS |
7976 | } |
7977 | ||
6d820c5c DJ |
7978 | /* Come here after finding the start of a frame when we expected an |
7979 | ack. Do our best to discard the rest of this packet. */ | |
7980 | ||
7981 | static void | |
7982 | skip_frame (void) | |
7983 | { | |
7984 | int c; | |
7985 | ||
7986 | while (1) | |
7987 | { | |
7988 | c = readchar (remote_timeout); | |
7989 | switch (c) | |
7990 | { | |
7991 | case SERIAL_TIMEOUT: | |
7992 | /* Nothing we can do. */ | |
7993 | return; | |
7994 | case '#': | |
7995 | /* Discard the two bytes of checksum and stop. */ | |
7996 | c = readchar (remote_timeout); | |
7997 | if (c >= 0) | |
7998 | c = readchar (remote_timeout); | |
7999 | ||
8000 | return; | |
8001 | case '*': /* Run length encoding. */ | |
8002 | /* Discard the repeat count. */ | |
8003 | c = readchar (remote_timeout); | |
8004 | if (c < 0) | |
8005 | return; | |
8006 | break; | |
8007 | default: | |
8008 | /* A regular character. */ | |
8009 | break; | |
8010 | } | |
8011 | } | |
8012 | } | |
8013 | ||
c906108c | 8014 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8015 | into *BUF, verifying the checksum, length, and handling run-length |
8016 | compression. NUL terminate the buffer. If there is not enough room, | |
8017 | expand *BUF using xrealloc. | |
c906108c | 8018 | |
c2d11a7d JM |
8019 | Returns -1 on error, number of characters in buffer (ignoring the |
8020 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8021 | SERIAL status indications). */ |
c2d11a7d JM |
8022 | |
8023 | static long | |
6d820c5c DJ |
8024 | read_frame (char **buf_p, |
8025 | long *sizeof_buf) | |
c906108c SS |
8026 | { |
8027 | unsigned char csum; | |
c2d11a7d | 8028 | long bc; |
c906108c | 8029 | int c; |
6d820c5c | 8030 | char *buf = *buf_p; |
a6f3e723 | 8031 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8032 | |
8033 | csum = 0; | |
c2d11a7d | 8034 | bc = 0; |
c906108c SS |
8035 | |
8036 | while (1) | |
8037 | { | |
8038 | c = readchar (remote_timeout); | |
c906108c SS |
8039 | switch (c) |
8040 | { | |
8041 | case SERIAL_TIMEOUT: | |
8042 | if (remote_debug) | |
0f71a2f6 | 8043 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8044 | return -1; |
c906108c SS |
8045 | case '$': |
8046 | if (remote_debug) | |
0f71a2f6 JM |
8047 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8048 | gdb_stdlog); | |
23860348 | 8049 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8050 | case '#': |
8051 | { | |
8052 | unsigned char pktcsum; | |
e1b09194 AC |
8053 | int check_0 = 0; |
8054 | int check_1 = 0; | |
c906108c | 8055 | |
c2d11a7d | 8056 | buf[bc] = '\0'; |
c906108c | 8057 | |
e1b09194 AC |
8058 | check_0 = readchar (remote_timeout); |
8059 | if (check_0 >= 0) | |
8060 | check_1 = readchar (remote_timeout); | |
802188a7 | 8061 | |
e1b09194 AC |
8062 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8063 | { | |
8064 | if (remote_debug) | |
2bc416ba | 8065 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8066 | gdb_stdlog); |
e1b09194 AC |
8067 | return -1; |
8068 | } | |
8069 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8070 | { |
8071 | if (remote_debug) | |
2bc416ba | 8072 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8073 | gdb_stdlog); |
40e3f985 FN |
8074 | return -1; |
8075 | } | |
c906108c | 8076 | |
a6f3e723 SL |
8077 | /* Don't recompute the checksum; with no ack packets we |
8078 | don't have any way to indicate a packet retransmission | |
8079 | is necessary. */ | |
8080 | if (rs->noack_mode) | |
8081 | return bc; | |
8082 | ||
e1b09194 | 8083 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8084 | if (csum == pktcsum) |
c2d11a7d | 8085 | return bc; |
c906108c | 8086 | |
c5aa993b | 8087 | if (remote_debug) |
c906108c | 8088 | { |
6e5abd65 PA |
8089 | struct cleanup *old_chain; |
8090 | char *str; | |
8091 | ||
8092 | str = escape_buffer (buf, bc); | |
8093 | old_chain = make_cleanup (xfree, str); | |
8094 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8095 | "Bad checksum, sentsum=0x%x, " |
8096 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8097 | pktcsum, csum, str); |
8098 | do_cleanups (old_chain); | |
c906108c | 8099 | } |
c2d11a7d | 8100 | /* Number of characters in buffer ignoring trailing |
23860348 | 8101 | NULL. */ |
c2d11a7d | 8102 | return -1; |
c906108c | 8103 | } |
23860348 | 8104 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8105 | { |
8106 | int repeat; | |
c906108c | 8107 | |
a744cf53 | 8108 | csum += c; |
b4501125 AC |
8109 | c = readchar (remote_timeout); |
8110 | csum += c; | |
23860348 | 8111 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8112 | |
23860348 | 8113 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8114 | |
6d820c5c | 8115 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8116 | { |
6d820c5c DJ |
8117 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8118 | { | |
8119 | /* Make some more room in the buffer. */ | |
8120 | *sizeof_buf += repeat; | |
8121 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8122 | buf = *buf_p; | |
8123 | } | |
8124 | ||
c2d11a7d JM |
8125 | memset (&buf[bc], buf[bc - 1], repeat); |
8126 | bc += repeat; | |
c2c6d25f JM |
8127 | continue; |
8128 | } | |
8129 | ||
c2d11a7d | 8130 | buf[bc] = '\0'; |
6d820c5c | 8131 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8132 | return -1; |
c2c6d25f | 8133 | } |
c906108c | 8134 | default: |
6d820c5c | 8135 | if (bc >= *sizeof_buf - 1) |
c906108c | 8136 | { |
6d820c5c DJ |
8137 | /* Make some more room in the buffer. */ |
8138 | *sizeof_buf *= 2; | |
8139 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8140 | buf = *buf_p; | |
c906108c SS |
8141 | } |
8142 | ||
6d820c5c DJ |
8143 | buf[bc++] = c; |
8144 | csum += c; | |
8145 | continue; | |
c906108c SS |
8146 | } |
8147 | } | |
8148 | } | |
8149 | ||
8150 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8151 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8152 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8153 | rather than timing out; this is used (in synchronous mode) to wait | |
8154 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8155 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8156 | don't have to change all the calls to getpkt to deal with the | |
8157 | return value, because at the moment I don't know what the right | |
23860348 | 8158 | thing to do it for those. */ |
c906108c | 8159 | void |
6d820c5c DJ |
8160 | getpkt (char **buf, |
8161 | long *sizeof_buf, | |
c2d11a7d | 8162 | int forever) |
d9fcf2fb JM |
8163 | { |
8164 | int timed_out; | |
8165 | ||
8166 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8167 | } | |
8168 | ||
8169 | ||
8170 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8171 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8172 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8173 | rather than timing out; this is used (in synchronous mode) to wait | |
8174 | for a target that is is executing user code to stop. If FOREVER == | |
8175 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8176 | indication of this to the caller. Otherwise return the number of |
8177 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8178 | enough reason to return to the caller. *IS_NOTIF is an output |
8179 | boolean that indicates whether *BUF holds a notification or not | |
8180 | (a regular packet). */ | |
74531fed | 8181 | |
3172dc30 | 8182 | static int |
74531fed | 8183 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8184 | int expecting_notif, int *is_notif) |
c906108c | 8185 | { |
2d717e4f | 8186 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8187 | int c; |
8188 | int tries; | |
8189 | int timeout; | |
df4b58fe | 8190 | int val = -1; |
c906108c | 8191 | |
2d717e4f DJ |
8192 | /* We're reading a new response. Make sure we don't look at a |
8193 | previously cached response. */ | |
8194 | rs->cached_wait_status = 0; | |
8195 | ||
6d820c5c | 8196 | strcpy (*buf, "timeout"); |
c906108c SS |
8197 | |
8198 | if (forever) | |
74531fed PA |
8199 | timeout = watchdog > 0 ? watchdog : -1; |
8200 | else if (expecting_notif) | |
8201 | timeout = 0; /* There should already be a char in the buffer. If | |
8202 | not, bail out. */ | |
c906108c SS |
8203 | else |
8204 | timeout = remote_timeout; | |
8205 | ||
8206 | #define MAX_TRIES 3 | |
8207 | ||
74531fed PA |
8208 | /* Process any number of notifications, and then return when |
8209 | we get a packet. */ | |
8210 | for (;;) | |
c906108c | 8211 | { |
d9c43928 | 8212 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8213 | times. */ |
8214 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8215 | { |
74531fed PA |
8216 | /* This can loop forever if the remote side sends us |
8217 | characters continuously, but if it pauses, we'll get | |
8218 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8219 | we'll count that as a retry. | |
8220 | ||
8221 | Note that even when forever is set, we will only wait | |
8222 | forever prior to the start of a packet. After that, we | |
8223 | expect characters to arrive at a brisk pace. They should | |
8224 | show up within remote_timeout intervals. */ | |
8225 | do | |
8226 | c = readchar (timeout); | |
8227 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8228 | |
8229 | if (c == SERIAL_TIMEOUT) | |
8230 | { | |
74531fed PA |
8231 | if (expecting_notif) |
8232 | return -1; /* Don't complain, it's normal to not get | |
8233 | anything in this case. */ | |
8234 | ||
23860348 | 8235 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8236 | { |
2acceee2 | 8237 | QUIT; |
78a095c3 | 8238 | remote_unpush_target (); |
598d3636 JK |
8239 | throw_error (TARGET_CLOSE_ERROR, |
8240 | _("Watchdog timeout has expired. " | |
8241 | "Target detached.")); | |
c906108c | 8242 | } |
c906108c | 8243 | if (remote_debug) |
0f71a2f6 | 8244 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8245 | } |
74531fed PA |
8246 | else |
8247 | { | |
8248 | /* We've found the start of a packet or notification. | |
8249 | Now collect the data. */ | |
8250 | val = read_frame (buf, sizeof_buf); | |
8251 | if (val >= 0) | |
8252 | break; | |
8253 | } | |
8254 | ||
c33e31fd | 8255 | remote_serial_write ("-", 1); |
c906108c | 8256 | } |
c906108c | 8257 | |
74531fed PA |
8258 | if (tries > MAX_TRIES) |
8259 | { | |
8260 | /* We have tried hard enough, and just can't receive the | |
8261 | packet/notification. Give up. */ | |
8262 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8263 | |
74531fed PA |
8264 | /* Skip the ack char if we're in no-ack mode. */ |
8265 | if (!rs->noack_mode) | |
c33e31fd | 8266 | remote_serial_write ("+", 1); |
74531fed PA |
8267 | return -1; |
8268 | } | |
c906108c | 8269 | |
74531fed PA |
8270 | /* If we got an ordinary packet, return that to our caller. */ |
8271 | if (c == '$') | |
c906108c SS |
8272 | { |
8273 | if (remote_debug) | |
43e526b9 | 8274 | { |
6e5abd65 PA |
8275 | struct cleanup *old_chain; |
8276 | char *str; | |
8277 | ||
8278 | str = escape_buffer (*buf, val); | |
8279 | old_chain = make_cleanup (xfree, str); | |
8280 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8281 | do_cleanups (old_chain); | |
43e526b9 | 8282 | } |
a6f3e723 SL |
8283 | |
8284 | /* Skip the ack char if we're in no-ack mode. */ | |
8285 | if (!rs->noack_mode) | |
c33e31fd | 8286 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8287 | if (is_notif != NULL) |
8288 | *is_notif = 0; | |
0876f84a | 8289 | return val; |
c906108c SS |
8290 | } |
8291 | ||
74531fed PA |
8292 | /* If we got a notification, handle it, and go back to looking |
8293 | for a packet. */ | |
8294 | else | |
8295 | { | |
8296 | gdb_assert (c == '%'); | |
8297 | ||
8298 | if (remote_debug) | |
8299 | { | |
6e5abd65 PA |
8300 | struct cleanup *old_chain; |
8301 | char *str; | |
8302 | ||
8303 | str = escape_buffer (*buf, val); | |
8304 | old_chain = make_cleanup (xfree, str); | |
8305 | fprintf_unfiltered (gdb_stdlog, | |
8306 | " Notification received: %s\n", | |
8307 | str); | |
8308 | do_cleanups (old_chain); | |
74531fed | 8309 | } |
fee9eda9 YQ |
8310 | if (is_notif != NULL) |
8311 | *is_notif = 1; | |
c906108c | 8312 | |
5965e028 | 8313 | handle_notification (rs->notif_state, *buf); |
c906108c | 8314 | |
74531fed | 8315 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8316 | |
74531fed | 8317 | if (expecting_notif) |
fee9eda9 | 8318 | return val; |
74531fed PA |
8319 | } |
8320 | } | |
8321 | } | |
8322 | ||
8323 | static int | |
8324 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8325 | { | |
fee9eda9 | 8326 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8327 | } |
8328 | ||
8329 | static int | |
fee9eda9 YQ |
8330 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8331 | int *is_notif) | |
74531fed | 8332 | { |
fee9eda9 YQ |
8333 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8334 | is_notif); | |
c906108c | 8335 | } |
74531fed | 8336 | |
cbb8991c DB |
8337 | /* Check whether EVENT is a fork event for the process specified |
8338 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8339 | ||
8340 | static int | |
8341 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8342 | QUEUE_ITER (stop_reply_p) *iter, | |
8343 | stop_reply_p event, | |
8344 | void *data) | |
8345 | { | |
8346 | struct queue_iter_param *param = data; | |
8347 | int parent_pid = *(int *) param->input; | |
8348 | ||
8349 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8350 | { | |
8351 | struct remote_state *rs = get_remote_state (); | |
8352 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8353 | int res; | |
8354 | ||
8355 | res = remote_vkill (child_pid, rs); | |
8356 | if (res != 0) | |
8357 | error (_("Can't kill fork child process %d"), child_pid); | |
8358 | } | |
8359 | ||
8360 | return 1; | |
8361 | } | |
8362 | ||
8363 | /* Kill any new fork children of process PID that haven't been | |
8364 | processed by follow_fork. */ | |
8365 | ||
8366 | static void | |
8367 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8368 | { | |
8369 | struct thread_info *thread; | |
8370 | struct notif_client *notif = ¬if_client_stop; | |
8371 | struct queue_iter_param param; | |
8372 | ||
8373 | /* Kill the fork child threads of any threads in process PID | |
8374 | that are stopped at a fork event. */ | |
8375 | ALL_NON_EXITED_THREADS (thread) | |
8376 | { | |
8377 | struct target_waitstatus *ws = &thread->pending_follow; | |
8378 | ||
8379 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8380 | { | |
8381 | struct remote_state *rs = get_remote_state (); | |
8382 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8383 | int res; | |
8384 | ||
8385 | res = remote_vkill (child_pid, rs); | |
8386 | if (res != 0) | |
8387 | error (_("Can't kill fork child process %d"), child_pid); | |
8388 | } | |
8389 | } | |
8390 | ||
8391 | /* Check for any pending fork events (not reported or processed yet) | |
8392 | in process PID and kill those fork child threads as well. */ | |
8393 | remote_notif_get_pending_events (notif); | |
8394 | param.input = &pid; | |
8395 | param.output = NULL; | |
8396 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8397 | kill_child_of_pending_fork, ¶m); | |
8398 | } | |
8399 | ||
c906108c SS |
8400 | \f |
8401 | static void | |
7d85a9c0 | 8402 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8403 | { |
0fdf84ca PA |
8404 | |
8405 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8406 | aren't on speaking terms with the remote system. */ |
492d29ea | 8407 | TRY |
0fdf84ca PA |
8408 | { |
8409 | putpkt ("k"); | |
8410 | } | |
492d29ea | 8411 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8412 | { |
8413 | if (ex.error == TARGET_CLOSE_ERROR) | |
8414 | { | |
8415 | /* If we got an (EOF) error that caused the target | |
8416 | to go away, then we're done, that's what we wanted. | |
8417 | "k" is susceptible to cause a premature EOF, given | |
8418 | that the remote server isn't actually required to | |
8419 | reply to "k", and it can happen that it doesn't | |
8420 | even get to reply ACK to the "k". */ | |
8421 | return; | |
8422 | } | |
8423 | ||
8424 | /* Otherwise, something went wrong. We didn't actually kill | |
8425 | the target. Just propagate the exception, and let the | |
8426 | user or higher layers decide what to do. */ | |
8427 | throw_exception (ex); | |
8428 | } | |
492d29ea | 8429 | END_CATCH |
43ff13b4 | 8430 | |
0fdf84ca PA |
8431 | /* We've killed the remote end, we get to mourn it. Since this is |
8432 | target remote, single-process, mourning the inferior also | |
8433 | unpushes remote_ops. */ | |
43ff13b4 JM |
8434 | target_mourn_inferior (); |
8435 | } | |
8436 | ||
82f73884 PA |
8437 | static int |
8438 | remote_vkill (int pid, struct remote_state *rs) | |
8439 | { | |
4082afcc | 8440 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8441 | return -1; |
8442 | ||
8443 | /* Tell the remote target to detach. */ | |
bba74b36 | 8444 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8445 | putpkt (rs->buf); |
8446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8447 | ||
4082afcc PA |
8448 | switch (packet_ok (rs->buf, |
8449 | &remote_protocol_packets[PACKET_vKill])) | |
8450 | { | |
8451 | case PACKET_OK: | |
8452 | return 0; | |
8453 | case PACKET_ERROR: | |
8454 | return 1; | |
8455 | case PACKET_UNKNOWN: | |
8456 | return -1; | |
8457 | default: | |
8458 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8459 | } | |
82f73884 PA |
8460 | } |
8461 | ||
8462 | static void | |
7d85a9c0 | 8463 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8464 | { |
8465 | int res; | |
8466 | int pid = ptid_get_pid (inferior_ptid); | |
8467 | struct remote_state *rs = get_remote_state (); | |
8468 | ||
cbb8991c DB |
8469 | /* If we're stopped while forking and we haven't followed yet, kill the |
8470 | child task. We need to do this before killing the parent task | |
8471 | because if this is a vfork then the parent will be sleeping. */ | |
8472 | kill_new_fork_children (pid, rs); | |
8473 | ||
82f73884 | 8474 | res = remote_vkill (pid, rs); |
901f9912 | 8475 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8476 | { |
8477 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8478 | to specify the pid. */ | |
8479 | ||
8480 | putpkt ("k"); | |
8481 | #if 0 | |
8482 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8483 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8484 | res = 1; | |
8485 | #else | |
8486 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8487 | we do or not. For the existing stubs, kill is a noop. */ | |
8488 | res = 0; | |
8489 | #endif | |
8490 | } | |
8491 | ||
8492 | if (res != 0) | |
8493 | error (_("Can't kill process")); | |
8494 | ||
82f73884 PA |
8495 | target_mourn_inferior (); |
8496 | } | |
8497 | ||
c906108c | 8498 | static void |
20f796c9 | 8499 | remote_mourn (struct target_ops *target) |
c906108c SS |
8500 | { |
8501 | unpush_target (target); | |
ce5ce7ed | 8502 | |
8a2492ee PA |
8503 | /* remote_close takes care of doing most of the clean up. */ |
8504 | generic_mourn_inferior (); | |
c906108c SS |
8505 | } |
8506 | ||
2d717e4f | 8507 | static void |
20f796c9 | 8508 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8509 | { |
8510 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8511 | |
e24a49d8 PA |
8512 | /* In case we got here due to an error, but we're going to stay |
8513 | connected. */ | |
8514 | rs->waiting_for_stop_reply = 0; | |
8515 | ||
dc1981d7 PA |
8516 | /* If the current general thread belonged to the process we just |
8517 | detached from or has exited, the remote side current general | |
8518 | thread becomes undefined. Considering a case like this: | |
8519 | ||
8520 | - We just got here due to a detach. | |
8521 | - The process that we're detaching from happens to immediately | |
8522 | report a global breakpoint being hit in non-stop mode, in the | |
8523 | same thread we had selected before. | |
8524 | - GDB attaches to this process again. | |
8525 | - This event happens to be the next event we handle. | |
8526 | ||
8527 | GDB would consider that the current general thread didn't need to | |
8528 | be set on the stub side (with Hg), since for all it knew, | |
8529 | GENERAL_THREAD hadn't changed. | |
8530 | ||
8531 | Notice that although in all-stop mode, the remote server always | |
8532 | sets the current thread to the thread reporting the stop event, | |
8533 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8534 | not* change the current thread when reporting a breakpoint hit, | |
8535 | due to the decoupling of event reporting and event handling. | |
8536 | ||
8537 | To keep things simple, we always invalidate our notion of the | |
8538 | current thread. */ | |
47f8a51d | 8539 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8540 | |
2d717e4f DJ |
8541 | /* Unlike "target remote", we do not want to unpush the target; then |
8542 | the next time the user says "run", we won't be connected. */ | |
8543 | ||
48aa3c27 PA |
8544 | /* Call common code to mark the inferior as not running. */ |
8545 | generic_mourn_inferior (); | |
8546 | ||
d729566a | 8547 | if (!have_inferiors ()) |
2d717e4f | 8548 | { |
82f73884 PA |
8549 | if (!remote_multi_process_p (rs)) |
8550 | { | |
8551 | /* Check whether the target is running now - some remote stubs | |
8552 | automatically restart after kill. */ | |
8553 | putpkt ("?"); | |
8554 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8555 | ||
8556 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8557 | { | |
3e43a32a MS |
8558 | /* Assume that the target has been restarted. Set |
8559 | inferior_ptid so that bits of core GDB realizes | |
8560 | there's something here, e.g., so that the user can | |
8561 | say "kill" again. */ | |
82f73884 PA |
8562 | inferior_ptid = magic_null_ptid; |
8563 | } | |
82f73884 | 8564 | } |
2d717e4f DJ |
8565 | } |
8566 | } | |
c906108c | 8567 | |
03583c20 | 8568 | static int |
2bfc0540 | 8569 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8570 | { |
4082afcc | 8571 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8572 | } |
8573 | ||
8574 | static void | |
8575 | extended_remote_disable_randomization (int val) | |
8576 | { | |
8577 | struct remote_state *rs = get_remote_state (); | |
8578 | char *reply; | |
8579 | ||
bba74b36 YQ |
8580 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8581 | val); | |
03583c20 UW |
8582 | putpkt (rs->buf); |
8583 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8584 | if (*reply == '\0') | |
8585 | error (_("Target does not support QDisableRandomization.")); | |
8586 | if (strcmp (reply, "OK") != 0) | |
8587 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8588 | } | |
8589 | ||
2d717e4f DJ |
8590 | static int |
8591 | extended_remote_run (char *args) | |
8592 | { | |
8593 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8594 | int len; |
c906108c | 8595 | |
2d717e4f DJ |
8596 | /* If the user has disabled vRun support, or we have detected that |
8597 | support is not available, do not try it. */ | |
4082afcc | 8598 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8599 | return -1; |
424163ea | 8600 | |
2d717e4f DJ |
8601 | strcpy (rs->buf, "vRun;"); |
8602 | len = strlen (rs->buf); | |
c906108c | 8603 | |
2d717e4f DJ |
8604 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8605 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8606 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8607 | strlen (remote_exec_file)); | |
2d717e4f | 8608 | |
d1a41061 | 8609 | gdb_assert (args != NULL); |
2d717e4f DJ |
8610 | if (*args) |
8611 | { | |
8612 | struct cleanup *back_to; | |
8613 | int i; | |
8614 | char **argv; | |
8615 | ||
d1a41061 | 8616 | argv = gdb_buildargv (args); |
6e366df1 | 8617 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8618 | for (i = 0; argv[i] != NULL; i++) |
8619 | { | |
8620 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8621 | error (_("Argument list too long for run packet")); | |
8622 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8623 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8624 | strlen (argv[i])); | |
2d717e4f DJ |
8625 | } |
8626 | do_cleanups (back_to); | |
8627 | } | |
8628 | ||
8629 | rs->buf[len++] = '\0'; | |
8630 | ||
8631 | putpkt (rs->buf); | |
8632 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8633 | ||
4082afcc | 8634 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8635 | { |
4082afcc | 8636 | case PACKET_OK: |
3405876a | 8637 | /* We have a wait response. All is well. */ |
2d717e4f | 8638 | return 0; |
4082afcc PA |
8639 | case PACKET_UNKNOWN: |
8640 | return -1; | |
8641 | case PACKET_ERROR: | |
2d717e4f DJ |
8642 | if (remote_exec_file[0] == '\0') |
8643 | error (_("Running the default executable on the remote target failed; " | |
8644 | "try \"set remote exec-file\"?")); | |
8645 | else | |
8646 | error (_("Running \"%s\" on the remote target failed"), | |
8647 | remote_exec_file); | |
4082afcc PA |
8648 | default: |
8649 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8650 | } |
c906108c SS |
8651 | } |
8652 | ||
2d717e4f DJ |
8653 | /* In the extended protocol we want to be able to do things like |
8654 | "run" and have them basically work as expected. So we need | |
8655 | a special create_inferior function. We support changing the | |
8656 | executable file and the command line arguments, but not the | |
8657 | environment. */ | |
8658 | ||
43ff13b4 | 8659 | static void |
77a19445 TT |
8660 | extended_remote_create_inferior (struct target_ops *ops, |
8661 | char *exec_file, char *args, | |
8662 | char **env, int from_tty) | |
43ff13b4 | 8663 | { |
3405876a PA |
8664 | int run_worked; |
8665 | char *stop_reply; | |
8666 | struct remote_state *rs = get_remote_state (); | |
8667 | ||
43ff13b4 | 8668 | /* If running asynchronously, register the target file descriptor |
23860348 | 8669 | with the event loop. */ |
75c99385 | 8670 | if (target_can_async_p ()) |
6a3753b3 | 8671 | target_async (1); |
43ff13b4 | 8672 | |
03583c20 | 8673 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8674 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8675 | extended_remote_disable_randomization (disable_randomization); |
8676 | ||
43ff13b4 | 8677 | /* Now restart the remote server. */ |
3405876a PA |
8678 | run_worked = extended_remote_run (args) != -1; |
8679 | if (!run_worked) | |
2d717e4f DJ |
8680 | { |
8681 | /* vRun was not supported. Fail if we need it to do what the | |
8682 | user requested. */ | |
8683 | if (remote_exec_file[0]) | |
8684 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8685 | if (args[0]) | |
8686 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8687 | |
2d717e4f DJ |
8688 | /* Fall back to "R". */ |
8689 | extended_remote_restart (); | |
8690 | } | |
424163ea | 8691 | |
6c95b8df PA |
8692 | if (!have_inferiors ()) |
8693 | { | |
8694 | /* Clean up from the last time we ran, before we mark the target | |
8695 | running again. This will mark breakpoints uninserted, and | |
8696 | get_offsets may insert breakpoints. */ | |
8697 | init_thread_list (); | |
8698 | init_wait_for_inferior (); | |
8699 | } | |
45280a52 | 8700 | |
3405876a PA |
8701 | /* vRun's success return is a stop reply. */ |
8702 | stop_reply = run_worked ? rs->buf : NULL; | |
8703 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8704 | |
2d717e4f DJ |
8705 | /* Get updated offsets, if the stub uses qOffsets. */ |
8706 | get_offsets (); | |
2d717e4f | 8707 | } |
c906108c | 8708 | \f |
c5aa993b | 8709 | |
b775012e LM |
8710 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8711 | the list of conditions (in agent expression bytecode format), if any, the | |
8712 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8713 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8714 | |
8715 | static int | |
8716 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8717 | struct bp_target_info *bp_tgt, char *buf, |
8718 | char *buf_end) | |
b775012e LM |
8719 | { |
8720 | struct agent_expr *aexpr = NULL; | |
8721 | int i, ix; | |
8722 | char *pkt; | |
8723 | char *buf_start = buf; | |
8724 | ||
8725 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8726 | return 0; | |
8727 | ||
8728 | buf += strlen (buf); | |
bba74b36 | 8729 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8730 | buf++; |
8731 | ||
8732 | /* Send conditions to the target and free the vector. */ | |
8733 | for (ix = 0; | |
8734 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8735 | ix++) | |
8736 | { | |
bba74b36 | 8737 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8738 | buf += strlen (buf); |
8739 | for (i = 0; i < aexpr->len; ++i) | |
8740 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8741 | *buf = '\0'; | |
8742 | } | |
b775012e LM |
8743 | return 0; |
8744 | } | |
8745 | ||
d3ce09f5 SS |
8746 | static void |
8747 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8748 | struct bp_target_info *bp_tgt, char *buf) | |
8749 | { | |
8750 | struct agent_expr *aexpr = NULL; | |
8751 | int i, ix; | |
8752 | ||
8753 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8754 | return; | |
8755 | ||
8756 | buf += strlen (buf); | |
8757 | ||
8758 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8759 | buf += strlen (buf); | |
8760 | ||
8761 | /* Concatenate all the agent expressions that are commands into the | |
8762 | cmds parameter. */ | |
8763 | for (ix = 0; | |
8764 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8765 | ix++) | |
8766 | { | |
8767 | sprintf (buf, "X%x,", aexpr->len); | |
8768 | buf += strlen (buf); | |
8769 | for (i = 0; i < aexpr->len; ++i) | |
8770 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8771 | *buf = '\0'; | |
8772 | } | |
d3ce09f5 SS |
8773 | } |
8774 | ||
8181d85f DJ |
8775 | /* Insert a breakpoint. On targets that have software breakpoint |
8776 | support, we ask the remote target to do the work; on targets | |
8777 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8778 | |
8779 | static int | |
3db08215 MM |
8780 | remote_insert_breakpoint (struct target_ops *ops, |
8781 | struct gdbarch *gdbarch, | |
a6d9a66e | 8782 | struct bp_target_info *bp_tgt) |
c906108c | 8783 | { |
d471ea57 AC |
8784 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8785 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8786 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8787 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8788 | |
4082afcc | 8789 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8790 | { |
0d5ed153 | 8791 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8792 | struct remote_state *rs; |
bba74b36 | 8793 | char *p, *endbuf; |
7c0f6dcc | 8794 | int bpsize; |
b775012e | 8795 | struct condition_list *cond = NULL; |
4fff2411 | 8796 | |
28439a30 PA |
8797 | /* Make sure the remote is pointing at the right process, if |
8798 | necessary. */ | |
8799 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8800 | set_general_process (); | |
8801 | ||
a1dcb23a | 8802 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8803 | |
8804 | rs = get_remote_state (); | |
8805 | p = rs->buf; | |
bba74b36 | 8806 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8807 | |
96baa820 JM |
8808 | *(p++) = 'Z'; |
8809 | *(p++) = '0'; | |
8810 | *(p++) = ','; | |
7c0f6dcc | 8811 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8812 | p += hexnumstr (p, addr); |
bba74b36 | 8813 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8814 | |
efcc2da7 | 8815 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8816 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8817 | |
78eff0ec | 8818 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8819 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8820 | ||
6d820c5c DJ |
8821 | putpkt (rs->buf); |
8822 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8823 | |
6d820c5c | 8824 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8825 | { |
d471ea57 AC |
8826 | case PACKET_ERROR: |
8827 | return -1; | |
8828 | case PACKET_OK: | |
7c0f6dcc JL |
8829 | bp_tgt->placed_address = addr; |
8830 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8831 | return 0; |
8832 | case PACKET_UNKNOWN: | |
8833 | break; | |
96baa820 JM |
8834 | } |
8835 | } | |
c906108c | 8836 | |
0000e5cc PA |
8837 | /* If this breakpoint has target-side commands but this stub doesn't |
8838 | support Z0 packets, throw error. */ | |
8839 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8840 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8841 | Target doesn't support breakpoints that have target side commands.")); | |
8842 | ||
3db08215 | 8843 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8844 | } |
8845 | ||
8846 | static int | |
3db08215 MM |
8847 | remote_remove_breakpoint (struct target_ops *ops, |
8848 | struct gdbarch *gdbarch, | |
a6d9a66e | 8849 | struct bp_target_info *bp_tgt) |
c906108c | 8850 | { |
8181d85f | 8851 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8852 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8853 | |
4082afcc | 8854 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8855 | { |
6d820c5c | 8856 | char *p = rs->buf; |
bba74b36 | 8857 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8858 | |
28439a30 PA |
8859 | /* Make sure the remote is pointing at the right process, if |
8860 | necessary. */ | |
8861 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8862 | set_general_process (); | |
8863 | ||
96baa820 JM |
8864 | *(p++) = 'z'; |
8865 | *(p++) = '0'; | |
8866 | *(p++) = ','; | |
8867 | ||
8181d85f DJ |
8868 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8869 | p += hexnumstr (p, addr); | |
bba74b36 | 8870 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8871 | |
6d820c5c DJ |
8872 | putpkt (rs->buf); |
8873 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8874 | |
6d820c5c | 8875 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8876 | } |
8877 | ||
3db08215 | 8878 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8879 | } |
8880 | ||
f486487f | 8881 | static enum Z_packet_type |
d471ea57 AC |
8882 | watchpoint_to_Z_packet (int type) |
8883 | { | |
8884 | switch (type) | |
8885 | { | |
8886 | case hw_write: | |
bb858e6a | 8887 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8888 | break; |
8889 | case hw_read: | |
bb858e6a | 8890 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8891 | break; |
8892 | case hw_access: | |
bb858e6a | 8893 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8894 | break; |
8895 | default: | |
8e65ff28 | 8896 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8897 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8898 | } |
8899 | } | |
8900 | ||
3c3bea1c | 8901 | static int |
f486487f SM |
8902 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8903 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8904 | { |
d01949b6 | 8905 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8906 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8907 | char *p; |
d471ea57 | 8908 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8909 | |
4082afcc | 8910 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8911 | return 1; |
802188a7 | 8912 | |
28439a30 PA |
8913 | /* Make sure the remote is pointing at the right process, if |
8914 | necessary. */ | |
8915 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8916 | set_general_process (); | |
8917 | ||
bba74b36 | 8918 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8919 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8920 | addr = remote_address_masked (addr); |
8921 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8922 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8923 | |
6d820c5c DJ |
8924 | putpkt (rs->buf); |
8925 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8926 | |
6d820c5c | 8927 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8928 | { |
8929 | case PACKET_ERROR: | |
d471ea57 | 8930 | return -1; |
85d721b8 PA |
8931 | case PACKET_UNKNOWN: |
8932 | return 1; | |
d471ea57 AC |
8933 | case PACKET_OK: |
8934 | return 0; | |
8935 | } | |
8e65ff28 | 8936 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8937 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8938 | } |
8939 | ||
283002cf MR |
8940 | static int |
8941 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8942 | CORE_ADDR start, int length) | |
8943 | { | |
8944 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8945 | ||
8946 | return diff < length; | |
8947 | } | |
8948 | ||
d471ea57 | 8949 | |
3c3bea1c | 8950 | static int |
f486487f SM |
8951 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8952 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8953 | { |
d01949b6 | 8954 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8955 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8956 | char *p; |
d471ea57 AC |
8957 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8958 | ||
4082afcc | 8959 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8960 | return -1; |
802188a7 | 8961 | |
28439a30 PA |
8962 | /* Make sure the remote is pointing at the right process, if |
8963 | necessary. */ | |
8964 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8965 | set_general_process (); | |
8966 | ||
bba74b36 | 8967 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8968 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8969 | addr = remote_address_masked (addr); |
8970 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8971 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8972 | putpkt (rs->buf); |
8973 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8974 | |
6d820c5c | 8975 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8976 | { |
8977 | case PACKET_ERROR: | |
8978 | case PACKET_UNKNOWN: | |
8979 | return -1; | |
8980 | case PACKET_OK: | |
8981 | return 0; | |
8982 | } | |
8e65ff28 | 8983 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8984 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8985 | } |
8986 | ||
3c3bea1c | 8987 | |
501eef12 | 8988 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8989 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8990 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8991 | |
480a3f21 | 8992 | static int |
31568a15 TT |
8993 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8994 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8995 | { |
8996 | if (remote_hw_watchpoint_length_limit == 0) | |
8997 | return 0; | |
8998 | else if (remote_hw_watchpoint_length_limit < 0) | |
8999 | return 1; | |
9000 | else if (len <= remote_hw_watchpoint_length_limit) | |
9001 | return 1; | |
9002 | else | |
9003 | return 0; | |
9004 | } | |
9005 | ||
b9362cc7 | 9006 | static int |
5461485a | 9007 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9008 | enum bptype type, int cnt, int ot) |
96baa820 | 9009 | { |
3c3bea1c GS |
9010 | if (type == bp_hardware_breakpoint) |
9011 | { | |
9012 | if (remote_hw_breakpoint_limit == 0) | |
9013 | return 0; | |
501eef12 AC |
9014 | else if (remote_hw_breakpoint_limit < 0) |
9015 | return 1; | |
3c3bea1c GS |
9016 | else if (cnt <= remote_hw_breakpoint_limit) |
9017 | return 1; | |
9018 | } | |
9019 | else | |
9020 | { | |
9021 | if (remote_hw_watchpoint_limit == 0) | |
9022 | return 0; | |
501eef12 AC |
9023 | else if (remote_hw_watchpoint_limit < 0) |
9024 | return 1; | |
3c3bea1c GS |
9025 | else if (ot) |
9026 | return -1; | |
9027 | else if (cnt <= remote_hw_watchpoint_limit) | |
9028 | return 1; | |
9029 | } | |
9030 | return -1; | |
9031 | } | |
9032 | ||
f7e6eed5 PA |
9033 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9034 | ||
9035 | static int | |
9036 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9037 | { | |
9038 | struct remote_state *rs = get_remote_state (); | |
9039 | ||
9040 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
9041 | } | |
9042 | ||
9043 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9044 | remote. */ | |
9045 | ||
9046 | static int | |
9047 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9048 | { | |
9049 | struct remote_state *rs = get_remote_state (); | |
9050 | ||
9051 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
9052 | } | |
9053 | ||
9054 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9055 | ||
9056 | static int | |
9057 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9058 | { | |
9059 | struct remote_state *rs = get_remote_state (); | |
9060 | ||
9061 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
9062 | } | |
9063 | ||
9064 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9065 | remote. */ | |
9066 | ||
9067 | static int | |
9068 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9069 | { | |
9070 | struct remote_state *rs = get_remote_state (); | |
9071 | ||
9072 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
9073 | } | |
9074 | ||
b9362cc7 | 9075 | static int |
6a109b6b | 9076 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9077 | { |
ee154bee TT |
9078 | struct remote_state *rs = get_remote_state (); |
9079 | ||
f7e6eed5 | 9080 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
9081 | } |
9082 | ||
4aa7a7f5 JJ |
9083 | static int |
9084 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9085 | { |
ee154bee | 9086 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 9087 | int rc = 0; |
a744cf53 | 9088 | |
6a109b6b | 9089 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 9090 | { |
ee154bee | 9091 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
9092 | rc = 1; |
9093 | } | |
9094 | ||
9095 | return rc; | |
3c3bea1c GS |
9096 | } |
9097 | ||
9098 | ||
9099 | static int | |
23a26771 | 9100 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9101 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9102 | { |
0d5ed153 | 9103 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9104 | struct remote_state *rs; |
bba74b36 | 9105 | char *p, *endbuf; |
dd61ec5c | 9106 | char *message; |
0d5ed153 | 9107 | int bpsize; |
802188a7 | 9108 | |
c8189ed1 | 9109 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9110 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9111 | |
0d5ed153 | 9112 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9113 | |
4082afcc | 9114 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9115 | return -1; |
2bc416ba | 9116 | |
28439a30 PA |
9117 | /* Make sure the remote is pointing at the right process, if |
9118 | necessary. */ | |
9119 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9120 | set_general_process (); | |
9121 | ||
4fff2411 JZ |
9122 | rs = get_remote_state (); |
9123 | p = rs->buf; | |
bba74b36 | 9124 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9125 | |
96baa820 JM |
9126 | *(p++) = 'Z'; |
9127 | *(p++) = '1'; | |
9128 | *(p++) = ','; | |
802188a7 | 9129 | |
0d5ed153 | 9130 | addr = remote_address_masked (addr); |
96baa820 | 9131 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9132 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9133 | |
efcc2da7 | 9134 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9135 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9136 | |
78eff0ec | 9137 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9138 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9139 | ||
6d820c5c DJ |
9140 | putpkt (rs->buf); |
9141 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9142 | |
6d820c5c | 9143 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9144 | { |
9145 | case PACKET_ERROR: | |
dd61ec5c MW |
9146 | if (rs->buf[1] == '.') |
9147 | { | |
9148 | message = strchr (rs->buf + 2, '.'); | |
9149 | if (message) | |
0316657e | 9150 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9151 | } |
9152 | return -1; | |
d471ea57 AC |
9153 | case PACKET_UNKNOWN: |
9154 | return -1; | |
9155 | case PACKET_OK: | |
0d5ed153 MR |
9156 | bp_tgt->placed_address = addr; |
9157 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9158 | return 0; |
9159 | } | |
8e65ff28 | 9160 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9161 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9162 | } |
9163 | ||
d471ea57 | 9164 | |
802188a7 | 9165 | static int |
a64dc96c | 9166 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9167 | struct bp_target_info *bp_tgt) |
96baa820 | 9168 | { |
8181d85f | 9169 | CORE_ADDR addr; |
d01949b6 | 9170 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9171 | char *p = rs->buf; |
bba74b36 | 9172 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9173 | |
4082afcc | 9174 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9175 | return -1; |
802188a7 | 9176 | |
28439a30 PA |
9177 | /* Make sure the remote is pointing at the right process, if |
9178 | necessary. */ | |
9179 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9180 | set_general_process (); | |
9181 | ||
96baa820 JM |
9182 | *(p++) = 'z'; |
9183 | *(p++) = '1'; | |
9184 | *(p++) = ','; | |
802188a7 | 9185 | |
8181d85f | 9186 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9187 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9188 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9189 | |
6d820c5c DJ |
9190 | putpkt (rs->buf); |
9191 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9192 | |
6d820c5c | 9193 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9194 | { |
9195 | case PACKET_ERROR: | |
9196 | case PACKET_UNKNOWN: | |
9197 | return -1; | |
9198 | case PACKET_OK: | |
9199 | return 0; | |
9200 | } | |
8e65ff28 | 9201 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9202 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9203 | } |
96baa820 | 9204 | |
4a5e7a5b PA |
9205 | /* Verify memory using the "qCRC:" request. */ |
9206 | ||
9207 | static int | |
9208 | remote_verify_memory (struct target_ops *ops, | |
9209 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9210 | { | |
9211 | struct remote_state *rs = get_remote_state (); | |
9212 | unsigned long host_crc, target_crc; | |
9213 | char *tmp; | |
9214 | ||
936d2992 PA |
9215 | /* It doesn't make sense to use qCRC if the remote target is |
9216 | connected but not running. */ | |
9217 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9218 | { | |
9219 | enum packet_result result; | |
28439a30 | 9220 | |
936d2992 PA |
9221 | /* Make sure the remote is pointing at the right process. */ |
9222 | set_general_process (); | |
4a5e7a5b | 9223 | |
936d2992 PA |
9224 | /* FIXME: assumes lma can fit into long. */ |
9225 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9226 | (long) lma, (long) size); | |
9227 | putpkt (rs->buf); | |
4a5e7a5b | 9228 | |
936d2992 PA |
9229 | /* Be clever; compute the host_crc before waiting for target |
9230 | reply. */ | |
9231 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9232 | ||
9233 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9234 | |
936d2992 PA |
9235 | result = packet_ok (rs->buf, |
9236 | &remote_protocol_packets[PACKET_qCRC]); | |
9237 | if (result == PACKET_ERROR) | |
9238 | return -1; | |
9239 | else if (result == PACKET_OK) | |
9240 | { | |
9241 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9242 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9243 | |
936d2992 PA |
9244 | return (host_crc == target_crc); |
9245 | } | |
9246 | } | |
4a5e7a5b | 9247 | |
936d2992 | 9248 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9249 | } |
9250 | ||
c906108c SS |
9251 | /* compare-sections command |
9252 | ||
9253 | With no arguments, compares each loadable section in the exec bfd | |
9254 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9255 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9256 | |
c906108c | 9257 | static void |
fba45db2 | 9258 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9259 | { |
9260 | asection *s; | |
c906108c | 9261 | struct cleanup *old_chain; |
948f8e3d | 9262 | gdb_byte *sectdata; |
ce359b09 | 9263 | const char *sectname; |
c906108c SS |
9264 | bfd_size_type size; |
9265 | bfd_vma lma; | |
9266 | int matched = 0; | |
9267 | int mismatched = 0; | |
4a5e7a5b | 9268 | int res; |
95cf3b38 | 9269 | int read_only = 0; |
c906108c SS |
9270 | |
9271 | if (!exec_bfd) | |
8a3fe4f8 | 9272 | error (_("command cannot be used without an exec file")); |
c906108c | 9273 | |
28439a30 PA |
9274 | /* Make sure the remote is pointing at the right process. */ |
9275 | set_general_process (); | |
9276 | ||
95cf3b38 DT |
9277 | if (args != NULL && strcmp (args, "-r") == 0) |
9278 | { | |
9279 | read_only = 1; | |
9280 | args = NULL; | |
9281 | } | |
9282 | ||
c5aa993b | 9283 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9284 | { |
9285 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9286 | continue; /* Skip non-loadable section. */ |
c906108c | 9287 | |
95cf3b38 DT |
9288 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9289 | continue; /* Skip writeable sections */ | |
9290 | ||
2c500098 | 9291 | size = bfd_get_section_size (s); |
c906108c | 9292 | if (size == 0) |
0df8b418 | 9293 | continue; /* Skip zero-length section. */ |
c906108c | 9294 | |
ce359b09 | 9295 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9296 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9297 | continue; /* Not the section selected by user. */ |
c906108c | 9298 | |
0df8b418 | 9299 | matched = 1; /* Do this section. */ |
c906108c | 9300 | lma = s->lma; |
c906108c | 9301 | |
c906108c | 9302 | sectdata = xmalloc (size); |
b8c9b27d | 9303 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9304 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9305 | |
4a5e7a5b PA |
9306 | res = target_verify_memory (sectdata, lma, size); |
9307 | ||
9308 | if (res == -1) | |
5af949e3 | 9309 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9310 | paddress (target_gdbarch (), lma), |
9311 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9312 | |
5af949e3 | 9313 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9314 | paddress (target_gdbarch (), lma), |
9315 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9316 | if (res) |
c906108c SS |
9317 | printf_filtered ("matched.\n"); |
9318 | else | |
c5aa993b JM |
9319 | { |
9320 | printf_filtered ("MIS-MATCHED!\n"); | |
9321 | mismatched++; | |
9322 | } | |
c906108c SS |
9323 | |
9324 | do_cleanups (old_chain); | |
9325 | } | |
9326 | if (mismatched > 0) | |
936d2992 | 9327 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9328 | the loaded file\n")); |
c906108c | 9329 | if (args && !matched) |
a3f17187 | 9330 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9331 | } |
9332 | ||
0e7f50da UW |
9333 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9334 | into remote target. The number of bytes written to the remote | |
9335 | target is returned, or -1 for error. */ | |
9336 | ||
9b409511 | 9337 | static enum target_xfer_status |
0e7f50da UW |
9338 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9339 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9340 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9341 | struct packet_config *packet) |
9342 | { | |
9343 | int i, buf_len; | |
9344 | ULONGEST n; | |
0e7f50da UW |
9345 | struct remote_state *rs = get_remote_state (); |
9346 | int max_size = get_memory_write_packet_size (); | |
9347 | ||
9348 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9349 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9350 | |
9351 | /* Insert header. */ | |
9352 | i = snprintf (rs->buf, max_size, | |
9353 | "qXfer:%s:write:%s:%s:", | |
9354 | object_name, annex ? annex : "", | |
9355 | phex_nz (offset, sizeof offset)); | |
9356 | max_size -= (i + 1); | |
9357 | ||
9358 | /* Escape as much data as fits into rs->buf. */ | |
9359 | buf_len = remote_escape_output | |
124e13d9 | 9360 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9361 | |
9362 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9363 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9364 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9365 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9366 | |
9367 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9368 | |
9369 | *xfered_len = n; | |
9370 | return TARGET_XFER_OK; | |
0e7f50da UW |
9371 | } |
9372 | ||
0876f84a DJ |
9373 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9374 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9375 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9376 | The number of bytes read may be less than LEN without indicating an | |
9377 | EOF. PACKET is checked and updated to indicate whether the remote | |
9378 | target supports this object. */ | |
9379 | ||
9b409511 | 9380 | static enum target_xfer_status |
0876f84a DJ |
9381 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9382 | const char *annex, | |
9383 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9384 | ULONGEST *xfered_len, |
0876f84a DJ |
9385 | struct packet_config *packet) |
9386 | { | |
0876f84a | 9387 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9388 | LONGEST i, n, packet_len; |
9389 | ||
9390 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9391 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9392 | |
9393 | /* Check whether we've cached an end-of-object packet that matches | |
9394 | this request. */ | |
8e88304f | 9395 | if (rs->finished_object) |
0876f84a | 9396 | { |
8e88304f TT |
9397 | if (strcmp (object_name, rs->finished_object) == 0 |
9398 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9399 | && offset == rs->finished_offset) | |
9b409511 YQ |
9400 | return TARGET_XFER_EOF; |
9401 | ||
0876f84a DJ |
9402 | |
9403 | /* Otherwise, we're now reading something different. Discard | |
9404 | the cache. */ | |
8e88304f TT |
9405 | xfree (rs->finished_object); |
9406 | xfree (rs->finished_annex); | |
9407 | rs->finished_object = NULL; | |
9408 | rs->finished_annex = NULL; | |
0876f84a DJ |
9409 | } |
9410 | ||
9411 | /* Request only enough to fit in a single packet. The actual data | |
9412 | may not, since we don't know how much of it will need to be escaped; | |
9413 | the target is free to respond with slightly less data. We subtract | |
9414 | five to account for the response type and the protocol frame. */ | |
9415 | n = min (get_remote_packet_size () - 5, len); | |
9416 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9417 | object_name, annex ? annex : "", | |
9418 | phex_nz (offset, sizeof offset), | |
9419 | phex_nz (n, sizeof n)); | |
9420 | i = putpkt (rs->buf); | |
9421 | if (i < 0) | |
2ed4b548 | 9422 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9423 | |
9424 | rs->buf[0] = '\0'; | |
9425 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9426 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9427 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9428 | |
9429 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9430 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9431 | ||
9432 | /* 'm' means there is (or at least might be) more data after this | |
9433 | batch. That does not make sense unless there's at least one byte | |
9434 | of data in this reply. */ | |
9435 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9436 | error (_("Remote qXfer reply contained no data.")); | |
9437 | ||
9438 | /* Got some data. */ | |
bc20a4af PA |
9439 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9440 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9441 | |
9442 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9443 | or possibly empty. If we have the final block of a non-empty |
9444 | object, record this fact to bypass a subsequent partial read. */ | |
9445 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9446 | { |
8e88304f TT |
9447 | rs->finished_object = xstrdup (object_name); |
9448 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9449 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9450 | } |
9451 | ||
9b409511 YQ |
9452 | if (i == 0) |
9453 | return TARGET_XFER_EOF; | |
9454 | else | |
9455 | { | |
9456 | *xfered_len = i; | |
9457 | return TARGET_XFER_OK; | |
9458 | } | |
0876f84a DJ |
9459 | } |
9460 | ||
9b409511 | 9461 | static enum target_xfer_status |
4b8a223f | 9462 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9463 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9464 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9465 | ULONGEST *xfered_len) | |
c906108c | 9466 | { |
82f73884 | 9467 | struct remote_state *rs; |
c906108c | 9468 | int i; |
6d820c5c | 9469 | char *p2; |
1e3ff5ad | 9470 | char query_type; |
124e13d9 | 9471 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9472 | |
e6e4e701 | 9473 | set_remote_traceframe (); |
82f73884 PA |
9474 | set_general_thread (inferior_ptid); |
9475 | ||
9476 | rs = get_remote_state (); | |
9477 | ||
b2182ed2 | 9478 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9479 | if (object == TARGET_OBJECT_MEMORY) |
9480 | { | |
2d717e4f DJ |
9481 | /* If the remote target is connected but not running, we should |
9482 | pass this request down to a lower stratum (e.g. the executable | |
9483 | file). */ | |
9484 | if (!target_has_execution) | |
9b409511 | 9485 | return TARGET_XFER_EOF; |
2d717e4f | 9486 | |
21e3b9b9 | 9487 | if (writebuf != NULL) |
124e13d9 SM |
9488 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9489 | xfered_len); | |
21e3b9b9 | 9490 | else |
124e13d9 SM |
9491 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9492 | xfered_len); | |
21e3b9b9 DJ |
9493 | } |
9494 | ||
0df8b418 | 9495 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9496 | if (object == TARGET_OBJECT_SPU) |
9497 | { | |
9498 | if (readbuf) | |
9499 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9500 | xfered_len, &remote_protocol_packets |
9501 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9502 | else |
9503 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9504 | xfered_len, &remote_protocol_packets |
9505 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9506 | } |
9507 | ||
4aa995e1 PA |
9508 | /* Handle extra signal info using qxfer packets. */ |
9509 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9510 | { | |
9511 | if (readbuf) | |
9512 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9513 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9514 | [PACKET_qXfer_siginfo_read]); |
9515 | else | |
3e43a32a | 9516 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9517 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9518 | &remote_protocol_packets |
9519 | [PACKET_qXfer_siginfo_write]); | |
9520 | } | |
9521 | ||
0fb4aa4b PA |
9522 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9523 | { | |
9524 | if (readbuf) | |
3e43a32a | 9525 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9526 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9527 | &remote_protocol_packets |
9528 | [PACKET_qXfer_statictrace_read]); | |
9529 | else | |
2ed4b548 | 9530 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9531 | } |
9532 | ||
a76d924d DJ |
9533 | /* Only handle flash writes. */ |
9534 | if (writebuf != NULL) | |
9535 | { | |
9536 | LONGEST xfered; | |
9537 | ||
9538 | switch (object) | |
9539 | { | |
9540 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9541 | return remote_flash_write (ops, offset, len, xfered_len, |
9542 | writebuf); | |
a76d924d DJ |
9543 | |
9544 | default: | |
2ed4b548 | 9545 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9546 | } |
9547 | } | |
4b8a223f | 9548 | |
1e3ff5ad AC |
9549 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9550 | objects!!! Instead specify new query packets. */ | |
9551 | switch (object) | |
c906108c | 9552 | { |
1e3ff5ad AC |
9553 | case TARGET_OBJECT_AVR: |
9554 | query_type = 'R'; | |
9555 | break; | |
802188a7 RM |
9556 | |
9557 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9558 | gdb_assert (annex == NULL); |
9559 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9560 | xfered_len, |
0876f84a | 9561 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9562 | |
23181151 DJ |
9563 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9564 | return remote_read_qxfer | |
9b409511 | 9565 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9566 | &remote_protocol_packets[PACKET_qXfer_features]); |
9567 | ||
cfa9d6d9 DJ |
9568 | case TARGET_OBJECT_LIBRARIES: |
9569 | return remote_read_qxfer | |
9b409511 | 9570 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9571 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9572 | ||
2268b414 JK |
9573 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9574 | return remote_read_qxfer | |
9b409511 | 9575 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9576 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9577 | ||
fd79ecee DJ |
9578 | case TARGET_OBJECT_MEMORY_MAP: |
9579 | gdb_assert (annex == NULL); | |
9580 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9581 | xfered_len, |
fd79ecee DJ |
9582 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9583 | ||
07e059b5 VP |
9584 | case TARGET_OBJECT_OSDATA: |
9585 | /* Should only get here if we're connected. */ | |
5d93a237 | 9586 | gdb_assert (rs->remote_desc); |
07e059b5 | 9587 | return remote_read_qxfer |
9b409511 | 9588 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9589 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9590 | ||
dc146f7c VP |
9591 | case TARGET_OBJECT_THREADS: |
9592 | gdb_assert (annex == NULL); | |
9593 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9594 | xfered_len, |
dc146f7c VP |
9595 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9596 | ||
b3b9301e PA |
9597 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9598 | gdb_assert (annex == NULL); | |
9599 | return remote_read_qxfer | |
9b409511 | 9600 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9601 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9602 | |
9603 | case TARGET_OBJECT_FDPIC: | |
9604 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9605 | xfered_len, |
78d85199 | 9606 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9607 | |
9608 | case TARGET_OBJECT_OPENVMS_UIB: | |
9609 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9610 | xfered_len, |
169081d0 TG |
9611 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9612 | ||
9accd112 MM |
9613 | case TARGET_OBJECT_BTRACE: |
9614 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9615 | xfered_len, |
9accd112 MM |
9616 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9617 | ||
f4abbc16 MM |
9618 | case TARGET_OBJECT_BTRACE_CONF: |
9619 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9620 | len, xfered_len, | |
9621 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9622 | ||
c78fa86a GB |
9623 | case TARGET_OBJECT_EXEC_FILE: |
9624 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9625 | len, xfered_len, | |
9626 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9627 | ||
1e3ff5ad | 9628 | default: |
2ed4b548 | 9629 | return TARGET_XFER_E_IO; |
c906108c SS |
9630 | } |
9631 | ||
0df8b418 | 9632 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9633 | large enough let the caller deal with it. */ |
ea9c271d | 9634 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9635 | return TARGET_XFER_E_IO; |
ea9c271d | 9636 | len = get_remote_packet_size (); |
1e3ff5ad | 9637 | |
23860348 | 9638 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9639 | if (!rs->remote_desc) |
8a3fe4f8 | 9640 | error (_("remote query is only available after target open")); |
c906108c | 9641 | |
1e3ff5ad | 9642 | gdb_assert (annex != NULL); |
4b8a223f | 9643 | gdb_assert (readbuf != NULL); |
c906108c | 9644 | |
6d820c5c | 9645 | p2 = rs->buf; |
c906108c SS |
9646 | *p2++ = 'q'; |
9647 | *p2++ = query_type; | |
9648 | ||
23860348 MS |
9649 | /* We used one buffer char for the remote protocol q command and |
9650 | another for the query type. As the remote protocol encapsulation | |
9651 | uses 4 chars plus one extra in case we are debugging | |
9652 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9653 | string. */ | |
c906108c | 9654 | i = 0; |
ea9c271d | 9655 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9656 | { |
1e3ff5ad AC |
9657 | /* Bad caller may have sent forbidden characters. */ |
9658 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9659 | *p2++ = annex[i]; | |
c906108c SS |
9660 | i++; |
9661 | } | |
1e3ff5ad AC |
9662 | *p2 = '\0'; |
9663 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9664 | |
6d820c5c | 9665 | i = putpkt (rs->buf); |
c5aa993b | 9666 | if (i < 0) |
2ed4b548 | 9667 | return TARGET_XFER_E_IO; |
c906108c | 9668 | |
6d820c5c DJ |
9669 | getpkt (&rs->buf, &rs->buf_size, 0); |
9670 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9671 | |
9b409511 YQ |
9672 | *xfered_len = strlen ((char *) readbuf); |
9673 | return TARGET_XFER_OK; | |
c906108c SS |
9674 | } |
9675 | ||
08388c79 DE |
9676 | static int |
9677 | remote_search_memory (struct target_ops* ops, | |
9678 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9679 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9680 | CORE_ADDR *found_addrp) | |
9681 | { | |
f5656ead | 9682 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9683 | struct remote_state *rs = get_remote_state (); |
9684 | int max_size = get_memory_write_packet_size (); | |
9685 | struct packet_config *packet = | |
9686 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9687 | /* Number of packet bytes used to encode the pattern; |
9688 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9689 | int escaped_pattern_len; |
0df8b418 | 9690 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9691 | int used_pattern_len; |
9692 | int i; | |
9693 | int found; | |
9694 | ULONGEST found_addr; | |
9695 | ||
9696 | /* Don't go to the target if we don't have to. | |
9697 | This is done before checking packet->support to avoid the possibility that | |
9698 | a success for this edge case means the facility works in general. */ | |
9699 | if (pattern_len > search_space_len) | |
9700 | return 0; | |
9701 | if (pattern_len == 0) | |
9702 | { | |
9703 | *found_addrp = start_addr; | |
9704 | return 1; | |
9705 | } | |
9706 | ||
9707 | /* If we already know the packet isn't supported, fall back to the simple | |
9708 | way of searching memory. */ | |
9709 | ||
4082afcc | 9710 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9711 | { |
9712 | /* Target doesn't provided special support, fall back and use the | |
9713 | standard support (copy memory and do the search here). */ | |
9714 | return simple_search_memory (ops, start_addr, search_space_len, | |
9715 | pattern, pattern_len, found_addrp); | |
9716 | } | |
9717 | ||
28439a30 PA |
9718 | /* Make sure the remote is pointing at the right process. */ |
9719 | set_general_process (); | |
9720 | ||
08388c79 DE |
9721 | /* Insert header. */ |
9722 | i = snprintf (rs->buf, max_size, | |
9723 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9724 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9725 | phex_nz (search_space_len, sizeof (search_space_len))); |
9726 | max_size -= (i + 1); | |
9727 | ||
9728 | /* Escape as much data as fits into rs->buf. */ | |
9729 | escaped_pattern_len = | |
124e13d9 | 9730 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9731 | &used_pattern_len, max_size); |
9732 | ||
9733 | /* Bail if the pattern is too large. */ | |
9734 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9735 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9736 | |
9737 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9738 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9739 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9740 | { | |
9741 | /* The request may not have worked because the command is not | |
9742 | supported. If so, fall back to the simple way. */ | |
9743 | if (packet->support == PACKET_DISABLE) | |
9744 | { | |
9745 | return simple_search_memory (ops, start_addr, search_space_len, | |
9746 | pattern, pattern_len, found_addrp); | |
9747 | } | |
9748 | return -1; | |
9749 | } | |
9750 | ||
9751 | if (rs->buf[0] == '0') | |
9752 | found = 0; | |
9753 | else if (rs->buf[0] == '1') | |
9754 | { | |
9755 | found = 1; | |
9756 | if (rs->buf[1] != ',') | |
10e0fa18 | 9757 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9758 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9759 | *found_addrp = found_addr; | |
9760 | } | |
9761 | else | |
10e0fa18 | 9762 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9763 | |
9764 | return found; | |
9765 | } | |
9766 | ||
96baa820 | 9767 | static void |
a30bf1f1 | 9768 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9769 | struct ui_file *outbuf) |
96baa820 | 9770 | { |
d01949b6 | 9771 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9772 | char *p = rs->buf; |
96baa820 | 9773 | |
5d93a237 | 9774 | if (!rs->remote_desc) |
8a3fe4f8 | 9775 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9776 | |
23860348 | 9777 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9778 | if (command == NULL) |
9779 | command = ""; | |
9780 | ||
23860348 | 9781 | /* The query prefix. */ |
2e9f7625 DJ |
9782 | strcpy (rs->buf, "qRcmd,"); |
9783 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9784 | |
3e43a32a MS |
9785 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9786 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9787 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9788 | |
23860348 | 9789 | /* Encode the actual command. */ |
a30bf1f1 | 9790 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9791 | |
6d820c5c | 9792 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9793 | error (_("Communication problem with target.")); |
96baa820 JM |
9794 | |
9795 | /* get/display the response */ | |
9796 | while (1) | |
9797 | { | |
2e9f7625 DJ |
9798 | char *buf; |
9799 | ||
00bf0b85 | 9800 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9801 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9802 | rs->buf[0] = '\0'; |
5b37825d PW |
9803 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9804 | { | |
9805 | /* Timeout. Continue to (try to) read responses. | |
9806 | This is better than stopping with an error, assuming the stub | |
9807 | is still executing the (long) monitor command. | |
9808 | If needed, the user can interrupt gdb using C-c, obtaining | |
9809 | an effect similar to stop on timeout. */ | |
9810 | continue; | |
9811 | } | |
2e9f7625 | 9812 | buf = rs->buf; |
96baa820 | 9813 | if (buf[0] == '\0') |
8a3fe4f8 | 9814 | error (_("Target does not support this command.")); |
96baa820 JM |
9815 | if (buf[0] == 'O' && buf[1] != 'K') |
9816 | { | |
23860348 | 9817 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9818 | continue; |
9819 | } | |
9820 | if (strcmp (buf, "OK") == 0) | |
9821 | break; | |
7be570e7 JM |
9822 | if (strlen (buf) == 3 && buf[0] == 'E' |
9823 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9824 | { | |
8a3fe4f8 | 9825 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9826 | } |
96baa820 JM |
9827 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9828 | { | |
9829 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9830 | |
96baa820 JM |
9831 | fputc_unfiltered (c, outbuf); |
9832 | } | |
9833 | break; | |
9834 | } | |
9835 | } | |
9836 | ||
fd79ecee DJ |
9837 | static VEC(mem_region_s) * |
9838 | remote_memory_map (struct target_ops *ops) | |
9839 | { | |
9840 | VEC(mem_region_s) *result = NULL; | |
9841 | char *text = target_read_stralloc (¤t_target, | |
9842 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9843 | ||
9844 | if (text) | |
9845 | { | |
9846 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9847 | |
fd79ecee DJ |
9848 | result = parse_memory_map (text); |
9849 | do_cleanups (back_to); | |
9850 | } | |
9851 | ||
9852 | return result; | |
9853 | } | |
9854 | ||
c906108c | 9855 | static void |
fba45db2 | 9856 | packet_command (char *args, int from_tty) |
c906108c | 9857 | { |
d01949b6 | 9858 | struct remote_state *rs = get_remote_state (); |
c906108c | 9859 | |
5d93a237 | 9860 | if (!rs->remote_desc) |
8a3fe4f8 | 9861 | error (_("command can only be used with remote target")); |
c906108c | 9862 | |
c5aa993b | 9863 | if (!args) |
8a3fe4f8 | 9864 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9865 | |
9866 | puts_filtered ("sending: "); | |
9867 | print_packet (args); | |
9868 | puts_filtered ("\n"); | |
9869 | putpkt (args); | |
9870 | ||
6d820c5c | 9871 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9872 | puts_filtered ("received: "); |
6d820c5c | 9873 | print_packet (rs->buf); |
c906108c SS |
9874 | puts_filtered ("\n"); |
9875 | } | |
9876 | ||
9877 | #if 0 | |
23860348 | 9878 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9879 | |
a14ed312 | 9880 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9881 | |
a14ed312 | 9882 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9883 | |
a14ed312 | 9884 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9885 | |
a14ed312 | 9886 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9887 | |
23860348 | 9888 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9889 | |
a14ed312 | 9890 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9891 | |
23860348 | 9892 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9893 | |
a14ed312 | 9894 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9895 | |
a14ed312 | 9896 | static void init_remote_threadtests (void); |
c906108c | 9897 | |
23860348 | 9898 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9899 | |
9900 | static void | |
fba45db2 | 9901 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9902 | { |
9903 | int sample_thread = SAMPLE_THREAD; | |
9904 | ||
a3f17187 | 9905 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9906 | set_general_thread (sample_thread); |
c906108c SS |
9907 | } |
9908 | ||
9909 | ||
9910 | static void | |
fba45db2 | 9911 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9912 | { |
9913 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9914 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9915 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9916 | |
79d7f229 | 9917 | if (remote_thread_alive (ptid)) |
c906108c SS |
9918 | printf_filtered ("PASS: Thread alive test\n"); |
9919 | else | |
9920 | printf_filtered ("FAIL: Thread alive test\n"); | |
9921 | } | |
9922 | ||
23860348 | 9923 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9924 | |
9925 | void | |
fba45db2 | 9926 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9927 | { |
9928 | char hexid[20]; | |
9929 | ||
23860348 | 9930 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9931 | hexid[16] = 0; |
9932 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9933 | } | |
9934 | ||
9935 | static void | |
fba45db2 | 9936 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9937 | { |
9938 | int startflag = 1; | |
9939 | threadref nextthread; | |
9940 | int done, result_count; | |
9941 | threadref threadlist[3]; | |
9942 | ||
9943 | printf_filtered ("Remote Threadlist test\n"); | |
9944 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9945 | &result_count, &threadlist[0])) | |
9946 | printf_filtered ("FAIL: threadlist test\n"); | |
9947 | else | |
9948 | { | |
9949 | threadref *scan = threadlist; | |
9950 | threadref *limit = scan + result_count; | |
9951 | ||
9952 | while (scan < limit) | |
9953 | output_threadid (" thread ", scan++); | |
9954 | } | |
9955 | } | |
9956 | ||
9957 | void | |
fba45db2 | 9958 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9959 | { |
9960 | output_threadid ("Threadid: ", &info->threadid); | |
9961 | printf_filtered ("Name: %s\n ", info->shortname); | |
9962 | printf_filtered ("State: %s\n", info->display); | |
9963 | printf_filtered ("other: %s\n\n", info->more_display); | |
9964 | } | |
9965 | ||
9966 | int | |
fba45db2 | 9967 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9968 | { |
9969 | int result; | |
9970 | int set; | |
9971 | struct gdb_ext_thread_info threadinfo; | |
9972 | ||
9973 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9974 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9975 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9976 | display_thread_info (&threadinfo); | |
9977 | return result; | |
9978 | } | |
9979 | ||
9980 | static void | |
fba45db2 | 9981 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9982 | { |
9983 | int athread = SAMPLE_THREAD; | |
9984 | threadref thread; | |
9985 | int set; | |
9986 | ||
9987 | int_to_threadref (&thread, athread); | |
9988 | printf_filtered ("Remote Threadinfo test\n"); | |
9989 | if (!get_and_display_threadinfo (&thread)) | |
9990 | printf_filtered ("FAIL cannot get thread info\n"); | |
9991 | } | |
9992 | ||
9993 | static int | |
fba45db2 | 9994 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9995 | { |
9996 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9997 | return get_and_display_threadinfo (ref); | |
9998 | } | |
9999 | ||
10000 | static void | |
fba45db2 | 10001 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10002 | { |
10003 | printf_filtered ("Remote Threadlist update test\n"); | |
10004 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10005 | } | |
10006 | ||
10007 | static void | |
10008 | init_remote_threadtests (void) | |
10009 | { | |
3e43a32a MS |
10010 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10011 | _("Fetch and print the remote list of " | |
10012 | "thread identifiers, one pkt only")); | |
c906108c | 10013 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10014 | _("Fetch and display info about one thread")); |
c906108c | 10015 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10016 | _("Test setting to a different thread")); |
c906108c | 10017 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10018 | _("Iterate through updating all remote thread info")); |
c906108c | 10019 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10020 | _(" Remote thread alive test ")); |
c906108c SS |
10021 | } |
10022 | ||
10023 | #endif /* 0 */ | |
10024 | ||
f3fb8c85 MS |
10025 | /* Convert a thread ID to a string. Returns the string in a static |
10026 | buffer. */ | |
10027 | ||
10028 | static char * | |
117de6a9 | 10029 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10030 | { |
79d7f229 | 10031 | static char buf[64]; |
82f73884 | 10032 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10033 | |
7cee1e54 PA |
10034 | if (ptid_equal (ptid, null_ptid)) |
10035 | return normal_pid_to_str (ptid); | |
10036 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10037 | { |
10038 | /* Printing an inferior target id. */ | |
10039 | ||
10040 | /* When multi-process extensions are off, there's no way in the | |
10041 | remote protocol to know the remote process id, if there's any | |
10042 | at all. There's one exception --- when we're connected with | |
10043 | target extended-remote, and we manually attached to a process | |
10044 | with "attach PID". We don't record anywhere a flag that | |
10045 | allows us to distinguish that case from the case of | |
10046 | connecting with extended-remote and the stub already being | |
10047 | attached to a process, and reporting yes to qAttached, hence | |
10048 | no smart special casing here. */ | |
10049 | if (!remote_multi_process_p (rs)) | |
10050 | { | |
10051 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10052 | return buf; | |
10053 | } | |
10054 | ||
10055 | return normal_pid_to_str (ptid); | |
82f73884 | 10056 | } |
ecd0ada5 | 10057 | else |
79d7f229 | 10058 | { |
ecd0ada5 PA |
10059 | if (ptid_equal (magic_null_ptid, ptid)) |
10060 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 10061 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
10062 | if (ptid_get_lwp (ptid) == 0) |
10063 | return normal_pid_to_str (ptid); | |
10064 | else | |
10065 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10066 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10067 | else |
10068 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10069 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10070 | return buf; |
10071 | } | |
f3fb8c85 MS |
10072 | } |
10073 | ||
38691318 KB |
10074 | /* Get the address of the thread local variable in OBJFILE which is |
10075 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10076 | ||
10077 | static CORE_ADDR | |
117de6a9 PA |
10078 | remote_get_thread_local_address (struct target_ops *ops, |
10079 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10080 | { |
4082afcc | 10081 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10082 | { |
10083 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10084 | char *p = rs->buf; |
82f73884 | 10085 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10086 | enum packet_result result; |
38691318 KB |
10087 | |
10088 | strcpy (p, "qGetTLSAddr:"); | |
10089 | p += strlen (p); | |
82f73884 | 10090 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10091 | *p++ = ','; |
10092 | p += hexnumstr (p, offset); | |
10093 | *p++ = ','; | |
10094 | p += hexnumstr (p, lm); | |
10095 | *p++ = '\0'; | |
10096 | ||
6d820c5c DJ |
10097 | putpkt (rs->buf); |
10098 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10099 | result = packet_ok (rs->buf, |
10100 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10101 | if (result == PACKET_OK) |
38691318 KB |
10102 | { |
10103 | ULONGEST result; | |
10104 | ||
6d820c5c | 10105 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10106 | return result; |
10107 | } | |
571dd617 | 10108 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10109 | throw_error (TLS_GENERIC_ERROR, |
10110 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10111 | else |
109c3e39 AC |
10112 | throw_error (TLS_GENERIC_ERROR, |
10113 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10114 | } |
10115 | else | |
109c3e39 AC |
10116 | throw_error (TLS_GENERIC_ERROR, |
10117 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10118 | /* Not reached. */ |
10119 | return 0; | |
10120 | } | |
10121 | ||
711e434b PM |
10122 | /* Provide thread local base, i.e. Thread Information Block address. |
10123 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10124 | ||
70221824 | 10125 | static int |
bd7ae0f5 | 10126 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10127 | { |
4082afcc | 10128 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10129 | { |
10130 | struct remote_state *rs = get_remote_state (); | |
10131 | char *p = rs->buf; | |
10132 | char *endp = rs->buf + get_remote_packet_size (); | |
10133 | enum packet_result result; | |
10134 | ||
10135 | strcpy (p, "qGetTIBAddr:"); | |
10136 | p += strlen (p); | |
10137 | p = write_ptid (p, endp, ptid); | |
10138 | *p++ = '\0'; | |
10139 | ||
10140 | putpkt (rs->buf); | |
10141 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10142 | result = packet_ok (rs->buf, | |
10143 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10144 | if (result == PACKET_OK) | |
10145 | { | |
10146 | ULONGEST result; | |
10147 | ||
10148 | unpack_varlen_hex (rs->buf, &result); | |
10149 | if (addr) | |
10150 | *addr = (CORE_ADDR) result; | |
10151 | return 1; | |
10152 | } | |
10153 | else if (result == PACKET_UNKNOWN) | |
10154 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10155 | else | |
10156 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10157 | } | |
10158 | else | |
10159 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10160 | /* Not reached. */ | |
10161 | return 0; | |
10162 | } | |
10163 | ||
29709017 DJ |
10164 | /* Support for inferring a target description based on the current |
10165 | architecture and the size of a 'g' packet. While the 'g' packet | |
10166 | can have any size (since optional registers can be left off the | |
10167 | end), some sizes are easily recognizable given knowledge of the | |
10168 | approximate architecture. */ | |
10169 | ||
10170 | struct remote_g_packet_guess | |
10171 | { | |
10172 | int bytes; | |
10173 | const struct target_desc *tdesc; | |
10174 | }; | |
10175 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10176 | DEF_VEC_O(remote_g_packet_guess_s); | |
10177 | ||
10178 | struct remote_g_packet_data | |
10179 | { | |
10180 | VEC(remote_g_packet_guess_s) *guesses; | |
10181 | }; | |
10182 | ||
10183 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10184 | ||
10185 | static void * | |
10186 | remote_g_packet_data_init (struct obstack *obstack) | |
10187 | { | |
10188 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10189 | } | |
10190 | ||
10191 | void | |
10192 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10193 | const struct target_desc *tdesc) | |
10194 | { | |
10195 | struct remote_g_packet_data *data | |
10196 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
10197 | struct remote_g_packet_guess new_guess, *guess; | |
10198 | int ix; | |
10199 | ||
10200 | gdb_assert (tdesc != NULL); | |
10201 | ||
10202 | for (ix = 0; | |
10203 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10204 | ix++) | |
10205 | if (guess->bytes == bytes) | |
10206 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10207 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10208 | bytes); |
10209 | ||
10210 | new_guess.bytes = bytes; | |
10211 | new_guess.tdesc = tdesc; | |
10212 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10213 | } | |
10214 | ||
d962ef82 DJ |
10215 | /* Return 1 if remote_read_description would do anything on this target |
10216 | and architecture, 0 otherwise. */ | |
10217 | ||
10218 | static int | |
10219 | remote_read_description_p (struct target_ops *target) | |
10220 | { | |
10221 | struct remote_g_packet_data *data | |
f5656ead | 10222 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
10223 | |
10224 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10225 | return 1; | |
10226 | ||
10227 | return 0; | |
10228 | } | |
10229 | ||
29709017 DJ |
10230 | static const struct target_desc * |
10231 | remote_read_description (struct target_ops *target) | |
10232 | { | |
10233 | struct remote_g_packet_data *data | |
f5656ead | 10234 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 10235 | |
d962ef82 DJ |
10236 | /* Do not try this during initial connection, when we do not know |
10237 | whether there is a running but stopped thread. */ | |
10238 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10239 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10240 | |
29709017 DJ |
10241 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10242 | { | |
10243 | struct remote_g_packet_guess *guess; | |
10244 | int ix; | |
10245 | int bytes = send_g_packet (); | |
10246 | ||
10247 | for (ix = 0; | |
10248 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10249 | ix++) | |
10250 | if (guess->bytes == bytes) | |
10251 | return guess->tdesc; | |
10252 | ||
10253 | /* We discard the g packet. A minor optimization would be to | |
10254 | hold on to it, and fill the register cache once we have selected | |
10255 | an architecture, but it's too tricky to do safely. */ | |
10256 | } | |
10257 | ||
2117c711 | 10258 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10259 | } |
10260 | ||
a6b151f1 DJ |
10261 | /* Remote file transfer support. This is host-initiated I/O, not |
10262 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10263 | ||
10264 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10265 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10266 | decrease *LEFT. Otherwise raise an error. */ | |
10267 | ||
10268 | static void | |
10269 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10270 | { | |
10271 | int len = strlen (string); | |
10272 | ||
10273 | if (len > *left) | |
10274 | error (_("Packet too long for target.")); | |
10275 | ||
10276 | memcpy (*buffer, string, len); | |
10277 | *buffer += len; | |
10278 | *left -= len; | |
10279 | ||
10280 | /* NUL-terminate the buffer as a convenience, if there is | |
10281 | room. */ | |
10282 | if (*left) | |
10283 | **buffer = '\0'; | |
10284 | } | |
10285 | ||
10286 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10287 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10288 | decrease *LEFT. Otherwise raise an error. */ | |
10289 | ||
10290 | static void | |
10291 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10292 | int len) | |
10293 | { | |
10294 | if (2 * len > *left) | |
10295 | error (_("Packet too long for target.")); | |
10296 | ||
10297 | bin2hex (bytes, *buffer, len); | |
10298 | *buffer += 2 * len; | |
10299 | *left -= 2 * len; | |
10300 | ||
10301 | /* NUL-terminate the buffer as a convenience, if there is | |
10302 | room. */ | |
10303 | if (*left) | |
10304 | **buffer = '\0'; | |
10305 | } | |
10306 | ||
10307 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10308 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10309 | decrease *LEFT. Otherwise raise an error. */ | |
10310 | ||
10311 | static void | |
10312 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10313 | { | |
10314 | int len = hexnumlen (value); | |
10315 | ||
10316 | if (len > *left) | |
10317 | error (_("Packet too long for target.")); | |
10318 | ||
10319 | hexnumstr (*buffer, value); | |
10320 | *buffer += len; | |
10321 | *left -= len; | |
10322 | ||
10323 | /* NUL-terminate the buffer as a convenience, if there is | |
10324 | room. */ | |
10325 | if (*left) | |
10326 | **buffer = '\0'; | |
10327 | } | |
10328 | ||
10329 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10330 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10331 | was included, and *ATTACHMENT to point to the start of the annex | |
10332 | if any. The length of the packet isn't needed here; there may | |
10333 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10334 | ||
10335 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10336 | -1 is returned, the other variables may not be initialized. */ | |
10337 | ||
10338 | static int | |
10339 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10340 | int *remote_errno, char **attachment) | |
10341 | { | |
10342 | char *p, *p2; | |
10343 | ||
10344 | *remote_errno = 0; | |
10345 | *attachment = NULL; | |
10346 | ||
10347 | if (buffer[0] != 'F') | |
10348 | return -1; | |
10349 | ||
10350 | errno = 0; | |
10351 | *retcode = strtol (&buffer[1], &p, 16); | |
10352 | if (errno != 0 || p == &buffer[1]) | |
10353 | return -1; | |
10354 | ||
10355 | /* Check for ",errno". */ | |
10356 | if (*p == ',') | |
10357 | { | |
10358 | errno = 0; | |
10359 | *remote_errno = strtol (p + 1, &p2, 16); | |
10360 | if (errno != 0 || p + 1 == p2) | |
10361 | return -1; | |
10362 | p = p2; | |
10363 | } | |
10364 | ||
10365 | /* Check for ";attachment". If there is no attachment, the | |
10366 | packet should end here. */ | |
10367 | if (*p == ';') | |
10368 | { | |
10369 | *attachment = p + 1; | |
10370 | return 0; | |
10371 | } | |
10372 | else if (*p == '\0') | |
10373 | return 0; | |
10374 | else | |
10375 | return -1; | |
10376 | } | |
10377 | ||
10378 | /* Send a prepared I/O packet to the target and read its response. | |
10379 | The prepared packet is in the global RS->BUF before this function | |
10380 | is called, and the answer is there when we return. | |
10381 | ||
10382 | COMMAND_BYTES is the length of the request to send, which may include | |
10383 | binary data. WHICH_PACKET is the packet configuration to check | |
10384 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10385 | is set to the error number and -1 is returned. Otherwise the value | |
10386 | returned by the function is returned. | |
10387 | ||
10388 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10389 | attachment is expected; an error will be reported if there's a | |
10390 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10391 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10392 | attachment's length. */ | |
10393 | ||
10394 | static int | |
10395 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10396 | int *remote_errno, char **attachment, | |
10397 | int *attachment_len) | |
10398 | { | |
10399 | struct remote_state *rs = get_remote_state (); | |
10400 | int ret, bytes_read; | |
10401 | char *attachment_tmp; | |
10402 | ||
5d93a237 | 10403 | if (!rs->remote_desc |
4082afcc | 10404 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10405 | { |
10406 | *remote_errno = FILEIO_ENOSYS; | |
10407 | return -1; | |
10408 | } | |
10409 | ||
10410 | putpkt_binary (rs->buf, command_bytes); | |
10411 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10412 | ||
10413 | /* If it timed out, something is wrong. Don't try to parse the | |
10414 | buffer. */ | |
10415 | if (bytes_read < 0) | |
10416 | { | |
10417 | *remote_errno = FILEIO_EINVAL; | |
10418 | return -1; | |
10419 | } | |
10420 | ||
10421 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10422 | { | |
10423 | case PACKET_ERROR: | |
10424 | *remote_errno = FILEIO_EINVAL; | |
10425 | return -1; | |
10426 | case PACKET_UNKNOWN: | |
10427 | *remote_errno = FILEIO_ENOSYS; | |
10428 | return -1; | |
10429 | case PACKET_OK: | |
10430 | break; | |
10431 | } | |
10432 | ||
10433 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10434 | &attachment_tmp)) | |
10435 | { | |
10436 | *remote_errno = FILEIO_EINVAL; | |
10437 | return -1; | |
10438 | } | |
10439 | ||
10440 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10441 | if ((attachment_tmp == NULL && attachment != NULL) | |
10442 | || (attachment_tmp != NULL && attachment == NULL)) | |
10443 | { | |
10444 | *remote_errno = FILEIO_EINVAL; | |
10445 | return -1; | |
10446 | } | |
10447 | ||
10448 | /* If an attachment was found, it must point into the packet buffer; | |
10449 | work out how many bytes there were. */ | |
10450 | if (attachment_tmp != NULL) | |
10451 | { | |
10452 | *attachment = attachment_tmp; | |
10453 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10454 | } | |
10455 | ||
10456 | return ret; | |
10457 | } | |
10458 | ||
80152258 PA |
10459 | /* Invalidate the readahead cache. */ |
10460 | ||
10461 | static void | |
10462 | readahead_cache_invalidate (void) | |
10463 | { | |
10464 | struct remote_state *rs = get_remote_state (); | |
10465 | ||
10466 | rs->readahead_cache.fd = -1; | |
10467 | } | |
10468 | ||
10469 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10470 | ||
10471 | static void | |
10472 | readahead_cache_invalidate_fd (int fd) | |
10473 | { | |
10474 | struct remote_state *rs = get_remote_state (); | |
10475 | ||
10476 | if (rs->readahead_cache.fd == fd) | |
10477 | rs->readahead_cache.fd = -1; | |
10478 | } | |
10479 | ||
15a201c8 GB |
10480 | /* Set the filesystem remote_hostio functions that take FILENAME |
10481 | arguments will use. Return 0 on success, or -1 if an error | |
10482 | occurs (and set *REMOTE_ERRNO). */ | |
10483 | ||
10484 | static int | |
10485 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10486 | { | |
10487 | struct remote_state *rs = get_remote_state (); | |
10488 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10489 | char *p = rs->buf; | |
10490 | int left = get_remote_packet_size () - 1; | |
10491 | char arg[9]; | |
10492 | int ret; | |
10493 | ||
10494 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10495 | return 0; | |
10496 | ||
10497 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10498 | return 0; | |
10499 | ||
10500 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10501 | ||
10502 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10503 | remote_buffer_add_string (&p, &left, arg); | |
10504 | ||
10505 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10506 | remote_errno, NULL, NULL); | |
10507 | ||
10508 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10509 | return 0; | |
10510 | ||
10511 | if (ret == 0) | |
10512 | rs->fs_pid = required_pid; | |
10513 | ||
10514 | return ret; | |
10515 | } | |
10516 | ||
12e2a5fd | 10517 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10518 | |
10519 | static int | |
cd897586 | 10520 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 10521 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
10522 | int flags, int mode, int warn_if_slow, |
10523 | int *remote_errno) | |
a6b151f1 DJ |
10524 | { |
10525 | struct remote_state *rs = get_remote_state (); | |
10526 | char *p = rs->buf; | |
10527 | int left = get_remote_packet_size () - 1; | |
10528 | ||
4313b8c0 GB |
10529 | if (warn_if_slow) |
10530 | { | |
10531 | static int warning_issued = 0; | |
10532 | ||
10533 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
10534 | filename); | |
10535 | ||
10536 | if (!warning_issued) | |
10537 | { | |
10538 | warning (_("File transfers from remote targets can be slow." | |
10539 | " Use \"set sysroot\" to access files locally" | |
10540 | " instead.")); | |
10541 | warning_issued = 1; | |
10542 | } | |
10543 | } | |
10544 | ||
15a201c8 GB |
10545 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10546 | return -1; | |
10547 | ||
a6b151f1 DJ |
10548 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10549 | ||
10550 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10551 | strlen (filename)); | |
10552 | remote_buffer_add_string (&p, &left, ","); | |
10553 | ||
10554 | remote_buffer_add_int (&p, &left, flags); | |
10555 | remote_buffer_add_string (&p, &left, ","); | |
10556 | ||
10557 | remote_buffer_add_int (&p, &left, mode); | |
10558 | ||
10559 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10560 | remote_errno, NULL, NULL); | |
10561 | } | |
10562 | ||
12e2a5fd | 10563 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10564 | |
10565 | static int | |
0d866f62 TT |
10566 | remote_hostio_pwrite (struct target_ops *self, |
10567 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10568 | ULONGEST offset, int *remote_errno) |
10569 | { | |
10570 | struct remote_state *rs = get_remote_state (); | |
10571 | char *p = rs->buf; | |
10572 | int left = get_remote_packet_size (); | |
10573 | int out_len; | |
10574 | ||
80152258 PA |
10575 | readahead_cache_invalidate_fd (fd); |
10576 | ||
a6b151f1 DJ |
10577 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
10578 | ||
10579 | remote_buffer_add_int (&p, &left, fd); | |
10580 | remote_buffer_add_string (&p, &left, ","); | |
10581 | ||
10582 | remote_buffer_add_int (&p, &left, offset); | |
10583 | remote_buffer_add_string (&p, &left, ","); | |
10584 | ||
124e13d9 | 10585 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10586 | get_remote_packet_size () - (p - rs->buf)); |
10587 | ||
10588 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10589 | remote_errno, NULL, NULL); | |
10590 | } | |
10591 | ||
80152258 PA |
10592 | /* Helper for the implementation of to_fileio_pread. Read the file |
10593 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
10594 | |
10595 | static int | |
80152258 PA |
10596 | remote_hostio_pread_vFile (struct target_ops *self, |
10597 | int fd, gdb_byte *read_buf, int len, | |
10598 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
10599 | { |
10600 | struct remote_state *rs = get_remote_state (); | |
10601 | char *p = rs->buf; | |
10602 | char *attachment; | |
10603 | int left = get_remote_packet_size (); | |
10604 | int ret, attachment_len; | |
10605 | int read_len; | |
10606 | ||
10607 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10608 | ||
10609 | remote_buffer_add_int (&p, &left, fd); | |
10610 | remote_buffer_add_string (&p, &left, ","); | |
10611 | ||
10612 | remote_buffer_add_int (&p, &left, len); | |
10613 | remote_buffer_add_string (&p, &left, ","); | |
10614 | ||
10615 | remote_buffer_add_int (&p, &left, offset); | |
10616 | ||
10617 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10618 | remote_errno, &attachment, | |
10619 | &attachment_len); | |
10620 | ||
10621 | if (ret < 0) | |
10622 | return ret; | |
10623 | ||
bc20a4af | 10624 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10625 | read_buf, len); |
10626 | if (read_len != ret) | |
10627 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10628 | ||
10629 | return ret; | |
10630 | } | |
10631 | ||
80152258 PA |
10632 | /* Serve pread from the readahead cache. Returns number of bytes |
10633 | read, or 0 if the request can't be served from the cache. */ | |
10634 | ||
10635 | static int | |
10636 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
10637 | int fd, gdb_byte *read_buf, size_t len, | |
10638 | ULONGEST offset) | |
10639 | { | |
10640 | struct readahead_cache *cache = &rs->readahead_cache; | |
10641 | ||
10642 | if (cache->fd == fd | |
10643 | && cache->offset <= offset | |
10644 | && offset < cache->offset + cache->bufsize) | |
10645 | { | |
10646 | ULONGEST max = cache->offset + cache->bufsize; | |
10647 | ||
10648 | if (offset + len > max) | |
10649 | len = max - offset; | |
10650 | ||
10651 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
10652 | return len; | |
10653 | } | |
10654 | ||
10655 | return 0; | |
10656 | } | |
10657 | ||
10658 | /* Implementation of to_fileio_pread. */ | |
10659 | ||
10660 | static int | |
10661 | remote_hostio_pread (struct target_ops *self, | |
10662 | int fd, gdb_byte *read_buf, int len, | |
10663 | ULONGEST offset, int *remote_errno) | |
10664 | { | |
10665 | int ret; | |
10666 | struct remote_state *rs = get_remote_state (); | |
10667 | struct readahead_cache *cache = &rs->readahead_cache; | |
10668 | ||
10669 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10670 | if (ret > 0) | |
10671 | { | |
10672 | cache->hit_count++; | |
10673 | ||
10674 | if (remote_debug) | |
10675 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
10676 | pulongest (cache->hit_count)); | |
10677 | return ret; | |
10678 | } | |
10679 | ||
10680 | cache->miss_count++; | |
10681 | if (remote_debug) | |
10682 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
10683 | pulongest (cache->miss_count)); | |
10684 | ||
10685 | cache->fd = fd; | |
10686 | cache->offset = offset; | |
10687 | cache->bufsize = get_remote_packet_size (); | |
10688 | cache->buf = xrealloc (cache->buf, cache->bufsize); | |
10689 | ||
10690 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
10691 | cache->offset, remote_errno); | |
10692 | if (ret <= 0) | |
10693 | { | |
10694 | readahead_cache_invalidate_fd (fd); | |
10695 | return ret; | |
10696 | } | |
10697 | ||
10698 | cache->bufsize = ret; | |
10699 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10700 | } | |
10701 | ||
12e2a5fd | 10702 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
10703 | |
10704 | static int | |
df39ea25 | 10705 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10706 | { |
10707 | struct remote_state *rs = get_remote_state (); | |
10708 | char *p = rs->buf; | |
10709 | int left = get_remote_packet_size () - 1; | |
10710 | ||
80152258 PA |
10711 | readahead_cache_invalidate_fd (fd); |
10712 | ||
a6b151f1 DJ |
10713 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
10714 | ||
10715 | remote_buffer_add_int (&p, &left, fd); | |
10716 | ||
10717 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10718 | remote_errno, NULL, NULL); | |
10719 | } | |
10720 | ||
12e2a5fd | 10721 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
10722 | |
10723 | static int | |
dbbca37d | 10724 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
10725 | struct inferior *inf, const char *filename, |
10726 | int *remote_errno) | |
a6b151f1 DJ |
10727 | { |
10728 | struct remote_state *rs = get_remote_state (); | |
10729 | char *p = rs->buf; | |
10730 | int left = get_remote_packet_size () - 1; | |
10731 | ||
15a201c8 GB |
10732 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10733 | return -1; | |
10734 | ||
a6b151f1 DJ |
10735 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10736 | ||
10737 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10738 | strlen (filename)); | |
10739 | ||
10740 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10741 | remote_errno, NULL, NULL); | |
10742 | } | |
10743 | ||
12e2a5fd | 10744 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
10745 | |
10746 | static char * | |
fab5aa7c | 10747 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
10748 | struct inferior *inf, const char *filename, |
10749 | int *remote_errno) | |
b9e7b9c3 UW |
10750 | { |
10751 | struct remote_state *rs = get_remote_state (); | |
10752 | char *p = rs->buf; | |
10753 | char *attachment; | |
10754 | int left = get_remote_packet_size (); | |
10755 | int len, attachment_len; | |
10756 | int read_len; | |
10757 | char *ret; | |
10758 | ||
15a201c8 GB |
10759 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10760 | return NULL; | |
10761 | ||
b9e7b9c3 UW |
10762 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10763 | ||
10764 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10765 | strlen (filename)); | |
10766 | ||
10767 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10768 | remote_errno, &attachment, | |
10769 | &attachment_len); | |
10770 | ||
10771 | if (len < 0) | |
10772 | return NULL; | |
10773 | ||
10774 | ret = xmalloc (len + 1); | |
10775 | ||
bc20a4af PA |
10776 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10777 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10778 | if (read_len != len) |
10779 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10780 | ||
10781 | ret[len] = '\0'; | |
10782 | return ret; | |
10783 | } | |
10784 | ||
12e2a5fd | 10785 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
10786 | |
10787 | static int | |
10788 | remote_hostio_fstat (struct target_ops *self, | |
10789 | int fd, struct stat *st, | |
10790 | int *remote_errno) | |
10791 | { | |
10792 | struct remote_state *rs = get_remote_state (); | |
10793 | char *p = rs->buf; | |
10794 | int left = get_remote_packet_size (); | |
10795 | int attachment_len, ret; | |
10796 | char *attachment; | |
10797 | struct fio_stat fst; | |
10798 | int read_len; | |
10799 | ||
464b0089 GB |
10800 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10801 | ||
10802 | remote_buffer_add_int (&p, &left, fd); | |
10803 | ||
10804 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10805 | remote_errno, &attachment, | |
10806 | &attachment_len); | |
10807 | if (ret < 0) | |
0a93529c | 10808 | { |
464b0089 GB |
10809 | if (*remote_errno != FILEIO_ENOSYS) |
10810 | return ret; | |
10811 | ||
0a93529c GB |
10812 | /* Strictly we should return -1, ENOSYS here, but when |
10813 | "set sysroot remote:" was implemented in August 2008 | |
10814 | BFD's need for a stat function was sidestepped with | |
10815 | this hack. This was not remedied until March 2015 | |
10816 | so we retain the previous behavior to avoid breaking | |
10817 | compatibility. | |
10818 | ||
10819 | Note that the memset is a March 2015 addition; older | |
10820 | GDBs set st_size *and nothing else* so the structure | |
10821 | would have garbage in all other fields. This might | |
10822 | break something but retaining the previous behavior | |
10823 | here would be just too wrong. */ | |
10824 | ||
10825 | memset (st, 0, sizeof (struct stat)); | |
10826 | st->st_size = INT_MAX; | |
10827 | return 0; | |
10828 | } | |
10829 | ||
0a93529c GB |
10830 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10831 | (gdb_byte *) &fst, sizeof (fst)); | |
10832 | ||
10833 | if (read_len != ret) | |
10834 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10835 | ||
10836 | if (read_len != sizeof (fst)) | |
10837 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10838 | read_len, (int) sizeof (fst)); | |
10839 | ||
10840 | remote_fileio_to_host_stat (&fst, st); | |
10841 | ||
10842 | return 0; | |
10843 | } | |
10844 | ||
12e2a5fd | 10845 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
10846 | |
10847 | static int | |
10848 | remote_filesystem_is_local (struct target_ops *self) | |
10849 | { | |
10850 | /* Valgrind GDB presents itself as a remote target but works | |
10851 | on the local filesystem: it does not implement remote get | |
10852 | and users are not expected to set a sysroot. To handle | |
10853 | this case we treat the remote filesystem as local if the | |
10854 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
10855 | does not support vFile:open. */ | |
a3be80c3 | 10856 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
10857 | { |
10858 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
10859 | ||
10860 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
10861 | { | |
10862 | int fd, remote_errno; | |
10863 | ||
10864 | /* Try opening a file to probe support. The supplied | |
10865 | filename is irrelevant, we only care about whether | |
10866 | the stub recognizes the packet or not. */ | |
07c138c8 | 10867 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 10868 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
10869 | &remote_errno); |
10870 | ||
10871 | if (fd >= 0) | |
10872 | remote_hostio_close (self, fd, &remote_errno); | |
10873 | ||
10874 | ps = packet_support (PACKET_vFile_open); | |
10875 | } | |
10876 | ||
10877 | if (ps == PACKET_DISABLE) | |
10878 | { | |
10879 | static int warning_issued = 0; | |
10880 | ||
10881 | if (!warning_issued) | |
10882 | { | |
10883 | warning (_("remote target does not support file" | |
10884 | " transfer, attempting to access files" | |
10885 | " from local filesystem.")); | |
10886 | warning_issued = 1; | |
10887 | } | |
10888 | ||
10889 | return 1; | |
10890 | } | |
10891 | } | |
10892 | ||
10893 | return 0; | |
10894 | } | |
10895 | ||
a6b151f1 DJ |
10896 | static int |
10897 | remote_fileio_errno_to_host (int errnum) | |
10898 | { | |
10899 | switch (errnum) | |
10900 | { | |
10901 | case FILEIO_EPERM: | |
10902 | return EPERM; | |
10903 | case FILEIO_ENOENT: | |
10904 | return ENOENT; | |
10905 | case FILEIO_EINTR: | |
10906 | return EINTR; | |
10907 | case FILEIO_EIO: | |
10908 | return EIO; | |
10909 | case FILEIO_EBADF: | |
10910 | return EBADF; | |
10911 | case FILEIO_EACCES: | |
10912 | return EACCES; | |
10913 | case FILEIO_EFAULT: | |
10914 | return EFAULT; | |
10915 | case FILEIO_EBUSY: | |
10916 | return EBUSY; | |
10917 | case FILEIO_EEXIST: | |
10918 | return EEXIST; | |
10919 | case FILEIO_ENODEV: | |
10920 | return ENODEV; | |
10921 | case FILEIO_ENOTDIR: | |
10922 | return ENOTDIR; | |
10923 | case FILEIO_EISDIR: | |
10924 | return EISDIR; | |
10925 | case FILEIO_EINVAL: | |
10926 | return EINVAL; | |
10927 | case FILEIO_ENFILE: | |
10928 | return ENFILE; | |
10929 | case FILEIO_EMFILE: | |
10930 | return EMFILE; | |
10931 | case FILEIO_EFBIG: | |
10932 | return EFBIG; | |
10933 | case FILEIO_ENOSPC: | |
10934 | return ENOSPC; | |
10935 | case FILEIO_ESPIPE: | |
10936 | return ESPIPE; | |
10937 | case FILEIO_EROFS: | |
10938 | return EROFS; | |
10939 | case FILEIO_ENOSYS: | |
10940 | return ENOSYS; | |
10941 | case FILEIO_ENAMETOOLONG: | |
10942 | return ENAMETOOLONG; | |
10943 | } | |
10944 | return -1; | |
10945 | } | |
10946 | ||
10947 | static char * | |
10948 | remote_hostio_error (int errnum) | |
10949 | { | |
10950 | int host_error = remote_fileio_errno_to_host (errnum); | |
10951 | ||
10952 | if (host_error == -1) | |
10953 | error (_("Unknown remote I/O error %d"), errnum); | |
10954 | else | |
10955 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10956 | } | |
10957 | ||
a6b151f1 DJ |
10958 | static void |
10959 | remote_hostio_close_cleanup (void *opaque) | |
10960 | { | |
10961 | int fd = *(int *) opaque; | |
10962 | int remote_errno; | |
10963 | ||
df39ea25 | 10964 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
10965 | } |
10966 | ||
10967 | void | |
10968 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10969 | { | |
10970 | struct cleanup *back_to, *close_cleanup; | |
10971 | int retcode, fd, remote_errno, bytes, io_size; | |
10972 | FILE *file; | |
10973 | gdb_byte *buffer; | |
10974 | int bytes_in_buffer; | |
10975 | int saw_eof; | |
10976 | ULONGEST offset; | |
5d93a237 | 10977 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10978 | |
5d93a237 | 10979 | if (!rs->remote_desc) |
a6b151f1 DJ |
10980 | error (_("command can only be used with remote target")); |
10981 | ||
614c279d | 10982 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10983 | if (file == NULL) |
10984 | perror_with_name (local_file); | |
7c8a8b04 | 10985 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10986 | |
07c138c8 | 10987 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 10988 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 10989 | | FILEIO_O_TRUNC), |
4313b8c0 | 10990 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
10991 | if (fd == -1) |
10992 | remote_hostio_error (remote_errno); | |
10993 | ||
10994 | /* Send up to this many bytes at once. They won't all fit in the | |
10995 | remote packet limit, so we'll transfer slightly fewer. */ | |
10996 | io_size = get_remote_packet_size (); | |
10997 | buffer = xmalloc (io_size); | |
10998 | make_cleanup (xfree, buffer); | |
10999 | ||
11000 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11001 | ||
11002 | bytes_in_buffer = 0; | |
11003 | saw_eof = 0; | |
11004 | offset = 0; | |
11005 | while (bytes_in_buffer || !saw_eof) | |
11006 | { | |
11007 | if (!saw_eof) | |
11008 | { | |
3e43a32a MS |
11009 | bytes = fread (buffer + bytes_in_buffer, 1, |
11010 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11011 | file); |
11012 | if (bytes == 0) | |
11013 | { | |
11014 | if (ferror (file)) | |
11015 | error (_("Error reading %s."), local_file); | |
11016 | else | |
11017 | { | |
11018 | /* EOF. Unless there is something still in the | |
11019 | buffer from the last iteration, we are done. */ | |
11020 | saw_eof = 1; | |
11021 | if (bytes_in_buffer == 0) | |
11022 | break; | |
11023 | } | |
11024 | } | |
11025 | } | |
11026 | else | |
11027 | bytes = 0; | |
11028 | ||
11029 | bytes += bytes_in_buffer; | |
11030 | bytes_in_buffer = 0; | |
11031 | ||
0d866f62 TT |
11032 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11033 | fd, buffer, bytes, | |
3e43a32a | 11034 | offset, &remote_errno); |
a6b151f1 DJ |
11035 | |
11036 | if (retcode < 0) | |
11037 | remote_hostio_error (remote_errno); | |
11038 | else if (retcode == 0) | |
11039 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11040 | else if (retcode < bytes) | |
11041 | { | |
11042 | /* Short write. Save the rest of the read data for the next | |
11043 | write. */ | |
11044 | bytes_in_buffer = bytes - retcode; | |
11045 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11046 | } | |
11047 | ||
11048 | offset += retcode; | |
11049 | } | |
11050 | ||
11051 | discard_cleanups (close_cleanup); | |
df39ea25 | 11052 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11053 | remote_hostio_error (remote_errno); |
11054 | ||
11055 | if (from_tty) | |
11056 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11057 | do_cleanups (back_to); | |
11058 | } | |
11059 | ||
11060 | void | |
11061 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11062 | { | |
11063 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11064 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11065 | FILE *file; |
11066 | gdb_byte *buffer; | |
11067 | ULONGEST offset; | |
5d93a237 | 11068 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11069 | |
5d93a237 | 11070 | if (!rs->remote_desc) |
a6b151f1 DJ |
11071 | error (_("command can only be used with remote target")); |
11072 | ||
07c138c8 | 11073 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11074 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11075 | &remote_errno); | |
a6b151f1 DJ |
11076 | if (fd == -1) |
11077 | remote_hostio_error (remote_errno); | |
11078 | ||
614c279d | 11079 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11080 | if (file == NULL) |
11081 | perror_with_name (local_file); | |
7c8a8b04 | 11082 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11083 | |
11084 | /* Send up to this many bytes at once. They won't all fit in the | |
11085 | remote packet limit, so we'll transfer slightly fewer. */ | |
11086 | io_size = get_remote_packet_size (); | |
11087 | buffer = xmalloc (io_size); | |
11088 | make_cleanup (xfree, buffer); | |
11089 | ||
11090 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11091 | ||
11092 | offset = 0; | |
11093 | while (1) | |
11094 | { | |
a3be983c TT |
11095 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11096 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11097 | if (bytes == 0) |
11098 | /* Success, but no bytes, means end-of-file. */ | |
11099 | break; | |
11100 | if (bytes == -1) | |
11101 | remote_hostio_error (remote_errno); | |
11102 | ||
11103 | offset += bytes; | |
11104 | ||
11105 | bytes = fwrite (buffer, 1, bytes, file); | |
11106 | if (bytes == 0) | |
11107 | perror_with_name (local_file); | |
11108 | } | |
11109 | ||
11110 | discard_cleanups (close_cleanup); | |
df39ea25 | 11111 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11112 | remote_hostio_error (remote_errno); |
11113 | ||
11114 | if (from_tty) | |
11115 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11116 | do_cleanups (back_to); | |
11117 | } | |
11118 | ||
11119 | void | |
11120 | remote_file_delete (const char *remote_file, int from_tty) | |
11121 | { | |
11122 | int retcode, remote_errno; | |
5d93a237 | 11123 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11124 | |
5d93a237 | 11125 | if (!rs->remote_desc) |
a6b151f1 DJ |
11126 | error (_("command can only be used with remote target")); |
11127 | ||
dbbca37d | 11128 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11129 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11130 | if (retcode == -1) |
11131 | remote_hostio_error (remote_errno); | |
11132 | ||
11133 | if (from_tty) | |
11134 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11135 | } | |
11136 | ||
11137 | static void | |
11138 | remote_put_command (char *args, int from_tty) | |
11139 | { | |
11140 | struct cleanup *back_to; | |
11141 | char **argv; | |
11142 | ||
d1a41061 PP |
11143 | if (args == NULL) |
11144 | error_no_arg (_("file to put")); | |
11145 | ||
11146 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11147 | back_to = make_cleanup_freeargv (argv); |
11148 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11149 | error (_("Invalid parameters to remote put")); | |
11150 | ||
11151 | remote_file_put (argv[0], argv[1], from_tty); | |
11152 | ||
11153 | do_cleanups (back_to); | |
11154 | } | |
11155 | ||
11156 | static void | |
11157 | remote_get_command (char *args, int from_tty) | |
11158 | { | |
11159 | struct cleanup *back_to; | |
11160 | char **argv; | |
11161 | ||
d1a41061 PP |
11162 | if (args == NULL) |
11163 | error_no_arg (_("file to get")); | |
11164 | ||
11165 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11166 | back_to = make_cleanup_freeargv (argv); |
11167 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11168 | error (_("Invalid parameters to remote get")); | |
11169 | ||
11170 | remote_file_get (argv[0], argv[1], from_tty); | |
11171 | ||
11172 | do_cleanups (back_to); | |
11173 | } | |
11174 | ||
11175 | static void | |
11176 | remote_delete_command (char *args, int from_tty) | |
11177 | { | |
11178 | struct cleanup *back_to; | |
11179 | char **argv; | |
11180 | ||
d1a41061 PP |
11181 | if (args == NULL) |
11182 | error_no_arg (_("file to delete")); | |
11183 | ||
11184 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11185 | back_to = make_cleanup_freeargv (argv); |
11186 | if (argv[0] == NULL || argv[1] != NULL) | |
11187 | error (_("Invalid parameters to remote delete")); | |
11188 | ||
11189 | remote_file_delete (argv[0], from_tty); | |
11190 | ||
11191 | do_cleanups (back_to); | |
11192 | } | |
11193 | ||
11194 | static void | |
11195 | remote_command (char *args, int from_tty) | |
11196 | { | |
635c7e8a | 11197 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11198 | } |
11199 | ||
b2175913 | 11200 | static int |
19db3e69 | 11201 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11202 | { |
4082afcc PA |
11203 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11204 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11205 | return 1; |
11206 | else | |
11207 | return 0; | |
b2175913 MS |
11208 | } |
11209 | ||
74531fed | 11210 | static int |
2a9a2795 | 11211 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11212 | { |
11213 | return 1; | |
11214 | } | |
11215 | ||
03583c20 | 11216 | static int |
2bfc0540 | 11217 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11218 | { |
11219 | /* Only supported in extended mode. */ | |
11220 | return 0; | |
11221 | } | |
11222 | ||
8a305172 | 11223 | static int |
86ce2668 | 11224 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11225 | { |
11226 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11227 | |
901f9912 UW |
11228 | /* Only extended-remote handles being attached to multiple |
11229 | processes, even though plain remote can use the multi-process | |
11230 | thread id extensions, so that GDB knows the target process's | |
11231 | PID. */ | |
11232 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
11233 | } |
11234 | ||
70221824 | 11235 | static int |
782b2b07 SS |
11236 | remote_supports_cond_tracepoints (void) |
11237 | { | |
4082afcc | 11238 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11239 | } |
11240 | ||
3788aec7 | 11241 | static int |
efcc2da7 | 11242 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11243 | { |
4082afcc | 11244 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11245 | } |
11246 | ||
70221824 | 11247 | static int |
7a697b8d SS |
11248 | remote_supports_fast_tracepoints (void) |
11249 | { | |
4082afcc | 11250 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11251 | } |
11252 | ||
0fb4aa4b PA |
11253 | static int |
11254 | remote_supports_static_tracepoints (void) | |
11255 | { | |
4082afcc | 11256 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11257 | } |
11258 | ||
1e4d1764 YQ |
11259 | static int |
11260 | remote_supports_install_in_trace (void) | |
11261 | { | |
4082afcc | 11262 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11263 | } |
11264 | ||
d248b706 | 11265 | static int |
7d178d6a | 11266 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11267 | { |
4082afcc PA |
11268 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11269 | == PACKET_ENABLE); | |
d248b706 KY |
11270 | } |
11271 | ||
3065dfb6 | 11272 | static int |
6de37a3a | 11273 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11274 | { |
4082afcc | 11275 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11276 | } |
11277 | ||
d3ce09f5 | 11278 | static int |
78eff0ec | 11279 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11280 | { |
4082afcc | 11281 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11282 | } |
11283 | ||
35b1e5cc | 11284 | static void |
ecae04e1 | 11285 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11286 | { |
11287 | putpkt ("QTinit"); | |
11288 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11289 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11290 | error (_("Target does not support this command.")); |
11291 | } | |
11292 | ||
11293 | static void free_actions_list (char **actions_list); | |
11294 | static void free_actions_list_cleanup_wrapper (void *); | |
11295 | static void | |
11296 | free_actions_list_cleanup_wrapper (void *al) | |
11297 | { | |
11298 | free_actions_list (al); | |
11299 | } | |
11300 | ||
11301 | static void | |
11302 | free_actions_list (char **actions_list) | |
11303 | { | |
11304 | int ndx; | |
11305 | ||
11306 | if (actions_list == 0) | |
11307 | return; | |
11308 | ||
11309 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11310 | xfree (actions_list[ndx]); | |
11311 | ||
11312 | xfree (actions_list); | |
11313 | } | |
11314 | ||
409873ef SS |
11315 | /* Recursive routine to walk through command list including loops, and |
11316 | download packets for each command. */ | |
11317 | ||
11318 | static void | |
11319 | remote_download_command_source (int num, ULONGEST addr, | |
11320 | struct command_line *cmds) | |
11321 | { | |
11322 | struct remote_state *rs = get_remote_state (); | |
11323 | struct command_line *cmd; | |
11324 | ||
11325 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11326 | { | |
0df8b418 | 11327 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11328 | strcpy (rs->buf, "QTDPsrc:"); |
11329 | encode_source_string (num, addr, "cmd", cmd->line, | |
11330 | rs->buf + strlen (rs->buf), | |
11331 | rs->buf_size - strlen (rs->buf)); | |
11332 | putpkt (rs->buf); | |
11333 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11334 | if (strcmp (target_buf, "OK")) | |
11335 | warning (_("Target does not support source download.")); | |
11336 | ||
11337 | if (cmd->control_type == while_control | |
11338 | || cmd->control_type == while_stepping_control) | |
11339 | { | |
11340 | remote_download_command_source (num, addr, *cmd->body_list); | |
11341 | ||
0df8b418 | 11342 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11343 | strcpy (rs->buf, "QTDPsrc:"); |
11344 | encode_source_string (num, addr, "cmd", "end", | |
11345 | rs->buf + strlen (rs->buf), | |
11346 | rs->buf_size - strlen (rs->buf)); | |
11347 | putpkt (rs->buf); | |
11348 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11349 | if (strcmp (target_buf, "OK")) | |
11350 | warning (_("Target does not support source download.")); | |
11351 | } | |
11352 | } | |
11353 | } | |
11354 | ||
35b1e5cc | 11355 | static void |
548f7808 | 11356 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11357 | { |
bba74b36 | 11358 | #define BUF_SIZE 2048 |
e8ba3115 | 11359 | |
35b1e5cc | 11360 | CORE_ADDR tpaddr; |
409873ef | 11361 | char addrbuf[40]; |
bba74b36 | 11362 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11363 | char **tdp_actions; |
11364 | char **stepping_actions; | |
11365 | int ndx; | |
11366 | struct cleanup *old_chain = NULL; | |
11367 | struct agent_expr *aexpr; | |
11368 | struct cleanup *aexpr_chain = NULL; | |
11369 | char *pkt; | |
e8ba3115 | 11370 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11371 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11372 | |
dc673c81 | 11373 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11374 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11375 | tdp_actions); | |
11376 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11377 | stepping_actions); | |
11378 | ||
11379 | tpaddr = loc->address; | |
11380 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11381 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11382 | addrbuf, /* address */ | |
11383 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11384 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11385 | /* Fast tracepoints are mostly handled by the target, but we can |
11386 | tell the target how big of an instruction block should be moved | |
11387 | around. */ | |
11388 | if (b->type == bp_fast_tracepoint) | |
11389 | { | |
11390 | /* Only test for support at download time; we may not know | |
11391 | target capabilities at definition time. */ | |
11392 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11393 | { |
6b940e6a PL |
11394 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11395 | NULL)) | |
bba74b36 | 11396 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11397 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11398 | else |
e8ba3115 YQ |
11399 | /* If it passed validation at definition but fails now, |
11400 | something is very wrong. */ | |
11401 | internal_error (__FILE__, __LINE__, | |
11402 | _("Fast tracepoint not " | |
11403 | "valid during download")); | |
35b1e5cc | 11404 | } |
e8ba3115 YQ |
11405 | else |
11406 | /* Fast tracepoints are functionally identical to regular | |
11407 | tracepoints, so don't take lack of support as a reason to | |
11408 | give up on the trace run. */ | |
11409 | warning (_("Target does not support fast tracepoints, " | |
11410 | "downloading %d as regular tracepoint"), b->number); | |
11411 | } | |
11412 | else if (b->type == bp_static_tracepoint) | |
11413 | { | |
11414 | /* Only test for support at download time; we may not know | |
11415 | target capabilities at definition time. */ | |
11416 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11417 | { |
e8ba3115 | 11418 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11419 | |
e8ba3115 YQ |
11420 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11421 | strcat (buf, ":S"); | |
0fb4aa4b | 11422 | else |
e8ba3115 | 11423 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11424 | } |
e8ba3115 YQ |
11425 | else |
11426 | /* Fast tracepoints are functionally identical to regular | |
11427 | tracepoints, so don't take lack of support as a reason | |
11428 | to give up on the trace run. */ | |
11429 | error (_("Target does not support static tracepoints")); | |
11430 | } | |
11431 | /* If the tracepoint has a conditional, make it into an agent | |
11432 | expression and append to the definition. */ | |
11433 | if (loc->cond) | |
11434 | { | |
11435 | /* Only test support at download time, we may not know target | |
11436 | capabilities at definition time. */ | |
11437 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11438 | { |
e8ba3115 YQ |
11439 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11440 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11441 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11442 | aexpr->len); | |
e8ba3115 YQ |
11443 | pkt = buf + strlen (buf); |
11444 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11445 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11446 | *pkt = '\0'; | |
11447 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11448 | } |
e8ba3115 YQ |
11449 | else |
11450 | warning (_("Target does not support conditional tracepoints, " | |
11451 | "ignoring tp %d cond"), b->number); | |
11452 | } | |
35b1e5cc | 11453 | |
d9b3f62e | 11454 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11455 | strcat (buf, "-"); |
11456 | putpkt (buf); | |
11457 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11458 | if (strcmp (target_buf, "OK")) | |
11459 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11460 | |
e8ba3115 YQ |
11461 | /* do_single_steps (t); */ |
11462 | if (tdp_actions) | |
11463 | { | |
11464 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11465 | { |
e8ba3115 | 11466 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11467 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11468 | b->number, addrbuf, /* address */ | |
11469 | tdp_actions[ndx], | |
11470 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11471 | ? '-' : 0)); | |
e8ba3115 YQ |
11472 | putpkt (buf); |
11473 | remote_get_noisy_reply (&target_buf, | |
11474 | &target_buf_size); | |
11475 | if (strcmp (target_buf, "OK")) | |
11476 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11477 | } |
e8ba3115 YQ |
11478 | } |
11479 | if (stepping_actions) | |
11480 | { | |
11481 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11482 | { |
e8ba3115 | 11483 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11484 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11485 | b->number, addrbuf, /* address */ | |
11486 | ((ndx == 0) ? "S" : ""), | |
11487 | stepping_actions[ndx], | |
11488 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11489 | putpkt (buf); |
11490 | remote_get_noisy_reply (&target_buf, | |
11491 | &target_buf_size); | |
11492 | if (strcmp (target_buf, "OK")) | |
11493 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11494 | } |
e8ba3115 | 11495 | } |
409873ef | 11496 | |
4082afcc | 11497 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11498 | { |
f00aae0f | 11499 | if (b->location != NULL) |
409873ef | 11500 | { |
e8ba3115 | 11501 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11502 | encode_source_string (b->number, loc->address, "at", |
11503 | event_location_to_string (b->location), | |
11504 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11505 | putpkt (buf); |
11506 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11507 | if (strcmp (target_buf, "OK")) | |
11508 | warning (_("Target does not support source download.")); | |
409873ef | 11509 | } |
e8ba3115 YQ |
11510 | if (b->cond_string) |
11511 | { | |
11512 | strcpy (buf, "QTDPsrc:"); | |
11513 | encode_source_string (b->number, loc->address, | |
11514 | "cond", b->cond_string, buf + strlen (buf), | |
11515 | 2048 - strlen (buf)); | |
11516 | putpkt (buf); | |
11517 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11518 | if (strcmp (target_buf, "OK")) | |
11519 | warning (_("Target does not support source download.")); | |
11520 | } | |
11521 | remote_download_command_source (b->number, loc->address, | |
11522 | breakpoint_commands (b)); | |
35b1e5cc | 11523 | } |
e8ba3115 YQ |
11524 | |
11525 | do_cleanups (old_chain); | |
35b1e5cc SS |
11526 | } |
11527 | ||
1e4d1764 | 11528 | static int |
a52a8357 | 11529 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11530 | { |
1e51243a PA |
11531 | struct remote_state *rs = get_remote_state (); |
11532 | struct trace_status *ts; | |
11533 | int status; | |
11534 | ||
11535 | /* Don't try to install tracepoints until we've relocated our | |
11536 | symbols, and fetched and merged the target's tracepoint list with | |
11537 | ours. */ | |
11538 | if (rs->starting_up) | |
11539 | return 0; | |
11540 | ||
11541 | ts = current_trace_status (); | |
8bd200f1 | 11542 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11543 | |
11544 | if (status == -1 || !ts->running_known || !ts->running) | |
11545 | return 0; | |
11546 | ||
11547 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11548 | installing tracepoint in trace, we have to return. */ | |
11549 | if (!remote_supports_install_in_trace ()) | |
11550 | return 0; | |
11551 | ||
11552 | return 1; | |
11553 | } | |
11554 | ||
11555 | ||
35b1e5cc | 11556 | static void |
559d2b81 TT |
11557 | remote_download_trace_state_variable (struct target_ops *self, |
11558 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11559 | { |
11560 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11561 | char *p; |
35b1e5cc | 11562 | |
bba74b36 YQ |
11563 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11564 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11565 | tsv->builtin); | |
00bf0b85 SS |
11566 | p = rs->buf + strlen (rs->buf); |
11567 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11568 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11569 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11570 | *p++ = '\0'; |
35b1e5cc SS |
11571 | putpkt (rs->buf); |
11572 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11573 | if (*target_buf == '\0') |
11574 | error (_("Target does not support this command.")); | |
11575 | if (strcmp (target_buf, "OK") != 0) | |
11576 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11577 | } |
11578 | ||
d248b706 | 11579 | static void |
46670d57 TT |
11580 | remote_enable_tracepoint (struct target_ops *self, |
11581 | struct bp_location *location) | |
d248b706 KY |
11582 | { |
11583 | struct remote_state *rs = get_remote_state (); | |
11584 | char addr_buf[40]; | |
11585 | ||
11586 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11587 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11588 | location->owner->number, addr_buf); | |
d248b706 KY |
11589 | putpkt (rs->buf); |
11590 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11591 | if (*rs->buf == '\0') | |
11592 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11593 | if (strcmp (rs->buf, "OK") != 0) | |
11594 | error (_("Error on target while enabling tracepoint.")); | |
11595 | } | |
11596 | ||
11597 | static void | |
780b049c TT |
11598 | remote_disable_tracepoint (struct target_ops *self, |
11599 | struct bp_location *location) | |
d248b706 KY |
11600 | { |
11601 | struct remote_state *rs = get_remote_state (); | |
11602 | char addr_buf[40]; | |
11603 | ||
11604 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11605 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11606 | location->owner->number, addr_buf); | |
d248b706 KY |
11607 | putpkt (rs->buf); |
11608 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11609 | if (*rs->buf == '\0') | |
11610 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11611 | if (strcmp (rs->buf, "OK") != 0) | |
11612 | error (_("Error on target while disabling tracepoint.")); | |
11613 | } | |
11614 | ||
35b1e5cc | 11615 | static void |
583f9a86 | 11616 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
11617 | { |
11618 | asection *s; | |
81b9b86e | 11619 | bfd *abfd = NULL; |
35b1e5cc | 11620 | bfd_size_type size; |
608bcef2 | 11621 | bfd_vma vma; |
35b1e5cc | 11622 | int anysecs = 0; |
c2fa21f1 | 11623 | int offset = 0; |
35b1e5cc SS |
11624 | |
11625 | if (!exec_bfd) | |
11626 | return; /* No information to give. */ | |
11627 | ||
11628 | strcpy (target_buf, "QTro"); | |
9779ab84 | 11629 | offset = strlen (target_buf); |
35b1e5cc SS |
11630 | for (s = exec_bfd->sections; s; s = s->next) |
11631 | { | |
11632 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 11633 | int sec_length; |
35b1e5cc SS |
11634 | |
11635 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 11636 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
11637 | (s->flags & SEC_READONLY) == 0) |
11638 | continue; | |
11639 | ||
11640 | anysecs = 1; | |
81b9b86e | 11641 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 11642 | size = bfd_get_section_size (s); |
608bcef2 HZ |
11643 | sprintf_vma (tmp1, vma); |
11644 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
11645 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
11646 | if (offset + sec_length + 1 > target_buf_size) | |
11647 | { | |
4082afcc | 11648 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 11649 | warning (_("\ |
c2fa21f1 HZ |
11650 | Too many sections for read-only sections definition packet.")); |
11651 | break; | |
11652 | } | |
bba74b36 YQ |
11653 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11654 | tmp1, tmp2); | |
c2fa21f1 | 11655 | offset += sec_length; |
35b1e5cc SS |
11656 | } |
11657 | if (anysecs) | |
11658 | { | |
11659 | putpkt (target_buf); | |
11660 | getpkt (&target_buf, &target_buf_size, 0); | |
11661 | } | |
11662 | } | |
11663 | ||
11664 | static void | |
e2d1aae3 | 11665 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11666 | { |
11667 | putpkt ("QTStart"); | |
11668 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11669 | if (*target_buf == '\0') |
11670 | error (_("Target does not support this command.")); | |
11671 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11672 | error (_("Bogus reply from target: %s"), target_buf); |
11673 | } | |
11674 | ||
11675 | static int | |
8bd200f1 | 11676 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11677 | { |
953b98d1 | 11678 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11679 | char *p = NULL; |
0df8b418 | 11680 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11681 | extern int trace_regblock_size; |
bd3eecc3 PA |
11682 | enum packet_result result; |
11683 | ||
4082afcc | 11684 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11685 | return -1; |
a744cf53 | 11686 | |
00bf0b85 SS |
11687 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11688 | ||
049dc89b JK |
11689 | putpkt ("qTStatus"); |
11690 | ||
492d29ea | 11691 | TRY |
67f41397 JK |
11692 | { |
11693 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11694 | } | |
492d29ea | 11695 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11696 | { |
598d3636 JK |
11697 | if (ex.error != TARGET_CLOSE_ERROR) |
11698 | { | |
11699 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11700 | return -1; | |
11701 | } | |
11702 | throw_exception (ex); | |
67f41397 | 11703 | } |
492d29ea | 11704 | END_CATCH |
00bf0b85 | 11705 | |
bd3eecc3 PA |
11706 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11707 | ||
00bf0b85 | 11708 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11709 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11710 | return -1; |
35b1e5cc | 11711 | |
00bf0b85 | 11712 | /* We're working with a live target. */ |
f5911ea1 | 11713 | ts->filename = NULL; |
00bf0b85 | 11714 | |
00bf0b85 | 11715 | if (*p++ != 'T') |
35b1e5cc SS |
11716 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11717 | ||
84cebc4a YQ |
11718 | /* Function 'parse_trace_status' sets default value of each field of |
11719 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11720 | parse_trace_status (p, ts); |
11721 | ||
11722 | return ts->running; | |
35b1e5cc SS |
11723 | } |
11724 | ||
70221824 | 11725 | static void |
db90e85c | 11726 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11727 | struct uploaded_tp *utp) |
11728 | { | |
11729 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11730 | char *reply; |
11731 | struct bp_location *loc; | |
11732 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11733 | size_t size = get_remote_packet_size (); |
f196051f SS |
11734 | |
11735 | if (tp) | |
11736 | { | |
11737 | tp->base.hit_count = 0; | |
11738 | tp->traceframe_usage = 0; | |
11739 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11740 | { | |
11741 | /* If the tracepoint was never downloaded, don't go asking for | |
11742 | any status. */ | |
11743 | if (tp->number_on_target == 0) | |
11744 | continue; | |
bba74b36 YQ |
11745 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11746 | phex_nz (loc->address, 0)); | |
f196051f SS |
11747 | putpkt (rs->buf); |
11748 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11749 | if (reply && *reply) | |
11750 | { | |
11751 | if (*reply == 'V') | |
11752 | parse_tracepoint_status (reply + 1, bp, utp); | |
11753 | } | |
11754 | } | |
11755 | } | |
11756 | else if (utp) | |
11757 | { | |
11758 | utp->hit_count = 0; | |
11759 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11760 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11761 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11762 | putpkt (rs->buf); |
11763 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11764 | if (reply && *reply) | |
11765 | { | |
11766 | if (*reply == 'V') | |
11767 | parse_tracepoint_status (reply + 1, bp, utp); | |
11768 | } | |
11769 | } | |
11770 | } | |
11771 | ||
35b1e5cc | 11772 | static void |
74499f1b | 11773 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11774 | { |
11775 | putpkt ("QTStop"); | |
11776 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11777 | if (*target_buf == '\0') |
11778 | error (_("Target does not support this command.")); | |
11779 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11780 | error (_("Bogus reply from target: %s"), target_buf); |
11781 | } | |
11782 | ||
11783 | static int | |
bd4c6793 TT |
11784 | remote_trace_find (struct target_ops *self, |
11785 | enum trace_find_type type, int num, | |
cc5925ad | 11786 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11787 | int *tpp) |
11788 | { | |
11789 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11790 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11791 | char *p, *reply; |
11792 | int target_frameno = -1, target_tracept = -1; | |
11793 | ||
e6e4e701 PA |
11794 | /* Lookups other than by absolute frame number depend on the current |
11795 | trace selected, so make sure it is correct on the remote end | |
11796 | first. */ | |
11797 | if (type != tfind_number) | |
11798 | set_remote_traceframe (); | |
11799 | ||
35b1e5cc SS |
11800 | p = rs->buf; |
11801 | strcpy (p, "QTFrame:"); | |
11802 | p = strchr (p, '\0'); | |
11803 | switch (type) | |
11804 | { | |
11805 | case tfind_number: | |
bba74b36 | 11806 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11807 | break; |
11808 | case tfind_pc: | |
bba74b36 | 11809 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11810 | break; |
11811 | case tfind_tp: | |
bba74b36 | 11812 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11813 | break; |
11814 | case tfind_range: | |
bba74b36 YQ |
11815 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11816 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11817 | break; |
11818 | case tfind_outside: | |
bba74b36 YQ |
11819 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11820 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11821 | break; |
11822 | default: | |
9b20d036 | 11823 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11824 | } |
11825 | ||
11826 | putpkt (rs->buf); | |
2f65bcb7 | 11827 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11828 | if (*reply == '\0') |
11829 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11830 | |
11831 | while (reply && *reply) | |
11832 | switch (*reply) | |
11833 | { | |
11834 | case 'F': | |
f197e0f1 VP |
11835 | p = ++reply; |
11836 | target_frameno = (int) strtol (p, &reply, 16); | |
11837 | if (reply == p) | |
11838 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11839 | /* Don't update our remote traceframe number cache on failure |
11840 | to select a remote traceframe. */ | |
f197e0f1 VP |
11841 | if (target_frameno == -1) |
11842 | return -1; | |
35b1e5cc SS |
11843 | break; |
11844 | case 'T': | |
f197e0f1 VP |
11845 | p = ++reply; |
11846 | target_tracept = (int) strtol (p, &reply, 16); | |
11847 | if (reply == p) | |
11848 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11849 | break; |
11850 | case 'O': /* "OK"? */ | |
11851 | if (reply[1] == 'K' && reply[2] == '\0') | |
11852 | reply += 2; | |
11853 | else | |
11854 | error (_("Bogus reply from target: %s"), reply); | |
11855 | break; | |
11856 | default: | |
11857 | error (_("Bogus reply from target: %s"), reply); | |
11858 | } | |
11859 | if (tpp) | |
11860 | *tpp = target_tracept; | |
e6e4e701 | 11861 | |
262e1174 | 11862 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11863 | return target_frameno; |
11864 | } | |
11865 | ||
11866 | static int | |
4011015b TT |
11867 | remote_get_trace_state_variable_value (struct target_ops *self, |
11868 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11869 | { |
11870 | struct remote_state *rs = get_remote_state (); | |
11871 | char *reply; | |
11872 | ULONGEST uval; | |
11873 | ||
e6e4e701 PA |
11874 | set_remote_traceframe (); |
11875 | ||
bba74b36 | 11876 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11877 | putpkt (rs->buf); |
11878 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11879 | if (reply && *reply) | |
11880 | { | |
11881 | if (*reply == 'V') | |
11882 | { | |
11883 | unpack_varlen_hex (reply + 1, &uval); | |
11884 | *val = (LONGEST) uval; | |
11885 | return 1; | |
11886 | } | |
11887 | } | |
11888 | return 0; | |
11889 | } | |
11890 | ||
00bf0b85 | 11891 | static int |
dc3decaf | 11892 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
11893 | { |
11894 | struct remote_state *rs = get_remote_state (); | |
11895 | char *p, *reply; | |
11896 | ||
11897 | p = rs->buf; | |
11898 | strcpy (p, "QTSave:"); | |
11899 | p += strlen (p); | |
11900 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11901 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 11902 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
11903 | *p++ = '\0'; |
11904 | putpkt (rs->buf); | |
ad91cd99 | 11905 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11906 | if (*reply == '\0') |
ad91cd99 PA |
11907 | error (_("Target does not support this command.")); |
11908 | if (strcmp (reply, "OK") != 0) | |
11909 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11910 | return 0; |
11911 | } | |
11912 | ||
11913 | /* This is basically a memory transfer, but needs to be its own packet | |
11914 | because we don't know how the target actually organizes its trace | |
11915 | memory, plus we want to be able to ask for as much as possible, but | |
11916 | not be unhappy if we don't get as much as we ask for. */ | |
11917 | ||
11918 | static LONGEST | |
88ee6f45 TT |
11919 | remote_get_raw_trace_data (struct target_ops *self, |
11920 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
11921 | { |
11922 | struct remote_state *rs = get_remote_state (); | |
11923 | char *reply; | |
11924 | char *p; | |
11925 | int rslt; | |
11926 | ||
11927 | p = rs->buf; | |
11928 | strcpy (p, "qTBuffer:"); | |
11929 | p += strlen (p); | |
11930 | p += hexnumstr (p, offset); | |
11931 | *p++ = ','; | |
11932 | p += hexnumstr (p, len); | |
11933 | *p++ = '\0'; | |
11934 | ||
11935 | putpkt (rs->buf); | |
11936 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11937 | if (reply && *reply) | |
11938 | { | |
11939 | /* 'l' by itself means we're at the end of the buffer and | |
11940 | there is nothing more to get. */ | |
11941 | if (*reply == 'l') | |
11942 | return 0; | |
11943 | ||
11944 | /* Convert the reply into binary. Limit the number of bytes to | |
11945 | convert according to our passed-in buffer size, rather than | |
11946 | what was returned in the packet; if the target is | |
11947 | unexpectedly generous and gives us a bigger reply than we | |
11948 | asked for, we don't want to crash. */ | |
11949 | rslt = hex2bin (target_buf, buf, len); | |
11950 | return rslt; | |
11951 | } | |
11952 | ||
11953 | /* Something went wrong, flag as an error. */ | |
11954 | return -1; | |
11955 | } | |
11956 | ||
35b1e5cc | 11957 | static void |
37b25738 | 11958 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11959 | { |
11960 | struct remote_state *rs = get_remote_state (); | |
11961 | ||
4082afcc | 11962 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11963 | { |
ad91cd99 PA |
11964 | char *reply; |
11965 | ||
bba74b36 | 11966 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11967 | putpkt (rs->buf); |
ad91cd99 PA |
11968 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11969 | if (*reply == '\0') | |
33da3f1c | 11970 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11971 | if (strcmp (reply, "OK") != 0) |
11972 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11973 | } |
11974 | else if (val) | |
11975 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11976 | } |
11977 | ||
dc146f7c VP |
11978 | static int |
11979 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11980 | { | |
11981 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11982 | |
fe978cb0 PA |
11983 | if (info && info->priv) |
11984 | return info->priv->core; | |
dc146f7c VP |
11985 | return -1; |
11986 | } | |
11987 | ||
4daf5ac0 | 11988 | static void |
736d5b1f | 11989 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11990 | { |
11991 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11992 | char *reply; |
4daf5ac0 | 11993 | |
bba74b36 | 11994 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11995 | putpkt (rs->buf); |
ad91cd99 PA |
11996 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11997 | if (*reply == '\0') | |
4daf5ac0 | 11998 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11999 | if (strcmp (reply, "OK") != 0) |
12000 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12001 | } |
12002 | ||
b3b9301e | 12003 | static struct traceframe_info * |
a893e81f | 12004 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12005 | { |
12006 | char *text; | |
12007 | ||
12008 | text = target_read_stralloc (¤t_target, | |
12009 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12010 | if (text != NULL) | |
12011 | { | |
12012 | struct traceframe_info *info; | |
12013 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12014 | ||
12015 | info = parse_traceframe_info (text); | |
12016 | do_cleanups (back_to); | |
12017 | return info; | |
12018 | } | |
12019 | ||
12020 | return NULL; | |
12021 | } | |
12022 | ||
405f8e94 SS |
12023 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12024 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12025 | if the packet is not supported, and 0 if the minimum instruction | |
12026 | length is unknown. */ | |
12027 | ||
12028 | static int | |
0e67620a | 12029 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12030 | { |
12031 | struct remote_state *rs = get_remote_state (); | |
12032 | char *reply; | |
12033 | ||
e886a173 PA |
12034 | /* If we're not debugging a process yet, the IPA can't be |
12035 | loaded. */ | |
12036 | if (!target_has_execution) | |
12037 | return 0; | |
12038 | ||
12039 | /* Make sure the remote is pointing at the right process. */ | |
12040 | set_general_process (); | |
12041 | ||
bba74b36 | 12042 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12043 | putpkt (rs->buf); |
12044 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12045 | if (*reply == '\0') | |
12046 | return -1; | |
12047 | else | |
12048 | { | |
12049 | ULONGEST min_insn_len; | |
12050 | ||
12051 | unpack_varlen_hex (reply, &min_insn_len); | |
12052 | ||
12053 | return (int) min_insn_len; | |
12054 | } | |
12055 | } | |
12056 | ||
f6f899bf | 12057 | static void |
4da384be | 12058 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12059 | { |
4082afcc | 12060 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12061 | { |
12062 | struct remote_state *rs = get_remote_state (); | |
12063 | char *buf = rs->buf; | |
12064 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12065 | enum packet_result result; | |
12066 | ||
12067 | gdb_assert (val >= 0 || val == -1); | |
12068 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12069 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12070 | if (val < 0) | |
12071 | { | |
12072 | *buf++ = '-'; | |
12073 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12074 | } | |
12075 | else | |
12076 | buf += hexnumstr (buf, (ULONGEST) val); | |
12077 | ||
12078 | putpkt (rs->buf); | |
12079 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12080 | result = packet_ok (rs->buf, | |
12081 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12082 | ||
12083 | if (result != PACKET_OK) | |
12084 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12085 | } | |
12086 | } | |
12087 | ||
f196051f | 12088 | static int |
d9e68a2c TT |
12089 | remote_set_trace_notes (struct target_ops *self, |
12090 | const char *user, const char *notes, | |
ca623f82 | 12091 | const char *stop_notes) |
f196051f SS |
12092 | { |
12093 | struct remote_state *rs = get_remote_state (); | |
12094 | char *reply; | |
12095 | char *buf = rs->buf; | |
12096 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12097 | int nbytes; | |
12098 | ||
12099 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12100 | if (user) | |
12101 | { | |
12102 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12103 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12104 | buf += 2 * nbytes; |
12105 | *buf++ = ';'; | |
12106 | } | |
12107 | if (notes) | |
12108 | { | |
12109 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12110 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12111 | buf += 2 * nbytes; |
12112 | *buf++ = ';'; | |
12113 | } | |
12114 | if (stop_notes) | |
12115 | { | |
12116 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12117 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12118 | buf += 2 * nbytes; |
12119 | *buf++ = ';'; | |
12120 | } | |
12121 | /* Ensure the buffer is terminated. */ | |
12122 | *buf = '\0'; | |
12123 | ||
12124 | putpkt (rs->buf); | |
12125 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12126 | if (*reply == '\0') | |
12127 | return 0; | |
12128 | ||
12129 | if (strcmp (reply, "OK") != 0) | |
12130 | error (_("Bogus reply from target: %s"), reply); | |
12131 | ||
12132 | return 1; | |
12133 | } | |
12134 | ||
d1feda86 | 12135 | static int |
2c152180 | 12136 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12137 | { |
4082afcc | 12138 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12139 | { |
12140 | struct remote_state *rs = get_remote_state (); | |
12141 | ||
12142 | /* If the stub supports QAgent. */ | |
bba74b36 | 12143 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12144 | putpkt (rs->buf); |
12145 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12146 | ||
12147 | if (strcmp (rs->buf, "OK") == 0) | |
12148 | { | |
12149 | use_agent = use; | |
12150 | return 1; | |
12151 | } | |
12152 | } | |
12153 | ||
12154 | return 0; | |
12155 | } | |
12156 | ||
12157 | static int | |
fe38f897 | 12158 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12159 | { |
4082afcc | 12160 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12161 | } |
12162 | ||
9accd112 MM |
12163 | struct btrace_target_info |
12164 | { | |
12165 | /* The ptid of the traced thread. */ | |
12166 | ptid_t ptid; | |
f4abbc16 MM |
12167 | |
12168 | /* The obtained branch trace configuration. */ | |
12169 | struct btrace_config conf; | |
9accd112 MM |
12170 | }; |
12171 | ||
f4abbc16 MM |
12172 | /* Reset our idea of our target's btrace configuration. */ |
12173 | ||
12174 | static void | |
12175 | remote_btrace_reset (void) | |
12176 | { | |
12177 | struct remote_state *rs = get_remote_state (); | |
12178 | ||
12179 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12180 | } | |
12181 | ||
9accd112 MM |
12182 | /* Check whether the target supports branch tracing. */ |
12183 | ||
12184 | static int | |
043c3577 | 12185 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12186 | { |
4082afcc | 12187 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12188 | return 0; |
4082afcc | 12189 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12190 | return 0; |
12191 | ||
043c3577 MM |
12192 | switch (format) |
12193 | { | |
12194 | case BTRACE_FORMAT_NONE: | |
12195 | return 0; | |
12196 | ||
12197 | case BTRACE_FORMAT_BTS: | |
12198 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12199 | |
12200 | case BTRACE_FORMAT_PT: | |
12201 | /* The trace is decoded on the host. Even if our target supports it, | |
12202 | we still need to have libipt to decode the trace. */ | |
12203 | #if defined (HAVE_LIBIPT) | |
12204 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12205 | #else /* !defined (HAVE_LIBIPT) */ | |
12206 | return 0; | |
12207 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12208 | } |
12209 | ||
12210 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12211 | } |
12212 | ||
f4abbc16 MM |
12213 | /* Synchronize the configuration with the target. */ |
12214 | ||
12215 | static void | |
12216 | btrace_sync_conf (const struct btrace_config *conf) | |
12217 | { | |
d33501a5 MM |
12218 | struct packet_config *packet; |
12219 | struct remote_state *rs; | |
12220 | char *buf, *pos, *endbuf; | |
12221 | ||
12222 | rs = get_remote_state (); | |
12223 | buf = rs->buf; | |
12224 | endbuf = buf + get_remote_packet_size (); | |
12225 | ||
12226 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12227 | if (packet_config_support (packet) == PACKET_ENABLE | |
12228 | && conf->bts.size != rs->btrace_config.bts.size) | |
12229 | { | |
12230 | pos = buf; | |
12231 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12232 | conf->bts.size); | |
12233 | ||
12234 | putpkt (buf); | |
12235 | getpkt (&buf, &rs->buf_size, 0); | |
12236 | ||
12237 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12238 | { | |
12239 | if (buf[0] == 'E' && buf[1] == '.') | |
12240 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12241 | else | |
12242 | error (_("Failed to configure the BTS buffer size.")); | |
12243 | } | |
12244 | ||
12245 | rs->btrace_config.bts.size = conf->bts.size; | |
12246 | } | |
b20a6524 MM |
12247 | |
12248 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12249 | if (packet_config_support (packet) == PACKET_ENABLE | |
12250 | && conf->pt.size != rs->btrace_config.pt.size) | |
12251 | { | |
12252 | pos = buf; | |
12253 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12254 | conf->pt.size); | |
12255 | ||
12256 | putpkt (buf); | |
12257 | getpkt (&buf, &rs->buf_size, 0); | |
12258 | ||
12259 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12260 | { | |
12261 | if (buf[0] == 'E' && buf[1] == '.') | |
12262 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12263 | else | |
12264 | error (_("Failed to configure the trace buffer size.")); | |
12265 | } | |
12266 | ||
12267 | rs->btrace_config.pt.size = conf->pt.size; | |
12268 | } | |
f4abbc16 MM |
12269 | } |
12270 | ||
12271 | /* Read the current thread's btrace configuration from the target and | |
12272 | store it into CONF. */ | |
12273 | ||
12274 | static void | |
12275 | btrace_read_config (struct btrace_config *conf) | |
12276 | { | |
12277 | char *xml; | |
12278 | ||
12279 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12280 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12281 | if (xml != NULL) |
12282 | { | |
12283 | struct cleanup *cleanup; | |
12284 | ||
12285 | cleanup = make_cleanup (xfree, xml); | |
12286 | parse_xml_btrace_conf (conf, xml); | |
12287 | do_cleanups (cleanup); | |
12288 | } | |
12289 | } | |
12290 | ||
9accd112 MM |
12291 | /* Enable branch tracing. */ |
12292 | ||
12293 | static struct btrace_target_info * | |
f4abbc16 MM |
12294 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12295 | const struct btrace_config *conf) | |
9accd112 MM |
12296 | { |
12297 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12298 | struct packet_config *packet = NULL; |
9accd112 MM |
12299 | struct remote_state *rs = get_remote_state (); |
12300 | char *buf = rs->buf; | |
12301 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12302 | ||
b20a6524 MM |
12303 | switch (conf->format) |
12304 | { | |
12305 | case BTRACE_FORMAT_BTS: | |
12306 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12307 | break; | |
12308 | ||
12309 | case BTRACE_FORMAT_PT: | |
12310 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12311 | break; | |
12312 | } | |
12313 | ||
12314 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12315 | error (_("Target does not support branch tracing.")); |
12316 | ||
f4abbc16 MM |
12317 | btrace_sync_conf (conf); |
12318 | ||
9accd112 MM |
12319 | set_general_thread (ptid); |
12320 | ||
12321 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12322 | putpkt (rs->buf); | |
12323 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12324 | ||
12325 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12326 | { | |
12327 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12328 | error (_("Could not enable branch tracing for %s: %s"), | |
12329 | target_pid_to_str (ptid), rs->buf + 2); | |
12330 | else | |
12331 | error (_("Could not enable branch tracing for %s."), | |
12332 | target_pid_to_str (ptid)); | |
12333 | } | |
12334 | ||
8d749320 | 12335 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12336 | tinfo->ptid = ptid; |
12337 | ||
f4abbc16 MM |
12338 | /* If we fail to read the configuration, we lose some information, but the |
12339 | tracing itself is not impacted. */ | |
492d29ea PA |
12340 | TRY |
12341 | { | |
12342 | btrace_read_config (&tinfo->conf); | |
12343 | } | |
12344 | CATCH (err, RETURN_MASK_ERROR) | |
12345 | { | |
12346 | if (err.message != NULL) | |
12347 | warning ("%s", err.message); | |
12348 | } | |
12349 | END_CATCH | |
f4abbc16 | 12350 | |
9accd112 MM |
12351 | return tinfo; |
12352 | } | |
12353 | ||
12354 | /* Disable branch tracing. */ | |
12355 | ||
12356 | static void | |
25e95349 TT |
12357 | remote_disable_btrace (struct target_ops *self, |
12358 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12359 | { |
12360 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12361 | struct remote_state *rs = get_remote_state (); | |
12362 | char *buf = rs->buf; | |
12363 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12364 | ||
4082afcc | 12365 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12366 | error (_("Target does not support branch tracing.")); |
12367 | ||
12368 | set_general_thread (tinfo->ptid); | |
12369 | ||
12370 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12371 | putpkt (rs->buf); | |
12372 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12373 | ||
12374 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12375 | { | |
12376 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12377 | error (_("Could not disable branch tracing for %s: %s"), | |
12378 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12379 | else | |
12380 | error (_("Could not disable branch tracing for %s."), | |
12381 | target_pid_to_str (tinfo->ptid)); | |
12382 | } | |
12383 | ||
12384 | xfree (tinfo); | |
12385 | } | |
12386 | ||
12387 | /* Teardown branch tracing. */ | |
12388 | ||
12389 | static void | |
1777056d TT |
12390 | remote_teardown_btrace (struct target_ops *self, |
12391 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12392 | { |
12393 | /* We must not talk to the target during teardown. */ | |
12394 | xfree (tinfo); | |
12395 | } | |
12396 | ||
12397 | /* Read the branch trace. */ | |
12398 | ||
969c39fb | 12399 | static enum btrace_error |
39c49f83 | 12400 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12401 | struct btrace_data *btrace, |
969c39fb | 12402 | struct btrace_target_info *tinfo, |
9accd112 MM |
12403 | enum btrace_read_type type) |
12404 | { | |
12405 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12406 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12407 | struct cleanup *cleanup; |
9accd112 MM |
12408 | const char *annex; |
12409 | char *xml; | |
12410 | ||
4082afcc | 12411 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12412 | error (_("Target does not support branch tracing.")); |
12413 | ||
12414 | #if !defined(HAVE_LIBEXPAT) | |
12415 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12416 | #endif | |
12417 | ||
12418 | switch (type) | |
12419 | { | |
864089d2 | 12420 | case BTRACE_READ_ALL: |
9accd112 MM |
12421 | annex = "all"; |
12422 | break; | |
864089d2 | 12423 | case BTRACE_READ_NEW: |
9accd112 MM |
12424 | annex = "new"; |
12425 | break; | |
969c39fb MM |
12426 | case BTRACE_READ_DELTA: |
12427 | annex = "delta"; | |
12428 | break; | |
9accd112 MM |
12429 | default: |
12430 | internal_error (__FILE__, __LINE__, | |
12431 | _("Bad branch tracing read type: %u."), | |
12432 | (unsigned int) type); | |
12433 | } | |
12434 | ||
12435 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12436 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12437 | if (xml == NULL) |
12438 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12439 | |
969c39fb | 12440 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12441 | parse_xml_btrace (btrace, xml); |
969c39fb | 12442 | do_cleanups (cleanup); |
9accd112 | 12443 | |
969c39fb | 12444 | return BTRACE_ERR_NONE; |
9accd112 MM |
12445 | } |
12446 | ||
f4abbc16 MM |
12447 | static const struct btrace_config * |
12448 | remote_btrace_conf (struct target_ops *self, | |
12449 | const struct btrace_target_info *tinfo) | |
12450 | { | |
12451 | return &tinfo->conf; | |
12452 | } | |
12453 | ||
ced63ec0 | 12454 | static int |
5436ff03 | 12455 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12456 | { |
4082afcc PA |
12457 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12458 | == PACKET_ENABLE); | |
ced63ec0 GB |
12459 | } |
12460 | ||
9dd130a0 TT |
12461 | /* Implementation of to_load. */ |
12462 | ||
12463 | static void | |
9cbe5fff | 12464 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12465 | { |
12466 | generic_load (name, from_tty); | |
12467 | } | |
12468 | ||
c78fa86a GB |
12469 | /* Accepts an integer PID; returns a string representing a file that |
12470 | can be opened on the remote side to get the symbols for the child | |
12471 | process. Returns NULL if the operation is not supported. */ | |
12472 | ||
12473 | static char * | |
12474 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12475 | { | |
12476 | static char *filename = NULL; | |
835205d0 GB |
12477 | struct inferior *inf; |
12478 | char *annex = NULL; | |
c78fa86a GB |
12479 | |
12480 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12481 | return NULL; | |
12482 | ||
12483 | if (filename != NULL) | |
12484 | xfree (filename); | |
12485 | ||
835205d0 GB |
12486 | inf = find_inferior_pid (pid); |
12487 | if (inf == NULL) | |
12488 | internal_error (__FILE__, __LINE__, | |
12489 | _("not currently attached to process %d"), pid); | |
12490 | ||
12491 | if (!inf->fake_pid_p) | |
12492 | { | |
12493 | const int annex_size = 9; | |
12494 | ||
12495 | annex = alloca (annex_size); | |
12496 | xsnprintf (annex, annex_size, "%x", pid); | |
12497 | } | |
12498 | ||
c78fa86a GB |
12499 | filename = target_read_stralloc (¤t_target, |
12500 | TARGET_OBJECT_EXEC_FILE, annex); | |
12501 | ||
12502 | return filename; | |
12503 | } | |
12504 | ||
c906108c | 12505 | static void |
fba45db2 | 12506 | init_remote_ops (void) |
c906108c | 12507 | { |
c5aa993b | 12508 | remote_ops.to_shortname = "remote"; |
c906108c | 12509 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12510 | remote_ops.to_doc = |
c906108c | 12511 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12512 | Specify the serial device it is connected to\n\ |
12513 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12514 | remote_ops.to_open = remote_open; |
12515 | remote_ops.to_close = remote_close; | |
c906108c | 12516 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12517 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12518 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12519 | remote_ops.to_wait = remote_wait; |
12520 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12521 | remote_ops.to_store_registers = remote_store_registers; | |
12522 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12523 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12524 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12525 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12526 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12527 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12528 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12529 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12530 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12531 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12532 | remote_ops.to_watchpoint_addr_within_range = |
12533 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12534 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12535 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12536 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12537 | remote_ops.to_region_ok_for_hw_watchpoint |
12538 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12539 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12540 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12541 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12542 | remote_ops.to_load = remote_load; |
c906108c | 12543 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12544 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12545 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12546 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 12547 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12548 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12549 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12550 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12551 | remote_ops.to_stop = remote_stop; |
bfedc46a | 12552 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 12553 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 12554 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12555 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12556 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12557 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12558 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12559 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12560 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12561 | remote_ops.to_has_memory = default_child_has_memory; | |
12562 | remote_ops.to_has_stack = default_child_has_stack; | |
12563 | remote_ops.to_has_registers = default_child_has_registers; | |
12564 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12565 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12566 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12567 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12568 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12569 | remote_ops.to_flash_erase = remote_flash_erase; |
12570 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12571 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12572 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12573 | remote_ops.to_can_async_p = remote_can_async_p; |
12574 | remote_ops.to_is_async_p = remote_is_async_p; | |
12575 | remote_ops.to_async = remote_async; | |
75c99385 PA |
12576 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12577 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12578 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12579 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
12580 | remote_ops.to_supports_disable_randomization |
12581 | = remote_supports_disable_randomization; | |
4bd7dc42 | 12582 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
12583 | remote_ops.to_fileio_open = remote_hostio_open; |
12584 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12585 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 12586 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
12587 | remote_ops.to_fileio_close = remote_hostio_close; |
12588 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 12589 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 12590 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 12591 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 12592 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 12593 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
12594 | remote_ops.to_trace_init = remote_trace_init; |
12595 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 12596 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
12597 | remote_ops.to_download_trace_state_variable |
12598 | = remote_download_trace_state_variable; | |
d248b706 KY |
12599 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12600 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
12601 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12602 | remote_ops.to_trace_start = remote_trace_start; | |
12603 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 12604 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
12605 | remote_ops.to_trace_stop = remote_trace_stop; |
12606 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
12607 | remote_ops.to_get_trace_state_variable_value |
12608 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
12609 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12610 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
12611 | remote_ops.to_upload_trace_state_variables |
12612 | = remote_upload_trace_state_variables; | |
00bf0b85 | 12613 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 12614 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 12615 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 12616 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 12617 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 12618 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 12619 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 12620 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 12621 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 12622 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
12623 | remote_ops.to_static_tracepoint_marker_at |
12624 | = remote_static_tracepoint_marker_at; | |
12625 | remote_ops.to_static_tracepoint_markers_by_strid | |
12626 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 12627 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
12628 | remote_ops.to_use_agent = remote_use_agent; |
12629 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
12630 | remote_ops.to_supports_btrace = remote_supports_btrace; |
12631 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12632 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12633 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12634 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 12635 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
12636 | remote_ops.to_augmented_libraries_svr4_read = |
12637 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
12638 | } |
12639 | ||
12640 | /* Set up the extended remote vector by making a copy of the standard | |
12641 | remote vector and adding to it. */ | |
12642 | ||
12643 | static void | |
fba45db2 | 12644 | init_extended_remote_ops (void) |
c906108c SS |
12645 | { |
12646 | extended_remote_ops = remote_ops; | |
12647 | ||
0f71a2f6 | 12648 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 12649 | extended_remote_ops.to_longname = |
c906108c | 12650 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 12651 | extended_remote_ops.to_doc = |
c906108c | 12652 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
12653 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
12654 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
12655 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
12656 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
12657 | extended_remote_ops.to_detach = extended_remote_detach; |
12658 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 12659 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 12660 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
12661 | extended_remote_ops.to_supports_disable_randomization |
12662 | = extended_remote_supports_disable_randomization; | |
de0d863e | 12663 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
cbb8991c DB |
12664 | extended_remote_ops.to_insert_fork_catchpoint |
12665 | = remote_insert_fork_catchpoint; | |
12666 | extended_remote_ops.to_remove_fork_catchpoint | |
12667 | = remote_remove_fork_catchpoint; | |
12668 | extended_remote_ops.to_insert_vfork_catchpoint | |
12669 | = remote_insert_vfork_catchpoint; | |
12670 | extended_remote_ops.to_remove_vfork_catchpoint | |
12671 | = remote_remove_vfork_catchpoint; | |
0f71a2f6 JM |
12672 | } |
12673 | ||
6426a772 | 12674 | static int |
6a109b6b | 12675 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 12676 | { |
5d93a237 TT |
12677 | struct remote_state *rs = get_remote_state (); |
12678 | ||
c6ebd6cf | 12679 | if (!target_async_permitted) |
75c99385 PA |
12680 | /* We only enable async when the user specifically asks for it. */ |
12681 | return 0; | |
12682 | ||
23860348 | 12683 | /* We're async whenever the serial device is. */ |
5d93a237 | 12684 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
12685 | } |
12686 | ||
12687 | static int | |
6a109b6b | 12688 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 12689 | { |
5d93a237 TT |
12690 | struct remote_state *rs = get_remote_state (); |
12691 | ||
c6ebd6cf | 12692 | if (!target_async_permitted) |
75c99385 PA |
12693 | /* We only enable async when the user specifically asks for it. */ |
12694 | return 0; | |
12695 | ||
23860348 | 12696 | /* We're async whenever the serial device is. */ |
5d93a237 | 12697 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
12698 | } |
12699 | ||
2acceee2 JM |
12700 | /* Pass the SERIAL event on and up to the client. One day this code |
12701 | will be able to delay notifying the client of an event until the | |
23860348 | 12702 | point where an entire packet has been received. */ |
2acceee2 | 12703 | |
2acceee2 JM |
12704 | static serial_event_ftype remote_async_serial_handler; |
12705 | ||
6426a772 | 12706 | static void |
819cc324 | 12707 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 12708 | { |
88b496c3 TT |
12709 | struct remote_state *rs = context; |
12710 | ||
2acceee2 JM |
12711 | /* Don't propogate error information up to the client. Instead let |
12712 | the client find out about the error by querying the target. */ | |
6a3753b3 | 12713 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
12714 | } |
12715 | ||
74531fed PA |
12716 | static void |
12717 | remote_async_inferior_event_handler (gdb_client_data data) | |
12718 | { | |
12719 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12720 | } | |
12721 | ||
2acceee2 | 12722 | static void |
6a3753b3 | 12723 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 12724 | { |
5d93a237 TT |
12725 | struct remote_state *rs = get_remote_state (); |
12726 | ||
6a3753b3 | 12727 | if (enable) |
2acceee2 | 12728 | { |
88b496c3 | 12729 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
12730 | |
12731 | /* If there are pending events in the stop reply queue tell the | |
12732 | event loop to process them. */ | |
12733 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12734 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
12735 | } |
12736 | else | |
b7d2e916 PA |
12737 | { |
12738 | serial_async (rs->remote_desc, NULL, NULL); | |
12739 | clear_async_event_handler (remote_async_inferior_event_token); | |
12740 | } | |
6426a772 JM |
12741 | } |
12742 | ||
5a2468f5 | 12743 | static void |
c2d11a7d | 12744 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 12745 | { |
635c7e8a | 12746 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
12747 | } |
12748 | ||
d471ea57 AC |
12749 | static void |
12750 | show_remote_cmd (char *args, int from_tty) | |
12751 | { | |
37a105a1 | 12752 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 12753 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
12754 | struct cleanup *showlist_chain; |
12755 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12756 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12757 | |
12758 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12759 | for (; list != NULL; list = list->next) | |
12760 | if (strcmp (list->name, "Z-packet") == 0) | |
12761 | continue; | |
427c3a89 DJ |
12762 | else if (list->type == not_set_cmd) |
12763 | /* Alias commands are exactly like the original, except they | |
12764 | don't have the normal type. */ | |
12765 | continue; | |
12766 | else | |
37a105a1 DJ |
12767 | { |
12768 | struct cleanup *option_chain | |
12769 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12770 | |
37a105a1 DJ |
12771 | ui_out_field_string (uiout, "name", list->name); |
12772 | ui_out_text (uiout, ": "); | |
427c3a89 | 12773 | if (list->type == show_cmd) |
5b9afe8a | 12774 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12775 | else |
12776 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12777 | /* Close the tuple. */ |
12778 | do_cleanups (option_chain); | |
12779 | } | |
427c3a89 DJ |
12780 | |
12781 | /* Close the tuple. */ | |
12782 | do_cleanups (showlist_chain); | |
d471ea57 | 12783 | } |
5a2468f5 | 12784 | |
0f71a2f6 | 12785 | |
23860348 | 12786 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12787 | static void |
12788 | remote_new_objfile (struct objfile *objfile) | |
12789 | { | |
5d93a237 TT |
12790 | struct remote_state *rs = get_remote_state (); |
12791 | ||
12792 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12793 | remote_check_symbols (); |
dc8acb97 MS |
12794 | } |
12795 | ||
00bf0b85 SS |
12796 | /* Pull all the tracepoints defined on the target and create local |
12797 | data structures representing them. We don't want to create real | |
12798 | tracepoints yet, we don't want to mess up the user's existing | |
12799 | collection. */ | |
12800 | ||
12801 | static int | |
ab6617cc | 12802 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12803 | { |
00bf0b85 SS |
12804 | struct remote_state *rs = get_remote_state (); |
12805 | char *p; | |
d5551862 | 12806 | |
00bf0b85 SS |
12807 | /* Ask for a first packet of tracepoint definition. */ |
12808 | putpkt ("qTfP"); | |
12809 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12810 | p = rs->buf; | |
12811 | while (*p && *p != 'l') | |
d5551862 | 12812 | { |
00bf0b85 SS |
12813 | parse_tracepoint_definition (p, utpp); |
12814 | /* Ask for another packet of tracepoint definition. */ | |
12815 | putpkt ("qTsP"); | |
12816 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12817 | p = rs->buf; | |
d5551862 | 12818 | } |
00bf0b85 | 12819 | return 0; |
d5551862 SS |
12820 | } |
12821 | ||
00bf0b85 | 12822 | static int |
181e3713 TT |
12823 | remote_upload_trace_state_variables (struct target_ops *self, |
12824 | struct uploaded_tsv **utsvp) | |
d5551862 | 12825 | { |
00bf0b85 | 12826 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12827 | char *p; |
d5551862 | 12828 | |
00bf0b85 SS |
12829 | /* Ask for a first packet of variable definition. */ |
12830 | putpkt ("qTfV"); | |
d5551862 SS |
12831 | getpkt (&rs->buf, &rs->buf_size, 0); |
12832 | p = rs->buf; | |
00bf0b85 | 12833 | while (*p && *p != 'l') |
d5551862 | 12834 | { |
00bf0b85 SS |
12835 | parse_tsv_definition (p, utsvp); |
12836 | /* Ask for another packet of variable definition. */ | |
12837 | putpkt ("qTsV"); | |
d5551862 SS |
12838 | getpkt (&rs->buf, &rs->buf_size, 0); |
12839 | p = rs->buf; | |
12840 | } | |
00bf0b85 | 12841 | return 0; |
d5551862 SS |
12842 | } |
12843 | ||
c1e36e3e PA |
12844 | /* The "set/show range-stepping" show hook. */ |
12845 | ||
12846 | static void | |
12847 | show_range_stepping (struct ui_file *file, int from_tty, | |
12848 | struct cmd_list_element *c, | |
12849 | const char *value) | |
12850 | { | |
12851 | fprintf_filtered (file, | |
12852 | _("Debugger's willingness to use range stepping " | |
12853 | "is %s.\n"), value); | |
12854 | } | |
12855 | ||
12856 | /* The "set/show range-stepping" set hook. */ | |
12857 | ||
12858 | static void | |
12859 | set_range_stepping (char *ignore_args, int from_tty, | |
12860 | struct cmd_list_element *c) | |
12861 | { | |
5d93a237 TT |
12862 | struct remote_state *rs = get_remote_state (); |
12863 | ||
c1e36e3e PA |
12864 | /* Whene enabling, check whether range stepping is actually |
12865 | supported by the target, and warn if not. */ | |
12866 | if (use_range_stepping) | |
12867 | { | |
5d93a237 | 12868 | if (rs->remote_desc != NULL) |
c1e36e3e | 12869 | { |
4082afcc | 12870 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12871 | remote_vcont_probe (rs); |
12872 | ||
4082afcc | 12873 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12874 | && rs->supports_vCont.r) |
12875 | return; | |
12876 | } | |
12877 | ||
12878 | warning (_("Range stepping is not supported by the current target")); | |
12879 | } | |
12880 | } | |
12881 | ||
c906108c | 12882 | void |
fba45db2 | 12883 | _initialize_remote (void) |
c906108c | 12884 | { |
ea9c271d | 12885 | struct remote_state *rs; |
9a7071a8 | 12886 | struct cmd_list_element *cmd; |
6f937416 | 12887 | const char *cmd_name; |
ea9c271d | 12888 | |
0f71a2f6 | 12889 | /* architecture specific data */ |
2bc416ba | 12890 | remote_gdbarch_data_handle = |
23860348 | 12891 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
12892 | remote_g_packet_data_handle = |
12893 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 12894 | |
ea9c271d DJ |
12895 | /* Initialize the per-target state. At the moment there is only one |
12896 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
12897 | time. */ |
12898 | remote_state = new_remote_state (); | |
ea9c271d | 12899 | |
c906108c SS |
12900 | init_remote_ops (); |
12901 | add_target (&remote_ops); | |
12902 | ||
12903 | init_extended_remote_ops (); | |
12904 | add_target (&extended_remote_ops); | |
cce74817 | 12905 | |
dc8acb97 | 12906 | /* Hook into new objfile notification. */ |
06d3b283 | 12907 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
12908 | /* We're no longer interested in notification events of an inferior |
12909 | when it exits. */ | |
12910 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 12911 | |
b803fb0f | 12912 | /* Set up signal handlers. */ |
934b9bac | 12913 | async_sigint_remote_token = |
b803fb0f | 12914 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 12915 | async_sigint_remote_twice_token = |
6d549500 | 12916 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 12917 | |
c906108c SS |
12918 | #if 0 |
12919 | init_remote_threadtests (); | |
12920 | #endif | |
12921 | ||
722247f1 | 12922 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 12923 | /* set/show remote ... */ |
d471ea57 | 12924 | |
1bedd215 | 12925 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
12926 | Remote protocol specific variables\n\ |
12927 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12928 | the packets being used"), |
cff3e48b | 12929 | &remote_set_cmdlist, "set remote ", |
23860348 | 12930 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 12931 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
12932 | Remote protocol specific variables\n\ |
12933 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12934 | the packets being used"), |
cff3e48b | 12935 | &remote_show_cmdlist, "show remote ", |
23860348 | 12936 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 12937 | |
1a966eab AC |
12938 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
12939 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
12940 | Argument is a single section name (default: all loaded sections).\n\ |
12941 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
12942 | &cmdlist); |
12943 | ||
1a966eab AC |
12944 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
12945 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
12946 | maintenance packet TEXT\n\ |
12947 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12948 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12949 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 12950 | terminating `#' character and checksum."), |
c906108c SS |
12951 | &maintenancelist); |
12952 | ||
7915a72c AC |
12953 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
12954 | Set whether to send break if interrupted."), _("\ | |
12955 | Show whether to send break if interrupted."), _("\ | |
12956 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 12957 | set_remotebreak, show_remotebreak, |
e707bbc2 | 12958 | &setlist, &showlist); |
9a7071a8 JB |
12959 | cmd_name = "remotebreak"; |
12960 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12961 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12962 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12963 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12964 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12965 | ||
12966 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
12967 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12968 | _("\ | |
9a7071a8 JB |
12969 | Set interrupt sequence to remote target."), _("\ |
12970 | Show interrupt sequence to remote target."), _("\ | |
12971 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12972 | NULL, show_interrupt_sequence, | |
12973 | &remote_set_cmdlist, | |
12974 | &remote_show_cmdlist); | |
12975 | ||
12976 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12977 | &interrupt_on_connect, _("\ | |
12978 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12979 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12980 | If set, interrupt sequence is sent to remote target."), | |
12981 | NULL, NULL, | |
12982 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 12983 | |
23860348 | 12984 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 12985 | |
1a966eab AC |
12986 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
12987 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 12988 | &setlist); |
1a966eab AC |
12989 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
12990 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
12991 | &showlist); |
12992 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
12993 | set_memory_write_packet_size, _("\ |
12994 | Set the maximum number of bytes per memory-write packet.\n\ | |
12995 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12996 | default packet size. The actual limit is further reduced\n\ | |
12997 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12998 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12999 | &remote_set_cmdlist); |
13000 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13001 | set_memory_read_packet_size, _("\ |
13002 | Set the maximum number of bytes per memory-read packet.\n\ | |
13003 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13004 | default packet size. The actual limit is further reduced\n\ | |
13005 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13006 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13007 | &remote_set_cmdlist); |
13008 | add_cmd ("memory-write-packet-size", no_class, | |
13009 | show_memory_write_packet_size, | |
1a966eab | 13010 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13011 | &remote_show_cmdlist); |
13012 | add_cmd ("memory-read-packet-size", no_class, | |
13013 | show_memory_read_packet_size, | |
1a966eab | 13014 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13015 | &remote_show_cmdlist); |
c906108c | 13016 | |
b3f42336 | 13017 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13018 | &remote_hw_watchpoint_limit, _("\ |
13019 | Set the maximum number of target hardware watchpoints."), _("\ | |
13020 | Show the maximum number of target hardware watchpoints."), _("\ | |
13021 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13022 | NULL, NULL, /* FIXME: i18n: The maximum |
13023 | number of target hardware | |
13024 | watchpoints is %s. */ | |
b3f42336 | 13025 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13026 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13027 | &remote_hw_watchpoint_length_limit, _("\ | |
13028 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13029 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13030 | Specify a negative limit for unlimited."), | |
13031 | NULL, NULL, /* FIXME: i18n: The maximum | |
13032 | length (in bytes) of a target | |
13033 | hardware watchpoint is %s. */ | |
13034 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13035 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13036 | &remote_hw_breakpoint_limit, _("\ |
13037 | Set the maximum number of target hardware breakpoints."), _("\ | |
13038 | Show the maximum number of target hardware breakpoints."), _("\ | |
13039 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13040 | NULL, NULL, /* FIXME: i18n: The maximum |
13041 | number of target hardware | |
13042 | breakpoints is %s. */ | |
b3f42336 | 13043 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13044 | |
1b493192 PA |
13045 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13046 | &remote_address_size, _("\ | |
4d28ad1e AC |
13047 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13048 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13049 | NULL, |
13050 | NULL, /* FIXME: i18n: */ | |
13051 | &setlist, &showlist); | |
c906108c | 13052 | |
ca4f7f8b PA |
13053 | init_all_packet_configs (); |
13054 | ||
444abaca | 13055 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13056 | "X", "binary-download", 1); |
0f71a2f6 | 13057 | |
444abaca | 13058 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13059 | "vCont", "verbose-resume", 0); |
506fb367 | 13060 | |
89be2091 DJ |
13061 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13062 | "QPassSignals", "pass-signals", 0); | |
13063 | ||
9b224c5e PA |
13064 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13065 | "QProgramSignals", "program-signals", 0); | |
13066 | ||
444abaca | 13067 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13068 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13069 | |
444abaca | 13070 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13071 | "P", "set-register", 1); |
d471ea57 | 13072 | |
444abaca | 13073 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13074 | "p", "fetch-register", 1); |
b96ec7ac | 13075 | |
444abaca | 13076 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13077 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13078 | |
444abaca | 13079 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13080 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13081 | |
444abaca | 13082 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13083 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13084 | |
444abaca | 13085 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13086 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13087 | |
444abaca | 13088 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13089 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13090 | |
0876f84a DJ |
13091 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13092 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13093 | |
c78fa86a GB |
13094 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13095 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13096 | ||
23181151 DJ |
13097 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13098 | "qXfer:features:read", "target-features", 0); | |
13099 | ||
cfa9d6d9 DJ |
13100 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13101 | "qXfer:libraries:read", "library-info", 0); | |
13102 | ||
2268b414 JK |
13103 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13104 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13105 | ||
fd79ecee DJ |
13106 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13107 | "qXfer:memory-map:read", "memory-map", 0); | |
13108 | ||
0e7f50da UW |
13109 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13110 | "qXfer:spu:read", "read-spu-object", 0); | |
13111 | ||
13112 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13113 | "qXfer:spu:write", "write-spu-object", 0); | |
13114 | ||
07e059b5 VP |
13115 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13116 | "qXfer:osdata:read", "osdata", 0); | |
13117 | ||
dc146f7c VP |
13118 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13119 | "qXfer:threads:read", "threads", 0); | |
13120 | ||
4aa995e1 PA |
13121 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13122 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13123 | ||
13124 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13125 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13126 | ||
b3b9301e PA |
13127 | add_packet_config_cmd |
13128 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13129 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13130 | |
169081d0 TG |
13131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13132 | "qXfer:uib:read", "unwind-info-block", 0); | |
13133 | ||
444abaca | 13134 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13135 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13136 | 0); |
13137 | ||
711e434b PM |
13138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13139 | "qGetTIBAddr", "get-thread-information-block-address", | |
13140 | 0); | |
13141 | ||
40ab02ce MS |
13142 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13143 | "bc", "reverse-continue", 0); | |
13144 | ||
13145 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13146 | "bs", "reverse-step", 0); | |
13147 | ||
be2a5f71 DJ |
13148 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13149 | "qSupported", "supported-packets", 0); | |
13150 | ||
08388c79 DE |
13151 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13152 | "qSearch:memory", "search-memory", 0); | |
13153 | ||
bd3eecc3 PA |
13154 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13155 | "qTStatus", "trace-status", 0); | |
13156 | ||
15a201c8 GB |
13157 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13158 | "vFile:setfs", "hostio-setfs", 0); | |
13159 | ||
a6b151f1 DJ |
13160 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13161 | "vFile:open", "hostio-open", 0); | |
13162 | ||
13163 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13164 | "vFile:pread", "hostio-pread", 0); | |
13165 | ||
13166 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13167 | "vFile:pwrite", "hostio-pwrite", 0); | |
13168 | ||
13169 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13170 | "vFile:close", "hostio-close", 0); | |
13171 | ||
13172 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13173 | "vFile:unlink", "hostio-unlink", 0); | |
13174 | ||
b9e7b9c3 UW |
13175 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13176 | "vFile:readlink", "hostio-readlink", 0); | |
13177 | ||
0a93529c GB |
13178 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13179 | "vFile:fstat", "hostio-fstat", 0); | |
13180 | ||
2d717e4f DJ |
13181 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13182 | "vAttach", "attach", 0); | |
13183 | ||
13184 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13185 | "vRun", "run", 0); | |
13186 | ||
a6f3e723 SL |
13187 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13188 | "QStartNoAckMode", "noack", 0); | |
13189 | ||
82f73884 PA |
13190 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13191 | "vKill", "kill", 0); | |
13192 | ||
0b16c5cf PA |
13193 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13194 | "qAttached", "query-attached", 0); | |
13195 | ||
782b2b07 | 13196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13197 | "ConditionalTracepoints", |
13198 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13199 | |
13200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13201 | "ConditionalBreakpoints", | |
13202 | "conditional-breakpoints", 0); | |
13203 | ||
d3ce09f5 SS |
13204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13205 | "BreakpointCommands", | |
13206 | "breakpoint-commands", 0); | |
13207 | ||
7a697b8d SS |
13208 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13209 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13210 | |
409873ef SS |
13211 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13212 | "TracepointSource", "TracepointSource", 0); | |
13213 | ||
d914c394 SS |
13214 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13215 | "QAllow", "allow", 0); | |
13216 | ||
0fb4aa4b PA |
13217 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13218 | "StaticTracepoints", "static-tracepoints", 0); | |
13219 | ||
1e4d1764 YQ |
13220 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13221 | "InstallInTrace", "install-in-trace", 0); | |
13222 | ||
0fb4aa4b PA |
13223 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13224 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13225 | ||
78d85199 YQ |
13226 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13227 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13228 | ||
03583c20 UW |
13229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13230 | "QDisableRandomization", "disable-randomization", 0); | |
13231 | ||
d1feda86 YQ |
13232 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13233 | "QAgent", "agent", 0); | |
13234 | ||
f6f899bf HAQ |
13235 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13236 | "QTBuffer:size", "trace-buffer-size", 0); | |
13237 | ||
9accd112 MM |
13238 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13239 | "Qbtrace:off", "disable-btrace", 0); | |
13240 | ||
13241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13242 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13243 | ||
13244 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13245 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13246 | |
13247 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13248 | "qXfer:btrace", "read-btrace", 0); | |
13249 | ||
f4abbc16 MM |
13250 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13251 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13252 | ||
d33501a5 MM |
13253 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13254 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13255 | ||
73b8c1fd PA |
13256 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13257 | "multiprocess-feature", "multiprocess-feature", 0); | |
13258 | ||
f7e6eed5 PA |
13259 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13260 | "swbreak-feature", "swbreak-feature", 0); | |
13261 | ||
13262 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13263 | "hwbreak-feature", "hwbreak-feature", 0); | |
13264 | ||
89245bc0 DB |
13265 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13266 | "fork-event-feature", "fork-event-feature", 0); | |
13267 | ||
13268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13269 | "vfork-event-feature", "vfork-event-feature", 0); | |
13270 | ||
b20a6524 MM |
13271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13272 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13273 | ||
0b736949 DB |
13274 | /* Assert that we've registered "set remote foo-packet" commands |
13275 | for all packet configs. */ | |
ca4f7f8b PA |
13276 | { |
13277 | int i; | |
13278 | ||
13279 | for (i = 0; i < PACKET_MAX; i++) | |
13280 | { | |
13281 | /* Ideally all configs would have a command associated. Some | |
13282 | still don't though. */ | |
13283 | int excepted; | |
13284 | ||
13285 | switch (i) | |
13286 | { | |
13287 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13288 | case PACKET_EnableDisableTracepoints_feature: |
13289 | case PACKET_tracenz_feature: | |
13290 | case PACKET_DisconnectedTracing_feature: | |
13291 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13292 | case PACKET_qCRC: |
13293 | /* Additions to this list need to be well justified: | |
13294 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13295 | excepted = 1; |
13296 | break; | |
13297 | default: | |
13298 | excepted = 0; | |
13299 | break; | |
13300 | } | |
13301 | ||
13302 | /* This catches both forgetting to add a config command, and | |
13303 | forgetting to remove a packet from the exception list. */ | |
13304 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13305 | } | |
13306 | } | |
13307 | ||
37a105a1 DJ |
13308 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13309 | Z sub-packet has its own set and show commands, but users may | |
13310 | have sets to this variable in their .gdbinit files (or in their | |
13311 | documentation). */ | |
e9e68a56 | 13312 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13313 | &remote_Z_packet_detect, _("\ |
13314 | Set use of remote protocol `Z' packets"), _("\ | |
13315 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13316 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13317 | packets."), |
e9e68a56 | 13318 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13319 | show_remote_protocol_Z_packet_cmd, |
13320 | /* FIXME: i18n: Use of remote protocol | |
13321 | `Z' packets is %s. */ | |
e9e68a56 | 13322 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13323 | |
a6b151f1 DJ |
13324 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13325 | Manipulate files on the remote system\n\ | |
13326 | Transfer files to and from the remote target system."), | |
13327 | &remote_cmdlist, "remote ", | |
13328 | 0 /* allow-unknown */, &cmdlist); | |
13329 | ||
13330 | add_cmd ("put", class_files, remote_put_command, | |
13331 | _("Copy a local file to the remote system."), | |
13332 | &remote_cmdlist); | |
13333 | ||
13334 | add_cmd ("get", class_files, remote_get_command, | |
13335 | _("Copy a remote file to the local system."), | |
13336 | &remote_cmdlist); | |
13337 | ||
13338 | add_cmd ("delete", class_files, remote_delete_command, | |
13339 | _("Delete a remote file."), | |
13340 | &remote_cmdlist); | |
13341 | ||
2d717e4f DJ |
13342 | remote_exec_file = xstrdup (""); |
13343 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
13344 | &remote_exec_file, _("\ | |
13345 | Set the remote pathname for \"run\""), _("\ | |
13346 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
13347 | &remote_set_cmdlist, &remote_show_cmdlist); | |
13348 | ||
c1e36e3e PA |
13349 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13350 | &use_range_stepping, _("\ | |
13351 | Enable or disable range stepping."), _("\ | |
13352 | Show whether target-assisted range stepping is enabled."), _("\ | |
13353 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13354 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13355 | of issuing multiple single-steps. This speeds up source level\n\ | |
13356 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13357 | stepping is supported by the target. The default is on."), | |
13358 | set_range_stepping, | |
13359 | show_range_stepping, | |
13360 | &setlist, | |
13361 | &showlist); | |
13362 | ||
449092f6 CV |
13363 | /* Eventually initialize fileio. See fileio.c */ |
13364 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13365 | |
ba348170 | 13366 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13367 | special ptids with it set to != 0. */ |
ba348170 PA |
13368 | magic_null_ptid = ptid_build (42000, -1, 1); |
13369 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13370 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13371 | |
13372 | target_buf_size = 2048; | |
13373 | target_buf = xmalloc (target_buf_size); | |
c906108c | 13374 | } |
10760264 | 13375 |