Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
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 | |
94585166 DB |
78 | /* Per-program-space data key. */ |
79 | static const struct program_space_data *remote_pspace_data; | |
80 | ||
81 | /* The variable registered as the control variable used by the | |
82 | remote exec-file commands. While the remote exec-file setting is | |
83 | per-program-space, the set/show machinery uses this as the | |
84 | location of the remote exec-file value. */ | |
85 | static char *remote_exec_file_var; | |
86 | ||
6765f3e5 DJ |
87 | /* The size to align memory write packets, when practical. The protocol |
88 | does not guarantee any alignment, and gdb will generate short | |
89 | writes and unaligned writes, but even as a best-effort attempt this | |
90 | can improve bulk transfers. For instance, if a write is misaligned | |
91 | relative to the target's data bus, the stub may need to make an extra | |
92 | round trip fetching data from the target. This doesn't make a | |
93 | huge difference, but it's easy to do, so we try to be helpful. | |
94 | ||
95 | The alignment chosen is arbitrary; usually data bus width is | |
96 | important here, not the possibly larger cache line size. */ | |
97 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
98 | ||
23860348 | 99 | /* Prototypes for local functions. */ |
934b9bac | 100 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 101 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 102 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 103 | int forever, int *is_notif); |
6426a772 | 104 | |
934b9bac JK |
105 | static void async_handle_remote_sigint (int); |
106 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 107 | |
a14ed312 | 108 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 109 | |
f32dbf8c MM |
110 | static void remote_prepare_to_store (struct target_ops *self, |
111 | struct regcache *regcache); | |
c906108c | 112 | |
014f9477 TT |
113 | static void remote_open_1 (const char *, int, struct target_ops *, |
114 | int extended_p); | |
c906108c | 115 | |
de90e03d | 116 | static void remote_close (struct target_ops *self); |
c906108c | 117 | |
cbb8991c DB |
118 | struct remote_state; |
119 | ||
120 | static int remote_vkill (int pid, struct remote_state *rs); | |
121 | ||
136d6dae | 122 | static void remote_mourn (struct target_ops *ops); |
c906108c | 123 | |
a14ed312 | 124 | static void extended_remote_restart (void); |
c906108c | 125 | |
136d6dae | 126 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 127 | |
6d820c5c | 128 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 129 | |
a14ed312 | 130 | static int readchar (int timeout); |
c906108c | 131 | |
c33e31fd PA |
132 | static void remote_serial_write (const char *str, int len); |
133 | ||
7d85a9c0 | 134 | static void remote_kill (struct target_ops *ops); |
c906108c | 135 | |
6a109b6b | 136 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 137 | |
6a109b6b | 138 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 139 | |
6a3753b3 | 140 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 141 | |
65706a29 PA |
142 | static void remote_thread_events (struct target_ops *ops, int enable); |
143 | ||
934b9bac | 144 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 145 | |
a14ed312 | 146 | static void interrupt_query (void); |
c906108c | 147 | |
79d7f229 PA |
148 | static void set_general_thread (struct ptid ptid); |
149 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 150 | |
a14ed312 | 151 | static void get_offsets (void); |
c906108c | 152 | |
6d820c5c DJ |
153 | static void skip_frame (void); |
154 | ||
155 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 156 | |
a14ed312 | 157 | static int hexnumlen (ULONGEST num); |
c906108c | 158 | |
a14ed312 | 159 | static void init_remote_ops (void); |
c906108c | 160 | |
a14ed312 | 161 | static void init_extended_remote_ops (void); |
c906108c | 162 | |
1eab8a48 | 163 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 164 | |
a14ed312 | 165 | static int stubhex (int ch); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumstr (char *, ULONGEST); |
c906108c | 168 | |
a14ed312 | 169 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 170 | |
a14ed312 | 171 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 172 | |
baa336ce | 173 | static void print_packet (const char *); |
c906108c | 174 | |
a14ed312 | 175 | static void compare_sections_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void packet_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 180 | |
39f77062 | 181 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 182 | |
baa336ce | 183 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 184 | |
a14ed312 | 185 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 186 | |
5a2468f5 | 187 | struct packet_config; |
5a2468f5 | 188 | |
a14ed312 | 189 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 190 | |
bb572ddd DJ |
191 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
192 | int from_tty, | |
193 | struct cmd_list_element *c, | |
194 | const char *value); | |
195 | ||
82f73884 PA |
196 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
197 | static ptid_t read_ptid (char *buf, char **obuf); | |
198 | ||
c378d69d | 199 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 200 | |
8bd200f1 TT |
201 | static int remote_get_trace_status (struct target_ops *self, |
202 | struct trace_status *ts); | |
d5551862 | 203 | |
ab6617cc TT |
204 | static int remote_upload_tracepoints (struct target_ops *self, |
205 | struct uploaded_tp **utpp); | |
00bf0b85 | 206 | |
181e3713 TT |
207 | static int remote_upload_trace_state_variables (struct target_ops *self, |
208 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 209 | |
c8d104ad PA |
210 | static void remote_query_supported (void); |
211 | ||
36d25514 | 212 | static void remote_check_symbols (void); |
c8d104ad | 213 | |
a14ed312 | 214 | void _initialize_remote (void); |
c906108c | 215 | |
74531fed | 216 | struct stop_reply; |
74531fed | 217 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 218 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 219 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 220 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
221 | static int peek_stop_reply (ptid_t ptid); |
222 | ||
cbb8991c DB |
223 | struct threads_listing_context; |
224 | static void remove_new_fork_children (struct threads_listing_context *); | |
225 | ||
74531fed | 226 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 227 | |
e3594fd1 | 228 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 229 | |
d962ef82 DJ |
230 | static int remote_read_description_p (struct target_ops *target); |
231 | ||
176a6961 | 232 | static void remote_console_output (char *msg); |
dde08ee1 | 233 | |
efcc2da7 | 234 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 235 | |
78eff0ec | 236 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 237 | |
f4abbc16 MM |
238 | static void remote_btrace_reset (void); |
239 | ||
221e1a37 PA |
240 | static int stop_reply_queue_length (void); |
241 | ||
80152258 PA |
242 | static void readahead_cache_invalidate (void); |
243 | ||
a6b151f1 DJ |
244 | /* For "remote". */ |
245 | ||
246 | static struct cmd_list_element *remote_cmdlist; | |
247 | ||
bb572ddd DJ |
248 | /* For "set remote" and "show remote". */ |
249 | ||
250 | static struct cmd_list_element *remote_set_cmdlist; | |
251 | static struct cmd_list_element *remote_show_cmdlist; | |
252 | ||
d458bd84 PA |
253 | /* Stub vCont actions support. |
254 | ||
255 | Each field is a boolean flag indicating whether the stub reports | |
256 | support for the corresponding action. */ | |
257 | ||
258 | struct vCont_action_support | |
259 | { | |
260 | /* vCont;t */ | |
261 | int t; | |
c1e36e3e PA |
262 | |
263 | /* vCont;r */ | |
264 | int r; | |
750ce8d1 YQ |
265 | |
266 | /* vCont;s */ | |
267 | int s; | |
268 | ||
269 | /* vCont;S */ | |
270 | int S; | |
d458bd84 PA |
271 | }; |
272 | ||
c1e36e3e PA |
273 | /* Controls whether GDB is willing to use range stepping. */ |
274 | ||
275 | static int use_range_stepping = 1; | |
276 | ||
0d031856 TT |
277 | #define OPAQUETHREADBYTES 8 |
278 | ||
279 | /* a 64 bit opaque identifier */ | |
280 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
281 | ||
282 | /* About this many threadisds fit in a packet. */ | |
283 | ||
284 | #define MAXTHREADLISTRESULTS 32 | |
285 | ||
80152258 PA |
286 | /* Data for the vFile:pread readahead cache. */ |
287 | ||
288 | struct readahead_cache | |
289 | { | |
290 | /* The file descriptor for the file that is being cached. -1 if the | |
291 | cache is invalid. */ | |
292 | int fd; | |
293 | ||
294 | /* The offset into the file that the cache buffer corresponds | |
295 | to. */ | |
296 | ULONGEST offset; | |
297 | ||
298 | /* The buffer holding the cache contents. */ | |
299 | gdb_byte *buf; | |
300 | /* The buffer's size. We try to read as much as fits into a packet | |
301 | at a time. */ | |
302 | size_t bufsize; | |
303 | ||
304 | /* Cache hit and miss counters. */ | |
305 | ULONGEST hit_count; | |
306 | ULONGEST miss_count; | |
307 | }; | |
308 | ||
ea9c271d DJ |
309 | /* Description of the remote protocol state for the currently |
310 | connected target. This is per-target state, and independent of the | |
311 | selected architecture. */ | |
312 | ||
313 | struct remote_state | |
314 | { | |
315 | /* A buffer to use for incoming packets, and its current size. The | |
316 | buffer is grown dynamically for larger incoming packets. | |
317 | Outgoing packets may also be constructed in this buffer. | |
318 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
319 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
320 | packets. */ | |
321 | char *buf; | |
322 | long buf_size; | |
be2a5f71 | 323 | |
1e51243a PA |
324 | /* True if we're going through initial connection setup (finding out |
325 | about the remote side's threads, relocating symbols, etc.). */ | |
326 | int starting_up; | |
327 | ||
be2a5f71 DJ |
328 | /* If we negotiated packet size explicitly (and thus can bypass |
329 | heuristics for the largest packet size that will not overflow | |
330 | a buffer in the stub), this will be set to that packet size. | |
331 | Otherwise zero, meaning to use the guessed size. */ | |
332 | long explicit_packet_size; | |
2d717e4f DJ |
333 | |
334 | /* remote_wait is normally called when the target is running and | |
335 | waits for a stop reply packet. But sometimes we need to call it | |
336 | when the target is already stopped. We can send a "?" packet | |
337 | and have remote_wait read the response. Or, if we already have | |
338 | the response, we can stash it in BUF and tell remote_wait to | |
339 | skip calling getpkt. This flag is set when BUF contains a | |
340 | stop reply packet and the target is not waiting. */ | |
341 | int cached_wait_status; | |
a6f3e723 SL |
342 | |
343 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
344 | expect acks from each other. The connection is assumed to be | |
345 | reliable. */ | |
346 | int noack_mode; | |
82f73884 PA |
347 | |
348 | /* True if we're connected in extended remote mode. */ | |
349 | int extended; | |
350 | ||
e24a49d8 PA |
351 | /* True if we resumed the target and we're waiting for the target to |
352 | stop. In the mean time, we can't start another command/query. | |
353 | The remote server wouldn't be ready to process it, so we'd | |
354 | timeout waiting for a reply that would never come and eventually | |
355 | we'd close the connection. This can happen in asynchronous mode | |
356 | because we allow GDB commands while the target is running. */ | |
357 | int waiting_for_stop_reply; | |
74531fed | 358 | |
d458bd84 PA |
359 | /* The status of the stub support for the various vCont actions. */ |
360 | struct vCont_action_support supports_vCont; | |
782b2b07 | 361 | |
3a29589a DJ |
362 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
363 | responded to that. */ | |
364 | int ctrlc_pending_p; | |
5d93a237 TT |
365 | |
366 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
367 | remote_open knows that we don't have a file open when the program | |
368 | starts. */ | |
369 | struct serial *remote_desc; | |
47f8a51d TT |
370 | |
371 | /* These are the threads which we last sent to the remote system. The | |
372 | TID member will be -1 for all or -2 for not sent yet. */ | |
373 | ptid_t general_thread; | |
374 | ptid_t continue_thread; | |
262e1174 TT |
375 | |
376 | /* This is the traceframe which we last selected on the remote system. | |
377 | It will be -1 if no traceframe is selected. */ | |
378 | int remote_traceframe_number; | |
747dc59d TT |
379 | |
380 | char *last_pass_packet; | |
5e4a05c4 TT |
381 | |
382 | /* The last QProgramSignals packet sent to the target. We bypass | |
383 | sending a new program signals list down to the target if the new | |
384 | packet is exactly the same as the last we sent. IOW, we only let | |
385 | the target know about program signals list changes. */ | |
386 | char *last_program_signals_packet; | |
b73be471 TT |
387 | |
388 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
389 | |
390 | int last_sent_step; | |
8e88304f TT |
391 | |
392 | char *finished_object; | |
393 | char *finished_annex; | |
394 | ULONGEST finished_offset; | |
b80fafe3 TT |
395 | |
396 | /* Should we try the 'ThreadInfo' query packet? | |
397 | ||
398 | This variable (NOT available to the user: auto-detect only!) | |
399 | determines whether GDB will use the new, simpler "ThreadInfo" | |
400 | query or the older, more complex syntax for thread queries. | |
401 | This is an auto-detect variable (set to true at each connect, | |
402 | and set to false when the target fails to recognize it). */ | |
403 | int use_threadinfo_query; | |
404 | int use_threadextra_query; | |
88b496c3 | 405 | |
0d031856 TT |
406 | threadref echo_nextthread; |
407 | threadref nextthread; | |
408 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
409 | |
410 | /* The state of remote notification. */ | |
411 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
412 | |
413 | /* The branch trace configuration. */ | |
414 | struct btrace_config btrace_config; | |
15a201c8 GB |
415 | |
416 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
417 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
418 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
419 | has yet been sent. */ | |
420 | int fs_pid; | |
80152258 PA |
421 | |
422 | /* A readahead cache for vFile:pread. Often, reading a binary | |
423 | involves a sequence of small reads. E.g., when parsing an ELF | |
424 | file. A readahead cache helps mostly the case of remote | |
425 | debugging on a connection with higher latency, due to the | |
426 | request/reply nature of the RSP. We only cache data for a single | |
427 | file descriptor at a time. */ | |
428 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
429 | }; |
430 | ||
dc146f7c VP |
431 | /* Private data that we'll store in (struct thread_info)->private. */ |
432 | struct private_thread_info | |
433 | { | |
434 | char *extra; | |
79efa585 | 435 | char *name; |
dc146f7c | 436 | int core; |
799a2abe PA |
437 | |
438 | /* Whether the target stopped for a breakpoint/watchpoint. */ | |
439 | enum target_stop_reason stop_reason; | |
440 | ||
441 | /* This is set to the data address of the access causing the target | |
442 | to stop for a watchpoint. */ | |
443 | CORE_ADDR watch_data_address; | |
dc146f7c VP |
444 | }; |
445 | ||
446 | static void | |
447 | free_private_thread_info (struct private_thread_info *info) | |
448 | { | |
449 | xfree (info->extra); | |
79efa585 | 450 | xfree (info->name); |
dc146f7c VP |
451 | xfree (info); |
452 | } | |
453 | ||
ea9c271d DJ |
454 | /* This data could be associated with a target, but we do not always |
455 | have access to the current target when we need it, so for now it is | |
456 | static. This will be fine for as long as only one target is in use | |
457 | at a time. */ | |
cf792862 | 458 | static struct remote_state *remote_state; |
ea9c271d DJ |
459 | |
460 | static struct remote_state * | |
0b83947e | 461 | get_remote_state_raw (void) |
ea9c271d | 462 | { |
cf792862 TT |
463 | return remote_state; |
464 | } | |
465 | ||
466 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
467 | return it. */ | |
468 | ||
469 | static struct remote_state * | |
470 | new_remote_state (void) | |
471 | { | |
472 | struct remote_state *result = XCNEW (struct remote_state); | |
473 | ||
474 | /* The default buffer size is unimportant; it will be expanded | |
475 | whenever a larger buffer is needed. */ | |
476 | result->buf_size = 400; | |
224c3ddb | 477 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 478 | result->remote_traceframe_number = -1; |
b73be471 | 479 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 480 | result->fs_pid = -1; |
cf792862 TT |
481 | |
482 | return result; | |
ea9c271d DJ |
483 | } |
484 | ||
485 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 486 | |
ad10f812 AC |
487 | struct packet_reg |
488 | { | |
489 | long offset; /* Offset into G packet. */ | |
490 | long regnum; /* GDB's internal register number. */ | |
491 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 492 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 493 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 494 | at present. */ |
f5656ead | 495 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 496 | at present. */ |
ad10f812 AC |
497 | }; |
498 | ||
ea9c271d | 499 | struct remote_arch_state |
d01949b6 | 500 | { |
ad10f812 AC |
501 | /* Description of the remote protocol registers. */ |
502 | long sizeof_g_packet; | |
b323314b AC |
503 | |
504 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 505 | (making an array gdbarch_num_regs in size). */ |
b323314b | 506 | struct packet_reg *regs; |
ad10f812 | 507 | |
d01949b6 AC |
508 | /* This is the size (in chars) of the first response to the ``g'' |
509 | packet. It is used as a heuristic when determining the maximum | |
510 | size of memory-read and memory-write packets. A target will | |
511 | typically only reserve a buffer large enough to hold the ``g'' | |
512 | packet. The size does not include packet overhead (headers and | |
23860348 | 513 | trailers). */ |
d01949b6 AC |
514 | long actual_register_packet_size; |
515 | ||
516 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 517 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
518 | long remote_packet_size; |
519 | }; | |
520 | ||
35b1e5cc SS |
521 | /* Utility: generate error from an incoming stub packet. */ |
522 | static void | |
523 | trace_error (char *buf) | |
524 | { | |
525 | if (*buf++ != 'E') | |
526 | return; /* not an error msg */ | |
527 | switch (*buf) | |
528 | { | |
529 | case '1': /* malformed packet error */ | |
530 | if (*++buf == '0') /* general case: */ | |
531 | error (_("remote.c: error in outgoing packet.")); | |
532 | else | |
533 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
534 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
535 | default: |
536 | error (_("Target returns error code '%s'."), buf); | |
537 | } | |
538 | } | |
539 | ||
540 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
541 | static char * | |
542 | remote_get_noisy_reply (char **buf_p, | |
543 | long *sizeof_buf) | |
544 | { | |
545 | do /* Loop on reply from remote stub. */ | |
546 | { | |
547 | char *buf; | |
a744cf53 | 548 | |
0df8b418 | 549 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
550 | getpkt (buf_p, sizeof_buf, 0); |
551 | buf = *buf_p; | |
ad91cd99 | 552 | if (buf[0] == 'E') |
35b1e5cc | 553 | trace_error (buf); |
61012eef | 554 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
555 | { |
556 | ULONGEST ul; | |
557 | CORE_ADDR from, to, org_to; | |
558 | char *p, *pp; | |
559 | int adjusted_size = 0; | |
7556d4a4 | 560 | int relocated = 0; |
dde08ee1 PA |
561 | |
562 | p = buf + strlen ("qRelocInsn:"); | |
563 | pp = unpack_varlen_hex (p, &ul); | |
564 | if (*pp != ';') | |
cb91c06a | 565 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
566 | from = ul; |
567 | ||
568 | p = pp + 1; | |
a9cbf802 | 569 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
570 | to = ul; |
571 | ||
572 | org_to = to; | |
573 | ||
492d29ea | 574 | TRY |
dde08ee1 | 575 | { |
f5656ead | 576 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 577 | relocated = 1; |
dde08ee1 | 578 | } |
492d29ea | 579 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
580 | { |
581 | if (ex.error == MEMORY_ERROR) | |
582 | { | |
583 | /* Propagate memory errors silently back to the | |
584 | target. The stub may have limited the range of | |
585 | addresses we can write to, for example. */ | |
586 | } | |
587 | else | |
588 | { | |
589 | /* Something unexpectedly bad happened. Be verbose | |
590 | so we can tell what, and propagate the error back | |
591 | to the stub, so it doesn't get stuck waiting for | |
592 | a response. */ | |
593 | exception_fprintf (gdb_stderr, ex, | |
594 | _("warning: relocating instruction: ")); | |
595 | } | |
596 | putpkt ("E01"); | |
597 | } | |
492d29ea | 598 | END_CATCH |
7556d4a4 PA |
599 | |
600 | if (relocated) | |
dde08ee1 PA |
601 | { |
602 | adjusted_size = to - org_to; | |
603 | ||
bba74b36 | 604 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
605 | putpkt (buf); |
606 | } | |
dde08ee1 | 607 | } |
ad91cd99 | 608 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
609 | remote_console_output (buf + 1); /* 'O' message from stub */ |
610 | else | |
0df8b418 | 611 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
612 | } |
613 | while (1); | |
614 | } | |
3c3bea1c | 615 | |
d01949b6 AC |
616 | /* Handle for retreving the remote protocol data from gdbarch. */ |
617 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
618 | ||
ea9c271d DJ |
619 | static struct remote_arch_state * |
620 | get_remote_arch_state (void) | |
d01949b6 | 621 | { |
17d8546e | 622 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
623 | return ((struct remote_arch_state *) |
624 | gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle)); | |
d01949b6 AC |
625 | } |
626 | ||
0b83947e DJ |
627 | /* Fetch the global remote target state. */ |
628 | ||
629 | static struct remote_state * | |
630 | get_remote_state (void) | |
631 | { | |
632 | /* Make sure that the remote architecture state has been | |
633 | initialized, because doing so might reallocate rs->buf. Any | |
634 | function which calls getpkt also needs to be mindful of changes | |
635 | to rs->buf, but this call limits the number of places which run | |
636 | into trouble. */ | |
637 | get_remote_arch_state (); | |
638 | ||
639 | return get_remote_state_raw (); | |
640 | } | |
641 | ||
94585166 DB |
642 | /* Cleanup routine for the remote module's pspace data. */ |
643 | ||
644 | static void | |
645 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
646 | { | |
19ba03f4 | 647 | char *remote_exec_file = (char *) arg; |
94585166 DB |
648 | |
649 | xfree (remote_exec_file); | |
650 | } | |
651 | ||
652 | /* Fetch the remote exec-file from the current program space. */ | |
653 | ||
654 | static const char * | |
655 | get_remote_exec_file (void) | |
656 | { | |
657 | char *remote_exec_file; | |
658 | ||
19ba03f4 SM |
659 | remote_exec_file |
660 | = (char *) program_space_data (current_program_space, | |
661 | remote_pspace_data); | |
94585166 DB |
662 | if (remote_exec_file == NULL) |
663 | return ""; | |
664 | ||
665 | return remote_exec_file; | |
666 | } | |
667 | ||
668 | /* Set the remote exec file for PSPACE. */ | |
669 | ||
670 | static void | |
671 | set_pspace_remote_exec_file (struct program_space *pspace, | |
672 | char *remote_exec_file) | |
673 | { | |
19ba03f4 | 674 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
675 | |
676 | xfree (old_file); | |
677 | set_program_space_data (pspace, remote_pspace_data, | |
678 | xstrdup (remote_exec_file)); | |
679 | } | |
680 | ||
681 | /* The "set/show remote exec-file" set command hook. */ | |
682 | ||
683 | static void | |
684 | set_remote_exec_file (char *ignored, int from_tty, | |
685 | struct cmd_list_element *c) | |
686 | { | |
687 | gdb_assert (remote_exec_file_var != NULL); | |
688 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
689 | } | |
690 | ||
691 | /* The "set/show remote exec-file" show command hook. */ | |
692 | ||
693 | static void | |
694 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
695 | struct cmd_list_element *cmd, const char *value) | |
696 | { | |
697 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
698 | } | |
699 | ||
74ca34ce DJ |
700 | static int |
701 | compare_pnums (const void *lhs_, const void *rhs_) | |
702 | { | |
19ba03f4 SM |
703 | const struct packet_reg * const *lhs |
704 | = (const struct packet_reg * const *) lhs_; | |
705 | const struct packet_reg * const *rhs | |
706 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
707 | |
708 | if ((*lhs)->pnum < (*rhs)->pnum) | |
709 | return -1; | |
710 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
711 | return 0; | |
712 | else | |
713 | return 1; | |
714 | } | |
715 | ||
c21236dc PA |
716 | static int |
717 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 718 | { |
74ca34ce | 719 | int regnum, num_remote_regs, offset; |
74ca34ce | 720 | struct packet_reg **remote_regs; |
ea9c271d | 721 | |
4a22f64d | 722 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 723 | { |
c21236dc | 724 | struct packet_reg *r = ®s[regnum]; |
baef701f | 725 | |
4a22f64d | 726 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
727 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
728 | r->pnum = -1; | |
729 | else | |
730 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
731 | ||
b323314b | 732 | r->regnum = regnum; |
74ca34ce DJ |
733 | } |
734 | ||
735 | /* Define the g/G packet format as the contents of each register | |
736 | with a remote protocol number, in order of ascending protocol | |
737 | number. */ | |
738 | ||
224c3ddb | 739 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 740 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 741 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 742 | regnum++) |
c21236dc PA |
743 | if (regs[regnum].pnum != -1) |
744 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 745 | |
74ca34ce DJ |
746 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
747 | compare_pnums); | |
748 | ||
749 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
750 | { | |
751 | remote_regs[regnum]->in_g_packet = 1; | |
752 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 753 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
754 | } |
755 | ||
c21236dc PA |
756 | return offset; |
757 | } | |
758 | ||
759 | /* Given the architecture described by GDBARCH, return the remote | |
760 | protocol register's number and the register's offset in the g/G | |
761 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
762 | If the target does not have a mapping for REGNUM, return false, | |
763 | otherwise, return true. */ | |
764 | ||
765 | int | |
766 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
767 | int *pnum, int *poffset) | |
768 | { | |
769 | int sizeof_g_packet; | |
770 | struct packet_reg *regs; | |
771 | struct cleanup *old_chain; | |
772 | ||
773 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
774 | ||
224c3ddb | 775 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
776 | old_chain = make_cleanup (xfree, regs); |
777 | ||
778 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
779 | ||
780 | *pnum = regs[regnum].pnum; | |
781 | *poffset = regs[regnum].offset; | |
782 | ||
783 | do_cleanups (old_chain); | |
784 | ||
785 | return *pnum != -1; | |
786 | } | |
787 | ||
788 | static void * | |
789 | init_remote_state (struct gdbarch *gdbarch) | |
790 | { | |
791 | struct remote_state *rs = get_remote_state_raw (); | |
792 | struct remote_arch_state *rsa; | |
793 | ||
794 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
795 | ||
796 | /* Use the architecture to build a regnum<->pnum table, which will be | |
797 | 1:1 unless a feature set specifies otherwise. */ | |
798 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
799 | gdbarch_num_regs (gdbarch), | |
800 | struct packet_reg); | |
801 | ||
74ca34ce DJ |
802 | /* Record the maximum possible size of the g packet - it may turn out |
803 | to be smaller. */ | |
c21236dc | 804 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 805 | |
0df8b418 | 806 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
807 | remote stubs have a hardwired buffer size of 400 bytes |
808 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
809 | as the maximum packet-size to ensure that the packet and an extra | |
810 | NUL character can always fit in the buffer. This stops GDB | |
811 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
812 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
813 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 814 | |
ea9c271d DJ |
815 | /* This one is filled in when a ``g'' packet is received. */ |
816 | rsa->actual_register_packet_size = 0; | |
817 | ||
818 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
819 | default, adjust the size accordingly. Remember that each byte is |
820 | encoded as two characters. 32 is the overhead for the packet | |
821 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 822 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 823 | little. */ |
ea9c271d DJ |
824 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
825 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 826 | |
ea9c271d DJ |
827 | /* Make sure that the packet buffer is plenty big enough for |
828 | this architecture. */ | |
829 | if (rs->buf_size < rsa->remote_packet_size) | |
830 | { | |
831 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 832 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 833 | } |
6d820c5c | 834 | |
ea9c271d DJ |
835 | return rsa; |
836 | } | |
837 | ||
838 | /* Return the current allowed size of a remote packet. This is | |
839 | inferred from the current architecture, and should be used to | |
840 | limit the length of outgoing packets. */ | |
841 | static long | |
842 | get_remote_packet_size (void) | |
843 | { | |
be2a5f71 | 844 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
845 | struct remote_arch_state *rsa = get_remote_arch_state (); |
846 | ||
be2a5f71 DJ |
847 | if (rs->explicit_packet_size) |
848 | return rs->explicit_packet_size; | |
849 | ||
ea9c271d | 850 | return rsa->remote_packet_size; |
d01949b6 AC |
851 | } |
852 | ||
ad10f812 | 853 | static struct packet_reg * |
ea9c271d | 854 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 855 | { |
f5656ead | 856 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
857 | return NULL; |
858 | else | |
ad10f812 | 859 | { |
ea9c271d | 860 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 861 | |
b323314b AC |
862 | gdb_assert (r->regnum == regnum); |
863 | return r; | |
ad10f812 | 864 | } |
ad10f812 AC |
865 | } |
866 | ||
867 | static struct packet_reg * | |
ea9c271d | 868 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 869 | { |
b323314b | 870 | int i; |
a744cf53 | 871 | |
f5656ead | 872 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 873 | { |
ea9c271d | 874 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 875 | |
b323314b AC |
876 | if (r->pnum == pnum) |
877 | return r; | |
ad10f812 AC |
878 | } |
879 | return NULL; | |
d01949b6 AC |
880 | } |
881 | ||
c906108c SS |
882 | static struct target_ops remote_ops; |
883 | ||
884 | static struct target_ops extended_remote_ops; | |
885 | ||
6426a772 JM |
886 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
887 | ``forever'' still use the normal timeout mechanism. This is | |
888 | currently used by the ASYNC code to guarentee that target reads | |
889 | during the initial connect always time-out. Once getpkt has been | |
890 | modified to return a timeout indication and, in turn | |
891 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 892 | this can go away. */ |
6426a772 JM |
893 | static int wait_forever_enabled_p = 1; |
894 | ||
9a7071a8 JB |
895 | /* Allow the user to specify what sequence to send to the remote |
896 | when he requests a program interruption: Although ^C is usually | |
897 | what remote systems expect (this is the default, here), it is | |
898 | sometimes preferable to send a break. On other systems such | |
899 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
900 | is required in order to interrupt the execution. */ | |
901 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
902 | const char interrupt_sequence_break[] = "BREAK"; | |
903 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 904 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
905 | { |
906 | interrupt_sequence_control_c, | |
907 | interrupt_sequence_break, | |
908 | interrupt_sequence_break_g, | |
909 | NULL | |
910 | }; | |
911 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
912 | ||
913 | static void | |
914 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
915 | struct cmd_list_element *c, | |
916 | const char *value) | |
917 | { | |
918 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
919 | fprintf_filtered (file, | |
920 | _("Send the ASCII ETX character (Ctrl-c) " | |
921 | "to the remote target to interrupt the " | |
922 | "execution of the program.\n")); | |
923 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
924 | fprintf_filtered (file, | |
925 | _("send a break signal to the remote target " | |
926 | "to interrupt the execution of the program.\n")); | |
927 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
928 | fprintf_filtered (file, | |
929 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
930 | "the remote target to interrupt the execution " | |
931 | "of Linux kernel.\n")); | |
932 | else | |
933 | internal_error (__FILE__, __LINE__, | |
934 | _("Invalid value for interrupt_sequence_mode: %s."), | |
935 | interrupt_sequence_mode); | |
936 | } | |
6426a772 | 937 | |
9a7071a8 JB |
938 | /* This boolean variable specifies whether interrupt_sequence is sent |
939 | to the remote target when gdb connects to it. | |
940 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
941 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
942 | static int interrupt_on_connect = 0; | |
c906108c | 943 | |
9a7071a8 JB |
944 | /* This variable is used to implement the "set/show remotebreak" commands. |
945 | Since these commands are now deprecated in favor of "set/show remote | |
946 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
947 | static int remote_break; |
948 | ||
9a7071a8 JB |
949 | static void |
950 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
951 | { | |
952 | if (remote_break) | |
953 | interrupt_sequence_mode = interrupt_sequence_break; | |
954 | else | |
955 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
956 | } | |
957 | ||
958 | static void | |
959 | show_remotebreak (struct ui_file *file, int from_tty, | |
960 | struct cmd_list_element *c, | |
961 | const char *value) | |
962 | { | |
963 | } | |
964 | ||
c906108c SS |
965 | /* This variable sets the number of bits in an address that are to be |
966 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 967 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
968 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
969 | initial implementation of remote.c restricted the address sent in | |
970 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
971 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
972 | address was never sent. Since fixing this bug may cause a break in | |
973 | some remote targets this variable is principly provided to | |
23860348 | 974 | facilitate backward compatibility. */ |
c906108c | 975 | |
883b9c6c | 976 | static unsigned int remote_address_size; |
c906108c | 977 | |
75c99385 PA |
978 | /* Temporary to track who currently owns the terminal. See |
979 | remote_terminal_* for more details. */ | |
6426a772 JM |
980 | |
981 | static int remote_async_terminal_ours_p; | |
982 | ||
11cf8741 | 983 | \f |
11cf8741 | 984 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
985 | memory read/write packet. MIN (rsa->remote_packet_size, |
986 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 987 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
988 | (speed up transfers). The variables ``preferred_*'' (the user |
989 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 990 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
991 | |
992 | struct memory_packet_config | |
993 | { | |
994 | char *name; | |
995 | long size; | |
996 | int fixed_p; | |
997 | }; | |
998 | ||
a5c0808e PA |
999 | /* The default max memory-write-packet-size. The 16k is historical. |
1000 | (It came from older GDB's using alloca for buffers and the | |
1001 | knowledge (folklore?) that some hosts don't cope very well with | |
1002 | large alloca calls.) */ | |
1003 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1004 | ||
1005 | /* The minimum remote packet size for memory transfers. Ensures we | |
1006 | can write at least one byte. */ | |
1007 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1008 | ||
11cf8741 JM |
1009 | /* Compute the current size of a read/write packet. Since this makes |
1010 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1011 | ||
1012 | static long | |
1013 | get_memory_packet_size (struct memory_packet_config *config) | |
1014 | { | |
d01949b6 | 1015 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1016 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1017 | ||
11cf8741 JM |
1018 | long what_they_get; |
1019 | if (config->fixed_p) | |
1020 | { | |
1021 | if (config->size <= 0) | |
a5c0808e | 1022 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1023 | else |
1024 | what_they_get = config->size; | |
1025 | } | |
1026 | else | |
1027 | { | |
ea9c271d | 1028 | what_they_get = get_remote_packet_size (); |
23860348 | 1029 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1030 | if (config->size > 0 |
1031 | && what_they_get > config->size) | |
1032 | what_they_get = config->size; | |
be2a5f71 DJ |
1033 | |
1034 | /* Limit it to the size of the targets ``g'' response unless we have | |
1035 | permission from the stub to use a larger packet size. */ | |
1036 | if (rs->explicit_packet_size == 0 | |
1037 | && rsa->actual_register_packet_size > 0 | |
1038 | && what_they_get > rsa->actual_register_packet_size) | |
1039 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1040 | } |
a5c0808e PA |
1041 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1042 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1043 | |
1044 | /* Make sure there is room in the global buffer for this packet | |
1045 | (including its trailing NUL byte). */ | |
1046 | if (rs->buf_size < what_they_get + 1) | |
1047 | { | |
1048 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1049 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1050 | } |
1051 | ||
11cf8741 JM |
1052 | return what_they_get; |
1053 | } | |
1054 | ||
0df8b418 | 1055 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1056 | something really big then do a sanity check. */ |
11cf8741 JM |
1057 | |
1058 | static void | |
1059 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1060 | { | |
1061 | int fixed_p = config->fixed_p; | |
1062 | long size = config->size; | |
a744cf53 | 1063 | |
11cf8741 | 1064 | if (args == NULL) |
8a3fe4f8 | 1065 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1066 | else if (strcmp (args, "hard") == 0 |
1067 | || strcmp (args, "fixed") == 0) | |
1068 | fixed_p = 1; | |
1069 | else if (strcmp (args, "soft") == 0 | |
1070 | || strcmp (args, "limit") == 0) | |
1071 | fixed_p = 0; | |
1072 | else | |
1073 | { | |
1074 | char *end; | |
a744cf53 | 1075 | |
11cf8741 JM |
1076 | size = strtoul (args, &end, 0); |
1077 | if (args == end) | |
8a3fe4f8 | 1078 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1079 | |
1080 | /* Instead of explicitly capping the size of a packet to or | |
1081 | disallowing it, the user is allowed to set the size to | |
1082 | something arbitrarily large. */ | |
11cf8741 | 1083 | } |
a5c0808e PA |
1084 | |
1085 | /* So that the query shows the correct value. */ | |
1086 | if (size <= 0) | |
1087 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1088 | ||
23860348 | 1089 | /* Extra checks? */ |
11cf8741 JM |
1090 | if (fixed_p && !config->fixed_p) |
1091 | { | |
e2e0b3e5 AC |
1092 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1093 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1094 | config->name, size)) |
8a3fe4f8 | 1095 | error (_("Packet size not changed.")); |
11cf8741 | 1096 | } |
23860348 | 1097 | /* Update the config. */ |
11cf8741 JM |
1098 | config->fixed_p = fixed_p; |
1099 | config->size = size; | |
1100 | } | |
1101 | ||
1102 | static void | |
1103 | show_memory_packet_size (struct memory_packet_config *config) | |
1104 | { | |
a3f17187 | 1105 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1106 | if (config->fixed_p) |
a3f17187 | 1107 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1108 | get_memory_packet_size (config)); |
1109 | else | |
a3f17187 | 1110 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1111 | get_memory_packet_size (config)); |
1112 | } | |
1113 | ||
1114 | static struct memory_packet_config memory_write_packet_config = | |
1115 | { | |
1116 | "memory-write-packet-size", | |
1117 | }; | |
1118 | ||
1119 | static void | |
1120 | set_memory_write_packet_size (char *args, int from_tty) | |
1121 | { | |
1122 | set_memory_packet_size (args, &memory_write_packet_config); | |
1123 | } | |
1124 | ||
1125 | static void | |
1126 | show_memory_write_packet_size (char *args, int from_tty) | |
1127 | { | |
1128 | show_memory_packet_size (&memory_write_packet_config); | |
1129 | } | |
1130 | ||
1131 | static long | |
1132 | get_memory_write_packet_size (void) | |
1133 | { | |
1134 | return get_memory_packet_size (&memory_write_packet_config); | |
1135 | } | |
1136 | ||
1137 | static struct memory_packet_config memory_read_packet_config = | |
1138 | { | |
1139 | "memory-read-packet-size", | |
1140 | }; | |
1141 | ||
1142 | static void | |
1143 | set_memory_read_packet_size (char *args, int from_tty) | |
1144 | { | |
1145 | set_memory_packet_size (args, &memory_read_packet_config); | |
1146 | } | |
1147 | ||
1148 | static void | |
1149 | show_memory_read_packet_size (char *args, int from_tty) | |
1150 | { | |
1151 | show_memory_packet_size (&memory_read_packet_config); | |
1152 | } | |
1153 | ||
1154 | static long | |
1155 | get_memory_read_packet_size (void) | |
1156 | { | |
1157 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1158 | |
11cf8741 JM |
1159 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1160 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1161 | increased beyond this. */ |
1162 | if (size > get_remote_packet_size ()) | |
1163 | size = get_remote_packet_size (); | |
11cf8741 JM |
1164 | return size; |
1165 | } | |
1166 | ||
11cf8741 | 1167 | \f |
5a2468f5 | 1168 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1169 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1170 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1171 | |
1172 | enum packet_support | |
1173 | { | |
1174 | PACKET_SUPPORT_UNKNOWN = 0, | |
1175 | PACKET_ENABLE, | |
1176 | PACKET_DISABLE | |
1177 | }; | |
1178 | ||
5a2468f5 JM |
1179 | struct packet_config |
1180 | { | |
bb572ddd DJ |
1181 | const char *name; |
1182 | const char *title; | |
4082afcc PA |
1183 | |
1184 | /* If auto, GDB auto-detects support for this packet or feature, | |
1185 | either through qSupported, or by trying the packet and looking | |
1186 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1187 | packet. If false, the packet is disabled. Configs that don't |
1188 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1189 | enum auto_boolean detect; |
4082afcc PA |
1190 | |
1191 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1192 | enum packet_support support; |
1193 | }; | |
1194 | ||
d471ea57 | 1195 | /* Analyze a packet's return value and update the packet config |
23860348 | 1196 | accordingly. */ |
d471ea57 AC |
1197 | |
1198 | enum packet_result | |
1199 | { | |
1200 | PACKET_ERROR, | |
1201 | PACKET_OK, | |
1202 | PACKET_UNKNOWN | |
1203 | }; | |
1204 | ||
4082afcc PA |
1205 | static enum packet_support packet_config_support (struct packet_config *config); |
1206 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1207 | |
1208 | static void | |
fba45db2 | 1209 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1210 | { |
1211 | char *support = "internal-error"; | |
a744cf53 | 1212 | |
4082afcc | 1213 | switch (packet_config_support (config)) |
5a2468f5 JM |
1214 | { |
1215 | case PACKET_ENABLE: | |
1216 | support = "enabled"; | |
1217 | break; | |
1218 | case PACKET_DISABLE: | |
1219 | support = "disabled"; | |
1220 | break; | |
1221 | case PACKET_SUPPORT_UNKNOWN: | |
1222 | support = "unknown"; | |
1223 | break; | |
1224 | } | |
1225 | switch (config->detect) | |
1226 | { | |
7f19b9a2 | 1227 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1228 | printf_filtered (_("Support for the `%s' packet " |
1229 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1230 | config->name, support); |
5a2468f5 | 1231 | break; |
7f19b9a2 AC |
1232 | case AUTO_BOOLEAN_TRUE: |
1233 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1234 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1235 | config->name, support); | |
8e248173 | 1236 | break; |
5a2468f5 JM |
1237 | } |
1238 | } | |
1239 | ||
1240 | static void | |
bb572ddd DJ |
1241 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1242 | const char *title, int legacy) | |
d471ea57 | 1243 | { |
5a2468f5 JM |
1244 | char *set_doc; |
1245 | char *show_doc; | |
d471ea57 | 1246 | char *cmd_name; |
3ed07be4 | 1247 | |
5a2468f5 JM |
1248 | config->name = name; |
1249 | config->title = title; | |
b435e160 AC |
1250 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1251 | name, title); | |
3e43a32a MS |
1252 | show_doc = xstrprintf ("Show current use of remote " |
1253 | "protocol `%s' (%s) packet", | |
b435e160 | 1254 | name, title); |
d471ea57 | 1255 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1256 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1257 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1258 | &config->detect, set_doc, |
1259 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1260 | NULL, |
bb572ddd DJ |
1261 | show_remote_protocol_packet_cmd, |
1262 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1263 | /* The command code copies the documentation strings. */ |
1264 | xfree (set_doc); | |
1265 | xfree (show_doc); | |
23860348 | 1266 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1267 | if (legacy) |
1268 | { | |
1269 | char *legacy_name; | |
a744cf53 | 1270 | |
b435e160 | 1271 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1272 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1273 | &remote_set_cmdlist); |
d471ea57 | 1274 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1275 | &remote_show_cmdlist); |
d471ea57 | 1276 | } |
5a2468f5 JM |
1277 | } |
1278 | ||
d471ea57 | 1279 | static enum packet_result |
a76d924d | 1280 | packet_check_result (const char *buf) |
5a2468f5 | 1281 | { |
d471ea57 | 1282 | if (buf[0] != '\0') |
5a2468f5 | 1283 | { |
d471ea57 | 1284 | /* The stub recognized the packet request. Check that the |
23860348 | 1285 | operation succeeded. */ |
a76d924d DJ |
1286 | if (buf[0] == 'E' |
1287 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1288 | && buf[3] == '\0') | |
1289 | /* "Enn" - definitly an error. */ | |
1290 | return PACKET_ERROR; | |
1291 | ||
1292 | /* Always treat "E." as an error. This will be used for | |
1293 | more verbose error messages, such as E.memtypes. */ | |
1294 | if (buf[0] == 'E' && buf[1] == '.') | |
1295 | return PACKET_ERROR; | |
1296 | ||
1297 | /* The packet may or may not be OK. Just assume it is. */ | |
1298 | return PACKET_OK; | |
1299 | } | |
1300 | else | |
1301 | /* The stub does not support the packet. */ | |
1302 | return PACKET_UNKNOWN; | |
1303 | } | |
1304 | ||
1305 | static enum packet_result | |
1306 | packet_ok (const char *buf, struct packet_config *config) | |
1307 | { | |
1308 | enum packet_result result; | |
1309 | ||
4082afcc PA |
1310 | if (config->detect != AUTO_BOOLEAN_TRUE |
1311 | && config->support == PACKET_DISABLE) | |
1312 | internal_error (__FILE__, __LINE__, | |
1313 | _("packet_ok: attempt to use a disabled packet")); | |
1314 | ||
a76d924d DJ |
1315 | result = packet_check_result (buf); |
1316 | switch (result) | |
1317 | { | |
1318 | case PACKET_OK: | |
1319 | case PACKET_ERROR: | |
1320 | /* The stub recognized the packet request. */ | |
4082afcc | 1321 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1322 | { |
d471ea57 AC |
1323 | if (remote_debug) |
1324 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1325 | "Packet %s (%s) is supported\n", |
1326 | config->name, config->title); | |
d471ea57 | 1327 | config->support = PACKET_ENABLE; |
d471ea57 | 1328 | } |
a76d924d DJ |
1329 | break; |
1330 | case PACKET_UNKNOWN: | |
23860348 | 1331 | /* The stub does not support the packet. */ |
4082afcc PA |
1332 | if (config->detect == AUTO_BOOLEAN_AUTO |
1333 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1334 | { |
4082afcc PA |
1335 | /* If the stub previously indicated that the packet was |
1336 | supported then there is a protocol error. */ | |
1337 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1338 | config->name, config->title); | |
1339 | } | |
1340 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1341 | { | |
1342 | /* The user set it wrong. */ | |
1343 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1344 | config->name, config->title); | |
d471ea57 | 1345 | } |
4082afcc PA |
1346 | |
1347 | if (remote_debug) | |
1348 | fprintf_unfiltered (gdb_stdlog, | |
1349 | "Packet %s (%s) is NOT supported\n", | |
1350 | config->name, config->title); | |
1351 | config->support = PACKET_DISABLE; | |
a76d924d | 1352 | break; |
5a2468f5 | 1353 | } |
a76d924d DJ |
1354 | |
1355 | return result; | |
5a2468f5 JM |
1356 | } |
1357 | ||
444abaca DJ |
1358 | enum { |
1359 | PACKET_vCont = 0, | |
1360 | PACKET_X, | |
1361 | PACKET_qSymbol, | |
1362 | PACKET_P, | |
1363 | PACKET_p, | |
1364 | PACKET_Z0, | |
1365 | PACKET_Z1, | |
1366 | PACKET_Z2, | |
1367 | PACKET_Z3, | |
1368 | PACKET_Z4, | |
15a201c8 | 1369 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1370 | PACKET_vFile_open, |
1371 | PACKET_vFile_pread, | |
1372 | PACKET_vFile_pwrite, | |
1373 | PACKET_vFile_close, | |
1374 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1375 | PACKET_vFile_readlink, |
0a93529c | 1376 | PACKET_vFile_fstat, |
0876f84a | 1377 | PACKET_qXfer_auxv, |
23181151 | 1378 | PACKET_qXfer_features, |
c78fa86a | 1379 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1380 | PACKET_qXfer_libraries, |
2268b414 | 1381 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1382 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1383 | PACKET_qXfer_spu_read, |
1384 | PACKET_qXfer_spu_write, | |
07e059b5 | 1385 | PACKET_qXfer_osdata, |
dc146f7c | 1386 | PACKET_qXfer_threads, |
0fb4aa4b | 1387 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1388 | PACKET_qXfer_traceframe_info, |
169081d0 | 1389 | PACKET_qXfer_uib, |
711e434b | 1390 | PACKET_qGetTIBAddr, |
444abaca | 1391 | PACKET_qGetTLSAddr, |
be2a5f71 | 1392 | PACKET_qSupported, |
bd3eecc3 | 1393 | PACKET_qTStatus, |
89be2091 | 1394 | PACKET_QPassSignals, |
9b224c5e | 1395 | PACKET_QProgramSignals, |
936d2992 | 1396 | PACKET_qCRC, |
08388c79 | 1397 | PACKET_qSearch_memory, |
2d717e4f DJ |
1398 | PACKET_vAttach, |
1399 | PACKET_vRun, | |
a6f3e723 | 1400 | PACKET_QStartNoAckMode, |
82f73884 | 1401 | PACKET_vKill, |
4aa995e1 PA |
1402 | PACKET_qXfer_siginfo_read, |
1403 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1404 | PACKET_qAttached, |
4082afcc PA |
1405 | |
1406 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1407 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1408 | |
1409 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1410 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1411 | |
1412 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1413 | PACKET_BreakpointCommands, |
4082afcc PA |
1414 | |
1415 | /* Support for fast tracepoints. */ | |
7a697b8d | 1416 | PACKET_FastTracepoints, |
4082afcc PA |
1417 | |
1418 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1419 | PACKET_StaticTracepoints, |
4082afcc PA |
1420 | |
1421 | /* Support for installing tracepoints while a trace experiment is | |
1422 | running. */ | |
1e4d1764 | 1423 | PACKET_InstallInTrace, |
4082afcc | 1424 | |
40ab02ce MS |
1425 | PACKET_bc, |
1426 | PACKET_bs, | |
409873ef | 1427 | PACKET_TracepointSource, |
d914c394 | 1428 | PACKET_QAllow, |
78d85199 | 1429 | PACKET_qXfer_fdpic, |
03583c20 | 1430 | PACKET_QDisableRandomization, |
d1feda86 | 1431 | PACKET_QAgent, |
f6f899bf | 1432 | PACKET_QTBuffer_size, |
9accd112 MM |
1433 | PACKET_Qbtrace_off, |
1434 | PACKET_Qbtrace_bts, | |
b20a6524 | 1435 | PACKET_Qbtrace_pt, |
9accd112 | 1436 | PACKET_qXfer_btrace, |
4082afcc PA |
1437 | |
1438 | /* Support for the QNonStop packet. */ | |
1439 | PACKET_QNonStop, | |
1440 | ||
65706a29 PA |
1441 | /* Support for the QThreadEvents packet. */ |
1442 | PACKET_QThreadEvents, | |
1443 | ||
4082afcc PA |
1444 | /* Support for multi-process extensions. */ |
1445 | PACKET_multiprocess_feature, | |
1446 | ||
1447 | /* Support for enabling and disabling tracepoints while a trace | |
1448 | experiment is running. */ | |
1449 | PACKET_EnableDisableTracepoints_feature, | |
1450 | ||
1451 | /* Support for collecting strings using the tracenz bytecode. */ | |
1452 | PACKET_tracenz_feature, | |
1453 | ||
1454 | /* Support for continuing to run a trace experiment while GDB is | |
1455 | disconnected. */ | |
1456 | PACKET_DisconnectedTracing_feature, | |
1457 | ||
1458 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1459 | PACKET_augmented_libraries_svr4_read_feature, | |
1460 | ||
f4abbc16 MM |
1461 | /* Support for the qXfer:btrace-conf:read packet. */ |
1462 | PACKET_qXfer_btrace_conf, | |
1463 | ||
d33501a5 MM |
1464 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1465 | PACKET_Qbtrace_conf_bts_size, | |
1466 | ||
f7e6eed5 PA |
1467 | /* Support for swbreak+ feature. */ |
1468 | PACKET_swbreak_feature, | |
1469 | ||
1470 | /* Support for hwbreak+ feature. */ | |
1471 | PACKET_hwbreak_feature, | |
1472 | ||
89245bc0 DB |
1473 | /* Support for fork events. */ |
1474 | PACKET_fork_event_feature, | |
1475 | ||
1476 | /* Support for vfork events. */ | |
1477 | PACKET_vfork_event_feature, | |
1478 | ||
b20a6524 MM |
1479 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1480 | PACKET_Qbtrace_conf_pt_size, | |
1481 | ||
94585166 DB |
1482 | /* Support for exec events. */ |
1483 | PACKET_exec_event_feature, | |
1484 | ||
750ce8d1 YQ |
1485 | /* Support for query supported vCont actions. */ |
1486 | PACKET_vContSupported, | |
1487 | ||
de979965 PA |
1488 | /* Support remote CTRL-C. */ |
1489 | PACKET_vCtrlC, | |
1490 | ||
444abaca DJ |
1491 | PACKET_MAX |
1492 | }; | |
506fb367 | 1493 | |
444abaca | 1494 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1495 | |
f7e6eed5 PA |
1496 | /* Returns the packet's corresponding "set remote foo-packet" command |
1497 | state. See struct packet_config for more details. */ | |
1498 | ||
1499 | static enum auto_boolean | |
1500 | packet_set_cmd_state (int packet) | |
1501 | { | |
1502 | return remote_protocol_packets[packet].detect; | |
1503 | } | |
1504 | ||
4082afcc PA |
1505 | /* Returns whether a given packet or feature is supported. This takes |
1506 | into account the state of the corresponding "set remote foo-packet" | |
1507 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1508 | |
4082afcc PA |
1509 | static enum packet_support |
1510 | packet_config_support (struct packet_config *config) | |
1511 | { | |
1512 | switch (config->detect) | |
444abaca | 1513 | { |
4082afcc PA |
1514 | case AUTO_BOOLEAN_TRUE: |
1515 | return PACKET_ENABLE; | |
1516 | case AUTO_BOOLEAN_FALSE: | |
1517 | return PACKET_DISABLE; | |
1518 | case AUTO_BOOLEAN_AUTO: | |
1519 | return config->support; | |
1520 | default: | |
1521 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1522 | } |
4082afcc PA |
1523 | } |
1524 | ||
1525 | /* Same as packet_config_support, but takes the packet's enum value as | |
1526 | argument. */ | |
1527 | ||
1528 | static enum packet_support | |
1529 | packet_support (int packet) | |
1530 | { | |
1531 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1532 | ||
1533 | return packet_config_support (config); | |
dc8acb97 MS |
1534 | } |
1535 | ||
5a2468f5 | 1536 | static void |
444abaca DJ |
1537 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1538 | struct cmd_list_element *c, | |
1539 | const char *value) | |
5a2468f5 | 1540 | { |
444abaca | 1541 | struct packet_config *packet; |
5a2468f5 | 1542 | |
444abaca DJ |
1543 | for (packet = remote_protocol_packets; |
1544 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1545 | packet++) | |
1546 | { | |
1547 | if (&packet->detect == c->var) | |
1548 | { | |
1549 | show_packet_config_cmd (packet); | |
1550 | return; | |
1551 | } | |
1552 | } | |
9b20d036 | 1553 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1554 | c->name); |
5a2468f5 JM |
1555 | } |
1556 | ||
d471ea57 AC |
1557 | /* Should we try one of the 'Z' requests? */ |
1558 | ||
1559 | enum Z_packet_type | |
1560 | { | |
1561 | Z_PACKET_SOFTWARE_BP, | |
1562 | Z_PACKET_HARDWARE_BP, | |
1563 | Z_PACKET_WRITE_WP, | |
1564 | Z_PACKET_READ_WP, | |
1565 | Z_PACKET_ACCESS_WP, | |
1566 | NR_Z_PACKET_TYPES | |
1567 | }; | |
96baa820 | 1568 | |
d471ea57 | 1569 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1570 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1571 | |
7f19b9a2 | 1572 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1573 | |
1574 | static void | |
fba45db2 KB |
1575 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1576 | struct cmd_list_element *c) | |
96baa820 | 1577 | { |
d471ea57 | 1578 | int i; |
a744cf53 | 1579 | |
d471ea57 | 1580 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1581 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1582 | } |
1583 | ||
1584 | static void | |
08546159 AC |
1585 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1586 | struct cmd_list_element *c, | |
1587 | const char *value) | |
96baa820 | 1588 | { |
d471ea57 | 1589 | int i; |
a744cf53 | 1590 | |
d471ea57 AC |
1591 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1592 | { | |
444abaca | 1593 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1594 | } |
96baa820 JM |
1595 | } |
1596 | ||
4082afcc PA |
1597 | /* Returns true if the multi-process extensions are in effect. */ |
1598 | ||
1599 | static int | |
1600 | remote_multi_process_p (struct remote_state *rs) | |
1601 | { | |
1602 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1603 | } | |
1604 | ||
de0d863e DB |
1605 | /* Returns true if fork events are supported. */ |
1606 | ||
1607 | static int | |
1608 | remote_fork_event_p (struct remote_state *rs) | |
1609 | { | |
1610 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1611 | } | |
1612 | ||
c269dbdb DB |
1613 | /* Returns true if vfork events are supported. */ |
1614 | ||
1615 | static int | |
1616 | remote_vfork_event_p (struct remote_state *rs) | |
1617 | { | |
1618 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1619 | } | |
1620 | ||
d46addbb DB |
1621 | /* Returns true if exec events are supported. */ |
1622 | ||
1623 | static int | |
1624 | remote_exec_event_p (struct remote_state *rs) | |
1625 | { | |
1626 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1627 | } | |
1628 | ||
cbb8991c DB |
1629 | /* Insert fork catchpoint target routine. If fork events are enabled |
1630 | then return success, nothing more to do. */ | |
1631 | ||
1632 | static int | |
1633 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1634 | { | |
1635 | struct remote_state *rs = get_remote_state (); | |
1636 | ||
1637 | return !remote_fork_event_p (rs); | |
1638 | } | |
1639 | ||
1640 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1641 | return success. */ | |
1642 | ||
1643 | static int | |
1644 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1645 | { | |
1646 | return 0; | |
1647 | } | |
1648 | ||
1649 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1650 | then return success, nothing more to do. */ | |
1651 | ||
1652 | static int | |
1653 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1654 | { | |
1655 | struct remote_state *rs = get_remote_state (); | |
1656 | ||
1657 | return !remote_vfork_event_p (rs); | |
1658 | } | |
1659 | ||
1660 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1661 | return success. */ | |
1662 | ||
1663 | static int | |
1664 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1665 | { | |
1666 | return 0; | |
1667 | } | |
1668 | ||
d46addbb DB |
1669 | /* Insert exec catchpoint target routine. If exec events are |
1670 | enabled, just return success. */ | |
1671 | ||
1672 | static int | |
1673 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1674 | { | |
1675 | struct remote_state *rs = get_remote_state (); | |
1676 | ||
1677 | return !remote_exec_event_p (rs); | |
1678 | } | |
1679 | ||
1680 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1681 | return success. */ | |
1682 | ||
1683 | static int | |
1684 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1685 | { | |
1686 | return 0; | |
1687 | } | |
1688 | ||
23860348 | 1689 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1690 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1691 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1692 | |
74531fed PA |
1693 | \f |
1694 | /* Asynchronous signal handle registered as event loop source for | |
1695 | when we have pending events ready to be passed to the core. */ | |
1696 | ||
1697 | static struct async_event_handler *remote_async_inferior_event_token; | |
1698 | ||
c906108c SS |
1699 | \f |
1700 | ||
79d7f229 PA |
1701 | static ptid_t magic_null_ptid; |
1702 | static ptid_t not_sent_ptid; | |
1703 | static ptid_t any_thread_ptid; | |
1704 | ||
0b16c5cf PA |
1705 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1706 | detach instead of killing it when bailing out). */ | |
1707 | ||
1708 | static int | |
1709 | remote_query_attached (int pid) | |
1710 | { | |
1711 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1712 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1713 | |
4082afcc | 1714 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1715 | return 0; |
1716 | ||
1717 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1718 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1719 | else |
bba74b36 | 1720 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1721 | |
1722 | putpkt (rs->buf); | |
1723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1724 | ||
1725 | switch (packet_ok (rs->buf, | |
1554e9be | 1726 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1727 | { |
1728 | case PACKET_OK: | |
1729 | if (strcmp (rs->buf, "1") == 0) | |
1730 | return 1; | |
1731 | break; | |
1732 | case PACKET_ERROR: | |
1733 | warning (_("Remote failure reply: %s"), rs->buf); | |
1734 | break; | |
1735 | case PACKET_UNKNOWN: | |
1736 | break; | |
1737 | } | |
1738 | ||
1739 | return 0; | |
1740 | } | |
1741 | ||
49c62f2e PA |
1742 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1743 | has been invented by GDB, instead of reported by the target. Since | |
1744 | we can be connected to a remote system before before knowing about | |
1745 | any inferior, mark the target with execution when we find the first | |
1746 | inferior. If ATTACHED is 1, then we had just attached to this | |
1747 | inferior. If it is 0, then we just created this inferior. If it | |
1748 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1749 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1750 | attempt to open this inferior's executable as the main executable | |
1751 | if no main executable is open already. */ | |
1941c569 PA |
1752 | |
1753 | static struct inferior * | |
1b6e6f5c GB |
1754 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1755 | int try_open_exec) | |
1941c569 | 1756 | { |
1941c569 PA |
1757 | struct inferior *inf; |
1758 | ||
0b16c5cf PA |
1759 | /* Check whether this process we're learning about is to be |
1760 | considered attached, or if is to be considered to have been | |
1761 | spawned by the stub. */ | |
1762 | if (attached == -1) | |
1763 | attached = remote_query_attached (pid); | |
1764 | ||
f5656ead | 1765 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1766 | { |
1767 | /* If the target shares code across all inferiors, then every | |
1768 | attach adds a new inferior. */ | |
1769 | inf = add_inferior (pid); | |
1770 | ||
1771 | /* ... and every inferior is bound to the same program space. | |
1772 | However, each inferior may still have its own address | |
1773 | space. */ | |
1774 | inf->aspace = maybe_new_address_space (); | |
1775 | inf->pspace = current_program_space; | |
1776 | } | |
1777 | else | |
1778 | { | |
1779 | /* In the traditional debugging scenario, there's a 1-1 match | |
1780 | between program/address spaces. We simply bind the inferior | |
1781 | to the program space's address space. */ | |
1782 | inf = current_inferior (); | |
1783 | inferior_appeared (inf, pid); | |
1784 | } | |
1941c569 | 1785 | |
0b16c5cf | 1786 | inf->attach_flag = attached; |
49c62f2e | 1787 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1788 | |
1b6e6f5c GB |
1789 | /* If no main executable is currently open then attempt to |
1790 | open the file that was executed to create this inferior. */ | |
835205d0 | 1791 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1792 | exec_file_locate_attach (pid, 1); |
1793 | ||
1941c569 PA |
1794 | return inf; |
1795 | } | |
1796 | ||
1797 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1798 | according to RUNNING. */ | |
1799 | ||
c906108c | 1800 | static void |
1941c569 | 1801 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1802 | { |
b7ea362b PA |
1803 | struct remote_state *rs = get_remote_state (); |
1804 | ||
1805 | /* GDB historically didn't pull threads in the initial connection | |
1806 | setup. If the remote target doesn't even have a concept of | |
1807 | threads (e.g., a bare-metal target), even if internally we | |
1808 | consider that a single-threaded target, mentioning a new thread | |
1809 | might be confusing to the user. Be silent then, preserving the | |
1810 | age old behavior. */ | |
1811 | if (rs->starting_up) | |
1812 | add_thread_silent (ptid); | |
1813 | else | |
1814 | add_thread (ptid); | |
1941c569 PA |
1815 | |
1816 | set_executing (ptid, running); | |
1817 | set_running (ptid, running); | |
1818 | } | |
1819 | ||
1820 | /* Come here when we learn about a thread id from the remote target. | |
1821 | It may be the first time we hear about such thread, so take the | |
1822 | opportunity to add it to GDB's thread list. In case this is the | |
1823 | first time we're noticing its corresponding inferior, add it to | |
1824 | GDB's inferior list as well. */ | |
1825 | ||
1826 | static void | |
1827 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1828 | { | |
c906108c SS |
1829 | /* If this is a new thread, add it to GDB's thread list. |
1830 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1831 | |
1832 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1833 | { | |
1834 | /* We're seeing an event on a thread id we knew had exited. | |
1835 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1836 | remote_add_thread (currthread, running); |
82f73884 PA |
1837 | return; |
1838 | } | |
1839 | ||
79d7f229 | 1840 | if (!in_thread_list (currthread)) |
c0a2216e | 1841 | { |
1941c569 | 1842 | struct inferior *inf = NULL; |
bad34192 | 1843 | int pid = ptid_get_pid (currthread); |
1941c569 | 1844 | |
bad34192 PA |
1845 | if (ptid_is_pid (inferior_ptid) |
1846 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1847 | { |
1848 | /* inferior_ptid has no thread member yet. This can happen | |
1849 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1850 | stub doesn't support qC. This is the first stop reported | |
1851 | after an attach, so this is the main thread. Update the | |
1852 | ptid in the thread list. */ | |
bad34192 PA |
1853 | if (in_thread_list (pid_to_ptid (pid))) |
1854 | thread_change_ptid (inferior_ptid, currthread); | |
1855 | else | |
1856 | { | |
1857 | remote_add_thread (currthread, running); | |
1858 | inferior_ptid = currthread; | |
1859 | } | |
dc146f7c | 1860 | return; |
c0a2216e | 1861 | } |
82f73884 PA |
1862 | |
1863 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1864 | { |
1865 | /* inferior_ptid is not set yet. This can happen with the | |
1866 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1867 | doesn't support qC. This is the first stop reported | |
1868 | after an attach, so this is the main thread. Update the | |
1869 | ptid in the thread list. */ | |
dc146f7c | 1870 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1871 | return; |
c0a2216e | 1872 | } |
82f73884 | 1873 | |
29c87f7f PA |
1874 | /* When connecting to a target remote, or to a target |
1875 | extended-remote which already was debugging an inferior, we | |
1876 | may not know about it yet. Add it before adding its child | |
1877 | thread, so notifications are emitted in a sensible order. */ | |
1878 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1879 | { |
1880 | struct remote_state *rs = get_remote_state (); | |
1881 | int fake_pid_p = !remote_multi_process_p (rs); | |
1882 | ||
1883 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1884 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1885 | } |
29c87f7f | 1886 | |
82f73884 | 1887 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1888 | remote_add_thread (currthread, running); |
1889 | ||
1890 | /* If we found a new inferior, let the common code do whatever | |
1891 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1892 | breakpoints), unless we're just setting up an all-stop |
1893 | connection. */ | |
1941c569 | 1894 | if (inf != NULL) |
b7ea362b PA |
1895 | { |
1896 | struct remote_state *rs = get_remote_state (); | |
1897 | ||
6efcd9a8 | 1898 | if (!rs->starting_up) |
b7ea362b PA |
1899 | notice_new_inferior (currthread, running, 0); |
1900 | } | |
c0a2216e | 1901 | } |
c906108c SS |
1902 | } |
1903 | ||
dc146f7c VP |
1904 | /* Return the private thread data, creating it if necessary. */ |
1905 | ||
70221824 | 1906 | static struct private_thread_info * |
dc146f7c VP |
1907 | demand_private_info (ptid_t ptid) |
1908 | { | |
1909 | struct thread_info *info = find_thread_ptid (ptid); | |
1910 | ||
1911 | gdb_assert (info); | |
1912 | ||
fe978cb0 | 1913 | if (!info->priv) |
dc146f7c | 1914 | { |
8d749320 | 1915 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1916 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1917 | info->priv->core = -1; |
1918 | info->priv->extra = 0; | |
dc146f7c VP |
1919 | } |
1920 | ||
fe978cb0 | 1921 | return info->priv; |
dc146f7c VP |
1922 | } |
1923 | ||
74531fed PA |
1924 | /* Call this function as a result of |
1925 | 1) A halt indication (T packet) containing a thread id | |
1926 | 2) A direct query of currthread | |
0df8b418 | 1927 | 3) Successful execution of set thread */ |
74531fed PA |
1928 | |
1929 | static void | |
47f8a51d | 1930 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1931 | { |
47f8a51d | 1932 | rs->general_thread = currthread; |
74531fed PA |
1933 | } |
1934 | ||
89be2091 DJ |
1935 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1936 | it can simply pass through to the inferior without reporting. */ | |
1937 | ||
1938 | static void | |
94bedb42 TT |
1939 | remote_pass_signals (struct target_ops *self, |
1940 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1941 | { |
4082afcc | 1942 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1943 | { |
1944 | char *pass_packet, *p; | |
89be2091 | 1945 | int count = 0, i; |
747dc59d | 1946 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1947 | |
1948 | gdb_assert (numsigs < 256); | |
1949 | for (i = 0; i < numsigs; i++) | |
1950 | { | |
2455069d | 1951 | if (pass_signals[i]) |
89be2091 DJ |
1952 | count++; |
1953 | } | |
224c3ddb | 1954 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1955 | strcpy (pass_packet, "QPassSignals:"); |
1956 | p = pass_packet + strlen (pass_packet); | |
1957 | for (i = 0; i < numsigs; i++) | |
1958 | { | |
2455069d | 1959 | if (pass_signals[i]) |
89be2091 DJ |
1960 | { |
1961 | if (i >= 16) | |
1962 | *p++ = tohex (i >> 4); | |
1963 | *p++ = tohex (i & 15); | |
1964 | if (count) | |
1965 | *p++ = ';'; | |
1966 | else | |
1967 | break; | |
1968 | count--; | |
1969 | } | |
1970 | } | |
1971 | *p = 0; | |
747dc59d | 1972 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1973 | { |
89be2091 DJ |
1974 | putpkt (pass_packet); |
1975 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1976 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1977 | if (rs->last_pass_packet) |
1978 | xfree (rs->last_pass_packet); | |
1979 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1980 | } |
1981 | else | |
1982 | xfree (pass_packet); | |
1983 | } | |
1984 | } | |
1985 | ||
9b224c5e PA |
1986 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1987 | signals it should pass through to the inferior when detaching. */ | |
1988 | ||
1989 | static void | |
daf5e9b6 TT |
1990 | remote_program_signals (struct target_ops *self, |
1991 | int numsigs, unsigned char *signals) | |
9b224c5e | 1992 | { |
4082afcc | 1993 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1994 | { |
1995 | char *packet, *p; | |
1996 | int count = 0, i; | |
5e4a05c4 | 1997 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1998 | |
1999 | gdb_assert (numsigs < 256); | |
2000 | for (i = 0; i < numsigs; i++) | |
2001 | { | |
2002 | if (signals[i]) | |
2003 | count++; | |
2004 | } | |
224c3ddb | 2005 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2006 | strcpy (packet, "QProgramSignals:"); |
2007 | p = packet + strlen (packet); | |
2008 | for (i = 0; i < numsigs; i++) | |
2009 | { | |
2010 | if (signal_pass_state (i)) | |
2011 | { | |
2012 | if (i >= 16) | |
2013 | *p++ = tohex (i >> 4); | |
2014 | *p++ = tohex (i & 15); | |
2015 | if (count) | |
2016 | *p++ = ';'; | |
2017 | else | |
2018 | break; | |
2019 | count--; | |
2020 | } | |
2021 | } | |
2022 | *p = 0; | |
5e4a05c4 TT |
2023 | if (!rs->last_program_signals_packet |
2024 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2025 | { |
9b224c5e PA |
2026 | putpkt (packet); |
2027 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2028 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2029 | xfree (rs->last_program_signals_packet); |
2030 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2031 | } |
2032 | else | |
2033 | xfree (packet); | |
2034 | } | |
2035 | } | |
2036 | ||
79d7f229 PA |
2037 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2038 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2039 | thread. If GEN is set, set the general thread, if not, then set | |
2040 | the step/continue thread. */ | |
c906108c | 2041 | static void |
79d7f229 | 2042 | set_thread (struct ptid ptid, int gen) |
c906108c | 2043 | { |
d01949b6 | 2044 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2045 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2046 | char *buf = rs->buf; |
79d7f229 | 2047 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2048 | |
79d7f229 | 2049 | if (ptid_equal (state, ptid)) |
c906108c SS |
2050 | return; |
2051 | ||
79d7f229 PA |
2052 | *buf++ = 'H'; |
2053 | *buf++ = gen ? 'g' : 'c'; | |
2054 | if (ptid_equal (ptid, magic_null_ptid)) | |
2055 | xsnprintf (buf, endbuf - buf, "0"); | |
2056 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2057 | xsnprintf (buf, endbuf - buf, "0"); | |
2058 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2059 | xsnprintf (buf, endbuf - buf, "-1"); | |
2060 | else | |
82f73884 | 2061 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2062 | putpkt (rs->buf); |
6d820c5c | 2063 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2064 | if (gen) |
47f8a51d | 2065 | rs->general_thread = ptid; |
c906108c | 2066 | else |
47f8a51d | 2067 | rs->continue_thread = ptid; |
c906108c | 2068 | } |
79d7f229 PA |
2069 | |
2070 | static void | |
2071 | set_general_thread (struct ptid ptid) | |
2072 | { | |
2073 | set_thread (ptid, 1); | |
2074 | } | |
2075 | ||
2076 | static void | |
2077 | set_continue_thread (struct ptid ptid) | |
2078 | { | |
2079 | set_thread (ptid, 0); | |
2080 | } | |
2081 | ||
3c9c4b83 PA |
2082 | /* Change the remote current process. Which thread within the process |
2083 | ends up selected isn't important, as long as it is the same process | |
2084 | as what INFERIOR_PTID points to. | |
2085 | ||
2086 | This comes from that fact that there is no explicit notion of | |
2087 | "selected process" in the protocol. The selected process for | |
2088 | general operations is the process the selected general thread | |
2089 | belongs to. */ | |
2090 | ||
2091 | static void | |
2092 | set_general_process (void) | |
2093 | { | |
2094 | struct remote_state *rs = get_remote_state (); | |
2095 | ||
2096 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 2097 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
2098 | return; |
2099 | ||
2100 | /* We only need to change the remote current thread if it's pointing | |
2101 | at some other process. */ | |
47f8a51d | 2102 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2103 | set_general_thread (inferior_ptid); |
2104 | } | |
2105 | ||
c906108c | 2106 | \f |
7d1a114c PA |
2107 | /* Return nonzero if this is the main thread that we made up ourselves |
2108 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2109 | |
2110 | static int | |
7d1a114c | 2111 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2112 | { |
6d820c5c | 2113 | struct remote_state *rs = get_remote_state (); |
82f73884 | 2114 | char *p, *endp; |
c906108c | 2115 | |
c0a2216e PA |
2116 | if (ptid_equal (ptid, magic_null_ptid)) |
2117 | /* The main thread is always alive. */ | |
2118 | return 1; | |
2119 | ||
ba348170 | 2120 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2121 | /* The main thread is always alive. This can happen after a |
2122 | vAttach, if the remote side doesn't support | |
2123 | multi-threading. */ | |
2124 | return 1; | |
2125 | ||
7d1a114c PA |
2126 | return 0; |
2127 | } | |
2128 | ||
2129 | /* Return nonzero if the thread PTID is still alive on the remote | |
2130 | system. */ | |
2131 | ||
2132 | static int | |
2133 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2134 | { | |
2135 | struct remote_state *rs = get_remote_state (); | |
2136 | char *p, *endp; | |
2137 | ||
2138 | /* Check if this is a thread that we made up ourselves to model | |
2139 | non-threaded targets as single-threaded. */ | |
2140 | if (remote_thread_always_alive (ops, ptid)) | |
2141 | return 1; | |
2142 | ||
82f73884 PA |
2143 | p = rs->buf; |
2144 | endp = rs->buf + get_remote_packet_size (); | |
2145 | ||
2146 | *p++ = 'T'; | |
2147 | write_ptid (p, endp, ptid); | |
2148 | ||
2e9f7625 | 2149 | putpkt (rs->buf); |
6d820c5c | 2150 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2151 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2152 | } |
2153 | ||
79efa585 SM |
2154 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2155 | The thread_info object owns the memory for the name. */ | |
2156 | ||
2157 | static const char * | |
2158 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2159 | { | |
2160 | if (info->priv != NULL) | |
2161 | return info->priv->name; | |
2162 | ||
2163 | return NULL; | |
2164 | } | |
2165 | ||
c906108c SS |
2166 | /* About these extended threadlist and threadinfo packets. They are |
2167 | variable length packets but, the fields within them are often fixed | |
2168 | length. They are redundent enough to send over UDP as is the | |
2169 | remote protocol in general. There is a matching unit test module | |
2170 | in libstub. */ | |
2171 | ||
23860348 | 2172 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2173 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2174 | changable. */ |
cce74817 JM |
2175 | |
2176 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2177 | Plan to fix this. */ |
cce74817 | 2178 | |
23860348 | 2179 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2180 | |
9d1f7ab2 | 2181 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2182 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2183 | |
2184 | struct gdb_ext_thread_info | |
c5aa993b | 2185 | { |
23860348 | 2186 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2187 | int active; /* Has state interesting to GDB? |
23860348 | 2188 | regs, stack. */ |
2bc416ba | 2189 | char display[256]; /* Brief state display, name, |
cedea757 | 2190 | blocked/suspended. */ |
23860348 | 2191 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2192 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2193 | whatever. */ |
c5aa993b | 2194 | }; |
cce74817 JM |
2195 | |
2196 | /* The volume of remote transfers can be limited by submitting | |
2197 | a mask containing bits specifying the desired information. | |
2198 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2199 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2200 | |
2201 | #define TAG_THREADID 1 | |
2202 | #define TAG_EXISTS 2 | |
2203 | #define TAG_DISPLAY 4 | |
2204 | #define TAG_THREADNAME 8 | |
c5aa993b | 2205 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2206 | |
23860348 | 2207 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2208 | |
a14ed312 | 2209 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2210 | |
a14ed312 | 2211 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2212 | |
a14ed312 | 2213 | static char *pack_int (char *buf, int value); |
cce74817 | 2214 | |
a14ed312 | 2215 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2216 | |
a14ed312 | 2217 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2218 | |
23860348 | 2219 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2220 | |
23860348 | 2221 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2222 | |
23860348 | 2223 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2224 | |
23860348 | 2225 | static int threadref_to_int (threadref *ref); |
cce74817 | 2226 | |
23860348 | 2227 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2228 | |
23860348 | 2229 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2230 | |
2bc416ba | 2231 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2232 | threadref *id); |
cce74817 | 2233 | |
a14ed312 | 2234 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2235 | threadref *expectedref, |
a14ed312 KB |
2236 | struct gdb_ext_thread_info |
2237 | *info); | |
cce74817 JM |
2238 | |
2239 | ||
2bc416ba | 2240 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2241 | int fieldset, /*TAG mask */ |
a14ed312 | 2242 | struct gdb_ext_thread_info *info); |
cce74817 | 2243 | |
a14ed312 KB |
2244 | static char *pack_threadlist_request (char *pkt, int startflag, |
2245 | int threadcount, | |
23860348 | 2246 | threadref *nextthread); |
cce74817 | 2247 | |
a14ed312 KB |
2248 | static int parse_threadlist_response (char *pkt, |
2249 | int result_limit, | |
23860348 | 2250 | threadref *original_echo, |
2bc416ba | 2251 | threadref *resultlist, |
23860348 | 2252 | int *doneflag); |
cce74817 | 2253 | |
a14ed312 | 2254 | static int remote_get_threadlist (int startflag, |
23860348 | 2255 | threadref *nextthread, |
a14ed312 KB |
2256 | int result_limit, |
2257 | int *done, | |
2bc416ba | 2258 | int *result_count, |
23860348 | 2259 | threadref *threadlist); |
cce74817 | 2260 | |
23860348 | 2261 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2262 | |
a14ed312 KB |
2263 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2264 | void *context, int looplimit); | |
cce74817 | 2265 | |
23860348 | 2266 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2267 | |
82f73884 PA |
2268 | |
2269 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2270 | buffer we're allowed to write to. Returns | |
2271 | BUF+CHARACTERS_WRITTEN. */ | |
2272 | ||
2273 | static char * | |
2274 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2275 | { | |
2276 | int pid, tid; | |
2277 | struct remote_state *rs = get_remote_state (); | |
2278 | ||
2279 | if (remote_multi_process_p (rs)) | |
2280 | { | |
2281 | pid = ptid_get_pid (ptid); | |
2282 | if (pid < 0) | |
2283 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2284 | else | |
2285 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2286 | } | |
ba348170 | 2287 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2288 | if (tid < 0) |
2289 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2290 | else | |
2291 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2292 | ||
2293 | return buf; | |
2294 | } | |
2295 | ||
2296 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2297 | passed the last parsed char. Returns null_ptid on error. */ | |
2298 | ||
2299 | static ptid_t | |
2300 | read_ptid (char *buf, char **obuf) | |
2301 | { | |
2302 | char *p = buf; | |
2303 | char *pp; | |
2304 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2305 | |
2306 | if (*p == 'p') | |
2307 | { | |
2308 | /* Multi-process ptid. */ | |
2309 | pp = unpack_varlen_hex (p + 1, &pid); | |
2310 | if (*pp != '.') | |
b37520b6 | 2311 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2312 | |
2313 | p = pp; | |
2314 | pp = unpack_varlen_hex (p + 1, &tid); | |
2315 | if (obuf) | |
2316 | *obuf = pp; | |
ba348170 | 2317 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2318 | } |
2319 | ||
2320 | /* No multi-process. Just a tid. */ | |
2321 | pp = unpack_varlen_hex (p, &tid); | |
2322 | ||
c9f35b34 KB |
2323 | /* Return null_ptid when no thread id is found. */ |
2324 | if (p == pp) | |
2325 | { | |
2326 | if (obuf) | |
2327 | *obuf = pp; | |
2328 | return null_ptid; | |
2329 | } | |
2330 | ||
82f73884 | 2331 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2332 | what's in inferior_ptid, unless it's null at this point. If so, |
2333 | then since there's no way to know the pid of the reported | |
2334 | threads, use the magic number. */ | |
2335 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2336 | pid = ptid_get_pid (magic_null_ptid); | |
2337 | else | |
2338 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2339 | |
2340 | if (obuf) | |
2341 | *obuf = pp; | |
ba348170 | 2342 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2343 | } |
2344 | ||
c906108c | 2345 | static int |
fba45db2 | 2346 | stubhex (int ch) |
c906108c SS |
2347 | { |
2348 | if (ch >= 'a' && ch <= 'f') | |
2349 | return ch - 'a' + 10; | |
2350 | if (ch >= '0' && ch <= '9') | |
2351 | return ch - '0'; | |
2352 | if (ch >= 'A' && ch <= 'F') | |
2353 | return ch - 'A' + 10; | |
2354 | return -1; | |
2355 | } | |
2356 | ||
2357 | static int | |
fba45db2 | 2358 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2359 | { |
2360 | int nibble; | |
2361 | int retval = 0; | |
2362 | ||
2363 | while (fieldlength) | |
2364 | { | |
2365 | nibble = stubhex (*buff++); | |
2366 | retval |= nibble; | |
2367 | fieldlength--; | |
2368 | if (fieldlength) | |
2369 | retval = retval << 4; | |
2370 | } | |
2371 | return retval; | |
2372 | } | |
2373 | ||
c906108c | 2374 | static char * |
fba45db2 | 2375 | unpack_nibble (char *buf, int *val) |
c906108c | 2376 | { |
b7589f7d | 2377 | *val = fromhex (*buf++); |
c906108c SS |
2378 | return buf; |
2379 | } | |
2380 | ||
c906108c | 2381 | static char * |
fba45db2 | 2382 | unpack_byte (char *buf, int *value) |
c906108c SS |
2383 | { |
2384 | *value = stub_unpack_int (buf, 2); | |
2385 | return buf + 2; | |
2386 | } | |
2387 | ||
2388 | static char * | |
fba45db2 | 2389 | pack_int (char *buf, int value) |
c906108c SS |
2390 | { |
2391 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2392 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2393 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2394 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2395 | return buf; | |
2396 | } | |
2397 | ||
2398 | static char * | |
fba45db2 | 2399 | unpack_int (char *buf, int *value) |
c906108c SS |
2400 | { |
2401 | *value = stub_unpack_int (buf, 8); | |
2402 | return buf + 8; | |
2403 | } | |
2404 | ||
23860348 | 2405 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2406 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2407 | |
2408 | static char * | |
fba45db2 | 2409 | pack_string (char *pkt, char *string) |
c906108c SS |
2410 | { |
2411 | char ch; | |
2412 | int len; | |
2413 | ||
2414 | len = strlen (string); | |
2415 | if (len > 200) | |
23860348 | 2416 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2417 | pkt = pack_hex_byte (pkt, len); |
2418 | while (len-- > 0) | |
2419 | { | |
2420 | ch = *string++; | |
2421 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2422 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2423 | *pkt++ = ch; |
2424 | } | |
2425 | return pkt; | |
2426 | } | |
2427 | #endif /* 0 (unused) */ | |
2428 | ||
2429 | static char * | |
fba45db2 | 2430 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2431 | { |
2432 | while (length--) | |
2433 | *dest++ = *src++; | |
2434 | *dest = '\0'; | |
2435 | return src; | |
2436 | } | |
2437 | ||
2438 | static char * | |
fba45db2 | 2439 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2440 | { |
2441 | char *limit; | |
2442 | unsigned char *altid; | |
2443 | ||
2444 | altid = (unsigned char *) id; | |
2445 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2446 | while (pkt < limit) | |
2447 | pkt = pack_hex_byte (pkt, *altid++); | |
2448 | return pkt; | |
2449 | } | |
2450 | ||
2451 | ||
2452 | static char * | |
fba45db2 | 2453 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2454 | { |
2455 | char *altref; | |
2456 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2457 | int x, y; | |
2458 | ||
2459 | altref = (char *) id; | |
2460 | ||
2461 | while (inbuf < limit) | |
2462 | { | |
2463 | x = stubhex (*inbuf++); | |
2464 | y = stubhex (*inbuf++); | |
2465 | *altref++ = (x << 4) | y; | |
2466 | } | |
2467 | return inbuf; | |
2468 | } | |
2469 | ||
2470 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2471 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2472 | to use 64bit thread references internally. This is an adapter |
2473 | function. */ | |
2474 | ||
2475 | void | |
fba45db2 | 2476 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2477 | { |
2478 | unsigned char *scan; | |
2479 | ||
2480 | scan = (unsigned char *) id; | |
2481 | { | |
2482 | int i = 4; | |
2483 | while (i--) | |
2484 | *scan++ = 0; | |
2485 | } | |
2486 | *scan++ = (value >> 24) & 0xff; | |
2487 | *scan++ = (value >> 16) & 0xff; | |
2488 | *scan++ = (value >> 8) & 0xff; | |
2489 | *scan++ = (value & 0xff); | |
2490 | } | |
2491 | ||
2492 | static int | |
fba45db2 | 2493 | threadref_to_int (threadref *ref) |
c906108c SS |
2494 | { |
2495 | int i, value = 0; | |
2496 | unsigned char *scan; | |
2497 | ||
cfd77fa1 | 2498 | scan = *ref; |
c906108c SS |
2499 | scan += 4; |
2500 | i = 4; | |
2501 | while (i-- > 0) | |
2502 | value = (value << 8) | ((*scan++) & 0xff); | |
2503 | return value; | |
2504 | } | |
2505 | ||
2506 | static void | |
fba45db2 | 2507 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2508 | { |
2509 | int i; | |
2510 | unsigned char *csrc, *cdest; | |
2511 | ||
2512 | csrc = (unsigned char *) src; | |
2513 | cdest = (unsigned char *) dest; | |
2514 | i = 8; | |
2515 | while (i--) | |
2516 | *cdest++ = *csrc++; | |
2517 | } | |
2518 | ||
2519 | static int | |
fba45db2 | 2520 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2521 | { |
23860348 | 2522 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2523 | #if 0 |
2524 | unsigned char *srcp, *destp; | |
2525 | int i, result; | |
2526 | srcp = (char *) src; | |
2527 | destp = (char *) dest; | |
2528 | ||
2529 | result = 1; | |
2530 | while (i-- > 0) | |
2531 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2532 | return result; | |
2533 | #endif | |
2534 | return 1; | |
2535 | } | |
2536 | ||
2537 | /* | |
c5aa993b JM |
2538 | threadid:1, # always request threadid |
2539 | context_exists:2, | |
2540 | display:4, | |
2541 | unique_name:8, | |
2542 | more_display:16 | |
2543 | */ | |
c906108c SS |
2544 | |
2545 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2546 | ||
2547 | static char * | |
fba45db2 | 2548 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2549 | { |
23860348 MS |
2550 | *pkt++ = 'q'; /* Info Query */ |
2551 | *pkt++ = 'P'; /* process or thread info */ | |
2552 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2553 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2554 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2555 | return pkt; |
2556 | } | |
2557 | ||
23860348 | 2558 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2559 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2560 | add more fields as time goes by. */ |
c906108c | 2561 | |
23860348 | 2562 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2563 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2564 | fetch registers and its stack? */ |
c5aa993b | 2565 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2566 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2567 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2568 | the process. */ |
c906108c SS |
2569 | |
2570 | static int | |
fba45db2 KB |
2571 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2572 | struct gdb_ext_thread_info *info) | |
c906108c | 2573 | { |
d01949b6 | 2574 | struct remote_state *rs = get_remote_state (); |
c906108c | 2575 | int mask, length; |
cfd77fa1 | 2576 | int tag; |
c906108c | 2577 | threadref ref; |
6d820c5c | 2578 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2579 | int retval = 1; |
2580 | ||
23860348 | 2581 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2582 | info->active = 0; |
2583 | info->display[0] = '\0'; | |
2584 | info->shortname[0] = '\0'; | |
2585 | info->more_display[0] = '\0'; | |
2586 | ||
23860348 MS |
2587 | /* Assume the characters indicating the packet type have been |
2588 | stripped. */ | |
c906108c SS |
2589 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2590 | pkt = unpack_threadid (pkt, &ref); | |
2591 | ||
2592 | if (mask == 0) | |
8a3fe4f8 | 2593 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2594 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2595 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2596 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2597 | return 0; |
2598 | } | |
2599 | copy_threadref (&info->threadid, &ref); | |
2600 | ||
23860348 | 2601 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2602 | |
23860348 MS |
2603 | /* Packets are terminated with nulls. */ |
2604 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2605 | { |
2606 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2607 | pkt = unpack_byte (pkt, &length); /* length */ |
2608 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2609 | { |
8a3fe4f8 | 2610 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2611 | retval = 0; |
2612 | break; | |
2613 | } | |
2614 | if (tag == TAG_THREADID) | |
2615 | { | |
2616 | if (length != 16) | |
2617 | { | |
8a3fe4f8 | 2618 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2619 | retval = 0; |
2620 | break; | |
2621 | } | |
2622 | pkt = unpack_threadid (pkt, &ref); | |
2623 | mask = mask & ~TAG_THREADID; | |
2624 | continue; | |
2625 | } | |
2626 | if (tag == TAG_EXISTS) | |
2627 | { | |
2628 | info->active = stub_unpack_int (pkt, length); | |
2629 | pkt += length; | |
2630 | mask = mask & ~(TAG_EXISTS); | |
2631 | if (length > 8) | |
2632 | { | |
8a3fe4f8 | 2633 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2634 | retval = 0; |
2635 | break; | |
2636 | } | |
2637 | continue; | |
2638 | } | |
2639 | if (tag == TAG_THREADNAME) | |
2640 | { | |
2641 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2642 | mask = mask & ~TAG_THREADNAME; | |
2643 | continue; | |
2644 | } | |
2645 | if (tag == TAG_DISPLAY) | |
2646 | { | |
2647 | pkt = unpack_string (pkt, &info->display[0], length); | |
2648 | mask = mask & ~TAG_DISPLAY; | |
2649 | continue; | |
2650 | } | |
2651 | if (tag == TAG_MOREDISPLAY) | |
2652 | { | |
2653 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2654 | mask = mask & ~TAG_MOREDISPLAY; | |
2655 | continue; | |
2656 | } | |
8a3fe4f8 | 2657 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2658 | break; /* Not a tag we know about. */ |
c906108c SS |
2659 | } |
2660 | return retval; | |
2661 | } | |
2662 | ||
2663 | static int | |
fba45db2 KB |
2664 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2665 | struct gdb_ext_thread_info *info) | |
c906108c | 2666 | { |
d01949b6 | 2667 | struct remote_state *rs = get_remote_state (); |
c906108c | 2668 | int result; |
c906108c | 2669 | |
2e9f7625 DJ |
2670 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2671 | putpkt (rs->buf); | |
6d820c5c | 2672 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2673 | |
2674 | if (rs->buf[0] == '\0') | |
2675 | return 0; | |
2676 | ||
2e9f7625 | 2677 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2678 | threadid, info); |
c906108c SS |
2679 | return result; |
2680 | } | |
2681 | ||
c906108c SS |
2682 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2683 | ||
2684 | static char * | |
fba45db2 KB |
2685 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2686 | threadref *nextthread) | |
c906108c SS |
2687 | { |
2688 | *pkt++ = 'q'; /* info query packet */ | |
2689 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2690 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2691 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2692 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2693 | *pkt = '\0'; | |
2694 | return pkt; | |
2695 | } | |
2696 | ||
2697 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2698 | ||
2699 | static int | |
fba45db2 KB |
2700 | parse_threadlist_response (char *pkt, int result_limit, |
2701 | threadref *original_echo, threadref *resultlist, | |
2702 | int *doneflag) | |
c906108c | 2703 | { |
d01949b6 | 2704 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2705 | char *limit; |
2706 | int count, resultcount, done; | |
2707 | ||
2708 | resultcount = 0; | |
2709 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2710 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2711 | /* done parse past here */ |
c906108c SS |
2712 | pkt = unpack_byte (pkt, &count); /* count field */ |
2713 | pkt = unpack_nibble (pkt, &done); | |
2714 | /* The first threadid is the argument threadid. */ | |
2715 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2716 | while ((count-- > 0) && (pkt < limit)) | |
2717 | { | |
2718 | pkt = unpack_threadid (pkt, resultlist++); | |
2719 | if (resultcount++ >= result_limit) | |
2720 | break; | |
2721 | } | |
2722 | if (doneflag) | |
2723 | *doneflag = done; | |
2724 | return resultcount; | |
2725 | } | |
2726 | ||
6dc54d91 PA |
2727 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2728 | qL packet is not supported, 0 on error and 1 on success. */ | |
2729 | ||
c906108c | 2730 | static int |
fba45db2 KB |
2731 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2732 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2733 | { |
d01949b6 | 2734 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2735 | int result = 1; |
2736 | ||
23860348 | 2737 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2738 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2739 | >= get_remote_packet_size ()) | |
ea9c271d | 2740 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2741 | |
6d820c5c DJ |
2742 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2743 | putpkt (rs->buf); | |
2744 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2745 | if (*rs->buf == '\0') |
6dc54d91 PA |
2746 | { |
2747 | /* Packet not supported. */ | |
2748 | return -1; | |
2749 | } | |
2750 | ||
2751 | *result_count = | |
2752 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2753 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2754 | |
0d031856 | 2755 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2756 | { |
23860348 MS |
2757 | /* FIXME: This is a good reason to drop the packet. */ |
2758 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2759 | /* Possabilities : |
2760 | retransmit immediatly - race conditions | |
2761 | retransmit after timeout - yes | |
2762 | exit | |
2763 | wait for packet, then exit | |
2764 | */ | |
8a3fe4f8 | 2765 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2766 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2767 | } |
2768 | if (*result_count <= 0) | |
2769 | { | |
2770 | if (*done != 1) | |
2771 | { | |
8a3fe4f8 | 2772 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2773 | result = 0; |
2774 | } | |
2775 | return result; /* break; */ | |
2776 | } | |
2777 | if (*result_count > result_limit) | |
2778 | { | |
2779 | *result_count = 0; | |
8a3fe4f8 | 2780 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2781 | return 0; |
2782 | } | |
2783 | return result; | |
2784 | } | |
2785 | ||
6dc54d91 PA |
2786 | /* Fetch the list of remote threads, with the qL packet, and call |
2787 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2788 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2789 | STEPFUNCTION returns false. If the packet is not supported, | |
2790 | returns -1. */ | |
c906108c | 2791 | |
c906108c | 2792 | static int |
fba45db2 KB |
2793 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2794 | int looplimit) | |
c906108c | 2795 | { |
0d031856 | 2796 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2797 | int done, i, result_count; |
2798 | int startflag = 1; | |
2799 | int result = 1; | |
2800 | int loopcount = 0; | |
c906108c SS |
2801 | |
2802 | done = 0; | |
2803 | while (!done) | |
2804 | { | |
2805 | if (loopcount++ > looplimit) | |
2806 | { | |
2807 | result = 0; | |
8a3fe4f8 | 2808 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2809 | break; |
2810 | } | |
6dc54d91 PA |
2811 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2812 | MAXTHREADLISTRESULTS, | |
2813 | &done, &result_count, | |
2814 | rs->resultthreadlist); | |
2815 | if (result <= 0) | |
2816 | break; | |
23860348 | 2817 | /* Clear for later iterations. */ |
c906108c SS |
2818 | startflag = 0; |
2819 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2820 | if (result_count >= 1) | |
0d031856 TT |
2821 | copy_threadref (&rs->nextthread, |
2822 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2823 | i = 0; |
2824 | while (result_count--) | |
6dc54d91 PA |
2825 | { |
2826 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2827 | { | |
2828 | result = 0; | |
2829 | break; | |
2830 | } | |
2831 | } | |
c906108c SS |
2832 | } |
2833 | return result; | |
2834 | } | |
2835 | ||
6dc54d91 PA |
2836 | /* A thread found on the remote target. */ |
2837 | ||
2838 | typedef struct thread_item | |
2839 | { | |
2840 | /* The thread's PTID. */ | |
2841 | ptid_t ptid; | |
2842 | ||
2843 | /* The thread's extra info. May be NULL. */ | |
2844 | char *extra; | |
2845 | ||
79efa585 SM |
2846 | /* The thread's name. May be NULL. */ |
2847 | char *name; | |
2848 | ||
6dc54d91 PA |
2849 | /* The core the thread was running on. -1 if not known. */ |
2850 | int core; | |
2851 | } thread_item_t; | |
2852 | DEF_VEC_O(thread_item_t); | |
2853 | ||
2854 | /* Context passed around to the various methods listing remote | |
2855 | threads. As new threads are found, they're added to the ITEMS | |
2856 | vector. */ | |
2857 | ||
2858 | struct threads_listing_context | |
2859 | { | |
2860 | /* The threads found on the remote target. */ | |
2861 | VEC (thread_item_t) *items; | |
2862 | }; | |
2863 | ||
80134cf5 PA |
2864 | /* Discard the contents of the constructed thread listing context. */ |
2865 | ||
2866 | static void | |
2867 | clear_threads_listing_context (void *p) | |
2868 | { | |
19ba03f4 SM |
2869 | struct threads_listing_context *context |
2870 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
2871 | int i; |
2872 | struct thread_item *item; | |
2873 | ||
2874 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
2875 | { |
2876 | xfree (item->extra); | |
2877 | xfree (item->name); | |
2878 | } | |
80134cf5 PA |
2879 | |
2880 | VEC_free (thread_item_t, context->items); | |
2881 | } | |
2882 | ||
cbb8991c DB |
2883 | /* Remove the thread specified as the related_pid field of WS |
2884 | from the CONTEXT list. */ | |
2885 | ||
2886 | static void | |
2887 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2888 | struct threads_listing_context *context) | |
2889 | { | |
2890 | struct thread_item *item; | |
2891 | int i; | |
2892 | ptid_t child_ptid = ws->value.related_pid; | |
2893 | ||
2894 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2895 | { | |
2896 | if (ptid_equal (item->ptid, child_ptid)) | |
2897 | { | |
2898 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2899 | break; | |
2900 | } | |
2901 | } | |
2902 | } | |
2903 | ||
c906108c | 2904 | static int |
6dc54d91 | 2905 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2906 | { |
19ba03f4 SM |
2907 | struct threads_listing_context *context |
2908 | = (struct threads_listing_context *) data; | |
6dc54d91 | 2909 | struct thread_item item; |
79d7f229 | 2910 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2911 | |
6dc54d91 PA |
2912 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2913 | item.core = -1; | |
2914 | item.extra = NULL; | |
2915 | ||
2916 | VEC_safe_push (thread_item_t, context->items, &item); | |
2917 | ||
c906108c SS |
2918 | return 1; /* continue iterator */ |
2919 | } | |
2920 | ||
2921 | #define CRAZY_MAX_THREADS 1000 | |
2922 | ||
39f77062 KB |
2923 | static ptid_t |
2924 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2925 | { |
d01949b6 | 2926 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2927 | |
2928 | putpkt ("qC"); | |
6d820c5c | 2929 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2930 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2931 | { |
2932 | char *obuf; | |
2933 | ptid_t result; | |
2934 | ||
2935 | result = read_ptid (&rs->buf[2], &obuf); | |
2936 | if (*obuf != '\0' && remote_debug) | |
2937 | fprintf_unfiltered (gdb_stdlog, | |
2938 | "warning: garbage in qC reply\n"); | |
2939 | ||
2940 | return result; | |
2941 | } | |
c906108c SS |
2942 | else |
2943 | return oldpid; | |
2944 | } | |
2945 | ||
6dc54d91 | 2946 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2947 | |
6dc54d91 PA |
2948 | static int |
2949 | remote_get_threads_with_ql (struct target_ops *ops, | |
2950 | struct threads_listing_context *context) | |
c906108c | 2951 | { |
6dc54d91 PA |
2952 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2953 | CRAZY_MAX_THREADS) >= 0) | |
2954 | return 1; | |
2955 | ||
2956 | return 0; | |
c906108c SS |
2957 | } |
2958 | ||
dc146f7c VP |
2959 | #if defined(HAVE_LIBEXPAT) |
2960 | ||
dc146f7c VP |
2961 | static void |
2962 | start_thread (struct gdb_xml_parser *parser, | |
2963 | const struct gdb_xml_element *element, | |
2964 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2965 | { | |
19ba03f4 SM |
2966 | struct threads_listing_context *data |
2967 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
2968 | |
2969 | struct thread_item item; | |
2970 | char *id; | |
3d2c1d41 | 2971 | struct gdb_xml_value *attr; |
dc146f7c | 2972 | |
19ba03f4 | 2973 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2974 | item.ptid = read_ptid (id, NULL); |
2975 | ||
3d2c1d41 PA |
2976 | attr = xml_find_attribute (attributes, "core"); |
2977 | if (attr != NULL) | |
2978 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2979 | else |
2980 | item.core = -1; | |
2981 | ||
79efa585 | 2982 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 2983 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 2984 | |
dc146f7c VP |
2985 | item.extra = 0; |
2986 | ||
2987 | VEC_safe_push (thread_item_t, data->items, &item); | |
2988 | } | |
2989 | ||
2990 | static void | |
2991 | end_thread (struct gdb_xml_parser *parser, | |
2992 | const struct gdb_xml_element *element, | |
2993 | void *user_data, const char *body_text) | |
2994 | { | |
19ba03f4 SM |
2995 | struct threads_listing_context *data |
2996 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
2997 | |
2998 | if (body_text && *body_text) | |
2ae2a0b7 | 2999 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3000 | } |
3001 | ||
3002 | const struct gdb_xml_attribute thread_attributes[] = { | |
3003 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3004 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3005 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3006 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3007 | }; | |
3008 | ||
3009 | const struct gdb_xml_element thread_children[] = { | |
3010 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3011 | }; | |
3012 | ||
3013 | const struct gdb_xml_element threads_children[] = { | |
3014 | { "thread", thread_attributes, thread_children, | |
3015 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3016 | start_thread, end_thread }, | |
3017 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3018 | }; | |
3019 | ||
3020 | const struct gdb_xml_element threads_elements[] = { | |
3021 | { "threads", NULL, threads_children, | |
3022 | GDB_XML_EF_NONE, NULL, NULL }, | |
3023 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3024 | }; | |
3025 | ||
3026 | #endif | |
3027 | ||
6dc54d91 | 3028 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3029 | |
6dc54d91 PA |
3030 | static int |
3031 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3032 | struct threads_listing_context *context) | |
0f71a2f6 | 3033 | { |
dc146f7c | 3034 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3035 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3036 | { |
6dc54d91 | 3037 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3038 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3039 | |
6dc54d91 | 3040 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3041 | { |
6dc54d91 PA |
3042 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3043 | threads_elements, xml, context); | |
dc146f7c VP |
3044 | } |
3045 | ||
3046 | do_cleanups (back_to); | |
6dc54d91 | 3047 | return 1; |
dc146f7c VP |
3048 | } |
3049 | #endif | |
3050 | ||
6dc54d91 PA |
3051 | return 0; |
3052 | } | |
3053 | ||
3054 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3055 | ||
3056 | static int | |
3057 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3058 | struct threads_listing_context *context) | |
3059 | { | |
3060 | struct remote_state *rs = get_remote_state (); | |
3061 | ||
b80fafe3 | 3062 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3063 | { |
6dc54d91 PA |
3064 | char *bufp; |
3065 | ||
9d1f7ab2 | 3066 | putpkt ("qfThreadInfo"); |
6d820c5c | 3067 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3068 | bufp = rs->buf; |
9d1f7ab2 | 3069 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3070 | { |
9d1f7ab2 MS |
3071 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3072 | { | |
3073 | do | |
3074 | { | |
6dc54d91 PA |
3075 | struct thread_item item; |
3076 | ||
3077 | item.ptid = read_ptid (bufp, &bufp); | |
3078 | item.core = -1; | |
3079 | item.extra = NULL; | |
3080 | ||
3081 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3082 | } |
3083 | while (*bufp++ == ','); /* comma-separated list */ | |
3084 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3085 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3086 | bufp = rs->buf; |
9d1f7ab2 | 3087 | } |
6dc54d91 PA |
3088 | return 1; |
3089 | } | |
3090 | else | |
3091 | { | |
3092 | /* Packet not recognized. */ | |
3093 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3094 | } |
3095 | } | |
3096 | ||
6dc54d91 PA |
3097 | return 0; |
3098 | } | |
3099 | ||
e8032dde | 3100 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3101 | targets. */ |
3102 | ||
3103 | static void | |
e8032dde | 3104 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
3105 | { |
3106 | struct remote_state *rs = get_remote_state (); | |
3107 | struct threads_listing_context context; | |
3108 | struct cleanup *old_chain; | |
ab970af1 | 3109 | int got_list = 0; |
e8032dde | 3110 | |
6dc54d91 PA |
3111 | context.items = NULL; |
3112 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3113 | ||
3114 | /* We have a few different mechanisms to fetch the thread list. Try | |
3115 | them all, starting with the most preferred one first, falling | |
3116 | back to older methods. */ | |
3117 | if (remote_get_threads_with_qxfer (ops, &context) | |
3118 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3119 | || remote_get_threads_with_ql (ops, &context)) | |
3120 | { | |
3121 | int i; | |
3122 | struct thread_item *item; | |
ab970af1 PA |
3123 | struct thread_info *tp, *tmp; |
3124 | ||
3125 | got_list = 1; | |
3126 | ||
7d1a114c PA |
3127 | if (VEC_empty (thread_item_t, context.items) |
3128 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3129 | { | |
3130 | /* Some targets don't really support threads, but still | |
3131 | reply an (empty) thread list in response to the thread | |
3132 | listing packets, instead of replying "packet not | |
3133 | supported". Exit early so we don't delete the main | |
3134 | thread. */ | |
3135 | do_cleanups (old_chain); | |
3136 | return; | |
3137 | } | |
3138 | ||
ab970af1 PA |
3139 | /* CONTEXT now holds the current thread list on the remote |
3140 | target end. Delete GDB-side threads no longer found on the | |
3141 | target. */ | |
8a06aea7 | 3142 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3143 | { |
ab970af1 PA |
3144 | for (i = 0; |
3145 | VEC_iterate (thread_item_t, context.items, i, item); | |
3146 | ++i) | |
3147 | { | |
3148 | if (ptid_equal (item->ptid, tp->ptid)) | |
3149 | break; | |
3150 | } | |
3151 | ||
3152 | if (i == VEC_length (thread_item_t, context.items)) | |
3153 | { | |
3154 | /* Not found. */ | |
3155 | delete_thread (tp->ptid); | |
3156 | } | |
cbb8991c DB |
3157 | } |
3158 | ||
3159 | /* Remove any unreported fork child threads from CONTEXT so | |
3160 | that we don't interfere with follow fork, which is where | |
3161 | creation of such threads is handled. */ | |
3162 | remove_new_fork_children (&context); | |
74531fed | 3163 | |
ab970af1 | 3164 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3165 | for (i = 0; |
3166 | VEC_iterate (thread_item_t, context.items, i, item); | |
3167 | ++i) | |
3168 | { | |
3169 | if (!ptid_equal (item->ptid, null_ptid)) | |
3170 | { | |
3171 | struct private_thread_info *info; | |
3172 | /* In non-stop mode, we assume new found threads are | |
3173 | running until proven otherwise with a stop reply. In | |
3174 | all-stop, we can only get here if all threads are | |
3175 | stopped. */ | |
6efcd9a8 | 3176 | int running = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 PA |
3177 | |
3178 | remote_notice_new_inferior (item->ptid, running); | |
3179 | ||
3180 | info = demand_private_info (item->ptid); | |
3181 | info->core = item->core; | |
3182 | info->extra = item->extra; | |
3183 | item->extra = NULL; | |
79efa585 SM |
3184 | info->name = item->name; |
3185 | item->name = NULL; | |
6dc54d91 PA |
3186 | } |
3187 | } | |
3188 | } | |
3189 | ||
ab970af1 PA |
3190 | if (!got_list) |
3191 | { | |
3192 | /* If no thread listing method is supported, then query whether | |
3193 | each known thread is alive, one by one, with the T packet. | |
3194 | If the target doesn't support threads at all, then this is a | |
3195 | no-op. See remote_thread_alive. */ | |
3196 | prune_threads (); | |
3197 | } | |
3198 | ||
6dc54d91 | 3199 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3200 | } |
3201 | ||
802188a7 | 3202 | /* |
9d1f7ab2 MS |
3203 | * Collect a descriptive string about the given thread. |
3204 | * The target may say anything it wants to about the thread | |
3205 | * (typically info about its blocked / runnable state, name, etc.). | |
3206 | * This string will appear in the info threads display. | |
802188a7 | 3207 | * |
9d1f7ab2 MS |
3208 | * Optional: targets are not required to implement this function. |
3209 | */ | |
3210 | ||
3211 | static char * | |
c15906d8 | 3212 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3213 | { |
d01949b6 | 3214 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3215 | int result; |
3216 | int set; | |
3217 | threadref id; | |
3218 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3219 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3220 | int n = 0; /* position in display_buf */ |
3221 | ||
5d93a237 | 3222 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3223 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3224 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3225 | |
60e569b9 | 3226 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3227 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3228 | /* This is the main thread which was added by GDB. The remote |
3229 | server doesn't know about it. */ | |
3230 | return NULL; | |
3231 | ||
4082afcc | 3232 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3233 | { |
3234 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3235 | |
fe978cb0 PA |
3236 | if (info && info->priv) |
3237 | return info->priv->extra; | |
dc146f7c VP |
3238 | else |
3239 | return NULL; | |
3240 | } | |
3241 | ||
b80fafe3 | 3242 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3243 | { |
82f73884 PA |
3244 | char *b = rs->buf; |
3245 | char *endb = rs->buf + get_remote_packet_size (); | |
3246 | ||
3247 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3248 | b += strlen (b); | |
3249 | write_ptid (b, endb, tp->ptid); | |
3250 | ||
2e9f7625 | 3251 | putpkt (rs->buf); |
6d820c5c | 3252 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3253 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3254 | { |
2e9f7625 DJ |
3255 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3256 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3257 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3258 | return display_buf; |
3259 | } | |
0f71a2f6 | 3260 | } |
9d1f7ab2 MS |
3261 | |
3262 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3263 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3264 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3265 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3266 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3267 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3268 | if (threadinfo.active) | |
0f71a2f6 | 3269 | { |
9d1f7ab2 | 3270 | if (*threadinfo.shortname) |
2bc416ba | 3271 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3272 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3273 | if (*threadinfo.display) |
2bc416ba | 3274 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3275 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3276 | if (*threadinfo.more_display) |
2bc416ba | 3277 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3278 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3279 | |
3280 | if (n > 0) | |
c5aa993b | 3281 | { |
23860348 | 3282 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3283 | if (',' == display_buf[n-1]) |
3284 | display_buf[n-1] = ' '; | |
3285 | return display_buf; | |
c5aa993b | 3286 | } |
0f71a2f6 | 3287 | } |
9d1f7ab2 | 3288 | return NULL; |
0f71a2f6 | 3289 | } |
c906108c | 3290 | \f |
c5aa993b | 3291 | |
0fb4aa4b | 3292 | static int |
61fc905d | 3293 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3294 | struct static_tracepoint_marker *marker) |
3295 | { | |
3296 | struct remote_state *rs = get_remote_state (); | |
3297 | char *p = rs->buf; | |
3298 | ||
bba74b36 | 3299 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3300 | p += strlen (p); |
3301 | p += hexnumstr (p, addr); | |
3302 | putpkt (rs->buf); | |
3303 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3304 | p = rs->buf; | |
3305 | ||
3306 | if (*p == 'E') | |
3307 | error (_("Remote failure reply: %s"), p); | |
3308 | ||
3309 | if (*p++ == 'm') | |
3310 | { | |
3311 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3312 | return 1; | |
3313 | } | |
3314 | ||
3315 | return 0; | |
3316 | } | |
3317 | ||
0fb4aa4b | 3318 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3319 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3320 | const char *strid) | |
0fb4aa4b PA |
3321 | { |
3322 | struct remote_state *rs = get_remote_state (); | |
3323 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3324 | struct static_tracepoint_marker *marker = NULL; | |
3325 | struct cleanup *old_chain; | |
3326 | char *p; | |
3327 | ||
3328 | /* Ask for a first packet of static tracepoint marker | |
3329 | definition. */ | |
3330 | putpkt ("qTfSTM"); | |
3331 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3332 | p = rs->buf; | |
3333 | if (*p == 'E') | |
3334 | error (_("Remote failure reply: %s"), p); | |
3335 | ||
3336 | old_chain = make_cleanup (free_current_marker, &marker); | |
3337 | ||
3338 | while (*p++ == 'm') | |
3339 | { | |
3340 | if (marker == NULL) | |
3341 | marker = XCNEW (struct static_tracepoint_marker); | |
3342 | ||
3343 | do | |
3344 | { | |
3345 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3346 | ||
3347 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3348 | { | |
3349 | VEC_safe_push (static_tracepoint_marker_p, | |
3350 | markers, marker); | |
3351 | marker = NULL; | |
3352 | } | |
3353 | else | |
3354 | { | |
3355 | release_static_tracepoint_marker (marker); | |
3356 | memset (marker, 0, sizeof (*marker)); | |
3357 | } | |
3358 | } | |
3359 | while (*p++ == ','); /* comma-separated list */ | |
3360 | /* Ask for another packet of static tracepoint definition. */ | |
3361 | putpkt ("qTsSTM"); | |
3362 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3363 | p = rs->buf; | |
3364 | } | |
3365 | ||
3366 | do_cleanups (old_chain); | |
3367 | return markers; | |
3368 | } | |
3369 | ||
3370 | \f | |
10760264 JB |
3371 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3372 | ||
3373 | static ptid_t | |
1e6b91a4 | 3374 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3375 | { |
ba348170 | 3376 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3377 | } |
3378 | \f | |
3379 | ||
24b06219 | 3380 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3381 | |
3382 | static void | |
fba45db2 | 3383 | extended_remote_restart (void) |
c906108c | 3384 | { |
d01949b6 | 3385 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3386 | |
3387 | /* Send the restart command; for reasons I don't understand the | |
3388 | remote side really expects a number after the "R". */ | |
ea9c271d | 3389 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3390 | putpkt (rs->buf); |
c906108c | 3391 | |
ad9a8f3f | 3392 | remote_fileio_reset (); |
c906108c SS |
3393 | } |
3394 | \f | |
3395 | /* Clean up connection to a remote debugger. */ | |
3396 | ||
c906108c | 3397 | static void |
de90e03d | 3398 | remote_close (struct target_ops *self) |
c906108c | 3399 | { |
5d93a237 TT |
3400 | struct remote_state *rs = get_remote_state (); |
3401 | ||
3402 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3403 | return; /* already closed */ |
3404 | ||
3405 | /* Make sure we leave stdin registered in the event loop, and we | |
3406 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3407 | remote_terminal_ours (self); |
ce5ce7ed | 3408 | |
5d93a237 TT |
3409 | serial_close (rs->remote_desc); |
3410 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3411 | |
3412 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3413 | of all the inferiors and their threads we were controlling. |
3414 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3415 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3416 | inferior_ptid = null_ptid; |
f67fd822 | 3417 | discard_all_inferiors (); |
ce5ce7ed | 3418 | |
f48ff2a7 YQ |
3419 | /* We are closing the remote target, so we should discard |
3420 | everything of this target. */ | |
bcc75809 | 3421 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3422 | |
3423 | if (remote_async_inferior_event_token) | |
3424 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3425 | |
5965e028 | 3426 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3427 | |
3428 | trace_reset_local_state (); | |
c906108c SS |
3429 | } |
3430 | ||
23860348 | 3431 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3432 | |
3433 | static void | |
fba45db2 | 3434 | get_offsets (void) |
c906108c | 3435 | { |
d01949b6 | 3436 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3437 | char *buf; |
085dd6e6 | 3438 | char *ptr; |
31d99776 DJ |
3439 | int lose, num_segments = 0, do_sections, do_segments; |
3440 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3441 | struct section_offsets *offs; |
31d99776 DJ |
3442 | struct symfile_segment_data *data; |
3443 | ||
3444 | if (symfile_objfile == NULL) | |
3445 | return; | |
c906108c SS |
3446 | |
3447 | putpkt ("qOffsets"); | |
6d820c5c | 3448 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3449 | buf = rs->buf; |
c906108c SS |
3450 | |
3451 | if (buf[0] == '\000') | |
3452 | return; /* Return silently. Stub doesn't support | |
23860348 | 3453 | this command. */ |
c906108c SS |
3454 | if (buf[0] == 'E') |
3455 | { | |
8a3fe4f8 | 3456 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3457 | return; |
3458 | } | |
3459 | ||
3460 | /* Pick up each field in turn. This used to be done with scanf, but | |
3461 | scanf will make trouble if CORE_ADDR size doesn't match | |
3462 | conversion directives correctly. The following code will work | |
3463 | with any size of CORE_ADDR. */ | |
3464 | text_addr = data_addr = bss_addr = 0; | |
3465 | ptr = buf; | |
3466 | lose = 0; | |
3467 | ||
61012eef | 3468 | if (startswith (ptr, "Text=")) |
c906108c SS |
3469 | { |
3470 | ptr += 5; | |
3471 | /* Don't use strtol, could lose on big values. */ | |
3472 | while (*ptr && *ptr != ';') | |
3473 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3474 | |
61012eef | 3475 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3476 | { |
3477 | ptr += 6; | |
3478 | while (*ptr && *ptr != ';') | |
3479 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3480 | } | |
3481 | else | |
3482 | lose = 1; | |
3483 | ||
61012eef | 3484 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3485 | { |
3486 | ptr += 5; | |
3487 | while (*ptr && *ptr != ';') | |
3488 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3489 | |
31d99776 DJ |
3490 | if (bss_addr != data_addr) |
3491 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3492 | } | |
3493 | else | |
3494 | lose = 1; | |
3495 | } | |
61012eef | 3496 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3497 | { |
31d99776 DJ |
3498 | ptr += 8; |
3499 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3500 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3501 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3502 | num_segments = 1; | |
3503 | ||
61012eef | 3504 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3505 | { |
3506 | ptr += 9; | |
3507 | while (*ptr && *ptr != ';') | |
3508 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3509 | num_segments++; | |
3510 | } | |
c906108c SS |
3511 | } |
3512 | else | |
3513 | lose = 1; | |
3514 | ||
3515 | if (lose) | |
8a3fe4f8 | 3516 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3517 | else if (*ptr != '\0') |
3518 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3519 | |
802188a7 | 3520 | offs = ((struct section_offsets *) |
a39a16c4 | 3521 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3522 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3523 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3524 | |
31d99776 DJ |
3525 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3526 | do_segments = (data != NULL); | |
3527 | do_sections = num_segments == 0; | |
c906108c | 3528 | |
28c32713 | 3529 | if (num_segments > 0) |
31d99776 | 3530 | { |
31d99776 DJ |
3531 | segments[0] = text_addr; |
3532 | segments[1] = data_addr; | |
3533 | } | |
28c32713 JB |
3534 | /* If we have two segments, we can still try to relocate everything |
3535 | by assuming that the .text and .data offsets apply to the whole | |
3536 | text and data segments. Convert the offsets given in the packet | |
3537 | to base addresses for symfile_map_offsets_to_segments. */ | |
3538 | else if (data && data->num_segments == 2) | |
3539 | { | |
3540 | segments[0] = data->segment_bases[0] + text_addr; | |
3541 | segments[1] = data->segment_bases[1] + data_addr; | |
3542 | num_segments = 2; | |
3543 | } | |
8d385431 DJ |
3544 | /* If the object file has only one segment, assume that it is text |
3545 | rather than data; main programs with no writable data are rare, | |
3546 | but programs with no code are useless. Of course the code might | |
3547 | have ended up in the data segment... to detect that we would need | |
3548 | the permissions here. */ | |
3549 | else if (data && data->num_segments == 1) | |
3550 | { | |
3551 | segments[0] = data->segment_bases[0] + text_addr; | |
3552 | num_segments = 1; | |
3553 | } | |
28c32713 JB |
3554 | /* There's no way to relocate by segment. */ |
3555 | else | |
3556 | do_segments = 0; | |
31d99776 DJ |
3557 | |
3558 | if (do_segments) | |
3559 | { | |
3560 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3561 | offs, num_segments, segments); | |
3562 | ||
3563 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3564 | error (_("Can not handle qOffsets TextSeg " |
3565 | "response with this symbol file")); | |
31d99776 DJ |
3566 | |
3567 | if (ret > 0) | |
3568 | do_sections = 0; | |
3569 | } | |
c906108c | 3570 | |
9ef895d6 DJ |
3571 | if (data) |
3572 | free_symfile_segment_data (data); | |
31d99776 DJ |
3573 | |
3574 | if (do_sections) | |
3575 | { | |
3576 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3577 | ||
3e43a32a MS |
3578 | /* This is a temporary kludge to force data and bss to use the |
3579 | same offsets because that's what nlmconv does now. The real | |
3580 | solution requires changes to the stub and remote.c that I | |
3581 | don't have time to do right now. */ | |
31d99776 DJ |
3582 | |
3583 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3584 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3585 | } | |
c906108c SS |
3586 | |
3587 | objfile_relocate (symfile_objfile, offs); | |
3588 | } | |
3589 | ||
9a7071a8 JB |
3590 | /* Send interrupt_sequence to remote target. */ |
3591 | static void | |
eeae04df | 3592 | send_interrupt_sequence (void) |
9a7071a8 | 3593 | { |
5d93a237 TT |
3594 | struct remote_state *rs = get_remote_state (); |
3595 | ||
9a7071a8 | 3596 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3597 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3598 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3599 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3600 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3601 | { | |
5d93a237 | 3602 | serial_send_break (rs->remote_desc); |
c33e31fd | 3603 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3604 | } |
3605 | else | |
3606 | internal_error (__FILE__, __LINE__, | |
3607 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3608 | interrupt_sequence_mode); | |
3609 | } | |
3610 | ||
3405876a PA |
3611 | |
3612 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3613 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3614 | ||
3615 | static ptid_t | |
3616 | stop_reply_extract_thread (char *stop_reply) | |
3617 | { | |
3618 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3619 | { | |
3620 | char *p; | |
3621 | ||
3622 | /* Txx r:val ; r:val (...) */ | |
3623 | p = &stop_reply[3]; | |
3624 | ||
3625 | /* Look for "register" named "thread". */ | |
3626 | while (*p != '\0') | |
3627 | { | |
3628 | char *p1; | |
3629 | ||
3630 | p1 = strchr (p, ':'); | |
3631 | if (p1 == NULL) | |
3632 | return null_ptid; | |
3633 | ||
3634 | if (strncmp (p, "thread", p1 - p) == 0) | |
3635 | return read_ptid (++p1, &p); | |
3636 | ||
3637 | p1 = strchr (p, ';'); | |
3638 | if (p1 == NULL) | |
3639 | return null_ptid; | |
3640 | p1++; | |
3641 | ||
3642 | p = p1; | |
3643 | } | |
3644 | } | |
3645 | ||
3646 | return null_ptid; | |
3647 | } | |
3648 | ||
b7ea362b PA |
3649 | /* Determine the remote side's current thread. If we have a stop |
3650 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3651 | "thread" register we can extract the current thread from. If not, | |
3652 | ask the remote which is the current thread with qC. The former | |
3653 | method avoids a roundtrip. */ | |
3654 | ||
3655 | static ptid_t | |
3656 | get_current_thread (char *wait_status) | |
3657 | { | |
6a49a997 | 3658 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3659 | |
3660 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3661 | the target architecture, which we haven't yet fully determined at | |
3662 | this point. */ | |
3663 | if (wait_status != NULL) | |
3664 | ptid = stop_reply_extract_thread (wait_status); | |
3665 | if (ptid_equal (ptid, null_ptid)) | |
3666 | ptid = remote_current_thread (inferior_ptid); | |
3667 | ||
3668 | return ptid; | |
3669 | } | |
3670 | ||
49c62f2e PA |
3671 | /* Query the remote target for which is the current thread/process, |
3672 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3673 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3674 | to return the current thread. |
3675 | ||
3676 | This function is called after handling the '?' or 'vRun' packets, | |
3677 | whose response is a stop reply from which we can also try | |
3678 | extracting the thread. If the target doesn't support the explicit | |
3679 | qC query, we infer the current thread from that stop reply, passed | |
3680 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3681 | |
3682 | static void | |
3405876a | 3683 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3684 | { |
3685 | struct remote_state *rs = get_remote_state (); | |
3686 | int fake_pid_p = 0; | |
6a49a997 | 3687 | ptid_t ptid; |
49c62f2e PA |
3688 | |
3689 | inferior_ptid = null_ptid; | |
3690 | ||
b7ea362b PA |
3691 | /* Now, if we have thread information, update inferior_ptid. */ |
3692 | ptid = get_current_thread (wait_status); | |
3405876a | 3693 | |
49c62f2e PA |
3694 | if (!ptid_equal (ptid, null_ptid)) |
3695 | { | |
3696 | if (!remote_multi_process_p (rs)) | |
3697 | fake_pid_p = 1; | |
3698 | ||
3699 | inferior_ptid = ptid; | |
3700 | } | |
3701 | else | |
3702 | { | |
3703 | /* Without this, some commands which require an active target | |
3704 | (such as kill) won't work. This variable serves (at least) | |
3705 | double duty as both the pid of the target process (if it has | |
3706 | such), and as a flag indicating that a target is active. */ | |
3707 | inferior_ptid = magic_null_ptid; | |
3708 | fake_pid_p = 1; | |
3709 | } | |
3710 | ||
1b6e6f5c | 3711 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3712 | |
3713 | /* Add the main thread. */ | |
3714 | add_thread_silent (inferior_ptid); | |
3715 | } | |
3716 | ||
6efcd9a8 PA |
3717 | /* Print info about a thread that was found already stopped on |
3718 | connection. */ | |
3719 | ||
3720 | static void | |
3721 | print_one_stopped_thread (struct thread_info *thread) | |
3722 | { | |
3723 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3724 | ||
3725 | switch_to_thread (thread->ptid); | |
3726 | stop_pc = get_frame_pc (get_current_frame ()); | |
3727 | set_current_sal_from_frame (get_current_frame ()); | |
3728 | ||
3729 | thread->suspend.waitstatus_pending_p = 0; | |
3730 | ||
3731 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3732 | { | |
3733 | enum gdb_signal sig = ws->value.sig; | |
3734 | ||
3735 | if (signal_print_state (sig)) | |
3736 | observer_notify_signal_received (sig); | |
3737 | } | |
3738 | observer_notify_normal_stop (NULL, 1); | |
3739 | } | |
3740 | ||
221e1a37 PA |
3741 | /* Process all initial stop replies the remote side sent in response |
3742 | to the ? packet. These indicate threads that were already stopped | |
3743 | on initial connection. We mark these threads as stopped and print | |
3744 | their current frame before giving the user the prompt. */ | |
3745 | ||
3746 | static void | |
6efcd9a8 | 3747 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3748 | { |
3749 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3750 | struct inferior *inf; |
3751 | struct thread_info *thread; | |
3752 | struct thread_info *selected = NULL; | |
3753 | struct thread_info *lowest_stopped = NULL; | |
3754 | struct thread_info *first = NULL; | |
221e1a37 PA |
3755 | |
3756 | /* Consume the initial pending events. */ | |
3757 | while (pending_stop_replies-- > 0) | |
3758 | { | |
3759 | ptid_t waiton_ptid = minus_one_ptid; | |
3760 | ptid_t event_ptid; | |
3761 | struct target_waitstatus ws; | |
3762 | int ignore_event = 0; | |
6efcd9a8 | 3763 | struct thread_info *thread; |
221e1a37 PA |
3764 | |
3765 | memset (&ws, 0, sizeof (ws)); | |
3766 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3767 | if (remote_debug) | |
3768 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3769 | ||
3770 | switch (ws.kind) | |
3771 | { | |
3772 | case TARGET_WAITKIND_IGNORE: | |
3773 | case TARGET_WAITKIND_NO_RESUMED: | |
3774 | case TARGET_WAITKIND_SIGNALLED: | |
3775 | case TARGET_WAITKIND_EXITED: | |
3776 | /* We shouldn't see these, but if we do, just ignore. */ | |
3777 | if (remote_debug) | |
3778 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3779 | ignore_event = 1; | |
3780 | break; | |
3781 | ||
3782 | case TARGET_WAITKIND_EXECD: | |
3783 | xfree (ws.value.execd_pathname); | |
3784 | break; | |
3785 | default: | |
3786 | break; | |
3787 | } | |
3788 | ||
3789 | if (ignore_event) | |
3790 | continue; | |
3791 | ||
6efcd9a8 | 3792 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3793 | |
3794 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3795 | { | |
3796 | enum gdb_signal sig = ws.value.sig; | |
3797 | ||
3798 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3799 | instead of signal 0. Suppress it. */ | |
3800 | if (sig == GDB_SIGNAL_TRAP) | |
3801 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3802 | thread->suspend.stop_signal = sig; |
3803 | ws.value.sig = sig; | |
3804 | } | |
221e1a37 | 3805 | |
6efcd9a8 PA |
3806 | thread->suspend.waitstatus = ws; |
3807 | ||
3808 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3809 | || ws.value.sig != GDB_SIGNAL_0) | |
3810 | thread->suspend.waitstatus_pending_p = 1; | |
3811 | ||
3812 | set_executing (event_ptid, 0); | |
3813 | set_running (event_ptid, 0); | |
3814 | } | |
3815 | ||
3816 | /* "Notice" the new inferiors before anything related to | |
3817 | registers/memory. */ | |
3818 | ALL_INFERIORS (inf) | |
3819 | { | |
3820 | if (inf->pid == 0) | |
3821 | continue; | |
3822 | ||
3823 | inf->needs_setup = 1; | |
3824 | ||
3825 | if (non_stop) | |
3826 | { | |
3827 | thread = any_live_thread_of_process (inf->pid); | |
3828 | notice_new_inferior (thread->ptid, | |
3829 | thread->state == THREAD_RUNNING, | |
3830 | from_tty); | |
3831 | } | |
3832 | } | |
3833 | ||
3834 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3835 | records the threads' stop pc, so must be done after "noticing" | |
3836 | the inferiors. */ | |
3837 | if (!non_stop) | |
3838 | { | |
3839 | stop_all_threads (); | |
3840 | ||
3841 | /* If all threads of an inferior were already stopped, we | |
3842 | haven't setup the inferior yet. */ | |
3843 | ALL_INFERIORS (inf) | |
3844 | { | |
3845 | if (inf->pid == 0) | |
3846 | continue; | |
221e1a37 | 3847 | |
6efcd9a8 PA |
3848 | if (inf->needs_setup) |
3849 | { | |
3850 | thread = any_live_thread_of_process (inf->pid); | |
3851 | switch_to_thread_no_regs (thread); | |
3852 | setup_inferior (0); | |
3853 | } | |
3854 | } | |
221e1a37 | 3855 | } |
6efcd9a8 PA |
3856 | |
3857 | /* Now go over all threads that are stopped, and print their current | |
3858 | frame. If all-stop, then if there's a signalled thread, pick | |
3859 | that as current. */ | |
3860 | ALL_NON_EXITED_THREADS (thread) | |
3861 | { | |
3862 | struct target_waitstatus *ws; | |
3863 | ||
3864 | if (first == NULL) | |
3865 | first = thread; | |
3866 | ||
3867 | if (!non_stop) | |
3868 | set_running (thread->ptid, 0); | |
3869 | else if (thread->state != THREAD_STOPPED) | |
3870 | continue; | |
3871 | ||
3872 | ws = &thread->suspend.waitstatus; | |
3873 | ||
3874 | if (selected == NULL | |
3875 | && thread->suspend.waitstatus_pending_p) | |
3876 | selected = thread; | |
3877 | ||
3878 | if (lowest_stopped == NULL || thread->num < lowest_stopped->num) | |
3879 | lowest_stopped = thread; | |
3880 | ||
3881 | if (non_stop) | |
3882 | print_one_stopped_thread (thread); | |
3883 | } | |
3884 | ||
3885 | /* In all-stop, we only print the status of one thread, and leave | |
3886 | others with their status pending. */ | |
3887 | if (!non_stop) | |
3888 | { | |
3889 | thread = selected; | |
3890 | if (thread == NULL) | |
3891 | thread = lowest_stopped; | |
3892 | if (thread == NULL) | |
3893 | thread = first; | |
3894 | ||
3895 | print_one_stopped_thread (thread); | |
3896 | } | |
3897 | ||
3898 | /* For "info program". */ | |
3899 | thread = inferior_thread (); | |
3900 | if (thread->state == THREAD_STOPPED) | |
3901 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
3902 | } |
3903 | ||
9cbc821d | 3904 | static void |
04bd08de | 3905 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3906 | { |
c8d104ad PA |
3907 | struct remote_state *rs = get_remote_state (); |
3908 | struct packet_config *noack_config; | |
2d717e4f | 3909 | char *wait_status = NULL; |
8621d6a9 | 3910 | |
23860348 | 3911 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3912 | QUIT; |
c906108c | 3913 | |
9a7071a8 JB |
3914 | if (interrupt_on_connect) |
3915 | send_interrupt_sequence (); | |
3916 | ||
57e12211 | 3917 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3918 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3919 | |
1e51243a PA |
3920 | /* Signal other parts that we're going through the initial setup, |
3921 | and so things may not be stable yet. */ | |
3922 | rs->starting_up = 1; | |
3923 | ||
c8d104ad PA |
3924 | /* The first packet we send to the target is the optional "supported |
3925 | packets" request. If the target can answer this, it will tell us | |
3926 | which later probes to skip. */ | |
3927 | remote_query_supported (); | |
3928 | ||
d914c394 | 3929 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3930 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3931 | remote_set_permissions (target); |
d914c394 | 3932 | |
c8d104ad PA |
3933 | /* Next, we possibly activate noack mode. |
3934 | ||
3935 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3936 | enable noack mode if the stub reported a wish for it with | |
3937 | qSupported. | |
3938 | ||
3939 | If set to TRUE, then enable noack mode even if the stub didn't | |
3940 | report it in qSupported. If the stub doesn't reply OK, the | |
3941 | session ends with an error. | |
3942 | ||
3943 | If FALSE, then don't activate noack mode, regardless of what the | |
3944 | stub claimed should be the default with qSupported. */ | |
3945 | ||
3946 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3947 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3948 | { |
3949 | putpkt ("QStartNoAckMode"); | |
3950 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3951 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3952 | rs->noack_mode = 1; | |
3953 | } | |
3954 | ||
04bd08de | 3955 | if (extended_p) |
5fe04517 PA |
3956 | { |
3957 | /* Tell the remote that we are using the extended protocol. */ | |
3958 | putpkt ("!"); | |
3959 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3960 | } | |
3961 | ||
9b224c5e PA |
3962 | /* Let the target know which signals it is allowed to pass down to |
3963 | the program. */ | |
3964 | update_signals_program_target (); | |
3965 | ||
d962ef82 DJ |
3966 | /* Next, if the target can specify a description, read it. We do |
3967 | this before anything involving memory or registers. */ | |
3968 | target_find_description (); | |
3969 | ||
6c95b8df PA |
3970 | /* Next, now that we know something about the target, update the |
3971 | address spaces in the program spaces. */ | |
3972 | update_address_spaces (); | |
3973 | ||
50c71eaf PA |
3974 | /* On OSs where the list of libraries is global to all |
3975 | processes, we fetch them early. */ | |
f5656ead | 3976 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3977 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3978 | |
6efcd9a8 | 3979 | if (target_is_non_stop_p ()) |
74531fed | 3980 | { |
4082afcc | 3981 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3982 | error (_("Non-stop mode requested, but remote " |
3983 | "does not support non-stop")); | |
74531fed PA |
3984 | |
3985 | putpkt ("QNonStop:1"); | |
3986 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3987 | ||
3988 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3989 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3990 | |
3991 | /* Find about threads and processes the stub is already | |
3992 | controlling. We default to adding them in the running state. | |
3993 | The '?' query below will then tell us about which threads are | |
3994 | stopped. */ | |
e8032dde | 3995 | remote_update_thread_list (target); |
74531fed | 3996 | } |
4082afcc | 3997 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3998 | { |
3999 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4000 | Request it explicitly. */ |
74531fed PA |
4001 | putpkt ("QNonStop:0"); |
4002 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4003 | ||
4004 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4005 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4006 | } |
4007 | ||
a0743c90 YQ |
4008 | /* Upload TSVs regardless of whether the target is running or not. The |
4009 | remote stub, such as GDBserver, may have some predefined or builtin | |
4010 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4011 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4012 | { |
4013 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4014 | ||
181e3713 | 4015 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4016 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4017 | } | |
4018 | ||
2d717e4f DJ |
4019 | /* Check whether the target is running now. */ |
4020 | putpkt ("?"); | |
4021 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4022 | ||
6efcd9a8 | 4023 | if (!target_is_non_stop_p ()) |
2d717e4f | 4024 | { |
e714e1bf UW |
4025 | ptid_t ptid; |
4026 | int fake_pid_p = 0; | |
4027 | struct inferior *inf; | |
4028 | ||
74531fed | 4029 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4030 | { |
04bd08de | 4031 | if (!extended_p) |
74531fed | 4032 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4033 | |
4034 | /* We're connected, but not running. Drop out before we | |
4035 | call start_remote. */ | |
e278ad5b | 4036 | rs->starting_up = 0; |
c35b1492 | 4037 | return; |
2d717e4f DJ |
4038 | } |
4039 | else | |
74531fed | 4040 | { |
74531fed | 4041 | /* Save the reply for later. */ |
224c3ddb | 4042 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4043 | strcpy (wait_status, rs->buf); |
4044 | } | |
4045 | ||
b7ea362b | 4046 | /* Fetch thread list. */ |
e8032dde | 4047 | target_update_thread_list (); |
b7ea362b | 4048 | |
74531fed PA |
4049 | /* Let the stub know that we want it to return the thread. */ |
4050 | set_continue_thread (minus_one_ptid); | |
4051 | ||
b7ea362b PA |
4052 | if (thread_count () == 0) |
4053 | { | |
4054 | /* Target has no concept of threads at all. GDB treats | |
4055 | non-threaded target as single-threaded; add a main | |
4056 | thread. */ | |
4057 | add_current_inferior_and_thread (wait_status); | |
4058 | } | |
4059 | else | |
4060 | { | |
4061 | /* We have thread information; select the thread the target | |
4062 | says should be current. If we're reconnecting to a | |
4063 | multi-threaded program, this will ideally be the thread | |
4064 | that last reported an event before GDB disconnected. */ | |
4065 | inferior_ptid = get_current_thread (wait_status); | |
4066 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4067 | { | |
4068 | /* Odd... The target was able to list threads, but not | |
4069 | tell us which thread was current (no "thread" | |
4070 | register in T stop reply?). Just pick the first | |
4071 | thread in the thread list then. */ | |
c9f35b34 KB |
4072 | |
4073 | if (remote_debug) | |
4074 | fprintf_unfiltered (gdb_stdlog, | |
4075 | "warning: couldn't determine remote " | |
4076 | "current thread; picking first in list.\n"); | |
4077 | ||
b7ea362b PA |
4078 | inferior_ptid = thread_list->ptid; |
4079 | } | |
4080 | } | |
74531fed | 4081 | |
6e586cc5 YQ |
4082 | /* init_wait_for_inferior should be called before get_offsets in order |
4083 | to manage `inserted' flag in bp loc in a correct state. | |
4084 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4085 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4086 | start_remote, set `inserted' flag to 1. In the initialization of | |
4087 | inferior, breakpoint_init_inferior should be called first, and then | |
4088 | breakpoint_re_set can be called. If this order is broken, state of | |
4089 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4090 | manipulation. */ | |
4091 | init_wait_for_inferior (); | |
4092 | ||
74531fed PA |
4093 | get_offsets (); /* Get text, data & bss offsets. */ |
4094 | ||
d962ef82 DJ |
4095 | /* If we could not find a description using qXfer, and we know |
4096 | how to do it some other way, try again. This is not | |
4097 | supported for non-stop; it could be, but it is tricky if | |
4098 | there are no stopped threads when we connect. */ | |
04bd08de | 4099 | if (remote_read_description_p (target) |
f5656ead | 4100 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4101 | { |
4102 | target_clear_description (); | |
4103 | target_find_description (); | |
4104 | } | |
4105 | ||
74531fed PA |
4106 | /* Use the previously fetched status. */ |
4107 | gdb_assert (wait_status != NULL); | |
4108 | strcpy (rs->buf, wait_status); | |
4109 | rs->cached_wait_status = 1; | |
4110 | ||
4111 | immediate_quit--; | |
04bd08de | 4112 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4113 | } |
4114 | else | |
4115 | { | |
68c97600 PA |
4116 | /* Clear WFI global state. Do this before finding about new |
4117 | threads and inferiors, and setting the current inferior. | |
4118 | Otherwise we would clear the proceed status of the current | |
4119 | inferior when we want its stop_soon state to be preserved | |
4120 | (see notice_new_inferior). */ | |
4121 | init_wait_for_inferior (); | |
4122 | ||
74531fed PA |
4123 | /* In non-stop, we will either get an "OK", meaning that there |
4124 | are no stopped threads at this time; or, a regular stop | |
4125 | reply. In the latter case, there may be more than one thread | |
4126 | stopped --- we pull them all out using the vStopped | |
4127 | mechanism. */ | |
4128 | if (strcmp (rs->buf, "OK") != 0) | |
4129 | { | |
722247f1 | 4130 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4131 | |
722247f1 YQ |
4132 | /* remote_notif_get_pending_replies acks this one, and gets |
4133 | the rest out. */ | |
f48ff2a7 | 4134 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4135 | = remote_notif_parse (notif, rs->buf); |
4136 | remote_notif_get_pending_events (notif); | |
74531fed | 4137 | } |
2d717e4f | 4138 | |
74531fed PA |
4139 | if (thread_count () == 0) |
4140 | { | |
04bd08de | 4141 | if (!extended_p) |
74531fed | 4142 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4143 | |
c35b1492 PA |
4144 | /* We're connected, but not running. Drop out before we |
4145 | call start_remote. */ | |
e278ad5b | 4146 | rs->starting_up = 0; |
c35b1492 PA |
4147 | return; |
4148 | } | |
74531fed | 4149 | |
74531fed PA |
4150 | /* In non-stop mode, any cached wait status will be stored in |
4151 | the stop reply queue. */ | |
4152 | gdb_assert (wait_status == NULL); | |
f0223081 | 4153 | |
2455069d | 4154 | /* Report all signals during attach/startup. */ |
94bedb42 | 4155 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4156 | |
4157 | /* If there are already stopped threads, mark them stopped and | |
4158 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4159 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4160 | |
4161 | if (target_can_async_p ()) | |
4162 | target_async (1); | |
74531fed | 4163 | } |
c8d104ad | 4164 | |
c8d104ad PA |
4165 | /* If we connected to a live target, do some additional setup. */ |
4166 | if (target_has_execution) | |
4167 | { | |
f4ccffad | 4168 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4169 | remote_check_symbols (); |
c8d104ad | 4170 | } |
50c71eaf | 4171 | |
d5551862 SS |
4172 | /* Possibly the target has been engaged in a trace run started |
4173 | previously; find out where things are at. */ | |
8bd200f1 | 4174 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4175 | { |
00bf0b85 | 4176 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4177 | |
00bf0b85 SS |
4178 | if (current_trace_status ()->running) |
4179 | printf_filtered (_("Trace is already running on the target.\n")); | |
4180 | ||
ab6617cc | 4181 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4182 | |
4183 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4184 | } |
4185 | ||
1e51243a PA |
4186 | /* The thread and inferior lists are now synchronized with the |
4187 | target, our symbols have been relocated, and we're merged the | |
4188 | target's tracepoints with ours. We're done with basic start | |
4189 | up. */ | |
4190 | rs->starting_up = 0; | |
4191 | ||
a25a5a45 PA |
4192 | /* Maybe breakpoints are global and need to be inserted now. */ |
4193 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4194 | insert_breakpoints (); |
c906108c SS |
4195 | } |
4196 | ||
4197 | /* Open a connection to a remote debugger. | |
4198 | NAME is the filename used for communication. */ | |
4199 | ||
4200 | static void | |
014f9477 | 4201 | remote_open (const char *name, int from_tty) |
c906108c | 4202 | { |
75c99385 | 4203 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4204 | } |
4205 | ||
c906108c SS |
4206 | /* Open a connection to a remote debugger using the extended |
4207 | remote gdb protocol. NAME is the filename used for communication. */ | |
4208 | ||
4209 | static void | |
014f9477 | 4210 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4211 | { |
75c99385 | 4212 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4213 | } |
4214 | ||
ca4f7f8b PA |
4215 | /* Reset all packets back to "unknown support". Called when opening a |
4216 | new connection to a remote target. */ | |
c906108c | 4217 | |
d471ea57 | 4218 | static void |
ca4f7f8b | 4219 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4220 | { |
4221 | int i; | |
a744cf53 | 4222 | |
444abaca | 4223 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4224 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4225 | } |
4226 | ||
ca4f7f8b PA |
4227 | /* Initialize all packet configs. */ |
4228 | ||
4229 | static void | |
4230 | init_all_packet_configs (void) | |
4231 | { | |
4232 | int i; | |
4233 | ||
4234 | for (i = 0; i < PACKET_MAX; i++) | |
4235 | { | |
4236 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4237 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4238 | } | |
4239 | } | |
4240 | ||
23860348 | 4241 | /* Symbol look-up. */ |
dc8acb97 MS |
4242 | |
4243 | static void | |
36d25514 | 4244 | remote_check_symbols (void) |
dc8acb97 | 4245 | { |
d01949b6 | 4246 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4247 | char *msg, *reply, *tmp; |
3b7344d5 | 4248 | struct bound_minimal_symbol sym; |
dc8acb97 | 4249 | int end; |
a5c0808e | 4250 | struct cleanup *old_chain; |
dc8acb97 | 4251 | |
63154eca PA |
4252 | /* The remote side has no concept of inferiors that aren't running |
4253 | yet, it only knows about running processes. If we're connected | |
4254 | but our current inferior is not running, we should not invite the | |
4255 | remote target to request symbol lookups related to its | |
4256 | (unrelated) current process. */ | |
4257 | if (!target_has_execution) | |
4258 | return; | |
4259 | ||
4082afcc | 4260 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4261 | return; |
4262 | ||
63154eca PA |
4263 | /* Make sure the remote is pointing at the right process. Note |
4264 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4265 | set_general_process (); |
4266 | ||
6d820c5c DJ |
4267 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4268 | because we need both at the same time. */ | |
224c3ddb | 4269 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4270 | old_chain = make_cleanup (xfree, msg); |
6d820c5c | 4271 | |
23860348 | 4272 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4273 | |
4274 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
4275 | getpkt (&rs->buf, &rs->buf_size, 0); |
4276 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 4277 | reply = rs->buf; |
dc8acb97 | 4278 | |
61012eef | 4279 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4280 | { |
77e371c0 TT |
4281 | struct bound_minimal_symbol sym; |
4282 | ||
dc8acb97 | 4283 | tmp = &reply[8]; |
cfd77fa1 | 4284 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4285 | msg[end] = '\0'; |
4286 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4287 | if (sym.minsym == NULL) |
ea9c271d | 4288 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4289 | else |
2bbe3cc1 | 4290 | { |
f5656ead | 4291 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4292 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4293 | |
4294 | /* If this is a function address, return the start of code | |
4295 | instead of any data function descriptor. */ | |
f5656ead | 4296 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4297 | sym_addr, |
4298 | ¤t_target); | |
4299 | ||
4300 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4301 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4302 | } |
4303 | ||
dc8acb97 | 4304 | putpkt (msg); |
6d820c5c | 4305 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4306 | reply = rs->buf; |
dc8acb97 | 4307 | } |
a5c0808e PA |
4308 | |
4309 | do_cleanups (old_chain); | |
dc8acb97 MS |
4310 | } |
4311 | ||
9db8d71f | 4312 | static struct serial * |
baa336ce | 4313 | remote_serial_open (const char *name) |
9db8d71f DJ |
4314 | { |
4315 | static int udp_warning = 0; | |
4316 | ||
4317 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4318 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4319 | serial connection is reliable and not the serial connection promising | |
4320 | to be. */ | |
61012eef | 4321 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4322 | { |
3e43a32a MS |
4323 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4324 | "Some events may be lost, rendering further debugging " | |
4325 | "impossible.")); | |
9db8d71f DJ |
4326 | udp_warning = 1; |
4327 | } | |
4328 | ||
4329 | return serial_open (name); | |
4330 | } | |
4331 | ||
d914c394 SS |
4332 | /* Inform the target of our permission settings. The permission flags |
4333 | work without this, but if the target knows the settings, it can do | |
4334 | a couple things. First, it can add its own check, to catch cases | |
4335 | that somehow manage to get by the permissions checks in target | |
4336 | methods. Second, if the target is wired to disallow particular | |
4337 | settings (for instance, a system in the field that is not set up to | |
4338 | be able to stop at a breakpoint), it can object to any unavailable | |
4339 | permissions. */ | |
4340 | ||
4341 | void | |
c378d69d | 4342 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4343 | { |
4344 | struct remote_state *rs = get_remote_state (); | |
4345 | ||
bba74b36 YQ |
4346 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4347 | "WriteReg:%x;WriteMem:%x;" | |
4348 | "InsertBreak:%x;InsertTrace:%x;" | |
4349 | "InsertFastTrace:%x;Stop:%x", | |
4350 | may_write_registers, may_write_memory, | |
4351 | may_insert_breakpoints, may_insert_tracepoints, | |
4352 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4353 | putpkt (rs->buf); |
4354 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4355 | ||
4356 | /* If the target didn't like the packet, warn the user. Do not try | |
4357 | to undo the user's settings, that would just be maddening. */ | |
4358 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4359 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4360 | } |
4361 | ||
be2a5f71 DJ |
4362 | /* This type describes each known response to the qSupported |
4363 | packet. */ | |
4364 | struct protocol_feature | |
4365 | { | |
4366 | /* The name of this protocol feature. */ | |
4367 | const char *name; | |
4368 | ||
4369 | /* The default for this protocol feature. */ | |
4370 | enum packet_support default_support; | |
4371 | ||
4372 | /* The function to call when this feature is reported, or after | |
4373 | qSupported processing if the feature is not supported. | |
4374 | The first argument points to this structure. The second | |
4375 | argument indicates whether the packet requested support be | |
4376 | enabled, disabled, or probed (or the default, if this function | |
4377 | is being called at the end of processing and this feature was | |
4378 | not reported). The third argument may be NULL; if not NULL, it | |
4379 | is a NUL-terminated string taken from the packet following | |
4380 | this feature's name and an equals sign. */ | |
4381 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4382 | const char *); | |
4383 | ||
4384 | /* The corresponding packet for this feature. Only used if | |
4385 | FUNC is remote_supported_packet. */ | |
4386 | int packet; | |
4387 | }; | |
4388 | ||
be2a5f71 DJ |
4389 | static void |
4390 | remote_supported_packet (const struct protocol_feature *feature, | |
4391 | enum packet_support support, | |
4392 | const char *argument) | |
4393 | { | |
4394 | if (argument) | |
4395 | { | |
4396 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4397 | " \"%s\"."), feature->name); | |
4398 | return; | |
4399 | } | |
4400 | ||
4082afcc | 4401 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4402 | } |
be2a5f71 DJ |
4403 | |
4404 | static void | |
4405 | remote_packet_size (const struct protocol_feature *feature, | |
4406 | enum packet_support support, const char *value) | |
4407 | { | |
4408 | struct remote_state *rs = get_remote_state (); | |
4409 | ||
4410 | int packet_size; | |
4411 | char *value_end; | |
4412 | ||
4413 | if (support != PACKET_ENABLE) | |
4414 | return; | |
4415 | ||
4416 | if (value == NULL || *value == '\0') | |
4417 | { | |
4418 | warning (_("Remote target reported \"%s\" without a size."), | |
4419 | feature->name); | |
4420 | return; | |
4421 | } | |
4422 | ||
4423 | errno = 0; | |
4424 | packet_size = strtol (value, &value_end, 16); | |
4425 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4426 | { | |
4427 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4428 | feature->name, value); | |
4429 | return; | |
4430 | } | |
4431 | ||
be2a5f71 DJ |
4432 | /* Record the new maximum packet size. */ |
4433 | rs->explicit_packet_size = packet_size; | |
4434 | } | |
4435 | ||
dc473cfb | 4436 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4437 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4438 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4439 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4440 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4441 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4442 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4443 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4444 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4445 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4446 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4447 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4448 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4449 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4450 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4451 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4452 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4453 | PACKET_qXfer_spu_read }, | |
4454 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4455 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4456 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4457 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4458 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4459 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4460 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4461 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4462 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4463 | PACKET_QPassSignals }, | |
9b224c5e PA |
4464 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4465 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4466 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4467 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4468 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4469 | PACKET_multiprocess_feature }, | |
4470 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4471 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4472 | PACKET_qXfer_siginfo_read }, | |
4473 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4474 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4475 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4476 | PACKET_ConditionalTracepoints }, |
4082afcc | 4477 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4478 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4479 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4480 | PACKET_BreakpointCommands }, |
4082afcc | 4481 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4482 | PACKET_FastTracepoints }, |
4082afcc | 4483 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4484 | PACKET_StaticTracepoints }, |
4082afcc | 4485 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4486 | PACKET_InstallInTrace}, |
4082afcc PA |
4487 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4488 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4489 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4490 | PACKET_bc }, | |
4491 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4492 | PACKET_bs }, | |
409873ef SS |
4493 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4494 | PACKET_TracepointSource }, | |
d914c394 SS |
4495 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4496 | PACKET_QAllow }, | |
4082afcc PA |
4497 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4498 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4499 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4500 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4501 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4502 | PACKET_qXfer_uib }, | |
03583c20 UW |
4503 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4504 | PACKET_QDisableRandomization }, | |
d1feda86 | 4505 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4506 | { "QTBuffer:size", PACKET_DISABLE, |
4507 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4508 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4509 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4510 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4511 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4512 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4513 | PACKET_qXfer_btrace }, |
4514 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4515 | PACKET_qXfer_btrace_conf }, |
4516 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4517 | PACKET_Qbtrace_conf_bts_size }, |
4518 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4519 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4520 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4521 | PACKET_fork_event_feature }, | |
4522 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4523 | PACKET_vfork_event_feature }, | |
94585166 DB |
4524 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4525 | PACKET_exec_event_feature }, | |
b20a6524 | 4526 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4527 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4528 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4529 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
be2a5f71 DJ |
4530 | }; |
4531 | ||
c8d5aac9 L |
4532 | static char *remote_support_xml; |
4533 | ||
4534 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4535 | ||
4536 | void | |
6e39997a | 4537 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4538 | { |
4539 | #if defined(HAVE_LIBEXPAT) | |
4540 | if (remote_support_xml == NULL) | |
c4f7c687 | 4541 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4542 | else |
4543 | { | |
4544 | char *copy = xstrdup (remote_support_xml + 13); | |
4545 | char *p = strtok (copy, ","); | |
4546 | ||
4547 | do | |
4548 | { | |
4549 | if (strcmp (p, xml) == 0) | |
4550 | { | |
4551 | /* already there */ | |
4552 | xfree (copy); | |
4553 | return; | |
4554 | } | |
4555 | } | |
4556 | while ((p = strtok (NULL, ",")) != NULL); | |
4557 | xfree (copy); | |
4558 | ||
94b0dee1 PA |
4559 | remote_support_xml = reconcat (remote_support_xml, |
4560 | remote_support_xml, ",", xml, | |
4561 | (char *) NULL); | |
c8d5aac9 L |
4562 | } |
4563 | #endif | |
4564 | } | |
4565 | ||
4566 | static char * | |
4567 | remote_query_supported_append (char *msg, const char *append) | |
4568 | { | |
4569 | if (msg) | |
94b0dee1 | 4570 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4571 | else |
4572 | return xstrdup (append); | |
4573 | } | |
4574 | ||
be2a5f71 DJ |
4575 | static void |
4576 | remote_query_supported (void) | |
4577 | { | |
4578 | struct remote_state *rs = get_remote_state (); | |
4579 | char *next; | |
4580 | int i; | |
4581 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4582 | ||
4583 | /* The packet support flags are handled differently for this packet | |
4584 | than for most others. We treat an error, a disabled packet, and | |
4585 | an empty response identically: any features which must be reported | |
4586 | to be used will be automatically disabled. An empty buffer | |
4587 | accomplishes this, since that is also the representation for a list | |
4588 | containing no features. */ | |
4589 | ||
4590 | rs->buf[0] = 0; | |
4082afcc | 4591 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4592 | { |
c8d5aac9 | 4593 | char *q = NULL; |
94b0dee1 | 4594 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4595 | |
73b8c1fd PA |
4596 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4597 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4598 | |
f7e6eed5 PA |
4599 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4600 | q = remote_query_supported_append (q, "swbreak+"); | |
4601 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4602 | q = remote_query_supported_append (q, "hwbreak+"); | |
4603 | ||
dde08ee1 PA |
4604 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4605 | ||
89245bc0 DB |
4606 | if (rs->extended) |
4607 | { | |
4608 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4609 | != AUTO_BOOLEAN_FALSE) | |
4610 | q = remote_query_supported_append (q, "fork-events+"); | |
4611 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4612 | != AUTO_BOOLEAN_FALSE) | |
4613 | q = remote_query_supported_append (q, "vfork-events+"); | |
94585166 DB |
4614 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
4615 | != AUTO_BOOLEAN_FALSE) | |
4616 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 DB |
4617 | } |
4618 | ||
750ce8d1 YQ |
4619 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4620 | q = remote_query_supported_append (q, "vContSupported+"); | |
4621 | ||
65706a29 PA |
4622 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4623 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4624 | ||
b35d5edb PA |
4625 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4626 | the qSupported:xmlRegisters=i386 handling. */ | |
4627 | if (remote_support_xml != NULL) | |
4628 | q = remote_query_supported_append (q, remote_support_xml); | |
4629 | ||
dde08ee1 PA |
4630 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4631 | putpkt (q); | |
82f73884 | 4632 | |
94b0dee1 PA |
4633 | do_cleanups (old_chain); |
4634 | ||
be2a5f71 DJ |
4635 | getpkt (&rs->buf, &rs->buf_size, 0); |
4636 | ||
4637 | /* If an error occured, warn, but do not return - just reset the | |
4638 | buffer to empty and go on to disable features. */ | |
4639 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4640 | == PACKET_ERROR) | |
4641 | { | |
4642 | warning (_("Remote failure reply: %s"), rs->buf); | |
4643 | rs->buf[0] = 0; | |
4644 | } | |
4645 | } | |
4646 | ||
4647 | memset (seen, 0, sizeof (seen)); | |
4648 | ||
4649 | next = rs->buf; | |
4650 | while (*next) | |
4651 | { | |
4652 | enum packet_support is_supported; | |
4653 | char *p, *end, *name_end, *value; | |
4654 | ||
4655 | /* First separate out this item from the rest of the packet. If | |
4656 | there's another item after this, we overwrite the separator | |
4657 | (terminated strings are much easier to work with). */ | |
4658 | p = next; | |
4659 | end = strchr (p, ';'); | |
4660 | if (end == NULL) | |
4661 | { | |
4662 | end = p + strlen (p); | |
4663 | next = end; | |
4664 | } | |
4665 | else | |
4666 | { | |
89be2091 DJ |
4667 | *end = '\0'; |
4668 | next = end + 1; | |
4669 | ||
be2a5f71 DJ |
4670 | if (end == p) |
4671 | { | |
4672 | warning (_("empty item in \"qSupported\" response")); | |
4673 | continue; | |
4674 | } | |
be2a5f71 DJ |
4675 | } |
4676 | ||
4677 | name_end = strchr (p, '='); | |
4678 | if (name_end) | |
4679 | { | |
4680 | /* This is a name=value entry. */ | |
4681 | is_supported = PACKET_ENABLE; | |
4682 | value = name_end + 1; | |
4683 | *name_end = '\0'; | |
4684 | } | |
4685 | else | |
4686 | { | |
4687 | value = NULL; | |
4688 | switch (end[-1]) | |
4689 | { | |
4690 | case '+': | |
4691 | is_supported = PACKET_ENABLE; | |
4692 | break; | |
4693 | ||
4694 | case '-': | |
4695 | is_supported = PACKET_DISABLE; | |
4696 | break; | |
4697 | ||
4698 | case '?': | |
4699 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4700 | break; | |
4701 | ||
4702 | default: | |
3e43a32a MS |
4703 | warning (_("unrecognized item \"%s\" " |
4704 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4705 | continue; |
4706 | } | |
4707 | end[-1] = '\0'; | |
4708 | } | |
4709 | ||
4710 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4711 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4712 | { | |
4713 | const struct protocol_feature *feature; | |
4714 | ||
4715 | seen[i] = 1; | |
4716 | feature = &remote_protocol_features[i]; | |
4717 | feature->func (feature, is_supported, value); | |
4718 | break; | |
4719 | } | |
4720 | } | |
4721 | ||
4722 | /* If we increased the packet size, make sure to increase the global | |
4723 | buffer size also. We delay this until after parsing the entire | |
4724 | qSupported packet, because this is the same buffer we were | |
4725 | parsing. */ | |
4726 | if (rs->buf_size < rs->explicit_packet_size) | |
4727 | { | |
4728 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4729 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4730 | } |
4731 | ||
4732 | /* Handle the defaults for unmentioned features. */ | |
4733 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4734 | if (!seen[i]) | |
4735 | { | |
4736 | const struct protocol_feature *feature; | |
4737 | ||
4738 | feature = &remote_protocol_features[i]; | |
4739 | feature->func (feature, feature->default_support, NULL); | |
4740 | } | |
4741 | } | |
4742 | ||
78a095c3 JK |
4743 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4744 | on it so remove them first. */ | |
4745 | ||
4746 | static void | |
4747 | remote_unpush_target (void) | |
4748 | { | |
915ef8b1 | 4749 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4750 | } |
be2a5f71 | 4751 | |
c906108c | 4752 | static void |
014f9477 | 4753 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4754 | struct target_ops *target, int extended_p) |
c906108c | 4755 | { |
d01949b6 | 4756 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4757 | |
c906108c | 4758 | if (name == 0) |
8a3fe4f8 | 4759 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4760 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4761 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4762 | |
23860348 | 4763 | /* See FIXME above. */ |
c6ebd6cf | 4764 | if (!target_async_permitted) |
92d1e331 | 4765 | wait_forever_enabled_p = 1; |
6426a772 | 4766 | |
2d717e4f | 4767 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4768 | Ask this question first, before target_preopen has a chance to kill |
4769 | anything. */ | |
5d93a237 | 4770 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4771 | { |
78a095c3 JK |
4772 | if (from_tty |
4773 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4774 | error (_("Still connected.")); |
4775 | } | |
4776 | ||
78a095c3 | 4777 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4778 | target_preopen (from_tty); |
4779 | ||
89be2091 | 4780 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4781 | xfree (rs->last_pass_packet); |
4782 | rs->last_pass_packet = NULL; | |
89be2091 | 4783 | |
9b224c5e PA |
4784 | /* Make sure we send the program signals list the next time we |
4785 | resume. */ | |
5e4a05c4 TT |
4786 | xfree (rs->last_program_signals_packet); |
4787 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4788 | |
ad9a8f3f | 4789 | remote_fileio_reset (); |
1dd41f16 NS |
4790 | reopen_exec_file (); |
4791 | reread_symbols (); | |
4792 | ||
5d93a237 TT |
4793 | rs->remote_desc = remote_serial_open (name); |
4794 | if (!rs->remote_desc) | |
c906108c SS |
4795 | perror_with_name (name); |
4796 | ||
4797 | if (baud_rate != -1) | |
4798 | { | |
5d93a237 | 4799 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4800 | { |
9b74d5d3 KB |
4801 | /* The requested speed could not be set. Error out to |
4802 | top level after closing remote_desc. Take care to | |
4803 | set remote_desc to NULL to avoid closing remote_desc | |
4804 | more than once. */ | |
5d93a237 TT |
4805 | serial_close (rs->remote_desc); |
4806 | rs->remote_desc = NULL; | |
c906108c SS |
4807 | perror_with_name (name); |
4808 | } | |
4809 | } | |
4810 | ||
236af5e3 | 4811 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4812 | serial_raw (rs->remote_desc); |
c906108c SS |
4813 | |
4814 | /* If there is something sitting in the buffer we might take it as a | |
4815 | response to a command, which would be bad. */ | |
5d93a237 | 4816 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4817 | |
4818 | if (from_tty) | |
4819 | { | |
4820 | puts_filtered ("Remote debugging using "); | |
4821 | puts_filtered (name); | |
4822 | puts_filtered ("\n"); | |
4823 | } | |
23860348 | 4824 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4825 | |
74531fed PA |
4826 | /* Register extra event sources in the event loop. */ |
4827 | remote_async_inferior_event_token | |
4828 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4829 | NULL); | |
5965e028 | 4830 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4831 | |
be2a5f71 DJ |
4832 | /* Reset the target state; these things will be queried either by |
4833 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4834 | reset_all_packet_configs_support (); |
74531fed | 4835 | rs->cached_wait_status = 0; |
be2a5f71 | 4836 | rs->explicit_packet_size = 0; |
a6f3e723 | 4837 | rs->noack_mode = 0; |
82f73884 | 4838 | rs->extended = extended_p; |
e24a49d8 | 4839 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4840 | rs->ctrlc_pending_p = 0; |
802188a7 | 4841 | |
47f8a51d TT |
4842 | rs->general_thread = not_sent_ptid; |
4843 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4844 | rs->remote_traceframe_number = -1; |
c906108c | 4845 | |
9d1f7ab2 | 4846 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4847 | rs->use_threadinfo_query = 1; |
4848 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4849 | |
80152258 PA |
4850 | readahead_cache_invalidate (); |
4851 | ||
c6ebd6cf | 4852 | if (target_async_permitted) |
92d1e331 | 4853 | { |
23860348 | 4854 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4855 | remote_async_terminal_ours_p = 1; |
4856 | ||
4857 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4858 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4859 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4860 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4861 | around this. Eventually a mechanism that allows |
92d1e331 | 4862 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4863 | implemented. */ |
92d1e331 DJ |
4864 | wait_forever_enabled_p = 0; |
4865 | } | |
4866 | ||
23860348 | 4867 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4868 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4869 | |
74531fed PA |
4870 | /* Start afresh. */ |
4871 | init_thread_list (); | |
4872 | ||
36918e70 | 4873 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4874 | target (we'd otherwise be in an inconsistent state) and then |
4875 | propogate the error on up the exception chain. This ensures that | |
4876 | the caller doesn't stumble along blindly assuming that the | |
4877 | function succeeded. The CLI doesn't have this problem but other | |
4878 | UI's, such as MI do. | |
36918e70 AC |
4879 | |
4880 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4881 | this function should return an error indication letting the | |
ce2826aa | 4882 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4883 | ``target remote'' is directly wired to this function making that |
4884 | impossible. On a positive note, the CLI side of this problem has | |
4885 | been fixed - the function set_cmd_context() makes it possible for | |
4886 | all the ``target ....'' commands to share a common callback | |
4887 | function. See cli-dump.c. */ | |
109c3e39 | 4888 | { |
2d717e4f | 4889 | |
492d29ea | 4890 | TRY |
04bd08de TT |
4891 | { |
4892 | remote_start_remote (from_tty, target, extended_p); | |
4893 | } | |
492d29ea | 4894 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4895 | { |
c8d104ad PA |
4896 | /* Pop the partially set up target - unless something else did |
4897 | already before throwing the exception. */ | |
5d93a237 | 4898 | if (rs->remote_desc != NULL) |
78a095c3 | 4899 | remote_unpush_target (); |
c6ebd6cf | 4900 | if (target_async_permitted) |
109c3e39 AC |
4901 | wait_forever_enabled_p = 1; |
4902 | throw_exception (ex); | |
4903 | } | |
492d29ea | 4904 | END_CATCH |
109c3e39 | 4905 | } |
c906108c | 4906 | |
f4abbc16 MM |
4907 | remote_btrace_reset (); |
4908 | ||
c6ebd6cf | 4909 | if (target_async_permitted) |
92d1e331 | 4910 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4911 | } |
4912 | ||
de0d863e DB |
4913 | /* Detach the specified process. */ |
4914 | ||
4915 | static void | |
4916 | remote_detach_pid (int pid) | |
4917 | { | |
4918 | struct remote_state *rs = get_remote_state (); | |
4919 | ||
4920 | if (remote_multi_process_p (rs)) | |
4921 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4922 | else | |
4923 | strcpy (rs->buf, "D"); | |
4924 | ||
4925 | putpkt (rs->buf); | |
4926 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4927 | ||
4928 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4929 | ; | |
4930 | else if (rs->buf[0] == '\0') | |
4931 | error (_("Remote doesn't know how to detach")); | |
4932 | else | |
4933 | error (_("Can't detach process.")); | |
4934 | } | |
4935 | ||
4936 | /* This detaches a program to which we previously attached, using | |
4937 | inferior_ptid to identify the process. After this is done, GDB | |
4938 | can be used to debug some other program. We better not have left | |
4939 | any breakpoints in the target program or it'll die when it hits | |
4940 | one. */ | |
c906108c SS |
4941 | |
4942 | static void | |
de0d863e | 4943 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4944 | { |
82f73884 | 4945 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4946 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4947 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4948 | int is_fork_parent; | |
c906108c SS |
4949 | |
4950 | if (args) | |
8a3fe4f8 | 4951 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4952 | |
2d717e4f DJ |
4953 | if (!target_has_execution) |
4954 | error (_("No process to detach from.")); | |
4955 | ||
7cee1e54 PA |
4956 | if (from_tty) |
4957 | { | |
4958 | char *exec_file = get_exec_file (0); | |
4959 | if (exec_file == NULL) | |
4960 | exec_file = ""; | |
4961 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4962 | target_pid_to_str (pid_to_ptid (pid))); | |
4963 | gdb_flush (gdb_stdout); | |
4964 | } | |
4965 | ||
c906108c | 4966 | /* Tell the remote target to detach. */ |
de0d863e | 4967 | remote_detach_pid (pid); |
82f73884 | 4968 | |
de0d863e | 4969 | if (from_tty && !rs->extended) |
7cee1e54 | 4970 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4971 | |
de0d863e DB |
4972 | /* Check to see if we are detaching a fork parent. Note that if we |
4973 | are detaching a fork child, tp == NULL. */ | |
4974 | is_fork_parent = (tp != NULL | |
4975 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4976 | ||
4977 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4978 | breakpoints that should be available for the followed inferior. */ | |
4979 | if (!is_fork_parent) | |
4980 | target_mourn_inferior (); | |
4981 | else | |
4982 | { | |
4983 | inferior_ptid = null_ptid; | |
4984 | detach_inferior (pid); | |
4985 | } | |
2d717e4f DJ |
4986 | } |
4987 | ||
4988 | static void | |
52554a0e | 4989 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4990 | { |
de0d863e | 4991 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4992 | } |
4993 | ||
4994 | static void | |
52554a0e | 4995 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4996 | { |
de0d863e DB |
4997 | remote_detach_1 (args, from_tty); |
4998 | } | |
4999 | ||
5000 | /* Target follow-fork function for remote targets. On entry, and | |
5001 | at return, the current inferior is the fork parent. | |
5002 | ||
5003 | Note that although this is currently only used for extended-remote, | |
5004 | it is named remote_follow_fork in anticipation of using it for the | |
5005 | remote target as well. */ | |
5006 | ||
5007 | static int | |
5008 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5009 | int detach_fork) | |
5010 | { | |
5011 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5012 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5013 | |
c269dbdb DB |
5014 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5015 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5016 | { |
5017 | /* When following the parent and detaching the child, we detach | |
5018 | the child here. For the case of following the child and | |
5019 | detaching the parent, the detach is done in the target- | |
5020 | independent follow fork code in infrun.c. We can't use | |
5021 | target_detach when detaching an unfollowed child because | |
5022 | the client side doesn't know anything about the child. */ | |
5023 | if (detach_fork && !follow_child) | |
5024 | { | |
5025 | /* Detach the fork child. */ | |
5026 | ptid_t child_ptid; | |
5027 | pid_t child_pid; | |
5028 | ||
5029 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5030 | child_pid = ptid_get_pid (child_ptid); | |
5031 | ||
5032 | remote_detach_pid (child_pid); | |
5033 | detach_inferior (child_pid); | |
5034 | } | |
5035 | } | |
5036 | return 0; | |
c906108c SS |
5037 | } |
5038 | ||
94585166 DB |
5039 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5040 | in the program space of the new inferior. On entry and at return the | |
5041 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5042 | inferior, which may be the same as the exec'ing inferior unless | |
5043 | follow-exec-mode is "new". */ | |
5044 | ||
5045 | static void | |
5046 | remote_follow_exec (struct target_ops *ops, | |
5047 | struct inferior *inf, char *execd_pathname) | |
5048 | { | |
5049 | /* We know that this is a target file name, so if it has the "target:" | |
5050 | prefix we strip it off before saving it in the program space. */ | |
5051 | if (is_target_filename (execd_pathname)) | |
5052 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5053 | ||
5054 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5055 | } | |
5056 | ||
6ad8ae5c DJ |
5057 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5058 | ||
43ff13b4 | 5059 | static void |
fee354ee | 5060 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5061 | { |
43ff13b4 | 5062 | if (args) |
2d717e4f | 5063 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5064 | |
2d717e4f | 5065 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 5066 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 5067 | target_mourn_inferior. */ |
20f796c9 | 5068 | remote_mourn (target); |
2d717e4f | 5069 | |
43ff13b4 JM |
5070 | if (from_tty) |
5071 | puts_filtered ("Ending remote debugging.\n"); | |
5072 | } | |
5073 | ||
2d717e4f DJ |
5074 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5075 | be chatty about it. */ | |
5076 | ||
5077 | static void | |
20f796c9 GB |
5078 | extended_remote_attach (struct target_ops *target, const char *args, |
5079 | int from_tty) | |
2d717e4f DJ |
5080 | { |
5081 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5082 | int pid; |
96ef3384 | 5083 | char *wait_status = NULL; |
2d717e4f | 5084 | |
74164c56 | 5085 | pid = parse_pid_to_attach (args); |
2d717e4f | 5086 | |
74164c56 JK |
5087 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5088 | way as in other targets. */ | |
2d717e4f | 5089 | |
4082afcc | 5090 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5091 | error (_("This target does not support attaching to a process")); |
5092 | ||
7cee1e54 PA |
5093 | if (from_tty) |
5094 | { | |
5095 | char *exec_file = get_exec_file (0); | |
5096 | ||
5097 | if (exec_file) | |
5098 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5099 | target_pid_to_str (pid_to_ptid (pid))); | |
5100 | else | |
5101 | printf_unfiltered (_("Attaching to %s\n"), | |
5102 | target_pid_to_str (pid_to_ptid (pid))); | |
5103 | ||
5104 | gdb_flush (gdb_stdout); | |
5105 | } | |
5106 | ||
bba74b36 | 5107 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5108 | putpkt (rs->buf); |
5109 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5110 | ||
4082afcc PA |
5111 | switch (packet_ok (rs->buf, |
5112 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5113 | { |
4082afcc | 5114 | case PACKET_OK: |
6efcd9a8 | 5115 | if (!target_is_non_stop_p ()) |
74531fed PA |
5116 | { |
5117 | /* Save the reply for later. */ | |
224c3ddb | 5118 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5119 | strcpy (wait_status, rs->buf); |
5120 | } | |
5121 | else if (strcmp (rs->buf, "OK") != 0) | |
5122 | error (_("Attaching to %s failed with: %s"), | |
5123 | target_pid_to_str (pid_to_ptid (pid)), | |
5124 | rs->buf); | |
4082afcc PA |
5125 | break; |
5126 | case PACKET_UNKNOWN: | |
5127 | error (_("This target does not support attaching to a process")); | |
5128 | default: | |
5129 | error (_("Attaching to %s failed"), | |
5130 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5131 | } |
2d717e4f | 5132 | |
1b6e6f5c | 5133 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5134 | |
2d717e4f | 5135 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5136 | |
6efcd9a8 | 5137 | if (target_is_non_stop_p ()) |
bad34192 PA |
5138 | { |
5139 | struct thread_info *thread; | |
79d7f229 | 5140 | |
bad34192 | 5141 | /* Get list of threads. */ |
e8032dde | 5142 | remote_update_thread_list (target); |
82f73884 | 5143 | |
bad34192 PA |
5144 | thread = first_thread_of_process (pid); |
5145 | if (thread) | |
5146 | inferior_ptid = thread->ptid; | |
5147 | else | |
5148 | inferior_ptid = pid_to_ptid (pid); | |
5149 | ||
5150 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5151 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5152 | } |
74531fed | 5153 | else |
bad34192 PA |
5154 | { |
5155 | /* Now, if we have thread information, update inferior_ptid. */ | |
5156 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5157 | ||
5158 | /* Add the main thread to the thread list. */ | |
5159 | add_thread_silent (inferior_ptid); | |
5160 | } | |
c0a2216e | 5161 | |
96ef3384 UW |
5162 | /* Next, if the target can specify a description, read it. We do |
5163 | this before anything involving memory or registers. */ | |
5164 | target_find_description (); | |
5165 | ||
6efcd9a8 | 5166 | if (!target_is_non_stop_p ()) |
74531fed PA |
5167 | { |
5168 | /* Use the previously fetched status. */ | |
5169 | gdb_assert (wait_status != NULL); | |
5170 | ||
5171 | if (target_can_async_p ()) | |
5172 | { | |
722247f1 YQ |
5173 | struct notif_event *reply |
5174 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5175 | |
722247f1 | 5176 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5177 | |
6a3753b3 | 5178 | target_async (1); |
74531fed PA |
5179 | } |
5180 | else | |
5181 | { | |
5182 | gdb_assert (wait_status != NULL); | |
5183 | strcpy (rs->buf, wait_status); | |
5184 | rs->cached_wait_status = 1; | |
5185 | } | |
5186 | } | |
5187 | else | |
5188 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5189 | } |
5190 | ||
b9c1d481 AS |
5191 | /* Implementation of the to_post_attach method. */ |
5192 | ||
5193 | static void | |
5194 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5195 | { | |
6efcd9a8 PA |
5196 | /* Get text, data & bss offsets. */ |
5197 | get_offsets (); | |
5198 | ||
b9c1d481 AS |
5199 | /* In certain cases GDB might not have had the chance to start |
5200 | symbol lookup up until now. This could happen if the debugged | |
5201 | binary is not using shared libraries, the vsyscall page is not | |
5202 | present (on Linux) and the binary itself hadn't changed since the | |
5203 | debugging process was started. */ | |
5204 | if (symfile_objfile != NULL) | |
5205 | remote_check_symbols(); | |
5206 | } | |
5207 | ||
c906108c | 5208 | \f |
506fb367 DJ |
5209 | /* Check for the availability of vCont. This function should also check |
5210 | the response. */ | |
c906108c SS |
5211 | |
5212 | static void | |
6d820c5c | 5213 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5214 | { |
2e9f7625 | 5215 | char *buf; |
6d820c5c | 5216 | |
2e9f7625 DJ |
5217 | strcpy (rs->buf, "vCont?"); |
5218 | putpkt (rs->buf); | |
6d820c5c | 5219 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5220 | buf = rs->buf; |
c906108c | 5221 | |
506fb367 | 5222 | /* Make sure that the features we assume are supported. */ |
61012eef | 5223 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5224 | { |
5225 | char *p = &buf[5]; | |
750ce8d1 | 5226 | int support_c, support_C; |
506fb367 | 5227 | |
750ce8d1 YQ |
5228 | rs->supports_vCont.s = 0; |
5229 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5230 | support_c = 0; |
5231 | support_C = 0; | |
d458bd84 | 5232 | rs->supports_vCont.t = 0; |
c1e36e3e | 5233 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5234 | while (p && *p == ';') |
5235 | { | |
5236 | p++; | |
5237 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5238 | rs->supports_vCont.s = 1; |
506fb367 | 5239 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5240 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5241 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5242 | support_c = 1; | |
5243 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5244 | support_C = 1; | |
74531fed | 5245 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5246 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5247 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5248 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5249 | |
5250 | p = strchr (p, ';'); | |
5251 | } | |
c906108c | 5252 | |
750ce8d1 YQ |
5253 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5254 | BUF will make packet_ok disable the packet. */ | |
5255 | if (!support_c || !support_C) | |
506fb367 DJ |
5256 | buf[0] = 0; |
5257 | } | |
c906108c | 5258 | |
444abaca | 5259 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5260 | } |
c906108c | 5261 | |
0d8f58ca PA |
5262 | /* Helper function for building "vCont" resumptions. Write a |
5263 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5264 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5265 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5266 | resumed thread should be single-stepped and/or signalled. If PTID | |
5267 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5268 | represents a process, then all threads of the process are resumed; | |
5269 | the thread to be stepped and/or signalled is given in the global | |
5270 | INFERIOR_PTID. */ | |
5271 | ||
5272 | static char * | |
5273 | append_resumption (char *p, char *endp, | |
2ea28649 | 5274 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5275 | { |
5276 | struct remote_state *rs = get_remote_state (); | |
5277 | ||
a493e3e2 | 5278 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5279 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5280 | else if (step |
5281 | /* GDB is willing to range step. */ | |
5282 | && use_range_stepping | |
5283 | /* Target supports range stepping. */ | |
5284 | && rs->supports_vCont.r | |
5285 | /* We don't currently support range stepping multiple | |
5286 | threads with a wildcard (though the protocol allows it, | |
5287 | so stubs shouldn't make an active effort to forbid | |
5288 | it). */ | |
5289 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5290 | { | |
5291 | struct thread_info *tp; | |
5292 | ||
5293 | if (ptid_equal (ptid, minus_one_ptid)) | |
5294 | { | |
5295 | /* If we don't know about the target thread's tid, then | |
5296 | we're resuming magic_null_ptid (see caller). */ | |
5297 | tp = find_thread_ptid (magic_null_ptid); | |
5298 | } | |
5299 | else | |
5300 | tp = find_thread_ptid (ptid); | |
5301 | gdb_assert (tp != NULL); | |
5302 | ||
5303 | if (tp->control.may_range_step) | |
5304 | { | |
5305 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5306 | ||
5307 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5308 | phex_nz (tp->control.step_range_start, | |
5309 | addr_size), | |
5310 | phex_nz (tp->control.step_range_end, | |
5311 | addr_size)); | |
5312 | } | |
5313 | else | |
5314 | p += xsnprintf (p, endp - p, ";s"); | |
5315 | } | |
0d8f58ca PA |
5316 | else if (step) |
5317 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5318 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5319 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5320 | else | |
5321 | p += xsnprintf (p, endp - p, ";c"); | |
5322 | ||
5323 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5324 | { | |
5325 | ptid_t nptid; | |
5326 | ||
5327 | /* All (-1) threads of process. */ | |
ba348170 | 5328 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5329 | |
5330 | p += xsnprintf (p, endp - p, ":"); | |
5331 | p = write_ptid (p, endp, nptid); | |
5332 | } | |
5333 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5334 | { | |
5335 | p += xsnprintf (p, endp - p, ":"); | |
5336 | p = write_ptid (p, endp, ptid); | |
5337 | } | |
5338 | ||
5339 | return p; | |
5340 | } | |
5341 | ||
799a2abe PA |
5342 | /* Clear the thread's private info on resume. */ |
5343 | ||
5344 | static void | |
5345 | resume_clear_thread_private_info (struct thread_info *thread) | |
5346 | { | |
5347 | if (thread->priv != NULL) | |
5348 | { | |
5349 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5350 | thread->priv->watch_data_address = 0; | |
5351 | } | |
5352 | } | |
5353 | ||
e5ef252a PA |
5354 | /* Append a vCont continue-with-signal action for threads that have a |
5355 | non-zero stop signal. */ | |
5356 | ||
5357 | static char * | |
5358 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5359 | { | |
5360 | struct thread_info *thread; | |
5361 | ||
034f788c | 5362 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5363 | if (ptid_match (thread->ptid, ptid) |
5364 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5365 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5366 | { |
5367 | p = append_resumption (p, endp, thread->ptid, | |
5368 | 0, thread->suspend.stop_signal); | |
5369 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5370 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5371 | } |
5372 | ||
5373 | return p; | |
5374 | } | |
5375 | ||
506fb367 DJ |
5376 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5377 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5378 | resumed thread should be single-stepped and/or signalled. If PTID |
5379 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5380 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5381 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5382 | |
506fb367 DJ |
5383 | This function issues a strict subset of all possible vCont commands at the |
5384 | moment. */ | |
44eaed12 | 5385 | |
506fb367 | 5386 | static int |
2ea28649 | 5387 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5388 | { |
5389 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5390 | char *p; |
5391 | char *endp; | |
44eaed12 | 5392 | |
4082afcc | 5393 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5394 | remote_vcont_probe (rs); |
44eaed12 | 5395 | |
4082afcc | 5396 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5397 | return 0; |
44eaed12 | 5398 | |
82f73884 PA |
5399 | p = rs->buf; |
5400 | endp = rs->buf + get_remote_packet_size (); | |
5401 | ||
506fb367 DJ |
5402 | /* If we could generate a wider range of packets, we'd have to worry |
5403 | about overflowing BUF. Should there be a generic | |
5404 | "multi-part-packet" packet? */ | |
5405 | ||
0d8f58ca PA |
5406 | p += xsnprintf (p, endp - p, "vCont"); |
5407 | ||
79d7f229 | 5408 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5409 | { |
79d7f229 PA |
5410 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5411 | so we don't have any TID numbers the inferior will | |
5412 | understand. Make sure to only send forms that do not specify | |
5413 | a TID. */ | |
a9cbf802 | 5414 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5415 | } |
0d8f58ca | 5416 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5417 | { |
0d8f58ca PA |
5418 | /* Resume all threads (of all processes, or of a single |
5419 | process), with preference for INFERIOR_PTID. This assumes | |
5420 | inferior_ptid belongs to the set of all threads we are about | |
5421 | to resume. */ | |
a493e3e2 | 5422 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5423 | { |
0d8f58ca PA |
5424 | /* Step inferior_ptid, with or without signal. */ |
5425 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5426 | } |
0d8f58ca | 5427 | |
e5ef252a PA |
5428 | /* Also pass down any pending signaled resumption for other |
5429 | threads not the current. */ | |
5430 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5431 | ||
0d8f58ca | 5432 | /* And continue others without a signal. */ |
a493e3e2 | 5433 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5434 | } |
5435 | else | |
506fb367 DJ |
5436 | { |
5437 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5438 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5439 | } |
c906108c | 5440 | |
82f73884 PA |
5441 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5442 | putpkt (rs->buf); | |
506fb367 | 5443 | |
6efcd9a8 | 5444 | if (target_is_non_stop_p ()) |
74531fed PA |
5445 | { |
5446 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5447 | reply will be reported asynchronously by means of a `%Stop' | |
5448 | notification. */ | |
5449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5450 | if (strcmp (rs->buf, "OK") != 0) | |
5451 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5452 | } | |
5453 | ||
506fb367 | 5454 | return 1; |
c906108c | 5455 | } |
43ff13b4 | 5456 | |
506fb367 DJ |
5457 | /* Tell the remote machine to resume. */ |
5458 | ||
43ff13b4 | 5459 | static void |
28439f5e | 5460 | remote_resume (struct target_ops *ops, |
2ea28649 | 5461 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5462 | { |
d01949b6 | 5463 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5464 | char *buf; |
799a2abe | 5465 | struct thread_info *thread; |
43ff13b4 | 5466 | |
722247f1 YQ |
5467 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5468 | (explained in remote-notif.c:handle_notification) so | |
5469 | remote_notif_process is not called. We need find a place where | |
5470 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5471 | before resuming inferior, because inferior was stopped and no RSP | |
5472 | traffic at that moment. */ | |
6efcd9a8 | 5473 | if (!target_is_non_stop_p ()) |
5965e028 | 5474 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5475 | |
b73be471 | 5476 | rs->last_sent_signal = siggnal; |
280ceea3 | 5477 | rs->last_sent_step = step; |
43ff13b4 | 5478 | |
506fb367 | 5479 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5480 | /* No reverse support (yet) for vCont. */ |
5481 | if (execution_direction != EXEC_REVERSE) | |
5482 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5483 | goto done; | |
506fb367 | 5484 | |
79d7f229 PA |
5485 | /* All other supported resume packets do use Hc, so set the continue |
5486 | thread. */ | |
5487 | if (ptid_equal (ptid, minus_one_ptid)) | |
5488 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5489 | else |
79d7f229 | 5490 | set_continue_thread (ptid); |
506fb367 | 5491 | |
799a2abe PA |
5492 | ALL_NON_EXITED_THREADS (thread) |
5493 | resume_clear_thread_private_info (thread); | |
5494 | ||
2e9f7625 | 5495 | buf = rs->buf; |
b2175913 MS |
5496 | if (execution_direction == EXEC_REVERSE) |
5497 | { | |
5498 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5499 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5500 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5501 | siggnal); |
40ab02ce | 5502 | |
4082afcc | 5503 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5504 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5505 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5506 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5507 | |
b2175913 MS |
5508 | strcpy (buf, step ? "bs" : "bc"); |
5509 | } | |
a493e3e2 | 5510 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5511 | { |
5512 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5513 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5514 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5515 | buf[3] = '\0'; |
5516 | } | |
5517 | else | |
c5aa993b | 5518 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5519 | |
44eaed12 | 5520 | putpkt (buf); |
43ff13b4 | 5521 | |
75c99385 | 5522 | done: |
2acceee2 | 5523 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5524 | with the event loop. NOTE: this is the one place where all the |
5525 | execution commands end up. We could alternatively do this in each | |
23860348 | 5526 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5527 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5528 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5529 | NOT asynchronously. */ |
362646f5 | 5530 | if (target_can_async_p ()) |
6a3753b3 | 5531 | target_async (1); |
e24a49d8 PA |
5532 | |
5533 | /* We've just told the target to resume. The remote server will | |
5534 | wait for the inferior to stop, and then send a stop reply. In | |
5535 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5536 | because the stub wouldn't be ready to process it. This applies |
5537 | only to the base all-stop protocol, however. In non-stop (which | |
5538 | only supports vCont), the stub replies with an "OK", and is | |
5539 | immediate able to process further serial input. */ | |
6efcd9a8 | 5540 | if (!target_is_non_stop_p ()) |
74531fed | 5541 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5542 | } |
c906108c | 5543 | \f |
43ff13b4 JM |
5544 | |
5545 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5546 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5547 | static void |
934b9bac | 5548 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5549 | { |
934b9bac | 5550 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5551 | } |
5552 | ||
23860348 | 5553 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5554 | static void |
934b9bac | 5555 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5556 | { |
934b9bac | 5557 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5558 | /* Note we need to go through gdb_call_async_signal_handler in order |
5559 | to wake up the event loop on Windows. */ | |
5560 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5561 | } |
5562 | ||
5563 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5564 | sent once. It will take effect the second time that the user sends | |
23860348 | 5565 | a ^C. */ |
43ff13b4 | 5566 | static void |
934b9bac | 5567 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5568 | { |
934b9bac | 5569 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5570 | /* See note in async_handle_remote_sigint. */ |
5571 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5572 | } |
5573 | ||
abc56d60 PA |
5574 | /* Implementation of to_check_pending_interrupt. */ |
5575 | ||
5576 | static void | |
5577 | remote_check_pending_interrupt (struct target_ops *self) | |
5578 | { | |
5579 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5580 | ||
5581 | if (async_signal_handler_is_marked (token)) | |
5582 | { | |
5583 | clear_async_signal_handler (token); | |
5584 | call_async_signal_handler (token); | |
5585 | } | |
5586 | } | |
5587 | ||
6426a772 | 5588 | /* Perform the real interruption of the target execution, in response |
23860348 | 5589 | to a ^C. */ |
c5aa993b | 5590 | static void |
fba45db2 | 5591 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5592 | { |
5593 | if (remote_debug) | |
248fd3bf | 5594 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5595 | |
de979965 | 5596 | target_interrupt (inferior_ptid); |
43ff13b4 JM |
5597 | } |
5598 | ||
0df8b418 | 5599 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5600 | up on the target alltogether. */ |
47e1ce27 | 5601 | static void |
fba45db2 | 5602 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5603 | { |
2df3850c | 5604 | if (remote_debug) |
248fd3bf | 5605 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5606 | |
5607 | interrupt_query (); | |
43ff13b4 JM |
5608 | } |
5609 | ||
5610 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5611 | stopped. */ |
6426a772 | 5612 | static void |
934b9bac | 5613 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5614 | { |
5615 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5616 | } |
5617 | ||
c906108c SS |
5618 | /* Send ^C to target to halt it. Target will respond, and send us a |
5619 | packet. */ | |
507f3c78 | 5620 | static void (*ofunc) (int); |
c906108c | 5621 | |
bfedc46a PA |
5622 | /* The command line interface's interrupt routine. This function is installed |
5623 | as a signal handler for SIGINT. The first time a user requests an | |
5624 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5625 | response from the target (it didn't stop when the user requested it), |
23860348 | 5626 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5627 | |
c906108c | 5628 | static void |
934b9bac | 5629 | sync_remote_interrupt (int signo) |
c906108c | 5630 | { |
23860348 | 5631 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5632 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5633 | |
934b9bac | 5634 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5635 | } |
5636 | ||
5637 | /* The user typed ^C twice. */ | |
5638 | ||
5639 | static void | |
934b9bac | 5640 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5641 | { |
5642 | signal (signo, ofunc); | |
934b9bac JK |
5643 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5644 | signal (signo, sync_remote_interrupt); | |
c906108c | 5645 | } |
7a292a7a | 5646 | |
74531fed PA |
5647 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5648 | thread, all threads of a remote process, or all threads of all | |
5649 | processes. */ | |
5650 | ||
5651 | static void | |
5652 | remote_stop_ns (ptid_t ptid) | |
5653 | { | |
5654 | struct remote_state *rs = get_remote_state (); | |
5655 | char *p = rs->buf; | |
5656 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5657 | |
4082afcc | 5658 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5659 | remote_vcont_probe (rs); |
5660 | ||
d458bd84 | 5661 | if (!rs->supports_vCont.t) |
74531fed PA |
5662 | error (_("Remote server does not support stopping threads")); |
5663 | ||
f91d3df5 PA |
5664 | if (ptid_equal (ptid, minus_one_ptid) |
5665 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5666 | p += xsnprintf (p, endp - p, "vCont;t"); |
5667 | else | |
5668 | { | |
5669 | ptid_t nptid; | |
5670 | ||
74531fed PA |
5671 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5672 | ||
5673 | if (ptid_is_pid (ptid)) | |
5674 | /* All (-1) threads of process. */ | |
ba348170 | 5675 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5676 | else |
5677 | { | |
5678 | /* Small optimization: if we already have a stop reply for | |
5679 | this thread, no use in telling the stub we want this | |
5680 | stopped. */ | |
5681 | if (peek_stop_reply (ptid)) | |
5682 | return; | |
5683 | ||
5684 | nptid = ptid; | |
5685 | } | |
5686 | ||
a9cbf802 | 5687 | write_ptid (p, endp, nptid); |
74531fed PA |
5688 | } |
5689 | ||
5690 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5691 | come in asynchronously by notification. */ | |
5692 | putpkt (rs->buf); | |
5693 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5694 | if (strcmp (rs->buf, "OK") != 0) | |
5695 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5696 | } | |
5697 | ||
bfedc46a PA |
5698 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5699 | interrupt the remote target. It is undefined which thread of which | |
5700 | process reports the interrupt. */ | |
74531fed PA |
5701 | |
5702 | static void | |
de979965 | 5703 | remote_interrupt_as (void) |
74531fed PA |
5704 | { |
5705 | struct remote_state *rs = get_remote_state (); | |
5706 | ||
3a29589a DJ |
5707 | rs->ctrlc_pending_p = 1; |
5708 | ||
74531fed PA |
5709 | /* If the inferior is stopped already, but the core didn't know |
5710 | about it yet, just ignore the request. The cached wait status | |
5711 | will be collected in remote_wait. */ | |
5712 | if (rs->cached_wait_status) | |
5713 | return; | |
5714 | ||
9a7071a8 JB |
5715 | /* Send interrupt_sequence to remote target. */ |
5716 | send_interrupt_sequence (); | |
74531fed PA |
5717 | } |
5718 | ||
de979965 PA |
5719 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
5720 | the remote target. It is undefined which thread of which process | |
5721 | reports the interrupt. Returns true if the packet is supported by | |
5722 | the server, false otherwise. */ | |
5723 | ||
5724 | static int | |
5725 | remote_interrupt_ns (void) | |
5726 | { | |
5727 | struct remote_state *rs = get_remote_state (); | |
5728 | char *p = rs->buf; | |
5729 | char *endp = rs->buf + get_remote_packet_size (); | |
5730 | ||
5731 | xsnprintf (p, endp - p, "vCtrlC"); | |
5732 | ||
5733 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5734 | come in asynchronously by notification. */ | |
5735 | putpkt (rs->buf); | |
5736 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5737 | ||
5738 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
5739 | { | |
5740 | case PACKET_OK: | |
5741 | break; | |
5742 | case PACKET_UNKNOWN: | |
5743 | return 0; | |
5744 | case PACKET_ERROR: | |
5745 | error (_("Interrupting target failed: %s"), rs->buf); | |
5746 | } | |
5747 | ||
5748 | return 1; | |
5749 | } | |
5750 | ||
bfedc46a | 5751 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5752 | |
c906108c | 5753 | static void |
1eab8a48 | 5754 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5755 | { |
7a292a7a | 5756 | if (remote_debug) |
0f71a2f6 | 5757 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5758 | |
6efcd9a8 | 5759 | if (target_is_non_stop_p ()) |
74531fed | 5760 | remote_stop_ns (ptid); |
c906108c | 5761 | else |
bfedc46a PA |
5762 | { |
5763 | /* We don't currently have a way to transparently pause the | |
5764 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 5765 | remote_interrupt_as (); |
bfedc46a PA |
5766 | } |
5767 | } | |
5768 | ||
5769 | /* Implement the to_interrupt function for the remote targets. */ | |
5770 | ||
5771 | static void | |
5772 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5773 | { | |
5774 | if (remote_debug) | |
5775 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5776 | ||
de979965 | 5777 | if (non_stop) |
bfedc46a | 5778 | { |
de979965 | 5779 | /* In non-stop mode, we always stop with no signal instead. */ |
bfedc46a PA |
5780 | remote_stop_ns (ptid); |
5781 | } | |
5782 | else | |
de979965 PA |
5783 | { |
5784 | /* In all-stop, we emulate ^C-ing the remote target's | |
5785 | terminal. */ | |
5786 | if (target_is_non_stop_p ()) | |
5787 | { | |
5788 | if (!remote_interrupt_ns ()) | |
5789 | { | |
5790 | /* No support for ^C-ing the remote target. Stop it | |
5791 | (with no signal) instead. */ | |
5792 | remote_stop_ns (ptid); | |
5793 | } | |
5794 | } | |
5795 | else | |
5796 | remote_interrupt_as (); | |
5797 | } | |
c906108c SS |
5798 | } |
5799 | ||
5800 | /* Ask the user what to do when an interrupt is received. */ | |
5801 | ||
5802 | static void | |
fba45db2 | 5803 | interrupt_query (void) |
c906108c | 5804 | { |
abc56d60 PA |
5805 | struct remote_state *rs = get_remote_state (); |
5806 | struct cleanup *old_chain; | |
5807 | ||
5808 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5809 | target_terminal_ours (); |
5810 | ||
abc56d60 | 5811 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5812 | { |
abc56d60 PA |
5813 | if (query (_("The target is not responding to interrupt requests.\n" |
5814 | "Stop debugging it? "))) | |
74531fed | 5815 | { |
78a095c3 | 5816 | remote_unpush_target (); |
abc56d60 | 5817 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5818 | } |
5819 | } | |
abc56d60 PA |
5820 | else |
5821 | { | |
5822 | if (query (_("Interrupted while waiting for the program.\n" | |
5823 | "Give up waiting? "))) | |
5824 | quit (); | |
5825 | } | |
c906108c | 5826 | |
abc56d60 | 5827 | do_cleanups (old_chain); |
c906108c SS |
5828 | } |
5829 | ||
6426a772 JM |
5830 | /* Enable/disable target terminal ownership. Most targets can use |
5831 | terminal groups to control terminal ownership. Remote targets are | |
5832 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5833 | is required. */ |
6426a772 JM |
5834 | |
5835 | static void | |
d2f640d4 | 5836 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5837 | { |
c6ebd6cf | 5838 | if (!target_async_permitted) |
75c99385 PA |
5839 | /* Nothing to do. */ |
5840 | return; | |
5841 | ||
d9d2d8b6 PA |
5842 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5843 | idempotent. The event-loop GDB talking to an asynchronous target | |
5844 | with a synchronous command calls this function from both | |
5845 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5846 | transfer the terminal to the target when it shouldn't this guard | |
5847 | can go away. */ | |
6426a772 JM |
5848 | if (!remote_async_terminal_ours_p) |
5849 | return; | |
5850 | delete_file_handler (input_fd); | |
5851 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5852 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5853 | /* NOTE: At this point we could also register our selves as the |
5854 | recipient of all input. Any characters typed could then be | |
23860348 | 5855 | passed on down to the target. */ |
6426a772 JM |
5856 | } |
5857 | ||
5858 | static void | |
e3594fd1 | 5859 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5860 | { |
c6ebd6cf | 5861 | if (!target_async_permitted) |
75c99385 PA |
5862 | /* Nothing to do. */ |
5863 | return; | |
5864 | ||
5865 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5866 | if (remote_async_terminal_ours_p) |
5867 | return; | |
934b9bac | 5868 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5869 | add_file_handler (input_fd, stdin_event_handler, 0); |
5870 | remote_async_terminal_ours_p = 1; | |
5871 | } | |
5872 | ||
176a6961 | 5873 | static void |
917317f4 | 5874 | remote_console_output (char *msg) |
c906108c SS |
5875 | { |
5876 | char *p; | |
5877 | ||
c5aa993b | 5878 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5879 | { |
5880 | char tb[2]; | |
5881 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5882 | |
c906108c SS |
5883 | tb[0] = c; |
5884 | tb[1] = 0; | |
43ff13b4 | 5885 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5886 | } |
00db5b94 PA |
5887 | gdb_flush (gdb_stdtarg); |
5888 | } | |
74531fed PA |
5889 | |
5890 | typedef struct cached_reg | |
5891 | { | |
5892 | int num; | |
5893 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5894 | } cached_reg_t; | |
5895 | ||
5896 | DEF_VEC_O(cached_reg_t); | |
5897 | ||
722247f1 | 5898 | typedef struct stop_reply |
74531fed | 5899 | { |
722247f1 | 5900 | struct notif_event base; |
74531fed | 5901 | |
722247f1 | 5902 | /* The identifier of the thread about this event */ |
74531fed PA |
5903 | ptid_t ptid; |
5904 | ||
340e3c99 | 5905 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5906 | connection, represented by a remote_state object, is closed, |
5907 | all the associated stop_reply events should be released. */ | |
5908 | struct remote_state *rs; | |
5909 | ||
74531fed PA |
5910 | struct target_waitstatus ws; |
5911 | ||
15148d6a PA |
5912 | /* Expedited registers. This makes remote debugging a bit more |
5913 | efficient for those targets that provide critical registers as | |
5914 | part of their normal status mechanism (as another roundtrip to | |
5915 | fetch them is avoided). */ | |
74531fed PA |
5916 | VEC(cached_reg_t) *regcache; |
5917 | ||
f7e6eed5 PA |
5918 | enum target_stop_reason stop_reason; |
5919 | ||
74531fed PA |
5920 | CORE_ADDR watch_data_address; |
5921 | ||
dc146f7c | 5922 | int core; |
722247f1 | 5923 | } *stop_reply_p; |
a744cf53 | 5924 | |
722247f1 YQ |
5925 | DECLARE_QUEUE_P (stop_reply_p); |
5926 | DEFINE_QUEUE_P (stop_reply_p); | |
5927 | /* The list of already fetched and acknowledged stop events. This | |
5928 | queue is used for notification Stop, and other notifications | |
5929 | don't need queue for their events, because the notification events | |
5930 | of Stop can't be consumed immediately, so that events should be | |
5931 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5932 | time. Other notifications can consume their events immediately, | |
5933 | so queue is not needed for them. */ | |
5934 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5935 | |
5936 | static void | |
5937 | stop_reply_xfree (struct stop_reply *r) | |
5938 | { | |
f48ff2a7 | 5939 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5940 | } |
5941 | ||
221e1a37 PA |
5942 | /* Return the length of the stop reply queue. */ |
5943 | ||
5944 | static int | |
5945 | stop_reply_queue_length (void) | |
5946 | { | |
5947 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
5948 | } | |
5949 | ||
722247f1 YQ |
5950 | static void |
5951 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5952 | struct notif_event *event) | |
5953 | { | |
5954 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5955 | } | |
5956 | ||
5957 | static void | |
5958 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5959 | struct notif_event *event) | |
5960 | { | |
5961 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5962 | ||
5963 | /* acknowledge */ | |
5964 | putpkt ((char *) self->ack_command); | |
5965 | ||
5966 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5967 | /* We got an unknown stop reply. */ | |
5968 | error (_("Unknown stop reply")); | |
5969 | ||
5970 | push_stop_reply (stop_reply); | |
5971 | } | |
5972 | ||
5973 | static int | |
5974 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5975 | { | |
5976 | /* We can't get pending events in remote_notif_process for | |
5977 | notification stop, and we have to do this in remote_wait_ns | |
5978 | instead. If we fetch all queued events from stub, remote stub | |
5979 | may exit and we have no chance to process them back in | |
5980 | remote_wait_ns. */ | |
5981 | mark_async_event_handler (remote_async_inferior_event_token); | |
5982 | return 0; | |
5983 | } | |
5984 | ||
5985 | static void | |
5986 | stop_reply_dtr (struct notif_event *event) | |
5987 | { | |
5988 | struct stop_reply *r = (struct stop_reply *) event; | |
5989 | ||
5990 | VEC_free (cached_reg_t, r->regcache); | |
5991 | } | |
5992 | ||
5993 | static struct notif_event * | |
5994 | remote_notif_stop_alloc_reply (void) | |
5995 | { | |
8d749320 SM |
5996 | /* We cast to a pointer to the "base class". */ |
5997 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
5998 | |
5999 | r->dtr = stop_reply_dtr; | |
6000 | ||
6001 | return r; | |
6002 | } | |
6003 | ||
6004 | /* A client of notification Stop. */ | |
6005 | ||
6006 | struct notif_client notif_client_stop = | |
6007 | { | |
6008 | "Stop", | |
6009 | "vStopped", | |
6010 | remote_notif_stop_parse, | |
6011 | remote_notif_stop_ack, | |
6012 | remote_notif_stop_can_get_pending_events, | |
6013 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6014 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6015 | }; |
6016 | ||
6017 | /* A parameter to pass data in and out. */ | |
6018 | ||
6019 | struct queue_iter_param | |
6020 | { | |
6021 | void *input; | |
6022 | struct stop_reply *output; | |
6023 | }; | |
6024 | ||
cbb8991c DB |
6025 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
6026 | the pid of the process that owns the threads we want to check, or | |
6027 | -1 if we want to check all threads. */ | |
6028 | ||
6029 | static int | |
6030 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6031 | ptid_t thread_ptid) | |
6032 | { | |
6033 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6034 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6035 | { | |
6036 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6037 | return 1; | |
6038 | } | |
6039 | ||
6040 | return 0; | |
6041 | } | |
6042 | ||
6043 | /* Check whether EVENT is a fork event, and if it is, remove the | |
6044 | fork child from the context list passed in DATA. */ | |
6045 | ||
6046 | static int | |
6047 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6048 | QUEUE_ITER (stop_reply_p) *iter, | |
6049 | stop_reply_p event, | |
6050 | void *data) | |
6051 | { | |
19ba03f4 SM |
6052 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6053 | struct threads_listing_context *context | |
6054 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6055 | |
6056 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6057 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6058 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6059 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6060 | |
6061 | return 1; | |
6062 | } | |
6063 | ||
6064 | /* If CONTEXT contains any fork child threads that have not been | |
6065 | reported yet, remove them from the CONTEXT list. If such a | |
6066 | thread exists it is because we are stopped at a fork catchpoint | |
6067 | and have not yet called follow_fork, which will set up the | |
6068 | host-side data structures for the new process. */ | |
6069 | ||
6070 | static void | |
6071 | remove_new_fork_children (struct threads_listing_context *context) | |
6072 | { | |
6073 | struct thread_info * thread; | |
6074 | int pid = -1; | |
6075 | struct notif_client *notif = ¬if_client_stop; | |
6076 | struct queue_iter_param param; | |
6077 | ||
6078 | /* For any threads stopped at a fork event, remove the corresponding | |
6079 | fork child threads from the CONTEXT list. */ | |
6080 | ALL_NON_EXITED_THREADS (thread) | |
6081 | { | |
6082 | struct target_waitstatus *ws = &thread->pending_follow; | |
6083 | ||
6084 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6085 | { | |
6086 | threads_listing_context_remove (ws, context); | |
6087 | } | |
6088 | } | |
6089 | ||
6090 | /* Check for any pending fork events (not reported or processed yet) | |
6091 | in process PID and remove those fork child threads from the | |
6092 | CONTEXT list as well. */ | |
6093 | remote_notif_get_pending_events (notif); | |
6094 | param.input = context; | |
6095 | param.output = NULL; | |
6096 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6097 | remove_child_of_pending_fork, ¶m); | |
6098 | } | |
6099 | ||
f48ff2a7 YQ |
6100 | /* Remove stop replies in the queue if its pid is equal to the given |
6101 | inferior's pid. */ | |
722247f1 YQ |
6102 | |
6103 | static int | |
f48ff2a7 YQ |
6104 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6105 | QUEUE_ITER (stop_reply_p) *iter, | |
6106 | stop_reply_p event, | |
6107 | void *data) | |
722247f1 | 6108 | { |
19ba03f4 SM |
6109 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6110 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6111 | |
f48ff2a7 | 6112 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6113 | { |
6114 | stop_reply_xfree (event); | |
6115 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6116 | } | |
6117 | ||
6118 | return 1; | |
6119 | } | |
6120 | ||
f48ff2a7 | 6121 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6122 | |
74531fed | 6123 | static void |
5f4cf0bb | 6124 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6125 | { |
722247f1 YQ |
6126 | int i; |
6127 | struct queue_iter_param param; | |
f48ff2a7 YQ |
6128 | struct stop_reply *reply; |
6129 | struct remote_state *rs = get_remote_state (); | |
6130 | struct remote_notif_state *rns = rs->notif_state; | |
6131 | ||
6132 | /* This function can be notified when an inferior exists. When the | |
6133 | target is not remote, the notification state is NULL. */ | |
6134 | if (rs->remote_desc == NULL) | |
6135 | return; | |
6136 | ||
6137 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6138 | |
74531fed | 6139 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6140 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6141 | { |
722247f1 | 6142 | stop_reply_xfree (reply); |
f48ff2a7 | 6143 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6144 | } |
c906108c | 6145 | |
722247f1 YQ |
6146 | param.input = inf; |
6147 | param.output = NULL; | |
74531fed PA |
6148 | /* Discard the stop replies we have already pulled with |
6149 | vStopped. */ | |
722247f1 | 6150 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6151 | remove_stop_reply_for_inferior, ¶m); |
6152 | } | |
6153 | ||
bcc75809 YQ |
6154 | /* If its remote state is equal to the given remote state, |
6155 | remove EVENT from the stop reply queue. */ | |
6156 | ||
6157 | static int | |
6158 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6159 | QUEUE_ITER (stop_reply_p) *iter, | |
6160 | stop_reply_p event, | |
6161 | void *data) | |
6162 | { | |
19ba03f4 SM |
6163 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6164 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6165 | |
6166 | if (event->rs == rs) | |
6167 | { | |
6168 | stop_reply_xfree (event); | |
6169 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6170 | } | |
6171 | ||
6172 | return 1; | |
6173 | } | |
6174 | ||
6175 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6176 | |
6177 | static void | |
bcc75809 | 6178 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6179 | { |
6180 | struct queue_iter_param param; | |
6181 | ||
bcc75809 | 6182 | param.input = rs; |
f48ff2a7 YQ |
6183 | param.output = NULL; |
6184 | /* Discard the stop replies we have already pulled with | |
6185 | vStopped. */ | |
6186 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6187 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6188 | } |
74531fed | 6189 | |
722247f1 YQ |
6190 | /* A parameter to pass data in and out. */ |
6191 | ||
6192 | static int | |
6193 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6194 | QUEUE_ITER (stop_reply_p) *iter, | |
6195 | stop_reply_p event, | |
6196 | void *data) | |
6197 | { | |
19ba03f4 SM |
6198 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6199 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6200 | |
6201 | if (ptid_match (event->ptid, *ptid)) | |
6202 | { | |
6203 | param->output = event; | |
6204 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6205 | return 0; | |
c8e38a49 | 6206 | } |
722247f1 YQ |
6207 | |
6208 | return 1; | |
74531fed | 6209 | } |
43ff13b4 | 6210 | |
722247f1 YQ |
6211 | /* Remove the first reply in 'stop_reply_queue' which matches |
6212 | PTID. */ | |
2e9f7625 | 6213 | |
722247f1 YQ |
6214 | static struct stop_reply * |
6215 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6216 | { |
722247f1 YQ |
6217 | struct queue_iter_param param; |
6218 | ||
6219 | param.input = &ptid; | |
6220 | param.output = NULL; | |
6221 | ||
6222 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6223 | remote_notif_remove_once_on_match, ¶m); | |
6224 | if (notif_debug) | |
6225 | fprintf_unfiltered (gdb_stdlog, | |
6226 | "notif: discard queued event: 'Stop' in %s\n", | |
6227 | target_pid_to_str (ptid)); | |
a744cf53 | 6228 | |
722247f1 | 6229 | return param.output; |
74531fed | 6230 | } |
75c99385 | 6231 | |
74531fed PA |
6232 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6233 | remove it from the queue, and return it. Returns NULL if none is | |
6234 | found. If there are still queued events left to process, tell the | |
6235 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6236 | |
74531fed PA |
6237 | static struct stop_reply * |
6238 | queued_stop_reply (ptid_t ptid) | |
6239 | { | |
722247f1 | 6240 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6241 | |
722247f1 | 6242 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6243 | /* There's still at least an event left. */ |
6244 | mark_async_event_handler (remote_async_inferior_event_token); | |
6245 | ||
722247f1 | 6246 | return r; |
74531fed PA |
6247 | } |
6248 | ||
6249 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6250 | know that we now have at least one queued event left to pass to the | |
6251 | core side, tell the event loop to get back to target_wait soon. */ | |
6252 | ||
6253 | static void | |
6254 | push_stop_reply (struct stop_reply *new_event) | |
6255 | { | |
722247f1 | 6256 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6257 | |
722247f1 YQ |
6258 | if (notif_debug) |
6259 | fprintf_unfiltered (gdb_stdlog, | |
6260 | "notif: push 'Stop' %s to queue %d\n", | |
6261 | target_pid_to_str (new_event->ptid), | |
6262 | QUEUE_length (stop_reply_p, | |
6263 | stop_reply_queue)); | |
74531fed PA |
6264 | |
6265 | mark_async_event_handler (remote_async_inferior_event_token); | |
6266 | } | |
6267 | ||
722247f1 YQ |
6268 | static int |
6269 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6270 | QUEUE_ITER (stop_reply_p) *iter, | |
6271 | struct stop_reply *event, | |
6272 | void *data) | |
6273 | { | |
19ba03f4 | 6274 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6275 | |
6276 | return !(ptid_equal (*ptid, event->ptid) | |
6277 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6278 | } | |
6279 | ||
74531fed PA |
6280 | /* Returns true if we have a stop reply for PTID. */ |
6281 | ||
6282 | static int | |
6283 | peek_stop_reply (ptid_t ptid) | |
6284 | { | |
722247f1 YQ |
6285 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6286 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6287 | } |
6288 | ||
1f10ba14 PA |
6289 | /* Skip PACKET until the next semi-colon (or end of string). */ |
6290 | ||
6291 | static char * | |
6292 | skip_to_semicolon (char *p) | |
6293 | { | |
6294 | while (*p != '\0' && *p != ';') | |
6295 | p++; | |
6296 | return p; | |
6297 | } | |
6298 | ||
26d56a93 SL |
6299 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6300 | starting with P and ending with PEND matches PREFIX. */ | |
6301 | ||
6302 | static int | |
6303 | strprefix (const char *p, const char *pend, const char *prefix) | |
6304 | { | |
6305 | for ( ; p < pend; p++, prefix++) | |
6306 | if (*p != *prefix) | |
6307 | return 0; | |
6308 | return *prefix == '\0'; | |
6309 | } | |
6310 | ||
74531fed PA |
6311 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6312 | result is stored in EVENT, or throws an error. */ | |
6313 | ||
6314 | static void | |
6315 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6316 | { | |
6317 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6318 | ULONGEST addr; | |
6319 | char *p; | |
94585166 | 6320 | int skipregs = 0; |
74531fed PA |
6321 | |
6322 | event->ptid = null_ptid; | |
bcc75809 | 6323 | event->rs = get_remote_state (); |
74531fed PA |
6324 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6325 | event->ws.value.integer = 0; | |
f7e6eed5 | 6326 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6327 | event->regcache = NULL; |
dc146f7c | 6328 | event->core = -1; |
74531fed PA |
6329 | |
6330 | switch (buf[0]) | |
6331 | { | |
6332 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6333 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6334 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6335 | ss = signal number | |
6336 | n... = register number | |
6337 | r... = register contents | |
6338 | */ | |
6339 | ||
6340 | p = &buf[3]; /* after Txx */ | |
6341 | while (*p) | |
6342 | { | |
6343 | char *p1; | |
cea39f65 | 6344 | int fieldsize; |
43ff13b4 | 6345 | |
1f10ba14 PA |
6346 | p1 = strchr (p, ':'); |
6347 | if (p1 == NULL) | |
6348 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6349 | Packet: '%s'\n"), | |
6350 | p, buf); | |
6351 | if (p == p1) | |
6352 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6353 | Packet: '%s'\n"), | |
6354 | p, buf); | |
3c3bea1c | 6355 | |
1f10ba14 PA |
6356 | /* Some "registers" are actually extended stop information. |
6357 | Note if you're adding a new entry here: GDB 7.9 and | |
6358 | earlier assume that all register "numbers" that start | |
6359 | with an hex digit are real register numbers. Make sure | |
6360 | the server only sends such a packet if it knows the | |
6361 | client understands it. */ | |
c8e38a49 | 6362 | |
26d56a93 | 6363 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6364 | event->ptid = read_ptid (++p1, &p); |
26d56a93 SL |
6365 | else if (strprefix (p, p1, "watch") |
6366 | || strprefix (p, p1, "rwatch") | |
6367 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6368 | { |
f7e6eed5 | 6369 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6370 | p = unpack_varlen_hex (++p1, &addr); |
6371 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6372 | } |
26d56a93 | 6373 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6374 | { |
6375 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6376 | ||
6377 | /* Make sure the stub doesn't forget to indicate support | |
6378 | with qSupported. */ | |
6379 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6380 | error (_("Unexpected swbreak stop reason")); | |
6381 | ||
6382 | /* The value part is documented as "must be empty", | |
6383 | though we ignore it, in case we ever decide to make | |
6384 | use of it in a backward compatible way. */ | |
6385 | p = skip_to_semicolon (p1 + 1); | |
6386 | } | |
26d56a93 | 6387 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6388 | { |
6389 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6390 | ||
6391 | /* Make sure the stub doesn't forget to indicate support | |
6392 | with qSupported. */ | |
6393 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6394 | error (_("Unexpected hwbreak stop reason")); | |
6395 | ||
6396 | /* See above. */ | |
6397 | p = skip_to_semicolon (p1 + 1); | |
6398 | } | |
26d56a93 | 6399 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6400 | { |
1f10ba14 PA |
6401 | event->ws.kind = TARGET_WAITKIND_LOADED; |
6402 | p = skip_to_semicolon (p1 + 1); | |
6403 | } | |
26d56a93 | 6404 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6405 | { |
6406 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6407 | /* p1 will indicate "begin" or "end", but it makes | |
6408 | no difference for now, so ignore it. */ | |
6409 | p = skip_to_semicolon (p1 + 1); | |
6410 | } | |
26d56a93 | 6411 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6412 | { |
6413 | ULONGEST c; | |
a744cf53 | 6414 | |
1f10ba14 PA |
6415 | p = unpack_varlen_hex (++p1, &c); |
6416 | event->core = c; | |
cea39f65 | 6417 | } |
26d56a93 | 6418 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6419 | { |
6420 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6421 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6422 | } | |
26d56a93 | 6423 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6424 | { |
6425 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6426 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6427 | } | |
26d56a93 | 6428 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6429 | { |
6430 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
6431 | p = skip_to_semicolon (p1 + 1); | |
6432 | } | |
6ab24463 | 6433 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6434 | { |
6435 | ULONGEST ignored; | |
6436 | char pathname[PATH_MAX]; | |
6437 | int pathlen; | |
6438 | ||
6439 | /* Determine the length of the execd pathname. */ | |
6440 | p = unpack_varlen_hex (++p1, &ignored); | |
6441 | pathlen = (p - p1) / 2; | |
6442 | ||
6443 | /* Save the pathname for event reporting and for | |
6444 | the next run command. */ | |
6445 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6446 | pathname[pathlen] = '\0'; | |
6447 | ||
6448 | /* This is freed during event handling. */ | |
6449 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6450 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6451 | ||
6452 | /* Skip the registers included in this packet, since | |
6453 | they may be for an architecture different from the | |
6454 | one used by the original program. */ | |
6455 | skipregs = 1; | |
6456 | } | |
65706a29 PA |
6457 | else if (strprefix (p, p1, "create")) |
6458 | { | |
6459 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
6460 | p = skip_to_semicolon (p1 + 1); | |
6461 | } | |
cea39f65 MS |
6462 | else |
6463 | { | |
1f10ba14 PA |
6464 | ULONGEST pnum; |
6465 | char *p_temp; | |
6466 | ||
94585166 DB |
6467 | if (skipregs) |
6468 | { | |
6469 | p = skip_to_semicolon (p1 + 1); | |
6470 | p++; | |
6471 | continue; | |
6472 | } | |
6473 | ||
1f10ba14 PA |
6474 | /* Maybe a real ``P'' register number. */ |
6475 | p_temp = unpack_varlen_hex (p, &pnum); | |
6476 | /* If the first invalid character is the colon, we got a | |
6477 | register number. Otherwise, it's an unknown stop | |
6478 | reason. */ | |
6479 | if (p_temp == p1) | |
6480 | { | |
6481 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6482 | cached_reg_t cached_reg; | |
43ff13b4 | 6483 | |
1f10ba14 PA |
6484 | if (reg == NULL) |
6485 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6486 | Packet: '%s'\n"), |
1f10ba14 | 6487 | hex_string (pnum), p, buf); |
c8e38a49 | 6488 | |
1f10ba14 | 6489 | cached_reg.num = reg->regnum; |
4100683b | 6490 | |
1f10ba14 PA |
6491 | p = p1 + 1; |
6492 | fieldsize = hex2bin (p, cached_reg.data, | |
6493 | register_size (target_gdbarch (), | |
6494 | reg->regnum)); | |
6495 | p += 2 * fieldsize; | |
6496 | if (fieldsize < register_size (target_gdbarch (), | |
6497 | reg->regnum)) | |
6498 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6499 | |
1f10ba14 PA |
6500 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6501 | } | |
6502 | else | |
6503 | { | |
6504 | /* Not a number. Silently skip unknown optional | |
6505 | info. */ | |
6506 | p = skip_to_semicolon (p1 + 1); | |
6507 | } | |
cea39f65 | 6508 | } |
c8e38a49 | 6509 | |
cea39f65 MS |
6510 | if (*p != ';') |
6511 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6512 | buf, p); | |
6513 | ++p; | |
6514 | } | |
5b5596ff PA |
6515 | |
6516 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6517 | break; | |
6518 | ||
c8e38a49 PA |
6519 | /* fall through */ |
6520 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6521 | { |
6522 | int sig; | |
6523 | ||
6524 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6525 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6526 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6527 | event->ws.value.sig = (enum gdb_signal) sig; | |
6528 | else | |
6529 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6530 | } | |
c8e38a49 | 6531 | break; |
65706a29 PA |
6532 | case 'w': /* Thread exited. */ |
6533 | { | |
6534 | char *p; | |
6535 | ULONGEST value; | |
6536 | ||
6537 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
6538 | p = unpack_varlen_hex (&buf[1], &value); | |
6539 | event->ws.value.integer = value; | |
6540 | if (*p != ';') | |
6541 | error (_("stop reply packet badly formatted: %s"), buf); | |
6542 | event->ptid = read_ptid (++p, &p); | |
6543 | break; | |
6544 | } | |
c8e38a49 PA |
6545 | case 'W': /* Target exited. */ |
6546 | case 'X': | |
6547 | { | |
6548 | char *p; | |
6549 | int pid; | |
6550 | ULONGEST value; | |
82f73884 | 6551 | |
c8e38a49 PA |
6552 | /* GDB used to accept only 2 hex chars here. Stubs should |
6553 | only send more if they detect GDB supports multi-process | |
6554 | support. */ | |
6555 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6556 | |
c8e38a49 PA |
6557 | if (buf[0] == 'W') |
6558 | { | |
6559 | /* The remote process exited. */ | |
74531fed PA |
6560 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6561 | event->ws.value.integer = value; | |
c8e38a49 PA |
6562 | } |
6563 | else | |
6564 | { | |
6565 | /* The remote process exited with a signal. */ | |
74531fed | 6566 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6567 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6568 | event->ws.value.sig = (enum gdb_signal) value; | |
6569 | else | |
6570 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6571 | } |
82f73884 | 6572 | |
c8e38a49 PA |
6573 | /* If no process is specified, assume inferior_ptid. */ |
6574 | pid = ptid_get_pid (inferior_ptid); | |
6575 | if (*p == '\0') | |
6576 | ; | |
6577 | else if (*p == ';') | |
6578 | { | |
6579 | p++; | |
6580 | ||
0b24eb2d | 6581 | if (*p == '\0') |
82f73884 | 6582 | ; |
61012eef | 6583 | else if (startswith (p, "process:")) |
82f73884 | 6584 | { |
c8e38a49 | 6585 | ULONGEST upid; |
a744cf53 | 6586 | |
c8e38a49 PA |
6587 | p += sizeof ("process:") - 1; |
6588 | unpack_varlen_hex (p, &upid); | |
6589 | pid = upid; | |
82f73884 PA |
6590 | } |
6591 | else | |
6592 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6593 | } |
c8e38a49 PA |
6594 | else |
6595 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6596 | event->ptid = pid_to_ptid (pid); |
6597 | } | |
6598 | break; | |
6599 | } | |
6600 | ||
6efcd9a8 | 6601 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
6602 | error (_("No process or thread specified in stop reply: %s"), buf); |
6603 | } | |
6604 | ||
722247f1 YQ |
6605 | /* When the stub wants to tell GDB about a new notification reply, it |
6606 | sends a notification (%Stop, for example). Those can come it at | |
6607 | any time, hence, we have to make sure that any pending | |
6608 | putpkt/getpkt sequence we're making is finished, before querying | |
6609 | the stub for more events with the corresponding ack command | |
6610 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6611 | immediately upon receiving the notification, something like this | |
6612 | could happen: | |
74531fed PA |
6613 | |
6614 | 1.1) --> Hg 1 | |
6615 | 1.2) <-- OK | |
6616 | 1.3) --> g | |
6617 | 1.4) <-- %Stop | |
6618 | 1.5) --> vStopped | |
6619 | 1.6) <-- (registers reply to step #1.3) | |
6620 | ||
6621 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6622 | query. | |
6623 | ||
796cb314 | 6624 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6625 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6626 | doing whatever we were doing: | |
6627 | ||
6628 | 2.1) --> Hg 1 | |
6629 | 2.2) <-- OK | |
6630 | 2.3) --> g | |
6631 | 2.4) <-- %Stop | |
6632 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6633 | 2.5) <-- (registers reply to step #2.3) | |
6634 | ||
6635 | Eventualy after step #2.5, we return to the event loop, which | |
6636 | notices there's an event on the | |
6637 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6638 | associated callback --- the function below. At this point, we're | |
6639 | always safe to start a vStopped sequence. : | |
6640 | ||
6641 | 2.6) --> vStopped | |
6642 | 2.7) <-- T05 thread:2 | |
6643 | 2.8) --> vStopped | |
6644 | 2.9) --> OK | |
6645 | */ | |
6646 | ||
722247f1 YQ |
6647 | void |
6648 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6649 | { |
6650 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6651 | |
f48ff2a7 | 6652 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6653 | { |
722247f1 YQ |
6654 | if (notif_debug) |
6655 | fprintf_unfiltered (gdb_stdlog, | |
6656 | "notif: process: '%s' ack pending event\n", | |
6657 | nc->name); | |
74531fed | 6658 | |
722247f1 | 6659 | /* acknowledge */ |
f48ff2a7 YQ |
6660 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6661 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6662 | |
6663 | while (1) | |
6664 | { | |
6665 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6666 | if (strcmp (rs->buf, "OK") == 0) | |
6667 | break; | |
6668 | else | |
722247f1 | 6669 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6670 | } |
6671 | } | |
722247f1 YQ |
6672 | else |
6673 | { | |
6674 | if (notif_debug) | |
6675 | fprintf_unfiltered (gdb_stdlog, | |
6676 | "notif: process: '%s' no pending reply\n", | |
6677 | nc->name); | |
6678 | } | |
74531fed PA |
6679 | } |
6680 | ||
74531fed PA |
6681 | /* Called when it is decided that STOP_REPLY holds the info of the |
6682 | event that is to be returned to the core. This function always | |
6683 | destroys STOP_REPLY. */ | |
6684 | ||
6685 | static ptid_t | |
6686 | process_stop_reply (struct stop_reply *stop_reply, | |
6687 | struct target_waitstatus *status) | |
6688 | { | |
6689 | ptid_t ptid; | |
6690 | ||
6691 | *status = stop_reply->ws; | |
6692 | ptid = stop_reply->ptid; | |
6693 | ||
6694 | /* If no thread/process was reported by the stub, assume the current | |
6695 | inferior. */ | |
6696 | if (ptid_equal (ptid, null_ptid)) | |
6697 | ptid = inferior_ptid; | |
6698 | ||
5f3563ea PA |
6699 | if (status->kind != TARGET_WAITKIND_EXITED |
6700 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6701 | { |
ee154bee | 6702 | struct remote_state *rs = get_remote_state (); |
799a2abe | 6703 | struct private_thread_info *remote_thr; |
ee154bee | 6704 | |
5f3563ea PA |
6705 | /* Expedited registers. */ |
6706 | if (stop_reply->regcache) | |
6707 | { | |
217f1f79 | 6708 | struct regcache *regcache |
f5656ead | 6709 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6710 | cached_reg_t *reg; |
6711 | int ix; | |
6712 | ||
6713 | for (ix = 0; | |
6714 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6715 | ix++) | |
217f1f79 | 6716 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6717 | VEC_free (cached_reg_t, stop_reply->regcache); |
6718 | } | |
74531fed | 6719 | |
1941c569 | 6720 | remote_notice_new_inferior (ptid, 0); |
799a2abe PA |
6721 | remote_thr = demand_private_info (ptid); |
6722 | remote_thr->core = stop_reply->core; | |
6723 | remote_thr->stop_reason = stop_reply->stop_reason; | |
6724 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
74531fed PA |
6725 | } |
6726 | ||
74531fed PA |
6727 | stop_reply_xfree (stop_reply); |
6728 | return ptid; | |
6729 | } | |
6730 | ||
6731 | /* The non-stop mode version of target_wait. */ | |
6732 | ||
6733 | static ptid_t | |
47608cb1 | 6734 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6735 | { |
6736 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6737 | struct stop_reply *stop_reply; |
6738 | int ret; | |
fee9eda9 | 6739 | int is_notif = 0; |
74531fed PA |
6740 | |
6741 | /* If in non-stop mode, get out of getpkt even if a | |
6742 | notification is received. */ | |
6743 | ||
6744 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6745 | 0 /* forever */, &is_notif); |
74531fed PA |
6746 | while (1) |
6747 | { | |
fee9eda9 | 6748 | if (ret != -1 && !is_notif) |
74531fed PA |
6749 | switch (rs->buf[0]) |
6750 | { | |
6751 | case 'E': /* Error of some sort. */ | |
6752 | /* We're out of sync with the target now. Did it continue | |
6753 | or not? We can't tell which thread it was in non-stop, | |
6754 | so just ignore this. */ | |
6755 | warning (_("Remote failure reply: %s"), rs->buf); | |
6756 | break; | |
6757 | case 'O': /* Console output. */ | |
6758 | remote_console_output (rs->buf + 1); | |
6759 | break; | |
6760 | default: | |
6761 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6762 | break; | |
6763 | } | |
6764 | ||
6765 | /* Acknowledge a pending stop reply that may have arrived in the | |
6766 | mean time. */ | |
f48ff2a7 | 6767 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6768 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6769 | |
6770 | /* If indeed we noticed a stop reply, we're done. */ | |
6771 | stop_reply = queued_stop_reply (ptid); | |
6772 | if (stop_reply != NULL) | |
6773 | return process_stop_reply (stop_reply, status); | |
6774 | ||
47608cb1 | 6775 | /* Still no event. If we're just polling for an event, then |
74531fed | 6776 | return to the event loop. */ |
47608cb1 | 6777 | if (options & TARGET_WNOHANG) |
74531fed PA |
6778 | { |
6779 | status->kind = TARGET_WAITKIND_IGNORE; | |
6780 | return minus_one_ptid; | |
6781 | } | |
6782 | ||
47608cb1 | 6783 | /* Otherwise do a blocking wait. */ |
74531fed | 6784 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6785 | 1 /* forever */, &is_notif); |
74531fed PA |
6786 | } |
6787 | } | |
6788 | ||
6789 | /* Wait until the remote machine stops, then return, storing status in | |
6790 | STATUS just as `wait' would. */ | |
6791 | ||
6792 | static ptid_t | |
47608cb1 | 6793 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6794 | { |
6795 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6796 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6797 | char *buf; |
74531fed PA |
6798 | struct stop_reply *stop_reply; |
6799 | ||
47608cb1 PA |
6800 | again: |
6801 | ||
74531fed PA |
6802 | status->kind = TARGET_WAITKIND_IGNORE; |
6803 | status->value.integer = 0; | |
6804 | ||
6805 | stop_reply = queued_stop_reply (ptid); | |
6806 | if (stop_reply != NULL) | |
6807 | return process_stop_reply (stop_reply, status); | |
6808 | ||
6809 | if (rs->cached_wait_status) | |
6810 | /* Use the cached wait status, but only once. */ | |
6811 | rs->cached_wait_status = 0; | |
6812 | else | |
6813 | { | |
6814 | int ret; | |
722247f1 | 6815 | int is_notif; |
567420d1 PA |
6816 | int forever = ((options & TARGET_WNOHANG) == 0 |
6817 | && wait_forever_enabled_p); | |
6818 | ||
6819 | if (!rs->waiting_for_stop_reply) | |
6820 | { | |
6821 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6822 | return minus_one_ptid; | |
6823 | } | |
74531fed PA |
6824 | |
6825 | if (!target_is_async_p ()) | |
6826 | { | |
934b9bac | 6827 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6828 | /* If the user hit C-c before this packet, or between packets, |
6829 | pretend that it was hit right here. */ | |
522002f9 | 6830 | if (check_quit_flag ()) |
74531fed | 6831 | { |
522002f9 | 6832 | clear_quit_flag (); |
934b9bac | 6833 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6834 | } |
6835 | } | |
6836 | ||
6837 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6838 | _never_ wait for ever -> test on target_is_async_p(). | |
6839 | However, before we do that we need to ensure that the caller | |
6840 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6841 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6842 | forever, &is_notif); |
722247f1 | 6843 | |
5e1b953b SDJ |
6844 | if (!target_is_async_p ()) |
6845 | signal (SIGINT, ofunc); | |
6846 | ||
722247f1 YQ |
6847 | /* GDB gets a notification. Return to core as this event is |
6848 | not interesting. */ | |
6849 | if (ret != -1 && is_notif) | |
6850 | return minus_one_ptid; | |
567420d1 PA |
6851 | |
6852 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6853 | return minus_one_ptid; | |
74531fed PA |
6854 | } |
6855 | ||
6856 | buf = rs->buf; | |
6857 | ||
3a29589a DJ |
6858 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6859 | an 'F' or 'O' packet. */ | |
6860 | if (buf[0] != 'F' && buf[0] != 'O') | |
6861 | rs->ctrlc_pending_p = 0; | |
6862 | ||
74531fed PA |
6863 | switch (buf[0]) |
6864 | { | |
6865 | case 'E': /* Error of some sort. */ | |
6866 | /* We're out of sync with the target now. Did it continue or | |
6867 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
6868 | rs->waiting_for_stop_reply = 0; |
6869 | ||
74531fed PA |
6870 | warning (_("Remote failure reply: %s"), buf); |
6871 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6872 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6873 | break; |
6874 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6875 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6876 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6877 | break; |
6878 | case 'T': case 'S': case 'X': case 'W': | |
6879 | { | |
29090fb6 LM |
6880 | struct stop_reply *stop_reply; |
6881 | ||
6882 | /* There is a stop reply to handle. */ | |
6883 | rs->waiting_for_stop_reply = 0; | |
6884 | ||
6885 | stop_reply | |
722247f1 YQ |
6886 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
6887 | rs->buf); | |
74531fed | 6888 | |
74531fed | 6889 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6890 | break; |
6891 | } | |
6892 | case 'O': /* Console output. */ | |
6893 | remote_console_output (buf + 1); | |
c8e38a49 PA |
6894 | break; |
6895 | case '\0': | |
b73be471 | 6896 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6897 | { |
6898 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6899 | remote system doesn't support it. */ | |
6900 | target_terminal_ours_for_output (); | |
6901 | printf_filtered | |
6902 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6903 | gdb_signal_to_name (rs->last_sent_signal)); |
6904 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6905 | target_terminal_inferior (); |
6906 | ||
280ceea3 | 6907 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 | 6908 | putpkt ((char *) buf); |
c8e38a49 | 6909 | break; |
43ff13b4 | 6910 | } |
c8e38a49 PA |
6911 | /* else fallthrough */ |
6912 | default: | |
6913 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 6914 | break; |
43ff13b4 | 6915 | } |
c8e38a49 | 6916 | |
c8e38a49 | 6917 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6918 | { |
6919 | /* Nothing interesting happened. If we're doing a non-blocking | |
6920 | poll, we're done. Otherwise, go back to waiting. */ | |
6921 | if (options & TARGET_WNOHANG) | |
6922 | return minus_one_ptid; | |
6923 | else | |
6924 | goto again; | |
6925 | } | |
74531fed PA |
6926 | else if (status->kind != TARGET_WAITKIND_EXITED |
6927 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6928 | { |
6929 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6930 | record_currthread (rs, event_ptid); |
82f73884 PA |
6931 | else |
6932 | event_ptid = inferior_ptid; | |
43ff13b4 | 6933 | } |
74531fed PA |
6934 | else |
6935 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6936 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6937 | |
82f73884 | 6938 | return event_ptid; |
43ff13b4 JM |
6939 | } |
6940 | ||
74531fed PA |
6941 | /* Wait until the remote machine stops, then return, storing status in |
6942 | STATUS just as `wait' would. */ | |
6943 | ||
c8e38a49 | 6944 | static ptid_t |
117de6a9 | 6945 | remote_wait (struct target_ops *ops, |
47608cb1 | 6946 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6947 | { |
6948 | ptid_t event_ptid; | |
6949 | ||
6efcd9a8 | 6950 | if (target_is_non_stop_p ()) |
47608cb1 | 6951 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6952 | else |
47608cb1 | 6953 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6954 | |
d9d41e78 | 6955 | if (target_is_async_p ()) |
c8e38a49 | 6956 | { |
74531fed PA |
6957 | /* If there are are events left in the queue tell the event loop |
6958 | to return here. */ | |
722247f1 | 6959 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6960 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6961 | } |
c8e38a49 PA |
6962 | |
6963 | return event_ptid; | |
6964 | } | |
6965 | ||
74ca34ce | 6966 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6967 | |
b96ec7ac | 6968 | static int |
56be3814 | 6969 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6970 | { |
6971 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6972 | char *buf, *p; |
b96ec7ac AC |
6973 | char regp[MAX_REGISTER_SIZE]; |
6974 | int i; | |
6975 | ||
4082afcc | 6976 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6977 | return 0; |
6978 | ||
6979 | if (reg->pnum == -1) | |
6980 | return 0; | |
6981 | ||
2e9f7625 | 6982 | p = rs->buf; |
fcad0fa4 | 6983 | *p++ = 'p'; |
74ca34ce | 6984 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6985 | *p++ = '\0'; |
1f4437a4 MS |
6986 | putpkt (rs->buf); |
6987 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6988 | |
2e9f7625 DJ |
6989 | buf = rs->buf; |
6990 | ||
74ca34ce DJ |
6991 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6992 | { | |
6993 | case PACKET_OK: | |
6994 | break; | |
6995 | case PACKET_UNKNOWN: | |
6996 | return 0; | |
6997 | case PACKET_ERROR: | |
27a9c0bf MS |
6998 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6999 | gdbarch_register_name (get_regcache_arch (regcache), | |
7000 | reg->regnum), | |
7001 | buf); | |
74ca34ce | 7002 | } |
3f9a994c JB |
7003 | |
7004 | /* If this register is unfetchable, tell the regcache. */ | |
7005 | if (buf[0] == 'x') | |
8480adf2 | 7006 | { |
56be3814 | 7007 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7008 | return 1; |
b96ec7ac | 7009 | } |
b96ec7ac | 7010 | |
3f9a994c JB |
7011 | /* Otherwise, parse and supply the value. */ |
7012 | p = buf; | |
7013 | i = 0; | |
7014 | while (p[0] != 0) | |
7015 | { | |
7016 | if (p[1] == 0) | |
74ca34ce | 7017 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7018 | |
7019 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7020 | p += 2; | |
7021 | } | |
56be3814 | 7022 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7023 | return 1; |
b96ec7ac AC |
7024 | } |
7025 | ||
74ca34ce DJ |
7026 | /* Fetch the registers included in the target's 'g' packet. */ |
7027 | ||
29709017 DJ |
7028 | static int |
7029 | send_g_packet (void) | |
c906108c | 7030 | { |
d01949b6 | 7031 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7032 | int buf_len; |
c906108c | 7033 | |
bba74b36 | 7034 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7035 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7036 | |
29709017 DJ |
7037 | /* We can get out of synch in various cases. If the first character |
7038 | in the buffer is not a hex character, assume that has happened | |
7039 | and try to fetch another packet to read. */ | |
7040 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7041 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7042 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7043 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7044 | { | |
7045 | if (remote_debug) | |
7046 | fprintf_unfiltered (gdb_stdlog, | |
7047 | "Bad register packet; fetching a new packet\n"); | |
7048 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7049 | } | |
7050 | ||
74ca34ce DJ |
7051 | buf_len = strlen (rs->buf); |
7052 | ||
7053 | /* Sanity check the received packet. */ | |
7054 | if (buf_len % 2 != 0) | |
7055 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7056 | |
7057 | return buf_len / 2; | |
7058 | } | |
7059 | ||
7060 | static void | |
56be3814 | 7061 | process_g_packet (struct regcache *regcache) |
29709017 | 7062 | { |
4a22f64d | 7063 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7064 | struct remote_state *rs = get_remote_state (); |
7065 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7066 | int i, buf_len; | |
7067 | char *p; | |
7068 | char *regs; | |
7069 | ||
7070 | buf_len = strlen (rs->buf); | |
7071 | ||
7072 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7073 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7074 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7075 | ||
7076 | /* Save the size of the packet sent to us by the target. It is used | |
7077 | as a heuristic when determining the max size of packets that the | |
7078 | target can safely receive. */ | |
7079 | if (rsa->actual_register_packet_size == 0) | |
7080 | rsa->actual_register_packet_size = buf_len; | |
7081 | ||
7082 | /* If this is smaller than we guessed the 'g' packet would be, | |
7083 | update our records. A 'g' reply that doesn't include a register's | |
7084 | value implies either that the register is not available, or that | |
7085 | the 'p' packet must be used. */ | |
7086 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7087 | { |
74ca34ce DJ |
7088 | rsa->sizeof_g_packet = buf_len / 2; |
7089 | ||
4a22f64d | 7090 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7091 | { |
74ca34ce DJ |
7092 | if (rsa->regs[i].pnum == -1) |
7093 | continue; | |
7094 | ||
7095 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
7096 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 7097 | else |
74ca34ce | 7098 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7099 | } |
74ca34ce | 7100 | } |
b323314b | 7101 | |
224c3ddb | 7102 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7103 | |
7104 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7105 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7106 | |
c906108c SS |
7107 | /* Reply describes registers byte by byte, each byte encoded as two |
7108 | hex characters. Suck them all up, then supply them to the | |
7109 | register cacheing/storage mechanism. */ | |
7110 | ||
74ca34ce | 7111 | p = rs->buf; |
ea9c271d | 7112 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7113 | { |
74ca34ce DJ |
7114 | if (p[0] == 0 || p[1] == 0) |
7115 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7116 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7117 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7118 | |
c906108c | 7119 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7120 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7121 | else |
7122 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7123 | p += 2; | |
7124 | } | |
7125 | ||
a744cf53 MS |
7126 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7127 | { | |
7128 | struct packet_reg *r = &rsa->regs[i]; | |
7129 | ||
7130 | if (r->in_g_packet) | |
7131 | { | |
7132 | if (r->offset * 2 >= strlen (rs->buf)) | |
7133 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
7134 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7135 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7136 | else if (rs->buf[r->offset * 2] == 'x') |
7137 | { | |
7138 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7139 | /* The register isn't available, mark it as such (at | |
7140 | the same time setting the value to zero). */ | |
7141 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7142 | } | |
7143 | else | |
7144 | regcache_raw_supply (regcache, r->regnum, | |
7145 | regs + r->offset); | |
7146 | } | |
7147 | } | |
c906108c SS |
7148 | } |
7149 | ||
29709017 | 7150 | static void |
56be3814 | 7151 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7152 | { |
7153 | send_g_packet (); | |
56be3814 | 7154 | process_g_packet (regcache); |
29709017 DJ |
7155 | } |
7156 | ||
e6e4e701 PA |
7157 | /* Make the remote selected traceframe match GDB's selected |
7158 | traceframe. */ | |
7159 | ||
7160 | static void | |
7161 | set_remote_traceframe (void) | |
7162 | { | |
7163 | int newnum; | |
262e1174 | 7164 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7165 | |
262e1174 | 7166 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7167 | return; |
7168 | ||
7169 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7170 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7171 | |
7172 | newnum = target_trace_find (tfind_number, | |
7173 | get_traceframe_number (), 0, 0, NULL); | |
7174 | ||
7175 | /* Should not happen. If it does, all bets are off. */ | |
7176 | if (newnum != get_traceframe_number ()) | |
7177 | warning (_("could not set remote traceframe")); | |
7178 | } | |
7179 | ||
74ca34ce | 7180 | static void |
28439f5e PA |
7181 | remote_fetch_registers (struct target_ops *ops, |
7182 | struct regcache *regcache, int regnum) | |
74ca34ce | 7183 | { |
74ca34ce DJ |
7184 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7185 | int i; | |
7186 | ||
e6e4e701 | 7187 | set_remote_traceframe (); |
79d7f229 | 7188 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7189 | |
7190 | if (regnum >= 0) | |
7191 | { | |
7192 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7193 | |
74ca34ce DJ |
7194 | gdb_assert (reg != NULL); |
7195 | ||
7196 | /* If this register might be in the 'g' packet, try that first - | |
7197 | we are likely to read more than one register. If this is the | |
7198 | first 'g' packet, we might be overly optimistic about its | |
7199 | contents, so fall back to 'p'. */ | |
7200 | if (reg->in_g_packet) | |
7201 | { | |
56be3814 | 7202 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7203 | if (reg->in_g_packet) |
7204 | return; | |
7205 | } | |
7206 | ||
56be3814 | 7207 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7208 | return; |
7209 | ||
7210 | /* This register is not available. */ | |
56be3814 | 7211 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7212 | |
7213 | return; | |
7214 | } | |
7215 | ||
56be3814 | 7216 | fetch_registers_using_g (regcache); |
74ca34ce | 7217 | |
4a22f64d | 7218 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7219 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7220 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7221 | { |
7222 | /* This register is not available. */ | |
56be3814 | 7223 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7224 | } |
7225 | } | |
7226 | ||
c906108c SS |
7227 | /* Prepare to store registers. Since we may send them all (using a |
7228 | 'G' request), we have to read out the ones we don't want to change | |
7229 | first. */ | |
7230 | ||
c5aa993b | 7231 | static void |
f32dbf8c | 7232 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7233 | { |
ea9c271d | 7234 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7235 | int i; |
cfd77fa1 | 7236 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 7237 | |
c906108c | 7238 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7239 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7240 | { |
7241 | case PACKET_DISABLE: | |
7242 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7243 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7244 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7245 | if (rsa->regs[i].in_g_packet) |
316f2060 | 7246 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
7247 | break; |
7248 | case PACKET_ENABLE: | |
7249 | break; | |
7250 | } | |
7251 | } | |
7252 | ||
ad10f812 | 7253 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7254 | packet was not recognized. */ |
5a2468f5 JM |
7255 | |
7256 | static int | |
1f4437a4 MS |
7257 | store_register_using_P (const struct regcache *regcache, |
7258 | struct packet_reg *reg) | |
5a2468f5 | 7259 | { |
4a22f64d | 7260 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7261 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7262 | /* Try storing a single register. */ |
6d820c5c | 7263 | char *buf = rs->buf; |
cfd77fa1 | 7264 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7265 | char *p; |
5a2468f5 | 7266 | |
4082afcc | 7267 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7268 | return 0; |
7269 | ||
7270 | if (reg->pnum == -1) | |
7271 | return 0; | |
7272 | ||
ea9c271d | 7273 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7274 | p = buf + strlen (buf); |
56be3814 | 7275 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7276 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7277 | putpkt (rs->buf); |
7278 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7279 | |
74ca34ce DJ |
7280 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7281 | { | |
7282 | case PACKET_OK: | |
7283 | return 1; | |
7284 | case PACKET_ERROR: | |
27a9c0bf MS |
7285 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7286 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7287 | case PACKET_UNKNOWN: |
7288 | return 0; | |
7289 | default: | |
7290 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7291 | } | |
c906108c SS |
7292 | } |
7293 | ||
23860348 MS |
7294 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7295 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7296 | |
7297 | static void | |
56be3814 | 7298 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7299 | { |
d01949b6 | 7300 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7301 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7302 | gdb_byte *regs; |
c906108c SS |
7303 | char *p; |
7304 | ||
193cb69f AC |
7305 | /* Extract all the registers in the regcache copying them into a |
7306 | local buffer. */ | |
7307 | { | |
b323314b | 7308 | int i; |
a744cf53 | 7309 | |
224c3ddb | 7310 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7311 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7312 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7313 | { |
ea9c271d | 7314 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7315 | |
b323314b | 7316 | if (r->in_g_packet) |
56be3814 | 7317 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7318 | } |
7319 | } | |
c906108c SS |
7320 | |
7321 | /* Command describes registers byte by byte, | |
7322 | each byte encoded as two hex characters. */ | |
6d820c5c | 7323 | p = rs->buf; |
193cb69f | 7324 | *p++ = 'G'; |
74ca34ce DJ |
7325 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7326 | updated. */ | |
7327 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7328 | putpkt (rs->buf); |
7329 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7330 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7331 | error (_("Could not write registers; remote failure reply '%s'"), |
7332 | rs->buf); | |
c906108c | 7333 | } |
74ca34ce DJ |
7334 | |
7335 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7336 | of the register cache buffer. FIXME: ignores errors. */ | |
7337 | ||
7338 | static void | |
28439f5e PA |
7339 | remote_store_registers (struct target_ops *ops, |
7340 | struct regcache *regcache, int regnum) | |
74ca34ce | 7341 | { |
74ca34ce DJ |
7342 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7343 | int i; | |
7344 | ||
e6e4e701 | 7345 | set_remote_traceframe (); |
79d7f229 | 7346 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7347 | |
7348 | if (regnum >= 0) | |
7349 | { | |
7350 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7351 | |
74ca34ce DJ |
7352 | gdb_assert (reg != NULL); |
7353 | ||
7354 | /* Always prefer to store registers using the 'P' packet if | |
7355 | possible; we often change only a small number of registers. | |
7356 | Sometimes we change a larger number; we'd need help from a | |
7357 | higher layer to know to use 'G'. */ | |
56be3814 | 7358 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7359 | return; |
7360 | ||
7361 | /* For now, don't complain if we have no way to write the | |
7362 | register. GDB loses track of unavailable registers too | |
7363 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7364 | any way to read the register, either... */ |
74ca34ce DJ |
7365 | if (!reg->in_g_packet) |
7366 | return; | |
7367 | ||
56be3814 | 7368 | store_registers_using_G (regcache); |
74ca34ce DJ |
7369 | return; |
7370 | } | |
7371 | ||
56be3814 | 7372 | store_registers_using_G (regcache); |
74ca34ce | 7373 | |
4a22f64d | 7374 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7375 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7376 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7377 | /* See above for why we do not issue an error here. */ |
7378 | continue; | |
7379 | } | |
c906108c SS |
7380 | \f |
7381 | ||
7382 | /* Return the number of hex digits in num. */ | |
7383 | ||
7384 | static int | |
fba45db2 | 7385 | hexnumlen (ULONGEST num) |
c906108c SS |
7386 | { |
7387 | int i; | |
7388 | ||
7389 | for (i = 0; num != 0; i++) | |
7390 | num >>= 4; | |
7391 | ||
7392 | return max (i, 1); | |
7393 | } | |
7394 | ||
2df3850c | 7395 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7396 | |
7397 | static int | |
fba45db2 | 7398 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7399 | { |
c906108c | 7400 | int len = hexnumlen (num); |
a744cf53 | 7401 | |
2df3850c JM |
7402 | return hexnumnstr (buf, num, len); |
7403 | } | |
7404 | ||
c906108c | 7405 | |
2df3850c | 7406 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7407 | |
2df3850c | 7408 | static int |
fba45db2 | 7409 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7410 | { |
7411 | int i; | |
7412 | ||
7413 | buf[width] = '\0'; | |
7414 | ||
7415 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7416 | { |
c5aa993b | 7417 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7418 | num >>= 4; |
7419 | } | |
7420 | ||
2df3850c | 7421 | return width; |
c906108c SS |
7422 | } |
7423 | ||
23860348 | 7424 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7425 | |
7426 | static CORE_ADDR | |
fba45db2 | 7427 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7428 | { |
883b9c6c | 7429 | unsigned int address_size = remote_address_size; |
a744cf53 | 7430 | |
911c95a5 UW |
7431 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7432 | if (!address_size) | |
f5656ead | 7433 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7434 | |
7435 | if (address_size > 0 | |
7436 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7437 | { |
7438 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7439 | in a ULONGEST variable. */ |
c906108c | 7440 | ULONGEST mask = 1; |
a744cf53 | 7441 | |
911c95a5 | 7442 | mask = (mask << address_size) - 1; |
c906108c SS |
7443 | addr &= mask; |
7444 | } | |
7445 | return addr; | |
7446 | } | |
7447 | ||
7448 | /* Determine whether the remote target supports binary downloading. | |
7449 | This is accomplished by sending a no-op memory write of zero length | |
7450 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7451 | the whole packet, since many stubs strip the eighth bit and |
7452 | subsequently compute a wrong checksum, which causes real havoc with | |
7453 | remote_write_bytes. | |
7a292a7a | 7454 | |
96baa820 | 7455 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7456 | clean. In cases like this, the user should clear "remote |
23860348 | 7457 | X-packet". */ |
96baa820 | 7458 | |
c906108c | 7459 | static void |
fba45db2 | 7460 | check_binary_download (CORE_ADDR addr) |
c906108c | 7461 | { |
d01949b6 | 7462 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7463 | |
4082afcc | 7464 | switch (packet_support (PACKET_X)) |
c906108c | 7465 | { |
96baa820 JM |
7466 | case PACKET_DISABLE: |
7467 | break; | |
7468 | case PACKET_ENABLE: | |
7469 | break; | |
7470 | case PACKET_SUPPORT_UNKNOWN: | |
7471 | { | |
96baa820 | 7472 | char *p; |
802188a7 | 7473 | |
2e9f7625 | 7474 | p = rs->buf; |
96baa820 JM |
7475 | *p++ = 'X'; |
7476 | p += hexnumstr (p, (ULONGEST) addr); | |
7477 | *p++ = ','; | |
7478 | p += hexnumstr (p, (ULONGEST) 0); | |
7479 | *p++ = ':'; | |
7480 | *p = '\0'; | |
802188a7 | 7481 | |
2e9f7625 | 7482 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7483 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7484 | |
2e9f7625 | 7485 | if (rs->buf[0] == '\0') |
96baa820 JM |
7486 | { |
7487 | if (remote_debug) | |
7488 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7489 | "binary downloading NOT " |
7490 | "supported by target\n"); | |
444abaca | 7491 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7492 | } |
7493 | else | |
7494 | { | |
7495 | if (remote_debug) | |
7496 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7497 | "binary downloading supported by target\n"); |
444abaca | 7498 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7499 | } |
7500 | break; | |
7501 | } | |
c906108c SS |
7502 | } |
7503 | } | |
7504 | ||
124e13d9 SM |
7505 | /* Helper function to resize the payload in order to try to get a good |
7506 | alignment. We try to write an amount of data such that the next write will | |
7507 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7508 | ||
7509 | static int | |
7510 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7511 | { | |
7512 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7513 | } | |
7514 | ||
c906108c SS |
7515 | /* Write memory data directly to the remote machine. |
7516 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7517 | HEADER is the starting part of the packet. |
c906108c SS |
7518 | MEMADDR is the address in the remote memory space. |
7519 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7520 | LEN_UNITS is the number of addressable units to write. |
7521 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7522 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7523 | should send data as binary ('X'), or hex-encoded ('M'). | |
7524 | ||
7525 | The function creates packet of the form | |
7526 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7527 | ||
124e13d9 | 7528 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7529 | |
7530 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7531 | are omitted. | |
7532 | ||
9b409511 | 7533 | Return the transferred status, error or OK (an |
124e13d9 SM |
7534 | 'enum target_xfer_status' value). Save the number of addressable units |
7535 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7536 | ||
7537 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7538 | exchange between gdb and the stub could look like (?? in place of the | |
7539 | checksum): | |
7540 | ||
7541 | -> $m1000,4#?? | |
7542 | <- aaaabbbbccccdddd | |
7543 | ||
7544 | -> $M1000,3:eeeeffffeeee#?? | |
7545 | <- OK | |
7546 | ||
7547 | -> $m1000,4#?? | |
7548 | <- eeeeffffeeeedddd */ | |
c906108c | 7549 | |
9b409511 | 7550 | static enum target_xfer_status |
a76d924d | 7551 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7552 | const gdb_byte *myaddr, ULONGEST len_units, |
7553 | int unit_size, ULONGEST *xfered_len_units, | |
7554 | char packet_format, int use_length) | |
c906108c | 7555 | { |
6d820c5c | 7556 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7557 | char *p; |
a76d924d DJ |
7558 | char *plen = NULL; |
7559 | int plenlen = 0; | |
124e13d9 SM |
7560 | int todo_units; |
7561 | int units_written; | |
7562 | int payload_capacity_bytes; | |
7563 | int payload_length_bytes; | |
a76d924d DJ |
7564 | |
7565 | if (packet_format != 'X' && packet_format != 'M') | |
7566 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7567 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7568 | |
124e13d9 | 7569 | if (len_units == 0) |
9b409511 | 7570 | return TARGET_XFER_EOF; |
b2182ed2 | 7571 | |
124e13d9 | 7572 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7573 | |
6d820c5c DJ |
7574 | /* The packet buffer will be large enough for the payload; |
7575 | get_memory_packet_size ensures this. */ | |
a76d924d | 7576 | rs->buf[0] = '\0'; |
c906108c | 7577 | |
a257b5bb | 7578 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7579 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7580 | ||
124e13d9 | 7581 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7582 | if (!use_length) |
0df8b418 | 7583 | /* The comma won't be used. */ |
124e13d9 SM |
7584 | payload_capacity_bytes += 1; |
7585 | payload_capacity_bytes -= strlen (header); | |
7586 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7587 | |
a76d924d | 7588 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7589 | |
a76d924d DJ |
7590 | strcat (rs->buf, header); |
7591 | p = rs->buf + strlen (header); | |
7592 | ||
7593 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7594 | if (packet_format == 'X') | |
c906108c | 7595 | { |
23860348 | 7596 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7597 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7598 | if (use_length) |
124e13d9 SM |
7599 | payload_capacity_bytes -= hexnumlen (todo_units); |
7600 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7601 | } |
7602 | else | |
7603 | { | |
124e13d9 SM |
7604 | /* Number of bytes that will fit. */ |
7605 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7606 | if (use_length) |
124e13d9 SM |
7607 | payload_capacity_bytes -= hexnumlen (todo_units); |
7608 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7609 | } |
a76d924d | 7610 | |
124e13d9 | 7611 | if (todo_units <= 0) |
3de11b2e | 7612 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7613 | _("minimum packet size too small to write data")); |
802188a7 | 7614 | |
6765f3e5 DJ |
7615 | /* If we already need another packet, then try to align the end |
7616 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7617 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7618 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7619 | |
a257b5bb | 7620 | /* Append "<memaddr>". */ |
917317f4 JM |
7621 | memaddr = remote_address_masked (memaddr); |
7622 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7623 | |
a76d924d DJ |
7624 | if (use_length) |
7625 | { | |
7626 | /* Append ",". */ | |
7627 | *p++ = ','; | |
802188a7 | 7628 | |
124e13d9 SM |
7629 | /* Append the length and retain its location and size. It may need to be |
7630 | adjusted once the packet body has been created. */ | |
a76d924d | 7631 | plen = p; |
124e13d9 | 7632 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7633 | p += plenlen; |
7634 | } | |
a257b5bb AC |
7635 | |
7636 | /* Append ":". */ | |
917317f4 JM |
7637 | *p++ = ':'; |
7638 | *p = '\0'; | |
802188a7 | 7639 | |
a257b5bb | 7640 | /* Append the packet body. */ |
a76d924d | 7641 | if (packet_format == 'X') |
917317f4 | 7642 | { |
917317f4 JM |
7643 | /* Binary mode. Send target system values byte by byte, in |
7644 | increasing byte addresses. Only escape certain critical | |
7645 | characters. */ | |
124e13d9 SM |
7646 | payload_length_bytes = |
7647 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7648 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7649 | |
124e13d9 | 7650 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7651 | a second try to keep the end of the packet aligned. Don't do |
7652 | this if the packet is tiny. */ | |
124e13d9 | 7653 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7654 | { |
124e13d9 SM |
7655 | int new_todo_units; |
7656 | ||
7657 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7658 | ||
7659 | if (new_todo_units != units_written) | |
7660 | payload_length_bytes = | |
7661 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7662 | (gdb_byte *) p, &units_written, | |
7663 | payload_capacity_bytes); | |
6765f3e5 DJ |
7664 | } |
7665 | ||
124e13d9 SM |
7666 | p += payload_length_bytes; |
7667 | if (use_length && units_written < todo_units) | |
c906108c | 7668 | { |
802188a7 | 7669 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7670 | and we have actually sent fewer units than planned. |
917317f4 JM |
7671 | Fix-up the length field of the packet. Use the same |
7672 | number of characters as before. */ | |
124e13d9 SM |
7673 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7674 | plenlen); | |
917317f4 | 7675 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7676 | } |
a76d924d DJ |
7677 | } |
7678 | else | |
7679 | { | |
917317f4 JM |
7680 | /* Normal mode: Send target system values byte by byte, in |
7681 | increasing byte addresses. Each byte is encoded as a two hex | |
7682 | value. */ | |
124e13d9 SM |
7683 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7684 | units_written = todo_units; | |
c906108c | 7685 | } |
802188a7 | 7686 | |
2e9f7625 | 7687 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7688 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7689 | |
2e9f7625 | 7690 | if (rs->buf[0] == 'E') |
00d84524 | 7691 | return TARGET_XFER_E_IO; |
802188a7 | 7692 | |
124e13d9 SM |
7693 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7694 | send fewer units than we'd planned. */ | |
7695 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7696 | return TARGET_XFER_OK; |
c906108c SS |
7697 | } |
7698 | ||
a76d924d DJ |
7699 | /* Write memory data directly to the remote machine. |
7700 | This does not inform the data cache; the data cache uses this. | |
7701 | MEMADDR is the address in the remote memory space. | |
7702 | MYADDR is the address of the buffer in our space. | |
7703 | LEN is the number of bytes. | |
7704 | ||
9b409511 YQ |
7705 | Return the transferred status, error or OK (an |
7706 | 'enum target_xfer_status' value). Save the number of bytes | |
7707 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7708 | |
9b409511 YQ |
7709 | static enum target_xfer_status |
7710 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7711 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7712 | { |
7713 | char *packet_format = 0; | |
7714 | ||
7715 | /* Check whether the target supports binary download. */ | |
7716 | check_binary_download (memaddr); | |
7717 | ||
4082afcc | 7718 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7719 | { |
7720 | case PACKET_ENABLE: | |
7721 | packet_format = "X"; | |
7722 | break; | |
7723 | case PACKET_DISABLE: | |
7724 | packet_format = "M"; | |
7725 | break; | |
7726 | case PACKET_SUPPORT_UNKNOWN: | |
7727 | internal_error (__FILE__, __LINE__, | |
7728 | _("remote_write_bytes: bad internal state")); | |
7729 | default: | |
7730 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7731 | } | |
7732 | ||
7733 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7734 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7735 | packet_format[0], 1); |
a76d924d DJ |
7736 | } |
7737 | ||
9217e74e YQ |
7738 | /* Read memory data directly from the remote machine. |
7739 | This does not use the data cache; the data cache uses this. | |
7740 | MEMADDR is the address in the remote memory space. | |
7741 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7742 | LEN_UNITS is the number of addressable memory units to read.. |
7743 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7744 | |
7745 | Return the transferred status, error or OK (an | |
7746 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7747 | transferred in *XFERED_LEN_UNITS. |
7748 | ||
7749 | See the comment of remote_write_bytes_aux for an example of | |
7750 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7751 | |
7752 | static enum target_xfer_status | |
124e13d9 SM |
7753 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7754 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7755 | { |
7756 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7757 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7758 | char *p; |
124e13d9 SM |
7759 | int todo_units; |
7760 | int decoded_bytes; | |
9217e74e | 7761 | |
124e13d9 | 7762 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7763 | /* The packet buffer will be large enough for the payload; |
7764 | get_memory_packet_size ensures this. */ | |
7765 | ||
124e13d9 SM |
7766 | /* Number of units that will fit. */ |
7767 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7768 | |
7769 | /* Construct "m"<memaddr>","<len>". */ | |
7770 | memaddr = remote_address_masked (memaddr); | |
7771 | p = rs->buf; | |
7772 | *p++ = 'm'; | |
7773 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7774 | *p++ = ','; | |
124e13d9 | 7775 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7776 | *p = '\0'; |
7777 | putpkt (rs->buf); | |
7778 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7779 | if (rs->buf[0] == 'E' | |
7780 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7781 | && rs->buf[3] == '\0') | |
7782 | return TARGET_XFER_E_IO; | |
7783 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7784 | characters. */ | |
7785 | p = rs->buf; | |
124e13d9 | 7786 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7787 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7788 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7789 | return TARGET_XFER_OK; |
7790 | } | |
7791 | ||
b55fbac4 YQ |
7792 | /* Using the set of read-only target sections of remote, read live |
7793 | read-only memory. | |
8acf9577 YQ |
7794 | |
7795 | For interface/parameters/return description see target.h, | |
7796 | to_xfer_partial. */ | |
7797 | ||
7798 | static enum target_xfer_status | |
b55fbac4 YQ |
7799 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7800 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7801 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7802 | { |
7803 | struct target_section *secp; | |
7804 | struct target_section_table *table; | |
7805 | ||
7806 | secp = target_section_by_addr (ops, memaddr); | |
7807 | if (secp != NULL | |
7808 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7809 | secp->the_bfd_section) | |
7810 | & SEC_READONLY)) | |
7811 | { | |
7812 | struct target_section *p; | |
7813 | ULONGEST memend = memaddr + len; | |
7814 | ||
7815 | table = target_get_section_table (ops); | |
7816 | ||
7817 | for (p = table->sections; p < table->sections_end; p++) | |
7818 | { | |
7819 | if (memaddr >= p->addr) | |
7820 | { | |
7821 | if (memend <= p->endaddr) | |
7822 | { | |
7823 | /* Entire transfer is within this section. */ | |
124e13d9 | 7824 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7825 | xfered_len); |
8acf9577 YQ |
7826 | } |
7827 | else if (memaddr >= p->endaddr) | |
7828 | { | |
7829 | /* This section ends before the transfer starts. */ | |
7830 | continue; | |
7831 | } | |
7832 | else | |
7833 | { | |
7834 | /* This section overlaps the transfer. Just do half. */ | |
7835 | len = p->endaddr - memaddr; | |
124e13d9 | 7836 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7837 | xfered_len); |
8acf9577 YQ |
7838 | } |
7839 | } | |
7840 | } | |
7841 | } | |
7842 | ||
7843 | return TARGET_XFER_EOF; | |
7844 | } | |
7845 | ||
9217e74e YQ |
7846 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7847 | first if the requested memory is unavailable in traceframe. | |
7848 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7849 | |
9b409511 | 7850 | static enum target_xfer_status |
8acf9577 | 7851 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7852 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7853 | ULONGEST *xfered_len) | |
c906108c | 7854 | { |
6b6aa828 | 7855 | if (len == 0) |
96c4f946 | 7856 | return TARGET_XFER_EOF; |
b2182ed2 | 7857 | |
8acf9577 YQ |
7858 | if (get_traceframe_number () != -1) |
7859 | { | |
7860 | VEC(mem_range_s) *available; | |
7861 | ||
7862 | /* If we fail to get the set of available memory, then the | |
7863 | target does not support querying traceframe info, and so we | |
7864 | attempt reading from the traceframe anyway (assuming the | |
7865 | target implements the old QTro packet then). */ | |
7866 | if (traceframe_available_memory (&available, memaddr, len)) | |
7867 | { | |
7868 | struct cleanup *old_chain; | |
7869 | ||
7870 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7871 | ||
7872 | if (VEC_empty (mem_range_s, available) | |
7873 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7874 | { | |
7875 | enum target_xfer_status res; | |
7876 | ||
7877 | /* Don't read into the traceframe's available | |
7878 | memory. */ | |
7879 | if (!VEC_empty (mem_range_s, available)) | |
7880 | { | |
7881 | LONGEST oldlen = len; | |
7882 | ||
7883 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7884 | gdb_assert (len <= oldlen); | |
7885 | } | |
7886 | ||
7887 | do_cleanups (old_chain); | |
7888 | ||
7889 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7890 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7891 | len, unit_size, xfered_len); |
8acf9577 YQ |
7892 | if (res == TARGET_XFER_OK) |
7893 | return TARGET_XFER_OK; | |
7894 | else | |
7895 | { | |
7896 | /* No use trying further, we know some memory starting | |
7897 | at MEMADDR isn't available. */ | |
7898 | *xfered_len = len; | |
7899 | return TARGET_XFER_UNAVAILABLE; | |
7900 | } | |
7901 | } | |
7902 | ||
7903 | /* Don't try to read more than how much is available, in | |
7904 | case the target implements the deprecated QTro packet to | |
7905 | cater for older GDBs (the target's knowledge of read-only | |
7906 | sections may be outdated by now). */ | |
7907 | len = VEC_index (mem_range_s, available, 0)->length; | |
7908 | ||
7909 | do_cleanups (old_chain); | |
7910 | } | |
7911 | } | |
7912 | ||
124e13d9 | 7913 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7914 | } |
74531fed | 7915 | |
c906108c | 7916 | \f |
c906108c | 7917 | |
a76d924d DJ |
7918 | /* Sends a packet with content determined by the printf format string |
7919 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7920 | whether the packet was a success, a failure, or unknown. */ | |
7921 | ||
77b64a49 PA |
7922 | static enum packet_result remote_send_printf (const char *format, ...) |
7923 | ATTRIBUTE_PRINTF (1, 2); | |
7924 | ||
2c0b251b | 7925 | static enum packet_result |
a76d924d DJ |
7926 | remote_send_printf (const char *format, ...) |
7927 | { | |
7928 | struct remote_state *rs = get_remote_state (); | |
7929 | int max_size = get_remote_packet_size (); | |
a76d924d | 7930 | va_list ap; |
a744cf53 | 7931 | |
a76d924d DJ |
7932 | va_start (ap, format); |
7933 | ||
7934 | rs->buf[0] = '\0'; | |
7935 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7936 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7937 | |
7938 | if (putpkt (rs->buf) < 0) | |
7939 | error (_("Communication problem with target.")); | |
7940 | ||
7941 | rs->buf[0] = '\0'; | |
7942 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7943 | ||
7944 | return packet_check_result (rs->buf); | |
7945 | } | |
7946 | ||
7947 | static void | |
7948 | restore_remote_timeout (void *p) | |
7949 | { | |
7950 | int value = *(int *)p; | |
a744cf53 | 7951 | |
a76d924d DJ |
7952 | remote_timeout = value; |
7953 | } | |
7954 | ||
7955 | /* Flash writing can take quite some time. We'll set | |
7956 | effectively infinite timeout for flash operations. | |
7957 | In future, we'll need to decide on a better approach. */ | |
7958 | static const int remote_flash_timeout = 1000; | |
7959 | ||
7960 | static void | |
7961 | remote_flash_erase (struct target_ops *ops, | |
7962 | ULONGEST address, LONGEST length) | |
7963 | { | |
f5656ead | 7964 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7965 | int saved_remote_timeout = remote_timeout; |
7966 | enum packet_result ret; | |
a76d924d DJ |
7967 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7968 | &saved_remote_timeout); | |
a744cf53 | 7969 | |
a76d924d DJ |
7970 | remote_timeout = remote_flash_timeout; |
7971 | ||
7972 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7973 | phex (address, addr_size), |
a76d924d DJ |
7974 | phex (length, 4)); |
7975 | switch (ret) | |
7976 | { | |
7977 | case PACKET_UNKNOWN: | |
7978 | error (_("Remote target does not support flash erase")); | |
7979 | case PACKET_ERROR: | |
7980 | error (_("Error erasing flash with vFlashErase packet")); | |
7981 | default: | |
7982 | break; | |
7983 | } | |
7984 | ||
7985 | do_cleanups (back_to); | |
7986 | } | |
7987 | ||
9b409511 YQ |
7988 | static enum target_xfer_status |
7989 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7990 | ULONGEST length, ULONGEST *xfered_len, | |
7991 | const gdb_byte *data) | |
a76d924d DJ |
7992 | { |
7993 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7994 | enum target_xfer_status ret; |
a76d924d | 7995 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7996 | &saved_remote_timeout); |
a76d924d DJ |
7997 | |
7998 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7999 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 8000 | xfered_len,'X', 0); |
a76d924d DJ |
8001 | do_cleanups (back_to); |
8002 | ||
8003 | return ret; | |
8004 | } | |
8005 | ||
8006 | static void | |
8007 | remote_flash_done (struct target_ops *ops) | |
8008 | { | |
8009 | int saved_remote_timeout = remote_timeout; | |
8010 | int ret; | |
8011 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
8012 | &saved_remote_timeout); | |
8013 | ||
8014 | remote_timeout = remote_flash_timeout; | |
8015 | ret = remote_send_printf ("vFlashDone"); | |
8016 | do_cleanups (back_to); | |
8017 | ||
8018 | switch (ret) | |
8019 | { | |
8020 | case PACKET_UNKNOWN: | |
8021 | error (_("Remote target does not support vFlashDone")); | |
8022 | case PACKET_ERROR: | |
8023 | error (_("Error finishing flash operation")); | |
8024 | default: | |
8025 | break; | |
8026 | } | |
8027 | } | |
8028 | ||
c906108c | 8029 | static void |
fba45db2 | 8030 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8031 | { |
8032 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8033 | } | |
8034 | \f | |
8035 | /* Stuff for dealing with the packets which are part of this protocol. | |
8036 | See comment at top of file for details. */ | |
8037 | ||
1927e618 PA |
8038 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8039 | error to higher layers. Called when a serial error is detected. | |
8040 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8041 | the system error message for errno at function entry and final dot |
8042 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8043 | |
8044 | static void | |
8045 | unpush_and_perror (const char *string) | |
8046 | { | |
d6cb50a2 | 8047 | int saved_errno = errno; |
1927e618 PA |
8048 | |
8049 | remote_unpush_target (); | |
d6cb50a2 JK |
8050 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8051 | safe_strerror (saved_errno)); | |
1927e618 PA |
8052 | } |
8053 | ||
0876f84a | 8054 | /* Read a single character from the remote end. */ |
c906108c SS |
8055 | |
8056 | static int | |
fba45db2 | 8057 | readchar (int timeout) |
c906108c SS |
8058 | { |
8059 | int ch; | |
5d93a237 | 8060 | struct remote_state *rs = get_remote_state (); |
c906108c | 8061 | |
5d93a237 | 8062 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 8063 | |
2acceee2 | 8064 | if (ch >= 0) |
0876f84a | 8065 | return ch; |
2acceee2 JM |
8066 | |
8067 | switch ((enum serial_rc) ch) | |
c906108c SS |
8068 | { |
8069 | case SERIAL_EOF: | |
78a095c3 | 8070 | remote_unpush_target (); |
598d3636 | 8071 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8072 | /* no return */ |
c906108c | 8073 | case SERIAL_ERROR: |
1927e618 PA |
8074 | unpush_and_perror (_("Remote communication error. " |
8075 | "Target disconnected.")); | |
2acceee2 | 8076 | /* no return */ |
c906108c | 8077 | case SERIAL_TIMEOUT: |
2acceee2 | 8078 | break; |
c906108c | 8079 | } |
2acceee2 | 8080 | return ch; |
c906108c SS |
8081 | } |
8082 | ||
c33e31fd PA |
8083 | /* Wrapper for serial_write that closes the target and throws if |
8084 | writing fails. */ | |
8085 | ||
8086 | static void | |
8087 | remote_serial_write (const char *str, int len) | |
8088 | { | |
5d93a237 TT |
8089 | struct remote_state *rs = get_remote_state (); |
8090 | ||
8091 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8092 | { |
1927e618 PA |
8093 | unpush_and_perror (_("Remote communication error. " |
8094 | "Target disconnected.")); | |
c33e31fd PA |
8095 | } |
8096 | } | |
8097 | ||
6d820c5c DJ |
8098 | /* Send the command in *BUF to the remote machine, and read the reply |
8099 | into *BUF. Report an error if we get an error reply. Resize | |
8100 | *BUF using xrealloc if necessary to hold the result, and update | |
8101 | *SIZEOF_BUF. */ | |
c906108c SS |
8102 | |
8103 | static void | |
6d820c5c DJ |
8104 | remote_send (char **buf, |
8105 | long *sizeof_buf) | |
c906108c | 8106 | { |
6d820c5c | 8107 | putpkt (*buf); |
c2d11a7d | 8108 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8109 | |
6d820c5c DJ |
8110 | if ((*buf)[0] == 'E') |
8111 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8112 | } |
8113 | ||
6e5abd65 PA |
8114 | /* Return a pointer to an xmalloc'ed string representing an escaped |
8115 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
8116 | etc. The caller is responsible for releasing the returned | |
8117 | memory. */ | |
8118 | ||
8119 | static char * | |
8120 | escape_buffer (const char *buf, int n) | |
8121 | { | |
8122 | struct cleanup *old_chain; | |
8123 | struct ui_file *stb; | |
8124 | char *str; | |
6e5abd65 PA |
8125 | |
8126 | stb = mem_fileopen (); | |
8127 | old_chain = make_cleanup_ui_file_delete (stb); | |
8128 | ||
6ef284bd | 8129 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 8130 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
8131 | do_cleanups (old_chain); |
8132 | return str; | |
8133 | } | |
8134 | ||
c906108c SS |
8135 | /* Display a null-terminated packet on stdout, for debugging, using C |
8136 | string notation. */ | |
8137 | ||
8138 | static void | |
baa336ce | 8139 | print_packet (const char *buf) |
c906108c SS |
8140 | { |
8141 | puts_filtered ("\""); | |
43e526b9 | 8142 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8143 | puts_filtered ("\""); |
8144 | } | |
8145 | ||
8146 | int | |
baa336ce | 8147 | putpkt (const char *buf) |
c906108c SS |
8148 | { |
8149 | return putpkt_binary (buf, strlen (buf)); | |
8150 | } | |
8151 | ||
8152 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8153 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8154 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8155 | and for a possible /0 if we are debugging (remote_debug) and want |
8156 | to print the sent packet as a string. */ | |
c906108c SS |
8157 | |
8158 | static int | |
baa336ce | 8159 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8160 | { |
2d717e4f | 8161 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8162 | int i; |
8163 | unsigned char csum = 0; | |
224c3ddb | 8164 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8165 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8166 | |
c906108c SS |
8167 | int ch; |
8168 | int tcount = 0; | |
8169 | char *p; | |
dd61ec5c | 8170 | char *message; |
c906108c | 8171 | |
e24a49d8 PA |
8172 | /* Catch cases like trying to read memory or listing threads while |
8173 | we're waiting for a stop reply. The remote server wouldn't be | |
8174 | ready to handle this request, so we'd hang and timeout. We don't | |
8175 | have to worry about this in synchronous mode, because in that | |
8176 | case it's not possible to issue a command while the target is | |
74531fed PA |
8177 | running. This is not a problem in non-stop mode, because in that |
8178 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8179 | if (!target_is_non_stop_p () |
8180 | && target_is_async_p () | |
8181 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8182 | { |
8183 | error (_("Cannot execute this command while the target is running.\n" | |
8184 | "Use the \"interrupt\" command to stop the target\n" | |
8185 | "and then try again.")); | |
8186 | } | |
e24a49d8 | 8187 | |
2d717e4f DJ |
8188 | /* We're sending out a new packet. Make sure we don't look at a |
8189 | stale cached response. */ | |
8190 | rs->cached_wait_status = 0; | |
8191 | ||
c906108c SS |
8192 | /* Copy the packet into buffer BUF2, encapsulating it |
8193 | and giving it a checksum. */ | |
8194 | ||
c906108c SS |
8195 | p = buf2; |
8196 | *p++ = '$'; | |
8197 | ||
8198 | for (i = 0; i < cnt; i++) | |
8199 | { | |
8200 | csum += buf[i]; | |
8201 | *p++ = buf[i]; | |
8202 | } | |
8203 | *p++ = '#'; | |
8204 | *p++ = tohex ((csum >> 4) & 0xf); | |
8205 | *p++ = tohex (csum & 0xf); | |
8206 | ||
8207 | /* Send it over and over until we get a positive ack. */ | |
8208 | ||
8209 | while (1) | |
8210 | { | |
8211 | int started_error_output = 0; | |
8212 | ||
8213 | if (remote_debug) | |
8214 | { | |
6e5abd65 PA |
8215 | struct cleanup *old_chain; |
8216 | char *str; | |
8217 | ||
c906108c | 8218 | *p = '\0'; |
6e5abd65 PA |
8219 | str = escape_buffer (buf2, p - buf2); |
8220 | old_chain = make_cleanup (xfree, str); | |
8221 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 8222 | gdb_flush (gdb_stdlog); |
6e5abd65 | 8223 | do_cleanups (old_chain); |
c906108c | 8224 | } |
c33e31fd | 8225 | remote_serial_write (buf2, p - buf2); |
c906108c | 8226 | |
a6f3e723 SL |
8227 | /* If this is a no acks version of the remote protocol, send the |
8228 | packet and move on. */ | |
8229 | if (rs->noack_mode) | |
8230 | break; | |
8231 | ||
74531fed PA |
8232 | /* Read until either a timeout occurs (-2) or '+' is read. |
8233 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8234 | while (1) |
8235 | { | |
8236 | ch = readchar (remote_timeout); | |
8237 | ||
c5aa993b | 8238 | if (remote_debug) |
c906108c SS |
8239 | { |
8240 | switch (ch) | |
8241 | { | |
8242 | case '+': | |
1216fa2c | 8243 | case '-': |
c906108c SS |
8244 | case SERIAL_TIMEOUT: |
8245 | case '$': | |
74531fed | 8246 | case '%': |
c906108c SS |
8247 | if (started_error_output) |
8248 | { | |
8249 | putchar_unfiltered ('\n'); | |
8250 | started_error_output = 0; | |
8251 | } | |
8252 | } | |
8253 | } | |
8254 | ||
8255 | switch (ch) | |
8256 | { | |
8257 | case '+': | |
8258 | if (remote_debug) | |
0f71a2f6 | 8259 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8260 | do_cleanups (old_chain); |
c906108c | 8261 | return 1; |
1216fa2c AC |
8262 | case '-': |
8263 | if (remote_debug) | |
8264 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8265 | /* FALLTHROUGH */ |
c906108c | 8266 | case SERIAL_TIMEOUT: |
c5aa993b | 8267 | tcount++; |
c906108c | 8268 | if (tcount > 3) |
a5c0808e PA |
8269 | { |
8270 | do_cleanups (old_chain); | |
8271 | return 0; | |
8272 | } | |
23860348 | 8273 | break; /* Retransmit buffer. */ |
c906108c SS |
8274 | case '$': |
8275 | { | |
40e3f985 | 8276 | if (remote_debug) |
2bc416ba | 8277 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8278 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8279 | /* It's probably an old response sent because an ACK |
8280 | was lost. Gobble up the packet and ack it so it | |
8281 | doesn't get retransmitted when we resend this | |
8282 | packet. */ | |
6d820c5c | 8283 | skip_frame (); |
c33e31fd | 8284 | remote_serial_write ("+", 1); |
23860348 | 8285 | continue; /* Now, go look for +. */ |
c906108c | 8286 | } |
74531fed PA |
8287 | |
8288 | case '%': | |
8289 | { | |
8290 | int val; | |
8291 | ||
8292 | /* If we got a notification, handle it, and go back to looking | |
8293 | for an ack. */ | |
8294 | /* We've found the start of a notification. Now | |
8295 | collect the data. */ | |
8296 | val = read_frame (&rs->buf, &rs->buf_size); | |
8297 | if (val >= 0) | |
8298 | { | |
8299 | if (remote_debug) | |
8300 | { | |
6e5abd65 PA |
8301 | struct cleanup *old_chain; |
8302 | char *str; | |
8303 | ||
8304 | str = escape_buffer (rs->buf, val); | |
8305 | old_chain = make_cleanup (xfree, str); | |
8306 | fprintf_unfiltered (gdb_stdlog, | |
8307 | " Notification received: %s\n", | |
8308 | str); | |
8309 | do_cleanups (old_chain); | |
74531fed | 8310 | } |
5965e028 | 8311 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8312 | /* We're in sync now, rewait for the ack. */ |
8313 | tcount = 0; | |
8314 | } | |
8315 | else | |
8316 | { | |
8317 | if (remote_debug) | |
8318 | { | |
8319 | if (!started_error_output) | |
8320 | { | |
8321 | started_error_output = 1; | |
8322 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8323 | } | |
8324 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8325 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8326 | } | |
8327 | } | |
8328 | continue; | |
8329 | } | |
8330 | /* fall-through */ | |
c906108c SS |
8331 | default: |
8332 | if (remote_debug) | |
8333 | { | |
8334 | if (!started_error_output) | |
8335 | { | |
8336 | started_error_output = 1; | |
0f71a2f6 | 8337 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8338 | } |
0f71a2f6 | 8339 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8340 | } |
8341 | continue; | |
8342 | } | |
23860348 | 8343 | break; /* Here to retransmit. */ |
c906108c SS |
8344 | } |
8345 | ||
8346 | #if 0 | |
8347 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8348 | able to get out next time we call QUIT, without anything as |
8349 | violent as interrupt_query. If we want to provide a way out of | |
8350 | here without getting to the next QUIT, it should be based on | |
8351 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8352 | if (quit_flag) |
8353 | { | |
8354 | quit_flag = 0; | |
8355 | interrupt_query (); | |
8356 | } | |
8357 | #endif | |
8358 | } | |
a5c0808e PA |
8359 | |
8360 | do_cleanups (old_chain); | |
a6f3e723 | 8361 | return 0; |
c906108c SS |
8362 | } |
8363 | ||
6d820c5c DJ |
8364 | /* Come here after finding the start of a frame when we expected an |
8365 | ack. Do our best to discard the rest of this packet. */ | |
8366 | ||
8367 | static void | |
8368 | skip_frame (void) | |
8369 | { | |
8370 | int c; | |
8371 | ||
8372 | while (1) | |
8373 | { | |
8374 | c = readchar (remote_timeout); | |
8375 | switch (c) | |
8376 | { | |
8377 | case SERIAL_TIMEOUT: | |
8378 | /* Nothing we can do. */ | |
8379 | return; | |
8380 | case '#': | |
8381 | /* Discard the two bytes of checksum and stop. */ | |
8382 | c = readchar (remote_timeout); | |
8383 | if (c >= 0) | |
8384 | c = readchar (remote_timeout); | |
8385 | ||
8386 | return; | |
8387 | case '*': /* Run length encoding. */ | |
8388 | /* Discard the repeat count. */ | |
8389 | c = readchar (remote_timeout); | |
8390 | if (c < 0) | |
8391 | return; | |
8392 | break; | |
8393 | default: | |
8394 | /* A regular character. */ | |
8395 | break; | |
8396 | } | |
8397 | } | |
8398 | } | |
8399 | ||
c906108c | 8400 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8401 | into *BUF, verifying the checksum, length, and handling run-length |
8402 | compression. NUL terminate the buffer. If there is not enough room, | |
8403 | expand *BUF using xrealloc. | |
c906108c | 8404 | |
c2d11a7d JM |
8405 | Returns -1 on error, number of characters in buffer (ignoring the |
8406 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8407 | SERIAL status indications). */ |
c2d11a7d JM |
8408 | |
8409 | static long | |
6d820c5c DJ |
8410 | read_frame (char **buf_p, |
8411 | long *sizeof_buf) | |
c906108c SS |
8412 | { |
8413 | unsigned char csum; | |
c2d11a7d | 8414 | long bc; |
c906108c | 8415 | int c; |
6d820c5c | 8416 | char *buf = *buf_p; |
a6f3e723 | 8417 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8418 | |
8419 | csum = 0; | |
c2d11a7d | 8420 | bc = 0; |
c906108c SS |
8421 | |
8422 | while (1) | |
8423 | { | |
8424 | c = readchar (remote_timeout); | |
c906108c SS |
8425 | switch (c) |
8426 | { | |
8427 | case SERIAL_TIMEOUT: | |
8428 | if (remote_debug) | |
0f71a2f6 | 8429 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8430 | return -1; |
c906108c SS |
8431 | case '$': |
8432 | if (remote_debug) | |
0f71a2f6 JM |
8433 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8434 | gdb_stdlog); | |
23860348 | 8435 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8436 | case '#': |
8437 | { | |
8438 | unsigned char pktcsum; | |
e1b09194 AC |
8439 | int check_0 = 0; |
8440 | int check_1 = 0; | |
c906108c | 8441 | |
c2d11a7d | 8442 | buf[bc] = '\0'; |
c906108c | 8443 | |
e1b09194 AC |
8444 | check_0 = readchar (remote_timeout); |
8445 | if (check_0 >= 0) | |
8446 | check_1 = readchar (remote_timeout); | |
802188a7 | 8447 | |
e1b09194 AC |
8448 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8449 | { | |
8450 | if (remote_debug) | |
2bc416ba | 8451 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8452 | gdb_stdlog); |
e1b09194 AC |
8453 | return -1; |
8454 | } | |
8455 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8456 | { |
8457 | if (remote_debug) | |
2bc416ba | 8458 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8459 | gdb_stdlog); |
40e3f985 FN |
8460 | return -1; |
8461 | } | |
c906108c | 8462 | |
a6f3e723 SL |
8463 | /* Don't recompute the checksum; with no ack packets we |
8464 | don't have any way to indicate a packet retransmission | |
8465 | is necessary. */ | |
8466 | if (rs->noack_mode) | |
8467 | return bc; | |
8468 | ||
e1b09194 | 8469 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8470 | if (csum == pktcsum) |
c2d11a7d | 8471 | return bc; |
c906108c | 8472 | |
c5aa993b | 8473 | if (remote_debug) |
c906108c | 8474 | { |
6e5abd65 PA |
8475 | struct cleanup *old_chain; |
8476 | char *str; | |
8477 | ||
8478 | str = escape_buffer (buf, bc); | |
8479 | old_chain = make_cleanup (xfree, str); | |
8480 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8481 | "Bad checksum, sentsum=0x%x, " |
8482 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8483 | pktcsum, csum, str); |
8484 | do_cleanups (old_chain); | |
c906108c | 8485 | } |
c2d11a7d | 8486 | /* Number of characters in buffer ignoring trailing |
23860348 | 8487 | NULL. */ |
c2d11a7d | 8488 | return -1; |
c906108c | 8489 | } |
23860348 | 8490 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8491 | { |
8492 | int repeat; | |
c906108c | 8493 | |
a744cf53 | 8494 | csum += c; |
b4501125 AC |
8495 | c = readchar (remote_timeout); |
8496 | csum += c; | |
23860348 | 8497 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8498 | |
23860348 | 8499 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8500 | |
6d820c5c | 8501 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8502 | { |
6d820c5c DJ |
8503 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8504 | { | |
8505 | /* Make some more room in the buffer. */ | |
8506 | *sizeof_buf += repeat; | |
224c3ddb | 8507 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8508 | buf = *buf_p; |
8509 | } | |
8510 | ||
c2d11a7d JM |
8511 | memset (&buf[bc], buf[bc - 1], repeat); |
8512 | bc += repeat; | |
c2c6d25f JM |
8513 | continue; |
8514 | } | |
8515 | ||
c2d11a7d | 8516 | buf[bc] = '\0'; |
6d820c5c | 8517 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8518 | return -1; |
c2c6d25f | 8519 | } |
c906108c | 8520 | default: |
6d820c5c | 8521 | if (bc >= *sizeof_buf - 1) |
c906108c | 8522 | { |
6d820c5c DJ |
8523 | /* Make some more room in the buffer. */ |
8524 | *sizeof_buf *= 2; | |
224c3ddb | 8525 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 8526 | buf = *buf_p; |
c906108c SS |
8527 | } |
8528 | ||
6d820c5c DJ |
8529 | buf[bc++] = c; |
8530 | csum += c; | |
8531 | continue; | |
c906108c SS |
8532 | } |
8533 | } | |
8534 | } | |
8535 | ||
8536 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8537 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8538 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8539 | rather than timing out; this is used (in synchronous mode) to wait | |
8540 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8541 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8542 | don't have to change all the calls to getpkt to deal with the | |
8543 | return value, because at the moment I don't know what the right | |
23860348 | 8544 | thing to do it for those. */ |
c906108c | 8545 | void |
6d820c5c DJ |
8546 | getpkt (char **buf, |
8547 | long *sizeof_buf, | |
c2d11a7d | 8548 | int forever) |
d9fcf2fb JM |
8549 | { |
8550 | int timed_out; | |
8551 | ||
8552 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8553 | } | |
8554 | ||
8555 | ||
8556 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8557 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8558 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8559 | rather than timing out; this is used (in synchronous mode) to wait | |
8560 | for a target that is is executing user code to stop. If FOREVER == | |
8561 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8562 | indication of this to the caller. Otherwise return the number of |
8563 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8564 | enough reason to return to the caller. *IS_NOTIF is an output |
8565 | boolean that indicates whether *BUF holds a notification or not | |
8566 | (a regular packet). */ | |
74531fed | 8567 | |
3172dc30 | 8568 | static int |
74531fed | 8569 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8570 | int expecting_notif, int *is_notif) |
c906108c | 8571 | { |
2d717e4f | 8572 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8573 | int c; |
8574 | int tries; | |
8575 | int timeout; | |
df4b58fe | 8576 | int val = -1; |
c906108c | 8577 | |
2d717e4f DJ |
8578 | /* We're reading a new response. Make sure we don't look at a |
8579 | previously cached response. */ | |
8580 | rs->cached_wait_status = 0; | |
8581 | ||
6d820c5c | 8582 | strcpy (*buf, "timeout"); |
c906108c SS |
8583 | |
8584 | if (forever) | |
74531fed PA |
8585 | timeout = watchdog > 0 ? watchdog : -1; |
8586 | else if (expecting_notif) | |
8587 | timeout = 0; /* There should already be a char in the buffer. If | |
8588 | not, bail out. */ | |
c906108c SS |
8589 | else |
8590 | timeout = remote_timeout; | |
8591 | ||
8592 | #define MAX_TRIES 3 | |
8593 | ||
74531fed PA |
8594 | /* Process any number of notifications, and then return when |
8595 | we get a packet. */ | |
8596 | for (;;) | |
c906108c | 8597 | { |
d9c43928 | 8598 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8599 | times. */ |
8600 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8601 | { |
74531fed PA |
8602 | /* This can loop forever if the remote side sends us |
8603 | characters continuously, but if it pauses, we'll get | |
8604 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8605 | we'll count that as a retry. | |
8606 | ||
8607 | Note that even when forever is set, we will only wait | |
8608 | forever prior to the start of a packet. After that, we | |
8609 | expect characters to arrive at a brisk pace. They should | |
8610 | show up within remote_timeout intervals. */ | |
8611 | do | |
8612 | c = readchar (timeout); | |
8613 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8614 | |
8615 | if (c == SERIAL_TIMEOUT) | |
8616 | { | |
74531fed PA |
8617 | if (expecting_notif) |
8618 | return -1; /* Don't complain, it's normal to not get | |
8619 | anything in this case. */ | |
8620 | ||
23860348 | 8621 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8622 | { |
2acceee2 | 8623 | QUIT; |
78a095c3 | 8624 | remote_unpush_target (); |
598d3636 JK |
8625 | throw_error (TARGET_CLOSE_ERROR, |
8626 | _("Watchdog timeout has expired. " | |
8627 | "Target detached.")); | |
c906108c | 8628 | } |
c906108c | 8629 | if (remote_debug) |
0f71a2f6 | 8630 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8631 | } |
74531fed PA |
8632 | else |
8633 | { | |
8634 | /* We've found the start of a packet or notification. | |
8635 | Now collect the data. */ | |
8636 | val = read_frame (buf, sizeof_buf); | |
8637 | if (val >= 0) | |
8638 | break; | |
8639 | } | |
8640 | ||
c33e31fd | 8641 | remote_serial_write ("-", 1); |
c906108c | 8642 | } |
c906108c | 8643 | |
74531fed PA |
8644 | if (tries > MAX_TRIES) |
8645 | { | |
8646 | /* We have tried hard enough, and just can't receive the | |
8647 | packet/notification. Give up. */ | |
8648 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8649 | |
74531fed PA |
8650 | /* Skip the ack char if we're in no-ack mode. */ |
8651 | if (!rs->noack_mode) | |
c33e31fd | 8652 | remote_serial_write ("+", 1); |
74531fed PA |
8653 | return -1; |
8654 | } | |
c906108c | 8655 | |
74531fed PA |
8656 | /* If we got an ordinary packet, return that to our caller. */ |
8657 | if (c == '$') | |
c906108c SS |
8658 | { |
8659 | if (remote_debug) | |
43e526b9 | 8660 | { |
6e5abd65 PA |
8661 | struct cleanup *old_chain; |
8662 | char *str; | |
8663 | ||
8664 | str = escape_buffer (*buf, val); | |
8665 | old_chain = make_cleanup (xfree, str); | |
8666 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8667 | do_cleanups (old_chain); | |
43e526b9 | 8668 | } |
a6f3e723 SL |
8669 | |
8670 | /* Skip the ack char if we're in no-ack mode. */ | |
8671 | if (!rs->noack_mode) | |
c33e31fd | 8672 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8673 | if (is_notif != NULL) |
8674 | *is_notif = 0; | |
0876f84a | 8675 | return val; |
c906108c SS |
8676 | } |
8677 | ||
74531fed PA |
8678 | /* If we got a notification, handle it, and go back to looking |
8679 | for a packet. */ | |
8680 | else | |
8681 | { | |
8682 | gdb_assert (c == '%'); | |
8683 | ||
8684 | if (remote_debug) | |
8685 | { | |
6e5abd65 PA |
8686 | struct cleanup *old_chain; |
8687 | char *str; | |
8688 | ||
8689 | str = escape_buffer (*buf, val); | |
8690 | old_chain = make_cleanup (xfree, str); | |
8691 | fprintf_unfiltered (gdb_stdlog, | |
8692 | " Notification received: %s\n", | |
8693 | str); | |
8694 | do_cleanups (old_chain); | |
74531fed | 8695 | } |
fee9eda9 YQ |
8696 | if (is_notif != NULL) |
8697 | *is_notif = 1; | |
c906108c | 8698 | |
5965e028 | 8699 | handle_notification (rs->notif_state, *buf); |
c906108c | 8700 | |
74531fed | 8701 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8702 | |
74531fed | 8703 | if (expecting_notif) |
fee9eda9 | 8704 | return val; |
74531fed PA |
8705 | } |
8706 | } | |
8707 | } | |
8708 | ||
8709 | static int | |
8710 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8711 | { | |
fee9eda9 | 8712 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8713 | } |
8714 | ||
8715 | static int | |
fee9eda9 YQ |
8716 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8717 | int *is_notif) | |
74531fed | 8718 | { |
fee9eda9 YQ |
8719 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8720 | is_notif); | |
c906108c | 8721 | } |
74531fed | 8722 | |
cbb8991c DB |
8723 | /* Check whether EVENT is a fork event for the process specified |
8724 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8725 | ||
8726 | static int | |
8727 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8728 | QUEUE_ITER (stop_reply_p) *iter, | |
8729 | stop_reply_p event, | |
8730 | void *data) | |
8731 | { | |
19ba03f4 | 8732 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
8733 | int parent_pid = *(int *) param->input; |
8734 | ||
8735 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8736 | { | |
8737 | struct remote_state *rs = get_remote_state (); | |
8738 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8739 | int res; | |
8740 | ||
8741 | res = remote_vkill (child_pid, rs); | |
8742 | if (res != 0) | |
8743 | error (_("Can't kill fork child process %d"), child_pid); | |
8744 | } | |
8745 | ||
8746 | return 1; | |
8747 | } | |
8748 | ||
8749 | /* Kill any new fork children of process PID that haven't been | |
8750 | processed by follow_fork. */ | |
8751 | ||
8752 | static void | |
8753 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8754 | { | |
8755 | struct thread_info *thread; | |
8756 | struct notif_client *notif = ¬if_client_stop; | |
8757 | struct queue_iter_param param; | |
8758 | ||
8759 | /* Kill the fork child threads of any threads in process PID | |
8760 | that are stopped at a fork event. */ | |
8761 | ALL_NON_EXITED_THREADS (thread) | |
8762 | { | |
8763 | struct target_waitstatus *ws = &thread->pending_follow; | |
8764 | ||
8765 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8766 | { | |
8767 | struct remote_state *rs = get_remote_state (); | |
8768 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8769 | int res; | |
8770 | ||
8771 | res = remote_vkill (child_pid, rs); | |
8772 | if (res != 0) | |
8773 | error (_("Can't kill fork child process %d"), child_pid); | |
8774 | } | |
8775 | } | |
8776 | ||
8777 | /* Check for any pending fork events (not reported or processed yet) | |
8778 | in process PID and kill those fork child threads as well. */ | |
8779 | remote_notif_get_pending_events (notif); | |
8780 | param.input = &pid; | |
8781 | param.output = NULL; | |
8782 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8783 | kill_child_of_pending_fork, ¶m); | |
8784 | } | |
8785 | ||
c906108c SS |
8786 | \f |
8787 | static void | |
7d85a9c0 | 8788 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8789 | { |
0fdf84ca PA |
8790 | |
8791 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8792 | aren't on speaking terms with the remote system. */ |
492d29ea | 8793 | TRY |
0fdf84ca PA |
8794 | { |
8795 | putpkt ("k"); | |
8796 | } | |
492d29ea | 8797 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8798 | { |
8799 | if (ex.error == TARGET_CLOSE_ERROR) | |
8800 | { | |
8801 | /* If we got an (EOF) error that caused the target | |
8802 | to go away, then we're done, that's what we wanted. | |
8803 | "k" is susceptible to cause a premature EOF, given | |
8804 | that the remote server isn't actually required to | |
8805 | reply to "k", and it can happen that it doesn't | |
8806 | even get to reply ACK to the "k". */ | |
8807 | return; | |
8808 | } | |
8809 | ||
8810 | /* Otherwise, something went wrong. We didn't actually kill | |
8811 | the target. Just propagate the exception, and let the | |
8812 | user or higher layers decide what to do. */ | |
8813 | throw_exception (ex); | |
8814 | } | |
492d29ea | 8815 | END_CATCH |
43ff13b4 | 8816 | |
0fdf84ca PA |
8817 | /* We've killed the remote end, we get to mourn it. Since this is |
8818 | target remote, single-process, mourning the inferior also | |
8819 | unpushes remote_ops. */ | |
43ff13b4 JM |
8820 | target_mourn_inferior (); |
8821 | } | |
8822 | ||
82f73884 PA |
8823 | static int |
8824 | remote_vkill (int pid, struct remote_state *rs) | |
8825 | { | |
4082afcc | 8826 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8827 | return -1; |
8828 | ||
8829 | /* Tell the remote target to detach. */ | |
bba74b36 | 8830 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8831 | putpkt (rs->buf); |
8832 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8833 | ||
4082afcc PA |
8834 | switch (packet_ok (rs->buf, |
8835 | &remote_protocol_packets[PACKET_vKill])) | |
8836 | { | |
8837 | case PACKET_OK: | |
8838 | return 0; | |
8839 | case PACKET_ERROR: | |
8840 | return 1; | |
8841 | case PACKET_UNKNOWN: | |
8842 | return -1; | |
8843 | default: | |
8844 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8845 | } | |
82f73884 PA |
8846 | } |
8847 | ||
8848 | static void | |
7d85a9c0 | 8849 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8850 | { |
8851 | int res; | |
8852 | int pid = ptid_get_pid (inferior_ptid); | |
8853 | struct remote_state *rs = get_remote_state (); | |
8854 | ||
cbb8991c DB |
8855 | /* If we're stopped while forking and we haven't followed yet, kill the |
8856 | child task. We need to do this before killing the parent task | |
8857 | because if this is a vfork then the parent will be sleeping. */ | |
8858 | kill_new_fork_children (pid, rs); | |
8859 | ||
82f73884 | 8860 | res = remote_vkill (pid, rs); |
901f9912 | 8861 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8862 | { |
8863 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8864 | to specify the pid. */ | |
8865 | ||
8866 | putpkt ("k"); | |
8867 | #if 0 | |
8868 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8869 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8870 | res = 1; | |
8871 | #else | |
8872 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8873 | we do or not. For the existing stubs, kill is a noop. */ | |
8874 | res = 0; | |
8875 | #endif | |
8876 | } | |
8877 | ||
8878 | if (res != 0) | |
8879 | error (_("Can't kill process")); | |
8880 | ||
82f73884 PA |
8881 | target_mourn_inferior (); |
8882 | } | |
8883 | ||
c906108c | 8884 | static void |
20f796c9 | 8885 | remote_mourn (struct target_ops *target) |
c906108c SS |
8886 | { |
8887 | unpush_target (target); | |
ce5ce7ed | 8888 | |
8a2492ee PA |
8889 | /* remote_close takes care of doing most of the clean up. */ |
8890 | generic_mourn_inferior (); | |
c906108c SS |
8891 | } |
8892 | ||
2d717e4f | 8893 | static void |
20f796c9 | 8894 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8895 | { |
8896 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8897 | |
e24a49d8 PA |
8898 | /* In case we got here due to an error, but we're going to stay |
8899 | connected. */ | |
8900 | rs->waiting_for_stop_reply = 0; | |
8901 | ||
dc1981d7 PA |
8902 | /* If the current general thread belonged to the process we just |
8903 | detached from or has exited, the remote side current general | |
8904 | thread becomes undefined. Considering a case like this: | |
8905 | ||
8906 | - We just got here due to a detach. | |
8907 | - The process that we're detaching from happens to immediately | |
8908 | report a global breakpoint being hit in non-stop mode, in the | |
8909 | same thread we had selected before. | |
8910 | - GDB attaches to this process again. | |
8911 | - This event happens to be the next event we handle. | |
8912 | ||
8913 | GDB would consider that the current general thread didn't need to | |
8914 | be set on the stub side (with Hg), since for all it knew, | |
8915 | GENERAL_THREAD hadn't changed. | |
8916 | ||
8917 | Notice that although in all-stop mode, the remote server always | |
8918 | sets the current thread to the thread reporting the stop event, | |
8919 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8920 | not* change the current thread when reporting a breakpoint hit, | |
8921 | due to the decoupling of event reporting and event handling. | |
8922 | ||
8923 | To keep things simple, we always invalidate our notion of the | |
8924 | current thread. */ | |
47f8a51d | 8925 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8926 | |
2d717e4f DJ |
8927 | /* Unlike "target remote", we do not want to unpush the target; then |
8928 | the next time the user says "run", we won't be connected. */ | |
8929 | ||
48aa3c27 PA |
8930 | /* Call common code to mark the inferior as not running. */ |
8931 | generic_mourn_inferior (); | |
8932 | ||
d729566a | 8933 | if (!have_inferiors ()) |
2d717e4f | 8934 | { |
82f73884 PA |
8935 | if (!remote_multi_process_p (rs)) |
8936 | { | |
8937 | /* Check whether the target is running now - some remote stubs | |
8938 | automatically restart after kill. */ | |
8939 | putpkt ("?"); | |
8940 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8941 | ||
8942 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8943 | { | |
3e43a32a MS |
8944 | /* Assume that the target has been restarted. Set |
8945 | inferior_ptid so that bits of core GDB realizes | |
8946 | there's something here, e.g., so that the user can | |
8947 | say "kill" again. */ | |
82f73884 PA |
8948 | inferior_ptid = magic_null_ptid; |
8949 | } | |
82f73884 | 8950 | } |
2d717e4f DJ |
8951 | } |
8952 | } | |
c906108c | 8953 | |
03583c20 | 8954 | static int |
2bfc0540 | 8955 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8956 | { |
4082afcc | 8957 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8958 | } |
8959 | ||
8960 | static void | |
8961 | extended_remote_disable_randomization (int val) | |
8962 | { | |
8963 | struct remote_state *rs = get_remote_state (); | |
8964 | char *reply; | |
8965 | ||
bba74b36 YQ |
8966 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8967 | val); | |
03583c20 UW |
8968 | putpkt (rs->buf); |
8969 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8970 | if (*reply == '\0') | |
8971 | error (_("Target does not support QDisableRandomization.")); | |
8972 | if (strcmp (reply, "OK") != 0) | |
8973 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8974 | } | |
8975 | ||
2d717e4f DJ |
8976 | static int |
8977 | extended_remote_run (char *args) | |
8978 | { | |
8979 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8980 | int len; |
94585166 | 8981 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 8982 | |
2d717e4f DJ |
8983 | /* If the user has disabled vRun support, or we have detected that |
8984 | support is not available, do not try it. */ | |
4082afcc | 8985 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8986 | return -1; |
424163ea | 8987 | |
2d717e4f DJ |
8988 | strcpy (rs->buf, "vRun;"); |
8989 | len = strlen (rs->buf); | |
c906108c | 8990 | |
2d717e4f DJ |
8991 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8992 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8993 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8994 | strlen (remote_exec_file)); | |
2d717e4f | 8995 | |
d1a41061 | 8996 | gdb_assert (args != NULL); |
2d717e4f DJ |
8997 | if (*args) |
8998 | { | |
8999 | struct cleanup *back_to; | |
9000 | int i; | |
9001 | char **argv; | |
9002 | ||
d1a41061 | 9003 | argv = gdb_buildargv (args); |
6e366df1 | 9004 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
9005 | for (i = 0; argv[i] != NULL; i++) |
9006 | { | |
9007 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9008 | error (_("Argument list too long for run packet")); | |
9009 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9010 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9011 | strlen (argv[i])); | |
2d717e4f DJ |
9012 | } |
9013 | do_cleanups (back_to); | |
9014 | } | |
9015 | ||
9016 | rs->buf[len++] = '\0'; | |
9017 | ||
9018 | putpkt (rs->buf); | |
9019 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9020 | ||
4082afcc | 9021 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9022 | { |
4082afcc | 9023 | case PACKET_OK: |
3405876a | 9024 | /* We have a wait response. All is well. */ |
2d717e4f | 9025 | return 0; |
4082afcc PA |
9026 | case PACKET_UNKNOWN: |
9027 | return -1; | |
9028 | case PACKET_ERROR: | |
2d717e4f DJ |
9029 | if (remote_exec_file[0] == '\0') |
9030 | error (_("Running the default executable on the remote target failed; " | |
9031 | "try \"set remote exec-file\"?")); | |
9032 | else | |
9033 | error (_("Running \"%s\" on the remote target failed"), | |
9034 | remote_exec_file); | |
4082afcc PA |
9035 | default: |
9036 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9037 | } |
c906108c SS |
9038 | } |
9039 | ||
2d717e4f DJ |
9040 | /* In the extended protocol we want to be able to do things like |
9041 | "run" and have them basically work as expected. So we need | |
9042 | a special create_inferior function. We support changing the | |
9043 | executable file and the command line arguments, but not the | |
9044 | environment. */ | |
9045 | ||
43ff13b4 | 9046 | static void |
77a19445 TT |
9047 | extended_remote_create_inferior (struct target_ops *ops, |
9048 | char *exec_file, char *args, | |
9049 | char **env, int from_tty) | |
43ff13b4 | 9050 | { |
3405876a PA |
9051 | int run_worked; |
9052 | char *stop_reply; | |
9053 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9054 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9055 | |
43ff13b4 | 9056 | /* If running asynchronously, register the target file descriptor |
23860348 | 9057 | with the event loop. */ |
75c99385 | 9058 | if (target_can_async_p ()) |
6a3753b3 | 9059 | target_async (1); |
43ff13b4 | 9060 | |
03583c20 | 9061 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9062 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9063 | extended_remote_disable_randomization (disable_randomization); |
9064 | ||
43ff13b4 | 9065 | /* Now restart the remote server. */ |
3405876a PA |
9066 | run_worked = extended_remote_run (args) != -1; |
9067 | if (!run_worked) | |
2d717e4f DJ |
9068 | { |
9069 | /* vRun was not supported. Fail if we need it to do what the | |
9070 | user requested. */ | |
9071 | if (remote_exec_file[0]) | |
9072 | error (_("Remote target does not support \"set remote exec-file\"")); | |
9073 | if (args[0]) | |
9074 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 9075 | |
2d717e4f DJ |
9076 | /* Fall back to "R". */ |
9077 | extended_remote_restart (); | |
9078 | } | |
424163ea | 9079 | |
6c95b8df PA |
9080 | if (!have_inferiors ()) |
9081 | { | |
9082 | /* Clean up from the last time we ran, before we mark the target | |
9083 | running again. This will mark breakpoints uninserted, and | |
9084 | get_offsets may insert breakpoints. */ | |
9085 | init_thread_list (); | |
9086 | init_wait_for_inferior (); | |
9087 | } | |
45280a52 | 9088 | |
3405876a PA |
9089 | /* vRun's success return is a stop reply. */ |
9090 | stop_reply = run_worked ? rs->buf : NULL; | |
9091 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9092 | |
2d717e4f DJ |
9093 | /* Get updated offsets, if the stub uses qOffsets. */ |
9094 | get_offsets (); | |
2d717e4f | 9095 | } |
c906108c | 9096 | \f |
c5aa993b | 9097 | |
b775012e LM |
9098 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9099 | the list of conditions (in agent expression bytecode format), if any, the | |
9100 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9101 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9102 | |
9103 | static int | |
9104 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9105 | struct bp_target_info *bp_tgt, char *buf, |
9106 | char *buf_end) | |
b775012e LM |
9107 | { |
9108 | struct agent_expr *aexpr = NULL; | |
9109 | int i, ix; | |
9110 | char *pkt; | |
9111 | char *buf_start = buf; | |
9112 | ||
9113 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
9114 | return 0; | |
9115 | ||
9116 | buf += strlen (buf); | |
bba74b36 | 9117 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9118 | buf++; |
9119 | ||
9120 | /* Send conditions to the target and free the vector. */ | |
9121 | for (ix = 0; | |
9122 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
9123 | ix++) | |
9124 | { | |
bba74b36 | 9125 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
9126 | buf += strlen (buf); |
9127 | for (i = 0; i < aexpr->len; ++i) | |
9128 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9129 | *buf = '\0'; | |
9130 | } | |
b775012e LM |
9131 | return 0; |
9132 | } | |
9133 | ||
d3ce09f5 SS |
9134 | static void |
9135 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9136 | struct bp_target_info *bp_tgt, char *buf) | |
9137 | { | |
9138 | struct agent_expr *aexpr = NULL; | |
9139 | int i, ix; | |
9140 | ||
9141 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9142 | return; | |
9143 | ||
9144 | buf += strlen (buf); | |
9145 | ||
9146 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9147 | buf += strlen (buf); | |
9148 | ||
9149 | /* Concatenate all the agent expressions that are commands into the | |
9150 | cmds parameter. */ | |
9151 | for (ix = 0; | |
9152 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
9153 | ix++) | |
9154 | { | |
9155 | sprintf (buf, "X%x,", aexpr->len); | |
9156 | buf += strlen (buf); | |
9157 | for (i = 0; i < aexpr->len; ++i) | |
9158 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9159 | *buf = '\0'; | |
9160 | } | |
d3ce09f5 SS |
9161 | } |
9162 | ||
8181d85f DJ |
9163 | /* Insert a breakpoint. On targets that have software breakpoint |
9164 | support, we ask the remote target to do the work; on targets | |
9165 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9166 | |
9167 | static int | |
3db08215 MM |
9168 | remote_insert_breakpoint (struct target_ops *ops, |
9169 | struct gdbarch *gdbarch, | |
a6d9a66e | 9170 | struct bp_target_info *bp_tgt) |
c906108c | 9171 | { |
d471ea57 AC |
9172 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9173 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9174 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9175 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9176 | |
4082afcc | 9177 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9178 | { |
0d5ed153 | 9179 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9180 | struct remote_state *rs; |
bba74b36 | 9181 | char *p, *endbuf; |
7c0f6dcc | 9182 | int bpsize; |
b775012e | 9183 | struct condition_list *cond = NULL; |
4fff2411 | 9184 | |
28439a30 PA |
9185 | /* Make sure the remote is pointing at the right process, if |
9186 | necessary. */ | |
9187 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9188 | set_general_process (); | |
9189 | ||
a1dcb23a | 9190 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
9191 | |
9192 | rs = get_remote_state (); | |
9193 | p = rs->buf; | |
bba74b36 | 9194 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9195 | |
96baa820 JM |
9196 | *(p++) = 'Z'; |
9197 | *(p++) = '0'; | |
9198 | *(p++) = ','; | |
7c0f6dcc | 9199 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9200 | p += hexnumstr (p, addr); |
bba74b36 | 9201 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 9202 | |
efcc2da7 | 9203 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9204 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9205 | |
78eff0ec | 9206 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9207 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9208 | ||
6d820c5c DJ |
9209 | putpkt (rs->buf); |
9210 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9211 | |
6d820c5c | 9212 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9213 | { |
d471ea57 AC |
9214 | case PACKET_ERROR: |
9215 | return -1; | |
9216 | case PACKET_OK: | |
7c0f6dcc JL |
9217 | bp_tgt->placed_address = addr; |
9218 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9219 | return 0; |
9220 | case PACKET_UNKNOWN: | |
9221 | break; | |
96baa820 JM |
9222 | } |
9223 | } | |
c906108c | 9224 | |
0000e5cc PA |
9225 | /* If this breakpoint has target-side commands but this stub doesn't |
9226 | support Z0 packets, throw error. */ | |
9227 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9228 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
9229 | Target doesn't support breakpoints that have target side commands.")); | |
9230 | ||
3db08215 | 9231 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9232 | } |
9233 | ||
9234 | static int | |
3db08215 MM |
9235 | remote_remove_breakpoint (struct target_ops *ops, |
9236 | struct gdbarch *gdbarch, | |
a6d9a66e | 9237 | struct bp_target_info *bp_tgt) |
c906108c | 9238 | { |
8181d85f | 9239 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9240 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9241 | |
4082afcc | 9242 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9243 | { |
6d820c5c | 9244 | char *p = rs->buf; |
bba74b36 | 9245 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9246 | |
28439a30 PA |
9247 | /* Make sure the remote is pointing at the right process, if |
9248 | necessary. */ | |
9249 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9250 | set_general_process (); | |
9251 | ||
96baa820 JM |
9252 | *(p++) = 'z'; |
9253 | *(p++) = '0'; | |
9254 | *(p++) = ','; | |
9255 | ||
8181d85f DJ |
9256 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9257 | p += hexnumstr (p, addr); | |
bba74b36 | 9258 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 9259 | |
6d820c5c DJ |
9260 | putpkt (rs->buf); |
9261 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9262 | |
6d820c5c | 9263 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9264 | } |
9265 | ||
3db08215 | 9266 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9267 | } |
9268 | ||
f486487f | 9269 | static enum Z_packet_type |
d471ea57 AC |
9270 | watchpoint_to_Z_packet (int type) |
9271 | { | |
9272 | switch (type) | |
9273 | { | |
9274 | case hw_write: | |
bb858e6a | 9275 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9276 | break; |
9277 | case hw_read: | |
bb858e6a | 9278 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9279 | break; |
9280 | case hw_access: | |
bb858e6a | 9281 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9282 | break; |
9283 | default: | |
8e65ff28 | 9284 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9285 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9286 | } |
9287 | } | |
9288 | ||
3c3bea1c | 9289 | static int |
f486487f SM |
9290 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9291 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9292 | { |
d01949b6 | 9293 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9294 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9295 | char *p; |
d471ea57 | 9296 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9297 | |
4082afcc | 9298 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9299 | return 1; |
802188a7 | 9300 | |
28439a30 PA |
9301 | /* Make sure the remote is pointing at the right process, if |
9302 | necessary. */ | |
9303 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9304 | set_general_process (); | |
9305 | ||
bba74b36 | 9306 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9307 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9308 | addr = remote_address_masked (addr); |
9309 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9310 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9311 | |
6d820c5c DJ |
9312 | putpkt (rs->buf); |
9313 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9314 | |
6d820c5c | 9315 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9316 | { |
9317 | case PACKET_ERROR: | |
d471ea57 | 9318 | return -1; |
85d721b8 PA |
9319 | case PACKET_UNKNOWN: |
9320 | return 1; | |
d471ea57 AC |
9321 | case PACKET_OK: |
9322 | return 0; | |
9323 | } | |
8e65ff28 | 9324 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9325 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9326 | } |
9327 | ||
283002cf MR |
9328 | static int |
9329 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9330 | CORE_ADDR start, int length) | |
9331 | { | |
9332 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9333 | ||
9334 | return diff < length; | |
9335 | } | |
9336 | ||
d471ea57 | 9337 | |
3c3bea1c | 9338 | static int |
f486487f SM |
9339 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9340 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9341 | { |
d01949b6 | 9342 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9343 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9344 | char *p; |
d471ea57 AC |
9345 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9346 | ||
4082afcc | 9347 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9348 | return -1; |
802188a7 | 9349 | |
28439a30 PA |
9350 | /* Make sure the remote is pointing at the right process, if |
9351 | necessary. */ | |
9352 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9353 | set_general_process (); | |
9354 | ||
bba74b36 | 9355 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9356 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9357 | addr = remote_address_masked (addr); |
9358 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9359 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9360 | putpkt (rs->buf); |
9361 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9362 | |
6d820c5c | 9363 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9364 | { |
9365 | case PACKET_ERROR: | |
9366 | case PACKET_UNKNOWN: | |
9367 | return -1; | |
9368 | case PACKET_OK: | |
9369 | return 0; | |
9370 | } | |
8e65ff28 | 9371 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9372 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9373 | } |
9374 | ||
3c3bea1c | 9375 | |
501eef12 | 9376 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9377 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9378 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9379 | |
480a3f21 | 9380 | static int |
31568a15 TT |
9381 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9382 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9383 | { |
9384 | if (remote_hw_watchpoint_length_limit == 0) | |
9385 | return 0; | |
9386 | else if (remote_hw_watchpoint_length_limit < 0) | |
9387 | return 1; | |
9388 | else if (len <= remote_hw_watchpoint_length_limit) | |
9389 | return 1; | |
9390 | else | |
9391 | return 0; | |
9392 | } | |
9393 | ||
b9362cc7 | 9394 | static int |
5461485a | 9395 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9396 | enum bptype type, int cnt, int ot) |
96baa820 | 9397 | { |
3c3bea1c GS |
9398 | if (type == bp_hardware_breakpoint) |
9399 | { | |
9400 | if (remote_hw_breakpoint_limit == 0) | |
9401 | return 0; | |
501eef12 AC |
9402 | else if (remote_hw_breakpoint_limit < 0) |
9403 | return 1; | |
3c3bea1c GS |
9404 | else if (cnt <= remote_hw_breakpoint_limit) |
9405 | return 1; | |
9406 | } | |
9407 | else | |
9408 | { | |
9409 | if (remote_hw_watchpoint_limit == 0) | |
9410 | return 0; | |
501eef12 AC |
9411 | else if (remote_hw_watchpoint_limit < 0) |
9412 | return 1; | |
3c3bea1c GS |
9413 | else if (ot) |
9414 | return -1; | |
9415 | else if (cnt <= remote_hw_watchpoint_limit) | |
9416 | return 1; | |
9417 | } | |
9418 | return -1; | |
9419 | } | |
9420 | ||
f7e6eed5 PA |
9421 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9422 | ||
9423 | static int | |
9424 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9425 | { | |
799a2abe | 9426 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9427 | |
799a2abe PA |
9428 | return (thread->priv != NULL |
9429 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
9430 | } |
9431 | ||
9432 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9433 | remote. */ | |
9434 | ||
9435 | static int | |
9436 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9437 | { | |
9438 | struct remote_state *rs = get_remote_state (); | |
9439 | ||
9440 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
9441 | } | |
9442 | ||
9443 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9444 | ||
9445 | static int | |
9446 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9447 | { | |
799a2abe | 9448 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9449 | |
799a2abe PA |
9450 | return (thread->priv != NULL |
9451 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
9452 | } |
9453 | ||
9454 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9455 | remote. */ | |
9456 | ||
9457 | static int | |
9458 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9459 | { | |
9460 | struct remote_state *rs = get_remote_state (); | |
9461 | ||
9462 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
9463 | } | |
9464 | ||
b9362cc7 | 9465 | static int |
6a109b6b | 9466 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9467 | { |
799a2abe | 9468 | struct thread_info *thread = inferior_thread (); |
ee154bee | 9469 | |
799a2abe PA |
9470 | return (thread->priv != NULL |
9471 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
9472 | } |
9473 | ||
4aa7a7f5 JJ |
9474 | static int |
9475 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9476 | { |
799a2abe | 9477 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 9478 | |
799a2abe PA |
9479 | if (thread->priv != NULL |
9480 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 9481 | { |
799a2abe PA |
9482 | *addr_p = thread->priv->watch_data_address; |
9483 | return 1; | |
4aa7a7f5 JJ |
9484 | } |
9485 | ||
799a2abe | 9486 | return 0; |
3c3bea1c GS |
9487 | } |
9488 | ||
9489 | ||
9490 | static int | |
23a26771 | 9491 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9492 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9493 | { |
0d5ed153 | 9494 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9495 | struct remote_state *rs; |
bba74b36 | 9496 | char *p, *endbuf; |
dd61ec5c | 9497 | char *message; |
0d5ed153 | 9498 | int bpsize; |
802188a7 | 9499 | |
c8189ed1 | 9500 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9501 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9502 | |
0d5ed153 | 9503 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9504 | |
4082afcc | 9505 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9506 | return -1; |
2bc416ba | 9507 | |
28439a30 PA |
9508 | /* Make sure the remote is pointing at the right process, if |
9509 | necessary. */ | |
9510 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9511 | set_general_process (); | |
9512 | ||
4fff2411 JZ |
9513 | rs = get_remote_state (); |
9514 | p = rs->buf; | |
bba74b36 | 9515 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9516 | |
96baa820 JM |
9517 | *(p++) = 'Z'; |
9518 | *(p++) = '1'; | |
9519 | *(p++) = ','; | |
802188a7 | 9520 | |
0d5ed153 | 9521 | addr = remote_address_masked (addr); |
96baa820 | 9522 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9523 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9524 | |
efcc2da7 | 9525 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9526 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9527 | |
78eff0ec | 9528 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9529 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9530 | ||
6d820c5c DJ |
9531 | putpkt (rs->buf); |
9532 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9533 | |
6d820c5c | 9534 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9535 | { |
9536 | case PACKET_ERROR: | |
dd61ec5c MW |
9537 | if (rs->buf[1] == '.') |
9538 | { | |
9539 | message = strchr (rs->buf + 2, '.'); | |
9540 | if (message) | |
0316657e | 9541 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9542 | } |
9543 | return -1; | |
d471ea57 AC |
9544 | case PACKET_UNKNOWN: |
9545 | return -1; | |
9546 | case PACKET_OK: | |
0d5ed153 MR |
9547 | bp_tgt->placed_address = addr; |
9548 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9549 | return 0; |
9550 | } | |
8e65ff28 | 9551 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9552 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9553 | } |
9554 | ||
d471ea57 | 9555 | |
802188a7 | 9556 | static int |
a64dc96c | 9557 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9558 | struct bp_target_info *bp_tgt) |
96baa820 | 9559 | { |
8181d85f | 9560 | CORE_ADDR addr; |
d01949b6 | 9561 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9562 | char *p = rs->buf; |
bba74b36 | 9563 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9564 | |
4082afcc | 9565 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9566 | return -1; |
802188a7 | 9567 | |
28439a30 PA |
9568 | /* Make sure the remote is pointing at the right process, if |
9569 | necessary. */ | |
9570 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9571 | set_general_process (); | |
9572 | ||
96baa820 JM |
9573 | *(p++) = 'z'; |
9574 | *(p++) = '1'; | |
9575 | *(p++) = ','; | |
802188a7 | 9576 | |
8181d85f | 9577 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9578 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9579 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9580 | |
6d820c5c DJ |
9581 | putpkt (rs->buf); |
9582 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9583 | |
6d820c5c | 9584 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9585 | { |
9586 | case PACKET_ERROR: | |
9587 | case PACKET_UNKNOWN: | |
9588 | return -1; | |
9589 | case PACKET_OK: | |
9590 | return 0; | |
9591 | } | |
8e65ff28 | 9592 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9593 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9594 | } |
96baa820 | 9595 | |
4a5e7a5b PA |
9596 | /* Verify memory using the "qCRC:" request. */ |
9597 | ||
9598 | static int | |
9599 | remote_verify_memory (struct target_ops *ops, | |
9600 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9601 | { | |
9602 | struct remote_state *rs = get_remote_state (); | |
9603 | unsigned long host_crc, target_crc; | |
9604 | char *tmp; | |
9605 | ||
936d2992 PA |
9606 | /* It doesn't make sense to use qCRC if the remote target is |
9607 | connected but not running. */ | |
9608 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9609 | { | |
9610 | enum packet_result result; | |
28439a30 | 9611 | |
936d2992 PA |
9612 | /* Make sure the remote is pointing at the right process. */ |
9613 | set_general_process (); | |
4a5e7a5b | 9614 | |
936d2992 PA |
9615 | /* FIXME: assumes lma can fit into long. */ |
9616 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9617 | (long) lma, (long) size); | |
9618 | putpkt (rs->buf); | |
4a5e7a5b | 9619 | |
936d2992 PA |
9620 | /* Be clever; compute the host_crc before waiting for target |
9621 | reply. */ | |
9622 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9623 | ||
9624 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9625 | |
936d2992 PA |
9626 | result = packet_ok (rs->buf, |
9627 | &remote_protocol_packets[PACKET_qCRC]); | |
9628 | if (result == PACKET_ERROR) | |
9629 | return -1; | |
9630 | else if (result == PACKET_OK) | |
9631 | { | |
9632 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9633 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9634 | |
936d2992 PA |
9635 | return (host_crc == target_crc); |
9636 | } | |
9637 | } | |
4a5e7a5b | 9638 | |
936d2992 | 9639 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9640 | } |
9641 | ||
c906108c SS |
9642 | /* compare-sections command |
9643 | ||
9644 | With no arguments, compares each loadable section in the exec bfd | |
9645 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9646 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9647 | |
c906108c | 9648 | static void |
fba45db2 | 9649 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9650 | { |
9651 | asection *s; | |
c906108c | 9652 | struct cleanup *old_chain; |
948f8e3d | 9653 | gdb_byte *sectdata; |
ce359b09 | 9654 | const char *sectname; |
c906108c SS |
9655 | bfd_size_type size; |
9656 | bfd_vma lma; | |
9657 | int matched = 0; | |
9658 | int mismatched = 0; | |
4a5e7a5b | 9659 | int res; |
95cf3b38 | 9660 | int read_only = 0; |
c906108c SS |
9661 | |
9662 | if (!exec_bfd) | |
8a3fe4f8 | 9663 | error (_("command cannot be used without an exec file")); |
c906108c | 9664 | |
28439a30 PA |
9665 | /* Make sure the remote is pointing at the right process. */ |
9666 | set_general_process (); | |
9667 | ||
95cf3b38 DT |
9668 | if (args != NULL && strcmp (args, "-r") == 0) |
9669 | { | |
9670 | read_only = 1; | |
9671 | args = NULL; | |
9672 | } | |
9673 | ||
c5aa993b | 9674 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9675 | { |
9676 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9677 | continue; /* Skip non-loadable section. */ |
c906108c | 9678 | |
95cf3b38 DT |
9679 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9680 | continue; /* Skip writeable sections */ | |
9681 | ||
2c500098 | 9682 | size = bfd_get_section_size (s); |
c906108c | 9683 | if (size == 0) |
0df8b418 | 9684 | continue; /* Skip zero-length section. */ |
c906108c | 9685 | |
ce359b09 | 9686 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9687 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9688 | continue; /* Not the section selected by user. */ |
c906108c | 9689 | |
0df8b418 | 9690 | matched = 1; /* Do this section. */ |
c906108c | 9691 | lma = s->lma; |
c906108c | 9692 | |
224c3ddb | 9693 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 9694 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9695 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9696 | |
4a5e7a5b PA |
9697 | res = target_verify_memory (sectdata, lma, size); |
9698 | ||
9699 | if (res == -1) | |
5af949e3 | 9700 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9701 | paddress (target_gdbarch (), lma), |
9702 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9703 | |
5af949e3 | 9704 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9705 | paddress (target_gdbarch (), lma), |
9706 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9707 | if (res) |
c906108c SS |
9708 | printf_filtered ("matched.\n"); |
9709 | else | |
c5aa993b JM |
9710 | { |
9711 | printf_filtered ("MIS-MATCHED!\n"); | |
9712 | mismatched++; | |
9713 | } | |
c906108c SS |
9714 | |
9715 | do_cleanups (old_chain); | |
9716 | } | |
9717 | if (mismatched > 0) | |
936d2992 | 9718 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9719 | the loaded file\n")); |
c906108c | 9720 | if (args && !matched) |
a3f17187 | 9721 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9722 | } |
9723 | ||
0e7f50da UW |
9724 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9725 | into remote target. The number of bytes written to the remote | |
9726 | target is returned, or -1 for error. */ | |
9727 | ||
9b409511 | 9728 | static enum target_xfer_status |
0e7f50da UW |
9729 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9730 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9731 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9732 | struct packet_config *packet) |
9733 | { | |
9734 | int i, buf_len; | |
9735 | ULONGEST n; | |
0e7f50da UW |
9736 | struct remote_state *rs = get_remote_state (); |
9737 | int max_size = get_memory_write_packet_size (); | |
9738 | ||
9739 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9740 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9741 | |
9742 | /* Insert header. */ | |
9743 | i = snprintf (rs->buf, max_size, | |
9744 | "qXfer:%s:write:%s:%s:", | |
9745 | object_name, annex ? annex : "", | |
9746 | phex_nz (offset, sizeof offset)); | |
9747 | max_size -= (i + 1); | |
9748 | ||
9749 | /* Escape as much data as fits into rs->buf. */ | |
9750 | buf_len = remote_escape_output | |
124e13d9 | 9751 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9752 | |
9753 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9754 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9755 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9756 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9757 | |
9758 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9759 | |
9760 | *xfered_len = n; | |
9761 | return TARGET_XFER_OK; | |
0e7f50da UW |
9762 | } |
9763 | ||
0876f84a DJ |
9764 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9765 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9766 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9767 | The number of bytes read may be less than LEN without indicating an | |
9768 | EOF. PACKET is checked and updated to indicate whether the remote | |
9769 | target supports this object. */ | |
9770 | ||
9b409511 | 9771 | static enum target_xfer_status |
0876f84a DJ |
9772 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9773 | const char *annex, | |
9774 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9775 | ULONGEST *xfered_len, |
0876f84a DJ |
9776 | struct packet_config *packet) |
9777 | { | |
0876f84a | 9778 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9779 | LONGEST i, n, packet_len; |
9780 | ||
9781 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9782 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9783 | |
9784 | /* Check whether we've cached an end-of-object packet that matches | |
9785 | this request. */ | |
8e88304f | 9786 | if (rs->finished_object) |
0876f84a | 9787 | { |
8e88304f TT |
9788 | if (strcmp (object_name, rs->finished_object) == 0 |
9789 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9790 | && offset == rs->finished_offset) | |
9b409511 YQ |
9791 | return TARGET_XFER_EOF; |
9792 | ||
0876f84a DJ |
9793 | |
9794 | /* Otherwise, we're now reading something different. Discard | |
9795 | the cache. */ | |
8e88304f TT |
9796 | xfree (rs->finished_object); |
9797 | xfree (rs->finished_annex); | |
9798 | rs->finished_object = NULL; | |
9799 | rs->finished_annex = NULL; | |
0876f84a DJ |
9800 | } |
9801 | ||
9802 | /* Request only enough to fit in a single packet. The actual data | |
9803 | may not, since we don't know how much of it will need to be escaped; | |
9804 | the target is free to respond with slightly less data. We subtract | |
9805 | five to account for the response type and the protocol frame. */ | |
9806 | n = min (get_remote_packet_size () - 5, len); | |
9807 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9808 | object_name, annex ? annex : "", | |
9809 | phex_nz (offset, sizeof offset), | |
9810 | phex_nz (n, sizeof n)); | |
9811 | i = putpkt (rs->buf); | |
9812 | if (i < 0) | |
2ed4b548 | 9813 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9814 | |
9815 | rs->buf[0] = '\0'; | |
9816 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9817 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9818 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9819 | |
9820 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9821 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9822 | ||
9823 | /* 'm' means there is (or at least might be) more data after this | |
9824 | batch. That does not make sense unless there's at least one byte | |
9825 | of data in this reply. */ | |
9826 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9827 | error (_("Remote qXfer reply contained no data.")); | |
9828 | ||
9829 | /* Got some data. */ | |
bc20a4af PA |
9830 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9831 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9832 | |
9833 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9834 | or possibly empty. If we have the final block of a non-empty |
9835 | object, record this fact to bypass a subsequent partial read. */ | |
9836 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9837 | { |
8e88304f TT |
9838 | rs->finished_object = xstrdup (object_name); |
9839 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9840 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9841 | } |
9842 | ||
9b409511 YQ |
9843 | if (i == 0) |
9844 | return TARGET_XFER_EOF; | |
9845 | else | |
9846 | { | |
9847 | *xfered_len = i; | |
9848 | return TARGET_XFER_OK; | |
9849 | } | |
0876f84a DJ |
9850 | } |
9851 | ||
9b409511 | 9852 | static enum target_xfer_status |
4b8a223f | 9853 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9854 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9855 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9856 | ULONGEST *xfered_len) | |
c906108c | 9857 | { |
82f73884 | 9858 | struct remote_state *rs; |
c906108c | 9859 | int i; |
6d820c5c | 9860 | char *p2; |
1e3ff5ad | 9861 | char query_type; |
124e13d9 | 9862 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9863 | |
e6e4e701 | 9864 | set_remote_traceframe (); |
82f73884 PA |
9865 | set_general_thread (inferior_ptid); |
9866 | ||
9867 | rs = get_remote_state (); | |
9868 | ||
b2182ed2 | 9869 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9870 | if (object == TARGET_OBJECT_MEMORY) |
9871 | { | |
2d717e4f DJ |
9872 | /* If the remote target is connected but not running, we should |
9873 | pass this request down to a lower stratum (e.g. the executable | |
9874 | file). */ | |
9875 | if (!target_has_execution) | |
9b409511 | 9876 | return TARGET_XFER_EOF; |
2d717e4f | 9877 | |
21e3b9b9 | 9878 | if (writebuf != NULL) |
124e13d9 SM |
9879 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9880 | xfered_len); | |
21e3b9b9 | 9881 | else |
124e13d9 SM |
9882 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9883 | xfered_len); | |
21e3b9b9 DJ |
9884 | } |
9885 | ||
0df8b418 | 9886 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9887 | if (object == TARGET_OBJECT_SPU) |
9888 | { | |
9889 | if (readbuf) | |
9890 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9891 | xfered_len, &remote_protocol_packets |
9892 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9893 | else |
9894 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9895 | xfered_len, &remote_protocol_packets |
9896 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9897 | } |
9898 | ||
4aa995e1 PA |
9899 | /* Handle extra signal info using qxfer packets. */ |
9900 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9901 | { | |
9902 | if (readbuf) | |
9903 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9904 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9905 | [PACKET_qXfer_siginfo_read]); |
9906 | else | |
3e43a32a | 9907 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9908 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9909 | &remote_protocol_packets |
9910 | [PACKET_qXfer_siginfo_write]); | |
9911 | } | |
9912 | ||
0fb4aa4b PA |
9913 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9914 | { | |
9915 | if (readbuf) | |
3e43a32a | 9916 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9917 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9918 | &remote_protocol_packets |
9919 | [PACKET_qXfer_statictrace_read]); | |
9920 | else | |
2ed4b548 | 9921 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9922 | } |
9923 | ||
a76d924d DJ |
9924 | /* Only handle flash writes. */ |
9925 | if (writebuf != NULL) | |
9926 | { | |
9927 | LONGEST xfered; | |
9928 | ||
9929 | switch (object) | |
9930 | { | |
9931 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9932 | return remote_flash_write (ops, offset, len, xfered_len, |
9933 | writebuf); | |
a76d924d DJ |
9934 | |
9935 | default: | |
2ed4b548 | 9936 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9937 | } |
9938 | } | |
4b8a223f | 9939 | |
1e3ff5ad AC |
9940 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9941 | objects!!! Instead specify new query packets. */ | |
9942 | switch (object) | |
c906108c | 9943 | { |
1e3ff5ad AC |
9944 | case TARGET_OBJECT_AVR: |
9945 | query_type = 'R'; | |
9946 | break; | |
802188a7 RM |
9947 | |
9948 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9949 | gdb_assert (annex == NULL); |
9950 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9951 | xfered_len, |
0876f84a | 9952 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9953 | |
23181151 DJ |
9954 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9955 | return remote_read_qxfer | |
9b409511 | 9956 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9957 | &remote_protocol_packets[PACKET_qXfer_features]); |
9958 | ||
cfa9d6d9 DJ |
9959 | case TARGET_OBJECT_LIBRARIES: |
9960 | return remote_read_qxfer | |
9b409511 | 9961 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9962 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9963 | ||
2268b414 JK |
9964 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9965 | return remote_read_qxfer | |
9b409511 | 9966 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9967 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9968 | ||
fd79ecee DJ |
9969 | case TARGET_OBJECT_MEMORY_MAP: |
9970 | gdb_assert (annex == NULL); | |
9971 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9972 | xfered_len, |
fd79ecee DJ |
9973 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9974 | ||
07e059b5 VP |
9975 | case TARGET_OBJECT_OSDATA: |
9976 | /* Should only get here if we're connected. */ | |
5d93a237 | 9977 | gdb_assert (rs->remote_desc); |
07e059b5 | 9978 | return remote_read_qxfer |
9b409511 | 9979 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9980 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9981 | ||
dc146f7c VP |
9982 | case TARGET_OBJECT_THREADS: |
9983 | gdb_assert (annex == NULL); | |
9984 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9985 | xfered_len, |
dc146f7c VP |
9986 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9987 | ||
b3b9301e PA |
9988 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9989 | gdb_assert (annex == NULL); | |
9990 | return remote_read_qxfer | |
9b409511 | 9991 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9992 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9993 | |
9994 | case TARGET_OBJECT_FDPIC: | |
9995 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9996 | xfered_len, |
78d85199 | 9997 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9998 | |
9999 | case TARGET_OBJECT_OPENVMS_UIB: | |
10000 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10001 | xfered_len, |
169081d0 TG |
10002 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10003 | ||
9accd112 MM |
10004 | case TARGET_OBJECT_BTRACE: |
10005 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10006 | xfered_len, |
9accd112 MM |
10007 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10008 | ||
f4abbc16 MM |
10009 | case TARGET_OBJECT_BTRACE_CONF: |
10010 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10011 | len, xfered_len, | |
10012 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10013 | ||
c78fa86a GB |
10014 | case TARGET_OBJECT_EXEC_FILE: |
10015 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10016 | len, xfered_len, | |
10017 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10018 | ||
1e3ff5ad | 10019 | default: |
2ed4b548 | 10020 | return TARGET_XFER_E_IO; |
c906108c SS |
10021 | } |
10022 | ||
0df8b418 | 10023 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10024 | large enough let the caller deal with it. */ |
ea9c271d | 10025 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10026 | return TARGET_XFER_E_IO; |
ea9c271d | 10027 | len = get_remote_packet_size (); |
1e3ff5ad | 10028 | |
23860348 | 10029 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10030 | if (!rs->remote_desc) |
8a3fe4f8 | 10031 | error (_("remote query is only available after target open")); |
c906108c | 10032 | |
1e3ff5ad | 10033 | gdb_assert (annex != NULL); |
4b8a223f | 10034 | gdb_assert (readbuf != NULL); |
c906108c | 10035 | |
6d820c5c | 10036 | p2 = rs->buf; |
c906108c SS |
10037 | *p2++ = 'q'; |
10038 | *p2++ = query_type; | |
10039 | ||
23860348 MS |
10040 | /* We used one buffer char for the remote protocol q command and |
10041 | another for the query type. As the remote protocol encapsulation | |
10042 | uses 4 chars plus one extra in case we are debugging | |
10043 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10044 | string. */ | |
c906108c | 10045 | i = 0; |
ea9c271d | 10046 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10047 | { |
1e3ff5ad AC |
10048 | /* Bad caller may have sent forbidden characters. */ |
10049 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10050 | *p2++ = annex[i]; | |
c906108c SS |
10051 | i++; |
10052 | } | |
1e3ff5ad AC |
10053 | *p2 = '\0'; |
10054 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10055 | |
6d820c5c | 10056 | i = putpkt (rs->buf); |
c5aa993b | 10057 | if (i < 0) |
2ed4b548 | 10058 | return TARGET_XFER_E_IO; |
c906108c | 10059 | |
6d820c5c DJ |
10060 | getpkt (&rs->buf, &rs->buf_size, 0); |
10061 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10062 | |
9b409511 YQ |
10063 | *xfered_len = strlen ((char *) readbuf); |
10064 | return TARGET_XFER_OK; | |
c906108c SS |
10065 | } |
10066 | ||
08388c79 DE |
10067 | static int |
10068 | remote_search_memory (struct target_ops* ops, | |
10069 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10070 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10071 | CORE_ADDR *found_addrp) | |
10072 | { | |
f5656ead | 10073 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10074 | struct remote_state *rs = get_remote_state (); |
10075 | int max_size = get_memory_write_packet_size (); | |
10076 | struct packet_config *packet = | |
10077 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10078 | /* Number of packet bytes used to encode the pattern; |
10079 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10080 | int escaped_pattern_len; |
0df8b418 | 10081 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10082 | int used_pattern_len; |
10083 | int i; | |
10084 | int found; | |
10085 | ULONGEST found_addr; | |
10086 | ||
10087 | /* Don't go to the target if we don't have to. | |
10088 | This is done before checking packet->support to avoid the possibility that | |
10089 | a success for this edge case means the facility works in general. */ | |
10090 | if (pattern_len > search_space_len) | |
10091 | return 0; | |
10092 | if (pattern_len == 0) | |
10093 | { | |
10094 | *found_addrp = start_addr; | |
10095 | return 1; | |
10096 | } | |
10097 | ||
10098 | /* If we already know the packet isn't supported, fall back to the simple | |
10099 | way of searching memory. */ | |
10100 | ||
4082afcc | 10101 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10102 | { |
10103 | /* Target doesn't provided special support, fall back and use the | |
10104 | standard support (copy memory and do the search here). */ | |
10105 | return simple_search_memory (ops, start_addr, search_space_len, | |
10106 | pattern, pattern_len, found_addrp); | |
10107 | } | |
10108 | ||
28439a30 PA |
10109 | /* Make sure the remote is pointing at the right process. */ |
10110 | set_general_process (); | |
10111 | ||
08388c79 DE |
10112 | /* Insert header. */ |
10113 | i = snprintf (rs->buf, max_size, | |
10114 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10115 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10116 | phex_nz (search_space_len, sizeof (search_space_len))); |
10117 | max_size -= (i + 1); | |
10118 | ||
10119 | /* Escape as much data as fits into rs->buf. */ | |
10120 | escaped_pattern_len = | |
124e13d9 | 10121 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10122 | &used_pattern_len, max_size); |
10123 | ||
10124 | /* Bail if the pattern is too large. */ | |
10125 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10126 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10127 | |
10128 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10129 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10130 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10131 | { | |
10132 | /* The request may not have worked because the command is not | |
10133 | supported. If so, fall back to the simple way. */ | |
10134 | if (packet->support == PACKET_DISABLE) | |
10135 | { | |
10136 | return simple_search_memory (ops, start_addr, search_space_len, | |
10137 | pattern, pattern_len, found_addrp); | |
10138 | } | |
10139 | return -1; | |
10140 | } | |
10141 | ||
10142 | if (rs->buf[0] == '0') | |
10143 | found = 0; | |
10144 | else if (rs->buf[0] == '1') | |
10145 | { | |
10146 | found = 1; | |
10147 | if (rs->buf[1] != ',') | |
10e0fa18 | 10148 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10149 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10150 | *found_addrp = found_addr; | |
10151 | } | |
10152 | else | |
10e0fa18 | 10153 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10154 | |
10155 | return found; | |
10156 | } | |
10157 | ||
96baa820 | 10158 | static void |
a30bf1f1 | 10159 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10160 | struct ui_file *outbuf) |
96baa820 | 10161 | { |
d01949b6 | 10162 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10163 | char *p = rs->buf; |
96baa820 | 10164 | |
5d93a237 | 10165 | if (!rs->remote_desc) |
8a3fe4f8 | 10166 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10167 | |
23860348 | 10168 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10169 | if (command == NULL) |
10170 | command = ""; | |
10171 | ||
23860348 | 10172 | /* The query prefix. */ |
2e9f7625 DJ |
10173 | strcpy (rs->buf, "qRcmd,"); |
10174 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10175 | |
3e43a32a MS |
10176 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10177 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10178 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10179 | |
23860348 | 10180 | /* Encode the actual command. */ |
a30bf1f1 | 10181 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10182 | |
6d820c5c | 10183 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10184 | error (_("Communication problem with target.")); |
96baa820 JM |
10185 | |
10186 | /* get/display the response */ | |
10187 | while (1) | |
10188 | { | |
2e9f7625 DJ |
10189 | char *buf; |
10190 | ||
00bf0b85 | 10191 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10192 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10193 | rs->buf[0] = '\0'; |
5b37825d PW |
10194 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10195 | { | |
10196 | /* Timeout. Continue to (try to) read responses. | |
10197 | This is better than stopping with an error, assuming the stub | |
10198 | is still executing the (long) monitor command. | |
10199 | If needed, the user can interrupt gdb using C-c, obtaining | |
10200 | an effect similar to stop on timeout. */ | |
10201 | continue; | |
10202 | } | |
2e9f7625 | 10203 | buf = rs->buf; |
96baa820 | 10204 | if (buf[0] == '\0') |
8a3fe4f8 | 10205 | error (_("Target does not support this command.")); |
96baa820 JM |
10206 | if (buf[0] == 'O' && buf[1] != 'K') |
10207 | { | |
23860348 | 10208 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10209 | continue; |
10210 | } | |
10211 | if (strcmp (buf, "OK") == 0) | |
10212 | break; | |
7be570e7 JM |
10213 | if (strlen (buf) == 3 && buf[0] == 'E' |
10214 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10215 | { | |
8a3fe4f8 | 10216 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10217 | } |
96baa820 JM |
10218 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10219 | { | |
10220 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10221 | |
96baa820 JM |
10222 | fputc_unfiltered (c, outbuf); |
10223 | } | |
10224 | break; | |
10225 | } | |
10226 | } | |
10227 | ||
fd79ecee DJ |
10228 | static VEC(mem_region_s) * |
10229 | remote_memory_map (struct target_ops *ops) | |
10230 | { | |
10231 | VEC(mem_region_s) *result = NULL; | |
10232 | char *text = target_read_stralloc (¤t_target, | |
10233 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10234 | ||
10235 | if (text) | |
10236 | { | |
10237 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10238 | |
fd79ecee DJ |
10239 | result = parse_memory_map (text); |
10240 | do_cleanups (back_to); | |
10241 | } | |
10242 | ||
10243 | return result; | |
10244 | } | |
10245 | ||
c906108c | 10246 | static void |
fba45db2 | 10247 | packet_command (char *args, int from_tty) |
c906108c | 10248 | { |
d01949b6 | 10249 | struct remote_state *rs = get_remote_state (); |
c906108c | 10250 | |
5d93a237 | 10251 | if (!rs->remote_desc) |
8a3fe4f8 | 10252 | error (_("command can only be used with remote target")); |
c906108c | 10253 | |
c5aa993b | 10254 | if (!args) |
8a3fe4f8 | 10255 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10256 | |
10257 | puts_filtered ("sending: "); | |
10258 | print_packet (args); | |
10259 | puts_filtered ("\n"); | |
10260 | putpkt (args); | |
10261 | ||
6d820c5c | 10262 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10263 | puts_filtered ("received: "); |
6d820c5c | 10264 | print_packet (rs->buf); |
c906108c SS |
10265 | puts_filtered ("\n"); |
10266 | } | |
10267 | ||
10268 | #if 0 | |
23860348 | 10269 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10270 | |
a14ed312 | 10271 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10272 | |
a14ed312 | 10273 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10274 | |
a14ed312 | 10275 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10276 | |
a14ed312 | 10277 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10278 | |
23860348 | 10279 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10280 | |
a14ed312 | 10281 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10282 | |
23860348 | 10283 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10284 | |
a14ed312 | 10285 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10286 | |
a14ed312 | 10287 | static void init_remote_threadtests (void); |
c906108c | 10288 | |
23860348 | 10289 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10290 | |
10291 | static void | |
fba45db2 | 10292 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10293 | { |
10294 | int sample_thread = SAMPLE_THREAD; | |
10295 | ||
a3f17187 | 10296 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10297 | set_general_thread (sample_thread); |
c906108c SS |
10298 | } |
10299 | ||
10300 | ||
10301 | static void | |
fba45db2 | 10302 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10303 | { |
10304 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10305 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10306 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10307 | |
79d7f229 | 10308 | if (remote_thread_alive (ptid)) |
c906108c SS |
10309 | printf_filtered ("PASS: Thread alive test\n"); |
10310 | else | |
10311 | printf_filtered ("FAIL: Thread alive test\n"); | |
10312 | } | |
10313 | ||
23860348 | 10314 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10315 | |
10316 | void | |
fba45db2 | 10317 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10318 | { |
10319 | char hexid[20]; | |
10320 | ||
23860348 | 10321 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10322 | hexid[16] = 0; |
10323 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10324 | } | |
10325 | ||
10326 | static void | |
fba45db2 | 10327 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10328 | { |
10329 | int startflag = 1; | |
10330 | threadref nextthread; | |
10331 | int done, result_count; | |
10332 | threadref threadlist[3]; | |
10333 | ||
10334 | printf_filtered ("Remote Threadlist test\n"); | |
10335 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10336 | &result_count, &threadlist[0])) | |
10337 | printf_filtered ("FAIL: threadlist test\n"); | |
10338 | else | |
10339 | { | |
10340 | threadref *scan = threadlist; | |
10341 | threadref *limit = scan + result_count; | |
10342 | ||
10343 | while (scan < limit) | |
10344 | output_threadid (" thread ", scan++); | |
10345 | } | |
10346 | } | |
10347 | ||
10348 | void | |
fba45db2 | 10349 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10350 | { |
10351 | output_threadid ("Threadid: ", &info->threadid); | |
10352 | printf_filtered ("Name: %s\n ", info->shortname); | |
10353 | printf_filtered ("State: %s\n", info->display); | |
10354 | printf_filtered ("other: %s\n\n", info->more_display); | |
10355 | } | |
10356 | ||
10357 | int | |
fba45db2 | 10358 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10359 | { |
10360 | int result; | |
10361 | int set; | |
10362 | struct gdb_ext_thread_info threadinfo; | |
10363 | ||
10364 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10365 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10366 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10367 | display_thread_info (&threadinfo); | |
10368 | return result; | |
10369 | } | |
10370 | ||
10371 | static void | |
fba45db2 | 10372 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10373 | { |
10374 | int athread = SAMPLE_THREAD; | |
10375 | threadref thread; | |
10376 | int set; | |
10377 | ||
10378 | int_to_threadref (&thread, athread); | |
10379 | printf_filtered ("Remote Threadinfo test\n"); | |
10380 | if (!get_and_display_threadinfo (&thread)) | |
10381 | printf_filtered ("FAIL cannot get thread info\n"); | |
10382 | } | |
10383 | ||
10384 | static int | |
fba45db2 | 10385 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10386 | { |
10387 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10388 | return get_and_display_threadinfo (ref); | |
10389 | } | |
10390 | ||
10391 | static void | |
fba45db2 | 10392 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10393 | { |
10394 | printf_filtered ("Remote Threadlist update test\n"); | |
10395 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10396 | } | |
10397 | ||
10398 | static void | |
10399 | init_remote_threadtests (void) | |
10400 | { | |
3e43a32a MS |
10401 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10402 | _("Fetch and print the remote list of " | |
10403 | "thread identifiers, one pkt only")); | |
c906108c | 10404 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10405 | _("Fetch and display info about one thread")); |
c906108c | 10406 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10407 | _("Test setting to a different thread")); |
c906108c | 10408 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10409 | _("Iterate through updating all remote thread info")); |
c906108c | 10410 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10411 | _(" Remote thread alive test ")); |
c906108c SS |
10412 | } |
10413 | ||
10414 | #endif /* 0 */ | |
10415 | ||
f3fb8c85 MS |
10416 | /* Convert a thread ID to a string. Returns the string in a static |
10417 | buffer. */ | |
10418 | ||
10419 | static char * | |
117de6a9 | 10420 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10421 | { |
79d7f229 | 10422 | static char buf[64]; |
82f73884 | 10423 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10424 | |
7cee1e54 PA |
10425 | if (ptid_equal (ptid, null_ptid)) |
10426 | return normal_pid_to_str (ptid); | |
10427 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10428 | { |
10429 | /* Printing an inferior target id. */ | |
10430 | ||
10431 | /* When multi-process extensions are off, there's no way in the | |
10432 | remote protocol to know the remote process id, if there's any | |
10433 | at all. There's one exception --- when we're connected with | |
10434 | target extended-remote, and we manually attached to a process | |
10435 | with "attach PID". We don't record anywhere a flag that | |
10436 | allows us to distinguish that case from the case of | |
10437 | connecting with extended-remote and the stub already being | |
10438 | attached to a process, and reporting yes to qAttached, hence | |
10439 | no smart special casing here. */ | |
10440 | if (!remote_multi_process_p (rs)) | |
10441 | { | |
10442 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10443 | return buf; | |
10444 | } | |
10445 | ||
10446 | return normal_pid_to_str (ptid); | |
82f73884 | 10447 | } |
ecd0ada5 | 10448 | else |
79d7f229 | 10449 | { |
ecd0ada5 PA |
10450 | if (ptid_equal (magic_null_ptid, ptid)) |
10451 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 10452 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
10453 | if (ptid_get_lwp (ptid) == 0) |
10454 | return normal_pid_to_str (ptid); | |
10455 | else | |
10456 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10457 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10458 | else |
10459 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10460 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10461 | return buf; |
10462 | } | |
f3fb8c85 MS |
10463 | } |
10464 | ||
38691318 KB |
10465 | /* Get the address of the thread local variable in OBJFILE which is |
10466 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10467 | ||
10468 | static CORE_ADDR | |
117de6a9 PA |
10469 | remote_get_thread_local_address (struct target_ops *ops, |
10470 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10471 | { |
4082afcc | 10472 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10473 | { |
10474 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10475 | char *p = rs->buf; |
82f73884 | 10476 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10477 | enum packet_result result; |
38691318 KB |
10478 | |
10479 | strcpy (p, "qGetTLSAddr:"); | |
10480 | p += strlen (p); | |
82f73884 | 10481 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10482 | *p++ = ','; |
10483 | p += hexnumstr (p, offset); | |
10484 | *p++ = ','; | |
10485 | p += hexnumstr (p, lm); | |
10486 | *p++ = '\0'; | |
10487 | ||
6d820c5c DJ |
10488 | putpkt (rs->buf); |
10489 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10490 | result = packet_ok (rs->buf, |
10491 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10492 | if (result == PACKET_OK) |
38691318 KB |
10493 | { |
10494 | ULONGEST result; | |
10495 | ||
6d820c5c | 10496 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10497 | return result; |
10498 | } | |
571dd617 | 10499 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10500 | throw_error (TLS_GENERIC_ERROR, |
10501 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10502 | else |
109c3e39 AC |
10503 | throw_error (TLS_GENERIC_ERROR, |
10504 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10505 | } |
10506 | else | |
109c3e39 AC |
10507 | throw_error (TLS_GENERIC_ERROR, |
10508 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10509 | /* Not reached. */ |
10510 | return 0; | |
10511 | } | |
10512 | ||
711e434b PM |
10513 | /* Provide thread local base, i.e. Thread Information Block address. |
10514 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10515 | ||
70221824 | 10516 | static int |
bd7ae0f5 | 10517 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10518 | { |
4082afcc | 10519 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10520 | { |
10521 | struct remote_state *rs = get_remote_state (); | |
10522 | char *p = rs->buf; | |
10523 | char *endp = rs->buf + get_remote_packet_size (); | |
10524 | enum packet_result result; | |
10525 | ||
10526 | strcpy (p, "qGetTIBAddr:"); | |
10527 | p += strlen (p); | |
10528 | p = write_ptid (p, endp, ptid); | |
10529 | *p++ = '\0'; | |
10530 | ||
10531 | putpkt (rs->buf); | |
10532 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10533 | result = packet_ok (rs->buf, | |
10534 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10535 | if (result == PACKET_OK) | |
10536 | { | |
10537 | ULONGEST result; | |
10538 | ||
10539 | unpack_varlen_hex (rs->buf, &result); | |
10540 | if (addr) | |
10541 | *addr = (CORE_ADDR) result; | |
10542 | return 1; | |
10543 | } | |
10544 | else if (result == PACKET_UNKNOWN) | |
10545 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10546 | else | |
10547 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10548 | } | |
10549 | else | |
10550 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10551 | /* Not reached. */ | |
10552 | return 0; | |
10553 | } | |
10554 | ||
29709017 DJ |
10555 | /* Support for inferring a target description based on the current |
10556 | architecture and the size of a 'g' packet. While the 'g' packet | |
10557 | can have any size (since optional registers can be left off the | |
10558 | end), some sizes are easily recognizable given knowledge of the | |
10559 | approximate architecture. */ | |
10560 | ||
10561 | struct remote_g_packet_guess | |
10562 | { | |
10563 | int bytes; | |
10564 | const struct target_desc *tdesc; | |
10565 | }; | |
10566 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10567 | DEF_VEC_O(remote_g_packet_guess_s); | |
10568 | ||
10569 | struct remote_g_packet_data | |
10570 | { | |
10571 | VEC(remote_g_packet_guess_s) *guesses; | |
10572 | }; | |
10573 | ||
10574 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10575 | ||
10576 | static void * | |
10577 | remote_g_packet_data_init (struct obstack *obstack) | |
10578 | { | |
10579 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10580 | } | |
10581 | ||
10582 | void | |
10583 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10584 | const struct target_desc *tdesc) | |
10585 | { | |
10586 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10587 | = ((struct remote_g_packet_data *) |
10588 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
10589 | struct remote_g_packet_guess new_guess, *guess; |
10590 | int ix; | |
10591 | ||
10592 | gdb_assert (tdesc != NULL); | |
10593 | ||
10594 | for (ix = 0; | |
10595 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10596 | ix++) | |
10597 | if (guess->bytes == bytes) | |
10598 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10599 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10600 | bytes); |
10601 | ||
10602 | new_guess.bytes = bytes; | |
10603 | new_guess.tdesc = tdesc; | |
10604 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10605 | } | |
10606 | ||
d962ef82 DJ |
10607 | /* Return 1 if remote_read_description would do anything on this target |
10608 | and architecture, 0 otherwise. */ | |
10609 | ||
10610 | static int | |
10611 | remote_read_description_p (struct target_ops *target) | |
10612 | { | |
10613 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10614 | = ((struct remote_g_packet_data *) |
10615 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
10616 | |
10617 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10618 | return 1; | |
10619 | ||
10620 | return 0; | |
10621 | } | |
10622 | ||
29709017 DJ |
10623 | static const struct target_desc * |
10624 | remote_read_description (struct target_ops *target) | |
10625 | { | |
10626 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10627 | = ((struct remote_g_packet_data *) |
10628 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 10629 | |
d962ef82 DJ |
10630 | /* Do not try this during initial connection, when we do not know |
10631 | whether there is a running but stopped thread. */ | |
10632 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10633 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10634 | |
29709017 DJ |
10635 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10636 | { | |
10637 | struct remote_g_packet_guess *guess; | |
10638 | int ix; | |
10639 | int bytes = send_g_packet (); | |
10640 | ||
10641 | for (ix = 0; | |
10642 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10643 | ix++) | |
10644 | if (guess->bytes == bytes) | |
10645 | return guess->tdesc; | |
10646 | ||
10647 | /* We discard the g packet. A minor optimization would be to | |
10648 | hold on to it, and fill the register cache once we have selected | |
10649 | an architecture, but it's too tricky to do safely. */ | |
10650 | } | |
10651 | ||
2117c711 | 10652 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10653 | } |
10654 | ||
a6b151f1 DJ |
10655 | /* Remote file transfer support. This is host-initiated I/O, not |
10656 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10657 | ||
10658 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10659 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10660 | decrease *LEFT. Otherwise raise an error. */ | |
10661 | ||
10662 | static void | |
10663 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10664 | { | |
10665 | int len = strlen (string); | |
10666 | ||
10667 | if (len > *left) | |
10668 | error (_("Packet too long for target.")); | |
10669 | ||
10670 | memcpy (*buffer, string, len); | |
10671 | *buffer += len; | |
10672 | *left -= len; | |
10673 | ||
10674 | /* NUL-terminate the buffer as a convenience, if there is | |
10675 | room. */ | |
10676 | if (*left) | |
10677 | **buffer = '\0'; | |
10678 | } | |
10679 | ||
10680 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10681 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10682 | decrease *LEFT. Otherwise raise an error. */ | |
10683 | ||
10684 | static void | |
10685 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10686 | int len) | |
10687 | { | |
10688 | if (2 * len > *left) | |
10689 | error (_("Packet too long for target.")); | |
10690 | ||
10691 | bin2hex (bytes, *buffer, len); | |
10692 | *buffer += 2 * len; | |
10693 | *left -= 2 * len; | |
10694 | ||
10695 | /* NUL-terminate the buffer as a convenience, if there is | |
10696 | room. */ | |
10697 | if (*left) | |
10698 | **buffer = '\0'; | |
10699 | } | |
10700 | ||
10701 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10702 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10703 | decrease *LEFT. Otherwise raise an error. */ | |
10704 | ||
10705 | static void | |
10706 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10707 | { | |
10708 | int len = hexnumlen (value); | |
10709 | ||
10710 | if (len > *left) | |
10711 | error (_("Packet too long for target.")); | |
10712 | ||
10713 | hexnumstr (*buffer, value); | |
10714 | *buffer += len; | |
10715 | *left -= len; | |
10716 | ||
10717 | /* NUL-terminate the buffer as a convenience, if there is | |
10718 | room. */ | |
10719 | if (*left) | |
10720 | **buffer = '\0'; | |
10721 | } | |
10722 | ||
10723 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10724 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10725 | was included, and *ATTACHMENT to point to the start of the annex | |
10726 | if any. The length of the packet isn't needed here; there may | |
10727 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10728 | ||
10729 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10730 | -1 is returned, the other variables may not be initialized. */ | |
10731 | ||
10732 | static int | |
10733 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10734 | int *remote_errno, char **attachment) | |
10735 | { | |
10736 | char *p, *p2; | |
10737 | ||
10738 | *remote_errno = 0; | |
10739 | *attachment = NULL; | |
10740 | ||
10741 | if (buffer[0] != 'F') | |
10742 | return -1; | |
10743 | ||
10744 | errno = 0; | |
10745 | *retcode = strtol (&buffer[1], &p, 16); | |
10746 | if (errno != 0 || p == &buffer[1]) | |
10747 | return -1; | |
10748 | ||
10749 | /* Check for ",errno". */ | |
10750 | if (*p == ',') | |
10751 | { | |
10752 | errno = 0; | |
10753 | *remote_errno = strtol (p + 1, &p2, 16); | |
10754 | if (errno != 0 || p + 1 == p2) | |
10755 | return -1; | |
10756 | p = p2; | |
10757 | } | |
10758 | ||
10759 | /* Check for ";attachment". If there is no attachment, the | |
10760 | packet should end here. */ | |
10761 | if (*p == ';') | |
10762 | { | |
10763 | *attachment = p + 1; | |
10764 | return 0; | |
10765 | } | |
10766 | else if (*p == '\0') | |
10767 | return 0; | |
10768 | else | |
10769 | return -1; | |
10770 | } | |
10771 | ||
10772 | /* Send a prepared I/O packet to the target and read its response. | |
10773 | The prepared packet is in the global RS->BUF before this function | |
10774 | is called, and the answer is there when we return. | |
10775 | ||
10776 | COMMAND_BYTES is the length of the request to send, which may include | |
10777 | binary data. WHICH_PACKET is the packet configuration to check | |
10778 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10779 | is set to the error number and -1 is returned. Otherwise the value | |
10780 | returned by the function is returned. | |
10781 | ||
10782 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10783 | attachment is expected; an error will be reported if there's a | |
10784 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10785 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10786 | attachment's length. */ | |
10787 | ||
10788 | static int | |
10789 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10790 | int *remote_errno, char **attachment, | |
10791 | int *attachment_len) | |
10792 | { | |
10793 | struct remote_state *rs = get_remote_state (); | |
10794 | int ret, bytes_read; | |
10795 | char *attachment_tmp; | |
10796 | ||
5d93a237 | 10797 | if (!rs->remote_desc |
4082afcc | 10798 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10799 | { |
10800 | *remote_errno = FILEIO_ENOSYS; | |
10801 | return -1; | |
10802 | } | |
10803 | ||
10804 | putpkt_binary (rs->buf, command_bytes); | |
10805 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10806 | ||
10807 | /* If it timed out, something is wrong. Don't try to parse the | |
10808 | buffer. */ | |
10809 | if (bytes_read < 0) | |
10810 | { | |
10811 | *remote_errno = FILEIO_EINVAL; | |
10812 | return -1; | |
10813 | } | |
10814 | ||
10815 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10816 | { | |
10817 | case PACKET_ERROR: | |
10818 | *remote_errno = FILEIO_EINVAL; | |
10819 | return -1; | |
10820 | case PACKET_UNKNOWN: | |
10821 | *remote_errno = FILEIO_ENOSYS; | |
10822 | return -1; | |
10823 | case PACKET_OK: | |
10824 | break; | |
10825 | } | |
10826 | ||
10827 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10828 | &attachment_tmp)) | |
10829 | { | |
10830 | *remote_errno = FILEIO_EINVAL; | |
10831 | return -1; | |
10832 | } | |
10833 | ||
10834 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10835 | if ((attachment_tmp == NULL && attachment != NULL) | |
10836 | || (attachment_tmp != NULL && attachment == NULL)) | |
10837 | { | |
10838 | *remote_errno = FILEIO_EINVAL; | |
10839 | return -1; | |
10840 | } | |
10841 | ||
10842 | /* If an attachment was found, it must point into the packet buffer; | |
10843 | work out how many bytes there were. */ | |
10844 | if (attachment_tmp != NULL) | |
10845 | { | |
10846 | *attachment = attachment_tmp; | |
10847 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10848 | } | |
10849 | ||
10850 | return ret; | |
10851 | } | |
10852 | ||
80152258 PA |
10853 | /* Invalidate the readahead cache. */ |
10854 | ||
10855 | static void | |
10856 | readahead_cache_invalidate (void) | |
10857 | { | |
10858 | struct remote_state *rs = get_remote_state (); | |
10859 | ||
10860 | rs->readahead_cache.fd = -1; | |
10861 | } | |
10862 | ||
10863 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10864 | ||
10865 | static void | |
10866 | readahead_cache_invalidate_fd (int fd) | |
10867 | { | |
10868 | struct remote_state *rs = get_remote_state (); | |
10869 | ||
10870 | if (rs->readahead_cache.fd == fd) | |
10871 | rs->readahead_cache.fd = -1; | |
10872 | } | |
10873 | ||
15a201c8 GB |
10874 | /* Set the filesystem remote_hostio functions that take FILENAME |
10875 | arguments will use. Return 0 on success, or -1 if an error | |
10876 | occurs (and set *REMOTE_ERRNO). */ | |
10877 | ||
10878 | static int | |
10879 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10880 | { | |
10881 | struct remote_state *rs = get_remote_state (); | |
10882 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10883 | char *p = rs->buf; | |
10884 | int left = get_remote_packet_size () - 1; | |
10885 | char arg[9]; | |
10886 | int ret; | |
10887 | ||
10888 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10889 | return 0; | |
10890 | ||
10891 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10892 | return 0; | |
10893 | ||
10894 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10895 | ||
10896 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10897 | remote_buffer_add_string (&p, &left, arg); | |
10898 | ||
10899 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10900 | remote_errno, NULL, NULL); | |
10901 | ||
10902 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10903 | return 0; | |
10904 | ||
10905 | if (ret == 0) | |
10906 | rs->fs_pid = required_pid; | |
10907 | ||
10908 | return ret; | |
10909 | } | |
10910 | ||
12e2a5fd | 10911 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10912 | |
10913 | static int | |
cd897586 | 10914 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 10915 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
10916 | int flags, int mode, int warn_if_slow, |
10917 | int *remote_errno) | |
a6b151f1 DJ |
10918 | { |
10919 | struct remote_state *rs = get_remote_state (); | |
10920 | char *p = rs->buf; | |
10921 | int left = get_remote_packet_size () - 1; | |
10922 | ||
4313b8c0 GB |
10923 | if (warn_if_slow) |
10924 | { | |
10925 | static int warning_issued = 0; | |
10926 | ||
10927 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
10928 | filename); | |
10929 | ||
10930 | if (!warning_issued) | |
10931 | { | |
10932 | warning (_("File transfers from remote targets can be slow." | |
10933 | " Use \"set sysroot\" to access files locally" | |
10934 | " instead.")); | |
10935 | warning_issued = 1; | |
10936 | } | |
10937 | } | |
10938 | ||
15a201c8 GB |
10939 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10940 | return -1; | |
10941 | ||
a6b151f1 DJ |
10942 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10943 | ||
10944 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10945 | strlen (filename)); | |
10946 | remote_buffer_add_string (&p, &left, ","); | |
10947 | ||
10948 | remote_buffer_add_int (&p, &left, flags); | |
10949 | remote_buffer_add_string (&p, &left, ","); | |
10950 | ||
10951 | remote_buffer_add_int (&p, &left, mode); | |
10952 | ||
10953 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10954 | remote_errno, NULL, NULL); | |
10955 | } | |
10956 | ||
12e2a5fd | 10957 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10958 | |
10959 | static int | |
0d866f62 TT |
10960 | remote_hostio_pwrite (struct target_ops *self, |
10961 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10962 | ULONGEST offset, int *remote_errno) |
10963 | { | |
10964 | struct remote_state *rs = get_remote_state (); | |
10965 | char *p = rs->buf; | |
10966 | int left = get_remote_packet_size (); | |
10967 | int out_len; | |
10968 | ||
80152258 PA |
10969 | readahead_cache_invalidate_fd (fd); |
10970 | ||
a6b151f1 DJ |
10971 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
10972 | ||
10973 | remote_buffer_add_int (&p, &left, fd); | |
10974 | remote_buffer_add_string (&p, &left, ","); | |
10975 | ||
10976 | remote_buffer_add_int (&p, &left, offset); | |
10977 | remote_buffer_add_string (&p, &left, ","); | |
10978 | ||
124e13d9 | 10979 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10980 | get_remote_packet_size () - (p - rs->buf)); |
10981 | ||
10982 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10983 | remote_errno, NULL, NULL); | |
10984 | } | |
10985 | ||
80152258 PA |
10986 | /* Helper for the implementation of to_fileio_pread. Read the file |
10987 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
10988 | |
10989 | static int | |
80152258 PA |
10990 | remote_hostio_pread_vFile (struct target_ops *self, |
10991 | int fd, gdb_byte *read_buf, int len, | |
10992 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
10993 | { |
10994 | struct remote_state *rs = get_remote_state (); | |
10995 | char *p = rs->buf; | |
10996 | char *attachment; | |
10997 | int left = get_remote_packet_size (); | |
10998 | int ret, attachment_len; | |
10999 | int read_len; | |
11000 | ||
11001 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11002 | ||
11003 | remote_buffer_add_int (&p, &left, fd); | |
11004 | remote_buffer_add_string (&p, &left, ","); | |
11005 | ||
11006 | remote_buffer_add_int (&p, &left, len); | |
11007 | remote_buffer_add_string (&p, &left, ","); | |
11008 | ||
11009 | remote_buffer_add_int (&p, &left, offset); | |
11010 | ||
11011 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11012 | remote_errno, &attachment, | |
11013 | &attachment_len); | |
11014 | ||
11015 | if (ret < 0) | |
11016 | return ret; | |
11017 | ||
bc20a4af | 11018 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11019 | read_buf, len); |
11020 | if (read_len != ret) | |
11021 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11022 | ||
11023 | return ret; | |
11024 | } | |
11025 | ||
80152258 PA |
11026 | /* Serve pread from the readahead cache. Returns number of bytes |
11027 | read, or 0 if the request can't be served from the cache. */ | |
11028 | ||
11029 | static int | |
11030 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11031 | int fd, gdb_byte *read_buf, size_t len, | |
11032 | ULONGEST offset) | |
11033 | { | |
11034 | struct readahead_cache *cache = &rs->readahead_cache; | |
11035 | ||
11036 | if (cache->fd == fd | |
11037 | && cache->offset <= offset | |
11038 | && offset < cache->offset + cache->bufsize) | |
11039 | { | |
11040 | ULONGEST max = cache->offset + cache->bufsize; | |
11041 | ||
11042 | if (offset + len > max) | |
11043 | len = max - offset; | |
11044 | ||
11045 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11046 | return len; | |
11047 | } | |
11048 | ||
11049 | return 0; | |
11050 | } | |
11051 | ||
11052 | /* Implementation of to_fileio_pread. */ | |
11053 | ||
11054 | static int | |
11055 | remote_hostio_pread (struct target_ops *self, | |
11056 | int fd, gdb_byte *read_buf, int len, | |
11057 | ULONGEST offset, int *remote_errno) | |
11058 | { | |
11059 | int ret; | |
11060 | struct remote_state *rs = get_remote_state (); | |
11061 | struct readahead_cache *cache = &rs->readahead_cache; | |
11062 | ||
11063 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11064 | if (ret > 0) | |
11065 | { | |
11066 | cache->hit_count++; | |
11067 | ||
11068 | if (remote_debug) | |
11069 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11070 | pulongest (cache->hit_count)); | |
11071 | return ret; | |
11072 | } | |
11073 | ||
11074 | cache->miss_count++; | |
11075 | if (remote_debug) | |
11076 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11077 | pulongest (cache->miss_count)); | |
11078 | ||
11079 | cache->fd = fd; | |
11080 | cache->offset = offset; | |
11081 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11082 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11083 | |
11084 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11085 | cache->offset, remote_errno); | |
11086 | if (ret <= 0) | |
11087 | { | |
11088 | readahead_cache_invalidate_fd (fd); | |
11089 | return ret; | |
11090 | } | |
11091 | ||
11092 | cache->bufsize = ret; | |
11093 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11094 | } | |
11095 | ||
12e2a5fd | 11096 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11097 | |
11098 | static int | |
df39ea25 | 11099 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11100 | { |
11101 | struct remote_state *rs = get_remote_state (); | |
11102 | char *p = rs->buf; | |
11103 | int left = get_remote_packet_size () - 1; | |
11104 | ||
80152258 PA |
11105 | readahead_cache_invalidate_fd (fd); |
11106 | ||
a6b151f1 DJ |
11107 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11108 | ||
11109 | remote_buffer_add_int (&p, &left, fd); | |
11110 | ||
11111 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11112 | remote_errno, NULL, NULL); | |
11113 | } | |
11114 | ||
12e2a5fd | 11115 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11116 | |
11117 | static int | |
dbbca37d | 11118 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11119 | struct inferior *inf, const char *filename, |
11120 | int *remote_errno) | |
a6b151f1 DJ |
11121 | { |
11122 | struct remote_state *rs = get_remote_state (); | |
11123 | char *p = rs->buf; | |
11124 | int left = get_remote_packet_size () - 1; | |
11125 | ||
15a201c8 GB |
11126 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11127 | return -1; | |
11128 | ||
a6b151f1 DJ |
11129 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11130 | ||
11131 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11132 | strlen (filename)); | |
11133 | ||
11134 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11135 | remote_errno, NULL, NULL); | |
11136 | } | |
11137 | ||
12e2a5fd | 11138 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11139 | |
11140 | static char * | |
fab5aa7c | 11141 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11142 | struct inferior *inf, const char *filename, |
11143 | int *remote_errno) | |
b9e7b9c3 UW |
11144 | { |
11145 | struct remote_state *rs = get_remote_state (); | |
11146 | char *p = rs->buf; | |
11147 | char *attachment; | |
11148 | int left = get_remote_packet_size (); | |
11149 | int len, attachment_len; | |
11150 | int read_len; | |
11151 | char *ret; | |
11152 | ||
15a201c8 GB |
11153 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11154 | return NULL; | |
11155 | ||
b9e7b9c3 UW |
11156 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11157 | ||
11158 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11159 | strlen (filename)); | |
11160 | ||
11161 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11162 | remote_errno, &attachment, | |
11163 | &attachment_len); | |
11164 | ||
11165 | if (len < 0) | |
11166 | return NULL; | |
11167 | ||
224c3ddb | 11168 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11169 | |
bc20a4af PA |
11170 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11171 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11172 | if (read_len != len) |
11173 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11174 | ||
11175 | ret[len] = '\0'; | |
11176 | return ret; | |
11177 | } | |
11178 | ||
12e2a5fd | 11179 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11180 | |
11181 | static int | |
11182 | remote_hostio_fstat (struct target_ops *self, | |
11183 | int fd, struct stat *st, | |
11184 | int *remote_errno) | |
11185 | { | |
11186 | struct remote_state *rs = get_remote_state (); | |
11187 | char *p = rs->buf; | |
11188 | int left = get_remote_packet_size (); | |
11189 | int attachment_len, ret; | |
11190 | char *attachment; | |
11191 | struct fio_stat fst; | |
11192 | int read_len; | |
11193 | ||
464b0089 GB |
11194 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11195 | ||
11196 | remote_buffer_add_int (&p, &left, fd); | |
11197 | ||
11198 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11199 | remote_errno, &attachment, | |
11200 | &attachment_len); | |
11201 | if (ret < 0) | |
0a93529c | 11202 | { |
464b0089 GB |
11203 | if (*remote_errno != FILEIO_ENOSYS) |
11204 | return ret; | |
11205 | ||
0a93529c GB |
11206 | /* Strictly we should return -1, ENOSYS here, but when |
11207 | "set sysroot remote:" was implemented in August 2008 | |
11208 | BFD's need for a stat function was sidestepped with | |
11209 | this hack. This was not remedied until March 2015 | |
11210 | so we retain the previous behavior to avoid breaking | |
11211 | compatibility. | |
11212 | ||
11213 | Note that the memset is a March 2015 addition; older | |
11214 | GDBs set st_size *and nothing else* so the structure | |
11215 | would have garbage in all other fields. This might | |
11216 | break something but retaining the previous behavior | |
11217 | here would be just too wrong. */ | |
11218 | ||
11219 | memset (st, 0, sizeof (struct stat)); | |
11220 | st->st_size = INT_MAX; | |
11221 | return 0; | |
11222 | } | |
11223 | ||
0a93529c GB |
11224 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11225 | (gdb_byte *) &fst, sizeof (fst)); | |
11226 | ||
11227 | if (read_len != ret) | |
11228 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11229 | ||
11230 | if (read_len != sizeof (fst)) | |
11231 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11232 | read_len, (int) sizeof (fst)); | |
11233 | ||
11234 | remote_fileio_to_host_stat (&fst, st); | |
11235 | ||
11236 | return 0; | |
11237 | } | |
11238 | ||
12e2a5fd | 11239 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11240 | |
11241 | static int | |
11242 | remote_filesystem_is_local (struct target_ops *self) | |
11243 | { | |
11244 | /* Valgrind GDB presents itself as a remote target but works | |
11245 | on the local filesystem: it does not implement remote get | |
11246 | and users are not expected to set a sysroot. To handle | |
11247 | this case we treat the remote filesystem as local if the | |
11248 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11249 | does not support vFile:open. */ | |
a3be80c3 | 11250 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11251 | { |
11252 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11253 | ||
11254 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11255 | { | |
11256 | int fd, remote_errno; | |
11257 | ||
11258 | /* Try opening a file to probe support. The supplied | |
11259 | filename is irrelevant, we only care about whether | |
11260 | the stub recognizes the packet or not. */ | |
07c138c8 | 11261 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11262 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11263 | &remote_errno); |
11264 | ||
11265 | if (fd >= 0) | |
11266 | remote_hostio_close (self, fd, &remote_errno); | |
11267 | ||
11268 | ps = packet_support (PACKET_vFile_open); | |
11269 | } | |
11270 | ||
11271 | if (ps == PACKET_DISABLE) | |
11272 | { | |
11273 | static int warning_issued = 0; | |
11274 | ||
11275 | if (!warning_issued) | |
11276 | { | |
11277 | warning (_("remote target does not support file" | |
11278 | " transfer, attempting to access files" | |
11279 | " from local filesystem.")); | |
11280 | warning_issued = 1; | |
11281 | } | |
11282 | ||
11283 | return 1; | |
11284 | } | |
11285 | } | |
11286 | ||
11287 | return 0; | |
11288 | } | |
11289 | ||
a6b151f1 DJ |
11290 | static int |
11291 | remote_fileio_errno_to_host (int errnum) | |
11292 | { | |
11293 | switch (errnum) | |
11294 | { | |
11295 | case FILEIO_EPERM: | |
11296 | return EPERM; | |
11297 | case FILEIO_ENOENT: | |
11298 | return ENOENT; | |
11299 | case FILEIO_EINTR: | |
11300 | return EINTR; | |
11301 | case FILEIO_EIO: | |
11302 | return EIO; | |
11303 | case FILEIO_EBADF: | |
11304 | return EBADF; | |
11305 | case FILEIO_EACCES: | |
11306 | return EACCES; | |
11307 | case FILEIO_EFAULT: | |
11308 | return EFAULT; | |
11309 | case FILEIO_EBUSY: | |
11310 | return EBUSY; | |
11311 | case FILEIO_EEXIST: | |
11312 | return EEXIST; | |
11313 | case FILEIO_ENODEV: | |
11314 | return ENODEV; | |
11315 | case FILEIO_ENOTDIR: | |
11316 | return ENOTDIR; | |
11317 | case FILEIO_EISDIR: | |
11318 | return EISDIR; | |
11319 | case FILEIO_EINVAL: | |
11320 | return EINVAL; | |
11321 | case FILEIO_ENFILE: | |
11322 | return ENFILE; | |
11323 | case FILEIO_EMFILE: | |
11324 | return EMFILE; | |
11325 | case FILEIO_EFBIG: | |
11326 | return EFBIG; | |
11327 | case FILEIO_ENOSPC: | |
11328 | return ENOSPC; | |
11329 | case FILEIO_ESPIPE: | |
11330 | return ESPIPE; | |
11331 | case FILEIO_EROFS: | |
11332 | return EROFS; | |
11333 | case FILEIO_ENOSYS: | |
11334 | return ENOSYS; | |
11335 | case FILEIO_ENAMETOOLONG: | |
11336 | return ENAMETOOLONG; | |
11337 | } | |
11338 | return -1; | |
11339 | } | |
11340 | ||
11341 | static char * | |
11342 | remote_hostio_error (int errnum) | |
11343 | { | |
11344 | int host_error = remote_fileio_errno_to_host (errnum); | |
11345 | ||
11346 | if (host_error == -1) | |
11347 | error (_("Unknown remote I/O error %d"), errnum); | |
11348 | else | |
11349 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11350 | } | |
11351 | ||
a6b151f1 DJ |
11352 | static void |
11353 | remote_hostio_close_cleanup (void *opaque) | |
11354 | { | |
11355 | int fd = *(int *) opaque; | |
11356 | int remote_errno; | |
11357 | ||
df39ea25 | 11358 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11359 | } |
11360 | ||
11361 | void | |
11362 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11363 | { | |
11364 | struct cleanup *back_to, *close_cleanup; | |
11365 | int retcode, fd, remote_errno, bytes, io_size; | |
11366 | FILE *file; | |
11367 | gdb_byte *buffer; | |
11368 | int bytes_in_buffer; | |
11369 | int saw_eof; | |
11370 | ULONGEST offset; | |
5d93a237 | 11371 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11372 | |
5d93a237 | 11373 | if (!rs->remote_desc) |
a6b151f1 DJ |
11374 | error (_("command can only be used with remote target")); |
11375 | ||
614c279d | 11376 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11377 | if (file == NULL) |
11378 | perror_with_name (local_file); | |
7c8a8b04 | 11379 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11380 | |
07c138c8 | 11381 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11382 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11383 | | FILEIO_O_TRUNC), |
4313b8c0 | 11384 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11385 | if (fd == -1) |
11386 | remote_hostio_error (remote_errno); | |
11387 | ||
11388 | /* Send up to this many bytes at once. They won't all fit in the | |
11389 | remote packet limit, so we'll transfer slightly fewer. */ | |
11390 | io_size = get_remote_packet_size (); | |
224c3ddb | 11391 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11392 | make_cleanup (xfree, buffer); |
11393 | ||
11394 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11395 | ||
11396 | bytes_in_buffer = 0; | |
11397 | saw_eof = 0; | |
11398 | offset = 0; | |
11399 | while (bytes_in_buffer || !saw_eof) | |
11400 | { | |
11401 | if (!saw_eof) | |
11402 | { | |
3e43a32a MS |
11403 | bytes = fread (buffer + bytes_in_buffer, 1, |
11404 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11405 | file); |
11406 | if (bytes == 0) | |
11407 | { | |
11408 | if (ferror (file)) | |
11409 | error (_("Error reading %s."), local_file); | |
11410 | else | |
11411 | { | |
11412 | /* EOF. Unless there is something still in the | |
11413 | buffer from the last iteration, we are done. */ | |
11414 | saw_eof = 1; | |
11415 | if (bytes_in_buffer == 0) | |
11416 | break; | |
11417 | } | |
11418 | } | |
11419 | } | |
11420 | else | |
11421 | bytes = 0; | |
11422 | ||
11423 | bytes += bytes_in_buffer; | |
11424 | bytes_in_buffer = 0; | |
11425 | ||
0d866f62 TT |
11426 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11427 | fd, buffer, bytes, | |
3e43a32a | 11428 | offset, &remote_errno); |
a6b151f1 DJ |
11429 | |
11430 | if (retcode < 0) | |
11431 | remote_hostio_error (remote_errno); | |
11432 | else if (retcode == 0) | |
11433 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11434 | else if (retcode < bytes) | |
11435 | { | |
11436 | /* Short write. Save the rest of the read data for the next | |
11437 | write. */ | |
11438 | bytes_in_buffer = bytes - retcode; | |
11439 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11440 | } | |
11441 | ||
11442 | offset += retcode; | |
11443 | } | |
11444 | ||
11445 | discard_cleanups (close_cleanup); | |
df39ea25 | 11446 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11447 | remote_hostio_error (remote_errno); |
11448 | ||
11449 | if (from_tty) | |
11450 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11451 | do_cleanups (back_to); | |
11452 | } | |
11453 | ||
11454 | void | |
11455 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11456 | { | |
11457 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11458 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11459 | FILE *file; |
11460 | gdb_byte *buffer; | |
11461 | ULONGEST offset; | |
5d93a237 | 11462 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11463 | |
5d93a237 | 11464 | if (!rs->remote_desc) |
a6b151f1 DJ |
11465 | error (_("command can only be used with remote target")); |
11466 | ||
07c138c8 | 11467 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11468 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11469 | &remote_errno); | |
a6b151f1 DJ |
11470 | if (fd == -1) |
11471 | remote_hostio_error (remote_errno); | |
11472 | ||
614c279d | 11473 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11474 | if (file == NULL) |
11475 | perror_with_name (local_file); | |
7c8a8b04 | 11476 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11477 | |
11478 | /* Send up to this many bytes at once. They won't all fit in the | |
11479 | remote packet limit, so we'll transfer slightly fewer. */ | |
11480 | io_size = get_remote_packet_size (); | |
224c3ddb | 11481 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11482 | make_cleanup (xfree, buffer); |
11483 | ||
11484 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11485 | ||
11486 | offset = 0; | |
11487 | while (1) | |
11488 | { | |
a3be983c TT |
11489 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11490 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11491 | if (bytes == 0) |
11492 | /* Success, but no bytes, means end-of-file. */ | |
11493 | break; | |
11494 | if (bytes == -1) | |
11495 | remote_hostio_error (remote_errno); | |
11496 | ||
11497 | offset += bytes; | |
11498 | ||
11499 | bytes = fwrite (buffer, 1, bytes, file); | |
11500 | if (bytes == 0) | |
11501 | perror_with_name (local_file); | |
11502 | } | |
11503 | ||
11504 | discard_cleanups (close_cleanup); | |
df39ea25 | 11505 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11506 | remote_hostio_error (remote_errno); |
11507 | ||
11508 | if (from_tty) | |
11509 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11510 | do_cleanups (back_to); | |
11511 | } | |
11512 | ||
11513 | void | |
11514 | remote_file_delete (const char *remote_file, int from_tty) | |
11515 | { | |
11516 | int retcode, remote_errno; | |
5d93a237 | 11517 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11518 | |
5d93a237 | 11519 | if (!rs->remote_desc) |
a6b151f1 DJ |
11520 | error (_("command can only be used with remote target")); |
11521 | ||
dbbca37d | 11522 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11523 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11524 | if (retcode == -1) |
11525 | remote_hostio_error (remote_errno); | |
11526 | ||
11527 | if (from_tty) | |
11528 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11529 | } | |
11530 | ||
11531 | static void | |
11532 | remote_put_command (char *args, int from_tty) | |
11533 | { | |
11534 | struct cleanup *back_to; | |
11535 | char **argv; | |
11536 | ||
d1a41061 PP |
11537 | if (args == NULL) |
11538 | error_no_arg (_("file to put")); | |
11539 | ||
11540 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11541 | back_to = make_cleanup_freeargv (argv); |
11542 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11543 | error (_("Invalid parameters to remote put")); | |
11544 | ||
11545 | remote_file_put (argv[0], argv[1], from_tty); | |
11546 | ||
11547 | do_cleanups (back_to); | |
11548 | } | |
11549 | ||
11550 | static void | |
11551 | remote_get_command (char *args, int from_tty) | |
11552 | { | |
11553 | struct cleanup *back_to; | |
11554 | char **argv; | |
11555 | ||
d1a41061 PP |
11556 | if (args == NULL) |
11557 | error_no_arg (_("file to get")); | |
11558 | ||
11559 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11560 | back_to = make_cleanup_freeargv (argv); |
11561 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11562 | error (_("Invalid parameters to remote get")); | |
11563 | ||
11564 | remote_file_get (argv[0], argv[1], from_tty); | |
11565 | ||
11566 | do_cleanups (back_to); | |
11567 | } | |
11568 | ||
11569 | static void | |
11570 | remote_delete_command (char *args, int from_tty) | |
11571 | { | |
11572 | struct cleanup *back_to; | |
11573 | char **argv; | |
11574 | ||
d1a41061 PP |
11575 | if (args == NULL) |
11576 | error_no_arg (_("file to delete")); | |
11577 | ||
11578 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11579 | back_to = make_cleanup_freeargv (argv); |
11580 | if (argv[0] == NULL || argv[1] != NULL) | |
11581 | error (_("Invalid parameters to remote delete")); | |
11582 | ||
11583 | remote_file_delete (argv[0], from_tty); | |
11584 | ||
11585 | do_cleanups (back_to); | |
11586 | } | |
11587 | ||
11588 | static void | |
11589 | remote_command (char *args, int from_tty) | |
11590 | { | |
635c7e8a | 11591 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11592 | } |
11593 | ||
b2175913 | 11594 | static int |
19db3e69 | 11595 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11596 | { |
4082afcc PA |
11597 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11598 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11599 | return 1; |
11600 | else | |
11601 | return 0; | |
b2175913 MS |
11602 | } |
11603 | ||
74531fed | 11604 | static int |
2a9a2795 | 11605 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11606 | { |
11607 | return 1; | |
11608 | } | |
11609 | ||
03583c20 | 11610 | static int |
2bfc0540 | 11611 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11612 | { |
11613 | /* Only supported in extended mode. */ | |
11614 | return 0; | |
11615 | } | |
11616 | ||
8a305172 | 11617 | static int |
86ce2668 | 11618 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11619 | { |
11620 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11621 | |
901f9912 UW |
11622 | /* Only extended-remote handles being attached to multiple |
11623 | processes, even though plain remote can use the multi-process | |
11624 | thread id extensions, so that GDB knows the target process's | |
11625 | PID. */ | |
11626 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
11627 | } |
11628 | ||
70221824 | 11629 | static int |
782b2b07 SS |
11630 | remote_supports_cond_tracepoints (void) |
11631 | { | |
4082afcc | 11632 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11633 | } |
11634 | ||
3788aec7 | 11635 | static int |
efcc2da7 | 11636 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11637 | { |
4082afcc | 11638 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11639 | } |
11640 | ||
70221824 | 11641 | static int |
7a697b8d SS |
11642 | remote_supports_fast_tracepoints (void) |
11643 | { | |
4082afcc | 11644 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11645 | } |
11646 | ||
0fb4aa4b PA |
11647 | static int |
11648 | remote_supports_static_tracepoints (void) | |
11649 | { | |
4082afcc | 11650 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11651 | } |
11652 | ||
1e4d1764 YQ |
11653 | static int |
11654 | remote_supports_install_in_trace (void) | |
11655 | { | |
4082afcc | 11656 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11657 | } |
11658 | ||
d248b706 | 11659 | static int |
7d178d6a | 11660 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11661 | { |
4082afcc PA |
11662 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11663 | == PACKET_ENABLE); | |
d248b706 KY |
11664 | } |
11665 | ||
3065dfb6 | 11666 | static int |
6de37a3a | 11667 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11668 | { |
4082afcc | 11669 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11670 | } |
11671 | ||
d3ce09f5 | 11672 | static int |
78eff0ec | 11673 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11674 | { |
4082afcc | 11675 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11676 | } |
11677 | ||
35b1e5cc | 11678 | static void |
ecae04e1 | 11679 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11680 | { |
11681 | putpkt ("QTinit"); | |
11682 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11683 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11684 | error (_("Target does not support this command.")); |
11685 | } | |
11686 | ||
11687 | static void free_actions_list (char **actions_list); | |
11688 | static void free_actions_list_cleanup_wrapper (void *); | |
11689 | static void | |
11690 | free_actions_list_cleanup_wrapper (void *al) | |
11691 | { | |
19ba03f4 | 11692 | free_actions_list ((char **) al); |
35b1e5cc SS |
11693 | } |
11694 | ||
11695 | static void | |
11696 | free_actions_list (char **actions_list) | |
11697 | { | |
11698 | int ndx; | |
11699 | ||
11700 | if (actions_list == 0) | |
11701 | return; | |
11702 | ||
11703 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11704 | xfree (actions_list[ndx]); | |
11705 | ||
11706 | xfree (actions_list); | |
11707 | } | |
11708 | ||
409873ef SS |
11709 | /* Recursive routine to walk through command list including loops, and |
11710 | download packets for each command. */ | |
11711 | ||
11712 | static void | |
11713 | remote_download_command_source (int num, ULONGEST addr, | |
11714 | struct command_line *cmds) | |
11715 | { | |
11716 | struct remote_state *rs = get_remote_state (); | |
11717 | struct command_line *cmd; | |
11718 | ||
11719 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11720 | { | |
0df8b418 | 11721 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11722 | strcpy (rs->buf, "QTDPsrc:"); |
11723 | encode_source_string (num, addr, "cmd", cmd->line, | |
11724 | rs->buf + strlen (rs->buf), | |
11725 | rs->buf_size - strlen (rs->buf)); | |
11726 | putpkt (rs->buf); | |
11727 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11728 | if (strcmp (target_buf, "OK")) | |
11729 | warning (_("Target does not support source download.")); | |
11730 | ||
11731 | if (cmd->control_type == while_control | |
11732 | || cmd->control_type == while_stepping_control) | |
11733 | { | |
11734 | remote_download_command_source (num, addr, *cmd->body_list); | |
11735 | ||
0df8b418 | 11736 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11737 | strcpy (rs->buf, "QTDPsrc:"); |
11738 | encode_source_string (num, addr, "cmd", "end", | |
11739 | rs->buf + strlen (rs->buf), | |
11740 | rs->buf_size - strlen (rs->buf)); | |
11741 | putpkt (rs->buf); | |
11742 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11743 | if (strcmp (target_buf, "OK")) | |
11744 | warning (_("Target does not support source download.")); | |
11745 | } | |
11746 | } | |
11747 | } | |
11748 | ||
35b1e5cc | 11749 | static void |
548f7808 | 11750 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11751 | { |
bba74b36 | 11752 | #define BUF_SIZE 2048 |
e8ba3115 | 11753 | |
35b1e5cc | 11754 | CORE_ADDR tpaddr; |
409873ef | 11755 | char addrbuf[40]; |
bba74b36 | 11756 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11757 | char **tdp_actions; |
11758 | char **stepping_actions; | |
11759 | int ndx; | |
11760 | struct cleanup *old_chain = NULL; | |
11761 | struct agent_expr *aexpr; | |
11762 | struct cleanup *aexpr_chain = NULL; | |
11763 | char *pkt; | |
e8ba3115 | 11764 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11765 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11766 | |
dc673c81 | 11767 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11768 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11769 | tdp_actions); | |
11770 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11771 | stepping_actions); | |
11772 | ||
11773 | tpaddr = loc->address; | |
11774 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11775 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11776 | addrbuf, /* address */ | |
11777 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11778 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11779 | /* Fast tracepoints are mostly handled by the target, but we can |
11780 | tell the target how big of an instruction block should be moved | |
11781 | around. */ | |
11782 | if (b->type == bp_fast_tracepoint) | |
11783 | { | |
11784 | /* Only test for support at download time; we may not know | |
11785 | target capabilities at definition time. */ | |
11786 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11787 | { |
6b940e6a PL |
11788 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11789 | NULL)) | |
bba74b36 | 11790 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11791 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11792 | else |
e8ba3115 YQ |
11793 | /* If it passed validation at definition but fails now, |
11794 | something is very wrong. */ | |
11795 | internal_error (__FILE__, __LINE__, | |
11796 | _("Fast tracepoint not " | |
11797 | "valid during download")); | |
35b1e5cc | 11798 | } |
e8ba3115 YQ |
11799 | else |
11800 | /* Fast tracepoints are functionally identical to regular | |
11801 | tracepoints, so don't take lack of support as a reason to | |
11802 | give up on the trace run. */ | |
11803 | warning (_("Target does not support fast tracepoints, " | |
11804 | "downloading %d as regular tracepoint"), b->number); | |
11805 | } | |
11806 | else if (b->type == bp_static_tracepoint) | |
11807 | { | |
11808 | /* Only test for support at download time; we may not know | |
11809 | target capabilities at definition time. */ | |
11810 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11811 | { |
e8ba3115 | 11812 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11813 | |
e8ba3115 YQ |
11814 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11815 | strcat (buf, ":S"); | |
0fb4aa4b | 11816 | else |
e8ba3115 | 11817 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11818 | } |
e8ba3115 YQ |
11819 | else |
11820 | /* Fast tracepoints are functionally identical to regular | |
11821 | tracepoints, so don't take lack of support as a reason | |
11822 | to give up on the trace run. */ | |
11823 | error (_("Target does not support static tracepoints")); | |
11824 | } | |
11825 | /* If the tracepoint has a conditional, make it into an agent | |
11826 | expression and append to the definition. */ | |
11827 | if (loc->cond) | |
11828 | { | |
11829 | /* Only test support at download time, we may not know target | |
11830 | capabilities at definition time. */ | |
11831 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11832 | { |
e8ba3115 YQ |
11833 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11834 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11835 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11836 | aexpr->len); | |
e8ba3115 YQ |
11837 | pkt = buf + strlen (buf); |
11838 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11839 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11840 | *pkt = '\0'; | |
11841 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11842 | } |
e8ba3115 YQ |
11843 | else |
11844 | warning (_("Target does not support conditional tracepoints, " | |
11845 | "ignoring tp %d cond"), b->number); | |
11846 | } | |
35b1e5cc | 11847 | |
d9b3f62e | 11848 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11849 | strcat (buf, "-"); |
11850 | putpkt (buf); | |
11851 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11852 | if (strcmp (target_buf, "OK")) | |
11853 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11854 | |
e8ba3115 YQ |
11855 | /* do_single_steps (t); */ |
11856 | if (tdp_actions) | |
11857 | { | |
11858 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11859 | { |
e8ba3115 | 11860 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11861 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11862 | b->number, addrbuf, /* address */ | |
11863 | tdp_actions[ndx], | |
11864 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11865 | ? '-' : 0)); | |
e8ba3115 YQ |
11866 | putpkt (buf); |
11867 | remote_get_noisy_reply (&target_buf, | |
11868 | &target_buf_size); | |
11869 | if (strcmp (target_buf, "OK")) | |
11870 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11871 | } |
e8ba3115 YQ |
11872 | } |
11873 | if (stepping_actions) | |
11874 | { | |
11875 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11876 | { |
e8ba3115 | 11877 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11878 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11879 | b->number, addrbuf, /* address */ | |
11880 | ((ndx == 0) ? "S" : ""), | |
11881 | stepping_actions[ndx], | |
11882 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11883 | putpkt (buf); |
11884 | remote_get_noisy_reply (&target_buf, | |
11885 | &target_buf_size); | |
11886 | if (strcmp (target_buf, "OK")) | |
11887 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11888 | } |
e8ba3115 | 11889 | } |
409873ef | 11890 | |
4082afcc | 11891 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11892 | { |
f00aae0f | 11893 | if (b->location != NULL) |
409873ef | 11894 | { |
e8ba3115 | 11895 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11896 | encode_source_string (b->number, loc->address, "at", |
11897 | event_location_to_string (b->location), | |
11898 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11899 | putpkt (buf); |
11900 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11901 | if (strcmp (target_buf, "OK")) | |
11902 | warning (_("Target does not support source download.")); | |
409873ef | 11903 | } |
e8ba3115 YQ |
11904 | if (b->cond_string) |
11905 | { | |
11906 | strcpy (buf, "QTDPsrc:"); | |
11907 | encode_source_string (b->number, loc->address, | |
11908 | "cond", b->cond_string, buf + strlen (buf), | |
11909 | 2048 - strlen (buf)); | |
11910 | putpkt (buf); | |
11911 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11912 | if (strcmp (target_buf, "OK")) | |
11913 | warning (_("Target does not support source download.")); | |
11914 | } | |
11915 | remote_download_command_source (b->number, loc->address, | |
11916 | breakpoint_commands (b)); | |
35b1e5cc | 11917 | } |
e8ba3115 YQ |
11918 | |
11919 | do_cleanups (old_chain); | |
35b1e5cc SS |
11920 | } |
11921 | ||
1e4d1764 | 11922 | static int |
a52a8357 | 11923 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11924 | { |
1e51243a PA |
11925 | struct remote_state *rs = get_remote_state (); |
11926 | struct trace_status *ts; | |
11927 | int status; | |
11928 | ||
11929 | /* Don't try to install tracepoints until we've relocated our | |
11930 | symbols, and fetched and merged the target's tracepoint list with | |
11931 | ours. */ | |
11932 | if (rs->starting_up) | |
11933 | return 0; | |
11934 | ||
11935 | ts = current_trace_status (); | |
8bd200f1 | 11936 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11937 | |
11938 | if (status == -1 || !ts->running_known || !ts->running) | |
11939 | return 0; | |
11940 | ||
11941 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11942 | installing tracepoint in trace, we have to return. */ | |
11943 | if (!remote_supports_install_in_trace ()) | |
11944 | return 0; | |
11945 | ||
11946 | return 1; | |
11947 | } | |
11948 | ||
11949 | ||
35b1e5cc | 11950 | static void |
559d2b81 TT |
11951 | remote_download_trace_state_variable (struct target_ops *self, |
11952 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11953 | { |
11954 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11955 | char *p; |
35b1e5cc | 11956 | |
bba74b36 YQ |
11957 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11958 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11959 | tsv->builtin); | |
00bf0b85 SS |
11960 | p = rs->buf + strlen (rs->buf); |
11961 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11962 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11963 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11964 | *p++ = '\0'; |
35b1e5cc SS |
11965 | putpkt (rs->buf); |
11966 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11967 | if (*target_buf == '\0') |
11968 | error (_("Target does not support this command.")); | |
11969 | if (strcmp (target_buf, "OK") != 0) | |
11970 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11971 | } |
11972 | ||
d248b706 | 11973 | static void |
46670d57 TT |
11974 | remote_enable_tracepoint (struct target_ops *self, |
11975 | struct bp_location *location) | |
d248b706 KY |
11976 | { |
11977 | struct remote_state *rs = get_remote_state (); | |
11978 | char addr_buf[40]; | |
11979 | ||
11980 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11981 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11982 | location->owner->number, addr_buf); | |
d248b706 KY |
11983 | putpkt (rs->buf); |
11984 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11985 | if (*rs->buf == '\0') | |
11986 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11987 | if (strcmp (rs->buf, "OK") != 0) | |
11988 | error (_("Error on target while enabling tracepoint.")); | |
11989 | } | |
11990 | ||
11991 | static void | |
780b049c TT |
11992 | remote_disable_tracepoint (struct target_ops *self, |
11993 | struct bp_location *location) | |
d248b706 KY |
11994 | { |
11995 | struct remote_state *rs = get_remote_state (); | |
11996 | char addr_buf[40]; | |
11997 | ||
11998 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11999 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12000 | location->owner->number, addr_buf); | |
d248b706 KY |
12001 | putpkt (rs->buf); |
12002 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12003 | if (*rs->buf == '\0') | |
12004 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12005 | if (strcmp (rs->buf, "OK") != 0) | |
12006 | error (_("Error on target while disabling tracepoint.")); | |
12007 | } | |
12008 | ||
35b1e5cc | 12009 | static void |
583f9a86 | 12010 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12011 | { |
12012 | asection *s; | |
81b9b86e | 12013 | bfd *abfd = NULL; |
35b1e5cc | 12014 | bfd_size_type size; |
608bcef2 | 12015 | bfd_vma vma; |
35b1e5cc | 12016 | int anysecs = 0; |
c2fa21f1 | 12017 | int offset = 0; |
35b1e5cc SS |
12018 | |
12019 | if (!exec_bfd) | |
12020 | return; /* No information to give. */ | |
12021 | ||
12022 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12023 | offset = strlen (target_buf); |
35b1e5cc SS |
12024 | for (s = exec_bfd->sections; s; s = s->next) |
12025 | { | |
12026 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12027 | int sec_length; |
35b1e5cc SS |
12028 | |
12029 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12030 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12031 | (s->flags & SEC_READONLY) == 0) |
12032 | continue; | |
12033 | ||
12034 | anysecs = 1; | |
81b9b86e | 12035 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12036 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12037 | sprintf_vma (tmp1, vma); |
12038 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12039 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12040 | if (offset + sec_length + 1 > target_buf_size) | |
12041 | { | |
4082afcc | 12042 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12043 | warning (_("\ |
c2fa21f1 HZ |
12044 | Too many sections for read-only sections definition packet.")); |
12045 | break; | |
12046 | } | |
bba74b36 YQ |
12047 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12048 | tmp1, tmp2); | |
c2fa21f1 | 12049 | offset += sec_length; |
35b1e5cc SS |
12050 | } |
12051 | if (anysecs) | |
12052 | { | |
12053 | putpkt (target_buf); | |
12054 | getpkt (&target_buf, &target_buf_size, 0); | |
12055 | } | |
12056 | } | |
12057 | ||
12058 | static void | |
e2d1aae3 | 12059 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12060 | { |
12061 | putpkt ("QTStart"); | |
12062 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12063 | if (*target_buf == '\0') |
12064 | error (_("Target does not support this command.")); | |
12065 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12066 | error (_("Bogus reply from target: %s"), target_buf); |
12067 | } | |
12068 | ||
12069 | static int | |
8bd200f1 | 12070 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12071 | { |
953b98d1 | 12072 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12073 | char *p = NULL; |
0df8b418 | 12074 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12075 | extern int trace_regblock_size; |
bd3eecc3 PA |
12076 | enum packet_result result; |
12077 | ||
4082afcc | 12078 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12079 | return -1; |
a744cf53 | 12080 | |
00bf0b85 SS |
12081 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12082 | ||
049dc89b JK |
12083 | putpkt ("qTStatus"); |
12084 | ||
492d29ea | 12085 | TRY |
67f41397 JK |
12086 | { |
12087 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12088 | } | |
492d29ea | 12089 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12090 | { |
598d3636 JK |
12091 | if (ex.error != TARGET_CLOSE_ERROR) |
12092 | { | |
12093 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12094 | return -1; | |
12095 | } | |
12096 | throw_exception (ex); | |
67f41397 | 12097 | } |
492d29ea | 12098 | END_CATCH |
00bf0b85 | 12099 | |
bd3eecc3 PA |
12100 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12101 | ||
00bf0b85 | 12102 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12103 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12104 | return -1; |
35b1e5cc | 12105 | |
00bf0b85 | 12106 | /* We're working with a live target. */ |
f5911ea1 | 12107 | ts->filename = NULL; |
00bf0b85 | 12108 | |
00bf0b85 | 12109 | if (*p++ != 'T') |
35b1e5cc SS |
12110 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12111 | ||
84cebc4a YQ |
12112 | /* Function 'parse_trace_status' sets default value of each field of |
12113 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12114 | parse_trace_status (p, ts); |
12115 | ||
12116 | return ts->running; | |
35b1e5cc SS |
12117 | } |
12118 | ||
70221824 | 12119 | static void |
db90e85c | 12120 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12121 | struct uploaded_tp *utp) |
12122 | { | |
12123 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12124 | char *reply; |
12125 | struct bp_location *loc; | |
12126 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12127 | size_t size = get_remote_packet_size (); |
f196051f SS |
12128 | |
12129 | if (tp) | |
12130 | { | |
12131 | tp->base.hit_count = 0; | |
12132 | tp->traceframe_usage = 0; | |
12133 | for (loc = tp->base.loc; loc; loc = loc->next) | |
12134 | { | |
12135 | /* If the tracepoint was never downloaded, don't go asking for | |
12136 | any status. */ | |
12137 | if (tp->number_on_target == 0) | |
12138 | continue; | |
bba74b36 YQ |
12139 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12140 | phex_nz (loc->address, 0)); | |
f196051f SS |
12141 | putpkt (rs->buf); |
12142 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12143 | if (reply && *reply) | |
12144 | { | |
12145 | if (*reply == 'V') | |
12146 | parse_tracepoint_status (reply + 1, bp, utp); | |
12147 | } | |
12148 | } | |
12149 | } | |
12150 | else if (utp) | |
12151 | { | |
12152 | utp->hit_count = 0; | |
12153 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12154 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12155 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12156 | putpkt (rs->buf); |
12157 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12158 | if (reply && *reply) | |
12159 | { | |
12160 | if (*reply == 'V') | |
12161 | parse_tracepoint_status (reply + 1, bp, utp); | |
12162 | } | |
12163 | } | |
12164 | } | |
12165 | ||
35b1e5cc | 12166 | static void |
74499f1b | 12167 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12168 | { |
12169 | putpkt ("QTStop"); | |
12170 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12171 | if (*target_buf == '\0') |
12172 | error (_("Target does not support this command.")); | |
12173 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12174 | error (_("Bogus reply from target: %s"), target_buf); |
12175 | } | |
12176 | ||
12177 | static int | |
bd4c6793 TT |
12178 | remote_trace_find (struct target_ops *self, |
12179 | enum trace_find_type type, int num, | |
cc5925ad | 12180 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12181 | int *tpp) |
12182 | { | |
12183 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12184 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12185 | char *p, *reply; |
12186 | int target_frameno = -1, target_tracept = -1; | |
12187 | ||
e6e4e701 PA |
12188 | /* Lookups other than by absolute frame number depend on the current |
12189 | trace selected, so make sure it is correct on the remote end | |
12190 | first. */ | |
12191 | if (type != tfind_number) | |
12192 | set_remote_traceframe (); | |
12193 | ||
35b1e5cc SS |
12194 | p = rs->buf; |
12195 | strcpy (p, "QTFrame:"); | |
12196 | p = strchr (p, '\0'); | |
12197 | switch (type) | |
12198 | { | |
12199 | case tfind_number: | |
bba74b36 | 12200 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12201 | break; |
12202 | case tfind_pc: | |
bba74b36 | 12203 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12204 | break; |
12205 | case tfind_tp: | |
bba74b36 | 12206 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12207 | break; |
12208 | case tfind_range: | |
bba74b36 YQ |
12209 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12210 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12211 | break; |
12212 | case tfind_outside: | |
bba74b36 YQ |
12213 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12214 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12215 | break; |
12216 | default: | |
9b20d036 | 12217 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12218 | } |
12219 | ||
12220 | putpkt (rs->buf); | |
2f65bcb7 | 12221 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12222 | if (*reply == '\0') |
12223 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12224 | |
12225 | while (reply && *reply) | |
12226 | switch (*reply) | |
12227 | { | |
12228 | case 'F': | |
f197e0f1 VP |
12229 | p = ++reply; |
12230 | target_frameno = (int) strtol (p, &reply, 16); | |
12231 | if (reply == p) | |
12232 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12233 | /* Don't update our remote traceframe number cache on failure |
12234 | to select a remote traceframe. */ | |
f197e0f1 VP |
12235 | if (target_frameno == -1) |
12236 | return -1; | |
35b1e5cc SS |
12237 | break; |
12238 | case 'T': | |
f197e0f1 VP |
12239 | p = ++reply; |
12240 | target_tracept = (int) strtol (p, &reply, 16); | |
12241 | if (reply == p) | |
12242 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12243 | break; |
12244 | case 'O': /* "OK"? */ | |
12245 | if (reply[1] == 'K' && reply[2] == '\0') | |
12246 | reply += 2; | |
12247 | else | |
12248 | error (_("Bogus reply from target: %s"), reply); | |
12249 | break; | |
12250 | default: | |
12251 | error (_("Bogus reply from target: %s"), reply); | |
12252 | } | |
12253 | if (tpp) | |
12254 | *tpp = target_tracept; | |
e6e4e701 | 12255 | |
262e1174 | 12256 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12257 | return target_frameno; |
12258 | } | |
12259 | ||
12260 | static int | |
4011015b TT |
12261 | remote_get_trace_state_variable_value (struct target_ops *self, |
12262 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12263 | { |
12264 | struct remote_state *rs = get_remote_state (); | |
12265 | char *reply; | |
12266 | ULONGEST uval; | |
12267 | ||
e6e4e701 PA |
12268 | set_remote_traceframe (); |
12269 | ||
bba74b36 | 12270 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12271 | putpkt (rs->buf); |
12272 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12273 | if (reply && *reply) | |
12274 | { | |
12275 | if (*reply == 'V') | |
12276 | { | |
12277 | unpack_varlen_hex (reply + 1, &uval); | |
12278 | *val = (LONGEST) uval; | |
12279 | return 1; | |
12280 | } | |
12281 | } | |
12282 | return 0; | |
12283 | } | |
12284 | ||
00bf0b85 | 12285 | static int |
dc3decaf | 12286 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12287 | { |
12288 | struct remote_state *rs = get_remote_state (); | |
12289 | char *p, *reply; | |
12290 | ||
12291 | p = rs->buf; | |
12292 | strcpy (p, "QTSave:"); | |
12293 | p += strlen (p); | |
12294 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12295 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12296 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12297 | *p++ = '\0'; |
12298 | putpkt (rs->buf); | |
ad91cd99 | 12299 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12300 | if (*reply == '\0') |
ad91cd99 PA |
12301 | error (_("Target does not support this command.")); |
12302 | if (strcmp (reply, "OK") != 0) | |
12303 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12304 | return 0; |
12305 | } | |
12306 | ||
12307 | /* This is basically a memory transfer, but needs to be its own packet | |
12308 | because we don't know how the target actually organizes its trace | |
12309 | memory, plus we want to be able to ask for as much as possible, but | |
12310 | not be unhappy if we don't get as much as we ask for. */ | |
12311 | ||
12312 | static LONGEST | |
88ee6f45 TT |
12313 | remote_get_raw_trace_data (struct target_ops *self, |
12314 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12315 | { |
12316 | struct remote_state *rs = get_remote_state (); | |
12317 | char *reply; | |
12318 | char *p; | |
12319 | int rslt; | |
12320 | ||
12321 | p = rs->buf; | |
12322 | strcpy (p, "qTBuffer:"); | |
12323 | p += strlen (p); | |
12324 | p += hexnumstr (p, offset); | |
12325 | *p++ = ','; | |
12326 | p += hexnumstr (p, len); | |
12327 | *p++ = '\0'; | |
12328 | ||
12329 | putpkt (rs->buf); | |
12330 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12331 | if (reply && *reply) | |
12332 | { | |
12333 | /* 'l' by itself means we're at the end of the buffer and | |
12334 | there is nothing more to get. */ | |
12335 | if (*reply == 'l') | |
12336 | return 0; | |
12337 | ||
12338 | /* Convert the reply into binary. Limit the number of bytes to | |
12339 | convert according to our passed-in buffer size, rather than | |
12340 | what was returned in the packet; if the target is | |
12341 | unexpectedly generous and gives us a bigger reply than we | |
12342 | asked for, we don't want to crash. */ | |
12343 | rslt = hex2bin (target_buf, buf, len); | |
12344 | return rslt; | |
12345 | } | |
12346 | ||
12347 | /* Something went wrong, flag as an error. */ | |
12348 | return -1; | |
12349 | } | |
12350 | ||
35b1e5cc | 12351 | static void |
37b25738 | 12352 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12353 | { |
12354 | struct remote_state *rs = get_remote_state (); | |
12355 | ||
4082afcc | 12356 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12357 | { |
ad91cd99 PA |
12358 | char *reply; |
12359 | ||
bba74b36 | 12360 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12361 | putpkt (rs->buf); |
ad91cd99 PA |
12362 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12363 | if (*reply == '\0') | |
33da3f1c | 12364 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12365 | if (strcmp (reply, "OK") != 0) |
12366 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12367 | } |
12368 | else if (val) | |
12369 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12370 | } |
12371 | ||
dc146f7c VP |
12372 | static int |
12373 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12374 | { | |
12375 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12376 | |
fe978cb0 PA |
12377 | if (info && info->priv) |
12378 | return info->priv->core; | |
dc146f7c VP |
12379 | return -1; |
12380 | } | |
12381 | ||
4daf5ac0 | 12382 | static void |
736d5b1f | 12383 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12384 | { |
12385 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12386 | char *reply; |
4daf5ac0 | 12387 | |
bba74b36 | 12388 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12389 | putpkt (rs->buf); |
ad91cd99 PA |
12390 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12391 | if (*reply == '\0') | |
4daf5ac0 | 12392 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12393 | if (strcmp (reply, "OK") != 0) |
12394 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12395 | } |
12396 | ||
b3b9301e | 12397 | static struct traceframe_info * |
a893e81f | 12398 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12399 | { |
12400 | char *text; | |
12401 | ||
12402 | text = target_read_stralloc (¤t_target, | |
12403 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12404 | if (text != NULL) | |
12405 | { | |
12406 | struct traceframe_info *info; | |
12407 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12408 | ||
12409 | info = parse_traceframe_info (text); | |
12410 | do_cleanups (back_to); | |
12411 | return info; | |
12412 | } | |
12413 | ||
12414 | return NULL; | |
12415 | } | |
12416 | ||
405f8e94 SS |
12417 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12418 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12419 | if the packet is not supported, and 0 if the minimum instruction | |
12420 | length is unknown. */ | |
12421 | ||
12422 | static int | |
0e67620a | 12423 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12424 | { |
12425 | struct remote_state *rs = get_remote_state (); | |
12426 | char *reply; | |
12427 | ||
e886a173 PA |
12428 | /* If we're not debugging a process yet, the IPA can't be |
12429 | loaded. */ | |
12430 | if (!target_has_execution) | |
12431 | return 0; | |
12432 | ||
12433 | /* Make sure the remote is pointing at the right process. */ | |
12434 | set_general_process (); | |
12435 | ||
bba74b36 | 12436 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12437 | putpkt (rs->buf); |
12438 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12439 | if (*reply == '\0') | |
12440 | return -1; | |
12441 | else | |
12442 | { | |
12443 | ULONGEST min_insn_len; | |
12444 | ||
12445 | unpack_varlen_hex (reply, &min_insn_len); | |
12446 | ||
12447 | return (int) min_insn_len; | |
12448 | } | |
12449 | } | |
12450 | ||
f6f899bf | 12451 | static void |
4da384be | 12452 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12453 | { |
4082afcc | 12454 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12455 | { |
12456 | struct remote_state *rs = get_remote_state (); | |
12457 | char *buf = rs->buf; | |
12458 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12459 | enum packet_result result; | |
12460 | ||
12461 | gdb_assert (val >= 0 || val == -1); | |
12462 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12463 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12464 | if (val < 0) | |
12465 | { | |
12466 | *buf++ = '-'; | |
12467 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12468 | } | |
12469 | else | |
12470 | buf += hexnumstr (buf, (ULONGEST) val); | |
12471 | ||
12472 | putpkt (rs->buf); | |
12473 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12474 | result = packet_ok (rs->buf, | |
12475 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12476 | ||
12477 | if (result != PACKET_OK) | |
12478 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12479 | } | |
12480 | } | |
12481 | ||
f196051f | 12482 | static int |
d9e68a2c TT |
12483 | remote_set_trace_notes (struct target_ops *self, |
12484 | const char *user, const char *notes, | |
ca623f82 | 12485 | const char *stop_notes) |
f196051f SS |
12486 | { |
12487 | struct remote_state *rs = get_remote_state (); | |
12488 | char *reply; | |
12489 | char *buf = rs->buf; | |
12490 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12491 | int nbytes; | |
12492 | ||
12493 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12494 | if (user) | |
12495 | { | |
12496 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12497 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12498 | buf += 2 * nbytes; |
12499 | *buf++ = ';'; | |
12500 | } | |
12501 | if (notes) | |
12502 | { | |
12503 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12504 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12505 | buf += 2 * nbytes; |
12506 | *buf++ = ';'; | |
12507 | } | |
12508 | if (stop_notes) | |
12509 | { | |
12510 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12511 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12512 | buf += 2 * nbytes; |
12513 | *buf++ = ';'; | |
12514 | } | |
12515 | /* Ensure the buffer is terminated. */ | |
12516 | *buf = '\0'; | |
12517 | ||
12518 | putpkt (rs->buf); | |
12519 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12520 | if (*reply == '\0') | |
12521 | return 0; | |
12522 | ||
12523 | if (strcmp (reply, "OK") != 0) | |
12524 | error (_("Bogus reply from target: %s"), reply); | |
12525 | ||
12526 | return 1; | |
12527 | } | |
12528 | ||
d1feda86 | 12529 | static int |
2c152180 | 12530 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12531 | { |
4082afcc | 12532 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12533 | { |
12534 | struct remote_state *rs = get_remote_state (); | |
12535 | ||
12536 | /* If the stub supports QAgent. */ | |
bba74b36 | 12537 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12538 | putpkt (rs->buf); |
12539 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12540 | ||
12541 | if (strcmp (rs->buf, "OK") == 0) | |
12542 | { | |
12543 | use_agent = use; | |
12544 | return 1; | |
12545 | } | |
12546 | } | |
12547 | ||
12548 | return 0; | |
12549 | } | |
12550 | ||
12551 | static int | |
fe38f897 | 12552 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12553 | { |
4082afcc | 12554 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12555 | } |
12556 | ||
9accd112 MM |
12557 | struct btrace_target_info |
12558 | { | |
12559 | /* The ptid of the traced thread. */ | |
12560 | ptid_t ptid; | |
f4abbc16 MM |
12561 | |
12562 | /* The obtained branch trace configuration. */ | |
12563 | struct btrace_config conf; | |
9accd112 MM |
12564 | }; |
12565 | ||
f4abbc16 MM |
12566 | /* Reset our idea of our target's btrace configuration. */ |
12567 | ||
12568 | static void | |
12569 | remote_btrace_reset (void) | |
12570 | { | |
12571 | struct remote_state *rs = get_remote_state (); | |
12572 | ||
12573 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12574 | } | |
12575 | ||
9accd112 MM |
12576 | /* Check whether the target supports branch tracing. */ |
12577 | ||
12578 | static int | |
043c3577 | 12579 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12580 | { |
4082afcc | 12581 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12582 | return 0; |
4082afcc | 12583 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12584 | return 0; |
12585 | ||
043c3577 MM |
12586 | switch (format) |
12587 | { | |
12588 | case BTRACE_FORMAT_NONE: | |
12589 | return 0; | |
12590 | ||
12591 | case BTRACE_FORMAT_BTS: | |
12592 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12593 | |
12594 | case BTRACE_FORMAT_PT: | |
12595 | /* The trace is decoded on the host. Even if our target supports it, | |
12596 | we still need to have libipt to decode the trace. */ | |
12597 | #if defined (HAVE_LIBIPT) | |
12598 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12599 | #else /* !defined (HAVE_LIBIPT) */ | |
12600 | return 0; | |
12601 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12602 | } |
12603 | ||
12604 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12605 | } |
12606 | ||
f4abbc16 MM |
12607 | /* Synchronize the configuration with the target. */ |
12608 | ||
12609 | static void | |
12610 | btrace_sync_conf (const struct btrace_config *conf) | |
12611 | { | |
d33501a5 MM |
12612 | struct packet_config *packet; |
12613 | struct remote_state *rs; | |
12614 | char *buf, *pos, *endbuf; | |
12615 | ||
12616 | rs = get_remote_state (); | |
12617 | buf = rs->buf; | |
12618 | endbuf = buf + get_remote_packet_size (); | |
12619 | ||
12620 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12621 | if (packet_config_support (packet) == PACKET_ENABLE | |
12622 | && conf->bts.size != rs->btrace_config.bts.size) | |
12623 | { | |
12624 | pos = buf; | |
12625 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12626 | conf->bts.size); | |
12627 | ||
12628 | putpkt (buf); | |
12629 | getpkt (&buf, &rs->buf_size, 0); | |
12630 | ||
12631 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12632 | { | |
12633 | if (buf[0] == 'E' && buf[1] == '.') | |
12634 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12635 | else | |
12636 | error (_("Failed to configure the BTS buffer size.")); | |
12637 | } | |
12638 | ||
12639 | rs->btrace_config.bts.size = conf->bts.size; | |
12640 | } | |
b20a6524 MM |
12641 | |
12642 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12643 | if (packet_config_support (packet) == PACKET_ENABLE | |
12644 | && conf->pt.size != rs->btrace_config.pt.size) | |
12645 | { | |
12646 | pos = buf; | |
12647 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12648 | conf->pt.size); | |
12649 | ||
12650 | putpkt (buf); | |
12651 | getpkt (&buf, &rs->buf_size, 0); | |
12652 | ||
12653 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12654 | { | |
12655 | if (buf[0] == 'E' && buf[1] == '.') | |
12656 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12657 | else | |
12658 | error (_("Failed to configure the trace buffer size.")); | |
12659 | } | |
12660 | ||
12661 | rs->btrace_config.pt.size = conf->pt.size; | |
12662 | } | |
f4abbc16 MM |
12663 | } |
12664 | ||
12665 | /* Read the current thread's btrace configuration from the target and | |
12666 | store it into CONF. */ | |
12667 | ||
12668 | static void | |
12669 | btrace_read_config (struct btrace_config *conf) | |
12670 | { | |
12671 | char *xml; | |
12672 | ||
12673 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12674 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12675 | if (xml != NULL) |
12676 | { | |
12677 | struct cleanup *cleanup; | |
12678 | ||
12679 | cleanup = make_cleanup (xfree, xml); | |
12680 | parse_xml_btrace_conf (conf, xml); | |
12681 | do_cleanups (cleanup); | |
12682 | } | |
12683 | } | |
12684 | ||
9accd112 MM |
12685 | /* Enable branch tracing. */ |
12686 | ||
12687 | static struct btrace_target_info * | |
f4abbc16 MM |
12688 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12689 | const struct btrace_config *conf) | |
9accd112 MM |
12690 | { |
12691 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12692 | struct packet_config *packet = NULL; |
9accd112 MM |
12693 | struct remote_state *rs = get_remote_state (); |
12694 | char *buf = rs->buf; | |
12695 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12696 | ||
b20a6524 MM |
12697 | switch (conf->format) |
12698 | { | |
12699 | case BTRACE_FORMAT_BTS: | |
12700 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12701 | break; | |
12702 | ||
12703 | case BTRACE_FORMAT_PT: | |
12704 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12705 | break; | |
12706 | } | |
12707 | ||
12708 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12709 | error (_("Target does not support branch tracing.")); |
12710 | ||
f4abbc16 MM |
12711 | btrace_sync_conf (conf); |
12712 | ||
9accd112 MM |
12713 | set_general_thread (ptid); |
12714 | ||
12715 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12716 | putpkt (rs->buf); | |
12717 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12718 | ||
12719 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12720 | { | |
12721 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12722 | error (_("Could not enable branch tracing for %s: %s"), | |
12723 | target_pid_to_str (ptid), rs->buf + 2); | |
12724 | else | |
12725 | error (_("Could not enable branch tracing for %s."), | |
12726 | target_pid_to_str (ptid)); | |
12727 | } | |
12728 | ||
8d749320 | 12729 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12730 | tinfo->ptid = ptid; |
12731 | ||
f4abbc16 MM |
12732 | /* If we fail to read the configuration, we lose some information, but the |
12733 | tracing itself is not impacted. */ | |
492d29ea PA |
12734 | TRY |
12735 | { | |
12736 | btrace_read_config (&tinfo->conf); | |
12737 | } | |
12738 | CATCH (err, RETURN_MASK_ERROR) | |
12739 | { | |
12740 | if (err.message != NULL) | |
12741 | warning ("%s", err.message); | |
12742 | } | |
12743 | END_CATCH | |
f4abbc16 | 12744 | |
9accd112 MM |
12745 | return tinfo; |
12746 | } | |
12747 | ||
12748 | /* Disable branch tracing. */ | |
12749 | ||
12750 | static void | |
25e95349 TT |
12751 | remote_disable_btrace (struct target_ops *self, |
12752 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12753 | { |
12754 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12755 | struct remote_state *rs = get_remote_state (); | |
12756 | char *buf = rs->buf; | |
12757 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12758 | ||
4082afcc | 12759 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12760 | error (_("Target does not support branch tracing.")); |
12761 | ||
12762 | set_general_thread (tinfo->ptid); | |
12763 | ||
12764 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12765 | putpkt (rs->buf); | |
12766 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12767 | ||
12768 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12769 | { | |
12770 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12771 | error (_("Could not disable branch tracing for %s: %s"), | |
12772 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12773 | else | |
12774 | error (_("Could not disable branch tracing for %s."), | |
12775 | target_pid_to_str (tinfo->ptid)); | |
12776 | } | |
12777 | ||
12778 | xfree (tinfo); | |
12779 | } | |
12780 | ||
12781 | /* Teardown branch tracing. */ | |
12782 | ||
12783 | static void | |
1777056d TT |
12784 | remote_teardown_btrace (struct target_ops *self, |
12785 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12786 | { |
12787 | /* We must not talk to the target during teardown. */ | |
12788 | xfree (tinfo); | |
12789 | } | |
12790 | ||
12791 | /* Read the branch trace. */ | |
12792 | ||
969c39fb | 12793 | static enum btrace_error |
39c49f83 | 12794 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12795 | struct btrace_data *btrace, |
969c39fb | 12796 | struct btrace_target_info *tinfo, |
9accd112 MM |
12797 | enum btrace_read_type type) |
12798 | { | |
12799 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12800 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12801 | struct cleanup *cleanup; |
9accd112 MM |
12802 | const char *annex; |
12803 | char *xml; | |
12804 | ||
4082afcc | 12805 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12806 | error (_("Target does not support branch tracing.")); |
12807 | ||
12808 | #if !defined(HAVE_LIBEXPAT) | |
12809 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12810 | #endif | |
12811 | ||
12812 | switch (type) | |
12813 | { | |
864089d2 | 12814 | case BTRACE_READ_ALL: |
9accd112 MM |
12815 | annex = "all"; |
12816 | break; | |
864089d2 | 12817 | case BTRACE_READ_NEW: |
9accd112 MM |
12818 | annex = "new"; |
12819 | break; | |
969c39fb MM |
12820 | case BTRACE_READ_DELTA: |
12821 | annex = "delta"; | |
12822 | break; | |
9accd112 MM |
12823 | default: |
12824 | internal_error (__FILE__, __LINE__, | |
12825 | _("Bad branch tracing read type: %u."), | |
12826 | (unsigned int) type); | |
12827 | } | |
12828 | ||
12829 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12830 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12831 | if (xml == NULL) |
12832 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12833 | |
969c39fb | 12834 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12835 | parse_xml_btrace (btrace, xml); |
969c39fb | 12836 | do_cleanups (cleanup); |
9accd112 | 12837 | |
969c39fb | 12838 | return BTRACE_ERR_NONE; |
9accd112 MM |
12839 | } |
12840 | ||
f4abbc16 MM |
12841 | static const struct btrace_config * |
12842 | remote_btrace_conf (struct target_ops *self, | |
12843 | const struct btrace_target_info *tinfo) | |
12844 | { | |
12845 | return &tinfo->conf; | |
12846 | } | |
12847 | ||
ced63ec0 | 12848 | static int |
5436ff03 | 12849 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12850 | { |
4082afcc PA |
12851 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12852 | == PACKET_ENABLE); | |
ced63ec0 GB |
12853 | } |
12854 | ||
9dd130a0 TT |
12855 | /* Implementation of to_load. */ |
12856 | ||
12857 | static void | |
9cbe5fff | 12858 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12859 | { |
12860 | generic_load (name, from_tty); | |
12861 | } | |
12862 | ||
c78fa86a GB |
12863 | /* Accepts an integer PID; returns a string representing a file that |
12864 | can be opened on the remote side to get the symbols for the child | |
12865 | process. Returns NULL if the operation is not supported. */ | |
12866 | ||
12867 | static char * | |
12868 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12869 | { | |
12870 | static char *filename = NULL; | |
835205d0 GB |
12871 | struct inferior *inf; |
12872 | char *annex = NULL; | |
c78fa86a GB |
12873 | |
12874 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12875 | return NULL; | |
12876 | ||
12877 | if (filename != NULL) | |
12878 | xfree (filename); | |
12879 | ||
835205d0 GB |
12880 | inf = find_inferior_pid (pid); |
12881 | if (inf == NULL) | |
12882 | internal_error (__FILE__, __LINE__, | |
12883 | _("not currently attached to process %d"), pid); | |
12884 | ||
12885 | if (!inf->fake_pid_p) | |
12886 | { | |
12887 | const int annex_size = 9; | |
12888 | ||
224c3ddb | 12889 | annex = (char *) alloca (annex_size); |
835205d0 GB |
12890 | xsnprintf (annex, annex_size, "%x", pid); |
12891 | } | |
12892 | ||
c78fa86a GB |
12893 | filename = target_read_stralloc (¤t_target, |
12894 | TARGET_OBJECT_EXEC_FILE, annex); | |
12895 | ||
12896 | return filename; | |
12897 | } | |
12898 | ||
750ce8d1 YQ |
12899 | /* Implement the to_can_do_single_step target_ops method. */ |
12900 | ||
12901 | static int | |
12902 | remote_can_do_single_step (struct target_ops *ops) | |
12903 | { | |
12904 | /* We can only tell whether target supports single step or not by | |
12905 | supported s and S vCont actions if the stub supports vContSupported | |
12906 | feature. If the stub doesn't support vContSupported feature, | |
12907 | we have conservatively to think target doesn't supports single | |
12908 | step. */ | |
12909 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
12910 | { | |
12911 | struct remote_state *rs = get_remote_state (); | |
12912 | ||
12913 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
12914 | remote_vcont_probe (rs); | |
12915 | ||
12916 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
12917 | } | |
12918 | else | |
12919 | return 0; | |
12920 | } | |
12921 | ||
c906108c | 12922 | static void |
fba45db2 | 12923 | init_remote_ops (void) |
c906108c | 12924 | { |
c5aa993b | 12925 | remote_ops.to_shortname = "remote"; |
c906108c | 12926 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12927 | remote_ops.to_doc = |
c906108c | 12928 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12929 | Specify the serial device it is connected to\n\ |
12930 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12931 | remote_ops.to_open = remote_open; |
12932 | remote_ops.to_close = remote_close; | |
c906108c | 12933 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12934 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12935 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12936 | remote_ops.to_wait = remote_wait; |
12937 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12938 | remote_ops.to_store_registers = remote_store_registers; | |
12939 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12940 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12941 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12942 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12943 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12944 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12945 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12946 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12947 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12948 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12949 | remote_ops.to_watchpoint_addr_within_range = |
12950 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12951 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12952 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12953 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12954 | remote_ops.to_region_ok_for_hw_watchpoint |
12955 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12956 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12957 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12958 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12959 | remote_ops.to_load = remote_load; |
c906108c | 12960 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12961 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12962 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12963 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 12964 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 12965 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12966 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12967 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12968 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12969 | remote_ops.to_stop = remote_stop; |
bfedc46a | 12970 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 12971 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 12972 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12973 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12974 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12975 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12976 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12977 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12978 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12979 | remote_ops.to_has_memory = default_child_has_memory; | |
12980 | remote_ops.to_has_stack = default_child_has_stack; | |
12981 | remote_ops.to_has_registers = default_child_has_registers; | |
12982 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12983 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12984 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12985 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12986 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12987 | remote_ops.to_flash_erase = remote_flash_erase; |
12988 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12989 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12990 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12991 | remote_ops.to_can_async_p = remote_can_async_p; |
12992 | remote_ops.to_is_async_p = remote_is_async_p; | |
12993 | remote_ops.to_async = remote_async; | |
65706a29 | 12994 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 12995 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
12996 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12997 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12998 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12999 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13000 | remote_ops.to_supports_disable_randomization |
13001 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13002 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13003 | remote_ops.to_fileio_open = remote_hostio_open; |
13004 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13005 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13006 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13007 | remote_ops.to_fileio_close = remote_hostio_close; |
13008 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13009 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13010 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13011 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13012 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13013 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13014 | remote_ops.to_trace_init = remote_trace_init; |
13015 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13016 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13017 | remote_ops.to_download_trace_state_variable |
13018 | = remote_download_trace_state_variable; | |
d248b706 KY |
13019 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13020 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13021 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13022 | remote_ops.to_trace_start = remote_trace_start; | |
13023 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13024 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13025 | remote_ops.to_trace_stop = remote_trace_stop; |
13026 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13027 | remote_ops.to_get_trace_state_variable_value |
13028 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13029 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13030 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13031 | remote_ops.to_upload_trace_state_variables |
13032 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13033 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13034 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13035 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13036 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13037 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13038 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13039 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13040 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13041 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13042 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13043 | remote_ops.to_static_tracepoint_marker_at |
13044 | = remote_static_tracepoint_marker_at; | |
13045 | remote_ops.to_static_tracepoint_markers_by_strid | |
13046 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13047 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13048 | remote_ops.to_use_agent = remote_use_agent; |
13049 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13050 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13051 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13052 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13053 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13054 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13055 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13056 | remote_ops.to_augmented_libraries_svr4_read = |
13057 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
13058 | } |
13059 | ||
13060 | /* Set up the extended remote vector by making a copy of the standard | |
13061 | remote vector and adding to it. */ | |
13062 | ||
13063 | static void | |
fba45db2 | 13064 | init_extended_remote_ops (void) |
c906108c SS |
13065 | { |
13066 | extended_remote_ops = remote_ops; | |
13067 | ||
0f71a2f6 | 13068 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13069 | extended_remote_ops.to_longname = |
c906108c | 13070 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13071 | extended_remote_ops.to_doc = |
c906108c | 13072 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13073 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13074 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
13075 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
13076 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
13077 | extended_remote_ops.to_detach = extended_remote_detach; |
13078 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13079 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 13080 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
13081 | extended_remote_ops.to_supports_disable_randomization |
13082 | = extended_remote_supports_disable_randomization; | |
de0d863e | 13083 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
94585166 | 13084 | extended_remote_ops.to_follow_exec = remote_follow_exec; |
cbb8991c DB |
13085 | extended_remote_ops.to_insert_fork_catchpoint |
13086 | = remote_insert_fork_catchpoint; | |
13087 | extended_remote_ops.to_remove_fork_catchpoint | |
13088 | = remote_remove_fork_catchpoint; | |
13089 | extended_remote_ops.to_insert_vfork_catchpoint | |
13090 | = remote_insert_vfork_catchpoint; | |
13091 | extended_remote_ops.to_remove_vfork_catchpoint | |
13092 | = remote_remove_vfork_catchpoint; | |
d46addbb DB |
13093 | extended_remote_ops.to_insert_exec_catchpoint |
13094 | = remote_insert_exec_catchpoint; | |
13095 | extended_remote_ops.to_remove_exec_catchpoint | |
13096 | = remote_remove_exec_catchpoint; | |
0f71a2f6 JM |
13097 | } |
13098 | ||
6426a772 | 13099 | static int |
6a109b6b | 13100 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13101 | { |
5d93a237 TT |
13102 | struct remote_state *rs = get_remote_state (); |
13103 | ||
c6ebd6cf | 13104 | if (!target_async_permitted) |
75c99385 PA |
13105 | /* We only enable async when the user specifically asks for it. */ |
13106 | return 0; | |
13107 | ||
23860348 | 13108 | /* We're async whenever the serial device is. */ |
5d93a237 | 13109 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13110 | } |
13111 | ||
13112 | static int | |
6a109b6b | 13113 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13114 | { |
5d93a237 TT |
13115 | struct remote_state *rs = get_remote_state (); |
13116 | ||
c6ebd6cf | 13117 | if (!target_async_permitted) |
75c99385 PA |
13118 | /* We only enable async when the user specifically asks for it. */ |
13119 | return 0; | |
13120 | ||
23860348 | 13121 | /* We're async whenever the serial device is. */ |
5d93a237 | 13122 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13123 | } |
13124 | ||
2acceee2 JM |
13125 | /* Pass the SERIAL event on and up to the client. One day this code |
13126 | will be able to delay notifying the client of an event until the | |
23860348 | 13127 | point where an entire packet has been received. */ |
2acceee2 | 13128 | |
2acceee2 JM |
13129 | static serial_event_ftype remote_async_serial_handler; |
13130 | ||
6426a772 | 13131 | static void |
819cc324 | 13132 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13133 | { |
19ba03f4 | 13134 | struct remote_state *rs = (struct remote_state *) context; |
88b496c3 | 13135 | |
2acceee2 JM |
13136 | /* Don't propogate error information up to the client. Instead let |
13137 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13138 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13139 | } |
13140 | ||
74531fed PA |
13141 | static void |
13142 | remote_async_inferior_event_handler (gdb_client_data data) | |
13143 | { | |
13144 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13145 | } | |
13146 | ||
2acceee2 | 13147 | static void |
6a3753b3 | 13148 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13149 | { |
5d93a237 TT |
13150 | struct remote_state *rs = get_remote_state (); |
13151 | ||
6a3753b3 | 13152 | if (enable) |
2acceee2 | 13153 | { |
88b496c3 | 13154 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13155 | |
13156 | /* If there are pending events in the stop reply queue tell the | |
13157 | event loop to process them. */ | |
13158 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13159 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13160 | /* For simplicity, below we clear the pending events token |
13161 | without remembering whether it is marked, so here we always | |
13162 | mark it. If there's actually no pending notification to | |
13163 | process, this ends up being a no-op (other than a spurious | |
13164 | event-loop wakeup). */ | |
13165 | if (target_is_non_stop_p ()) | |
13166 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13167 | } |
13168 | else | |
b7d2e916 PA |
13169 | { |
13170 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13171 | /* If the core is disabling async, it doesn't want to be |
13172 | disturbed with target events. Clear all async event sources | |
13173 | too. */ | |
b7d2e916 | 13174 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13175 | if (target_is_non_stop_p ()) |
13176 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13177 | } |
6426a772 JM |
13178 | } |
13179 | ||
65706a29 PA |
13180 | /* Implementation of the to_thread_events method. */ |
13181 | ||
13182 | static void | |
13183 | remote_thread_events (struct target_ops *ops, int enable) | |
13184 | { | |
13185 | struct remote_state *rs = get_remote_state (); | |
13186 | size_t size = get_remote_packet_size (); | |
13187 | char *p = rs->buf; | |
13188 | ||
13189 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13190 | return; | |
13191 | ||
13192 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13193 | putpkt (rs->buf); | |
13194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13195 | ||
13196 | switch (packet_ok (rs->buf, | |
13197 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13198 | { | |
13199 | case PACKET_OK: | |
13200 | if (strcmp (rs->buf, "OK") != 0) | |
13201 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13202 | break; | |
13203 | case PACKET_ERROR: | |
13204 | warning (_("Remote failure reply: %s"), rs->buf); | |
13205 | break; | |
13206 | case PACKET_UNKNOWN: | |
13207 | break; | |
13208 | } | |
13209 | } | |
13210 | ||
5a2468f5 | 13211 | static void |
c2d11a7d | 13212 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13213 | { |
635c7e8a | 13214 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13215 | } |
13216 | ||
d471ea57 AC |
13217 | static void |
13218 | show_remote_cmd (char *args, int from_tty) | |
13219 | { | |
37a105a1 | 13220 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13221 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
13222 | struct cleanup *showlist_chain; |
13223 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 13224 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
13225 | |
13226 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
13227 | for (; list != NULL; list = list->next) | |
13228 | if (strcmp (list->name, "Z-packet") == 0) | |
13229 | continue; | |
427c3a89 DJ |
13230 | else if (list->type == not_set_cmd) |
13231 | /* Alias commands are exactly like the original, except they | |
13232 | don't have the normal type. */ | |
13233 | continue; | |
13234 | else | |
37a105a1 DJ |
13235 | { |
13236 | struct cleanup *option_chain | |
13237 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 13238 | |
37a105a1 DJ |
13239 | ui_out_field_string (uiout, "name", list->name); |
13240 | ui_out_text (uiout, ": "); | |
427c3a89 | 13241 | if (list->type == show_cmd) |
5b9afe8a | 13242 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
13243 | else |
13244 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
13245 | /* Close the tuple. */ |
13246 | do_cleanups (option_chain); | |
13247 | } | |
427c3a89 DJ |
13248 | |
13249 | /* Close the tuple. */ | |
13250 | do_cleanups (showlist_chain); | |
d471ea57 | 13251 | } |
5a2468f5 | 13252 | |
0f71a2f6 | 13253 | |
23860348 | 13254 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13255 | static void |
13256 | remote_new_objfile (struct objfile *objfile) | |
13257 | { | |
5d93a237 TT |
13258 | struct remote_state *rs = get_remote_state (); |
13259 | ||
13260 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13261 | remote_check_symbols (); |
dc8acb97 MS |
13262 | } |
13263 | ||
00bf0b85 SS |
13264 | /* Pull all the tracepoints defined on the target and create local |
13265 | data structures representing them. We don't want to create real | |
13266 | tracepoints yet, we don't want to mess up the user's existing | |
13267 | collection. */ | |
13268 | ||
13269 | static int | |
ab6617cc | 13270 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13271 | { |
00bf0b85 SS |
13272 | struct remote_state *rs = get_remote_state (); |
13273 | char *p; | |
d5551862 | 13274 | |
00bf0b85 SS |
13275 | /* Ask for a first packet of tracepoint definition. */ |
13276 | putpkt ("qTfP"); | |
13277 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13278 | p = rs->buf; | |
13279 | while (*p && *p != 'l') | |
d5551862 | 13280 | { |
00bf0b85 SS |
13281 | parse_tracepoint_definition (p, utpp); |
13282 | /* Ask for another packet of tracepoint definition. */ | |
13283 | putpkt ("qTsP"); | |
13284 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13285 | p = rs->buf; | |
d5551862 | 13286 | } |
00bf0b85 | 13287 | return 0; |
d5551862 SS |
13288 | } |
13289 | ||
00bf0b85 | 13290 | static int |
181e3713 TT |
13291 | remote_upload_trace_state_variables (struct target_ops *self, |
13292 | struct uploaded_tsv **utsvp) | |
d5551862 | 13293 | { |
00bf0b85 | 13294 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13295 | char *p; |
d5551862 | 13296 | |
00bf0b85 SS |
13297 | /* Ask for a first packet of variable definition. */ |
13298 | putpkt ("qTfV"); | |
d5551862 SS |
13299 | getpkt (&rs->buf, &rs->buf_size, 0); |
13300 | p = rs->buf; | |
00bf0b85 | 13301 | while (*p && *p != 'l') |
d5551862 | 13302 | { |
00bf0b85 SS |
13303 | parse_tsv_definition (p, utsvp); |
13304 | /* Ask for another packet of variable definition. */ | |
13305 | putpkt ("qTsV"); | |
d5551862 SS |
13306 | getpkt (&rs->buf, &rs->buf_size, 0); |
13307 | p = rs->buf; | |
13308 | } | |
00bf0b85 | 13309 | return 0; |
d5551862 SS |
13310 | } |
13311 | ||
c1e36e3e PA |
13312 | /* The "set/show range-stepping" show hook. */ |
13313 | ||
13314 | static void | |
13315 | show_range_stepping (struct ui_file *file, int from_tty, | |
13316 | struct cmd_list_element *c, | |
13317 | const char *value) | |
13318 | { | |
13319 | fprintf_filtered (file, | |
13320 | _("Debugger's willingness to use range stepping " | |
13321 | "is %s.\n"), value); | |
13322 | } | |
13323 | ||
13324 | /* The "set/show range-stepping" set hook. */ | |
13325 | ||
13326 | static void | |
13327 | set_range_stepping (char *ignore_args, int from_tty, | |
13328 | struct cmd_list_element *c) | |
13329 | { | |
5d93a237 TT |
13330 | struct remote_state *rs = get_remote_state (); |
13331 | ||
c1e36e3e PA |
13332 | /* Whene enabling, check whether range stepping is actually |
13333 | supported by the target, and warn if not. */ | |
13334 | if (use_range_stepping) | |
13335 | { | |
5d93a237 | 13336 | if (rs->remote_desc != NULL) |
c1e36e3e | 13337 | { |
4082afcc | 13338 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13339 | remote_vcont_probe (rs); |
13340 | ||
4082afcc | 13341 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13342 | && rs->supports_vCont.r) |
13343 | return; | |
13344 | } | |
13345 | ||
13346 | warning (_("Range stepping is not supported by the current target")); | |
13347 | } | |
13348 | } | |
13349 | ||
c906108c | 13350 | void |
fba45db2 | 13351 | _initialize_remote (void) |
c906108c | 13352 | { |
ea9c271d | 13353 | struct remote_state *rs; |
9a7071a8 | 13354 | struct cmd_list_element *cmd; |
6f937416 | 13355 | const char *cmd_name; |
ea9c271d | 13356 | |
0f71a2f6 | 13357 | /* architecture specific data */ |
2bc416ba | 13358 | remote_gdbarch_data_handle = |
23860348 | 13359 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13360 | remote_g_packet_data_handle = |
13361 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13362 | |
94585166 DB |
13363 | remote_pspace_data |
13364 | = register_program_space_data_with_cleanup (NULL, | |
13365 | remote_pspace_data_cleanup); | |
13366 | ||
ea9c271d DJ |
13367 | /* Initialize the per-target state. At the moment there is only one |
13368 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13369 | time. */ |
13370 | remote_state = new_remote_state (); | |
ea9c271d | 13371 | |
c906108c SS |
13372 | init_remote_ops (); |
13373 | add_target (&remote_ops); | |
13374 | ||
13375 | init_extended_remote_ops (); | |
13376 | add_target (&extended_remote_ops); | |
cce74817 | 13377 | |
dc8acb97 | 13378 | /* Hook into new objfile notification. */ |
06d3b283 | 13379 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13380 | /* We're no longer interested in notification events of an inferior |
13381 | when it exits. */ | |
13382 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13383 | |
b803fb0f | 13384 | /* Set up signal handlers. */ |
934b9bac | 13385 | async_sigint_remote_token = |
b803fb0f | 13386 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 13387 | async_sigint_remote_twice_token = |
6d549500 | 13388 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 13389 | |
c906108c SS |
13390 | #if 0 |
13391 | init_remote_threadtests (); | |
13392 | #endif | |
13393 | ||
722247f1 | 13394 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13395 | /* set/show remote ... */ |
d471ea57 | 13396 | |
1bedd215 | 13397 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13398 | Remote protocol specific variables\n\ |
13399 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13400 | the packets being used"), |
cff3e48b | 13401 | &remote_set_cmdlist, "set remote ", |
23860348 | 13402 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13403 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13404 | Remote protocol specific variables\n\ |
13405 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13406 | the packets being used"), |
cff3e48b | 13407 | &remote_show_cmdlist, "show remote ", |
23860348 | 13408 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13409 | |
1a966eab AC |
13410 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13411 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13412 | Argument is a single section name (default: all loaded sections).\n\ |
13413 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13414 | &cmdlist); |
13415 | ||
1a966eab AC |
13416 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13417 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13418 | maintenance packet TEXT\n\ |
13419 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13420 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13421 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13422 | terminating `#' character and checksum."), |
c906108c SS |
13423 | &maintenancelist); |
13424 | ||
7915a72c AC |
13425 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13426 | Set whether to send break if interrupted."), _("\ | |
13427 | Show whether to send break if interrupted."), _("\ | |
13428 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13429 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13430 | &setlist, &showlist); |
9a7071a8 JB |
13431 | cmd_name = "remotebreak"; |
13432 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13433 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13434 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13435 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13436 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13437 | ||
13438 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13439 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13440 | _("\ | |
9a7071a8 JB |
13441 | Set interrupt sequence to remote target."), _("\ |
13442 | Show interrupt sequence to remote target."), _("\ | |
13443 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13444 | NULL, show_interrupt_sequence, | |
13445 | &remote_set_cmdlist, | |
13446 | &remote_show_cmdlist); | |
13447 | ||
13448 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13449 | &interrupt_on_connect, _("\ | |
13450 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13451 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13452 | If set, interrupt sequence is sent to remote target."), | |
13453 | NULL, NULL, | |
13454 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13455 | |
23860348 | 13456 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13457 | |
1a966eab AC |
13458 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13459 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13460 | &setlist); |
1a966eab AC |
13461 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13462 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13463 | &showlist); |
13464 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13465 | set_memory_write_packet_size, _("\ |
13466 | Set the maximum number of bytes per memory-write packet.\n\ | |
13467 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13468 | default packet size. The actual limit is further reduced\n\ | |
13469 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13470 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13471 | &remote_set_cmdlist); |
13472 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13473 | set_memory_read_packet_size, _("\ |
13474 | Set the maximum number of bytes per memory-read packet.\n\ | |
13475 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13476 | default packet size. The actual limit is further reduced\n\ | |
13477 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13478 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13479 | &remote_set_cmdlist); |
13480 | add_cmd ("memory-write-packet-size", no_class, | |
13481 | show_memory_write_packet_size, | |
1a966eab | 13482 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13483 | &remote_show_cmdlist); |
13484 | add_cmd ("memory-read-packet-size", no_class, | |
13485 | show_memory_read_packet_size, | |
1a966eab | 13486 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13487 | &remote_show_cmdlist); |
c906108c | 13488 | |
b3f42336 | 13489 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13490 | &remote_hw_watchpoint_limit, _("\ |
13491 | Set the maximum number of target hardware watchpoints."), _("\ | |
13492 | Show the maximum number of target hardware watchpoints."), _("\ | |
13493 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13494 | NULL, NULL, /* FIXME: i18n: The maximum |
13495 | number of target hardware | |
13496 | watchpoints is %s. */ | |
b3f42336 | 13497 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13498 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13499 | &remote_hw_watchpoint_length_limit, _("\ | |
13500 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13501 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13502 | Specify a negative limit for unlimited."), | |
13503 | NULL, NULL, /* FIXME: i18n: The maximum | |
13504 | length (in bytes) of a target | |
13505 | hardware watchpoint is %s. */ | |
13506 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13507 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13508 | &remote_hw_breakpoint_limit, _("\ |
13509 | Set the maximum number of target hardware breakpoints."), _("\ | |
13510 | Show the maximum number of target hardware breakpoints."), _("\ | |
13511 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13512 | NULL, NULL, /* FIXME: i18n: The maximum |
13513 | number of target hardware | |
13514 | breakpoints is %s. */ | |
b3f42336 | 13515 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13516 | |
1b493192 PA |
13517 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13518 | &remote_address_size, _("\ | |
4d28ad1e AC |
13519 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13520 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13521 | NULL, |
13522 | NULL, /* FIXME: i18n: */ | |
13523 | &setlist, &showlist); | |
c906108c | 13524 | |
ca4f7f8b PA |
13525 | init_all_packet_configs (); |
13526 | ||
444abaca | 13527 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13528 | "X", "binary-download", 1); |
0f71a2f6 | 13529 | |
444abaca | 13530 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13531 | "vCont", "verbose-resume", 0); |
506fb367 | 13532 | |
89be2091 DJ |
13533 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13534 | "QPassSignals", "pass-signals", 0); | |
13535 | ||
9b224c5e PA |
13536 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13537 | "QProgramSignals", "program-signals", 0); | |
13538 | ||
444abaca | 13539 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13540 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13541 | |
444abaca | 13542 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13543 | "P", "set-register", 1); |
d471ea57 | 13544 | |
444abaca | 13545 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13546 | "p", "fetch-register", 1); |
b96ec7ac | 13547 | |
444abaca | 13548 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13549 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13550 | |
444abaca | 13551 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13552 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13553 | |
444abaca | 13554 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13555 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13556 | |
444abaca | 13557 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13558 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13559 | |
444abaca | 13560 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13561 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13562 | |
0876f84a DJ |
13563 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13564 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13565 | |
c78fa86a GB |
13566 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13567 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13568 | ||
23181151 DJ |
13569 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13570 | "qXfer:features:read", "target-features", 0); | |
13571 | ||
cfa9d6d9 DJ |
13572 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13573 | "qXfer:libraries:read", "library-info", 0); | |
13574 | ||
2268b414 JK |
13575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13576 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13577 | ||
fd79ecee DJ |
13578 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13579 | "qXfer:memory-map:read", "memory-map", 0); | |
13580 | ||
0e7f50da UW |
13581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13582 | "qXfer:spu:read", "read-spu-object", 0); | |
13583 | ||
13584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13585 | "qXfer:spu:write", "write-spu-object", 0); | |
13586 | ||
07e059b5 VP |
13587 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13588 | "qXfer:osdata:read", "osdata", 0); | |
13589 | ||
dc146f7c VP |
13590 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13591 | "qXfer:threads:read", "threads", 0); | |
13592 | ||
4aa995e1 PA |
13593 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13594 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13595 | ||
13596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13597 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13598 | ||
b3b9301e PA |
13599 | add_packet_config_cmd |
13600 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13601 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13602 | |
169081d0 TG |
13603 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13604 | "qXfer:uib:read", "unwind-info-block", 0); | |
13605 | ||
444abaca | 13606 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13607 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13608 | 0); |
13609 | ||
711e434b PM |
13610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13611 | "qGetTIBAddr", "get-thread-information-block-address", | |
13612 | 0); | |
13613 | ||
40ab02ce MS |
13614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13615 | "bc", "reverse-continue", 0); | |
13616 | ||
13617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13618 | "bs", "reverse-step", 0); | |
13619 | ||
be2a5f71 DJ |
13620 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13621 | "qSupported", "supported-packets", 0); | |
13622 | ||
08388c79 DE |
13623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13624 | "qSearch:memory", "search-memory", 0); | |
13625 | ||
bd3eecc3 PA |
13626 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13627 | "qTStatus", "trace-status", 0); | |
13628 | ||
15a201c8 GB |
13629 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13630 | "vFile:setfs", "hostio-setfs", 0); | |
13631 | ||
a6b151f1 DJ |
13632 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13633 | "vFile:open", "hostio-open", 0); | |
13634 | ||
13635 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13636 | "vFile:pread", "hostio-pread", 0); | |
13637 | ||
13638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13639 | "vFile:pwrite", "hostio-pwrite", 0); | |
13640 | ||
13641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13642 | "vFile:close", "hostio-close", 0); | |
13643 | ||
13644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13645 | "vFile:unlink", "hostio-unlink", 0); | |
13646 | ||
b9e7b9c3 UW |
13647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13648 | "vFile:readlink", "hostio-readlink", 0); | |
13649 | ||
0a93529c GB |
13650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13651 | "vFile:fstat", "hostio-fstat", 0); | |
13652 | ||
2d717e4f DJ |
13653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13654 | "vAttach", "attach", 0); | |
13655 | ||
13656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13657 | "vRun", "run", 0); | |
13658 | ||
a6f3e723 SL |
13659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13660 | "QStartNoAckMode", "noack", 0); | |
13661 | ||
82f73884 PA |
13662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13663 | "vKill", "kill", 0); | |
13664 | ||
0b16c5cf PA |
13665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13666 | "qAttached", "query-attached", 0); | |
13667 | ||
782b2b07 | 13668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13669 | "ConditionalTracepoints", |
13670 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13671 | |
13672 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13673 | "ConditionalBreakpoints", | |
13674 | "conditional-breakpoints", 0); | |
13675 | ||
d3ce09f5 SS |
13676 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13677 | "BreakpointCommands", | |
13678 | "breakpoint-commands", 0); | |
13679 | ||
7a697b8d SS |
13680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13681 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13682 | |
409873ef SS |
13683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13684 | "TracepointSource", "TracepointSource", 0); | |
13685 | ||
d914c394 SS |
13686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13687 | "QAllow", "allow", 0); | |
13688 | ||
0fb4aa4b PA |
13689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13690 | "StaticTracepoints", "static-tracepoints", 0); | |
13691 | ||
1e4d1764 YQ |
13692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13693 | "InstallInTrace", "install-in-trace", 0); | |
13694 | ||
0fb4aa4b PA |
13695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13696 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13697 | ||
78d85199 YQ |
13698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13699 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13700 | ||
03583c20 UW |
13701 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13702 | "QDisableRandomization", "disable-randomization", 0); | |
13703 | ||
d1feda86 YQ |
13704 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13705 | "QAgent", "agent", 0); | |
13706 | ||
f6f899bf HAQ |
13707 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13708 | "QTBuffer:size", "trace-buffer-size", 0); | |
13709 | ||
9accd112 MM |
13710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13711 | "Qbtrace:off", "disable-btrace", 0); | |
13712 | ||
13713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13714 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13715 | ||
13716 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13717 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13718 | |
13719 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13720 | "qXfer:btrace", "read-btrace", 0); | |
13721 | ||
f4abbc16 MM |
13722 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13723 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13724 | ||
d33501a5 MM |
13725 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13726 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13727 | ||
73b8c1fd PA |
13728 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13729 | "multiprocess-feature", "multiprocess-feature", 0); | |
13730 | ||
f7e6eed5 PA |
13731 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13732 | "swbreak-feature", "swbreak-feature", 0); | |
13733 | ||
13734 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13735 | "hwbreak-feature", "hwbreak-feature", 0); | |
13736 | ||
89245bc0 DB |
13737 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13738 | "fork-event-feature", "fork-event-feature", 0); | |
13739 | ||
13740 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13741 | "vfork-event-feature", "vfork-event-feature", 0); | |
13742 | ||
b20a6524 MM |
13743 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13744 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13745 | ||
750ce8d1 YQ |
13746 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
13747 | "vContSupported", "verbose-resume-supported", 0); | |
13748 | ||
94585166 DB |
13749 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13750 | "exec-event-feature", "exec-event-feature", 0); | |
13751 | ||
de979965 PA |
13752 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
13753 | "vCtrlC", "ctrl-c", 0); | |
13754 | ||
65706a29 PA |
13755 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
13756 | "QThreadEvents", "thread-events", 0); | |
13757 | ||
0b736949 DB |
13758 | /* Assert that we've registered "set remote foo-packet" commands |
13759 | for all packet configs. */ | |
ca4f7f8b PA |
13760 | { |
13761 | int i; | |
13762 | ||
13763 | for (i = 0; i < PACKET_MAX; i++) | |
13764 | { | |
13765 | /* Ideally all configs would have a command associated. Some | |
13766 | still don't though. */ | |
13767 | int excepted; | |
13768 | ||
13769 | switch (i) | |
13770 | { | |
13771 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13772 | case PACKET_EnableDisableTracepoints_feature: |
13773 | case PACKET_tracenz_feature: | |
13774 | case PACKET_DisconnectedTracing_feature: | |
13775 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13776 | case PACKET_qCRC: |
13777 | /* Additions to this list need to be well justified: | |
13778 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13779 | excepted = 1; |
13780 | break; | |
13781 | default: | |
13782 | excepted = 0; | |
13783 | break; | |
13784 | } | |
13785 | ||
13786 | /* This catches both forgetting to add a config command, and | |
13787 | forgetting to remove a packet from the exception list. */ | |
13788 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13789 | } | |
13790 | } | |
13791 | ||
37a105a1 DJ |
13792 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13793 | Z sub-packet has its own set and show commands, but users may | |
13794 | have sets to this variable in their .gdbinit files (or in their | |
13795 | documentation). */ | |
e9e68a56 | 13796 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13797 | &remote_Z_packet_detect, _("\ |
13798 | Set use of remote protocol `Z' packets"), _("\ | |
13799 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13800 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13801 | packets."), |
e9e68a56 | 13802 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13803 | show_remote_protocol_Z_packet_cmd, |
13804 | /* FIXME: i18n: Use of remote protocol | |
13805 | `Z' packets is %s. */ | |
e9e68a56 | 13806 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13807 | |
a6b151f1 DJ |
13808 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13809 | Manipulate files on the remote system\n\ | |
13810 | Transfer files to and from the remote target system."), | |
13811 | &remote_cmdlist, "remote ", | |
13812 | 0 /* allow-unknown */, &cmdlist); | |
13813 | ||
13814 | add_cmd ("put", class_files, remote_put_command, | |
13815 | _("Copy a local file to the remote system."), | |
13816 | &remote_cmdlist); | |
13817 | ||
13818 | add_cmd ("get", class_files, remote_get_command, | |
13819 | _("Copy a remote file to the local system."), | |
13820 | &remote_cmdlist); | |
13821 | ||
13822 | add_cmd ("delete", class_files, remote_delete_command, | |
13823 | _("Delete a remote file."), | |
13824 | &remote_cmdlist); | |
13825 | ||
2d717e4f | 13826 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13827 | &remote_exec_file_var, _("\ |
2d717e4f | 13828 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13829 | Show the remote pathname for \"run\""), NULL, |
13830 | set_remote_exec_file, | |
13831 | show_remote_exec_file, | |
13832 | &remote_set_cmdlist, | |
13833 | &remote_show_cmdlist); | |
2d717e4f | 13834 | |
c1e36e3e PA |
13835 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13836 | &use_range_stepping, _("\ | |
13837 | Enable or disable range stepping."), _("\ | |
13838 | Show whether target-assisted range stepping is enabled."), _("\ | |
13839 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13840 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13841 | of issuing multiple single-steps. This speeds up source level\n\ | |
13842 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13843 | stepping is supported by the target. The default is on."), | |
13844 | set_range_stepping, | |
13845 | show_range_stepping, | |
13846 | &setlist, | |
13847 | &showlist); | |
13848 | ||
449092f6 CV |
13849 | /* Eventually initialize fileio. See fileio.c */ |
13850 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13851 | |
ba348170 | 13852 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13853 | special ptids with it set to != 0. */ |
ba348170 PA |
13854 | magic_null_ptid = ptid_build (42000, -1, 1); |
13855 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13856 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13857 | |
13858 | target_buf_size = 2048; | |
224c3ddb | 13859 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 13860 | } |
10760264 | 13861 |