Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
618f726f | 3 | Copyright (C) 1988-2016 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 | ||
8020350c DB |
122 | static void remote_kill_k (void); |
123 | ||
136d6dae | 124 | static void remote_mourn (struct target_ops *ops); |
c906108c | 125 | |
a14ed312 | 126 | static void extended_remote_restart (void); |
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 | { | |
c21236dc PA |
769 | struct packet_reg *regs; |
770 | struct cleanup *old_chain; | |
771 | ||
772 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
773 | ||
224c3ddb | 774 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
775 | old_chain = make_cleanup (xfree, regs); |
776 | ||
54887903 | 777 | map_regcache_remote_table (gdbarch, regs); |
c21236dc PA |
778 | |
779 | *pnum = regs[regnum].pnum; | |
780 | *poffset = regs[regnum].offset; | |
781 | ||
782 | do_cleanups (old_chain); | |
783 | ||
784 | return *pnum != -1; | |
785 | } | |
786 | ||
787 | static void * | |
788 | init_remote_state (struct gdbarch *gdbarch) | |
789 | { | |
790 | struct remote_state *rs = get_remote_state_raw (); | |
791 | struct remote_arch_state *rsa; | |
792 | ||
793 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
794 | ||
795 | /* Use the architecture to build a regnum<->pnum table, which will be | |
796 | 1:1 unless a feature set specifies otherwise. */ | |
797 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
798 | gdbarch_num_regs (gdbarch), | |
799 | struct packet_reg); | |
800 | ||
74ca34ce DJ |
801 | /* Record the maximum possible size of the g packet - it may turn out |
802 | to be smaller. */ | |
c21236dc | 803 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 804 | |
0df8b418 | 805 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
806 | remote stubs have a hardwired buffer size of 400 bytes |
807 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
808 | as the maximum packet-size to ensure that the packet and an extra | |
809 | NUL character can always fit in the buffer. This stops GDB | |
810 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
811 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
812 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 813 | |
ea9c271d DJ |
814 | /* This one is filled in when a ``g'' packet is received. */ |
815 | rsa->actual_register_packet_size = 0; | |
816 | ||
817 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
818 | default, adjust the size accordingly. Remember that each byte is |
819 | encoded as two characters. 32 is the overhead for the packet | |
820 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 821 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 822 | little. */ |
ea9c271d DJ |
823 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
824 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 825 | |
ea9c271d DJ |
826 | /* Make sure that the packet buffer is plenty big enough for |
827 | this architecture. */ | |
828 | if (rs->buf_size < rsa->remote_packet_size) | |
829 | { | |
830 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 831 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 832 | } |
6d820c5c | 833 | |
ea9c271d DJ |
834 | return rsa; |
835 | } | |
836 | ||
837 | /* Return the current allowed size of a remote packet. This is | |
838 | inferred from the current architecture, and should be used to | |
839 | limit the length of outgoing packets. */ | |
840 | static long | |
841 | get_remote_packet_size (void) | |
842 | { | |
be2a5f71 | 843 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
844 | struct remote_arch_state *rsa = get_remote_arch_state (); |
845 | ||
be2a5f71 DJ |
846 | if (rs->explicit_packet_size) |
847 | return rs->explicit_packet_size; | |
848 | ||
ea9c271d | 849 | return rsa->remote_packet_size; |
d01949b6 AC |
850 | } |
851 | ||
ad10f812 | 852 | static struct packet_reg * |
ea9c271d | 853 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 854 | { |
f5656ead | 855 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
856 | return NULL; |
857 | else | |
ad10f812 | 858 | { |
ea9c271d | 859 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 860 | |
b323314b AC |
861 | gdb_assert (r->regnum == regnum); |
862 | return r; | |
ad10f812 | 863 | } |
ad10f812 AC |
864 | } |
865 | ||
866 | static struct packet_reg * | |
ea9c271d | 867 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 868 | { |
b323314b | 869 | int i; |
a744cf53 | 870 | |
f5656ead | 871 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 872 | { |
ea9c271d | 873 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 874 | |
b323314b AC |
875 | if (r->pnum == pnum) |
876 | return r; | |
ad10f812 AC |
877 | } |
878 | return NULL; | |
d01949b6 AC |
879 | } |
880 | ||
c906108c SS |
881 | static struct target_ops remote_ops; |
882 | ||
883 | static struct target_ops extended_remote_ops; | |
884 | ||
6426a772 JM |
885 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
886 | ``forever'' still use the normal timeout mechanism. This is | |
887 | currently used by the ASYNC code to guarentee that target reads | |
888 | during the initial connect always time-out. Once getpkt has been | |
889 | modified to return a timeout indication and, in turn | |
890 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 891 | this can go away. */ |
6426a772 JM |
892 | static int wait_forever_enabled_p = 1; |
893 | ||
9a7071a8 JB |
894 | /* Allow the user to specify what sequence to send to the remote |
895 | when he requests a program interruption: Although ^C is usually | |
896 | what remote systems expect (this is the default, here), it is | |
897 | sometimes preferable to send a break. On other systems such | |
898 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
899 | is required in order to interrupt the execution. */ | |
900 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
901 | const char interrupt_sequence_break[] = "BREAK"; | |
902 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 903 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
904 | { |
905 | interrupt_sequence_control_c, | |
906 | interrupt_sequence_break, | |
907 | interrupt_sequence_break_g, | |
908 | NULL | |
909 | }; | |
910 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
911 | ||
912 | static void | |
913 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
914 | struct cmd_list_element *c, | |
915 | const char *value) | |
916 | { | |
917 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
918 | fprintf_filtered (file, | |
919 | _("Send the ASCII ETX character (Ctrl-c) " | |
920 | "to the remote target to interrupt the " | |
921 | "execution of the program.\n")); | |
922 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
923 | fprintf_filtered (file, | |
924 | _("send a break signal to the remote target " | |
925 | "to interrupt the execution of the program.\n")); | |
926 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
927 | fprintf_filtered (file, | |
928 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
929 | "the remote target to interrupt the execution " | |
930 | "of Linux kernel.\n")); | |
931 | else | |
932 | internal_error (__FILE__, __LINE__, | |
933 | _("Invalid value for interrupt_sequence_mode: %s."), | |
934 | interrupt_sequence_mode); | |
935 | } | |
6426a772 | 936 | |
9a7071a8 JB |
937 | /* This boolean variable specifies whether interrupt_sequence is sent |
938 | to the remote target when gdb connects to it. | |
939 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
940 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
941 | static int interrupt_on_connect = 0; | |
c906108c | 942 | |
9a7071a8 JB |
943 | /* This variable is used to implement the "set/show remotebreak" commands. |
944 | Since these commands are now deprecated in favor of "set/show remote | |
945 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
946 | static int remote_break; |
947 | ||
9a7071a8 JB |
948 | static void |
949 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
950 | { | |
951 | if (remote_break) | |
952 | interrupt_sequence_mode = interrupt_sequence_break; | |
953 | else | |
954 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
955 | } | |
956 | ||
957 | static void | |
958 | show_remotebreak (struct ui_file *file, int from_tty, | |
959 | struct cmd_list_element *c, | |
960 | const char *value) | |
961 | { | |
962 | } | |
963 | ||
c906108c SS |
964 | /* This variable sets the number of bits in an address that are to be |
965 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 966 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
967 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
968 | initial implementation of remote.c restricted the address sent in | |
969 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
970 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
971 | address was never sent. Since fixing this bug may cause a break in | |
972 | some remote targets this variable is principly provided to | |
23860348 | 973 | facilitate backward compatibility. */ |
c906108c | 974 | |
883b9c6c | 975 | static unsigned int remote_address_size; |
c906108c | 976 | |
75c99385 PA |
977 | /* Temporary to track who currently owns the terminal. See |
978 | remote_terminal_* for more details. */ | |
6426a772 JM |
979 | |
980 | static int remote_async_terminal_ours_p; | |
981 | ||
11cf8741 | 982 | \f |
11cf8741 | 983 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
984 | memory read/write packet. MIN (rsa->remote_packet_size, |
985 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 986 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
987 | (speed up transfers). The variables ``preferred_*'' (the user |
988 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 989 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
990 | |
991 | struct memory_packet_config | |
992 | { | |
993 | char *name; | |
994 | long size; | |
995 | int fixed_p; | |
996 | }; | |
997 | ||
a5c0808e PA |
998 | /* The default max memory-write-packet-size. The 16k is historical. |
999 | (It came from older GDB's using alloca for buffers and the | |
1000 | knowledge (folklore?) that some hosts don't cope very well with | |
1001 | large alloca calls.) */ | |
1002 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1003 | ||
1004 | /* The minimum remote packet size for memory transfers. Ensures we | |
1005 | can write at least one byte. */ | |
1006 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1007 | ||
11cf8741 JM |
1008 | /* Compute the current size of a read/write packet. Since this makes |
1009 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1010 | ||
1011 | static long | |
1012 | get_memory_packet_size (struct memory_packet_config *config) | |
1013 | { | |
d01949b6 | 1014 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1015 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1016 | ||
11cf8741 JM |
1017 | long what_they_get; |
1018 | if (config->fixed_p) | |
1019 | { | |
1020 | if (config->size <= 0) | |
a5c0808e | 1021 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1022 | else |
1023 | what_they_get = config->size; | |
1024 | } | |
1025 | else | |
1026 | { | |
ea9c271d | 1027 | what_they_get = get_remote_packet_size (); |
23860348 | 1028 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1029 | if (config->size > 0 |
1030 | && what_they_get > config->size) | |
1031 | what_they_get = config->size; | |
be2a5f71 DJ |
1032 | |
1033 | /* Limit it to the size of the targets ``g'' response unless we have | |
1034 | permission from the stub to use a larger packet size. */ | |
1035 | if (rs->explicit_packet_size == 0 | |
1036 | && rsa->actual_register_packet_size > 0 | |
1037 | && what_they_get > rsa->actual_register_packet_size) | |
1038 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1039 | } |
a5c0808e PA |
1040 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1041 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1042 | |
1043 | /* Make sure there is room in the global buffer for this packet | |
1044 | (including its trailing NUL byte). */ | |
1045 | if (rs->buf_size < what_they_get + 1) | |
1046 | { | |
1047 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1048 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1049 | } |
1050 | ||
11cf8741 JM |
1051 | return what_they_get; |
1052 | } | |
1053 | ||
0df8b418 | 1054 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1055 | something really big then do a sanity check. */ |
11cf8741 JM |
1056 | |
1057 | static void | |
1058 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1059 | { | |
1060 | int fixed_p = config->fixed_p; | |
1061 | long size = config->size; | |
a744cf53 | 1062 | |
11cf8741 | 1063 | if (args == NULL) |
8a3fe4f8 | 1064 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1065 | else if (strcmp (args, "hard") == 0 |
1066 | || strcmp (args, "fixed") == 0) | |
1067 | fixed_p = 1; | |
1068 | else if (strcmp (args, "soft") == 0 | |
1069 | || strcmp (args, "limit") == 0) | |
1070 | fixed_p = 0; | |
1071 | else | |
1072 | { | |
1073 | char *end; | |
a744cf53 | 1074 | |
11cf8741 JM |
1075 | size = strtoul (args, &end, 0); |
1076 | if (args == end) | |
8a3fe4f8 | 1077 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1078 | |
1079 | /* Instead of explicitly capping the size of a packet to or | |
1080 | disallowing it, the user is allowed to set the size to | |
1081 | something arbitrarily large. */ | |
11cf8741 | 1082 | } |
a5c0808e PA |
1083 | |
1084 | /* So that the query shows the correct value. */ | |
1085 | if (size <= 0) | |
1086 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1087 | ||
23860348 | 1088 | /* Extra checks? */ |
11cf8741 JM |
1089 | if (fixed_p && !config->fixed_p) |
1090 | { | |
e2e0b3e5 AC |
1091 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1092 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1093 | config->name, size)) |
8a3fe4f8 | 1094 | error (_("Packet size not changed.")); |
11cf8741 | 1095 | } |
23860348 | 1096 | /* Update the config. */ |
11cf8741 JM |
1097 | config->fixed_p = fixed_p; |
1098 | config->size = size; | |
1099 | } | |
1100 | ||
1101 | static void | |
1102 | show_memory_packet_size (struct memory_packet_config *config) | |
1103 | { | |
a3f17187 | 1104 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1105 | if (config->fixed_p) |
a3f17187 | 1106 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1107 | get_memory_packet_size (config)); |
1108 | else | |
a3f17187 | 1109 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1110 | get_memory_packet_size (config)); |
1111 | } | |
1112 | ||
1113 | static struct memory_packet_config memory_write_packet_config = | |
1114 | { | |
1115 | "memory-write-packet-size", | |
1116 | }; | |
1117 | ||
1118 | static void | |
1119 | set_memory_write_packet_size (char *args, int from_tty) | |
1120 | { | |
1121 | set_memory_packet_size (args, &memory_write_packet_config); | |
1122 | } | |
1123 | ||
1124 | static void | |
1125 | show_memory_write_packet_size (char *args, int from_tty) | |
1126 | { | |
1127 | show_memory_packet_size (&memory_write_packet_config); | |
1128 | } | |
1129 | ||
1130 | static long | |
1131 | get_memory_write_packet_size (void) | |
1132 | { | |
1133 | return get_memory_packet_size (&memory_write_packet_config); | |
1134 | } | |
1135 | ||
1136 | static struct memory_packet_config memory_read_packet_config = | |
1137 | { | |
1138 | "memory-read-packet-size", | |
1139 | }; | |
1140 | ||
1141 | static void | |
1142 | set_memory_read_packet_size (char *args, int from_tty) | |
1143 | { | |
1144 | set_memory_packet_size (args, &memory_read_packet_config); | |
1145 | } | |
1146 | ||
1147 | static void | |
1148 | show_memory_read_packet_size (char *args, int from_tty) | |
1149 | { | |
1150 | show_memory_packet_size (&memory_read_packet_config); | |
1151 | } | |
1152 | ||
1153 | static long | |
1154 | get_memory_read_packet_size (void) | |
1155 | { | |
1156 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1157 | |
11cf8741 JM |
1158 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1159 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1160 | increased beyond this. */ |
1161 | if (size > get_remote_packet_size ()) | |
1162 | size = get_remote_packet_size (); | |
11cf8741 JM |
1163 | return size; |
1164 | } | |
1165 | ||
11cf8741 | 1166 | \f |
5a2468f5 | 1167 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1168 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1169 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1170 | |
1171 | enum packet_support | |
1172 | { | |
1173 | PACKET_SUPPORT_UNKNOWN = 0, | |
1174 | PACKET_ENABLE, | |
1175 | PACKET_DISABLE | |
1176 | }; | |
1177 | ||
5a2468f5 JM |
1178 | struct packet_config |
1179 | { | |
bb572ddd DJ |
1180 | const char *name; |
1181 | const char *title; | |
4082afcc PA |
1182 | |
1183 | /* If auto, GDB auto-detects support for this packet or feature, | |
1184 | either through qSupported, or by trying the packet and looking | |
1185 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1186 | packet. If false, the packet is disabled. Configs that don't |
1187 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1188 | enum auto_boolean detect; |
4082afcc PA |
1189 | |
1190 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1191 | enum packet_support support; |
1192 | }; | |
1193 | ||
d471ea57 | 1194 | /* Analyze a packet's return value and update the packet config |
23860348 | 1195 | accordingly. */ |
d471ea57 AC |
1196 | |
1197 | enum packet_result | |
1198 | { | |
1199 | PACKET_ERROR, | |
1200 | PACKET_OK, | |
1201 | PACKET_UNKNOWN | |
1202 | }; | |
1203 | ||
4082afcc PA |
1204 | static enum packet_support packet_config_support (struct packet_config *config); |
1205 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1206 | |
1207 | static void | |
fba45db2 | 1208 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1209 | { |
1210 | char *support = "internal-error"; | |
a744cf53 | 1211 | |
4082afcc | 1212 | switch (packet_config_support (config)) |
5a2468f5 JM |
1213 | { |
1214 | case PACKET_ENABLE: | |
1215 | support = "enabled"; | |
1216 | break; | |
1217 | case PACKET_DISABLE: | |
1218 | support = "disabled"; | |
1219 | break; | |
1220 | case PACKET_SUPPORT_UNKNOWN: | |
1221 | support = "unknown"; | |
1222 | break; | |
1223 | } | |
1224 | switch (config->detect) | |
1225 | { | |
7f19b9a2 | 1226 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1227 | printf_filtered (_("Support for the `%s' packet " |
1228 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1229 | config->name, support); |
5a2468f5 | 1230 | break; |
7f19b9a2 AC |
1231 | case AUTO_BOOLEAN_TRUE: |
1232 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1233 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1234 | config->name, support); | |
8e248173 | 1235 | break; |
5a2468f5 JM |
1236 | } |
1237 | } | |
1238 | ||
1239 | static void | |
bb572ddd DJ |
1240 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1241 | const char *title, int legacy) | |
d471ea57 | 1242 | { |
5a2468f5 JM |
1243 | char *set_doc; |
1244 | char *show_doc; | |
d471ea57 | 1245 | char *cmd_name; |
3ed07be4 | 1246 | |
5a2468f5 JM |
1247 | config->name = name; |
1248 | config->title = title; | |
b435e160 AC |
1249 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1250 | name, title); | |
3e43a32a MS |
1251 | show_doc = xstrprintf ("Show current use of remote " |
1252 | "protocol `%s' (%s) packet", | |
b435e160 | 1253 | name, title); |
d471ea57 | 1254 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1255 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1256 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1257 | &config->detect, set_doc, |
1258 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1259 | NULL, |
bb572ddd DJ |
1260 | show_remote_protocol_packet_cmd, |
1261 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1262 | /* The command code copies the documentation strings. */ |
1263 | xfree (set_doc); | |
1264 | xfree (show_doc); | |
23860348 | 1265 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1266 | if (legacy) |
1267 | { | |
1268 | char *legacy_name; | |
a744cf53 | 1269 | |
b435e160 | 1270 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1271 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1272 | &remote_set_cmdlist); |
d471ea57 | 1273 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1274 | &remote_show_cmdlist); |
d471ea57 | 1275 | } |
5a2468f5 JM |
1276 | } |
1277 | ||
d471ea57 | 1278 | static enum packet_result |
a76d924d | 1279 | packet_check_result (const char *buf) |
5a2468f5 | 1280 | { |
d471ea57 | 1281 | if (buf[0] != '\0') |
5a2468f5 | 1282 | { |
d471ea57 | 1283 | /* The stub recognized the packet request. Check that the |
23860348 | 1284 | operation succeeded. */ |
a76d924d DJ |
1285 | if (buf[0] == 'E' |
1286 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1287 | && buf[3] == '\0') | |
1288 | /* "Enn" - definitly an error. */ | |
1289 | return PACKET_ERROR; | |
1290 | ||
1291 | /* Always treat "E." as an error. This will be used for | |
1292 | more verbose error messages, such as E.memtypes. */ | |
1293 | if (buf[0] == 'E' && buf[1] == '.') | |
1294 | return PACKET_ERROR; | |
1295 | ||
1296 | /* The packet may or may not be OK. Just assume it is. */ | |
1297 | return PACKET_OK; | |
1298 | } | |
1299 | else | |
1300 | /* The stub does not support the packet. */ | |
1301 | return PACKET_UNKNOWN; | |
1302 | } | |
1303 | ||
1304 | static enum packet_result | |
1305 | packet_ok (const char *buf, struct packet_config *config) | |
1306 | { | |
1307 | enum packet_result result; | |
1308 | ||
4082afcc PA |
1309 | if (config->detect != AUTO_BOOLEAN_TRUE |
1310 | && config->support == PACKET_DISABLE) | |
1311 | internal_error (__FILE__, __LINE__, | |
1312 | _("packet_ok: attempt to use a disabled packet")); | |
1313 | ||
a76d924d DJ |
1314 | result = packet_check_result (buf); |
1315 | switch (result) | |
1316 | { | |
1317 | case PACKET_OK: | |
1318 | case PACKET_ERROR: | |
1319 | /* The stub recognized the packet request. */ | |
4082afcc | 1320 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1321 | { |
d471ea57 AC |
1322 | if (remote_debug) |
1323 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1324 | "Packet %s (%s) is supported\n", |
1325 | config->name, config->title); | |
d471ea57 | 1326 | config->support = PACKET_ENABLE; |
d471ea57 | 1327 | } |
a76d924d DJ |
1328 | break; |
1329 | case PACKET_UNKNOWN: | |
23860348 | 1330 | /* The stub does not support the packet. */ |
4082afcc PA |
1331 | if (config->detect == AUTO_BOOLEAN_AUTO |
1332 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1333 | { |
4082afcc PA |
1334 | /* If the stub previously indicated that the packet was |
1335 | supported then there is a protocol error. */ | |
1336 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1337 | config->name, config->title); | |
1338 | } | |
1339 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1340 | { | |
1341 | /* The user set it wrong. */ | |
1342 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1343 | config->name, config->title); | |
d471ea57 | 1344 | } |
4082afcc PA |
1345 | |
1346 | if (remote_debug) | |
1347 | fprintf_unfiltered (gdb_stdlog, | |
1348 | "Packet %s (%s) is NOT supported\n", | |
1349 | config->name, config->title); | |
1350 | config->support = PACKET_DISABLE; | |
a76d924d | 1351 | break; |
5a2468f5 | 1352 | } |
a76d924d DJ |
1353 | |
1354 | return result; | |
5a2468f5 JM |
1355 | } |
1356 | ||
444abaca DJ |
1357 | enum { |
1358 | PACKET_vCont = 0, | |
1359 | PACKET_X, | |
1360 | PACKET_qSymbol, | |
1361 | PACKET_P, | |
1362 | PACKET_p, | |
1363 | PACKET_Z0, | |
1364 | PACKET_Z1, | |
1365 | PACKET_Z2, | |
1366 | PACKET_Z3, | |
1367 | PACKET_Z4, | |
15a201c8 | 1368 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1369 | PACKET_vFile_open, |
1370 | PACKET_vFile_pread, | |
1371 | PACKET_vFile_pwrite, | |
1372 | PACKET_vFile_close, | |
1373 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1374 | PACKET_vFile_readlink, |
0a93529c | 1375 | PACKET_vFile_fstat, |
0876f84a | 1376 | PACKET_qXfer_auxv, |
23181151 | 1377 | PACKET_qXfer_features, |
c78fa86a | 1378 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1379 | PACKET_qXfer_libraries, |
2268b414 | 1380 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1381 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1382 | PACKET_qXfer_spu_read, |
1383 | PACKET_qXfer_spu_write, | |
07e059b5 | 1384 | PACKET_qXfer_osdata, |
dc146f7c | 1385 | PACKET_qXfer_threads, |
0fb4aa4b | 1386 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1387 | PACKET_qXfer_traceframe_info, |
169081d0 | 1388 | PACKET_qXfer_uib, |
711e434b | 1389 | PACKET_qGetTIBAddr, |
444abaca | 1390 | PACKET_qGetTLSAddr, |
be2a5f71 | 1391 | PACKET_qSupported, |
bd3eecc3 | 1392 | PACKET_qTStatus, |
89be2091 | 1393 | PACKET_QPassSignals, |
82075af2 | 1394 | PACKET_QCatchSyscalls, |
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 | ||
f2faf941 PA |
1491 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1492 | PACKET_no_resumed, | |
1493 | ||
444abaca DJ |
1494 | PACKET_MAX |
1495 | }; | |
506fb367 | 1496 | |
444abaca | 1497 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1498 | |
fef3cb9f JK |
1499 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
1500 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
1501 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
1502 | invalid reply and GDB would return error in | |
1503 | remote_hostio_set_filesystem, making remote files access impossible. | |
1504 | If this variable is non-zero it means the remote gdbserver is buggy | |
1505 | and any not yet detected packets are assumed as unsupported. */ | |
1506 | static int unknown_v_replies_ok; | |
1507 | ||
f7e6eed5 PA |
1508 | /* Returns the packet's corresponding "set remote foo-packet" command |
1509 | state. See struct packet_config for more details. */ | |
1510 | ||
1511 | static enum auto_boolean | |
1512 | packet_set_cmd_state (int packet) | |
1513 | { | |
1514 | return remote_protocol_packets[packet].detect; | |
1515 | } | |
1516 | ||
4082afcc PA |
1517 | /* Returns whether a given packet or feature is supported. This takes |
1518 | into account the state of the corresponding "set remote foo-packet" | |
1519 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1520 | |
4082afcc PA |
1521 | static enum packet_support |
1522 | packet_config_support (struct packet_config *config) | |
1523 | { | |
1524 | switch (config->detect) | |
444abaca | 1525 | { |
4082afcc PA |
1526 | case AUTO_BOOLEAN_TRUE: |
1527 | return PACKET_ENABLE; | |
1528 | case AUTO_BOOLEAN_FALSE: | |
1529 | return PACKET_DISABLE; | |
1530 | case AUTO_BOOLEAN_AUTO: | |
fef3cb9f JK |
1531 | if (unknown_v_replies_ok && config->name != NULL |
1532 | && config->name[0] == 'v') | |
1533 | return PACKET_DISABLE; | |
4082afcc PA |
1534 | return config->support; |
1535 | default: | |
1536 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1537 | } |
4082afcc PA |
1538 | } |
1539 | ||
1540 | /* Same as packet_config_support, but takes the packet's enum value as | |
1541 | argument. */ | |
1542 | ||
1543 | static enum packet_support | |
1544 | packet_support (int packet) | |
1545 | { | |
1546 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1547 | ||
1548 | return packet_config_support (config); | |
dc8acb97 MS |
1549 | } |
1550 | ||
5a2468f5 | 1551 | static void |
444abaca DJ |
1552 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1553 | struct cmd_list_element *c, | |
1554 | const char *value) | |
5a2468f5 | 1555 | { |
444abaca | 1556 | struct packet_config *packet; |
5a2468f5 | 1557 | |
444abaca DJ |
1558 | for (packet = remote_protocol_packets; |
1559 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1560 | packet++) | |
1561 | { | |
1562 | if (&packet->detect == c->var) | |
1563 | { | |
1564 | show_packet_config_cmd (packet); | |
1565 | return; | |
1566 | } | |
1567 | } | |
9b20d036 | 1568 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1569 | c->name); |
5a2468f5 JM |
1570 | } |
1571 | ||
d471ea57 AC |
1572 | /* Should we try one of the 'Z' requests? */ |
1573 | ||
1574 | enum Z_packet_type | |
1575 | { | |
1576 | Z_PACKET_SOFTWARE_BP, | |
1577 | Z_PACKET_HARDWARE_BP, | |
1578 | Z_PACKET_WRITE_WP, | |
1579 | Z_PACKET_READ_WP, | |
1580 | Z_PACKET_ACCESS_WP, | |
1581 | NR_Z_PACKET_TYPES | |
1582 | }; | |
96baa820 | 1583 | |
d471ea57 | 1584 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1585 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1586 | |
7f19b9a2 | 1587 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1588 | |
1589 | static void | |
fba45db2 KB |
1590 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1591 | struct cmd_list_element *c) | |
96baa820 | 1592 | { |
d471ea57 | 1593 | int i; |
a744cf53 | 1594 | |
d471ea57 | 1595 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1596 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1597 | } |
1598 | ||
1599 | static void | |
08546159 AC |
1600 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1601 | struct cmd_list_element *c, | |
1602 | const char *value) | |
96baa820 | 1603 | { |
d471ea57 | 1604 | int i; |
a744cf53 | 1605 | |
d471ea57 AC |
1606 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1607 | { | |
444abaca | 1608 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1609 | } |
96baa820 JM |
1610 | } |
1611 | ||
4082afcc PA |
1612 | /* Returns true if the multi-process extensions are in effect. */ |
1613 | ||
1614 | static int | |
1615 | remote_multi_process_p (struct remote_state *rs) | |
1616 | { | |
1617 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1618 | } | |
1619 | ||
de0d863e DB |
1620 | /* Returns true if fork events are supported. */ |
1621 | ||
1622 | static int | |
1623 | remote_fork_event_p (struct remote_state *rs) | |
1624 | { | |
1625 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1626 | } | |
1627 | ||
c269dbdb DB |
1628 | /* Returns true if vfork events are supported. */ |
1629 | ||
1630 | static int | |
1631 | remote_vfork_event_p (struct remote_state *rs) | |
1632 | { | |
1633 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1634 | } | |
1635 | ||
d46addbb DB |
1636 | /* Returns true if exec events are supported. */ |
1637 | ||
1638 | static int | |
1639 | remote_exec_event_p (struct remote_state *rs) | |
1640 | { | |
1641 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1642 | } | |
1643 | ||
cbb8991c DB |
1644 | /* Insert fork catchpoint target routine. If fork events are enabled |
1645 | then return success, nothing more to do. */ | |
1646 | ||
1647 | static int | |
1648 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1649 | { | |
1650 | struct remote_state *rs = get_remote_state (); | |
1651 | ||
1652 | return !remote_fork_event_p (rs); | |
1653 | } | |
1654 | ||
1655 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1656 | return success. */ | |
1657 | ||
1658 | static int | |
1659 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1660 | { | |
1661 | return 0; | |
1662 | } | |
1663 | ||
1664 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1665 | then return success, nothing more to do. */ | |
1666 | ||
1667 | static int | |
1668 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1669 | { | |
1670 | struct remote_state *rs = get_remote_state (); | |
1671 | ||
1672 | return !remote_vfork_event_p (rs); | |
1673 | } | |
1674 | ||
1675 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1676 | return success. */ | |
1677 | ||
1678 | static int | |
1679 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1680 | { | |
1681 | return 0; | |
1682 | } | |
1683 | ||
d46addbb DB |
1684 | /* Insert exec catchpoint target routine. If exec events are |
1685 | enabled, just return success. */ | |
1686 | ||
1687 | static int | |
1688 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1689 | { | |
1690 | struct remote_state *rs = get_remote_state (); | |
1691 | ||
1692 | return !remote_exec_event_p (rs); | |
1693 | } | |
1694 | ||
1695 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1696 | return success. */ | |
1697 | ||
1698 | static int | |
1699 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1700 | { | |
1701 | return 0; | |
1702 | } | |
1703 | ||
23860348 | 1704 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1705 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1706 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1707 | |
74531fed PA |
1708 | \f |
1709 | /* Asynchronous signal handle registered as event loop source for | |
1710 | when we have pending events ready to be passed to the core. */ | |
1711 | ||
1712 | static struct async_event_handler *remote_async_inferior_event_token; | |
1713 | ||
c906108c SS |
1714 | \f |
1715 | ||
79d7f229 PA |
1716 | static ptid_t magic_null_ptid; |
1717 | static ptid_t not_sent_ptid; | |
1718 | static ptid_t any_thread_ptid; | |
1719 | ||
0b16c5cf PA |
1720 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1721 | detach instead of killing it when bailing out). */ | |
1722 | ||
1723 | static int | |
1724 | remote_query_attached (int pid) | |
1725 | { | |
1726 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1727 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1728 | |
4082afcc | 1729 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1730 | return 0; |
1731 | ||
1732 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1733 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1734 | else |
bba74b36 | 1735 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1736 | |
1737 | putpkt (rs->buf); | |
1738 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1739 | ||
1740 | switch (packet_ok (rs->buf, | |
1554e9be | 1741 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1742 | { |
1743 | case PACKET_OK: | |
1744 | if (strcmp (rs->buf, "1") == 0) | |
1745 | return 1; | |
1746 | break; | |
1747 | case PACKET_ERROR: | |
1748 | warning (_("Remote failure reply: %s"), rs->buf); | |
1749 | break; | |
1750 | case PACKET_UNKNOWN: | |
1751 | break; | |
1752 | } | |
1753 | ||
1754 | return 0; | |
1755 | } | |
1756 | ||
49c62f2e PA |
1757 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1758 | has been invented by GDB, instead of reported by the target. Since | |
1759 | we can be connected to a remote system before before knowing about | |
1760 | any inferior, mark the target with execution when we find the first | |
1761 | inferior. If ATTACHED is 1, then we had just attached to this | |
1762 | inferior. If it is 0, then we just created this inferior. If it | |
1763 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1764 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1765 | attempt to open this inferior's executable as the main executable | |
1766 | if no main executable is open already. */ | |
1941c569 PA |
1767 | |
1768 | static struct inferior * | |
1b6e6f5c GB |
1769 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1770 | int try_open_exec) | |
1941c569 | 1771 | { |
1941c569 PA |
1772 | struct inferior *inf; |
1773 | ||
0b16c5cf PA |
1774 | /* Check whether this process we're learning about is to be |
1775 | considered attached, or if is to be considered to have been | |
1776 | spawned by the stub. */ | |
1777 | if (attached == -1) | |
1778 | attached = remote_query_attached (pid); | |
1779 | ||
f5656ead | 1780 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1781 | { |
1782 | /* If the target shares code across all inferiors, then every | |
1783 | attach adds a new inferior. */ | |
1784 | inf = add_inferior (pid); | |
1785 | ||
1786 | /* ... and every inferior is bound to the same program space. | |
1787 | However, each inferior may still have its own address | |
1788 | space. */ | |
1789 | inf->aspace = maybe_new_address_space (); | |
1790 | inf->pspace = current_program_space; | |
1791 | } | |
1792 | else | |
1793 | { | |
1794 | /* In the traditional debugging scenario, there's a 1-1 match | |
1795 | between program/address spaces. We simply bind the inferior | |
1796 | to the program space's address space. */ | |
1797 | inf = current_inferior (); | |
1798 | inferior_appeared (inf, pid); | |
1799 | } | |
1941c569 | 1800 | |
0b16c5cf | 1801 | inf->attach_flag = attached; |
49c62f2e | 1802 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1803 | |
1b6e6f5c GB |
1804 | /* If no main executable is currently open then attempt to |
1805 | open the file that was executed to create this inferior. */ | |
835205d0 | 1806 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1807 | exec_file_locate_attach (pid, 1); |
1808 | ||
1941c569 PA |
1809 | return inf; |
1810 | } | |
1811 | ||
1812 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1813 | according to RUNNING. */ | |
1814 | ||
c906108c | 1815 | static void |
0d5b594f | 1816 | remote_add_thread (ptid_t ptid, int running, int executing) |
c906108c | 1817 | { |
b7ea362b PA |
1818 | struct remote_state *rs = get_remote_state (); |
1819 | ||
1820 | /* GDB historically didn't pull threads in the initial connection | |
1821 | setup. If the remote target doesn't even have a concept of | |
1822 | threads (e.g., a bare-metal target), even if internally we | |
1823 | consider that a single-threaded target, mentioning a new thread | |
1824 | might be confusing to the user. Be silent then, preserving the | |
1825 | age old behavior. */ | |
1826 | if (rs->starting_up) | |
1827 | add_thread_silent (ptid); | |
1828 | else | |
1829 | add_thread (ptid); | |
1941c569 | 1830 | |
0d5b594f | 1831 | set_executing (ptid, executing); |
1941c569 PA |
1832 | set_running (ptid, running); |
1833 | } | |
1834 | ||
1835 | /* Come here when we learn about a thread id from the remote target. | |
1836 | It may be the first time we hear about such thread, so take the | |
1837 | opportunity to add it to GDB's thread list. In case this is the | |
1838 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
1839 | GDB's inferior list as well. EXECUTING indicates whether the |
1840 | thread is (internally) executing or stopped. */ | |
1941c569 PA |
1841 | |
1842 | static void | |
0d5b594f | 1843 | remote_notice_new_inferior (ptid_t currthread, int executing) |
1941c569 | 1844 | { |
0d5b594f PA |
1845 | /* In non-stop mode, we assume new found threads are (externally) |
1846 | running until proven otherwise with a stop reply. In all-stop, | |
1847 | we can only get here if all threads are stopped. */ | |
1848 | int running = target_is_non_stop_p () ? 1 : 0; | |
1849 | ||
c906108c SS |
1850 | /* If this is a new thread, add it to GDB's thread list. |
1851 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1852 | |
1853 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1854 | { | |
1855 | /* We're seeing an event on a thread id we knew had exited. | |
1856 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 1857 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
1858 | return; |
1859 | } | |
1860 | ||
79d7f229 | 1861 | if (!in_thread_list (currthread)) |
c0a2216e | 1862 | { |
1941c569 | 1863 | struct inferior *inf = NULL; |
bad34192 | 1864 | int pid = ptid_get_pid (currthread); |
1941c569 | 1865 | |
bad34192 PA |
1866 | if (ptid_is_pid (inferior_ptid) |
1867 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1868 | { |
1869 | /* inferior_ptid has no thread member yet. This can happen | |
1870 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1871 | stub doesn't support qC. This is the first stop reported | |
1872 | after an attach, so this is the main thread. Update the | |
1873 | ptid in the thread list. */ | |
bad34192 PA |
1874 | if (in_thread_list (pid_to_ptid (pid))) |
1875 | thread_change_ptid (inferior_ptid, currthread); | |
1876 | else | |
1877 | { | |
0d5b594f | 1878 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
1879 | inferior_ptid = currthread; |
1880 | } | |
dc146f7c | 1881 | return; |
c0a2216e | 1882 | } |
82f73884 PA |
1883 | |
1884 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1885 | { |
1886 | /* inferior_ptid is not set yet. This can happen with the | |
1887 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1888 | doesn't support qC. This is the first stop reported | |
1889 | after an attach, so this is the main thread. Update the | |
1890 | ptid in the thread list. */ | |
dc146f7c | 1891 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1892 | return; |
c0a2216e | 1893 | } |
82f73884 | 1894 | |
29c87f7f PA |
1895 | /* When connecting to a target remote, or to a target |
1896 | extended-remote which already was debugging an inferior, we | |
1897 | may not know about it yet. Add it before adding its child | |
1898 | thread, so notifications are emitted in a sensible order. */ | |
1899 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1900 | { |
1901 | struct remote_state *rs = get_remote_state (); | |
1902 | int fake_pid_p = !remote_multi_process_p (rs); | |
1903 | ||
1904 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1905 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1906 | } |
29c87f7f | 1907 | |
82f73884 | 1908 | /* This is really a new thread. Add it. */ |
0d5b594f | 1909 | remote_add_thread (currthread, running, executing); |
1941c569 PA |
1910 | |
1911 | /* If we found a new inferior, let the common code do whatever | |
1912 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1913 | breakpoints), unless we're just setting up an all-stop |
1914 | connection. */ | |
1941c569 | 1915 | if (inf != NULL) |
b7ea362b PA |
1916 | { |
1917 | struct remote_state *rs = get_remote_state (); | |
1918 | ||
6efcd9a8 | 1919 | if (!rs->starting_up) |
0d5b594f | 1920 | notice_new_inferior (currthread, executing, 0); |
b7ea362b | 1921 | } |
c0a2216e | 1922 | } |
c906108c SS |
1923 | } |
1924 | ||
dc146f7c VP |
1925 | /* Return the private thread data, creating it if necessary. */ |
1926 | ||
70221824 | 1927 | static struct private_thread_info * |
dc146f7c VP |
1928 | demand_private_info (ptid_t ptid) |
1929 | { | |
1930 | struct thread_info *info = find_thread_ptid (ptid); | |
1931 | ||
1932 | gdb_assert (info); | |
1933 | ||
fe978cb0 | 1934 | if (!info->priv) |
dc146f7c | 1935 | { |
8d749320 | 1936 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1937 | info->private_dtor = free_private_thread_info; |
fe978cb0 | 1938 | info->priv->core = -1; |
8020350c DB |
1939 | info->priv->extra = NULL; |
1940 | info->priv->name = NULL; | |
dc146f7c VP |
1941 | } |
1942 | ||
fe978cb0 | 1943 | return info->priv; |
dc146f7c VP |
1944 | } |
1945 | ||
74531fed PA |
1946 | /* Call this function as a result of |
1947 | 1) A halt indication (T packet) containing a thread id | |
1948 | 2) A direct query of currthread | |
0df8b418 | 1949 | 3) Successful execution of set thread */ |
74531fed PA |
1950 | |
1951 | static void | |
47f8a51d | 1952 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1953 | { |
47f8a51d | 1954 | rs->general_thread = currthread; |
74531fed PA |
1955 | } |
1956 | ||
89be2091 DJ |
1957 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1958 | it can simply pass through to the inferior without reporting. */ | |
1959 | ||
1960 | static void | |
94bedb42 TT |
1961 | remote_pass_signals (struct target_ops *self, |
1962 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1963 | { |
4082afcc | 1964 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1965 | { |
1966 | char *pass_packet, *p; | |
89be2091 | 1967 | int count = 0, i; |
747dc59d | 1968 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1969 | |
1970 | gdb_assert (numsigs < 256); | |
1971 | for (i = 0; i < numsigs; i++) | |
1972 | { | |
2455069d | 1973 | if (pass_signals[i]) |
89be2091 DJ |
1974 | count++; |
1975 | } | |
224c3ddb | 1976 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1977 | strcpy (pass_packet, "QPassSignals:"); |
1978 | p = pass_packet + strlen (pass_packet); | |
1979 | for (i = 0; i < numsigs; i++) | |
1980 | { | |
2455069d | 1981 | if (pass_signals[i]) |
89be2091 DJ |
1982 | { |
1983 | if (i >= 16) | |
1984 | *p++ = tohex (i >> 4); | |
1985 | *p++ = tohex (i & 15); | |
1986 | if (count) | |
1987 | *p++ = ';'; | |
1988 | else | |
1989 | break; | |
1990 | count--; | |
1991 | } | |
1992 | } | |
1993 | *p = 0; | |
747dc59d | 1994 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1995 | { |
89be2091 DJ |
1996 | putpkt (pass_packet); |
1997 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1998 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1999 | if (rs->last_pass_packet) |
2000 | xfree (rs->last_pass_packet); | |
2001 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2002 | } |
2003 | else | |
2004 | xfree (pass_packet); | |
2005 | } | |
2006 | } | |
2007 | ||
82075af2 JS |
2008 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2009 | to report syscalls to GDB. */ | |
2010 | ||
2011 | static int | |
2012 | remote_set_syscall_catchpoint (struct target_ops *self, | |
2013 | int pid, int needed, int any_count, | |
2014 | int table_size, int *table) | |
2015 | { | |
2016 | char *catch_packet; | |
2017 | enum packet_result result; | |
2018 | int n_sysno = 0; | |
2019 | ||
2020 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2021 | { | |
2022 | /* Not supported. */ | |
2023 | return 1; | |
2024 | } | |
2025 | ||
2026 | if (needed && !any_count) | |
2027 | { | |
2028 | int i; | |
2029 | ||
2030 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2031 | for (i = 0; i < table_size; i++) | |
2032 | { | |
2033 | if (table[i] != 0) | |
2034 | n_sysno++; | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | if (remote_debug) | |
2039 | { | |
2040 | fprintf_unfiltered (gdb_stdlog, | |
2041 | "remote_set_syscall_catchpoint " | |
2042 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2043 | pid, needed, any_count, n_sysno); | |
2044 | } | |
2045 | ||
2046 | if (needed) | |
2047 | { | |
2048 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2049 | characters for a sysno. If the resulting packet size is too | |
2050 | big, fallback on the non-selective packet. */ | |
2051 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2052 | ||
c0518081 | 2053 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2054 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2055 | if (!any_count) | |
2056 | { | |
2057 | int i; | |
2058 | char *p; | |
2059 | ||
2060 | p = catch_packet; | |
2061 | p += strlen (p); | |
2062 | ||
2063 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2064 | for (i = 0; i < table_size; i++) | |
2065 | { | |
2066 | if (table[i] != 0) | |
2067 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2068 | } | |
2069 | } | |
2070 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2071 | { | |
2072 | /* catch_packet too big. Fallback to less efficient | |
2073 | non selective mode, with GDB doing the filtering. */ | |
2074 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2075 | } | |
2076 | } | |
2077 | else | |
2078 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2079 | ||
2080 | { | |
2081 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2082 | struct remote_state *rs = get_remote_state (); | |
2083 | ||
2084 | putpkt (catch_packet); | |
2085 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2086 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2087 | do_cleanups (old_chain); | |
2088 | if (result == PACKET_OK) | |
2089 | return 0; | |
2090 | else | |
2091 | return -1; | |
2092 | } | |
2093 | } | |
2094 | ||
9b224c5e PA |
2095 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2096 | signals it should pass through to the inferior when detaching. */ | |
2097 | ||
2098 | static void | |
daf5e9b6 TT |
2099 | remote_program_signals (struct target_ops *self, |
2100 | int numsigs, unsigned char *signals) | |
9b224c5e | 2101 | { |
4082afcc | 2102 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2103 | { |
2104 | char *packet, *p; | |
2105 | int count = 0, i; | |
5e4a05c4 | 2106 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2107 | |
2108 | gdb_assert (numsigs < 256); | |
2109 | for (i = 0; i < numsigs; i++) | |
2110 | { | |
2111 | if (signals[i]) | |
2112 | count++; | |
2113 | } | |
224c3ddb | 2114 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2115 | strcpy (packet, "QProgramSignals:"); |
2116 | p = packet + strlen (packet); | |
2117 | for (i = 0; i < numsigs; i++) | |
2118 | { | |
2119 | if (signal_pass_state (i)) | |
2120 | { | |
2121 | if (i >= 16) | |
2122 | *p++ = tohex (i >> 4); | |
2123 | *p++ = tohex (i & 15); | |
2124 | if (count) | |
2125 | *p++ = ';'; | |
2126 | else | |
2127 | break; | |
2128 | count--; | |
2129 | } | |
2130 | } | |
2131 | *p = 0; | |
5e4a05c4 TT |
2132 | if (!rs->last_program_signals_packet |
2133 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2134 | { |
9b224c5e PA |
2135 | putpkt (packet); |
2136 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2137 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2138 | xfree (rs->last_program_signals_packet); |
2139 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2140 | } |
2141 | else | |
2142 | xfree (packet); | |
2143 | } | |
2144 | } | |
2145 | ||
79d7f229 PA |
2146 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2147 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2148 | thread. If GEN is set, set the general thread, if not, then set | |
2149 | the step/continue thread. */ | |
c906108c | 2150 | static void |
79d7f229 | 2151 | set_thread (struct ptid ptid, int gen) |
c906108c | 2152 | { |
d01949b6 | 2153 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2154 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2155 | char *buf = rs->buf; |
79d7f229 | 2156 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2157 | |
79d7f229 | 2158 | if (ptid_equal (state, ptid)) |
c906108c SS |
2159 | return; |
2160 | ||
79d7f229 PA |
2161 | *buf++ = 'H'; |
2162 | *buf++ = gen ? 'g' : 'c'; | |
2163 | if (ptid_equal (ptid, magic_null_ptid)) | |
2164 | xsnprintf (buf, endbuf - buf, "0"); | |
2165 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2166 | xsnprintf (buf, endbuf - buf, "0"); | |
2167 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2168 | xsnprintf (buf, endbuf - buf, "-1"); | |
2169 | else | |
82f73884 | 2170 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2171 | putpkt (rs->buf); |
6d820c5c | 2172 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2173 | if (gen) |
47f8a51d | 2174 | rs->general_thread = ptid; |
c906108c | 2175 | else |
47f8a51d | 2176 | rs->continue_thread = ptid; |
c906108c | 2177 | } |
79d7f229 PA |
2178 | |
2179 | static void | |
2180 | set_general_thread (struct ptid ptid) | |
2181 | { | |
2182 | set_thread (ptid, 1); | |
2183 | } | |
2184 | ||
2185 | static void | |
2186 | set_continue_thread (struct ptid ptid) | |
2187 | { | |
2188 | set_thread (ptid, 0); | |
2189 | } | |
2190 | ||
3c9c4b83 PA |
2191 | /* Change the remote current process. Which thread within the process |
2192 | ends up selected isn't important, as long as it is the same process | |
2193 | as what INFERIOR_PTID points to. | |
2194 | ||
2195 | This comes from that fact that there is no explicit notion of | |
2196 | "selected process" in the protocol. The selected process for | |
2197 | general operations is the process the selected general thread | |
2198 | belongs to. */ | |
2199 | ||
2200 | static void | |
2201 | set_general_process (void) | |
2202 | { | |
2203 | struct remote_state *rs = get_remote_state (); | |
2204 | ||
2205 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2206 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2207 | return; |
2208 | ||
2209 | /* We only need to change the remote current thread if it's pointing | |
2210 | at some other process. */ | |
47f8a51d | 2211 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2212 | set_general_thread (inferior_ptid); |
2213 | } | |
2214 | ||
c906108c | 2215 | \f |
7d1a114c PA |
2216 | /* Return nonzero if this is the main thread that we made up ourselves |
2217 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2218 | |
2219 | static int | |
7d1a114c | 2220 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2221 | { |
c0a2216e PA |
2222 | if (ptid_equal (ptid, magic_null_ptid)) |
2223 | /* The main thread is always alive. */ | |
2224 | return 1; | |
2225 | ||
ba348170 | 2226 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2227 | /* The main thread is always alive. This can happen after a |
2228 | vAttach, if the remote side doesn't support | |
2229 | multi-threading. */ | |
2230 | return 1; | |
2231 | ||
7d1a114c PA |
2232 | return 0; |
2233 | } | |
2234 | ||
2235 | /* Return nonzero if the thread PTID is still alive on the remote | |
2236 | system. */ | |
2237 | ||
2238 | static int | |
2239 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2240 | { | |
2241 | struct remote_state *rs = get_remote_state (); | |
2242 | char *p, *endp; | |
2243 | ||
2244 | /* Check if this is a thread that we made up ourselves to model | |
2245 | non-threaded targets as single-threaded. */ | |
2246 | if (remote_thread_always_alive (ops, ptid)) | |
2247 | return 1; | |
2248 | ||
82f73884 PA |
2249 | p = rs->buf; |
2250 | endp = rs->buf + get_remote_packet_size (); | |
2251 | ||
2252 | *p++ = 'T'; | |
2253 | write_ptid (p, endp, ptid); | |
2254 | ||
2e9f7625 | 2255 | putpkt (rs->buf); |
6d820c5c | 2256 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2257 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2258 | } |
2259 | ||
79efa585 SM |
2260 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2261 | The thread_info object owns the memory for the name. */ | |
2262 | ||
2263 | static const char * | |
2264 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2265 | { | |
2266 | if (info->priv != NULL) | |
2267 | return info->priv->name; | |
2268 | ||
2269 | return NULL; | |
2270 | } | |
2271 | ||
c906108c SS |
2272 | /* About these extended threadlist and threadinfo packets. They are |
2273 | variable length packets but, the fields within them are often fixed | |
2274 | length. They are redundent enough to send over UDP as is the | |
2275 | remote protocol in general. There is a matching unit test module | |
2276 | in libstub. */ | |
2277 | ||
23860348 | 2278 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2279 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2280 | changable. */ |
cce74817 JM |
2281 | |
2282 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2283 | Plan to fix this. */ |
cce74817 | 2284 | |
23860348 | 2285 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2286 | |
9d1f7ab2 | 2287 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2288 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2289 | |
2290 | struct gdb_ext_thread_info | |
c5aa993b | 2291 | { |
23860348 | 2292 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2293 | int active; /* Has state interesting to GDB? |
23860348 | 2294 | regs, stack. */ |
2bc416ba | 2295 | char display[256]; /* Brief state display, name, |
cedea757 | 2296 | blocked/suspended. */ |
23860348 | 2297 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2298 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2299 | whatever. */ |
c5aa993b | 2300 | }; |
cce74817 JM |
2301 | |
2302 | /* The volume of remote transfers can be limited by submitting | |
2303 | a mask containing bits specifying the desired information. | |
2304 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2305 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2306 | |
2307 | #define TAG_THREADID 1 | |
2308 | #define TAG_EXISTS 2 | |
2309 | #define TAG_DISPLAY 4 | |
2310 | #define TAG_THREADNAME 8 | |
c5aa993b | 2311 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2312 | |
23860348 | 2313 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2314 | |
a14ed312 | 2315 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2316 | |
a14ed312 | 2317 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2318 | |
a14ed312 | 2319 | static char *pack_int (char *buf, int value); |
cce74817 | 2320 | |
a14ed312 | 2321 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2322 | |
a14ed312 | 2323 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2324 | |
23860348 | 2325 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2326 | |
23860348 | 2327 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2328 | |
23860348 | 2329 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2330 | |
23860348 | 2331 | static int threadref_to_int (threadref *ref); |
cce74817 | 2332 | |
23860348 | 2333 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2334 | |
23860348 | 2335 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2336 | |
2bc416ba | 2337 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2338 | threadref *id); |
cce74817 | 2339 | |
a14ed312 | 2340 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2341 | threadref *expectedref, |
a14ed312 KB |
2342 | struct gdb_ext_thread_info |
2343 | *info); | |
cce74817 JM |
2344 | |
2345 | ||
2bc416ba | 2346 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2347 | int fieldset, /*TAG mask */ |
a14ed312 | 2348 | struct gdb_ext_thread_info *info); |
cce74817 | 2349 | |
a14ed312 KB |
2350 | static char *pack_threadlist_request (char *pkt, int startflag, |
2351 | int threadcount, | |
23860348 | 2352 | threadref *nextthread); |
cce74817 | 2353 | |
a14ed312 KB |
2354 | static int parse_threadlist_response (char *pkt, |
2355 | int result_limit, | |
23860348 | 2356 | threadref *original_echo, |
2bc416ba | 2357 | threadref *resultlist, |
23860348 | 2358 | int *doneflag); |
cce74817 | 2359 | |
a14ed312 | 2360 | static int remote_get_threadlist (int startflag, |
23860348 | 2361 | threadref *nextthread, |
a14ed312 KB |
2362 | int result_limit, |
2363 | int *done, | |
2bc416ba | 2364 | int *result_count, |
23860348 | 2365 | threadref *threadlist); |
cce74817 | 2366 | |
23860348 | 2367 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2368 | |
a14ed312 KB |
2369 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2370 | void *context, int looplimit); | |
cce74817 | 2371 | |
23860348 | 2372 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2373 | |
82f73884 PA |
2374 | |
2375 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2376 | buffer we're allowed to write to. Returns | |
2377 | BUF+CHARACTERS_WRITTEN. */ | |
2378 | ||
2379 | static char * | |
2380 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2381 | { | |
2382 | int pid, tid; | |
2383 | struct remote_state *rs = get_remote_state (); | |
2384 | ||
2385 | if (remote_multi_process_p (rs)) | |
2386 | { | |
2387 | pid = ptid_get_pid (ptid); | |
2388 | if (pid < 0) | |
2389 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2390 | else | |
2391 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2392 | } | |
ba348170 | 2393 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2394 | if (tid < 0) |
2395 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2396 | else | |
2397 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2398 | ||
2399 | return buf; | |
2400 | } | |
2401 | ||
2402 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2403 | passed the last parsed char. Returns null_ptid on error. */ | |
2404 | ||
2405 | static ptid_t | |
2406 | read_ptid (char *buf, char **obuf) | |
2407 | { | |
2408 | char *p = buf; | |
2409 | char *pp; | |
2410 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2411 | |
2412 | if (*p == 'p') | |
2413 | { | |
2414 | /* Multi-process ptid. */ | |
2415 | pp = unpack_varlen_hex (p + 1, &pid); | |
2416 | if (*pp != '.') | |
b37520b6 | 2417 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2418 | |
2419 | p = pp; | |
2420 | pp = unpack_varlen_hex (p + 1, &tid); | |
2421 | if (obuf) | |
2422 | *obuf = pp; | |
ba348170 | 2423 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2424 | } |
2425 | ||
2426 | /* No multi-process. Just a tid. */ | |
2427 | pp = unpack_varlen_hex (p, &tid); | |
2428 | ||
c9f35b34 KB |
2429 | /* Return null_ptid when no thread id is found. */ |
2430 | if (p == pp) | |
2431 | { | |
2432 | if (obuf) | |
2433 | *obuf = pp; | |
2434 | return null_ptid; | |
2435 | } | |
2436 | ||
82f73884 | 2437 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2438 | what's in inferior_ptid, unless it's null at this point. If so, |
2439 | then since there's no way to know the pid of the reported | |
2440 | threads, use the magic number. */ | |
2441 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2442 | pid = ptid_get_pid (magic_null_ptid); | |
2443 | else | |
2444 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2445 | |
2446 | if (obuf) | |
2447 | *obuf = pp; | |
ba348170 | 2448 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2449 | } |
2450 | ||
c906108c | 2451 | static int |
fba45db2 | 2452 | stubhex (int ch) |
c906108c SS |
2453 | { |
2454 | if (ch >= 'a' && ch <= 'f') | |
2455 | return ch - 'a' + 10; | |
2456 | if (ch >= '0' && ch <= '9') | |
2457 | return ch - '0'; | |
2458 | if (ch >= 'A' && ch <= 'F') | |
2459 | return ch - 'A' + 10; | |
2460 | return -1; | |
2461 | } | |
2462 | ||
2463 | static int | |
fba45db2 | 2464 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2465 | { |
2466 | int nibble; | |
2467 | int retval = 0; | |
2468 | ||
2469 | while (fieldlength) | |
2470 | { | |
2471 | nibble = stubhex (*buff++); | |
2472 | retval |= nibble; | |
2473 | fieldlength--; | |
2474 | if (fieldlength) | |
2475 | retval = retval << 4; | |
2476 | } | |
2477 | return retval; | |
2478 | } | |
2479 | ||
c906108c | 2480 | static char * |
fba45db2 | 2481 | unpack_nibble (char *buf, int *val) |
c906108c | 2482 | { |
b7589f7d | 2483 | *val = fromhex (*buf++); |
c906108c SS |
2484 | return buf; |
2485 | } | |
2486 | ||
c906108c | 2487 | static char * |
fba45db2 | 2488 | unpack_byte (char *buf, int *value) |
c906108c SS |
2489 | { |
2490 | *value = stub_unpack_int (buf, 2); | |
2491 | return buf + 2; | |
2492 | } | |
2493 | ||
2494 | static char * | |
fba45db2 | 2495 | pack_int (char *buf, int value) |
c906108c SS |
2496 | { |
2497 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2498 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2499 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2500 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2501 | return buf; | |
2502 | } | |
2503 | ||
2504 | static char * | |
fba45db2 | 2505 | unpack_int (char *buf, int *value) |
c906108c SS |
2506 | { |
2507 | *value = stub_unpack_int (buf, 8); | |
2508 | return buf + 8; | |
2509 | } | |
2510 | ||
23860348 | 2511 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2512 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2513 | |
2514 | static char * | |
fba45db2 | 2515 | pack_string (char *pkt, char *string) |
c906108c SS |
2516 | { |
2517 | char ch; | |
2518 | int len; | |
2519 | ||
2520 | len = strlen (string); | |
2521 | if (len > 200) | |
23860348 | 2522 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2523 | pkt = pack_hex_byte (pkt, len); |
2524 | while (len-- > 0) | |
2525 | { | |
2526 | ch = *string++; | |
2527 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2528 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2529 | *pkt++ = ch; |
2530 | } | |
2531 | return pkt; | |
2532 | } | |
2533 | #endif /* 0 (unused) */ | |
2534 | ||
2535 | static char * | |
fba45db2 | 2536 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2537 | { |
2538 | while (length--) | |
2539 | *dest++ = *src++; | |
2540 | *dest = '\0'; | |
2541 | return src; | |
2542 | } | |
2543 | ||
2544 | static char * | |
fba45db2 | 2545 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2546 | { |
2547 | char *limit; | |
2548 | unsigned char *altid; | |
2549 | ||
2550 | altid = (unsigned char *) id; | |
2551 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2552 | while (pkt < limit) | |
2553 | pkt = pack_hex_byte (pkt, *altid++); | |
2554 | return pkt; | |
2555 | } | |
2556 | ||
2557 | ||
2558 | static char * | |
fba45db2 | 2559 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2560 | { |
2561 | char *altref; | |
2562 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2563 | int x, y; | |
2564 | ||
2565 | altref = (char *) id; | |
2566 | ||
2567 | while (inbuf < limit) | |
2568 | { | |
2569 | x = stubhex (*inbuf++); | |
2570 | y = stubhex (*inbuf++); | |
2571 | *altref++ = (x << 4) | y; | |
2572 | } | |
2573 | return inbuf; | |
2574 | } | |
2575 | ||
2576 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2577 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2578 | to use 64bit thread references internally. This is an adapter |
2579 | function. */ | |
2580 | ||
2581 | void | |
fba45db2 | 2582 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2583 | { |
2584 | unsigned char *scan; | |
2585 | ||
2586 | scan = (unsigned char *) id; | |
2587 | { | |
2588 | int i = 4; | |
2589 | while (i--) | |
2590 | *scan++ = 0; | |
2591 | } | |
2592 | *scan++ = (value >> 24) & 0xff; | |
2593 | *scan++ = (value >> 16) & 0xff; | |
2594 | *scan++ = (value >> 8) & 0xff; | |
2595 | *scan++ = (value & 0xff); | |
2596 | } | |
2597 | ||
2598 | static int | |
fba45db2 | 2599 | threadref_to_int (threadref *ref) |
c906108c SS |
2600 | { |
2601 | int i, value = 0; | |
2602 | unsigned char *scan; | |
2603 | ||
cfd77fa1 | 2604 | scan = *ref; |
c906108c SS |
2605 | scan += 4; |
2606 | i = 4; | |
2607 | while (i-- > 0) | |
2608 | value = (value << 8) | ((*scan++) & 0xff); | |
2609 | return value; | |
2610 | } | |
2611 | ||
2612 | static void | |
fba45db2 | 2613 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2614 | { |
2615 | int i; | |
2616 | unsigned char *csrc, *cdest; | |
2617 | ||
2618 | csrc = (unsigned char *) src; | |
2619 | cdest = (unsigned char *) dest; | |
2620 | i = 8; | |
2621 | while (i--) | |
2622 | *cdest++ = *csrc++; | |
2623 | } | |
2624 | ||
2625 | static int | |
fba45db2 | 2626 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2627 | { |
23860348 | 2628 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2629 | #if 0 |
2630 | unsigned char *srcp, *destp; | |
2631 | int i, result; | |
2632 | srcp = (char *) src; | |
2633 | destp = (char *) dest; | |
2634 | ||
2635 | result = 1; | |
2636 | while (i-- > 0) | |
2637 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2638 | return result; | |
2639 | #endif | |
2640 | return 1; | |
2641 | } | |
2642 | ||
2643 | /* | |
c5aa993b JM |
2644 | threadid:1, # always request threadid |
2645 | context_exists:2, | |
2646 | display:4, | |
2647 | unique_name:8, | |
2648 | more_display:16 | |
2649 | */ | |
c906108c SS |
2650 | |
2651 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2652 | ||
2653 | static char * | |
fba45db2 | 2654 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2655 | { |
23860348 MS |
2656 | *pkt++ = 'q'; /* Info Query */ |
2657 | *pkt++ = 'P'; /* process or thread info */ | |
2658 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2659 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2660 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2661 | return pkt; |
2662 | } | |
2663 | ||
23860348 | 2664 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2665 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2666 | add more fields as time goes by. */ |
c906108c | 2667 | |
23860348 | 2668 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2669 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2670 | fetch registers and its stack? */ |
c5aa993b | 2671 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2672 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2673 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2674 | the process. */ |
c906108c SS |
2675 | |
2676 | static int | |
fba45db2 KB |
2677 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2678 | struct gdb_ext_thread_info *info) | |
c906108c | 2679 | { |
d01949b6 | 2680 | struct remote_state *rs = get_remote_state (); |
c906108c | 2681 | int mask, length; |
cfd77fa1 | 2682 | int tag; |
c906108c | 2683 | threadref ref; |
6d820c5c | 2684 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2685 | int retval = 1; |
2686 | ||
23860348 | 2687 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2688 | info->active = 0; |
2689 | info->display[0] = '\0'; | |
2690 | info->shortname[0] = '\0'; | |
2691 | info->more_display[0] = '\0'; | |
2692 | ||
23860348 MS |
2693 | /* Assume the characters indicating the packet type have been |
2694 | stripped. */ | |
c906108c SS |
2695 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2696 | pkt = unpack_threadid (pkt, &ref); | |
2697 | ||
2698 | if (mask == 0) | |
8a3fe4f8 | 2699 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2700 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2701 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2702 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2703 | return 0; |
2704 | } | |
2705 | copy_threadref (&info->threadid, &ref); | |
2706 | ||
23860348 | 2707 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2708 | |
23860348 MS |
2709 | /* Packets are terminated with nulls. */ |
2710 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2711 | { |
2712 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2713 | pkt = unpack_byte (pkt, &length); /* length */ |
2714 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2715 | { |
8a3fe4f8 | 2716 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2717 | retval = 0; |
2718 | break; | |
2719 | } | |
2720 | if (tag == TAG_THREADID) | |
2721 | { | |
2722 | if (length != 16) | |
2723 | { | |
8a3fe4f8 | 2724 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2725 | retval = 0; |
2726 | break; | |
2727 | } | |
2728 | pkt = unpack_threadid (pkt, &ref); | |
2729 | mask = mask & ~TAG_THREADID; | |
2730 | continue; | |
2731 | } | |
2732 | if (tag == TAG_EXISTS) | |
2733 | { | |
2734 | info->active = stub_unpack_int (pkt, length); | |
2735 | pkt += length; | |
2736 | mask = mask & ~(TAG_EXISTS); | |
2737 | if (length > 8) | |
2738 | { | |
8a3fe4f8 | 2739 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2740 | retval = 0; |
2741 | break; | |
2742 | } | |
2743 | continue; | |
2744 | } | |
2745 | if (tag == TAG_THREADNAME) | |
2746 | { | |
2747 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2748 | mask = mask & ~TAG_THREADNAME; | |
2749 | continue; | |
2750 | } | |
2751 | if (tag == TAG_DISPLAY) | |
2752 | { | |
2753 | pkt = unpack_string (pkt, &info->display[0], length); | |
2754 | mask = mask & ~TAG_DISPLAY; | |
2755 | continue; | |
2756 | } | |
2757 | if (tag == TAG_MOREDISPLAY) | |
2758 | { | |
2759 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2760 | mask = mask & ~TAG_MOREDISPLAY; | |
2761 | continue; | |
2762 | } | |
8a3fe4f8 | 2763 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2764 | break; /* Not a tag we know about. */ |
c906108c SS |
2765 | } |
2766 | return retval; | |
2767 | } | |
2768 | ||
2769 | static int | |
fba45db2 KB |
2770 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2771 | struct gdb_ext_thread_info *info) | |
c906108c | 2772 | { |
d01949b6 | 2773 | struct remote_state *rs = get_remote_state (); |
c906108c | 2774 | int result; |
c906108c | 2775 | |
2e9f7625 DJ |
2776 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2777 | putpkt (rs->buf); | |
6d820c5c | 2778 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2779 | |
2780 | if (rs->buf[0] == '\0') | |
2781 | return 0; | |
2782 | ||
2e9f7625 | 2783 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2784 | threadid, info); |
c906108c SS |
2785 | return result; |
2786 | } | |
2787 | ||
c906108c SS |
2788 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2789 | ||
2790 | static char * | |
fba45db2 KB |
2791 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2792 | threadref *nextthread) | |
c906108c SS |
2793 | { |
2794 | *pkt++ = 'q'; /* info query packet */ | |
2795 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2796 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2797 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2798 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2799 | *pkt = '\0'; | |
2800 | return pkt; | |
2801 | } | |
2802 | ||
2803 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2804 | ||
2805 | static int | |
fba45db2 KB |
2806 | parse_threadlist_response (char *pkt, int result_limit, |
2807 | threadref *original_echo, threadref *resultlist, | |
2808 | int *doneflag) | |
c906108c | 2809 | { |
d01949b6 | 2810 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2811 | char *limit; |
2812 | int count, resultcount, done; | |
2813 | ||
2814 | resultcount = 0; | |
2815 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2816 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2817 | /* done parse past here */ |
c906108c SS |
2818 | pkt = unpack_byte (pkt, &count); /* count field */ |
2819 | pkt = unpack_nibble (pkt, &done); | |
2820 | /* The first threadid is the argument threadid. */ | |
2821 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2822 | while ((count-- > 0) && (pkt < limit)) | |
2823 | { | |
2824 | pkt = unpack_threadid (pkt, resultlist++); | |
2825 | if (resultcount++ >= result_limit) | |
2826 | break; | |
2827 | } | |
2828 | if (doneflag) | |
2829 | *doneflag = done; | |
2830 | return resultcount; | |
2831 | } | |
2832 | ||
6dc54d91 PA |
2833 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2834 | qL packet is not supported, 0 on error and 1 on success. */ | |
2835 | ||
c906108c | 2836 | static int |
fba45db2 KB |
2837 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2838 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2839 | { |
d01949b6 | 2840 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2841 | int result = 1; |
2842 | ||
23860348 | 2843 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2844 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2845 | >= get_remote_packet_size ()) | |
ea9c271d | 2846 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2847 | |
6d820c5c DJ |
2848 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2849 | putpkt (rs->buf); | |
2850 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2851 | if (*rs->buf == '\0') |
6dc54d91 PA |
2852 | { |
2853 | /* Packet not supported. */ | |
2854 | return -1; | |
2855 | } | |
2856 | ||
2857 | *result_count = | |
2858 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2859 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2860 | |
0d031856 | 2861 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2862 | { |
23860348 MS |
2863 | /* FIXME: This is a good reason to drop the packet. */ |
2864 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2865 | /* Possabilities : |
2866 | retransmit immediatly - race conditions | |
2867 | retransmit after timeout - yes | |
2868 | exit | |
2869 | wait for packet, then exit | |
2870 | */ | |
8a3fe4f8 | 2871 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2872 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2873 | } |
2874 | if (*result_count <= 0) | |
2875 | { | |
2876 | if (*done != 1) | |
2877 | { | |
8a3fe4f8 | 2878 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2879 | result = 0; |
2880 | } | |
2881 | return result; /* break; */ | |
2882 | } | |
2883 | if (*result_count > result_limit) | |
2884 | { | |
2885 | *result_count = 0; | |
8a3fe4f8 | 2886 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2887 | return 0; |
2888 | } | |
2889 | return result; | |
2890 | } | |
2891 | ||
6dc54d91 PA |
2892 | /* Fetch the list of remote threads, with the qL packet, and call |
2893 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2894 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2895 | STEPFUNCTION returns false. If the packet is not supported, | |
2896 | returns -1. */ | |
c906108c | 2897 | |
c906108c | 2898 | static int |
fba45db2 KB |
2899 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2900 | int looplimit) | |
c906108c | 2901 | { |
0d031856 | 2902 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2903 | int done, i, result_count; |
2904 | int startflag = 1; | |
2905 | int result = 1; | |
2906 | int loopcount = 0; | |
c906108c SS |
2907 | |
2908 | done = 0; | |
2909 | while (!done) | |
2910 | { | |
2911 | if (loopcount++ > looplimit) | |
2912 | { | |
2913 | result = 0; | |
8a3fe4f8 | 2914 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2915 | break; |
2916 | } | |
6dc54d91 PA |
2917 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2918 | MAXTHREADLISTRESULTS, | |
2919 | &done, &result_count, | |
2920 | rs->resultthreadlist); | |
2921 | if (result <= 0) | |
2922 | break; | |
23860348 | 2923 | /* Clear for later iterations. */ |
c906108c SS |
2924 | startflag = 0; |
2925 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2926 | if (result_count >= 1) | |
0d031856 TT |
2927 | copy_threadref (&rs->nextthread, |
2928 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2929 | i = 0; |
2930 | while (result_count--) | |
6dc54d91 PA |
2931 | { |
2932 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2933 | { | |
2934 | result = 0; | |
2935 | break; | |
2936 | } | |
2937 | } | |
c906108c SS |
2938 | } |
2939 | return result; | |
2940 | } | |
2941 | ||
6dc54d91 PA |
2942 | /* A thread found on the remote target. */ |
2943 | ||
2944 | typedef struct thread_item | |
2945 | { | |
2946 | /* The thread's PTID. */ | |
2947 | ptid_t ptid; | |
2948 | ||
2949 | /* The thread's extra info. May be NULL. */ | |
2950 | char *extra; | |
2951 | ||
79efa585 SM |
2952 | /* The thread's name. May be NULL. */ |
2953 | char *name; | |
2954 | ||
6dc54d91 PA |
2955 | /* The core the thread was running on. -1 if not known. */ |
2956 | int core; | |
2957 | } thread_item_t; | |
2958 | DEF_VEC_O(thread_item_t); | |
2959 | ||
2960 | /* Context passed around to the various methods listing remote | |
2961 | threads. As new threads are found, they're added to the ITEMS | |
2962 | vector. */ | |
2963 | ||
2964 | struct threads_listing_context | |
2965 | { | |
2966 | /* The threads found on the remote target. */ | |
2967 | VEC (thread_item_t) *items; | |
2968 | }; | |
2969 | ||
80134cf5 PA |
2970 | /* Discard the contents of the constructed thread listing context. */ |
2971 | ||
2972 | static void | |
2973 | clear_threads_listing_context (void *p) | |
2974 | { | |
19ba03f4 SM |
2975 | struct threads_listing_context *context |
2976 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
2977 | int i; |
2978 | struct thread_item *item; | |
2979 | ||
2980 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
2981 | { |
2982 | xfree (item->extra); | |
2983 | xfree (item->name); | |
2984 | } | |
80134cf5 PA |
2985 | |
2986 | VEC_free (thread_item_t, context->items); | |
2987 | } | |
2988 | ||
cbb8991c DB |
2989 | /* Remove the thread specified as the related_pid field of WS |
2990 | from the CONTEXT list. */ | |
2991 | ||
2992 | static void | |
2993 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2994 | struct threads_listing_context *context) | |
2995 | { | |
2996 | struct thread_item *item; | |
2997 | int i; | |
2998 | ptid_t child_ptid = ws->value.related_pid; | |
2999 | ||
3000 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
3001 | { | |
3002 | if (ptid_equal (item->ptid, child_ptid)) | |
3003 | { | |
3004 | VEC_ordered_remove (thread_item_t, context->items, i); | |
3005 | break; | |
3006 | } | |
3007 | } | |
3008 | } | |
3009 | ||
c906108c | 3010 | static int |
6dc54d91 | 3011 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3012 | { |
19ba03f4 SM |
3013 | struct threads_listing_context *context |
3014 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3015 | struct thread_item item; |
79d7f229 | 3016 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3017 | |
6dc54d91 PA |
3018 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3019 | item.core = -1; | |
2e3b657e | 3020 | item.name = NULL; |
6dc54d91 PA |
3021 | item.extra = NULL; |
3022 | ||
3023 | VEC_safe_push (thread_item_t, context->items, &item); | |
3024 | ||
c906108c SS |
3025 | return 1; /* continue iterator */ |
3026 | } | |
3027 | ||
3028 | #define CRAZY_MAX_THREADS 1000 | |
3029 | ||
39f77062 KB |
3030 | static ptid_t |
3031 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3032 | { |
d01949b6 | 3033 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3034 | |
3035 | putpkt ("qC"); | |
6d820c5c | 3036 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3037 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3038 | { |
3039 | char *obuf; | |
3040 | ptid_t result; | |
3041 | ||
3042 | result = read_ptid (&rs->buf[2], &obuf); | |
3043 | if (*obuf != '\0' && remote_debug) | |
3044 | fprintf_unfiltered (gdb_stdlog, | |
3045 | "warning: garbage in qC reply\n"); | |
3046 | ||
3047 | return result; | |
3048 | } | |
c906108c SS |
3049 | else |
3050 | return oldpid; | |
3051 | } | |
3052 | ||
6dc54d91 | 3053 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3054 | |
6dc54d91 PA |
3055 | static int |
3056 | remote_get_threads_with_ql (struct target_ops *ops, | |
3057 | struct threads_listing_context *context) | |
c906108c | 3058 | { |
6dc54d91 PA |
3059 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3060 | CRAZY_MAX_THREADS) >= 0) | |
3061 | return 1; | |
3062 | ||
3063 | return 0; | |
c906108c SS |
3064 | } |
3065 | ||
dc146f7c VP |
3066 | #if defined(HAVE_LIBEXPAT) |
3067 | ||
dc146f7c VP |
3068 | static void |
3069 | start_thread (struct gdb_xml_parser *parser, | |
3070 | const struct gdb_xml_element *element, | |
3071 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3072 | { | |
19ba03f4 SM |
3073 | struct threads_listing_context *data |
3074 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3075 | |
3076 | struct thread_item item; | |
3077 | char *id; | |
3d2c1d41 | 3078 | struct gdb_xml_value *attr; |
dc146f7c | 3079 | |
19ba03f4 | 3080 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3081 | item.ptid = read_ptid (id, NULL); |
3082 | ||
3d2c1d41 PA |
3083 | attr = xml_find_attribute (attributes, "core"); |
3084 | if (attr != NULL) | |
3085 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3086 | else |
3087 | item.core = -1; | |
3088 | ||
79efa585 | 3089 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3090 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3091 | |
dc146f7c VP |
3092 | item.extra = 0; |
3093 | ||
3094 | VEC_safe_push (thread_item_t, data->items, &item); | |
3095 | } | |
3096 | ||
3097 | static void | |
3098 | end_thread (struct gdb_xml_parser *parser, | |
3099 | const struct gdb_xml_element *element, | |
3100 | void *user_data, const char *body_text) | |
3101 | { | |
19ba03f4 SM |
3102 | struct threads_listing_context *data |
3103 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3104 | |
3105 | if (body_text && *body_text) | |
2ae2a0b7 | 3106 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3107 | } |
3108 | ||
3109 | const struct gdb_xml_attribute thread_attributes[] = { | |
3110 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3111 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3112 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3113 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3114 | }; | |
3115 | ||
3116 | const struct gdb_xml_element thread_children[] = { | |
3117 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3118 | }; | |
3119 | ||
3120 | const struct gdb_xml_element threads_children[] = { | |
3121 | { "thread", thread_attributes, thread_children, | |
3122 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3123 | start_thread, end_thread }, | |
3124 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3125 | }; | |
3126 | ||
3127 | const struct gdb_xml_element threads_elements[] = { | |
3128 | { "threads", NULL, threads_children, | |
3129 | GDB_XML_EF_NONE, NULL, NULL }, | |
3130 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3131 | }; | |
3132 | ||
3133 | #endif | |
3134 | ||
6dc54d91 | 3135 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3136 | |
6dc54d91 PA |
3137 | static int |
3138 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3139 | struct threads_listing_context *context) | |
0f71a2f6 | 3140 | { |
dc146f7c | 3141 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3142 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3143 | { |
6dc54d91 | 3144 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3145 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3146 | |
6dc54d91 | 3147 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3148 | { |
6dc54d91 PA |
3149 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3150 | threads_elements, xml, context); | |
dc146f7c VP |
3151 | } |
3152 | ||
3153 | do_cleanups (back_to); | |
6dc54d91 | 3154 | return 1; |
dc146f7c VP |
3155 | } |
3156 | #endif | |
3157 | ||
6dc54d91 PA |
3158 | return 0; |
3159 | } | |
3160 | ||
3161 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3162 | ||
3163 | static int | |
3164 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3165 | struct threads_listing_context *context) | |
3166 | { | |
3167 | struct remote_state *rs = get_remote_state (); | |
3168 | ||
b80fafe3 | 3169 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3170 | { |
6dc54d91 PA |
3171 | char *bufp; |
3172 | ||
9d1f7ab2 | 3173 | putpkt ("qfThreadInfo"); |
6d820c5c | 3174 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3175 | bufp = rs->buf; |
9d1f7ab2 | 3176 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3177 | { |
9d1f7ab2 MS |
3178 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3179 | { | |
3180 | do | |
3181 | { | |
6dc54d91 PA |
3182 | struct thread_item item; |
3183 | ||
3184 | item.ptid = read_ptid (bufp, &bufp); | |
3185 | item.core = -1; | |
2e3b657e | 3186 | item.name = NULL; |
6dc54d91 PA |
3187 | item.extra = NULL; |
3188 | ||
3189 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3190 | } |
3191 | while (*bufp++ == ','); /* comma-separated list */ | |
3192 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3193 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3194 | bufp = rs->buf; |
9d1f7ab2 | 3195 | } |
6dc54d91 PA |
3196 | return 1; |
3197 | } | |
3198 | else | |
3199 | { | |
3200 | /* Packet not recognized. */ | |
3201 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3202 | } |
3203 | } | |
3204 | ||
6dc54d91 PA |
3205 | return 0; |
3206 | } | |
3207 | ||
e8032dde | 3208 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3209 | targets. */ |
3210 | ||
3211 | static void | |
e8032dde | 3212 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 | 3213 | { |
6dc54d91 PA |
3214 | struct threads_listing_context context; |
3215 | struct cleanup *old_chain; | |
ab970af1 | 3216 | int got_list = 0; |
e8032dde | 3217 | |
6dc54d91 PA |
3218 | context.items = NULL; |
3219 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3220 | ||
3221 | /* We have a few different mechanisms to fetch the thread list. Try | |
3222 | them all, starting with the most preferred one first, falling | |
3223 | back to older methods. */ | |
3224 | if (remote_get_threads_with_qxfer (ops, &context) | |
3225 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3226 | || remote_get_threads_with_ql (ops, &context)) | |
3227 | { | |
3228 | int i; | |
3229 | struct thread_item *item; | |
ab970af1 PA |
3230 | struct thread_info *tp, *tmp; |
3231 | ||
3232 | got_list = 1; | |
3233 | ||
7d1a114c PA |
3234 | if (VEC_empty (thread_item_t, context.items) |
3235 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3236 | { | |
3237 | /* Some targets don't really support threads, but still | |
3238 | reply an (empty) thread list in response to the thread | |
3239 | listing packets, instead of replying "packet not | |
3240 | supported". Exit early so we don't delete the main | |
3241 | thread. */ | |
3242 | do_cleanups (old_chain); | |
3243 | return; | |
3244 | } | |
3245 | ||
ab970af1 PA |
3246 | /* CONTEXT now holds the current thread list on the remote |
3247 | target end. Delete GDB-side threads no longer found on the | |
3248 | target. */ | |
8a06aea7 | 3249 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3250 | { |
ab970af1 PA |
3251 | for (i = 0; |
3252 | VEC_iterate (thread_item_t, context.items, i, item); | |
3253 | ++i) | |
3254 | { | |
3255 | if (ptid_equal (item->ptid, tp->ptid)) | |
3256 | break; | |
3257 | } | |
3258 | ||
3259 | if (i == VEC_length (thread_item_t, context.items)) | |
3260 | { | |
3261 | /* Not found. */ | |
3262 | delete_thread (tp->ptid); | |
3263 | } | |
cbb8991c DB |
3264 | } |
3265 | ||
3266 | /* Remove any unreported fork child threads from CONTEXT so | |
3267 | that we don't interfere with follow fork, which is where | |
3268 | creation of such threads is handled. */ | |
3269 | remove_new_fork_children (&context); | |
74531fed | 3270 | |
ab970af1 | 3271 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3272 | for (i = 0; |
3273 | VEC_iterate (thread_item_t, context.items, i, item); | |
3274 | ++i) | |
3275 | { | |
3276 | if (!ptid_equal (item->ptid, null_ptid)) | |
3277 | { | |
3278 | struct private_thread_info *info; | |
3279 | /* In non-stop mode, we assume new found threads are | |
0d5b594f PA |
3280 | executing until proven otherwise with a stop reply. |
3281 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3282 | stopped. */ |
0d5b594f | 3283 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3284 | |
0d5b594f | 3285 | remote_notice_new_inferior (item->ptid, executing); |
6dc54d91 PA |
3286 | |
3287 | info = demand_private_info (item->ptid); | |
3288 | info->core = item->core; | |
3289 | info->extra = item->extra; | |
3290 | item->extra = NULL; | |
79efa585 SM |
3291 | info->name = item->name; |
3292 | item->name = NULL; | |
6dc54d91 PA |
3293 | } |
3294 | } | |
3295 | } | |
3296 | ||
ab970af1 PA |
3297 | if (!got_list) |
3298 | { | |
3299 | /* If no thread listing method is supported, then query whether | |
3300 | each known thread is alive, one by one, with the T packet. | |
3301 | If the target doesn't support threads at all, then this is a | |
3302 | no-op. See remote_thread_alive. */ | |
3303 | prune_threads (); | |
3304 | } | |
3305 | ||
6dc54d91 | 3306 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3307 | } |
3308 | ||
802188a7 | 3309 | /* |
9d1f7ab2 MS |
3310 | * Collect a descriptive string about the given thread. |
3311 | * The target may say anything it wants to about the thread | |
3312 | * (typically info about its blocked / runnable state, name, etc.). | |
3313 | * This string will appear in the info threads display. | |
802188a7 | 3314 | * |
9d1f7ab2 MS |
3315 | * Optional: targets are not required to implement this function. |
3316 | */ | |
3317 | ||
3318 | static char * | |
c15906d8 | 3319 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3320 | { |
d01949b6 | 3321 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3322 | int result; |
3323 | int set; | |
3324 | threadref id; | |
3325 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3326 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3327 | int n = 0; /* position in display_buf */ |
3328 | ||
5d93a237 | 3329 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3330 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3331 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3332 | |
60e569b9 | 3333 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3334 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3335 | /* This is the main thread which was added by GDB. The remote |
3336 | server doesn't know about it. */ | |
3337 | return NULL; | |
3338 | ||
4082afcc | 3339 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3340 | { |
3341 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3342 | |
fe978cb0 PA |
3343 | if (info && info->priv) |
3344 | return info->priv->extra; | |
dc146f7c VP |
3345 | else |
3346 | return NULL; | |
3347 | } | |
3348 | ||
b80fafe3 | 3349 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3350 | { |
82f73884 PA |
3351 | char *b = rs->buf; |
3352 | char *endb = rs->buf + get_remote_packet_size (); | |
3353 | ||
3354 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3355 | b += strlen (b); | |
3356 | write_ptid (b, endb, tp->ptid); | |
3357 | ||
2e9f7625 | 3358 | putpkt (rs->buf); |
6d820c5c | 3359 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3360 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3361 | { |
2e9f7625 DJ |
3362 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3363 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3364 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3365 | return display_buf; |
3366 | } | |
0f71a2f6 | 3367 | } |
9d1f7ab2 MS |
3368 | |
3369 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3370 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3371 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3372 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3373 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3374 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3375 | if (threadinfo.active) | |
0f71a2f6 | 3376 | { |
9d1f7ab2 | 3377 | if (*threadinfo.shortname) |
2bc416ba | 3378 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3379 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3380 | if (*threadinfo.display) |
2bc416ba | 3381 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3382 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3383 | if (*threadinfo.more_display) |
2bc416ba | 3384 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3385 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3386 | |
3387 | if (n > 0) | |
c5aa993b | 3388 | { |
23860348 | 3389 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3390 | if (',' == display_buf[n-1]) |
3391 | display_buf[n-1] = ' '; | |
3392 | return display_buf; | |
c5aa993b | 3393 | } |
0f71a2f6 | 3394 | } |
9d1f7ab2 | 3395 | return NULL; |
0f71a2f6 | 3396 | } |
c906108c | 3397 | \f |
c5aa993b | 3398 | |
0fb4aa4b | 3399 | static int |
61fc905d | 3400 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3401 | struct static_tracepoint_marker *marker) |
3402 | { | |
3403 | struct remote_state *rs = get_remote_state (); | |
3404 | char *p = rs->buf; | |
3405 | ||
bba74b36 | 3406 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3407 | p += strlen (p); |
3408 | p += hexnumstr (p, addr); | |
3409 | putpkt (rs->buf); | |
3410 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3411 | p = rs->buf; | |
3412 | ||
3413 | if (*p == 'E') | |
3414 | error (_("Remote failure reply: %s"), p); | |
3415 | ||
3416 | if (*p++ == 'm') | |
3417 | { | |
3418 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3419 | return 1; | |
3420 | } | |
3421 | ||
3422 | return 0; | |
3423 | } | |
3424 | ||
0fb4aa4b | 3425 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3426 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3427 | const char *strid) | |
0fb4aa4b PA |
3428 | { |
3429 | struct remote_state *rs = get_remote_state (); | |
3430 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3431 | struct static_tracepoint_marker *marker = NULL; | |
3432 | struct cleanup *old_chain; | |
3433 | char *p; | |
3434 | ||
3435 | /* Ask for a first packet of static tracepoint marker | |
3436 | definition. */ | |
3437 | putpkt ("qTfSTM"); | |
3438 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3439 | p = rs->buf; | |
3440 | if (*p == 'E') | |
3441 | error (_("Remote failure reply: %s"), p); | |
3442 | ||
3443 | old_chain = make_cleanup (free_current_marker, &marker); | |
3444 | ||
3445 | while (*p++ == 'm') | |
3446 | { | |
3447 | if (marker == NULL) | |
3448 | marker = XCNEW (struct static_tracepoint_marker); | |
3449 | ||
3450 | do | |
3451 | { | |
3452 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3453 | ||
3454 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3455 | { | |
3456 | VEC_safe_push (static_tracepoint_marker_p, | |
3457 | markers, marker); | |
3458 | marker = NULL; | |
3459 | } | |
3460 | else | |
3461 | { | |
3462 | release_static_tracepoint_marker (marker); | |
3463 | memset (marker, 0, sizeof (*marker)); | |
3464 | } | |
3465 | } | |
3466 | while (*p++ == ','); /* comma-separated list */ | |
3467 | /* Ask for another packet of static tracepoint definition. */ | |
3468 | putpkt ("qTsSTM"); | |
3469 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3470 | p = rs->buf; | |
3471 | } | |
3472 | ||
3473 | do_cleanups (old_chain); | |
3474 | return markers; | |
3475 | } | |
3476 | ||
3477 | \f | |
10760264 JB |
3478 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3479 | ||
3480 | static ptid_t | |
1e6b91a4 | 3481 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3482 | { |
ba348170 | 3483 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3484 | } |
3485 | \f | |
3486 | ||
24b06219 | 3487 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3488 | |
3489 | static void | |
fba45db2 | 3490 | extended_remote_restart (void) |
c906108c | 3491 | { |
d01949b6 | 3492 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3493 | |
3494 | /* Send the restart command; for reasons I don't understand the | |
3495 | remote side really expects a number after the "R". */ | |
ea9c271d | 3496 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3497 | putpkt (rs->buf); |
c906108c | 3498 | |
ad9a8f3f | 3499 | remote_fileio_reset (); |
c906108c SS |
3500 | } |
3501 | \f | |
3502 | /* Clean up connection to a remote debugger. */ | |
3503 | ||
c906108c | 3504 | static void |
de90e03d | 3505 | remote_close (struct target_ops *self) |
c906108c | 3506 | { |
5d93a237 TT |
3507 | struct remote_state *rs = get_remote_state (); |
3508 | ||
3509 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3510 | return; /* already closed */ |
3511 | ||
3512 | /* Make sure we leave stdin registered in the event loop, and we | |
3513 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3514 | remote_terminal_ours (self); |
ce5ce7ed | 3515 | |
5d93a237 TT |
3516 | serial_close (rs->remote_desc); |
3517 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3518 | |
3519 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3520 | of all the inferiors and their threads we were controlling. |
3521 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3522 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3523 | inferior_ptid = null_ptid; |
f67fd822 | 3524 | discard_all_inferiors (); |
ce5ce7ed | 3525 | |
f48ff2a7 YQ |
3526 | /* We are closing the remote target, so we should discard |
3527 | everything of this target. */ | |
bcc75809 | 3528 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3529 | |
3530 | if (remote_async_inferior_event_token) | |
3531 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3532 | |
5965e028 | 3533 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3534 | |
3535 | trace_reset_local_state (); | |
c906108c SS |
3536 | } |
3537 | ||
23860348 | 3538 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3539 | |
3540 | static void | |
fba45db2 | 3541 | get_offsets (void) |
c906108c | 3542 | { |
d01949b6 | 3543 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3544 | char *buf; |
085dd6e6 | 3545 | char *ptr; |
31d99776 DJ |
3546 | int lose, num_segments = 0, do_sections, do_segments; |
3547 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3548 | struct section_offsets *offs; |
31d99776 DJ |
3549 | struct symfile_segment_data *data; |
3550 | ||
3551 | if (symfile_objfile == NULL) | |
3552 | return; | |
c906108c SS |
3553 | |
3554 | putpkt ("qOffsets"); | |
6d820c5c | 3555 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3556 | buf = rs->buf; |
c906108c SS |
3557 | |
3558 | if (buf[0] == '\000') | |
3559 | return; /* Return silently. Stub doesn't support | |
23860348 | 3560 | this command. */ |
c906108c SS |
3561 | if (buf[0] == 'E') |
3562 | { | |
8a3fe4f8 | 3563 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3564 | return; |
3565 | } | |
3566 | ||
3567 | /* Pick up each field in turn. This used to be done with scanf, but | |
3568 | scanf will make trouble if CORE_ADDR size doesn't match | |
3569 | conversion directives correctly. The following code will work | |
3570 | with any size of CORE_ADDR. */ | |
3571 | text_addr = data_addr = bss_addr = 0; | |
3572 | ptr = buf; | |
3573 | lose = 0; | |
3574 | ||
61012eef | 3575 | if (startswith (ptr, "Text=")) |
c906108c SS |
3576 | { |
3577 | ptr += 5; | |
3578 | /* Don't use strtol, could lose on big values. */ | |
3579 | while (*ptr && *ptr != ';') | |
3580 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3581 | |
61012eef | 3582 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3583 | { |
3584 | ptr += 6; | |
3585 | while (*ptr && *ptr != ';') | |
3586 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3587 | } | |
3588 | else | |
3589 | lose = 1; | |
3590 | ||
61012eef | 3591 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3592 | { |
3593 | ptr += 5; | |
3594 | while (*ptr && *ptr != ';') | |
3595 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3596 | |
31d99776 DJ |
3597 | if (bss_addr != data_addr) |
3598 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3599 | } | |
3600 | else | |
3601 | lose = 1; | |
3602 | } | |
61012eef | 3603 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3604 | { |
31d99776 DJ |
3605 | ptr += 8; |
3606 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3607 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3608 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3609 | num_segments = 1; | |
3610 | ||
61012eef | 3611 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3612 | { |
3613 | ptr += 9; | |
3614 | while (*ptr && *ptr != ';') | |
3615 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3616 | num_segments++; | |
3617 | } | |
c906108c SS |
3618 | } |
3619 | else | |
3620 | lose = 1; | |
3621 | ||
3622 | if (lose) | |
8a3fe4f8 | 3623 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3624 | else if (*ptr != '\0') |
3625 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3626 | |
802188a7 | 3627 | offs = ((struct section_offsets *) |
a39a16c4 | 3628 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3629 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3630 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3631 | |
31d99776 DJ |
3632 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3633 | do_segments = (data != NULL); | |
3634 | do_sections = num_segments == 0; | |
c906108c | 3635 | |
28c32713 | 3636 | if (num_segments > 0) |
31d99776 | 3637 | { |
31d99776 DJ |
3638 | segments[0] = text_addr; |
3639 | segments[1] = data_addr; | |
3640 | } | |
28c32713 JB |
3641 | /* If we have two segments, we can still try to relocate everything |
3642 | by assuming that the .text and .data offsets apply to the whole | |
3643 | text and data segments. Convert the offsets given in the packet | |
3644 | to base addresses for symfile_map_offsets_to_segments. */ | |
3645 | else if (data && data->num_segments == 2) | |
3646 | { | |
3647 | segments[0] = data->segment_bases[0] + text_addr; | |
3648 | segments[1] = data->segment_bases[1] + data_addr; | |
3649 | num_segments = 2; | |
3650 | } | |
8d385431 DJ |
3651 | /* If the object file has only one segment, assume that it is text |
3652 | rather than data; main programs with no writable data are rare, | |
3653 | but programs with no code are useless. Of course the code might | |
3654 | have ended up in the data segment... to detect that we would need | |
3655 | the permissions here. */ | |
3656 | else if (data && data->num_segments == 1) | |
3657 | { | |
3658 | segments[0] = data->segment_bases[0] + text_addr; | |
3659 | num_segments = 1; | |
3660 | } | |
28c32713 JB |
3661 | /* There's no way to relocate by segment. */ |
3662 | else | |
3663 | do_segments = 0; | |
31d99776 DJ |
3664 | |
3665 | if (do_segments) | |
3666 | { | |
3667 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3668 | offs, num_segments, segments); | |
3669 | ||
3670 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3671 | error (_("Can not handle qOffsets TextSeg " |
3672 | "response with this symbol file")); | |
31d99776 DJ |
3673 | |
3674 | if (ret > 0) | |
3675 | do_sections = 0; | |
3676 | } | |
c906108c | 3677 | |
9ef895d6 DJ |
3678 | if (data) |
3679 | free_symfile_segment_data (data); | |
31d99776 DJ |
3680 | |
3681 | if (do_sections) | |
3682 | { | |
3683 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3684 | ||
3e43a32a MS |
3685 | /* This is a temporary kludge to force data and bss to use the |
3686 | same offsets because that's what nlmconv does now. The real | |
3687 | solution requires changes to the stub and remote.c that I | |
3688 | don't have time to do right now. */ | |
31d99776 DJ |
3689 | |
3690 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3691 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3692 | } | |
c906108c SS |
3693 | |
3694 | objfile_relocate (symfile_objfile, offs); | |
3695 | } | |
3696 | ||
9a7071a8 JB |
3697 | /* Send interrupt_sequence to remote target. */ |
3698 | static void | |
eeae04df | 3699 | send_interrupt_sequence (void) |
9a7071a8 | 3700 | { |
5d93a237 TT |
3701 | struct remote_state *rs = get_remote_state (); |
3702 | ||
9a7071a8 | 3703 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3704 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3705 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3706 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3707 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3708 | { | |
5d93a237 | 3709 | serial_send_break (rs->remote_desc); |
c33e31fd | 3710 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3711 | } |
3712 | else | |
3713 | internal_error (__FILE__, __LINE__, | |
3714 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3715 | interrupt_sequence_mode); | |
3716 | } | |
3717 | ||
3405876a PA |
3718 | |
3719 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3720 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3721 | ||
3722 | static ptid_t | |
3723 | stop_reply_extract_thread (char *stop_reply) | |
3724 | { | |
3725 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3726 | { | |
3727 | char *p; | |
3728 | ||
3729 | /* Txx r:val ; r:val (...) */ | |
3730 | p = &stop_reply[3]; | |
3731 | ||
3732 | /* Look for "register" named "thread". */ | |
3733 | while (*p != '\0') | |
3734 | { | |
3735 | char *p1; | |
3736 | ||
3737 | p1 = strchr (p, ':'); | |
3738 | if (p1 == NULL) | |
3739 | return null_ptid; | |
3740 | ||
3741 | if (strncmp (p, "thread", p1 - p) == 0) | |
3742 | return read_ptid (++p1, &p); | |
3743 | ||
3744 | p1 = strchr (p, ';'); | |
3745 | if (p1 == NULL) | |
3746 | return null_ptid; | |
3747 | p1++; | |
3748 | ||
3749 | p = p1; | |
3750 | } | |
3751 | } | |
3752 | ||
3753 | return null_ptid; | |
3754 | } | |
3755 | ||
b7ea362b PA |
3756 | /* Determine the remote side's current thread. If we have a stop |
3757 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3758 | "thread" register we can extract the current thread from. If not, | |
3759 | ask the remote which is the current thread with qC. The former | |
3760 | method avoids a roundtrip. */ | |
3761 | ||
3762 | static ptid_t | |
3763 | get_current_thread (char *wait_status) | |
3764 | { | |
6a49a997 | 3765 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3766 | |
3767 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3768 | the target architecture, which we haven't yet fully determined at | |
3769 | this point. */ | |
3770 | if (wait_status != NULL) | |
3771 | ptid = stop_reply_extract_thread (wait_status); | |
3772 | if (ptid_equal (ptid, null_ptid)) | |
3773 | ptid = remote_current_thread (inferior_ptid); | |
3774 | ||
3775 | return ptid; | |
3776 | } | |
3777 | ||
49c62f2e PA |
3778 | /* Query the remote target for which is the current thread/process, |
3779 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3780 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3781 | to return the current thread. |
3782 | ||
3783 | This function is called after handling the '?' or 'vRun' packets, | |
3784 | whose response is a stop reply from which we can also try | |
3785 | extracting the thread. If the target doesn't support the explicit | |
3786 | qC query, we infer the current thread from that stop reply, passed | |
3787 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3788 | |
3789 | static void | |
3405876a | 3790 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3791 | { |
3792 | struct remote_state *rs = get_remote_state (); | |
3793 | int fake_pid_p = 0; | |
6a49a997 | 3794 | ptid_t ptid; |
49c62f2e PA |
3795 | |
3796 | inferior_ptid = null_ptid; | |
3797 | ||
b7ea362b PA |
3798 | /* Now, if we have thread information, update inferior_ptid. */ |
3799 | ptid = get_current_thread (wait_status); | |
3405876a | 3800 | |
49c62f2e PA |
3801 | if (!ptid_equal (ptid, null_ptid)) |
3802 | { | |
3803 | if (!remote_multi_process_p (rs)) | |
3804 | fake_pid_p = 1; | |
3805 | ||
3806 | inferior_ptid = ptid; | |
3807 | } | |
3808 | else | |
3809 | { | |
3810 | /* Without this, some commands which require an active target | |
3811 | (such as kill) won't work. This variable serves (at least) | |
3812 | double duty as both the pid of the target process (if it has | |
3813 | such), and as a flag indicating that a target is active. */ | |
3814 | inferior_ptid = magic_null_ptid; | |
3815 | fake_pid_p = 1; | |
3816 | } | |
3817 | ||
1b6e6f5c | 3818 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3819 | |
3820 | /* Add the main thread. */ | |
3821 | add_thread_silent (inferior_ptid); | |
3822 | } | |
3823 | ||
6efcd9a8 PA |
3824 | /* Print info about a thread that was found already stopped on |
3825 | connection. */ | |
3826 | ||
3827 | static void | |
3828 | print_one_stopped_thread (struct thread_info *thread) | |
3829 | { | |
3830 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3831 | ||
3832 | switch_to_thread (thread->ptid); | |
3833 | stop_pc = get_frame_pc (get_current_frame ()); | |
3834 | set_current_sal_from_frame (get_current_frame ()); | |
3835 | ||
3836 | thread->suspend.waitstatus_pending_p = 0; | |
3837 | ||
3838 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3839 | { | |
3840 | enum gdb_signal sig = ws->value.sig; | |
3841 | ||
3842 | if (signal_print_state (sig)) | |
3843 | observer_notify_signal_received (sig); | |
3844 | } | |
3845 | observer_notify_normal_stop (NULL, 1); | |
3846 | } | |
3847 | ||
221e1a37 PA |
3848 | /* Process all initial stop replies the remote side sent in response |
3849 | to the ? packet. These indicate threads that were already stopped | |
3850 | on initial connection. We mark these threads as stopped and print | |
3851 | their current frame before giving the user the prompt. */ | |
3852 | ||
3853 | static void | |
6efcd9a8 | 3854 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3855 | { |
3856 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3857 | struct inferior *inf; |
3858 | struct thread_info *thread; | |
3859 | struct thread_info *selected = NULL; | |
3860 | struct thread_info *lowest_stopped = NULL; | |
3861 | struct thread_info *first = NULL; | |
221e1a37 PA |
3862 | |
3863 | /* Consume the initial pending events. */ | |
3864 | while (pending_stop_replies-- > 0) | |
3865 | { | |
3866 | ptid_t waiton_ptid = minus_one_ptid; | |
3867 | ptid_t event_ptid; | |
3868 | struct target_waitstatus ws; | |
3869 | int ignore_event = 0; | |
6efcd9a8 | 3870 | struct thread_info *thread; |
221e1a37 PA |
3871 | |
3872 | memset (&ws, 0, sizeof (ws)); | |
3873 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3874 | if (remote_debug) | |
3875 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3876 | ||
3877 | switch (ws.kind) | |
3878 | { | |
3879 | case TARGET_WAITKIND_IGNORE: | |
3880 | case TARGET_WAITKIND_NO_RESUMED: | |
3881 | case TARGET_WAITKIND_SIGNALLED: | |
3882 | case TARGET_WAITKIND_EXITED: | |
3883 | /* We shouldn't see these, but if we do, just ignore. */ | |
3884 | if (remote_debug) | |
3885 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3886 | ignore_event = 1; | |
3887 | break; | |
3888 | ||
3889 | case TARGET_WAITKIND_EXECD: | |
3890 | xfree (ws.value.execd_pathname); | |
3891 | break; | |
3892 | default: | |
3893 | break; | |
3894 | } | |
3895 | ||
3896 | if (ignore_event) | |
3897 | continue; | |
3898 | ||
6efcd9a8 | 3899 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3900 | |
3901 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3902 | { | |
3903 | enum gdb_signal sig = ws.value.sig; | |
3904 | ||
3905 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3906 | instead of signal 0. Suppress it. */ | |
3907 | if (sig == GDB_SIGNAL_TRAP) | |
3908 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3909 | thread->suspend.stop_signal = sig; |
3910 | ws.value.sig = sig; | |
3911 | } | |
221e1a37 | 3912 | |
6efcd9a8 PA |
3913 | thread->suspend.waitstatus = ws; |
3914 | ||
3915 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3916 | || ws.value.sig != GDB_SIGNAL_0) | |
3917 | thread->suspend.waitstatus_pending_p = 1; | |
3918 | ||
3919 | set_executing (event_ptid, 0); | |
3920 | set_running (event_ptid, 0); | |
3921 | } | |
3922 | ||
3923 | /* "Notice" the new inferiors before anything related to | |
3924 | registers/memory. */ | |
3925 | ALL_INFERIORS (inf) | |
3926 | { | |
3927 | if (inf->pid == 0) | |
3928 | continue; | |
3929 | ||
3930 | inf->needs_setup = 1; | |
3931 | ||
3932 | if (non_stop) | |
3933 | { | |
3934 | thread = any_live_thread_of_process (inf->pid); | |
3935 | notice_new_inferior (thread->ptid, | |
3936 | thread->state == THREAD_RUNNING, | |
3937 | from_tty); | |
3938 | } | |
3939 | } | |
3940 | ||
3941 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3942 | records the threads' stop pc, so must be done after "noticing" | |
3943 | the inferiors. */ | |
3944 | if (!non_stop) | |
3945 | { | |
3946 | stop_all_threads (); | |
3947 | ||
3948 | /* If all threads of an inferior were already stopped, we | |
3949 | haven't setup the inferior yet. */ | |
3950 | ALL_INFERIORS (inf) | |
3951 | { | |
3952 | if (inf->pid == 0) | |
3953 | continue; | |
221e1a37 | 3954 | |
6efcd9a8 PA |
3955 | if (inf->needs_setup) |
3956 | { | |
3957 | thread = any_live_thread_of_process (inf->pid); | |
3958 | switch_to_thread_no_regs (thread); | |
3959 | setup_inferior (0); | |
3960 | } | |
3961 | } | |
221e1a37 | 3962 | } |
6efcd9a8 PA |
3963 | |
3964 | /* Now go over all threads that are stopped, and print their current | |
3965 | frame. If all-stop, then if there's a signalled thread, pick | |
3966 | that as current. */ | |
3967 | ALL_NON_EXITED_THREADS (thread) | |
3968 | { | |
6efcd9a8 PA |
3969 | if (first == NULL) |
3970 | first = thread; | |
3971 | ||
3972 | if (!non_stop) | |
3973 | set_running (thread->ptid, 0); | |
3974 | else if (thread->state != THREAD_STOPPED) | |
3975 | continue; | |
3976 | ||
6efcd9a8 PA |
3977 | if (selected == NULL |
3978 | && thread->suspend.waitstatus_pending_p) | |
3979 | selected = thread; | |
3980 | ||
5d5658a1 PA |
3981 | if (lowest_stopped == NULL |
3982 | || thread->inf->num < lowest_stopped->inf->num | |
3983 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
3984 | lowest_stopped = thread; |
3985 | ||
3986 | if (non_stop) | |
3987 | print_one_stopped_thread (thread); | |
3988 | } | |
3989 | ||
3990 | /* In all-stop, we only print the status of one thread, and leave | |
3991 | others with their status pending. */ | |
3992 | if (!non_stop) | |
3993 | { | |
3994 | thread = selected; | |
3995 | if (thread == NULL) | |
3996 | thread = lowest_stopped; | |
3997 | if (thread == NULL) | |
3998 | thread = first; | |
3999 | ||
4000 | print_one_stopped_thread (thread); | |
4001 | } | |
4002 | ||
4003 | /* For "info program". */ | |
4004 | thread = inferior_thread (); | |
4005 | if (thread->state == THREAD_STOPPED) | |
4006 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4007 | } |
4008 | ||
9cbc821d | 4009 | static void |
04bd08de | 4010 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4011 | { |
c8d104ad PA |
4012 | struct remote_state *rs = get_remote_state (); |
4013 | struct packet_config *noack_config; | |
2d717e4f | 4014 | char *wait_status = NULL; |
8621d6a9 | 4015 | |
23860348 | 4016 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 4017 | QUIT; |
c906108c | 4018 | |
9a7071a8 JB |
4019 | if (interrupt_on_connect) |
4020 | send_interrupt_sequence (); | |
4021 | ||
57e12211 | 4022 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 4023 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 4024 | |
1e51243a PA |
4025 | /* Signal other parts that we're going through the initial setup, |
4026 | and so things may not be stable yet. */ | |
4027 | rs->starting_up = 1; | |
4028 | ||
c8d104ad PA |
4029 | /* The first packet we send to the target is the optional "supported |
4030 | packets" request. If the target can answer this, it will tell us | |
4031 | which later probes to skip. */ | |
4032 | remote_query_supported (); | |
4033 | ||
d914c394 | 4034 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4035 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4036 | remote_set_permissions (target); |
d914c394 | 4037 | |
fef3cb9f JK |
4038 | /* See unknown_v_replies_ok description. */ |
4039 | { | |
4040 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4041 | ||
4042 | putpkt (v_mustreplyempty); | |
4043 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4044 | if (strcmp (rs->buf, "OK") == 0) | |
4045 | unknown_v_replies_ok = 1; | |
4046 | else if (strcmp (rs->buf, "") == 0) | |
4047 | unknown_v_replies_ok = 0; | |
4048 | else | |
4049 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, | |
4050 | rs->buf); | |
4051 | } | |
4052 | ||
c8d104ad PA |
4053 | /* Next, we possibly activate noack mode. |
4054 | ||
4055 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4056 | enable noack mode if the stub reported a wish for it with | |
4057 | qSupported. | |
4058 | ||
4059 | If set to TRUE, then enable noack mode even if the stub didn't | |
4060 | report it in qSupported. If the stub doesn't reply OK, the | |
4061 | session ends with an error. | |
4062 | ||
4063 | If FALSE, then don't activate noack mode, regardless of what the | |
4064 | stub claimed should be the default with qSupported. */ | |
4065 | ||
4066 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4067 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4068 | { |
4069 | putpkt ("QStartNoAckMode"); | |
4070 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4071 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4072 | rs->noack_mode = 1; | |
4073 | } | |
4074 | ||
04bd08de | 4075 | if (extended_p) |
5fe04517 PA |
4076 | { |
4077 | /* Tell the remote that we are using the extended protocol. */ | |
4078 | putpkt ("!"); | |
4079 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4080 | } | |
4081 | ||
9b224c5e PA |
4082 | /* Let the target know which signals it is allowed to pass down to |
4083 | the program. */ | |
4084 | update_signals_program_target (); | |
4085 | ||
d962ef82 DJ |
4086 | /* Next, if the target can specify a description, read it. We do |
4087 | this before anything involving memory or registers. */ | |
4088 | target_find_description (); | |
4089 | ||
6c95b8df PA |
4090 | /* Next, now that we know something about the target, update the |
4091 | address spaces in the program spaces. */ | |
4092 | update_address_spaces (); | |
4093 | ||
50c71eaf PA |
4094 | /* On OSs where the list of libraries is global to all |
4095 | processes, we fetch them early. */ | |
f5656ead | 4096 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 4097 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 4098 | |
6efcd9a8 | 4099 | if (target_is_non_stop_p ()) |
74531fed | 4100 | { |
4082afcc | 4101 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4102 | error (_("Non-stop mode requested, but remote " |
4103 | "does not support non-stop")); | |
74531fed PA |
4104 | |
4105 | putpkt ("QNonStop:1"); | |
4106 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4107 | ||
4108 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4109 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4110 | |
4111 | /* Find about threads and processes the stub is already | |
4112 | controlling. We default to adding them in the running state. | |
4113 | The '?' query below will then tell us about which threads are | |
4114 | stopped. */ | |
e8032dde | 4115 | remote_update_thread_list (target); |
74531fed | 4116 | } |
4082afcc | 4117 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4118 | { |
4119 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4120 | Request it explicitly. */ |
74531fed PA |
4121 | putpkt ("QNonStop:0"); |
4122 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4123 | ||
4124 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4125 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4126 | } |
4127 | ||
a0743c90 YQ |
4128 | /* Upload TSVs regardless of whether the target is running or not. The |
4129 | remote stub, such as GDBserver, may have some predefined or builtin | |
4130 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4131 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4132 | { |
4133 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4134 | ||
181e3713 | 4135 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4136 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4137 | } | |
4138 | ||
2d717e4f DJ |
4139 | /* Check whether the target is running now. */ |
4140 | putpkt ("?"); | |
4141 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4142 | ||
6efcd9a8 | 4143 | if (!target_is_non_stop_p ()) |
2d717e4f | 4144 | { |
74531fed | 4145 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4146 | { |
04bd08de | 4147 | if (!extended_p) |
74531fed | 4148 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4149 | |
4150 | /* We're connected, but not running. Drop out before we | |
4151 | call start_remote. */ | |
e278ad5b | 4152 | rs->starting_up = 0; |
c35b1492 | 4153 | return; |
2d717e4f DJ |
4154 | } |
4155 | else | |
74531fed | 4156 | { |
74531fed | 4157 | /* Save the reply for later. */ |
224c3ddb | 4158 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4159 | strcpy (wait_status, rs->buf); |
4160 | } | |
4161 | ||
b7ea362b | 4162 | /* Fetch thread list. */ |
e8032dde | 4163 | target_update_thread_list (); |
b7ea362b | 4164 | |
74531fed PA |
4165 | /* Let the stub know that we want it to return the thread. */ |
4166 | set_continue_thread (minus_one_ptid); | |
4167 | ||
b7ea362b PA |
4168 | if (thread_count () == 0) |
4169 | { | |
4170 | /* Target has no concept of threads at all. GDB treats | |
4171 | non-threaded target as single-threaded; add a main | |
4172 | thread. */ | |
4173 | add_current_inferior_and_thread (wait_status); | |
4174 | } | |
4175 | else | |
4176 | { | |
4177 | /* We have thread information; select the thread the target | |
4178 | says should be current. If we're reconnecting to a | |
4179 | multi-threaded program, this will ideally be the thread | |
4180 | that last reported an event before GDB disconnected. */ | |
4181 | inferior_ptid = get_current_thread (wait_status); | |
4182 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4183 | { | |
4184 | /* Odd... The target was able to list threads, but not | |
4185 | tell us which thread was current (no "thread" | |
4186 | register in T stop reply?). Just pick the first | |
4187 | thread in the thread list then. */ | |
c9f35b34 KB |
4188 | |
4189 | if (remote_debug) | |
4190 | fprintf_unfiltered (gdb_stdlog, | |
4191 | "warning: couldn't determine remote " | |
4192 | "current thread; picking first in list.\n"); | |
4193 | ||
b7ea362b PA |
4194 | inferior_ptid = thread_list->ptid; |
4195 | } | |
4196 | } | |
74531fed | 4197 | |
6e586cc5 YQ |
4198 | /* init_wait_for_inferior should be called before get_offsets in order |
4199 | to manage `inserted' flag in bp loc in a correct state. | |
4200 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4201 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4202 | start_remote, set `inserted' flag to 1. In the initialization of | |
4203 | inferior, breakpoint_init_inferior should be called first, and then | |
4204 | breakpoint_re_set can be called. If this order is broken, state of | |
4205 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4206 | manipulation. */ | |
4207 | init_wait_for_inferior (); | |
4208 | ||
74531fed PA |
4209 | get_offsets (); /* Get text, data & bss offsets. */ |
4210 | ||
d962ef82 DJ |
4211 | /* If we could not find a description using qXfer, and we know |
4212 | how to do it some other way, try again. This is not | |
4213 | supported for non-stop; it could be, but it is tricky if | |
4214 | there are no stopped threads when we connect. */ | |
04bd08de | 4215 | if (remote_read_description_p (target) |
f5656ead | 4216 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4217 | { |
4218 | target_clear_description (); | |
4219 | target_find_description (); | |
4220 | } | |
4221 | ||
74531fed PA |
4222 | /* Use the previously fetched status. */ |
4223 | gdb_assert (wait_status != NULL); | |
4224 | strcpy (rs->buf, wait_status); | |
4225 | rs->cached_wait_status = 1; | |
4226 | ||
4227 | immediate_quit--; | |
04bd08de | 4228 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4229 | } |
4230 | else | |
4231 | { | |
68c97600 PA |
4232 | /* Clear WFI global state. Do this before finding about new |
4233 | threads and inferiors, and setting the current inferior. | |
4234 | Otherwise we would clear the proceed status of the current | |
4235 | inferior when we want its stop_soon state to be preserved | |
4236 | (see notice_new_inferior). */ | |
4237 | init_wait_for_inferior (); | |
4238 | ||
74531fed PA |
4239 | /* In non-stop, we will either get an "OK", meaning that there |
4240 | are no stopped threads at this time; or, a regular stop | |
4241 | reply. In the latter case, there may be more than one thread | |
4242 | stopped --- we pull them all out using the vStopped | |
4243 | mechanism. */ | |
4244 | if (strcmp (rs->buf, "OK") != 0) | |
4245 | { | |
722247f1 | 4246 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4247 | |
722247f1 YQ |
4248 | /* remote_notif_get_pending_replies acks this one, and gets |
4249 | the rest out. */ | |
f48ff2a7 | 4250 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4251 | = remote_notif_parse (notif, rs->buf); |
4252 | remote_notif_get_pending_events (notif); | |
74531fed | 4253 | } |
2d717e4f | 4254 | |
74531fed PA |
4255 | if (thread_count () == 0) |
4256 | { | |
04bd08de | 4257 | if (!extended_p) |
74531fed | 4258 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4259 | |
c35b1492 PA |
4260 | /* We're connected, but not running. Drop out before we |
4261 | call start_remote. */ | |
e278ad5b | 4262 | rs->starting_up = 0; |
c35b1492 PA |
4263 | return; |
4264 | } | |
74531fed | 4265 | |
74531fed PA |
4266 | /* In non-stop mode, any cached wait status will be stored in |
4267 | the stop reply queue. */ | |
4268 | gdb_assert (wait_status == NULL); | |
f0223081 | 4269 | |
2455069d | 4270 | /* Report all signals during attach/startup. */ |
94bedb42 | 4271 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4272 | |
4273 | /* If there are already stopped threads, mark them stopped and | |
4274 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4275 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4276 | |
4277 | if (target_can_async_p ()) | |
4278 | target_async (1); | |
74531fed | 4279 | } |
c8d104ad | 4280 | |
c8d104ad PA |
4281 | /* If we connected to a live target, do some additional setup. */ |
4282 | if (target_has_execution) | |
4283 | { | |
f4ccffad | 4284 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4285 | remote_check_symbols (); |
c8d104ad | 4286 | } |
50c71eaf | 4287 | |
d5551862 SS |
4288 | /* Possibly the target has been engaged in a trace run started |
4289 | previously; find out where things are at. */ | |
8bd200f1 | 4290 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4291 | { |
00bf0b85 | 4292 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4293 | |
00bf0b85 SS |
4294 | if (current_trace_status ()->running) |
4295 | printf_filtered (_("Trace is already running on the target.\n")); | |
4296 | ||
ab6617cc | 4297 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4298 | |
4299 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4300 | } |
4301 | ||
1e51243a PA |
4302 | /* The thread and inferior lists are now synchronized with the |
4303 | target, our symbols have been relocated, and we're merged the | |
4304 | target's tracepoints with ours. We're done with basic start | |
4305 | up. */ | |
4306 | rs->starting_up = 0; | |
4307 | ||
a25a5a45 PA |
4308 | /* Maybe breakpoints are global and need to be inserted now. */ |
4309 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4310 | insert_breakpoints (); |
c906108c SS |
4311 | } |
4312 | ||
4313 | /* Open a connection to a remote debugger. | |
4314 | NAME is the filename used for communication. */ | |
4315 | ||
4316 | static void | |
014f9477 | 4317 | remote_open (const char *name, int from_tty) |
c906108c | 4318 | { |
75c99385 | 4319 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4320 | } |
4321 | ||
c906108c SS |
4322 | /* Open a connection to a remote debugger using the extended |
4323 | remote gdb protocol. NAME is the filename used for communication. */ | |
4324 | ||
4325 | static void | |
014f9477 | 4326 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4327 | { |
75c99385 | 4328 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4329 | } |
4330 | ||
ca4f7f8b PA |
4331 | /* Reset all packets back to "unknown support". Called when opening a |
4332 | new connection to a remote target. */ | |
c906108c | 4333 | |
d471ea57 | 4334 | static void |
ca4f7f8b | 4335 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4336 | { |
4337 | int i; | |
a744cf53 | 4338 | |
444abaca | 4339 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4340 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4341 | } |
4342 | ||
ca4f7f8b PA |
4343 | /* Initialize all packet configs. */ |
4344 | ||
4345 | static void | |
4346 | init_all_packet_configs (void) | |
4347 | { | |
4348 | int i; | |
4349 | ||
4350 | for (i = 0; i < PACKET_MAX; i++) | |
4351 | { | |
4352 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4353 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4354 | } | |
4355 | } | |
4356 | ||
23860348 | 4357 | /* Symbol look-up. */ |
dc8acb97 MS |
4358 | |
4359 | static void | |
36d25514 | 4360 | remote_check_symbols (void) |
dc8acb97 | 4361 | { |
d01949b6 | 4362 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4363 | char *msg, *reply, *tmp; |
dc8acb97 | 4364 | int end; |
28170b88 | 4365 | long reply_size; |
a5c0808e | 4366 | struct cleanup *old_chain; |
dc8acb97 | 4367 | |
63154eca PA |
4368 | /* The remote side has no concept of inferiors that aren't running |
4369 | yet, it only knows about running processes. If we're connected | |
4370 | but our current inferior is not running, we should not invite the | |
4371 | remote target to request symbol lookups related to its | |
4372 | (unrelated) current process. */ | |
4373 | if (!target_has_execution) | |
4374 | return; | |
4375 | ||
4082afcc | 4376 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4377 | return; |
4378 | ||
63154eca PA |
4379 | /* Make sure the remote is pointing at the right process. Note |
4380 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4381 | set_general_process (); |
4382 | ||
6d820c5c DJ |
4383 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4384 | because we need both at the same time. */ | |
224c3ddb | 4385 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4386 | old_chain = make_cleanup (xfree, msg); |
28170b88 MK |
4387 | reply = (char *) xmalloc (get_remote_packet_size ()); |
4388 | make_cleanup (free_current_contents, &reply); | |
4389 | reply_size = get_remote_packet_size (); | |
6d820c5c | 4390 | |
23860348 | 4391 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4392 | |
4393 | putpkt ("qSymbol::"); | |
28170b88 MK |
4394 | getpkt (&reply, &reply_size, 0); |
4395 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 | 4396 | |
61012eef | 4397 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4398 | { |
77e371c0 TT |
4399 | struct bound_minimal_symbol sym; |
4400 | ||
dc8acb97 | 4401 | tmp = &reply[8]; |
cfd77fa1 | 4402 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4403 | msg[end] = '\0'; |
4404 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4405 | if (sym.minsym == NULL) |
ea9c271d | 4406 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4407 | else |
2bbe3cc1 | 4408 | { |
f5656ead | 4409 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4410 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4411 | |
4412 | /* If this is a function address, return the start of code | |
4413 | instead of any data function descriptor. */ | |
f5656ead | 4414 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4415 | sym_addr, |
4416 | ¤t_target); | |
4417 | ||
4418 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4419 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4420 | } |
4421 | ||
dc8acb97 | 4422 | putpkt (msg); |
28170b88 | 4423 | getpkt (&reply, &reply_size, 0); |
dc8acb97 | 4424 | } |
a5c0808e PA |
4425 | |
4426 | do_cleanups (old_chain); | |
dc8acb97 MS |
4427 | } |
4428 | ||
9db8d71f | 4429 | static struct serial * |
baa336ce | 4430 | remote_serial_open (const char *name) |
9db8d71f DJ |
4431 | { |
4432 | static int udp_warning = 0; | |
4433 | ||
4434 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4435 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4436 | serial connection is reliable and not the serial connection promising | |
4437 | to be. */ | |
61012eef | 4438 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4439 | { |
3e43a32a MS |
4440 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4441 | "Some events may be lost, rendering further debugging " | |
4442 | "impossible.")); | |
9db8d71f DJ |
4443 | udp_warning = 1; |
4444 | } | |
4445 | ||
4446 | return serial_open (name); | |
4447 | } | |
4448 | ||
d914c394 SS |
4449 | /* Inform the target of our permission settings. The permission flags |
4450 | work without this, but if the target knows the settings, it can do | |
4451 | a couple things. First, it can add its own check, to catch cases | |
4452 | that somehow manage to get by the permissions checks in target | |
4453 | methods. Second, if the target is wired to disallow particular | |
4454 | settings (for instance, a system in the field that is not set up to | |
4455 | be able to stop at a breakpoint), it can object to any unavailable | |
4456 | permissions. */ | |
4457 | ||
4458 | void | |
c378d69d | 4459 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4460 | { |
4461 | struct remote_state *rs = get_remote_state (); | |
4462 | ||
bba74b36 YQ |
4463 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4464 | "WriteReg:%x;WriteMem:%x;" | |
4465 | "InsertBreak:%x;InsertTrace:%x;" | |
4466 | "InsertFastTrace:%x;Stop:%x", | |
4467 | may_write_registers, may_write_memory, | |
4468 | may_insert_breakpoints, may_insert_tracepoints, | |
4469 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4470 | putpkt (rs->buf); |
4471 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4472 | ||
4473 | /* If the target didn't like the packet, warn the user. Do not try | |
4474 | to undo the user's settings, that would just be maddening. */ | |
4475 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4476 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4477 | } |
4478 | ||
be2a5f71 DJ |
4479 | /* This type describes each known response to the qSupported |
4480 | packet. */ | |
4481 | struct protocol_feature | |
4482 | { | |
4483 | /* The name of this protocol feature. */ | |
4484 | const char *name; | |
4485 | ||
4486 | /* The default for this protocol feature. */ | |
4487 | enum packet_support default_support; | |
4488 | ||
4489 | /* The function to call when this feature is reported, or after | |
4490 | qSupported processing if the feature is not supported. | |
4491 | The first argument points to this structure. The second | |
4492 | argument indicates whether the packet requested support be | |
4493 | enabled, disabled, or probed (or the default, if this function | |
4494 | is being called at the end of processing and this feature was | |
4495 | not reported). The third argument may be NULL; if not NULL, it | |
4496 | is a NUL-terminated string taken from the packet following | |
4497 | this feature's name and an equals sign. */ | |
4498 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4499 | const char *); | |
4500 | ||
4501 | /* The corresponding packet for this feature. Only used if | |
4502 | FUNC is remote_supported_packet. */ | |
4503 | int packet; | |
4504 | }; | |
4505 | ||
be2a5f71 DJ |
4506 | static void |
4507 | remote_supported_packet (const struct protocol_feature *feature, | |
4508 | enum packet_support support, | |
4509 | const char *argument) | |
4510 | { | |
4511 | if (argument) | |
4512 | { | |
4513 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4514 | " \"%s\"."), feature->name); | |
4515 | return; | |
4516 | } | |
4517 | ||
4082afcc | 4518 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4519 | } |
be2a5f71 DJ |
4520 | |
4521 | static void | |
4522 | remote_packet_size (const struct protocol_feature *feature, | |
4523 | enum packet_support support, const char *value) | |
4524 | { | |
4525 | struct remote_state *rs = get_remote_state (); | |
4526 | ||
4527 | int packet_size; | |
4528 | char *value_end; | |
4529 | ||
4530 | if (support != PACKET_ENABLE) | |
4531 | return; | |
4532 | ||
4533 | if (value == NULL || *value == '\0') | |
4534 | { | |
4535 | warning (_("Remote target reported \"%s\" without a size."), | |
4536 | feature->name); | |
4537 | return; | |
4538 | } | |
4539 | ||
4540 | errno = 0; | |
4541 | packet_size = strtol (value, &value_end, 16); | |
4542 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4543 | { | |
4544 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4545 | feature->name, value); | |
4546 | return; | |
4547 | } | |
4548 | ||
be2a5f71 DJ |
4549 | /* Record the new maximum packet size. */ |
4550 | rs->explicit_packet_size = packet_size; | |
4551 | } | |
4552 | ||
dc473cfb | 4553 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4554 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4555 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4556 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4557 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4558 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4559 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4560 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4561 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4562 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4563 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4564 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4565 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4566 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4567 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4568 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4569 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4570 | PACKET_qXfer_spu_read }, | |
4571 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4572 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4573 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4574 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4575 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4576 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4577 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4578 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4579 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4580 | PACKET_QPassSignals }, | |
82075af2 JS |
4581 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4582 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4583 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4584 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4585 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4586 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4587 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4588 | PACKET_multiprocess_feature }, | |
4589 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4590 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4591 | PACKET_qXfer_siginfo_read }, | |
4592 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4593 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4594 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4595 | PACKET_ConditionalTracepoints }, |
4082afcc | 4596 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4597 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4598 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4599 | PACKET_BreakpointCommands }, |
4082afcc | 4600 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4601 | PACKET_FastTracepoints }, |
4082afcc | 4602 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4603 | PACKET_StaticTracepoints }, |
4082afcc | 4604 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4605 | PACKET_InstallInTrace}, |
4082afcc PA |
4606 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4607 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4608 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4609 | PACKET_bc }, | |
4610 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4611 | PACKET_bs }, | |
409873ef SS |
4612 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4613 | PACKET_TracepointSource }, | |
d914c394 SS |
4614 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4615 | PACKET_QAllow }, | |
4082afcc PA |
4616 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4617 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4618 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4619 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4620 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4621 | PACKET_qXfer_uib }, | |
03583c20 UW |
4622 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4623 | PACKET_QDisableRandomization }, | |
d1feda86 | 4624 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4625 | { "QTBuffer:size", PACKET_DISABLE, |
4626 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4627 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4628 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4629 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4630 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4631 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4632 | PACKET_qXfer_btrace }, |
4633 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4634 | PACKET_qXfer_btrace_conf }, |
4635 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4636 | PACKET_Qbtrace_conf_bts_size }, |
4637 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4638 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4639 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4640 | PACKET_fork_event_feature }, | |
4641 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4642 | PACKET_vfork_event_feature }, | |
94585166 DB |
4643 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4644 | PACKET_exec_event_feature }, | |
b20a6524 | 4645 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4646 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4647 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4648 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4649 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4650 | }; |
4651 | ||
c8d5aac9 L |
4652 | static char *remote_support_xml; |
4653 | ||
4654 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4655 | ||
4656 | void | |
6e39997a | 4657 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4658 | { |
4659 | #if defined(HAVE_LIBEXPAT) | |
4660 | if (remote_support_xml == NULL) | |
c4f7c687 | 4661 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4662 | else |
4663 | { | |
4664 | char *copy = xstrdup (remote_support_xml + 13); | |
4665 | char *p = strtok (copy, ","); | |
4666 | ||
4667 | do | |
4668 | { | |
4669 | if (strcmp (p, xml) == 0) | |
4670 | { | |
4671 | /* already there */ | |
4672 | xfree (copy); | |
4673 | return; | |
4674 | } | |
4675 | } | |
4676 | while ((p = strtok (NULL, ",")) != NULL); | |
4677 | xfree (copy); | |
4678 | ||
94b0dee1 PA |
4679 | remote_support_xml = reconcat (remote_support_xml, |
4680 | remote_support_xml, ",", xml, | |
4681 | (char *) NULL); | |
c8d5aac9 L |
4682 | } |
4683 | #endif | |
4684 | } | |
4685 | ||
4686 | static char * | |
4687 | remote_query_supported_append (char *msg, const char *append) | |
4688 | { | |
4689 | if (msg) | |
94b0dee1 | 4690 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4691 | else |
4692 | return xstrdup (append); | |
4693 | } | |
4694 | ||
be2a5f71 DJ |
4695 | static void |
4696 | remote_query_supported (void) | |
4697 | { | |
4698 | struct remote_state *rs = get_remote_state (); | |
4699 | char *next; | |
4700 | int i; | |
4701 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4702 | ||
4703 | /* The packet support flags are handled differently for this packet | |
4704 | than for most others. We treat an error, a disabled packet, and | |
4705 | an empty response identically: any features which must be reported | |
4706 | to be used will be automatically disabled. An empty buffer | |
4707 | accomplishes this, since that is also the representation for a list | |
4708 | containing no features. */ | |
4709 | ||
4710 | rs->buf[0] = 0; | |
4082afcc | 4711 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4712 | { |
c8d5aac9 | 4713 | char *q = NULL; |
94b0dee1 | 4714 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4715 | |
73b8c1fd PA |
4716 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4717 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4718 | |
f7e6eed5 PA |
4719 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4720 | q = remote_query_supported_append (q, "swbreak+"); | |
4721 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4722 | q = remote_query_supported_append (q, "hwbreak+"); | |
4723 | ||
dde08ee1 PA |
4724 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4725 | ||
8020350c DB |
4726 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4727 | != AUTO_BOOLEAN_FALSE) | |
4728 | q = remote_query_supported_append (q, "fork-events+"); | |
4729 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4730 | != AUTO_BOOLEAN_FALSE) | |
4731 | q = remote_query_supported_append (q, "vfork-events+"); | |
4732 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4733 | != AUTO_BOOLEAN_FALSE) | |
4734 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4735 | |
750ce8d1 YQ |
4736 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4737 | q = remote_query_supported_append (q, "vContSupported+"); | |
4738 | ||
65706a29 PA |
4739 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4740 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4741 | ||
f2faf941 PA |
4742 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4743 | q = remote_query_supported_append (q, "no-resumed+"); | |
4744 | ||
b35d5edb PA |
4745 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4746 | the qSupported:xmlRegisters=i386 handling. */ | |
4747 | if (remote_support_xml != NULL) | |
4748 | q = remote_query_supported_append (q, remote_support_xml); | |
4749 | ||
dde08ee1 PA |
4750 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4751 | putpkt (q); | |
82f73884 | 4752 | |
94b0dee1 PA |
4753 | do_cleanups (old_chain); |
4754 | ||
be2a5f71 DJ |
4755 | getpkt (&rs->buf, &rs->buf_size, 0); |
4756 | ||
4757 | /* If an error occured, warn, but do not return - just reset the | |
4758 | buffer to empty and go on to disable features. */ | |
4759 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4760 | == PACKET_ERROR) | |
4761 | { | |
4762 | warning (_("Remote failure reply: %s"), rs->buf); | |
4763 | rs->buf[0] = 0; | |
4764 | } | |
4765 | } | |
4766 | ||
4767 | memset (seen, 0, sizeof (seen)); | |
4768 | ||
4769 | next = rs->buf; | |
4770 | while (*next) | |
4771 | { | |
4772 | enum packet_support is_supported; | |
4773 | char *p, *end, *name_end, *value; | |
4774 | ||
4775 | /* First separate out this item from the rest of the packet. If | |
4776 | there's another item after this, we overwrite the separator | |
4777 | (terminated strings are much easier to work with). */ | |
4778 | p = next; | |
4779 | end = strchr (p, ';'); | |
4780 | if (end == NULL) | |
4781 | { | |
4782 | end = p + strlen (p); | |
4783 | next = end; | |
4784 | } | |
4785 | else | |
4786 | { | |
89be2091 DJ |
4787 | *end = '\0'; |
4788 | next = end + 1; | |
4789 | ||
be2a5f71 DJ |
4790 | if (end == p) |
4791 | { | |
4792 | warning (_("empty item in \"qSupported\" response")); | |
4793 | continue; | |
4794 | } | |
be2a5f71 DJ |
4795 | } |
4796 | ||
4797 | name_end = strchr (p, '='); | |
4798 | if (name_end) | |
4799 | { | |
4800 | /* This is a name=value entry. */ | |
4801 | is_supported = PACKET_ENABLE; | |
4802 | value = name_end + 1; | |
4803 | *name_end = '\0'; | |
4804 | } | |
4805 | else | |
4806 | { | |
4807 | value = NULL; | |
4808 | switch (end[-1]) | |
4809 | { | |
4810 | case '+': | |
4811 | is_supported = PACKET_ENABLE; | |
4812 | break; | |
4813 | ||
4814 | case '-': | |
4815 | is_supported = PACKET_DISABLE; | |
4816 | break; | |
4817 | ||
4818 | case '?': | |
4819 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4820 | break; | |
4821 | ||
4822 | default: | |
3e43a32a MS |
4823 | warning (_("unrecognized item \"%s\" " |
4824 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4825 | continue; |
4826 | } | |
4827 | end[-1] = '\0'; | |
4828 | } | |
4829 | ||
4830 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4831 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4832 | { | |
4833 | const struct protocol_feature *feature; | |
4834 | ||
4835 | seen[i] = 1; | |
4836 | feature = &remote_protocol_features[i]; | |
4837 | feature->func (feature, is_supported, value); | |
4838 | break; | |
4839 | } | |
4840 | } | |
4841 | ||
4842 | /* If we increased the packet size, make sure to increase the global | |
4843 | buffer size also. We delay this until after parsing the entire | |
4844 | qSupported packet, because this is the same buffer we were | |
4845 | parsing. */ | |
4846 | if (rs->buf_size < rs->explicit_packet_size) | |
4847 | { | |
4848 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4849 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4850 | } |
4851 | ||
4852 | /* Handle the defaults for unmentioned features. */ | |
4853 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4854 | if (!seen[i]) | |
4855 | { | |
4856 | const struct protocol_feature *feature; | |
4857 | ||
4858 | feature = &remote_protocol_features[i]; | |
4859 | feature->func (feature, feature->default_support, NULL); | |
4860 | } | |
4861 | } | |
4862 | ||
78a095c3 JK |
4863 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4864 | on it so remove them first. */ | |
4865 | ||
4866 | static void | |
4867 | remote_unpush_target (void) | |
4868 | { | |
915ef8b1 | 4869 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4870 | } |
be2a5f71 | 4871 | |
c906108c | 4872 | static void |
014f9477 | 4873 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4874 | struct target_ops *target, int extended_p) |
c906108c | 4875 | { |
d01949b6 | 4876 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4877 | |
c906108c | 4878 | if (name == 0) |
8a3fe4f8 | 4879 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4880 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4881 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4882 | |
23860348 | 4883 | /* See FIXME above. */ |
c6ebd6cf | 4884 | if (!target_async_permitted) |
92d1e331 | 4885 | wait_forever_enabled_p = 1; |
6426a772 | 4886 | |
2d717e4f | 4887 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4888 | Ask this question first, before target_preopen has a chance to kill |
4889 | anything. */ | |
5d93a237 | 4890 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4891 | { |
78a095c3 JK |
4892 | if (from_tty |
4893 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4894 | error (_("Still connected.")); |
4895 | } | |
4896 | ||
78a095c3 | 4897 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4898 | target_preopen (from_tty); |
4899 | ||
89be2091 | 4900 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4901 | xfree (rs->last_pass_packet); |
4902 | rs->last_pass_packet = NULL; | |
89be2091 | 4903 | |
9b224c5e PA |
4904 | /* Make sure we send the program signals list the next time we |
4905 | resume. */ | |
5e4a05c4 TT |
4906 | xfree (rs->last_program_signals_packet); |
4907 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4908 | |
ad9a8f3f | 4909 | remote_fileio_reset (); |
1dd41f16 NS |
4910 | reopen_exec_file (); |
4911 | reread_symbols (); | |
4912 | ||
5d93a237 TT |
4913 | rs->remote_desc = remote_serial_open (name); |
4914 | if (!rs->remote_desc) | |
c906108c SS |
4915 | perror_with_name (name); |
4916 | ||
4917 | if (baud_rate != -1) | |
4918 | { | |
5d93a237 | 4919 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4920 | { |
9b74d5d3 KB |
4921 | /* The requested speed could not be set. Error out to |
4922 | top level after closing remote_desc. Take care to | |
4923 | set remote_desc to NULL to avoid closing remote_desc | |
4924 | more than once. */ | |
5d93a237 TT |
4925 | serial_close (rs->remote_desc); |
4926 | rs->remote_desc = NULL; | |
c906108c SS |
4927 | perror_with_name (name); |
4928 | } | |
4929 | } | |
4930 | ||
236af5e3 | 4931 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4932 | serial_raw (rs->remote_desc); |
c906108c SS |
4933 | |
4934 | /* If there is something sitting in the buffer we might take it as a | |
4935 | response to a command, which would be bad. */ | |
5d93a237 | 4936 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4937 | |
4938 | if (from_tty) | |
4939 | { | |
4940 | puts_filtered ("Remote debugging using "); | |
4941 | puts_filtered (name); | |
4942 | puts_filtered ("\n"); | |
4943 | } | |
23860348 | 4944 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4945 | |
74531fed PA |
4946 | /* Register extra event sources in the event loop. */ |
4947 | remote_async_inferior_event_token | |
4948 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4949 | NULL); | |
5965e028 | 4950 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4951 | |
be2a5f71 DJ |
4952 | /* Reset the target state; these things will be queried either by |
4953 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4954 | reset_all_packet_configs_support (); |
74531fed | 4955 | rs->cached_wait_status = 0; |
be2a5f71 | 4956 | rs->explicit_packet_size = 0; |
a6f3e723 | 4957 | rs->noack_mode = 0; |
82f73884 | 4958 | rs->extended = extended_p; |
e24a49d8 | 4959 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4960 | rs->ctrlc_pending_p = 0; |
802188a7 | 4961 | |
47f8a51d TT |
4962 | rs->general_thread = not_sent_ptid; |
4963 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4964 | rs->remote_traceframe_number = -1; |
c906108c | 4965 | |
9d1f7ab2 | 4966 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4967 | rs->use_threadinfo_query = 1; |
4968 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4969 | |
80152258 PA |
4970 | readahead_cache_invalidate (); |
4971 | ||
c6ebd6cf | 4972 | if (target_async_permitted) |
92d1e331 | 4973 | { |
23860348 | 4974 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4975 | remote_async_terminal_ours_p = 1; |
4976 | ||
4977 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4978 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4979 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4980 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4981 | around this. Eventually a mechanism that allows |
92d1e331 | 4982 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4983 | implemented. */ |
92d1e331 DJ |
4984 | wait_forever_enabled_p = 0; |
4985 | } | |
4986 | ||
23860348 | 4987 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4988 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4989 | |
74531fed PA |
4990 | /* Start afresh. */ |
4991 | init_thread_list (); | |
4992 | ||
36918e70 | 4993 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4994 | target (we'd otherwise be in an inconsistent state) and then |
4995 | propogate the error on up the exception chain. This ensures that | |
4996 | the caller doesn't stumble along blindly assuming that the | |
4997 | function succeeded. The CLI doesn't have this problem but other | |
4998 | UI's, such as MI do. | |
36918e70 AC |
4999 | |
5000 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5001 | this function should return an error indication letting the | |
ce2826aa | 5002 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5003 | ``target remote'' is directly wired to this function making that |
5004 | impossible. On a positive note, the CLI side of this problem has | |
5005 | been fixed - the function set_cmd_context() makes it possible for | |
5006 | all the ``target ....'' commands to share a common callback | |
5007 | function. See cli-dump.c. */ | |
109c3e39 | 5008 | { |
2d717e4f | 5009 | |
492d29ea | 5010 | TRY |
04bd08de TT |
5011 | { |
5012 | remote_start_remote (from_tty, target, extended_p); | |
5013 | } | |
492d29ea | 5014 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 5015 | { |
c8d104ad PA |
5016 | /* Pop the partially set up target - unless something else did |
5017 | already before throwing the exception. */ | |
5d93a237 | 5018 | if (rs->remote_desc != NULL) |
78a095c3 | 5019 | remote_unpush_target (); |
c6ebd6cf | 5020 | if (target_async_permitted) |
109c3e39 AC |
5021 | wait_forever_enabled_p = 1; |
5022 | throw_exception (ex); | |
5023 | } | |
492d29ea | 5024 | END_CATCH |
109c3e39 | 5025 | } |
c906108c | 5026 | |
f4abbc16 MM |
5027 | remote_btrace_reset (); |
5028 | ||
c6ebd6cf | 5029 | if (target_async_permitted) |
92d1e331 | 5030 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5031 | } |
5032 | ||
de0d863e DB |
5033 | /* Detach the specified process. */ |
5034 | ||
5035 | static void | |
5036 | remote_detach_pid (int pid) | |
5037 | { | |
5038 | struct remote_state *rs = get_remote_state (); | |
5039 | ||
5040 | if (remote_multi_process_p (rs)) | |
5041 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5042 | else | |
5043 | strcpy (rs->buf, "D"); | |
5044 | ||
5045 | putpkt (rs->buf); | |
5046 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5047 | ||
5048 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5049 | ; | |
5050 | else if (rs->buf[0] == '\0') | |
5051 | error (_("Remote doesn't know how to detach")); | |
5052 | else | |
5053 | error (_("Can't detach process.")); | |
5054 | } | |
5055 | ||
5056 | /* This detaches a program to which we previously attached, using | |
5057 | inferior_ptid to identify the process. After this is done, GDB | |
5058 | can be used to debug some other program. We better not have left | |
5059 | any breakpoints in the target program or it'll die when it hits | |
5060 | one. */ | |
c906108c SS |
5061 | |
5062 | static void | |
de0d863e | 5063 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5064 | { |
82f73884 | 5065 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5066 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5067 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5068 | int is_fork_parent; | |
c906108c SS |
5069 | |
5070 | if (args) | |
8a3fe4f8 | 5071 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5072 | |
2d717e4f DJ |
5073 | if (!target_has_execution) |
5074 | error (_("No process to detach from.")); | |
5075 | ||
7cee1e54 PA |
5076 | if (from_tty) |
5077 | { | |
5078 | char *exec_file = get_exec_file (0); | |
5079 | if (exec_file == NULL) | |
5080 | exec_file = ""; | |
5081 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
5082 | target_pid_to_str (pid_to_ptid (pid))); | |
5083 | gdb_flush (gdb_stdout); | |
5084 | } | |
5085 | ||
c906108c | 5086 | /* Tell the remote target to detach. */ |
de0d863e | 5087 | remote_detach_pid (pid); |
82f73884 | 5088 | |
8020350c DB |
5089 | /* Exit only if this is the only active inferior. */ |
5090 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5091 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5092 | |
de0d863e DB |
5093 | /* Check to see if we are detaching a fork parent. Note that if we |
5094 | are detaching a fork child, tp == NULL. */ | |
5095 | is_fork_parent = (tp != NULL | |
5096 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5097 | ||
5098 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5099 | breakpoints that should be available for the followed inferior. */ | |
5100 | if (!is_fork_parent) | |
5101 | target_mourn_inferior (); | |
5102 | else | |
5103 | { | |
5104 | inferior_ptid = null_ptid; | |
5105 | detach_inferior (pid); | |
5106 | } | |
2d717e4f DJ |
5107 | } |
5108 | ||
5109 | static void | |
52554a0e | 5110 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5111 | { |
de0d863e | 5112 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5113 | } |
5114 | ||
5115 | static void | |
52554a0e | 5116 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5117 | { |
de0d863e DB |
5118 | remote_detach_1 (args, from_tty); |
5119 | } | |
5120 | ||
5121 | /* Target follow-fork function for remote targets. On entry, and | |
5122 | at return, the current inferior is the fork parent. | |
5123 | ||
5124 | Note that although this is currently only used for extended-remote, | |
5125 | it is named remote_follow_fork in anticipation of using it for the | |
5126 | remote target as well. */ | |
5127 | ||
5128 | static int | |
5129 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5130 | int detach_fork) | |
5131 | { | |
5132 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5133 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5134 | |
c269dbdb DB |
5135 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5136 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5137 | { |
5138 | /* When following the parent and detaching the child, we detach | |
5139 | the child here. For the case of following the child and | |
5140 | detaching the parent, the detach is done in the target- | |
5141 | independent follow fork code in infrun.c. We can't use | |
5142 | target_detach when detaching an unfollowed child because | |
5143 | the client side doesn't know anything about the child. */ | |
5144 | if (detach_fork && !follow_child) | |
5145 | { | |
5146 | /* Detach the fork child. */ | |
5147 | ptid_t child_ptid; | |
5148 | pid_t child_pid; | |
5149 | ||
5150 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5151 | child_pid = ptid_get_pid (child_ptid); | |
5152 | ||
5153 | remote_detach_pid (child_pid); | |
5154 | detach_inferior (child_pid); | |
5155 | } | |
5156 | } | |
5157 | return 0; | |
c906108c SS |
5158 | } |
5159 | ||
94585166 DB |
5160 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5161 | in the program space of the new inferior. On entry and at return the | |
5162 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5163 | inferior, which may be the same as the exec'ing inferior unless | |
5164 | follow-exec-mode is "new". */ | |
5165 | ||
5166 | static void | |
5167 | remote_follow_exec (struct target_ops *ops, | |
5168 | struct inferior *inf, char *execd_pathname) | |
5169 | { | |
5170 | /* We know that this is a target file name, so if it has the "target:" | |
5171 | prefix we strip it off before saving it in the program space. */ | |
5172 | if (is_target_filename (execd_pathname)) | |
5173 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5174 | ||
5175 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5176 | } | |
5177 | ||
6ad8ae5c DJ |
5178 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5179 | ||
43ff13b4 | 5180 | static void |
fee354ee | 5181 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5182 | { |
43ff13b4 | 5183 | if (args) |
2d717e4f | 5184 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5185 | |
8020350c DB |
5186 | /* Make sure we unpush even the extended remote targets. Calling |
5187 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5188 | unpush if there is more than one inferior left. */ | |
5189 | unpush_target (target); | |
5190 | generic_mourn_inferior (); | |
2d717e4f | 5191 | |
43ff13b4 JM |
5192 | if (from_tty) |
5193 | puts_filtered ("Ending remote debugging.\n"); | |
5194 | } | |
5195 | ||
2d717e4f DJ |
5196 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5197 | be chatty about it. */ | |
5198 | ||
5199 | static void | |
20f796c9 GB |
5200 | extended_remote_attach (struct target_ops *target, const char *args, |
5201 | int from_tty) | |
2d717e4f DJ |
5202 | { |
5203 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5204 | int pid; |
96ef3384 | 5205 | char *wait_status = NULL; |
2d717e4f | 5206 | |
74164c56 | 5207 | pid = parse_pid_to_attach (args); |
2d717e4f | 5208 | |
74164c56 JK |
5209 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5210 | way as in other targets. */ | |
2d717e4f | 5211 | |
4082afcc | 5212 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5213 | error (_("This target does not support attaching to a process")); |
5214 | ||
7cee1e54 PA |
5215 | if (from_tty) |
5216 | { | |
5217 | char *exec_file = get_exec_file (0); | |
5218 | ||
5219 | if (exec_file) | |
5220 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5221 | target_pid_to_str (pid_to_ptid (pid))); | |
5222 | else | |
5223 | printf_unfiltered (_("Attaching to %s\n"), | |
5224 | target_pid_to_str (pid_to_ptid (pid))); | |
5225 | ||
5226 | gdb_flush (gdb_stdout); | |
5227 | } | |
5228 | ||
bba74b36 | 5229 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5230 | putpkt (rs->buf); |
5231 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5232 | ||
4082afcc PA |
5233 | switch (packet_ok (rs->buf, |
5234 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5235 | { |
4082afcc | 5236 | case PACKET_OK: |
6efcd9a8 | 5237 | if (!target_is_non_stop_p ()) |
74531fed PA |
5238 | { |
5239 | /* Save the reply for later. */ | |
224c3ddb | 5240 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5241 | strcpy (wait_status, rs->buf); |
5242 | } | |
5243 | else if (strcmp (rs->buf, "OK") != 0) | |
5244 | error (_("Attaching to %s failed with: %s"), | |
5245 | target_pid_to_str (pid_to_ptid (pid)), | |
5246 | rs->buf); | |
4082afcc PA |
5247 | break; |
5248 | case PACKET_UNKNOWN: | |
5249 | error (_("This target does not support attaching to a process")); | |
5250 | default: | |
5251 | error (_("Attaching to %s failed"), | |
5252 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5253 | } |
2d717e4f | 5254 | |
1b6e6f5c | 5255 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5256 | |
2d717e4f | 5257 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5258 | |
6efcd9a8 | 5259 | if (target_is_non_stop_p ()) |
bad34192 PA |
5260 | { |
5261 | struct thread_info *thread; | |
79d7f229 | 5262 | |
bad34192 | 5263 | /* Get list of threads. */ |
e8032dde | 5264 | remote_update_thread_list (target); |
82f73884 | 5265 | |
bad34192 PA |
5266 | thread = first_thread_of_process (pid); |
5267 | if (thread) | |
5268 | inferior_ptid = thread->ptid; | |
5269 | else | |
5270 | inferior_ptid = pid_to_ptid (pid); | |
5271 | ||
5272 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5273 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5274 | } |
74531fed | 5275 | else |
bad34192 PA |
5276 | { |
5277 | /* Now, if we have thread information, update inferior_ptid. */ | |
5278 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5279 | ||
5280 | /* Add the main thread to the thread list. */ | |
5281 | add_thread_silent (inferior_ptid); | |
5282 | } | |
c0a2216e | 5283 | |
96ef3384 UW |
5284 | /* Next, if the target can specify a description, read it. We do |
5285 | this before anything involving memory or registers. */ | |
5286 | target_find_description (); | |
5287 | ||
6efcd9a8 | 5288 | if (!target_is_non_stop_p ()) |
74531fed PA |
5289 | { |
5290 | /* Use the previously fetched status. */ | |
5291 | gdb_assert (wait_status != NULL); | |
5292 | ||
5293 | if (target_can_async_p ()) | |
5294 | { | |
722247f1 YQ |
5295 | struct notif_event *reply |
5296 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5297 | |
722247f1 | 5298 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5299 | |
6a3753b3 | 5300 | target_async (1); |
74531fed PA |
5301 | } |
5302 | else | |
5303 | { | |
5304 | gdb_assert (wait_status != NULL); | |
5305 | strcpy (rs->buf, wait_status); | |
5306 | rs->cached_wait_status = 1; | |
5307 | } | |
5308 | } | |
5309 | else | |
5310 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5311 | } |
5312 | ||
b9c1d481 AS |
5313 | /* Implementation of the to_post_attach method. */ |
5314 | ||
5315 | static void | |
5316 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5317 | { | |
6efcd9a8 PA |
5318 | /* Get text, data & bss offsets. */ |
5319 | get_offsets (); | |
5320 | ||
b9c1d481 AS |
5321 | /* In certain cases GDB might not have had the chance to start |
5322 | symbol lookup up until now. This could happen if the debugged | |
5323 | binary is not using shared libraries, the vsyscall page is not | |
5324 | present (on Linux) and the binary itself hadn't changed since the | |
5325 | debugging process was started. */ | |
5326 | if (symfile_objfile != NULL) | |
5327 | remote_check_symbols(); | |
5328 | } | |
5329 | ||
c906108c | 5330 | \f |
506fb367 DJ |
5331 | /* Check for the availability of vCont. This function should also check |
5332 | the response. */ | |
c906108c SS |
5333 | |
5334 | static void | |
6d820c5c | 5335 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5336 | { |
2e9f7625 | 5337 | char *buf; |
6d820c5c | 5338 | |
2e9f7625 DJ |
5339 | strcpy (rs->buf, "vCont?"); |
5340 | putpkt (rs->buf); | |
6d820c5c | 5341 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5342 | buf = rs->buf; |
c906108c | 5343 | |
506fb367 | 5344 | /* Make sure that the features we assume are supported. */ |
61012eef | 5345 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5346 | { |
5347 | char *p = &buf[5]; | |
750ce8d1 | 5348 | int support_c, support_C; |
506fb367 | 5349 | |
750ce8d1 YQ |
5350 | rs->supports_vCont.s = 0; |
5351 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5352 | support_c = 0; |
5353 | support_C = 0; | |
d458bd84 | 5354 | rs->supports_vCont.t = 0; |
c1e36e3e | 5355 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5356 | while (p && *p == ';') |
5357 | { | |
5358 | p++; | |
5359 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5360 | rs->supports_vCont.s = 1; |
506fb367 | 5361 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5362 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5363 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5364 | support_c = 1; | |
5365 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5366 | support_C = 1; | |
74531fed | 5367 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5368 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5369 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5370 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5371 | |
5372 | p = strchr (p, ';'); | |
5373 | } | |
c906108c | 5374 | |
750ce8d1 YQ |
5375 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5376 | BUF will make packet_ok disable the packet. */ | |
5377 | if (!support_c || !support_C) | |
506fb367 DJ |
5378 | buf[0] = 0; |
5379 | } | |
c906108c | 5380 | |
444abaca | 5381 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5382 | } |
c906108c | 5383 | |
0d8f58ca PA |
5384 | /* Helper function for building "vCont" resumptions. Write a |
5385 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5386 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5387 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5388 | resumed thread should be single-stepped and/or signalled. If PTID | |
5389 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5390 | represents a process, then all threads of the process are resumed; | |
5391 | the thread to be stepped and/or signalled is given in the global | |
5392 | INFERIOR_PTID. */ | |
5393 | ||
5394 | static char * | |
5395 | append_resumption (char *p, char *endp, | |
2ea28649 | 5396 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5397 | { |
5398 | struct remote_state *rs = get_remote_state (); | |
5399 | ||
a493e3e2 | 5400 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5401 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5402 | else if (step |
5403 | /* GDB is willing to range step. */ | |
5404 | && use_range_stepping | |
5405 | /* Target supports range stepping. */ | |
5406 | && rs->supports_vCont.r | |
5407 | /* We don't currently support range stepping multiple | |
5408 | threads with a wildcard (though the protocol allows it, | |
5409 | so stubs shouldn't make an active effort to forbid | |
5410 | it). */ | |
5411 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5412 | { | |
5413 | struct thread_info *tp; | |
5414 | ||
5415 | if (ptid_equal (ptid, minus_one_ptid)) | |
5416 | { | |
5417 | /* If we don't know about the target thread's tid, then | |
5418 | we're resuming magic_null_ptid (see caller). */ | |
5419 | tp = find_thread_ptid (magic_null_ptid); | |
5420 | } | |
5421 | else | |
5422 | tp = find_thread_ptid (ptid); | |
5423 | gdb_assert (tp != NULL); | |
5424 | ||
5425 | if (tp->control.may_range_step) | |
5426 | { | |
5427 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5428 | ||
5429 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5430 | phex_nz (tp->control.step_range_start, | |
5431 | addr_size), | |
5432 | phex_nz (tp->control.step_range_end, | |
5433 | addr_size)); | |
5434 | } | |
5435 | else | |
5436 | p += xsnprintf (p, endp - p, ";s"); | |
5437 | } | |
0d8f58ca PA |
5438 | else if (step) |
5439 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5440 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5441 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5442 | else | |
5443 | p += xsnprintf (p, endp - p, ";c"); | |
5444 | ||
5445 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5446 | { | |
5447 | ptid_t nptid; | |
5448 | ||
5449 | /* All (-1) threads of process. */ | |
ba348170 | 5450 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5451 | |
5452 | p += xsnprintf (p, endp - p, ":"); | |
5453 | p = write_ptid (p, endp, nptid); | |
5454 | } | |
5455 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5456 | { | |
5457 | p += xsnprintf (p, endp - p, ":"); | |
5458 | p = write_ptid (p, endp, ptid); | |
5459 | } | |
5460 | ||
5461 | return p; | |
5462 | } | |
5463 | ||
799a2abe PA |
5464 | /* Clear the thread's private info on resume. */ |
5465 | ||
5466 | static void | |
5467 | resume_clear_thread_private_info (struct thread_info *thread) | |
5468 | { | |
5469 | if (thread->priv != NULL) | |
5470 | { | |
5471 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5472 | thread->priv->watch_data_address = 0; | |
5473 | } | |
5474 | } | |
5475 | ||
e5ef252a PA |
5476 | /* Append a vCont continue-with-signal action for threads that have a |
5477 | non-zero stop signal. */ | |
5478 | ||
5479 | static char * | |
5480 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5481 | { | |
5482 | struct thread_info *thread; | |
5483 | ||
034f788c | 5484 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5485 | if (ptid_match (thread->ptid, ptid) |
5486 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5487 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5488 | { |
5489 | p = append_resumption (p, endp, thread->ptid, | |
5490 | 0, thread->suspend.stop_signal); | |
5491 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5492 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5493 | } |
5494 | ||
5495 | return p; | |
5496 | } | |
5497 | ||
506fb367 DJ |
5498 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5499 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5500 | resumed thread should be single-stepped and/or signalled. If PTID |
5501 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5502 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5503 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5504 | |
506fb367 DJ |
5505 | This function issues a strict subset of all possible vCont commands at the |
5506 | moment. */ | |
44eaed12 | 5507 | |
506fb367 | 5508 | static int |
2ea28649 | 5509 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5510 | { |
5511 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5512 | char *p; |
5513 | char *endp; | |
44eaed12 | 5514 | |
4082afcc | 5515 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5516 | remote_vcont_probe (rs); |
44eaed12 | 5517 | |
4082afcc | 5518 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5519 | return 0; |
44eaed12 | 5520 | |
82f73884 PA |
5521 | p = rs->buf; |
5522 | endp = rs->buf + get_remote_packet_size (); | |
5523 | ||
506fb367 DJ |
5524 | /* If we could generate a wider range of packets, we'd have to worry |
5525 | about overflowing BUF. Should there be a generic | |
5526 | "multi-part-packet" packet? */ | |
5527 | ||
0d8f58ca PA |
5528 | p += xsnprintf (p, endp - p, "vCont"); |
5529 | ||
79d7f229 | 5530 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5531 | { |
79d7f229 PA |
5532 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5533 | so we don't have any TID numbers the inferior will | |
5534 | understand. Make sure to only send forms that do not specify | |
5535 | a TID. */ | |
a9cbf802 | 5536 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5537 | } |
0d8f58ca | 5538 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5539 | { |
0d8f58ca PA |
5540 | /* Resume all threads (of all processes, or of a single |
5541 | process), with preference for INFERIOR_PTID. This assumes | |
5542 | inferior_ptid belongs to the set of all threads we are about | |
5543 | to resume. */ | |
a493e3e2 | 5544 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5545 | { |
0d8f58ca PA |
5546 | /* Step inferior_ptid, with or without signal. */ |
5547 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5548 | } |
0d8f58ca | 5549 | |
e5ef252a PA |
5550 | /* Also pass down any pending signaled resumption for other |
5551 | threads not the current. */ | |
5552 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5553 | ||
0d8f58ca | 5554 | /* And continue others without a signal. */ |
a493e3e2 | 5555 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5556 | } |
5557 | else | |
506fb367 DJ |
5558 | { |
5559 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5560 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5561 | } |
c906108c | 5562 | |
82f73884 PA |
5563 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5564 | putpkt (rs->buf); | |
506fb367 | 5565 | |
6efcd9a8 | 5566 | if (target_is_non_stop_p ()) |
74531fed PA |
5567 | { |
5568 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5569 | reply will be reported asynchronously by means of a `%Stop' | |
5570 | notification. */ | |
5571 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5572 | if (strcmp (rs->buf, "OK") != 0) | |
5573 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5574 | } | |
5575 | ||
506fb367 | 5576 | return 1; |
c906108c | 5577 | } |
43ff13b4 | 5578 | |
506fb367 DJ |
5579 | /* Tell the remote machine to resume. */ |
5580 | ||
43ff13b4 | 5581 | static void |
28439f5e | 5582 | remote_resume (struct target_ops *ops, |
2ea28649 | 5583 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5584 | { |
d01949b6 | 5585 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5586 | char *buf; |
799a2abe | 5587 | struct thread_info *thread; |
43ff13b4 | 5588 | |
722247f1 YQ |
5589 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5590 | (explained in remote-notif.c:handle_notification) so | |
5591 | remote_notif_process is not called. We need find a place where | |
5592 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5593 | before resuming inferior, because inferior was stopped and no RSP | |
5594 | traffic at that moment. */ | |
6efcd9a8 | 5595 | if (!target_is_non_stop_p ()) |
5965e028 | 5596 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5597 | |
b73be471 | 5598 | rs->last_sent_signal = siggnal; |
280ceea3 | 5599 | rs->last_sent_step = step; |
43ff13b4 | 5600 | |
506fb367 | 5601 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5602 | /* No reverse support (yet) for vCont. */ |
5603 | if (execution_direction != EXEC_REVERSE) | |
5604 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5605 | goto done; | |
506fb367 | 5606 | |
79d7f229 PA |
5607 | /* All other supported resume packets do use Hc, so set the continue |
5608 | thread. */ | |
5609 | if (ptid_equal (ptid, minus_one_ptid)) | |
5610 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5611 | else |
79d7f229 | 5612 | set_continue_thread (ptid); |
506fb367 | 5613 | |
799a2abe PA |
5614 | ALL_NON_EXITED_THREADS (thread) |
5615 | resume_clear_thread_private_info (thread); | |
5616 | ||
2e9f7625 | 5617 | buf = rs->buf; |
b2175913 MS |
5618 | if (execution_direction == EXEC_REVERSE) |
5619 | { | |
5620 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5621 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5622 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5623 | siggnal); |
40ab02ce | 5624 | |
4082afcc | 5625 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5626 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5627 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5628 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5629 | |
b2175913 MS |
5630 | strcpy (buf, step ? "bs" : "bc"); |
5631 | } | |
a493e3e2 | 5632 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5633 | { |
5634 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5635 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5636 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5637 | buf[3] = '\0'; |
5638 | } | |
5639 | else | |
c5aa993b | 5640 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5641 | |
44eaed12 | 5642 | putpkt (buf); |
43ff13b4 | 5643 | |
75c99385 | 5644 | done: |
2acceee2 | 5645 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5646 | with the event loop. NOTE: this is the one place where all the |
5647 | execution commands end up. We could alternatively do this in each | |
23860348 | 5648 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5649 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5650 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5651 | NOT asynchronously. */ |
362646f5 | 5652 | if (target_can_async_p ()) |
6a3753b3 | 5653 | target_async (1); |
e24a49d8 PA |
5654 | |
5655 | /* We've just told the target to resume. The remote server will | |
5656 | wait for the inferior to stop, and then send a stop reply. In | |
5657 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5658 | because the stub wouldn't be ready to process it. This applies |
5659 | only to the base all-stop protocol, however. In non-stop (which | |
5660 | only supports vCont), the stub replies with an "OK", and is | |
5661 | immediate able to process further serial input. */ | |
6efcd9a8 | 5662 | if (!target_is_non_stop_p ()) |
74531fed | 5663 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5664 | } |
c906108c | 5665 | \f |
43ff13b4 JM |
5666 | |
5667 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5668 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5669 | static void |
934b9bac | 5670 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5671 | { |
934b9bac | 5672 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5673 | } |
5674 | ||
23860348 | 5675 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5676 | static void |
934b9bac | 5677 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5678 | { |
934b9bac | 5679 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5680 | /* Note we need to go through gdb_call_async_signal_handler in order |
5681 | to wake up the event loop on Windows. */ | |
5682 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5683 | } |
5684 | ||
5685 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5686 | sent once. It will take effect the second time that the user sends | |
23860348 | 5687 | a ^C. */ |
43ff13b4 | 5688 | static void |
934b9bac | 5689 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5690 | { |
934b9bac | 5691 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5692 | /* See note in async_handle_remote_sigint. */ |
5693 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5694 | } |
5695 | ||
abc56d60 PA |
5696 | /* Implementation of to_check_pending_interrupt. */ |
5697 | ||
5698 | static void | |
5699 | remote_check_pending_interrupt (struct target_ops *self) | |
5700 | { | |
5701 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5702 | ||
5703 | if (async_signal_handler_is_marked (token)) | |
5704 | { | |
5705 | clear_async_signal_handler (token); | |
5706 | call_async_signal_handler (token); | |
5707 | } | |
5708 | } | |
5709 | ||
6426a772 | 5710 | /* Perform the real interruption of the target execution, in response |
23860348 | 5711 | to a ^C. */ |
c5aa993b | 5712 | static void |
fba45db2 | 5713 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5714 | { |
5715 | if (remote_debug) | |
248fd3bf | 5716 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5717 | |
de979965 | 5718 | target_interrupt (inferior_ptid); |
43ff13b4 JM |
5719 | } |
5720 | ||
0df8b418 | 5721 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5722 | up on the target alltogether. */ |
47e1ce27 | 5723 | static void |
fba45db2 | 5724 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5725 | { |
2df3850c | 5726 | if (remote_debug) |
248fd3bf | 5727 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5728 | |
5729 | interrupt_query (); | |
43ff13b4 JM |
5730 | } |
5731 | ||
5732 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5733 | stopped. */ |
6426a772 | 5734 | static void |
934b9bac | 5735 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5736 | { |
5737 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5738 | } |
5739 | ||
c906108c SS |
5740 | /* Send ^C to target to halt it. Target will respond, and send us a |
5741 | packet. */ | |
507f3c78 | 5742 | static void (*ofunc) (int); |
c906108c | 5743 | |
bfedc46a PA |
5744 | /* The command line interface's interrupt routine. This function is installed |
5745 | as a signal handler for SIGINT. The first time a user requests an | |
5746 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5747 | response from the target (it didn't stop when the user requested it), |
23860348 | 5748 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5749 | |
c906108c | 5750 | static void |
934b9bac | 5751 | sync_remote_interrupt (int signo) |
c906108c | 5752 | { |
23860348 | 5753 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5754 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5755 | |
934b9bac | 5756 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5757 | } |
5758 | ||
5759 | /* The user typed ^C twice. */ | |
5760 | ||
5761 | static void | |
934b9bac | 5762 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5763 | { |
5764 | signal (signo, ofunc); | |
934b9bac JK |
5765 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5766 | signal (signo, sync_remote_interrupt); | |
c906108c | 5767 | } |
7a292a7a | 5768 | |
74531fed PA |
5769 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5770 | thread, all threads of a remote process, or all threads of all | |
5771 | processes. */ | |
5772 | ||
5773 | static void | |
5774 | remote_stop_ns (ptid_t ptid) | |
5775 | { | |
5776 | struct remote_state *rs = get_remote_state (); | |
5777 | char *p = rs->buf; | |
5778 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5779 | |
4082afcc | 5780 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5781 | remote_vcont_probe (rs); |
5782 | ||
d458bd84 | 5783 | if (!rs->supports_vCont.t) |
74531fed PA |
5784 | error (_("Remote server does not support stopping threads")); |
5785 | ||
f91d3df5 PA |
5786 | if (ptid_equal (ptid, minus_one_ptid) |
5787 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5788 | p += xsnprintf (p, endp - p, "vCont;t"); |
5789 | else | |
5790 | { | |
5791 | ptid_t nptid; | |
5792 | ||
74531fed PA |
5793 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5794 | ||
5795 | if (ptid_is_pid (ptid)) | |
5796 | /* All (-1) threads of process. */ | |
ba348170 | 5797 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5798 | else |
5799 | { | |
5800 | /* Small optimization: if we already have a stop reply for | |
5801 | this thread, no use in telling the stub we want this | |
5802 | stopped. */ | |
5803 | if (peek_stop_reply (ptid)) | |
5804 | return; | |
5805 | ||
5806 | nptid = ptid; | |
5807 | } | |
5808 | ||
a9cbf802 | 5809 | write_ptid (p, endp, nptid); |
74531fed PA |
5810 | } |
5811 | ||
5812 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5813 | come in asynchronously by notification. */ | |
5814 | putpkt (rs->buf); | |
5815 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5816 | if (strcmp (rs->buf, "OK") != 0) | |
5817 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5818 | } | |
5819 | ||
bfedc46a PA |
5820 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5821 | interrupt the remote target. It is undefined which thread of which | |
5822 | process reports the interrupt. */ | |
74531fed PA |
5823 | |
5824 | static void | |
de979965 | 5825 | remote_interrupt_as (void) |
74531fed PA |
5826 | { |
5827 | struct remote_state *rs = get_remote_state (); | |
5828 | ||
3a29589a DJ |
5829 | rs->ctrlc_pending_p = 1; |
5830 | ||
74531fed PA |
5831 | /* If the inferior is stopped already, but the core didn't know |
5832 | about it yet, just ignore the request. The cached wait status | |
5833 | will be collected in remote_wait. */ | |
5834 | if (rs->cached_wait_status) | |
5835 | return; | |
5836 | ||
9a7071a8 JB |
5837 | /* Send interrupt_sequence to remote target. */ |
5838 | send_interrupt_sequence (); | |
74531fed PA |
5839 | } |
5840 | ||
de979965 PA |
5841 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
5842 | the remote target. It is undefined which thread of which process | |
5843 | reports the interrupt. Returns true if the packet is supported by | |
5844 | the server, false otherwise. */ | |
5845 | ||
5846 | static int | |
5847 | remote_interrupt_ns (void) | |
5848 | { | |
5849 | struct remote_state *rs = get_remote_state (); | |
5850 | char *p = rs->buf; | |
5851 | char *endp = rs->buf + get_remote_packet_size (); | |
5852 | ||
5853 | xsnprintf (p, endp - p, "vCtrlC"); | |
5854 | ||
5855 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5856 | come in asynchronously by notification. */ | |
5857 | putpkt (rs->buf); | |
5858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5859 | ||
5860 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
5861 | { | |
5862 | case PACKET_OK: | |
5863 | break; | |
5864 | case PACKET_UNKNOWN: | |
5865 | return 0; | |
5866 | case PACKET_ERROR: | |
5867 | error (_("Interrupting target failed: %s"), rs->buf); | |
5868 | } | |
5869 | ||
5870 | return 1; | |
5871 | } | |
5872 | ||
bfedc46a | 5873 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5874 | |
c906108c | 5875 | static void |
1eab8a48 | 5876 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5877 | { |
7a292a7a | 5878 | if (remote_debug) |
0f71a2f6 | 5879 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5880 | |
6efcd9a8 | 5881 | if (target_is_non_stop_p ()) |
74531fed | 5882 | remote_stop_ns (ptid); |
c906108c | 5883 | else |
bfedc46a PA |
5884 | { |
5885 | /* We don't currently have a way to transparently pause the | |
5886 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 5887 | remote_interrupt_as (); |
bfedc46a PA |
5888 | } |
5889 | } | |
5890 | ||
5891 | /* Implement the to_interrupt function for the remote targets. */ | |
5892 | ||
5893 | static void | |
5894 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5895 | { | |
5896 | if (remote_debug) | |
5897 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5898 | ||
de979965 | 5899 | if (non_stop) |
bfedc46a | 5900 | { |
de979965 | 5901 | /* In non-stop mode, we always stop with no signal instead. */ |
bfedc46a PA |
5902 | remote_stop_ns (ptid); |
5903 | } | |
5904 | else | |
de979965 PA |
5905 | { |
5906 | /* In all-stop, we emulate ^C-ing the remote target's | |
5907 | terminal. */ | |
5908 | if (target_is_non_stop_p ()) | |
5909 | { | |
5910 | if (!remote_interrupt_ns ()) | |
5911 | { | |
5912 | /* No support for ^C-ing the remote target. Stop it | |
5913 | (with no signal) instead. */ | |
5914 | remote_stop_ns (ptid); | |
5915 | } | |
5916 | } | |
5917 | else | |
5918 | remote_interrupt_as (); | |
5919 | } | |
c906108c SS |
5920 | } |
5921 | ||
5922 | /* Ask the user what to do when an interrupt is received. */ | |
5923 | ||
5924 | static void | |
fba45db2 | 5925 | interrupt_query (void) |
c906108c | 5926 | { |
abc56d60 PA |
5927 | struct remote_state *rs = get_remote_state (); |
5928 | struct cleanup *old_chain; | |
5929 | ||
5930 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5931 | target_terminal_ours (); |
5932 | ||
abc56d60 | 5933 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5934 | { |
abc56d60 PA |
5935 | if (query (_("The target is not responding to interrupt requests.\n" |
5936 | "Stop debugging it? "))) | |
74531fed | 5937 | { |
78a095c3 | 5938 | remote_unpush_target (); |
abc56d60 | 5939 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5940 | } |
5941 | } | |
abc56d60 PA |
5942 | else |
5943 | { | |
5944 | if (query (_("Interrupted while waiting for the program.\n" | |
5945 | "Give up waiting? "))) | |
5946 | quit (); | |
5947 | } | |
c906108c | 5948 | |
abc56d60 | 5949 | do_cleanups (old_chain); |
c906108c SS |
5950 | } |
5951 | ||
6426a772 JM |
5952 | /* Enable/disable target terminal ownership. Most targets can use |
5953 | terminal groups to control terminal ownership. Remote targets are | |
5954 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5955 | is required. */ |
6426a772 JM |
5956 | |
5957 | static void | |
d2f640d4 | 5958 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5959 | { |
c6ebd6cf | 5960 | if (!target_async_permitted) |
75c99385 PA |
5961 | /* Nothing to do. */ |
5962 | return; | |
5963 | ||
d9d2d8b6 PA |
5964 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5965 | idempotent. The event-loop GDB talking to an asynchronous target | |
5966 | with a synchronous command calls this function from both | |
5967 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5968 | transfer the terminal to the target when it shouldn't this guard | |
5969 | can go away. */ | |
6426a772 JM |
5970 | if (!remote_async_terminal_ours_p) |
5971 | return; | |
5972 | delete_file_handler (input_fd); | |
5973 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5974 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5975 | /* NOTE: At this point we could also register our selves as the |
5976 | recipient of all input. Any characters typed could then be | |
23860348 | 5977 | passed on down to the target. */ |
6426a772 JM |
5978 | } |
5979 | ||
5980 | static void | |
e3594fd1 | 5981 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5982 | { |
c6ebd6cf | 5983 | if (!target_async_permitted) |
75c99385 PA |
5984 | /* Nothing to do. */ |
5985 | return; | |
5986 | ||
5987 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5988 | if (remote_async_terminal_ours_p) |
5989 | return; | |
934b9bac | 5990 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5991 | add_file_handler (input_fd, stdin_event_handler, 0); |
5992 | remote_async_terminal_ours_p = 1; | |
5993 | } | |
5994 | ||
176a6961 | 5995 | static void |
917317f4 | 5996 | remote_console_output (char *msg) |
c906108c SS |
5997 | { |
5998 | char *p; | |
5999 | ||
c5aa993b | 6000 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6001 | { |
6002 | char tb[2]; | |
6003 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6004 | |
c906108c SS |
6005 | tb[0] = c; |
6006 | tb[1] = 0; | |
43ff13b4 | 6007 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6008 | } |
00db5b94 PA |
6009 | gdb_flush (gdb_stdtarg); |
6010 | } | |
74531fed PA |
6011 | |
6012 | typedef struct cached_reg | |
6013 | { | |
6014 | int num; | |
6015 | gdb_byte data[MAX_REGISTER_SIZE]; | |
6016 | } cached_reg_t; | |
6017 | ||
6018 | DEF_VEC_O(cached_reg_t); | |
6019 | ||
722247f1 | 6020 | typedef struct stop_reply |
74531fed | 6021 | { |
722247f1 | 6022 | struct notif_event base; |
74531fed | 6023 | |
722247f1 | 6024 | /* The identifier of the thread about this event */ |
74531fed PA |
6025 | ptid_t ptid; |
6026 | ||
340e3c99 | 6027 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6028 | connection, represented by a remote_state object, is closed, |
6029 | all the associated stop_reply events should be released. */ | |
6030 | struct remote_state *rs; | |
6031 | ||
74531fed PA |
6032 | struct target_waitstatus ws; |
6033 | ||
15148d6a PA |
6034 | /* Expedited registers. This makes remote debugging a bit more |
6035 | efficient for those targets that provide critical registers as | |
6036 | part of their normal status mechanism (as another roundtrip to | |
6037 | fetch them is avoided). */ | |
74531fed PA |
6038 | VEC(cached_reg_t) *regcache; |
6039 | ||
f7e6eed5 PA |
6040 | enum target_stop_reason stop_reason; |
6041 | ||
74531fed PA |
6042 | CORE_ADDR watch_data_address; |
6043 | ||
dc146f7c | 6044 | int core; |
722247f1 | 6045 | } *stop_reply_p; |
a744cf53 | 6046 | |
722247f1 YQ |
6047 | DECLARE_QUEUE_P (stop_reply_p); |
6048 | DEFINE_QUEUE_P (stop_reply_p); | |
6049 | /* The list of already fetched and acknowledged stop events. This | |
6050 | queue is used for notification Stop, and other notifications | |
6051 | don't need queue for their events, because the notification events | |
6052 | of Stop can't be consumed immediately, so that events should be | |
6053 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6054 | time. Other notifications can consume their events immediately, | |
6055 | so queue is not needed for them. */ | |
6056 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6057 | |
6058 | static void | |
6059 | stop_reply_xfree (struct stop_reply *r) | |
6060 | { | |
f48ff2a7 | 6061 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6062 | } |
6063 | ||
221e1a37 PA |
6064 | /* Return the length of the stop reply queue. */ |
6065 | ||
6066 | static int | |
6067 | stop_reply_queue_length (void) | |
6068 | { | |
6069 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6070 | } | |
6071 | ||
722247f1 YQ |
6072 | static void |
6073 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6074 | struct notif_event *event) | |
6075 | { | |
6076 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6077 | } | |
6078 | ||
6079 | static void | |
6080 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6081 | struct notif_event *event) | |
6082 | { | |
6083 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6084 | ||
6085 | /* acknowledge */ | |
6086 | putpkt ((char *) self->ack_command); | |
6087 | ||
6088 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6089 | /* We got an unknown stop reply. */ | |
6090 | error (_("Unknown stop reply")); | |
6091 | ||
6092 | push_stop_reply (stop_reply); | |
6093 | } | |
6094 | ||
6095 | static int | |
6096 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6097 | { | |
6098 | /* We can't get pending events in remote_notif_process for | |
6099 | notification stop, and we have to do this in remote_wait_ns | |
6100 | instead. If we fetch all queued events from stub, remote stub | |
6101 | may exit and we have no chance to process them back in | |
6102 | remote_wait_ns. */ | |
6103 | mark_async_event_handler (remote_async_inferior_event_token); | |
6104 | return 0; | |
6105 | } | |
6106 | ||
6107 | static void | |
6108 | stop_reply_dtr (struct notif_event *event) | |
6109 | { | |
6110 | struct stop_reply *r = (struct stop_reply *) event; | |
6111 | ||
6112 | VEC_free (cached_reg_t, r->regcache); | |
6113 | } | |
6114 | ||
6115 | static struct notif_event * | |
6116 | remote_notif_stop_alloc_reply (void) | |
6117 | { | |
8d749320 SM |
6118 | /* We cast to a pointer to the "base class". */ |
6119 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6120 | |
6121 | r->dtr = stop_reply_dtr; | |
6122 | ||
6123 | return r; | |
6124 | } | |
6125 | ||
6126 | /* A client of notification Stop. */ | |
6127 | ||
6128 | struct notif_client notif_client_stop = | |
6129 | { | |
6130 | "Stop", | |
6131 | "vStopped", | |
6132 | remote_notif_stop_parse, | |
6133 | remote_notif_stop_ack, | |
6134 | remote_notif_stop_can_get_pending_events, | |
6135 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6136 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6137 | }; |
6138 | ||
6139 | /* A parameter to pass data in and out. */ | |
6140 | ||
6141 | struct queue_iter_param | |
6142 | { | |
6143 | void *input; | |
6144 | struct stop_reply *output; | |
6145 | }; | |
6146 | ||
cbb8991c DB |
6147 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
6148 | the pid of the process that owns the threads we want to check, or | |
6149 | -1 if we want to check all threads. */ | |
6150 | ||
6151 | static int | |
6152 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6153 | ptid_t thread_ptid) | |
6154 | { | |
6155 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6156 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6157 | { | |
6158 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6159 | return 1; | |
6160 | } | |
6161 | ||
6162 | return 0; | |
6163 | } | |
6164 | ||
6165 | /* Check whether EVENT is a fork event, and if it is, remove the | |
6166 | fork child from the context list passed in DATA. */ | |
6167 | ||
6168 | static int | |
6169 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6170 | QUEUE_ITER (stop_reply_p) *iter, | |
6171 | stop_reply_p event, | |
6172 | void *data) | |
6173 | { | |
19ba03f4 SM |
6174 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6175 | struct threads_listing_context *context | |
6176 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6177 | |
6178 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6179 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6180 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6181 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6182 | |
6183 | return 1; | |
6184 | } | |
6185 | ||
6186 | /* If CONTEXT contains any fork child threads that have not been | |
6187 | reported yet, remove them from the CONTEXT list. If such a | |
6188 | thread exists it is because we are stopped at a fork catchpoint | |
6189 | and have not yet called follow_fork, which will set up the | |
6190 | host-side data structures for the new process. */ | |
6191 | ||
6192 | static void | |
6193 | remove_new_fork_children (struct threads_listing_context *context) | |
6194 | { | |
6195 | struct thread_info * thread; | |
6196 | int pid = -1; | |
6197 | struct notif_client *notif = ¬if_client_stop; | |
6198 | struct queue_iter_param param; | |
6199 | ||
6200 | /* For any threads stopped at a fork event, remove the corresponding | |
6201 | fork child threads from the CONTEXT list. */ | |
6202 | ALL_NON_EXITED_THREADS (thread) | |
6203 | { | |
4041ed77 DB |
6204 | struct target_waitstatus *ws; |
6205 | ||
6206 | if (thread->suspend.waitstatus_pending_p) | |
6207 | ws = &thread->suspend.waitstatus; | |
6208 | else | |
6209 | ws = &thread->pending_follow; | |
cbb8991c DB |
6210 | |
6211 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6212 | { | |
6213 | threads_listing_context_remove (ws, context); | |
6214 | } | |
6215 | } | |
6216 | ||
6217 | /* Check for any pending fork events (not reported or processed yet) | |
6218 | in process PID and remove those fork child threads from the | |
6219 | CONTEXT list as well. */ | |
6220 | remote_notif_get_pending_events (notif); | |
6221 | param.input = context; | |
6222 | param.output = NULL; | |
6223 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6224 | remove_child_of_pending_fork, ¶m); | |
6225 | } | |
6226 | ||
f48ff2a7 YQ |
6227 | /* Remove stop replies in the queue if its pid is equal to the given |
6228 | inferior's pid. */ | |
722247f1 YQ |
6229 | |
6230 | static int | |
f48ff2a7 YQ |
6231 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6232 | QUEUE_ITER (stop_reply_p) *iter, | |
6233 | stop_reply_p event, | |
6234 | void *data) | |
722247f1 | 6235 | { |
19ba03f4 SM |
6236 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6237 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6238 | |
f48ff2a7 | 6239 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6240 | { |
6241 | stop_reply_xfree (event); | |
6242 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6243 | } | |
6244 | ||
6245 | return 1; | |
6246 | } | |
6247 | ||
f48ff2a7 | 6248 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6249 | |
74531fed | 6250 | static void |
5f4cf0bb | 6251 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6252 | { |
722247f1 | 6253 | struct queue_iter_param param; |
f48ff2a7 YQ |
6254 | struct stop_reply *reply; |
6255 | struct remote_state *rs = get_remote_state (); | |
6256 | struct remote_notif_state *rns = rs->notif_state; | |
6257 | ||
6258 | /* This function can be notified when an inferior exists. When the | |
6259 | target is not remote, the notification state is NULL. */ | |
6260 | if (rs->remote_desc == NULL) | |
6261 | return; | |
6262 | ||
6263 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6264 | |
74531fed | 6265 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6266 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6267 | { |
722247f1 | 6268 | stop_reply_xfree (reply); |
f48ff2a7 | 6269 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6270 | } |
c906108c | 6271 | |
722247f1 YQ |
6272 | param.input = inf; |
6273 | param.output = NULL; | |
74531fed PA |
6274 | /* Discard the stop replies we have already pulled with |
6275 | vStopped. */ | |
722247f1 | 6276 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6277 | remove_stop_reply_for_inferior, ¶m); |
6278 | } | |
6279 | ||
bcc75809 YQ |
6280 | /* If its remote state is equal to the given remote state, |
6281 | remove EVENT from the stop reply queue. */ | |
6282 | ||
6283 | static int | |
6284 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6285 | QUEUE_ITER (stop_reply_p) *iter, | |
6286 | stop_reply_p event, | |
6287 | void *data) | |
6288 | { | |
19ba03f4 SM |
6289 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6290 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6291 | |
6292 | if (event->rs == rs) | |
6293 | { | |
6294 | stop_reply_xfree (event); | |
6295 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6296 | } | |
6297 | ||
6298 | return 1; | |
6299 | } | |
6300 | ||
6301 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6302 | |
6303 | static void | |
bcc75809 | 6304 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6305 | { |
6306 | struct queue_iter_param param; | |
6307 | ||
bcc75809 | 6308 | param.input = rs; |
f48ff2a7 YQ |
6309 | param.output = NULL; |
6310 | /* Discard the stop replies we have already pulled with | |
6311 | vStopped. */ | |
6312 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6313 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6314 | } |
74531fed | 6315 | |
722247f1 YQ |
6316 | /* A parameter to pass data in and out. */ |
6317 | ||
6318 | static int | |
6319 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6320 | QUEUE_ITER (stop_reply_p) *iter, | |
6321 | stop_reply_p event, | |
6322 | void *data) | |
6323 | { | |
19ba03f4 SM |
6324 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6325 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6326 | |
6327 | if (ptid_match (event->ptid, *ptid)) | |
6328 | { | |
6329 | param->output = event; | |
6330 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6331 | return 0; | |
c8e38a49 | 6332 | } |
722247f1 YQ |
6333 | |
6334 | return 1; | |
74531fed | 6335 | } |
43ff13b4 | 6336 | |
722247f1 YQ |
6337 | /* Remove the first reply in 'stop_reply_queue' which matches |
6338 | PTID. */ | |
2e9f7625 | 6339 | |
722247f1 YQ |
6340 | static struct stop_reply * |
6341 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6342 | { |
722247f1 YQ |
6343 | struct queue_iter_param param; |
6344 | ||
6345 | param.input = &ptid; | |
6346 | param.output = NULL; | |
6347 | ||
6348 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6349 | remote_notif_remove_once_on_match, ¶m); | |
6350 | if (notif_debug) | |
6351 | fprintf_unfiltered (gdb_stdlog, | |
6352 | "notif: discard queued event: 'Stop' in %s\n", | |
6353 | target_pid_to_str (ptid)); | |
a744cf53 | 6354 | |
722247f1 | 6355 | return param.output; |
74531fed | 6356 | } |
75c99385 | 6357 | |
74531fed PA |
6358 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6359 | remove it from the queue, and return it. Returns NULL if none is | |
6360 | found. If there are still queued events left to process, tell the | |
6361 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6362 | |
74531fed PA |
6363 | static struct stop_reply * |
6364 | queued_stop_reply (ptid_t ptid) | |
6365 | { | |
722247f1 | 6366 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6367 | |
722247f1 | 6368 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6369 | /* There's still at least an event left. */ |
6370 | mark_async_event_handler (remote_async_inferior_event_token); | |
6371 | ||
722247f1 | 6372 | return r; |
74531fed PA |
6373 | } |
6374 | ||
6375 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6376 | know that we now have at least one queued event left to pass to the | |
6377 | core side, tell the event loop to get back to target_wait soon. */ | |
6378 | ||
6379 | static void | |
6380 | push_stop_reply (struct stop_reply *new_event) | |
6381 | { | |
722247f1 | 6382 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6383 | |
722247f1 YQ |
6384 | if (notif_debug) |
6385 | fprintf_unfiltered (gdb_stdlog, | |
6386 | "notif: push 'Stop' %s to queue %d\n", | |
6387 | target_pid_to_str (new_event->ptid), | |
6388 | QUEUE_length (stop_reply_p, | |
6389 | stop_reply_queue)); | |
74531fed PA |
6390 | |
6391 | mark_async_event_handler (remote_async_inferior_event_token); | |
6392 | } | |
6393 | ||
722247f1 YQ |
6394 | static int |
6395 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6396 | QUEUE_ITER (stop_reply_p) *iter, | |
6397 | struct stop_reply *event, | |
6398 | void *data) | |
6399 | { | |
19ba03f4 | 6400 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6401 | |
6402 | return !(ptid_equal (*ptid, event->ptid) | |
6403 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6404 | } | |
6405 | ||
74531fed PA |
6406 | /* Returns true if we have a stop reply for PTID. */ |
6407 | ||
6408 | static int | |
6409 | peek_stop_reply (ptid_t ptid) | |
6410 | { | |
722247f1 YQ |
6411 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6412 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6413 | } |
6414 | ||
26d56a93 SL |
6415 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6416 | starting with P and ending with PEND matches PREFIX. */ | |
6417 | ||
6418 | static int | |
6419 | strprefix (const char *p, const char *pend, const char *prefix) | |
6420 | { | |
6421 | for ( ; p < pend; p++, prefix++) | |
6422 | if (*p != *prefix) | |
6423 | return 0; | |
6424 | return *prefix == '\0'; | |
6425 | } | |
6426 | ||
74531fed PA |
6427 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6428 | result is stored in EVENT, or throws an error. */ | |
6429 | ||
6430 | static void | |
6431 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6432 | { | |
6433 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6434 | ULONGEST addr; | |
6435 | char *p; | |
94585166 | 6436 | int skipregs = 0; |
74531fed PA |
6437 | |
6438 | event->ptid = null_ptid; | |
bcc75809 | 6439 | event->rs = get_remote_state (); |
74531fed PA |
6440 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6441 | event->ws.value.integer = 0; | |
f7e6eed5 | 6442 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6443 | event->regcache = NULL; |
dc146f7c | 6444 | event->core = -1; |
74531fed PA |
6445 | |
6446 | switch (buf[0]) | |
6447 | { | |
6448 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6449 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6450 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6451 | ss = signal number | |
6452 | n... = register number | |
6453 | r... = register contents | |
6454 | */ | |
6455 | ||
6456 | p = &buf[3]; /* after Txx */ | |
6457 | while (*p) | |
6458 | { | |
6459 | char *p1; | |
cea39f65 | 6460 | int fieldsize; |
43ff13b4 | 6461 | |
1f10ba14 PA |
6462 | p1 = strchr (p, ':'); |
6463 | if (p1 == NULL) | |
6464 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6465 | Packet: '%s'\n"), | |
6466 | p, buf); | |
6467 | if (p == p1) | |
6468 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6469 | Packet: '%s'\n"), | |
6470 | p, buf); | |
3c3bea1c | 6471 | |
1f10ba14 PA |
6472 | /* Some "registers" are actually extended stop information. |
6473 | Note if you're adding a new entry here: GDB 7.9 and | |
6474 | earlier assume that all register "numbers" that start | |
6475 | with an hex digit are real register numbers. Make sure | |
6476 | the server only sends such a packet if it knows the | |
6477 | client understands it. */ | |
c8e38a49 | 6478 | |
26d56a93 | 6479 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6480 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6481 | else if (strprefix (p, p1, "syscall_entry")) |
6482 | { | |
6483 | ULONGEST sysno; | |
6484 | ||
6485 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6486 | p = unpack_varlen_hex (++p1, &sysno); | |
6487 | event->ws.value.syscall_number = (int) sysno; | |
6488 | } | |
6489 | else if (strprefix (p, p1, "syscall_return")) | |
6490 | { | |
6491 | ULONGEST sysno; | |
6492 | ||
6493 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6494 | p = unpack_varlen_hex (++p1, &sysno); | |
6495 | event->ws.value.syscall_number = (int) sysno; | |
6496 | } | |
26d56a93 SL |
6497 | else if (strprefix (p, p1, "watch") |
6498 | || strprefix (p, p1, "rwatch") | |
6499 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6500 | { |
f7e6eed5 | 6501 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6502 | p = unpack_varlen_hex (++p1, &addr); |
6503 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6504 | } |
26d56a93 | 6505 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6506 | { |
6507 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6508 | ||
6509 | /* Make sure the stub doesn't forget to indicate support | |
6510 | with qSupported. */ | |
6511 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6512 | error (_("Unexpected swbreak stop reason")); | |
6513 | ||
6514 | /* The value part is documented as "must be empty", | |
6515 | though we ignore it, in case we ever decide to make | |
6516 | use of it in a backward compatible way. */ | |
8424cc97 | 6517 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6518 | } |
26d56a93 | 6519 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6520 | { |
6521 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6522 | ||
6523 | /* Make sure the stub doesn't forget to indicate support | |
6524 | with qSupported. */ | |
6525 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6526 | error (_("Unexpected hwbreak stop reason")); | |
6527 | ||
6528 | /* See above. */ | |
8424cc97 | 6529 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 6530 | } |
26d56a93 | 6531 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6532 | { |
1f10ba14 | 6533 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 6534 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6535 | } |
26d56a93 | 6536 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6537 | { |
6538 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6539 | /* p1 will indicate "begin" or "end", but it makes | |
6540 | no difference for now, so ignore it. */ | |
8424cc97 | 6541 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6542 | } |
26d56a93 | 6543 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6544 | { |
6545 | ULONGEST c; | |
a744cf53 | 6546 | |
1f10ba14 PA |
6547 | p = unpack_varlen_hex (++p1, &c); |
6548 | event->core = c; | |
cea39f65 | 6549 | } |
26d56a93 | 6550 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6551 | { |
6552 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6553 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6554 | } | |
26d56a93 | 6555 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6556 | { |
6557 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6558 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6559 | } | |
26d56a93 | 6560 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6561 | { |
6562 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 6563 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 6564 | } |
6ab24463 | 6565 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6566 | { |
6567 | ULONGEST ignored; | |
6568 | char pathname[PATH_MAX]; | |
6569 | int pathlen; | |
6570 | ||
6571 | /* Determine the length of the execd pathname. */ | |
6572 | p = unpack_varlen_hex (++p1, &ignored); | |
6573 | pathlen = (p - p1) / 2; | |
6574 | ||
6575 | /* Save the pathname for event reporting and for | |
6576 | the next run command. */ | |
6577 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6578 | pathname[pathlen] = '\0'; | |
6579 | ||
6580 | /* This is freed during event handling. */ | |
6581 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6582 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6583 | ||
6584 | /* Skip the registers included in this packet, since | |
6585 | they may be for an architecture different from the | |
6586 | one used by the original program. */ | |
6587 | skipregs = 1; | |
6588 | } | |
65706a29 PA |
6589 | else if (strprefix (p, p1, "create")) |
6590 | { | |
6591 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 6592 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 6593 | } |
cea39f65 MS |
6594 | else |
6595 | { | |
1f10ba14 PA |
6596 | ULONGEST pnum; |
6597 | char *p_temp; | |
6598 | ||
94585166 DB |
6599 | if (skipregs) |
6600 | { | |
8424cc97 | 6601 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
6602 | p++; |
6603 | continue; | |
6604 | } | |
6605 | ||
1f10ba14 PA |
6606 | /* Maybe a real ``P'' register number. */ |
6607 | p_temp = unpack_varlen_hex (p, &pnum); | |
6608 | /* If the first invalid character is the colon, we got a | |
6609 | register number. Otherwise, it's an unknown stop | |
6610 | reason. */ | |
6611 | if (p_temp == p1) | |
6612 | { | |
6613 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6614 | cached_reg_t cached_reg; | |
43ff13b4 | 6615 | |
1f10ba14 PA |
6616 | if (reg == NULL) |
6617 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6618 | Packet: '%s'\n"), |
1f10ba14 | 6619 | hex_string (pnum), p, buf); |
c8e38a49 | 6620 | |
1f10ba14 | 6621 | cached_reg.num = reg->regnum; |
4100683b | 6622 | |
1f10ba14 PA |
6623 | p = p1 + 1; |
6624 | fieldsize = hex2bin (p, cached_reg.data, | |
6625 | register_size (target_gdbarch (), | |
6626 | reg->regnum)); | |
6627 | p += 2 * fieldsize; | |
6628 | if (fieldsize < register_size (target_gdbarch (), | |
6629 | reg->regnum)) | |
6630 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6631 | |
1f10ba14 PA |
6632 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6633 | } | |
6634 | else | |
6635 | { | |
6636 | /* Not a number. Silently skip unknown optional | |
6637 | info. */ | |
8424cc97 | 6638 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 6639 | } |
cea39f65 | 6640 | } |
c8e38a49 | 6641 | |
cea39f65 MS |
6642 | if (*p != ';') |
6643 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6644 | buf, p); | |
6645 | ++p; | |
6646 | } | |
5b5596ff PA |
6647 | |
6648 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6649 | break; | |
6650 | ||
c8e38a49 PA |
6651 | /* fall through */ |
6652 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6653 | { |
6654 | int sig; | |
6655 | ||
6656 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6657 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6658 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6659 | event->ws.value.sig = (enum gdb_signal) sig; | |
6660 | else | |
6661 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6662 | } | |
c8e38a49 | 6663 | break; |
65706a29 PA |
6664 | case 'w': /* Thread exited. */ |
6665 | { | |
6666 | char *p; | |
6667 | ULONGEST value; | |
6668 | ||
6669 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
6670 | p = unpack_varlen_hex (&buf[1], &value); | |
6671 | event->ws.value.integer = value; | |
6672 | if (*p != ';') | |
6673 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 6674 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
6675 | break; |
6676 | } | |
c8e38a49 PA |
6677 | case 'W': /* Target exited. */ |
6678 | case 'X': | |
6679 | { | |
6680 | char *p; | |
6681 | int pid; | |
6682 | ULONGEST value; | |
82f73884 | 6683 | |
c8e38a49 PA |
6684 | /* GDB used to accept only 2 hex chars here. Stubs should |
6685 | only send more if they detect GDB supports multi-process | |
6686 | support. */ | |
6687 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6688 | |
c8e38a49 PA |
6689 | if (buf[0] == 'W') |
6690 | { | |
6691 | /* The remote process exited. */ | |
74531fed PA |
6692 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6693 | event->ws.value.integer = value; | |
c8e38a49 PA |
6694 | } |
6695 | else | |
6696 | { | |
6697 | /* The remote process exited with a signal. */ | |
74531fed | 6698 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6699 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6700 | event->ws.value.sig = (enum gdb_signal) value; | |
6701 | else | |
6702 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6703 | } |
82f73884 | 6704 | |
c8e38a49 PA |
6705 | /* If no process is specified, assume inferior_ptid. */ |
6706 | pid = ptid_get_pid (inferior_ptid); | |
6707 | if (*p == '\0') | |
6708 | ; | |
6709 | else if (*p == ';') | |
6710 | { | |
6711 | p++; | |
6712 | ||
0b24eb2d | 6713 | if (*p == '\0') |
82f73884 | 6714 | ; |
61012eef | 6715 | else if (startswith (p, "process:")) |
82f73884 | 6716 | { |
c8e38a49 | 6717 | ULONGEST upid; |
a744cf53 | 6718 | |
c8e38a49 PA |
6719 | p += sizeof ("process:") - 1; |
6720 | unpack_varlen_hex (p, &upid); | |
6721 | pid = upid; | |
82f73884 PA |
6722 | } |
6723 | else | |
6724 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6725 | } |
c8e38a49 PA |
6726 | else |
6727 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6728 | event->ptid = pid_to_ptid (pid); |
6729 | } | |
6730 | break; | |
f2faf941 PA |
6731 | case 'N': |
6732 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
6733 | event->ptid = minus_one_ptid; | |
6734 | break; | |
74531fed PA |
6735 | } |
6736 | ||
6efcd9a8 | 6737 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
6738 | error (_("No process or thread specified in stop reply: %s"), buf); |
6739 | } | |
6740 | ||
722247f1 YQ |
6741 | /* When the stub wants to tell GDB about a new notification reply, it |
6742 | sends a notification (%Stop, for example). Those can come it at | |
6743 | any time, hence, we have to make sure that any pending | |
6744 | putpkt/getpkt sequence we're making is finished, before querying | |
6745 | the stub for more events with the corresponding ack command | |
6746 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6747 | immediately upon receiving the notification, something like this | |
6748 | could happen: | |
74531fed PA |
6749 | |
6750 | 1.1) --> Hg 1 | |
6751 | 1.2) <-- OK | |
6752 | 1.3) --> g | |
6753 | 1.4) <-- %Stop | |
6754 | 1.5) --> vStopped | |
6755 | 1.6) <-- (registers reply to step #1.3) | |
6756 | ||
6757 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6758 | query. | |
6759 | ||
796cb314 | 6760 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6761 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6762 | doing whatever we were doing: | |
6763 | ||
6764 | 2.1) --> Hg 1 | |
6765 | 2.2) <-- OK | |
6766 | 2.3) --> g | |
6767 | 2.4) <-- %Stop | |
6768 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6769 | 2.5) <-- (registers reply to step #2.3) | |
6770 | ||
6771 | Eventualy after step #2.5, we return to the event loop, which | |
6772 | notices there's an event on the | |
6773 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6774 | associated callback --- the function below. At this point, we're | |
6775 | always safe to start a vStopped sequence. : | |
6776 | ||
6777 | 2.6) --> vStopped | |
6778 | 2.7) <-- T05 thread:2 | |
6779 | 2.8) --> vStopped | |
6780 | 2.9) --> OK | |
6781 | */ | |
6782 | ||
722247f1 YQ |
6783 | void |
6784 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6785 | { |
6786 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6787 | |
f48ff2a7 | 6788 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6789 | { |
722247f1 YQ |
6790 | if (notif_debug) |
6791 | fprintf_unfiltered (gdb_stdlog, | |
6792 | "notif: process: '%s' ack pending event\n", | |
6793 | nc->name); | |
74531fed | 6794 | |
722247f1 | 6795 | /* acknowledge */ |
f48ff2a7 YQ |
6796 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6797 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6798 | |
6799 | while (1) | |
6800 | { | |
6801 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6802 | if (strcmp (rs->buf, "OK") == 0) | |
6803 | break; | |
6804 | else | |
722247f1 | 6805 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6806 | } |
6807 | } | |
722247f1 YQ |
6808 | else |
6809 | { | |
6810 | if (notif_debug) | |
6811 | fprintf_unfiltered (gdb_stdlog, | |
6812 | "notif: process: '%s' no pending reply\n", | |
6813 | nc->name); | |
6814 | } | |
74531fed PA |
6815 | } |
6816 | ||
74531fed PA |
6817 | /* Called when it is decided that STOP_REPLY holds the info of the |
6818 | event that is to be returned to the core. This function always | |
6819 | destroys STOP_REPLY. */ | |
6820 | ||
6821 | static ptid_t | |
6822 | process_stop_reply (struct stop_reply *stop_reply, | |
6823 | struct target_waitstatus *status) | |
6824 | { | |
6825 | ptid_t ptid; | |
6826 | ||
6827 | *status = stop_reply->ws; | |
6828 | ptid = stop_reply->ptid; | |
6829 | ||
6830 | /* If no thread/process was reported by the stub, assume the current | |
6831 | inferior. */ | |
6832 | if (ptid_equal (ptid, null_ptid)) | |
6833 | ptid = inferior_ptid; | |
6834 | ||
5f3563ea | 6835 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
6836 | && status->kind != TARGET_WAITKIND_SIGNALLED |
6837 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 6838 | { |
799a2abe | 6839 | struct private_thread_info *remote_thr; |
ee154bee | 6840 | |
5f3563ea PA |
6841 | /* Expedited registers. */ |
6842 | if (stop_reply->regcache) | |
6843 | { | |
217f1f79 | 6844 | struct regcache *regcache |
f5656ead | 6845 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6846 | cached_reg_t *reg; |
6847 | int ix; | |
6848 | ||
6849 | for (ix = 0; | |
6850 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6851 | ix++) | |
217f1f79 | 6852 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6853 | VEC_free (cached_reg_t, stop_reply->regcache); |
6854 | } | |
74531fed | 6855 | |
1941c569 | 6856 | remote_notice_new_inferior (ptid, 0); |
799a2abe PA |
6857 | remote_thr = demand_private_info (ptid); |
6858 | remote_thr->core = stop_reply->core; | |
6859 | remote_thr->stop_reason = stop_reply->stop_reason; | |
6860 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
74531fed PA |
6861 | } |
6862 | ||
74531fed PA |
6863 | stop_reply_xfree (stop_reply); |
6864 | return ptid; | |
6865 | } | |
6866 | ||
6867 | /* The non-stop mode version of target_wait. */ | |
6868 | ||
6869 | static ptid_t | |
47608cb1 | 6870 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6871 | { |
6872 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6873 | struct stop_reply *stop_reply; |
6874 | int ret; | |
fee9eda9 | 6875 | int is_notif = 0; |
74531fed PA |
6876 | |
6877 | /* If in non-stop mode, get out of getpkt even if a | |
6878 | notification is received. */ | |
6879 | ||
6880 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6881 | 0 /* forever */, &is_notif); |
74531fed PA |
6882 | while (1) |
6883 | { | |
fee9eda9 | 6884 | if (ret != -1 && !is_notif) |
74531fed PA |
6885 | switch (rs->buf[0]) |
6886 | { | |
6887 | case 'E': /* Error of some sort. */ | |
6888 | /* We're out of sync with the target now. Did it continue | |
6889 | or not? We can't tell which thread it was in non-stop, | |
6890 | so just ignore this. */ | |
6891 | warning (_("Remote failure reply: %s"), rs->buf); | |
6892 | break; | |
6893 | case 'O': /* Console output. */ | |
6894 | remote_console_output (rs->buf + 1); | |
6895 | break; | |
6896 | default: | |
6897 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6898 | break; | |
6899 | } | |
6900 | ||
6901 | /* Acknowledge a pending stop reply that may have arrived in the | |
6902 | mean time. */ | |
f48ff2a7 | 6903 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6904 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6905 | |
6906 | /* If indeed we noticed a stop reply, we're done. */ | |
6907 | stop_reply = queued_stop_reply (ptid); | |
6908 | if (stop_reply != NULL) | |
6909 | return process_stop_reply (stop_reply, status); | |
6910 | ||
47608cb1 | 6911 | /* Still no event. If we're just polling for an event, then |
74531fed | 6912 | return to the event loop. */ |
47608cb1 | 6913 | if (options & TARGET_WNOHANG) |
74531fed PA |
6914 | { |
6915 | status->kind = TARGET_WAITKIND_IGNORE; | |
6916 | return minus_one_ptid; | |
6917 | } | |
6918 | ||
47608cb1 | 6919 | /* Otherwise do a blocking wait. */ |
74531fed | 6920 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6921 | 1 /* forever */, &is_notif); |
74531fed PA |
6922 | } |
6923 | } | |
6924 | ||
6925 | /* Wait until the remote machine stops, then return, storing status in | |
6926 | STATUS just as `wait' would. */ | |
6927 | ||
6928 | static ptid_t | |
47608cb1 | 6929 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6930 | { |
6931 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6932 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6933 | char *buf; |
74531fed PA |
6934 | struct stop_reply *stop_reply; |
6935 | ||
47608cb1 PA |
6936 | again: |
6937 | ||
74531fed PA |
6938 | status->kind = TARGET_WAITKIND_IGNORE; |
6939 | status->value.integer = 0; | |
6940 | ||
6941 | stop_reply = queued_stop_reply (ptid); | |
6942 | if (stop_reply != NULL) | |
6943 | return process_stop_reply (stop_reply, status); | |
6944 | ||
6945 | if (rs->cached_wait_status) | |
6946 | /* Use the cached wait status, but only once. */ | |
6947 | rs->cached_wait_status = 0; | |
6948 | else | |
6949 | { | |
6950 | int ret; | |
722247f1 | 6951 | int is_notif; |
567420d1 PA |
6952 | int forever = ((options & TARGET_WNOHANG) == 0 |
6953 | && wait_forever_enabled_p); | |
6954 | ||
6955 | if (!rs->waiting_for_stop_reply) | |
6956 | { | |
6957 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6958 | return minus_one_ptid; | |
6959 | } | |
74531fed PA |
6960 | |
6961 | if (!target_is_async_p ()) | |
6962 | { | |
934b9bac | 6963 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6964 | /* If the user hit C-c before this packet, or between packets, |
6965 | pretend that it was hit right here. */ | |
522002f9 | 6966 | if (check_quit_flag ()) |
74531fed | 6967 | { |
522002f9 | 6968 | clear_quit_flag (); |
934b9bac | 6969 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6970 | } |
6971 | } | |
6972 | ||
6973 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6974 | _never_ wait for ever -> test on target_is_async_p(). | |
6975 | However, before we do that we need to ensure that the caller | |
6976 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6977 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6978 | forever, &is_notif); |
722247f1 | 6979 | |
5e1b953b SDJ |
6980 | if (!target_is_async_p ()) |
6981 | signal (SIGINT, ofunc); | |
6982 | ||
722247f1 YQ |
6983 | /* GDB gets a notification. Return to core as this event is |
6984 | not interesting. */ | |
6985 | if (ret != -1 && is_notif) | |
6986 | return minus_one_ptid; | |
567420d1 PA |
6987 | |
6988 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6989 | return minus_one_ptid; | |
74531fed PA |
6990 | } |
6991 | ||
6992 | buf = rs->buf; | |
6993 | ||
3a29589a DJ |
6994 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6995 | an 'F' or 'O' packet. */ | |
6996 | if (buf[0] != 'F' && buf[0] != 'O') | |
6997 | rs->ctrlc_pending_p = 0; | |
6998 | ||
74531fed PA |
6999 | switch (buf[0]) |
7000 | { | |
7001 | case 'E': /* Error of some sort. */ | |
7002 | /* We're out of sync with the target now. Did it continue or | |
7003 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7004 | rs->waiting_for_stop_reply = 0; |
7005 | ||
74531fed PA |
7006 | warning (_("Remote failure reply: %s"), buf); |
7007 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7008 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7009 | break; |
7010 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7011 | /* GDB may access the inferior memory while handling the File-I/O |
7012 | request, but we don't want GDB accessing memory while waiting | |
7013 | for a stop reply. See the comments in putpkt_binary. Set | |
7014 | waiting_for_stop_reply to 0 temporarily. */ | |
7015 | rs->waiting_for_stop_reply = 0; | |
3a29589a DJ |
7016 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
7017 | rs->ctrlc_pending_p = 0; | |
e42e5352 YQ |
7018 | /* GDB handled the File-I/O request, and the target is running |
7019 | again. Keep waiting for events. */ | |
7020 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7021 | break; |
f2faf941 | 7022 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7023 | { |
29090fb6 LM |
7024 | struct stop_reply *stop_reply; |
7025 | ||
7026 | /* There is a stop reply to handle. */ | |
7027 | rs->waiting_for_stop_reply = 0; | |
7028 | ||
7029 | stop_reply | |
722247f1 YQ |
7030 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7031 | rs->buf); | |
74531fed | 7032 | |
74531fed | 7033 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7034 | break; |
7035 | } | |
7036 | case 'O': /* Console output. */ | |
7037 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7038 | break; |
7039 | case '\0': | |
b73be471 | 7040 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7041 | { |
7042 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7043 | remote system doesn't support it. */ | |
7044 | target_terminal_ours_for_output (); | |
7045 | printf_filtered | |
7046 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7047 | gdb_signal_to_name (rs->last_sent_signal)); |
7048 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
7049 | target_terminal_inferior (); |
7050 | ||
280ceea3 | 7051 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 | 7052 | putpkt ((char *) buf); |
c8e38a49 | 7053 | break; |
43ff13b4 | 7054 | } |
c8e38a49 PA |
7055 | /* else fallthrough */ |
7056 | default: | |
7057 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7058 | break; |
43ff13b4 | 7059 | } |
c8e38a49 | 7060 | |
f2faf941 PA |
7061 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7062 | return minus_one_ptid; | |
7063 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7064 | { |
7065 | /* Nothing interesting happened. If we're doing a non-blocking | |
7066 | poll, we're done. Otherwise, go back to waiting. */ | |
7067 | if (options & TARGET_WNOHANG) | |
7068 | return minus_one_ptid; | |
7069 | else | |
7070 | goto again; | |
7071 | } | |
74531fed PA |
7072 | else if (status->kind != TARGET_WAITKIND_EXITED |
7073 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7074 | { |
7075 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7076 | record_currthread (rs, event_ptid); |
82f73884 PA |
7077 | else |
7078 | event_ptid = inferior_ptid; | |
43ff13b4 | 7079 | } |
74531fed PA |
7080 | else |
7081 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7082 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7083 | |
82f73884 | 7084 | return event_ptid; |
43ff13b4 JM |
7085 | } |
7086 | ||
74531fed PA |
7087 | /* Wait until the remote machine stops, then return, storing status in |
7088 | STATUS just as `wait' would. */ | |
7089 | ||
c8e38a49 | 7090 | static ptid_t |
117de6a9 | 7091 | remote_wait (struct target_ops *ops, |
47608cb1 | 7092 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7093 | { |
7094 | ptid_t event_ptid; | |
7095 | ||
6efcd9a8 | 7096 | if (target_is_non_stop_p ()) |
47608cb1 | 7097 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7098 | else |
47608cb1 | 7099 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7100 | |
d9d41e78 | 7101 | if (target_is_async_p ()) |
c8e38a49 | 7102 | { |
74531fed PA |
7103 | /* If there are are events left in the queue tell the event loop |
7104 | to return here. */ | |
722247f1 | 7105 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7106 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7107 | } |
c8e38a49 PA |
7108 | |
7109 | return event_ptid; | |
7110 | } | |
7111 | ||
74ca34ce | 7112 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7113 | |
b96ec7ac | 7114 | static int |
56be3814 | 7115 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
7116 | { |
7117 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 7118 | char *buf, *p; |
b96ec7ac AC |
7119 | char regp[MAX_REGISTER_SIZE]; |
7120 | int i; | |
7121 | ||
4082afcc | 7122 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7123 | return 0; |
7124 | ||
7125 | if (reg->pnum == -1) | |
7126 | return 0; | |
7127 | ||
2e9f7625 | 7128 | p = rs->buf; |
fcad0fa4 | 7129 | *p++ = 'p'; |
74ca34ce | 7130 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7131 | *p++ = '\0'; |
1f4437a4 MS |
7132 | putpkt (rs->buf); |
7133 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7134 | |
2e9f7625 DJ |
7135 | buf = rs->buf; |
7136 | ||
74ca34ce DJ |
7137 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7138 | { | |
7139 | case PACKET_OK: | |
7140 | break; | |
7141 | case PACKET_UNKNOWN: | |
7142 | return 0; | |
7143 | case PACKET_ERROR: | |
27a9c0bf MS |
7144 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7145 | gdbarch_register_name (get_regcache_arch (regcache), | |
7146 | reg->regnum), | |
7147 | buf); | |
74ca34ce | 7148 | } |
3f9a994c JB |
7149 | |
7150 | /* If this register is unfetchable, tell the regcache. */ | |
7151 | if (buf[0] == 'x') | |
8480adf2 | 7152 | { |
56be3814 | 7153 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7154 | return 1; |
b96ec7ac | 7155 | } |
b96ec7ac | 7156 | |
3f9a994c JB |
7157 | /* Otherwise, parse and supply the value. */ |
7158 | p = buf; | |
7159 | i = 0; | |
7160 | while (p[0] != 0) | |
7161 | { | |
7162 | if (p[1] == 0) | |
74ca34ce | 7163 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7164 | |
7165 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7166 | p += 2; | |
7167 | } | |
56be3814 | 7168 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7169 | return 1; |
b96ec7ac AC |
7170 | } |
7171 | ||
74ca34ce DJ |
7172 | /* Fetch the registers included in the target's 'g' packet. */ |
7173 | ||
29709017 DJ |
7174 | static int |
7175 | send_g_packet (void) | |
c906108c | 7176 | { |
d01949b6 | 7177 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7178 | int buf_len; |
c906108c | 7179 | |
bba74b36 | 7180 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7181 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7182 | |
29709017 DJ |
7183 | /* We can get out of synch in various cases. If the first character |
7184 | in the buffer is not a hex character, assume that has happened | |
7185 | and try to fetch another packet to read. */ | |
7186 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7187 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7188 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7189 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7190 | { | |
7191 | if (remote_debug) | |
7192 | fprintf_unfiltered (gdb_stdlog, | |
7193 | "Bad register packet; fetching a new packet\n"); | |
7194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7195 | } | |
7196 | ||
74ca34ce DJ |
7197 | buf_len = strlen (rs->buf); |
7198 | ||
7199 | /* Sanity check the received packet. */ | |
7200 | if (buf_len % 2 != 0) | |
7201 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7202 | |
7203 | return buf_len / 2; | |
7204 | } | |
7205 | ||
7206 | static void | |
56be3814 | 7207 | process_g_packet (struct regcache *regcache) |
29709017 | 7208 | { |
4a22f64d | 7209 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7210 | struct remote_state *rs = get_remote_state (); |
7211 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7212 | int i, buf_len; | |
7213 | char *p; | |
7214 | char *regs; | |
7215 | ||
7216 | buf_len = strlen (rs->buf); | |
7217 | ||
7218 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7219 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7220 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7221 | ||
7222 | /* Save the size of the packet sent to us by the target. It is used | |
7223 | as a heuristic when determining the max size of packets that the | |
7224 | target can safely receive. */ | |
7225 | if (rsa->actual_register_packet_size == 0) | |
7226 | rsa->actual_register_packet_size = buf_len; | |
7227 | ||
7228 | /* If this is smaller than we guessed the 'g' packet would be, | |
7229 | update our records. A 'g' reply that doesn't include a register's | |
7230 | value implies either that the register is not available, or that | |
7231 | the 'p' packet must be used. */ | |
7232 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7233 | { |
74ca34ce DJ |
7234 | rsa->sizeof_g_packet = buf_len / 2; |
7235 | ||
4a22f64d | 7236 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7237 | { |
74ca34ce DJ |
7238 | if (rsa->regs[i].pnum == -1) |
7239 | continue; | |
7240 | ||
7241 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
7242 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 7243 | else |
74ca34ce | 7244 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7245 | } |
74ca34ce | 7246 | } |
b323314b | 7247 | |
224c3ddb | 7248 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7249 | |
7250 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7251 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7252 | |
c906108c SS |
7253 | /* Reply describes registers byte by byte, each byte encoded as two |
7254 | hex characters. Suck them all up, then supply them to the | |
7255 | register cacheing/storage mechanism. */ | |
7256 | ||
74ca34ce | 7257 | p = rs->buf; |
ea9c271d | 7258 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7259 | { |
74ca34ce DJ |
7260 | if (p[0] == 0 || p[1] == 0) |
7261 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7262 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7263 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7264 | |
c906108c | 7265 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7266 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7267 | else |
7268 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7269 | p += 2; | |
7270 | } | |
7271 | ||
a744cf53 MS |
7272 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7273 | { | |
7274 | struct packet_reg *r = &rsa->regs[i]; | |
7275 | ||
7276 | if (r->in_g_packet) | |
7277 | { | |
7278 | if (r->offset * 2 >= strlen (rs->buf)) | |
7279 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
7280 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7281 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7282 | else if (rs->buf[r->offset * 2] == 'x') |
7283 | { | |
7284 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7285 | /* The register isn't available, mark it as such (at | |
7286 | the same time setting the value to zero). */ | |
7287 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7288 | } | |
7289 | else | |
7290 | regcache_raw_supply (regcache, r->regnum, | |
7291 | regs + r->offset); | |
7292 | } | |
7293 | } | |
c906108c SS |
7294 | } |
7295 | ||
29709017 | 7296 | static void |
56be3814 | 7297 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7298 | { |
7299 | send_g_packet (); | |
56be3814 | 7300 | process_g_packet (regcache); |
29709017 DJ |
7301 | } |
7302 | ||
e6e4e701 PA |
7303 | /* Make the remote selected traceframe match GDB's selected |
7304 | traceframe. */ | |
7305 | ||
7306 | static void | |
7307 | set_remote_traceframe (void) | |
7308 | { | |
7309 | int newnum; | |
262e1174 | 7310 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7311 | |
262e1174 | 7312 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7313 | return; |
7314 | ||
7315 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7316 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7317 | |
7318 | newnum = target_trace_find (tfind_number, | |
7319 | get_traceframe_number (), 0, 0, NULL); | |
7320 | ||
7321 | /* Should not happen. If it does, all bets are off. */ | |
7322 | if (newnum != get_traceframe_number ()) | |
7323 | warning (_("could not set remote traceframe")); | |
7324 | } | |
7325 | ||
74ca34ce | 7326 | static void |
28439f5e PA |
7327 | remote_fetch_registers (struct target_ops *ops, |
7328 | struct regcache *regcache, int regnum) | |
74ca34ce | 7329 | { |
74ca34ce DJ |
7330 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7331 | int i; | |
7332 | ||
e6e4e701 | 7333 | set_remote_traceframe (); |
79d7f229 | 7334 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7335 | |
7336 | if (regnum >= 0) | |
7337 | { | |
7338 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7339 | |
74ca34ce DJ |
7340 | gdb_assert (reg != NULL); |
7341 | ||
7342 | /* If this register might be in the 'g' packet, try that first - | |
7343 | we are likely to read more than one register. If this is the | |
7344 | first 'g' packet, we might be overly optimistic about its | |
7345 | contents, so fall back to 'p'. */ | |
7346 | if (reg->in_g_packet) | |
7347 | { | |
56be3814 | 7348 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7349 | if (reg->in_g_packet) |
7350 | return; | |
7351 | } | |
7352 | ||
56be3814 | 7353 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7354 | return; |
7355 | ||
7356 | /* This register is not available. */ | |
56be3814 | 7357 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7358 | |
7359 | return; | |
7360 | } | |
7361 | ||
56be3814 | 7362 | fetch_registers_using_g (regcache); |
74ca34ce | 7363 | |
4a22f64d | 7364 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7365 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7366 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7367 | { |
7368 | /* This register is not available. */ | |
56be3814 | 7369 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7370 | } |
7371 | } | |
7372 | ||
c906108c SS |
7373 | /* Prepare to store registers. Since we may send them all (using a |
7374 | 'G' request), we have to read out the ones we don't want to change | |
7375 | first. */ | |
7376 | ||
c5aa993b | 7377 | static void |
f32dbf8c | 7378 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7379 | { |
ea9c271d | 7380 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7381 | int i; |
cfd77fa1 | 7382 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 7383 | |
c906108c | 7384 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7385 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7386 | { |
7387 | case PACKET_DISABLE: | |
7388 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7389 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7390 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7391 | if (rsa->regs[i].in_g_packet) |
316f2060 | 7392 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
7393 | break; |
7394 | case PACKET_ENABLE: | |
7395 | break; | |
7396 | } | |
7397 | } | |
7398 | ||
ad10f812 | 7399 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7400 | packet was not recognized. */ |
5a2468f5 JM |
7401 | |
7402 | static int | |
1f4437a4 MS |
7403 | store_register_using_P (const struct regcache *regcache, |
7404 | struct packet_reg *reg) | |
5a2468f5 | 7405 | { |
4a22f64d | 7406 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7407 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7408 | /* Try storing a single register. */ |
6d820c5c | 7409 | char *buf = rs->buf; |
cfd77fa1 | 7410 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7411 | char *p; |
5a2468f5 | 7412 | |
4082afcc | 7413 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7414 | return 0; |
7415 | ||
7416 | if (reg->pnum == -1) | |
7417 | return 0; | |
7418 | ||
ea9c271d | 7419 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7420 | p = buf + strlen (buf); |
56be3814 | 7421 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7422 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7423 | putpkt (rs->buf); |
7424 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7425 | |
74ca34ce DJ |
7426 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7427 | { | |
7428 | case PACKET_OK: | |
7429 | return 1; | |
7430 | case PACKET_ERROR: | |
27a9c0bf MS |
7431 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7432 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7433 | case PACKET_UNKNOWN: |
7434 | return 0; | |
7435 | default: | |
7436 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7437 | } | |
c906108c SS |
7438 | } |
7439 | ||
23860348 MS |
7440 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7441 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7442 | |
7443 | static void | |
56be3814 | 7444 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7445 | { |
d01949b6 | 7446 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7447 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7448 | gdb_byte *regs; |
c906108c SS |
7449 | char *p; |
7450 | ||
193cb69f AC |
7451 | /* Extract all the registers in the regcache copying them into a |
7452 | local buffer. */ | |
7453 | { | |
b323314b | 7454 | int i; |
a744cf53 | 7455 | |
224c3ddb | 7456 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7457 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7458 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7459 | { |
ea9c271d | 7460 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7461 | |
b323314b | 7462 | if (r->in_g_packet) |
56be3814 | 7463 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7464 | } |
7465 | } | |
c906108c SS |
7466 | |
7467 | /* Command describes registers byte by byte, | |
7468 | each byte encoded as two hex characters. */ | |
6d820c5c | 7469 | p = rs->buf; |
193cb69f | 7470 | *p++ = 'G'; |
74ca34ce DJ |
7471 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7472 | updated. */ | |
7473 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7474 | putpkt (rs->buf); |
7475 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7476 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7477 | error (_("Could not write registers; remote failure reply '%s'"), |
7478 | rs->buf); | |
c906108c | 7479 | } |
74ca34ce DJ |
7480 | |
7481 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7482 | of the register cache buffer. FIXME: ignores errors. */ | |
7483 | ||
7484 | static void | |
28439f5e PA |
7485 | remote_store_registers (struct target_ops *ops, |
7486 | struct regcache *regcache, int regnum) | |
74ca34ce | 7487 | { |
74ca34ce DJ |
7488 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7489 | int i; | |
7490 | ||
e6e4e701 | 7491 | set_remote_traceframe (); |
79d7f229 | 7492 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7493 | |
7494 | if (regnum >= 0) | |
7495 | { | |
7496 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7497 | |
74ca34ce DJ |
7498 | gdb_assert (reg != NULL); |
7499 | ||
7500 | /* Always prefer to store registers using the 'P' packet if | |
7501 | possible; we often change only a small number of registers. | |
7502 | Sometimes we change a larger number; we'd need help from a | |
7503 | higher layer to know to use 'G'. */ | |
56be3814 | 7504 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7505 | return; |
7506 | ||
7507 | /* For now, don't complain if we have no way to write the | |
7508 | register. GDB loses track of unavailable registers too | |
7509 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7510 | any way to read the register, either... */ |
74ca34ce DJ |
7511 | if (!reg->in_g_packet) |
7512 | return; | |
7513 | ||
56be3814 | 7514 | store_registers_using_G (regcache); |
74ca34ce DJ |
7515 | return; |
7516 | } | |
7517 | ||
56be3814 | 7518 | store_registers_using_G (regcache); |
74ca34ce | 7519 | |
4a22f64d | 7520 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7521 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7522 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7523 | /* See above for why we do not issue an error here. */ |
7524 | continue; | |
7525 | } | |
c906108c SS |
7526 | \f |
7527 | ||
7528 | /* Return the number of hex digits in num. */ | |
7529 | ||
7530 | static int | |
fba45db2 | 7531 | hexnumlen (ULONGEST num) |
c906108c SS |
7532 | { |
7533 | int i; | |
7534 | ||
7535 | for (i = 0; num != 0; i++) | |
7536 | num >>= 4; | |
7537 | ||
7538 | return max (i, 1); | |
7539 | } | |
7540 | ||
2df3850c | 7541 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7542 | |
7543 | static int | |
fba45db2 | 7544 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7545 | { |
c906108c | 7546 | int len = hexnumlen (num); |
a744cf53 | 7547 | |
2df3850c JM |
7548 | return hexnumnstr (buf, num, len); |
7549 | } | |
7550 | ||
c906108c | 7551 | |
2df3850c | 7552 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7553 | |
2df3850c | 7554 | static int |
fba45db2 | 7555 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7556 | { |
7557 | int i; | |
7558 | ||
7559 | buf[width] = '\0'; | |
7560 | ||
7561 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7562 | { |
c5aa993b | 7563 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7564 | num >>= 4; |
7565 | } | |
7566 | ||
2df3850c | 7567 | return width; |
c906108c SS |
7568 | } |
7569 | ||
23860348 | 7570 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7571 | |
7572 | static CORE_ADDR | |
fba45db2 | 7573 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7574 | { |
883b9c6c | 7575 | unsigned int address_size = remote_address_size; |
a744cf53 | 7576 | |
911c95a5 UW |
7577 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7578 | if (!address_size) | |
f5656ead | 7579 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7580 | |
7581 | if (address_size > 0 | |
7582 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7583 | { |
7584 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7585 | in a ULONGEST variable. */ |
c906108c | 7586 | ULONGEST mask = 1; |
a744cf53 | 7587 | |
911c95a5 | 7588 | mask = (mask << address_size) - 1; |
c906108c SS |
7589 | addr &= mask; |
7590 | } | |
7591 | return addr; | |
7592 | } | |
7593 | ||
7594 | /* Determine whether the remote target supports binary downloading. | |
7595 | This is accomplished by sending a no-op memory write of zero length | |
7596 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7597 | the whole packet, since many stubs strip the eighth bit and |
7598 | subsequently compute a wrong checksum, which causes real havoc with | |
7599 | remote_write_bytes. | |
7a292a7a | 7600 | |
96baa820 | 7601 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7602 | clean. In cases like this, the user should clear "remote |
23860348 | 7603 | X-packet". */ |
96baa820 | 7604 | |
c906108c | 7605 | static void |
fba45db2 | 7606 | check_binary_download (CORE_ADDR addr) |
c906108c | 7607 | { |
d01949b6 | 7608 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7609 | |
4082afcc | 7610 | switch (packet_support (PACKET_X)) |
c906108c | 7611 | { |
96baa820 JM |
7612 | case PACKET_DISABLE: |
7613 | break; | |
7614 | case PACKET_ENABLE: | |
7615 | break; | |
7616 | case PACKET_SUPPORT_UNKNOWN: | |
7617 | { | |
96baa820 | 7618 | char *p; |
802188a7 | 7619 | |
2e9f7625 | 7620 | p = rs->buf; |
96baa820 JM |
7621 | *p++ = 'X'; |
7622 | p += hexnumstr (p, (ULONGEST) addr); | |
7623 | *p++ = ','; | |
7624 | p += hexnumstr (p, (ULONGEST) 0); | |
7625 | *p++ = ':'; | |
7626 | *p = '\0'; | |
802188a7 | 7627 | |
2e9f7625 | 7628 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7629 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7630 | |
2e9f7625 | 7631 | if (rs->buf[0] == '\0') |
96baa820 JM |
7632 | { |
7633 | if (remote_debug) | |
7634 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7635 | "binary downloading NOT " |
7636 | "supported by target\n"); | |
444abaca | 7637 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7638 | } |
7639 | else | |
7640 | { | |
7641 | if (remote_debug) | |
7642 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7643 | "binary downloading supported by target\n"); |
444abaca | 7644 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7645 | } |
7646 | break; | |
7647 | } | |
c906108c SS |
7648 | } |
7649 | } | |
7650 | ||
124e13d9 SM |
7651 | /* Helper function to resize the payload in order to try to get a good |
7652 | alignment. We try to write an amount of data such that the next write will | |
7653 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7654 | ||
7655 | static int | |
7656 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7657 | { | |
7658 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7659 | } | |
7660 | ||
c906108c SS |
7661 | /* Write memory data directly to the remote machine. |
7662 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7663 | HEADER is the starting part of the packet. |
c906108c SS |
7664 | MEMADDR is the address in the remote memory space. |
7665 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7666 | LEN_UNITS is the number of addressable units to write. |
7667 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7668 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7669 | should send data as binary ('X'), or hex-encoded ('M'). | |
7670 | ||
7671 | The function creates packet of the form | |
7672 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7673 | ||
124e13d9 | 7674 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7675 | |
7676 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7677 | are omitted. | |
7678 | ||
9b409511 | 7679 | Return the transferred status, error or OK (an |
124e13d9 SM |
7680 | 'enum target_xfer_status' value). Save the number of addressable units |
7681 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7682 | ||
7683 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7684 | exchange between gdb and the stub could look like (?? in place of the | |
7685 | checksum): | |
7686 | ||
7687 | -> $m1000,4#?? | |
7688 | <- aaaabbbbccccdddd | |
7689 | ||
7690 | -> $M1000,3:eeeeffffeeee#?? | |
7691 | <- OK | |
7692 | ||
7693 | -> $m1000,4#?? | |
7694 | <- eeeeffffeeeedddd */ | |
c906108c | 7695 | |
9b409511 | 7696 | static enum target_xfer_status |
a76d924d | 7697 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7698 | const gdb_byte *myaddr, ULONGEST len_units, |
7699 | int unit_size, ULONGEST *xfered_len_units, | |
7700 | char packet_format, int use_length) | |
c906108c | 7701 | { |
6d820c5c | 7702 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7703 | char *p; |
a76d924d DJ |
7704 | char *plen = NULL; |
7705 | int plenlen = 0; | |
124e13d9 SM |
7706 | int todo_units; |
7707 | int units_written; | |
7708 | int payload_capacity_bytes; | |
7709 | int payload_length_bytes; | |
a76d924d DJ |
7710 | |
7711 | if (packet_format != 'X' && packet_format != 'M') | |
7712 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7713 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7714 | |
124e13d9 | 7715 | if (len_units == 0) |
9b409511 | 7716 | return TARGET_XFER_EOF; |
b2182ed2 | 7717 | |
124e13d9 | 7718 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7719 | |
6d820c5c DJ |
7720 | /* The packet buffer will be large enough for the payload; |
7721 | get_memory_packet_size ensures this. */ | |
a76d924d | 7722 | rs->buf[0] = '\0'; |
c906108c | 7723 | |
a257b5bb | 7724 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7725 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7726 | ||
124e13d9 | 7727 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7728 | if (!use_length) |
0df8b418 | 7729 | /* The comma won't be used. */ |
124e13d9 SM |
7730 | payload_capacity_bytes += 1; |
7731 | payload_capacity_bytes -= strlen (header); | |
7732 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7733 | |
a76d924d | 7734 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7735 | |
a76d924d DJ |
7736 | strcat (rs->buf, header); |
7737 | p = rs->buf + strlen (header); | |
7738 | ||
7739 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7740 | if (packet_format == 'X') | |
c906108c | 7741 | { |
23860348 | 7742 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7743 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7744 | if (use_length) |
124e13d9 SM |
7745 | payload_capacity_bytes -= hexnumlen (todo_units); |
7746 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7747 | } |
7748 | else | |
7749 | { | |
124e13d9 SM |
7750 | /* Number of bytes that will fit. */ |
7751 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7752 | if (use_length) |
124e13d9 SM |
7753 | payload_capacity_bytes -= hexnumlen (todo_units); |
7754 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7755 | } |
a76d924d | 7756 | |
124e13d9 | 7757 | if (todo_units <= 0) |
3de11b2e | 7758 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7759 | _("minimum packet size too small to write data")); |
802188a7 | 7760 | |
6765f3e5 DJ |
7761 | /* If we already need another packet, then try to align the end |
7762 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7763 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7764 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7765 | |
a257b5bb | 7766 | /* Append "<memaddr>". */ |
917317f4 JM |
7767 | memaddr = remote_address_masked (memaddr); |
7768 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7769 | |
a76d924d DJ |
7770 | if (use_length) |
7771 | { | |
7772 | /* Append ",". */ | |
7773 | *p++ = ','; | |
802188a7 | 7774 | |
124e13d9 SM |
7775 | /* Append the length and retain its location and size. It may need to be |
7776 | adjusted once the packet body has been created. */ | |
a76d924d | 7777 | plen = p; |
124e13d9 | 7778 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7779 | p += plenlen; |
7780 | } | |
a257b5bb AC |
7781 | |
7782 | /* Append ":". */ | |
917317f4 JM |
7783 | *p++ = ':'; |
7784 | *p = '\0'; | |
802188a7 | 7785 | |
a257b5bb | 7786 | /* Append the packet body. */ |
a76d924d | 7787 | if (packet_format == 'X') |
917317f4 | 7788 | { |
917317f4 JM |
7789 | /* Binary mode. Send target system values byte by byte, in |
7790 | increasing byte addresses. Only escape certain critical | |
7791 | characters. */ | |
124e13d9 SM |
7792 | payload_length_bytes = |
7793 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7794 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7795 | |
124e13d9 | 7796 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7797 | a second try to keep the end of the packet aligned. Don't do |
7798 | this if the packet is tiny. */ | |
124e13d9 | 7799 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7800 | { |
124e13d9 SM |
7801 | int new_todo_units; |
7802 | ||
7803 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7804 | ||
7805 | if (new_todo_units != units_written) | |
7806 | payload_length_bytes = | |
7807 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7808 | (gdb_byte *) p, &units_written, | |
7809 | payload_capacity_bytes); | |
6765f3e5 DJ |
7810 | } |
7811 | ||
124e13d9 SM |
7812 | p += payload_length_bytes; |
7813 | if (use_length && units_written < todo_units) | |
c906108c | 7814 | { |
802188a7 | 7815 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7816 | and we have actually sent fewer units than planned. |
917317f4 JM |
7817 | Fix-up the length field of the packet. Use the same |
7818 | number of characters as before. */ | |
124e13d9 SM |
7819 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7820 | plenlen); | |
917317f4 | 7821 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7822 | } |
a76d924d DJ |
7823 | } |
7824 | else | |
7825 | { | |
917317f4 JM |
7826 | /* Normal mode: Send target system values byte by byte, in |
7827 | increasing byte addresses. Each byte is encoded as a two hex | |
7828 | value. */ | |
124e13d9 SM |
7829 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7830 | units_written = todo_units; | |
c906108c | 7831 | } |
802188a7 | 7832 | |
2e9f7625 | 7833 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7834 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7835 | |
2e9f7625 | 7836 | if (rs->buf[0] == 'E') |
00d84524 | 7837 | return TARGET_XFER_E_IO; |
802188a7 | 7838 | |
124e13d9 SM |
7839 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7840 | send fewer units than we'd planned. */ | |
7841 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7842 | return TARGET_XFER_OK; |
c906108c SS |
7843 | } |
7844 | ||
a76d924d DJ |
7845 | /* Write memory data directly to the remote machine. |
7846 | This does not inform the data cache; the data cache uses this. | |
7847 | MEMADDR is the address in the remote memory space. | |
7848 | MYADDR is the address of the buffer in our space. | |
7849 | LEN is the number of bytes. | |
7850 | ||
9b409511 YQ |
7851 | Return the transferred status, error or OK (an |
7852 | 'enum target_xfer_status' value). Save the number of bytes | |
7853 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7854 | |
9b409511 YQ |
7855 | static enum target_xfer_status |
7856 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7857 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7858 | { |
7859 | char *packet_format = 0; | |
7860 | ||
7861 | /* Check whether the target supports binary download. */ | |
7862 | check_binary_download (memaddr); | |
7863 | ||
4082afcc | 7864 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7865 | { |
7866 | case PACKET_ENABLE: | |
7867 | packet_format = "X"; | |
7868 | break; | |
7869 | case PACKET_DISABLE: | |
7870 | packet_format = "M"; | |
7871 | break; | |
7872 | case PACKET_SUPPORT_UNKNOWN: | |
7873 | internal_error (__FILE__, __LINE__, | |
7874 | _("remote_write_bytes: bad internal state")); | |
7875 | default: | |
7876 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7877 | } | |
7878 | ||
7879 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7880 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7881 | packet_format[0], 1); |
a76d924d DJ |
7882 | } |
7883 | ||
9217e74e YQ |
7884 | /* Read memory data directly from the remote machine. |
7885 | This does not use the data cache; the data cache uses this. | |
7886 | MEMADDR is the address in the remote memory space. | |
7887 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7888 | LEN_UNITS is the number of addressable memory units to read.. |
7889 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7890 | |
7891 | Return the transferred status, error or OK (an | |
7892 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7893 | transferred in *XFERED_LEN_UNITS. |
7894 | ||
7895 | See the comment of remote_write_bytes_aux for an example of | |
7896 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7897 | |
7898 | static enum target_xfer_status | |
124e13d9 SM |
7899 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7900 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7901 | { |
7902 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7903 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7904 | char *p; |
124e13d9 SM |
7905 | int todo_units; |
7906 | int decoded_bytes; | |
9217e74e | 7907 | |
124e13d9 | 7908 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7909 | /* The packet buffer will be large enough for the payload; |
7910 | get_memory_packet_size ensures this. */ | |
7911 | ||
124e13d9 SM |
7912 | /* Number of units that will fit. */ |
7913 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7914 | |
7915 | /* Construct "m"<memaddr>","<len>". */ | |
7916 | memaddr = remote_address_masked (memaddr); | |
7917 | p = rs->buf; | |
7918 | *p++ = 'm'; | |
7919 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7920 | *p++ = ','; | |
124e13d9 | 7921 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7922 | *p = '\0'; |
7923 | putpkt (rs->buf); | |
7924 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7925 | if (rs->buf[0] == 'E' | |
7926 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7927 | && rs->buf[3] == '\0') | |
7928 | return TARGET_XFER_E_IO; | |
7929 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7930 | characters. */ | |
7931 | p = rs->buf; | |
124e13d9 | 7932 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7933 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7934 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7935 | return TARGET_XFER_OK; |
7936 | } | |
7937 | ||
b55fbac4 YQ |
7938 | /* Using the set of read-only target sections of remote, read live |
7939 | read-only memory. | |
8acf9577 YQ |
7940 | |
7941 | For interface/parameters/return description see target.h, | |
7942 | to_xfer_partial. */ | |
7943 | ||
7944 | static enum target_xfer_status | |
b55fbac4 YQ |
7945 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7946 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7947 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7948 | { |
7949 | struct target_section *secp; | |
7950 | struct target_section_table *table; | |
7951 | ||
7952 | secp = target_section_by_addr (ops, memaddr); | |
7953 | if (secp != NULL | |
7954 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7955 | secp->the_bfd_section) | |
7956 | & SEC_READONLY)) | |
7957 | { | |
7958 | struct target_section *p; | |
7959 | ULONGEST memend = memaddr + len; | |
7960 | ||
7961 | table = target_get_section_table (ops); | |
7962 | ||
7963 | for (p = table->sections; p < table->sections_end; p++) | |
7964 | { | |
7965 | if (memaddr >= p->addr) | |
7966 | { | |
7967 | if (memend <= p->endaddr) | |
7968 | { | |
7969 | /* Entire transfer is within this section. */ | |
124e13d9 | 7970 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7971 | xfered_len); |
8acf9577 YQ |
7972 | } |
7973 | else if (memaddr >= p->endaddr) | |
7974 | { | |
7975 | /* This section ends before the transfer starts. */ | |
7976 | continue; | |
7977 | } | |
7978 | else | |
7979 | { | |
7980 | /* This section overlaps the transfer. Just do half. */ | |
7981 | len = p->endaddr - memaddr; | |
124e13d9 | 7982 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7983 | xfered_len); |
8acf9577 YQ |
7984 | } |
7985 | } | |
7986 | } | |
7987 | } | |
7988 | ||
7989 | return TARGET_XFER_EOF; | |
7990 | } | |
7991 | ||
9217e74e YQ |
7992 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7993 | first if the requested memory is unavailable in traceframe. | |
7994 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7995 | |
9b409511 | 7996 | static enum target_xfer_status |
8acf9577 | 7997 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7998 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7999 | ULONGEST *xfered_len) | |
c906108c | 8000 | { |
6b6aa828 | 8001 | if (len == 0) |
96c4f946 | 8002 | return TARGET_XFER_EOF; |
b2182ed2 | 8003 | |
8acf9577 YQ |
8004 | if (get_traceframe_number () != -1) |
8005 | { | |
8006 | VEC(mem_range_s) *available; | |
8007 | ||
8008 | /* If we fail to get the set of available memory, then the | |
8009 | target does not support querying traceframe info, and so we | |
8010 | attempt reading from the traceframe anyway (assuming the | |
8011 | target implements the old QTro packet then). */ | |
8012 | if (traceframe_available_memory (&available, memaddr, len)) | |
8013 | { | |
8014 | struct cleanup *old_chain; | |
8015 | ||
8016 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
8017 | ||
8018 | if (VEC_empty (mem_range_s, available) | |
8019 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
8020 | { | |
8021 | enum target_xfer_status res; | |
8022 | ||
8023 | /* Don't read into the traceframe's available | |
8024 | memory. */ | |
8025 | if (!VEC_empty (mem_range_s, available)) | |
8026 | { | |
8027 | LONGEST oldlen = len; | |
8028 | ||
8029 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
8030 | gdb_assert (len <= oldlen); | |
8031 | } | |
8032 | ||
8033 | do_cleanups (old_chain); | |
8034 | ||
8035 | /* This goes through the topmost target again. */ | |
b55fbac4 | 8036 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8037 | len, unit_size, xfered_len); |
8acf9577 YQ |
8038 | if (res == TARGET_XFER_OK) |
8039 | return TARGET_XFER_OK; | |
8040 | else | |
8041 | { | |
8042 | /* No use trying further, we know some memory starting | |
8043 | at MEMADDR isn't available. */ | |
8044 | *xfered_len = len; | |
8045 | return TARGET_XFER_UNAVAILABLE; | |
8046 | } | |
8047 | } | |
8048 | ||
8049 | /* Don't try to read more than how much is available, in | |
8050 | case the target implements the deprecated QTro packet to | |
8051 | cater for older GDBs (the target's knowledge of read-only | |
8052 | sections may be outdated by now). */ | |
8053 | len = VEC_index (mem_range_s, available, 0)->length; | |
8054 | ||
8055 | do_cleanups (old_chain); | |
8056 | } | |
8057 | } | |
8058 | ||
124e13d9 | 8059 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8060 | } |
74531fed | 8061 | |
c906108c | 8062 | \f |
c906108c | 8063 | |
a76d924d DJ |
8064 | /* Sends a packet with content determined by the printf format string |
8065 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8066 | whether the packet was a success, a failure, or unknown. */ | |
8067 | ||
77b64a49 PA |
8068 | static enum packet_result remote_send_printf (const char *format, ...) |
8069 | ATTRIBUTE_PRINTF (1, 2); | |
8070 | ||
2c0b251b | 8071 | static enum packet_result |
a76d924d DJ |
8072 | remote_send_printf (const char *format, ...) |
8073 | { | |
8074 | struct remote_state *rs = get_remote_state (); | |
8075 | int max_size = get_remote_packet_size (); | |
a76d924d | 8076 | va_list ap; |
a744cf53 | 8077 | |
a76d924d DJ |
8078 | va_start (ap, format); |
8079 | ||
8080 | rs->buf[0] = '\0'; | |
8081 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8082 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8083 | |
8084 | if (putpkt (rs->buf) < 0) | |
8085 | error (_("Communication problem with target.")); | |
8086 | ||
8087 | rs->buf[0] = '\0'; | |
8088 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8089 | ||
8090 | return packet_check_result (rs->buf); | |
8091 | } | |
8092 | ||
8093 | static void | |
8094 | restore_remote_timeout (void *p) | |
8095 | { | |
8096 | int value = *(int *)p; | |
a744cf53 | 8097 | |
a76d924d DJ |
8098 | remote_timeout = value; |
8099 | } | |
8100 | ||
8101 | /* Flash writing can take quite some time. We'll set | |
8102 | effectively infinite timeout for flash operations. | |
8103 | In future, we'll need to decide on a better approach. */ | |
8104 | static const int remote_flash_timeout = 1000; | |
8105 | ||
8106 | static void | |
8107 | remote_flash_erase (struct target_ops *ops, | |
8108 | ULONGEST address, LONGEST length) | |
8109 | { | |
f5656ead | 8110 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
8111 | int saved_remote_timeout = remote_timeout; |
8112 | enum packet_result ret; | |
a76d924d DJ |
8113 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
8114 | &saved_remote_timeout); | |
a744cf53 | 8115 | |
a76d924d DJ |
8116 | remote_timeout = remote_flash_timeout; |
8117 | ||
8118 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8119 | phex (address, addr_size), |
a76d924d DJ |
8120 | phex (length, 4)); |
8121 | switch (ret) | |
8122 | { | |
8123 | case PACKET_UNKNOWN: | |
8124 | error (_("Remote target does not support flash erase")); | |
8125 | case PACKET_ERROR: | |
8126 | error (_("Error erasing flash with vFlashErase packet")); | |
8127 | default: | |
8128 | break; | |
8129 | } | |
8130 | ||
8131 | do_cleanups (back_to); | |
8132 | } | |
8133 | ||
9b409511 YQ |
8134 | static enum target_xfer_status |
8135 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8136 | ULONGEST length, ULONGEST *xfered_len, | |
8137 | const gdb_byte *data) | |
a76d924d DJ |
8138 | { |
8139 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 8140 | enum target_xfer_status ret; |
a76d924d | 8141 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 8142 | &saved_remote_timeout); |
a76d924d DJ |
8143 | |
8144 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 8145 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 8146 | xfered_len,'X', 0); |
a76d924d DJ |
8147 | do_cleanups (back_to); |
8148 | ||
8149 | return ret; | |
8150 | } | |
8151 | ||
8152 | static void | |
8153 | remote_flash_done (struct target_ops *ops) | |
8154 | { | |
8155 | int saved_remote_timeout = remote_timeout; | |
8156 | int ret; | |
8157 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
8158 | &saved_remote_timeout); | |
8159 | ||
8160 | remote_timeout = remote_flash_timeout; | |
8161 | ret = remote_send_printf ("vFlashDone"); | |
8162 | do_cleanups (back_to); | |
8163 | ||
8164 | switch (ret) | |
8165 | { | |
8166 | case PACKET_UNKNOWN: | |
8167 | error (_("Remote target does not support vFlashDone")); | |
8168 | case PACKET_ERROR: | |
8169 | error (_("Error finishing flash operation")); | |
8170 | default: | |
8171 | break; | |
8172 | } | |
8173 | } | |
8174 | ||
c906108c | 8175 | static void |
fba45db2 | 8176 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8177 | { |
8178 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8179 | } | |
8180 | \f | |
8181 | /* Stuff for dealing with the packets which are part of this protocol. | |
8182 | See comment at top of file for details. */ | |
8183 | ||
1927e618 PA |
8184 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8185 | error to higher layers. Called when a serial error is detected. | |
8186 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8187 | the system error message for errno at function entry and final dot |
8188 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8189 | |
8190 | static void | |
8191 | unpush_and_perror (const char *string) | |
8192 | { | |
d6cb50a2 | 8193 | int saved_errno = errno; |
1927e618 PA |
8194 | |
8195 | remote_unpush_target (); | |
d6cb50a2 JK |
8196 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8197 | safe_strerror (saved_errno)); | |
1927e618 PA |
8198 | } |
8199 | ||
0876f84a | 8200 | /* Read a single character from the remote end. */ |
c906108c SS |
8201 | |
8202 | static int | |
fba45db2 | 8203 | readchar (int timeout) |
c906108c SS |
8204 | { |
8205 | int ch; | |
5d93a237 | 8206 | struct remote_state *rs = get_remote_state (); |
c906108c | 8207 | |
5d93a237 | 8208 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 8209 | |
2acceee2 | 8210 | if (ch >= 0) |
0876f84a | 8211 | return ch; |
2acceee2 JM |
8212 | |
8213 | switch ((enum serial_rc) ch) | |
c906108c SS |
8214 | { |
8215 | case SERIAL_EOF: | |
78a095c3 | 8216 | remote_unpush_target (); |
598d3636 | 8217 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8218 | /* no return */ |
c906108c | 8219 | case SERIAL_ERROR: |
1927e618 PA |
8220 | unpush_and_perror (_("Remote communication error. " |
8221 | "Target disconnected.")); | |
2acceee2 | 8222 | /* no return */ |
c906108c | 8223 | case SERIAL_TIMEOUT: |
2acceee2 | 8224 | break; |
c906108c | 8225 | } |
2acceee2 | 8226 | return ch; |
c906108c SS |
8227 | } |
8228 | ||
c33e31fd PA |
8229 | /* Wrapper for serial_write that closes the target and throws if |
8230 | writing fails. */ | |
8231 | ||
8232 | static void | |
8233 | remote_serial_write (const char *str, int len) | |
8234 | { | |
5d93a237 TT |
8235 | struct remote_state *rs = get_remote_state (); |
8236 | ||
8237 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8238 | { |
1927e618 PA |
8239 | unpush_and_perror (_("Remote communication error. " |
8240 | "Target disconnected.")); | |
c33e31fd PA |
8241 | } |
8242 | } | |
8243 | ||
6d820c5c DJ |
8244 | /* Send the command in *BUF to the remote machine, and read the reply |
8245 | into *BUF. Report an error if we get an error reply. Resize | |
8246 | *BUF using xrealloc if necessary to hold the result, and update | |
8247 | *SIZEOF_BUF. */ | |
c906108c SS |
8248 | |
8249 | static void | |
6d820c5c DJ |
8250 | remote_send (char **buf, |
8251 | long *sizeof_buf) | |
c906108c | 8252 | { |
6d820c5c | 8253 | putpkt (*buf); |
c2d11a7d | 8254 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8255 | |
6d820c5c DJ |
8256 | if ((*buf)[0] == 'E') |
8257 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8258 | } |
8259 | ||
6e5abd65 PA |
8260 | /* Return a pointer to an xmalloc'ed string representing an escaped |
8261 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
8262 | etc. The caller is responsible for releasing the returned | |
8263 | memory. */ | |
8264 | ||
8265 | static char * | |
8266 | escape_buffer (const char *buf, int n) | |
8267 | { | |
8268 | struct cleanup *old_chain; | |
8269 | struct ui_file *stb; | |
8270 | char *str; | |
6e5abd65 PA |
8271 | |
8272 | stb = mem_fileopen (); | |
8273 | old_chain = make_cleanup_ui_file_delete (stb); | |
8274 | ||
6ef284bd | 8275 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 8276 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
8277 | do_cleanups (old_chain); |
8278 | return str; | |
8279 | } | |
8280 | ||
c906108c SS |
8281 | /* Display a null-terminated packet on stdout, for debugging, using C |
8282 | string notation. */ | |
8283 | ||
8284 | static void | |
baa336ce | 8285 | print_packet (const char *buf) |
c906108c SS |
8286 | { |
8287 | puts_filtered ("\""); | |
43e526b9 | 8288 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8289 | puts_filtered ("\""); |
8290 | } | |
8291 | ||
8292 | int | |
baa336ce | 8293 | putpkt (const char *buf) |
c906108c SS |
8294 | { |
8295 | return putpkt_binary (buf, strlen (buf)); | |
8296 | } | |
8297 | ||
8298 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8299 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8300 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8301 | and for a possible /0 if we are debugging (remote_debug) and want |
8302 | to print the sent packet as a string. */ | |
c906108c SS |
8303 | |
8304 | static int | |
baa336ce | 8305 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8306 | { |
2d717e4f | 8307 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8308 | int i; |
8309 | unsigned char csum = 0; | |
224c3ddb | 8310 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8311 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8312 | |
c906108c SS |
8313 | int ch; |
8314 | int tcount = 0; | |
8315 | char *p; | |
8316 | ||
e24a49d8 PA |
8317 | /* Catch cases like trying to read memory or listing threads while |
8318 | we're waiting for a stop reply. The remote server wouldn't be | |
8319 | ready to handle this request, so we'd hang and timeout. We don't | |
8320 | have to worry about this in synchronous mode, because in that | |
8321 | case it's not possible to issue a command while the target is | |
74531fed PA |
8322 | running. This is not a problem in non-stop mode, because in that |
8323 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8324 | if (!target_is_non_stop_p () |
8325 | && target_is_async_p () | |
8326 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8327 | { |
8328 | error (_("Cannot execute this command while the target is running.\n" | |
8329 | "Use the \"interrupt\" command to stop the target\n" | |
8330 | "and then try again.")); | |
8331 | } | |
e24a49d8 | 8332 | |
2d717e4f DJ |
8333 | /* We're sending out a new packet. Make sure we don't look at a |
8334 | stale cached response. */ | |
8335 | rs->cached_wait_status = 0; | |
8336 | ||
c906108c SS |
8337 | /* Copy the packet into buffer BUF2, encapsulating it |
8338 | and giving it a checksum. */ | |
8339 | ||
c906108c SS |
8340 | p = buf2; |
8341 | *p++ = '$'; | |
8342 | ||
8343 | for (i = 0; i < cnt; i++) | |
8344 | { | |
8345 | csum += buf[i]; | |
8346 | *p++ = buf[i]; | |
8347 | } | |
8348 | *p++ = '#'; | |
8349 | *p++ = tohex ((csum >> 4) & 0xf); | |
8350 | *p++ = tohex (csum & 0xf); | |
8351 | ||
8352 | /* Send it over and over until we get a positive ack. */ | |
8353 | ||
8354 | while (1) | |
8355 | { | |
8356 | int started_error_output = 0; | |
8357 | ||
8358 | if (remote_debug) | |
8359 | { | |
6e5abd65 PA |
8360 | struct cleanup *old_chain; |
8361 | char *str; | |
8362 | ||
c906108c | 8363 | *p = '\0'; |
6e5abd65 PA |
8364 | str = escape_buffer (buf2, p - buf2); |
8365 | old_chain = make_cleanup (xfree, str); | |
8366 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 8367 | gdb_flush (gdb_stdlog); |
6e5abd65 | 8368 | do_cleanups (old_chain); |
c906108c | 8369 | } |
c33e31fd | 8370 | remote_serial_write (buf2, p - buf2); |
c906108c | 8371 | |
a6f3e723 SL |
8372 | /* If this is a no acks version of the remote protocol, send the |
8373 | packet and move on. */ | |
8374 | if (rs->noack_mode) | |
8375 | break; | |
8376 | ||
74531fed PA |
8377 | /* Read until either a timeout occurs (-2) or '+' is read. |
8378 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8379 | while (1) |
8380 | { | |
8381 | ch = readchar (remote_timeout); | |
8382 | ||
c5aa993b | 8383 | if (remote_debug) |
c906108c SS |
8384 | { |
8385 | switch (ch) | |
8386 | { | |
8387 | case '+': | |
1216fa2c | 8388 | case '-': |
c906108c SS |
8389 | case SERIAL_TIMEOUT: |
8390 | case '$': | |
74531fed | 8391 | case '%': |
c906108c SS |
8392 | if (started_error_output) |
8393 | { | |
8394 | putchar_unfiltered ('\n'); | |
8395 | started_error_output = 0; | |
8396 | } | |
8397 | } | |
8398 | } | |
8399 | ||
8400 | switch (ch) | |
8401 | { | |
8402 | case '+': | |
8403 | if (remote_debug) | |
0f71a2f6 | 8404 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8405 | do_cleanups (old_chain); |
c906108c | 8406 | return 1; |
1216fa2c AC |
8407 | case '-': |
8408 | if (remote_debug) | |
8409 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8410 | /* FALLTHROUGH */ |
c906108c | 8411 | case SERIAL_TIMEOUT: |
c5aa993b | 8412 | tcount++; |
c906108c | 8413 | if (tcount > 3) |
a5c0808e PA |
8414 | { |
8415 | do_cleanups (old_chain); | |
8416 | return 0; | |
8417 | } | |
23860348 | 8418 | break; /* Retransmit buffer. */ |
c906108c SS |
8419 | case '$': |
8420 | { | |
40e3f985 | 8421 | if (remote_debug) |
2bc416ba | 8422 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8423 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8424 | /* It's probably an old response sent because an ACK |
8425 | was lost. Gobble up the packet and ack it so it | |
8426 | doesn't get retransmitted when we resend this | |
8427 | packet. */ | |
6d820c5c | 8428 | skip_frame (); |
c33e31fd | 8429 | remote_serial_write ("+", 1); |
23860348 | 8430 | continue; /* Now, go look for +. */ |
c906108c | 8431 | } |
74531fed PA |
8432 | |
8433 | case '%': | |
8434 | { | |
8435 | int val; | |
8436 | ||
8437 | /* If we got a notification, handle it, and go back to looking | |
8438 | for an ack. */ | |
8439 | /* We've found the start of a notification. Now | |
8440 | collect the data. */ | |
8441 | val = read_frame (&rs->buf, &rs->buf_size); | |
8442 | if (val >= 0) | |
8443 | { | |
8444 | if (remote_debug) | |
8445 | { | |
6e5abd65 PA |
8446 | struct cleanup *old_chain; |
8447 | char *str; | |
8448 | ||
8449 | str = escape_buffer (rs->buf, val); | |
8450 | old_chain = make_cleanup (xfree, str); | |
8451 | fprintf_unfiltered (gdb_stdlog, | |
8452 | " Notification received: %s\n", | |
8453 | str); | |
8454 | do_cleanups (old_chain); | |
74531fed | 8455 | } |
5965e028 | 8456 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8457 | /* We're in sync now, rewait for the ack. */ |
8458 | tcount = 0; | |
8459 | } | |
8460 | else | |
8461 | { | |
8462 | if (remote_debug) | |
8463 | { | |
8464 | if (!started_error_output) | |
8465 | { | |
8466 | started_error_output = 1; | |
8467 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8468 | } | |
8469 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8470 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8471 | } | |
8472 | } | |
8473 | continue; | |
8474 | } | |
8475 | /* fall-through */ | |
c906108c SS |
8476 | default: |
8477 | if (remote_debug) | |
8478 | { | |
8479 | if (!started_error_output) | |
8480 | { | |
8481 | started_error_output = 1; | |
0f71a2f6 | 8482 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8483 | } |
0f71a2f6 | 8484 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8485 | } |
8486 | continue; | |
8487 | } | |
23860348 | 8488 | break; /* Here to retransmit. */ |
c906108c SS |
8489 | } |
8490 | ||
8491 | #if 0 | |
8492 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8493 | able to get out next time we call QUIT, without anything as |
8494 | violent as interrupt_query. If we want to provide a way out of | |
8495 | here without getting to the next QUIT, it should be based on | |
8496 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8497 | if (quit_flag) |
8498 | { | |
8499 | quit_flag = 0; | |
8500 | interrupt_query (); | |
8501 | } | |
8502 | #endif | |
8503 | } | |
a5c0808e PA |
8504 | |
8505 | do_cleanups (old_chain); | |
a6f3e723 | 8506 | return 0; |
c906108c SS |
8507 | } |
8508 | ||
6d820c5c DJ |
8509 | /* Come here after finding the start of a frame when we expected an |
8510 | ack. Do our best to discard the rest of this packet. */ | |
8511 | ||
8512 | static void | |
8513 | skip_frame (void) | |
8514 | { | |
8515 | int c; | |
8516 | ||
8517 | while (1) | |
8518 | { | |
8519 | c = readchar (remote_timeout); | |
8520 | switch (c) | |
8521 | { | |
8522 | case SERIAL_TIMEOUT: | |
8523 | /* Nothing we can do. */ | |
8524 | return; | |
8525 | case '#': | |
8526 | /* Discard the two bytes of checksum and stop. */ | |
8527 | c = readchar (remote_timeout); | |
8528 | if (c >= 0) | |
8529 | c = readchar (remote_timeout); | |
8530 | ||
8531 | return; | |
8532 | case '*': /* Run length encoding. */ | |
8533 | /* Discard the repeat count. */ | |
8534 | c = readchar (remote_timeout); | |
8535 | if (c < 0) | |
8536 | return; | |
8537 | break; | |
8538 | default: | |
8539 | /* A regular character. */ | |
8540 | break; | |
8541 | } | |
8542 | } | |
8543 | } | |
8544 | ||
c906108c | 8545 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8546 | into *BUF, verifying the checksum, length, and handling run-length |
8547 | compression. NUL terminate the buffer. If there is not enough room, | |
8548 | expand *BUF using xrealloc. | |
c906108c | 8549 | |
c2d11a7d JM |
8550 | Returns -1 on error, number of characters in buffer (ignoring the |
8551 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8552 | SERIAL status indications). */ |
c2d11a7d JM |
8553 | |
8554 | static long | |
6d820c5c DJ |
8555 | read_frame (char **buf_p, |
8556 | long *sizeof_buf) | |
c906108c SS |
8557 | { |
8558 | unsigned char csum; | |
c2d11a7d | 8559 | long bc; |
c906108c | 8560 | int c; |
6d820c5c | 8561 | char *buf = *buf_p; |
a6f3e723 | 8562 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8563 | |
8564 | csum = 0; | |
c2d11a7d | 8565 | bc = 0; |
c906108c SS |
8566 | |
8567 | while (1) | |
8568 | { | |
8569 | c = readchar (remote_timeout); | |
c906108c SS |
8570 | switch (c) |
8571 | { | |
8572 | case SERIAL_TIMEOUT: | |
8573 | if (remote_debug) | |
0f71a2f6 | 8574 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8575 | return -1; |
c906108c SS |
8576 | case '$': |
8577 | if (remote_debug) | |
0f71a2f6 JM |
8578 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8579 | gdb_stdlog); | |
23860348 | 8580 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8581 | case '#': |
8582 | { | |
8583 | unsigned char pktcsum; | |
e1b09194 AC |
8584 | int check_0 = 0; |
8585 | int check_1 = 0; | |
c906108c | 8586 | |
c2d11a7d | 8587 | buf[bc] = '\0'; |
c906108c | 8588 | |
e1b09194 AC |
8589 | check_0 = readchar (remote_timeout); |
8590 | if (check_0 >= 0) | |
8591 | check_1 = readchar (remote_timeout); | |
802188a7 | 8592 | |
e1b09194 AC |
8593 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8594 | { | |
8595 | if (remote_debug) | |
2bc416ba | 8596 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8597 | gdb_stdlog); |
e1b09194 AC |
8598 | return -1; |
8599 | } | |
8600 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8601 | { |
8602 | if (remote_debug) | |
2bc416ba | 8603 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8604 | gdb_stdlog); |
40e3f985 FN |
8605 | return -1; |
8606 | } | |
c906108c | 8607 | |
a6f3e723 SL |
8608 | /* Don't recompute the checksum; with no ack packets we |
8609 | don't have any way to indicate a packet retransmission | |
8610 | is necessary. */ | |
8611 | if (rs->noack_mode) | |
8612 | return bc; | |
8613 | ||
e1b09194 | 8614 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8615 | if (csum == pktcsum) |
c2d11a7d | 8616 | return bc; |
c906108c | 8617 | |
c5aa993b | 8618 | if (remote_debug) |
c906108c | 8619 | { |
6e5abd65 PA |
8620 | struct cleanup *old_chain; |
8621 | char *str; | |
8622 | ||
8623 | str = escape_buffer (buf, bc); | |
8624 | old_chain = make_cleanup (xfree, str); | |
8625 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8626 | "Bad checksum, sentsum=0x%x, " |
8627 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8628 | pktcsum, csum, str); |
8629 | do_cleanups (old_chain); | |
c906108c | 8630 | } |
c2d11a7d | 8631 | /* Number of characters in buffer ignoring trailing |
23860348 | 8632 | NULL. */ |
c2d11a7d | 8633 | return -1; |
c906108c | 8634 | } |
23860348 | 8635 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8636 | { |
8637 | int repeat; | |
c906108c | 8638 | |
a744cf53 | 8639 | csum += c; |
b4501125 AC |
8640 | c = readchar (remote_timeout); |
8641 | csum += c; | |
23860348 | 8642 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8643 | |
23860348 | 8644 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8645 | |
6d820c5c | 8646 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8647 | { |
6d820c5c DJ |
8648 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8649 | { | |
8650 | /* Make some more room in the buffer. */ | |
8651 | *sizeof_buf += repeat; | |
224c3ddb | 8652 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8653 | buf = *buf_p; |
8654 | } | |
8655 | ||
c2d11a7d JM |
8656 | memset (&buf[bc], buf[bc - 1], repeat); |
8657 | bc += repeat; | |
c2c6d25f JM |
8658 | continue; |
8659 | } | |
8660 | ||
c2d11a7d | 8661 | buf[bc] = '\0'; |
6d820c5c | 8662 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8663 | return -1; |
c2c6d25f | 8664 | } |
c906108c | 8665 | default: |
6d820c5c | 8666 | if (bc >= *sizeof_buf - 1) |
c906108c | 8667 | { |
6d820c5c DJ |
8668 | /* Make some more room in the buffer. */ |
8669 | *sizeof_buf *= 2; | |
224c3ddb | 8670 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 8671 | buf = *buf_p; |
c906108c SS |
8672 | } |
8673 | ||
6d820c5c DJ |
8674 | buf[bc++] = c; |
8675 | csum += c; | |
8676 | continue; | |
c906108c SS |
8677 | } |
8678 | } | |
8679 | } | |
8680 | ||
8681 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8682 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8683 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8684 | rather than timing out; this is used (in synchronous mode) to wait | |
8685 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8686 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8687 | don't have to change all the calls to getpkt to deal with the | |
8688 | return value, because at the moment I don't know what the right | |
23860348 | 8689 | thing to do it for those. */ |
c906108c | 8690 | void |
6d820c5c DJ |
8691 | getpkt (char **buf, |
8692 | long *sizeof_buf, | |
c2d11a7d | 8693 | int forever) |
d9fcf2fb | 8694 | { |
54887903 | 8695 | getpkt_sane (buf, sizeof_buf, forever); |
d9fcf2fb JM |
8696 | } |
8697 | ||
8698 | ||
8699 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8700 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8701 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8702 | rather than timing out; this is used (in synchronous mode) to wait | |
8703 | for a target that is is executing user code to stop. If FOREVER == | |
8704 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8705 | indication of this to the caller. Otherwise return the number of |
8706 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8707 | enough reason to return to the caller. *IS_NOTIF is an output |
8708 | boolean that indicates whether *BUF holds a notification or not | |
8709 | (a regular packet). */ | |
74531fed | 8710 | |
3172dc30 | 8711 | static int |
74531fed | 8712 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8713 | int expecting_notif, int *is_notif) |
c906108c | 8714 | { |
2d717e4f | 8715 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8716 | int c; |
8717 | int tries; | |
8718 | int timeout; | |
df4b58fe | 8719 | int val = -1; |
c906108c | 8720 | |
2d717e4f DJ |
8721 | /* We're reading a new response. Make sure we don't look at a |
8722 | previously cached response. */ | |
8723 | rs->cached_wait_status = 0; | |
8724 | ||
6d820c5c | 8725 | strcpy (*buf, "timeout"); |
c906108c SS |
8726 | |
8727 | if (forever) | |
74531fed PA |
8728 | timeout = watchdog > 0 ? watchdog : -1; |
8729 | else if (expecting_notif) | |
8730 | timeout = 0; /* There should already be a char in the buffer. If | |
8731 | not, bail out. */ | |
c906108c SS |
8732 | else |
8733 | timeout = remote_timeout; | |
8734 | ||
8735 | #define MAX_TRIES 3 | |
8736 | ||
74531fed PA |
8737 | /* Process any number of notifications, and then return when |
8738 | we get a packet. */ | |
8739 | for (;;) | |
c906108c | 8740 | { |
d9c43928 | 8741 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8742 | times. */ |
8743 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8744 | { |
74531fed PA |
8745 | /* This can loop forever if the remote side sends us |
8746 | characters continuously, but if it pauses, we'll get | |
8747 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8748 | we'll count that as a retry. | |
8749 | ||
8750 | Note that even when forever is set, we will only wait | |
8751 | forever prior to the start of a packet. After that, we | |
8752 | expect characters to arrive at a brisk pace. They should | |
8753 | show up within remote_timeout intervals. */ | |
8754 | do | |
8755 | c = readchar (timeout); | |
8756 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8757 | |
8758 | if (c == SERIAL_TIMEOUT) | |
8759 | { | |
74531fed PA |
8760 | if (expecting_notif) |
8761 | return -1; /* Don't complain, it's normal to not get | |
8762 | anything in this case. */ | |
8763 | ||
23860348 | 8764 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8765 | { |
2acceee2 | 8766 | QUIT; |
78a095c3 | 8767 | remote_unpush_target (); |
598d3636 JK |
8768 | throw_error (TARGET_CLOSE_ERROR, |
8769 | _("Watchdog timeout has expired. " | |
8770 | "Target detached.")); | |
c906108c | 8771 | } |
c906108c | 8772 | if (remote_debug) |
0f71a2f6 | 8773 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8774 | } |
74531fed PA |
8775 | else |
8776 | { | |
8777 | /* We've found the start of a packet or notification. | |
8778 | Now collect the data. */ | |
8779 | val = read_frame (buf, sizeof_buf); | |
8780 | if (val >= 0) | |
8781 | break; | |
8782 | } | |
8783 | ||
c33e31fd | 8784 | remote_serial_write ("-", 1); |
c906108c | 8785 | } |
c906108c | 8786 | |
74531fed PA |
8787 | if (tries > MAX_TRIES) |
8788 | { | |
8789 | /* We have tried hard enough, and just can't receive the | |
8790 | packet/notification. Give up. */ | |
8791 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8792 | |
74531fed PA |
8793 | /* Skip the ack char if we're in no-ack mode. */ |
8794 | if (!rs->noack_mode) | |
c33e31fd | 8795 | remote_serial_write ("+", 1); |
74531fed PA |
8796 | return -1; |
8797 | } | |
c906108c | 8798 | |
74531fed PA |
8799 | /* If we got an ordinary packet, return that to our caller. */ |
8800 | if (c == '$') | |
c906108c SS |
8801 | { |
8802 | if (remote_debug) | |
43e526b9 | 8803 | { |
6e5abd65 PA |
8804 | struct cleanup *old_chain; |
8805 | char *str; | |
8806 | ||
8807 | str = escape_buffer (*buf, val); | |
8808 | old_chain = make_cleanup (xfree, str); | |
8809 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8810 | do_cleanups (old_chain); | |
43e526b9 | 8811 | } |
a6f3e723 SL |
8812 | |
8813 | /* Skip the ack char if we're in no-ack mode. */ | |
8814 | if (!rs->noack_mode) | |
c33e31fd | 8815 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8816 | if (is_notif != NULL) |
8817 | *is_notif = 0; | |
0876f84a | 8818 | return val; |
c906108c SS |
8819 | } |
8820 | ||
74531fed PA |
8821 | /* If we got a notification, handle it, and go back to looking |
8822 | for a packet. */ | |
8823 | else | |
8824 | { | |
8825 | gdb_assert (c == '%'); | |
8826 | ||
8827 | if (remote_debug) | |
8828 | { | |
6e5abd65 PA |
8829 | struct cleanup *old_chain; |
8830 | char *str; | |
8831 | ||
8832 | str = escape_buffer (*buf, val); | |
8833 | old_chain = make_cleanup (xfree, str); | |
8834 | fprintf_unfiltered (gdb_stdlog, | |
8835 | " Notification received: %s\n", | |
8836 | str); | |
8837 | do_cleanups (old_chain); | |
74531fed | 8838 | } |
fee9eda9 YQ |
8839 | if (is_notif != NULL) |
8840 | *is_notif = 1; | |
c906108c | 8841 | |
5965e028 | 8842 | handle_notification (rs->notif_state, *buf); |
c906108c | 8843 | |
74531fed | 8844 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8845 | |
74531fed | 8846 | if (expecting_notif) |
fee9eda9 | 8847 | return val; |
74531fed PA |
8848 | } |
8849 | } | |
8850 | } | |
8851 | ||
8852 | static int | |
8853 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8854 | { | |
fee9eda9 | 8855 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8856 | } |
8857 | ||
8858 | static int | |
fee9eda9 YQ |
8859 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8860 | int *is_notif) | |
74531fed | 8861 | { |
fee9eda9 YQ |
8862 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8863 | is_notif); | |
c906108c | 8864 | } |
74531fed | 8865 | |
cbb8991c DB |
8866 | /* Check whether EVENT is a fork event for the process specified |
8867 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8868 | ||
8869 | static int | |
8870 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8871 | QUEUE_ITER (stop_reply_p) *iter, | |
8872 | stop_reply_p event, | |
8873 | void *data) | |
8874 | { | |
19ba03f4 | 8875 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
8876 | int parent_pid = *(int *) param->input; |
8877 | ||
8878 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8879 | { | |
8880 | struct remote_state *rs = get_remote_state (); | |
8881 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8882 | int res; | |
8883 | ||
8884 | res = remote_vkill (child_pid, rs); | |
8885 | if (res != 0) | |
8886 | error (_("Can't kill fork child process %d"), child_pid); | |
8887 | } | |
8888 | ||
8889 | return 1; | |
8890 | } | |
8891 | ||
8892 | /* Kill any new fork children of process PID that haven't been | |
8893 | processed by follow_fork. */ | |
8894 | ||
8895 | static void | |
8896 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8897 | { | |
8898 | struct thread_info *thread; | |
8899 | struct notif_client *notif = ¬if_client_stop; | |
8900 | struct queue_iter_param param; | |
8901 | ||
8902 | /* Kill the fork child threads of any threads in process PID | |
8903 | that are stopped at a fork event. */ | |
8904 | ALL_NON_EXITED_THREADS (thread) | |
8905 | { | |
8906 | struct target_waitstatus *ws = &thread->pending_follow; | |
8907 | ||
8908 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8909 | { | |
8910 | struct remote_state *rs = get_remote_state (); | |
8911 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8912 | int res; | |
8913 | ||
8914 | res = remote_vkill (child_pid, rs); | |
8915 | if (res != 0) | |
8916 | error (_("Can't kill fork child process %d"), child_pid); | |
8917 | } | |
8918 | } | |
8919 | ||
8920 | /* Check for any pending fork events (not reported or processed yet) | |
8921 | in process PID and kill those fork child threads as well. */ | |
8922 | remote_notif_get_pending_events (notif); | |
8923 | param.input = &pid; | |
8924 | param.output = NULL; | |
8925 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8926 | kill_child_of_pending_fork, ¶m); | |
8927 | } | |
8928 | ||
c906108c | 8929 | \f |
8020350c DB |
8930 | /* Target hook to kill the current inferior. */ |
8931 | ||
c906108c | 8932 | static void |
7d85a9c0 | 8933 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8934 | { |
8020350c DB |
8935 | int res = -1; |
8936 | int pid = ptid_get_pid (inferior_ptid); | |
8937 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 8938 | |
8020350c | 8939 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 8940 | { |
8020350c DB |
8941 | /* If we're stopped while forking and we haven't followed yet, |
8942 | kill the child task. We need to do this before killing the | |
8943 | parent task because if this is a vfork then the parent will | |
8944 | be sleeping. */ | |
8945 | kill_new_fork_children (pid, rs); | |
8946 | ||
8947 | res = remote_vkill (pid, rs); | |
8948 | if (res == 0) | |
0fdf84ca | 8949 | { |
8020350c | 8950 | target_mourn_inferior (); |
0fdf84ca PA |
8951 | return; |
8952 | } | |
8020350c | 8953 | } |
0fdf84ca | 8954 | |
8020350c DB |
8955 | /* If we are in 'target remote' mode and we are killing the only |
8956 | inferior, then we will tell gdbserver to exit and unpush the | |
8957 | target. */ | |
8958 | if (res == -1 && !remote_multi_process_p (rs) | |
8959 | && number_of_live_inferiors () == 1) | |
8960 | { | |
8961 | remote_kill_k (); | |
8962 | ||
8963 | /* We've killed the remote end, we get to mourn it. If we are | |
8964 | not in extended mode, mourning the inferior also unpushes | |
8965 | remote_ops from the target stack, which closes the remote | |
8966 | connection. */ | |
8967 | target_mourn_inferior (); | |
8968 | ||
8969 | return; | |
0fdf84ca | 8970 | } |
43ff13b4 | 8971 | |
8020350c | 8972 | error (_("Can't kill process")); |
43ff13b4 JM |
8973 | } |
8974 | ||
8020350c DB |
8975 | /* Send a kill request to the target using the 'vKill' packet. */ |
8976 | ||
82f73884 PA |
8977 | static int |
8978 | remote_vkill (int pid, struct remote_state *rs) | |
8979 | { | |
4082afcc | 8980 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8981 | return -1; |
8982 | ||
8983 | /* Tell the remote target to detach. */ | |
bba74b36 | 8984 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8985 | putpkt (rs->buf); |
8986 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8987 | ||
4082afcc PA |
8988 | switch (packet_ok (rs->buf, |
8989 | &remote_protocol_packets[PACKET_vKill])) | |
8990 | { | |
8991 | case PACKET_OK: | |
8992 | return 0; | |
8993 | case PACKET_ERROR: | |
8994 | return 1; | |
8995 | case PACKET_UNKNOWN: | |
8996 | return -1; | |
8997 | default: | |
8998 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8999 | } | |
82f73884 PA |
9000 | } |
9001 | ||
8020350c DB |
9002 | /* Send a kill request to the target using the 'k' packet. */ |
9003 | ||
82f73884 | 9004 | static void |
8020350c | 9005 | remote_kill_k (void) |
82f73884 | 9006 | { |
8020350c DB |
9007 | /* Catch errors so the user can quit from gdb even when we |
9008 | aren't on speaking terms with the remote system. */ | |
9009 | TRY | |
82f73884 | 9010 | { |
82f73884 | 9011 | putpkt ("k"); |
82f73884 | 9012 | } |
8020350c DB |
9013 | CATCH (ex, RETURN_MASK_ERROR) |
9014 | { | |
9015 | if (ex.error == TARGET_CLOSE_ERROR) | |
9016 | { | |
9017 | /* If we got an (EOF) error that caused the target | |
9018 | to go away, then we're done, that's what we wanted. | |
9019 | "k" is susceptible to cause a premature EOF, given | |
9020 | that the remote server isn't actually required to | |
9021 | reply to "k", and it can happen that it doesn't | |
9022 | even get to reply ACK to the "k". */ | |
9023 | return; | |
9024 | } | |
82f73884 | 9025 | |
8020350c DB |
9026 | /* Otherwise, something went wrong. We didn't actually kill |
9027 | the target. Just propagate the exception, and let the | |
9028 | user or higher layers decide what to do. */ | |
9029 | throw_exception (ex); | |
9030 | } | |
9031 | END_CATCH | |
82f73884 PA |
9032 | } |
9033 | ||
c906108c | 9034 | static void |
20f796c9 | 9035 | remote_mourn (struct target_ops *target) |
c906108c | 9036 | { |
8020350c | 9037 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9038 | |
8020350c DB |
9039 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9040 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9041 | { | |
9042 | unpush_target (target); | |
c906108c | 9043 | |
8020350c DB |
9044 | /* remote_close takes care of doing most of the clean up. */ |
9045 | generic_mourn_inferior (); | |
9046 | return; | |
9047 | } | |
c906108c | 9048 | |
e24a49d8 PA |
9049 | /* In case we got here due to an error, but we're going to stay |
9050 | connected. */ | |
9051 | rs->waiting_for_stop_reply = 0; | |
9052 | ||
dc1981d7 PA |
9053 | /* If the current general thread belonged to the process we just |
9054 | detached from or has exited, the remote side current general | |
9055 | thread becomes undefined. Considering a case like this: | |
9056 | ||
9057 | - We just got here due to a detach. | |
9058 | - The process that we're detaching from happens to immediately | |
9059 | report a global breakpoint being hit in non-stop mode, in the | |
9060 | same thread we had selected before. | |
9061 | - GDB attaches to this process again. | |
9062 | - This event happens to be the next event we handle. | |
9063 | ||
9064 | GDB would consider that the current general thread didn't need to | |
9065 | be set on the stub side (with Hg), since for all it knew, | |
9066 | GENERAL_THREAD hadn't changed. | |
9067 | ||
9068 | Notice that although in all-stop mode, the remote server always | |
9069 | sets the current thread to the thread reporting the stop event, | |
9070 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9071 | not* change the current thread when reporting a breakpoint hit, | |
9072 | due to the decoupling of event reporting and event handling. | |
9073 | ||
9074 | To keep things simple, we always invalidate our notion of the | |
9075 | current thread. */ | |
47f8a51d | 9076 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9077 | |
8020350c | 9078 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9079 | generic_mourn_inferior (); |
9080 | ||
d729566a | 9081 | if (!have_inferiors ()) |
2d717e4f | 9082 | { |
82f73884 PA |
9083 | if (!remote_multi_process_p (rs)) |
9084 | { | |
9085 | /* Check whether the target is running now - some remote stubs | |
9086 | automatically restart after kill. */ | |
9087 | putpkt ("?"); | |
9088 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9089 | ||
9090 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9091 | { | |
3e43a32a MS |
9092 | /* Assume that the target has been restarted. Set |
9093 | inferior_ptid so that bits of core GDB realizes | |
9094 | there's something here, e.g., so that the user can | |
9095 | say "kill" again. */ | |
82f73884 PA |
9096 | inferior_ptid = magic_null_ptid; |
9097 | } | |
82f73884 | 9098 | } |
2d717e4f DJ |
9099 | } |
9100 | } | |
c906108c | 9101 | |
03583c20 | 9102 | static int |
2bfc0540 | 9103 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9104 | { |
4082afcc | 9105 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9106 | } |
9107 | ||
9108 | static void | |
9109 | extended_remote_disable_randomization (int val) | |
9110 | { | |
9111 | struct remote_state *rs = get_remote_state (); | |
9112 | char *reply; | |
9113 | ||
bba74b36 YQ |
9114 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9115 | val); | |
03583c20 UW |
9116 | putpkt (rs->buf); |
9117 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9118 | if (*reply == '\0') | |
9119 | error (_("Target does not support QDisableRandomization.")); | |
9120 | if (strcmp (reply, "OK") != 0) | |
9121 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9122 | } | |
9123 | ||
2d717e4f DJ |
9124 | static int |
9125 | extended_remote_run (char *args) | |
9126 | { | |
9127 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9128 | int len; |
94585166 | 9129 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9130 | |
2d717e4f DJ |
9131 | /* If the user has disabled vRun support, or we have detected that |
9132 | support is not available, do not try it. */ | |
4082afcc | 9133 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9134 | return -1; |
424163ea | 9135 | |
2d717e4f DJ |
9136 | strcpy (rs->buf, "vRun;"); |
9137 | len = strlen (rs->buf); | |
c906108c | 9138 | |
2d717e4f DJ |
9139 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9140 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9141 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9142 | strlen (remote_exec_file)); | |
2d717e4f | 9143 | |
d1a41061 | 9144 | gdb_assert (args != NULL); |
2d717e4f DJ |
9145 | if (*args) |
9146 | { | |
9147 | struct cleanup *back_to; | |
9148 | int i; | |
9149 | char **argv; | |
9150 | ||
d1a41061 | 9151 | argv = gdb_buildargv (args); |
6e366df1 | 9152 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
9153 | for (i = 0; argv[i] != NULL; i++) |
9154 | { | |
9155 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9156 | error (_("Argument list too long for run packet")); | |
9157 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9158 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9159 | strlen (argv[i])); | |
2d717e4f DJ |
9160 | } |
9161 | do_cleanups (back_to); | |
9162 | } | |
9163 | ||
9164 | rs->buf[len++] = '\0'; | |
9165 | ||
9166 | putpkt (rs->buf); | |
9167 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9168 | ||
4082afcc | 9169 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9170 | { |
4082afcc | 9171 | case PACKET_OK: |
3405876a | 9172 | /* We have a wait response. All is well. */ |
2d717e4f | 9173 | return 0; |
4082afcc PA |
9174 | case PACKET_UNKNOWN: |
9175 | return -1; | |
9176 | case PACKET_ERROR: | |
2d717e4f DJ |
9177 | if (remote_exec_file[0] == '\0') |
9178 | error (_("Running the default executable on the remote target failed; " | |
9179 | "try \"set remote exec-file\"?")); | |
9180 | else | |
9181 | error (_("Running \"%s\" on the remote target failed"), | |
9182 | remote_exec_file); | |
4082afcc PA |
9183 | default: |
9184 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9185 | } |
c906108c SS |
9186 | } |
9187 | ||
2d717e4f DJ |
9188 | /* In the extended protocol we want to be able to do things like |
9189 | "run" and have them basically work as expected. So we need | |
9190 | a special create_inferior function. We support changing the | |
9191 | executable file and the command line arguments, but not the | |
9192 | environment. */ | |
9193 | ||
43ff13b4 | 9194 | static void |
77a19445 TT |
9195 | extended_remote_create_inferior (struct target_ops *ops, |
9196 | char *exec_file, char *args, | |
9197 | char **env, int from_tty) | |
43ff13b4 | 9198 | { |
3405876a PA |
9199 | int run_worked; |
9200 | char *stop_reply; | |
9201 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9202 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9203 | |
43ff13b4 | 9204 | /* If running asynchronously, register the target file descriptor |
23860348 | 9205 | with the event loop. */ |
75c99385 | 9206 | if (target_can_async_p ()) |
6a3753b3 | 9207 | target_async (1); |
43ff13b4 | 9208 | |
03583c20 | 9209 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9210 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9211 | extended_remote_disable_randomization (disable_randomization); |
9212 | ||
43ff13b4 | 9213 | /* Now restart the remote server. */ |
3405876a PA |
9214 | run_worked = extended_remote_run (args) != -1; |
9215 | if (!run_worked) | |
2d717e4f DJ |
9216 | { |
9217 | /* vRun was not supported. Fail if we need it to do what the | |
9218 | user requested. */ | |
9219 | if (remote_exec_file[0]) | |
9220 | error (_("Remote target does not support \"set remote exec-file\"")); | |
9221 | if (args[0]) | |
9222 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 9223 | |
2d717e4f DJ |
9224 | /* Fall back to "R". */ |
9225 | extended_remote_restart (); | |
9226 | } | |
424163ea | 9227 | |
6c95b8df PA |
9228 | if (!have_inferiors ()) |
9229 | { | |
9230 | /* Clean up from the last time we ran, before we mark the target | |
9231 | running again. This will mark breakpoints uninserted, and | |
9232 | get_offsets may insert breakpoints. */ | |
9233 | init_thread_list (); | |
9234 | init_wait_for_inferior (); | |
9235 | } | |
45280a52 | 9236 | |
3405876a PA |
9237 | /* vRun's success return is a stop reply. */ |
9238 | stop_reply = run_worked ? rs->buf : NULL; | |
9239 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9240 | |
2d717e4f DJ |
9241 | /* Get updated offsets, if the stub uses qOffsets. */ |
9242 | get_offsets (); | |
2d717e4f | 9243 | } |
c906108c | 9244 | \f |
c5aa993b | 9245 | |
b775012e LM |
9246 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9247 | the list of conditions (in agent expression bytecode format), if any, the | |
9248 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9249 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9250 | |
9251 | static int | |
9252 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9253 | struct bp_target_info *bp_tgt, char *buf, |
9254 | char *buf_end) | |
b775012e LM |
9255 | { |
9256 | struct agent_expr *aexpr = NULL; | |
9257 | int i, ix; | |
b775012e LM |
9258 | |
9259 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
9260 | return 0; | |
9261 | ||
9262 | buf += strlen (buf); | |
bba74b36 | 9263 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9264 | buf++; |
9265 | ||
9266 | /* Send conditions to the target and free the vector. */ | |
9267 | for (ix = 0; | |
9268 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
9269 | ix++) | |
9270 | { | |
bba74b36 | 9271 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
9272 | buf += strlen (buf); |
9273 | for (i = 0; i < aexpr->len; ++i) | |
9274 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9275 | *buf = '\0'; | |
9276 | } | |
b775012e LM |
9277 | return 0; |
9278 | } | |
9279 | ||
d3ce09f5 SS |
9280 | static void |
9281 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9282 | struct bp_target_info *bp_tgt, char *buf) | |
9283 | { | |
9284 | struct agent_expr *aexpr = NULL; | |
9285 | int i, ix; | |
9286 | ||
9287 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9288 | return; | |
9289 | ||
9290 | buf += strlen (buf); | |
9291 | ||
9292 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9293 | buf += strlen (buf); | |
9294 | ||
9295 | /* Concatenate all the agent expressions that are commands into the | |
9296 | cmds parameter. */ | |
9297 | for (ix = 0; | |
9298 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
9299 | ix++) | |
9300 | { | |
9301 | sprintf (buf, "X%x,", aexpr->len); | |
9302 | buf += strlen (buf); | |
9303 | for (i = 0; i < aexpr->len; ++i) | |
9304 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9305 | *buf = '\0'; | |
9306 | } | |
d3ce09f5 SS |
9307 | } |
9308 | ||
8181d85f DJ |
9309 | /* Insert a breakpoint. On targets that have software breakpoint |
9310 | support, we ask the remote target to do the work; on targets | |
9311 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9312 | |
9313 | static int | |
3db08215 MM |
9314 | remote_insert_breakpoint (struct target_ops *ops, |
9315 | struct gdbarch *gdbarch, | |
a6d9a66e | 9316 | struct bp_target_info *bp_tgt) |
c906108c | 9317 | { |
d471ea57 AC |
9318 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9319 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9320 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9321 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9322 | |
4082afcc | 9323 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9324 | { |
0d5ed153 | 9325 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9326 | struct remote_state *rs; |
bba74b36 | 9327 | char *p, *endbuf; |
7c0f6dcc | 9328 | int bpsize; |
4fff2411 | 9329 | |
28439a30 PA |
9330 | /* Make sure the remote is pointing at the right process, if |
9331 | necessary. */ | |
9332 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9333 | set_general_process (); | |
9334 | ||
a1dcb23a | 9335 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
9336 | |
9337 | rs = get_remote_state (); | |
9338 | p = rs->buf; | |
bba74b36 | 9339 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9340 | |
96baa820 JM |
9341 | *(p++) = 'Z'; |
9342 | *(p++) = '0'; | |
9343 | *(p++) = ','; | |
7c0f6dcc | 9344 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9345 | p += hexnumstr (p, addr); |
bba74b36 | 9346 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 9347 | |
efcc2da7 | 9348 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9349 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9350 | |
78eff0ec | 9351 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9352 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9353 | ||
6d820c5c DJ |
9354 | putpkt (rs->buf); |
9355 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9356 | |
6d820c5c | 9357 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9358 | { |
d471ea57 AC |
9359 | case PACKET_ERROR: |
9360 | return -1; | |
9361 | case PACKET_OK: | |
7c0f6dcc JL |
9362 | bp_tgt->placed_address = addr; |
9363 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9364 | return 0; |
9365 | case PACKET_UNKNOWN: | |
9366 | break; | |
96baa820 JM |
9367 | } |
9368 | } | |
c906108c | 9369 | |
0000e5cc PA |
9370 | /* If this breakpoint has target-side commands but this stub doesn't |
9371 | support Z0 packets, throw error. */ | |
9372 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9373 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
9374 | Target doesn't support breakpoints that have target side commands.")); | |
9375 | ||
3db08215 | 9376 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9377 | } |
9378 | ||
9379 | static int | |
3db08215 MM |
9380 | remote_remove_breakpoint (struct target_ops *ops, |
9381 | struct gdbarch *gdbarch, | |
a6d9a66e | 9382 | struct bp_target_info *bp_tgt) |
c906108c | 9383 | { |
8181d85f | 9384 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9385 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9386 | |
4082afcc | 9387 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9388 | { |
6d820c5c | 9389 | char *p = rs->buf; |
bba74b36 | 9390 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9391 | |
28439a30 PA |
9392 | /* Make sure the remote is pointing at the right process, if |
9393 | necessary. */ | |
9394 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9395 | set_general_process (); | |
9396 | ||
96baa820 JM |
9397 | *(p++) = 'z'; |
9398 | *(p++) = '0'; | |
9399 | *(p++) = ','; | |
9400 | ||
8181d85f DJ |
9401 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9402 | p += hexnumstr (p, addr); | |
bba74b36 | 9403 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 9404 | |
6d820c5c DJ |
9405 | putpkt (rs->buf); |
9406 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9407 | |
6d820c5c | 9408 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9409 | } |
9410 | ||
3db08215 | 9411 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9412 | } |
9413 | ||
f486487f | 9414 | static enum Z_packet_type |
d471ea57 AC |
9415 | watchpoint_to_Z_packet (int type) |
9416 | { | |
9417 | switch (type) | |
9418 | { | |
9419 | case hw_write: | |
bb858e6a | 9420 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9421 | break; |
9422 | case hw_read: | |
bb858e6a | 9423 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9424 | break; |
9425 | case hw_access: | |
bb858e6a | 9426 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9427 | break; |
9428 | default: | |
8e65ff28 | 9429 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9430 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9431 | } |
9432 | } | |
9433 | ||
3c3bea1c | 9434 | static int |
f486487f SM |
9435 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9436 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9437 | { |
d01949b6 | 9438 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9439 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9440 | char *p; |
d471ea57 | 9441 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9442 | |
4082afcc | 9443 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9444 | return 1; |
802188a7 | 9445 | |
28439a30 PA |
9446 | /* Make sure the remote is pointing at the right process, if |
9447 | necessary. */ | |
9448 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9449 | set_general_process (); | |
9450 | ||
bba74b36 | 9451 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9452 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9453 | addr = remote_address_masked (addr); |
9454 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9455 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9456 | |
6d820c5c DJ |
9457 | putpkt (rs->buf); |
9458 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9459 | |
6d820c5c | 9460 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9461 | { |
9462 | case PACKET_ERROR: | |
d471ea57 | 9463 | return -1; |
85d721b8 PA |
9464 | case PACKET_UNKNOWN: |
9465 | return 1; | |
d471ea57 AC |
9466 | case PACKET_OK: |
9467 | return 0; | |
9468 | } | |
8e65ff28 | 9469 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9470 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9471 | } |
9472 | ||
283002cf MR |
9473 | static int |
9474 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9475 | CORE_ADDR start, int length) | |
9476 | { | |
9477 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9478 | ||
9479 | return diff < length; | |
9480 | } | |
9481 | ||
d471ea57 | 9482 | |
3c3bea1c | 9483 | static int |
f486487f SM |
9484 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9485 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9486 | { |
d01949b6 | 9487 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9488 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9489 | char *p; |
d471ea57 AC |
9490 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9491 | ||
4082afcc | 9492 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9493 | return -1; |
802188a7 | 9494 | |
28439a30 PA |
9495 | /* Make sure the remote is pointing at the right process, if |
9496 | necessary. */ | |
9497 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9498 | set_general_process (); | |
9499 | ||
bba74b36 | 9500 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9501 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9502 | addr = remote_address_masked (addr); |
9503 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9504 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9505 | putpkt (rs->buf); |
9506 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9507 | |
6d820c5c | 9508 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9509 | { |
9510 | case PACKET_ERROR: | |
9511 | case PACKET_UNKNOWN: | |
9512 | return -1; | |
9513 | case PACKET_OK: | |
9514 | return 0; | |
9515 | } | |
8e65ff28 | 9516 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9517 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9518 | } |
9519 | ||
3c3bea1c | 9520 | |
501eef12 | 9521 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9522 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9523 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9524 | |
480a3f21 | 9525 | static int |
31568a15 TT |
9526 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9527 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9528 | { |
9529 | if (remote_hw_watchpoint_length_limit == 0) | |
9530 | return 0; | |
9531 | else if (remote_hw_watchpoint_length_limit < 0) | |
9532 | return 1; | |
9533 | else if (len <= remote_hw_watchpoint_length_limit) | |
9534 | return 1; | |
9535 | else | |
9536 | return 0; | |
9537 | } | |
9538 | ||
b9362cc7 | 9539 | static int |
5461485a | 9540 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9541 | enum bptype type, int cnt, int ot) |
96baa820 | 9542 | { |
3c3bea1c GS |
9543 | if (type == bp_hardware_breakpoint) |
9544 | { | |
9545 | if (remote_hw_breakpoint_limit == 0) | |
9546 | return 0; | |
501eef12 AC |
9547 | else if (remote_hw_breakpoint_limit < 0) |
9548 | return 1; | |
3c3bea1c GS |
9549 | else if (cnt <= remote_hw_breakpoint_limit) |
9550 | return 1; | |
9551 | } | |
9552 | else | |
9553 | { | |
9554 | if (remote_hw_watchpoint_limit == 0) | |
9555 | return 0; | |
501eef12 AC |
9556 | else if (remote_hw_watchpoint_limit < 0) |
9557 | return 1; | |
3c3bea1c GS |
9558 | else if (ot) |
9559 | return -1; | |
9560 | else if (cnt <= remote_hw_watchpoint_limit) | |
9561 | return 1; | |
9562 | } | |
9563 | return -1; | |
9564 | } | |
9565 | ||
f7e6eed5 PA |
9566 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9567 | ||
9568 | static int | |
9569 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9570 | { | |
799a2abe | 9571 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9572 | |
799a2abe PA |
9573 | return (thread->priv != NULL |
9574 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
9575 | } |
9576 | ||
9577 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9578 | remote. */ | |
9579 | ||
9580 | static int | |
9581 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9582 | { | |
f7e6eed5 PA |
9583 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
9584 | } | |
9585 | ||
9586 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9587 | ||
9588 | static int | |
9589 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9590 | { | |
799a2abe | 9591 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9592 | |
799a2abe PA |
9593 | return (thread->priv != NULL |
9594 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
9595 | } |
9596 | ||
9597 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9598 | remote. */ | |
9599 | ||
9600 | static int | |
9601 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9602 | { | |
f7e6eed5 PA |
9603 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
9604 | } | |
9605 | ||
b9362cc7 | 9606 | static int |
6a109b6b | 9607 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9608 | { |
799a2abe | 9609 | struct thread_info *thread = inferior_thread (); |
ee154bee | 9610 | |
799a2abe PA |
9611 | return (thread->priv != NULL |
9612 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
9613 | } |
9614 | ||
4aa7a7f5 JJ |
9615 | static int |
9616 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9617 | { |
799a2abe | 9618 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 9619 | |
799a2abe PA |
9620 | if (thread->priv != NULL |
9621 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 9622 | { |
799a2abe PA |
9623 | *addr_p = thread->priv->watch_data_address; |
9624 | return 1; | |
4aa7a7f5 JJ |
9625 | } |
9626 | ||
799a2abe | 9627 | return 0; |
3c3bea1c GS |
9628 | } |
9629 | ||
9630 | ||
9631 | static int | |
23a26771 | 9632 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9633 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9634 | { |
0d5ed153 | 9635 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9636 | struct remote_state *rs; |
bba74b36 | 9637 | char *p, *endbuf; |
dd61ec5c | 9638 | char *message; |
0d5ed153 | 9639 | int bpsize; |
802188a7 | 9640 | |
c8189ed1 | 9641 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9642 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9643 | |
0d5ed153 | 9644 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9645 | |
4082afcc | 9646 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9647 | return -1; |
2bc416ba | 9648 | |
28439a30 PA |
9649 | /* Make sure the remote is pointing at the right process, if |
9650 | necessary. */ | |
9651 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9652 | set_general_process (); | |
9653 | ||
4fff2411 JZ |
9654 | rs = get_remote_state (); |
9655 | p = rs->buf; | |
bba74b36 | 9656 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9657 | |
96baa820 JM |
9658 | *(p++) = 'Z'; |
9659 | *(p++) = '1'; | |
9660 | *(p++) = ','; | |
802188a7 | 9661 | |
0d5ed153 | 9662 | addr = remote_address_masked (addr); |
96baa820 | 9663 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9664 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9665 | |
efcc2da7 | 9666 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9667 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9668 | |
78eff0ec | 9669 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9670 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9671 | ||
6d820c5c DJ |
9672 | putpkt (rs->buf); |
9673 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9674 | |
6d820c5c | 9675 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9676 | { |
9677 | case PACKET_ERROR: | |
dd61ec5c MW |
9678 | if (rs->buf[1] == '.') |
9679 | { | |
9680 | message = strchr (rs->buf + 2, '.'); | |
9681 | if (message) | |
0316657e | 9682 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9683 | } |
9684 | return -1; | |
d471ea57 AC |
9685 | case PACKET_UNKNOWN: |
9686 | return -1; | |
9687 | case PACKET_OK: | |
0d5ed153 MR |
9688 | bp_tgt->placed_address = addr; |
9689 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9690 | return 0; |
9691 | } | |
8e65ff28 | 9692 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9693 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9694 | } |
9695 | ||
d471ea57 | 9696 | |
802188a7 | 9697 | static int |
a64dc96c | 9698 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9699 | struct bp_target_info *bp_tgt) |
96baa820 | 9700 | { |
8181d85f | 9701 | CORE_ADDR addr; |
d01949b6 | 9702 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9703 | char *p = rs->buf; |
bba74b36 | 9704 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9705 | |
4082afcc | 9706 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9707 | return -1; |
802188a7 | 9708 | |
28439a30 PA |
9709 | /* Make sure the remote is pointing at the right process, if |
9710 | necessary. */ | |
9711 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9712 | set_general_process (); | |
9713 | ||
96baa820 JM |
9714 | *(p++) = 'z'; |
9715 | *(p++) = '1'; | |
9716 | *(p++) = ','; | |
802188a7 | 9717 | |
8181d85f | 9718 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9719 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9720 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9721 | |
6d820c5c DJ |
9722 | putpkt (rs->buf); |
9723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9724 | |
6d820c5c | 9725 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9726 | { |
9727 | case PACKET_ERROR: | |
9728 | case PACKET_UNKNOWN: | |
9729 | return -1; | |
9730 | case PACKET_OK: | |
9731 | return 0; | |
9732 | } | |
8e65ff28 | 9733 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9734 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9735 | } |
96baa820 | 9736 | |
4a5e7a5b PA |
9737 | /* Verify memory using the "qCRC:" request. */ |
9738 | ||
9739 | static int | |
9740 | remote_verify_memory (struct target_ops *ops, | |
9741 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9742 | { | |
9743 | struct remote_state *rs = get_remote_state (); | |
9744 | unsigned long host_crc, target_crc; | |
9745 | char *tmp; | |
9746 | ||
936d2992 PA |
9747 | /* It doesn't make sense to use qCRC if the remote target is |
9748 | connected but not running. */ | |
9749 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9750 | { | |
9751 | enum packet_result result; | |
28439a30 | 9752 | |
936d2992 PA |
9753 | /* Make sure the remote is pointing at the right process. */ |
9754 | set_general_process (); | |
4a5e7a5b | 9755 | |
936d2992 PA |
9756 | /* FIXME: assumes lma can fit into long. */ |
9757 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9758 | (long) lma, (long) size); | |
9759 | putpkt (rs->buf); | |
4a5e7a5b | 9760 | |
936d2992 PA |
9761 | /* Be clever; compute the host_crc before waiting for target |
9762 | reply. */ | |
9763 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9764 | ||
9765 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9766 | |
936d2992 PA |
9767 | result = packet_ok (rs->buf, |
9768 | &remote_protocol_packets[PACKET_qCRC]); | |
9769 | if (result == PACKET_ERROR) | |
9770 | return -1; | |
9771 | else if (result == PACKET_OK) | |
9772 | { | |
9773 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9774 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9775 | |
936d2992 PA |
9776 | return (host_crc == target_crc); |
9777 | } | |
9778 | } | |
4a5e7a5b | 9779 | |
936d2992 | 9780 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9781 | } |
9782 | ||
c906108c SS |
9783 | /* compare-sections command |
9784 | ||
9785 | With no arguments, compares each loadable section in the exec bfd | |
9786 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9787 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9788 | |
c906108c | 9789 | static void |
fba45db2 | 9790 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9791 | { |
9792 | asection *s; | |
c906108c | 9793 | struct cleanup *old_chain; |
948f8e3d | 9794 | gdb_byte *sectdata; |
ce359b09 | 9795 | const char *sectname; |
c906108c SS |
9796 | bfd_size_type size; |
9797 | bfd_vma lma; | |
9798 | int matched = 0; | |
9799 | int mismatched = 0; | |
4a5e7a5b | 9800 | int res; |
95cf3b38 | 9801 | int read_only = 0; |
c906108c SS |
9802 | |
9803 | if (!exec_bfd) | |
8a3fe4f8 | 9804 | error (_("command cannot be used without an exec file")); |
c906108c | 9805 | |
28439a30 PA |
9806 | /* Make sure the remote is pointing at the right process. */ |
9807 | set_general_process (); | |
9808 | ||
95cf3b38 DT |
9809 | if (args != NULL && strcmp (args, "-r") == 0) |
9810 | { | |
9811 | read_only = 1; | |
9812 | args = NULL; | |
9813 | } | |
9814 | ||
c5aa993b | 9815 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9816 | { |
9817 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9818 | continue; /* Skip non-loadable section. */ |
c906108c | 9819 | |
95cf3b38 DT |
9820 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9821 | continue; /* Skip writeable sections */ | |
9822 | ||
2c500098 | 9823 | size = bfd_get_section_size (s); |
c906108c | 9824 | if (size == 0) |
0df8b418 | 9825 | continue; /* Skip zero-length section. */ |
c906108c | 9826 | |
ce359b09 | 9827 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9828 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9829 | continue; /* Not the section selected by user. */ |
c906108c | 9830 | |
0df8b418 | 9831 | matched = 1; /* Do this section. */ |
c906108c | 9832 | lma = s->lma; |
c906108c | 9833 | |
224c3ddb | 9834 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 9835 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9836 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9837 | |
4a5e7a5b PA |
9838 | res = target_verify_memory (sectdata, lma, size); |
9839 | ||
9840 | if (res == -1) | |
5af949e3 | 9841 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9842 | paddress (target_gdbarch (), lma), |
9843 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9844 | |
5af949e3 | 9845 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9846 | paddress (target_gdbarch (), lma), |
9847 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9848 | if (res) |
c906108c SS |
9849 | printf_filtered ("matched.\n"); |
9850 | else | |
c5aa993b JM |
9851 | { |
9852 | printf_filtered ("MIS-MATCHED!\n"); | |
9853 | mismatched++; | |
9854 | } | |
c906108c SS |
9855 | |
9856 | do_cleanups (old_chain); | |
9857 | } | |
9858 | if (mismatched > 0) | |
936d2992 | 9859 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9860 | the loaded file\n")); |
c906108c | 9861 | if (args && !matched) |
a3f17187 | 9862 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9863 | } |
9864 | ||
0e7f50da UW |
9865 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9866 | into remote target. The number of bytes written to the remote | |
9867 | target is returned, or -1 for error. */ | |
9868 | ||
9b409511 | 9869 | static enum target_xfer_status |
0e7f50da UW |
9870 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9871 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9872 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9873 | struct packet_config *packet) |
9874 | { | |
9875 | int i, buf_len; | |
9876 | ULONGEST n; | |
0e7f50da UW |
9877 | struct remote_state *rs = get_remote_state (); |
9878 | int max_size = get_memory_write_packet_size (); | |
9879 | ||
9880 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9881 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9882 | |
9883 | /* Insert header. */ | |
9884 | i = snprintf (rs->buf, max_size, | |
9885 | "qXfer:%s:write:%s:%s:", | |
9886 | object_name, annex ? annex : "", | |
9887 | phex_nz (offset, sizeof offset)); | |
9888 | max_size -= (i + 1); | |
9889 | ||
9890 | /* Escape as much data as fits into rs->buf. */ | |
9891 | buf_len = remote_escape_output | |
124e13d9 | 9892 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9893 | |
9894 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9895 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9896 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9897 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9898 | |
9899 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9900 | |
9901 | *xfered_len = n; | |
9902 | return TARGET_XFER_OK; | |
0e7f50da UW |
9903 | } |
9904 | ||
0876f84a DJ |
9905 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9906 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9907 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9908 | The number of bytes read may be less than LEN without indicating an | |
9909 | EOF. PACKET is checked and updated to indicate whether the remote | |
9910 | target supports this object. */ | |
9911 | ||
9b409511 | 9912 | static enum target_xfer_status |
0876f84a DJ |
9913 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9914 | const char *annex, | |
9915 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9916 | ULONGEST *xfered_len, |
0876f84a DJ |
9917 | struct packet_config *packet) |
9918 | { | |
0876f84a | 9919 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9920 | LONGEST i, n, packet_len; |
9921 | ||
9922 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9923 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9924 | |
9925 | /* Check whether we've cached an end-of-object packet that matches | |
9926 | this request. */ | |
8e88304f | 9927 | if (rs->finished_object) |
0876f84a | 9928 | { |
8e88304f TT |
9929 | if (strcmp (object_name, rs->finished_object) == 0 |
9930 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9931 | && offset == rs->finished_offset) | |
9b409511 YQ |
9932 | return TARGET_XFER_EOF; |
9933 | ||
0876f84a DJ |
9934 | |
9935 | /* Otherwise, we're now reading something different. Discard | |
9936 | the cache. */ | |
8e88304f TT |
9937 | xfree (rs->finished_object); |
9938 | xfree (rs->finished_annex); | |
9939 | rs->finished_object = NULL; | |
9940 | rs->finished_annex = NULL; | |
0876f84a DJ |
9941 | } |
9942 | ||
9943 | /* Request only enough to fit in a single packet. The actual data | |
9944 | may not, since we don't know how much of it will need to be escaped; | |
9945 | the target is free to respond with slightly less data. We subtract | |
9946 | five to account for the response type and the protocol frame. */ | |
9947 | n = min (get_remote_packet_size () - 5, len); | |
9948 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9949 | object_name, annex ? annex : "", | |
9950 | phex_nz (offset, sizeof offset), | |
9951 | phex_nz (n, sizeof n)); | |
9952 | i = putpkt (rs->buf); | |
9953 | if (i < 0) | |
2ed4b548 | 9954 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9955 | |
9956 | rs->buf[0] = '\0'; | |
9957 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9958 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9959 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9960 | |
9961 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9962 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9963 | ||
9964 | /* 'm' means there is (or at least might be) more data after this | |
9965 | batch. That does not make sense unless there's at least one byte | |
9966 | of data in this reply. */ | |
9967 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9968 | error (_("Remote qXfer reply contained no data.")); | |
9969 | ||
9970 | /* Got some data. */ | |
bc20a4af PA |
9971 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9972 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9973 | |
9974 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9975 | or possibly empty. If we have the final block of a non-empty |
9976 | object, record this fact to bypass a subsequent partial read. */ | |
9977 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9978 | { |
8e88304f TT |
9979 | rs->finished_object = xstrdup (object_name); |
9980 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9981 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9982 | } |
9983 | ||
9b409511 YQ |
9984 | if (i == 0) |
9985 | return TARGET_XFER_EOF; | |
9986 | else | |
9987 | { | |
9988 | *xfered_len = i; | |
9989 | return TARGET_XFER_OK; | |
9990 | } | |
0876f84a DJ |
9991 | } |
9992 | ||
9b409511 | 9993 | static enum target_xfer_status |
4b8a223f | 9994 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9995 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9996 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9997 | ULONGEST *xfered_len) | |
c906108c | 9998 | { |
82f73884 | 9999 | struct remote_state *rs; |
c906108c | 10000 | int i; |
6d820c5c | 10001 | char *p2; |
1e3ff5ad | 10002 | char query_type; |
124e13d9 | 10003 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10004 | |
e6e4e701 | 10005 | set_remote_traceframe (); |
82f73884 PA |
10006 | set_general_thread (inferior_ptid); |
10007 | ||
10008 | rs = get_remote_state (); | |
10009 | ||
b2182ed2 | 10010 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10011 | if (object == TARGET_OBJECT_MEMORY) |
10012 | { | |
2d717e4f DJ |
10013 | /* If the remote target is connected but not running, we should |
10014 | pass this request down to a lower stratum (e.g. the executable | |
10015 | file). */ | |
10016 | if (!target_has_execution) | |
9b409511 | 10017 | return TARGET_XFER_EOF; |
2d717e4f | 10018 | |
21e3b9b9 | 10019 | if (writebuf != NULL) |
124e13d9 SM |
10020 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10021 | xfered_len); | |
21e3b9b9 | 10022 | else |
124e13d9 SM |
10023 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10024 | xfered_len); | |
21e3b9b9 DJ |
10025 | } |
10026 | ||
0df8b418 | 10027 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10028 | if (object == TARGET_OBJECT_SPU) |
10029 | { | |
10030 | if (readbuf) | |
10031 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10032 | xfered_len, &remote_protocol_packets |
10033 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10034 | else |
10035 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10036 | xfered_len, &remote_protocol_packets |
10037 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10038 | } |
10039 | ||
4aa995e1 PA |
10040 | /* Handle extra signal info using qxfer packets. */ |
10041 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10042 | { | |
10043 | if (readbuf) | |
10044 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10045 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10046 | [PACKET_qXfer_siginfo_read]); |
10047 | else | |
3e43a32a | 10048 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10049 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10050 | &remote_protocol_packets |
10051 | [PACKET_qXfer_siginfo_write]); | |
10052 | } | |
10053 | ||
0fb4aa4b PA |
10054 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10055 | { | |
10056 | if (readbuf) | |
3e43a32a | 10057 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10058 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10059 | &remote_protocol_packets |
10060 | [PACKET_qXfer_statictrace_read]); | |
10061 | else | |
2ed4b548 | 10062 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10063 | } |
10064 | ||
a76d924d DJ |
10065 | /* Only handle flash writes. */ |
10066 | if (writebuf != NULL) | |
10067 | { | |
a76d924d DJ |
10068 | switch (object) |
10069 | { | |
10070 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10071 | return remote_flash_write (ops, offset, len, xfered_len, |
10072 | writebuf); | |
a76d924d DJ |
10073 | |
10074 | default: | |
2ed4b548 | 10075 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10076 | } |
10077 | } | |
4b8a223f | 10078 | |
1e3ff5ad AC |
10079 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10080 | objects!!! Instead specify new query packets. */ | |
10081 | switch (object) | |
c906108c | 10082 | { |
1e3ff5ad AC |
10083 | case TARGET_OBJECT_AVR: |
10084 | query_type = 'R'; | |
10085 | break; | |
802188a7 RM |
10086 | |
10087 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10088 | gdb_assert (annex == NULL); |
10089 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10090 | xfered_len, |
0876f84a | 10091 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10092 | |
23181151 DJ |
10093 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10094 | return remote_read_qxfer | |
9b409511 | 10095 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10096 | &remote_protocol_packets[PACKET_qXfer_features]); |
10097 | ||
cfa9d6d9 DJ |
10098 | case TARGET_OBJECT_LIBRARIES: |
10099 | return remote_read_qxfer | |
9b409511 | 10100 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10101 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10102 | ||
2268b414 JK |
10103 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10104 | return remote_read_qxfer | |
9b409511 | 10105 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10106 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10107 | ||
fd79ecee DJ |
10108 | case TARGET_OBJECT_MEMORY_MAP: |
10109 | gdb_assert (annex == NULL); | |
10110 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10111 | xfered_len, |
fd79ecee DJ |
10112 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10113 | ||
07e059b5 VP |
10114 | case TARGET_OBJECT_OSDATA: |
10115 | /* Should only get here if we're connected. */ | |
5d93a237 | 10116 | gdb_assert (rs->remote_desc); |
07e059b5 | 10117 | return remote_read_qxfer |
9b409511 | 10118 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10119 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10120 | ||
dc146f7c VP |
10121 | case TARGET_OBJECT_THREADS: |
10122 | gdb_assert (annex == NULL); | |
10123 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10124 | xfered_len, |
dc146f7c VP |
10125 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10126 | ||
b3b9301e PA |
10127 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10128 | gdb_assert (annex == NULL); | |
10129 | return remote_read_qxfer | |
9b409511 | 10130 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10131 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10132 | |
10133 | case TARGET_OBJECT_FDPIC: | |
10134 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10135 | xfered_len, |
78d85199 | 10136 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10137 | |
10138 | case TARGET_OBJECT_OPENVMS_UIB: | |
10139 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10140 | xfered_len, |
169081d0 TG |
10141 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10142 | ||
9accd112 MM |
10143 | case TARGET_OBJECT_BTRACE: |
10144 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10145 | xfered_len, |
9accd112 MM |
10146 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10147 | ||
f4abbc16 MM |
10148 | case TARGET_OBJECT_BTRACE_CONF: |
10149 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10150 | len, xfered_len, | |
10151 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10152 | ||
c78fa86a GB |
10153 | case TARGET_OBJECT_EXEC_FILE: |
10154 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10155 | len, xfered_len, | |
10156 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10157 | ||
1e3ff5ad | 10158 | default: |
2ed4b548 | 10159 | return TARGET_XFER_E_IO; |
c906108c SS |
10160 | } |
10161 | ||
0df8b418 | 10162 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10163 | large enough let the caller deal with it. */ |
ea9c271d | 10164 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10165 | return TARGET_XFER_E_IO; |
ea9c271d | 10166 | len = get_remote_packet_size (); |
1e3ff5ad | 10167 | |
23860348 | 10168 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10169 | if (!rs->remote_desc) |
8a3fe4f8 | 10170 | error (_("remote query is only available after target open")); |
c906108c | 10171 | |
1e3ff5ad | 10172 | gdb_assert (annex != NULL); |
4b8a223f | 10173 | gdb_assert (readbuf != NULL); |
c906108c | 10174 | |
6d820c5c | 10175 | p2 = rs->buf; |
c906108c SS |
10176 | *p2++ = 'q'; |
10177 | *p2++ = query_type; | |
10178 | ||
23860348 MS |
10179 | /* We used one buffer char for the remote protocol q command and |
10180 | another for the query type. As the remote protocol encapsulation | |
10181 | uses 4 chars plus one extra in case we are debugging | |
10182 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10183 | string. */ | |
c906108c | 10184 | i = 0; |
ea9c271d | 10185 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10186 | { |
1e3ff5ad AC |
10187 | /* Bad caller may have sent forbidden characters. */ |
10188 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10189 | *p2++ = annex[i]; | |
c906108c SS |
10190 | i++; |
10191 | } | |
1e3ff5ad AC |
10192 | *p2 = '\0'; |
10193 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10194 | |
6d820c5c | 10195 | i = putpkt (rs->buf); |
c5aa993b | 10196 | if (i < 0) |
2ed4b548 | 10197 | return TARGET_XFER_E_IO; |
c906108c | 10198 | |
6d820c5c DJ |
10199 | getpkt (&rs->buf, &rs->buf_size, 0); |
10200 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10201 | |
9b409511 YQ |
10202 | *xfered_len = strlen ((char *) readbuf); |
10203 | return TARGET_XFER_OK; | |
c906108c SS |
10204 | } |
10205 | ||
08388c79 DE |
10206 | static int |
10207 | remote_search_memory (struct target_ops* ops, | |
10208 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10209 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10210 | CORE_ADDR *found_addrp) | |
10211 | { | |
f5656ead | 10212 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10213 | struct remote_state *rs = get_remote_state (); |
10214 | int max_size = get_memory_write_packet_size (); | |
10215 | struct packet_config *packet = | |
10216 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10217 | /* Number of packet bytes used to encode the pattern; |
10218 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10219 | int escaped_pattern_len; |
0df8b418 | 10220 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10221 | int used_pattern_len; |
10222 | int i; | |
10223 | int found; | |
10224 | ULONGEST found_addr; | |
10225 | ||
10226 | /* Don't go to the target if we don't have to. | |
10227 | This is done before checking packet->support to avoid the possibility that | |
10228 | a success for this edge case means the facility works in general. */ | |
10229 | if (pattern_len > search_space_len) | |
10230 | return 0; | |
10231 | if (pattern_len == 0) | |
10232 | { | |
10233 | *found_addrp = start_addr; | |
10234 | return 1; | |
10235 | } | |
10236 | ||
10237 | /* If we already know the packet isn't supported, fall back to the simple | |
10238 | way of searching memory. */ | |
10239 | ||
4082afcc | 10240 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10241 | { |
10242 | /* Target doesn't provided special support, fall back and use the | |
10243 | standard support (copy memory and do the search here). */ | |
10244 | return simple_search_memory (ops, start_addr, search_space_len, | |
10245 | pattern, pattern_len, found_addrp); | |
10246 | } | |
10247 | ||
28439a30 PA |
10248 | /* Make sure the remote is pointing at the right process. */ |
10249 | set_general_process (); | |
10250 | ||
08388c79 DE |
10251 | /* Insert header. */ |
10252 | i = snprintf (rs->buf, max_size, | |
10253 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10254 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10255 | phex_nz (search_space_len, sizeof (search_space_len))); |
10256 | max_size -= (i + 1); | |
10257 | ||
10258 | /* Escape as much data as fits into rs->buf. */ | |
10259 | escaped_pattern_len = | |
124e13d9 | 10260 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10261 | &used_pattern_len, max_size); |
10262 | ||
10263 | /* Bail if the pattern is too large. */ | |
10264 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10265 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10266 | |
10267 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10268 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10269 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10270 | { | |
10271 | /* The request may not have worked because the command is not | |
10272 | supported. If so, fall back to the simple way. */ | |
10273 | if (packet->support == PACKET_DISABLE) | |
10274 | { | |
10275 | return simple_search_memory (ops, start_addr, search_space_len, | |
10276 | pattern, pattern_len, found_addrp); | |
10277 | } | |
10278 | return -1; | |
10279 | } | |
10280 | ||
10281 | if (rs->buf[0] == '0') | |
10282 | found = 0; | |
10283 | else if (rs->buf[0] == '1') | |
10284 | { | |
10285 | found = 1; | |
10286 | if (rs->buf[1] != ',') | |
10e0fa18 | 10287 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10288 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10289 | *found_addrp = found_addr; | |
10290 | } | |
10291 | else | |
10e0fa18 | 10292 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10293 | |
10294 | return found; | |
10295 | } | |
10296 | ||
96baa820 | 10297 | static void |
a30bf1f1 | 10298 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10299 | struct ui_file *outbuf) |
96baa820 | 10300 | { |
d01949b6 | 10301 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10302 | char *p = rs->buf; |
96baa820 | 10303 | |
5d93a237 | 10304 | if (!rs->remote_desc) |
8a3fe4f8 | 10305 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10306 | |
23860348 | 10307 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10308 | if (command == NULL) |
10309 | command = ""; | |
10310 | ||
23860348 | 10311 | /* The query prefix. */ |
2e9f7625 DJ |
10312 | strcpy (rs->buf, "qRcmd,"); |
10313 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10314 | |
3e43a32a MS |
10315 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10316 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10317 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10318 | |
23860348 | 10319 | /* Encode the actual command. */ |
a30bf1f1 | 10320 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10321 | |
6d820c5c | 10322 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10323 | error (_("Communication problem with target.")); |
96baa820 JM |
10324 | |
10325 | /* get/display the response */ | |
10326 | while (1) | |
10327 | { | |
2e9f7625 DJ |
10328 | char *buf; |
10329 | ||
00bf0b85 | 10330 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10331 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10332 | rs->buf[0] = '\0'; |
5b37825d PW |
10333 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10334 | { | |
10335 | /* Timeout. Continue to (try to) read responses. | |
10336 | This is better than stopping with an error, assuming the stub | |
10337 | is still executing the (long) monitor command. | |
10338 | If needed, the user can interrupt gdb using C-c, obtaining | |
10339 | an effect similar to stop on timeout. */ | |
10340 | continue; | |
10341 | } | |
2e9f7625 | 10342 | buf = rs->buf; |
96baa820 | 10343 | if (buf[0] == '\0') |
8a3fe4f8 | 10344 | error (_("Target does not support this command.")); |
96baa820 JM |
10345 | if (buf[0] == 'O' && buf[1] != 'K') |
10346 | { | |
23860348 | 10347 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10348 | continue; |
10349 | } | |
10350 | if (strcmp (buf, "OK") == 0) | |
10351 | break; | |
7be570e7 JM |
10352 | if (strlen (buf) == 3 && buf[0] == 'E' |
10353 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10354 | { | |
8a3fe4f8 | 10355 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10356 | } |
96baa820 JM |
10357 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10358 | { | |
10359 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10360 | |
96baa820 JM |
10361 | fputc_unfiltered (c, outbuf); |
10362 | } | |
10363 | break; | |
10364 | } | |
10365 | } | |
10366 | ||
fd79ecee DJ |
10367 | static VEC(mem_region_s) * |
10368 | remote_memory_map (struct target_ops *ops) | |
10369 | { | |
10370 | VEC(mem_region_s) *result = NULL; | |
10371 | char *text = target_read_stralloc (¤t_target, | |
10372 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10373 | ||
10374 | if (text) | |
10375 | { | |
10376 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10377 | |
fd79ecee DJ |
10378 | result = parse_memory_map (text); |
10379 | do_cleanups (back_to); | |
10380 | } | |
10381 | ||
10382 | return result; | |
10383 | } | |
10384 | ||
c906108c | 10385 | static void |
fba45db2 | 10386 | packet_command (char *args, int from_tty) |
c906108c | 10387 | { |
d01949b6 | 10388 | struct remote_state *rs = get_remote_state (); |
c906108c | 10389 | |
5d93a237 | 10390 | if (!rs->remote_desc) |
8a3fe4f8 | 10391 | error (_("command can only be used with remote target")); |
c906108c | 10392 | |
c5aa993b | 10393 | if (!args) |
8a3fe4f8 | 10394 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10395 | |
10396 | puts_filtered ("sending: "); | |
10397 | print_packet (args); | |
10398 | puts_filtered ("\n"); | |
10399 | putpkt (args); | |
10400 | ||
6d820c5c | 10401 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10402 | puts_filtered ("received: "); |
6d820c5c | 10403 | print_packet (rs->buf); |
c906108c SS |
10404 | puts_filtered ("\n"); |
10405 | } | |
10406 | ||
10407 | #if 0 | |
23860348 | 10408 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10409 | |
a14ed312 | 10410 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10411 | |
a14ed312 | 10412 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10413 | |
a14ed312 | 10414 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10415 | |
a14ed312 | 10416 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10417 | |
23860348 | 10418 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10419 | |
a14ed312 | 10420 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10421 | |
23860348 | 10422 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10423 | |
a14ed312 | 10424 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10425 | |
a14ed312 | 10426 | static void init_remote_threadtests (void); |
c906108c | 10427 | |
23860348 | 10428 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10429 | |
10430 | static void | |
fba45db2 | 10431 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10432 | { |
10433 | int sample_thread = SAMPLE_THREAD; | |
10434 | ||
a3f17187 | 10435 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10436 | set_general_thread (sample_thread); |
c906108c SS |
10437 | } |
10438 | ||
10439 | ||
10440 | static void | |
fba45db2 | 10441 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10442 | { |
10443 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10444 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10445 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10446 | |
79d7f229 | 10447 | if (remote_thread_alive (ptid)) |
c906108c SS |
10448 | printf_filtered ("PASS: Thread alive test\n"); |
10449 | else | |
10450 | printf_filtered ("FAIL: Thread alive test\n"); | |
10451 | } | |
10452 | ||
23860348 | 10453 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10454 | |
10455 | void | |
fba45db2 | 10456 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10457 | { |
10458 | char hexid[20]; | |
10459 | ||
23860348 | 10460 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10461 | hexid[16] = 0; |
10462 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10463 | } | |
10464 | ||
10465 | static void | |
fba45db2 | 10466 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10467 | { |
10468 | int startflag = 1; | |
10469 | threadref nextthread; | |
10470 | int done, result_count; | |
10471 | threadref threadlist[3]; | |
10472 | ||
10473 | printf_filtered ("Remote Threadlist test\n"); | |
10474 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10475 | &result_count, &threadlist[0])) | |
10476 | printf_filtered ("FAIL: threadlist test\n"); | |
10477 | else | |
10478 | { | |
10479 | threadref *scan = threadlist; | |
10480 | threadref *limit = scan + result_count; | |
10481 | ||
10482 | while (scan < limit) | |
10483 | output_threadid (" thread ", scan++); | |
10484 | } | |
10485 | } | |
10486 | ||
10487 | void | |
fba45db2 | 10488 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10489 | { |
10490 | output_threadid ("Threadid: ", &info->threadid); | |
10491 | printf_filtered ("Name: %s\n ", info->shortname); | |
10492 | printf_filtered ("State: %s\n", info->display); | |
10493 | printf_filtered ("other: %s\n\n", info->more_display); | |
10494 | } | |
10495 | ||
10496 | int | |
fba45db2 | 10497 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10498 | { |
10499 | int result; | |
10500 | int set; | |
10501 | struct gdb_ext_thread_info threadinfo; | |
10502 | ||
10503 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10504 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10505 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10506 | display_thread_info (&threadinfo); | |
10507 | return result; | |
10508 | } | |
10509 | ||
10510 | static void | |
fba45db2 | 10511 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10512 | { |
10513 | int athread = SAMPLE_THREAD; | |
10514 | threadref thread; | |
10515 | int set; | |
10516 | ||
10517 | int_to_threadref (&thread, athread); | |
10518 | printf_filtered ("Remote Threadinfo test\n"); | |
10519 | if (!get_and_display_threadinfo (&thread)) | |
10520 | printf_filtered ("FAIL cannot get thread info\n"); | |
10521 | } | |
10522 | ||
10523 | static int | |
fba45db2 | 10524 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10525 | { |
10526 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10527 | return get_and_display_threadinfo (ref); | |
10528 | } | |
10529 | ||
10530 | static void | |
fba45db2 | 10531 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10532 | { |
10533 | printf_filtered ("Remote Threadlist update test\n"); | |
10534 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10535 | } | |
10536 | ||
10537 | static void | |
10538 | init_remote_threadtests (void) | |
10539 | { | |
3e43a32a MS |
10540 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10541 | _("Fetch and print the remote list of " | |
10542 | "thread identifiers, one pkt only")); | |
c906108c | 10543 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10544 | _("Fetch and display info about one thread")); |
c906108c | 10545 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10546 | _("Test setting to a different thread")); |
c906108c | 10547 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10548 | _("Iterate through updating all remote thread info")); |
c906108c | 10549 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10550 | _(" Remote thread alive test ")); |
c906108c SS |
10551 | } |
10552 | ||
10553 | #endif /* 0 */ | |
10554 | ||
f3fb8c85 MS |
10555 | /* Convert a thread ID to a string. Returns the string in a static |
10556 | buffer. */ | |
10557 | ||
10558 | static char * | |
117de6a9 | 10559 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10560 | { |
79d7f229 | 10561 | static char buf[64]; |
82f73884 | 10562 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10563 | |
7cee1e54 PA |
10564 | if (ptid_equal (ptid, null_ptid)) |
10565 | return normal_pid_to_str (ptid); | |
10566 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10567 | { |
10568 | /* Printing an inferior target id. */ | |
10569 | ||
10570 | /* When multi-process extensions are off, there's no way in the | |
10571 | remote protocol to know the remote process id, if there's any | |
10572 | at all. There's one exception --- when we're connected with | |
10573 | target extended-remote, and we manually attached to a process | |
10574 | with "attach PID". We don't record anywhere a flag that | |
10575 | allows us to distinguish that case from the case of | |
10576 | connecting with extended-remote and the stub already being | |
10577 | attached to a process, and reporting yes to qAttached, hence | |
10578 | no smart special casing here. */ | |
10579 | if (!remote_multi_process_p (rs)) | |
10580 | { | |
10581 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10582 | return buf; | |
10583 | } | |
10584 | ||
10585 | return normal_pid_to_str (ptid); | |
82f73884 | 10586 | } |
ecd0ada5 | 10587 | else |
79d7f229 | 10588 | { |
ecd0ada5 PA |
10589 | if (ptid_equal (magic_null_ptid, ptid)) |
10590 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 10591 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
10592 | if (ptid_get_lwp (ptid) == 0) |
10593 | return normal_pid_to_str (ptid); | |
10594 | else | |
10595 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10596 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10597 | else |
10598 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10599 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10600 | return buf; |
10601 | } | |
f3fb8c85 MS |
10602 | } |
10603 | ||
38691318 KB |
10604 | /* Get the address of the thread local variable in OBJFILE which is |
10605 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10606 | ||
10607 | static CORE_ADDR | |
117de6a9 PA |
10608 | remote_get_thread_local_address (struct target_ops *ops, |
10609 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10610 | { |
4082afcc | 10611 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10612 | { |
10613 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10614 | char *p = rs->buf; |
82f73884 | 10615 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10616 | enum packet_result result; |
38691318 KB |
10617 | |
10618 | strcpy (p, "qGetTLSAddr:"); | |
10619 | p += strlen (p); | |
82f73884 | 10620 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10621 | *p++ = ','; |
10622 | p += hexnumstr (p, offset); | |
10623 | *p++ = ','; | |
10624 | p += hexnumstr (p, lm); | |
10625 | *p++ = '\0'; | |
10626 | ||
6d820c5c DJ |
10627 | putpkt (rs->buf); |
10628 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10629 | result = packet_ok (rs->buf, |
10630 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10631 | if (result == PACKET_OK) |
38691318 KB |
10632 | { |
10633 | ULONGEST result; | |
10634 | ||
6d820c5c | 10635 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10636 | return result; |
10637 | } | |
571dd617 | 10638 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10639 | throw_error (TLS_GENERIC_ERROR, |
10640 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10641 | else |
109c3e39 AC |
10642 | throw_error (TLS_GENERIC_ERROR, |
10643 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10644 | } |
10645 | else | |
109c3e39 AC |
10646 | throw_error (TLS_GENERIC_ERROR, |
10647 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10648 | /* Not reached. */ |
10649 | return 0; | |
10650 | } | |
10651 | ||
711e434b PM |
10652 | /* Provide thread local base, i.e. Thread Information Block address. |
10653 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10654 | ||
70221824 | 10655 | static int |
bd7ae0f5 | 10656 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10657 | { |
4082afcc | 10658 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10659 | { |
10660 | struct remote_state *rs = get_remote_state (); | |
10661 | char *p = rs->buf; | |
10662 | char *endp = rs->buf + get_remote_packet_size (); | |
10663 | enum packet_result result; | |
10664 | ||
10665 | strcpy (p, "qGetTIBAddr:"); | |
10666 | p += strlen (p); | |
10667 | p = write_ptid (p, endp, ptid); | |
10668 | *p++ = '\0'; | |
10669 | ||
10670 | putpkt (rs->buf); | |
10671 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10672 | result = packet_ok (rs->buf, | |
10673 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10674 | if (result == PACKET_OK) | |
10675 | { | |
10676 | ULONGEST result; | |
10677 | ||
10678 | unpack_varlen_hex (rs->buf, &result); | |
10679 | if (addr) | |
10680 | *addr = (CORE_ADDR) result; | |
10681 | return 1; | |
10682 | } | |
10683 | else if (result == PACKET_UNKNOWN) | |
10684 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10685 | else | |
10686 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10687 | } | |
10688 | else | |
10689 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10690 | /* Not reached. */ | |
10691 | return 0; | |
10692 | } | |
10693 | ||
29709017 DJ |
10694 | /* Support for inferring a target description based on the current |
10695 | architecture and the size of a 'g' packet. While the 'g' packet | |
10696 | can have any size (since optional registers can be left off the | |
10697 | end), some sizes are easily recognizable given knowledge of the | |
10698 | approximate architecture. */ | |
10699 | ||
10700 | struct remote_g_packet_guess | |
10701 | { | |
10702 | int bytes; | |
10703 | const struct target_desc *tdesc; | |
10704 | }; | |
10705 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10706 | DEF_VEC_O(remote_g_packet_guess_s); | |
10707 | ||
10708 | struct remote_g_packet_data | |
10709 | { | |
10710 | VEC(remote_g_packet_guess_s) *guesses; | |
10711 | }; | |
10712 | ||
10713 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10714 | ||
10715 | static void * | |
10716 | remote_g_packet_data_init (struct obstack *obstack) | |
10717 | { | |
10718 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10719 | } | |
10720 | ||
10721 | void | |
10722 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10723 | const struct target_desc *tdesc) | |
10724 | { | |
10725 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10726 | = ((struct remote_g_packet_data *) |
10727 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
10728 | struct remote_g_packet_guess new_guess, *guess; |
10729 | int ix; | |
10730 | ||
10731 | gdb_assert (tdesc != NULL); | |
10732 | ||
10733 | for (ix = 0; | |
10734 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10735 | ix++) | |
10736 | if (guess->bytes == bytes) | |
10737 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10738 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10739 | bytes); |
10740 | ||
10741 | new_guess.bytes = bytes; | |
10742 | new_guess.tdesc = tdesc; | |
10743 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10744 | } | |
10745 | ||
d962ef82 DJ |
10746 | /* Return 1 if remote_read_description would do anything on this target |
10747 | and architecture, 0 otherwise. */ | |
10748 | ||
10749 | static int | |
10750 | remote_read_description_p (struct target_ops *target) | |
10751 | { | |
10752 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10753 | = ((struct remote_g_packet_data *) |
10754 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
10755 | |
10756 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10757 | return 1; | |
10758 | ||
10759 | return 0; | |
10760 | } | |
10761 | ||
29709017 DJ |
10762 | static const struct target_desc * |
10763 | remote_read_description (struct target_ops *target) | |
10764 | { | |
10765 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10766 | = ((struct remote_g_packet_data *) |
10767 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 10768 | |
d962ef82 DJ |
10769 | /* Do not try this during initial connection, when we do not know |
10770 | whether there is a running but stopped thread. */ | |
10771 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10772 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10773 | |
29709017 DJ |
10774 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10775 | { | |
10776 | struct remote_g_packet_guess *guess; | |
10777 | int ix; | |
10778 | int bytes = send_g_packet (); | |
10779 | ||
10780 | for (ix = 0; | |
10781 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10782 | ix++) | |
10783 | if (guess->bytes == bytes) | |
10784 | return guess->tdesc; | |
10785 | ||
10786 | /* We discard the g packet. A minor optimization would be to | |
10787 | hold on to it, and fill the register cache once we have selected | |
10788 | an architecture, but it's too tricky to do safely. */ | |
10789 | } | |
10790 | ||
2117c711 | 10791 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10792 | } |
10793 | ||
a6b151f1 DJ |
10794 | /* Remote file transfer support. This is host-initiated I/O, not |
10795 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10796 | ||
10797 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10798 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10799 | decrease *LEFT. Otherwise raise an error. */ | |
10800 | ||
10801 | static void | |
10802 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10803 | { | |
10804 | int len = strlen (string); | |
10805 | ||
10806 | if (len > *left) | |
10807 | error (_("Packet too long for target.")); | |
10808 | ||
10809 | memcpy (*buffer, string, len); | |
10810 | *buffer += len; | |
10811 | *left -= len; | |
10812 | ||
10813 | /* NUL-terminate the buffer as a convenience, if there is | |
10814 | room. */ | |
10815 | if (*left) | |
10816 | **buffer = '\0'; | |
10817 | } | |
10818 | ||
10819 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10820 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10821 | decrease *LEFT. Otherwise raise an error. */ | |
10822 | ||
10823 | static void | |
10824 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10825 | int len) | |
10826 | { | |
10827 | if (2 * len > *left) | |
10828 | error (_("Packet too long for target.")); | |
10829 | ||
10830 | bin2hex (bytes, *buffer, len); | |
10831 | *buffer += 2 * len; | |
10832 | *left -= 2 * len; | |
10833 | ||
10834 | /* NUL-terminate the buffer as a convenience, if there is | |
10835 | room. */ | |
10836 | if (*left) | |
10837 | **buffer = '\0'; | |
10838 | } | |
10839 | ||
10840 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10841 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10842 | decrease *LEFT. Otherwise raise an error. */ | |
10843 | ||
10844 | static void | |
10845 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10846 | { | |
10847 | int len = hexnumlen (value); | |
10848 | ||
10849 | if (len > *left) | |
10850 | error (_("Packet too long for target.")); | |
10851 | ||
10852 | hexnumstr (*buffer, value); | |
10853 | *buffer += len; | |
10854 | *left -= len; | |
10855 | ||
10856 | /* NUL-terminate the buffer as a convenience, if there is | |
10857 | room. */ | |
10858 | if (*left) | |
10859 | **buffer = '\0'; | |
10860 | } | |
10861 | ||
10862 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10863 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10864 | was included, and *ATTACHMENT to point to the start of the annex | |
10865 | if any. The length of the packet isn't needed here; there may | |
10866 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10867 | ||
10868 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10869 | -1 is returned, the other variables may not be initialized. */ | |
10870 | ||
10871 | static int | |
10872 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10873 | int *remote_errno, char **attachment) | |
10874 | { | |
10875 | char *p, *p2; | |
10876 | ||
10877 | *remote_errno = 0; | |
10878 | *attachment = NULL; | |
10879 | ||
10880 | if (buffer[0] != 'F') | |
10881 | return -1; | |
10882 | ||
10883 | errno = 0; | |
10884 | *retcode = strtol (&buffer[1], &p, 16); | |
10885 | if (errno != 0 || p == &buffer[1]) | |
10886 | return -1; | |
10887 | ||
10888 | /* Check for ",errno". */ | |
10889 | if (*p == ',') | |
10890 | { | |
10891 | errno = 0; | |
10892 | *remote_errno = strtol (p + 1, &p2, 16); | |
10893 | if (errno != 0 || p + 1 == p2) | |
10894 | return -1; | |
10895 | p = p2; | |
10896 | } | |
10897 | ||
10898 | /* Check for ";attachment". If there is no attachment, the | |
10899 | packet should end here. */ | |
10900 | if (*p == ';') | |
10901 | { | |
10902 | *attachment = p + 1; | |
10903 | return 0; | |
10904 | } | |
10905 | else if (*p == '\0') | |
10906 | return 0; | |
10907 | else | |
10908 | return -1; | |
10909 | } | |
10910 | ||
10911 | /* Send a prepared I/O packet to the target and read its response. | |
10912 | The prepared packet is in the global RS->BUF before this function | |
10913 | is called, and the answer is there when we return. | |
10914 | ||
10915 | COMMAND_BYTES is the length of the request to send, which may include | |
10916 | binary data. WHICH_PACKET is the packet configuration to check | |
10917 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10918 | is set to the error number and -1 is returned. Otherwise the value | |
10919 | returned by the function is returned. | |
10920 | ||
10921 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10922 | attachment is expected; an error will be reported if there's a | |
10923 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10924 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10925 | attachment's length. */ | |
10926 | ||
10927 | static int | |
10928 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10929 | int *remote_errno, char **attachment, | |
10930 | int *attachment_len) | |
10931 | { | |
10932 | struct remote_state *rs = get_remote_state (); | |
10933 | int ret, bytes_read; | |
10934 | char *attachment_tmp; | |
10935 | ||
5d93a237 | 10936 | if (!rs->remote_desc |
4082afcc | 10937 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10938 | { |
10939 | *remote_errno = FILEIO_ENOSYS; | |
10940 | return -1; | |
10941 | } | |
10942 | ||
10943 | putpkt_binary (rs->buf, command_bytes); | |
10944 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10945 | ||
10946 | /* If it timed out, something is wrong. Don't try to parse the | |
10947 | buffer. */ | |
10948 | if (bytes_read < 0) | |
10949 | { | |
10950 | *remote_errno = FILEIO_EINVAL; | |
10951 | return -1; | |
10952 | } | |
10953 | ||
10954 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10955 | { | |
10956 | case PACKET_ERROR: | |
10957 | *remote_errno = FILEIO_EINVAL; | |
10958 | return -1; | |
10959 | case PACKET_UNKNOWN: | |
10960 | *remote_errno = FILEIO_ENOSYS; | |
10961 | return -1; | |
10962 | case PACKET_OK: | |
10963 | break; | |
10964 | } | |
10965 | ||
10966 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10967 | &attachment_tmp)) | |
10968 | { | |
10969 | *remote_errno = FILEIO_EINVAL; | |
10970 | return -1; | |
10971 | } | |
10972 | ||
10973 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10974 | if ((attachment_tmp == NULL && attachment != NULL) | |
10975 | || (attachment_tmp != NULL && attachment == NULL)) | |
10976 | { | |
10977 | *remote_errno = FILEIO_EINVAL; | |
10978 | return -1; | |
10979 | } | |
10980 | ||
10981 | /* If an attachment was found, it must point into the packet buffer; | |
10982 | work out how many bytes there were. */ | |
10983 | if (attachment_tmp != NULL) | |
10984 | { | |
10985 | *attachment = attachment_tmp; | |
10986 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10987 | } | |
10988 | ||
10989 | return ret; | |
10990 | } | |
10991 | ||
80152258 PA |
10992 | /* Invalidate the readahead cache. */ |
10993 | ||
10994 | static void | |
10995 | readahead_cache_invalidate (void) | |
10996 | { | |
10997 | struct remote_state *rs = get_remote_state (); | |
10998 | ||
10999 | rs->readahead_cache.fd = -1; | |
11000 | } | |
11001 | ||
11002 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
11003 | ||
11004 | static void | |
11005 | readahead_cache_invalidate_fd (int fd) | |
11006 | { | |
11007 | struct remote_state *rs = get_remote_state (); | |
11008 | ||
11009 | if (rs->readahead_cache.fd == fd) | |
11010 | rs->readahead_cache.fd = -1; | |
11011 | } | |
11012 | ||
15a201c8 GB |
11013 | /* Set the filesystem remote_hostio functions that take FILENAME |
11014 | arguments will use. Return 0 on success, or -1 if an error | |
11015 | occurs (and set *REMOTE_ERRNO). */ | |
11016 | ||
11017 | static int | |
11018 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11019 | { | |
11020 | struct remote_state *rs = get_remote_state (); | |
11021 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11022 | char *p = rs->buf; | |
11023 | int left = get_remote_packet_size () - 1; | |
11024 | char arg[9]; | |
11025 | int ret; | |
11026 | ||
11027 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11028 | return 0; | |
11029 | ||
11030 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11031 | return 0; | |
11032 | ||
11033 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11034 | ||
11035 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11036 | remote_buffer_add_string (&p, &left, arg); | |
11037 | ||
11038 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11039 | remote_errno, NULL, NULL); | |
11040 | ||
11041 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11042 | return 0; | |
11043 | ||
11044 | if (ret == 0) | |
11045 | rs->fs_pid = required_pid; | |
11046 | ||
11047 | return ret; | |
11048 | } | |
11049 | ||
12e2a5fd | 11050 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11051 | |
11052 | static int | |
cd897586 | 11053 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11054 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11055 | int flags, int mode, int warn_if_slow, |
11056 | int *remote_errno) | |
a6b151f1 DJ |
11057 | { |
11058 | struct remote_state *rs = get_remote_state (); | |
11059 | char *p = rs->buf; | |
11060 | int left = get_remote_packet_size () - 1; | |
11061 | ||
4313b8c0 GB |
11062 | if (warn_if_slow) |
11063 | { | |
11064 | static int warning_issued = 0; | |
11065 | ||
11066 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11067 | filename); | |
11068 | ||
11069 | if (!warning_issued) | |
11070 | { | |
11071 | warning (_("File transfers from remote targets can be slow." | |
11072 | " Use \"set sysroot\" to access files locally" | |
11073 | " instead.")); | |
11074 | warning_issued = 1; | |
11075 | } | |
11076 | } | |
11077 | ||
15a201c8 GB |
11078 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11079 | return -1; | |
11080 | ||
a6b151f1 DJ |
11081 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11082 | ||
11083 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11084 | strlen (filename)); | |
11085 | remote_buffer_add_string (&p, &left, ","); | |
11086 | ||
11087 | remote_buffer_add_int (&p, &left, flags); | |
11088 | remote_buffer_add_string (&p, &left, ","); | |
11089 | ||
11090 | remote_buffer_add_int (&p, &left, mode); | |
11091 | ||
11092 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11093 | remote_errno, NULL, NULL); | |
11094 | } | |
11095 | ||
12e2a5fd | 11096 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11097 | |
11098 | static int | |
0d866f62 TT |
11099 | remote_hostio_pwrite (struct target_ops *self, |
11100 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11101 | ULONGEST offset, int *remote_errno) |
11102 | { | |
11103 | struct remote_state *rs = get_remote_state (); | |
11104 | char *p = rs->buf; | |
11105 | int left = get_remote_packet_size (); | |
11106 | int out_len; | |
11107 | ||
80152258 PA |
11108 | readahead_cache_invalidate_fd (fd); |
11109 | ||
a6b151f1 DJ |
11110 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11111 | ||
11112 | remote_buffer_add_int (&p, &left, fd); | |
11113 | remote_buffer_add_string (&p, &left, ","); | |
11114 | ||
11115 | remote_buffer_add_int (&p, &left, offset); | |
11116 | remote_buffer_add_string (&p, &left, ","); | |
11117 | ||
124e13d9 | 11118 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11119 | get_remote_packet_size () - (p - rs->buf)); |
11120 | ||
11121 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11122 | remote_errno, NULL, NULL); | |
11123 | } | |
11124 | ||
80152258 PA |
11125 | /* Helper for the implementation of to_fileio_pread. Read the file |
11126 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11127 | |
11128 | static int | |
80152258 PA |
11129 | remote_hostio_pread_vFile (struct target_ops *self, |
11130 | int fd, gdb_byte *read_buf, int len, | |
11131 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11132 | { |
11133 | struct remote_state *rs = get_remote_state (); | |
11134 | char *p = rs->buf; | |
11135 | char *attachment; | |
11136 | int left = get_remote_packet_size (); | |
11137 | int ret, attachment_len; | |
11138 | int read_len; | |
11139 | ||
11140 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11141 | ||
11142 | remote_buffer_add_int (&p, &left, fd); | |
11143 | remote_buffer_add_string (&p, &left, ","); | |
11144 | ||
11145 | remote_buffer_add_int (&p, &left, len); | |
11146 | remote_buffer_add_string (&p, &left, ","); | |
11147 | ||
11148 | remote_buffer_add_int (&p, &left, offset); | |
11149 | ||
11150 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11151 | remote_errno, &attachment, | |
11152 | &attachment_len); | |
11153 | ||
11154 | if (ret < 0) | |
11155 | return ret; | |
11156 | ||
bc20a4af | 11157 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11158 | read_buf, len); |
11159 | if (read_len != ret) | |
11160 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11161 | ||
11162 | return ret; | |
11163 | } | |
11164 | ||
80152258 PA |
11165 | /* Serve pread from the readahead cache. Returns number of bytes |
11166 | read, or 0 if the request can't be served from the cache. */ | |
11167 | ||
11168 | static int | |
11169 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11170 | int fd, gdb_byte *read_buf, size_t len, | |
11171 | ULONGEST offset) | |
11172 | { | |
11173 | struct readahead_cache *cache = &rs->readahead_cache; | |
11174 | ||
11175 | if (cache->fd == fd | |
11176 | && cache->offset <= offset | |
11177 | && offset < cache->offset + cache->bufsize) | |
11178 | { | |
11179 | ULONGEST max = cache->offset + cache->bufsize; | |
11180 | ||
11181 | if (offset + len > max) | |
11182 | len = max - offset; | |
11183 | ||
11184 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11185 | return len; | |
11186 | } | |
11187 | ||
11188 | return 0; | |
11189 | } | |
11190 | ||
11191 | /* Implementation of to_fileio_pread. */ | |
11192 | ||
11193 | static int | |
11194 | remote_hostio_pread (struct target_ops *self, | |
11195 | int fd, gdb_byte *read_buf, int len, | |
11196 | ULONGEST offset, int *remote_errno) | |
11197 | { | |
11198 | int ret; | |
11199 | struct remote_state *rs = get_remote_state (); | |
11200 | struct readahead_cache *cache = &rs->readahead_cache; | |
11201 | ||
11202 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11203 | if (ret > 0) | |
11204 | { | |
11205 | cache->hit_count++; | |
11206 | ||
11207 | if (remote_debug) | |
11208 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11209 | pulongest (cache->hit_count)); | |
11210 | return ret; | |
11211 | } | |
11212 | ||
11213 | cache->miss_count++; | |
11214 | if (remote_debug) | |
11215 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11216 | pulongest (cache->miss_count)); | |
11217 | ||
11218 | cache->fd = fd; | |
11219 | cache->offset = offset; | |
11220 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11221 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11222 | |
11223 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11224 | cache->offset, remote_errno); | |
11225 | if (ret <= 0) | |
11226 | { | |
11227 | readahead_cache_invalidate_fd (fd); | |
11228 | return ret; | |
11229 | } | |
11230 | ||
11231 | cache->bufsize = ret; | |
11232 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11233 | } | |
11234 | ||
12e2a5fd | 11235 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11236 | |
11237 | static int | |
df39ea25 | 11238 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11239 | { |
11240 | struct remote_state *rs = get_remote_state (); | |
11241 | char *p = rs->buf; | |
11242 | int left = get_remote_packet_size () - 1; | |
11243 | ||
80152258 PA |
11244 | readahead_cache_invalidate_fd (fd); |
11245 | ||
a6b151f1 DJ |
11246 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11247 | ||
11248 | remote_buffer_add_int (&p, &left, fd); | |
11249 | ||
11250 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11251 | remote_errno, NULL, NULL); | |
11252 | } | |
11253 | ||
12e2a5fd | 11254 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11255 | |
11256 | static int | |
dbbca37d | 11257 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11258 | struct inferior *inf, const char *filename, |
11259 | int *remote_errno) | |
a6b151f1 DJ |
11260 | { |
11261 | struct remote_state *rs = get_remote_state (); | |
11262 | char *p = rs->buf; | |
11263 | int left = get_remote_packet_size () - 1; | |
11264 | ||
15a201c8 GB |
11265 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11266 | return -1; | |
11267 | ||
a6b151f1 DJ |
11268 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11269 | ||
11270 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11271 | strlen (filename)); | |
11272 | ||
11273 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11274 | remote_errno, NULL, NULL); | |
11275 | } | |
11276 | ||
12e2a5fd | 11277 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11278 | |
11279 | static char * | |
fab5aa7c | 11280 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11281 | struct inferior *inf, const char *filename, |
11282 | int *remote_errno) | |
b9e7b9c3 UW |
11283 | { |
11284 | struct remote_state *rs = get_remote_state (); | |
11285 | char *p = rs->buf; | |
11286 | char *attachment; | |
11287 | int left = get_remote_packet_size (); | |
11288 | int len, attachment_len; | |
11289 | int read_len; | |
11290 | char *ret; | |
11291 | ||
15a201c8 GB |
11292 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11293 | return NULL; | |
11294 | ||
b9e7b9c3 UW |
11295 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11296 | ||
11297 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11298 | strlen (filename)); | |
11299 | ||
11300 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11301 | remote_errno, &attachment, | |
11302 | &attachment_len); | |
11303 | ||
11304 | if (len < 0) | |
11305 | return NULL; | |
11306 | ||
224c3ddb | 11307 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11308 | |
bc20a4af PA |
11309 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11310 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11311 | if (read_len != len) |
11312 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11313 | ||
11314 | ret[len] = '\0'; | |
11315 | return ret; | |
11316 | } | |
11317 | ||
12e2a5fd | 11318 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11319 | |
11320 | static int | |
11321 | remote_hostio_fstat (struct target_ops *self, | |
11322 | int fd, struct stat *st, | |
11323 | int *remote_errno) | |
11324 | { | |
11325 | struct remote_state *rs = get_remote_state (); | |
11326 | char *p = rs->buf; | |
11327 | int left = get_remote_packet_size (); | |
11328 | int attachment_len, ret; | |
11329 | char *attachment; | |
11330 | struct fio_stat fst; | |
11331 | int read_len; | |
11332 | ||
464b0089 GB |
11333 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11334 | ||
11335 | remote_buffer_add_int (&p, &left, fd); | |
11336 | ||
11337 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11338 | remote_errno, &attachment, | |
11339 | &attachment_len); | |
11340 | if (ret < 0) | |
0a93529c | 11341 | { |
464b0089 GB |
11342 | if (*remote_errno != FILEIO_ENOSYS) |
11343 | return ret; | |
11344 | ||
0a93529c GB |
11345 | /* Strictly we should return -1, ENOSYS here, but when |
11346 | "set sysroot remote:" was implemented in August 2008 | |
11347 | BFD's need for a stat function was sidestepped with | |
11348 | this hack. This was not remedied until March 2015 | |
11349 | so we retain the previous behavior to avoid breaking | |
11350 | compatibility. | |
11351 | ||
11352 | Note that the memset is a March 2015 addition; older | |
11353 | GDBs set st_size *and nothing else* so the structure | |
11354 | would have garbage in all other fields. This might | |
11355 | break something but retaining the previous behavior | |
11356 | here would be just too wrong. */ | |
11357 | ||
11358 | memset (st, 0, sizeof (struct stat)); | |
11359 | st->st_size = INT_MAX; | |
11360 | return 0; | |
11361 | } | |
11362 | ||
0a93529c GB |
11363 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11364 | (gdb_byte *) &fst, sizeof (fst)); | |
11365 | ||
11366 | if (read_len != ret) | |
11367 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11368 | ||
11369 | if (read_len != sizeof (fst)) | |
11370 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11371 | read_len, (int) sizeof (fst)); | |
11372 | ||
11373 | remote_fileio_to_host_stat (&fst, st); | |
11374 | ||
11375 | return 0; | |
11376 | } | |
11377 | ||
12e2a5fd | 11378 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11379 | |
11380 | static int | |
11381 | remote_filesystem_is_local (struct target_ops *self) | |
11382 | { | |
11383 | /* Valgrind GDB presents itself as a remote target but works | |
11384 | on the local filesystem: it does not implement remote get | |
11385 | and users are not expected to set a sysroot. To handle | |
11386 | this case we treat the remote filesystem as local if the | |
11387 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11388 | does not support vFile:open. */ | |
a3be80c3 | 11389 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11390 | { |
11391 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11392 | ||
11393 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11394 | { | |
11395 | int fd, remote_errno; | |
11396 | ||
11397 | /* Try opening a file to probe support. The supplied | |
11398 | filename is irrelevant, we only care about whether | |
11399 | the stub recognizes the packet or not. */ | |
07c138c8 | 11400 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11401 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11402 | &remote_errno); |
11403 | ||
11404 | if (fd >= 0) | |
11405 | remote_hostio_close (self, fd, &remote_errno); | |
11406 | ||
11407 | ps = packet_support (PACKET_vFile_open); | |
11408 | } | |
11409 | ||
11410 | if (ps == PACKET_DISABLE) | |
11411 | { | |
11412 | static int warning_issued = 0; | |
11413 | ||
11414 | if (!warning_issued) | |
11415 | { | |
11416 | warning (_("remote target does not support file" | |
11417 | " transfer, attempting to access files" | |
11418 | " from local filesystem.")); | |
11419 | warning_issued = 1; | |
11420 | } | |
11421 | ||
11422 | return 1; | |
11423 | } | |
11424 | } | |
11425 | ||
11426 | return 0; | |
11427 | } | |
11428 | ||
a6b151f1 DJ |
11429 | static int |
11430 | remote_fileio_errno_to_host (int errnum) | |
11431 | { | |
11432 | switch (errnum) | |
11433 | { | |
11434 | case FILEIO_EPERM: | |
11435 | return EPERM; | |
11436 | case FILEIO_ENOENT: | |
11437 | return ENOENT; | |
11438 | case FILEIO_EINTR: | |
11439 | return EINTR; | |
11440 | case FILEIO_EIO: | |
11441 | return EIO; | |
11442 | case FILEIO_EBADF: | |
11443 | return EBADF; | |
11444 | case FILEIO_EACCES: | |
11445 | return EACCES; | |
11446 | case FILEIO_EFAULT: | |
11447 | return EFAULT; | |
11448 | case FILEIO_EBUSY: | |
11449 | return EBUSY; | |
11450 | case FILEIO_EEXIST: | |
11451 | return EEXIST; | |
11452 | case FILEIO_ENODEV: | |
11453 | return ENODEV; | |
11454 | case FILEIO_ENOTDIR: | |
11455 | return ENOTDIR; | |
11456 | case FILEIO_EISDIR: | |
11457 | return EISDIR; | |
11458 | case FILEIO_EINVAL: | |
11459 | return EINVAL; | |
11460 | case FILEIO_ENFILE: | |
11461 | return ENFILE; | |
11462 | case FILEIO_EMFILE: | |
11463 | return EMFILE; | |
11464 | case FILEIO_EFBIG: | |
11465 | return EFBIG; | |
11466 | case FILEIO_ENOSPC: | |
11467 | return ENOSPC; | |
11468 | case FILEIO_ESPIPE: | |
11469 | return ESPIPE; | |
11470 | case FILEIO_EROFS: | |
11471 | return EROFS; | |
11472 | case FILEIO_ENOSYS: | |
11473 | return ENOSYS; | |
11474 | case FILEIO_ENAMETOOLONG: | |
11475 | return ENAMETOOLONG; | |
11476 | } | |
11477 | return -1; | |
11478 | } | |
11479 | ||
11480 | static char * | |
11481 | remote_hostio_error (int errnum) | |
11482 | { | |
11483 | int host_error = remote_fileio_errno_to_host (errnum); | |
11484 | ||
11485 | if (host_error == -1) | |
11486 | error (_("Unknown remote I/O error %d"), errnum); | |
11487 | else | |
11488 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11489 | } | |
11490 | ||
a6b151f1 DJ |
11491 | static void |
11492 | remote_hostio_close_cleanup (void *opaque) | |
11493 | { | |
11494 | int fd = *(int *) opaque; | |
11495 | int remote_errno; | |
11496 | ||
df39ea25 | 11497 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11498 | } |
11499 | ||
11500 | void | |
11501 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11502 | { | |
11503 | struct cleanup *back_to, *close_cleanup; | |
11504 | int retcode, fd, remote_errno, bytes, io_size; | |
11505 | FILE *file; | |
11506 | gdb_byte *buffer; | |
11507 | int bytes_in_buffer; | |
11508 | int saw_eof; | |
11509 | ULONGEST offset; | |
5d93a237 | 11510 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11511 | |
5d93a237 | 11512 | if (!rs->remote_desc) |
a6b151f1 DJ |
11513 | error (_("command can only be used with remote target")); |
11514 | ||
614c279d | 11515 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11516 | if (file == NULL) |
11517 | perror_with_name (local_file); | |
7c8a8b04 | 11518 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11519 | |
07c138c8 | 11520 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11521 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11522 | | FILEIO_O_TRUNC), |
4313b8c0 | 11523 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11524 | if (fd == -1) |
11525 | remote_hostio_error (remote_errno); | |
11526 | ||
11527 | /* Send up to this many bytes at once. They won't all fit in the | |
11528 | remote packet limit, so we'll transfer slightly fewer. */ | |
11529 | io_size = get_remote_packet_size (); | |
224c3ddb | 11530 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11531 | make_cleanup (xfree, buffer); |
11532 | ||
11533 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11534 | ||
11535 | bytes_in_buffer = 0; | |
11536 | saw_eof = 0; | |
11537 | offset = 0; | |
11538 | while (bytes_in_buffer || !saw_eof) | |
11539 | { | |
11540 | if (!saw_eof) | |
11541 | { | |
3e43a32a MS |
11542 | bytes = fread (buffer + bytes_in_buffer, 1, |
11543 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11544 | file); |
11545 | if (bytes == 0) | |
11546 | { | |
11547 | if (ferror (file)) | |
11548 | error (_("Error reading %s."), local_file); | |
11549 | else | |
11550 | { | |
11551 | /* EOF. Unless there is something still in the | |
11552 | buffer from the last iteration, we are done. */ | |
11553 | saw_eof = 1; | |
11554 | if (bytes_in_buffer == 0) | |
11555 | break; | |
11556 | } | |
11557 | } | |
11558 | } | |
11559 | else | |
11560 | bytes = 0; | |
11561 | ||
11562 | bytes += bytes_in_buffer; | |
11563 | bytes_in_buffer = 0; | |
11564 | ||
0d866f62 TT |
11565 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11566 | fd, buffer, bytes, | |
3e43a32a | 11567 | offset, &remote_errno); |
a6b151f1 DJ |
11568 | |
11569 | if (retcode < 0) | |
11570 | remote_hostio_error (remote_errno); | |
11571 | else if (retcode == 0) | |
11572 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11573 | else if (retcode < bytes) | |
11574 | { | |
11575 | /* Short write. Save the rest of the read data for the next | |
11576 | write. */ | |
11577 | bytes_in_buffer = bytes - retcode; | |
11578 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11579 | } | |
11580 | ||
11581 | offset += retcode; | |
11582 | } | |
11583 | ||
11584 | discard_cleanups (close_cleanup); | |
df39ea25 | 11585 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11586 | remote_hostio_error (remote_errno); |
11587 | ||
11588 | if (from_tty) | |
11589 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11590 | do_cleanups (back_to); | |
11591 | } | |
11592 | ||
11593 | void | |
11594 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11595 | { | |
11596 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11597 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11598 | FILE *file; |
11599 | gdb_byte *buffer; | |
11600 | ULONGEST offset; | |
5d93a237 | 11601 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11602 | |
5d93a237 | 11603 | if (!rs->remote_desc) |
a6b151f1 DJ |
11604 | error (_("command can only be used with remote target")); |
11605 | ||
07c138c8 | 11606 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11607 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11608 | &remote_errno); | |
a6b151f1 DJ |
11609 | if (fd == -1) |
11610 | remote_hostio_error (remote_errno); | |
11611 | ||
614c279d | 11612 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11613 | if (file == NULL) |
11614 | perror_with_name (local_file); | |
7c8a8b04 | 11615 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11616 | |
11617 | /* Send up to this many bytes at once. They won't all fit in the | |
11618 | remote packet limit, so we'll transfer slightly fewer. */ | |
11619 | io_size = get_remote_packet_size (); | |
224c3ddb | 11620 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11621 | make_cleanup (xfree, buffer); |
11622 | ||
11623 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11624 | ||
11625 | offset = 0; | |
11626 | while (1) | |
11627 | { | |
a3be983c TT |
11628 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11629 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11630 | if (bytes == 0) |
11631 | /* Success, but no bytes, means end-of-file. */ | |
11632 | break; | |
11633 | if (bytes == -1) | |
11634 | remote_hostio_error (remote_errno); | |
11635 | ||
11636 | offset += bytes; | |
11637 | ||
11638 | bytes = fwrite (buffer, 1, bytes, file); | |
11639 | if (bytes == 0) | |
11640 | perror_with_name (local_file); | |
11641 | } | |
11642 | ||
11643 | discard_cleanups (close_cleanup); | |
df39ea25 | 11644 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11645 | remote_hostio_error (remote_errno); |
11646 | ||
11647 | if (from_tty) | |
11648 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11649 | do_cleanups (back_to); | |
11650 | } | |
11651 | ||
11652 | void | |
11653 | remote_file_delete (const char *remote_file, int from_tty) | |
11654 | { | |
11655 | int retcode, remote_errno; | |
5d93a237 | 11656 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11657 | |
5d93a237 | 11658 | if (!rs->remote_desc) |
a6b151f1 DJ |
11659 | error (_("command can only be used with remote target")); |
11660 | ||
dbbca37d | 11661 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11662 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11663 | if (retcode == -1) |
11664 | remote_hostio_error (remote_errno); | |
11665 | ||
11666 | if (from_tty) | |
11667 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11668 | } | |
11669 | ||
11670 | static void | |
11671 | remote_put_command (char *args, int from_tty) | |
11672 | { | |
11673 | struct cleanup *back_to; | |
11674 | char **argv; | |
11675 | ||
d1a41061 PP |
11676 | if (args == NULL) |
11677 | error_no_arg (_("file to put")); | |
11678 | ||
11679 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11680 | back_to = make_cleanup_freeargv (argv); |
11681 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11682 | error (_("Invalid parameters to remote put")); | |
11683 | ||
11684 | remote_file_put (argv[0], argv[1], from_tty); | |
11685 | ||
11686 | do_cleanups (back_to); | |
11687 | } | |
11688 | ||
11689 | static void | |
11690 | remote_get_command (char *args, int from_tty) | |
11691 | { | |
11692 | struct cleanup *back_to; | |
11693 | char **argv; | |
11694 | ||
d1a41061 PP |
11695 | if (args == NULL) |
11696 | error_no_arg (_("file to get")); | |
11697 | ||
11698 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11699 | back_to = make_cleanup_freeargv (argv); |
11700 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11701 | error (_("Invalid parameters to remote get")); | |
11702 | ||
11703 | remote_file_get (argv[0], argv[1], from_tty); | |
11704 | ||
11705 | do_cleanups (back_to); | |
11706 | } | |
11707 | ||
11708 | static void | |
11709 | remote_delete_command (char *args, int from_tty) | |
11710 | { | |
11711 | struct cleanup *back_to; | |
11712 | char **argv; | |
11713 | ||
d1a41061 PP |
11714 | if (args == NULL) |
11715 | error_no_arg (_("file to delete")); | |
11716 | ||
11717 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11718 | back_to = make_cleanup_freeargv (argv); |
11719 | if (argv[0] == NULL || argv[1] != NULL) | |
11720 | error (_("Invalid parameters to remote delete")); | |
11721 | ||
11722 | remote_file_delete (argv[0], from_tty); | |
11723 | ||
11724 | do_cleanups (back_to); | |
11725 | } | |
11726 | ||
11727 | static void | |
11728 | remote_command (char *args, int from_tty) | |
11729 | { | |
635c7e8a | 11730 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11731 | } |
11732 | ||
b2175913 | 11733 | static int |
19db3e69 | 11734 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11735 | { |
4082afcc PA |
11736 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11737 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11738 | return 1; |
11739 | else | |
11740 | return 0; | |
b2175913 MS |
11741 | } |
11742 | ||
74531fed | 11743 | static int |
2a9a2795 | 11744 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11745 | { |
11746 | return 1; | |
11747 | } | |
11748 | ||
03583c20 | 11749 | static int |
2bfc0540 | 11750 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11751 | { |
11752 | /* Only supported in extended mode. */ | |
11753 | return 0; | |
11754 | } | |
11755 | ||
8a305172 | 11756 | static int |
86ce2668 | 11757 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11758 | { |
11759 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11760 | |
8020350c | 11761 | return remote_multi_process_p (rs); |
8a305172 PA |
11762 | } |
11763 | ||
70221824 | 11764 | static int |
782b2b07 SS |
11765 | remote_supports_cond_tracepoints (void) |
11766 | { | |
4082afcc | 11767 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11768 | } |
11769 | ||
3788aec7 | 11770 | static int |
efcc2da7 | 11771 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11772 | { |
4082afcc | 11773 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11774 | } |
11775 | ||
70221824 | 11776 | static int |
7a697b8d SS |
11777 | remote_supports_fast_tracepoints (void) |
11778 | { | |
4082afcc | 11779 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11780 | } |
11781 | ||
0fb4aa4b PA |
11782 | static int |
11783 | remote_supports_static_tracepoints (void) | |
11784 | { | |
4082afcc | 11785 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11786 | } |
11787 | ||
1e4d1764 YQ |
11788 | static int |
11789 | remote_supports_install_in_trace (void) | |
11790 | { | |
4082afcc | 11791 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11792 | } |
11793 | ||
d248b706 | 11794 | static int |
7d178d6a | 11795 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11796 | { |
4082afcc PA |
11797 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11798 | == PACKET_ENABLE); | |
d248b706 KY |
11799 | } |
11800 | ||
3065dfb6 | 11801 | static int |
6de37a3a | 11802 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11803 | { |
4082afcc | 11804 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11805 | } |
11806 | ||
d3ce09f5 | 11807 | static int |
78eff0ec | 11808 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11809 | { |
4082afcc | 11810 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11811 | } |
11812 | ||
35b1e5cc | 11813 | static void |
ecae04e1 | 11814 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11815 | { |
11816 | putpkt ("QTinit"); | |
11817 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11818 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11819 | error (_("Target does not support this command.")); |
11820 | } | |
11821 | ||
11822 | static void free_actions_list (char **actions_list); | |
11823 | static void free_actions_list_cleanup_wrapper (void *); | |
11824 | static void | |
11825 | free_actions_list_cleanup_wrapper (void *al) | |
11826 | { | |
19ba03f4 | 11827 | free_actions_list ((char **) al); |
35b1e5cc SS |
11828 | } |
11829 | ||
11830 | static void | |
11831 | free_actions_list (char **actions_list) | |
11832 | { | |
11833 | int ndx; | |
11834 | ||
11835 | if (actions_list == 0) | |
11836 | return; | |
11837 | ||
11838 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11839 | xfree (actions_list[ndx]); | |
11840 | ||
11841 | xfree (actions_list); | |
11842 | } | |
11843 | ||
409873ef SS |
11844 | /* Recursive routine to walk through command list including loops, and |
11845 | download packets for each command. */ | |
11846 | ||
11847 | static void | |
11848 | remote_download_command_source (int num, ULONGEST addr, | |
11849 | struct command_line *cmds) | |
11850 | { | |
11851 | struct remote_state *rs = get_remote_state (); | |
11852 | struct command_line *cmd; | |
11853 | ||
11854 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11855 | { | |
0df8b418 | 11856 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11857 | strcpy (rs->buf, "QTDPsrc:"); |
11858 | encode_source_string (num, addr, "cmd", cmd->line, | |
11859 | rs->buf + strlen (rs->buf), | |
11860 | rs->buf_size - strlen (rs->buf)); | |
11861 | putpkt (rs->buf); | |
11862 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11863 | if (strcmp (target_buf, "OK")) | |
11864 | warning (_("Target does not support source download.")); | |
11865 | ||
11866 | if (cmd->control_type == while_control | |
11867 | || cmd->control_type == while_stepping_control) | |
11868 | { | |
11869 | remote_download_command_source (num, addr, *cmd->body_list); | |
11870 | ||
0df8b418 | 11871 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11872 | strcpy (rs->buf, "QTDPsrc:"); |
11873 | encode_source_string (num, addr, "cmd", "end", | |
11874 | rs->buf + strlen (rs->buf), | |
11875 | rs->buf_size - strlen (rs->buf)); | |
11876 | putpkt (rs->buf); | |
11877 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11878 | if (strcmp (target_buf, "OK")) | |
11879 | warning (_("Target does not support source download.")); | |
11880 | } | |
11881 | } | |
11882 | } | |
11883 | ||
35b1e5cc | 11884 | static void |
548f7808 | 11885 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11886 | { |
bba74b36 | 11887 | #define BUF_SIZE 2048 |
e8ba3115 | 11888 | |
35b1e5cc | 11889 | CORE_ADDR tpaddr; |
409873ef | 11890 | char addrbuf[40]; |
bba74b36 | 11891 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11892 | char **tdp_actions; |
11893 | char **stepping_actions; | |
11894 | int ndx; | |
11895 | struct cleanup *old_chain = NULL; | |
11896 | struct agent_expr *aexpr; | |
11897 | struct cleanup *aexpr_chain = NULL; | |
11898 | char *pkt; | |
e8ba3115 | 11899 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11900 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11901 | |
dc673c81 | 11902 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11903 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11904 | tdp_actions); | |
11905 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11906 | stepping_actions); | |
11907 | ||
11908 | tpaddr = loc->address; | |
11909 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11910 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11911 | addrbuf, /* address */ | |
11912 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11913 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11914 | /* Fast tracepoints are mostly handled by the target, but we can |
11915 | tell the target how big of an instruction block should be moved | |
11916 | around. */ | |
11917 | if (b->type == bp_fast_tracepoint) | |
11918 | { | |
11919 | /* Only test for support at download time; we may not know | |
11920 | target capabilities at definition time. */ | |
11921 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11922 | { |
6b940e6a PL |
11923 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11924 | NULL)) | |
bba74b36 | 11925 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11926 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11927 | else |
e8ba3115 YQ |
11928 | /* If it passed validation at definition but fails now, |
11929 | something is very wrong. */ | |
11930 | internal_error (__FILE__, __LINE__, | |
11931 | _("Fast tracepoint not " | |
11932 | "valid during download")); | |
35b1e5cc | 11933 | } |
e8ba3115 YQ |
11934 | else |
11935 | /* Fast tracepoints are functionally identical to regular | |
11936 | tracepoints, so don't take lack of support as a reason to | |
11937 | give up on the trace run. */ | |
11938 | warning (_("Target does not support fast tracepoints, " | |
11939 | "downloading %d as regular tracepoint"), b->number); | |
11940 | } | |
11941 | else if (b->type == bp_static_tracepoint) | |
11942 | { | |
11943 | /* Only test for support at download time; we may not know | |
11944 | target capabilities at definition time. */ | |
11945 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11946 | { |
e8ba3115 | 11947 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11948 | |
e8ba3115 YQ |
11949 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11950 | strcat (buf, ":S"); | |
0fb4aa4b | 11951 | else |
e8ba3115 | 11952 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11953 | } |
e8ba3115 YQ |
11954 | else |
11955 | /* Fast tracepoints are functionally identical to regular | |
11956 | tracepoints, so don't take lack of support as a reason | |
11957 | to give up on the trace run. */ | |
11958 | error (_("Target does not support static tracepoints")); | |
11959 | } | |
11960 | /* If the tracepoint has a conditional, make it into an agent | |
11961 | expression and append to the definition. */ | |
11962 | if (loc->cond) | |
11963 | { | |
11964 | /* Only test support at download time, we may not know target | |
11965 | capabilities at definition time. */ | |
11966 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11967 | { |
e8ba3115 YQ |
11968 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11969 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11970 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11971 | aexpr->len); | |
e8ba3115 YQ |
11972 | pkt = buf + strlen (buf); |
11973 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11974 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11975 | *pkt = '\0'; | |
11976 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11977 | } |
e8ba3115 YQ |
11978 | else |
11979 | warning (_("Target does not support conditional tracepoints, " | |
11980 | "ignoring tp %d cond"), b->number); | |
11981 | } | |
35b1e5cc | 11982 | |
d9b3f62e | 11983 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11984 | strcat (buf, "-"); |
11985 | putpkt (buf); | |
11986 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11987 | if (strcmp (target_buf, "OK")) | |
11988 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11989 | |
e8ba3115 YQ |
11990 | /* do_single_steps (t); */ |
11991 | if (tdp_actions) | |
11992 | { | |
11993 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11994 | { |
e8ba3115 | 11995 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11996 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11997 | b->number, addrbuf, /* address */ | |
11998 | tdp_actions[ndx], | |
11999 | ((tdp_actions[ndx + 1] || stepping_actions) | |
12000 | ? '-' : 0)); | |
e8ba3115 YQ |
12001 | putpkt (buf); |
12002 | remote_get_noisy_reply (&target_buf, | |
12003 | &target_buf_size); | |
12004 | if (strcmp (target_buf, "OK")) | |
12005 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12006 | } |
e8ba3115 YQ |
12007 | } |
12008 | if (stepping_actions) | |
12009 | { | |
12010 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12011 | { |
e8ba3115 | 12012 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12013 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12014 | b->number, addrbuf, /* address */ | |
12015 | ((ndx == 0) ? "S" : ""), | |
12016 | stepping_actions[ndx], | |
12017 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
12018 | putpkt (buf); |
12019 | remote_get_noisy_reply (&target_buf, | |
12020 | &target_buf_size); | |
12021 | if (strcmp (target_buf, "OK")) | |
12022 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12023 | } |
e8ba3115 | 12024 | } |
409873ef | 12025 | |
4082afcc | 12026 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12027 | { |
f00aae0f | 12028 | if (b->location != NULL) |
409873ef | 12029 | { |
e8ba3115 | 12030 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
12031 | encode_source_string (b->number, loc->address, "at", |
12032 | event_location_to_string (b->location), | |
12033 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
12034 | putpkt (buf); |
12035 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12036 | if (strcmp (target_buf, "OK")) | |
12037 | warning (_("Target does not support source download.")); | |
409873ef | 12038 | } |
e8ba3115 YQ |
12039 | if (b->cond_string) |
12040 | { | |
12041 | strcpy (buf, "QTDPsrc:"); | |
12042 | encode_source_string (b->number, loc->address, | |
12043 | "cond", b->cond_string, buf + strlen (buf), | |
12044 | 2048 - strlen (buf)); | |
12045 | putpkt (buf); | |
12046 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12047 | if (strcmp (target_buf, "OK")) | |
12048 | warning (_("Target does not support source download.")); | |
12049 | } | |
12050 | remote_download_command_source (b->number, loc->address, | |
12051 | breakpoint_commands (b)); | |
35b1e5cc | 12052 | } |
e8ba3115 YQ |
12053 | |
12054 | do_cleanups (old_chain); | |
35b1e5cc SS |
12055 | } |
12056 | ||
1e4d1764 | 12057 | static int |
a52a8357 | 12058 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12059 | { |
1e51243a PA |
12060 | struct remote_state *rs = get_remote_state (); |
12061 | struct trace_status *ts; | |
12062 | int status; | |
12063 | ||
12064 | /* Don't try to install tracepoints until we've relocated our | |
12065 | symbols, and fetched and merged the target's tracepoint list with | |
12066 | ours. */ | |
12067 | if (rs->starting_up) | |
12068 | return 0; | |
12069 | ||
12070 | ts = current_trace_status (); | |
8bd200f1 | 12071 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12072 | |
12073 | if (status == -1 || !ts->running_known || !ts->running) | |
12074 | return 0; | |
12075 | ||
12076 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12077 | installing tracepoint in trace, we have to return. */ | |
12078 | if (!remote_supports_install_in_trace ()) | |
12079 | return 0; | |
12080 | ||
12081 | return 1; | |
12082 | } | |
12083 | ||
12084 | ||
35b1e5cc | 12085 | static void |
559d2b81 TT |
12086 | remote_download_trace_state_variable (struct target_ops *self, |
12087 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12088 | { |
12089 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12090 | char *p; |
35b1e5cc | 12091 | |
bba74b36 YQ |
12092 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12093 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12094 | tsv->builtin); | |
00bf0b85 SS |
12095 | p = rs->buf + strlen (rs->buf); |
12096 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12097 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12098 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12099 | *p++ = '\0'; |
35b1e5cc SS |
12100 | putpkt (rs->buf); |
12101 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12102 | if (*target_buf == '\0') |
12103 | error (_("Target does not support this command.")); | |
12104 | if (strcmp (target_buf, "OK") != 0) | |
12105 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12106 | } |
12107 | ||
d248b706 | 12108 | static void |
46670d57 TT |
12109 | remote_enable_tracepoint (struct target_ops *self, |
12110 | struct bp_location *location) | |
d248b706 KY |
12111 | { |
12112 | struct remote_state *rs = get_remote_state (); | |
12113 | char addr_buf[40]; | |
12114 | ||
12115 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12116 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12117 | location->owner->number, addr_buf); | |
d248b706 KY |
12118 | putpkt (rs->buf); |
12119 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12120 | if (*rs->buf == '\0') | |
12121 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12122 | if (strcmp (rs->buf, "OK") != 0) | |
12123 | error (_("Error on target while enabling tracepoint.")); | |
12124 | } | |
12125 | ||
12126 | static void | |
780b049c TT |
12127 | remote_disable_tracepoint (struct target_ops *self, |
12128 | struct bp_location *location) | |
d248b706 KY |
12129 | { |
12130 | struct remote_state *rs = get_remote_state (); | |
12131 | char addr_buf[40]; | |
12132 | ||
12133 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12134 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12135 | location->owner->number, addr_buf); | |
d248b706 KY |
12136 | putpkt (rs->buf); |
12137 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12138 | if (*rs->buf == '\0') | |
12139 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12140 | if (strcmp (rs->buf, "OK") != 0) | |
12141 | error (_("Error on target while disabling tracepoint.")); | |
12142 | } | |
12143 | ||
35b1e5cc | 12144 | static void |
583f9a86 | 12145 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12146 | { |
12147 | asection *s; | |
81b9b86e | 12148 | bfd *abfd = NULL; |
35b1e5cc | 12149 | bfd_size_type size; |
608bcef2 | 12150 | bfd_vma vma; |
35b1e5cc | 12151 | int anysecs = 0; |
c2fa21f1 | 12152 | int offset = 0; |
35b1e5cc SS |
12153 | |
12154 | if (!exec_bfd) | |
12155 | return; /* No information to give. */ | |
12156 | ||
12157 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12158 | offset = strlen (target_buf); |
35b1e5cc SS |
12159 | for (s = exec_bfd->sections; s; s = s->next) |
12160 | { | |
12161 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12162 | int sec_length; |
35b1e5cc SS |
12163 | |
12164 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12165 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12166 | (s->flags & SEC_READONLY) == 0) |
12167 | continue; | |
12168 | ||
12169 | anysecs = 1; | |
81b9b86e | 12170 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12171 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12172 | sprintf_vma (tmp1, vma); |
12173 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12174 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12175 | if (offset + sec_length + 1 > target_buf_size) | |
12176 | { | |
4082afcc | 12177 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12178 | warning (_("\ |
c2fa21f1 HZ |
12179 | Too many sections for read-only sections definition packet.")); |
12180 | break; | |
12181 | } | |
bba74b36 YQ |
12182 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12183 | tmp1, tmp2); | |
c2fa21f1 | 12184 | offset += sec_length; |
35b1e5cc SS |
12185 | } |
12186 | if (anysecs) | |
12187 | { | |
12188 | putpkt (target_buf); | |
12189 | getpkt (&target_buf, &target_buf_size, 0); | |
12190 | } | |
12191 | } | |
12192 | ||
12193 | static void | |
e2d1aae3 | 12194 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12195 | { |
12196 | putpkt ("QTStart"); | |
12197 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12198 | if (*target_buf == '\0') |
12199 | error (_("Target does not support this command.")); | |
12200 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12201 | error (_("Bogus reply from target: %s"), target_buf); |
12202 | } | |
12203 | ||
12204 | static int | |
8bd200f1 | 12205 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12206 | { |
953b98d1 | 12207 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12208 | char *p = NULL; |
0df8b418 | 12209 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12210 | extern int trace_regblock_size; |
bd3eecc3 PA |
12211 | enum packet_result result; |
12212 | ||
4082afcc | 12213 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12214 | return -1; |
a744cf53 | 12215 | |
00bf0b85 SS |
12216 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12217 | ||
049dc89b JK |
12218 | putpkt ("qTStatus"); |
12219 | ||
492d29ea | 12220 | TRY |
67f41397 JK |
12221 | { |
12222 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12223 | } | |
492d29ea | 12224 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12225 | { |
598d3636 JK |
12226 | if (ex.error != TARGET_CLOSE_ERROR) |
12227 | { | |
12228 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12229 | return -1; | |
12230 | } | |
12231 | throw_exception (ex); | |
67f41397 | 12232 | } |
492d29ea | 12233 | END_CATCH |
00bf0b85 | 12234 | |
bd3eecc3 PA |
12235 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12236 | ||
00bf0b85 | 12237 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12238 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12239 | return -1; |
35b1e5cc | 12240 | |
00bf0b85 | 12241 | /* We're working with a live target. */ |
f5911ea1 | 12242 | ts->filename = NULL; |
00bf0b85 | 12243 | |
00bf0b85 | 12244 | if (*p++ != 'T') |
35b1e5cc SS |
12245 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12246 | ||
84cebc4a YQ |
12247 | /* Function 'parse_trace_status' sets default value of each field of |
12248 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12249 | parse_trace_status (p, ts); |
12250 | ||
12251 | return ts->running; | |
35b1e5cc SS |
12252 | } |
12253 | ||
70221824 | 12254 | static void |
db90e85c | 12255 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12256 | struct uploaded_tp *utp) |
12257 | { | |
12258 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12259 | char *reply; |
12260 | struct bp_location *loc; | |
12261 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12262 | size_t size = get_remote_packet_size (); |
f196051f SS |
12263 | |
12264 | if (tp) | |
12265 | { | |
12266 | tp->base.hit_count = 0; | |
12267 | tp->traceframe_usage = 0; | |
12268 | for (loc = tp->base.loc; loc; loc = loc->next) | |
12269 | { | |
12270 | /* If the tracepoint was never downloaded, don't go asking for | |
12271 | any status. */ | |
12272 | if (tp->number_on_target == 0) | |
12273 | continue; | |
bba74b36 YQ |
12274 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12275 | phex_nz (loc->address, 0)); | |
f196051f SS |
12276 | putpkt (rs->buf); |
12277 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12278 | if (reply && *reply) | |
12279 | { | |
12280 | if (*reply == 'V') | |
12281 | parse_tracepoint_status (reply + 1, bp, utp); | |
12282 | } | |
12283 | } | |
12284 | } | |
12285 | else if (utp) | |
12286 | { | |
12287 | utp->hit_count = 0; | |
12288 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12289 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12290 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12291 | putpkt (rs->buf); |
12292 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12293 | if (reply && *reply) | |
12294 | { | |
12295 | if (*reply == 'V') | |
12296 | parse_tracepoint_status (reply + 1, bp, utp); | |
12297 | } | |
12298 | } | |
12299 | } | |
12300 | ||
35b1e5cc | 12301 | static void |
74499f1b | 12302 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12303 | { |
12304 | putpkt ("QTStop"); | |
12305 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12306 | if (*target_buf == '\0') |
12307 | error (_("Target does not support this command.")); | |
12308 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12309 | error (_("Bogus reply from target: %s"), target_buf); |
12310 | } | |
12311 | ||
12312 | static int | |
bd4c6793 TT |
12313 | remote_trace_find (struct target_ops *self, |
12314 | enum trace_find_type type, int num, | |
cc5925ad | 12315 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12316 | int *tpp) |
12317 | { | |
12318 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12319 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12320 | char *p, *reply; |
12321 | int target_frameno = -1, target_tracept = -1; | |
12322 | ||
e6e4e701 PA |
12323 | /* Lookups other than by absolute frame number depend on the current |
12324 | trace selected, so make sure it is correct on the remote end | |
12325 | first. */ | |
12326 | if (type != tfind_number) | |
12327 | set_remote_traceframe (); | |
12328 | ||
35b1e5cc SS |
12329 | p = rs->buf; |
12330 | strcpy (p, "QTFrame:"); | |
12331 | p = strchr (p, '\0'); | |
12332 | switch (type) | |
12333 | { | |
12334 | case tfind_number: | |
bba74b36 | 12335 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12336 | break; |
12337 | case tfind_pc: | |
bba74b36 | 12338 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12339 | break; |
12340 | case tfind_tp: | |
bba74b36 | 12341 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12342 | break; |
12343 | case tfind_range: | |
bba74b36 YQ |
12344 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12345 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12346 | break; |
12347 | case tfind_outside: | |
bba74b36 YQ |
12348 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12349 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12350 | break; |
12351 | default: | |
9b20d036 | 12352 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12353 | } |
12354 | ||
12355 | putpkt (rs->buf); | |
2f65bcb7 | 12356 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12357 | if (*reply == '\0') |
12358 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12359 | |
12360 | while (reply && *reply) | |
12361 | switch (*reply) | |
12362 | { | |
12363 | case 'F': | |
f197e0f1 VP |
12364 | p = ++reply; |
12365 | target_frameno = (int) strtol (p, &reply, 16); | |
12366 | if (reply == p) | |
12367 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12368 | /* Don't update our remote traceframe number cache on failure |
12369 | to select a remote traceframe. */ | |
f197e0f1 VP |
12370 | if (target_frameno == -1) |
12371 | return -1; | |
35b1e5cc SS |
12372 | break; |
12373 | case 'T': | |
f197e0f1 VP |
12374 | p = ++reply; |
12375 | target_tracept = (int) strtol (p, &reply, 16); | |
12376 | if (reply == p) | |
12377 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12378 | break; |
12379 | case 'O': /* "OK"? */ | |
12380 | if (reply[1] == 'K' && reply[2] == '\0') | |
12381 | reply += 2; | |
12382 | else | |
12383 | error (_("Bogus reply from target: %s"), reply); | |
12384 | break; | |
12385 | default: | |
12386 | error (_("Bogus reply from target: %s"), reply); | |
12387 | } | |
12388 | if (tpp) | |
12389 | *tpp = target_tracept; | |
e6e4e701 | 12390 | |
262e1174 | 12391 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12392 | return target_frameno; |
12393 | } | |
12394 | ||
12395 | static int | |
4011015b TT |
12396 | remote_get_trace_state_variable_value (struct target_ops *self, |
12397 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12398 | { |
12399 | struct remote_state *rs = get_remote_state (); | |
12400 | char *reply; | |
12401 | ULONGEST uval; | |
12402 | ||
e6e4e701 PA |
12403 | set_remote_traceframe (); |
12404 | ||
bba74b36 | 12405 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12406 | putpkt (rs->buf); |
12407 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12408 | if (reply && *reply) | |
12409 | { | |
12410 | if (*reply == 'V') | |
12411 | { | |
12412 | unpack_varlen_hex (reply + 1, &uval); | |
12413 | *val = (LONGEST) uval; | |
12414 | return 1; | |
12415 | } | |
12416 | } | |
12417 | return 0; | |
12418 | } | |
12419 | ||
00bf0b85 | 12420 | static int |
dc3decaf | 12421 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12422 | { |
12423 | struct remote_state *rs = get_remote_state (); | |
12424 | char *p, *reply; | |
12425 | ||
12426 | p = rs->buf; | |
12427 | strcpy (p, "QTSave:"); | |
12428 | p += strlen (p); | |
12429 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12430 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12431 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12432 | *p++ = '\0'; |
12433 | putpkt (rs->buf); | |
ad91cd99 | 12434 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12435 | if (*reply == '\0') |
ad91cd99 PA |
12436 | error (_("Target does not support this command.")); |
12437 | if (strcmp (reply, "OK") != 0) | |
12438 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12439 | return 0; |
12440 | } | |
12441 | ||
12442 | /* This is basically a memory transfer, but needs to be its own packet | |
12443 | because we don't know how the target actually organizes its trace | |
12444 | memory, plus we want to be able to ask for as much as possible, but | |
12445 | not be unhappy if we don't get as much as we ask for. */ | |
12446 | ||
12447 | static LONGEST | |
88ee6f45 TT |
12448 | remote_get_raw_trace_data (struct target_ops *self, |
12449 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12450 | { |
12451 | struct remote_state *rs = get_remote_state (); | |
12452 | char *reply; | |
12453 | char *p; | |
12454 | int rslt; | |
12455 | ||
12456 | p = rs->buf; | |
12457 | strcpy (p, "qTBuffer:"); | |
12458 | p += strlen (p); | |
12459 | p += hexnumstr (p, offset); | |
12460 | *p++ = ','; | |
12461 | p += hexnumstr (p, len); | |
12462 | *p++ = '\0'; | |
12463 | ||
12464 | putpkt (rs->buf); | |
12465 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12466 | if (reply && *reply) | |
12467 | { | |
12468 | /* 'l' by itself means we're at the end of the buffer and | |
12469 | there is nothing more to get. */ | |
12470 | if (*reply == 'l') | |
12471 | return 0; | |
12472 | ||
12473 | /* Convert the reply into binary. Limit the number of bytes to | |
12474 | convert according to our passed-in buffer size, rather than | |
12475 | what was returned in the packet; if the target is | |
12476 | unexpectedly generous and gives us a bigger reply than we | |
12477 | asked for, we don't want to crash. */ | |
12478 | rslt = hex2bin (target_buf, buf, len); | |
12479 | return rslt; | |
12480 | } | |
12481 | ||
12482 | /* Something went wrong, flag as an error. */ | |
12483 | return -1; | |
12484 | } | |
12485 | ||
35b1e5cc | 12486 | static void |
37b25738 | 12487 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12488 | { |
12489 | struct remote_state *rs = get_remote_state (); | |
12490 | ||
4082afcc | 12491 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12492 | { |
ad91cd99 PA |
12493 | char *reply; |
12494 | ||
bba74b36 | 12495 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12496 | putpkt (rs->buf); |
ad91cd99 PA |
12497 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12498 | if (*reply == '\0') | |
33da3f1c | 12499 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12500 | if (strcmp (reply, "OK") != 0) |
12501 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12502 | } |
12503 | else if (val) | |
12504 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12505 | } |
12506 | ||
dc146f7c VP |
12507 | static int |
12508 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12509 | { | |
12510 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12511 | |
fe978cb0 PA |
12512 | if (info && info->priv) |
12513 | return info->priv->core; | |
dc146f7c VP |
12514 | return -1; |
12515 | } | |
12516 | ||
4daf5ac0 | 12517 | static void |
736d5b1f | 12518 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12519 | { |
12520 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12521 | char *reply; |
4daf5ac0 | 12522 | |
bba74b36 | 12523 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12524 | putpkt (rs->buf); |
ad91cd99 PA |
12525 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12526 | if (*reply == '\0') | |
4daf5ac0 | 12527 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12528 | if (strcmp (reply, "OK") != 0) |
12529 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12530 | } |
12531 | ||
b3b9301e | 12532 | static struct traceframe_info * |
a893e81f | 12533 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12534 | { |
12535 | char *text; | |
12536 | ||
12537 | text = target_read_stralloc (¤t_target, | |
12538 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12539 | if (text != NULL) | |
12540 | { | |
12541 | struct traceframe_info *info; | |
12542 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12543 | ||
12544 | info = parse_traceframe_info (text); | |
12545 | do_cleanups (back_to); | |
12546 | return info; | |
12547 | } | |
12548 | ||
12549 | return NULL; | |
12550 | } | |
12551 | ||
405f8e94 SS |
12552 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12553 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12554 | if the packet is not supported, and 0 if the minimum instruction | |
12555 | length is unknown. */ | |
12556 | ||
12557 | static int | |
0e67620a | 12558 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12559 | { |
12560 | struct remote_state *rs = get_remote_state (); | |
12561 | char *reply; | |
12562 | ||
e886a173 PA |
12563 | /* If we're not debugging a process yet, the IPA can't be |
12564 | loaded. */ | |
12565 | if (!target_has_execution) | |
12566 | return 0; | |
12567 | ||
12568 | /* Make sure the remote is pointing at the right process. */ | |
12569 | set_general_process (); | |
12570 | ||
bba74b36 | 12571 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12572 | putpkt (rs->buf); |
12573 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12574 | if (*reply == '\0') | |
12575 | return -1; | |
12576 | else | |
12577 | { | |
12578 | ULONGEST min_insn_len; | |
12579 | ||
12580 | unpack_varlen_hex (reply, &min_insn_len); | |
12581 | ||
12582 | return (int) min_insn_len; | |
12583 | } | |
12584 | } | |
12585 | ||
f6f899bf | 12586 | static void |
4da384be | 12587 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12588 | { |
4082afcc | 12589 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12590 | { |
12591 | struct remote_state *rs = get_remote_state (); | |
12592 | char *buf = rs->buf; | |
12593 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12594 | enum packet_result result; | |
12595 | ||
12596 | gdb_assert (val >= 0 || val == -1); | |
12597 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12598 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12599 | if (val < 0) | |
12600 | { | |
12601 | *buf++ = '-'; | |
12602 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12603 | } | |
12604 | else | |
12605 | buf += hexnumstr (buf, (ULONGEST) val); | |
12606 | ||
12607 | putpkt (rs->buf); | |
12608 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12609 | result = packet_ok (rs->buf, | |
12610 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12611 | ||
12612 | if (result != PACKET_OK) | |
12613 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12614 | } | |
12615 | } | |
12616 | ||
f196051f | 12617 | static int |
d9e68a2c TT |
12618 | remote_set_trace_notes (struct target_ops *self, |
12619 | const char *user, const char *notes, | |
ca623f82 | 12620 | const char *stop_notes) |
f196051f SS |
12621 | { |
12622 | struct remote_state *rs = get_remote_state (); | |
12623 | char *reply; | |
12624 | char *buf = rs->buf; | |
12625 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12626 | int nbytes; | |
12627 | ||
12628 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12629 | if (user) | |
12630 | { | |
12631 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12632 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12633 | buf += 2 * nbytes; |
12634 | *buf++ = ';'; | |
12635 | } | |
12636 | if (notes) | |
12637 | { | |
12638 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12639 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12640 | buf += 2 * nbytes; |
12641 | *buf++ = ';'; | |
12642 | } | |
12643 | if (stop_notes) | |
12644 | { | |
12645 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12646 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12647 | buf += 2 * nbytes; |
12648 | *buf++ = ';'; | |
12649 | } | |
12650 | /* Ensure the buffer is terminated. */ | |
12651 | *buf = '\0'; | |
12652 | ||
12653 | putpkt (rs->buf); | |
12654 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12655 | if (*reply == '\0') | |
12656 | return 0; | |
12657 | ||
12658 | if (strcmp (reply, "OK") != 0) | |
12659 | error (_("Bogus reply from target: %s"), reply); | |
12660 | ||
12661 | return 1; | |
12662 | } | |
12663 | ||
d1feda86 | 12664 | static int |
2c152180 | 12665 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12666 | { |
4082afcc | 12667 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12668 | { |
12669 | struct remote_state *rs = get_remote_state (); | |
12670 | ||
12671 | /* If the stub supports QAgent. */ | |
bba74b36 | 12672 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12673 | putpkt (rs->buf); |
12674 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12675 | ||
12676 | if (strcmp (rs->buf, "OK") == 0) | |
12677 | { | |
12678 | use_agent = use; | |
12679 | return 1; | |
12680 | } | |
12681 | } | |
12682 | ||
12683 | return 0; | |
12684 | } | |
12685 | ||
12686 | static int | |
fe38f897 | 12687 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12688 | { |
4082afcc | 12689 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12690 | } |
12691 | ||
9accd112 MM |
12692 | struct btrace_target_info |
12693 | { | |
12694 | /* The ptid of the traced thread. */ | |
12695 | ptid_t ptid; | |
f4abbc16 MM |
12696 | |
12697 | /* The obtained branch trace configuration. */ | |
12698 | struct btrace_config conf; | |
9accd112 MM |
12699 | }; |
12700 | ||
f4abbc16 MM |
12701 | /* Reset our idea of our target's btrace configuration. */ |
12702 | ||
12703 | static void | |
12704 | remote_btrace_reset (void) | |
12705 | { | |
12706 | struct remote_state *rs = get_remote_state (); | |
12707 | ||
12708 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12709 | } | |
12710 | ||
9accd112 MM |
12711 | /* Check whether the target supports branch tracing. */ |
12712 | ||
12713 | static int | |
043c3577 | 12714 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12715 | { |
4082afcc | 12716 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12717 | return 0; |
4082afcc | 12718 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12719 | return 0; |
12720 | ||
043c3577 MM |
12721 | switch (format) |
12722 | { | |
12723 | case BTRACE_FORMAT_NONE: | |
12724 | return 0; | |
12725 | ||
12726 | case BTRACE_FORMAT_BTS: | |
12727 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12728 | |
12729 | case BTRACE_FORMAT_PT: | |
12730 | /* The trace is decoded on the host. Even if our target supports it, | |
12731 | we still need to have libipt to decode the trace. */ | |
12732 | #if defined (HAVE_LIBIPT) | |
12733 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12734 | #else /* !defined (HAVE_LIBIPT) */ | |
12735 | return 0; | |
12736 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12737 | } |
12738 | ||
12739 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12740 | } |
12741 | ||
f4abbc16 MM |
12742 | /* Synchronize the configuration with the target. */ |
12743 | ||
12744 | static void | |
12745 | btrace_sync_conf (const struct btrace_config *conf) | |
12746 | { | |
d33501a5 MM |
12747 | struct packet_config *packet; |
12748 | struct remote_state *rs; | |
12749 | char *buf, *pos, *endbuf; | |
12750 | ||
12751 | rs = get_remote_state (); | |
12752 | buf = rs->buf; | |
12753 | endbuf = buf + get_remote_packet_size (); | |
12754 | ||
12755 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12756 | if (packet_config_support (packet) == PACKET_ENABLE | |
12757 | && conf->bts.size != rs->btrace_config.bts.size) | |
12758 | { | |
12759 | pos = buf; | |
12760 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12761 | conf->bts.size); | |
12762 | ||
12763 | putpkt (buf); | |
12764 | getpkt (&buf, &rs->buf_size, 0); | |
12765 | ||
12766 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12767 | { | |
12768 | if (buf[0] == 'E' && buf[1] == '.') | |
12769 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12770 | else | |
12771 | error (_("Failed to configure the BTS buffer size.")); | |
12772 | } | |
12773 | ||
12774 | rs->btrace_config.bts.size = conf->bts.size; | |
12775 | } | |
b20a6524 MM |
12776 | |
12777 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12778 | if (packet_config_support (packet) == PACKET_ENABLE | |
12779 | && conf->pt.size != rs->btrace_config.pt.size) | |
12780 | { | |
12781 | pos = buf; | |
12782 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12783 | conf->pt.size); | |
12784 | ||
12785 | putpkt (buf); | |
12786 | getpkt (&buf, &rs->buf_size, 0); | |
12787 | ||
12788 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12789 | { | |
12790 | if (buf[0] == 'E' && buf[1] == '.') | |
12791 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12792 | else | |
12793 | error (_("Failed to configure the trace buffer size.")); | |
12794 | } | |
12795 | ||
12796 | rs->btrace_config.pt.size = conf->pt.size; | |
12797 | } | |
f4abbc16 MM |
12798 | } |
12799 | ||
12800 | /* Read the current thread's btrace configuration from the target and | |
12801 | store it into CONF. */ | |
12802 | ||
12803 | static void | |
12804 | btrace_read_config (struct btrace_config *conf) | |
12805 | { | |
12806 | char *xml; | |
12807 | ||
12808 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12809 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12810 | if (xml != NULL) |
12811 | { | |
12812 | struct cleanup *cleanup; | |
12813 | ||
12814 | cleanup = make_cleanup (xfree, xml); | |
12815 | parse_xml_btrace_conf (conf, xml); | |
12816 | do_cleanups (cleanup); | |
12817 | } | |
12818 | } | |
12819 | ||
9accd112 MM |
12820 | /* Enable branch tracing. */ |
12821 | ||
12822 | static struct btrace_target_info * | |
f4abbc16 MM |
12823 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12824 | const struct btrace_config *conf) | |
9accd112 MM |
12825 | { |
12826 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12827 | struct packet_config *packet = NULL; |
9accd112 MM |
12828 | struct remote_state *rs = get_remote_state (); |
12829 | char *buf = rs->buf; | |
12830 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12831 | ||
b20a6524 MM |
12832 | switch (conf->format) |
12833 | { | |
12834 | case BTRACE_FORMAT_BTS: | |
12835 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12836 | break; | |
12837 | ||
12838 | case BTRACE_FORMAT_PT: | |
12839 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12840 | break; | |
12841 | } | |
12842 | ||
12843 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12844 | error (_("Target does not support branch tracing.")); |
12845 | ||
f4abbc16 MM |
12846 | btrace_sync_conf (conf); |
12847 | ||
9accd112 MM |
12848 | set_general_thread (ptid); |
12849 | ||
12850 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12851 | putpkt (rs->buf); | |
12852 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12853 | ||
12854 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12855 | { | |
12856 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12857 | error (_("Could not enable branch tracing for %s: %s"), | |
12858 | target_pid_to_str (ptid), rs->buf + 2); | |
12859 | else | |
12860 | error (_("Could not enable branch tracing for %s."), | |
12861 | target_pid_to_str (ptid)); | |
12862 | } | |
12863 | ||
8d749320 | 12864 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12865 | tinfo->ptid = ptid; |
12866 | ||
f4abbc16 MM |
12867 | /* If we fail to read the configuration, we lose some information, but the |
12868 | tracing itself is not impacted. */ | |
492d29ea PA |
12869 | TRY |
12870 | { | |
12871 | btrace_read_config (&tinfo->conf); | |
12872 | } | |
12873 | CATCH (err, RETURN_MASK_ERROR) | |
12874 | { | |
12875 | if (err.message != NULL) | |
12876 | warning ("%s", err.message); | |
12877 | } | |
12878 | END_CATCH | |
f4abbc16 | 12879 | |
9accd112 MM |
12880 | return tinfo; |
12881 | } | |
12882 | ||
12883 | /* Disable branch tracing. */ | |
12884 | ||
12885 | static void | |
25e95349 TT |
12886 | remote_disable_btrace (struct target_ops *self, |
12887 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12888 | { |
12889 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12890 | struct remote_state *rs = get_remote_state (); | |
12891 | char *buf = rs->buf; | |
12892 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12893 | ||
4082afcc | 12894 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12895 | error (_("Target does not support branch tracing.")); |
12896 | ||
12897 | set_general_thread (tinfo->ptid); | |
12898 | ||
12899 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12900 | putpkt (rs->buf); | |
12901 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12902 | ||
12903 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12904 | { | |
12905 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12906 | error (_("Could not disable branch tracing for %s: %s"), | |
12907 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12908 | else | |
12909 | error (_("Could not disable branch tracing for %s."), | |
12910 | target_pid_to_str (tinfo->ptid)); | |
12911 | } | |
12912 | ||
12913 | xfree (tinfo); | |
12914 | } | |
12915 | ||
12916 | /* Teardown branch tracing. */ | |
12917 | ||
12918 | static void | |
1777056d TT |
12919 | remote_teardown_btrace (struct target_ops *self, |
12920 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12921 | { |
12922 | /* We must not talk to the target during teardown. */ | |
12923 | xfree (tinfo); | |
12924 | } | |
12925 | ||
12926 | /* Read the branch trace. */ | |
12927 | ||
969c39fb | 12928 | static enum btrace_error |
39c49f83 | 12929 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12930 | struct btrace_data *btrace, |
969c39fb | 12931 | struct btrace_target_info *tinfo, |
9accd112 MM |
12932 | enum btrace_read_type type) |
12933 | { | |
12934 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
969c39fb | 12935 | struct cleanup *cleanup; |
9accd112 MM |
12936 | const char *annex; |
12937 | char *xml; | |
12938 | ||
4082afcc | 12939 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12940 | error (_("Target does not support branch tracing.")); |
12941 | ||
12942 | #if !defined(HAVE_LIBEXPAT) | |
12943 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12944 | #endif | |
12945 | ||
12946 | switch (type) | |
12947 | { | |
864089d2 | 12948 | case BTRACE_READ_ALL: |
9accd112 MM |
12949 | annex = "all"; |
12950 | break; | |
864089d2 | 12951 | case BTRACE_READ_NEW: |
9accd112 MM |
12952 | annex = "new"; |
12953 | break; | |
969c39fb MM |
12954 | case BTRACE_READ_DELTA: |
12955 | annex = "delta"; | |
12956 | break; | |
9accd112 MM |
12957 | default: |
12958 | internal_error (__FILE__, __LINE__, | |
12959 | _("Bad branch tracing read type: %u."), | |
12960 | (unsigned int) type); | |
12961 | } | |
12962 | ||
12963 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12964 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12965 | if (xml == NULL) |
12966 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12967 | |
969c39fb | 12968 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12969 | parse_xml_btrace (btrace, xml); |
969c39fb | 12970 | do_cleanups (cleanup); |
9accd112 | 12971 | |
969c39fb | 12972 | return BTRACE_ERR_NONE; |
9accd112 MM |
12973 | } |
12974 | ||
f4abbc16 MM |
12975 | static const struct btrace_config * |
12976 | remote_btrace_conf (struct target_ops *self, | |
12977 | const struct btrace_target_info *tinfo) | |
12978 | { | |
12979 | return &tinfo->conf; | |
12980 | } | |
12981 | ||
ced63ec0 | 12982 | static int |
5436ff03 | 12983 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12984 | { |
4082afcc PA |
12985 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12986 | == PACKET_ENABLE); | |
ced63ec0 GB |
12987 | } |
12988 | ||
9dd130a0 TT |
12989 | /* Implementation of to_load. */ |
12990 | ||
12991 | static void | |
9cbe5fff | 12992 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12993 | { |
12994 | generic_load (name, from_tty); | |
12995 | } | |
12996 | ||
c78fa86a GB |
12997 | /* Accepts an integer PID; returns a string representing a file that |
12998 | can be opened on the remote side to get the symbols for the child | |
12999 | process. Returns NULL if the operation is not supported. */ | |
13000 | ||
13001 | static char * | |
13002 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
13003 | { | |
13004 | static char *filename = NULL; | |
835205d0 GB |
13005 | struct inferior *inf; |
13006 | char *annex = NULL; | |
c78fa86a GB |
13007 | |
13008 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13009 | return NULL; | |
13010 | ||
13011 | if (filename != NULL) | |
13012 | xfree (filename); | |
13013 | ||
835205d0 GB |
13014 | inf = find_inferior_pid (pid); |
13015 | if (inf == NULL) | |
13016 | internal_error (__FILE__, __LINE__, | |
13017 | _("not currently attached to process %d"), pid); | |
13018 | ||
13019 | if (!inf->fake_pid_p) | |
13020 | { | |
13021 | const int annex_size = 9; | |
13022 | ||
224c3ddb | 13023 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13024 | xsnprintf (annex, annex_size, "%x", pid); |
13025 | } | |
13026 | ||
c78fa86a GB |
13027 | filename = target_read_stralloc (¤t_target, |
13028 | TARGET_OBJECT_EXEC_FILE, annex); | |
13029 | ||
13030 | return filename; | |
13031 | } | |
13032 | ||
750ce8d1 YQ |
13033 | /* Implement the to_can_do_single_step target_ops method. */ |
13034 | ||
13035 | static int | |
13036 | remote_can_do_single_step (struct target_ops *ops) | |
13037 | { | |
13038 | /* We can only tell whether target supports single step or not by | |
13039 | supported s and S vCont actions if the stub supports vContSupported | |
13040 | feature. If the stub doesn't support vContSupported feature, | |
13041 | we have conservatively to think target doesn't supports single | |
13042 | step. */ | |
13043 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13044 | { | |
13045 | struct remote_state *rs = get_remote_state (); | |
13046 | ||
13047 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13048 | remote_vcont_probe (rs); | |
13049 | ||
13050 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13051 | } | |
13052 | else | |
13053 | return 0; | |
13054 | } | |
13055 | ||
c906108c | 13056 | static void |
fba45db2 | 13057 | init_remote_ops (void) |
c906108c | 13058 | { |
c5aa993b | 13059 | remote_ops.to_shortname = "remote"; |
c906108c | 13060 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13061 | remote_ops.to_doc = |
c906108c | 13062 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13063 | Specify the serial device it is connected to\n\ |
13064 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13065 | remote_ops.to_open = remote_open; |
13066 | remote_ops.to_close = remote_close; | |
c906108c | 13067 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13068 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13069 | remote_ops.to_resume = remote_resume; |
c906108c SS |
13070 | remote_ops.to_wait = remote_wait; |
13071 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13072 | remote_ops.to_store_registers = remote_store_registers; | |
13073 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13074 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13075 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13076 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13077 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13078 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13079 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13080 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13081 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13082 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13083 | remote_ops.to_watchpoint_addr_within_range = |
13084 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13085 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13086 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13087 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13088 | remote_ops.to_region_ok_for_hw_watchpoint |
13089 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13090 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13091 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13092 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13093 | remote_ops.to_load = remote_load; |
c906108c | 13094 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13095 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13096 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13097 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13098 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13099 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13100 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13101 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13102 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13103 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13104 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13105 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 13106 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 13107 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 13108 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13109 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13110 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13111 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13112 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13113 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13114 | remote_ops.to_has_memory = default_child_has_memory; | |
13115 | remote_ops.to_has_stack = default_child_has_stack; | |
13116 | remote_ops.to_has_registers = default_child_has_registers; | |
13117 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13118 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13119 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13120 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13121 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13122 | remote_ops.to_flash_erase = remote_flash_erase; |
13123 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13124 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13125 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13126 | remote_ops.to_can_async_p = remote_can_async_p; |
13127 | remote_ops.to_is_async_p = remote_is_async_p; | |
13128 | remote_ops.to_async = remote_async; | |
65706a29 | 13129 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13130 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13131 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13132 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13133 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13134 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13135 | remote_ops.to_supports_disable_randomization |
13136 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13137 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13138 | remote_ops.to_fileio_open = remote_hostio_open; |
13139 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13140 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13141 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13142 | remote_ops.to_fileio_close = remote_hostio_close; |
13143 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13144 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13145 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13146 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13147 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13148 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13149 | remote_ops.to_trace_init = remote_trace_init; |
13150 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13151 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13152 | remote_ops.to_download_trace_state_variable |
13153 | = remote_download_trace_state_variable; | |
d248b706 KY |
13154 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13155 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13156 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13157 | remote_ops.to_trace_start = remote_trace_start; | |
13158 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13159 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13160 | remote_ops.to_trace_stop = remote_trace_stop; |
13161 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13162 | remote_ops.to_get_trace_state_variable_value |
13163 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13164 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13165 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13166 | remote_ops.to_upload_trace_state_variables |
13167 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13168 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13169 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13170 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13171 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13172 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13173 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13174 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13175 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13176 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13177 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13178 | remote_ops.to_static_tracepoint_marker_at |
13179 | = remote_static_tracepoint_marker_at; | |
13180 | remote_ops.to_static_tracepoint_markers_by_strid | |
13181 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13182 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13183 | remote_ops.to_use_agent = remote_use_agent; |
13184 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13185 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13186 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13187 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13188 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13189 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13190 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13191 | remote_ops.to_augmented_libraries_svr4_read = |
13192 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13193 | remote_ops.to_follow_fork = remote_follow_fork; |
13194 | remote_ops.to_follow_exec = remote_follow_exec; | |
13195 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13196 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13197 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13198 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13199 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13200 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
c906108c SS |
13201 | } |
13202 | ||
13203 | /* Set up the extended remote vector by making a copy of the standard | |
13204 | remote vector and adding to it. */ | |
13205 | ||
13206 | static void | |
fba45db2 | 13207 | init_extended_remote_ops (void) |
c906108c SS |
13208 | { |
13209 | extended_remote_ops = remote_ops; | |
13210 | ||
0f71a2f6 | 13211 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13212 | extended_remote_ops.to_longname = |
c906108c | 13213 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13214 | extended_remote_ops.to_doc = |
c906108c | 13215 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13216 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13217 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13218 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13219 | extended_remote_ops.to_detach = extended_remote_detach; |
13220 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13221 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13222 | extended_remote_ops.to_supports_disable_randomization |
13223 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13224 | } |
13225 | ||
6426a772 | 13226 | static int |
6a109b6b | 13227 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13228 | { |
5d93a237 TT |
13229 | struct remote_state *rs = get_remote_state (); |
13230 | ||
c6ebd6cf | 13231 | if (!target_async_permitted) |
75c99385 PA |
13232 | /* We only enable async when the user specifically asks for it. */ |
13233 | return 0; | |
13234 | ||
23860348 | 13235 | /* We're async whenever the serial device is. */ |
5d93a237 | 13236 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13237 | } |
13238 | ||
13239 | static int | |
6a109b6b | 13240 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13241 | { |
5d93a237 TT |
13242 | struct remote_state *rs = get_remote_state (); |
13243 | ||
c6ebd6cf | 13244 | if (!target_async_permitted) |
75c99385 PA |
13245 | /* We only enable async when the user specifically asks for it. */ |
13246 | return 0; | |
13247 | ||
23860348 | 13248 | /* We're async whenever the serial device is. */ |
5d93a237 | 13249 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13250 | } |
13251 | ||
2acceee2 JM |
13252 | /* Pass the SERIAL event on and up to the client. One day this code |
13253 | will be able to delay notifying the client of an event until the | |
23860348 | 13254 | point where an entire packet has been received. */ |
2acceee2 | 13255 | |
2acceee2 JM |
13256 | static serial_event_ftype remote_async_serial_handler; |
13257 | ||
6426a772 | 13258 | static void |
819cc324 | 13259 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13260 | { |
2acceee2 JM |
13261 | /* Don't propogate error information up to the client. Instead let |
13262 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13263 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13264 | } |
13265 | ||
74531fed PA |
13266 | static void |
13267 | remote_async_inferior_event_handler (gdb_client_data data) | |
13268 | { | |
13269 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13270 | } | |
13271 | ||
2acceee2 | 13272 | static void |
6a3753b3 | 13273 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13274 | { |
5d93a237 TT |
13275 | struct remote_state *rs = get_remote_state (); |
13276 | ||
6a3753b3 | 13277 | if (enable) |
2acceee2 | 13278 | { |
88b496c3 | 13279 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13280 | |
13281 | /* If there are pending events in the stop reply queue tell the | |
13282 | event loop to process them. */ | |
13283 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13284 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13285 | /* For simplicity, below we clear the pending events token |
13286 | without remembering whether it is marked, so here we always | |
13287 | mark it. If there's actually no pending notification to | |
13288 | process, this ends up being a no-op (other than a spurious | |
13289 | event-loop wakeup). */ | |
13290 | if (target_is_non_stop_p ()) | |
13291 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13292 | } |
13293 | else | |
b7d2e916 PA |
13294 | { |
13295 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13296 | /* If the core is disabling async, it doesn't want to be |
13297 | disturbed with target events. Clear all async event sources | |
13298 | too. */ | |
b7d2e916 | 13299 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13300 | if (target_is_non_stop_p ()) |
13301 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13302 | } |
6426a772 JM |
13303 | } |
13304 | ||
65706a29 PA |
13305 | /* Implementation of the to_thread_events method. */ |
13306 | ||
13307 | static void | |
13308 | remote_thread_events (struct target_ops *ops, int enable) | |
13309 | { | |
13310 | struct remote_state *rs = get_remote_state (); | |
13311 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
13312 | |
13313 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13314 | return; | |
13315 | ||
13316 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13317 | putpkt (rs->buf); | |
13318 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13319 | ||
13320 | switch (packet_ok (rs->buf, | |
13321 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13322 | { | |
13323 | case PACKET_OK: | |
13324 | if (strcmp (rs->buf, "OK") != 0) | |
13325 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13326 | break; | |
13327 | case PACKET_ERROR: | |
13328 | warning (_("Remote failure reply: %s"), rs->buf); | |
13329 | break; | |
13330 | case PACKET_UNKNOWN: | |
13331 | break; | |
13332 | } | |
13333 | } | |
13334 | ||
5a2468f5 | 13335 | static void |
c2d11a7d | 13336 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13337 | { |
635c7e8a | 13338 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13339 | } |
13340 | ||
d471ea57 AC |
13341 | static void |
13342 | show_remote_cmd (char *args, int from_tty) | |
13343 | { | |
37a105a1 | 13344 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13345 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
13346 | struct cleanup *showlist_chain; |
13347 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 13348 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
13349 | |
13350 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
13351 | for (; list != NULL; list = list->next) | |
13352 | if (strcmp (list->name, "Z-packet") == 0) | |
13353 | continue; | |
427c3a89 DJ |
13354 | else if (list->type == not_set_cmd) |
13355 | /* Alias commands are exactly like the original, except they | |
13356 | don't have the normal type. */ | |
13357 | continue; | |
13358 | else | |
37a105a1 DJ |
13359 | { |
13360 | struct cleanup *option_chain | |
13361 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 13362 | |
37a105a1 DJ |
13363 | ui_out_field_string (uiout, "name", list->name); |
13364 | ui_out_text (uiout, ": "); | |
427c3a89 | 13365 | if (list->type == show_cmd) |
5b9afe8a | 13366 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
13367 | else |
13368 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
13369 | /* Close the tuple. */ |
13370 | do_cleanups (option_chain); | |
13371 | } | |
427c3a89 DJ |
13372 | |
13373 | /* Close the tuple. */ | |
13374 | do_cleanups (showlist_chain); | |
d471ea57 | 13375 | } |
5a2468f5 | 13376 | |
0f71a2f6 | 13377 | |
23860348 | 13378 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13379 | static void |
13380 | remote_new_objfile (struct objfile *objfile) | |
13381 | { | |
5d93a237 TT |
13382 | struct remote_state *rs = get_remote_state (); |
13383 | ||
13384 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13385 | remote_check_symbols (); |
dc8acb97 MS |
13386 | } |
13387 | ||
00bf0b85 SS |
13388 | /* Pull all the tracepoints defined on the target and create local |
13389 | data structures representing them. We don't want to create real | |
13390 | tracepoints yet, we don't want to mess up the user's existing | |
13391 | collection. */ | |
13392 | ||
13393 | static int | |
ab6617cc | 13394 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13395 | { |
00bf0b85 SS |
13396 | struct remote_state *rs = get_remote_state (); |
13397 | char *p; | |
d5551862 | 13398 | |
00bf0b85 SS |
13399 | /* Ask for a first packet of tracepoint definition. */ |
13400 | putpkt ("qTfP"); | |
13401 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13402 | p = rs->buf; | |
13403 | while (*p && *p != 'l') | |
d5551862 | 13404 | { |
00bf0b85 SS |
13405 | parse_tracepoint_definition (p, utpp); |
13406 | /* Ask for another packet of tracepoint definition. */ | |
13407 | putpkt ("qTsP"); | |
13408 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13409 | p = rs->buf; | |
d5551862 | 13410 | } |
00bf0b85 | 13411 | return 0; |
d5551862 SS |
13412 | } |
13413 | ||
00bf0b85 | 13414 | static int |
181e3713 TT |
13415 | remote_upload_trace_state_variables (struct target_ops *self, |
13416 | struct uploaded_tsv **utsvp) | |
d5551862 | 13417 | { |
00bf0b85 | 13418 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13419 | char *p; |
d5551862 | 13420 | |
00bf0b85 SS |
13421 | /* Ask for a first packet of variable definition. */ |
13422 | putpkt ("qTfV"); | |
d5551862 SS |
13423 | getpkt (&rs->buf, &rs->buf_size, 0); |
13424 | p = rs->buf; | |
00bf0b85 | 13425 | while (*p && *p != 'l') |
d5551862 | 13426 | { |
00bf0b85 SS |
13427 | parse_tsv_definition (p, utsvp); |
13428 | /* Ask for another packet of variable definition. */ | |
13429 | putpkt ("qTsV"); | |
d5551862 SS |
13430 | getpkt (&rs->buf, &rs->buf_size, 0); |
13431 | p = rs->buf; | |
13432 | } | |
00bf0b85 | 13433 | return 0; |
d5551862 SS |
13434 | } |
13435 | ||
c1e36e3e PA |
13436 | /* The "set/show range-stepping" show hook. */ |
13437 | ||
13438 | static void | |
13439 | show_range_stepping (struct ui_file *file, int from_tty, | |
13440 | struct cmd_list_element *c, | |
13441 | const char *value) | |
13442 | { | |
13443 | fprintf_filtered (file, | |
13444 | _("Debugger's willingness to use range stepping " | |
13445 | "is %s.\n"), value); | |
13446 | } | |
13447 | ||
13448 | /* The "set/show range-stepping" set hook. */ | |
13449 | ||
13450 | static void | |
13451 | set_range_stepping (char *ignore_args, int from_tty, | |
13452 | struct cmd_list_element *c) | |
13453 | { | |
5d93a237 TT |
13454 | struct remote_state *rs = get_remote_state (); |
13455 | ||
c1e36e3e PA |
13456 | /* Whene enabling, check whether range stepping is actually |
13457 | supported by the target, and warn if not. */ | |
13458 | if (use_range_stepping) | |
13459 | { | |
5d93a237 | 13460 | if (rs->remote_desc != NULL) |
c1e36e3e | 13461 | { |
4082afcc | 13462 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13463 | remote_vcont_probe (rs); |
13464 | ||
4082afcc | 13465 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13466 | && rs->supports_vCont.r) |
13467 | return; | |
13468 | } | |
13469 | ||
13470 | warning (_("Range stepping is not supported by the current target")); | |
13471 | } | |
13472 | } | |
13473 | ||
c906108c | 13474 | void |
fba45db2 | 13475 | _initialize_remote (void) |
c906108c | 13476 | { |
9a7071a8 | 13477 | struct cmd_list_element *cmd; |
6f937416 | 13478 | const char *cmd_name; |
ea9c271d | 13479 | |
0f71a2f6 | 13480 | /* architecture specific data */ |
2bc416ba | 13481 | remote_gdbarch_data_handle = |
23860348 | 13482 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13483 | remote_g_packet_data_handle = |
13484 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13485 | |
94585166 DB |
13486 | remote_pspace_data |
13487 | = register_program_space_data_with_cleanup (NULL, | |
13488 | remote_pspace_data_cleanup); | |
13489 | ||
ea9c271d DJ |
13490 | /* Initialize the per-target state. At the moment there is only one |
13491 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13492 | time. */ |
13493 | remote_state = new_remote_state (); | |
ea9c271d | 13494 | |
c906108c SS |
13495 | init_remote_ops (); |
13496 | add_target (&remote_ops); | |
13497 | ||
13498 | init_extended_remote_ops (); | |
13499 | add_target (&extended_remote_ops); | |
cce74817 | 13500 | |
dc8acb97 | 13501 | /* Hook into new objfile notification. */ |
06d3b283 | 13502 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13503 | /* We're no longer interested in notification events of an inferior |
13504 | when it exits. */ | |
13505 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13506 | |
b803fb0f | 13507 | /* Set up signal handlers. */ |
934b9bac | 13508 | async_sigint_remote_token = |
b803fb0f | 13509 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 13510 | async_sigint_remote_twice_token = |
6d549500 | 13511 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 13512 | |
c906108c SS |
13513 | #if 0 |
13514 | init_remote_threadtests (); | |
13515 | #endif | |
13516 | ||
722247f1 | 13517 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13518 | /* set/show remote ... */ |
d471ea57 | 13519 | |
1bedd215 | 13520 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13521 | Remote protocol specific variables\n\ |
13522 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13523 | the packets being used"), |
cff3e48b | 13524 | &remote_set_cmdlist, "set remote ", |
23860348 | 13525 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13526 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13527 | Remote protocol specific variables\n\ |
13528 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13529 | the packets being used"), |
cff3e48b | 13530 | &remote_show_cmdlist, "show remote ", |
23860348 | 13531 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13532 | |
1a966eab AC |
13533 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13534 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13535 | Argument is a single section name (default: all loaded sections).\n\ |
13536 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13537 | &cmdlist); |
13538 | ||
1a966eab AC |
13539 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13540 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13541 | maintenance packet TEXT\n\ |
13542 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13543 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13544 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13545 | terminating `#' character and checksum."), |
c906108c SS |
13546 | &maintenancelist); |
13547 | ||
7915a72c AC |
13548 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13549 | Set whether to send break if interrupted."), _("\ | |
13550 | Show whether to send break if interrupted."), _("\ | |
13551 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13552 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13553 | &setlist, &showlist); |
9a7071a8 JB |
13554 | cmd_name = "remotebreak"; |
13555 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13556 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13557 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13558 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13559 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13560 | ||
13561 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13562 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13563 | _("\ | |
9a7071a8 JB |
13564 | Set interrupt sequence to remote target."), _("\ |
13565 | Show interrupt sequence to remote target."), _("\ | |
13566 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13567 | NULL, show_interrupt_sequence, | |
13568 | &remote_set_cmdlist, | |
13569 | &remote_show_cmdlist); | |
13570 | ||
13571 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13572 | &interrupt_on_connect, _("\ | |
13573 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13574 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13575 | If set, interrupt sequence is sent to remote target."), | |
13576 | NULL, NULL, | |
13577 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13578 | |
23860348 | 13579 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13580 | |
1a966eab AC |
13581 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13582 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13583 | &setlist); |
1a966eab AC |
13584 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13585 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13586 | &showlist); |
13587 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13588 | set_memory_write_packet_size, _("\ |
13589 | Set the maximum number of bytes per memory-write packet.\n\ | |
13590 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13591 | default packet size. The actual limit is further reduced\n\ | |
13592 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13593 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13594 | &remote_set_cmdlist); |
13595 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13596 | set_memory_read_packet_size, _("\ |
13597 | Set the maximum number of bytes per memory-read packet.\n\ | |
13598 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13599 | default packet size. The actual limit is further reduced\n\ | |
13600 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13601 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13602 | &remote_set_cmdlist); |
13603 | add_cmd ("memory-write-packet-size", no_class, | |
13604 | show_memory_write_packet_size, | |
1a966eab | 13605 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13606 | &remote_show_cmdlist); |
13607 | add_cmd ("memory-read-packet-size", no_class, | |
13608 | show_memory_read_packet_size, | |
1a966eab | 13609 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13610 | &remote_show_cmdlist); |
c906108c | 13611 | |
b3f42336 | 13612 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13613 | &remote_hw_watchpoint_limit, _("\ |
13614 | Set the maximum number of target hardware watchpoints."), _("\ | |
13615 | Show the maximum number of target hardware watchpoints."), _("\ | |
13616 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13617 | NULL, NULL, /* FIXME: i18n: The maximum |
13618 | number of target hardware | |
13619 | watchpoints is %s. */ | |
b3f42336 | 13620 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13621 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13622 | &remote_hw_watchpoint_length_limit, _("\ | |
13623 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13624 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13625 | Specify a negative limit for unlimited."), | |
13626 | NULL, NULL, /* FIXME: i18n: The maximum | |
13627 | length (in bytes) of a target | |
13628 | hardware watchpoint is %s. */ | |
13629 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13630 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13631 | &remote_hw_breakpoint_limit, _("\ |
13632 | Set the maximum number of target hardware breakpoints."), _("\ | |
13633 | Show the maximum number of target hardware breakpoints."), _("\ | |
13634 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13635 | NULL, NULL, /* FIXME: i18n: The maximum |
13636 | number of target hardware | |
13637 | breakpoints is %s. */ | |
b3f42336 | 13638 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13639 | |
1b493192 PA |
13640 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13641 | &remote_address_size, _("\ | |
4d28ad1e AC |
13642 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13643 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13644 | NULL, |
13645 | NULL, /* FIXME: i18n: */ | |
13646 | &setlist, &showlist); | |
c906108c | 13647 | |
ca4f7f8b PA |
13648 | init_all_packet_configs (); |
13649 | ||
444abaca | 13650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13651 | "X", "binary-download", 1); |
0f71a2f6 | 13652 | |
444abaca | 13653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13654 | "vCont", "verbose-resume", 0); |
506fb367 | 13655 | |
89be2091 DJ |
13656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13657 | "QPassSignals", "pass-signals", 0); | |
13658 | ||
82075af2 JS |
13659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
13660 | "QCatchSyscalls", "catch-syscalls", 0); | |
13661 | ||
9b224c5e PA |
13662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13663 | "QProgramSignals", "program-signals", 0); | |
13664 | ||
444abaca | 13665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13666 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13667 | |
444abaca | 13668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13669 | "P", "set-register", 1); |
d471ea57 | 13670 | |
444abaca | 13671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13672 | "p", "fetch-register", 1); |
b96ec7ac | 13673 | |
444abaca | 13674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13675 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13676 | |
444abaca | 13677 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13678 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13679 | |
444abaca | 13680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13681 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13682 | |
444abaca | 13683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13684 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13685 | |
444abaca | 13686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13687 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13688 | |
0876f84a DJ |
13689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13690 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13691 | |
c78fa86a GB |
13692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13693 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13694 | ||
23181151 DJ |
13695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13696 | "qXfer:features:read", "target-features", 0); | |
13697 | ||
cfa9d6d9 DJ |
13698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13699 | "qXfer:libraries:read", "library-info", 0); | |
13700 | ||
2268b414 JK |
13701 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13702 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13703 | ||
fd79ecee DJ |
13704 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13705 | "qXfer:memory-map:read", "memory-map", 0); | |
13706 | ||
0e7f50da UW |
13707 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13708 | "qXfer:spu:read", "read-spu-object", 0); | |
13709 | ||
13710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13711 | "qXfer:spu:write", "write-spu-object", 0); | |
13712 | ||
07e059b5 VP |
13713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13714 | "qXfer:osdata:read", "osdata", 0); | |
13715 | ||
dc146f7c VP |
13716 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13717 | "qXfer:threads:read", "threads", 0); | |
13718 | ||
4aa995e1 PA |
13719 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13720 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13721 | ||
13722 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13723 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13724 | ||
b3b9301e PA |
13725 | add_packet_config_cmd |
13726 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13727 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13728 | |
169081d0 TG |
13729 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13730 | "qXfer:uib:read", "unwind-info-block", 0); | |
13731 | ||
444abaca | 13732 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13733 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13734 | 0); |
13735 | ||
711e434b PM |
13736 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13737 | "qGetTIBAddr", "get-thread-information-block-address", | |
13738 | 0); | |
13739 | ||
40ab02ce MS |
13740 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13741 | "bc", "reverse-continue", 0); | |
13742 | ||
13743 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13744 | "bs", "reverse-step", 0); | |
13745 | ||
be2a5f71 DJ |
13746 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13747 | "qSupported", "supported-packets", 0); | |
13748 | ||
08388c79 DE |
13749 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13750 | "qSearch:memory", "search-memory", 0); | |
13751 | ||
bd3eecc3 PA |
13752 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13753 | "qTStatus", "trace-status", 0); | |
13754 | ||
15a201c8 GB |
13755 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13756 | "vFile:setfs", "hostio-setfs", 0); | |
13757 | ||
a6b151f1 DJ |
13758 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13759 | "vFile:open", "hostio-open", 0); | |
13760 | ||
13761 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13762 | "vFile:pread", "hostio-pread", 0); | |
13763 | ||
13764 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13765 | "vFile:pwrite", "hostio-pwrite", 0); | |
13766 | ||
13767 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13768 | "vFile:close", "hostio-close", 0); | |
13769 | ||
13770 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13771 | "vFile:unlink", "hostio-unlink", 0); | |
13772 | ||
b9e7b9c3 UW |
13773 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13774 | "vFile:readlink", "hostio-readlink", 0); | |
13775 | ||
0a93529c GB |
13776 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13777 | "vFile:fstat", "hostio-fstat", 0); | |
13778 | ||
2d717e4f DJ |
13779 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13780 | "vAttach", "attach", 0); | |
13781 | ||
13782 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13783 | "vRun", "run", 0); | |
13784 | ||
a6f3e723 SL |
13785 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13786 | "QStartNoAckMode", "noack", 0); | |
13787 | ||
82f73884 PA |
13788 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13789 | "vKill", "kill", 0); | |
13790 | ||
0b16c5cf PA |
13791 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13792 | "qAttached", "query-attached", 0); | |
13793 | ||
782b2b07 | 13794 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13795 | "ConditionalTracepoints", |
13796 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13797 | |
13798 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13799 | "ConditionalBreakpoints", | |
13800 | "conditional-breakpoints", 0); | |
13801 | ||
d3ce09f5 SS |
13802 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13803 | "BreakpointCommands", | |
13804 | "breakpoint-commands", 0); | |
13805 | ||
7a697b8d SS |
13806 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13807 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13808 | |
409873ef SS |
13809 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13810 | "TracepointSource", "TracepointSource", 0); | |
13811 | ||
d914c394 SS |
13812 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13813 | "QAllow", "allow", 0); | |
13814 | ||
0fb4aa4b PA |
13815 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13816 | "StaticTracepoints", "static-tracepoints", 0); | |
13817 | ||
1e4d1764 YQ |
13818 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13819 | "InstallInTrace", "install-in-trace", 0); | |
13820 | ||
0fb4aa4b PA |
13821 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13822 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13823 | ||
78d85199 YQ |
13824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13825 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13826 | ||
03583c20 UW |
13827 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13828 | "QDisableRandomization", "disable-randomization", 0); | |
13829 | ||
d1feda86 YQ |
13830 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13831 | "QAgent", "agent", 0); | |
13832 | ||
f6f899bf HAQ |
13833 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13834 | "QTBuffer:size", "trace-buffer-size", 0); | |
13835 | ||
9accd112 MM |
13836 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13837 | "Qbtrace:off", "disable-btrace", 0); | |
13838 | ||
13839 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13840 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13841 | ||
13842 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13843 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13844 | |
13845 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13846 | "qXfer:btrace", "read-btrace", 0); | |
13847 | ||
f4abbc16 MM |
13848 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13849 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13850 | ||
d33501a5 MM |
13851 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13852 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13853 | ||
73b8c1fd PA |
13854 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13855 | "multiprocess-feature", "multiprocess-feature", 0); | |
13856 | ||
f7e6eed5 PA |
13857 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13858 | "swbreak-feature", "swbreak-feature", 0); | |
13859 | ||
13860 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13861 | "hwbreak-feature", "hwbreak-feature", 0); | |
13862 | ||
89245bc0 DB |
13863 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13864 | "fork-event-feature", "fork-event-feature", 0); | |
13865 | ||
13866 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13867 | "vfork-event-feature", "vfork-event-feature", 0); | |
13868 | ||
b20a6524 MM |
13869 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13870 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13871 | ||
750ce8d1 YQ |
13872 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
13873 | "vContSupported", "verbose-resume-supported", 0); | |
13874 | ||
94585166 DB |
13875 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13876 | "exec-event-feature", "exec-event-feature", 0); | |
13877 | ||
de979965 PA |
13878 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
13879 | "vCtrlC", "ctrl-c", 0); | |
13880 | ||
65706a29 PA |
13881 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
13882 | "QThreadEvents", "thread-events", 0); | |
13883 | ||
f2faf941 PA |
13884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
13885 | "N stop reply", "no-resumed-stop-reply", 0); | |
13886 | ||
0b736949 DB |
13887 | /* Assert that we've registered "set remote foo-packet" commands |
13888 | for all packet configs. */ | |
ca4f7f8b PA |
13889 | { |
13890 | int i; | |
13891 | ||
13892 | for (i = 0; i < PACKET_MAX; i++) | |
13893 | { | |
13894 | /* Ideally all configs would have a command associated. Some | |
13895 | still don't though. */ | |
13896 | int excepted; | |
13897 | ||
13898 | switch (i) | |
13899 | { | |
13900 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13901 | case PACKET_EnableDisableTracepoints_feature: |
13902 | case PACKET_tracenz_feature: | |
13903 | case PACKET_DisconnectedTracing_feature: | |
13904 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13905 | case PACKET_qCRC: |
13906 | /* Additions to this list need to be well justified: | |
13907 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13908 | excepted = 1; |
13909 | break; | |
13910 | default: | |
13911 | excepted = 0; | |
13912 | break; | |
13913 | } | |
13914 | ||
13915 | /* This catches both forgetting to add a config command, and | |
13916 | forgetting to remove a packet from the exception list. */ | |
13917 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13918 | } | |
13919 | } | |
13920 | ||
37a105a1 DJ |
13921 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13922 | Z sub-packet has its own set and show commands, but users may | |
13923 | have sets to this variable in their .gdbinit files (or in their | |
13924 | documentation). */ | |
e9e68a56 | 13925 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13926 | &remote_Z_packet_detect, _("\ |
13927 | Set use of remote protocol `Z' packets"), _("\ | |
13928 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13929 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13930 | packets."), |
e9e68a56 | 13931 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13932 | show_remote_protocol_Z_packet_cmd, |
13933 | /* FIXME: i18n: Use of remote protocol | |
13934 | `Z' packets is %s. */ | |
e9e68a56 | 13935 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13936 | |
a6b151f1 DJ |
13937 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13938 | Manipulate files on the remote system\n\ | |
13939 | Transfer files to and from the remote target system."), | |
13940 | &remote_cmdlist, "remote ", | |
13941 | 0 /* allow-unknown */, &cmdlist); | |
13942 | ||
13943 | add_cmd ("put", class_files, remote_put_command, | |
13944 | _("Copy a local file to the remote system."), | |
13945 | &remote_cmdlist); | |
13946 | ||
13947 | add_cmd ("get", class_files, remote_get_command, | |
13948 | _("Copy a remote file to the local system."), | |
13949 | &remote_cmdlist); | |
13950 | ||
13951 | add_cmd ("delete", class_files, remote_delete_command, | |
13952 | _("Delete a remote file."), | |
13953 | &remote_cmdlist); | |
13954 | ||
2d717e4f | 13955 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13956 | &remote_exec_file_var, _("\ |
2d717e4f | 13957 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13958 | Show the remote pathname for \"run\""), NULL, |
13959 | set_remote_exec_file, | |
13960 | show_remote_exec_file, | |
13961 | &remote_set_cmdlist, | |
13962 | &remote_show_cmdlist); | |
2d717e4f | 13963 | |
c1e36e3e PA |
13964 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13965 | &use_range_stepping, _("\ | |
13966 | Enable or disable range stepping."), _("\ | |
13967 | Show whether target-assisted range stepping is enabled."), _("\ | |
13968 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13969 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13970 | of issuing multiple single-steps. This speeds up source level\n\ | |
13971 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13972 | stepping is supported by the target. The default is on."), | |
13973 | set_range_stepping, | |
13974 | show_range_stepping, | |
13975 | &setlist, | |
13976 | &showlist); | |
13977 | ||
449092f6 CV |
13978 | /* Eventually initialize fileio. See fileio.c */ |
13979 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13980 | |
ba348170 | 13981 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13982 | special ptids with it set to != 0. */ |
ba348170 PA |
13983 | magic_null_ptid = ptid_build (42000, -1, 1); |
13984 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13985 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13986 | |
13987 | target_buf_size = 2048; | |
224c3ddb | 13988 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 13989 | } |
10760264 | 13990 |