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 | { | |
769 | int sizeof_g_packet; | |
770 | struct packet_reg *regs; | |
771 | struct cleanup *old_chain; | |
772 | ||
773 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
774 | ||
224c3ddb | 775 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
776 | old_chain = make_cleanup (xfree, regs); |
777 | ||
778 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
779 | ||
780 | *pnum = regs[regnum].pnum; | |
781 | *poffset = regs[regnum].offset; | |
782 | ||
783 | do_cleanups (old_chain); | |
784 | ||
785 | return *pnum != -1; | |
786 | } | |
787 | ||
788 | static void * | |
789 | init_remote_state (struct gdbarch *gdbarch) | |
790 | { | |
791 | struct remote_state *rs = get_remote_state_raw (); | |
792 | struct remote_arch_state *rsa; | |
793 | ||
794 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
795 | ||
796 | /* Use the architecture to build a regnum<->pnum table, which will be | |
797 | 1:1 unless a feature set specifies otherwise. */ | |
798 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
799 | gdbarch_num_regs (gdbarch), | |
800 | struct packet_reg); | |
801 | ||
74ca34ce DJ |
802 | /* Record the maximum possible size of the g packet - it may turn out |
803 | to be smaller. */ | |
c21236dc | 804 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 805 | |
0df8b418 | 806 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
807 | remote stubs have a hardwired buffer size of 400 bytes |
808 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
809 | as the maximum packet-size to ensure that the packet and an extra | |
810 | NUL character can always fit in the buffer. This stops GDB | |
811 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
812 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
813 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 814 | |
ea9c271d DJ |
815 | /* This one is filled in when a ``g'' packet is received. */ |
816 | rsa->actual_register_packet_size = 0; | |
817 | ||
818 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
819 | default, adjust the size accordingly. Remember that each byte is |
820 | encoded as two characters. 32 is the overhead for the packet | |
821 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 822 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 823 | little. */ |
ea9c271d DJ |
824 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
825 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 826 | |
ea9c271d DJ |
827 | /* Make sure that the packet buffer is plenty big enough for |
828 | this architecture. */ | |
829 | if (rs->buf_size < rsa->remote_packet_size) | |
830 | { | |
831 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 832 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 833 | } |
6d820c5c | 834 | |
ea9c271d DJ |
835 | return rsa; |
836 | } | |
837 | ||
838 | /* Return the current allowed size of a remote packet. This is | |
839 | inferred from the current architecture, and should be used to | |
840 | limit the length of outgoing packets. */ | |
841 | static long | |
842 | get_remote_packet_size (void) | |
843 | { | |
be2a5f71 | 844 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
845 | struct remote_arch_state *rsa = get_remote_arch_state (); |
846 | ||
be2a5f71 DJ |
847 | if (rs->explicit_packet_size) |
848 | return rs->explicit_packet_size; | |
849 | ||
ea9c271d | 850 | return rsa->remote_packet_size; |
d01949b6 AC |
851 | } |
852 | ||
ad10f812 | 853 | static struct packet_reg * |
ea9c271d | 854 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 855 | { |
f5656ead | 856 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
857 | return NULL; |
858 | else | |
ad10f812 | 859 | { |
ea9c271d | 860 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 861 | |
b323314b AC |
862 | gdb_assert (r->regnum == regnum); |
863 | return r; | |
ad10f812 | 864 | } |
ad10f812 AC |
865 | } |
866 | ||
867 | static struct packet_reg * | |
ea9c271d | 868 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 869 | { |
b323314b | 870 | int i; |
a744cf53 | 871 | |
f5656ead | 872 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 873 | { |
ea9c271d | 874 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 875 | |
b323314b AC |
876 | if (r->pnum == pnum) |
877 | return r; | |
ad10f812 AC |
878 | } |
879 | return NULL; | |
d01949b6 AC |
880 | } |
881 | ||
c906108c SS |
882 | static struct target_ops remote_ops; |
883 | ||
884 | static struct target_ops extended_remote_ops; | |
885 | ||
6426a772 JM |
886 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
887 | ``forever'' still use the normal timeout mechanism. This is | |
888 | currently used by the ASYNC code to guarentee that target reads | |
889 | during the initial connect always time-out. Once getpkt has been | |
890 | modified to return a timeout indication and, in turn | |
891 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 892 | this can go away. */ |
6426a772 JM |
893 | static int wait_forever_enabled_p = 1; |
894 | ||
9a7071a8 JB |
895 | /* Allow the user to specify what sequence to send to the remote |
896 | when he requests a program interruption: Although ^C is usually | |
897 | what remote systems expect (this is the default, here), it is | |
898 | sometimes preferable to send a break. On other systems such | |
899 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
900 | is required in order to interrupt the execution. */ | |
901 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
902 | const char interrupt_sequence_break[] = "BREAK"; | |
903 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 904 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
905 | { |
906 | interrupt_sequence_control_c, | |
907 | interrupt_sequence_break, | |
908 | interrupt_sequence_break_g, | |
909 | NULL | |
910 | }; | |
911 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
912 | ||
913 | static void | |
914 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
915 | struct cmd_list_element *c, | |
916 | const char *value) | |
917 | { | |
918 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
919 | fprintf_filtered (file, | |
920 | _("Send the ASCII ETX character (Ctrl-c) " | |
921 | "to the remote target to interrupt the " | |
922 | "execution of the program.\n")); | |
923 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
924 | fprintf_filtered (file, | |
925 | _("send a break signal to the remote target " | |
926 | "to interrupt the execution of the program.\n")); | |
927 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
928 | fprintf_filtered (file, | |
929 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
930 | "the remote target to interrupt the execution " | |
931 | "of Linux kernel.\n")); | |
932 | else | |
933 | internal_error (__FILE__, __LINE__, | |
934 | _("Invalid value for interrupt_sequence_mode: %s."), | |
935 | interrupt_sequence_mode); | |
936 | } | |
6426a772 | 937 | |
9a7071a8 JB |
938 | /* This boolean variable specifies whether interrupt_sequence is sent |
939 | to the remote target when gdb connects to it. | |
940 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
941 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
942 | static int interrupt_on_connect = 0; | |
c906108c | 943 | |
9a7071a8 JB |
944 | /* This variable is used to implement the "set/show remotebreak" commands. |
945 | Since these commands are now deprecated in favor of "set/show remote | |
946 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
947 | static int remote_break; |
948 | ||
9a7071a8 JB |
949 | static void |
950 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
951 | { | |
952 | if (remote_break) | |
953 | interrupt_sequence_mode = interrupt_sequence_break; | |
954 | else | |
955 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
956 | } | |
957 | ||
958 | static void | |
959 | show_remotebreak (struct ui_file *file, int from_tty, | |
960 | struct cmd_list_element *c, | |
961 | const char *value) | |
962 | { | |
963 | } | |
964 | ||
c906108c SS |
965 | /* This variable sets the number of bits in an address that are to be |
966 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 967 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
968 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
969 | initial implementation of remote.c restricted the address sent in | |
970 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
971 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
972 | address was never sent. Since fixing this bug may cause a break in | |
973 | some remote targets this variable is principly provided to | |
23860348 | 974 | facilitate backward compatibility. */ |
c906108c | 975 | |
883b9c6c | 976 | static unsigned int remote_address_size; |
c906108c | 977 | |
75c99385 PA |
978 | /* Temporary to track who currently owns the terminal. See |
979 | remote_terminal_* for more details. */ | |
6426a772 JM |
980 | |
981 | static int remote_async_terminal_ours_p; | |
982 | ||
11cf8741 | 983 | \f |
11cf8741 | 984 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
985 | memory read/write packet. MIN (rsa->remote_packet_size, |
986 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 987 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
988 | (speed up transfers). The variables ``preferred_*'' (the user |
989 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 990 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
991 | |
992 | struct memory_packet_config | |
993 | { | |
994 | char *name; | |
995 | long size; | |
996 | int fixed_p; | |
997 | }; | |
998 | ||
a5c0808e PA |
999 | /* The default max memory-write-packet-size. The 16k is historical. |
1000 | (It came from older GDB's using alloca for buffers and the | |
1001 | knowledge (folklore?) that some hosts don't cope very well with | |
1002 | large alloca calls.) */ | |
1003 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1004 | ||
1005 | /* The minimum remote packet size for memory transfers. Ensures we | |
1006 | can write at least one byte. */ | |
1007 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1008 | ||
11cf8741 JM |
1009 | /* Compute the current size of a read/write packet. Since this makes |
1010 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1011 | ||
1012 | static long | |
1013 | get_memory_packet_size (struct memory_packet_config *config) | |
1014 | { | |
d01949b6 | 1015 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1016 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1017 | ||
11cf8741 JM |
1018 | long what_they_get; |
1019 | if (config->fixed_p) | |
1020 | { | |
1021 | if (config->size <= 0) | |
a5c0808e | 1022 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1023 | else |
1024 | what_they_get = config->size; | |
1025 | } | |
1026 | else | |
1027 | { | |
ea9c271d | 1028 | what_they_get = get_remote_packet_size (); |
23860348 | 1029 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1030 | if (config->size > 0 |
1031 | && what_they_get > config->size) | |
1032 | what_they_get = config->size; | |
be2a5f71 DJ |
1033 | |
1034 | /* Limit it to the size of the targets ``g'' response unless we have | |
1035 | permission from the stub to use a larger packet size. */ | |
1036 | if (rs->explicit_packet_size == 0 | |
1037 | && rsa->actual_register_packet_size > 0 | |
1038 | && what_they_get > rsa->actual_register_packet_size) | |
1039 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1040 | } |
a5c0808e PA |
1041 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1042 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1043 | |
1044 | /* Make sure there is room in the global buffer for this packet | |
1045 | (including its trailing NUL byte). */ | |
1046 | if (rs->buf_size < what_they_get + 1) | |
1047 | { | |
1048 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1049 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1050 | } |
1051 | ||
11cf8741 JM |
1052 | return what_they_get; |
1053 | } | |
1054 | ||
0df8b418 | 1055 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1056 | something really big then do a sanity check. */ |
11cf8741 JM |
1057 | |
1058 | static void | |
1059 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1060 | { | |
1061 | int fixed_p = config->fixed_p; | |
1062 | long size = config->size; | |
a744cf53 | 1063 | |
11cf8741 | 1064 | if (args == NULL) |
8a3fe4f8 | 1065 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1066 | else if (strcmp (args, "hard") == 0 |
1067 | || strcmp (args, "fixed") == 0) | |
1068 | fixed_p = 1; | |
1069 | else if (strcmp (args, "soft") == 0 | |
1070 | || strcmp (args, "limit") == 0) | |
1071 | fixed_p = 0; | |
1072 | else | |
1073 | { | |
1074 | char *end; | |
a744cf53 | 1075 | |
11cf8741 JM |
1076 | size = strtoul (args, &end, 0); |
1077 | if (args == end) | |
8a3fe4f8 | 1078 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1079 | |
1080 | /* Instead of explicitly capping the size of a packet to or | |
1081 | disallowing it, the user is allowed to set the size to | |
1082 | something arbitrarily large. */ | |
11cf8741 | 1083 | } |
a5c0808e PA |
1084 | |
1085 | /* So that the query shows the correct value. */ | |
1086 | if (size <= 0) | |
1087 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1088 | ||
23860348 | 1089 | /* Extra checks? */ |
11cf8741 JM |
1090 | if (fixed_p && !config->fixed_p) |
1091 | { | |
e2e0b3e5 AC |
1092 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1093 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1094 | config->name, size)) |
8a3fe4f8 | 1095 | error (_("Packet size not changed.")); |
11cf8741 | 1096 | } |
23860348 | 1097 | /* Update the config. */ |
11cf8741 JM |
1098 | config->fixed_p = fixed_p; |
1099 | config->size = size; | |
1100 | } | |
1101 | ||
1102 | static void | |
1103 | show_memory_packet_size (struct memory_packet_config *config) | |
1104 | { | |
a3f17187 | 1105 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1106 | if (config->fixed_p) |
a3f17187 | 1107 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1108 | get_memory_packet_size (config)); |
1109 | else | |
a3f17187 | 1110 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1111 | get_memory_packet_size (config)); |
1112 | } | |
1113 | ||
1114 | static struct memory_packet_config memory_write_packet_config = | |
1115 | { | |
1116 | "memory-write-packet-size", | |
1117 | }; | |
1118 | ||
1119 | static void | |
1120 | set_memory_write_packet_size (char *args, int from_tty) | |
1121 | { | |
1122 | set_memory_packet_size (args, &memory_write_packet_config); | |
1123 | } | |
1124 | ||
1125 | static void | |
1126 | show_memory_write_packet_size (char *args, int from_tty) | |
1127 | { | |
1128 | show_memory_packet_size (&memory_write_packet_config); | |
1129 | } | |
1130 | ||
1131 | static long | |
1132 | get_memory_write_packet_size (void) | |
1133 | { | |
1134 | return get_memory_packet_size (&memory_write_packet_config); | |
1135 | } | |
1136 | ||
1137 | static struct memory_packet_config memory_read_packet_config = | |
1138 | { | |
1139 | "memory-read-packet-size", | |
1140 | }; | |
1141 | ||
1142 | static void | |
1143 | set_memory_read_packet_size (char *args, int from_tty) | |
1144 | { | |
1145 | set_memory_packet_size (args, &memory_read_packet_config); | |
1146 | } | |
1147 | ||
1148 | static void | |
1149 | show_memory_read_packet_size (char *args, int from_tty) | |
1150 | { | |
1151 | show_memory_packet_size (&memory_read_packet_config); | |
1152 | } | |
1153 | ||
1154 | static long | |
1155 | get_memory_read_packet_size (void) | |
1156 | { | |
1157 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1158 | |
11cf8741 JM |
1159 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1160 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1161 | increased beyond this. */ |
1162 | if (size > get_remote_packet_size ()) | |
1163 | size = get_remote_packet_size (); | |
11cf8741 JM |
1164 | return size; |
1165 | } | |
1166 | ||
11cf8741 | 1167 | \f |
5a2468f5 | 1168 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1169 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1170 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1171 | |
1172 | enum packet_support | |
1173 | { | |
1174 | PACKET_SUPPORT_UNKNOWN = 0, | |
1175 | PACKET_ENABLE, | |
1176 | PACKET_DISABLE | |
1177 | }; | |
1178 | ||
5a2468f5 JM |
1179 | struct packet_config |
1180 | { | |
bb572ddd DJ |
1181 | const char *name; |
1182 | const char *title; | |
4082afcc PA |
1183 | |
1184 | /* If auto, GDB auto-detects support for this packet or feature, | |
1185 | either through qSupported, or by trying the packet and looking | |
1186 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1187 | packet. If false, the packet is disabled. Configs that don't |
1188 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1189 | enum auto_boolean detect; |
4082afcc PA |
1190 | |
1191 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1192 | enum packet_support support; |
1193 | }; | |
1194 | ||
d471ea57 | 1195 | /* Analyze a packet's return value and update the packet config |
23860348 | 1196 | accordingly. */ |
d471ea57 AC |
1197 | |
1198 | enum packet_result | |
1199 | { | |
1200 | PACKET_ERROR, | |
1201 | PACKET_OK, | |
1202 | PACKET_UNKNOWN | |
1203 | }; | |
1204 | ||
4082afcc PA |
1205 | static enum packet_support packet_config_support (struct packet_config *config); |
1206 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1207 | |
1208 | static void | |
fba45db2 | 1209 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1210 | { |
1211 | char *support = "internal-error"; | |
a744cf53 | 1212 | |
4082afcc | 1213 | switch (packet_config_support (config)) |
5a2468f5 JM |
1214 | { |
1215 | case PACKET_ENABLE: | |
1216 | support = "enabled"; | |
1217 | break; | |
1218 | case PACKET_DISABLE: | |
1219 | support = "disabled"; | |
1220 | break; | |
1221 | case PACKET_SUPPORT_UNKNOWN: | |
1222 | support = "unknown"; | |
1223 | break; | |
1224 | } | |
1225 | switch (config->detect) | |
1226 | { | |
7f19b9a2 | 1227 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1228 | printf_filtered (_("Support for the `%s' packet " |
1229 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1230 | config->name, support); |
5a2468f5 | 1231 | break; |
7f19b9a2 AC |
1232 | case AUTO_BOOLEAN_TRUE: |
1233 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1234 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1235 | config->name, support); | |
8e248173 | 1236 | break; |
5a2468f5 JM |
1237 | } |
1238 | } | |
1239 | ||
1240 | static void | |
bb572ddd DJ |
1241 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1242 | const char *title, int legacy) | |
d471ea57 | 1243 | { |
5a2468f5 JM |
1244 | char *set_doc; |
1245 | char *show_doc; | |
d471ea57 | 1246 | char *cmd_name; |
3ed07be4 | 1247 | |
5a2468f5 JM |
1248 | config->name = name; |
1249 | config->title = title; | |
b435e160 AC |
1250 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1251 | name, title); | |
3e43a32a MS |
1252 | show_doc = xstrprintf ("Show current use of remote " |
1253 | "protocol `%s' (%s) packet", | |
b435e160 | 1254 | name, title); |
d471ea57 | 1255 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1256 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1257 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1258 | &config->detect, set_doc, |
1259 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1260 | NULL, |
bb572ddd DJ |
1261 | show_remote_protocol_packet_cmd, |
1262 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1263 | /* The command code copies the documentation strings. */ |
1264 | xfree (set_doc); | |
1265 | xfree (show_doc); | |
23860348 | 1266 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1267 | if (legacy) |
1268 | { | |
1269 | char *legacy_name; | |
a744cf53 | 1270 | |
b435e160 | 1271 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1272 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1273 | &remote_set_cmdlist); |
d471ea57 | 1274 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1275 | &remote_show_cmdlist); |
d471ea57 | 1276 | } |
5a2468f5 JM |
1277 | } |
1278 | ||
d471ea57 | 1279 | static enum packet_result |
a76d924d | 1280 | packet_check_result (const char *buf) |
5a2468f5 | 1281 | { |
d471ea57 | 1282 | if (buf[0] != '\0') |
5a2468f5 | 1283 | { |
d471ea57 | 1284 | /* The stub recognized the packet request. Check that the |
23860348 | 1285 | operation succeeded. */ |
a76d924d DJ |
1286 | if (buf[0] == 'E' |
1287 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1288 | && buf[3] == '\0') | |
1289 | /* "Enn" - definitly an error. */ | |
1290 | return PACKET_ERROR; | |
1291 | ||
1292 | /* Always treat "E." as an error. This will be used for | |
1293 | more verbose error messages, such as E.memtypes. */ | |
1294 | if (buf[0] == 'E' && buf[1] == '.') | |
1295 | return PACKET_ERROR; | |
1296 | ||
1297 | /* The packet may or may not be OK. Just assume it is. */ | |
1298 | return PACKET_OK; | |
1299 | } | |
1300 | else | |
1301 | /* The stub does not support the packet. */ | |
1302 | return PACKET_UNKNOWN; | |
1303 | } | |
1304 | ||
1305 | static enum packet_result | |
1306 | packet_ok (const char *buf, struct packet_config *config) | |
1307 | { | |
1308 | enum packet_result result; | |
1309 | ||
4082afcc PA |
1310 | if (config->detect != AUTO_BOOLEAN_TRUE |
1311 | && config->support == PACKET_DISABLE) | |
1312 | internal_error (__FILE__, __LINE__, | |
1313 | _("packet_ok: attempt to use a disabled packet")); | |
1314 | ||
a76d924d DJ |
1315 | result = packet_check_result (buf); |
1316 | switch (result) | |
1317 | { | |
1318 | case PACKET_OK: | |
1319 | case PACKET_ERROR: | |
1320 | /* The stub recognized the packet request. */ | |
4082afcc | 1321 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1322 | { |
d471ea57 AC |
1323 | if (remote_debug) |
1324 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1325 | "Packet %s (%s) is supported\n", |
1326 | config->name, config->title); | |
d471ea57 | 1327 | config->support = PACKET_ENABLE; |
d471ea57 | 1328 | } |
a76d924d DJ |
1329 | break; |
1330 | case PACKET_UNKNOWN: | |
23860348 | 1331 | /* The stub does not support the packet. */ |
4082afcc PA |
1332 | if (config->detect == AUTO_BOOLEAN_AUTO |
1333 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1334 | { |
4082afcc PA |
1335 | /* If the stub previously indicated that the packet was |
1336 | supported then there is a protocol error. */ | |
1337 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1338 | config->name, config->title); | |
1339 | } | |
1340 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1341 | { | |
1342 | /* The user set it wrong. */ | |
1343 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1344 | config->name, config->title); | |
d471ea57 | 1345 | } |
4082afcc PA |
1346 | |
1347 | if (remote_debug) | |
1348 | fprintf_unfiltered (gdb_stdlog, | |
1349 | "Packet %s (%s) is NOT supported\n", | |
1350 | config->name, config->title); | |
1351 | config->support = PACKET_DISABLE; | |
a76d924d | 1352 | break; |
5a2468f5 | 1353 | } |
a76d924d DJ |
1354 | |
1355 | return result; | |
5a2468f5 JM |
1356 | } |
1357 | ||
444abaca DJ |
1358 | enum { |
1359 | PACKET_vCont = 0, | |
1360 | PACKET_X, | |
1361 | PACKET_qSymbol, | |
1362 | PACKET_P, | |
1363 | PACKET_p, | |
1364 | PACKET_Z0, | |
1365 | PACKET_Z1, | |
1366 | PACKET_Z2, | |
1367 | PACKET_Z3, | |
1368 | PACKET_Z4, | |
15a201c8 | 1369 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1370 | PACKET_vFile_open, |
1371 | PACKET_vFile_pread, | |
1372 | PACKET_vFile_pwrite, | |
1373 | PACKET_vFile_close, | |
1374 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1375 | PACKET_vFile_readlink, |
0a93529c | 1376 | PACKET_vFile_fstat, |
0876f84a | 1377 | PACKET_qXfer_auxv, |
23181151 | 1378 | PACKET_qXfer_features, |
c78fa86a | 1379 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1380 | PACKET_qXfer_libraries, |
2268b414 | 1381 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1382 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1383 | PACKET_qXfer_spu_read, |
1384 | PACKET_qXfer_spu_write, | |
07e059b5 | 1385 | PACKET_qXfer_osdata, |
dc146f7c | 1386 | PACKET_qXfer_threads, |
0fb4aa4b | 1387 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1388 | PACKET_qXfer_traceframe_info, |
169081d0 | 1389 | PACKET_qXfer_uib, |
711e434b | 1390 | PACKET_qGetTIBAddr, |
444abaca | 1391 | PACKET_qGetTLSAddr, |
be2a5f71 | 1392 | PACKET_qSupported, |
bd3eecc3 | 1393 | PACKET_qTStatus, |
89be2091 | 1394 | PACKET_QPassSignals, |
82075af2 | 1395 | PACKET_QCatchSyscalls, |
9b224c5e | 1396 | PACKET_QProgramSignals, |
936d2992 | 1397 | PACKET_qCRC, |
08388c79 | 1398 | PACKET_qSearch_memory, |
2d717e4f DJ |
1399 | PACKET_vAttach, |
1400 | PACKET_vRun, | |
a6f3e723 | 1401 | PACKET_QStartNoAckMode, |
82f73884 | 1402 | PACKET_vKill, |
4aa995e1 PA |
1403 | PACKET_qXfer_siginfo_read, |
1404 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1405 | PACKET_qAttached, |
4082afcc PA |
1406 | |
1407 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1408 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1409 | |
1410 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1411 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1412 | |
1413 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1414 | PACKET_BreakpointCommands, |
4082afcc PA |
1415 | |
1416 | /* Support for fast tracepoints. */ | |
7a697b8d | 1417 | PACKET_FastTracepoints, |
4082afcc PA |
1418 | |
1419 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1420 | PACKET_StaticTracepoints, |
4082afcc PA |
1421 | |
1422 | /* Support for installing tracepoints while a trace experiment is | |
1423 | running. */ | |
1e4d1764 | 1424 | PACKET_InstallInTrace, |
4082afcc | 1425 | |
40ab02ce MS |
1426 | PACKET_bc, |
1427 | PACKET_bs, | |
409873ef | 1428 | PACKET_TracepointSource, |
d914c394 | 1429 | PACKET_QAllow, |
78d85199 | 1430 | PACKET_qXfer_fdpic, |
03583c20 | 1431 | PACKET_QDisableRandomization, |
d1feda86 | 1432 | PACKET_QAgent, |
f6f899bf | 1433 | PACKET_QTBuffer_size, |
9accd112 MM |
1434 | PACKET_Qbtrace_off, |
1435 | PACKET_Qbtrace_bts, | |
b20a6524 | 1436 | PACKET_Qbtrace_pt, |
9accd112 | 1437 | PACKET_qXfer_btrace, |
4082afcc PA |
1438 | |
1439 | /* Support for the QNonStop packet. */ | |
1440 | PACKET_QNonStop, | |
1441 | ||
65706a29 PA |
1442 | /* Support for the QThreadEvents packet. */ |
1443 | PACKET_QThreadEvents, | |
1444 | ||
4082afcc PA |
1445 | /* Support for multi-process extensions. */ |
1446 | PACKET_multiprocess_feature, | |
1447 | ||
1448 | /* Support for enabling and disabling tracepoints while a trace | |
1449 | experiment is running. */ | |
1450 | PACKET_EnableDisableTracepoints_feature, | |
1451 | ||
1452 | /* Support for collecting strings using the tracenz bytecode. */ | |
1453 | PACKET_tracenz_feature, | |
1454 | ||
1455 | /* Support for continuing to run a trace experiment while GDB is | |
1456 | disconnected. */ | |
1457 | PACKET_DisconnectedTracing_feature, | |
1458 | ||
1459 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1460 | PACKET_augmented_libraries_svr4_read_feature, | |
1461 | ||
f4abbc16 MM |
1462 | /* Support for the qXfer:btrace-conf:read packet. */ |
1463 | PACKET_qXfer_btrace_conf, | |
1464 | ||
d33501a5 MM |
1465 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1466 | PACKET_Qbtrace_conf_bts_size, | |
1467 | ||
f7e6eed5 PA |
1468 | /* Support for swbreak+ feature. */ |
1469 | PACKET_swbreak_feature, | |
1470 | ||
1471 | /* Support for hwbreak+ feature. */ | |
1472 | PACKET_hwbreak_feature, | |
1473 | ||
89245bc0 DB |
1474 | /* Support for fork events. */ |
1475 | PACKET_fork_event_feature, | |
1476 | ||
1477 | /* Support for vfork events. */ | |
1478 | PACKET_vfork_event_feature, | |
1479 | ||
b20a6524 MM |
1480 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1481 | PACKET_Qbtrace_conf_pt_size, | |
1482 | ||
94585166 DB |
1483 | /* Support for exec events. */ |
1484 | PACKET_exec_event_feature, | |
1485 | ||
750ce8d1 YQ |
1486 | /* Support for query supported vCont actions. */ |
1487 | PACKET_vContSupported, | |
1488 | ||
de979965 PA |
1489 | /* Support remote CTRL-C. */ |
1490 | PACKET_vCtrlC, | |
1491 | ||
f2faf941 PA |
1492 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
1493 | PACKET_no_resumed, | |
1494 | ||
444abaca DJ |
1495 | PACKET_MAX |
1496 | }; | |
506fb367 | 1497 | |
444abaca | 1498 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1499 | |
f7e6eed5 PA |
1500 | /* Returns the packet's corresponding "set remote foo-packet" command |
1501 | state. See struct packet_config for more details. */ | |
1502 | ||
1503 | static enum auto_boolean | |
1504 | packet_set_cmd_state (int packet) | |
1505 | { | |
1506 | return remote_protocol_packets[packet].detect; | |
1507 | } | |
1508 | ||
4082afcc PA |
1509 | /* Returns whether a given packet or feature is supported. This takes |
1510 | into account the state of the corresponding "set remote foo-packet" | |
1511 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1512 | |
4082afcc PA |
1513 | static enum packet_support |
1514 | packet_config_support (struct packet_config *config) | |
1515 | { | |
1516 | switch (config->detect) | |
444abaca | 1517 | { |
4082afcc PA |
1518 | case AUTO_BOOLEAN_TRUE: |
1519 | return PACKET_ENABLE; | |
1520 | case AUTO_BOOLEAN_FALSE: | |
1521 | return PACKET_DISABLE; | |
1522 | case AUTO_BOOLEAN_AUTO: | |
1523 | return config->support; | |
1524 | default: | |
1525 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1526 | } |
4082afcc PA |
1527 | } |
1528 | ||
1529 | /* Same as packet_config_support, but takes the packet's enum value as | |
1530 | argument. */ | |
1531 | ||
1532 | static enum packet_support | |
1533 | packet_support (int packet) | |
1534 | { | |
1535 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1536 | ||
1537 | return packet_config_support (config); | |
dc8acb97 MS |
1538 | } |
1539 | ||
5a2468f5 | 1540 | static void |
444abaca DJ |
1541 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1542 | struct cmd_list_element *c, | |
1543 | const char *value) | |
5a2468f5 | 1544 | { |
444abaca | 1545 | struct packet_config *packet; |
5a2468f5 | 1546 | |
444abaca DJ |
1547 | for (packet = remote_protocol_packets; |
1548 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1549 | packet++) | |
1550 | { | |
1551 | if (&packet->detect == c->var) | |
1552 | { | |
1553 | show_packet_config_cmd (packet); | |
1554 | return; | |
1555 | } | |
1556 | } | |
9b20d036 | 1557 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1558 | c->name); |
5a2468f5 JM |
1559 | } |
1560 | ||
d471ea57 AC |
1561 | /* Should we try one of the 'Z' requests? */ |
1562 | ||
1563 | enum Z_packet_type | |
1564 | { | |
1565 | Z_PACKET_SOFTWARE_BP, | |
1566 | Z_PACKET_HARDWARE_BP, | |
1567 | Z_PACKET_WRITE_WP, | |
1568 | Z_PACKET_READ_WP, | |
1569 | Z_PACKET_ACCESS_WP, | |
1570 | NR_Z_PACKET_TYPES | |
1571 | }; | |
96baa820 | 1572 | |
d471ea57 | 1573 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1574 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1575 | |
7f19b9a2 | 1576 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1577 | |
1578 | static void | |
fba45db2 KB |
1579 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1580 | struct cmd_list_element *c) | |
96baa820 | 1581 | { |
d471ea57 | 1582 | int i; |
a744cf53 | 1583 | |
d471ea57 | 1584 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1585 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1586 | } |
1587 | ||
1588 | static void | |
08546159 AC |
1589 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1590 | struct cmd_list_element *c, | |
1591 | const char *value) | |
96baa820 | 1592 | { |
d471ea57 | 1593 | int i; |
a744cf53 | 1594 | |
d471ea57 AC |
1595 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1596 | { | |
444abaca | 1597 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1598 | } |
96baa820 JM |
1599 | } |
1600 | ||
4082afcc PA |
1601 | /* Returns true if the multi-process extensions are in effect. */ |
1602 | ||
1603 | static int | |
1604 | remote_multi_process_p (struct remote_state *rs) | |
1605 | { | |
1606 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1607 | } | |
1608 | ||
de0d863e DB |
1609 | /* Returns true if fork events are supported. */ |
1610 | ||
1611 | static int | |
1612 | remote_fork_event_p (struct remote_state *rs) | |
1613 | { | |
1614 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1615 | } | |
1616 | ||
c269dbdb DB |
1617 | /* Returns true if vfork events are supported. */ |
1618 | ||
1619 | static int | |
1620 | remote_vfork_event_p (struct remote_state *rs) | |
1621 | { | |
1622 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1623 | } | |
1624 | ||
d46addbb DB |
1625 | /* Returns true if exec events are supported. */ |
1626 | ||
1627 | static int | |
1628 | remote_exec_event_p (struct remote_state *rs) | |
1629 | { | |
1630 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1631 | } | |
1632 | ||
cbb8991c DB |
1633 | /* Insert fork catchpoint target routine. If fork events are enabled |
1634 | then return success, nothing more to do. */ | |
1635 | ||
1636 | static int | |
1637 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1638 | { | |
1639 | struct remote_state *rs = get_remote_state (); | |
1640 | ||
1641 | return !remote_fork_event_p (rs); | |
1642 | } | |
1643 | ||
1644 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1645 | return success. */ | |
1646 | ||
1647 | static int | |
1648 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1649 | { | |
1650 | return 0; | |
1651 | } | |
1652 | ||
1653 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1654 | then return success, nothing more to do. */ | |
1655 | ||
1656 | static int | |
1657 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1658 | { | |
1659 | struct remote_state *rs = get_remote_state (); | |
1660 | ||
1661 | return !remote_vfork_event_p (rs); | |
1662 | } | |
1663 | ||
1664 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1665 | return success. */ | |
1666 | ||
1667 | static int | |
1668 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1669 | { | |
1670 | return 0; | |
1671 | } | |
1672 | ||
d46addbb DB |
1673 | /* Insert exec catchpoint target routine. If exec events are |
1674 | enabled, just return success. */ | |
1675 | ||
1676 | static int | |
1677 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1678 | { | |
1679 | struct remote_state *rs = get_remote_state (); | |
1680 | ||
1681 | return !remote_exec_event_p (rs); | |
1682 | } | |
1683 | ||
1684 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1685 | return success. */ | |
1686 | ||
1687 | static int | |
1688 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1689 | { | |
1690 | return 0; | |
1691 | } | |
1692 | ||
23860348 | 1693 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1694 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1695 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1696 | |
74531fed PA |
1697 | \f |
1698 | /* Asynchronous signal handle registered as event loop source for | |
1699 | when we have pending events ready to be passed to the core. */ | |
1700 | ||
1701 | static struct async_event_handler *remote_async_inferior_event_token; | |
1702 | ||
c906108c SS |
1703 | \f |
1704 | ||
79d7f229 PA |
1705 | static ptid_t magic_null_ptid; |
1706 | static ptid_t not_sent_ptid; | |
1707 | static ptid_t any_thread_ptid; | |
1708 | ||
0b16c5cf PA |
1709 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1710 | detach instead of killing it when bailing out). */ | |
1711 | ||
1712 | static int | |
1713 | remote_query_attached (int pid) | |
1714 | { | |
1715 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1716 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1717 | |
4082afcc | 1718 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1719 | return 0; |
1720 | ||
1721 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1722 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1723 | else |
bba74b36 | 1724 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1725 | |
1726 | putpkt (rs->buf); | |
1727 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1728 | ||
1729 | switch (packet_ok (rs->buf, | |
1554e9be | 1730 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1731 | { |
1732 | case PACKET_OK: | |
1733 | if (strcmp (rs->buf, "1") == 0) | |
1734 | return 1; | |
1735 | break; | |
1736 | case PACKET_ERROR: | |
1737 | warning (_("Remote failure reply: %s"), rs->buf); | |
1738 | break; | |
1739 | case PACKET_UNKNOWN: | |
1740 | break; | |
1741 | } | |
1742 | ||
1743 | return 0; | |
1744 | } | |
1745 | ||
49c62f2e PA |
1746 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1747 | has been invented by GDB, instead of reported by the target. Since | |
1748 | we can be connected to a remote system before before knowing about | |
1749 | any inferior, mark the target with execution when we find the first | |
1750 | inferior. If ATTACHED is 1, then we had just attached to this | |
1751 | inferior. If it is 0, then we just created this inferior. If it | |
1752 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1753 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1754 | attempt to open this inferior's executable as the main executable | |
1755 | if no main executable is open already. */ | |
1941c569 PA |
1756 | |
1757 | static struct inferior * | |
1b6e6f5c GB |
1758 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1759 | int try_open_exec) | |
1941c569 | 1760 | { |
1941c569 PA |
1761 | struct inferior *inf; |
1762 | ||
0b16c5cf PA |
1763 | /* Check whether this process we're learning about is to be |
1764 | considered attached, or if is to be considered to have been | |
1765 | spawned by the stub. */ | |
1766 | if (attached == -1) | |
1767 | attached = remote_query_attached (pid); | |
1768 | ||
f5656ead | 1769 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1770 | { |
1771 | /* If the target shares code across all inferiors, then every | |
1772 | attach adds a new inferior. */ | |
1773 | inf = add_inferior (pid); | |
1774 | ||
1775 | /* ... and every inferior is bound to the same program space. | |
1776 | However, each inferior may still have its own address | |
1777 | space. */ | |
1778 | inf->aspace = maybe_new_address_space (); | |
1779 | inf->pspace = current_program_space; | |
1780 | } | |
1781 | else | |
1782 | { | |
1783 | /* In the traditional debugging scenario, there's a 1-1 match | |
1784 | between program/address spaces. We simply bind the inferior | |
1785 | to the program space's address space. */ | |
1786 | inf = current_inferior (); | |
1787 | inferior_appeared (inf, pid); | |
1788 | } | |
1941c569 | 1789 | |
0b16c5cf | 1790 | inf->attach_flag = attached; |
49c62f2e | 1791 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1792 | |
1b6e6f5c GB |
1793 | /* If no main executable is currently open then attempt to |
1794 | open the file that was executed to create this inferior. */ | |
835205d0 | 1795 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1796 | exec_file_locate_attach (pid, 1); |
1797 | ||
1941c569 PA |
1798 | return inf; |
1799 | } | |
1800 | ||
1801 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1802 | according to RUNNING. */ | |
1803 | ||
c906108c | 1804 | static void |
1941c569 | 1805 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1806 | { |
b7ea362b PA |
1807 | struct remote_state *rs = get_remote_state (); |
1808 | ||
1809 | /* GDB historically didn't pull threads in the initial connection | |
1810 | setup. If the remote target doesn't even have a concept of | |
1811 | threads (e.g., a bare-metal target), even if internally we | |
1812 | consider that a single-threaded target, mentioning a new thread | |
1813 | might be confusing to the user. Be silent then, preserving the | |
1814 | age old behavior. */ | |
1815 | if (rs->starting_up) | |
1816 | add_thread_silent (ptid); | |
1817 | else | |
1818 | add_thread (ptid); | |
1941c569 PA |
1819 | |
1820 | set_executing (ptid, running); | |
1821 | set_running (ptid, running); | |
1822 | } | |
1823 | ||
1824 | /* Come here when we learn about a thread id from the remote target. | |
1825 | It may be the first time we hear about such thread, so take the | |
1826 | opportunity to add it to GDB's thread list. In case this is the | |
1827 | first time we're noticing its corresponding inferior, add it to | |
1828 | GDB's inferior list as well. */ | |
1829 | ||
1830 | static void | |
1831 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1832 | { | |
c906108c SS |
1833 | /* If this is a new thread, add it to GDB's thread list. |
1834 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1835 | |
1836 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1837 | { | |
1838 | /* We're seeing an event on a thread id we knew had exited. | |
1839 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1840 | remote_add_thread (currthread, running); |
82f73884 PA |
1841 | return; |
1842 | } | |
1843 | ||
79d7f229 | 1844 | if (!in_thread_list (currthread)) |
c0a2216e | 1845 | { |
1941c569 | 1846 | struct inferior *inf = NULL; |
bad34192 | 1847 | int pid = ptid_get_pid (currthread); |
1941c569 | 1848 | |
bad34192 PA |
1849 | if (ptid_is_pid (inferior_ptid) |
1850 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1851 | { |
1852 | /* inferior_ptid has no thread member yet. This can happen | |
1853 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1854 | stub doesn't support qC. This is the first stop reported | |
1855 | after an attach, so this is the main thread. Update the | |
1856 | ptid in the thread list. */ | |
bad34192 PA |
1857 | if (in_thread_list (pid_to_ptid (pid))) |
1858 | thread_change_ptid (inferior_ptid, currthread); | |
1859 | else | |
1860 | { | |
1861 | remote_add_thread (currthread, running); | |
1862 | inferior_ptid = currthread; | |
1863 | } | |
dc146f7c | 1864 | return; |
c0a2216e | 1865 | } |
82f73884 PA |
1866 | |
1867 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1868 | { |
1869 | /* inferior_ptid is not set yet. This can happen with the | |
1870 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1871 | 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. */ | |
dc146f7c | 1874 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1875 | return; |
c0a2216e | 1876 | } |
82f73884 | 1877 | |
29c87f7f PA |
1878 | /* When connecting to a target remote, or to a target |
1879 | extended-remote which already was debugging an inferior, we | |
1880 | may not know about it yet. Add it before adding its child | |
1881 | thread, so notifications are emitted in a sensible order. */ | |
1882 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1883 | { |
1884 | struct remote_state *rs = get_remote_state (); | |
1885 | int fake_pid_p = !remote_multi_process_p (rs); | |
1886 | ||
1887 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1888 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1889 | } |
29c87f7f | 1890 | |
82f73884 | 1891 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1892 | remote_add_thread (currthread, running); |
1893 | ||
1894 | /* If we found a new inferior, let the common code do whatever | |
1895 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1896 | breakpoints), unless we're just setting up an all-stop |
1897 | connection. */ | |
1941c569 | 1898 | if (inf != NULL) |
b7ea362b PA |
1899 | { |
1900 | struct remote_state *rs = get_remote_state (); | |
1901 | ||
6efcd9a8 | 1902 | if (!rs->starting_up) |
b7ea362b PA |
1903 | notice_new_inferior (currthread, running, 0); |
1904 | } | |
c0a2216e | 1905 | } |
c906108c SS |
1906 | } |
1907 | ||
dc146f7c VP |
1908 | /* Return the private thread data, creating it if necessary. */ |
1909 | ||
70221824 | 1910 | static struct private_thread_info * |
dc146f7c VP |
1911 | demand_private_info (ptid_t ptid) |
1912 | { | |
1913 | struct thread_info *info = find_thread_ptid (ptid); | |
1914 | ||
1915 | gdb_assert (info); | |
1916 | ||
fe978cb0 | 1917 | if (!info->priv) |
dc146f7c | 1918 | { |
8d749320 | 1919 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1920 | info->private_dtor = free_private_thread_info; |
fe978cb0 | 1921 | info->priv->core = -1; |
8020350c DB |
1922 | info->priv->extra = NULL; |
1923 | info->priv->name = NULL; | |
dc146f7c VP |
1924 | } |
1925 | ||
fe978cb0 | 1926 | return info->priv; |
dc146f7c VP |
1927 | } |
1928 | ||
74531fed PA |
1929 | /* Call this function as a result of |
1930 | 1) A halt indication (T packet) containing a thread id | |
1931 | 2) A direct query of currthread | |
0df8b418 | 1932 | 3) Successful execution of set thread */ |
74531fed PA |
1933 | |
1934 | static void | |
47f8a51d | 1935 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1936 | { |
47f8a51d | 1937 | rs->general_thread = currthread; |
74531fed PA |
1938 | } |
1939 | ||
89be2091 DJ |
1940 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1941 | it can simply pass through to the inferior without reporting. */ | |
1942 | ||
1943 | static void | |
94bedb42 TT |
1944 | remote_pass_signals (struct target_ops *self, |
1945 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1946 | { |
4082afcc | 1947 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1948 | { |
1949 | char *pass_packet, *p; | |
89be2091 | 1950 | int count = 0, i; |
747dc59d | 1951 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1952 | |
1953 | gdb_assert (numsigs < 256); | |
1954 | for (i = 0; i < numsigs; i++) | |
1955 | { | |
2455069d | 1956 | if (pass_signals[i]) |
89be2091 DJ |
1957 | count++; |
1958 | } | |
224c3ddb | 1959 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1960 | strcpy (pass_packet, "QPassSignals:"); |
1961 | p = pass_packet + strlen (pass_packet); | |
1962 | for (i = 0; i < numsigs; i++) | |
1963 | { | |
2455069d | 1964 | if (pass_signals[i]) |
89be2091 DJ |
1965 | { |
1966 | if (i >= 16) | |
1967 | *p++ = tohex (i >> 4); | |
1968 | *p++ = tohex (i & 15); | |
1969 | if (count) | |
1970 | *p++ = ';'; | |
1971 | else | |
1972 | break; | |
1973 | count--; | |
1974 | } | |
1975 | } | |
1976 | *p = 0; | |
747dc59d | 1977 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1978 | { |
89be2091 DJ |
1979 | putpkt (pass_packet); |
1980 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1981 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1982 | if (rs->last_pass_packet) |
1983 | xfree (rs->last_pass_packet); | |
1984 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1985 | } |
1986 | else | |
1987 | xfree (pass_packet); | |
1988 | } | |
1989 | } | |
1990 | ||
82075af2 JS |
1991 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
1992 | to report syscalls to GDB. */ | |
1993 | ||
1994 | static int | |
1995 | remote_set_syscall_catchpoint (struct target_ops *self, | |
1996 | int pid, int needed, int any_count, | |
1997 | int table_size, int *table) | |
1998 | { | |
1999 | char *catch_packet; | |
2000 | enum packet_result result; | |
2001 | int n_sysno = 0; | |
2002 | ||
2003 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2004 | { | |
2005 | /* Not supported. */ | |
2006 | return 1; | |
2007 | } | |
2008 | ||
2009 | if (needed && !any_count) | |
2010 | { | |
2011 | int i; | |
2012 | ||
2013 | /* Count how many syscalls are to be caught (table[sysno] != 0). */ | |
2014 | for (i = 0; i < table_size; i++) | |
2015 | { | |
2016 | if (table[i] != 0) | |
2017 | n_sysno++; | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | if (remote_debug) | |
2022 | { | |
2023 | fprintf_unfiltered (gdb_stdlog, | |
2024 | "remote_set_syscall_catchpoint " | |
2025 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2026 | pid, needed, any_count, n_sysno); | |
2027 | } | |
2028 | ||
2029 | if (needed) | |
2030 | { | |
2031 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2032 | characters for a sysno. If the resulting packet size is too | |
2033 | big, fallback on the non-selective packet. */ | |
2034 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
2035 | ||
c0518081 | 2036 | catch_packet = (char *) xmalloc (maxpktsz); |
82075af2 JS |
2037 | strcpy (catch_packet, "QCatchSyscalls:1"); |
2038 | if (!any_count) | |
2039 | { | |
2040 | int i; | |
2041 | char *p; | |
2042 | ||
2043 | p = catch_packet; | |
2044 | p += strlen (p); | |
2045 | ||
2046 | /* Add in catch_packet each syscall to be caught (table[i] != 0). */ | |
2047 | for (i = 0; i < table_size; i++) | |
2048 | { | |
2049 | if (table[i] != 0) | |
2050 | p += xsnprintf (p, catch_packet + maxpktsz - p, ";%x", i); | |
2051 | } | |
2052 | } | |
2053 | if (strlen (catch_packet) > get_remote_packet_size ()) | |
2054 | { | |
2055 | /* catch_packet too big. Fallback to less efficient | |
2056 | non selective mode, with GDB doing the filtering. */ | |
2057 | catch_packet[sizeof ("QCatchSyscalls:1") - 1] = 0; | |
2058 | } | |
2059 | } | |
2060 | else | |
2061 | catch_packet = xstrdup ("QCatchSyscalls:0"); | |
2062 | ||
2063 | { | |
2064 | struct cleanup *old_chain = make_cleanup (xfree, catch_packet); | |
2065 | struct remote_state *rs = get_remote_state (); | |
2066 | ||
2067 | putpkt (catch_packet); | |
2068 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2069 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); | |
2070 | do_cleanups (old_chain); | |
2071 | if (result == PACKET_OK) | |
2072 | return 0; | |
2073 | else | |
2074 | return -1; | |
2075 | } | |
2076 | } | |
2077 | ||
9b224c5e PA |
2078 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2079 | signals it should pass through to the inferior when detaching. */ | |
2080 | ||
2081 | static void | |
daf5e9b6 TT |
2082 | remote_program_signals (struct target_ops *self, |
2083 | int numsigs, unsigned char *signals) | |
9b224c5e | 2084 | { |
4082afcc | 2085 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2086 | { |
2087 | char *packet, *p; | |
2088 | int count = 0, i; | |
5e4a05c4 | 2089 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
2090 | |
2091 | gdb_assert (numsigs < 256); | |
2092 | for (i = 0; i < numsigs; i++) | |
2093 | { | |
2094 | if (signals[i]) | |
2095 | count++; | |
2096 | } | |
224c3ddb | 2097 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2098 | strcpy (packet, "QProgramSignals:"); |
2099 | p = packet + strlen (packet); | |
2100 | for (i = 0; i < numsigs; i++) | |
2101 | { | |
2102 | if (signal_pass_state (i)) | |
2103 | { | |
2104 | if (i >= 16) | |
2105 | *p++ = tohex (i >> 4); | |
2106 | *p++ = tohex (i & 15); | |
2107 | if (count) | |
2108 | *p++ = ';'; | |
2109 | else | |
2110 | break; | |
2111 | count--; | |
2112 | } | |
2113 | } | |
2114 | *p = 0; | |
5e4a05c4 TT |
2115 | if (!rs->last_program_signals_packet |
2116 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2117 | { |
9b224c5e PA |
2118 | putpkt (packet); |
2119 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2120 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2121 | xfree (rs->last_program_signals_packet); |
2122 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2123 | } |
2124 | else | |
2125 | xfree (packet); | |
2126 | } | |
2127 | } | |
2128 | ||
79d7f229 PA |
2129 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2130 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2131 | thread. If GEN is set, set the general thread, if not, then set | |
2132 | the step/continue thread. */ | |
c906108c | 2133 | static void |
79d7f229 | 2134 | set_thread (struct ptid ptid, int gen) |
c906108c | 2135 | { |
d01949b6 | 2136 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2137 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2138 | char *buf = rs->buf; |
79d7f229 | 2139 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2140 | |
79d7f229 | 2141 | if (ptid_equal (state, ptid)) |
c906108c SS |
2142 | return; |
2143 | ||
79d7f229 PA |
2144 | *buf++ = 'H'; |
2145 | *buf++ = gen ? 'g' : 'c'; | |
2146 | if (ptid_equal (ptid, magic_null_ptid)) | |
2147 | xsnprintf (buf, endbuf - buf, "0"); | |
2148 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2149 | xsnprintf (buf, endbuf - buf, "0"); | |
2150 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2151 | xsnprintf (buf, endbuf - buf, "-1"); | |
2152 | else | |
82f73884 | 2153 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2154 | putpkt (rs->buf); |
6d820c5c | 2155 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2156 | if (gen) |
47f8a51d | 2157 | rs->general_thread = ptid; |
c906108c | 2158 | else |
47f8a51d | 2159 | rs->continue_thread = ptid; |
c906108c | 2160 | } |
79d7f229 PA |
2161 | |
2162 | static void | |
2163 | set_general_thread (struct ptid ptid) | |
2164 | { | |
2165 | set_thread (ptid, 1); | |
2166 | } | |
2167 | ||
2168 | static void | |
2169 | set_continue_thread (struct ptid ptid) | |
2170 | { | |
2171 | set_thread (ptid, 0); | |
2172 | } | |
2173 | ||
3c9c4b83 PA |
2174 | /* Change the remote current process. Which thread within the process |
2175 | ends up selected isn't important, as long as it is the same process | |
2176 | as what INFERIOR_PTID points to. | |
2177 | ||
2178 | This comes from that fact that there is no explicit notion of | |
2179 | "selected process" in the protocol. The selected process for | |
2180 | general operations is the process the selected general thread | |
2181 | belongs to. */ | |
2182 | ||
2183 | static void | |
2184 | set_general_process (void) | |
2185 | { | |
2186 | struct remote_state *rs = get_remote_state (); | |
2187 | ||
2188 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2189 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2190 | return; |
2191 | ||
2192 | /* We only need to change the remote current thread if it's pointing | |
2193 | at some other process. */ | |
47f8a51d | 2194 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2195 | set_general_thread (inferior_ptid); |
2196 | } | |
2197 | ||
c906108c | 2198 | \f |
7d1a114c PA |
2199 | /* Return nonzero if this is the main thread that we made up ourselves |
2200 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2201 | |
2202 | static int | |
7d1a114c | 2203 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2204 | { |
6d820c5c | 2205 | struct remote_state *rs = get_remote_state (); |
82f73884 | 2206 | char *p, *endp; |
c906108c | 2207 | |
c0a2216e PA |
2208 | if (ptid_equal (ptid, magic_null_ptid)) |
2209 | /* The main thread is always alive. */ | |
2210 | return 1; | |
2211 | ||
ba348170 | 2212 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2213 | /* The main thread is always alive. This can happen after a |
2214 | vAttach, if the remote side doesn't support | |
2215 | multi-threading. */ | |
2216 | return 1; | |
2217 | ||
7d1a114c PA |
2218 | return 0; |
2219 | } | |
2220 | ||
2221 | /* Return nonzero if the thread PTID is still alive on the remote | |
2222 | system. */ | |
2223 | ||
2224 | static int | |
2225 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2226 | { | |
2227 | struct remote_state *rs = get_remote_state (); | |
2228 | char *p, *endp; | |
2229 | ||
2230 | /* Check if this is a thread that we made up ourselves to model | |
2231 | non-threaded targets as single-threaded. */ | |
2232 | if (remote_thread_always_alive (ops, ptid)) | |
2233 | return 1; | |
2234 | ||
82f73884 PA |
2235 | p = rs->buf; |
2236 | endp = rs->buf + get_remote_packet_size (); | |
2237 | ||
2238 | *p++ = 'T'; | |
2239 | write_ptid (p, endp, ptid); | |
2240 | ||
2e9f7625 | 2241 | putpkt (rs->buf); |
6d820c5c | 2242 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2243 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2244 | } |
2245 | ||
79efa585 SM |
2246 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2247 | The thread_info object owns the memory for the name. */ | |
2248 | ||
2249 | static const char * | |
2250 | remote_thread_name (struct target_ops *ops, struct thread_info *info) | |
2251 | { | |
2252 | if (info->priv != NULL) | |
2253 | return info->priv->name; | |
2254 | ||
2255 | return NULL; | |
2256 | } | |
2257 | ||
c906108c SS |
2258 | /* About these extended threadlist and threadinfo packets. They are |
2259 | variable length packets but, the fields within them are often fixed | |
2260 | length. They are redundent enough to send over UDP as is the | |
2261 | remote protocol in general. There is a matching unit test module | |
2262 | in libstub. */ | |
2263 | ||
23860348 | 2264 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2265 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2266 | changable. */ |
cce74817 JM |
2267 | |
2268 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2269 | Plan to fix this. */ |
cce74817 | 2270 | |
23860348 | 2271 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2272 | |
9d1f7ab2 | 2273 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2274 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2275 | |
2276 | struct gdb_ext_thread_info | |
c5aa993b | 2277 | { |
23860348 | 2278 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2279 | int active; /* Has state interesting to GDB? |
23860348 | 2280 | regs, stack. */ |
2bc416ba | 2281 | char display[256]; /* Brief state display, name, |
cedea757 | 2282 | blocked/suspended. */ |
23860348 | 2283 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2284 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2285 | whatever. */ |
c5aa993b | 2286 | }; |
cce74817 JM |
2287 | |
2288 | /* The volume of remote transfers can be limited by submitting | |
2289 | a mask containing bits specifying the desired information. | |
2290 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2291 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2292 | |
2293 | #define TAG_THREADID 1 | |
2294 | #define TAG_EXISTS 2 | |
2295 | #define TAG_DISPLAY 4 | |
2296 | #define TAG_THREADNAME 8 | |
c5aa993b | 2297 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2298 | |
23860348 | 2299 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2300 | |
a14ed312 | 2301 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2302 | |
a14ed312 | 2303 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2304 | |
a14ed312 | 2305 | static char *pack_int (char *buf, int value); |
cce74817 | 2306 | |
a14ed312 | 2307 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2308 | |
a14ed312 | 2309 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2310 | |
23860348 | 2311 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2312 | |
23860348 | 2313 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2314 | |
23860348 | 2315 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2316 | |
23860348 | 2317 | static int threadref_to_int (threadref *ref); |
cce74817 | 2318 | |
23860348 | 2319 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2320 | |
23860348 | 2321 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2322 | |
2bc416ba | 2323 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2324 | threadref *id); |
cce74817 | 2325 | |
a14ed312 | 2326 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2327 | threadref *expectedref, |
a14ed312 KB |
2328 | struct gdb_ext_thread_info |
2329 | *info); | |
cce74817 JM |
2330 | |
2331 | ||
2bc416ba | 2332 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2333 | int fieldset, /*TAG mask */ |
a14ed312 | 2334 | struct gdb_ext_thread_info *info); |
cce74817 | 2335 | |
a14ed312 KB |
2336 | static char *pack_threadlist_request (char *pkt, int startflag, |
2337 | int threadcount, | |
23860348 | 2338 | threadref *nextthread); |
cce74817 | 2339 | |
a14ed312 KB |
2340 | static int parse_threadlist_response (char *pkt, |
2341 | int result_limit, | |
23860348 | 2342 | threadref *original_echo, |
2bc416ba | 2343 | threadref *resultlist, |
23860348 | 2344 | int *doneflag); |
cce74817 | 2345 | |
a14ed312 | 2346 | static int remote_get_threadlist (int startflag, |
23860348 | 2347 | threadref *nextthread, |
a14ed312 KB |
2348 | int result_limit, |
2349 | int *done, | |
2bc416ba | 2350 | int *result_count, |
23860348 | 2351 | threadref *threadlist); |
cce74817 | 2352 | |
23860348 | 2353 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2354 | |
a14ed312 KB |
2355 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2356 | void *context, int looplimit); | |
cce74817 | 2357 | |
23860348 | 2358 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2359 | |
82f73884 PA |
2360 | |
2361 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2362 | buffer we're allowed to write to. Returns | |
2363 | BUF+CHARACTERS_WRITTEN. */ | |
2364 | ||
2365 | static char * | |
2366 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2367 | { | |
2368 | int pid, tid; | |
2369 | struct remote_state *rs = get_remote_state (); | |
2370 | ||
2371 | if (remote_multi_process_p (rs)) | |
2372 | { | |
2373 | pid = ptid_get_pid (ptid); | |
2374 | if (pid < 0) | |
2375 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2376 | else | |
2377 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2378 | } | |
ba348170 | 2379 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2380 | if (tid < 0) |
2381 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2382 | else | |
2383 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2384 | ||
2385 | return buf; | |
2386 | } | |
2387 | ||
2388 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2389 | passed the last parsed char. Returns null_ptid on error. */ | |
2390 | ||
2391 | static ptid_t | |
2392 | read_ptid (char *buf, char **obuf) | |
2393 | { | |
2394 | char *p = buf; | |
2395 | char *pp; | |
2396 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2397 | |
2398 | if (*p == 'p') | |
2399 | { | |
2400 | /* Multi-process ptid. */ | |
2401 | pp = unpack_varlen_hex (p + 1, &pid); | |
2402 | if (*pp != '.') | |
b37520b6 | 2403 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2404 | |
2405 | p = pp; | |
2406 | pp = unpack_varlen_hex (p + 1, &tid); | |
2407 | if (obuf) | |
2408 | *obuf = pp; | |
ba348170 | 2409 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2410 | } |
2411 | ||
2412 | /* No multi-process. Just a tid. */ | |
2413 | pp = unpack_varlen_hex (p, &tid); | |
2414 | ||
c9f35b34 KB |
2415 | /* Return null_ptid when no thread id is found. */ |
2416 | if (p == pp) | |
2417 | { | |
2418 | if (obuf) | |
2419 | *obuf = pp; | |
2420 | return null_ptid; | |
2421 | } | |
2422 | ||
82f73884 | 2423 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2424 | what's in inferior_ptid, unless it's null at this point. If so, |
2425 | then since there's no way to know the pid of the reported | |
2426 | threads, use the magic number. */ | |
2427 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2428 | pid = ptid_get_pid (magic_null_ptid); | |
2429 | else | |
2430 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2431 | |
2432 | if (obuf) | |
2433 | *obuf = pp; | |
ba348170 | 2434 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2435 | } |
2436 | ||
c906108c | 2437 | static int |
fba45db2 | 2438 | stubhex (int ch) |
c906108c SS |
2439 | { |
2440 | if (ch >= 'a' && ch <= 'f') | |
2441 | return ch - 'a' + 10; | |
2442 | if (ch >= '0' && ch <= '9') | |
2443 | return ch - '0'; | |
2444 | if (ch >= 'A' && ch <= 'F') | |
2445 | return ch - 'A' + 10; | |
2446 | return -1; | |
2447 | } | |
2448 | ||
2449 | static int | |
fba45db2 | 2450 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2451 | { |
2452 | int nibble; | |
2453 | int retval = 0; | |
2454 | ||
2455 | while (fieldlength) | |
2456 | { | |
2457 | nibble = stubhex (*buff++); | |
2458 | retval |= nibble; | |
2459 | fieldlength--; | |
2460 | if (fieldlength) | |
2461 | retval = retval << 4; | |
2462 | } | |
2463 | return retval; | |
2464 | } | |
2465 | ||
c906108c | 2466 | static char * |
fba45db2 | 2467 | unpack_nibble (char *buf, int *val) |
c906108c | 2468 | { |
b7589f7d | 2469 | *val = fromhex (*buf++); |
c906108c SS |
2470 | return buf; |
2471 | } | |
2472 | ||
c906108c | 2473 | static char * |
fba45db2 | 2474 | unpack_byte (char *buf, int *value) |
c906108c SS |
2475 | { |
2476 | *value = stub_unpack_int (buf, 2); | |
2477 | return buf + 2; | |
2478 | } | |
2479 | ||
2480 | static char * | |
fba45db2 | 2481 | pack_int (char *buf, int value) |
c906108c SS |
2482 | { |
2483 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2484 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2485 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2486 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2487 | return buf; | |
2488 | } | |
2489 | ||
2490 | static char * | |
fba45db2 | 2491 | unpack_int (char *buf, int *value) |
c906108c SS |
2492 | { |
2493 | *value = stub_unpack_int (buf, 8); | |
2494 | return buf + 8; | |
2495 | } | |
2496 | ||
23860348 | 2497 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2498 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2499 | |
2500 | static char * | |
fba45db2 | 2501 | pack_string (char *pkt, char *string) |
c906108c SS |
2502 | { |
2503 | char ch; | |
2504 | int len; | |
2505 | ||
2506 | len = strlen (string); | |
2507 | if (len > 200) | |
23860348 | 2508 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2509 | pkt = pack_hex_byte (pkt, len); |
2510 | while (len-- > 0) | |
2511 | { | |
2512 | ch = *string++; | |
2513 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2514 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2515 | *pkt++ = ch; |
2516 | } | |
2517 | return pkt; | |
2518 | } | |
2519 | #endif /* 0 (unused) */ | |
2520 | ||
2521 | static char * | |
fba45db2 | 2522 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2523 | { |
2524 | while (length--) | |
2525 | *dest++ = *src++; | |
2526 | *dest = '\0'; | |
2527 | return src; | |
2528 | } | |
2529 | ||
2530 | static char * | |
fba45db2 | 2531 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2532 | { |
2533 | char *limit; | |
2534 | unsigned char *altid; | |
2535 | ||
2536 | altid = (unsigned char *) id; | |
2537 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2538 | while (pkt < limit) | |
2539 | pkt = pack_hex_byte (pkt, *altid++); | |
2540 | return pkt; | |
2541 | } | |
2542 | ||
2543 | ||
2544 | static char * | |
fba45db2 | 2545 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2546 | { |
2547 | char *altref; | |
2548 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2549 | int x, y; | |
2550 | ||
2551 | altref = (char *) id; | |
2552 | ||
2553 | while (inbuf < limit) | |
2554 | { | |
2555 | x = stubhex (*inbuf++); | |
2556 | y = stubhex (*inbuf++); | |
2557 | *altref++ = (x << 4) | y; | |
2558 | } | |
2559 | return inbuf; | |
2560 | } | |
2561 | ||
2562 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2563 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2564 | to use 64bit thread references internally. This is an adapter |
2565 | function. */ | |
2566 | ||
2567 | void | |
fba45db2 | 2568 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2569 | { |
2570 | unsigned char *scan; | |
2571 | ||
2572 | scan = (unsigned char *) id; | |
2573 | { | |
2574 | int i = 4; | |
2575 | while (i--) | |
2576 | *scan++ = 0; | |
2577 | } | |
2578 | *scan++ = (value >> 24) & 0xff; | |
2579 | *scan++ = (value >> 16) & 0xff; | |
2580 | *scan++ = (value >> 8) & 0xff; | |
2581 | *scan++ = (value & 0xff); | |
2582 | } | |
2583 | ||
2584 | static int | |
fba45db2 | 2585 | threadref_to_int (threadref *ref) |
c906108c SS |
2586 | { |
2587 | int i, value = 0; | |
2588 | unsigned char *scan; | |
2589 | ||
cfd77fa1 | 2590 | scan = *ref; |
c906108c SS |
2591 | scan += 4; |
2592 | i = 4; | |
2593 | while (i-- > 0) | |
2594 | value = (value << 8) | ((*scan++) & 0xff); | |
2595 | return value; | |
2596 | } | |
2597 | ||
2598 | static void | |
fba45db2 | 2599 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2600 | { |
2601 | int i; | |
2602 | unsigned char *csrc, *cdest; | |
2603 | ||
2604 | csrc = (unsigned char *) src; | |
2605 | cdest = (unsigned char *) dest; | |
2606 | i = 8; | |
2607 | while (i--) | |
2608 | *cdest++ = *csrc++; | |
2609 | } | |
2610 | ||
2611 | static int | |
fba45db2 | 2612 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2613 | { |
23860348 | 2614 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2615 | #if 0 |
2616 | unsigned char *srcp, *destp; | |
2617 | int i, result; | |
2618 | srcp = (char *) src; | |
2619 | destp = (char *) dest; | |
2620 | ||
2621 | result = 1; | |
2622 | while (i-- > 0) | |
2623 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2624 | return result; | |
2625 | #endif | |
2626 | return 1; | |
2627 | } | |
2628 | ||
2629 | /* | |
c5aa993b JM |
2630 | threadid:1, # always request threadid |
2631 | context_exists:2, | |
2632 | display:4, | |
2633 | unique_name:8, | |
2634 | more_display:16 | |
2635 | */ | |
c906108c SS |
2636 | |
2637 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2638 | ||
2639 | static char * | |
fba45db2 | 2640 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2641 | { |
23860348 MS |
2642 | *pkt++ = 'q'; /* Info Query */ |
2643 | *pkt++ = 'P'; /* process or thread info */ | |
2644 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2645 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2646 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2647 | return pkt; |
2648 | } | |
2649 | ||
23860348 | 2650 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2651 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2652 | add more fields as time goes by. */ |
c906108c | 2653 | |
23860348 | 2654 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2655 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2656 | fetch registers and its stack? */ |
c5aa993b | 2657 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2658 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2659 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2660 | the process. */ |
c906108c SS |
2661 | |
2662 | static int | |
fba45db2 KB |
2663 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2664 | struct gdb_ext_thread_info *info) | |
c906108c | 2665 | { |
d01949b6 | 2666 | struct remote_state *rs = get_remote_state (); |
c906108c | 2667 | int mask, length; |
cfd77fa1 | 2668 | int tag; |
c906108c | 2669 | threadref ref; |
6d820c5c | 2670 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2671 | int retval = 1; |
2672 | ||
23860348 | 2673 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2674 | info->active = 0; |
2675 | info->display[0] = '\0'; | |
2676 | info->shortname[0] = '\0'; | |
2677 | info->more_display[0] = '\0'; | |
2678 | ||
23860348 MS |
2679 | /* Assume the characters indicating the packet type have been |
2680 | stripped. */ | |
c906108c SS |
2681 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2682 | pkt = unpack_threadid (pkt, &ref); | |
2683 | ||
2684 | if (mask == 0) | |
8a3fe4f8 | 2685 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2686 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2687 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2688 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2689 | return 0; |
2690 | } | |
2691 | copy_threadref (&info->threadid, &ref); | |
2692 | ||
23860348 | 2693 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2694 | |
23860348 MS |
2695 | /* Packets are terminated with nulls. */ |
2696 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2697 | { |
2698 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2699 | pkt = unpack_byte (pkt, &length); /* length */ |
2700 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2701 | { |
8a3fe4f8 | 2702 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2703 | retval = 0; |
2704 | break; | |
2705 | } | |
2706 | if (tag == TAG_THREADID) | |
2707 | { | |
2708 | if (length != 16) | |
2709 | { | |
8a3fe4f8 | 2710 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2711 | retval = 0; |
2712 | break; | |
2713 | } | |
2714 | pkt = unpack_threadid (pkt, &ref); | |
2715 | mask = mask & ~TAG_THREADID; | |
2716 | continue; | |
2717 | } | |
2718 | if (tag == TAG_EXISTS) | |
2719 | { | |
2720 | info->active = stub_unpack_int (pkt, length); | |
2721 | pkt += length; | |
2722 | mask = mask & ~(TAG_EXISTS); | |
2723 | if (length > 8) | |
2724 | { | |
8a3fe4f8 | 2725 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2726 | retval = 0; |
2727 | break; | |
2728 | } | |
2729 | continue; | |
2730 | } | |
2731 | if (tag == TAG_THREADNAME) | |
2732 | { | |
2733 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2734 | mask = mask & ~TAG_THREADNAME; | |
2735 | continue; | |
2736 | } | |
2737 | if (tag == TAG_DISPLAY) | |
2738 | { | |
2739 | pkt = unpack_string (pkt, &info->display[0], length); | |
2740 | mask = mask & ~TAG_DISPLAY; | |
2741 | continue; | |
2742 | } | |
2743 | if (tag == TAG_MOREDISPLAY) | |
2744 | { | |
2745 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2746 | mask = mask & ~TAG_MOREDISPLAY; | |
2747 | continue; | |
2748 | } | |
8a3fe4f8 | 2749 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2750 | break; /* Not a tag we know about. */ |
c906108c SS |
2751 | } |
2752 | return retval; | |
2753 | } | |
2754 | ||
2755 | static int | |
fba45db2 KB |
2756 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2757 | struct gdb_ext_thread_info *info) | |
c906108c | 2758 | { |
d01949b6 | 2759 | struct remote_state *rs = get_remote_state (); |
c906108c | 2760 | int result; |
c906108c | 2761 | |
2e9f7625 DJ |
2762 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2763 | putpkt (rs->buf); | |
6d820c5c | 2764 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2765 | |
2766 | if (rs->buf[0] == '\0') | |
2767 | return 0; | |
2768 | ||
2e9f7625 | 2769 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2770 | threadid, info); |
c906108c SS |
2771 | return result; |
2772 | } | |
2773 | ||
c906108c SS |
2774 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2775 | ||
2776 | static char * | |
fba45db2 KB |
2777 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2778 | threadref *nextthread) | |
c906108c SS |
2779 | { |
2780 | *pkt++ = 'q'; /* info query packet */ | |
2781 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2782 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2783 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2784 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2785 | *pkt = '\0'; | |
2786 | return pkt; | |
2787 | } | |
2788 | ||
2789 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2790 | ||
2791 | static int | |
fba45db2 KB |
2792 | parse_threadlist_response (char *pkt, int result_limit, |
2793 | threadref *original_echo, threadref *resultlist, | |
2794 | int *doneflag) | |
c906108c | 2795 | { |
d01949b6 | 2796 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2797 | char *limit; |
2798 | int count, resultcount, done; | |
2799 | ||
2800 | resultcount = 0; | |
2801 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2802 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2803 | /* done parse past here */ |
c906108c SS |
2804 | pkt = unpack_byte (pkt, &count); /* count field */ |
2805 | pkt = unpack_nibble (pkt, &done); | |
2806 | /* The first threadid is the argument threadid. */ | |
2807 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2808 | while ((count-- > 0) && (pkt < limit)) | |
2809 | { | |
2810 | pkt = unpack_threadid (pkt, resultlist++); | |
2811 | if (resultcount++ >= result_limit) | |
2812 | break; | |
2813 | } | |
2814 | if (doneflag) | |
2815 | *doneflag = done; | |
2816 | return resultcount; | |
2817 | } | |
2818 | ||
6dc54d91 PA |
2819 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2820 | qL packet is not supported, 0 on error and 1 on success. */ | |
2821 | ||
c906108c | 2822 | static int |
fba45db2 KB |
2823 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2824 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2825 | { |
d01949b6 | 2826 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2827 | int result = 1; |
2828 | ||
23860348 | 2829 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2830 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2831 | >= get_remote_packet_size ()) | |
ea9c271d | 2832 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2833 | |
6d820c5c DJ |
2834 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2835 | putpkt (rs->buf); | |
2836 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2837 | if (*rs->buf == '\0') |
6dc54d91 PA |
2838 | { |
2839 | /* Packet not supported. */ | |
2840 | return -1; | |
2841 | } | |
2842 | ||
2843 | *result_count = | |
2844 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2845 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2846 | |
0d031856 | 2847 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2848 | { |
23860348 MS |
2849 | /* FIXME: This is a good reason to drop the packet. */ |
2850 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2851 | /* Possabilities : |
2852 | retransmit immediatly - race conditions | |
2853 | retransmit after timeout - yes | |
2854 | exit | |
2855 | wait for packet, then exit | |
2856 | */ | |
8a3fe4f8 | 2857 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2858 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2859 | } |
2860 | if (*result_count <= 0) | |
2861 | { | |
2862 | if (*done != 1) | |
2863 | { | |
8a3fe4f8 | 2864 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2865 | result = 0; |
2866 | } | |
2867 | return result; /* break; */ | |
2868 | } | |
2869 | if (*result_count > result_limit) | |
2870 | { | |
2871 | *result_count = 0; | |
8a3fe4f8 | 2872 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2873 | return 0; |
2874 | } | |
2875 | return result; | |
2876 | } | |
2877 | ||
6dc54d91 PA |
2878 | /* Fetch the list of remote threads, with the qL packet, and call |
2879 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2880 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2881 | STEPFUNCTION returns false. If the packet is not supported, | |
2882 | returns -1. */ | |
c906108c | 2883 | |
c906108c | 2884 | static int |
fba45db2 KB |
2885 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2886 | int looplimit) | |
c906108c | 2887 | { |
0d031856 | 2888 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2889 | int done, i, result_count; |
2890 | int startflag = 1; | |
2891 | int result = 1; | |
2892 | int loopcount = 0; | |
c906108c SS |
2893 | |
2894 | done = 0; | |
2895 | while (!done) | |
2896 | { | |
2897 | if (loopcount++ > looplimit) | |
2898 | { | |
2899 | result = 0; | |
8a3fe4f8 | 2900 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2901 | break; |
2902 | } | |
6dc54d91 PA |
2903 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2904 | MAXTHREADLISTRESULTS, | |
2905 | &done, &result_count, | |
2906 | rs->resultthreadlist); | |
2907 | if (result <= 0) | |
2908 | break; | |
23860348 | 2909 | /* Clear for later iterations. */ |
c906108c SS |
2910 | startflag = 0; |
2911 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2912 | if (result_count >= 1) | |
0d031856 TT |
2913 | copy_threadref (&rs->nextthread, |
2914 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2915 | i = 0; |
2916 | while (result_count--) | |
6dc54d91 PA |
2917 | { |
2918 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2919 | { | |
2920 | result = 0; | |
2921 | break; | |
2922 | } | |
2923 | } | |
c906108c SS |
2924 | } |
2925 | return result; | |
2926 | } | |
2927 | ||
6dc54d91 PA |
2928 | /* A thread found on the remote target. */ |
2929 | ||
2930 | typedef struct thread_item | |
2931 | { | |
2932 | /* The thread's PTID. */ | |
2933 | ptid_t ptid; | |
2934 | ||
2935 | /* The thread's extra info. May be NULL. */ | |
2936 | char *extra; | |
2937 | ||
79efa585 SM |
2938 | /* The thread's name. May be NULL. */ |
2939 | char *name; | |
2940 | ||
6dc54d91 PA |
2941 | /* The core the thread was running on. -1 if not known. */ |
2942 | int core; | |
2943 | } thread_item_t; | |
2944 | DEF_VEC_O(thread_item_t); | |
2945 | ||
2946 | /* Context passed around to the various methods listing remote | |
2947 | threads. As new threads are found, they're added to the ITEMS | |
2948 | vector. */ | |
2949 | ||
2950 | struct threads_listing_context | |
2951 | { | |
2952 | /* The threads found on the remote target. */ | |
2953 | VEC (thread_item_t) *items; | |
2954 | }; | |
2955 | ||
80134cf5 PA |
2956 | /* Discard the contents of the constructed thread listing context. */ |
2957 | ||
2958 | static void | |
2959 | clear_threads_listing_context (void *p) | |
2960 | { | |
19ba03f4 SM |
2961 | struct threads_listing_context *context |
2962 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
2963 | int i; |
2964 | struct thread_item *item; | |
2965 | ||
2966 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
79efa585 SM |
2967 | { |
2968 | xfree (item->extra); | |
2969 | xfree (item->name); | |
2970 | } | |
80134cf5 PA |
2971 | |
2972 | VEC_free (thread_item_t, context->items); | |
2973 | } | |
2974 | ||
cbb8991c DB |
2975 | /* Remove the thread specified as the related_pid field of WS |
2976 | from the CONTEXT list. */ | |
2977 | ||
2978 | static void | |
2979 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2980 | struct threads_listing_context *context) | |
2981 | { | |
2982 | struct thread_item *item; | |
2983 | int i; | |
2984 | ptid_t child_ptid = ws->value.related_pid; | |
2985 | ||
2986 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2987 | { | |
2988 | if (ptid_equal (item->ptid, child_ptid)) | |
2989 | { | |
2990 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2991 | break; | |
2992 | } | |
2993 | } | |
2994 | } | |
2995 | ||
c906108c | 2996 | static int |
6dc54d91 | 2997 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2998 | { |
19ba03f4 SM |
2999 | struct threads_listing_context *context |
3000 | = (struct threads_listing_context *) data; | |
6dc54d91 | 3001 | struct thread_item item; |
79d7f229 | 3002 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 3003 | |
6dc54d91 PA |
3004 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
3005 | item.core = -1; | |
2e3b657e | 3006 | item.name = NULL; |
6dc54d91 PA |
3007 | item.extra = NULL; |
3008 | ||
3009 | VEC_safe_push (thread_item_t, context->items, &item); | |
3010 | ||
c906108c SS |
3011 | return 1; /* continue iterator */ |
3012 | } | |
3013 | ||
3014 | #define CRAZY_MAX_THREADS 1000 | |
3015 | ||
39f77062 KB |
3016 | static ptid_t |
3017 | remote_current_thread (ptid_t oldpid) | |
c906108c | 3018 | { |
d01949b6 | 3019 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3020 | |
3021 | putpkt ("qC"); | |
6d820c5c | 3022 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3023 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
3024 | { |
3025 | char *obuf; | |
3026 | ptid_t result; | |
3027 | ||
3028 | result = read_ptid (&rs->buf[2], &obuf); | |
3029 | if (*obuf != '\0' && remote_debug) | |
3030 | fprintf_unfiltered (gdb_stdlog, | |
3031 | "warning: garbage in qC reply\n"); | |
3032 | ||
3033 | return result; | |
3034 | } | |
c906108c SS |
3035 | else |
3036 | return oldpid; | |
3037 | } | |
3038 | ||
6dc54d91 | 3039 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3040 | |
6dc54d91 PA |
3041 | static int |
3042 | remote_get_threads_with_ql (struct target_ops *ops, | |
3043 | struct threads_listing_context *context) | |
c906108c | 3044 | { |
6dc54d91 PA |
3045 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3046 | CRAZY_MAX_THREADS) >= 0) | |
3047 | return 1; | |
3048 | ||
3049 | return 0; | |
c906108c SS |
3050 | } |
3051 | ||
dc146f7c VP |
3052 | #if defined(HAVE_LIBEXPAT) |
3053 | ||
dc146f7c VP |
3054 | static void |
3055 | start_thread (struct gdb_xml_parser *parser, | |
3056 | const struct gdb_xml_element *element, | |
3057 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
3058 | { | |
19ba03f4 SM |
3059 | struct threads_listing_context *data |
3060 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3061 | |
3062 | struct thread_item item; | |
3063 | char *id; | |
3d2c1d41 | 3064 | struct gdb_xml_value *attr; |
dc146f7c | 3065 | |
19ba03f4 | 3066 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
3067 | item.ptid = read_ptid (id, NULL); |
3068 | ||
3d2c1d41 PA |
3069 | attr = xml_find_attribute (attributes, "core"); |
3070 | if (attr != NULL) | |
3071 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
3072 | else |
3073 | item.core = -1; | |
3074 | ||
79efa585 | 3075 | attr = xml_find_attribute (attributes, "name"); |
e1961661 | 3076 | item.name = attr != NULL ? xstrdup ((const char *) attr->value) : NULL; |
79efa585 | 3077 | |
dc146f7c VP |
3078 | item.extra = 0; |
3079 | ||
3080 | VEC_safe_push (thread_item_t, data->items, &item); | |
3081 | } | |
3082 | ||
3083 | static void | |
3084 | end_thread (struct gdb_xml_parser *parser, | |
3085 | const struct gdb_xml_element *element, | |
3086 | void *user_data, const char *body_text) | |
3087 | { | |
19ba03f4 SM |
3088 | struct threads_listing_context *data |
3089 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
3090 | |
3091 | if (body_text && *body_text) | |
2ae2a0b7 | 3092 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
3093 | } |
3094 | ||
3095 | const struct gdb_xml_attribute thread_attributes[] = { | |
3096 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3097 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3098 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3099 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3100 | }; | |
3101 | ||
3102 | const struct gdb_xml_element thread_children[] = { | |
3103 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3104 | }; | |
3105 | ||
3106 | const struct gdb_xml_element threads_children[] = { | |
3107 | { "thread", thread_attributes, thread_children, | |
3108 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3109 | start_thread, end_thread }, | |
3110 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3111 | }; | |
3112 | ||
3113 | const struct gdb_xml_element threads_elements[] = { | |
3114 | { "threads", NULL, threads_children, | |
3115 | GDB_XML_EF_NONE, NULL, NULL }, | |
3116 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3117 | }; | |
3118 | ||
3119 | #endif | |
3120 | ||
6dc54d91 | 3121 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3122 | |
6dc54d91 PA |
3123 | static int |
3124 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3125 | struct threads_listing_context *context) | |
0f71a2f6 | 3126 | { |
dc146f7c | 3127 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3128 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3129 | { |
6dc54d91 | 3130 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3131 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3132 | |
6dc54d91 | 3133 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3134 | { |
6dc54d91 PA |
3135 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3136 | threads_elements, xml, context); | |
dc146f7c VP |
3137 | } |
3138 | ||
3139 | do_cleanups (back_to); | |
6dc54d91 | 3140 | return 1; |
dc146f7c VP |
3141 | } |
3142 | #endif | |
3143 | ||
6dc54d91 PA |
3144 | return 0; |
3145 | } | |
3146 | ||
3147 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3148 | ||
3149 | static int | |
3150 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3151 | struct threads_listing_context *context) | |
3152 | { | |
3153 | struct remote_state *rs = get_remote_state (); | |
3154 | ||
b80fafe3 | 3155 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3156 | { |
6dc54d91 PA |
3157 | char *bufp; |
3158 | ||
9d1f7ab2 | 3159 | putpkt ("qfThreadInfo"); |
6d820c5c | 3160 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3161 | bufp = rs->buf; |
9d1f7ab2 | 3162 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3163 | { |
9d1f7ab2 MS |
3164 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3165 | { | |
3166 | do | |
3167 | { | |
6dc54d91 PA |
3168 | struct thread_item item; |
3169 | ||
3170 | item.ptid = read_ptid (bufp, &bufp); | |
3171 | item.core = -1; | |
2e3b657e | 3172 | item.name = NULL; |
6dc54d91 PA |
3173 | item.extra = NULL; |
3174 | ||
3175 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3176 | } |
3177 | while (*bufp++ == ','); /* comma-separated list */ | |
3178 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3179 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3180 | bufp = rs->buf; |
9d1f7ab2 | 3181 | } |
6dc54d91 PA |
3182 | return 1; |
3183 | } | |
3184 | else | |
3185 | { | |
3186 | /* Packet not recognized. */ | |
3187 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3188 | } |
3189 | } | |
3190 | ||
6dc54d91 PA |
3191 | return 0; |
3192 | } | |
3193 | ||
e8032dde | 3194 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3195 | targets. */ |
3196 | ||
3197 | static void | |
e8032dde | 3198 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
3199 | { |
3200 | struct remote_state *rs = get_remote_state (); | |
3201 | struct threads_listing_context context; | |
3202 | struct cleanup *old_chain; | |
ab970af1 | 3203 | int got_list = 0; |
e8032dde | 3204 | |
6dc54d91 PA |
3205 | context.items = NULL; |
3206 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3207 | ||
3208 | /* We have a few different mechanisms to fetch the thread list. Try | |
3209 | them all, starting with the most preferred one first, falling | |
3210 | back to older methods. */ | |
3211 | if (remote_get_threads_with_qxfer (ops, &context) | |
3212 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3213 | || remote_get_threads_with_ql (ops, &context)) | |
3214 | { | |
3215 | int i; | |
3216 | struct thread_item *item; | |
ab970af1 PA |
3217 | struct thread_info *tp, *tmp; |
3218 | ||
3219 | got_list = 1; | |
3220 | ||
7d1a114c PA |
3221 | if (VEC_empty (thread_item_t, context.items) |
3222 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3223 | { | |
3224 | /* Some targets don't really support threads, but still | |
3225 | reply an (empty) thread list in response to the thread | |
3226 | listing packets, instead of replying "packet not | |
3227 | supported". Exit early so we don't delete the main | |
3228 | thread. */ | |
3229 | do_cleanups (old_chain); | |
3230 | return; | |
3231 | } | |
3232 | ||
ab970af1 PA |
3233 | /* CONTEXT now holds the current thread list on the remote |
3234 | target end. Delete GDB-side threads no longer found on the | |
3235 | target. */ | |
8a06aea7 | 3236 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3237 | { |
ab970af1 PA |
3238 | for (i = 0; |
3239 | VEC_iterate (thread_item_t, context.items, i, item); | |
3240 | ++i) | |
3241 | { | |
3242 | if (ptid_equal (item->ptid, tp->ptid)) | |
3243 | break; | |
3244 | } | |
3245 | ||
3246 | if (i == VEC_length (thread_item_t, context.items)) | |
3247 | { | |
3248 | /* Not found. */ | |
3249 | delete_thread (tp->ptid); | |
3250 | } | |
cbb8991c DB |
3251 | } |
3252 | ||
3253 | /* Remove any unreported fork child threads from CONTEXT so | |
3254 | that we don't interfere with follow fork, which is where | |
3255 | creation of such threads is handled. */ | |
3256 | remove_new_fork_children (&context); | |
74531fed | 3257 | |
ab970af1 | 3258 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3259 | for (i = 0; |
3260 | VEC_iterate (thread_item_t, context.items, i, item); | |
3261 | ++i) | |
3262 | { | |
3263 | if (!ptid_equal (item->ptid, null_ptid)) | |
3264 | { | |
3265 | struct private_thread_info *info; | |
3266 | /* In non-stop mode, we assume new found threads are | |
3267 | running until proven otherwise with a stop reply. In | |
3268 | all-stop, we can only get here if all threads are | |
3269 | stopped. */ | |
6efcd9a8 | 3270 | int running = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 PA |
3271 | |
3272 | remote_notice_new_inferior (item->ptid, running); | |
3273 | ||
3274 | info = demand_private_info (item->ptid); | |
3275 | info->core = item->core; | |
3276 | info->extra = item->extra; | |
3277 | item->extra = NULL; | |
79efa585 SM |
3278 | info->name = item->name; |
3279 | item->name = NULL; | |
6dc54d91 PA |
3280 | } |
3281 | } | |
3282 | } | |
3283 | ||
ab970af1 PA |
3284 | if (!got_list) |
3285 | { | |
3286 | /* If no thread listing method is supported, then query whether | |
3287 | each known thread is alive, one by one, with the T packet. | |
3288 | If the target doesn't support threads at all, then this is a | |
3289 | no-op. See remote_thread_alive. */ | |
3290 | prune_threads (); | |
3291 | } | |
3292 | ||
6dc54d91 | 3293 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3294 | } |
3295 | ||
802188a7 | 3296 | /* |
9d1f7ab2 MS |
3297 | * Collect a descriptive string about the given thread. |
3298 | * The target may say anything it wants to about the thread | |
3299 | * (typically info about its blocked / runnable state, name, etc.). | |
3300 | * This string will appear in the info threads display. | |
802188a7 | 3301 | * |
9d1f7ab2 MS |
3302 | * Optional: targets are not required to implement this function. |
3303 | */ | |
3304 | ||
3305 | static char * | |
c15906d8 | 3306 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3307 | { |
d01949b6 | 3308 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3309 | int result; |
3310 | int set; | |
3311 | threadref id; | |
3312 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3313 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3314 | int n = 0; /* position in display_buf */ |
3315 | ||
5d93a237 | 3316 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3317 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3318 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3319 | |
60e569b9 | 3320 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3321 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3322 | /* This is the main thread which was added by GDB. The remote |
3323 | server doesn't know about it. */ | |
3324 | return NULL; | |
3325 | ||
4082afcc | 3326 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3327 | { |
3328 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3329 | |
fe978cb0 PA |
3330 | if (info && info->priv) |
3331 | return info->priv->extra; | |
dc146f7c VP |
3332 | else |
3333 | return NULL; | |
3334 | } | |
3335 | ||
b80fafe3 | 3336 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3337 | { |
82f73884 PA |
3338 | char *b = rs->buf; |
3339 | char *endb = rs->buf + get_remote_packet_size (); | |
3340 | ||
3341 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3342 | b += strlen (b); | |
3343 | write_ptid (b, endb, tp->ptid); | |
3344 | ||
2e9f7625 | 3345 | putpkt (rs->buf); |
6d820c5c | 3346 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3347 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3348 | { |
2e9f7625 DJ |
3349 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3350 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3351 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3352 | return display_buf; |
3353 | } | |
0f71a2f6 | 3354 | } |
9d1f7ab2 MS |
3355 | |
3356 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3357 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3358 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3359 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3360 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3361 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3362 | if (threadinfo.active) | |
0f71a2f6 | 3363 | { |
9d1f7ab2 | 3364 | if (*threadinfo.shortname) |
2bc416ba | 3365 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3366 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3367 | if (*threadinfo.display) |
2bc416ba | 3368 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3369 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3370 | if (*threadinfo.more_display) |
2bc416ba | 3371 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3372 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3373 | |
3374 | if (n > 0) | |
c5aa993b | 3375 | { |
23860348 | 3376 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3377 | if (',' == display_buf[n-1]) |
3378 | display_buf[n-1] = ' '; | |
3379 | return display_buf; | |
c5aa993b | 3380 | } |
0f71a2f6 | 3381 | } |
9d1f7ab2 | 3382 | return NULL; |
0f71a2f6 | 3383 | } |
c906108c | 3384 | \f |
c5aa993b | 3385 | |
0fb4aa4b | 3386 | static int |
61fc905d | 3387 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3388 | struct static_tracepoint_marker *marker) |
3389 | { | |
3390 | struct remote_state *rs = get_remote_state (); | |
3391 | char *p = rs->buf; | |
3392 | ||
bba74b36 | 3393 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3394 | p += strlen (p); |
3395 | p += hexnumstr (p, addr); | |
3396 | putpkt (rs->buf); | |
3397 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3398 | p = rs->buf; | |
3399 | ||
3400 | if (*p == 'E') | |
3401 | error (_("Remote failure reply: %s"), p); | |
3402 | ||
3403 | if (*p++ == 'm') | |
3404 | { | |
3405 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3406 | return 1; | |
3407 | } | |
3408 | ||
3409 | return 0; | |
3410 | } | |
3411 | ||
0fb4aa4b | 3412 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3413 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3414 | const char *strid) | |
0fb4aa4b PA |
3415 | { |
3416 | struct remote_state *rs = get_remote_state (); | |
3417 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3418 | struct static_tracepoint_marker *marker = NULL; | |
3419 | struct cleanup *old_chain; | |
3420 | char *p; | |
3421 | ||
3422 | /* Ask for a first packet of static tracepoint marker | |
3423 | definition. */ | |
3424 | putpkt ("qTfSTM"); | |
3425 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3426 | p = rs->buf; | |
3427 | if (*p == 'E') | |
3428 | error (_("Remote failure reply: %s"), p); | |
3429 | ||
3430 | old_chain = make_cleanup (free_current_marker, &marker); | |
3431 | ||
3432 | while (*p++ == 'm') | |
3433 | { | |
3434 | if (marker == NULL) | |
3435 | marker = XCNEW (struct static_tracepoint_marker); | |
3436 | ||
3437 | do | |
3438 | { | |
3439 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3440 | ||
3441 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3442 | { | |
3443 | VEC_safe_push (static_tracepoint_marker_p, | |
3444 | markers, marker); | |
3445 | marker = NULL; | |
3446 | } | |
3447 | else | |
3448 | { | |
3449 | release_static_tracepoint_marker (marker); | |
3450 | memset (marker, 0, sizeof (*marker)); | |
3451 | } | |
3452 | } | |
3453 | while (*p++ == ','); /* comma-separated list */ | |
3454 | /* Ask for another packet of static tracepoint definition. */ | |
3455 | putpkt ("qTsSTM"); | |
3456 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3457 | p = rs->buf; | |
3458 | } | |
3459 | ||
3460 | do_cleanups (old_chain); | |
3461 | return markers; | |
3462 | } | |
3463 | ||
3464 | \f | |
10760264 JB |
3465 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3466 | ||
3467 | static ptid_t | |
1e6b91a4 | 3468 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3469 | { |
ba348170 | 3470 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3471 | } |
3472 | \f | |
3473 | ||
24b06219 | 3474 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3475 | |
3476 | static void | |
fba45db2 | 3477 | extended_remote_restart (void) |
c906108c | 3478 | { |
d01949b6 | 3479 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3480 | |
3481 | /* Send the restart command; for reasons I don't understand the | |
3482 | remote side really expects a number after the "R". */ | |
ea9c271d | 3483 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3484 | putpkt (rs->buf); |
c906108c | 3485 | |
ad9a8f3f | 3486 | remote_fileio_reset (); |
c906108c SS |
3487 | } |
3488 | \f | |
3489 | /* Clean up connection to a remote debugger. */ | |
3490 | ||
c906108c | 3491 | static void |
de90e03d | 3492 | remote_close (struct target_ops *self) |
c906108c | 3493 | { |
5d93a237 TT |
3494 | struct remote_state *rs = get_remote_state (); |
3495 | ||
3496 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3497 | return; /* already closed */ |
3498 | ||
3499 | /* Make sure we leave stdin registered in the event loop, and we | |
3500 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3501 | remote_terminal_ours (self); |
ce5ce7ed | 3502 | |
5d93a237 TT |
3503 | serial_close (rs->remote_desc); |
3504 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3505 | |
3506 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3507 | of all the inferiors and their threads we were controlling. |
3508 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3509 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3510 | inferior_ptid = null_ptid; |
f67fd822 | 3511 | discard_all_inferiors (); |
ce5ce7ed | 3512 | |
f48ff2a7 YQ |
3513 | /* We are closing the remote target, so we should discard |
3514 | everything of this target. */ | |
bcc75809 | 3515 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3516 | |
3517 | if (remote_async_inferior_event_token) | |
3518 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3519 | |
5965e028 | 3520 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3521 | |
3522 | trace_reset_local_state (); | |
c906108c SS |
3523 | } |
3524 | ||
23860348 | 3525 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3526 | |
3527 | static void | |
fba45db2 | 3528 | get_offsets (void) |
c906108c | 3529 | { |
d01949b6 | 3530 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3531 | char *buf; |
085dd6e6 | 3532 | char *ptr; |
31d99776 DJ |
3533 | int lose, num_segments = 0, do_sections, do_segments; |
3534 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3535 | struct section_offsets *offs; |
31d99776 DJ |
3536 | struct symfile_segment_data *data; |
3537 | ||
3538 | if (symfile_objfile == NULL) | |
3539 | return; | |
c906108c SS |
3540 | |
3541 | putpkt ("qOffsets"); | |
6d820c5c | 3542 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3543 | buf = rs->buf; |
c906108c SS |
3544 | |
3545 | if (buf[0] == '\000') | |
3546 | return; /* Return silently. Stub doesn't support | |
23860348 | 3547 | this command. */ |
c906108c SS |
3548 | if (buf[0] == 'E') |
3549 | { | |
8a3fe4f8 | 3550 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3551 | return; |
3552 | } | |
3553 | ||
3554 | /* Pick up each field in turn. This used to be done with scanf, but | |
3555 | scanf will make trouble if CORE_ADDR size doesn't match | |
3556 | conversion directives correctly. The following code will work | |
3557 | with any size of CORE_ADDR. */ | |
3558 | text_addr = data_addr = bss_addr = 0; | |
3559 | ptr = buf; | |
3560 | lose = 0; | |
3561 | ||
61012eef | 3562 | if (startswith (ptr, "Text=")) |
c906108c SS |
3563 | { |
3564 | ptr += 5; | |
3565 | /* Don't use strtol, could lose on big values. */ | |
3566 | while (*ptr && *ptr != ';') | |
3567 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3568 | |
61012eef | 3569 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3570 | { |
3571 | ptr += 6; | |
3572 | while (*ptr && *ptr != ';') | |
3573 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3574 | } | |
3575 | else | |
3576 | lose = 1; | |
3577 | ||
61012eef | 3578 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3579 | { |
3580 | ptr += 5; | |
3581 | while (*ptr && *ptr != ';') | |
3582 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3583 | |
31d99776 DJ |
3584 | if (bss_addr != data_addr) |
3585 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3586 | } | |
3587 | else | |
3588 | lose = 1; | |
3589 | } | |
61012eef | 3590 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3591 | { |
31d99776 DJ |
3592 | ptr += 8; |
3593 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3594 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3595 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3596 | num_segments = 1; | |
3597 | ||
61012eef | 3598 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3599 | { |
3600 | ptr += 9; | |
3601 | while (*ptr && *ptr != ';') | |
3602 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3603 | num_segments++; | |
3604 | } | |
c906108c SS |
3605 | } |
3606 | else | |
3607 | lose = 1; | |
3608 | ||
3609 | if (lose) | |
8a3fe4f8 | 3610 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3611 | else if (*ptr != '\0') |
3612 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3613 | |
802188a7 | 3614 | offs = ((struct section_offsets *) |
a39a16c4 | 3615 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3616 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3617 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3618 | |
31d99776 DJ |
3619 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3620 | do_segments = (data != NULL); | |
3621 | do_sections = num_segments == 0; | |
c906108c | 3622 | |
28c32713 | 3623 | if (num_segments > 0) |
31d99776 | 3624 | { |
31d99776 DJ |
3625 | segments[0] = text_addr; |
3626 | segments[1] = data_addr; | |
3627 | } | |
28c32713 JB |
3628 | /* If we have two segments, we can still try to relocate everything |
3629 | by assuming that the .text and .data offsets apply to the whole | |
3630 | text and data segments. Convert the offsets given in the packet | |
3631 | to base addresses for symfile_map_offsets_to_segments. */ | |
3632 | else if (data && data->num_segments == 2) | |
3633 | { | |
3634 | segments[0] = data->segment_bases[0] + text_addr; | |
3635 | segments[1] = data->segment_bases[1] + data_addr; | |
3636 | num_segments = 2; | |
3637 | } | |
8d385431 DJ |
3638 | /* If the object file has only one segment, assume that it is text |
3639 | rather than data; main programs with no writable data are rare, | |
3640 | but programs with no code are useless. Of course the code might | |
3641 | have ended up in the data segment... to detect that we would need | |
3642 | the permissions here. */ | |
3643 | else if (data && data->num_segments == 1) | |
3644 | { | |
3645 | segments[0] = data->segment_bases[0] + text_addr; | |
3646 | num_segments = 1; | |
3647 | } | |
28c32713 JB |
3648 | /* There's no way to relocate by segment. */ |
3649 | else | |
3650 | do_segments = 0; | |
31d99776 DJ |
3651 | |
3652 | if (do_segments) | |
3653 | { | |
3654 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3655 | offs, num_segments, segments); | |
3656 | ||
3657 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3658 | error (_("Can not handle qOffsets TextSeg " |
3659 | "response with this symbol file")); | |
31d99776 DJ |
3660 | |
3661 | if (ret > 0) | |
3662 | do_sections = 0; | |
3663 | } | |
c906108c | 3664 | |
9ef895d6 DJ |
3665 | if (data) |
3666 | free_symfile_segment_data (data); | |
31d99776 DJ |
3667 | |
3668 | if (do_sections) | |
3669 | { | |
3670 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3671 | ||
3e43a32a MS |
3672 | /* This is a temporary kludge to force data and bss to use the |
3673 | same offsets because that's what nlmconv does now. The real | |
3674 | solution requires changes to the stub and remote.c that I | |
3675 | don't have time to do right now. */ | |
31d99776 DJ |
3676 | |
3677 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3678 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3679 | } | |
c906108c SS |
3680 | |
3681 | objfile_relocate (symfile_objfile, offs); | |
3682 | } | |
3683 | ||
9a7071a8 JB |
3684 | /* Send interrupt_sequence to remote target. */ |
3685 | static void | |
eeae04df | 3686 | send_interrupt_sequence (void) |
9a7071a8 | 3687 | { |
5d93a237 TT |
3688 | struct remote_state *rs = get_remote_state (); |
3689 | ||
9a7071a8 | 3690 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3691 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3692 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3693 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3694 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3695 | { | |
5d93a237 | 3696 | serial_send_break (rs->remote_desc); |
c33e31fd | 3697 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3698 | } |
3699 | else | |
3700 | internal_error (__FILE__, __LINE__, | |
3701 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3702 | interrupt_sequence_mode); | |
3703 | } | |
3704 | ||
3405876a PA |
3705 | |
3706 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3707 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3708 | ||
3709 | static ptid_t | |
3710 | stop_reply_extract_thread (char *stop_reply) | |
3711 | { | |
3712 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3713 | { | |
3714 | char *p; | |
3715 | ||
3716 | /* Txx r:val ; r:val (...) */ | |
3717 | p = &stop_reply[3]; | |
3718 | ||
3719 | /* Look for "register" named "thread". */ | |
3720 | while (*p != '\0') | |
3721 | { | |
3722 | char *p1; | |
3723 | ||
3724 | p1 = strchr (p, ':'); | |
3725 | if (p1 == NULL) | |
3726 | return null_ptid; | |
3727 | ||
3728 | if (strncmp (p, "thread", p1 - p) == 0) | |
3729 | return read_ptid (++p1, &p); | |
3730 | ||
3731 | p1 = strchr (p, ';'); | |
3732 | if (p1 == NULL) | |
3733 | return null_ptid; | |
3734 | p1++; | |
3735 | ||
3736 | p = p1; | |
3737 | } | |
3738 | } | |
3739 | ||
3740 | return null_ptid; | |
3741 | } | |
3742 | ||
b7ea362b PA |
3743 | /* Determine the remote side's current thread. If we have a stop |
3744 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3745 | "thread" register we can extract the current thread from. If not, | |
3746 | ask the remote which is the current thread with qC. The former | |
3747 | method avoids a roundtrip. */ | |
3748 | ||
3749 | static ptid_t | |
3750 | get_current_thread (char *wait_status) | |
3751 | { | |
6a49a997 | 3752 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3753 | |
3754 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3755 | the target architecture, which we haven't yet fully determined at | |
3756 | this point. */ | |
3757 | if (wait_status != NULL) | |
3758 | ptid = stop_reply_extract_thread (wait_status); | |
3759 | if (ptid_equal (ptid, null_ptid)) | |
3760 | ptid = remote_current_thread (inferior_ptid); | |
3761 | ||
3762 | return ptid; | |
3763 | } | |
3764 | ||
49c62f2e PA |
3765 | /* Query the remote target for which is the current thread/process, |
3766 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3767 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3768 | to return the current thread. |
3769 | ||
3770 | This function is called after handling the '?' or 'vRun' packets, | |
3771 | whose response is a stop reply from which we can also try | |
3772 | extracting the thread. If the target doesn't support the explicit | |
3773 | qC query, we infer the current thread from that stop reply, passed | |
3774 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3775 | |
3776 | static void | |
3405876a | 3777 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3778 | { |
3779 | struct remote_state *rs = get_remote_state (); | |
3780 | int fake_pid_p = 0; | |
6a49a997 | 3781 | ptid_t ptid; |
49c62f2e PA |
3782 | |
3783 | inferior_ptid = null_ptid; | |
3784 | ||
b7ea362b PA |
3785 | /* Now, if we have thread information, update inferior_ptid. */ |
3786 | ptid = get_current_thread (wait_status); | |
3405876a | 3787 | |
49c62f2e PA |
3788 | if (!ptid_equal (ptid, null_ptid)) |
3789 | { | |
3790 | if (!remote_multi_process_p (rs)) | |
3791 | fake_pid_p = 1; | |
3792 | ||
3793 | inferior_ptid = ptid; | |
3794 | } | |
3795 | else | |
3796 | { | |
3797 | /* Without this, some commands which require an active target | |
3798 | (such as kill) won't work. This variable serves (at least) | |
3799 | double duty as both the pid of the target process (if it has | |
3800 | such), and as a flag indicating that a target is active. */ | |
3801 | inferior_ptid = magic_null_ptid; | |
3802 | fake_pid_p = 1; | |
3803 | } | |
3804 | ||
1b6e6f5c | 3805 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3806 | |
3807 | /* Add the main thread. */ | |
3808 | add_thread_silent (inferior_ptid); | |
3809 | } | |
3810 | ||
6efcd9a8 PA |
3811 | /* Print info about a thread that was found already stopped on |
3812 | connection. */ | |
3813 | ||
3814 | static void | |
3815 | print_one_stopped_thread (struct thread_info *thread) | |
3816 | { | |
3817 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
3818 | ||
3819 | switch_to_thread (thread->ptid); | |
3820 | stop_pc = get_frame_pc (get_current_frame ()); | |
3821 | set_current_sal_from_frame (get_current_frame ()); | |
3822 | ||
3823 | thread->suspend.waitstatus_pending_p = 0; | |
3824 | ||
3825 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
3826 | { | |
3827 | enum gdb_signal sig = ws->value.sig; | |
3828 | ||
3829 | if (signal_print_state (sig)) | |
3830 | observer_notify_signal_received (sig); | |
3831 | } | |
3832 | observer_notify_normal_stop (NULL, 1); | |
3833 | } | |
3834 | ||
221e1a37 PA |
3835 | /* Process all initial stop replies the remote side sent in response |
3836 | to the ? packet. These indicate threads that were already stopped | |
3837 | on initial connection. We mark these threads as stopped and print | |
3838 | their current frame before giving the user the prompt. */ | |
3839 | ||
3840 | static void | |
6efcd9a8 | 3841 | process_initial_stop_replies (int from_tty) |
221e1a37 PA |
3842 | { |
3843 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
3844 | struct inferior *inf; |
3845 | struct thread_info *thread; | |
3846 | struct thread_info *selected = NULL; | |
3847 | struct thread_info *lowest_stopped = NULL; | |
3848 | struct thread_info *first = NULL; | |
221e1a37 PA |
3849 | |
3850 | /* Consume the initial pending events. */ | |
3851 | while (pending_stop_replies-- > 0) | |
3852 | { | |
3853 | ptid_t waiton_ptid = minus_one_ptid; | |
3854 | ptid_t event_ptid; | |
3855 | struct target_waitstatus ws; | |
3856 | int ignore_event = 0; | |
6efcd9a8 | 3857 | struct thread_info *thread; |
221e1a37 PA |
3858 | |
3859 | memset (&ws, 0, sizeof (ws)); | |
3860 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3861 | if (remote_debug) | |
3862 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3863 | ||
3864 | switch (ws.kind) | |
3865 | { | |
3866 | case TARGET_WAITKIND_IGNORE: | |
3867 | case TARGET_WAITKIND_NO_RESUMED: | |
3868 | case TARGET_WAITKIND_SIGNALLED: | |
3869 | case TARGET_WAITKIND_EXITED: | |
3870 | /* We shouldn't see these, but if we do, just ignore. */ | |
3871 | if (remote_debug) | |
3872 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3873 | ignore_event = 1; | |
3874 | break; | |
3875 | ||
3876 | case TARGET_WAITKIND_EXECD: | |
3877 | xfree (ws.value.execd_pathname); | |
3878 | break; | |
3879 | default: | |
3880 | break; | |
3881 | } | |
3882 | ||
3883 | if (ignore_event) | |
3884 | continue; | |
3885 | ||
6efcd9a8 | 3886 | thread = find_thread_ptid (event_ptid); |
221e1a37 PA |
3887 | |
3888 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3889 | { | |
3890 | enum gdb_signal sig = ws.value.sig; | |
3891 | ||
3892 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3893 | instead of signal 0. Suppress it. */ | |
3894 | if (sig == GDB_SIGNAL_TRAP) | |
3895 | sig = GDB_SIGNAL_0; | |
6efcd9a8 PA |
3896 | thread->suspend.stop_signal = sig; |
3897 | ws.value.sig = sig; | |
3898 | } | |
221e1a37 | 3899 | |
6efcd9a8 PA |
3900 | thread->suspend.waitstatus = ws; |
3901 | ||
3902 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
3903 | || ws.value.sig != GDB_SIGNAL_0) | |
3904 | thread->suspend.waitstatus_pending_p = 1; | |
3905 | ||
3906 | set_executing (event_ptid, 0); | |
3907 | set_running (event_ptid, 0); | |
3908 | } | |
3909 | ||
3910 | /* "Notice" the new inferiors before anything related to | |
3911 | registers/memory. */ | |
3912 | ALL_INFERIORS (inf) | |
3913 | { | |
3914 | if (inf->pid == 0) | |
3915 | continue; | |
3916 | ||
3917 | inf->needs_setup = 1; | |
3918 | ||
3919 | if (non_stop) | |
3920 | { | |
3921 | thread = any_live_thread_of_process (inf->pid); | |
3922 | notice_new_inferior (thread->ptid, | |
3923 | thread->state == THREAD_RUNNING, | |
3924 | from_tty); | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | /* If all-stop on top of non-stop, pause all threads. Note this | |
3929 | records the threads' stop pc, so must be done after "noticing" | |
3930 | the inferiors. */ | |
3931 | if (!non_stop) | |
3932 | { | |
3933 | stop_all_threads (); | |
3934 | ||
3935 | /* If all threads of an inferior were already stopped, we | |
3936 | haven't setup the inferior yet. */ | |
3937 | ALL_INFERIORS (inf) | |
3938 | { | |
3939 | if (inf->pid == 0) | |
3940 | continue; | |
221e1a37 | 3941 | |
6efcd9a8 PA |
3942 | if (inf->needs_setup) |
3943 | { | |
3944 | thread = any_live_thread_of_process (inf->pid); | |
3945 | switch_to_thread_no_regs (thread); | |
3946 | setup_inferior (0); | |
3947 | } | |
3948 | } | |
221e1a37 | 3949 | } |
6efcd9a8 PA |
3950 | |
3951 | /* Now go over all threads that are stopped, and print their current | |
3952 | frame. If all-stop, then if there's a signalled thread, pick | |
3953 | that as current. */ | |
3954 | ALL_NON_EXITED_THREADS (thread) | |
3955 | { | |
3956 | struct target_waitstatus *ws; | |
3957 | ||
3958 | if (first == NULL) | |
3959 | first = thread; | |
3960 | ||
3961 | if (!non_stop) | |
3962 | set_running (thread->ptid, 0); | |
3963 | else if (thread->state != THREAD_STOPPED) | |
3964 | continue; | |
3965 | ||
3966 | ws = &thread->suspend.waitstatus; | |
3967 | ||
3968 | if (selected == NULL | |
3969 | && thread->suspend.waitstatus_pending_p) | |
3970 | selected = thread; | |
3971 | ||
5d5658a1 PA |
3972 | if (lowest_stopped == NULL |
3973 | || thread->inf->num < lowest_stopped->inf->num | |
3974 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
3975 | lowest_stopped = thread; |
3976 | ||
3977 | if (non_stop) | |
3978 | print_one_stopped_thread (thread); | |
3979 | } | |
3980 | ||
3981 | /* In all-stop, we only print the status of one thread, and leave | |
3982 | others with their status pending. */ | |
3983 | if (!non_stop) | |
3984 | { | |
3985 | thread = selected; | |
3986 | if (thread == NULL) | |
3987 | thread = lowest_stopped; | |
3988 | if (thread == NULL) | |
3989 | thread = first; | |
3990 | ||
3991 | print_one_stopped_thread (thread); | |
3992 | } | |
3993 | ||
3994 | /* For "info program". */ | |
3995 | thread = inferior_thread (); | |
3996 | if (thread->state == THREAD_STOPPED) | |
3997 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
3998 | } |
3999 | ||
9cbc821d | 4000 | static void |
04bd08de | 4001 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 4002 | { |
c8d104ad PA |
4003 | struct remote_state *rs = get_remote_state (); |
4004 | struct packet_config *noack_config; | |
2d717e4f | 4005 | char *wait_status = NULL; |
8621d6a9 | 4006 | |
23860348 | 4007 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 4008 | QUIT; |
c906108c | 4009 | |
9a7071a8 JB |
4010 | if (interrupt_on_connect) |
4011 | send_interrupt_sequence (); | |
4012 | ||
57e12211 | 4013 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 4014 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 4015 | |
1e51243a PA |
4016 | /* Signal other parts that we're going through the initial setup, |
4017 | and so things may not be stable yet. */ | |
4018 | rs->starting_up = 1; | |
4019 | ||
c8d104ad PA |
4020 | /* The first packet we send to the target is the optional "supported |
4021 | packets" request. If the target can answer this, it will tell us | |
4022 | which later probes to skip. */ | |
4023 | remote_query_supported (); | |
4024 | ||
d914c394 | 4025 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4026 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 4027 | remote_set_permissions (target); |
d914c394 | 4028 | |
c8d104ad PA |
4029 | /* Next, we possibly activate noack mode. |
4030 | ||
4031 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4032 | enable noack mode if the stub reported a wish for it with | |
4033 | qSupported. | |
4034 | ||
4035 | If set to TRUE, then enable noack mode even if the stub didn't | |
4036 | report it in qSupported. If the stub doesn't reply OK, the | |
4037 | session ends with an error. | |
4038 | ||
4039 | If FALSE, then don't activate noack mode, regardless of what the | |
4040 | stub claimed should be the default with qSupported. */ | |
4041 | ||
4042 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4043 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4044 | { |
4045 | putpkt ("QStartNoAckMode"); | |
4046 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4047 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
4048 | rs->noack_mode = 1; | |
4049 | } | |
4050 | ||
04bd08de | 4051 | if (extended_p) |
5fe04517 PA |
4052 | { |
4053 | /* Tell the remote that we are using the extended protocol. */ | |
4054 | putpkt ("!"); | |
4055 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4056 | } | |
4057 | ||
9b224c5e PA |
4058 | /* Let the target know which signals it is allowed to pass down to |
4059 | the program. */ | |
4060 | update_signals_program_target (); | |
4061 | ||
d962ef82 DJ |
4062 | /* Next, if the target can specify a description, read it. We do |
4063 | this before anything involving memory or registers. */ | |
4064 | target_find_description (); | |
4065 | ||
6c95b8df PA |
4066 | /* Next, now that we know something about the target, update the |
4067 | address spaces in the program spaces. */ | |
4068 | update_address_spaces (); | |
4069 | ||
50c71eaf PA |
4070 | /* On OSs where the list of libraries is global to all |
4071 | processes, we fetch them early. */ | |
f5656ead | 4072 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 4073 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 4074 | |
6efcd9a8 | 4075 | if (target_is_non_stop_p ()) |
74531fed | 4076 | { |
4082afcc | 4077 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4078 | error (_("Non-stop mode requested, but remote " |
4079 | "does not support non-stop")); | |
74531fed PA |
4080 | |
4081 | putpkt ("QNonStop:1"); | |
4082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4083 | ||
4084 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4085 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
4086 | |
4087 | /* Find about threads and processes the stub is already | |
4088 | controlling. We default to adding them in the running state. | |
4089 | The '?' query below will then tell us about which threads are | |
4090 | stopped. */ | |
e8032dde | 4091 | remote_update_thread_list (target); |
74531fed | 4092 | } |
4082afcc | 4093 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4094 | { |
4095 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4096 | Request it explicitly. */ |
74531fed PA |
4097 | putpkt ("QNonStop:0"); |
4098 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4099 | ||
4100 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 4101 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
4102 | } |
4103 | ||
a0743c90 YQ |
4104 | /* Upload TSVs regardless of whether the target is running or not. The |
4105 | remote stub, such as GDBserver, may have some predefined or builtin | |
4106 | TSVs, even if the target is not running. */ | |
8bd200f1 | 4107 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
4108 | { |
4109 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4110 | ||
181e3713 | 4111 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
4112 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4113 | } | |
4114 | ||
2d717e4f DJ |
4115 | /* Check whether the target is running now. */ |
4116 | putpkt ("?"); | |
4117 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4118 | ||
6efcd9a8 | 4119 | if (!target_is_non_stop_p ()) |
2d717e4f | 4120 | { |
e714e1bf UW |
4121 | ptid_t ptid; |
4122 | int fake_pid_p = 0; | |
4123 | struct inferior *inf; | |
4124 | ||
74531fed | 4125 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4126 | { |
04bd08de | 4127 | if (!extended_p) |
74531fed | 4128 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4129 | |
4130 | /* We're connected, but not running. Drop out before we | |
4131 | call start_remote. */ | |
e278ad5b | 4132 | rs->starting_up = 0; |
c35b1492 | 4133 | return; |
2d717e4f DJ |
4134 | } |
4135 | else | |
74531fed | 4136 | { |
74531fed | 4137 | /* Save the reply for later. */ |
224c3ddb | 4138 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4139 | strcpy (wait_status, rs->buf); |
4140 | } | |
4141 | ||
b7ea362b | 4142 | /* Fetch thread list. */ |
e8032dde | 4143 | target_update_thread_list (); |
b7ea362b | 4144 | |
74531fed PA |
4145 | /* Let the stub know that we want it to return the thread. */ |
4146 | set_continue_thread (minus_one_ptid); | |
4147 | ||
b7ea362b PA |
4148 | if (thread_count () == 0) |
4149 | { | |
4150 | /* Target has no concept of threads at all. GDB treats | |
4151 | non-threaded target as single-threaded; add a main | |
4152 | thread. */ | |
4153 | add_current_inferior_and_thread (wait_status); | |
4154 | } | |
4155 | else | |
4156 | { | |
4157 | /* We have thread information; select the thread the target | |
4158 | says should be current. If we're reconnecting to a | |
4159 | multi-threaded program, this will ideally be the thread | |
4160 | that last reported an event before GDB disconnected. */ | |
4161 | inferior_ptid = get_current_thread (wait_status); | |
4162 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4163 | { | |
4164 | /* Odd... The target was able to list threads, but not | |
4165 | tell us which thread was current (no "thread" | |
4166 | register in T stop reply?). Just pick the first | |
4167 | thread in the thread list then. */ | |
c9f35b34 KB |
4168 | |
4169 | if (remote_debug) | |
4170 | fprintf_unfiltered (gdb_stdlog, | |
4171 | "warning: couldn't determine remote " | |
4172 | "current thread; picking first in list.\n"); | |
4173 | ||
b7ea362b PA |
4174 | inferior_ptid = thread_list->ptid; |
4175 | } | |
4176 | } | |
74531fed | 4177 | |
6e586cc5 YQ |
4178 | /* init_wait_for_inferior should be called before get_offsets in order |
4179 | to manage `inserted' flag in bp loc in a correct state. | |
4180 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4181 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4182 | start_remote, set `inserted' flag to 1. In the initialization of | |
4183 | inferior, breakpoint_init_inferior should be called first, and then | |
4184 | breakpoint_re_set can be called. If this order is broken, state of | |
4185 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4186 | manipulation. */ | |
4187 | init_wait_for_inferior (); | |
4188 | ||
74531fed PA |
4189 | get_offsets (); /* Get text, data & bss offsets. */ |
4190 | ||
d962ef82 DJ |
4191 | /* If we could not find a description using qXfer, and we know |
4192 | how to do it some other way, try again. This is not | |
4193 | supported for non-stop; it could be, but it is tricky if | |
4194 | there are no stopped threads when we connect. */ | |
04bd08de | 4195 | if (remote_read_description_p (target) |
f5656ead | 4196 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4197 | { |
4198 | target_clear_description (); | |
4199 | target_find_description (); | |
4200 | } | |
4201 | ||
74531fed PA |
4202 | /* Use the previously fetched status. */ |
4203 | gdb_assert (wait_status != NULL); | |
4204 | strcpy (rs->buf, wait_status); | |
4205 | rs->cached_wait_status = 1; | |
4206 | ||
4207 | immediate_quit--; | |
04bd08de | 4208 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4209 | } |
4210 | else | |
4211 | { | |
68c97600 PA |
4212 | /* Clear WFI global state. Do this before finding about new |
4213 | threads and inferiors, and setting the current inferior. | |
4214 | Otherwise we would clear the proceed status of the current | |
4215 | inferior when we want its stop_soon state to be preserved | |
4216 | (see notice_new_inferior). */ | |
4217 | init_wait_for_inferior (); | |
4218 | ||
74531fed PA |
4219 | /* In non-stop, we will either get an "OK", meaning that there |
4220 | are no stopped threads at this time; or, a regular stop | |
4221 | reply. In the latter case, there may be more than one thread | |
4222 | stopped --- we pull them all out using the vStopped | |
4223 | mechanism. */ | |
4224 | if (strcmp (rs->buf, "OK") != 0) | |
4225 | { | |
722247f1 | 4226 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4227 | |
722247f1 YQ |
4228 | /* remote_notif_get_pending_replies acks this one, and gets |
4229 | the rest out. */ | |
f48ff2a7 | 4230 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
4231 | = remote_notif_parse (notif, rs->buf); |
4232 | remote_notif_get_pending_events (notif); | |
74531fed | 4233 | } |
2d717e4f | 4234 | |
74531fed PA |
4235 | if (thread_count () == 0) |
4236 | { | |
04bd08de | 4237 | if (!extended_p) |
74531fed | 4238 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4239 | |
c35b1492 PA |
4240 | /* We're connected, but not running. Drop out before we |
4241 | call start_remote. */ | |
e278ad5b | 4242 | rs->starting_up = 0; |
c35b1492 PA |
4243 | return; |
4244 | } | |
74531fed | 4245 | |
74531fed PA |
4246 | /* In non-stop mode, any cached wait status will be stored in |
4247 | the stop reply queue. */ | |
4248 | gdb_assert (wait_status == NULL); | |
f0223081 | 4249 | |
2455069d | 4250 | /* Report all signals during attach/startup. */ |
94bedb42 | 4251 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4252 | |
4253 | /* If there are already stopped threads, mark them stopped and | |
4254 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4255 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4256 | |
4257 | if (target_can_async_p ()) | |
4258 | target_async (1); | |
74531fed | 4259 | } |
c8d104ad | 4260 | |
c8d104ad PA |
4261 | /* If we connected to a live target, do some additional setup. */ |
4262 | if (target_has_execution) | |
4263 | { | |
f4ccffad | 4264 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4265 | remote_check_symbols (); |
c8d104ad | 4266 | } |
50c71eaf | 4267 | |
d5551862 SS |
4268 | /* Possibly the target has been engaged in a trace run started |
4269 | previously; find out where things are at. */ | |
8bd200f1 | 4270 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4271 | { |
00bf0b85 | 4272 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4273 | |
00bf0b85 SS |
4274 | if (current_trace_status ()->running) |
4275 | printf_filtered (_("Trace is already running on the target.\n")); | |
4276 | ||
ab6617cc | 4277 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4278 | |
4279 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4280 | } |
4281 | ||
1e51243a PA |
4282 | /* The thread and inferior lists are now synchronized with the |
4283 | target, our symbols have been relocated, and we're merged the | |
4284 | target's tracepoints with ours. We're done with basic start | |
4285 | up. */ | |
4286 | rs->starting_up = 0; | |
4287 | ||
a25a5a45 PA |
4288 | /* Maybe breakpoints are global and need to be inserted now. */ |
4289 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4290 | insert_breakpoints (); |
c906108c SS |
4291 | } |
4292 | ||
4293 | /* Open a connection to a remote debugger. | |
4294 | NAME is the filename used for communication. */ | |
4295 | ||
4296 | static void | |
014f9477 | 4297 | remote_open (const char *name, int from_tty) |
c906108c | 4298 | { |
75c99385 | 4299 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4300 | } |
4301 | ||
c906108c SS |
4302 | /* Open a connection to a remote debugger using the extended |
4303 | remote gdb protocol. NAME is the filename used for communication. */ | |
4304 | ||
4305 | static void | |
014f9477 | 4306 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4307 | { |
75c99385 | 4308 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4309 | } |
4310 | ||
ca4f7f8b PA |
4311 | /* Reset all packets back to "unknown support". Called when opening a |
4312 | new connection to a remote target. */ | |
c906108c | 4313 | |
d471ea57 | 4314 | static void |
ca4f7f8b | 4315 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4316 | { |
4317 | int i; | |
a744cf53 | 4318 | |
444abaca | 4319 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4320 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4321 | } |
4322 | ||
ca4f7f8b PA |
4323 | /* Initialize all packet configs. */ |
4324 | ||
4325 | static void | |
4326 | init_all_packet_configs (void) | |
4327 | { | |
4328 | int i; | |
4329 | ||
4330 | for (i = 0; i < PACKET_MAX; i++) | |
4331 | { | |
4332 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4333 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4334 | } | |
4335 | } | |
4336 | ||
23860348 | 4337 | /* Symbol look-up. */ |
dc8acb97 MS |
4338 | |
4339 | static void | |
36d25514 | 4340 | remote_check_symbols (void) |
dc8acb97 | 4341 | { |
d01949b6 | 4342 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4343 | char *msg, *reply, *tmp; |
3b7344d5 | 4344 | struct bound_minimal_symbol sym; |
dc8acb97 | 4345 | int end; |
a5c0808e | 4346 | struct cleanup *old_chain; |
dc8acb97 | 4347 | |
63154eca PA |
4348 | /* The remote side has no concept of inferiors that aren't running |
4349 | yet, it only knows about running processes. If we're connected | |
4350 | but our current inferior is not running, we should not invite the | |
4351 | remote target to request symbol lookups related to its | |
4352 | (unrelated) current process. */ | |
4353 | if (!target_has_execution) | |
4354 | return; | |
4355 | ||
4082afcc | 4356 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4357 | return; |
4358 | ||
63154eca PA |
4359 | /* Make sure the remote is pointing at the right process. Note |
4360 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4361 | set_general_process (); |
4362 | ||
6d820c5c DJ |
4363 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4364 | because we need both at the same time. */ | |
224c3ddb | 4365 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4366 | old_chain = make_cleanup (xfree, msg); |
6d820c5c | 4367 | |
23860348 | 4368 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4369 | |
4370 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
4371 | getpkt (&rs->buf, &rs->buf_size, 0); |
4372 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 4373 | reply = rs->buf; |
dc8acb97 | 4374 | |
61012eef | 4375 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4376 | { |
77e371c0 TT |
4377 | struct bound_minimal_symbol sym; |
4378 | ||
dc8acb97 | 4379 | tmp = &reply[8]; |
cfd77fa1 | 4380 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4381 | msg[end] = '\0'; |
4382 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4383 | if (sym.minsym == NULL) |
ea9c271d | 4384 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4385 | else |
2bbe3cc1 | 4386 | { |
f5656ead | 4387 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4388 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4389 | |
4390 | /* If this is a function address, return the start of code | |
4391 | instead of any data function descriptor. */ | |
f5656ead | 4392 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4393 | sym_addr, |
4394 | ¤t_target); | |
4395 | ||
4396 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4397 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4398 | } |
4399 | ||
dc8acb97 | 4400 | putpkt (msg); |
6d820c5c | 4401 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4402 | reply = rs->buf; |
dc8acb97 | 4403 | } |
a5c0808e PA |
4404 | |
4405 | do_cleanups (old_chain); | |
dc8acb97 MS |
4406 | } |
4407 | ||
9db8d71f | 4408 | static struct serial * |
baa336ce | 4409 | remote_serial_open (const char *name) |
9db8d71f DJ |
4410 | { |
4411 | static int udp_warning = 0; | |
4412 | ||
4413 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4414 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4415 | serial connection is reliable and not the serial connection promising | |
4416 | to be. */ | |
61012eef | 4417 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4418 | { |
3e43a32a MS |
4419 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4420 | "Some events may be lost, rendering further debugging " | |
4421 | "impossible.")); | |
9db8d71f DJ |
4422 | udp_warning = 1; |
4423 | } | |
4424 | ||
4425 | return serial_open (name); | |
4426 | } | |
4427 | ||
d914c394 SS |
4428 | /* Inform the target of our permission settings. The permission flags |
4429 | work without this, but if the target knows the settings, it can do | |
4430 | a couple things. First, it can add its own check, to catch cases | |
4431 | that somehow manage to get by the permissions checks in target | |
4432 | methods. Second, if the target is wired to disallow particular | |
4433 | settings (for instance, a system in the field that is not set up to | |
4434 | be able to stop at a breakpoint), it can object to any unavailable | |
4435 | permissions. */ | |
4436 | ||
4437 | void | |
c378d69d | 4438 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4439 | { |
4440 | struct remote_state *rs = get_remote_state (); | |
4441 | ||
bba74b36 YQ |
4442 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4443 | "WriteReg:%x;WriteMem:%x;" | |
4444 | "InsertBreak:%x;InsertTrace:%x;" | |
4445 | "InsertFastTrace:%x;Stop:%x", | |
4446 | may_write_registers, may_write_memory, | |
4447 | may_insert_breakpoints, may_insert_tracepoints, | |
4448 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4449 | putpkt (rs->buf); |
4450 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4451 | ||
4452 | /* If the target didn't like the packet, warn the user. Do not try | |
4453 | to undo the user's settings, that would just be maddening. */ | |
4454 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4455 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4456 | } |
4457 | ||
be2a5f71 DJ |
4458 | /* This type describes each known response to the qSupported |
4459 | packet. */ | |
4460 | struct protocol_feature | |
4461 | { | |
4462 | /* The name of this protocol feature. */ | |
4463 | const char *name; | |
4464 | ||
4465 | /* The default for this protocol feature. */ | |
4466 | enum packet_support default_support; | |
4467 | ||
4468 | /* The function to call when this feature is reported, or after | |
4469 | qSupported processing if the feature is not supported. | |
4470 | The first argument points to this structure. The second | |
4471 | argument indicates whether the packet requested support be | |
4472 | enabled, disabled, or probed (or the default, if this function | |
4473 | is being called at the end of processing and this feature was | |
4474 | not reported). The third argument may be NULL; if not NULL, it | |
4475 | is a NUL-terminated string taken from the packet following | |
4476 | this feature's name and an equals sign. */ | |
4477 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4478 | const char *); | |
4479 | ||
4480 | /* The corresponding packet for this feature. Only used if | |
4481 | FUNC is remote_supported_packet. */ | |
4482 | int packet; | |
4483 | }; | |
4484 | ||
be2a5f71 DJ |
4485 | static void |
4486 | remote_supported_packet (const struct protocol_feature *feature, | |
4487 | enum packet_support support, | |
4488 | const char *argument) | |
4489 | { | |
4490 | if (argument) | |
4491 | { | |
4492 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4493 | " \"%s\"."), feature->name); | |
4494 | return; | |
4495 | } | |
4496 | ||
4082afcc | 4497 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4498 | } |
be2a5f71 DJ |
4499 | |
4500 | static void | |
4501 | remote_packet_size (const struct protocol_feature *feature, | |
4502 | enum packet_support support, const char *value) | |
4503 | { | |
4504 | struct remote_state *rs = get_remote_state (); | |
4505 | ||
4506 | int packet_size; | |
4507 | char *value_end; | |
4508 | ||
4509 | if (support != PACKET_ENABLE) | |
4510 | return; | |
4511 | ||
4512 | if (value == NULL || *value == '\0') | |
4513 | { | |
4514 | warning (_("Remote target reported \"%s\" without a size."), | |
4515 | feature->name); | |
4516 | return; | |
4517 | } | |
4518 | ||
4519 | errno = 0; | |
4520 | packet_size = strtol (value, &value_end, 16); | |
4521 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4522 | { | |
4523 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4524 | feature->name, value); | |
4525 | return; | |
4526 | } | |
4527 | ||
be2a5f71 DJ |
4528 | /* Record the new maximum packet size. */ |
4529 | rs->explicit_packet_size = packet_size; | |
4530 | } | |
4531 | ||
dc473cfb | 4532 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4533 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4534 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4535 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4536 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4537 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4538 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4539 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4540 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4541 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4542 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4543 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4544 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4545 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4546 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4547 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4548 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4549 | PACKET_qXfer_spu_read }, | |
4550 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4551 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4552 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4553 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4554 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4555 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4556 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4557 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4558 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4559 | PACKET_QPassSignals }, | |
82075af2 JS |
4560 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
4561 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
4562 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4563 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4564 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4565 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4566 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4567 | PACKET_multiprocess_feature }, | |
4568 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4569 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4570 | PACKET_qXfer_siginfo_read }, | |
4571 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4572 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4573 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4574 | PACKET_ConditionalTracepoints }, |
4082afcc | 4575 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4576 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4577 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4578 | PACKET_BreakpointCommands }, |
4082afcc | 4579 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4580 | PACKET_FastTracepoints }, |
4082afcc | 4581 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4582 | PACKET_StaticTracepoints }, |
4082afcc | 4583 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4584 | PACKET_InstallInTrace}, |
4082afcc PA |
4585 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4586 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4587 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4588 | PACKET_bc }, | |
4589 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4590 | PACKET_bs }, | |
409873ef SS |
4591 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4592 | PACKET_TracepointSource }, | |
d914c394 SS |
4593 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4594 | PACKET_QAllow }, | |
4082afcc PA |
4595 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4596 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4597 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4598 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4599 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4600 | PACKET_qXfer_uib }, | |
03583c20 UW |
4601 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4602 | PACKET_QDisableRandomization }, | |
d1feda86 | 4603 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4604 | { "QTBuffer:size", PACKET_DISABLE, |
4605 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4606 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4607 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4608 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4609 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4610 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4611 | PACKET_qXfer_btrace }, |
4612 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4613 | PACKET_qXfer_btrace_conf }, |
4614 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4615 | PACKET_Qbtrace_conf_bts_size }, |
4616 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4617 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4618 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4619 | PACKET_fork_event_feature }, | |
4620 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4621 | PACKET_vfork_event_feature }, | |
94585166 DB |
4622 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4623 | PACKET_exec_event_feature }, | |
b20a6524 | 4624 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 4625 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
4626 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
4627 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 4628 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
4629 | }; |
4630 | ||
c8d5aac9 L |
4631 | static char *remote_support_xml; |
4632 | ||
4633 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4634 | ||
4635 | void | |
6e39997a | 4636 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4637 | { |
4638 | #if defined(HAVE_LIBEXPAT) | |
4639 | if (remote_support_xml == NULL) | |
c4f7c687 | 4640 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4641 | else |
4642 | { | |
4643 | char *copy = xstrdup (remote_support_xml + 13); | |
4644 | char *p = strtok (copy, ","); | |
4645 | ||
4646 | do | |
4647 | { | |
4648 | if (strcmp (p, xml) == 0) | |
4649 | { | |
4650 | /* already there */ | |
4651 | xfree (copy); | |
4652 | return; | |
4653 | } | |
4654 | } | |
4655 | while ((p = strtok (NULL, ",")) != NULL); | |
4656 | xfree (copy); | |
4657 | ||
94b0dee1 PA |
4658 | remote_support_xml = reconcat (remote_support_xml, |
4659 | remote_support_xml, ",", xml, | |
4660 | (char *) NULL); | |
c8d5aac9 L |
4661 | } |
4662 | #endif | |
4663 | } | |
4664 | ||
4665 | static char * | |
4666 | remote_query_supported_append (char *msg, const char *append) | |
4667 | { | |
4668 | if (msg) | |
94b0dee1 | 4669 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4670 | else |
4671 | return xstrdup (append); | |
4672 | } | |
4673 | ||
be2a5f71 DJ |
4674 | static void |
4675 | remote_query_supported (void) | |
4676 | { | |
4677 | struct remote_state *rs = get_remote_state (); | |
4678 | char *next; | |
4679 | int i; | |
4680 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4681 | ||
4682 | /* The packet support flags are handled differently for this packet | |
4683 | than for most others. We treat an error, a disabled packet, and | |
4684 | an empty response identically: any features which must be reported | |
4685 | to be used will be automatically disabled. An empty buffer | |
4686 | accomplishes this, since that is also the representation for a list | |
4687 | containing no features. */ | |
4688 | ||
4689 | rs->buf[0] = 0; | |
4082afcc | 4690 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4691 | { |
c8d5aac9 | 4692 | char *q = NULL; |
94b0dee1 | 4693 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4694 | |
73b8c1fd PA |
4695 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4696 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4697 | |
f7e6eed5 PA |
4698 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4699 | q = remote_query_supported_append (q, "swbreak+"); | |
4700 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4701 | q = remote_query_supported_append (q, "hwbreak+"); | |
4702 | ||
dde08ee1 PA |
4703 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4704 | ||
8020350c DB |
4705 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
4706 | != AUTO_BOOLEAN_FALSE) | |
4707 | q = remote_query_supported_append (q, "fork-events+"); | |
4708 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4709 | != AUTO_BOOLEAN_FALSE) | |
4710 | q = remote_query_supported_append (q, "vfork-events+"); | |
4711 | if (packet_set_cmd_state (PACKET_exec_event_feature) | |
4712 | != AUTO_BOOLEAN_FALSE) | |
4713 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 | 4714 | |
750ce8d1 YQ |
4715 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4716 | q = remote_query_supported_append (q, "vContSupported+"); | |
4717 | ||
65706a29 PA |
4718 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
4719 | q = remote_query_supported_append (q, "QThreadEvents+"); | |
4720 | ||
f2faf941 PA |
4721 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
4722 | q = remote_query_supported_append (q, "no-resumed+"); | |
4723 | ||
b35d5edb PA |
4724 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
4725 | the qSupported:xmlRegisters=i386 handling. */ | |
4726 | if (remote_support_xml != NULL) | |
4727 | q = remote_query_supported_append (q, remote_support_xml); | |
4728 | ||
dde08ee1 PA |
4729 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4730 | putpkt (q); | |
82f73884 | 4731 | |
94b0dee1 PA |
4732 | do_cleanups (old_chain); |
4733 | ||
be2a5f71 DJ |
4734 | getpkt (&rs->buf, &rs->buf_size, 0); |
4735 | ||
4736 | /* If an error occured, warn, but do not return - just reset the | |
4737 | buffer to empty and go on to disable features. */ | |
4738 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4739 | == PACKET_ERROR) | |
4740 | { | |
4741 | warning (_("Remote failure reply: %s"), rs->buf); | |
4742 | rs->buf[0] = 0; | |
4743 | } | |
4744 | } | |
4745 | ||
4746 | memset (seen, 0, sizeof (seen)); | |
4747 | ||
4748 | next = rs->buf; | |
4749 | while (*next) | |
4750 | { | |
4751 | enum packet_support is_supported; | |
4752 | char *p, *end, *name_end, *value; | |
4753 | ||
4754 | /* First separate out this item from the rest of the packet. If | |
4755 | there's another item after this, we overwrite the separator | |
4756 | (terminated strings are much easier to work with). */ | |
4757 | p = next; | |
4758 | end = strchr (p, ';'); | |
4759 | if (end == NULL) | |
4760 | { | |
4761 | end = p + strlen (p); | |
4762 | next = end; | |
4763 | } | |
4764 | else | |
4765 | { | |
89be2091 DJ |
4766 | *end = '\0'; |
4767 | next = end + 1; | |
4768 | ||
be2a5f71 DJ |
4769 | if (end == p) |
4770 | { | |
4771 | warning (_("empty item in \"qSupported\" response")); | |
4772 | continue; | |
4773 | } | |
be2a5f71 DJ |
4774 | } |
4775 | ||
4776 | name_end = strchr (p, '='); | |
4777 | if (name_end) | |
4778 | { | |
4779 | /* This is a name=value entry. */ | |
4780 | is_supported = PACKET_ENABLE; | |
4781 | value = name_end + 1; | |
4782 | *name_end = '\0'; | |
4783 | } | |
4784 | else | |
4785 | { | |
4786 | value = NULL; | |
4787 | switch (end[-1]) | |
4788 | { | |
4789 | case '+': | |
4790 | is_supported = PACKET_ENABLE; | |
4791 | break; | |
4792 | ||
4793 | case '-': | |
4794 | is_supported = PACKET_DISABLE; | |
4795 | break; | |
4796 | ||
4797 | case '?': | |
4798 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4799 | break; | |
4800 | ||
4801 | default: | |
3e43a32a MS |
4802 | warning (_("unrecognized item \"%s\" " |
4803 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4804 | continue; |
4805 | } | |
4806 | end[-1] = '\0'; | |
4807 | } | |
4808 | ||
4809 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4810 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4811 | { | |
4812 | const struct protocol_feature *feature; | |
4813 | ||
4814 | seen[i] = 1; | |
4815 | feature = &remote_protocol_features[i]; | |
4816 | feature->func (feature, is_supported, value); | |
4817 | break; | |
4818 | } | |
4819 | } | |
4820 | ||
4821 | /* If we increased the packet size, make sure to increase the global | |
4822 | buffer size also. We delay this until after parsing the entire | |
4823 | qSupported packet, because this is the same buffer we were | |
4824 | parsing. */ | |
4825 | if (rs->buf_size < rs->explicit_packet_size) | |
4826 | { | |
4827 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4828 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4829 | } |
4830 | ||
4831 | /* Handle the defaults for unmentioned features. */ | |
4832 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4833 | if (!seen[i]) | |
4834 | { | |
4835 | const struct protocol_feature *feature; | |
4836 | ||
4837 | feature = &remote_protocol_features[i]; | |
4838 | feature->func (feature, feature->default_support, NULL); | |
4839 | } | |
4840 | } | |
4841 | ||
78a095c3 JK |
4842 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4843 | on it so remove them first. */ | |
4844 | ||
4845 | static void | |
4846 | remote_unpush_target (void) | |
4847 | { | |
915ef8b1 | 4848 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 4849 | } |
be2a5f71 | 4850 | |
c906108c | 4851 | static void |
014f9477 | 4852 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4853 | struct target_ops *target, int extended_p) |
c906108c | 4854 | { |
d01949b6 | 4855 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4856 | |
c906108c | 4857 | if (name == 0) |
8a3fe4f8 | 4858 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4859 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4860 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4861 | |
23860348 | 4862 | /* See FIXME above. */ |
c6ebd6cf | 4863 | if (!target_async_permitted) |
92d1e331 | 4864 | wait_forever_enabled_p = 1; |
6426a772 | 4865 | |
2d717e4f | 4866 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4867 | Ask this question first, before target_preopen has a chance to kill |
4868 | anything. */ | |
5d93a237 | 4869 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4870 | { |
78a095c3 JK |
4871 | if (from_tty |
4872 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4873 | error (_("Still connected.")); |
4874 | } | |
4875 | ||
78a095c3 | 4876 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4877 | target_preopen (from_tty); |
4878 | ||
89be2091 | 4879 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4880 | xfree (rs->last_pass_packet); |
4881 | rs->last_pass_packet = NULL; | |
89be2091 | 4882 | |
9b224c5e PA |
4883 | /* Make sure we send the program signals list the next time we |
4884 | resume. */ | |
5e4a05c4 TT |
4885 | xfree (rs->last_program_signals_packet); |
4886 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4887 | |
ad9a8f3f | 4888 | remote_fileio_reset (); |
1dd41f16 NS |
4889 | reopen_exec_file (); |
4890 | reread_symbols (); | |
4891 | ||
5d93a237 TT |
4892 | rs->remote_desc = remote_serial_open (name); |
4893 | if (!rs->remote_desc) | |
c906108c SS |
4894 | perror_with_name (name); |
4895 | ||
4896 | if (baud_rate != -1) | |
4897 | { | |
5d93a237 | 4898 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4899 | { |
9b74d5d3 KB |
4900 | /* The requested speed could not be set. Error out to |
4901 | top level after closing remote_desc. Take care to | |
4902 | set remote_desc to NULL to avoid closing remote_desc | |
4903 | more than once. */ | |
5d93a237 TT |
4904 | serial_close (rs->remote_desc); |
4905 | rs->remote_desc = NULL; | |
c906108c SS |
4906 | perror_with_name (name); |
4907 | } | |
4908 | } | |
4909 | ||
236af5e3 | 4910 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4911 | serial_raw (rs->remote_desc); |
c906108c SS |
4912 | |
4913 | /* If there is something sitting in the buffer we might take it as a | |
4914 | response to a command, which would be bad. */ | |
5d93a237 | 4915 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4916 | |
4917 | if (from_tty) | |
4918 | { | |
4919 | puts_filtered ("Remote debugging using "); | |
4920 | puts_filtered (name); | |
4921 | puts_filtered ("\n"); | |
4922 | } | |
23860348 | 4923 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4924 | |
74531fed PA |
4925 | /* Register extra event sources in the event loop. */ |
4926 | remote_async_inferior_event_token | |
4927 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4928 | NULL); | |
5965e028 | 4929 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4930 | |
be2a5f71 DJ |
4931 | /* Reset the target state; these things will be queried either by |
4932 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4933 | reset_all_packet_configs_support (); |
74531fed | 4934 | rs->cached_wait_status = 0; |
be2a5f71 | 4935 | rs->explicit_packet_size = 0; |
a6f3e723 | 4936 | rs->noack_mode = 0; |
82f73884 | 4937 | rs->extended = extended_p; |
e24a49d8 | 4938 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4939 | rs->ctrlc_pending_p = 0; |
802188a7 | 4940 | |
47f8a51d TT |
4941 | rs->general_thread = not_sent_ptid; |
4942 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4943 | rs->remote_traceframe_number = -1; |
c906108c | 4944 | |
9d1f7ab2 | 4945 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4946 | rs->use_threadinfo_query = 1; |
4947 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4948 | |
80152258 PA |
4949 | readahead_cache_invalidate (); |
4950 | ||
c6ebd6cf | 4951 | if (target_async_permitted) |
92d1e331 | 4952 | { |
23860348 | 4953 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4954 | remote_async_terminal_ours_p = 1; |
4955 | ||
4956 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4957 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4958 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4959 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4960 | around this. Eventually a mechanism that allows |
92d1e331 | 4961 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4962 | implemented. */ |
92d1e331 DJ |
4963 | wait_forever_enabled_p = 0; |
4964 | } | |
4965 | ||
23860348 | 4966 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4967 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4968 | |
74531fed PA |
4969 | /* Start afresh. */ |
4970 | init_thread_list (); | |
4971 | ||
36918e70 | 4972 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4973 | target (we'd otherwise be in an inconsistent state) and then |
4974 | propogate the error on up the exception chain. This ensures that | |
4975 | the caller doesn't stumble along blindly assuming that the | |
4976 | function succeeded. The CLI doesn't have this problem but other | |
4977 | UI's, such as MI do. | |
36918e70 AC |
4978 | |
4979 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4980 | this function should return an error indication letting the | |
ce2826aa | 4981 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4982 | ``target remote'' is directly wired to this function making that |
4983 | impossible. On a positive note, the CLI side of this problem has | |
4984 | been fixed - the function set_cmd_context() makes it possible for | |
4985 | all the ``target ....'' commands to share a common callback | |
4986 | function. See cli-dump.c. */ | |
109c3e39 | 4987 | { |
2d717e4f | 4988 | |
492d29ea | 4989 | TRY |
04bd08de TT |
4990 | { |
4991 | remote_start_remote (from_tty, target, extended_p); | |
4992 | } | |
492d29ea | 4993 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4994 | { |
c8d104ad PA |
4995 | /* Pop the partially set up target - unless something else did |
4996 | already before throwing the exception. */ | |
5d93a237 | 4997 | if (rs->remote_desc != NULL) |
78a095c3 | 4998 | remote_unpush_target (); |
c6ebd6cf | 4999 | if (target_async_permitted) |
109c3e39 AC |
5000 | wait_forever_enabled_p = 1; |
5001 | throw_exception (ex); | |
5002 | } | |
492d29ea | 5003 | END_CATCH |
109c3e39 | 5004 | } |
c906108c | 5005 | |
f4abbc16 MM |
5006 | remote_btrace_reset (); |
5007 | ||
c6ebd6cf | 5008 | if (target_async_permitted) |
92d1e331 | 5009 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
5010 | } |
5011 | ||
de0d863e DB |
5012 | /* Detach the specified process. */ |
5013 | ||
5014 | static void | |
5015 | remote_detach_pid (int pid) | |
5016 | { | |
5017 | struct remote_state *rs = get_remote_state (); | |
5018 | ||
5019 | if (remote_multi_process_p (rs)) | |
5020 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
5021 | else | |
5022 | strcpy (rs->buf, "D"); | |
5023 | ||
5024 | putpkt (rs->buf); | |
5025 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5026 | ||
5027 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5028 | ; | |
5029 | else if (rs->buf[0] == '\0') | |
5030 | error (_("Remote doesn't know how to detach")); | |
5031 | else | |
5032 | error (_("Can't detach process.")); | |
5033 | } | |
5034 | ||
5035 | /* This detaches a program to which we previously attached, using | |
5036 | inferior_ptid to identify the process. After this is done, GDB | |
5037 | can be used to debug some other program. We better not have left | |
5038 | any breakpoints in the target program or it'll die when it hits | |
5039 | one. */ | |
c906108c SS |
5040 | |
5041 | static void | |
de0d863e | 5042 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 5043 | { |
82f73884 | 5044 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 5045 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
5046 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5047 | int is_fork_parent; | |
c906108c SS |
5048 | |
5049 | if (args) | |
8a3fe4f8 | 5050 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 5051 | |
2d717e4f DJ |
5052 | if (!target_has_execution) |
5053 | error (_("No process to detach from.")); | |
5054 | ||
7cee1e54 PA |
5055 | if (from_tty) |
5056 | { | |
5057 | char *exec_file = get_exec_file (0); | |
5058 | if (exec_file == NULL) | |
5059 | exec_file = ""; | |
5060 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
5061 | target_pid_to_str (pid_to_ptid (pid))); | |
5062 | gdb_flush (gdb_stdout); | |
5063 | } | |
5064 | ||
c906108c | 5065 | /* Tell the remote target to detach. */ |
de0d863e | 5066 | remote_detach_pid (pid); |
82f73884 | 5067 | |
8020350c DB |
5068 | /* Exit only if this is the only active inferior. */ |
5069 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5070 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5071 | |
de0d863e DB |
5072 | /* Check to see if we are detaching a fork parent. Note that if we |
5073 | are detaching a fork child, tp == NULL. */ | |
5074 | is_fork_parent = (tp != NULL | |
5075 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5076 | ||
5077 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5078 | breakpoints that should be available for the followed inferior. */ | |
5079 | if (!is_fork_parent) | |
5080 | target_mourn_inferior (); | |
5081 | else | |
5082 | { | |
5083 | inferior_ptid = null_ptid; | |
5084 | detach_inferior (pid); | |
5085 | } | |
2d717e4f DJ |
5086 | } |
5087 | ||
5088 | static void | |
52554a0e | 5089 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5090 | { |
de0d863e | 5091 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
5092 | } |
5093 | ||
5094 | static void | |
52554a0e | 5095 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 5096 | { |
de0d863e DB |
5097 | remote_detach_1 (args, from_tty); |
5098 | } | |
5099 | ||
5100 | /* Target follow-fork function for remote targets. On entry, and | |
5101 | at return, the current inferior is the fork parent. | |
5102 | ||
5103 | Note that although this is currently only used for extended-remote, | |
5104 | it is named remote_follow_fork in anticipation of using it for the | |
5105 | remote target as well. */ | |
5106 | ||
5107 | static int | |
5108 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
5109 | int detach_fork) | |
5110 | { | |
5111 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5112 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5113 | |
c269dbdb DB |
5114 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5115 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5116 | { |
5117 | /* When following the parent and detaching the child, we detach | |
5118 | the child here. For the case of following the child and | |
5119 | detaching the parent, the detach is done in the target- | |
5120 | independent follow fork code in infrun.c. We can't use | |
5121 | target_detach when detaching an unfollowed child because | |
5122 | the client side doesn't know anything about the child. */ | |
5123 | if (detach_fork && !follow_child) | |
5124 | { | |
5125 | /* Detach the fork child. */ | |
5126 | ptid_t child_ptid; | |
5127 | pid_t child_pid; | |
5128 | ||
5129 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
5130 | child_pid = ptid_get_pid (child_ptid); | |
5131 | ||
5132 | remote_detach_pid (child_pid); | |
5133 | detach_inferior (child_pid); | |
5134 | } | |
5135 | } | |
5136 | return 0; | |
c906108c SS |
5137 | } |
5138 | ||
94585166 DB |
5139 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5140 | in the program space of the new inferior. On entry and at return the | |
5141 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5142 | inferior, which may be the same as the exec'ing inferior unless | |
5143 | follow-exec-mode is "new". */ | |
5144 | ||
5145 | static void | |
5146 | remote_follow_exec (struct target_ops *ops, | |
5147 | struct inferior *inf, char *execd_pathname) | |
5148 | { | |
5149 | /* We know that this is a target file name, so if it has the "target:" | |
5150 | prefix we strip it off before saving it in the program space. */ | |
5151 | if (is_target_filename (execd_pathname)) | |
5152 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5153 | ||
5154 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5155 | } | |
5156 | ||
6ad8ae5c DJ |
5157 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5158 | ||
43ff13b4 | 5159 | static void |
fee354ee | 5160 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 5161 | { |
43ff13b4 | 5162 | if (args) |
2d717e4f | 5163 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5164 | |
8020350c DB |
5165 | /* Make sure we unpush even the extended remote targets. Calling |
5166 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5167 | unpush if there is more than one inferior left. */ | |
5168 | unpush_target (target); | |
5169 | generic_mourn_inferior (); | |
2d717e4f | 5170 | |
43ff13b4 JM |
5171 | if (from_tty) |
5172 | puts_filtered ("Ending remote debugging.\n"); | |
5173 | } | |
5174 | ||
2d717e4f DJ |
5175 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5176 | be chatty about it. */ | |
5177 | ||
5178 | static void | |
20f796c9 GB |
5179 | extended_remote_attach (struct target_ops *target, const char *args, |
5180 | int from_tty) | |
2d717e4f DJ |
5181 | { |
5182 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5183 | int pid; |
96ef3384 | 5184 | char *wait_status = NULL; |
2d717e4f | 5185 | |
74164c56 | 5186 | pid = parse_pid_to_attach (args); |
2d717e4f | 5187 | |
74164c56 JK |
5188 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5189 | way as in other targets. */ | |
2d717e4f | 5190 | |
4082afcc | 5191 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5192 | error (_("This target does not support attaching to a process")); |
5193 | ||
7cee1e54 PA |
5194 | if (from_tty) |
5195 | { | |
5196 | char *exec_file = get_exec_file (0); | |
5197 | ||
5198 | if (exec_file) | |
5199 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
5200 | target_pid_to_str (pid_to_ptid (pid))); | |
5201 | else | |
5202 | printf_unfiltered (_("Attaching to %s\n"), | |
5203 | target_pid_to_str (pid_to_ptid (pid))); | |
5204 | ||
5205 | gdb_flush (gdb_stdout); | |
5206 | } | |
5207 | ||
bba74b36 | 5208 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
5209 | putpkt (rs->buf); |
5210 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5211 | ||
4082afcc PA |
5212 | switch (packet_ok (rs->buf, |
5213 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5214 | { |
4082afcc | 5215 | case PACKET_OK: |
6efcd9a8 | 5216 | if (!target_is_non_stop_p ()) |
74531fed PA |
5217 | { |
5218 | /* Save the reply for later. */ | |
224c3ddb | 5219 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
5220 | strcpy (wait_status, rs->buf); |
5221 | } | |
5222 | else if (strcmp (rs->buf, "OK") != 0) | |
5223 | error (_("Attaching to %s failed with: %s"), | |
5224 | target_pid_to_str (pid_to_ptid (pid)), | |
5225 | rs->buf); | |
4082afcc PA |
5226 | break; |
5227 | case PACKET_UNKNOWN: | |
5228 | error (_("This target does not support attaching to a process")); | |
5229 | default: | |
5230 | error (_("Attaching to %s failed"), | |
5231 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 5232 | } |
2d717e4f | 5233 | |
1b6e6f5c | 5234 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 5235 | |
2d717e4f | 5236 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 5237 | |
6efcd9a8 | 5238 | if (target_is_non_stop_p ()) |
bad34192 PA |
5239 | { |
5240 | struct thread_info *thread; | |
79d7f229 | 5241 | |
bad34192 | 5242 | /* Get list of threads. */ |
e8032dde | 5243 | remote_update_thread_list (target); |
82f73884 | 5244 | |
bad34192 PA |
5245 | thread = first_thread_of_process (pid); |
5246 | if (thread) | |
5247 | inferior_ptid = thread->ptid; | |
5248 | else | |
5249 | inferior_ptid = pid_to_ptid (pid); | |
5250 | ||
5251 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5252 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5253 | } |
74531fed | 5254 | else |
bad34192 PA |
5255 | { |
5256 | /* Now, if we have thread information, update inferior_ptid. */ | |
5257 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5258 | ||
5259 | /* Add the main thread to the thread list. */ | |
5260 | add_thread_silent (inferior_ptid); | |
5261 | } | |
c0a2216e | 5262 | |
96ef3384 UW |
5263 | /* Next, if the target can specify a description, read it. We do |
5264 | this before anything involving memory or registers. */ | |
5265 | target_find_description (); | |
5266 | ||
6efcd9a8 | 5267 | if (!target_is_non_stop_p ()) |
74531fed PA |
5268 | { |
5269 | /* Use the previously fetched status. */ | |
5270 | gdb_assert (wait_status != NULL); | |
5271 | ||
5272 | if (target_can_async_p ()) | |
5273 | { | |
722247f1 YQ |
5274 | struct notif_event *reply |
5275 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5276 | |
722247f1 | 5277 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5278 | |
6a3753b3 | 5279 | target_async (1); |
74531fed PA |
5280 | } |
5281 | else | |
5282 | { | |
5283 | gdb_assert (wait_status != NULL); | |
5284 | strcpy (rs->buf, wait_status); | |
5285 | rs->cached_wait_status = 1; | |
5286 | } | |
5287 | } | |
5288 | else | |
5289 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5290 | } |
5291 | ||
b9c1d481 AS |
5292 | /* Implementation of the to_post_attach method. */ |
5293 | ||
5294 | static void | |
5295 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5296 | { | |
6efcd9a8 PA |
5297 | /* Get text, data & bss offsets. */ |
5298 | get_offsets (); | |
5299 | ||
b9c1d481 AS |
5300 | /* In certain cases GDB might not have had the chance to start |
5301 | symbol lookup up until now. This could happen if the debugged | |
5302 | binary is not using shared libraries, the vsyscall page is not | |
5303 | present (on Linux) and the binary itself hadn't changed since the | |
5304 | debugging process was started. */ | |
5305 | if (symfile_objfile != NULL) | |
5306 | remote_check_symbols(); | |
5307 | } | |
5308 | ||
c906108c | 5309 | \f |
506fb367 DJ |
5310 | /* Check for the availability of vCont. This function should also check |
5311 | the response. */ | |
c906108c SS |
5312 | |
5313 | static void | |
6d820c5c | 5314 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5315 | { |
2e9f7625 | 5316 | char *buf; |
6d820c5c | 5317 | |
2e9f7625 DJ |
5318 | strcpy (rs->buf, "vCont?"); |
5319 | putpkt (rs->buf); | |
6d820c5c | 5320 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5321 | buf = rs->buf; |
c906108c | 5322 | |
506fb367 | 5323 | /* Make sure that the features we assume are supported. */ |
61012eef | 5324 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5325 | { |
5326 | char *p = &buf[5]; | |
750ce8d1 | 5327 | int support_c, support_C; |
506fb367 | 5328 | |
750ce8d1 YQ |
5329 | rs->supports_vCont.s = 0; |
5330 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5331 | support_c = 0; |
5332 | support_C = 0; | |
d458bd84 | 5333 | rs->supports_vCont.t = 0; |
c1e36e3e | 5334 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5335 | while (p && *p == ';') |
5336 | { | |
5337 | p++; | |
5338 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5339 | rs->supports_vCont.s = 1; |
506fb367 | 5340 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5341 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5342 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5343 | support_c = 1; | |
5344 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5345 | support_C = 1; | |
74531fed | 5346 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5347 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5348 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5349 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5350 | |
5351 | p = strchr (p, ';'); | |
5352 | } | |
c906108c | 5353 | |
750ce8d1 YQ |
5354 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5355 | BUF will make packet_ok disable the packet. */ | |
5356 | if (!support_c || !support_C) | |
506fb367 DJ |
5357 | buf[0] = 0; |
5358 | } | |
c906108c | 5359 | |
444abaca | 5360 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5361 | } |
c906108c | 5362 | |
0d8f58ca PA |
5363 | /* Helper function for building "vCont" resumptions. Write a |
5364 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5365 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5366 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5367 | resumed thread should be single-stepped and/or signalled. If PTID | |
5368 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5369 | represents a process, then all threads of the process are resumed; | |
5370 | the thread to be stepped and/or signalled is given in the global | |
5371 | INFERIOR_PTID. */ | |
5372 | ||
5373 | static char * | |
5374 | append_resumption (char *p, char *endp, | |
2ea28649 | 5375 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5376 | { |
5377 | struct remote_state *rs = get_remote_state (); | |
5378 | ||
a493e3e2 | 5379 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5380 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5381 | else if (step |
5382 | /* GDB is willing to range step. */ | |
5383 | && use_range_stepping | |
5384 | /* Target supports range stepping. */ | |
5385 | && rs->supports_vCont.r | |
5386 | /* We don't currently support range stepping multiple | |
5387 | threads with a wildcard (though the protocol allows it, | |
5388 | so stubs shouldn't make an active effort to forbid | |
5389 | it). */ | |
5390 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5391 | { | |
5392 | struct thread_info *tp; | |
5393 | ||
5394 | if (ptid_equal (ptid, minus_one_ptid)) | |
5395 | { | |
5396 | /* If we don't know about the target thread's tid, then | |
5397 | we're resuming magic_null_ptid (see caller). */ | |
5398 | tp = find_thread_ptid (magic_null_ptid); | |
5399 | } | |
5400 | else | |
5401 | tp = find_thread_ptid (ptid); | |
5402 | gdb_assert (tp != NULL); | |
5403 | ||
5404 | if (tp->control.may_range_step) | |
5405 | { | |
5406 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5407 | ||
5408 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5409 | phex_nz (tp->control.step_range_start, | |
5410 | addr_size), | |
5411 | phex_nz (tp->control.step_range_end, | |
5412 | addr_size)); | |
5413 | } | |
5414 | else | |
5415 | p += xsnprintf (p, endp - p, ";s"); | |
5416 | } | |
0d8f58ca PA |
5417 | else if (step) |
5418 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5419 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5420 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5421 | else | |
5422 | p += xsnprintf (p, endp - p, ";c"); | |
5423 | ||
5424 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5425 | { | |
5426 | ptid_t nptid; | |
5427 | ||
5428 | /* All (-1) threads of process. */ | |
ba348170 | 5429 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5430 | |
5431 | p += xsnprintf (p, endp - p, ":"); | |
5432 | p = write_ptid (p, endp, nptid); | |
5433 | } | |
5434 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5435 | { | |
5436 | p += xsnprintf (p, endp - p, ":"); | |
5437 | p = write_ptid (p, endp, ptid); | |
5438 | } | |
5439 | ||
5440 | return p; | |
5441 | } | |
5442 | ||
799a2abe PA |
5443 | /* Clear the thread's private info on resume. */ |
5444 | ||
5445 | static void | |
5446 | resume_clear_thread_private_info (struct thread_info *thread) | |
5447 | { | |
5448 | if (thread->priv != NULL) | |
5449 | { | |
5450 | thread->priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
5451 | thread->priv->watch_data_address = 0; | |
5452 | } | |
5453 | } | |
5454 | ||
e5ef252a PA |
5455 | /* Append a vCont continue-with-signal action for threads that have a |
5456 | non-zero stop signal. */ | |
5457 | ||
5458 | static char * | |
5459 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5460 | { | |
5461 | struct thread_info *thread; | |
5462 | ||
034f788c | 5463 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5464 | if (ptid_match (thread->ptid, ptid) |
5465 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5466 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5467 | { |
5468 | p = append_resumption (p, endp, thread->ptid, | |
5469 | 0, thread->suspend.stop_signal); | |
5470 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 5471 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
5472 | } |
5473 | ||
5474 | return p; | |
5475 | } | |
5476 | ||
506fb367 DJ |
5477 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5478 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5479 | resumed thread should be single-stepped and/or signalled. If PTID |
5480 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5481 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5482 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5483 | |
506fb367 DJ |
5484 | This function issues a strict subset of all possible vCont commands at the |
5485 | moment. */ | |
44eaed12 | 5486 | |
506fb367 | 5487 | static int |
2ea28649 | 5488 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5489 | { |
5490 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5491 | char *p; |
5492 | char *endp; | |
44eaed12 | 5493 | |
4082afcc | 5494 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5495 | remote_vcont_probe (rs); |
44eaed12 | 5496 | |
4082afcc | 5497 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5498 | return 0; |
44eaed12 | 5499 | |
82f73884 PA |
5500 | p = rs->buf; |
5501 | endp = rs->buf + get_remote_packet_size (); | |
5502 | ||
506fb367 DJ |
5503 | /* If we could generate a wider range of packets, we'd have to worry |
5504 | about overflowing BUF. Should there be a generic | |
5505 | "multi-part-packet" packet? */ | |
5506 | ||
0d8f58ca PA |
5507 | p += xsnprintf (p, endp - p, "vCont"); |
5508 | ||
79d7f229 | 5509 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5510 | { |
79d7f229 PA |
5511 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5512 | so we don't have any TID numbers the inferior will | |
5513 | understand. Make sure to only send forms that do not specify | |
5514 | a TID. */ | |
a9cbf802 | 5515 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5516 | } |
0d8f58ca | 5517 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5518 | { |
0d8f58ca PA |
5519 | /* Resume all threads (of all processes, or of a single |
5520 | process), with preference for INFERIOR_PTID. This assumes | |
5521 | inferior_ptid belongs to the set of all threads we are about | |
5522 | to resume. */ | |
a493e3e2 | 5523 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5524 | { |
0d8f58ca PA |
5525 | /* Step inferior_ptid, with or without signal. */ |
5526 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5527 | } |
0d8f58ca | 5528 | |
e5ef252a PA |
5529 | /* Also pass down any pending signaled resumption for other |
5530 | threads not the current. */ | |
5531 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5532 | ||
0d8f58ca | 5533 | /* And continue others without a signal. */ |
a493e3e2 | 5534 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5535 | } |
5536 | else | |
506fb367 DJ |
5537 | { |
5538 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5539 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5540 | } |
c906108c | 5541 | |
82f73884 PA |
5542 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5543 | putpkt (rs->buf); | |
506fb367 | 5544 | |
6efcd9a8 | 5545 | if (target_is_non_stop_p ()) |
74531fed PA |
5546 | { |
5547 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5548 | reply will be reported asynchronously by means of a `%Stop' | |
5549 | notification. */ | |
5550 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5551 | if (strcmp (rs->buf, "OK") != 0) | |
5552 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5553 | } | |
5554 | ||
506fb367 | 5555 | return 1; |
c906108c | 5556 | } |
43ff13b4 | 5557 | |
506fb367 DJ |
5558 | /* Tell the remote machine to resume. */ |
5559 | ||
43ff13b4 | 5560 | static void |
28439f5e | 5561 | remote_resume (struct target_ops *ops, |
2ea28649 | 5562 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5563 | { |
d01949b6 | 5564 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5565 | char *buf; |
799a2abe | 5566 | struct thread_info *thread; |
43ff13b4 | 5567 | |
722247f1 YQ |
5568 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5569 | (explained in remote-notif.c:handle_notification) so | |
5570 | remote_notif_process is not called. We need find a place where | |
5571 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5572 | before resuming inferior, because inferior was stopped and no RSP | |
5573 | traffic at that moment. */ | |
6efcd9a8 | 5574 | if (!target_is_non_stop_p ()) |
5965e028 | 5575 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5576 | |
b73be471 | 5577 | rs->last_sent_signal = siggnal; |
280ceea3 | 5578 | rs->last_sent_step = step; |
43ff13b4 | 5579 | |
506fb367 | 5580 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5581 | /* No reverse support (yet) for vCont. */ |
5582 | if (execution_direction != EXEC_REVERSE) | |
5583 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5584 | goto done; | |
506fb367 | 5585 | |
79d7f229 PA |
5586 | /* All other supported resume packets do use Hc, so set the continue |
5587 | thread. */ | |
5588 | if (ptid_equal (ptid, minus_one_ptid)) | |
5589 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5590 | else |
79d7f229 | 5591 | set_continue_thread (ptid); |
506fb367 | 5592 | |
799a2abe PA |
5593 | ALL_NON_EXITED_THREADS (thread) |
5594 | resume_clear_thread_private_info (thread); | |
5595 | ||
2e9f7625 | 5596 | buf = rs->buf; |
b2175913 MS |
5597 | if (execution_direction == EXEC_REVERSE) |
5598 | { | |
5599 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5600 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5601 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5602 | siggnal); |
40ab02ce | 5603 | |
4082afcc | 5604 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5605 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5606 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5607 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5608 | |
b2175913 MS |
5609 | strcpy (buf, step ? "bs" : "bc"); |
5610 | } | |
a493e3e2 | 5611 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5612 | { |
5613 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5614 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5615 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5616 | buf[3] = '\0'; |
5617 | } | |
5618 | else | |
c5aa993b | 5619 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5620 | |
44eaed12 | 5621 | putpkt (buf); |
43ff13b4 | 5622 | |
75c99385 | 5623 | done: |
2acceee2 | 5624 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5625 | with the event loop. NOTE: this is the one place where all the |
5626 | execution commands end up. We could alternatively do this in each | |
23860348 | 5627 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5628 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5629 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5630 | NOT asynchronously. */ |
362646f5 | 5631 | if (target_can_async_p ()) |
6a3753b3 | 5632 | target_async (1); |
e24a49d8 PA |
5633 | |
5634 | /* We've just told the target to resume. The remote server will | |
5635 | wait for the inferior to stop, and then send a stop reply. In | |
5636 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5637 | because the stub wouldn't be ready to process it. This applies |
5638 | only to the base all-stop protocol, however. In non-stop (which | |
5639 | only supports vCont), the stub replies with an "OK", and is | |
5640 | immediate able to process further serial input. */ | |
6efcd9a8 | 5641 | if (!target_is_non_stop_p ()) |
74531fed | 5642 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 5643 | } |
c906108c | 5644 | \f |
43ff13b4 JM |
5645 | |
5646 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5647 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5648 | static void |
934b9bac | 5649 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5650 | { |
934b9bac | 5651 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5652 | } |
5653 | ||
23860348 | 5654 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5655 | static void |
934b9bac | 5656 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5657 | { |
934b9bac | 5658 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5659 | /* Note we need to go through gdb_call_async_signal_handler in order |
5660 | to wake up the event loop on Windows. */ | |
5661 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5662 | } |
5663 | ||
5664 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5665 | sent once. It will take effect the second time that the user sends | |
23860348 | 5666 | a ^C. */ |
43ff13b4 | 5667 | static void |
934b9bac | 5668 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5669 | { |
934b9bac | 5670 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5671 | /* See note in async_handle_remote_sigint. */ |
5672 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5673 | } |
5674 | ||
abc56d60 PA |
5675 | /* Implementation of to_check_pending_interrupt. */ |
5676 | ||
5677 | static void | |
5678 | remote_check_pending_interrupt (struct target_ops *self) | |
5679 | { | |
5680 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5681 | ||
5682 | if (async_signal_handler_is_marked (token)) | |
5683 | { | |
5684 | clear_async_signal_handler (token); | |
5685 | call_async_signal_handler (token); | |
5686 | } | |
5687 | } | |
5688 | ||
6426a772 | 5689 | /* Perform the real interruption of the target execution, in response |
23860348 | 5690 | to a ^C. */ |
c5aa993b | 5691 | static void |
fba45db2 | 5692 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5693 | { |
5694 | if (remote_debug) | |
248fd3bf | 5695 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5696 | |
de979965 | 5697 | target_interrupt (inferior_ptid); |
43ff13b4 JM |
5698 | } |
5699 | ||
0df8b418 | 5700 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5701 | up on the target alltogether. */ |
47e1ce27 | 5702 | static void |
fba45db2 | 5703 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5704 | { |
2df3850c | 5705 | if (remote_debug) |
248fd3bf | 5706 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5707 | |
5708 | interrupt_query (); | |
43ff13b4 JM |
5709 | } |
5710 | ||
5711 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5712 | stopped. */ |
6426a772 | 5713 | static void |
934b9bac | 5714 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5715 | { |
5716 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5717 | } |
5718 | ||
c906108c SS |
5719 | /* Send ^C to target to halt it. Target will respond, and send us a |
5720 | packet. */ | |
507f3c78 | 5721 | static void (*ofunc) (int); |
c906108c | 5722 | |
bfedc46a PA |
5723 | /* The command line interface's interrupt routine. This function is installed |
5724 | as a signal handler for SIGINT. The first time a user requests an | |
5725 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5726 | response from the target (it didn't stop when the user requested it), |
23860348 | 5727 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5728 | |
c906108c | 5729 | static void |
934b9bac | 5730 | sync_remote_interrupt (int signo) |
c906108c | 5731 | { |
23860348 | 5732 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5733 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5734 | |
934b9bac | 5735 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5736 | } |
5737 | ||
5738 | /* The user typed ^C twice. */ | |
5739 | ||
5740 | static void | |
934b9bac | 5741 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5742 | { |
5743 | signal (signo, ofunc); | |
934b9bac JK |
5744 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5745 | signal (signo, sync_remote_interrupt); | |
c906108c | 5746 | } |
7a292a7a | 5747 | |
74531fed PA |
5748 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5749 | thread, all threads of a remote process, or all threads of all | |
5750 | processes. */ | |
5751 | ||
5752 | static void | |
5753 | remote_stop_ns (ptid_t ptid) | |
5754 | { | |
5755 | struct remote_state *rs = get_remote_state (); | |
5756 | char *p = rs->buf; | |
5757 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5758 | |
4082afcc | 5759 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5760 | remote_vcont_probe (rs); |
5761 | ||
d458bd84 | 5762 | if (!rs->supports_vCont.t) |
74531fed PA |
5763 | error (_("Remote server does not support stopping threads")); |
5764 | ||
f91d3df5 PA |
5765 | if (ptid_equal (ptid, minus_one_ptid) |
5766 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5767 | p += xsnprintf (p, endp - p, "vCont;t"); |
5768 | else | |
5769 | { | |
5770 | ptid_t nptid; | |
5771 | ||
74531fed PA |
5772 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5773 | ||
5774 | if (ptid_is_pid (ptid)) | |
5775 | /* All (-1) threads of process. */ | |
ba348170 | 5776 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5777 | else |
5778 | { | |
5779 | /* Small optimization: if we already have a stop reply for | |
5780 | this thread, no use in telling the stub we want this | |
5781 | stopped. */ | |
5782 | if (peek_stop_reply (ptid)) | |
5783 | return; | |
5784 | ||
5785 | nptid = ptid; | |
5786 | } | |
5787 | ||
a9cbf802 | 5788 | write_ptid (p, endp, nptid); |
74531fed PA |
5789 | } |
5790 | ||
5791 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5792 | come in asynchronously by notification. */ | |
5793 | putpkt (rs->buf); | |
5794 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5795 | if (strcmp (rs->buf, "OK") != 0) | |
5796 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5797 | } | |
5798 | ||
bfedc46a PA |
5799 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5800 | interrupt the remote target. It is undefined which thread of which | |
5801 | process reports the interrupt. */ | |
74531fed PA |
5802 | |
5803 | static void | |
de979965 | 5804 | remote_interrupt_as (void) |
74531fed PA |
5805 | { |
5806 | struct remote_state *rs = get_remote_state (); | |
5807 | ||
3a29589a DJ |
5808 | rs->ctrlc_pending_p = 1; |
5809 | ||
74531fed PA |
5810 | /* If the inferior is stopped already, but the core didn't know |
5811 | about it yet, just ignore the request. The cached wait status | |
5812 | will be collected in remote_wait. */ | |
5813 | if (rs->cached_wait_status) | |
5814 | return; | |
5815 | ||
9a7071a8 JB |
5816 | /* Send interrupt_sequence to remote target. */ |
5817 | send_interrupt_sequence (); | |
74531fed PA |
5818 | } |
5819 | ||
de979965 PA |
5820 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
5821 | the remote target. It is undefined which thread of which process | |
5822 | reports the interrupt. Returns true if the packet is supported by | |
5823 | the server, false otherwise. */ | |
5824 | ||
5825 | static int | |
5826 | remote_interrupt_ns (void) | |
5827 | { | |
5828 | struct remote_state *rs = get_remote_state (); | |
5829 | char *p = rs->buf; | |
5830 | char *endp = rs->buf + get_remote_packet_size (); | |
5831 | ||
5832 | xsnprintf (p, endp - p, "vCtrlC"); | |
5833 | ||
5834 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5835 | come in asynchronously by notification. */ | |
5836 | putpkt (rs->buf); | |
5837 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5838 | ||
5839 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
5840 | { | |
5841 | case PACKET_OK: | |
5842 | break; | |
5843 | case PACKET_UNKNOWN: | |
5844 | return 0; | |
5845 | case PACKET_ERROR: | |
5846 | error (_("Interrupting target failed: %s"), rs->buf); | |
5847 | } | |
5848 | ||
5849 | return 1; | |
5850 | } | |
5851 | ||
bfedc46a | 5852 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5853 | |
c906108c | 5854 | static void |
1eab8a48 | 5855 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5856 | { |
7a292a7a | 5857 | if (remote_debug) |
0f71a2f6 | 5858 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5859 | |
6efcd9a8 | 5860 | if (target_is_non_stop_p ()) |
74531fed | 5861 | remote_stop_ns (ptid); |
c906108c | 5862 | else |
bfedc46a PA |
5863 | { |
5864 | /* We don't currently have a way to transparently pause the | |
5865 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 5866 | remote_interrupt_as (); |
bfedc46a PA |
5867 | } |
5868 | } | |
5869 | ||
5870 | /* Implement the to_interrupt function for the remote targets. */ | |
5871 | ||
5872 | static void | |
5873 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5874 | { | |
5875 | if (remote_debug) | |
5876 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5877 | ||
de979965 | 5878 | if (non_stop) |
bfedc46a | 5879 | { |
de979965 | 5880 | /* In non-stop mode, we always stop with no signal instead. */ |
bfedc46a PA |
5881 | remote_stop_ns (ptid); |
5882 | } | |
5883 | else | |
de979965 PA |
5884 | { |
5885 | /* In all-stop, we emulate ^C-ing the remote target's | |
5886 | terminal. */ | |
5887 | if (target_is_non_stop_p ()) | |
5888 | { | |
5889 | if (!remote_interrupt_ns ()) | |
5890 | { | |
5891 | /* No support for ^C-ing the remote target. Stop it | |
5892 | (with no signal) instead. */ | |
5893 | remote_stop_ns (ptid); | |
5894 | } | |
5895 | } | |
5896 | else | |
5897 | remote_interrupt_as (); | |
5898 | } | |
c906108c SS |
5899 | } |
5900 | ||
5901 | /* Ask the user what to do when an interrupt is received. */ | |
5902 | ||
5903 | static void | |
fba45db2 | 5904 | interrupt_query (void) |
c906108c | 5905 | { |
abc56d60 PA |
5906 | struct remote_state *rs = get_remote_state (); |
5907 | struct cleanup *old_chain; | |
5908 | ||
5909 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5910 | target_terminal_ours (); |
5911 | ||
abc56d60 | 5912 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5913 | { |
abc56d60 PA |
5914 | if (query (_("The target is not responding to interrupt requests.\n" |
5915 | "Stop debugging it? "))) | |
74531fed | 5916 | { |
78a095c3 | 5917 | remote_unpush_target (); |
abc56d60 | 5918 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5919 | } |
5920 | } | |
abc56d60 PA |
5921 | else |
5922 | { | |
5923 | if (query (_("Interrupted while waiting for the program.\n" | |
5924 | "Give up waiting? "))) | |
5925 | quit (); | |
5926 | } | |
c906108c | 5927 | |
abc56d60 | 5928 | do_cleanups (old_chain); |
c906108c SS |
5929 | } |
5930 | ||
6426a772 JM |
5931 | /* Enable/disable target terminal ownership. Most targets can use |
5932 | terminal groups to control terminal ownership. Remote targets are | |
5933 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5934 | is required. */ |
6426a772 JM |
5935 | |
5936 | static void | |
d2f640d4 | 5937 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5938 | { |
c6ebd6cf | 5939 | if (!target_async_permitted) |
75c99385 PA |
5940 | /* Nothing to do. */ |
5941 | return; | |
5942 | ||
d9d2d8b6 PA |
5943 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5944 | idempotent. The event-loop GDB talking to an asynchronous target | |
5945 | with a synchronous command calls this function from both | |
5946 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5947 | transfer the terminal to the target when it shouldn't this guard | |
5948 | can go away. */ | |
6426a772 JM |
5949 | if (!remote_async_terminal_ours_p) |
5950 | return; | |
5951 | delete_file_handler (input_fd); | |
5952 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5953 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5954 | /* NOTE: At this point we could also register our selves as the |
5955 | recipient of all input. Any characters typed could then be | |
23860348 | 5956 | passed on down to the target. */ |
6426a772 JM |
5957 | } |
5958 | ||
5959 | static void | |
e3594fd1 | 5960 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5961 | { |
c6ebd6cf | 5962 | if (!target_async_permitted) |
75c99385 PA |
5963 | /* Nothing to do. */ |
5964 | return; | |
5965 | ||
5966 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5967 | if (remote_async_terminal_ours_p) |
5968 | return; | |
934b9bac | 5969 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5970 | add_file_handler (input_fd, stdin_event_handler, 0); |
5971 | remote_async_terminal_ours_p = 1; | |
5972 | } | |
5973 | ||
176a6961 | 5974 | static void |
917317f4 | 5975 | remote_console_output (char *msg) |
c906108c SS |
5976 | { |
5977 | char *p; | |
5978 | ||
c5aa993b | 5979 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5980 | { |
5981 | char tb[2]; | |
5982 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5983 | |
c906108c SS |
5984 | tb[0] = c; |
5985 | tb[1] = 0; | |
43ff13b4 | 5986 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5987 | } |
00db5b94 PA |
5988 | gdb_flush (gdb_stdtarg); |
5989 | } | |
74531fed PA |
5990 | |
5991 | typedef struct cached_reg | |
5992 | { | |
5993 | int num; | |
5994 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5995 | } cached_reg_t; | |
5996 | ||
5997 | DEF_VEC_O(cached_reg_t); | |
5998 | ||
722247f1 | 5999 | typedef struct stop_reply |
74531fed | 6000 | { |
722247f1 | 6001 | struct notif_event base; |
74531fed | 6002 | |
722247f1 | 6003 | /* The identifier of the thread about this event */ |
74531fed PA |
6004 | ptid_t ptid; |
6005 | ||
340e3c99 | 6006 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6007 | connection, represented by a remote_state object, is closed, |
6008 | all the associated stop_reply events should be released. */ | |
6009 | struct remote_state *rs; | |
6010 | ||
74531fed PA |
6011 | struct target_waitstatus ws; |
6012 | ||
15148d6a PA |
6013 | /* Expedited registers. This makes remote debugging a bit more |
6014 | efficient for those targets that provide critical registers as | |
6015 | part of their normal status mechanism (as another roundtrip to | |
6016 | fetch them is avoided). */ | |
74531fed PA |
6017 | VEC(cached_reg_t) *regcache; |
6018 | ||
f7e6eed5 PA |
6019 | enum target_stop_reason stop_reason; |
6020 | ||
74531fed PA |
6021 | CORE_ADDR watch_data_address; |
6022 | ||
dc146f7c | 6023 | int core; |
722247f1 | 6024 | } *stop_reply_p; |
a744cf53 | 6025 | |
722247f1 YQ |
6026 | DECLARE_QUEUE_P (stop_reply_p); |
6027 | DEFINE_QUEUE_P (stop_reply_p); | |
6028 | /* The list of already fetched and acknowledged stop events. This | |
6029 | queue is used for notification Stop, and other notifications | |
6030 | don't need queue for their events, because the notification events | |
6031 | of Stop can't be consumed immediately, so that events should be | |
6032 | queued first, and be consumed by remote_wait_{ns,as} one per | |
6033 | time. Other notifications can consume their events immediately, | |
6034 | so queue is not needed for them. */ | |
6035 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
6036 | |
6037 | static void | |
6038 | stop_reply_xfree (struct stop_reply *r) | |
6039 | { | |
f48ff2a7 | 6040 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
6041 | } |
6042 | ||
221e1a37 PA |
6043 | /* Return the length of the stop reply queue. */ |
6044 | ||
6045 | static int | |
6046 | stop_reply_queue_length (void) | |
6047 | { | |
6048 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
6049 | } | |
6050 | ||
722247f1 YQ |
6051 | static void |
6052 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
6053 | struct notif_event *event) | |
6054 | { | |
6055 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
6056 | } | |
6057 | ||
6058 | static void | |
6059 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
6060 | struct notif_event *event) | |
6061 | { | |
6062 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6063 | ||
6064 | /* acknowledge */ | |
6065 | putpkt ((char *) self->ack_command); | |
6066 | ||
6067 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6068 | /* We got an unknown stop reply. */ | |
6069 | error (_("Unknown stop reply")); | |
6070 | ||
6071 | push_stop_reply (stop_reply); | |
6072 | } | |
6073 | ||
6074 | static int | |
6075 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
6076 | { | |
6077 | /* We can't get pending events in remote_notif_process for | |
6078 | notification stop, and we have to do this in remote_wait_ns | |
6079 | instead. If we fetch all queued events from stub, remote stub | |
6080 | may exit and we have no chance to process them back in | |
6081 | remote_wait_ns. */ | |
6082 | mark_async_event_handler (remote_async_inferior_event_token); | |
6083 | return 0; | |
6084 | } | |
6085 | ||
6086 | static void | |
6087 | stop_reply_dtr (struct notif_event *event) | |
6088 | { | |
6089 | struct stop_reply *r = (struct stop_reply *) event; | |
6090 | ||
6091 | VEC_free (cached_reg_t, r->regcache); | |
6092 | } | |
6093 | ||
6094 | static struct notif_event * | |
6095 | remote_notif_stop_alloc_reply (void) | |
6096 | { | |
8d749320 SM |
6097 | /* We cast to a pointer to the "base class". */ |
6098 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
6099 | |
6100 | r->dtr = stop_reply_dtr; | |
6101 | ||
6102 | return r; | |
6103 | } | |
6104 | ||
6105 | /* A client of notification Stop. */ | |
6106 | ||
6107 | struct notif_client notif_client_stop = | |
6108 | { | |
6109 | "Stop", | |
6110 | "vStopped", | |
6111 | remote_notif_stop_parse, | |
6112 | remote_notif_stop_ack, | |
6113 | remote_notif_stop_can_get_pending_events, | |
6114 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6115 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6116 | }; |
6117 | ||
6118 | /* A parameter to pass data in and out. */ | |
6119 | ||
6120 | struct queue_iter_param | |
6121 | { | |
6122 | void *input; | |
6123 | struct stop_reply *output; | |
6124 | }; | |
6125 | ||
cbb8991c DB |
6126 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
6127 | the pid of the process that owns the threads we want to check, or | |
6128 | -1 if we want to check all threads. */ | |
6129 | ||
6130 | static int | |
6131 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6132 | ptid_t thread_ptid) | |
6133 | { | |
6134 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6135 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6136 | { | |
6137 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
6138 | return 1; | |
6139 | } | |
6140 | ||
6141 | return 0; | |
6142 | } | |
6143 | ||
6144 | /* Check whether EVENT is a fork event, and if it is, remove the | |
6145 | fork child from the context list passed in DATA. */ | |
6146 | ||
6147 | static int | |
6148 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
6149 | QUEUE_ITER (stop_reply_p) *iter, | |
6150 | stop_reply_p event, | |
6151 | void *data) | |
6152 | { | |
19ba03f4 SM |
6153 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6154 | struct threads_listing_context *context | |
6155 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
6156 | |
6157 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
65706a29 PA |
6158 | || event->ws.kind == TARGET_WAITKIND_VFORKED |
6159 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6160 | threads_listing_context_remove (&event->ws, context); | |
cbb8991c DB |
6161 | |
6162 | return 1; | |
6163 | } | |
6164 | ||
6165 | /* If CONTEXT contains any fork child threads that have not been | |
6166 | reported yet, remove them from the CONTEXT list. If such a | |
6167 | thread exists it is because we are stopped at a fork catchpoint | |
6168 | and have not yet called follow_fork, which will set up the | |
6169 | host-side data structures for the new process. */ | |
6170 | ||
6171 | static void | |
6172 | remove_new_fork_children (struct threads_listing_context *context) | |
6173 | { | |
6174 | struct thread_info * thread; | |
6175 | int pid = -1; | |
6176 | struct notif_client *notif = ¬if_client_stop; | |
6177 | struct queue_iter_param param; | |
6178 | ||
6179 | /* For any threads stopped at a fork event, remove the corresponding | |
6180 | fork child threads from the CONTEXT list. */ | |
6181 | ALL_NON_EXITED_THREADS (thread) | |
6182 | { | |
6183 | struct target_waitstatus *ws = &thread->pending_follow; | |
6184 | ||
6185 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
6186 | { | |
6187 | threads_listing_context_remove (ws, context); | |
6188 | } | |
6189 | } | |
6190 | ||
6191 | /* Check for any pending fork events (not reported or processed yet) | |
6192 | in process PID and remove those fork child threads from the | |
6193 | CONTEXT list as well. */ | |
6194 | remote_notif_get_pending_events (notif); | |
6195 | param.input = context; | |
6196 | param.output = NULL; | |
6197 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6198 | remove_child_of_pending_fork, ¶m); | |
6199 | } | |
6200 | ||
f48ff2a7 YQ |
6201 | /* Remove stop replies in the queue if its pid is equal to the given |
6202 | inferior's pid. */ | |
722247f1 YQ |
6203 | |
6204 | static int | |
f48ff2a7 YQ |
6205 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
6206 | QUEUE_ITER (stop_reply_p) *iter, | |
6207 | stop_reply_p event, | |
6208 | void *data) | |
722247f1 | 6209 | { |
19ba03f4 SM |
6210 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6211 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 6212 | |
f48ff2a7 | 6213 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
6214 | { |
6215 | stop_reply_xfree (event); | |
6216 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6217 | } | |
6218 | ||
6219 | return 1; | |
6220 | } | |
6221 | ||
f48ff2a7 | 6222 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 6223 | |
74531fed | 6224 | static void |
5f4cf0bb | 6225 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 6226 | { |
722247f1 YQ |
6227 | int i; |
6228 | struct queue_iter_param param; | |
f48ff2a7 YQ |
6229 | struct stop_reply *reply; |
6230 | struct remote_state *rs = get_remote_state (); | |
6231 | struct remote_notif_state *rns = rs->notif_state; | |
6232 | ||
6233 | /* This function can be notified when an inferior exists. When the | |
6234 | target is not remote, the notification state is NULL. */ | |
6235 | if (rs->remote_desc == NULL) | |
6236 | return; | |
6237 | ||
6238 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 6239 | |
74531fed | 6240 | /* Discard the in-flight notification. */ |
f48ff2a7 | 6241 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 6242 | { |
722247f1 | 6243 | stop_reply_xfree (reply); |
f48ff2a7 | 6244 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 6245 | } |
c906108c | 6246 | |
722247f1 YQ |
6247 | param.input = inf; |
6248 | param.output = NULL; | |
74531fed PA |
6249 | /* Discard the stop replies we have already pulled with |
6250 | vStopped. */ | |
722247f1 | 6251 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
6252 | remove_stop_reply_for_inferior, ¶m); |
6253 | } | |
6254 | ||
bcc75809 YQ |
6255 | /* If its remote state is equal to the given remote state, |
6256 | remove EVENT from the stop reply queue. */ | |
6257 | ||
6258 | static int | |
6259 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
6260 | QUEUE_ITER (stop_reply_p) *iter, | |
6261 | stop_reply_p event, | |
6262 | void *data) | |
6263 | { | |
19ba03f4 SM |
6264 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6265 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
6266 | |
6267 | if (event->rs == rs) | |
6268 | { | |
6269 | stop_reply_xfree (event); | |
6270 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6271 | } | |
6272 | ||
6273 | return 1; | |
6274 | } | |
6275 | ||
6276 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
6277 | |
6278 | static void | |
bcc75809 | 6279 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
6280 | { |
6281 | struct queue_iter_param param; | |
6282 | ||
bcc75809 | 6283 | param.input = rs; |
f48ff2a7 YQ |
6284 | param.output = NULL; |
6285 | /* Discard the stop replies we have already pulled with | |
6286 | vStopped. */ | |
6287 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 6288 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 6289 | } |
74531fed | 6290 | |
722247f1 YQ |
6291 | /* A parameter to pass data in and out. */ |
6292 | ||
6293 | static int | |
6294 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
6295 | QUEUE_ITER (stop_reply_p) *iter, | |
6296 | stop_reply_p event, | |
6297 | void *data) | |
6298 | { | |
19ba03f4 SM |
6299 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
6300 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
6301 | |
6302 | if (ptid_match (event->ptid, *ptid)) | |
6303 | { | |
6304 | param->output = event; | |
6305 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6306 | return 0; | |
c8e38a49 | 6307 | } |
722247f1 YQ |
6308 | |
6309 | return 1; | |
74531fed | 6310 | } |
43ff13b4 | 6311 | |
722247f1 YQ |
6312 | /* Remove the first reply in 'stop_reply_queue' which matches |
6313 | PTID. */ | |
2e9f7625 | 6314 | |
722247f1 YQ |
6315 | static struct stop_reply * |
6316 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6317 | { |
722247f1 YQ |
6318 | struct queue_iter_param param; |
6319 | ||
6320 | param.input = &ptid; | |
6321 | param.output = NULL; | |
6322 | ||
6323 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6324 | remote_notif_remove_once_on_match, ¶m); | |
6325 | if (notif_debug) | |
6326 | fprintf_unfiltered (gdb_stdlog, | |
6327 | "notif: discard queued event: 'Stop' in %s\n", | |
6328 | target_pid_to_str (ptid)); | |
a744cf53 | 6329 | |
722247f1 | 6330 | return param.output; |
74531fed | 6331 | } |
75c99385 | 6332 | |
74531fed PA |
6333 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6334 | remove it from the queue, and return it. Returns NULL if none is | |
6335 | found. If there are still queued events left to process, tell the | |
6336 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6337 | |
74531fed PA |
6338 | static struct stop_reply * |
6339 | queued_stop_reply (ptid_t ptid) | |
6340 | { | |
722247f1 | 6341 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6342 | |
722247f1 | 6343 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6344 | /* There's still at least an event left. */ |
6345 | mark_async_event_handler (remote_async_inferior_event_token); | |
6346 | ||
722247f1 | 6347 | return r; |
74531fed PA |
6348 | } |
6349 | ||
6350 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6351 | know that we now have at least one queued event left to pass to the | |
6352 | core side, tell the event loop to get back to target_wait soon. */ | |
6353 | ||
6354 | static void | |
6355 | push_stop_reply (struct stop_reply *new_event) | |
6356 | { | |
722247f1 | 6357 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6358 | |
722247f1 YQ |
6359 | if (notif_debug) |
6360 | fprintf_unfiltered (gdb_stdlog, | |
6361 | "notif: push 'Stop' %s to queue %d\n", | |
6362 | target_pid_to_str (new_event->ptid), | |
6363 | QUEUE_length (stop_reply_p, | |
6364 | stop_reply_queue)); | |
74531fed PA |
6365 | |
6366 | mark_async_event_handler (remote_async_inferior_event_token); | |
6367 | } | |
6368 | ||
722247f1 YQ |
6369 | static int |
6370 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6371 | QUEUE_ITER (stop_reply_p) *iter, | |
6372 | struct stop_reply *event, | |
6373 | void *data) | |
6374 | { | |
19ba03f4 | 6375 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6376 | |
6377 | return !(ptid_equal (*ptid, event->ptid) | |
6378 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6379 | } | |
6380 | ||
74531fed PA |
6381 | /* Returns true if we have a stop reply for PTID. */ |
6382 | ||
6383 | static int | |
6384 | peek_stop_reply (ptid_t ptid) | |
6385 | { | |
722247f1 YQ |
6386 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6387 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6388 | } |
6389 | ||
1f10ba14 PA |
6390 | /* Skip PACKET until the next semi-colon (or end of string). */ |
6391 | ||
6392 | static char * | |
6393 | skip_to_semicolon (char *p) | |
6394 | { | |
6395 | while (*p != '\0' && *p != ';') | |
6396 | p++; | |
6397 | return p; | |
6398 | } | |
6399 | ||
26d56a93 SL |
6400 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6401 | starting with P and ending with PEND matches PREFIX. */ | |
6402 | ||
6403 | static int | |
6404 | strprefix (const char *p, const char *pend, const char *prefix) | |
6405 | { | |
6406 | for ( ; p < pend; p++, prefix++) | |
6407 | if (*p != *prefix) | |
6408 | return 0; | |
6409 | return *prefix == '\0'; | |
6410 | } | |
6411 | ||
74531fed PA |
6412 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6413 | result is stored in EVENT, or throws an error. */ | |
6414 | ||
6415 | static void | |
6416 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6417 | { | |
6418 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6419 | ULONGEST addr; | |
6420 | char *p; | |
94585166 | 6421 | int skipregs = 0; |
74531fed PA |
6422 | |
6423 | event->ptid = null_ptid; | |
bcc75809 | 6424 | event->rs = get_remote_state (); |
74531fed PA |
6425 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6426 | event->ws.value.integer = 0; | |
f7e6eed5 | 6427 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6428 | event->regcache = NULL; |
dc146f7c | 6429 | event->core = -1; |
74531fed PA |
6430 | |
6431 | switch (buf[0]) | |
6432 | { | |
6433 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6434 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6435 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6436 | ss = signal number | |
6437 | n... = register number | |
6438 | r... = register contents | |
6439 | */ | |
6440 | ||
6441 | p = &buf[3]; /* after Txx */ | |
6442 | while (*p) | |
6443 | { | |
6444 | char *p1; | |
cea39f65 | 6445 | int fieldsize; |
43ff13b4 | 6446 | |
1f10ba14 PA |
6447 | p1 = strchr (p, ':'); |
6448 | if (p1 == NULL) | |
6449 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6450 | Packet: '%s'\n"), | |
6451 | p, buf); | |
6452 | if (p == p1) | |
6453 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6454 | Packet: '%s'\n"), | |
6455 | p, buf); | |
3c3bea1c | 6456 | |
1f10ba14 PA |
6457 | /* Some "registers" are actually extended stop information. |
6458 | Note if you're adding a new entry here: GDB 7.9 and | |
6459 | earlier assume that all register "numbers" that start | |
6460 | with an hex digit are real register numbers. Make sure | |
6461 | the server only sends such a packet if it knows the | |
6462 | client understands it. */ | |
c8e38a49 | 6463 | |
26d56a93 | 6464 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6465 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
6466 | else if (strprefix (p, p1, "syscall_entry")) |
6467 | { | |
6468 | ULONGEST sysno; | |
6469 | ||
6470 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
6471 | p = unpack_varlen_hex (++p1, &sysno); | |
6472 | event->ws.value.syscall_number = (int) sysno; | |
6473 | } | |
6474 | else if (strprefix (p, p1, "syscall_return")) | |
6475 | { | |
6476 | ULONGEST sysno; | |
6477 | ||
6478 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
6479 | p = unpack_varlen_hex (++p1, &sysno); | |
6480 | event->ws.value.syscall_number = (int) sysno; | |
6481 | } | |
26d56a93 SL |
6482 | else if (strprefix (p, p1, "watch") |
6483 | || strprefix (p, p1, "rwatch") | |
6484 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6485 | { |
f7e6eed5 | 6486 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6487 | p = unpack_varlen_hex (++p1, &addr); |
6488 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6489 | } |
26d56a93 | 6490 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6491 | { |
6492 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6493 | ||
6494 | /* Make sure the stub doesn't forget to indicate support | |
6495 | with qSupported. */ | |
6496 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6497 | error (_("Unexpected swbreak stop reason")); | |
6498 | ||
6499 | /* The value part is documented as "must be empty", | |
6500 | though we ignore it, in case we ever decide to make | |
6501 | use of it in a backward compatible way. */ | |
6502 | p = skip_to_semicolon (p1 + 1); | |
6503 | } | |
26d56a93 | 6504 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6505 | { |
6506 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6507 | ||
6508 | /* Make sure the stub doesn't forget to indicate support | |
6509 | with qSupported. */ | |
6510 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6511 | error (_("Unexpected hwbreak stop reason")); | |
6512 | ||
6513 | /* See above. */ | |
6514 | p = skip_to_semicolon (p1 + 1); | |
6515 | } | |
26d56a93 | 6516 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6517 | { |
1f10ba14 PA |
6518 | event->ws.kind = TARGET_WAITKIND_LOADED; |
6519 | p = skip_to_semicolon (p1 + 1); | |
6520 | } | |
26d56a93 | 6521 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6522 | { |
6523 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6524 | /* p1 will indicate "begin" or "end", but it makes | |
6525 | no difference for now, so ignore it. */ | |
6526 | p = skip_to_semicolon (p1 + 1); | |
6527 | } | |
26d56a93 | 6528 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6529 | { |
6530 | ULONGEST c; | |
a744cf53 | 6531 | |
1f10ba14 PA |
6532 | p = unpack_varlen_hex (++p1, &c); |
6533 | event->core = c; | |
cea39f65 | 6534 | } |
26d56a93 | 6535 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6536 | { |
6537 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6538 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6539 | } | |
26d56a93 | 6540 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6541 | { |
6542 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6543 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6544 | } | |
26d56a93 | 6545 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6546 | { |
6547 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
6548 | p = skip_to_semicolon (p1 + 1); | |
6549 | } | |
6ab24463 | 6550 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
6551 | { |
6552 | ULONGEST ignored; | |
6553 | char pathname[PATH_MAX]; | |
6554 | int pathlen; | |
6555 | ||
6556 | /* Determine the length of the execd pathname. */ | |
6557 | p = unpack_varlen_hex (++p1, &ignored); | |
6558 | pathlen = (p - p1) / 2; | |
6559 | ||
6560 | /* Save the pathname for event reporting and for | |
6561 | the next run command. */ | |
6562 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6563 | pathname[pathlen] = '\0'; | |
6564 | ||
6565 | /* This is freed during event handling. */ | |
6566 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6567 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6568 | ||
6569 | /* Skip the registers included in this packet, since | |
6570 | they may be for an architecture different from the | |
6571 | one used by the original program. */ | |
6572 | skipregs = 1; | |
6573 | } | |
65706a29 PA |
6574 | else if (strprefix (p, p1, "create")) |
6575 | { | |
6576 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
6577 | p = skip_to_semicolon (p1 + 1); | |
6578 | } | |
cea39f65 MS |
6579 | else |
6580 | { | |
1f10ba14 PA |
6581 | ULONGEST pnum; |
6582 | char *p_temp; | |
6583 | ||
94585166 DB |
6584 | if (skipregs) |
6585 | { | |
6586 | p = skip_to_semicolon (p1 + 1); | |
6587 | p++; | |
6588 | continue; | |
6589 | } | |
6590 | ||
1f10ba14 PA |
6591 | /* Maybe a real ``P'' register number. */ |
6592 | p_temp = unpack_varlen_hex (p, &pnum); | |
6593 | /* If the first invalid character is the colon, we got a | |
6594 | register number. Otherwise, it's an unknown stop | |
6595 | reason. */ | |
6596 | if (p_temp == p1) | |
6597 | { | |
6598 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6599 | cached_reg_t cached_reg; | |
43ff13b4 | 6600 | |
1f10ba14 PA |
6601 | if (reg == NULL) |
6602 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6603 | Packet: '%s'\n"), |
1f10ba14 | 6604 | hex_string (pnum), p, buf); |
c8e38a49 | 6605 | |
1f10ba14 | 6606 | cached_reg.num = reg->regnum; |
4100683b | 6607 | |
1f10ba14 PA |
6608 | p = p1 + 1; |
6609 | fieldsize = hex2bin (p, cached_reg.data, | |
6610 | register_size (target_gdbarch (), | |
6611 | reg->regnum)); | |
6612 | p += 2 * fieldsize; | |
6613 | if (fieldsize < register_size (target_gdbarch (), | |
6614 | reg->regnum)) | |
6615 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6616 | |
1f10ba14 PA |
6617 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6618 | } | |
6619 | else | |
6620 | { | |
6621 | /* Not a number. Silently skip unknown optional | |
6622 | info. */ | |
6623 | p = skip_to_semicolon (p1 + 1); | |
6624 | } | |
cea39f65 | 6625 | } |
c8e38a49 | 6626 | |
cea39f65 MS |
6627 | if (*p != ';') |
6628 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6629 | buf, p); | |
6630 | ++p; | |
6631 | } | |
5b5596ff PA |
6632 | |
6633 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6634 | break; | |
6635 | ||
c8e38a49 PA |
6636 | /* fall through */ |
6637 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6638 | { |
6639 | int sig; | |
6640 | ||
6641 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6642 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6643 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6644 | event->ws.value.sig = (enum gdb_signal) sig; | |
6645 | else | |
6646 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6647 | } | |
c8e38a49 | 6648 | break; |
65706a29 PA |
6649 | case 'w': /* Thread exited. */ |
6650 | { | |
6651 | char *p; | |
6652 | ULONGEST value; | |
6653 | ||
6654 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
6655 | p = unpack_varlen_hex (&buf[1], &value); | |
6656 | event->ws.value.integer = value; | |
6657 | if (*p != ';') | |
6658 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 6659 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
6660 | break; |
6661 | } | |
c8e38a49 PA |
6662 | case 'W': /* Target exited. */ |
6663 | case 'X': | |
6664 | { | |
6665 | char *p; | |
6666 | int pid; | |
6667 | ULONGEST value; | |
82f73884 | 6668 | |
c8e38a49 PA |
6669 | /* GDB used to accept only 2 hex chars here. Stubs should |
6670 | only send more if they detect GDB supports multi-process | |
6671 | support. */ | |
6672 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6673 | |
c8e38a49 PA |
6674 | if (buf[0] == 'W') |
6675 | { | |
6676 | /* The remote process exited. */ | |
74531fed PA |
6677 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6678 | event->ws.value.integer = value; | |
c8e38a49 PA |
6679 | } |
6680 | else | |
6681 | { | |
6682 | /* The remote process exited with a signal. */ | |
74531fed | 6683 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6684 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6685 | event->ws.value.sig = (enum gdb_signal) value; | |
6686 | else | |
6687 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6688 | } |
82f73884 | 6689 | |
c8e38a49 PA |
6690 | /* If no process is specified, assume inferior_ptid. */ |
6691 | pid = ptid_get_pid (inferior_ptid); | |
6692 | if (*p == '\0') | |
6693 | ; | |
6694 | else if (*p == ';') | |
6695 | { | |
6696 | p++; | |
6697 | ||
0b24eb2d | 6698 | if (*p == '\0') |
82f73884 | 6699 | ; |
61012eef | 6700 | else if (startswith (p, "process:")) |
82f73884 | 6701 | { |
c8e38a49 | 6702 | ULONGEST upid; |
a744cf53 | 6703 | |
c8e38a49 PA |
6704 | p += sizeof ("process:") - 1; |
6705 | unpack_varlen_hex (p, &upid); | |
6706 | pid = upid; | |
82f73884 PA |
6707 | } |
6708 | else | |
6709 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6710 | } |
c8e38a49 PA |
6711 | else |
6712 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6713 | event->ptid = pid_to_ptid (pid); |
6714 | } | |
6715 | break; | |
f2faf941 PA |
6716 | case 'N': |
6717 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
6718 | event->ptid = minus_one_ptid; | |
6719 | break; | |
74531fed PA |
6720 | } |
6721 | ||
6efcd9a8 | 6722 | if (target_is_non_stop_p () && ptid_equal (event->ptid, null_ptid)) |
74531fed PA |
6723 | error (_("No process or thread specified in stop reply: %s"), buf); |
6724 | } | |
6725 | ||
722247f1 YQ |
6726 | /* When the stub wants to tell GDB about a new notification reply, it |
6727 | sends a notification (%Stop, for example). Those can come it at | |
6728 | any time, hence, we have to make sure that any pending | |
6729 | putpkt/getpkt sequence we're making is finished, before querying | |
6730 | the stub for more events with the corresponding ack command | |
6731 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6732 | immediately upon receiving the notification, something like this | |
6733 | could happen: | |
74531fed PA |
6734 | |
6735 | 1.1) --> Hg 1 | |
6736 | 1.2) <-- OK | |
6737 | 1.3) --> g | |
6738 | 1.4) <-- %Stop | |
6739 | 1.5) --> vStopped | |
6740 | 1.6) <-- (registers reply to step #1.3) | |
6741 | ||
6742 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6743 | query. | |
6744 | ||
796cb314 | 6745 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6746 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6747 | doing whatever we were doing: | |
6748 | ||
6749 | 2.1) --> Hg 1 | |
6750 | 2.2) <-- OK | |
6751 | 2.3) --> g | |
6752 | 2.4) <-- %Stop | |
6753 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6754 | 2.5) <-- (registers reply to step #2.3) | |
6755 | ||
6756 | Eventualy after step #2.5, we return to the event loop, which | |
6757 | notices there's an event on the | |
6758 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6759 | associated callback --- the function below. At this point, we're | |
6760 | always safe to start a vStopped sequence. : | |
6761 | ||
6762 | 2.6) --> vStopped | |
6763 | 2.7) <-- T05 thread:2 | |
6764 | 2.8) --> vStopped | |
6765 | 2.9) --> OK | |
6766 | */ | |
6767 | ||
722247f1 YQ |
6768 | void |
6769 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6770 | { |
6771 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6772 | |
f48ff2a7 | 6773 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6774 | { |
722247f1 YQ |
6775 | if (notif_debug) |
6776 | fprintf_unfiltered (gdb_stdlog, | |
6777 | "notif: process: '%s' ack pending event\n", | |
6778 | nc->name); | |
74531fed | 6779 | |
722247f1 | 6780 | /* acknowledge */ |
f48ff2a7 YQ |
6781 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6782 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6783 | |
6784 | while (1) | |
6785 | { | |
6786 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6787 | if (strcmp (rs->buf, "OK") == 0) | |
6788 | break; | |
6789 | else | |
722247f1 | 6790 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6791 | } |
6792 | } | |
722247f1 YQ |
6793 | else |
6794 | { | |
6795 | if (notif_debug) | |
6796 | fprintf_unfiltered (gdb_stdlog, | |
6797 | "notif: process: '%s' no pending reply\n", | |
6798 | nc->name); | |
6799 | } | |
74531fed PA |
6800 | } |
6801 | ||
74531fed PA |
6802 | /* Called when it is decided that STOP_REPLY holds the info of the |
6803 | event that is to be returned to the core. This function always | |
6804 | destroys STOP_REPLY. */ | |
6805 | ||
6806 | static ptid_t | |
6807 | process_stop_reply (struct stop_reply *stop_reply, | |
6808 | struct target_waitstatus *status) | |
6809 | { | |
6810 | ptid_t ptid; | |
6811 | ||
6812 | *status = stop_reply->ws; | |
6813 | ptid = stop_reply->ptid; | |
6814 | ||
6815 | /* If no thread/process was reported by the stub, assume the current | |
6816 | inferior. */ | |
6817 | if (ptid_equal (ptid, null_ptid)) | |
6818 | ptid = inferior_ptid; | |
6819 | ||
5f3563ea | 6820 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
6821 | && status->kind != TARGET_WAITKIND_SIGNALLED |
6822 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 6823 | { |
ee154bee | 6824 | struct remote_state *rs = get_remote_state (); |
799a2abe | 6825 | struct private_thread_info *remote_thr; |
ee154bee | 6826 | |
5f3563ea PA |
6827 | /* Expedited registers. */ |
6828 | if (stop_reply->regcache) | |
6829 | { | |
217f1f79 | 6830 | struct regcache *regcache |
f5656ead | 6831 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6832 | cached_reg_t *reg; |
6833 | int ix; | |
6834 | ||
6835 | for (ix = 0; | |
6836 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6837 | ix++) | |
217f1f79 | 6838 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6839 | VEC_free (cached_reg_t, stop_reply->regcache); |
6840 | } | |
74531fed | 6841 | |
1941c569 | 6842 | remote_notice_new_inferior (ptid, 0); |
799a2abe PA |
6843 | remote_thr = demand_private_info (ptid); |
6844 | remote_thr->core = stop_reply->core; | |
6845 | remote_thr->stop_reason = stop_reply->stop_reason; | |
6846 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
74531fed PA |
6847 | } |
6848 | ||
74531fed PA |
6849 | stop_reply_xfree (stop_reply); |
6850 | return ptid; | |
6851 | } | |
6852 | ||
6853 | /* The non-stop mode version of target_wait. */ | |
6854 | ||
6855 | static ptid_t | |
47608cb1 | 6856 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6857 | { |
6858 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6859 | struct stop_reply *stop_reply; |
6860 | int ret; | |
fee9eda9 | 6861 | int is_notif = 0; |
74531fed PA |
6862 | |
6863 | /* If in non-stop mode, get out of getpkt even if a | |
6864 | notification is received. */ | |
6865 | ||
6866 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6867 | 0 /* forever */, &is_notif); |
74531fed PA |
6868 | while (1) |
6869 | { | |
fee9eda9 | 6870 | if (ret != -1 && !is_notif) |
74531fed PA |
6871 | switch (rs->buf[0]) |
6872 | { | |
6873 | case 'E': /* Error of some sort. */ | |
6874 | /* We're out of sync with the target now. Did it continue | |
6875 | or not? We can't tell which thread it was in non-stop, | |
6876 | so just ignore this. */ | |
6877 | warning (_("Remote failure reply: %s"), rs->buf); | |
6878 | break; | |
6879 | case 'O': /* Console output. */ | |
6880 | remote_console_output (rs->buf + 1); | |
6881 | break; | |
6882 | default: | |
6883 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6884 | break; | |
6885 | } | |
6886 | ||
6887 | /* Acknowledge a pending stop reply that may have arrived in the | |
6888 | mean time. */ | |
f48ff2a7 | 6889 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6890 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6891 | |
6892 | /* If indeed we noticed a stop reply, we're done. */ | |
6893 | stop_reply = queued_stop_reply (ptid); | |
6894 | if (stop_reply != NULL) | |
6895 | return process_stop_reply (stop_reply, status); | |
6896 | ||
47608cb1 | 6897 | /* Still no event. If we're just polling for an event, then |
74531fed | 6898 | return to the event loop. */ |
47608cb1 | 6899 | if (options & TARGET_WNOHANG) |
74531fed PA |
6900 | { |
6901 | status->kind = TARGET_WAITKIND_IGNORE; | |
6902 | return minus_one_ptid; | |
6903 | } | |
6904 | ||
47608cb1 | 6905 | /* Otherwise do a blocking wait. */ |
74531fed | 6906 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6907 | 1 /* forever */, &is_notif); |
74531fed PA |
6908 | } |
6909 | } | |
6910 | ||
6911 | /* Wait until the remote machine stops, then return, storing status in | |
6912 | STATUS just as `wait' would. */ | |
6913 | ||
6914 | static ptid_t | |
47608cb1 | 6915 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6916 | { |
6917 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6918 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6919 | char *buf; |
74531fed PA |
6920 | struct stop_reply *stop_reply; |
6921 | ||
47608cb1 PA |
6922 | again: |
6923 | ||
74531fed PA |
6924 | status->kind = TARGET_WAITKIND_IGNORE; |
6925 | status->value.integer = 0; | |
6926 | ||
6927 | stop_reply = queued_stop_reply (ptid); | |
6928 | if (stop_reply != NULL) | |
6929 | return process_stop_reply (stop_reply, status); | |
6930 | ||
6931 | if (rs->cached_wait_status) | |
6932 | /* Use the cached wait status, but only once. */ | |
6933 | rs->cached_wait_status = 0; | |
6934 | else | |
6935 | { | |
6936 | int ret; | |
722247f1 | 6937 | int is_notif; |
567420d1 PA |
6938 | int forever = ((options & TARGET_WNOHANG) == 0 |
6939 | && wait_forever_enabled_p); | |
6940 | ||
6941 | if (!rs->waiting_for_stop_reply) | |
6942 | { | |
6943 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6944 | return minus_one_ptid; | |
6945 | } | |
74531fed PA |
6946 | |
6947 | if (!target_is_async_p ()) | |
6948 | { | |
934b9bac | 6949 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6950 | /* If the user hit C-c before this packet, or between packets, |
6951 | pretend that it was hit right here. */ | |
522002f9 | 6952 | if (check_quit_flag ()) |
74531fed | 6953 | { |
522002f9 | 6954 | clear_quit_flag (); |
934b9bac | 6955 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6956 | } |
6957 | } | |
6958 | ||
6959 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6960 | _never_ wait for ever -> test on target_is_async_p(). | |
6961 | However, before we do that we need to ensure that the caller | |
6962 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6963 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6964 | forever, &is_notif); |
722247f1 | 6965 | |
5e1b953b SDJ |
6966 | if (!target_is_async_p ()) |
6967 | signal (SIGINT, ofunc); | |
6968 | ||
722247f1 YQ |
6969 | /* GDB gets a notification. Return to core as this event is |
6970 | not interesting. */ | |
6971 | if (ret != -1 && is_notif) | |
6972 | return minus_one_ptid; | |
567420d1 PA |
6973 | |
6974 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6975 | return minus_one_ptid; | |
74531fed PA |
6976 | } |
6977 | ||
6978 | buf = rs->buf; | |
6979 | ||
3a29589a DJ |
6980 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6981 | an 'F' or 'O' packet. */ | |
6982 | if (buf[0] != 'F' && buf[0] != 'O') | |
6983 | rs->ctrlc_pending_p = 0; | |
6984 | ||
74531fed PA |
6985 | switch (buf[0]) |
6986 | { | |
6987 | case 'E': /* Error of some sort. */ | |
6988 | /* We're out of sync with the target now. Did it continue or | |
6989 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
6990 | rs->waiting_for_stop_reply = 0; |
6991 | ||
74531fed PA |
6992 | warning (_("Remote failure reply: %s"), buf); |
6993 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6994 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6995 | break; |
6996 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6997 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6998 | rs->ctrlc_pending_p = 0; | |
74531fed | 6999 | break; |
f2faf941 | 7000 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7001 | { |
29090fb6 LM |
7002 | struct stop_reply *stop_reply; |
7003 | ||
7004 | /* There is a stop reply to handle. */ | |
7005 | rs->waiting_for_stop_reply = 0; | |
7006 | ||
7007 | stop_reply | |
722247f1 YQ |
7008 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, |
7009 | rs->buf); | |
74531fed | 7010 | |
74531fed | 7011 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7012 | break; |
7013 | } | |
7014 | case 'O': /* Console output. */ | |
7015 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7016 | break; |
7017 | case '\0': | |
b73be471 | 7018 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7019 | { |
7020 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7021 | remote system doesn't support it. */ | |
7022 | target_terminal_ours_for_output (); | |
7023 | printf_filtered | |
7024 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7025 | gdb_signal_to_name (rs->last_sent_signal)); |
7026 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
7027 | target_terminal_inferior (); |
7028 | ||
280ceea3 | 7029 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 | 7030 | putpkt ((char *) buf); |
c8e38a49 | 7031 | break; |
43ff13b4 | 7032 | } |
c8e38a49 PA |
7033 | /* else fallthrough */ |
7034 | default: | |
7035 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7036 | break; |
43ff13b4 | 7037 | } |
c8e38a49 | 7038 | |
f2faf941 PA |
7039 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7040 | return minus_one_ptid; | |
7041 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7042 | { |
7043 | /* Nothing interesting happened. If we're doing a non-blocking | |
7044 | poll, we're done. Otherwise, go back to waiting. */ | |
7045 | if (options & TARGET_WNOHANG) | |
7046 | return minus_one_ptid; | |
7047 | else | |
7048 | goto again; | |
7049 | } | |
74531fed PA |
7050 | else if (status->kind != TARGET_WAITKIND_EXITED |
7051 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
7052 | { |
7053 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 7054 | record_currthread (rs, event_ptid); |
82f73884 PA |
7055 | else |
7056 | event_ptid = inferior_ptid; | |
43ff13b4 | 7057 | } |
74531fed PA |
7058 | else |
7059 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7060 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7061 | |
82f73884 | 7062 | return event_ptid; |
43ff13b4 JM |
7063 | } |
7064 | ||
74531fed PA |
7065 | /* Wait until the remote machine stops, then return, storing status in |
7066 | STATUS just as `wait' would. */ | |
7067 | ||
c8e38a49 | 7068 | static ptid_t |
117de6a9 | 7069 | remote_wait (struct target_ops *ops, |
47608cb1 | 7070 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
7071 | { |
7072 | ptid_t event_ptid; | |
7073 | ||
6efcd9a8 | 7074 | if (target_is_non_stop_p ()) |
47608cb1 | 7075 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 7076 | else |
47608cb1 | 7077 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 7078 | |
d9d41e78 | 7079 | if (target_is_async_p ()) |
c8e38a49 | 7080 | { |
74531fed PA |
7081 | /* If there are are events left in the queue tell the event loop |
7082 | to return here. */ | |
722247f1 | 7083 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 7084 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 7085 | } |
c8e38a49 PA |
7086 | |
7087 | return event_ptid; | |
7088 | } | |
7089 | ||
74ca34ce | 7090 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7091 | |
b96ec7ac | 7092 | static int |
56be3814 | 7093 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
7094 | { |
7095 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 7096 | char *buf, *p; |
b96ec7ac AC |
7097 | char regp[MAX_REGISTER_SIZE]; |
7098 | int i; | |
7099 | ||
4082afcc | 7100 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7101 | return 0; |
7102 | ||
7103 | if (reg->pnum == -1) | |
7104 | return 0; | |
7105 | ||
2e9f7625 | 7106 | p = rs->buf; |
fcad0fa4 | 7107 | *p++ = 'p'; |
74ca34ce | 7108 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7109 | *p++ = '\0'; |
1f4437a4 MS |
7110 | putpkt (rs->buf); |
7111 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 7112 | |
2e9f7625 DJ |
7113 | buf = rs->buf; |
7114 | ||
74ca34ce DJ |
7115 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
7116 | { | |
7117 | case PACKET_OK: | |
7118 | break; | |
7119 | case PACKET_UNKNOWN: | |
7120 | return 0; | |
7121 | case PACKET_ERROR: | |
27a9c0bf MS |
7122 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7123 | gdbarch_register_name (get_regcache_arch (regcache), | |
7124 | reg->regnum), | |
7125 | buf); | |
74ca34ce | 7126 | } |
3f9a994c JB |
7127 | |
7128 | /* If this register is unfetchable, tell the regcache. */ | |
7129 | if (buf[0] == 'x') | |
8480adf2 | 7130 | { |
56be3814 | 7131 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 7132 | return 1; |
b96ec7ac | 7133 | } |
b96ec7ac | 7134 | |
3f9a994c JB |
7135 | /* Otherwise, parse and supply the value. */ |
7136 | p = buf; | |
7137 | i = 0; | |
7138 | while (p[0] != 0) | |
7139 | { | |
7140 | if (p[1] == 0) | |
74ca34ce | 7141 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7142 | |
7143 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7144 | p += 2; | |
7145 | } | |
56be3814 | 7146 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 7147 | return 1; |
b96ec7ac AC |
7148 | } |
7149 | ||
74ca34ce DJ |
7150 | /* Fetch the registers included in the target's 'g' packet. */ |
7151 | ||
29709017 DJ |
7152 | static int |
7153 | send_g_packet (void) | |
c906108c | 7154 | { |
d01949b6 | 7155 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7156 | int buf_len; |
c906108c | 7157 | |
bba74b36 | 7158 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 7159 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 7160 | |
29709017 DJ |
7161 | /* We can get out of synch in various cases. If the first character |
7162 | in the buffer is not a hex character, assume that has happened | |
7163 | and try to fetch another packet to read. */ | |
7164 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7165 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7166 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7167 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7168 | { | |
7169 | if (remote_debug) | |
7170 | fprintf_unfiltered (gdb_stdlog, | |
7171 | "Bad register packet; fetching a new packet\n"); | |
7172 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7173 | } | |
7174 | ||
74ca34ce DJ |
7175 | buf_len = strlen (rs->buf); |
7176 | ||
7177 | /* Sanity check the received packet. */ | |
7178 | if (buf_len % 2 != 0) | |
7179 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
7180 | |
7181 | return buf_len / 2; | |
7182 | } | |
7183 | ||
7184 | static void | |
56be3814 | 7185 | process_g_packet (struct regcache *regcache) |
29709017 | 7186 | { |
4a22f64d | 7187 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
7188 | struct remote_state *rs = get_remote_state (); |
7189 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
7190 | int i, buf_len; | |
7191 | char *p; | |
7192 | char *regs; | |
7193 | ||
7194 | buf_len = strlen (rs->buf); | |
7195 | ||
7196 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
7197 | if (buf_len > 2 * rsa->sizeof_g_packet) |
7198 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
7199 | ||
7200 | /* Save the size of the packet sent to us by the target. It is used | |
7201 | as a heuristic when determining the max size of packets that the | |
7202 | target can safely receive. */ | |
7203 | if (rsa->actual_register_packet_size == 0) | |
7204 | rsa->actual_register_packet_size = buf_len; | |
7205 | ||
7206 | /* If this is smaller than we guessed the 'g' packet would be, | |
7207 | update our records. A 'g' reply that doesn't include a register's | |
7208 | value implies either that the register is not available, or that | |
7209 | the 'p' packet must be used. */ | |
7210 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 7211 | { |
74ca34ce DJ |
7212 | rsa->sizeof_g_packet = buf_len / 2; |
7213 | ||
4a22f64d | 7214 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 7215 | { |
74ca34ce DJ |
7216 | if (rsa->regs[i].pnum == -1) |
7217 | continue; | |
7218 | ||
7219 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
7220 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 7221 | else |
74ca34ce | 7222 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 7223 | } |
74ca34ce | 7224 | } |
b323314b | 7225 | |
224c3ddb | 7226 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
7227 | |
7228 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 7229 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 7230 | |
c906108c SS |
7231 | /* Reply describes registers byte by byte, each byte encoded as two |
7232 | hex characters. Suck them all up, then supply them to the | |
7233 | register cacheing/storage mechanism. */ | |
7234 | ||
74ca34ce | 7235 | p = rs->buf; |
ea9c271d | 7236 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 7237 | { |
74ca34ce DJ |
7238 | if (p[0] == 0 || p[1] == 0) |
7239 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
7240 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7241 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 7242 | |
c906108c | 7243 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 7244 | regs[i] = 0; /* 'x' */ |
c906108c SS |
7245 | else |
7246 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7247 | p += 2; | |
7248 | } | |
7249 | ||
a744cf53 MS |
7250 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
7251 | { | |
7252 | struct packet_reg *r = &rsa->regs[i]; | |
7253 | ||
7254 | if (r->in_g_packet) | |
7255 | { | |
7256 | if (r->offset * 2 >= strlen (rs->buf)) | |
7257 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
7258 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7259 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
7260 | else if (rs->buf[r->offset * 2] == 'x') |
7261 | { | |
7262 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
7263 | /* The register isn't available, mark it as such (at | |
7264 | the same time setting the value to zero). */ | |
7265 | regcache_raw_supply (regcache, r->regnum, NULL); | |
7266 | } | |
7267 | else | |
7268 | regcache_raw_supply (regcache, r->regnum, | |
7269 | regs + r->offset); | |
7270 | } | |
7271 | } | |
c906108c SS |
7272 | } |
7273 | ||
29709017 | 7274 | static void |
56be3814 | 7275 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
7276 | { |
7277 | send_g_packet (); | |
56be3814 | 7278 | process_g_packet (regcache); |
29709017 DJ |
7279 | } |
7280 | ||
e6e4e701 PA |
7281 | /* Make the remote selected traceframe match GDB's selected |
7282 | traceframe. */ | |
7283 | ||
7284 | static void | |
7285 | set_remote_traceframe (void) | |
7286 | { | |
7287 | int newnum; | |
262e1174 | 7288 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 7289 | |
262e1174 | 7290 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
7291 | return; |
7292 | ||
7293 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 7294 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
7295 | |
7296 | newnum = target_trace_find (tfind_number, | |
7297 | get_traceframe_number (), 0, 0, NULL); | |
7298 | ||
7299 | /* Should not happen. If it does, all bets are off. */ | |
7300 | if (newnum != get_traceframe_number ()) | |
7301 | warning (_("could not set remote traceframe")); | |
7302 | } | |
7303 | ||
74ca34ce | 7304 | static void |
28439f5e PA |
7305 | remote_fetch_registers (struct target_ops *ops, |
7306 | struct regcache *regcache, int regnum) | |
74ca34ce | 7307 | { |
74ca34ce DJ |
7308 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7309 | int i; | |
7310 | ||
e6e4e701 | 7311 | set_remote_traceframe (); |
79d7f229 | 7312 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7313 | |
7314 | if (regnum >= 0) | |
7315 | { | |
7316 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7317 | |
74ca34ce DJ |
7318 | gdb_assert (reg != NULL); |
7319 | ||
7320 | /* If this register might be in the 'g' packet, try that first - | |
7321 | we are likely to read more than one register. If this is the | |
7322 | first 'g' packet, we might be overly optimistic about its | |
7323 | contents, so fall back to 'p'. */ | |
7324 | if (reg->in_g_packet) | |
7325 | { | |
56be3814 | 7326 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
7327 | if (reg->in_g_packet) |
7328 | return; | |
7329 | } | |
7330 | ||
56be3814 | 7331 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
7332 | return; |
7333 | ||
7334 | /* This register is not available. */ | |
56be3814 | 7335 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
7336 | |
7337 | return; | |
7338 | } | |
7339 | ||
56be3814 | 7340 | fetch_registers_using_g (regcache); |
74ca34ce | 7341 | |
4a22f64d | 7342 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7343 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7344 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7345 | { |
7346 | /* This register is not available. */ | |
56be3814 | 7347 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7348 | } |
7349 | } | |
7350 | ||
c906108c SS |
7351 | /* Prepare to store registers. Since we may send them all (using a |
7352 | 'G' request), we have to read out the ones we don't want to change | |
7353 | first. */ | |
7354 | ||
c5aa993b | 7355 | static void |
f32dbf8c | 7356 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7357 | { |
ea9c271d | 7358 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7359 | int i; |
cfd77fa1 | 7360 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 7361 | |
c906108c | 7362 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7363 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7364 | { |
7365 | case PACKET_DISABLE: | |
7366 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7367 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7368 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7369 | if (rsa->regs[i].in_g_packet) |
316f2060 | 7370 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
7371 | break; |
7372 | case PACKET_ENABLE: | |
7373 | break; | |
7374 | } | |
7375 | } | |
7376 | ||
ad10f812 | 7377 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7378 | packet was not recognized. */ |
5a2468f5 JM |
7379 | |
7380 | static int | |
1f4437a4 MS |
7381 | store_register_using_P (const struct regcache *regcache, |
7382 | struct packet_reg *reg) | |
5a2468f5 | 7383 | { |
4a22f64d | 7384 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7385 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7386 | /* Try storing a single register. */ |
6d820c5c | 7387 | char *buf = rs->buf; |
cfd77fa1 | 7388 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7389 | char *p; |
5a2468f5 | 7390 | |
4082afcc | 7391 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7392 | return 0; |
7393 | ||
7394 | if (reg->pnum == -1) | |
7395 | return 0; | |
7396 | ||
ea9c271d | 7397 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7398 | p = buf + strlen (buf); |
56be3814 | 7399 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7400 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7401 | putpkt (rs->buf); |
7402 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7403 | |
74ca34ce DJ |
7404 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7405 | { | |
7406 | case PACKET_OK: | |
7407 | return 1; | |
7408 | case PACKET_ERROR: | |
27a9c0bf MS |
7409 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7410 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7411 | case PACKET_UNKNOWN: |
7412 | return 0; | |
7413 | default: | |
7414 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7415 | } | |
c906108c SS |
7416 | } |
7417 | ||
23860348 MS |
7418 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7419 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7420 | |
7421 | static void | |
56be3814 | 7422 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7423 | { |
d01949b6 | 7424 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7425 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7426 | gdb_byte *regs; |
c906108c SS |
7427 | char *p; |
7428 | ||
193cb69f AC |
7429 | /* Extract all the registers in the regcache copying them into a |
7430 | local buffer. */ | |
7431 | { | |
b323314b | 7432 | int i; |
a744cf53 | 7433 | |
224c3ddb | 7434 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7435 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7436 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7437 | { |
ea9c271d | 7438 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7439 | |
b323314b | 7440 | if (r->in_g_packet) |
56be3814 | 7441 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7442 | } |
7443 | } | |
c906108c SS |
7444 | |
7445 | /* Command describes registers byte by byte, | |
7446 | each byte encoded as two hex characters. */ | |
6d820c5c | 7447 | p = rs->buf; |
193cb69f | 7448 | *p++ = 'G'; |
74ca34ce DJ |
7449 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7450 | updated. */ | |
7451 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7452 | putpkt (rs->buf); |
7453 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7454 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7455 | error (_("Could not write registers; remote failure reply '%s'"), |
7456 | rs->buf); | |
c906108c | 7457 | } |
74ca34ce DJ |
7458 | |
7459 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7460 | of the register cache buffer. FIXME: ignores errors. */ | |
7461 | ||
7462 | static void | |
28439f5e PA |
7463 | remote_store_registers (struct target_ops *ops, |
7464 | struct regcache *regcache, int regnum) | |
74ca34ce | 7465 | { |
74ca34ce DJ |
7466 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7467 | int i; | |
7468 | ||
e6e4e701 | 7469 | set_remote_traceframe (); |
79d7f229 | 7470 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7471 | |
7472 | if (regnum >= 0) | |
7473 | { | |
7474 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7475 | |
74ca34ce DJ |
7476 | gdb_assert (reg != NULL); |
7477 | ||
7478 | /* Always prefer to store registers using the 'P' packet if | |
7479 | possible; we often change only a small number of registers. | |
7480 | Sometimes we change a larger number; we'd need help from a | |
7481 | higher layer to know to use 'G'. */ | |
56be3814 | 7482 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7483 | return; |
7484 | ||
7485 | /* For now, don't complain if we have no way to write the | |
7486 | register. GDB loses track of unavailable registers too | |
7487 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7488 | any way to read the register, either... */ |
74ca34ce DJ |
7489 | if (!reg->in_g_packet) |
7490 | return; | |
7491 | ||
56be3814 | 7492 | store_registers_using_G (regcache); |
74ca34ce DJ |
7493 | return; |
7494 | } | |
7495 | ||
56be3814 | 7496 | store_registers_using_G (regcache); |
74ca34ce | 7497 | |
4a22f64d | 7498 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7499 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7500 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7501 | /* See above for why we do not issue an error here. */ |
7502 | continue; | |
7503 | } | |
c906108c SS |
7504 | \f |
7505 | ||
7506 | /* Return the number of hex digits in num. */ | |
7507 | ||
7508 | static int | |
fba45db2 | 7509 | hexnumlen (ULONGEST num) |
c906108c SS |
7510 | { |
7511 | int i; | |
7512 | ||
7513 | for (i = 0; num != 0; i++) | |
7514 | num >>= 4; | |
7515 | ||
7516 | return max (i, 1); | |
7517 | } | |
7518 | ||
2df3850c | 7519 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7520 | |
7521 | static int | |
fba45db2 | 7522 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7523 | { |
c906108c | 7524 | int len = hexnumlen (num); |
a744cf53 | 7525 | |
2df3850c JM |
7526 | return hexnumnstr (buf, num, len); |
7527 | } | |
7528 | ||
c906108c | 7529 | |
2df3850c | 7530 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7531 | |
2df3850c | 7532 | static int |
fba45db2 | 7533 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7534 | { |
7535 | int i; | |
7536 | ||
7537 | buf[width] = '\0'; | |
7538 | ||
7539 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7540 | { |
c5aa993b | 7541 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7542 | num >>= 4; |
7543 | } | |
7544 | ||
2df3850c | 7545 | return width; |
c906108c SS |
7546 | } |
7547 | ||
23860348 | 7548 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7549 | |
7550 | static CORE_ADDR | |
fba45db2 | 7551 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7552 | { |
883b9c6c | 7553 | unsigned int address_size = remote_address_size; |
a744cf53 | 7554 | |
911c95a5 UW |
7555 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7556 | if (!address_size) | |
f5656ead | 7557 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7558 | |
7559 | if (address_size > 0 | |
7560 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7561 | { |
7562 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7563 | in a ULONGEST variable. */ |
c906108c | 7564 | ULONGEST mask = 1; |
a744cf53 | 7565 | |
911c95a5 | 7566 | mask = (mask << address_size) - 1; |
c906108c SS |
7567 | addr &= mask; |
7568 | } | |
7569 | return addr; | |
7570 | } | |
7571 | ||
7572 | /* Determine whether the remote target supports binary downloading. | |
7573 | This is accomplished by sending a no-op memory write of zero length | |
7574 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7575 | the whole packet, since many stubs strip the eighth bit and |
7576 | subsequently compute a wrong checksum, which causes real havoc with | |
7577 | remote_write_bytes. | |
7a292a7a | 7578 | |
96baa820 | 7579 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7580 | clean. In cases like this, the user should clear "remote |
23860348 | 7581 | X-packet". */ |
96baa820 | 7582 | |
c906108c | 7583 | static void |
fba45db2 | 7584 | check_binary_download (CORE_ADDR addr) |
c906108c | 7585 | { |
d01949b6 | 7586 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7587 | |
4082afcc | 7588 | switch (packet_support (PACKET_X)) |
c906108c | 7589 | { |
96baa820 JM |
7590 | case PACKET_DISABLE: |
7591 | break; | |
7592 | case PACKET_ENABLE: | |
7593 | break; | |
7594 | case PACKET_SUPPORT_UNKNOWN: | |
7595 | { | |
96baa820 | 7596 | char *p; |
802188a7 | 7597 | |
2e9f7625 | 7598 | p = rs->buf; |
96baa820 JM |
7599 | *p++ = 'X'; |
7600 | p += hexnumstr (p, (ULONGEST) addr); | |
7601 | *p++ = ','; | |
7602 | p += hexnumstr (p, (ULONGEST) 0); | |
7603 | *p++ = ':'; | |
7604 | *p = '\0'; | |
802188a7 | 7605 | |
2e9f7625 | 7606 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7607 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7608 | |
2e9f7625 | 7609 | if (rs->buf[0] == '\0') |
96baa820 JM |
7610 | { |
7611 | if (remote_debug) | |
7612 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7613 | "binary downloading NOT " |
7614 | "supported by target\n"); | |
444abaca | 7615 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7616 | } |
7617 | else | |
7618 | { | |
7619 | if (remote_debug) | |
7620 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7621 | "binary downloading supported by target\n"); |
444abaca | 7622 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7623 | } |
7624 | break; | |
7625 | } | |
c906108c SS |
7626 | } |
7627 | } | |
7628 | ||
124e13d9 SM |
7629 | /* Helper function to resize the payload in order to try to get a good |
7630 | alignment. We try to write an amount of data such that the next write will | |
7631 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7632 | ||
7633 | static int | |
7634 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7635 | { | |
7636 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7637 | } | |
7638 | ||
c906108c SS |
7639 | /* Write memory data directly to the remote machine. |
7640 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7641 | HEADER is the starting part of the packet. |
c906108c SS |
7642 | MEMADDR is the address in the remote memory space. |
7643 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7644 | LEN_UNITS is the number of addressable units to write. |
7645 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7646 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7647 | should send data as binary ('X'), or hex-encoded ('M'). | |
7648 | ||
7649 | The function creates packet of the form | |
7650 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7651 | ||
124e13d9 | 7652 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7653 | |
7654 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7655 | are omitted. | |
7656 | ||
9b409511 | 7657 | Return the transferred status, error or OK (an |
124e13d9 SM |
7658 | 'enum target_xfer_status' value). Save the number of addressable units |
7659 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7660 | ||
7661 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7662 | exchange between gdb and the stub could look like (?? in place of the | |
7663 | checksum): | |
7664 | ||
7665 | -> $m1000,4#?? | |
7666 | <- aaaabbbbccccdddd | |
7667 | ||
7668 | -> $M1000,3:eeeeffffeeee#?? | |
7669 | <- OK | |
7670 | ||
7671 | -> $m1000,4#?? | |
7672 | <- eeeeffffeeeedddd */ | |
c906108c | 7673 | |
9b409511 | 7674 | static enum target_xfer_status |
a76d924d | 7675 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7676 | const gdb_byte *myaddr, ULONGEST len_units, |
7677 | int unit_size, ULONGEST *xfered_len_units, | |
7678 | char packet_format, int use_length) | |
c906108c | 7679 | { |
6d820c5c | 7680 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7681 | char *p; |
a76d924d DJ |
7682 | char *plen = NULL; |
7683 | int plenlen = 0; | |
124e13d9 SM |
7684 | int todo_units; |
7685 | int units_written; | |
7686 | int payload_capacity_bytes; | |
7687 | int payload_length_bytes; | |
a76d924d DJ |
7688 | |
7689 | if (packet_format != 'X' && packet_format != 'M') | |
7690 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7691 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7692 | |
124e13d9 | 7693 | if (len_units == 0) |
9b409511 | 7694 | return TARGET_XFER_EOF; |
b2182ed2 | 7695 | |
124e13d9 | 7696 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7697 | |
6d820c5c DJ |
7698 | /* The packet buffer will be large enough for the payload; |
7699 | get_memory_packet_size ensures this. */ | |
a76d924d | 7700 | rs->buf[0] = '\0'; |
c906108c | 7701 | |
a257b5bb | 7702 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7703 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7704 | ||
124e13d9 | 7705 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7706 | if (!use_length) |
0df8b418 | 7707 | /* The comma won't be used. */ |
124e13d9 SM |
7708 | payload_capacity_bytes += 1; |
7709 | payload_capacity_bytes -= strlen (header); | |
7710 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7711 | |
a76d924d | 7712 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7713 | |
a76d924d DJ |
7714 | strcat (rs->buf, header); |
7715 | p = rs->buf + strlen (header); | |
7716 | ||
7717 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7718 | if (packet_format == 'X') | |
c906108c | 7719 | { |
23860348 | 7720 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7721 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7722 | if (use_length) |
124e13d9 SM |
7723 | payload_capacity_bytes -= hexnumlen (todo_units); |
7724 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7725 | } |
7726 | else | |
7727 | { | |
124e13d9 SM |
7728 | /* Number of bytes that will fit. */ |
7729 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7730 | if (use_length) |
124e13d9 SM |
7731 | payload_capacity_bytes -= hexnumlen (todo_units); |
7732 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7733 | } |
a76d924d | 7734 | |
124e13d9 | 7735 | if (todo_units <= 0) |
3de11b2e | 7736 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7737 | _("minimum packet size too small to write data")); |
802188a7 | 7738 | |
6765f3e5 DJ |
7739 | /* If we already need another packet, then try to align the end |
7740 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7741 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7742 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7743 | |
a257b5bb | 7744 | /* Append "<memaddr>". */ |
917317f4 JM |
7745 | memaddr = remote_address_masked (memaddr); |
7746 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7747 | |
a76d924d DJ |
7748 | if (use_length) |
7749 | { | |
7750 | /* Append ",". */ | |
7751 | *p++ = ','; | |
802188a7 | 7752 | |
124e13d9 SM |
7753 | /* Append the length and retain its location and size. It may need to be |
7754 | adjusted once the packet body has been created. */ | |
a76d924d | 7755 | plen = p; |
124e13d9 | 7756 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7757 | p += plenlen; |
7758 | } | |
a257b5bb AC |
7759 | |
7760 | /* Append ":". */ | |
917317f4 JM |
7761 | *p++ = ':'; |
7762 | *p = '\0'; | |
802188a7 | 7763 | |
a257b5bb | 7764 | /* Append the packet body. */ |
a76d924d | 7765 | if (packet_format == 'X') |
917317f4 | 7766 | { |
917317f4 JM |
7767 | /* Binary mode. Send target system values byte by byte, in |
7768 | increasing byte addresses. Only escape certain critical | |
7769 | characters. */ | |
124e13d9 SM |
7770 | payload_length_bytes = |
7771 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7772 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7773 | |
124e13d9 | 7774 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7775 | a second try to keep the end of the packet aligned. Don't do |
7776 | this if the packet is tiny. */ | |
124e13d9 | 7777 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7778 | { |
124e13d9 SM |
7779 | int new_todo_units; |
7780 | ||
7781 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7782 | ||
7783 | if (new_todo_units != units_written) | |
7784 | payload_length_bytes = | |
7785 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7786 | (gdb_byte *) p, &units_written, | |
7787 | payload_capacity_bytes); | |
6765f3e5 DJ |
7788 | } |
7789 | ||
124e13d9 SM |
7790 | p += payload_length_bytes; |
7791 | if (use_length && units_written < todo_units) | |
c906108c | 7792 | { |
802188a7 | 7793 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7794 | and we have actually sent fewer units than planned. |
917317f4 JM |
7795 | Fix-up the length field of the packet. Use the same |
7796 | number of characters as before. */ | |
124e13d9 SM |
7797 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7798 | plenlen); | |
917317f4 | 7799 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7800 | } |
a76d924d DJ |
7801 | } |
7802 | else | |
7803 | { | |
917317f4 JM |
7804 | /* Normal mode: Send target system values byte by byte, in |
7805 | increasing byte addresses. Each byte is encoded as a two hex | |
7806 | value. */ | |
124e13d9 SM |
7807 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7808 | units_written = todo_units; | |
c906108c | 7809 | } |
802188a7 | 7810 | |
2e9f7625 | 7811 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7812 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7813 | |
2e9f7625 | 7814 | if (rs->buf[0] == 'E') |
00d84524 | 7815 | return TARGET_XFER_E_IO; |
802188a7 | 7816 | |
124e13d9 SM |
7817 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7818 | send fewer units than we'd planned. */ | |
7819 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7820 | return TARGET_XFER_OK; |
c906108c SS |
7821 | } |
7822 | ||
a76d924d DJ |
7823 | /* Write memory data directly to the remote machine. |
7824 | This does not inform the data cache; the data cache uses this. | |
7825 | MEMADDR is the address in the remote memory space. | |
7826 | MYADDR is the address of the buffer in our space. | |
7827 | LEN is the number of bytes. | |
7828 | ||
9b409511 YQ |
7829 | Return the transferred status, error or OK (an |
7830 | 'enum target_xfer_status' value). Save the number of bytes | |
7831 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7832 | |
9b409511 YQ |
7833 | static enum target_xfer_status |
7834 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7835 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7836 | { |
7837 | char *packet_format = 0; | |
7838 | ||
7839 | /* Check whether the target supports binary download. */ | |
7840 | check_binary_download (memaddr); | |
7841 | ||
4082afcc | 7842 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7843 | { |
7844 | case PACKET_ENABLE: | |
7845 | packet_format = "X"; | |
7846 | break; | |
7847 | case PACKET_DISABLE: | |
7848 | packet_format = "M"; | |
7849 | break; | |
7850 | case PACKET_SUPPORT_UNKNOWN: | |
7851 | internal_error (__FILE__, __LINE__, | |
7852 | _("remote_write_bytes: bad internal state")); | |
7853 | default: | |
7854 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7855 | } | |
7856 | ||
7857 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7858 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7859 | packet_format[0], 1); |
a76d924d DJ |
7860 | } |
7861 | ||
9217e74e YQ |
7862 | /* Read memory data directly from the remote machine. |
7863 | This does not use the data cache; the data cache uses this. | |
7864 | MEMADDR is the address in the remote memory space. | |
7865 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7866 | LEN_UNITS is the number of addressable memory units to read.. |
7867 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7868 | |
7869 | Return the transferred status, error or OK (an | |
7870 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7871 | transferred in *XFERED_LEN_UNITS. |
7872 | ||
7873 | See the comment of remote_write_bytes_aux for an example of | |
7874 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7875 | |
7876 | static enum target_xfer_status | |
124e13d9 SM |
7877 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7878 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7879 | { |
7880 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7881 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7882 | char *p; |
124e13d9 SM |
7883 | int todo_units; |
7884 | int decoded_bytes; | |
9217e74e | 7885 | |
124e13d9 | 7886 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7887 | /* The packet buffer will be large enough for the payload; |
7888 | get_memory_packet_size ensures this. */ | |
7889 | ||
124e13d9 SM |
7890 | /* Number of units that will fit. */ |
7891 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7892 | |
7893 | /* Construct "m"<memaddr>","<len>". */ | |
7894 | memaddr = remote_address_masked (memaddr); | |
7895 | p = rs->buf; | |
7896 | *p++ = 'm'; | |
7897 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7898 | *p++ = ','; | |
124e13d9 | 7899 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7900 | *p = '\0'; |
7901 | putpkt (rs->buf); | |
7902 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7903 | if (rs->buf[0] == 'E' | |
7904 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7905 | && rs->buf[3] == '\0') | |
7906 | return TARGET_XFER_E_IO; | |
7907 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7908 | characters. */ | |
7909 | p = rs->buf; | |
124e13d9 | 7910 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7911 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7912 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7913 | return TARGET_XFER_OK; |
7914 | } | |
7915 | ||
b55fbac4 YQ |
7916 | /* Using the set of read-only target sections of remote, read live |
7917 | read-only memory. | |
8acf9577 YQ |
7918 | |
7919 | For interface/parameters/return description see target.h, | |
7920 | to_xfer_partial. */ | |
7921 | ||
7922 | static enum target_xfer_status | |
b55fbac4 YQ |
7923 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7924 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7925 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7926 | { |
7927 | struct target_section *secp; | |
7928 | struct target_section_table *table; | |
7929 | ||
7930 | secp = target_section_by_addr (ops, memaddr); | |
7931 | if (secp != NULL | |
7932 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7933 | secp->the_bfd_section) | |
7934 | & SEC_READONLY)) | |
7935 | { | |
7936 | struct target_section *p; | |
7937 | ULONGEST memend = memaddr + len; | |
7938 | ||
7939 | table = target_get_section_table (ops); | |
7940 | ||
7941 | for (p = table->sections; p < table->sections_end; p++) | |
7942 | { | |
7943 | if (memaddr >= p->addr) | |
7944 | { | |
7945 | if (memend <= p->endaddr) | |
7946 | { | |
7947 | /* Entire transfer is within this section. */ | |
124e13d9 | 7948 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7949 | xfered_len); |
8acf9577 YQ |
7950 | } |
7951 | else if (memaddr >= p->endaddr) | |
7952 | { | |
7953 | /* This section ends before the transfer starts. */ | |
7954 | continue; | |
7955 | } | |
7956 | else | |
7957 | { | |
7958 | /* This section overlaps the transfer. Just do half. */ | |
7959 | len = p->endaddr - memaddr; | |
124e13d9 | 7960 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7961 | xfered_len); |
8acf9577 YQ |
7962 | } |
7963 | } | |
7964 | } | |
7965 | } | |
7966 | ||
7967 | return TARGET_XFER_EOF; | |
7968 | } | |
7969 | ||
9217e74e YQ |
7970 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7971 | first if the requested memory is unavailable in traceframe. | |
7972 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7973 | |
9b409511 | 7974 | static enum target_xfer_status |
8acf9577 | 7975 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7976 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7977 | ULONGEST *xfered_len) | |
c906108c | 7978 | { |
6b6aa828 | 7979 | if (len == 0) |
96c4f946 | 7980 | return TARGET_XFER_EOF; |
b2182ed2 | 7981 | |
8acf9577 YQ |
7982 | if (get_traceframe_number () != -1) |
7983 | { | |
7984 | VEC(mem_range_s) *available; | |
7985 | ||
7986 | /* If we fail to get the set of available memory, then the | |
7987 | target does not support querying traceframe info, and so we | |
7988 | attempt reading from the traceframe anyway (assuming the | |
7989 | target implements the old QTro packet then). */ | |
7990 | if (traceframe_available_memory (&available, memaddr, len)) | |
7991 | { | |
7992 | struct cleanup *old_chain; | |
7993 | ||
7994 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7995 | ||
7996 | if (VEC_empty (mem_range_s, available) | |
7997 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7998 | { | |
7999 | enum target_xfer_status res; | |
8000 | ||
8001 | /* Don't read into the traceframe's available | |
8002 | memory. */ | |
8003 | if (!VEC_empty (mem_range_s, available)) | |
8004 | { | |
8005 | LONGEST oldlen = len; | |
8006 | ||
8007 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
8008 | gdb_assert (len <= oldlen); | |
8009 | } | |
8010 | ||
8011 | do_cleanups (old_chain); | |
8012 | ||
8013 | /* This goes through the topmost target again. */ | |
b55fbac4 | 8014 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 8015 | len, unit_size, xfered_len); |
8acf9577 YQ |
8016 | if (res == TARGET_XFER_OK) |
8017 | return TARGET_XFER_OK; | |
8018 | else | |
8019 | { | |
8020 | /* No use trying further, we know some memory starting | |
8021 | at MEMADDR isn't available. */ | |
8022 | *xfered_len = len; | |
8023 | return TARGET_XFER_UNAVAILABLE; | |
8024 | } | |
8025 | } | |
8026 | ||
8027 | /* Don't try to read more than how much is available, in | |
8028 | case the target implements the deprecated QTro packet to | |
8029 | cater for older GDBs (the target's knowledge of read-only | |
8030 | sections may be outdated by now). */ | |
8031 | len = VEC_index (mem_range_s, available, 0)->length; | |
8032 | ||
8033 | do_cleanups (old_chain); | |
8034 | } | |
8035 | } | |
8036 | ||
124e13d9 | 8037 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8038 | } |
74531fed | 8039 | |
c906108c | 8040 | \f |
c906108c | 8041 | |
a76d924d DJ |
8042 | /* Sends a packet with content determined by the printf format string |
8043 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8044 | whether the packet was a success, a failure, or unknown. */ | |
8045 | ||
77b64a49 PA |
8046 | static enum packet_result remote_send_printf (const char *format, ...) |
8047 | ATTRIBUTE_PRINTF (1, 2); | |
8048 | ||
2c0b251b | 8049 | static enum packet_result |
a76d924d DJ |
8050 | remote_send_printf (const char *format, ...) |
8051 | { | |
8052 | struct remote_state *rs = get_remote_state (); | |
8053 | int max_size = get_remote_packet_size (); | |
a76d924d | 8054 | va_list ap; |
a744cf53 | 8055 | |
a76d924d DJ |
8056 | va_start (ap, format); |
8057 | ||
8058 | rs->buf[0] = '\0'; | |
8059 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 8060 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8061 | |
8062 | if (putpkt (rs->buf) < 0) | |
8063 | error (_("Communication problem with target.")); | |
8064 | ||
8065 | rs->buf[0] = '\0'; | |
8066 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8067 | ||
8068 | return packet_check_result (rs->buf); | |
8069 | } | |
8070 | ||
8071 | static void | |
8072 | restore_remote_timeout (void *p) | |
8073 | { | |
8074 | int value = *(int *)p; | |
a744cf53 | 8075 | |
a76d924d DJ |
8076 | remote_timeout = value; |
8077 | } | |
8078 | ||
8079 | /* Flash writing can take quite some time. We'll set | |
8080 | effectively infinite timeout for flash operations. | |
8081 | In future, we'll need to decide on a better approach. */ | |
8082 | static const int remote_flash_timeout = 1000; | |
8083 | ||
8084 | static void | |
8085 | remote_flash_erase (struct target_ops *ops, | |
8086 | ULONGEST address, LONGEST length) | |
8087 | { | |
f5656ead | 8088 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
8089 | int saved_remote_timeout = remote_timeout; |
8090 | enum packet_result ret; | |
a76d924d DJ |
8091 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
8092 | &saved_remote_timeout); | |
a744cf53 | 8093 | |
a76d924d DJ |
8094 | remote_timeout = remote_flash_timeout; |
8095 | ||
8096 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8097 | phex (address, addr_size), |
a76d924d DJ |
8098 | phex (length, 4)); |
8099 | switch (ret) | |
8100 | { | |
8101 | case PACKET_UNKNOWN: | |
8102 | error (_("Remote target does not support flash erase")); | |
8103 | case PACKET_ERROR: | |
8104 | error (_("Error erasing flash with vFlashErase packet")); | |
8105 | default: | |
8106 | break; | |
8107 | } | |
8108 | ||
8109 | do_cleanups (back_to); | |
8110 | } | |
8111 | ||
9b409511 YQ |
8112 | static enum target_xfer_status |
8113 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
8114 | ULONGEST length, ULONGEST *xfered_len, | |
8115 | const gdb_byte *data) | |
a76d924d DJ |
8116 | { |
8117 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 8118 | enum target_xfer_status ret; |
a76d924d | 8119 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 8120 | &saved_remote_timeout); |
a76d924d DJ |
8121 | |
8122 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 8123 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 8124 | xfered_len,'X', 0); |
a76d924d DJ |
8125 | do_cleanups (back_to); |
8126 | ||
8127 | return ret; | |
8128 | } | |
8129 | ||
8130 | static void | |
8131 | remote_flash_done (struct target_ops *ops) | |
8132 | { | |
8133 | int saved_remote_timeout = remote_timeout; | |
8134 | int ret; | |
8135 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
8136 | &saved_remote_timeout); | |
8137 | ||
8138 | remote_timeout = remote_flash_timeout; | |
8139 | ret = remote_send_printf ("vFlashDone"); | |
8140 | do_cleanups (back_to); | |
8141 | ||
8142 | switch (ret) | |
8143 | { | |
8144 | case PACKET_UNKNOWN: | |
8145 | error (_("Remote target does not support vFlashDone")); | |
8146 | case PACKET_ERROR: | |
8147 | error (_("Error finishing flash operation")); | |
8148 | default: | |
8149 | break; | |
8150 | } | |
8151 | } | |
8152 | ||
c906108c | 8153 | static void |
fba45db2 | 8154 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
8155 | { |
8156 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8157 | } | |
8158 | \f | |
8159 | /* Stuff for dealing with the packets which are part of this protocol. | |
8160 | See comment at top of file for details. */ | |
8161 | ||
1927e618 PA |
8162 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8163 | error to higher layers. Called when a serial error is detected. | |
8164 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8165 | the system error message for errno at function entry and final dot |
8166 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8167 | |
8168 | static void | |
8169 | unpush_and_perror (const char *string) | |
8170 | { | |
d6cb50a2 | 8171 | int saved_errno = errno; |
1927e618 PA |
8172 | |
8173 | remote_unpush_target (); | |
d6cb50a2 JK |
8174 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8175 | safe_strerror (saved_errno)); | |
1927e618 PA |
8176 | } |
8177 | ||
0876f84a | 8178 | /* Read a single character from the remote end. */ |
c906108c SS |
8179 | |
8180 | static int | |
fba45db2 | 8181 | readchar (int timeout) |
c906108c SS |
8182 | { |
8183 | int ch; | |
5d93a237 | 8184 | struct remote_state *rs = get_remote_state (); |
c906108c | 8185 | |
5d93a237 | 8186 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 8187 | |
2acceee2 | 8188 | if (ch >= 0) |
0876f84a | 8189 | return ch; |
2acceee2 JM |
8190 | |
8191 | switch ((enum serial_rc) ch) | |
c906108c SS |
8192 | { |
8193 | case SERIAL_EOF: | |
78a095c3 | 8194 | remote_unpush_target (); |
598d3636 | 8195 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8196 | /* no return */ |
c906108c | 8197 | case SERIAL_ERROR: |
1927e618 PA |
8198 | unpush_and_perror (_("Remote communication error. " |
8199 | "Target disconnected.")); | |
2acceee2 | 8200 | /* no return */ |
c906108c | 8201 | case SERIAL_TIMEOUT: |
2acceee2 | 8202 | break; |
c906108c | 8203 | } |
2acceee2 | 8204 | return ch; |
c906108c SS |
8205 | } |
8206 | ||
c33e31fd PA |
8207 | /* Wrapper for serial_write that closes the target and throws if |
8208 | writing fails. */ | |
8209 | ||
8210 | static void | |
8211 | remote_serial_write (const char *str, int len) | |
8212 | { | |
5d93a237 TT |
8213 | struct remote_state *rs = get_remote_state (); |
8214 | ||
8215 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 8216 | { |
1927e618 PA |
8217 | unpush_and_perror (_("Remote communication error. " |
8218 | "Target disconnected.")); | |
c33e31fd PA |
8219 | } |
8220 | } | |
8221 | ||
6d820c5c DJ |
8222 | /* Send the command in *BUF to the remote machine, and read the reply |
8223 | into *BUF. Report an error if we get an error reply. Resize | |
8224 | *BUF using xrealloc if necessary to hold the result, and update | |
8225 | *SIZEOF_BUF. */ | |
c906108c SS |
8226 | |
8227 | static void | |
6d820c5c DJ |
8228 | remote_send (char **buf, |
8229 | long *sizeof_buf) | |
c906108c | 8230 | { |
6d820c5c | 8231 | putpkt (*buf); |
c2d11a7d | 8232 | getpkt (buf, sizeof_buf, 0); |
c906108c | 8233 | |
6d820c5c DJ |
8234 | if ((*buf)[0] == 'E') |
8235 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
8236 | } |
8237 | ||
6e5abd65 PA |
8238 | /* Return a pointer to an xmalloc'ed string representing an escaped |
8239 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
8240 | etc. The caller is responsible for releasing the returned | |
8241 | memory. */ | |
8242 | ||
8243 | static char * | |
8244 | escape_buffer (const char *buf, int n) | |
8245 | { | |
8246 | struct cleanup *old_chain; | |
8247 | struct ui_file *stb; | |
8248 | char *str; | |
6e5abd65 PA |
8249 | |
8250 | stb = mem_fileopen (); | |
8251 | old_chain = make_cleanup_ui_file_delete (stb); | |
8252 | ||
6ef284bd | 8253 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 8254 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
8255 | do_cleanups (old_chain); |
8256 | return str; | |
8257 | } | |
8258 | ||
c906108c SS |
8259 | /* Display a null-terminated packet on stdout, for debugging, using C |
8260 | string notation. */ | |
8261 | ||
8262 | static void | |
baa336ce | 8263 | print_packet (const char *buf) |
c906108c SS |
8264 | { |
8265 | puts_filtered ("\""); | |
43e526b9 | 8266 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
8267 | puts_filtered ("\""); |
8268 | } | |
8269 | ||
8270 | int | |
baa336ce | 8271 | putpkt (const char *buf) |
c906108c SS |
8272 | { |
8273 | return putpkt_binary (buf, strlen (buf)); | |
8274 | } | |
8275 | ||
8276 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 8277 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 8278 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
8279 | and for a possible /0 if we are debugging (remote_debug) and want |
8280 | to print the sent packet as a string. */ | |
c906108c SS |
8281 | |
8282 | static int | |
baa336ce | 8283 | putpkt_binary (const char *buf, int cnt) |
c906108c | 8284 | { |
2d717e4f | 8285 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8286 | int i; |
8287 | unsigned char csum = 0; | |
224c3ddb | 8288 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 8289 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 8290 | |
c906108c SS |
8291 | int ch; |
8292 | int tcount = 0; | |
8293 | char *p; | |
dd61ec5c | 8294 | char *message; |
c906108c | 8295 | |
e24a49d8 PA |
8296 | /* Catch cases like trying to read memory or listing threads while |
8297 | we're waiting for a stop reply. The remote server wouldn't be | |
8298 | ready to handle this request, so we'd hang and timeout. We don't | |
8299 | have to worry about this in synchronous mode, because in that | |
8300 | case it's not possible to issue a command while the target is | |
74531fed PA |
8301 | running. This is not a problem in non-stop mode, because in that |
8302 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
8303 | if (!target_is_non_stop_p () |
8304 | && target_is_async_p () | |
8305 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
8306 | { |
8307 | error (_("Cannot execute this command while the target is running.\n" | |
8308 | "Use the \"interrupt\" command to stop the target\n" | |
8309 | "and then try again.")); | |
8310 | } | |
e24a49d8 | 8311 | |
2d717e4f DJ |
8312 | /* We're sending out a new packet. Make sure we don't look at a |
8313 | stale cached response. */ | |
8314 | rs->cached_wait_status = 0; | |
8315 | ||
c906108c SS |
8316 | /* Copy the packet into buffer BUF2, encapsulating it |
8317 | and giving it a checksum. */ | |
8318 | ||
c906108c SS |
8319 | p = buf2; |
8320 | *p++ = '$'; | |
8321 | ||
8322 | for (i = 0; i < cnt; i++) | |
8323 | { | |
8324 | csum += buf[i]; | |
8325 | *p++ = buf[i]; | |
8326 | } | |
8327 | *p++ = '#'; | |
8328 | *p++ = tohex ((csum >> 4) & 0xf); | |
8329 | *p++ = tohex (csum & 0xf); | |
8330 | ||
8331 | /* Send it over and over until we get a positive ack. */ | |
8332 | ||
8333 | while (1) | |
8334 | { | |
8335 | int started_error_output = 0; | |
8336 | ||
8337 | if (remote_debug) | |
8338 | { | |
6e5abd65 PA |
8339 | struct cleanup *old_chain; |
8340 | char *str; | |
8341 | ||
c906108c | 8342 | *p = '\0'; |
6e5abd65 PA |
8343 | str = escape_buffer (buf2, p - buf2); |
8344 | old_chain = make_cleanup (xfree, str); | |
8345 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 8346 | gdb_flush (gdb_stdlog); |
6e5abd65 | 8347 | do_cleanups (old_chain); |
c906108c | 8348 | } |
c33e31fd | 8349 | remote_serial_write (buf2, p - buf2); |
c906108c | 8350 | |
a6f3e723 SL |
8351 | /* If this is a no acks version of the remote protocol, send the |
8352 | packet and move on. */ | |
8353 | if (rs->noack_mode) | |
8354 | break; | |
8355 | ||
74531fed PA |
8356 | /* Read until either a timeout occurs (-2) or '+' is read. |
8357 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8358 | while (1) |
8359 | { | |
8360 | ch = readchar (remote_timeout); | |
8361 | ||
c5aa993b | 8362 | if (remote_debug) |
c906108c SS |
8363 | { |
8364 | switch (ch) | |
8365 | { | |
8366 | case '+': | |
1216fa2c | 8367 | case '-': |
c906108c SS |
8368 | case SERIAL_TIMEOUT: |
8369 | case '$': | |
74531fed | 8370 | case '%': |
c906108c SS |
8371 | if (started_error_output) |
8372 | { | |
8373 | putchar_unfiltered ('\n'); | |
8374 | started_error_output = 0; | |
8375 | } | |
8376 | } | |
8377 | } | |
8378 | ||
8379 | switch (ch) | |
8380 | { | |
8381 | case '+': | |
8382 | if (remote_debug) | |
0f71a2f6 | 8383 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8384 | do_cleanups (old_chain); |
c906108c | 8385 | return 1; |
1216fa2c AC |
8386 | case '-': |
8387 | if (remote_debug) | |
8388 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8389 | /* FALLTHROUGH */ |
c906108c | 8390 | case SERIAL_TIMEOUT: |
c5aa993b | 8391 | tcount++; |
c906108c | 8392 | if (tcount > 3) |
a5c0808e PA |
8393 | { |
8394 | do_cleanups (old_chain); | |
8395 | return 0; | |
8396 | } | |
23860348 | 8397 | break; /* Retransmit buffer. */ |
c906108c SS |
8398 | case '$': |
8399 | { | |
40e3f985 | 8400 | if (remote_debug) |
2bc416ba | 8401 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8402 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8403 | /* It's probably an old response sent because an ACK |
8404 | was lost. Gobble up the packet and ack it so it | |
8405 | doesn't get retransmitted when we resend this | |
8406 | packet. */ | |
6d820c5c | 8407 | skip_frame (); |
c33e31fd | 8408 | remote_serial_write ("+", 1); |
23860348 | 8409 | continue; /* Now, go look for +. */ |
c906108c | 8410 | } |
74531fed PA |
8411 | |
8412 | case '%': | |
8413 | { | |
8414 | int val; | |
8415 | ||
8416 | /* If we got a notification, handle it, and go back to looking | |
8417 | for an ack. */ | |
8418 | /* We've found the start of a notification. Now | |
8419 | collect the data. */ | |
8420 | val = read_frame (&rs->buf, &rs->buf_size); | |
8421 | if (val >= 0) | |
8422 | { | |
8423 | if (remote_debug) | |
8424 | { | |
6e5abd65 PA |
8425 | struct cleanup *old_chain; |
8426 | char *str; | |
8427 | ||
8428 | str = escape_buffer (rs->buf, val); | |
8429 | old_chain = make_cleanup (xfree, str); | |
8430 | fprintf_unfiltered (gdb_stdlog, | |
8431 | " Notification received: %s\n", | |
8432 | str); | |
8433 | do_cleanups (old_chain); | |
74531fed | 8434 | } |
5965e028 | 8435 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8436 | /* We're in sync now, rewait for the ack. */ |
8437 | tcount = 0; | |
8438 | } | |
8439 | else | |
8440 | { | |
8441 | if (remote_debug) | |
8442 | { | |
8443 | if (!started_error_output) | |
8444 | { | |
8445 | started_error_output = 1; | |
8446 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8447 | } | |
8448 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8449 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8450 | } | |
8451 | } | |
8452 | continue; | |
8453 | } | |
8454 | /* fall-through */ | |
c906108c SS |
8455 | default: |
8456 | if (remote_debug) | |
8457 | { | |
8458 | if (!started_error_output) | |
8459 | { | |
8460 | started_error_output = 1; | |
0f71a2f6 | 8461 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8462 | } |
0f71a2f6 | 8463 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8464 | } |
8465 | continue; | |
8466 | } | |
23860348 | 8467 | break; /* Here to retransmit. */ |
c906108c SS |
8468 | } |
8469 | ||
8470 | #if 0 | |
8471 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8472 | able to get out next time we call QUIT, without anything as |
8473 | violent as interrupt_query. If we want to provide a way out of | |
8474 | here without getting to the next QUIT, it should be based on | |
8475 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8476 | if (quit_flag) |
8477 | { | |
8478 | quit_flag = 0; | |
8479 | interrupt_query (); | |
8480 | } | |
8481 | #endif | |
8482 | } | |
a5c0808e PA |
8483 | |
8484 | do_cleanups (old_chain); | |
a6f3e723 | 8485 | return 0; |
c906108c SS |
8486 | } |
8487 | ||
6d820c5c DJ |
8488 | /* Come here after finding the start of a frame when we expected an |
8489 | ack. Do our best to discard the rest of this packet. */ | |
8490 | ||
8491 | static void | |
8492 | skip_frame (void) | |
8493 | { | |
8494 | int c; | |
8495 | ||
8496 | while (1) | |
8497 | { | |
8498 | c = readchar (remote_timeout); | |
8499 | switch (c) | |
8500 | { | |
8501 | case SERIAL_TIMEOUT: | |
8502 | /* Nothing we can do. */ | |
8503 | return; | |
8504 | case '#': | |
8505 | /* Discard the two bytes of checksum and stop. */ | |
8506 | c = readchar (remote_timeout); | |
8507 | if (c >= 0) | |
8508 | c = readchar (remote_timeout); | |
8509 | ||
8510 | return; | |
8511 | case '*': /* Run length encoding. */ | |
8512 | /* Discard the repeat count. */ | |
8513 | c = readchar (remote_timeout); | |
8514 | if (c < 0) | |
8515 | return; | |
8516 | break; | |
8517 | default: | |
8518 | /* A regular character. */ | |
8519 | break; | |
8520 | } | |
8521 | } | |
8522 | } | |
8523 | ||
c906108c | 8524 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8525 | into *BUF, verifying the checksum, length, and handling run-length |
8526 | compression. NUL terminate the buffer. If there is not enough room, | |
8527 | expand *BUF using xrealloc. | |
c906108c | 8528 | |
c2d11a7d JM |
8529 | Returns -1 on error, number of characters in buffer (ignoring the |
8530 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8531 | SERIAL status indications). */ |
c2d11a7d JM |
8532 | |
8533 | static long | |
6d820c5c DJ |
8534 | read_frame (char **buf_p, |
8535 | long *sizeof_buf) | |
c906108c SS |
8536 | { |
8537 | unsigned char csum; | |
c2d11a7d | 8538 | long bc; |
c906108c | 8539 | int c; |
6d820c5c | 8540 | char *buf = *buf_p; |
a6f3e723 | 8541 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8542 | |
8543 | csum = 0; | |
c2d11a7d | 8544 | bc = 0; |
c906108c SS |
8545 | |
8546 | while (1) | |
8547 | { | |
8548 | c = readchar (remote_timeout); | |
c906108c SS |
8549 | switch (c) |
8550 | { | |
8551 | case SERIAL_TIMEOUT: | |
8552 | if (remote_debug) | |
0f71a2f6 | 8553 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8554 | return -1; |
c906108c SS |
8555 | case '$': |
8556 | if (remote_debug) | |
0f71a2f6 JM |
8557 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8558 | gdb_stdlog); | |
23860348 | 8559 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8560 | case '#': |
8561 | { | |
8562 | unsigned char pktcsum; | |
e1b09194 AC |
8563 | int check_0 = 0; |
8564 | int check_1 = 0; | |
c906108c | 8565 | |
c2d11a7d | 8566 | buf[bc] = '\0'; |
c906108c | 8567 | |
e1b09194 AC |
8568 | check_0 = readchar (remote_timeout); |
8569 | if (check_0 >= 0) | |
8570 | check_1 = readchar (remote_timeout); | |
802188a7 | 8571 | |
e1b09194 AC |
8572 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8573 | { | |
8574 | if (remote_debug) | |
2bc416ba | 8575 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8576 | gdb_stdlog); |
e1b09194 AC |
8577 | return -1; |
8578 | } | |
8579 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8580 | { |
8581 | if (remote_debug) | |
2bc416ba | 8582 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8583 | gdb_stdlog); |
40e3f985 FN |
8584 | return -1; |
8585 | } | |
c906108c | 8586 | |
a6f3e723 SL |
8587 | /* Don't recompute the checksum; with no ack packets we |
8588 | don't have any way to indicate a packet retransmission | |
8589 | is necessary. */ | |
8590 | if (rs->noack_mode) | |
8591 | return bc; | |
8592 | ||
e1b09194 | 8593 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8594 | if (csum == pktcsum) |
c2d11a7d | 8595 | return bc; |
c906108c | 8596 | |
c5aa993b | 8597 | if (remote_debug) |
c906108c | 8598 | { |
6e5abd65 PA |
8599 | struct cleanup *old_chain; |
8600 | char *str; | |
8601 | ||
8602 | str = escape_buffer (buf, bc); | |
8603 | old_chain = make_cleanup (xfree, str); | |
8604 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8605 | "Bad checksum, sentsum=0x%x, " |
8606 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8607 | pktcsum, csum, str); |
8608 | do_cleanups (old_chain); | |
c906108c | 8609 | } |
c2d11a7d | 8610 | /* Number of characters in buffer ignoring trailing |
23860348 | 8611 | NULL. */ |
c2d11a7d | 8612 | return -1; |
c906108c | 8613 | } |
23860348 | 8614 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8615 | { |
8616 | int repeat; | |
c906108c | 8617 | |
a744cf53 | 8618 | csum += c; |
b4501125 AC |
8619 | c = readchar (remote_timeout); |
8620 | csum += c; | |
23860348 | 8621 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8622 | |
23860348 | 8623 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8624 | |
6d820c5c | 8625 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8626 | { |
6d820c5c DJ |
8627 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8628 | { | |
8629 | /* Make some more room in the buffer. */ | |
8630 | *sizeof_buf += repeat; | |
224c3ddb | 8631 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8632 | buf = *buf_p; |
8633 | } | |
8634 | ||
c2d11a7d JM |
8635 | memset (&buf[bc], buf[bc - 1], repeat); |
8636 | bc += repeat; | |
c2c6d25f JM |
8637 | continue; |
8638 | } | |
8639 | ||
c2d11a7d | 8640 | buf[bc] = '\0'; |
6d820c5c | 8641 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8642 | return -1; |
c2c6d25f | 8643 | } |
c906108c | 8644 | default: |
6d820c5c | 8645 | if (bc >= *sizeof_buf - 1) |
c906108c | 8646 | { |
6d820c5c DJ |
8647 | /* Make some more room in the buffer. */ |
8648 | *sizeof_buf *= 2; | |
224c3ddb | 8649 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 8650 | buf = *buf_p; |
c906108c SS |
8651 | } |
8652 | ||
6d820c5c DJ |
8653 | buf[bc++] = c; |
8654 | csum += c; | |
8655 | continue; | |
c906108c SS |
8656 | } |
8657 | } | |
8658 | } | |
8659 | ||
8660 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8661 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8662 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8663 | rather than timing out; this is used (in synchronous mode) to wait | |
8664 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8665 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8666 | don't have to change all the calls to getpkt to deal with the | |
8667 | return value, because at the moment I don't know what the right | |
23860348 | 8668 | thing to do it for those. */ |
c906108c | 8669 | void |
6d820c5c DJ |
8670 | getpkt (char **buf, |
8671 | long *sizeof_buf, | |
c2d11a7d | 8672 | int forever) |
d9fcf2fb JM |
8673 | { |
8674 | int timed_out; | |
8675 | ||
8676 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8677 | } | |
8678 | ||
8679 | ||
8680 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8681 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8682 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8683 | rather than timing out; this is used (in synchronous mode) to wait | |
8684 | for a target that is is executing user code to stop. If FOREVER == | |
8685 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8686 | indication of this to the caller. Otherwise return the number of |
8687 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8688 | enough reason to return to the caller. *IS_NOTIF is an output |
8689 | boolean that indicates whether *BUF holds a notification or not | |
8690 | (a regular packet). */ | |
74531fed | 8691 | |
3172dc30 | 8692 | static int |
74531fed | 8693 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8694 | int expecting_notif, int *is_notif) |
c906108c | 8695 | { |
2d717e4f | 8696 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8697 | int c; |
8698 | int tries; | |
8699 | int timeout; | |
df4b58fe | 8700 | int val = -1; |
c906108c | 8701 | |
2d717e4f DJ |
8702 | /* We're reading a new response. Make sure we don't look at a |
8703 | previously cached response. */ | |
8704 | rs->cached_wait_status = 0; | |
8705 | ||
6d820c5c | 8706 | strcpy (*buf, "timeout"); |
c906108c SS |
8707 | |
8708 | if (forever) | |
74531fed PA |
8709 | timeout = watchdog > 0 ? watchdog : -1; |
8710 | else if (expecting_notif) | |
8711 | timeout = 0; /* There should already be a char in the buffer. If | |
8712 | not, bail out. */ | |
c906108c SS |
8713 | else |
8714 | timeout = remote_timeout; | |
8715 | ||
8716 | #define MAX_TRIES 3 | |
8717 | ||
74531fed PA |
8718 | /* Process any number of notifications, and then return when |
8719 | we get a packet. */ | |
8720 | for (;;) | |
c906108c | 8721 | { |
d9c43928 | 8722 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8723 | times. */ |
8724 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8725 | { |
74531fed PA |
8726 | /* This can loop forever if the remote side sends us |
8727 | characters continuously, but if it pauses, we'll get | |
8728 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8729 | we'll count that as a retry. | |
8730 | ||
8731 | Note that even when forever is set, we will only wait | |
8732 | forever prior to the start of a packet. After that, we | |
8733 | expect characters to arrive at a brisk pace. They should | |
8734 | show up within remote_timeout intervals. */ | |
8735 | do | |
8736 | c = readchar (timeout); | |
8737 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8738 | |
8739 | if (c == SERIAL_TIMEOUT) | |
8740 | { | |
74531fed PA |
8741 | if (expecting_notif) |
8742 | return -1; /* Don't complain, it's normal to not get | |
8743 | anything in this case. */ | |
8744 | ||
23860348 | 8745 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8746 | { |
2acceee2 | 8747 | QUIT; |
78a095c3 | 8748 | remote_unpush_target (); |
598d3636 JK |
8749 | throw_error (TARGET_CLOSE_ERROR, |
8750 | _("Watchdog timeout has expired. " | |
8751 | "Target detached.")); | |
c906108c | 8752 | } |
c906108c | 8753 | if (remote_debug) |
0f71a2f6 | 8754 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8755 | } |
74531fed PA |
8756 | else |
8757 | { | |
8758 | /* We've found the start of a packet or notification. | |
8759 | Now collect the data. */ | |
8760 | val = read_frame (buf, sizeof_buf); | |
8761 | if (val >= 0) | |
8762 | break; | |
8763 | } | |
8764 | ||
c33e31fd | 8765 | remote_serial_write ("-", 1); |
c906108c | 8766 | } |
c906108c | 8767 | |
74531fed PA |
8768 | if (tries > MAX_TRIES) |
8769 | { | |
8770 | /* We have tried hard enough, and just can't receive the | |
8771 | packet/notification. Give up. */ | |
8772 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8773 | |
74531fed PA |
8774 | /* Skip the ack char if we're in no-ack mode. */ |
8775 | if (!rs->noack_mode) | |
c33e31fd | 8776 | remote_serial_write ("+", 1); |
74531fed PA |
8777 | return -1; |
8778 | } | |
c906108c | 8779 | |
74531fed PA |
8780 | /* If we got an ordinary packet, return that to our caller. */ |
8781 | if (c == '$') | |
c906108c SS |
8782 | { |
8783 | if (remote_debug) | |
43e526b9 | 8784 | { |
6e5abd65 PA |
8785 | struct cleanup *old_chain; |
8786 | char *str; | |
8787 | ||
8788 | str = escape_buffer (*buf, val); | |
8789 | old_chain = make_cleanup (xfree, str); | |
8790 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8791 | do_cleanups (old_chain); | |
43e526b9 | 8792 | } |
a6f3e723 SL |
8793 | |
8794 | /* Skip the ack char if we're in no-ack mode. */ | |
8795 | if (!rs->noack_mode) | |
c33e31fd | 8796 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8797 | if (is_notif != NULL) |
8798 | *is_notif = 0; | |
0876f84a | 8799 | return val; |
c906108c SS |
8800 | } |
8801 | ||
74531fed PA |
8802 | /* If we got a notification, handle it, and go back to looking |
8803 | for a packet. */ | |
8804 | else | |
8805 | { | |
8806 | gdb_assert (c == '%'); | |
8807 | ||
8808 | if (remote_debug) | |
8809 | { | |
6e5abd65 PA |
8810 | struct cleanup *old_chain; |
8811 | char *str; | |
8812 | ||
8813 | str = escape_buffer (*buf, val); | |
8814 | old_chain = make_cleanup (xfree, str); | |
8815 | fprintf_unfiltered (gdb_stdlog, | |
8816 | " Notification received: %s\n", | |
8817 | str); | |
8818 | do_cleanups (old_chain); | |
74531fed | 8819 | } |
fee9eda9 YQ |
8820 | if (is_notif != NULL) |
8821 | *is_notif = 1; | |
c906108c | 8822 | |
5965e028 | 8823 | handle_notification (rs->notif_state, *buf); |
c906108c | 8824 | |
74531fed | 8825 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8826 | |
74531fed | 8827 | if (expecting_notif) |
fee9eda9 | 8828 | return val; |
74531fed PA |
8829 | } |
8830 | } | |
8831 | } | |
8832 | ||
8833 | static int | |
8834 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8835 | { | |
fee9eda9 | 8836 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8837 | } |
8838 | ||
8839 | static int | |
fee9eda9 YQ |
8840 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8841 | int *is_notif) | |
74531fed | 8842 | { |
fee9eda9 YQ |
8843 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8844 | is_notif); | |
c906108c | 8845 | } |
74531fed | 8846 | |
cbb8991c DB |
8847 | /* Check whether EVENT is a fork event for the process specified |
8848 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8849 | ||
8850 | static int | |
8851 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8852 | QUEUE_ITER (stop_reply_p) *iter, | |
8853 | stop_reply_p event, | |
8854 | void *data) | |
8855 | { | |
19ba03f4 | 8856 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
8857 | int parent_pid = *(int *) param->input; |
8858 | ||
8859 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8860 | { | |
8861 | struct remote_state *rs = get_remote_state (); | |
8862 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8863 | int res; | |
8864 | ||
8865 | res = remote_vkill (child_pid, rs); | |
8866 | if (res != 0) | |
8867 | error (_("Can't kill fork child process %d"), child_pid); | |
8868 | } | |
8869 | ||
8870 | return 1; | |
8871 | } | |
8872 | ||
8873 | /* Kill any new fork children of process PID that haven't been | |
8874 | processed by follow_fork. */ | |
8875 | ||
8876 | static void | |
8877 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8878 | { | |
8879 | struct thread_info *thread; | |
8880 | struct notif_client *notif = ¬if_client_stop; | |
8881 | struct queue_iter_param param; | |
8882 | ||
8883 | /* Kill the fork child threads of any threads in process PID | |
8884 | that are stopped at a fork event. */ | |
8885 | ALL_NON_EXITED_THREADS (thread) | |
8886 | { | |
8887 | struct target_waitstatus *ws = &thread->pending_follow; | |
8888 | ||
8889 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8890 | { | |
8891 | struct remote_state *rs = get_remote_state (); | |
8892 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8893 | int res; | |
8894 | ||
8895 | res = remote_vkill (child_pid, rs); | |
8896 | if (res != 0) | |
8897 | error (_("Can't kill fork child process %d"), child_pid); | |
8898 | } | |
8899 | } | |
8900 | ||
8901 | /* Check for any pending fork events (not reported or processed yet) | |
8902 | in process PID and kill those fork child threads as well. */ | |
8903 | remote_notif_get_pending_events (notif); | |
8904 | param.input = &pid; | |
8905 | param.output = NULL; | |
8906 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8907 | kill_child_of_pending_fork, ¶m); | |
8908 | } | |
8909 | ||
c906108c | 8910 | \f |
8020350c DB |
8911 | /* Target hook to kill the current inferior. */ |
8912 | ||
c906108c | 8913 | static void |
7d85a9c0 | 8914 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8915 | { |
8020350c DB |
8916 | int res = -1; |
8917 | int pid = ptid_get_pid (inferior_ptid); | |
8918 | struct remote_state *rs = get_remote_state (); | |
0fdf84ca | 8919 | |
8020350c | 8920 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 8921 | { |
8020350c DB |
8922 | /* If we're stopped while forking and we haven't followed yet, |
8923 | kill the child task. We need to do this before killing the | |
8924 | parent task because if this is a vfork then the parent will | |
8925 | be sleeping. */ | |
8926 | kill_new_fork_children (pid, rs); | |
8927 | ||
8928 | res = remote_vkill (pid, rs); | |
8929 | if (res == 0) | |
0fdf84ca | 8930 | { |
8020350c | 8931 | target_mourn_inferior (); |
0fdf84ca PA |
8932 | return; |
8933 | } | |
8020350c | 8934 | } |
0fdf84ca | 8935 | |
8020350c DB |
8936 | /* If we are in 'target remote' mode and we are killing the only |
8937 | inferior, then we will tell gdbserver to exit and unpush the | |
8938 | target. */ | |
8939 | if (res == -1 && !remote_multi_process_p (rs) | |
8940 | && number_of_live_inferiors () == 1) | |
8941 | { | |
8942 | remote_kill_k (); | |
8943 | ||
8944 | /* We've killed the remote end, we get to mourn it. If we are | |
8945 | not in extended mode, mourning the inferior also unpushes | |
8946 | remote_ops from the target stack, which closes the remote | |
8947 | connection. */ | |
8948 | target_mourn_inferior (); | |
8949 | ||
8950 | return; | |
0fdf84ca | 8951 | } |
43ff13b4 | 8952 | |
8020350c | 8953 | error (_("Can't kill process")); |
43ff13b4 JM |
8954 | } |
8955 | ||
8020350c DB |
8956 | /* Send a kill request to the target using the 'vKill' packet. */ |
8957 | ||
82f73884 PA |
8958 | static int |
8959 | remote_vkill (int pid, struct remote_state *rs) | |
8960 | { | |
4082afcc | 8961 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8962 | return -1; |
8963 | ||
8964 | /* Tell the remote target to detach. */ | |
bba74b36 | 8965 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8966 | putpkt (rs->buf); |
8967 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8968 | ||
4082afcc PA |
8969 | switch (packet_ok (rs->buf, |
8970 | &remote_protocol_packets[PACKET_vKill])) | |
8971 | { | |
8972 | case PACKET_OK: | |
8973 | return 0; | |
8974 | case PACKET_ERROR: | |
8975 | return 1; | |
8976 | case PACKET_UNKNOWN: | |
8977 | return -1; | |
8978 | default: | |
8979 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8980 | } | |
82f73884 PA |
8981 | } |
8982 | ||
8020350c DB |
8983 | /* Send a kill request to the target using the 'k' packet. */ |
8984 | ||
82f73884 | 8985 | static void |
8020350c | 8986 | remote_kill_k (void) |
82f73884 | 8987 | { |
8020350c DB |
8988 | /* Catch errors so the user can quit from gdb even when we |
8989 | aren't on speaking terms with the remote system. */ | |
8990 | TRY | |
82f73884 | 8991 | { |
82f73884 | 8992 | putpkt ("k"); |
82f73884 | 8993 | } |
8020350c DB |
8994 | CATCH (ex, RETURN_MASK_ERROR) |
8995 | { | |
8996 | if (ex.error == TARGET_CLOSE_ERROR) | |
8997 | { | |
8998 | /* If we got an (EOF) error that caused the target | |
8999 | to go away, then we're done, that's what we wanted. | |
9000 | "k" is susceptible to cause a premature EOF, given | |
9001 | that the remote server isn't actually required to | |
9002 | reply to "k", and it can happen that it doesn't | |
9003 | even get to reply ACK to the "k". */ | |
9004 | return; | |
9005 | } | |
82f73884 | 9006 | |
8020350c DB |
9007 | /* Otherwise, something went wrong. We didn't actually kill |
9008 | the target. Just propagate the exception, and let the | |
9009 | user or higher layers decide what to do. */ | |
9010 | throw_exception (ex); | |
9011 | } | |
9012 | END_CATCH | |
82f73884 PA |
9013 | } |
9014 | ||
c906108c | 9015 | static void |
20f796c9 | 9016 | remote_mourn (struct target_ops *target) |
c906108c | 9017 | { |
8020350c | 9018 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9019 | |
8020350c DB |
9020 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9021 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9022 | { | |
9023 | unpush_target (target); | |
c906108c | 9024 | |
8020350c DB |
9025 | /* remote_close takes care of doing most of the clean up. */ |
9026 | generic_mourn_inferior (); | |
9027 | return; | |
9028 | } | |
c906108c | 9029 | |
e24a49d8 PA |
9030 | /* In case we got here due to an error, but we're going to stay |
9031 | connected. */ | |
9032 | rs->waiting_for_stop_reply = 0; | |
9033 | ||
dc1981d7 PA |
9034 | /* If the current general thread belonged to the process we just |
9035 | detached from or has exited, the remote side current general | |
9036 | thread becomes undefined. Considering a case like this: | |
9037 | ||
9038 | - We just got here due to a detach. | |
9039 | - The process that we're detaching from happens to immediately | |
9040 | report a global breakpoint being hit in non-stop mode, in the | |
9041 | same thread we had selected before. | |
9042 | - GDB attaches to this process again. | |
9043 | - This event happens to be the next event we handle. | |
9044 | ||
9045 | GDB would consider that the current general thread didn't need to | |
9046 | be set on the stub side (with Hg), since for all it knew, | |
9047 | GENERAL_THREAD hadn't changed. | |
9048 | ||
9049 | Notice that although in all-stop mode, the remote server always | |
9050 | sets the current thread to the thread reporting the stop event, | |
9051 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9052 | not* change the current thread when reporting a breakpoint hit, | |
9053 | due to the decoupling of event reporting and event handling. | |
9054 | ||
9055 | To keep things simple, we always invalidate our notion of the | |
9056 | current thread. */ | |
47f8a51d | 9057 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9058 | |
8020350c | 9059 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9060 | generic_mourn_inferior (); |
9061 | ||
d729566a | 9062 | if (!have_inferiors ()) |
2d717e4f | 9063 | { |
82f73884 PA |
9064 | if (!remote_multi_process_p (rs)) |
9065 | { | |
9066 | /* Check whether the target is running now - some remote stubs | |
9067 | automatically restart after kill. */ | |
9068 | putpkt ("?"); | |
9069 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9070 | ||
9071 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9072 | { | |
3e43a32a MS |
9073 | /* Assume that the target has been restarted. Set |
9074 | inferior_ptid so that bits of core GDB realizes | |
9075 | there's something here, e.g., so that the user can | |
9076 | say "kill" again. */ | |
82f73884 PA |
9077 | inferior_ptid = magic_null_ptid; |
9078 | } | |
82f73884 | 9079 | } |
2d717e4f DJ |
9080 | } |
9081 | } | |
c906108c | 9082 | |
03583c20 | 9083 | static int |
2bfc0540 | 9084 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 9085 | { |
4082afcc | 9086 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9087 | } |
9088 | ||
9089 | static void | |
9090 | extended_remote_disable_randomization (int val) | |
9091 | { | |
9092 | struct remote_state *rs = get_remote_state (); | |
9093 | char *reply; | |
9094 | ||
bba74b36 YQ |
9095 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
9096 | val); | |
03583c20 UW |
9097 | putpkt (rs->buf); |
9098 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9099 | if (*reply == '\0') | |
9100 | error (_("Target does not support QDisableRandomization.")); | |
9101 | if (strcmp (reply, "OK") != 0) | |
9102 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9103 | } | |
9104 | ||
2d717e4f DJ |
9105 | static int |
9106 | extended_remote_run (char *args) | |
9107 | { | |
9108 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9109 | int len; |
94585166 | 9110 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9111 | |
2d717e4f DJ |
9112 | /* If the user has disabled vRun support, or we have detected that |
9113 | support is not available, do not try it. */ | |
4082afcc | 9114 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9115 | return -1; |
424163ea | 9116 | |
2d717e4f DJ |
9117 | strcpy (rs->buf, "vRun;"); |
9118 | len = strlen (rs->buf); | |
c906108c | 9119 | |
2d717e4f DJ |
9120 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9121 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
9122 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
9123 | strlen (remote_exec_file)); | |
2d717e4f | 9124 | |
d1a41061 | 9125 | gdb_assert (args != NULL); |
2d717e4f DJ |
9126 | if (*args) |
9127 | { | |
9128 | struct cleanup *back_to; | |
9129 | int i; | |
9130 | char **argv; | |
9131 | ||
d1a41061 | 9132 | argv = gdb_buildargv (args); |
6e366df1 | 9133 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
9134 | for (i = 0; argv[i] != NULL; i++) |
9135 | { | |
9136 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9137 | error (_("Argument list too long for run packet")); | |
9138 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
9139 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
9140 | strlen (argv[i])); | |
2d717e4f DJ |
9141 | } |
9142 | do_cleanups (back_to); | |
9143 | } | |
9144 | ||
9145 | rs->buf[len++] = '\0'; | |
9146 | ||
9147 | putpkt (rs->buf); | |
9148 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9149 | ||
4082afcc | 9150 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9151 | { |
4082afcc | 9152 | case PACKET_OK: |
3405876a | 9153 | /* We have a wait response. All is well. */ |
2d717e4f | 9154 | return 0; |
4082afcc PA |
9155 | case PACKET_UNKNOWN: |
9156 | return -1; | |
9157 | case PACKET_ERROR: | |
2d717e4f DJ |
9158 | if (remote_exec_file[0] == '\0') |
9159 | error (_("Running the default executable on the remote target failed; " | |
9160 | "try \"set remote exec-file\"?")); | |
9161 | else | |
9162 | error (_("Running \"%s\" on the remote target failed"), | |
9163 | remote_exec_file); | |
4082afcc PA |
9164 | default: |
9165 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9166 | } |
c906108c SS |
9167 | } |
9168 | ||
2d717e4f DJ |
9169 | /* In the extended protocol we want to be able to do things like |
9170 | "run" and have them basically work as expected. So we need | |
9171 | a special create_inferior function. We support changing the | |
9172 | executable file and the command line arguments, but not the | |
9173 | environment. */ | |
9174 | ||
43ff13b4 | 9175 | static void |
77a19445 TT |
9176 | extended_remote_create_inferior (struct target_ops *ops, |
9177 | char *exec_file, char *args, | |
9178 | char **env, int from_tty) | |
43ff13b4 | 9179 | { |
3405876a PA |
9180 | int run_worked; |
9181 | char *stop_reply; | |
9182 | struct remote_state *rs = get_remote_state (); | |
94585166 | 9183 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 9184 | |
43ff13b4 | 9185 | /* If running asynchronously, register the target file descriptor |
23860348 | 9186 | with the event loop. */ |
75c99385 | 9187 | if (target_can_async_p ()) |
6a3753b3 | 9188 | target_async (1); |
43ff13b4 | 9189 | |
03583c20 | 9190 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 9191 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
9192 | extended_remote_disable_randomization (disable_randomization); |
9193 | ||
43ff13b4 | 9194 | /* Now restart the remote server. */ |
3405876a PA |
9195 | run_worked = extended_remote_run (args) != -1; |
9196 | if (!run_worked) | |
2d717e4f DJ |
9197 | { |
9198 | /* vRun was not supported. Fail if we need it to do what the | |
9199 | user requested. */ | |
9200 | if (remote_exec_file[0]) | |
9201 | error (_("Remote target does not support \"set remote exec-file\"")); | |
9202 | if (args[0]) | |
9203 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 9204 | |
2d717e4f DJ |
9205 | /* Fall back to "R". */ |
9206 | extended_remote_restart (); | |
9207 | } | |
424163ea | 9208 | |
6c95b8df PA |
9209 | if (!have_inferiors ()) |
9210 | { | |
9211 | /* Clean up from the last time we ran, before we mark the target | |
9212 | running again. This will mark breakpoints uninserted, and | |
9213 | get_offsets may insert breakpoints. */ | |
9214 | init_thread_list (); | |
9215 | init_wait_for_inferior (); | |
9216 | } | |
45280a52 | 9217 | |
3405876a PA |
9218 | /* vRun's success return is a stop reply. */ |
9219 | stop_reply = run_worked ? rs->buf : NULL; | |
9220 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 9221 | |
2d717e4f DJ |
9222 | /* Get updated offsets, if the stub uses qOffsets. */ |
9223 | get_offsets (); | |
2d717e4f | 9224 | } |
c906108c | 9225 | \f |
c5aa993b | 9226 | |
b775012e LM |
9227 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
9228 | the list of conditions (in agent expression bytecode format), if any, the | |
9229 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 9230 | started from BUF and ended at BUF_END. */ |
b775012e LM |
9231 | |
9232 | static int | |
9233 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
9234 | struct bp_target_info *bp_tgt, char *buf, |
9235 | char *buf_end) | |
b775012e LM |
9236 | { |
9237 | struct agent_expr *aexpr = NULL; | |
9238 | int i, ix; | |
9239 | char *pkt; | |
9240 | char *buf_start = buf; | |
9241 | ||
9242 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
9243 | return 0; | |
9244 | ||
9245 | buf += strlen (buf); | |
bba74b36 | 9246 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
9247 | buf++; |
9248 | ||
9249 | /* Send conditions to the target and free the vector. */ | |
9250 | for (ix = 0; | |
9251 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
9252 | ix++) | |
9253 | { | |
bba74b36 | 9254 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
9255 | buf += strlen (buf); |
9256 | for (i = 0; i < aexpr->len; ++i) | |
9257 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9258 | *buf = '\0'; | |
9259 | } | |
b775012e LM |
9260 | return 0; |
9261 | } | |
9262 | ||
d3ce09f5 SS |
9263 | static void |
9264 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
9265 | struct bp_target_info *bp_tgt, char *buf) | |
9266 | { | |
9267 | struct agent_expr *aexpr = NULL; | |
9268 | int i, ix; | |
9269 | ||
9270 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9271 | return; | |
9272 | ||
9273 | buf += strlen (buf); | |
9274 | ||
9275 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
9276 | buf += strlen (buf); | |
9277 | ||
9278 | /* Concatenate all the agent expressions that are commands into the | |
9279 | cmds parameter. */ | |
9280 | for (ix = 0; | |
9281 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
9282 | ix++) | |
9283 | { | |
9284 | sprintf (buf, "X%x,", aexpr->len); | |
9285 | buf += strlen (buf); | |
9286 | for (i = 0; i < aexpr->len; ++i) | |
9287 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
9288 | *buf = '\0'; | |
9289 | } | |
d3ce09f5 SS |
9290 | } |
9291 | ||
8181d85f DJ |
9292 | /* Insert a breakpoint. On targets that have software breakpoint |
9293 | support, we ask the remote target to do the work; on targets | |
9294 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
9295 | |
9296 | static int | |
3db08215 MM |
9297 | remote_insert_breakpoint (struct target_ops *ops, |
9298 | struct gdbarch *gdbarch, | |
a6d9a66e | 9299 | struct bp_target_info *bp_tgt) |
c906108c | 9300 | { |
d471ea57 AC |
9301 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
9302 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
9303 | fails, and the user has explicitly requested the Z support then | |
23860348 | 9304 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 9305 | |
4082afcc | 9306 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9307 | { |
0d5ed153 | 9308 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9309 | struct remote_state *rs; |
bba74b36 | 9310 | char *p, *endbuf; |
7c0f6dcc | 9311 | int bpsize; |
b775012e | 9312 | struct condition_list *cond = NULL; |
4fff2411 | 9313 | |
28439a30 PA |
9314 | /* Make sure the remote is pointing at the right process, if |
9315 | necessary. */ | |
9316 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9317 | set_general_process (); | |
9318 | ||
a1dcb23a | 9319 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
9320 | |
9321 | rs = get_remote_state (); | |
9322 | p = rs->buf; | |
bba74b36 | 9323 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9324 | |
96baa820 JM |
9325 | *(p++) = 'Z'; |
9326 | *(p++) = '0'; | |
9327 | *(p++) = ','; | |
7c0f6dcc | 9328 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 9329 | p += hexnumstr (p, addr); |
bba74b36 | 9330 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 9331 | |
efcc2da7 | 9332 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 9333 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9334 | |
78eff0ec | 9335 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
9336 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9337 | ||
6d820c5c DJ |
9338 | putpkt (rs->buf); |
9339 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9340 | |
6d820c5c | 9341 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 9342 | { |
d471ea57 AC |
9343 | case PACKET_ERROR: |
9344 | return -1; | |
9345 | case PACKET_OK: | |
7c0f6dcc JL |
9346 | bp_tgt->placed_address = addr; |
9347 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9348 | return 0; |
9349 | case PACKET_UNKNOWN: | |
9350 | break; | |
96baa820 JM |
9351 | } |
9352 | } | |
c906108c | 9353 | |
0000e5cc PA |
9354 | /* If this breakpoint has target-side commands but this stub doesn't |
9355 | support Z0 packets, throw error. */ | |
9356 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9357 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
9358 | Target doesn't support breakpoints that have target side commands.")); | |
9359 | ||
3db08215 | 9360 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9361 | } |
9362 | ||
9363 | static int | |
3db08215 MM |
9364 | remote_remove_breakpoint (struct target_ops *ops, |
9365 | struct gdbarch *gdbarch, | |
a6d9a66e | 9366 | struct bp_target_info *bp_tgt) |
c906108c | 9367 | { |
8181d85f | 9368 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9369 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9370 | |
4082afcc | 9371 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9372 | { |
6d820c5c | 9373 | char *p = rs->buf; |
bba74b36 | 9374 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9375 | |
28439a30 PA |
9376 | /* Make sure the remote is pointing at the right process, if |
9377 | necessary. */ | |
9378 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9379 | set_general_process (); | |
9380 | ||
96baa820 JM |
9381 | *(p++) = 'z'; |
9382 | *(p++) = '0'; | |
9383 | *(p++) = ','; | |
9384 | ||
8181d85f DJ |
9385 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9386 | p += hexnumstr (p, addr); | |
bba74b36 | 9387 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 9388 | |
6d820c5c DJ |
9389 | putpkt (rs->buf); |
9390 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9391 | |
6d820c5c | 9392 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9393 | } |
9394 | ||
3db08215 | 9395 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9396 | } |
9397 | ||
f486487f | 9398 | static enum Z_packet_type |
d471ea57 AC |
9399 | watchpoint_to_Z_packet (int type) |
9400 | { | |
9401 | switch (type) | |
9402 | { | |
9403 | case hw_write: | |
bb858e6a | 9404 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9405 | break; |
9406 | case hw_read: | |
bb858e6a | 9407 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9408 | break; |
9409 | case hw_access: | |
bb858e6a | 9410 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9411 | break; |
9412 | default: | |
8e65ff28 | 9413 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9414 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9415 | } |
9416 | } | |
9417 | ||
3c3bea1c | 9418 | static int |
f486487f SM |
9419 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9420 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9421 | { |
d01949b6 | 9422 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9423 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9424 | char *p; |
d471ea57 | 9425 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9426 | |
4082afcc | 9427 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9428 | return 1; |
802188a7 | 9429 | |
28439a30 PA |
9430 | /* Make sure the remote is pointing at the right process, if |
9431 | necessary. */ | |
9432 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9433 | set_general_process (); | |
9434 | ||
bba74b36 | 9435 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9436 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9437 | addr = remote_address_masked (addr); |
9438 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9439 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9440 | |
6d820c5c DJ |
9441 | putpkt (rs->buf); |
9442 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9443 | |
6d820c5c | 9444 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9445 | { |
9446 | case PACKET_ERROR: | |
d471ea57 | 9447 | return -1; |
85d721b8 PA |
9448 | case PACKET_UNKNOWN: |
9449 | return 1; | |
d471ea57 AC |
9450 | case PACKET_OK: |
9451 | return 0; | |
9452 | } | |
8e65ff28 | 9453 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9454 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9455 | } |
9456 | ||
283002cf MR |
9457 | static int |
9458 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9459 | CORE_ADDR start, int length) | |
9460 | { | |
9461 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9462 | ||
9463 | return diff < length; | |
9464 | } | |
9465 | ||
d471ea57 | 9466 | |
3c3bea1c | 9467 | static int |
f486487f SM |
9468 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9469 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9470 | { |
d01949b6 | 9471 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9472 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9473 | char *p; |
d471ea57 AC |
9474 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9475 | ||
4082afcc | 9476 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9477 | return -1; |
802188a7 | 9478 | |
28439a30 PA |
9479 | /* Make sure the remote is pointing at the right process, if |
9480 | necessary. */ | |
9481 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9482 | set_general_process (); | |
9483 | ||
bba74b36 | 9484 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9485 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9486 | addr = remote_address_masked (addr); |
9487 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9488 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9489 | putpkt (rs->buf); |
9490 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9491 | |
6d820c5c | 9492 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9493 | { |
9494 | case PACKET_ERROR: | |
9495 | case PACKET_UNKNOWN: | |
9496 | return -1; | |
9497 | case PACKET_OK: | |
9498 | return 0; | |
9499 | } | |
8e65ff28 | 9500 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9501 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9502 | } |
9503 | ||
3c3bea1c | 9504 | |
501eef12 | 9505 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9506 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9507 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9508 | |
480a3f21 | 9509 | static int |
31568a15 TT |
9510 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9511 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9512 | { |
9513 | if (remote_hw_watchpoint_length_limit == 0) | |
9514 | return 0; | |
9515 | else if (remote_hw_watchpoint_length_limit < 0) | |
9516 | return 1; | |
9517 | else if (len <= remote_hw_watchpoint_length_limit) | |
9518 | return 1; | |
9519 | else | |
9520 | return 0; | |
9521 | } | |
9522 | ||
b9362cc7 | 9523 | static int |
5461485a | 9524 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9525 | enum bptype type, int cnt, int ot) |
96baa820 | 9526 | { |
3c3bea1c GS |
9527 | if (type == bp_hardware_breakpoint) |
9528 | { | |
9529 | if (remote_hw_breakpoint_limit == 0) | |
9530 | return 0; | |
501eef12 AC |
9531 | else if (remote_hw_breakpoint_limit < 0) |
9532 | return 1; | |
3c3bea1c GS |
9533 | else if (cnt <= remote_hw_breakpoint_limit) |
9534 | return 1; | |
9535 | } | |
9536 | else | |
9537 | { | |
9538 | if (remote_hw_watchpoint_limit == 0) | |
9539 | return 0; | |
501eef12 AC |
9540 | else if (remote_hw_watchpoint_limit < 0) |
9541 | return 1; | |
3c3bea1c GS |
9542 | else if (ot) |
9543 | return -1; | |
9544 | else if (cnt <= remote_hw_watchpoint_limit) | |
9545 | return 1; | |
9546 | } | |
9547 | return -1; | |
9548 | } | |
9549 | ||
f7e6eed5 PA |
9550 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9551 | ||
9552 | static int | |
9553 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9554 | { | |
799a2abe | 9555 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9556 | |
799a2abe PA |
9557 | return (thread->priv != NULL |
9558 | && thread->priv->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT); | |
f7e6eed5 PA |
9559 | } |
9560 | ||
9561 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9562 | remote. */ | |
9563 | ||
9564 | static int | |
9565 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9566 | { | |
9567 | struct remote_state *rs = get_remote_state (); | |
9568 | ||
9569 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
9570 | } | |
9571 | ||
9572 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9573 | ||
9574 | static int | |
9575 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9576 | { | |
799a2abe | 9577 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 9578 | |
799a2abe PA |
9579 | return (thread->priv != NULL |
9580 | && thread->priv->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT); | |
f7e6eed5 PA |
9581 | } |
9582 | ||
9583 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9584 | remote. */ | |
9585 | ||
9586 | static int | |
9587 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9588 | { | |
9589 | struct remote_state *rs = get_remote_state (); | |
9590 | ||
9591 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
9592 | } | |
9593 | ||
b9362cc7 | 9594 | static int |
6a109b6b | 9595 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9596 | { |
799a2abe | 9597 | struct thread_info *thread = inferior_thread (); |
ee154bee | 9598 | |
799a2abe PA |
9599 | return (thread->priv != NULL |
9600 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT); | |
3c3bea1c GS |
9601 | } |
9602 | ||
4aa7a7f5 JJ |
9603 | static int |
9604 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9605 | { |
799a2abe | 9606 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 9607 | |
799a2abe PA |
9608 | if (thread->priv != NULL |
9609 | && thread->priv->stop_reason == TARGET_STOPPED_BY_WATCHPOINT) | |
4aa7a7f5 | 9610 | { |
799a2abe PA |
9611 | *addr_p = thread->priv->watch_data_address; |
9612 | return 1; | |
4aa7a7f5 JJ |
9613 | } |
9614 | ||
799a2abe | 9615 | return 0; |
3c3bea1c GS |
9616 | } |
9617 | ||
9618 | ||
9619 | static int | |
23a26771 | 9620 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9621 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9622 | { |
0d5ed153 | 9623 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9624 | struct remote_state *rs; |
bba74b36 | 9625 | char *p, *endbuf; |
dd61ec5c | 9626 | char *message; |
0d5ed153 | 9627 | int bpsize; |
802188a7 | 9628 | |
c8189ed1 | 9629 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9630 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9631 | |
0d5ed153 | 9632 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9633 | |
4082afcc | 9634 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9635 | return -1; |
2bc416ba | 9636 | |
28439a30 PA |
9637 | /* Make sure the remote is pointing at the right process, if |
9638 | necessary. */ | |
9639 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9640 | set_general_process (); | |
9641 | ||
4fff2411 JZ |
9642 | rs = get_remote_state (); |
9643 | p = rs->buf; | |
bba74b36 | 9644 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9645 | |
96baa820 JM |
9646 | *(p++) = 'Z'; |
9647 | *(p++) = '1'; | |
9648 | *(p++) = ','; | |
802188a7 | 9649 | |
0d5ed153 | 9650 | addr = remote_address_masked (addr); |
96baa820 | 9651 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9652 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9653 | |
efcc2da7 | 9654 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9655 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9656 | |
78eff0ec | 9657 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9658 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9659 | ||
6d820c5c DJ |
9660 | putpkt (rs->buf); |
9661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9662 | |
6d820c5c | 9663 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9664 | { |
9665 | case PACKET_ERROR: | |
dd61ec5c MW |
9666 | if (rs->buf[1] == '.') |
9667 | { | |
9668 | message = strchr (rs->buf + 2, '.'); | |
9669 | if (message) | |
0316657e | 9670 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9671 | } |
9672 | return -1; | |
d471ea57 AC |
9673 | case PACKET_UNKNOWN: |
9674 | return -1; | |
9675 | case PACKET_OK: | |
0d5ed153 MR |
9676 | bp_tgt->placed_address = addr; |
9677 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9678 | return 0; |
9679 | } | |
8e65ff28 | 9680 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9681 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9682 | } |
9683 | ||
d471ea57 | 9684 | |
802188a7 | 9685 | static int |
a64dc96c | 9686 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9687 | struct bp_target_info *bp_tgt) |
96baa820 | 9688 | { |
8181d85f | 9689 | CORE_ADDR addr; |
d01949b6 | 9690 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9691 | char *p = rs->buf; |
bba74b36 | 9692 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9693 | |
4082afcc | 9694 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9695 | return -1; |
802188a7 | 9696 | |
28439a30 PA |
9697 | /* Make sure the remote is pointing at the right process, if |
9698 | necessary. */ | |
9699 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9700 | set_general_process (); | |
9701 | ||
96baa820 JM |
9702 | *(p++) = 'z'; |
9703 | *(p++) = '1'; | |
9704 | *(p++) = ','; | |
802188a7 | 9705 | |
8181d85f | 9706 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9707 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9708 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9709 | |
6d820c5c DJ |
9710 | putpkt (rs->buf); |
9711 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9712 | |
6d820c5c | 9713 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9714 | { |
9715 | case PACKET_ERROR: | |
9716 | case PACKET_UNKNOWN: | |
9717 | return -1; | |
9718 | case PACKET_OK: | |
9719 | return 0; | |
9720 | } | |
8e65ff28 | 9721 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9722 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9723 | } |
96baa820 | 9724 | |
4a5e7a5b PA |
9725 | /* Verify memory using the "qCRC:" request. */ |
9726 | ||
9727 | static int | |
9728 | remote_verify_memory (struct target_ops *ops, | |
9729 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9730 | { | |
9731 | struct remote_state *rs = get_remote_state (); | |
9732 | unsigned long host_crc, target_crc; | |
9733 | char *tmp; | |
9734 | ||
936d2992 PA |
9735 | /* It doesn't make sense to use qCRC if the remote target is |
9736 | connected but not running. */ | |
9737 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9738 | { | |
9739 | enum packet_result result; | |
28439a30 | 9740 | |
936d2992 PA |
9741 | /* Make sure the remote is pointing at the right process. */ |
9742 | set_general_process (); | |
4a5e7a5b | 9743 | |
936d2992 PA |
9744 | /* FIXME: assumes lma can fit into long. */ |
9745 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9746 | (long) lma, (long) size); | |
9747 | putpkt (rs->buf); | |
4a5e7a5b | 9748 | |
936d2992 PA |
9749 | /* Be clever; compute the host_crc before waiting for target |
9750 | reply. */ | |
9751 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9752 | ||
9753 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9754 | |
936d2992 PA |
9755 | result = packet_ok (rs->buf, |
9756 | &remote_protocol_packets[PACKET_qCRC]); | |
9757 | if (result == PACKET_ERROR) | |
9758 | return -1; | |
9759 | else if (result == PACKET_OK) | |
9760 | { | |
9761 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9762 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9763 | |
936d2992 PA |
9764 | return (host_crc == target_crc); |
9765 | } | |
9766 | } | |
4a5e7a5b | 9767 | |
936d2992 | 9768 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9769 | } |
9770 | ||
c906108c SS |
9771 | /* compare-sections command |
9772 | ||
9773 | With no arguments, compares each loadable section in the exec bfd | |
9774 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9775 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9776 | |
c906108c | 9777 | static void |
fba45db2 | 9778 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9779 | { |
9780 | asection *s; | |
c906108c | 9781 | struct cleanup *old_chain; |
948f8e3d | 9782 | gdb_byte *sectdata; |
ce359b09 | 9783 | const char *sectname; |
c906108c SS |
9784 | bfd_size_type size; |
9785 | bfd_vma lma; | |
9786 | int matched = 0; | |
9787 | int mismatched = 0; | |
4a5e7a5b | 9788 | int res; |
95cf3b38 | 9789 | int read_only = 0; |
c906108c SS |
9790 | |
9791 | if (!exec_bfd) | |
8a3fe4f8 | 9792 | error (_("command cannot be used without an exec file")); |
c906108c | 9793 | |
28439a30 PA |
9794 | /* Make sure the remote is pointing at the right process. */ |
9795 | set_general_process (); | |
9796 | ||
95cf3b38 DT |
9797 | if (args != NULL && strcmp (args, "-r") == 0) |
9798 | { | |
9799 | read_only = 1; | |
9800 | args = NULL; | |
9801 | } | |
9802 | ||
c5aa993b | 9803 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9804 | { |
9805 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9806 | continue; /* Skip non-loadable section. */ |
c906108c | 9807 | |
95cf3b38 DT |
9808 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9809 | continue; /* Skip writeable sections */ | |
9810 | ||
2c500098 | 9811 | size = bfd_get_section_size (s); |
c906108c | 9812 | if (size == 0) |
0df8b418 | 9813 | continue; /* Skip zero-length section. */ |
c906108c | 9814 | |
ce359b09 | 9815 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9816 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9817 | continue; /* Not the section selected by user. */ |
c906108c | 9818 | |
0df8b418 | 9819 | matched = 1; /* Do this section. */ |
c906108c | 9820 | lma = s->lma; |
c906108c | 9821 | |
224c3ddb | 9822 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 9823 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9824 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9825 | |
4a5e7a5b PA |
9826 | res = target_verify_memory (sectdata, lma, size); |
9827 | ||
9828 | if (res == -1) | |
5af949e3 | 9829 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9830 | paddress (target_gdbarch (), lma), |
9831 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9832 | |
5af949e3 | 9833 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9834 | paddress (target_gdbarch (), lma), |
9835 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9836 | if (res) |
c906108c SS |
9837 | printf_filtered ("matched.\n"); |
9838 | else | |
c5aa993b JM |
9839 | { |
9840 | printf_filtered ("MIS-MATCHED!\n"); | |
9841 | mismatched++; | |
9842 | } | |
c906108c SS |
9843 | |
9844 | do_cleanups (old_chain); | |
9845 | } | |
9846 | if (mismatched > 0) | |
936d2992 | 9847 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9848 | the loaded file\n")); |
c906108c | 9849 | if (args && !matched) |
a3f17187 | 9850 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9851 | } |
9852 | ||
0e7f50da UW |
9853 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9854 | into remote target. The number of bytes written to the remote | |
9855 | target is returned, or -1 for error. */ | |
9856 | ||
9b409511 | 9857 | static enum target_xfer_status |
0e7f50da UW |
9858 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9859 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9860 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9861 | struct packet_config *packet) |
9862 | { | |
9863 | int i, buf_len; | |
9864 | ULONGEST n; | |
0e7f50da UW |
9865 | struct remote_state *rs = get_remote_state (); |
9866 | int max_size = get_memory_write_packet_size (); | |
9867 | ||
9868 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9869 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9870 | |
9871 | /* Insert header. */ | |
9872 | i = snprintf (rs->buf, max_size, | |
9873 | "qXfer:%s:write:%s:%s:", | |
9874 | object_name, annex ? annex : "", | |
9875 | phex_nz (offset, sizeof offset)); | |
9876 | max_size -= (i + 1); | |
9877 | ||
9878 | /* Escape as much data as fits into rs->buf. */ | |
9879 | buf_len = remote_escape_output | |
124e13d9 | 9880 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9881 | |
9882 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9883 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9884 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9885 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9886 | |
9887 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9888 | |
9889 | *xfered_len = n; | |
9890 | return TARGET_XFER_OK; | |
0e7f50da UW |
9891 | } |
9892 | ||
0876f84a DJ |
9893 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9894 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9895 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9896 | The number of bytes read may be less than LEN without indicating an | |
9897 | EOF. PACKET is checked and updated to indicate whether the remote | |
9898 | target supports this object. */ | |
9899 | ||
9b409511 | 9900 | static enum target_xfer_status |
0876f84a DJ |
9901 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9902 | const char *annex, | |
9903 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9904 | ULONGEST *xfered_len, |
0876f84a DJ |
9905 | struct packet_config *packet) |
9906 | { | |
0876f84a | 9907 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9908 | LONGEST i, n, packet_len; |
9909 | ||
9910 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9911 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9912 | |
9913 | /* Check whether we've cached an end-of-object packet that matches | |
9914 | this request. */ | |
8e88304f | 9915 | if (rs->finished_object) |
0876f84a | 9916 | { |
8e88304f TT |
9917 | if (strcmp (object_name, rs->finished_object) == 0 |
9918 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9919 | && offset == rs->finished_offset) | |
9b409511 YQ |
9920 | return TARGET_XFER_EOF; |
9921 | ||
0876f84a DJ |
9922 | |
9923 | /* Otherwise, we're now reading something different. Discard | |
9924 | the cache. */ | |
8e88304f TT |
9925 | xfree (rs->finished_object); |
9926 | xfree (rs->finished_annex); | |
9927 | rs->finished_object = NULL; | |
9928 | rs->finished_annex = NULL; | |
0876f84a DJ |
9929 | } |
9930 | ||
9931 | /* Request only enough to fit in a single packet. The actual data | |
9932 | may not, since we don't know how much of it will need to be escaped; | |
9933 | the target is free to respond with slightly less data. We subtract | |
9934 | five to account for the response type and the protocol frame. */ | |
9935 | n = min (get_remote_packet_size () - 5, len); | |
9936 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9937 | object_name, annex ? annex : "", | |
9938 | phex_nz (offset, sizeof offset), | |
9939 | phex_nz (n, sizeof n)); | |
9940 | i = putpkt (rs->buf); | |
9941 | if (i < 0) | |
2ed4b548 | 9942 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9943 | |
9944 | rs->buf[0] = '\0'; | |
9945 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9946 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9947 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9948 | |
9949 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9950 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9951 | ||
9952 | /* 'm' means there is (or at least might be) more data after this | |
9953 | batch. That does not make sense unless there's at least one byte | |
9954 | of data in this reply. */ | |
9955 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9956 | error (_("Remote qXfer reply contained no data.")); | |
9957 | ||
9958 | /* Got some data. */ | |
bc20a4af PA |
9959 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9960 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9961 | |
9962 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9963 | or possibly empty. If we have the final block of a non-empty |
9964 | object, record this fact to bypass a subsequent partial read. */ | |
9965 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9966 | { |
8e88304f TT |
9967 | rs->finished_object = xstrdup (object_name); |
9968 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9969 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9970 | } |
9971 | ||
9b409511 YQ |
9972 | if (i == 0) |
9973 | return TARGET_XFER_EOF; | |
9974 | else | |
9975 | { | |
9976 | *xfered_len = i; | |
9977 | return TARGET_XFER_OK; | |
9978 | } | |
0876f84a DJ |
9979 | } |
9980 | ||
9b409511 | 9981 | static enum target_xfer_status |
4b8a223f | 9982 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9983 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9984 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9985 | ULONGEST *xfered_len) | |
c906108c | 9986 | { |
82f73884 | 9987 | struct remote_state *rs; |
c906108c | 9988 | int i; |
6d820c5c | 9989 | char *p2; |
1e3ff5ad | 9990 | char query_type; |
124e13d9 | 9991 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9992 | |
e6e4e701 | 9993 | set_remote_traceframe (); |
82f73884 PA |
9994 | set_general_thread (inferior_ptid); |
9995 | ||
9996 | rs = get_remote_state (); | |
9997 | ||
b2182ed2 | 9998 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9999 | if (object == TARGET_OBJECT_MEMORY) |
10000 | { | |
2d717e4f DJ |
10001 | /* If the remote target is connected but not running, we should |
10002 | pass this request down to a lower stratum (e.g. the executable | |
10003 | file). */ | |
10004 | if (!target_has_execution) | |
9b409511 | 10005 | return TARGET_XFER_EOF; |
2d717e4f | 10006 | |
21e3b9b9 | 10007 | if (writebuf != NULL) |
124e13d9 SM |
10008 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10009 | xfered_len); | |
21e3b9b9 | 10010 | else |
124e13d9 SM |
10011 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
10012 | xfered_len); | |
21e3b9b9 DJ |
10013 | } |
10014 | ||
0df8b418 | 10015 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
10016 | if (object == TARGET_OBJECT_SPU) |
10017 | { | |
10018 | if (readbuf) | |
10019 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
10020 | xfered_len, &remote_protocol_packets |
10021 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
10022 | else |
10023 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
10024 | xfered_len, &remote_protocol_packets |
10025 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
10026 | } |
10027 | ||
4aa995e1 PA |
10028 | /* Handle extra signal info using qxfer packets. */ |
10029 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10030 | { | |
10031 | if (readbuf) | |
10032 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 10033 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10034 | [PACKET_qXfer_siginfo_read]); |
10035 | else | |
3e43a32a | 10036 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 10037 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10038 | &remote_protocol_packets |
10039 | [PACKET_qXfer_siginfo_write]); | |
10040 | } | |
10041 | ||
0fb4aa4b PA |
10042 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10043 | { | |
10044 | if (readbuf) | |
3e43a32a | 10045 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 10046 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10047 | &remote_protocol_packets |
10048 | [PACKET_qXfer_statictrace_read]); | |
10049 | else | |
2ed4b548 | 10050 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10051 | } |
10052 | ||
a76d924d DJ |
10053 | /* Only handle flash writes. */ |
10054 | if (writebuf != NULL) | |
10055 | { | |
10056 | LONGEST xfered; | |
10057 | ||
10058 | switch (object) | |
10059 | { | |
10060 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
10061 | return remote_flash_write (ops, offset, len, xfered_len, |
10062 | writebuf); | |
a76d924d DJ |
10063 | |
10064 | default: | |
2ed4b548 | 10065 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10066 | } |
10067 | } | |
4b8a223f | 10068 | |
1e3ff5ad AC |
10069 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10070 | objects!!! Instead specify new query packets. */ | |
10071 | switch (object) | |
c906108c | 10072 | { |
1e3ff5ad AC |
10073 | case TARGET_OBJECT_AVR: |
10074 | query_type = 'R'; | |
10075 | break; | |
802188a7 RM |
10076 | |
10077 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
10078 | gdb_assert (annex == NULL); |
10079 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 10080 | xfered_len, |
0876f84a | 10081 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10082 | |
23181151 DJ |
10083 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10084 | return remote_read_qxfer | |
9b409511 | 10085 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10086 | &remote_protocol_packets[PACKET_qXfer_features]); |
10087 | ||
cfa9d6d9 DJ |
10088 | case TARGET_OBJECT_LIBRARIES: |
10089 | return remote_read_qxfer | |
9b409511 | 10090 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10091 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10092 | ||
2268b414 JK |
10093 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10094 | return remote_read_qxfer | |
9b409511 | 10095 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10096 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10097 | ||
fd79ecee DJ |
10098 | case TARGET_OBJECT_MEMORY_MAP: |
10099 | gdb_assert (annex == NULL); | |
10100 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 10101 | xfered_len, |
fd79ecee DJ |
10102 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10103 | ||
07e059b5 VP |
10104 | case TARGET_OBJECT_OSDATA: |
10105 | /* Should only get here if we're connected. */ | |
5d93a237 | 10106 | gdb_assert (rs->remote_desc); |
07e059b5 | 10107 | return remote_read_qxfer |
9b409511 | 10108 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10109 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10110 | ||
dc146f7c VP |
10111 | case TARGET_OBJECT_THREADS: |
10112 | gdb_assert (annex == NULL); | |
10113 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 10114 | xfered_len, |
dc146f7c VP |
10115 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10116 | ||
b3b9301e PA |
10117 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10118 | gdb_assert (annex == NULL); | |
10119 | return remote_read_qxfer | |
9b409511 | 10120 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10121 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10122 | |
10123 | case TARGET_OBJECT_FDPIC: | |
10124 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 10125 | xfered_len, |
78d85199 | 10126 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10127 | |
10128 | case TARGET_OBJECT_OPENVMS_UIB: | |
10129 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 10130 | xfered_len, |
169081d0 TG |
10131 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10132 | ||
9accd112 MM |
10133 | case TARGET_OBJECT_BTRACE: |
10134 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 10135 | xfered_len, |
9accd112 MM |
10136 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10137 | ||
f4abbc16 MM |
10138 | case TARGET_OBJECT_BTRACE_CONF: |
10139 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
10140 | len, xfered_len, | |
10141 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10142 | ||
c78fa86a GB |
10143 | case TARGET_OBJECT_EXEC_FILE: |
10144 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
10145 | len, xfered_len, | |
10146 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10147 | ||
1e3ff5ad | 10148 | default: |
2ed4b548 | 10149 | return TARGET_XFER_E_IO; |
c906108c SS |
10150 | } |
10151 | ||
0df8b418 | 10152 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10153 | large enough let the caller deal with it. */ |
ea9c271d | 10154 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10155 | return TARGET_XFER_E_IO; |
ea9c271d | 10156 | len = get_remote_packet_size (); |
1e3ff5ad | 10157 | |
23860348 | 10158 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10159 | if (!rs->remote_desc) |
8a3fe4f8 | 10160 | error (_("remote query is only available after target open")); |
c906108c | 10161 | |
1e3ff5ad | 10162 | gdb_assert (annex != NULL); |
4b8a223f | 10163 | gdb_assert (readbuf != NULL); |
c906108c | 10164 | |
6d820c5c | 10165 | p2 = rs->buf; |
c906108c SS |
10166 | *p2++ = 'q'; |
10167 | *p2++ = query_type; | |
10168 | ||
23860348 MS |
10169 | /* We used one buffer char for the remote protocol q command and |
10170 | another for the query type. As the remote protocol encapsulation | |
10171 | uses 4 chars plus one extra in case we are debugging | |
10172 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10173 | string. */ | |
c906108c | 10174 | i = 0; |
ea9c271d | 10175 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 10176 | { |
1e3ff5ad AC |
10177 | /* Bad caller may have sent forbidden characters. */ |
10178 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
10179 | *p2++ = annex[i]; | |
c906108c SS |
10180 | i++; |
10181 | } | |
1e3ff5ad AC |
10182 | *p2 = '\0'; |
10183 | gdb_assert (annex[i] == '\0'); | |
c906108c | 10184 | |
6d820c5c | 10185 | i = putpkt (rs->buf); |
c5aa993b | 10186 | if (i < 0) |
2ed4b548 | 10187 | return TARGET_XFER_E_IO; |
c906108c | 10188 | |
6d820c5c DJ |
10189 | getpkt (&rs->buf, &rs->buf_size, 0); |
10190 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 10191 | |
9b409511 YQ |
10192 | *xfered_len = strlen ((char *) readbuf); |
10193 | return TARGET_XFER_OK; | |
c906108c SS |
10194 | } |
10195 | ||
08388c79 DE |
10196 | static int |
10197 | remote_search_memory (struct target_ops* ops, | |
10198 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
10199 | const gdb_byte *pattern, ULONGEST pattern_len, | |
10200 | CORE_ADDR *found_addrp) | |
10201 | { | |
f5656ead | 10202 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
10203 | struct remote_state *rs = get_remote_state (); |
10204 | int max_size = get_memory_write_packet_size (); | |
10205 | struct packet_config *packet = | |
10206 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
10207 | /* Number of packet bytes used to encode the pattern; |
10208 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 10209 | int escaped_pattern_len; |
0df8b418 | 10210 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
10211 | int used_pattern_len; |
10212 | int i; | |
10213 | int found; | |
10214 | ULONGEST found_addr; | |
10215 | ||
10216 | /* Don't go to the target if we don't have to. | |
10217 | This is done before checking packet->support to avoid the possibility that | |
10218 | a success for this edge case means the facility works in general. */ | |
10219 | if (pattern_len > search_space_len) | |
10220 | return 0; | |
10221 | if (pattern_len == 0) | |
10222 | { | |
10223 | *found_addrp = start_addr; | |
10224 | return 1; | |
10225 | } | |
10226 | ||
10227 | /* If we already know the packet isn't supported, fall back to the simple | |
10228 | way of searching memory. */ | |
10229 | ||
4082afcc | 10230 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
10231 | { |
10232 | /* Target doesn't provided special support, fall back and use the | |
10233 | standard support (copy memory and do the search here). */ | |
10234 | return simple_search_memory (ops, start_addr, search_space_len, | |
10235 | pattern, pattern_len, found_addrp); | |
10236 | } | |
10237 | ||
28439a30 PA |
10238 | /* Make sure the remote is pointing at the right process. */ |
10239 | set_general_process (); | |
10240 | ||
08388c79 DE |
10241 | /* Insert header. */ |
10242 | i = snprintf (rs->buf, max_size, | |
10243 | "qSearch:memory:%s;%s;", | |
5af949e3 | 10244 | phex_nz (start_addr, addr_size), |
08388c79 DE |
10245 | phex_nz (search_space_len, sizeof (search_space_len))); |
10246 | max_size -= (i + 1); | |
10247 | ||
10248 | /* Escape as much data as fits into rs->buf. */ | |
10249 | escaped_pattern_len = | |
124e13d9 | 10250 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
10251 | &used_pattern_len, max_size); |
10252 | ||
10253 | /* Bail if the pattern is too large. */ | |
10254 | if (used_pattern_len != pattern_len) | |
9b20d036 | 10255 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
10256 | |
10257 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
10258 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
10259 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
10260 | { | |
10261 | /* The request may not have worked because the command is not | |
10262 | supported. If so, fall back to the simple way. */ | |
10263 | if (packet->support == PACKET_DISABLE) | |
10264 | { | |
10265 | return simple_search_memory (ops, start_addr, search_space_len, | |
10266 | pattern, pattern_len, found_addrp); | |
10267 | } | |
10268 | return -1; | |
10269 | } | |
10270 | ||
10271 | if (rs->buf[0] == '0') | |
10272 | found = 0; | |
10273 | else if (rs->buf[0] == '1') | |
10274 | { | |
10275 | found = 1; | |
10276 | if (rs->buf[1] != ',') | |
10e0fa18 | 10277 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10278 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
10279 | *found_addrp = found_addr; | |
10280 | } | |
10281 | else | |
10e0fa18 | 10282 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
10283 | |
10284 | return found; | |
10285 | } | |
10286 | ||
96baa820 | 10287 | static void |
a30bf1f1 | 10288 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 10289 | struct ui_file *outbuf) |
96baa820 | 10290 | { |
d01949b6 | 10291 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 10292 | char *p = rs->buf; |
96baa820 | 10293 | |
5d93a237 | 10294 | if (!rs->remote_desc) |
8a3fe4f8 | 10295 | error (_("remote rcmd is only available after target open")); |
96baa820 | 10296 | |
23860348 | 10297 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
10298 | if (command == NULL) |
10299 | command = ""; | |
10300 | ||
23860348 | 10301 | /* The query prefix. */ |
2e9f7625 DJ |
10302 | strcpy (rs->buf, "qRcmd,"); |
10303 | p = strchr (rs->buf, '\0'); | |
96baa820 | 10304 | |
3e43a32a MS |
10305 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
10306 | > get_remote_packet_size ()) | |
8a3fe4f8 | 10307 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 10308 | |
23860348 | 10309 | /* Encode the actual command. */ |
a30bf1f1 | 10310 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 10311 | |
6d820c5c | 10312 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 10313 | error (_("Communication problem with target.")); |
96baa820 JM |
10314 | |
10315 | /* get/display the response */ | |
10316 | while (1) | |
10317 | { | |
2e9f7625 DJ |
10318 | char *buf; |
10319 | ||
00bf0b85 | 10320 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 10321 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 10322 | rs->buf[0] = '\0'; |
5b37825d PW |
10323 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
10324 | { | |
10325 | /* Timeout. Continue to (try to) read responses. | |
10326 | This is better than stopping with an error, assuming the stub | |
10327 | is still executing the (long) monitor command. | |
10328 | If needed, the user can interrupt gdb using C-c, obtaining | |
10329 | an effect similar to stop on timeout. */ | |
10330 | continue; | |
10331 | } | |
2e9f7625 | 10332 | buf = rs->buf; |
96baa820 | 10333 | if (buf[0] == '\0') |
8a3fe4f8 | 10334 | error (_("Target does not support this command.")); |
96baa820 JM |
10335 | if (buf[0] == 'O' && buf[1] != 'K') |
10336 | { | |
23860348 | 10337 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
10338 | continue; |
10339 | } | |
10340 | if (strcmp (buf, "OK") == 0) | |
10341 | break; | |
7be570e7 JM |
10342 | if (strlen (buf) == 3 && buf[0] == 'E' |
10343 | && isdigit (buf[1]) && isdigit (buf[2])) | |
10344 | { | |
8a3fe4f8 | 10345 | error (_("Protocol error with Rcmd")); |
7be570e7 | 10346 | } |
96baa820 JM |
10347 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10348 | { | |
10349 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10350 | |
96baa820 JM |
10351 | fputc_unfiltered (c, outbuf); |
10352 | } | |
10353 | break; | |
10354 | } | |
10355 | } | |
10356 | ||
fd79ecee DJ |
10357 | static VEC(mem_region_s) * |
10358 | remote_memory_map (struct target_ops *ops) | |
10359 | { | |
10360 | VEC(mem_region_s) *result = NULL; | |
10361 | char *text = target_read_stralloc (¤t_target, | |
10362 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10363 | ||
10364 | if (text) | |
10365 | { | |
10366 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10367 | |
fd79ecee DJ |
10368 | result = parse_memory_map (text); |
10369 | do_cleanups (back_to); | |
10370 | } | |
10371 | ||
10372 | return result; | |
10373 | } | |
10374 | ||
c906108c | 10375 | static void |
fba45db2 | 10376 | packet_command (char *args, int from_tty) |
c906108c | 10377 | { |
d01949b6 | 10378 | struct remote_state *rs = get_remote_state (); |
c906108c | 10379 | |
5d93a237 | 10380 | if (!rs->remote_desc) |
8a3fe4f8 | 10381 | error (_("command can only be used with remote target")); |
c906108c | 10382 | |
c5aa993b | 10383 | if (!args) |
8a3fe4f8 | 10384 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10385 | |
10386 | puts_filtered ("sending: "); | |
10387 | print_packet (args); | |
10388 | puts_filtered ("\n"); | |
10389 | putpkt (args); | |
10390 | ||
6d820c5c | 10391 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10392 | puts_filtered ("received: "); |
6d820c5c | 10393 | print_packet (rs->buf); |
c906108c SS |
10394 | puts_filtered ("\n"); |
10395 | } | |
10396 | ||
10397 | #if 0 | |
23860348 | 10398 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10399 | |
a14ed312 | 10400 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10401 | |
a14ed312 | 10402 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10403 | |
a14ed312 | 10404 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10405 | |
a14ed312 | 10406 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10407 | |
23860348 | 10408 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10409 | |
a14ed312 | 10410 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10411 | |
23860348 | 10412 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10413 | |
a14ed312 | 10414 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10415 | |
a14ed312 | 10416 | static void init_remote_threadtests (void); |
c906108c | 10417 | |
23860348 | 10418 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10419 | |
10420 | static void | |
fba45db2 | 10421 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10422 | { |
10423 | int sample_thread = SAMPLE_THREAD; | |
10424 | ||
a3f17187 | 10425 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10426 | set_general_thread (sample_thread); |
c906108c SS |
10427 | } |
10428 | ||
10429 | ||
10430 | static void | |
fba45db2 | 10431 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10432 | { |
10433 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10434 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10435 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10436 | |
79d7f229 | 10437 | if (remote_thread_alive (ptid)) |
c906108c SS |
10438 | printf_filtered ("PASS: Thread alive test\n"); |
10439 | else | |
10440 | printf_filtered ("FAIL: Thread alive test\n"); | |
10441 | } | |
10442 | ||
23860348 | 10443 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10444 | |
10445 | void | |
fba45db2 | 10446 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10447 | { |
10448 | char hexid[20]; | |
10449 | ||
23860348 | 10450 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10451 | hexid[16] = 0; |
10452 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10453 | } | |
10454 | ||
10455 | static void | |
fba45db2 | 10456 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10457 | { |
10458 | int startflag = 1; | |
10459 | threadref nextthread; | |
10460 | int done, result_count; | |
10461 | threadref threadlist[3]; | |
10462 | ||
10463 | printf_filtered ("Remote Threadlist test\n"); | |
10464 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10465 | &result_count, &threadlist[0])) | |
10466 | printf_filtered ("FAIL: threadlist test\n"); | |
10467 | else | |
10468 | { | |
10469 | threadref *scan = threadlist; | |
10470 | threadref *limit = scan + result_count; | |
10471 | ||
10472 | while (scan < limit) | |
10473 | output_threadid (" thread ", scan++); | |
10474 | } | |
10475 | } | |
10476 | ||
10477 | void | |
fba45db2 | 10478 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10479 | { |
10480 | output_threadid ("Threadid: ", &info->threadid); | |
10481 | printf_filtered ("Name: %s\n ", info->shortname); | |
10482 | printf_filtered ("State: %s\n", info->display); | |
10483 | printf_filtered ("other: %s\n\n", info->more_display); | |
10484 | } | |
10485 | ||
10486 | int | |
fba45db2 | 10487 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10488 | { |
10489 | int result; | |
10490 | int set; | |
10491 | struct gdb_ext_thread_info threadinfo; | |
10492 | ||
10493 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10494 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10495 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10496 | display_thread_info (&threadinfo); | |
10497 | return result; | |
10498 | } | |
10499 | ||
10500 | static void | |
fba45db2 | 10501 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10502 | { |
10503 | int athread = SAMPLE_THREAD; | |
10504 | threadref thread; | |
10505 | int set; | |
10506 | ||
10507 | int_to_threadref (&thread, athread); | |
10508 | printf_filtered ("Remote Threadinfo test\n"); | |
10509 | if (!get_and_display_threadinfo (&thread)) | |
10510 | printf_filtered ("FAIL cannot get thread info\n"); | |
10511 | } | |
10512 | ||
10513 | static int | |
fba45db2 | 10514 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10515 | { |
10516 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10517 | return get_and_display_threadinfo (ref); | |
10518 | } | |
10519 | ||
10520 | static void | |
fba45db2 | 10521 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10522 | { |
10523 | printf_filtered ("Remote Threadlist update test\n"); | |
10524 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10525 | } | |
10526 | ||
10527 | static void | |
10528 | init_remote_threadtests (void) | |
10529 | { | |
3e43a32a MS |
10530 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10531 | _("Fetch and print the remote list of " | |
10532 | "thread identifiers, one pkt only")); | |
c906108c | 10533 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10534 | _("Fetch and display info about one thread")); |
c906108c | 10535 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10536 | _("Test setting to a different thread")); |
c906108c | 10537 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10538 | _("Iterate through updating all remote thread info")); |
c906108c | 10539 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10540 | _(" Remote thread alive test ")); |
c906108c SS |
10541 | } |
10542 | ||
10543 | #endif /* 0 */ | |
10544 | ||
f3fb8c85 MS |
10545 | /* Convert a thread ID to a string. Returns the string in a static |
10546 | buffer. */ | |
10547 | ||
10548 | static char * | |
117de6a9 | 10549 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10550 | { |
79d7f229 | 10551 | static char buf[64]; |
82f73884 | 10552 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10553 | |
7cee1e54 PA |
10554 | if (ptid_equal (ptid, null_ptid)) |
10555 | return normal_pid_to_str (ptid); | |
10556 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10557 | { |
10558 | /* Printing an inferior target id. */ | |
10559 | ||
10560 | /* When multi-process extensions are off, there's no way in the | |
10561 | remote protocol to know the remote process id, if there's any | |
10562 | at all. There's one exception --- when we're connected with | |
10563 | target extended-remote, and we manually attached to a process | |
10564 | with "attach PID". We don't record anywhere a flag that | |
10565 | allows us to distinguish that case from the case of | |
10566 | connecting with extended-remote and the stub already being | |
10567 | attached to a process, and reporting yes to qAttached, hence | |
10568 | no smart special casing here. */ | |
10569 | if (!remote_multi_process_p (rs)) | |
10570 | { | |
10571 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10572 | return buf; | |
10573 | } | |
10574 | ||
10575 | return normal_pid_to_str (ptid); | |
82f73884 | 10576 | } |
ecd0ada5 | 10577 | else |
79d7f229 | 10578 | { |
ecd0ada5 PA |
10579 | if (ptid_equal (magic_null_ptid, ptid)) |
10580 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8020350c | 10581 | else if (remote_multi_process_p (rs)) |
de0d863e DB |
10582 | if (ptid_get_lwp (ptid) == 0) |
10583 | return normal_pid_to_str (ptid); | |
10584 | else | |
10585 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10586 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10587 | else |
10588 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10589 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10590 | return buf; |
10591 | } | |
f3fb8c85 MS |
10592 | } |
10593 | ||
38691318 KB |
10594 | /* Get the address of the thread local variable in OBJFILE which is |
10595 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10596 | ||
10597 | static CORE_ADDR | |
117de6a9 PA |
10598 | remote_get_thread_local_address (struct target_ops *ops, |
10599 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10600 | { |
4082afcc | 10601 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10602 | { |
10603 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10604 | char *p = rs->buf; |
82f73884 | 10605 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10606 | enum packet_result result; |
38691318 KB |
10607 | |
10608 | strcpy (p, "qGetTLSAddr:"); | |
10609 | p += strlen (p); | |
82f73884 | 10610 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10611 | *p++ = ','; |
10612 | p += hexnumstr (p, offset); | |
10613 | *p++ = ','; | |
10614 | p += hexnumstr (p, lm); | |
10615 | *p++ = '\0'; | |
10616 | ||
6d820c5c DJ |
10617 | putpkt (rs->buf); |
10618 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10619 | result = packet_ok (rs->buf, |
10620 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10621 | if (result == PACKET_OK) |
38691318 KB |
10622 | { |
10623 | ULONGEST result; | |
10624 | ||
6d820c5c | 10625 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10626 | return result; |
10627 | } | |
571dd617 | 10628 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10629 | throw_error (TLS_GENERIC_ERROR, |
10630 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10631 | else |
109c3e39 AC |
10632 | throw_error (TLS_GENERIC_ERROR, |
10633 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10634 | } |
10635 | else | |
109c3e39 AC |
10636 | throw_error (TLS_GENERIC_ERROR, |
10637 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10638 | /* Not reached. */ |
10639 | return 0; | |
10640 | } | |
10641 | ||
711e434b PM |
10642 | /* Provide thread local base, i.e. Thread Information Block address. |
10643 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10644 | ||
70221824 | 10645 | static int |
bd7ae0f5 | 10646 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10647 | { |
4082afcc | 10648 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10649 | { |
10650 | struct remote_state *rs = get_remote_state (); | |
10651 | char *p = rs->buf; | |
10652 | char *endp = rs->buf + get_remote_packet_size (); | |
10653 | enum packet_result result; | |
10654 | ||
10655 | strcpy (p, "qGetTIBAddr:"); | |
10656 | p += strlen (p); | |
10657 | p = write_ptid (p, endp, ptid); | |
10658 | *p++ = '\0'; | |
10659 | ||
10660 | putpkt (rs->buf); | |
10661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10662 | result = packet_ok (rs->buf, | |
10663 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10664 | if (result == PACKET_OK) | |
10665 | { | |
10666 | ULONGEST result; | |
10667 | ||
10668 | unpack_varlen_hex (rs->buf, &result); | |
10669 | if (addr) | |
10670 | *addr = (CORE_ADDR) result; | |
10671 | return 1; | |
10672 | } | |
10673 | else if (result == PACKET_UNKNOWN) | |
10674 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10675 | else | |
10676 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10677 | } | |
10678 | else | |
10679 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10680 | /* Not reached. */ | |
10681 | return 0; | |
10682 | } | |
10683 | ||
29709017 DJ |
10684 | /* Support for inferring a target description based on the current |
10685 | architecture and the size of a 'g' packet. While the 'g' packet | |
10686 | can have any size (since optional registers can be left off the | |
10687 | end), some sizes are easily recognizable given knowledge of the | |
10688 | approximate architecture. */ | |
10689 | ||
10690 | struct remote_g_packet_guess | |
10691 | { | |
10692 | int bytes; | |
10693 | const struct target_desc *tdesc; | |
10694 | }; | |
10695 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10696 | DEF_VEC_O(remote_g_packet_guess_s); | |
10697 | ||
10698 | struct remote_g_packet_data | |
10699 | { | |
10700 | VEC(remote_g_packet_guess_s) *guesses; | |
10701 | }; | |
10702 | ||
10703 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10704 | ||
10705 | static void * | |
10706 | remote_g_packet_data_init (struct obstack *obstack) | |
10707 | { | |
10708 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10709 | } | |
10710 | ||
10711 | void | |
10712 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10713 | const struct target_desc *tdesc) | |
10714 | { | |
10715 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10716 | = ((struct remote_g_packet_data *) |
10717 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
10718 | struct remote_g_packet_guess new_guess, *guess; |
10719 | int ix; | |
10720 | ||
10721 | gdb_assert (tdesc != NULL); | |
10722 | ||
10723 | for (ix = 0; | |
10724 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10725 | ix++) | |
10726 | if (guess->bytes == bytes) | |
10727 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10728 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10729 | bytes); |
10730 | ||
10731 | new_guess.bytes = bytes; | |
10732 | new_guess.tdesc = tdesc; | |
10733 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10734 | } | |
10735 | ||
d962ef82 DJ |
10736 | /* Return 1 if remote_read_description would do anything on this target |
10737 | and architecture, 0 otherwise. */ | |
10738 | ||
10739 | static int | |
10740 | remote_read_description_p (struct target_ops *target) | |
10741 | { | |
10742 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10743 | = ((struct remote_g_packet_data *) |
10744 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
10745 | |
10746 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10747 | return 1; | |
10748 | ||
10749 | return 0; | |
10750 | } | |
10751 | ||
29709017 DJ |
10752 | static const struct target_desc * |
10753 | remote_read_description (struct target_ops *target) | |
10754 | { | |
10755 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10756 | = ((struct remote_g_packet_data *) |
10757 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 10758 | |
d962ef82 DJ |
10759 | /* Do not try this during initial connection, when we do not know |
10760 | whether there is a running but stopped thread. */ | |
10761 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10762 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10763 | |
29709017 DJ |
10764 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10765 | { | |
10766 | struct remote_g_packet_guess *guess; | |
10767 | int ix; | |
10768 | int bytes = send_g_packet (); | |
10769 | ||
10770 | for (ix = 0; | |
10771 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10772 | ix++) | |
10773 | if (guess->bytes == bytes) | |
10774 | return guess->tdesc; | |
10775 | ||
10776 | /* We discard the g packet. A minor optimization would be to | |
10777 | hold on to it, and fill the register cache once we have selected | |
10778 | an architecture, but it's too tricky to do safely. */ | |
10779 | } | |
10780 | ||
2117c711 | 10781 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10782 | } |
10783 | ||
a6b151f1 DJ |
10784 | /* Remote file transfer support. This is host-initiated I/O, not |
10785 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10786 | ||
10787 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10788 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10789 | decrease *LEFT. Otherwise raise an error. */ | |
10790 | ||
10791 | static void | |
10792 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10793 | { | |
10794 | int len = strlen (string); | |
10795 | ||
10796 | if (len > *left) | |
10797 | error (_("Packet too long for target.")); | |
10798 | ||
10799 | memcpy (*buffer, string, len); | |
10800 | *buffer += len; | |
10801 | *left -= len; | |
10802 | ||
10803 | /* NUL-terminate the buffer as a convenience, if there is | |
10804 | room. */ | |
10805 | if (*left) | |
10806 | **buffer = '\0'; | |
10807 | } | |
10808 | ||
10809 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10810 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10811 | decrease *LEFT. Otherwise raise an error. */ | |
10812 | ||
10813 | static void | |
10814 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10815 | int len) | |
10816 | { | |
10817 | if (2 * len > *left) | |
10818 | error (_("Packet too long for target.")); | |
10819 | ||
10820 | bin2hex (bytes, *buffer, len); | |
10821 | *buffer += 2 * len; | |
10822 | *left -= 2 * len; | |
10823 | ||
10824 | /* NUL-terminate the buffer as a convenience, if there is | |
10825 | room. */ | |
10826 | if (*left) | |
10827 | **buffer = '\0'; | |
10828 | } | |
10829 | ||
10830 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10831 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10832 | decrease *LEFT. Otherwise raise an error. */ | |
10833 | ||
10834 | static void | |
10835 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10836 | { | |
10837 | int len = hexnumlen (value); | |
10838 | ||
10839 | if (len > *left) | |
10840 | error (_("Packet too long for target.")); | |
10841 | ||
10842 | hexnumstr (*buffer, value); | |
10843 | *buffer += len; | |
10844 | *left -= len; | |
10845 | ||
10846 | /* NUL-terminate the buffer as a convenience, if there is | |
10847 | room. */ | |
10848 | if (*left) | |
10849 | **buffer = '\0'; | |
10850 | } | |
10851 | ||
10852 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10853 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10854 | was included, and *ATTACHMENT to point to the start of the annex | |
10855 | if any. The length of the packet isn't needed here; there may | |
10856 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10857 | ||
10858 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10859 | -1 is returned, the other variables may not be initialized. */ | |
10860 | ||
10861 | static int | |
10862 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10863 | int *remote_errno, char **attachment) | |
10864 | { | |
10865 | char *p, *p2; | |
10866 | ||
10867 | *remote_errno = 0; | |
10868 | *attachment = NULL; | |
10869 | ||
10870 | if (buffer[0] != 'F') | |
10871 | return -1; | |
10872 | ||
10873 | errno = 0; | |
10874 | *retcode = strtol (&buffer[1], &p, 16); | |
10875 | if (errno != 0 || p == &buffer[1]) | |
10876 | return -1; | |
10877 | ||
10878 | /* Check for ",errno". */ | |
10879 | if (*p == ',') | |
10880 | { | |
10881 | errno = 0; | |
10882 | *remote_errno = strtol (p + 1, &p2, 16); | |
10883 | if (errno != 0 || p + 1 == p2) | |
10884 | return -1; | |
10885 | p = p2; | |
10886 | } | |
10887 | ||
10888 | /* Check for ";attachment". If there is no attachment, the | |
10889 | packet should end here. */ | |
10890 | if (*p == ';') | |
10891 | { | |
10892 | *attachment = p + 1; | |
10893 | return 0; | |
10894 | } | |
10895 | else if (*p == '\0') | |
10896 | return 0; | |
10897 | else | |
10898 | return -1; | |
10899 | } | |
10900 | ||
10901 | /* Send a prepared I/O packet to the target and read its response. | |
10902 | The prepared packet is in the global RS->BUF before this function | |
10903 | is called, and the answer is there when we return. | |
10904 | ||
10905 | COMMAND_BYTES is the length of the request to send, which may include | |
10906 | binary data. WHICH_PACKET is the packet configuration to check | |
10907 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10908 | is set to the error number and -1 is returned. Otherwise the value | |
10909 | returned by the function is returned. | |
10910 | ||
10911 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10912 | attachment is expected; an error will be reported if there's a | |
10913 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10914 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10915 | attachment's length. */ | |
10916 | ||
10917 | static int | |
10918 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10919 | int *remote_errno, char **attachment, | |
10920 | int *attachment_len) | |
10921 | { | |
10922 | struct remote_state *rs = get_remote_state (); | |
10923 | int ret, bytes_read; | |
10924 | char *attachment_tmp; | |
10925 | ||
5d93a237 | 10926 | if (!rs->remote_desc |
4082afcc | 10927 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10928 | { |
10929 | *remote_errno = FILEIO_ENOSYS; | |
10930 | return -1; | |
10931 | } | |
10932 | ||
10933 | putpkt_binary (rs->buf, command_bytes); | |
10934 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10935 | ||
10936 | /* If it timed out, something is wrong. Don't try to parse the | |
10937 | buffer. */ | |
10938 | if (bytes_read < 0) | |
10939 | { | |
10940 | *remote_errno = FILEIO_EINVAL; | |
10941 | return -1; | |
10942 | } | |
10943 | ||
10944 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10945 | { | |
10946 | case PACKET_ERROR: | |
10947 | *remote_errno = FILEIO_EINVAL; | |
10948 | return -1; | |
10949 | case PACKET_UNKNOWN: | |
10950 | *remote_errno = FILEIO_ENOSYS; | |
10951 | return -1; | |
10952 | case PACKET_OK: | |
10953 | break; | |
10954 | } | |
10955 | ||
10956 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10957 | &attachment_tmp)) | |
10958 | { | |
10959 | *remote_errno = FILEIO_EINVAL; | |
10960 | return -1; | |
10961 | } | |
10962 | ||
10963 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10964 | if ((attachment_tmp == NULL && attachment != NULL) | |
10965 | || (attachment_tmp != NULL && attachment == NULL)) | |
10966 | { | |
10967 | *remote_errno = FILEIO_EINVAL; | |
10968 | return -1; | |
10969 | } | |
10970 | ||
10971 | /* If an attachment was found, it must point into the packet buffer; | |
10972 | work out how many bytes there were. */ | |
10973 | if (attachment_tmp != NULL) | |
10974 | { | |
10975 | *attachment = attachment_tmp; | |
10976 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10977 | } | |
10978 | ||
10979 | return ret; | |
10980 | } | |
10981 | ||
80152258 PA |
10982 | /* Invalidate the readahead cache. */ |
10983 | ||
10984 | static void | |
10985 | readahead_cache_invalidate (void) | |
10986 | { | |
10987 | struct remote_state *rs = get_remote_state (); | |
10988 | ||
10989 | rs->readahead_cache.fd = -1; | |
10990 | } | |
10991 | ||
10992 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10993 | ||
10994 | static void | |
10995 | readahead_cache_invalidate_fd (int fd) | |
10996 | { | |
10997 | struct remote_state *rs = get_remote_state (); | |
10998 | ||
10999 | if (rs->readahead_cache.fd == fd) | |
11000 | rs->readahead_cache.fd = -1; | |
11001 | } | |
11002 | ||
15a201c8 GB |
11003 | /* Set the filesystem remote_hostio functions that take FILENAME |
11004 | arguments will use. Return 0 on success, or -1 if an error | |
11005 | occurs (and set *REMOTE_ERRNO). */ | |
11006 | ||
11007 | static int | |
11008 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
11009 | { | |
11010 | struct remote_state *rs = get_remote_state (); | |
11011 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
11012 | char *p = rs->buf; | |
11013 | int left = get_remote_packet_size () - 1; | |
11014 | char arg[9]; | |
11015 | int ret; | |
11016 | ||
11017 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11018 | return 0; | |
11019 | ||
11020 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11021 | return 0; | |
11022 | ||
11023 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11024 | ||
11025 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11026 | remote_buffer_add_string (&p, &left, arg); | |
11027 | ||
11028 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
11029 | remote_errno, NULL, NULL); | |
11030 | ||
11031 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11032 | return 0; | |
11033 | ||
11034 | if (ret == 0) | |
11035 | rs->fs_pid = required_pid; | |
11036 | ||
11037 | return ret; | |
11038 | } | |
11039 | ||
12e2a5fd | 11040 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
11041 | |
11042 | static int | |
cd897586 | 11043 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 11044 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
11045 | int flags, int mode, int warn_if_slow, |
11046 | int *remote_errno) | |
a6b151f1 DJ |
11047 | { |
11048 | struct remote_state *rs = get_remote_state (); | |
11049 | char *p = rs->buf; | |
11050 | int left = get_remote_packet_size () - 1; | |
11051 | ||
4313b8c0 GB |
11052 | if (warn_if_slow) |
11053 | { | |
11054 | static int warning_issued = 0; | |
11055 | ||
11056 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11057 | filename); | |
11058 | ||
11059 | if (!warning_issued) | |
11060 | { | |
11061 | warning (_("File transfers from remote targets can be slow." | |
11062 | " Use \"set sysroot\" to access files locally" | |
11063 | " instead.")); | |
11064 | warning_issued = 1; | |
11065 | } | |
11066 | } | |
11067 | ||
15a201c8 GB |
11068 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11069 | return -1; | |
11070 | ||
a6b151f1 DJ |
11071 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11072 | ||
11073 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11074 | strlen (filename)); | |
11075 | remote_buffer_add_string (&p, &left, ","); | |
11076 | ||
11077 | remote_buffer_add_int (&p, &left, flags); | |
11078 | remote_buffer_add_string (&p, &left, ","); | |
11079 | ||
11080 | remote_buffer_add_int (&p, &left, mode); | |
11081 | ||
11082 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
11083 | remote_errno, NULL, NULL); | |
11084 | } | |
11085 | ||
12e2a5fd | 11086 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
11087 | |
11088 | static int | |
0d866f62 TT |
11089 | remote_hostio_pwrite (struct target_ops *self, |
11090 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
11091 | ULONGEST offset, int *remote_errno) |
11092 | { | |
11093 | struct remote_state *rs = get_remote_state (); | |
11094 | char *p = rs->buf; | |
11095 | int left = get_remote_packet_size (); | |
11096 | int out_len; | |
11097 | ||
80152258 PA |
11098 | readahead_cache_invalidate_fd (fd); |
11099 | ||
a6b151f1 DJ |
11100 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11101 | ||
11102 | remote_buffer_add_int (&p, &left, fd); | |
11103 | remote_buffer_add_string (&p, &left, ","); | |
11104 | ||
11105 | remote_buffer_add_int (&p, &left, offset); | |
11106 | remote_buffer_add_string (&p, &left, ","); | |
11107 | ||
124e13d9 | 11108 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
11109 | get_remote_packet_size () - (p - rs->buf)); |
11110 | ||
11111 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
11112 | remote_errno, NULL, NULL); | |
11113 | } | |
11114 | ||
80152258 PA |
11115 | /* Helper for the implementation of to_fileio_pread. Read the file |
11116 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
11117 | |
11118 | static int | |
80152258 PA |
11119 | remote_hostio_pread_vFile (struct target_ops *self, |
11120 | int fd, gdb_byte *read_buf, int len, | |
11121 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11122 | { |
11123 | struct remote_state *rs = get_remote_state (); | |
11124 | char *p = rs->buf; | |
11125 | char *attachment; | |
11126 | int left = get_remote_packet_size (); | |
11127 | int ret, attachment_len; | |
11128 | int read_len; | |
11129 | ||
11130 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11131 | ||
11132 | remote_buffer_add_int (&p, &left, fd); | |
11133 | remote_buffer_add_string (&p, &left, ","); | |
11134 | ||
11135 | remote_buffer_add_int (&p, &left, len); | |
11136 | remote_buffer_add_string (&p, &left, ","); | |
11137 | ||
11138 | remote_buffer_add_int (&p, &left, offset); | |
11139 | ||
11140 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
11141 | remote_errno, &attachment, | |
11142 | &attachment_len); | |
11143 | ||
11144 | if (ret < 0) | |
11145 | return ret; | |
11146 | ||
bc20a4af | 11147 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11148 | read_buf, len); |
11149 | if (read_len != ret) | |
11150 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11151 | ||
11152 | return ret; | |
11153 | } | |
11154 | ||
80152258 PA |
11155 | /* Serve pread from the readahead cache. Returns number of bytes |
11156 | read, or 0 if the request can't be served from the cache. */ | |
11157 | ||
11158 | static int | |
11159 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
11160 | int fd, gdb_byte *read_buf, size_t len, | |
11161 | ULONGEST offset) | |
11162 | { | |
11163 | struct readahead_cache *cache = &rs->readahead_cache; | |
11164 | ||
11165 | if (cache->fd == fd | |
11166 | && cache->offset <= offset | |
11167 | && offset < cache->offset + cache->bufsize) | |
11168 | { | |
11169 | ULONGEST max = cache->offset + cache->bufsize; | |
11170 | ||
11171 | if (offset + len > max) | |
11172 | len = max - offset; | |
11173 | ||
11174 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
11175 | return len; | |
11176 | } | |
11177 | ||
11178 | return 0; | |
11179 | } | |
11180 | ||
11181 | /* Implementation of to_fileio_pread. */ | |
11182 | ||
11183 | static int | |
11184 | remote_hostio_pread (struct target_ops *self, | |
11185 | int fd, gdb_byte *read_buf, int len, | |
11186 | ULONGEST offset, int *remote_errno) | |
11187 | { | |
11188 | int ret; | |
11189 | struct remote_state *rs = get_remote_state (); | |
11190 | struct readahead_cache *cache = &rs->readahead_cache; | |
11191 | ||
11192 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11193 | if (ret > 0) | |
11194 | { | |
11195 | cache->hit_count++; | |
11196 | ||
11197 | if (remote_debug) | |
11198 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
11199 | pulongest (cache->hit_count)); | |
11200 | return ret; | |
11201 | } | |
11202 | ||
11203 | cache->miss_count++; | |
11204 | if (remote_debug) | |
11205 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
11206 | pulongest (cache->miss_count)); | |
11207 | ||
11208 | cache->fd = fd; | |
11209 | cache->offset = offset; | |
11210 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 11211 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
11212 | |
11213 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
11214 | cache->offset, remote_errno); | |
11215 | if (ret <= 0) | |
11216 | { | |
11217 | readahead_cache_invalidate_fd (fd); | |
11218 | return ret; | |
11219 | } | |
11220 | ||
11221 | cache->bufsize = ret; | |
11222 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
11223 | } | |
11224 | ||
12e2a5fd | 11225 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
11226 | |
11227 | static int | |
df39ea25 | 11228 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
11229 | { |
11230 | struct remote_state *rs = get_remote_state (); | |
11231 | char *p = rs->buf; | |
11232 | int left = get_remote_packet_size () - 1; | |
11233 | ||
80152258 PA |
11234 | readahead_cache_invalidate_fd (fd); |
11235 | ||
a6b151f1 DJ |
11236 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
11237 | ||
11238 | remote_buffer_add_int (&p, &left, fd); | |
11239 | ||
11240 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
11241 | remote_errno, NULL, NULL); | |
11242 | } | |
11243 | ||
12e2a5fd | 11244 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
11245 | |
11246 | static int | |
dbbca37d | 11247 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
11248 | struct inferior *inf, const char *filename, |
11249 | int *remote_errno) | |
a6b151f1 DJ |
11250 | { |
11251 | struct remote_state *rs = get_remote_state (); | |
11252 | char *p = rs->buf; | |
11253 | int left = get_remote_packet_size () - 1; | |
11254 | ||
15a201c8 GB |
11255 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11256 | return -1; | |
11257 | ||
a6b151f1 DJ |
11258 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
11259 | ||
11260 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11261 | strlen (filename)); | |
11262 | ||
11263 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
11264 | remote_errno, NULL, NULL); | |
11265 | } | |
11266 | ||
12e2a5fd | 11267 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
11268 | |
11269 | static char * | |
fab5aa7c | 11270 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
11271 | struct inferior *inf, const char *filename, |
11272 | int *remote_errno) | |
b9e7b9c3 UW |
11273 | { |
11274 | struct remote_state *rs = get_remote_state (); | |
11275 | char *p = rs->buf; | |
11276 | char *attachment; | |
11277 | int left = get_remote_packet_size (); | |
11278 | int len, attachment_len; | |
11279 | int read_len; | |
11280 | char *ret; | |
11281 | ||
15a201c8 GB |
11282 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11283 | return NULL; | |
11284 | ||
b9e7b9c3 UW |
11285 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
11286 | ||
11287 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11288 | strlen (filename)); | |
11289 | ||
11290 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
11291 | remote_errno, &attachment, | |
11292 | &attachment_len); | |
11293 | ||
11294 | if (len < 0) | |
11295 | return NULL; | |
11296 | ||
224c3ddb | 11297 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 11298 | |
bc20a4af PA |
11299 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11300 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
11301 | if (read_len != len) |
11302 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
11303 | ||
11304 | ret[len] = '\0'; | |
11305 | return ret; | |
11306 | } | |
11307 | ||
12e2a5fd | 11308 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
11309 | |
11310 | static int | |
11311 | remote_hostio_fstat (struct target_ops *self, | |
11312 | int fd, struct stat *st, | |
11313 | int *remote_errno) | |
11314 | { | |
11315 | struct remote_state *rs = get_remote_state (); | |
11316 | char *p = rs->buf; | |
11317 | int left = get_remote_packet_size (); | |
11318 | int attachment_len, ret; | |
11319 | char *attachment; | |
11320 | struct fio_stat fst; | |
11321 | int read_len; | |
11322 | ||
464b0089 GB |
11323 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
11324 | ||
11325 | remote_buffer_add_int (&p, &left, fd); | |
11326 | ||
11327 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
11328 | remote_errno, &attachment, | |
11329 | &attachment_len); | |
11330 | if (ret < 0) | |
0a93529c | 11331 | { |
464b0089 GB |
11332 | if (*remote_errno != FILEIO_ENOSYS) |
11333 | return ret; | |
11334 | ||
0a93529c GB |
11335 | /* Strictly we should return -1, ENOSYS here, but when |
11336 | "set sysroot remote:" was implemented in August 2008 | |
11337 | BFD's need for a stat function was sidestepped with | |
11338 | this hack. This was not remedied until March 2015 | |
11339 | so we retain the previous behavior to avoid breaking | |
11340 | compatibility. | |
11341 | ||
11342 | Note that the memset is a March 2015 addition; older | |
11343 | GDBs set st_size *and nothing else* so the structure | |
11344 | would have garbage in all other fields. This might | |
11345 | break something but retaining the previous behavior | |
11346 | here would be just too wrong. */ | |
11347 | ||
11348 | memset (st, 0, sizeof (struct stat)); | |
11349 | st->st_size = INT_MAX; | |
11350 | return 0; | |
11351 | } | |
11352 | ||
0a93529c GB |
11353 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11354 | (gdb_byte *) &fst, sizeof (fst)); | |
11355 | ||
11356 | if (read_len != ret) | |
11357 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11358 | ||
11359 | if (read_len != sizeof (fst)) | |
11360 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11361 | read_len, (int) sizeof (fst)); | |
11362 | ||
11363 | remote_fileio_to_host_stat (&fst, st); | |
11364 | ||
11365 | return 0; | |
11366 | } | |
11367 | ||
12e2a5fd | 11368 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11369 | |
11370 | static int | |
11371 | remote_filesystem_is_local (struct target_ops *self) | |
11372 | { | |
11373 | /* Valgrind GDB presents itself as a remote target but works | |
11374 | on the local filesystem: it does not implement remote get | |
11375 | and users are not expected to set a sysroot. To handle | |
11376 | this case we treat the remote filesystem as local if the | |
11377 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11378 | does not support vFile:open. */ | |
a3be80c3 | 11379 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11380 | { |
11381 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11382 | ||
11383 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11384 | { | |
11385 | int fd, remote_errno; | |
11386 | ||
11387 | /* Try opening a file to probe support. The supplied | |
11388 | filename is irrelevant, we only care about whether | |
11389 | the stub recognizes the packet or not. */ | |
07c138c8 | 11390 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11391 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11392 | &remote_errno); |
11393 | ||
11394 | if (fd >= 0) | |
11395 | remote_hostio_close (self, fd, &remote_errno); | |
11396 | ||
11397 | ps = packet_support (PACKET_vFile_open); | |
11398 | } | |
11399 | ||
11400 | if (ps == PACKET_DISABLE) | |
11401 | { | |
11402 | static int warning_issued = 0; | |
11403 | ||
11404 | if (!warning_issued) | |
11405 | { | |
11406 | warning (_("remote target does not support file" | |
11407 | " transfer, attempting to access files" | |
11408 | " from local filesystem.")); | |
11409 | warning_issued = 1; | |
11410 | } | |
11411 | ||
11412 | return 1; | |
11413 | } | |
11414 | } | |
11415 | ||
11416 | return 0; | |
11417 | } | |
11418 | ||
a6b151f1 DJ |
11419 | static int |
11420 | remote_fileio_errno_to_host (int errnum) | |
11421 | { | |
11422 | switch (errnum) | |
11423 | { | |
11424 | case FILEIO_EPERM: | |
11425 | return EPERM; | |
11426 | case FILEIO_ENOENT: | |
11427 | return ENOENT; | |
11428 | case FILEIO_EINTR: | |
11429 | return EINTR; | |
11430 | case FILEIO_EIO: | |
11431 | return EIO; | |
11432 | case FILEIO_EBADF: | |
11433 | return EBADF; | |
11434 | case FILEIO_EACCES: | |
11435 | return EACCES; | |
11436 | case FILEIO_EFAULT: | |
11437 | return EFAULT; | |
11438 | case FILEIO_EBUSY: | |
11439 | return EBUSY; | |
11440 | case FILEIO_EEXIST: | |
11441 | return EEXIST; | |
11442 | case FILEIO_ENODEV: | |
11443 | return ENODEV; | |
11444 | case FILEIO_ENOTDIR: | |
11445 | return ENOTDIR; | |
11446 | case FILEIO_EISDIR: | |
11447 | return EISDIR; | |
11448 | case FILEIO_EINVAL: | |
11449 | return EINVAL; | |
11450 | case FILEIO_ENFILE: | |
11451 | return ENFILE; | |
11452 | case FILEIO_EMFILE: | |
11453 | return EMFILE; | |
11454 | case FILEIO_EFBIG: | |
11455 | return EFBIG; | |
11456 | case FILEIO_ENOSPC: | |
11457 | return ENOSPC; | |
11458 | case FILEIO_ESPIPE: | |
11459 | return ESPIPE; | |
11460 | case FILEIO_EROFS: | |
11461 | return EROFS; | |
11462 | case FILEIO_ENOSYS: | |
11463 | return ENOSYS; | |
11464 | case FILEIO_ENAMETOOLONG: | |
11465 | return ENAMETOOLONG; | |
11466 | } | |
11467 | return -1; | |
11468 | } | |
11469 | ||
11470 | static char * | |
11471 | remote_hostio_error (int errnum) | |
11472 | { | |
11473 | int host_error = remote_fileio_errno_to_host (errnum); | |
11474 | ||
11475 | if (host_error == -1) | |
11476 | error (_("Unknown remote I/O error %d"), errnum); | |
11477 | else | |
11478 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11479 | } | |
11480 | ||
a6b151f1 DJ |
11481 | static void |
11482 | remote_hostio_close_cleanup (void *opaque) | |
11483 | { | |
11484 | int fd = *(int *) opaque; | |
11485 | int remote_errno; | |
11486 | ||
df39ea25 | 11487 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11488 | } |
11489 | ||
11490 | void | |
11491 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11492 | { | |
11493 | struct cleanup *back_to, *close_cleanup; | |
11494 | int retcode, fd, remote_errno, bytes, io_size; | |
11495 | FILE *file; | |
11496 | gdb_byte *buffer; | |
11497 | int bytes_in_buffer; | |
11498 | int saw_eof; | |
11499 | ULONGEST offset; | |
5d93a237 | 11500 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11501 | |
5d93a237 | 11502 | if (!rs->remote_desc) |
a6b151f1 DJ |
11503 | error (_("command can only be used with remote target")); |
11504 | ||
614c279d | 11505 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11506 | if (file == NULL) |
11507 | perror_with_name (local_file); | |
7c8a8b04 | 11508 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11509 | |
07c138c8 | 11510 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11511 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11512 | | FILEIO_O_TRUNC), |
4313b8c0 | 11513 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11514 | if (fd == -1) |
11515 | remote_hostio_error (remote_errno); | |
11516 | ||
11517 | /* Send up to this many bytes at once. They won't all fit in the | |
11518 | remote packet limit, so we'll transfer slightly fewer. */ | |
11519 | io_size = get_remote_packet_size (); | |
224c3ddb | 11520 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11521 | make_cleanup (xfree, buffer); |
11522 | ||
11523 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11524 | ||
11525 | bytes_in_buffer = 0; | |
11526 | saw_eof = 0; | |
11527 | offset = 0; | |
11528 | while (bytes_in_buffer || !saw_eof) | |
11529 | { | |
11530 | if (!saw_eof) | |
11531 | { | |
3e43a32a MS |
11532 | bytes = fread (buffer + bytes_in_buffer, 1, |
11533 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11534 | file); |
11535 | if (bytes == 0) | |
11536 | { | |
11537 | if (ferror (file)) | |
11538 | error (_("Error reading %s."), local_file); | |
11539 | else | |
11540 | { | |
11541 | /* EOF. Unless there is something still in the | |
11542 | buffer from the last iteration, we are done. */ | |
11543 | saw_eof = 1; | |
11544 | if (bytes_in_buffer == 0) | |
11545 | break; | |
11546 | } | |
11547 | } | |
11548 | } | |
11549 | else | |
11550 | bytes = 0; | |
11551 | ||
11552 | bytes += bytes_in_buffer; | |
11553 | bytes_in_buffer = 0; | |
11554 | ||
0d866f62 TT |
11555 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11556 | fd, buffer, bytes, | |
3e43a32a | 11557 | offset, &remote_errno); |
a6b151f1 DJ |
11558 | |
11559 | if (retcode < 0) | |
11560 | remote_hostio_error (remote_errno); | |
11561 | else if (retcode == 0) | |
11562 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11563 | else if (retcode < bytes) | |
11564 | { | |
11565 | /* Short write. Save the rest of the read data for the next | |
11566 | write. */ | |
11567 | bytes_in_buffer = bytes - retcode; | |
11568 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11569 | } | |
11570 | ||
11571 | offset += retcode; | |
11572 | } | |
11573 | ||
11574 | discard_cleanups (close_cleanup); | |
df39ea25 | 11575 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11576 | remote_hostio_error (remote_errno); |
11577 | ||
11578 | if (from_tty) | |
11579 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11580 | do_cleanups (back_to); | |
11581 | } | |
11582 | ||
11583 | void | |
11584 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11585 | { | |
11586 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11587 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11588 | FILE *file; |
11589 | gdb_byte *buffer; | |
11590 | ULONGEST offset; | |
5d93a237 | 11591 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11592 | |
5d93a237 | 11593 | if (!rs->remote_desc) |
a6b151f1 DJ |
11594 | error (_("command can only be used with remote target")); |
11595 | ||
07c138c8 | 11596 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11597 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11598 | &remote_errno); | |
a6b151f1 DJ |
11599 | if (fd == -1) |
11600 | remote_hostio_error (remote_errno); | |
11601 | ||
614c279d | 11602 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11603 | if (file == NULL) |
11604 | perror_with_name (local_file); | |
7c8a8b04 | 11605 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11606 | |
11607 | /* Send up to this many bytes at once. They won't all fit in the | |
11608 | remote packet limit, so we'll transfer slightly fewer. */ | |
11609 | io_size = get_remote_packet_size (); | |
224c3ddb | 11610 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11611 | make_cleanup (xfree, buffer); |
11612 | ||
11613 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11614 | ||
11615 | offset = 0; | |
11616 | while (1) | |
11617 | { | |
a3be983c TT |
11618 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11619 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11620 | if (bytes == 0) |
11621 | /* Success, but no bytes, means end-of-file. */ | |
11622 | break; | |
11623 | if (bytes == -1) | |
11624 | remote_hostio_error (remote_errno); | |
11625 | ||
11626 | offset += bytes; | |
11627 | ||
11628 | bytes = fwrite (buffer, 1, bytes, file); | |
11629 | if (bytes == 0) | |
11630 | perror_with_name (local_file); | |
11631 | } | |
11632 | ||
11633 | discard_cleanups (close_cleanup); | |
df39ea25 | 11634 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11635 | remote_hostio_error (remote_errno); |
11636 | ||
11637 | if (from_tty) | |
11638 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11639 | do_cleanups (back_to); | |
11640 | } | |
11641 | ||
11642 | void | |
11643 | remote_file_delete (const char *remote_file, int from_tty) | |
11644 | { | |
11645 | int retcode, remote_errno; | |
5d93a237 | 11646 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11647 | |
5d93a237 | 11648 | if (!rs->remote_desc) |
a6b151f1 DJ |
11649 | error (_("command can only be used with remote target")); |
11650 | ||
dbbca37d | 11651 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11652 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11653 | if (retcode == -1) |
11654 | remote_hostio_error (remote_errno); | |
11655 | ||
11656 | if (from_tty) | |
11657 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11658 | } | |
11659 | ||
11660 | static void | |
11661 | remote_put_command (char *args, int from_tty) | |
11662 | { | |
11663 | struct cleanup *back_to; | |
11664 | char **argv; | |
11665 | ||
d1a41061 PP |
11666 | if (args == NULL) |
11667 | error_no_arg (_("file to put")); | |
11668 | ||
11669 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11670 | back_to = make_cleanup_freeargv (argv); |
11671 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11672 | error (_("Invalid parameters to remote put")); | |
11673 | ||
11674 | remote_file_put (argv[0], argv[1], from_tty); | |
11675 | ||
11676 | do_cleanups (back_to); | |
11677 | } | |
11678 | ||
11679 | static void | |
11680 | remote_get_command (char *args, int from_tty) | |
11681 | { | |
11682 | struct cleanup *back_to; | |
11683 | char **argv; | |
11684 | ||
d1a41061 PP |
11685 | if (args == NULL) |
11686 | error_no_arg (_("file to get")); | |
11687 | ||
11688 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11689 | back_to = make_cleanup_freeargv (argv); |
11690 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11691 | error (_("Invalid parameters to remote get")); | |
11692 | ||
11693 | remote_file_get (argv[0], argv[1], from_tty); | |
11694 | ||
11695 | do_cleanups (back_to); | |
11696 | } | |
11697 | ||
11698 | static void | |
11699 | remote_delete_command (char *args, int from_tty) | |
11700 | { | |
11701 | struct cleanup *back_to; | |
11702 | char **argv; | |
11703 | ||
d1a41061 PP |
11704 | if (args == NULL) |
11705 | error_no_arg (_("file to delete")); | |
11706 | ||
11707 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11708 | back_to = make_cleanup_freeargv (argv); |
11709 | if (argv[0] == NULL || argv[1] != NULL) | |
11710 | error (_("Invalid parameters to remote delete")); | |
11711 | ||
11712 | remote_file_delete (argv[0], from_tty); | |
11713 | ||
11714 | do_cleanups (back_to); | |
11715 | } | |
11716 | ||
11717 | static void | |
11718 | remote_command (char *args, int from_tty) | |
11719 | { | |
635c7e8a | 11720 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11721 | } |
11722 | ||
b2175913 | 11723 | static int |
19db3e69 | 11724 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11725 | { |
4082afcc PA |
11726 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11727 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11728 | return 1; |
11729 | else | |
11730 | return 0; | |
b2175913 MS |
11731 | } |
11732 | ||
74531fed | 11733 | static int |
2a9a2795 | 11734 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11735 | { |
11736 | return 1; | |
11737 | } | |
11738 | ||
03583c20 | 11739 | static int |
2bfc0540 | 11740 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11741 | { |
11742 | /* Only supported in extended mode. */ | |
11743 | return 0; | |
11744 | } | |
11745 | ||
8a305172 | 11746 | static int |
86ce2668 | 11747 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11748 | { |
11749 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11750 | |
8020350c | 11751 | return remote_multi_process_p (rs); |
8a305172 PA |
11752 | } |
11753 | ||
70221824 | 11754 | static int |
782b2b07 SS |
11755 | remote_supports_cond_tracepoints (void) |
11756 | { | |
4082afcc | 11757 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11758 | } |
11759 | ||
3788aec7 | 11760 | static int |
efcc2da7 | 11761 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11762 | { |
4082afcc | 11763 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11764 | } |
11765 | ||
70221824 | 11766 | static int |
7a697b8d SS |
11767 | remote_supports_fast_tracepoints (void) |
11768 | { | |
4082afcc | 11769 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11770 | } |
11771 | ||
0fb4aa4b PA |
11772 | static int |
11773 | remote_supports_static_tracepoints (void) | |
11774 | { | |
4082afcc | 11775 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11776 | } |
11777 | ||
1e4d1764 YQ |
11778 | static int |
11779 | remote_supports_install_in_trace (void) | |
11780 | { | |
4082afcc | 11781 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11782 | } |
11783 | ||
d248b706 | 11784 | static int |
7d178d6a | 11785 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11786 | { |
4082afcc PA |
11787 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11788 | == PACKET_ENABLE); | |
d248b706 KY |
11789 | } |
11790 | ||
3065dfb6 | 11791 | static int |
6de37a3a | 11792 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11793 | { |
4082afcc | 11794 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11795 | } |
11796 | ||
d3ce09f5 | 11797 | static int |
78eff0ec | 11798 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11799 | { |
4082afcc | 11800 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11801 | } |
11802 | ||
35b1e5cc | 11803 | static void |
ecae04e1 | 11804 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11805 | { |
11806 | putpkt ("QTinit"); | |
11807 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11808 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11809 | error (_("Target does not support this command.")); |
11810 | } | |
11811 | ||
11812 | static void free_actions_list (char **actions_list); | |
11813 | static void free_actions_list_cleanup_wrapper (void *); | |
11814 | static void | |
11815 | free_actions_list_cleanup_wrapper (void *al) | |
11816 | { | |
19ba03f4 | 11817 | free_actions_list ((char **) al); |
35b1e5cc SS |
11818 | } |
11819 | ||
11820 | static void | |
11821 | free_actions_list (char **actions_list) | |
11822 | { | |
11823 | int ndx; | |
11824 | ||
11825 | if (actions_list == 0) | |
11826 | return; | |
11827 | ||
11828 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11829 | xfree (actions_list[ndx]); | |
11830 | ||
11831 | xfree (actions_list); | |
11832 | } | |
11833 | ||
409873ef SS |
11834 | /* Recursive routine to walk through command list including loops, and |
11835 | download packets for each command. */ | |
11836 | ||
11837 | static void | |
11838 | remote_download_command_source (int num, ULONGEST addr, | |
11839 | struct command_line *cmds) | |
11840 | { | |
11841 | struct remote_state *rs = get_remote_state (); | |
11842 | struct command_line *cmd; | |
11843 | ||
11844 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11845 | { | |
0df8b418 | 11846 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11847 | strcpy (rs->buf, "QTDPsrc:"); |
11848 | encode_source_string (num, addr, "cmd", cmd->line, | |
11849 | rs->buf + strlen (rs->buf), | |
11850 | rs->buf_size - strlen (rs->buf)); | |
11851 | putpkt (rs->buf); | |
11852 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11853 | if (strcmp (target_buf, "OK")) | |
11854 | warning (_("Target does not support source download.")); | |
11855 | ||
11856 | if (cmd->control_type == while_control | |
11857 | || cmd->control_type == while_stepping_control) | |
11858 | { | |
11859 | remote_download_command_source (num, addr, *cmd->body_list); | |
11860 | ||
0df8b418 | 11861 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11862 | strcpy (rs->buf, "QTDPsrc:"); |
11863 | encode_source_string (num, addr, "cmd", "end", | |
11864 | rs->buf + strlen (rs->buf), | |
11865 | rs->buf_size - strlen (rs->buf)); | |
11866 | putpkt (rs->buf); | |
11867 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11868 | if (strcmp (target_buf, "OK")) | |
11869 | warning (_("Target does not support source download.")); | |
11870 | } | |
11871 | } | |
11872 | } | |
11873 | ||
35b1e5cc | 11874 | static void |
548f7808 | 11875 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11876 | { |
bba74b36 | 11877 | #define BUF_SIZE 2048 |
e8ba3115 | 11878 | |
35b1e5cc | 11879 | CORE_ADDR tpaddr; |
409873ef | 11880 | char addrbuf[40]; |
bba74b36 | 11881 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11882 | char **tdp_actions; |
11883 | char **stepping_actions; | |
11884 | int ndx; | |
11885 | struct cleanup *old_chain = NULL; | |
11886 | struct agent_expr *aexpr; | |
11887 | struct cleanup *aexpr_chain = NULL; | |
11888 | char *pkt; | |
e8ba3115 | 11889 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11890 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11891 | |
dc673c81 | 11892 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11893 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11894 | tdp_actions); | |
11895 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11896 | stepping_actions); | |
11897 | ||
11898 | tpaddr = loc->address; | |
11899 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11900 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11901 | addrbuf, /* address */ | |
11902 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11903 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11904 | /* Fast tracepoints are mostly handled by the target, but we can |
11905 | tell the target how big of an instruction block should be moved | |
11906 | around. */ | |
11907 | if (b->type == bp_fast_tracepoint) | |
11908 | { | |
11909 | /* Only test for support at download time; we may not know | |
11910 | target capabilities at definition time. */ | |
11911 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11912 | { |
6b940e6a PL |
11913 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11914 | NULL)) | |
bba74b36 | 11915 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11916 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11917 | else |
e8ba3115 YQ |
11918 | /* If it passed validation at definition but fails now, |
11919 | something is very wrong. */ | |
11920 | internal_error (__FILE__, __LINE__, | |
11921 | _("Fast tracepoint not " | |
11922 | "valid during download")); | |
35b1e5cc | 11923 | } |
e8ba3115 YQ |
11924 | else |
11925 | /* Fast tracepoints are functionally identical to regular | |
11926 | tracepoints, so don't take lack of support as a reason to | |
11927 | give up on the trace run. */ | |
11928 | warning (_("Target does not support fast tracepoints, " | |
11929 | "downloading %d as regular tracepoint"), b->number); | |
11930 | } | |
11931 | else if (b->type == bp_static_tracepoint) | |
11932 | { | |
11933 | /* Only test for support at download time; we may not know | |
11934 | target capabilities at definition time. */ | |
11935 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11936 | { |
e8ba3115 | 11937 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11938 | |
e8ba3115 YQ |
11939 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11940 | strcat (buf, ":S"); | |
0fb4aa4b | 11941 | else |
e8ba3115 | 11942 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11943 | } |
e8ba3115 YQ |
11944 | else |
11945 | /* Fast tracepoints are functionally identical to regular | |
11946 | tracepoints, so don't take lack of support as a reason | |
11947 | to give up on the trace run. */ | |
11948 | error (_("Target does not support static tracepoints")); | |
11949 | } | |
11950 | /* If the tracepoint has a conditional, make it into an agent | |
11951 | expression and append to the definition. */ | |
11952 | if (loc->cond) | |
11953 | { | |
11954 | /* Only test support at download time, we may not know target | |
11955 | capabilities at definition time. */ | |
11956 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11957 | { |
e8ba3115 YQ |
11958 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11959 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11960 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11961 | aexpr->len); | |
e8ba3115 YQ |
11962 | pkt = buf + strlen (buf); |
11963 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11964 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11965 | *pkt = '\0'; | |
11966 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11967 | } |
e8ba3115 YQ |
11968 | else |
11969 | warning (_("Target does not support conditional tracepoints, " | |
11970 | "ignoring tp %d cond"), b->number); | |
11971 | } | |
35b1e5cc | 11972 | |
d9b3f62e | 11973 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11974 | strcat (buf, "-"); |
11975 | putpkt (buf); | |
11976 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11977 | if (strcmp (target_buf, "OK")) | |
11978 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11979 | |
e8ba3115 YQ |
11980 | /* do_single_steps (t); */ |
11981 | if (tdp_actions) | |
11982 | { | |
11983 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11984 | { |
e8ba3115 | 11985 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11986 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11987 | b->number, addrbuf, /* address */ | |
11988 | tdp_actions[ndx], | |
11989 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11990 | ? '-' : 0)); | |
e8ba3115 YQ |
11991 | putpkt (buf); |
11992 | remote_get_noisy_reply (&target_buf, | |
11993 | &target_buf_size); | |
11994 | if (strcmp (target_buf, "OK")) | |
11995 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11996 | } |
e8ba3115 YQ |
11997 | } |
11998 | if (stepping_actions) | |
11999 | { | |
12000 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 12001 | { |
e8ba3115 | 12002 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
12003 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
12004 | b->number, addrbuf, /* address */ | |
12005 | ((ndx == 0) ? "S" : ""), | |
12006 | stepping_actions[ndx], | |
12007 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
12008 | putpkt (buf); |
12009 | remote_get_noisy_reply (&target_buf, | |
12010 | &target_buf_size); | |
12011 | if (strcmp (target_buf, "OK")) | |
12012 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 12013 | } |
e8ba3115 | 12014 | } |
409873ef | 12015 | |
4082afcc | 12016 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12017 | { |
f00aae0f | 12018 | if (b->location != NULL) |
409873ef | 12019 | { |
e8ba3115 | 12020 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
12021 | encode_source_string (b->number, loc->address, "at", |
12022 | event_location_to_string (b->location), | |
12023 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
12024 | putpkt (buf); |
12025 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12026 | if (strcmp (target_buf, "OK")) | |
12027 | warning (_("Target does not support source download.")); | |
409873ef | 12028 | } |
e8ba3115 YQ |
12029 | if (b->cond_string) |
12030 | { | |
12031 | strcpy (buf, "QTDPsrc:"); | |
12032 | encode_source_string (b->number, loc->address, | |
12033 | "cond", b->cond_string, buf + strlen (buf), | |
12034 | 2048 - strlen (buf)); | |
12035 | putpkt (buf); | |
12036 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12037 | if (strcmp (target_buf, "OK")) | |
12038 | warning (_("Target does not support source download.")); | |
12039 | } | |
12040 | remote_download_command_source (b->number, loc->address, | |
12041 | breakpoint_commands (b)); | |
35b1e5cc | 12042 | } |
e8ba3115 YQ |
12043 | |
12044 | do_cleanups (old_chain); | |
35b1e5cc SS |
12045 | } |
12046 | ||
1e4d1764 | 12047 | static int |
a52a8357 | 12048 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 12049 | { |
1e51243a PA |
12050 | struct remote_state *rs = get_remote_state (); |
12051 | struct trace_status *ts; | |
12052 | int status; | |
12053 | ||
12054 | /* Don't try to install tracepoints until we've relocated our | |
12055 | symbols, and fetched and merged the target's tracepoint list with | |
12056 | ours. */ | |
12057 | if (rs->starting_up) | |
12058 | return 0; | |
12059 | ||
12060 | ts = current_trace_status (); | |
8bd200f1 | 12061 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
12062 | |
12063 | if (status == -1 || !ts->running_known || !ts->running) | |
12064 | return 0; | |
12065 | ||
12066 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12067 | installing tracepoint in trace, we have to return. */ | |
12068 | if (!remote_supports_install_in_trace ()) | |
12069 | return 0; | |
12070 | ||
12071 | return 1; | |
12072 | } | |
12073 | ||
12074 | ||
35b1e5cc | 12075 | static void |
559d2b81 TT |
12076 | remote_download_trace_state_variable (struct target_ops *self, |
12077 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
12078 | { |
12079 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12080 | char *p; |
35b1e5cc | 12081 | |
bba74b36 YQ |
12082 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
12083 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
12084 | tsv->builtin); | |
00bf0b85 SS |
12085 | p = rs->buf + strlen (rs->buf); |
12086 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
12087 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 12088 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 12089 | *p++ = '\0'; |
35b1e5cc SS |
12090 | putpkt (rs->buf); |
12091 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12092 | if (*target_buf == '\0') |
12093 | error (_("Target does not support this command.")); | |
12094 | if (strcmp (target_buf, "OK") != 0) | |
12095 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
12096 | } |
12097 | ||
d248b706 | 12098 | static void |
46670d57 TT |
12099 | remote_enable_tracepoint (struct target_ops *self, |
12100 | struct bp_location *location) | |
d248b706 KY |
12101 | { |
12102 | struct remote_state *rs = get_remote_state (); | |
12103 | char addr_buf[40]; | |
12104 | ||
12105 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12106 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
12107 | location->owner->number, addr_buf); | |
d248b706 KY |
12108 | putpkt (rs->buf); |
12109 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12110 | if (*rs->buf == '\0') | |
12111 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
12112 | if (strcmp (rs->buf, "OK") != 0) | |
12113 | error (_("Error on target while enabling tracepoint.")); | |
12114 | } | |
12115 | ||
12116 | static void | |
780b049c TT |
12117 | remote_disable_tracepoint (struct target_ops *self, |
12118 | struct bp_location *location) | |
d248b706 KY |
12119 | { |
12120 | struct remote_state *rs = get_remote_state (); | |
12121 | char addr_buf[40]; | |
12122 | ||
12123 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
12124 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
12125 | location->owner->number, addr_buf); | |
d248b706 KY |
12126 | putpkt (rs->buf); |
12127 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12128 | if (*rs->buf == '\0') | |
12129 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
12130 | if (strcmp (rs->buf, "OK") != 0) | |
12131 | error (_("Error on target while disabling tracepoint.")); | |
12132 | } | |
12133 | ||
35b1e5cc | 12134 | static void |
583f9a86 | 12135 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
12136 | { |
12137 | asection *s; | |
81b9b86e | 12138 | bfd *abfd = NULL; |
35b1e5cc | 12139 | bfd_size_type size; |
608bcef2 | 12140 | bfd_vma vma; |
35b1e5cc | 12141 | int anysecs = 0; |
c2fa21f1 | 12142 | int offset = 0; |
35b1e5cc SS |
12143 | |
12144 | if (!exec_bfd) | |
12145 | return; /* No information to give. */ | |
12146 | ||
12147 | strcpy (target_buf, "QTro"); | |
9779ab84 | 12148 | offset = strlen (target_buf); |
35b1e5cc SS |
12149 | for (s = exec_bfd->sections; s; s = s->next) |
12150 | { | |
12151 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 12152 | int sec_length; |
35b1e5cc SS |
12153 | |
12154 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 12155 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
12156 | (s->flags & SEC_READONLY) == 0) |
12157 | continue; | |
12158 | ||
12159 | anysecs = 1; | |
81b9b86e | 12160 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 12161 | size = bfd_get_section_size (s); |
608bcef2 HZ |
12162 | sprintf_vma (tmp1, vma); |
12163 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
12164 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
12165 | if (offset + sec_length + 1 > target_buf_size) | |
12166 | { | |
4082afcc | 12167 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 12168 | warning (_("\ |
c2fa21f1 HZ |
12169 | Too many sections for read-only sections definition packet.")); |
12170 | break; | |
12171 | } | |
bba74b36 YQ |
12172 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
12173 | tmp1, tmp2); | |
c2fa21f1 | 12174 | offset += sec_length; |
35b1e5cc SS |
12175 | } |
12176 | if (anysecs) | |
12177 | { | |
12178 | putpkt (target_buf); | |
12179 | getpkt (&target_buf, &target_buf_size, 0); | |
12180 | } | |
12181 | } | |
12182 | ||
12183 | static void | |
e2d1aae3 | 12184 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
12185 | { |
12186 | putpkt ("QTStart"); | |
12187 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12188 | if (*target_buf == '\0') |
12189 | error (_("Target does not support this command.")); | |
12190 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12191 | error (_("Bogus reply from target: %s"), target_buf); |
12192 | } | |
12193 | ||
12194 | static int | |
8bd200f1 | 12195 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 12196 | { |
953b98d1 | 12197 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 12198 | char *p = NULL; |
0df8b418 | 12199 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 12200 | extern int trace_regblock_size; |
bd3eecc3 PA |
12201 | enum packet_result result; |
12202 | ||
4082afcc | 12203 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 12204 | return -1; |
a744cf53 | 12205 | |
00bf0b85 SS |
12206 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
12207 | ||
049dc89b JK |
12208 | putpkt ("qTStatus"); |
12209 | ||
492d29ea | 12210 | TRY |
67f41397 JK |
12211 | { |
12212 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12213 | } | |
492d29ea | 12214 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 12215 | { |
598d3636 JK |
12216 | if (ex.error != TARGET_CLOSE_ERROR) |
12217 | { | |
12218 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
12219 | return -1; | |
12220 | } | |
12221 | throw_exception (ex); | |
67f41397 | 12222 | } |
492d29ea | 12223 | END_CATCH |
00bf0b85 | 12224 | |
bd3eecc3 PA |
12225 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
12226 | ||
00bf0b85 | 12227 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 12228 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 12229 | return -1; |
35b1e5cc | 12230 | |
00bf0b85 | 12231 | /* We're working with a live target. */ |
f5911ea1 | 12232 | ts->filename = NULL; |
00bf0b85 | 12233 | |
00bf0b85 | 12234 | if (*p++ != 'T') |
35b1e5cc SS |
12235 | error (_("Bogus trace status reply from target: %s"), target_buf); |
12236 | ||
84cebc4a YQ |
12237 | /* Function 'parse_trace_status' sets default value of each field of |
12238 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
12239 | parse_trace_status (p, ts); |
12240 | ||
12241 | return ts->running; | |
35b1e5cc SS |
12242 | } |
12243 | ||
70221824 | 12244 | static void |
db90e85c | 12245 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
12246 | struct uploaded_tp *utp) |
12247 | { | |
12248 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
12249 | char *reply; |
12250 | struct bp_location *loc; | |
12251 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 12252 | size_t size = get_remote_packet_size (); |
f196051f SS |
12253 | |
12254 | if (tp) | |
12255 | { | |
12256 | tp->base.hit_count = 0; | |
12257 | tp->traceframe_usage = 0; | |
12258 | for (loc = tp->base.loc; loc; loc = loc->next) | |
12259 | { | |
12260 | /* If the tracepoint was never downloaded, don't go asking for | |
12261 | any status. */ | |
12262 | if (tp->number_on_target == 0) | |
12263 | continue; | |
bba74b36 YQ |
12264 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
12265 | phex_nz (loc->address, 0)); | |
f196051f SS |
12266 | putpkt (rs->buf); |
12267 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12268 | if (reply && *reply) | |
12269 | { | |
12270 | if (*reply == 'V') | |
12271 | parse_tracepoint_status (reply + 1, bp, utp); | |
12272 | } | |
12273 | } | |
12274 | } | |
12275 | else if (utp) | |
12276 | { | |
12277 | utp->hit_count = 0; | |
12278 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
12279 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
12280 | phex_nz (utp->addr, 0)); | |
f196051f SS |
12281 | putpkt (rs->buf); |
12282 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12283 | if (reply && *reply) | |
12284 | { | |
12285 | if (*reply == 'V') | |
12286 | parse_tracepoint_status (reply + 1, bp, utp); | |
12287 | } | |
12288 | } | |
12289 | } | |
12290 | ||
35b1e5cc | 12291 | static void |
74499f1b | 12292 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
12293 | { |
12294 | putpkt ("QTStop"); | |
12295 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
12296 | if (*target_buf == '\0') |
12297 | error (_("Target does not support this command.")); | |
12298 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
12299 | error (_("Bogus reply from target: %s"), target_buf); |
12300 | } | |
12301 | ||
12302 | static int | |
bd4c6793 TT |
12303 | remote_trace_find (struct target_ops *self, |
12304 | enum trace_find_type type, int num, | |
cc5925ad | 12305 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
12306 | int *tpp) |
12307 | { | |
12308 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 12309 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
12310 | char *p, *reply; |
12311 | int target_frameno = -1, target_tracept = -1; | |
12312 | ||
e6e4e701 PA |
12313 | /* Lookups other than by absolute frame number depend on the current |
12314 | trace selected, so make sure it is correct on the remote end | |
12315 | first. */ | |
12316 | if (type != tfind_number) | |
12317 | set_remote_traceframe (); | |
12318 | ||
35b1e5cc SS |
12319 | p = rs->buf; |
12320 | strcpy (p, "QTFrame:"); | |
12321 | p = strchr (p, '\0'); | |
12322 | switch (type) | |
12323 | { | |
12324 | case tfind_number: | |
bba74b36 | 12325 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
12326 | break; |
12327 | case tfind_pc: | |
bba74b36 | 12328 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
12329 | break; |
12330 | case tfind_tp: | |
bba74b36 | 12331 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
12332 | break; |
12333 | case tfind_range: | |
bba74b36 YQ |
12334 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
12335 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12336 | break; |
12337 | case tfind_outside: | |
bba74b36 YQ |
12338 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
12339 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
12340 | break; |
12341 | default: | |
9b20d036 | 12342 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
12343 | } |
12344 | ||
12345 | putpkt (rs->buf); | |
2f65bcb7 | 12346 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12347 | if (*reply == '\0') |
12348 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12349 | |
12350 | while (reply && *reply) | |
12351 | switch (*reply) | |
12352 | { | |
12353 | case 'F': | |
f197e0f1 VP |
12354 | p = ++reply; |
12355 | target_frameno = (int) strtol (p, &reply, 16); | |
12356 | if (reply == p) | |
12357 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12358 | /* Don't update our remote traceframe number cache on failure |
12359 | to select a remote traceframe. */ | |
f197e0f1 VP |
12360 | if (target_frameno == -1) |
12361 | return -1; | |
35b1e5cc SS |
12362 | break; |
12363 | case 'T': | |
f197e0f1 VP |
12364 | p = ++reply; |
12365 | target_tracept = (int) strtol (p, &reply, 16); | |
12366 | if (reply == p) | |
12367 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12368 | break; |
12369 | case 'O': /* "OK"? */ | |
12370 | if (reply[1] == 'K' && reply[2] == '\0') | |
12371 | reply += 2; | |
12372 | else | |
12373 | error (_("Bogus reply from target: %s"), reply); | |
12374 | break; | |
12375 | default: | |
12376 | error (_("Bogus reply from target: %s"), reply); | |
12377 | } | |
12378 | if (tpp) | |
12379 | *tpp = target_tracept; | |
e6e4e701 | 12380 | |
262e1174 | 12381 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12382 | return target_frameno; |
12383 | } | |
12384 | ||
12385 | static int | |
4011015b TT |
12386 | remote_get_trace_state_variable_value (struct target_ops *self, |
12387 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12388 | { |
12389 | struct remote_state *rs = get_remote_state (); | |
12390 | char *reply; | |
12391 | ULONGEST uval; | |
12392 | ||
e6e4e701 PA |
12393 | set_remote_traceframe (); |
12394 | ||
bba74b36 | 12395 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12396 | putpkt (rs->buf); |
12397 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12398 | if (reply && *reply) | |
12399 | { | |
12400 | if (*reply == 'V') | |
12401 | { | |
12402 | unpack_varlen_hex (reply + 1, &uval); | |
12403 | *val = (LONGEST) uval; | |
12404 | return 1; | |
12405 | } | |
12406 | } | |
12407 | return 0; | |
12408 | } | |
12409 | ||
00bf0b85 | 12410 | static int |
dc3decaf | 12411 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12412 | { |
12413 | struct remote_state *rs = get_remote_state (); | |
12414 | char *p, *reply; | |
12415 | ||
12416 | p = rs->buf; | |
12417 | strcpy (p, "QTSave:"); | |
12418 | p += strlen (p); | |
12419 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12420 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12421 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12422 | *p++ = '\0'; |
12423 | putpkt (rs->buf); | |
ad91cd99 | 12424 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12425 | if (*reply == '\0') |
ad91cd99 PA |
12426 | error (_("Target does not support this command.")); |
12427 | if (strcmp (reply, "OK") != 0) | |
12428 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12429 | return 0; |
12430 | } | |
12431 | ||
12432 | /* This is basically a memory transfer, but needs to be its own packet | |
12433 | because we don't know how the target actually organizes its trace | |
12434 | memory, plus we want to be able to ask for as much as possible, but | |
12435 | not be unhappy if we don't get as much as we ask for. */ | |
12436 | ||
12437 | static LONGEST | |
88ee6f45 TT |
12438 | remote_get_raw_trace_data (struct target_ops *self, |
12439 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12440 | { |
12441 | struct remote_state *rs = get_remote_state (); | |
12442 | char *reply; | |
12443 | char *p; | |
12444 | int rslt; | |
12445 | ||
12446 | p = rs->buf; | |
12447 | strcpy (p, "qTBuffer:"); | |
12448 | p += strlen (p); | |
12449 | p += hexnumstr (p, offset); | |
12450 | *p++ = ','; | |
12451 | p += hexnumstr (p, len); | |
12452 | *p++ = '\0'; | |
12453 | ||
12454 | putpkt (rs->buf); | |
12455 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12456 | if (reply && *reply) | |
12457 | { | |
12458 | /* 'l' by itself means we're at the end of the buffer and | |
12459 | there is nothing more to get. */ | |
12460 | if (*reply == 'l') | |
12461 | return 0; | |
12462 | ||
12463 | /* Convert the reply into binary. Limit the number of bytes to | |
12464 | convert according to our passed-in buffer size, rather than | |
12465 | what was returned in the packet; if the target is | |
12466 | unexpectedly generous and gives us a bigger reply than we | |
12467 | asked for, we don't want to crash. */ | |
12468 | rslt = hex2bin (target_buf, buf, len); | |
12469 | return rslt; | |
12470 | } | |
12471 | ||
12472 | /* Something went wrong, flag as an error. */ | |
12473 | return -1; | |
12474 | } | |
12475 | ||
35b1e5cc | 12476 | static void |
37b25738 | 12477 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12478 | { |
12479 | struct remote_state *rs = get_remote_state (); | |
12480 | ||
4082afcc | 12481 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12482 | { |
ad91cd99 PA |
12483 | char *reply; |
12484 | ||
bba74b36 | 12485 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12486 | putpkt (rs->buf); |
ad91cd99 PA |
12487 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12488 | if (*reply == '\0') | |
33da3f1c | 12489 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12490 | if (strcmp (reply, "OK") != 0) |
12491 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12492 | } |
12493 | else if (val) | |
12494 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12495 | } |
12496 | ||
dc146f7c VP |
12497 | static int |
12498 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12499 | { | |
12500 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12501 | |
fe978cb0 PA |
12502 | if (info && info->priv) |
12503 | return info->priv->core; | |
dc146f7c VP |
12504 | return -1; |
12505 | } | |
12506 | ||
4daf5ac0 | 12507 | static void |
736d5b1f | 12508 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12509 | { |
12510 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12511 | char *reply; |
4daf5ac0 | 12512 | |
bba74b36 | 12513 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12514 | putpkt (rs->buf); |
ad91cd99 PA |
12515 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12516 | if (*reply == '\0') | |
4daf5ac0 | 12517 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12518 | if (strcmp (reply, "OK") != 0) |
12519 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12520 | } |
12521 | ||
b3b9301e | 12522 | static struct traceframe_info * |
a893e81f | 12523 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12524 | { |
12525 | char *text; | |
12526 | ||
12527 | text = target_read_stralloc (¤t_target, | |
12528 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12529 | if (text != NULL) | |
12530 | { | |
12531 | struct traceframe_info *info; | |
12532 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12533 | ||
12534 | info = parse_traceframe_info (text); | |
12535 | do_cleanups (back_to); | |
12536 | return info; | |
12537 | } | |
12538 | ||
12539 | return NULL; | |
12540 | } | |
12541 | ||
405f8e94 SS |
12542 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12543 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12544 | if the packet is not supported, and 0 if the minimum instruction | |
12545 | length is unknown. */ | |
12546 | ||
12547 | static int | |
0e67620a | 12548 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12549 | { |
12550 | struct remote_state *rs = get_remote_state (); | |
12551 | char *reply; | |
12552 | ||
e886a173 PA |
12553 | /* If we're not debugging a process yet, the IPA can't be |
12554 | loaded. */ | |
12555 | if (!target_has_execution) | |
12556 | return 0; | |
12557 | ||
12558 | /* Make sure the remote is pointing at the right process. */ | |
12559 | set_general_process (); | |
12560 | ||
bba74b36 | 12561 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12562 | putpkt (rs->buf); |
12563 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12564 | if (*reply == '\0') | |
12565 | return -1; | |
12566 | else | |
12567 | { | |
12568 | ULONGEST min_insn_len; | |
12569 | ||
12570 | unpack_varlen_hex (reply, &min_insn_len); | |
12571 | ||
12572 | return (int) min_insn_len; | |
12573 | } | |
12574 | } | |
12575 | ||
f6f899bf | 12576 | static void |
4da384be | 12577 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12578 | { |
4082afcc | 12579 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12580 | { |
12581 | struct remote_state *rs = get_remote_state (); | |
12582 | char *buf = rs->buf; | |
12583 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12584 | enum packet_result result; | |
12585 | ||
12586 | gdb_assert (val >= 0 || val == -1); | |
12587 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12588 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12589 | if (val < 0) | |
12590 | { | |
12591 | *buf++ = '-'; | |
12592 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12593 | } | |
12594 | else | |
12595 | buf += hexnumstr (buf, (ULONGEST) val); | |
12596 | ||
12597 | putpkt (rs->buf); | |
12598 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12599 | result = packet_ok (rs->buf, | |
12600 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12601 | ||
12602 | if (result != PACKET_OK) | |
12603 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12604 | } | |
12605 | } | |
12606 | ||
f196051f | 12607 | static int |
d9e68a2c TT |
12608 | remote_set_trace_notes (struct target_ops *self, |
12609 | const char *user, const char *notes, | |
ca623f82 | 12610 | const char *stop_notes) |
f196051f SS |
12611 | { |
12612 | struct remote_state *rs = get_remote_state (); | |
12613 | char *reply; | |
12614 | char *buf = rs->buf; | |
12615 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12616 | int nbytes; | |
12617 | ||
12618 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12619 | if (user) | |
12620 | { | |
12621 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12622 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12623 | buf += 2 * nbytes; |
12624 | *buf++ = ';'; | |
12625 | } | |
12626 | if (notes) | |
12627 | { | |
12628 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12629 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12630 | buf += 2 * nbytes; |
12631 | *buf++ = ';'; | |
12632 | } | |
12633 | if (stop_notes) | |
12634 | { | |
12635 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12636 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12637 | buf += 2 * nbytes; |
12638 | *buf++ = ';'; | |
12639 | } | |
12640 | /* Ensure the buffer is terminated. */ | |
12641 | *buf = '\0'; | |
12642 | ||
12643 | putpkt (rs->buf); | |
12644 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12645 | if (*reply == '\0') | |
12646 | return 0; | |
12647 | ||
12648 | if (strcmp (reply, "OK") != 0) | |
12649 | error (_("Bogus reply from target: %s"), reply); | |
12650 | ||
12651 | return 1; | |
12652 | } | |
12653 | ||
d1feda86 | 12654 | static int |
2c152180 | 12655 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12656 | { |
4082afcc | 12657 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12658 | { |
12659 | struct remote_state *rs = get_remote_state (); | |
12660 | ||
12661 | /* If the stub supports QAgent. */ | |
bba74b36 | 12662 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12663 | putpkt (rs->buf); |
12664 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12665 | ||
12666 | if (strcmp (rs->buf, "OK") == 0) | |
12667 | { | |
12668 | use_agent = use; | |
12669 | return 1; | |
12670 | } | |
12671 | } | |
12672 | ||
12673 | return 0; | |
12674 | } | |
12675 | ||
12676 | static int | |
fe38f897 | 12677 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12678 | { |
4082afcc | 12679 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12680 | } |
12681 | ||
9accd112 MM |
12682 | struct btrace_target_info |
12683 | { | |
12684 | /* The ptid of the traced thread. */ | |
12685 | ptid_t ptid; | |
f4abbc16 MM |
12686 | |
12687 | /* The obtained branch trace configuration. */ | |
12688 | struct btrace_config conf; | |
9accd112 MM |
12689 | }; |
12690 | ||
f4abbc16 MM |
12691 | /* Reset our idea of our target's btrace configuration. */ |
12692 | ||
12693 | static void | |
12694 | remote_btrace_reset (void) | |
12695 | { | |
12696 | struct remote_state *rs = get_remote_state (); | |
12697 | ||
12698 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12699 | } | |
12700 | ||
9accd112 MM |
12701 | /* Check whether the target supports branch tracing. */ |
12702 | ||
12703 | static int | |
043c3577 | 12704 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12705 | { |
4082afcc | 12706 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12707 | return 0; |
4082afcc | 12708 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12709 | return 0; |
12710 | ||
043c3577 MM |
12711 | switch (format) |
12712 | { | |
12713 | case BTRACE_FORMAT_NONE: | |
12714 | return 0; | |
12715 | ||
12716 | case BTRACE_FORMAT_BTS: | |
12717 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12718 | |
12719 | case BTRACE_FORMAT_PT: | |
12720 | /* The trace is decoded on the host. Even if our target supports it, | |
12721 | we still need to have libipt to decode the trace. */ | |
12722 | #if defined (HAVE_LIBIPT) | |
12723 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12724 | #else /* !defined (HAVE_LIBIPT) */ | |
12725 | return 0; | |
12726 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12727 | } |
12728 | ||
12729 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12730 | } |
12731 | ||
f4abbc16 MM |
12732 | /* Synchronize the configuration with the target. */ |
12733 | ||
12734 | static void | |
12735 | btrace_sync_conf (const struct btrace_config *conf) | |
12736 | { | |
d33501a5 MM |
12737 | struct packet_config *packet; |
12738 | struct remote_state *rs; | |
12739 | char *buf, *pos, *endbuf; | |
12740 | ||
12741 | rs = get_remote_state (); | |
12742 | buf = rs->buf; | |
12743 | endbuf = buf + get_remote_packet_size (); | |
12744 | ||
12745 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12746 | if (packet_config_support (packet) == PACKET_ENABLE | |
12747 | && conf->bts.size != rs->btrace_config.bts.size) | |
12748 | { | |
12749 | pos = buf; | |
12750 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12751 | conf->bts.size); | |
12752 | ||
12753 | putpkt (buf); | |
12754 | getpkt (&buf, &rs->buf_size, 0); | |
12755 | ||
12756 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12757 | { | |
12758 | if (buf[0] == 'E' && buf[1] == '.') | |
12759 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12760 | else | |
12761 | error (_("Failed to configure the BTS buffer size.")); | |
12762 | } | |
12763 | ||
12764 | rs->btrace_config.bts.size = conf->bts.size; | |
12765 | } | |
b20a6524 MM |
12766 | |
12767 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12768 | if (packet_config_support (packet) == PACKET_ENABLE | |
12769 | && conf->pt.size != rs->btrace_config.pt.size) | |
12770 | { | |
12771 | pos = buf; | |
12772 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12773 | conf->pt.size); | |
12774 | ||
12775 | putpkt (buf); | |
12776 | getpkt (&buf, &rs->buf_size, 0); | |
12777 | ||
12778 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12779 | { | |
12780 | if (buf[0] == 'E' && buf[1] == '.') | |
12781 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12782 | else | |
12783 | error (_("Failed to configure the trace buffer size.")); | |
12784 | } | |
12785 | ||
12786 | rs->btrace_config.pt.size = conf->pt.size; | |
12787 | } | |
f4abbc16 MM |
12788 | } |
12789 | ||
12790 | /* Read the current thread's btrace configuration from the target and | |
12791 | store it into CONF. */ | |
12792 | ||
12793 | static void | |
12794 | btrace_read_config (struct btrace_config *conf) | |
12795 | { | |
12796 | char *xml; | |
12797 | ||
12798 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12799 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12800 | if (xml != NULL) |
12801 | { | |
12802 | struct cleanup *cleanup; | |
12803 | ||
12804 | cleanup = make_cleanup (xfree, xml); | |
12805 | parse_xml_btrace_conf (conf, xml); | |
12806 | do_cleanups (cleanup); | |
12807 | } | |
12808 | } | |
12809 | ||
9accd112 MM |
12810 | /* Enable branch tracing. */ |
12811 | ||
12812 | static struct btrace_target_info * | |
f4abbc16 MM |
12813 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12814 | const struct btrace_config *conf) | |
9accd112 MM |
12815 | { |
12816 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12817 | struct packet_config *packet = NULL; |
9accd112 MM |
12818 | struct remote_state *rs = get_remote_state (); |
12819 | char *buf = rs->buf; | |
12820 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12821 | ||
b20a6524 MM |
12822 | switch (conf->format) |
12823 | { | |
12824 | case BTRACE_FORMAT_BTS: | |
12825 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12826 | break; | |
12827 | ||
12828 | case BTRACE_FORMAT_PT: | |
12829 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12830 | break; | |
12831 | } | |
12832 | ||
12833 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12834 | error (_("Target does not support branch tracing.")); |
12835 | ||
f4abbc16 MM |
12836 | btrace_sync_conf (conf); |
12837 | ||
9accd112 MM |
12838 | set_general_thread (ptid); |
12839 | ||
12840 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12841 | putpkt (rs->buf); | |
12842 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12843 | ||
12844 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12845 | { | |
12846 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12847 | error (_("Could not enable branch tracing for %s: %s"), | |
12848 | target_pid_to_str (ptid), rs->buf + 2); | |
12849 | else | |
12850 | error (_("Could not enable branch tracing for %s."), | |
12851 | target_pid_to_str (ptid)); | |
12852 | } | |
12853 | ||
8d749320 | 12854 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12855 | tinfo->ptid = ptid; |
12856 | ||
f4abbc16 MM |
12857 | /* If we fail to read the configuration, we lose some information, but the |
12858 | tracing itself is not impacted. */ | |
492d29ea PA |
12859 | TRY |
12860 | { | |
12861 | btrace_read_config (&tinfo->conf); | |
12862 | } | |
12863 | CATCH (err, RETURN_MASK_ERROR) | |
12864 | { | |
12865 | if (err.message != NULL) | |
12866 | warning ("%s", err.message); | |
12867 | } | |
12868 | END_CATCH | |
f4abbc16 | 12869 | |
9accd112 MM |
12870 | return tinfo; |
12871 | } | |
12872 | ||
12873 | /* Disable branch tracing. */ | |
12874 | ||
12875 | static void | |
25e95349 TT |
12876 | remote_disable_btrace (struct target_ops *self, |
12877 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12878 | { |
12879 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12880 | struct remote_state *rs = get_remote_state (); | |
12881 | char *buf = rs->buf; | |
12882 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12883 | ||
4082afcc | 12884 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12885 | error (_("Target does not support branch tracing.")); |
12886 | ||
12887 | set_general_thread (tinfo->ptid); | |
12888 | ||
12889 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12890 | putpkt (rs->buf); | |
12891 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12892 | ||
12893 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12894 | { | |
12895 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12896 | error (_("Could not disable branch tracing for %s: %s"), | |
12897 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12898 | else | |
12899 | error (_("Could not disable branch tracing for %s."), | |
12900 | target_pid_to_str (tinfo->ptid)); | |
12901 | } | |
12902 | ||
12903 | xfree (tinfo); | |
12904 | } | |
12905 | ||
12906 | /* Teardown branch tracing. */ | |
12907 | ||
12908 | static void | |
1777056d TT |
12909 | remote_teardown_btrace (struct target_ops *self, |
12910 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12911 | { |
12912 | /* We must not talk to the target during teardown. */ | |
12913 | xfree (tinfo); | |
12914 | } | |
12915 | ||
12916 | /* Read the branch trace. */ | |
12917 | ||
969c39fb | 12918 | static enum btrace_error |
39c49f83 | 12919 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12920 | struct btrace_data *btrace, |
969c39fb | 12921 | struct btrace_target_info *tinfo, |
9accd112 MM |
12922 | enum btrace_read_type type) |
12923 | { | |
12924 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12925 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12926 | struct cleanup *cleanup; |
9accd112 MM |
12927 | const char *annex; |
12928 | char *xml; | |
12929 | ||
4082afcc | 12930 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12931 | error (_("Target does not support branch tracing.")); |
12932 | ||
12933 | #if !defined(HAVE_LIBEXPAT) | |
12934 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12935 | #endif | |
12936 | ||
12937 | switch (type) | |
12938 | { | |
864089d2 | 12939 | case BTRACE_READ_ALL: |
9accd112 MM |
12940 | annex = "all"; |
12941 | break; | |
864089d2 | 12942 | case BTRACE_READ_NEW: |
9accd112 MM |
12943 | annex = "new"; |
12944 | break; | |
969c39fb MM |
12945 | case BTRACE_READ_DELTA: |
12946 | annex = "delta"; | |
12947 | break; | |
9accd112 MM |
12948 | default: |
12949 | internal_error (__FILE__, __LINE__, | |
12950 | _("Bad branch tracing read type: %u."), | |
12951 | (unsigned int) type); | |
12952 | } | |
12953 | ||
12954 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12955 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12956 | if (xml == NULL) |
12957 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12958 | |
969c39fb | 12959 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12960 | parse_xml_btrace (btrace, xml); |
969c39fb | 12961 | do_cleanups (cleanup); |
9accd112 | 12962 | |
969c39fb | 12963 | return BTRACE_ERR_NONE; |
9accd112 MM |
12964 | } |
12965 | ||
f4abbc16 MM |
12966 | static const struct btrace_config * |
12967 | remote_btrace_conf (struct target_ops *self, | |
12968 | const struct btrace_target_info *tinfo) | |
12969 | { | |
12970 | return &tinfo->conf; | |
12971 | } | |
12972 | ||
ced63ec0 | 12973 | static int |
5436ff03 | 12974 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12975 | { |
4082afcc PA |
12976 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12977 | == PACKET_ENABLE); | |
ced63ec0 GB |
12978 | } |
12979 | ||
9dd130a0 TT |
12980 | /* Implementation of to_load. */ |
12981 | ||
12982 | static void | |
9cbe5fff | 12983 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12984 | { |
12985 | generic_load (name, from_tty); | |
12986 | } | |
12987 | ||
c78fa86a GB |
12988 | /* Accepts an integer PID; returns a string representing a file that |
12989 | can be opened on the remote side to get the symbols for the child | |
12990 | process. Returns NULL if the operation is not supported. */ | |
12991 | ||
12992 | static char * | |
12993 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12994 | { | |
12995 | static char *filename = NULL; | |
835205d0 GB |
12996 | struct inferior *inf; |
12997 | char *annex = NULL; | |
c78fa86a GB |
12998 | |
12999 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13000 | return NULL; | |
13001 | ||
13002 | if (filename != NULL) | |
13003 | xfree (filename); | |
13004 | ||
835205d0 GB |
13005 | inf = find_inferior_pid (pid); |
13006 | if (inf == NULL) | |
13007 | internal_error (__FILE__, __LINE__, | |
13008 | _("not currently attached to process %d"), pid); | |
13009 | ||
13010 | if (!inf->fake_pid_p) | |
13011 | { | |
13012 | const int annex_size = 9; | |
13013 | ||
224c3ddb | 13014 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13015 | xsnprintf (annex, annex_size, "%x", pid); |
13016 | } | |
13017 | ||
c78fa86a GB |
13018 | filename = target_read_stralloc (¤t_target, |
13019 | TARGET_OBJECT_EXEC_FILE, annex); | |
13020 | ||
13021 | return filename; | |
13022 | } | |
13023 | ||
750ce8d1 YQ |
13024 | /* Implement the to_can_do_single_step target_ops method. */ |
13025 | ||
13026 | static int | |
13027 | remote_can_do_single_step (struct target_ops *ops) | |
13028 | { | |
13029 | /* We can only tell whether target supports single step or not by | |
13030 | supported s and S vCont actions if the stub supports vContSupported | |
13031 | feature. If the stub doesn't support vContSupported feature, | |
13032 | we have conservatively to think target doesn't supports single | |
13033 | step. */ | |
13034 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13035 | { | |
13036 | struct remote_state *rs = get_remote_state (); | |
13037 | ||
13038 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
13039 | remote_vcont_probe (rs); | |
13040 | ||
13041 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13042 | } | |
13043 | else | |
13044 | return 0; | |
13045 | } | |
13046 | ||
c906108c | 13047 | static void |
fba45db2 | 13048 | init_remote_ops (void) |
c906108c | 13049 | { |
c5aa993b | 13050 | remote_ops.to_shortname = "remote"; |
c906108c | 13051 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 13052 | remote_ops.to_doc = |
c906108c | 13053 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
13054 | Specify the serial device it is connected to\n\ |
13055 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
13056 | remote_ops.to_open = remote_open; |
13057 | remote_ops.to_close = remote_close; | |
c906108c | 13058 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 13059 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 13060 | remote_ops.to_resume = remote_resume; |
c906108c SS |
13061 | remote_ops.to_wait = remote_wait; |
13062 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
13063 | remote_ops.to_store_registers = remote_store_registers; | |
13064 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 13065 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
13066 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
13067 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
13068 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
13069 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
13070 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
13071 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
13072 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
13073 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
13074 | remote_ops.to_watchpoint_addr_within_range = |
13075 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
13076 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
13077 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
13078 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
13079 | remote_ops.to_region_ok_for_hw_watchpoint |
13080 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
13081 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
13082 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 13083 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 13084 | remote_ops.to_load = remote_load; |
c906108c | 13085 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 13086 | remote_ops.to_pass_signals = remote_pass_signals; |
82075af2 | 13087 | remote_ops.to_set_syscall_catchpoint = remote_set_syscall_catchpoint; |
9b224c5e | 13088 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 13089 | remote_ops.to_thread_alive = remote_thread_alive; |
79efa585 | 13090 | remote_ops.to_thread_name = remote_thread_name; |
e8032dde | 13091 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 13092 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 13093 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 13094 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 13095 | remote_ops.to_stop = remote_stop; |
bfedc46a | 13096 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 13097 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 13098 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 13099 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 13100 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 13101 | remote_ops.to_log_command = serial_log_command; |
38691318 | 13102 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 13103 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
13104 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
13105 | remote_ops.to_has_memory = default_child_has_memory; | |
13106 | remote_ops.to_has_stack = default_child_has_stack; | |
13107 | remote_ops.to_has_registers = default_child_has_registers; | |
13108 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 13109 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 13110 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 13111 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 13112 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
13113 | remote_ops.to_flash_erase = remote_flash_erase; |
13114 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 13115 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 13116 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
13117 | remote_ops.to_can_async_p = remote_can_async_p; |
13118 | remote_ops.to_is_async_p = remote_is_async_p; | |
13119 | remote_ops.to_async = remote_async; | |
65706a29 | 13120 | remote_ops.to_thread_events = remote_thread_events; |
750ce8d1 | 13121 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
13122 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
13123 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 13124 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 13125 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
13126 | remote_ops.to_supports_disable_randomization |
13127 | = remote_supports_disable_randomization; | |
4bd7dc42 | 13128 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
13129 | remote_ops.to_fileio_open = remote_hostio_open; |
13130 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
13131 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 13132 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
13133 | remote_ops.to_fileio_close = remote_hostio_close; |
13134 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 13135 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 13136 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 13137 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 13138 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 13139 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
13140 | remote_ops.to_trace_init = remote_trace_init; |
13141 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 13142 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
13143 | remote_ops.to_download_trace_state_variable |
13144 | = remote_download_trace_state_variable; | |
d248b706 KY |
13145 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
13146 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
13147 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
13148 | remote_ops.to_trace_start = remote_trace_start; | |
13149 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 13150 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
13151 | remote_ops.to_trace_stop = remote_trace_stop; |
13152 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
13153 | remote_ops.to_get_trace_state_variable_value |
13154 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
13155 | remote_ops.to_save_trace_data = remote_save_trace_data; |
13156 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
13157 | remote_ops.to_upload_trace_state_variables |
13158 | = remote_upload_trace_state_variables; | |
00bf0b85 | 13159 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 13160 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 13161 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 13162 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 13163 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 13164 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 13165 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 13166 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 13167 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 13168 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
13169 | remote_ops.to_static_tracepoint_marker_at |
13170 | = remote_static_tracepoint_marker_at; | |
13171 | remote_ops.to_static_tracepoint_markers_by_strid | |
13172 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 13173 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
13174 | remote_ops.to_use_agent = remote_use_agent; |
13175 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
13176 | remote_ops.to_supports_btrace = remote_supports_btrace; |
13177 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
13178 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
13179 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
13180 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 13181 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
13182 | remote_ops.to_augmented_libraries_svr4_read = |
13183 | remote_augmented_libraries_svr4_read; | |
8020350c DB |
13184 | remote_ops.to_follow_fork = remote_follow_fork; |
13185 | remote_ops.to_follow_exec = remote_follow_exec; | |
13186 | remote_ops.to_insert_fork_catchpoint = remote_insert_fork_catchpoint; | |
13187 | remote_ops.to_remove_fork_catchpoint = remote_remove_fork_catchpoint; | |
13188 | remote_ops.to_insert_vfork_catchpoint = remote_insert_vfork_catchpoint; | |
13189 | remote_ops.to_remove_vfork_catchpoint = remote_remove_vfork_catchpoint; | |
13190 | remote_ops.to_insert_exec_catchpoint = remote_insert_exec_catchpoint; | |
13191 | remote_ops.to_remove_exec_catchpoint = remote_remove_exec_catchpoint; | |
c906108c SS |
13192 | } |
13193 | ||
13194 | /* Set up the extended remote vector by making a copy of the standard | |
13195 | remote vector and adding to it. */ | |
13196 | ||
13197 | static void | |
fba45db2 | 13198 | init_extended_remote_ops (void) |
c906108c SS |
13199 | { |
13200 | extended_remote_ops = remote_ops; | |
13201 | ||
0f71a2f6 | 13202 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 13203 | extended_remote_ops.to_longname = |
c906108c | 13204 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 13205 | extended_remote_ops.to_doc = |
c906108c | 13206 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
13207 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
13208 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c | 13209 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
2d717e4f DJ |
13210 | extended_remote_ops.to_detach = extended_remote_detach; |
13211 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 13212 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
03583c20 UW |
13213 | extended_remote_ops.to_supports_disable_randomization |
13214 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
13215 | } |
13216 | ||
6426a772 | 13217 | static int |
6a109b6b | 13218 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 13219 | { |
5d93a237 TT |
13220 | struct remote_state *rs = get_remote_state (); |
13221 | ||
c6ebd6cf | 13222 | if (!target_async_permitted) |
75c99385 PA |
13223 | /* We only enable async when the user specifically asks for it. */ |
13224 | return 0; | |
13225 | ||
23860348 | 13226 | /* We're async whenever the serial device is. */ |
5d93a237 | 13227 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
13228 | } |
13229 | ||
13230 | static int | |
6a109b6b | 13231 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 13232 | { |
5d93a237 TT |
13233 | struct remote_state *rs = get_remote_state (); |
13234 | ||
c6ebd6cf | 13235 | if (!target_async_permitted) |
75c99385 PA |
13236 | /* We only enable async when the user specifically asks for it. */ |
13237 | return 0; | |
13238 | ||
23860348 | 13239 | /* We're async whenever the serial device is. */ |
5d93a237 | 13240 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
13241 | } |
13242 | ||
2acceee2 JM |
13243 | /* Pass the SERIAL event on and up to the client. One day this code |
13244 | will be able to delay notifying the client of an event until the | |
23860348 | 13245 | point where an entire packet has been received. */ |
2acceee2 | 13246 | |
2acceee2 JM |
13247 | static serial_event_ftype remote_async_serial_handler; |
13248 | ||
6426a772 | 13249 | static void |
819cc324 | 13250 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 13251 | { |
19ba03f4 | 13252 | struct remote_state *rs = (struct remote_state *) context; |
88b496c3 | 13253 | |
2acceee2 JM |
13254 | /* Don't propogate error information up to the client. Instead let |
13255 | the client find out about the error by querying the target. */ | |
6a3753b3 | 13256 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
13257 | } |
13258 | ||
74531fed PA |
13259 | static void |
13260 | remote_async_inferior_event_handler (gdb_client_data data) | |
13261 | { | |
13262 | inferior_event_handler (INF_REG_EVENT, NULL); | |
13263 | } | |
13264 | ||
2acceee2 | 13265 | static void |
6a3753b3 | 13266 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 13267 | { |
5d93a237 TT |
13268 | struct remote_state *rs = get_remote_state (); |
13269 | ||
6a3753b3 | 13270 | if (enable) |
2acceee2 | 13271 | { |
88b496c3 | 13272 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
13273 | |
13274 | /* If there are pending events in the stop reply queue tell the | |
13275 | event loop to process them. */ | |
13276 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
13277 | mark_async_event_handler (remote_async_inferior_event_token); | |
6efcd9a8 PA |
13278 | /* For simplicity, below we clear the pending events token |
13279 | without remembering whether it is marked, so here we always | |
13280 | mark it. If there's actually no pending notification to | |
13281 | process, this ends up being a no-op (other than a spurious | |
13282 | event-loop wakeup). */ | |
13283 | if (target_is_non_stop_p ()) | |
13284 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
13285 | } |
13286 | else | |
b7d2e916 PA |
13287 | { |
13288 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
13289 | /* If the core is disabling async, it doesn't want to be |
13290 | disturbed with target events. Clear all async event sources | |
13291 | too. */ | |
b7d2e916 | 13292 | clear_async_event_handler (remote_async_inferior_event_token); |
6efcd9a8 PA |
13293 | if (target_is_non_stop_p ()) |
13294 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 13295 | } |
6426a772 JM |
13296 | } |
13297 | ||
65706a29 PA |
13298 | /* Implementation of the to_thread_events method. */ |
13299 | ||
13300 | static void | |
13301 | remote_thread_events (struct target_ops *ops, int enable) | |
13302 | { | |
13303 | struct remote_state *rs = get_remote_state (); | |
13304 | size_t size = get_remote_packet_size (); | |
13305 | char *p = rs->buf; | |
13306 | ||
13307 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
13308 | return; | |
13309 | ||
13310 | xsnprintf (rs->buf, size, "QThreadEvents:%x", enable ? 1 : 0); | |
13311 | putpkt (rs->buf); | |
13312 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13313 | ||
13314 | switch (packet_ok (rs->buf, | |
13315 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
13316 | { | |
13317 | case PACKET_OK: | |
13318 | if (strcmp (rs->buf, "OK") != 0) | |
13319 | error (_("Remote refused setting thread events: %s"), rs->buf); | |
13320 | break; | |
13321 | case PACKET_ERROR: | |
13322 | warning (_("Remote failure reply: %s"), rs->buf); | |
13323 | break; | |
13324 | case PACKET_UNKNOWN: | |
13325 | break; | |
13326 | } | |
13327 | } | |
13328 | ||
5a2468f5 | 13329 | static void |
c2d11a7d | 13330 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 13331 | { |
635c7e8a | 13332 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
13333 | } |
13334 | ||
d471ea57 AC |
13335 | static void |
13336 | show_remote_cmd (char *args, int from_tty) | |
13337 | { | |
37a105a1 | 13338 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 13339 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
13340 | struct cleanup *showlist_chain; |
13341 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 13342 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
13343 | |
13344 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
13345 | for (; list != NULL; list = list->next) | |
13346 | if (strcmp (list->name, "Z-packet") == 0) | |
13347 | continue; | |
427c3a89 DJ |
13348 | else if (list->type == not_set_cmd) |
13349 | /* Alias commands are exactly like the original, except they | |
13350 | don't have the normal type. */ | |
13351 | continue; | |
13352 | else | |
37a105a1 DJ |
13353 | { |
13354 | struct cleanup *option_chain | |
13355 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 13356 | |
37a105a1 DJ |
13357 | ui_out_field_string (uiout, "name", list->name); |
13358 | ui_out_text (uiout, ": "); | |
427c3a89 | 13359 | if (list->type == show_cmd) |
5b9afe8a | 13360 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
13361 | else |
13362 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
13363 | /* Close the tuple. */ |
13364 | do_cleanups (option_chain); | |
13365 | } | |
427c3a89 DJ |
13366 | |
13367 | /* Close the tuple. */ | |
13368 | do_cleanups (showlist_chain); | |
d471ea57 | 13369 | } |
5a2468f5 | 13370 | |
0f71a2f6 | 13371 | |
23860348 | 13372 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
13373 | static void |
13374 | remote_new_objfile (struct objfile *objfile) | |
13375 | { | |
5d93a237 TT |
13376 | struct remote_state *rs = get_remote_state (); |
13377 | ||
13378 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 13379 | remote_check_symbols (); |
dc8acb97 MS |
13380 | } |
13381 | ||
00bf0b85 SS |
13382 | /* Pull all the tracepoints defined on the target and create local |
13383 | data structures representing them. We don't want to create real | |
13384 | tracepoints yet, we don't want to mess up the user's existing | |
13385 | collection. */ | |
13386 | ||
13387 | static int | |
ab6617cc | 13388 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13389 | { |
00bf0b85 SS |
13390 | struct remote_state *rs = get_remote_state (); |
13391 | char *p; | |
d5551862 | 13392 | |
00bf0b85 SS |
13393 | /* Ask for a first packet of tracepoint definition. */ |
13394 | putpkt ("qTfP"); | |
13395 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13396 | p = rs->buf; | |
13397 | while (*p && *p != 'l') | |
d5551862 | 13398 | { |
00bf0b85 SS |
13399 | parse_tracepoint_definition (p, utpp); |
13400 | /* Ask for another packet of tracepoint definition. */ | |
13401 | putpkt ("qTsP"); | |
13402 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13403 | p = rs->buf; | |
d5551862 | 13404 | } |
00bf0b85 | 13405 | return 0; |
d5551862 SS |
13406 | } |
13407 | ||
00bf0b85 | 13408 | static int |
181e3713 TT |
13409 | remote_upload_trace_state_variables (struct target_ops *self, |
13410 | struct uploaded_tsv **utsvp) | |
d5551862 | 13411 | { |
00bf0b85 | 13412 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13413 | char *p; |
d5551862 | 13414 | |
00bf0b85 SS |
13415 | /* Ask for a first packet of variable definition. */ |
13416 | putpkt ("qTfV"); | |
d5551862 SS |
13417 | getpkt (&rs->buf, &rs->buf_size, 0); |
13418 | p = rs->buf; | |
00bf0b85 | 13419 | while (*p && *p != 'l') |
d5551862 | 13420 | { |
00bf0b85 SS |
13421 | parse_tsv_definition (p, utsvp); |
13422 | /* Ask for another packet of variable definition. */ | |
13423 | putpkt ("qTsV"); | |
d5551862 SS |
13424 | getpkt (&rs->buf, &rs->buf_size, 0); |
13425 | p = rs->buf; | |
13426 | } | |
00bf0b85 | 13427 | return 0; |
d5551862 SS |
13428 | } |
13429 | ||
c1e36e3e PA |
13430 | /* The "set/show range-stepping" show hook. */ |
13431 | ||
13432 | static void | |
13433 | show_range_stepping (struct ui_file *file, int from_tty, | |
13434 | struct cmd_list_element *c, | |
13435 | const char *value) | |
13436 | { | |
13437 | fprintf_filtered (file, | |
13438 | _("Debugger's willingness to use range stepping " | |
13439 | "is %s.\n"), value); | |
13440 | } | |
13441 | ||
13442 | /* The "set/show range-stepping" set hook. */ | |
13443 | ||
13444 | static void | |
13445 | set_range_stepping (char *ignore_args, int from_tty, | |
13446 | struct cmd_list_element *c) | |
13447 | { | |
5d93a237 TT |
13448 | struct remote_state *rs = get_remote_state (); |
13449 | ||
c1e36e3e PA |
13450 | /* Whene enabling, check whether range stepping is actually |
13451 | supported by the target, and warn if not. */ | |
13452 | if (use_range_stepping) | |
13453 | { | |
5d93a237 | 13454 | if (rs->remote_desc != NULL) |
c1e36e3e | 13455 | { |
4082afcc | 13456 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13457 | remote_vcont_probe (rs); |
13458 | ||
4082afcc | 13459 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13460 | && rs->supports_vCont.r) |
13461 | return; | |
13462 | } | |
13463 | ||
13464 | warning (_("Range stepping is not supported by the current target")); | |
13465 | } | |
13466 | } | |
13467 | ||
c906108c | 13468 | void |
fba45db2 | 13469 | _initialize_remote (void) |
c906108c | 13470 | { |
ea9c271d | 13471 | struct remote_state *rs; |
9a7071a8 | 13472 | struct cmd_list_element *cmd; |
6f937416 | 13473 | const char *cmd_name; |
ea9c271d | 13474 | |
0f71a2f6 | 13475 | /* architecture specific data */ |
2bc416ba | 13476 | remote_gdbarch_data_handle = |
23860348 | 13477 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13478 | remote_g_packet_data_handle = |
13479 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13480 | |
94585166 DB |
13481 | remote_pspace_data |
13482 | = register_program_space_data_with_cleanup (NULL, | |
13483 | remote_pspace_data_cleanup); | |
13484 | ||
ea9c271d DJ |
13485 | /* Initialize the per-target state. At the moment there is only one |
13486 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13487 | time. */ |
13488 | remote_state = new_remote_state (); | |
ea9c271d | 13489 | |
c906108c SS |
13490 | init_remote_ops (); |
13491 | add_target (&remote_ops); | |
13492 | ||
13493 | init_extended_remote_ops (); | |
13494 | add_target (&extended_remote_ops); | |
cce74817 | 13495 | |
dc8acb97 | 13496 | /* Hook into new objfile notification. */ |
06d3b283 | 13497 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13498 | /* We're no longer interested in notification events of an inferior |
13499 | when it exits. */ | |
13500 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13501 | |
b803fb0f | 13502 | /* Set up signal handlers. */ |
934b9bac | 13503 | async_sigint_remote_token = |
b803fb0f | 13504 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 13505 | async_sigint_remote_twice_token = |
6d549500 | 13506 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 13507 | |
c906108c SS |
13508 | #if 0 |
13509 | init_remote_threadtests (); | |
13510 | #endif | |
13511 | ||
722247f1 | 13512 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13513 | /* set/show remote ... */ |
d471ea57 | 13514 | |
1bedd215 | 13515 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13516 | Remote protocol specific variables\n\ |
13517 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13518 | the packets being used"), |
cff3e48b | 13519 | &remote_set_cmdlist, "set remote ", |
23860348 | 13520 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13521 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13522 | Remote protocol specific variables\n\ |
13523 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13524 | the packets being used"), |
cff3e48b | 13525 | &remote_show_cmdlist, "show remote ", |
23860348 | 13526 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13527 | |
1a966eab AC |
13528 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13529 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13530 | Argument is a single section name (default: all loaded sections).\n\ |
13531 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13532 | &cmdlist); |
13533 | ||
1a966eab AC |
13534 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13535 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13536 | maintenance packet TEXT\n\ |
13537 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13538 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13539 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13540 | terminating `#' character and checksum."), |
c906108c SS |
13541 | &maintenancelist); |
13542 | ||
7915a72c AC |
13543 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13544 | Set whether to send break if interrupted."), _("\ | |
13545 | Show whether to send break if interrupted."), _("\ | |
13546 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13547 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13548 | &setlist, &showlist); |
9a7071a8 JB |
13549 | cmd_name = "remotebreak"; |
13550 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13551 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13552 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13553 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13554 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13555 | ||
13556 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13557 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13558 | _("\ | |
9a7071a8 JB |
13559 | Set interrupt sequence to remote target."), _("\ |
13560 | Show interrupt sequence to remote target."), _("\ | |
13561 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13562 | NULL, show_interrupt_sequence, | |
13563 | &remote_set_cmdlist, | |
13564 | &remote_show_cmdlist); | |
13565 | ||
13566 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13567 | &interrupt_on_connect, _("\ | |
13568 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13569 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13570 | If set, interrupt sequence is sent to remote target."), | |
13571 | NULL, NULL, | |
13572 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13573 | |
23860348 | 13574 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13575 | |
1a966eab AC |
13576 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13577 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13578 | &setlist); |
1a966eab AC |
13579 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13580 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13581 | &showlist); |
13582 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13583 | set_memory_write_packet_size, _("\ |
13584 | Set the maximum number of bytes per memory-write packet.\n\ | |
13585 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13586 | default packet size. The actual limit is further reduced\n\ | |
13587 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13588 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13589 | &remote_set_cmdlist); |
13590 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13591 | set_memory_read_packet_size, _("\ |
13592 | Set the maximum number of bytes per memory-read packet.\n\ | |
13593 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13594 | default packet size. The actual limit is further reduced\n\ | |
13595 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13596 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13597 | &remote_set_cmdlist); |
13598 | add_cmd ("memory-write-packet-size", no_class, | |
13599 | show_memory_write_packet_size, | |
1a966eab | 13600 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13601 | &remote_show_cmdlist); |
13602 | add_cmd ("memory-read-packet-size", no_class, | |
13603 | show_memory_read_packet_size, | |
1a966eab | 13604 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13605 | &remote_show_cmdlist); |
c906108c | 13606 | |
b3f42336 | 13607 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13608 | &remote_hw_watchpoint_limit, _("\ |
13609 | Set the maximum number of target hardware watchpoints."), _("\ | |
13610 | Show the maximum number of target hardware watchpoints."), _("\ | |
13611 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13612 | NULL, NULL, /* FIXME: i18n: The maximum |
13613 | number of target hardware | |
13614 | watchpoints is %s. */ | |
b3f42336 | 13615 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13616 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13617 | &remote_hw_watchpoint_length_limit, _("\ | |
13618 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13619 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13620 | Specify a negative limit for unlimited."), | |
13621 | NULL, NULL, /* FIXME: i18n: The maximum | |
13622 | length (in bytes) of a target | |
13623 | hardware watchpoint is %s. */ | |
13624 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13625 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13626 | &remote_hw_breakpoint_limit, _("\ |
13627 | Set the maximum number of target hardware breakpoints."), _("\ | |
13628 | Show the maximum number of target hardware breakpoints."), _("\ | |
13629 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13630 | NULL, NULL, /* FIXME: i18n: The maximum |
13631 | number of target hardware | |
13632 | breakpoints is %s. */ | |
b3f42336 | 13633 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13634 | |
1b493192 PA |
13635 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13636 | &remote_address_size, _("\ | |
4d28ad1e AC |
13637 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13638 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13639 | NULL, |
13640 | NULL, /* FIXME: i18n: */ | |
13641 | &setlist, &showlist); | |
c906108c | 13642 | |
ca4f7f8b PA |
13643 | init_all_packet_configs (); |
13644 | ||
444abaca | 13645 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13646 | "X", "binary-download", 1); |
0f71a2f6 | 13647 | |
444abaca | 13648 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13649 | "vCont", "verbose-resume", 0); |
506fb367 | 13650 | |
89be2091 DJ |
13651 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13652 | "QPassSignals", "pass-signals", 0); | |
13653 | ||
82075af2 JS |
13654 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
13655 | "QCatchSyscalls", "catch-syscalls", 0); | |
13656 | ||
9b224c5e PA |
13657 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13658 | "QProgramSignals", "program-signals", 0); | |
13659 | ||
444abaca | 13660 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13661 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13662 | |
444abaca | 13663 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13664 | "P", "set-register", 1); |
d471ea57 | 13665 | |
444abaca | 13666 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13667 | "p", "fetch-register", 1); |
b96ec7ac | 13668 | |
444abaca | 13669 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13670 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13671 | |
444abaca | 13672 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13673 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13674 | |
444abaca | 13675 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13676 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13677 | |
444abaca | 13678 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13679 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13680 | |
444abaca | 13681 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13682 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13683 | |
0876f84a DJ |
13684 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13685 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13686 | |
c78fa86a GB |
13687 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13688 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13689 | ||
23181151 DJ |
13690 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13691 | "qXfer:features:read", "target-features", 0); | |
13692 | ||
cfa9d6d9 DJ |
13693 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13694 | "qXfer:libraries:read", "library-info", 0); | |
13695 | ||
2268b414 JK |
13696 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13697 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13698 | ||
fd79ecee DJ |
13699 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13700 | "qXfer:memory-map:read", "memory-map", 0); | |
13701 | ||
0e7f50da UW |
13702 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13703 | "qXfer:spu:read", "read-spu-object", 0); | |
13704 | ||
13705 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13706 | "qXfer:spu:write", "write-spu-object", 0); | |
13707 | ||
07e059b5 VP |
13708 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13709 | "qXfer:osdata:read", "osdata", 0); | |
13710 | ||
dc146f7c VP |
13711 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13712 | "qXfer:threads:read", "threads", 0); | |
13713 | ||
4aa995e1 PA |
13714 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13715 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13716 | ||
13717 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13718 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13719 | ||
b3b9301e PA |
13720 | add_packet_config_cmd |
13721 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13722 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13723 | |
169081d0 TG |
13724 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13725 | "qXfer:uib:read", "unwind-info-block", 0); | |
13726 | ||
444abaca | 13727 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13728 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13729 | 0); |
13730 | ||
711e434b PM |
13731 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13732 | "qGetTIBAddr", "get-thread-information-block-address", | |
13733 | 0); | |
13734 | ||
40ab02ce MS |
13735 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13736 | "bc", "reverse-continue", 0); | |
13737 | ||
13738 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13739 | "bs", "reverse-step", 0); | |
13740 | ||
be2a5f71 DJ |
13741 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13742 | "qSupported", "supported-packets", 0); | |
13743 | ||
08388c79 DE |
13744 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13745 | "qSearch:memory", "search-memory", 0); | |
13746 | ||
bd3eecc3 PA |
13747 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13748 | "qTStatus", "trace-status", 0); | |
13749 | ||
15a201c8 GB |
13750 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13751 | "vFile:setfs", "hostio-setfs", 0); | |
13752 | ||
a6b151f1 DJ |
13753 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13754 | "vFile:open", "hostio-open", 0); | |
13755 | ||
13756 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13757 | "vFile:pread", "hostio-pread", 0); | |
13758 | ||
13759 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13760 | "vFile:pwrite", "hostio-pwrite", 0); | |
13761 | ||
13762 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13763 | "vFile:close", "hostio-close", 0); | |
13764 | ||
13765 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13766 | "vFile:unlink", "hostio-unlink", 0); | |
13767 | ||
b9e7b9c3 UW |
13768 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13769 | "vFile:readlink", "hostio-readlink", 0); | |
13770 | ||
0a93529c GB |
13771 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13772 | "vFile:fstat", "hostio-fstat", 0); | |
13773 | ||
2d717e4f DJ |
13774 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13775 | "vAttach", "attach", 0); | |
13776 | ||
13777 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13778 | "vRun", "run", 0); | |
13779 | ||
a6f3e723 SL |
13780 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13781 | "QStartNoAckMode", "noack", 0); | |
13782 | ||
82f73884 PA |
13783 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13784 | "vKill", "kill", 0); | |
13785 | ||
0b16c5cf PA |
13786 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13787 | "qAttached", "query-attached", 0); | |
13788 | ||
782b2b07 | 13789 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13790 | "ConditionalTracepoints", |
13791 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13792 | |
13793 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13794 | "ConditionalBreakpoints", | |
13795 | "conditional-breakpoints", 0); | |
13796 | ||
d3ce09f5 SS |
13797 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13798 | "BreakpointCommands", | |
13799 | "breakpoint-commands", 0); | |
13800 | ||
7a697b8d SS |
13801 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13802 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13803 | |
409873ef SS |
13804 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13805 | "TracepointSource", "TracepointSource", 0); | |
13806 | ||
d914c394 SS |
13807 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13808 | "QAllow", "allow", 0); | |
13809 | ||
0fb4aa4b PA |
13810 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13811 | "StaticTracepoints", "static-tracepoints", 0); | |
13812 | ||
1e4d1764 YQ |
13813 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13814 | "InstallInTrace", "install-in-trace", 0); | |
13815 | ||
0fb4aa4b PA |
13816 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13817 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13818 | ||
78d85199 YQ |
13819 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13820 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13821 | ||
03583c20 UW |
13822 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13823 | "QDisableRandomization", "disable-randomization", 0); | |
13824 | ||
d1feda86 YQ |
13825 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13826 | "QAgent", "agent", 0); | |
13827 | ||
f6f899bf HAQ |
13828 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13829 | "QTBuffer:size", "trace-buffer-size", 0); | |
13830 | ||
9accd112 MM |
13831 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13832 | "Qbtrace:off", "disable-btrace", 0); | |
13833 | ||
13834 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13835 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13836 | ||
13837 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13838 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13839 | |
13840 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13841 | "qXfer:btrace", "read-btrace", 0); | |
13842 | ||
f4abbc16 MM |
13843 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13844 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13845 | ||
d33501a5 MM |
13846 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13847 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13848 | ||
73b8c1fd PA |
13849 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13850 | "multiprocess-feature", "multiprocess-feature", 0); | |
13851 | ||
f7e6eed5 PA |
13852 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13853 | "swbreak-feature", "swbreak-feature", 0); | |
13854 | ||
13855 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13856 | "hwbreak-feature", "hwbreak-feature", 0); | |
13857 | ||
89245bc0 DB |
13858 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13859 | "fork-event-feature", "fork-event-feature", 0); | |
13860 | ||
13861 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13862 | "vfork-event-feature", "vfork-event-feature", 0); | |
13863 | ||
b20a6524 MM |
13864 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13865 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13866 | ||
750ce8d1 YQ |
13867 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
13868 | "vContSupported", "verbose-resume-supported", 0); | |
13869 | ||
94585166 DB |
13870 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13871 | "exec-event-feature", "exec-event-feature", 0); | |
13872 | ||
de979965 PA |
13873 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
13874 | "vCtrlC", "ctrl-c", 0); | |
13875 | ||
65706a29 PA |
13876 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
13877 | "QThreadEvents", "thread-events", 0); | |
13878 | ||
f2faf941 PA |
13879 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
13880 | "N stop reply", "no-resumed-stop-reply", 0); | |
13881 | ||
0b736949 DB |
13882 | /* Assert that we've registered "set remote foo-packet" commands |
13883 | for all packet configs. */ | |
ca4f7f8b PA |
13884 | { |
13885 | int i; | |
13886 | ||
13887 | for (i = 0; i < PACKET_MAX; i++) | |
13888 | { | |
13889 | /* Ideally all configs would have a command associated. Some | |
13890 | still don't though. */ | |
13891 | int excepted; | |
13892 | ||
13893 | switch (i) | |
13894 | { | |
13895 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13896 | case PACKET_EnableDisableTracepoints_feature: |
13897 | case PACKET_tracenz_feature: | |
13898 | case PACKET_DisconnectedTracing_feature: | |
13899 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13900 | case PACKET_qCRC: |
13901 | /* Additions to this list need to be well justified: | |
13902 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13903 | excepted = 1; |
13904 | break; | |
13905 | default: | |
13906 | excepted = 0; | |
13907 | break; | |
13908 | } | |
13909 | ||
13910 | /* This catches both forgetting to add a config command, and | |
13911 | forgetting to remove a packet from the exception list. */ | |
13912 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13913 | } | |
13914 | } | |
13915 | ||
37a105a1 DJ |
13916 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13917 | Z sub-packet has its own set and show commands, but users may | |
13918 | have sets to this variable in their .gdbinit files (or in their | |
13919 | documentation). */ | |
e9e68a56 | 13920 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13921 | &remote_Z_packet_detect, _("\ |
13922 | Set use of remote protocol `Z' packets"), _("\ | |
13923 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13924 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13925 | packets."), |
e9e68a56 | 13926 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13927 | show_remote_protocol_Z_packet_cmd, |
13928 | /* FIXME: i18n: Use of remote protocol | |
13929 | `Z' packets is %s. */ | |
e9e68a56 | 13930 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13931 | |
a6b151f1 DJ |
13932 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13933 | Manipulate files on the remote system\n\ | |
13934 | Transfer files to and from the remote target system."), | |
13935 | &remote_cmdlist, "remote ", | |
13936 | 0 /* allow-unknown */, &cmdlist); | |
13937 | ||
13938 | add_cmd ("put", class_files, remote_put_command, | |
13939 | _("Copy a local file to the remote system."), | |
13940 | &remote_cmdlist); | |
13941 | ||
13942 | add_cmd ("get", class_files, remote_get_command, | |
13943 | _("Copy a remote file to the local system."), | |
13944 | &remote_cmdlist); | |
13945 | ||
13946 | add_cmd ("delete", class_files, remote_delete_command, | |
13947 | _("Delete a remote file."), | |
13948 | &remote_cmdlist); | |
13949 | ||
2d717e4f | 13950 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13951 | &remote_exec_file_var, _("\ |
2d717e4f | 13952 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13953 | Show the remote pathname for \"run\""), NULL, |
13954 | set_remote_exec_file, | |
13955 | show_remote_exec_file, | |
13956 | &remote_set_cmdlist, | |
13957 | &remote_show_cmdlist); | |
2d717e4f | 13958 | |
c1e36e3e PA |
13959 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13960 | &use_range_stepping, _("\ | |
13961 | Enable or disable range stepping."), _("\ | |
13962 | Show whether target-assisted range stepping is enabled."), _("\ | |
13963 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13964 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13965 | of issuing multiple single-steps. This speeds up source level\n\ | |
13966 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13967 | stepping is supported by the target. The default is on."), | |
13968 | set_range_stepping, | |
13969 | show_range_stepping, | |
13970 | &setlist, | |
13971 | &showlist); | |
13972 | ||
449092f6 CV |
13973 | /* Eventually initialize fileio. See fileio.c */ |
13974 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13975 | |
ba348170 | 13976 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13977 | special ptids with it set to != 0. */ |
ba348170 PA |
13978 | magic_null_ptid = ptid_build (42000, -1, 1); |
13979 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13980 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13981 | |
13982 | target_buf_size = 2048; | |
224c3ddb | 13983 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 13984 | } |
10760264 | 13985 |