Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
438e1e42 | 50 | #include "gdb_sys_time.h" |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
94585166 DB |
78 | /* Per-program-space data key. */ |
79 | static const struct program_space_data *remote_pspace_data; | |
80 | ||
81 | /* The variable registered as the control variable used by the | |
82 | remote exec-file commands. While the remote exec-file setting is | |
83 | per-program-space, the set/show machinery uses this as the | |
84 | location of the remote exec-file value. */ | |
85 | static char *remote_exec_file_var; | |
86 | ||
6765f3e5 DJ |
87 | /* The size to align memory write packets, when practical. The protocol |
88 | does not guarantee any alignment, and gdb will generate short | |
89 | writes and unaligned writes, but even as a best-effort attempt this | |
90 | can improve bulk transfers. For instance, if a write is misaligned | |
91 | relative to the target's data bus, the stub may need to make an extra | |
92 | round trip fetching data from the target. This doesn't make a | |
93 | huge difference, but it's easy to do, so we try to be helpful. | |
94 | ||
95 | The alignment chosen is arbitrary; usually data bus width is | |
96 | important here, not the possibly larger cache line size. */ | |
97 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
98 | ||
23860348 | 99 | /* Prototypes for local functions. */ |
934b9bac | 100 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 101 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 102 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 103 | int forever, int *is_notif); |
6426a772 | 104 | |
934b9bac JK |
105 | static void async_handle_remote_sigint (int); |
106 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 107 | |
a14ed312 | 108 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 109 | |
f32dbf8c MM |
110 | static void remote_prepare_to_store (struct target_ops *self, |
111 | struct regcache *regcache); | |
c906108c | 112 | |
014f9477 TT |
113 | static void remote_open_1 (const char *, int, struct target_ops *, |
114 | int extended_p); | |
c906108c | 115 | |
de90e03d | 116 | static void remote_close (struct target_ops *self); |
c906108c | 117 | |
cbb8991c DB |
118 | struct remote_state; |
119 | ||
120 | static int remote_vkill (int pid, struct remote_state *rs); | |
121 | ||
136d6dae | 122 | static void remote_mourn (struct target_ops *ops); |
c906108c | 123 | |
a14ed312 | 124 | static void extended_remote_restart (void); |
c906108c | 125 | |
136d6dae | 126 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 127 | |
6d820c5c | 128 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 129 | |
a14ed312 | 130 | static int readchar (int timeout); |
c906108c | 131 | |
c33e31fd PA |
132 | static void remote_serial_write (const char *str, int len); |
133 | ||
7d85a9c0 | 134 | static void remote_kill (struct target_ops *ops); |
c906108c | 135 | |
6a109b6b | 136 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 137 | |
6a109b6b | 138 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 139 | |
6a3753b3 | 140 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 141 | |
934b9bac | 142 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 143 | |
a14ed312 | 144 | static void interrupt_query (void); |
c906108c | 145 | |
79d7f229 PA |
146 | static void set_general_thread (struct ptid ptid); |
147 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 148 | |
a14ed312 | 149 | static void get_offsets (void); |
c906108c | 150 | |
6d820c5c DJ |
151 | static void skip_frame (void); |
152 | ||
153 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumlen (ULONGEST num); |
c906108c | 156 | |
a14ed312 | 157 | static void init_remote_ops (void); |
c906108c | 158 | |
a14ed312 | 159 | static void init_extended_remote_ops (void); |
c906108c | 160 | |
1eab8a48 | 161 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
baa336ce | 171 | static void print_packet (const char *); |
c906108c | 172 | |
a14ed312 | 173 | static void compare_sections_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void packet_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 178 | |
39f77062 | 179 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 180 | |
baa336ce | 181 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 182 | |
a14ed312 | 183 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 184 | |
5a2468f5 | 185 | struct packet_config; |
5a2468f5 | 186 | |
a14ed312 | 187 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 188 | |
bb572ddd DJ |
189 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
190 | int from_tty, | |
191 | struct cmd_list_element *c, | |
192 | const char *value); | |
193 | ||
82f73884 PA |
194 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
195 | static ptid_t read_ptid (char *buf, char **obuf); | |
196 | ||
c378d69d | 197 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 198 | |
8bd200f1 TT |
199 | static int remote_get_trace_status (struct target_ops *self, |
200 | struct trace_status *ts); | |
d5551862 | 201 | |
ab6617cc TT |
202 | static int remote_upload_tracepoints (struct target_ops *self, |
203 | struct uploaded_tp **utpp); | |
00bf0b85 | 204 | |
181e3713 TT |
205 | static int remote_upload_trace_state_variables (struct target_ops *self, |
206 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 207 | |
c8d104ad PA |
208 | static void remote_query_supported (void); |
209 | ||
36d25514 | 210 | static void remote_check_symbols (void); |
c8d104ad | 211 | |
a14ed312 | 212 | void _initialize_remote (void); |
c906108c | 213 | |
74531fed | 214 | struct stop_reply; |
74531fed | 215 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 216 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 217 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 218 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
219 | static int peek_stop_reply (ptid_t ptid); |
220 | ||
cbb8991c DB |
221 | struct threads_listing_context; |
222 | static void remove_new_fork_children (struct threads_listing_context *); | |
223 | ||
74531fed | 224 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 225 | |
e3594fd1 | 226 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 227 | |
d962ef82 DJ |
228 | static int remote_read_description_p (struct target_ops *target); |
229 | ||
176a6961 | 230 | static void remote_console_output (char *msg); |
dde08ee1 | 231 | |
efcc2da7 | 232 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 233 | |
78eff0ec | 234 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 235 | |
f4abbc16 MM |
236 | static void remote_btrace_reset (void); |
237 | ||
221e1a37 PA |
238 | static int stop_reply_queue_length (void); |
239 | ||
80152258 PA |
240 | static void readahead_cache_invalidate (void); |
241 | ||
a6b151f1 DJ |
242 | /* For "remote". */ |
243 | ||
244 | static struct cmd_list_element *remote_cmdlist; | |
245 | ||
bb572ddd DJ |
246 | /* For "set remote" and "show remote". */ |
247 | ||
248 | static struct cmd_list_element *remote_set_cmdlist; | |
249 | static struct cmd_list_element *remote_show_cmdlist; | |
250 | ||
d458bd84 PA |
251 | /* Stub vCont actions support. |
252 | ||
253 | Each field is a boolean flag indicating whether the stub reports | |
254 | support for the corresponding action. */ | |
255 | ||
256 | struct vCont_action_support | |
257 | { | |
258 | /* vCont;t */ | |
259 | int t; | |
c1e36e3e PA |
260 | |
261 | /* vCont;r */ | |
262 | int r; | |
d458bd84 PA |
263 | }; |
264 | ||
c1e36e3e PA |
265 | /* Controls whether GDB is willing to use range stepping. */ |
266 | ||
267 | static int use_range_stepping = 1; | |
268 | ||
0d031856 TT |
269 | #define OPAQUETHREADBYTES 8 |
270 | ||
271 | /* a 64 bit opaque identifier */ | |
272 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
273 | ||
274 | /* About this many threadisds fit in a packet. */ | |
275 | ||
276 | #define MAXTHREADLISTRESULTS 32 | |
277 | ||
80152258 PA |
278 | /* Data for the vFile:pread readahead cache. */ |
279 | ||
280 | struct readahead_cache | |
281 | { | |
282 | /* The file descriptor for the file that is being cached. -1 if the | |
283 | cache is invalid. */ | |
284 | int fd; | |
285 | ||
286 | /* The offset into the file that the cache buffer corresponds | |
287 | to. */ | |
288 | ULONGEST offset; | |
289 | ||
290 | /* The buffer holding the cache contents. */ | |
291 | gdb_byte *buf; | |
292 | /* The buffer's size. We try to read as much as fits into a packet | |
293 | at a time. */ | |
294 | size_t bufsize; | |
295 | ||
296 | /* Cache hit and miss counters. */ | |
297 | ULONGEST hit_count; | |
298 | ULONGEST miss_count; | |
299 | }; | |
300 | ||
ea9c271d DJ |
301 | /* Description of the remote protocol state for the currently |
302 | connected target. This is per-target state, and independent of the | |
303 | selected architecture. */ | |
304 | ||
305 | struct remote_state | |
306 | { | |
307 | /* A buffer to use for incoming packets, and its current size. The | |
308 | buffer is grown dynamically for larger incoming packets. | |
309 | Outgoing packets may also be constructed in this buffer. | |
310 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
311 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
312 | packets. */ | |
313 | char *buf; | |
314 | long buf_size; | |
be2a5f71 | 315 | |
1e51243a PA |
316 | /* True if we're going through initial connection setup (finding out |
317 | about the remote side's threads, relocating symbols, etc.). */ | |
318 | int starting_up; | |
319 | ||
be2a5f71 DJ |
320 | /* If we negotiated packet size explicitly (and thus can bypass |
321 | heuristics for the largest packet size that will not overflow | |
322 | a buffer in the stub), this will be set to that packet size. | |
323 | Otherwise zero, meaning to use the guessed size. */ | |
324 | long explicit_packet_size; | |
2d717e4f DJ |
325 | |
326 | /* remote_wait is normally called when the target is running and | |
327 | waits for a stop reply packet. But sometimes we need to call it | |
328 | when the target is already stopped. We can send a "?" packet | |
329 | and have remote_wait read the response. Or, if we already have | |
330 | the response, we can stash it in BUF and tell remote_wait to | |
331 | skip calling getpkt. This flag is set when BUF contains a | |
332 | stop reply packet and the target is not waiting. */ | |
333 | int cached_wait_status; | |
a6f3e723 SL |
334 | |
335 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
336 | expect acks from each other. The connection is assumed to be | |
337 | reliable. */ | |
338 | int noack_mode; | |
82f73884 PA |
339 | |
340 | /* True if we're connected in extended remote mode. */ | |
341 | int extended; | |
342 | ||
e24a49d8 PA |
343 | /* True if we resumed the target and we're waiting for the target to |
344 | stop. In the mean time, we can't start another command/query. | |
345 | The remote server wouldn't be ready to process it, so we'd | |
346 | timeout waiting for a reply that would never come and eventually | |
347 | we'd close the connection. This can happen in asynchronous mode | |
348 | because we allow GDB commands while the target is running. */ | |
349 | int waiting_for_stop_reply; | |
74531fed | 350 | |
d458bd84 PA |
351 | /* The status of the stub support for the various vCont actions. */ |
352 | struct vCont_action_support supports_vCont; | |
782b2b07 | 353 | |
3a29589a DJ |
354 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
355 | responded to that. */ | |
356 | int ctrlc_pending_p; | |
5d93a237 TT |
357 | |
358 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
359 | remote_open knows that we don't have a file open when the program | |
360 | starts. */ | |
361 | struct serial *remote_desc; | |
47f8a51d TT |
362 | |
363 | /* These are the threads which we last sent to the remote system. The | |
364 | TID member will be -1 for all or -2 for not sent yet. */ | |
365 | ptid_t general_thread; | |
366 | ptid_t continue_thread; | |
262e1174 TT |
367 | |
368 | /* This is the traceframe which we last selected on the remote system. | |
369 | It will be -1 if no traceframe is selected. */ | |
370 | int remote_traceframe_number; | |
747dc59d TT |
371 | |
372 | char *last_pass_packet; | |
5e4a05c4 TT |
373 | |
374 | /* The last QProgramSignals packet sent to the target. We bypass | |
375 | sending a new program signals list down to the target if the new | |
376 | packet is exactly the same as the last we sent. IOW, we only let | |
377 | the target know about program signals list changes. */ | |
378 | char *last_program_signals_packet; | |
b73be471 TT |
379 | |
380 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
381 | |
382 | int last_sent_step; | |
8e88304f TT |
383 | |
384 | char *finished_object; | |
385 | char *finished_annex; | |
386 | ULONGEST finished_offset; | |
b80fafe3 TT |
387 | |
388 | /* Should we try the 'ThreadInfo' query packet? | |
389 | ||
390 | This variable (NOT available to the user: auto-detect only!) | |
391 | determines whether GDB will use the new, simpler "ThreadInfo" | |
392 | query or the older, more complex syntax for thread queries. | |
393 | This is an auto-detect variable (set to true at each connect, | |
394 | and set to false when the target fails to recognize it). */ | |
395 | int use_threadinfo_query; | |
396 | int use_threadextra_query; | |
88b496c3 | 397 | |
ee154bee TT |
398 | /* This is set to the data address of the access causing the target |
399 | to stop for a watchpoint. */ | |
400 | CORE_ADDR remote_watch_data_address; | |
401 | ||
f7e6eed5 PA |
402 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
403 | enum target_stop_reason stop_reason; | |
0d031856 TT |
404 | |
405 | threadref echo_nextthread; | |
406 | threadref nextthread; | |
407 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
408 | |
409 | /* The state of remote notification. */ | |
410 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
411 | |
412 | /* The branch trace configuration. */ | |
413 | struct btrace_config btrace_config; | |
15a201c8 GB |
414 | |
415 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
416 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
417 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
418 | has yet been sent. */ | |
419 | int fs_pid; | |
80152258 PA |
420 | |
421 | /* A readahead cache for vFile:pread. Often, reading a binary | |
422 | involves a sequence of small reads. E.g., when parsing an ELF | |
423 | file. A readahead cache helps mostly the case of remote | |
424 | debugging on a connection with higher latency, due to the | |
425 | request/reply nature of the RSP. We only cache data for a single | |
426 | file descriptor at a time. */ | |
427 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
428 | }; |
429 | ||
dc146f7c VP |
430 | /* Private data that we'll store in (struct thread_info)->private. */ |
431 | struct private_thread_info | |
432 | { | |
433 | char *extra; | |
434 | int core; | |
435 | }; | |
436 | ||
437 | static void | |
438 | free_private_thread_info (struct private_thread_info *info) | |
439 | { | |
440 | xfree (info->extra); | |
441 | xfree (info); | |
442 | } | |
443 | ||
ea9c271d DJ |
444 | /* This data could be associated with a target, but we do not always |
445 | have access to the current target when we need it, so for now it is | |
446 | static. This will be fine for as long as only one target is in use | |
447 | at a time. */ | |
cf792862 | 448 | static struct remote_state *remote_state; |
ea9c271d DJ |
449 | |
450 | static struct remote_state * | |
0b83947e | 451 | get_remote_state_raw (void) |
ea9c271d | 452 | { |
cf792862 TT |
453 | return remote_state; |
454 | } | |
455 | ||
456 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
457 | return it. */ | |
458 | ||
459 | static struct remote_state * | |
460 | new_remote_state (void) | |
461 | { | |
462 | struct remote_state *result = XCNEW (struct remote_state); | |
463 | ||
464 | /* The default buffer size is unimportant; it will be expanded | |
465 | whenever a larger buffer is needed. */ | |
466 | result->buf_size = 400; | |
467 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 468 | result->remote_traceframe_number = -1; |
b73be471 | 469 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 470 | result->fs_pid = -1; |
cf792862 TT |
471 | |
472 | return result; | |
ea9c271d DJ |
473 | } |
474 | ||
475 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 476 | |
ad10f812 AC |
477 | struct packet_reg |
478 | { | |
479 | long offset; /* Offset into G packet. */ | |
480 | long regnum; /* GDB's internal register number. */ | |
481 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 482 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 483 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 484 | at present. */ |
f5656ead | 485 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 486 | at present. */ |
ad10f812 AC |
487 | }; |
488 | ||
ea9c271d | 489 | struct remote_arch_state |
d01949b6 | 490 | { |
ad10f812 AC |
491 | /* Description of the remote protocol registers. */ |
492 | long sizeof_g_packet; | |
b323314b AC |
493 | |
494 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 495 | (making an array gdbarch_num_regs in size). */ |
b323314b | 496 | struct packet_reg *regs; |
ad10f812 | 497 | |
d01949b6 AC |
498 | /* This is the size (in chars) of the first response to the ``g'' |
499 | packet. It is used as a heuristic when determining the maximum | |
500 | size of memory-read and memory-write packets. A target will | |
501 | typically only reserve a buffer large enough to hold the ``g'' | |
502 | packet. The size does not include packet overhead (headers and | |
23860348 | 503 | trailers). */ |
d01949b6 AC |
504 | long actual_register_packet_size; |
505 | ||
506 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 507 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
508 | long remote_packet_size; |
509 | }; | |
510 | ||
35b1e5cc SS |
511 | /* Utility: generate error from an incoming stub packet. */ |
512 | static void | |
513 | trace_error (char *buf) | |
514 | { | |
515 | if (*buf++ != 'E') | |
516 | return; /* not an error msg */ | |
517 | switch (*buf) | |
518 | { | |
519 | case '1': /* malformed packet error */ | |
520 | if (*++buf == '0') /* general case: */ | |
521 | error (_("remote.c: error in outgoing packet.")); | |
522 | else | |
523 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
524 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
525 | default: |
526 | error (_("Target returns error code '%s'."), buf); | |
527 | } | |
528 | } | |
529 | ||
530 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
531 | static char * | |
532 | remote_get_noisy_reply (char **buf_p, | |
533 | long *sizeof_buf) | |
534 | { | |
535 | do /* Loop on reply from remote stub. */ | |
536 | { | |
537 | char *buf; | |
a744cf53 | 538 | |
0df8b418 | 539 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
540 | getpkt (buf_p, sizeof_buf, 0); |
541 | buf = *buf_p; | |
ad91cd99 | 542 | if (buf[0] == 'E') |
35b1e5cc | 543 | trace_error (buf); |
61012eef | 544 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
545 | { |
546 | ULONGEST ul; | |
547 | CORE_ADDR from, to, org_to; | |
548 | char *p, *pp; | |
549 | int adjusted_size = 0; | |
7556d4a4 | 550 | int relocated = 0; |
dde08ee1 PA |
551 | |
552 | p = buf + strlen ("qRelocInsn:"); | |
553 | pp = unpack_varlen_hex (p, &ul); | |
554 | if (*pp != ';') | |
cb91c06a | 555 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
556 | from = ul; |
557 | ||
558 | p = pp + 1; | |
a9cbf802 | 559 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
560 | to = ul; |
561 | ||
562 | org_to = to; | |
563 | ||
492d29ea | 564 | TRY |
dde08ee1 | 565 | { |
f5656ead | 566 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 567 | relocated = 1; |
dde08ee1 | 568 | } |
492d29ea | 569 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
570 | { |
571 | if (ex.error == MEMORY_ERROR) | |
572 | { | |
573 | /* Propagate memory errors silently back to the | |
574 | target. The stub may have limited the range of | |
575 | addresses we can write to, for example. */ | |
576 | } | |
577 | else | |
578 | { | |
579 | /* Something unexpectedly bad happened. Be verbose | |
580 | so we can tell what, and propagate the error back | |
581 | to the stub, so it doesn't get stuck waiting for | |
582 | a response. */ | |
583 | exception_fprintf (gdb_stderr, ex, | |
584 | _("warning: relocating instruction: ")); | |
585 | } | |
586 | putpkt ("E01"); | |
587 | } | |
492d29ea | 588 | END_CATCH |
7556d4a4 PA |
589 | |
590 | if (relocated) | |
dde08ee1 PA |
591 | { |
592 | adjusted_size = to - org_to; | |
593 | ||
bba74b36 | 594 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
595 | putpkt (buf); |
596 | } | |
dde08ee1 | 597 | } |
ad91cd99 | 598 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
599 | remote_console_output (buf + 1); /* 'O' message from stub */ |
600 | else | |
0df8b418 | 601 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
602 | } |
603 | while (1); | |
604 | } | |
3c3bea1c | 605 | |
d01949b6 AC |
606 | /* Handle for retreving the remote protocol data from gdbarch. */ |
607 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
608 | ||
ea9c271d DJ |
609 | static struct remote_arch_state * |
610 | get_remote_arch_state (void) | |
d01949b6 | 611 | { |
17d8546e | 612 | gdb_assert (target_gdbarch () != NULL); |
f5656ead | 613 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
614 | } |
615 | ||
0b83947e DJ |
616 | /* Fetch the global remote target state. */ |
617 | ||
618 | static struct remote_state * | |
619 | get_remote_state (void) | |
620 | { | |
621 | /* Make sure that the remote architecture state has been | |
622 | initialized, because doing so might reallocate rs->buf. Any | |
623 | function which calls getpkt also needs to be mindful of changes | |
624 | to rs->buf, but this call limits the number of places which run | |
625 | into trouble. */ | |
626 | get_remote_arch_state (); | |
627 | ||
628 | return get_remote_state_raw (); | |
629 | } | |
630 | ||
94585166 DB |
631 | /* Cleanup routine for the remote module's pspace data. */ |
632 | ||
633 | static void | |
634 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
635 | { | |
636 | char *remote_exec_file = arg; | |
637 | ||
638 | xfree (remote_exec_file); | |
639 | } | |
640 | ||
641 | /* Fetch the remote exec-file from the current program space. */ | |
642 | ||
643 | static const char * | |
644 | get_remote_exec_file (void) | |
645 | { | |
646 | char *remote_exec_file; | |
647 | ||
648 | remote_exec_file = program_space_data (current_program_space, | |
649 | remote_pspace_data); | |
650 | if (remote_exec_file == NULL) | |
651 | return ""; | |
652 | ||
653 | return remote_exec_file; | |
654 | } | |
655 | ||
656 | /* Set the remote exec file for PSPACE. */ | |
657 | ||
658 | static void | |
659 | set_pspace_remote_exec_file (struct program_space *pspace, | |
660 | char *remote_exec_file) | |
661 | { | |
662 | char *old_file = program_space_data (pspace, remote_pspace_data); | |
663 | ||
664 | xfree (old_file); | |
665 | set_program_space_data (pspace, remote_pspace_data, | |
666 | xstrdup (remote_exec_file)); | |
667 | } | |
668 | ||
669 | /* The "set/show remote exec-file" set command hook. */ | |
670 | ||
671 | static void | |
672 | set_remote_exec_file (char *ignored, int from_tty, | |
673 | struct cmd_list_element *c) | |
674 | { | |
675 | gdb_assert (remote_exec_file_var != NULL); | |
676 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
677 | } | |
678 | ||
679 | /* The "set/show remote exec-file" show command hook. */ | |
680 | ||
681 | static void | |
682 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
683 | struct cmd_list_element *cmd, const char *value) | |
684 | { | |
685 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
686 | } | |
687 | ||
74ca34ce DJ |
688 | static int |
689 | compare_pnums (const void *lhs_, const void *rhs_) | |
690 | { | |
691 | const struct packet_reg * const *lhs = lhs_; | |
692 | const struct packet_reg * const *rhs = rhs_; | |
693 | ||
694 | if ((*lhs)->pnum < (*rhs)->pnum) | |
695 | return -1; | |
696 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
697 | return 0; | |
698 | else | |
699 | return 1; | |
700 | } | |
701 | ||
c21236dc PA |
702 | static int |
703 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 704 | { |
74ca34ce | 705 | int regnum, num_remote_regs, offset; |
74ca34ce | 706 | struct packet_reg **remote_regs; |
ea9c271d | 707 | |
4a22f64d | 708 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 709 | { |
c21236dc | 710 | struct packet_reg *r = ®s[regnum]; |
baef701f | 711 | |
4a22f64d | 712 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
713 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
714 | r->pnum = -1; | |
715 | else | |
716 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
717 | ||
b323314b | 718 | r->regnum = regnum; |
74ca34ce DJ |
719 | } |
720 | ||
721 | /* Define the g/G packet format as the contents of each register | |
722 | with a remote protocol number, in order of ascending protocol | |
723 | number. */ | |
724 | ||
4a22f64d | 725 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 726 | * sizeof (struct packet_reg *)); |
f57d151a | 727 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 728 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 729 | regnum++) |
c21236dc PA |
730 | if (regs[regnum].pnum != -1) |
731 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 732 | |
74ca34ce DJ |
733 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
734 | compare_pnums); | |
735 | ||
736 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
737 | { | |
738 | remote_regs[regnum]->in_g_packet = 1; | |
739 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 740 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
741 | } |
742 | ||
c21236dc PA |
743 | return offset; |
744 | } | |
745 | ||
746 | /* Given the architecture described by GDBARCH, return the remote | |
747 | protocol register's number and the register's offset in the g/G | |
748 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
749 | If the target does not have a mapping for REGNUM, return false, | |
750 | otherwise, return true. */ | |
751 | ||
752 | int | |
753 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
754 | int *pnum, int *poffset) | |
755 | { | |
756 | int sizeof_g_packet; | |
757 | struct packet_reg *regs; | |
758 | struct cleanup *old_chain; | |
759 | ||
760 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
761 | ||
762 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
763 | old_chain = make_cleanup (xfree, regs); | |
764 | ||
765 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
766 | ||
767 | *pnum = regs[regnum].pnum; | |
768 | *poffset = regs[regnum].offset; | |
769 | ||
770 | do_cleanups (old_chain); | |
771 | ||
772 | return *pnum != -1; | |
773 | } | |
774 | ||
775 | static void * | |
776 | init_remote_state (struct gdbarch *gdbarch) | |
777 | { | |
778 | struct remote_state *rs = get_remote_state_raw (); | |
779 | struct remote_arch_state *rsa; | |
780 | ||
781 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
782 | ||
783 | /* Use the architecture to build a regnum<->pnum table, which will be | |
784 | 1:1 unless a feature set specifies otherwise. */ | |
785 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
786 | gdbarch_num_regs (gdbarch), | |
787 | struct packet_reg); | |
788 | ||
74ca34ce DJ |
789 | /* Record the maximum possible size of the g packet - it may turn out |
790 | to be smaller. */ | |
c21236dc | 791 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 792 | |
0df8b418 | 793 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
794 | remote stubs have a hardwired buffer size of 400 bytes |
795 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
796 | as the maximum packet-size to ensure that the packet and an extra | |
797 | NUL character can always fit in the buffer. This stops GDB | |
798 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
799 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
800 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 801 | |
ea9c271d DJ |
802 | /* This one is filled in when a ``g'' packet is received. */ |
803 | rsa->actual_register_packet_size = 0; | |
804 | ||
805 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
806 | default, adjust the size accordingly. Remember that each byte is |
807 | encoded as two characters. 32 is the overhead for the packet | |
808 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 809 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 810 | little. */ |
ea9c271d DJ |
811 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
812 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 813 | |
ea9c271d DJ |
814 | /* Make sure that the packet buffer is plenty big enough for |
815 | this architecture. */ | |
816 | if (rs->buf_size < rsa->remote_packet_size) | |
817 | { | |
818 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 819 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 820 | } |
6d820c5c | 821 | |
ea9c271d DJ |
822 | return rsa; |
823 | } | |
824 | ||
825 | /* Return the current allowed size of a remote packet. This is | |
826 | inferred from the current architecture, and should be used to | |
827 | limit the length of outgoing packets. */ | |
828 | static long | |
829 | get_remote_packet_size (void) | |
830 | { | |
be2a5f71 | 831 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
832 | struct remote_arch_state *rsa = get_remote_arch_state (); |
833 | ||
be2a5f71 DJ |
834 | if (rs->explicit_packet_size) |
835 | return rs->explicit_packet_size; | |
836 | ||
ea9c271d | 837 | return rsa->remote_packet_size; |
d01949b6 AC |
838 | } |
839 | ||
ad10f812 | 840 | static struct packet_reg * |
ea9c271d | 841 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 842 | { |
f5656ead | 843 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
844 | return NULL; |
845 | else | |
ad10f812 | 846 | { |
ea9c271d | 847 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 848 | |
b323314b AC |
849 | gdb_assert (r->regnum == regnum); |
850 | return r; | |
ad10f812 | 851 | } |
ad10f812 AC |
852 | } |
853 | ||
854 | static struct packet_reg * | |
ea9c271d | 855 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 856 | { |
b323314b | 857 | int i; |
a744cf53 | 858 | |
f5656ead | 859 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 860 | { |
ea9c271d | 861 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 862 | |
b323314b AC |
863 | if (r->pnum == pnum) |
864 | return r; | |
ad10f812 AC |
865 | } |
866 | return NULL; | |
d01949b6 AC |
867 | } |
868 | ||
c906108c SS |
869 | static struct target_ops remote_ops; |
870 | ||
871 | static struct target_ops extended_remote_ops; | |
872 | ||
6426a772 JM |
873 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
874 | ``forever'' still use the normal timeout mechanism. This is | |
875 | currently used by the ASYNC code to guarentee that target reads | |
876 | during the initial connect always time-out. Once getpkt has been | |
877 | modified to return a timeout indication and, in turn | |
878 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 879 | this can go away. */ |
6426a772 JM |
880 | static int wait_forever_enabled_p = 1; |
881 | ||
9a7071a8 JB |
882 | /* Allow the user to specify what sequence to send to the remote |
883 | when he requests a program interruption: Although ^C is usually | |
884 | what remote systems expect (this is the default, here), it is | |
885 | sometimes preferable to send a break. On other systems such | |
886 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
887 | is required in order to interrupt the execution. */ | |
888 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
889 | const char interrupt_sequence_break[] = "BREAK"; | |
890 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 891 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
892 | { |
893 | interrupt_sequence_control_c, | |
894 | interrupt_sequence_break, | |
895 | interrupt_sequence_break_g, | |
896 | NULL | |
897 | }; | |
898 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
899 | ||
900 | static void | |
901 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
902 | struct cmd_list_element *c, | |
903 | const char *value) | |
904 | { | |
905 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
906 | fprintf_filtered (file, | |
907 | _("Send the ASCII ETX character (Ctrl-c) " | |
908 | "to the remote target to interrupt the " | |
909 | "execution of the program.\n")); | |
910 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
911 | fprintf_filtered (file, | |
912 | _("send a break signal to the remote target " | |
913 | "to interrupt the execution of the program.\n")); | |
914 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
915 | fprintf_filtered (file, | |
916 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
917 | "the remote target to interrupt the execution " | |
918 | "of Linux kernel.\n")); | |
919 | else | |
920 | internal_error (__FILE__, __LINE__, | |
921 | _("Invalid value for interrupt_sequence_mode: %s."), | |
922 | interrupt_sequence_mode); | |
923 | } | |
6426a772 | 924 | |
9a7071a8 JB |
925 | /* This boolean variable specifies whether interrupt_sequence is sent |
926 | to the remote target when gdb connects to it. | |
927 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
928 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
929 | static int interrupt_on_connect = 0; | |
c906108c | 930 | |
9a7071a8 JB |
931 | /* This variable is used to implement the "set/show remotebreak" commands. |
932 | Since these commands are now deprecated in favor of "set/show remote | |
933 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
934 | static int remote_break; |
935 | ||
9a7071a8 JB |
936 | static void |
937 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
938 | { | |
939 | if (remote_break) | |
940 | interrupt_sequence_mode = interrupt_sequence_break; | |
941 | else | |
942 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
943 | } | |
944 | ||
945 | static void | |
946 | show_remotebreak (struct ui_file *file, int from_tty, | |
947 | struct cmd_list_element *c, | |
948 | const char *value) | |
949 | { | |
950 | } | |
951 | ||
c906108c SS |
952 | /* This variable sets the number of bits in an address that are to be |
953 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 954 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
955 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
956 | initial implementation of remote.c restricted the address sent in | |
957 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
958 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
959 | address was never sent. Since fixing this bug may cause a break in | |
960 | some remote targets this variable is principly provided to | |
23860348 | 961 | facilitate backward compatibility. */ |
c906108c | 962 | |
883b9c6c | 963 | static unsigned int remote_address_size; |
c906108c | 964 | |
75c99385 PA |
965 | /* Temporary to track who currently owns the terminal. See |
966 | remote_terminal_* for more details. */ | |
6426a772 JM |
967 | |
968 | static int remote_async_terminal_ours_p; | |
969 | ||
11cf8741 | 970 | \f |
11cf8741 | 971 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
972 | memory read/write packet. MIN (rsa->remote_packet_size, |
973 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 974 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
975 | (speed up transfers). The variables ``preferred_*'' (the user |
976 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 977 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
978 | |
979 | struct memory_packet_config | |
980 | { | |
981 | char *name; | |
982 | long size; | |
983 | int fixed_p; | |
984 | }; | |
985 | ||
a5c0808e PA |
986 | /* The default max memory-write-packet-size. The 16k is historical. |
987 | (It came from older GDB's using alloca for buffers and the | |
988 | knowledge (folklore?) that some hosts don't cope very well with | |
989 | large alloca calls.) */ | |
990 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
991 | ||
992 | /* The minimum remote packet size for memory transfers. Ensures we | |
993 | can write at least one byte. */ | |
994 | #define MIN_MEMORY_PACKET_SIZE 20 | |
995 | ||
11cf8741 JM |
996 | /* Compute the current size of a read/write packet. Since this makes |
997 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
998 | ||
999 | static long | |
1000 | get_memory_packet_size (struct memory_packet_config *config) | |
1001 | { | |
d01949b6 | 1002 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1003 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1004 | ||
11cf8741 JM |
1005 | long what_they_get; |
1006 | if (config->fixed_p) | |
1007 | { | |
1008 | if (config->size <= 0) | |
a5c0808e | 1009 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1010 | else |
1011 | what_they_get = config->size; | |
1012 | } | |
1013 | else | |
1014 | { | |
ea9c271d | 1015 | what_they_get = get_remote_packet_size (); |
23860348 | 1016 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1017 | if (config->size > 0 |
1018 | && what_they_get > config->size) | |
1019 | what_they_get = config->size; | |
be2a5f71 DJ |
1020 | |
1021 | /* Limit it to the size of the targets ``g'' response unless we have | |
1022 | permission from the stub to use a larger packet size. */ | |
1023 | if (rs->explicit_packet_size == 0 | |
1024 | && rsa->actual_register_packet_size > 0 | |
1025 | && what_they_get > rsa->actual_register_packet_size) | |
1026 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1027 | } |
a5c0808e PA |
1028 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1029 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1030 | |
1031 | /* Make sure there is room in the global buffer for this packet | |
1032 | (including its trailing NUL byte). */ | |
1033 | if (rs->buf_size < what_they_get + 1) | |
1034 | { | |
1035 | rs->buf_size = 2 * what_they_get; | |
1036 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
1037 | } | |
1038 | ||
11cf8741 JM |
1039 | return what_they_get; |
1040 | } | |
1041 | ||
0df8b418 | 1042 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1043 | something really big then do a sanity check. */ |
11cf8741 JM |
1044 | |
1045 | static void | |
1046 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1047 | { | |
1048 | int fixed_p = config->fixed_p; | |
1049 | long size = config->size; | |
a744cf53 | 1050 | |
11cf8741 | 1051 | if (args == NULL) |
8a3fe4f8 | 1052 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1053 | else if (strcmp (args, "hard") == 0 |
1054 | || strcmp (args, "fixed") == 0) | |
1055 | fixed_p = 1; | |
1056 | else if (strcmp (args, "soft") == 0 | |
1057 | || strcmp (args, "limit") == 0) | |
1058 | fixed_p = 0; | |
1059 | else | |
1060 | { | |
1061 | char *end; | |
a744cf53 | 1062 | |
11cf8741 JM |
1063 | size = strtoul (args, &end, 0); |
1064 | if (args == end) | |
8a3fe4f8 | 1065 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1066 | |
1067 | /* Instead of explicitly capping the size of a packet to or | |
1068 | disallowing it, the user is allowed to set the size to | |
1069 | something arbitrarily large. */ | |
11cf8741 | 1070 | } |
a5c0808e PA |
1071 | |
1072 | /* So that the query shows the correct value. */ | |
1073 | if (size <= 0) | |
1074 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1075 | ||
23860348 | 1076 | /* Extra checks? */ |
11cf8741 JM |
1077 | if (fixed_p && !config->fixed_p) |
1078 | { | |
e2e0b3e5 AC |
1079 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1080 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1081 | config->name, size)) |
8a3fe4f8 | 1082 | error (_("Packet size not changed.")); |
11cf8741 | 1083 | } |
23860348 | 1084 | /* Update the config. */ |
11cf8741 JM |
1085 | config->fixed_p = fixed_p; |
1086 | config->size = size; | |
1087 | } | |
1088 | ||
1089 | static void | |
1090 | show_memory_packet_size (struct memory_packet_config *config) | |
1091 | { | |
a3f17187 | 1092 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1093 | if (config->fixed_p) |
a3f17187 | 1094 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1095 | get_memory_packet_size (config)); |
1096 | else | |
a3f17187 | 1097 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1098 | get_memory_packet_size (config)); |
1099 | } | |
1100 | ||
1101 | static struct memory_packet_config memory_write_packet_config = | |
1102 | { | |
1103 | "memory-write-packet-size", | |
1104 | }; | |
1105 | ||
1106 | static void | |
1107 | set_memory_write_packet_size (char *args, int from_tty) | |
1108 | { | |
1109 | set_memory_packet_size (args, &memory_write_packet_config); | |
1110 | } | |
1111 | ||
1112 | static void | |
1113 | show_memory_write_packet_size (char *args, int from_tty) | |
1114 | { | |
1115 | show_memory_packet_size (&memory_write_packet_config); | |
1116 | } | |
1117 | ||
1118 | static long | |
1119 | get_memory_write_packet_size (void) | |
1120 | { | |
1121 | return get_memory_packet_size (&memory_write_packet_config); | |
1122 | } | |
1123 | ||
1124 | static struct memory_packet_config memory_read_packet_config = | |
1125 | { | |
1126 | "memory-read-packet-size", | |
1127 | }; | |
1128 | ||
1129 | static void | |
1130 | set_memory_read_packet_size (char *args, int from_tty) | |
1131 | { | |
1132 | set_memory_packet_size (args, &memory_read_packet_config); | |
1133 | } | |
1134 | ||
1135 | static void | |
1136 | show_memory_read_packet_size (char *args, int from_tty) | |
1137 | { | |
1138 | show_memory_packet_size (&memory_read_packet_config); | |
1139 | } | |
1140 | ||
1141 | static long | |
1142 | get_memory_read_packet_size (void) | |
1143 | { | |
1144 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1145 | |
11cf8741 JM |
1146 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1147 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1148 | increased beyond this. */ |
1149 | if (size > get_remote_packet_size ()) | |
1150 | size = get_remote_packet_size (); | |
11cf8741 JM |
1151 | return size; |
1152 | } | |
1153 | ||
11cf8741 | 1154 | \f |
5a2468f5 | 1155 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1156 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1157 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1158 | |
1159 | enum packet_support | |
1160 | { | |
1161 | PACKET_SUPPORT_UNKNOWN = 0, | |
1162 | PACKET_ENABLE, | |
1163 | PACKET_DISABLE | |
1164 | }; | |
1165 | ||
5a2468f5 JM |
1166 | struct packet_config |
1167 | { | |
bb572ddd DJ |
1168 | const char *name; |
1169 | const char *title; | |
4082afcc PA |
1170 | |
1171 | /* If auto, GDB auto-detects support for this packet or feature, | |
1172 | either through qSupported, or by trying the packet and looking | |
1173 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1174 | packet. If false, the packet is disabled. Configs that don't |
1175 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1176 | enum auto_boolean detect; |
4082afcc PA |
1177 | |
1178 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1179 | enum packet_support support; |
1180 | }; | |
1181 | ||
d471ea57 | 1182 | /* Analyze a packet's return value and update the packet config |
23860348 | 1183 | accordingly. */ |
d471ea57 AC |
1184 | |
1185 | enum packet_result | |
1186 | { | |
1187 | PACKET_ERROR, | |
1188 | PACKET_OK, | |
1189 | PACKET_UNKNOWN | |
1190 | }; | |
1191 | ||
4082afcc PA |
1192 | static enum packet_support packet_config_support (struct packet_config *config); |
1193 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1194 | |
1195 | static void | |
fba45db2 | 1196 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1197 | { |
1198 | char *support = "internal-error"; | |
a744cf53 | 1199 | |
4082afcc | 1200 | switch (packet_config_support (config)) |
5a2468f5 JM |
1201 | { |
1202 | case PACKET_ENABLE: | |
1203 | support = "enabled"; | |
1204 | break; | |
1205 | case PACKET_DISABLE: | |
1206 | support = "disabled"; | |
1207 | break; | |
1208 | case PACKET_SUPPORT_UNKNOWN: | |
1209 | support = "unknown"; | |
1210 | break; | |
1211 | } | |
1212 | switch (config->detect) | |
1213 | { | |
7f19b9a2 | 1214 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1215 | printf_filtered (_("Support for the `%s' packet " |
1216 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1217 | config->name, support); |
5a2468f5 | 1218 | break; |
7f19b9a2 AC |
1219 | case AUTO_BOOLEAN_TRUE: |
1220 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1221 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1222 | config->name, support); | |
8e248173 | 1223 | break; |
5a2468f5 JM |
1224 | } |
1225 | } | |
1226 | ||
1227 | static void | |
bb572ddd DJ |
1228 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1229 | const char *title, int legacy) | |
d471ea57 | 1230 | { |
5a2468f5 JM |
1231 | char *set_doc; |
1232 | char *show_doc; | |
d471ea57 | 1233 | char *cmd_name; |
3ed07be4 | 1234 | |
5a2468f5 JM |
1235 | config->name = name; |
1236 | config->title = title; | |
b435e160 AC |
1237 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1238 | name, title); | |
3e43a32a MS |
1239 | show_doc = xstrprintf ("Show current use of remote " |
1240 | "protocol `%s' (%s) packet", | |
b435e160 | 1241 | name, title); |
d471ea57 | 1242 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1243 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1244 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1245 | &config->detect, set_doc, |
1246 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1247 | NULL, |
bb572ddd DJ |
1248 | show_remote_protocol_packet_cmd, |
1249 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1250 | /* The command code copies the documentation strings. */ |
1251 | xfree (set_doc); | |
1252 | xfree (show_doc); | |
23860348 | 1253 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1254 | if (legacy) |
1255 | { | |
1256 | char *legacy_name; | |
a744cf53 | 1257 | |
b435e160 | 1258 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1259 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1260 | &remote_set_cmdlist); |
d471ea57 | 1261 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1262 | &remote_show_cmdlist); |
d471ea57 | 1263 | } |
5a2468f5 JM |
1264 | } |
1265 | ||
d471ea57 | 1266 | static enum packet_result |
a76d924d | 1267 | packet_check_result (const char *buf) |
5a2468f5 | 1268 | { |
d471ea57 | 1269 | if (buf[0] != '\0') |
5a2468f5 | 1270 | { |
d471ea57 | 1271 | /* The stub recognized the packet request. Check that the |
23860348 | 1272 | operation succeeded. */ |
a76d924d DJ |
1273 | if (buf[0] == 'E' |
1274 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1275 | && buf[3] == '\0') | |
1276 | /* "Enn" - definitly an error. */ | |
1277 | return PACKET_ERROR; | |
1278 | ||
1279 | /* Always treat "E." as an error. This will be used for | |
1280 | more verbose error messages, such as E.memtypes. */ | |
1281 | if (buf[0] == 'E' && buf[1] == '.') | |
1282 | return PACKET_ERROR; | |
1283 | ||
1284 | /* The packet may or may not be OK. Just assume it is. */ | |
1285 | return PACKET_OK; | |
1286 | } | |
1287 | else | |
1288 | /* The stub does not support the packet. */ | |
1289 | return PACKET_UNKNOWN; | |
1290 | } | |
1291 | ||
1292 | static enum packet_result | |
1293 | packet_ok (const char *buf, struct packet_config *config) | |
1294 | { | |
1295 | enum packet_result result; | |
1296 | ||
4082afcc PA |
1297 | if (config->detect != AUTO_BOOLEAN_TRUE |
1298 | && config->support == PACKET_DISABLE) | |
1299 | internal_error (__FILE__, __LINE__, | |
1300 | _("packet_ok: attempt to use a disabled packet")); | |
1301 | ||
a76d924d DJ |
1302 | result = packet_check_result (buf); |
1303 | switch (result) | |
1304 | { | |
1305 | case PACKET_OK: | |
1306 | case PACKET_ERROR: | |
1307 | /* The stub recognized the packet request. */ | |
4082afcc | 1308 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1309 | { |
d471ea57 AC |
1310 | if (remote_debug) |
1311 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1312 | "Packet %s (%s) is supported\n", |
1313 | config->name, config->title); | |
d471ea57 | 1314 | config->support = PACKET_ENABLE; |
d471ea57 | 1315 | } |
a76d924d DJ |
1316 | break; |
1317 | case PACKET_UNKNOWN: | |
23860348 | 1318 | /* The stub does not support the packet. */ |
4082afcc PA |
1319 | if (config->detect == AUTO_BOOLEAN_AUTO |
1320 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1321 | { |
4082afcc PA |
1322 | /* If the stub previously indicated that the packet was |
1323 | supported then there is a protocol error. */ | |
1324 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1325 | config->name, config->title); | |
1326 | } | |
1327 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1328 | { | |
1329 | /* The user set it wrong. */ | |
1330 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1331 | config->name, config->title); | |
d471ea57 | 1332 | } |
4082afcc PA |
1333 | |
1334 | if (remote_debug) | |
1335 | fprintf_unfiltered (gdb_stdlog, | |
1336 | "Packet %s (%s) is NOT supported\n", | |
1337 | config->name, config->title); | |
1338 | config->support = PACKET_DISABLE; | |
a76d924d | 1339 | break; |
5a2468f5 | 1340 | } |
a76d924d DJ |
1341 | |
1342 | return result; | |
5a2468f5 JM |
1343 | } |
1344 | ||
444abaca DJ |
1345 | enum { |
1346 | PACKET_vCont = 0, | |
1347 | PACKET_X, | |
1348 | PACKET_qSymbol, | |
1349 | PACKET_P, | |
1350 | PACKET_p, | |
1351 | PACKET_Z0, | |
1352 | PACKET_Z1, | |
1353 | PACKET_Z2, | |
1354 | PACKET_Z3, | |
1355 | PACKET_Z4, | |
15a201c8 | 1356 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1357 | PACKET_vFile_open, |
1358 | PACKET_vFile_pread, | |
1359 | PACKET_vFile_pwrite, | |
1360 | PACKET_vFile_close, | |
1361 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1362 | PACKET_vFile_readlink, |
0a93529c | 1363 | PACKET_vFile_fstat, |
0876f84a | 1364 | PACKET_qXfer_auxv, |
23181151 | 1365 | PACKET_qXfer_features, |
c78fa86a | 1366 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1367 | PACKET_qXfer_libraries, |
2268b414 | 1368 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1369 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1370 | PACKET_qXfer_spu_read, |
1371 | PACKET_qXfer_spu_write, | |
07e059b5 | 1372 | PACKET_qXfer_osdata, |
dc146f7c | 1373 | PACKET_qXfer_threads, |
0fb4aa4b | 1374 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1375 | PACKET_qXfer_traceframe_info, |
169081d0 | 1376 | PACKET_qXfer_uib, |
711e434b | 1377 | PACKET_qGetTIBAddr, |
444abaca | 1378 | PACKET_qGetTLSAddr, |
be2a5f71 | 1379 | PACKET_qSupported, |
bd3eecc3 | 1380 | PACKET_qTStatus, |
89be2091 | 1381 | PACKET_QPassSignals, |
9b224c5e | 1382 | PACKET_QProgramSignals, |
936d2992 | 1383 | PACKET_qCRC, |
08388c79 | 1384 | PACKET_qSearch_memory, |
2d717e4f DJ |
1385 | PACKET_vAttach, |
1386 | PACKET_vRun, | |
a6f3e723 | 1387 | PACKET_QStartNoAckMode, |
82f73884 | 1388 | PACKET_vKill, |
4aa995e1 PA |
1389 | PACKET_qXfer_siginfo_read, |
1390 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1391 | PACKET_qAttached, |
4082afcc PA |
1392 | |
1393 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1394 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1395 | |
1396 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1397 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1398 | |
1399 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1400 | PACKET_BreakpointCommands, |
4082afcc PA |
1401 | |
1402 | /* Support for fast tracepoints. */ | |
7a697b8d | 1403 | PACKET_FastTracepoints, |
4082afcc PA |
1404 | |
1405 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1406 | PACKET_StaticTracepoints, |
4082afcc PA |
1407 | |
1408 | /* Support for installing tracepoints while a trace experiment is | |
1409 | running. */ | |
1e4d1764 | 1410 | PACKET_InstallInTrace, |
4082afcc | 1411 | |
40ab02ce MS |
1412 | PACKET_bc, |
1413 | PACKET_bs, | |
409873ef | 1414 | PACKET_TracepointSource, |
d914c394 | 1415 | PACKET_QAllow, |
78d85199 | 1416 | PACKET_qXfer_fdpic, |
03583c20 | 1417 | PACKET_QDisableRandomization, |
d1feda86 | 1418 | PACKET_QAgent, |
f6f899bf | 1419 | PACKET_QTBuffer_size, |
9accd112 MM |
1420 | PACKET_Qbtrace_off, |
1421 | PACKET_Qbtrace_bts, | |
b20a6524 | 1422 | PACKET_Qbtrace_pt, |
9accd112 | 1423 | PACKET_qXfer_btrace, |
4082afcc PA |
1424 | |
1425 | /* Support for the QNonStop packet. */ | |
1426 | PACKET_QNonStop, | |
1427 | ||
1428 | /* Support for multi-process extensions. */ | |
1429 | PACKET_multiprocess_feature, | |
1430 | ||
1431 | /* Support for enabling and disabling tracepoints while a trace | |
1432 | experiment is running. */ | |
1433 | PACKET_EnableDisableTracepoints_feature, | |
1434 | ||
1435 | /* Support for collecting strings using the tracenz bytecode. */ | |
1436 | PACKET_tracenz_feature, | |
1437 | ||
1438 | /* Support for continuing to run a trace experiment while GDB is | |
1439 | disconnected. */ | |
1440 | PACKET_DisconnectedTracing_feature, | |
1441 | ||
1442 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1443 | PACKET_augmented_libraries_svr4_read_feature, | |
1444 | ||
f4abbc16 MM |
1445 | /* Support for the qXfer:btrace-conf:read packet. */ |
1446 | PACKET_qXfer_btrace_conf, | |
1447 | ||
d33501a5 MM |
1448 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1449 | PACKET_Qbtrace_conf_bts_size, | |
1450 | ||
f7e6eed5 PA |
1451 | /* Support for swbreak+ feature. */ |
1452 | PACKET_swbreak_feature, | |
1453 | ||
1454 | /* Support for hwbreak+ feature. */ | |
1455 | PACKET_hwbreak_feature, | |
1456 | ||
89245bc0 DB |
1457 | /* Support for fork events. */ |
1458 | PACKET_fork_event_feature, | |
1459 | ||
1460 | /* Support for vfork events. */ | |
1461 | PACKET_vfork_event_feature, | |
1462 | ||
b20a6524 MM |
1463 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1464 | PACKET_Qbtrace_conf_pt_size, | |
1465 | ||
94585166 DB |
1466 | /* Support for exec events. */ |
1467 | PACKET_exec_event_feature, | |
1468 | ||
444abaca DJ |
1469 | PACKET_MAX |
1470 | }; | |
506fb367 | 1471 | |
444abaca | 1472 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1473 | |
f7e6eed5 PA |
1474 | /* Returns the packet's corresponding "set remote foo-packet" command |
1475 | state. See struct packet_config for more details. */ | |
1476 | ||
1477 | static enum auto_boolean | |
1478 | packet_set_cmd_state (int packet) | |
1479 | { | |
1480 | return remote_protocol_packets[packet].detect; | |
1481 | } | |
1482 | ||
4082afcc PA |
1483 | /* Returns whether a given packet or feature is supported. This takes |
1484 | into account the state of the corresponding "set remote foo-packet" | |
1485 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1486 | |
4082afcc PA |
1487 | static enum packet_support |
1488 | packet_config_support (struct packet_config *config) | |
1489 | { | |
1490 | switch (config->detect) | |
444abaca | 1491 | { |
4082afcc PA |
1492 | case AUTO_BOOLEAN_TRUE: |
1493 | return PACKET_ENABLE; | |
1494 | case AUTO_BOOLEAN_FALSE: | |
1495 | return PACKET_DISABLE; | |
1496 | case AUTO_BOOLEAN_AUTO: | |
1497 | return config->support; | |
1498 | default: | |
1499 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1500 | } |
4082afcc PA |
1501 | } |
1502 | ||
1503 | /* Same as packet_config_support, but takes the packet's enum value as | |
1504 | argument. */ | |
1505 | ||
1506 | static enum packet_support | |
1507 | packet_support (int packet) | |
1508 | { | |
1509 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1510 | ||
1511 | return packet_config_support (config); | |
dc8acb97 MS |
1512 | } |
1513 | ||
5a2468f5 | 1514 | static void |
444abaca DJ |
1515 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1516 | struct cmd_list_element *c, | |
1517 | const char *value) | |
5a2468f5 | 1518 | { |
444abaca | 1519 | struct packet_config *packet; |
5a2468f5 | 1520 | |
444abaca DJ |
1521 | for (packet = remote_protocol_packets; |
1522 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1523 | packet++) | |
1524 | { | |
1525 | if (&packet->detect == c->var) | |
1526 | { | |
1527 | show_packet_config_cmd (packet); | |
1528 | return; | |
1529 | } | |
1530 | } | |
9b20d036 | 1531 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1532 | c->name); |
5a2468f5 JM |
1533 | } |
1534 | ||
d471ea57 AC |
1535 | /* Should we try one of the 'Z' requests? */ |
1536 | ||
1537 | enum Z_packet_type | |
1538 | { | |
1539 | Z_PACKET_SOFTWARE_BP, | |
1540 | Z_PACKET_HARDWARE_BP, | |
1541 | Z_PACKET_WRITE_WP, | |
1542 | Z_PACKET_READ_WP, | |
1543 | Z_PACKET_ACCESS_WP, | |
1544 | NR_Z_PACKET_TYPES | |
1545 | }; | |
96baa820 | 1546 | |
d471ea57 | 1547 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1548 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1549 | |
7f19b9a2 | 1550 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1551 | |
1552 | static void | |
fba45db2 KB |
1553 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1554 | struct cmd_list_element *c) | |
96baa820 | 1555 | { |
d471ea57 | 1556 | int i; |
a744cf53 | 1557 | |
d471ea57 | 1558 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1559 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1560 | } |
1561 | ||
1562 | static void | |
08546159 AC |
1563 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1564 | struct cmd_list_element *c, | |
1565 | const char *value) | |
96baa820 | 1566 | { |
d471ea57 | 1567 | int i; |
a744cf53 | 1568 | |
d471ea57 AC |
1569 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1570 | { | |
444abaca | 1571 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1572 | } |
96baa820 JM |
1573 | } |
1574 | ||
4082afcc PA |
1575 | /* Returns true if the multi-process extensions are in effect. */ |
1576 | ||
1577 | static int | |
1578 | remote_multi_process_p (struct remote_state *rs) | |
1579 | { | |
1580 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1581 | } | |
1582 | ||
de0d863e DB |
1583 | /* Returns true if fork events are supported. */ |
1584 | ||
1585 | static int | |
1586 | remote_fork_event_p (struct remote_state *rs) | |
1587 | { | |
1588 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1589 | } | |
1590 | ||
c269dbdb DB |
1591 | /* Returns true if vfork events are supported. */ |
1592 | ||
1593 | static int | |
1594 | remote_vfork_event_p (struct remote_state *rs) | |
1595 | { | |
1596 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1597 | } | |
1598 | ||
cbb8991c DB |
1599 | /* Insert fork catchpoint target routine. If fork events are enabled |
1600 | then return success, nothing more to do. */ | |
1601 | ||
1602 | static int | |
1603 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1604 | { | |
1605 | struct remote_state *rs = get_remote_state (); | |
1606 | ||
1607 | return !remote_fork_event_p (rs); | |
1608 | } | |
1609 | ||
1610 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1611 | return success. */ | |
1612 | ||
1613 | static int | |
1614 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1615 | { | |
1616 | return 0; | |
1617 | } | |
1618 | ||
1619 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1620 | then return success, nothing more to do. */ | |
1621 | ||
1622 | static int | |
1623 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1624 | { | |
1625 | struct remote_state *rs = get_remote_state (); | |
1626 | ||
1627 | return !remote_vfork_event_p (rs); | |
1628 | } | |
1629 | ||
1630 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1631 | return success. */ | |
1632 | ||
1633 | static int | |
1634 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1635 | { | |
1636 | return 0; | |
1637 | } | |
1638 | ||
23860348 | 1639 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1640 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1641 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1642 | |
74531fed PA |
1643 | \f |
1644 | /* Asynchronous signal handle registered as event loop source for | |
1645 | when we have pending events ready to be passed to the core. */ | |
1646 | ||
1647 | static struct async_event_handler *remote_async_inferior_event_token; | |
1648 | ||
c906108c SS |
1649 | \f |
1650 | ||
79d7f229 PA |
1651 | static ptid_t magic_null_ptid; |
1652 | static ptid_t not_sent_ptid; | |
1653 | static ptid_t any_thread_ptid; | |
1654 | ||
0b16c5cf PA |
1655 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1656 | detach instead of killing it when bailing out). */ | |
1657 | ||
1658 | static int | |
1659 | remote_query_attached (int pid) | |
1660 | { | |
1661 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1662 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1663 | |
4082afcc | 1664 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1665 | return 0; |
1666 | ||
1667 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1668 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1669 | else |
bba74b36 | 1670 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1671 | |
1672 | putpkt (rs->buf); | |
1673 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1674 | ||
1675 | switch (packet_ok (rs->buf, | |
1554e9be | 1676 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1677 | { |
1678 | case PACKET_OK: | |
1679 | if (strcmp (rs->buf, "1") == 0) | |
1680 | return 1; | |
1681 | break; | |
1682 | case PACKET_ERROR: | |
1683 | warning (_("Remote failure reply: %s"), rs->buf); | |
1684 | break; | |
1685 | case PACKET_UNKNOWN: | |
1686 | break; | |
1687 | } | |
1688 | ||
1689 | return 0; | |
1690 | } | |
1691 | ||
49c62f2e PA |
1692 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1693 | has been invented by GDB, instead of reported by the target. Since | |
1694 | we can be connected to a remote system before before knowing about | |
1695 | any inferior, mark the target with execution when we find the first | |
1696 | inferior. If ATTACHED is 1, then we had just attached to this | |
1697 | inferior. If it is 0, then we just created this inferior. If it | |
1698 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1699 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1700 | attempt to open this inferior's executable as the main executable | |
1701 | if no main executable is open already. */ | |
1941c569 PA |
1702 | |
1703 | static struct inferior * | |
1b6e6f5c GB |
1704 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1705 | int try_open_exec) | |
1941c569 | 1706 | { |
1941c569 PA |
1707 | struct inferior *inf; |
1708 | ||
0b16c5cf PA |
1709 | /* Check whether this process we're learning about is to be |
1710 | considered attached, or if is to be considered to have been | |
1711 | spawned by the stub. */ | |
1712 | if (attached == -1) | |
1713 | attached = remote_query_attached (pid); | |
1714 | ||
f5656ead | 1715 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1716 | { |
1717 | /* If the target shares code across all inferiors, then every | |
1718 | attach adds a new inferior. */ | |
1719 | inf = add_inferior (pid); | |
1720 | ||
1721 | /* ... and every inferior is bound to the same program space. | |
1722 | However, each inferior may still have its own address | |
1723 | space. */ | |
1724 | inf->aspace = maybe_new_address_space (); | |
1725 | inf->pspace = current_program_space; | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | /* In the traditional debugging scenario, there's a 1-1 match | |
1730 | between program/address spaces. We simply bind the inferior | |
1731 | to the program space's address space. */ | |
1732 | inf = current_inferior (); | |
1733 | inferior_appeared (inf, pid); | |
1734 | } | |
1941c569 | 1735 | |
0b16c5cf | 1736 | inf->attach_flag = attached; |
49c62f2e | 1737 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1738 | |
1b6e6f5c GB |
1739 | /* If no main executable is currently open then attempt to |
1740 | open the file that was executed to create this inferior. */ | |
835205d0 | 1741 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1742 | exec_file_locate_attach (pid, 1); |
1743 | ||
1941c569 PA |
1744 | return inf; |
1745 | } | |
1746 | ||
1747 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1748 | according to RUNNING. */ | |
1749 | ||
c906108c | 1750 | static void |
1941c569 | 1751 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1752 | { |
b7ea362b PA |
1753 | struct remote_state *rs = get_remote_state (); |
1754 | ||
1755 | /* GDB historically didn't pull threads in the initial connection | |
1756 | setup. If the remote target doesn't even have a concept of | |
1757 | threads (e.g., a bare-metal target), even if internally we | |
1758 | consider that a single-threaded target, mentioning a new thread | |
1759 | might be confusing to the user. Be silent then, preserving the | |
1760 | age old behavior. */ | |
1761 | if (rs->starting_up) | |
1762 | add_thread_silent (ptid); | |
1763 | else | |
1764 | add_thread (ptid); | |
1941c569 PA |
1765 | |
1766 | set_executing (ptid, running); | |
1767 | set_running (ptid, running); | |
1768 | } | |
1769 | ||
1770 | /* Come here when we learn about a thread id from the remote target. | |
1771 | It may be the first time we hear about such thread, so take the | |
1772 | opportunity to add it to GDB's thread list. In case this is the | |
1773 | first time we're noticing its corresponding inferior, add it to | |
1774 | GDB's inferior list as well. */ | |
1775 | ||
1776 | static void | |
1777 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1778 | { | |
c906108c SS |
1779 | /* If this is a new thread, add it to GDB's thread list. |
1780 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1781 | |
1782 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1783 | { | |
1784 | /* We're seeing an event on a thread id we knew had exited. | |
1785 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1786 | remote_add_thread (currthread, running); |
82f73884 PA |
1787 | return; |
1788 | } | |
1789 | ||
79d7f229 | 1790 | if (!in_thread_list (currthread)) |
c0a2216e | 1791 | { |
1941c569 | 1792 | struct inferior *inf = NULL; |
bad34192 | 1793 | int pid = ptid_get_pid (currthread); |
1941c569 | 1794 | |
bad34192 PA |
1795 | if (ptid_is_pid (inferior_ptid) |
1796 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1797 | { |
1798 | /* inferior_ptid has no thread member yet. This can happen | |
1799 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1800 | stub doesn't support qC. This is the first stop reported | |
1801 | after an attach, so this is the main thread. Update the | |
1802 | ptid in the thread list. */ | |
bad34192 PA |
1803 | if (in_thread_list (pid_to_ptid (pid))) |
1804 | thread_change_ptid (inferior_ptid, currthread); | |
1805 | else | |
1806 | { | |
1807 | remote_add_thread (currthread, running); | |
1808 | inferior_ptid = currthread; | |
1809 | } | |
dc146f7c | 1810 | return; |
c0a2216e | 1811 | } |
82f73884 PA |
1812 | |
1813 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1814 | { |
1815 | /* inferior_ptid is not set yet. This can happen with the | |
1816 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1817 | doesn't support qC. This is the first stop reported | |
1818 | after an attach, so this is the main thread. Update the | |
1819 | ptid in the thread list. */ | |
dc146f7c | 1820 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1821 | return; |
c0a2216e | 1822 | } |
82f73884 | 1823 | |
29c87f7f PA |
1824 | /* When connecting to a target remote, or to a target |
1825 | extended-remote which already was debugging an inferior, we | |
1826 | may not know about it yet. Add it before adding its child | |
1827 | thread, so notifications are emitted in a sensible order. */ | |
1828 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1829 | { |
1830 | struct remote_state *rs = get_remote_state (); | |
1831 | int fake_pid_p = !remote_multi_process_p (rs); | |
1832 | ||
1833 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1834 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1835 | } |
29c87f7f | 1836 | |
82f73884 | 1837 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1838 | remote_add_thread (currthread, running); |
1839 | ||
1840 | /* If we found a new inferior, let the common code do whatever | |
1841 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1842 | breakpoints), unless we're just setting up an all-stop |
1843 | connection. */ | |
1941c569 | 1844 | if (inf != NULL) |
b7ea362b PA |
1845 | { |
1846 | struct remote_state *rs = get_remote_state (); | |
1847 | ||
1848 | if (non_stop || !rs->starting_up) | |
1849 | notice_new_inferior (currthread, running, 0); | |
1850 | } | |
c0a2216e | 1851 | } |
c906108c SS |
1852 | } |
1853 | ||
dc146f7c VP |
1854 | /* Return the private thread data, creating it if necessary. */ |
1855 | ||
70221824 | 1856 | static struct private_thread_info * |
dc146f7c VP |
1857 | demand_private_info (ptid_t ptid) |
1858 | { | |
1859 | struct thread_info *info = find_thread_ptid (ptid); | |
1860 | ||
1861 | gdb_assert (info); | |
1862 | ||
fe978cb0 | 1863 | if (!info->priv) |
dc146f7c | 1864 | { |
8d749320 | 1865 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1866 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1867 | info->priv->core = -1; |
1868 | info->priv->extra = 0; | |
dc146f7c VP |
1869 | } |
1870 | ||
fe978cb0 | 1871 | return info->priv; |
dc146f7c VP |
1872 | } |
1873 | ||
74531fed PA |
1874 | /* Call this function as a result of |
1875 | 1) A halt indication (T packet) containing a thread id | |
1876 | 2) A direct query of currthread | |
0df8b418 | 1877 | 3) Successful execution of set thread */ |
74531fed PA |
1878 | |
1879 | static void | |
47f8a51d | 1880 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1881 | { |
47f8a51d | 1882 | rs->general_thread = currthread; |
74531fed PA |
1883 | } |
1884 | ||
89be2091 DJ |
1885 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1886 | it can simply pass through to the inferior without reporting. */ | |
1887 | ||
1888 | static void | |
94bedb42 TT |
1889 | remote_pass_signals (struct target_ops *self, |
1890 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1891 | { |
4082afcc | 1892 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1893 | { |
1894 | char *pass_packet, *p; | |
89be2091 | 1895 | int count = 0, i; |
747dc59d | 1896 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1897 | |
1898 | gdb_assert (numsigs < 256); | |
1899 | for (i = 0; i < numsigs; i++) | |
1900 | { | |
2455069d | 1901 | if (pass_signals[i]) |
89be2091 DJ |
1902 | count++; |
1903 | } | |
1904 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1905 | strcpy (pass_packet, "QPassSignals:"); | |
1906 | p = pass_packet + strlen (pass_packet); | |
1907 | for (i = 0; i < numsigs; i++) | |
1908 | { | |
2455069d | 1909 | if (pass_signals[i]) |
89be2091 DJ |
1910 | { |
1911 | if (i >= 16) | |
1912 | *p++ = tohex (i >> 4); | |
1913 | *p++ = tohex (i & 15); | |
1914 | if (count) | |
1915 | *p++ = ';'; | |
1916 | else | |
1917 | break; | |
1918 | count--; | |
1919 | } | |
1920 | } | |
1921 | *p = 0; | |
747dc59d | 1922 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1923 | { |
89be2091 DJ |
1924 | putpkt (pass_packet); |
1925 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1926 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1927 | if (rs->last_pass_packet) |
1928 | xfree (rs->last_pass_packet); | |
1929 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1930 | } |
1931 | else | |
1932 | xfree (pass_packet); | |
1933 | } | |
1934 | } | |
1935 | ||
9b224c5e PA |
1936 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1937 | signals it should pass through to the inferior when detaching. */ | |
1938 | ||
1939 | static void | |
daf5e9b6 TT |
1940 | remote_program_signals (struct target_ops *self, |
1941 | int numsigs, unsigned char *signals) | |
9b224c5e | 1942 | { |
4082afcc | 1943 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1944 | { |
1945 | char *packet, *p; | |
1946 | int count = 0, i; | |
5e4a05c4 | 1947 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1948 | |
1949 | gdb_assert (numsigs < 256); | |
1950 | for (i = 0; i < numsigs; i++) | |
1951 | { | |
1952 | if (signals[i]) | |
1953 | count++; | |
1954 | } | |
1955 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1956 | strcpy (packet, "QProgramSignals:"); | |
1957 | p = packet + strlen (packet); | |
1958 | for (i = 0; i < numsigs; i++) | |
1959 | { | |
1960 | if (signal_pass_state (i)) | |
1961 | { | |
1962 | if (i >= 16) | |
1963 | *p++ = tohex (i >> 4); | |
1964 | *p++ = tohex (i & 15); | |
1965 | if (count) | |
1966 | *p++ = ';'; | |
1967 | else | |
1968 | break; | |
1969 | count--; | |
1970 | } | |
1971 | } | |
1972 | *p = 0; | |
5e4a05c4 TT |
1973 | if (!rs->last_program_signals_packet |
1974 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1975 | { |
9b224c5e PA |
1976 | putpkt (packet); |
1977 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1978 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1979 | xfree (rs->last_program_signals_packet); |
1980 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1981 | } |
1982 | else | |
1983 | xfree (packet); | |
1984 | } | |
1985 | } | |
1986 | ||
79d7f229 PA |
1987 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1988 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1989 | thread. If GEN is set, set the general thread, if not, then set | |
1990 | the step/continue thread. */ | |
c906108c | 1991 | static void |
79d7f229 | 1992 | set_thread (struct ptid ptid, int gen) |
c906108c | 1993 | { |
d01949b6 | 1994 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1995 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1996 | char *buf = rs->buf; |
79d7f229 | 1997 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1998 | |
79d7f229 | 1999 | if (ptid_equal (state, ptid)) |
c906108c SS |
2000 | return; |
2001 | ||
79d7f229 PA |
2002 | *buf++ = 'H'; |
2003 | *buf++ = gen ? 'g' : 'c'; | |
2004 | if (ptid_equal (ptid, magic_null_ptid)) | |
2005 | xsnprintf (buf, endbuf - buf, "0"); | |
2006 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2007 | xsnprintf (buf, endbuf - buf, "0"); | |
2008 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2009 | xsnprintf (buf, endbuf - buf, "-1"); | |
2010 | else | |
82f73884 | 2011 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2012 | putpkt (rs->buf); |
6d820c5c | 2013 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2014 | if (gen) |
47f8a51d | 2015 | rs->general_thread = ptid; |
c906108c | 2016 | else |
47f8a51d | 2017 | rs->continue_thread = ptid; |
c906108c | 2018 | } |
79d7f229 PA |
2019 | |
2020 | static void | |
2021 | set_general_thread (struct ptid ptid) | |
2022 | { | |
2023 | set_thread (ptid, 1); | |
2024 | } | |
2025 | ||
2026 | static void | |
2027 | set_continue_thread (struct ptid ptid) | |
2028 | { | |
2029 | set_thread (ptid, 0); | |
2030 | } | |
2031 | ||
3c9c4b83 PA |
2032 | /* Change the remote current process. Which thread within the process |
2033 | ends up selected isn't important, as long as it is the same process | |
2034 | as what INFERIOR_PTID points to. | |
2035 | ||
2036 | This comes from that fact that there is no explicit notion of | |
2037 | "selected process" in the protocol. The selected process for | |
2038 | general operations is the process the selected general thread | |
2039 | belongs to. */ | |
2040 | ||
2041 | static void | |
2042 | set_general_process (void) | |
2043 | { | |
2044 | struct remote_state *rs = get_remote_state (); | |
2045 | ||
2046 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 2047 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
2048 | return; |
2049 | ||
2050 | /* We only need to change the remote current thread if it's pointing | |
2051 | at some other process. */ | |
47f8a51d | 2052 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2053 | set_general_thread (inferior_ptid); |
2054 | } | |
2055 | ||
c906108c | 2056 | \f |
7d1a114c PA |
2057 | /* Return nonzero if this is the main thread that we made up ourselves |
2058 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2059 | |
2060 | static int | |
7d1a114c | 2061 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2062 | { |
6d820c5c | 2063 | struct remote_state *rs = get_remote_state (); |
82f73884 | 2064 | char *p, *endp; |
c906108c | 2065 | |
c0a2216e PA |
2066 | if (ptid_equal (ptid, magic_null_ptid)) |
2067 | /* The main thread is always alive. */ | |
2068 | return 1; | |
2069 | ||
ba348170 | 2070 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2071 | /* The main thread is always alive. This can happen after a |
2072 | vAttach, if the remote side doesn't support | |
2073 | multi-threading. */ | |
2074 | return 1; | |
2075 | ||
7d1a114c PA |
2076 | return 0; |
2077 | } | |
2078 | ||
2079 | /* Return nonzero if the thread PTID is still alive on the remote | |
2080 | system. */ | |
2081 | ||
2082 | static int | |
2083 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2084 | { | |
2085 | struct remote_state *rs = get_remote_state (); | |
2086 | char *p, *endp; | |
2087 | ||
2088 | /* Check if this is a thread that we made up ourselves to model | |
2089 | non-threaded targets as single-threaded. */ | |
2090 | if (remote_thread_always_alive (ops, ptid)) | |
2091 | return 1; | |
2092 | ||
82f73884 PA |
2093 | p = rs->buf; |
2094 | endp = rs->buf + get_remote_packet_size (); | |
2095 | ||
2096 | *p++ = 'T'; | |
2097 | write_ptid (p, endp, ptid); | |
2098 | ||
2e9f7625 | 2099 | putpkt (rs->buf); |
6d820c5c | 2100 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2101 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2102 | } |
2103 | ||
2104 | /* About these extended threadlist and threadinfo packets. They are | |
2105 | variable length packets but, the fields within them are often fixed | |
2106 | length. They are redundent enough to send over UDP as is the | |
2107 | remote protocol in general. There is a matching unit test module | |
2108 | in libstub. */ | |
2109 | ||
23860348 | 2110 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2111 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2112 | changable. */ |
cce74817 JM |
2113 | |
2114 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2115 | Plan to fix this. */ |
cce74817 | 2116 | |
23860348 | 2117 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2118 | |
9d1f7ab2 | 2119 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2120 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2121 | |
2122 | struct gdb_ext_thread_info | |
c5aa993b | 2123 | { |
23860348 | 2124 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2125 | int active; /* Has state interesting to GDB? |
23860348 | 2126 | regs, stack. */ |
2bc416ba | 2127 | char display[256]; /* Brief state display, name, |
cedea757 | 2128 | blocked/suspended. */ |
23860348 | 2129 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2130 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2131 | whatever. */ |
c5aa993b | 2132 | }; |
cce74817 JM |
2133 | |
2134 | /* The volume of remote transfers can be limited by submitting | |
2135 | a mask containing bits specifying the desired information. | |
2136 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2137 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2138 | |
2139 | #define TAG_THREADID 1 | |
2140 | #define TAG_EXISTS 2 | |
2141 | #define TAG_DISPLAY 4 | |
2142 | #define TAG_THREADNAME 8 | |
c5aa993b | 2143 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2144 | |
23860348 | 2145 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2146 | |
a14ed312 | 2147 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2148 | |
a14ed312 | 2149 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2150 | |
a14ed312 | 2151 | static char *pack_int (char *buf, int value); |
cce74817 | 2152 | |
a14ed312 | 2153 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2154 | |
a14ed312 | 2155 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2156 | |
23860348 | 2157 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2158 | |
23860348 | 2159 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2160 | |
23860348 | 2161 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2162 | |
23860348 | 2163 | static int threadref_to_int (threadref *ref); |
cce74817 | 2164 | |
23860348 | 2165 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2166 | |
23860348 | 2167 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2168 | |
2bc416ba | 2169 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2170 | threadref *id); |
cce74817 | 2171 | |
a14ed312 | 2172 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2173 | threadref *expectedref, |
a14ed312 KB |
2174 | struct gdb_ext_thread_info |
2175 | *info); | |
cce74817 JM |
2176 | |
2177 | ||
2bc416ba | 2178 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2179 | int fieldset, /*TAG mask */ |
a14ed312 | 2180 | struct gdb_ext_thread_info *info); |
cce74817 | 2181 | |
a14ed312 KB |
2182 | static char *pack_threadlist_request (char *pkt, int startflag, |
2183 | int threadcount, | |
23860348 | 2184 | threadref *nextthread); |
cce74817 | 2185 | |
a14ed312 KB |
2186 | static int parse_threadlist_response (char *pkt, |
2187 | int result_limit, | |
23860348 | 2188 | threadref *original_echo, |
2bc416ba | 2189 | threadref *resultlist, |
23860348 | 2190 | int *doneflag); |
cce74817 | 2191 | |
a14ed312 | 2192 | static int remote_get_threadlist (int startflag, |
23860348 | 2193 | threadref *nextthread, |
a14ed312 KB |
2194 | int result_limit, |
2195 | int *done, | |
2bc416ba | 2196 | int *result_count, |
23860348 | 2197 | threadref *threadlist); |
cce74817 | 2198 | |
23860348 | 2199 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2200 | |
a14ed312 KB |
2201 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2202 | void *context, int looplimit); | |
cce74817 | 2203 | |
23860348 | 2204 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2205 | |
82f73884 PA |
2206 | |
2207 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2208 | buffer we're allowed to write to. Returns | |
2209 | BUF+CHARACTERS_WRITTEN. */ | |
2210 | ||
2211 | static char * | |
2212 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2213 | { | |
2214 | int pid, tid; | |
2215 | struct remote_state *rs = get_remote_state (); | |
2216 | ||
2217 | if (remote_multi_process_p (rs)) | |
2218 | { | |
2219 | pid = ptid_get_pid (ptid); | |
2220 | if (pid < 0) | |
2221 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2222 | else | |
2223 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2224 | } | |
ba348170 | 2225 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2226 | if (tid < 0) |
2227 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2228 | else | |
2229 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2230 | ||
2231 | return buf; | |
2232 | } | |
2233 | ||
2234 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2235 | passed the last parsed char. Returns null_ptid on error. */ | |
2236 | ||
2237 | static ptid_t | |
2238 | read_ptid (char *buf, char **obuf) | |
2239 | { | |
2240 | char *p = buf; | |
2241 | char *pp; | |
2242 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2243 | |
2244 | if (*p == 'p') | |
2245 | { | |
2246 | /* Multi-process ptid. */ | |
2247 | pp = unpack_varlen_hex (p + 1, &pid); | |
2248 | if (*pp != '.') | |
b37520b6 | 2249 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2250 | |
2251 | p = pp; | |
2252 | pp = unpack_varlen_hex (p + 1, &tid); | |
2253 | if (obuf) | |
2254 | *obuf = pp; | |
ba348170 | 2255 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2256 | } |
2257 | ||
2258 | /* No multi-process. Just a tid. */ | |
2259 | pp = unpack_varlen_hex (p, &tid); | |
2260 | ||
c9f35b34 KB |
2261 | /* Return null_ptid when no thread id is found. */ |
2262 | if (p == pp) | |
2263 | { | |
2264 | if (obuf) | |
2265 | *obuf = pp; | |
2266 | return null_ptid; | |
2267 | } | |
2268 | ||
82f73884 | 2269 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2270 | what's in inferior_ptid, unless it's null at this point. If so, |
2271 | then since there's no way to know the pid of the reported | |
2272 | threads, use the magic number. */ | |
2273 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2274 | pid = ptid_get_pid (magic_null_ptid); | |
2275 | else | |
2276 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2277 | |
2278 | if (obuf) | |
2279 | *obuf = pp; | |
ba348170 | 2280 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2281 | } |
2282 | ||
c906108c | 2283 | static int |
fba45db2 | 2284 | stubhex (int ch) |
c906108c SS |
2285 | { |
2286 | if (ch >= 'a' && ch <= 'f') | |
2287 | return ch - 'a' + 10; | |
2288 | if (ch >= '0' && ch <= '9') | |
2289 | return ch - '0'; | |
2290 | if (ch >= 'A' && ch <= 'F') | |
2291 | return ch - 'A' + 10; | |
2292 | return -1; | |
2293 | } | |
2294 | ||
2295 | static int | |
fba45db2 | 2296 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2297 | { |
2298 | int nibble; | |
2299 | int retval = 0; | |
2300 | ||
2301 | while (fieldlength) | |
2302 | { | |
2303 | nibble = stubhex (*buff++); | |
2304 | retval |= nibble; | |
2305 | fieldlength--; | |
2306 | if (fieldlength) | |
2307 | retval = retval << 4; | |
2308 | } | |
2309 | return retval; | |
2310 | } | |
2311 | ||
c906108c | 2312 | static char * |
fba45db2 | 2313 | unpack_nibble (char *buf, int *val) |
c906108c | 2314 | { |
b7589f7d | 2315 | *val = fromhex (*buf++); |
c906108c SS |
2316 | return buf; |
2317 | } | |
2318 | ||
c906108c | 2319 | static char * |
fba45db2 | 2320 | unpack_byte (char *buf, int *value) |
c906108c SS |
2321 | { |
2322 | *value = stub_unpack_int (buf, 2); | |
2323 | return buf + 2; | |
2324 | } | |
2325 | ||
2326 | static char * | |
fba45db2 | 2327 | pack_int (char *buf, int value) |
c906108c SS |
2328 | { |
2329 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2330 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2331 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2332 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2333 | return buf; | |
2334 | } | |
2335 | ||
2336 | static char * | |
fba45db2 | 2337 | unpack_int (char *buf, int *value) |
c906108c SS |
2338 | { |
2339 | *value = stub_unpack_int (buf, 8); | |
2340 | return buf + 8; | |
2341 | } | |
2342 | ||
23860348 | 2343 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2344 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2345 | |
2346 | static char * | |
fba45db2 | 2347 | pack_string (char *pkt, char *string) |
c906108c SS |
2348 | { |
2349 | char ch; | |
2350 | int len; | |
2351 | ||
2352 | len = strlen (string); | |
2353 | if (len > 200) | |
23860348 | 2354 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2355 | pkt = pack_hex_byte (pkt, len); |
2356 | while (len-- > 0) | |
2357 | { | |
2358 | ch = *string++; | |
2359 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2360 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2361 | *pkt++ = ch; |
2362 | } | |
2363 | return pkt; | |
2364 | } | |
2365 | #endif /* 0 (unused) */ | |
2366 | ||
2367 | static char * | |
fba45db2 | 2368 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2369 | { |
2370 | while (length--) | |
2371 | *dest++ = *src++; | |
2372 | *dest = '\0'; | |
2373 | return src; | |
2374 | } | |
2375 | ||
2376 | static char * | |
fba45db2 | 2377 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2378 | { |
2379 | char *limit; | |
2380 | unsigned char *altid; | |
2381 | ||
2382 | altid = (unsigned char *) id; | |
2383 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2384 | while (pkt < limit) | |
2385 | pkt = pack_hex_byte (pkt, *altid++); | |
2386 | return pkt; | |
2387 | } | |
2388 | ||
2389 | ||
2390 | static char * | |
fba45db2 | 2391 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2392 | { |
2393 | char *altref; | |
2394 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2395 | int x, y; | |
2396 | ||
2397 | altref = (char *) id; | |
2398 | ||
2399 | while (inbuf < limit) | |
2400 | { | |
2401 | x = stubhex (*inbuf++); | |
2402 | y = stubhex (*inbuf++); | |
2403 | *altref++ = (x << 4) | y; | |
2404 | } | |
2405 | return inbuf; | |
2406 | } | |
2407 | ||
2408 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2409 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2410 | to use 64bit thread references internally. This is an adapter |
2411 | function. */ | |
2412 | ||
2413 | void | |
fba45db2 | 2414 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2415 | { |
2416 | unsigned char *scan; | |
2417 | ||
2418 | scan = (unsigned char *) id; | |
2419 | { | |
2420 | int i = 4; | |
2421 | while (i--) | |
2422 | *scan++ = 0; | |
2423 | } | |
2424 | *scan++ = (value >> 24) & 0xff; | |
2425 | *scan++ = (value >> 16) & 0xff; | |
2426 | *scan++ = (value >> 8) & 0xff; | |
2427 | *scan++ = (value & 0xff); | |
2428 | } | |
2429 | ||
2430 | static int | |
fba45db2 | 2431 | threadref_to_int (threadref *ref) |
c906108c SS |
2432 | { |
2433 | int i, value = 0; | |
2434 | unsigned char *scan; | |
2435 | ||
cfd77fa1 | 2436 | scan = *ref; |
c906108c SS |
2437 | scan += 4; |
2438 | i = 4; | |
2439 | while (i-- > 0) | |
2440 | value = (value << 8) | ((*scan++) & 0xff); | |
2441 | return value; | |
2442 | } | |
2443 | ||
2444 | static void | |
fba45db2 | 2445 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2446 | { |
2447 | int i; | |
2448 | unsigned char *csrc, *cdest; | |
2449 | ||
2450 | csrc = (unsigned char *) src; | |
2451 | cdest = (unsigned char *) dest; | |
2452 | i = 8; | |
2453 | while (i--) | |
2454 | *cdest++ = *csrc++; | |
2455 | } | |
2456 | ||
2457 | static int | |
fba45db2 | 2458 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2459 | { |
23860348 | 2460 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2461 | #if 0 |
2462 | unsigned char *srcp, *destp; | |
2463 | int i, result; | |
2464 | srcp = (char *) src; | |
2465 | destp = (char *) dest; | |
2466 | ||
2467 | result = 1; | |
2468 | while (i-- > 0) | |
2469 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2470 | return result; | |
2471 | #endif | |
2472 | return 1; | |
2473 | } | |
2474 | ||
2475 | /* | |
c5aa993b JM |
2476 | threadid:1, # always request threadid |
2477 | context_exists:2, | |
2478 | display:4, | |
2479 | unique_name:8, | |
2480 | more_display:16 | |
2481 | */ | |
c906108c SS |
2482 | |
2483 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2484 | ||
2485 | static char * | |
fba45db2 | 2486 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2487 | { |
23860348 MS |
2488 | *pkt++ = 'q'; /* Info Query */ |
2489 | *pkt++ = 'P'; /* process or thread info */ | |
2490 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2491 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2492 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2493 | return pkt; |
2494 | } | |
2495 | ||
23860348 | 2496 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2497 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2498 | add more fields as time goes by. */ |
c906108c | 2499 | |
23860348 | 2500 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2501 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2502 | fetch registers and its stack? */ |
c5aa993b | 2503 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2504 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2505 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2506 | the process. */ |
c906108c SS |
2507 | |
2508 | static int | |
fba45db2 KB |
2509 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2510 | struct gdb_ext_thread_info *info) | |
c906108c | 2511 | { |
d01949b6 | 2512 | struct remote_state *rs = get_remote_state (); |
c906108c | 2513 | int mask, length; |
cfd77fa1 | 2514 | int tag; |
c906108c | 2515 | threadref ref; |
6d820c5c | 2516 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2517 | int retval = 1; |
2518 | ||
23860348 | 2519 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2520 | info->active = 0; |
2521 | info->display[0] = '\0'; | |
2522 | info->shortname[0] = '\0'; | |
2523 | info->more_display[0] = '\0'; | |
2524 | ||
23860348 MS |
2525 | /* Assume the characters indicating the packet type have been |
2526 | stripped. */ | |
c906108c SS |
2527 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2528 | pkt = unpack_threadid (pkt, &ref); | |
2529 | ||
2530 | if (mask == 0) | |
8a3fe4f8 | 2531 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2532 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2533 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2534 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2535 | return 0; |
2536 | } | |
2537 | copy_threadref (&info->threadid, &ref); | |
2538 | ||
23860348 | 2539 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2540 | |
23860348 MS |
2541 | /* Packets are terminated with nulls. */ |
2542 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2543 | { |
2544 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2545 | pkt = unpack_byte (pkt, &length); /* length */ |
2546 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2547 | { |
8a3fe4f8 | 2548 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2549 | retval = 0; |
2550 | break; | |
2551 | } | |
2552 | if (tag == TAG_THREADID) | |
2553 | { | |
2554 | if (length != 16) | |
2555 | { | |
8a3fe4f8 | 2556 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2557 | retval = 0; |
2558 | break; | |
2559 | } | |
2560 | pkt = unpack_threadid (pkt, &ref); | |
2561 | mask = mask & ~TAG_THREADID; | |
2562 | continue; | |
2563 | } | |
2564 | if (tag == TAG_EXISTS) | |
2565 | { | |
2566 | info->active = stub_unpack_int (pkt, length); | |
2567 | pkt += length; | |
2568 | mask = mask & ~(TAG_EXISTS); | |
2569 | if (length > 8) | |
2570 | { | |
8a3fe4f8 | 2571 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2572 | retval = 0; |
2573 | break; | |
2574 | } | |
2575 | continue; | |
2576 | } | |
2577 | if (tag == TAG_THREADNAME) | |
2578 | { | |
2579 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2580 | mask = mask & ~TAG_THREADNAME; | |
2581 | continue; | |
2582 | } | |
2583 | if (tag == TAG_DISPLAY) | |
2584 | { | |
2585 | pkt = unpack_string (pkt, &info->display[0], length); | |
2586 | mask = mask & ~TAG_DISPLAY; | |
2587 | continue; | |
2588 | } | |
2589 | if (tag == TAG_MOREDISPLAY) | |
2590 | { | |
2591 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2592 | mask = mask & ~TAG_MOREDISPLAY; | |
2593 | continue; | |
2594 | } | |
8a3fe4f8 | 2595 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2596 | break; /* Not a tag we know about. */ |
c906108c SS |
2597 | } |
2598 | return retval; | |
2599 | } | |
2600 | ||
2601 | static int | |
fba45db2 KB |
2602 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2603 | struct gdb_ext_thread_info *info) | |
c906108c | 2604 | { |
d01949b6 | 2605 | struct remote_state *rs = get_remote_state (); |
c906108c | 2606 | int result; |
c906108c | 2607 | |
2e9f7625 DJ |
2608 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2609 | putpkt (rs->buf); | |
6d820c5c | 2610 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2611 | |
2612 | if (rs->buf[0] == '\0') | |
2613 | return 0; | |
2614 | ||
2e9f7625 | 2615 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2616 | threadid, info); |
c906108c SS |
2617 | return result; |
2618 | } | |
2619 | ||
c906108c SS |
2620 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2621 | ||
2622 | static char * | |
fba45db2 KB |
2623 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2624 | threadref *nextthread) | |
c906108c SS |
2625 | { |
2626 | *pkt++ = 'q'; /* info query packet */ | |
2627 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2628 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2629 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2630 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2631 | *pkt = '\0'; | |
2632 | return pkt; | |
2633 | } | |
2634 | ||
2635 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2636 | ||
2637 | static int | |
fba45db2 KB |
2638 | parse_threadlist_response (char *pkt, int result_limit, |
2639 | threadref *original_echo, threadref *resultlist, | |
2640 | int *doneflag) | |
c906108c | 2641 | { |
d01949b6 | 2642 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2643 | char *limit; |
2644 | int count, resultcount, done; | |
2645 | ||
2646 | resultcount = 0; | |
2647 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2648 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2649 | /* done parse past here */ |
c906108c SS |
2650 | pkt = unpack_byte (pkt, &count); /* count field */ |
2651 | pkt = unpack_nibble (pkt, &done); | |
2652 | /* The first threadid is the argument threadid. */ | |
2653 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2654 | while ((count-- > 0) && (pkt < limit)) | |
2655 | { | |
2656 | pkt = unpack_threadid (pkt, resultlist++); | |
2657 | if (resultcount++ >= result_limit) | |
2658 | break; | |
2659 | } | |
2660 | if (doneflag) | |
2661 | *doneflag = done; | |
2662 | return resultcount; | |
2663 | } | |
2664 | ||
6dc54d91 PA |
2665 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2666 | qL packet is not supported, 0 on error and 1 on success. */ | |
2667 | ||
c906108c | 2668 | static int |
fba45db2 KB |
2669 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2670 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2671 | { |
d01949b6 | 2672 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2673 | int result = 1; |
2674 | ||
23860348 | 2675 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2676 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2677 | >= get_remote_packet_size ()) | |
ea9c271d | 2678 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2679 | |
6d820c5c DJ |
2680 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2681 | putpkt (rs->buf); | |
2682 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2683 | if (*rs->buf == '\0') |
6dc54d91 PA |
2684 | { |
2685 | /* Packet not supported. */ | |
2686 | return -1; | |
2687 | } | |
2688 | ||
2689 | *result_count = | |
2690 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2691 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2692 | |
0d031856 | 2693 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2694 | { |
23860348 MS |
2695 | /* FIXME: This is a good reason to drop the packet. */ |
2696 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2697 | /* Possabilities : |
2698 | retransmit immediatly - race conditions | |
2699 | retransmit after timeout - yes | |
2700 | exit | |
2701 | wait for packet, then exit | |
2702 | */ | |
8a3fe4f8 | 2703 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2704 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2705 | } |
2706 | if (*result_count <= 0) | |
2707 | { | |
2708 | if (*done != 1) | |
2709 | { | |
8a3fe4f8 | 2710 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2711 | result = 0; |
2712 | } | |
2713 | return result; /* break; */ | |
2714 | } | |
2715 | if (*result_count > result_limit) | |
2716 | { | |
2717 | *result_count = 0; | |
8a3fe4f8 | 2718 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2719 | return 0; |
2720 | } | |
2721 | return result; | |
2722 | } | |
2723 | ||
6dc54d91 PA |
2724 | /* Fetch the list of remote threads, with the qL packet, and call |
2725 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2726 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2727 | STEPFUNCTION returns false. If the packet is not supported, | |
2728 | returns -1. */ | |
c906108c | 2729 | |
c906108c | 2730 | static int |
fba45db2 KB |
2731 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2732 | int looplimit) | |
c906108c | 2733 | { |
0d031856 | 2734 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2735 | int done, i, result_count; |
2736 | int startflag = 1; | |
2737 | int result = 1; | |
2738 | int loopcount = 0; | |
c906108c SS |
2739 | |
2740 | done = 0; | |
2741 | while (!done) | |
2742 | { | |
2743 | if (loopcount++ > looplimit) | |
2744 | { | |
2745 | result = 0; | |
8a3fe4f8 | 2746 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2747 | break; |
2748 | } | |
6dc54d91 PA |
2749 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2750 | MAXTHREADLISTRESULTS, | |
2751 | &done, &result_count, | |
2752 | rs->resultthreadlist); | |
2753 | if (result <= 0) | |
2754 | break; | |
23860348 | 2755 | /* Clear for later iterations. */ |
c906108c SS |
2756 | startflag = 0; |
2757 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2758 | if (result_count >= 1) | |
0d031856 TT |
2759 | copy_threadref (&rs->nextthread, |
2760 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2761 | i = 0; |
2762 | while (result_count--) | |
6dc54d91 PA |
2763 | { |
2764 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2765 | { | |
2766 | result = 0; | |
2767 | break; | |
2768 | } | |
2769 | } | |
c906108c SS |
2770 | } |
2771 | return result; | |
2772 | } | |
2773 | ||
6dc54d91 PA |
2774 | /* A thread found on the remote target. */ |
2775 | ||
2776 | typedef struct thread_item | |
2777 | { | |
2778 | /* The thread's PTID. */ | |
2779 | ptid_t ptid; | |
2780 | ||
2781 | /* The thread's extra info. May be NULL. */ | |
2782 | char *extra; | |
2783 | ||
2784 | /* The core the thread was running on. -1 if not known. */ | |
2785 | int core; | |
2786 | } thread_item_t; | |
2787 | DEF_VEC_O(thread_item_t); | |
2788 | ||
2789 | /* Context passed around to the various methods listing remote | |
2790 | threads. As new threads are found, they're added to the ITEMS | |
2791 | vector. */ | |
2792 | ||
2793 | struct threads_listing_context | |
2794 | { | |
2795 | /* The threads found on the remote target. */ | |
2796 | VEC (thread_item_t) *items; | |
2797 | }; | |
2798 | ||
80134cf5 PA |
2799 | /* Discard the contents of the constructed thread listing context. */ |
2800 | ||
2801 | static void | |
2802 | clear_threads_listing_context (void *p) | |
2803 | { | |
2804 | struct threads_listing_context *context = p; | |
2805 | int i; | |
2806 | struct thread_item *item; | |
2807 | ||
2808 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2809 | xfree (item->extra); | |
2810 | ||
2811 | VEC_free (thread_item_t, context->items); | |
2812 | } | |
2813 | ||
cbb8991c DB |
2814 | /* Remove the thread specified as the related_pid field of WS |
2815 | from the CONTEXT list. */ | |
2816 | ||
2817 | static void | |
2818 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2819 | struct threads_listing_context *context) | |
2820 | { | |
2821 | struct thread_item *item; | |
2822 | int i; | |
2823 | ptid_t child_ptid = ws->value.related_pid; | |
2824 | ||
2825 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2826 | { | |
2827 | if (ptid_equal (item->ptid, child_ptid)) | |
2828 | { | |
2829 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2830 | break; | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | ||
c906108c | 2835 | static int |
6dc54d91 | 2836 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2837 | { |
6dc54d91 PA |
2838 | struct threads_listing_context *context = data; |
2839 | struct thread_item item; | |
79d7f229 | 2840 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2841 | |
6dc54d91 PA |
2842 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2843 | item.core = -1; | |
2844 | item.extra = NULL; | |
2845 | ||
2846 | VEC_safe_push (thread_item_t, context->items, &item); | |
2847 | ||
c906108c SS |
2848 | return 1; /* continue iterator */ |
2849 | } | |
2850 | ||
2851 | #define CRAZY_MAX_THREADS 1000 | |
2852 | ||
39f77062 KB |
2853 | static ptid_t |
2854 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2855 | { |
d01949b6 | 2856 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2857 | |
2858 | putpkt ("qC"); | |
6d820c5c | 2859 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2860 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2861 | { |
2862 | char *obuf; | |
2863 | ptid_t result; | |
2864 | ||
2865 | result = read_ptid (&rs->buf[2], &obuf); | |
2866 | if (*obuf != '\0' && remote_debug) | |
2867 | fprintf_unfiltered (gdb_stdlog, | |
2868 | "warning: garbage in qC reply\n"); | |
2869 | ||
2870 | return result; | |
2871 | } | |
c906108c SS |
2872 | else |
2873 | return oldpid; | |
2874 | } | |
2875 | ||
6dc54d91 | 2876 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2877 | |
6dc54d91 PA |
2878 | static int |
2879 | remote_get_threads_with_ql (struct target_ops *ops, | |
2880 | struct threads_listing_context *context) | |
c906108c | 2881 | { |
6dc54d91 PA |
2882 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2883 | CRAZY_MAX_THREADS) >= 0) | |
2884 | return 1; | |
2885 | ||
2886 | return 0; | |
c906108c SS |
2887 | } |
2888 | ||
dc146f7c VP |
2889 | #if defined(HAVE_LIBEXPAT) |
2890 | ||
dc146f7c VP |
2891 | static void |
2892 | start_thread (struct gdb_xml_parser *parser, | |
2893 | const struct gdb_xml_element *element, | |
2894 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2895 | { | |
6dc54d91 | 2896 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2897 | |
2898 | struct thread_item item; | |
2899 | char *id; | |
3d2c1d41 | 2900 | struct gdb_xml_value *attr; |
dc146f7c | 2901 | |
3d2c1d41 | 2902 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2903 | item.ptid = read_ptid (id, NULL); |
2904 | ||
3d2c1d41 PA |
2905 | attr = xml_find_attribute (attributes, "core"); |
2906 | if (attr != NULL) | |
2907 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2908 | else |
2909 | item.core = -1; | |
2910 | ||
2911 | item.extra = 0; | |
2912 | ||
2913 | VEC_safe_push (thread_item_t, data->items, &item); | |
2914 | } | |
2915 | ||
2916 | static void | |
2917 | end_thread (struct gdb_xml_parser *parser, | |
2918 | const struct gdb_xml_element *element, | |
2919 | void *user_data, const char *body_text) | |
2920 | { | |
6dc54d91 | 2921 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2922 | |
2923 | if (body_text && *body_text) | |
2ae2a0b7 | 2924 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2925 | } |
2926 | ||
2927 | const struct gdb_xml_attribute thread_attributes[] = { | |
2928 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2929 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2930 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2931 | }; | |
2932 | ||
2933 | const struct gdb_xml_element thread_children[] = { | |
2934 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2935 | }; | |
2936 | ||
2937 | const struct gdb_xml_element threads_children[] = { | |
2938 | { "thread", thread_attributes, thread_children, | |
2939 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2940 | start_thread, end_thread }, | |
2941 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2942 | }; | |
2943 | ||
2944 | const struct gdb_xml_element threads_elements[] = { | |
2945 | { "threads", NULL, threads_children, | |
2946 | GDB_XML_EF_NONE, NULL, NULL }, | |
2947 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2948 | }; | |
2949 | ||
2950 | #endif | |
2951 | ||
6dc54d91 | 2952 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2953 | |
6dc54d91 PA |
2954 | static int |
2955 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2956 | struct threads_listing_context *context) | |
0f71a2f6 | 2957 | { |
dc146f7c | 2958 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2959 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2960 | { |
6dc54d91 | 2961 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2962 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2963 | |
6dc54d91 | 2964 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2965 | { |
6dc54d91 PA |
2966 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2967 | threads_elements, xml, context); | |
dc146f7c VP |
2968 | } |
2969 | ||
2970 | do_cleanups (back_to); | |
6dc54d91 | 2971 | return 1; |
dc146f7c VP |
2972 | } |
2973 | #endif | |
2974 | ||
6dc54d91 PA |
2975 | return 0; |
2976 | } | |
2977 | ||
2978 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2979 | ||
2980 | static int | |
2981 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2982 | struct threads_listing_context *context) | |
2983 | { | |
2984 | struct remote_state *rs = get_remote_state (); | |
2985 | ||
b80fafe3 | 2986 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2987 | { |
6dc54d91 PA |
2988 | char *bufp; |
2989 | ||
9d1f7ab2 | 2990 | putpkt ("qfThreadInfo"); |
6d820c5c | 2991 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2992 | bufp = rs->buf; |
9d1f7ab2 | 2993 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2994 | { |
9d1f7ab2 MS |
2995 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2996 | { | |
2997 | do | |
2998 | { | |
6dc54d91 PA |
2999 | struct thread_item item; |
3000 | ||
3001 | item.ptid = read_ptid (bufp, &bufp); | |
3002 | item.core = -1; | |
3003 | item.extra = NULL; | |
3004 | ||
3005 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3006 | } |
3007 | while (*bufp++ == ','); /* comma-separated list */ | |
3008 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3009 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3010 | bufp = rs->buf; |
9d1f7ab2 | 3011 | } |
6dc54d91 PA |
3012 | return 1; |
3013 | } | |
3014 | else | |
3015 | { | |
3016 | /* Packet not recognized. */ | |
3017 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3018 | } |
3019 | } | |
3020 | ||
6dc54d91 PA |
3021 | return 0; |
3022 | } | |
3023 | ||
e8032dde | 3024 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3025 | targets. */ |
3026 | ||
3027 | static void | |
e8032dde | 3028 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
3029 | { |
3030 | struct remote_state *rs = get_remote_state (); | |
3031 | struct threads_listing_context context; | |
3032 | struct cleanup *old_chain; | |
ab970af1 | 3033 | int got_list = 0; |
e8032dde | 3034 | |
6dc54d91 PA |
3035 | context.items = NULL; |
3036 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3037 | ||
3038 | /* We have a few different mechanisms to fetch the thread list. Try | |
3039 | them all, starting with the most preferred one first, falling | |
3040 | back to older methods. */ | |
3041 | if (remote_get_threads_with_qxfer (ops, &context) | |
3042 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3043 | || remote_get_threads_with_ql (ops, &context)) | |
3044 | { | |
3045 | int i; | |
3046 | struct thread_item *item; | |
ab970af1 PA |
3047 | struct thread_info *tp, *tmp; |
3048 | ||
3049 | got_list = 1; | |
3050 | ||
7d1a114c PA |
3051 | if (VEC_empty (thread_item_t, context.items) |
3052 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3053 | { | |
3054 | /* Some targets don't really support threads, but still | |
3055 | reply an (empty) thread list in response to the thread | |
3056 | listing packets, instead of replying "packet not | |
3057 | supported". Exit early so we don't delete the main | |
3058 | thread. */ | |
3059 | do_cleanups (old_chain); | |
3060 | return; | |
3061 | } | |
3062 | ||
ab970af1 PA |
3063 | /* CONTEXT now holds the current thread list on the remote |
3064 | target end. Delete GDB-side threads no longer found on the | |
3065 | target. */ | |
8a06aea7 | 3066 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3067 | { |
ab970af1 PA |
3068 | for (i = 0; |
3069 | VEC_iterate (thread_item_t, context.items, i, item); | |
3070 | ++i) | |
3071 | { | |
3072 | if (ptid_equal (item->ptid, tp->ptid)) | |
3073 | break; | |
3074 | } | |
3075 | ||
3076 | if (i == VEC_length (thread_item_t, context.items)) | |
3077 | { | |
3078 | /* Not found. */ | |
3079 | delete_thread (tp->ptid); | |
3080 | } | |
cbb8991c DB |
3081 | } |
3082 | ||
3083 | /* Remove any unreported fork child threads from CONTEXT so | |
3084 | that we don't interfere with follow fork, which is where | |
3085 | creation of such threads is handled. */ | |
3086 | remove_new_fork_children (&context); | |
74531fed | 3087 | |
ab970af1 | 3088 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3089 | for (i = 0; |
3090 | VEC_iterate (thread_item_t, context.items, i, item); | |
3091 | ++i) | |
3092 | { | |
3093 | if (!ptid_equal (item->ptid, null_ptid)) | |
3094 | { | |
3095 | struct private_thread_info *info; | |
3096 | /* In non-stop mode, we assume new found threads are | |
3097 | running until proven otherwise with a stop reply. In | |
3098 | all-stop, we can only get here if all threads are | |
3099 | stopped. */ | |
3100 | int running = non_stop ? 1 : 0; | |
3101 | ||
3102 | remote_notice_new_inferior (item->ptid, running); | |
3103 | ||
3104 | info = demand_private_info (item->ptid); | |
3105 | info->core = item->core; | |
3106 | info->extra = item->extra; | |
3107 | item->extra = NULL; | |
3108 | } | |
3109 | } | |
3110 | } | |
3111 | ||
ab970af1 PA |
3112 | if (!got_list) |
3113 | { | |
3114 | /* If no thread listing method is supported, then query whether | |
3115 | each known thread is alive, one by one, with the T packet. | |
3116 | If the target doesn't support threads at all, then this is a | |
3117 | no-op. See remote_thread_alive. */ | |
3118 | prune_threads (); | |
3119 | } | |
3120 | ||
6dc54d91 | 3121 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3122 | } |
3123 | ||
802188a7 | 3124 | /* |
9d1f7ab2 MS |
3125 | * Collect a descriptive string about the given thread. |
3126 | * The target may say anything it wants to about the thread | |
3127 | * (typically info about its blocked / runnable state, name, etc.). | |
3128 | * This string will appear in the info threads display. | |
802188a7 | 3129 | * |
9d1f7ab2 MS |
3130 | * Optional: targets are not required to implement this function. |
3131 | */ | |
3132 | ||
3133 | static char * | |
c15906d8 | 3134 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3135 | { |
d01949b6 | 3136 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3137 | int result; |
3138 | int set; | |
3139 | threadref id; | |
3140 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3141 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3142 | int n = 0; /* position in display_buf */ |
3143 | ||
5d93a237 | 3144 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3145 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3146 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3147 | |
60e569b9 | 3148 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3149 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3150 | /* This is the main thread which was added by GDB. The remote |
3151 | server doesn't know about it. */ | |
3152 | return NULL; | |
3153 | ||
4082afcc | 3154 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3155 | { |
3156 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3157 | |
fe978cb0 PA |
3158 | if (info && info->priv) |
3159 | return info->priv->extra; | |
dc146f7c VP |
3160 | else |
3161 | return NULL; | |
3162 | } | |
3163 | ||
b80fafe3 | 3164 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3165 | { |
82f73884 PA |
3166 | char *b = rs->buf; |
3167 | char *endb = rs->buf + get_remote_packet_size (); | |
3168 | ||
3169 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3170 | b += strlen (b); | |
3171 | write_ptid (b, endb, tp->ptid); | |
3172 | ||
2e9f7625 | 3173 | putpkt (rs->buf); |
6d820c5c | 3174 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3175 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3176 | { |
2e9f7625 DJ |
3177 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3178 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3179 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3180 | return display_buf; |
3181 | } | |
0f71a2f6 | 3182 | } |
9d1f7ab2 MS |
3183 | |
3184 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3185 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3186 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3187 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3188 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3189 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3190 | if (threadinfo.active) | |
0f71a2f6 | 3191 | { |
9d1f7ab2 | 3192 | if (*threadinfo.shortname) |
2bc416ba | 3193 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3194 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3195 | if (*threadinfo.display) |
2bc416ba | 3196 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3197 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3198 | if (*threadinfo.more_display) |
2bc416ba | 3199 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3200 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3201 | |
3202 | if (n > 0) | |
c5aa993b | 3203 | { |
23860348 | 3204 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3205 | if (',' == display_buf[n-1]) |
3206 | display_buf[n-1] = ' '; | |
3207 | return display_buf; | |
c5aa993b | 3208 | } |
0f71a2f6 | 3209 | } |
9d1f7ab2 | 3210 | return NULL; |
0f71a2f6 | 3211 | } |
c906108c | 3212 | \f |
c5aa993b | 3213 | |
0fb4aa4b | 3214 | static int |
61fc905d | 3215 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3216 | struct static_tracepoint_marker *marker) |
3217 | { | |
3218 | struct remote_state *rs = get_remote_state (); | |
3219 | char *p = rs->buf; | |
3220 | ||
bba74b36 | 3221 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3222 | p += strlen (p); |
3223 | p += hexnumstr (p, addr); | |
3224 | putpkt (rs->buf); | |
3225 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3226 | p = rs->buf; | |
3227 | ||
3228 | if (*p == 'E') | |
3229 | error (_("Remote failure reply: %s"), p); | |
3230 | ||
3231 | if (*p++ == 'm') | |
3232 | { | |
3233 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3234 | return 1; | |
3235 | } | |
3236 | ||
3237 | return 0; | |
3238 | } | |
3239 | ||
0fb4aa4b | 3240 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3241 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3242 | const char *strid) | |
0fb4aa4b PA |
3243 | { |
3244 | struct remote_state *rs = get_remote_state (); | |
3245 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3246 | struct static_tracepoint_marker *marker = NULL; | |
3247 | struct cleanup *old_chain; | |
3248 | char *p; | |
3249 | ||
3250 | /* Ask for a first packet of static tracepoint marker | |
3251 | definition. */ | |
3252 | putpkt ("qTfSTM"); | |
3253 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3254 | p = rs->buf; | |
3255 | if (*p == 'E') | |
3256 | error (_("Remote failure reply: %s"), p); | |
3257 | ||
3258 | old_chain = make_cleanup (free_current_marker, &marker); | |
3259 | ||
3260 | while (*p++ == 'm') | |
3261 | { | |
3262 | if (marker == NULL) | |
3263 | marker = XCNEW (struct static_tracepoint_marker); | |
3264 | ||
3265 | do | |
3266 | { | |
3267 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3268 | ||
3269 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3270 | { | |
3271 | VEC_safe_push (static_tracepoint_marker_p, | |
3272 | markers, marker); | |
3273 | marker = NULL; | |
3274 | } | |
3275 | else | |
3276 | { | |
3277 | release_static_tracepoint_marker (marker); | |
3278 | memset (marker, 0, sizeof (*marker)); | |
3279 | } | |
3280 | } | |
3281 | while (*p++ == ','); /* comma-separated list */ | |
3282 | /* Ask for another packet of static tracepoint definition. */ | |
3283 | putpkt ("qTsSTM"); | |
3284 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3285 | p = rs->buf; | |
3286 | } | |
3287 | ||
3288 | do_cleanups (old_chain); | |
3289 | return markers; | |
3290 | } | |
3291 | ||
3292 | \f | |
10760264 JB |
3293 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3294 | ||
3295 | static ptid_t | |
1e6b91a4 | 3296 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3297 | { |
ba348170 | 3298 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3299 | } |
3300 | \f | |
3301 | ||
24b06219 | 3302 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3303 | |
3304 | static void | |
fba45db2 | 3305 | extended_remote_restart (void) |
c906108c | 3306 | { |
d01949b6 | 3307 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3308 | |
3309 | /* Send the restart command; for reasons I don't understand the | |
3310 | remote side really expects a number after the "R". */ | |
ea9c271d | 3311 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3312 | putpkt (rs->buf); |
c906108c | 3313 | |
ad9a8f3f | 3314 | remote_fileio_reset (); |
c906108c SS |
3315 | } |
3316 | \f | |
3317 | /* Clean up connection to a remote debugger. */ | |
3318 | ||
c906108c | 3319 | static void |
de90e03d | 3320 | remote_close (struct target_ops *self) |
c906108c | 3321 | { |
5d93a237 TT |
3322 | struct remote_state *rs = get_remote_state (); |
3323 | ||
3324 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3325 | return; /* already closed */ |
3326 | ||
3327 | /* Make sure we leave stdin registered in the event loop, and we | |
3328 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3329 | remote_terminal_ours (self); |
ce5ce7ed | 3330 | |
5d93a237 TT |
3331 | serial_close (rs->remote_desc); |
3332 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3333 | |
3334 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3335 | of all the inferiors and their threads we were controlling. |
3336 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3337 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3338 | inferior_ptid = null_ptid; |
f67fd822 | 3339 | discard_all_inferiors (); |
ce5ce7ed | 3340 | |
f48ff2a7 YQ |
3341 | /* We are closing the remote target, so we should discard |
3342 | everything of this target. */ | |
bcc75809 | 3343 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3344 | |
3345 | if (remote_async_inferior_event_token) | |
3346 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3347 | |
5965e028 | 3348 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3349 | |
3350 | trace_reset_local_state (); | |
c906108c SS |
3351 | } |
3352 | ||
23860348 | 3353 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3354 | |
3355 | static void | |
fba45db2 | 3356 | get_offsets (void) |
c906108c | 3357 | { |
d01949b6 | 3358 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3359 | char *buf; |
085dd6e6 | 3360 | char *ptr; |
31d99776 DJ |
3361 | int lose, num_segments = 0, do_sections, do_segments; |
3362 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3363 | struct section_offsets *offs; |
31d99776 DJ |
3364 | struct symfile_segment_data *data; |
3365 | ||
3366 | if (symfile_objfile == NULL) | |
3367 | return; | |
c906108c SS |
3368 | |
3369 | putpkt ("qOffsets"); | |
6d820c5c | 3370 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3371 | buf = rs->buf; |
c906108c SS |
3372 | |
3373 | if (buf[0] == '\000') | |
3374 | return; /* Return silently. Stub doesn't support | |
23860348 | 3375 | this command. */ |
c906108c SS |
3376 | if (buf[0] == 'E') |
3377 | { | |
8a3fe4f8 | 3378 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3379 | return; |
3380 | } | |
3381 | ||
3382 | /* Pick up each field in turn. This used to be done with scanf, but | |
3383 | scanf will make trouble if CORE_ADDR size doesn't match | |
3384 | conversion directives correctly. The following code will work | |
3385 | with any size of CORE_ADDR. */ | |
3386 | text_addr = data_addr = bss_addr = 0; | |
3387 | ptr = buf; | |
3388 | lose = 0; | |
3389 | ||
61012eef | 3390 | if (startswith (ptr, "Text=")) |
c906108c SS |
3391 | { |
3392 | ptr += 5; | |
3393 | /* Don't use strtol, could lose on big values. */ | |
3394 | while (*ptr && *ptr != ';') | |
3395 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3396 | |
61012eef | 3397 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3398 | { |
3399 | ptr += 6; | |
3400 | while (*ptr && *ptr != ';') | |
3401 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3402 | } | |
3403 | else | |
3404 | lose = 1; | |
3405 | ||
61012eef | 3406 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3407 | { |
3408 | ptr += 5; | |
3409 | while (*ptr && *ptr != ';') | |
3410 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3411 | |
31d99776 DJ |
3412 | if (bss_addr != data_addr) |
3413 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3414 | } | |
3415 | else | |
3416 | lose = 1; | |
3417 | } | |
61012eef | 3418 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3419 | { |
31d99776 DJ |
3420 | ptr += 8; |
3421 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3422 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3423 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3424 | num_segments = 1; | |
3425 | ||
61012eef | 3426 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3427 | { |
3428 | ptr += 9; | |
3429 | while (*ptr && *ptr != ';') | |
3430 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3431 | num_segments++; | |
3432 | } | |
c906108c SS |
3433 | } |
3434 | else | |
3435 | lose = 1; | |
3436 | ||
3437 | if (lose) | |
8a3fe4f8 | 3438 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3439 | else if (*ptr != '\0') |
3440 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3441 | |
802188a7 | 3442 | offs = ((struct section_offsets *) |
a39a16c4 | 3443 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3444 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3445 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3446 | |
31d99776 DJ |
3447 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3448 | do_segments = (data != NULL); | |
3449 | do_sections = num_segments == 0; | |
c906108c | 3450 | |
28c32713 | 3451 | if (num_segments > 0) |
31d99776 | 3452 | { |
31d99776 DJ |
3453 | segments[0] = text_addr; |
3454 | segments[1] = data_addr; | |
3455 | } | |
28c32713 JB |
3456 | /* If we have two segments, we can still try to relocate everything |
3457 | by assuming that the .text and .data offsets apply to the whole | |
3458 | text and data segments. Convert the offsets given in the packet | |
3459 | to base addresses for symfile_map_offsets_to_segments. */ | |
3460 | else if (data && data->num_segments == 2) | |
3461 | { | |
3462 | segments[0] = data->segment_bases[0] + text_addr; | |
3463 | segments[1] = data->segment_bases[1] + data_addr; | |
3464 | num_segments = 2; | |
3465 | } | |
8d385431 DJ |
3466 | /* If the object file has only one segment, assume that it is text |
3467 | rather than data; main programs with no writable data are rare, | |
3468 | but programs with no code are useless. Of course the code might | |
3469 | have ended up in the data segment... to detect that we would need | |
3470 | the permissions here. */ | |
3471 | else if (data && data->num_segments == 1) | |
3472 | { | |
3473 | segments[0] = data->segment_bases[0] + text_addr; | |
3474 | num_segments = 1; | |
3475 | } | |
28c32713 JB |
3476 | /* There's no way to relocate by segment. */ |
3477 | else | |
3478 | do_segments = 0; | |
31d99776 DJ |
3479 | |
3480 | if (do_segments) | |
3481 | { | |
3482 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3483 | offs, num_segments, segments); | |
3484 | ||
3485 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3486 | error (_("Can not handle qOffsets TextSeg " |
3487 | "response with this symbol file")); | |
31d99776 DJ |
3488 | |
3489 | if (ret > 0) | |
3490 | do_sections = 0; | |
3491 | } | |
c906108c | 3492 | |
9ef895d6 DJ |
3493 | if (data) |
3494 | free_symfile_segment_data (data); | |
31d99776 DJ |
3495 | |
3496 | if (do_sections) | |
3497 | { | |
3498 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3499 | ||
3e43a32a MS |
3500 | /* This is a temporary kludge to force data and bss to use the |
3501 | same offsets because that's what nlmconv does now. The real | |
3502 | solution requires changes to the stub and remote.c that I | |
3503 | don't have time to do right now. */ | |
31d99776 DJ |
3504 | |
3505 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3506 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3507 | } | |
c906108c SS |
3508 | |
3509 | objfile_relocate (symfile_objfile, offs); | |
3510 | } | |
3511 | ||
9a7071a8 JB |
3512 | /* Send interrupt_sequence to remote target. */ |
3513 | static void | |
eeae04df | 3514 | send_interrupt_sequence (void) |
9a7071a8 | 3515 | { |
5d93a237 TT |
3516 | struct remote_state *rs = get_remote_state (); |
3517 | ||
9a7071a8 | 3518 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3519 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3520 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3521 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3522 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3523 | { | |
5d93a237 | 3524 | serial_send_break (rs->remote_desc); |
c33e31fd | 3525 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3526 | } |
3527 | else | |
3528 | internal_error (__FILE__, __LINE__, | |
3529 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3530 | interrupt_sequence_mode); | |
3531 | } | |
3532 | ||
3405876a PA |
3533 | |
3534 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3535 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3536 | ||
3537 | static ptid_t | |
3538 | stop_reply_extract_thread (char *stop_reply) | |
3539 | { | |
3540 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3541 | { | |
3542 | char *p; | |
3543 | ||
3544 | /* Txx r:val ; r:val (...) */ | |
3545 | p = &stop_reply[3]; | |
3546 | ||
3547 | /* Look for "register" named "thread". */ | |
3548 | while (*p != '\0') | |
3549 | { | |
3550 | char *p1; | |
3551 | ||
3552 | p1 = strchr (p, ':'); | |
3553 | if (p1 == NULL) | |
3554 | return null_ptid; | |
3555 | ||
3556 | if (strncmp (p, "thread", p1 - p) == 0) | |
3557 | return read_ptid (++p1, &p); | |
3558 | ||
3559 | p1 = strchr (p, ';'); | |
3560 | if (p1 == NULL) | |
3561 | return null_ptid; | |
3562 | p1++; | |
3563 | ||
3564 | p = p1; | |
3565 | } | |
3566 | } | |
3567 | ||
3568 | return null_ptid; | |
3569 | } | |
3570 | ||
b7ea362b PA |
3571 | /* Determine the remote side's current thread. If we have a stop |
3572 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3573 | "thread" register we can extract the current thread from. If not, | |
3574 | ask the remote which is the current thread with qC. The former | |
3575 | method avoids a roundtrip. */ | |
3576 | ||
3577 | static ptid_t | |
3578 | get_current_thread (char *wait_status) | |
3579 | { | |
6a49a997 | 3580 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3581 | |
3582 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3583 | the target architecture, which we haven't yet fully determined at | |
3584 | this point. */ | |
3585 | if (wait_status != NULL) | |
3586 | ptid = stop_reply_extract_thread (wait_status); | |
3587 | if (ptid_equal (ptid, null_ptid)) | |
3588 | ptid = remote_current_thread (inferior_ptid); | |
3589 | ||
3590 | return ptid; | |
3591 | } | |
3592 | ||
49c62f2e PA |
3593 | /* Query the remote target for which is the current thread/process, |
3594 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3595 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3596 | to return the current thread. |
3597 | ||
3598 | This function is called after handling the '?' or 'vRun' packets, | |
3599 | whose response is a stop reply from which we can also try | |
3600 | extracting the thread. If the target doesn't support the explicit | |
3601 | qC query, we infer the current thread from that stop reply, passed | |
3602 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3603 | |
3604 | static void | |
3405876a | 3605 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3606 | { |
3607 | struct remote_state *rs = get_remote_state (); | |
3608 | int fake_pid_p = 0; | |
6a49a997 | 3609 | ptid_t ptid; |
49c62f2e PA |
3610 | |
3611 | inferior_ptid = null_ptid; | |
3612 | ||
b7ea362b PA |
3613 | /* Now, if we have thread information, update inferior_ptid. */ |
3614 | ptid = get_current_thread (wait_status); | |
3405876a | 3615 | |
49c62f2e PA |
3616 | if (!ptid_equal (ptid, null_ptid)) |
3617 | { | |
3618 | if (!remote_multi_process_p (rs)) | |
3619 | fake_pid_p = 1; | |
3620 | ||
3621 | inferior_ptid = ptid; | |
3622 | } | |
3623 | else | |
3624 | { | |
3625 | /* Without this, some commands which require an active target | |
3626 | (such as kill) won't work. This variable serves (at least) | |
3627 | double duty as both the pid of the target process (if it has | |
3628 | such), and as a flag indicating that a target is active. */ | |
3629 | inferior_ptid = magic_null_ptid; | |
3630 | fake_pid_p = 1; | |
3631 | } | |
3632 | ||
1b6e6f5c | 3633 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3634 | |
3635 | /* Add the main thread. */ | |
3636 | add_thread_silent (inferior_ptid); | |
3637 | } | |
3638 | ||
221e1a37 PA |
3639 | /* Process all initial stop replies the remote side sent in response |
3640 | to the ? packet. These indicate threads that were already stopped | |
3641 | on initial connection. We mark these threads as stopped and print | |
3642 | their current frame before giving the user the prompt. */ | |
3643 | ||
3644 | static void | |
3645 | process_initial_stop_replies (void) | |
3646 | { | |
3647 | int pending_stop_replies = stop_reply_queue_length (); | |
3648 | ||
3649 | /* Consume the initial pending events. */ | |
3650 | while (pending_stop_replies-- > 0) | |
3651 | { | |
3652 | ptid_t waiton_ptid = minus_one_ptid; | |
3653 | ptid_t event_ptid; | |
3654 | struct target_waitstatus ws; | |
3655 | int ignore_event = 0; | |
3656 | ||
3657 | memset (&ws, 0, sizeof (ws)); | |
3658 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3659 | if (remote_debug) | |
3660 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3661 | ||
3662 | switch (ws.kind) | |
3663 | { | |
3664 | case TARGET_WAITKIND_IGNORE: | |
3665 | case TARGET_WAITKIND_NO_RESUMED: | |
3666 | case TARGET_WAITKIND_SIGNALLED: | |
3667 | case TARGET_WAITKIND_EXITED: | |
3668 | /* We shouldn't see these, but if we do, just ignore. */ | |
3669 | if (remote_debug) | |
3670 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3671 | ignore_event = 1; | |
3672 | break; | |
3673 | ||
3674 | case TARGET_WAITKIND_EXECD: | |
3675 | xfree (ws.value.execd_pathname); | |
3676 | break; | |
3677 | default: | |
3678 | break; | |
3679 | } | |
3680 | ||
3681 | if (ignore_event) | |
3682 | continue; | |
3683 | ||
3684 | switch_to_thread (event_ptid); | |
3685 | set_executing (event_ptid, 0); | |
3686 | set_running (event_ptid, 0); | |
3687 | ||
3688 | stop_pc = get_frame_pc (get_current_frame ()); | |
3689 | set_current_sal_from_frame (get_current_frame ()); | |
3690 | ||
3691 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3692 | { | |
3693 | enum gdb_signal sig = ws.value.sig; | |
3694 | ||
3695 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3696 | instead of signal 0. Suppress it. */ | |
3697 | if (sig == GDB_SIGNAL_TRAP) | |
3698 | sig = GDB_SIGNAL_0; | |
3699 | inferior_thread ()->suspend.stop_signal = sig; | |
3700 | ||
3701 | if (signal_print_state (sig)) | |
3702 | observer_notify_signal_received (sig); | |
3703 | } | |
3704 | ||
243a9253 | 3705 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
221e1a37 PA |
3706 | observer_notify_normal_stop (NULL, 1); |
3707 | } | |
3708 | } | |
3709 | ||
9cbc821d | 3710 | static void |
04bd08de | 3711 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3712 | { |
c8d104ad PA |
3713 | struct remote_state *rs = get_remote_state (); |
3714 | struct packet_config *noack_config; | |
2d717e4f | 3715 | char *wait_status = NULL; |
8621d6a9 | 3716 | |
23860348 | 3717 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3718 | QUIT; |
c906108c | 3719 | |
9a7071a8 JB |
3720 | if (interrupt_on_connect) |
3721 | send_interrupt_sequence (); | |
3722 | ||
57e12211 | 3723 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3724 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3725 | |
1e51243a PA |
3726 | /* Signal other parts that we're going through the initial setup, |
3727 | and so things may not be stable yet. */ | |
3728 | rs->starting_up = 1; | |
3729 | ||
c8d104ad PA |
3730 | /* The first packet we send to the target is the optional "supported |
3731 | packets" request. If the target can answer this, it will tell us | |
3732 | which later probes to skip. */ | |
3733 | remote_query_supported (); | |
3734 | ||
d914c394 | 3735 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3736 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3737 | remote_set_permissions (target); |
d914c394 | 3738 | |
c8d104ad PA |
3739 | /* Next, we possibly activate noack mode. |
3740 | ||
3741 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3742 | enable noack mode if the stub reported a wish for it with | |
3743 | qSupported. | |
3744 | ||
3745 | If set to TRUE, then enable noack mode even if the stub didn't | |
3746 | report it in qSupported. If the stub doesn't reply OK, the | |
3747 | session ends with an error. | |
3748 | ||
3749 | If FALSE, then don't activate noack mode, regardless of what the | |
3750 | stub claimed should be the default with qSupported. */ | |
3751 | ||
3752 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3753 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3754 | { |
3755 | putpkt ("QStartNoAckMode"); | |
3756 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3757 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3758 | rs->noack_mode = 1; | |
3759 | } | |
3760 | ||
04bd08de | 3761 | if (extended_p) |
5fe04517 PA |
3762 | { |
3763 | /* Tell the remote that we are using the extended protocol. */ | |
3764 | putpkt ("!"); | |
3765 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3766 | } | |
3767 | ||
9b224c5e PA |
3768 | /* Let the target know which signals it is allowed to pass down to |
3769 | the program. */ | |
3770 | update_signals_program_target (); | |
3771 | ||
d962ef82 DJ |
3772 | /* Next, if the target can specify a description, read it. We do |
3773 | this before anything involving memory or registers. */ | |
3774 | target_find_description (); | |
3775 | ||
6c95b8df PA |
3776 | /* Next, now that we know something about the target, update the |
3777 | address spaces in the program spaces. */ | |
3778 | update_address_spaces (); | |
3779 | ||
50c71eaf PA |
3780 | /* On OSs where the list of libraries is global to all |
3781 | processes, we fetch them early. */ | |
f5656ead | 3782 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3783 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3784 | |
74531fed PA |
3785 | if (non_stop) |
3786 | { | |
4082afcc | 3787 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3788 | error (_("Non-stop mode requested, but remote " |
3789 | "does not support non-stop")); | |
74531fed PA |
3790 | |
3791 | putpkt ("QNonStop:1"); | |
3792 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3793 | ||
3794 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3795 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3796 | |
3797 | /* Find about threads and processes the stub is already | |
3798 | controlling. We default to adding them in the running state. | |
3799 | The '?' query below will then tell us about which threads are | |
3800 | stopped. */ | |
e8032dde | 3801 | remote_update_thread_list (target); |
74531fed | 3802 | } |
4082afcc | 3803 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3804 | { |
3805 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3806 | Request it explicitly. */ |
74531fed PA |
3807 | putpkt ("QNonStop:0"); |
3808 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3809 | ||
3810 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3811 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3812 | } |
3813 | ||
a0743c90 YQ |
3814 | /* Upload TSVs regardless of whether the target is running or not. The |
3815 | remote stub, such as GDBserver, may have some predefined or builtin | |
3816 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3817 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3818 | { |
3819 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3820 | ||
181e3713 | 3821 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3822 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3823 | } | |
3824 | ||
2d717e4f DJ |
3825 | /* Check whether the target is running now. */ |
3826 | putpkt ("?"); | |
3827 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3828 | ||
74531fed | 3829 | if (!non_stop) |
2d717e4f | 3830 | { |
e714e1bf UW |
3831 | ptid_t ptid; |
3832 | int fake_pid_p = 0; | |
3833 | struct inferior *inf; | |
3834 | ||
74531fed | 3835 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3836 | { |
04bd08de | 3837 | if (!extended_p) |
74531fed | 3838 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3839 | |
3840 | /* We're connected, but not running. Drop out before we | |
3841 | call start_remote. */ | |
e278ad5b | 3842 | rs->starting_up = 0; |
c35b1492 | 3843 | return; |
2d717e4f DJ |
3844 | } |
3845 | else | |
74531fed | 3846 | { |
74531fed PA |
3847 | /* Save the reply for later. */ |
3848 | wait_status = alloca (strlen (rs->buf) + 1); | |
3849 | strcpy (wait_status, rs->buf); | |
3850 | } | |
3851 | ||
b7ea362b | 3852 | /* Fetch thread list. */ |
e8032dde | 3853 | target_update_thread_list (); |
b7ea362b | 3854 | |
74531fed PA |
3855 | /* Let the stub know that we want it to return the thread. */ |
3856 | set_continue_thread (minus_one_ptid); | |
3857 | ||
b7ea362b PA |
3858 | if (thread_count () == 0) |
3859 | { | |
3860 | /* Target has no concept of threads at all. GDB treats | |
3861 | non-threaded target as single-threaded; add a main | |
3862 | thread. */ | |
3863 | add_current_inferior_and_thread (wait_status); | |
3864 | } | |
3865 | else | |
3866 | { | |
3867 | /* We have thread information; select the thread the target | |
3868 | says should be current. If we're reconnecting to a | |
3869 | multi-threaded program, this will ideally be the thread | |
3870 | that last reported an event before GDB disconnected. */ | |
3871 | inferior_ptid = get_current_thread (wait_status); | |
3872 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3873 | { | |
3874 | /* Odd... The target was able to list threads, but not | |
3875 | tell us which thread was current (no "thread" | |
3876 | register in T stop reply?). Just pick the first | |
3877 | thread in the thread list then. */ | |
c9f35b34 KB |
3878 | |
3879 | if (remote_debug) | |
3880 | fprintf_unfiltered (gdb_stdlog, | |
3881 | "warning: couldn't determine remote " | |
3882 | "current thread; picking first in list.\n"); | |
3883 | ||
b7ea362b PA |
3884 | inferior_ptid = thread_list->ptid; |
3885 | } | |
3886 | } | |
74531fed | 3887 | |
6e586cc5 YQ |
3888 | /* init_wait_for_inferior should be called before get_offsets in order |
3889 | to manage `inserted' flag in bp loc in a correct state. | |
3890 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3891 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3892 | start_remote, set `inserted' flag to 1. In the initialization of | |
3893 | inferior, breakpoint_init_inferior should be called first, and then | |
3894 | breakpoint_re_set can be called. If this order is broken, state of | |
3895 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3896 | manipulation. */ | |
3897 | init_wait_for_inferior (); | |
3898 | ||
74531fed PA |
3899 | get_offsets (); /* Get text, data & bss offsets. */ |
3900 | ||
d962ef82 DJ |
3901 | /* If we could not find a description using qXfer, and we know |
3902 | how to do it some other way, try again. This is not | |
3903 | supported for non-stop; it could be, but it is tricky if | |
3904 | there are no stopped threads when we connect. */ | |
04bd08de | 3905 | if (remote_read_description_p (target) |
f5656ead | 3906 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3907 | { |
3908 | target_clear_description (); | |
3909 | target_find_description (); | |
3910 | } | |
3911 | ||
74531fed PA |
3912 | /* Use the previously fetched status. */ |
3913 | gdb_assert (wait_status != NULL); | |
3914 | strcpy (rs->buf, wait_status); | |
3915 | rs->cached_wait_status = 1; | |
3916 | ||
3917 | immediate_quit--; | |
04bd08de | 3918 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3919 | } |
3920 | else | |
3921 | { | |
221e1a37 PA |
3922 | ptid_t current_ptid; |
3923 | ||
68c97600 PA |
3924 | /* Clear WFI global state. Do this before finding about new |
3925 | threads and inferiors, and setting the current inferior. | |
3926 | Otherwise we would clear the proceed status of the current | |
3927 | inferior when we want its stop_soon state to be preserved | |
3928 | (see notice_new_inferior). */ | |
3929 | init_wait_for_inferior (); | |
3930 | ||
74531fed PA |
3931 | /* In non-stop, we will either get an "OK", meaning that there |
3932 | are no stopped threads at this time; or, a regular stop | |
3933 | reply. In the latter case, there may be more than one thread | |
3934 | stopped --- we pull them all out using the vStopped | |
3935 | mechanism. */ | |
3936 | if (strcmp (rs->buf, "OK") != 0) | |
3937 | { | |
722247f1 | 3938 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3939 | |
722247f1 YQ |
3940 | /* remote_notif_get_pending_replies acks this one, and gets |
3941 | the rest out. */ | |
f48ff2a7 | 3942 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3943 | = remote_notif_parse (notif, rs->buf); |
3944 | remote_notif_get_pending_events (notif); | |
74531fed | 3945 | } |
2d717e4f | 3946 | |
74531fed PA |
3947 | if (thread_count () == 0) |
3948 | { | |
04bd08de | 3949 | if (!extended_p) |
74531fed | 3950 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3951 | |
c35b1492 PA |
3952 | /* We're connected, but not running. Drop out before we |
3953 | call start_remote. */ | |
e278ad5b | 3954 | rs->starting_up = 0; |
c35b1492 PA |
3955 | return; |
3956 | } | |
74531fed PA |
3957 | |
3958 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3959 | |
74531fed PA |
3960 | /* Force the stub to choose a thread. */ |
3961 | set_general_thread (null_ptid); | |
c906108c | 3962 | |
74531fed | 3963 | /* Query it. */ |
221e1a37 | 3964 | current_ptid = remote_current_thread (minus_one_ptid); |
74531fed PA |
3965 | if (ptid_equal (inferior_ptid, minus_one_ptid)) |
3966 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3967 | |
221e1a37 | 3968 | inferior_ptid = current_ptid; |
74531fed PA |
3969 | get_offsets (); /* Get text, data & bss offsets. */ |
3970 | ||
3971 | /* In non-stop mode, any cached wait status will be stored in | |
3972 | the stop reply queue. */ | |
3973 | gdb_assert (wait_status == NULL); | |
f0223081 | 3974 | |
2455069d | 3975 | /* Report all signals during attach/startup. */ |
94bedb42 | 3976 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
3977 | |
3978 | /* If there are already stopped threads, mark them stopped and | |
3979 | report their stops before giving the prompt to the user. */ | |
3980 | process_initial_stop_replies (); | |
3981 | ||
3982 | switch_to_thread (current_ptid); | |
3983 | ||
3984 | if (target_can_async_p ()) | |
3985 | target_async (1); | |
74531fed | 3986 | } |
c8d104ad | 3987 | |
c8d104ad PA |
3988 | /* If we connected to a live target, do some additional setup. */ |
3989 | if (target_has_execution) | |
3990 | { | |
f4ccffad | 3991 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3992 | remote_check_symbols (); |
c8d104ad | 3993 | } |
50c71eaf | 3994 | |
d5551862 SS |
3995 | /* Possibly the target has been engaged in a trace run started |
3996 | previously; find out where things are at. */ | |
8bd200f1 | 3997 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3998 | { |
00bf0b85 | 3999 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4000 | |
00bf0b85 SS |
4001 | if (current_trace_status ()->running) |
4002 | printf_filtered (_("Trace is already running on the target.\n")); | |
4003 | ||
ab6617cc | 4004 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4005 | |
4006 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4007 | } |
4008 | ||
1e51243a PA |
4009 | /* The thread and inferior lists are now synchronized with the |
4010 | target, our symbols have been relocated, and we're merged the | |
4011 | target's tracepoints with ours. We're done with basic start | |
4012 | up. */ | |
4013 | rs->starting_up = 0; | |
4014 | ||
a25a5a45 PA |
4015 | /* Maybe breakpoints are global and need to be inserted now. */ |
4016 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4017 | insert_breakpoints (); |
c906108c SS |
4018 | } |
4019 | ||
4020 | /* Open a connection to a remote debugger. | |
4021 | NAME is the filename used for communication. */ | |
4022 | ||
4023 | static void | |
014f9477 | 4024 | remote_open (const char *name, int from_tty) |
c906108c | 4025 | { |
75c99385 | 4026 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4027 | } |
4028 | ||
c906108c SS |
4029 | /* Open a connection to a remote debugger using the extended |
4030 | remote gdb protocol. NAME is the filename used for communication. */ | |
4031 | ||
4032 | static void | |
014f9477 | 4033 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4034 | { |
75c99385 | 4035 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4036 | } |
4037 | ||
ca4f7f8b PA |
4038 | /* Reset all packets back to "unknown support". Called when opening a |
4039 | new connection to a remote target. */ | |
c906108c | 4040 | |
d471ea57 | 4041 | static void |
ca4f7f8b | 4042 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4043 | { |
4044 | int i; | |
a744cf53 | 4045 | |
444abaca | 4046 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4047 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4048 | } |
4049 | ||
ca4f7f8b PA |
4050 | /* Initialize all packet configs. */ |
4051 | ||
4052 | static void | |
4053 | init_all_packet_configs (void) | |
4054 | { | |
4055 | int i; | |
4056 | ||
4057 | for (i = 0; i < PACKET_MAX; i++) | |
4058 | { | |
4059 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4060 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4061 | } | |
4062 | } | |
4063 | ||
23860348 | 4064 | /* Symbol look-up. */ |
dc8acb97 MS |
4065 | |
4066 | static void | |
36d25514 | 4067 | remote_check_symbols (void) |
dc8acb97 | 4068 | { |
d01949b6 | 4069 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4070 | char *msg, *reply, *tmp; |
3b7344d5 | 4071 | struct bound_minimal_symbol sym; |
dc8acb97 | 4072 | int end; |
a5c0808e | 4073 | struct cleanup *old_chain; |
dc8acb97 | 4074 | |
63154eca PA |
4075 | /* The remote side has no concept of inferiors that aren't running |
4076 | yet, it only knows about running processes. If we're connected | |
4077 | but our current inferior is not running, we should not invite the | |
4078 | remote target to request symbol lookups related to its | |
4079 | (unrelated) current process. */ | |
4080 | if (!target_has_execution) | |
4081 | return; | |
4082 | ||
4082afcc | 4083 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4084 | return; |
4085 | ||
63154eca PA |
4086 | /* Make sure the remote is pointing at the right process. Note |
4087 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4088 | set_general_process (); |
4089 | ||
6d820c5c DJ |
4090 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4091 | because we need both at the same time. */ | |
a5c0808e PA |
4092 | msg = xmalloc (get_remote_packet_size ()); |
4093 | old_chain = make_cleanup (xfree, msg); | |
6d820c5c | 4094 | |
23860348 | 4095 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4096 | |
4097 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
4098 | getpkt (&rs->buf, &rs->buf_size, 0); |
4099 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 4100 | reply = rs->buf; |
dc8acb97 | 4101 | |
61012eef | 4102 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4103 | { |
77e371c0 TT |
4104 | struct bound_minimal_symbol sym; |
4105 | ||
dc8acb97 | 4106 | tmp = &reply[8]; |
cfd77fa1 | 4107 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4108 | msg[end] = '\0'; |
4109 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4110 | if (sym.minsym == NULL) |
ea9c271d | 4111 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4112 | else |
2bbe3cc1 | 4113 | { |
f5656ead | 4114 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4115 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4116 | |
4117 | /* If this is a function address, return the start of code | |
4118 | instead of any data function descriptor. */ | |
f5656ead | 4119 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4120 | sym_addr, |
4121 | ¤t_target); | |
4122 | ||
4123 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4124 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4125 | } |
4126 | ||
dc8acb97 | 4127 | putpkt (msg); |
6d820c5c | 4128 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4129 | reply = rs->buf; |
dc8acb97 | 4130 | } |
a5c0808e PA |
4131 | |
4132 | do_cleanups (old_chain); | |
dc8acb97 MS |
4133 | } |
4134 | ||
9db8d71f | 4135 | static struct serial * |
baa336ce | 4136 | remote_serial_open (const char *name) |
9db8d71f DJ |
4137 | { |
4138 | static int udp_warning = 0; | |
4139 | ||
4140 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4141 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4142 | serial connection is reliable and not the serial connection promising | |
4143 | to be. */ | |
61012eef | 4144 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4145 | { |
3e43a32a MS |
4146 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4147 | "Some events may be lost, rendering further debugging " | |
4148 | "impossible.")); | |
9db8d71f DJ |
4149 | udp_warning = 1; |
4150 | } | |
4151 | ||
4152 | return serial_open (name); | |
4153 | } | |
4154 | ||
d914c394 SS |
4155 | /* Inform the target of our permission settings. The permission flags |
4156 | work without this, but if the target knows the settings, it can do | |
4157 | a couple things. First, it can add its own check, to catch cases | |
4158 | that somehow manage to get by the permissions checks in target | |
4159 | methods. Second, if the target is wired to disallow particular | |
4160 | settings (for instance, a system in the field that is not set up to | |
4161 | be able to stop at a breakpoint), it can object to any unavailable | |
4162 | permissions. */ | |
4163 | ||
4164 | void | |
c378d69d | 4165 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4166 | { |
4167 | struct remote_state *rs = get_remote_state (); | |
4168 | ||
bba74b36 YQ |
4169 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4170 | "WriteReg:%x;WriteMem:%x;" | |
4171 | "InsertBreak:%x;InsertTrace:%x;" | |
4172 | "InsertFastTrace:%x;Stop:%x", | |
4173 | may_write_registers, may_write_memory, | |
4174 | may_insert_breakpoints, may_insert_tracepoints, | |
4175 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4176 | putpkt (rs->buf); |
4177 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4178 | ||
4179 | /* If the target didn't like the packet, warn the user. Do not try | |
4180 | to undo the user's settings, that would just be maddening. */ | |
4181 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4182 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4183 | } |
4184 | ||
be2a5f71 DJ |
4185 | /* This type describes each known response to the qSupported |
4186 | packet. */ | |
4187 | struct protocol_feature | |
4188 | { | |
4189 | /* The name of this protocol feature. */ | |
4190 | const char *name; | |
4191 | ||
4192 | /* The default for this protocol feature. */ | |
4193 | enum packet_support default_support; | |
4194 | ||
4195 | /* The function to call when this feature is reported, or after | |
4196 | qSupported processing if the feature is not supported. | |
4197 | The first argument points to this structure. The second | |
4198 | argument indicates whether the packet requested support be | |
4199 | enabled, disabled, or probed (or the default, if this function | |
4200 | is being called at the end of processing and this feature was | |
4201 | not reported). The third argument may be NULL; if not NULL, it | |
4202 | is a NUL-terminated string taken from the packet following | |
4203 | this feature's name and an equals sign. */ | |
4204 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4205 | const char *); | |
4206 | ||
4207 | /* The corresponding packet for this feature. Only used if | |
4208 | FUNC is remote_supported_packet. */ | |
4209 | int packet; | |
4210 | }; | |
4211 | ||
be2a5f71 DJ |
4212 | static void |
4213 | remote_supported_packet (const struct protocol_feature *feature, | |
4214 | enum packet_support support, | |
4215 | const char *argument) | |
4216 | { | |
4217 | if (argument) | |
4218 | { | |
4219 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4220 | " \"%s\"."), feature->name); | |
4221 | return; | |
4222 | } | |
4223 | ||
4082afcc | 4224 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4225 | } |
be2a5f71 DJ |
4226 | |
4227 | static void | |
4228 | remote_packet_size (const struct protocol_feature *feature, | |
4229 | enum packet_support support, const char *value) | |
4230 | { | |
4231 | struct remote_state *rs = get_remote_state (); | |
4232 | ||
4233 | int packet_size; | |
4234 | char *value_end; | |
4235 | ||
4236 | if (support != PACKET_ENABLE) | |
4237 | return; | |
4238 | ||
4239 | if (value == NULL || *value == '\0') | |
4240 | { | |
4241 | warning (_("Remote target reported \"%s\" without a size."), | |
4242 | feature->name); | |
4243 | return; | |
4244 | } | |
4245 | ||
4246 | errno = 0; | |
4247 | packet_size = strtol (value, &value_end, 16); | |
4248 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4249 | { | |
4250 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4251 | feature->name, value); | |
4252 | return; | |
4253 | } | |
4254 | ||
be2a5f71 DJ |
4255 | /* Record the new maximum packet size. */ |
4256 | rs->explicit_packet_size = packet_size; | |
4257 | } | |
4258 | ||
dc473cfb | 4259 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4260 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4261 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4262 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4263 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4264 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4265 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4266 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4267 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4268 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4269 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4270 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4271 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4272 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4273 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4274 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4275 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4276 | PACKET_qXfer_spu_read }, | |
4277 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4278 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4279 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4280 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4281 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4282 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4283 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4284 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4285 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4286 | PACKET_QPassSignals }, | |
9b224c5e PA |
4287 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4288 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4289 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4290 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4291 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4292 | PACKET_multiprocess_feature }, | |
4293 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4294 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4295 | PACKET_qXfer_siginfo_read }, | |
4296 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4297 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4298 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4299 | PACKET_ConditionalTracepoints }, |
4082afcc | 4300 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4301 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4302 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4303 | PACKET_BreakpointCommands }, |
4082afcc | 4304 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4305 | PACKET_FastTracepoints }, |
4082afcc | 4306 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4307 | PACKET_StaticTracepoints }, |
4082afcc | 4308 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4309 | PACKET_InstallInTrace}, |
4082afcc PA |
4310 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4311 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4312 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4313 | PACKET_bc }, | |
4314 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4315 | PACKET_bs }, | |
409873ef SS |
4316 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4317 | PACKET_TracepointSource }, | |
d914c394 SS |
4318 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4319 | PACKET_QAllow }, | |
4082afcc PA |
4320 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4321 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4322 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4323 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4324 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4325 | PACKET_qXfer_uib }, | |
03583c20 UW |
4326 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4327 | PACKET_QDisableRandomization }, | |
d1feda86 | 4328 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4329 | { "QTBuffer:size", PACKET_DISABLE, |
4330 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4331 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4332 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4333 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4334 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4335 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4336 | PACKET_qXfer_btrace }, |
4337 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4338 | PACKET_qXfer_btrace_conf }, |
4339 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4340 | PACKET_Qbtrace_conf_bts_size }, |
4341 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4342 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4343 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4344 | PACKET_fork_event_feature }, | |
4345 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4346 | PACKET_vfork_event_feature }, | |
94585166 DB |
4347 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4348 | PACKET_exec_event_feature }, | |
b20a6524 MM |
4349 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
4350 | PACKET_Qbtrace_conf_pt_size } | |
be2a5f71 DJ |
4351 | }; |
4352 | ||
c8d5aac9 L |
4353 | static char *remote_support_xml; |
4354 | ||
4355 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4356 | ||
4357 | void | |
6e39997a | 4358 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4359 | { |
4360 | #if defined(HAVE_LIBEXPAT) | |
4361 | if (remote_support_xml == NULL) | |
c4f7c687 | 4362 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4363 | else |
4364 | { | |
4365 | char *copy = xstrdup (remote_support_xml + 13); | |
4366 | char *p = strtok (copy, ","); | |
4367 | ||
4368 | do | |
4369 | { | |
4370 | if (strcmp (p, xml) == 0) | |
4371 | { | |
4372 | /* already there */ | |
4373 | xfree (copy); | |
4374 | return; | |
4375 | } | |
4376 | } | |
4377 | while ((p = strtok (NULL, ",")) != NULL); | |
4378 | xfree (copy); | |
4379 | ||
94b0dee1 PA |
4380 | remote_support_xml = reconcat (remote_support_xml, |
4381 | remote_support_xml, ",", xml, | |
4382 | (char *) NULL); | |
c8d5aac9 L |
4383 | } |
4384 | #endif | |
4385 | } | |
4386 | ||
4387 | static char * | |
4388 | remote_query_supported_append (char *msg, const char *append) | |
4389 | { | |
4390 | if (msg) | |
94b0dee1 | 4391 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4392 | else |
4393 | return xstrdup (append); | |
4394 | } | |
4395 | ||
be2a5f71 DJ |
4396 | static void |
4397 | remote_query_supported (void) | |
4398 | { | |
4399 | struct remote_state *rs = get_remote_state (); | |
4400 | char *next; | |
4401 | int i; | |
4402 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4403 | ||
4404 | /* The packet support flags are handled differently for this packet | |
4405 | than for most others. We treat an error, a disabled packet, and | |
4406 | an empty response identically: any features which must be reported | |
4407 | to be used will be automatically disabled. An empty buffer | |
4408 | accomplishes this, since that is also the representation for a list | |
4409 | containing no features. */ | |
4410 | ||
4411 | rs->buf[0] = 0; | |
4082afcc | 4412 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4413 | { |
c8d5aac9 | 4414 | char *q = NULL; |
94b0dee1 | 4415 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4416 | |
73b8c1fd PA |
4417 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4418 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4419 | |
f7e6eed5 PA |
4420 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4421 | q = remote_query_supported_append (q, "swbreak+"); | |
4422 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4423 | q = remote_query_supported_append (q, "hwbreak+"); | |
4424 | ||
c8d5aac9 L |
4425 | if (remote_support_xml) |
4426 | q = remote_query_supported_append (q, remote_support_xml); | |
4427 | ||
dde08ee1 PA |
4428 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4429 | ||
89245bc0 DB |
4430 | if (rs->extended) |
4431 | { | |
4432 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4433 | != AUTO_BOOLEAN_FALSE) | |
4434 | q = remote_query_supported_append (q, "fork-events+"); | |
4435 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4436 | != AUTO_BOOLEAN_FALSE) | |
4437 | q = remote_query_supported_append (q, "vfork-events+"); | |
94585166 DB |
4438 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
4439 | != AUTO_BOOLEAN_FALSE) | |
4440 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 DB |
4441 | } |
4442 | ||
dde08ee1 PA |
4443 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4444 | putpkt (q); | |
82f73884 | 4445 | |
94b0dee1 PA |
4446 | do_cleanups (old_chain); |
4447 | ||
be2a5f71 DJ |
4448 | getpkt (&rs->buf, &rs->buf_size, 0); |
4449 | ||
4450 | /* If an error occured, warn, but do not return - just reset the | |
4451 | buffer to empty and go on to disable features. */ | |
4452 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4453 | == PACKET_ERROR) | |
4454 | { | |
4455 | warning (_("Remote failure reply: %s"), rs->buf); | |
4456 | rs->buf[0] = 0; | |
4457 | } | |
4458 | } | |
4459 | ||
4460 | memset (seen, 0, sizeof (seen)); | |
4461 | ||
4462 | next = rs->buf; | |
4463 | while (*next) | |
4464 | { | |
4465 | enum packet_support is_supported; | |
4466 | char *p, *end, *name_end, *value; | |
4467 | ||
4468 | /* First separate out this item from the rest of the packet. If | |
4469 | there's another item after this, we overwrite the separator | |
4470 | (terminated strings are much easier to work with). */ | |
4471 | p = next; | |
4472 | end = strchr (p, ';'); | |
4473 | if (end == NULL) | |
4474 | { | |
4475 | end = p + strlen (p); | |
4476 | next = end; | |
4477 | } | |
4478 | else | |
4479 | { | |
89be2091 DJ |
4480 | *end = '\0'; |
4481 | next = end + 1; | |
4482 | ||
be2a5f71 DJ |
4483 | if (end == p) |
4484 | { | |
4485 | warning (_("empty item in \"qSupported\" response")); | |
4486 | continue; | |
4487 | } | |
be2a5f71 DJ |
4488 | } |
4489 | ||
4490 | name_end = strchr (p, '='); | |
4491 | if (name_end) | |
4492 | { | |
4493 | /* This is a name=value entry. */ | |
4494 | is_supported = PACKET_ENABLE; | |
4495 | value = name_end + 1; | |
4496 | *name_end = '\0'; | |
4497 | } | |
4498 | else | |
4499 | { | |
4500 | value = NULL; | |
4501 | switch (end[-1]) | |
4502 | { | |
4503 | case '+': | |
4504 | is_supported = PACKET_ENABLE; | |
4505 | break; | |
4506 | ||
4507 | case '-': | |
4508 | is_supported = PACKET_DISABLE; | |
4509 | break; | |
4510 | ||
4511 | case '?': | |
4512 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4513 | break; | |
4514 | ||
4515 | default: | |
3e43a32a MS |
4516 | warning (_("unrecognized item \"%s\" " |
4517 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4518 | continue; |
4519 | } | |
4520 | end[-1] = '\0'; | |
4521 | } | |
4522 | ||
4523 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4524 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4525 | { | |
4526 | const struct protocol_feature *feature; | |
4527 | ||
4528 | seen[i] = 1; | |
4529 | feature = &remote_protocol_features[i]; | |
4530 | feature->func (feature, is_supported, value); | |
4531 | break; | |
4532 | } | |
4533 | } | |
4534 | ||
4535 | /* If we increased the packet size, make sure to increase the global | |
4536 | buffer size also. We delay this until after parsing the entire | |
4537 | qSupported packet, because this is the same buffer we were | |
4538 | parsing. */ | |
4539 | if (rs->buf_size < rs->explicit_packet_size) | |
4540 | { | |
4541 | rs->buf_size = rs->explicit_packet_size; | |
4542 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4543 | } | |
4544 | ||
4545 | /* Handle the defaults for unmentioned features. */ | |
4546 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4547 | if (!seen[i]) | |
4548 | { | |
4549 | const struct protocol_feature *feature; | |
4550 | ||
4551 | feature = &remote_protocol_features[i]; | |
4552 | feature->func (feature, feature->default_support, NULL); | |
4553 | } | |
4554 | } | |
4555 | ||
78a095c3 JK |
4556 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4557 | on it so remove them first. */ | |
4558 | ||
4559 | static void | |
4560 | remote_unpush_target (void) | |
4561 | { | |
4562 | pop_all_targets_above (process_stratum - 1); | |
4563 | } | |
be2a5f71 | 4564 | |
c906108c | 4565 | static void |
014f9477 | 4566 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4567 | struct target_ops *target, int extended_p) |
c906108c | 4568 | { |
d01949b6 | 4569 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4570 | |
c906108c | 4571 | if (name == 0) |
8a3fe4f8 | 4572 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4573 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4574 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4575 | |
23860348 | 4576 | /* See FIXME above. */ |
c6ebd6cf | 4577 | if (!target_async_permitted) |
92d1e331 | 4578 | wait_forever_enabled_p = 1; |
6426a772 | 4579 | |
2d717e4f | 4580 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4581 | Ask this question first, before target_preopen has a chance to kill |
4582 | anything. */ | |
5d93a237 | 4583 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4584 | { |
78a095c3 JK |
4585 | if (from_tty |
4586 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4587 | error (_("Still connected.")); |
4588 | } | |
4589 | ||
78a095c3 | 4590 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4591 | target_preopen (from_tty); |
4592 | ||
89be2091 | 4593 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4594 | xfree (rs->last_pass_packet); |
4595 | rs->last_pass_packet = NULL; | |
89be2091 | 4596 | |
9b224c5e PA |
4597 | /* Make sure we send the program signals list the next time we |
4598 | resume. */ | |
5e4a05c4 TT |
4599 | xfree (rs->last_program_signals_packet); |
4600 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4601 | |
ad9a8f3f | 4602 | remote_fileio_reset (); |
1dd41f16 NS |
4603 | reopen_exec_file (); |
4604 | reread_symbols (); | |
4605 | ||
5d93a237 TT |
4606 | rs->remote_desc = remote_serial_open (name); |
4607 | if (!rs->remote_desc) | |
c906108c SS |
4608 | perror_with_name (name); |
4609 | ||
4610 | if (baud_rate != -1) | |
4611 | { | |
5d93a237 | 4612 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4613 | { |
9b74d5d3 KB |
4614 | /* The requested speed could not be set. Error out to |
4615 | top level after closing remote_desc. Take care to | |
4616 | set remote_desc to NULL to avoid closing remote_desc | |
4617 | more than once. */ | |
5d93a237 TT |
4618 | serial_close (rs->remote_desc); |
4619 | rs->remote_desc = NULL; | |
c906108c SS |
4620 | perror_with_name (name); |
4621 | } | |
4622 | } | |
4623 | ||
236af5e3 | 4624 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4625 | serial_raw (rs->remote_desc); |
c906108c SS |
4626 | |
4627 | /* If there is something sitting in the buffer we might take it as a | |
4628 | response to a command, which would be bad. */ | |
5d93a237 | 4629 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4630 | |
4631 | if (from_tty) | |
4632 | { | |
4633 | puts_filtered ("Remote debugging using "); | |
4634 | puts_filtered (name); | |
4635 | puts_filtered ("\n"); | |
4636 | } | |
23860348 | 4637 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4638 | |
74531fed PA |
4639 | /* Register extra event sources in the event loop. */ |
4640 | remote_async_inferior_event_token | |
4641 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4642 | NULL); | |
5965e028 | 4643 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4644 | |
be2a5f71 DJ |
4645 | /* Reset the target state; these things will be queried either by |
4646 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4647 | reset_all_packet_configs_support (); |
74531fed | 4648 | rs->cached_wait_status = 0; |
be2a5f71 | 4649 | rs->explicit_packet_size = 0; |
a6f3e723 | 4650 | rs->noack_mode = 0; |
82f73884 | 4651 | rs->extended = extended_p; |
e24a49d8 | 4652 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4653 | rs->ctrlc_pending_p = 0; |
802188a7 | 4654 | |
47f8a51d TT |
4655 | rs->general_thread = not_sent_ptid; |
4656 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4657 | rs->remote_traceframe_number = -1; |
c906108c | 4658 | |
9d1f7ab2 | 4659 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4660 | rs->use_threadinfo_query = 1; |
4661 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4662 | |
80152258 PA |
4663 | readahead_cache_invalidate (); |
4664 | ||
c6ebd6cf | 4665 | if (target_async_permitted) |
92d1e331 | 4666 | { |
23860348 | 4667 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4668 | remote_async_terminal_ours_p = 1; |
4669 | ||
4670 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4671 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4672 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4673 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4674 | around this. Eventually a mechanism that allows |
92d1e331 | 4675 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4676 | implemented. */ |
92d1e331 DJ |
4677 | wait_forever_enabled_p = 0; |
4678 | } | |
4679 | ||
23860348 | 4680 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4681 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4682 | |
74531fed PA |
4683 | /* Start afresh. */ |
4684 | init_thread_list (); | |
4685 | ||
36918e70 | 4686 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4687 | target (we'd otherwise be in an inconsistent state) and then |
4688 | propogate the error on up the exception chain. This ensures that | |
4689 | the caller doesn't stumble along blindly assuming that the | |
4690 | function succeeded. The CLI doesn't have this problem but other | |
4691 | UI's, such as MI do. | |
36918e70 AC |
4692 | |
4693 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4694 | this function should return an error indication letting the | |
ce2826aa | 4695 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4696 | ``target remote'' is directly wired to this function making that |
4697 | impossible. On a positive note, the CLI side of this problem has | |
4698 | been fixed - the function set_cmd_context() makes it possible for | |
4699 | all the ``target ....'' commands to share a common callback | |
4700 | function. See cli-dump.c. */ | |
109c3e39 | 4701 | { |
2d717e4f | 4702 | |
492d29ea | 4703 | TRY |
04bd08de TT |
4704 | { |
4705 | remote_start_remote (from_tty, target, extended_p); | |
4706 | } | |
492d29ea | 4707 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4708 | { |
c8d104ad PA |
4709 | /* Pop the partially set up target - unless something else did |
4710 | already before throwing the exception. */ | |
5d93a237 | 4711 | if (rs->remote_desc != NULL) |
78a095c3 | 4712 | remote_unpush_target (); |
c6ebd6cf | 4713 | if (target_async_permitted) |
109c3e39 AC |
4714 | wait_forever_enabled_p = 1; |
4715 | throw_exception (ex); | |
4716 | } | |
492d29ea | 4717 | END_CATCH |
109c3e39 | 4718 | } |
c906108c | 4719 | |
f4abbc16 MM |
4720 | remote_btrace_reset (); |
4721 | ||
c6ebd6cf | 4722 | if (target_async_permitted) |
92d1e331 | 4723 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4724 | } |
4725 | ||
de0d863e DB |
4726 | /* Detach the specified process. */ |
4727 | ||
4728 | static void | |
4729 | remote_detach_pid (int pid) | |
4730 | { | |
4731 | struct remote_state *rs = get_remote_state (); | |
4732 | ||
4733 | if (remote_multi_process_p (rs)) | |
4734 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4735 | else | |
4736 | strcpy (rs->buf, "D"); | |
4737 | ||
4738 | putpkt (rs->buf); | |
4739 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4740 | ||
4741 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4742 | ; | |
4743 | else if (rs->buf[0] == '\0') | |
4744 | error (_("Remote doesn't know how to detach")); | |
4745 | else | |
4746 | error (_("Can't detach process.")); | |
4747 | } | |
4748 | ||
4749 | /* This detaches a program to which we previously attached, using | |
4750 | inferior_ptid to identify the process. After this is done, GDB | |
4751 | can be used to debug some other program. We better not have left | |
4752 | any breakpoints in the target program or it'll die when it hits | |
4753 | one. */ | |
c906108c SS |
4754 | |
4755 | static void | |
de0d863e | 4756 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4757 | { |
82f73884 | 4758 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4759 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4760 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4761 | int is_fork_parent; | |
c906108c SS |
4762 | |
4763 | if (args) | |
8a3fe4f8 | 4764 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4765 | |
2d717e4f DJ |
4766 | if (!target_has_execution) |
4767 | error (_("No process to detach from.")); | |
4768 | ||
7cee1e54 PA |
4769 | if (from_tty) |
4770 | { | |
4771 | char *exec_file = get_exec_file (0); | |
4772 | if (exec_file == NULL) | |
4773 | exec_file = ""; | |
4774 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4775 | target_pid_to_str (pid_to_ptid (pid))); | |
4776 | gdb_flush (gdb_stdout); | |
4777 | } | |
4778 | ||
c906108c | 4779 | /* Tell the remote target to detach. */ |
de0d863e | 4780 | remote_detach_pid (pid); |
82f73884 | 4781 | |
de0d863e | 4782 | if (from_tty && !rs->extended) |
7cee1e54 | 4783 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4784 | |
de0d863e DB |
4785 | /* Check to see if we are detaching a fork parent. Note that if we |
4786 | are detaching a fork child, tp == NULL. */ | |
4787 | is_fork_parent = (tp != NULL | |
4788 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4789 | ||
4790 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4791 | breakpoints that should be available for the followed inferior. */ | |
4792 | if (!is_fork_parent) | |
4793 | target_mourn_inferior (); | |
4794 | else | |
4795 | { | |
4796 | inferior_ptid = null_ptid; | |
4797 | detach_inferior (pid); | |
4798 | } | |
2d717e4f DJ |
4799 | } |
4800 | ||
4801 | static void | |
52554a0e | 4802 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4803 | { |
de0d863e | 4804 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4805 | } |
4806 | ||
4807 | static void | |
52554a0e | 4808 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4809 | { |
de0d863e DB |
4810 | remote_detach_1 (args, from_tty); |
4811 | } | |
4812 | ||
4813 | /* Target follow-fork function for remote targets. On entry, and | |
4814 | at return, the current inferior is the fork parent. | |
4815 | ||
4816 | Note that although this is currently only used for extended-remote, | |
4817 | it is named remote_follow_fork in anticipation of using it for the | |
4818 | remote target as well. */ | |
4819 | ||
4820 | static int | |
4821 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4822 | int detach_fork) | |
4823 | { | |
4824 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 4825 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 4826 | |
c269dbdb DB |
4827 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
4828 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
4829 | { |
4830 | /* When following the parent and detaching the child, we detach | |
4831 | the child here. For the case of following the child and | |
4832 | detaching the parent, the detach is done in the target- | |
4833 | independent follow fork code in infrun.c. We can't use | |
4834 | target_detach when detaching an unfollowed child because | |
4835 | the client side doesn't know anything about the child. */ | |
4836 | if (detach_fork && !follow_child) | |
4837 | { | |
4838 | /* Detach the fork child. */ | |
4839 | ptid_t child_ptid; | |
4840 | pid_t child_pid; | |
4841 | ||
4842 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4843 | child_pid = ptid_get_pid (child_ptid); | |
4844 | ||
4845 | remote_detach_pid (child_pid); | |
4846 | detach_inferior (child_pid); | |
4847 | } | |
4848 | } | |
4849 | return 0; | |
c906108c SS |
4850 | } |
4851 | ||
94585166 DB |
4852 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
4853 | in the program space of the new inferior. On entry and at return the | |
4854 | current inferior is the exec'ing inferior. INF is the new exec'd | |
4855 | inferior, which may be the same as the exec'ing inferior unless | |
4856 | follow-exec-mode is "new". */ | |
4857 | ||
4858 | static void | |
4859 | remote_follow_exec (struct target_ops *ops, | |
4860 | struct inferior *inf, char *execd_pathname) | |
4861 | { | |
4862 | /* We know that this is a target file name, so if it has the "target:" | |
4863 | prefix we strip it off before saving it in the program space. */ | |
4864 | if (is_target_filename (execd_pathname)) | |
4865 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
4866 | ||
4867 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
4868 | } | |
4869 | ||
6ad8ae5c DJ |
4870 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4871 | ||
43ff13b4 | 4872 | static void |
fee354ee | 4873 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4874 | { |
43ff13b4 | 4875 | if (args) |
2d717e4f | 4876 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4877 | |
2d717e4f | 4878 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4879 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4880 | target_mourn_inferior. */ |
20f796c9 | 4881 | remote_mourn (target); |
2d717e4f | 4882 | |
43ff13b4 JM |
4883 | if (from_tty) |
4884 | puts_filtered ("Ending remote debugging.\n"); | |
4885 | } | |
4886 | ||
2d717e4f DJ |
4887 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4888 | be chatty about it. */ | |
4889 | ||
4890 | static void | |
20f796c9 GB |
4891 | extended_remote_attach (struct target_ops *target, const char *args, |
4892 | int from_tty) | |
2d717e4f DJ |
4893 | { |
4894 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4895 | int pid; |
96ef3384 | 4896 | char *wait_status = NULL; |
2d717e4f | 4897 | |
74164c56 | 4898 | pid = parse_pid_to_attach (args); |
2d717e4f | 4899 | |
74164c56 JK |
4900 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4901 | way as in other targets. */ | |
2d717e4f | 4902 | |
4082afcc | 4903 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4904 | error (_("This target does not support attaching to a process")); |
4905 | ||
7cee1e54 PA |
4906 | if (from_tty) |
4907 | { | |
4908 | char *exec_file = get_exec_file (0); | |
4909 | ||
4910 | if (exec_file) | |
4911 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4912 | target_pid_to_str (pid_to_ptid (pid))); | |
4913 | else | |
4914 | printf_unfiltered (_("Attaching to %s\n"), | |
4915 | target_pid_to_str (pid_to_ptid (pid))); | |
4916 | ||
4917 | gdb_flush (gdb_stdout); | |
4918 | } | |
4919 | ||
bba74b36 | 4920 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4921 | putpkt (rs->buf); |
4922 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4923 | ||
4082afcc PA |
4924 | switch (packet_ok (rs->buf, |
4925 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4926 | { |
4082afcc | 4927 | case PACKET_OK: |
74531fed PA |
4928 | if (!non_stop) |
4929 | { | |
4930 | /* Save the reply for later. */ | |
4931 | wait_status = alloca (strlen (rs->buf) + 1); | |
4932 | strcpy (wait_status, rs->buf); | |
4933 | } | |
4934 | else if (strcmp (rs->buf, "OK") != 0) | |
4935 | error (_("Attaching to %s failed with: %s"), | |
4936 | target_pid_to_str (pid_to_ptid (pid)), | |
4937 | rs->buf); | |
4082afcc PA |
4938 | break; |
4939 | case PACKET_UNKNOWN: | |
4940 | error (_("This target does not support attaching to a process")); | |
4941 | default: | |
4942 | error (_("Attaching to %s failed"), | |
4943 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4944 | } |
2d717e4f | 4945 | |
1b6e6f5c | 4946 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4947 | |
2d717e4f | 4948 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4949 | |
bad34192 PA |
4950 | if (non_stop) |
4951 | { | |
4952 | struct thread_info *thread; | |
79d7f229 | 4953 | |
bad34192 | 4954 | /* Get list of threads. */ |
e8032dde | 4955 | remote_update_thread_list (target); |
82f73884 | 4956 | |
bad34192 PA |
4957 | thread = first_thread_of_process (pid); |
4958 | if (thread) | |
4959 | inferior_ptid = thread->ptid; | |
4960 | else | |
4961 | inferior_ptid = pid_to_ptid (pid); | |
4962 | ||
4963 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4964 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4965 | } |
74531fed | 4966 | else |
bad34192 PA |
4967 | { |
4968 | /* Now, if we have thread information, update inferior_ptid. */ | |
4969 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4970 | ||
4971 | /* Add the main thread to the thread list. */ | |
4972 | add_thread_silent (inferior_ptid); | |
4973 | } | |
c0a2216e | 4974 | |
96ef3384 UW |
4975 | /* Next, if the target can specify a description, read it. We do |
4976 | this before anything involving memory or registers. */ | |
4977 | target_find_description (); | |
4978 | ||
74531fed PA |
4979 | if (!non_stop) |
4980 | { | |
4981 | /* Use the previously fetched status. */ | |
4982 | gdb_assert (wait_status != NULL); | |
4983 | ||
4984 | if (target_can_async_p ()) | |
4985 | { | |
722247f1 YQ |
4986 | struct notif_event *reply |
4987 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4988 | |
722247f1 | 4989 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4990 | |
6a3753b3 | 4991 | target_async (1); |
74531fed PA |
4992 | } |
4993 | else | |
4994 | { | |
4995 | gdb_assert (wait_status != NULL); | |
4996 | strcpy (rs->buf, wait_status); | |
4997 | rs->cached_wait_status = 1; | |
4998 | } | |
4999 | } | |
5000 | else | |
5001 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5002 | } |
5003 | ||
b9c1d481 AS |
5004 | /* Implementation of the to_post_attach method. */ |
5005 | ||
5006 | static void | |
5007 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5008 | { | |
5009 | /* In certain cases GDB might not have had the chance to start | |
5010 | symbol lookup up until now. This could happen if the debugged | |
5011 | binary is not using shared libraries, the vsyscall page is not | |
5012 | present (on Linux) and the binary itself hadn't changed since the | |
5013 | debugging process was started. */ | |
5014 | if (symfile_objfile != NULL) | |
5015 | remote_check_symbols(); | |
5016 | } | |
5017 | ||
c906108c | 5018 | \f |
506fb367 DJ |
5019 | /* Check for the availability of vCont. This function should also check |
5020 | the response. */ | |
c906108c SS |
5021 | |
5022 | static void | |
6d820c5c | 5023 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5024 | { |
2e9f7625 | 5025 | char *buf; |
6d820c5c | 5026 | |
2e9f7625 DJ |
5027 | strcpy (rs->buf, "vCont?"); |
5028 | putpkt (rs->buf); | |
6d820c5c | 5029 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5030 | buf = rs->buf; |
c906108c | 5031 | |
506fb367 | 5032 | /* Make sure that the features we assume are supported. */ |
61012eef | 5033 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5034 | { |
5035 | char *p = &buf[5]; | |
5036 | int support_s, support_S, support_c, support_C; | |
5037 | ||
5038 | support_s = 0; | |
5039 | support_S = 0; | |
5040 | support_c = 0; | |
5041 | support_C = 0; | |
d458bd84 | 5042 | rs->supports_vCont.t = 0; |
c1e36e3e | 5043 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5044 | while (p && *p == ';') |
5045 | { | |
5046 | p++; | |
5047 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5048 | support_s = 1; | |
5049 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5050 | support_S = 1; | |
5051 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5052 | support_c = 1; | |
5053 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5054 | support_C = 1; | |
74531fed | 5055 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5056 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5057 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5058 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5059 | |
5060 | p = strchr (p, ';'); | |
5061 | } | |
c906108c | 5062 | |
506fb367 DJ |
5063 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
5064 | BUF will make packet_ok disable the packet. */ | |
5065 | if (!support_s || !support_S || !support_c || !support_C) | |
5066 | buf[0] = 0; | |
5067 | } | |
c906108c | 5068 | |
444abaca | 5069 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5070 | } |
c906108c | 5071 | |
0d8f58ca PA |
5072 | /* Helper function for building "vCont" resumptions. Write a |
5073 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5074 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5075 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5076 | resumed thread should be single-stepped and/or signalled. If PTID | |
5077 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5078 | represents a process, then all threads of the process are resumed; | |
5079 | the thread to be stepped and/or signalled is given in the global | |
5080 | INFERIOR_PTID. */ | |
5081 | ||
5082 | static char * | |
5083 | append_resumption (char *p, char *endp, | |
2ea28649 | 5084 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5085 | { |
5086 | struct remote_state *rs = get_remote_state (); | |
5087 | ||
a493e3e2 | 5088 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5089 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5090 | else if (step |
5091 | /* GDB is willing to range step. */ | |
5092 | && use_range_stepping | |
5093 | /* Target supports range stepping. */ | |
5094 | && rs->supports_vCont.r | |
5095 | /* We don't currently support range stepping multiple | |
5096 | threads with a wildcard (though the protocol allows it, | |
5097 | so stubs shouldn't make an active effort to forbid | |
5098 | it). */ | |
5099 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5100 | { | |
5101 | struct thread_info *tp; | |
5102 | ||
5103 | if (ptid_equal (ptid, minus_one_ptid)) | |
5104 | { | |
5105 | /* If we don't know about the target thread's tid, then | |
5106 | we're resuming magic_null_ptid (see caller). */ | |
5107 | tp = find_thread_ptid (magic_null_ptid); | |
5108 | } | |
5109 | else | |
5110 | tp = find_thread_ptid (ptid); | |
5111 | gdb_assert (tp != NULL); | |
5112 | ||
5113 | if (tp->control.may_range_step) | |
5114 | { | |
5115 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5116 | ||
5117 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5118 | phex_nz (tp->control.step_range_start, | |
5119 | addr_size), | |
5120 | phex_nz (tp->control.step_range_end, | |
5121 | addr_size)); | |
5122 | } | |
5123 | else | |
5124 | p += xsnprintf (p, endp - p, ";s"); | |
5125 | } | |
0d8f58ca PA |
5126 | else if (step) |
5127 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5128 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5129 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5130 | else | |
5131 | p += xsnprintf (p, endp - p, ";c"); | |
5132 | ||
5133 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5134 | { | |
5135 | ptid_t nptid; | |
5136 | ||
5137 | /* All (-1) threads of process. */ | |
ba348170 | 5138 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5139 | |
5140 | p += xsnprintf (p, endp - p, ":"); | |
5141 | p = write_ptid (p, endp, nptid); | |
5142 | } | |
5143 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5144 | { | |
5145 | p += xsnprintf (p, endp - p, ":"); | |
5146 | p = write_ptid (p, endp, ptid); | |
5147 | } | |
5148 | ||
5149 | return p; | |
5150 | } | |
5151 | ||
e5ef252a PA |
5152 | /* Append a vCont continue-with-signal action for threads that have a |
5153 | non-zero stop signal. */ | |
5154 | ||
5155 | static char * | |
5156 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5157 | { | |
5158 | struct thread_info *thread; | |
5159 | ||
034f788c | 5160 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5161 | if (ptid_match (thread->ptid, ptid) |
5162 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5163 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5164 | { |
5165 | p = append_resumption (p, endp, thread->ptid, | |
5166 | 0, thread->suspend.stop_signal); | |
5167 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
5168 | } | |
5169 | ||
5170 | return p; | |
5171 | } | |
5172 | ||
506fb367 DJ |
5173 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5174 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5175 | resumed thread should be single-stepped and/or signalled. If PTID |
5176 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5177 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5178 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5179 | |
506fb367 DJ |
5180 | This function issues a strict subset of all possible vCont commands at the |
5181 | moment. */ | |
44eaed12 | 5182 | |
506fb367 | 5183 | static int |
2ea28649 | 5184 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5185 | { |
5186 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5187 | char *p; |
5188 | char *endp; | |
44eaed12 | 5189 | |
4082afcc | 5190 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5191 | remote_vcont_probe (rs); |
44eaed12 | 5192 | |
4082afcc | 5193 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5194 | return 0; |
44eaed12 | 5195 | |
82f73884 PA |
5196 | p = rs->buf; |
5197 | endp = rs->buf + get_remote_packet_size (); | |
5198 | ||
506fb367 DJ |
5199 | /* If we could generate a wider range of packets, we'd have to worry |
5200 | about overflowing BUF. Should there be a generic | |
5201 | "multi-part-packet" packet? */ | |
5202 | ||
0d8f58ca PA |
5203 | p += xsnprintf (p, endp - p, "vCont"); |
5204 | ||
79d7f229 | 5205 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5206 | { |
79d7f229 PA |
5207 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5208 | so we don't have any TID numbers the inferior will | |
5209 | understand. Make sure to only send forms that do not specify | |
5210 | a TID. */ | |
a9cbf802 | 5211 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5212 | } |
0d8f58ca | 5213 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5214 | { |
0d8f58ca PA |
5215 | /* Resume all threads (of all processes, or of a single |
5216 | process), with preference for INFERIOR_PTID. This assumes | |
5217 | inferior_ptid belongs to the set of all threads we are about | |
5218 | to resume. */ | |
a493e3e2 | 5219 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5220 | { |
0d8f58ca PA |
5221 | /* Step inferior_ptid, with or without signal. */ |
5222 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5223 | } |
0d8f58ca | 5224 | |
e5ef252a PA |
5225 | /* Also pass down any pending signaled resumption for other |
5226 | threads not the current. */ | |
5227 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5228 | ||
0d8f58ca | 5229 | /* And continue others without a signal. */ |
a493e3e2 | 5230 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5231 | } |
5232 | else | |
506fb367 DJ |
5233 | { |
5234 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5235 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5236 | } |
c906108c | 5237 | |
82f73884 PA |
5238 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5239 | putpkt (rs->buf); | |
506fb367 | 5240 | |
74531fed PA |
5241 | if (non_stop) |
5242 | { | |
5243 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5244 | reply will be reported asynchronously by means of a `%Stop' | |
5245 | notification. */ | |
5246 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5247 | if (strcmp (rs->buf, "OK") != 0) | |
5248 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5249 | } | |
5250 | ||
506fb367 | 5251 | return 1; |
c906108c | 5252 | } |
43ff13b4 | 5253 | |
506fb367 DJ |
5254 | /* Tell the remote machine to resume. */ |
5255 | ||
43ff13b4 | 5256 | static void |
28439f5e | 5257 | remote_resume (struct target_ops *ops, |
2ea28649 | 5258 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5259 | { |
d01949b6 | 5260 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5261 | char *buf; |
43ff13b4 | 5262 | |
722247f1 YQ |
5263 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5264 | (explained in remote-notif.c:handle_notification) so | |
5265 | remote_notif_process is not called. We need find a place where | |
5266 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5267 | before resuming inferior, because inferior was stopped and no RSP | |
5268 | traffic at that moment. */ | |
5269 | if (!non_stop) | |
5965e028 | 5270 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5271 | |
b73be471 | 5272 | rs->last_sent_signal = siggnal; |
280ceea3 | 5273 | rs->last_sent_step = step; |
43ff13b4 | 5274 | |
506fb367 | 5275 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5276 | /* No reverse support (yet) for vCont. */ |
5277 | if (execution_direction != EXEC_REVERSE) | |
5278 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5279 | goto done; | |
506fb367 | 5280 | |
79d7f229 PA |
5281 | /* All other supported resume packets do use Hc, so set the continue |
5282 | thread. */ | |
5283 | if (ptid_equal (ptid, minus_one_ptid)) | |
5284 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5285 | else |
79d7f229 | 5286 | set_continue_thread (ptid); |
506fb367 | 5287 | |
2e9f7625 | 5288 | buf = rs->buf; |
b2175913 MS |
5289 | if (execution_direction == EXEC_REVERSE) |
5290 | { | |
5291 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5292 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5293 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5294 | siggnal); |
40ab02ce | 5295 | |
4082afcc | 5296 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5297 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5298 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5299 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5300 | |
b2175913 MS |
5301 | strcpy (buf, step ? "bs" : "bc"); |
5302 | } | |
a493e3e2 | 5303 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5304 | { |
5305 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5306 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5307 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5308 | buf[3] = '\0'; |
5309 | } | |
5310 | else | |
c5aa993b | 5311 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5312 | |
44eaed12 | 5313 | putpkt (buf); |
43ff13b4 | 5314 | |
75c99385 | 5315 | done: |
2acceee2 | 5316 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5317 | with the event loop. NOTE: this is the one place where all the |
5318 | execution commands end up. We could alternatively do this in each | |
23860348 | 5319 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5320 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5321 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5322 | NOT asynchronously. */ |
362646f5 | 5323 | if (target_can_async_p ()) |
6a3753b3 | 5324 | target_async (1); |
e24a49d8 PA |
5325 | |
5326 | /* We've just told the target to resume. The remote server will | |
5327 | wait for the inferior to stop, and then send a stop reply. In | |
5328 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5329 | because the stub wouldn't be ready to process it. This applies |
5330 | only to the base all-stop protocol, however. In non-stop (which | |
5331 | only supports vCont), the stub replies with an "OK", and is | |
5332 | immediate able to process further serial input. */ | |
5333 | if (!non_stop) | |
5334 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5335 | } |
c906108c | 5336 | \f |
43ff13b4 JM |
5337 | |
5338 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5339 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5340 | static void |
934b9bac | 5341 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5342 | { |
934b9bac | 5343 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5344 | } |
5345 | ||
23860348 | 5346 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5347 | static void |
934b9bac | 5348 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5349 | { |
934b9bac | 5350 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5351 | /* Note we need to go through gdb_call_async_signal_handler in order |
5352 | to wake up the event loop on Windows. */ | |
5353 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5354 | } |
5355 | ||
5356 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5357 | sent once. It will take effect the second time that the user sends | |
23860348 | 5358 | a ^C. */ |
43ff13b4 | 5359 | static void |
934b9bac | 5360 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5361 | { |
934b9bac | 5362 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5363 | /* See note in async_handle_remote_sigint. */ |
5364 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5365 | } |
5366 | ||
abc56d60 PA |
5367 | /* Implementation of to_check_pending_interrupt. */ |
5368 | ||
5369 | static void | |
5370 | remote_check_pending_interrupt (struct target_ops *self) | |
5371 | { | |
5372 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5373 | ||
5374 | if (async_signal_handler_is_marked (token)) | |
5375 | { | |
5376 | clear_async_signal_handler (token); | |
5377 | call_async_signal_handler (token); | |
5378 | } | |
5379 | } | |
5380 | ||
6426a772 | 5381 | /* Perform the real interruption of the target execution, in response |
23860348 | 5382 | to a ^C. */ |
c5aa993b | 5383 | static void |
fba45db2 | 5384 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5385 | { |
5386 | if (remote_debug) | |
248fd3bf | 5387 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5388 | |
94cc34af | 5389 | target_stop (inferior_ptid); |
43ff13b4 JM |
5390 | } |
5391 | ||
0df8b418 | 5392 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5393 | up on the target alltogether. */ |
47e1ce27 | 5394 | static void |
fba45db2 | 5395 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5396 | { |
2df3850c | 5397 | if (remote_debug) |
248fd3bf | 5398 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5399 | |
5400 | interrupt_query (); | |
43ff13b4 JM |
5401 | } |
5402 | ||
5403 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5404 | stopped. */ |
6426a772 | 5405 | static void |
934b9bac | 5406 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5407 | { |
5408 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5409 | } |
5410 | ||
c906108c SS |
5411 | /* Send ^C to target to halt it. Target will respond, and send us a |
5412 | packet. */ | |
507f3c78 | 5413 | static void (*ofunc) (int); |
c906108c | 5414 | |
bfedc46a PA |
5415 | /* The command line interface's interrupt routine. This function is installed |
5416 | as a signal handler for SIGINT. The first time a user requests an | |
5417 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5418 | response from the target (it didn't stop when the user requested it), |
23860348 | 5419 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5420 | |
c906108c | 5421 | static void |
934b9bac | 5422 | sync_remote_interrupt (int signo) |
c906108c | 5423 | { |
23860348 | 5424 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5425 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5426 | |
934b9bac | 5427 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5428 | } |
5429 | ||
5430 | /* The user typed ^C twice. */ | |
5431 | ||
5432 | static void | |
934b9bac | 5433 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5434 | { |
5435 | signal (signo, ofunc); | |
934b9bac JK |
5436 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5437 | signal (signo, sync_remote_interrupt); | |
c906108c | 5438 | } |
7a292a7a | 5439 | |
74531fed PA |
5440 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5441 | thread, all threads of a remote process, or all threads of all | |
5442 | processes. */ | |
5443 | ||
5444 | static void | |
5445 | remote_stop_ns (ptid_t ptid) | |
5446 | { | |
5447 | struct remote_state *rs = get_remote_state (); | |
5448 | char *p = rs->buf; | |
5449 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5450 | |
4082afcc | 5451 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5452 | remote_vcont_probe (rs); |
5453 | ||
d458bd84 | 5454 | if (!rs->supports_vCont.t) |
74531fed PA |
5455 | error (_("Remote server does not support stopping threads")); |
5456 | ||
f91d3df5 PA |
5457 | if (ptid_equal (ptid, minus_one_ptid) |
5458 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5459 | p += xsnprintf (p, endp - p, "vCont;t"); |
5460 | else | |
5461 | { | |
5462 | ptid_t nptid; | |
5463 | ||
74531fed PA |
5464 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5465 | ||
5466 | if (ptid_is_pid (ptid)) | |
5467 | /* All (-1) threads of process. */ | |
ba348170 | 5468 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5469 | else |
5470 | { | |
5471 | /* Small optimization: if we already have a stop reply for | |
5472 | this thread, no use in telling the stub we want this | |
5473 | stopped. */ | |
5474 | if (peek_stop_reply (ptid)) | |
5475 | return; | |
5476 | ||
5477 | nptid = ptid; | |
5478 | } | |
5479 | ||
a9cbf802 | 5480 | write_ptid (p, endp, nptid); |
74531fed PA |
5481 | } |
5482 | ||
5483 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5484 | come in asynchronously by notification. */ | |
5485 | putpkt (rs->buf); | |
5486 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5487 | if (strcmp (rs->buf, "OK") != 0) | |
5488 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5489 | } | |
5490 | ||
bfedc46a PA |
5491 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5492 | interrupt the remote target. It is undefined which thread of which | |
5493 | process reports the interrupt. */ | |
74531fed PA |
5494 | |
5495 | static void | |
bfedc46a | 5496 | remote_interrupt_as (ptid_t ptid) |
74531fed PA |
5497 | { |
5498 | struct remote_state *rs = get_remote_state (); | |
5499 | ||
3a29589a DJ |
5500 | rs->ctrlc_pending_p = 1; |
5501 | ||
74531fed PA |
5502 | /* If the inferior is stopped already, but the core didn't know |
5503 | about it yet, just ignore the request. The cached wait status | |
5504 | will be collected in remote_wait. */ | |
5505 | if (rs->cached_wait_status) | |
5506 | return; | |
5507 | ||
9a7071a8 JB |
5508 | /* Send interrupt_sequence to remote target. */ |
5509 | send_interrupt_sequence (); | |
74531fed PA |
5510 | } |
5511 | ||
bfedc46a | 5512 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5513 | |
c906108c | 5514 | static void |
1eab8a48 | 5515 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5516 | { |
7a292a7a | 5517 | if (remote_debug) |
0f71a2f6 | 5518 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5519 | |
74531fed PA |
5520 | if (non_stop) |
5521 | remote_stop_ns (ptid); | |
c906108c | 5522 | else |
bfedc46a PA |
5523 | { |
5524 | /* We don't currently have a way to transparently pause the | |
5525 | remote target in all-stop mode. Interrupt it instead. */ | |
5526 | remote_interrupt_as (ptid); | |
5527 | } | |
5528 | } | |
5529 | ||
5530 | /* Implement the to_interrupt function for the remote targets. */ | |
5531 | ||
5532 | static void | |
5533 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5534 | { | |
5535 | if (remote_debug) | |
5536 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5537 | ||
5538 | if (non_stop) | |
5539 | { | |
5540 | /* We don't currently have a way to ^C the remote target in | |
5541 | non-stop mode. Stop it (with no signal) instead. */ | |
5542 | remote_stop_ns (ptid); | |
5543 | } | |
5544 | else | |
5545 | remote_interrupt_as (ptid); | |
c906108c SS |
5546 | } |
5547 | ||
5548 | /* Ask the user what to do when an interrupt is received. */ | |
5549 | ||
5550 | static void | |
fba45db2 | 5551 | interrupt_query (void) |
c906108c | 5552 | { |
abc56d60 PA |
5553 | struct remote_state *rs = get_remote_state (); |
5554 | struct cleanup *old_chain; | |
5555 | ||
5556 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5557 | target_terminal_ours (); |
5558 | ||
abc56d60 | 5559 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5560 | { |
abc56d60 PA |
5561 | if (query (_("The target is not responding to interrupt requests.\n" |
5562 | "Stop debugging it? "))) | |
74531fed | 5563 | { |
78a095c3 | 5564 | remote_unpush_target (); |
abc56d60 | 5565 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5566 | } |
5567 | } | |
abc56d60 PA |
5568 | else |
5569 | { | |
5570 | if (query (_("Interrupted while waiting for the program.\n" | |
5571 | "Give up waiting? "))) | |
5572 | quit (); | |
5573 | } | |
c906108c | 5574 | |
abc56d60 | 5575 | do_cleanups (old_chain); |
c906108c SS |
5576 | } |
5577 | ||
6426a772 JM |
5578 | /* Enable/disable target terminal ownership. Most targets can use |
5579 | terminal groups to control terminal ownership. Remote targets are | |
5580 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5581 | is required. */ |
6426a772 JM |
5582 | |
5583 | static void | |
d2f640d4 | 5584 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5585 | { |
c6ebd6cf | 5586 | if (!target_async_permitted) |
75c99385 PA |
5587 | /* Nothing to do. */ |
5588 | return; | |
5589 | ||
d9d2d8b6 PA |
5590 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5591 | idempotent. The event-loop GDB talking to an asynchronous target | |
5592 | with a synchronous command calls this function from both | |
5593 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5594 | transfer the terminal to the target when it shouldn't this guard | |
5595 | can go away. */ | |
6426a772 JM |
5596 | if (!remote_async_terminal_ours_p) |
5597 | return; | |
5598 | delete_file_handler (input_fd); | |
5599 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5600 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5601 | /* NOTE: At this point we could also register our selves as the |
5602 | recipient of all input. Any characters typed could then be | |
23860348 | 5603 | passed on down to the target. */ |
6426a772 JM |
5604 | } |
5605 | ||
5606 | static void | |
e3594fd1 | 5607 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5608 | { |
c6ebd6cf | 5609 | if (!target_async_permitted) |
75c99385 PA |
5610 | /* Nothing to do. */ |
5611 | return; | |
5612 | ||
5613 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5614 | if (remote_async_terminal_ours_p) |
5615 | return; | |
934b9bac | 5616 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5617 | add_file_handler (input_fd, stdin_event_handler, 0); |
5618 | remote_async_terminal_ours_p = 1; | |
5619 | } | |
5620 | ||
176a6961 | 5621 | static void |
917317f4 | 5622 | remote_console_output (char *msg) |
c906108c SS |
5623 | { |
5624 | char *p; | |
5625 | ||
c5aa993b | 5626 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5627 | { |
5628 | char tb[2]; | |
5629 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5630 | |
c906108c SS |
5631 | tb[0] = c; |
5632 | tb[1] = 0; | |
43ff13b4 | 5633 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5634 | } |
00db5b94 PA |
5635 | gdb_flush (gdb_stdtarg); |
5636 | } | |
74531fed PA |
5637 | |
5638 | typedef struct cached_reg | |
5639 | { | |
5640 | int num; | |
5641 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5642 | } cached_reg_t; | |
5643 | ||
5644 | DEF_VEC_O(cached_reg_t); | |
5645 | ||
722247f1 | 5646 | typedef struct stop_reply |
74531fed | 5647 | { |
722247f1 | 5648 | struct notif_event base; |
74531fed | 5649 | |
722247f1 | 5650 | /* The identifier of the thread about this event */ |
74531fed PA |
5651 | ptid_t ptid; |
5652 | ||
340e3c99 | 5653 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5654 | connection, represented by a remote_state object, is closed, |
5655 | all the associated stop_reply events should be released. */ | |
5656 | struct remote_state *rs; | |
5657 | ||
74531fed PA |
5658 | struct target_waitstatus ws; |
5659 | ||
15148d6a PA |
5660 | /* Expedited registers. This makes remote debugging a bit more |
5661 | efficient for those targets that provide critical registers as | |
5662 | part of their normal status mechanism (as another roundtrip to | |
5663 | fetch them is avoided). */ | |
74531fed PA |
5664 | VEC(cached_reg_t) *regcache; |
5665 | ||
f7e6eed5 PA |
5666 | enum target_stop_reason stop_reason; |
5667 | ||
74531fed PA |
5668 | CORE_ADDR watch_data_address; |
5669 | ||
dc146f7c | 5670 | int core; |
722247f1 | 5671 | } *stop_reply_p; |
a744cf53 | 5672 | |
722247f1 YQ |
5673 | DECLARE_QUEUE_P (stop_reply_p); |
5674 | DEFINE_QUEUE_P (stop_reply_p); | |
5675 | /* The list of already fetched and acknowledged stop events. This | |
5676 | queue is used for notification Stop, and other notifications | |
5677 | don't need queue for their events, because the notification events | |
5678 | of Stop can't be consumed immediately, so that events should be | |
5679 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5680 | time. Other notifications can consume their events immediately, | |
5681 | so queue is not needed for them. */ | |
5682 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5683 | |
5684 | static void | |
5685 | stop_reply_xfree (struct stop_reply *r) | |
5686 | { | |
f48ff2a7 | 5687 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5688 | } |
5689 | ||
221e1a37 PA |
5690 | /* Return the length of the stop reply queue. */ |
5691 | ||
5692 | static int | |
5693 | stop_reply_queue_length (void) | |
5694 | { | |
5695 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
5696 | } | |
5697 | ||
722247f1 YQ |
5698 | static void |
5699 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5700 | struct notif_event *event) | |
5701 | { | |
5702 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5703 | } | |
5704 | ||
5705 | static void | |
5706 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5707 | struct notif_event *event) | |
5708 | { | |
5709 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5710 | ||
5711 | /* acknowledge */ | |
5712 | putpkt ((char *) self->ack_command); | |
5713 | ||
5714 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5715 | /* We got an unknown stop reply. */ | |
5716 | error (_("Unknown stop reply")); | |
5717 | ||
5718 | push_stop_reply (stop_reply); | |
5719 | } | |
5720 | ||
5721 | static int | |
5722 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5723 | { | |
5724 | /* We can't get pending events in remote_notif_process for | |
5725 | notification stop, and we have to do this in remote_wait_ns | |
5726 | instead. If we fetch all queued events from stub, remote stub | |
5727 | may exit and we have no chance to process them back in | |
5728 | remote_wait_ns. */ | |
5729 | mark_async_event_handler (remote_async_inferior_event_token); | |
5730 | return 0; | |
5731 | } | |
5732 | ||
5733 | static void | |
5734 | stop_reply_dtr (struct notif_event *event) | |
5735 | { | |
5736 | struct stop_reply *r = (struct stop_reply *) event; | |
5737 | ||
5738 | VEC_free (cached_reg_t, r->regcache); | |
5739 | } | |
5740 | ||
5741 | static struct notif_event * | |
5742 | remote_notif_stop_alloc_reply (void) | |
5743 | { | |
8d749320 SM |
5744 | /* We cast to a pointer to the "base class". */ |
5745 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
5746 | |
5747 | r->dtr = stop_reply_dtr; | |
5748 | ||
5749 | return r; | |
5750 | } | |
5751 | ||
5752 | /* A client of notification Stop. */ | |
5753 | ||
5754 | struct notif_client notif_client_stop = | |
5755 | { | |
5756 | "Stop", | |
5757 | "vStopped", | |
5758 | remote_notif_stop_parse, | |
5759 | remote_notif_stop_ack, | |
5760 | remote_notif_stop_can_get_pending_events, | |
5761 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5762 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5763 | }; |
5764 | ||
5765 | /* A parameter to pass data in and out. */ | |
5766 | ||
5767 | struct queue_iter_param | |
5768 | { | |
5769 | void *input; | |
5770 | struct stop_reply *output; | |
5771 | }; | |
5772 | ||
cbb8991c DB |
5773 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5774 | the pid of the process that owns the threads we want to check, or | |
5775 | -1 if we want to check all threads. */ | |
5776 | ||
5777 | static int | |
5778 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5779 | ptid_t thread_ptid) | |
5780 | { | |
5781 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5782 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5783 | { | |
5784 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5785 | return 1; | |
5786 | } | |
5787 | ||
5788 | return 0; | |
5789 | } | |
5790 | ||
5791 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5792 | fork child from the context list passed in DATA. */ | |
5793 | ||
5794 | static int | |
5795 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5796 | QUEUE_ITER (stop_reply_p) *iter, | |
5797 | stop_reply_p event, | |
5798 | void *data) | |
5799 | { | |
5800 | struct queue_iter_param *param = data; | |
5801 | struct threads_listing_context *context = param->input; | |
5802 | ||
5803 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5804 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5805 | { | |
5806 | threads_listing_context_remove (&event->ws, context); | |
5807 | } | |
5808 | ||
5809 | return 1; | |
5810 | } | |
5811 | ||
5812 | /* If CONTEXT contains any fork child threads that have not been | |
5813 | reported yet, remove them from the CONTEXT list. If such a | |
5814 | thread exists it is because we are stopped at a fork catchpoint | |
5815 | and have not yet called follow_fork, which will set up the | |
5816 | host-side data structures for the new process. */ | |
5817 | ||
5818 | static void | |
5819 | remove_new_fork_children (struct threads_listing_context *context) | |
5820 | { | |
5821 | struct thread_info * thread; | |
5822 | int pid = -1; | |
5823 | struct notif_client *notif = ¬if_client_stop; | |
5824 | struct queue_iter_param param; | |
5825 | ||
5826 | /* For any threads stopped at a fork event, remove the corresponding | |
5827 | fork child threads from the CONTEXT list. */ | |
5828 | ALL_NON_EXITED_THREADS (thread) | |
5829 | { | |
5830 | struct target_waitstatus *ws = &thread->pending_follow; | |
5831 | ||
5832 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5833 | { | |
5834 | threads_listing_context_remove (ws, context); | |
5835 | } | |
5836 | } | |
5837 | ||
5838 | /* Check for any pending fork events (not reported or processed yet) | |
5839 | in process PID and remove those fork child threads from the | |
5840 | CONTEXT list as well. */ | |
5841 | remote_notif_get_pending_events (notif); | |
5842 | param.input = context; | |
5843 | param.output = NULL; | |
5844 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5845 | remove_child_of_pending_fork, ¶m); | |
5846 | } | |
5847 | ||
f48ff2a7 YQ |
5848 | /* Remove stop replies in the queue if its pid is equal to the given |
5849 | inferior's pid. */ | |
722247f1 YQ |
5850 | |
5851 | static int | |
f48ff2a7 YQ |
5852 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5853 | QUEUE_ITER (stop_reply_p) *iter, | |
5854 | stop_reply_p event, | |
5855 | void *data) | |
722247f1 YQ |
5856 | { |
5857 | struct queue_iter_param *param = data; | |
5858 | struct inferior *inf = param->input; | |
5859 | ||
f48ff2a7 | 5860 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5861 | { |
5862 | stop_reply_xfree (event); | |
5863 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5864 | } | |
5865 | ||
5866 | return 1; | |
5867 | } | |
5868 | ||
f48ff2a7 | 5869 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5870 | |
74531fed | 5871 | static void |
5f4cf0bb | 5872 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5873 | { |
722247f1 YQ |
5874 | int i; |
5875 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5876 | struct stop_reply *reply; |
5877 | struct remote_state *rs = get_remote_state (); | |
5878 | struct remote_notif_state *rns = rs->notif_state; | |
5879 | ||
5880 | /* This function can be notified when an inferior exists. When the | |
5881 | target is not remote, the notification state is NULL. */ | |
5882 | if (rs->remote_desc == NULL) | |
5883 | return; | |
5884 | ||
5885 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5886 | |
74531fed | 5887 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5888 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5889 | { |
722247f1 | 5890 | stop_reply_xfree (reply); |
f48ff2a7 | 5891 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5892 | } |
c906108c | 5893 | |
722247f1 YQ |
5894 | param.input = inf; |
5895 | param.output = NULL; | |
74531fed PA |
5896 | /* Discard the stop replies we have already pulled with |
5897 | vStopped. */ | |
722247f1 | 5898 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5899 | remove_stop_reply_for_inferior, ¶m); |
5900 | } | |
5901 | ||
bcc75809 YQ |
5902 | /* If its remote state is equal to the given remote state, |
5903 | remove EVENT from the stop reply queue. */ | |
5904 | ||
5905 | static int | |
5906 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5907 | QUEUE_ITER (stop_reply_p) *iter, | |
5908 | stop_reply_p event, | |
5909 | void *data) | |
5910 | { | |
5911 | struct queue_iter_param *param = data; | |
5912 | struct remote_state *rs = param->input; | |
5913 | ||
5914 | if (event->rs == rs) | |
5915 | { | |
5916 | stop_reply_xfree (event); | |
5917 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5918 | } | |
5919 | ||
5920 | return 1; | |
5921 | } | |
5922 | ||
5923 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5924 | |
5925 | static void | |
bcc75809 | 5926 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5927 | { |
5928 | struct queue_iter_param param; | |
5929 | ||
bcc75809 | 5930 | param.input = rs; |
f48ff2a7 YQ |
5931 | param.output = NULL; |
5932 | /* Discard the stop replies we have already pulled with | |
5933 | vStopped. */ | |
5934 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5935 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5936 | } |
74531fed | 5937 | |
722247f1 YQ |
5938 | /* A parameter to pass data in and out. */ |
5939 | ||
5940 | static int | |
5941 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5942 | QUEUE_ITER (stop_reply_p) *iter, | |
5943 | stop_reply_p event, | |
5944 | void *data) | |
5945 | { | |
5946 | struct queue_iter_param *param = data; | |
5947 | ptid_t *ptid = param->input; | |
5948 | ||
5949 | if (ptid_match (event->ptid, *ptid)) | |
5950 | { | |
5951 | param->output = event; | |
5952 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5953 | return 0; | |
c8e38a49 | 5954 | } |
722247f1 YQ |
5955 | |
5956 | return 1; | |
74531fed | 5957 | } |
43ff13b4 | 5958 | |
722247f1 YQ |
5959 | /* Remove the first reply in 'stop_reply_queue' which matches |
5960 | PTID. */ | |
2e9f7625 | 5961 | |
722247f1 YQ |
5962 | static struct stop_reply * |
5963 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5964 | { |
722247f1 YQ |
5965 | struct queue_iter_param param; |
5966 | ||
5967 | param.input = &ptid; | |
5968 | param.output = NULL; | |
5969 | ||
5970 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5971 | remote_notif_remove_once_on_match, ¶m); | |
5972 | if (notif_debug) | |
5973 | fprintf_unfiltered (gdb_stdlog, | |
5974 | "notif: discard queued event: 'Stop' in %s\n", | |
5975 | target_pid_to_str (ptid)); | |
a744cf53 | 5976 | |
722247f1 | 5977 | return param.output; |
74531fed | 5978 | } |
75c99385 | 5979 | |
74531fed PA |
5980 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5981 | remove it from the queue, and return it. Returns NULL if none is | |
5982 | found. If there are still queued events left to process, tell the | |
5983 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5984 | |
74531fed PA |
5985 | static struct stop_reply * |
5986 | queued_stop_reply (ptid_t ptid) | |
5987 | { | |
722247f1 | 5988 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5989 | |
722247f1 | 5990 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5991 | /* There's still at least an event left. */ |
5992 | mark_async_event_handler (remote_async_inferior_event_token); | |
5993 | ||
722247f1 | 5994 | return r; |
74531fed PA |
5995 | } |
5996 | ||
5997 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5998 | know that we now have at least one queued event left to pass to the | |
5999 | core side, tell the event loop to get back to target_wait soon. */ | |
6000 | ||
6001 | static void | |
6002 | push_stop_reply (struct stop_reply *new_event) | |
6003 | { | |
722247f1 | 6004 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6005 | |
722247f1 YQ |
6006 | if (notif_debug) |
6007 | fprintf_unfiltered (gdb_stdlog, | |
6008 | "notif: push 'Stop' %s to queue %d\n", | |
6009 | target_pid_to_str (new_event->ptid), | |
6010 | QUEUE_length (stop_reply_p, | |
6011 | stop_reply_queue)); | |
74531fed PA |
6012 | |
6013 | mark_async_event_handler (remote_async_inferior_event_token); | |
6014 | } | |
6015 | ||
722247f1 YQ |
6016 | static int |
6017 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6018 | QUEUE_ITER (stop_reply_p) *iter, | |
6019 | struct stop_reply *event, | |
6020 | void *data) | |
6021 | { | |
6022 | ptid_t *ptid = data; | |
6023 | ||
6024 | return !(ptid_equal (*ptid, event->ptid) | |
6025 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6026 | } | |
6027 | ||
74531fed PA |
6028 | /* Returns true if we have a stop reply for PTID. */ |
6029 | ||
6030 | static int | |
6031 | peek_stop_reply (ptid_t ptid) | |
6032 | { | |
722247f1 YQ |
6033 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6034 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6035 | } |
6036 | ||
1f10ba14 PA |
6037 | /* Skip PACKET until the next semi-colon (or end of string). */ |
6038 | ||
6039 | static char * | |
6040 | skip_to_semicolon (char *p) | |
6041 | { | |
6042 | while (*p != '\0' && *p != ';') | |
6043 | p++; | |
6044 | return p; | |
6045 | } | |
6046 | ||
26d56a93 SL |
6047 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6048 | starting with P and ending with PEND matches PREFIX. */ | |
6049 | ||
6050 | static int | |
6051 | strprefix (const char *p, const char *pend, const char *prefix) | |
6052 | { | |
6053 | for ( ; p < pend; p++, prefix++) | |
6054 | if (*p != *prefix) | |
6055 | return 0; | |
6056 | return *prefix == '\0'; | |
6057 | } | |
6058 | ||
74531fed PA |
6059 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6060 | result is stored in EVENT, or throws an error. */ | |
6061 | ||
6062 | static void | |
6063 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6064 | { | |
6065 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6066 | ULONGEST addr; | |
6067 | char *p; | |
94585166 | 6068 | int skipregs = 0; |
74531fed PA |
6069 | |
6070 | event->ptid = null_ptid; | |
bcc75809 | 6071 | event->rs = get_remote_state (); |
74531fed PA |
6072 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6073 | event->ws.value.integer = 0; | |
f7e6eed5 | 6074 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6075 | event->regcache = NULL; |
dc146f7c | 6076 | event->core = -1; |
74531fed PA |
6077 | |
6078 | switch (buf[0]) | |
6079 | { | |
6080 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6081 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6082 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6083 | ss = signal number | |
6084 | n... = register number | |
6085 | r... = register contents | |
6086 | */ | |
6087 | ||
6088 | p = &buf[3]; /* after Txx */ | |
6089 | while (*p) | |
6090 | { | |
6091 | char *p1; | |
cea39f65 | 6092 | int fieldsize; |
43ff13b4 | 6093 | |
1f10ba14 PA |
6094 | p1 = strchr (p, ':'); |
6095 | if (p1 == NULL) | |
6096 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6097 | Packet: '%s'\n"), | |
6098 | p, buf); | |
6099 | if (p == p1) | |
6100 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6101 | Packet: '%s'\n"), | |
6102 | p, buf); | |
3c3bea1c | 6103 | |
1f10ba14 PA |
6104 | /* Some "registers" are actually extended stop information. |
6105 | Note if you're adding a new entry here: GDB 7.9 and | |
6106 | earlier assume that all register "numbers" that start | |
6107 | with an hex digit are real register numbers. Make sure | |
6108 | the server only sends such a packet if it knows the | |
6109 | client understands it. */ | |
c8e38a49 | 6110 | |
26d56a93 | 6111 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6112 | event->ptid = read_ptid (++p1, &p); |
26d56a93 SL |
6113 | else if (strprefix (p, p1, "watch") |
6114 | || strprefix (p, p1, "rwatch") | |
6115 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6116 | { |
f7e6eed5 | 6117 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6118 | p = unpack_varlen_hex (++p1, &addr); |
6119 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6120 | } |
26d56a93 | 6121 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6122 | { |
6123 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6124 | ||
6125 | /* Make sure the stub doesn't forget to indicate support | |
6126 | with qSupported. */ | |
6127 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6128 | error (_("Unexpected swbreak stop reason")); | |
6129 | ||
6130 | /* The value part is documented as "must be empty", | |
6131 | though we ignore it, in case we ever decide to make | |
6132 | use of it in a backward compatible way. */ | |
6133 | p = skip_to_semicolon (p1 + 1); | |
6134 | } | |
26d56a93 | 6135 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6136 | { |
6137 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6138 | ||
6139 | /* Make sure the stub doesn't forget to indicate support | |
6140 | with qSupported. */ | |
6141 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6142 | error (_("Unexpected hwbreak stop reason")); | |
6143 | ||
6144 | /* See above. */ | |
6145 | p = skip_to_semicolon (p1 + 1); | |
6146 | } | |
26d56a93 | 6147 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6148 | { |
1f10ba14 PA |
6149 | event->ws.kind = TARGET_WAITKIND_LOADED; |
6150 | p = skip_to_semicolon (p1 + 1); | |
6151 | } | |
26d56a93 | 6152 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6153 | { |
6154 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6155 | /* p1 will indicate "begin" or "end", but it makes | |
6156 | no difference for now, so ignore it. */ | |
6157 | p = skip_to_semicolon (p1 + 1); | |
6158 | } | |
26d56a93 | 6159 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6160 | { |
6161 | ULONGEST c; | |
a744cf53 | 6162 | |
1f10ba14 PA |
6163 | p = unpack_varlen_hex (++p1, &c); |
6164 | event->core = c; | |
cea39f65 | 6165 | } |
26d56a93 | 6166 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6167 | { |
6168 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6169 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6170 | } | |
26d56a93 | 6171 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6172 | { |
6173 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6174 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6175 | } | |
26d56a93 | 6176 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6177 | { |
6178 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
6179 | p = skip_to_semicolon (p1 + 1); | |
6180 | } | |
94585166 DB |
6181 | else if (strncmp (p, "exec", p1 - p) == 0) |
6182 | { | |
6183 | ULONGEST ignored; | |
6184 | char pathname[PATH_MAX]; | |
6185 | int pathlen; | |
6186 | ||
6187 | /* Determine the length of the execd pathname. */ | |
6188 | p = unpack_varlen_hex (++p1, &ignored); | |
6189 | pathlen = (p - p1) / 2; | |
6190 | ||
6191 | /* Save the pathname for event reporting and for | |
6192 | the next run command. */ | |
6193 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6194 | pathname[pathlen] = '\0'; | |
6195 | ||
6196 | /* This is freed during event handling. */ | |
6197 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6198 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6199 | ||
6200 | /* Skip the registers included in this packet, since | |
6201 | they may be for an architecture different from the | |
6202 | one used by the original program. */ | |
6203 | skipregs = 1; | |
6204 | } | |
cea39f65 MS |
6205 | else |
6206 | { | |
1f10ba14 PA |
6207 | ULONGEST pnum; |
6208 | char *p_temp; | |
6209 | ||
94585166 DB |
6210 | if (skipregs) |
6211 | { | |
6212 | p = skip_to_semicolon (p1 + 1); | |
6213 | p++; | |
6214 | continue; | |
6215 | } | |
6216 | ||
1f10ba14 PA |
6217 | /* Maybe a real ``P'' register number. */ |
6218 | p_temp = unpack_varlen_hex (p, &pnum); | |
6219 | /* If the first invalid character is the colon, we got a | |
6220 | register number. Otherwise, it's an unknown stop | |
6221 | reason. */ | |
6222 | if (p_temp == p1) | |
6223 | { | |
6224 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6225 | cached_reg_t cached_reg; | |
43ff13b4 | 6226 | |
1f10ba14 PA |
6227 | if (reg == NULL) |
6228 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6229 | Packet: '%s'\n"), |
1f10ba14 | 6230 | hex_string (pnum), p, buf); |
c8e38a49 | 6231 | |
1f10ba14 | 6232 | cached_reg.num = reg->regnum; |
4100683b | 6233 | |
1f10ba14 PA |
6234 | p = p1 + 1; |
6235 | fieldsize = hex2bin (p, cached_reg.data, | |
6236 | register_size (target_gdbarch (), | |
6237 | reg->regnum)); | |
6238 | p += 2 * fieldsize; | |
6239 | if (fieldsize < register_size (target_gdbarch (), | |
6240 | reg->regnum)) | |
6241 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6242 | |
1f10ba14 PA |
6243 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | /* Not a number. Silently skip unknown optional | |
6248 | info. */ | |
6249 | p = skip_to_semicolon (p1 + 1); | |
6250 | } | |
cea39f65 | 6251 | } |
c8e38a49 | 6252 | |
cea39f65 MS |
6253 | if (*p != ';') |
6254 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6255 | buf, p); | |
6256 | ++p; | |
6257 | } | |
5b5596ff PA |
6258 | |
6259 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6260 | break; | |
6261 | ||
c8e38a49 PA |
6262 | /* fall through */ |
6263 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6264 | { |
6265 | int sig; | |
6266 | ||
6267 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6268 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6269 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6270 | event->ws.value.sig = (enum gdb_signal) sig; | |
6271 | else | |
6272 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6273 | } | |
c8e38a49 PA |
6274 | break; |
6275 | case 'W': /* Target exited. */ | |
6276 | case 'X': | |
6277 | { | |
6278 | char *p; | |
6279 | int pid; | |
6280 | ULONGEST value; | |
82f73884 | 6281 | |
c8e38a49 PA |
6282 | /* GDB used to accept only 2 hex chars here. Stubs should |
6283 | only send more if they detect GDB supports multi-process | |
6284 | support. */ | |
6285 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6286 | |
c8e38a49 PA |
6287 | if (buf[0] == 'W') |
6288 | { | |
6289 | /* The remote process exited. */ | |
74531fed PA |
6290 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6291 | event->ws.value.integer = value; | |
c8e38a49 PA |
6292 | } |
6293 | else | |
6294 | { | |
6295 | /* The remote process exited with a signal. */ | |
74531fed | 6296 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6297 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6298 | event->ws.value.sig = (enum gdb_signal) value; | |
6299 | else | |
6300 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6301 | } |
82f73884 | 6302 | |
c8e38a49 PA |
6303 | /* If no process is specified, assume inferior_ptid. */ |
6304 | pid = ptid_get_pid (inferior_ptid); | |
6305 | if (*p == '\0') | |
6306 | ; | |
6307 | else if (*p == ';') | |
6308 | { | |
6309 | p++; | |
6310 | ||
0b24eb2d | 6311 | if (*p == '\0') |
82f73884 | 6312 | ; |
61012eef | 6313 | else if (startswith (p, "process:")) |
82f73884 | 6314 | { |
c8e38a49 | 6315 | ULONGEST upid; |
a744cf53 | 6316 | |
c8e38a49 PA |
6317 | p += sizeof ("process:") - 1; |
6318 | unpack_varlen_hex (p, &upid); | |
6319 | pid = upid; | |
82f73884 PA |
6320 | } |
6321 | else | |
6322 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6323 | } |
c8e38a49 PA |
6324 | else |
6325 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6326 | event->ptid = pid_to_ptid (pid); |
6327 | } | |
6328 | break; | |
6329 | } | |
6330 | ||
6331 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6332 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6333 | } | |
6334 | ||
722247f1 YQ |
6335 | /* When the stub wants to tell GDB about a new notification reply, it |
6336 | sends a notification (%Stop, for example). Those can come it at | |
6337 | any time, hence, we have to make sure that any pending | |
6338 | putpkt/getpkt sequence we're making is finished, before querying | |
6339 | the stub for more events with the corresponding ack command | |
6340 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6341 | immediately upon receiving the notification, something like this | |
6342 | could happen: | |
74531fed PA |
6343 | |
6344 | 1.1) --> Hg 1 | |
6345 | 1.2) <-- OK | |
6346 | 1.3) --> g | |
6347 | 1.4) <-- %Stop | |
6348 | 1.5) --> vStopped | |
6349 | 1.6) <-- (registers reply to step #1.3) | |
6350 | ||
6351 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6352 | query. | |
6353 | ||
796cb314 | 6354 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6355 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6356 | doing whatever we were doing: | |
6357 | ||
6358 | 2.1) --> Hg 1 | |
6359 | 2.2) <-- OK | |
6360 | 2.3) --> g | |
6361 | 2.4) <-- %Stop | |
6362 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6363 | 2.5) <-- (registers reply to step #2.3) | |
6364 | ||
6365 | Eventualy after step #2.5, we return to the event loop, which | |
6366 | notices there's an event on the | |
6367 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6368 | associated callback --- the function below. At this point, we're | |
6369 | always safe to start a vStopped sequence. : | |
6370 | ||
6371 | 2.6) --> vStopped | |
6372 | 2.7) <-- T05 thread:2 | |
6373 | 2.8) --> vStopped | |
6374 | 2.9) --> OK | |
6375 | */ | |
6376 | ||
722247f1 YQ |
6377 | void |
6378 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6379 | { |
6380 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6381 | |
f48ff2a7 | 6382 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6383 | { |
722247f1 YQ |
6384 | if (notif_debug) |
6385 | fprintf_unfiltered (gdb_stdlog, | |
6386 | "notif: process: '%s' ack pending event\n", | |
6387 | nc->name); | |
74531fed | 6388 | |
722247f1 | 6389 | /* acknowledge */ |
f48ff2a7 YQ |
6390 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6391 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6392 | |
6393 | while (1) | |
6394 | { | |
6395 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6396 | if (strcmp (rs->buf, "OK") == 0) | |
6397 | break; | |
6398 | else | |
722247f1 | 6399 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6400 | } |
6401 | } | |
722247f1 YQ |
6402 | else |
6403 | { | |
6404 | if (notif_debug) | |
6405 | fprintf_unfiltered (gdb_stdlog, | |
6406 | "notif: process: '%s' no pending reply\n", | |
6407 | nc->name); | |
6408 | } | |
74531fed PA |
6409 | } |
6410 | ||
74531fed PA |
6411 | /* Called when it is decided that STOP_REPLY holds the info of the |
6412 | event that is to be returned to the core. This function always | |
6413 | destroys STOP_REPLY. */ | |
6414 | ||
6415 | static ptid_t | |
6416 | process_stop_reply (struct stop_reply *stop_reply, | |
6417 | struct target_waitstatus *status) | |
6418 | { | |
6419 | ptid_t ptid; | |
6420 | ||
6421 | *status = stop_reply->ws; | |
6422 | ptid = stop_reply->ptid; | |
6423 | ||
6424 | /* If no thread/process was reported by the stub, assume the current | |
6425 | inferior. */ | |
6426 | if (ptid_equal (ptid, null_ptid)) | |
6427 | ptid = inferior_ptid; | |
6428 | ||
5f3563ea PA |
6429 | if (status->kind != TARGET_WAITKIND_EXITED |
6430 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6431 | { |
ee154bee TT |
6432 | struct remote_state *rs = get_remote_state (); |
6433 | ||
5f3563ea PA |
6434 | /* Expedited registers. */ |
6435 | if (stop_reply->regcache) | |
6436 | { | |
217f1f79 | 6437 | struct regcache *regcache |
f5656ead | 6438 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6439 | cached_reg_t *reg; |
6440 | int ix; | |
6441 | ||
6442 | for (ix = 0; | |
6443 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6444 | ix++) | |
217f1f79 | 6445 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6446 | VEC_free (cached_reg_t, stop_reply->regcache); |
6447 | } | |
74531fed | 6448 | |
f7e6eed5 | 6449 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 6450 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
6451 | |
6452 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 6453 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
6454 | } |
6455 | ||
74531fed PA |
6456 | stop_reply_xfree (stop_reply); |
6457 | return ptid; | |
6458 | } | |
6459 | ||
6460 | /* The non-stop mode version of target_wait. */ | |
6461 | ||
6462 | static ptid_t | |
47608cb1 | 6463 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6464 | { |
6465 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6466 | struct stop_reply *stop_reply; |
6467 | int ret; | |
fee9eda9 | 6468 | int is_notif = 0; |
74531fed PA |
6469 | |
6470 | /* If in non-stop mode, get out of getpkt even if a | |
6471 | notification is received. */ | |
6472 | ||
6473 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6474 | 0 /* forever */, &is_notif); |
74531fed PA |
6475 | while (1) |
6476 | { | |
fee9eda9 | 6477 | if (ret != -1 && !is_notif) |
74531fed PA |
6478 | switch (rs->buf[0]) |
6479 | { | |
6480 | case 'E': /* Error of some sort. */ | |
6481 | /* We're out of sync with the target now. Did it continue | |
6482 | or not? We can't tell which thread it was in non-stop, | |
6483 | so just ignore this. */ | |
6484 | warning (_("Remote failure reply: %s"), rs->buf); | |
6485 | break; | |
6486 | case 'O': /* Console output. */ | |
6487 | remote_console_output (rs->buf + 1); | |
6488 | break; | |
6489 | default: | |
6490 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6491 | break; | |
6492 | } | |
6493 | ||
6494 | /* Acknowledge a pending stop reply that may have arrived in the | |
6495 | mean time. */ | |
f48ff2a7 | 6496 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6497 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6498 | |
6499 | /* If indeed we noticed a stop reply, we're done. */ | |
6500 | stop_reply = queued_stop_reply (ptid); | |
6501 | if (stop_reply != NULL) | |
6502 | return process_stop_reply (stop_reply, status); | |
6503 | ||
47608cb1 | 6504 | /* Still no event. If we're just polling for an event, then |
74531fed | 6505 | return to the event loop. */ |
47608cb1 | 6506 | if (options & TARGET_WNOHANG) |
74531fed PA |
6507 | { |
6508 | status->kind = TARGET_WAITKIND_IGNORE; | |
6509 | return minus_one_ptid; | |
6510 | } | |
6511 | ||
47608cb1 | 6512 | /* Otherwise do a blocking wait. */ |
74531fed | 6513 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6514 | 1 /* forever */, &is_notif); |
74531fed PA |
6515 | } |
6516 | } | |
6517 | ||
6518 | /* Wait until the remote machine stops, then return, storing status in | |
6519 | STATUS just as `wait' would. */ | |
6520 | ||
6521 | static ptid_t | |
47608cb1 | 6522 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6523 | { |
6524 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6525 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6526 | char *buf; |
74531fed PA |
6527 | struct stop_reply *stop_reply; |
6528 | ||
47608cb1 PA |
6529 | again: |
6530 | ||
74531fed PA |
6531 | status->kind = TARGET_WAITKIND_IGNORE; |
6532 | status->value.integer = 0; | |
6533 | ||
6534 | stop_reply = queued_stop_reply (ptid); | |
6535 | if (stop_reply != NULL) | |
6536 | return process_stop_reply (stop_reply, status); | |
6537 | ||
6538 | if (rs->cached_wait_status) | |
6539 | /* Use the cached wait status, but only once. */ | |
6540 | rs->cached_wait_status = 0; | |
6541 | else | |
6542 | { | |
6543 | int ret; | |
722247f1 | 6544 | int is_notif; |
567420d1 PA |
6545 | int forever = ((options & TARGET_WNOHANG) == 0 |
6546 | && wait_forever_enabled_p); | |
6547 | ||
6548 | if (!rs->waiting_for_stop_reply) | |
6549 | { | |
6550 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6551 | return minus_one_ptid; | |
6552 | } | |
74531fed PA |
6553 | |
6554 | if (!target_is_async_p ()) | |
6555 | { | |
934b9bac | 6556 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6557 | /* If the user hit C-c before this packet, or between packets, |
6558 | pretend that it was hit right here. */ | |
522002f9 | 6559 | if (check_quit_flag ()) |
74531fed | 6560 | { |
522002f9 | 6561 | clear_quit_flag (); |
934b9bac | 6562 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6563 | } |
6564 | } | |
6565 | ||
6566 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6567 | _never_ wait for ever -> test on target_is_async_p(). | |
6568 | However, before we do that we need to ensure that the caller | |
6569 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6570 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6571 | forever, &is_notif); |
722247f1 | 6572 | |
5e1b953b SDJ |
6573 | if (!target_is_async_p ()) |
6574 | signal (SIGINT, ofunc); | |
6575 | ||
722247f1 YQ |
6576 | /* GDB gets a notification. Return to core as this event is |
6577 | not interesting. */ | |
6578 | if (ret != -1 && is_notif) | |
6579 | return minus_one_ptid; | |
567420d1 PA |
6580 | |
6581 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6582 | return minus_one_ptid; | |
74531fed PA |
6583 | } |
6584 | ||
6585 | buf = rs->buf; | |
6586 | ||
f7e6eed5 | 6587 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6588 | |
6589 | /* We got something. */ | |
6590 | rs->waiting_for_stop_reply = 0; | |
6591 | ||
3a29589a DJ |
6592 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6593 | an 'F' or 'O' packet. */ | |
6594 | if (buf[0] != 'F' && buf[0] != 'O') | |
6595 | rs->ctrlc_pending_p = 0; | |
6596 | ||
74531fed PA |
6597 | switch (buf[0]) |
6598 | { | |
6599 | case 'E': /* Error of some sort. */ | |
6600 | /* We're out of sync with the target now. Did it continue or | |
6601 | not? Not is more likely, so report a stop. */ | |
6602 | warning (_("Remote failure reply: %s"), buf); | |
6603 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6604 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6605 | break; |
6606 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6607 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6608 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6609 | break; |
6610 | case 'T': case 'S': case 'X': case 'W': | |
6611 | { | |
722247f1 YQ |
6612 | struct stop_reply *stop_reply |
6613 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6614 | rs->buf); | |
74531fed | 6615 | |
74531fed | 6616 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6617 | break; |
6618 | } | |
6619 | case 'O': /* Console output. */ | |
6620 | remote_console_output (buf + 1); | |
e24a49d8 | 6621 | |
c8e38a49 PA |
6622 | /* The target didn't really stop; keep waiting. */ |
6623 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6624 | |
c8e38a49 PA |
6625 | break; |
6626 | case '\0': | |
b73be471 | 6627 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6628 | { |
6629 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6630 | remote system doesn't support it. */ | |
6631 | target_terminal_ours_for_output (); | |
6632 | printf_filtered | |
6633 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6634 | gdb_signal_to_name (rs->last_sent_signal)); |
6635 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6636 | target_terminal_inferior (); |
6637 | ||
280ceea3 | 6638 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6639 | putpkt ((char *) buf); |
6640 | ||
6641 | /* We just told the target to resume, so a stop reply is in | |
6642 | order. */ | |
e24a49d8 | 6643 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6644 | break; |
43ff13b4 | 6645 | } |
c8e38a49 PA |
6646 | /* else fallthrough */ |
6647 | default: | |
6648 | warning (_("Invalid remote reply: %s"), buf); | |
6649 | /* Keep waiting. */ | |
6650 | rs->waiting_for_stop_reply = 1; | |
6651 | break; | |
43ff13b4 | 6652 | } |
c8e38a49 | 6653 | |
c8e38a49 | 6654 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6655 | { |
6656 | /* Nothing interesting happened. If we're doing a non-blocking | |
6657 | poll, we're done. Otherwise, go back to waiting. */ | |
6658 | if (options & TARGET_WNOHANG) | |
6659 | return minus_one_ptid; | |
6660 | else | |
6661 | goto again; | |
6662 | } | |
74531fed PA |
6663 | else if (status->kind != TARGET_WAITKIND_EXITED |
6664 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6665 | { |
6666 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6667 | record_currthread (rs, event_ptid); |
82f73884 PA |
6668 | else |
6669 | event_ptid = inferior_ptid; | |
43ff13b4 | 6670 | } |
74531fed PA |
6671 | else |
6672 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6673 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6674 | |
82f73884 | 6675 | return event_ptid; |
43ff13b4 JM |
6676 | } |
6677 | ||
74531fed PA |
6678 | /* Wait until the remote machine stops, then return, storing status in |
6679 | STATUS just as `wait' would. */ | |
6680 | ||
c8e38a49 | 6681 | static ptid_t |
117de6a9 | 6682 | remote_wait (struct target_ops *ops, |
47608cb1 | 6683 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6684 | { |
6685 | ptid_t event_ptid; | |
6686 | ||
74531fed | 6687 | if (non_stop) |
47608cb1 | 6688 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6689 | else |
47608cb1 | 6690 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6691 | |
d9d41e78 | 6692 | if (target_is_async_p ()) |
c8e38a49 | 6693 | { |
74531fed PA |
6694 | /* If there are are events left in the queue tell the event loop |
6695 | to return here. */ | |
722247f1 | 6696 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6697 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6698 | } |
c8e38a49 PA |
6699 | |
6700 | return event_ptid; | |
6701 | } | |
6702 | ||
74ca34ce | 6703 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6704 | |
b96ec7ac | 6705 | static int |
56be3814 | 6706 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6707 | { |
6708 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6709 | char *buf, *p; |
b96ec7ac AC |
6710 | char regp[MAX_REGISTER_SIZE]; |
6711 | int i; | |
6712 | ||
4082afcc | 6713 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6714 | return 0; |
6715 | ||
6716 | if (reg->pnum == -1) | |
6717 | return 0; | |
6718 | ||
2e9f7625 | 6719 | p = rs->buf; |
fcad0fa4 | 6720 | *p++ = 'p'; |
74ca34ce | 6721 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6722 | *p++ = '\0'; |
1f4437a4 MS |
6723 | putpkt (rs->buf); |
6724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6725 | |
2e9f7625 DJ |
6726 | buf = rs->buf; |
6727 | ||
74ca34ce DJ |
6728 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6729 | { | |
6730 | case PACKET_OK: | |
6731 | break; | |
6732 | case PACKET_UNKNOWN: | |
6733 | return 0; | |
6734 | case PACKET_ERROR: | |
27a9c0bf MS |
6735 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6736 | gdbarch_register_name (get_regcache_arch (regcache), | |
6737 | reg->regnum), | |
6738 | buf); | |
74ca34ce | 6739 | } |
3f9a994c JB |
6740 | |
6741 | /* If this register is unfetchable, tell the regcache. */ | |
6742 | if (buf[0] == 'x') | |
8480adf2 | 6743 | { |
56be3814 | 6744 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6745 | return 1; |
b96ec7ac | 6746 | } |
b96ec7ac | 6747 | |
3f9a994c JB |
6748 | /* Otherwise, parse and supply the value. */ |
6749 | p = buf; | |
6750 | i = 0; | |
6751 | while (p[0] != 0) | |
6752 | { | |
6753 | if (p[1] == 0) | |
74ca34ce | 6754 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6755 | |
6756 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6757 | p += 2; | |
6758 | } | |
56be3814 | 6759 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6760 | return 1; |
b96ec7ac AC |
6761 | } |
6762 | ||
74ca34ce DJ |
6763 | /* Fetch the registers included in the target's 'g' packet. */ |
6764 | ||
29709017 DJ |
6765 | static int |
6766 | send_g_packet (void) | |
c906108c | 6767 | { |
d01949b6 | 6768 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6769 | int buf_len; |
c906108c | 6770 | |
bba74b36 | 6771 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6772 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6773 | |
29709017 DJ |
6774 | /* We can get out of synch in various cases. If the first character |
6775 | in the buffer is not a hex character, assume that has happened | |
6776 | and try to fetch another packet to read. */ | |
6777 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6778 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6779 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6780 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6781 | { | |
6782 | if (remote_debug) | |
6783 | fprintf_unfiltered (gdb_stdlog, | |
6784 | "Bad register packet; fetching a new packet\n"); | |
6785 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6786 | } | |
6787 | ||
74ca34ce DJ |
6788 | buf_len = strlen (rs->buf); |
6789 | ||
6790 | /* Sanity check the received packet. */ | |
6791 | if (buf_len % 2 != 0) | |
6792 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6793 | |
6794 | return buf_len / 2; | |
6795 | } | |
6796 | ||
6797 | static void | |
56be3814 | 6798 | process_g_packet (struct regcache *regcache) |
29709017 | 6799 | { |
4a22f64d | 6800 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6801 | struct remote_state *rs = get_remote_state (); |
6802 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6803 | int i, buf_len; | |
6804 | char *p; | |
6805 | char *regs; | |
6806 | ||
6807 | buf_len = strlen (rs->buf); | |
6808 | ||
6809 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6810 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6811 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6812 | ||
6813 | /* Save the size of the packet sent to us by the target. It is used | |
6814 | as a heuristic when determining the max size of packets that the | |
6815 | target can safely receive. */ | |
6816 | if (rsa->actual_register_packet_size == 0) | |
6817 | rsa->actual_register_packet_size = buf_len; | |
6818 | ||
6819 | /* If this is smaller than we guessed the 'g' packet would be, | |
6820 | update our records. A 'g' reply that doesn't include a register's | |
6821 | value implies either that the register is not available, or that | |
6822 | the 'p' packet must be used. */ | |
6823 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6824 | { |
74ca34ce DJ |
6825 | rsa->sizeof_g_packet = buf_len / 2; |
6826 | ||
4a22f64d | 6827 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6828 | { |
74ca34ce DJ |
6829 | if (rsa->regs[i].pnum == -1) |
6830 | continue; | |
6831 | ||
6832 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6833 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6834 | else |
74ca34ce | 6835 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6836 | } |
74ca34ce | 6837 | } |
b323314b | 6838 | |
74ca34ce | 6839 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6840 | |
6841 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6842 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6843 | |
c906108c SS |
6844 | /* Reply describes registers byte by byte, each byte encoded as two |
6845 | hex characters. Suck them all up, then supply them to the | |
6846 | register cacheing/storage mechanism. */ | |
6847 | ||
74ca34ce | 6848 | p = rs->buf; |
ea9c271d | 6849 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6850 | { |
74ca34ce DJ |
6851 | if (p[0] == 0 || p[1] == 0) |
6852 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6853 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6854 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6855 | |
c906108c | 6856 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6857 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6858 | else |
6859 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6860 | p += 2; | |
6861 | } | |
6862 | ||
a744cf53 MS |
6863 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6864 | { | |
6865 | struct packet_reg *r = &rsa->regs[i]; | |
6866 | ||
6867 | if (r->in_g_packet) | |
6868 | { | |
6869 | if (r->offset * 2 >= strlen (rs->buf)) | |
6870 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6871 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6872 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6873 | else if (rs->buf[r->offset * 2] == 'x') |
6874 | { | |
6875 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6876 | /* The register isn't available, mark it as such (at | |
6877 | the same time setting the value to zero). */ | |
6878 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6879 | } | |
6880 | else | |
6881 | regcache_raw_supply (regcache, r->regnum, | |
6882 | regs + r->offset); | |
6883 | } | |
6884 | } | |
c906108c SS |
6885 | } |
6886 | ||
29709017 | 6887 | static void |
56be3814 | 6888 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6889 | { |
6890 | send_g_packet (); | |
56be3814 | 6891 | process_g_packet (regcache); |
29709017 DJ |
6892 | } |
6893 | ||
e6e4e701 PA |
6894 | /* Make the remote selected traceframe match GDB's selected |
6895 | traceframe. */ | |
6896 | ||
6897 | static void | |
6898 | set_remote_traceframe (void) | |
6899 | { | |
6900 | int newnum; | |
262e1174 | 6901 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6902 | |
262e1174 | 6903 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6904 | return; |
6905 | ||
6906 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6907 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6908 | |
6909 | newnum = target_trace_find (tfind_number, | |
6910 | get_traceframe_number (), 0, 0, NULL); | |
6911 | ||
6912 | /* Should not happen. If it does, all bets are off. */ | |
6913 | if (newnum != get_traceframe_number ()) | |
6914 | warning (_("could not set remote traceframe")); | |
6915 | } | |
6916 | ||
74ca34ce | 6917 | static void |
28439f5e PA |
6918 | remote_fetch_registers (struct target_ops *ops, |
6919 | struct regcache *regcache, int regnum) | |
74ca34ce | 6920 | { |
74ca34ce DJ |
6921 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6922 | int i; | |
6923 | ||
e6e4e701 | 6924 | set_remote_traceframe (); |
79d7f229 | 6925 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6926 | |
6927 | if (regnum >= 0) | |
6928 | { | |
6929 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6930 | |
74ca34ce DJ |
6931 | gdb_assert (reg != NULL); |
6932 | ||
6933 | /* If this register might be in the 'g' packet, try that first - | |
6934 | we are likely to read more than one register. If this is the | |
6935 | first 'g' packet, we might be overly optimistic about its | |
6936 | contents, so fall back to 'p'. */ | |
6937 | if (reg->in_g_packet) | |
6938 | { | |
56be3814 | 6939 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6940 | if (reg->in_g_packet) |
6941 | return; | |
6942 | } | |
6943 | ||
56be3814 | 6944 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6945 | return; |
6946 | ||
6947 | /* This register is not available. */ | |
56be3814 | 6948 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6949 | |
6950 | return; | |
6951 | } | |
6952 | ||
56be3814 | 6953 | fetch_registers_using_g (regcache); |
74ca34ce | 6954 | |
4a22f64d | 6955 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6956 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6957 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6958 | { |
6959 | /* This register is not available. */ | |
56be3814 | 6960 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6961 | } |
6962 | } | |
6963 | ||
c906108c SS |
6964 | /* Prepare to store registers. Since we may send them all (using a |
6965 | 'G' request), we have to read out the ones we don't want to change | |
6966 | first. */ | |
6967 | ||
c5aa993b | 6968 | static void |
f32dbf8c | 6969 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6970 | { |
ea9c271d | 6971 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6972 | int i; |
cfd77fa1 | 6973 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6974 | |
c906108c | 6975 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6976 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6977 | { |
6978 | case PACKET_DISABLE: | |
6979 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6980 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6981 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6982 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6983 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6984 | break; |
6985 | case PACKET_ENABLE: | |
6986 | break; | |
6987 | } | |
6988 | } | |
6989 | ||
ad10f812 | 6990 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6991 | packet was not recognized. */ |
5a2468f5 JM |
6992 | |
6993 | static int | |
1f4437a4 MS |
6994 | store_register_using_P (const struct regcache *regcache, |
6995 | struct packet_reg *reg) | |
5a2468f5 | 6996 | { |
4a22f64d | 6997 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6998 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6999 | /* Try storing a single register. */ |
6d820c5c | 7000 | char *buf = rs->buf; |
cfd77fa1 | 7001 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7002 | char *p; |
5a2468f5 | 7003 | |
4082afcc | 7004 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7005 | return 0; |
7006 | ||
7007 | if (reg->pnum == -1) | |
7008 | return 0; | |
7009 | ||
ea9c271d | 7010 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7011 | p = buf + strlen (buf); |
56be3814 | 7012 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7013 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7014 | putpkt (rs->buf); |
7015 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7016 | |
74ca34ce DJ |
7017 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7018 | { | |
7019 | case PACKET_OK: | |
7020 | return 1; | |
7021 | case PACKET_ERROR: | |
27a9c0bf MS |
7022 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7023 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7024 | case PACKET_UNKNOWN: |
7025 | return 0; | |
7026 | default: | |
7027 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7028 | } | |
c906108c SS |
7029 | } |
7030 | ||
23860348 MS |
7031 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7032 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7033 | |
7034 | static void | |
56be3814 | 7035 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7036 | { |
d01949b6 | 7037 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7038 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7039 | gdb_byte *regs; |
c906108c SS |
7040 | char *p; |
7041 | ||
193cb69f AC |
7042 | /* Extract all the registers in the regcache copying them into a |
7043 | local buffer. */ | |
7044 | { | |
b323314b | 7045 | int i; |
a744cf53 | 7046 | |
ea9c271d DJ |
7047 | regs = alloca (rsa->sizeof_g_packet); |
7048 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 7049 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7050 | { |
ea9c271d | 7051 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7052 | |
b323314b | 7053 | if (r->in_g_packet) |
56be3814 | 7054 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7055 | } |
7056 | } | |
c906108c SS |
7057 | |
7058 | /* Command describes registers byte by byte, | |
7059 | each byte encoded as two hex characters. */ | |
6d820c5c | 7060 | p = rs->buf; |
193cb69f | 7061 | *p++ = 'G'; |
74ca34ce DJ |
7062 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7063 | updated. */ | |
7064 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7065 | putpkt (rs->buf); |
7066 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7067 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7068 | error (_("Could not write registers; remote failure reply '%s'"), |
7069 | rs->buf); | |
c906108c | 7070 | } |
74ca34ce DJ |
7071 | |
7072 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7073 | of the register cache buffer. FIXME: ignores errors. */ | |
7074 | ||
7075 | static void | |
28439f5e PA |
7076 | remote_store_registers (struct target_ops *ops, |
7077 | struct regcache *regcache, int regnum) | |
74ca34ce | 7078 | { |
74ca34ce DJ |
7079 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7080 | int i; | |
7081 | ||
e6e4e701 | 7082 | set_remote_traceframe (); |
79d7f229 | 7083 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7084 | |
7085 | if (regnum >= 0) | |
7086 | { | |
7087 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7088 | |
74ca34ce DJ |
7089 | gdb_assert (reg != NULL); |
7090 | ||
7091 | /* Always prefer to store registers using the 'P' packet if | |
7092 | possible; we often change only a small number of registers. | |
7093 | Sometimes we change a larger number; we'd need help from a | |
7094 | higher layer to know to use 'G'. */ | |
56be3814 | 7095 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7096 | return; |
7097 | ||
7098 | /* For now, don't complain if we have no way to write the | |
7099 | register. GDB loses track of unavailable registers too | |
7100 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7101 | any way to read the register, either... */ |
74ca34ce DJ |
7102 | if (!reg->in_g_packet) |
7103 | return; | |
7104 | ||
56be3814 | 7105 | store_registers_using_G (regcache); |
74ca34ce DJ |
7106 | return; |
7107 | } | |
7108 | ||
56be3814 | 7109 | store_registers_using_G (regcache); |
74ca34ce | 7110 | |
4a22f64d | 7111 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7112 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7113 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7114 | /* See above for why we do not issue an error here. */ |
7115 | continue; | |
7116 | } | |
c906108c SS |
7117 | \f |
7118 | ||
7119 | /* Return the number of hex digits in num. */ | |
7120 | ||
7121 | static int | |
fba45db2 | 7122 | hexnumlen (ULONGEST num) |
c906108c SS |
7123 | { |
7124 | int i; | |
7125 | ||
7126 | for (i = 0; num != 0; i++) | |
7127 | num >>= 4; | |
7128 | ||
7129 | return max (i, 1); | |
7130 | } | |
7131 | ||
2df3850c | 7132 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7133 | |
7134 | static int | |
fba45db2 | 7135 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7136 | { |
c906108c | 7137 | int len = hexnumlen (num); |
a744cf53 | 7138 | |
2df3850c JM |
7139 | return hexnumnstr (buf, num, len); |
7140 | } | |
7141 | ||
c906108c | 7142 | |
2df3850c | 7143 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7144 | |
2df3850c | 7145 | static int |
fba45db2 | 7146 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7147 | { |
7148 | int i; | |
7149 | ||
7150 | buf[width] = '\0'; | |
7151 | ||
7152 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7153 | { |
c5aa993b | 7154 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7155 | num >>= 4; |
7156 | } | |
7157 | ||
2df3850c | 7158 | return width; |
c906108c SS |
7159 | } |
7160 | ||
23860348 | 7161 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7162 | |
7163 | static CORE_ADDR | |
fba45db2 | 7164 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7165 | { |
883b9c6c | 7166 | unsigned int address_size = remote_address_size; |
a744cf53 | 7167 | |
911c95a5 UW |
7168 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7169 | if (!address_size) | |
f5656ead | 7170 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7171 | |
7172 | if (address_size > 0 | |
7173 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7174 | { |
7175 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7176 | in a ULONGEST variable. */ |
c906108c | 7177 | ULONGEST mask = 1; |
a744cf53 | 7178 | |
911c95a5 | 7179 | mask = (mask << address_size) - 1; |
c906108c SS |
7180 | addr &= mask; |
7181 | } | |
7182 | return addr; | |
7183 | } | |
7184 | ||
7185 | /* Determine whether the remote target supports binary downloading. | |
7186 | This is accomplished by sending a no-op memory write of zero length | |
7187 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7188 | the whole packet, since many stubs strip the eighth bit and |
7189 | subsequently compute a wrong checksum, which causes real havoc with | |
7190 | remote_write_bytes. | |
7a292a7a | 7191 | |
96baa820 | 7192 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7193 | clean. In cases like this, the user should clear "remote |
23860348 | 7194 | X-packet". */ |
96baa820 | 7195 | |
c906108c | 7196 | static void |
fba45db2 | 7197 | check_binary_download (CORE_ADDR addr) |
c906108c | 7198 | { |
d01949b6 | 7199 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7200 | |
4082afcc | 7201 | switch (packet_support (PACKET_X)) |
c906108c | 7202 | { |
96baa820 JM |
7203 | case PACKET_DISABLE: |
7204 | break; | |
7205 | case PACKET_ENABLE: | |
7206 | break; | |
7207 | case PACKET_SUPPORT_UNKNOWN: | |
7208 | { | |
96baa820 | 7209 | char *p; |
802188a7 | 7210 | |
2e9f7625 | 7211 | p = rs->buf; |
96baa820 JM |
7212 | *p++ = 'X'; |
7213 | p += hexnumstr (p, (ULONGEST) addr); | |
7214 | *p++ = ','; | |
7215 | p += hexnumstr (p, (ULONGEST) 0); | |
7216 | *p++ = ':'; | |
7217 | *p = '\0'; | |
802188a7 | 7218 | |
2e9f7625 | 7219 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7220 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7221 | |
2e9f7625 | 7222 | if (rs->buf[0] == '\0') |
96baa820 JM |
7223 | { |
7224 | if (remote_debug) | |
7225 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7226 | "binary downloading NOT " |
7227 | "supported by target\n"); | |
444abaca | 7228 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7229 | } |
7230 | else | |
7231 | { | |
7232 | if (remote_debug) | |
7233 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7234 | "binary downloading supported by target\n"); |
444abaca | 7235 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7236 | } |
7237 | break; | |
7238 | } | |
c906108c SS |
7239 | } |
7240 | } | |
7241 | ||
124e13d9 SM |
7242 | /* Helper function to resize the payload in order to try to get a good |
7243 | alignment. We try to write an amount of data such that the next write will | |
7244 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7245 | ||
7246 | static int | |
7247 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7248 | { | |
7249 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7250 | } | |
7251 | ||
c906108c SS |
7252 | /* Write memory data directly to the remote machine. |
7253 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7254 | HEADER is the starting part of the packet. |
c906108c SS |
7255 | MEMADDR is the address in the remote memory space. |
7256 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7257 | LEN_UNITS is the number of addressable units to write. |
7258 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7259 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7260 | should send data as binary ('X'), or hex-encoded ('M'). | |
7261 | ||
7262 | The function creates packet of the form | |
7263 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7264 | ||
124e13d9 | 7265 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7266 | |
7267 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7268 | are omitted. | |
7269 | ||
9b409511 | 7270 | Return the transferred status, error or OK (an |
124e13d9 SM |
7271 | 'enum target_xfer_status' value). Save the number of addressable units |
7272 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7273 | ||
7274 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7275 | exchange between gdb and the stub could look like (?? in place of the | |
7276 | checksum): | |
7277 | ||
7278 | -> $m1000,4#?? | |
7279 | <- aaaabbbbccccdddd | |
7280 | ||
7281 | -> $M1000,3:eeeeffffeeee#?? | |
7282 | <- OK | |
7283 | ||
7284 | -> $m1000,4#?? | |
7285 | <- eeeeffffeeeedddd */ | |
c906108c | 7286 | |
9b409511 | 7287 | static enum target_xfer_status |
a76d924d | 7288 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7289 | const gdb_byte *myaddr, ULONGEST len_units, |
7290 | int unit_size, ULONGEST *xfered_len_units, | |
7291 | char packet_format, int use_length) | |
c906108c | 7292 | { |
6d820c5c | 7293 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7294 | char *p; |
a76d924d DJ |
7295 | char *plen = NULL; |
7296 | int plenlen = 0; | |
124e13d9 SM |
7297 | int todo_units; |
7298 | int units_written; | |
7299 | int payload_capacity_bytes; | |
7300 | int payload_length_bytes; | |
a76d924d DJ |
7301 | |
7302 | if (packet_format != 'X' && packet_format != 'M') | |
7303 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7304 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7305 | |
124e13d9 | 7306 | if (len_units == 0) |
9b409511 | 7307 | return TARGET_XFER_EOF; |
b2182ed2 | 7308 | |
124e13d9 | 7309 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7310 | |
6d820c5c DJ |
7311 | /* The packet buffer will be large enough for the payload; |
7312 | get_memory_packet_size ensures this. */ | |
a76d924d | 7313 | rs->buf[0] = '\0'; |
c906108c | 7314 | |
a257b5bb | 7315 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7316 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7317 | ||
124e13d9 | 7318 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7319 | if (!use_length) |
0df8b418 | 7320 | /* The comma won't be used. */ |
124e13d9 SM |
7321 | payload_capacity_bytes += 1; |
7322 | payload_capacity_bytes -= strlen (header); | |
7323 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7324 | |
a76d924d | 7325 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7326 | |
a76d924d DJ |
7327 | strcat (rs->buf, header); |
7328 | p = rs->buf + strlen (header); | |
7329 | ||
7330 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7331 | if (packet_format == 'X') | |
c906108c | 7332 | { |
23860348 | 7333 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7334 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7335 | if (use_length) |
124e13d9 SM |
7336 | payload_capacity_bytes -= hexnumlen (todo_units); |
7337 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7338 | } |
7339 | else | |
7340 | { | |
124e13d9 SM |
7341 | /* Number of bytes that will fit. */ |
7342 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7343 | if (use_length) |
124e13d9 SM |
7344 | payload_capacity_bytes -= hexnumlen (todo_units); |
7345 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7346 | } |
a76d924d | 7347 | |
124e13d9 | 7348 | if (todo_units <= 0) |
3de11b2e | 7349 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7350 | _("minimum packet size too small to write data")); |
802188a7 | 7351 | |
6765f3e5 DJ |
7352 | /* If we already need another packet, then try to align the end |
7353 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7354 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7355 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7356 | |
a257b5bb | 7357 | /* Append "<memaddr>". */ |
917317f4 JM |
7358 | memaddr = remote_address_masked (memaddr); |
7359 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7360 | |
a76d924d DJ |
7361 | if (use_length) |
7362 | { | |
7363 | /* Append ",". */ | |
7364 | *p++ = ','; | |
802188a7 | 7365 | |
124e13d9 SM |
7366 | /* Append the length and retain its location and size. It may need to be |
7367 | adjusted once the packet body has been created. */ | |
a76d924d | 7368 | plen = p; |
124e13d9 | 7369 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7370 | p += plenlen; |
7371 | } | |
a257b5bb AC |
7372 | |
7373 | /* Append ":". */ | |
917317f4 JM |
7374 | *p++ = ':'; |
7375 | *p = '\0'; | |
802188a7 | 7376 | |
a257b5bb | 7377 | /* Append the packet body. */ |
a76d924d | 7378 | if (packet_format == 'X') |
917317f4 | 7379 | { |
917317f4 JM |
7380 | /* Binary mode. Send target system values byte by byte, in |
7381 | increasing byte addresses. Only escape certain critical | |
7382 | characters. */ | |
124e13d9 SM |
7383 | payload_length_bytes = |
7384 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7385 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7386 | |
124e13d9 | 7387 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7388 | a second try to keep the end of the packet aligned. Don't do |
7389 | this if the packet is tiny. */ | |
124e13d9 | 7390 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7391 | { |
124e13d9 SM |
7392 | int new_todo_units; |
7393 | ||
7394 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7395 | ||
7396 | if (new_todo_units != units_written) | |
7397 | payload_length_bytes = | |
7398 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7399 | (gdb_byte *) p, &units_written, | |
7400 | payload_capacity_bytes); | |
6765f3e5 DJ |
7401 | } |
7402 | ||
124e13d9 SM |
7403 | p += payload_length_bytes; |
7404 | if (use_length && units_written < todo_units) | |
c906108c | 7405 | { |
802188a7 | 7406 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7407 | and we have actually sent fewer units than planned. |
917317f4 JM |
7408 | Fix-up the length field of the packet. Use the same |
7409 | number of characters as before. */ | |
124e13d9 SM |
7410 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7411 | plenlen); | |
917317f4 | 7412 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7413 | } |
a76d924d DJ |
7414 | } |
7415 | else | |
7416 | { | |
917317f4 JM |
7417 | /* Normal mode: Send target system values byte by byte, in |
7418 | increasing byte addresses. Each byte is encoded as a two hex | |
7419 | value. */ | |
124e13d9 SM |
7420 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7421 | units_written = todo_units; | |
c906108c | 7422 | } |
802188a7 | 7423 | |
2e9f7625 | 7424 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7425 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7426 | |
2e9f7625 | 7427 | if (rs->buf[0] == 'E') |
00d84524 | 7428 | return TARGET_XFER_E_IO; |
802188a7 | 7429 | |
124e13d9 SM |
7430 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7431 | send fewer units than we'd planned. */ | |
7432 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7433 | return TARGET_XFER_OK; |
c906108c SS |
7434 | } |
7435 | ||
a76d924d DJ |
7436 | /* Write memory data directly to the remote machine. |
7437 | This does not inform the data cache; the data cache uses this. | |
7438 | MEMADDR is the address in the remote memory space. | |
7439 | MYADDR is the address of the buffer in our space. | |
7440 | LEN is the number of bytes. | |
7441 | ||
9b409511 YQ |
7442 | Return the transferred status, error or OK (an |
7443 | 'enum target_xfer_status' value). Save the number of bytes | |
7444 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7445 | |
9b409511 YQ |
7446 | static enum target_xfer_status |
7447 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7448 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7449 | { |
7450 | char *packet_format = 0; | |
7451 | ||
7452 | /* Check whether the target supports binary download. */ | |
7453 | check_binary_download (memaddr); | |
7454 | ||
4082afcc | 7455 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7456 | { |
7457 | case PACKET_ENABLE: | |
7458 | packet_format = "X"; | |
7459 | break; | |
7460 | case PACKET_DISABLE: | |
7461 | packet_format = "M"; | |
7462 | break; | |
7463 | case PACKET_SUPPORT_UNKNOWN: | |
7464 | internal_error (__FILE__, __LINE__, | |
7465 | _("remote_write_bytes: bad internal state")); | |
7466 | default: | |
7467 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7468 | } | |
7469 | ||
7470 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7471 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7472 | packet_format[0], 1); |
a76d924d DJ |
7473 | } |
7474 | ||
9217e74e YQ |
7475 | /* Read memory data directly from the remote machine. |
7476 | This does not use the data cache; the data cache uses this. | |
7477 | MEMADDR is the address in the remote memory space. | |
7478 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7479 | LEN_UNITS is the number of addressable memory units to read.. |
7480 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7481 | |
7482 | Return the transferred status, error or OK (an | |
7483 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7484 | transferred in *XFERED_LEN_UNITS. |
7485 | ||
7486 | See the comment of remote_write_bytes_aux for an example of | |
7487 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7488 | |
7489 | static enum target_xfer_status | |
124e13d9 SM |
7490 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7491 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7492 | { |
7493 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7494 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7495 | char *p; |
124e13d9 SM |
7496 | int todo_units; |
7497 | int decoded_bytes; | |
9217e74e | 7498 | |
124e13d9 | 7499 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7500 | /* The packet buffer will be large enough for the payload; |
7501 | get_memory_packet_size ensures this. */ | |
7502 | ||
124e13d9 SM |
7503 | /* Number of units that will fit. */ |
7504 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7505 | |
7506 | /* Construct "m"<memaddr>","<len>". */ | |
7507 | memaddr = remote_address_masked (memaddr); | |
7508 | p = rs->buf; | |
7509 | *p++ = 'm'; | |
7510 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7511 | *p++ = ','; | |
124e13d9 | 7512 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7513 | *p = '\0'; |
7514 | putpkt (rs->buf); | |
7515 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7516 | if (rs->buf[0] == 'E' | |
7517 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7518 | && rs->buf[3] == '\0') | |
7519 | return TARGET_XFER_E_IO; | |
7520 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7521 | characters. */ | |
7522 | p = rs->buf; | |
124e13d9 | 7523 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7524 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7525 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7526 | return TARGET_XFER_OK; |
7527 | } | |
7528 | ||
b55fbac4 YQ |
7529 | /* Using the set of read-only target sections of remote, read live |
7530 | read-only memory. | |
8acf9577 YQ |
7531 | |
7532 | For interface/parameters/return description see target.h, | |
7533 | to_xfer_partial. */ | |
7534 | ||
7535 | static enum target_xfer_status | |
b55fbac4 YQ |
7536 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7537 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7538 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7539 | { |
7540 | struct target_section *secp; | |
7541 | struct target_section_table *table; | |
7542 | ||
7543 | secp = target_section_by_addr (ops, memaddr); | |
7544 | if (secp != NULL | |
7545 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7546 | secp->the_bfd_section) | |
7547 | & SEC_READONLY)) | |
7548 | { | |
7549 | struct target_section *p; | |
7550 | ULONGEST memend = memaddr + len; | |
7551 | ||
7552 | table = target_get_section_table (ops); | |
7553 | ||
7554 | for (p = table->sections; p < table->sections_end; p++) | |
7555 | { | |
7556 | if (memaddr >= p->addr) | |
7557 | { | |
7558 | if (memend <= p->endaddr) | |
7559 | { | |
7560 | /* Entire transfer is within this section. */ | |
124e13d9 | 7561 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7562 | xfered_len); |
8acf9577 YQ |
7563 | } |
7564 | else if (memaddr >= p->endaddr) | |
7565 | { | |
7566 | /* This section ends before the transfer starts. */ | |
7567 | continue; | |
7568 | } | |
7569 | else | |
7570 | { | |
7571 | /* This section overlaps the transfer. Just do half. */ | |
7572 | len = p->endaddr - memaddr; | |
124e13d9 | 7573 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7574 | xfered_len); |
8acf9577 YQ |
7575 | } |
7576 | } | |
7577 | } | |
7578 | } | |
7579 | ||
7580 | return TARGET_XFER_EOF; | |
7581 | } | |
7582 | ||
9217e74e YQ |
7583 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7584 | first if the requested memory is unavailable in traceframe. | |
7585 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7586 | |
9b409511 | 7587 | static enum target_xfer_status |
8acf9577 | 7588 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7589 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7590 | ULONGEST *xfered_len) | |
c906108c | 7591 | { |
6b6aa828 | 7592 | if (len == 0) |
96c4f946 | 7593 | return TARGET_XFER_EOF; |
b2182ed2 | 7594 | |
8acf9577 YQ |
7595 | if (get_traceframe_number () != -1) |
7596 | { | |
7597 | VEC(mem_range_s) *available; | |
7598 | ||
7599 | /* If we fail to get the set of available memory, then the | |
7600 | target does not support querying traceframe info, and so we | |
7601 | attempt reading from the traceframe anyway (assuming the | |
7602 | target implements the old QTro packet then). */ | |
7603 | if (traceframe_available_memory (&available, memaddr, len)) | |
7604 | { | |
7605 | struct cleanup *old_chain; | |
7606 | ||
7607 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7608 | ||
7609 | if (VEC_empty (mem_range_s, available) | |
7610 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7611 | { | |
7612 | enum target_xfer_status res; | |
7613 | ||
7614 | /* Don't read into the traceframe's available | |
7615 | memory. */ | |
7616 | if (!VEC_empty (mem_range_s, available)) | |
7617 | { | |
7618 | LONGEST oldlen = len; | |
7619 | ||
7620 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7621 | gdb_assert (len <= oldlen); | |
7622 | } | |
7623 | ||
7624 | do_cleanups (old_chain); | |
7625 | ||
7626 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7627 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7628 | len, unit_size, xfered_len); |
8acf9577 YQ |
7629 | if (res == TARGET_XFER_OK) |
7630 | return TARGET_XFER_OK; | |
7631 | else | |
7632 | { | |
7633 | /* No use trying further, we know some memory starting | |
7634 | at MEMADDR isn't available. */ | |
7635 | *xfered_len = len; | |
7636 | return TARGET_XFER_UNAVAILABLE; | |
7637 | } | |
7638 | } | |
7639 | ||
7640 | /* Don't try to read more than how much is available, in | |
7641 | case the target implements the deprecated QTro packet to | |
7642 | cater for older GDBs (the target's knowledge of read-only | |
7643 | sections may be outdated by now). */ | |
7644 | len = VEC_index (mem_range_s, available, 0)->length; | |
7645 | ||
7646 | do_cleanups (old_chain); | |
7647 | } | |
7648 | } | |
7649 | ||
124e13d9 | 7650 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7651 | } |
74531fed | 7652 | |
c906108c | 7653 | \f |
c906108c | 7654 | |
a76d924d DJ |
7655 | /* Sends a packet with content determined by the printf format string |
7656 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7657 | whether the packet was a success, a failure, or unknown. */ | |
7658 | ||
77b64a49 PA |
7659 | static enum packet_result remote_send_printf (const char *format, ...) |
7660 | ATTRIBUTE_PRINTF (1, 2); | |
7661 | ||
2c0b251b | 7662 | static enum packet_result |
a76d924d DJ |
7663 | remote_send_printf (const char *format, ...) |
7664 | { | |
7665 | struct remote_state *rs = get_remote_state (); | |
7666 | int max_size = get_remote_packet_size (); | |
a76d924d | 7667 | va_list ap; |
a744cf53 | 7668 | |
a76d924d DJ |
7669 | va_start (ap, format); |
7670 | ||
7671 | rs->buf[0] = '\0'; | |
7672 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7673 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7674 | |
7675 | if (putpkt (rs->buf) < 0) | |
7676 | error (_("Communication problem with target.")); | |
7677 | ||
7678 | rs->buf[0] = '\0'; | |
7679 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7680 | ||
7681 | return packet_check_result (rs->buf); | |
7682 | } | |
7683 | ||
7684 | static void | |
7685 | restore_remote_timeout (void *p) | |
7686 | { | |
7687 | int value = *(int *)p; | |
a744cf53 | 7688 | |
a76d924d DJ |
7689 | remote_timeout = value; |
7690 | } | |
7691 | ||
7692 | /* Flash writing can take quite some time. We'll set | |
7693 | effectively infinite timeout for flash operations. | |
7694 | In future, we'll need to decide on a better approach. */ | |
7695 | static const int remote_flash_timeout = 1000; | |
7696 | ||
7697 | static void | |
7698 | remote_flash_erase (struct target_ops *ops, | |
7699 | ULONGEST address, LONGEST length) | |
7700 | { | |
f5656ead | 7701 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7702 | int saved_remote_timeout = remote_timeout; |
7703 | enum packet_result ret; | |
a76d924d DJ |
7704 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7705 | &saved_remote_timeout); | |
a744cf53 | 7706 | |
a76d924d DJ |
7707 | remote_timeout = remote_flash_timeout; |
7708 | ||
7709 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7710 | phex (address, addr_size), |
a76d924d DJ |
7711 | phex (length, 4)); |
7712 | switch (ret) | |
7713 | { | |
7714 | case PACKET_UNKNOWN: | |
7715 | error (_("Remote target does not support flash erase")); | |
7716 | case PACKET_ERROR: | |
7717 | error (_("Error erasing flash with vFlashErase packet")); | |
7718 | default: | |
7719 | break; | |
7720 | } | |
7721 | ||
7722 | do_cleanups (back_to); | |
7723 | } | |
7724 | ||
9b409511 YQ |
7725 | static enum target_xfer_status |
7726 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7727 | ULONGEST length, ULONGEST *xfered_len, | |
7728 | const gdb_byte *data) | |
a76d924d DJ |
7729 | { |
7730 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7731 | enum target_xfer_status ret; |
a76d924d | 7732 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7733 | &saved_remote_timeout); |
a76d924d DJ |
7734 | |
7735 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7736 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 7737 | xfered_len,'X', 0); |
a76d924d DJ |
7738 | do_cleanups (back_to); |
7739 | ||
7740 | return ret; | |
7741 | } | |
7742 | ||
7743 | static void | |
7744 | remote_flash_done (struct target_ops *ops) | |
7745 | { | |
7746 | int saved_remote_timeout = remote_timeout; | |
7747 | int ret; | |
7748 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7749 | &saved_remote_timeout); | |
7750 | ||
7751 | remote_timeout = remote_flash_timeout; | |
7752 | ret = remote_send_printf ("vFlashDone"); | |
7753 | do_cleanups (back_to); | |
7754 | ||
7755 | switch (ret) | |
7756 | { | |
7757 | case PACKET_UNKNOWN: | |
7758 | error (_("Remote target does not support vFlashDone")); | |
7759 | case PACKET_ERROR: | |
7760 | error (_("Error finishing flash operation")); | |
7761 | default: | |
7762 | break; | |
7763 | } | |
7764 | } | |
7765 | ||
c906108c | 7766 | static void |
fba45db2 | 7767 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7768 | { |
7769 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7770 | } | |
7771 | \f | |
7772 | /* Stuff for dealing with the packets which are part of this protocol. | |
7773 | See comment at top of file for details. */ | |
7774 | ||
1927e618 PA |
7775 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7776 | error to higher layers. Called when a serial error is detected. | |
7777 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7778 | the system error message for errno at function entry and final dot |
7779 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7780 | |
7781 | static void | |
7782 | unpush_and_perror (const char *string) | |
7783 | { | |
d6cb50a2 | 7784 | int saved_errno = errno; |
1927e618 PA |
7785 | |
7786 | remote_unpush_target (); | |
d6cb50a2 JK |
7787 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7788 | safe_strerror (saved_errno)); | |
1927e618 PA |
7789 | } |
7790 | ||
0876f84a | 7791 | /* Read a single character from the remote end. */ |
c906108c SS |
7792 | |
7793 | static int | |
fba45db2 | 7794 | readchar (int timeout) |
c906108c SS |
7795 | { |
7796 | int ch; | |
5d93a237 | 7797 | struct remote_state *rs = get_remote_state (); |
c906108c | 7798 | |
5d93a237 | 7799 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7800 | |
2acceee2 | 7801 | if (ch >= 0) |
0876f84a | 7802 | return ch; |
2acceee2 JM |
7803 | |
7804 | switch ((enum serial_rc) ch) | |
c906108c SS |
7805 | { |
7806 | case SERIAL_EOF: | |
78a095c3 | 7807 | remote_unpush_target (); |
598d3636 | 7808 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7809 | /* no return */ |
c906108c | 7810 | case SERIAL_ERROR: |
1927e618 PA |
7811 | unpush_and_perror (_("Remote communication error. " |
7812 | "Target disconnected.")); | |
2acceee2 | 7813 | /* no return */ |
c906108c | 7814 | case SERIAL_TIMEOUT: |
2acceee2 | 7815 | break; |
c906108c | 7816 | } |
2acceee2 | 7817 | return ch; |
c906108c SS |
7818 | } |
7819 | ||
c33e31fd PA |
7820 | /* Wrapper for serial_write that closes the target and throws if |
7821 | writing fails. */ | |
7822 | ||
7823 | static void | |
7824 | remote_serial_write (const char *str, int len) | |
7825 | { | |
5d93a237 TT |
7826 | struct remote_state *rs = get_remote_state (); |
7827 | ||
7828 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7829 | { |
1927e618 PA |
7830 | unpush_and_perror (_("Remote communication error. " |
7831 | "Target disconnected.")); | |
c33e31fd PA |
7832 | } |
7833 | } | |
7834 | ||
6d820c5c DJ |
7835 | /* Send the command in *BUF to the remote machine, and read the reply |
7836 | into *BUF. Report an error if we get an error reply. Resize | |
7837 | *BUF using xrealloc if necessary to hold the result, and update | |
7838 | *SIZEOF_BUF. */ | |
c906108c SS |
7839 | |
7840 | static void | |
6d820c5c DJ |
7841 | remote_send (char **buf, |
7842 | long *sizeof_buf) | |
c906108c | 7843 | { |
6d820c5c | 7844 | putpkt (*buf); |
c2d11a7d | 7845 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7846 | |
6d820c5c DJ |
7847 | if ((*buf)[0] == 'E') |
7848 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7849 | } |
7850 | ||
6e5abd65 PA |
7851 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7852 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7853 | etc. The caller is responsible for releasing the returned | |
7854 | memory. */ | |
7855 | ||
7856 | static char * | |
7857 | escape_buffer (const char *buf, int n) | |
7858 | { | |
7859 | struct cleanup *old_chain; | |
7860 | struct ui_file *stb; | |
7861 | char *str; | |
6e5abd65 PA |
7862 | |
7863 | stb = mem_fileopen (); | |
7864 | old_chain = make_cleanup_ui_file_delete (stb); | |
7865 | ||
6ef284bd | 7866 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7867 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7868 | do_cleanups (old_chain); |
7869 | return str; | |
7870 | } | |
7871 | ||
c906108c SS |
7872 | /* Display a null-terminated packet on stdout, for debugging, using C |
7873 | string notation. */ | |
7874 | ||
7875 | static void | |
baa336ce | 7876 | print_packet (const char *buf) |
c906108c SS |
7877 | { |
7878 | puts_filtered ("\""); | |
43e526b9 | 7879 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7880 | puts_filtered ("\""); |
7881 | } | |
7882 | ||
7883 | int | |
baa336ce | 7884 | putpkt (const char *buf) |
c906108c SS |
7885 | { |
7886 | return putpkt_binary (buf, strlen (buf)); | |
7887 | } | |
7888 | ||
7889 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7890 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7891 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7892 | and for a possible /0 if we are debugging (remote_debug) and want |
7893 | to print the sent packet as a string. */ | |
c906108c SS |
7894 | |
7895 | static int | |
baa336ce | 7896 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7897 | { |
2d717e4f | 7898 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7899 | int i; |
7900 | unsigned char csum = 0; | |
a5c0808e PA |
7901 | char *buf2 = xmalloc (cnt + 6); |
7902 | struct cleanup *old_chain = make_cleanup (xfree, buf2); | |
085dd6e6 | 7903 | |
c906108c SS |
7904 | int ch; |
7905 | int tcount = 0; | |
7906 | char *p; | |
dd61ec5c | 7907 | char *message; |
c906108c | 7908 | |
e24a49d8 PA |
7909 | /* Catch cases like trying to read memory or listing threads while |
7910 | we're waiting for a stop reply. The remote server wouldn't be | |
7911 | ready to handle this request, so we'd hang and timeout. We don't | |
7912 | have to worry about this in synchronous mode, because in that | |
7913 | case it's not possible to issue a command while the target is | |
74531fed PA |
7914 | running. This is not a problem in non-stop mode, because in that |
7915 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7916 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7917 | { |
7918 | error (_("Cannot execute this command while the target is running.\n" | |
7919 | "Use the \"interrupt\" command to stop the target\n" | |
7920 | "and then try again.")); | |
7921 | } | |
e24a49d8 | 7922 | |
2d717e4f DJ |
7923 | /* We're sending out a new packet. Make sure we don't look at a |
7924 | stale cached response. */ | |
7925 | rs->cached_wait_status = 0; | |
7926 | ||
c906108c SS |
7927 | /* Copy the packet into buffer BUF2, encapsulating it |
7928 | and giving it a checksum. */ | |
7929 | ||
c906108c SS |
7930 | p = buf2; |
7931 | *p++ = '$'; | |
7932 | ||
7933 | for (i = 0; i < cnt; i++) | |
7934 | { | |
7935 | csum += buf[i]; | |
7936 | *p++ = buf[i]; | |
7937 | } | |
7938 | *p++ = '#'; | |
7939 | *p++ = tohex ((csum >> 4) & 0xf); | |
7940 | *p++ = tohex (csum & 0xf); | |
7941 | ||
7942 | /* Send it over and over until we get a positive ack. */ | |
7943 | ||
7944 | while (1) | |
7945 | { | |
7946 | int started_error_output = 0; | |
7947 | ||
7948 | if (remote_debug) | |
7949 | { | |
6e5abd65 PA |
7950 | struct cleanup *old_chain; |
7951 | char *str; | |
7952 | ||
c906108c | 7953 | *p = '\0'; |
6e5abd65 PA |
7954 | str = escape_buffer (buf2, p - buf2); |
7955 | old_chain = make_cleanup (xfree, str); | |
7956 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7957 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7958 | do_cleanups (old_chain); |
c906108c | 7959 | } |
c33e31fd | 7960 | remote_serial_write (buf2, p - buf2); |
c906108c | 7961 | |
a6f3e723 SL |
7962 | /* If this is a no acks version of the remote protocol, send the |
7963 | packet and move on. */ | |
7964 | if (rs->noack_mode) | |
7965 | break; | |
7966 | ||
74531fed PA |
7967 | /* Read until either a timeout occurs (-2) or '+' is read. |
7968 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7969 | while (1) |
7970 | { | |
7971 | ch = readchar (remote_timeout); | |
7972 | ||
c5aa993b | 7973 | if (remote_debug) |
c906108c SS |
7974 | { |
7975 | switch (ch) | |
7976 | { | |
7977 | case '+': | |
1216fa2c | 7978 | case '-': |
c906108c SS |
7979 | case SERIAL_TIMEOUT: |
7980 | case '$': | |
74531fed | 7981 | case '%': |
c906108c SS |
7982 | if (started_error_output) |
7983 | { | |
7984 | putchar_unfiltered ('\n'); | |
7985 | started_error_output = 0; | |
7986 | } | |
7987 | } | |
7988 | } | |
7989 | ||
7990 | switch (ch) | |
7991 | { | |
7992 | case '+': | |
7993 | if (remote_debug) | |
0f71a2f6 | 7994 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 7995 | do_cleanups (old_chain); |
c906108c | 7996 | return 1; |
1216fa2c AC |
7997 | case '-': |
7998 | if (remote_debug) | |
7999 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8000 | /* FALLTHROUGH */ |
c906108c | 8001 | case SERIAL_TIMEOUT: |
c5aa993b | 8002 | tcount++; |
c906108c | 8003 | if (tcount > 3) |
a5c0808e PA |
8004 | { |
8005 | do_cleanups (old_chain); | |
8006 | return 0; | |
8007 | } | |
23860348 | 8008 | break; /* Retransmit buffer. */ |
c906108c SS |
8009 | case '$': |
8010 | { | |
40e3f985 | 8011 | if (remote_debug) |
2bc416ba | 8012 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8013 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8014 | /* It's probably an old response sent because an ACK |
8015 | was lost. Gobble up the packet and ack it so it | |
8016 | doesn't get retransmitted when we resend this | |
8017 | packet. */ | |
6d820c5c | 8018 | skip_frame (); |
c33e31fd | 8019 | remote_serial_write ("+", 1); |
23860348 | 8020 | continue; /* Now, go look for +. */ |
c906108c | 8021 | } |
74531fed PA |
8022 | |
8023 | case '%': | |
8024 | { | |
8025 | int val; | |
8026 | ||
8027 | /* If we got a notification, handle it, and go back to looking | |
8028 | for an ack. */ | |
8029 | /* We've found the start of a notification. Now | |
8030 | collect the data. */ | |
8031 | val = read_frame (&rs->buf, &rs->buf_size); | |
8032 | if (val >= 0) | |
8033 | { | |
8034 | if (remote_debug) | |
8035 | { | |
6e5abd65 PA |
8036 | struct cleanup *old_chain; |
8037 | char *str; | |
8038 | ||
8039 | str = escape_buffer (rs->buf, val); | |
8040 | old_chain = make_cleanup (xfree, str); | |
8041 | fprintf_unfiltered (gdb_stdlog, | |
8042 | " Notification received: %s\n", | |
8043 | str); | |
8044 | do_cleanups (old_chain); | |
74531fed | 8045 | } |
5965e028 | 8046 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8047 | /* We're in sync now, rewait for the ack. */ |
8048 | tcount = 0; | |
8049 | } | |
8050 | else | |
8051 | { | |
8052 | if (remote_debug) | |
8053 | { | |
8054 | if (!started_error_output) | |
8055 | { | |
8056 | started_error_output = 1; | |
8057 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8058 | } | |
8059 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8060 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8061 | } | |
8062 | } | |
8063 | continue; | |
8064 | } | |
8065 | /* fall-through */ | |
c906108c SS |
8066 | default: |
8067 | if (remote_debug) | |
8068 | { | |
8069 | if (!started_error_output) | |
8070 | { | |
8071 | started_error_output = 1; | |
0f71a2f6 | 8072 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8073 | } |
0f71a2f6 | 8074 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8075 | } |
8076 | continue; | |
8077 | } | |
23860348 | 8078 | break; /* Here to retransmit. */ |
c906108c SS |
8079 | } |
8080 | ||
8081 | #if 0 | |
8082 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8083 | able to get out next time we call QUIT, without anything as |
8084 | violent as interrupt_query. If we want to provide a way out of | |
8085 | here without getting to the next QUIT, it should be based on | |
8086 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8087 | if (quit_flag) |
8088 | { | |
8089 | quit_flag = 0; | |
8090 | interrupt_query (); | |
8091 | } | |
8092 | #endif | |
8093 | } | |
a5c0808e PA |
8094 | |
8095 | do_cleanups (old_chain); | |
a6f3e723 | 8096 | return 0; |
c906108c SS |
8097 | } |
8098 | ||
6d820c5c DJ |
8099 | /* Come here after finding the start of a frame when we expected an |
8100 | ack. Do our best to discard the rest of this packet. */ | |
8101 | ||
8102 | static void | |
8103 | skip_frame (void) | |
8104 | { | |
8105 | int c; | |
8106 | ||
8107 | while (1) | |
8108 | { | |
8109 | c = readchar (remote_timeout); | |
8110 | switch (c) | |
8111 | { | |
8112 | case SERIAL_TIMEOUT: | |
8113 | /* Nothing we can do. */ | |
8114 | return; | |
8115 | case '#': | |
8116 | /* Discard the two bytes of checksum and stop. */ | |
8117 | c = readchar (remote_timeout); | |
8118 | if (c >= 0) | |
8119 | c = readchar (remote_timeout); | |
8120 | ||
8121 | return; | |
8122 | case '*': /* Run length encoding. */ | |
8123 | /* Discard the repeat count. */ | |
8124 | c = readchar (remote_timeout); | |
8125 | if (c < 0) | |
8126 | return; | |
8127 | break; | |
8128 | default: | |
8129 | /* A regular character. */ | |
8130 | break; | |
8131 | } | |
8132 | } | |
8133 | } | |
8134 | ||
c906108c | 8135 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8136 | into *BUF, verifying the checksum, length, and handling run-length |
8137 | compression. NUL terminate the buffer. If there is not enough room, | |
8138 | expand *BUF using xrealloc. | |
c906108c | 8139 | |
c2d11a7d JM |
8140 | Returns -1 on error, number of characters in buffer (ignoring the |
8141 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8142 | SERIAL status indications). */ |
c2d11a7d JM |
8143 | |
8144 | static long | |
6d820c5c DJ |
8145 | read_frame (char **buf_p, |
8146 | long *sizeof_buf) | |
c906108c SS |
8147 | { |
8148 | unsigned char csum; | |
c2d11a7d | 8149 | long bc; |
c906108c | 8150 | int c; |
6d820c5c | 8151 | char *buf = *buf_p; |
a6f3e723 | 8152 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8153 | |
8154 | csum = 0; | |
c2d11a7d | 8155 | bc = 0; |
c906108c SS |
8156 | |
8157 | while (1) | |
8158 | { | |
8159 | c = readchar (remote_timeout); | |
c906108c SS |
8160 | switch (c) |
8161 | { | |
8162 | case SERIAL_TIMEOUT: | |
8163 | if (remote_debug) | |
0f71a2f6 | 8164 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8165 | return -1; |
c906108c SS |
8166 | case '$': |
8167 | if (remote_debug) | |
0f71a2f6 JM |
8168 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8169 | gdb_stdlog); | |
23860348 | 8170 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8171 | case '#': |
8172 | { | |
8173 | unsigned char pktcsum; | |
e1b09194 AC |
8174 | int check_0 = 0; |
8175 | int check_1 = 0; | |
c906108c | 8176 | |
c2d11a7d | 8177 | buf[bc] = '\0'; |
c906108c | 8178 | |
e1b09194 AC |
8179 | check_0 = readchar (remote_timeout); |
8180 | if (check_0 >= 0) | |
8181 | check_1 = readchar (remote_timeout); | |
802188a7 | 8182 | |
e1b09194 AC |
8183 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8184 | { | |
8185 | if (remote_debug) | |
2bc416ba | 8186 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8187 | gdb_stdlog); |
e1b09194 AC |
8188 | return -1; |
8189 | } | |
8190 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8191 | { |
8192 | if (remote_debug) | |
2bc416ba | 8193 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8194 | gdb_stdlog); |
40e3f985 FN |
8195 | return -1; |
8196 | } | |
c906108c | 8197 | |
a6f3e723 SL |
8198 | /* Don't recompute the checksum; with no ack packets we |
8199 | don't have any way to indicate a packet retransmission | |
8200 | is necessary. */ | |
8201 | if (rs->noack_mode) | |
8202 | return bc; | |
8203 | ||
e1b09194 | 8204 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8205 | if (csum == pktcsum) |
c2d11a7d | 8206 | return bc; |
c906108c | 8207 | |
c5aa993b | 8208 | if (remote_debug) |
c906108c | 8209 | { |
6e5abd65 PA |
8210 | struct cleanup *old_chain; |
8211 | char *str; | |
8212 | ||
8213 | str = escape_buffer (buf, bc); | |
8214 | old_chain = make_cleanup (xfree, str); | |
8215 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8216 | "Bad checksum, sentsum=0x%x, " |
8217 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8218 | pktcsum, csum, str); |
8219 | do_cleanups (old_chain); | |
c906108c | 8220 | } |
c2d11a7d | 8221 | /* Number of characters in buffer ignoring trailing |
23860348 | 8222 | NULL. */ |
c2d11a7d | 8223 | return -1; |
c906108c | 8224 | } |
23860348 | 8225 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8226 | { |
8227 | int repeat; | |
c906108c | 8228 | |
a744cf53 | 8229 | csum += c; |
b4501125 AC |
8230 | c = readchar (remote_timeout); |
8231 | csum += c; | |
23860348 | 8232 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8233 | |
23860348 | 8234 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8235 | |
6d820c5c | 8236 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8237 | { |
6d820c5c DJ |
8238 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8239 | { | |
8240 | /* Make some more room in the buffer. */ | |
8241 | *sizeof_buf += repeat; | |
8242 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8243 | buf = *buf_p; | |
8244 | } | |
8245 | ||
c2d11a7d JM |
8246 | memset (&buf[bc], buf[bc - 1], repeat); |
8247 | bc += repeat; | |
c2c6d25f JM |
8248 | continue; |
8249 | } | |
8250 | ||
c2d11a7d | 8251 | buf[bc] = '\0'; |
6d820c5c | 8252 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8253 | return -1; |
c2c6d25f | 8254 | } |
c906108c | 8255 | default: |
6d820c5c | 8256 | if (bc >= *sizeof_buf - 1) |
c906108c | 8257 | { |
6d820c5c DJ |
8258 | /* Make some more room in the buffer. */ |
8259 | *sizeof_buf *= 2; | |
8260 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8261 | buf = *buf_p; | |
c906108c SS |
8262 | } |
8263 | ||
6d820c5c DJ |
8264 | buf[bc++] = c; |
8265 | csum += c; | |
8266 | continue; | |
c906108c SS |
8267 | } |
8268 | } | |
8269 | } | |
8270 | ||
8271 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8272 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8273 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8274 | rather than timing out; this is used (in synchronous mode) to wait | |
8275 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8276 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8277 | don't have to change all the calls to getpkt to deal with the | |
8278 | return value, because at the moment I don't know what the right | |
23860348 | 8279 | thing to do it for those. */ |
c906108c | 8280 | void |
6d820c5c DJ |
8281 | getpkt (char **buf, |
8282 | long *sizeof_buf, | |
c2d11a7d | 8283 | int forever) |
d9fcf2fb JM |
8284 | { |
8285 | int timed_out; | |
8286 | ||
8287 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8288 | } | |
8289 | ||
8290 | ||
8291 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8292 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8293 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8294 | rather than timing out; this is used (in synchronous mode) to wait | |
8295 | for a target that is is executing user code to stop. If FOREVER == | |
8296 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8297 | indication of this to the caller. Otherwise return the number of |
8298 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8299 | enough reason to return to the caller. *IS_NOTIF is an output |
8300 | boolean that indicates whether *BUF holds a notification or not | |
8301 | (a regular packet). */ | |
74531fed | 8302 | |
3172dc30 | 8303 | static int |
74531fed | 8304 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8305 | int expecting_notif, int *is_notif) |
c906108c | 8306 | { |
2d717e4f | 8307 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8308 | int c; |
8309 | int tries; | |
8310 | int timeout; | |
df4b58fe | 8311 | int val = -1; |
c906108c | 8312 | |
2d717e4f DJ |
8313 | /* We're reading a new response. Make sure we don't look at a |
8314 | previously cached response. */ | |
8315 | rs->cached_wait_status = 0; | |
8316 | ||
6d820c5c | 8317 | strcpy (*buf, "timeout"); |
c906108c SS |
8318 | |
8319 | if (forever) | |
74531fed PA |
8320 | timeout = watchdog > 0 ? watchdog : -1; |
8321 | else if (expecting_notif) | |
8322 | timeout = 0; /* There should already be a char in the buffer. If | |
8323 | not, bail out. */ | |
c906108c SS |
8324 | else |
8325 | timeout = remote_timeout; | |
8326 | ||
8327 | #define MAX_TRIES 3 | |
8328 | ||
74531fed PA |
8329 | /* Process any number of notifications, and then return when |
8330 | we get a packet. */ | |
8331 | for (;;) | |
c906108c | 8332 | { |
d9c43928 | 8333 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8334 | times. */ |
8335 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8336 | { |
74531fed PA |
8337 | /* This can loop forever if the remote side sends us |
8338 | characters continuously, but if it pauses, we'll get | |
8339 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8340 | we'll count that as a retry. | |
8341 | ||
8342 | Note that even when forever is set, we will only wait | |
8343 | forever prior to the start of a packet. After that, we | |
8344 | expect characters to arrive at a brisk pace. They should | |
8345 | show up within remote_timeout intervals. */ | |
8346 | do | |
8347 | c = readchar (timeout); | |
8348 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8349 | |
8350 | if (c == SERIAL_TIMEOUT) | |
8351 | { | |
74531fed PA |
8352 | if (expecting_notif) |
8353 | return -1; /* Don't complain, it's normal to not get | |
8354 | anything in this case. */ | |
8355 | ||
23860348 | 8356 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8357 | { |
2acceee2 | 8358 | QUIT; |
78a095c3 | 8359 | remote_unpush_target (); |
598d3636 JK |
8360 | throw_error (TARGET_CLOSE_ERROR, |
8361 | _("Watchdog timeout has expired. " | |
8362 | "Target detached.")); | |
c906108c | 8363 | } |
c906108c | 8364 | if (remote_debug) |
0f71a2f6 | 8365 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8366 | } |
74531fed PA |
8367 | else |
8368 | { | |
8369 | /* We've found the start of a packet or notification. | |
8370 | Now collect the data. */ | |
8371 | val = read_frame (buf, sizeof_buf); | |
8372 | if (val >= 0) | |
8373 | break; | |
8374 | } | |
8375 | ||
c33e31fd | 8376 | remote_serial_write ("-", 1); |
c906108c | 8377 | } |
c906108c | 8378 | |
74531fed PA |
8379 | if (tries > MAX_TRIES) |
8380 | { | |
8381 | /* We have tried hard enough, and just can't receive the | |
8382 | packet/notification. Give up. */ | |
8383 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8384 | |
74531fed PA |
8385 | /* Skip the ack char if we're in no-ack mode. */ |
8386 | if (!rs->noack_mode) | |
c33e31fd | 8387 | remote_serial_write ("+", 1); |
74531fed PA |
8388 | return -1; |
8389 | } | |
c906108c | 8390 | |
74531fed PA |
8391 | /* If we got an ordinary packet, return that to our caller. */ |
8392 | if (c == '$') | |
c906108c SS |
8393 | { |
8394 | if (remote_debug) | |
43e526b9 | 8395 | { |
6e5abd65 PA |
8396 | struct cleanup *old_chain; |
8397 | char *str; | |
8398 | ||
8399 | str = escape_buffer (*buf, val); | |
8400 | old_chain = make_cleanup (xfree, str); | |
8401 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8402 | do_cleanups (old_chain); | |
43e526b9 | 8403 | } |
a6f3e723 SL |
8404 | |
8405 | /* Skip the ack char if we're in no-ack mode. */ | |
8406 | if (!rs->noack_mode) | |
c33e31fd | 8407 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8408 | if (is_notif != NULL) |
8409 | *is_notif = 0; | |
0876f84a | 8410 | return val; |
c906108c SS |
8411 | } |
8412 | ||
74531fed PA |
8413 | /* If we got a notification, handle it, and go back to looking |
8414 | for a packet. */ | |
8415 | else | |
8416 | { | |
8417 | gdb_assert (c == '%'); | |
8418 | ||
8419 | if (remote_debug) | |
8420 | { | |
6e5abd65 PA |
8421 | struct cleanup *old_chain; |
8422 | char *str; | |
8423 | ||
8424 | str = escape_buffer (*buf, val); | |
8425 | old_chain = make_cleanup (xfree, str); | |
8426 | fprintf_unfiltered (gdb_stdlog, | |
8427 | " Notification received: %s\n", | |
8428 | str); | |
8429 | do_cleanups (old_chain); | |
74531fed | 8430 | } |
fee9eda9 YQ |
8431 | if (is_notif != NULL) |
8432 | *is_notif = 1; | |
c906108c | 8433 | |
5965e028 | 8434 | handle_notification (rs->notif_state, *buf); |
c906108c | 8435 | |
74531fed | 8436 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8437 | |
74531fed | 8438 | if (expecting_notif) |
fee9eda9 | 8439 | return val; |
74531fed PA |
8440 | } |
8441 | } | |
8442 | } | |
8443 | ||
8444 | static int | |
8445 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8446 | { | |
fee9eda9 | 8447 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8448 | } |
8449 | ||
8450 | static int | |
fee9eda9 YQ |
8451 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8452 | int *is_notif) | |
74531fed | 8453 | { |
fee9eda9 YQ |
8454 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8455 | is_notif); | |
c906108c | 8456 | } |
74531fed | 8457 | |
cbb8991c DB |
8458 | /* Check whether EVENT is a fork event for the process specified |
8459 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8460 | ||
8461 | static int | |
8462 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8463 | QUEUE_ITER (stop_reply_p) *iter, | |
8464 | stop_reply_p event, | |
8465 | void *data) | |
8466 | { | |
8467 | struct queue_iter_param *param = data; | |
8468 | int parent_pid = *(int *) param->input; | |
8469 | ||
8470 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8471 | { | |
8472 | struct remote_state *rs = get_remote_state (); | |
8473 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8474 | int res; | |
8475 | ||
8476 | res = remote_vkill (child_pid, rs); | |
8477 | if (res != 0) | |
8478 | error (_("Can't kill fork child process %d"), child_pid); | |
8479 | } | |
8480 | ||
8481 | return 1; | |
8482 | } | |
8483 | ||
8484 | /* Kill any new fork children of process PID that haven't been | |
8485 | processed by follow_fork. */ | |
8486 | ||
8487 | static void | |
8488 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8489 | { | |
8490 | struct thread_info *thread; | |
8491 | struct notif_client *notif = ¬if_client_stop; | |
8492 | struct queue_iter_param param; | |
8493 | ||
8494 | /* Kill the fork child threads of any threads in process PID | |
8495 | that are stopped at a fork event. */ | |
8496 | ALL_NON_EXITED_THREADS (thread) | |
8497 | { | |
8498 | struct target_waitstatus *ws = &thread->pending_follow; | |
8499 | ||
8500 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8501 | { | |
8502 | struct remote_state *rs = get_remote_state (); | |
8503 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8504 | int res; | |
8505 | ||
8506 | res = remote_vkill (child_pid, rs); | |
8507 | if (res != 0) | |
8508 | error (_("Can't kill fork child process %d"), child_pid); | |
8509 | } | |
8510 | } | |
8511 | ||
8512 | /* Check for any pending fork events (not reported or processed yet) | |
8513 | in process PID and kill those fork child threads as well. */ | |
8514 | remote_notif_get_pending_events (notif); | |
8515 | param.input = &pid; | |
8516 | param.output = NULL; | |
8517 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8518 | kill_child_of_pending_fork, ¶m); | |
8519 | } | |
8520 | ||
c906108c SS |
8521 | \f |
8522 | static void | |
7d85a9c0 | 8523 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8524 | { |
0fdf84ca PA |
8525 | |
8526 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8527 | aren't on speaking terms with the remote system. */ |
492d29ea | 8528 | TRY |
0fdf84ca PA |
8529 | { |
8530 | putpkt ("k"); | |
8531 | } | |
492d29ea | 8532 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8533 | { |
8534 | if (ex.error == TARGET_CLOSE_ERROR) | |
8535 | { | |
8536 | /* If we got an (EOF) error that caused the target | |
8537 | to go away, then we're done, that's what we wanted. | |
8538 | "k" is susceptible to cause a premature EOF, given | |
8539 | that the remote server isn't actually required to | |
8540 | reply to "k", and it can happen that it doesn't | |
8541 | even get to reply ACK to the "k". */ | |
8542 | return; | |
8543 | } | |
8544 | ||
8545 | /* Otherwise, something went wrong. We didn't actually kill | |
8546 | the target. Just propagate the exception, and let the | |
8547 | user or higher layers decide what to do. */ | |
8548 | throw_exception (ex); | |
8549 | } | |
492d29ea | 8550 | END_CATCH |
43ff13b4 | 8551 | |
0fdf84ca PA |
8552 | /* We've killed the remote end, we get to mourn it. Since this is |
8553 | target remote, single-process, mourning the inferior also | |
8554 | unpushes remote_ops. */ | |
43ff13b4 JM |
8555 | target_mourn_inferior (); |
8556 | } | |
8557 | ||
82f73884 PA |
8558 | static int |
8559 | remote_vkill (int pid, struct remote_state *rs) | |
8560 | { | |
4082afcc | 8561 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8562 | return -1; |
8563 | ||
8564 | /* Tell the remote target to detach. */ | |
bba74b36 | 8565 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8566 | putpkt (rs->buf); |
8567 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8568 | ||
4082afcc PA |
8569 | switch (packet_ok (rs->buf, |
8570 | &remote_protocol_packets[PACKET_vKill])) | |
8571 | { | |
8572 | case PACKET_OK: | |
8573 | return 0; | |
8574 | case PACKET_ERROR: | |
8575 | return 1; | |
8576 | case PACKET_UNKNOWN: | |
8577 | return -1; | |
8578 | default: | |
8579 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8580 | } | |
82f73884 PA |
8581 | } |
8582 | ||
8583 | static void | |
7d85a9c0 | 8584 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8585 | { |
8586 | int res; | |
8587 | int pid = ptid_get_pid (inferior_ptid); | |
8588 | struct remote_state *rs = get_remote_state (); | |
8589 | ||
cbb8991c DB |
8590 | /* If we're stopped while forking and we haven't followed yet, kill the |
8591 | child task. We need to do this before killing the parent task | |
8592 | because if this is a vfork then the parent will be sleeping. */ | |
8593 | kill_new_fork_children (pid, rs); | |
8594 | ||
82f73884 | 8595 | res = remote_vkill (pid, rs); |
901f9912 | 8596 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8597 | { |
8598 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8599 | to specify the pid. */ | |
8600 | ||
8601 | putpkt ("k"); | |
8602 | #if 0 | |
8603 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8604 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8605 | res = 1; | |
8606 | #else | |
8607 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8608 | we do or not. For the existing stubs, kill is a noop. */ | |
8609 | res = 0; | |
8610 | #endif | |
8611 | } | |
8612 | ||
8613 | if (res != 0) | |
8614 | error (_("Can't kill process")); | |
8615 | ||
82f73884 PA |
8616 | target_mourn_inferior (); |
8617 | } | |
8618 | ||
c906108c | 8619 | static void |
20f796c9 | 8620 | remote_mourn (struct target_ops *target) |
c906108c SS |
8621 | { |
8622 | unpush_target (target); | |
ce5ce7ed | 8623 | |
8a2492ee PA |
8624 | /* remote_close takes care of doing most of the clean up. */ |
8625 | generic_mourn_inferior (); | |
c906108c SS |
8626 | } |
8627 | ||
2d717e4f | 8628 | static void |
20f796c9 | 8629 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8630 | { |
8631 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8632 | |
e24a49d8 PA |
8633 | /* In case we got here due to an error, but we're going to stay |
8634 | connected. */ | |
8635 | rs->waiting_for_stop_reply = 0; | |
8636 | ||
dc1981d7 PA |
8637 | /* If the current general thread belonged to the process we just |
8638 | detached from or has exited, the remote side current general | |
8639 | thread becomes undefined. Considering a case like this: | |
8640 | ||
8641 | - We just got here due to a detach. | |
8642 | - The process that we're detaching from happens to immediately | |
8643 | report a global breakpoint being hit in non-stop mode, in the | |
8644 | same thread we had selected before. | |
8645 | - GDB attaches to this process again. | |
8646 | - This event happens to be the next event we handle. | |
8647 | ||
8648 | GDB would consider that the current general thread didn't need to | |
8649 | be set on the stub side (with Hg), since for all it knew, | |
8650 | GENERAL_THREAD hadn't changed. | |
8651 | ||
8652 | Notice that although in all-stop mode, the remote server always | |
8653 | sets the current thread to the thread reporting the stop event, | |
8654 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8655 | not* change the current thread when reporting a breakpoint hit, | |
8656 | due to the decoupling of event reporting and event handling. | |
8657 | ||
8658 | To keep things simple, we always invalidate our notion of the | |
8659 | current thread. */ | |
47f8a51d | 8660 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8661 | |
2d717e4f DJ |
8662 | /* Unlike "target remote", we do not want to unpush the target; then |
8663 | the next time the user says "run", we won't be connected. */ | |
8664 | ||
48aa3c27 PA |
8665 | /* Call common code to mark the inferior as not running. */ |
8666 | generic_mourn_inferior (); | |
8667 | ||
d729566a | 8668 | if (!have_inferiors ()) |
2d717e4f | 8669 | { |
82f73884 PA |
8670 | if (!remote_multi_process_p (rs)) |
8671 | { | |
8672 | /* Check whether the target is running now - some remote stubs | |
8673 | automatically restart after kill. */ | |
8674 | putpkt ("?"); | |
8675 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8676 | ||
8677 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8678 | { | |
3e43a32a MS |
8679 | /* Assume that the target has been restarted. Set |
8680 | inferior_ptid so that bits of core GDB realizes | |
8681 | there's something here, e.g., so that the user can | |
8682 | say "kill" again. */ | |
82f73884 PA |
8683 | inferior_ptid = magic_null_ptid; |
8684 | } | |
82f73884 | 8685 | } |
2d717e4f DJ |
8686 | } |
8687 | } | |
c906108c | 8688 | |
03583c20 | 8689 | static int |
2bfc0540 | 8690 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8691 | { |
4082afcc | 8692 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8693 | } |
8694 | ||
8695 | static void | |
8696 | extended_remote_disable_randomization (int val) | |
8697 | { | |
8698 | struct remote_state *rs = get_remote_state (); | |
8699 | char *reply; | |
8700 | ||
bba74b36 YQ |
8701 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8702 | val); | |
03583c20 UW |
8703 | putpkt (rs->buf); |
8704 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8705 | if (*reply == '\0') | |
8706 | error (_("Target does not support QDisableRandomization.")); | |
8707 | if (strcmp (reply, "OK") != 0) | |
8708 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8709 | } | |
8710 | ||
2d717e4f DJ |
8711 | static int |
8712 | extended_remote_run (char *args) | |
8713 | { | |
8714 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8715 | int len; |
94585166 | 8716 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 8717 | |
2d717e4f DJ |
8718 | /* If the user has disabled vRun support, or we have detected that |
8719 | support is not available, do not try it. */ | |
4082afcc | 8720 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8721 | return -1; |
424163ea | 8722 | |
2d717e4f DJ |
8723 | strcpy (rs->buf, "vRun;"); |
8724 | len = strlen (rs->buf); | |
c906108c | 8725 | |
2d717e4f DJ |
8726 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8727 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8728 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8729 | strlen (remote_exec_file)); | |
2d717e4f | 8730 | |
d1a41061 | 8731 | gdb_assert (args != NULL); |
2d717e4f DJ |
8732 | if (*args) |
8733 | { | |
8734 | struct cleanup *back_to; | |
8735 | int i; | |
8736 | char **argv; | |
8737 | ||
d1a41061 | 8738 | argv = gdb_buildargv (args); |
6e366df1 | 8739 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8740 | for (i = 0; argv[i] != NULL; i++) |
8741 | { | |
8742 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8743 | error (_("Argument list too long for run packet")); | |
8744 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8745 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8746 | strlen (argv[i])); | |
2d717e4f DJ |
8747 | } |
8748 | do_cleanups (back_to); | |
8749 | } | |
8750 | ||
8751 | rs->buf[len++] = '\0'; | |
8752 | ||
8753 | putpkt (rs->buf); | |
8754 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8755 | ||
4082afcc | 8756 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8757 | { |
4082afcc | 8758 | case PACKET_OK: |
3405876a | 8759 | /* We have a wait response. All is well. */ |
2d717e4f | 8760 | return 0; |
4082afcc PA |
8761 | case PACKET_UNKNOWN: |
8762 | return -1; | |
8763 | case PACKET_ERROR: | |
2d717e4f DJ |
8764 | if (remote_exec_file[0] == '\0') |
8765 | error (_("Running the default executable on the remote target failed; " | |
8766 | "try \"set remote exec-file\"?")); | |
8767 | else | |
8768 | error (_("Running \"%s\" on the remote target failed"), | |
8769 | remote_exec_file); | |
4082afcc PA |
8770 | default: |
8771 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8772 | } |
c906108c SS |
8773 | } |
8774 | ||
2d717e4f DJ |
8775 | /* In the extended protocol we want to be able to do things like |
8776 | "run" and have them basically work as expected. So we need | |
8777 | a special create_inferior function. We support changing the | |
8778 | executable file and the command line arguments, but not the | |
8779 | environment. */ | |
8780 | ||
43ff13b4 | 8781 | static void |
77a19445 TT |
8782 | extended_remote_create_inferior (struct target_ops *ops, |
8783 | char *exec_file, char *args, | |
8784 | char **env, int from_tty) | |
43ff13b4 | 8785 | { |
3405876a PA |
8786 | int run_worked; |
8787 | char *stop_reply; | |
8788 | struct remote_state *rs = get_remote_state (); | |
94585166 | 8789 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 8790 | |
43ff13b4 | 8791 | /* If running asynchronously, register the target file descriptor |
23860348 | 8792 | with the event loop. */ |
75c99385 | 8793 | if (target_can_async_p ()) |
6a3753b3 | 8794 | target_async (1); |
43ff13b4 | 8795 | |
03583c20 | 8796 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8797 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8798 | extended_remote_disable_randomization (disable_randomization); |
8799 | ||
43ff13b4 | 8800 | /* Now restart the remote server. */ |
3405876a PA |
8801 | run_worked = extended_remote_run (args) != -1; |
8802 | if (!run_worked) | |
2d717e4f DJ |
8803 | { |
8804 | /* vRun was not supported. Fail if we need it to do what the | |
8805 | user requested. */ | |
8806 | if (remote_exec_file[0]) | |
8807 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8808 | if (args[0]) | |
8809 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8810 | |
2d717e4f DJ |
8811 | /* Fall back to "R". */ |
8812 | extended_remote_restart (); | |
8813 | } | |
424163ea | 8814 | |
6c95b8df PA |
8815 | if (!have_inferiors ()) |
8816 | { | |
8817 | /* Clean up from the last time we ran, before we mark the target | |
8818 | running again. This will mark breakpoints uninserted, and | |
8819 | get_offsets may insert breakpoints. */ | |
8820 | init_thread_list (); | |
8821 | init_wait_for_inferior (); | |
8822 | } | |
45280a52 | 8823 | |
3405876a PA |
8824 | /* vRun's success return is a stop reply. */ |
8825 | stop_reply = run_worked ? rs->buf : NULL; | |
8826 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8827 | |
2d717e4f DJ |
8828 | /* Get updated offsets, if the stub uses qOffsets. */ |
8829 | get_offsets (); | |
2d717e4f | 8830 | } |
c906108c | 8831 | \f |
c5aa993b | 8832 | |
b775012e LM |
8833 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8834 | the list of conditions (in agent expression bytecode format), if any, the | |
8835 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8836 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8837 | |
8838 | static int | |
8839 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8840 | struct bp_target_info *bp_tgt, char *buf, |
8841 | char *buf_end) | |
b775012e LM |
8842 | { |
8843 | struct agent_expr *aexpr = NULL; | |
8844 | int i, ix; | |
8845 | char *pkt; | |
8846 | char *buf_start = buf; | |
8847 | ||
8848 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8849 | return 0; | |
8850 | ||
8851 | buf += strlen (buf); | |
bba74b36 | 8852 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8853 | buf++; |
8854 | ||
8855 | /* Send conditions to the target and free the vector. */ | |
8856 | for (ix = 0; | |
8857 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8858 | ix++) | |
8859 | { | |
bba74b36 | 8860 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8861 | buf += strlen (buf); |
8862 | for (i = 0; i < aexpr->len; ++i) | |
8863 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8864 | *buf = '\0'; | |
8865 | } | |
b775012e LM |
8866 | return 0; |
8867 | } | |
8868 | ||
d3ce09f5 SS |
8869 | static void |
8870 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8871 | struct bp_target_info *bp_tgt, char *buf) | |
8872 | { | |
8873 | struct agent_expr *aexpr = NULL; | |
8874 | int i, ix; | |
8875 | ||
8876 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8877 | return; | |
8878 | ||
8879 | buf += strlen (buf); | |
8880 | ||
8881 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8882 | buf += strlen (buf); | |
8883 | ||
8884 | /* Concatenate all the agent expressions that are commands into the | |
8885 | cmds parameter. */ | |
8886 | for (ix = 0; | |
8887 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8888 | ix++) | |
8889 | { | |
8890 | sprintf (buf, "X%x,", aexpr->len); | |
8891 | buf += strlen (buf); | |
8892 | for (i = 0; i < aexpr->len; ++i) | |
8893 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8894 | *buf = '\0'; | |
8895 | } | |
d3ce09f5 SS |
8896 | } |
8897 | ||
8181d85f DJ |
8898 | /* Insert a breakpoint. On targets that have software breakpoint |
8899 | support, we ask the remote target to do the work; on targets | |
8900 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8901 | |
8902 | static int | |
3db08215 MM |
8903 | remote_insert_breakpoint (struct target_ops *ops, |
8904 | struct gdbarch *gdbarch, | |
a6d9a66e | 8905 | struct bp_target_info *bp_tgt) |
c906108c | 8906 | { |
d471ea57 AC |
8907 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8908 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8909 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8910 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8911 | |
4082afcc | 8912 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8913 | { |
0d5ed153 | 8914 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8915 | struct remote_state *rs; |
bba74b36 | 8916 | char *p, *endbuf; |
7c0f6dcc | 8917 | int bpsize; |
b775012e | 8918 | struct condition_list *cond = NULL; |
4fff2411 | 8919 | |
28439a30 PA |
8920 | /* Make sure the remote is pointing at the right process, if |
8921 | necessary. */ | |
8922 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8923 | set_general_process (); | |
8924 | ||
a1dcb23a | 8925 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8926 | |
8927 | rs = get_remote_state (); | |
8928 | p = rs->buf; | |
bba74b36 | 8929 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8930 | |
96baa820 JM |
8931 | *(p++) = 'Z'; |
8932 | *(p++) = '0'; | |
8933 | *(p++) = ','; | |
7c0f6dcc | 8934 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8935 | p += hexnumstr (p, addr); |
bba74b36 | 8936 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8937 | |
efcc2da7 | 8938 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8939 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8940 | |
78eff0ec | 8941 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8942 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8943 | ||
6d820c5c DJ |
8944 | putpkt (rs->buf); |
8945 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8946 | |
6d820c5c | 8947 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8948 | { |
d471ea57 AC |
8949 | case PACKET_ERROR: |
8950 | return -1; | |
8951 | case PACKET_OK: | |
7c0f6dcc JL |
8952 | bp_tgt->placed_address = addr; |
8953 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8954 | return 0; |
8955 | case PACKET_UNKNOWN: | |
8956 | break; | |
96baa820 JM |
8957 | } |
8958 | } | |
c906108c | 8959 | |
0000e5cc PA |
8960 | /* If this breakpoint has target-side commands but this stub doesn't |
8961 | support Z0 packets, throw error. */ | |
8962 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8963 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8964 | Target doesn't support breakpoints that have target side commands.")); | |
8965 | ||
3db08215 | 8966 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8967 | } |
8968 | ||
8969 | static int | |
3db08215 MM |
8970 | remote_remove_breakpoint (struct target_ops *ops, |
8971 | struct gdbarch *gdbarch, | |
a6d9a66e | 8972 | struct bp_target_info *bp_tgt) |
c906108c | 8973 | { |
8181d85f | 8974 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8975 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8976 | |
4082afcc | 8977 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8978 | { |
6d820c5c | 8979 | char *p = rs->buf; |
bba74b36 | 8980 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8981 | |
28439a30 PA |
8982 | /* Make sure the remote is pointing at the right process, if |
8983 | necessary. */ | |
8984 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8985 | set_general_process (); | |
8986 | ||
96baa820 JM |
8987 | *(p++) = 'z'; |
8988 | *(p++) = '0'; | |
8989 | *(p++) = ','; | |
8990 | ||
8181d85f DJ |
8991 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8992 | p += hexnumstr (p, addr); | |
bba74b36 | 8993 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8994 | |
6d820c5c DJ |
8995 | putpkt (rs->buf); |
8996 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8997 | |
6d820c5c | 8998 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8999 | } |
9000 | ||
3db08215 | 9001 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9002 | } |
9003 | ||
f486487f | 9004 | static enum Z_packet_type |
d471ea57 AC |
9005 | watchpoint_to_Z_packet (int type) |
9006 | { | |
9007 | switch (type) | |
9008 | { | |
9009 | case hw_write: | |
bb858e6a | 9010 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9011 | break; |
9012 | case hw_read: | |
bb858e6a | 9013 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9014 | break; |
9015 | case hw_access: | |
bb858e6a | 9016 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9017 | break; |
9018 | default: | |
8e65ff28 | 9019 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9020 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9021 | } |
9022 | } | |
9023 | ||
3c3bea1c | 9024 | static int |
f486487f SM |
9025 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9026 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9027 | { |
d01949b6 | 9028 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9029 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9030 | char *p; |
d471ea57 | 9031 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9032 | |
4082afcc | 9033 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 9034 | return 1; |
802188a7 | 9035 | |
28439a30 PA |
9036 | /* Make sure the remote is pointing at the right process, if |
9037 | necessary. */ | |
9038 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9039 | set_general_process (); | |
9040 | ||
bba74b36 | 9041 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 9042 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9043 | addr = remote_address_masked (addr); |
9044 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9045 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 9046 | |
6d820c5c DJ |
9047 | putpkt (rs->buf); |
9048 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9049 | |
6d820c5c | 9050 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9051 | { |
9052 | case PACKET_ERROR: | |
d471ea57 | 9053 | return -1; |
85d721b8 PA |
9054 | case PACKET_UNKNOWN: |
9055 | return 1; | |
d471ea57 AC |
9056 | case PACKET_OK: |
9057 | return 0; | |
9058 | } | |
8e65ff28 | 9059 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9060 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9061 | } |
9062 | ||
283002cf MR |
9063 | static int |
9064 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9065 | CORE_ADDR start, int length) | |
9066 | { | |
9067 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9068 | ||
9069 | return diff < length; | |
9070 | } | |
9071 | ||
d471ea57 | 9072 | |
3c3bea1c | 9073 | static int |
f486487f SM |
9074 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9075 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9076 | { |
d01949b6 | 9077 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9078 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9079 | char *p; |
d471ea57 AC |
9080 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9081 | ||
4082afcc | 9082 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9083 | return -1; |
802188a7 | 9084 | |
28439a30 PA |
9085 | /* Make sure the remote is pointing at the right process, if |
9086 | necessary. */ | |
9087 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9088 | set_general_process (); | |
9089 | ||
bba74b36 | 9090 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9091 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9092 | addr = remote_address_masked (addr); |
9093 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9094 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9095 | putpkt (rs->buf); |
9096 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9097 | |
6d820c5c | 9098 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9099 | { |
9100 | case PACKET_ERROR: | |
9101 | case PACKET_UNKNOWN: | |
9102 | return -1; | |
9103 | case PACKET_OK: | |
9104 | return 0; | |
9105 | } | |
8e65ff28 | 9106 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9107 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9108 | } |
9109 | ||
3c3bea1c | 9110 | |
501eef12 | 9111 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9112 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9113 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9114 | |
480a3f21 | 9115 | static int |
31568a15 TT |
9116 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9117 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9118 | { |
9119 | if (remote_hw_watchpoint_length_limit == 0) | |
9120 | return 0; | |
9121 | else if (remote_hw_watchpoint_length_limit < 0) | |
9122 | return 1; | |
9123 | else if (len <= remote_hw_watchpoint_length_limit) | |
9124 | return 1; | |
9125 | else | |
9126 | return 0; | |
9127 | } | |
9128 | ||
b9362cc7 | 9129 | static int |
5461485a | 9130 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9131 | enum bptype type, int cnt, int ot) |
96baa820 | 9132 | { |
3c3bea1c GS |
9133 | if (type == bp_hardware_breakpoint) |
9134 | { | |
9135 | if (remote_hw_breakpoint_limit == 0) | |
9136 | return 0; | |
501eef12 AC |
9137 | else if (remote_hw_breakpoint_limit < 0) |
9138 | return 1; | |
3c3bea1c GS |
9139 | else if (cnt <= remote_hw_breakpoint_limit) |
9140 | return 1; | |
9141 | } | |
9142 | else | |
9143 | { | |
9144 | if (remote_hw_watchpoint_limit == 0) | |
9145 | return 0; | |
501eef12 AC |
9146 | else if (remote_hw_watchpoint_limit < 0) |
9147 | return 1; | |
3c3bea1c GS |
9148 | else if (ot) |
9149 | return -1; | |
9150 | else if (cnt <= remote_hw_watchpoint_limit) | |
9151 | return 1; | |
9152 | } | |
9153 | return -1; | |
9154 | } | |
9155 | ||
f7e6eed5 PA |
9156 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9157 | ||
9158 | static int | |
9159 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9160 | { | |
9161 | struct remote_state *rs = get_remote_state (); | |
9162 | ||
9163 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
9164 | } | |
9165 | ||
9166 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9167 | remote. */ | |
9168 | ||
9169 | static int | |
9170 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9171 | { | |
9172 | struct remote_state *rs = get_remote_state (); | |
9173 | ||
9174 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
9175 | } | |
9176 | ||
9177 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9178 | ||
9179 | static int | |
9180 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9181 | { | |
9182 | struct remote_state *rs = get_remote_state (); | |
9183 | ||
9184 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
9185 | } | |
9186 | ||
9187 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9188 | remote. */ | |
9189 | ||
9190 | static int | |
9191 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9192 | { | |
9193 | struct remote_state *rs = get_remote_state (); | |
9194 | ||
9195 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
9196 | } | |
9197 | ||
b9362cc7 | 9198 | static int |
6a109b6b | 9199 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9200 | { |
ee154bee TT |
9201 | struct remote_state *rs = get_remote_state (); |
9202 | ||
f7e6eed5 | 9203 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
9204 | } |
9205 | ||
4aa7a7f5 JJ |
9206 | static int |
9207 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9208 | { |
ee154bee | 9209 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 9210 | int rc = 0; |
a744cf53 | 9211 | |
6a109b6b | 9212 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 9213 | { |
ee154bee | 9214 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
9215 | rc = 1; |
9216 | } | |
9217 | ||
9218 | return rc; | |
3c3bea1c GS |
9219 | } |
9220 | ||
9221 | ||
9222 | static int | |
23a26771 | 9223 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9224 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9225 | { |
0d5ed153 | 9226 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9227 | struct remote_state *rs; |
bba74b36 | 9228 | char *p, *endbuf; |
dd61ec5c | 9229 | char *message; |
0d5ed153 | 9230 | int bpsize; |
802188a7 | 9231 | |
c8189ed1 | 9232 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9233 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9234 | |
0d5ed153 | 9235 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9236 | |
4082afcc | 9237 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9238 | return -1; |
2bc416ba | 9239 | |
28439a30 PA |
9240 | /* Make sure the remote is pointing at the right process, if |
9241 | necessary. */ | |
9242 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9243 | set_general_process (); | |
9244 | ||
4fff2411 JZ |
9245 | rs = get_remote_state (); |
9246 | p = rs->buf; | |
bba74b36 | 9247 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9248 | |
96baa820 JM |
9249 | *(p++) = 'Z'; |
9250 | *(p++) = '1'; | |
9251 | *(p++) = ','; | |
802188a7 | 9252 | |
0d5ed153 | 9253 | addr = remote_address_masked (addr); |
96baa820 | 9254 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9255 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9256 | |
efcc2da7 | 9257 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9258 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9259 | |
78eff0ec | 9260 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9261 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9262 | ||
6d820c5c DJ |
9263 | putpkt (rs->buf); |
9264 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9265 | |
6d820c5c | 9266 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9267 | { |
9268 | case PACKET_ERROR: | |
dd61ec5c MW |
9269 | if (rs->buf[1] == '.') |
9270 | { | |
9271 | message = strchr (rs->buf + 2, '.'); | |
9272 | if (message) | |
0316657e | 9273 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9274 | } |
9275 | return -1; | |
d471ea57 AC |
9276 | case PACKET_UNKNOWN: |
9277 | return -1; | |
9278 | case PACKET_OK: | |
0d5ed153 MR |
9279 | bp_tgt->placed_address = addr; |
9280 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9281 | return 0; |
9282 | } | |
8e65ff28 | 9283 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9284 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9285 | } |
9286 | ||
d471ea57 | 9287 | |
802188a7 | 9288 | static int |
a64dc96c | 9289 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9290 | struct bp_target_info *bp_tgt) |
96baa820 | 9291 | { |
8181d85f | 9292 | CORE_ADDR addr; |
d01949b6 | 9293 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9294 | char *p = rs->buf; |
bba74b36 | 9295 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9296 | |
4082afcc | 9297 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9298 | return -1; |
802188a7 | 9299 | |
28439a30 PA |
9300 | /* Make sure the remote is pointing at the right process, if |
9301 | necessary. */ | |
9302 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9303 | set_general_process (); | |
9304 | ||
96baa820 JM |
9305 | *(p++) = 'z'; |
9306 | *(p++) = '1'; | |
9307 | *(p++) = ','; | |
802188a7 | 9308 | |
8181d85f | 9309 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9310 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9311 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9312 | |
6d820c5c DJ |
9313 | putpkt (rs->buf); |
9314 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9315 | |
6d820c5c | 9316 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9317 | { |
9318 | case PACKET_ERROR: | |
9319 | case PACKET_UNKNOWN: | |
9320 | return -1; | |
9321 | case PACKET_OK: | |
9322 | return 0; | |
9323 | } | |
8e65ff28 | 9324 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9325 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9326 | } |
96baa820 | 9327 | |
4a5e7a5b PA |
9328 | /* Verify memory using the "qCRC:" request. */ |
9329 | ||
9330 | static int | |
9331 | remote_verify_memory (struct target_ops *ops, | |
9332 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9333 | { | |
9334 | struct remote_state *rs = get_remote_state (); | |
9335 | unsigned long host_crc, target_crc; | |
9336 | char *tmp; | |
9337 | ||
936d2992 PA |
9338 | /* It doesn't make sense to use qCRC if the remote target is |
9339 | connected but not running. */ | |
9340 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9341 | { | |
9342 | enum packet_result result; | |
28439a30 | 9343 | |
936d2992 PA |
9344 | /* Make sure the remote is pointing at the right process. */ |
9345 | set_general_process (); | |
4a5e7a5b | 9346 | |
936d2992 PA |
9347 | /* FIXME: assumes lma can fit into long. */ |
9348 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9349 | (long) lma, (long) size); | |
9350 | putpkt (rs->buf); | |
4a5e7a5b | 9351 | |
936d2992 PA |
9352 | /* Be clever; compute the host_crc before waiting for target |
9353 | reply. */ | |
9354 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9355 | ||
9356 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9357 | |
936d2992 PA |
9358 | result = packet_ok (rs->buf, |
9359 | &remote_protocol_packets[PACKET_qCRC]); | |
9360 | if (result == PACKET_ERROR) | |
9361 | return -1; | |
9362 | else if (result == PACKET_OK) | |
9363 | { | |
9364 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9365 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9366 | |
936d2992 PA |
9367 | return (host_crc == target_crc); |
9368 | } | |
9369 | } | |
4a5e7a5b | 9370 | |
936d2992 | 9371 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9372 | } |
9373 | ||
c906108c SS |
9374 | /* compare-sections command |
9375 | ||
9376 | With no arguments, compares each loadable section in the exec bfd | |
9377 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9378 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9379 | |
c906108c | 9380 | static void |
fba45db2 | 9381 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9382 | { |
9383 | asection *s; | |
c906108c | 9384 | struct cleanup *old_chain; |
948f8e3d | 9385 | gdb_byte *sectdata; |
ce359b09 | 9386 | const char *sectname; |
c906108c SS |
9387 | bfd_size_type size; |
9388 | bfd_vma lma; | |
9389 | int matched = 0; | |
9390 | int mismatched = 0; | |
4a5e7a5b | 9391 | int res; |
95cf3b38 | 9392 | int read_only = 0; |
c906108c SS |
9393 | |
9394 | if (!exec_bfd) | |
8a3fe4f8 | 9395 | error (_("command cannot be used without an exec file")); |
c906108c | 9396 | |
28439a30 PA |
9397 | /* Make sure the remote is pointing at the right process. */ |
9398 | set_general_process (); | |
9399 | ||
95cf3b38 DT |
9400 | if (args != NULL && strcmp (args, "-r") == 0) |
9401 | { | |
9402 | read_only = 1; | |
9403 | args = NULL; | |
9404 | } | |
9405 | ||
c5aa993b | 9406 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9407 | { |
9408 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9409 | continue; /* Skip non-loadable section. */ |
c906108c | 9410 | |
95cf3b38 DT |
9411 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9412 | continue; /* Skip writeable sections */ | |
9413 | ||
2c500098 | 9414 | size = bfd_get_section_size (s); |
c906108c | 9415 | if (size == 0) |
0df8b418 | 9416 | continue; /* Skip zero-length section. */ |
c906108c | 9417 | |
ce359b09 | 9418 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9419 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9420 | continue; /* Not the section selected by user. */ |
c906108c | 9421 | |
0df8b418 | 9422 | matched = 1; /* Do this section. */ |
c906108c | 9423 | lma = s->lma; |
c906108c | 9424 | |
c906108c | 9425 | sectdata = xmalloc (size); |
b8c9b27d | 9426 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9427 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9428 | |
4a5e7a5b PA |
9429 | res = target_verify_memory (sectdata, lma, size); |
9430 | ||
9431 | if (res == -1) | |
5af949e3 | 9432 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9433 | paddress (target_gdbarch (), lma), |
9434 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9435 | |
5af949e3 | 9436 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9437 | paddress (target_gdbarch (), lma), |
9438 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9439 | if (res) |
c906108c SS |
9440 | printf_filtered ("matched.\n"); |
9441 | else | |
c5aa993b JM |
9442 | { |
9443 | printf_filtered ("MIS-MATCHED!\n"); | |
9444 | mismatched++; | |
9445 | } | |
c906108c SS |
9446 | |
9447 | do_cleanups (old_chain); | |
9448 | } | |
9449 | if (mismatched > 0) | |
936d2992 | 9450 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9451 | the loaded file\n")); |
c906108c | 9452 | if (args && !matched) |
a3f17187 | 9453 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9454 | } |
9455 | ||
0e7f50da UW |
9456 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9457 | into remote target. The number of bytes written to the remote | |
9458 | target is returned, or -1 for error. */ | |
9459 | ||
9b409511 | 9460 | static enum target_xfer_status |
0e7f50da UW |
9461 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9462 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9463 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9464 | struct packet_config *packet) |
9465 | { | |
9466 | int i, buf_len; | |
9467 | ULONGEST n; | |
0e7f50da UW |
9468 | struct remote_state *rs = get_remote_state (); |
9469 | int max_size = get_memory_write_packet_size (); | |
9470 | ||
9471 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9472 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9473 | |
9474 | /* Insert header. */ | |
9475 | i = snprintf (rs->buf, max_size, | |
9476 | "qXfer:%s:write:%s:%s:", | |
9477 | object_name, annex ? annex : "", | |
9478 | phex_nz (offset, sizeof offset)); | |
9479 | max_size -= (i + 1); | |
9480 | ||
9481 | /* Escape as much data as fits into rs->buf. */ | |
9482 | buf_len = remote_escape_output | |
124e13d9 | 9483 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9484 | |
9485 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9486 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9487 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9488 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9489 | |
9490 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9491 | |
9492 | *xfered_len = n; | |
9493 | return TARGET_XFER_OK; | |
0e7f50da UW |
9494 | } |
9495 | ||
0876f84a DJ |
9496 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9497 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9498 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9499 | The number of bytes read may be less than LEN without indicating an | |
9500 | EOF. PACKET is checked and updated to indicate whether the remote | |
9501 | target supports this object. */ | |
9502 | ||
9b409511 | 9503 | static enum target_xfer_status |
0876f84a DJ |
9504 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9505 | const char *annex, | |
9506 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9507 | ULONGEST *xfered_len, |
0876f84a DJ |
9508 | struct packet_config *packet) |
9509 | { | |
0876f84a | 9510 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9511 | LONGEST i, n, packet_len; |
9512 | ||
9513 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9514 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9515 | |
9516 | /* Check whether we've cached an end-of-object packet that matches | |
9517 | this request. */ | |
8e88304f | 9518 | if (rs->finished_object) |
0876f84a | 9519 | { |
8e88304f TT |
9520 | if (strcmp (object_name, rs->finished_object) == 0 |
9521 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9522 | && offset == rs->finished_offset) | |
9b409511 YQ |
9523 | return TARGET_XFER_EOF; |
9524 | ||
0876f84a DJ |
9525 | |
9526 | /* Otherwise, we're now reading something different. Discard | |
9527 | the cache. */ | |
8e88304f TT |
9528 | xfree (rs->finished_object); |
9529 | xfree (rs->finished_annex); | |
9530 | rs->finished_object = NULL; | |
9531 | rs->finished_annex = NULL; | |
0876f84a DJ |
9532 | } |
9533 | ||
9534 | /* Request only enough to fit in a single packet. The actual data | |
9535 | may not, since we don't know how much of it will need to be escaped; | |
9536 | the target is free to respond with slightly less data. We subtract | |
9537 | five to account for the response type and the protocol frame. */ | |
9538 | n = min (get_remote_packet_size () - 5, len); | |
9539 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9540 | object_name, annex ? annex : "", | |
9541 | phex_nz (offset, sizeof offset), | |
9542 | phex_nz (n, sizeof n)); | |
9543 | i = putpkt (rs->buf); | |
9544 | if (i < 0) | |
2ed4b548 | 9545 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9546 | |
9547 | rs->buf[0] = '\0'; | |
9548 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9549 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9550 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9551 | |
9552 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9553 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9554 | ||
9555 | /* 'm' means there is (or at least might be) more data after this | |
9556 | batch. That does not make sense unless there's at least one byte | |
9557 | of data in this reply. */ | |
9558 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9559 | error (_("Remote qXfer reply contained no data.")); | |
9560 | ||
9561 | /* Got some data. */ | |
bc20a4af PA |
9562 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9563 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9564 | |
9565 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9566 | or possibly empty. If we have the final block of a non-empty |
9567 | object, record this fact to bypass a subsequent partial read. */ | |
9568 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9569 | { |
8e88304f TT |
9570 | rs->finished_object = xstrdup (object_name); |
9571 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9572 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9573 | } |
9574 | ||
9b409511 YQ |
9575 | if (i == 0) |
9576 | return TARGET_XFER_EOF; | |
9577 | else | |
9578 | { | |
9579 | *xfered_len = i; | |
9580 | return TARGET_XFER_OK; | |
9581 | } | |
0876f84a DJ |
9582 | } |
9583 | ||
9b409511 | 9584 | static enum target_xfer_status |
4b8a223f | 9585 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9586 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9587 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9588 | ULONGEST *xfered_len) | |
c906108c | 9589 | { |
82f73884 | 9590 | struct remote_state *rs; |
c906108c | 9591 | int i; |
6d820c5c | 9592 | char *p2; |
1e3ff5ad | 9593 | char query_type; |
124e13d9 | 9594 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9595 | |
e6e4e701 | 9596 | set_remote_traceframe (); |
82f73884 PA |
9597 | set_general_thread (inferior_ptid); |
9598 | ||
9599 | rs = get_remote_state (); | |
9600 | ||
b2182ed2 | 9601 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9602 | if (object == TARGET_OBJECT_MEMORY) |
9603 | { | |
2d717e4f DJ |
9604 | /* If the remote target is connected but not running, we should |
9605 | pass this request down to a lower stratum (e.g. the executable | |
9606 | file). */ | |
9607 | if (!target_has_execution) | |
9b409511 | 9608 | return TARGET_XFER_EOF; |
2d717e4f | 9609 | |
21e3b9b9 | 9610 | if (writebuf != NULL) |
124e13d9 SM |
9611 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9612 | xfered_len); | |
21e3b9b9 | 9613 | else |
124e13d9 SM |
9614 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9615 | xfered_len); | |
21e3b9b9 DJ |
9616 | } |
9617 | ||
0df8b418 | 9618 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9619 | if (object == TARGET_OBJECT_SPU) |
9620 | { | |
9621 | if (readbuf) | |
9622 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9623 | xfered_len, &remote_protocol_packets |
9624 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9625 | else |
9626 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9627 | xfered_len, &remote_protocol_packets |
9628 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9629 | } |
9630 | ||
4aa995e1 PA |
9631 | /* Handle extra signal info using qxfer packets. */ |
9632 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9633 | { | |
9634 | if (readbuf) | |
9635 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9636 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9637 | [PACKET_qXfer_siginfo_read]); |
9638 | else | |
3e43a32a | 9639 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9640 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9641 | &remote_protocol_packets |
9642 | [PACKET_qXfer_siginfo_write]); | |
9643 | } | |
9644 | ||
0fb4aa4b PA |
9645 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9646 | { | |
9647 | if (readbuf) | |
3e43a32a | 9648 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9649 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9650 | &remote_protocol_packets |
9651 | [PACKET_qXfer_statictrace_read]); | |
9652 | else | |
2ed4b548 | 9653 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9654 | } |
9655 | ||
a76d924d DJ |
9656 | /* Only handle flash writes. */ |
9657 | if (writebuf != NULL) | |
9658 | { | |
9659 | LONGEST xfered; | |
9660 | ||
9661 | switch (object) | |
9662 | { | |
9663 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9664 | return remote_flash_write (ops, offset, len, xfered_len, |
9665 | writebuf); | |
a76d924d DJ |
9666 | |
9667 | default: | |
2ed4b548 | 9668 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9669 | } |
9670 | } | |
4b8a223f | 9671 | |
1e3ff5ad AC |
9672 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9673 | objects!!! Instead specify new query packets. */ | |
9674 | switch (object) | |
c906108c | 9675 | { |
1e3ff5ad AC |
9676 | case TARGET_OBJECT_AVR: |
9677 | query_type = 'R'; | |
9678 | break; | |
802188a7 RM |
9679 | |
9680 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9681 | gdb_assert (annex == NULL); |
9682 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9683 | xfered_len, |
0876f84a | 9684 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9685 | |
23181151 DJ |
9686 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9687 | return remote_read_qxfer | |
9b409511 | 9688 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9689 | &remote_protocol_packets[PACKET_qXfer_features]); |
9690 | ||
cfa9d6d9 DJ |
9691 | case TARGET_OBJECT_LIBRARIES: |
9692 | return remote_read_qxfer | |
9b409511 | 9693 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9694 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9695 | ||
2268b414 JK |
9696 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9697 | return remote_read_qxfer | |
9b409511 | 9698 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9699 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9700 | ||
fd79ecee DJ |
9701 | case TARGET_OBJECT_MEMORY_MAP: |
9702 | gdb_assert (annex == NULL); | |
9703 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9704 | xfered_len, |
fd79ecee DJ |
9705 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9706 | ||
07e059b5 VP |
9707 | case TARGET_OBJECT_OSDATA: |
9708 | /* Should only get here if we're connected. */ | |
5d93a237 | 9709 | gdb_assert (rs->remote_desc); |
07e059b5 | 9710 | return remote_read_qxfer |
9b409511 | 9711 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9712 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9713 | ||
dc146f7c VP |
9714 | case TARGET_OBJECT_THREADS: |
9715 | gdb_assert (annex == NULL); | |
9716 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9717 | xfered_len, |
dc146f7c VP |
9718 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9719 | ||
b3b9301e PA |
9720 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9721 | gdb_assert (annex == NULL); | |
9722 | return remote_read_qxfer | |
9b409511 | 9723 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9724 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9725 | |
9726 | case TARGET_OBJECT_FDPIC: | |
9727 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9728 | xfered_len, |
78d85199 | 9729 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9730 | |
9731 | case TARGET_OBJECT_OPENVMS_UIB: | |
9732 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9733 | xfered_len, |
169081d0 TG |
9734 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9735 | ||
9accd112 MM |
9736 | case TARGET_OBJECT_BTRACE: |
9737 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9738 | xfered_len, |
9accd112 MM |
9739 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9740 | ||
f4abbc16 MM |
9741 | case TARGET_OBJECT_BTRACE_CONF: |
9742 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9743 | len, xfered_len, | |
9744 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9745 | ||
c78fa86a GB |
9746 | case TARGET_OBJECT_EXEC_FILE: |
9747 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9748 | len, xfered_len, | |
9749 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9750 | ||
1e3ff5ad | 9751 | default: |
2ed4b548 | 9752 | return TARGET_XFER_E_IO; |
c906108c SS |
9753 | } |
9754 | ||
0df8b418 | 9755 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9756 | large enough let the caller deal with it. */ |
ea9c271d | 9757 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9758 | return TARGET_XFER_E_IO; |
ea9c271d | 9759 | len = get_remote_packet_size (); |
1e3ff5ad | 9760 | |
23860348 | 9761 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9762 | if (!rs->remote_desc) |
8a3fe4f8 | 9763 | error (_("remote query is only available after target open")); |
c906108c | 9764 | |
1e3ff5ad | 9765 | gdb_assert (annex != NULL); |
4b8a223f | 9766 | gdb_assert (readbuf != NULL); |
c906108c | 9767 | |
6d820c5c | 9768 | p2 = rs->buf; |
c906108c SS |
9769 | *p2++ = 'q'; |
9770 | *p2++ = query_type; | |
9771 | ||
23860348 MS |
9772 | /* We used one buffer char for the remote protocol q command and |
9773 | another for the query type. As the remote protocol encapsulation | |
9774 | uses 4 chars plus one extra in case we are debugging | |
9775 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9776 | string. */ | |
c906108c | 9777 | i = 0; |
ea9c271d | 9778 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9779 | { |
1e3ff5ad AC |
9780 | /* Bad caller may have sent forbidden characters. */ |
9781 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9782 | *p2++ = annex[i]; | |
c906108c SS |
9783 | i++; |
9784 | } | |
1e3ff5ad AC |
9785 | *p2 = '\0'; |
9786 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9787 | |
6d820c5c | 9788 | i = putpkt (rs->buf); |
c5aa993b | 9789 | if (i < 0) |
2ed4b548 | 9790 | return TARGET_XFER_E_IO; |
c906108c | 9791 | |
6d820c5c DJ |
9792 | getpkt (&rs->buf, &rs->buf_size, 0); |
9793 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9794 | |
9b409511 YQ |
9795 | *xfered_len = strlen ((char *) readbuf); |
9796 | return TARGET_XFER_OK; | |
c906108c SS |
9797 | } |
9798 | ||
08388c79 DE |
9799 | static int |
9800 | remote_search_memory (struct target_ops* ops, | |
9801 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9802 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9803 | CORE_ADDR *found_addrp) | |
9804 | { | |
f5656ead | 9805 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9806 | struct remote_state *rs = get_remote_state (); |
9807 | int max_size = get_memory_write_packet_size (); | |
9808 | struct packet_config *packet = | |
9809 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9810 | /* Number of packet bytes used to encode the pattern; |
9811 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9812 | int escaped_pattern_len; |
0df8b418 | 9813 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9814 | int used_pattern_len; |
9815 | int i; | |
9816 | int found; | |
9817 | ULONGEST found_addr; | |
9818 | ||
9819 | /* Don't go to the target if we don't have to. | |
9820 | This is done before checking packet->support to avoid the possibility that | |
9821 | a success for this edge case means the facility works in general. */ | |
9822 | if (pattern_len > search_space_len) | |
9823 | return 0; | |
9824 | if (pattern_len == 0) | |
9825 | { | |
9826 | *found_addrp = start_addr; | |
9827 | return 1; | |
9828 | } | |
9829 | ||
9830 | /* If we already know the packet isn't supported, fall back to the simple | |
9831 | way of searching memory. */ | |
9832 | ||
4082afcc | 9833 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9834 | { |
9835 | /* Target doesn't provided special support, fall back and use the | |
9836 | standard support (copy memory and do the search here). */ | |
9837 | return simple_search_memory (ops, start_addr, search_space_len, | |
9838 | pattern, pattern_len, found_addrp); | |
9839 | } | |
9840 | ||
28439a30 PA |
9841 | /* Make sure the remote is pointing at the right process. */ |
9842 | set_general_process (); | |
9843 | ||
08388c79 DE |
9844 | /* Insert header. */ |
9845 | i = snprintf (rs->buf, max_size, | |
9846 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9847 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9848 | phex_nz (search_space_len, sizeof (search_space_len))); |
9849 | max_size -= (i + 1); | |
9850 | ||
9851 | /* Escape as much data as fits into rs->buf. */ | |
9852 | escaped_pattern_len = | |
124e13d9 | 9853 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9854 | &used_pattern_len, max_size); |
9855 | ||
9856 | /* Bail if the pattern is too large. */ | |
9857 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9858 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9859 | |
9860 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9861 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9862 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9863 | { | |
9864 | /* The request may not have worked because the command is not | |
9865 | supported. If so, fall back to the simple way. */ | |
9866 | if (packet->support == PACKET_DISABLE) | |
9867 | { | |
9868 | return simple_search_memory (ops, start_addr, search_space_len, | |
9869 | pattern, pattern_len, found_addrp); | |
9870 | } | |
9871 | return -1; | |
9872 | } | |
9873 | ||
9874 | if (rs->buf[0] == '0') | |
9875 | found = 0; | |
9876 | else if (rs->buf[0] == '1') | |
9877 | { | |
9878 | found = 1; | |
9879 | if (rs->buf[1] != ',') | |
10e0fa18 | 9880 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9881 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9882 | *found_addrp = found_addr; | |
9883 | } | |
9884 | else | |
10e0fa18 | 9885 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9886 | |
9887 | return found; | |
9888 | } | |
9889 | ||
96baa820 | 9890 | static void |
a30bf1f1 | 9891 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9892 | struct ui_file *outbuf) |
96baa820 | 9893 | { |
d01949b6 | 9894 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9895 | char *p = rs->buf; |
96baa820 | 9896 | |
5d93a237 | 9897 | if (!rs->remote_desc) |
8a3fe4f8 | 9898 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9899 | |
23860348 | 9900 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9901 | if (command == NULL) |
9902 | command = ""; | |
9903 | ||
23860348 | 9904 | /* The query prefix. */ |
2e9f7625 DJ |
9905 | strcpy (rs->buf, "qRcmd,"); |
9906 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9907 | |
3e43a32a MS |
9908 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9909 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9910 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9911 | |
23860348 | 9912 | /* Encode the actual command. */ |
a30bf1f1 | 9913 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9914 | |
6d820c5c | 9915 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9916 | error (_("Communication problem with target.")); |
96baa820 JM |
9917 | |
9918 | /* get/display the response */ | |
9919 | while (1) | |
9920 | { | |
2e9f7625 DJ |
9921 | char *buf; |
9922 | ||
00bf0b85 | 9923 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9924 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9925 | rs->buf[0] = '\0'; |
5b37825d PW |
9926 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9927 | { | |
9928 | /* Timeout. Continue to (try to) read responses. | |
9929 | This is better than stopping with an error, assuming the stub | |
9930 | is still executing the (long) monitor command. | |
9931 | If needed, the user can interrupt gdb using C-c, obtaining | |
9932 | an effect similar to stop on timeout. */ | |
9933 | continue; | |
9934 | } | |
2e9f7625 | 9935 | buf = rs->buf; |
96baa820 | 9936 | if (buf[0] == '\0') |
8a3fe4f8 | 9937 | error (_("Target does not support this command.")); |
96baa820 JM |
9938 | if (buf[0] == 'O' && buf[1] != 'K') |
9939 | { | |
23860348 | 9940 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9941 | continue; |
9942 | } | |
9943 | if (strcmp (buf, "OK") == 0) | |
9944 | break; | |
7be570e7 JM |
9945 | if (strlen (buf) == 3 && buf[0] == 'E' |
9946 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9947 | { | |
8a3fe4f8 | 9948 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9949 | } |
96baa820 JM |
9950 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9951 | { | |
9952 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9953 | |
96baa820 JM |
9954 | fputc_unfiltered (c, outbuf); |
9955 | } | |
9956 | break; | |
9957 | } | |
9958 | } | |
9959 | ||
fd79ecee DJ |
9960 | static VEC(mem_region_s) * |
9961 | remote_memory_map (struct target_ops *ops) | |
9962 | { | |
9963 | VEC(mem_region_s) *result = NULL; | |
9964 | char *text = target_read_stralloc (¤t_target, | |
9965 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9966 | ||
9967 | if (text) | |
9968 | { | |
9969 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9970 | |
fd79ecee DJ |
9971 | result = parse_memory_map (text); |
9972 | do_cleanups (back_to); | |
9973 | } | |
9974 | ||
9975 | return result; | |
9976 | } | |
9977 | ||
c906108c | 9978 | static void |
fba45db2 | 9979 | packet_command (char *args, int from_tty) |
c906108c | 9980 | { |
d01949b6 | 9981 | struct remote_state *rs = get_remote_state (); |
c906108c | 9982 | |
5d93a237 | 9983 | if (!rs->remote_desc) |
8a3fe4f8 | 9984 | error (_("command can only be used with remote target")); |
c906108c | 9985 | |
c5aa993b | 9986 | if (!args) |
8a3fe4f8 | 9987 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9988 | |
9989 | puts_filtered ("sending: "); | |
9990 | print_packet (args); | |
9991 | puts_filtered ("\n"); | |
9992 | putpkt (args); | |
9993 | ||
6d820c5c | 9994 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9995 | puts_filtered ("received: "); |
6d820c5c | 9996 | print_packet (rs->buf); |
c906108c SS |
9997 | puts_filtered ("\n"); |
9998 | } | |
9999 | ||
10000 | #if 0 | |
23860348 | 10001 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10002 | |
a14ed312 | 10003 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10004 | |
a14ed312 | 10005 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10006 | |
a14ed312 | 10007 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10008 | |
a14ed312 | 10009 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10010 | |
23860348 | 10011 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10012 | |
a14ed312 | 10013 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10014 | |
23860348 | 10015 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10016 | |
a14ed312 | 10017 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10018 | |
a14ed312 | 10019 | static void init_remote_threadtests (void); |
c906108c | 10020 | |
23860348 | 10021 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10022 | |
10023 | static void | |
fba45db2 | 10024 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10025 | { |
10026 | int sample_thread = SAMPLE_THREAD; | |
10027 | ||
a3f17187 | 10028 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10029 | set_general_thread (sample_thread); |
c906108c SS |
10030 | } |
10031 | ||
10032 | ||
10033 | static void | |
fba45db2 | 10034 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10035 | { |
10036 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10037 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10038 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10039 | |
79d7f229 | 10040 | if (remote_thread_alive (ptid)) |
c906108c SS |
10041 | printf_filtered ("PASS: Thread alive test\n"); |
10042 | else | |
10043 | printf_filtered ("FAIL: Thread alive test\n"); | |
10044 | } | |
10045 | ||
23860348 | 10046 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10047 | |
10048 | void | |
fba45db2 | 10049 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10050 | { |
10051 | char hexid[20]; | |
10052 | ||
23860348 | 10053 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10054 | hexid[16] = 0; |
10055 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10056 | } | |
10057 | ||
10058 | static void | |
fba45db2 | 10059 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10060 | { |
10061 | int startflag = 1; | |
10062 | threadref nextthread; | |
10063 | int done, result_count; | |
10064 | threadref threadlist[3]; | |
10065 | ||
10066 | printf_filtered ("Remote Threadlist test\n"); | |
10067 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10068 | &result_count, &threadlist[0])) | |
10069 | printf_filtered ("FAIL: threadlist test\n"); | |
10070 | else | |
10071 | { | |
10072 | threadref *scan = threadlist; | |
10073 | threadref *limit = scan + result_count; | |
10074 | ||
10075 | while (scan < limit) | |
10076 | output_threadid (" thread ", scan++); | |
10077 | } | |
10078 | } | |
10079 | ||
10080 | void | |
fba45db2 | 10081 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10082 | { |
10083 | output_threadid ("Threadid: ", &info->threadid); | |
10084 | printf_filtered ("Name: %s\n ", info->shortname); | |
10085 | printf_filtered ("State: %s\n", info->display); | |
10086 | printf_filtered ("other: %s\n\n", info->more_display); | |
10087 | } | |
10088 | ||
10089 | int | |
fba45db2 | 10090 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10091 | { |
10092 | int result; | |
10093 | int set; | |
10094 | struct gdb_ext_thread_info threadinfo; | |
10095 | ||
10096 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10097 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10098 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10099 | display_thread_info (&threadinfo); | |
10100 | return result; | |
10101 | } | |
10102 | ||
10103 | static void | |
fba45db2 | 10104 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10105 | { |
10106 | int athread = SAMPLE_THREAD; | |
10107 | threadref thread; | |
10108 | int set; | |
10109 | ||
10110 | int_to_threadref (&thread, athread); | |
10111 | printf_filtered ("Remote Threadinfo test\n"); | |
10112 | if (!get_and_display_threadinfo (&thread)) | |
10113 | printf_filtered ("FAIL cannot get thread info\n"); | |
10114 | } | |
10115 | ||
10116 | static int | |
fba45db2 | 10117 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10118 | { |
10119 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10120 | return get_and_display_threadinfo (ref); | |
10121 | } | |
10122 | ||
10123 | static void | |
fba45db2 | 10124 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10125 | { |
10126 | printf_filtered ("Remote Threadlist update test\n"); | |
10127 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10128 | } | |
10129 | ||
10130 | static void | |
10131 | init_remote_threadtests (void) | |
10132 | { | |
3e43a32a MS |
10133 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10134 | _("Fetch and print the remote list of " | |
10135 | "thread identifiers, one pkt only")); | |
c906108c | 10136 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10137 | _("Fetch and display info about one thread")); |
c906108c | 10138 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10139 | _("Test setting to a different thread")); |
c906108c | 10140 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10141 | _("Iterate through updating all remote thread info")); |
c906108c | 10142 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10143 | _(" Remote thread alive test ")); |
c906108c SS |
10144 | } |
10145 | ||
10146 | #endif /* 0 */ | |
10147 | ||
f3fb8c85 MS |
10148 | /* Convert a thread ID to a string. Returns the string in a static |
10149 | buffer. */ | |
10150 | ||
10151 | static char * | |
117de6a9 | 10152 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10153 | { |
79d7f229 | 10154 | static char buf[64]; |
82f73884 | 10155 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10156 | |
7cee1e54 PA |
10157 | if (ptid_equal (ptid, null_ptid)) |
10158 | return normal_pid_to_str (ptid); | |
10159 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10160 | { |
10161 | /* Printing an inferior target id. */ | |
10162 | ||
10163 | /* When multi-process extensions are off, there's no way in the | |
10164 | remote protocol to know the remote process id, if there's any | |
10165 | at all. There's one exception --- when we're connected with | |
10166 | target extended-remote, and we manually attached to a process | |
10167 | with "attach PID". We don't record anywhere a flag that | |
10168 | allows us to distinguish that case from the case of | |
10169 | connecting with extended-remote and the stub already being | |
10170 | attached to a process, and reporting yes to qAttached, hence | |
10171 | no smart special casing here. */ | |
10172 | if (!remote_multi_process_p (rs)) | |
10173 | { | |
10174 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10175 | return buf; | |
10176 | } | |
10177 | ||
10178 | return normal_pid_to_str (ptid); | |
82f73884 | 10179 | } |
ecd0ada5 | 10180 | else |
79d7f229 | 10181 | { |
ecd0ada5 PA |
10182 | if (ptid_equal (magic_null_ptid, ptid)) |
10183 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 10184 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
10185 | if (ptid_get_lwp (ptid) == 0) |
10186 | return normal_pid_to_str (ptid); | |
10187 | else | |
10188 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10189 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10190 | else |
10191 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10192 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10193 | return buf; |
10194 | } | |
f3fb8c85 MS |
10195 | } |
10196 | ||
38691318 KB |
10197 | /* Get the address of the thread local variable in OBJFILE which is |
10198 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10199 | ||
10200 | static CORE_ADDR | |
117de6a9 PA |
10201 | remote_get_thread_local_address (struct target_ops *ops, |
10202 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10203 | { |
4082afcc | 10204 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10205 | { |
10206 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10207 | char *p = rs->buf; |
82f73884 | 10208 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10209 | enum packet_result result; |
38691318 KB |
10210 | |
10211 | strcpy (p, "qGetTLSAddr:"); | |
10212 | p += strlen (p); | |
82f73884 | 10213 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10214 | *p++ = ','; |
10215 | p += hexnumstr (p, offset); | |
10216 | *p++ = ','; | |
10217 | p += hexnumstr (p, lm); | |
10218 | *p++ = '\0'; | |
10219 | ||
6d820c5c DJ |
10220 | putpkt (rs->buf); |
10221 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10222 | result = packet_ok (rs->buf, |
10223 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10224 | if (result == PACKET_OK) |
38691318 KB |
10225 | { |
10226 | ULONGEST result; | |
10227 | ||
6d820c5c | 10228 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10229 | return result; |
10230 | } | |
571dd617 | 10231 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10232 | throw_error (TLS_GENERIC_ERROR, |
10233 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10234 | else |
109c3e39 AC |
10235 | throw_error (TLS_GENERIC_ERROR, |
10236 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10237 | } |
10238 | else | |
109c3e39 AC |
10239 | throw_error (TLS_GENERIC_ERROR, |
10240 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10241 | /* Not reached. */ |
10242 | return 0; | |
10243 | } | |
10244 | ||
711e434b PM |
10245 | /* Provide thread local base, i.e. Thread Information Block address. |
10246 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10247 | ||
70221824 | 10248 | static int |
bd7ae0f5 | 10249 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10250 | { |
4082afcc | 10251 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10252 | { |
10253 | struct remote_state *rs = get_remote_state (); | |
10254 | char *p = rs->buf; | |
10255 | char *endp = rs->buf + get_remote_packet_size (); | |
10256 | enum packet_result result; | |
10257 | ||
10258 | strcpy (p, "qGetTIBAddr:"); | |
10259 | p += strlen (p); | |
10260 | p = write_ptid (p, endp, ptid); | |
10261 | *p++ = '\0'; | |
10262 | ||
10263 | putpkt (rs->buf); | |
10264 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10265 | result = packet_ok (rs->buf, | |
10266 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10267 | if (result == PACKET_OK) | |
10268 | { | |
10269 | ULONGEST result; | |
10270 | ||
10271 | unpack_varlen_hex (rs->buf, &result); | |
10272 | if (addr) | |
10273 | *addr = (CORE_ADDR) result; | |
10274 | return 1; | |
10275 | } | |
10276 | else if (result == PACKET_UNKNOWN) | |
10277 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10278 | else | |
10279 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10280 | } | |
10281 | else | |
10282 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10283 | /* Not reached. */ | |
10284 | return 0; | |
10285 | } | |
10286 | ||
29709017 DJ |
10287 | /* Support for inferring a target description based on the current |
10288 | architecture and the size of a 'g' packet. While the 'g' packet | |
10289 | can have any size (since optional registers can be left off the | |
10290 | end), some sizes are easily recognizable given knowledge of the | |
10291 | approximate architecture. */ | |
10292 | ||
10293 | struct remote_g_packet_guess | |
10294 | { | |
10295 | int bytes; | |
10296 | const struct target_desc *tdesc; | |
10297 | }; | |
10298 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10299 | DEF_VEC_O(remote_g_packet_guess_s); | |
10300 | ||
10301 | struct remote_g_packet_data | |
10302 | { | |
10303 | VEC(remote_g_packet_guess_s) *guesses; | |
10304 | }; | |
10305 | ||
10306 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10307 | ||
10308 | static void * | |
10309 | remote_g_packet_data_init (struct obstack *obstack) | |
10310 | { | |
10311 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10312 | } | |
10313 | ||
10314 | void | |
10315 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10316 | const struct target_desc *tdesc) | |
10317 | { | |
10318 | struct remote_g_packet_data *data | |
10319 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
10320 | struct remote_g_packet_guess new_guess, *guess; | |
10321 | int ix; | |
10322 | ||
10323 | gdb_assert (tdesc != NULL); | |
10324 | ||
10325 | for (ix = 0; | |
10326 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10327 | ix++) | |
10328 | if (guess->bytes == bytes) | |
10329 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10330 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10331 | bytes); |
10332 | ||
10333 | new_guess.bytes = bytes; | |
10334 | new_guess.tdesc = tdesc; | |
10335 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10336 | } | |
10337 | ||
d962ef82 DJ |
10338 | /* Return 1 if remote_read_description would do anything on this target |
10339 | and architecture, 0 otherwise. */ | |
10340 | ||
10341 | static int | |
10342 | remote_read_description_p (struct target_ops *target) | |
10343 | { | |
10344 | struct remote_g_packet_data *data | |
f5656ead | 10345 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
10346 | |
10347 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10348 | return 1; | |
10349 | ||
10350 | return 0; | |
10351 | } | |
10352 | ||
29709017 DJ |
10353 | static const struct target_desc * |
10354 | remote_read_description (struct target_ops *target) | |
10355 | { | |
10356 | struct remote_g_packet_data *data | |
f5656ead | 10357 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 10358 | |
d962ef82 DJ |
10359 | /* Do not try this during initial connection, when we do not know |
10360 | whether there is a running but stopped thread. */ | |
10361 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10362 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10363 | |
29709017 DJ |
10364 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10365 | { | |
10366 | struct remote_g_packet_guess *guess; | |
10367 | int ix; | |
10368 | int bytes = send_g_packet (); | |
10369 | ||
10370 | for (ix = 0; | |
10371 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10372 | ix++) | |
10373 | if (guess->bytes == bytes) | |
10374 | return guess->tdesc; | |
10375 | ||
10376 | /* We discard the g packet. A minor optimization would be to | |
10377 | hold on to it, and fill the register cache once we have selected | |
10378 | an architecture, but it's too tricky to do safely. */ | |
10379 | } | |
10380 | ||
2117c711 | 10381 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10382 | } |
10383 | ||
a6b151f1 DJ |
10384 | /* Remote file transfer support. This is host-initiated I/O, not |
10385 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10386 | ||
10387 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10388 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10389 | decrease *LEFT. Otherwise raise an error. */ | |
10390 | ||
10391 | static void | |
10392 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10393 | { | |
10394 | int len = strlen (string); | |
10395 | ||
10396 | if (len > *left) | |
10397 | error (_("Packet too long for target.")); | |
10398 | ||
10399 | memcpy (*buffer, string, len); | |
10400 | *buffer += len; | |
10401 | *left -= len; | |
10402 | ||
10403 | /* NUL-terminate the buffer as a convenience, if there is | |
10404 | room. */ | |
10405 | if (*left) | |
10406 | **buffer = '\0'; | |
10407 | } | |
10408 | ||
10409 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10410 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10411 | decrease *LEFT. Otherwise raise an error. */ | |
10412 | ||
10413 | static void | |
10414 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10415 | int len) | |
10416 | { | |
10417 | if (2 * len > *left) | |
10418 | error (_("Packet too long for target.")); | |
10419 | ||
10420 | bin2hex (bytes, *buffer, len); | |
10421 | *buffer += 2 * len; | |
10422 | *left -= 2 * len; | |
10423 | ||
10424 | /* NUL-terminate the buffer as a convenience, if there is | |
10425 | room. */ | |
10426 | if (*left) | |
10427 | **buffer = '\0'; | |
10428 | } | |
10429 | ||
10430 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10431 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10432 | decrease *LEFT. Otherwise raise an error. */ | |
10433 | ||
10434 | static void | |
10435 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10436 | { | |
10437 | int len = hexnumlen (value); | |
10438 | ||
10439 | if (len > *left) | |
10440 | error (_("Packet too long for target.")); | |
10441 | ||
10442 | hexnumstr (*buffer, value); | |
10443 | *buffer += len; | |
10444 | *left -= len; | |
10445 | ||
10446 | /* NUL-terminate the buffer as a convenience, if there is | |
10447 | room. */ | |
10448 | if (*left) | |
10449 | **buffer = '\0'; | |
10450 | } | |
10451 | ||
10452 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10453 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10454 | was included, and *ATTACHMENT to point to the start of the annex | |
10455 | if any. The length of the packet isn't needed here; there may | |
10456 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10457 | ||
10458 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10459 | -1 is returned, the other variables may not be initialized. */ | |
10460 | ||
10461 | static int | |
10462 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10463 | int *remote_errno, char **attachment) | |
10464 | { | |
10465 | char *p, *p2; | |
10466 | ||
10467 | *remote_errno = 0; | |
10468 | *attachment = NULL; | |
10469 | ||
10470 | if (buffer[0] != 'F') | |
10471 | return -1; | |
10472 | ||
10473 | errno = 0; | |
10474 | *retcode = strtol (&buffer[1], &p, 16); | |
10475 | if (errno != 0 || p == &buffer[1]) | |
10476 | return -1; | |
10477 | ||
10478 | /* Check for ",errno". */ | |
10479 | if (*p == ',') | |
10480 | { | |
10481 | errno = 0; | |
10482 | *remote_errno = strtol (p + 1, &p2, 16); | |
10483 | if (errno != 0 || p + 1 == p2) | |
10484 | return -1; | |
10485 | p = p2; | |
10486 | } | |
10487 | ||
10488 | /* Check for ";attachment". If there is no attachment, the | |
10489 | packet should end here. */ | |
10490 | if (*p == ';') | |
10491 | { | |
10492 | *attachment = p + 1; | |
10493 | return 0; | |
10494 | } | |
10495 | else if (*p == '\0') | |
10496 | return 0; | |
10497 | else | |
10498 | return -1; | |
10499 | } | |
10500 | ||
10501 | /* Send a prepared I/O packet to the target and read its response. | |
10502 | The prepared packet is in the global RS->BUF before this function | |
10503 | is called, and the answer is there when we return. | |
10504 | ||
10505 | COMMAND_BYTES is the length of the request to send, which may include | |
10506 | binary data. WHICH_PACKET is the packet configuration to check | |
10507 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10508 | is set to the error number and -1 is returned. Otherwise the value | |
10509 | returned by the function is returned. | |
10510 | ||
10511 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10512 | attachment is expected; an error will be reported if there's a | |
10513 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10514 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10515 | attachment's length. */ | |
10516 | ||
10517 | static int | |
10518 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10519 | int *remote_errno, char **attachment, | |
10520 | int *attachment_len) | |
10521 | { | |
10522 | struct remote_state *rs = get_remote_state (); | |
10523 | int ret, bytes_read; | |
10524 | char *attachment_tmp; | |
10525 | ||
5d93a237 | 10526 | if (!rs->remote_desc |
4082afcc | 10527 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10528 | { |
10529 | *remote_errno = FILEIO_ENOSYS; | |
10530 | return -1; | |
10531 | } | |
10532 | ||
10533 | putpkt_binary (rs->buf, command_bytes); | |
10534 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10535 | ||
10536 | /* If it timed out, something is wrong. Don't try to parse the | |
10537 | buffer. */ | |
10538 | if (bytes_read < 0) | |
10539 | { | |
10540 | *remote_errno = FILEIO_EINVAL; | |
10541 | return -1; | |
10542 | } | |
10543 | ||
10544 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10545 | { | |
10546 | case PACKET_ERROR: | |
10547 | *remote_errno = FILEIO_EINVAL; | |
10548 | return -1; | |
10549 | case PACKET_UNKNOWN: | |
10550 | *remote_errno = FILEIO_ENOSYS; | |
10551 | return -1; | |
10552 | case PACKET_OK: | |
10553 | break; | |
10554 | } | |
10555 | ||
10556 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10557 | &attachment_tmp)) | |
10558 | { | |
10559 | *remote_errno = FILEIO_EINVAL; | |
10560 | return -1; | |
10561 | } | |
10562 | ||
10563 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10564 | if ((attachment_tmp == NULL && attachment != NULL) | |
10565 | || (attachment_tmp != NULL && attachment == NULL)) | |
10566 | { | |
10567 | *remote_errno = FILEIO_EINVAL; | |
10568 | return -1; | |
10569 | } | |
10570 | ||
10571 | /* If an attachment was found, it must point into the packet buffer; | |
10572 | work out how many bytes there were. */ | |
10573 | if (attachment_tmp != NULL) | |
10574 | { | |
10575 | *attachment = attachment_tmp; | |
10576 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10577 | } | |
10578 | ||
10579 | return ret; | |
10580 | } | |
10581 | ||
80152258 PA |
10582 | /* Invalidate the readahead cache. */ |
10583 | ||
10584 | static void | |
10585 | readahead_cache_invalidate (void) | |
10586 | { | |
10587 | struct remote_state *rs = get_remote_state (); | |
10588 | ||
10589 | rs->readahead_cache.fd = -1; | |
10590 | } | |
10591 | ||
10592 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10593 | ||
10594 | static void | |
10595 | readahead_cache_invalidate_fd (int fd) | |
10596 | { | |
10597 | struct remote_state *rs = get_remote_state (); | |
10598 | ||
10599 | if (rs->readahead_cache.fd == fd) | |
10600 | rs->readahead_cache.fd = -1; | |
10601 | } | |
10602 | ||
15a201c8 GB |
10603 | /* Set the filesystem remote_hostio functions that take FILENAME |
10604 | arguments will use. Return 0 on success, or -1 if an error | |
10605 | occurs (and set *REMOTE_ERRNO). */ | |
10606 | ||
10607 | static int | |
10608 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10609 | { | |
10610 | struct remote_state *rs = get_remote_state (); | |
10611 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10612 | char *p = rs->buf; | |
10613 | int left = get_remote_packet_size () - 1; | |
10614 | char arg[9]; | |
10615 | int ret; | |
10616 | ||
10617 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10618 | return 0; | |
10619 | ||
10620 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10621 | return 0; | |
10622 | ||
10623 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10624 | ||
10625 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10626 | remote_buffer_add_string (&p, &left, arg); | |
10627 | ||
10628 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10629 | remote_errno, NULL, NULL); | |
10630 | ||
10631 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10632 | return 0; | |
10633 | ||
10634 | if (ret == 0) | |
10635 | rs->fs_pid = required_pid; | |
10636 | ||
10637 | return ret; | |
10638 | } | |
10639 | ||
12e2a5fd | 10640 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10641 | |
10642 | static int | |
cd897586 | 10643 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 10644 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
10645 | int flags, int mode, int warn_if_slow, |
10646 | int *remote_errno) | |
a6b151f1 DJ |
10647 | { |
10648 | struct remote_state *rs = get_remote_state (); | |
10649 | char *p = rs->buf; | |
10650 | int left = get_remote_packet_size () - 1; | |
10651 | ||
4313b8c0 GB |
10652 | if (warn_if_slow) |
10653 | { | |
10654 | static int warning_issued = 0; | |
10655 | ||
10656 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
10657 | filename); | |
10658 | ||
10659 | if (!warning_issued) | |
10660 | { | |
10661 | warning (_("File transfers from remote targets can be slow." | |
10662 | " Use \"set sysroot\" to access files locally" | |
10663 | " instead.")); | |
10664 | warning_issued = 1; | |
10665 | } | |
10666 | } | |
10667 | ||
15a201c8 GB |
10668 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10669 | return -1; | |
10670 | ||
a6b151f1 DJ |
10671 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10672 | ||
10673 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10674 | strlen (filename)); | |
10675 | remote_buffer_add_string (&p, &left, ","); | |
10676 | ||
10677 | remote_buffer_add_int (&p, &left, flags); | |
10678 | remote_buffer_add_string (&p, &left, ","); | |
10679 | ||
10680 | remote_buffer_add_int (&p, &left, mode); | |
10681 | ||
10682 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10683 | remote_errno, NULL, NULL); | |
10684 | } | |
10685 | ||
12e2a5fd | 10686 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10687 | |
10688 | static int | |
0d866f62 TT |
10689 | remote_hostio_pwrite (struct target_ops *self, |
10690 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10691 | ULONGEST offset, int *remote_errno) |
10692 | { | |
10693 | struct remote_state *rs = get_remote_state (); | |
10694 | char *p = rs->buf; | |
10695 | int left = get_remote_packet_size (); | |
10696 | int out_len; | |
10697 | ||
80152258 PA |
10698 | readahead_cache_invalidate_fd (fd); |
10699 | ||
a6b151f1 DJ |
10700 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
10701 | ||
10702 | remote_buffer_add_int (&p, &left, fd); | |
10703 | remote_buffer_add_string (&p, &left, ","); | |
10704 | ||
10705 | remote_buffer_add_int (&p, &left, offset); | |
10706 | remote_buffer_add_string (&p, &left, ","); | |
10707 | ||
124e13d9 | 10708 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10709 | get_remote_packet_size () - (p - rs->buf)); |
10710 | ||
10711 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10712 | remote_errno, NULL, NULL); | |
10713 | } | |
10714 | ||
80152258 PA |
10715 | /* Helper for the implementation of to_fileio_pread. Read the file |
10716 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
10717 | |
10718 | static int | |
80152258 PA |
10719 | remote_hostio_pread_vFile (struct target_ops *self, |
10720 | int fd, gdb_byte *read_buf, int len, | |
10721 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
10722 | { |
10723 | struct remote_state *rs = get_remote_state (); | |
10724 | char *p = rs->buf; | |
10725 | char *attachment; | |
10726 | int left = get_remote_packet_size (); | |
10727 | int ret, attachment_len; | |
10728 | int read_len; | |
10729 | ||
10730 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10731 | ||
10732 | remote_buffer_add_int (&p, &left, fd); | |
10733 | remote_buffer_add_string (&p, &left, ","); | |
10734 | ||
10735 | remote_buffer_add_int (&p, &left, len); | |
10736 | remote_buffer_add_string (&p, &left, ","); | |
10737 | ||
10738 | remote_buffer_add_int (&p, &left, offset); | |
10739 | ||
10740 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10741 | remote_errno, &attachment, | |
10742 | &attachment_len); | |
10743 | ||
10744 | if (ret < 0) | |
10745 | return ret; | |
10746 | ||
bc20a4af | 10747 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10748 | read_buf, len); |
10749 | if (read_len != ret) | |
10750 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10751 | ||
10752 | return ret; | |
10753 | } | |
10754 | ||
80152258 PA |
10755 | /* Serve pread from the readahead cache. Returns number of bytes |
10756 | read, or 0 if the request can't be served from the cache. */ | |
10757 | ||
10758 | static int | |
10759 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
10760 | int fd, gdb_byte *read_buf, size_t len, | |
10761 | ULONGEST offset) | |
10762 | { | |
10763 | struct readahead_cache *cache = &rs->readahead_cache; | |
10764 | ||
10765 | if (cache->fd == fd | |
10766 | && cache->offset <= offset | |
10767 | && offset < cache->offset + cache->bufsize) | |
10768 | { | |
10769 | ULONGEST max = cache->offset + cache->bufsize; | |
10770 | ||
10771 | if (offset + len > max) | |
10772 | len = max - offset; | |
10773 | ||
10774 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
10775 | return len; | |
10776 | } | |
10777 | ||
10778 | return 0; | |
10779 | } | |
10780 | ||
10781 | /* Implementation of to_fileio_pread. */ | |
10782 | ||
10783 | static int | |
10784 | remote_hostio_pread (struct target_ops *self, | |
10785 | int fd, gdb_byte *read_buf, int len, | |
10786 | ULONGEST offset, int *remote_errno) | |
10787 | { | |
10788 | int ret; | |
10789 | struct remote_state *rs = get_remote_state (); | |
10790 | struct readahead_cache *cache = &rs->readahead_cache; | |
10791 | ||
10792 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10793 | if (ret > 0) | |
10794 | { | |
10795 | cache->hit_count++; | |
10796 | ||
10797 | if (remote_debug) | |
10798 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
10799 | pulongest (cache->hit_count)); | |
10800 | return ret; | |
10801 | } | |
10802 | ||
10803 | cache->miss_count++; | |
10804 | if (remote_debug) | |
10805 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
10806 | pulongest (cache->miss_count)); | |
10807 | ||
10808 | cache->fd = fd; | |
10809 | cache->offset = offset; | |
10810 | cache->bufsize = get_remote_packet_size (); | |
10811 | cache->buf = xrealloc (cache->buf, cache->bufsize); | |
10812 | ||
10813 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
10814 | cache->offset, remote_errno); | |
10815 | if (ret <= 0) | |
10816 | { | |
10817 | readahead_cache_invalidate_fd (fd); | |
10818 | return ret; | |
10819 | } | |
10820 | ||
10821 | cache->bufsize = ret; | |
10822 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10823 | } | |
10824 | ||
12e2a5fd | 10825 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
10826 | |
10827 | static int | |
df39ea25 | 10828 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10829 | { |
10830 | struct remote_state *rs = get_remote_state (); | |
10831 | char *p = rs->buf; | |
10832 | int left = get_remote_packet_size () - 1; | |
10833 | ||
80152258 PA |
10834 | readahead_cache_invalidate_fd (fd); |
10835 | ||
a6b151f1 DJ |
10836 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
10837 | ||
10838 | remote_buffer_add_int (&p, &left, fd); | |
10839 | ||
10840 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10841 | remote_errno, NULL, NULL); | |
10842 | } | |
10843 | ||
12e2a5fd | 10844 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
10845 | |
10846 | static int | |
dbbca37d | 10847 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
10848 | struct inferior *inf, const char *filename, |
10849 | int *remote_errno) | |
a6b151f1 DJ |
10850 | { |
10851 | struct remote_state *rs = get_remote_state (); | |
10852 | char *p = rs->buf; | |
10853 | int left = get_remote_packet_size () - 1; | |
10854 | ||
15a201c8 GB |
10855 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10856 | return -1; | |
10857 | ||
a6b151f1 DJ |
10858 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10859 | ||
10860 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10861 | strlen (filename)); | |
10862 | ||
10863 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10864 | remote_errno, NULL, NULL); | |
10865 | } | |
10866 | ||
12e2a5fd | 10867 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
10868 | |
10869 | static char * | |
fab5aa7c | 10870 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
10871 | struct inferior *inf, const char *filename, |
10872 | int *remote_errno) | |
b9e7b9c3 UW |
10873 | { |
10874 | struct remote_state *rs = get_remote_state (); | |
10875 | char *p = rs->buf; | |
10876 | char *attachment; | |
10877 | int left = get_remote_packet_size (); | |
10878 | int len, attachment_len; | |
10879 | int read_len; | |
10880 | char *ret; | |
10881 | ||
15a201c8 GB |
10882 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10883 | return NULL; | |
10884 | ||
b9e7b9c3 UW |
10885 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10886 | ||
10887 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10888 | strlen (filename)); | |
10889 | ||
10890 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10891 | remote_errno, &attachment, | |
10892 | &attachment_len); | |
10893 | ||
10894 | if (len < 0) | |
10895 | return NULL; | |
10896 | ||
10897 | ret = xmalloc (len + 1); | |
10898 | ||
bc20a4af PA |
10899 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10900 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10901 | if (read_len != len) |
10902 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10903 | ||
10904 | ret[len] = '\0'; | |
10905 | return ret; | |
10906 | } | |
10907 | ||
12e2a5fd | 10908 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
10909 | |
10910 | static int | |
10911 | remote_hostio_fstat (struct target_ops *self, | |
10912 | int fd, struct stat *st, | |
10913 | int *remote_errno) | |
10914 | { | |
10915 | struct remote_state *rs = get_remote_state (); | |
10916 | char *p = rs->buf; | |
10917 | int left = get_remote_packet_size (); | |
10918 | int attachment_len, ret; | |
10919 | char *attachment; | |
10920 | struct fio_stat fst; | |
10921 | int read_len; | |
10922 | ||
464b0089 GB |
10923 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10924 | ||
10925 | remote_buffer_add_int (&p, &left, fd); | |
10926 | ||
10927 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10928 | remote_errno, &attachment, | |
10929 | &attachment_len); | |
10930 | if (ret < 0) | |
0a93529c | 10931 | { |
464b0089 GB |
10932 | if (*remote_errno != FILEIO_ENOSYS) |
10933 | return ret; | |
10934 | ||
0a93529c GB |
10935 | /* Strictly we should return -1, ENOSYS here, but when |
10936 | "set sysroot remote:" was implemented in August 2008 | |
10937 | BFD's need for a stat function was sidestepped with | |
10938 | this hack. This was not remedied until March 2015 | |
10939 | so we retain the previous behavior to avoid breaking | |
10940 | compatibility. | |
10941 | ||
10942 | Note that the memset is a March 2015 addition; older | |
10943 | GDBs set st_size *and nothing else* so the structure | |
10944 | would have garbage in all other fields. This might | |
10945 | break something but retaining the previous behavior | |
10946 | here would be just too wrong. */ | |
10947 | ||
10948 | memset (st, 0, sizeof (struct stat)); | |
10949 | st->st_size = INT_MAX; | |
10950 | return 0; | |
10951 | } | |
10952 | ||
0a93529c GB |
10953 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10954 | (gdb_byte *) &fst, sizeof (fst)); | |
10955 | ||
10956 | if (read_len != ret) | |
10957 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10958 | ||
10959 | if (read_len != sizeof (fst)) | |
10960 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10961 | read_len, (int) sizeof (fst)); | |
10962 | ||
10963 | remote_fileio_to_host_stat (&fst, st); | |
10964 | ||
10965 | return 0; | |
10966 | } | |
10967 | ||
12e2a5fd | 10968 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
10969 | |
10970 | static int | |
10971 | remote_filesystem_is_local (struct target_ops *self) | |
10972 | { | |
10973 | /* Valgrind GDB presents itself as a remote target but works | |
10974 | on the local filesystem: it does not implement remote get | |
10975 | and users are not expected to set a sysroot. To handle | |
10976 | this case we treat the remote filesystem as local if the | |
10977 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
10978 | does not support vFile:open. */ | |
a3be80c3 | 10979 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
10980 | { |
10981 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
10982 | ||
10983 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
10984 | { | |
10985 | int fd, remote_errno; | |
10986 | ||
10987 | /* Try opening a file to probe support. The supplied | |
10988 | filename is irrelevant, we only care about whether | |
10989 | the stub recognizes the packet or not. */ | |
07c138c8 | 10990 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 10991 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
10992 | &remote_errno); |
10993 | ||
10994 | if (fd >= 0) | |
10995 | remote_hostio_close (self, fd, &remote_errno); | |
10996 | ||
10997 | ps = packet_support (PACKET_vFile_open); | |
10998 | } | |
10999 | ||
11000 | if (ps == PACKET_DISABLE) | |
11001 | { | |
11002 | static int warning_issued = 0; | |
11003 | ||
11004 | if (!warning_issued) | |
11005 | { | |
11006 | warning (_("remote target does not support file" | |
11007 | " transfer, attempting to access files" | |
11008 | " from local filesystem.")); | |
11009 | warning_issued = 1; | |
11010 | } | |
11011 | ||
11012 | return 1; | |
11013 | } | |
11014 | } | |
11015 | ||
11016 | return 0; | |
11017 | } | |
11018 | ||
a6b151f1 DJ |
11019 | static int |
11020 | remote_fileio_errno_to_host (int errnum) | |
11021 | { | |
11022 | switch (errnum) | |
11023 | { | |
11024 | case FILEIO_EPERM: | |
11025 | return EPERM; | |
11026 | case FILEIO_ENOENT: | |
11027 | return ENOENT; | |
11028 | case FILEIO_EINTR: | |
11029 | return EINTR; | |
11030 | case FILEIO_EIO: | |
11031 | return EIO; | |
11032 | case FILEIO_EBADF: | |
11033 | return EBADF; | |
11034 | case FILEIO_EACCES: | |
11035 | return EACCES; | |
11036 | case FILEIO_EFAULT: | |
11037 | return EFAULT; | |
11038 | case FILEIO_EBUSY: | |
11039 | return EBUSY; | |
11040 | case FILEIO_EEXIST: | |
11041 | return EEXIST; | |
11042 | case FILEIO_ENODEV: | |
11043 | return ENODEV; | |
11044 | case FILEIO_ENOTDIR: | |
11045 | return ENOTDIR; | |
11046 | case FILEIO_EISDIR: | |
11047 | return EISDIR; | |
11048 | case FILEIO_EINVAL: | |
11049 | return EINVAL; | |
11050 | case FILEIO_ENFILE: | |
11051 | return ENFILE; | |
11052 | case FILEIO_EMFILE: | |
11053 | return EMFILE; | |
11054 | case FILEIO_EFBIG: | |
11055 | return EFBIG; | |
11056 | case FILEIO_ENOSPC: | |
11057 | return ENOSPC; | |
11058 | case FILEIO_ESPIPE: | |
11059 | return ESPIPE; | |
11060 | case FILEIO_EROFS: | |
11061 | return EROFS; | |
11062 | case FILEIO_ENOSYS: | |
11063 | return ENOSYS; | |
11064 | case FILEIO_ENAMETOOLONG: | |
11065 | return ENAMETOOLONG; | |
11066 | } | |
11067 | return -1; | |
11068 | } | |
11069 | ||
11070 | static char * | |
11071 | remote_hostio_error (int errnum) | |
11072 | { | |
11073 | int host_error = remote_fileio_errno_to_host (errnum); | |
11074 | ||
11075 | if (host_error == -1) | |
11076 | error (_("Unknown remote I/O error %d"), errnum); | |
11077 | else | |
11078 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11079 | } | |
11080 | ||
a6b151f1 DJ |
11081 | static void |
11082 | remote_hostio_close_cleanup (void *opaque) | |
11083 | { | |
11084 | int fd = *(int *) opaque; | |
11085 | int remote_errno; | |
11086 | ||
df39ea25 | 11087 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11088 | } |
11089 | ||
11090 | void | |
11091 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11092 | { | |
11093 | struct cleanup *back_to, *close_cleanup; | |
11094 | int retcode, fd, remote_errno, bytes, io_size; | |
11095 | FILE *file; | |
11096 | gdb_byte *buffer; | |
11097 | int bytes_in_buffer; | |
11098 | int saw_eof; | |
11099 | ULONGEST offset; | |
5d93a237 | 11100 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11101 | |
5d93a237 | 11102 | if (!rs->remote_desc) |
a6b151f1 DJ |
11103 | error (_("command can only be used with remote target")); |
11104 | ||
614c279d | 11105 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11106 | if (file == NULL) |
11107 | perror_with_name (local_file); | |
7c8a8b04 | 11108 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11109 | |
07c138c8 | 11110 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11111 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11112 | | FILEIO_O_TRUNC), |
4313b8c0 | 11113 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11114 | if (fd == -1) |
11115 | remote_hostio_error (remote_errno); | |
11116 | ||
11117 | /* Send up to this many bytes at once. They won't all fit in the | |
11118 | remote packet limit, so we'll transfer slightly fewer. */ | |
11119 | io_size = get_remote_packet_size (); | |
11120 | buffer = xmalloc (io_size); | |
11121 | make_cleanup (xfree, buffer); | |
11122 | ||
11123 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11124 | ||
11125 | bytes_in_buffer = 0; | |
11126 | saw_eof = 0; | |
11127 | offset = 0; | |
11128 | while (bytes_in_buffer || !saw_eof) | |
11129 | { | |
11130 | if (!saw_eof) | |
11131 | { | |
3e43a32a MS |
11132 | bytes = fread (buffer + bytes_in_buffer, 1, |
11133 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11134 | file); |
11135 | if (bytes == 0) | |
11136 | { | |
11137 | if (ferror (file)) | |
11138 | error (_("Error reading %s."), local_file); | |
11139 | else | |
11140 | { | |
11141 | /* EOF. Unless there is something still in the | |
11142 | buffer from the last iteration, we are done. */ | |
11143 | saw_eof = 1; | |
11144 | if (bytes_in_buffer == 0) | |
11145 | break; | |
11146 | } | |
11147 | } | |
11148 | } | |
11149 | else | |
11150 | bytes = 0; | |
11151 | ||
11152 | bytes += bytes_in_buffer; | |
11153 | bytes_in_buffer = 0; | |
11154 | ||
0d866f62 TT |
11155 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11156 | fd, buffer, bytes, | |
3e43a32a | 11157 | offset, &remote_errno); |
a6b151f1 DJ |
11158 | |
11159 | if (retcode < 0) | |
11160 | remote_hostio_error (remote_errno); | |
11161 | else if (retcode == 0) | |
11162 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11163 | else if (retcode < bytes) | |
11164 | { | |
11165 | /* Short write. Save the rest of the read data for the next | |
11166 | write. */ | |
11167 | bytes_in_buffer = bytes - retcode; | |
11168 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11169 | } | |
11170 | ||
11171 | offset += retcode; | |
11172 | } | |
11173 | ||
11174 | discard_cleanups (close_cleanup); | |
df39ea25 | 11175 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11176 | remote_hostio_error (remote_errno); |
11177 | ||
11178 | if (from_tty) | |
11179 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11180 | do_cleanups (back_to); | |
11181 | } | |
11182 | ||
11183 | void | |
11184 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11185 | { | |
11186 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11187 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11188 | FILE *file; |
11189 | gdb_byte *buffer; | |
11190 | ULONGEST offset; | |
5d93a237 | 11191 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11192 | |
5d93a237 | 11193 | if (!rs->remote_desc) |
a6b151f1 DJ |
11194 | error (_("command can only be used with remote target")); |
11195 | ||
07c138c8 | 11196 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11197 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11198 | &remote_errno); | |
a6b151f1 DJ |
11199 | if (fd == -1) |
11200 | remote_hostio_error (remote_errno); | |
11201 | ||
614c279d | 11202 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11203 | if (file == NULL) |
11204 | perror_with_name (local_file); | |
7c8a8b04 | 11205 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11206 | |
11207 | /* Send up to this many bytes at once. They won't all fit in the | |
11208 | remote packet limit, so we'll transfer slightly fewer. */ | |
11209 | io_size = get_remote_packet_size (); | |
11210 | buffer = xmalloc (io_size); | |
11211 | make_cleanup (xfree, buffer); | |
11212 | ||
11213 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11214 | ||
11215 | offset = 0; | |
11216 | while (1) | |
11217 | { | |
a3be983c TT |
11218 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11219 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11220 | if (bytes == 0) |
11221 | /* Success, but no bytes, means end-of-file. */ | |
11222 | break; | |
11223 | if (bytes == -1) | |
11224 | remote_hostio_error (remote_errno); | |
11225 | ||
11226 | offset += bytes; | |
11227 | ||
11228 | bytes = fwrite (buffer, 1, bytes, file); | |
11229 | if (bytes == 0) | |
11230 | perror_with_name (local_file); | |
11231 | } | |
11232 | ||
11233 | discard_cleanups (close_cleanup); | |
df39ea25 | 11234 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11235 | remote_hostio_error (remote_errno); |
11236 | ||
11237 | if (from_tty) | |
11238 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11239 | do_cleanups (back_to); | |
11240 | } | |
11241 | ||
11242 | void | |
11243 | remote_file_delete (const char *remote_file, int from_tty) | |
11244 | { | |
11245 | int retcode, remote_errno; | |
5d93a237 | 11246 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11247 | |
5d93a237 | 11248 | if (!rs->remote_desc) |
a6b151f1 DJ |
11249 | error (_("command can only be used with remote target")); |
11250 | ||
dbbca37d | 11251 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11252 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11253 | if (retcode == -1) |
11254 | remote_hostio_error (remote_errno); | |
11255 | ||
11256 | if (from_tty) | |
11257 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11258 | } | |
11259 | ||
11260 | static void | |
11261 | remote_put_command (char *args, int from_tty) | |
11262 | { | |
11263 | struct cleanup *back_to; | |
11264 | char **argv; | |
11265 | ||
d1a41061 PP |
11266 | if (args == NULL) |
11267 | error_no_arg (_("file to put")); | |
11268 | ||
11269 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11270 | back_to = make_cleanup_freeargv (argv); |
11271 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11272 | error (_("Invalid parameters to remote put")); | |
11273 | ||
11274 | remote_file_put (argv[0], argv[1], from_tty); | |
11275 | ||
11276 | do_cleanups (back_to); | |
11277 | } | |
11278 | ||
11279 | static void | |
11280 | remote_get_command (char *args, int from_tty) | |
11281 | { | |
11282 | struct cleanup *back_to; | |
11283 | char **argv; | |
11284 | ||
d1a41061 PP |
11285 | if (args == NULL) |
11286 | error_no_arg (_("file to get")); | |
11287 | ||
11288 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11289 | back_to = make_cleanup_freeargv (argv); |
11290 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11291 | error (_("Invalid parameters to remote get")); | |
11292 | ||
11293 | remote_file_get (argv[0], argv[1], from_tty); | |
11294 | ||
11295 | do_cleanups (back_to); | |
11296 | } | |
11297 | ||
11298 | static void | |
11299 | remote_delete_command (char *args, int from_tty) | |
11300 | { | |
11301 | struct cleanup *back_to; | |
11302 | char **argv; | |
11303 | ||
d1a41061 PP |
11304 | if (args == NULL) |
11305 | error_no_arg (_("file to delete")); | |
11306 | ||
11307 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11308 | back_to = make_cleanup_freeargv (argv); |
11309 | if (argv[0] == NULL || argv[1] != NULL) | |
11310 | error (_("Invalid parameters to remote delete")); | |
11311 | ||
11312 | remote_file_delete (argv[0], from_tty); | |
11313 | ||
11314 | do_cleanups (back_to); | |
11315 | } | |
11316 | ||
11317 | static void | |
11318 | remote_command (char *args, int from_tty) | |
11319 | { | |
635c7e8a | 11320 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11321 | } |
11322 | ||
b2175913 | 11323 | static int |
19db3e69 | 11324 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11325 | { |
4082afcc PA |
11326 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11327 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11328 | return 1; |
11329 | else | |
11330 | return 0; | |
b2175913 MS |
11331 | } |
11332 | ||
74531fed | 11333 | static int |
2a9a2795 | 11334 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11335 | { |
11336 | return 1; | |
11337 | } | |
11338 | ||
03583c20 | 11339 | static int |
2bfc0540 | 11340 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11341 | { |
11342 | /* Only supported in extended mode. */ | |
11343 | return 0; | |
11344 | } | |
11345 | ||
8a305172 | 11346 | static int |
86ce2668 | 11347 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11348 | { |
11349 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11350 | |
901f9912 UW |
11351 | /* Only extended-remote handles being attached to multiple |
11352 | processes, even though plain remote can use the multi-process | |
11353 | thread id extensions, so that GDB knows the target process's | |
11354 | PID. */ | |
11355 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
11356 | } |
11357 | ||
70221824 | 11358 | static int |
782b2b07 SS |
11359 | remote_supports_cond_tracepoints (void) |
11360 | { | |
4082afcc | 11361 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11362 | } |
11363 | ||
3788aec7 | 11364 | static int |
efcc2da7 | 11365 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11366 | { |
4082afcc | 11367 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11368 | } |
11369 | ||
70221824 | 11370 | static int |
7a697b8d SS |
11371 | remote_supports_fast_tracepoints (void) |
11372 | { | |
4082afcc | 11373 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11374 | } |
11375 | ||
0fb4aa4b PA |
11376 | static int |
11377 | remote_supports_static_tracepoints (void) | |
11378 | { | |
4082afcc | 11379 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11380 | } |
11381 | ||
1e4d1764 YQ |
11382 | static int |
11383 | remote_supports_install_in_trace (void) | |
11384 | { | |
4082afcc | 11385 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11386 | } |
11387 | ||
d248b706 | 11388 | static int |
7d178d6a | 11389 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11390 | { |
4082afcc PA |
11391 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11392 | == PACKET_ENABLE); | |
d248b706 KY |
11393 | } |
11394 | ||
3065dfb6 | 11395 | static int |
6de37a3a | 11396 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11397 | { |
4082afcc | 11398 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11399 | } |
11400 | ||
d3ce09f5 | 11401 | static int |
78eff0ec | 11402 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11403 | { |
4082afcc | 11404 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11405 | } |
11406 | ||
35b1e5cc | 11407 | static void |
ecae04e1 | 11408 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11409 | { |
11410 | putpkt ("QTinit"); | |
11411 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11412 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11413 | error (_("Target does not support this command.")); |
11414 | } | |
11415 | ||
11416 | static void free_actions_list (char **actions_list); | |
11417 | static void free_actions_list_cleanup_wrapper (void *); | |
11418 | static void | |
11419 | free_actions_list_cleanup_wrapper (void *al) | |
11420 | { | |
11421 | free_actions_list (al); | |
11422 | } | |
11423 | ||
11424 | static void | |
11425 | free_actions_list (char **actions_list) | |
11426 | { | |
11427 | int ndx; | |
11428 | ||
11429 | if (actions_list == 0) | |
11430 | return; | |
11431 | ||
11432 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11433 | xfree (actions_list[ndx]); | |
11434 | ||
11435 | xfree (actions_list); | |
11436 | } | |
11437 | ||
409873ef SS |
11438 | /* Recursive routine to walk through command list including loops, and |
11439 | download packets for each command. */ | |
11440 | ||
11441 | static void | |
11442 | remote_download_command_source (int num, ULONGEST addr, | |
11443 | struct command_line *cmds) | |
11444 | { | |
11445 | struct remote_state *rs = get_remote_state (); | |
11446 | struct command_line *cmd; | |
11447 | ||
11448 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11449 | { | |
0df8b418 | 11450 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11451 | strcpy (rs->buf, "QTDPsrc:"); |
11452 | encode_source_string (num, addr, "cmd", cmd->line, | |
11453 | rs->buf + strlen (rs->buf), | |
11454 | rs->buf_size - strlen (rs->buf)); | |
11455 | putpkt (rs->buf); | |
11456 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11457 | if (strcmp (target_buf, "OK")) | |
11458 | warning (_("Target does not support source download.")); | |
11459 | ||
11460 | if (cmd->control_type == while_control | |
11461 | || cmd->control_type == while_stepping_control) | |
11462 | { | |
11463 | remote_download_command_source (num, addr, *cmd->body_list); | |
11464 | ||
0df8b418 | 11465 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11466 | strcpy (rs->buf, "QTDPsrc:"); |
11467 | encode_source_string (num, addr, "cmd", "end", | |
11468 | rs->buf + strlen (rs->buf), | |
11469 | rs->buf_size - strlen (rs->buf)); | |
11470 | putpkt (rs->buf); | |
11471 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11472 | if (strcmp (target_buf, "OK")) | |
11473 | warning (_("Target does not support source download.")); | |
11474 | } | |
11475 | } | |
11476 | } | |
11477 | ||
35b1e5cc | 11478 | static void |
548f7808 | 11479 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11480 | { |
bba74b36 | 11481 | #define BUF_SIZE 2048 |
e8ba3115 | 11482 | |
35b1e5cc | 11483 | CORE_ADDR tpaddr; |
409873ef | 11484 | char addrbuf[40]; |
bba74b36 | 11485 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11486 | char **tdp_actions; |
11487 | char **stepping_actions; | |
11488 | int ndx; | |
11489 | struct cleanup *old_chain = NULL; | |
11490 | struct agent_expr *aexpr; | |
11491 | struct cleanup *aexpr_chain = NULL; | |
11492 | char *pkt; | |
e8ba3115 | 11493 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11494 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11495 | |
dc673c81 | 11496 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11497 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11498 | tdp_actions); | |
11499 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11500 | stepping_actions); | |
11501 | ||
11502 | tpaddr = loc->address; | |
11503 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11504 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11505 | addrbuf, /* address */ | |
11506 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11507 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11508 | /* Fast tracepoints are mostly handled by the target, but we can |
11509 | tell the target how big of an instruction block should be moved | |
11510 | around. */ | |
11511 | if (b->type == bp_fast_tracepoint) | |
11512 | { | |
11513 | /* Only test for support at download time; we may not know | |
11514 | target capabilities at definition time. */ | |
11515 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11516 | { |
6b940e6a PL |
11517 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11518 | NULL)) | |
bba74b36 | 11519 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11520 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11521 | else |
e8ba3115 YQ |
11522 | /* If it passed validation at definition but fails now, |
11523 | something is very wrong. */ | |
11524 | internal_error (__FILE__, __LINE__, | |
11525 | _("Fast tracepoint not " | |
11526 | "valid during download")); | |
35b1e5cc | 11527 | } |
e8ba3115 YQ |
11528 | else |
11529 | /* Fast tracepoints are functionally identical to regular | |
11530 | tracepoints, so don't take lack of support as a reason to | |
11531 | give up on the trace run. */ | |
11532 | warning (_("Target does not support fast tracepoints, " | |
11533 | "downloading %d as regular tracepoint"), b->number); | |
11534 | } | |
11535 | else if (b->type == bp_static_tracepoint) | |
11536 | { | |
11537 | /* Only test for support at download time; we may not know | |
11538 | target capabilities at definition time. */ | |
11539 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11540 | { |
e8ba3115 | 11541 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11542 | |
e8ba3115 YQ |
11543 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11544 | strcat (buf, ":S"); | |
0fb4aa4b | 11545 | else |
e8ba3115 | 11546 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11547 | } |
e8ba3115 YQ |
11548 | else |
11549 | /* Fast tracepoints are functionally identical to regular | |
11550 | tracepoints, so don't take lack of support as a reason | |
11551 | to give up on the trace run. */ | |
11552 | error (_("Target does not support static tracepoints")); | |
11553 | } | |
11554 | /* If the tracepoint has a conditional, make it into an agent | |
11555 | expression and append to the definition. */ | |
11556 | if (loc->cond) | |
11557 | { | |
11558 | /* Only test support at download time, we may not know target | |
11559 | capabilities at definition time. */ | |
11560 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11561 | { |
e8ba3115 YQ |
11562 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11563 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11564 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11565 | aexpr->len); | |
e8ba3115 YQ |
11566 | pkt = buf + strlen (buf); |
11567 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11568 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11569 | *pkt = '\0'; | |
11570 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11571 | } |
e8ba3115 YQ |
11572 | else |
11573 | warning (_("Target does not support conditional tracepoints, " | |
11574 | "ignoring tp %d cond"), b->number); | |
11575 | } | |
35b1e5cc | 11576 | |
d9b3f62e | 11577 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11578 | strcat (buf, "-"); |
11579 | putpkt (buf); | |
11580 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11581 | if (strcmp (target_buf, "OK")) | |
11582 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11583 | |
e8ba3115 YQ |
11584 | /* do_single_steps (t); */ |
11585 | if (tdp_actions) | |
11586 | { | |
11587 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11588 | { |
e8ba3115 | 11589 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11590 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11591 | b->number, addrbuf, /* address */ | |
11592 | tdp_actions[ndx], | |
11593 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11594 | ? '-' : 0)); | |
e8ba3115 YQ |
11595 | putpkt (buf); |
11596 | remote_get_noisy_reply (&target_buf, | |
11597 | &target_buf_size); | |
11598 | if (strcmp (target_buf, "OK")) | |
11599 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11600 | } |
e8ba3115 YQ |
11601 | } |
11602 | if (stepping_actions) | |
11603 | { | |
11604 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11605 | { |
e8ba3115 | 11606 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11607 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11608 | b->number, addrbuf, /* address */ | |
11609 | ((ndx == 0) ? "S" : ""), | |
11610 | stepping_actions[ndx], | |
11611 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11612 | putpkt (buf); |
11613 | remote_get_noisy_reply (&target_buf, | |
11614 | &target_buf_size); | |
11615 | if (strcmp (target_buf, "OK")) | |
11616 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11617 | } |
e8ba3115 | 11618 | } |
409873ef | 11619 | |
4082afcc | 11620 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11621 | { |
f00aae0f | 11622 | if (b->location != NULL) |
409873ef | 11623 | { |
e8ba3115 | 11624 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11625 | encode_source_string (b->number, loc->address, "at", |
11626 | event_location_to_string (b->location), | |
11627 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11628 | putpkt (buf); |
11629 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11630 | if (strcmp (target_buf, "OK")) | |
11631 | warning (_("Target does not support source download.")); | |
409873ef | 11632 | } |
e8ba3115 YQ |
11633 | if (b->cond_string) |
11634 | { | |
11635 | strcpy (buf, "QTDPsrc:"); | |
11636 | encode_source_string (b->number, loc->address, | |
11637 | "cond", b->cond_string, buf + strlen (buf), | |
11638 | 2048 - strlen (buf)); | |
11639 | putpkt (buf); | |
11640 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11641 | if (strcmp (target_buf, "OK")) | |
11642 | warning (_("Target does not support source download.")); | |
11643 | } | |
11644 | remote_download_command_source (b->number, loc->address, | |
11645 | breakpoint_commands (b)); | |
35b1e5cc | 11646 | } |
e8ba3115 YQ |
11647 | |
11648 | do_cleanups (old_chain); | |
35b1e5cc SS |
11649 | } |
11650 | ||
1e4d1764 | 11651 | static int |
a52a8357 | 11652 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11653 | { |
1e51243a PA |
11654 | struct remote_state *rs = get_remote_state (); |
11655 | struct trace_status *ts; | |
11656 | int status; | |
11657 | ||
11658 | /* Don't try to install tracepoints until we've relocated our | |
11659 | symbols, and fetched and merged the target's tracepoint list with | |
11660 | ours. */ | |
11661 | if (rs->starting_up) | |
11662 | return 0; | |
11663 | ||
11664 | ts = current_trace_status (); | |
8bd200f1 | 11665 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11666 | |
11667 | if (status == -1 || !ts->running_known || !ts->running) | |
11668 | return 0; | |
11669 | ||
11670 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11671 | installing tracepoint in trace, we have to return. */ | |
11672 | if (!remote_supports_install_in_trace ()) | |
11673 | return 0; | |
11674 | ||
11675 | return 1; | |
11676 | } | |
11677 | ||
11678 | ||
35b1e5cc | 11679 | static void |
559d2b81 TT |
11680 | remote_download_trace_state_variable (struct target_ops *self, |
11681 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11682 | { |
11683 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11684 | char *p; |
35b1e5cc | 11685 | |
bba74b36 YQ |
11686 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11687 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11688 | tsv->builtin); | |
00bf0b85 SS |
11689 | p = rs->buf + strlen (rs->buf); |
11690 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11691 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11692 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11693 | *p++ = '\0'; |
35b1e5cc SS |
11694 | putpkt (rs->buf); |
11695 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11696 | if (*target_buf == '\0') |
11697 | error (_("Target does not support this command.")); | |
11698 | if (strcmp (target_buf, "OK") != 0) | |
11699 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11700 | } |
11701 | ||
d248b706 | 11702 | static void |
46670d57 TT |
11703 | remote_enable_tracepoint (struct target_ops *self, |
11704 | struct bp_location *location) | |
d248b706 KY |
11705 | { |
11706 | struct remote_state *rs = get_remote_state (); | |
11707 | char addr_buf[40]; | |
11708 | ||
11709 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11710 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11711 | location->owner->number, addr_buf); | |
d248b706 KY |
11712 | putpkt (rs->buf); |
11713 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11714 | if (*rs->buf == '\0') | |
11715 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11716 | if (strcmp (rs->buf, "OK") != 0) | |
11717 | error (_("Error on target while enabling tracepoint.")); | |
11718 | } | |
11719 | ||
11720 | static void | |
780b049c TT |
11721 | remote_disable_tracepoint (struct target_ops *self, |
11722 | struct bp_location *location) | |
d248b706 KY |
11723 | { |
11724 | struct remote_state *rs = get_remote_state (); | |
11725 | char addr_buf[40]; | |
11726 | ||
11727 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11728 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11729 | location->owner->number, addr_buf); | |
d248b706 KY |
11730 | putpkt (rs->buf); |
11731 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11732 | if (*rs->buf == '\0') | |
11733 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11734 | if (strcmp (rs->buf, "OK") != 0) | |
11735 | error (_("Error on target while disabling tracepoint.")); | |
11736 | } | |
11737 | ||
35b1e5cc | 11738 | static void |
583f9a86 | 11739 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
11740 | { |
11741 | asection *s; | |
81b9b86e | 11742 | bfd *abfd = NULL; |
35b1e5cc | 11743 | bfd_size_type size; |
608bcef2 | 11744 | bfd_vma vma; |
35b1e5cc | 11745 | int anysecs = 0; |
c2fa21f1 | 11746 | int offset = 0; |
35b1e5cc SS |
11747 | |
11748 | if (!exec_bfd) | |
11749 | return; /* No information to give. */ | |
11750 | ||
11751 | strcpy (target_buf, "QTro"); | |
9779ab84 | 11752 | offset = strlen (target_buf); |
35b1e5cc SS |
11753 | for (s = exec_bfd->sections; s; s = s->next) |
11754 | { | |
11755 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 11756 | int sec_length; |
35b1e5cc SS |
11757 | |
11758 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 11759 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
11760 | (s->flags & SEC_READONLY) == 0) |
11761 | continue; | |
11762 | ||
11763 | anysecs = 1; | |
81b9b86e | 11764 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 11765 | size = bfd_get_section_size (s); |
608bcef2 HZ |
11766 | sprintf_vma (tmp1, vma); |
11767 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
11768 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
11769 | if (offset + sec_length + 1 > target_buf_size) | |
11770 | { | |
4082afcc | 11771 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 11772 | warning (_("\ |
c2fa21f1 HZ |
11773 | Too many sections for read-only sections definition packet.")); |
11774 | break; | |
11775 | } | |
bba74b36 YQ |
11776 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11777 | tmp1, tmp2); | |
c2fa21f1 | 11778 | offset += sec_length; |
35b1e5cc SS |
11779 | } |
11780 | if (anysecs) | |
11781 | { | |
11782 | putpkt (target_buf); | |
11783 | getpkt (&target_buf, &target_buf_size, 0); | |
11784 | } | |
11785 | } | |
11786 | ||
11787 | static void | |
e2d1aae3 | 11788 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11789 | { |
11790 | putpkt ("QTStart"); | |
11791 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11792 | if (*target_buf == '\0') |
11793 | error (_("Target does not support this command.")); | |
11794 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11795 | error (_("Bogus reply from target: %s"), target_buf); |
11796 | } | |
11797 | ||
11798 | static int | |
8bd200f1 | 11799 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11800 | { |
953b98d1 | 11801 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11802 | char *p = NULL; |
0df8b418 | 11803 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11804 | extern int trace_regblock_size; |
bd3eecc3 PA |
11805 | enum packet_result result; |
11806 | ||
4082afcc | 11807 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11808 | return -1; |
a744cf53 | 11809 | |
00bf0b85 SS |
11810 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11811 | ||
049dc89b JK |
11812 | putpkt ("qTStatus"); |
11813 | ||
492d29ea | 11814 | TRY |
67f41397 JK |
11815 | { |
11816 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11817 | } | |
492d29ea | 11818 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11819 | { |
598d3636 JK |
11820 | if (ex.error != TARGET_CLOSE_ERROR) |
11821 | { | |
11822 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11823 | return -1; | |
11824 | } | |
11825 | throw_exception (ex); | |
67f41397 | 11826 | } |
492d29ea | 11827 | END_CATCH |
00bf0b85 | 11828 | |
bd3eecc3 PA |
11829 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11830 | ||
00bf0b85 | 11831 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11832 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11833 | return -1; |
35b1e5cc | 11834 | |
00bf0b85 | 11835 | /* We're working with a live target. */ |
f5911ea1 | 11836 | ts->filename = NULL; |
00bf0b85 | 11837 | |
00bf0b85 | 11838 | if (*p++ != 'T') |
35b1e5cc SS |
11839 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11840 | ||
84cebc4a YQ |
11841 | /* Function 'parse_trace_status' sets default value of each field of |
11842 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11843 | parse_trace_status (p, ts); |
11844 | ||
11845 | return ts->running; | |
35b1e5cc SS |
11846 | } |
11847 | ||
70221824 | 11848 | static void |
db90e85c | 11849 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11850 | struct uploaded_tp *utp) |
11851 | { | |
11852 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11853 | char *reply; |
11854 | struct bp_location *loc; | |
11855 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11856 | size_t size = get_remote_packet_size (); |
f196051f SS |
11857 | |
11858 | if (tp) | |
11859 | { | |
11860 | tp->base.hit_count = 0; | |
11861 | tp->traceframe_usage = 0; | |
11862 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11863 | { | |
11864 | /* If the tracepoint was never downloaded, don't go asking for | |
11865 | any status. */ | |
11866 | if (tp->number_on_target == 0) | |
11867 | continue; | |
bba74b36 YQ |
11868 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11869 | phex_nz (loc->address, 0)); | |
f196051f SS |
11870 | putpkt (rs->buf); |
11871 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11872 | if (reply && *reply) | |
11873 | { | |
11874 | if (*reply == 'V') | |
11875 | parse_tracepoint_status (reply + 1, bp, utp); | |
11876 | } | |
11877 | } | |
11878 | } | |
11879 | else if (utp) | |
11880 | { | |
11881 | utp->hit_count = 0; | |
11882 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11883 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11884 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11885 | putpkt (rs->buf); |
11886 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11887 | if (reply && *reply) | |
11888 | { | |
11889 | if (*reply == 'V') | |
11890 | parse_tracepoint_status (reply + 1, bp, utp); | |
11891 | } | |
11892 | } | |
11893 | } | |
11894 | ||
35b1e5cc | 11895 | static void |
74499f1b | 11896 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11897 | { |
11898 | putpkt ("QTStop"); | |
11899 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11900 | if (*target_buf == '\0') |
11901 | error (_("Target does not support this command.")); | |
11902 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11903 | error (_("Bogus reply from target: %s"), target_buf); |
11904 | } | |
11905 | ||
11906 | static int | |
bd4c6793 TT |
11907 | remote_trace_find (struct target_ops *self, |
11908 | enum trace_find_type type, int num, | |
cc5925ad | 11909 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11910 | int *tpp) |
11911 | { | |
11912 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11913 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11914 | char *p, *reply; |
11915 | int target_frameno = -1, target_tracept = -1; | |
11916 | ||
e6e4e701 PA |
11917 | /* Lookups other than by absolute frame number depend on the current |
11918 | trace selected, so make sure it is correct on the remote end | |
11919 | first. */ | |
11920 | if (type != tfind_number) | |
11921 | set_remote_traceframe (); | |
11922 | ||
35b1e5cc SS |
11923 | p = rs->buf; |
11924 | strcpy (p, "QTFrame:"); | |
11925 | p = strchr (p, '\0'); | |
11926 | switch (type) | |
11927 | { | |
11928 | case tfind_number: | |
bba74b36 | 11929 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11930 | break; |
11931 | case tfind_pc: | |
bba74b36 | 11932 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11933 | break; |
11934 | case tfind_tp: | |
bba74b36 | 11935 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11936 | break; |
11937 | case tfind_range: | |
bba74b36 YQ |
11938 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11939 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11940 | break; |
11941 | case tfind_outside: | |
bba74b36 YQ |
11942 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11943 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11944 | break; |
11945 | default: | |
9b20d036 | 11946 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11947 | } |
11948 | ||
11949 | putpkt (rs->buf); | |
2f65bcb7 | 11950 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11951 | if (*reply == '\0') |
11952 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11953 | |
11954 | while (reply && *reply) | |
11955 | switch (*reply) | |
11956 | { | |
11957 | case 'F': | |
f197e0f1 VP |
11958 | p = ++reply; |
11959 | target_frameno = (int) strtol (p, &reply, 16); | |
11960 | if (reply == p) | |
11961 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11962 | /* Don't update our remote traceframe number cache on failure |
11963 | to select a remote traceframe. */ | |
f197e0f1 VP |
11964 | if (target_frameno == -1) |
11965 | return -1; | |
35b1e5cc SS |
11966 | break; |
11967 | case 'T': | |
f197e0f1 VP |
11968 | p = ++reply; |
11969 | target_tracept = (int) strtol (p, &reply, 16); | |
11970 | if (reply == p) | |
11971 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11972 | break; |
11973 | case 'O': /* "OK"? */ | |
11974 | if (reply[1] == 'K' && reply[2] == '\0') | |
11975 | reply += 2; | |
11976 | else | |
11977 | error (_("Bogus reply from target: %s"), reply); | |
11978 | break; | |
11979 | default: | |
11980 | error (_("Bogus reply from target: %s"), reply); | |
11981 | } | |
11982 | if (tpp) | |
11983 | *tpp = target_tracept; | |
e6e4e701 | 11984 | |
262e1174 | 11985 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11986 | return target_frameno; |
11987 | } | |
11988 | ||
11989 | static int | |
4011015b TT |
11990 | remote_get_trace_state_variable_value (struct target_ops *self, |
11991 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11992 | { |
11993 | struct remote_state *rs = get_remote_state (); | |
11994 | char *reply; | |
11995 | ULONGEST uval; | |
11996 | ||
e6e4e701 PA |
11997 | set_remote_traceframe (); |
11998 | ||
bba74b36 | 11999 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12000 | putpkt (rs->buf); |
12001 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12002 | if (reply && *reply) | |
12003 | { | |
12004 | if (*reply == 'V') | |
12005 | { | |
12006 | unpack_varlen_hex (reply + 1, &uval); | |
12007 | *val = (LONGEST) uval; | |
12008 | return 1; | |
12009 | } | |
12010 | } | |
12011 | return 0; | |
12012 | } | |
12013 | ||
00bf0b85 | 12014 | static int |
dc3decaf | 12015 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12016 | { |
12017 | struct remote_state *rs = get_remote_state (); | |
12018 | char *p, *reply; | |
12019 | ||
12020 | p = rs->buf; | |
12021 | strcpy (p, "QTSave:"); | |
12022 | p += strlen (p); | |
12023 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12024 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12025 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12026 | *p++ = '\0'; |
12027 | putpkt (rs->buf); | |
ad91cd99 | 12028 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12029 | if (*reply == '\0') |
ad91cd99 PA |
12030 | error (_("Target does not support this command.")); |
12031 | if (strcmp (reply, "OK") != 0) | |
12032 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12033 | return 0; |
12034 | } | |
12035 | ||
12036 | /* This is basically a memory transfer, but needs to be its own packet | |
12037 | because we don't know how the target actually organizes its trace | |
12038 | memory, plus we want to be able to ask for as much as possible, but | |
12039 | not be unhappy if we don't get as much as we ask for. */ | |
12040 | ||
12041 | static LONGEST | |
88ee6f45 TT |
12042 | remote_get_raw_trace_data (struct target_ops *self, |
12043 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12044 | { |
12045 | struct remote_state *rs = get_remote_state (); | |
12046 | char *reply; | |
12047 | char *p; | |
12048 | int rslt; | |
12049 | ||
12050 | p = rs->buf; | |
12051 | strcpy (p, "qTBuffer:"); | |
12052 | p += strlen (p); | |
12053 | p += hexnumstr (p, offset); | |
12054 | *p++ = ','; | |
12055 | p += hexnumstr (p, len); | |
12056 | *p++ = '\0'; | |
12057 | ||
12058 | putpkt (rs->buf); | |
12059 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12060 | if (reply && *reply) | |
12061 | { | |
12062 | /* 'l' by itself means we're at the end of the buffer and | |
12063 | there is nothing more to get. */ | |
12064 | if (*reply == 'l') | |
12065 | return 0; | |
12066 | ||
12067 | /* Convert the reply into binary. Limit the number of bytes to | |
12068 | convert according to our passed-in buffer size, rather than | |
12069 | what was returned in the packet; if the target is | |
12070 | unexpectedly generous and gives us a bigger reply than we | |
12071 | asked for, we don't want to crash. */ | |
12072 | rslt = hex2bin (target_buf, buf, len); | |
12073 | return rslt; | |
12074 | } | |
12075 | ||
12076 | /* Something went wrong, flag as an error. */ | |
12077 | return -1; | |
12078 | } | |
12079 | ||
35b1e5cc | 12080 | static void |
37b25738 | 12081 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12082 | { |
12083 | struct remote_state *rs = get_remote_state (); | |
12084 | ||
4082afcc | 12085 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12086 | { |
ad91cd99 PA |
12087 | char *reply; |
12088 | ||
bba74b36 | 12089 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12090 | putpkt (rs->buf); |
ad91cd99 PA |
12091 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12092 | if (*reply == '\0') | |
33da3f1c | 12093 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12094 | if (strcmp (reply, "OK") != 0) |
12095 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12096 | } |
12097 | else if (val) | |
12098 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12099 | } |
12100 | ||
dc146f7c VP |
12101 | static int |
12102 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12103 | { | |
12104 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12105 | |
fe978cb0 PA |
12106 | if (info && info->priv) |
12107 | return info->priv->core; | |
dc146f7c VP |
12108 | return -1; |
12109 | } | |
12110 | ||
4daf5ac0 | 12111 | static void |
736d5b1f | 12112 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12113 | { |
12114 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12115 | char *reply; |
4daf5ac0 | 12116 | |
bba74b36 | 12117 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12118 | putpkt (rs->buf); |
ad91cd99 PA |
12119 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12120 | if (*reply == '\0') | |
4daf5ac0 | 12121 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12122 | if (strcmp (reply, "OK") != 0) |
12123 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12124 | } |
12125 | ||
b3b9301e | 12126 | static struct traceframe_info * |
a893e81f | 12127 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12128 | { |
12129 | char *text; | |
12130 | ||
12131 | text = target_read_stralloc (¤t_target, | |
12132 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12133 | if (text != NULL) | |
12134 | { | |
12135 | struct traceframe_info *info; | |
12136 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12137 | ||
12138 | info = parse_traceframe_info (text); | |
12139 | do_cleanups (back_to); | |
12140 | return info; | |
12141 | } | |
12142 | ||
12143 | return NULL; | |
12144 | } | |
12145 | ||
405f8e94 SS |
12146 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12147 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12148 | if the packet is not supported, and 0 if the minimum instruction | |
12149 | length is unknown. */ | |
12150 | ||
12151 | static int | |
0e67620a | 12152 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12153 | { |
12154 | struct remote_state *rs = get_remote_state (); | |
12155 | char *reply; | |
12156 | ||
e886a173 PA |
12157 | /* If we're not debugging a process yet, the IPA can't be |
12158 | loaded. */ | |
12159 | if (!target_has_execution) | |
12160 | return 0; | |
12161 | ||
12162 | /* Make sure the remote is pointing at the right process. */ | |
12163 | set_general_process (); | |
12164 | ||
bba74b36 | 12165 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12166 | putpkt (rs->buf); |
12167 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12168 | if (*reply == '\0') | |
12169 | return -1; | |
12170 | else | |
12171 | { | |
12172 | ULONGEST min_insn_len; | |
12173 | ||
12174 | unpack_varlen_hex (reply, &min_insn_len); | |
12175 | ||
12176 | return (int) min_insn_len; | |
12177 | } | |
12178 | } | |
12179 | ||
f6f899bf | 12180 | static void |
4da384be | 12181 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12182 | { |
4082afcc | 12183 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12184 | { |
12185 | struct remote_state *rs = get_remote_state (); | |
12186 | char *buf = rs->buf; | |
12187 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12188 | enum packet_result result; | |
12189 | ||
12190 | gdb_assert (val >= 0 || val == -1); | |
12191 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12192 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12193 | if (val < 0) | |
12194 | { | |
12195 | *buf++ = '-'; | |
12196 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12197 | } | |
12198 | else | |
12199 | buf += hexnumstr (buf, (ULONGEST) val); | |
12200 | ||
12201 | putpkt (rs->buf); | |
12202 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12203 | result = packet_ok (rs->buf, | |
12204 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12205 | ||
12206 | if (result != PACKET_OK) | |
12207 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12208 | } | |
12209 | } | |
12210 | ||
f196051f | 12211 | static int |
d9e68a2c TT |
12212 | remote_set_trace_notes (struct target_ops *self, |
12213 | const char *user, const char *notes, | |
ca623f82 | 12214 | const char *stop_notes) |
f196051f SS |
12215 | { |
12216 | struct remote_state *rs = get_remote_state (); | |
12217 | char *reply; | |
12218 | char *buf = rs->buf; | |
12219 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12220 | int nbytes; | |
12221 | ||
12222 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12223 | if (user) | |
12224 | { | |
12225 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12226 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12227 | buf += 2 * nbytes; |
12228 | *buf++ = ';'; | |
12229 | } | |
12230 | if (notes) | |
12231 | { | |
12232 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12233 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12234 | buf += 2 * nbytes; |
12235 | *buf++ = ';'; | |
12236 | } | |
12237 | if (stop_notes) | |
12238 | { | |
12239 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12240 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12241 | buf += 2 * nbytes; |
12242 | *buf++ = ';'; | |
12243 | } | |
12244 | /* Ensure the buffer is terminated. */ | |
12245 | *buf = '\0'; | |
12246 | ||
12247 | putpkt (rs->buf); | |
12248 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12249 | if (*reply == '\0') | |
12250 | return 0; | |
12251 | ||
12252 | if (strcmp (reply, "OK") != 0) | |
12253 | error (_("Bogus reply from target: %s"), reply); | |
12254 | ||
12255 | return 1; | |
12256 | } | |
12257 | ||
d1feda86 | 12258 | static int |
2c152180 | 12259 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12260 | { |
4082afcc | 12261 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12262 | { |
12263 | struct remote_state *rs = get_remote_state (); | |
12264 | ||
12265 | /* If the stub supports QAgent. */ | |
bba74b36 | 12266 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12267 | putpkt (rs->buf); |
12268 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12269 | ||
12270 | if (strcmp (rs->buf, "OK") == 0) | |
12271 | { | |
12272 | use_agent = use; | |
12273 | return 1; | |
12274 | } | |
12275 | } | |
12276 | ||
12277 | return 0; | |
12278 | } | |
12279 | ||
12280 | static int | |
fe38f897 | 12281 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12282 | { |
4082afcc | 12283 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12284 | } |
12285 | ||
9accd112 MM |
12286 | struct btrace_target_info |
12287 | { | |
12288 | /* The ptid of the traced thread. */ | |
12289 | ptid_t ptid; | |
f4abbc16 MM |
12290 | |
12291 | /* The obtained branch trace configuration. */ | |
12292 | struct btrace_config conf; | |
9accd112 MM |
12293 | }; |
12294 | ||
f4abbc16 MM |
12295 | /* Reset our idea of our target's btrace configuration. */ |
12296 | ||
12297 | static void | |
12298 | remote_btrace_reset (void) | |
12299 | { | |
12300 | struct remote_state *rs = get_remote_state (); | |
12301 | ||
12302 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12303 | } | |
12304 | ||
9accd112 MM |
12305 | /* Check whether the target supports branch tracing. */ |
12306 | ||
12307 | static int | |
043c3577 | 12308 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12309 | { |
4082afcc | 12310 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12311 | return 0; |
4082afcc | 12312 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12313 | return 0; |
12314 | ||
043c3577 MM |
12315 | switch (format) |
12316 | { | |
12317 | case BTRACE_FORMAT_NONE: | |
12318 | return 0; | |
12319 | ||
12320 | case BTRACE_FORMAT_BTS: | |
12321 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12322 | |
12323 | case BTRACE_FORMAT_PT: | |
12324 | /* The trace is decoded on the host. Even if our target supports it, | |
12325 | we still need to have libipt to decode the trace. */ | |
12326 | #if defined (HAVE_LIBIPT) | |
12327 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12328 | #else /* !defined (HAVE_LIBIPT) */ | |
12329 | return 0; | |
12330 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12331 | } |
12332 | ||
12333 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12334 | } |
12335 | ||
f4abbc16 MM |
12336 | /* Synchronize the configuration with the target. */ |
12337 | ||
12338 | static void | |
12339 | btrace_sync_conf (const struct btrace_config *conf) | |
12340 | { | |
d33501a5 MM |
12341 | struct packet_config *packet; |
12342 | struct remote_state *rs; | |
12343 | char *buf, *pos, *endbuf; | |
12344 | ||
12345 | rs = get_remote_state (); | |
12346 | buf = rs->buf; | |
12347 | endbuf = buf + get_remote_packet_size (); | |
12348 | ||
12349 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12350 | if (packet_config_support (packet) == PACKET_ENABLE | |
12351 | && conf->bts.size != rs->btrace_config.bts.size) | |
12352 | { | |
12353 | pos = buf; | |
12354 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12355 | conf->bts.size); | |
12356 | ||
12357 | putpkt (buf); | |
12358 | getpkt (&buf, &rs->buf_size, 0); | |
12359 | ||
12360 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12361 | { | |
12362 | if (buf[0] == 'E' && buf[1] == '.') | |
12363 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12364 | else | |
12365 | error (_("Failed to configure the BTS buffer size.")); | |
12366 | } | |
12367 | ||
12368 | rs->btrace_config.bts.size = conf->bts.size; | |
12369 | } | |
b20a6524 MM |
12370 | |
12371 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12372 | if (packet_config_support (packet) == PACKET_ENABLE | |
12373 | && conf->pt.size != rs->btrace_config.pt.size) | |
12374 | { | |
12375 | pos = buf; | |
12376 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12377 | conf->pt.size); | |
12378 | ||
12379 | putpkt (buf); | |
12380 | getpkt (&buf, &rs->buf_size, 0); | |
12381 | ||
12382 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12383 | { | |
12384 | if (buf[0] == 'E' && buf[1] == '.') | |
12385 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12386 | else | |
12387 | error (_("Failed to configure the trace buffer size.")); | |
12388 | } | |
12389 | ||
12390 | rs->btrace_config.pt.size = conf->pt.size; | |
12391 | } | |
f4abbc16 MM |
12392 | } |
12393 | ||
12394 | /* Read the current thread's btrace configuration from the target and | |
12395 | store it into CONF. */ | |
12396 | ||
12397 | static void | |
12398 | btrace_read_config (struct btrace_config *conf) | |
12399 | { | |
12400 | char *xml; | |
12401 | ||
12402 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12403 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12404 | if (xml != NULL) |
12405 | { | |
12406 | struct cleanup *cleanup; | |
12407 | ||
12408 | cleanup = make_cleanup (xfree, xml); | |
12409 | parse_xml_btrace_conf (conf, xml); | |
12410 | do_cleanups (cleanup); | |
12411 | } | |
12412 | } | |
12413 | ||
9accd112 MM |
12414 | /* Enable branch tracing. */ |
12415 | ||
12416 | static struct btrace_target_info * | |
f4abbc16 MM |
12417 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12418 | const struct btrace_config *conf) | |
9accd112 MM |
12419 | { |
12420 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12421 | struct packet_config *packet = NULL; |
9accd112 MM |
12422 | struct remote_state *rs = get_remote_state (); |
12423 | char *buf = rs->buf; | |
12424 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12425 | ||
b20a6524 MM |
12426 | switch (conf->format) |
12427 | { | |
12428 | case BTRACE_FORMAT_BTS: | |
12429 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12430 | break; | |
12431 | ||
12432 | case BTRACE_FORMAT_PT: | |
12433 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12434 | break; | |
12435 | } | |
12436 | ||
12437 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12438 | error (_("Target does not support branch tracing.")); |
12439 | ||
f4abbc16 MM |
12440 | btrace_sync_conf (conf); |
12441 | ||
9accd112 MM |
12442 | set_general_thread (ptid); |
12443 | ||
12444 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12445 | putpkt (rs->buf); | |
12446 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12447 | ||
12448 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12449 | { | |
12450 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12451 | error (_("Could not enable branch tracing for %s: %s"), | |
12452 | target_pid_to_str (ptid), rs->buf + 2); | |
12453 | else | |
12454 | error (_("Could not enable branch tracing for %s."), | |
12455 | target_pid_to_str (ptid)); | |
12456 | } | |
12457 | ||
8d749320 | 12458 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12459 | tinfo->ptid = ptid; |
12460 | ||
f4abbc16 MM |
12461 | /* If we fail to read the configuration, we lose some information, but the |
12462 | tracing itself is not impacted. */ | |
492d29ea PA |
12463 | TRY |
12464 | { | |
12465 | btrace_read_config (&tinfo->conf); | |
12466 | } | |
12467 | CATCH (err, RETURN_MASK_ERROR) | |
12468 | { | |
12469 | if (err.message != NULL) | |
12470 | warning ("%s", err.message); | |
12471 | } | |
12472 | END_CATCH | |
f4abbc16 | 12473 | |
9accd112 MM |
12474 | return tinfo; |
12475 | } | |
12476 | ||
12477 | /* Disable branch tracing. */ | |
12478 | ||
12479 | static void | |
25e95349 TT |
12480 | remote_disable_btrace (struct target_ops *self, |
12481 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12482 | { |
12483 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12484 | struct remote_state *rs = get_remote_state (); | |
12485 | char *buf = rs->buf; | |
12486 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12487 | ||
4082afcc | 12488 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12489 | error (_("Target does not support branch tracing.")); |
12490 | ||
12491 | set_general_thread (tinfo->ptid); | |
12492 | ||
12493 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12494 | putpkt (rs->buf); | |
12495 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12496 | ||
12497 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12498 | { | |
12499 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12500 | error (_("Could not disable branch tracing for %s: %s"), | |
12501 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12502 | else | |
12503 | error (_("Could not disable branch tracing for %s."), | |
12504 | target_pid_to_str (tinfo->ptid)); | |
12505 | } | |
12506 | ||
12507 | xfree (tinfo); | |
12508 | } | |
12509 | ||
12510 | /* Teardown branch tracing. */ | |
12511 | ||
12512 | static void | |
1777056d TT |
12513 | remote_teardown_btrace (struct target_ops *self, |
12514 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12515 | { |
12516 | /* We must not talk to the target during teardown. */ | |
12517 | xfree (tinfo); | |
12518 | } | |
12519 | ||
12520 | /* Read the branch trace. */ | |
12521 | ||
969c39fb | 12522 | static enum btrace_error |
39c49f83 | 12523 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12524 | struct btrace_data *btrace, |
969c39fb | 12525 | struct btrace_target_info *tinfo, |
9accd112 MM |
12526 | enum btrace_read_type type) |
12527 | { | |
12528 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12529 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12530 | struct cleanup *cleanup; |
9accd112 MM |
12531 | const char *annex; |
12532 | char *xml; | |
12533 | ||
4082afcc | 12534 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12535 | error (_("Target does not support branch tracing.")); |
12536 | ||
12537 | #if !defined(HAVE_LIBEXPAT) | |
12538 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12539 | #endif | |
12540 | ||
12541 | switch (type) | |
12542 | { | |
864089d2 | 12543 | case BTRACE_READ_ALL: |
9accd112 MM |
12544 | annex = "all"; |
12545 | break; | |
864089d2 | 12546 | case BTRACE_READ_NEW: |
9accd112 MM |
12547 | annex = "new"; |
12548 | break; | |
969c39fb MM |
12549 | case BTRACE_READ_DELTA: |
12550 | annex = "delta"; | |
12551 | break; | |
9accd112 MM |
12552 | default: |
12553 | internal_error (__FILE__, __LINE__, | |
12554 | _("Bad branch tracing read type: %u."), | |
12555 | (unsigned int) type); | |
12556 | } | |
12557 | ||
12558 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12559 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12560 | if (xml == NULL) |
12561 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12562 | |
969c39fb | 12563 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12564 | parse_xml_btrace (btrace, xml); |
969c39fb | 12565 | do_cleanups (cleanup); |
9accd112 | 12566 | |
969c39fb | 12567 | return BTRACE_ERR_NONE; |
9accd112 MM |
12568 | } |
12569 | ||
f4abbc16 MM |
12570 | static const struct btrace_config * |
12571 | remote_btrace_conf (struct target_ops *self, | |
12572 | const struct btrace_target_info *tinfo) | |
12573 | { | |
12574 | return &tinfo->conf; | |
12575 | } | |
12576 | ||
ced63ec0 | 12577 | static int |
5436ff03 | 12578 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12579 | { |
4082afcc PA |
12580 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12581 | == PACKET_ENABLE); | |
ced63ec0 GB |
12582 | } |
12583 | ||
9dd130a0 TT |
12584 | /* Implementation of to_load. */ |
12585 | ||
12586 | static void | |
9cbe5fff | 12587 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12588 | { |
12589 | generic_load (name, from_tty); | |
12590 | } | |
12591 | ||
c78fa86a GB |
12592 | /* Accepts an integer PID; returns a string representing a file that |
12593 | can be opened on the remote side to get the symbols for the child | |
12594 | process. Returns NULL if the operation is not supported. */ | |
12595 | ||
12596 | static char * | |
12597 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12598 | { | |
12599 | static char *filename = NULL; | |
835205d0 GB |
12600 | struct inferior *inf; |
12601 | char *annex = NULL; | |
c78fa86a GB |
12602 | |
12603 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12604 | return NULL; | |
12605 | ||
12606 | if (filename != NULL) | |
12607 | xfree (filename); | |
12608 | ||
835205d0 GB |
12609 | inf = find_inferior_pid (pid); |
12610 | if (inf == NULL) | |
12611 | internal_error (__FILE__, __LINE__, | |
12612 | _("not currently attached to process %d"), pid); | |
12613 | ||
12614 | if (!inf->fake_pid_p) | |
12615 | { | |
12616 | const int annex_size = 9; | |
12617 | ||
12618 | annex = alloca (annex_size); | |
12619 | xsnprintf (annex, annex_size, "%x", pid); | |
12620 | } | |
12621 | ||
c78fa86a GB |
12622 | filename = target_read_stralloc (¤t_target, |
12623 | TARGET_OBJECT_EXEC_FILE, annex); | |
12624 | ||
12625 | return filename; | |
12626 | } | |
12627 | ||
c906108c | 12628 | static void |
fba45db2 | 12629 | init_remote_ops (void) |
c906108c | 12630 | { |
c5aa993b | 12631 | remote_ops.to_shortname = "remote"; |
c906108c | 12632 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12633 | remote_ops.to_doc = |
c906108c | 12634 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12635 | Specify the serial device it is connected to\n\ |
12636 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12637 | remote_ops.to_open = remote_open; |
12638 | remote_ops.to_close = remote_close; | |
c906108c | 12639 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12640 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12641 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12642 | remote_ops.to_wait = remote_wait; |
12643 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12644 | remote_ops.to_store_registers = remote_store_registers; | |
12645 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12646 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12647 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12648 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12649 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12650 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12651 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12652 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12653 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12654 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12655 | remote_ops.to_watchpoint_addr_within_range = |
12656 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12657 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12658 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12659 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12660 | remote_ops.to_region_ok_for_hw_watchpoint |
12661 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12662 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12663 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12664 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12665 | remote_ops.to_load = remote_load; |
c906108c | 12666 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12667 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12668 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12669 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 12670 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12671 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12672 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12673 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12674 | remote_ops.to_stop = remote_stop; |
bfedc46a | 12675 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 12676 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 12677 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12678 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12679 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12680 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12681 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12682 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12683 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12684 | remote_ops.to_has_memory = default_child_has_memory; | |
12685 | remote_ops.to_has_stack = default_child_has_stack; | |
12686 | remote_ops.to_has_registers = default_child_has_registers; | |
12687 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12688 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12689 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12690 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12691 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12692 | remote_ops.to_flash_erase = remote_flash_erase; |
12693 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12694 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12695 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12696 | remote_ops.to_can_async_p = remote_can_async_p; |
12697 | remote_ops.to_is_async_p = remote_is_async_p; | |
12698 | remote_ops.to_async = remote_async; | |
75c99385 PA |
12699 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12700 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12701 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12702 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
12703 | remote_ops.to_supports_disable_randomization |
12704 | = remote_supports_disable_randomization; | |
4bd7dc42 | 12705 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
12706 | remote_ops.to_fileio_open = remote_hostio_open; |
12707 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12708 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 12709 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
12710 | remote_ops.to_fileio_close = remote_hostio_close; |
12711 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 12712 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 12713 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 12714 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 12715 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 12716 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
12717 | remote_ops.to_trace_init = remote_trace_init; |
12718 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 12719 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
12720 | remote_ops.to_download_trace_state_variable |
12721 | = remote_download_trace_state_variable; | |
d248b706 KY |
12722 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12723 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
12724 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12725 | remote_ops.to_trace_start = remote_trace_start; | |
12726 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 12727 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
12728 | remote_ops.to_trace_stop = remote_trace_stop; |
12729 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
12730 | remote_ops.to_get_trace_state_variable_value |
12731 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
12732 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12733 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
12734 | remote_ops.to_upload_trace_state_variables |
12735 | = remote_upload_trace_state_variables; | |
00bf0b85 | 12736 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 12737 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 12738 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 12739 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 12740 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 12741 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 12742 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 12743 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 12744 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 12745 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
12746 | remote_ops.to_static_tracepoint_marker_at |
12747 | = remote_static_tracepoint_marker_at; | |
12748 | remote_ops.to_static_tracepoint_markers_by_strid | |
12749 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 12750 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
12751 | remote_ops.to_use_agent = remote_use_agent; |
12752 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
12753 | remote_ops.to_supports_btrace = remote_supports_btrace; |
12754 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12755 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12756 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12757 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 12758 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
12759 | remote_ops.to_augmented_libraries_svr4_read = |
12760 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
12761 | } |
12762 | ||
12763 | /* Set up the extended remote vector by making a copy of the standard | |
12764 | remote vector and adding to it. */ | |
12765 | ||
12766 | static void | |
fba45db2 | 12767 | init_extended_remote_ops (void) |
c906108c SS |
12768 | { |
12769 | extended_remote_ops = remote_ops; | |
12770 | ||
0f71a2f6 | 12771 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 12772 | extended_remote_ops.to_longname = |
c906108c | 12773 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 12774 | extended_remote_ops.to_doc = |
c906108c | 12775 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
12776 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
12777 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
12778 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
12779 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
12780 | extended_remote_ops.to_detach = extended_remote_detach; |
12781 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 12782 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 12783 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
12784 | extended_remote_ops.to_supports_disable_randomization |
12785 | = extended_remote_supports_disable_randomization; | |
de0d863e | 12786 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
94585166 | 12787 | extended_remote_ops.to_follow_exec = remote_follow_exec; |
cbb8991c DB |
12788 | extended_remote_ops.to_insert_fork_catchpoint |
12789 | = remote_insert_fork_catchpoint; | |
12790 | extended_remote_ops.to_remove_fork_catchpoint | |
12791 | = remote_remove_fork_catchpoint; | |
12792 | extended_remote_ops.to_insert_vfork_catchpoint | |
12793 | = remote_insert_vfork_catchpoint; | |
12794 | extended_remote_ops.to_remove_vfork_catchpoint | |
12795 | = remote_remove_vfork_catchpoint; | |
0f71a2f6 JM |
12796 | } |
12797 | ||
6426a772 | 12798 | static int |
6a109b6b | 12799 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 12800 | { |
5d93a237 TT |
12801 | struct remote_state *rs = get_remote_state (); |
12802 | ||
c6ebd6cf | 12803 | if (!target_async_permitted) |
75c99385 PA |
12804 | /* We only enable async when the user specifically asks for it. */ |
12805 | return 0; | |
12806 | ||
23860348 | 12807 | /* We're async whenever the serial device is. */ |
5d93a237 | 12808 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
12809 | } |
12810 | ||
12811 | static int | |
6a109b6b | 12812 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 12813 | { |
5d93a237 TT |
12814 | struct remote_state *rs = get_remote_state (); |
12815 | ||
c6ebd6cf | 12816 | if (!target_async_permitted) |
75c99385 PA |
12817 | /* We only enable async when the user specifically asks for it. */ |
12818 | return 0; | |
12819 | ||
23860348 | 12820 | /* We're async whenever the serial device is. */ |
5d93a237 | 12821 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
12822 | } |
12823 | ||
2acceee2 JM |
12824 | /* Pass the SERIAL event on and up to the client. One day this code |
12825 | will be able to delay notifying the client of an event until the | |
23860348 | 12826 | point where an entire packet has been received. */ |
2acceee2 | 12827 | |
2acceee2 JM |
12828 | static serial_event_ftype remote_async_serial_handler; |
12829 | ||
6426a772 | 12830 | static void |
819cc324 | 12831 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 12832 | { |
88b496c3 TT |
12833 | struct remote_state *rs = context; |
12834 | ||
2acceee2 JM |
12835 | /* Don't propogate error information up to the client. Instead let |
12836 | the client find out about the error by querying the target. */ | |
6a3753b3 | 12837 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
12838 | } |
12839 | ||
74531fed PA |
12840 | static void |
12841 | remote_async_inferior_event_handler (gdb_client_data data) | |
12842 | { | |
12843 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12844 | } | |
12845 | ||
2acceee2 | 12846 | static void |
6a3753b3 | 12847 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 12848 | { |
5d93a237 TT |
12849 | struct remote_state *rs = get_remote_state (); |
12850 | ||
6a3753b3 | 12851 | if (enable) |
2acceee2 | 12852 | { |
88b496c3 | 12853 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
12854 | |
12855 | /* If there are pending events in the stop reply queue tell the | |
12856 | event loop to process them. */ | |
12857 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12858 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
12859 | } |
12860 | else | |
b7d2e916 PA |
12861 | { |
12862 | serial_async (rs->remote_desc, NULL, NULL); | |
12863 | clear_async_event_handler (remote_async_inferior_event_token); | |
12864 | } | |
6426a772 JM |
12865 | } |
12866 | ||
5a2468f5 | 12867 | static void |
c2d11a7d | 12868 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 12869 | { |
635c7e8a | 12870 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
12871 | } |
12872 | ||
d471ea57 AC |
12873 | static void |
12874 | show_remote_cmd (char *args, int from_tty) | |
12875 | { | |
37a105a1 | 12876 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 12877 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
12878 | struct cleanup *showlist_chain; |
12879 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12880 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12881 | |
12882 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12883 | for (; list != NULL; list = list->next) | |
12884 | if (strcmp (list->name, "Z-packet") == 0) | |
12885 | continue; | |
427c3a89 DJ |
12886 | else if (list->type == not_set_cmd) |
12887 | /* Alias commands are exactly like the original, except they | |
12888 | don't have the normal type. */ | |
12889 | continue; | |
12890 | else | |
37a105a1 DJ |
12891 | { |
12892 | struct cleanup *option_chain | |
12893 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12894 | |
37a105a1 DJ |
12895 | ui_out_field_string (uiout, "name", list->name); |
12896 | ui_out_text (uiout, ": "); | |
427c3a89 | 12897 | if (list->type == show_cmd) |
5b9afe8a | 12898 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12899 | else |
12900 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12901 | /* Close the tuple. */ |
12902 | do_cleanups (option_chain); | |
12903 | } | |
427c3a89 DJ |
12904 | |
12905 | /* Close the tuple. */ | |
12906 | do_cleanups (showlist_chain); | |
d471ea57 | 12907 | } |
5a2468f5 | 12908 | |
0f71a2f6 | 12909 | |
23860348 | 12910 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12911 | static void |
12912 | remote_new_objfile (struct objfile *objfile) | |
12913 | { | |
5d93a237 TT |
12914 | struct remote_state *rs = get_remote_state (); |
12915 | ||
12916 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12917 | remote_check_symbols (); |
dc8acb97 MS |
12918 | } |
12919 | ||
00bf0b85 SS |
12920 | /* Pull all the tracepoints defined on the target and create local |
12921 | data structures representing them. We don't want to create real | |
12922 | tracepoints yet, we don't want to mess up the user's existing | |
12923 | collection. */ | |
12924 | ||
12925 | static int | |
ab6617cc | 12926 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12927 | { |
00bf0b85 SS |
12928 | struct remote_state *rs = get_remote_state (); |
12929 | char *p; | |
d5551862 | 12930 | |
00bf0b85 SS |
12931 | /* Ask for a first packet of tracepoint definition. */ |
12932 | putpkt ("qTfP"); | |
12933 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12934 | p = rs->buf; | |
12935 | while (*p && *p != 'l') | |
d5551862 | 12936 | { |
00bf0b85 SS |
12937 | parse_tracepoint_definition (p, utpp); |
12938 | /* Ask for another packet of tracepoint definition. */ | |
12939 | putpkt ("qTsP"); | |
12940 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12941 | p = rs->buf; | |
d5551862 | 12942 | } |
00bf0b85 | 12943 | return 0; |
d5551862 SS |
12944 | } |
12945 | ||
00bf0b85 | 12946 | static int |
181e3713 TT |
12947 | remote_upload_trace_state_variables (struct target_ops *self, |
12948 | struct uploaded_tsv **utsvp) | |
d5551862 | 12949 | { |
00bf0b85 | 12950 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12951 | char *p; |
d5551862 | 12952 | |
00bf0b85 SS |
12953 | /* Ask for a first packet of variable definition. */ |
12954 | putpkt ("qTfV"); | |
d5551862 SS |
12955 | getpkt (&rs->buf, &rs->buf_size, 0); |
12956 | p = rs->buf; | |
00bf0b85 | 12957 | while (*p && *p != 'l') |
d5551862 | 12958 | { |
00bf0b85 SS |
12959 | parse_tsv_definition (p, utsvp); |
12960 | /* Ask for another packet of variable definition. */ | |
12961 | putpkt ("qTsV"); | |
d5551862 SS |
12962 | getpkt (&rs->buf, &rs->buf_size, 0); |
12963 | p = rs->buf; | |
12964 | } | |
00bf0b85 | 12965 | return 0; |
d5551862 SS |
12966 | } |
12967 | ||
c1e36e3e PA |
12968 | /* The "set/show range-stepping" show hook. */ |
12969 | ||
12970 | static void | |
12971 | show_range_stepping (struct ui_file *file, int from_tty, | |
12972 | struct cmd_list_element *c, | |
12973 | const char *value) | |
12974 | { | |
12975 | fprintf_filtered (file, | |
12976 | _("Debugger's willingness to use range stepping " | |
12977 | "is %s.\n"), value); | |
12978 | } | |
12979 | ||
12980 | /* The "set/show range-stepping" set hook. */ | |
12981 | ||
12982 | static void | |
12983 | set_range_stepping (char *ignore_args, int from_tty, | |
12984 | struct cmd_list_element *c) | |
12985 | { | |
5d93a237 TT |
12986 | struct remote_state *rs = get_remote_state (); |
12987 | ||
c1e36e3e PA |
12988 | /* Whene enabling, check whether range stepping is actually |
12989 | supported by the target, and warn if not. */ | |
12990 | if (use_range_stepping) | |
12991 | { | |
5d93a237 | 12992 | if (rs->remote_desc != NULL) |
c1e36e3e | 12993 | { |
4082afcc | 12994 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12995 | remote_vcont_probe (rs); |
12996 | ||
4082afcc | 12997 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12998 | && rs->supports_vCont.r) |
12999 | return; | |
13000 | } | |
13001 | ||
13002 | warning (_("Range stepping is not supported by the current target")); | |
13003 | } | |
13004 | } | |
13005 | ||
c906108c | 13006 | void |
fba45db2 | 13007 | _initialize_remote (void) |
c906108c | 13008 | { |
ea9c271d | 13009 | struct remote_state *rs; |
9a7071a8 | 13010 | struct cmd_list_element *cmd; |
6f937416 | 13011 | const char *cmd_name; |
ea9c271d | 13012 | |
0f71a2f6 | 13013 | /* architecture specific data */ |
2bc416ba | 13014 | remote_gdbarch_data_handle = |
23860348 | 13015 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13016 | remote_g_packet_data_handle = |
13017 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13018 | |
94585166 DB |
13019 | remote_pspace_data |
13020 | = register_program_space_data_with_cleanup (NULL, | |
13021 | remote_pspace_data_cleanup); | |
13022 | ||
ea9c271d DJ |
13023 | /* Initialize the per-target state. At the moment there is only one |
13024 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13025 | time. */ |
13026 | remote_state = new_remote_state (); | |
ea9c271d | 13027 | |
c906108c SS |
13028 | init_remote_ops (); |
13029 | add_target (&remote_ops); | |
13030 | ||
13031 | init_extended_remote_ops (); | |
13032 | add_target (&extended_remote_ops); | |
cce74817 | 13033 | |
dc8acb97 | 13034 | /* Hook into new objfile notification. */ |
06d3b283 | 13035 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13036 | /* We're no longer interested in notification events of an inferior |
13037 | when it exits. */ | |
13038 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13039 | |
b803fb0f | 13040 | /* Set up signal handlers. */ |
934b9bac | 13041 | async_sigint_remote_token = |
b803fb0f | 13042 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 13043 | async_sigint_remote_twice_token = |
6d549500 | 13044 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 13045 | |
c906108c SS |
13046 | #if 0 |
13047 | init_remote_threadtests (); | |
13048 | #endif | |
13049 | ||
722247f1 | 13050 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13051 | /* set/show remote ... */ |
d471ea57 | 13052 | |
1bedd215 | 13053 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13054 | Remote protocol specific variables\n\ |
13055 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13056 | the packets being used"), |
cff3e48b | 13057 | &remote_set_cmdlist, "set remote ", |
23860348 | 13058 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13059 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13060 | Remote protocol specific variables\n\ |
13061 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13062 | the packets being used"), |
cff3e48b | 13063 | &remote_show_cmdlist, "show remote ", |
23860348 | 13064 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13065 | |
1a966eab AC |
13066 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13067 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13068 | Argument is a single section name (default: all loaded sections).\n\ |
13069 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13070 | &cmdlist); |
13071 | ||
1a966eab AC |
13072 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13073 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13074 | maintenance packet TEXT\n\ |
13075 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13076 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13077 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13078 | terminating `#' character and checksum."), |
c906108c SS |
13079 | &maintenancelist); |
13080 | ||
7915a72c AC |
13081 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13082 | Set whether to send break if interrupted."), _("\ | |
13083 | Show whether to send break if interrupted."), _("\ | |
13084 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13085 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13086 | &setlist, &showlist); |
9a7071a8 JB |
13087 | cmd_name = "remotebreak"; |
13088 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13089 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13090 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13091 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13092 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13093 | ||
13094 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13095 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13096 | _("\ | |
9a7071a8 JB |
13097 | Set interrupt sequence to remote target."), _("\ |
13098 | Show interrupt sequence to remote target."), _("\ | |
13099 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13100 | NULL, show_interrupt_sequence, | |
13101 | &remote_set_cmdlist, | |
13102 | &remote_show_cmdlist); | |
13103 | ||
13104 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13105 | &interrupt_on_connect, _("\ | |
13106 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13107 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13108 | If set, interrupt sequence is sent to remote target."), | |
13109 | NULL, NULL, | |
13110 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13111 | |
23860348 | 13112 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13113 | |
1a966eab AC |
13114 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13115 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13116 | &setlist); |
1a966eab AC |
13117 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13118 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13119 | &showlist); |
13120 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13121 | set_memory_write_packet_size, _("\ |
13122 | Set the maximum number of bytes per memory-write packet.\n\ | |
13123 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13124 | default packet size. The actual limit is further reduced\n\ | |
13125 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13126 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13127 | &remote_set_cmdlist); |
13128 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13129 | set_memory_read_packet_size, _("\ |
13130 | Set the maximum number of bytes per memory-read packet.\n\ | |
13131 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13132 | default packet size. The actual limit is further reduced\n\ | |
13133 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13134 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13135 | &remote_set_cmdlist); |
13136 | add_cmd ("memory-write-packet-size", no_class, | |
13137 | show_memory_write_packet_size, | |
1a966eab | 13138 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13139 | &remote_show_cmdlist); |
13140 | add_cmd ("memory-read-packet-size", no_class, | |
13141 | show_memory_read_packet_size, | |
1a966eab | 13142 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13143 | &remote_show_cmdlist); |
c906108c | 13144 | |
b3f42336 | 13145 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13146 | &remote_hw_watchpoint_limit, _("\ |
13147 | Set the maximum number of target hardware watchpoints."), _("\ | |
13148 | Show the maximum number of target hardware watchpoints."), _("\ | |
13149 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13150 | NULL, NULL, /* FIXME: i18n: The maximum |
13151 | number of target hardware | |
13152 | watchpoints is %s. */ | |
b3f42336 | 13153 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13154 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13155 | &remote_hw_watchpoint_length_limit, _("\ | |
13156 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13157 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13158 | Specify a negative limit for unlimited."), | |
13159 | NULL, NULL, /* FIXME: i18n: The maximum | |
13160 | length (in bytes) of a target | |
13161 | hardware watchpoint is %s. */ | |
13162 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13163 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13164 | &remote_hw_breakpoint_limit, _("\ |
13165 | Set the maximum number of target hardware breakpoints."), _("\ | |
13166 | Show the maximum number of target hardware breakpoints."), _("\ | |
13167 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13168 | NULL, NULL, /* FIXME: i18n: The maximum |
13169 | number of target hardware | |
13170 | breakpoints is %s. */ | |
b3f42336 | 13171 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13172 | |
1b493192 PA |
13173 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13174 | &remote_address_size, _("\ | |
4d28ad1e AC |
13175 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13176 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13177 | NULL, |
13178 | NULL, /* FIXME: i18n: */ | |
13179 | &setlist, &showlist); | |
c906108c | 13180 | |
ca4f7f8b PA |
13181 | init_all_packet_configs (); |
13182 | ||
444abaca | 13183 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13184 | "X", "binary-download", 1); |
0f71a2f6 | 13185 | |
444abaca | 13186 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13187 | "vCont", "verbose-resume", 0); |
506fb367 | 13188 | |
89be2091 DJ |
13189 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13190 | "QPassSignals", "pass-signals", 0); | |
13191 | ||
9b224c5e PA |
13192 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13193 | "QProgramSignals", "program-signals", 0); | |
13194 | ||
444abaca | 13195 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13196 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13197 | |
444abaca | 13198 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13199 | "P", "set-register", 1); |
d471ea57 | 13200 | |
444abaca | 13201 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13202 | "p", "fetch-register", 1); |
b96ec7ac | 13203 | |
444abaca | 13204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13205 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13206 | |
444abaca | 13207 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13208 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13209 | |
444abaca | 13210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13211 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13212 | |
444abaca | 13213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13214 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13215 | |
444abaca | 13216 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13217 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13218 | |
0876f84a DJ |
13219 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13220 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13221 | |
c78fa86a GB |
13222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13223 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13224 | ||
23181151 DJ |
13225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13226 | "qXfer:features:read", "target-features", 0); | |
13227 | ||
cfa9d6d9 DJ |
13228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13229 | "qXfer:libraries:read", "library-info", 0); | |
13230 | ||
2268b414 JK |
13231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13232 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13233 | ||
fd79ecee DJ |
13234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13235 | "qXfer:memory-map:read", "memory-map", 0); | |
13236 | ||
0e7f50da UW |
13237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13238 | "qXfer:spu:read", "read-spu-object", 0); | |
13239 | ||
13240 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13241 | "qXfer:spu:write", "write-spu-object", 0); | |
13242 | ||
07e059b5 VP |
13243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13244 | "qXfer:osdata:read", "osdata", 0); | |
13245 | ||
dc146f7c VP |
13246 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13247 | "qXfer:threads:read", "threads", 0); | |
13248 | ||
4aa995e1 PA |
13249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13250 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13251 | ||
13252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13253 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13254 | ||
b3b9301e PA |
13255 | add_packet_config_cmd |
13256 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13257 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13258 | |
169081d0 TG |
13259 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13260 | "qXfer:uib:read", "unwind-info-block", 0); | |
13261 | ||
444abaca | 13262 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13263 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13264 | 0); |
13265 | ||
711e434b PM |
13266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13267 | "qGetTIBAddr", "get-thread-information-block-address", | |
13268 | 0); | |
13269 | ||
40ab02ce MS |
13270 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13271 | "bc", "reverse-continue", 0); | |
13272 | ||
13273 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13274 | "bs", "reverse-step", 0); | |
13275 | ||
be2a5f71 DJ |
13276 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13277 | "qSupported", "supported-packets", 0); | |
13278 | ||
08388c79 DE |
13279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13280 | "qSearch:memory", "search-memory", 0); | |
13281 | ||
bd3eecc3 PA |
13282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13283 | "qTStatus", "trace-status", 0); | |
13284 | ||
15a201c8 GB |
13285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13286 | "vFile:setfs", "hostio-setfs", 0); | |
13287 | ||
a6b151f1 DJ |
13288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13289 | "vFile:open", "hostio-open", 0); | |
13290 | ||
13291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13292 | "vFile:pread", "hostio-pread", 0); | |
13293 | ||
13294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13295 | "vFile:pwrite", "hostio-pwrite", 0); | |
13296 | ||
13297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13298 | "vFile:close", "hostio-close", 0); | |
13299 | ||
13300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13301 | "vFile:unlink", "hostio-unlink", 0); | |
13302 | ||
b9e7b9c3 UW |
13303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13304 | "vFile:readlink", "hostio-readlink", 0); | |
13305 | ||
0a93529c GB |
13306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13307 | "vFile:fstat", "hostio-fstat", 0); | |
13308 | ||
2d717e4f DJ |
13309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13310 | "vAttach", "attach", 0); | |
13311 | ||
13312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13313 | "vRun", "run", 0); | |
13314 | ||
a6f3e723 SL |
13315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13316 | "QStartNoAckMode", "noack", 0); | |
13317 | ||
82f73884 PA |
13318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13319 | "vKill", "kill", 0); | |
13320 | ||
0b16c5cf PA |
13321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13322 | "qAttached", "query-attached", 0); | |
13323 | ||
782b2b07 | 13324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13325 | "ConditionalTracepoints", |
13326 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13327 | |
13328 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13329 | "ConditionalBreakpoints", | |
13330 | "conditional-breakpoints", 0); | |
13331 | ||
d3ce09f5 SS |
13332 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13333 | "BreakpointCommands", | |
13334 | "breakpoint-commands", 0); | |
13335 | ||
7a697b8d SS |
13336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13337 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13338 | |
409873ef SS |
13339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13340 | "TracepointSource", "TracepointSource", 0); | |
13341 | ||
d914c394 SS |
13342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13343 | "QAllow", "allow", 0); | |
13344 | ||
0fb4aa4b PA |
13345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13346 | "StaticTracepoints", "static-tracepoints", 0); | |
13347 | ||
1e4d1764 YQ |
13348 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13349 | "InstallInTrace", "install-in-trace", 0); | |
13350 | ||
0fb4aa4b PA |
13351 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13352 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13353 | ||
78d85199 YQ |
13354 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13355 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13356 | ||
03583c20 UW |
13357 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13358 | "QDisableRandomization", "disable-randomization", 0); | |
13359 | ||
d1feda86 YQ |
13360 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13361 | "QAgent", "agent", 0); | |
13362 | ||
f6f899bf HAQ |
13363 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13364 | "QTBuffer:size", "trace-buffer-size", 0); | |
13365 | ||
9accd112 MM |
13366 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13367 | "Qbtrace:off", "disable-btrace", 0); | |
13368 | ||
13369 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13370 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13371 | ||
13372 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13373 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13374 | |
13375 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13376 | "qXfer:btrace", "read-btrace", 0); | |
13377 | ||
f4abbc16 MM |
13378 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13379 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13380 | ||
d33501a5 MM |
13381 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13382 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13383 | ||
73b8c1fd PA |
13384 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13385 | "multiprocess-feature", "multiprocess-feature", 0); | |
13386 | ||
f7e6eed5 PA |
13387 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13388 | "swbreak-feature", "swbreak-feature", 0); | |
13389 | ||
13390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13391 | "hwbreak-feature", "hwbreak-feature", 0); | |
13392 | ||
89245bc0 DB |
13393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13394 | "fork-event-feature", "fork-event-feature", 0); | |
13395 | ||
13396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13397 | "vfork-event-feature", "vfork-event-feature", 0); | |
13398 | ||
b20a6524 MM |
13399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13400 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13401 | ||
94585166 DB |
13402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13403 | "exec-event-feature", "exec-event-feature", 0); | |
13404 | ||
0b736949 DB |
13405 | /* Assert that we've registered "set remote foo-packet" commands |
13406 | for all packet configs. */ | |
ca4f7f8b PA |
13407 | { |
13408 | int i; | |
13409 | ||
13410 | for (i = 0; i < PACKET_MAX; i++) | |
13411 | { | |
13412 | /* Ideally all configs would have a command associated. Some | |
13413 | still don't though. */ | |
13414 | int excepted; | |
13415 | ||
13416 | switch (i) | |
13417 | { | |
13418 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13419 | case PACKET_EnableDisableTracepoints_feature: |
13420 | case PACKET_tracenz_feature: | |
13421 | case PACKET_DisconnectedTracing_feature: | |
13422 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13423 | case PACKET_qCRC: |
13424 | /* Additions to this list need to be well justified: | |
13425 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13426 | excepted = 1; |
13427 | break; | |
13428 | default: | |
13429 | excepted = 0; | |
13430 | break; | |
13431 | } | |
13432 | ||
13433 | /* This catches both forgetting to add a config command, and | |
13434 | forgetting to remove a packet from the exception list. */ | |
13435 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13436 | } | |
13437 | } | |
13438 | ||
37a105a1 DJ |
13439 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13440 | Z sub-packet has its own set and show commands, but users may | |
13441 | have sets to this variable in their .gdbinit files (or in their | |
13442 | documentation). */ | |
e9e68a56 | 13443 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13444 | &remote_Z_packet_detect, _("\ |
13445 | Set use of remote protocol `Z' packets"), _("\ | |
13446 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13447 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13448 | packets."), |
e9e68a56 | 13449 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13450 | show_remote_protocol_Z_packet_cmd, |
13451 | /* FIXME: i18n: Use of remote protocol | |
13452 | `Z' packets is %s. */ | |
e9e68a56 | 13453 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13454 | |
a6b151f1 DJ |
13455 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13456 | Manipulate files on the remote system\n\ | |
13457 | Transfer files to and from the remote target system."), | |
13458 | &remote_cmdlist, "remote ", | |
13459 | 0 /* allow-unknown */, &cmdlist); | |
13460 | ||
13461 | add_cmd ("put", class_files, remote_put_command, | |
13462 | _("Copy a local file to the remote system."), | |
13463 | &remote_cmdlist); | |
13464 | ||
13465 | add_cmd ("get", class_files, remote_get_command, | |
13466 | _("Copy a remote file to the local system."), | |
13467 | &remote_cmdlist); | |
13468 | ||
13469 | add_cmd ("delete", class_files, remote_delete_command, | |
13470 | _("Delete a remote file."), | |
13471 | &remote_cmdlist); | |
13472 | ||
2d717e4f | 13473 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13474 | &remote_exec_file_var, _("\ |
2d717e4f | 13475 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13476 | Show the remote pathname for \"run\""), NULL, |
13477 | set_remote_exec_file, | |
13478 | show_remote_exec_file, | |
13479 | &remote_set_cmdlist, | |
13480 | &remote_show_cmdlist); | |
2d717e4f | 13481 | |
c1e36e3e PA |
13482 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13483 | &use_range_stepping, _("\ | |
13484 | Enable or disable range stepping."), _("\ | |
13485 | Show whether target-assisted range stepping is enabled."), _("\ | |
13486 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13487 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13488 | of issuing multiple single-steps. This speeds up source level\n\ | |
13489 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13490 | stepping is supported by the target. The default is on."), | |
13491 | set_range_stepping, | |
13492 | show_range_stepping, | |
13493 | &setlist, | |
13494 | &showlist); | |
13495 | ||
449092f6 CV |
13496 | /* Eventually initialize fileio. See fileio.c */ |
13497 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13498 | |
ba348170 | 13499 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13500 | special ptids with it set to != 0. */ |
ba348170 PA |
13501 | magic_null_ptid = ptid_build (42000, -1, 1); |
13502 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13503 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13504 | |
13505 | target_buf_size = 2048; | |
13506 | target_buf = xmalloc (target_buf_size); | |
c906108c | 13507 | } |
10760264 | 13508 |