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; | |
750ce8d1 YQ |
263 | |
264 | /* vCont;s */ | |
265 | int s; | |
266 | ||
267 | /* vCont;S */ | |
268 | int S; | |
d458bd84 PA |
269 | }; |
270 | ||
c1e36e3e PA |
271 | /* Controls whether GDB is willing to use range stepping. */ |
272 | ||
273 | static int use_range_stepping = 1; | |
274 | ||
0d031856 TT |
275 | #define OPAQUETHREADBYTES 8 |
276 | ||
277 | /* a 64 bit opaque identifier */ | |
278 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
279 | ||
280 | /* About this many threadisds fit in a packet. */ | |
281 | ||
282 | #define MAXTHREADLISTRESULTS 32 | |
283 | ||
80152258 PA |
284 | /* Data for the vFile:pread readahead cache. */ |
285 | ||
286 | struct readahead_cache | |
287 | { | |
288 | /* The file descriptor for the file that is being cached. -1 if the | |
289 | cache is invalid. */ | |
290 | int fd; | |
291 | ||
292 | /* The offset into the file that the cache buffer corresponds | |
293 | to. */ | |
294 | ULONGEST offset; | |
295 | ||
296 | /* The buffer holding the cache contents. */ | |
297 | gdb_byte *buf; | |
298 | /* The buffer's size. We try to read as much as fits into a packet | |
299 | at a time. */ | |
300 | size_t bufsize; | |
301 | ||
302 | /* Cache hit and miss counters. */ | |
303 | ULONGEST hit_count; | |
304 | ULONGEST miss_count; | |
305 | }; | |
306 | ||
ea9c271d DJ |
307 | /* Description of the remote protocol state for the currently |
308 | connected target. This is per-target state, and independent of the | |
309 | selected architecture. */ | |
310 | ||
311 | struct remote_state | |
312 | { | |
313 | /* A buffer to use for incoming packets, and its current size. The | |
314 | buffer is grown dynamically for larger incoming packets. | |
315 | Outgoing packets may also be constructed in this buffer. | |
316 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
317 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
318 | packets. */ | |
319 | char *buf; | |
320 | long buf_size; | |
be2a5f71 | 321 | |
1e51243a PA |
322 | /* True if we're going through initial connection setup (finding out |
323 | about the remote side's threads, relocating symbols, etc.). */ | |
324 | int starting_up; | |
325 | ||
be2a5f71 DJ |
326 | /* If we negotiated packet size explicitly (and thus can bypass |
327 | heuristics for the largest packet size that will not overflow | |
328 | a buffer in the stub), this will be set to that packet size. | |
329 | Otherwise zero, meaning to use the guessed size. */ | |
330 | long explicit_packet_size; | |
2d717e4f DJ |
331 | |
332 | /* remote_wait is normally called when the target is running and | |
333 | waits for a stop reply packet. But sometimes we need to call it | |
334 | when the target is already stopped. We can send a "?" packet | |
335 | and have remote_wait read the response. Or, if we already have | |
336 | the response, we can stash it in BUF and tell remote_wait to | |
337 | skip calling getpkt. This flag is set when BUF contains a | |
338 | stop reply packet and the target is not waiting. */ | |
339 | int cached_wait_status; | |
a6f3e723 SL |
340 | |
341 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
342 | expect acks from each other. The connection is assumed to be | |
343 | reliable. */ | |
344 | int noack_mode; | |
82f73884 PA |
345 | |
346 | /* True if we're connected in extended remote mode. */ | |
347 | int extended; | |
348 | ||
e24a49d8 PA |
349 | /* True if we resumed the target and we're waiting for the target to |
350 | stop. In the mean time, we can't start another command/query. | |
351 | The remote server wouldn't be ready to process it, so we'd | |
352 | timeout waiting for a reply that would never come and eventually | |
353 | we'd close the connection. This can happen in asynchronous mode | |
354 | because we allow GDB commands while the target is running. */ | |
355 | int waiting_for_stop_reply; | |
74531fed | 356 | |
d458bd84 PA |
357 | /* The status of the stub support for the various vCont actions. */ |
358 | struct vCont_action_support supports_vCont; | |
782b2b07 | 359 | |
3a29589a DJ |
360 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
361 | responded to that. */ | |
362 | int ctrlc_pending_p; | |
5d93a237 TT |
363 | |
364 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
365 | remote_open knows that we don't have a file open when the program | |
366 | starts. */ | |
367 | struct serial *remote_desc; | |
47f8a51d TT |
368 | |
369 | /* These are the threads which we last sent to the remote system. The | |
370 | TID member will be -1 for all or -2 for not sent yet. */ | |
371 | ptid_t general_thread; | |
372 | ptid_t continue_thread; | |
262e1174 TT |
373 | |
374 | /* This is the traceframe which we last selected on the remote system. | |
375 | It will be -1 if no traceframe is selected. */ | |
376 | int remote_traceframe_number; | |
747dc59d TT |
377 | |
378 | char *last_pass_packet; | |
5e4a05c4 TT |
379 | |
380 | /* The last QProgramSignals packet sent to the target. We bypass | |
381 | sending a new program signals list down to the target if the new | |
382 | packet is exactly the same as the last we sent. IOW, we only let | |
383 | the target know about program signals list changes. */ | |
384 | char *last_program_signals_packet; | |
b73be471 TT |
385 | |
386 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
387 | |
388 | int last_sent_step; | |
8e88304f TT |
389 | |
390 | char *finished_object; | |
391 | char *finished_annex; | |
392 | ULONGEST finished_offset; | |
b80fafe3 TT |
393 | |
394 | /* Should we try the 'ThreadInfo' query packet? | |
395 | ||
396 | This variable (NOT available to the user: auto-detect only!) | |
397 | determines whether GDB will use the new, simpler "ThreadInfo" | |
398 | query or the older, more complex syntax for thread queries. | |
399 | This is an auto-detect variable (set to true at each connect, | |
400 | and set to false when the target fails to recognize it). */ | |
401 | int use_threadinfo_query; | |
402 | int use_threadextra_query; | |
88b496c3 | 403 | |
ee154bee TT |
404 | /* This is set to the data address of the access causing the target |
405 | to stop for a watchpoint. */ | |
406 | CORE_ADDR remote_watch_data_address; | |
407 | ||
f7e6eed5 PA |
408 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
409 | enum target_stop_reason stop_reason; | |
0d031856 TT |
410 | |
411 | threadref echo_nextthread; | |
412 | threadref nextthread; | |
413 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
414 | |
415 | /* The state of remote notification. */ | |
416 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
417 | |
418 | /* The branch trace configuration. */ | |
419 | struct btrace_config btrace_config; | |
15a201c8 GB |
420 | |
421 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
422 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
423 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
424 | has yet been sent. */ | |
425 | int fs_pid; | |
80152258 PA |
426 | |
427 | /* A readahead cache for vFile:pread. Often, reading a binary | |
428 | involves a sequence of small reads. E.g., when parsing an ELF | |
429 | file. A readahead cache helps mostly the case of remote | |
430 | debugging on a connection with higher latency, due to the | |
431 | request/reply nature of the RSP. We only cache data for a single | |
432 | file descriptor at a time. */ | |
433 | struct readahead_cache readahead_cache; | |
ea9c271d DJ |
434 | }; |
435 | ||
dc146f7c VP |
436 | /* Private data that we'll store in (struct thread_info)->private. */ |
437 | struct private_thread_info | |
438 | { | |
439 | char *extra; | |
440 | int core; | |
441 | }; | |
442 | ||
443 | static void | |
444 | free_private_thread_info (struct private_thread_info *info) | |
445 | { | |
446 | xfree (info->extra); | |
447 | xfree (info); | |
448 | } | |
449 | ||
ea9c271d DJ |
450 | /* This data could be associated with a target, but we do not always |
451 | have access to the current target when we need it, so for now it is | |
452 | static. This will be fine for as long as only one target is in use | |
453 | at a time. */ | |
cf792862 | 454 | static struct remote_state *remote_state; |
ea9c271d DJ |
455 | |
456 | static struct remote_state * | |
0b83947e | 457 | get_remote_state_raw (void) |
ea9c271d | 458 | { |
cf792862 TT |
459 | return remote_state; |
460 | } | |
461 | ||
462 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
463 | return it. */ | |
464 | ||
465 | static struct remote_state * | |
466 | new_remote_state (void) | |
467 | { | |
468 | struct remote_state *result = XCNEW (struct remote_state); | |
469 | ||
470 | /* The default buffer size is unimportant; it will be expanded | |
471 | whenever a larger buffer is needed. */ | |
472 | result->buf_size = 400; | |
224c3ddb | 473 | result->buf = (char *) xmalloc (result->buf_size); |
262e1174 | 474 | result->remote_traceframe_number = -1; |
b73be471 | 475 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 476 | result->fs_pid = -1; |
cf792862 TT |
477 | |
478 | return result; | |
ea9c271d DJ |
479 | } |
480 | ||
481 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 482 | |
ad10f812 AC |
483 | struct packet_reg |
484 | { | |
485 | long offset; /* Offset into G packet. */ | |
486 | long regnum; /* GDB's internal register number. */ | |
487 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 488 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 489 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 490 | at present. */ |
f5656ead | 491 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 492 | at present. */ |
ad10f812 AC |
493 | }; |
494 | ||
ea9c271d | 495 | struct remote_arch_state |
d01949b6 | 496 | { |
ad10f812 AC |
497 | /* Description of the remote protocol registers. */ |
498 | long sizeof_g_packet; | |
b323314b AC |
499 | |
500 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 501 | (making an array gdbarch_num_regs in size). */ |
b323314b | 502 | struct packet_reg *regs; |
ad10f812 | 503 | |
d01949b6 AC |
504 | /* This is the size (in chars) of the first response to the ``g'' |
505 | packet. It is used as a heuristic when determining the maximum | |
506 | size of memory-read and memory-write packets. A target will | |
507 | typically only reserve a buffer large enough to hold the ``g'' | |
508 | packet. The size does not include packet overhead (headers and | |
23860348 | 509 | trailers). */ |
d01949b6 AC |
510 | long actual_register_packet_size; |
511 | ||
512 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 513 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
514 | long remote_packet_size; |
515 | }; | |
516 | ||
35b1e5cc SS |
517 | /* Utility: generate error from an incoming stub packet. */ |
518 | static void | |
519 | trace_error (char *buf) | |
520 | { | |
521 | if (*buf++ != 'E') | |
522 | return; /* not an error msg */ | |
523 | switch (*buf) | |
524 | { | |
525 | case '1': /* malformed packet error */ | |
526 | if (*++buf == '0') /* general case: */ | |
527 | error (_("remote.c: error in outgoing packet.")); | |
528 | else | |
529 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
530 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
531 | default: |
532 | error (_("Target returns error code '%s'."), buf); | |
533 | } | |
534 | } | |
535 | ||
536 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
537 | static char * | |
538 | remote_get_noisy_reply (char **buf_p, | |
539 | long *sizeof_buf) | |
540 | { | |
541 | do /* Loop on reply from remote stub. */ | |
542 | { | |
543 | char *buf; | |
a744cf53 | 544 | |
0df8b418 | 545 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
546 | getpkt (buf_p, sizeof_buf, 0); |
547 | buf = *buf_p; | |
ad91cd99 | 548 | if (buf[0] == 'E') |
35b1e5cc | 549 | trace_error (buf); |
61012eef | 550 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
551 | { |
552 | ULONGEST ul; | |
553 | CORE_ADDR from, to, org_to; | |
554 | char *p, *pp; | |
555 | int adjusted_size = 0; | |
7556d4a4 | 556 | int relocated = 0; |
dde08ee1 PA |
557 | |
558 | p = buf + strlen ("qRelocInsn:"); | |
559 | pp = unpack_varlen_hex (p, &ul); | |
560 | if (*pp != ';') | |
cb91c06a | 561 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
562 | from = ul; |
563 | ||
564 | p = pp + 1; | |
a9cbf802 | 565 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
566 | to = ul; |
567 | ||
568 | org_to = to; | |
569 | ||
492d29ea | 570 | TRY |
dde08ee1 | 571 | { |
f5656ead | 572 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 573 | relocated = 1; |
dde08ee1 | 574 | } |
492d29ea | 575 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
576 | { |
577 | if (ex.error == MEMORY_ERROR) | |
578 | { | |
579 | /* Propagate memory errors silently back to the | |
580 | target. The stub may have limited the range of | |
581 | addresses we can write to, for example. */ | |
582 | } | |
583 | else | |
584 | { | |
585 | /* Something unexpectedly bad happened. Be verbose | |
586 | so we can tell what, and propagate the error back | |
587 | to the stub, so it doesn't get stuck waiting for | |
588 | a response. */ | |
589 | exception_fprintf (gdb_stderr, ex, | |
590 | _("warning: relocating instruction: ")); | |
591 | } | |
592 | putpkt ("E01"); | |
593 | } | |
492d29ea | 594 | END_CATCH |
7556d4a4 PA |
595 | |
596 | if (relocated) | |
dde08ee1 PA |
597 | { |
598 | adjusted_size = to - org_to; | |
599 | ||
bba74b36 | 600 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
601 | putpkt (buf); |
602 | } | |
dde08ee1 | 603 | } |
ad91cd99 | 604 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
605 | remote_console_output (buf + 1); /* 'O' message from stub */ |
606 | else | |
0df8b418 | 607 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
608 | } |
609 | while (1); | |
610 | } | |
3c3bea1c | 611 | |
d01949b6 AC |
612 | /* Handle for retreving the remote protocol data from gdbarch. */ |
613 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
614 | ||
ea9c271d DJ |
615 | static struct remote_arch_state * |
616 | get_remote_arch_state (void) | |
d01949b6 | 617 | { |
17d8546e | 618 | gdb_assert (target_gdbarch () != NULL); |
19ba03f4 SM |
619 | return ((struct remote_arch_state *) |
620 | gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle)); | |
d01949b6 AC |
621 | } |
622 | ||
0b83947e DJ |
623 | /* Fetch the global remote target state. */ |
624 | ||
625 | static struct remote_state * | |
626 | get_remote_state (void) | |
627 | { | |
628 | /* Make sure that the remote architecture state has been | |
629 | initialized, because doing so might reallocate rs->buf. Any | |
630 | function which calls getpkt also needs to be mindful of changes | |
631 | to rs->buf, but this call limits the number of places which run | |
632 | into trouble. */ | |
633 | get_remote_arch_state (); | |
634 | ||
635 | return get_remote_state_raw (); | |
636 | } | |
637 | ||
94585166 DB |
638 | /* Cleanup routine for the remote module's pspace data. */ |
639 | ||
640 | static void | |
641 | remote_pspace_data_cleanup (struct program_space *pspace, void *arg) | |
642 | { | |
19ba03f4 | 643 | char *remote_exec_file = (char *) arg; |
94585166 DB |
644 | |
645 | xfree (remote_exec_file); | |
646 | } | |
647 | ||
648 | /* Fetch the remote exec-file from the current program space. */ | |
649 | ||
650 | static const char * | |
651 | get_remote_exec_file (void) | |
652 | { | |
653 | char *remote_exec_file; | |
654 | ||
19ba03f4 SM |
655 | remote_exec_file |
656 | = (char *) program_space_data (current_program_space, | |
657 | remote_pspace_data); | |
94585166 DB |
658 | if (remote_exec_file == NULL) |
659 | return ""; | |
660 | ||
661 | return remote_exec_file; | |
662 | } | |
663 | ||
664 | /* Set the remote exec file for PSPACE. */ | |
665 | ||
666 | static void | |
667 | set_pspace_remote_exec_file (struct program_space *pspace, | |
668 | char *remote_exec_file) | |
669 | { | |
19ba03f4 | 670 | char *old_file = (char *) program_space_data (pspace, remote_pspace_data); |
94585166 DB |
671 | |
672 | xfree (old_file); | |
673 | set_program_space_data (pspace, remote_pspace_data, | |
674 | xstrdup (remote_exec_file)); | |
675 | } | |
676 | ||
677 | /* The "set/show remote exec-file" set command hook. */ | |
678 | ||
679 | static void | |
680 | set_remote_exec_file (char *ignored, int from_tty, | |
681 | struct cmd_list_element *c) | |
682 | { | |
683 | gdb_assert (remote_exec_file_var != NULL); | |
684 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
685 | } | |
686 | ||
687 | /* The "set/show remote exec-file" show command hook. */ | |
688 | ||
689 | static void | |
690 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
691 | struct cmd_list_element *cmd, const char *value) | |
692 | { | |
693 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
694 | } | |
695 | ||
74ca34ce DJ |
696 | static int |
697 | compare_pnums (const void *lhs_, const void *rhs_) | |
698 | { | |
19ba03f4 SM |
699 | const struct packet_reg * const *lhs |
700 | = (const struct packet_reg * const *) lhs_; | |
701 | const struct packet_reg * const *rhs | |
702 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
703 | |
704 | if ((*lhs)->pnum < (*rhs)->pnum) | |
705 | return -1; | |
706 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
707 | return 0; | |
708 | else | |
709 | return 1; | |
710 | } | |
711 | ||
c21236dc PA |
712 | static int |
713 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 714 | { |
74ca34ce | 715 | int regnum, num_remote_regs, offset; |
74ca34ce | 716 | struct packet_reg **remote_regs; |
ea9c271d | 717 | |
4a22f64d | 718 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 719 | { |
c21236dc | 720 | struct packet_reg *r = ®s[regnum]; |
baef701f | 721 | |
4a22f64d | 722 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
723 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
724 | r->pnum = -1; | |
725 | else | |
726 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
727 | ||
b323314b | 728 | r->regnum = regnum; |
74ca34ce DJ |
729 | } |
730 | ||
731 | /* Define the g/G packet format as the contents of each register | |
732 | with a remote protocol number, in order of ascending protocol | |
733 | number. */ | |
734 | ||
224c3ddb | 735 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 736 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 737 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 738 | regnum++) |
c21236dc PA |
739 | if (regs[regnum].pnum != -1) |
740 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 741 | |
74ca34ce DJ |
742 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
743 | compare_pnums); | |
744 | ||
745 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
746 | { | |
747 | remote_regs[regnum]->in_g_packet = 1; | |
748 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 749 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
750 | } |
751 | ||
c21236dc PA |
752 | return offset; |
753 | } | |
754 | ||
755 | /* Given the architecture described by GDBARCH, return the remote | |
756 | protocol register's number and the register's offset in the g/G | |
757 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
758 | If the target does not have a mapping for REGNUM, return false, | |
759 | otherwise, return true. */ | |
760 | ||
761 | int | |
762 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
763 | int *pnum, int *poffset) | |
764 | { | |
765 | int sizeof_g_packet; | |
766 | struct packet_reg *regs; | |
767 | struct cleanup *old_chain; | |
768 | ||
769 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
770 | ||
224c3ddb | 771 | regs = XCNEWVEC (struct packet_reg, gdbarch_num_regs (gdbarch)); |
c21236dc PA |
772 | old_chain = make_cleanup (xfree, regs); |
773 | ||
774 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
775 | ||
776 | *pnum = regs[regnum].pnum; | |
777 | *poffset = regs[regnum].offset; | |
778 | ||
779 | do_cleanups (old_chain); | |
780 | ||
781 | return *pnum != -1; | |
782 | } | |
783 | ||
784 | static void * | |
785 | init_remote_state (struct gdbarch *gdbarch) | |
786 | { | |
787 | struct remote_state *rs = get_remote_state_raw (); | |
788 | struct remote_arch_state *rsa; | |
789 | ||
790 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
791 | ||
792 | /* Use the architecture to build a regnum<->pnum table, which will be | |
793 | 1:1 unless a feature set specifies otherwise. */ | |
794 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
795 | gdbarch_num_regs (gdbarch), | |
796 | struct packet_reg); | |
797 | ||
74ca34ce DJ |
798 | /* Record the maximum possible size of the g packet - it may turn out |
799 | to be smaller. */ | |
c21236dc | 800 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 801 | |
0df8b418 | 802 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
803 | remote stubs have a hardwired buffer size of 400 bytes |
804 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
805 | as the maximum packet-size to ensure that the packet and an extra | |
806 | NUL character can always fit in the buffer. This stops GDB | |
807 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
808 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
809 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 810 | |
ea9c271d DJ |
811 | /* This one is filled in when a ``g'' packet is received. */ |
812 | rsa->actual_register_packet_size = 0; | |
813 | ||
814 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
815 | default, adjust the size accordingly. Remember that each byte is |
816 | encoded as two characters. 32 is the overhead for the packet | |
817 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 818 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 819 | little. */ |
ea9c271d DJ |
820 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
821 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 822 | |
ea9c271d DJ |
823 | /* Make sure that the packet buffer is plenty big enough for |
824 | this architecture. */ | |
825 | if (rs->buf_size < rsa->remote_packet_size) | |
826 | { | |
827 | rs->buf_size = 2 * rsa->remote_packet_size; | |
224c3ddb | 828 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 829 | } |
6d820c5c | 830 | |
ea9c271d DJ |
831 | return rsa; |
832 | } | |
833 | ||
834 | /* Return the current allowed size of a remote packet. This is | |
835 | inferred from the current architecture, and should be used to | |
836 | limit the length of outgoing packets. */ | |
837 | static long | |
838 | get_remote_packet_size (void) | |
839 | { | |
be2a5f71 | 840 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
841 | struct remote_arch_state *rsa = get_remote_arch_state (); |
842 | ||
be2a5f71 DJ |
843 | if (rs->explicit_packet_size) |
844 | return rs->explicit_packet_size; | |
845 | ||
ea9c271d | 846 | return rsa->remote_packet_size; |
d01949b6 AC |
847 | } |
848 | ||
ad10f812 | 849 | static struct packet_reg * |
ea9c271d | 850 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 851 | { |
f5656ead | 852 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
853 | return NULL; |
854 | else | |
ad10f812 | 855 | { |
ea9c271d | 856 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 857 | |
b323314b AC |
858 | gdb_assert (r->regnum == regnum); |
859 | return r; | |
ad10f812 | 860 | } |
ad10f812 AC |
861 | } |
862 | ||
863 | static struct packet_reg * | |
ea9c271d | 864 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 865 | { |
b323314b | 866 | int i; |
a744cf53 | 867 | |
f5656ead | 868 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 869 | { |
ea9c271d | 870 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 871 | |
b323314b AC |
872 | if (r->pnum == pnum) |
873 | return r; | |
ad10f812 AC |
874 | } |
875 | return NULL; | |
d01949b6 AC |
876 | } |
877 | ||
c906108c SS |
878 | static struct target_ops remote_ops; |
879 | ||
880 | static struct target_ops extended_remote_ops; | |
881 | ||
6426a772 JM |
882 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
883 | ``forever'' still use the normal timeout mechanism. This is | |
884 | currently used by the ASYNC code to guarentee that target reads | |
885 | during the initial connect always time-out. Once getpkt has been | |
886 | modified to return a timeout indication and, in turn | |
887 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 888 | this can go away. */ |
6426a772 JM |
889 | static int wait_forever_enabled_p = 1; |
890 | ||
9a7071a8 JB |
891 | /* Allow the user to specify what sequence to send to the remote |
892 | when he requests a program interruption: Although ^C is usually | |
893 | what remote systems expect (this is the default, here), it is | |
894 | sometimes preferable to send a break. On other systems such | |
895 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
896 | is required in order to interrupt the execution. */ | |
897 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
898 | const char interrupt_sequence_break[] = "BREAK"; | |
899 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 900 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
901 | { |
902 | interrupt_sequence_control_c, | |
903 | interrupt_sequence_break, | |
904 | interrupt_sequence_break_g, | |
905 | NULL | |
906 | }; | |
907 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
908 | ||
909 | static void | |
910 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
911 | struct cmd_list_element *c, | |
912 | const char *value) | |
913 | { | |
914 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
915 | fprintf_filtered (file, | |
916 | _("Send the ASCII ETX character (Ctrl-c) " | |
917 | "to the remote target to interrupt the " | |
918 | "execution of the program.\n")); | |
919 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
920 | fprintf_filtered (file, | |
921 | _("send a break signal to the remote target " | |
922 | "to interrupt the execution of the program.\n")); | |
923 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
924 | fprintf_filtered (file, | |
925 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
926 | "the remote target to interrupt the execution " | |
927 | "of Linux kernel.\n")); | |
928 | else | |
929 | internal_error (__FILE__, __LINE__, | |
930 | _("Invalid value for interrupt_sequence_mode: %s."), | |
931 | interrupt_sequence_mode); | |
932 | } | |
6426a772 | 933 | |
9a7071a8 JB |
934 | /* This boolean variable specifies whether interrupt_sequence is sent |
935 | to the remote target when gdb connects to it. | |
936 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
937 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
938 | static int interrupt_on_connect = 0; | |
c906108c | 939 | |
9a7071a8 JB |
940 | /* This variable is used to implement the "set/show remotebreak" commands. |
941 | Since these commands are now deprecated in favor of "set/show remote | |
942 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
943 | static int remote_break; |
944 | ||
9a7071a8 JB |
945 | static void |
946 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
947 | { | |
948 | if (remote_break) | |
949 | interrupt_sequence_mode = interrupt_sequence_break; | |
950 | else | |
951 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
952 | } | |
953 | ||
954 | static void | |
955 | show_remotebreak (struct ui_file *file, int from_tty, | |
956 | struct cmd_list_element *c, | |
957 | const char *value) | |
958 | { | |
959 | } | |
960 | ||
c906108c SS |
961 | /* This variable sets the number of bits in an address that are to be |
962 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 963 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
964 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
965 | initial implementation of remote.c restricted the address sent in | |
966 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
967 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
968 | address was never sent. Since fixing this bug may cause a break in | |
969 | some remote targets this variable is principly provided to | |
23860348 | 970 | facilitate backward compatibility. */ |
c906108c | 971 | |
883b9c6c | 972 | static unsigned int remote_address_size; |
c906108c | 973 | |
75c99385 PA |
974 | /* Temporary to track who currently owns the terminal. See |
975 | remote_terminal_* for more details. */ | |
6426a772 JM |
976 | |
977 | static int remote_async_terminal_ours_p; | |
978 | ||
11cf8741 | 979 | \f |
11cf8741 | 980 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
981 | memory read/write packet. MIN (rsa->remote_packet_size, |
982 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 983 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
984 | (speed up transfers). The variables ``preferred_*'' (the user |
985 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 986 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
987 | |
988 | struct memory_packet_config | |
989 | { | |
990 | char *name; | |
991 | long size; | |
992 | int fixed_p; | |
993 | }; | |
994 | ||
a5c0808e PA |
995 | /* The default max memory-write-packet-size. The 16k is historical. |
996 | (It came from older GDB's using alloca for buffers and the | |
997 | knowledge (folklore?) that some hosts don't cope very well with | |
998 | large alloca calls.) */ | |
999 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384 | |
1000 | ||
1001 | /* The minimum remote packet size for memory transfers. Ensures we | |
1002 | can write at least one byte. */ | |
1003 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1004 | ||
11cf8741 JM |
1005 | /* Compute the current size of a read/write packet. Since this makes |
1006 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1007 | ||
1008 | static long | |
1009 | get_memory_packet_size (struct memory_packet_config *config) | |
1010 | { | |
d01949b6 | 1011 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
1012 | struct remote_arch_state *rsa = get_remote_arch_state (); |
1013 | ||
11cf8741 JM |
1014 | long what_they_get; |
1015 | if (config->fixed_p) | |
1016 | { | |
1017 | if (config->size <= 0) | |
a5c0808e | 1018 | what_they_get = DEFAULT_MAX_MEMORY_PACKET_SIZE; |
11cf8741 JM |
1019 | else |
1020 | what_they_get = config->size; | |
1021 | } | |
1022 | else | |
1023 | { | |
ea9c271d | 1024 | what_they_get = get_remote_packet_size (); |
23860348 | 1025 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1026 | if (config->size > 0 |
1027 | && what_they_get > config->size) | |
1028 | what_they_get = config->size; | |
be2a5f71 DJ |
1029 | |
1030 | /* Limit it to the size of the targets ``g'' response unless we have | |
1031 | permission from the stub to use a larger packet size. */ | |
1032 | if (rs->explicit_packet_size == 0 | |
1033 | && rsa->actual_register_packet_size > 0 | |
1034 | && what_they_get > rsa->actual_register_packet_size) | |
1035 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1036 | } |
a5c0808e PA |
1037 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1038 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1039 | |
1040 | /* Make sure there is room in the global buffer for this packet | |
1041 | (including its trailing NUL byte). */ | |
1042 | if (rs->buf_size < what_they_get + 1) | |
1043 | { | |
1044 | rs->buf_size = 2 * what_they_get; | |
224c3ddb | 1045 | rs->buf = (char *) xrealloc (rs->buf, 2 * what_they_get); |
6d820c5c DJ |
1046 | } |
1047 | ||
11cf8741 JM |
1048 | return what_they_get; |
1049 | } | |
1050 | ||
0df8b418 | 1051 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1052 | something really big then do a sanity check. */ |
11cf8741 JM |
1053 | |
1054 | static void | |
1055 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
1056 | { | |
1057 | int fixed_p = config->fixed_p; | |
1058 | long size = config->size; | |
a744cf53 | 1059 | |
11cf8741 | 1060 | if (args == NULL) |
8a3fe4f8 | 1061 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1062 | else if (strcmp (args, "hard") == 0 |
1063 | || strcmp (args, "fixed") == 0) | |
1064 | fixed_p = 1; | |
1065 | else if (strcmp (args, "soft") == 0 | |
1066 | || strcmp (args, "limit") == 0) | |
1067 | fixed_p = 0; | |
1068 | else | |
1069 | { | |
1070 | char *end; | |
a744cf53 | 1071 | |
11cf8741 JM |
1072 | size = strtoul (args, &end, 0); |
1073 | if (args == end) | |
8a3fe4f8 | 1074 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1075 | |
1076 | /* Instead of explicitly capping the size of a packet to or | |
1077 | disallowing it, the user is allowed to set the size to | |
1078 | something arbitrarily large. */ | |
11cf8741 | 1079 | } |
a5c0808e PA |
1080 | |
1081 | /* So that the query shows the correct value. */ | |
1082 | if (size <= 0) | |
1083 | size = DEFAULT_MAX_MEMORY_PACKET_SIZE; | |
1084 | ||
23860348 | 1085 | /* Extra checks? */ |
11cf8741 JM |
1086 | if (fixed_p && !config->fixed_p) |
1087 | { | |
e2e0b3e5 AC |
1088 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1089 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 1090 | config->name, size)) |
8a3fe4f8 | 1091 | error (_("Packet size not changed.")); |
11cf8741 | 1092 | } |
23860348 | 1093 | /* Update the config. */ |
11cf8741 JM |
1094 | config->fixed_p = fixed_p; |
1095 | config->size = size; | |
1096 | } | |
1097 | ||
1098 | static void | |
1099 | show_memory_packet_size (struct memory_packet_config *config) | |
1100 | { | |
a3f17187 | 1101 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1102 | if (config->fixed_p) |
a3f17187 | 1103 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1104 | get_memory_packet_size (config)); |
1105 | else | |
a3f17187 | 1106 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1107 | get_memory_packet_size (config)); |
1108 | } | |
1109 | ||
1110 | static struct memory_packet_config memory_write_packet_config = | |
1111 | { | |
1112 | "memory-write-packet-size", | |
1113 | }; | |
1114 | ||
1115 | static void | |
1116 | set_memory_write_packet_size (char *args, int from_tty) | |
1117 | { | |
1118 | set_memory_packet_size (args, &memory_write_packet_config); | |
1119 | } | |
1120 | ||
1121 | static void | |
1122 | show_memory_write_packet_size (char *args, int from_tty) | |
1123 | { | |
1124 | show_memory_packet_size (&memory_write_packet_config); | |
1125 | } | |
1126 | ||
1127 | static long | |
1128 | get_memory_write_packet_size (void) | |
1129 | { | |
1130 | return get_memory_packet_size (&memory_write_packet_config); | |
1131 | } | |
1132 | ||
1133 | static struct memory_packet_config memory_read_packet_config = | |
1134 | { | |
1135 | "memory-read-packet-size", | |
1136 | }; | |
1137 | ||
1138 | static void | |
1139 | set_memory_read_packet_size (char *args, int from_tty) | |
1140 | { | |
1141 | set_memory_packet_size (args, &memory_read_packet_config); | |
1142 | } | |
1143 | ||
1144 | static void | |
1145 | show_memory_read_packet_size (char *args, int from_tty) | |
1146 | { | |
1147 | show_memory_packet_size (&memory_read_packet_config); | |
1148 | } | |
1149 | ||
1150 | static long | |
1151 | get_memory_read_packet_size (void) | |
1152 | { | |
1153 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1154 | |
11cf8741 JM |
1155 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1156 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1157 | increased beyond this. */ |
1158 | if (size > get_remote_packet_size ()) | |
1159 | size = get_remote_packet_size (); | |
11cf8741 JM |
1160 | return size; |
1161 | } | |
1162 | ||
11cf8741 | 1163 | \f |
5a2468f5 | 1164 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1165 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1166 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1167 | |
1168 | enum packet_support | |
1169 | { | |
1170 | PACKET_SUPPORT_UNKNOWN = 0, | |
1171 | PACKET_ENABLE, | |
1172 | PACKET_DISABLE | |
1173 | }; | |
1174 | ||
5a2468f5 JM |
1175 | struct packet_config |
1176 | { | |
bb572ddd DJ |
1177 | const char *name; |
1178 | const char *title; | |
4082afcc PA |
1179 | |
1180 | /* If auto, GDB auto-detects support for this packet or feature, | |
1181 | either through qSupported, or by trying the packet and looking | |
1182 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1183 | packet. If false, the packet is disabled. Configs that don't |
1184 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1185 | enum auto_boolean detect; |
4082afcc PA |
1186 | |
1187 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1188 | enum packet_support support; |
1189 | }; | |
1190 | ||
d471ea57 | 1191 | /* Analyze a packet's return value and update the packet config |
23860348 | 1192 | accordingly. */ |
d471ea57 AC |
1193 | |
1194 | enum packet_result | |
1195 | { | |
1196 | PACKET_ERROR, | |
1197 | PACKET_OK, | |
1198 | PACKET_UNKNOWN | |
1199 | }; | |
1200 | ||
4082afcc PA |
1201 | static enum packet_support packet_config_support (struct packet_config *config); |
1202 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1203 | |
1204 | static void | |
fba45db2 | 1205 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1206 | { |
1207 | char *support = "internal-error"; | |
a744cf53 | 1208 | |
4082afcc | 1209 | switch (packet_config_support (config)) |
5a2468f5 JM |
1210 | { |
1211 | case PACKET_ENABLE: | |
1212 | support = "enabled"; | |
1213 | break; | |
1214 | case PACKET_DISABLE: | |
1215 | support = "disabled"; | |
1216 | break; | |
1217 | case PACKET_SUPPORT_UNKNOWN: | |
1218 | support = "unknown"; | |
1219 | break; | |
1220 | } | |
1221 | switch (config->detect) | |
1222 | { | |
7f19b9a2 | 1223 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1224 | printf_filtered (_("Support for the `%s' packet " |
1225 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1226 | config->name, support); |
5a2468f5 | 1227 | break; |
7f19b9a2 AC |
1228 | case AUTO_BOOLEAN_TRUE: |
1229 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1230 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1231 | config->name, support); | |
8e248173 | 1232 | break; |
5a2468f5 JM |
1233 | } |
1234 | } | |
1235 | ||
1236 | static void | |
bb572ddd DJ |
1237 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1238 | const char *title, int legacy) | |
d471ea57 | 1239 | { |
5a2468f5 JM |
1240 | char *set_doc; |
1241 | char *show_doc; | |
d471ea57 | 1242 | char *cmd_name; |
3ed07be4 | 1243 | |
5a2468f5 JM |
1244 | config->name = name; |
1245 | config->title = title; | |
b435e160 AC |
1246 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1247 | name, title); | |
3e43a32a MS |
1248 | show_doc = xstrprintf ("Show current use of remote " |
1249 | "protocol `%s' (%s) packet", | |
b435e160 | 1250 | name, title); |
d471ea57 | 1251 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1252 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1253 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1254 | &config->detect, set_doc, |
1255 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1256 | NULL, |
bb572ddd DJ |
1257 | show_remote_protocol_packet_cmd, |
1258 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1259 | /* The command code copies the documentation strings. */ |
1260 | xfree (set_doc); | |
1261 | xfree (show_doc); | |
23860348 | 1262 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1263 | if (legacy) |
1264 | { | |
1265 | char *legacy_name; | |
a744cf53 | 1266 | |
b435e160 | 1267 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1268 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1269 | &remote_set_cmdlist); |
d471ea57 | 1270 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1271 | &remote_show_cmdlist); |
d471ea57 | 1272 | } |
5a2468f5 JM |
1273 | } |
1274 | ||
d471ea57 | 1275 | static enum packet_result |
a76d924d | 1276 | packet_check_result (const char *buf) |
5a2468f5 | 1277 | { |
d471ea57 | 1278 | if (buf[0] != '\0') |
5a2468f5 | 1279 | { |
d471ea57 | 1280 | /* The stub recognized the packet request. Check that the |
23860348 | 1281 | operation succeeded. */ |
a76d924d DJ |
1282 | if (buf[0] == 'E' |
1283 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1284 | && buf[3] == '\0') | |
1285 | /* "Enn" - definitly an error. */ | |
1286 | return PACKET_ERROR; | |
1287 | ||
1288 | /* Always treat "E." as an error. This will be used for | |
1289 | more verbose error messages, such as E.memtypes. */ | |
1290 | if (buf[0] == 'E' && buf[1] == '.') | |
1291 | return PACKET_ERROR; | |
1292 | ||
1293 | /* The packet may or may not be OK. Just assume it is. */ | |
1294 | return PACKET_OK; | |
1295 | } | |
1296 | else | |
1297 | /* The stub does not support the packet. */ | |
1298 | return PACKET_UNKNOWN; | |
1299 | } | |
1300 | ||
1301 | static enum packet_result | |
1302 | packet_ok (const char *buf, struct packet_config *config) | |
1303 | { | |
1304 | enum packet_result result; | |
1305 | ||
4082afcc PA |
1306 | if (config->detect != AUTO_BOOLEAN_TRUE |
1307 | && config->support == PACKET_DISABLE) | |
1308 | internal_error (__FILE__, __LINE__, | |
1309 | _("packet_ok: attempt to use a disabled packet")); | |
1310 | ||
a76d924d DJ |
1311 | result = packet_check_result (buf); |
1312 | switch (result) | |
1313 | { | |
1314 | case PACKET_OK: | |
1315 | case PACKET_ERROR: | |
1316 | /* The stub recognized the packet request. */ | |
4082afcc | 1317 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1318 | { |
d471ea57 AC |
1319 | if (remote_debug) |
1320 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1321 | "Packet %s (%s) is supported\n", |
1322 | config->name, config->title); | |
d471ea57 | 1323 | config->support = PACKET_ENABLE; |
d471ea57 | 1324 | } |
a76d924d DJ |
1325 | break; |
1326 | case PACKET_UNKNOWN: | |
23860348 | 1327 | /* The stub does not support the packet. */ |
4082afcc PA |
1328 | if (config->detect == AUTO_BOOLEAN_AUTO |
1329 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1330 | { |
4082afcc PA |
1331 | /* If the stub previously indicated that the packet was |
1332 | supported then there is a protocol error. */ | |
1333 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1334 | config->name, config->title); | |
1335 | } | |
1336 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1337 | { | |
1338 | /* The user set it wrong. */ | |
1339 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1340 | config->name, config->title); | |
d471ea57 | 1341 | } |
4082afcc PA |
1342 | |
1343 | if (remote_debug) | |
1344 | fprintf_unfiltered (gdb_stdlog, | |
1345 | "Packet %s (%s) is NOT supported\n", | |
1346 | config->name, config->title); | |
1347 | config->support = PACKET_DISABLE; | |
a76d924d | 1348 | break; |
5a2468f5 | 1349 | } |
a76d924d DJ |
1350 | |
1351 | return result; | |
5a2468f5 JM |
1352 | } |
1353 | ||
444abaca DJ |
1354 | enum { |
1355 | PACKET_vCont = 0, | |
1356 | PACKET_X, | |
1357 | PACKET_qSymbol, | |
1358 | PACKET_P, | |
1359 | PACKET_p, | |
1360 | PACKET_Z0, | |
1361 | PACKET_Z1, | |
1362 | PACKET_Z2, | |
1363 | PACKET_Z3, | |
1364 | PACKET_Z4, | |
15a201c8 | 1365 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1366 | PACKET_vFile_open, |
1367 | PACKET_vFile_pread, | |
1368 | PACKET_vFile_pwrite, | |
1369 | PACKET_vFile_close, | |
1370 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1371 | PACKET_vFile_readlink, |
0a93529c | 1372 | PACKET_vFile_fstat, |
0876f84a | 1373 | PACKET_qXfer_auxv, |
23181151 | 1374 | PACKET_qXfer_features, |
c78fa86a | 1375 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1376 | PACKET_qXfer_libraries, |
2268b414 | 1377 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1378 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1379 | PACKET_qXfer_spu_read, |
1380 | PACKET_qXfer_spu_write, | |
07e059b5 | 1381 | PACKET_qXfer_osdata, |
dc146f7c | 1382 | PACKET_qXfer_threads, |
0fb4aa4b | 1383 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1384 | PACKET_qXfer_traceframe_info, |
169081d0 | 1385 | PACKET_qXfer_uib, |
711e434b | 1386 | PACKET_qGetTIBAddr, |
444abaca | 1387 | PACKET_qGetTLSAddr, |
be2a5f71 | 1388 | PACKET_qSupported, |
bd3eecc3 | 1389 | PACKET_qTStatus, |
89be2091 | 1390 | PACKET_QPassSignals, |
9b224c5e | 1391 | PACKET_QProgramSignals, |
936d2992 | 1392 | PACKET_qCRC, |
08388c79 | 1393 | PACKET_qSearch_memory, |
2d717e4f DJ |
1394 | PACKET_vAttach, |
1395 | PACKET_vRun, | |
a6f3e723 | 1396 | PACKET_QStartNoAckMode, |
82f73884 | 1397 | PACKET_vKill, |
4aa995e1 PA |
1398 | PACKET_qXfer_siginfo_read, |
1399 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1400 | PACKET_qAttached, |
4082afcc PA |
1401 | |
1402 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1403 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1404 | |
1405 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1406 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1407 | |
1408 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1409 | PACKET_BreakpointCommands, |
4082afcc PA |
1410 | |
1411 | /* Support for fast tracepoints. */ | |
7a697b8d | 1412 | PACKET_FastTracepoints, |
4082afcc PA |
1413 | |
1414 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1415 | PACKET_StaticTracepoints, |
4082afcc PA |
1416 | |
1417 | /* Support for installing tracepoints while a trace experiment is | |
1418 | running. */ | |
1e4d1764 | 1419 | PACKET_InstallInTrace, |
4082afcc | 1420 | |
40ab02ce MS |
1421 | PACKET_bc, |
1422 | PACKET_bs, | |
409873ef | 1423 | PACKET_TracepointSource, |
d914c394 | 1424 | PACKET_QAllow, |
78d85199 | 1425 | PACKET_qXfer_fdpic, |
03583c20 | 1426 | PACKET_QDisableRandomization, |
d1feda86 | 1427 | PACKET_QAgent, |
f6f899bf | 1428 | PACKET_QTBuffer_size, |
9accd112 MM |
1429 | PACKET_Qbtrace_off, |
1430 | PACKET_Qbtrace_bts, | |
b20a6524 | 1431 | PACKET_Qbtrace_pt, |
9accd112 | 1432 | PACKET_qXfer_btrace, |
4082afcc PA |
1433 | |
1434 | /* Support for the QNonStop packet. */ | |
1435 | PACKET_QNonStop, | |
1436 | ||
1437 | /* Support for multi-process extensions. */ | |
1438 | PACKET_multiprocess_feature, | |
1439 | ||
1440 | /* Support for enabling and disabling tracepoints while a trace | |
1441 | experiment is running. */ | |
1442 | PACKET_EnableDisableTracepoints_feature, | |
1443 | ||
1444 | /* Support for collecting strings using the tracenz bytecode. */ | |
1445 | PACKET_tracenz_feature, | |
1446 | ||
1447 | /* Support for continuing to run a trace experiment while GDB is | |
1448 | disconnected. */ | |
1449 | PACKET_DisconnectedTracing_feature, | |
1450 | ||
1451 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1452 | PACKET_augmented_libraries_svr4_read_feature, | |
1453 | ||
f4abbc16 MM |
1454 | /* Support for the qXfer:btrace-conf:read packet. */ |
1455 | PACKET_qXfer_btrace_conf, | |
1456 | ||
d33501a5 MM |
1457 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1458 | PACKET_Qbtrace_conf_bts_size, | |
1459 | ||
f7e6eed5 PA |
1460 | /* Support for swbreak+ feature. */ |
1461 | PACKET_swbreak_feature, | |
1462 | ||
1463 | /* Support for hwbreak+ feature. */ | |
1464 | PACKET_hwbreak_feature, | |
1465 | ||
89245bc0 DB |
1466 | /* Support for fork events. */ |
1467 | PACKET_fork_event_feature, | |
1468 | ||
1469 | /* Support for vfork events. */ | |
1470 | PACKET_vfork_event_feature, | |
1471 | ||
b20a6524 MM |
1472 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1473 | PACKET_Qbtrace_conf_pt_size, | |
1474 | ||
94585166 DB |
1475 | /* Support for exec events. */ |
1476 | PACKET_exec_event_feature, | |
1477 | ||
750ce8d1 YQ |
1478 | /* Support for query supported vCont actions. */ |
1479 | PACKET_vContSupported, | |
1480 | ||
444abaca DJ |
1481 | PACKET_MAX |
1482 | }; | |
506fb367 | 1483 | |
444abaca | 1484 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1485 | |
f7e6eed5 PA |
1486 | /* Returns the packet's corresponding "set remote foo-packet" command |
1487 | state. See struct packet_config for more details. */ | |
1488 | ||
1489 | static enum auto_boolean | |
1490 | packet_set_cmd_state (int packet) | |
1491 | { | |
1492 | return remote_protocol_packets[packet].detect; | |
1493 | } | |
1494 | ||
4082afcc PA |
1495 | /* Returns whether a given packet or feature is supported. This takes |
1496 | into account the state of the corresponding "set remote foo-packet" | |
1497 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1498 | |
4082afcc PA |
1499 | static enum packet_support |
1500 | packet_config_support (struct packet_config *config) | |
1501 | { | |
1502 | switch (config->detect) | |
444abaca | 1503 | { |
4082afcc PA |
1504 | case AUTO_BOOLEAN_TRUE: |
1505 | return PACKET_ENABLE; | |
1506 | case AUTO_BOOLEAN_FALSE: | |
1507 | return PACKET_DISABLE; | |
1508 | case AUTO_BOOLEAN_AUTO: | |
1509 | return config->support; | |
1510 | default: | |
1511 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1512 | } |
4082afcc PA |
1513 | } |
1514 | ||
1515 | /* Same as packet_config_support, but takes the packet's enum value as | |
1516 | argument. */ | |
1517 | ||
1518 | static enum packet_support | |
1519 | packet_support (int packet) | |
1520 | { | |
1521 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1522 | ||
1523 | return packet_config_support (config); | |
dc8acb97 MS |
1524 | } |
1525 | ||
5a2468f5 | 1526 | static void |
444abaca DJ |
1527 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1528 | struct cmd_list_element *c, | |
1529 | const char *value) | |
5a2468f5 | 1530 | { |
444abaca | 1531 | struct packet_config *packet; |
5a2468f5 | 1532 | |
444abaca DJ |
1533 | for (packet = remote_protocol_packets; |
1534 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1535 | packet++) | |
1536 | { | |
1537 | if (&packet->detect == c->var) | |
1538 | { | |
1539 | show_packet_config_cmd (packet); | |
1540 | return; | |
1541 | } | |
1542 | } | |
9b20d036 | 1543 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1544 | c->name); |
5a2468f5 JM |
1545 | } |
1546 | ||
d471ea57 AC |
1547 | /* Should we try one of the 'Z' requests? */ |
1548 | ||
1549 | enum Z_packet_type | |
1550 | { | |
1551 | Z_PACKET_SOFTWARE_BP, | |
1552 | Z_PACKET_HARDWARE_BP, | |
1553 | Z_PACKET_WRITE_WP, | |
1554 | Z_PACKET_READ_WP, | |
1555 | Z_PACKET_ACCESS_WP, | |
1556 | NR_Z_PACKET_TYPES | |
1557 | }; | |
96baa820 | 1558 | |
d471ea57 | 1559 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1560 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1561 | |
7f19b9a2 | 1562 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1563 | |
1564 | static void | |
fba45db2 KB |
1565 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1566 | struct cmd_list_element *c) | |
96baa820 | 1567 | { |
d471ea57 | 1568 | int i; |
a744cf53 | 1569 | |
d471ea57 | 1570 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1571 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1572 | } |
1573 | ||
1574 | static void | |
08546159 AC |
1575 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1576 | struct cmd_list_element *c, | |
1577 | const char *value) | |
96baa820 | 1578 | { |
d471ea57 | 1579 | int i; |
a744cf53 | 1580 | |
d471ea57 AC |
1581 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1582 | { | |
444abaca | 1583 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1584 | } |
96baa820 JM |
1585 | } |
1586 | ||
4082afcc PA |
1587 | /* Returns true if the multi-process extensions are in effect. */ |
1588 | ||
1589 | static int | |
1590 | remote_multi_process_p (struct remote_state *rs) | |
1591 | { | |
1592 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1593 | } | |
1594 | ||
de0d863e DB |
1595 | /* Returns true if fork events are supported. */ |
1596 | ||
1597 | static int | |
1598 | remote_fork_event_p (struct remote_state *rs) | |
1599 | { | |
1600 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1601 | } | |
1602 | ||
c269dbdb DB |
1603 | /* Returns true if vfork events are supported. */ |
1604 | ||
1605 | static int | |
1606 | remote_vfork_event_p (struct remote_state *rs) | |
1607 | { | |
1608 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1609 | } | |
1610 | ||
d46addbb DB |
1611 | /* Returns true if exec events are supported. */ |
1612 | ||
1613 | static int | |
1614 | remote_exec_event_p (struct remote_state *rs) | |
1615 | { | |
1616 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
1617 | } | |
1618 | ||
cbb8991c DB |
1619 | /* Insert fork catchpoint target routine. If fork events are enabled |
1620 | then return success, nothing more to do. */ | |
1621 | ||
1622 | static int | |
1623 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1624 | { | |
1625 | struct remote_state *rs = get_remote_state (); | |
1626 | ||
1627 | return !remote_fork_event_p (rs); | |
1628 | } | |
1629 | ||
1630 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1631 | return success. */ | |
1632 | ||
1633 | static int | |
1634 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1635 | { | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1640 | then return success, nothing more to do. */ | |
1641 | ||
1642 | static int | |
1643 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1644 | { | |
1645 | struct remote_state *rs = get_remote_state (); | |
1646 | ||
1647 | return !remote_vfork_event_p (rs); | |
1648 | } | |
1649 | ||
1650 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1651 | return success. */ | |
1652 | ||
1653 | static int | |
1654 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1655 | { | |
1656 | return 0; | |
1657 | } | |
1658 | ||
d46addbb DB |
1659 | /* Insert exec catchpoint target routine. If exec events are |
1660 | enabled, just return success. */ | |
1661 | ||
1662 | static int | |
1663 | remote_insert_exec_catchpoint (struct target_ops *ops, int pid) | |
1664 | { | |
1665 | struct remote_state *rs = get_remote_state (); | |
1666 | ||
1667 | return !remote_exec_event_p (rs); | |
1668 | } | |
1669 | ||
1670 | /* Remove exec catchpoint target routine. Nothing to do, just | |
1671 | return success. */ | |
1672 | ||
1673 | static int | |
1674 | remote_remove_exec_catchpoint (struct target_ops *ops, int pid) | |
1675 | { | |
1676 | return 0; | |
1677 | } | |
1678 | ||
23860348 | 1679 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1680 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1681 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1682 | |
74531fed PA |
1683 | \f |
1684 | /* Asynchronous signal handle registered as event loop source for | |
1685 | when we have pending events ready to be passed to the core. */ | |
1686 | ||
1687 | static struct async_event_handler *remote_async_inferior_event_token; | |
1688 | ||
c906108c SS |
1689 | \f |
1690 | ||
79d7f229 PA |
1691 | static ptid_t magic_null_ptid; |
1692 | static ptid_t not_sent_ptid; | |
1693 | static ptid_t any_thread_ptid; | |
1694 | ||
0b16c5cf PA |
1695 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1696 | detach instead of killing it when bailing out). */ | |
1697 | ||
1698 | static int | |
1699 | remote_query_attached (int pid) | |
1700 | { | |
1701 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1702 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1703 | |
4082afcc | 1704 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1705 | return 0; |
1706 | ||
1707 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1708 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1709 | else |
bba74b36 | 1710 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1711 | |
1712 | putpkt (rs->buf); | |
1713 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1714 | ||
1715 | switch (packet_ok (rs->buf, | |
1554e9be | 1716 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1717 | { |
1718 | case PACKET_OK: | |
1719 | if (strcmp (rs->buf, "1") == 0) | |
1720 | return 1; | |
1721 | break; | |
1722 | case PACKET_ERROR: | |
1723 | warning (_("Remote failure reply: %s"), rs->buf); | |
1724 | break; | |
1725 | case PACKET_UNKNOWN: | |
1726 | break; | |
1727 | } | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
49c62f2e PA |
1732 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1733 | has been invented by GDB, instead of reported by the target. Since | |
1734 | we can be connected to a remote system before before knowing about | |
1735 | any inferior, mark the target with execution when we find the first | |
1736 | inferior. If ATTACHED is 1, then we had just attached to this | |
1737 | inferior. If it is 0, then we just created this inferior. If it | |
1738 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1739 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1740 | attempt to open this inferior's executable as the main executable | |
1741 | if no main executable is open already. */ | |
1941c569 PA |
1742 | |
1743 | static struct inferior * | |
1b6e6f5c GB |
1744 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1745 | int try_open_exec) | |
1941c569 | 1746 | { |
1941c569 PA |
1747 | struct inferior *inf; |
1748 | ||
0b16c5cf PA |
1749 | /* Check whether this process we're learning about is to be |
1750 | considered attached, or if is to be considered to have been | |
1751 | spawned by the stub. */ | |
1752 | if (attached == -1) | |
1753 | attached = remote_query_attached (pid); | |
1754 | ||
f5656ead | 1755 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1756 | { |
1757 | /* If the target shares code across all inferiors, then every | |
1758 | attach adds a new inferior. */ | |
1759 | inf = add_inferior (pid); | |
1760 | ||
1761 | /* ... and every inferior is bound to the same program space. | |
1762 | However, each inferior may still have its own address | |
1763 | space. */ | |
1764 | inf->aspace = maybe_new_address_space (); | |
1765 | inf->pspace = current_program_space; | |
1766 | } | |
1767 | else | |
1768 | { | |
1769 | /* In the traditional debugging scenario, there's a 1-1 match | |
1770 | between program/address spaces. We simply bind the inferior | |
1771 | to the program space's address space. */ | |
1772 | inf = current_inferior (); | |
1773 | inferior_appeared (inf, pid); | |
1774 | } | |
1941c569 | 1775 | |
0b16c5cf | 1776 | inf->attach_flag = attached; |
49c62f2e | 1777 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1778 | |
1b6e6f5c GB |
1779 | /* If no main executable is currently open then attempt to |
1780 | open the file that was executed to create this inferior. */ | |
835205d0 | 1781 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1782 | exec_file_locate_attach (pid, 1); |
1783 | ||
1941c569 PA |
1784 | return inf; |
1785 | } | |
1786 | ||
1787 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1788 | according to RUNNING. */ | |
1789 | ||
c906108c | 1790 | static void |
1941c569 | 1791 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1792 | { |
b7ea362b PA |
1793 | struct remote_state *rs = get_remote_state (); |
1794 | ||
1795 | /* GDB historically didn't pull threads in the initial connection | |
1796 | setup. If the remote target doesn't even have a concept of | |
1797 | threads (e.g., a bare-metal target), even if internally we | |
1798 | consider that a single-threaded target, mentioning a new thread | |
1799 | might be confusing to the user. Be silent then, preserving the | |
1800 | age old behavior. */ | |
1801 | if (rs->starting_up) | |
1802 | add_thread_silent (ptid); | |
1803 | else | |
1804 | add_thread (ptid); | |
1941c569 PA |
1805 | |
1806 | set_executing (ptid, running); | |
1807 | set_running (ptid, running); | |
1808 | } | |
1809 | ||
1810 | /* Come here when we learn about a thread id from the remote target. | |
1811 | It may be the first time we hear about such thread, so take the | |
1812 | opportunity to add it to GDB's thread list. In case this is the | |
1813 | first time we're noticing its corresponding inferior, add it to | |
1814 | GDB's inferior list as well. */ | |
1815 | ||
1816 | static void | |
1817 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1818 | { | |
c906108c SS |
1819 | /* If this is a new thread, add it to GDB's thread list. |
1820 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1821 | |
1822 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1823 | { | |
1824 | /* We're seeing an event on a thread id we knew had exited. | |
1825 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1826 | remote_add_thread (currthread, running); |
82f73884 PA |
1827 | return; |
1828 | } | |
1829 | ||
79d7f229 | 1830 | if (!in_thread_list (currthread)) |
c0a2216e | 1831 | { |
1941c569 | 1832 | struct inferior *inf = NULL; |
bad34192 | 1833 | int pid = ptid_get_pid (currthread); |
1941c569 | 1834 | |
bad34192 PA |
1835 | if (ptid_is_pid (inferior_ptid) |
1836 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1837 | { |
1838 | /* inferior_ptid has no thread member yet. This can happen | |
1839 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1840 | stub doesn't support qC. This is the first stop reported | |
1841 | after an attach, so this is the main thread. Update the | |
1842 | ptid in the thread list. */ | |
bad34192 PA |
1843 | if (in_thread_list (pid_to_ptid (pid))) |
1844 | thread_change_ptid (inferior_ptid, currthread); | |
1845 | else | |
1846 | { | |
1847 | remote_add_thread (currthread, running); | |
1848 | inferior_ptid = currthread; | |
1849 | } | |
dc146f7c | 1850 | return; |
c0a2216e | 1851 | } |
82f73884 PA |
1852 | |
1853 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1854 | { |
1855 | /* inferior_ptid is not set yet. This can happen with the | |
1856 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1857 | doesn't support qC. This is the first stop reported | |
1858 | after an attach, so this is the main thread. Update the | |
1859 | ptid in the thread list. */ | |
dc146f7c | 1860 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1861 | return; |
c0a2216e | 1862 | } |
82f73884 | 1863 | |
29c87f7f PA |
1864 | /* When connecting to a target remote, or to a target |
1865 | extended-remote which already was debugging an inferior, we | |
1866 | may not know about it yet. Add it before adding its child | |
1867 | thread, so notifications are emitted in a sensible order. */ | |
1868 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1869 | { |
1870 | struct remote_state *rs = get_remote_state (); | |
1871 | int fake_pid_p = !remote_multi_process_p (rs); | |
1872 | ||
1873 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1874 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1875 | } |
29c87f7f | 1876 | |
82f73884 | 1877 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1878 | remote_add_thread (currthread, running); |
1879 | ||
1880 | /* If we found a new inferior, let the common code do whatever | |
1881 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1882 | breakpoints), unless we're just setting up an all-stop |
1883 | connection. */ | |
1941c569 | 1884 | if (inf != NULL) |
b7ea362b PA |
1885 | { |
1886 | struct remote_state *rs = get_remote_state (); | |
1887 | ||
1888 | if (non_stop || !rs->starting_up) | |
1889 | notice_new_inferior (currthread, running, 0); | |
1890 | } | |
c0a2216e | 1891 | } |
c906108c SS |
1892 | } |
1893 | ||
dc146f7c VP |
1894 | /* Return the private thread data, creating it if necessary. */ |
1895 | ||
70221824 | 1896 | static struct private_thread_info * |
dc146f7c VP |
1897 | demand_private_info (ptid_t ptid) |
1898 | { | |
1899 | struct thread_info *info = find_thread_ptid (ptid); | |
1900 | ||
1901 | gdb_assert (info); | |
1902 | ||
fe978cb0 | 1903 | if (!info->priv) |
dc146f7c | 1904 | { |
8d749320 | 1905 | info->priv = XNEW (struct private_thread_info); |
dc146f7c | 1906 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1907 | info->priv->core = -1; |
1908 | info->priv->extra = 0; | |
dc146f7c VP |
1909 | } |
1910 | ||
fe978cb0 | 1911 | return info->priv; |
dc146f7c VP |
1912 | } |
1913 | ||
74531fed PA |
1914 | /* Call this function as a result of |
1915 | 1) A halt indication (T packet) containing a thread id | |
1916 | 2) A direct query of currthread | |
0df8b418 | 1917 | 3) Successful execution of set thread */ |
74531fed PA |
1918 | |
1919 | static void | |
47f8a51d | 1920 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1921 | { |
47f8a51d | 1922 | rs->general_thread = currthread; |
74531fed PA |
1923 | } |
1924 | ||
89be2091 DJ |
1925 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1926 | it can simply pass through to the inferior without reporting. */ | |
1927 | ||
1928 | static void | |
94bedb42 TT |
1929 | remote_pass_signals (struct target_ops *self, |
1930 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1931 | { |
4082afcc | 1932 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1933 | { |
1934 | char *pass_packet, *p; | |
89be2091 | 1935 | int count = 0, i; |
747dc59d | 1936 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1937 | |
1938 | gdb_assert (numsigs < 256); | |
1939 | for (i = 0; i < numsigs; i++) | |
1940 | { | |
2455069d | 1941 | if (pass_signals[i]) |
89be2091 DJ |
1942 | count++; |
1943 | } | |
224c3ddb | 1944 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
1945 | strcpy (pass_packet, "QPassSignals:"); |
1946 | p = pass_packet + strlen (pass_packet); | |
1947 | for (i = 0; i < numsigs; i++) | |
1948 | { | |
2455069d | 1949 | if (pass_signals[i]) |
89be2091 DJ |
1950 | { |
1951 | if (i >= 16) | |
1952 | *p++ = tohex (i >> 4); | |
1953 | *p++ = tohex (i & 15); | |
1954 | if (count) | |
1955 | *p++ = ';'; | |
1956 | else | |
1957 | break; | |
1958 | count--; | |
1959 | } | |
1960 | } | |
1961 | *p = 0; | |
747dc59d | 1962 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1963 | { |
89be2091 DJ |
1964 | putpkt (pass_packet); |
1965 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1966 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1967 | if (rs->last_pass_packet) |
1968 | xfree (rs->last_pass_packet); | |
1969 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1970 | } |
1971 | else | |
1972 | xfree (pass_packet); | |
1973 | } | |
1974 | } | |
1975 | ||
9b224c5e PA |
1976 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1977 | signals it should pass through to the inferior when detaching. */ | |
1978 | ||
1979 | static void | |
daf5e9b6 TT |
1980 | remote_program_signals (struct target_ops *self, |
1981 | int numsigs, unsigned char *signals) | |
9b224c5e | 1982 | { |
4082afcc | 1983 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1984 | { |
1985 | char *packet, *p; | |
1986 | int count = 0, i; | |
5e4a05c4 | 1987 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1988 | |
1989 | gdb_assert (numsigs < 256); | |
1990 | for (i = 0; i < numsigs; i++) | |
1991 | { | |
1992 | if (signals[i]) | |
1993 | count++; | |
1994 | } | |
224c3ddb | 1995 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
1996 | strcpy (packet, "QProgramSignals:"); |
1997 | p = packet + strlen (packet); | |
1998 | for (i = 0; i < numsigs; i++) | |
1999 | { | |
2000 | if (signal_pass_state (i)) | |
2001 | { | |
2002 | if (i >= 16) | |
2003 | *p++ = tohex (i >> 4); | |
2004 | *p++ = tohex (i & 15); | |
2005 | if (count) | |
2006 | *p++ = ';'; | |
2007 | else | |
2008 | break; | |
2009 | count--; | |
2010 | } | |
2011 | } | |
2012 | *p = 0; | |
5e4a05c4 TT |
2013 | if (!rs->last_program_signals_packet |
2014 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2015 | { |
9b224c5e PA |
2016 | putpkt (packet); |
2017 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 2018 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2019 | xfree (rs->last_program_signals_packet); |
2020 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2021 | } |
2022 | else | |
2023 | xfree (packet); | |
2024 | } | |
2025 | } | |
2026 | ||
79d7f229 PA |
2027 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2028 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2029 | thread. If GEN is set, set the general thread, if not, then set | |
2030 | the step/continue thread. */ | |
c906108c | 2031 | static void |
79d7f229 | 2032 | set_thread (struct ptid ptid, int gen) |
c906108c | 2033 | { |
d01949b6 | 2034 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2035 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 2036 | char *buf = rs->buf; |
79d7f229 | 2037 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 2038 | |
79d7f229 | 2039 | if (ptid_equal (state, ptid)) |
c906108c SS |
2040 | return; |
2041 | ||
79d7f229 PA |
2042 | *buf++ = 'H'; |
2043 | *buf++ = gen ? 'g' : 'c'; | |
2044 | if (ptid_equal (ptid, magic_null_ptid)) | |
2045 | xsnprintf (buf, endbuf - buf, "0"); | |
2046 | else if (ptid_equal (ptid, any_thread_ptid)) | |
2047 | xsnprintf (buf, endbuf - buf, "0"); | |
2048 | else if (ptid_equal (ptid, minus_one_ptid)) | |
2049 | xsnprintf (buf, endbuf - buf, "-1"); | |
2050 | else | |
82f73884 | 2051 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2052 | putpkt (rs->buf); |
6d820c5c | 2053 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2054 | if (gen) |
47f8a51d | 2055 | rs->general_thread = ptid; |
c906108c | 2056 | else |
47f8a51d | 2057 | rs->continue_thread = ptid; |
c906108c | 2058 | } |
79d7f229 PA |
2059 | |
2060 | static void | |
2061 | set_general_thread (struct ptid ptid) | |
2062 | { | |
2063 | set_thread (ptid, 1); | |
2064 | } | |
2065 | ||
2066 | static void | |
2067 | set_continue_thread (struct ptid ptid) | |
2068 | { | |
2069 | set_thread (ptid, 0); | |
2070 | } | |
2071 | ||
3c9c4b83 PA |
2072 | /* Change the remote current process. Which thread within the process |
2073 | ends up selected isn't important, as long as it is the same process | |
2074 | as what INFERIOR_PTID points to. | |
2075 | ||
2076 | This comes from that fact that there is no explicit notion of | |
2077 | "selected process" in the protocol. The selected process for | |
2078 | general operations is the process the selected general thread | |
2079 | belongs to. */ | |
2080 | ||
2081 | static void | |
2082 | set_general_process (void) | |
2083 | { | |
2084 | struct remote_state *rs = get_remote_state (); | |
2085 | ||
2086 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 2087 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
2088 | return; |
2089 | ||
2090 | /* We only need to change the remote current thread if it's pointing | |
2091 | at some other process. */ | |
47f8a51d | 2092 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
2093 | set_general_thread (inferior_ptid); |
2094 | } | |
2095 | ||
c906108c | 2096 | \f |
7d1a114c PA |
2097 | /* Return nonzero if this is the main thread that we made up ourselves |
2098 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2099 | |
2100 | static int | |
7d1a114c | 2101 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 2102 | { |
6d820c5c | 2103 | struct remote_state *rs = get_remote_state (); |
82f73884 | 2104 | char *p, *endp; |
c906108c | 2105 | |
c0a2216e PA |
2106 | if (ptid_equal (ptid, magic_null_ptid)) |
2107 | /* The main thread is always alive. */ | |
2108 | return 1; | |
2109 | ||
ba348170 | 2110 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
2111 | /* The main thread is always alive. This can happen after a |
2112 | vAttach, if the remote side doesn't support | |
2113 | multi-threading. */ | |
2114 | return 1; | |
2115 | ||
7d1a114c PA |
2116 | return 0; |
2117 | } | |
2118 | ||
2119 | /* Return nonzero if the thread PTID is still alive on the remote | |
2120 | system. */ | |
2121 | ||
2122 | static int | |
2123 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2124 | { | |
2125 | struct remote_state *rs = get_remote_state (); | |
2126 | char *p, *endp; | |
2127 | ||
2128 | /* Check if this is a thread that we made up ourselves to model | |
2129 | non-threaded targets as single-threaded. */ | |
2130 | if (remote_thread_always_alive (ops, ptid)) | |
2131 | return 1; | |
2132 | ||
82f73884 PA |
2133 | p = rs->buf; |
2134 | endp = rs->buf + get_remote_packet_size (); | |
2135 | ||
2136 | *p++ = 'T'; | |
2137 | write_ptid (p, endp, ptid); | |
2138 | ||
2e9f7625 | 2139 | putpkt (rs->buf); |
6d820c5c | 2140 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2141 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2142 | } |
2143 | ||
2144 | /* About these extended threadlist and threadinfo packets. They are | |
2145 | variable length packets but, the fields within them are often fixed | |
2146 | length. They are redundent enough to send over UDP as is the | |
2147 | remote protocol in general. There is a matching unit test module | |
2148 | in libstub. */ | |
2149 | ||
23860348 | 2150 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2151 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2152 | changable. */ |
cce74817 JM |
2153 | |
2154 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2155 | Plan to fix this. */ |
cce74817 | 2156 | |
23860348 | 2157 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2158 | |
9d1f7ab2 | 2159 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2160 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2161 | |
2162 | struct gdb_ext_thread_info | |
c5aa993b | 2163 | { |
23860348 | 2164 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2165 | int active; /* Has state interesting to GDB? |
23860348 | 2166 | regs, stack. */ |
2bc416ba | 2167 | char display[256]; /* Brief state display, name, |
cedea757 | 2168 | blocked/suspended. */ |
23860348 | 2169 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2170 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2171 | whatever. */ |
c5aa993b | 2172 | }; |
cce74817 JM |
2173 | |
2174 | /* The volume of remote transfers can be limited by submitting | |
2175 | a mask containing bits specifying the desired information. | |
2176 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2177 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2178 | |
2179 | #define TAG_THREADID 1 | |
2180 | #define TAG_EXISTS 2 | |
2181 | #define TAG_DISPLAY 4 | |
2182 | #define TAG_THREADNAME 8 | |
c5aa993b | 2183 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2184 | |
23860348 | 2185 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2186 | |
a14ed312 | 2187 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2188 | |
a14ed312 | 2189 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2190 | |
a14ed312 | 2191 | static char *pack_int (char *buf, int value); |
cce74817 | 2192 | |
a14ed312 | 2193 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2194 | |
a14ed312 | 2195 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2196 | |
23860348 | 2197 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2198 | |
23860348 | 2199 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2200 | |
23860348 | 2201 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2202 | |
23860348 | 2203 | static int threadref_to_int (threadref *ref); |
cce74817 | 2204 | |
23860348 | 2205 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2206 | |
23860348 | 2207 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2208 | |
2bc416ba | 2209 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2210 | threadref *id); |
cce74817 | 2211 | |
a14ed312 | 2212 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2213 | threadref *expectedref, |
a14ed312 KB |
2214 | struct gdb_ext_thread_info |
2215 | *info); | |
cce74817 JM |
2216 | |
2217 | ||
2bc416ba | 2218 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2219 | int fieldset, /*TAG mask */ |
a14ed312 | 2220 | struct gdb_ext_thread_info *info); |
cce74817 | 2221 | |
a14ed312 KB |
2222 | static char *pack_threadlist_request (char *pkt, int startflag, |
2223 | int threadcount, | |
23860348 | 2224 | threadref *nextthread); |
cce74817 | 2225 | |
a14ed312 KB |
2226 | static int parse_threadlist_response (char *pkt, |
2227 | int result_limit, | |
23860348 | 2228 | threadref *original_echo, |
2bc416ba | 2229 | threadref *resultlist, |
23860348 | 2230 | int *doneflag); |
cce74817 | 2231 | |
a14ed312 | 2232 | static int remote_get_threadlist (int startflag, |
23860348 | 2233 | threadref *nextthread, |
a14ed312 KB |
2234 | int result_limit, |
2235 | int *done, | |
2bc416ba | 2236 | int *result_count, |
23860348 | 2237 | threadref *threadlist); |
cce74817 | 2238 | |
23860348 | 2239 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2240 | |
a14ed312 KB |
2241 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2242 | void *context, int looplimit); | |
cce74817 | 2243 | |
23860348 | 2244 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2245 | |
82f73884 PA |
2246 | |
2247 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2248 | buffer we're allowed to write to. Returns | |
2249 | BUF+CHARACTERS_WRITTEN. */ | |
2250 | ||
2251 | static char * | |
2252 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2253 | { | |
2254 | int pid, tid; | |
2255 | struct remote_state *rs = get_remote_state (); | |
2256 | ||
2257 | if (remote_multi_process_p (rs)) | |
2258 | { | |
2259 | pid = ptid_get_pid (ptid); | |
2260 | if (pid < 0) | |
2261 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2262 | else | |
2263 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2264 | } | |
ba348170 | 2265 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2266 | if (tid < 0) |
2267 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2268 | else | |
2269 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2270 | ||
2271 | return buf; | |
2272 | } | |
2273 | ||
2274 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2275 | passed the last parsed char. Returns null_ptid on error. */ | |
2276 | ||
2277 | static ptid_t | |
2278 | read_ptid (char *buf, char **obuf) | |
2279 | { | |
2280 | char *p = buf; | |
2281 | char *pp; | |
2282 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2283 | |
2284 | if (*p == 'p') | |
2285 | { | |
2286 | /* Multi-process ptid. */ | |
2287 | pp = unpack_varlen_hex (p + 1, &pid); | |
2288 | if (*pp != '.') | |
b37520b6 | 2289 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2290 | |
2291 | p = pp; | |
2292 | pp = unpack_varlen_hex (p + 1, &tid); | |
2293 | if (obuf) | |
2294 | *obuf = pp; | |
ba348170 | 2295 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2296 | } |
2297 | ||
2298 | /* No multi-process. Just a tid. */ | |
2299 | pp = unpack_varlen_hex (p, &tid); | |
2300 | ||
c9f35b34 KB |
2301 | /* Return null_ptid when no thread id is found. */ |
2302 | if (p == pp) | |
2303 | { | |
2304 | if (obuf) | |
2305 | *obuf = pp; | |
2306 | return null_ptid; | |
2307 | } | |
2308 | ||
82f73884 | 2309 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2310 | what's in inferior_ptid, unless it's null at this point. If so, |
2311 | then since there's no way to know the pid of the reported | |
2312 | threads, use the magic number. */ | |
2313 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2314 | pid = ptid_get_pid (magic_null_ptid); | |
2315 | else | |
2316 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2317 | |
2318 | if (obuf) | |
2319 | *obuf = pp; | |
ba348170 | 2320 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2321 | } |
2322 | ||
c906108c | 2323 | static int |
fba45db2 | 2324 | stubhex (int ch) |
c906108c SS |
2325 | { |
2326 | if (ch >= 'a' && ch <= 'f') | |
2327 | return ch - 'a' + 10; | |
2328 | if (ch >= '0' && ch <= '9') | |
2329 | return ch - '0'; | |
2330 | if (ch >= 'A' && ch <= 'F') | |
2331 | return ch - 'A' + 10; | |
2332 | return -1; | |
2333 | } | |
2334 | ||
2335 | static int | |
fba45db2 | 2336 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2337 | { |
2338 | int nibble; | |
2339 | int retval = 0; | |
2340 | ||
2341 | while (fieldlength) | |
2342 | { | |
2343 | nibble = stubhex (*buff++); | |
2344 | retval |= nibble; | |
2345 | fieldlength--; | |
2346 | if (fieldlength) | |
2347 | retval = retval << 4; | |
2348 | } | |
2349 | return retval; | |
2350 | } | |
2351 | ||
c906108c | 2352 | static char * |
fba45db2 | 2353 | unpack_nibble (char *buf, int *val) |
c906108c | 2354 | { |
b7589f7d | 2355 | *val = fromhex (*buf++); |
c906108c SS |
2356 | return buf; |
2357 | } | |
2358 | ||
c906108c | 2359 | static char * |
fba45db2 | 2360 | unpack_byte (char *buf, int *value) |
c906108c SS |
2361 | { |
2362 | *value = stub_unpack_int (buf, 2); | |
2363 | return buf + 2; | |
2364 | } | |
2365 | ||
2366 | static char * | |
fba45db2 | 2367 | pack_int (char *buf, int value) |
c906108c SS |
2368 | { |
2369 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2370 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2371 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2372 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2373 | return buf; | |
2374 | } | |
2375 | ||
2376 | static char * | |
fba45db2 | 2377 | unpack_int (char *buf, int *value) |
c906108c SS |
2378 | { |
2379 | *value = stub_unpack_int (buf, 8); | |
2380 | return buf + 8; | |
2381 | } | |
2382 | ||
23860348 | 2383 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2384 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2385 | |
2386 | static char * | |
fba45db2 | 2387 | pack_string (char *pkt, char *string) |
c906108c SS |
2388 | { |
2389 | char ch; | |
2390 | int len; | |
2391 | ||
2392 | len = strlen (string); | |
2393 | if (len > 200) | |
23860348 | 2394 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2395 | pkt = pack_hex_byte (pkt, len); |
2396 | while (len-- > 0) | |
2397 | { | |
2398 | ch = *string++; | |
2399 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2400 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2401 | *pkt++ = ch; |
2402 | } | |
2403 | return pkt; | |
2404 | } | |
2405 | #endif /* 0 (unused) */ | |
2406 | ||
2407 | static char * | |
fba45db2 | 2408 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2409 | { |
2410 | while (length--) | |
2411 | *dest++ = *src++; | |
2412 | *dest = '\0'; | |
2413 | return src; | |
2414 | } | |
2415 | ||
2416 | static char * | |
fba45db2 | 2417 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2418 | { |
2419 | char *limit; | |
2420 | unsigned char *altid; | |
2421 | ||
2422 | altid = (unsigned char *) id; | |
2423 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2424 | while (pkt < limit) | |
2425 | pkt = pack_hex_byte (pkt, *altid++); | |
2426 | return pkt; | |
2427 | } | |
2428 | ||
2429 | ||
2430 | static char * | |
fba45db2 | 2431 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2432 | { |
2433 | char *altref; | |
2434 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2435 | int x, y; | |
2436 | ||
2437 | altref = (char *) id; | |
2438 | ||
2439 | while (inbuf < limit) | |
2440 | { | |
2441 | x = stubhex (*inbuf++); | |
2442 | y = stubhex (*inbuf++); | |
2443 | *altref++ = (x << 4) | y; | |
2444 | } | |
2445 | return inbuf; | |
2446 | } | |
2447 | ||
2448 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2449 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2450 | to use 64bit thread references internally. This is an adapter |
2451 | function. */ | |
2452 | ||
2453 | void | |
fba45db2 | 2454 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2455 | { |
2456 | unsigned char *scan; | |
2457 | ||
2458 | scan = (unsigned char *) id; | |
2459 | { | |
2460 | int i = 4; | |
2461 | while (i--) | |
2462 | *scan++ = 0; | |
2463 | } | |
2464 | *scan++ = (value >> 24) & 0xff; | |
2465 | *scan++ = (value >> 16) & 0xff; | |
2466 | *scan++ = (value >> 8) & 0xff; | |
2467 | *scan++ = (value & 0xff); | |
2468 | } | |
2469 | ||
2470 | static int | |
fba45db2 | 2471 | threadref_to_int (threadref *ref) |
c906108c SS |
2472 | { |
2473 | int i, value = 0; | |
2474 | unsigned char *scan; | |
2475 | ||
cfd77fa1 | 2476 | scan = *ref; |
c906108c SS |
2477 | scan += 4; |
2478 | i = 4; | |
2479 | while (i-- > 0) | |
2480 | value = (value << 8) | ((*scan++) & 0xff); | |
2481 | return value; | |
2482 | } | |
2483 | ||
2484 | static void | |
fba45db2 | 2485 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2486 | { |
2487 | int i; | |
2488 | unsigned char *csrc, *cdest; | |
2489 | ||
2490 | csrc = (unsigned char *) src; | |
2491 | cdest = (unsigned char *) dest; | |
2492 | i = 8; | |
2493 | while (i--) | |
2494 | *cdest++ = *csrc++; | |
2495 | } | |
2496 | ||
2497 | static int | |
fba45db2 | 2498 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2499 | { |
23860348 | 2500 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2501 | #if 0 |
2502 | unsigned char *srcp, *destp; | |
2503 | int i, result; | |
2504 | srcp = (char *) src; | |
2505 | destp = (char *) dest; | |
2506 | ||
2507 | result = 1; | |
2508 | while (i-- > 0) | |
2509 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2510 | return result; | |
2511 | #endif | |
2512 | return 1; | |
2513 | } | |
2514 | ||
2515 | /* | |
c5aa993b JM |
2516 | threadid:1, # always request threadid |
2517 | context_exists:2, | |
2518 | display:4, | |
2519 | unique_name:8, | |
2520 | more_display:16 | |
2521 | */ | |
c906108c SS |
2522 | |
2523 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2524 | ||
2525 | static char * | |
fba45db2 | 2526 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2527 | { |
23860348 MS |
2528 | *pkt++ = 'q'; /* Info Query */ |
2529 | *pkt++ = 'P'; /* process or thread info */ | |
2530 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2531 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2532 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2533 | return pkt; |
2534 | } | |
2535 | ||
23860348 | 2536 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2537 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2538 | add more fields as time goes by. */ |
c906108c | 2539 | |
23860348 | 2540 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2541 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2542 | fetch registers and its stack? */ |
c5aa993b | 2543 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2544 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2545 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2546 | the process. */ |
c906108c SS |
2547 | |
2548 | static int | |
fba45db2 KB |
2549 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2550 | struct gdb_ext_thread_info *info) | |
c906108c | 2551 | { |
d01949b6 | 2552 | struct remote_state *rs = get_remote_state (); |
c906108c | 2553 | int mask, length; |
cfd77fa1 | 2554 | int tag; |
c906108c | 2555 | threadref ref; |
6d820c5c | 2556 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2557 | int retval = 1; |
2558 | ||
23860348 | 2559 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2560 | info->active = 0; |
2561 | info->display[0] = '\0'; | |
2562 | info->shortname[0] = '\0'; | |
2563 | info->more_display[0] = '\0'; | |
2564 | ||
23860348 MS |
2565 | /* Assume the characters indicating the packet type have been |
2566 | stripped. */ | |
c906108c SS |
2567 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2568 | pkt = unpack_threadid (pkt, &ref); | |
2569 | ||
2570 | if (mask == 0) | |
8a3fe4f8 | 2571 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2572 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2573 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2574 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2575 | return 0; |
2576 | } | |
2577 | copy_threadref (&info->threadid, &ref); | |
2578 | ||
23860348 | 2579 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2580 | |
23860348 MS |
2581 | /* Packets are terminated with nulls. */ |
2582 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2583 | { |
2584 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2585 | pkt = unpack_byte (pkt, &length); /* length */ |
2586 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2587 | { |
8a3fe4f8 | 2588 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2589 | retval = 0; |
2590 | break; | |
2591 | } | |
2592 | if (tag == TAG_THREADID) | |
2593 | { | |
2594 | if (length != 16) | |
2595 | { | |
8a3fe4f8 | 2596 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2597 | retval = 0; |
2598 | break; | |
2599 | } | |
2600 | pkt = unpack_threadid (pkt, &ref); | |
2601 | mask = mask & ~TAG_THREADID; | |
2602 | continue; | |
2603 | } | |
2604 | if (tag == TAG_EXISTS) | |
2605 | { | |
2606 | info->active = stub_unpack_int (pkt, length); | |
2607 | pkt += length; | |
2608 | mask = mask & ~(TAG_EXISTS); | |
2609 | if (length > 8) | |
2610 | { | |
8a3fe4f8 | 2611 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2612 | retval = 0; |
2613 | break; | |
2614 | } | |
2615 | continue; | |
2616 | } | |
2617 | if (tag == TAG_THREADNAME) | |
2618 | { | |
2619 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2620 | mask = mask & ~TAG_THREADNAME; | |
2621 | continue; | |
2622 | } | |
2623 | if (tag == TAG_DISPLAY) | |
2624 | { | |
2625 | pkt = unpack_string (pkt, &info->display[0], length); | |
2626 | mask = mask & ~TAG_DISPLAY; | |
2627 | continue; | |
2628 | } | |
2629 | if (tag == TAG_MOREDISPLAY) | |
2630 | { | |
2631 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2632 | mask = mask & ~TAG_MOREDISPLAY; | |
2633 | continue; | |
2634 | } | |
8a3fe4f8 | 2635 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2636 | break; /* Not a tag we know about. */ |
c906108c SS |
2637 | } |
2638 | return retval; | |
2639 | } | |
2640 | ||
2641 | static int | |
fba45db2 KB |
2642 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2643 | struct gdb_ext_thread_info *info) | |
c906108c | 2644 | { |
d01949b6 | 2645 | struct remote_state *rs = get_remote_state (); |
c906108c | 2646 | int result; |
c906108c | 2647 | |
2e9f7625 DJ |
2648 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2649 | putpkt (rs->buf); | |
6d820c5c | 2650 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2651 | |
2652 | if (rs->buf[0] == '\0') | |
2653 | return 0; | |
2654 | ||
2e9f7625 | 2655 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2656 | threadid, info); |
c906108c SS |
2657 | return result; |
2658 | } | |
2659 | ||
c906108c SS |
2660 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2661 | ||
2662 | static char * | |
fba45db2 KB |
2663 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2664 | threadref *nextthread) | |
c906108c SS |
2665 | { |
2666 | *pkt++ = 'q'; /* info query packet */ | |
2667 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2668 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2669 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2670 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2671 | *pkt = '\0'; | |
2672 | return pkt; | |
2673 | } | |
2674 | ||
2675 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2676 | ||
2677 | static int | |
fba45db2 KB |
2678 | parse_threadlist_response (char *pkt, int result_limit, |
2679 | threadref *original_echo, threadref *resultlist, | |
2680 | int *doneflag) | |
c906108c | 2681 | { |
d01949b6 | 2682 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2683 | char *limit; |
2684 | int count, resultcount, done; | |
2685 | ||
2686 | resultcount = 0; | |
2687 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2688 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2689 | /* done parse past here */ |
c906108c SS |
2690 | pkt = unpack_byte (pkt, &count); /* count field */ |
2691 | pkt = unpack_nibble (pkt, &done); | |
2692 | /* The first threadid is the argument threadid. */ | |
2693 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2694 | while ((count-- > 0) && (pkt < limit)) | |
2695 | { | |
2696 | pkt = unpack_threadid (pkt, resultlist++); | |
2697 | if (resultcount++ >= result_limit) | |
2698 | break; | |
2699 | } | |
2700 | if (doneflag) | |
2701 | *doneflag = done; | |
2702 | return resultcount; | |
2703 | } | |
2704 | ||
6dc54d91 PA |
2705 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2706 | qL packet is not supported, 0 on error and 1 on success. */ | |
2707 | ||
c906108c | 2708 | static int |
fba45db2 KB |
2709 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2710 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2711 | { |
d01949b6 | 2712 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2713 | int result = 1; |
2714 | ||
23860348 | 2715 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2716 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2717 | >= get_remote_packet_size ()) | |
ea9c271d | 2718 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2719 | |
6d820c5c DJ |
2720 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2721 | putpkt (rs->buf); | |
2722 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2723 | if (*rs->buf == '\0') |
6dc54d91 PA |
2724 | { |
2725 | /* Packet not supported. */ | |
2726 | return -1; | |
2727 | } | |
2728 | ||
2729 | *result_count = | |
2730 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2731 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2732 | |
0d031856 | 2733 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2734 | { |
23860348 MS |
2735 | /* FIXME: This is a good reason to drop the packet. */ |
2736 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2737 | /* Possabilities : |
2738 | retransmit immediatly - race conditions | |
2739 | retransmit after timeout - yes | |
2740 | exit | |
2741 | wait for packet, then exit | |
2742 | */ | |
8a3fe4f8 | 2743 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2744 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2745 | } |
2746 | if (*result_count <= 0) | |
2747 | { | |
2748 | if (*done != 1) | |
2749 | { | |
8a3fe4f8 | 2750 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2751 | result = 0; |
2752 | } | |
2753 | return result; /* break; */ | |
2754 | } | |
2755 | if (*result_count > result_limit) | |
2756 | { | |
2757 | *result_count = 0; | |
8a3fe4f8 | 2758 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2759 | return 0; |
2760 | } | |
2761 | return result; | |
2762 | } | |
2763 | ||
6dc54d91 PA |
2764 | /* Fetch the list of remote threads, with the qL packet, and call |
2765 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2766 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2767 | STEPFUNCTION returns false. If the packet is not supported, | |
2768 | returns -1. */ | |
c906108c | 2769 | |
c906108c | 2770 | static int |
fba45db2 KB |
2771 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2772 | int looplimit) | |
c906108c | 2773 | { |
0d031856 | 2774 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2775 | int done, i, result_count; |
2776 | int startflag = 1; | |
2777 | int result = 1; | |
2778 | int loopcount = 0; | |
c906108c SS |
2779 | |
2780 | done = 0; | |
2781 | while (!done) | |
2782 | { | |
2783 | if (loopcount++ > looplimit) | |
2784 | { | |
2785 | result = 0; | |
8a3fe4f8 | 2786 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2787 | break; |
2788 | } | |
6dc54d91 PA |
2789 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2790 | MAXTHREADLISTRESULTS, | |
2791 | &done, &result_count, | |
2792 | rs->resultthreadlist); | |
2793 | if (result <= 0) | |
2794 | break; | |
23860348 | 2795 | /* Clear for later iterations. */ |
c906108c SS |
2796 | startflag = 0; |
2797 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2798 | if (result_count >= 1) | |
0d031856 TT |
2799 | copy_threadref (&rs->nextthread, |
2800 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2801 | i = 0; |
2802 | while (result_count--) | |
6dc54d91 PA |
2803 | { |
2804 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2805 | { | |
2806 | result = 0; | |
2807 | break; | |
2808 | } | |
2809 | } | |
c906108c SS |
2810 | } |
2811 | return result; | |
2812 | } | |
2813 | ||
6dc54d91 PA |
2814 | /* A thread found on the remote target. */ |
2815 | ||
2816 | typedef struct thread_item | |
2817 | { | |
2818 | /* The thread's PTID. */ | |
2819 | ptid_t ptid; | |
2820 | ||
2821 | /* The thread's extra info. May be NULL. */ | |
2822 | char *extra; | |
2823 | ||
2824 | /* The core the thread was running on. -1 if not known. */ | |
2825 | int core; | |
2826 | } thread_item_t; | |
2827 | DEF_VEC_O(thread_item_t); | |
2828 | ||
2829 | /* Context passed around to the various methods listing remote | |
2830 | threads. As new threads are found, they're added to the ITEMS | |
2831 | vector. */ | |
2832 | ||
2833 | struct threads_listing_context | |
2834 | { | |
2835 | /* The threads found on the remote target. */ | |
2836 | VEC (thread_item_t) *items; | |
2837 | }; | |
2838 | ||
80134cf5 PA |
2839 | /* Discard the contents of the constructed thread listing context. */ |
2840 | ||
2841 | static void | |
2842 | clear_threads_listing_context (void *p) | |
2843 | { | |
19ba03f4 SM |
2844 | struct threads_listing_context *context |
2845 | = (struct threads_listing_context *) p; | |
80134cf5 PA |
2846 | int i; |
2847 | struct thread_item *item; | |
2848 | ||
2849 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2850 | xfree (item->extra); | |
2851 | ||
2852 | VEC_free (thread_item_t, context->items); | |
2853 | } | |
2854 | ||
cbb8991c DB |
2855 | /* Remove the thread specified as the related_pid field of WS |
2856 | from the CONTEXT list. */ | |
2857 | ||
2858 | static void | |
2859 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2860 | struct threads_listing_context *context) | |
2861 | { | |
2862 | struct thread_item *item; | |
2863 | int i; | |
2864 | ptid_t child_ptid = ws->value.related_pid; | |
2865 | ||
2866 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2867 | { | |
2868 | if (ptid_equal (item->ptid, child_ptid)) | |
2869 | { | |
2870 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2871 | break; | |
2872 | } | |
2873 | } | |
2874 | } | |
2875 | ||
c906108c | 2876 | static int |
6dc54d91 | 2877 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2878 | { |
19ba03f4 SM |
2879 | struct threads_listing_context *context |
2880 | = (struct threads_listing_context *) data; | |
6dc54d91 | 2881 | struct thread_item item; |
79d7f229 | 2882 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2883 | |
6dc54d91 PA |
2884 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2885 | item.core = -1; | |
2886 | item.extra = NULL; | |
2887 | ||
2888 | VEC_safe_push (thread_item_t, context->items, &item); | |
2889 | ||
c906108c SS |
2890 | return 1; /* continue iterator */ |
2891 | } | |
2892 | ||
2893 | #define CRAZY_MAX_THREADS 1000 | |
2894 | ||
39f77062 KB |
2895 | static ptid_t |
2896 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2897 | { |
d01949b6 | 2898 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2899 | |
2900 | putpkt ("qC"); | |
6d820c5c | 2901 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2902 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2903 | { |
2904 | char *obuf; | |
2905 | ptid_t result; | |
2906 | ||
2907 | result = read_ptid (&rs->buf[2], &obuf); | |
2908 | if (*obuf != '\0' && remote_debug) | |
2909 | fprintf_unfiltered (gdb_stdlog, | |
2910 | "warning: garbage in qC reply\n"); | |
2911 | ||
2912 | return result; | |
2913 | } | |
c906108c SS |
2914 | else |
2915 | return oldpid; | |
2916 | } | |
2917 | ||
6dc54d91 | 2918 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2919 | |
6dc54d91 PA |
2920 | static int |
2921 | remote_get_threads_with_ql (struct target_ops *ops, | |
2922 | struct threads_listing_context *context) | |
c906108c | 2923 | { |
6dc54d91 PA |
2924 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2925 | CRAZY_MAX_THREADS) >= 0) | |
2926 | return 1; | |
2927 | ||
2928 | return 0; | |
c906108c SS |
2929 | } |
2930 | ||
dc146f7c VP |
2931 | #if defined(HAVE_LIBEXPAT) |
2932 | ||
dc146f7c VP |
2933 | static void |
2934 | start_thread (struct gdb_xml_parser *parser, | |
2935 | const struct gdb_xml_element *element, | |
2936 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2937 | { | |
19ba03f4 SM |
2938 | struct threads_listing_context *data |
2939 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
2940 | |
2941 | struct thread_item item; | |
2942 | char *id; | |
3d2c1d41 | 2943 | struct gdb_xml_value *attr; |
dc146f7c | 2944 | |
19ba03f4 | 2945 | id = (char *) xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2946 | item.ptid = read_ptid (id, NULL); |
2947 | ||
3d2c1d41 PA |
2948 | attr = xml_find_attribute (attributes, "core"); |
2949 | if (attr != NULL) | |
2950 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2951 | else |
2952 | item.core = -1; | |
2953 | ||
2954 | item.extra = 0; | |
2955 | ||
2956 | VEC_safe_push (thread_item_t, data->items, &item); | |
2957 | } | |
2958 | ||
2959 | static void | |
2960 | end_thread (struct gdb_xml_parser *parser, | |
2961 | const struct gdb_xml_element *element, | |
2962 | void *user_data, const char *body_text) | |
2963 | { | |
19ba03f4 SM |
2964 | struct threads_listing_context *data |
2965 | = (struct threads_listing_context *) user_data; | |
dc146f7c VP |
2966 | |
2967 | if (body_text && *body_text) | |
2ae2a0b7 | 2968 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2969 | } |
2970 | ||
2971 | const struct gdb_xml_attribute thread_attributes[] = { | |
2972 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2973 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2974 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2975 | }; | |
2976 | ||
2977 | const struct gdb_xml_element thread_children[] = { | |
2978 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2979 | }; | |
2980 | ||
2981 | const struct gdb_xml_element threads_children[] = { | |
2982 | { "thread", thread_attributes, thread_children, | |
2983 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2984 | start_thread, end_thread }, | |
2985 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2986 | }; | |
2987 | ||
2988 | const struct gdb_xml_element threads_elements[] = { | |
2989 | { "threads", NULL, threads_children, | |
2990 | GDB_XML_EF_NONE, NULL, NULL }, | |
2991 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2992 | }; | |
2993 | ||
2994 | #endif | |
2995 | ||
6dc54d91 | 2996 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2997 | |
6dc54d91 PA |
2998 | static int |
2999 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
3000 | struct threads_listing_context *context) | |
0f71a2f6 | 3001 | { |
dc146f7c | 3002 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3003 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3004 | { |
6dc54d91 | 3005 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 3006 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 3007 | |
6dc54d91 | 3008 | if (xml != NULL && *xml != '\0') |
dc146f7c | 3009 | { |
6dc54d91 PA |
3010 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
3011 | threads_elements, xml, context); | |
dc146f7c VP |
3012 | } |
3013 | ||
3014 | do_cleanups (back_to); | |
6dc54d91 | 3015 | return 1; |
dc146f7c VP |
3016 | } |
3017 | #endif | |
3018 | ||
6dc54d91 PA |
3019 | return 0; |
3020 | } | |
3021 | ||
3022 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3023 | ||
3024 | static int | |
3025 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
3026 | struct threads_listing_context *context) | |
3027 | { | |
3028 | struct remote_state *rs = get_remote_state (); | |
3029 | ||
b80fafe3 | 3030 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3031 | { |
6dc54d91 PA |
3032 | char *bufp; |
3033 | ||
9d1f7ab2 | 3034 | putpkt ("qfThreadInfo"); |
6d820c5c | 3035 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3036 | bufp = rs->buf; |
9d1f7ab2 | 3037 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3038 | { |
9d1f7ab2 MS |
3039 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3040 | { | |
3041 | do | |
3042 | { | |
6dc54d91 PA |
3043 | struct thread_item item; |
3044 | ||
3045 | item.ptid = read_ptid (bufp, &bufp); | |
3046 | item.core = -1; | |
3047 | item.extra = NULL; | |
3048 | ||
3049 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
3050 | } |
3051 | while (*bufp++ == ','); /* comma-separated list */ | |
3052 | putpkt ("qsThreadInfo"); | |
6d820c5c | 3053 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 3054 | bufp = rs->buf; |
9d1f7ab2 | 3055 | } |
6dc54d91 PA |
3056 | return 1; |
3057 | } | |
3058 | else | |
3059 | { | |
3060 | /* Packet not recognized. */ | |
3061 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3062 | } |
3063 | } | |
3064 | ||
6dc54d91 PA |
3065 | return 0; |
3066 | } | |
3067 | ||
e8032dde | 3068 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3069 | targets. */ |
3070 | ||
3071 | static void | |
e8032dde | 3072 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
3073 | { |
3074 | struct remote_state *rs = get_remote_state (); | |
3075 | struct threads_listing_context context; | |
3076 | struct cleanup *old_chain; | |
ab970af1 | 3077 | int got_list = 0; |
e8032dde | 3078 | |
6dc54d91 PA |
3079 | context.items = NULL; |
3080 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
3081 | ||
3082 | /* We have a few different mechanisms to fetch the thread list. Try | |
3083 | them all, starting with the most preferred one first, falling | |
3084 | back to older methods. */ | |
3085 | if (remote_get_threads_with_qxfer (ops, &context) | |
3086 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
3087 | || remote_get_threads_with_ql (ops, &context)) | |
3088 | { | |
3089 | int i; | |
3090 | struct thread_item *item; | |
ab970af1 PA |
3091 | struct thread_info *tp, *tmp; |
3092 | ||
3093 | got_list = 1; | |
3094 | ||
7d1a114c PA |
3095 | if (VEC_empty (thread_item_t, context.items) |
3096 | && remote_thread_always_alive (ops, inferior_ptid)) | |
3097 | { | |
3098 | /* Some targets don't really support threads, but still | |
3099 | reply an (empty) thread list in response to the thread | |
3100 | listing packets, instead of replying "packet not | |
3101 | supported". Exit early so we don't delete the main | |
3102 | thread. */ | |
3103 | do_cleanups (old_chain); | |
3104 | return; | |
3105 | } | |
3106 | ||
ab970af1 PA |
3107 | /* CONTEXT now holds the current thread list on the remote |
3108 | target end. Delete GDB-side threads no longer found on the | |
3109 | target. */ | |
8a06aea7 | 3110 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 3111 | { |
ab970af1 PA |
3112 | for (i = 0; |
3113 | VEC_iterate (thread_item_t, context.items, i, item); | |
3114 | ++i) | |
3115 | { | |
3116 | if (ptid_equal (item->ptid, tp->ptid)) | |
3117 | break; | |
3118 | } | |
3119 | ||
3120 | if (i == VEC_length (thread_item_t, context.items)) | |
3121 | { | |
3122 | /* Not found. */ | |
3123 | delete_thread (tp->ptid); | |
3124 | } | |
cbb8991c DB |
3125 | } |
3126 | ||
3127 | /* Remove any unreported fork child threads from CONTEXT so | |
3128 | that we don't interfere with follow fork, which is where | |
3129 | creation of such threads is handled. */ | |
3130 | remove_new_fork_children (&context); | |
74531fed | 3131 | |
ab970af1 | 3132 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
3133 | for (i = 0; |
3134 | VEC_iterate (thread_item_t, context.items, i, item); | |
3135 | ++i) | |
3136 | { | |
3137 | if (!ptid_equal (item->ptid, null_ptid)) | |
3138 | { | |
3139 | struct private_thread_info *info; | |
3140 | /* In non-stop mode, we assume new found threads are | |
3141 | running until proven otherwise with a stop reply. In | |
3142 | all-stop, we can only get here if all threads are | |
3143 | stopped. */ | |
3144 | int running = non_stop ? 1 : 0; | |
3145 | ||
3146 | remote_notice_new_inferior (item->ptid, running); | |
3147 | ||
3148 | info = demand_private_info (item->ptid); | |
3149 | info->core = item->core; | |
3150 | info->extra = item->extra; | |
3151 | item->extra = NULL; | |
3152 | } | |
3153 | } | |
3154 | } | |
3155 | ||
ab970af1 PA |
3156 | if (!got_list) |
3157 | { | |
3158 | /* If no thread listing method is supported, then query whether | |
3159 | each known thread is alive, one by one, with the T packet. | |
3160 | If the target doesn't support threads at all, then this is a | |
3161 | no-op. See remote_thread_alive. */ | |
3162 | prune_threads (); | |
3163 | } | |
3164 | ||
6dc54d91 | 3165 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3166 | } |
3167 | ||
802188a7 | 3168 | /* |
9d1f7ab2 MS |
3169 | * Collect a descriptive string about the given thread. |
3170 | * The target may say anything it wants to about the thread | |
3171 | * (typically info about its blocked / runnable state, name, etc.). | |
3172 | * This string will appear in the info threads display. | |
802188a7 | 3173 | * |
9d1f7ab2 MS |
3174 | * Optional: targets are not required to implement this function. |
3175 | */ | |
3176 | ||
3177 | static char * | |
c15906d8 | 3178 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3179 | { |
d01949b6 | 3180 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3181 | int result; |
3182 | int set; | |
3183 | threadref id; | |
3184 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3185 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3186 | int n = 0; /* position in display_buf */ |
3187 | ||
5d93a237 | 3188 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3189 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3190 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3191 | |
60e569b9 | 3192 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3193 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3194 | /* This is the main thread which was added by GDB. The remote |
3195 | server doesn't know about it. */ | |
3196 | return NULL; | |
3197 | ||
4082afcc | 3198 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3199 | { |
3200 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3201 | |
fe978cb0 PA |
3202 | if (info && info->priv) |
3203 | return info->priv->extra; | |
dc146f7c VP |
3204 | else |
3205 | return NULL; | |
3206 | } | |
3207 | ||
b80fafe3 | 3208 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3209 | { |
82f73884 PA |
3210 | char *b = rs->buf; |
3211 | char *endb = rs->buf + get_remote_packet_size (); | |
3212 | ||
3213 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3214 | b += strlen (b); | |
3215 | write_ptid (b, endb, tp->ptid); | |
3216 | ||
2e9f7625 | 3217 | putpkt (rs->buf); |
6d820c5c | 3218 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3219 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3220 | { |
2e9f7625 DJ |
3221 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3222 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3223 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3224 | return display_buf; |
3225 | } | |
0f71a2f6 | 3226 | } |
9d1f7ab2 MS |
3227 | |
3228 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3229 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3230 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3231 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3232 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3233 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3234 | if (threadinfo.active) | |
0f71a2f6 | 3235 | { |
9d1f7ab2 | 3236 | if (*threadinfo.shortname) |
2bc416ba | 3237 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3238 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3239 | if (*threadinfo.display) |
2bc416ba | 3240 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3241 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3242 | if (*threadinfo.more_display) |
2bc416ba | 3243 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3244 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3245 | |
3246 | if (n > 0) | |
c5aa993b | 3247 | { |
23860348 | 3248 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3249 | if (',' == display_buf[n-1]) |
3250 | display_buf[n-1] = ' '; | |
3251 | return display_buf; | |
c5aa993b | 3252 | } |
0f71a2f6 | 3253 | } |
9d1f7ab2 | 3254 | return NULL; |
0f71a2f6 | 3255 | } |
c906108c | 3256 | \f |
c5aa993b | 3257 | |
0fb4aa4b | 3258 | static int |
61fc905d | 3259 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3260 | struct static_tracepoint_marker *marker) |
3261 | { | |
3262 | struct remote_state *rs = get_remote_state (); | |
3263 | char *p = rs->buf; | |
3264 | ||
bba74b36 | 3265 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3266 | p += strlen (p); |
3267 | p += hexnumstr (p, addr); | |
3268 | putpkt (rs->buf); | |
3269 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3270 | p = rs->buf; | |
3271 | ||
3272 | if (*p == 'E') | |
3273 | error (_("Remote failure reply: %s"), p); | |
3274 | ||
3275 | if (*p++ == 'm') | |
3276 | { | |
3277 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3278 | return 1; | |
3279 | } | |
3280 | ||
3281 | return 0; | |
3282 | } | |
3283 | ||
0fb4aa4b | 3284 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3285 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3286 | const char *strid) | |
0fb4aa4b PA |
3287 | { |
3288 | struct remote_state *rs = get_remote_state (); | |
3289 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3290 | struct static_tracepoint_marker *marker = NULL; | |
3291 | struct cleanup *old_chain; | |
3292 | char *p; | |
3293 | ||
3294 | /* Ask for a first packet of static tracepoint marker | |
3295 | definition. */ | |
3296 | putpkt ("qTfSTM"); | |
3297 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3298 | p = rs->buf; | |
3299 | if (*p == 'E') | |
3300 | error (_("Remote failure reply: %s"), p); | |
3301 | ||
3302 | old_chain = make_cleanup (free_current_marker, &marker); | |
3303 | ||
3304 | while (*p++ == 'm') | |
3305 | { | |
3306 | if (marker == NULL) | |
3307 | marker = XCNEW (struct static_tracepoint_marker); | |
3308 | ||
3309 | do | |
3310 | { | |
3311 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3312 | ||
3313 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3314 | { | |
3315 | VEC_safe_push (static_tracepoint_marker_p, | |
3316 | markers, marker); | |
3317 | marker = NULL; | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | release_static_tracepoint_marker (marker); | |
3322 | memset (marker, 0, sizeof (*marker)); | |
3323 | } | |
3324 | } | |
3325 | while (*p++ == ','); /* comma-separated list */ | |
3326 | /* Ask for another packet of static tracepoint definition. */ | |
3327 | putpkt ("qTsSTM"); | |
3328 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3329 | p = rs->buf; | |
3330 | } | |
3331 | ||
3332 | do_cleanups (old_chain); | |
3333 | return markers; | |
3334 | } | |
3335 | ||
3336 | \f | |
10760264 JB |
3337 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3338 | ||
3339 | static ptid_t | |
1e6b91a4 | 3340 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3341 | { |
ba348170 | 3342 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3343 | } |
3344 | \f | |
3345 | ||
24b06219 | 3346 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3347 | |
3348 | static void | |
fba45db2 | 3349 | extended_remote_restart (void) |
c906108c | 3350 | { |
d01949b6 | 3351 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3352 | |
3353 | /* Send the restart command; for reasons I don't understand the | |
3354 | remote side really expects a number after the "R". */ | |
ea9c271d | 3355 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3356 | putpkt (rs->buf); |
c906108c | 3357 | |
ad9a8f3f | 3358 | remote_fileio_reset (); |
c906108c SS |
3359 | } |
3360 | \f | |
3361 | /* Clean up connection to a remote debugger. */ | |
3362 | ||
c906108c | 3363 | static void |
de90e03d | 3364 | remote_close (struct target_ops *self) |
c906108c | 3365 | { |
5d93a237 TT |
3366 | struct remote_state *rs = get_remote_state (); |
3367 | ||
3368 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3369 | return; /* already closed */ |
3370 | ||
3371 | /* Make sure we leave stdin registered in the event loop, and we | |
3372 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3373 | remote_terminal_ours (self); |
ce5ce7ed | 3374 | |
5d93a237 TT |
3375 | serial_close (rs->remote_desc); |
3376 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3377 | |
3378 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3379 | of all the inferiors and their threads we were controlling. |
3380 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3381 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3382 | inferior_ptid = null_ptid; |
f67fd822 | 3383 | discard_all_inferiors (); |
ce5ce7ed | 3384 | |
f48ff2a7 YQ |
3385 | /* We are closing the remote target, so we should discard |
3386 | everything of this target. */ | |
bcc75809 | 3387 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3388 | |
3389 | if (remote_async_inferior_event_token) | |
3390 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3391 | |
5965e028 | 3392 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3393 | |
3394 | trace_reset_local_state (); | |
c906108c SS |
3395 | } |
3396 | ||
23860348 | 3397 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3398 | |
3399 | static void | |
fba45db2 | 3400 | get_offsets (void) |
c906108c | 3401 | { |
d01949b6 | 3402 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3403 | char *buf; |
085dd6e6 | 3404 | char *ptr; |
31d99776 DJ |
3405 | int lose, num_segments = 0, do_sections, do_segments; |
3406 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3407 | struct section_offsets *offs; |
31d99776 DJ |
3408 | struct symfile_segment_data *data; |
3409 | ||
3410 | if (symfile_objfile == NULL) | |
3411 | return; | |
c906108c SS |
3412 | |
3413 | putpkt ("qOffsets"); | |
6d820c5c | 3414 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3415 | buf = rs->buf; |
c906108c SS |
3416 | |
3417 | if (buf[0] == '\000') | |
3418 | return; /* Return silently. Stub doesn't support | |
23860348 | 3419 | this command. */ |
c906108c SS |
3420 | if (buf[0] == 'E') |
3421 | { | |
8a3fe4f8 | 3422 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3423 | return; |
3424 | } | |
3425 | ||
3426 | /* Pick up each field in turn. This used to be done with scanf, but | |
3427 | scanf will make trouble if CORE_ADDR size doesn't match | |
3428 | conversion directives correctly. The following code will work | |
3429 | with any size of CORE_ADDR. */ | |
3430 | text_addr = data_addr = bss_addr = 0; | |
3431 | ptr = buf; | |
3432 | lose = 0; | |
3433 | ||
61012eef | 3434 | if (startswith (ptr, "Text=")) |
c906108c SS |
3435 | { |
3436 | ptr += 5; | |
3437 | /* Don't use strtol, could lose on big values. */ | |
3438 | while (*ptr && *ptr != ';') | |
3439 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3440 | |
61012eef | 3441 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3442 | { |
3443 | ptr += 6; | |
3444 | while (*ptr && *ptr != ';') | |
3445 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3446 | } | |
3447 | else | |
3448 | lose = 1; | |
3449 | ||
61012eef | 3450 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3451 | { |
3452 | ptr += 5; | |
3453 | while (*ptr && *ptr != ';') | |
3454 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3455 | |
31d99776 DJ |
3456 | if (bss_addr != data_addr) |
3457 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3458 | } | |
3459 | else | |
3460 | lose = 1; | |
3461 | } | |
61012eef | 3462 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3463 | { |
31d99776 DJ |
3464 | ptr += 8; |
3465 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3466 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3467 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3468 | num_segments = 1; | |
3469 | ||
61012eef | 3470 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3471 | { |
3472 | ptr += 9; | |
3473 | while (*ptr && *ptr != ';') | |
3474 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3475 | num_segments++; | |
3476 | } | |
c906108c SS |
3477 | } |
3478 | else | |
3479 | lose = 1; | |
3480 | ||
3481 | if (lose) | |
8a3fe4f8 | 3482 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3483 | else if (*ptr != '\0') |
3484 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3485 | |
802188a7 | 3486 | offs = ((struct section_offsets *) |
a39a16c4 | 3487 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3488 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3489 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3490 | |
31d99776 DJ |
3491 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3492 | do_segments = (data != NULL); | |
3493 | do_sections = num_segments == 0; | |
c906108c | 3494 | |
28c32713 | 3495 | if (num_segments > 0) |
31d99776 | 3496 | { |
31d99776 DJ |
3497 | segments[0] = text_addr; |
3498 | segments[1] = data_addr; | |
3499 | } | |
28c32713 JB |
3500 | /* If we have two segments, we can still try to relocate everything |
3501 | by assuming that the .text and .data offsets apply to the whole | |
3502 | text and data segments. Convert the offsets given in the packet | |
3503 | to base addresses for symfile_map_offsets_to_segments. */ | |
3504 | else if (data && data->num_segments == 2) | |
3505 | { | |
3506 | segments[0] = data->segment_bases[0] + text_addr; | |
3507 | segments[1] = data->segment_bases[1] + data_addr; | |
3508 | num_segments = 2; | |
3509 | } | |
8d385431 DJ |
3510 | /* If the object file has only one segment, assume that it is text |
3511 | rather than data; main programs with no writable data are rare, | |
3512 | but programs with no code are useless. Of course the code might | |
3513 | have ended up in the data segment... to detect that we would need | |
3514 | the permissions here. */ | |
3515 | else if (data && data->num_segments == 1) | |
3516 | { | |
3517 | segments[0] = data->segment_bases[0] + text_addr; | |
3518 | num_segments = 1; | |
3519 | } | |
28c32713 JB |
3520 | /* There's no way to relocate by segment. */ |
3521 | else | |
3522 | do_segments = 0; | |
31d99776 DJ |
3523 | |
3524 | if (do_segments) | |
3525 | { | |
3526 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3527 | offs, num_segments, segments); | |
3528 | ||
3529 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3530 | error (_("Can not handle qOffsets TextSeg " |
3531 | "response with this symbol file")); | |
31d99776 DJ |
3532 | |
3533 | if (ret > 0) | |
3534 | do_sections = 0; | |
3535 | } | |
c906108c | 3536 | |
9ef895d6 DJ |
3537 | if (data) |
3538 | free_symfile_segment_data (data); | |
31d99776 DJ |
3539 | |
3540 | if (do_sections) | |
3541 | { | |
3542 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3543 | ||
3e43a32a MS |
3544 | /* This is a temporary kludge to force data and bss to use the |
3545 | same offsets because that's what nlmconv does now. The real | |
3546 | solution requires changes to the stub and remote.c that I | |
3547 | don't have time to do right now. */ | |
31d99776 DJ |
3548 | |
3549 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3550 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3551 | } | |
c906108c SS |
3552 | |
3553 | objfile_relocate (symfile_objfile, offs); | |
3554 | } | |
3555 | ||
9a7071a8 JB |
3556 | /* Send interrupt_sequence to remote target. */ |
3557 | static void | |
eeae04df | 3558 | send_interrupt_sequence (void) |
9a7071a8 | 3559 | { |
5d93a237 TT |
3560 | struct remote_state *rs = get_remote_state (); |
3561 | ||
9a7071a8 | 3562 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3563 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3564 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3565 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3566 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3567 | { | |
5d93a237 | 3568 | serial_send_break (rs->remote_desc); |
c33e31fd | 3569 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3570 | } |
3571 | else | |
3572 | internal_error (__FILE__, __LINE__, | |
3573 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3574 | interrupt_sequence_mode); | |
3575 | } | |
3576 | ||
3405876a PA |
3577 | |
3578 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3579 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3580 | ||
3581 | static ptid_t | |
3582 | stop_reply_extract_thread (char *stop_reply) | |
3583 | { | |
3584 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3585 | { | |
3586 | char *p; | |
3587 | ||
3588 | /* Txx r:val ; r:val (...) */ | |
3589 | p = &stop_reply[3]; | |
3590 | ||
3591 | /* Look for "register" named "thread". */ | |
3592 | while (*p != '\0') | |
3593 | { | |
3594 | char *p1; | |
3595 | ||
3596 | p1 = strchr (p, ':'); | |
3597 | if (p1 == NULL) | |
3598 | return null_ptid; | |
3599 | ||
3600 | if (strncmp (p, "thread", p1 - p) == 0) | |
3601 | return read_ptid (++p1, &p); | |
3602 | ||
3603 | p1 = strchr (p, ';'); | |
3604 | if (p1 == NULL) | |
3605 | return null_ptid; | |
3606 | p1++; | |
3607 | ||
3608 | p = p1; | |
3609 | } | |
3610 | } | |
3611 | ||
3612 | return null_ptid; | |
3613 | } | |
3614 | ||
b7ea362b PA |
3615 | /* Determine the remote side's current thread. If we have a stop |
3616 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3617 | "thread" register we can extract the current thread from. If not, | |
3618 | ask the remote which is the current thread with qC. The former | |
3619 | method avoids a roundtrip. */ | |
3620 | ||
3621 | static ptid_t | |
3622 | get_current_thread (char *wait_status) | |
3623 | { | |
6a49a997 | 3624 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3625 | |
3626 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3627 | the target architecture, which we haven't yet fully determined at | |
3628 | this point. */ | |
3629 | if (wait_status != NULL) | |
3630 | ptid = stop_reply_extract_thread (wait_status); | |
3631 | if (ptid_equal (ptid, null_ptid)) | |
3632 | ptid = remote_current_thread (inferior_ptid); | |
3633 | ||
3634 | return ptid; | |
3635 | } | |
3636 | ||
49c62f2e PA |
3637 | /* Query the remote target for which is the current thread/process, |
3638 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3639 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3640 | to return the current thread. |
3641 | ||
3642 | This function is called after handling the '?' or 'vRun' packets, | |
3643 | whose response is a stop reply from which we can also try | |
3644 | extracting the thread. If the target doesn't support the explicit | |
3645 | qC query, we infer the current thread from that stop reply, passed | |
3646 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3647 | |
3648 | static void | |
3405876a | 3649 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3650 | { |
3651 | struct remote_state *rs = get_remote_state (); | |
3652 | int fake_pid_p = 0; | |
6a49a997 | 3653 | ptid_t ptid; |
49c62f2e PA |
3654 | |
3655 | inferior_ptid = null_ptid; | |
3656 | ||
b7ea362b PA |
3657 | /* Now, if we have thread information, update inferior_ptid. */ |
3658 | ptid = get_current_thread (wait_status); | |
3405876a | 3659 | |
49c62f2e PA |
3660 | if (!ptid_equal (ptid, null_ptid)) |
3661 | { | |
3662 | if (!remote_multi_process_p (rs)) | |
3663 | fake_pid_p = 1; | |
3664 | ||
3665 | inferior_ptid = ptid; | |
3666 | } | |
3667 | else | |
3668 | { | |
3669 | /* Without this, some commands which require an active target | |
3670 | (such as kill) won't work. This variable serves (at least) | |
3671 | double duty as both the pid of the target process (if it has | |
3672 | such), and as a flag indicating that a target is active. */ | |
3673 | inferior_ptid = magic_null_ptid; | |
3674 | fake_pid_p = 1; | |
3675 | } | |
3676 | ||
1b6e6f5c | 3677 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3678 | |
3679 | /* Add the main thread. */ | |
3680 | add_thread_silent (inferior_ptid); | |
3681 | } | |
3682 | ||
221e1a37 PA |
3683 | /* Process all initial stop replies the remote side sent in response |
3684 | to the ? packet. These indicate threads that were already stopped | |
3685 | on initial connection. We mark these threads as stopped and print | |
3686 | their current frame before giving the user the prompt. */ | |
3687 | ||
3688 | static void | |
3689 | process_initial_stop_replies (void) | |
3690 | { | |
3691 | int pending_stop_replies = stop_reply_queue_length (); | |
3692 | ||
3693 | /* Consume the initial pending events. */ | |
3694 | while (pending_stop_replies-- > 0) | |
3695 | { | |
3696 | ptid_t waiton_ptid = minus_one_ptid; | |
3697 | ptid_t event_ptid; | |
3698 | struct target_waitstatus ws; | |
3699 | int ignore_event = 0; | |
3700 | ||
3701 | memset (&ws, 0, sizeof (ws)); | |
3702 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
3703 | if (remote_debug) | |
3704 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
3705 | ||
3706 | switch (ws.kind) | |
3707 | { | |
3708 | case TARGET_WAITKIND_IGNORE: | |
3709 | case TARGET_WAITKIND_NO_RESUMED: | |
3710 | case TARGET_WAITKIND_SIGNALLED: | |
3711 | case TARGET_WAITKIND_EXITED: | |
3712 | /* We shouldn't see these, but if we do, just ignore. */ | |
3713 | if (remote_debug) | |
3714 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
3715 | ignore_event = 1; | |
3716 | break; | |
3717 | ||
3718 | case TARGET_WAITKIND_EXECD: | |
3719 | xfree (ws.value.execd_pathname); | |
3720 | break; | |
3721 | default: | |
3722 | break; | |
3723 | } | |
3724 | ||
3725 | if (ignore_event) | |
3726 | continue; | |
3727 | ||
3728 | switch_to_thread (event_ptid); | |
3729 | set_executing (event_ptid, 0); | |
3730 | set_running (event_ptid, 0); | |
3731 | ||
3732 | stop_pc = get_frame_pc (get_current_frame ()); | |
3733 | set_current_sal_from_frame (get_current_frame ()); | |
3734 | ||
3735 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
3736 | { | |
3737 | enum gdb_signal sig = ws.value.sig; | |
3738 | ||
3739 | /* Stubs traditionally report SIGTRAP as initial signal, | |
3740 | instead of signal 0. Suppress it. */ | |
3741 | if (sig == GDB_SIGNAL_TRAP) | |
3742 | sig = GDB_SIGNAL_0; | |
3743 | inferior_thread ()->suspend.stop_signal = sig; | |
3744 | ||
3745 | if (signal_print_state (sig)) | |
3746 | observer_notify_signal_received (sig); | |
3747 | } | |
3748 | ||
243a9253 | 3749 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
221e1a37 PA |
3750 | observer_notify_normal_stop (NULL, 1); |
3751 | } | |
3752 | } | |
3753 | ||
9cbc821d | 3754 | static void |
04bd08de | 3755 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3756 | { |
c8d104ad PA |
3757 | struct remote_state *rs = get_remote_state (); |
3758 | struct packet_config *noack_config; | |
2d717e4f | 3759 | char *wait_status = NULL; |
8621d6a9 | 3760 | |
23860348 | 3761 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3762 | QUIT; |
c906108c | 3763 | |
9a7071a8 JB |
3764 | if (interrupt_on_connect) |
3765 | send_interrupt_sequence (); | |
3766 | ||
57e12211 | 3767 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3768 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3769 | |
1e51243a PA |
3770 | /* Signal other parts that we're going through the initial setup, |
3771 | and so things may not be stable yet. */ | |
3772 | rs->starting_up = 1; | |
3773 | ||
c8d104ad PA |
3774 | /* The first packet we send to the target is the optional "supported |
3775 | packets" request. If the target can answer this, it will tell us | |
3776 | which later probes to skip. */ | |
3777 | remote_query_supported (); | |
3778 | ||
d914c394 | 3779 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3780 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3781 | remote_set_permissions (target); |
d914c394 | 3782 | |
c8d104ad PA |
3783 | /* Next, we possibly activate noack mode. |
3784 | ||
3785 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3786 | enable noack mode if the stub reported a wish for it with | |
3787 | qSupported. | |
3788 | ||
3789 | If set to TRUE, then enable noack mode even if the stub didn't | |
3790 | report it in qSupported. If the stub doesn't reply OK, the | |
3791 | session ends with an error. | |
3792 | ||
3793 | If FALSE, then don't activate noack mode, regardless of what the | |
3794 | stub claimed should be the default with qSupported. */ | |
3795 | ||
3796 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3797 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3798 | { |
3799 | putpkt ("QStartNoAckMode"); | |
3800 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3801 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3802 | rs->noack_mode = 1; | |
3803 | } | |
3804 | ||
04bd08de | 3805 | if (extended_p) |
5fe04517 PA |
3806 | { |
3807 | /* Tell the remote that we are using the extended protocol. */ | |
3808 | putpkt ("!"); | |
3809 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3810 | } | |
3811 | ||
9b224c5e PA |
3812 | /* Let the target know which signals it is allowed to pass down to |
3813 | the program. */ | |
3814 | update_signals_program_target (); | |
3815 | ||
d962ef82 DJ |
3816 | /* Next, if the target can specify a description, read it. We do |
3817 | this before anything involving memory or registers. */ | |
3818 | target_find_description (); | |
3819 | ||
6c95b8df PA |
3820 | /* Next, now that we know something about the target, update the |
3821 | address spaces in the program spaces. */ | |
3822 | update_address_spaces (); | |
3823 | ||
50c71eaf PA |
3824 | /* On OSs where the list of libraries is global to all |
3825 | processes, we fetch them early. */ | |
f5656ead | 3826 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3827 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3828 | |
74531fed PA |
3829 | if (non_stop) |
3830 | { | |
4082afcc | 3831 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3832 | error (_("Non-stop mode requested, but remote " |
3833 | "does not support non-stop")); | |
74531fed PA |
3834 | |
3835 | putpkt ("QNonStop:1"); | |
3836 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3837 | ||
3838 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3839 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3840 | |
3841 | /* Find about threads and processes the stub is already | |
3842 | controlling. We default to adding them in the running state. | |
3843 | The '?' query below will then tell us about which threads are | |
3844 | stopped. */ | |
e8032dde | 3845 | remote_update_thread_list (target); |
74531fed | 3846 | } |
4082afcc | 3847 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3848 | { |
3849 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3850 | Request it explicitly. */ |
74531fed PA |
3851 | putpkt ("QNonStop:0"); |
3852 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3853 | ||
3854 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3855 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3856 | } |
3857 | ||
a0743c90 YQ |
3858 | /* Upload TSVs regardless of whether the target is running or not. The |
3859 | remote stub, such as GDBserver, may have some predefined or builtin | |
3860 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3861 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3862 | { |
3863 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3864 | ||
181e3713 | 3865 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3866 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3867 | } | |
3868 | ||
2d717e4f DJ |
3869 | /* Check whether the target is running now. */ |
3870 | putpkt ("?"); | |
3871 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3872 | ||
74531fed | 3873 | if (!non_stop) |
2d717e4f | 3874 | { |
e714e1bf UW |
3875 | ptid_t ptid; |
3876 | int fake_pid_p = 0; | |
3877 | struct inferior *inf; | |
3878 | ||
74531fed | 3879 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3880 | { |
04bd08de | 3881 | if (!extended_p) |
74531fed | 3882 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3883 | |
3884 | /* We're connected, but not running. Drop out before we | |
3885 | call start_remote. */ | |
e278ad5b | 3886 | rs->starting_up = 0; |
c35b1492 | 3887 | return; |
2d717e4f DJ |
3888 | } |
3889 | else | |
74531fed | 3890 | { |
74531fed | 3891 | /* Save the reply for later. */ |
224c3ddb | 3892 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
3893 | strcpy (wait_status, rs->buf); |
3894 | } | |
3895 | ||
b7ea362b | 3896 | /* Fetch thread list. */ |
e8032dde | 3897 | target_update_thread_list (); |
b7ea362b | 3898 | |
74531fed PA |
3899 | /* Let the stub know that we want it to return the thread. */ |
3900 | set_continue_thread (minus_one_ptid); | |
3901 | ||
b7ea362b PA |
3902 | if (thread_count () == 0) |
3903 | { | |
3904 | /* Target has no concept of threads at all. GDB treats | |
3905 | non-threaded target as single-threaded; add a main | |
3906 | thread. */ | |
3907 | add_current_inferior_and_thread (wait_status); | |
3908 | } | |
3909 | else | |
3910 | { | |
3911 | /* We have thread information; select the thread the target | |
3912 | says should be current. If we're reconnecting to a | |
3913 | multi-threaded program, this will ideally be the thread | |
3914 | that last reported an event before GDB disconnected. */ | |
3915 | inferior_ptid = get_current_thread (wait_status); | |
3916 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3917 | { | |
3918 | /* Odd... The target was able to list threads, but not | |
3919 | tell us which thread was current (no "thread" | |
3920 | register in T stop reply?). Just pick the first | |
3921 | thread in the thread list then. */ | |
c9f35b34 KB |
3922 | |
3923 | if (remote_debug) | |
3924 | fprintf_unfiltered (gdb_stdlog, | |
3925 | "warning: couldn't determine remote " | |
3926 | "current thread; picking first in list.\n"); | |
3927 | ||
b7ea362b PA |
3928 | inferior_ptid = thread_list->ptid; |
3929 | } | |
3930 | } | |
74531fed | 3931 | |
6e586cc5 YQ |
3932 | /* init_wait_for_inferior should be called before get_offsets in order |
3933 | to manage `inserted' flag in bp loc in a correct state. | |
3934 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3935 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3936 | start_remote, set `inserted' flag to 1. In the initialization of | |
3937 | inferior, breakpoint_init_inferior should be called first, and then | |
3938 | breakpoint_re_set can be called. If this order is broken, state of | |
3939 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3940 | manipulation. */ | |
3941 | init_wait_for_inferior (); | |
3942 | ||
74531fed PA |
3943 | get_offsets (); /* Get text, data & bss offsets. */ |
3944 | ||
d962ef82 DJ |
3945 | /* If we could not find a description using qXfer, and we know |
3946 | how to do it some other way, try again. This is not | |
3947 | supported for non-stop; it could be, but it is tricky if | |
3948 | there are no stopped threads when we connect. */ | |
04bd08de | 3949 | if (remote_read_description_p (target) |
f5656ead | 3950 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3951 | { |
3952 | target_clear_description (); | |
3953 | target_find_description (); | |
3954 | } | |
3955 | ||
74531fed PA |
3956 | /* Use the previously fetched status. */ |
3957 | gdb_assert (wait_status != NULL); | |
3958 | strcpy (rs->buf, wait_status); | |
3959 | rs->cached_wait_status = 1; | |
3960 | ||
3961 | immediate_quit--; | |
04bd08de | 3962 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3963 | } |
3964 | else | |
3965 | { | |
221e1a37 PA |
3966 | ptid_t current_ptid; |
3967 | ||
68c97600 PA |
3968 | /* Clear WFI global state. Do this before finding about new |
3969 | threads and inferiors, and setting the current inferior. | |
3970 | Otherwise we would clear the proceed status of the current | |
3971 | inferior when we want its stop_soon state to be preserved | |
3972 | (see notice_new_inferior). */ | |
3973 | init_wait_for_inferior (); | |
3974 | ||
74531fed PA |
3975 | /* In non-stop, we will either get an "OK", meaning that there |
3976 | are no stopped threads at this time; or, a regular stop | |
3977 | reply. In the latter case, there may be more than one thread | |
3978 | stopped --- we pull them all out using the vStopped | |
3979 | mechanism. */ | |
3980 | if (strcmp (rs->buf, "OK") != 0) | |
3981 | { | |
722247f1 | 3982 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3983 | |
722247f1 YQ |
3984 | /* remote_notif_get_pending_replies acks this one, and gets |
3985 | the rest out. */ | |
f48ff2a7 | 3986 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3987 | = remote_notif_parse (notif, rs->buf); |
3988 | remote_notif_get_pending_events (notif); | |
74531fed | 3989 | } |
2d717e4f | 3990 | |
74531fed PA |
3991 | if (thread_count () == 0) |
3992 | { | |
04bd08de | 3993 | if (!extended_p) |
74531fed | 3994 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3995 | |
c35b1492 PA |
3996 | /* We're connected, but not running. Drop out before we |
3997 | call start_remote. */ | |
e278ad5b | 3998 | rs->starting_up = 0; |
c35b1492 PA |
3999 | return; |
4000 | } | |
74531fed PA |
4001 | |
4002 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 4003 | |
74531fed PA |
4004 | /* Force the stub to choose a thread. */ |
4005 | set_general_thread (null_ptid); | |
c906108c | 4006 | |
74531fed | 4007 | /* Query it. */ |
221e1a37 | 4008 | current_ptid = remote_current_thread (minus_one_ptid); |
74531fed PA |
4009 | if (ptid_equal (inferior_ptid, minus_one_ptid)) |
4010 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 4011 | |
221e1a37 | 4012 | inferior_ptid = current_ptid; |
74531fed PA |
4013 | get_offsets (); /* Get text, data & bss offsets. */ |
4014 | ||
4015 | /* In non-stop mode, any cached wait status will be stored in | |
4016 | the stop reply queue. */ | |
4017 | gdb_assert (wait_status == NULL); | |
f0223081 | 4018 | |
2455069d | 4019 | /* Report all signals during attach/startup. */ |
94bedb42 | 4020 | remote_pass_signals (target, 0, NULL); |
221e1a37 PA |
4021 | |
4022 | /* If there are already stopped threads, mark them stopped and | |
4023 | report their stops before giving the prompt to the user. */ | |
4024 | process_initial_stop_replies (); | |
4025 | ||
4026 | switch_to_thread (current_ptid); | |
4027 | ||
4028 | if (target_can_async_p ()) | |
4029 | target_async (1); | |
74531fed | 4030 | } |
c8d104ad | 4031 | |
c8d104ad PA |
4032 | /* If we connected to a live target, do some additional setup. */ |
4033 | if (target_has_execution) | |
4034 | { | |
f4ccffad | 4035 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4036 | remote_check_symbols (); |
c8d104ad | 4037 | } |
50c71eaf | 4038 | |
d5551862 SS |
4039 | /* Possibly the target has been engaged in a trace run started |
4040 | previously; find out where things are at. */ | |
8bd200f1 | 4041 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 4042 | { |
00bf0b85 | 4043 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4044 | |
00bf0b85 SS |
4045 | if (current_trace_status ()->running) |
4046 | printf_filtered (_("Trace is already running on the target.\n")); | |
4047 | ||
ab6617cc | 4048 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
4049 | |
4050 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4051 | } |
4052 | ||
1e51243a PA |
4053 | /* The thread and inferior lists are now synchronized with the |
4054 | target, our symbols have been relocated, and we're merged the | |
4055 | target's tracepoints with ours. We're done with basic start | |
4056 | up. */ | |
4057 | rs->starting_up = 0; | |
4058 | ||
a25a5a45 PA |
4059 | /* Maybe breakpoints are global and need to be inserted now. */ |
4060 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4061 | insert_breakpoints (); |
c906108c SS |
4062 | } |
4063 | ||
4064 | /* Open a connection to a remote debugger. | |
4065 | NAME is the filename used for communication. */ | |
4066 | ||
4067 | static void | |
014f9477 | 4068 | remote_open (const char *name, int from_tty) |
c906108c | 4069 | { |
75c99385 | 4070 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
4071 | } |
4072 | ||
c906108c SS |
4073 | /* Open a connection to a remote debugger using the extended |
4074 | remote gdb protocol. NAME is the filename used for communication. */ | |
4075 | ||
4076 | static void | |
014f9477 | 4077 | extended_remote_open (const char *name, int from_tty) |
c906108c | 4078 | { |
75c99385 | 4079 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
4080 | } |
4081 | ||
ca4f7f8b PA |
4082 | /* Reset all packets back to "unknown support". Called when opening a |
4083 | new connection to a remote target. */ | |
c906108c | 4084 | |
d471ea57 | 4085 | static void |
ca4f7f8b | 4086 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4087 | { |
4088 | int i; | |
a744cf53 | 4089 | |
444abaca | 4090 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4091 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4092 | } |
4093 | ||
ca4f7f8b PA |
4094 | /* Initialize all packet configs. */ |
4095 | ||
4096 | static void | |
4097 | init_all_packet_configs (void) | |
4098 | { | |
4099 | int i; | |
4100 | ||
4101 | for (i = 0; i < PACKET_MAX; i++) | |
4102 | { | |
4103 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4104 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4105 | } | |
4106 | } | |
4107 | ||
23860348 | 4108 | /* Symbol look-up. */ |
dc8acb97 MS |
4109 | |
4110 | static void | |
36d25514 | 4111 | remote_check_symbols (void) |
dc8acb97 | 4112 | { |
d01949b6 | 4113 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 4114 | char *msg, *reply, *tmp; |
3b7344d5 | 4115 | struct bound_minimal_symbol sym; |
dc8acb97 | 4116 | int end; |
a5c0808e | 4117 | struct cleanup *old_chain; |
dc8acb97 | 4118 | |
63154eca PA |
4119 | /* The remote side has no concept of inferiors that aren't running |
4120 | yet, it only knows about running processes. If we're connected | |
4121 | but our current inferior is not running, we should not invite the | |
4122 | remote target to request symbol lookups related to its | |
4123 | (unrelated) current process. */ | |
4124 | if (!target_has_execution) | |
4125 | return; | |
4126 | ||
4082afcc | 4127 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4128 | return; |
4129 | ||
63154eca PA |
4130 | /* Make sure the remote is pointing at the right process. Note |
4131 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4132 | set_general_process (); |
4133 | ||
6d820c5c DJ |
4134 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4135 | because we need both at the same time. */ | |
224c3ddb | 4136 | msg = (char *) xmalloc (get_remote_packet_size ()); |
a5c0808e | 4137 | old_chain = make_cleanup (xfree, msg); |
6d820c5c | 4138 | |
23860348 | 4139 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4140 | |
4141 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
4142 | getpkt (&rs->buf, &rs->buf_size, 0); |
4143 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 4144 | reply = rs->buf; |
dc8acb97 | 4145 | |
61012eef | 4146 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 4147 | { |
77e371c0 TT |
4148 | struct bound_minimal_symbol sym; |
4149 | ||
dc8acb97 | 4150 | tmp = &reply[8]; |
cfd77fa1 | 4151 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
4152 | msg[end] = '\0'; |
4153 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 4154 | if (sym.minsym == NULL) |
ea9c271d | 4155 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 4156 | else |
2bbe3cc1 | 4157 | { |
f5656ead | 4158 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4159 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4160 | |
4161 | /* If this is a function address, return the start of code | |
4162 | instead of any data function descriptor. */ | |
f5656ead | 4163 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
4164 | sym_addr, |
4165 | ¤t_target); | |
4166 | ||
4167 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 4168 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
4169 | } |
4170 | ||
dc8acb97 | 4171 | putpkt (msg); |
6d820c5c | 4172 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4173 | reply = rs->buf; |
dc8acb97 | 4174 | } |
a5c0808e PA |
4175 | |
4176 | do_cleanups (old_chain); | |
dc8acb97 MS |
4177 | } |
4178 | ||
9db8d71f | 4179 | static struct serial * |
baa336ce | 4180 | remote_serial_open (const char *name) |
9db8d71f DJ |
4181 | { |
4182 | static int udp_warning = 0; | |
4183 | ||
4184 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4185 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4186 | serial connection is reliable and not the serial connection promising | |
4187 | to be. */ | |
61012eef | 4188 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4189 | { |
3e43a32a MS |
4190 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4191 | "Some events may be lost, rendering further debugging " | |
4192 | "impossible.")); | |
9db8d71f DJ |
4193 | udp_warning = 1; |
4194 | } | |
4195 | ||
4196 | return serial_open (name); | |
4197 | } | |
4198 | ||
d914c394 SS |
4199 | /* Inform the target of our permission settings. The permission flags |
4200 | work without this, but if the target knows the settings, it can do | |
4201 | a couple things. First, it can add its own check, to catch cases | |
4202 | that somehow manage to get by the permissions checks in target | |
4203 | methods. Second, if the target is wired to disallow particular | |
4204 | settings (for instance, a system in the field that is not set up to | |
4205 | be able to stop at a breakpoint), it can object to any unavailable | |
4206 | permissions. */ | |
4207 | ||
4208 | void | |
c378d69d | 4209 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4210 | { |
4211 | struct remote_state *rs = get_remote_state (); | |
4212 | ||
bba74b36 YQ |
4213 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4214 | "WriteReg:%x;WriteMem:%x;" | |
4215 | "InsertBreak:%x;InsertTrace:%x;" | |
4216 | "InsertFastTrace:%x;Stop:%x", | |
4217 | may_write_registers, may_write_memory, | |
4218 | may_insert_breakpoints, may_insert_tracepoints, | |
4219 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4220 | putpkt (rs->buf); |
4221 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4222 | ||
4223 | /* If the target didn't like the packet, warn the user. Do not try | |
4224 | to undo the user's settings, that would just be maddening. */ | |
4225 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4226 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4227 | } |
4228 | ||
be2a5f71 DJ |
4229 | /* This type describes each known response to the qSupported |
4230 | packet. */ | |
4231 | struct protocol_feature | |
4232 | { | |
4233 | /* The name of this protocol feature. */ | |
4234 | const char *name; | |
4235 | ||
4236 | /* The default for this protocol feature. */ | |
4237 | enum packet_support default_support; | |
4238 | ||
4239 | /* The function to call when this feature is reported, or after | |
4240 | qSupported processing if the feature is not supported. | |
4241 | The first argument points to this structure. The second | |
4242 | argument indicates whether the packet requested support be | |
4243 | enabled, disabled, or probed (or the default, if this function | |
4244 | is being called at the end of processing and this feature was | |
4245 | not reported). The third argument may be NULL; if not NULL, it | |
4246 | is a NUL-terminated string taken from the packet following | |
4247 | this feature's name and an equals sign. */ | |
4248 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4249 | const char *); | |
4250 | ||
4251 | /* The corresponding packet for this feature. Only used if | |
4252 | FUNC is remote_supported_packet. */ | |
4253 | int packet; | |
4254 | }; | |
4255 | ||
be2a5f71 DJ |
4256 | static void |
4257 | remote_supported_packet (const struct protocol_feature *feature, | |
4258 | enum packet_support support, | |
4259 | const char *argument) | |
4260 | { | |
4261 | if (argument) | |
4262 | { | |
4263 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4264 | " \"%s\"."), feature->name); | |
4265 | return; | |
4266 | } | |
4267 | ||
4082afcc | 4268 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4269 | } |
be2a5f71 DJ |
4270 | |
4271 | static void | |
4272 | remote_packet_size (const struct protocol_feature *feature, | |
4273 | enum packet_support support, const char *value) | |
4274 | { | |
4275 | struct remote_state *rs = get_remote_state (); | |
4276 | ||
4277 | int packet_size; | |
4278 | char *value_end; | |
4279 | ||
4280 | if (support != PACKET_ENABLE) | |
4281 | return; | |
4282 | ||
4283 | if (value == NULL || *value == '\0') | |
4284 | { | |
4285 | warning (_("Remote target reported \"%s\" without a size."), | |
4286 | feature->name); | |
4287 | return; | |
4288 | } | |
4289 | ||
4290 | errno = 0; | |
4291 | packet_size = strtol (value, &value_end, 16); | |
4292 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4293 | { | |
4294 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4295 | feature->name, value); | |
4296 | return; | |
4297 | } | |
4298 | ||
be2a5f71 DJ |
4299 | /* Record the new maximum packet size. */ |
4300 | rs->explicit_packet_size = packet_size; | |
4301 | } | |
4302 | ||
dc473cfb | 4303 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4304 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4305 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4306 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4307 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4308 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4309 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4310 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4311 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4312 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4313 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4314 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4315 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4316 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4317 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4318 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4319 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4320 | PACKET_qXfer_spu_read }, | |
4321 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4322 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4323 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4324 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4325 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4326 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4327 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4328 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4329 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4330 | PACKET_QPassSignals }, | |
9b224c5e PA |
4331 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4332 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4333 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4334 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4335 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4336 | PACKET_multiprocess_feature }, | |
4337 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4338 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4339 | PACKET_qXfer_siginfo_read }, | |
4340 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4341 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4342 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4343 | PACKET_ConditionalTracepoints }, |
4082afcc | 4344 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4345 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4346 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4347 | PACKET_BreakpointCommands }, |
4082afcc | 4348 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4349 | PACKET_FastTracepoints }, |
4082afcc | 4350 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4351 | PACKET_StaticTracepoints }, |
4082afcc | 4352 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4353 | PACKET_InstallInTrace}, |
4082afcc PA |
4354 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4355 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4356 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4357 | PACKET_bc }, | |
4358 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4359 | PACKET_bs }, | |
409873ef SS |
4360 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4361 | PACKET_TracepointSource }, | |
d914c394 SS |
4362 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4363 | PACKET_QAllow }, | |
4082afcc PA |
4364 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4365 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4366 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4367 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4368 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4369 | PACKET_qXfer_uib }, | |
03583c20 UW |
4370 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4371 | PACKET_QDisableRandomization }, | |
d1feda86 | 4372 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4373 | { "QTBuffer:size", PACKET_DISABLE, |
4374 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4375 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4376 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4377 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4378 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4379 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4380 | PACKET_qXfer_btrace }, |
4381 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4382 | PACKET_qXfer_btrace_conf }, |
4383 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4384 | PACKET_Qbtrace_conf_bts_size }, |
4385 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4386 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4387 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4388 | PACKET_fork_event_feature }, | |
4389 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4390 | PACKET_vfork_event_feature }, | |
94585166 DB |
4391 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
4392 | PACKET_exec_event_feature }, | |
b20a6524 | 4393 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 YQ |
4394 | PACKET_Qbtrace_conf_pt_size }, |
4395 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported } | |
be2a5f71 DJ |
4396 | }; |
4397 | ||
c8d5aac9 L |
4398 | static char *remote_support_xml; |
4399 | ||
4400 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4401 | ||
4402 | void | |
6e39997a | 4403 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4404 | { |
4405 | #if defined(HAVE_LIBEXPAT) | |
4406 | if (remote_support_xml == NULL) | |
c4f7c687 | 4407 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4408 | else |
4409 | { | |
4410 | char *copy = xstrdup (remote_support_xml + 13); | |
4411 | char *p = strtok (copy, ","); | |
4412 | ||
4413 | do | |
4414 | { | |
4415 | if (strcmp (p, xml) == 0) | |
4416 | { | |
4417 | /* already there */ | |
4418 | xfree (copy); | |
4419 | return; | |
4420 | } | |
4421 | } | |
4422 | while ((p = strtok (NULL, ",")) != NULL); | |
4423 | xfree (copy); | |
4424 | ||
94b0dee1 PA |
4425 | remote_support_xml = reconcat (remote_support_xml, |
4426 | remote_support_xml, ",", xml, | |
4427 | (char *) NULL); | |
c8d5aac9 L |
4428 | } |
4429 | #endif | |
4430 | } | |
4431 | ||
4432 | static char * | |
4433 | remote_query_supported_append (char *msg, const char *append) | |
4434 | { | |
4435 | if (msg) | |
94b0dee1 | 4436 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4437 | else |
4438 | return xstrdup (append); | |
4439 | } | |
4440 | ||
be2a5f71 DJ |
4441 | static void |
4442 | remote_query_supported (void) | |
4443 | { | |
4444 | struct remote_state *rs = get_remote_state (); | |
4445 | char *next; | |
4446 | int i; | |
4447 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4448 | ||
4449 | /* The packet support flags are handled differently for this packet | |
4450 | than for most others. We treat an error, a disabled packet, and | |
4451 | an empty response identically: any features which must be reported | |
4452 | to be used will be automatically disabled. An empty buffer | |
4453 | accomplishes this, since that is also the representation for a list | |
4454 | containing no features. */ | |
4455 | ||
4456 | rs->buf[0] = 0; | |
4082afcc | 4457 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4458 | { |
c8d5aac9 | 4459 | char *q = NULL; |
94b0dee1 | 4460 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4461 | |
73b8c1fd PA |
4462 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
4463 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 | 4464 | |
f7e6eed5 PA |
4465 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4466 | q = remote_query_supported_append (q, "swbreak+"); | |
4467 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4468 | q = remote_query_supported_append (q, "hwbreak+"); | |
4469 | ||
c8d5aac9 L |
4470 | if (remote_support_xml) |
4471 | q = remote_query_supported_append (q, remote_support_xml); | |
4472 | ||
dde08ee1 PA |
4473 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4474 | ||
89245bc0 DB |
4475 | if (rs->extended) |
4476 | { | |
4477 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4478 | != AUTO_BOOLEAN_FALSE) | |
4479 | q = remote_query_supported_append (q, "fork-events+"); | |
4480 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4481 | != AUTO_BOOLEAN_FALSE) | |
4482 | q = remote_query_supported_append (q, "vfork-events+"); | |
94585166 DB |
4483 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
4484 | != AUTO_BOOLEAN_FALSE) | |
4485 | q = remote_query_supported_append (q, "exec-events+"); | |
89245bc0 DB |
4486 | } |
4487 | ||
750ce8d1 YQ |
4488 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
4489 | q = remote_query_supported_append (q, "vContSupported+"); | |
4490 | ||
dde08ee1 PA |
4491 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4492 | putpkt (q); | |
82f73884 | 4493 | |
94b0dee1 PA |
4494 | do_cleanups (old_chain); |
4495 | ||
be2a5f71 DJ |
4496 | getpkt (&rs->buf, &rs->buf_size, 0); |
4497 | ||
4498 | /* If an error occured, warn, but do not return - just reset the | |
4499 | buffer to empty and go on to disable features. */ | |
4500 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4501 | == PACKET_ERROR) | |
4502 | { | |
4503 | warning (_("Remote failure reply: %s"), rs->buf); | |
4504 | rs->buf[0] = 0; | |
4505 | } | |
4506 | } | |
4507 | ||
4508 | memset (seen, 0, sizeof (seen)); | |
4509 | ||
4510 | next = rs->buf; | |
4511 | while (*next) | |
4512 | { | |
4513 | enum packet_support is_supported; | |
4514 | char *p, *end, *name_end, *value; | |
4515 | ||
4516 | /* First separate out this item from the rest of the packet. If | |
4517 | there's another item after this, we overwrite the separator | |
4518 | (terminated strings are much easier to work with). */ | |
4519 | p = next; | |
4520 | end = strchr (p, ';'); | |
4521 | if (end == NULL) | |
4522 | { | |
4523 | end = p + strlen (p); | |
4524 | next = end; | |
4525 | } | |
4526 | else | |
4527 | { | |
89be2091 DJ |
4528 | *end = '\0'; |
4529 | next = end + 1; | |
4530 | ||
be2a5f71 DJ |
4531 | if (end == p) |
4532 | { | |
4533 | warning (_("empty item in \"qSupported\" response")); | |
4534 | continue; | |
4535 | } | |
be2a5f71 DJ |
4536 | } |
4537 | ||
4538 | name_end = strchr (p, '='); | |
4539 | if (name_end) | |
4540 | { | |
4541 | /* This is a name=value entry. */ | |
4542 | is_supported = PACKET_ENABLE; | |
4543 | value = name_end + 1; | |
4544 | *name_end = '\0'; | |
4545 | } | |
4546 | else | |
4547 | { | |
4548 | value = NULL; | |
4549 | switch (end[-1]) | |
4550 | { | |
4551 | case '+': | |
4552 | is_supported = PACKET_ENABLE; | |
4553 | break; | |
4554 | ||
4555 | case '-': | |
4556 | is_supported = PACKET_DISABLE; | |
4557 | break; | |
4558 | ||
4559 | case '?': | |
4560 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4561 | break; | |
4562 | ||
4563 | default: | |
3e43a32a MS |
4564 | warning (_("unrecognized item \"%s\" " |
4565 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4566 | continue; |
4567 | } | |
4568 | end[-1] = '\0'; | |
4569 | } | |
4570 | ||
4571 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4572 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4573 | { | |
4574 | const struct protocol_feature *feature; | |
4575 | ||
4576 | seen[i] = 1; | |
4577 | feature = &remote_protocol_features[i]; | |
4578 | feature->func (feature, is_supported, value); | |
4579 | break; | |
4580 | } | |
4581 | } | |
4582 | ||
4583 | /* If we increased the packet size, make sure to increase the global | |
4584 | buffer size also. We delay this until after parsing the entire | |
4585 | qSupported packet, because this is the same buffer we were | |
4586 | parsing. */ | |
4587 | if (rs->buf_size < rs->explicit_packet_size) | |
4588 | { | |
4589 | rs->buf_size = rs->explicit_packet_size; | |
224c3ddb | 4590 | rs->buf = (char *) xrealloc (rs->buf, rs->buf_size); |
be2a5f71 DJ |
4591 | } |
4592 | ||
4593 | /* Handle the defaults for unmentioned features. */ | |
4594 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4595 | if (!seen[i]) | |
4596 | { | |
4597 | const struct protocol_feature *feature; | |
4598 | ||
4599 | feature = &remote_protocol_features[i]; | |
4600 | feature->func (feature, feature->default_support, NULL); | |
4601 | } | |
4602 | } | |
4603 | ||
78a095c3 JK |
4604 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4605 | on it so remove them first. */ | |
4606 | ||
4607 | static void | |
4608 | remote_unpush_target (void) | |
4609 | { | |
4610 | pop_all_targets_above (process_stratum - 1); | |
4611 | } | |
be2a5f71 | 4612 | |
c906108c | 4613 | static void |
014f9477 | 4614 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4615 | struct target_ops *target, int extended_p) |
c906108c | 4616 | { |
d01949b6 | 4617 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4618 | |
c906108c | 4619 | if (name == 0) |
8a3fe4f8 | 4620 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4621 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4622 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4623 | |
23860348 | 4624 | /* See FIXME above. */ |
c6ebd6cf | 4625 | if (!target_async_permitted) |
92d1e331 | 4626 | wait_forever_enabled_p = 1; |
6426a772 | 4627 | |
2d717e4f | 4628 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4629 | Ask this question first, before target_preopen has a chance to kill |
4630 | anything. */ | |
5d93a237 | 4631 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4632 | { |
78a095c3 JK |
4633 | if (from_tty |
4634 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4635 | error (_("Still connected.")); |
4636 | } | |
4637 | ||
78a095c3 | 4638 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4639 | target_preopen (from_tty); |
4640 | ||
89be2091 | 4641 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4642 | xfree (rs->last_pass_packet); |
4643 | rs->last_pass_packet = NULL; | |
89be2091 | 4644 | |
9b224c5e PA |
4645 | /* Make sure we send the program signals list the next time we |
4646 | resume. */ | |
5e4a05c4 TT |
4647 | xfree (rs->last_program_signals_packet); |
4648 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4649 | |
ad9a8f3f | 4650 | remote_fileio_reset (); |
1dd41f16 NS |
4651 | reopen_exec_file (); |
4652 | reread_symbols (); | |
4653 | ||
5d93a237 TT |
4654 | rs->remote_desc = remote_serial_open (name); |
4655 | if (!rs->remote_desc) | |
c906108c SS |
4656 | perror_with_name (name); |
4657 | ||
4658 | if (baud_rate != -1) | |
4659 | { | |
5d93a237 | 4660 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4661 | { |
9b74d5d3 KB |
4662 | /* The requested speed could not be set. Error out to |
4663 | top level after closing remote_desc. Take care to | |
4664 | set remote_desc to NULL to avoid closing remote_desc | |
4665 | more than once. */ | |
5d93a237 TT |
4666 | serial_close (rs->remote_desc); |
4667 | rs->remote_desc = NULL; | |
c906108c SS |
4668 | perror_with_name (name); |
4669 | } | |
4670 | } | |
4671 | ||
236af5e3 | 4672 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4673 | serial_raw (rs->remote_desc); |
c906108c SS |
4674 | |
4675 | /* If there is something sitting in the buffer we might take it as a | |
4676 | response to a command, which would be bad. */ | |
5d93a237 | 4677 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4678 | |
4679 | if (from_tty) | |
4680 | { | |
4681 | puts_filtered ("Remote debugging using "); | |
4682 | puts_filtered (name); | |
4683 | puts_filtered ("\n"); | |
4684 | } | |
23860348 | 4685 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4686 | |
74531fed PA |
4687 | /* Register extra event sources in the event loop. */ |
4688 | remote_async_inferior_event_token | |
4689 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4690 | NULL); | |
5965e028 | 4691 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4692 | |
be2a5f71 DJ |
4693 | /* Reset the target state; these things will be queried either by |
4694 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4695 | reset_all_packet_configs_support (); |
74531fed | 4696 | rs->cached_wait_status = 0; |
be2a5f71 | 4697 | rs->explicit_packet_size = 0; |
a6f3e723 | 4698 | rs->noack_mode = 0; |
82f73884 | 4699 | rs->extended = extended_p; |
e24a49d8 | 4700 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4701 | rs->ctrlc_pending_p = 0; |
802188a7 | 4702 | |
47f8a51d TT |
4703 | rs->general_thread = not_sent_ptid; |
4704 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4705 | rs->remote_traceframe_number = -1; |
c906108c | 4706 | |
9d1f7ab2 | 4707 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4708 | rs->use_threadinfo_query = 1; |
4709 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4710 | |
80152258 PA |
4711 | readahead_cache_invalidate (); |
4712 | ||
c6ebd6cf | 4713 | if (target_async_permitted) |
92d1e331 | 4714 | { |
23860348 | 4715 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4716 | remote_async_terminal_ours_p = 1; |
4717 | ||
4718 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4719 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4720 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4721 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4722 | around this. Eventually a mechanism that allows |
92d1e331 | 4723 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4724 | implemented. */ |
92d1e331 DJ |
4725 | wait_forever_enabled_p = 0; |
4726 | } | |
4727 | ||
23860348 | 4728 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4729 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4730 | |
74531fed PA |
4731 | /* Start afresh. */ |
4732 | init_thread_list (); | |
4733 | ||
36918e70 | 4734 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4735 | target (we'd otherwise be in an inconsistent state) and then |
4736 | propogate the error on up the exception chain. This ensures that | |
4737 | the caller doesn't stumble along blindly assuming that the | |
4738 | function succeeded. The CLI doesn't have this problem but other | |
4739 | UI's, such as MI do. | |
36918e70 AC |
4740 | |
4741 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4742 | this function should return an error indication letting the | |
ce2826aa | 4743 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4744 | ``target remote'' is directly wired to this function making that |
4745 | impossible. On a positive note, the CLI side of this problem has | |
4746 | been fixed - the function set_cmd_context() makes it possible for | |
4747 | all the ``target ....'' commands to share a common callback | |
4748 | function. See cli-dump.c. */ | |
109c3e39 | 4749 | { |
2d717e4f | 4750 | |
492d29ea | 4751 | TRY |
04bd08de TT |
4752 | { |
4753 | remote_start_remote (from_tty, target, extended_p); | |
4754 | } | |
492d29ea | 4755 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4756 | { |
c8d104ad PA |
4757 | /* Pop the partially set up target - unless something else did |
4758 | already before throwing the exception. */ | |
5d93a237 | 4759 | if (rs->remote_desc != NULL) |
78a095c3 | 4760 | remote_unpush_target (); |
c6ebd6cf | 4761 | if (target_async_permitted) |
109c3e39 AC |
4762 | wait_forever_enabled_p = 1; |
4763 | throw_exception (ex); | |
4764 | } | |
492d29ea | 4765 | END_CATCH |
109c3e39 | 4766 | } |
c906108c | 4767 | |
f4abbc16 MM |
4768 | remote_btrace_reset (); |
4769 | ||
c6ebd6cf | 4770 | if (target_async_permitted) |
92d1e331 | 4771 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4772 | } |
4773 | ||
de0d863e DB |
4774 | /* Detach the specified process. */ |
4775 | ||
4776 | static void | |
4777 | remote_detach_pid (int pid) | |
4778 | { | |
4779 | struct remote_state *rs = get_remote_state (); | |
4780 | ||
4781 | if (remote_multi_process_p (rs)) | |
4782 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4783 | else | |
4784 | strcpy (rs->buf, "D"); | |
4785 | ||
4786 | putpkt (rs->buf); | |
4787 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4788 | ||
4789 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4790 | ; | |
4791 | else if (rs->buf[0] == '\0') | |
4792 | error (_("Remote doesn't know how to detach")); | |
4793 | else | |
4794 | error (_("Can't detach process.")); | |
4795 | } | |
4796 | ||
4797 | /* This detaches a program to which we previously attached, using | |
4798 | inferior_ptid to identify the process. After this is done, GDB | |
4799 | can be used to debug some other program. We better not have left | |
4800 | any breakpoints in the target program or it'll die when it hits | |
4801 | one. */ | |
c906108c SS |
4802 | |
4803 | static void | |
de0d863e | 4804 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4805 | { |
82f73884 | 4806 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4807 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4808 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4809 | int is_fork_parent; | |
c906108c SS |
4810 | |
4811 | if (args) | |
8a3fe4f8 | 4812 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4813 | |
2d717e4f DJ |
4814 | if (!target_has_execution) |
4815 | error (_("No process to detach from.")); | |
4816 | ||
7cee1e54 PA |
4817 | if (from_tty) |
4818 | { | |
4819 | char *exec_file = get_exec_file (0); | |
4820 | if (exec_file == NULL) | |
4821 | exec_file = ""; | |
4822 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4823 | target_pid_to_str (pid_to_ptid (pid))); | |
4824 | gdb_flush (gdb_stdout); | |
4825 | } | |
4826 | ||
c906108c | 4827 | /* Tell the remote target to detach. */ |
de0d863e | 4828 | remote_detach_pid (pid); |
82f73884 | 4829 | |
de0d863e | 4830 | if (from_tty && !rs->extended) |
7cee1e54 | 4831 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4832 | |
de0d863e DB |
4833 | /* Check to see if we are detaching a fork parent. Note that if we |
4834 | are detaching a fork child, tp == NULL. */ | |
4835 | is_fork_parent = (tp != NULL | |
4836 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4837 | ||
4838 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4839 | breakpoints that should be available for the followed inferior. */ | |
4840 | if (!is_fork_parent) | |
4841 | target_mourn_inferior (); | |
4842 | else | |
4843 | { | |
4844 | inferior_ptid = null_ptid; | |
4845 | detach_inferior (pid); | |
4846 | } | |
2d717e4f DJ |
4847 | } |
4848 | ||
4849 | static void | |
52554a0e | 4850 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4851 | { |
de0d863e | 4852 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4853 | } |
4854 | ||
4855 | static void | |
52554a0e | 4856 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4857 | { |
de0d863e DB |
4858 | remote_detach_1 (args, from_tty); |
4859 | } | |
4860 | ||
4861 | /* Target follow-fork function for remote targets. On entry, and | |
4862 | at return, the current inferior is the fork parent. | |
4863 | ||
4864 | Note that although this is currently only used for extended-remote, | |
4865 | it is named remote_follow_fork in anticipation of using it for the | |
4866 | remote target as well. */ | |
4867 | ||
4868 | static int | |
4869 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4870 | int detach_fork) | |
4871 | { | |
4872 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 4873 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 4874 | |
c269dbdb DB |
4875 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
4876 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
4877 | { |
4878 | /* When following the parent and detaching the child, we detach | |
4879 | the child here. For the case of following the child and | |
4880 | detaching the parent, the detach is done in the target- | |
4881 | independent follow fork code in infrun.c. We can't use | |
4882 | target_detach when detaching an unfollowed child because | |
4883 | the client side doesn't know anything about the child. */ | |
4884 | if (detach_fork && !follow_child) | |
4885 | { | |
4886 | /* Detach the fork child. */ | |
4887 | ptid_t child_ptid; | |
4888 | pid_t child_pid; | |
4889 | ||
4890 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4891 | child_pid = ptid_get_pid (child_ptid); | |
4892 | ||
4893 | remote_detach_pid (child_pid); | |
4894 | detach_inferior (child_pid); | |
4895 | } | |
4896 | } | |
4897 | return 0; | |
c906108c SS |
4898 | } |
4899 | ||
94585166 DB |
4900 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
4901 | in the program space of the new inferior. On entry and at return the | |
4902 | current inferior is the exec'ing inferior. INF is the new exec'd | |
4903 | inferior, which may be the same as the exec'ing inferior unless | |
4904 | follow-exec-mode is "new". */ | |
4905 | ||
4906 | static void | |
4907 | remote_follow_exec (struct target_ops *ops, | |
4908 | struct inferior *inf, char *execd_pathname) | |
4909 | { | |
4910 | /* We know that this is a target file name, so if it has the "target:" | |
4911 | prefix we strip it off before saving it in the program space. */ | |
4912 | if (is_target_filename (execd_pathname)) | |
4913 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
4914 | ||
4915 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
4916 | } | |
4917 | ||
6ad8ae5c DJ |
4918 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4919 | ||
43ff13b4 | 4920 | static void |
fee354ee | 4921 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4922 | { |
43ff13b4 | 4923 | if (args) |
2d717e4f | 4924 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4925 | |
2d717e4f | 4926 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4927 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4928 | target_mourn_inferior. */ |
20f796c9 | 4929 | remote_mourn (target); |
2d717e4f | 4930 | |
43ff13b4 JM |
4931 | if (from_tty) |
4932 | puts_filtered ("Ending remote debugging.\n"); | |
4933 | } | |
4934 | ||
2d717e4f DJ |
4935 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4936 | be chatty about it. */ | |
4937 | ||
4938 | static void | |
20f796c9 GB |
4939 | extended_remote_attach (struct target_ops *target, const char *args, |
4940 | int from_tty) | |
2d717e4f DJ |
4941 | { |
4942 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4943 | int pid; |
96ef3384 | 4944 | char *wait_status = NULL; |
2d717e4f | 4945 | |
74164c56 | 4946 | pid = parse_pid_to_attach (args); |
2d717e4f | 4947 | |
74164c56 JK |
4948 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4949 | way as in other targets. */ | |
2d717e4f | 4950 | |
4082afcc | 4951 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4952 | error (_("This target does not support attaching to a process")); |
4953 | ||
7cee1e54 PA |
4954 | if (from_tty) |
4955 | { | |
4956 | char *exec_file = get_exec_file (0); | |
4957 | ||
4958 | if (exec_file) | |
4959 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4960 | target_pid_to_str (pid_to_ptid (pid))); | |
4961 | else | |
4962 | printf_unfiltered (_("Attaching to %s\n"), | |
4963 | target_pid_to_str (pid_to_ptid (pid))); | |
4964 | ||
4965 | gdb_flush (gdb_stdout); | |
4966 | } | |
4967 | ||
bba74b36 | 4968 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4969 | putpkt (rs->buf); |
4970 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4971 | ||
4082afcc PA |
4972 | switch (packet_ok (rs->buf, |
4973 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4974 | { |
4082afcc | 4975 | case PACKET_OK: |
74531fed PA |
4976 | if (!non_stop) |
4977 | { | |
4978 | /* Save the reply for later. */ | |
224c3ddb | 4979 | wait_status = (char *) alloca (strlen (rs->buf) + 1); |
74531fed PA |
4980 | strcpy (wait_status, rs->buf); |
4981 | } | |
4982 | else if (strcmp (rs->buf, "OK") != 0) | |
4983 | error (_("Attaching to %s failed with: %s"), | |
4984 | target_pid_to_str (pid_to_ptid (pid)), | |
4985 | rs->buf); | |
4082afcc PA |
4986 | break; |
4987 | case PACKET_UNKNOWN: | |
4988 | error (_("This target does not support attaching to a process")); | |
4989 | default: | |
4990 | error (_("Attaching to %s failed"), | |
4991 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4992 | } |
2d717e4f | 4993 | |
1b6e6f5c | 4994 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4995 | |
2d717e4f | 4996 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4997 | |
bad34192 PA |
4998 | if (non_stop) |
4999 | { | |
5000 | struct thread_info *thread; | |
79d7f229 | 5001 | |
bad34192 | 5002 | /* Get list of threads. */ |
e8032dde | 5003 | remote_update_thread_list (target); |
82f73884 | 5004 | |
bad34192 PA |
5005 | thread = first_thread_of_process (pid); |
5006 | if (thread) | |
5007 | inferior_ptid = thread->ptid; | |
5008 | else | |
5009 | inferior_ptid = pid_to_ptid (pid); | |
5010 | ||
5011 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5012 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5013 | } |
74531fed | 5014 | else |
bad34192 PA |
5015 | { |
5016 | /* Now, if we have thread information, update inferior_ptid. */ | |
5017 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5018 | ||
5019 | /* Add the main thread to the thread list. */ | |
5020 | add_thread_silent (inferior_ptid); | |
5021 | } | |
c0a2216e | 5022 | |
96ef3384 UW |
5023 | /* Next, if the target can specify a description, read it. We do |
5024 | this before anything involving memory or registers. */ | |
5025 | target_find_description (); | |
5026 | ||
74531fed PA |
5027 | if (!non_stop) |
5028 | { | |
5029 | /* Use the previously fetched status. */ | |
5030 | gdb_assert (wait_status != NULL); | |
5031 | ||
5032 | if (target_can_async_p ()) | |
5033 | { | |
722247f1 YQ |
5034 | struct notif_event *reply |
5035 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 5036 | |
722247f1 | 5037 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5038 | |
6a3753b3 | 5039 | target_async (1); |
74531fed PA |
5040 | } |
5041 | else | |
5042 | { | |
5043 | gdb_assert (wait_status != NULL); | |
5044 | strcpy (rs->buf, wait_status); | |
5045 | rs->cached_wait_status = 1; | |
5046 | } | |
5047 | } | |
5048 | else | |
5049 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5050 | } |
5051 | ||
b9c1d481 AS |
5052 | /* Implementation of the to_post_attach method. */ |
5053 | ||
5054 | static void | |
5055 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5056 | { | |
5057 | /* In certain cases GDB might not have had the chance to start | |
5058 | symbol lookup up until now. This could happen if the debugged | |
5059 | binary is not using shared libraries, the vsyscall page is not | |
5060 | present (on Linux) and the binary itself hadn't changed since the | |
5061 | debugging process was started. */ | |
5062 | if (symfile_objfile != NULL) | |
5063 | remote_check_symbols(); | |
5064 | } | |
5065 | ||
c906108c | 5066 | \f |
506fb367 DJ |
5067 | /* Check for the availability of vCont. This function should also check |
5068 | the response. */ | |
c906108c SS |
5069 | |
5070 | static void | |
6d820c5c | 5071 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 5072 | { |
2e9f7625 | 5073 | char *buf; |
6d820c5c | 5074 | |
2e9f7625 DJ |
5075 | strcpy (rs->buf, "vCont?"); |
5076 | putpkt (rs->buf); | |
6d820c5c | 5077 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5078 | buf = rs->buf; |
c906108c | 5079 | |
506fb367 | 5080 | /* Make sure that the features we assume are supported. */ |
61012eef | 5081 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5082 | { |
5083 | char *p = &buf[5]; | |
750ce8d1 | 5084 | int support_c, support_C; |
506fb367 | 5085 | |
750ce8d1 YQ |
5086 | rs->supports_vCont.s = 0; |
5087 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5088 | support_c = 0; |
5089 | support_C = 0; | |
d458bd84 | 5090 | rs->supports_vCont.t = 0; |
c1e36e3e | 5091 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5092 | while (p && *p == ';') |
5093 | { | |
5094 | p++; | |
5095 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5096 | rs->supports_vCont.s = 1; |
506fb367 | 5097 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5098 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5099 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5100 | support_c = 1; | |
5101 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5102 | support_C = 1; | |
74531fed | 5103 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5104 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5105 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5106 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5107 | |
5108 | p = strchr (p, ';'); | |
5109 | } | |
c906108c | 5110 | |
750ce8d1 YQ |
5111 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5112 | BUF will make packet_ok disable the packet. */ | |
5113 | if (!support_c || !support_C) | |
506fb367 DJ |
5114 | buf[0] = 0; |
5115 | } | |
c906108c | 5116 | |
444abaca | 5117 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5118 | } |
c906108c | 5119 | |
0d8f58ca PA |
5120 | /* Helper function for building "vCont" resumptions. Write a |
5121 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5122 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5123 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5124 | resumed thread should be single-stepped and/or signalled. If PTID | |
5125 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5126 | represents a process, then all threads of the process are resumed; | |
5127 | the thread to be stepped and/or signalled is given in the global | |
5128 | INFERIOR_PTID. */ | |
5129 | ||
5130 | static char * | |
5131 | append_resumption (char *p, char *endp, | |
2ea28649 | 5132 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
5133 | { |
5134 | struct remote_state *rs = get_remote_state (); | |
5135 | ||
a493e3e2 | 5136 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5137 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5138 | else if (step |
5139 | /* GDB is willing to range step. */ | |
5140 | && use_range_stepping | |
5141 | /* Target supports range stepping. */ | |
5142 | && rs->supports_vCont.r | |
5143 | /* We don't currently support range stepping multiple | |
5144 | threads with a wildcard (though the protocol allows it, | |
5145 | so stubs shouldn't make an active effort to forbid | |
5146 | it). */ | |
5147 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5148 | { | |
5149 | struct thread_info *tp; | |
5150 | ||
5151 | if (ptid_equal (ptid, minus_one_ptid)) | |
5152 | { | |
5153 | /* If we don't know about the target thread's tid, then | |
5154 | we're resuming magic_null_ptid (see caller). */ | |
5155 | tp = find_thread_ptid (magic_null_ptid); | |
5156 | } | |
5157 | else | |
5158 | tp = find_thread_ptid (ptid); | |
5159 | gdb_assert (tp != NULL); | |
5160 | ||
5161 | if (tp->control.may_range_step) | |
5162 | { | |
5163 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
5164 | ||
5165 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
5166 | phex_nz (tp->control.step_range_start, | |
5167 | addr_size), | |
5168 | phex_nz (tp->control.step_range_end, | |
5169 | addr_size)); | |
5170 | } | |
5171 | else | |
5172 | p += xsnprintf (p, endp - p, ";s"); | |
5173 | } | |
0d8f58ca PA |
5174 | else if (step) |
5175 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 5176 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
5177 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
5178 | else | |
5179 | p += xsnprintf (p, endp - p, ";c"); | |
5180 | ||
5181 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
5182 | { | |
5183 | ptid_t nptid; | |
5184 | ||
5185 | /* All (-1) threads of process. */ | |
ba348170 | 5186 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
5187 | |
5188 | p += xsnprintf (p, endp - p, ":"); | |
5189 | p = write_ptid (p, endp, nptid); | |
5190 | } | |
5191 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
5192 | { | |
5193 | p += xsnprintf (p, endp - p, ":"); | |
5194 | p = write_ptid (p, endp, ptid); | |
5195 | } | |
5196 | ||
5197 | return p; | |
5198 | } | |
5199 | ||
e5ef252a PA |
5200 | /* Append a vCont continue-with-signal action for threads that have a |
5201 | non-zero stop signal. */ | |
5202 | ||
5203 | static char * | |
5204 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
5205 | { | |
5206 | struct thread_info *thread; | |
5207 | ||
034f788c | 5208 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
5209 | if (ptid_match (thread->ptid, ptid) |
5210 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 5211 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
5212 | { |
5213 | p = append_resumption (p, endp, thread->ptid, | |
5214 | 0, thread->suspend.stop_signal); | |
5215 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
5216 | } | |
5217 | ||
5218 | return p; | |
5219 | } | |
5220 | ||
506fb367 DJ |
5221 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5222 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
5223 | resumed thread should be single-stepped and/or signalled. If PTID |
5224 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5225 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5226 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 5227 | |
506fb367 DJ |
5228 | This function issues a strict subset of all possible vCont commands at the |
5229 | moment. */ | |
44eaed12 | 5230 | |
506fb367 | 5231 | static int |
2ea28649 | 5232 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5233 | { |
5234 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5235 | char *p; |
5236 | char *endp; | |
44eaed12 | 5237 | |
4082afcc | 5238 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5239 | remote_vcont_probe (rs); |
44eaed12 | 5240 | |
4082afcc | 5241 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5242 | return 0; |
44eaed12 | 5243 | |
82f73884 PA |
5244 | p = rs->buf; |
5245 | endp = rs->buf + get_remote_packet_size (); | |
5246 | ||
506fb367 DJ |
5247 | /* If we could generate a wider range of packets, we'd have to worry |
5248 | about overflowing BUF. Should there be a generic | |
5249 | "multi-part-packet" packet? */ | |
5250 | ||
0d8f58ca PA |
5251 | p += xsnprintf (p, endp - p, "vCont"); |
5252 | ||
79d7f229 | 5253 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5254 | { |
79d7f229 PA |
5255 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5256 | so we don't have any TID numbers the inferior will | |
5257 | understand. Make sure to only send forms that do not specify | |
5258 | a TID. */ | |
a9cbf802 | 5259 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5260 | } |
0d8f58ca | 5261 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5262 | { |
0d8f58ca PA |
5263 | /* Resume all threads (of all processes, or of a single |
5264 | process), with preference for INFERIOR_PTID. This assumes | |
5265 | inferior_ptid belongs to the set of all threads we are about | |
5266 | to resume. */ | |
a493e3e2 | 5267 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5268 | { |
0d8f58ca PA |
5269 | /* Step inferior_ptid, with or without signal. */ |
5270 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5271 | } |
0d8f58ca | 5272 | |
e5ef252a PA |
5273 | /* Also pass down any pending signaled resumption for other |
5274 | threads not the current. */ | |
5275 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5276 | ||
0d8f58ca | 5277 | /* And continue others without a signal. */ |
a493e3e2 | 5278 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5279 | } |
5280 | else | |
506fb367 DJ |
5281 | { |
5282 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5283 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5284 | } |
c906108c | 5285 | |
82f73884 PA |
5286 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5287 | putpkt (rs->buf); | |
506fb367 | 5288 | |
74531fed PA |
5289 | if (non_stop) |
5290 | { | |
5291 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5292 | reply will be reported asynchronously by means of a `%Stop' | |
5293 | notification. */ | |
5294 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5295 | if (strcmp (rs->buf, "OK") != 0) | |
5296 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5297 | } | |
5298 | ||
506fb367 | 5299 | return 1; |
c906108c | 5300 | } |
43ff13b4 | 5301 | |
506fb367 DJ |
5302 | /* Tell the remote machine to resume. */ |
5303 | ||
43ff13b4 | 5304 | static void |
28439f5e | 5305 | remote_resume (struct target_ops *ops, |
2ea28649 | 5306 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5307 | { |
d01949b6 | 5308 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5309 | char *buf; |
43ff13b4 | 5310 | |
722247f1 YQ |
5311 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5312 | (explained in remote-notif.c:handle_notification) so | |
5313 | remote_notif_process is not called. We need find a place where | |
5314 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5315 | before resuming inferior, because inferior was stopped and no RSP | |
5316 | traffic at that moment. */ | |
5317 | if (!non_stop) | |
5965e028 | 5318 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5319 | |
b73be471 | 5320 | rs->last_sent_signal = siggnal; |
280ceea3 | 5321 | rs->last_sent_step = step; |
43ff13b4 | 5322 | |
506fb367 | 5323 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5324 | /* No reverse support (yet) for vCont. */ |
5325 | if (execution_direction != EXEC_REVERSE) | |
5326 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5327 | goto done; | |
506fb367 | 5328 | |
79d7f229 PA |
5329 | /* All other supported resume packets do use Hc, so set the continue |
5330 | thread. */ | |
5331 | if (ptid_equal (ptid, minus_one_ptid)) | |
5332 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5333 | else |
79d7f229 | 5334 | set_continue_thread (ptid); |
506fb367 | 5335 | |
2e9f7625 | 5336 | buf = rs->buf; |
b2175913 MS |
5337 | if (execution_direction == EXEC_REVERSE) |
5338 | { | |
5339 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5340 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5341 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5342 | siggnal); |
40ab02ce | 5343 | |
4082afcc | 5344 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5345 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5346 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5347 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5348 | |
b2175913 MS |
5349 | strcpy (buf, step ? "bs" : "bc"); |
5350 | } | |
a493e3e2 | 5351 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5352 | { |
5353 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5354 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5355 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5356 | buf[3] = '\0'; |
5357 | } | |
5358 | else | |
c5aa993b | 5359 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5360 | |
44eaed12 | 5361 | putpkt (buf); |
43ff13b4 | 5362 | |
75c99385 | 5363 | done: |
2acceee2 | 5364 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5365 | with the event loop. NOTE: this is the one place where all the |
5366 | execution commands end up. We could alternatively do this in each | |
23860348 | 5367 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5368 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5369 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5370 | NOT asynchronously. */ |
362646f5 | 5371 | if (target_can_async_p ()) |
6a3753b3 | 5372 | target_async (1); |
e24a49d8 PA |
5373 | |
5374 | /* We've just told the target to resume. The remote server will | |
5375 | wait for the inferior to stop, and then send a stop reply. In | |
5376 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5377 | because the stub wouldn't be ready to process it. This applies |
5378 | only to the base all-stop protocol, however. In non-stop (which | |
5379 | only supports vCont), the stub replies with an "OK", and is | |
5380 | immediate able to process further serial input. */ | |
5381 | if (!non_stop) | |
5382 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5383 | } |
c906108c | 5384 | \f |
43ff13b4 JM |
5385 | |
5386 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5387 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5388 | static void |
934b9bac | 5389 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5390 | { |
934b9bac | 5391 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5392 | } |
5393 | ||
23860348 | 5394 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5395 | static void |
934b9bac | 5396 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5397 | { |
934b9bac | 5398 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5399 | /* Note we need to go through gdb_call_async_signal_handler in order |
5400 | to wake up the event loop on Windows. */ | |
5401 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5402 | } |
5403 | ||
5404 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5405 | sent once. It will take effect the second time that the user sends | |
23860348 | 5406 | a ^C. */ |
43ff13b4 | 5407 | static void |
934b9bac | 5408 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5409 | { |
934b9bac | 5410 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5411 | /* See note in async_handle_remote_sigint. */ |
5412 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5413 | } |
5414 | ||
abc56d60 PA |
5415 | /* Implementation of to_check_pending_interrupt. */ |
5416 | ||
5417 | static void | |
5418 | remote_check_pending_interrupt (struct target_ops *self) | |
5419 | { | |
5420 | struct async_signal_handler *token = async_sigint_remote_twice_token; | |
5421 | ||
5422 | if (async_signal_handler_is_marked (token)) | |
5423 | { | |
5424 | clear_async_signal_handler (token); | |
5425 | call_async_signal_handler (token); | |
5426 | } | |
5427 | } | |
5428 | ||
6426a772 | 5429 | /* Perform the real interruption of the target execution, in response |
23860348 | 5430 | to a ^C. */ |
c5aa993b | 5431 | static void |
fba45db2 | 5432 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5433 | { |
5434 | if (remote_debug) | |
248fd3bf | 5435 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5436 | |
94cc34af | 5437 | target_stop (inferior_ptid); |
43ff13b4 JM |
5438 | } |
5439 | ||
0df8b418 | 5440 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5441 | up on the target alltogether. */ |
47e1ce27 | 5442 | static void |
fba45db2 | 5443 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5444 | { |
2df3850c | 5445 | if (remote_debug) |
248fd3bf | 5446 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5447 | |
5448 | interrupt_query (); | |
43ff13b4 JM |
5449 | } |
5450 | ||
5451 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5452 | stopped. */ |
6426a772 | 5453 | static void |
934b9bac | 5454 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5455 | { |
5456 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5457 | } |
5458 | ||
c906108c SS |
5459 | /* Send ^C to target to halt it. Target will respond, and send us a |
5460 | packet. */ | |
507f3c78 | 5461 | static void (*ofunc) (int); |
c906108c | 5462 | |
bfedc46a PA |
5463 | /* The command line interface's interrupt routine. This function is installed |
5464 | as a signal handler for SIGINT. The first time a user requests an | |
5465 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5466 | response from the target (it didn't stop when the user requested it), |
23860348 | 5467 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5468 | |
c906108c | 5469 | static void |
934b9bac | 5470 | sync_remote_interrupt (int signo) |
c906108c | 5471 | { |
23860348 | 5472 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5473 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5474 | |
934b9bac | 5475 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5476 | } |
5477 | ||
5478 | /* The user typed ^C twice. */ | |
5479 | ||
5480 | static void | |
934b9bac | 5481 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5482 | { |
5483 | signal (signo, ofunc); | |
934b9bac JK |
5484 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5485 | signal (signo, sync_remote_interrupt); | |
c906108c | 5486 | } |
7a292a7a | 5487 | |
74531fed PA |
5488 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5489 | thread, all threads of a remote process, or all threads of all | |
5490 | processes. */ | |
5491 | ||
5492 | static void | |
5493 | remote_stop_ns (ptid_t ptid) | |
5494 | { | |
5495 | struct remote_state *rs = get_remote_state (); | |
5496 | char *p = rs->buf; | |
5497 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5498 | |
4082afcc | 5499 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5500 | remote_vcont_probe (rs); |
5501 | ||
d458bd84 | 5502 | if (!rs->supports_vCont.t) |
74531fed PA |
5503 | error (_("Remote server does not support stopping threads")); |
5504 | ||
f91d3df5 PA |
5505 | if (ptid_equal (ptid, minus_one_ptid) |
5506 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5507 | p += xsnprintf (p, endp - p, "vCont;t"); |
5508 | else | |
5509 | { | |
5510 | ptid_t nptid; | |
5511 | ||
74531fed PA |
5512 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5513 | ||
5514 | if (ptid_is_pid (ptid)) | |
5515 | /* All (-1) threads of process. */ | |
ba348170 | 5516 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5517 | else |
5518 | { | |
5519 | /* Small optimization: if we already have a stop reply for | |
5520 | this thread, no use in telling the stub we want this | |
5521 | stopped. */ | |
5522 | if (peek_stop_reply (ptid)) | |
5523 | return; | |
5524 | ||
5525 | nptid = ptid; | |
5526 | } | |
5527 | ||
a9cbf802 | 5528 | write_ptid (p, endp, nptid); |
74531fed PA |
5529 | } |
5530 | ||
5531 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5532 | come in asynchronously by notification. */ | |
5533 | putpkt (rs->buf); | |
5534 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5535 | if (strcmp (rs->buf, "OK") != 0) | |
5536 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5537 | } | |
5538 | ||
bfedc46a PA |
5539 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5540 | interrupt the remote target. It is undefined which thread of which | |
5541 | process reports the interrupt. */ | |
74531fed PA |
5542 | |
5543 | static void | |
bfedc46a | 5544 | remote_interrupt_as (ptid_t ptid) |
74531fed PA |
5545 | { |
5546 | struct remote_state *rs = get_remote_state (); | |
5547 | ||
3a29589a DJ |
5548 | rs->ctrlc_pending_p = 1; |
5549 | ||
74531fed PA |
5550 | /* If the inferior is stopped already, but the core didn't know |
5551 | about it yet, just ignore the request. The cached wait status | |
5552 | will be collected in remote_wait. */ | |
5553 | if (rs->cached_wait_status) | |
5554 | return; | |
5555 | ||
9a7071a8 JB |
5556 | /* Send interrupt_sequence to remote target. */ |
5557 | send_interrupt_sequence (); | |
74531fed PA |
5558 | } |
5559 | ||
bfedc46a | 5560 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 5561 | |
c906108c | 5562 | static void |
1eab8a48 | 5563 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5564 | { |
7a292a7a | 5565 | if (remote_debug) |
0f71a2f6 | 5566 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5567 | |
74531fed PA |
5568 | if (non_stop) |
5569 | remote_stop_ns (ptid); | |
c906108c | 5570 | else |
bfedc46a PA |
5571 | { |
5572 | /* We don't currently have a way to transparently pause the | |
5573 | remote target in all-stop mode. Interrupt it instead. */ | |
5574 | remote_interrupt_as (ptid); | |
5575 | } | |
5576 | } | |
5577 | ||
5578 | /* Implement the to_interrupt function for the remote targets. */ | |
5579 | ||
5580 | static void | |
5581 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5582 | { | |
5583 | if (remote_debug) | |
5584 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5585 | ||
5586 | if (non_stop) | |
5587 | { | |
5588 | /* We don't currently have a way to ^C the remote target in | |
5589 | non-stop mode. Stop it (with no signal) instead. */ | |
5590 | remote_stop_ns (ptid); | |
5591 | } | |
5592 | else | |
5593 | remote_interrupt_as (ptid); | |
c906108c SS |
5594 | } |
5595 | ||
5596 | /* Ask the user what to do when an interrupt is received. */ | |
5597 | ||
5598 | static void | |
fba45db2 | 5599 | interrupt_query (void) |
c906108c | 5600 | { |
abc56d60 PA |
5601 | struct remote_state *rs = get_remote_state (); |
5602 | struct cleanup *old_chain; | |
5603 | ||
5604 | old_chain = make_cleanup_restore_target_terminal (); | |
c906108c SS |
5605 | target_terminal_ours (); |
5606 | ||
abc56d60 | 5607 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 5608 | { |
abc56d60 PA |
5609 | if (query (_("The target is not responding to interrupt requests.\n" |
5610 | "Stop debugging it? "))) | |
74531fed | 5611 | { |
78a095c3 | 5612 | remote_unpush_target (); |
abc56d60 | 5613 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
5614 | } |
5615 | } | |
abc56d60 PA |
5616 | else |
5617 | { | |
5618 | if (query (_("Interrupted while waiting for the program.\n" | |
5619 | "Give up waiting? "))) | |
5620 | quit (); | |
5621 | } | |
c906108c | 5622 | |
abc56d60 | 5623 | do_cleanups (old_chain); |
c906108c SS |
5624 | } |
5625 | ||
6426a772 JM |
5626 | /* Enable/disable target terminal ownership. Most targets can use |
5627 | terminal groups to control terminal ownership. Remote targets are | |
5628 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5629 | is required. */ |
6426a772 JM |
5630 | |
5631 | static void | |
d2f640d4 | 5632 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5633 | { |
c6ebd6cf | 5634 | if (!target_async_permitted) |
75c99385 PA |
5635 | /* Nothing to do. */ |
5636 | return; | |
5637 | ||
d9d2d8b6 PA |
5638 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5639 | idempotent. The event-loop GDB talking to an asynchronous target | |
5640 | with a synchronous command calls this function from both | |
5641 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5642 | transfer the terminal to the target when it shouldn't this guard | |
5643 | can go away. */ | |
6426a772 JM |
5644 | if (!remote_async_terminal_ours_p) |
5645 | return; | |
5646 | delete_file_handler (input_fd); | |
5647 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5648 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5649 | /* NOTE: At this point we could also register our selves as the |
5650 | recipient of all input. Any characters typed could then be | |
23860348 | 5651 | passed on down to the target. */ |
6426a772 JM |
5652 | } |
5653 | ||
5654 | static void | |
e3594fd1 | 5655 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5656 | { |
c6ebd6cf | 5657 | if (!target_async_permitted) |
75c99385 PA |
5658 | /* Nothing to do. */ |
5659 | return; | |
5660 | ||
5661 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5662 | if (remote_async_terminal_ours_p) |
5663 | return; | |
934b9bac | 5664 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5665 | add_file_handler (input_fd, stdin_event_handler, 0); |
5666 | remote_async_terminal_ours_p = 1; | |
5667 | } | |
5668 | ||
176a6961 | 5669 | static void |
917317f4 | 5670 | remote_console_output (char *msg) |
c906108c SS |
5671 | { |
5672 | char *p; | |
5673 | ||
c5aa993b | 5674 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5675 | { |
5676 | char tb[2]; | |
5677 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5678 | |
c906108c SS |
5679 | tb[0] = c; |
5680 | tb[1] = 0; | |
43ff13b4 | 5681 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5682 | } |
00db5b94 PA |
5683 | gdb_flush (gdb_stdtarg); |
5684 | } | |
74531fed PA |
5685 | |
5686 | typedef struct cached_reg | |
5687 | { | |
5688 | int num; | |
5689 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5690 | } cached_reg_t; | |
5691 | ||
5692 | DEF_VEC_O(cached_reg_t); | |
5693 | ||
722247f1 | 5694 | typedef struct stop_reply |
74531fed | 5695 | { |
722247f1 | 5696 | struct notif_event base; |
74531fed | 5697 | |
722247f1 | 5698 | /* The identifier of the thread about this event */ |
74531fed PA |
5699 | ptid_t ptid; |
5700 | ||
340e3c99 | 5701 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5702 | connection, represented by a remote_state object, is closed, |
5703 | all the associated stop_reply events should be released. */ | |
5704 | struct remote_state *rs; | |
5705 | ||
74531fed PA |
5706 | struct target_waitstatus ws; |
5707 | ||
15148d6a PA |
5708 | /* Expedited registers. This makes remote debugging a bit more |
5709 | efficient for those targets that provide critical registers as | |
5710 | part of their normal status mechanism (as another roundtrip to | |
5711 | fetch them is avoided). */ | |
74531fed PA |
5712 | VEC(cached_reg_t) *regcache; |
5713 | ||
f7e6eed5 PA |
5714 | enum target_stop_reason stop_reason; |
5715 | ||
74531fed PA |
5716 | CORE_ADDR watch_data_address; |
5717 | ||
dc146f7c | 5718 | int core; |
722247f1 | 5719 | } *stop_reply_p; |
a744cf53 | 5720 | |
722247f1 YQ |
5721 | DECLARE_QUEUE_P (stop_reply_p); |
5722 | DEFINE_QUEUE_P (stop_reply_p); | |
5723 | /* The list of already fetched and acknowledged stop events. This | |
5724 | queue is used for notification Stop, and other notifications | |
5725 | don't need queue for their events, because the notification events | |
5726 | of Stop can't be consumed immediately, so that events should be | |
5727 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5728 | time. Other notifications can consume their events immediately, | |
5729 | so queue is not needed for them. */ | |
5730 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5731 | |
5732 | static void | |
5733 | stop_reply_xfree (struct stop_reply *r) | |
5734 | { | |
f48ff2a7 | 5735 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5736 | } |
5737 | ||
221e1a37 PA |
5738 | /* Return the length of the stop reply queue. */ |
5739 | ||
5740 | static int | |
5741 | stop_reply_queue_length (void) | |
5742 | { | |
5743 | return QUEUE_length (stop_reply_p, stop_reply_queue); | |
5744 | } | |
5745 | ||
722247f1 YQ |
5746 | static void |
5747 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5748 | struct notif_event *event) | |
5749 | { | |
5750 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5751 | } | |
5752 | ||
5753 | static void | |
5754 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5755 | struct notif_event *event) | |
5756 | { | |
5757 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5758 | ||
5759 | /* acknowledge */ | |
5760 | putpkt ((char *) self->ack_command); | |
5761 | ||
5762 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5763 | /* We got an unknown stop reply. */ | |
5764 | error (_("Unknown stop reply")); | |
5765 | ||
5766 | push_stop_reply (stop_reply); | |
5767 | } | |
5768 | ||
5769 | static int | |
5770 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5771 | { | |
5772 | /* We can't get pending events in remote_notif_process for | |
5773 | notification stop, and we have to do this in remote_wait_ns | |
5774 | instead. If we fetch all queued events from stub, remote stub | |
5775 | may exit and we have no chance to process them back in | |
5776 | remote_wait_ns. */ | |
5777 | mark_async_event_handler (remote_async_inferior_event_token); | |
5778 | return 0; | |
5779 | } | |
5780 | ||
5781 | static void | |
5782 | stop_reply_dtr (struct notif_event *event) | |
5783 | { | |
5784 | struct stop_reply *r = (struct stop_reply *) event; | |
5785 | ||
5786 | VEC_free (cached_reg_t, r->regcache); | |
5787 | } | |
5788 | ||
5789 | static struct notif_event * | |
5790 | remote_notif_stop_alloc_reply (void) | |
5791 | { | |
8d749320 SM |
5792 | /* We cast to a pointer to the "base class". */ |
5793 | struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply); | |
722247f1 YQ |
5794 | |
5795 | r->dtr = stop_reply_dtr; | |
5796 | ||
5797 | return r; | |
5798 | } | |
5799 | ||
5800 | /* A client of notification Stop. */ | |
5801 | ||
5802 | struct notif_client notif_client_stop = | |
5803 | { | |
5804 | "Stop", | |
5805 | "vStopped", | |
5806 | remote_notif_stop_parse, | |
5807 | remote_notif_stop_ack, | |
5808 | remote_notif_stop_can_get_pending_events, | |
5809 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5810 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5811 | }; |
5812 | ||
5813 | /* A parameter to pass data in and out. */ | |
5814 | ||
5815 | struct queue_iter_param | |
5816 | { | |
5817 | void *input; | |
5818 | struct stop_reply *output; | |
5819 | }; | |
5820 | ||
cbb8991c DB |
5821 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5822 | the pid of the process that owns the threads we want to check, or | |
5823 | -1 if we want to check all threads. */ | |
5824 | ||
5825 | static int | |
5826 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5827 | ptid_t thread_ptid) | |
5828 | { | |
5829 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5830 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5831 | { | |
5832 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5833 | return 1; | |
5834 | } | |
5835 | ||
5836 | return 0; | |
5837 | } | |
5838 | ||
5839 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5840 | fork child from the context list passed in DATA. */ | |
5841 | ||
5842 | static int | |
5843 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5844 | QUEUE_ITER (stop_reply_p) *iter, | |
5845 | stop_reply_p event, | |
5846 | void *data) | |
5847 | { | |
19ba03f4 SM |
5848 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
5849 | struct threads_listing_context *context | |
5850 | = (struct threads_listing_context *) param->input; | |
cbb8991c DB |
5851 | |
5852 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5853 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5854 | { | |
5855 | threads_listing_context_remove (&event->ws, context); | |
5856 | } | |
5857 | ||
5858 | return 1; | |
5859 | } | |
5860 | ||
5861 | /* If CONTEXT contains any fork child threads that have not been | |
5862 | reported yet, remove them from the CONTEXT list. If such a | |
5863 | thread exists it is because we are stopped at a fork catchpoint | |
5864 | and have not yet called follow_fork, which will set up the | |
5865 | host-side data structures for the new process. */ | |
5866 | ||
5867 | static void | |
5868 | remove_new_fork_children (struct threads_listing_context *context) | |
5869 | { | |
5870 | struct thread_info * thread; | |
5871 | int pid = -1; | |
5872 | struct notif_client *notif = ¬if_client_stop; | |
5873 | struct queue_iter_param param; | |
5874 | ||
5875 | /* For any threads stopped at a fork event, remove the corresponding | |
5876 | fork child threads from the CONTEXT list. */ | |
5877 | ALL_NON_EXITED_THREADS (thread) | |
5878 | { | |
5879 | struct target_waitstatus *ws = &thread->pending_follow; | |
5880 | ||
5881 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5882 | { | |
5883 | threads_listing_context_remove (ws, context); | |
5884 | } | |
5885 | } | |
5886 | ||
5887 | /* Check for any pending fork events (not reported or processed yet) | |
5888 | in process PID and remove those fork child threads from the | |
5889 | CONTEXT list as well. */ | |
5890 | remote_notif_get_pending_events (notif); | |
5891 | param.input = context; | |
5892 | param.output = NULL; | |
5893 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5894 | remove_child_of_pending_fork, ¶m); | |
5895 | } | |
5896 | ||
f48ff2a7 YQ |
5897 | /* Remove stop replies in the queue if its pid is equal to the given |
5898 | inferior's pid. */ | |
722247f1 YQ |
5899 | |
5900 | static int | |
f48ff2a7 YQ |
5901 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5902 | QUEUE_ITER (stop_reply_p) *iter, | |
5903 | stop_reply_p event, | |
5904 | void *data) | |
722247f1 | 5905 | { |
19ba03f4 SM |
5906 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
5907 | struct inferior *inf = (struct inferior *) param->input; | |
722247f1 | 5908 | |
f48ff2a7 | 5909 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5910 | { |
5911 | stop_reply_xfree (event); | |
5912 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5913 | } | |
5914 | ||
5915 | return 1; | |
5916 | } | |
5917 | ||
f48ff2a7 | 5918 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5919 | |
74531fed | 5920 | static void |
5f4cf0bb | 5921 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5922 | { |
722247f1 YQ |
5923 | int i; |
5924 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5925 | struct stop_reply *reply; |
5926 | struct remote_state *rs = get_remote_state (); | |
5927 | struct remote_notif_state *rns = rs->notif_state; | |
5928 | ||
5929 | /* This function can be notified when an inferior exists. When the | |
5930 | target is not remote, the notification state is NULL. */ | |
5931 | if (rs->remote_desc == NULL) | |
5932 | return; | |
5933 | ||
5934 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5935 | |
74531fed | 5936 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5937 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5938 | { |
722247f1 | 5939 | stop_reply_xfree (reply); |
f48ff2a7 | 5940 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5941 | } |
c906108c | 5942 | |
722247f1 YQ |
5943 | param.input = inf; |
5944 | param.output = NULL; | |
74531fed PA |
5945 | /* Discard the stop replies we have already pulled with |
5946 | vStopped. */ | |
722247f1 | 5947 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5948 | remove_stop_reply_for_inferior, ¶m); |
5949 | } | |
5950 | ||
bcc75809 YQ |
5951 | /* If its remote state is equal to the given remote state, |
5952 | remove EVENT from the stop reply queue. */ | |
5953 | ||
5954 | static int | |
5955 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5956 | QUEUE_ITER (stop_reply_p) *iter, | |
5957 | stop_reply_p event, | |
5958 | void *data) | |
5959 | { | |
19ba03f4 SM |
5960 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
5961 | struct remote_state *rs = (struct remote_state *) param->input; | |
bcc75809 YQ |
5962 | |
5963 | if (event->rs == rs) | |
5964 | { | |
5965 | stop_reply_xfree (event); | |
5966 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5967 | } | |
5968 | ||
5969 | return 1; | |
5970 | } | |
5971 | ||
5972 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5973 | |
5974 | static void | |
bcc75809 | 5975 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5976 | { |
5977 | struct queue_iter_param param; | |
5978 | ||
bcc75809 | 5979 | param.input = rs; |
f48ff2a7 YQ |
5980 | param.output = NULL; |
5981 | /* Discard the stop replies we have already pulled with | |
5982 | vStopped. */ | |
5983 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5984 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5985 | } |
74531fed | 5986 | |
722247f1 YQ |
5987 | /* A parameter to pass data in and out. */ |
5988 | ||
5989 | static int | |
5990 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5991 | QUEUE_ITER (stop_reply_p) *iter, | |
5992 | stop_reply_p event, | |
5993 | void *data) | |
5994 | { | |
19ba03f4 SM |
5995 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
5996 | ptid_t *ptid = (ptid_t *) param->input; | |
722247f1 YQ |
5997 | |
5998 | if (ptid_match (event->ptid, *ptid)) | |
5999 | { | |
6000 | param->output = event; | |
6001 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
6002 | return 0; | |
c8e38a49 | 6003 | } |
722247f1 YQ |
6004 | |
6005 | return 1; | |
74531fed | 6006 | } |
43ff13b4 | 6007 | |
722247f1 YQ |
6008 | /* Remove the first reply in 'stop_reply_queue' which matches |
6009 | PTID. */ | |
2e9f7625 | 6010 | |
722247f1 YQ |
6011 | static struct stop_reply * |
6012 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 6013 | { |
722247f1 YQ |
6014 | struct queue_iter_param param; |
6015 | ||
6016 | param.input = &ptid; | |
6017 | param.output = NULL; | |
6018 | ||
6019 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
6020 | remote_notif_remove_once_on_match, ¶m); | |
6021 | if (notif_debug) | |
6022 | fprintf_unfiltered (gdb_stdlog, | |
6023 | "notif: discard queued event: 'Stop' in %s\n", | |
6024 | target_pid_to_str (ptid)); | |
a744cf53 | 6025 | |
722247f1 | 6026 | return param.output; |
74531fed | 6027 | } |
75c99385 | 6028 | |
74531fed PA |
6029 | /* Look for a queued stop reply belonging to PTID. If one is found, |
6030 | remove it from the queue, and return it. Returns NULL if none is | |
6031 | found. If there are still queued events left to process, tell the | |
6032 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 6033 | |
74531fed PA |
6034 | static struct stop_reply * |
6035 | queued_stop_reply (ptid_t ptid) | |
6036 | { | |
722247f1 | 6037 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 6038 | |
722247f1 | 6039 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
6040 | /* There's still at least an event left. */ |
6041 | mark_async_event_handler (remote_async_inferior_event_token); | |
6042 | ||
722247f1 | 6043 | return r; |
74531fed PA |
6044 | } |
6045 | ||
6046 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
6047 | know that we now have at least one queued event left to pass to the | |
6048 | core side, tell the event loop to get back to target_wait soon. */ | |
6049 | ||
6050 | static void | |
6051 | push_stop_reply (struct stop_reply *new_event) | |
6052 | { | |
722247f1 | 6053 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 6054 | |
722247f1 YQ |
6055 | if (notif_debug) |
6056 | fprintf_unfiltered (gdb_stdlog, | |
6057 | "notif: push 'Stop' %s to queue %d\n", | |
6058 | target_pid_to_str (new_event->ptid), | |
6059 | QUEUE_length (stop_reply_p, | |
6060 | stop_reply_queue)); | |
74531fed PA |
6061 | |
6062 | mark_async_event_handler (remote_async_inferior_event_token); | |
6063 | } | |
6064 | ||
722247f1 YQ |
6065 | static int |
6066 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
6067 | QUEUE_ITER (stop_reply_p) *iter, | |
6068 | struct stop_reply *event, | |
6069 | void *data) | |
6070 | { | |
19ba03f4 | 6071 | ptid_t *ptid = (ptid_t *) data; |
722247f1 YQ |
6072 | |
6073 | return !(ptid_equal (*ptid, event->ptid) | |
6074 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
6075 | } | |
6076 | ||
74531fed PA |
6077 | /* Returns true if we have a stop reply for PTID. */ |
6078 | ||
6079 | static int | |
6080 | peek_stop_reply (ptid_t ptid) | |
6081 | { | |
722247f1 YQ |
6082 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
6083 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
6084 | } |
6085 | ||
1f10ba14 PA |
6086 | /* Skip PACKET until the next semi-colon (or end of string). */ |
6087 | ||
6088 | static char * | |
6089 | skip_to_semicolon (char *p) | |
6090 | { | |
6091 | while (*p != '\0' && *p != ';') | |
6092 | p++; | |
6093 | return p; | |
6094 | } | |
6095 | ||
26d56a93 SL |
6096 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
6097 | starting with P and ending with PEND matches PREFIX. */ | |
6098 | ||
6099 | static int | |
6100 | strprefix (const char *p, const char *pend, const char *prefix) | |
6101 | { | |
6102 | for ( ; p < pend; p++, prefix++) | |
6103 | if (*p != *prefix) | |
6104 | return 0; | |
6105 | return *prefix == '\0'; | |
6106 | } | |
6107 | ||
74531fed PA |
6108 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
6109 | result is stored in EVENT, or throws an error. */ | |
6110 | ||
6111 | static void | |
6112 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
6113 | { | |
6114 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6115 | ULONGEST addr; | |
6116 | char *p; | |
94585166 | 6117 | int skipregs = 0; |
74531fed PA |
6118 | |
6119 | event->ptid = null_ptid; | |
bcc75809 | 6120 | event->rs = get_remote_state (); |
74531fed PA |
6121 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
6122 | event->ws.value.integer = 0; | |
f7e6eed5 | 6123 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 6124 | event->regcache = NULL; |
dc146f7c | 6125 | event->core = -1; |
74531fed PA |
6126 | |
6127 | switch (buf[0]) | |
6128 | { | |
6129 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
6130 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
6131 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
6132 | ss = signal number | |
6133 | n... = register number | |
6134 | r... = register contents | |
6135 | */ | |
6136 | ||
6137 | p = &buf[3]; /* after Txx */ | |
6138 | while (*p) | |
6139 | { | |
6140 | char *p1; | |
cea39f65 | 6141 | int fieldsize; |
43ff13b4 | 6142 | |
1f10ba14 PA |
6143 | p1 = strchr (p, ':'); |
6144 | if (p1 == NULL) | |
6145 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
6146 | Packet: '%s'\n"), | |
6147 | p, buf); | |
6148 | if (p == p1) | |
6149 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
6150 | Packet: '%s'\n"), | |
6151 | p, buf); | |
3c3bea1c | 6152 | |
1f10ba14 PA |
6153 | /* Some "registers" are actually extended stop information. |
6154 | Note if you're adding a new entry here: GDB 7.9 and | |
6155 | earlier assume that all register "numbers" that start | |
6156 | with an hex digit are real register numbers. Make sure | |
6157 | the server only sends such a packet if it knows the | |
6158 | client understands it. */ | |
c8e38a49 | 6159 | |
26d56a93 | 6160 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 6161 | event->ptid = read_ptid (++p1, &p); |
26d56a93 SL |
6162 | else if (strprefix (p, p1, "watch") |
6163 | || strprefix (p, p1, "rwatch") | |
6164 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 6165 | { |
f7e6eed5 | 6166 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
6167 | p = unpack_varlen_hex (++p1, &addr); |
6168 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 6169 | } |
26d56a93 | 6170 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
6171 | { |
6172 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
6173 | ||
6174 | /* Make sure the stub doesn't forget to indicate support | |
6175 | with qSupported. */ | |
6176 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
6177 | error (_("Unexpected swbreak stop reason")); | |
6178 | ||
6179 | /* The value part is documented as "must be empty", | |
6180 | though we ignore it, in case we ever decide to make | |
6181 | use of it in a backward compatible way. */ | |
6182 | p = skip_to_semicolon (p1 + 1); | |
6183 | } | |
26d56a93 | 6184 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
6185 | { |
6186 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
6187 | ||
6188 | /* Make sure the stub doesn't forget to indicate support | |
6189 | with qSupported. */ | |
6190 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
6191 | error (_("Unexpected hwbreak stop reason")); | |
6192 | ||
6193 | /* See above. */ | |
6194 | p = skip_to_semicolon (p1 + 1); | |
6195 | } | |
26d56a93 | 6196 | else if (strprefix (p, p1, "library")) |
cea39f65 | 6197 | { |
1f10ba14 PA |
6198 | event->ws.kind = TARGET_WAITKIND_LOADED; |
6199 | p = skip_to_semicolon (p1 + 1); | |
6200 | } | |
26d56a93 | 6201 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
6202 | { |
6203 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
6204 | /* p1 will indicate "begin" or "end", but it makes | |
6205 | no difference for now, so ignore it. */ | |
6206 | p = skip_to_semicolon (p1 + 1); | |
6207 | } | |
26d56a93 | 6208 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
6209 | { |
6210 | ULONGEST c; | |
a744cf53 | 6211 | |
1f10ba14 PA |
6212 | p = unpack_varlen_hex (++p1, &c); |
6213 | event->core = c; | |
cea39f65 | 6214 | } |
26d56a93 | 6215 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
6216 | { |
6217 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6218 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
6219 | } | |
26d56a93 | 6220 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
6221 | { |
6222 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
6223 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
6224 | } | |
26d56a93 | 6225 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
6226 | { |
6227 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
6228 | p = skip_to_semicolon (p1 + 1); | |
6229 | } | |
94585166 DB |
6230 | else if (strncmp (p, "exec", p1 - p) == 0) |
6231 | { | |
6232 | ULONGEST ignored; | |
6233 | char pathname[PATH_MAX]; | |
6234 | int pathlen; | |
6235 | ||
6236 | /* Determine the length of the execd pathname. */ | |
6237 | p = unpack_varlen_hex (++p1, &ignored); | |
6238 | pathlen = (p - p1) / 2; | |
6239 | ||
6240 | /* Save the pathname for event reporting and for | |
6241 | the next run command. */ | |
6242 | hex2bin (p1, (gdb_byte *) pathname, pathlen); | |
6243 | pathname[pathlen] = '\0'; | |
6244 | ||
6245 | /* This is freed during event handling. */ | |
6246 | event->ws.value.execd_pathname = xstrdup (pathname); | |
6247 | event->ws.kind = TARGET_WAITKIND_EXECD; | |
6248 | ||
6249 | /* Skip the registers included in this packet, since | |
6250 | they may be for an architecture different from the | |
6251 | one used by the original program. */ | |
6252 | skipregs = 1; | |
6253 | } | |
cea39f65 MS |
6254 | else |
6255 | { | |
1f10ba14 PA |
6256 | ULONGEST pnum; |
6257 | char *p_temp; | |
6258 | ||
94585166 DB |
6259 | if (skipregs) |
6260 | { | |
6261 | p = skip_to_semicolon (p1 + 1); | |
6262 | p++; | |
6263 | continue; | |
6264 | } | |
6265 | ||
1f10ba14 PA |
6266 | /* Maybe a real ``P'' register number. */ |
6267 | p_temp = unpack_varlen_hex (p, &pnum); | |
6268 | /* If the first invalid character is the colon, we got a | |
6269 | register number. Otherwise, it's an unknown stop | |
6270 | reason. */ | |
6271 | if (p_temp == p1) | |
6272 | { | |
6273 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
6274 | cached_reg_t cached_reg; | |
43ff13b4 | 6275 | |
1f10ba14 PA |
6276 | if (reg == NULL) |
6277 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 6278 | Packet: '%s'\n"), |
1f10ba14 | 6279 | hex_string (pnum), p, buf); |
c8e38a49 | 6280 | |
1f10ba14 | 6281 | cached_reg.num = reg->regnum; |
4100683b | 6282 | |
1f10ba14 PA |
6283 | p = p1 + 1; |
6284 | fieldsize = hex2bin (p, cached_reg.data, | |
6285 | register_size (target_gdbarch (), | |
6286 | reg->regnum)); | |
6287 | p += 2 * fieldsize; | |
6288 | if (fieldsize < register_size (target_gdbarch (), | |
6289 | reg->regnum)) | |
6290 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6291 | |
1f10ba14 PA |
6292 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6293 | } | |
6294 | else | |
6295 | { | |
6296 | /* Not a number. Silently skip unknown optional | |
6297 | info. */ | |
6298 | p = skip_to_semicolon (p1 + 1); | |
6299 | } | |
cea39f65 | 6300 | } |
c8e38a49 | 6301 | |
cea39f65 MS |
6302 | if (*p != ';') |
6303 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6304 | buf, p); | |
6305 | ++p; | |
6306 | } | |
5b5596ff PA |
6307 | |
6308 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6309 | break; | |
6310 | ||
c8e38a49 PA |
6311 | /* fall through */ |
6312 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6313 | { |
6314 | int sig; | |
6315 | ||
6316 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6317 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6318 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6319 | event->ws.value.sig = (enum gdb_signal) sig; | |
6320 | else | |
6321 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6322 | } | |
c8e38a49 PA |
6323 | break; |
6324 | case 'W': /* Target exited. */ | |
6325 | case 'X': | |
6326 | { | |
6327 | char *p; | |
6328 | int pid; | |
6329 | ULONGEST value; | |
82f73884 | 6330 | |
c8e38a49 PA |
6331 | /* GDB used to accept only 2 hex chars here. Stubs should |
6332 | only send more if they detect GDB supports multi-process | |
6333 | support. */ | |
6334 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6335 | |
c8e38a49 PA |
6336 | if (buf[0] == 'W') |
6337 | { | |
6338 | /* The remote process exited. */ | |
74531fed PA |
6339 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6340 | event->ws.value.integer = value; | |
c8e38a49 PA |
6341 | } |
6342 | else | |
6343 | { | |
6344 | /* The remote process exited with a signal. */ | |
74531fed | 6345 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6346 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6347 | event->ws.value.sig = (enum gdb_signal) value; | |
6348 | else | |
6349 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6350 | } |
82f73884 | 6351 | |
c8e38a49 PA |
6352 | /* If no process is specified, assume inferior_ptid. */ |
6353 | pid = ptid_get_pid (inferior_ptid); | |
6354 | if (*p == '\0') | |
6355 | ; | |
6356 | else if (*p == ';') | |
6357 | { | |
6358 | p++; | |
6359 | ||
0b24eb2d | 6360 | if (*p == '\0') |
82f73884 | 6361 | ; |
61012eef | 6362 | else if (startswith (p, "process:")) |
82f73884 | 6363 | { |
c8e38a49 | 6364 | ULONGEST upid; |
a744cf53 | 6365 | |
c8e38a49 PA |
6366 | p += sizeof ("process:") - 1; |
6367 | unpack_varlen_hex (p, &upid); | |
6368 | pid = upid; | |
82f73884 PA |
6369 | } |
6370 | else | |
6371 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6372 | } |
c8e38a49 PA |
6373 | else |
6374 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6375 | event->ptid = pid_to_ptid (pid); |
6376 | } | |
6377 | break; | |
6378 | } | |
6379 | ||
6380 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6381 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6382 | } | |
6383 | ||
722247f1 YQ |
6384 | /* When the stub wants to tell GDB about a new notification reply, it |
6385 | sends a notification (%Stop, for example). Those can come it at | |
6386 | any time, hence, we have to make sure that any pending | |
6387 | putpkt/getpkt sequence we're making is finished, before querying | |
6388 | the stub for more events with the corresponding ack command | |
6389 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6390 | immediately upon receiving the notification, something like this | |
6391 | could happen: | |
74531fed PA |
6392 | |
6393 | 1.1) --> Hg 1 | |
6394 | 1.2) <-- OK | |
6395 | 1.3) --> g | |
6396 | 1.4) <-- %Stop | |
6397 | 1.5) --> vStopped | |
6398 | 1.6) <-- (registers reply to step #1.3) | |
6399 | ||
6400 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6401 | query. | |
6402 | ||
796cb314 | 6403 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6404 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6405 | doing whatever we were doing: | |
6406 | ||
6407 | 2.1) --> Hg 1 | |
6408 | 2.2) <-- OK | |
6409 | 2.3) --> g | |
6410 | 2.4) <-- %Stop | |
6411 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6412 | 2.5) <-- (registers reply to step #2.3) | |
6413 | ||
6414 | Eventualy after step #2.5, we return to the event loop, which | |
6415 | notices there's an event on the | |
6416 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6417 | associated callback --- the function below. At this point, we're | |
6418 | always safe to start a vStopped sequence. : | |
6419 | ||
6420 | 2.6) --> vStopped | |
6421 | 2.7) <-- T05 thread:2 | |
6422 | 2.8) --> vStopped | |
6423 | 2.9) --> OK | |
6424 | */ | |
6425 | ||
722247f1 YQ |
6426 | void |
6427 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6428 | { |
6429 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6430 | |
f48ff2a7 | 6431 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6432 | { |
722247f1 YQ |
6433 | if (notif_debug) |
6434 | fprintf_unfiltered (gdb_stdlog, | |
6435 | "notif: process: '%s' ack pending event\n", | |
6436 | nc->name); | |
74531fed | 6437 | |
722247f1 | 6438 | /* acknowledge */ |
f48ff2a7 YQ |
6439 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6440 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6441 | |
6442 | while (1) | |
6443 | { | |
6444 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6445 | if (strcmp (rs->buf, "OK") == 0) | |
6446 | break; | |
6447 | else | |
722247f1 | 6448 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6449 | } |
6450 | } | |
722247f1 YQ |
6451 | else |
6452 | { | |
6453 | if (notif_debug) | |
6454 | fprintf_unfiltered (gdb_stdlog, | |
6455 | "notif: process: '%s' no pending reply\n", | |
6456 | nc->name); | |
6457 | } | |
74531fed PA |
6458 | } |
6459 | ||
74531fed PA |
6460 | /* Called when it is decided that STOP_REPLY holds the info of the |
6461 | event that is to be returned to the core. This function always | |
6462 | destroys STOP_REPLY. */ | |
6463 | ||
6464 | static ptid_t | |
6465 | process_stop_reply (struct stop_reply *stop_reply, | |
6466 | struct target_waitstatus *status) | |
6467 | { | |
6468 | ptid_t ptid; | |
6469 | ||
6470 | *status = stop_reply->ws; | |
6471 | ptid = stop_reply->ptid; | |
6472 | ||
6473 | /* If no thread/process was reported by the stub, assume the current | |
6474 | inferior. */ | |
6475 | if (ptid_equal (ptid, null_ptid)) | |
6476 | ptid = inferior_ptid; | |
6477 | ||
5f3563ea PA |
6478 | if (status->kind != TARGET_WAITKIND_EXITED |
6479 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6480 | { |
ee154bee TT |
6481 | struct remote_state *rs = get_remote_state (); |
6482 | ||
5f3563ea PA |
6483 | /* Expedited registers. */ |
6484 | if (stop_reply->regcache) | |
6485 | { | |
217f1f79 | 6486 | struct regcache *regcache |
f5656ead | 6487 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6488 | cached_reg_t *reg; |
6489 | int ix; | |
6490 | ||
6491 | for (ix = 0; | |
6492 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6493 | ix++) | |
217f1f79 | 6494 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6495 | VEC_free (cached_reg_t, stop_reply->regcache); |
6496 | } | |
74531fed | 6497 | |
f7e6eed5 | 6498 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 6499 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
6500 | |
6501 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 6502 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
6503 | } |
6504 | ||
74531fed PA |
6505 | stop_reply_xfree (stop_reply); |
6506 | return ptid; | |
6507 | } | |
6508 | ||
6509 | /* The non-stop mode version of target_wait. */ | |
6510 | ||
6511 | static ptid_t | |
47608cb1 | 6512 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6513 | { |
6514 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6515 | struct stop_reply *stop_reply; |
6516 | int ret; | |
fee9eda9 | 6517 | int is_notif = 0; |
74531fed PA |
6518 | |
6519 | /* If in non-stop mode, get out of getpkt even if a | |
6520 | notification is received. */ | |
6521 | ||
6522 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6523 | 0 /* forever */, &is_notif); |
74531fed PA |
6524 | while (1) |
6525 | { | |
fee9eda9 | 6526 | if (ret != -1 && !is_notif) |
74531fed PA |
6527 | switch (rs->buf[0]) |
6528 | { | |
6529 | case 'E': /* Error of some sort. */ | |
6530 | /* We're out of sync with the target now. Did it continue | |
6531 | or not? We can't tell which thread it was in non-stop, | |
6532 | so just ignore this. */ | |
6533 | warning (_("Remote failure reply: %s"), rs->buf); | |
6534 | break; | |
6535 | case 'O': /* Console output. */ | |
6536 | remote_console_output (rs->buf + 1); | |
6537 | break; | |
6538 | default: | |
6539 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6540 | break; | |
6541 | } | |
6542 | ||
6543 | /* Acknowledge a pending stop reply that may have arrived in the | |
6544 | mean time. */ | |
f48ff2a7 | 6545 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6546 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6547 | |
6548 | /* If indeed we noticed a stop reply, we're done. */ | |
6549 | stop_reply = queued_stop_reply (ptid); | |
6550 | if (stop_reply != NULL) | |
6551 | return process_stop_reply (stop_reply, status); | |
6552 | ||
47608cb1 | 6553 | /* Still no event. If we're just polling for an event, then |
74531fed | 6554 | return to the event loop. */ |
47608cb1 | 6555 | if (options & TARGET_WNOHANG) |
74531fed PA |
6556 | { |
6557 | status->kind = TARGET_WAITKIND_IGNORE; | |
6558 | return minus_one_ptid; | |
6559 | } | |
6560 | ||
47608cb1 | 6561 | /* Otherwise do a blocking wait. */ |
74531fed | 6562 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6563 | 1 /* forever */, &is_notif); |
74531fed PA |
6564 | } |
6565 | } | |
6566 | ||
6567 | /* Wait until the remote machine stops, then return, storing status in | |
6568 | STATUS just as `wait' would. */ | |
6569 | ||
6570 | static ptid_t | |
47608cb1 | 6571 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6572 | { |
6573 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6574 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6575 | char *buf; |
74531fed PA |
6576 | struct stop_reply *stop_reply; |
6577 | ||
47608cb1 PA |
6578 | again: |
6579 | ||
74531fed PA |
6580 | status->kind = TARGET_WAITKIND_IGNORE; |
6581 | status->value.integer = 0; | |
6582 | ||
6583 | stop_reply = queued_stop_reply (ptid); | |
6584 | if (stop_reply != NULL) | |
6585 | return process_stop_reply (stop_reply, status); | |
6586 | ||
6587 | if (rs->cached_wait_status) | |
6588 | /* Use the cached wait status, but only once. */ | |
6589 | rs->cached_wait_status = 0; | |
6590 | else | |
6591 | { | |
6592 | int ret; | |
722247f1 | 6593 | int is_notif; |
567420d1 PA |
6594 | int forever = ((options & TARGET_WNOHANG) == 0 |
6595 | && wait_forever_enabled_p); | |
6596 | ||
6597 | if (!rs->waiting_for_stop_reply) | |
6598 | { | |
6599 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6600 | return minus_one_ptid; | |
6601 | } | |
74531fed PA |
6602 | |
6603 | if (!target_is_async_p ()) | |
6604 | { | |
934b9bac | 6605 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6606 | /* If the user hit C-c before this packet, or between packets, |
6607 | pretend that it was hit right here. */ | |
522002f9 | 6608 | if (check_quit_flag ()) |
74531fed | 6609 | { |
522002f9 | 6610 | clear_quit_flag (); |
934b9bac | 6611 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6612 | } |
6613 | } | |
6614 | ||
6615 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6616 | _never_ wait for ever -> test on target_is_async_p(). | |
6617 | However, before we do that we need to ensure that the caller | |
6618 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6619 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6620 | forever, &is_notif); |
722247f1 | 6621 | |
5e1b953b SDJ |
6622 | if (!target_is_async_p ()) |
6623 | signal (SIGINT, ofunc); | |
6624 | ||
722247f1 YQ |
6625 | /* GDB gets a notification. Return to core as this event is |
6626 | not interesting. */ | |
6627 | if (ret != -1 && is_notif) | |
6628 | return minus_one_ptid; | |
567420d1 PA |
6629 | |
6630 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6631 | return minus_one_ptid; | |
74531fed PA |
6632 | } |
6633 | ||
6634 | buf = rs->buf; | |
6635 | ||
f7e6eed5 | 6636 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6637 | |
6638 | /* We got something. */ | |
6639 | rs->waiting_for_stop_reply = 0; | |
6640 | ||
3a29589a DJ |
6641 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6642 | an 'F' or 'O' packet. */ | |
6643 | if (buf[0] != 'F' && buf[0] != 'O') | |
6644 | rs->ctrlc_pending_p = 0; | |
6645 | ||
74531fed PA |
6646 | switch (buf[0]) |
6647 | { | |
6648 | case 'E': /* Error of some sort. */ | |
6649 | /* We're out of sync with the target now. Did it continue or | |
6650 | not? Not is more likely, so report a stop. */ | |
6651 | warning (_("Remote failure reply: %s"), buf); | |
6652 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6653 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6654 | break; |
6655 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6656 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6657 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6658 | break; |
6659 | case 'T': case 'S': case 'X': case 'W': | |
6660 | { | |
722247f1 YQ |
6661 | struct stop_reply *stop_reply |
6662 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6663 | rs->buf); | |
74531fed | 6664 | |
74531fed | 6665 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6666 | break; |
6667 | } | |
6668 | case 'O': /* Console output. */ | |
6669 | remote_console_output (buf + 1); | |
e24a49d8 | 6670 | |
c8e38a49 PA |
6671 | /* The target didn't really stop; keep waiting. */ |
6672 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6673 | |
c8e38a49 PA |
6674 | break; |
6675 | case '\0': | |
b73be471 | 6676 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6677 | { |
6678 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6679 | remote system doesn't support it. */ | |
6680 | target_terminal_ours_for_output (); | |
6681 | printf_filtered | |
6682 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6683 | gdb_signal_to_name (rs->last_sent_signal)); |
6684 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6685 | target_terminal_inferior (); |
6686 | ||
280ceea3 | 6687 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6688 | putpkt ((char *) buf); |
6689 | ||
6690 | /* We just told the target to resume, so a stop reply is in | |
6691 | order. */ | |
e24a49d8 | 6692 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6693 | break; |
43ff13b4 | 6694 | } |
c8e38a49 PA |
6695 | /* else fallthrough */ |
6696 | default: | |
6697 | warning (_("Invalid remote reply: %s"), buf); | |
6698 | /* Keep waiting. */ | |
6699 | rs->waiting_for_stop_reply = 1; | |
6700 | break; | |
43ff13b4 | 6701 | } |
c8e38a49 | 6702 | |
c8e38a49 | 6703 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6704 | { |
6705 | /* Nothing interesting happened. If we're doing a non-blocking | |
6706 | poll, we're done. Otherwise, go back to waiting. */ | |
6707 | if (options & TARGET_WNOHANG) | |
6708 | return minus_one_ptid; | |
6709 | else | |
6710 | goto again; | |
6711 | } | |
74531fed PA |
6712 | else if (status->kind != TARGET_WAITKIND_EXITED |
6713 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6714 | { |
6715 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6716 | record_currthread (rs, event_ptid); |
82f73884 PA |
6717 | else |
6718 | event_ptid = inferior_ptid; | |
43ff13b4 | 6719 | } |
74531fed PA |
6720 | else |
6721 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6722 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6723 | |
82f73884 | 6724 | return event_ptid; |
43ff13b4 JM |
6725 | } |
6726 | ||
74531fed PA |
6727 | /* Wait until the remote machine stops, then return, storing status in |
6728 | STATUS just as `wait' would. */ | |
6729 | ||
c8e38a49 | 6730 | static ptid_t |
117de6a9 | 6731 | remote_wait (struct target_ops *ops, |
47608cb1 | 6732 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6733 | { |
6734 | ptid_t event_ptid; | |
6735 | ||
74531fed | 6736 | if (non_stop) |
47608cb1 | 6737 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6738 | else |
47608cb1 | 6739 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6740 | |
d9d41e78 | 6741 | if (target_is_async_p ()) |
c8e38a49 | 6742 | { |
74531fed PA |
6743 | /* If there are are events left in the queue tell the event loop |
6744 | to return here. */ | |
722247f1 | 6745 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6746 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6747 | } |
c8e38a49 PA |
6748 | |
6749 | return event_ptid; | |
6750 | } | |
6751 | ||
74ca34ce | 6752 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6753 | |
b96ec7ac | 6754 | static int |
56be3814 | 6755 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6756 | { |
6757 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6758 | char *buf, *p; |
b96ec7ac AC |
6759 | char regp[MAX_REGISTER_SIZE]; |
6760 | int i; | |
6761 | ||
4082afcc | 6762 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6763 | return 0; |
6764 | ||
6765 | if (reg->pnum == -1) | |
6766 | return 0; | |
6767 | ||
2e9f7625 | 6768 | p = rs->buf; |
fcad0fa4 | 6769 | *p++ = 'p'; |
74ca34ce | 6770 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6771 | *p++ = '\0'; |
1f4437a4 MS |
6772 | putpkt (rs->buf); |
6773 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6774 | |
2e9f7625 DJ |
6775 | buf = rs->buf; |
6776 | ||
74ca34ce DJ |
6777 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6778 | { | |
6779 | case PACKET_OK: | |
6780 | break; | |
6781 | case PACKET_UNKNOWN: | |
6782 | return 0; | |
6783 | case PACKET_ERROR: | |
27a9c0bf MS |
6784 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6785 | gdbarch_register_name (get_regcache_arch (regcache), | |
6786 | reg->regnum), | |
6787 | buf); | |
74ca34ce | 6788 | } |
3f9a994c JB |
6789 | |
6790 | /* If this register is unfetchable, tell the regcache. */ | |
6791 | if (buf[0] == 'x') | |
8480adf2 | 6792 | { |
56be3814 | 6793 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6794 | return 1; |
b96ec7ac | 6795 | } |
b96ec7ac | 6796 | |
3f9a994c JB |
6797 | /* Otherwise, parse and supply the value. */ |
6798 | p = buf; | |
6799 | i = 0; | |
6800 | while (p[0] != 0) | |
6801 | { | |
6802 | if (p[1] == 0) | |
74ca34ce | 6803 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6804 | |
6805 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6806 | p += 2; | |
6807 | } | |
56be3814 | 6808 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6809 | return 1; |
b96ec7ac AC |
6810 | } |
6811 | ||
74ca34ce DJ |
6812 | /* Fetch the registers included in the target's 'g' packet. */ |
6813 | ||
29709017 DJ |
6814 | static int |
6815 | send_g_packet (void) | |
c906108c | 6816 | { |
d01949b6 | 6817 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6818 | int buf_len; |
c906108c | 6819 | |
bba74b36 | 6820 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6821 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6822 | |
29709017 DJ |
6823 | /* We can get out of synch in various cases. If the first character |
6824 | in the buffer is not a hex character, assume that has happened | |
6825 | and try to fetch another packet to read. */ | |
6826 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6827 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6828 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6829 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6830 | { | |
6831 | if (remote_debug) | |
6832 | fprintf_unfiltered (gdb_stdlog, | |
6833 | "Bad register packet; fetching a new packet\n"); | |
6834 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6835 | } | |
6836 | ||
74ca34ce DJ |
6837 | buf_len = strlen (rs->buf); |
6838 | ||
6839 | /* Sanity check the received packet. */ | |
6840 | if (buf_len % 2 != 0) | |
6841 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6842 | |
6843 | return buf_len / 2; | |
6844 | } | |
6845 | ||
6846 | static void | |
56be3814 | 6847 | process_g_packet (struct regcache *regcache) |
29709017 | 6848 | { |
4a22f64d | 6849 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6850 | struct remote_state *rs = get_remote_state (); |
6851 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6852 | int i, buf_len; | |
6853 | char *p; | |
6854 | char *regs; | |
6855 | ||
6856 | buf_len = strlen (rs->buf); | |
6857 | ||
6858 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6859 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6860 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6861 | ||
6862 | /* Save the size of the packet sent to us by the target. It is used | |
6863 | as a heuristic when determining the max size of packets that the | |
6864 | target can safely receive. */ | |
6865 | if (rsa->actual_register_packet_size == 0) | |
6866 | rsa->actual_register_packet_size = buf_len; | |
6867 | ||
6868 | /* If this is smaller than we guessed the 'g' packet would be, | |
6869 | update our records. A 'g' reply that doesn't include a register's | |
6870 | value implies either that the register is not available, or that | |
6871 | the 'p' packet must be used. */ | |
6872 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6873 | { |
74ca34ce DJ |
6874 | rsa->sizeof_g_packet = buf_len / 2; |
6875 | ||
4a22f64d | 6876 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6877 | { |
74ca34ce DJ |
6878 | if (rsa->regs[i].pnum == -1) |
6879 | continue; | |
6880 | ||
6881 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6882 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6883 | else |
74ca34ce | 6884 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6885 | } |
74ca34ce | 6886 | } |
b323314b | 6887 | |
224c3ddb | 6888 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
6889 | |
6890 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6891 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6892 | |
c906108c SS |
6893 | /* Reply describes registers byte by byte, each byte encoded as two |
6894 | hex characters. Suck them all up, then supply them to the | |
6895 | register cacheing/storage mechanism. */ | |
6896 | ||
74ca34ce | 6897 | p = rs->buf; |
ea9c271d | 6898 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6899 | { |
74ca34ce DJ |
6900 | if (p[0] == 0 || p[1] == 0) |
6901 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6902 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6903 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6904 | |
c906108c | 6905 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6906 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6907 | else |
6908 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6909 | p += 2; | |
6910 | } | |
6911 | ||
a744cf53 MS |
6912 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6913 | { | |
6914 | struct packet_reg *r = &rsa->regs[i]; | |
6915 | ||
6916 | if (r->in_g_packet) | |
6917 | { | |
6918 | if (r->offset * 2 >= strlen (rs->buf)) | |
6919 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6920 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6921 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6922 | else if (rs->buf[r->offset * 2] == 'x') |
6923 | { | |
6924 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6925 | /* The register isn't available, mark it as such (at | |
6926 | the same time setting the value to zero). */ | |
6927 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6928 | } | |
6929 | else | |
6930 | regcache_raw_supply (regcache, r->regnum, | |
6931 | regs + r->offset); | |
6932 | } | |
6933 | } | |
c906108c SS |
6934 | } |
6935 | ||
29709017 | 6936 | static void |
56be3814 | 6937 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6938 | { |
6939 | send_g_packet (); | |
56be3814 | 6940 | process_g_packet (regcache); |
29709017 DJ |
6941 | } |
6942 | ||
e6e4e701 PA |
6943 | /* Make the remote selected traceframe match GDB's selected |
6944 | traceframe. */ | |
6945 | ||
6946 | static void | |
6947 | set_remote_traceframe (void) | |
6948 | { | |
6949 | int newnum; | |
262e1174 | 6950 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6951 | |
262e1174 | 6952 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6953 | return; |
6954 | ||
6955 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6956 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6957 | |
6958 | newnum = target_trace_find (tfind_number, | |
6959 | get_traceframe_number (), 0, 0, NULL); | |
6960 | ||
6961 | /* Should not happen. If it does, all bets are off. */ | |
6962 | if (newnum != get_traceframe_number ()) | |
6963 | warning (_("could not set remote traceframe")); | |
6964 | } | |
6965 | ||
74ca34ce | 6966 | static void |
28439f5e PA |
6967 | remote_fetch_registers (struct target_ops *ops, |
6968 | struct regcache *regcache, int regnum) | |
74ca34ce | 6969 | { |
74ca34ce DJ |
6970 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6971 | int i; | |
6972 | ||
e6e4e701 | 6973 | set_remote_traceframe (); |
79d7f229 | 6974 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6975 | |
6976 | if (regnum >= 0) | |
6977 | { | |
6978 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6979 | |
74ca34ce DJ |
6980 | gdb_assert (reg != NULL); |
6981 | ||
6982 | /* If this register might be in the 'g' packet, try that first - | |
6983 | we are likely to read more than one register. If this is the | |
6984 | first 'g' packet, we might be overly optimistic about its | |
6985 | contents, so fall back to 'p'. */ | |
6986 | if (reg->in_g_packet) | |
6987 | { | |
56be3814 | 6988 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6989 | if (reg->in_g_packet) |
6990 | return; | |
6991 | } | |
6992 | ||
56be3814 | 6993 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6994 | return; |
6995 | ||
6996 | /* This register is not available. */ | |
56be3814 | 6997 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6998 | |
6999 | return; | |
7000 | } | |
7001 | ||
56be3814 | 7002 | fetch_registers_using_g (regcache); |
74ca34ce | 7003 | |
4a22f64d | 7004 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7005 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7006 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7007 | { |
7008 | /* This register is not available. */ | |
56be3814 | 7009 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
7010 | } |
7011 | } | |
7012 | ||
c906108c SS |
7013 | /* Prepare to store registers. Since we may send them all (using a |
7014 | 'G' request), we have to read out the ones we don't want to change | |
7015 | first. */ | |
7016 | ||
c5aa993b | 7017 | static void |
f32dbf8c | 7018 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 7019 | { |
ea9c271d | 7020 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 7021 | int i; |
cfd77fa1 | 7022 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 7023 | |
c906108c | 7024 | /* Make sure the entire registers array is valid. */ |
4082afcc | 7025 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
7026 | { |
7027 | case PACKET_DISABLE: | |
7028 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 7029 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 7030 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 7031 | if (rsa->regs[i].in_g_packet) |
316f2060 | 7032 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
7033 | break; |
7034 | case PACKET_ENABLE: | |
7035 | break; | |
7036 | } | |
7037 | } | |
7038 | ||
ad10f812 | 7039 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 7040 | packet was not recognized. */ |
5a2468f5 JM |
7041 | |
7042 | static int | |
1f4437a4 MS |
7043 | store_register_using_P (const struct regcache *regcache, |
7044 | struct packet_reg *reg) | |
5a2468f5 | 7045 | { |
4a22f64d | 7046 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 7047 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 7048 | /* Try storing a single register. */ |
6d820c5c | 7049 | char *buf = rs->buf; |
cfd77fa1 | 7050 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 7051 | char *p; |
5a2468f5 | 7052 | |
4082afcc | 7053 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
7054 | return 0; |
7055 | ||
7056 | if (reg->pnum == -1) | |
7057 | return 0; | |
7058 | ||
ea9c271d | 7059 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 7060 | p = buf + strlen (buf); |
56be3814 | 7061 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 7062 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
7063 | putpkt (rs->buf); |
7064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 7065 | |
74ca34ce DJ |
7066 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
7067 | { | |
7068 | case PACKET_OK: | |
7069 | return 1; | |
7070 | case PACKET_ERROR: | |
27a9c0bf MS |
7071 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
7072 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
7073 | case PACKET_UNKNOWN: |
7074 | return 0; | |
7075 | default: | |
7076 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7077 | } | |
c906108c SS |
7078 | } |
7079 | ||
23860348 MS |
7080 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
7081 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
7082 | |
7083 | static void | |
56be3814 | 7084 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 7085 | { |
d01949b6 | 7086 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 7087 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 7088 | gdb_byte *regs; |
c906108c SS |
7089 | char *p; |
7090 | ||
193cb69f AC |
7091 | /* Extract all the registers in the regcache copying them into a |
7092 | local buffer. */ | |
7093 | { | |
b323314b | 7094 | int i; |
a744cf53 | 7095 | |
224c3ddb | 7096 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 7097 | memset (regs, 0, rsa->sizeof_g_packet); |
4a22f64d | 7098 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 7099 | { |
ea9c271d | 7100 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 7101 | |
b323314b | 7102 | if (r->in_g_packet) |
56be3814 | 7103 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
7104 | } |
7105 | } | |
c906108c SS |
7106 | |
7107 | /* Command describes registers byte by byte, | |
7108 | each byte encoded as two hex characters. */ | |
6d820c5c | 7109 | p = rs->buf; |
193cb69f | 7110 | *p++ = 'G'; |
74ca34ce DJ |
7111 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
7112 | updated. */ | |
7113 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
7114 | putpkt (rs->buf); |
7115 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7116 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
7117 | error (_("Could not write registers; remote failure reply '%s'"), |
7118 | rs->buf); | |
c906108c | 7119 | } |
74ca34ce DJ |
7120 | |
7121 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
7122 | of the register cache buffer. FIXME: ignores errors. */ | |
7123 | ||
7124 | static void | |
28439f5e PA |
7125 | remote_store_registers (struct target_ops *ops, |
7126 | struct regcache *regcache, int regnum) | |
74ca34ce | 7127 | { |
74ca34ce DJ |
7128 | struct remote_arch_state *rsa = get_remote_arch_state (); |
7129 | int i; | |
7130 | ||
e6e4e701 | 7131 | set_remote_traceframe (); |
79d7f229 | 7132 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
7133 | |
7134 | if (regnum >= 0) | |
7135 | { | |
7136 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 7137 | |
74ca34ce DJ |
7138 | gdb_assert (reg != NULL); |
7139 | ||
7140 | /* Always prefer to store registers using the 'P' packet if | |
7141 | possible; we often change only a small number of registers. | |
7142 | Sometimes we change a larger number; we'd need help from a | |
7143 | higher layer to know to use 'G'. */ | |
56be3814 | 7144 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
7145 | return; |
7146 | ||
7147 | /* For now, don't complain if we have no way to write the | |
7148 | register. GDB loses track of unavailable registers too | |
7149 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 7150 | any way to read the register, either... */ |
74ca34ce DJ |
7151 | if (!reg->in_g_packet) |
7152 | return; | |
7153 | ||
56be3814 | 7154 | store_registers_using_G (regcache); |
74ca34ce DJ |
7155 | return; |
7156 | } | |
7157 | ||
56be3814 | 7158 | store_registers_using_G (regcache); |
74ca34ce | 7159 | |
4a22f64d | 7160 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 7161 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 7162 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
7163 | /* See above for why we do not issue an error here. */ |
7164 | continue; | |
7165 | } | |
c906108c SS |
7166 | \f |
7167 | ||
7168 | /* Return the number of hex digits in num. */ | |
7169 | ||
7170 | static int | |
fba45db2 | 7171 | hexnumlen (ULONGEST num) |
c906108c SS |
7172 | { |
7173 | int i; | |
7174 | ||
7175 | for (i = 0; num != 0; i++) | |
7176 | num >>= 4; | |
7177 | ||
7178 | return max (i, 1); | |
7179 | } | |
7180 | ||
2df3850c | 7181 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
7182 | |
7183 | static int | |
fba45db2 | 7184 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 7185 | { |
c906108c | 7186 | int len = hexnumlen (num); |
a744cf53 | 7187 | |
2df3850c JM |
7188 | return hexnumnstr (buf, num, len); |
7189 | } | |
7190 | ||
c906108c | 7191 | |
2df3850c | 7192 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 7193 | |
2df3850c | 7194 | static int |
fba45db2 | 7195 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
7196 | { |
7197 | int i; | |
7198 | ||
7199 | buf[width] = '\0'; | |
7200 | ||
7201 | for (i = width - 1; i >= 0; i--) | |
c906108c | 7202 | { |
c5aa993b | 7203 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
7204 | num >>= 4; |
7205 | } | |
7206 | ||
2df3850c | 7207 | return width; |
c906108c SS |
7208 | } |
7209 | ||
23860348 | 7210 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
7211 | |
7212 | static CORE_ADDR | |
fba45db2 | 7213 | remote_address_masked (CORE_ADDR addr) |
c906108c | 7214 | { |
883b9c6c | 7215 | unsigned int address_size = remote_address_size; |
a744cf53 | 7216 | |
911c95a5 UW |
7217 | /* If "remoteaddresssize" was not set, default to target address size. */ |
7218 | if (!address_size) | |
f5656ead | 7219 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
7220 | |
7221 | if (address_size > 0 | |
7222 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
7223 | { |
7224 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 7225 | in a ULONGEST variable. */ |
c906108c | 7226 | ULONGEST mask = 1; |
a744cf53 | 7227 | |
911c95a5 | 7228 | mask = (mask << address_size) - 1; |
c906108c SS |
7229 | addr &= mask; |
7230 | } | |
7231 | return addr; | |
7232 | } | |
7233 | ||
7234 | /* Determine whether the remote target supports binary downloading. | |
7235 | This is accomplished by sending a no-op memory write of zero length | |
7236 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
7237 | the whole packet, since many stubs strip the eighth bit and |
7238 | subsequently compute a wrong checksum, which causes real havoc with | |
7239 | remote_write_bytes. | |
7a292a7a | 7240 | |
96baa820 | 7241 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 7242 | clean. In cases like this, the user should clear "remote |
23860348 | 7243 | X-packet". */ |
96baa820 | 7244 | |
c906108c | 7245 | static void |
fba45db2 | 7246 | check_binary_download (CORE_ADDR addr) |
c906108c | 7247 | { |
d01949b6 | 7248 | struct remote_state *rs = get_remote_state (); |
24b06219 | 7249 | |
4082afcc | 7250 | switch (packet_support (PACKET_X)) |
c906108c | 7251 | { |
96baa820 JM |
7252 | case PACKET_DISABLE: |
7253 | break; | |
7254 | case PACKET_ENABLE: | |
7255 | break; | |
7256 | case PACKET_SUPPORT_UNKNOWN: | |
7257 | { | |
96baa820 | 7258 | char *p; |
802188a7 | 7259 | |
2e9f7625 | 7260 | p = rs->buf; |
96baa820 JM |
7261 | *p++ = 'X'; |
7262 | p += hexnumstr (p, (ULONGEST) addr); | |
7263 | *p++ = ','; | |
7264 | p += hexnumstr (p, (ULONGEST) 0); | |
7265 | *p++ = ':'; | |
7266 | *p = '\0'; | |
802188a7 | 7267 | |
2e9f7625 | 7268 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7269 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7270 | |
2e9f7625 | 7271 | if (rs->buf[0] == '\0') |
96baa820 JM |
7272 | { |
7273 | if (remote_debug) | |
7274 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7275 | "binary downloading NOT " |
7276 | "supported by target\n"); | |
444abaca | 7277 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
7278 | } |
7279 | else | |
7280 | { | |
7281 | if (remote_debug) | |
7282 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 7283 | "binary downloading supported by target\n"); |
444abaca | 7284 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
7285 | } |
7286 | break; | |
7287 | } | |
c906108c SS |
7288 | } |
7289 | } | |
7290 | ||
124e13d9 SM |
7291 | /* Helper function to resize the payload in order to try to get a good |
7292 | alignment. We try to write an amount of data such that the next write will | |
7293 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7294 | ||
7295 | static int | |
7296 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7297 | { | |
7298 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7299 | } | |
7300 | ||
c906108c SS |
7301 | /* Write memory data directly to the remote machine. |
7302 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7303 | HEADER is the starting part of the packet. |
c906108c SS |
7304 | MEMADDR is the address in the remote memory space. |
7305 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7306 | LEN_UNITS is the number of addressable units to write. |
7307 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7308 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7309 | should send data as binary ('X'), or hex-encoded ('M'). | |
7310 | ||
7311 | The function creates packet of the form | |
7312 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7313 | ||
124e13d9 | 7314 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7315 | |
7316 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7317 | are omitted. | |
7318 | ||
9b409511 | 7319 | Return the transferred status, error or OK (an |
124e13d9 SM |
7320 | 'enum target_xfer_status' value). Save the number of addressable units |
7321 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7322 | ||
7323 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7324 | exchange between gdb and the stub could look like (?? in place of the | |
7325 | checksum): | |
7326 | ||
7327 | -> $m1000,4#?? | |
7328 | <- aaaabbbbccccdddd | |
7329 | ||
7330 | -> $M1000,3:eeeeffffeeee#?? | |
7331 | <- OK | |
7332 | ||
7333 | -> $m1000,4#?? | |
7334 | <- eeeeffffeeeedddd */ | |
c906108c | 7335 | |
9b409511 | 7336 | static enum target_xfer_status |
a76d924d | 7337 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7338 | const gdb_byte *myaddr, ULONGEST len_units, |
7339 | int unit_size, ULONGEST *xfered_len_units, | |
7340 | char packet_format, int use_length) | |
c906108c | 7341 | { |
6d820c5c | 7342 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7343 | char *p; |
a76d924d DJ |
7344 | char *plen = NULL; |
7345 | int plenlen = 0; | |
124e13d9 SM |
7346 | int todo_units; |
7347 | int units_written; | |
7348 | int payload_capacity_bytes; | |
7349 | int payload_length_bytes; | |
a76d924d DJ |
7350 | |
7351 | if (packet_format != 'X' && packet_format != 'M') | |
7352 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7353 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7354 | |
124e13d9 | 7355 | if (len_units == 0) |
9b409511 | 7356 | return TARGET_XFER_EOF; |
b2182ed2 | 7357 | |
124e13d9 | 7358 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7359 | |
6d820c5c DJ |
7360 | /* The packet buffer will be large enough for the payload; |
7361 | get_memory_packet_size ensures this. */ | |
a76d924d | 7362 | rs->buf[0] = '\0'; |
c906108c | 7363 | |
a257b5bb | 7364 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7365 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7366 | ||
124e13d9 | 7367 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7368 | if (!use_length) |
0df8b418 | 7369 | /* The comma won't be used. */ |
124e13d9 SM |
7370 | payload_capacity_bytes += 1; |
7371 | payload_capacity_bytes -= strlen (header); | |
7372 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7373 | |
a76d924d | 7374 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7375 | |
a76d924d DJ |
7376 | strcat (rs->buf, header); |
7377 | p = rs->buf + strlen (header); | |
7378 | ||
7379 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7380 | if (packet_format == 'X') | |
c906108c | 7381 | { |
23860348 | 7382 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7383 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7384 | if (use_length) |
124e13d9 SM |
7385 | payload_capacity_bytes -= hexnumlen (todo_units); |
7386 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7387 | } |
7388 | else | |
7389 | { | |
124e13d9 SM |
7390 | /* Number of bytes that will fit. */ |
7391 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7392 | if (use_length) |
124e13d9 SM |
7393 | payload_capacity_bytes -= hexnumlen (todo_units); |
7394 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7395 | } |
a76d924d | 7396 | |
124e13d9 | 7397 | if (todo_units <= 0) |
3de11b2e | 7398 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7399 | _("minimum packet size too small to write data")); |
802188a7 | 7400 | |
6765f3e5 DJ |
7401 | /* If we already need another packet, then try to align the end |
7402 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7403 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7404 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7405 | |
a257b5bb | 7406 | /* Append "<memaddr>". */ |
917317f4 JM |
7407 | memaddr = remote_address_masked (memaddr); |
7408 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7409 | |
a76d924d DJ |
7410 | if (use_length) |
7411 | { | |
7412 | /* Append ",". */ | |
7413 | *p++ = ','; | |
802188a7 | 7414 | |
124e13d9 SM |
7415 | /* Append the length and retain its location and size. It may need to be |
7416 | adjusted once the packet body has been created. */ | |
a76d924d | 7417 | plen = p; |
124e13d9 | 7418 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7419 | p += plenlen; |
7420 | } | |
a257b5bb AC |
7421 | |
7422 | /* Append ":". */ | |
917317f4 JM |
7423 | *p++ = ':'; |
7424 | *p = '\0'; | |
802188a7 | 7425 | |
a257b5bb | 7426 | /* Append the packet body. */ |
a76d924d | 7427 | if (packet_format == 'X') |
917317f4 | 7428 | { |
917317f4 JM |
7429 | /* Binary mode. Send target system values byte by byte, in |
7430 | increasing byte addresses. Only escape certain critical | |
7431 | characters. */ | |
124e13d9 SM |
7432 | payload_length_bytes = |
7433 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7434 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7435 | |
124e13d9 | 7436 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7437 | a second try to keep the end of the packet aligned. Don't do |
7438 | this if the packet is tiny. */ | |
124e13d9 | 7439 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7440 | { |
124e13d9 SM |
7441 | int new_todo_units; |
7442 | ||
7443 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7444 | ||
7445 | if (new_todo_units != units_written) | |
7446 | payload_length_bytes = | |
7447 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7448 | (gdb_byte *) p, &units_written, | |
7449 | payload_capacity_bytes); | |
6765f3e5 DJ |
7450 | } |
7451 | ||
124e13d9 SM |
7452 | p += payload_length_bytes; |
7453 | if (use_length && units_written < todo_units) | |
c906108c | 7454 | { |
802188a7 | 7455 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7456 | and we have actually sent fewer units than planned. |
917317f4 JM |
7457 | Fix-up the length field of the packet. Use the same |
7458 | number of characters as before. */ | |
124e13d9 SM |
7459 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7460 | plenlen); | |
917317f4 | 7461 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7462 | } |
a76d924d DJ |
7463 | } |
7464 | else | |
7465 | { | |
917317f4 JM |
7466 | /* Normal mode: Send target system values byte by byte, in |
7467 | increasing byte addresses. Each byte is encoded as a two hex | |
7468 | value. */ | |
124e13d9 SM |
7469 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7470 | units_written = todo_units; | |
c906108c | 7471 | } |
802188a7 | 7472 | |
2e9f7625 | 7473 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7474 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7475 | |
2e9f7625 | 7476 | if (rs->buf[0] == 'E') |
00d84524 | 7477 | return TARGET_XFER_E_IO; |
802188a7 | 7478 | |
124e13d9 SM |
7479 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7480 | send fewer units than we'd planned. */ | |
7481 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7482 | return TARGET_XFER_OK; |
c906108c SS |
7483 | } |
7484 | ||
a76d924d DJ |
7485 | /* Write memory data directly to the remote machine. |
7486 | This does not inform the data cache; the data cache uses this. | |
7487 | MEMADDR is the address in the remote memory space. | |
7488 | MYADDR is the address of the buffer in our space. | |
7489 | LEN is the number of bytes. | |
7490 | ||
9b409511 YQ |
7491 | Return the transferred status, error or OK (an |
7492 | 'enum target_xfer_status' value). Save the number of bytes | |
7493 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7494 | |
9b409511 YQ |
7495 | static enum target_xfer_status |
7496 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7497 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7498 | { |
7499 | char *packet_format = 0; | |
7500 | ||
7501 | /* Check whether the target supports binary download. */ | |
7502 | check_binary_download (memaddr); | |
7503 | ||
4082afcc | 7504 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7505 | { |
7506 | case PACKET_ENABLE: | |
7507 | packet_format = "X"; | |
7508 | break; | |
7509 | case PACKET_DISABLE: | |
7510 | packet_format = "M"; | |
7511 | break; | |
7512 | case PACKET_SUPPORT_UNKNOWN: | |
7513 | internal_error (__FILE__, __LINE__, | |
7514 | _("remote_write_bytes: bad internal state")); | |
7515 | default: | |
7516 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7517 | } | |
7518 | ||
7519 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7520 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7521 | packet_format[0], 1); |
a76d924d DJ |
7522 | } |
7523 | ||
9217e74e YQ |
7524 | /* Read memory data directly from the remote machine. |
7525 | This does not use the data cache; the data cache uses this. | |
7526 | MEMADDR is the address in the remote memory space. | |
7527 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7528 | LEN_UNITS is the number of addressable memory units to read.. |
7529 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7530 | |
7531 | Return the transferred status, error or OK (an | |
7532 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7533 | transferred in *XFERED_LEN_UNITS. |
7534 | ||
7535 | See the comment of remote_write_bytes_aux for an example of | |
7536 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7537 | |
7538 | static enum target_xfer_status | |
124e13d9 SM |
7539 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7540 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7541 | { |
7542 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7543 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7544 | char *p; |
124e13d9 SM |
7545 | int todo_units; |
7546 | int decoded_bytes; | |
9217e74e | 7547 | |
124e13d9 | 7548 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7549 | /* The packet buffer will be large enough for the payload; |
7550 | get_memory_packet_size ensures this. */ | |
7551 | ||
124e13d9 SM |
7552 | /* Number of units that will fit. */ |
7553 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7554 | |
7555 | /* Construct "m"<memaddr>","<len>". */ | |
7556 | memaddr = remote_address_masked (memaddr); | |
7557 | p = rs->buf; | |
7558 | *p++ = 'm'; | |
7559 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7560 | *p++ = ','; | |
124e13d9 | 7561 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7562 | *p = '\0'; |
7563 | putpkt (rs->buf); | |
7564 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7565 | if (rs->buf[0] == 'E' | |
7566 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7567 | && rs->buf[3] == '\0') | |
7568 | return TARGET_XFER_E_IO; | |
7569 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7570 | characters. */ | |
7571 | p = rs->buf; | |
124e13d9 | 7572 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7573 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7574 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7575 | return TARGET_XFER_OK; |
7576 | } | |
7577 | ||
b55fbac4 YQ |
7578 | /* Using the set of read-only target sections of remote, read live |
7579 | read-only memory. | |
8acf9577 YQ |
7580 | |
7581 | For interface/parameters/return description see target.h, | |
7582 | to_xfer_partial. */ | |
7583 | ||
7584 | static enum target_xfer_status | |
b55fbac4 YQ |
7585 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7586 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7587 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7588 | { |
7589 | struct target_section *secp; | |
7590 | struct target_section_table *table; | |
7591 | ||
7592 | secp = target_section_by_addr (ops, memaddr); | |
7593 | if (secp != NULL | |
7594 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7595 | secp->the_bfd_section) | |
7596 | & SEC_READONLY)) | |
7597 | { | |
7598 | struct target_section *p; | |
7599 | ULONGEST memend = memaddr + len; | |
7600 | ||
7601 | table = target_get_section_table (ops); | |
7602 | ||
7603 | for (p = table->sections; p < table->sections_end; p++) | |
7604 | { | |
7605 | if (memaddr >= p->addr) | |
7606 | { | |
7607 | if (memend <= p->endaddr) | |
7608 | { | |
7609 | /* Entire transfer is within this section. */ | |
124e13d9 | 7610 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7611 | xfered_len); |
8acf9577 YQ |
7612 | } |
7613 | else if (memaddr >= p->endaddr) | |
7614 | { | |
7615 | /* This section ends before the transfer starts. */ | |
7616 | continue; | |
7617 | } | |
7618 | else | |
7619 | { | |
7620 | /* This section overlaps the transfer. Just do half. */ | |
7621 | len = p->endaddr - memaddr; | |
124e13d9 | 7622 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7623 | xfered_len); |
8acf9577 YQ |
7624 | } |
7625 | } | |
7626 | } | |
7627 | } | |
7628 | ||
7629 | return TARGET_XFER_EOF; | |
7630 | } | |
7631 | ||
9217e74e YQ |
7632 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7633 | first if the requested memory is unavailable in traceframe. | |
7634 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7635 | |
9b409511 | 7636 | static enum target_xfer_status |
8acf9577 | 7637 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7638 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7639 | ULONGEST *xfered_len) | |
c906108c | 7640 | { |
6b6aa828 | 7641 | if (len == 0) |
96c4f946 | 7642 | return TARGET_XFER_EOF; |
b2182ed2 | 7643 | |
8acf9577 YQ |
7644 | if (get_traceframe_number () != -1) |
7645 | { | |
7646 | VEC(mem_range_s) *available; | |
7647 | ||
7648 | /* If we fail to get the set of available memory, then the | |
7649 | target does not support querying traceframe info, and so we | |
7650 | attempt reading from the traceframe anyway (assuming the | |
7651 | target implements the old QTro packet then). */ | |
7652 | if (traceframe_available_memory (&available, memaddr, len)) | |
7653 | { | |
7654 | struct cleanup *old_chain; | |
7655 | ||
7656 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7657 | ||
7658 | if (VEC_empty (mem_range_s, available) | |
7659 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7660 | { | |
7661 | enum target_xfer_status res; | |
7662 | ||
7663 | /* Don't read into the traceframe's available | |
7664 | memory. */ | |
7665 | if (!VEC_empty (mem_range_s, available)) | |
7666 | { | |
7667 | LONGEST oldlen = len; | |
7668 | ||
7669 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7670 | gdb_assert (len <= oldlen); | |
7671 | } | |
7672 | ||
7673 | do_cleanups (old_chain); | |
7674 | ||
7675 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7676 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7677 | len, unit_size, xfered_len); |
8acf9577 YQ |
7678 | if (res == TARGET_XFER_OK) |
7679 | return TARGET_XFER_OK; | |
7680 | else | |
7681 | { | |
7682 | /* No use trying further, we know some memory starting | |
7683 | at MEMADDR isn't available. */ | |
7684 | *xfered_len = len; | |
7685 | return TARGET_XFER_UNAVAILABLE; | |
7686 | } | |
7687 | } | |
7688 | ||
7689 | /* Don't try to read more than how much is available, in | |
7690 | case the target implements the deprecated QTro packet to | |
7691 | cater for older GDBs (the target's knowledge of read-only | |
7692 | sections may be outdated by now). */ | |
7693 | len = VEC_index (mem_range_s, available, 0)->length; | |
7694 | ||
7695 | do_cleanups (old_chain); | |
7696 | } | |
7697 | } | |
7698 | ||
124e13d9 | 7699 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7700 | } |
74531fed | 7701 | |
c906108c | 7702 | \f |
c906108c | 7703 | |
a76d924d DJ |
7704 | /* Sends a packet with content determined by the printf format string |
7705 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7706 | whether the packet was a success, a failure, or unknown. */ | |
7707 | ||
77b64a49 PA |
7708 | static enum packet_result remote_send_printf (const char *format, ...) |
7709 | ATTRIBUTE_PRINTF (1, 2); | |
7710 | ||
2c0b251b | 7711 | static enum packet_result |
a76d924d DJ |
7712 | remote_send_printf (const char *format, ...) |
7713 | { | |
7714 | struct remote_state *rs = get_remote_state (); | |
7715 | int max_size = get_remote_packet_size (); | |
a76d924d | 7716 | va_list ap; |
a744cf53 | 7717 | |
a76d924d DJ |
7718 | va_start (ap, format); |
7719 | ||
7720 | rs->buf[0] = '\0'; | |
7721 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7722 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7723 | |
7724 | if (putpkt (rs->buf) < 0) | |
7725 | error (_("Communication problem with target.")); | |
7726 | ||
7727 | rs->buf[0] = '\0'; | |
7728 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7729 | ||
7730 | return packet_check_result (rs->buf); | |
7731 | } | |
7732 | ||
7733 | static void | |
7734 | restore_remote_timeout (void *p) | |
7735 | { | |
7736 | int value = *(int *)p; | |
a744cf53 | 7737 | |
a76d924d DJ |
7738 | remote_timeout = value; |
7739 | } | |
7740 | ||
7741 | /* Flash writing can take quite some time. We'll set | |
7742 | effectively infinite timeout for flash operations. | |
7743 | In future, we'll need to decide on a better approach. */ | |
7744 | static const int remote_flash_timeout = 1000; | |
7745 | ||
7746 | static void | |
7747 | remote_flash_erase (struct target_ops *ops, | |
7748 | ULONGEST address, LONGEST length) | |
7749 | { | |
f5656ead | 7750 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7751 | int saved_remote_timeout = remote_timeout; |
7752 | enum packet_result ret; | |
a76d924d DJ |
7753 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7754 | &saved_remote_timeout); | |
a744cf53 | 7755 | |
a76d924d DJ |
7756 | remote_timeout = remote_flash_timeout; |
7757 | ||
7758 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7759 | phex (address, addr_size), |
a76d924d DJ |
7760 | phex (length, 4)); |
7761 | switch (ret) | |
7762 | { | |
7763 | case PACKET_UNKNOWN: | |
7764 | error (_("Remote target does not support flash erase")); | |
7765 | case PACKET_ERROR: | |
7766 | error (_("Error erasing flash with vFlashErase packet")); | |
7767 | default: | |
7768 | break; | |
7769 | } | |
7770 | ||
7771 | do_cleanups (back_to); | |
7772 | } | |
7773 | ||
9b409511 YQ |
7774 | static enum target_xfer_status |
7775 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7776 | ULONGEST length, ULONGEST *xfered_len, | |
7777 | const gdb_byte *data) | |
a76d924d DJ |
7778 | { |
7779 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7780 | enum target_xfer_status ret; |
a76d924d | 7781 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7782 | &saved_remote_timeout); |
a76d924d DJ |
7783 | |
7784 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7785 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 7786 | xfered_len,'X', 0); |
a76d924d DJ |
7787 | do_cleanups (back_to); |
7788 | ||
7789 | return ret; | |
7790 | } | |
7791 | ||
7792 | static void | |
7793 | remote_flash_done (struct target_ops *ops) | |
7794 | { | |
7795 | int saved_remote_timeout = remote_timeout; | |
7796 | int ret; | |
7797 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7798 | &saved_remote_timeout); | |
7799 | ||
7800 | remote_timeout = remote_flash_timeout; | |
7801 | ret = remote_send_printf ("vFlashDone"); | |
7802 | do_cleanups (back_to); | |
7803 | ||
7804 | switch (ret) | |
7805 | { | |
7806 | case PACKET_UNKNOWN: | |
7807 | error (_("Remote target does not support vFlashDone")); | |
7808 | case PACKET_ERROR: | |
7809 | error (_("Error finishing flash operation")); | |
7810 | default: | |
7811 | break; | |
7812 | } | |
7813 | } | |
7814 | ||
c906108c | 7815 | static void |
fba45db2 | 7816 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7817 | { |
7818 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7819 | } | |
7820 | \f | |
7821 | /* Stuff for dealing with the packets which are part of this protocol. | |
7822 | See comment at top of file for details. */ | |
7823 | ||
1927e618 PA |
7824 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7825 | error to higher layers. Called when a serial error is detected. | |
7826 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7827 | the system error message for errno at function entry and final dot |
7828 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7829 | |
7830 | static void | |
7831 | unpush_and_perror (const char *string) | |
7832 | { | |
d6cb50a2 | 7833 | int saved_errno = errno; |
1927e618 PA |
7834 | |
7835 | remote_unpush_target (); | |
d6cb50a2 JK |
7836 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7837 | safe_strerror (saved_errno)); | |
1927e618 PA |
7838 | } |
7839 | ||
0876f84a | 7840 | /* Read a single character from the remote end. */ |
c906108c SS |
7841 | |
7842 | static int | |
fba45db2 | 7843 | readchar (int timeout) |
c906108c SS |
7844 | { |
7845 | int ch; | |
5d93a237 | 7846 | struct remote_state *rs = get_remote_state (); |
c906108c | 7847 | |
5d93a237 | 7848 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7849 | |
2acceee2 | 7850 | if (ch >= 0) |
0876f84a | 7851 | return ch; |
2acceee2 JM |
7852 | |
7853 | switch ((enum serial_rc) ch) | |
c906108c SS |
7854 | { |
7855 | case SERIAL_EOF: | |
78a095c3 | 7856 | remote_unpush_target (); |
598d3636 | 7857 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7858 | /* no return */ |
c906108c | 7859 | case SERIAL_ERROR: |
1927e618 PA |
7860 | unpush_and_perror (_("Remote communication error. " |
7861 | "Target disconnected.")); | |
2acceee2 | 7862 | /* no return */ |
c906108c | 7863 | case SERIAL_TIMEOUT: |
2acceee2 | 7864 | break; |
c906108c | 7865 | } |
2acceee2 | 7866 | return ch; |
c906108c SS |
7867 | } |
7868 | ||
c33e31fd PA |
7869 | /* Wrapper for serial_write that closes the target and throws if |
7870 | writing fails. */ | |
7871 | ||
7872 | static void | |
7873 | remote_serial_write (const char *str, int len) | |
7874 | { | |
5d93a237 TT |
7875 | struct remote_state *rs = get_remote_state (); |
7876 | ||
7877 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7878 | { |
1927e618 PA |
7879 | unpush_and_perror (_("Remote communication error. " |
7880 | "Target disconnected.")); | |
c33e31fd PA |
7881 | } |
7882 | } | |
7883 | ||
6d820c5c DJ |
7884 | /* Send the command in *BUF to the remote machine, and read the reply |
7885 | into *BUF. Report an error if we get an error reply. Resize | |
7886 | *BUF using xrealloc if necessary to hold the result, and update | |
7887 | *SIZEOF_BUF. */ | |
c906108c SS |
7888 | |
7889 | static void | |
6d820c5c DJ |
7890 | remote_send (char **buf, |
7891 | long *sizeof_buf) | |
c906108c | 7892 | { |
6d820c5c | 7893 | putpkt (*buf); |
c2d11a7d | 7894 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7895 | |
6d820c5c DJ |
7896 | if ((*buf)[0] == 'E') |
7897 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7898 | } |
7899 | ||
6e5abd65 PA |
7900 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7901 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7902 | etc. The caller is responsible for releasing the returned | |
7903 | memory. */ | |
7904 | ||
7905 | static char * | |
7906 | escape_buffer (const char *buf, int n) | |
7907 | { | |
7908 | struct cleanup *old_chain; | |
7909 | struct ui_file *stb; | |
7910 | char *str; | |
6e5abd65 PA |
7911 | |
7912 | stb = mem_fileopen (); | |
7913 | old_chain = make_cleanup_ui_file_delete (stb); | |
7914 | ||
6ef284bd | 7915 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7916 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7917 | do_cleanups (old_chain); |
7918 | return str; | |
7919 | } | |
7920 | ||
c906108c SS |
7921 | /* Display a null-terminated packet on stdout, for debugging, using C |
7922 | string notation. */ | |
7923 | ||
7924 | static void | |
baa336ce | 7925 | print_packet (const char *buf) |
c906108c SS |
7926 | { |
7927 | puts_filtered ("\""); | |
43e526b9 | 7928 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7929 | puts_filtered ("\""); |
7930 | } | |
7931 | ||
7932 | int | |
baa336ce | 7933 | putpkt (const char *buf) |
c906108c SS |
7934 | { |
7935 | return putpkt_binary (buf, strlen (buf)); | |
7936 | } | |
7937 | ||
7938 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7939 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7940 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7941 | and for a possible /0 if we are debugging (remote_debug) and want |
7942 | to print the sent packet as a string. */ | |
c906108c SS |
7943 | |
7944 | static int | |
baa336ce | 7945 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7946 | { |
2d717e4f | 7947 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7948 | int i; |
7949 | unsigned char csum = 0; | |
224c3ddb | 7950 | char *buf2 = (char *) xmalloc (cnt + 6); |
a5c0808e | 7951 | struct cleanup *old_chain = make_cleanup (xfree, buf2); |
085dd6e6 | 7952 | |
c906108c SS |
7953 | int ch; |
7954 | int tcount = 0; | |
7955 | char *p; | |
dd61ec5c | 7956 | char *message; |
c906108c | 7957 | |
e24a49d8 PA |
7958 | /* Catch cases like trying to read memory or listing threads while |
7959 | we're waiting for a stop reply. The remote server wouldn't be | |
7960 | ready to handle this request, so we'd hang and timeout. We don't | |
7961 | have to worry about this in synchronous mode, because in that | |
7962 | case it's not possible to issue a command while the target is | |
74531fed PA |
7963 | running. This is not a problem in non-stop mode, because in that |
7964 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7965 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7966 | { |
7967 | error (_("Cannot execute this command while the target is running.\n" | |
7968 | "Use the \"interrupt\" command to stop the target\n" | |
7969 | "and then try again.")); | |
7970 | } | |
e24a49d8 | 7971 | |
2d717e4f DJ |
7972 | /* We're sending out a new packet. Make sure we don't look at a |
7973 | stale cached response. */ | |
7974 | rs->cached_wait_status = 0; | |
7975 | ||
c906108c SS |
7976 | /* Copy the packet into buffer BUF2, encapsulating it |
7977 | and giving it a checksum. */ | |
7978 | ||
c906108c SS |
7979 | p = buf2; |
7980 | *p++ = '$'; | |
7981 | ||
7982 | for (i = 0; i < cnt; i++) | |
7983 | { | |
7984 | csum += buf[i]; | |
7985 | *p++ = buf[i]; | |
7986 | } | |
7987 | *p++ = '#'; | |
7988 | *p++ = tohex ((csum >> 4) & 0xf); | |
7989 | *p++ = tohex (csum & 0xf); | |
7990 | ||
7991 | /* Send it over and over until we get a positive ack. */ | |
7992 | ||
7993 | while (1) | |
7994 | { | |
7995 | int started_error_output = 0; | |
7996 | ||
7997 | if (remote_debug) | |
7998 | { | |
6e5abd65 PA |
7999 | struct cleanup *old_chain; |
8000 | char *str; | |
8001 | ||
c906108c | 8002 | *p = '\0'; |
6e5abd65 PA |
8003 | str = escape_buffer (buf2, p - buf2); |
8004 | old_chain = make_cleanup (xfree, str); | |
8005 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 8006 | gdb_flush (gdb_stdlog); |
6e5abd65 | 8007 | do_cleanups (old_chain); |
c906108c | 8008 | } |
c33e31fd | 8009 | remote_serial_write (buf2, p - buf2); |
c906108c | 8010 | |
a6f3e723 SL |
8011 | /* If this is a no acks version of the remote protocol, send the |
8012 | packet and move on. */ | |
8013 | if (rs->noack_mode) | |
8014 | break; | |
8015 | ||
74531fed PA |
8016 | /* Read until either a timeout occurs (-2) or '+' is read. |
8017 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
8018 | while (1) |
8019 | { | |
8020 | ch = readchar (remote_timeout); | |
8021 | ||
c5aa993b | 8022 | if (remote_debug) |
c906108c SS |
8023 | { |
8024 | switch (ch) | |
8025 | { | |
8026 | case '+': | |
1216fa2c | 8027 | case '-': |
c906108c SS |
8028 | case SERIAL_TIMEOUT: |
8029 | case '$': | |
74531fed | 8030 | case '%': |
c906108c SS |
8031 | if (started_error_output) |
8032 | { | |
8033 | putchar_unfiltered ('\n'); | |
8034 | started_error_output = 0; | |
8035 | } | |
8036 | } | |
8037 | } | |
8038 | ||
8039 | switch (ch) | |
8040 | { | |
8041 | case '+': | |
8042 | if (remote_debug) | |
0f71a2f6 | 8043 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
a5c0808e | 8044 | do_cleanups (old_chain); |
c906108c | 8045 | return 1; |
1216fa2c AC |
8046 | case '-': |
8047 | if (remote_debug) | |
8048 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 8049 | /* FALLTHROUGH */ |
c906108c | 8050 | case SERIAL_TIMEOUT: |
c5aa993b | 8051 | tcount++; |
c906108c | 8052 | if (tcount > 3) |
a5c0808e PA |
8053 | { |
8054 | do_cleanups (old_chain); | |
8055 | return 0; | |
8056 | } | |
23860348 | 8057 | break; /* Retransmit buffer. */ |
c906108c SS |
8058 | case '$': |
8059 | { | |
40e3f985 | 8060 | if (remote_debug) |
2bc416ba | 8061 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 8062 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
8063 | /* It's probably an old response sent because an ACK |
8064 | was lost. Gobble up the packet and ack it so it | |
8065 | doesn't get retransmitted when we resend this | |
8066 | packet. */ | |
6d820c5c | 8067 | skip_frame (); |
c33e31fd | 8068 | remote_serial_write ("+", 1); |
23860348 | 8069 | continue; /* Now, go look for +. */ |
c906108c | 8070 | } |
74531fed PA |
8071 | |
8072 | case '%': | |
8073 | { | |
8074 | int val; | |
8075 | ||
8076 | /* If we got a notification, handle it, and go back to looking | |
8077 | for an ack. */ | |
8078 | /* We've found the start of a notification. Now | |
8079 | collect the data. */ | |
8080 | val = read_frame (&rs->buf, &rs->buf_size); | |
8081 | if (val >= 0) | |
8082 | { | |
8083 | if (remote_debug) | |
8084 | { | |
6e5abd65 PA |
8085 | struct cleanup *old_chain; |
8086 | char *str; | |
8087 | ||
8088 | str = escape_buffer (rs->buf, val); | |
8089 | old_chain = make_cleanup (xfree, str); | |
8090 | fprintf_unfiltered (gdb_stdlog, | |
8091 | " Notification received: %s\n", | |
8092 | str); | |
8093 | do_cleanups (old_chain); | |
74531fed | 8094 | } |
5965e028 | 8095 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
8096 | /* We're in sync now, rewait for the ack. */ |
8097 | tcount = 0; | |
8098 | } | |
8099 | else | |
8100 | { | |
8101 | if (remote_debug) | |
8102 | { | |
8103 | if (!started_error_output) | |
8104 | { | |
8105 | started_error_output = 1; | |
8106 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
8107 | } | |
8108 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8109 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
8110 | } | |
8111 | } | |
8112 | continue; | |
8113 | } | |
8114 | /* fall-through */ | |
c906108c SS |
8115 | default: |
8116 | if (remote_debug) | |
8117 | { | |
8118 | if (!started_error_output) | |
8119 | { | |
8120 | started_error_output = 1; | |
0f71a2f6 | 8121 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 8122 | } |
0f71a2f6 | 8123 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
8124 | } |
8125 | continue; | |
8126 | } | |
23860348 | 8127 | break; /* Here to retransmit. */ |
c906108c SS |
8128 | } |
8129 | ||
8130 | #if 0 | |
8131 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
8132 | able to get out next time we call QUIT, without anything as |
8133 | violent as interrupt_query. If we want to provide a way out of | |
8134 | here without getting to the next QUIT, it should be based on | |
8135 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
8136 | if (quit_flag) |
8137 | { | |
8138 | quit_flag = 0; | |
8139 | interrupt_query (); | |
8140 | } | |
8141 | #endif | |
8142 | } | |
a5c0808e PA |
8143 | |
8144 | do_cleanups (old_chain); | |
a6f3e723 | 8145 | return 0; |
c906108c SS |
8146 | } |
8147 | ||
6d820c5c DJ |
8148 | /* Come here after finding the start of a frame when we expected an |
8149 | ack. Do our best to discard the rest of this packet. */ | |
8150 | ||
8151 | static void | |
8152 | skip_frame (void) | |
8153 | { | |
8154 | int c; | |
8155 | ||
8156 | while (1) | |
8157 | { | |
8158 | c = readchar (remote_timeout); | |
8159 | switch (c) | |
8160 | { | |
8161 | case SERIAL_TIMEOUT: | |
8162 | /* Nothing we can do. */ | |
8163 | return; | |
8164 | case '#': | |
8165 | /* Discard the two bytes of checksum and stop. */ | |
8166 | c = readchar (remote_timeout); | |
8167 | if (c >= 0) | |
8168 | c = readchar (remote_timeout); | |
8169 | ||
8170 | return; | |
8171 | case '*': /* Run length encoding. */ | |
8172 | /* Discard the repeat count. */ | |
8173 | c = readchar (remote_timeout); | |
8174 | if (c < 0) | |
8175 | return; | |
8176 | break; | |
8177 | default: | |
8178 | /* A regular character. */ | |
8179 | break; | |
8180 | } | |
8181 | } | |
8182 | } | |
8183 | ||
c906108c | 8184 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
8185 | into *BUF, verifying the checksum, length, and handling run-length |
8186 | compression. NUL terminate the buffer. If there is not enough room, | |
8187 | expand *BUF using xrealloc. | |
c906108c | 8188 | |
c2d11a7d JM |
8189 | Returns -1 on error, number of characters in buffer (ignoring the |
8190 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 8191 | SERIAL status indications). */ |
c2d11a7d JM |
8192 | |
8193 | static long | |
6d820c5c DJ |
8194 | read_frame (char **buf_p, |
8195 | long *sizeof_buf) | |
c906108c SS |
8196 | { |
8197 | unsigned char csum; | |
c2d11a7d | 8198 | long bc; |
c906108c | 8199 | int c; |
6d820c5c | 8200 | char *buf = *buf_p; |
a6f3e723 | 8201 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8202 | |
8203 | csum = 0; | |
c2d11a7d | 8204 | bc = 0; |
c906108c SS |
8205 | |
8206 | while (1) | |
8207 | { | |
8208 | c = readchar (remote_timeout); | |
c906108c SS |
8209 | switch (c) |
8210 | { | |
8211 | case SERIAL_TIMEOUT: | |
8212 | if (remote_debug) | |
0f71a2f6 | 8213 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 8214 | return -1; |
c906108c SS |
8215 | case '$': |
8216 | if (remote_debug) | |
0f71a2f6 JM |
8217 | fputs_filtered ("Saw new packet start in middle of old one\n", |
8218 | gdb_stdlog); | |
23860348 | 8219 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
8220 | case '#': |
8221 | { | |
8222 | unsigned char pktcsum; | |
e1b09194 AC |
8223 | int check_0 = 0; |
8224 | int check_1 = 0; | |
c906108c | 8225 | |
c2d11a7d | 8226 | buf[bc] = '\0'; |
c906108c | 8227 | |
e1b09194 AC |
8228 | check_0 = readchar (remote_timeout); |
8229 | if (check_0 >= 0) | |
8230 | check_1 = readchar (remote_timeout); | |
802188a7 | 8231 | |
e1b09194 AC |
8232 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
8233 | { | |
8234 | if (remote_debug) | |
2bc416ba | 8235 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 8236 | gdb_stdlog); |
e1b09194 AC |
8237 | return -1; |
8238 | } | |
8239 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
8240 | { |
8241 | if (remote_debug) | |
2bc416ba | 8242 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 8243 | gdb_stdlog); |
40e3f985 FN |
8244 | return -1; |
8245 | } | |
c906108c | 8246 | |
a6f3e723 SL |
8247 | /* Don't recompute the checksum; with no ack packets we |
8248 | don't have any way to indicate a packet retransmission | |
8249 | is necessary. */ | |
8250 | if (rs->noack_mode) | |
8251 | return bc; | |
8252 | ||
e1b09194 | 8253 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 8254 | if (csum == pktcsum) |
c2d11a7d | 8255 | return bc; |
c906108c | 8256 | |
c5aa993b | 8257 | if (remote_debug) |
c906108c | 8258 | { |
6e5abd65 PA |
8259 | struct cleanup *old_chain; |
8260 | char *str; | |
8261 | ||
8262 | str = escape_buffer (buf, bc); | |
8263 | old_chain = make_cleanup (xfree, str); | |
8264 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8265 | "Bad checksum, sentsum=0x%x, " |
8266 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
8267 | pktcsum, csum, str); |
8268 | do_cleanups (old_chain); | |
c906108c | 8269 | } |
c2d11a7d | 8270 | /* Number of characters in buffer ignoring trailing |
23860348 | 8271 | NULL. */ |
c2d11a7d | 8272 | return -1; |
c906108c | 8273 | } |
23860348 | 8274 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
8275 | { |
8276 | int repeat; | |
c906108c | 8277 | |
a744cf53 | 8278 | csum += c; |
b4501125 AC |
8279 | c = readchar (remote_timeout); |
8280 | csum += c; | |
23860348 | 8281 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 8282 | |
23860348 | 8283 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 8284 | |
6d820c5c | 8285 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 8286 | { |
6d820c5c DJ |
8287 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
8288 | { | |
8289 | /* Make some more room in the buffer. */ | |
8290 | *sizeof_buf += repeat; | |
224c3ddb | 8291 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c DJ |
8292 | buf = *buf_p; |
8293 | } | |
8294 | ||
c2d11a7d JM |
8295 | memset (&buf[bc], buf[bc - 1], repeat); |
8296 | bc += repeat; | |
c2c6d25f JM |
8297 | continue; |
8298 | } | |
8299 | ||
c2d11a7d | 8300 | buf[bc] = '\0'; |
6d820c5c | 8301 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8302 | return -1; |
c2c6d25f | 8303 | } |
c906108c | 8304 | default: |
6d820c5c | 8305 | if (bc >= *sizeof_buf - 1) |
c906108c | 8306 | { |
6d820c5c DJ |
8307 | /* Make some more room in the buffer. */ |
8308 | *sizeof_buf *= 2; | |
224c3ddb | 8309 | *buf_p = (char *) xrealloc (*buf_p, *sizeof_buf); |
6d820c5c | 8310 | buf = *buf_p; |
c906108c SS |
8311 | } |
8312 | ||
6d820c5c DJ |
8313 | buf[bc++] = c; |
8314 | csum += c; | |
8315 | continue; | |
c906108c SS |
8316 | } |
8317 | } | |
8318 | } | |
8319 | ||
8320 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8321 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8322 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8323 | rather than timing out; this is used (in synchronous mode) to wait | |
8324 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8325 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8326 | don't have to change all the calls to getpkt to deal with the | |
8327 | return value, because at the moment I don't know what the right | |
23860348 | 8328 | thing to do it for those. */ |
c906108c | 8329 | void |
6d820c5c DJ |
8330 | getpkt (char **buf, |
8331 | long *sizeof_buf, | |
c2d11a7d | 8332 | int forever) |
d9fcf2fb JM |
8333 | { |
8334 | int timed_out; | |
8335 | ||
8336 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8337 | } | |
8338 | ||
8339 | ||
8340 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8341 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8342 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8343 | rather than timing out; this is used (in synchronous mode) to wait | |
8344 | for a target that is is executing user code to stop. If FOREVER == | |
8345 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8346 | indication of this to the caller. Otherwise return the number of |
8347 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8348 | enough reason to return to the caller. *IS_NOTIF is an output |
8349 | boolean that indicates whether *BUF holds a notification or not | |
8350 | (a regular packet). */ | |
74531fed | 8351 | |
3172dc30 | 8352 | static int |
74531fed | 8353 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8354 | int expecting_notif, int *is_notif) |
c906108c | 8355 | { |
2d717e4f | 8356 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8357 | int c; |
8358 | int tries; | |
8359 | int timeout; | |
df4b58fe | 8360 | int val = -1; |
c906108c | 8361 | |
2d717e4f DJ |
8362 | /* We're reading a new response. Make sure we don't look at a |
8363 | previously cached response. */ | |
8364 | rs->cached_wait_status = 0; | |
8365 | ||
6d820c5c | 8366 | strcpy (*buf, "timeout"); |
c906108c SS |
8367 | |
8368 | if (forever) | |
74531fed PA |
8369 | timeout = watchdog > 0 ? watchdog : -1; |
8370 | else if (expecting_notif) | |
8371 | timeout = 0; /* There should already be a char in the buffer. If | |
8372 | not, bail out. */ | |
c906108c SS |
8373 | else |
8374 | timeout = remote_timeout; | |
8375 | ||
8376 | #define MAX_TRIES 3 | |
8377 | ||
74531fed PA |
8378 | /* Process any number of notifications, and then return when |
8379 | we get a packet. */ | |
8380 | for (;;) | |
c906108c | 8381 | { |
d9c43928 | 8382 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8383 | times. */ |
8384 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8385 | { |
74531fed PA |
8386 | /* This can loop forever if the remote side sends us |
8387 | characters continuously, but if it pauses, we'll get | |
8388 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8389 | we'll count that as a retry. | |
8390 | ||
8391 | Note that even when forever is set, we will only wait | |
8392 | forever prior to the start of a packet. After that, we | |
8393 | expect characters to arrive at a brisk pace. They should | |
8394 | show up within remote_timeout intervals. */ | |
8395 | do | |
8396 | c = readchar (timeout); | |
8397 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8398 | |
8399 | if (c == SERIAL_TIMEOUT) | |
8400 | { | |
74531fed PA |
8401 | if (expecting_notif) |
8402 | return -1; /* Don't complain, it's normal to not get | |
8403 | anything in this case. */ | |
8404 | ||
23860348 | 8405 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8406 | { |
2acceee2 | 8407 | QUIT; |
78a095c3 | 8408 | remote_unpush_target (); |
598d3636 JK |
8409 | throw_error (TARGET_CLOSE_ERROR, |
8410 | _("Watchdog timeout has expired. " | |
8411 | "Target detached.")); | |
c906108c | 8412 | } |
c906108c | 8413 | if (remote_debug) |
0f71a2f6 | 8414 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8415 | } |
74531fed PA |
8416 | else |
8417 | { | |
8418 | /* We've found the start of a packet or notification. | |
8419 | Now collect the data. */ | |
8420 | val = read_frame (buf, sizeof_buf); | |
8421 | if (val >= 0) | |
8422 | break; | |
8423 | } | |
8424 | ||
c33e31fd | 8425 | remote_serial_write ("-", 1); |
c906108c | 8426 | } |
c906108c | 8427 | |
74531fed PA |
8428 | if (tries > MAX_TRIES) |
8429 | { | |
8430 | /* We have tried hard enough, and just can't receive the | |
8431 | packet/notification. Give up. */ | |
8432 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8433 | |
74531fed PA |
8434 | /* Skip the ack char if we're in no-ack mode. */ |
8435 | if (!rs->noack_mode) | |
c33e31fd | 8436 | remote_serial_write ("+", 1); |
74531fed PA |
8437 | return -1; |
8438 | } | |
c906108c | 8439 | |
74531fed PA |
8440 | /* If we got an ordinary packet, return that to our caller. */ |
8441 | if (c == '$') | |
c906108c SS |
8442 | { |
8443 | if (remote_debug) | |
43e526b9 | 8444 | { |
6e5abd65 PA |
8445 | struct cleanup *old_chain; |
8446 | char *str; | |
8447 | ||
8448 | str = escape_buffer (*buf, val); | |
8449 | old_chain = make_cleanup (xfree, str); | |
8450 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8451 | do_cleanups (old_chain); | |
43e526b9 | 8452 | } |
a6f3e723 SL |
8453 | |
8454 | /* Skip the ack char if we're in no-ack mode. */ | |
8455 | if (!rs->noack_mode) | |
c33e31fd | 8456 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8457 | if (is_notif != NULL) |
8458 | *is_notif = 0; | |
0876f84a | 8459 | return val; |
c906108c SS |
8460 | } |
8461 | ||
74531fed PA |
8462 | /* If we got a notification, handle it, and go back to looking |
8463 | for a packet. */ | |
8464 | else | |
8465 | { | |
8466 | gdb_assert (c == '%'); | |
8467 | ||
8468 | if (remote_debug) | |
8469 | { | |
6e5abd65 PA |
8470 | struct cleanup *old_chain; |
8471 | char *str; | |
8472 | ||
8473 | str = escape_buffer (*buf, val); | |
8474 | old_chain = make_cleanup (xfree, str); | |
8475 | fprintf_unfiltered (gdb_stdlog, | |
8476 | " Notification received: %s\n", | |
8477 | str); | |
8478 | do_cleanups (old_chain); | |
74531fed | 8479 | } |
fee9eda9 YQ |
8480 | if (is_notif != NULL) |
8481 | *is_notif = 1; | |
c906108c | 8482 | |
5965e028 | 8483 | handle_notification (rs->notif_state, *buf); |
c906108c | 8484 | |
74531fed | 8485 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8486 | |
74531fed | 8487 | if (expecting_notif) |
fee9eda9 | 8488 | return val; |
74531fed PA |
8489 | } |
8490 | } | |
8491 | } | |
8492 | ||
8493 | static int | |
8494 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8495 | { | |
fee9eda9 | 8496 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8497 | } |
8498 | ||
8499 | static int | |
fee9eda9 YQ |
8500 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8501 | int *is_notif) | |
74531fed | 8502 | { |
fee9eda9 YQ |
8503 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8504 | is_notif); | |
c906108c | 8505 | } |
74531fed | 8506 | |
cbb8991c DB |
8507 | /* Check whether EVENT is a fork event for the process specified |
8508 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8509 | ||
8510 | static int | |
8511 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8512 | QUEUE_ITER (stop_reply_p) *iter, | |
8513 | stop_reply_p event, | |
8514 | void *data) | |
8515 | { | |
19ba03f4 | 8516 | struct queue_iter_param *param = (struct queue_iter_param *) data; |
cbb8991c DB |
8517 | int parent_pid = *(int *) param->input; |
8518 | ||
8519 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8520 | { | |
8521 | struct remote_state *rs = get_remote_state (); | |
8522 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8523 | int res; | |
8524 | ||
8525 | res = remote_vkill (child_pid, rs); | |
8526 | if (res != 0) | |
8527 | error (_("Can't kill fork child process %d"), child_pid); | |
8528 | } | |
8529 | ||
8530 | return 1; | |
8531 | } | |
8532 | ||
8533 | /* Kill any new fork children of process PID that haven't been | |
8534 | processed by follow_fork. */ | |
8535 | ||
8536 | static void | |
8537 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8538 | { | |
8539 | struct thread_info *thread; | |
8540 | struct notif_client *notif = ¬if_client_stop; | |
8541 | struct queue_iter_param param; | |
8542 | ||
8543 | /* Kill the fork child threads of any threads in process PID | |
8544 | that are stopped at a fork event. */ | |
8545 | ALL_NON_EXITED_THREADS (thread) | |
8546 | { | |
8547 | struct target_waitstatus *ws = &thread->pending_follow; | |
8548 | ||
8549 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8550 | { | |
8551 | struct remote_state *rs = get_remote_state (); | |
8552 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8553 | int res; | |
8554 | ||
8555 | res = remote_vkill (child_pid, rs); | |
8556 | if (res != 0) | |
8557 | error (_("Can't kill fork child process %d"), child_pid); | |
8558 | } | |
8559 | } | |
8560 | ||
8561 | /* Check for any pending fork events (not reported or processed yet) | |
8562 | in process PID and kill those fork child threads as well. */ | |
8563 | remote_notif_get_pending_events (notif); | |
8564 | param.input = &pid; | |
8565 | param.output = NULL; | |
8566 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8567 | kill_child_of_pending_fork, ¶m); | |
8568 | } | |
8569 | ||
c906108c SS |
8570 | \f |
8571 | static void | |
7d85a9c0 | 8572 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8573 | { |
0fdf84ca PA |
8574 | |
8575 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8576 | aren't on speaking terms with the remote system. */ |
492d29ea | 8577 | TRY |
0fdf84ca PA |
8578 | { |
8579 | putpkt ("k"); | |
8580 | } | |
492d29ea | 8581 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8582 | { |
8583 | if (ex.error == TARGET_CLOSE_ERROR) | |
8584 | { | |
8585 | /* If we got an (EOF) error that caused the target | |
8586 | to go away, then we're done, that's what we wanted. | |
8587 | "k" is susceptible to cause a premature EOF, given | |
8588 | that the remote server isn't actually required to | |
8589 | reply to "k", and it can happen that it doesn't | |
8590 | even get to reply ACK to the "k". */ | |
8591 | return; | |
8592 | } | |
8593 | ||
8594 | /* Otherwise, something went wrong. We didn't actually kill | |
8595 | the target. Just propagate the exception, and let the | |
8596 | user or higher layers decide what to do. */ | |
8597 | throw_exception (ex); | |
8598 | } | |
492d29ea | 8599 | END_CATCH |
43ff13b4 | 8600 | |
0fdf84ca PA |
8601 | /* We've killed the remote end, we get to mourn it. Since this is |
8602 | target remote, single-process, mourning the inferior also | |
8603 | unpushes remote_ops. */ | |
43ff13b4 JM |
8604 | target_mourn_inferior (); |
8605 | } | |
8606 | ||
82f73884 PA |
8607 | static int |
8608 | remote_vkill (int pid, struct remote_state *rs) | |
8609 | { | |
4082afcc | 8610 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8611 | return -1; |
8612 | ||
8613 | /* Tell the remote target to detach. */ | |
bba74b36 | 8614 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8615 | putpkt (rs->buf); |
8616 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8617 | ||
4082afcc PA |
8618 | switch (packet_ok (rs->buf, |
8619 | &remote_protocol_packets[PACKET_vKill])) | |
8620 | { | |
8621 | case PACKET_OK: | |
8622 | return 0; | |
8623 | case PACKET_ERROR: | |
8624 | return 1; | |
8625 | case PACKET_UNKNOWN: | |
8626 | return -1; | |
8627 | default: | |
8628 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8629 | } | |
82f73884 PA |
8630 | } |
8631 | ||
8632 | static void | |
7d85a9c0 | 8633 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8634 | { |
8635 | int res; | |
8636 | int pid = ptid_get_pid (inferior_ptid); | |
8637 | struct remote_state *rs = get_remote_state (); | |
8638 | ||
cbb8991c DB |
8639 | /* If we're stopped while forking and we haven't followed yet, kill the |
8640 | child task. We need to do this before killing the parent task | |
8641 | because if this is a vfork then the parent will be sleeping. */ | |
8642 | kill_new_fork_children (pid, rs); | |
8643 | ||
82f73884 | 8644 | res = remote_vkill (pid, rs); |
901f9912 | 8645 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8646 | { |
8647 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8648 | to specify the pid. */ | |
8649 | ||
8650 | putpkt ("k"); | |
8651 | #if 0 | |
8652 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8653 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8654 | res = 1; | |
8655 | #else | |
8656 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8657 | we do or not. For the existing stubs, kill is a noop. */ | |
8658 | res = 0; | |
8659 | #endif | |
8660 | } | |
8661 | ||
8662 | if (res != 0) | |
8663 | error (_("Can't kill process")); | |
8664 | ||
82f73884 PA |
8665 | target_mourn_inferior (); |
8666 | } | |
8667 | ||
c906108c | 8668 | static void |
20f796c9 | 8669 | remote_mourn (struct target_ops *target) |
c906108c SS |
8670 | { |
8671 | unpush_target (target); | |
ce5ce7ed | 8672 | |
8a2492ee PA |
8673 | /* remote_close takes care of doing most of the clean up. */ |
8674 | generic_mourn_inferior (); | |
c906108c SS |
8675 | } |
8676 | ||
2d717e4f | 8677 | static void |
20f796c9 | 8678 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8679 | { |
8680 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8681 | |
e24a49d8 PA |
8682 | /* In case we got here due to an error, but we're going to stay |
8683 | connected. */ | |
8684 | rs->waiting_for_stop_reply = 0; | |
8685 | ||
dc1981d7 PA |
8686 | /* If the current general thread belonged to the process we just |
8687 | detached from or has exited, the remote side current general | |
8688 | thread becomes undefined. Considering a case like this: | |
8689 | ||
8690 | - We just got here due to a detach. | |
8691 | - The process that we're detaching from happens to immediately | |
8692 | report a global breakpoint being hit in non-stop mode, in the | |
8693 | same thread we had selected before. | |
8694 | - GDB attaches to this process again. | |
8695 | - This event happens to be the next event we handle. | |
8696 | ||
8697 | GDB would consider that the current general thread didn't need to | |
8698 | be set on the stub side (with Hg), since for all it knew, | |
8699 | GENERAL_THREAD hadn't changed. | |
8700 | ||
8701 | Notice that although in all-stop mode, the remote server always | |
8702 | sets the current thread to the thread reporting the stop event, | |
8703 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8704 | not* change the current thread when reporting a breakpoint hit, | |
8705 | due to the decoupling of event reporting and event handling. | |
8706 | ||
8707 | To keep things simple, we always invalidate our notion of the | |
8708 | current thread. */ | |
47f8a51d | 8709 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8710 | |
2d717e4f DJ |
8711 | /* Unlike "target remote", we do not want to unpush the target; then |
8712 | the next time the user says "run", we won't be connected. */ | |
8713 | ||
48aa3c27 PA |
8714 | /* Call common code to mark the inferior as not running. */ |
8715 | generic_mourn_inferior (); | |
8716 | ||
d729566a | 8717 | if (!have_inferiors ()) |
2d717e4f | 8718 | { |
82f73884 PA |
8719 | if (!remote_multi_process_p (rs)) |
8720 | { | |
8721 | /* Check whether the target is running now - some remote stubs | |
8722 | automatically restart after kill. */ | |
8723 | putpkt ("?"); | |
8724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8725 | ||
8726 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8727 | { | |
3e43a32a MS |
8728 | /* Assume that the target has been restarted. Set |
8729 | inferior_ptid so that bits of core GDB realizes | |
8730 | there's something here, e.g., so that the user can | |
8731 | say "kill" again. */ | |
82f73884 PA |
8732 | inferior_ptid = magic_null_ptid; |
8733 | } | |
82f73884 | 8734 | } |
2d717e4f DJ |
8735 | } |
8736 | } | |
c906108c | 8737 | |
03583c20 | 8738 | static int |
2bfc0540 | 8739 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8740 | { |
4082afcc | 8741 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8742 | } |
8743 | ||
8744 | static void | |
8745 | extended_remote_disable_randomization (int val) | |
8746 | { | |
8747 | struct remote_state *rs = get_remote_state (); | |
8748 | char *reply; | |
8749 | ||
bba74b36 YQ |
8750 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8751 | val); | |
03583c20 UW |
8752 | putpkt (rs->buf); |
8753 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8754 | if (*reply == '\0') | |
8755 | error (_("Target does not support QDisableRandomization.")); | |
8756 | if (strcmp (reply, "OK") != 0) | |
8757 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8758 | } | |
8759 | ||
2d717e4f DJ |
8760 | static int |
8761 | extended_remote_run (char *args) | |
8762 | { | |
8763 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8764 | int len; |
94585166 | 8765 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 8766 | |
2d717e4f DJ |
8767 | /* If the user has disabled vRun support, or we have detected that |
8768 | support is not available, do not try it. */ | |
4082afcc | 8769 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8770 | return -1; |
424163ea | 8771 | |
2d717e4f DJ |
8772 | strcpy (rs->buf, "vRun;"); |
8773 | len = strlen (rs->buf); | |
c906108c | 8774 | |
2d717e4f DJ |
8775 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8776 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8777 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8778 | strlen (remote_exec_file)); | |
2d717e4f | 8779 | |
d1a41061 | 8780 | gdb_assert (args != NULL); |
2d717e4f DJ |
8781 | if (*args) |
8782 | { | |
8783 | struct cleanup *back_to; | |
8784 | int i; | |
8785 | char **argv; | |
8786 | ||
d1a41061 | 8787 | argv = gdb_buildargv (args); |
6e366df1 | 8788 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8789 | for (i = 0; argv[i] != NULL; i++) |
8790 | { | |
8791 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8792 | error (_("Argument list too long for run packet")); | |
8793 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8794 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8795 | strlen (argv[i])); | |
2d717e4f DJ |
8796 | } |
8797 | do_cleanups (back_to); | |
8798 | } | |
8799 | ||
8800 | rs->buf[len++] = '\0'; | |
8801 | ||
8802 | putpkt (rs->buf); | |
8803 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8804 | ||
4082afcc | 8805 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8806 | { |
4082afcc | 8807 | case PACKET_OK: |
3405876a | 8808 | /* We have a wait response. All is well. */ |
2d717e4f | 8809 | return 0; |
4082afcc PA |
8810 | case PACKET_UNKNOWN: |
8811 | return -1; | |
8812 | case PACKET_ERROR: | |
2d717e4f DJ |
8813 | if (remote_exec_file[0] == '\0') |
8814 | error (_("Running the default executable on the remote target failed; " | |
8815 | "try \"set remote exec-file\"?")); | |
8816 | else | |
8817 | error (_("Running \"%s\" on the remote target failed"), | |
8818 | remote_exec_file); | |
4082afcc PA |
8819 | default: |
8820 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8821 | } |
c906108c SS |
8822 | } |
8823 | ||
2d717e4f DJ |
8824 | /* In the extended protocol we want to be able to do things like |
8825 | "run" and have them basically work as expected. So we need | |
8826 | a special create_inferior function. We support changing the | |
8827 | executable file and the command line arguments, but not the | |
8828 | environment. */ | |
8829 | ||
43ff13b4 | 8830 | static void |
77a19445 TT |
8831 | extended_remote_create_inferior (struct target_ops *ops, |
8832 | char *exec_file, char *args, | |
8833 | char **env, int from_tty) | |
43ff13b4 | 8834 | { |
3405876a PA |
8835 | int run_worked; |
8836 | char *stop_reply; | |
8837 | struct remote_state *rs = get_remote_state (); | |
94585166 | 8838 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 8839 | |
43ff13b4 | 8840 | /* If running asynchronously, register the target file descriptor |
23860348 | 8841 | with the event loop. */ |
75c99385 | 8842 | if (target_can_async_p ()) |
6a3753b3 | 8843 | target_async (1); |
43ff13b4 | 8844 | |
03583c20 | 8845 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8846 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8847 | extended_remote_disable_randomization (disable_randomization); |
8848 | ||
43ff13b4 | 8849 | /* Now restart the remote server. */ |
3405876a PA |
8850 | run_worked = extended_remote_run (args) != -1; |
8851 | if (!run_worked) | |
2d717e4f DJ |
8852 | { |
8853 | /* vRun was not supported. Fail if we need it to do what the | |
8854 | user requested. */ | |
8855 | if (remote_exec_file[0]) | |
8856 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8857 | if (args[0]) | |
8858 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8859 | |
2d717e4f DJ |
8860 | /* Fall back to "R". */ |
8861 | extended_remote_restart (); | |
8862 | } | |
424163ea | 8863 | |
6c95b8df PA |
8864 | if (!have_inferiors ()) |
8865 | { | |
8866 | /* Clean up from the last time we ran, before we mark the target | |
8867 | running again. This will mark breakpoints uninserted, and | |
8868 | get_offsets may insert breakpoints. */ | |
8869 | init_thread_list (); | |
8870 | init_wait_for_inferior (); | |
8871 | } | |
45280a52 | 8872 | |
3405876a PA |
8873 | /* vRun's success return is a stop reply. */ |
8874 | stop_reply = run_worked ? rs->buf : NULL; | |
8875 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8876 | |
2d717e4f DJ |
8877 | /* Get updated offsets, if the stub uses qOffsets. */ |
8878 | get_offsets (); | |
2d717e4f | 8879 | } |
c906108c | 8880 | \f |
c5aa993b | 8881 | |
b775012e LM |
8882 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8883 | the list of conditions (in agent expression bytecode format), if any, the | |
8884 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8885 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8886 | |
8887 | static int | |
8888 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8889 | struct bp_target_info *bp_tgt, char *buf, |
8890 | char *buf_end) | |
b775012e LM |
8891 | { |
8892 | struct agent_expr *aexpr = NULL; | |
8893 | int i, ix; | |
8894 | char *pkt; | |
8895 | char *buf_start = buf; | |
8896 | ||
8897 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8898 | return 0; | |
8899 | ||
8900 | buf += strlen (buf); | |
bba74b36 | 8901 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8902 | buf++; |
8903 | ||
8904 | /* Send conditions to the target and free the vector. */ | |
8905 | for (ix = 0; | |
8906 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8907 | ix++) | |
8908 | { | |
bba74b36 | 8909 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8910 | buf += strlen (buf); |
8911 | for (i = 0; i < aexpr->len; ++i) | |
8912 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8913 | *buf = '\0'; | |
8914 | } | |
b775012e LM |
8915 | return 0; |
8916 | } | |
8917 | ||
d3ce09f5 SS |
8918 | static void |
8919 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8920 | struct bp_target_info *bp_tgt, char *buf) | |
8921 | { | |
8922 | struct agent_expr *aexpr = NULL; | |
8923 | int i, ix; | |
8924 | ||
8925 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8926 | return; | |
8927 | ||
8928 | buf += strlen (buf); | |
8929 | ||
8930 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8931 | buf += strlen (buf); | |
8932 | ||
8933 | /* Concatenate all the agent expressions that are commands into the | |
8934 | cmds parameter. */ | |
8935 | for (ix = 0; | |
8936 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8937 | ix++) | |
8938 | { | |
8939 | sprintf (buf, "X%x,", aexpr->len); | |
8940 | buf += strlen (buf); | |
8941 | for (i = 0; i < aexpr->len; ++i) | |
8942 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8943 | *buf = '\0'; | |
8944 | } | |
d3ce09f5 SS |
8945 | } |
8946 | ||
8181d85f DJ |
8947 | /* Insert a breakpoint. On targets that have software breakpoint |
8948 | support, we ask the remote target to do the work; on targets | |
8949 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8950 | |
8951 | static int | |
3db08215 MM |
8952 | remote_insert_breakpoint (struct target_ops *ops, |
8953 | struct gdbarch *gdbarch, | |
a6d9a66e | 8954 | struct bp_target_info *bp_tgt) |
c906108c | 8955 | { |
d471ea57 AC |
8956 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8957 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8958 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8959 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8960 | |
4082afcc | 8961 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8962 | { |
0d5ed153 | 8963 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8964 | struct remote_state *rs; |
bba74b36 | 8965 | char *p, *endbuf; |
7c0f6dcc | 8966 | int bpsize; |
b775012e | 8967 | struct condition_list *cond = NULL; |
4fff2411 | 8968 | |
28439a30 PA |
8969 | /* Make sure the remote is pointing at the right process, if |
8970 | necessary. */ | |
8971 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8972 | set_general_process (); | |
8973 | ||
a1dcb23a | 8974 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8975 | |
8976 | rs = get_remote_state (); | |
8977 | p = rs->buf; | |
bba74b36 | 8978 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8979 | |
96baa820 JM |
8980 | *(p++) = 'Z'; |
8981 | *(p++) = '0'; | |
8982 | *(p++) = ','; | |
7c0f6dcc | 8983 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8984 | p += hexnumstr (p, addr); |
bba74b36 | 8985 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8986 | |
efcc2da7 | 8987 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8988 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8989 | |
78eff0ec | 8990 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8991 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8992 | ||
6d820c5c DJ |
8993 | putpkt (rs->buf); |
8994 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8995 | |
6d820c5c | 8996 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8997 | { |
d471ea57 AC |
8998 | case PACKET_ERROR: |
8999 | return -1; | |
9000 | case PACKET_OK: | |
7c0f6dcc JL |
9001 | bp_tgt->placed_address = addr; |
9002 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9003 | return 0; |
9004 | case PACKET_UNKNOWN: | |
9005 | break; | |
96baa820 JM |
9006 | } |
9007 | } | |
c906108c | 9008 | |
0000e5cc PA |
9009 | /* If this breakpoint has target-side commands but this stub doesn't |
9010 | support Z0 packets, throw error. */ | |
9011 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
9012 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
9013 | Target doesn't support breakpoints that have target side commands.")); | |
9014 | ||
3db08215 | 9015 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9016 | } |
9017 | ||
9018 | static int | |
3db08215 MM |
9019 | remote_remove_breakpoint (struct target_ops *ops, |
9020 | struct gdbarch *gdbarch, | |
a6d9a66e | 9021 | struct bp_target_info *bp_tgt) |
c906108c | 9022 | { |
8181d85f | 9023 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 9024 | struct remote_state *rs = get_remote_state (); |
96baa820 | 9025 | |
4082afcc | 9026 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 9027 | { |
6d820c5c | 9028 | char *p = rs->buf; |
bba74b36 | 9029 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 9030 | |
28439a30 PA |
9031 | /* Make sure the remote is pointing at the right process, if |
9032 | necessary. */ | |
9033 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9034 | set_general_process (); | |
9035 | ||
96baa820 JM |
9036 | *(p++) = 'z'; |
9037 | *(p++) = '0'; | |
9038 | *(p++) = ','; | |
9039 | ||
8181d85f DJ |
9040 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
9041 | p += hexnumstr (p, addr); | |
bba74b36 | 9042 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 9043 | |
6d820c5c DJ |
9044 | putpkt (rs->buf); |
9045 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9046 | |
6d820c5c | 9047 | return (rs->buf[0] == 'E'); |
96baa820 JM |
9048 | } |
9049 | ||
3db08215 | 9050 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
9051 | } |
9052 | ||
f486487f | 9053 | static enum Z_packet_type |
d471ea57 AC |
9054 | watchpoint_to_Z_packet (int type) |
9055 | { | |
9056 | switch (type) | |
9057 | { | |
9058 | case hw_write: | |
bb858e6a | 9059 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
9060 | break; |
9061 | case hw_read: | |
bb858e6a | 9062 | return Z_PACKET_READ_WP; |
d471ea57 AC |
9063 | break; |
9064 | case hw_access: | |
bb858e6a | 9065 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
9066 | break; |
9067 | default: | |
8e65ff28 | 9068 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9069 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
9070 | } |
9071 | } | |
9072 | ||
3c3bea1c | 9073 | static int |
f486487f SM |
9074 | remote_insert_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 | 9080 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 9081 | |
4082afcc | 9082 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 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); |
802188a7 | 9095 | |
6d820c5c DJ |
9096 | putpkt (rs->buf); |
9097 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9098 | |
6d820c5c | 9099 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9100 | { |
9101 | case PACKET_ERROR: | |
d471ea57 | 9102 | return -1; |
85d721b8 PA |
9103 | case PACKET_UNKNOWN: |
9104 | return 1; | |
d471ea57 AC |
9105 | case PACKET_OK: |
9106 | return 0; | |
9107 | } | |
8e65ff28 | 9108 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9109 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
9110 | } |
9111 | ||
283002cf MR |
9112 | static int |
9113 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
9114 | CORE_ADDR start, int length) | |
9115 | { | |
9116 | CORE_ADDR diff = remote_address_masked (addr - start); | |
9117 | ||
9118 | return diff < length; | |
9119 | } | |
9120 | ||
d471ea57 | 9121 | |
3c3bea1c | 9122 | static int |
f486487f SM |
9123 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
9124 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 9125 | { |
d01949b6 | 9126 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 9127 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 9128 | char *p; |
d471ea57 AC |
9129 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
9130 | ||
4082afcc | 9131 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 9132 | return -1; |
802188a7 | 9133 | |
28439a30 PA |
9134 | /* Make sure the remote is pointing at the right process, if |
9135 | necessary. */ | |
9136 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9137 | set_general_process (); | |
9138 | ||
bba74b36 | 9139 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 9140 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
9141 | addr = remote_address_masked (addr); |
9142 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 9143 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
9144 | putpkt (rs->buf); |
9145 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9146 | |
6d820c5c | 9147 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
9148 | { |
9149 | case PACKET_ERROR: | |
9150 | case PACKET_UNKNOWN: | |
9151 | return -1; | |
9152 | case PACKET_OK: | |
9153 | return 0; | |
9154 | } | |
8e65ff28 | 9155 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9156 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
9157 | } |
9158 | ||
3c3bea1c | 9159 | |
501eef12 | 9160 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 9161 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 9162 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 9163 | |
480a3f21 | 9164 | static int |
31568a15 TT |
9165 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
9166 | CORE_ADDR addr, int len) | |
480a3f21 PW |
9167 | { |
9168 | if (remote_hw_watchpoint_length_limit == 0) | |
9169 | return 0; | |
9170 | else if (remote_hw_watchpoint_length_limit < 0) | |
9171 | return 1; | |
9172 | else if (len <= remote_hw_watchpoint_length_limit) | |
9173 | return 1; | |
9174 | else | |
9175 | return 0; | |
9176 | } | |
9177 | ||
b9362cc7 | 9178 | static int |
5461485a | 9179 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 9180 | enum bptype type, int cnt, int ot) |
96baa820 | 9181 | { |
3c3bea1c GS |
9182 | if (type == bp_hardware_breakpoint) |
9183 | { | |
9184 | if (remote_hw_breakpoint_limit == 0) | |
9185 | return 0; | |
501eef12 AC |
9186 | else if (remote_hw_breakpoint_limit < 0) |
9187 | return 1; | |
3c3bea1c GS |
9188 | else if (cnt <= remote_hw_breakpoint_limit) |
9189 | return 1; | |
9190 | } | |
9191 | else | |
9192 | { | |
9193 | if (remote_hw_watchpoint_limit == 0) | |
9194 | return 0; | |
501eef12 AC |
9195 | else if (remote_hw_watchpoint_limit < 0) |
9196 | return 1; | |
3c3bea1c GS |
9197 | else if (ot) |
9198 | return -1; | |
9199 | else if (cnt <= remote_hw_watchpoint_limit) | |
9200 | return 1; | |
9201 | } | |
9202 | return -1; | |
9203 | } | |
9204 | ||
f7e6eed5 PA |
9205 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
9206 | ||
9207 | static int | |
9208 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9209 | { | |
9210 | struct remote_state *rs = get_remote_state (); | |
9211 | ||
9212 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
9213 | } | |
9214 | ||
9215 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
9216 | remote. */ | |
9217 | ||
9218 | static int | |
9219 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
9220 | { | |
9221 | struct remote_state *rs = get_remote_state (); | |
9222 | ||
9223 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
9224 | } | |
9225 | ||
9226 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
9227 | ||
9228 | static int | |
9229 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9230 | { | |
9231 | struct remote_state *rs = get_remote_state (); | |
9232 | ||
9233 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
9234 | } | |
9235 | ||
9236 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
9237 | remote. */ | |
9238 | ||
9239 | static int | |
9240 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
9241 | { | |
9242 | struct remote_state *rs = get_remote_state (); | |
9243 | ||
9244 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
9245 | } | |
9246 | ||
b9362cc7 | 9247 | static int |
6a109b6b | 9248 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 9249 | { |
ee154bee TT |
9250 | struct remote_state *rs = get_remote_state (); |
9251 | ||
f7e6eed5 | 9252 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
9253 | } |
9254 | ||
4aa7a7f5 JJ |
9255 | static int |
9256 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 9257 | { |
ee154bee | 9258 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 9259 | int rc = 0; |
a744cf53 | 9260 | |
6a109b6b | 9261 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 9262 | { |
ee154bee | 9263 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
9264 | rc = 1; |
9265 | } | |
9266 | ||
9267 | return rc; | |
3c3bea1c GS |
9268 | } |
9269 | ||
9270 | ||
9271 | static int | |
23a26771 | 9272 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9273 | struct bp_target_info *bp_tgt) |
3c3bea1c | 9274 | { |
0d5ed153 | 9275 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 9276 | struct remote_state *rs; |
bba74b36 | 9277 | char *p, *endbuf; |
dd61ec5c | 9278 | char *message; |
0d5ed153 | 9279 | int bpsize; |
802188a7 | 9280 | |
c8189ed1 | 9281 | /* The length field should be set to the size of a breakpoint |
8181d85f | 9282 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 9283 | |
0d5ed153 | 9284 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 9285 | |
4082afcc | 9286 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9287 | return -1; |
2bc416ba | 9288 | |
28439a30 PA |
9289 | /* Make sure the remote is pointing at the right process, if |
9290 | necessary. */ | |
9291 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9292 | set_general_process (); | |
9293 | ||
4fff2411 JZ |
9294 | rs = get_remote_state (); |
9295 | p = rs->buf; | |
bba74b36 | 9296 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 9297 | |
96baa820 JM |
9298 | *(p++) = 'Z'; |
9299 | *(p++) = '1'; | |
9300 | *(p++) = ','; | |
802188a7 | 9301 | |
0d5ed153 | 9302 | addr = remote_address_masked (addr); |
96baa820 | 9303 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9304 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9305 | |
efcc2da7 | 9306 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9307 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9308 | |
78eff0ec | 9309 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9310 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9311 | ||
6d820c5c DJ |
9312 | putpkt (rs->buf); |
9313 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9314 | |
6d820c5c | 9315 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9316 | { |
9317 | case PACKET_ERROR: | |
dd61ec5c MW |
9318 | if (rs->buf[1] == '.') |
9319 | { | |
9320 | message = strchr (rs->buf + 2, '.'); | |
9321 | if (message) | |
0316657e | 9322 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9323 | } |
9324 | return -1; | |
d471ea57 AC |
9325 | case PACKET_UNKNOWN: |
9326 | return -1; | |
9327 | case PACKET_OK: | |
0d5ed153 MR |
9328 | bp_tgt->placed_address = addr; |
9329 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9330 | return 0; |
9331 | } | |
8e65ff28 | 9332 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9333 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9334 | } |
9335 | ||
d471ea57 | 9336 | |
802188a7 | 9337 | static int |
a64dc96c | 9338 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9339 | struct bp_target_info *bp_tgt) |
96baa820 | 9340 | { |
8181d85f | 9341 | CORE_ADDR addr; |
d01949b6 | 9342 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9343 | char *p = rs->buf; |
bba74b36 | 9344 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9345 | |
4082afcc | 9346 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9347 | return -1; |
802188a7 | 9348 | |
28439a30 PA |
9349 | /* Make sure the remote is pointing at the right process, if |
9350 | necessary. */ | |
9351 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9352 | set_general_process (); | |
9353 | ||
96baa820 JM |
9354 | *(p++) = 'z'; |
9355 | *(p++) = '1'; | |
9356 | *(p++) = ','; | |
802188a7 | 9357 | |
8181d85f | 9358 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9359 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9360 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9361 | |
6d820c5c DJ |
9362 | putpkt (rs->buf); |
9363 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9364 | |
6d820c5c | 9365 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9366 | { |
9367 | case PACKET_ERROR: | |
9368 | case PACKET_UNKNOWN: | |
9369 | return -1; | |
9370 | case PACKET_OK: | |
9371 | return 0; | |
9372 | } | |
8e65ff28 | 9373 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9374 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9375 | } |
96baa820 | 9376 | |
4a5e7a5b PA |
9377 | /* Verify memory using the "qCRC:" request. */ |
9378 | ||
9379 | static int | |
9380 | remote_verify_memory (struct target_ops *ops, | |
9381 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9382 | { | |
9383 | struct remote_state *rs = get_remote_state (); | |
9384 | unsigned long host_crc, target_crc; | |
9385 | char *tmp; | |
9386 | ||
936d2992 PA |
9387 | /* It doesn't make sense to use qCRC if the remote target is |
9388 | connected but not running. */ | |
9389 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9390 | { | |
9391 | enum packet_result result; | |
28439a30 | 9392 | |
936d2992 PA |
9393 | /* Make sure the remote is pointing at the right process. */ |
9394 | set_general_process (); | |
4a5e7a5b | 9395 | |
936d2992 PA |
9396 | /* FIXME: assumes lma can fit into long. */ |
9397 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9398 | (long) lma, (long) size); | |
9399 | putpkt (rs->buf); | |
4a5e7a5b | 9400 | |
936d2992 PA |
9401 | /* Be clever; compute the host_crc before waiting for target |
9402 | reply. */ | |
9403 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9404 | ||
9405 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9406 | |
936d2992 PA |
9407 | result = packet_ok (rs->buf, |
9408 | &remote_protocol_packets[PACKET_qCRC]); | |
9409 | if (result == PACKET_ERROR) | |
9410 | return -1; | |
9411 | else if (result == PACKET_OK) | |
9412 | { | |
9413 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9414 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9415 | |
936d2992 PA |
9416 | return (host_crc == target_crc); |
9417 | } | |
9418 | } | |
4a5e7a5b | 9419 | |
936d2992 | 9420 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9421 | } |
9422 | ||
c906108c SS |
9423 | /* compare-sections command |
9424 | ||
9425 | With no arguments, compares each loadable section in the exec bfd | |
9426 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9427 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9428 | |
c906108c | 9429 | static void |
fba45db2 | 9430 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9431 | { |
9432 | asection *s; | |
c906108c | 9433 | struct cleanup *old_chain; |
948f8e3d | 9434 | gdb_byte *sectdata; |
ce359b09 | 9435 | const char *sectname; |
c906108c SS |
9436 | bfd_size_type size; |
9437 | bfd_vma lma; | |
9438 | int matched = 0; | |
9439 | int mismatched = 0; | |
4a5e7a5b | 9440 | int res; |
95cf3b38 | 9441 | int read_only = 0; |
c906108c SS |
9442 | |
9443 | if (!exec_bfd) | |
8a3fe4f8 | 9444 | error (_("command cannot be used without an exec file")); |
c906108c | 9445 | |
28439a30 PA |
9446 | /* Make sure the remote is pointing at the right process. */ |
9447 | set_general_process (); | |
9448 | ||
95cf3b38 DT |
9449 | if (args != NULL && strcmp (args, "-r") == 0) |
9450 | { | |
9451 | read_only = 1; | |
9452 | args = NULL; | |
9453 | } | |
9454 | ||
c5aa993b | 9455 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9456 | { |
9457 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9458 | continue; /* Skip non-loadable section. */ |
c906108c | 9459 | |
95cf3b38 DT |
9460 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9461 | continue; /* Skip writeable sections */ | |
9462 | ||
2c500098 | 9463 | size = bfd_get_section_size (s); |
c906108c | 9464 | if (size == 0) |
0df8b418 | 9465 | continue; /* Skip zero-length section. */ |
c906108c | 9466 | |
ce359b09 | 9467 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9468 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9469 | continue; /* Not the section selected by user. */ |
c906108c | 9470 | |
0df8b418 | 9471 | matched = 1; /* Do this section. */ |
c906108c | 9472 | lma = s->lma; |
c906108c | 9473 | |
224c3ddb | 9474 | sectdata = (gdb_byte *) xmalloc (size); |
b8c9b27d | 9475 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9476 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9477 | |
4a5e7a5b PA |
9478 | res = target_verify_memory (sectdata, lma, size); |
9479 | ||
9480 | if (res == -1) | |
5af949e3 | 9481 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9482 | paddress (target_gdbarch (), lma), |
9483 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9484 | |
5af949e3 | 9485 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9486 | paddress (target_gdbarch (), lma), |
9487 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9488 | if (res) |
c906108c SS |
9489 | printf_filtered ("matched.\n"); |
9490 | else | |
c5aa993b JM |
9491 | { |
9492 | printf_filtered ("MIS-MATCHED!\n"); | |
9493 | mismatched++; | |
9494 | } | |
c906108c SS |
9495 | |
9496 | do_cleanups (old_chain); | |
9497 | } | |
9498 | if (mismatched > 0) | |
936d2992 | 9499 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9500 | the loaded file\n")); |
c906108c | 9501 | if (args && !matched) |
a3f17187 | 9502 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9503 | } |
9504 | ||
0e7f50da UW |
9505 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9506 | into remote target. The number of bytes written to the remote | |
9507 | target is returned, or -1 for error. */ | |
9508 | ||
9b409511 | 9509 | static enum target_xfer_status |
0e7f50da UW |
9510 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9511 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9512 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9513 | struct packet_config *packet) |
9514 | { | |
9515 | int i, buf_len; | |
9516 | ULONGEST n; | |
0e7f50da UW |
9517 | struct remote_state *rs = get_remote_state (); |
9518 | int max_size = get_memory_write_packet_size (); | |
9519 | ||
9520 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9521 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9522 | |
9523 | /* Insert header. */ | |
9524 | i = snprintf (rs->buf, max_size, | |
9525 | "qXfer:%s:write:%s:%s:", | |
9526 | object_name, annex ? annex : "", | |
9527 | phex_nz (offset, sizeof offset)); | |
9528 | max_size -= (i + 1); | |
9529 | ||
9530 | /* Escape as much data as fits into rs->buf. */ | |
9531 | buf_len = remote_escape_output | |
124e13d9 | 9532 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9533 | |
9534 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9535 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9536 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9537 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9538 | |
9539 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9540 | |
9541 | *xfered_len = n; | |
9542 | return TARGET_XFER_OK; | |
0e7f50da UW |
9543 | } |
9544 | ||
0876f84a DJ |
9545 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9546 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9547 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9548 | The number of bytes read may be less than LEN without indicating an | |
9549 | EOF. PACKET is checked and updated to indicate whether the remote | |
9550 | target supports this object. */ | |
9551 | ||
9b409511 | 9552 | static enum target_xfer_status |
0876f84a DJ |
9553 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9554 | const char *annex, | |
9555 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9556 | ULONGEST *xfered_len, |
0876f84a DJ |
9557 | struct packet_config *packet) |
9558 | { | |
0876f84a | 9559 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9560 | LONGEST i, n, packet_len; |
9561 | ||
9562 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9563 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9564 | |
9565 | /* Check whether we've cached an end-of-object packet that matches | |
9566 | this request. */ | |
8e88304f | 9567 | if (rs->finished_object) |
0876f84a | 9568 | { |
8e88304f TT |
9569 | if (strcmp (object_name, rs->finished_object) == 0 |
9570 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9571 | && offset == rs->finished_offset) | |
9b409511 YQ |
9572 | return TARGET_XFER_EOF; |
9573 | ||
0876f84a DJ |
9574 | |
9575 | /* Otherwise, we're now reading something different. Discard | |
9576 | the cache. */ | |
8e88304f TT |
9577 | xfree (rs->finished_object); |
9578 | xfree (rs->finished_annex); | |
9579 | rs->finished_object = NULL; | |
9580 | rs->finished_annex = NULL; | |
0876f84a DJ |
9581 | } |
9582 | ||
9583 | /* Request only enough to fit in a single packet. The actual data | |
9584 | may not, since we don't know how much of it will need to be escaped; | |
9585 | the target is free to respond with slightly less data. We subtract | |
9586 | five to account for the response type and the protocol frame. */ | |
9587 | n = min (get_remote_packet_size () - 5, len); | |
9588 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9589 | object_name, annex ? annex : "", | |
9590 | phex_nz (offset, sizeof offset), | |
9591 | phex_nz (n, sizeof n)); | |
9592 | i = putpkt (rs->buf); | |
9593 | if (i < 0) | |
2ed4b548 | 9594 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9595 | |
9596 | rs->buf[0] = '\0'; | |
9597 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9598 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9599 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9600 | |
9601 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9602 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9603 | ||
9604 | /* 'm' means there is (or at least might be) more data after this | |
9605 | batch. That does not make sense unless there's at least one byte | |
9606 | of data in this reply. */ | |
9607 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9608 | error (_("Remote qXfer reply contained no data.")); | |
9609 | ||
9610 | /* Got some data. */ | |
bc20a4af PA |
9611 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9612 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9613 | |
9614 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9615 | or possibly empty. If we have the final block of a non-empty |
9616 | object, record this fact to bypass a subsequent partial read. */ | |
9617 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9618 | { |
8e88304f TT |
9619 | rs->finished_object = xstrdup (object_name); |
9620 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9621 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9622 | } |
9623 | ||
9b409511 YQ |
9624 | if (i == 0) |
9625 | return TARGET_XFER_EOF; | |
9626 | else | |
9627 | { | |
9628 | *xfered_len = i; | |
9629 | return TARGET_XFER_OK; | |
9630 | } | |
0876f84a DJ |
9631 | } |
9632 | ||
9b409511 | 9633 | static enum target_xfer_status |
4b8a223f | 9634 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9635 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9636 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9637 | ULONGEST *xfered_len) | |
c906108c | 9638 | { |
82f73884 | 9639 | struct remote_state *rs; |
c906108c | 9640 | int i; |
6d820c5c | 9641 | char *p2; |
1e3ff5ad | 9642 | char query_type; |
124e13d9 | 9643 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9644 | |
e6e4e701 | 9645 | set_remote_traceframe (); |
82f73884 PA |
9646 | set_general_thread (inferior_ptid); |
9647 | ||
9648 | rs = get_remote_state (); | |
9649 | ||
b2182ed2 | 9650 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9651 | if (object == TARGET_OBJECT_MEMORY) |
9652 | { | |
2d717e4f DJ |
9653 | /* If the remote target is connected but not running, we should |
9654 | pass this request down to a lower stratum (e.g. the executable | |
9655 | file). */ | |
9656 | if (!target_has_execution) | |
9b409511 | 9657 | return TARGET_XFER_EOF; |
2d717e4f | 9658 | |
21e3b9b9 | 9659 | if (writebuf != NULL) |
124e13d9 SM |
9660 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9661 | xfered_len); | |
21e3b9b9 | 9662 | else |
124e13d9 SM |
9663 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9664 | xfered_len); | |
21e3b9b9 DJ |
9665 | } |
9666 | ||
0df8b418 | 9667 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9668 | if (object == TARGET_OBJECT_SPU) |
9669 | { | |
9670 | if (readbuf) | |
9671 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9672 | xfered_len, &remote_protocol_packets |
9673 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9674 | else |
9675 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9676 | xfered_len, &remote_protocol_packets |
9677 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9678 | } |
9679 | ||
4aa995e1 PA |
9680 | /* Handle extra signal info using qxfer packets. */ |
9681 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9682 | { | |
9683 | if (readbuf) | |
9684 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9685 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9686 | [PACKET_qXfer_siginfo_read]); |
9687 | else | |
3e43a32a | 9688 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9689 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9690 | &remote_protocol_packets |
9691 | [PACKET_qXfer_siginfo_write]); | |
9692 | } | |
9693 | ||
0fb4aa4b PA |
9694 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9695 | { | |
9696 | if (readbuf) | |
3e43a32a | 9697 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9698 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9699 | &remote_protocol_packets |
9700 | [PACKET_qXfer_statictrace_read]); | |
9701 | else | |
2ed4b548 | 9702 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9703 | } |
9704 | ||
a76d924d DJ |
9705 | /* Only handle flash writes. */ |
9706 | if (writebuf != NULL) | |
9707 | { | |
9708 | LONGEST xfered; | |
9709 | ||
9710 | switch (object) | |
9711 | { | |
9712 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9713 | return remote_flash_write (ops, offset, len, xfered_len, |
9714 | writebuf); | |
a76d924d DJ |
9715 | |
9716 | default: | |
2ed4b548 | 9717 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9718 | } |
9719 | } | |
4b8a223f | 9720 | |
1e3ff5ad AC |
9721 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9722 | objects!!! Instead specify new query packets. */ | |
9723 | switch (object) | |
c906108c | 9724 | { |
1e3ff5ad AC |
9725 | case TARGET_OBJECT_AVR: |
9726 | query_type = 'R'; | |
9727 | break; | |
802188a7 RM |
9728 | |
9729 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9730 | gdb_assert (annex == NULL); |
9731 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9732 | xfered_len, |
0876f84a | 9733 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9734 | |
23181151 DJ |
9735 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9736 | return remote_read_qxfer | |
9b409511 | 9737 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9738 | &remote_protocol_packets[PACKET_qXfer_features]); |
9739 | ||
cfa9d6d9 DJ |
9740 | case TARGET_OBJECT_LIBRARIES: |
9741 | return remote_read_qxfer | |
9b409511 | 9742 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9743 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9744 | ||
2268b414 JK |
9745 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9746 | return remote_read_qxfer | |
9b409511 | 9747 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9748 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9749 | ||
fd79ecee DJ |
9750 | case TARGET_OBJECT_MEMORY_MAP: |
9751 | gdb_assert (annex == NULL); | |
9752 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9753 | xfered_len, |
fd79ecee DJ |
9754 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9755 | ||
07e059b5 VP |
9756 | case TARGET_OBJECT_OSDATA: |
9757 | /* Should only get here if we're connected. */ | |
5d93a237 | 9758 | gdb_assert (rs->remote_desc); |
07e059b5 | 9759 | return remote_read_qxfer |
9b409511 | 9760 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9761 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9762 | ||
dc146f7c VP |
9763 | case TARGET_OBJECT_THREADS: |
9764 | gdb_assert (annex == NULL); | |
9765 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9766 | xfered_len, |
dc146f7c VP |
9767 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9768 | ||
b3b9301e PA |
9769 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9770 | gdb_assert (annex == NULL); | |
9771 | return remote_read_qxfer | |
9b409511 | 9772 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9773 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9774 | |
9775 | case TARGET_OBJECT_FDPIC: | |
9776 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9777 | xfered_len, |
78d85199 | 9778 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9779 | |
9780 | case TARGET_OBJECT_OPENVMS_UIB: | |
9781 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9782 | xfered_len, |
169081d0 TG |
9783 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9784 | ||
9accd112 MM |
9785 | case TARGET_OBJECT_BTRACE: |
9786 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9787 | xfered_len, |
9accd112 MM |
9788 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9789 | ||
f4abbc16 MM |
9790 | case TARGET_OBJECT_BTRACE_CONF: |
9791 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9792 | len, xfered_len, | |
9793 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9794 | ||
c78fa86a GB |
9795 | case TARGET_OBJECT_EXEC_FILE: |
9796 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9797 | len, xfered_len, | |
9798 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9799 | ||
1e3ff5ad | 9800 | default: |
2ed4b548 | 9801 | return TARGET_XFER_E_IO; |
c906108c SS |
9802 | } |
9803 | ||
0df8b418 | 9804 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9805 | large enough let the caller deal with it. */ |
ea9c271d | 9806 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9807 | return TARGET_XFER_E_IO; |
ea9c271d | 9808 | len = get_remote_packet_size (); |
1e3ff5ad | 9809 | |
23860348 | 9810 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9811 | if (!rs->remote_desc) |
8a3fe4f8 | 9812 | error (_("remote query is only available after target open")); |
c906108c | 9813 | |
1e3ff5ad | 9814 | gdb_assert (annex != NULL); |
4b8a223f | 9815 | gdb_assert (readbuf != NULL); |
c906108c | 9816 | |
6d820c5c | 9817 | p2 = rs->buf; |
c906108c SS |
9818 | *p2++ = 'q'; |
9819 | *p2++ = query_type; | |
9820 | ||
23860348 MS |
9821 | /* We used one buffer char for the remote protocol q command and |
9822 | another for the query type. As the remote protocol encapsulation | |
9823 | uses 4 chars plus one extra in case we are debugging | |
9824 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9825 | string. */ | |
c906108c | 9826 | i = 0; |
ea9c271d | 9827 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9828 | { |
1e3ff5ad AC |
9829 | /* Bad caller may have sent forbidden characters. */ |
9830 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9831 | *p2++ = annex[i]; | |
c906108c SS |
9832 | i++; |
9833 | } | |
1e3ff5ad AC |
9834 | *p2 = '\0'; |
9835 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9836 | |
6d820c5c | 9837 | i = putpkt (rs->buf); |
c5aa993b | 9838 | if (i < 0) |
2ed4b548 | 9839 | return TARGET_XFER_E_IO; |
c906108c | 9840 | |
6d820c5c DJ |
9841 | getpkt (&rs->buf, &rs->buf_size, 0); |
9842 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9843 | |
9b409511 YQ |
9844 | *xfered_len = strlen ((char *) readbuf); |
9845 | return TARGET_XFER_OK; | |
c906108c SS |
9846 | } |
9847 | ||
08388c79 DE |
9848 | static int |
9849 | remote_search_memory (struct target_ops* ops, | |
9850 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9851 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9852 | CORE_ADDR *found_addrp) | |
9853 | { | |
f5656ead | 9854 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9855 | struct remote_state *rs = get_remote_state (); |
9856 | int max_size = get_memory_write_packet_size (); | |
9857 | struct packet_config *packet = | |
9858 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9859 | /* Number of packet bytes used to encode the pattern; |
9860 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9861 | int escaped_pattern_len; |
0df8b418 | 9862 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9863 | int used_pattern_len; |
9864 | int i; | |
9865 | int found; | |
9866 | ULONGEST found_addr; | |
9867 | ||
9868 | /* Don't go to the target if we don't have to. | |
9869 | This is done before checking packet->support to avoid the possibility that | |
9870 | a success for this edge case means the facility works in general. */ | |
9871 | if (pattern_len > search_space_len) | |
9872 | return 0; | |
9873 | if (pattern_len == 0) | |
9874 | { | |
9875 | *found_addrp = start_addr; | |
9876 | return 1; | |
9877 | } | |
9878 | ||
9879 | /* If we already know the packet isn't supported, fall back to the simple | |
9880 | way of searching memory. */ | |
9881 | ||
4082afcc | 9882 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9883 | { |
9884 | /* Target doesn't provided special support, fall back and use the | |
9885 | standard support (copy memory and do the search here). */ | |
9886 | return simple_search_memory (ops, start_addr, search_space_len, | |
9887 | pattern, pattern_len, found_addrp); | |
9888 | } | |
9889 | ||
28439a30 PA |
9890 | /* Make sure the remote is pointing at the right process. */ |
9891 | set_general_process (); | |
9892 | ||
08388c79 DE |
9893 | /* Insert header. */ |
9894 | i = snprintf (rs->buf, max_size, | |
9895 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9896 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9897 | phex_nz (search_space_len, sizeof (search_space_len))); |
9898 | max_size -= (i + 1); | |
9899 | ||
9900 | /* Escape as much data as fits into rs->buf. */ | |
9901 | escaped_pattern_len = | |
124e13d9 | 9902 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9903 | &used_pattern_len, max_size); |
9904 | ||
9905 | /* Bail if the pattern is too large. */ | |
9906 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9907 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9908 | |
9909 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9910 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9911 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9912 | { | |
9913 | /* The request may not have worked because the command is not | |
9914 | supported. If so, fall back to the simple way. */ | |
9915 | if (packet->support == PACKET_DISABLE) | |
9916 | { | |
9917 | return simple_search_memory (ops, start_addr, search_space_len, | |
9918 | pattern, pattern_len, found_addrp); | |
9919 | } | |
9920 | return -1; | |
9921 | } | |
9922 | ||
9923 | if (rs->buf[0] == '0') | |
9924 | found = 0; | |
9925 | else if (rs->buf[0] == '1') | |
9926 | { | |
9927 | found = 1; | |
9928 | if (rs->buf[1] != ',') | |
10e0fa18 | 9929 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9930 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9931 | *found_addrp = found_addr; | |
9932 | } | |
9933 | else | |
10e0fa18 | 9934 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9935 | |
9936 | return found; | |
9937 | } | |
9938 | ||
96baa820 | 9939 | static void |
a30bf1f1 | 9940 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9941 | struct ui_file *outbuf) |
96baa820 | 9942 | { |
d01949b6 | 9943 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9944 | char *p = rs->buf; |
96baa820 | 9945 | |
5d93a237 | 9946 | if (!rs->remote_desc) |
8a3fe4f8 | 9947 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9948 | |
23860348 | 9949 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9950 | if (command == NULL) |
9951 | command = ""; | |
9952 | ||
23860348 | 9953 | /* The query prefix. */ |
2e9f7625 DJ |
9954 | strcpy (rs->buf, "qRcmd,"); |
9955 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9956 | |
3e43a32a MS |
9957 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9958 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9959 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9960 | |
23860348 | 9961 | /* Encode the actual command. */ |
a30bf1f1 | 9962 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9963 | |
6d820c5c | 9964 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9965 | error (_("Communication problem with target.")); |
96baa820 JM |
9966 | |
9967 | /* get/display the response */ | |
9968 | while (1) | |
9969 | { | |
2e9f7625 DJ |
9970 | char *buf; |
9971 | ||
00bf0b85 | 9972 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9973 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9974 | rs->buf[0] = '\0'; |
5b37825d PW |
9975 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9976 | { | |
9977 | /* Timeout. Continue to (try to) read responses. | |
9978 | This is better than stopping with an error, assuming the stub | |
9979 | is still executing the (long) monitor command. | |
9980 | If needed, the user can interrupt gdb using C-c, obtaining | |
9981 | an effect similar to stop on timeout. */ | |
9982 | continue; | |
9983 | } | |
2e9f7625 | 9984 | buf = rs->buf; |
96baa820 | 9985 | if (buf[0] == '\0') |
8a3fe4f8 | 9986 | error (_("Target does not support this command.")); |
96baa820 JM |
9987 | if (buf[0] == 'O' && buf[1] != 'K') |
9988 | { | |
23860348 | 9989 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9990 | continue; |
9991 | } | |
9992 | if (strcmp (buf, "OK") == 0) | |
9993 | break; | |
7be570e7 JM |
9994 | if (strlen (buf) == 3 && buf[0] == 'E' |
9995 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9996 | { | |
8a3fe4f8 | 9997 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9998 | } |
96baa820 JM |
9999 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
10000 | { | |
10001 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 10002 | |
96baa820 JM |
10003 | fputc_unfiltered (c, outbuf); |
10004 | } | |
10005 | break; | |
10006 | } | |
10007 | } | |
10008 | ||
fd79ecee DJ |
10009 | static VEC(mem_region_s) * |
10010 | remote_memory_map (struct target_ops *ops) | |
10011 | { | |
10012 | VEC(mem_region_s) *result = NULL; | |
10013 | char *text = target_read_stralloc (¤t_target, | |
10014 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
10015 | ||
10016 | if (text) | |
10017 | { | |
10018 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 10019 | |
fd79ecee DJ |
10020 | result = parse_memory_map (text); |
10021 | do_cleanups (back_to); | |
10022 | } | |
10023 | ||
10024 | return result; | |
10025 | } | |
10026 | ||
c906108c | 10027 | static void |
fba45db2 | 10028 | packet_command (char *args, int from_tty) |
c906108c | 10029 | { |
d01949b6 | 10030 | struct remote_state *rs = get_remote_state (); |
c906108c | 10031 | |
5d93a237 | 10032 | if (!rs->remote_desc) |
8a3fe4f8 | 10033 | error (_("command can only be used with remote target")); |
c906108c | 10034 | |
c5aa993b | 10035 | if (!args) |
8a3fe4f8 | 10036 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
10037 | |
10038 | puts_filtered ("sending: "); | |
10039 | print_packet (args); | |
10040 | puts_filtered ("\n"); | |
10041 | putpkt (args); | |
10042 | ||
6d820c5c | 10043 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 10044 | puts_filtered ("received: "); |
6d820c5c | 10045 | print_packet (rs->buf); |
c906108c SS |
10046 | puts_filtered ("\n"); |
10047 | } | |
10048 | ||
10049 | #if 0 | |
23860348 | 10050 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 10051 | |
a14ed312 | 10052 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 10053 | |
a14ed312 | 10054 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 10055 | |
a14ed312 | 10056 | static void threadalive_test (char *cmd, int tty); |
c906108c | 10057 | |
a14ed312 | 10058 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 10059 | |
23860348 | 10060 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 10061 | |
a14ed312 | 10062 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 10063 | |
23860348 | 10064 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 10065 | |
a14ed312 | 10066 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 10067 | |
a14ed312 | 10068 | static void init_remote_threadtests (void); |
c906108c | 10069 | |
23860348 | 10070 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
10071 | |
10072 | static void | |
fba45db2 | 10073 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
10074 | { |
10075 | int sample_thread = SAMPLE_THREAD; | |
10076 | ||
a3f17187 | 10077 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 10078 | set_general_thread (sample_thread); |
c906108c SS |
10079 | } |
10080 | ||
10081 | ||
10082 | static void | |
fba45db2 | 10083 | threadalive_test (char *cmd, int tty) |
c906108c SS |
10084 | { |
10085 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 10086 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 10087 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 10088 | |
79d7f229 | 10089 | if (remote_thread_alive (ptid)) |
c906108c SS |
10090 | printf_filtered ("PASS: Thread alive test\n"); |
10091 | else | |
10092 | printf_filtered ("FAIL: Thread alive test\n"); | |
10093 | } | |
10094 | ||
23860348 | 10095 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
10096 | |
10097 | void | |
fba45db2 | 10098 | output_threadid (char *title, threadref *ref) |
c906108c SS |
10099 | { |
10100 | char hexid[20]; | |
10101 | ||
23860348 | 10102 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
10103 | hexid[16] = 0; |
10104 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
10105 | } | |
10106 | ||
10107 | static void | |
fba45db2 | 10108 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
10109 | { |
10110 | int startflag = 1; | |
10111 | threadref nextthread; | |
10112 | int done, result_count; | |
10113 | threadref threadlist[3]; | |
10114 | ||
10115 | printf_filtered ("Remote Threadlist test\n"); | |
10116 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
10117 | &result_count, &threadlist[0])) | |
10118 | printf_filtered ("FAIL: threadlist test\n"); | |
10119 | else | |
10120 | { | |
10121 | threadref *scan = threadlist; | |
10122 | threadref *limit = scan + result_count; | |
10123 | ||
10124 | while (scan < limit) | |
10125 | output_threadid (" thread ", scan++); | |
10126 | } | |
10127 | } | |
10128 | ||
10129 | void | |
fba45db2 | 10130 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
10131 | { |
10132 | output_threadid ("Threadid: ", &info->threadid); | |
10133 | printf_filtered ("Name: %s\n ", info->shortname); | |
10134 | printf_filtered ("State: %s\n", info->display); | |
10135 | printf_filtered ("other: %s\n\n", info->more_display); | |
10136 | } | |
10137 | ||
10138 | int | |
fba45db2 | 10139 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
10140 | { |
10141 | int result; | |
10142 | int set; | |
10143 | struct gdb_ext_thread_info threadinfo; | |
10144 | ||
10145 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
10146 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
10147 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
10148 | display_thread_info (&threadinfo); | |
10149 | return result; | |
10150 | } | |
10151 | ||
10152 | static void | |
fba45db2 | 10153 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
10154 | { |
10155 | int athread = SAMPLE_THREAD; | |
10156 | threadref thread; | |
10157 | int set; | |
10158 | ||
10159 | int_to_threadref (&thread, athread); | |
10160 | printf_filtered ("Remote Threadinfo test\n"); | |
10161 | if (!get_and_display_threadinfo (&thread)) | |
10162 | printf_filtered ("FAIL cannot get thread info\n"); | |
10163 | } | |
10164 | ||
10165 | static int | |
fba45db2 | 10166 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
10167 | { |
10168 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
10169 | return get_and_display_threadinfo (ref); | |
10170 | } | |
10171 | ||
10172 | static void | |
fba45db2 | 10173 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
10174 | { |
10175 | printf_filtered ("Remote Threadlist update test\n"); | |
10176 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
10177 | } | |
10178 | ||
10179 | static void | |
10180 | init_remote_threadtests (void) | |
10181 | { | |
3e43a32a MS |
10182 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
10183 | _("Fetch and print the remote list of " | |
10184 | "thread identifiers, one pkt only")); | |
c906108c | 10185 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 10186 | _("Fetch and display info about one thread")); |
c906108c | 10187 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 10188 | _("Test setting to a different thread")); |
c906108c | 10189 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 10190 | _("Iterate through updating all remote thread info")); |
c906108c | 10191 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 10192 | _(" Remote thread alive test ")); |
c906108c SS |
10193 | } |
10194 | ||
10195 | #endif /* 0 */ | |
10196 | ||
f3fb8c85 MS |
10197 | /* Convert a thread ID to a string. Returns the string in a static |
10198 | buffer. */ | |
10199 | ||
10200 | static char * | |
117de6a9 | 10201 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 10202 | { |
79d7f229 | 10203 | static char buf[64]; |
82f73884 | 10204 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 10205 | |
7cee1e54 PA |
10206 | if (ptid_equal (ptid, null_ptid)) |
10207 | return normal_pid_to_str (ptid); | |
10208 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
10209 | { |
10210 | /* Printing an inferior target id. */ | |
10211 | ||
10212 | /* When multi-process extensions are off, there's no way in the | |
10213 | remote protocol to know the remote process id, if there's any | |
10214 | at all. There's one exception --- when we're connected with | |
10215 | target extended-remote, and we manually attached to a process | |
10216 | with "attach PID". We don't record anywhere a flag that | |
10217 | allows us to distinguish that case from the case of | |
10218 | connecting with extended-remote and the stub already being | |
10219 | attached to a process, and reporting yes to qAttached, hence | |
10220 | no smart special casing here. */ | |
10221 | if (!remote_multi_process_p (rs)) | |
10222 | { | |
10223 | xsnprintf (buf, sizeof buf, "Remote target"); | |
10224 | return buf; | |
10225 | } | |
10226 | ||
10227 | return normal_pid_to_str (ptid); | |
82f73884 | 10228 | } |
ecd0ada5 | 10229 | else |
79d7f229 | 10230 | { |
ecd0ada5 PA |
10231 | if (ptid_equal (magic_null_ptid, ptid)) |
10232 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 10233 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
10234 | if (ptid_get_lwp (ptid) == 0) |
10235 | return normal_pid_to_str (ptid); | |
10236 | else | |
10237 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
10238 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
10239 | else |
10240 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 10241 | ptid_get_lwp (ptid)); |
79d7f229 PA |
10242 | return buf; |
10243 | } | |
f3fb8c85 MS |
10244 | } |
10245 | ||
38691318 KB |
10246 | /* Get the address of the thread local variable in OBJFILE which is |
10247 | stored at OFFSET within the thread local storage for thread PTID. */ | |
10248 | ||
10249 | static CORE_ADDR | |
117de6a9 PA |
10250 | remote_get_thread_local_address (struct target_ops *ops, |
10251 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 10252 | { |
4082afcc | 10253 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
10254 | { |
10255 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 10256 | char *p = rs->buf; |
82f73884 | 10257 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 10258 | enum packet_result result; |
38691318 KB |
10259 | |
10260 | strcpy (p, "qGetTLSAddr:"); | |
10261 | p += strlen (p); | |
82f73884 | 10262 | p = write_ptid (p, endp, ptid); |
38691318 KB |
10263 | *p++ = ','; |
10264 | p += hexnumstr (p, offset); | |
10265 | *p++ = ','; | |
10266 | p += hexnumstr (p, lm); | |
10267 | *p++ = '\0'; | |
10268 | ||
6d820c5c DJ |
10269 | putpkt (rs->buf); |
10270 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
10271 | result = packet_ok (rs->buf, |
10272 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 10273 | if (result == PACKET_OK) |
38691318 KB |
10274 | { |
10275 | ULONGEST result; | |
10276 | ||
6d820c5c | 10277 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
10278 | return result; |
10279 | } | |
571dd617 | 10280 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
10281 | throw_error (TLS_GENERIC_ERROR, |
10282 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 10283 | else |
109c3e39 AC |
10284 | throw_error (TLS_GENERIC_ERROR, |
10285 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
10286 | } |
10287 | else | |
109c3e39 AC |
10288 | throw_error (TLS_GENERIC_ERROR, |
10289 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
10290 | /* Not reached. */ |
10291 | return 0; | |
10292 | } | |
10293 | ||
711e434b PM |
10294 | /* Provide thread local base, i.e. Thread Information Block address. |
10295 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
10296 | ||
70221824 | 10297 | static int |
bd7ae0f5 | 10298 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10299 | { |
4082afcc | 10300 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10301 | { |
10302 | struct remote_state *rs = get_remote_state (); | |
10303 | char *p = rs->buf; | |
10304 | char *endp = rs->buf + get_remote_packet_size (); | |
10305 | enum packet_result result; | |
10306 | ||
10307 | strcpy (p, "qGetTIBAddr:"); | |
10308 | p += strlen (p); | |
10309 | p = write_ptid (p, endp, ptid); | |
10310 | *p++ = '\0'; | |
10311 | ||
10312 | putpkt (rs->buf); | |
10313 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10314 | result = packet_ok (rs->buf, | |
10315 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10316 | if (result == PACKET_OK) | |
10317 | { | |
10318 | ULONGEST result; | |
10319 | ||
10320 | unpack_varlen_hex (rs->buf, &result); | |
10321 | if (addr) | |
10322 | *addr = (CORE_ADDR) result; | |
10323 | return 1; | |
10324 | } | |
10325 | else if (result == PACKET_UNKNOWN) | |
10326 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10327 | else | |
10328 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10329 | } | |
10330 | else | |
10331 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10332 | /* Not reached. */ | |
10333 | return 0; | |
10334 | } | |
10335 | ||
29709017 DJ |
10336 | /* Support for inferring a target description based on the current |
10337 | architecture and the size of a 'g' packet. While the 'g' packet | |
10338 | can have any size (since optional registers can be left off the | |
10339 | end), some sizes are easily recognizable given knowledge of the | |
10340 | approximate architecture. */ | |
10341 | ||
10342 | struct remote_g_packet_guess | |
10343 | { | |
10344 | int bytes; | |
10345 | const struct target_desc *tdesc; | |
10346 | }; | |
10347 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10348 | DEF_VEC_O(remote_g_packet_guess_s); | |
10349 | ||
10350 | struct remote_g_packet_data | |
10351 | { | |
10352 | VEC(remote_g_packet_guess_s) *guesses; | |
10353 | }; | |
10354 | ||
10355 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10356 | ||
10357 | static void * | |
10358 | remote_g_packet_data_init (struct obstack *obstack) | |
10359 | { | |
10360 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10361 | } | |
10362 | ||
10363 | void | |
10364 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10365 | const struct target_desc *tdesc) | |
10366 | { | |
10367 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10368 | = ((struct remote_g_packet_data *) |
10369 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
10370 | struct remote_g_packet_guess new_guess, *guess; |
10371 | int ix; | |
10372 | ||
10373 | gdb_assert (tdesc != NULL); | |
10374 | ||
10375 | for (ix = 0; | |
10376 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10377 | ix++) | |
10378 | if (guess->bytes == bytes) | |
10379 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10380 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10381 | bytes); |
10382 | ||
10383 | new_guess.bytes = bytes; | |
10384 | new_guess.tdesc = tdesc; | |
10385 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10386 | } | |
10387 | ||
d962ef82 DJ |
10388 | /* Return 1 if remote_read_description would do anything on this target |
10389 | and architecture, 0 otherwise. */ | |
10390 | ||
10391 | static int | |
10392 | remote_read_description_p (struct target_ops *target) | |
10393 | { | |
10394 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10395 | = ((struct remote_g_packet_data *) |
10396 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 DJ |
10397 | |
10398 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10399 | return 1; | |
10400 | ||
10401 | return 0; | |
10402 | } | |
10403 | ||
29709017 DJ |
10404 | static const struct target_desc * |
10405 | remote_read_description (struct target_ops *target) | |
10406 | { | |
10407 | struct remote_g_packet_data *data | |
19ba03f4 SM |
10408 | = ((struct remote_g_packet_data *) |
10409 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 10410 | |
d962ef82 DJ |
10411 | /* Do not try this during initial connection, when we do not know |
10412 | whether there is a running but stopped thread. */ | |
10413 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10414 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10415 | |
29709017 DJ |
10416 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10417 | { | |
10418 | struct remote_g_packet_guess *guess; | |
10419 | int ix; | |
10420 | int bytes = send_g_packet (); | |
10421 | ||
10422 | for (ix = 0; | |
10423 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10424 | ix++) | |
10425 | if (guess->bytes == bytes) | |
10426 | return guess->tdesc; | |
10427 | ||
10428 | /* We discard the g packet. A minor optimization would be to | |
10429 | hold on to it, and fill the register cache once we have selected | |
10430 | an architecture, but it's too tricky to do safely. */ | |
10431 | } | |
10432 | ||
2117c711 | 10433 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10434 | } |
10435 | ||
a6b151f1 DJ |
10436 | /* Remote file transfer support. This is host-initiated I/O, not |
10437 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10438 | ||
10439 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10440 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10441 | decrease *LEFT. Otherwise raise an error. */ | |
10442 | ||
10443 | static void | |
10444 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10445 | { | |
10446 | int len = strlen (string); | |
10447 | ||
10448 | if (len > *left) | |
10449 | error (_("Packet too long for target.")); | |
10450 | ||
10451 | memcpy (*buffer, string, len); | |
10452 | *buffer += len; | |
10453 | *left -= len; | |
10454 | ||
10455 | /* NUL-terminate the buffer as a convenience, if there is | |
10456 | room. */ | |
10457 | if (*left) | |
10458 | **buffer = '\0'; | |
10459 | } | |
10460 | ||
10461 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10462 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10463 | decrease *LEFT. Otherwise raise an error. */ | |
10464 | ||
10465 | static void | |
10466 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10467 | int len) | |
10468 | { | |
10469 | if (2 * len > *left) | |
10470 | error (_("Packet too long for target.")); | |
10471 | ||
10472 | bin2hex (bytes, *buffer, len); | |
10473 | *buffer += 2 * len; | |
10474 | *left -= 2 * len; | |
10475 | ||
10476 | /* NUL-terminate the buffer as a convenience, if there is | |
10477 | room. */ | |
10478 | if (*left) | |
10479 | **buffer = '\0'; | |
10480 | } | |
10481 | ||
10482 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10483 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10484 | decrease *LEFT. Otherwise raise an error. */ | |
10485 | ||
10486 | static void | |
10487 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10488 | { | |
10489 | int len = hexnumlen (value); | |
10490 | ||
10491 | if (len > *left) | |
10492 | error (_("Packet too long for target.")); | |
10493 | ||
10494 | hexnumstr (*buffer, value); | |
10495 | *buffer += len; | |
10496 | *left -= len; | |
10497 | ||
10498 | /* NUL-terminate the buffer as a convenience, if there is | |
10499 | room. */ | |
10500 | if (*left) | |
10501 | **buffer = '\0'; | |
10502 | } | |
10503 | ||
10504 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10505 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10506 | was included, and *ATTACHMENT to point to the start of the annex | |
10507 | if any. The length of the packet isn't needed here; there may | |
10508 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10509 | ||
10510 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10511 | -1 is returned, the other variables may not be initialized. */ | |
10512 | ||
10513 | static int | |
10514 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10515 | int *remote_errno, char **attachment) | |
10516 | { | |
10517 | char *p, *p2; | |
10518 | ||
10519 | *remote_errno = 0; | |
10520 | *attachment = NULL; | |
10521 | ||
10522 | if (buffer[0] != 'F') | |
10523 | return -1; | |
10524 | ||
10525 | errno = 0; | |
10526 | *retcode = strtol (&buffer[1], &p, 16); | |
10527 | if (errno != 0 || p == &buffer[1]) | |
10528 | return -1; | |
10529 | ||
10530 | /* Check for ",errno". */ | |
10531 | if (*p == ',') | |
10532 | { | |
10533 | errno = 0; | |
10534 | *remote_errno = strtol (p + 1, &p2, 16); | |
10535 | if (errno != 0 || p + 1 == p2) | |
10536 | return -1; | |
10537 | p = p2; | |
10538 | } | |
10539 | ||
10540 | /* Check for ";attachment". If there is no attachment, the | |
10541 | packet should end here. */ | |
10542 | if (*p == ';') | |
10543 | { | |
10544 | *attachment = p + 1; | |
10545 | return 0; | |
10546 | } | |
10547 | else if (*p == '\0') | |
10548 | return 0; | |
10549 | else | |
10550 | return -1; | |
10551 | } | |
10552 | ||
10553 | /* Send a prepared I/O packet to the target and read its response. | |
10554 | The prepared packet is in the global RS->BUF before this function | |
10555 | is called, and the answer is there when we return. | |
10556 | ||
10557 | COMMAND_BYTES is the length of the request to send, which may include | |
10558 | binary data. WHICH_PACKET is the packet configuration to check | |
10559 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10560 | is set to the error number and -1 is returned. Otherwise the value | |
10561 | returned by the function is returned. | |
10562 | ||
10563 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10564 | attachment is expected; an error will be reported if there's a | |
10565 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10566 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10567 | attachment's length. */ | |
10568 | ||
10569 | static int | |
10570 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10571 | int *remote_errno, char **attachment, | |
10572 | int *attachment_len) | |
10573 | { | |
10574 | struct remote_state *rs = get_remote_state (); | |
10575 | int ret, bytes_read; | |
10576 | char *attachment_tmp; | |
10577 | ||
5d93a237 | 10578 | if (!rs->remote_desc |
4082afcc | 10579 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10580 | { |
10581 | *remote_errno = FILEIO_ENOSYS; | |
10582 | return -1; | |
10583 | } | |
10584 | ||
10585 | putpkt_binary (rs->buf, command_bytes); | |
10586 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10587 | ||
10588 | /* If it timed out, something is wrong. Don't try to parse the | |
10589 | buffer. */ | |
10590 | if (bytes_read < 0) | |
10591 | { | |
10592 | *remote_errno = FILEIO_EINVAL; | |
10593 | return -1; | |
10594 | } | |
10595 | ||
10596 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10597 | { | |
10598 | case PACKET_ERROR: | |
10599 | *remote_errno = FILEIO_EINVAL; | |
10600 | return -1; | |
10601 | case PACKET_UNKNOWN: | |
10602 | *remote_errno = FILEIO_ENOSYS; | |
10603 | return -1; | |
10604 | case PACKET_OK: | |
10605 | break; | |
10606 | } | |
10607 | ||
10608 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10609 | &attachment_tmp)) | |
10610 | { | |
10611 | *remote_errno = FILEIO_EINVAL; | |
10612 | return -1; | |
10613 | } | |
10614 | ||
10615 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10616 | if ((attachment_tmp == NULL && attachment != NULL) | |
10617 | || (attachment_tmp != NULL && attachment == NULL)) | |
10618 | { | |
10619 | *remote_errno = FILEIO_EINVAL; | |
10620 | return -1; | |
10621 | } | |
10622 | ||
10623 | /* If an attachment was found, it must point into the packet buffer; | |
10624 | work out how many bytes there were. */ | |
10625 | if (attachment_tmp != NULL) | |
10626 | { | |
10627 | *attachment = attachment_tmp; | |
10628 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10629 | } | |
10630 | ||
10631 | return ret; | |
10632 | } | |
10633 | ||
80152258 PA |
10634 | /* Invalidate the readahead cache. */ |
10635 | ||
10636 | static void | |
10637 | readahead_cache_invalidate (void) | |
10638 | { | |
10639 | struct remote_state *rs = get_remote_state (); | |
10640 | ||
10641 | rs->readahead_cache.fd = -1; | |
10642 | } | |
10643 | ||
10644 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10645 | ||
10646 | static void | |
10647 | readahead_cache_invalidate_fd (int fd) | |
10648 | { | |
10649 | struct remote_state *rs = get_remote_state (); | |
10650 | ||
10651 | if (rs->readahead_cache.fd == fd) | |
10652 | rs->readahead_cache.fd = -1; | |
10653 | } | |
10654 | ||
15a201c8 GB |
10655 | /* Set the filesystem remote_hostio functions that take FILENAME |
10656 | arguments will use. Return 0 on success, or -1 if an error | |
10657 | occurs (and set *REMOTE_ERRNO). */ | |
10658 | ||
10659 | static int | |
10660 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10661 | { | |
10662 | struct remote_state *rs = get_remote_state (); | |
10663 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10664 | char *p = rs->buf; | |
10665 | int left = get_remote_packet_size () - 1; | |
10666 | char arg[9]; | |
10667 | int ret; | |
10668 | ||
10669 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10670 | return 0; | |
10671 | ||
10672 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10673 | return 0; | |
10674 | ||
10675 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10676 | ||
10677 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10678 | remote_buffer_add_string (&p, &left, arg); | |
10679 | ||
10680 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10681 | remote_errno, NULL, NULL); | |
10682 | ||
10683 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10684 | return 0; | |
10685 | ||
10686 | if (ret == 0) | |
10687 | rs->fs_pid = required_pid; | |
10688 | ||
10689 | return ret; | |
10690 | } | |
10691 | ||
12e2a5fd | 10692 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10693 | |
10694 | static int | |
cd897586 | 10695 | remote_hostio_open (struct target_ops *self, |
07c138c8 | 10696 | struct inferior *inf, const char *filename, |
4313b8c0 GB |
10697 | int flags, int mode, int warn_if_slow, |
10698 | int *remote_errno) | |
a6b151f1 DJ |
10699 | { |
10700 | struct remote_state *rs = get_remote_state (); | |
10701 | char *p = rs->buf; | |
10702 | int left = get_remote_packet_size () - 1; | |
10703 | ||
4313b8c0 GB |
10704 | if (warn_if_slow) |
10705 | { | |
10706 | static int warning_issued = 0; | |
10707 | ||
10708 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
10709 | filename); | |
10710 | ||
10711 | if (!warning_issued) | |
10712 | { | |
10713 | warning (_("File transfers from remote targets can be slow." | |
10714 | " Use \"set sysroot\" to access files locally" | |
10715 | " instead.")); | |
10716 | warning_issued = 1; | |
10717 | } | |
10718 | } | |
10719 | ||
15a201c8 GB |
10720 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10721 | return -1; | |
10722 | ||
a6b151f1 DJ |
10723 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10724 | ||
10725 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10726 | strlen (filename)); | |
10727 | remote_buffer_add_string (&p, &left, ","); | |
10728 | ||
10729 | remote_buffer_add_int (&p, &left, flags); | |
10730 | remote_buffer_add_string (&p, &left, ","); | |
10731 | ||
10732 | remote_buffer_add_int (&p, &left, mode); | |
10733 | ||
10734 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10735 | remote_errno, NULL, NULL); | |
10736 | } | |
10737 | ||
12e2a5fd | 10738 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10739 | |
10740 | static int | |
0d866f62 TT |
10741 | remote_hostio_pwrite (struct target_ops *self, |
10742 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10743 | ULONGEST offset, int *remote_errno) |
10744 | { | |
10745 | struct remote_state *rs = get_remote_state (); | |
10746 | char *p = rs->buf; | |
10747 | int left = get_remote_packet_size (); | |
10748 | int out_len; | |
10749 | ||
80152258 PA |
10750 | readahead_cache_invalidate_fd (fd); |
10751 | ||
a6b151f1 DJ |
10752 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
10753 | ||
10754 | remote_buffer_add_int (&p, &left, fd); | |
10755 | remote_buffer_add_string (&p, &left, ","); | |
10756 | ||
10757 | remote_buffer_add_int (&p, &left, offset); | |
10758 | remote_buffer_add_string (&p, &left, ","); | |
10759 | ||
124e13d9 | 10760 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10761 | get_remote_packet_size () - (p - rs->buf)); |
10762 | ||
10763 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10764 | remote_errno, NULL, NULL); | |
10765 | } | |
10766 | ||
80152258 PA |
10767 | /* Helper for the implementation of to_fileio_pread. Read the file |
10768 | from the remote side with vFile:pread. */ | |
a6b151f1 DJ |
10769 | |
10770 | static int | |
80152258 PA |
10771 | remote_hostio_pread_vFile (struct target_ops *self, |
10772 | int fd, gdb_byte *read_buf, int len, | |
10773 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
10774 | { |
10775 | struct remote_state *rs = get_remote_state (); | |
10776 | char *p = rs->buf; | |
10777 | char *attachment; | |
10778 | int left = get_remote_packet_size (); | |
10779 | int ret, attachment_len; | |
10780 | int read_len; | |
10781 | ||
10782 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10783 | ||
10784 | remote_buffer_add_int (&p, &left, fd); | |
10785 | remote_buffer_add_string (&p, &left, ","); | |
10786 | ||
10787 | remote_buffer_add_int (&p, &left, len); | |
10788 | remote_buffer_add_string (&p, &left, ","); | |
10789 | ||
10790 | remote_buffer_add_int (&p, &left, offset); | |
10791 | ||
10792 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10793 | remote_errno, &attachment, | |
10794 | &attachment_len); | |
10795 | ||
10796 | if (ret < 0) | |
10797 | return ret; | |
10798 | ||
bc20a4af | 10799 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10800 | read_buf, len); |
10801 | if (read_len != ret) | |
10802 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10803 | ||
10804 | return ret; | |
10805 | } | |
10806 | ||
80152258 PA |
10807 | /* Serve pread from the readahead cache. Returns number of bytes |
10808 | read, or 0 if the request can't be served from the cache. */ | |
10809 | ||
10810 | static int | |
10811 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
10812 | int fd, gdb_byte *read_buf, size_t len, | |
10813 | ULONGEST offset) | |
10814 | { | |
10815 | struct readahead_cache *cache = &rs->readahead_cache; | |
10816 | ||
10817 | if (cache->fd == fd | |
10818 | && cache->offset <= offset | |
10819 | && offset < cache->offset + cache->bufsize) | |
10820 | { | |
10821 | ULONGEST max = cache->offset + cache->bufsize; | |
10822 | ||
10823 | if (offset + len > max) | |
10824 | len = max - offset; | |
10825 | ||
10826 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
10827 | return len; | |
10828 | } | |
10829 | ||
10830 | return 0; | |
10831 | } | |
10832 | ||
10833 | /* Implementation of to_fileio_pread. */ | |
10834 | ||
10835 | static int | |
10836 | remote_hostio_pread (struct target_ops *self, | |
10837 | int fd, gdb_byte *read_buf, int len, | |
10838 | ULONGEST offset, int *remote_errno) | |
10839 | { | |
10840 | int ret; | |
10841 | struct remote_state *rs = get_remote_state (); | |
10842 | struct readahead_cache *cache = &rs->readahead_cache; | |
10843 | ||
10844 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10845 | if (ret > 0) | |
10846 | { | |
10847 | cache->hit_count++; | |
10848 | ||
10849 | if (remote_debug) | |
10850 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
10851 | pulongest (cache->hit_count)); | |
10852 | return ret; | |
10853 | } | |
10854 | ||
10855 | cache->miss_count++; | |
10856 | if (remote_debug) | |
10857 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
10858 | pulongest (cache->miss_count)); | |
10859 | ||
10860 | cache->fd = fd; | |
10861 | cache->offset = offset; | |
10862 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 10863 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 PA |
10864 | |
10865 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
10866 | cache->offset, remote_errno); | |
10867 | if (ret <= 0) | |
10868 | { | |
10869 | readahead_cache_invalidate_fd (fd); | |
10870 | return ret; | |
10871 | } | |
10872 | ||
10873 | cache->bufsize = ret; | |
10874 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10875 | } | |
10876 | ||
12e2a5fd | 10877 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
10878 | |
10879 | static int | |
df39ea25 | 10880 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10881 | { |
10882 | struct remote_state *rs = get_remote_state (); | |
10883 | char *p = rs->buf; | |
10884 | int left = get_remote_packet_size () - 1; | |
10885 | ||
80152258 PA |
10886 | readahead_cache_invalidate_fd (fd); |
10887 | ||
a6b151f1 DJ |
10888 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
10889 | ||
10890 | remote_buffer_add_int (&p, &left, fd); | |
10891 | ||
10892 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10893 | remote_errno, NULL, NULL); | |
10894 | } | |
10895 | ||
12e2a5fd | 10896 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
10897 | |
10898 | static int | |
dbbca37d | 10899 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
10900 | struct inferior *inf, const char *filename, |
10901 | int *remote_errno) | |
a6b151f1 DJ |
10902 | { |
10903 | struct remote_state *rs = get_remote_state (); | |
10904 | char *p = rs->buf; | |
10905 | int left = get_remote_packet_size () - 1; | |
10906 | ||
15a201c8 GB |
10907 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10908 | return -1; | |
10909 | ||
a6b151f1 DJ |
10910 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10911 | ||
10912 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10913 | strlen (filename)); | |
10914 | ||
10915 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10916 | remote_errno, NULL, NULL); | |
10917 | } | |
10918 | ||
12e2a5fd | 10919 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
10920 | |
10921 | static char * | |
fab5aa7c | 10922 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
10923 | struct inferior *inf, const char *filename, |
10924 | int *remote_errno) | |
b9e7b9c3 UW |
10925 | { |
10926 | struct remote_state *rs = get_remote_state (); | |
10927 | char *p = rs->buf; | |
10928 | char *attachment; | |
10929 | int left = get_remote_packet_size (); | |
10930 | int len, attachment_len; | |
10931 | int read_len; | |
10932 | char *ret; | |
10933 | ||
15a201c8 GB |
10934 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10935 | return NULL; | |
10936 | ||
b9e7b9c3 UW |
10937 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10938 | ||
10939 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10940 | strlen (filename)); | |
10941 | ||
10942 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10943 | remote_errno, &attachment, | |
10944 | &attachment_len); | |
10945 | ||
10946 | if (len < 0) | |
10947 | return NULL; | |
10948 | ||
224c3ddb | 10949 | ret = (char *) xmalloc (len + 1); |
b9e7b9c3 | 10950 | |
bc20a4af PA |
10951 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10952 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10953 | if (read_len != len) |
10954 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10955 | ||
10956 | ret[len] = '\0'; | |
10957 | return ret; | |
10958 | } | |
10959 | ||
12e2a5fd | 10960 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
10961 | |
10962 | static int | |
10963 | remote_hostio_fstat (struct target_ops *self, | |
10964 | int fd, struct stat *st, | |
10965 | int *remote_errno) | |
10966 | { | |
10967 | struct remote_state *rs = get_remote_state (); | |
10968 | char *p = rs->buf; | |
10969 | int left = get_remote_packet_size (); | |
10970 | int attachment_len, ret; | |
10971 | char *attachment; | |
10972 | struct fio_stat fst; | |
10973 | int read_len; | |
10974 | ||
464b0089 GB |
10975 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10976 | ||
10977 | remote_buffer_add_int (&p, &left, fd); | |
10978 | ||
10979 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10980 | remote_errno, &attachment, | |
10981 | &attachment_len); | |
10982 | if (ret < 0) | |
0a93529c | 10983 | { |
464b0089 GB |
10984 | if (*remote_errno != FILEIO_ENOSYS) |
10985 | return ret; | |
10986 | ||
0a93529c GB |
10987 | /* Strictly we should return -1, ENOSYS here, but when |
10988 | "set sysroot remote:" was implemented in August 2008 | |
10989 | BFD's need for a stat function was sidestepped with | |
10990 | this hack. This was not remedied until March 2015 | |
10991 | so we retain the previous behavior to avoid breaking | |
10992 | compatibility. | |
10993 | ||
10994 | Note that the memset is a March 2015 addition; older | |
10995 | GDBs set st_size *and nothing else* so the structure | |
10996 | would have garbage in all other fields. This might | |
10997 | break something but retaining the previous behavior | |
10998 | here would be just too wrong. */ | |
10999 | ||
11000 | memset (st, 0, sizeof (struct stat)); | |
11001 | st->st_size = INT_MAX; | |
11002 | return 0; | |
11003 | } | |
11004 | ||
0a93529c GB |
11005 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
11006 | (gdb_byte *) &fst, sizeof (fst)); | |
11007 | ||
11008 | if (read_len != ret) | |
11009 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
11010 | ||
11011 | if (read_len != sizeof (fst)) | |
11012 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
11013 | read_len, (int) sizeof (fst)); | |
11014 | ||
11015 | remote_fileio_to_host_stat (&fst, st); | |
11016 | ||
11017 | return 0; | |
11018 | } | |
11019 | ||
12e2a5fd | 11020 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
11021 | |
11022 | static int | |
11023 | remote_filesystem_is_local (struct target_ops *self) | |
11024 | { | |
11025 | /* Valgrind GDB presents itself as a remote target but works | |
11026 | on the local filesystem: it does not implement remote get | |
11027 | and users are not expected to set a sysroot. To handle | |
11028 | this case we treat the remote filesystem as local if the | |
11029 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
11030 | does not support vFile:open. */ | |
a3be80c3 | 11031 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
11032 | { |
11033 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
11034 | ||
11035 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
11036 | { | |
11037 | int fd, remote_errno; | |
11038 | ||
11039 | /* Try opening a file to probe support. The supplied | |
11040 | filename is irrelevant, we only care about whether | |
11041 | the stub recognizes the packet or not. */ | |
07c138c8 | 11042 | fd = remote_hostio_open (self, NULL, "just probing", |
4313b8c0 | 11043 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
11044 | &remote_errno); |
11045 | ||
11046 | if (fd >= 0) | |
11047 | remote_hostio_close (self, fd, &remote_errno); | |
11048 | ||
11049 | ps = packet_support (PACKET_vFile_open); | |
11050 | } | |
11051 | ||
11052 | if (ps == PACKET_DISABLE) | |
11053 | { | |
11054 | static int warning_issued = 0; | |
11055 | ||
11056 | if (!warning_issued) | |
11057 | { | |
11058 | warning (_("remote target does not support file" | |
11059 | " transfer, attempting to access files" | |
11060 | " from local filesystem.")); | |
11061 | warning_issued = 1; | |
11062 | } | |
11063 | ||
11064 | return 1; | |
11065 | } | |
11066 | } | |
11067 | ||
11068 | return 0; | |
11069 | } | |
11070 | ||
a6b151f1 DJ |
11071 | static int |
11072 | remote_fileio_errno_to_host (int errnum) | |
11073 | { | |
11074 | switch (errnum) | |
11075 | { | |
11076 | case FILEIO_EPERM: | |
11077 | return EPERM; | |
11078 | case FILEIO_ENOENT: | |
11079 | return ENOENT; | |
11080 | case FILEIO_EINTR: | |
11081 | return EINTR; | |
11082 | case FILEIO_EIO: | |
11083 | return EIO; | |
11084 | case FILEIO_EBADF: | |
11085 | return EBADF; | |
11086 | case FILEIO_EACCES: | |
11087 | return EACCES; | |
11088 | case FILEIO_EFAULT: | |
11089 | return EFAULT; | |
11090 | case FILEIO_EBUSY: | |
11091 | return EBUSY; | |
11092 | case FILEIO_EEXIST: | |
11093 | return EEXIST; | |
11094 | case FILEIO_ENODEV: | |
11095 | return ENODEV; | |
11096 | case FILEIO_ENOTDIR: | |
11097 | return ENOTDIR; | |
11098 | case FILEIO_EISDIR: | |
11099 | return EISDIR; | |
11100 | case FILEIO_EINVAL: | |
11101 | return EINVAL; | |
11102 | case FILEIO_ENFILE: | |
11103 | return ENFILE; | |
11104 | case FILEIO_EMFILE: | |
11105 | return EMFILE; | |
11106 | case FILEIO_EFBIG: | |
11107 | return EFBIG; | |
11108 | case FILEIO_ENOSPC: | |
11109 | return ENOSPC; | |
11110 | case FILEIO_ESPIPE: | |
11111 | return ESPIPE; | |
11112 | case FILEIO_EROFS: | |
11113 | return EROFS; | |
11114 | case FILEIO_ENOSYS: | |
11115 | return ENOSYS; | |
11116 | case FILEIO_ENAMETOOLONG: | |
11117 | return ENAMETOOLONG; | |
11118 | } | |
11119 | return -1; | |
11120 | } | |
11121 | ||
11122 | static char * | |
11123 | remote_hostio_error (int errnum) | |
11124 | { | |
11125 | int host_error = remote_fileio_errno_to_host (errnum); | |
11126 | ||
11127 | if (host_error == -1) | |
11128 | error (_("Unknown remote I/O error %d"), errnum); | |
11129 | else | |
11130 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
11131 | } | |
11132 | ||
a6b151f1 DJ |
11133 | static void |
11134 | remote_hostio_close_cleanup (void *opaque) | |
11135 | { | |
11136 | int fd = *(int *) opaque; | |
11137 | int remote_errno; | |
11138 | ||
df39ea25 | 11139 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
11140 | } |
11141 | ||
11142 | void | |
11143 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
11144 | { | |
11145 | struct cleanup *back_to, *close_cleanup; | |
11146 | int retcode, fd, remote_errno, bytes, io_size; | |
11147 | FILE *file; | |
11148 | gdb_byte *buffer; | |
11149 | int bytes_in_buffer; | |
11150 | int saw_eof; | |
11151 | ULONGEST offset; | |
5d93a237 | 11152 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11153 | |
5d93a237 | 11154 | if (!rs->remote_desc) |
a6b151f1 DJ |
11155 | error (_("command can only be used with remote target")); |
11156 | ||
614c279d | 11157 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
11158 | if (file == NULL) |
11159 | perror_with_name (local_file); | |
7c8a8b04 | 11160 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 11161 | |
07c138c8 | 11162 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 11163 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 | 11164 | | FILEIO_O_TRUNC), |
4313b8c0 | 11165 | 0700, 0, &remote_errno); |
a6b151f1 DJ |
11166 | if (fd == -1) |
11167 | remote_hostio_error (remote_errno); | |
11168 | ||
11169 | /* Send up to this many bytes at once. They won't all fit in the | |
11170 | remote packet limit, so we'll transfer slightly fewer. */ | |
11171 | io_size = get_remote_packet_size (); | |
224c3ddb | 11172 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11173 | make_cleanup (xfree, buffer); |
11174 | ||
11175 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11176 | ||
11177 | bytes_in_buffer = 0; | |
11178 | saw_eof = 0; | |
11179 | offset = 0; | |
11180 | while (bytes_in_buffer || !saw_eof) | |
11181 | { | |
11182 | if (!saw_eof) | |
11183 | { | |
3e43a32a MS |
11184 | bytes = fread (buffer + bytes_in_buffer, 1, |
11185 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
11186 | file); |
11187 | if (bytes == 0) | |
11188 | { | |
11189 | if (ferror (file)) | |
11190 | error (_("Error reading %s."), local_file); | |
11191 | else | |
11192 | { | |
11193 | /* EOF. Unless there is something still in the | |
11194 | buffer from the last iteration, we are done. */ | |
11195 | saw_eof = 1; | |
11196 | if (bytes_in_buffer == 0) | |
11197 | break; | |
11198 | } | |
11199 | } | |
11200 | } | |
11201 | else | |
11202 | bytes = 0; | |
11203 | ||
11204 | bytes += bytes_in_buffer; | |
11205 | bytes_in_buffer = 0; | |
11206 | ||
0d866f62 TT |
11207 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
11208 | fd, buffer, bytes, | |
3e43a32a | 11209 | offset, &remote_errno); |
a6b151f1 DJ |
11210 | |
11211 | if (retcode < 0) | |
11212 | remote_hostio_error (remote_errno); | |
11213 | else if (retcode == 0) | |
11214 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
11215 | else if (retcode < bytes) | |
11216 | { | |
11217 | /* Short write. Save the rest of the read data for the next | |
11218 | write. */ | |
11219 | bytes_in_buffer = bytes - retcode; | |
11220 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
11221 | } | |
11222 | ||
11223 | offset += retcode; | |
11224 | } | |
11225 | ||
11226 | discard_cleanups (close_cleanup); | |
df39ea25 | 11227 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11228 | remote_hostio_error (remote_errno); |
11229 | ||
11230 | if (from_tty) | |
11231 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
11232 | do_cleanups (back_to); | |
11233 | } | |
11234 | ||
11235 | void | |
11236 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
11237 | { | |
11238 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 11239 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
11240 | FILE *file; |
11241 | gdb_byte *buffer; | |
11242 | ULONGEST offset; | |
5d93a237 | 11243 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11244 | |
5d93a237 | 11245 | if (!rs->remote_desc) |
a6b151f1 DJ |
11246 | error (_("command can only be used with remote target")); |
11247 | ||
07c138c8 | 11248 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
4313b8c0 GB |
11249 | remote_file, FILEIO_O_RDONLY, 0, 0, |
11250 | &remote_errno); | |
a6b151f1 DJ |
11251 | if (fd == -1) |
11252 | remote_hostio_error (remote_errno); | |
11253 | ||
614c279d | 11254 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
11255 | if (file == NULL) |
11256 | perror_with_name (local_file); | |
7c8a8b04 | 11257 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
11258 | |
11259 | /* Send up to this many bytes at once. They won't all fit in the | |
11260 | remote packet limit, so we'll transfer slightly fewer. */ | |
11261 | io_size = get_remote_packet_size (); | |
224c3ddb | 11262 | buffer = (gdb_byte *) xmalloc (io_size); |
a6b151f1 DJ |
11263 | make_cleanup (xfree, buffer); |
11264 | ||
11265 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
11266 | ||
11267 | offset = 0; | |
11268 | while (1) | |
11269 | { | |
a3be983c TT |
11270 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
11271 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
11272 | if (bytes == 0) |
11273 | /* Success, but no bytes, means end-of-file. */ | |
11274 | break; | |
11275 | if (bytes == -1) | |
11276 | remote_hostio_error (remote_errno); | |
11277 | ||
11278 | offset += bytes; | |
11279 | ||
11280 | bytes = fwrite (buffer, 1, bytes, file); | |
11281 | if (bytes == 0) | |
11282 | perror_with_name (local_file); | |
11283 | } | |
11284 | ||
11285 | discard_cleanups (close_cleanup); | |
df39ea25 | 11286 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
11287 | remote_hostio_error (remote_errno); |
11288 | ||
11289 | if (from_tty) | |
11290 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
11291 | do_cleanups (back_to); | |
11292 | } | |
11293 | ||
11294 | void | |
11295 | remote_file_delete (const char *remote_file, int from_tty) | |
11296 | { | |
11297 | int retcode, remote_errno; | |
5d93a237 | 11298 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 11299 | |
5d93a237 | 11300 | if (!rs->remote_desc) |
a6b151f1 DJ |
11301 | error (_("command can only be used with remote target")); |
11302 | ||
dbbca37d | 11303 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 11304 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
11305 | if (retcode == -1) |
11306 | remote_hostio_error (remote_errno); | |
11307 | ||
11308 | if (from_tty) | |
11309 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11310 | } | |
11311 | ||
11312 | static void | |
11313 | remote_put_command (char *args, int from_tty) | |
11314 | { | |
11315 | struct cleanup *back_to; | |
11316 | char **argv; | |
11317 | ||
d1a41061 PP |
11318 | if (args == NULL) |
11319 | error_no_arg (_("file to put")); | |
11320 | ||
11321 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11322 | back_to = make_cleanup_freeargv (argv); |
11323 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11324 | error (_("Invalid parameters to remote put")); | |
11325 | ||
11326 | remote_file_put (argv[0], argv[1], from_tty); | |
11327 | ||
11328 | do_cleanups (back_to); | |
11329 | } | |
11330 | ||
11331 | static void | |
11332 | remote_get_command (char *args, int from_tty) | |
11333 | { | |
11334 | struct cleanup *back_to; | |
11335 | char **argv; | |
11336 | ||
d1a41061 PP |
11337 | if (args == NULL) |
11338 | error_no_arg (_("file to get")); | |
11339 | ||
11340 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11341 | back_to = make_cleanup_freeargv (argv); |
11342 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11343 | error (_("Invalid parameters to remote get")); | |
11344 | ||
11345 | remote_file_get (argv[0], argv[1], from_tty); | |
11346 | ||
11347 | do_cleanups (back_to); | |
11348 | } | |
11349 | ||
11350 | static void | |
11351 | remote_delete_command (char *args, int from_tty) | |
11352 | { | |
11353 | struct cleanup *back_to; | |
11354 | char **argv; | |
11355 | ||
d1a41061 PP |
11356 | if (args == NULL) |
11357 | error_no_arg (_("file to delete")); | |
11358 | ||
11359 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
11360 | back_to = make_cleanup_freeargv (argv); |
11361 | if (argv[0] == NULL || argv[1] != NULL) | |
11362 | error (_("Invalid parameters to remote delete")); | |
11363 | ||
11364 | remote_file_delete (argv[0], from_tty); | |
11365 | ||
11366 | do_cleanups (back_to); | |
11367 | } | |
11368 | ||
11369 | static void | |
11370 | remote_command (char *args, int from_tty) | |
11371 | { | |
635c7e8a | 11372 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
11373 | } |
11374 | ||
b2175913 | 11375 | static int |
19db3e69 | 11376 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 11377 | { |
4082afcc PA |
11378 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11379 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
11380 | return 1; |
11381 | else | |
11382 | return 0; | |
b2175913 MS |
11383 | } |
11384 | ||
74531fed | 11385 | static int |
2a9a2795 | 11386 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
11387 | { |
11388 | return 1; | |
11389 | } | |
11390 | ||
03583c20 | 11391 | static int |
2bfc0540 | 11392 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
11393 | { |
11394 | /* Only supported in extended mode. */ | |
11395 | return 0; | |
11396 | } | |
11397 | ||
8a305172 | 11398 | static int |
86ce2668 | 11399 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
11400 | { |
11401 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 11402 | |
901f9912 UW |
11403 | /* Only extended-remote handles being attached to multiple |
11404 | processes, even though plain remote can use the multi-process | |
11405 | thread id extensions, so that GDB knows the target process's | |
11406 | PID. */ | |
11407 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
11408 | } |
11409 | ||
70221824 | 11410 | static int |
782b2b07 SS |
11411 | remote_supports_cond_tracepoints (void) |
11412 | { | |
4082afcc | 11413 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
11414 | } |
11415 | ||
3788aec7 | 11416 | static int |
efcc2da7 | 11417 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11418 | { |
4082afcc | 11419 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11420 | } |
11421 | ||
70221824 | 11422 | static int |
7a697b8d SS |
11423 | remote_supports_fast_tracepoints (void) |
11424 | { | |
4082afcc | 11425 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11426 | } |
11427 | ||
0fb4aa4b PA |
11428 | static int |
11429 | remote_supports_static_tracepoints (void) | |
11430 | { | |
4082afcc | 11431 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11432 | } |
11433 | ||
1e4d1764 YQ |
11434 | static int |
11435 | remote_supports_install_in_trace (void) | |
11436 | { | |
4082afcc | 11437 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11438 | } |
11439 | ||
d248b706 | 11440 | static int |
7d178d6a | 11441 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11442 | { |
4082afcc PA |
11443 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11444 | == PACKET_ENABLE); | |
d248b706 KY |
11445 | } |
11446 | ||
3065dfb6 | 11447 | static int |
6de37a3a | 11448 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11449 | { |
4082afcc | 11450 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11451 | } |
11452 | ||
d3ce09f5 | 11453 | static int |
78eff0ec | 11454 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11455 | { |
4082afcc | 11456 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11457 | } |
11458 | ||
35b1e5cc | 11459 | static void |
ecae04e1 | 11460 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11461 | { |
11462 | putpkt ("QTinit"); | |
11463 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11464 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11465 | error (_("Target does not support this command.")); |
11466 | } | |
11467 | ||
11468 | static void free_actions_list (char **actions_list); | |
11469 | static void free_actions_list_cleanup_wrapper (void *); | |
11470 | static void | |
11471 | free_actions_list_cleanup_wrapper (void *al) | |
11472 | { | |
19ba03f4 | 11473 | free_actions_list ((char **) al); |
35b1e5cc SS |
11474 | } |
11475 | ||
11476 | static void | |
11477 | free_actions_list (char **actions_list) | |
11478 | { | |
11479 | int ndx; | |
11480 | ||
11481 | if (actions_list == 0) | |
11482 | return; | |
11483 | ||
11484 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11485 | xfree (actions_list[ndx]); | |
11486 | ||
11487 | xfree (actions_list); | |
11488 | } | |
11489 | ||
409873ef SS |
11490 | /* Recursive routine to walk through command list including loops, and |
11491 | download packets for each command. */ | |
11492 | ||
11493 | static void | |
11494 | remote_download_command_source (int num, ULONGEST addr, | |
11495 | struct command_line *cmds) | |
11496 | { | |
11497 | struct remote_state *rs = get_remote_state (); | |
11498 | struct command_line *cmd; | |
11499 | ||
11500 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11501 | { | |
0df8b418 | 11502 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11503 | strcpy (rs->buf, "QTDPsrc:"); |
11504 | encode_source_string (num, addr, "cmd", cmd->line, | |
11505 | rs->buf + strlen (rs->buf), | |
11506 | rs->buf_size - strlen (rs->buf)); | |
11507 | putpkt (rs->buf); | |
11508 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11509 | if (strcmp (target_buf, "OK")) | |
11510 | warning (_("Target does not support source download.")); | |
11511 | ||
11512 | if (cmd->control_type == while_control | |
11513 | || cmd->control_type == while_stepping_control) | |
11514 | { | |
11515 | remote_download_command_source (num, addr, *cmd->body_list); | |
11516 | ||
0df8b418 | 11517 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11518 | strcpy (rs->buf, "QTDPsrc:"); |
11519 | encode_source_string (num, addr, "cmd", "end", | |
11520 | rs->buf + strlen (rs->buf), | |
11521 | rs->buf_size - strlen (rs->buf)); | |
11522 | putpkt (rs->buf); | |
11523 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11524 | if (strcmp (target_buf, "OK")) | |
11525 | warning (_("Target does not support source download.")); | |
11526 | } | |
11527 | } | |
11528 | } | |
11529 | ||
35b1e5cc | 11530 | static void |
548f7808 | 11531 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11532 | { |
bba74b36 | 11533 | #define BUF_SIZE 2048 |
e8ba3115 | 11534 | |
35b1e5cc | 11535 | CORE_ADDR tpaddr; |
409873ef | 11536 | char addrbuf[40]; |
bba74b36 | 11537 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11538 | char **tdp_actions; |
11539 | char **stepping_actions; | |
11540 | int ndx; | |
11541 | struct cleanup *old_chain = NULL; | |
11542 | struct agent_expr *aexpr; | |
11543 | struct cleanup *aexpr_chain = NULL; | |
11544 | char *pkt; | |
e8ba3115 | 11545 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11546 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11547 | |
dc673c81 | 11548 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11549 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11550 | tdp_actions); | |
11551 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11552 | stepping_actions); | |
11553 | ||
11554 | tpaddr = loc->address; | |
11555 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11556 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11557 | addrbuf, /* address */ | |
11558 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11559 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11560 | /* Fast tracepoints are mostly handled by the target, but we can |
11561 | tell the target how big of an instruction block should be moved | |
11562 | around. */ | |
11563 | if (b->type == bp_fast_tracepoint) | |
11564 | { | |
11565 | /* Only test for support at download time; we may not know | |
11566 | target capabilities at definition time. */ | |
11567 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11568 | { |
6b940e6a PL |
11569 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11570 | NULL)) | |
bba74b36 | 11571 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11572 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11573 | else |
e8ba3115 YQ |
11574 | /* If it passed validation at definition but fails now, |
11575 | something is very wrong. */ | |
11576 | internal_error (__FILE__, __LINE__, | |
11577 | _("Fast tracepoint not " | |
11578 | "valid during download")); | |
35b1e5cc | 11579 | } |
e8ba3115 YQ |
11580 | else |
11581 | /* Fast tracepoints are functionally identical to regular | |
11582 | tracepoints, so don't take lack of support as a reason to | |
11583 | give up on the trace run. */ | |
11584 | warning (_("Target does not support fast tracepoints, " | |
11585 | "downloading %d as regular tracepoint"), b->number); | |
11586 | } | |
11587 | else if (b->type == bp_static_tracepoint) | |
11588 | { | |
11589 | /* Only test for support at download time; we may not know | |
11590 | target capabilities at definition time. */ | |
11591 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11592 | { |
e8ba3115 | 11593 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11594 | |
e8ba3115 YQ |
11595 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11596 | strcat (buf, ":S"); | |
0fb4aa4b | 11597 | else |
e8ba3115 | 11598 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11599 | } |
e8ba3115 YQ |
11600 | else |
11601 | /* Fast tracepoints are functionally identical to regular | |
11602 | tracepoints, so don't take lack of support as a reason | |
11603 | to give up on the trace run. */ | |
11604 | error (_("Target does not support static tracepoints")); | |
11605 | } | |
11606 | /* If the tracepoint has a conditional, make it into an agent | |
11607 | expression and append to the definition. */ | |
11608 | if (loc->cond) | |
11609 | { | |
11610 | /* Only test support at download time, we may not know target | |
11611 | capabilities at definition time. */ | |
11612 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11613 | { |
e8ba3115 YQ |
11614 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11615 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11616 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11617 | aexpr->len); | |
e8ba3115 YQ |
11618 | pkt = buf + strlen (buf); |
11619 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11620 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11621 | *pkt = '\0'; | |
11622 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11623 | } |
e8ba3115 YQ |
11624 | else |
11625 | warning (_("Target does not support conditional tracepoints, " | |
11626 | "ignoring tp %d cond"), b->number); | |
11627 | } | |
35b1e5cc | 11628 | |
d9b3f62e | 11629 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11630 | strcat (buf, "-"); |
11631 | putpkt (buf); | |
11632 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11633 | if (strcmp (target_buf, "OK")) | |
11634 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11635 | |
e8ba3115 YQ |
11636 | /* do_single_steps (t); */ |
11637 | if (tdp_actions) | |
11638 | { | |
11639 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11640 | { |
e8ba3115 | 11641 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11642 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11643 | b->number, addrbuf, /* address */ | |
11644 | tdp_actions[ndx], | |
11645 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11646 | ? '-' : 0)); | |
e8ba3115 YQ |
11647 | putpkt (buf); |
11648 | remote_get_noisy_reply (&target_buf, | |
11649 | &target_buf_size); | |
11650 | if (strcmp (target_buf, "OK")) | |
11651 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11652 | } |
e8ba3115 YQ |
11653 | } |
11654 | if (stepping_actions) | |
11655 | { | |
11656 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11657 | { |
e8ba3115 | 11658 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11659 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11660 | b->number, addrbuf, /* address */ | |
11661 | ((ndx == 0) ? "S" : ""), | |
11662 | stepping_actions[ndx], | |
11663 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11664 | putpkt (buf); |
11665 | remote_get_noisy_reply (&target_buf, | |
11666 | &target_buf_size); | |
11667 | if (strcmp (target_buf, "OK")) | |
11668 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11669 | } |
e8ba3115 | 11670 | } |
409873ef | 11671 | |
4082afcc | 11672 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11673 | { |
f00aae0f | 11674 | if (b->location != NULL) |
409873ef | 11675 | { |
e8ba3115 | 11676 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11677 | encode_source_string (b->number, loc->address, "at", |
11678 | event_location_to_string (b->location), | |
11679 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11680 | putpkt (buf); |
11681 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11682 | if (strcmp (target_buf, "OK")) | |
11683 | warning (_("Target does not support source download.")); | |
409873ef | 11684 | } |
e8ba3115 YQ |
11685 | if (b->cond_string) |
11686 | { | |
11687 | strcpy (buf, "QTDPsrc:"); | |
11688 | encode_source_string (b->number, loc->address, | |
11689 | "cond", b->cond_string, buf + strlen (buf), | |
11690 | 2048 - strlen (buf)); | |
11691 | putpkt (buf); | |
11692 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11693 | if (strcmp (target_buf, "OK")) | |
11694 | warning (_("Target does not support source download.")); | |
11695 | } | |
11696 | remote_download_command_source (b->number, loc->address, | |
11697 | breakpoint_commands (b)); | |
35b1e5cc | 11698 | } |
e8ba3115 YQ |
11699 | |
11700 | do_cleanups (old_chain); | |
35b1e5cc SS |
11701 | } |
11702 | ||
1e4d1764 | 11703 | static int |
a52a8357 | 11704 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11705 | { |
1e51243a PA |
11706 | struct remote_state *rs = get_remote_state (); |
11707 | struct trace_status *ts; | |
11708 | int status; | |
11709 | ||
11710 | /* Don't try to install tracepoints until we've relocated our | |
11711 | symbols, and fetched and merged the target's tracepoint list with | |
11712 | ours. */ | |
11713 | if (rs->starting_up) | |
11714 | return 0; | |
11715 | ||
11716 | ts = current_trace_status (); | |
8bd200f1 | 11717 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11718 | |
11719 | if (status == -1 || !ts->running_known || !ts->running) | |
11720 | return 0; | |
11721 | ||
11722 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11723 | installing tracepoint in trace, we have to return. */ | |
11724 | if (!remote_supports_install_in_trace ()) | |
11725 | return 0; | |
11726 | ||
11727 | return 1; | |
11728 | } | |
11729 | ||
11730 | ||
35b1e5cc | 11731 | static void |
559d2b81 TT |
11732 | remote_download_trace_state_variable (struct target_ops *self, |
11733 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11734 | { |
11735 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11736 | char *p; |
35b1e5cc | 11737 | |
bba74b36 YQ |
11738 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11739 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11740 | tsv->builtin); | |
00bf0b85 SS |
11741 | p = rs->buf + strlen (rs->buf); |
11742 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11743 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11744 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11745 | *p++ = '\0'; |
35b1e5cc SS |
11746 | putpkt (rs->buf); |
11747 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11748 | if (*target_buf == '\0') |
11749 | error (_("Target does not support this command.")); | |
11750 | if (strcmp (target_buf, "OK") != 0) | |
11751 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11752 | } |
11753 | ||
d248b706 | 11754 | static void |
46670d57 TT |
11755 | remote_enable_tracepoint (struct target_ops *self, |
11756 | struct bp_location *location) | |
d248b706 KY |
11757 | { |
11758 | struct remote_state *rs = get_remote_state (); | |
11759 | char addr_buf[40]; | |
11760 | ||
11761 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11762 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11763 | location->owner->number, addr_buf); | |
d248b706 KY |
11764 | putpkt (rs->buf); |
11765 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11766 | if (*rs->buf == '\0') | |
11767 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11768 | if (strcmp (rs->buf, "OK") != 0) | |
11769 | error (_("Error on target while enabling tracepoint.")); | |
11770 | } | |
11771 | ||
11772 | static void | |
780b049c TT |
11773 | remote_disable_tracepoint (struct target_ops *self, |
11774 | struct bp_location *location) | |
d248b706 KY |
11775 | { |
11776 | struct remote_state *rs = get_remote_state (); | |
11777 | char addr_buf[40]; | |
11778 | ||
11779 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11780 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11781 | location->owner->number, addr_buf); | |
d248b706 KY |
11782 | putpkt (rs->buf); |
11783 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11784 | if (*rs->buf == '\0') | |
11785 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11786 | if (strcmp (rs->buf, "OK") != 0) | |
11787 | error (_("Error on target while disabling tracepoint.")); | |
11788 | } | |
11789 | ||
35b1e5cc | 11790 | static void |
583f9a86 | 11791 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
11792 | { |
11793 | asection *s; | |
81b9b86e | 11794 | bfd *abfd = NULL; |
35b1e5cc | 11795 | bfd_size_type size; |
608bcef2 | 11796 | bfd_vma vma; |
35b1e5cc | 11797 | int anysecs = 0; |
c2fa21f1 | 11798 | int offset = 0; |
35b1e5cc SS |
11799 | |
11800 | if (!exec_bfd) | |
11801 | return; /* No information to give. */ | |
11802 | ||
11803 | strcpy (target_buf, "QTro"); | |
9779ab84 | 11804 | offset = strlen (target_buf); |
35b1e5cc SS |
11805 | for (s = exec_bfd->sections; s; s = s->next) |
11806 | { | |
11807 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 11808 | int sec_length; |
35b1e5cc SS |
11809 | |
11810 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 11811 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
11812 | (s->flags & SEC_READONLY) == 0) |
11813 | continue; | |
11814 | ||
11815 | anysecs = 1; | |
81b9b86e | 11816 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 11817 | size = bfd_get_section_size (s); |
608bcef2 HZ |
11818 | sprintf_vma (tmp1, vma); |
11819 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
11820 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
11821 | if (offset + sec_length + 1 > target_buf_size) | |
11822 | { | |
4082afcc | 11823 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 11824 | warning (_("\ |
c2fa21f1 HZ |
11825 | Too many sections for read-only sections definition packet.")); |
11826 | break; | |
11827 | } | |
bba74b36 YQ |
11828 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11829 | tmp1, tmp2); | |
c2fa21f1 | 11830 | offset += sec_length; |
35b1e5cc SS |
11831 | } |
11832 | if (anysecs) | |
11833 | { | |
11834 | putpkt (target_buf); | |
11835 | getpkt (&target_buf, &target_buf_size, 0); | |
11836 | } | |
11837 | } | |
11838 | ||
11839 | static void | |
e2d1aae3 | 11840 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11841 | { |
11842 | putpkt ("QTStart"); | |
11843 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11844 | if (*target_buf == '\0') |
11845 | error (_("Target does not support this command.")); | |
11846 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11847 | error (_("Bogus reply from target: %s"), target_buf); |
11848 | } | |
11849 | ||
11850 | static int | |
8bd200f1 | 11851 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11852 | { |
953b98d1 | 11853 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11854 | char *p = NULL; |
0df8b418 | 11855 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11856 | extern int trace_regblock_size; |
bd3eecc3 PA |
11857 | enum packet_result result; |
11858 | ||
4082afcc | 11859 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11860 | return -1; |
a744cf53 | 11861 | |
00bf0b85 SS |
11862 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11863 | ||
049dc89b JK |
11864 | putpkt ("qTStatus"); |
11865 | ||
492d29ea | 11866 | TRY |
67f41397 JK |
11867 | { |
11868 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11869 | } | |
492d29ea | 11870 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11871 | { |
598d3636 JK |
11872 | if (ex.error != TARGET_CLOSE_ERROR) |
11873 | { | |
11874 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11875 | return -1; | |
11876 | } | |
11877 | throw_exception (ex); | |
67f41397 | 11878 | } |
492d29ea | 11879 | END_CATCH |
00bf0b85 | 11880 | |
bd3eecc3 PA |
11881 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11882 | ||
00bf0b85 | 11883 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11884 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11885 | return -1; |
35b1e5cc | 11886 | |
00bf0b85 | 11887 | /* We're working with a live target. */ |
f5911ea1 | 11888 | ts->filename = NULL; |
00bf0b85 | 11889 | |
00bf0b85 | 11890 | if (*p++ != 'T') |
35b1e5cc SS |
11891 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11892 | ||
84cebc4a YQ |
11893 | /* Function 'parse_trace_status' sets default value of each field of |
11894 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11895 | parse_trace_status (p, ts); |
11896 | ||
11897 | return ts->running; | |
35b1e5cc SS |
11898 | } |
11899 | ||
70221824 | 11900 | static void |
db90e85c | 11901 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11902 | struct uploaded_tp *utp) |
11903 | { | |
11904 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11905 | char *reply; |
11906 | struct bp_location *loc; | |
11907 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11908 | size_t size = get_remote_packet_size (); |
f196051f SS |
11909 | |
11910 | if (tp) | |
11911 | { | |
11912 | tp->base.hit_count = 0; | |
11913 | tp->traceframe_usage = 0; | |
11914 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11915 | { | |
11916 | /* If the tracepoint was never downloaded, don't go asking for | |
11917 | any status. */ | |
11918 | if (tp->number_on_target == 0) | |
11919 | continue; | |
bba74b36 YQ |
11920 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11921 | phex_nz (loc->address, 0)); | |
f196051f SS |
11922 | putpkt (rs->buf); |
11923 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11924 | if (reply && *reply) | |
11925 | { | |
11926 | if (*reply == 'V') | |
11927 | parse_tracepoint_status (reply + 1, bp, utp); | |
11928 | } | |
11929 | } | |
11930 | } | |
11931 | else if (utp) | |
11932 | { | |
11933 | utp->hit_count = 0; | |
11934 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11935 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11936 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11937 | putpkt (rs->buf); |
11938 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11939 | if (reply && *reply) | |
11940 | { | |
11941 | if (*reply == 'V') | |
11942 | parse_tracepoint_status (reply + 1, bp, utp); | |
11943 | } | |
11944 | } | |
11945 | } | |
11946 | ||
35b1e5cc | 11947 | static void |
74499f1b | 11948 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11949 | { |
11950 | putpkt ("QTStop"); | |
11951 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11952 | if (*target_buf == '\0') |
11953 | error (_("Target does not support this command.")); | |
11954 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11955 | error (_("Bogus reply from target: %s"), target_buf); |
11956 | } | |
11957 | ||
11958 | static int | |
bd4c6793 TT |
11959 | remote_trace_find (struct target_ops *self, |
11960 | enum trace_find_type type, int num, | |
cc5925ad | 11961 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11962 | int *tpp) |
11963 | { | |
11964 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11965 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11966 | char *p, *reply; |
11967 | int target_frameno = -1, target_tracept = -1; | |
11968 | ||
e6e4e701 PA |
11969 | /* Lookups other than by absolute frame number depend on the current |
11970 | trace selected, so make sure it is correct on the remote end | |
11971 | first. */ | |
11972 | if (type != tfind_number) | |
11973 | set_remote_traceframe (); | |
11974 | ||
35b1e5cc SS |
11975 | p = rs->buf; |
11976 | strcpy (p, "QTFrame:"); | |
11977 | p = strchr (p, '\0'); | |
11978 | switch (type) | |
11979 | { | |
11980 | case tfind_number: | |
bba74b36 | 11981 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11982 | break; |
11983 | case tfind_pc: | |
bba74b36 | 11984 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11985 | break; |
11986 | case tfind_tp: | |
bba74b36 | 11987 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11988 | break; |
11989 | case tfind_range: | |
bba74b36 YQ |
11990 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11991 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11992 | break; |
11993 | case tfind_outside: | |
bba74b36 YQ |
11994 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11995 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11996 | break; |
11997 | default: | |
9b20d036 | 11998 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11999 | } |
12000 | ||
12001 | putpkt (rs->buf); | |
2f65bcb7 | 12002 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
12003 | if (*reply == '\0') |
12004 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
12005 | |
12006 | while (reply && *reply) | |
12007 | switch (*reply) | |
12008 | { | |
12009 | case 'F': | |
f197e0f1 VP |
12010 | p = ++reply; |
12011 | target_frameno = (int) strtol (p, &reply, 16); | |
12012 | if (reply == p) | |
12013 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
12014 | /* Don't update our remote traceframe number cache on failure |
12015 | to select a remote traceframe. */ | |
f197e0f1 VP |
12016 | if (target_frameno == -1) |
12017 | return -1; | |
35b1e5cc SS |
12018 | break; |
12019 | case 'T': | |
f197e0f1 VP |
12020 | p = ++reply; |
12021 | target_tracept = (int) strtol (p, &reply, 16); | |
12022 | if (reply == p) | |
12023 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
12024 | break; |
12025 | case 'O': /* "OK"? */ | |
12026 | if (reply[1] == 'K' && reply[2] == '\0') | |
12027 | reply += 2; | |
12028 | else | |
12029 | error (_("Bogus reply from target: %s"), reply); | |
12030 | break; | |
12031 | default: | |
12032 | error (_("Bogus reply from target: %s"), reply); | |
12033 | } | |
12034 | if (tpp) | |
12035 | *tpp = target_tracept; | |
e6e4e701 | 12036 | |
262e1174 | 12037 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
12038 | return target_frameno; |
12039 | } | |
12040 | ||
12041 | static int | |
4011015b TT |
12042 | remote_get_trace_state_variable_value (struct target_ops *self, |
12043 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
12044 | { |
12045 | struct remote_state *rs = get_remote_state (); | |
12046 | char *reply; | |
12047 | ULONGEST uval; | |
12048 | ||
e6e4e701 PA |
12049 | set_remote_traceframe (); |
12050 | ||
bba74b36 | 12051 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
12052 | putpkt (rs->buf); |
12053 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12054 | if (reply && *reply) | |
12055 | { | |
12056 | if (*reply == 'V') | |
12057 | { | |
12058 | unpack_varlen_hex (reply + 1, &uval); | |
12059 | *val = (LONGEST) uval; | |
12060 | return 1; | |
12061 | } | |
12062 | } | |
12063 | return 0; | |
12064 | } | |
12065 | ||
00bf0b85 | 12066 | static int |
dc3decaf | 12067 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
12068 | { |
12069 | struct remote_state *rs = get_remote_state (); | |
12070 | char *p, *reply; | |
12071 | ||
12072 | p = rs->buf; | |
12073 | strcpy (p, "QTSave:"); | |
12074 | p += strlen (p); | |
12075 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
12076 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 12077 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
12078 | *p++ = '\0'; |
12079 | putpkt (rs->buf); | |
ad91cd99 | 12080 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 12081 | if (*reply == '\0') |
ad91cd99 PA |
12082 | error (_("Target does not support this command.")); |
12083 | if (strcmp (reply, "OK") != 0) | |
12084 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
12085 | return 0; |
12086 | } | |
12087 | ||
12088 | /* This is basically a memory transfer, but needs to be its own packet | |
12089 | because we don't know how the target actually organizes its trace | |
12090 | memory, plus we want to be able to ask for as much as possible, but | |
12091 | not be unhappy if we don't get as much as we ask for. */ | |
12092 | ||
12093 | static LONGEST | |
88ee6f45 TT |
12094 | remote_get_raw_trace_data (struct target_ops *self, |
12095 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
12096 | { |
12097 | struct remote_state *rs = get_remote_state (); | |
12098 | char *reply; | |
12099 | char *p; | |
12100 | int rslt; | |
12101 | ||
12102 | p = rs->buf; | |
12103 | strcpy (p, "qTBuffer:"); | |
12104 | p += strlen (p); | |
12105 | p += hexnumstr (p, offset); | |
12106 | *p++ = ','; | |
12107 | p += hexnumstr (p, len); | |
12108 | *p++ = '\0'; | |
12109 | ||
12110 | putpkt (rs->buf); | |
12111 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12112 | if (reply && *reply) | |
12113 | { | |
12114 | /* 'l' by itself means we're at the end of the buffer and | |
12115 | there is nothing more to get. */ | |
12116 | if (*reply == 'l') | |
12117 | return 0; | |
12118 | ||
12119 | /* Convert the reply into binary. Limit the number of bytes to | |
12120 | convert according to our passed-in buffer size, rather than | |
12121 | what was returned in the packet; if the target is | |
12122 | unexpectedly generous and gives us a bigger reply than we | |
12123 | asked for, we don't want to crash. */ | |
12124 | rslt = hex2bin (target_buf, buf, len); | |
12125 | return rslt; | |
12126 | } | |
12127 | ||
12128 | /* Something went wrong, flag as an error. */ | |
12129 | return -1; | |
12130 | } | |
12131 | ||
35b1e5cc | 12132 | static void |
37b25738 | 12133 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
12134 | { |
12135 | struct remote_state *rs = get_remote_state (); | |
12136 | ||
4082afcc | 12137 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 12138 | { |
ad91cd99 PA |
12139 | char *reply; |
12140 | ||
bba74b36 | 12141 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 12142 | putpkt (rs->buf); |
ad91cd99 PA |
12143 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12144 | if (*reply == '\0') | |
33da3f1c | 12145 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12146 | if (strcmp (reply, "OK") != 0) |
12147 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
12148 | } |
12149 | else if (val) | |
12150 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
12151 | } |
12152 | ||
dc146f7c VP |
12153 | static int |
12154 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
12155 | { | |
12156 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 12157 | |
fe978cb0 PA |
12158 | if (info && info->priv) |
12159 | return info->priv->core; | |
dc146f7c VP |
12160 | return -1; |
12161 | } | |
12162 | ||
4daf5ac0 | 12163 | static void |
736d5b1f | 12164 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
12165 | { |
12166 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 12167 | char *reply; |
4daf5ac0 | 12168 | |
bba74b36 | 12169 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 12170 | putpkt (rs->buf); |
ad91cd99 PA |
12171 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
12172 | if (*reply == '\0') | |
4daf5ac0 | 12173 | error (_("Target does not support this command.")); |
ad91cd99 PA |
12174 | if (strcmp (reply, "OK") != 0) |
12175 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
12176 | } |
12177 | ||
b3b9301e | 12178 | static struct traceframe_info * |
a893e81f | 12179 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
12180 | { |
12181 | char *text; | |
12182 | ||
12183 | text = target_read_stralloc (¤t_target, | |
12184 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
12185 | if (text != NULL) | |
12186 | { | |
12187 | struct traceframe_info *info; | |
12188 | struct cleanup *back_to = make_cleanup (xfree, text); | |
12189 | ||
12190 | info = parse_traceframe_info (text); | |
12191 | do_cleanups (back_to); | |
12192 | return info; | |
12193 | } | |
12194 | ||
12195 | return NULL; | |
12196 | } | |
12197 | ||
405f8e94 SS |
12198 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
12199 | instruction on which a fast tracepoint may be placed. Returns -1 | |
12200 | if the packet is not supported, and 0 if the minimum instruction | |
12201 | length is unknown. */ | |
12202 | ||
12203 | static int | |
0e67620a | 12204 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
12205 | { |
12206 | struct remote_state *rs = get_remote_state (); | |
12207 | char *reply; | |
12208 | ||
e886a173 PA |
12209 | /* If we're not debugging a process yet, the IPA can't be |
12210 | loaded. */ | |
12211 | if (!target_has_execution) | |
12212 | return 0; | |
12213 | ||
12214 | /* Make sure the remote is pointing at the right process. */ | |
12215 | set_general_process (); | |
12216 | ||
bba74b36 | 12217 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
12218 | putpkt (rs->buf); |
12219 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12220 | if (*reply == '\0') | |
12221 | return -1; | |
12222 | else | |
12223 | { | |
12224 | ULONGEST min_insn_len; | |
12225 | ||
12226 | unpack_varlen_hex (reply, &min_insn_len); | |
12227 | ||
12228 | return (int) min_insn_len; | |
12229 | } | |
12230 | } | |
12231 | ||
f6f899bf | 12232 | static void |
4da384be | 12233 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 12234 | { |
4082afcc | 12235 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
12236 | { |
12237 | struct remote_state *rs = get_remote_state (); | |
12238 | char *buf = rs->buf; | |
12239 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12240 | enum packet_result result; | |
12241 | ||
12242 | gdb_assert (val >= 0 || val == -1); | |
12243 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
12244 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
12245 | if (val < 0) | |
12246 | { | |
12247 | *buf++ = '-'; | |
12248 | buf += hexnumstr (buf, (ULONGEST) -val); | |
12249 | } | |
12250 | else | |
12251 | buf += hexnumstr (buf, (ULONGEST) val); | |
12252 | ||
12253 | putpkt (rs->buf); | |
12254 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
12255 | result = packet_ok (rs->buf, | |
12256 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
12257 | ||
12258 | if (result != PACKET_OK) | |
12259 | warning (_("Bogus reply from target: %s"), rs->buf); | |
12260 | } | |
12261 | } | |
12262 | ||
f196051f | 12263 | static int |
d9e68a2c TT |
12264 | remote_set_trace_notes (struct target_ops *self, |
12265 | const char *user, const char *notes, | |
ca623f82 | 12266 | const char *stop_notes) |
f196051f SS |
12267 | { |
12268 | struct remote_state *rs = get_remote_state (); | |
12269 | char *reply; | |
12270 | char *buf = rs->buf; | |
12271 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12272 | int nbytes; | |
12273 | ||
12274 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
12275 | if (user) | |
12276 | { | |
12277 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 12278 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
12279 | buf += 2 * nbytes; |
12280 | *buf++ = ';'; | |
12281 | } | |
12282 | if (notes) | |
12283 | { | |
12284 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 12285 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
12286 | buf += 2 * nbytes; |
12287 | *buf++ = ';'; | |
12288 | } | |
12289 | if (stop_notes) | |
12290 | { | |
12291 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 12292 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
12293 | buf += 2 * nbytes; |
12294 | *buf++ = ';'; | |
12295 | } | |
12296 | /* Ensure the buffer is terminated. */ | |
12297 | *buf = '\0'; | |
12298 | ||
12299 | putpkt (rs->buf); | |
12300 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12301 | if (*reply == '\0') | |
12302 | return 0; | |
12303 | ||
12304 | if (strcmp (reply, "OK") != 0) | |
12305 | error (_("Bogus reply from target: %s"), reply); | |
12306 | ||
12307 | return 1; | |
12308 | } | |
12309 | ||
d1feda86 | 12310 | static int |
2c152180 | 12311 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 12312 | { |
4082afcc | 12313 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
12314 | { |
12315 | struct remote_state *rs = get_remote_state (); | |
12316 | ||
12317 | /* If the stub supports QAgent. */ | |
bba74b36 | 12318 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
12319 | putpkt (rs->buf); |
12320 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12321 | ||
12322 | if (strcmp (rs->buf, "OK") == 0) | |
12323 | { | |
12324 | use_agent = use; | |
12325 | return 1; | |
12326 | } | |
12327 | } | |
12328 | ||
12329 | return 0; | |
12330 | } | |
12331 | ||
12332 | static int | |
fe38f897 | 12333 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 12334 | { |
4082afcc | 12335 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
12336 | } |
12337 | ||
9accd112 MM |
12338 | struct btrace_target_info |
12339 | { | |
12340 | /* The ptid of the traced thread. */ | |
12341 | ptid_t ptid; | |
f4abbc16 MM |
12342 | |
12343 | /* The obtained branch trace configuration. */ | |
12344 | struct btrace_config conf; | |
9accd112 MM |
12345 | }; |
12346 | ||
f4abbc16 MM |
12347 | /* Reset our idea of our target's btrace configuration. */ |
12348 | ||
12349 | static void | |
12350 | remote_btrace_reset (void) | |
12351 | { | |
12352 | struct remote_state *rs = get_remote_state (); | |
12353 | ||
12354 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12355 | } | |
12356 | ||
9accd112 MM |
12357 | /* Check whether the target supports branch tracing. */ |
12358 | ||
12359 | static int | |
043c3577 | 12360 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 12361 | { |
4082afcc | 12362 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 12363 | return 0; |
4082afcc | 12364 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
12365 | return 0; |
12366 | ||
043c3577 MM |
12367 | switch (format) |
12368 | { | |
12369 | case BTRACE_FORMAT_NONE: | |
12370 | return 0; | |
12371 | ||
12372 | case BTRACE_FORMAT_BTS: | |
12373 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
12374 | |
12375 | case BTRACE_FORMAT_PT: | |
12376 | /* The trace is decoded on the host. Even if our target supports it, | |
12377 | we still need to have libipt to decode the trace. */ | |
12378 | #if defined (HAVE_LIBIPT) | |
12379 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12380 | #else /* !defined (HAVE_LIBIPT) */ | |
12381 | return 0; | |
12382 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
12383 | } |
12384 | ||
12385 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
12386 | } |
12387 | ||
f4abbc16 MM |
12388 | /* Synchronize the configuration with the target. */ |
12389 | ||
12390 | static void | |
12391 | btrace_sync_conf (const struct btrace_config *conf) | |
12392 | { | |
d33501a5 MM |
12393 | struct packet_config *packet; |
12394 | struct remote_state *rs; | |
12395 | char *buf, *pos, *endbuf; | |
12396 | ||
12397 | rs = get_remote_state (); | |
12398 | buf = rs->buf; | |
12399 | endbuf = buf + get_remote_packet_size (); | |
12400 | ||
12401 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12402 | if (packet_config_support (packet) == PACKET_ENABLE | |
12403 | && conf->bts.size != rs->btrace_config.bts.size) | |
12404 | { | |
12405 | pos = buf; | |
12406 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12407 | conf->bts.size); | |
12408 | ||
12409 | putpkt (buf); | |
12410 | getpkt (&buf, &rs->buf_size, 0); | |
12411 | ||
12412 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12413 | { | |
12414 | if (buf[0] == 'E' && buf[1] == '.') | |
12415 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12416 | else | |
12417 | error (_("Failed to configure the BTS buffer size.")); | |
12418 | } | |
12419 | ||
12420 | rs->btrace_config.bts.size = conf->bts.size; | |
12421 | } | |
b20a6524 MM |
12422 | |
12423 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12424 | if (packet_config_support (packet) == PACKET_ENABLE | |
12425 | && conf->pt.size != rs->btrace_config.pt.size) | |
12426 | { | |
12427 | pos = buf; | |
12428 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12429 | conf->pt.size); | |
12430 | ||
12431 | putpkt (buf); | |
12432 | getpkt (&buf, &rs->buf_size, 0); | |
12433 | ||
12434 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12435 | { | |
12436 | if (buf[0] == 'E' && buf[1] == '.') | |
12437 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12438 | else | |
12439 | error (_("Failed to configure the trace buffer size.")); | |
12440 | } | |
12441 | ||
12442 | rs->btrace_config.pt.size = conf->pt.size; | |
12443 | } | |
f4abbc16 MM |
12444 | } |
12445 | ||
12446 | /* Read the current thread's btrace configuration from the target and | |
12447 | store it into CONF. */ | |
12448 | ||
12449 | static void | |
12450 | btrace_read_config (struct btrace_config *conf) | |
12451 | { | |
12452 | char *xml; | |
12453 | ||
12454 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12455 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12456 | if (xml != NULL) |
12457 | { | |
12458 | struct cleanup *cleanup; | |
12459 | ||
12460 | cleanup = make_cleanup (xfree, xml); | |
12461 | parse_xml_btrace_conf (conf, xml); | |
12462 | do_cleanups (cleanup); | |
12463 | } | |
12464 | } | |
12465 | ||
9accd112 MM |
12466 | /* Enable branch tracing. */ |
12467 | ||
12468 | static struct btrace_target_info * | |
f4abbc16 MM |
12469 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12470 | const struct btrace_config *conf) | |
9accd112 MM |
12471 | { |
12472 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12473 | struct packet_config *packet = NULL; |
9accd112 MM |
12474 | struct remote_state *rs = get_remote_state (); |
12475 | char *buf = rs->buf; | |
12476 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12477 | ||
b20a6524 MM |
12478 | switch (conf->format) |
12479 | { | |
12480 | case BTRACE_FORMAT_BTS: | |
12481 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12482 | break; | |
12483 | ||
12484 | case BTRACE_FORMAT_PT: | |
12485 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12486 | break; | |
12487 | } | |
12488 | ||
12489 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12490 | error (_("Target does not support branch tracing.")); |
12491 | ||
f4abbc16 MM |
12492 | btrace_sync_conf (conf); |
12493 | ||
9accd112 MM |
12494 | set_general_thread (ptid); |
12495 | ||
12496 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12497 | putpkt (rs->buf); | |
12498 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12499 | ||
12500 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12501 | { | |
12502 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12503 | error (_("Could not enable branch tracing for %s: %s"), | |
12504 | target_pid_to_str (ptid), rs->buf + 2); | |
12505 | else | |
12506 | error (_("Could not enable branch tracing for %s."), | |
12507 | target_pid_to_str (ptid)); | |
12508 | } | |
12509 | ||
8d749320 | 12510 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
12511 | tinfo->ptid = ptid; |
12512 | ||
f4abbc16 MM |
12513 | /* If we fail to read the configuration, we lose some information, but the |
12514 | tracing itself is not impacted. */ | |
492d29ea PA |
12515 | TRY |
12516 | { | |
12517 | btrace_read_config (&tinfo->conf); | |
12518 | } | |
12519 | CATCH (err, RETURN_MASK_ERROR) | |
12520 | { | |
12521 | if (err.message != NULL) | |
12522 | warning ("%s", err.message); | |
12523 | } | |
12524 | END_CATCH | |
f4abbc16 | 12525 | |
9accd112 MM |
12526 | return tinfo; |
12527 | } | |
12528 | ||
12529 | /* Disable branch tracing. */ | |
12530 | ||
12531 | static void | |
25e95349 TT |
12532 | remote_disable_btrace (struct target_ops *self, |
12533 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12534 | { |
12535 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12536 | struct remote_state *rs = get_remote_state (); | |
12537 | char *buf = rs->buf; | |
12538 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12539 | ||
4082afcc | 12540 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12541 | error (_("Target does not support branch tracing.")); |
12542 | ||
12543 | set_general_thread (tinfo->ptid); | |
12544 | ||
12545 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12546 | putpkt (rs->buf); | |
12547 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12548 | ||
12549 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12550 | { | |
12551 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12552 | error (_("Could not disable branch tracing for %s: %s"), | |
12553 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12554 | else | |
12555 | error (_("Could not disable branch tracing for %s."), | |
12556 | target_pid_to_str (tinfo->ptid)); | |
12557 | } | |
12558 | ||
12559 | xfree (tinfo); | |
12560 | } | |
12561 | ||
12562 | /* Teardown branch tracing. */ | |
12563 | ||
12564 | static void | |
1777056d TT |
12565 | remote_teardown_btrace (struct target_ops *self, |
12566 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12567 | { |
12568 | /* We must not talk to the target during teardown. */ | |
12569 | xfree (tinfo); | |
12570 | } | |
12571 | ||
12572 | /* Read the branch trace. */ | |
12573 | ||
969c39fb | 12574 | static enum btrace_error |
39c49f83 | 12575 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12576 | struct btrace_data *btrace, |
969c39fb | 12577 | struct btrace_target_info *tinfo, |
9accd112 MM |
12578 | enum btrace_read_type type) |
12579 | { | |
12580 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12581 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12582 | struct cleanup *cleanup; |
9accd112 MM |
12583 | const char *annex; |
12584 | char *xml; | |
12585 | ||
4082afcc | 12586 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12587 | error (_("Target does not support branch tracing.")); |
12588 | ||
12589 | #if !defined(HAVE_LIBEXPAT) | |
12590 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12591 | #endif | |
12592 | ||
12593 | switch (type) | |
12594 | { | |
864089d2 | 12595 | case BTRACE_READ_ALL: |
9accd112 MM |
12596 | annex = "all"; |
12597 | break; | |
864089d2 | 12598 | case BTRACE_READ_NEW: |
9accd112 MM |
12599 | annex = "new"; |
12600 | break; | |
969c39fb MM |
12601 | case BTRACE_READ_DELTA: |
12602 | annex = "delta"; | |
12603 | break; | |
9accd112 MM |
12604 | default: |
12605 | internal_error (__FILE__, __LINE__, | |
12606 | _("Bad branch tracing read type: %u."), | |
12607 | (unsigned int) type); | |
12608 | } | |
12609 | ||
12610 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12611 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12612 | if (xml == NULL) |
12613 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12614 | |
969c39fb | 12615 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12616 | parse_xml_btrace (btrace, xml); |
969c39fb | 12617 | do_cleanups (cleanup); |
9accd112 | 12618 | |
969c39fb | 12619 | return BTRACE_ERR_NONE; |
9accd112 MM |
12620 | } |
12621 | ||
f4abbc16 MM |
12622 | static const struct btrace_config * |
12623 | remote_btrace_conf (struct target_ops *self, | |
12624 | const struct btrace_target_info *tinfo) | |
12625 | { | |
12626 | return &tinfo->conf; | |
12627 | } | |
12628 | ||
ced63ec0 | 12629 | static int |
5436ff03 | 12630 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12631 | { |
4082afcc PA |
12632 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12633 | == PACKET_ENABLE); | |
ced63ec0 GB |
12634 | } |
12635 | ||
9dd130a0 TT |
12636 | /* Implementation of to_load. */ |
12637 | ||
12638 | static void | |
9cbe5fff | 12639 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12640 | { |
12641 | generic_load (name, from_tty); | |
12642 | } | |
12643 | ||
c78fa86a GB |
12644 | /* Accepts an integer PID; returns a string representing a file that |
12645 | can be opened on the remote side to get the symbols for the child | |
12646 | process. Returns NULL if the operation is not supported. */ | |
12647 | ||
12648 | static char * | |
12649 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12650 | { | |
12651 | static char *filename = NULL; | |
835205d0 GB |
12652 | struct inferior *inf; |
12653 | char *annex = NULL; | |
c78fa86a GB |
12654 | |
12655 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12656 | return NULL; | |
12657 | ||
12658 | if (filename != NULL) | |
12659 | xfree (filename); | |
12660 | ||
835205d0 GB |
12661 | inf = find_inferior_pid (pid); |
12662 | if (inf == NULL) | |
12663 | internal_error (__FILE__, __LINE__, | |
12664 | _("not currently attached to process %d"), pid); | |
12665 | ||
12666 | if (!inf->fake_pid_p) | |
12667 | { | |
12668 | const int annex_size = 9; | |
12669 | ||
224c3ddb | 12670 | annex = (char *) alloca (annex_size); |
835205d0 GB |
12671 | xsnprintf (annex, annex_size, "%x", pid); |
12672 | } | |
12673 | ||
c78fa86a GB |
12674 | filename = target_read_stralloc (¤t_target, |
12675 | TARGET_OBJECT_EXEC_FILE, annex); | |
12676 | ||
12677 | return filename; | |
12678 | } | |
12679 | ||
750ce8d1 YQ |
12680 | /* Implement the to_can_do_single_step target_ops method. */ |
12681 | ||
12682 | static int | |
12683 | remote_can_do_single_step (struct target_ops *ops) | |
12684 | { | |
12685 | /* We can only tell whether target supports single step or not by | |
12686 | supported s and S vCont actions if the stub supports vContSupported | |
12687 | feature. If the stub doesn't support vContSupported feature, | |
12688 | we have conservatively to think target doesn't supports single | |
12689 | step. */ | |
12690 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
12691 | { | |
12692 | struct remote_state *rs = get_remote_state (); | |
12693 | ||
12694 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
12695 | remote_vcont_probe (rs); | |
12696 | ||
12697 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
12698 | } | |
12699 | else | |
12700 | return 0; | |
12701 | } | |
12702 | ||
c906108c | 12703 | static void |
fba45db2 | 12704 | init_remote_ops (void) |
c906108c | 12705 | { |
c5aa993b | 12706 | remote_ops.to_shortname = "remote"; |
c906108c | 12707 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12708 | remote_ops.to_doc = |
c906108c | 12709 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12710 | Specify the serial device it is connected to\n\ |
12711 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12712 | remote_ops.to_open = remote_open; |
12713 | remote_ops.to_close = remote_close; | |
c906108c | 12714 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12715 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12716 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12717 | remote_ops.to_wait = remote_wait; |
12718 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12719 | remote_ops.to_store_registers = remote_store_registers; | |
12720 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12721 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12722 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12723 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12724 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12725 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12726 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12727 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12728 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12729 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12730 | remote_ops.to_watchpoint_addr_within_range = |
12731 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12732 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12733 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12734 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12735 | remote_ops.to_region_ok_for_hw_watchpoint |
12736 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12737 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12738 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12739 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12740 | remote_ops.to_load = remote_load; |
c906108c | 12741 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12742 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12743 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12744 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 12745 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12746 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12747 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12748 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12749 | remote_ops.to_stop = remote_stop; |
bfedc46a | 12750 | remote_ops.to_interrupt = remote_interrupt; |
abc56d60 | 12751 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
4b8a223f | 12752 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12753 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12754 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12755 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12756 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12757 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12758 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12759 | remote_ops.to_has_memory = default_child_has_memory; | |
12760 | remote_ops.to_has_stack = default_child_has_stack; | |
12761 | remote_ops.to_has_registers = default_child_has_registers; | |
12762 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12763 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12764 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12765 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12766 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12767 | remote_ops.to_flash_erase = remote_flash_erase; |
12768 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12769 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12770 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12771 | remote_ops.to_can_async_p = remote_can_async_p; |
12772 | remote_ops.to_is_async_p = remote_is_async_p; | |
12773 | remote_ops.to_async = remote_async; | |
750ce8d1 | 12774 | remote_ops.to_can_do_single_step = remote_can_do_single_step; |
75c99385 PA |
12775 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12776 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12777 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12778 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
12779 | remote_ops.to_supports_disable_randomization |
12780 | = remote_supports_disable_randomization; | |
4bd7dc42 | 12781 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
12782 | remote_ops.to_fileio_open = remote_hostio_open; |
12783 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12784 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 12785 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
12786 | remote_ops.to_fileio_close = remote_hostio_close; |
12787 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 12788 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 12789 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 12790 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 12791 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 12792 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
12793 | remote_ops.to_trace_init = remote_trace_init; |
12794 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 12795 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
12796 | remote_ops.to_download_trace_state_variable |
12797 | = remote_download_trace_state_variable; | |
d248b706 KY |
12798 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12799 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
12800 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12801 | remote_ops.to_trace_start = remote_trace_start; | |
12802 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 12803 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
12804 | remote_ops.to_trace_stop = remote_trace_stop; |
12805 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
12806 | remote_ops.to_get_trace_state_variable_value |
12807 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
12808 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12809 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
12810 | remote_ops.to_upload_trace_state_variables |
12811 | = remote_upload_trace_state_variables; | |
00bf0b85 | 12812 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 12813 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 12814 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 12815 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 12816 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 12817 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 12818 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 12819 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 12820 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 12821 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
12822 | remote_ops.to_static_tracepoint_marker_at |
12823 | = remote_static_tracepoint_marker_at; | |
12824 | remote_ops.to_static_tracepoint_markers_by_strid | |
12825 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 12826 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
12827 | remote_ops.to_use_agent = remote_use_agent; |
12828 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
12829 | remote_ops.to_supports_btrace = remote_supports_btrace; |
12830 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12831 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12832 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12833 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 12834 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
12835 | remote_ops.to_augmented_libraries_svr4_read = |
12836 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
12837 | } |
12838 | ||
12839 | /* Set up the extended remote vector by making a copy of the standard | |
12840 | remote vector and adding to it. */ | |
12841 | ||
12842 | static void | |
fba45db2 | 12843 | init_extended_remote_ops (void) |
c906108c SS |
12844 | { |
12845 | extended_remote_ops = remote_ops; | |
12846 | ||
0f71a2f6 | 12847 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 12848 | extended_remote_ops.to_longname = |
c906108c | 12849 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 12850 | extended_remote_ops.to_doc = |
c906108c | 12851 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
12852 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
12853 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
12854 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
12855 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
12856 | extended_remote_ops.to_detach = extended_remote_detach; |
12857 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 12858 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 12859 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
12860 | extended_remote_ops.to_supports_disable_randomization |
12861 | = extended_remote_supports_disable_randomization; | |
de0d863e | 12862 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
94585166 | 12863 | extended_remote_ops.to_follow_exec = remote_follow_exec; |
cbb8991c DB |
12864 | extended_remote_ops.to_insert_fork_catchpoint |
12865 | = remote_insert_fork_catchpoint; | |
12866 | extended_remote_ops.to_remove_fork_catchpoint | |
12867 | = remote_remove_fork_catchpoint; | |
12868 | extended_remote_ops.to_insert_vfork_catchpoint | |
12869 | = remote_insert_vfork_catchpoint; | |
12870 | extended_remote_ops.to_remove_vfork_catchpoint | |
12871 | = remote_remove_vfork_catchpoint; | |
d46addbb DB |
12872 | extended_remote_ops.to_insert_exec_catchpoint |
12873 | = remote_insert_exec_catchpoint; | |
12874 | extended_remote_ops.to_remove_exec_catchpoint | |
12875 | = remote_remove_exec_catchpoint; | |
0f71a2f6 JM |
12876 | } |
12877 | ||
6426a772 | 12878 | static int |
6a109b6b | 12879 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 12880 | { |
5d93a237 TT |
12881 | struct remote_state *rs = get_remote_state (); |
12882 | ||
c6ebd6cf | 12883 | if (!target_async_permitted) |
75c99385 PA |
12884 | /* We only enable async when the user specifically asks for it. */ |
12885 | return 0; | |
12886 | ||
23860348 | 12887 | /* We're async whenever the serial device is. */ |
5d93a237 | 12888 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
12889 | } |
12890 | ||
12891 | static int | |
6a109b6b | 12892 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 12893 | { |
5d93a237 TT |
12894 | struct remote_state *rs = get_remote_state (); |
12895 | ||
c6ebd6cf | 12896 | if (!target_async_permitted) |
75c99385 PA |
12897 | /* We only enable async when the user specifically asks for it. */ |
12898 | return 0; | |
12899 | ||
23860348 | 12900 | /* We're async whenever the serial device is. */ |
5d93a237 | 12901 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
12902 | } |
12903 | ||
2acceee2 JM |
12904 | /* Pass the SERIAL event on and up to the client. One day this code |
12905 | will be able to delay notifying the client of an event until the | |
23860348 | 12906 | point where an entire packet has been received. */ |
2acceee2 | 12907 | |
2acceee2 JM |
12908 | static serial_event_ftype remote_async_serial_handler; |
12909 | ||
6426a772 | 12910 | static void |
819cc324 | 12911 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 12912 | { |
19ba03f4 | 12913 | struct remote_state *rs = (struct remote_state *) context; |
88b496c3 | 12914 | |
2acceee2 JM |
12915 | /* Don't propogate error information up to the client. Instead let |
12916 | the client find out about the error by querying the target. */ | |
6a3753b3 | 12917 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
12918 | } |
12919 | ||
74531fed PA |
12920 | static void |
12921 | remote_async_inferior_event_handler (gdb_client_data data) | |
12922 | { | |
12923 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12924 | } | |
12925 | ||
2acceee2 | 12926 | static void |
6a3753b3 | 12927 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 12928 | { |
5d93a237 TT |
12929 | struct remote_state *rs = get_remote_state (); |
12930 | ||
6a3753b3 | 12931 | if (enable) |
2acceee2 | 12932 | { |
88b496c3 | 12933 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
12934 | |
12935 | /* If there are pending events in the stop reply queue tell the | |
12936 | event loop to process them. */ | |
12937 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12938 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
12939 | } |
12940 | else | |
b7d2e916 PA |
12941 | { |
12942 | serial_async (rs->remote_desc, NULL, NULL); | |
12943 | clear_async_event_handler (remote_async_inferior_event_token); | |
12944 | } | |
6426a772 JM |
12945 | } |
12946 | ||
5a2468f5 | 12947 | static void |
c2d11a7d | 12948 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 12949 | { |
635c7e8a | 12950 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
12951 | } |
12952 | ||
d471ea57 AC |
12953 | static void |
12954 | show_remote_cmd (char *args, int from_tty) | |
12955 | { | |
37a105a1 | 12956 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 12957 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
12958 | struct cleanup *showlist_chain; |
12959 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12960 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12961 | |
12962 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12963 | for (; list != NULL; list = list->next) | |
12964 | if (strcmp (list->name, "Z-packet") == 0) | |
12965 | continue; | |
427c3a89 DJ |
12966 | else if (list->type == not_set_cmd) |
12967 | /* Alias commands are exactly like the original, except they | |
12968 | don't have the normal type. */ | |
12969 | continue; | |
12970 | else | |
37a105a1 DJ |
12971 | { |
12972 | struct cleanup *option_chain | |
12973 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12974 | |
37a105a1 DJ |
12975 | ui_out_field_string (uiout, "name", list->name); |
12976 | ui_out_text (uiout, ": "); | |
427c3a89 | 12977 | if (list->type == show_cmd) |
5b9afe8a | 12978 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12979 | else |
12980 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12981 | /* Close the tuple. */ |
12982 | do_cleanups (option_chain); | |
12983 | } | |
427c3a89 DJ |
12984 | |
12985 | /* Close the tuple. */ | |
12986 | do_cleanups (showlist_chain); | |
d471ea57 | 12987 | } |
5a2468f5 | 12988 | |
0f71a2f6 | 12989 | |
23860348 | 12990 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12991 | static void |
12992 | remote_new_objfile (struct objfile *objfile) | |
12993 | { | |
5d93a237 TT |
12994 | struct remote_state *rs = get_remote_state (); |
12995 | ||
12996 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12997 | remote_check_symbols (); |
dc8acb97 MS |
12998 | } |
12999 | ||
00bf0b85 SS |
13000 | /* Pull all the tracepoints defined on the target and create local |
13001 | data structures representing them. We don't want to create real | |
13002 | tracepoints yet, we don't want to mess up the user's existing | |
13003 | collection. */ | |
13004 | ||
13005 | static int | |
ab6617cc | 13006 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 13007 | { |
00bf0b85 SS |
13008 | struct remote_state *rs = get_remote_state (); |
13009 | char *p; | |
d5551862 | 13010 | |
00bf0b85 SS |
13011 | /* Ask for a first packet of tracepoint definition. */ |
13012 | putpkt ("qTfP"); | |
13013 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13014 | p = rs->buf; | |
13015 | while (*p && *p != 'l') | |
d5551862 | 13016 | { |
00bf0b85 SS |
13017 | parse_tracepoint_definition (p, utpp); |
13018 | /* Ask for another packet of tracepoint definition. */ | |
13019 | putpkt ("qTsP"); | |
13020 | getpkt (&rs->buf, &rs->buf_size, 0); | |
13021 | p = rs->buf; | |
d5551862 | 13022 | } |
00bf0b85 | 13023 | return 0; |
d5551862 SS |
13024 | } |
13025 | ||
00bf0b85 | 13026 | static int |
181e3713 TT |
13027 | remote_upload_trace_state_variables (struct target_ops *self, |
13028 | struct uploaded_tsv **utsvp) | |
d5551862 | 13029 | { |
00bf0b85 | 13030 | struct remote_state *rs = get_remote_state (); |
d5551862 | 13031 | char *p; |
d5551862 | 13032 | |
00bf0b85 SS |
13033 | /* Ask for a first packet of variable definition. */ |
13034 | putpkt ("qTfV"); | |
d5551862 SS |
13035 | getpkt (&rs->buf, &rs->buf_size, 0); |
13036 | p = rs->buf; | |
00bf0b85 | 13037 | while (*p && *p != 'l') |
d5551862 | 13038 | { |
00bf0b85 SS |
13039 | parse_tsv_definition (p, utsvp); |
13040 | /* Ask for another packet of variable definition. */ | |
13041 | putpkt ("qTsV"); | |
d5551862 SS |
13042 | getpkt (&rs->buf, &rs->buf_size, 0); |
13043 | p = rs->buf; | |
13044 | } | |
00bf0b85 | 13045 | return 0; |
d5551862 SS |
13046 | } |
13047 | ||
c1e36e3e PA |
13048 | /* The "set/show range-stepping" show hook. */ |
13049 | ||
13050 | static void | |
13051 | show_range_stepping (struct ui_file *file, int from_tty, | |
13052 | struct cmd_list_element *c, | |
13053 | const char *value) | |
13054 | { | |
13055 | fprintf_filtered (file, | |
13056 | _("Debugger's willingness to use range stepping " | |
13057 | "is %s.\n"), value); | |
13058 | } | |
13059 | ||
13060 | /* The "set/show range-stepping" set hook. */ | |
13061 | ||
13062 | static void | |
13063 | set_range_stepping (char *ignore_args, int from_tty, | |
13064 | struct cmd_list_element *c) | |
13065 | { | |
5d93a237 TT |
13066 | struct remote_state *rs = get_remote_state (); |
13067 | ||
c1e36e3e PA |
13068 | /* Whene enabling, check whether range stepping is actually |
13069 | supported by the target, and warn if not. */ | |
13070 | if (use_range_stepping) | |
13071 | { | |
5d93a237 | 13072 | if (rs->remote_desc != NULL) |
c1e36e3e | 13073 | { |
4082afcc | 13074 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
13075 | remote_vcont_probe (rs); |
13076 | ||
4082afcc | 13077 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
13078 | && rs->supports_vCont.r) |
13079 | return; | |
13080 | } | |
13081 | ||
13082 | warning (_("Range stepping is not supported by the current target")); | |
13083 | } | |
13084 | } | |
13085 | ||
c906108c | 13086 | void |
fba45db2 | 13087 | _initialize_remote (void) |
c906108c | 13088 | { |
ea9c271d | 13089 | struct remote_state *rs; |
9a7071a8 | 13090 | struct cmd_list_element *cmd; |
6f937416 | 13091 | const char *cmd_name; |
ea9c271d | 13092 | |
0f71a2f6 | 13093 | /* architecture specific data */ |
2bc416ba | 13094 | remote_gdbarch_data_handle = |
23860348 | 13095 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
13096 | remote_g_packet_data_handle = |
13097 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 13098 | |
94585166 DB |
13099 | remote_pspace_data |
13100 | = register_program_space_data_with_cleanup (NULL, | |
13101 | remote_pspace_data_cleanup); | |
13102 | ||
ea9c271d DJ |
13103 | /* Initialize the per-target state. At the moment there is only one |
13104 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
13105 | time. */ |
13106 | remote_state = new_remote_state (); | |
ea9c271d | 13107 | |
c906108c SS |
13108 | init_remote_ops (); |
13109 | add_target (&remote_ops); | |
13110 | ||
13111 | init_extended_remote_ops (); | |
13112 | add_target (&extended_remote_ops); | |
cce74817 | 13113 | |
dc8acb97 | 13114 | /* Hook into new objfile notification. */ |
06d3b283 | 13115 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
13116 | /* We're no longer interested in notification events of an inferior |
13117 | when it exits. */ | |
13118 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 13119 | |
b803fb0f | 13120 | /* Set up signal handlers. */ |
934b9bac | 13121 | async_sigint_remote_token = |
b803fb0f | 13122 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 13123 | async_sigint_remote_twice_token = |
6d549500 | 13124 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 13125 | |
c906108c SS |
13126 | #if 0 |
13127 | init_remote_threadtests (); | |
13128 | #endif | |
13129 | ||
722247f1 | 13130 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 13131 | /* set/show remote ... */ |
d471ea57 | 13132 | |
1bedd215 | 13133 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
13134 | Remote protocol specific variables\n\ |
13135 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13136 | the packets being used"), |
cff3e48b | 13137 | &remote_set_cmdlist, "set remote ", |
23860348 | 13138 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 13139 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
13140 | Remote protocol specific variables\n\ |
13141 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 13142 | the packets being used"), |
cff3e48b | 13143 | &remote_show_cmdlist, "show remote ", |
23860348 | 13144 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 13145 | |
1a966eab AC |
13146 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
13147 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
13148 | Argument is a single section name (default: all loaded sections).\n\ |
13149 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
13150 | &cmdlist); |
13151 | ||
1a966eab AC |
13152 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
13153 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
13154 | maintenance packet TEXT\n\ |
13155 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
13156 | this command sends the string TEXT to the inferior, and displays the\n\ | |
13157 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 13158 | terminating `#' character and checksum."), |
c906108c SS |
13159 | &maintenancelist); |
13160 | ||
7915a72c AC |
13161 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
13162 | Set whether to send break if interrupted."), _("\ | |
13163 | Show whether to send break if interrupted."), _("\ | |
13164 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 13165 | set_remotebreak, show_remotebreak, |
e707bbc2 | 13166 | &setlist, &showlist); |
9a7071a8 JB |
13167 | cmd_name = "remotebreak"; |
13168 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
13169 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
13170 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
13171 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
13172 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
13173 | ||
13174 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
13175 | interrupt_sequence_modes, &interrupt_sequence_mode, |
13176 | _("\ | |
9a7071a8 JB |
13177 | Set interrupt sequence to remote target."), _("\ |
13178 | Show interrupt sequence to remote target."), _("\ | |
13179 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
13180 | NULL, show_interrupt_sequence, | |
13181 | &remote_set_cmdlist, | |
13182 | &remote_show_cmdlist); | |
13183 | ||
13184 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
13185 | &interrupt_on_connect, _("\ | |
13186 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13187 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
13188 | If set, interrupt sequence is sent to remote target."), | |
13189 | NULL, NULL, | |
13190 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 13191 | |
23860348 | 13192 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 13193 | |
1a966eab AC |
13194 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
13195 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 13196 | &setlist); |
1a966eab AC |
13197 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
13198 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
13199 | &showlist); |
13200 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
13201 | set_memory_write_packet_size, _("\ |
13202 | Set the maximum number of bytes per memory-write packet.\n\ | |
13203 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13204 | default packet size. The actual limit is further reduced\n\ | |
13205 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13206 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13207 | &remote_set_cmdlist); |
13208 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
13209 | set_memory_read_packet_size, _("\ |
13210 | Set the maximum number of bytes per memory-read packet.\n\ | |
13211 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
13212 | default packet size. The actual limit is further reduced\n\ | |
13213 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
13214 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
13215 | &remote_set_cmdlist); |
13216 | add_cmd ("memory-write-packet-size", no_class, | |
13217 | show_memory_write_packet_size, | |
1a966eab | 13218 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
13219 | &remote_show_cmdlist); |
13220 | add_cmd ("memory-read-packet-size", no_class, | |
13221 | show_memory_read_packet_size, | |
1a966eab | 13222 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 13223 | &remote_show_cmdlist); |
c906108c | 13224 | |
b3f42336 | 13225 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
13226 | &remote_hw_watchpoint_limit, _("\ |
13227 | Set the maximum number of target hardware watchpoints."), _("\ | |
13228 | Show the maximum number of target hardware watchpoints."), _("\ | |
13229 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13230 | NULL, NULL, /* FIXME: i18n: The maximum |
13231 | number of target hardware | |
13232 | watchpoints is %s. */ | |
b3f42336 | 13233 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
13234 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
13235 | &remote_hw_watchpoint_length_limit, _("\ | |
13236 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13237 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
13238 | Specify a negative limit for unlimited."), | |
13239 | NULL, NULL, /* FIXME: i18n: The maximum | |
13240 | length (in bytes) of a target | |
13241 | hardware watchpoint is %s. */ | |
13242 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 13243 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
13244 | &remote_hw_breakpoint_limit, _("\ |
13245 | Set the maximum number of target hardware breakpoints."), _("\ | |
13246 | Show the maximum number of target hardware breakpoints."), _("\ | |
13247 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
13248 | NULL, NULL, /* FIXME: i18n: The maximum |
13249 | number of target hardware | |
13250 | breakpoints is %s. */ | |
b3f42336 | 13251 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 13252 | |
1b493192 PA |
13253 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
13254 | &remote_address_size, _("\ | |
4d28ad1e AC |
13255 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
13256 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
13257 | NULL, |
13258 | NULL, /* FIXME: i18n: */ | |
13259 | &setlist, &showlist); | |
c906108c | 13260 | |
ca4f7f8b PA |
13261 | init_all_packet_configs (); |
13262 | ||
444abaca | 13263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 13264 | "X", "binary-download", 1); |
0f71a2f6 | 13265 | |
444abaca | 13266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 13267 | "vCont", "verbose-resume", 0); |
506fb367 | 13268 | |
89be2091 DJ |
13269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
13270 | "QPassSignals", "pass-signals", 0); | |
13271 | ||
9b224c5e PA |
13272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
13273 | "QProgramSignals", "program-signals", 0); | |
13274 | ||
444abaca | 13275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 13276 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 13277 | |
444abaca | 13278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 13279 | "P", "set-register", 1); |
d471ea57 | 13280 | |
444abaca | 13281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 13282 | "p", "fetch-register", 1); |
b96ec7ac | 13283 | |
444abaca | 13284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 13285 | "Z0", "software-breakpoint", 0); |
d471ea57 | 13286 | |
444abaca | 13287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 13288 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 13289 | |
444abaca | 13290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 13291 | "Z2", "write-watchpoint", 0); |
d471ea57 | 13292 | |
444abaca | 13293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 13294 | "Z3", "read-watchpoint", 0); |
d471ea57 | 13295 | |
444abaca | 13296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 13297 | "Z4", "access-watchpoint", 0); |
d471ea57 | 13298 | |
0876f84a DJ |
13299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
13300 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 13301 | |
c78fa86a GB |
13302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
13303 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
13304 | ||
23181151 DJ |
13305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
13306 | "qXfer:features:read", "target-features", 0); | |
13307 | ||
cfa9d6d9 DJ |
13308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
13309 | "qXfer:libraries:read", "library-info", 0); | |
13310 | ||
2268b414 JK |
13311 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
13312 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
13313 | ||
fd79ecee DJ |
13314 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
13315 | "qXfer:memory-map:read", "memory-map", 0); | |
13316 | ||
0e7f50da UW |
13317 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
13318 | "qXfer:spu:read", "read-spu-object", 0); | |
13319 | ||
13320 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
13321 | "qXfer:spu:write", "write-spu-object", 0); | |
13322 | ||
07e059b5 VP |
13323 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
13324 | "qXfer:osdata:read", "osdata", 0); | |
13325 | ||
dc146f7c VP |
13326 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
13327 | "qXfer:threads:read", "threads", 0); | |
13328 | ||
4aa995e1 PA |
13329 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
13330 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
13331 | ||
13332 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
13333 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
13334 | ||
b3b9301e PA |
13335 | add_packet_config_cmd |
13336 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 13337 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 13338 | |
169081d0 TG |
13339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13340 | "qXfer:uib:read", "unwind-info-block", 0); | |
13341 | ||
444abaca | 13342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 13343 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
13344 | 0); |
13345 | ||
711e434b PM |
13346 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13347 | "qGetTIBAddr", "get-thread-information-block-address", | |
13348 | 0); | |
13349 | ||
40ab02ce MS |
13350 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13351 | "bc", "reverse-continue", 0); | |
13352 | ||
13353 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13354 | "bs", "reverse-step", 0); | |
13355 | ||
be2a5f71 DJ |
13356 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
13357 | "qSupported", "supported-packets", 0); | |
13358 | ||
08388c79 DE |
13359 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
13360 | "qSearch:memory", "search-memory", 0); | |
13361 | ||
bd3eecc3 PA |
13362 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13363 | "qTStatus", "trace-status", 0); | |
13364 | ||
15a201c8 GB |
13365 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
13366 | "vFile:setfs", "hostio-setfs", 0); | |
13367 | ||
a6b151f1 DJ |
13368 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13369 | "vFile:open", "hostio-open", 0); | |
13370 | ||
13371 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13372 | "vFile:pread", "hostio-pread", 0); | |
13373 | ||
13374 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13375 | "vFile:pwrite", "hostio-pwrite", 0); | |
13376 | ||
13377 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13378 | "vFile:close", "hostio-close", 0); | |
13379 | ||
13380 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13381 | "vFile:unlink", "hostio-unlink", 0); | |
13382 | ||
b9e7b9c3 UW |
13383 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13384 | "vFile:readlink", "hostio-readlink", 0); | |
13385 | ||
0a93529c GB |
13386 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13387 | "vFile:fstat", "hostio-fstat", 0); | |
13388 | ||
2d717e4f DJ |
13389 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13390 | "vAttach", "attach", 0); | |
13391 | ||
13392 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13393 | "vRun", "run", 0); | |
13394 | ||
a6f3e723 SL |
13395 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
13396 | "QStartNoAckMode", "noack", 0); | |
13397 | ||
82f73884 PA |
13398 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
13399 | "vKill", "kill", 0); | |
13400 | ||
0b16c5cf PA |
13401 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
13402 | "qAttached", "query-attached", 0); | |
13403 | ||
782b2b07 | 13404 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
13405 | "ConditionalTracepoints", |
13406 | "conditional-tracepoints", 0); | |
3788aec7 LM |
13407 | |
13408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13409 | "ConditionalBreakpoints", | |
13410 | "conditional-breakpoints", 0); | |
13411 | ||
d3ce09f5 SS |
13412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
13413 | "BreakpointCommands", | |
13414 | "breakpoint-commands", 0); | |
13415 | ||
7a697b8d SS |
13416 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13417 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 13418 | |
409873ef SS |
13419 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
13420 | "TracepointSource", "TracepointSource", 0); | |
13421 | ||
d914c394 SS |
13422 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
13423 | "QAllow", "allow", 0); | |
13424 | ||
0fb4aa4b PA |
13425 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
13426 | "StaticTracepoints", "static-tracepoints", 0); | |
13427 | ||
1e4d1764 YQ |
13428 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13429 | "InstallInTrace", "install-in-trace", 0); | |
13430 | ||
0fb4aa4b PA |
13431 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13432 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
13433 | ||
78d85199 YQ |
13434 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13435 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13436 | ||
03583c20 UW |
13437 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
13438 | "QDisableRandomization", "disable-randomization", 0); | |
13439 | ||
d1feda86 YQ |
13440 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13441 | "QAgent", "agent", 0); | |
13442 | ||
f6f899bf HAQ |
13443 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
13444 | "QTBuffer:size", "trace-buffer-size", 0); | |
13445 | ||
9accd112 MM |
13446 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
13447 | "Qbtrace:off", "disable-btrace", 0); | |
13448 | ||
13449 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13450 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13451 | ||
13452 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13453 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13454 | |
13455 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13456 | "qXfer:btrace", "read-btrace", 0); | |
13457 | ||
f4abbc16 MM |
13458 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13459 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13460 | ||
d33501a5 MM |
13461 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13462 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13463 | ||
73b8c1fd PA |
13464 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
13465 | "multiprocess-feature", "multiprocess-feature", 0); | |
13466 | ||
f7e6eed5 PA |
13467 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13468 | "swbreak-feature", "swbreak-feature", 0); | |
13469 | ||
13470 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13471 | "hwbreak-feature", "hwbreak-feature", 0); | |
13472 | ||
89245bc0 DB |
13473 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13474 | "fork-event-feature", "fork-event-feature", 0); | |
13475 | ||
13476 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13477 | "vfork-event-feature", "vfork-event-feature", 0); | |
13478 | ||
b20a6524 MM |
13479 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13480 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13481 | ||
750ce8d1 YQ |
13482 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
13483 | "vContSupported", "verbose-resume-supported", 0); | |
13484 | ||
94585166 DB |
13485 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
13486 | "exec-event-feature", "exec-event-feature", 0); | |
13487 | ||
0b736949 DB |
13488 | /* Assert that we've registered "set remote foo-packet" commands |
13489 | for all packet configs. */ | |
ca4f7f8b PA |
13490 | { |
13491 | int i; | |
13492 | ||
13493 | for (i = 0; i < PACKET_MAX; i++) | |
13494 | { | |
13495 | /* Ideally all configs would have a command associated. Some | |
13496 | still don't though. */ | |
13497 | int excepted; | |
13498 | ||
13499 | switch (i) | |
13500 | { | |
13501 | case PACKET_QNonStop: | |
ca4f7f8b PA |
13502 | case PACKET_EnableDisableTracepoints_feature: |
13503 | case PACKET_tracenz_feature: | |
13504 | case PACKET_DisconnectedTracing_feature: | |
13505 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13506 | case PACKET_qCRC: |
13507 | /* Additions to this list need to be well justified: | |
13508 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13509 | excepted = 1; |
13510 | break; | |
13511 | default: | |
13512 | excepted = 0; | |
13513 | break; | |
13514 | } | |
13515 | ||
13516 | /* This catches both forgetting to add a config command, and | |
13517 | forgetting to remove a packet from the exception list. */ | |
13518 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13519 | } | |
13520 | } | |
13521 | ||
37a105a1 DJ |
13522 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13523 | Z sub-packet has its own set and show commands, but users may | |
13524 | have sets to this variable in their .gdbinit files (or in their | |
13525 | documentation). */ | |
e9e68a56 | 13526 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13527 | &remote_Z_packet_detect, _("\ |
13528 | Set use of remote protocol `Z' packets"), _("\ | |
13529 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13530 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13531 | packets."), |
e9e68a56 | 13532 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13533 | show_remote_protocol_Z_packet_cmd, |
13534 | /* FIXME: i18n: Use of remote protocol | |
13535 | `Z' packets is %s. */ | |
e9e68a56 | 13536 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13537 | |
a6b151f1 DJ |
13538 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13539 | Manipulate files on the remote system\n\ | |
13540 | Transfer files to and from the remote target system."), | |
13541 | &remote_cmdlist, "remote ", | |
13542 | 0 /* allow-unknown */, &cmdlist); | |
13543 | ||
13544 | add_cmd ("put", class_files, remote_put_command, | |
13545 | _("Copy a local file to the remote system."), | |
13546 | &remote_cmdlist); | |
13547 | ||
13548 | add_cmd ("get", class_files, remote_get_command, | |
13549 | _("Copy a remote file to the local system."), | |
13550 | &remote_cmdlist); | |
13551 | ||
13552 | add_cmd ("delete", class_files, remote_delete_command, | |
13553 | _("Delete a remote file."), | |
13554 | &remote_cmdlist); | |
13555 | ||
2d717e4f | 13556 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 13557 | &remote_exec_file_var, _("\ |
2d717e4f | 13558 | Set the remote pathname for \"run\""), _("\ |
94585166 DB |
13559 | Show the remote pathname for \"run\""), NULL, |
13560 | set_remote_exec_file, | |
13561 | show_remote_exec_file, | |
13562 | &remote_set_cmdlist, | |
13563 | &remote_show_cmdlist); | |
2d717e4f | 13564 | |
c1e36e3e PA |
13565 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13566 | &use_range_stepping, _("\ | |
13567 | Enable or disable range stepping."), _("\ | |
13568 | Show whether target-assisted range stepping is enabled."), _("\ | |
13569 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13570 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13571 | of issuing multiple single-steps. This speeds up source level\n\ | |
13572 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13573 | stepping is supported by the target. The default is on."), | |
13574 | set_range_stepping, | |
13575 | show_range_stepping, | |
13576 | &setlist, | |
13577 | &showlist); | |
13578 | ||
449092f6 CV |
13579 | /* Eventually initialize fileio. See fileio.c */ |
13580 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13581 | |
ba348170 | 13582 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13583 | special ptids with it set to != 0. */ |
ba348170 PA |
13584 | magic_null_ptid = ptid_build (42000, -1, 1); |
13585 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13586 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13587 | |
13588 | target_buf_size = 2048; | |
224c3ddb | 13589 | target_buf = (char *) xmalloc (target_buf_size); |
c906108c | 13590 | } |
10760264 | 13591 |