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" |
c906108c | 47 | |
9846de1b | 48 | #include <sys/time.h> |
c906108c | 49 | |
43ff13b4 | 50 | #include "event-loop.h" |
c2c6d25f | 51 | #include "event-top.h" |
2acceee2 | 52 | #include "inf-loop.h" |
43ff13b4 | 53 | |
c906108c SS |
54 | #include <signal.h> |
55 | #include "serial.h" | |
56 | ||
6240bebf MS |
57 | #include "gdbcore.h" /* for exec_bfd */ |
58 | ||
449092f6 | 59 | #include "remote-fileio.h" |
a6b151f1 | 60 | #include "gdb/fileio.h" |
53ce3c39 | 61 | #include <sys/stat.h> |
dc146f7c | 62 | #include "xml-support.h" |
449092f6 | 63 | |
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
35b1e5cc SS |
66 | #include "tracepoint.h" |
67 | #include "ax.h" | |
68 | #include "ax-gdb.h" | |
d1feda86 | 69 | #include "agent.h" |
9accd112 | 70 | #include "btrace.h" |
35b1e5cc | 71 | |
0df8b418 | 72 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
73 | static char *target_buf; |
74 | static long target_buf_size; | |
35b1e5cc | 75 | |
6765f3e5 DJ |
76 | /* The size to align memory write packets, when practical. The protocol |
77 | does not guarantee any alignment, and gdb will generate short | |
78 | writes and unaligned writes, but even as a best-effort attempt this | |
79 | can improve bulk transfers. For instance, if a write is misaligned | |
80 | relative to the target's data bus, the stub may need to make an extra | |
81 | round trip fetching data from the target. This doesn't make a | |
82 | huge difference, but it's easy to do, so we try to be helpful. | |
83 | ||
84 | The alignment chosen is arbitrary; usually data bus width is | |
85 | important here, not the possibly larger cache line size. */ | |
86 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
87 | ||
23860348 | 88 | /* Prototypes for local functions. */ |
934b9bac | 89 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 90 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 91 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 92 | int forever, int *is_notif); |
6426a772 | 93 | |
934b9bac JK |
94 | static void async_handle_remote_sigint (int); |
95 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 96 | |
a14ed312 | 97 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 98 | |
f32dbf8c MM |
99 | static void remote_prepare_to_store (struct target_ops *self, |
100 | struct regcache *regcache); | |
c906108c | 101 | |
014f9477 TT |
102 | static void remote_open_1 (const char *, int, struct target_ops *, |
103 | int extended_p); | |
c906108c | 104 | |
de90e03d | 105 | static void remote_close (struct target_ops *self); |
c906108c | 106 | |
136d6dae | 107 | static void remote_mourn (struct target_ops *ops); |
c906108c | 108 | |
a14ed312 | 109 | static void extended_remote_restart (void); |
c906108c | 110 | |
136d6dae | 111 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 112 | |
a14ed312 | 113 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 114 | |
6d820c5c | 115 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 116 | |
a14ed312 | 117 | static int readchar (int timeout); |
c906108c | 118 | |
c33e31fd PA |
119 | static void remote_serial_write (const char *str, int len); |
120 | ||
7d85a9c0 | 121 | static void remote_kill (struct target_ops *ops); |
c906108c | 122 | |
6a109b6b | 123 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 124 | |
6a109b6b | 125 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 126 | |
6a3753b3 | 127 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 128 | |
934b9bac | 129 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 130 | |
a14ed312 | 131 | static void interrupt_query (void); |
c906108c | 132 | |
79d7f229 PA |
133 | static void set_general_thread (struct ptid ptid); |
134 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 135 | |
a14ed312 | 136 | static void get_offsets (void); |
c906108c | 137 | |
6d820c5c DJ |
138 | static void skip_frame (void); |
139 | ||
140 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 141 | |
a14ed312 | 142 | static int hexnumlen (ULONGEST num); |
c906108c | 143 | |
a14ed312 | 144 | static void init_remote_ops (void); |
c906108c | 145 | |
a14ed312 | 146 | static void init_extended_remote_ops (void); |
c906108c | 147 | |
1eab8a48 | 148 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 149 | |
a14ed312 | 150 | static int stubhex (int ch); |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumstr (char *, ULONGEST); |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 155 | |
a14ed312 | 156 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 157 | |
baa336ce | 158 | static void print_packet (const char *); |
c906108c | 159 | |
a14ed312 | 160 | static void compare_sections_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void packet_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 165 | |
39f77062 | 166 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 167 | |
baa336ce | 168 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 169 | |
a14ed312 | 170 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 171 | |
5a2468f5 | 172 | struct packet_config; |
5a2468f5 | 173 | |
a14ed312 | 174 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 175 | |
bb572ddd DJ |
176 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
177 | int from_tty, | |
178 | struct cmd_list_element *c, | |
179 | const char *value); | |
180 | ||
82f73884 PA |
181 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
182 | static ptid_t read_ptid (char *buf, char **obuf); | |
183 | ||
c378d69d | 184 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 185 | |
d5551862 | 186 | struct remote_state; |
8bd200f1 TT |
187 | static int remote_get_trace_status (struct target_ops *self, |
188 | struct trace_status *ts); | |
d5551862 | 189 | |
ab6617cc TT |
190 | static int remote_upload_tracepoints (struct target_ops *self, |
191 | struct uploaded_tp **utpp); | |
00bf0b85 | 192 | |
181e3713 TT |
193 | static int remote_upload_trace_state_variables (struct target_ops *self, |
194 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 195 | |
c8d104ad PA |
196 | static void remote_query_supported (void); |
197 | ||
36d25514 | 198 | static void remote_check_symbols (void); |
c8d104ad | 199 | |
a14ed312 | 200 | void _initialize_remote (void); |
c906108c | 201 | |
74531fed | 202 | struct stop_reply; |
74531fed | 203 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 204 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 205 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 206 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
207 | static int peek_stop_reply (ptid_t ptid); |
208 | ||
209 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 210 | |
e3594fd1 | 211 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 212 | |
d962ef82 DJ |
213 | static int remote_read_description_p (struct target_ops *target); |
214 | ||
176a6961 | 215 | static void remote_console_output (char *msg); |
dde08ee1 | 216 | |
efcc2da7 | 217 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 218 | |
78eff0ec | 219 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 220 | |
f4abbc16 MM |
221 | static void remote_btrace_reset (void); |
222 | ||
a6b151f1 DJ |
223 | /* For "remote". */ |
224 | ||
225 | static struct cmd_list_element *remote_cmdlist; | |
226 | ||
bb572ddd DJ |
227 | /* For "set remote" and "show remote". */ |
228 | ||
229 | static struct cmd_list_element *remote_set_cmdlist; | |
230 | static struct cmd_list_element *remote_show_cmdlist; | |
231 | ||
d458bd84 PA |
232 | /* Stub vCont actions support. |
233 | ||
234 | Each field is a boolean flag indicating whether the stub reports | |
235 | support for the corresponding action. */ | |
236 | ||
237 | struct vCont_action_support | |
238 | { | |
239 | /* vCont;t */ | |
240 | int t; | |
c1e36e3e PA |
241 | |
242 | /* vCont;r */ | |
243 | int r; | |
d458bd84 PA |
244 | }; |
245 | ||
c1e36e3e PA |
246 | /* Controls whether GDB is willing to use range stepping. */ |
247 | ||
248 | static int use_range_stepping = 1; | |
249 | ||
0d031856 TT |
250 | #define OPAQUETHREADBYTES 8 |
251 | ||
252 | /* a 64 bit opaque identifier */ | |
253 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
254 | ||
255 | /* About this many threadisds fit in a packet. */ | |
256 | ||
257 | #define MAXTHREADLISTRESULTS 32 | |
258 | ||
ea9c271d DJ |
259 | /* Description of the remote protocol state for the currently |
260 | connected target. This is per-target state, and independent of the | |
261 | selected architecture. */ | |
262 | ||
263 | struct remote_state | |
264 | { | |
265 | /* A buffer to use for incoming packets, and its current size. The | |
266 | buffer is grown dynamically for larger incoming packets. | |
267 | Outgoing packets may also be constructed in this buffer. | |
268 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
269 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
270 | packets. */ | |
271 | char *buf; | |
272 | long buf_size; | |
be2a5f71 | 273 | |
1e51243a PA |
274 | /* True if we're going through initial connection setup (finding out |
275 | about the remote side's threads, relocating symbols, etc.). */ | |
276 | int starting_up; | |
277 | ||
be2a5f71 DJ |
278 | /* If we negotiated packet size explicitly (and thus can bypass |
279 | heuristics for the largest packet size that will not overflow | |
280 | a buffer in the stub), this will be set to that packet size. | |
281 | Otherwise zero, meaning to use the guessed size. */ | |
282 | long explicit_packet_size; | |
2d717e4f DJ |
283 | |
284 | /* remote_wait is normally called when the target is running and | |
285 | waits for a stop reply packet. But sometimes we need to call it | |
286 | when the target is already stopped. We can send a "?" packet | |
287 | and have remote_wait read the response. Or, if we already have | |
288 | the response, we can stash it in BUF and tell remote_wait to | |
289 | skip calling getpkt. This flag is set when BUF contains a | |
290 | stop reply packet and the target is not waiting. */ | |
291 | int cached_wait_status; | |
a6f3e723 SL |
292 | |
293 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
294 | expect acks from each other. The connection is assumed to be | |
295 | reliable. */ | |
296 | int noack_mode; | |
82f73884 PA |
297 | |
298 | /* True if we're connected in extended remote mode. */ | |
299 | int extended; | |
300 | ||
e24a49d8 PA |
301 | /* True if we resumed the target and we're waiting for the target to |
302 | stop. In the mean time, we can't start another command/query. | |
303 | The remote server wouldn't be ready to process it, so we'd | |
304 | timeout waiting for a reply that would never come and eventually | |
305 | we'd close the connection. This can happen in asynchronous mode | |
306 | because we allow GDB commands while the target is running. */ | |
307 | int waiting_for_stop_reply; | |
74531fed | 308 | |
d458bd84 PA |
309 | /* The status of the stub support for the various vCont actions. */ |
310 | struct vCont_action_support supports_vCont; | |
782b2b07 | 311 | |
3a29589a DJ |
312 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
313 | responded to that. */ | |
314 | int ctrlc_pending_p; | |
5d93a237 TT |
315 | |
316 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
317 | remote_open knows that we don't have a file open when the program | |
318 | starts. */ | |
319 | struct serial *remote_desc; | |
47f8a51d TT |
320 | |
321 | /* These are the threads which we last sent to the remote system. The | |
322 | TID member will be -1 for all or -2 for not sent yet. */ | |
323 | ptid_t general_thread; | |
324 | ptid_t continue_thread; | |
262e1174 TT |
325 | |
326 | /* This is the traceframe which we last selected on the remote system. | |
327 | It will be -1 if no traceframe is selected. */ | |
328 | int remote_traceframe_number; | |
747dc59d TT |
329 | |
330 | char *last_pass_packet; | |
5e4a05c4 TT |
331 | |
332 | /* The last QProgramSignals packet sent to the target. We bypass | |
333 | sending a new program signals list down to the target if the new | |
334 | packet is exactly the same as the last we sent. IOW, we only let | |
335 | the target know about program signals list changes. */ | |
336 | char *last_program_signals_packet; | |
b73be471 TT |
337 | |
338 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
339 | |
340 | int last_sent_step; | |
8e88304f TT |
341 | |
342 | char *finished_object; | |
343 | char *finished_annex; | |
344 | ULONGEST finished_offset; | |
b80fafe3 TT |
345 | |
346 | /* Should we try the 'ThreadInfo' query packet? | |
347 | ||
348 | This variable (NOT available to the user: auto-detect only!) | |
349 | determines whether GDB will use the new, simpler "ThreadInfo" | |
350 | query or the older, more complex syntax for thread queries. | |
351 | This is an auto-detect variable (set to true at each connect, | |
352 | and set to false when the target fails to recognize it). */ | |
353 | int use_threadinfo_query; | |
354 | int use_threadextra_query; | |
88b496c3 | 355 | |
ee154bee TT |
356 | /* This is set to the data address of the access causing the target |
357 | to stop for a watchpoint. */ | |
358 | CORE_ADDR remote_watch_data_address; | |
359 | ||
f7e6eed5 PA |
360 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
361 | enum target_stop_reason stop_reason; | |
0d031856 TT |
362 | |
363 | threadref echo_nextthread; | |
364 | threadref nextthread; | |
365 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
366 | |
367 | /* The state of remote notification. */ | |
368 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
369 | |
370 | /* The branch trace configuration. */ | |
371 | struct btrace_config btrace_config; | |
ea9c271d DJ |
372 | }; |
373 | ||
dc146f7c VP |
374 | /* Private data that we'll store in (struct thread_info)->private. */ |
375 | struct private_thread_info | |
376 | { | |
377 | char *extra; | |
378 | int core; | |
379 | }; | |
380 | ||
381 | static void | |
382 | free_private_thread_info (struct private_thread_info *info) | |
383 | { | |
384 | xfree (info->extra); | |
385 | xfree (info); | |
386 | } | |
387 | ||
ea9c271d DJ |
388 | /* This data could be associated with a target, but we do not always |
389 | have access to the current target when we need it, so for now it is | |
390 | static. This will be fine for as long as only one target is in use | |
391 | at a time. */ | |
cf792862 | 392 | static struct remote_state *remote_state; |
ea9c271d DJ |
393 | |
394 | static struct remote_state * | |
0b83947e | 395 | get_remote_state_raw (void) |
ea9c271d | 396 | { |
cf792862 TT |
397 | return remote_state; |
398 | } | |
399 | ||
400 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
401 | return it. */ | |
402 | ||
403 | static struct remote_state * | |
404 | new_remote_state (void) | |
405 | { | |
406 | struct remote_state *result = XCNEW (struct remote_state); | |
407 | ||
408 | /* The default buffer size is unimportant; it will be expanded | |
409 | whenever a larger buffer is needed. */ | |
410 | result->buf_size = 400; | |
411 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 412 | result->remote_traceframe_number = -1; |
b73be471 | 413 | result->last_sent_signal = GDB_SIGNAL_0; |
cf792862 TT |
414 | |
415 | return result; | |
ea9c271d DJ |
416 | } |
417 | ||
418 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 419 | |
ad10f812 AC |
420 | struct packet_reg |
421 | { | |
422 | long offset; /* Offset into G packet. */ | |
423 | long regnum; /* GDB's internal register number. */ | |
424 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 425 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 426 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 427 | at present. */ |
f5656ead | 428 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 429 | at present. */ |
ad10f812 AC |
430 | }; |
431 | ||
ea9c271d | 432 | struct remote_arch_state |
d01949b6 | 433 | { |
ad10f812 AC |
434 | /* Description of the remote protocol registers. */ |
435 | long sizeof_g_packet; | |
b323314b AC |
436 | |
437 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 438 | (making an array gdbarch_num_regs in size). */ |
b323314b | 439 | struct packet_reg *regs; |
ad10f812 | 440 | |
d01949b6 AC |
441 | /* This is the size (in chars) of the first response to the ``g'' |
442 | packet. It is used as a heuristic when determining the maximum | |
443 | size of memory-read and memory-write packets. A target will | |
444 | typically only reserve a buffer large enough to hold the ``g'' | |
445 | packet. The size does not include packet overhead (headers and | |
23860348 | 446 | trailers). */ |
d01949b6 AC |
447 | long actual_register_packet_size; |
448 | ||
449 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 450 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
451 | long remote_packet_size; |
452 | }; | |
453 | ||
35b1e5cc SS |
454 | /* Utility: generate error from an incoming stub packet. */ |
455 | static void | |
456 | trace_error (char *buf) | |
457 | { | |
458 | if (*buf++ != 'E') | |
459 | return; /* not an error msg */ | |
460 | switch (*buf) | |
461 | { | |
462 | case '1': /* malformed packet error */ | |
463 | if (*++buf == '0') /* general case: */ | |
464 | error (_("remote.c: error in outgoing packet.")); | |
465 | else | |
466 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
467 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
468 | default: |
469 | error (_("Target returns error code '%s'."), buf); | |
470 | } | |
471 | } | |
472 | ||
473 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
474 | static char * | |
475 | remote_get_noisy_reply (char **buf_p, | |
476 | long *sizeof_buf) | |
477 | { | |
478 | do /* Loop on reply from remote stub. */ | |
479 | { | |
480 | char *buf; | |
a744cf53 | 481 | |
0df8b418 | 482 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
483 | getpkt (buf_p, sizeof_buf, 0); |
484 | buf = *buf_p; | |
ad91cd99 | 485 | if (buf[0] == 'E') |
35b1e5cc | 486 | trace_error (buf); |
61012eef | 487 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
488 | { |
489 | ULONGEST ul; | |
490 | CORE_ADDR from, to, org_to; | |
491 | char *p, *pp; | |
492 | int adjusted_size = 0; | |
7556d4a4 | 493 | int relocated = 0; |
dde08ee1 PA |
494 | |
495 | p = buf + strlen ("qRelocInsn:"); | |
496 | pp = unpack_varlen_hex (p, &ul); | |
497 | if (*pp != ';') | |
cb91c06a | 498 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
499 | from = ul; |
500 | ||
501 | p = pp + 1; | |
a9cbf802 | 502 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
503 | to = ul; |
504 | ||
505 | org_to = to; | |
506 | ||
492d29ea | 507 | TRY |
dde08ee1 | 508 | { |
f5656ead | 509 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 510 | relocated = 1; |
dde08ee1 | 511 | } |
492d29ea | 512 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
513 | { |
514 | if (ex.error == MEMORY_ERROR) | |
515 | { | |
516 | /* Propagate memory errors silently back to the | |
517 | target. The stub may have limited the range of | |
518 | addresses we can write to, for example. */ | |
519 | } | |
520 | else | |
521 | { | |
522 | /* Something unexpectedly bad happened. Be verbose | |
523 | so we can tell what, and propagate the error back | |
524 | to the stub, so it doesn't get stuck waiting for | |
525 | a response. */ | |
526 | exception_fprintf (gdb_stderr, ex, | |
527 | _("warning: relocating instruction: ")); | |
528 | } | |
529 | putpkt ("E01"); | |
530 | } | |
492d29ea | 531 | END_CATCH |
7556d4a4 PA |
532 | |
533 | if (relocated) | |
dde08ee1 PA |
534 | { |
535 | adjusted_size = to - org_to; | |
536 | ||
bba74b36 | 537 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
538 | putpkt (buf); |
539 | } | |
dde08ee1 | 540 | } |
ad91cd99 | 541 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
542 | remote_console_output (buf + 1); /* 'O' message from stub */ |
543 | else | |
0df8b418 | 544 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
545 | } |
546 | while (1); | |
547 | } | |
3c3bea1c | 548 | |
d01949b6 AC |
549 | /* Handle for retreving the remote protocol data from gdbarch. */ |
550 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
551 | ||
ea9c271d DJ |
552 | static struct remote_arch_state * |
553 | get_remote_arch_state (void) | |
d01949b6 | 554 | { |
f5656ead | 555 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
556 | } |
557 | ||
0b83947e DJ |
558 | /* Fetch the global remote target state. */ |
559 | ||
560 | static struct remote_state * | |
561 | get_remote_state (void) | |
562 | { | |
563 | /* Make sure that the remote architecture state has been | |
564 | initialized, because doing so might reallocate rs->buf. Any | |
565 | function which calls getpkt also needs to be mindful of changes | |
566 | to rs->buf, but this call limits the number of places which run | |
567 | into trouble. */ | |
568 | get_remote_arch_state (); | |
569 | ||
570 | return get_remote_state_raw (); | |
571 | } | |
572 | ||
74ca34ce DJ |
573 | static int |
574 | compare_pnums (const void *lhs_, const void *rhs_) | |
575 | { | |
576 | const struct packet_reg * const *lhs = lhs_; | |
577 | const struct packet_reg * const *rhs = rhs_; | |
578 | ||
579 | if ((*lhs)->pnum < (*rhs)->pnum) | |
580 | return -1; | |
581 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
582 | return 0; | |
583 | else | |
584 | return 1; | |
585 | } | |
586 | ||
c21236dc PA |
587 | static int |
588 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 589 | { |
74ca34ce | 590 | int regnum, num_remote_regs, offset; |
74ca34ce | 591 | struct packet_reg **remote_regs; |
ea9c271d | 592 | |
4a22f64d | 593 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 594 | { |
c21236dc | 595 | struct packet_reg *r = ®s[regnum]; |
baef701f | 596 | |
4a22f64d | 597 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
598 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
599 | r->pnum = -1; | |
600 | else | |
601 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
602 | ||
b323314b | 603 | r->regnum = regnum; |
74ca34ce DJ |
604 | } |
605 | ||
606 | /* Define the g/G packet format as the contents of each register | |
607 | with a remote protocol number, in order of ascending protocol | |
608 | number. */ | |
609 | ||
4a22f64d | 610 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 611 | * sizeof (struct packet_reg *)); |
f57d151a | 612 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 613 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 614 | regnum++) |
c21236dc PA |
615 | if (regs[regnum].pnum != -1) |
616 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 617 | |
74ca34ce DJ |
618 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
619 | compare_pnums); | |
620 | ||
621 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
622 | { | |
623 | remote_regs[regnum]->in_g_packet = 1; | |
624 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 625 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
626 | } |
627 | ||
c21236dc PA |
628 | return offset; |
629 | } | |
630 | ||
631 | /* Given the architecture described by GDBARCH, return the remote | |
632 | protocol register's number and the register's offset in the g/G | |
633 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
634 | If the target does not have a mapping for REGNUM, return false, | |
635 | otherwise, return true. */ | |
636 | ||
637 | int | |
638 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
639 | int *pnum, int *poffset) | |
640 | { | |
641 | int sizeof_g_packet; | |
642 | struct packet_reg *regs; | |
643 | struct cleanup *old_chain; | |
644 | ||
645 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
646 | ||
647 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
648 | old_chain = make_cleanup (xfree, regs); | |
649 | ||
650 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
651 | ||
652 | *pnum = regs[regnum].pnum; | |
653 | *poffset = regs[regnum].offset; | |
654 | ||
655 | do_cleanups (old_chain); | |
656 | ||
657 | return *pnum != -1; | |
658 | } | |
659 | ||
660 | static void * | |
661 | init_remote_state (struct gdbarch *gdbarch) | |
662 | { | |
663 | struct remote_state *rs = get_remote_state_raw (); | |
664 | struct remote_arch_state *rsa; | |
665 | ||
666 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
667 | ||
668 | /* Use the architecture to build a regnum<->pnum table, which will be | |
669 | 1:1 unless a feature set specifies otherwise. */ | |
670 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
671 | gdbarch_num_regs (gdbarch), | |
672 | struct packet_reg); | |
673 | ||
74ca34ce DJ |
674 | /* Record the maximum possible size of the g packet - it may turn out |
675 | to be smaller. */ | |
c21236dc | 676 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 677 | |
0df8b418 | 678 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
679 | remote stubs have a hardwired buffer size of 400 bytes |
680 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
681 | as the maximum packet-size to ensure that the packet and an extra | |
682 | NUL character can always fit in the buffer. This stops GDB | |
683 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
684 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
685 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 686 | |
ea9c271d DJ |
687 | /* This one is filled in when a ``g'' packet is received. */ |
688 | rsa->actual_register_packet_size = 0; | |
689 | ||
690 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
691 | default, adjust the size accordingly. Remember that each byte is |
692 | encoded as two characters. 32 is the overhead for the packet | |
693 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 694 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 695 | little. */ |
ea9c271d DJ |
696 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
697 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 698 | |
ea9c271d DJ |
699 | /* Make sure that the packet buffer is plenty big enough for |
700 | this architecture. */ | |
701 | if (rs->buf_size < rsa->remote_packet_size) | |
702 | { | |
703 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 704 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 705 | } |
6d820c5c | 706 | |
ea9c271d DJ |
707 | return rsa; |
708 | } | |
709 | ||
710 | /* Return the current allowed size of a remote packet. This is | |
711 | inferred from the current architecture, and should be used to | |
712 | limit the length of outgoing packets. */ | |
713 | static long | |
714 | get_remote_packet_size (void) | |
715 | { | |
be2a5f71 | 716 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
717 | struct remote_arch_state *rsa = get_remote_arch_state (); |
718 | ||
be2a5f71 DJ |
719 | if (rs->explicit_packet_size) |
720 | return rs->explicit_packet_size; | |
721 | ||
ea9c271d | 722 | return rsa->remote_packet_size; |
d01949b6 AC |
723 | } |
724 | ||
ad10f812 | 725 | static struct packet_reg * |
ea9c271d | 726 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 727 | { |
f5656ead | 728 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
729 | return NULL; |
730 | else | |
ad10f812 | 731 | { |
ea9c271d | 732 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 733 | |
b323314b AC |
734 | gdb_assert (r->regnum == regnum); |
735 | return r; | |
ad10f812 | 736 | } |
ad10f812 AC |
737 | } |
738 | ||
739 | static struct packet_reg * | |
ea9c271d | 740 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 741 | { |
b323314b | 742 | int i; |
a744cf53 | 743 | |
f5656ead | 744 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 745 | { |
ea9c271d | 746 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 747 | |
b323314b AC |
748 | if (r->pnum == pnum) |
749 | return r; | |
ad10f812 AC |
750 | } |
751 | return NULL; | |
d01949b6 AC |
752 | } |
753 | ||
c906108c SS |
754 | static struct target_ops remote_ops; |
755 | ||
756 | static struct target_ops extended_remote_ops; | |
757 | ||
6426a772 JM |
758 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
759 | ``forever'' still use the normal timeout mechanism. This is | |
760 | currently used by the ASYNC code to guarentee that target reads | |
761 | during the initial connect always time-out. Once getpkt has been | |
762 | modified to return a timeout indication and, in turn | |
763 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 764 | this can go away. */ |
6426a772 JM |
765 | static int wait_forever_enabled_p = 1; |
766 | ||
9a7071a8 JB |
767 | /* Allow the user to specify what sequence to send to the remote |
768 | when he requests a program interruption: Although ^C is usually | |
769 | what remote systems expect (this is the default, here), it is | |
770 | sometimes preferable to send a break. On other systems such | |
771 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
772 | is required in order to interrupt the execution. */ | |
773 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
774 | const char interrupt_sequence_break[] = "BREAK"; | |
775 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 776 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
777 | { |
778 | interrupt_sequence_control_c, | |
779 | interrupt_sequence_break, | |
780 | interrupt_sequence_break_g, | |
781 | NULL | |
782 | }; | |
783 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
784 | ||
785 | static void | |
786 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
787 | struct cmd_list_element *c, | |
788 | const char *value) | |
789 | { | |
790 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
791 | fprintf_filtered (file, | |
792 | _("Send the ASCII ETX character (Ctrl-c) " | |
793 | "to the remote target to interrupt the " | |
794 | "execution of the program.\n")); | |
795 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
796 | fprintf_filtered (file, | |
797 | _("send a break signal to the remote target " | |
798 | "to interrupt the execution of the program.\n")); | |
799 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
800 | fprintf_filtered (file, | |
801 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
802 | "the remote target to interrupt the execution " | |
803 | "of Linux kernel.\n")); | |
804 | else | |
805 | internal_error (__FILE__, __LINE__, | |
806 | _("Invalid value for interrupt_sequence_mode: %s."), | |
807 | interrupt_sequence_mode); | |
808 | } | |
6426a772 | 809 | |
9a7071a8 JB |
810 | /* This boolean variable specifies whether interrupt_sequence is sent |
811 | to the remote target when gdb connects to it. | |
812 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
813 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
814 | static int interrupt_on_connect = 0; | |
c906108c | 815 | |
9a7071a8 JB |
816 | /* This variable is used to implement the "set/show remotebreak" commands. |
817 | Since these commands are now deprecated in favor of "set/show remote | |
818 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
819 | static int remote_break; |
820 | ||
9a7071a8 JB |
821 | static void |
822 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
823 | { | |
824 | if (remote_break) | |
825 | interrupt_sequence_mode = interrupt_sequence_break; | |
826 | else | |
827 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
828 | } | |
829 | ||
830 | static void | |
831 | show_remotebreak (struct ui_file *file, int from_tty, | |
832 | struct cmd_list_element *c, | |
833 | const char *value) | |
834 | { | |
835 | } | |
836 | ||
c906108c SS |
837 | /* This variable sets the number of bits in an address that are to be |
838 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 839 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
840 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
841 | initial implementation of remote.c restricted the address sent in | |
842 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
843 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
844 | address was never sent. Since fixing this bug may cause a break in | |
845 | some remote targets this variable is principly provided to | |
23860348 | 846 | facilitate backward compatibility. */ |
c906108c | 847 | |
883b9c6c | 848 | static unsigned int remote_address_size; |
c906108c | 849 | |
75c99385 PA |
850 | /* Temporary to track who currently owns the terminal. See |
851 | remote_terminal_* for more details. */ | |
6426a772 JM |
852 | |
853 | static int remote_async_terminal_ours_p; | |
854 | ||
2d717e4f DJ |
855 | /* The executable file to use for "run" on the remote side. */ |
856 | ||
857 | static char *remote_exec_file = ""; | |
858 | ||
11cf8741 | 859 | \f |
11cf8741 | 860 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
861 | memory read/write packet. MIN (rsa->remote_packet_size, |
862 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 863 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
864 | (speed up transfers). The variables ``preferred_*'' (the user |
865 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 866 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
867 | |
868 | struct memory_packet_config | |
869 | { | |
870 | char *name; | |
871 | long size; | |
872 | int fixed_p; | |
873 | }; | |
874 | ||
875 | /* Compute the current size of a read/write packet. Since this makes | |
876 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
877 | ||
878 | static long | |
879 | get_memory_packet_size (struct memory_packet_config *config) | |
880 | { | |
d01949b6 | 881 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
882 | struct remote_arch_state *rsa = get_remote_arch_state (); |
883 | ||
11cf8741 JM |
884 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
885 | law?) that some hosts don't cope very well with large alloca() | |
886 | calls. Eventually the alloca() code will be replaced by calls to | |
887 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 888 | be lifted or removed. */ |
11cf8741 JM |
889 | #ifndef MAX_REMOTE_PACKET_SIZE |
890 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
891 | #endif | |
3de11b2e | 892 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 893 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 894 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
895 | #endif |
896 | long what_they_get; | |
897 | if (config->fixed_p) | |
898 | { | |
899 | if (config->size <= 0) | |
900 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
901 | else | |
902 | what_they_get = config->size; | |
903 | } | |
904 | else | |
905 | { | |
ea9c271d | 906 | what_they_get = get_remote_packet_size (); |
23860348 | 907 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
908 | if (config->size > 0 |
909 | && what_they_get > config->size) | |
910 | what_they_get = config->size; | |
be2a5f71 DJ |
911 | |
912 | /* Limit it to the size of the targets ``g'' response unless we have | |
913 | permission from the stub to use a larger packet size. */ | |
914 | if (rs->explicit_packet_size == 0 | |
915 | && rsa->actual_register_packet_size > 0 | |
916 | && what_they_get > rsa->actual_register_packet_size) | |
917 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
918 | } |
919 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
920 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
921 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
922 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
923 | |
924 | /* Make sure there is room in the global buffer for this packet | |
925 | (including its trailing NUL byte). */ | |
926 | if (rs->buf_size < what_they_get + 1) | |
927 | { | |
928 | rs->buf_size = 2 * what_they_get; | |
929 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
930 | } | |
931 | ||
11cf8741 JM |
932 | return what_they_get; |
933 | } | |
934 | ||
0df8b418 | 935 | /* Update the size of a read/write packet. If they user wants |
23860348 | 936 | something really big then do a sanity check. */ |
11cf8741 JM |
937 | |
938 | static void | |
939 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
940 | { | |
941 | int fixed_p = config->fixed_p; | |
942 | long size = config->size; | |
a744cf53 | 943 | |
11cf8741 | 944 | if (args == NULL) |
8a3fe4f8 | 945 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
946 | else if (strcmp (args, "hard") == 0 |
947 | || strcmp (args, "fixed") == 0) | |
948 | fixed_p = 1; | |
949 | else if (strcmp (args, "soft") == 0 | |
950 | || strcmp (args, "limit") == 0) | |
951 | fixed_p = 0; | |
952 | else | |
953 | { | |
954 | char *end; | |
a744cf53 | 955 | |
11cf8741 JM |
956 | size = strtoul (args, &end, 0); |
957 | if (args == end) | |
8a3fe4f8 | 958 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
959 | #if 0 |
960 | /* Instead of explicitly capping the size of a packet to | |
961 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
962 | instead allowed to set the size to something arbitrarily | |
23860348 | 963 | large. */ |
11cf8741 | 964 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 965 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
966 | #endif |
967 | } | |
23860348 | 968 | /* Extra checks? */ |
11cf8741 JM |
969 | if (fixed_p && !config->fixed_p) |
970 | { | |
e2e0b3e5 AC |
971 | if (! query (_("The target may not be able to correctly handle a %s\n" |
972 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 973 | config->name, size)) |
8a3fe4f8 | 974 | error (_("Packet size not changed.")); |
11cf8741 | 975 | } |
23860348 | 976 | /* Update the config. */ |
11cf8741 JM |
977 | config->fixed_p = fixed_p; |
978 | config->size = size; | |
979 | } | |
980 | ||
981 | static void | |
982 | show_memory_packet_size (struct memory_packet_config *config) | |
983 | { | |
a3f17187 | 984 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 985 | if (config->fixed_p) |
a3f17187 | 986 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
987 | get_memory_packet_size (config)); |
988 | else | |
a3f17187 | 989 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
990 | get_memory_packet_size (config)); |
991 | } | |
992 | ||
993 | static struct memory_packet_config memory_write_packet_config = | |
994 | { | |
995 | "memory-write-packet-size", | |
996 | }; | |
997 | ||
998 | static void | |
999 | set_memory_write_packet_size (char *args, int from_tty) | |
1000 | { | |
1001 | set_memory_packet_size (args, &memory_write_packet_config); | |
1002 | } | |
1003 | ||
1004 | static void | |
1005 | show_memory_write_packet_size (char *args, int from_tty) | |
1006 | { | |
1007 | show_memory_packet_size (&memory_write_packet_config); | |
1008 | } | |
1009 | ||
1010 | static long | |
1011 | get_memory_write_packet_size (void) | |
1012 | { | |
1013 | return get_memory_packet_size (&memory_write_packet_config); | |
1014 | } | |
1015 | ||
1016 | static struct memory_packet_config memory_read_packet_config = | |
1017 | { | |
1018 | "memory-read-packet-size", | |
1019 | }; | |
1020 | ||
1021 | static void | |
1022 | set_memory_read_packet_size (char *args, int from_tty) | |
1023 | { | |
1024 | set_memory_packet_size (args, &memory_read_packet_config); | |
1025 | } | |
1026 | ||
1027 | static void | |
1028 | show_memory_read_packet_size (char *args, int from_tty) | |
1029 | { | |
1030 | show_memory_packet_size (&memory_read_packet_config); | |
1031 | } | |
1032 | ||
1033 | static long | |
1034 | get_memory_read_packet_size (void) | |
1035 | { | |
1036 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1037 | |
11cf8741 JM |
1038 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1039 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1040 | increased beyond this. */ |
1041 | if (size > get_remote_packet_size ()) | |
1042 | size = get_remote_packet_size (); | |
11cf8741 JM |
1043 | return size; |
1044 | } | |
1045 | ||
11cf8741 | 1046 | \f |
5a2468f5 | 1047 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1048 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1049 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1050 | |
1051 | enum packet_support | |
1052 | { | |
1053 | PACKET_SUPPORT_UNKNOWN = 0, | |
1054 | PACKET_ENABLE, | |
1055 | PACKET_DISABLE | |
1056 | }; | |
1057 | ||
5a2468f5 JM |
1058 | struct packet_config |
1059 | { | |
bb572ddd DJ |
1060 | const char *name; |
1061 | const char *title; | |
4082afcc PA |
1062 | |
1063 | /* If auto, GDB auto-detects support for this packet or feature, | |
1064 | either through qSupported, or by trying the packet and looking | |
1065 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1066 | packet. If false, the packet is disabled. Configs that don't |
1067 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1068 | enum auto_boolean detect; |
4082afcc PA |
1069 | |
1070 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1071 | enum packet_support support; |
1072 | }; | |
1073 | ||
d471ea57 | 1074 | /* Analyze a packet's return value and update the packet config |
23860348 | 1075 | accordingly. */ |
d471ea57 AC |
1076 | |
1077 | enum packet_result | |
1078 | { | |
1079 | PACKET_ERROR, | |
1080 | PACKET_OK, | |
1081 | PACKET_UNKNOWN | |
1082 | }; | |
1083 | ||
4082afcc PA |
1084 | static enum packet_support packet_config_support (struct packet_config *config); |
1085 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1086 | |
1087 | static void | |
fba45db2 | 1088 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1089 | { |
1090 | char *support = "internal-error"; | |
a744cf53 | 1091 | |
4082afcc | 1092 | switch (packet_config_support (config)) |
5a2468f5 JM |
1093 | { |
1094 | case PACKET_ENABLE: | |
1095 | support = "enabled"; | |
1096 | break; | |
1097 | case PACKET_DISABLE: | |
1098 | support = "disabled"; | |
1099 | break; | |
1100 | case PACKET_SUPPORT_UNKNOWN: | |
1101 | support = "unknown"; | |
1102 | break; | |
1103 | } | |
1104 | switch (config->detect) | |
1105 | { | |
7f19b9a2 | 1106 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1107 | printf_filtered (_("Support for the `%s' packet " |
1108 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1109 | config->name, support); |
5a2468f5 | 1110 | break; |
7f19b9a2 AC |
1111 | case AUTO_BOOLEAN_TRUE: |
1112 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1113 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1114 | config->name, support); | |
8e248173 | 1115 | break; |
5a2468f5 JM |
1116 | } |
1117 | } | |
1118 | ||
1119 | static void | |
bb572ddd DJ |
1120 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1121 | const char *title, int legacy) | |
d471ea57 | 1122 | { |
5a2468f5 JM |
1123 | char *set_doc; |
1124 | char *show_doc; | |
d471ea57 | 1125 | char *cmd_name; |
3ed07be4 | 1126 | |
5a2468f5 JM |
1127 | config->name = name; |
1128 | config->title = title; | |
b435e160 AC |
1129 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1130 | name, title); | |
3e43a32a MS |
1131 | show_doc = xstrprintf ("Show current use of remote " |
1132 | "protocol `%s' (%s) packet", | |
b435e160 | 1133 | name, title); |
d471ea57 | 1134 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1135 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1136 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1137 | &config->detect, set_doc, |
1138 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1139 | NULL, |
bb572ddd DJ |
1140 | show_remote_protocol_packet_cmd, |
1141 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1142 | /* The command code copies the documentation strings. */ |
1143 | xfree (set_doc); | |
1144 | xfree (show_doc); | |
23860348 | 1145 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1146 | if (legacy) |
1147 | { | |
1148 | char *legacy_name; | |
a744cf53 | 1149 | |
b435e160 | 1150 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1151 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1152 | &remote_set_cmdlist); |
d471ea57 | 1153 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1154 | &remote_show_cmdlist); |
d471ea57 | 1155 | } |
5a2468f5 JM |
1156 | } |
1157 | ||
d471ea57 | 1158 | static enum packet_result |
a76d924d | 1159 | packet_check_result (const char *buf) |
5a2468f5 | 1160 | { |
d471ea57 | 1161 | if (buf[0] != '\0') |
5a2468f5 | 1162 | { |
d471ea57 | 1163 | /* The stub recognized the packet request. Check that the |
23860348 | 1164 | operation succeeded. */ |
a76d924d DJ |
1165 | if (buf[0] == 'E' |
1166 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1167 | && buf[3] == '\0') | |
1168 | /* "Enn" - definitly an error. */ | |
1169 | return PACKET_ERROR; | |
1170 | ||
1171 | /* Always treat "E." as an error. This will be used for | |
1172 | more verbose error messages, such as E.memtypes. */ | |
1173 | if (buf[0] == 'E' && buf[1] == '.') | |
1174 | return PACKET_ERROR; | |
1175 | ||
1176 | /* The packet may or may not be OK. Just assume it is. */ | |
1177 | return PACKET_OK; | |
1178 | } | |
1179 | else | |
1180 | /* The stub does not support the packet. */ | |
1181 | return PACKET_UNKNOWN; | |
1182 | } | |
1183 | ||
1184 | static enum packet_result | |
1185 | packet_ok (const char *buf, struct packet_config *config) | |
1186 | { | |
1187 | enum packet_result result; | |
1188 | ||
4082afcc PA |
1189 | if (config->detect != AUTO_BOOLEAN_TRUE |
1190 | && config->support == PACKET_DISABLE) | |
1191 | internal_error (__FILE__, __LINE__, | |
1192 | _("packet_ok: attempt to use a disabled packet")); | |
1193 | ||
a76d924d DJ |
1194 | result = packet_check_result (buf); |
1195 | switch (result) | |
1196 | { | |
1197 | case PACKET_OK: | |
1198 | case PACKET_ERROR: | |
1199 | /* The stub recognized the packet request. */ | |
4082afcc | 1200 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1201 | { |
d471ea57 AC |
1202 | if (remote_debug) |
1203 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1204 | "Packet %s (%s) is supported\n", |
1205 | config->name, config->title); | |
d471ea57 | 1206 | config->support = PACKET_ENABLE; |
d471ea57 | 1207 | } |
a76d924d DJ |
1208 | break; |
1209 | case PACKET_UNKNOWN: | |
23860348 | 1210 | /* The stub does not support the packet. */ |
4082afcc PA |
1211 | if (config->detect == AUTO_BOOLEAN_AUTO |
1212 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1213 | { |
4082afcc PA |
1214 | /* If the stub previously indicated that the packet was |
1215 | supported then there is a protocol error. */ | |
1216 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1217 | config->name, config->title); | |
1218 | } | |
1219 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1220 | { | |
1221 | /* The user set it wrong. */ | |
1222 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1223 | config->name, config->title); | |
d471ea57 | 1224 | } |
4082afcc PA |
1225 | |
1226 | if (remote_debug) | |
1227 | fprintf_unfiltered (gdb_stdlog, | |
1228 | "Packet %s (%s) is NOT supported\n", | |
1229 | config->name, config->title); | |
1230 | config->support = PACKET_DISABLE; | |
a76d924d | 1231 | break; |
5a2468f5 | 1232 | } |
a76d924d DJ |
1233 | |
1234 | return result; | |
5a2468f5 JM |
1235 | } |
1236 | ||
444abaca DJ |
1237 | enum { |
1238 | PACKET_vCont = 0, | |
1239 | PACKET_X, | |
1240 | PACKET_qSymbol, | |
1241 | PACKET_P, | |
1242 | PACKET_p, | |
1243 | PACKET_Z0, | |
1244 | PACKET_Z1, | |
1245 | PACKET_Z2, | |
1246 | PACKET_Z3, | |
1247 | PACKET_Z4, | |
a6b151f1 DJ |
1248 | PACKET_vFile_open, |
1249 | PACKET_vFile_pread, | |
1250 | PACKET_vFile_pwrite, | |
1251 | PACKET_vFile_close, | |
1252 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1253 | PACKET_vFile_readlink, |
0a93529c | 1254 | PACKET_vFile_fstat, |
0876f84a | 1255 | PACKET_qXfer_auxv, |
23181151 | 1256 | PACKET_qXfer_features, |
cfa9d6d9 | 1257 | PACKET_qXfer_libraries, |
2268b414 | 1258 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1259 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1260 | PACKET_qXfer_spu_read, |
1261 | PACKET_qXfer_spu_write, | |
07e059b5 | 1262 | PACKET_qXfer_osdata, |
dc146f7c | 1263 | PACKET_qXfer_threads, |
0fb4aa4b | 1264 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1265 | PACKET_qXfer_traceframe_info, |
169081d0 | 1266 | PACKET_qXfer_uib, |
711e434b | 1267 | PACKET_qGetTIBAddr, |
444abaca | 1268 | PACKET_qGetTLSAddr, |
be2a5f71 | 1269 | PACKET_qSupported, |
bd3eecc3 | 1270 | PACKET_qTStatus, |
89be2091 | 1271 | PACKET_QPassSignals, |
9b224c5e | 1272 | PACKET_QProgramSignals, |
936d2992 | 1273 | PACKET_qCRC, |
08388c79 | 1274 | PACKET_qSearch_memory, |
2d717e4f DJ |
1275 | PACKET_vAttach, |
1276 | PACKET_vRun, | |
a6f3e723 | 1277 | PACKET_QStartNoAckMode, |
82f73884 | 1278 | PACKET_vKill, |
4aa995e1 PA |
1279 | PACKET_qXfer_siginfo_read, |
1280 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1281 | PACKET_qAttached, |
4082afcc PA |
1282 | |
1283 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1284 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1285 | |
1286 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1287 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1288 | |
1289 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1290 | PACKET_BreakpointCommands, |
4082afcc PA |
1291 | |
1292 | /* Support for fast tracepoints. */ | |
7a697b8d | 1293 | PACKET_FastTracepoints, |
4082afcc PA |
1294 | |
1295 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1296 | PACKET_StaticTracepoints, |
4082afcc PA |
1297 | |
1298 | /* Support for installing tracepoints while a trace experiment is | |
1299 | running. */ | |
1e4d1764 | 1300 | PACKET_InstallInTrace, |
4082afcc | 1301 | |
40ab02ce MS |
1302 | PACKET_bc, |
1303 | PACKET_bs, | |
409873ef | 1304 | PACKET_TracepointSource, |
d914c394 | 1305 | PACKET_QAllow, |
78d85199 | 1306 | PACKET_qXfer_fdpic, |
03583c20 | 1307 | PACKET_QDisableRandomization, |
d1feda86 | 1308 | PACKET_QAgent, |
f6f899bf | 1309 | PACKET_QTBuffer_size, |
9accd112 MM |
1310 | PACKET_Qbtrace_off, |
1311 | PACKET_Qbtrace_bts, | |
1312 | PACKET_qXfer_btrace, | |
4082afcc PA |
1313 | |
1314 | /* Support for the QNonStop packet. */ | |
1315 | PACKET_QNonStop, | |
1316 | ||
1317 | /* Support for multi-process extensions. */ | |
1318 | PACKET_multiprocess_feature, | |
1319 | ||
1320 | /* Support for enabling and disabling tracepoints while a trace | |
1321 | experiment is running. */ | |
1322 | PACKET_EnableDisableTracepoints_feature, | |
1323 | ||
1324 | /* Support for collecting strings using the tracenz bytecode. */ | |
1325 | PACKET_tracenz_feature, | |
1326 | ||
1327 | /* Support for continuing to run a trace experiment while GDB is | |
1328 | disconnected. */ | |
1329 | PACKET_DisconnectedTracing_feature, | |
1330 | ||
1331 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1332 | PACKET_augmented_libraries_svr4_read_feature, | |
1333 | ||
f4abbc16 MM |
1334 | /* Support for the qXfer:btrace-conf:read packet. */ |
1335 | PACKET_qXfer_btrace_conf, | |
1336 | ||
d33501a5 MM |
1337 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1338 | PACKET_Qbtrace_conf_bts_size, | |
1339 | ||
f7e6eed5 PA |
1340 | /* Support for swbreak+ feature. */ |
1341 | PACKET_swbreak_feature, | |
1342 | ||
1343 | /* Support for hwbreak+ feature. */ | |
1344 | PACKET_hwbreak_feature, | |
1345 | ||
444abaca DJ |
1346 | PACKET_MAX |
1347 | }; | |
506fb367 | 1348 | |
444abaca | 1349 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1350 | |
f7e6eed5 PA |
1351 | /* Returns the packet's corresponding "set remote foo-packet" command |
1352 | state. See struct packet_config for more details. */ | |
1353 | ||
1354 | static enum auto_boolean | |
1355 | packet_set_cmd_state (int packet) | |
1356 | { | |
1357 | return remote_protocol_packets[packet].detect; | |
1358 | } | |
1359 | ||
4082afcc PA |
1360 | /* Returns whether a given packet or feature is supported. This takes |
1361 | into account the state of the corresponding "set remote foo-packet" | |
1362 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1363 | |
4082afcc PA |
1364 | static enum packet_support |
1365 | packet_config_support (struct packet_config *config) | |
1366 | { | |
1367 | switch (config->detect) | |
444abaca | 1368 | { |
4082afcc PA |
1369 | case AUTO_BOOLEAN_TRUE: |
1370 | return PACKET_ENABLE; | |
1371 | case AUTO_BOOLEAN_FALSE: | |
1372 | return PACKET_DISABLE; | |
1373 | case AUTO_BOOLEAN_AUTO: | |
1374 | return config->support; | |
1375 | default: | |
1376 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1377 | } |
4082afcc PA |
1378 | } |
1379 | ||
1380 | /* Same as packet_config_support, but takes the packet's enum value as | |
1381 | argument. */ | |
1382 | ||
1383 | static enum packet_support | |
1384 | packet_support (int packet) | |
1385 | { | |
1386 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1387 | ||
1388 | return packet_config_support (config); | |
dc8acb97 MS |
1389 | } |
1390 | ||
5a2468f5 | 1391 | static void |
444abaca DJ |
1392 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1393 | struct cmd_list_element *c, | |
1394 | const char *value) | |
5a2468f5 | 1395 | { |
444abaca | 1396 | struct packet_config *packet; |
5a2468f5 | 1397 | |
444abaca DJ |
1398 | for (packet = remote_protocol_packets; |
1399 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1400 | packet++) | |
1401 | { | |
1402 | if (&packet->detect == c->var) | |
1403 | { | |
1404 | show_packet_config_cmd (packet); | |
1405 | return; | |
1406 | } | |
1407 | } | |
9b20d036 | 1408 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1409 | c->name); |
5a2468f5 JM |
1410 | } |
1411 | ||
d471ea57 AC |
1412 | /* Should we try one of the 'Z' requests? */ |
1413 | ||
1414 | enum Z_packet_type | |
1415 | { | |
1416 | Z_PACKET_SOFTWARE_BP, | |
1417 | Z_PACKET_HARDWARE_BP, | |
1418 | Z_PACKET_WRITE_WP, | |
1419 | Z_PACKET_READ_WP, | |
1420 | Z_PACKET_ACCESS_WP, | |
1421 | NR_Z_PACKET_TYPES | |
1422 | }; | |
96baa820 | 1423 | |
d471ea57 | 1424 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1425 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1426 | |
7f19b9a2 | 1427 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1428 | |
1429 | static void | |
fba45db2 KB |
1430 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1431 | struct cmd_list_element *c) | |
96baa820 | 1432 | { |
d471ea57 | 1433 | int i; |
a744cf53 | 1434 | |
d471ea57 | 1435 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1436 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1437 | } |
1438 | ||
1439 | static void | |
08546159 AC |
1440 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1441 | struct cmd_list_element *c, | |
1442 | const char *value) | |
96baa820 | 1443 | { |
d471ea57 | 1444 | int i; |
a744cf53 | 1445 | |
d471ea57 AC |
1446 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1447 | { | |
444abaca | 1448 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1449 | } |
96baa820 JM |
1450 | } |
1451 | ||
4082afcc PA |
1452 | /* Returns true if the multi-process extensions are in effect. */ |
1453 | ||
1454 | static int | |
1455 | remote_multi_process_p (struct remote_state *rs) | |
1456 | { | |
1457 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1458 | } | |
1459 | ||
23860348 | 1460 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1461 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1462 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1463 | |
74531fed PA |
1464 | \f |
1465 | /* Asynchronous signal handle registered as event loop source for | |
1466 | when we have pending events ready to be passed to the core. */ | |
1467 | ||
1468 | static struct async_event_handler *remote_async_inferior_event_token; | |
1469 | ||
c906108c SS |
1470 | \f |
1471 | ||
79d7f229 PA |
1472 | static ptid_t magic_null_ptid; |
1473 | static ptid_t not_sent_ptid; | |
1474 | static ptid_t any_thread_ptid; | |
1475 | ||
0b16c5cf PA |
1476 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1477 | detach instead of killing it when bailing out). */ | |
1478 | ||
1479 | static int | |
1480 | remote_query_attached (int pid) | |
1481 | { | |
1482 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1483 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1484 | |
4082afcc | 1485 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1486 | return 0; |
1487 | ||
1488 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1489 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1490 | else |
bba74b36 | 1491 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1492 | |
1493 | putpkt (rs->buf); | |
1494 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1495 | ||
1496 | switch (packet_ok (rs->buf, | |
1554e9be | 1497 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1498 | { |
1499 | case PACKET_OK: | |
1500 | if (strcmp (rs->buf, "1") == 0) | |
1501 | return 1; | |
1502 | break; | |
1503 | case PACKET_ERROR: | |
1504 | warning (_("Remote failure reply: %s"), rs->buf); | |
1505 | break; | |
1506 | case PACKET_UNKNOWN: | |
1507 | break; | |
1508 | } | |
1509 | ||
1510 | return 0; | |
1511 | } | |
1512 | ||
49c62f2e PA |
1513 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1514 | has been invented by GDB, instead of reported by the target. Since | |
1515 | we can be connected to a remote system before before knowing about | |
1516 | any inferior, mark the target with execution when we find the first | |
1517 | inferior. If ATTACHED is 1, then we had just attached to this | |
1518 | inferior. If it is 0, then we just created this inferior. If it | |
1519 | is -1, then try querying the remote stub to find out if it had | |
1520 | attached to the inferior or not. */ | |
1941c569 PA |
1521 | |
1522 | static struct inferior * | |
49c62f2e | 1523 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1524 | { |
1941c569 PA |
1525 | struct inferior *inf; |
1526 | ||
0b16c5cf PA |
1527 | /* Check whether this process we're learning about is to be |
1528 | considered attached, or if is to be considered to have been | |
1529 | spawned by the stub. */ | |
1530 | if (attached == -1) | |
1531 | attached = remote_query_attached (pid); | |
1532 | ||
f5656ead | 1533 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1534 | { |
1535 | /* If the target shares code across all inferiors, then every | |
1536 | attach adds a new inferior. */ | |
1537 | inf = add_inferior (pid); | |
1538 | ||
1539 | /* ... and every inferior is bound to the same program space. | |
1540 | However, each inferior may still have its own address | |
1541 | space. */ | |
1542 | inf->aspace = maybe_new_address_space (); | |
1543 | inf->pspace = current_program_space; | |
1544 | } | |
1545 | else | |
1546 | { | |
1547 | /* In the traditional debugging scenario, there's a 1-1 match | |
1548 | between program/address spaces. We simply bind the inferior | |
1549 | to the program space's address space. */ | |
1550 | inf = current_inferior (); | |
1551 | inferior_appeared (inf, pid); | |
1552 | } | |
1941c569 | 1553 | |
0b16c5cf | 1554 | inf->attach_flag = attached; |
49c62f2e | 1555 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1556 | |
1941c569 PA |
1557 | return inf; |
1558 | } | |
1559 | ||
1560 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1561 | according to RUNNING. */ | |
1562 | ||
c906108c | 1563 | static void |
1941c569 | 1564 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1565 | { |
b7ea362b PA |
1566 | struct remote_state *rs = get_remote_state (); |
1567 | ||
1568 | /* GDB historically didn't pull threads in the initial connection | |
1569 | setup. If the remote target doesn't even have a concept of | |
1570 | threads (e.g., a bare-metal target), even if internally we | |
1571 | consider that a single-threaded target, mentioning a new thread | |
1572 | might be confusing to the user. Be silent then, preserving the | |
1573 | age old behavior. */ | |
1574 | if (rs->starting_up) | |
1575 | add_thread_silent (ptid); | |
1576 | else | |
1577 | add_thread (ptid); | |
1941c569 PA |
1578 | |
1579 | set_executing (ptid, running); | |
1580 | set_running (ptid, running); | |
1581 | } | |
1582 | ||
1583 | /* Come here when we learn about a thread id from the remote target. | |
1584 | It may be the first time we hear about such thread, so take the | |
1585 | opportunity to add it to GDB's thread list. In case this is the | |
1586 | first time we're noticing its corresponding inferior, add it to | |
1587 | GDB's inferior list as well. */ | |
1588 | ||
1589 | static void | |
1590 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1591 | { | |
c906108c SS |
1592 | /* If this is a new thread, add it to GDB's thread list. |
1593 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1594 | |
1595 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1596 | { | |
1597 | /* We're seeing an event on a thread id we knew had exited. | |
1598 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1599 | remote_add_thread (currthread, running); |
82f73884 PA |
1600 | return; |
1601 | } | |
1602 | ||
79d7f229 | 1603 | if (!in_thread_list (currthread)) |
c0a2216e | 1604 | { |
1941c569 | 1605 | struct inferior *inf = NULL; |
bad34192 | 1606 | int pid = ptid_get_pid (currthread); |
1941c569 | 1607 | |
bad34192 PA |
1608 | if (ptid_is_pid (inferior_ptid) |
1609 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1610 | { |
1611 | /* inferior_ptid has no thread member yet. This can happen | |
1612 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1613 | stub doesn't support qC. This is the first stop reported | |
1614 | after an attach, so this is the main thread. Update the | |
1615 | ptid in the thread list. */ | |
bad34192 PA |
1616 | if (in_thread_list (pid_to_ptid (pid))) |
1617 | thread_change_ptid (inferior_ptid, currthread); | |
1618 | else | |
1619 | { | |
1620 | remote_add_thread (currthread, running); | |
1621 | inferior_ptid = currthread; | |
1622 | } | |
dc146f7c | 1623 | return; |
c0a2216e | 1624 | } |
82f73884 PA |
1625 | |
1626 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1627 | { |
1628 | /* inferior_ptid is not set yet. This can happen with the | |
1629 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1630 | doesn't support qC. This is the first stop reported | |
1631 | after an attach, so this is the main thread. Update the | |
1632 | ptid in the thread list. */ | |
dc146f7c | 1633 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1634 | return; |
c0a2216e | 1635 | } |
82f73884 | 1636 | |
29c87f7f PA |
1637 | /* When connecting to a target remote, or to a target |
1638 | extended-remote which already was debugging an inferior, we | |
1639 | may not know about it yet. Add it before adding its child | |
1640 | thread, so notifications are emitted in a sensible order. */ | |
1641 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1642 | { |
1643 | struct remote_state *rs = get_remote_state (); | |
1644 | int fake_pid_p = !remote_multi_process_p (rs); | |
1645 | ||
1646 | inf = remote_add_inferior (fake_pid_p, | |
1647 | ptid_get_pid (currthread), -1); | |
1648 | } | |
29c87f7f | 1649 | |
82f73884 | 1650 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1651 | remote_add_thread (currthread, running); |
1652 | ||
1653 | /* If we found a new inferior, let the common code do whatever | |
1654 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1655 | breakpoints), unless we're just setting up an all-stop |
1656 | connection. */ | |
1941c569 | 1657 | if (inf != NULL) |
b7ea362b PA |
1658 | { |
1659 | struct remote_state *rs = get_remote_state (); | |
1660 | ||
1661 | if (non_stop || !rs->starting_up) | |
1662 | notice_new_inferior (currthread, running, 0); | |
1663 | } | |
c0a2216e | 1664 | } |
c906108c SS |
1665 | } |
1666 | ||
dc146f7c VP |
1667 | /* Return the private thread data, creating it if necessary. */ |
1668 | ||
70221824 | 1669 | static struct private_thread_info * |
dc146f7c VP |
1670 | demand_private_info (ptid_t ptid) |
1671 | { | |
1672 | struct thread_info *info = find_thread_ptid (ptid); | |
1673 | ||
1674 | gdb_assert (info); | |
1675 | ||
fe978cb0 | 1676 | if (!info->priv) |
dc146f7c | 1677 | { |
fe978cb0 | 1678 | info->priv = xmalloc (sizeof (*(info->priv))); |
dc146f7c | 1679 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1680 | info->priv->core = -1; |
1681 | info->priv->extra = 0; | |
dc146f7c VP |
1682 | } |
1683 | ||
fe978cb0 | 1684 | return info->priv; |
dc146f7c VP |
1685 | } |
1686 | ||
74531fed PA |
1687 | /* Call this function as a result of |
1688 | 1) A halt indication (T packet) containing a thread id | |
1689 | 2) A direct query of currthread | |
0df8b418 | 1690 | 3) Successful execution of set thread */ |
74531fed PA |
1691 | |
1692 | static void | |
47f8a51d | 1693 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1694 | { |
47f8a51d | 1695 | rs->general_thread = currthread; |
74531fed PA |
1696 | } |
1697 | ||
89be2091 DJ |
1698 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1699 | it can simply pass through to the inferior without reporting. */ | |
1700 | ||
1701 | static void | |
94bedb42 TT |
1702 | remote_pass_signals (struct target_ops *self, |
1703 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1704 | { |
4082afcc | 1705 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1706 | { |
1707 | char *pass_packet, *p; | |
89be2091 | 1708 | int count = 0, i; |
747dc59d | 1709 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1710 | |
1711 | gdb_assert (numsigs < 256); | |
1712 | for (i = 0; i < numsigs; i++) | |
1713 | { | |
2455069d | 1714 | if (pass_signals[i]) |
89be2091 DJ |
1715 | count++; |
1716 | } | |
1717 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1718 | strcpy (pass_packet, "QPassSignals:"); | |
1719 | p = pass_packet + strlen (pass_packet); | |
1720 | for (i = 0; i < numsigs; i++) | |
1721 | { | |
2455069d | 1722 | if (pass_signals[i]) |
89be2091 DJ |
1723 | { |
1724 | if (i >= 16) | |
1725 | *p++ = tohex (i >> 4); | |
1726 | *p++ = tohex (i & 15); | |
1727 | if (count) | |
1728 | *p++ = ';'; | |
1729 | else | |
1730 | break; | |
1731 | count--; | |
1732 | } | |
1733 | } | |
1734 | *p = 0; | |
747dc59d | 1735 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1736 | { |
89be2091 DJ |
1737 | putpkt (pass_packet); |
1738 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1739 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1740 | if (rs->last_pass_packet) |
1741 | xfree (rs->last_pass_packet); | |
1742 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1743 | } |
1744 | else | |
1745 | xfree (pass_packet); | |
1746 | } | |
1747 | } | |
1748 | ||
9b224c5e PA |
1749 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1750 | signals it should pass through to the inferior when detaching. */ | |
1751 | ||
1752 | static void | |
daf5e9b6 TT |
1753 | remote_program_signals (struct target_ops *self, |
1754 | int numsigs, unsigned char *signals) | |
9b224c5e | 1755 | { |
4082afcc | 1756 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1757 | { |
1758 | char *packet, *p; | |
1759 | int count = 0, i; | |
5e4a05c4 | 1760 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1761 | |
1762 | gdb_assert (numsigs < 256); | |
1763 | for (i = 0; i < numsigs; i++) | |
1764 | { | |
1765 | if (signals[i]) | |
1766 | count++; | |
1767 | } | |
1768 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1769 | strcpy (packet, "QProgramSignals:"); | |
1770 | p = packet + strlen (packet); | |
1771 | for (i = 0; i < numsigs; i++) | |
1772 | { | |
1773 | if (signal_pass_state (i)) | |
1774 | { | |
1775 | if (i >= 16) | |
1776 | *p++ = tohex (i >> 4); | |
1777 | *p++ = tohex (i & 15); | |
1778 | if (count) | |
1779 | *p++ = ';'; | |
1780 | else | |
1781 | break; | |
1782 | count--; | |
1783 | } | |
1784 | } | |
1785 | *p = 0; | |
5e4a05c4 TT |
1786 | if (!rs->last_program_signals_packet |
1787 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1788 | { |
9b224c5e PA |
1789 | putpkt (packet); |
1790 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1791 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1792 | xfree (rs->last_program_signals_packet); |
1793 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1794 | } |
1795 | else | |
1796 | xfree (packet); | |
1797 | } | |
1798 | } | |
1799 | ||
79d7f229 PA |
1800 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1801 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1802 | thread. If GEN is set, set the general thread, if not, then set | |
1803 | the step/continue thread. */ | |
c906108c | 1804 | static void |
79d7f229 | 1805 | set_thread (struct ptid ptid, int gen) |
c906108c | 1806 | { |
d01949b6 | 1807 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1808 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1809 | char *buf = rs->buf; |
79d7f229 | 1810 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1811 | |
79d7f229 | 1812 | if (ptid_equal (state, ptid)) |
c906108c SS |
1813 | return; |
1814 | ||
79d7f229 PA |
1815 | *buf++ = 'H'; |
1816 | *buf++ = gen ? 'g' : 'c'; | |
1817 | if (ptid_equal (ptid, magic_null_ptid)) | |
1818 | xsnprintf (buf, endbuf - buf, "0"); | |
1819 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1820 | xsnprintf (buf, endbuf - buf, "0"); | |
1821 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1822 | xsnprintf (buf, endbuf - buf, "-1"); | |
1823 | else | |
82f73884 | 1824 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1825 | putpkt (rs->buf); |
6d820c5c | 1826 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1827 | if (gen) |
47f8a51d | 1828 | rs->general_thread = ptid; |
c906108c | 1829 | else |
47f8a51d | 1830 | rs->continue_thread = ptid; |
c906108c | 1831 | } |
79d7f229 PA |
1832 | |
1833 | static void | |
1834 | set_general_thread (struct ptid ptid) | |
1835 | { | |
1836 | set_thread (ptid, 1); | |
1837 | } | |
1838 | ||
1839 | static void | |
1840 | set_continue_thread (struct ptid ptid) | |
1841 | { | |
1842 | set_thread (ptid, 0); | |
1843 | } | |
1844 | ||
3c9c4b83 PA |
1845 | /* Change the remote current process. Which thread within the process |
1846 | ends up selected isn't important, as long as it is the same process | |
1847 | as what INFERIOR_PTID points to. | |
1848 | ||
1849 | This comes from that fact that there is no explicit notion of | |
1850 | "selected process" in the protocol. The selected process for | |
1851 | general operations is the process the selected general thread | |
1852 | belongs to. */ | |
1853 | ||
1854 | static void | |
1855 | set_general_process (void) | |
1856 | { | |
1857 | struct remote_state *rs = get_remote_state (); | |
1858 | ||
1859 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1860 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1861 | return; |
1862 | ||
1863 | /* We only need to change the remote current thread if it's pointing | |
1864 | at some other process. */ | |
47f8a51d | 1865 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1866 | set_general_thread (inferior_ptid); |
1867 | } | |
1868 | ||
c906108c | 1869 | \f |
7d1a114c PA |
1870 | /* Return nonzero if this is the main thread that we made up ourselves |
1871 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
1872 | |
1873 | static int | |
7d1a114c | 1874 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1875 | { |
6d820c5c | 1876 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1877 | char *p, *endp; |
c906108c | 1878 | |
c0a2216e PA |
1879 | if (ptid_equal (ptid, magic_null_ptid)) |
1880 | /* The main thread is always alive. */ | |
1881 | return 1; | |
1882 | ||
ba348170 | 1883 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
1884 | /* The main thread is always alive. This can happen after a |
1885 | vAttach, if the remote side doesn't support | |
1886 | multi-threading. */ | |
1887 | return 1; | |
1888 | ||
7d1a114c PA |
1889 | return 0; |
1890 | } | |
1891 | ||
1892 | /* Return nonzero if the thread PTID is still alive on the remote | |
1893 | system. */ | |
1894 | ||
1895 | static int | |
1896 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1897 | { | |
1898 | struct remote_state *rs = get_remote_state (); | |
1899 | char *p, *endp; | |
1900 | ||
1901 | /* Check if this is a thread that we made up ourselves to model | |
1902 | non-threaded targets as single-threaded. */ | |
1903 | if (remote_thread_always_alive (ops, ptid)) | |
1904 | return 1; | |
1905 | ||
82f73884 PA |
1906 | p = rs->buf; |
1907 | endp = rs->buf + get_remote_packet_size (); | |
1908 | ||
1909 | *p++ = 'T'; | |
1910 | write_ptid (p, endp, ptid); | |
1911 | ||
2e9f7625 | 1912 | putpkt (rs->buf); |
6d820c5c | 1913 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1914 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1915 | } |
1916 | ||
1917 | /* About these extended threadlist and threadinfo packets. They are | |
1918 | variable length packets but, the fields within them are often fixed | |
1919 | length. They are redundent enough to send over UDP as is the | |
1920 | remote protocol in general. There is a matching unit test module | |
1921 | in libstub. */ | |
1922 | ||
23860348 | 1923 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1924 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1925 | changable. */ |
cce74817 JM |
1926 | |
1927 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1928 | Plan to fix this. */ |
cce74817 | 1929 | |
23860348 | 1930 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1931 | |
9d1f7ab2 | 1932 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1933 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1934 | |
1935 | struct gdb_ext_thread_info | |
c5aa993b | 1936 | { |
23860348 | 1937 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1938 | int active; /* Has state interesting to GDB? |
23860348 | 1939 | regs, stack. */ |
2bc416ba | 1940 | char display[256]; /* Brief state display, name, |
cedea757 | 1941 | blocked/suspended. */ |
23860348 | 1942 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1943 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1944 | whatever. */ |
c5aa993b | 1945 | }; |
cce74817 JM |
1946 | |
1947 | /* The volume of remote transfers can be limited by submitting | |
1948 | a mask containing bits specifying the desired information. | |
1949 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1950 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1951 | |
1952 | #define TAG_THREADID 1 | |
1953 | #define TAG_EXISTS 2 | |
1954 | #define TAG_DISPLAY 4 | |
1955 | #define TAG_THREADNAME 8 | |
c5aa993b | 1956 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1957 | |
23860348 | 1958 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1959 | |
a14ed312 | 1960 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1961 | |
a14ed312 | 1962 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1963 | |
a14ed312 | 1964 | static char *pack_int (char *buf, int value); |
cce74817 | 1965 | |
a14ed312 | 1966 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1967 | |
a14ed312 | 1968 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1969 | |
23860348 | 1970 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1971 | |
23860348 | 1972 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1973 | |
23860348 | 1974 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1975 | |
23860348 | 1976 | static int threadref_to_int (threadref *ref); |
cce74817 | 1977 | |
23860348 | 1978 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1979 | |
23860348 | 1980 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1981 | |
2bc416ba | 1982 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1983 | threadref *id); |
cce74817 | 1984 | |
a14ed312 | 1985 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1986 | threadref *expectedref, |
a14ed312 KB |
1987 | struct gdb_ext_thread_info |
1988 | *info); | |
cce74817 JM |
1989 | |
1990 | ||
2bc416ba | 1991 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1992 | int fieldset, /*TAG mask */ |
a14ed312 | 1993 | struct gdb_ext_thread_info *info); |
cce74817 | 1994 | |
a14ed312 KB |
1995 | static char *pack_threadlist_request (char *pkt, int startflag, |
1996 | int threadcount, | |
23860348 | 1997 | threadref *nextthread); |
cce74817 | 1998 | |
a14ed312 KB |
1999 | static int parse_threadlist_response (char *pkt, |
2000 | int result_limit, | |
23860348 | 2001 | threadref *original_echo, |
2bc416ba | 2002 | threadref *resultlist, |
23860348 | 2003 | int *doneflag); |
cce74817 | 2004 | |
a14ed312 | 2005 | static int remote_get_threadlist (int startflag, |
23860348 | 2006 | threadref *nextthread, |
a14ed312 KB |
2007 | int result_limit, |
2008 | int *done, | |
2bc416ba | 2009 | int *result_count, |
23860348 | 2010 | threadref *threadlist); |
cce74817 | 2011 | |
23860348 | 2012 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2013 | |
a14ed312 KB |
2014 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2015 | void *context, int looplimit); | |
cce74817 | 2016 | |
23860348 | 2017 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2018 | |
82f73884 PA |
2019 | |
2020 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2021 | buffer we're allowed to write to. Returns | |
2022 | BUF+CHARACTERS_WRITTEN. */ | |
2023 | ||
2024 | static char * | |
2025 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2026 | { | |
2027 | int pid, tid; | |
2028 | struct remote_state *rs = get_remote_state (); | |
2029 | ||
2030 | if (remote_multi_process_p (rs)) | |
2031 | { | |
2032 | pid = ptid_get_pid (ptid); | |
2033 | if (pid < 0) | |
2034 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2035 | else | |
2036 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2037 | } | |
ba348170 | 2038 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2039 | if (tid < 0) |
2040 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2041 | else | |
2042 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2043 | ||
2044 | return buf; | |
2045 | } | |
2046 | ||
2047 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2048 | passed the last parsed char. Returns null_ptid on error. */ | |
2049 | ||
2050 | static ptid_t | |
2051 | read_ptid (char *buf, char **obuf) | |
2052 | { | |
2053 | char *p = buf; | |
2054 | char *pp; | |
2055 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2056 | |
2057 | if (*p == 'p') | |
2058 | { | |
2059 | /* Multi-process ptid. */ | |
2060 | pp = unpack_varlen_hex (p + 1, &pid); | |
2061 | if (*pp != '.') | |
b37520b6 | 2062 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2063 | |
2064 | p = pp; | |
2065 | pp = unpack_varlen_hex (p + 1, &tid); | |
2066 | if (obuf) | |
2067 | *obuf = pp; | |
ba348170 | 2068 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2069 | } |
2070 | ||
2071 | /* No multi-process. Just a tid. */ | |
2072 | pp = unpack_varlen_hex (p, &tid); | |
2073 | ||
2074 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2075 | what's in inferior_ptid, unless it's null at this point. If so, |
2076 | then since there's no way to know the pid of the reported | |
2077 | threads, use the magic number. */ | |
2078 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2079 | pid = ptid_get_pid (magic_null_ptid); | |
2080 | else | |
2081 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2082 | |
2083 | if (obuf) | |
2084 | *obuf = pp; | |
ba348170 | 2085 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2086 | } |
2087 | ||
c906108c | 2088 | static int |
fba45db2 | 2089 | stubhex (int ch) |
c906108c SS |
2090 | { |
2091 | if (ch >= 'a' && ch <= 'f') | |
2092 | return ch - 'a' + 10; | |
2093 | if (ch >= '0' && ch <= '9') | |
2094 | return ch - '0'; | |
2095 | if (ch >= 'A' && ch <= 'F') | |
2096 | return ch - 'A' + 10; | |
2097 | return -1; | |
2098 | } | |
2099 | ||
2100 | static int | |
fba45db2 | 2101 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2102 | { |
2103 | int nibble; | |
2104 | int retval = 0; | |
2105 | ||
2106 | while (fieldlength) | |
2107 | { | |
2108 | nibble = stubhex (*buff++); | |
2109 | retval |= nibble; | |
2110 | fieldlength--; | |
2111 | if (fieldlength) | |
2112 | retval = retval << 4; | |
2113 | } | |
2114 | return retval; | |
2115 | } | |
2116 | ||
c906108c | 2117 | static char * |
fba45db2 | 2118 | unpack_nibble (char *buf, int *val) |
c906108c | 2119 | { |
b7589f7d | 2120 | *val = fromhex (*buf++); |
c906108c SS |
2121 | return buf; |
2122 | } | |
2123 | ||
c906108c | 2124 | static char * |
fba45db2 | 2125 | unpack_byte (char *buf, int *value) |
c906108c SS |
2126 | { |
2127 | *value = stub_unpack_int (buf, 2); | |
2128 | return buf + 2; | |
2129 | } | |
2130 | ||
2131 | static char * | |
fba45db2 | 2132 | pack_int (char *buf, int value) |
c906108c SS |
2133 | { |
2134 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2135 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2136 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2137 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2138 | return buf; | |
2139 | } | |
2140 | ||
2141 | static char * | |
fba45db2 | 2142 | unpack_int (char *buf, int *value) |
c906108c SS |
2143 | { |
2144 | *value = stub_unpack_int (buf, 8); | |
2145 | return buf + 8; | |
2146 | } | |
2147 | ||
23860348 | 2148 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2149 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2150 | |
2151 | static char * | |
fba45db2 | 2152 | pack_string (char *pkt, char *string) |
c906108c SS |
2153 | { |
2154 | char ch; | |
2155 | int len; | |
2156 | ||
2157 | len = strlen (string); | |
2158 | if (len > 200) | |
23860348 | 2159 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2160 | pkt = pack_hex_byte (pkt, len); |
2161 | while (len-- > 0) | |
2162 | { | |
2163 | ch = *string++; | |
2164 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2165 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2166 | *pkt++ = ch; |
2167 | } | |
2168 | return pkt; | |
2169 | } | |
2170 | #endif /* 0 (unused) */ | |
2171 | ||
2172 | static char * | |
fba45db2 | 2173 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2174 | { |
2175 | while (length--) | |
2176 | *dest++ = *src++; | |
2177 | *dest = '\0'; | |
2178 | return src; | |
2179 | } | |
2180 | ||
2181 | static char * | |
fba45db2 | 2182 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2183 | { |
2184 | char *limit; | |
2185 | unsigned char *altid; | |
2186 | ||
2187 | altid = (unsigned char *) id; | |
2188 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2189 | while (pkt < limit) | |
2190 | pkt = pack_hex_byte (pkt, *altid++); | |
2191 | return pkt; | |
2192 | } | |
2193 | ||
2194 | ||
2195 | static char * | |
fba45db2 | 2196 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2197 | { |
2198 | char *altref; | |
2199 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2200 | int x, y; | |
2201 | ||
2202 | altref = (char *) id; | |
2203 | ||
2204 | while (inbuf < limit) | |
2205 | { | |
2206 | x = stubhex (*inbuf++); | |
2207 | y = stubhex (*inbuf++); | |
2208 | *altref++ = (x << 4) | y; | |
2209 | } | |
2210 | return inbuf; | |
2211 | } | |
2212 | ||
2213 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2214 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2215 | to use 64bit thread references internally. This is an adapter |
2216 | function. */ | |
2217 | ||
2218 | void | |
fba45db2 | 2219 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2220 | { |
2221 | unsigned char *scan; | |
2222 | ||
2223 | scan = (unsigned char *) id; | |
2224 | { | |
2225 | int i = 4; | |
2226 | while (i--) | |
2227 | *scan++ = 0; | |
2228 | } | |
2229 | *scan++ = (value >> 24) & 0xff; | |
2230 | *scan++ = (value >> 16) & 0xff; | |
2231 | *scan++ = (value >> 8) & 0xff; | |
2232 | *scan++ = (value & 0xff); | |
2233 | } | |
2234 | ||
2235 | static int | |
fba45db2 | 2236 | threadref_to_int (threadref *ref) |
c906108c SS |
2237 | { |
2238 | int i, value = 0; | |
2239 | unsigned char *scan; | |
2240 | ||
cfd77fa1 | 2241 | scan = *ref; |
c906108c SS |
2242 | scan += 4; |
2243 | i = 4; | |
2244 | while (i-- > 0) | |
2245 | value = (value << 8) | ((*scan++) & 0xff); | |
2246 | return value; | |
2247 | } | |
2248 | ||
2249 | static void | |
fba45db2 | 2250 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2251 | { |
2252 | int i; | |
2253 | unsigned char *csrc, *cdest; | |
2254 | ||
2255 | csrc = (unsigned char *) src; | |
2256 | cdest = (unsigned char *) dest; | |
2257 | i = 8; | |
2258 | while (i--) | |
2259 | *cdest++ = *csrc++; | |
2260 | } | |
2261 | ||
2262 | static int | |
fba45db2 | 2263 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2264 | { |
23860348 | 2265 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2266 | #if 0 |
2267 | unsigned char *srcp, *destp; | |
2268 | int i, result; | |
2269 | srcp = (char *) src; | |
2270 | destp = (char *) dest; | |
2271 | ||
2272 | result = 1; | |
2273 | while (i-- > 0) | |
2274 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2275 | return result; | |
2276 | #endif | |
2277 | return 1; | |
2278 | } | |
2279 | ||
2280 | /* | |
c5aa993b JM |
2281 | threadid:1, # always request threadid |
2282 | context_exists:2, | |
2283 | display:4, | |
2284 | unique_name:8, | |
2285 | more_display:16 | |
2286 | */ | |
c906108c SS |
2287 | |
2288 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2289 | ||
2290 | static char * | |
fba45db2 | 2291 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2292 | { |
23860348 MS |
2293 | *pkt++ = 'q'; /* Info Query */ |
2294 | *pkt++ = 'P'; /* process or thread info */ | |
2295 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2296 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2297 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2298 | return pkt; |
2299 | } | |
2300 | ||
23860348 | 2301 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2302 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2303 | add more fields as time goes by. */ |
c906108c | 2304 | |
23860348 | 2305 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2306 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2307 | fetch registers and its stack? */ |
c5aa993b | 2308 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2309 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2310 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2311 | the process. */ |
c906108c SS |
2312 | |
2313 | static int | |
fba45db2 KB |
2314 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2315 | struct gdb_ext_thread_info *info) | |
c906108c | 2316 | { |
d01949b6 | 2317 | struct remote_state *rs = get_remote_state (); |
c906108c | 2318 | int mask, length; |
cfd77fa1 | 2319 | int tag; |
c906108c | 2320 | threadref ref; |
6d820c5c | 2321 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2322 | int retval = 1; |
2323 | ||
23860348 | 2324 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2325 | info->active = 0; |
2326 | info->display[0] = '\0'; | |
2327 | info->shortname[0] = '\0'; | |
2328 | info->more_display[0] = '\0'; | |
2329 | ||
23860348 MS |
2330 | /* Assume the characters indicating the packet type have been |
2331 | stripped. */ | |
c906108c SS |
2332 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2333 | pkt = unpack_threadid (pkt, &ref); | |
2334 | ||
2335 | if (mask == 0) | |
8a3fe4f8 | 2336 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2337 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2338 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2339 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2340 | return 0; |
2341 | } | |
2342 | copy_threadref (&info->threadid, &ref); | |
2343 | ||
23860348 | 2344 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2345 | |
23860348 MS |
2346 | /* Packets are terminated with nulls. */ |
2347 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2348 | { |
2349 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2350 | pkt = unpack_byte (pkt, &length); /* length */ |
2351 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2352 | { |
8a3fe4f8 | 2353 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2354 | retval = 0; |
2355 | break; | |
2356 | } | |
2357 | if (tag == TAG_THREADID) | |
2358 | { | |
2359 | if (length != 16) | |
2360 | { | |
8a3fe4f8 | 2361 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2362 | retval = 0; |
2363 | break; | |
2364 | } | |
2365 | pkt = unpack_threadid (pkt, &ref); | |
2366 | mask = mask & ~TAG_THREADID; | |
2367 | continue; | |
2368 | } | |
2369 | if (tag == TAG_EXISTS) | |
2370 | { | |
2371 | info->active = stub_unpack_int (pkt, length); | |
2372 | pkt += length; | |
2373 | mask = mask & ~(TAG_EXISTS); | |
2374 | if (length > 8) | |
2375 | { | |
8a3fe4f8 | 2376 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2377 | retval = 0; |
2378 | break; | |
2379 | } | |
2380 | continue; | |
2381 | } | |
2382 | if (tag == TAG_THREADNAME) | |
2383 | { | |
2384 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2385 | mask = mask & ~TAG_THREADNAME; | |
2386 | continue; | |
2387 | } | |
2388 | if (tag == TAG_DISPLAY) | |
2389 | { | |
2390 | pkt = unpack_string (pkt, &info->display[0], length); | |
2391 | mask = mask & ~TAG_DISPLAY; | |
2392 | continue; | |
2393 | } | |
2394 | if (tag == TAG_MOREDISPLAY) | |
2395 | { | |
2396 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2397 | mask = mask & ~TAG_MOREDISPLAY; | |
2398 | continue; | |
2399 | } | |
8a3fe4f8 | 2400 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2401 | break; /* Not a tag we know about. */ |
c906108c SS |
2402 | } |
2403 | return retval; | |
2404 | } | |
2405 | ||
2406 | static int | |
fba45db2 KB |
2407 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2408 | struct gdb_ext_thread_info *info) | |
c906108c | 2409 | { |
d01949b6 | 2410 | struct remote_state *rs = get_remote_state (); |
c906108c | 2411 | int result; |
c906108c | 2412 | |
2e9f7625 DJ |
2413 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2414 | putpkt (rs->buf); | |
6d820c5c | 2415 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2416 | |
2417 | if (rs->buf[0] == '\0') | |
2418 | return 0; | |
2419 | ||
2e9f7625 | 2420 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2421 | threadid, info); |
c906108c SS |
2422 | return result; |
2423 | } | |
2424 | ||
c906108c SS |
2425 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2426 | ||
2427 | static char * | |
fba45db2 KB |
2428 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2429 | threadref *nextthread) | |
c906108c SS |
2430 | { |
2431 | *pkt++ = 'q'; /* info query packet */ | |
2432 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2433 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2434 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2435 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2436 | *pkt = '\0'; | |
2437 | return pkt; | |
2438 | } | |
2439 | ||
2440 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2441 | ||
2442 | static int | |
fba45db2 KB |
2443 | parse_threadlist_response (char *pkt, int result_limit, |
2444 | threadref *original_echo, threadref *resultlist, | |
2445 | int *doneflag) | |
c906108c | 2446 | { |
d01949b6 | 2447 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2448 | char *limit; |
2449 | int count, resultcount, done; | |
2450 | ||
2451 | resultcount = 0; | |
2452 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2453 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2454 | /* done parse past here */ |
c906108c SS |
2455 | pkt = unpack_byte (pkt, &count); /* count field */ |
2456 | pkt = unpack_nibble (pkt, &done); | |
2457 | /* The first threadid is the argument threadid. */ | |
2458 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2459 | while ((count-- > 0) && (pkt < limit)) | |
2460 | { | |
2461 | pkt = unpack_threadid (pkt, resultlist++); | |
2462 | if (resultcount++ >= result_limit) | |
2463 | break; | |
2464 | } | |
2465 | if (doneflag) | |
2466 | *doneflag = done; | |
2467 | return resultcount; | |
2468 | } | |
2469 | ||
6dc54d91 PA |
2470 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2471 | qL packet is not supported, 0 on error and 1 on success. */ | |
2472 | ||
c906108c | 2473 | static int |
fba45db2 KB |
2474 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2475 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2476 | { |
d01949b6 | 2477 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2478 | int result = 1; |
2479 | ||
23860348 | 2480 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2481 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2482 | >= get_remote_packet_size ()) | |
ea9c271d | 2483 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2484 | |
6d820c5c DJ |
2485 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2486 | putpkt (rs->buf); | |
2487 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2488 | if (*rs->buf == '\0') |
6dc54d91 PA |
2489 | { |
2490 | /* Packet not supported. */ | |
2491 | return -1; | |
2492 | } | |
2493 | ||
2494 | *result_count = | |
2495 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2496 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2497 | |
0d031856 | 2498 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2499 | { |
23860348 MS |
2500 | /* FIXME: This is a good reason to drop the packet. */ |
2501 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2502 | /* Possabilities : |
2503 | retransmit immediatly - race conditions | |
2504 | retransmit after timeout - yes | |
2505 | exit | |
2506 | wait for packet, then exit | |
2507 | */ | |
8a3fe4f8 | 2508 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2509 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2510 | } |
2511 | if (*result_count <= 0) | |
2512 | { | |
2513 | if (*done != 1) | |
2514 | { | |
8a3fe4f8 | 2515 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2516 | result = 0; |
2517 | } | |
2518 | return result; /* break; */ | |
2519 | } | |
2520 | if (*result_count > result_limit) | |
2521 | { | |
2522 | *result_count = 0; | |
8a3fe4f8 | 2523 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2524 | return 0; |
2525 | } | |
2526 | return result; | |
2527 | } | |
2528 | ||
6dc54d91 PA |
2529 | /* Fetch the list of remote threads, with the qL packet, and call |
2530 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2531 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2532 | STEPFUNCTION returns false. If the packet is not supported, | |
2533 | returns -1. */ | |
c906108c | 2534 | |
c906108c | 2535 | static int |
fba45db2 KB |
2536 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2537 | int looplimit) | |
c906108c | 2538 | { |
0d031856 | 2539 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2540 | int done, i, result_count; |
2541 | int startflag = 1; | |
2542 | int result = 1; | |
2543 | int loopcount = 0; | |
c906108c SS |
2544 | |
2545 | done = 0; | |
2546 | while (!done) | |
2547 | { | |
2548 | if (loopcount++ > looplimit) | |
2549 | { | |
2550 | result = 0; | |
8a3fe4f8 | 2551 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2552 | break; |
2553 | } | |
6dc54d91 PA |
2554 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2555 | MAXTHREADLISTRESULTS, | |
2556 | &done, &result_count, | |
2557 | rs->resultthreadlist); | |
2558 | if (result <= 0) | |
2559 | break; | |
23860348 | 2560 | /* Clear for later iterations. */ |
c906108c SS |
2561 | startflag = 0; |
2562 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2563 | if (result_count >= 1) | |
0d031856 TT |
2564 | copy_threadref (&rs->nextthread, |
2565 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2566 | i = 0; |
2567 | while (result_count--) | |
6dc54d91 PA |
2568 | { |
2569 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2570 | { | |
2571 | result = 0; | |
2572 | break; | |
2573 | } | |
2574 | } | |
c906108c SS |
2575 | } |
2576 | return result; | |
2577 | } | |
2578 | ||
6dc54d91 PA |
2579 | /* A thread found on the remote target. */ |
2580 | ||
2581 | typedef struct thread_item | |
2582 | { | |
2583 | /* The thread's PTID. */ | |
2584 | ptid_t ptid; | |
2585 | ||
2586 | /* The thread's extra info. May be NULL. */ | |
2587 | char *extra; | |
2588 | ||
2589 | /* The core the thread was running on. -1 if not known. */ | |
2590 | int core; | |
2591 | } thread_item_t; | |
2592 | DEF_VEC_O(thread_item_t); | |
2593 | ||
2594 | /* Context passed around to the various methods listing remote | |
2595 | threads. As new threads are found, they're added to the ITEMS | |
2596 | vector. */ | |
2597 | ||
2598 | struct threads_listing_context | |
2599 | { | |
2600 | /* The threads found on the remote target. */ | |
2601 | VEC (thread_item_t) *items; | |
2602 | }; | |
2603 | ||
80134cf5 PA |
2604 | /* Discard the contents of the constructed thread listing context. */ |
2605 | ||
2606 | static void | |
2607 | clear_threads_listing_context (void *p) | |
2608 | { | |
2609 | struct threads_listing_context *context = p; | |
2610 | int i; | |
2611 | struct thread_item *item; | |
2612 | ||
2613 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2614 | xfree (item->extra); | |
2615 | ||
2616 | VEC_free (thread_item_t, context->items); | |
2617 | } | |
2618 | ||
c906108c | 2619 | static int |
6dc54d91 | 2620 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2621 | { |
6dc54d91 PA |
2622 | struct threads_listing_context *context = data; |
2623 | struct thread_item item; | |
79d7f229 | 2624 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2625 | |
6dc54d91 PA |
2626 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2627 | item.core = -1; | |
2628 | item.extra = NULL; | |
2629 | ||
2630 | VEC_safe_push (thread_item_t, context->items, &item); | |
2631 | ||
c906108c SS |
2632 | return 1; /* continue iterator */ |
2633 | } | |
2634 | ||
2635 | #define CRAZY_MAX_THREADS 1000 | |
2636 | ||
39f77062 KB |
2637 | static ptid_t |
2638 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2639 | { |
d01949b6 | 2640 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2641 | |
2642 | putpkt ("qC"); | |
6d820c5c | 2643 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2644 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2645 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2646 | else |
2647 | return oldpid; | |
2648 | } | |
2649 | ||
6dc54d91 | 2650 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2651 | |
6dc54d91 PA |
2652 | static int |
2653 | remote_get_threads_with_ql (struct target_ops *ops, | |
2654 | struct threads_listing_context *context) | |
c906108c | 2655 | { |
6dc54d91 PA |
2656 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2657 | CRAZY_MAX_THREADS) >= 0) | |
2658 | return 1; | |
2659 | ||
2660 | return 0; | |
c906108c SS |
2661 | } |
2662 | ||
dc146f7c VP |
2663 | #if defined(HAVE_LIBEXPAT) |
2664 | ||
dc146f7c VP |
2665 | static void |
2666 | start_thread (struct gdb_xml_parser *parser, | |
2667 | const struct gdb_xml_element *element, | |
2668 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2669 | { | |
6dc54d91 | 2670 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2671 | |
2672 | struct thread_item item; | |
2673 | char *id; | |
3d2c1d41 | 2674 | struct gdb_xml_value *attr; |
dc146f7c | 2675 | |
3d2c1d41 | 2676 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2677 | item.ptid = read_ptid (id, NULL); |
2678 | ||
3d2c1d41 PA |
2679 | attr = xml_find_attribute (attributes, "core"); |
2680 | if (attr != NULL) | |
2681 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2682 | else |
2683 | item.core = -1; | |
2684 | ||
2685 | item.extra = 0; | |
2686 | ||
2687 | VEC_safe_push (thread_item_t, data->items, &item); | |
2688 | } | |
2689 | ||
2690 | static void | |
2691 | end_thread (struct gdb_xml_parser *parser, | |
2692 | const struct gdb_xml_element *element, | |
2693 | void *user_data, const char *body_text) | |
2694 | { | |
6dc54d91 | 2695 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2696 | |
2697 | if (body_text && *body_text) | |
2ae2a0b7 | 2698 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2699 | } |
2700 | ||
2701 | const struct gdb_xml_attribute thread_attributes[] = { | |
2702 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2703 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2704 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2705 | }; | |
2706 | ||
2707 | const struct gdb_xml_element thread_children[] = { | |
2708 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2709 | }; | |
2710 | ||
2711 | const struct gdb_xml_element threads_children[] = { | |
2712 | { "thread", thread_attributes, thread_children, | |
2713 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2714 | start_thread, end_thread }, | |
2715 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2716 | }; | |
2717 | ||
2718 | const struct gdb_xml_element threads_elements[] = { | |
2719 | { "threads", NULL, threads_children, | |
2720 | GDB_XML_EF_NONE, NULL, NULL }, | |
2721 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2722 | }; | |
2723 | ||
2724 | #endif | |
2725 | ||
6dc54d91 | 2726 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2727 | |
6dc54d91 PA |
2728 | static int |
2729 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2730 | struct threads_listing_context *context) | |
0f71a2f6 | 2731 | { |
dc146f7c | 2732 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2733 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2734 | { |
6dc54d91 | 2735 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2736 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2737 | |
6dc54d91 | 2738 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2739 | { |
6dc54d91 PA |
2740 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2741 | threads_elements, xml, context); | |
dc146f7c VP |
2742 | } |
2743 | ||
2744 | do_cleanups (back_to); | |
6dc54d91 | 2745 | return 1; |
dc146f7c VP |
2746 | } |
2747 | #endif | |
2748 | ||
6dc54d91 PA |
2749 | return 0; |
2750 | } | |
2751 | ||
2752 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2753 | ||
2754 | static int | |
2755 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2756 | struct threads_listing_context *context) | |
2757 | { | |
2758 | struct remote_state *rs = get_remote_state (); | |
2759 | ||
b80fafe3 | 2760 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2761 | { |
6dc54d91 PA |
2762 | char *bufp; |
2763 | ||
9d1f7ab2 | 2764 | putpkt ("qfThreadInfo"); |
6d820c5c | 2765 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2766 | bufp = rs->buf; |
9d1f7ab2 | 2767 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2768 | { |
9d1f7ab2 MS |
2769 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2770 | { | |
2771 | do | |
2772 | { | |
6dc54d91 PA |
2773 | struct thread_item item; |
2774 | ||
2775 | item.ptid = read_ptid (bufp, &bufp); | |
2776 | item.core = -1; | |
2777 | item.extra = NULL; | |
2778 | ||
2779 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
2780 | } |
2781 | while (*bufp++ == ','); /* comma-separated list */ | |
2782 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2783 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 2784 | bufp = rs->buf; |
9d1f7ab2 | 2785 | } |
6dc54d91 PA |
2786 | return 1; |
2787 | } | |
2788 | else | |
2789 | { | |
2790 | /* Packet not recognized. */ | |
2791 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
2792 | } |
2793 | } | |
2794 | ||
6dc54d91 PA |
2795 | return 0; |
2796 | } | |
2797 | ||
e8032dde | 2798 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
2799 | targets. */ |
2800 | ||
2801 | static void | |
e8032dde | 2802 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
2803 | { |
2804 | struct remote_state *rs = get_remote_state (); | |
2805 | struct threads_listing_context context; | |
2806 | struct cleanup *old_chain; | |
ab970af1 | 2807 | int got_list = 0; |
e8032dde | 2808 | |
6dc54d91 PA |
2809 | context.items = NULL; |
2810 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2811 | ||
2812 | /* We have a few different mechanisms to fetch the thread list. Try | |
2813 | them all, starting with the most preferred one first, falling | |
2814 | back to older methods. */ | |
2815 | if (remote_get_threads_with_qxfer (ops, &context) | |
2816 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2817 | || remote_get_threads_with_ql (ops, &context)) | |
2818 | { | |
2819 | int i; | |
2820 | struct thread_item *item; | |
ab970af1 PA |
2821 | struct thread_info *tp, *tmp; |
2822 | ||
2823 | got_list = 1; | |
2824 | ||
7d1a114c PA |
2825 | if (VEC_empty (thread_item_t, context.items) |
2826 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2827 | { | |
2828 | /* Some targets don't really support threads, but still | |
2829 | reply an (empty) thread list in response to the thread | |
2830 | listing packets, instead of replying "packet not | |
2831 | supported". Exit early so we don't delete the main | |
2832 | thread. */ | |
2833 | do_cleanups (old_chain); | |
2834 | return; | |
2835 | } | |
2836 | ||
ab970af1 PA |
2837 | /* CONTEXT now holds the current thread list on the remote |
2838 | target end. Delete GDB-side threads no longer found on the | |
2839 | target. */ | |
2840 | ALL_NON_EXITED_THREADS_SAFE (tp, tmp) | |
2841 | { | |
2842 | for (i = 0; | |
2843 | VEC_iterate (thread_item_t, context.items, i, item); | |
2844 | ++i) | |
2845 | { | |
2846 | if (ptid_equal (item->ptid, tp->ptid)) | |
2847 | break; | |
2848 | } | |
2849 | ||
2850 | if (i == VEC_length (thread_item_t, context.items)) | |
2851 | { | |
2852 | /* Not found. */ | |
2853 | delete_thread (tp->ptid); | |
2854 | } | |
2855 | } | |
74531fed | 2856 | |
ab970af1 | 2857 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
2858 | for (i = 0; |
2859 | VEC_iterate (thread_item_t, context.items, i, item); | |
2860 | ++i) | |
2861 | { | |
2862 | if (!ptid_equal (item->ptid, null_ptid)) | |
2863 | { | |
2864 | struct private_thread_info *info; | |
2865 | /* In non-stop mode, we assume new found threads are | |
2866 | running until proven otherwise with a stop reply. In | |
2867 | all-stop, we can only get here if all threads are | |
2868 | stopped. */ | |
2869 | int running = non_stop ? 1 : 0; | |
2870 | ||
2871 | remote_notice_new_inferior (item->ptid, running); | |
2872 | ||
2873 | info = demand_private_info (item->ptid); | |
2874 | info->core = item->core; | |
2875 | info->extra = item->extra; | |
2876 | item->extra = NULL; | |
2877 | } | |
2878 | } | |
2879 | } | |
2880 | ||
ab970af1 PA |
2881 | if (!got_list) |
2882 | { | |
2883 | /* If no thread listing method is supported, then query whether | |
2884 | each known thread is alive, one by one, with the T packet. | |
2885 | If the target doesn't support threads at all, then this is a | |
2886 | no-op. See remote_thread_alive. */ | |
2887 | prune_threads (); | |
2888 | } | |
2889 | ||
6dc54d91 | 2890 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2891 | } |
2892 | ||
802188a7 | 2893 | /* |
9d1f7ab2 MS |
2894 | * Collect a descriptive string about the given thread. |
2895 | * The target may say anything it wants to about the thread | |
2896 | * (typically info about its blocked / runnable state, name, etc.). | |
2897 | * This string will appear in the info threads display. | |
802188a7 | 2898 | * |
9d1f7ab2 MS |
2899 | * Optional: targets are not required to implement this function. |
2900 | */ | |
2901 | ||
2902 | static char * | |
c15906d8 | 2903 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 2904 | { |
d01949b6 | 2905 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2906 | int result; |
2907 | int set; | |
2908 | threadref id; | |
2909 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2910 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2911 | int n = 0; /* position in display_buf */ |
2912 | ||
5d93a237 | 2913 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 2914 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2915 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2916 | |
60e569b9 | 2917 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 2918 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
2919 | /* This is the main thread which was added by GDB. The remote |
2920 | server doesn't know about it. */ | |
2921 | return NULL; | |
2922 | ||
4082afcc | 2923 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
2924 | { |
2925 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2926 | |
fe978cb0 PA |
2927 | if (info && info->priv) |
2928 | return info->priv->extra; | |
dc146f7c VP |
2929 | else |
2930 | return NULL; | |
2931 | } | |
2932 | ||
b80fafe3 | 2933 | if (rs->use_threadextra_query) |
9d1f7ab2 | 2934 | { |
82f73884 PA |
2935 | char *b = rs->buf; |
2936 | char *endb = rs->buf + get_remote_packet_size (); | |
2937 | ||
2938 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2939 | b += strlen (b); | |
2940 | write_ptid (b, endb, tp->ptid); | |
2941 | ||
2e9f7625 | 2942 | putpkt (rs->buf); |
6d820c5c | 2943 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2944 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2945 | { |
2e9f7625 DJ |
2946 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2947 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2948 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2949 | return display_buf; |
2950 | } | |
0f71a2f6 | 2951 | } |
9d1f7ab2 MS |
2952 | |
2953 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 2954 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
2955 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
2956 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 2957 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
2958 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2959 | if (threadinfo.active) | |
0f71a2f6 | 2960 | { |
9d1f7ab2 | 2961 | if (*threadinfo.shortname) |
2bc416ba | 2962 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2963 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2964 | if (*threadinfo.display) |
2bc416ba | 2965 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2966 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2967 | if (*threadinfo.more_display) |
2bc416ba | 2968 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2969 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2970 | |
2971 | if (n > 0) | |
c5aa993b | 2972 | { |
23860348 | 2973 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2974 | if (',' == display_buf[n-1]) |
2975 | display_buf[n-1] = ' '; | |
2976 | return display_buf; | |
c5aa993b | 2977 | } |
0f71a2f6 | 2978 | } |
9d1f7ab2 | 2979 | return NULL; |
0f71a2f6 | 2980 | } |
c906108c | 2981 | \f |
c5aa993b | 2982 | |
0fb4aa4b | 2983 | static int |
61fc905d | 2984 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
2985 | struct static_tracepoint_marker *marker) |
2986 | { | |
2987 | struct remote_state *rs = get_remote_state (); | |
2988 | char *p = rs->buf; | |
2989 | ||
bba74b36 | 2990 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2991 | p += strlen (p); |
2992 | p += hexnumstr (p, addr); | |
2993 | putpkt (rs->buf); | |
2994 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2995 | p = rs->buf; | |
2996 | ||
2997 | if (*p == 'E') | |
2998 | error (_("Remote failure reply: %s"), p); | |
2999 | ||
3000 | if (*p++ == 'm') | |
3001 | { | |
3002 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3003 | return 1; | |
3004 | } | |
3005 | ||
3006 | return 0; | |
3007 | } | |
3008 | ||
0fb4aa4b | 3009 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3010 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3011 | const char *strid) | |
0fb4aa4b PA |
3012 | { |
3013 | struct remote_state *rs = get_remote_state (); | |
3014 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3015 | struct static_tracepoint_marker *marker = NULL; | |
3016 | struct cleanup *old_chain; | |
3017 | char *p; | |
3018 | ||
3019 | /* Ask for a first packet of static tracepoint marker | |
3020 | definition. */ | |
3021 | putpkt ("qTfSTM"); | |
3022 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3023 | p = rs->buf; | |
3024 | if (*p == 'E') | |
3025 | error (_("Remote failure reply: %s"), p); | |
3026 | ||
3027 | old_chain = make_cleanup (free_current_marker, &marker); | |
3028 | ||
3029 | while (*p++ == 'm') | |
3030 | { | |
3031 | if (marker == NULL) | |
3032 | marker = XCNEW (struct static_tracepoint_marker); | |
3033 | ||
3034 | do | |
3035 | { | |
3036 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3037 | ||
3038 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3039 | { | |
3040 | VEC_safe_push (static_tracepoint_marker_p, | |
3041 | markers, marker); | |
3042 | marker = NULL; | |
3043 | } | |
3044 | else | |
3045 | { | |
3046 | release_static_tracepoint_marker (marker); | |
3047 | memset (marker, 0, sizeof (*marker)); | |
3048 | } | |
3049 | } | |
3050 | while (*p++ == ','); /* comma-separated list */ | |
3051 | /* Ask for another packet of static tracepoint definition. */ | |
3052 | putpkt ("qTsSTM"); | |
3053 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3054 | p = rs->buf; | |
3055 | } | |
3056 | ||
3057 | do_cleanups (old_chain); | |
3058 | return markers; | |
3059 | } | |
3060 | ||
3061 | \f | |
10760264 JB |
3062 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3063 | ||
3064 | static ptid_t | |
1e6b91a4 | 3065 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3066 | { |
ba348170 | 3067 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3068 | } |
3069 | \f | |
3070 | ||
24b06219 | 3071 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3072 | |
3073 | static void | |
fba45db2 | 3074 | extended_remote_restart (void) |
c906108c | 3075 | { |
d01949b6 | 3076 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3077 | |
3078 | /* Send the restart command; for reasons I don't understand the | |
3079 | remote side really expects a number after the "R". */ | |
ea9c271d | 3080 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3081 | putpkt (rs->buf); |
c906108c | 3082 | |
ad9a8f3f | 3083 | remote_fileio_reset (); |
c906108c SS |
3084 | } |
3085 | \f | |
3086 | /* Clean up connection to a remote debugger. */ | |
3087 | ||
c906108c | 3088 | static void |
de90e03d | 3089 | remote_close (struct target_ops *self) |
c906108c | 3090 | { |
5d93a237 TT |
3091 | struct remote_state *rs = get_remote_state (); |
3092 | ||
3093 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3094 | return; /* already closed */ |
3095 | ||
3096 | /* Make sure we leave stdin registered in the event loop, and we | |
3097 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3098 | remote_terminal_ours (self); |
ce5ce7ed | 3099 | |
5d93a237 TT |
3100 | serial_close (rs->remote_desc); |
3101 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3102 | |
3103 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3104 | of all the inferiors and their threads we were controlling. |
3105 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3106 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3107 | inferior_ptid = null_ptid; |
f67fd822 | 3108 | discard_all_inferiors (); |
ce5ce7ed | 3109 | |
f48ff2a7 YQ |
3110 | /* We are closing the remote target, so we should discard |
3111 | everything of this target. */ | |
bcc75809 | 3112 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3113 | |
3114 | if (remote_async_inferior_event_token) | |
3115 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3116 | |
5965e028 | 3117 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3118 | |
3119 | trace_reset_local_state (); | |
c906108c SS |
3120 | } |
3121 | ||
23860348 | 3122 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3123 | |
3124 | static void | |
fba45db2 | 3125 | get_offsets (void) |
c906108c | 3126 | { |
d01949b6 | 3127 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3128 | char *buf; |
085dd6e6 | 3129 | char *ptr; |
31d99776 DJ |
3130 | int lose, num_segments = 0, do_sections, do_segments; |
3131 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3132 | struct section_offsets *offs; |
31d99776 DJ |
3133 | struct symfile_segment_data *data; |
3134 | ||
3135 | if (symfile_objfile == NULL) | |
3136 | return; | |
c906108c SS |
3137 | |
3138 | putpkt ("qOffsets"); | |
6d820c5c | 3139 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3140 | buf = rs->buf; |
c906108c SS |
3141 | |
3142 | if (buf[0] == '\000') | |
3143 | return; /* Return silently. Stub doesn't support | |
23860348 | 3144 | this command. */ |
c906108c SS |
3145 | if (buf[0] == 'E') |
3146 | { | |
8a3fe4f8 | 3147 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3148 | return; |
3149 | } | |
3150 | ||
3151 | /* Pick up each field in turn. This used to be done with scanf, but | |
3152 | scanf will make trouble if CORE_ADDR size doesn't match | |
3153 | conversion directives correctly. The following code will work | |
3154 | with any size of CORE_ADDR. */ | |
3155 | text_addr = data_addr = bss_addr = 0; | |
3156 | ptr = buf; | |
3157 | lose = 0; | |
3158 | ||
61012eef | 3159 | if (startswith (ptr, "Text=")) |
c906108c SS |
3160 | { |
3161 | ptr += 5; | |
3162 | /* Don't use strtol, could lose on big values. */ | |
3163 | while (*ptr && *ptr != ';') | |
3164 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3165 | |
61012eef | 3166 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3167 | { |
3168 | ptr += 6; | |
3169 | while (*ptr && *ptr != ';') | |
3170 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3171 | } | |
3172 | else | |
3173 | lose = 1; | |
3174 | ||
61012eef | 3175 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3176 | { |
3177 | ptr += 5; | |
3178 | while (*ptr && *ptr != ';') | |
3179 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3180 | |
31d99776 DJ |
3181 | if (bss_addr != data_addr) |
3182 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3183 | } | |
3184 | else | |
3185 | lose = 1; | |
3186 | } | |
61012eef | 3187 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3188 | { |
31d99776 DJ |
3189 | ptr += 8; |
3190 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3191 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3192 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3193 | num_segments = 1; | |
3194 | ||
61012eef | 3195 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3196 | { |
3197 | ptr += 9; | |
3198 | while (*ptr && *ptr != ';') | |
3199 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3200 | num_segments++; | |
3201 | } | |
c906108c SS |
3202 | } |
3203 | else | |
3204 | lose = 1; | |
3205 | ||
3206 | if (lose) | |
8a3fe4f8 | 3207 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3208 | else if (*ptr != '\0') |
3209 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3210 | |
802188a7 | 3211 | offs = ((struct section_offsets *) |
a39a16c4 | 3212 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3213 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3214 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3215 | |
31d99776 DJ |
3216 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3217 | do_segments = (data != NULL); | |
3218 | do_sections = num_segments == 0; | |
c906108c | 3219 | |
28c32713 | 3220 | if (num_segments > 0) |
31d99776 | 3221 | { |
31d99776 DJ |
3222 | segments[0] = text_addr; |
3223 | segments[1] = data_addr; | |
3224 | } | |
28c32713 JB |
3225 | /* If we have two segments, we can still try to relocate everything |
3226 | by assuming that the .text and .data offsets apply to the whole | |
3227 | text and data segments. Convert the offsets given in the packet | |
3228 | to base addresses for symfile_map_offsets_to_segments. */ | |
3229 | else if (data && data->num_segments == 2) | |
3230 | { | |
3231 | segments[0] = data->segment_bases[0] + text_addr; | |
3232 | segments[1] = data->segment_bases[1] + data_addr; | |
3233 | num_segments = 2; | |
3234 | } | |
8d385431 DJ |
3235 | /* If the object file has only one segment, assume that it is text |
3236 | rather than data; main programs with no writable data are rare, | |
3237 | but programs with no code are useless. Of course the code might | |
3238 | have ended up in the data segment... to detect that we would need | |
3239 | the permissions here. */ | |
3240 | else if (data && data->num_segments == 1) | |
3241 | { | |
3242 | segments[0] = data->segment_bases[0] + text_addr; | |
3243 | num_segments = 1; | |
3244 | } | |
28c32713 JB |
3245 | /* There's no way to relocate by segment. */ |
3246 | else | |
3247 | do_segments = 0; | |
31d99776 DJ |
3248 | |
3249 | if (do_segments) | |
3250 | { | |
3251 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3252 | offs, num_segments, segments); | |
3253 | ||
3254 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3255 | error (_("Can not handle qOffsets TextSeg " |
3256 | "response with this symbol file")); | |
31d99776 DJ |
3257 | |
3258 | if (ret > 0) | |
3259 | do_sections = 0; | |
3260 | } | |
c906108c | 3261 | |
9ef895d6 DJ |
3262 | if (data) |
3263 | free_symfile_segment_data (data); | |
31d99776 DJ |
3264 | |
3265 | if (do_sections) | |
3266 | { | |
3267 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3268 | ||
3e43a32a MS |
3269 | /* This is a temporary kludge to force data and bss to use the |
3270 | same offsets because that's what nlmconv does now. The real | |
3271 | solution requires changes to the stub and remote.c that I | |
3272 | don't have time to do right now. */ | |
31d99776 DJ |
3273 | |
3274 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3275 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3276 | } | |
c906108c SS |
3277 | |
3278 | objfile_relocate (symfile_objfile, offs); | |
3279 | } | |
3280 | ||
74531fed PA |
3281 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3282 | threads we know are stopped already. This is used during the | |
3283 | initial remote connection in non-stop mode --- threads that are | |
3284 | reported as already being stopped are left stopped. */ | |
3285 | ||
3286 | static int | |
3287 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3288 | { | |
3289 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3290 | if (peek_stop_reply (thread->ptid)) | |
3291 | set_stop_requested (thread->ptid, 1); | |
3292 | ||
3293 | return 0; | |
3294 | } | |
3295 | ||
9a7071a8 JB |
3296 | /* Send interrupt_sequence to remote target. */ |
3297 | static void | |
eeae04df | 3298 | send_interrupt_sequence (void) |
9a7071a8 | 3299 | { |
5d93a237 TT |
3300 | struct remote_state *rs = get_remote_state (); |
3301 | ||
9a7071a8 | 3302 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3303 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3304 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3305 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3306 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3307 | { | |
5d93a237 | 3308 | serial_send_break (rs->remote_desc); |
c33e31fd | 3309 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3310 | } |
3311 | else | |
3312 | internal_error (__FILE__, __LINE__, | |
3313 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3314 | interrupt_sequence_mode); | |
3315 | } | |
3316 | ||
3405876a PA |
3317 | |
3318 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3319 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3320 | ||
3321 | static ptid_t | |
3322 | stop_reply_extract_thread (char *stop_reply) | |
3323 | { | |
3324 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3325 | { | |
3326 | char *p; | |
3327 | ||
3328 | /* Txx r:val ; r:val (...) */ | |
3329 | p = &stop_reply[3]; | |
3330 | ||
3331 | /* Look for "register" named "thread". */ | |
3332 | while (*p != '\0') | |
3333 | { | |
3334 | char *p1; | |
3335 | ||
3336 | p1 = strchr (p, ':'); | |
3337 | if (p1 == NULL) | |
3338 | return null_ptid; | |
3339 | ||
3340 | if (strncmp (p, "thread", p1 - p) == 0) | |
3341 | return read_ptid (++p1, &p); | |
3342 | ||
3343 | p1 = strchr (p, ';'); | |
3344 | if (p1 == NULL) | |
3345 | return null_ptid; | |
3346 | p1++; | |
3347 | ||
3348 | p = p1; | |
3349 | } | |
3350 | } | |
3351 | ||
3352 | return null_ptid; | |
3353 | } | |
3354 | ||
b7ea362b PA |
3355 | /* Determine the remote side's current thread. If we have a stop |
3356 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3357 | "thread" register we can extract the current thread from. If not, | |
3358 | ask the remote which is the current thread with qC. The former | |
3359 | method avoids a roundtrip. */ | |
3360 | ||
3361 | static ptid_t | |
3362 | get_current_thread (char *wait_status) | |
3363 | { | |
3364 | ptid_t ptid; | |
3365 | ||
3366 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3367 | the target architecture, which we haven't yet fully determined at | |
3368 | this point. */ | |
3369 | if (wait_status != NULL) | |
3370 | ptid = stop_reply_extract_thread (wait_status); | |
3371 | if (ptid_equal (ptid, null_ptid)) | |
3372 | ptid = remote_current_thread (inferior_ptid); | |
3373 | ||
3374 | return ptid; | |
3375 | } | |
3376 | ||
49c62f2e PA |
3377 | /* Query the remote target for which is the current thread/process, |
3378 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3379 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3380 | to return the current thread. |
3381 | ||
3382 | This function is called after handling the '?' or 'vRun' packets, | |
3383 | whose response is a stop reply from which we can also try | |
3384 | extracting the thread. If the target doesn't support the explicit | |
3385 | qC query, we infer the current thread from that stop reply, passed | |
3386 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3387 | |
3388 | static void | |
3405876a | 3389 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3390 | { |
3391 | struct remote_state *rs = get_remote_state (); | |
3392 | int fake_pid_p = 0; | |
3405876a | 3393 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3394 | |
3395 | inferior_ptid = null_ptid; | |
3396 | ||
b7ea362b PA |
3397 | /* Now, if we have thread information, update inferior_ptid. */ |
3398 | ptid = get_current_thread (wait_status); | |
3405876a | 3399 | |
49c62f2e PA |
3400 | if (!ptid_equal (ptid, null_ptid)) |
3401 | { | |
3402 | if (!remote_multi_process_p (rs)) | |
3403 | fake_pid_p = 1; | |
3404 | ||
3405 | inferior_ptid = ptid; | |
3406 | } | |
3407 | else | |
3408 | { | |
3409 | /* Without this, some commands which require an active target | |
3410 | (such as kill) won't work. This variable serves (at least) | |
3411 | double duty as both the pid of the target process (if it has | |
3412 | such), and as a flag indicating that a target is active. */ | |
3413 | inferior_ptid = magic_null_ptid; | |
3414 | fake_pid_p = 1; | |
3415 | } | |
3416 | ||
3417 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3418 | ||
3419 | /* Add the main thread. */ | |
3420 | add_thread_silent (inferior_ptid); | |
3421 | } | |
3422 | ||
9cbc821d | 3423 | static void |
04bd08de | 3424 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3425 | { |
c8d104ad PA |
3426 | struct remote_state *rs = get_remote_state (); |
3427 | struct packet_config *noack_config; | |
2d717e4f | 3428 | char *wait_status = NULL; |
8621d6a9 | 3429 | |
23860348 | 3430 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3431 | QUIT; |
c906108c | 3432 | |
9a7071a8 JB |
3433 | if (interrupt_on_connect) |
3434 | send_interrupt_sequence (); | |
3435 | ||
57e12211 | 3436 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3437 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3438 | |
1e51243a PA |
3439 | /* Signal other parts that we're going through the initial setup, |
3440 | and so things may not be stable yet. */ | |
3441 | rs->starting_up = 1; | |
3442 | ||
c8d104ad PA |
3443 | /* The first packet we send to the target is the optional "supported |
3444 | packets" request. If the target can answer this, it will tell us | |
3445 | which later probes to skip. */ | |
3446 | remote_query_supported (); | |
3447 | ||
d914c394 | 3448 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3449 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3450 | remote_set_permissions (target); |
d914c394 | 3451 | |
c8d104ad PA |
3452 | /* Next, we possibly activate noack mode. |
3453 | ||
3454 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3455 | enable noack mode if the stub reported a wish for it with | |
3456 | qSupported. | |
3457 | ||
3458 | If set to TRUE, then enable noack mode even if the stub didn't | |
3459 | report it in qSupported. If the stub doesn't reply OK, the | |
3460 | session ends with an error. | |
3461 | ||
3462 | If FALSE, then don't activate noack mode, regardless of what the | |
3463 | stub claimed should be the default with qSupported. */ | |
3464 | ||
3465 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3466 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3467 | { |
3468 | putpkt ("QStartNoAckMode"); | |
3469 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3470 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3471 | rs->noack_mode = 1; | |
3472 | } | |
3473 | ||
04bd08de | 3474 | if (extended_p) |
5fe04517 PA |
3475 | { |
3476 | /* Tell the remote that we are using the extended protocol. */ | |
3477 | putpkt ("!"); | |
3478 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3479 | } | |
3480 | ||
9b224c5e PA |
3481 | /* Let the target know which signals it is allowed to pass down to |
3482 | the program. */ | |
3483 | update_signals_program_target (); | |
3484 | ||
d962ef82 DJ |
3485 | /* Next, if the target can specify a description, read it. We do |
3486 | this before anything involving memory or registers. */ | |
3487 | target_find_description (); | |
3488 | ||
6c95b8df PA |
3489 | /* Next, now that we know something about the target, update the |
3490 | address spaces in the program spaces. */ | |
3491 | update_address_spaces (); | |
3492 | ||
50c71eaf PA |
3493 | /* On OSs where the list of libraries is global to all |
3494 | processes, we fetch them early. */ | |
f5656ead | 3495 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3496 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3497 | |
74531fed PA |
3498 | if (non_stop) |
3499 | { | |
4082afcc | 3500 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3501 | error (_("Non-stop mode requested, but remote " |
3502 | "does not support non-stop")); | |
74531fed PA |
3503 | |
3504 | putpkt ("QNonStop:1"); | |
3505 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3506 | ||
3507 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3508 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3509 | |
3510 | /* Find about threads and processes the stub is already | |
3511 | controlling. We default to adding them in the running state. | |
3512 | The '?' query below will then tell us about which threads are | |
3513 | stopped. */ | |
e8032dde | 3514 | remote_update_thread_list (target); |
74531fed | 3515 | } |
4082afcc | 3516 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3517 | { |
3518 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3519 | Request it explicitly. */ |
74531fed PA |
3520 | putpkt ("QNonStop:0"); |
3521 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3522 | ||
3523 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3524 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3525 | } |
3526 | ||
a0743c90 YQ |
3527 | /* Upload TSVs regardless of whether the target is running or not. The |
3528 | remote stub, such as GDBserver, may have some predefined or builtin | |
3529 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3530 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3531 | { |
3532 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3533 | ||
181e3713 | 3534 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3535 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3536 | } | |
3537 | ||
2d717e4f DJ |
3538 | /* Check whether the target is running now. */ |
3539 | putpkt ("?"); | |
3540 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3541 | ||
74531fed | 3542 | if (!non_stop) |
2d717e4f | 3543 | { |
e714e1bf UW |
3544 | ptid_t ptid; |
3545 | int fake_pid_p = 0; | |
3546 | struct inferior *inf; | |
3547 | ||
74531fed | 3548 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3549 | { |
04bd08de | 3550 | if (!extended_p) |
74531fed | 3551 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3552 | |
3553 | /* We're connected, but not running. Drop out before we | |
3554 | call start_remote. */ | |
e278ad5b | 3555 | rs->starting_up = 0; |
c35b1492 | 3556 | return; |
2d717e4f DJ |
3557 | } |
3558 | else | |
74531fed | 3559 | { |
74531fed PA |
3560 | /* Save the reply for later. */ |
3561 | wait_status = alloca (strlen (rs->buf) + 1); | |
3562 | strcpy (wait_status, rs->buf); | |
3563 | } | |
3564 | ||
b7ea362b | 3565 | /* Fetch thread list. */ |
e8032dde | 3566 | target_update_thread_list (); |
b7ea362b | 3567 | |
74531fed PA |
3568 | /* Let the stub know that we want it to return the thread. */ |
3569 | set_continue_thread (minus_one_ptid); | |
3570 | ||
b7ea362b PA |
3571 | if (thread_count () == 0) |
3572 | { | |
3573 | /* Target has no concept of threads at all. GDB treats | |
3574 | non-threaded target as single-threaded; add a main | |
3575 | thread. */ | |
3576 | add_current_inferior_and_thread (wait_status); | |
3577 | } | |
3578 | else | |
3579 | { | |
3580 | /* We have thread information; select the thread the target | |
3581 | says should be current. If we're reconnecting to a | |
3582 | multi-threaded program, this will ideally be the thread | |
3583 | that last reported an event before GDB disconnected. */ | |
3584 | inferior_ptid = get_current_thread (wait_status); | |
3585 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3586 | { | |
3587 | /* Odd... The target was able to list threads, but not | |
3588 | tell us which thread was current (no "thread" | |
3589 | register in T stop reply?). Just pick the first | |
3590 | thread in the thread list then. */ | |
3591 | inferior_ptid = thread_list->ptid; | |
3592 | } | |
3593 | } | |
74531fed | 3594 | |
6e586cc5 YQ |
3595 | /* init_wait_for_inferior should be called before get_offsets in order |
3596 | to manage `inserted' flag in bp loc in a correct state. | |
3597 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3598 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3599 | start_remote, set `inserted' flag to 1. In the initialization of | |
3600 | inferior, breakpoint_init_inferior should be called first, and then | |
3601 | breakpoint_re_set can be called. If this order is broken, state of | |
3602 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3603 | manipulation. */ | |
3604 | init_wait_for_inferior (); | |
3605 | ||
74531fed PA |
3606 | get_offsets (); /* Get text, data & bss offsets. */ |
3607 | ||
d962ef82 DJ |
3608 | /* If we could not find a description using qXfer, and we know |
3609 | how to do it some other way, try again. This is not | |
3610 | supported for non-stop; it could be, but it is tricky if | |
3611 | there are no stopped threads when we connect. */ | |
04bd08de | 3612 | if (remote_read_description_p (target) |
f5656ead | 3613 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3614 | { |
3615 | target_clear_description (); | |
3616 | target_find_description (); | |
3617 | } | |
3618 | ||
74531fed PA |
3619 | /* Use the previously fetched status. */ |
3620 | gdb_assert (wait_status != NULL); | |
3621 | strcpy (rs->buf, wait_status); | |
3622 | rs->cached_wait_status = 1; | |
3623 | ||
3624 | immediate_quit--; | |
04bd08de | 3625 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3626 | } |
3627 | else | |
3628 | { | |
68c97600 PA |
3629 | /* Clear WFI global state. Do this before finding about new |
3630 | threads and inferiors, and setting the current inferior. | |
3631 | Otherwise we would clear the proceed status of the current | |
3632 | inferior when we want its stop_soon state to be preserved | |
3633 | (see notice_new_inferior). */ | |
3634 | init_wait_for_inferior (); | |
3635 | ||
74531fed PA |
3636 | /* In non-stop, we will either get an "OK", meaning that there |
3637 | are no stopped threads at this time; or, a regular stop | |
3638 | reply. In the latter case, there may be more than one thread | |
3639 | stopped --- we pull them all out using the vStopped | |
3640 | mechanism. */ | |
3641 | if (strcmp (rs->buf, "OK") != 0) | |
3642 | { | |
722247f1 | 3643 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3644 | |
722247f1 YQ |
3645 | /* remote_notif_get_pending_replies acks this one, and gets |
3646 | the rest out. */ | |
f48ff2a7 | 3647 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3648 | = remote_notif_parse (notif, rs->buf); |
3649 | remote_notif_get_pending_events (notif); | |
c906108c | 3650 | |
74531fed PA |
3651 | /* Make sure that threads that were stopped remain |
3652 | stopped. */ | |
3653 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3654 | } | |
2d717e4f | 3655 | |
74531fed | 3656 | if (target_can_async_p ()) |
6a3753b3 | 3657 | target_async (1); |
c906108c | 3658 | |
74531fed PA |
3659 | if (thread_count () == 0) |
3660 | { | |
04bd08de | 3661 | if (!extended_p) |
74531fed | 3662 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3663 | |
c35b1492 PA |
3664 | /* We're connected, but not running. Drop out before we |
3665 | call start_remote. */ | |
e278ad5b | 3666 | rs->starting_up = 0; |
c35b1492 PA |
3667 | return; |
3668 | } | |
74531fed PA |
3669 | |
3670 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3671 | |
74531fed PA |
3672 | /* Force the stub to choose a thread. */ |
3673 | set_general_thread (null_ptid); | |
c906108c | 3674 | |
74531fed PA |
3675 | /* Query it. */ |
3676 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3677 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3678 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3679 | |
74531fed PA |
3680 | get_offsets (); /* Get text, data & bss offsets. */ |
3681 | ||
3682 | /* In non-stop mode, any cached wait status will be stored in | |
3683 | the stop reply queue. */ | |
3684 | gdb_assert (wait_status == NULL); | |
f0223081 | 3685 | |
2455069d | 3686 | /* Report all signals during attach/startup. */ |
94bedb42 | 3687 | remote_pass_signals (target, 0, NULL); |
74531fed | 3688 | } |
c8d104ad | 3689 | |
c8d104ad PA |
3690 | /* If we connected to a live target, do some additional setup. */ |
3691 | if (target_has_execution) | |
3692 | { | |
f4ccffad | 3693 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3694 | remote_check_symbols (); |
c8d104ad | 3695 | } |
50c71eaf | 3696 | |
d5551862 SS |
3697 | /* Possibly the target has been engaged in a trace run started |
3698 | previously; find out where things are at. */ | |
8bd200f1 | 3699 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3700 | { |
00bf0b85 | 3701 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3702 | |
00bf0b85 SS |
3703 | if (current_trace_status ()->running) |
3704 | printf_filtered (_("Trace is already running on the target.\n")); | |
3705 | ||
ab6617cc | 3706 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3707 | |
3708 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3709 | } |
3710 | ||
1e51243a PA |
3711 | /* The thread and inferior lists are now synchronized with the |
3712 | target, our symbols have been relocated, and we're merged the | |
3713 | target's tracepoints with ours. We're done with basic start | |
3714 | up. */ | |
3715 | rs->starting_up = 0; | |
3716 | ||
a25a5a45 PA |
3717 | /* Maybe breakpoints are global and need to be inserted now. */ |
3718 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 3719 | insert_breakpoints (); |
c906108c SS |
3720 | } |
3721 | ||
3722 | /* Open a connection to a remote debugger. | |
3723 | NAME is the filename used for communication. */ | |
3724 | ||
3725 | static void | |
014f9477 | 3726 | remote_open (const char *name, int from_tty) |
c906108c | 3727 | { |
75c99385 | 3728 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3729 | } |
3730 | ||
c906108c SS |
3731 | /* Open a connection to a remote debugger using the extended |
3732 | remote gdb protocol. NAME is the filename used for communication. */ | |
3733 | ||
3734 | static void | |
014f9477 | 3735 | extended_remote_open (const char *name, int from_tty) |
c906108c | 3736 | { |
75c99385 | 3737 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3738 | } |
3739 | ||
ca4f7f8b PA |
3740 | /* Reset all packets back to "unknown support". Called when opening a |
3741 | new connection to a remote target. */ | |
c906108c | 3742 | |
d471ea57 | 3743 | static void |
ca4f7f8b | 3744 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3745 | { |
3746 | int i; | |
a744cf53 | 3747 | |
444abaca | 3748 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3749 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3750 | } |
3751 | ||
ca4f7f8b PA |
3752 | /* Initialize all packet configs. */ |
3753 | ||
3754 | static void | |
3755 | init_all_packet_configs (void) | |
3756 | { | |
3757 | int i; | |
3758 | ||
3759 | for (i = 0; i < PACKET_MAX; i++) | |
3760 | { | |
3761 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3762 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3763 | } | |
3764 | } | |
3765 | ||
23860348 | 3766 | /* Symbol look-up. */ |
dc8acb97 MS |
3767 | |
3768 | static void | |
36d25514 | 3769 | remote_check_symbols (void) |
dc8acb97 | 3770 | { |
d01949b6 | 3771 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 3772 | char *msg, *reply, *tmp; |
3b7344d5 | 3773 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
3774 | int end; |
3775 | ||
63154eca PA |
3776 | /* The remote side has no concept of inferiors that aren't running |
3777 | yet, it only knows about running processes. If we're connected | |
3778 | but our current inferior is not running, we should not invite the | |
3779 | remote target to request symbol lookups related to its | |
3780 | (unrelated) current process. */ | |
3781 | if (!target_has_execution) | |
3782 | return; | |
3783 | ||
4082afcc | 3784 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
3785 | return; |
3786 | ||
63154eca PA |
3787 | /* Make sure the remote is pointing at the right process. Note |
3788 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3789 | set_general_process (); |
3790 | ||
6d820c5c DJ |
3791 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3792 | because we need both at the same time. */ | |
ea9c271d | 3793 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3794 | |
23860348 | 3795 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3796 | |
3797 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3798 | getpkt (&rs->buf, &rs->buf_size, 0); |
3799 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3800 | reply = rs->buf; |
dc8acb97 | 3801 | |
61012eef | 3802 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 3803 | { |
77e371c0 TT |
3804 | struct bound_minimal_symbol sym; |
3805 | ||
dc8acb97 | 3806 | tmp = &reply[8]; |
cfd77fa1 | 3807 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3808 | msg[end] = '\0'; |
3809 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 3810 | if (sym.minsym == NULL) |
ea9c271d | 3811 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3812 | else |
2bbe3cc1 | 3813 | { |
f5656ead | 3814 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 3815 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
3816 | |
3817 | /* If this is a function address, return the start of code | |
3818 | instead of any data function descriptor. */ | |
f5656ead | 3819 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3820 | sym_addr, |
3821 | ¤t_target); | |
3822 | ||
3823 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3824 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3825 | } |
3826 | ||
dc8acb97 | 3827 | putpkt (msg); |
6d820c5c | 3828 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3829 | reply = rs->buf; |
dc8acb97 MS |
3830 | } |
3831 | } | |
3832 | ||
9db8d71f | 3833 | static struct serial * |
baa336ce | 3834 | remote_serial_open (const char *name) |
9db8d71f DJ |
3835 | { |
3836 | static int udp_warning = 0; | |
3837 | ||
3838 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3839 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3840 | serial connection is reliable and not the serial connection promising | |
3841 | to be. */ | |
61012eef | 3842 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 3843 | { |
3e43a32a MS |
3844 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3845 | "Some events may be lost, rendering further debugging " | |
3846 | "impossible.")); | |
9db8d71f DJ |
3847 | udp_warning = 1; |
3848 | } | |
3849 | ||
3850 | return serial_open (name); | |
3851 | } | |
3852 | ||
d914c394 SS |
3853 | /* Inform the target of our permission settings. The permission flags |
3854 | work without this, but if the target knows the settings, it can do | |
3855 | a couple things. First, it can add its own check, to catch cases | |
3856 | that somehow manage to get by the permissions checks in target | |
3857 | methods. Second, if the target is wired to disallow particular | |
3858 | settings (for instance, a system in the field that is not set up to | |
3859 | be able to stop at a breakpoint), it can object to any unavailable | |
3860 | permissions. */ | |
3861 | ||
3862 | void | |
c378d69d | 3863 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
3864 | { |
3865 | struct remote_state *rs = get_remote_state (); | |
3866 | ||
bba74b36 YQ |
3867 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3868 | "WriteReg:%x;WriteMem:%x;" | |
3869 | "InsertBreak:%x;InsertTrace:%x;" | |
3870 | "InsertFastTrace:%x;Stop:%x", | |
3871 | may_write_registers, may_write_memory, | |
3872 | may_insert_breakpoints, may_insert_tracepoints, | |
3873 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3874 | putpkt (rs->buf); |
3875 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3876 | ||
3877 | /* If the target didn't like the packet, warn the user. Do not try | |
3878 | to undo the user's settings, that would just be maddening. */ | |
3879 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3880 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3881 | } |
3882 | ||
be2a5f71 DJ |
3883 | /* This type describes each known response to the qSupported |
3884 | packet. */ | |
3885 | struct protocol_feature | |
3886 | { | |
3887 | /* The name of this protocol feature. */ | |
3888 | const char *name; | |
3889 | ||
3890 | /* The default for this protocol feature. */ | |
3891 | enum packet_support default_support; | |
3892 | ||
3893 | /* The function to call when this feature is reported, or after | |
3894 | qSupported processing if the feature is not supported. | |
3895 | The first argument points to this structure. The second | |
3896 | argument indicates whether the packet requested support be | |
3897 | enabled, disabled, or probed (or the default, if this function | |
3898 | is being called at the end of processing and this feature was | |
3899 | not reported). The third argument may be NULL; if not NULL, it | |
3900 | is a NUL-terminated string taken from the packet following | |
3901 | this feature's name and an equals sign. */ | |
3902 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3903 | const char *); | |
3904 | ||
3905 | /* The corresponding packet for this feature. Only used if | |
3906 | FUNC is remote_supported_packet. */ | |
3907 | int packet; | |
3908 | }; | |
3909 | ||
be2a5f71 DJ |
3910 | static void |
3911 | remote_supported_packet (const struct protocol_feature *feature, | |
3912 | enum packet_support support, | |
3913 | const char *argument) | |
3914 | { | |
3915 | if (argument) | |
3916 | { | |
3917 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3918 | " \"%s\"."), feature->name); | |
3919 | return; | |
3920 | } | |
3921 | ||
4082afcc | 3922 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 3923 | } |
be2a5f71 DJ |
3924 | |
3925 | static void | |
3926 | remote_packet_size (const struct protocol_feature *feature, | |
3927 | enum packet_support support, const char *value) | |
3928 | { | |
3929 | struct remote_state *rs = get_remote_state (); | |
3930 | ||
3931 | int packet_size; | |
3932 | char *value_end; | |
3933 | ||
3934 | if (support != PACKET_ENABLE) | |
3935 | return; | |
3936 | ||
3937 | if (value == NULL || *value == '\0') | |
3938 | { | |
3939 | warning (_("Remote target reported \"%s\" without a size."), | |
3940 | feature->name); | |
3941 | return; | |
3942 | } | |
3943 | ||
3944 | errno = 0; | |
3945 | packet_size = strtol (value, &value_end, 16); | |
3946 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3947 | { | |
3948 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3949 | feature->name, value); | |
3950 | return; | |
3951 | } | |
3952 | ||
3953 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3954 | { | |
3955 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3956 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3957 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3958 | } | |
3959 | ||
3960 | /* Record the new maximum packet size. */ | |
3961 | rs->explicit_packet_size = packet_size; | |
3962 | } | |
3963 | ||
dc473cfb | 3964 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3965 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3966 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3967 | PACKET_qXfer_auxv }, |
23181151 DJ |
3968 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3969 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3970 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3971 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3972 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3973 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 3974 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 3975 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 3976 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3977 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3978 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3979 | PACKET_qXfer_spu_read }, | |
3980 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3981 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3982 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3983 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3984 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3985 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3986 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3987 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3988 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3989 | PACKET_QPassSignals }, | |
9b224c5e PA |
3990 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
3991 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
3992 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3993 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
3994 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
3995 | PACKET_multiprocess_feature }, | |
3996 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
3997 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3998 | PACKET_qXfer_siginfo_read }, | |
3999 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4000 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4001 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4002 | PACKET_ConditionalTracepoints }, |
4082afcc | 4003 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4004 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4005 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4006 | PACKET_BreakpointCommands }, |
4082afcc | 4007 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4008 | PACKET_FastTracepoints }, |
4082afcc | 4009 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4010 | PACKET_StaticTracepoints }, |
4082afcc | 4011 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4012 | PACKET_InstallInTrace}, |
4082afcc PA |
4013 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4014 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4015 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4016 | PACKET_bc }, | |
4017 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4018 | PACKET_bs }, | |
409873ef SS |
4019 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4020 | PACKET_TracepointSource }, | |
d914c394 SS |
4021 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4022 | PACKET_QAllow }, | |
4082afcc PA |
4023 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4024 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4025 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4026 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4027 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4028 | PACKET_qXfer_uib }, | |
03583c20 UW |
4029 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4030 | PACKET_QDisableRandomization }, | |
d1feda86 | 4031 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4032 | { "QTBuffer:size", PACKET_DISABLE, |
4033 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4034 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4035 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4036 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
4037 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, | |
f4abbc16 MM |
4038 | PACKET_qXfer_btrace }, |
4039 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4040 | PACKET_qXfer_btrace_conf }, |
4041 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4042 | PACKET_Qbtrace_conf_bts_size }, |
4043 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4044 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
be2a5f71 DJ |
4045 | }; |
4046 | ||
c8d5aac9 L |
4047 | static char *remote_support_xml; |
4048 | ||
4049 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4050 | ||
4051 | void | |
6e39997a | 4052 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4053 | { |
4054 | #if defined(HAVE_LIBEXPAT) | |
4055 | if (remote_support_xml == NULL) | |
c4f7c687 | 4056 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4057 | else |
4058 | { | |
4059 | char *copy = xstrdup (remote_support_xml + 13); | |
4060 | char *p = strtok (copy, ","); | |
4061 | ||
4062 | do | |
4063 | { | |
4064 | if (strcmp (p, xml) == 0) | |
4065 | { | |
4066 | /* already there */ | |
4067 | xfree (copy); | |
4068 | return; | |
4069 | } | |
4070 | } | |
4071 | while ((p = strtok (NULL, ",")) != NULL); | |
4072 | xfree (copy); | |
4073 | ||
94b0dee1 PA |
4074 | remote_support_xml = reconcat (remote_support_xml, |
4075 | remote_support_xml, ",", xml, | |
4076 | (char *) NULL); | |
c8d5aac9 L |
4077 | } |
4078 | #endif | |
4079 | } | |
4080 | ||
4081 | static char * | |
4082 | remote_query_supported_append (char *msg, const char *append) | |
4083 | { | |
4084 | if (msg) | |
94b0dee1 | 4085 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4086 | else |
4087 | return xstrdup (append); | |
4088 | } | |
4089 | ||
be2a5f71 DJ |
4090 | static void |
4091 | remote_query_supported (void) | |
4092 | { | |
4093 | struct remote_state *rs = get_remote_state (); | |
4094 | char *next; | |
4095 | int i; | |
4096 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4097 | ||
4098 | /* The packet support flags are handled differently for this packet | |
4099 | than for most others. We treat an error, a disabled packet, and | |
4100 | an empty response identically: any features which must be reported | |
4101 | to be used will be automatically disabled. An empty buffer | |
4102 | accomplishes this, since that is also the representation for a list | |
4103 | containing no features. */ | |
4104 | ||
4105 | rs->buf[0] = 0; | |
4082afcc | 4106 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4107 | { |
c8d5aac9 | 4108 | char *q = NULL; |
94b0dee1 | 4109 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4110 | |
901f9912 | 4111 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 | 4112 | |
f7e6eed5 PA |
4113 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4114 | q = remote_query_supported_append (q, "swbreak+"); | |
4115 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4116 | q = remote_query_supported_append (q, "hwbreak+"); | |
4117 | ||
c8d5aac9 L |
4118 | if (remote_support_xml) |
4119 | q = remote_query_supported_append (q, remote_support_xml); | |
4120 | ||
dde08ee1 PA |
4121 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4122 | ||
4123 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4124 | putpkt (q); | |
82f73884 | 4125 | |
94b0dee1 PA |
4126 | do_cleanups (old_chain); |
4127 | ||
be2a5f71 DJ |
4128 | getpkt (&rs->buf, &rs->buf_size, 0); |
4129 | ||
4130 | /* If an error occured, warn, but do not return - just reset the | |
4131 | buffer to empty and go on to disable features. */ | |
4132 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4133 | == PACKET_ERROR) | |
4134 | { | |
4135 | warning (_("Remote failure reply: %s"), rs->buf); | |
4136 | rs->buf[0] = 0; | |
4137 | } | |
4138 | } | |
4139 | ||
4140 | memset (seen, 0, sizeof (seen)); | |
4141 | ||
4142 | next = rs->buf; | |
4143 | while (*next) | |
4144 | { | |
4145 | enum packet_support is_supported; | |
4146 | char *p, *end, *name_end, *value; | |
4147 | ||
4148 | /* First separate out this item from the rest of the packet. If | |
4149 | there's another item after this, we overwrite the separator | |
4150 | (terminated strings are much easier to work with). */ | |
4151 | p = next; | |
4152 | end = strchr (p, ';'); | |
4153 | if (end == NULL) | |
4154 | { | |
4155 | end = p + strlen (p); | |
4156 | next = end; | |
4157 | } | |
4158 | else | |
4159 | { | |
89be2091 DJ |
4160 | *end = '\0'; |
4161 | next = end + 1; | |
4162 | ||
be2a5f71 DJ |
4163 | if (end == p) |
4164 | { | |
4165 | warning (_("empty item in \"qSupported\" response")); | |
4166 | continue; | |
4167 | } | |
be2a5f71 DJ |
4168 | } |
4169 | ||
4170 | name_end = strchr (p, '='); | |
4171 | if (name_end) | |
4172 | { | |
4173 | /* This is a name=value entry. */ | |
4174 | is_supported = PACKET_ENABLE; | |
4175 | value = name_end + 1; | |
4176 | *name_end = '\0'; | |
4177 | } | |
4178 | else | |
4179 | { | |
4180 | value = NULL; | |
4181 | switch (end[-1]) | |
4182 | { | |
4183 | case '+': | |
4184 | is_supported = PACKET_ENABLE; | |
4185 | break; | |
4186 | ||
4187 | case '-': | |
4188 | is_supported = PACKET_DISABLE; | |
4189 | break; | |
4190 | ||
4191 | case '?': | |
4192 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4193 | break; | |
4194 | ||
4195 | default: | |
3e43a32a MS |
4196 | warning (_("unrecognized item \"%s\" " |
4197 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4198 | continue; |
4199 | } | |
4200 | end[-1] = '\0'; | |
4201 | } | |
4202 | ||
4203 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4204 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4205 | { | |
4206 | const struct protocol_feature *feature; | |
4207 | ||
4208 | seen[i] = 1; | |
4209 | feature = &remote_protocol_features[i]; | |
4210 | feature->func (feature, is_supported, value); | |
4211 | break; | |
4212 | } | |
4213 | } | |
4214 | ||
4215 | /* If we increased the packet size, make sure to increase the global | |
4216 | buffer size also. We delay this until after parsing the entire | |
4217 | qSupported packet, because this is the same buffer we were | |
4218 | parsing. */ | |
4219 | if (rs->buf_size < rs->explicit_packet_size) | |
4220 | { | |
4221 | rs->buf_size = rs->explicit_packet_size; | |
4222 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4223 | } | |
4224 | ||
4225 | /* Handle the defaults for unmentioned features. */ | |
4226 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4227 | if (!seen[i]) | |
4228 | { | |
4229 | const struct protocol_feature *feature; | |
4230 | ||
4231 | feature = &remote_protocol_features[i]; | |
4232 | feature->func (feature, feature->default_support, NULL); | |
4233 | } | |
4234 | } | |
4235 | ||
78a095c3 JK |
4236 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4237 | on it so remove them first. */ | |
4238 | ||
4239 | static void | |
4240 | remote_unpush_target (void) | |
4241 | { | |
4242 | pop_all_targets_above (process_stratum - 1); | |
4243 | } | |
be2a5f71 | 4244 | |
c906108c | 4245 | static void |
014f9477 | 4246 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4247 | struct target_ops *target, int extended_p) |
c906108c | 4248 | { |
d01949b6 | 4249 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4250 | |
c906108c | 4251 | if (name == 0) |
8a3fe4f8 | 4252 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4253 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4254 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4255 | |
23860348 | 4256 | /* See FIXME above. */ |
c6ebd6cf | 4257 | if (!target_async_permitted) |
92d1e331 | 4258 | wait_forever_enabled_p = 1; |
6426a772 | 4259 | |
2d717e4f | 4260 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4261 | Ask this question first, before target_preopen has a chance to kill |
4262 | anything. */ | |
5d93a237 | 4263 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4264 | { |
78a095c3 JK |
4265 | if (from_tty |
4266 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4267 | error (_("Still connected.")); |
4268 | } | |
4269 | ||
78a095c3 | 4270 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4271 | target_preopen (from_tty); |
4272 | ||
89be2091 | 4273 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4274 | xfree (rs->last_pass_packet); |
4275 | rs->last_pass_packet = NULL; | |
89be2091 | 4276 | |
9b224c5e PA |
4277 | /* Make sure we send the program signals list the next time we |
4278 | resume. */ | |
5e4a05c4 TT |
4279 | xfree (rs->last_program_signals_packet); |
4280 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4281 | |
ad9a8f3f | 4282 | remote_fileio_reset (); |
1dd41f16 NS |
4283 | reopen_exec_file (); |
4284 | reread_symbols (); | |
4285 | ||
5d93a237 TT |
4286 | rs->remote_desc = remote_serial_open (name); |
4287 | if (!rs->remote_desc) | |
c906108c SS |
4288 | perror_with_name (name); |
4289 | ||
4290 | if (baud_rate != -1) | |
4291 | { | |
5d93a237 | 4292 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4293 | { |
9b74d5d3 KB |
4294 | /* The requested speed could not be set. Error out to |
4295 | top level after closing remote_desc. Take care to | |
4296 | set remote_desc to NULL to avoid closing remote_desc | |
4297 | more than once. */ | |
5d93a237 TT |
4298 | serial_close (rs->remote_desc); |
4299 | rs->remote_desc = NULL; | |
c906108c SS |
4300 | perror_with_name (name); |
4301 | } | |
4302 | } | |
4303 | ||
236af5e3 | 4304 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4305 | serial_raw (rs->remote_desc); |
c906108c SS |
4306 | |
4307 | /* If there is something sitting in the buffer we might take it as a | |
4308 | response to a command, which would be bad. */ | |
5d93a237 | 4309 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4310 | |
4311 | if (from_tty) | |
4312 | { | |
4313 | puts_filtered ("Remote debugging using "); | |
4314 | puts_filtered (name); | |
4315 | puts_filtered ("\n"); | |
4316 | } | |
23860348 | 4317 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4318 | |
74531fed PA |
4319 | /* Register extra event sources in the event loop. */ |
4320 | remote_async_inferior_event_token | |
4321 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4322 | NULL); | |
5965e028 | 4323 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4324 | |
be2a5f71 DJ |
4325 | /* Reset the target state; these things will be queried either by |
4326 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4327 | reset_all_packet_configs_support (); |
74531fed | 4328 | rs->cached_wait_status = 0; |
be2a5f71 | 4329 | rs->explicit_packet_size = 0; |
a6f3e723 | 4330 | rs->noack_mode = 0; |
82f73884 | 4331 | rs->extended = extended_p; |
e24a49d8 | 4332 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4333 | rs->ctrlc_pending_p = 0; |
802188a7 | 4334 | |
47f8a51d TT |
4335 | rs->general_thread = not_sent_ptid; |
4336 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4337 | rs->remote_traceframe_number = -1; |
c906108c | 4338 | |
9d1f7ab2 | 4339 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4340 | rs->use_threadinfo_query = 1; |
4341 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4342 | |
c6ebd6cf | 4343 | if (target_async_permitted) |
92d1e331 | 4344 | { |
23860348 | 4345 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4346 | remote_async_terminal_ours_p = 1; |
4347 | ||
4348 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4349 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4350 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4351 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4352 | around this. Eventually a mechanism that allows |
92d1e331 | 4353 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4354 | implemented. */ |
92d1e331 DJ |
4355 | wait_forever_enabled_p = 0; |
4356 | } | |
4357 | ||
23860348 | 4358 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4359 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4360 | |
74531fed PA |
4361 | /* Start afresh. */ |
4362 | init_thread_list (); | |
4363 | ||
36918e70 | 4364 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4365 | target (we'd otherwise be in an inconsistent state) and then |
4366 | propogate the error on up the exception chain. This ensures that | |
4367 | the caller doesn't stumble along blindly assuming that the | |
4368 | function succeeded. The CLI doesn't have this problem but other | |
4369 | UI's, such as MI do. | |
36918e70 AC |
4370 | |
4371 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4372 | this function should return an error indication letting the | |
ce2826aa | 4373 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4374 | ``target remote'' is directly wired to this function making that |
4375 | impossible. On a positive note, the CLI side of this problem has | |
4376 | been fixed - the function set_cmd_context() makes it possible for | |
4377 | all the ``target ....'' commands to share a common callback | |
4378 | function. See cli-dump.c. */ | |
109c3e39 | 4379 | { |
2d717e4f | 4380 | |
492d29ea | 4381 | TRY |
04bd08de TT |
4382 | { |
4383 | remote_start_remote (from_tty, target, extended_p); | |
4384 | } | |
492d29ea | 4385 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4386 | { |
c8d104ad PA |
4387 | /* Pop the partially set up target - unless something else did |
4388 | already before throwing the exception. */ | |
5d93a237 | 4389 | if (rs->remote_desc != NULL) |
78a095c3 | 4390 | remote_unpush_target (); |
c6ebd6cf | 4391 | if (target_async_permitted) |
109c3e39 AC |
4392 | wait_forever_enabled_p = 1; |
4393 | throw_exception (ex); | |
4394 | } | |
492d29ea | 4395 | END_CATCH |
109c3e39 | 4396 | } |
c906108c | 4397 | |
f4abbc16 MM |
4398 | remote_btrace_reset (); |
4399 | ||
c6ebd6cf | 4400 | if (target_async_permitted) |
92d1e331 | 4401 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4402 | } |
4403 | ||
c906108c SS |
4404 | /* This takes a program previously attached to and detaches it. After |
4405 | this is done, GDB can be used to debug some other program. We | |
4406 | better not have left any breakpoints in the target program or it'll | |
4407 | die when it hits one. */ | |
4408 | ||
4409 | static void | |
52554a0e | 4410 | remote_detach_1 (const char *args, int from_tty, int extended) |
c906108c | 4411 | { |
82f73884 | 4412 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4413 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4414 | |
4415 | if (args) | |
8a3fe4f8 | 4416 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4417 | |
2d717e4f DJ |
4418 | if (!target_has_execution) |
4419 | error (_("No process to detach from.")); | |
4420 | ||
7cee1e54 PA |
4421 | if (from_tty) |
4422 | { | |
4423 | char *exec_file = get_exec_file (0); | |
4424 | if (exec_file == NULL) | |
4425 | exec_file = ""; | |
4426 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4427 | target_pid_to_str (pid_to_ptid (pid))); | |
4428 | gdb_flush (gdb_stdout); | |
4429 | } | |
4430 | ||
c906108c | 4431 | /* Tell the remote target to detach. */ |
82f73884 | 4432 | if (remote_multi_process_p (rs)) |
bba74b36 | 4433 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4434 | else |
4435 | strcpy (rs->buf, "D"); | |
4436 | ||
4ddda9b5 PA |
4437 | putpkt (rs->buf); |
4438 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4439 | ||
82f73884 PA |
4440 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4441 | ; | |
4442 | else if (rs->buf[0] == '\0') | |
4443 | error (_("Remote doesn't know how to detach")); | |
4444 | else | |
4ddda9b5 | 4445 | error (_("Can't detach process.")); |
c906108c | 4446 | |
7cee1e54 PA |
4447 | if (from_tty && !extended) |
4448 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4449 | |
82f73884 | 4450 | target_mourn_inferior (); |
2d717e4f DJ |
4451 | } |
4452 | ||
4453 | static void | |
52554a0e | 4454 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4455 | { |
4456 | remote_detach_1 (args, from_tty, 0); | |
4457 | } | |
4458 | ||
4459 | static void | |
52554a0e | 4460 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f DJ |
4461 | { |
4462 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4463 | } |
4464 | ||
6ad8ae5c DJ |
4465 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4466 | ||
43ff13b4 | 4467 | static void |
fee354ee | 4468 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4469 | { |
43ff13b4 | 4470 | if (args) |
2d717e4f | 4471 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4472 | |
2d717e4f DJ |
4473 | /* Make sure we unpush even the extended remote targets; mourn |
4474 | won't do it. So call remote_mourn_1 directly instead of | |
4475 | target_mourn_inferior. */ | |
4476 | remote_mourn_1 (target); | |
4477 | ||
43ff13b4 JM |
4478 | if (from_tty) |
4479 | puts_filtered ("Ending remote debugging.\n"); | |
4480 | } | |
4481 | ||
2d717e4f DJ |
4482 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4483 | be chatty about it. */ | |
4484 | ||
4485 | static void | |
c0939df1 TT |
4486 | extended_remote_attach_1 (struct target_ops *target, const char *args, |
4487 | int from_tty) | |
2d717e4f DJ |
4488 | { |
4489 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4490 | int pid; |
96ef3384 | 4491 | char *wait_status = NULL; |
2d717e4f | 4492 | |
74164c56 | 4493 | pid = parse_pid_to_attach (args); |
2d717e4f | 4494 | |
74164c56 JK |
4495 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4496 | way as in other targets. */ | |
2d717e4f | 4497 | |
4082afcc | 4498 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4499 | error (_("This target does not support attaching to a process")); |
4500 | ||
7cee1e54 PA |
4501 | if (from_tty) |
4502 | { | |
4503 | char *exec_file = get_exec_file (0); | |
4504 | ||
4505 | if (exec_file) | |
4506 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4507 | target_pid_to_str (pid_to_ptid (pid))); | |
4508 | else | |
4509 | printf_unfiltered (_("Attaching to %s\n"), | |
4510 | target_pid_to_str (pid_to_ptid (pid))); | |
4511 | ||
4512 | gdb_flush (gdb_stdout); | |
4513 | } | |
4514 | ||
bba74b36 | 4515 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4516 | putpkt (rs->buf); |
4517 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4518 | ||
4082afcc PA |
4519 | switch (packet_ok (rs->buf, |
4520 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4521 | { |
4082afcc | 4522 | case PACKET_OK: |
74531fed PA |
4523 | if (!non_stop) |
4524 | { | |
4525 | /* Save the reply for later. */ | |
4526 | wait_status = alloca (strlen (rs->buf) + 1); | |
4527 | strcpy (wait_status, rs->buf); | |
4528 | } | |
4529 | else if (strcmp (rs->buf, "OK") != 0) | |
4530 | error (_("Attaching to %s failed with: %s"), | |
4531 | target_pid_to_str (pid_to_ptid (pid)), | |
4532 | rs->buf); | |
4082afcc PA |
4533 | break; |
4534 | case PACKET_UNKNOWN: | |
4535 | error (_("This target does not support attaching to a process")); | |
4536 | default: | |
4537 | error (_("Attaching to %s failed"), | |
4538 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4539 | } |
2d717e4f | 4540 | |
49c62f2e | 4541 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4542 | |
2d717e4f | 4543 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4544 | |
bad34192 PA |
4545 | if (non_stop) |
4546 | { | |
4547 | struct thread_info *thread; | |
79d7f229 | 4548 | |
bad34192 | 4549 | /* Get list of threads. */ |
e8032dde | 4550 | remote_update_thread_list (target); |
82f73884 | 4551 | |
bad34192 PA |
4552 | thread = first_thread_of_process (pid); |
4553 | if (thread) | |
4554 | inferior_ptid = thread->ptid; | |
4555 | else | |
4556 | inferior_ptid = pid_to_ptid (pid); | |
4557 | ||
4558 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4559 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4560 | } |
74531fed | 4561 | else |
bad34192 PA |
4562 | { |
4563 | /* Now, if we have thread information, update inferior_ptid. */ | |
4564 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4565 | ||
4566 | /* Add the main thread to the thread list. */ | |
4567 | add_thread_silent (inferior_ptid); | |
4568 | } | |
c0a2216e | 4569 | |
96ef3384 UW |
4570 | /* Next, if the target can specify a description, read it. We do |
4571 | this before anything involving memory or registers. */ | |
4572 | target_find_description (); | |
4573 | ||
74531fed PA |
4574 | if (!non_stop) |
4575 | { | |
4576 | /* Use the previously fetched status. */ | |
4577 | gdb_assert (wait_status != NULL); | |
4578 | ||
4579 | if (target_can_async_p ()) | |
4580 | { | |
722247f1 YQ |
4581 | struct notif_event *reply |
4582 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4583 | |
722247f1 | 4584 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4585 | |
6a3753b3 | 4586 | target_async (1); |
74531fed PA |
4587 | } |
4588 | else | |
4589 | { | |
4590 | gdb_assert (wait_status != NULL); | |
4591 | strcpy (rs->buf, wait_status); | |
4592 | rs->cached_wait_status = 1; | |
4593 | } | |
4594 | } | |
4595 | else | |
4596 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4597 | } |
4598 | ||
4599 | static void | |
c0939df1 | 4600 | extended_remote_attach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4601 | { |
136d6dae | 4602 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4603 | } |
4604 | ||
b9c1d481 AS |
4605 | /* Implementation of the to_post_attach method. */ |
4606 | ||
4607 | static void | |
4608 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
4609 | { | |
4610 | /* In certain cases GDB might not have had the chance to start | |
4611 | symbol lookup up until now. This could happen if the debugged | |
4612 | binary is not using shared libraries, the vsyscall page is not | |
4613 | present (on Linux) and the binary itself hadn't changed since the | |
4614 | debugging process was started. */ | |
4615 | if (symfile_objfile != NULL) | |
4616 | remote_check_symbols(); | |
4617 | } | |
4618 | ||
c906108c | 4619 | \f |
506fb367 DJ |
4620 | /* Check for the availability of vCont. This function should also check |
4621 | the response. */ | |
c906108c SS |
4622 | |
4623 | static void | |
6d820c5c | 4624 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4625 | { |
2e9f7625 | 4626 | char *buf; |
6d820c5c | 4627 | |
2e9f7625 DJ |
4628 | strcpy (rs->buf, "vCont?"); |
4629 | putpkt (rs->buf); | |
6d820c5c | 4630 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4631 | buf = rs->buf; |
c906108c | 4632 | |
506fb367 | 4633 | /* Make sure that the features we assume are supported. */ |
61012eef | 4634 | if (startswith (buf, "vCont")) |
506fb367 DJ |
4635 | { |
4636 | char *p = &buf[5]; | |
4637 | int support_s, support_S, support_c, support_C; | |
4638 | ||
4639 | support_s = 0; | |
4640 | support_S = 0; | |
4641 | support_c = 0; | |
4642 | support_C = 0; | |
d458bd84 | 4643 | rs->supports_vCont.t = 0; |
c1e36e3e | 4644 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4645 | while (p && *p == ';') |
4646 | { | |
4647 | p++; | |
4648 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4649 | support_s = 1; | |
4650 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4651 | support_S = 1; | |
4652 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4653 | support_c = 1; | |
4654 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4655 | support_C = 1; | |
74531fed | 4656 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4657 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4658 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4659 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4660 | |
4661 | p = strchr (p, ';'); | |
4662 | } | |
c906108c | 4663 | |
506fb367 DJ |
4664 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4665 | BUF will make packet_ok disable the packet. */ | |
4666 | if (!support_s || !support_S || !support_c || !support_C) | |
4667 | buf[0] = 0; | |
4668 | } | |
c906108c | 4669 | |
444abaca | 4670 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4671 | } |
c906108c | 4672 | |
0d8f58ca PA |
4673 | /* Helper function for building "vCont" resumptions. Write a |
4674 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4675 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4676 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4677 | resumed thread should be single-stepped and/or signalled. If PTID | |
4678 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4679 | represents a process, then all threads of the process are resumed; | |
4680 | the thread to be stepped and/or signalled is given in the global | |
4681 | INFERIOR_PTID. */ | |
4682 | ||
4683 | static char * | |
4684 | append_resumption (char *p, char *endp, | |
2ea28649 | 4685 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4686 | { |
4687 | struct remote_state *rs = get_remote_state (); | |
4688 | ||
a493e3e2 | 4689 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4690 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4691 | else if (step |
4692 | /* GDB is willing to range step. */ | |
4693 | && use_range_stepping | |
4694 | /* Target supports range stepping. */ | |
4695 | && rs->supports_vCont.r | |
4696 | /* We don't currently support range stepping multiple | |
4697 | threads with a wildcard (though the protocol allows it, | |
4698 | so stubs shouldn't make an active effort to forbid | |
4699 | it). */ | |
4700 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4701 | { | |
4702 | struct thread_info *tp; | |
4703 | ||
4704 | if (ptid_equal (ptid, minus_one_ptid)) | |
4705 | { | |
4706 | /* If we don't know about the target thread's tid, then | |
4707 | we're resuming magic_null_ptid (see caller). */ | |
4708 | tp = find_thread_ptid (magic_null_ptid); | |
4709 | } | |
4710 | else | |
4711 | tp = find_thread_ptid (ptid); | |
4712 | gdb_assert (tp != NULL); | |
4713 | ||
4714 | if (tp->control.may_range_step) | |
4715 | { | |
4716 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4717 | ||
4718 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4719 | phex_nz (tp->control.step_range_start, | |
4720 | addr_size), | |
4721 | phex_nz (tp->control.step_range_end, | |
4722 | addr_size)); | |
4723 | } | |
4724 | else | |
4725 | p += xsnprintf (p, endp - p, ";s"); | |
4726 | } | |
0d8f58ca PA |
4727 | else if (step) |
4728 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4729 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4730 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4731 | else | |
4732 | p += xsnprintf (p, endp - p, ";c"); | |
4733 | ||
4734 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4735 | { | |
4736 | ptid_t nptid; | |
4737 | ||
4738 | /* All (-1) threads of process. */ | |
ba348170 | 4739 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
4740 | |
4741 | p += xsnprintf (p, endp - p, ":"); | |
4742 | p = write_ptid (p, endp, nptid); | |
4743 | } | |
4744 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4745 | { | |
4746 | p += xsnprintf (p, endp - p, ":"); | |
4747 | p = write_ptid (p, endp, ptid); | |
4748 | } | |
4749 | ||
4750 | return p; | |
4751 | } | |
4752 | ||
e5ef252a PA |
4753 | /* Append a vCont continue-with-signal action for threads that have a |
4754 | non-zero stop signal. */ | |
4755 | ||
4756 | static char * | |
4757 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4758 | { | |
4759 | struct thread_info *thread; | |
4760 | ||
034f788c | 4761 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
4762 | if (ptid_match (thread->ptid, ptid) |
4763 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 4764 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
4765 | { |
4766 | p = append_resumption (p, endp, thread->ptid, | |
4767 | 0, thread->suspend.stop_signal); | |
4768 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4769 | } | |
4770 | ||
4771 | return p; | |
4772 | } | |
4773 | ||
506fb367 DJ |
4774 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4775 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4776 | resumed thread should be single-stepped and/or signalled. If PTID |
4777 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4778 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4779 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4780 | |
506fb367 DJ |
4781 | This function issues a strict subset of all possible vCont commands at the |
4782 | moment. */ | |
44eaed12 | 4783 | |
506fb367 | 4784 | static int |
2ea28649 | 4785 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4786 | { |
4787 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4788 | char *p; |
4789 | char *endp; | |
44eaed12 | 4790 | |
4082afcc | 4791 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4792 | remote_vcont_probe (rs); |
44eaed12 | 4793 | |
4082afcc | 4794 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 4795 | return 0; |
44eaed12 | 4796 | |
82f73884 PA |
4797 | p = rs->buf; |
4798 | endp = rs->buf + get_remote_packet_size (); | |
4799 | ||
506fb367 DJ |
4800 | /* If we could generate a wider range of packets, we'd have to worry |
4801 | about overflowing BUF. Should there be a generic | |
4802 | "multi-part-packet" packet? */ | |
4803 | ||
0d8f58ca PA |
4804 | p += xsnprintf (p, endp - p, "vCont"); |
4805 | ||
79d7f229 | 4806 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4807 | { |
79d7f229 PA |
4808 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4809 | so we don't have any TID numbers the inferior will | |
4810 | understand. Make sure to only send forms that do not specify | |
4811 | a TID. */ | |
a9cbf802 | 4812 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4813 | } |
0d8f58ca | 4814 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4815 | { |
0d8f58ca PA |
4816 | /* Resume all threads (of all processes, or of a single |
4817 | process), with preference for INFERIOR_PTID. This assumes | |
4818 | inferior_ptid belongs to the set of all threads we are about | |
4819 | to resume. */ | |
a493e3e2 | 4820 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4821 | { |
0d8f58ca PA |
4822 | /* Step inferior_ptid, with or without signal. */ |
4823 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4824 | } |
0d8f58ca | 4825 | |
e5ef252a PA |
4826 | /* Also pass down any pending signaled resumption for other |
4827 | threads not the current. */ | |
4828 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4829 | ||
0d8f58ca | 4830 | /* And continue others without a signal. */ |
a493e3e2 | 4831 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4832 | } |
4833 | else | |
506fb367 DJ |
4834 | { |
4835 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4836 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4837 | } |
c906108c | 4838 | |
82f73884 PA |
4839 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4840 | putpkt (rs->buf); | |
506fb367 | 4841 | |
74531fed PA |
4842 | if (non_stop) |
4843 | { | |
4844 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4845 | reply will be reported asynchronously by means of a `%Stop' | |
4846 | notification. */ | |
4847 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4848 | if (strcmp (rs->buf, "OK") != 0) | |
4849 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4850 | } | |
4851 | ||
506fb367 | 4852 | return 1; |
c906108c | 4853 | } |
43ff13b4 | 4854 | |
506fb367 DJ |
4855 | /* Tell the remote machine to resume. */ |
4856 | ||
43ff13b4 | 4857 | static void |
28439f5e | 4858 | remote_resume (struct target_ops *ops, |
2ea28649 | 4859 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4860 | { |
d01949b6 | 4861 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4862 | char *buf; |
43ff13b4 | 4863 | |
722247f1 YQ |
4864 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4865 | (explained in remote-notif.c:handle_notification) so | |
4866 | remote_notif_process is not called. We need find a place where | |
4867 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4868 | before resuming inferior, because inferior was stopped and no RSP | |
4869 | traffic at that moment. */ | |
4870 | if (!non_stop) | |
5965e028 | 4871 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 4872 | |
b73be471 | 4873 | rs->last_sent_signal = siggnal; |
280ceea3 | 4874 | rs->last_sent_step = step; |
43ff13b4 | 4875 | |
506fb367 | 4876 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4877 | /* No reverse support (yet) for vCont. */ |
4878 | if (execution_direction != EXEC_REVERSE) | |
4879 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4880 | goto done; | |
506fb367 | 4881 | |
79d7f229 PA |
4882 | /* All other supported resume packets do use Hc, so set the continue |
4883 | thread. */ | |
4884 | if (ptid_equal (ptid, minus_one_ptid)) | |
4885 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4886 | else |
79d7f229 | 4887 | set_continue_thread (ptid); |
506fb367 | 4888 | |
2e9f7625 | 4889 | buf = rs->buf; |
b2175913 MS |
4890 | if (execution_direction == EXEC_REVERSE) |
4891 | { | |
4892 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4893 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4894 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4895 | siggnal); |
40ab02ce | 4896 | |
4082afcc | 4897 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 4898 | error (_("Remote reverse-step not supported.")); |
4082afcc | 4899 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 4900 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4901 | |
b2175913 MS |
4902 | strcpy (buf, step ? "bs" : "bc"); |
4903 | } | |
a493e3e2 | 4904 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4905 | { |
4906 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4907 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4908 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4909 | buf[3] = '\0'; |
4910 | } | |
4911 | else | |
c5aa993b | 4912 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4913 | |
44eaed12 | 4914 | putpkt (buf); |
43ff13b4 | 4915 | |
75c99385 | 4916 | done: |
2acceee2 | 4917 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4918 | with the event loop. NOTE: this is the one place where all the |
4919 | execution commands end up. We could alternatively do this in each | |
23860348 | 4920 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4921 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4922 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4923 | NOT asynchronously. */ |
362646f5 | 4924 | if (target_can_async_p ()) |
6a3753b3 | 4925 | target_async (1); |
e24a49d8 PA |
4926 | |
4927 | /* We've just told the target to resume. The remote server will | |
4928 | wait for the inferior to stop, and then send a stop reply. In | |
4929 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4930 | because the stub wouldn't be ready to process it. This applies |
4931 | only to the base all-stop protocol, however. In non-stop (which | |
4932 | only supports vCont), the stub replies with an "OK", and is | |
4933 | immediate able to process further serial input. */ | |
4934 | if (!non_stop) | |
4935 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4936 | } |
c906108c | 4937 | \f |
43ff13b4 JM |
4938 | |
4939 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4940 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4941 | static void |
934b9bac | 4942 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 4943 | { |
934b9bac | 4944 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
4945 | } |
4946 | ||
23860348 | 4947 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4948 | static void |
934b9bac | 4949 | async_handle_remote_sigint (int sig) |
43ff13b4 | 4950 | { |
934b9bac | 4951 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
4952 | /* Note we need to go through gdb_call_async_signal_handler in order |
4953 | to wake up the event loop on Windows. */ | |
4954 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
4955 | } |
4956 | ||
4957 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4958 | sent once. It will take effect the second time that the user sends | |
23860348 | 4959 | a ^C. */ |
43ff13b4 | 4960 | static void |
934b9bac | 4961 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 4962 | { |
934b9bac | 4963 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
4964 | /* See note in async_handle_remote_sigint. */ |
4965 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
4966 | } |
4967 | ||
6426a772 | 4968 | /* Perform the real interruption of the target execution, in response |
23860348 | 4969 | to a ^C. */ |
c5aa993b | 4970 | static void |
fba45db2 | 4971 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4972 | { |
4973 | if (remote_debug) | |
248fd3bf | 4974 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4975 | |
94cc34af | 4976 | target_stop (inferior_ptid); |
43ff13b4 JM |
4977 | } |
4978 | ||
0df8b418 | 4979 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4980 | up on the target alltogether. */ |
47e1ce27 | 4981 | static void |
fba45db2 | 4982 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4983 | { |
2df3850c | 4984 | if (remote_debug) |
248fd3bf | 4985 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4986 | |
4987 | interrupt_query (); | |
43ff13b4 JM |
4988 | } |
4989 | ||
4990 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4991 | stopped. */ |
6426a772 | 4992 | static void |
934b9bac | 4993 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
4994 | { |
4995 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4996 | } |
4997 | ||
c906108c SS |
4998 | /* Send ^C to target to halt it. Target will respond, and send us a |
4999 | packet. */ | |
507f3c78 | 5000 | static void (*ofunc) (int); |
c906108c | 5001 | |
0df8b418 MS |
5002 | /* The command line interface's stop routine. This function is installed |
5003 | as a signal handler for SIGINT. The first time a user requests a | |
5004 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5005 | response from the target (it didn't stop when the user requested it), |
23860348 | 5006 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5007 | static void |
934b9bac | 5008 | sync_remote_interrupt (int signo) |
c906108c | 5009 | { |
23860348 | 5010 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5011 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5012 | |
934b9bac | 5013 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5014 | } |
5015 | ||
5016 | /* The user typed ^C twice. */ | |
5017 | ||
5018 | static void | |
934b9bac | 5019 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5020 | { |
5021 | signal (signo, ofunc); | |
934b9bac JK |
5022 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5023 | signal (signo, sync_remote_interrupt); | |
c906108c | 5024 | } |
7a292a7a | 5025 | |
74531fed PA |
5026 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5027 | thread, all threads of a remote process, or all threads of all | |
5028 | processes. */ | |
5029 | ||
5030 | static void | |
5031 | remote_stop_ns (ptid_t ptid) | |
5032 | { | |
5033 | struct remote_state *rs = get_remote_state (); | |
5034 | char *p = rs->buf; | |
5035 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5036 | |
4082afcc | 5037 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5038 | remote_vcont_probe (rs); |
5039 | ||
d458bd84 | 5040 | if (!rs->supports_vCont.t) |
74531fed PA |
5041 | error (_("Remote server does not support stopping threads")); |
5042 | ||
f91d3df5 PA |
5043 | if (ptid_equal (ptid, minus_one_ptid) |
5044 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5045 | p += xsnprintf (p, endp - p, "vCont;t"); |
5046 | else | |
5047 | { | |
5048 | ptid_t nptid; | |
5049 | ||
74531fed PA |
5050 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5051 | ||
5052 | if (ptid_is_pid (ptid)) | |
5053 | /* All (-1) threads of process. */ | |
ba348170 | 5054 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5055 | else |
5056 | { | |
5057 | /* Small optimization: if we already have a stop reply for | |
5058 | this thread, no use in telling the stub we want this | |
5059 | stopped. */ | |
5060 | if (peek_stop_reply (ptid)) | |
5061 | return; | |
5062 | ||
5063 | nptid = ptid; | |
5064 | } | |
5065 | ||
a9cbf802 | 5066 | write_ptid (p, endp, nptid); |
74531fed PA |
5067 | } |
5068 | ||
5069 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5070 | come in asynchronously by notification. */ | |
5071 | putpkt (rs->buf); | |
5072 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5073 | if (strcmp (rs->buf, "OK") != 0) | |
5074 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5075 | } | |
5076 | ||
5077 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5078 | remote target. It is undefined which thread of which process | |
5079 | reports the stop. */ | |
5080 | ||
5081 | static void | |
5082 | remote_stop_as (ptid_t ptid) | |
5083 | { | |
5084 | struct remote_state *rs = get_remote_state (); | |
5085 | ||
3a29589a DJ |
5086 | rs->ctrlc_pending_p = 1; |
5087 | ||
74531fed PA |
5088 | /* If the inferior is stopped already, but the core didn't know |
5089 | about it yet, just ignore the request. The cached wait status | |
5090 | will be collected in remote_wait. */ | |
5091 | if (rs->cached_wait_status) | |
5092 | return; | |
5093 | ||
9a7071a8 JB |
5094 | /* Send interrupt_sequence to remote target. */ |
5095 | send_interrupt_sequence (); | |
74531fed PA |
5096 | } |
5097 | ||
0df8b418 | 5098 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5099 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5100 | will eventually end up here. */ |
74531fed | 5101 | |
c906108c | 5102 | static void |
1eab8a48 | 5103 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5104 | { |
7a292a7a | 5105 | if (remote_debug) |
0f71a2f6 | 5106 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5107 | |
74531fed PA |
5108 | if (non_stop) |
5109 | remote_stop_ns (ptid); | |
c906108c | 5110 | else |
74531fed | 5111 | remote_stop_as (ptid); |
c906108c SS |
5112 | } |
5113 | ||
5114 | /* Ask the user what to do when an interrupt is received. */ | |
5115 | ||
5116 | static void | |
fba45db2 | 5117 | interrupt_query (void) |
c906108c SS |
5118 | { |
5119 | target_terminal_ours (); | |
5120 | ||
d9d41e78 | 5121 | if (target_is_async_p ()) |
c906108c | 5122 | { |
74531fed | 5123 | signal (SIGINT, handle_sigint); |
039e3c22 | 5124 | quit (); |
c906108c | 5125 | } |
74531fed PA |
5126 | else |
5127 | { | |
9e2f0ad4 HZ |
5128 | if (query (_("Interrupted while waiting for the program.\n\ |
5129 | Give up (and stop debugging it)? "))) | |
74531fed | 5130 | { |
78a095c3 | 5131 | remote_unpush_target (); |
039e3c22 | 5132 | quit (); |
74531fed PA |
5133 | } |
5134 | } | |
c906108c SS |
5135 | |
5136 | target_terminal_inferior (); | |
5137 | } | |
5138 | ||
6426a772 JM |
5139 | /* Enable/disable target terminal ownership. Most targets can use |
5140 | terminal groups to control terminal ownership. Remote targets are | |
5141 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5142 | is required. */ |
6426a772 JM |
5143 | |
5144 | static void | |
d2f640d4 | 5145 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5146 | { |
c6ebd6cf | 5147 | if (!target_async_permitted) |
75c99385 PA |
5148 | /* Nothing to do. */ |
5149 | return; | |
5150 | ||
d9d2d8b6 PA |
5151 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5152 | idempotent. The event-loop GDB talking to an asynchronous target | |
5153 | with a synchronous command calls this function from both | |
5154 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5155 | transfer the terminal to the target when it shouldn't this guard | |
5156 | can go away. */ | |
6426a772 JM |
5157 | if (!remote_async_terminal_ours_p) |
5158 | return; | |
5159 | delete_file_handler (input_fd); | |
5160 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5161 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5162 | /* NOTE: At this point we could also register our selves as the |
5163 | recipient of all input. Any characters typed could then be | |
23860348 | 5164 | passed on down to the target. */ |
6426a772 JM |
5165 | } |
5166 | ||
5167 | static void | |
e3594fd1 | 5168 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5169 | { |
c6ebd6cf | 5170 | if (!target_async_permitted) |
75c99385 PA |
5171 | /* Nothing to do. */ |
5172 | return; | |
5173 | ||
5174 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5175 | if (remote_async_terminal_ours_p) |
5176 | return; | |
934b9bac | 5177 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5178 | add_file_handler (input_fd, stdin_event_handler, 0); |
5179 | remote_async_terminal_ours_p = 1; | |
5180 | } | |
5181 | ||
176a6961 | 5182 | static void |
917317f4 | 5183 | remote_console_output (char *msg) |
c906108c SS |
5184 | { |
5185 | char *p; | |
5186 | ||
c5aa993b | 5187 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5188 | { |
5189 | char tb[2]; | |
5190 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5191 | |
c906108c SS |
5192 | tb[0] = c; |
5193 | tb[1] = 0; | |
43ff13b4 | 5194 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5195 | } |
00db5b94 PA |
5196 | gdb_flush (gdb_stdtarg); |
5197 | } | |
74531fed PA |
5198 | |
5199 | typedef struct cached_reg | |
5200 | { | |
5201 | int num; | |
5202 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5203 | } cached_reg_t; | |
5204 | ||
5205 | DEF_VEC_O(cached_reg_t); | |
5206 | ||
722247f1 | 5207 | typedef struct stop_reply |
74531fed | 5208 | { |
722247f1 | 5209 | struct notif_event base; |
74531fed | 5210 | |
722247f1 | 5211 | /* The identifier of the thread about this event */ |
74531fed PA |
5212 | ptid_t ptid; |
5213 | ||
340e3c99 | 5214 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5215 | connection, represented by a remote_state object, is closed, |
5216 | all the associated stop_reply events should be released. */ | |
5217 | struct remote_state *rs; | |
5218 | ||
74531fed PA |
5219 | struct target_waitstatus ws; |
5220 | ||
15148d6a PA |
5221 | /* Expedited registers. This makes remote debugging a bit more |
5222 | efficient for those targets that provide critical registers as | |
5223 | part of their normal status mechanism (as another roundtrip to | |
5224 | fetch them is avoided). */ | |
74531fed PA |
5225 | VEC(cached_reg_t) *regcache; |
5226 | ||
f7e6eed5 PA |
5227 | enum target_stop_reason stop_reason; |
5228 | ||
74531fed PA |
5229 | CORE_ADDR watch_data_address; |
5230 | ||
dc146f7c | 5231 | int core; |
722247f1 | 5232 | } *stop_reply_p; |
a744cf53 | 5233 | |
722247f1 YQ |
5234 | DECLARE_QUEUE_P (stop_reply_p); |
5235 | DEFINE_QUEUE_P (stop_reply_p); | |
5236 | /* The list of already fetched and acknowledged stop events. This | |
5237 | queue is used for notification Stop, and other notifications | |
5238 | don't need queue for their events, because the notification events | |
5239 | of Stop can't be consumed immediately, so that events should be | |
5240 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5241 | time. Other notifications can consume their events immediately, | |
5242 | so queue is not needed for them. */ | |
5243 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5244 | |
5245 | static void | |
5246 | stop_reply_xfree (struct stop_reply *r) | |
5247 | { | |
f48ff2a7 | 5248 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5249 | } |
5250 | ||
722247f1 YQ |
5251 | static void |
5252 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5253 | struct notif_event *event) | |
5254 | { | |
5255 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5256 | } | |
5257 | ||
5258 | static void | |
5259 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5260 | struct notif_event *event) | |
5261 | { | |
5262 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5263 | ||
5264 | /* acknowledge */ | |
5265 | putpkt ((char *) self->ack_command); | |
5266 | ||
5267 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5268 | /* We got an unknown stop reply. */ | |
5269 | error (_("Unknown stop reply")); | |
5270 | ||
5271 | push_stop_reply (stop_reply); | |
5272 | } | |
5273 | ||
5274 | static int | |
5275 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5276 | { | |
5277 | /* We can't get pending events in remote_notif_process for | |
5278 | notification stop, and we have to do this in remote_wait_ns | |
5279 | instead. If we fetch all queued events from stub, remote stub | |
5280 | may exit and we have no chance to process them back in | |
5281 | remote_wait_ns. */ | |
5282 | mark_async_event_handler (remote_async_inferior_event_token); | |
5283 | return 0; | |
5284 | } | |
5285 | ||
5286 | static void | |
5287 | stop_reply_dtr (struct notif_event *event) | |
5288 | { | |
5289 | struct stop_reply *r = (struct stop_reply *) event; | |
5290 | ||
5291 | VEC_free (cached_reg_t, r->regcache); | |
5292 | } | |
5293 | ||
5294 | static struct notif_event * | |
5295 | remote_notif_stop_alloc_reply (void) | |
5296 | { | |
5297 | struct notif_event *r | |
70ba0933 | 5298 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5299 | |
5300 | r->dtr = stop_reply_dtr; | |
5301 | ||
5302 | return r; | |
5303 | } | |
5304 | ||
5305 | /* A client of notification Stop. */ | |
5306 | ||
5307 | struct notif_client notif_client_stop = | |
5308 | { | |
5309 | "Stop", | |
5310 | "vStopped", | |
5311 | remote_notif_stop_parse, | |
5312 | remote_notif_stop_ack, | |
5313 | remote_notif_stop_can_get_pending_events, | |
5314 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5315 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5316 | }; |
5317 | ||
5318 | /* A parameter to pass data in and out. */ | |
5319 | ||
5320 | struct queue_iter_param | |
5321 | { | |
5322 | void *input; | |
5323 | struct stop_reply *output; | |
5324 | }; | |
5325 | ||
f48ff2a7 YQ |
5326 | /* Remove stop replies in the queue if its pid is equal to the given |
5327 | inferior's pid. */ | |
722247f1 YQ |
5328 | |
5329 | static int | |
f48ff2a7 YQ |
5330 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5331 | QUEUE_ITER (stop_reply_p) *iter, | |
5332 | stop_reply_p event, | |
5333 | void *data) | |
722247f1 YQ |
5334 | { |
5335 | struct queue_iter_param *param = data; | |
5336 | struct inferior *inf = param->input; | |
5337 | ||
f48ff2a7 | 5338 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5339 | { |
5340 | stop_reply_xfree (event); | |
5341 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5342 | } | |
5343 | ||
5344 | return 1; | |
5345 | } | |
5346 | ||
f48ff2a7 | 5347 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5348 | |
74531fed | 5349 | static void |
5f4cf0bb | 5350 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5351 | { |
722247f1 YQ |
5352 | int i; |
5353 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5354 | struct stop_reply *reply; |
5355 | struct remote_state *rs = get_remote_state (); | |
5356 | struct remote_notif_state *rns = rs->notif_state; | |
5357 | ||
5358 | /* This function can be notified when an inferior exists. When the | |
5359 | target is not remote, the notification state is NULL. */ | |
5360 | if (rs->remote_desc == NULL) | |
5361 | return; | |
5362 | ||
5363 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5364 | |
74531fed | 5365 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5366 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5367 | { |
722247f1 | 5368 | stop_reply_xfree (reply); |
f48ff2a7 | 5369 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5370 | } |
c906108c | 5371 | |
722247f1 YQ |
5372 | param.input = inf; |
5373 | param.output = NULL; | |
74531fed PA |
5374 | /* Discard the stop replies we have already pulled with |
5375 | vStopped. */ | |
722247f1 | 5376 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5377 | remove_stop_reply_for_inferior, ¶m); |
5378 | } | |
5379 | ||
bcc75809 YQ |
5380 | /* If its remote state is equal to the given remote state, |
5381 | remove EVENT from the stop reply queue. */ | |
5382 | ||
5383 | static int | |
5384 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5385 | QUEUE_ITER (stop_reply_p) *iter, | |
5386 | stop_reply_p event, | |
5387 | void *data) | |
5388 | { | |
5389 | struct queue_iter_param *param = data; | |
5390 | struct remote_state *rs = param->input; | |
5391 | ||
5392 | if (event->rs == rs) | |
5393 | { | |
5394 | stop_reply_xfree (event); | |
5395 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5396 | } | |
5397 | ||
5398 | return 1; | |
5399 | } | |
5400 | ||
5401 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5402 | |
5403 | static void | |
bcc75809 | 5404 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5405 | { |
5406 | struct queue_iter_param param; | |
5407 | ||
bcc75809 | 5408 | param.input = rs; |
f48ff2a7 YQ |
5409 | param.output = NULL; |
5410 | /* Discard the stop replies we have already pulled with | |
5411 | vStopped. */ | |
5412 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5413 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5414 | } |
74531fed | 5415 | |
722247f1 YQ |
5416 | /* A parameter to pass data in and out. */ |
5417 | ||
5418 | static int | |
5419 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5420 | QUEUE_ITER (stop_reply_p) *iter, | |
5421 | stop_reply_p event, | |
5422 | void *data) | |
5423 | { | |
5424 | struct queue_iter_param *param = data; | |
5425 | ptid_t *ptid = param->input; | |
5426 | ||
5427 | if (ptid_match (event->ptid, *ptid)) | |
5428 | { | |
5429 | param->output = event; | |
5430 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5431 | return 0; | |
c8e38a49 | 5432 | } |
722247f1 YQ |
5433 | |
5434 | return 1; | |
74531fed | 5435 | } |
43ff13b4 | 5436 | |
722247f1 YQ |
5437 | /* Remove the first reply in 'stop_reply_queue' which matches |
5438 | PTID. */ | |
2e9f7625 | 5439 | |
722247f1 YQ |
5440 | static struct stop_reply * |
5441 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5442 | { |
722247f1 YQ |
5443 | struct queue_iter_param param; |
5444 | ||
5445 | param.input = &ptid; | |
5446 | param.output = NULL; | |
5447 | ||
5448 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5449 | remote_notif_remove_once_on_match, ¶m); | |
5450 | if (notif_debug) | |
5451 | fprintf_unfiltered (gdb_stdlog, | |
5452 | "notif: discard queued event: 'Stop' in %s\n", | |
5453 | target_pid_to_str (ptid)); | |
a744cf53 | 5454 | |
722247f1 | 5455 | return param.output; |
74531fed | 5456 | } |
75c99385 | 5457 | |
74531fed PA |
5458 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5459 | remove it from the queue, and return it. Returns NULL if none is | |
5460 | found. If there are still queued events left to process, tell the | |
5461 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5462 | |
74531fed PA |
5463 | static struct stop_reply * |
5464 | queued_stop_reply (ptid_t ptid) | |
5465 | { | |
722247f1 | 5466 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5467 | |
722247f1 | 5468 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5469 | /* There's still at least an event left. */ |
5470 | mark_async_event_handler (remote_async_inferior_event_token); | |
5471 | ||
722247f1 | 5472 | return r; |
74531fed PA |
5473 | } |
5474 | ||
5475 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5476 | know that we now have at least one queued event left to pass to the | |
5477 | core side, tell the event loop to get back to target_wait soon. */ | |
5478 | ||
5479 | static void | |
5480 | push_stop_reply (struct stop_reply *new_event) | |
5481 | { | |
722247f1 | 5482 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5483 | |
722247f1 YQ |
5484 | if (notif_debug) |
5485 | fprintf_unfiltered (gdb_stdlog, | |
5486 | "notif: push 'Stop' %s to queue %d\n", | |
5487 | target_pid_to_str (new_event->ptid), | |
5488 | QUEUE_length (stop_reply_p, | |
5489 | stop_reply_queue)); | |
74531fed PA |
5490 | |
5491 | mark_async_event_handler (remote_async_inferior_event_token); | |
5492 | } | |
5493 | ||
722247f1 YQ |
5494 | static int |
5495 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5496 | QUEUE_ITER (stop_reply_p) *iter, | |
5497 | struct stop_reply *event, | |
5498 | void *data) | |
5499 | { | |
5500 | ptid_t *ptid = data; | |
5501 | ||
5502 | return !(ptid_equal (*ptid, event->ptid) | |
5503 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5504 | } | |
5505 | ||
74531fed PA |
5506 | /* Returns true if we have a stop reply for PTID. */ |
5507 | ||
5508 | static int | |
5509 | peek_stop_reply (ptid_t ptid) | |
5510 | { | |
722247f1 YQ |
5511 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5512 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5513 | } |
5514 | ||
1f10ba14 PA |
5515 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5516 | ||
5517 | static char * | |
5518 | skip_to_semicolon (char *p) | |
5519 | { | |
5520 | while (*p != '\0' && *p != ';') | |
5521 | p++; | |
5522 | return p; | |
5523 | } | |
5524 | ||
74531fed PA |
5525 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5526 | result is stored in EVENT, or throws an error. */ | |
5527 | ||
5528 | static void | |
5529 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5530 | { | |
5531 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5532 | ULONGEST addr; | |
5533 | char *p; | |
5534 | ||
5535 | event->ptid = null_ptid; | |
bcc75809 | 5536 | event->rs = get_remote_state (); |
74531fed PA |
5537 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5538 | event->ws.value.integer = 0; | |
f7e6eed5 | 5539 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 5540 | event->regcache = NULL; |
dc146f7c | 5541 | event->core = -1; |
74531fed PA |
5542 | |
5543 | switch (buf[0]) | |
5544 | { | |
5545 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5546 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5547 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5548 | ss = signal number | |
5549 | n... = register number | |
5550 | r... = register contents | |
5551 | */ | |
5552 | ||
5553 | p = &buf[3]; /* after Txx */ | |
5554 | while (*p) | |
5555 | { | |
5556 | char *p1; | |
cea39f65 | 5557 | int fieldsize; |
43ff13b4 | 5558 | |
1f10ba14 PA |
5559 | p1 = strchr (p, ':'); |
5560 | if (p1 == NULL) | |
5561 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
5562 | Packet: '%s'\n"), | |
5563 | p, buf); | |
5564 | if (p == p1) | |
5565 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
5566 | Packet: '%s'\n"), | |
5567 | p, buf); | |
3c3bea1c | 5568 | |
1f10ba14 PA |
5569 | /* Some "registers" are actually extended stop information. |
5570 | Note if you're adding a new entry here: GDB 7.9 and | |
5571 | earlier assume that all register "numbers" that start | |
5572 | with an hex digit are real register numbers. Make sure | |
5573 | the server only sends such a packet if it knows the | |
5574 | client understands it. */ | |
c8e38a49 | 5575 | |
1f10ba14 PA |
5576 | if (strncmp (p, "thread", p1 - p) == 0) |
5577 | event->ptid = read_ptid (++p1, &p); | |
5578 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5579 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5580 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
cea39f65 | 5581 | { |
f7e6eed5 | 5582 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
5583 | p = unpack_varlen_hex (++p1, &addr); |
5584 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 5585 | } |
f7e6eed5 PA |
5586 | else if (strncmp (p, "swbreak", p1 - p) == 0) |
5587 | { | |
5588 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
5589 | ||
5590 | /* Make sure the stub doesn't forget to indicate support | |
5591 | with qSupported. */ | |
5592 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
5593 | error (_("Unexpected swbreak stop reason")); | |
5594 | ||
5595 | /* The value part is documented as "must be empty", | |
5596 | though we ignore it, in case we ever decide to make | |
5597 | use of it in a backward compatible way. */ | |
5598 | p = skip_to_semicolon (p1 + 1); | |
5599 | } | |
5600 | else if (strncmp (p, "hwbreak", p1 - p) == 0) | |
5601 | { | |
5602 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
5603 | ||
5604 | /* Make sure the stub doesn't forget to indicate support | |
5605 | with qSupported. */ | |
5606 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
5607 | error (_("Unexpected hwbreak stop reason")); | |
5608 | ||
5609 | /* See above. */ | |
5610 | p = skip_to_semicolon (p1 + 1); | |
5611 | } | |
1f10ba14 | 5612 | else if (strncmp (p, "library", p1 - p) == 0) |
cea39f65 | 5613 | { |
1f10ba14 PA |
5614 | event->ws.kind = TARGET_WAITKIND_LOADED; |
5615 | p = skip_to_semicolon (p1 + 1); | |
5616 | } | |
5617 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5618 | { | |
5619 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
5620 | /* p1 will indicate "begin" or "end", but it makes | |
5621 | no difference for now, so ignore it. */ | |
5622 | p = skip_to_semicolon (p1 + 1); | |
5623 | } | |
5624 | else if (strncmp (p, "core", p1 - p) == 0) | |
5625 | { | |
5626 | ULONGEST c; | |
a744cf53 | 5627 | |
1f10ba14 PA |
5628 | p = unpack_varlen_hex (++p1, &c); |
5629 | event->core = c; | |
cea39f65 MS |
5630 | } |
5631 | else | |
5632 | { | |
1f10ba14 PA |
5633 | ULONGEST pnum; |
5634 | char *p_temp; | |
5635 | ||
5636 | /* Maybe a real ``P'' register number. */ | |
5637 | p_temp = unpack_varlen_hex (p, &pnum); | |
5638 | /* If the first invalid character is the colon, we got a | |
5639 | register number. Otherwise, it's an unknown stop | |
5640 | reason. */ | |
5641 | if (p_temp == p1) | |
5642 | { | |
5643 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5644 | cached_reg_t cached_reg; | |
43ff13b4 | 5645 | |
1f10ba14 PA |
5646 | if (reg == NULL) |
5647 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5648 | Packet: '%s'\n"), |
1f10ba14 | 5649 | hex_string (pnum), p, buf); |
c8e38a49 | 5650 | |
1f10ba14 | 5651 | cached_reg.num = reg->regnum; |
4100683b | 5652 | |
1f10ba14 PA |
5653 | p = p1 + 1; |
5654 | fieldsize = hex2bin (p, cached_reg.data, | |
5655 | register_size (target_gdbarch (), | |
5656 | reg->regnum)); | |
5657 | p += 2 * fieldsize; | |
5658 | if (fieldsize < register_size (target_gdbarch (), | |
5659 | reg->regnum)) | |
5660 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5661 | |
1f10ba14 PA |
5662 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5663 | } | |
5664 | else | |
5665 | { | |
5666 | /* Not a number. Silently skip unknown optional | |
5667 | info. */ | |
5668 | p = skip_to_semicolon (p1 + 1); | |
5669 | } | |
cea39f65 | 5670 | } |
c8e38a49 | 5671 | |
cea39f65 MS |
5672 | if (*p != ';') |
5673 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5674 | buf, p); | |
5675 | ++p; | |
5676 | } | |
5b5596ff PA |
5677 | |
5678 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5679 | break; | |
5680 | ||
c8e38a49 PA |
5681 | /* fall through */ |
5682 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5683 | { |
5684 | int sig; | |
5685 | ||
5686 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5687 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5688 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5689 | event->ws.value.sig = (enum gdb_signal) sig; | |
5690 | else | |
5691 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5692 | } | |
c8e38a49 PA |
5693 | break; |
5694 | case 'W': /* Target exited. */ | |
5695 | case 'X': | |
5696 | { | |
5697 | char *p; | |
5698 | int pid; | |
5699 | ULONGEST value; | |
82f73884 | 5700 | |
c8e38a49 PA |
5701 | /* GDB used to accept only 2 hex chars here. Stubs should |
5702 | only send more if they detect GDB supports multi-process | |
5703 | support. */ | |
5704 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5705 | |
c8e38a49 PA |
5706 | if (buf[0] == 'W') |
5707 | { | |
5708 | /* The remote process exited. */ | |
74531fed PA |
5709 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5710 | event->ws.value.integer = value; | |
c8e38a49 PA |
5711 | } |
5712 | else | |
5713 | { | |
5714 | /* The remote process exited with a signal. */ | |
74531fed | 5715 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
5716 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
5717 | event->ws.value.sig = (enum gdb_signal) value; | |
5718 | else | |
5719 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 5720 | } |
82f73884 | 5721 | |
c8e38a49 PA |
5722 | /* If no process is specified, assume inferior_ptid. */ |
5723 | pid = ptid_get_pid (inferior_ptid); | |
5724 | if (*p == '\0') | |
5725 | ; | |
5726 | else if (*p == ';') | |
5727 | { | |
5728 | p++; | |
5729 | ||
0b24eb2d | 5730 | if (*p == '\0') |
82f73884 | 5731 | ; |
61012eef | 5732 | else if (startswith (p, "process:")) |
82f73884 | 5733 | { |
c8e38a49 | 5734 | ULONGEST upid; |
a744cf53 | 5735 | |
c8e38a49 PA |
5736 | p += sizeof ("process:") - 1; |
5737 | unpack_varlen_hex (p, &upid); | |
5738 | pid = upid; | |
82f73884 PA |
5739 | } |
5740 | else | |
5741 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5742 | } |
c8e38a49 PA |
5743 | else |
5744 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5745 | event->ptid = pid_to_ptid (pid); |
5746 | } | |
5747 | break; | |
5748 | } | |
5749 | ||
5750 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5751 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5752 | } | |
5753 | ||
722247f1 YQ |
5754 | /* When the stub wants to tell GDB about a new notification reply, it |
5755 | sends a notification (%Stop, for example). Those can come it at | |
5756 | any time, hence, we have to make sure that any pending | |
5757 | putpkt/getpkt sequence we're making is finished, before querying | |
5758 | the stub for more events with the corresponding ack command | |
5759 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5760 | immediately upon receiving the notification, something like this | |
5761 | could happen: | |
74531fed PA |
5762 | |
5763 | 1.1) --> Hg 1 | |
5764 | 1.2) <-- OK | |
5765 | 1.3) --> g | |
5766 | 1.4) <-- %Stop | |
5767 | 1.5) --> vStopped | |
5768 | 1.6) <-- (registers reply to step #1.3) | |
5769 | ||
5770 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5771 | query. | |
5772 | ||
796cb314 | 5773 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5774 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5775 | doing whatever we were doing: | |
5776 | ||
5777 | 2.1) --> Hg 1 | |
5778 | 2.2) <-- OK | |
5779 | 2.3) --> g | |
5780 | 2.4) <-- %Stop | |
5781 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5782 | 2.5) <-- (registers reply to step #2.3) | |
5783 | ||
5784 | Eventualy after step #2.5, we return to the event loop, which | |
5785 | notices there's an event on the | |
5786 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5787 | associated callback --- the function below. At this point, we're | |
5788 | always safe to start a vStopped sequence. : | |
5789 | ||
5790 | 2.6) --> vStopped | |
5791 | 2.7) <-- T05 thread:2 | |
5792 | 2.8) --> vStopped | |
5793 | 2.9) --> OK | |
5794 | */ | |
5795 | ||
722247f1 YQ |
5796 | void |
5797 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5798 | { |
5799 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5800 | |
f48ff2a7 | 5801 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 5802 | { |
722247f1 YQ |
5803 | if (notif_debug) |
5804 | fprintf_unfiltered (gdb_stdlog, | |
5805 | "notif: process: '%s' ack pending event\n", | |
5806 | nc->name); | |
74531fed | 5807 | |
722247f1 | 5808 | /* acknowledge */ |
f48ff2a7 YQ |
5809 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
5810 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
5811 | |
5812 | while (1) | |
5813 | { | |
5814 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5815 | if (strcmp (rs->buf, "OK") == 0) | |
5816 | break; | |
5817 | else | |
722247f1 | 5818 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5819 | } |
5820 | } | |
722247f1 YQ |
5821 | else |
5822 | { | |
5823 | if (notif_debug) | |
5824 | fprintf_unfiltered (gdb_stdlog, | |
5825 | "notif: process: '%s' no pending reply\n", | |
5826 | nc->name); | |
5827 | } | |
74531fed PA |
5828 | } |
5829 | ||
74531fed PA |
5830 | /* Called when it is decided that STOP_REPLY holds the info of the |
5831 | event that is to be returned to the core. This function always | |
5832 | destroys STOP_REPLY. */ | |
5833 | ||
5834 | static ptid_t | |
5835 | process_stop_reply (struct stop_reply *stop_reply, | |
5836 | struct target_waitstatus *status) | |
5837 | { | |
5838 | ptid_t ptid; | |
5839 | ||
5840 | *status = stop_reply->ws; | |
5841 | ptid = stop_reply->ptid; | |
5842 | ||
5843 | /* If no thread/process was reported by the stub, assume the current | |
5844 | inferior. */ | |
5845 | if (ptid_equal (ptid, null_ptid)) | |
5846 | ptid = inferior_ptid; | |
5847 | ||
5f3563ea PA |
5848 | if (status->kind != TARGET_WAITKIND_EXITED |
5849 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5850 | { |
ee154bee TT |
5851 | struct remote_state *rs = get_remote_state (); |
5852 | ||
5f3563ea PA |
5853 | /* Expedited registers. */ |
5854 | if (stop_reply->regcache) | |
5855 | { | |
217f1f79 | 5856 | struct regcache *regcache |
f5656ead | 5857 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5858 | cached_reg_t *reg; |
5859 | int ix; | |
5860 | ||
5861 | for (ix = 0; | |
5862 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5863 | ix++) | |
217f1f79 | 5864 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5865 | VEC_free (cached_reg_t, stop_reply->regcache); |
5866 | } | |
74531fed | 5867 | |
f7e6eed5 | 5868 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 5869 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
5870 | |
5871 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5872 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5873 | } |
5874 | ||
74531fed PA |
5875 | stop_reply_xfree (stop_reply); |
5876 | return ptid; | |
5877 | } | |
5878 | ||
5879 | /* The non-stop mode version of target_wait. */ | |
5880 | ||
5881 | static ptid_t | |
47608cb1 | 5882 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5883 | { |
5884 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5885 | struct stop_reply *stop_reply; |
5886 | int ret; | |
fee9eda9 | 5887 | int is_notif = 0; |
74531fed PA |
5888 | |
5889 | /* If in non-stop mode, get out of getpkt even if a | |
5890 | notification is received. */ | |
5891 | ||
5892 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5893 | 0 /* forever */, &is_notif); |
74531fed PA |
5894 | while (1) |
5895 | { | |
fee9eda9 | 5896 | if (ret != -1 && !is_notif) |
74531fed PA |
5897 | switch (rs->buf[0]) |
5898 | { | |
5899 | case 'E': /* Error of some sort. */ | |
5900 | /* We're out of sync with the target now. Did it continue | |
5901 | or not? We can't tell which thread it was in non-stop, | |
5902 | so just ignore this. */ | |
5903 | warning (_("Remote failure reply: %s"), rs->buf); | |
5904 | break; | |
5905 | case 'O': /* Console output. */ | |
5906 | remote_console_output (rs->buf + 1); | |
5907 | break; | |
5908 | default: | |
5909 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5910 | break; | |
5911 | } | |
5912 | ||
5913 | /* Acknowledge a pending stop reply that may have arrived in the | |
5914 | mean time. */ | |
f48ff2a7 | 5915 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 5916 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
5917 | |
5918 | /* If indeed we noticed a stop reply, we're done. */ | |
5919 | stop_reply = queued_stop_reply (ptid); | |
5920 | if (stop_reply != NULL) | |
5921 | return process_stop_reply (stop_reply, status); | |
5922 | ||
47608cb1 | 5923 | /* Still no event. If we're just polling for an event, then |
74531fed | 5924 | return to the event loop. */ |
47608cb1 | 5925 | if (options & TARGET_WNOHANG) |
74531fed PA |
5926 | { |
5927 | status->kind = TARGET_WAITKIND_IGNORE; | |
5928 | return minus_one_ptid; | |
5929 | } | |
5930 | ||
47608cb1 | 5931 | /* Otherwise do a blocking wait. */ |
74531fed | 5932 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5933 | 1 /* forever */, &is_notif); |
74531fed PA |
5934 | } |
5935 | } | |
5936 | ||
5937 | /* Wait until the remote machine stops, then return, storing status in | |
5938 | STATUS just as `wait' would. */ | |
5939 | ||
5940 | static ptid_t | |
47608cb1 | 5941 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5942 | { |
5943 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5944 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5945 | char *buf; |
74531fed PA |
5946 | struct stop_reply *stop_reply; |
5947 | ||
47608cb1 PA |
5948 | again: |
5949 | ||
74531fed PA |
5950 | status->kind = TARGET_WAITKIND_IGNORE; |
5951 | status->value.integer = 0; | |
5952 | ||
5953 | stop_reply = queued_stop_reply (ptid); | |
5954 | if (stop_reply != NULL) | |
5955 | return process_stop_reply (stop_reply, status); | |
5956 | ||
5957 | if (rs->cached_wait_status) | |
5958 | /* Use the cached wait status, but only once. */ | |
5959 | rs->cached_wait_status = 0; | |
5960 | else | |
5961 | { | |
5962 | int ret; | |
722247f1 | 5963 | int is_notif; |
74531fed PA |
5964 | |
5965 | if (!target_is_async_p ()) | |
5966 | { | |
934b9bac | 5967 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
5968 | /* If the user hit C-c before this packet, or between packets, |
5969 | pretend that it was hit right here. */ | |
522002f9 | 5970 | if (check_quit_flag ()) |
74531fed | 5971 | { |
522002f9 | 5972 | clear_quit_flag (); |
934b9bac | 5973 | sync_remote_interrupt (SIGINT); |
74531fed PA |
5974 | } |
5975 | } | |
5976 | ||
5977 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5978 | _never_ wait for ever -> test on target_is_async_p(). | |
5979 | However, before we do that we need to ensure that the caller | |
5980 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
5981 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5982 | wait_forever_enabled_p, &is_notif); | |
5983 | ||
5e1b953b SDJ |
5984 | if (!target_is_async_p ()) |
5985 | signal (SIGINT, ofunc); | |
5986 | ||
722247f1 YQ |
5987 | /* GDB gets a notification. Return to core as this event is |
5988 | not interesting. */ | |
5989 | if (ret != -1 && is_notif) | |
5990 | return minus_one_ptid; | |
74531fed PA |
5991 | } |
5992 | ||
5993 | buf = rs->buf; | |
5994 | ||
f7e6eed5 | 5995 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
5996 | |
5997 | /* We got something. */ | |
5998 | rs->waiting_for_stop_reply = 0; | |
5999 | ||
3a29589a DJ |
6000 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6001 | an 'F' or 'O' packet. */ | |
6002 | if (buf[0] != 'F' && buf[0] != 'O') | |
6003 | rs->ctrlc_pending_p = 0; | |
6004 | ||
74531fed PA |
6005 | switch (buf[0]) |
6006 | { | |
6007 | case 'E': /* Error of some sort. */ | |
6008 | /* We're out of sync with the target now. Did it continue or | |
6009 | not? Not is more likely, so report a stop. */ | |
6010 | warning (_("Remote failure reply: %s"), buf); | |
6011 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6012 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6013 | break; |
6014 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6015 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6016 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6017 | break; |
6018 | case 'T': case 'S': case 'X': case 'W': | |
6019 | { | |
722247f1 YQ |
6020 | struct stop_reply *stop_reply |
6021 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6022 | rs->buf); | |
74531fed | 6023 | |
74531fed | 6024 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6025 | break; |
6026 | } | |
6027 | case 'O': /* Console output. */ | |
6028 | remote_console_output (buf + 1); | |
e24a49d8 | 6029 | |
c8e38a49 PA |
6030 | /* The target didn't really stop; keep waiting. */ |
6031 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6032 | |
c8e38a49 PA |
6033 | break; |
6034 | case '\0': | |
b73be471 | 6035 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6036 | { |
6037 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6038 | remote system doesn't support it. */ | |
6039 | target_terminal_ours_for_output (); | |
6040 | printf_filtered | |
6041 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6042 | gdb_signal_to_name (rs->last_sent_signal)); |
6043 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6044 | target_terminal_inferior (); |
6045 | ||
280ceea3 | 6046 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6047 | putpkt ((char *) buf); |
6048 | ||
6049 | /* We just told the target to resume, so a stop reply is in | |
6050 | order. */ | |
e24a49d8 | 6051 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6052 | break; |
43ff13b4 | 6053 | } |
c8e38a49 PA |
6054 | /* else fallthrough */ |
6055 | default: | |
6056 | warning (_("Invalid remote reply: %s"), buf); | |
6057 | /* Keep waiting. */ | |
6058 | rs->waiting_for_stop_reply = 1; | |
6059 | break; | |
43ff13b4 | 6060 | } |
c8e38a49 | 6061 | |
c8e38a49 | 6062 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6063 | { |
6064 | /* Nothing interesting happened. If we're doing a non-blocking | |
6065 | poll, we're done. Otherwise, go back to waiting. */ | |
6066 | if (options & TARGET_WNOHANG) | |
6067 | return minus_one_ptid; | |
6068 | else | |
6069 | goto again; | |
6070 | } | |
74531fed PA |
6071 | else if (status->kind != TARGET_WAITKIND_EXITED |
6072 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6073 | { |
6074 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6075 | record_currthread (rs, event_ptid); |
82f73884 PA |
6076 | else |
6077 | event_ptid = inferior_ptid; | |
43ff13b4 | 6078 | } |
74531fed PA |
6079 | else |
6080 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6081 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6082 | |
82f73884 | 6083 | return event_ptid; |
43ff13b4 JM |
6084 | } |
6085 | ||
74531fed PA |
6086 | /* Wait until the remote machine stops, then return, storing status in |
6087 | STATUS just as `wait' would. */ | |
6088 | ||
c8e38a49 | 6089 | static ptid_t |
117de6a9 | 6090 | remote_wait (struct target_ops *ops, |
47608cb1 | 6091 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6092 | { |
6093 | ptid_t event_ptid; | |
6094 | ||
74531fed | 6095 | if (non_stop) |
47608cb1 | 6096 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6097 | else |
47608cb1 | 6098 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6099 | |
d9d41e78 | 6100 | if (target_is_async_p ()) |
c8e38a49 | 6101 | { |
74531fed PA |
6102 | /* If there are are events left in the queue tell the event loop |
6103 | to return here. */ | |
722247f1 | 6104 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6105 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6106 | } |
c8e38a49 PA |
6107 | |
6108 | return event_ptid; | |
6109 | } | |
6110 | ||
74ca34ce | 6111 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6112 | |
b96ec7ac | 6113 | static int |
56be3814 | 6114 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6115 | { |
6116 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6117 | char *buf, *p; |
b96ec7ac AC |
6118 | char regp[MAX_REGISTER_SIZE]; |
6119 | int i; | |
6120 | ||
4082afcc | 6121 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6122 | return 0; |
6123 | ||
6124 | if (reg->pnum == -1) | |
6125 | return 0; | |
6126 | ||
2e9f7625 | 6127 | p = rs->buf; |
fcad0fa4 | 6128 | *p++ = 'p'; |
74ca34ce | 6129 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6130 | *p++ = '\0'; |
1f4437a4 MS |
6131 | putpkt (rs->buf); |
6132 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6133 | |
2e9f7625 DJ |
6134 | buf = rs->buf; |
6135 | ||
74ca34ce DJ |
6136 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6137 | { | |
6138 | case PACKET_OK: | |
6139 | break; | |
6140 | case PACKET_UNKNOWN: | |
6141 | return 0; | |
6142 | case PACKET_ERROR: | |
27a9c0bf MS |
6143 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6144 | gdbarch_register_name (get_regcache_arch (regcache), | |
6145 | reg->regnum), | |
6146 | buf); | |
74ca34ce | 6147 | } |
3f9a994c JB |
6148 | |
6149 | /* If this register is unfetchable, tell the regcache. */ | |
6150 | if (buf[0] == 'x') | |
8480adf2 | 6151 | { |
56be3814 | 6152 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6153 | return 1; |
b96ec7ac | 6154 | } |
b96ec7ac | 6155 | |
3f9a994c JB |
6156 | /* Otherwise, parse and supply the value. */ |
6157 | p = buf; | |
6158 | i = 0; | |
6159 | while (p[0] != 0) | |
6160 | { | |
6161 | if (p[1] == 0) | |
74ca34ce | 6162 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6163 | |
6164 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6165 | p += 2; | |
6166 | } | |
56be3814 | 6167 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6168 | return 1; |
b96ec7ac AC |
6169 | } |
6170 | ||
74ca34ce DJ |
6171 | /* Fetch the registers included in the target's 'g' packet. */ |
6172 | ||
29709017 DJ |
6173 | static int |
6174 | send_g_packet (void) | |
c906108c | 6175 | { |
d01949b6 | 6176 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6177 | int buf_len; |
c906108c | 6178 | |
bba74b36 | 6179 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6180 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6181 | |
29709017 DJ |
6182 | /* We can get out of synch in various cases. If the first character |
6183 | in the buffer is not a hex character, assume that has happened | |
6184 | and try to fetch another packet to read. */ | |
6185 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6186 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6187 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6188 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6189 | { | |
6190 | if (remote_debug) | |
6191 | fprintf_unfiltered (gdb_stdlog, | |
6192 | "Bad register packet; fetching a new packet\n"); | |
6193 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6194 | } | |
6195 | ||
74ca34ce DJ |
6196 | buf_len = strlen (rs->buf); |
6197 | ||
6198 | /* Sanity check the received packet. */ | |
6199 | if (buf_len % 2 != 0) | |
6200 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6201 | |
6202 | return buf_len / 2; | |
6203 | } | |
6204 | ||
6205 | static void | |
56be3814 | 6206 | process_g_packet (struct regcache *regcache) |
29709017 | 6207 | { |
4a22f64d | 6208 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6209 | struct remote_state *rs = get_remote_state (); |
6210 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6211 | int i, buf_len; | |
6212 | char *p; | |
6213 | char *regs; | |
6214 | ||
6215 | buf_len = strlen (rs->buf); | |
6216 | ||
6217 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6218 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6219 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6220 | ||
6221 | /* Save the size of the packet sent to us by the target. It is used | |
6222 | as a heuristic when determining the max size of packets that the | |
6223 | target can safely receive. */ | |
6224 | if (rsa->actual_register_packet_size == 0) | |
6225 | rsa->actual_register_packet_size = buf_len; | |
6226 | ||
6227 | /* If this is smaller than we guessed the 'g' packet would be, | |
6228 | update our records. A 'g' reply that doesn't include a register's | |
6229 | value implies either that the register is not available, or that | |
6230 | the 'p' packet must be used. */ | |
6231 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6232 | { |
74ca34ce DJ |
6233 | rsa->sizeof_g_packet = buf_len / 2; |
6234 | ||
4a22f64d | 6235 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6236 | { |
74ca34ce DJ |
6237 | if (rsa->regs[i].pnum == -1) |
6238 | continue; | |
6239 | ||
6240 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6241 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6242 | else |
74ca34ce | 6243 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6244 | } |
74ca34ce | 6245 | } |
b323314b | 6246 | |
74ca34ce | 6247 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6248 | |
6249 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6250 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6251 | |
c906108c SS |
6252 | /* Reply describes registers byte by byte, each byte encoded as two |
6253 | hex characters. Suck them all up, then supply them to the | |
6254 | register cacheing/storage mechanism. */ | |
6255 | ||
74ca34ce | 6256 | p = rs->buf; |
ea9c271d | 6257 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6258 | { |
74ca34ce DJ |
6259 | if (p[0] == 0 || p[1] == 0) |
6260 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6261 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6262 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6263 | |
c906108c | 6264 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6265 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6266 | else |
6267 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6268 | p += 2; | |
6269 | } | |
6270 | ||
a744cf53 MS |
6271 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6272 | { | |
6273 | struct packet_reg *r = &rsa->regs[i]; | |
6274 | ||
6275 | if (r->in_g_packet) | |
6276 | { | |
6277 | if (r->offset * 2 >= strlen (rs->buf)) | |
6278 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6279 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6280 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6281 | else if (rs->buf[r->offset * 2] == 'x') |
6282 | { | |
6283 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6284 | /* The register isn't available, mark it as such (at | |
6285 | the same time setting the value to zero). */ | |
6286 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6287 | } | |
6288 | else | |
6289 | regcache_raw_supply (regcache, r->regnum, | |
6290 | regs + r->offset); | |
6291 | } | |
6292 | } | |
c906108c SS |
6293 | } |
6294 | ||
29709017 | 6295 | static void |
56be3814 | 6296 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6297 | { |
6298 | send_g_packet (); | |
56be3814 | 6299 | process_g_packet (regcache); |
29709017 DJ |
6300 | } |
6301 | ||
e6e4e701 PA |
6302 | /* Make the remote selected traceframe match GDB's selected |
6303 | traceframe. */ | |
6304 | ||
6305 | static void | |
6306 | set_remote_traceframe (void) | |
6307 | { | |
6308 | int newnum; | |
262e1174 | 6309 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6310 | |
262e1174 | 6311 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6312 | return; |
6313 | ||
6314 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6315 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6316 | |
6317 | newnum = target_trace_find (tfind_number, | |
6318 | get_traceframe_number (), 0, 0, NULL); | |
6319 | ||
6320 | /* Should not happen. If it does, all bets are off. */ | |
6321 | if (newnum != get_traceframe_number ()) | |
6322 | warning (_("could not set remote traceframe")); | |
6323 | } | |
6324 | ||
74ca34ce | 6325 | static void |
28439f5e PA |
6326 | remote_fetch_registers (struct target_ops *ops, |
6327 | struct regcache *regcache, int regnum) | |
74ca34ce | 6328 | { |
74ca34ce DJ |
6329 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6330 | int i; | |
6331 | ||
e6e4e701 | 6332 | set_remote_traceframe (); |
79d7f229 | 6333 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6334 | |
6335 | if (regnum >= 0) | |
6336 | { | |
6337 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6338 | |
74ca34ce DJ |
6339 | gdb_assert (reg != NULL); |
6340 | ||
6341 | /* If this register might be in the 'g' packet, try that first - | |
6342 | we are likely to read more than one register. If this is the | |
6343 | first 'g' packet, we might be overly optimistic about its | |
6344 | contents, so fall back to 'p'. */ | |
6345 | if (reg->in_g_packet) | |
6346 | { | |
56be3814 | 6347 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6348 | if (reg->in_g_packet) |
6349 | return; | |
6350 | } | |
6351 | ||
56be3814 | 6352 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6353 | return; |
6354 | ||
6355 | /* This register is not available. */ | |
56be3814 | 6356 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6357 | |
6358 | return; | |
6359 | } | |
6360 | ||
56be3814 | 6361 | fetch_registers_using_g (regcache); |
74ca34ce | 6362 | |
4a22f64d | 6363 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6364 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6365 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6366 | { |
6367 | /* This register is not available. */ | |
56be3814 | 6368 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6369 | } |
6370 | } | |
6371 | ||
c906108c SS |
6372 | /* Prepare to store registers. Since we may send them all (using a |
6373 | 'G' request), we have to read out the ones we don't want to change | |
6374 | first. */ | |
6375 | ||
c5aa993b | 6376 | static void |
f32dbf8c | 6377 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6378 | { |
ea9c271d | 6379 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6380 | int i; |
cfd77fa1 | 6381 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6382 | |
c906108c | 6383 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6384 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6385 | { |
6386 | case PACKET_DISABLE: | |
6387 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6388 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6389 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6390 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6391 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6392 | break; |
6393 | case PACKET_ENABLE: | |
6394 | break; | |
6395 | } | |
6396 | } | |
6397 | ||
ad10f812 | 6398 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6399 | packet was not recognized. */ |
5a2468f5 JM |
6400 | |
6401 | static int | |
1f4437a4 MS |
6402 | store_register_using_P (const struct regcache *regcache, |
6403 | struct packet_reg *reg) | |
5a2468f5 | 6404 | { |
4a22f64d | 6405 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6406 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6407 | /* Try storing a single register. */ |
6d820c5c | 6408 | char *buf = rs->buf; |
cfd77fa1 | 6409 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6410 | char *p; |
5a2468f5 | 6411 | |
4082afcc | 6412 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6413 | return 0; |
6414 | ||
6415 | if (reg->pnum == -1) | |
6416 | return 0; | |
6417 | ||
ea9c271d | 6418 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6419 | p = buf + strlen (buf); |
56be3814 | 6420 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6421 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6422 | putpkt (rs->buf); |
6423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6424 | |
74ca34ce DJ |
6425 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6426 | { | |
6427 | case PACKET_OK: | |
6428 | return 1; | |
6429 | case PACKET_ERROR: | |
27a9c0bf MS |
6430 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6431 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6432 | case PACKET_UNKNOWN: |
6433 | return 0; | |
6434 | default: | |
6435 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6436 | } | |
c906108c SS |
6437 | } |
6438 | ||
23860348 MS |
6439 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6440 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6441 | |
6442 | static void | |
56be3814 | 6443 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6444 | { |
d01949b6 | 6445 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6446 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6447 | gdb_byte *regs; |
c906108c SS |
6448 | char *p; |
6449 | ||
193cb69f AC |
6450 | /* Extract all the registers in the regcache copying them into a |
6451 | local buffer. */ | |
6452 | { | |
b323314b | 6453 | int i; |
a744cf53 | 6454 | |
ea9c271d DJ |
6455 | regs = alloca (rsa->sizeof_g_packet); |
6456 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6457 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6458 | { |
ea9c271d | 6459 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6460 | |
b323314b | 6461 | if (r->in_g_packet) |
56be3814 | 6462 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6463 | } |
6464 | } | |
c906108c SS |
6465 | |
6466 | /* Command describes registers byte by byte, | |
6467 | each byte encoded as two hex characters. */ | |
6d820c5c | 6468 | p = rs->buf; |
193cb69f | 6469 | *p++ = 'G'; |
74ca34ce DJ |
6470 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6471 | updated. */ | |
6472 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6473 | putpkt (rs->buf); |
6474 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6475 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6476 | error (_("Could not write registers; remote failure reply '%s'"), |
6477 | rs->buf); | |
c906108c | 6478 | } |
74ca34ce DJ |
6479 | |
6480 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6481 | of the register cache buffer. FIXME: ignores errors. */ | |
6482 | ||
6483 | static void | |
28439f5e PA |
6484 | remote_store_registers (struct target_ops *ops, |
6485 | struct regcache *regcache, int regnum) | |
74ca34ce | 6486 | { |
74ca34ce DJ |
6487 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6488 | int i; | |
6489 | ||
e6e4e701 | 6490 | set_remote_traceframe (); |
79d7f229 | 6491 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6492 | |
6493 | if (regnum >= 0) | |
6494 | { | |
6495 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6496 | |
74ca34ce DJ |
6497 | gdb_assert (reg != NULL); |
6498 | ||
6499 | /* Always prefer to store registers using the 'P' packet if | |
6500 | possible; we often change only a small number of registers. | |
6501 | Sometimes we change a larger number; we'd need help from a | |
6502 | higher layer to know to use 'G'. */ | |
56be3814 | 6503 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6504 | return; |
6505 | ||
6506 | /* For now, don't complain if we have no way to write the | |
6507 | register. GDB loses track of unavailable registers too | |
6508 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6509 | any way to read the register, either... */ |
74ca34ce DJ |
6510 | if (!reg->in_g_packet) |
6511 | return; | |
6512 | ||
56be3814 | 6513 | store_registers_using_G (regcache); |
74ca34ce DJ |
6514 | return; |
6515 | } | |
6516 | ||
56be3814 | 6517 | store_registers_using_G (regcache); |
74ca34ce | 6518 | |
4a22f64d | 6519 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6520 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6521 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6522 | /* See above for why we do not issue an error here. */ |
6523 | continue; | |
6524 | } | |
c906108c SS |
6525 | \f |
6526 | ||
6527 | /* Return the number of hex digits in num. */ | |
6528 | ||
6529 | static int | |
fba45db2 | 6530 | hexnumlen (ULONGEST num) |
c906108c SS |
6531 | { |
6532 | int i; | |
6533 | ||
6534 | for (i = 0; num != 0; i++) | |
6535 | num >>= 4; | |
6536 | ||
6537 | return max (i, 1); | |
6538 | } | |
6539 | ||
2df3850c | 6540 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6541 | |
6542 | static int | |
fba45db2 | 6543 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6544 | { |
c906108c | 6545 | int len = hexnumlen (num); |
a744cf53 | 6546 | |
2df3850c JM |
6547 | return hexnumnstr (buf, num, len); |
6548 | } | |
6549 | ||
c906108c | 6550 | |
2df3850c | 6551 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6552 | |
2df3850c | 6553 | static int |
fba45db2 | 6554 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6555 | { |
6556 | int i; | |
6557 | ||
6558 | buf[width] = '\0'; | |
6559 | ||
6560 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6561 | { |
c5aa993b | 6562 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6563 | num >>= 4; |
6564 | } | |
6565 | ||
2df3850c | 6566 | return width; |
c906108c SS |
6567 | } |
6568 | ||
23860348 | 6569 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6570 | |
6571 | static CORE_ADDR | |
fba45db2 | 6572 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6573 | { |
883b9c6c | 6574 | unsigned int address_size = remote_address_size; |
a744cf53 | 6575 | |
911c95a5 UW |
6576 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6577 | if (!address_size) | |
f5656ead | 6578 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6579 | |
6580 | if (address_size > 0 | |
6581 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6582 | { |
6583 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6584 | in a ULONGEST variable. */ |
c906108c | 6585 | ULONGEST mask = 1; |
a744cf53 | 6586 | |
911c95a5 | 6587 | mask = (mask << address_size) - 1; |
c906108c SS |
6588 | addr &= mask; |
6589 | } | |
6590 | return addr; | |
6591 | } | |
6592 | ||
6593 | /* Determine whether the remote target supports binary downloading. | |
6594 | This is accomplished by sending a no-op memory write of zero length | |
6595 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6596 | the whole packet, since many stubs strip the eighth bit and |
6597 | subsequently compute a wrong checksum, which causes real havoc with | |
6598 | remote_write_bytes. | |
7a292a7a | 6599 | |
96baa820 | 6600 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6601 | clean. In cases like this, the user should clear "remote |
23860348 | 6602 | X-packet". */ |
96baa820 | 6603 | |
c906108c | 6604 | static void |
fba45db2 | 6605 | check_binary_download (CORE_ADDR addr) |
c906108c | 6606 | { |
d01949b6 | 6607 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6608 | |
4082afcc | 6609 | switch (packet_support (PACKET_X)) |
c906108c | 6610 | { |
96baa820 JM |
6611 | case PACKET_DISABLE: |
6612 | break; | |
6613 | case PACKET_ENABLE: | |
6614 | break; | |
6615 | case PACKET_SUPPORT_UNKNOWN: | |
6616 | { | |
96baa820 | 6617 | char *p; |
802188a7 | 6618 | |
2e9f7625 | 6619 | p = rs->buf; |
96baa820 JM |
6620 | *p++ = 'X'; |
6621 | p += hexnumstr (p, (ULONGEST) addr); | |
6622 | *p++ = ','; | |
6623 | p += hexnumstr (p, (ULONGEST) 0); | |
6624 | *p++ = ':'; | |
6625 | *p = '\0'; | |
802188a7 | 6626 | |
2e9f7625 | 6627 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6628 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6629 | |
2e9f7625 | 6630 | if (rs->buf[0] == '\0') |
96baa820 JM |
6631 | { |
6632 | if (remote_debug) | |
6633 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6634 | "binary downloading NOT " |
6635 | "supported by target\n"); | |
444abaca | 6636 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6637 | } |
6638 | else | |
6639 | { | |
6640 | if (remote_debug) | |
6641 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6642 | "binary downloading supported by target\n"); |
444abaca | 6643 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6644 | } |
6645 | break; | |
6646 | } | |
c906108c SS |
6647 | } |
6648 | } | |
6649 | ||
6650 | /* Write memory data directly to the remote machine. | |
6651 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6652 | HEADER is the starting part of the packet. |
c906108c SS |
6653 | MEMADDR is the address in the remote memory space. |
6654 | MYADDR is the address of the buffer in our space. | |
6655 | LEN is the number of bytes. | |
a76d924d DJ |
6656 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6657 | should send data as binary ('X'), or hex-encoded ('M'). | |
6658 | ||
6659 | The function creates packet of the form | |
6660 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6661 | ||
6662 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6663 | ||
6664 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6665 | are omitted. | |
6666 | ||
9b409511 YQ |
6667 | Return the transferred status, error or OK (an |
6668 | 'enum target_xfer_status' value). Save the number of bytes | |
6669 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
c906108c | 6670 | |
9b409511 | 6671 | static enum target_xfer_status |
a76d924d | 6672 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
5d6df423 | 6673 | const gdb_byte *myaddr, ULONGEST len, |
9b409511 YQ |
6674 | ULONGEST *xfered_len, char packet_format, |
6675 | int use_length) | |
c906108c | 6676 | { |
6d820c5c | 6677 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6678 | char *p; |
a76d924d DJ |
6679 | char *plen = NULL; |
6680 | int plenlen = 0; | |
917317f4 JM |
6681 | int todo; |
6682 | int nr_bytes; | |
a257b5bb | 6683 | int payload_size; |
6765f3e5 | 6684 | int payload_length; |
a76d924d DJ |
6685 | int header_length; |
6686 | ||
6687 | if (packet_format != 'X' && packet_format != 'M') | |
6688 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6689 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6690 | |
5d6df423 | 6691 | if (len == 0) |
9b409511 | 6692 | return TARGET_XFER_EOF; |
b2182ed2 | 6693 | |
3de11b2e | 6694 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6695 | |
6d820c5c DJ |
6696 | /* The packet buffer will be large enough for the payload; |
6697 | get_memory_packet_size ensures this. */ | |
a76d924d | 6698 | rs->buf[0] = '\0'; |
c906108c | 6699 | |
a257b5bb | 6700 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6701 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6702 | ||
a76d924d DJ |
6703 | payload_size -= strlen ("$,:#NN"); |
6704 | if (!use_length) | |
0df8b418 | 6705 | /* The comma won't be used. */ |
a76d924d DJ |
6706 | payload_size += 1; |
6707 | header_length = strlen (header); | |
6708 | payload_size -= header_length; | |
3de11b2e | 6709 | payload_size -= hexnumlen (memaddr); |
c906108c | 6710 | |
a76d924d | 6711 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6712 | |
a76d924d DJ |
6713 | strcat (rs->buf, header); |
6714 | p = rs->buf + strlen (header); | |
6715 | ||
6716 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6717 | if (packet_format == 'X') | |
c906108c | 6718 | { |
23860348 | 6719 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6720 | todo = min (len, payload_size); |
a76d924d DJ |
6721 | if (use_length) |
6722 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6723 | todo = min (todo, payload_size); |
a76d924d DJ |
6724 | } |
6725 | else | |
6726 | { | |
23860348 | 6727 | /* Num bytes that will fit. */ |
a257b5bb | 6728 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6729 | if (use_length) |
6730 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6731 | todo = min (todo, payload_size / 2); |
917317f4 | 6732 | } |
a76d924d | 6733 | |
3de11b2e NS |
6734 | if (todo <= 0) |
6735 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6736 | _("minimum packet size too small to write data")); |
802188a7 | 6737 | |
6765f3e5 DJ |
6738 | /* If we already need another packet, then try to align the end |
6739 | of this packet to a useful boundary. */ | |
6740 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6741 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6742 | ||
a257b5bb | 6743 | /* Append "<memaddr>". */ |
917317f4 JM |
6744 | memaddr = remote_address_masked (memaddr); |
6745 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6746 | |
a76d924d DJ |
6747 | if (use_length) |
6748 | { | |
6749 | /* Append ",". */ | |
6750 | *p++ = ','; | |
802188a7 | 6751 | |
a76d924d DJ |
6752 | /* Append <len>. Retain the location/size of <len>. It may need to |
6753 | be adjusted once the packet body has been created. */ | |
6754 | plen = p; | |
6755 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6756 | p += plenlen; | |
6757 | } | |
a257b5bb AC |
6758 | |
6759 | /* Append ":". */ | |
917317f4 JM |
6760 | *p++ = ':'; |
6761 | *p = '\0'; | |
802188a7 | 6762 | |
a257b5bb | 6763 | /* Append the packet body. */ |
a76d924d | 6764 | if (packet_format == 'X') |
917317f4 | 6765 | { |
917317f4 JM |
6766 | /* Binary mode. Send target system values byte by byte, in |
6767 | increasing byte addresses. Only escape certain critical | |
6768 | characters. */ | |
bc20a4af PA |
6769 | payload_length = remote_escape_output (myaddr, todo, (gdb_byte *) p, |
6770 | &nr_bytes, payload_size); | |
6765f3e5 DJ |
6771 | |
6772 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6773 | a second try to keep the end of the packet aligned. Don't do |
6774 | this if the packet is tiny. */ | |
6775 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6776 | { |
6777 | int new_nr_bytes; | |
6778 | ||
6779 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6780 | - memaddr); | |
6781 | if (new_nr_bytes != nr_bytes) | |
6782 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
bc20a4af | 6783 | (gdb_byte *) p, &nr_bytes, |
6765f3e5 DJ |
6784 | payload_size); |
6785 | } | |
6786 | ||
6787 | p += payload_length; | |
a76d924d | 6788 | if (use_length && nr_bytes < todo) |
c906108c | 6789 | { |
802188a7 | 6790 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6791 | and we have actually sent fewer bytes than planned. |
6792 | Fix-up the length field of the packet. Use the same | |
6793 | number of characters as before. */ | |
917317f4 JM |
6794 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6795 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6796 | } |
a76d924d DJ |
6797 | } |
6798 | else | |
6799 | { | |
917317f4 JM |
6800 | /* Normal mode: Send target system values byte by byte, in |
6801 | increasing byte addresses. Each byte is encoded as a two hex | |
6802 | value. */ | |
2644f393 | 6803 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6804 | p += 2 * nr_bytes; |
c906108c | 6805 | } |
802188a7 | 6806 | |
2e9f7625 | 6807 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6808 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6809 | |
2e9f7625 | 6810 | if (rs->buf[0] == 'E') |
00d84524 | 6811 | return TARGET_XFER_E_IO; |
802188a7 | 6812 | |
23860348 MS |
6813 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6814 | fewer bytes than we'd planned. */ | |
9b409511 YQ |
6815 | *xfered_len = (ULONGEST) nr_bytes; |
6816 | return TARGET_XFER_OK; | |
c906108c SS |
6817 | } |
6818 | ||
a76d924d DJ |
6819 | /* Write memory data directly to the remote machine. |
6820 | This does not inform the data cache; the data cache uses this. | |
6821 | MEMADDR is the address in the remote memory space. | |
6822 | MYADDR is the address of the buffer in our space. | |
6823 | LEN is the number of bytes. | |
6824 | ||
9b409511 YQ |
6825 | Return the transferred status, error or OK (an |
6826 | 'enum target_xfer_status' value). Save the number of bytes | |
6827 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 6828 | |
9b409511 YQ |
6829 | static enum target_xfer_status |
6830 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
6831 | ULONGEST *xfered_len) | |
a76d924d DJ |
6832 | { |
6833 | char *packet_format = 0; | |
6834 | ||
6835 | /* Check whether the target supports binary download. */ | |
6836 | check_binary_download (memaddr); | |
6837 | ||
4082afcc | 6838 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
6839 | { |
6840 | case PACKET_ENABLE: | |
6841 | packet_format = "X"; | |
6842 | break; | |
6843 | case PACKET_DISABLE: | |
6844 | packet_format = "M"; | |
6845 | break; | |
6846 | case PACKET_SUPPORT_UNKNOWN: | |
6847 | internal_error (__FILE__, __LINE__, | |
6848 | _("remote_write_bytes: bad internal state")); | |
6849 | default: | |
6850 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6851 | } | |
6852 | ||
6853 | return remote_write_bytes_aux (packet_format, | |
9b409511 YQ |
6854 | memaddr, myaddr, len, xfered_len, |
6855 | packet_format[0], 1); | |
a76d924d DJ |
6856 | } |
6857 | ||
9217e74e YQ |
6858 | /* Read memory data directly from the remote machine. |
6859 | This does not use the data cache; the data cache uses this. | |
6860 | MEMADDR is the address in the remote memory space. | |
6861 | MYADDR is the address of the buffer in our space. | |
6862 | LEN is the number of bytes. | |
6863 | ||
6864 | Return the transferred status, error or OK (an | |
6865 | 'enum target_xfer_status' value). Save the number of bytes | |
6866 | transferred in *XFERED_LEN. */ | |
6867 | ||
6868 | static enum target_xfer_status | |
6869 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len, | |
6870 | ULONGEST *xfered_len) | |
6871 | { | |
6872 | struct remote_state *rs = get_remote_state (); | |
6873 | int max_buf_size; /* Max size of packet output buffer. */ | |
6874 | char *p; | |
6875 | int todo; | |
6876 | int i; | |
6877 | ||
6878 | max_buf_size = get_memory_read_packet_size (); | |
6879 | /* The packet buffer will be large enough for the payload; | |
6880 | get_memory_packet_size ensures this. */ | |
6881 | ||
6882 | /* Number if bytes that will fit. */ | |
6883 | todo = min (len, max_buf_size / 2); | |
6884 | ||
6885 | /* Construct "m"<memaddr>","<len>". */ | |
6886 | memaddr = remote_address_masked (memaddr); | |
6887 | p = rs->buf; | |
6888 | *p++ = 'm'; | |
6889 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6890 | *p++ = ','; | |
6891 | p += hexnumstr (p, (ULONGEST) todo); | |
6892 | *p = '\0'; | |
6893 | putpkt (rs->buf); | |
6894 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6895 | if (rs->buf[0] == 'E' | |
6896 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6897 | && rs->buf[3] == '\0') | |
6898 | return TARGET_XFER_E_IO; | |
6899 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
6900 | characters. */ | |
6901 | p = rs->buf; | |
6902 | i = hex2bin (p, myaddr, todo); | |
6903 | /* Return what we have. Let higher layers handle partial reads. */ | |
6904 | *xfered_len = (ULONGEST) i; | |
6905 | return TARGET_XFER_OK; | |
6906 | } | |
6907 | ||
b55fbac4 YQ |
6908 | /* Using the set of read-only target sections of remote, read live |
6909 | read-only memory. | |
8acf9577 YQ |
6910 | |
6911 | For interface/parameters/return description see target.h, | |
6912 | to_xfer_partial. */ | |
6913 | ||
6914 | static enum target_xfer_status | |
b55fbac4 YQ |
6915 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
6916 | ULONGEST memaddr, ULONGEST len, | |
6917 | ULONGEST *xfered_len) | |
8acf9577 YQ |
6918 | { |
6919 | struct target_section *secp; | |
6920 | struct target_section_table *table; | |
6921 | ||
6922 | secp = target_section_by_addr (ops, memaddr); | |
6923 | if (secp != NULL | |
6924 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
6925 | secp->the_bfd_section) | |
6926 | & SEC_READONLY)) | |
6927 | { | |
6928 | struct target_section *p; | |
6929 | ULONGEST memend = memaddr + len; | |
6930 | ||
6931 | table = target_get_section_table (ops); | |
6932 | ||
6933 | for (p = table->sections; p < table->sections_end; p++) | |
6934 | { | |
6935 | if (memaddr >= p->addr) | |
6936 | { | |
6937 | if (memend <= p->endaddr) | |
6938 | { | |
6939 | /* Entire transfer is within this section. */ | |
b55fbac4 YQ |
6940 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6941 | xfered_len); | |
8acf9577 YQ |
6942 | } |
6943 | else if (memaddr >= p->endaddr) | |
6944 | { | |
6945 | /* This section ends before the transfer starts. */ | |
6946 | continue; | |
6947 | } | |
6948 | else | |
6949 | { | |
6950 | /* This section overlaps the transfer. Just do half. */ | |
6951 | len = p->endaddr - memaddr; | |
b55fbac4 YQ |
6952 | return remote_read_bytes_1 (memaddr, readbuf, len, |
6953 | xfered_len); | |
8acf9577 YQ |
6954 | } |
6955 | } | |
6956 | } | |
6957 | } | |
6958 | ||
6959 | return TARGET_XFER_EOF; | |
6960 | } | |
6961 | ||
9217e74e YQ |
6962 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
6963 | first if the requested memory is unavailable in traceframe. | |
6964 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 6965 | |
9b409511 | 6966 | static enum target_xfer_status |
8acf9577 YQ |
6967 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
6968 | gdb_byte *myaddr, ULONGEST len, ULONGEST *xfered_len) | |
c906108c | 6969 | { |
6b6aa828 | 6970 | if (len == 0) |
96c4f946 | 6971 | return TARGET_XFER_EOF; |
b2182ed2 | 6972 | |
8acf9577 YQ |
6973 | if (get_traceframe_number () != -1) |
6974 | { | |
6975 | VEC(mem_range_s) *available; | |
6976 | ||
6977 | /* If we fail to get the set of available memory, then the | |
6978 | target does not support querying traceframe info, and so we | |
6979 | attempt reading from the traceframe anyway (assuming the | |
6980 | target implements the old QTro packet then). */ | |
6981 | if (traceframe_available_memory (&available, memaddr, len)) | |
6982 | { | |
6983 | struct cleanup *old_chain; | |
6984 | ||
6985 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
6986 | ||
6987 | if (VEC_empty (mem_range_s, available) | |
6988 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
6989 | { | |
6990 | enum target_xfer_status res; | |
6991 | ||
6992 | /* Don't read into the traceframe's available | |
6993 | memory. */ | |
6994 | if (!VEC_empty (mem_range_s, available)) | |
6995 | { | |
6996 | LONGEST oldlen = len; | |
6997 | ||
6998 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
6999 | gdb_assert (len <= oldlen); | |
7000 | } | |
7001 | ||
7002 | do_cleanups (old_chain); | |
7003 | ||
7004 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7005 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
8acf9577 YQ |
7006 | len, xfered_len); |
7007 | if (res == TARGET_XFER_OK) | |
7008 | return TARGET_XFER_OK; | |
7009 | else | |
7010 | { | |
7011 | /* No use trying further, we know some memory starting | |
7012 | at MEMADDR isn't available. */ | |
7013 | *xfered_len = len; | |
7014 | return TARGET_XFER_UNAVAILABLE; | |
7015 | } | |
7016 | } | |
7017 | ||
7018 | /* Don't try to read more than how much is available, in | |
7019 | case the target implements the deprecated QTro packet to | |
7020 | cater for older GDBs (the target's knowledge of read-only | |
7021 | sections may be outdated by now). */ | |
7022 | len = VEC_index (mem_range_s, available, 0)->length; | |
7023 | ||
7024 | do_cleanups (old_chain); | |
7025 | } | |
7026 | } | |
7027 | ||
9217e74e | 7028 | return remote_read_bytes_1 (memaddr, myaddr, len, xfered_len); |
c906108c | 7029 | } |
74531fed | 7030 | |
c906108c | 7031 | \f |
c906108c | 7032 | |
a76d924d DJ |
7033 | /* Sends a packet with content determined by the printf format string |
7034 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7035 | whether the packet was a success, a failure, or unknown. */ | |
7036 | ||
77b64a49 PA |
7037 | static enum packet_result remote_send_printf (const char *format, ...) |
7038 | ATTRIBUTE_PRINTF (1, 2); | |
7039 | ||
2c0b251b | 7040 | static enum packet_result |
a76d924d DJ |
7041 | remote_send_printf (const char *format, ...) |
7042 | { | |
7043 | struct remote_state *rs = get_remote_state (); | |
7044 | int max_size = get_remote_packet_size (); | |
a76d924d | 7045 | va_list ap; |
a744cf53 | 7046 | |
a76d924d DJ |
7047 | va_start (ap, format); |
7048 | ||
7049 | rs->buf[0] = '\0'; | |
7050 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7051 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7052 | |
7053 | if (putpkt (rs->buf) < 0) | |
7054 | error (_("Communication problem with target.")); | |
7055 | ||
7056 | rs->buf[0] = '\0'; | |
7057 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7058 | ||
7059 | return packet_check_result (rs->buf); | |
7060 | } | |
7061 | ||
7062 | static void | |
7063 | restore_remote_timeout (void *p) | |
7064 | { | |
7065 | int value = *(int *)p; | |
a744cf53 | 7066 | |
a76d924d DJ |
7067 | remote_timeout = value; |
7068 | } | |
7069 | ||
7070 | /* Flash writing can take quite some time. We'll set | |
7071 | effectively infinite timeout for flash operations. | |
7072 | In future, we'll need to decide on a better approach. */ | |
7073 | static const int remote_flash_timeout = 1000; | |
7074 | ||
7075 | static void | |
7076 | remote_flash_erase (struct target_ops *ops, | |
7077 | ULONGEST address, LONGEST length) | |
7078 | { | |
f5656ead | 7079 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7080 | int saved_remote_timeout = remote_timeout; |
7081 | enum packet_result ret; | |
a76d924d DJ |
7082 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7083 | &saved_remote_timeout); | |
a744cf53 | 7084 | |
a76d924d DJ |
7085 | remote_timeout = remote_flash_timeout; |
7086 | ||
7087 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7088 | phex (address, addr_size), |
a76d924d DJ |
7089 | phex (length, 4)); |
7090 | switch (ret) | |
7091 | { | |
7092 | case PACKET_UNKNOWN: | |
7093 | error (_("Remote target does not support flash erase")); | |
7094 | case PACKET_ERROR: | |
7095 | error (_("Error erasing flash with vFlashErase packet")); | |
7096 | default: | |
7097 | break; | |
7098 | } | |
7099 | ||
7100 | do_cleanups (back_to); | |
7101 | } | |
7102 | ||
9b409511 YQ |
7103 | static enum target_xfer_status |
7104 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7105 | ULONGEST length, ULONGEST *xfered_len, | |
7106 | const gdb_byte *data) | |
a76d924d DJ |
7107 | { |
7108 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7109 | enum target_xfer_status ret; |
a76d924d | 7110 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7111 | &saved_remote_timeout); |
a76d924d DJ |
7112 | |
7113 | remote_timeout = remote_flash_timeout; | |
9b409511 YQ |
7114 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, |
7115 | xfered_len,'X', 0); | |
a76d924d DJ |
7116 | do_cleanups (back_to); |
7117 | ||
7118 | return ret; | |
7119 | } | |
7120 | ||
7121 | static void | |
7122 | remote_flash_done (struct target_ops *ops) | |
7123 | { | |
7124 | int saved_remote_timeout = remote_timeout; | |
7125 | int ret; | |
7126 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7127 | &saved_remote_timeout); | |
7128 | ||
7129 | remote_timeout = remote_flash_timeout; | |
7130 | ret = remote_send_printf ("vFlashDone"); | |
7131 | do_cleanups (back_to); | |
7132 | ||
7133 | switch (ret) | |
7134 | { | |
7135 | case PACKET_UNKNOWN: | |
7136 | error (_("Remote target does not support vFlashDone")); | |
7137 | case PACKET_ERROR: | |
7138 | error (_("Error finishing flash operation")); | |
7139 | default: | |
7140 | break; | |
7141 | } | |
7142 | } | |
7143 | ||
c906108c | 7144 | static void |
fba45db2 | 7145 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7146 | { |
7147 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7148 | } | |
7149 | \f | |
7150 | /* Stuff for dealing with the packets which are part of this protocol. | |
7151 | See comment at top of file for details. */ | |
7152 | ||
1927e618 PA |
7153 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7154 | error to higher layers. Called when a serial error is detected. | |
7155 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7156 | the system error message for errno at function entry and final dot |
7157 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7158 | |
7159 | static void | |
7160 | unpush_and_perror (const char *string) | |
7161 | { | |
d6cb50a2 | 7162 | int saved_errno = errno; |
1927e618 PA |
7163 | |
7164 | remote_unpush_target (); | |
d6cb50a2 JK |
7165 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7166 | safe_strerror (saved_errno)); | |
1927e618 PA |
7167 | } |
7168 | ||
0876f84a | 7169 | /* Read a single character from the remote end. */ |
c906108c SS |
7170 | |
7171 | static int | |
fba45db2 | 7172 | readchar (int timeout) |
c906108c SS |
7173 | { |
7174 | int ch; | |
5d93a237 | 7175 | struct remote_state *rs = get_remote_state (); |
c906108c | 7176 | |
5d93a237 | 7177 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7178 | |
2acceee2 | 7179 | if (ch >= 0) |
0876f84a | 7180 | return ch; |
2acceee2 JM |
7181 | |
7182 | switch ((enum serial_rc) ch) | |
c906108c SS |
7183 | { |
7184 | case SERIAL_EOF: | |
78a095c3 | 7185 | remote_unpush_target (); |
598d3636 | 7186 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7187 | /* no return */ |
c906108c | 7188 | case SERIAL_ERROR: |
1927e618 PA |
7189 | unpush_and_perror (_("Remote communication error. " |
7190 | "Target disconnected.")); | |
2acceee2 | 7191 | /* no return */ |
c906108c | 7192 | case SERIAL_TIMEOUT: |
2acceee2 | 7193 | break; |
c906108c | 7194 | } |
2acceee2 | 7195 | return ch; |
c906108c SS |
7196 | } |
7197 | ||
c33e31fd PA |
7198 | /* Wrapper for serial_write that closes the target and throws if |
7199 | writing fails. */ | |
7200 | ||
7201 | static void | |
7202 | remote_serial_write (const char *str, int len) | |
7203 | { | |
5d93a237 TT |
7204 | struct remote_state *rs = get_remote_state (); |
7205 | ||
7206 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7207 | { |
1927e618 PA |
7208 | unpush_and_perror (_("Remote communication error. " |
7209 | "Target disconnected.")); | |
c33e31fd PA |
7210 | } |
7211 | } | |
7212 | ||
6d820c5c DJ |
7213 | /* Send the command in *BUF to the remote machine, and read the reply |
7214 | into *BUF. Report an error if we get an error reply. Resize | |
7215 | *BUF using xrealloc if necessary to hold the result, and update | |
7216 | *SIZEOF_BUF. */ | |
c906108c SS |
7217 | |
7218 | static void | |
6d820c5c DJ |
7219 | remote_send (char **buf, |
7220 | long *sizeof_buf) | |
c906108c | 7221 | { |
6d820c5c | 7222 | putpkt (*buf); |
c2d11a7d | 7223 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7224 | |
6d820c5c DJ |
7225 | if ((*buf)[0] == 'E') |
7226 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7227 | } |
7228 | ||
6e5abd65 PA |
7229 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7230 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7231 | etc. The caller is responsible for releasing the returned | |
7232 | memory. */ | |
7233 | ||
7234 | static char * | |
7235 | escape_buffer (const char *buf, int n) | |
7236 | { | |
7237 | struct cleanup *old_chain; | |
7238 | struct ui_file *stb; | |
7239 | char *str; | |
6e5abd65 PA |
7240 | |
7241 | stb = mem_fileopen (); | |
7242 | old_chain = make_cleanup_ui_file_delete (stb); | |
7243 | ||
6ef284bd | 7244 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7245 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7246 | do_cleanups (old_chain); |
7247 | return str; | |
7248 | } | |
7249 | ||
c906108c SS |
7250 | /* Display a null-terminated packet on stdout, for debugging, using C |
7251 | string notation. */ | |
7252 | ||
7253 | static void | |
baa336ce | 7254 | print_packet (const char *buf) |
c906108c SS |
7255 | { |
7256 | puts_filtered ("\""); | |
43e526b9 | 7257 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7258 | puts_filtered ("\""); |
7259 | } | |
7260 | ||
7261 | int | |
baa336ce | 7262 | putpkt (const char *buf) |
c906108c SS |
7263 | { |
7264 | return putpkt_binary (buf, strlen (buf)); | |
7265 | } | |
7266 | ||
7267 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7268 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7269 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7270 | and for a possible /0 if we are debugging (remote_debug) and want |
7271 | to print the sent packet as a string. */ | |
c906108c SS |
7272 | |
7273 | static int | |
baa336ce | 7274 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7275 | { |
2d717e4f | 7276 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7277 | int i; |
7278 | unsigned char csum = 0; | |
11cf8741 | 7279 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7280 | |
c906108c SS |
7281 | int ch; |
7282 | int tcount = 0; | |
7283 | char *p; | |
dd61ec5c | 7284 | char *message; |
c906108c | 7285 | |
e24a49d8 PA |
7286 | /* Catch cases like trying to read memory or listing threads while |
7287 | we're waiting for a stop reply. The remote server wouldn't be | |
7288 | ready to handle this request, so we'd hang and timeout. We don't | |
7289 | have to worry about this in synchronous mode, because in that | |
7290 | case it's not possible to issue a command while the target is | |
74531fed PA |
7291 | running. This is not a problem in non-stop mode, because in that |
7292 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7293 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7294 | { |
7295 | error (_("Cannot execute this command while the target is running.\n" | |
7296 | "Use the \"interrupt\" command to stop the target\n" | |
7297 | "and then try again.")); | |
7298 | } | |
e24a49d8 | 7299 | |
2d717e4f DJ |
7300 | /* We're sending out a new packet. Make sure we don't look at a |
7301 | stale cached response. */ | |
7302 | rs->cached_wait_status = 0; | |
7303 | ||
c906108c SS |
7304 | /* Copy the packet into buffer BUF2, encapsulating it |
7305 | and giving it a checksum. */ | |
7306 | ||
c906108c SS |
7307 | p = buf2; |
7308 | *p++ = '$'; | |
7309 | ||
7310 | for (i = 0; i < cnt; i++) | |
7311 | { | |
7312 | csum += buf[i]; | |
7313 | *p++ = buf[i]; | |
7314 | } | |
7315 | *p++ = '#'; | |
7316 | *p++ = tohex ((csum >> 4) & 0xf); | |
7317 | *p++ = tohex (csum & 0xf); | |
7318 | ||
7319 | /* Send it over and over until we get a positive ack. */ | |
7320 | ||
7321 | while (1) | |
7322 | { | |
7323 | int started_error_output = 0; | |
7324 | ||
7325 | if (remote_debug) | |
7326 | { | |
6e5abd65 PA |
7327 | struct cleanup *old_chain; |
7328 | char *str; | |
7329 | ||
c906108c | 7330 | *p = '\0'; |
6e5abd65 PA |
7331 | str = escape_buffer (buf2, p - buf2); |
7332 | old_chain = make_cleanup (xfree, str); | |
7333 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7334 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7335 | do_cleanups (old_chain); |
c906108c | 7336 | } |
c33e31fd | 7337 | remote_serial_write (buf2, p - buf2); |
c906108c | 7338 | |
a6f3e723 SL |
7339 | /* If this is a no acks version of the remote protocol, send the |
7340 | packet and move on. */ | |
7341 | if (rs->noack_mode) | |
7342 | break; | |
7343 | ||
74531fed PA |
7344 | /* Read until either a timeout occurs (-2) or '+' is read. |
7345 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7346 | while (1) |
7347 | { | |
7348 | ch = readchar (remote_timeout); | |
7349 | ||
c5aa993b | 7350 | if (remote_debug) |
c906108c SS |
7351 | { |
7352 | switch (ch) | |
7353 | { | |
7354 | case '+': | |
1216fa2c | 7355 | case '-': |
c906108c SS |
7356 | case SERIAL_TIMEOUT: |
7357 | case '$': | |
74531fed | 7358 | case '%': |
c906108c SS |
7359 | if (started_error_output) |
7360 | { | |
7361 | putchar_unfiltered ('\n'); | |
7362 | started_error_output = 0; | |
7363 | } | |
7364 | } | |
7365 | } | |
7366 | ||
7367 | switch (ch) | |
7368 | { | |
7369 | case '+': | |
7370 | if (remote_debug) | |
0f71a2f6 | 7371 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7372 | return 1; |
1216fa2c AC |
7373 | case '-': |
7374 | if (remote_debug) | |
7375 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7376 | /* FALLTHROUGH */ |
c906108c | 7377 | case SERIAL_TIMEOUT: |
c5aa993b | 7378 | tcount++; |
c906108c SS |
7379 | if (tcount > 3) |
7380 | return 0; | |
23860348 | 7381 | break; /* Retransmit buffer. */ |
c906108c SS |
7382 | case '$': |
7383 | { | |
40e3f985 | 7384 | if (remote_debug) |
2bc416ba | 7385 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7386 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7387 | /* It's probably an old response sent because an ACK |
7388 | was lost. Gobble up the packet and ack it so it | |
7389 | doesn't get retransmitted when we resend this | |
7390 | packet. */ | |
6d820c5c | 7391 | skip_frame (); |
c33e31fd | 7392 | remote_serial_write ("+", 1); |
23860348 | 7393 | continue; /* Now, go look for +. */ |
c906108c | 7394 | } |
74531fed PA |
7395 | |
7396 | case '%': | |
7397 | { | |
7398 | int val; | |
7399 | ||
7400 | /* If we got a notification, handle it, and go back to looking | |
7401 | for an ack. */ | |
7402 | /* We've found the start of a notification. Now | |
7403 | collect the data. */ | |
7404 | val = read_frame (&rs->buf, &rs->buf_size); | |
7405 | if (val >= 0) | |
7406 | { | |
7407 | if (remote_debug) | |
7408 | { | |
6e5abd65 PA |
7409 | struct cleanup *old_chain; |
7410 | char *str; | |
7411 | ||
7412 | str = escape_buffer (rs->buf, val); | |
7413 | old_chain = make_cleanup (xfree, str); | |
7414 | fprintf_unfiltered (gdb_stdlog, | |
7415 | " Notification received: %s\n", | |
7416 | str); | |
7417 | do_cleanups (old_chain); | |
74531fed | 7418 | } |
5965e028 | 7419 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7420 | /* We're in sync now, rewait for the ack. */ |
7421 | tcount = 0; | |
7422 | } | |
7423 | else | |
7424 | { | |
7425 | if (remote_debug) | |
7426 | { | |
7427 | if (!started_error_output) | |
7428 | { | |
7429 | started_error_output = 1; | |
7430 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7431 | } | |
7432 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7433 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7434 | } | |
7435 | } | |
7436 | continue; | |
7437 | } | |
7438 | /* fall-through */ | |
c906108c SS |
7439 | default: |
7440 | if (remote_debug) | |
7441 | { | |
7442 | if (!started_error_output) | |
7443 | { | |
7444 | started_error_output = 1; | |
0f71a2f6 | 7445 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7446 | } |
0f71a2f6 | 7447 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7448 | } |
7449 | continue; | |
7450 | } | |
23860348 | 7451 | break; /* Here to retransmit. */ |
c906108c SS |
7452 | } |
7453 | ||
7454 | #if 0 | |
7455 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7456 | able to get out next time we call QUIT, without anything as |
7457 | violent as interrupt_query. If we want to provide a way out of | |
7458 | here without getting to the next QUIT, it should be based on | |
7459 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7460 | if (quit_flag) |
7461 | { | |
7462 | quit_flag = 0; | |
7463 | interrupt_query (); | |
7464 | } | |
7465 | #endif | |
7466 | } | |
a6f3e723 | 7467 | return 0; |
c906108c SS |
7468 | } |
7469 | ||
6d820c5c DJ |
7470 | /* Come here after finding the start of a frame when we expected an |
7471 | ack. Do our best to discard the rest of this packet. */ | |
7472 | ||
7473 | static void | |
7474 | skip_frame (void) | |
7475 | { | |
7476 | int c; | |
7477 | ||
7478 | while (1) | |
7479 | { | |
7480 | c = readchar (remote_timeout); | |
7481 | switch (c) | |
7482 | { | |
7483 | case SERIAL_TIMEOUT: | |
7484 | /* Nothing we can do. */ | |
7485 | return; | |
7486 | case '#': | |
7487 | /* Discard the two bytes of checksum and stop. */ | |
7488 | c = readchar (remote_timeout); | |
7489 | if (c >= 0) | |
7490 | c = readchar (remote_timeout); | |
7491 | ||
7492 | return; | |
7493 | case '*': /* Run length encoding. */ | |
7494 | /* Discard the repeat count. */ | |
7495 | c = readchar (remote_timeout); | |
7496 | if (c < 0) | |
7497 | return; | |
7498 | break; | |
7499 | default: | |
7500 | /* A regular character. */ | |
7501 | break; | |
7502 | } | |
7503 | } | |
7504 | } | |
7505 | ||
c906108c | 7506 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7507 | into *BUF, verifying the checksum, length, and handling run-length |
7508 | compression. NUL terminate the buffer. If there is not enough room, | |
7509 | expand *BUF using xrealloc. | |
c906108c | 7510 | |
c2d11a7d JM |
7511 | Returns -1 on error, number of characters in buffer (ignoring the |
7512 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7513 | SERIAL status indications). */ |
c2d11a7d JM |
7514 | |
7515 | static long | |
6d820c5c DJ |
7516 | read_frame (char **buf_p, |
7517 | long *sizeof_buf) | |
c906108c SS |
7518 | { |
7519 | unsigned char csum; | |
c2d11a7d | 7520 | long bc; |
c906108c | 7521 | int c; |
6d820c5c | 7522 | char *buf = *buf_p; |
a6f3e723 | 7523 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7524 | |
7525 | csum = 0; | |
c2d11a7d | 7526 | bc = 0; |
c906108c SS |
7527 | |
7528 | while (1) | |
7529 | { | |
7530 | c = readchar (remote_timeout); | |
c906108c SS |
7531 | switch (c) |
7532 | { | |
7533 | case SERIAL_TIMEOUT: | |
7534 | if (remote_debug) | |
0f71a2f6 | 7535 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7536 | return -1; |
c906108c SS |
7537 | case '$': |
7538 | if (remote_debug) | |
0f71a2f6 JM |
7539 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7540 | gdb_stdlog); | |
23860348 | 7541 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7542 | case '#': |
7543 | { | |
7544 | unsigned char pktcsum; | |
e1b09194 AC |
7545 | int check_0 = 0; |
7546 | int check_1 = 0; | |
c906108c | 7547 | |
c2d11a7d | 7548 | buf[bc] = '\0'; |
c906108c | 7549 | |
e1b09194 AC |
7550 | check_0 = readchar (remote_timeout); |
7551 | if (check_0 >= 0) | |
7552 | check_1 = readchar (remote_timeout); | |
802188a7 | 7553 | |
e1b09194 AC |
7554 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7555 | { | |
7556 | if (remote_debug) | |
2bc416ba | 7557 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7558 | gdb_stdlog); |
e1b09194 AC |
7559 | return -1; |
7560 | } | |
7561 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7562 | { |
7563 | if (remote_debug) | |
2bc416ba | 7564 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7565 | gdb_stdlog); |
40e3f985 FN |
7566 | return -1; |
7567 | } | |
c906108c | 7568 | |
a6f3e723 SL |
7569 | /* Don't recompute the checksum; with no ack packets we |
7570 | don't have any way to indicate a packet retransmission | |
7571 | is necessary. */ | |
7572 | if (rs->noack_mode) | |
7573 | return bc; | |
7574 | ||
e1b09194 | 7575 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7576 | if (csum == pktcsum) |
c2d11a7d | 7577 | return bc; |
c906108c | 7578 | |
c5aa993b | 7579 | if (remote_debug) |
c906108c | 7580 | { |
6e5abd65 PA |
7581 | struct cleanup *old_chain; |
7582 | char *str; | |
7583 | ||
7584 | str = escape_buffer (buf, bc); | |
7585 | old_chain = make_cleanup (xfree, str); | |
7586 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7587 | "Bad checksum, sentsum=0x%x, " |
7588 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7589 | pktcsum, csum, str); |
7590 | do_cleanups (old_chain); | |
c906108c | 7591 | } |
c2d11a7d | 7592 | /* Number of characters in buffer ignoring trailing |
23860348 | 7593 | NULL. */ |
c2d11a7d | 7594 | return -1; |
c906108c | 7595 | } |
23860348 | 7596 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7597 | { |
7598 | int repeat; | |
c906108c | 7599 | |
a744cf53 | 7600 | csum += c; |
b4501125 AC |
7601 | c = readchar (remote_timeout); |
7602 | csum += c; | |
23860348 | 7603 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7604 | |
23860348 | 7605 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7606 | |
6d820c5c | 7607 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7608 | { |
6d820c5c DJ |
7609 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7610 | { | |
7611 | /* Make some more room in the buffer. */ | |
7612 | *sizeof_buf += repeat; | |
7613 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7614 | buf = *buf_p; | |
7615 | } | |
7616 | ||
c2d11a7d JM |
7617 | memset (&buf[bc], buf[bc - 1], repeat); |
7618 | bc += repeat; | |
c2c6d25f JM |
7619 | continue; |
7620 | } | |
7621 | ||
c2d11a7d | 7622 | buf[bc] = '\0'; |
6d820c5c | 7623 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7624 | return -1; |
c2c6d25f | 7625 | } |
c906108c | 7626 | default: |
6d820c5c | 7627 | if (bc >= *sizeof_buf - 1) |
c906108c | 7628 | { |
6d820c5c DJ |
7629 | /* Make some more room in the buffer. */ |
7630 | *sizeof_buf *= 2; | |
7631 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7632 | buf = *buf_p; | |
c906108c SS |
7633 | } |
7634 | ||
6d820c5c DJ |
7635 | buf[bc++] = c; |
7636 | csum += c; | |
7637 | continue; | |
c906108c SS |
7638 | } |
7639 | } | |
7640 | } | |
7641 | ||
7642 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7643 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7644 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7645 | rather than timing out; this is used (in synchronous mode) to wait | |
7646 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7647 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7648 | don't have to change all the calls to getpkt to deal with the | |
7649 | return value, because at the moment I don't know what the right | |
23860348 | 7650 | thing to do it for those. */ |
c906108c | 7651 | void |
6d820c5c DJ |
7652 | getpkt (char **buf, |
7653 | long *sizeof_buf, | |
c2d11a7d | 7654 | int forever) |
d9fcf2fb JM |
7655 | { |
7656 | int timed_out; | |
7657 | ||
7658 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7659 | } | |
7660 | ||
7661 | ||
7662 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7663 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7664 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7665 | rather than timing out; this is used (in synchronous mode) to wait | |
7666 | for a target that is is executing user code to stop. If FOREVER == | |
7667 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7668 | indication of this to the caller. Otherwise return the number of |
7669 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7670 | enough reason to return to the caller. *IS_NOTIF is an output |
7671 | boolean that indicates whether *BUF holds a notification or not | |
7672 | (a regular packet). */ | |
74531fed | 7673 | |
3172dc30 | 7674 | static int |
74531fed | 7675 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7676 | int expecting_notif, int *is_notif) |
c906108c | 7677 | { |
2d717e4f | 7678 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7679 | int c; |
7680 | int tries; | |
7681 | int timeout; | |
df4b58fe | 7682 | int val = -1; |
c906108c | 7683 | |
2d717e4f DJ |
7684 | /* We're reading a new response. Make sure we don't look at a |
7685 | previously cached response. */ | |
7686 | rs->cached_wait_status = 0; | |
7687 | ||
6d820c5c | 7688 | strcpy (*buf, "timeout"); |
c906108c SS |
7689 | |
7690 | if (forever) | |
74531fed PA |
7691 | timeout = watchdog > 0 ? watchdog : -1; |
7692 | else if (expecting_notif) | |
7693 | timeout = 0; /* There should already be a char in the buffer. If | |
7694 | not, bail out. */ | |
c906108c SS |
7695 | else |
7696 | timeout = remote_timeout; | |
7697 | ||
7698 | #define MAX_TRIES 3 | |
7699 | ||
74531fed PA |
7700 | /* Process any number of notifications, and then return when |
7701 | we get a packet. */ | |
7702 | for (;;) | |
c906108c | 7703 | { |
d9c43928 | 7704 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
7705 | times. */ |
7706 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7707 | { |
74531fed PA |
7708 | /* This can loop forever if the remote side sends us |
7709 | characters continuously, but if it pauses, we'll get | |
7710 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7711 | we'll count that as a retry. | |
7712 | ||
7713 | Note that even when forever is set, we will only wait | |
7714 | forever prior to the start of a packet. After that, we | |
7715 | expect characters to arrive at a brisk pace. They should | |
7716 | show up within remote_timeout intervals. */ | |
7717 | do | |
7718 | c = readchar (timeout); | |
7719 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7720 | |
7721 | if (c == SERIAL_TIMEOUT) | |
7722 | { | |
74531fed PA |
7723 | if (expecting_notif) |
7724 | return -1; /* Don't complain, it's normal to not get | |
7725 | anything in this case. */ | |
7726 | ||
23860348 | 7727 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7728 | { |
2acceee2 | 7729 | QUIT; |
78a095c3 | 7730 | remote_unpush_target (); |
598d3636 JK |
7731 | throw_error (TARGET_CLOSE_ERROR, |
7732 | _("Watchdog timeout has expired. " | |
7733 | "Target detached.")); | |
c906108c | 7734 | } |
c906108c | 7735 | if (remote_debug) |
0f71a2f6 | 7736 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7737 | } |
74531fed PA |
7738 | else |
7739 | { | |
7740 | /* We've found the start of a packet or notification. | |
7741 | Now collect the data. */ | |
7742 | val = read_frame (buf, sizeof_buf); | |
7743 | if (val >= 0) | |
7744 | break; | |
7745 | } | |
7746 | ||
c33e31fd | 7747 | remote_serial_write ("-", 1); |
c906108c | 7748 | } |
c906108c | 7749 | |
74531fed PA |
7750 | if (tries > MAX_TRIES) |
7751 | { | |
7752 | /* We have tried hard enough, and just can't receive the | |
7753 | packet/notification. Give up. */ | |
7754 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7755 | |
74531fed PA |
7756 | /* Skip the ack char if we're in no-ack mode. */ |
7757 | if (!rs->noack_mode) | |
c33e31fd | 7758 | remote_serial_write ("+", 1); |
74531fed PA |
7759 | return -1; |
7760 | } | |
c906108c | 7761 | |
74531fed PA |
7762 | /* If we got an ordinary packet, return that to our caller. */ |
7763 | if (c == '$') | |
c906108c SS |
7764 | { |
7765 | if (remote_debug) | |
43e526b9 | 7766 | { |
6e5abd65 PA |
7767 | struct cleanup *old_chain; |
7768 | char *str; | |
7769 | ||
7770 | str = escape_buffer (*buf, val); | |
7771 | old_chain = make_cleanup (xfree, str); | |
7772 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7773 | do_cleanups (old_chain); | |
43e526b9 | 7774 | } |
a6f3e723 SL |
7775 | |
7776 | /* Skip the ack char if we're in no-ack mode. */ | |
7777 | if (!rs->noack_mode) | |
c33e31fd | 7778 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
7779 | if (is_notif != NULL) |
7780 | *is_notif = 0; | |
0876f84a | 7781 | return val; |
c906108c SS |
7782 | } |
7783 | ||
74531fed PA |
7784 | /* If we got a notification, handle it, and go back to looking |
7785 | for a packet. */ | |
7786 | else | |
7787 | { | |
7788 | gdb_assert (c == '%'); | |
7789 | ||
7790 | if (remote_debug) | |
7791 | { | |
6e5abd65 PA |
7792 | struct cleanup *old_chain; |
7793 | char *str; | |
7794 | ||
7795 | str = escape_buffer (*buf, val); | |
7796 | old_chain = make_cleanup (xfree, str); | |
7797 | fprintf_unfiltered (gdb_stdlog, | |
7798 | " Notification received: %s\n", | |
7799 | str); | |
7800 | do_cleanups (old_chain); | |
74531fed | 7801 | } |
fee9eda9 YQ |
7802 | if (is_notif != NULL) |
7803 | *is_notif = 1; | |
c906108c | 7804 | |
5965e028 | 7805 | handle_notification (rs->notif_state, *buf); |
c906108c | 7806 | |
74531fed | 7807 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7808 | |
74531fed | 7809 | if (expecting_notif) |
fee9eda9 | 7810 | return val; |
74531fed PA |
7811 | } |
7812 | } | |
7813 | } | |
7814 | ||
7815 | static int | |
7816 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7817 | { | |
fee9eda9 | 7818 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7819 | } |
7820 | ||
7821 | static int | |
fee9eda9 YQ |
7822 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7823 | int *is_notif) | |
74531fed | 7824 | { |
fee9eda9 YQ |
7825 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7826 | is_notif); | |
c906108c | 7827 | } |
74531fed | 7828 | |
c906108c SS |
7829 | \f |
7830 | static void | |
7d85a9c0 | 7831 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7832 | { |
0fdf84ca PA |
7833 | |
7834 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 7835 | aren't on speaking terms with the remote system. */ |
492d29ea | 7836 | TRY |
0fdf84ca PA |
7837 | { |
7838 | putpkt ("k"); | |
7839 | } | |
492d29ea | 7840 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
7841 | { |
7842 | if (ex.error == TARGET_CLOSE_ERROR) | |
7843 | { | |
7844 | /* If we got an (EOF) error that caused the target | |
7845 | to go away, then we're done, that's what we wanted. | |
7846 | "k" is susceptible to cause a premature EOF, given | |
7847 | that the remote server isn't actually required to | |
7848 | reply to "k", and it can happen that it doesn't | |
7849 | even get to reply ACK to the "k". */ | |
7850 | return; | |
7851 | } | |
7852 | ||
7853 | /* Otherwise, something went wrong. We didn't actually kill | |
7854 | the target. Just propagate the exception, and let the | |
7855 | user or higher layers decide what to do. */ | |
7856 | throw_exception (ex); | |
7857 | } | |
492d29ea | 7858 | END_CATCH |
43ff13b4 | 7859 | |
0fdf84ca PA |
7860 | /* We've killed the remote end, we get to mourn it. Since this is |
7861 | target remote, single-process, mourning the inferior also | |
7862 | unpushes remote_ops. */ | |
43ff13b4 JM |
7863 | target_mourn_inferior (); |
7864 | } | |
7865 | ||
82f73884 PA |
7866 | static int |
7867 | remote_vkill (int pid, struct remote_state *rs) | |
7868 | { | |
4082afcc | 7869 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
7870 | return -1; |
7871 | ||
7872 | /* Tell the remote target to detach. */ | |
bba74b36 | 7873 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7874 | putpkt (rs->buf); |
7875 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7876 | ||
4082afcc PA |
7877 | switch (packet_ok (rs->buf, |
7878 | &remote_protocol_packets[PACKET_vKill])) | |
7879 | { | |
7880 | case PACKET_OK: | |
7881 | return 0; | |
7882 | case PACKET_ERROR: | |
7883 | return 1; | |
7884 | case PACKET_UNKNOWN: | |
7885 | return -1; | |
7886 | default: | |
7887 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
7888 | } | |
82f73884 PA |
7889 | } |
7890 | ||
7891 | static void | |
7d85a9c0 | 7892 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7893 | { |
7894 | int res; | |
7895 | int pid = ptid_get_pid (inferior_ptid); | |
7896 | struct remote_state *rs = get_remote_state (); | |
7897 | ||
7898 | res = remote_vkill (pid, rs); | |
901f9912 | 7899 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7900 | { |
7901 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7902 | to specify the pid. */ | |
7903 | ||
7904 | putpkt ("k"); | |
7905 | #if 0 | |
7906 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7907 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7908 | res = 1; | |
7909 | #else | |
7910 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7911 | we do or not. For the existing stubs, kill is a noop. */ | |
7912 | res = 0; | |
7913 | #endif | |
7914 | } | |
7915 | ||
7916 | if (res != 0) | |
7917 | error (_("Can't kill process")); | |
7918 | ||
82f73884 PA |
7919 | target_mourn_inferior (); |
7920 | } | |
7921 | ||
c906108c | 7922 | static void |
136d6dae | 7923 | remote_mourn (struct target_ops *ops) |
c906108c | 7924 | { |
136d6dae | 7925 | remote_mourn_1 (ops); |
c906108c SS |
7926 | } |
7927 | ||
c906108c SS |
7928 | /* Worker function for remote_mourn. */ |
7929 | static void | |
fba45db2 | 7930 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7931 | { |
7932 | unpush_target (target); | |
ce5ce7ed | 7933 | |
8a2492ee PA |
7934 | /* remote_close takes care of doing most of the clean up. */ |
7935 | generic_mourn_inferior (); | |
c906108c SS |
7936 | } |
7937 | ||
2d717e4f DJ |
7938 | static void |
7939 | extended_remote_mourn_1 (struct target_ops *target) | |
7940 | { | |
7941 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7942 | |
e24a49d8 PA |
7943 | /* In case we got here due to an error, but we're going to stay |
7944 | connected. */ | |
7945 | rs->waiting_for_stop_reply = 0; | |
7946 | ||
dc1981d7 PA |
7947 | /* If the current general thread belonged to the process we just |
7948 | detached from or has exited, the remote side current general | |
7949 | thread becomes undefined. Considering a case like this: | |
7950 | ||
7951 | - We just got here due to a detach. | |
7952 | - The process that we're detaching from happens to immediately | |
7953 | report a global breakpoint being hit in non-stop mode, in the | |
7954 | same thread we had selected before. | |
7955 | - GDB attaches to this process again. | |
7956 | - This event happens to be the next event we handle. | |
7957 | ||
7958 | GDB would consider that the current general thread didn't need to | |
7959 | be set on the stub side (with Hg), since for all it knew, | |
7960 | GENERAL_THREAD hadn't changed. | |
7961 | ||
7962 | Notice that although in all-stop mode, the remote server always | |
7963 | sets the current thread to the thread reporting the stop event, | |
7964 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7965 | not* change the current thread when reporting a breakpoint hit, | |
7966 | due to the decoupling of event reporting and event handling. | |
7967 | ||
7968 | To keep things simple, we always invalidate our notion of the | |
7969 | current thread. */ | |
47f8a51d | 7970 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 7971 | |
2d717e4f DJ |
7972 | /* Unlike "target remote", we do not want to unpush the target; then |
7973 | the next time the user says "run", we won't be connected. */ | |
7974 | ||
48aa3c27 PA |
7975 | /* Call common code to mark the inferior as not running. */ |
7976 | generic_mourn_inferior (); | |
7977 | ||
d729566a | 7978 | if (!have_inferiors ()) |
2d717e4f | 7979 | { |
82f73884 PA |
7980 | if (!remote_multi_process_p (rs)) |
7981 | { | |
7982 | /* Check whether the target is running now - some remote stubs | |
7983 | automatically restart after kill. */ | |
7984 | putpkt ("?"); | |
7985 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7986 | ||
7987 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7988 | { | |
3e43a32a MS |
7989 | /* Assume that the target has been restarted. Set |
7990 | inferior_ptid so that bits of core GDB realizes | |
7991 | there's something here, e.g., so that the user can | |
7992 | say "kill" again. */ | |
82f73884 PA |
7993 | inferior_ptid = magic_null_ptid; |
7994 | } | |
82f73884 | 7995 | } |
2d717e4f DJ |
7996 | } |
7997 | } | |
c906108c SS |
7998 | |
7999 | static void | |
136d6dae | 8000 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 8001 | { |
136d6dae | 8002 | extended_remote_mourn_1 (ops); |
2d717e4f | 8003 | } |
c906108c | 8004 | |
03583c20 | 8005 | static int |
2bfc0540 | 8006 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8007 | { |
4082afcc | 8008 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8009 | } |
8010 | ||
8011 | static void | |
8012 | extended_remote_disable_randomization (int val) | |
8013 | { | |
8014 | struct remote_state *rs = get_remote_state (); | |
8015 | char *reply; | |
8016 | ||
bba74b36 YQ |
8017 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8018 | val); | |
03583c20 UW |
8019 | putpkt (rs->buf); |
8020 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8021 | if (*reply == '\0') | |
8022 | error (_("Target does not support QDisableRandomization.")); | |
8023 | if (strcmp (reply, "OK") != 0) | |
8024 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8025 | } | |
8026 | ||
2d717e4f DJ |
8027 | static int |
8028 | extended_remote_run (char *args) | |
8029 | { | |
8030 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8031 | int len; |
c906108c | 8032 | |
2d717e4f DJ |
8033 | /* If the user has disabled vRun support, or we have detected that |
8034 | support is not available, do not try it. */ | |
4082afcc | 8035 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8036 | return -1; |
424163ea | 8037 | |
2d717e4f DJ |
8038 | strcpy (rs->buf, "vRun;"); |
8039 | len = strlen (rs->buf); | |
c906108c | 8040 | |
2d717e4f DJ |
8041 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8042 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8043 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8044 | strlen (remote_exec_file)); | |
2d717e4f | 8045 | |
d1a41061 | 8046 | gdb_assert (args != NULL); |
2d717e4f DJ |
8047 | if (*args) |
8048 | { | |
8049 | struct cleanup *back_to; | |
8050 | int i; | |
8051 | char **argv; | |
8052 | ||
d1a41061 | 8053 | argv = gdb_buildargv (args); |
6e366df1 | 8054 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8055 | for (i = 0; argv[i] != NULL; i++) |
8056 | { | |
8057 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8058 | error (_("Argument list too long for run packet")); | |
8059 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8060 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8061 | strlen (argv[i])); | |
2d717e4f DJ |
8062 | } |
8063 | do_cleanups (back_to); | |
8064 | } | |
8065 | ||
8066 | rs->buf[len++] = '\0'; | |
8067 | ||
8068 | putpkt (rs->buf); | |
8069 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8070 | ||
4082afcc | 8071 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8072 | { |
4082afcc | 8073 | case PACKET_OK: |
3405876a | 8074 | /* We have a wait response. All is well. */ |
2d717e4f | 8075 | return 0; |
4082afcc PA |
8076 | case PACKET_UNKNOWN: |
8077 | return -1; | |
8078 | case PACKET_ERROR: | |
2d717e4f DJ |
8079 | if (remote_exec_file[0] == '\0') |
8080 | error (_("Running the default executable on the remote target failed; " | |
8081 | "try \"set remote exec-file\"?")); | |
8082 | else | |
8083 | error (_("Running \"%s\" on the remote target failed"), | |
8084 | remote_exec_file); | |
4082afcc PA |
8085 | default: |
8086 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8087 | } |
c906108c SS |
8088 | } |
8089 | ||
2d717e4f DJ |
8090 | /* In the extended protocol we want to be able to do things like |
8091 | "run" and have them basically work as expected. So we need | |
8092 | a special create_inferior function. We support changing the | |
8093 | executable file and the command line arguments, but not the | |
8094 | environment. */ | |
8095 | ||
43ff13b4 | 8096 | static void |
77a19445 TT |
8097 | extended_remote_create_inferior (struct target_ops *ops, |
8098 | char *exec_file, char *args, | |
8099 | char **env, int from_tty) | |
43ff13b4 | 8100 | { |
3405876a PA |
8101 | int run_worked; |
8102 | char *stop_reply; | |
8103 | struct remote_state *rs = get_remote_state (); | |
8104 | ||
43ff13b4 | 8105 | /* If running asynchronously, register the target file descriptor |
23860348 | 8106 | with the event loop. */ |
75c99385 | 8107 | if (target_can_async_p ()) |
6a3753b3 | 8108 | target_async (1); |
43ff13b4 | 8109 | |
03583c20 | 8110 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8111 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8112 | extended_remote_disable_randomization (disable_randomization); |
8113 | ||
43ff13b4 | 8114 | /* Now restart the remote server. */ |
3405876a PA |
8115 | run_worked = extended_remote_run (args) != -1; |
8116 | if (!run_worked) | |
2d717e4f DJ |
8117 | { |
8118 | /* vRun was not supported. Fail if we need it to do what the | |
8119 | user requested. */ | |
8120 | if (remote_exec_file[0]) | |
8121 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8122 | if (args[0]) | |
8123 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8124 | |
2d717e4f DJ |
8125 | /* Fall back to "R". */ |
8126 | extended_remote_restart (); | |
8127 | } | |
424163ea | 8128 | |
6c95b8df PA |
8129 | if (!have_inferiors ()) |
8130 | { | |
8131 | /* Clean up from the last time we ran, before we mark the target | |
8132 | running again. This will mark breakpoints uninserted, and | |
8133 | get_offsets may insert breakpoints. */ | |
8134 | init_thread_list (); | |
8135 | init_wait_for_inferior (); | |
8136 | } | |
45280a52 | 8137 | |
3405876a PA |
8138 | /* vRun's success return is a stop reply. */ |
8139 | stop_reply = run_worked ? rs->buf : NULL; | |
8140 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8141 | |
2d717e4f DJ |
8142 | /* Get updated offsets, if the stub uses qOffsets. */ |
8143 | get_offsets (); | |
2d717e4f | 8144 | } |
c906108c | 8145 | \f |
c5aa993b | 8146 | |
b775012e LM |
8147 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8148 | the list of conditions (in agent expression bytecode format), if any, the | |
8149 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8150 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8151 | |
8152 | static int | |
8153 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8154 | struct bp_target_info *bp_tgt, char *buf, |
8155 | char *buf_end) | |
b775012e LM |
8156 | { |
8157 | struct agent_expr *aexpr = NULL; | |
8158 | int i, ix; | |
8159 | char *pkt; | |
8160 | char *buf_start = buf; | |
8161 | ||
8162 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8163 | return 0; | |
8164 | ||
8165 | buf += strlen (buf); | |
bba74b36 | 8166 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8167 | buf++; |
8168 | ||
8169 | /* Send conditions to the target and free the vector. */ | |
8170 | for (ix = 0; | |
8171 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8172 | ix++) | |
8173 | { | |
bba74b36 | 8174 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8175 | buf += strlen (buf); |
8176 | for (i = 0; i < aexpr->len; ++i) | |
8177 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8178 | *buf = '\0'; | |
8179 | } | |
b775012e LM |
8180 | return 0; |
8181 | } | |
8182 | ||
d3ce09f5 SS |
8183 | static void |
8184 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8185 | struct bp_target_info *bp_tgt, char *buf) | |
8186 | { | |
8187 | struct agent_expr *aexpr = NULL; | |
8188 | int i, ix; | |
8189 | ||
8190 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8191 | return; | |
8192 | ||
8193 | buf += strlen (buf); | |
8194 | ||
8195 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8196 | buf += strlen (buf); | |
8197 | ||
8198 | /* Concatenate all the agent expressions that are commands into the | |
8199 | cmds parameter. */ | |
8200 | for (ix = 0; | |
8201 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8202 | ix++) | |
8203 | { | |
8204 | sprintf (buf, "X%x,", aexpr->len); | |
8205 | buf += strlen (buf); | |
8206 | for (i = 0; i < aexpr->len; ++i) | |
8207 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8208 | *buf = '\0'; | |
8209 | } | |
d3ce09f5 SS |
8210 | } |
8211 | ||
8181d85f DJ |
8212 | /* Insert a breakpoint. On targets that have software breakpoint |
8213 | support, we ask the remote target to do the work; on targets | |
8214 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8215 | |
8216 | static int | |
3db08215 MM |
8217 | remote_insert_breakpoint (struct target_ops *ops, |
8218 | struct gdbarch *gdbarch, | |
a6d9a66e | 8219 | struct bp_target_info *bp_tgt) |
c906108c | 8220 | { |
d471ea57 AC |
8221 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8222 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8223 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8224 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8225 | |
4082afcc | 8226 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8227 | { |
0d5ed153 | 8228 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8229 | struct remote_state *rs; |
bba74b36 | 8230 | char *p, *endbuf; |
7c0f6dcc | 8231 | int bpsize; |
b775012e | 8232 | struct condition_list *cond = NULL; |
4fff2411 | 8233 | |
28439a30 PA |
8234 | /* Make sure the remote is pointing at the right process, if |
8235 | necessary. */ | |
8236 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8237 | set_general_process (); | |
8238 | ||
a1dcb23a | 8239 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8240 | |
8241 | rs = get_remote_state (); | |
8242 | p = rs->buf; | |
bba74b36 | 8243 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8244 | |
96baa820 JM |
8245 | *(p++) = 'Z'; |
8246 | *(p++) = '0'; | |
8247 | *(p++) = ','; | |
7c0f6dcc | 8248 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8249 | p += hexnumstr (p, addr); |
bba74b36 | 8250 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8251 | |
efcc2da7 | 8252 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8253 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8254 | |
78eff0ec | 8255 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8256 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8257 | ||
6d820c5c DJ |
8258 | putpkt (rs->buf); |
8259 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8260 | |
6d820c5c | 8261 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8262 | { |
d471ea57 AC |
8263 | case PACKET_ERROR: |
8264 | return -1; | |
8265 | case PACKET_OK: | |
7c0f6dcc JL |
8266 | bp_tgt->placed_address = addr; |
8267 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8268 | return 0; |
8269 | case PACKET_UNKNOWN: | |
8270 | break; | |
96baa820 JM |
8271 | } |
8272 | } | |
c906108c | 8273 | |
0000e5cc PA |
8274 | /* If this breakpoint has target-side commands but this stub doesn't |
8275 | support Z0 packets, throw error. */ | |
8276 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8277 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8278 | Target doesn't support breakpoints that have target side commands.")); | |
8279 | ||
3db08215 | 8280 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8281 | } |
8282 | ||
8283 | static int | |
3db08215 MM |
8284 | remote_remove_breakpoint (struct target_ops *ops, |
8285 | struct gdbarch *gdbarch, | |
a6d9a66e | 8286 | struct bp_target_info *bp_tgt) |
c906108c | 8287 | { |
8181d85f | 8288 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8289 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8290 | |
4082afcc | 8291 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8292 | { |
6d820c5c | 8293 | char *p = rs->buf; |
bba74b36 | 8294 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8295 | |
28439a30 PA |
8296 | /* Make sure the remote is pointing at the right process, if |
8297 | necessary. */ | |
8298 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8299 | set_general_process (); | |
8300 | ||
96baa820 JM |
8301 | *(p++) = 'z'; |
8302 | *(p++) = '0'; | |
8303 | *(p++) = ','; | |
8304 | ||
8181d85f DJ |
8305 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8306 | p += hexnumstr (p, addr); | |
bba74b36 | 8307 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8308 | |
6d820c5c DJ |
8309 | putpkt (rs->buf); |
8310 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8311 | |
6d820c5c | 8312 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8313 | } |
8314 | ||
3db08215 | 8315 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8316 | } |
8317 | ||
d471ea57 AC |
8318 | static int |
8319 | watchpoint_to_Z_packet (int type) | |
8320 | { | |
8321 | switch (type) | |
8322 | { | |
8323 | case hw_write: | |
bb858e6a | 8324 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8325 | break; |
8326 | case hw_read: | |
bb858e6a | 8327 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8328 | break; |
8329 | case hw_access: | |
bb858e6a | 8330 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8331 | break; |
8332 | default: | |
8e65ff28 | 8333 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8334 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8335 | } |
8336 | } | |
8337 | ||
3c3bea1c | 8338 | static int |
7bb99c53 TT |
8339 | remote_insert_watchpoint (struct target_ops *self, |
8340 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8341 | struct expression *cond) |
96baa820 | 8342 | { |
d01949b6 | 8343 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8344 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8345 | char *p; |
d471ea57 | 8346 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8347 | |
4082afcc | 8348 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8349 | return 1; |
802188a7 | 8350 | |
28439a30 PA |
8351 | /* Make sure the remote is pointing at the right process, if |
8352 | necessary. */ | |
8353 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8354 | set_general_process (); | |
8355 | ||
bba74b36 | 8356 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8357 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8358 | addr = remote_address_masked (addr); |
8359 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8360 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8361 | |
6d820c5c DJ |
8362 | putpkt (rs->buf); |
8363 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8364 | |
6d820c5c | 8365 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8366 | { |
8367 | case PACKET_ERROR: | |
d471ea57 | 8368 | return -1; |
85d721b8 PA |
8369 | case PACKET_UNKNOWN: |
8370 | return 1; | |
d471ea57 AC |
8371 | case PACKET_OK: |
8372 | return 0; | |
8373 | } | |
8e65ff28 | 8374 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8375 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8376 | } |
8377 | ||
283002cf MR |
8378 | static int |
8379 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8380 | CORE_ADDR start, int length) | |
8381 | { | |
8382 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8383 | ||
8384 | return diff < length; | |
8385 | } | |
8386 | ||
d471ea57 | 8387 | |
3c3bea1c | 8388 | static int |
11b5219a TT |
8389 | remote_remove_watchpoint (struct target_ops *self, |
8390 | CORE_ADDR addr, int len, int type, | |
0cf6dd15 | 8391 | struct expression *cond) |
96baa820 | 8392 | { |
d01949b6 | 8393 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8394 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8395 | char *p; |
d471ea57 AC |
8396 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8397 | ||
4082afcc | 8398 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8399 | return -1; |
802188a7 | 8400 | |
28439a30 PA |
8401 | /* Make sure the remote is pointing at the right process, if |
8402 | necessary. */ | |
8403 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8404 | set_general_process (); | |
8405 | ||
bba74b36 | 8406 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8407 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8408 | addr = remote_address_masked (addr); |
8409 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8410 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8411 | putpkt (rs->buf); |
8412 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8413 | |
6d820c5c | 8414 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8415 | { |
8416 | case PACKET_ERROR: | |
8417 | case PACKET_UNKNOWN: | |
8418 | return -1; | |
8419 | case PACKET_OK: | |
8420 | return 0; | |
8421 | } | |
8e65ff28 | 8422 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8423 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8424 | } |
8425 | ||
3c3bea1c | 8426 | |
501eef12 | 8427 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8428 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8429 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8430 | |
480a3f21 | 8431 | static int |
31568a15 TT |
8432 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8433 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8434 | { |
8435 | if (remote_hw_watchpoint_length_limit == 0) | |
8436 | return 0; | |
8437 | else if (remote_hw_watchpoint_length_limit < 0) | |
8438 | return 1; | |
8439 | else if (len <= remote_hw_watchpoint_length_limit) | |
8440 | return 1; | |
8441 | else | |
8442 | return 0; | |
8443 | } | |
8444 | ||
b9362cc7 | 8445 | static int |
5461485a TT |
8446 | remote_check_watch_resources (struct target_ops *self, |
8447 | int type, int cnt, int ot) | |
96baa820 | 8448 | { |
3c3bea1c GS |
8449 | if (type == bp_hardware_breakpoint) |
8450 | { | |
8451 | if (remote_hw_breakpoint_limit == 0) | |
8452 | return 0; | |
501eef12 AC |
8453 | else if (remote_hw_breakpoint_limit < 0) |
8454 | return 1; | |
3c3bea1c GS |
8455 | else if (cnt <= remote_hw_breakpoint_limit) |
8456 | return 1; | |
8457 | } | |
8458 | else | |
8459 | { | |
8460 | if (remote_hw_watchpoint_limit == 0) | |
8461 | return 0; | |
501eef12 AC |
8462 | else if (remote_hw_watchpoint_limit < 0) |
8463 | return 1; | |
3c3bea1c GS |
8464 | else if (ot) |
8465 | return -1; | |
8466 | else if (cnt <= remote_hw_watchpoint_limit) | |
8467 | return 1; | |
8468 | } | |
8469 | return -1; | |
8470 | } | |
8471 | ||
f7e6eed5 PA |
8472 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
8473 | ||
8474 | static int | |
8475 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8476 | { | |
8477 | struct remote_state *rs = get_remote_state (); | |
8478 | ||
8479 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
8480 | } | |
8481 | ||
8482 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
8483 | remote. */ | |
8484 | ||
8485 | static int | |
8486 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8487 | { | |
8488 | struct remote_state *rs = get_remote_state (); | |
8489 | ||
8490 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
8491 | } | |
8492 | ||
8493 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
8494 | ||
8495 | static int | |
8496 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8497 | { | |
8498 | struct remote_state *rs = get_remote_state (); | |
8499 | ||
8500 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
8501 | } | |
8502 | ||
8503 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
8504 | remote. */ | |
8505 | ||
8506 | static int | |
8507 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8508 | { | |
8509 | struct remote_state *rs = get_remote_state (); | |
8510 | ||
8511 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
8512 | } | |
8513 | ||
b9362cc7 | 8514 | static int |
6a109b6b | 8515 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8516 | { |
ee154bee TT |
8517 | struct remote_state *rs = get_remote_state (); |
8518 | ||
f7e6eed5 | 8519 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
8520 | } |
8521 | ||
4aa7a7f5 JJ |
8522 | static int |
8523 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8524 | { |
ee154bee | 8525 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8526 | int rc = 0; |
a744cf53 | 8527 | |
6a109b6b | 8528 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8529 | { |
ee154bee | 8530 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8531 | rc = 1; |
8532 | } | |
8533 | ||
8534 | return rc; | |
3c3bea1c GS |
8535 | } |
8536 | ||
8537 | ||
8538 | static int | |
23a26771 | 8539 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8540 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8541 | { |
0d5ed153 | 8542 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8543 | struct remote_state *rs; |
bba74b36 | 8544 | char *p, *endbuf; |
dd61ec5c | 8545 | char *message; |
0d5ed153 | 8546 | int bpsize; |
802188a7 | 8547 | |
c8189ed1 | 8548 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8549 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8550 | |
0d5ed153 | 8551 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 8552 | |
4082afcc | 8553 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8554 | return -1; |
2bc416ba | 8555 | |
28439a30 PA |
8556 | /* Make sure the remote is pointing at the right process, if |
8557 | necessary. */ | |
8558 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8559 | set_general_process (); | |
8560 | ||
4fff2411 JZ |
8561 | rs = get_remote_state (); |
8562 | p = rs->buf; | |
bba74b36 | 8563 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8564 | |
96baa820 JM |
8565 | *(p++) = 'Z'; |
8566 | *(p++) = '1'; | |
8567 | *(p++) = ','; | |
802188a7 | 8568 | |
0d5ed153 | 8569 | addr = remote_address_masked (addr); |
96baa820 | 8570 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 8571 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 8572 | |
efcc2da7 | 8573 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 8574 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8575 | |
78eff0ec | 8576 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
8577 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8578 | ||
6d820c5c DJ |
8579 | putpkt (rs->buf); |
8580 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8581 | |
6d820c5c | 8582 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8583 | { |
8584 | case PACKET_ERROR: | |
dd61ec5c MW |
8585 | if (rs->buf[1] == '.') |
8586 | { | |
8587 | message = strchr (rs->buf + 2, '.'); | |
8588 | if (message) | |
0316657e | 8589 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8590 | } |
8591 | return -1; | |
d471ea57 AC |
8592 | case PACKET_UNKNOWN: |
8593 | return -1; | |
8594 | case PACKET_OK: | |
0d5ed153 MR |
8595 | bp_tgt->placed_address = addr; |
8596 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8597 | return 0; |
8598 | } | |
8e65ff28 | 8599 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8600 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8601 | } |
8602 | ||
d471ea57 | 8603 | |
802188a7 | 8604 | static int |
a64dc96c | 8605 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8606 | struct bp_target_info *bp_tgt) |
96baa820 | 8607 | { |
8181d85f | 8608 | CORE_ADDR addr; |
d01949b6 | 8609 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8610 | char *p = rs->buf; |
bba74b36 | 8611 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8612 | |
4082afcc | 8613 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8614 | return -1; |
802188a7 | 8615 | |
28439a30 PA |
8616 | /* Make sure the remote is pointing at the right process, if |
8617 | necessary. */ | |
8618 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8619 | set_general_process (); | |
8620 | ||
96baa820 JM |
8621 | *(p++) = 'z'; |
8622 | *(p++) = '1'; | |
8623 | *(p++) = ','; | |
802188a7 | 8624 | |
8181d85f | 8625 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8626 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8627 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8628 | |
6d820c5c DJ |
8629 | putpkt (rs->buf); |
8630 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8631 | |
6d820c5c | 8632 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8633 | { |
8634 | case PACKET_ERROR: | |
8635 | case PACKET_UNKNOWN: | |
8636 | return -1; | |
8637 | case PACKET_OK: | |
8638 | return 0; | |
8639 | } | |
8e65ff28 | 8640 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8641 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8642 | } |
96baa820 | 8643 | |
4a5e7a5b PA |
8644 | /* Verify memory using the "qCRC:" request. */ |
8645 | ||
8646 | static int | |
8647 | remote_verify_memory (struct target_ops *ops, | |
8648 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8649 | { | |
8650 | struct remote_state *rs = get_remote_state (); | |
8651 | unsigned long host_crc, target_crc; | |
8652 | char *tmp; | |
8653 | ||
936d2992 PA |
8654 | /* It doesn't make sense to use qCRC if the remote target is |
8655 | connected but not running. */ | |
8656 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
8657 | { | |
8658 | enum packet_result result; | |
28439a30 | 8659 | |
936d2992 PA |
8660 | /* Make sure the remote is pointing at the right process. */ |
8661 | set_general_process (); | |
4a5e7a5b | 8662 | |
936d2992 PA |
8663 | /* FIXME: assumes lma can fit into long. */ |
8664 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8665 | (long) lma, (long) size); | |
8666 | putpkt (rs->buf); | |
4a5e7a5b | 8667 | |
936d2992 PA |
8668 | /* Be clever; compute the host_crc before waiting for target |
8669 | reply. */ | |
8670 | host_crc = xcrc32 (data, size, 0xffffffff); | |
8671 | ||
8672 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 8673 | |
936d2992 PA |
8674 | result = packet_ok (rs->buf, |
8675 | &remote_protocol_packets[PACKET_qCRC]); | |
8676 | if (result == PACKET_ERROR) | |
8677 | return -1; | |
8678 | else if (result == PACKET_OK) | |
8679 | { | |
8680 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8681 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 8682 | |
936d2992 PA |
8683 | return (host_crc == target_crc); |
8684 | } | |
8685 | } | |
4a5e7a5b | 8686 | |
936d2992 | 8687 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
8688 | } |
8689 | ||
c906108c SS |
8690 | /* compare-sections command |
8691 | ||
8692 | With no arguments, compares each loadable section in the exec bfd | |
8693 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8694 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8695 | |
c906108c | 8696 | static void |
fba45db2 | 8697 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8698 | { |
8699 | asection *s; | |
c906108c | 8700 | struct cleanup *old_chain; |
948f8e3d | 8701 | gdb_byte *sectdata; |
ce359b09 | 8702 | const char *sectname; |
c906108c SS |
8703 | bfd_size_type size; |
8704 | bfd_vma lma; | |
8705 | int matched = 0; | |
8706 | int mismatched = 0; | |
4a5e7a5b | 8707 | int res; |
95cf3b38 | 8708 | int read_only = 0; |
c906108c SS |
8709 | |
8710 | if (!exec_bfd) | |
8a3fe4f8 | 8711 | error (_("command cannot be used without an exec file")); |
c906108c | 8712 | |
28439a30 PA |
8713 | /* Make sure the remote is pointing at the right process. */ |
8714 | set_general_process (); | |
8715 | ||
95cf3b38 DT |
8716 | if (args != NULL && strcmp (args, "-r") == 0) |
8717 | { | |
8718 | read_only = 1; | |
8719 | args = NULL; | |
8720 | } | |
8721 | ||
c5aa993b | 8722 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8723 | { |
8724 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8725 | continue; /* Skip non-loadable section. */ |
c906108c | 8726 | |
95cf3b38 DT |
8727 | if (read_only && (s->flags & SEC_READONLY) == 0) |
8728 | continue; /* Skip writeable sections */ | |
8729 | ||
2c500098 | 8730 | size = bfd_get_section_size (s); |
c906108c | 8731 | if (size == 0) |
0df8b418 | 8732 | continue; /* Skip zero-length section. */ |
c906108c | 8733 | |
ce359b09 | 8734 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8735 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8736 | continue; /* Not the section selected by user. */ |
c906108c | 8737 | |
0df8b418 | 8738 | matched = 1; /* Do this section. */ |
c906108c | 8739 | lma = s->lma; |
c906108c | 8740 | |
c906108c | 8741 | sectdata = xmalloc (size); |
b8c9b27d | 8742 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8743 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8744 | |
4a5e7a5b PA |
8745 | res = target_verify_memory (sectdata, lma, size); |
8746 | ||
8747 | if (res == -1) | |
5af949e3 | 8748 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8749 | paddress (target_gdbarch (), lma), |
8750 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8751 | |
5af949e3 | 8752 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8753 | paddress (target_gdbarch (), lma), |
8754 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8755 | if (res) |
c906108c SS |
8756 | printf_filtered ("matched.\n"); |
8757 | else | |
c5aa993b JM |
8758 | { |
8759 | printf_filtered ("MIS-MATCHED!\n"); | |
8760 | mismatched++; | |
8761 | } | |
c906108c SS |
8762 | |
8763 | do_cleanups (old_chain); | |
8764 | } | |
8765 | if (mismatched > 0) | |
936d2992 | 8766 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 8767 | the loaded file\n")); |
c906108c | 8768 | if (args && !matched) |
a3f17187 | 8769 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8770 | } |
8771 | ||
0e7f50da UW |
8772 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8773 | into remote target. The number of bytes written to the remote | |
8774 | target is returned, or -1 for error. */ | |
8775 | ||
9b409511 | 8776 | static enum target_xfer_status |
0e7f50da UW |
8777 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
8778 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 8779 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
8780 | struct packet_config *packet) |
8781 | { | |
8782 | int i, buf_len; | |
8783 | ULONGEST n; | |
0e7f50da UW |
8784 | struct remote_state *rs = get_remote_state (); |
8785 | int max_size = get_memory_write_packet_size (); | |
8786 | ||
8787 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8788 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8789 | |
8790 | /* Insert header. */ | |
8791 | i = snprintf (rs->buf, max_size, | |
8792 | "qXfer:%s:write:%s:%s:", | |
8793 | object_name, annex ? annex : "", | |
8794 | phex_nz (offset, sizeof offset)); | |
8795 | max_size -= (i + 1); | |
8796 | ||
8797 | /* Escape as much data as fits into rs->buf. */ | |
8798 | buf_len = remote_escape_output | |
bc20a4af | 8799 | (writebuf, len, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
8800 | |
8801 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8802 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8803 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8804 | return TARGET_XFER_E_IO; |
0e7f50da UW |
8805 | |
8806 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
8807 | |
8808 | *xfered_len = n; | |
8809 | return TARGET_XFER_OK; | |
0e7f50da UW |
8810 | } |
8811 | ||
0876f84a DJ |
8812 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8813 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8814 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8815 | The number of bytes read may be less than LEN without indicating an | |
8816 | EOF. PACKET is checked and updated to indicate whether the remote | |
8817 | target supports this object. */ | |
8818 | ||
9b409511 | 8819 | static enum target_xfer_status |
0876f84a DJ |
8820 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
8821 | const char *annex, | |
8822 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 8823 | ULONGEST *xfered_len, |
0876f84a DJ |
8824 | struct packet_config *packet) |
8825 | { | |
0876f84a | 8826 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
8827 | LONGEST i, n, packet_len; |
8828 | ||
8829 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 8830 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8831 | |
8832 | /* Check whether we've cached an end-of-object packet that matches | |
8833 | this request. */ | |
8e88304f | 8834 | if (rs->finished_object) |
0876f84a | 8835 | { |
8e88304f TT |
8836 | if (strcmp (object_name, rs->finished_object) == 0 |
8837 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
8838 | && offset == rs->finished_offset) | |
9b409511 YQ |
8839 | return TARGET_XFER_EOF; |
8840 | ||
0876f84a DJ |
8841 | |
8842 | /* Otherwise, we're now reading something different. Discard | |
8843 | the cache. */ | |
8e88304f TT |
8844 | xfree (rs->finished_object); |
8845 | xfree (rs->finished_annex); | |
8846 | rs->finished_object = NULL; | |
8847 | rs->finished_annex = NULL; | |
0876f84a DJ |
8848 | } |
8849 | ||
8850 | /* Request only enough to fit in a single packet. The actual data | |
8851 | may not, since we don't know how much of it will need to be escaped; | |
8852 | the target is free to respond with slightly less data. We subtract | |
8853 | five to account for the response type and the protocol frame. */ | |
8854 | n = min (get_remote_packet_size () - 5, len); | |
8855 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8856 | object_name, annex ? annex : "", | |
8857 | phex_nz (offset, sizeof offset), | |
8858 | phex_nz (n, sizeof n)); | |
8859 | i = putpkt (rs->buf); | |
8860 | if (i < 0) | |
2ed4b548 | 8861 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8862 | |
8863 | rs->buf[0] = '\0'; | |
8864 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8865 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 8866 | return TARGET_XFER_E_IO; |
0876f84a DJ |
8867 | |
8868 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8869 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8870 | ||
8871 | /* 'm' means there is (or at least might be) more data after this | |
8872 | batch. That does not make sense unless there's at least one byte | |
8873 | of data in this reply. */ | |
8874 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8875 | error (_("Remote qXfer reply contained no data.")); | |
8876 | ||
8877 | /* Got some data. */ | |
bc20a4af PA |
8878 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
8879 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
8880 | |
8881 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8882 | or possibly empty. If we have the final block of a non-empty |
8883 | object, record this fact to bypass a subsequent partial read. */ | |
8884 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 8885 | { |
8e88304f TT |
8886 | rs->finished_object = xstrdup (object_name); |
8887 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
8888 | rs->finished_offset = offset + i; | |
0876f84a DJ |
8889 | } |
8890 | ||
9b409511 YQ |
8891 | if (i == 0) |
8892 | return TARGET_XFER_EOF; | |
8893 | else | |
8894 | { | |
8895 | *xfered_len = i; | |
8896 | return TARGET_XFER_OK; | |
8897 | } | |
0876f84a DJ |
8898 | } |
8899 | ||
9b409511 | 8900 | static enum target_xfer_status |
4b8a223f | 8901 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 8902 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
8903 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
8904 | ULONGEST *xfered_len) | |
c906108c | 8905 | { |
82f73884 | 8906 | struct remote_state *rs; |
c906108c | 8907 | int i; |
6d820c5c | 8908 | char *p2; |
1e3ff5ad | 8909 | char query_type; |
c906108c | 8910 | |
e6e4e701 | 8911 | set_remote_traceframe (); |
82f73884 PA |
8912 | set_general_thread (inferior_ptid); |
8913 | ||
8914 | rs = get_remote_state (); | |
8915 | ||
b2182ed2 | 8916 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8917 | if (object == TARGET_OBJECT_MEMORY) |
8918 | { | |
2d717e4f DJ |
8919 | /* If the remote target is connected but not running, we should |
8920 | pass this request down to a lower stratum (e.g. the executable | |
8921 | file). */ | |
8922 | if (!target_has_execution) | |
9b409511 | 8923 | return TARGET_XFER_EOF; |
2d717e4f | 8924 | |
21e3b9b9 | 8925 | if (writebuf != NULL) |
9b409511 | 8926 | return remote_write_bytes (offset, writebuf, len, xfered_len); |
21e3b9b9 | 8927 | else |
8acf9577 | 8928 | return remote_read_bytes (ops, offset, readbuf, len, xfered_len); |
21e3b9b9 DJ |
8929 | } |
8930 | ||
0df8b418 | 8931 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8932 | if (object == TARGET_OBJECT_SPU) |
8933 | { | |
8934 | if (readbuf) | |
8935 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
8936 | xfered_len, &remote_protocol_packets |
8937 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
8938 | else |
8939 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
8940 | xfered_len, &remote_protocol_packets |
8941 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
8942 | } |
8943 | ||
4aa995e1 PA |
8944 | /* Handle extra signal info using qxfer packets. */ |
8945 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8946 | { | |
8947 | if (readbuf) | |
8948 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 8949 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
8950 | [PACKET_qXfer_siginfo_read]); |
8951 | else | |
3e43a32a | 8952 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 8953 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
8954 | &remote_protocol_packets |
8955 | [PACKET_qXfer_siginfo_write]); | |
8956 | } | |
8957 | ||
0fb4aa4b PA |
8958 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8959 | { | |
8960 | if (readbuf) | |
3e43a32a | 8961 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 8962 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
8963 | &remote_protocol_packets |
8964 | [PACKET_qXfer_statictrace_read]); | |
8965 | else | |
2ed4b548 | 8966 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
8967 | } |
8968 | ||
a76d924d DJ |
8969 | /* Only handle flash writes. */ |
8970 | if (writebuf != NULL) | |
8971 | { | |
8972 | LONGEST xfered; | |
8973 | ||
8974 | switch (object) | |
8975 | { | |
8976 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
8977 | return remote_flash_write (ops, offset, len, xfered_len, |
8978 | writebuf); | |
a76d924d DJ |
8979 | |
8980 | default: | |
2ed4b548 | 8981 | return TARGET_XFER_E_IO; |
a76d924d DJ |
8982 | } |
8983 | } | |
4b8a223f | 8984 | |
1e3ff5ad AC |
8985 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8986 | objects!!! Instead specify new query packets. */ | |
8987 | switch (object) | |
c906108c | 8988 | { |
1e3ff5ad AC |
8989 | case TARGET_OBJECT_AVR: |
8990 | query_type = 'R'; | |
8991 | break; | |
802188a7 RM |
8992 | |
8993 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8994 | gdb_assert (annex == NULL); |
8995 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 8996 | xfered_len, |
0876f84a | 8997 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 8998 | |
23181151 DJ |
8999 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9000 | return remote_read_qxfer | |
9b409511 | 9001 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9002 | &remote_protocol_packets[PACKET_qXfer_features]); |
9003 | ||
cfa9d6d9 DJ |
9004 | case TARGET_OBJECT_LIBRARIES: |
9005 | return remote_read_qxfer | |
9b409511 | 9006 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9007 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9008 | ||
2268b414 JK |
9009 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9010 | return remote_read_qxfer | |
9b409511 | 9011 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9012 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9013 | ||
fd79ecee DJ |
9014 | case TARGET_OBJECT_MEMORY_MAP: |
9015 | gdb_assert (annex == NULL); | |
9016 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9017 | xfered_len, |
fd79ecee DJ |
9018 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9019 | ||
07e059b5 VP |
9020 | case TARGET_OBJECT_OSDATA: |
9021 | /* Should only get here if we're connected. */ | |
5d93a237 | 9022 | gdb_assert (rs->remote_desc); |
07e059b5 | 9023 | return remote_read_qxfer |
9b409511 | 9024 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9025 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9026 | ||
dc146f7c VP |
9027 | case TARGET_OBJECT_THREADS: |
9028 | gdb_assert (annex == NULL); | |
9029 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9030 | xfered_len, |
dc146f7c VP |
9031 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9032 | ||
b3b9301e PA |
9033 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9034 | gdb_assert (annex == NULL); | |
9035 | return remote_read_qxfer | |
9b409511 | 9036 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9037 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9038 | |
9039 | case TARGET_OBJECT_FDPIC: | |
9040 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9041 | xfered_len, |
78d85199 | 9042 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9043 | |
9044 | case TARGET_OBJECT_OPENVMS_UIB: | |
9045 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9046 | xfered_len, |
169081d0 TG |
9047 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9048 | ||
9accd112 MM |
9049 | case TARGET_OBJECT_BTRACE: |
9050 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9051 | xfered_len, |
9accd112 MM |
9052 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9053 | ||
f4abbc16 MM |
9054 | case TARGET_OBJECT_BTRACE_CONF: |
9055 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9056 | len, xfered_len, | |
9057 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9058 | ||
1e3ff5ad | 9059 | default: |
2ed4b548 | 9060 | return TARGET_XFER_E_IO; |
c906108c SS |
9061 | } |
9062 | ||
0df8b418 | 9063 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9064 | large enough let the caller deal with it. */ |
ea9c271d | 9065 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9066 | return TARGET_XFER_E_IO; |
ea9c271d | 9067 | len = get_remote_packet_size (); |
1e3ff5ad | 9068 | |
23860348 | 9069 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9070 | if (!rs->remote_desc) |
8a3fe4f8 | 9071 | error (_("remote query is only available after target open")); |
c906108c | 9072 | |
1e3ff5ad | 9073 | gdb_assert (annex != NULL); |
4b8a223f | 9074 | gdb_assert (readbuf != NULL); |
c906108c | 9075 | |
6d820c5c | 9076 | p2 = rs->buf; |
c906108c SS |
9077 | *p2++ = 'q'; |
9078 | *p2++ = query_type; | |
9079 | ||
23860348 MS |
9080 | /* We used one buffer char for the remote protocol q command and |
9081 | another for the query type. As the remote protocol encapsulation | |
9082 | uses 4 chars plus one extra in case we are debugging | |
9083 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9084 | string. */ | |
c906108c | 9085 | i = 0; |
ea9c271d | 9086 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9087 | { |
1e3ff5ad AC |
9088 | /* Bad caller may have sent forbidden characters. */ |
9089 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9090 | *p2++ = annex[i]; | |
c906108c SS |
9091 | i++; |
9092 | } | |
1e3ff5ad AC |
9093 | *p2 = '\0'; |
9094 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9095 | |
6d820c5c | 9096 | i = putpkt (rs->buf); |
c5aa993b | 9097 | if (i < 0) |
2ed4b548 | 9098 | return TARGET_XFER_E_IO; |
c906108c | 9099 | |
6d820c5c DJ |
9100 | getpkt (&rs->buf, &rs->buf_size, 0); |
9101 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9102 | |
9b409511 YQ |
9103 | *xfered_len = strlen ((char *) readbuf); |
9104 | return TARGET_XFER_OK; | |
c906108c SS |
9105 | } |
9106 | ||
08388c79 DE |
9107 | static int |
9108 | remote_search_memory (struct target_ops* ops, | |
9109 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9110 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9111 | CORE_ADDR *found_addrp) | |
9112 | { | |
f5656ead | 9113 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9114 | struct remote_state *rs = get_remote_state (); |
9115 | int max_size = get_memory_write_packet_size (); | |
9116 | struct packet_config *packet = | |
9117 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9118 | /* Number of packet bytes used to encode the pattern; |
9119 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9120 | int escaped_pattern_len; |
0df8b418 | 9121 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9122 | int used_pattern_len; |
9123 | int i; | |
9124 | int found; | |
9125 | ULONGEST found_addr; | |
9126 | ||
9127 | /* Don't go to the target if we don't have to. | |
9128 | This is done before checking packet->support to avoid the possibility that | |
9129 | a success for this edge case means the facility works in general. */ | |
9130 | if (pattern_len > search_space_len) | |
9131 | return 0; | |
9132 | if (pattern_len == 0) | |
9133 | { | |
9134 | *found_addrp = start_addr; | |
9135 | return 1; | |
9136 | } | |
9137 | ||
9138 | /* If we already know the packet isn't supported, fall back to the simple | |
9139 | way of searching memory. */ | |
9140 | ||
4082afcc | 9141 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9142 | { |
9143 | /* Target doesn't provided special support, fall back and use the | |
9144 | standard support (copy memory and do the search here). */ | |
9145 | return simple_search_memory (ops, start_addr, search_space_len, | |
9146 | pattern, pattern_len, found_addrp); | |
9147 | } | |
9148 | ||
28439a30 PA |
9149 | /* Make sure the remote is pointing at the right process. */ |
9150 | set_general_process (); | |
9151 | ||
08388c79 DE |
9152 | /* Insert header. */ |
9153 | i = snprintf (rs->buf, max_size, | |
9154 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9155 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9156 | phex_nz (search_space_len, sizeof (search_space_len))); |
9157 | max_size -= (i + 1); | |
9158 | ||
9159 | /* Escape as much data as fits into rs->buf. */ | |
9160 | escaped_pattern_len = | |
bc20a4af | 9161 | remote_escape_output (pattern, pattern_len, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9162 | &used_pattern_len, max_size); |
9163 | ||
9164 | /* Bail if the pattern is too large. */ | |
9165 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9166 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9167 | |
9168 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9169 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9170 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9171 | { | |
9172 | /* The request may not have worked because the command is not | |
9173 | supported. If so, fall back to the simple way. */ | |
9174 | if (packet->support == PACKET_DISABLE) | |
9175 | { | |
9176 | return simple_search_memory (ops, start_addr, search_space_len, | |
9177 | pattern, pattern_len, found_addrp); | |
9178 | } | |
9179 | return -1; | |
9180 | } | |
9181 | ||
9182 | if (rs->buf[0] == '0') | |
9183 | found = 0; | |
9184 | else if (rs->buf[0] == '1') | |
9185 | { | |
9186 | found = 1; | |
9187 | if (rs->buf[1] != ',') | |
10e0fa18 | 9188 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9189 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9190 | *found_addrp = found_addr; | |
9191 | } | |
9192 | else | |
10e0fa18 | 9193 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9194 | |
9195 | return found; | |
9196 | } | |
9197 | ||
96baa820 | 9198 | static void |
a30bf1f1 | 9199 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9200 | struct ui_file *outbuf) |
96baa820 | 9201 | { |
d01949b6 | 9202 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9203 | char *p = rs->buf; |
96baa820 | 9204 | |
5d93a237 | 9205 | if (!rs->remote_desc) |
8a3fe4f8 | 9206 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9207 | |
23860348 | 9208 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9209 | if (command == NULL) |
9210 | command = ""; | |
9211 | ||
23860348 | 9212 | /* The query prefix. */ |
2e9f7625 DJ |
9213 | strcpy (rs->buf, "qRcmd,"); |
9214 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9215 | |
3e43a32a MS |
9216 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9217 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9218 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9219 | |
23860348 | 9220 | /* Encode the actual command. */ |
a30bf1f1 | 9221 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9222 | |
6d820c5c | 9223 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9224 | error (_("Communication problem with target.")); |
96baa820 JM |
9225 | |
9226 | /* get/display the response */ | |
9227 | while (1) | |
9228 | { | |
2e9f7625 DJ |
9229 | char *buf; |
9230 | ||
00bf0b85 | 9231 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9232 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9233 | rs->buf[0] = '\0'; |
5b37825d PW |
9234 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9235 | { | |
9236 | /* Timeout. Continue to (try to) read responses. | |
9237 | This is better than stopping with an error, assuming the stub | |
9238 | is still executing the (long) monitor command. | |
9239 | If needed, the user can interrupt gdb using C-c, obtaining | |
9240 | an effect similar to stop on timeout. */ | |
9241 | continue; | |
9242 | } | |
2e9f7625 | 9243 | buf = rs->buf; |
96baa820 | 9244 | if (buf[0] == '\0') |
8a3fe4f8 | 9245 | error (_("Target does not support this command.")); |
96baa820 JM |
9246 | if (buf[0] == 'O' && buf[1] != 'K') |
9247 | { | |
23860348 | 9248 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9249 | continue; |
9250 | } | |
9251 | if (strcmp (buf, "OK") == 0) | |
9252 | break; | |
7be570e7 JM |
9253 | if (strlen (buf) == 3 && buf[0] == 'E' |
9254 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9255 | { | |
8a3fe4f8 | 9256 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9257 | } |
96baa820 JM |
9258 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9259 | { | |
9260 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9261 | |
96baa820 JM |
9262 | fputc_unfiltered (c, outbuf); |
9263 | } | |
9264 | break; | |
9265 | } | |
9266 | } | |
9267 | ||
fd79ecee DJ |
9268 | static VEC(mem_region_s) * |
9269 | remote_memory_map (struct target_ops *ops) | |
9270 | { | |
9271 | VEC(mem_region_s) *result = NULL; | |
9272 | char *text = target_read_stralloc (¤t_target, | |
9273 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9274 | ||
9275 | if (text) | |
9276 | { | |
9277 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9278 | |
fd79ecee DJ |
9279 | result = parse_memory_map (text); |
9280 | do_cleanups (back_to); | |
9281 | } | |
9282 | ||
9283 | return result; | |
9284 | } | |
9285 | ||
c906108c | 9286 | static void |
fba45db2 | 9287 | packet_command (char *args, int from_tty) |
c906108c | 9288 | { |
d01949b6 | 9289 | struct remote_state *rs = get_remote_state (); |
c906108c | 9290 | |
5d93a237 | 9291 | if (!rs->remote_desc) |
8a3fe4f8 | 9292 | error (_("command can only be used with remote target")); |
c906108c | 9293 | |
c5aa993b | 9294 | if (!args) |
8a3fe4f8 | 9295 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9296 | |
9297 | puts_filtered ("sending: "); | |
9298 | print_packet (args); | |
9299 | puts_filtered ("\n"); | |
9300 | putpkt (args); | |
9301 | ||
6d820c5c | 9302 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9303 | puts_filtered ("received: "); |
6d820c5c | 9304 | print_packet (rs->buf); |
c906108c SS |
9305 | puts_filtered ("\n"); |
9306 | } | |
9307 | ||
9308 | #if 0 | |
23860348 | 9309 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9310 | |
a14ed312 | 9311 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9312 | |
a14ed312 | 9313 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9314 | |
a14ed312 | 9315 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9316 | |
a14ed312 | 9317 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9318 | |
23860348 | 9319 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9320 | |
a14ed312 | 9321 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9322 | |
23860348 | 9323 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9324 | |
a14ed312 | 9325 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9326 | |
a14ed312 | 9327 | static void init_remote_threadtests (void); |
c906108c | 9328 | |
23860348 | 9329 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9330 | |
9331 | static void | |
fba45db2 | 9332 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9333 | { |
9334 | int sample_thread = SAMPLE_THREAD; | |
9335 | ||
a3f17187 | 9336 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9337 | set_general_thread (sample_thread); |
c906108c SS |
9338 | } |
9339 | ||
9340 | ||
9341 | static void | |
fba45db2 | 9342 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9343 | { |
9344 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9345 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9346 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9347 | |
79d7f229 | 9348 | if (remote_thread_alive (ptid)) |
c906108c SS |
9349 | printf_filtered ("PASS: Thread alive test\n"); |
9350 | else | |
9351 | printf_filtered ("FAIL: Thread alive test\n"); | |
9352 | } | |
9353 | ||
23860348 | 9354 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9355 | |
9356 | void | |
fba45db2 | 9357 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9358 | { |
9359 | char hexid[20]; | |
9360 | ||
23860348 | 9361 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9362 | hexid[16] = 0; |
9363 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9364 | } | |
9365 | ||
9366 | static void | |
fba45db2 | 9367 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9368 | { |
9369 | int startflag = 1; | |
9370 | threadref nextthread; | |
9371 | int done, result_count; | |
9372 | threadref threadlist[3]; | |
9373 | ||
9374 | printf_filtered ("Remote Threadlist test\n"); | |
9375 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9376 | &result_count, &threadlist[0])) | |
9377 | printf_filtered ("FAIL: threadlist test\n"); | |
9378 | else | |
9379 | { | |
9380 | threadref *scan = threadlist; | |
9381 | threadref *limit = scan + result_count; | |
9382 | ||
9383 | while (scan < limit) | |
9384 | output_threadid (" thread ", scan++); | |
9385 | } | |
9386 | } | |
9387 | ||
9388 | void | |
fba45db2 | 9389 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9390 | { |
9391 | output_threadid ("Threadid: ", &info->threadid); | |
9392 | printf_filtered ("Name: %s\n ", info->shortname); | |
9393 | printf_filtered ("State: %s\n", info->display); | |
9394 | printf_filtered ("other: %s\n\n", info->more_display); | |
9395 | } | |
9396 | ||
9397 | int | |
fba45db2 | 9398 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9399 | { |
9400 | int result; | |
9401 | int set; | |
9402 | struct gdb_ext_thread_info threadinfo; | |
9403 | ||
9404 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9405 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9406 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9407 | display_thread_info (&threadinfo); | |
9408 | return result; | |
9409 | } | |
9410 | ||
9411 | static void | |
fba45db2 | 9412 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9413 | { |
9414 | int athread = SAMPLE_THREAD; | |
9415 | threadref thread; | |
9416 | int set; | |
9417 | ||
9418 | int_to_threadref (&thread, athread); | |
9419 | printf_filtered ("Remote Threadinfo test\n"); | |
9420 | if (!get_and_display_threadinfo (&thread)) | |
9421 | printf_filtered ("FAIL cannot get thread info\n"); | |
9422 | } | |
9423 | ||
9424 | static int | |
fba45db2 | 9425 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9426 | { |
9427 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9428 | return get_and_display_threadinfo (ref); | |
9429 | } | |
9430 | ||
9431 | static void | |
fba45db2 | 9432 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9433 | { |
9434 | printf_filtered ("Remote Threadlist update test\n"); | |
9435 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9436 | } | |
9437 | ||
9438 | static void | |
9439 | init_remote_threadtests (void) | |
9440 | { | |
3e43a32a MS |
9441 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9442 | _("Fetch and print the remote list of " | |
9443 | "thread identifiers, one pkt only")); | |
c906108c | 9444 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9445 | _("Fetch and display info about one thread")); |
c906108c | 9446 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9447 | _("Test setting to a different thread")); |
c906108c | 9448 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9449 | _("Iterate through updating all remote thread info")); |
c906108c | 9450 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9451 | _(" Remote thread alive test ")); |
c906108c SS |
9452 | } |
9453 | ||
9454 | #endif /* 0 */ | |
9455 | ||
f3fb8c85 MS |
9456 | /* Convert a thread ID to a string. Returns the string in a static |
9457 | buffer. */ | |
9458 | ||
9459 | static char * | |
117de6a9 | 9460 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9461 | { |
79d7f229 | 9462 | static char buf[64]; |
82f73884 | 9463 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9464 | |
7cee1e54 PA |
9465 | if (ptid_equal (ptid, null_ptid)) |
9466 | return normal_pid_to_str (ptid); | |
9467 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9468 | { |
9469 | /* Printing an inferior target id. */ | |
9470 | ||
9471 | /* When multi-process extensions are off, there's no way in the | |
9472 | remote protocol to know the remote process id, if there's any | |
9473 | at all. There's one exception --- when we're connected with | |
9474 | target extended-remote, and we manually attached to a process | |
9475 | with "attach PID". We don't record anywhere a flag that | |
9476 | allows us to distinguish that case from the case of | |
9477 | connecting with extended-remote and the stub already being | |
9478 | attached to a process, and reporting yes to qAttached, hence | |
9479 | no smart special casing here. */ | |
9480 | if (!remote_multi_process_p (rs)) | |
9481 | { | |
9482 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9483 | return buf; | |
9484 | } | |
9485 | ||
9486 | return normal_pid_to_str (ptid); | |
82f73884 | 9487 | } |
ecd0ada5 | 9488 | else |
79d7f229 | 9489 | { |
ecd0ada5 PA |
9490 | if (ptid_equal (magic_null_ptid, ptid)) |
9491 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9492 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 | 9493 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
ba348170 | 9494 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); |
ecd0ada5 PA |
9495 | else |
9496 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 9497 | ptid_get_lwp (ptid)); |
79d7f229 PA |
9498 | return buf; |
9499 | } | |
f3fb8c85 MS |
9500 | } |
9501 | ||
38691318 KB |
9502 | /* Get the address of the thread local variable in OBJFILE which is |
9503 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9504 | ||
9505 | static CORE_ADDR | |
117de6a9 PA |
9506 | remote_get_thread_local_address (struct target_ops *ops, |
9507 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9508 | { |
4082afcc | 9509 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
9510 | { |
9511 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9512 | char *p = rs->buf; |
82f73884 | 9513 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9514 | enum packet_result result; |
38691318 KB |
9515 | |
9516 | strcpy (p, "qGetTLSAddr:"); | |
9517 | p += strlen (p); | |
82f73884 | 9518 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9519 | *p++ = ','; |
9520 | p += hexnumstr (p, offset); | |
9521 | *p++ = ','; | |
9522 | p += hexnumstr (p, lm); | |
9523 | *p++ = '\0'; | |
9524 | ||
6d820c5c DJ |
9525 | putpkt (rs->buf); |
9526 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9527 | result = packet_ok (rs->buf, |
9528 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9529 | if (result == PACKET_OK) |
38691318 KB |
9530 | { |
9531 | ULONGEST result; | |
9532 | ||
6d820c5c | 9533 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9534 | return result; |
9535 | } | |
571dd617 | 9536 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9537 | throw_error (TLS_GENERIC_ERROR, |
9538 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9539 | else |
109c3e39 AC |
9540 | throw_error (TLS_GENERIC_ERROR, |
9541 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9542 | } |
9543 | else | |
109c3e39 AC |
9544 | throw_error (TLS_GENERIC_ERROR, |
9545 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9546 | /* Not reached. */ |
9547 | return 0; | |
9548 | } | |
9549 | ||
711e434b PM |
9550 | /* Provide thread local base, i.e. Thread Information Block address. |
9551 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9552 | ||
70221824 | 9553 | static int |
bd7ae0f5 | 9554 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 9555 | { |
4082afcc | 9556 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
9557 | { |
9558 | struct remote_state *rs = get_remote_state (); | |
9559 | char *p = rs->buf; | |
9560 | char *endp = rs->buf + get_remote_packet_size (); | |
9561 | enum packet_result result; | |
9562 | ||
9563 | strcpy (p, "qGetTIBAddr:"); | |
9564 | p += strlen (p); | |
9565 | p = write_ptid (p, endp, ptid); | |
9566 | *p++ = '\0'; | |
9567 | ||
9568 | putpkt (rs->buf); | |
9569 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9570 | result = packet_ok (rs->buf, | |
9571 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9572 | if (result == PACKET_OK) | |
9573 | { | |
9574 | ULONGEST result; | |
9575 | ||
9576 | unpack_varlen_hex (rs->buf, &result); | |
9577 | if (addr) | |
9578 | *addr = (CORE_ADDR) result; | |
9579 | return 1; | |
9580 | } | |
9581 | else if (result == PACKET_UNKNOWN) | |
9582 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9583 | else | |
9584 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9585 | } | |
9586 | else | |
9587 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9588 | /* Not reached. */ | |
9589 | return 0; | |
9590 | } | |
9591 | ||
29709017 DJ |
9592 | /* Support for inferring a target description based on the current |
9593 | architecture and the size of a 'g' packet. While the 'g' packet | |
9594 | can have any size (since optional registers can be left off the | |
9595 | end), some sizes are easily recognizable given knowledge of the | |
9596 | approximate architecture. */ | |
9597 | ||
9598 | struct remote_g_packet_guess | |
9599 | { | |
9600 | int bytes; | |
9601 | const struct target_desc *tdesc; | |
9602 | }; | |
9603 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9604 | DEF_VEC_O(remote_g_packet_guess_s); | |
9605 | ||
9606 | struct remote_g_packet_data | |
9607 | { | |
9608 | VEC(remote_g_packet_guess_s) *guesses; | |
9609 | }; | |
9610 | ||
9611 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9612 | ||
9613 | static void * | |
9614 | remote_g_packet_data_init (struct obstack *obstack) | |
9615 | { | |
9616 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9617 | } | |
9618 | ||
9619 | void | |
9620 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9621 | const struct target_desc *tdesc) | |
9622 | { | |
9623 | struct remote_g_packet_data *data | |
9624 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9625 | struct remote_g_packet_guess new_guess, *guess; | |
9626 | int ix; | |
9627 | ||
9628 | gdb_assert (tdesc != NULL); | |
9629 | ||
9630 | for (ix = 0; | |
9631 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9632 | ix++) | |
9633 | if (guess->bytes == bytes) | |
9634 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9635 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9636 | bytes); |
9637 | ||
9638 | new_guess.bytes = bytes; | |
9639 | new_guess.tdesc = tdesc; | |
9640 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9641 | } | |
9642 | ||
d962ef82 DJ |
9643 | /* Return 1 if remote_read_description would do anything on this target |
9644 | and architecture, 0 otherwise. */ | |
9645 | ||
9646 | static int | |
9647 | remote_read_description_p (struct target_ops *target) | |
9648 | { | |
9649 | struct remote_g_packet_data *data | |
f5656ead | 9650 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9651 | |
9652 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9653 | return 1; | |
9654 | ||
9655 | return 0; | |
9656 | } | |
9657 | ||
29709017 DJ |
9658 | static const struct target_desc * |
9659 | remote_read_description (struct target_ops *target) | |
9660 | { | |
9661 | struct remote_g_packet_data *data | |
f5656ead | 9662 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9663 | |
d962ef82 DJ |
9664 | /* Do not try this during initial connection, when we do not know |
9665 | whether there is a running but stopped thread. */ | |
9666 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 9667 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 9668 | |
29709017 DJ |
9669 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9670 | { | |
9671 | struct remote_g_packet_guess *guess; | |
9672 | int ix; | |
9673 | int bytes = send_g_packet (); | |
9674 | ||
9675 | for (ix = 0; | |
9676 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9677 | ix++) | |
9678 | if (guess->bytes == bytes) | |
9679 | return guess->tdesc; | |
9680 | ||
9681 | /* We discard the g packet. A minor optimization would be to | |
9682 | hold on to it, and fill the register cache once we have selected | |
9683 | an architecture, but it's too tricky to do safely. */ | |
9684 | } | |
9685 | ||
2117c711 | 9686 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
9687 | } |
9688 | ||
a6b151f1 DJ |
9689 | /* Remote file transfer support. This is host-initiated I/O, not |
9690 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9691 | ||
9692 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9693 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9694 | decrease *LEFT. Otherwise raise an error. */ | |
9695 | ||
9696 | static void | |
9697 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9698 | { | |
9699 | int len = strlen (string); | |
9700 | ||
9701 | if (len > *left) | |
9702 | error (_("Packet too long for target.")); | |
9703 | ||
9704 | memcpy (*buffer, string, len); | |
9705 | *buffer += len; | |
9706 | *left -= len; | |
9707 | ||
9708 | /* NUL-terminate the buffer as a convenience, if there is | |
9709 | room. */ | |
9710 | if (*left) | |
9711 | **buffer = '\0'; | |
9712 | } | |
9713 | ||
9714 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9715 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9716 | decrease *LEFT. Otherwise raise an error. */ | |
9717 | ||
9718 | static void | |
9719 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9720 | int len) | |
9721 | { | |
9722 | if (2 * len > *left) | |
9723 | error (_("Packet too long for target.")); | |
9724 | ||
9725 | bin2hex (bytes, *buffer, len); | |
9726 | *buffer += 2 * len; | |
9727 | *left -= 2 * len; | |
9728 | ||
9729 | /* NUL-terminate the buffer as a convenience, if there is | |
9730 | room. */ | |
9731 | if (*left) | |
9732 | **buffer = '\0'; | |
9733 | } | |
9734 | ||
9735 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9736 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9737 | decrease *LEFT. Otherwise raise an error. */ | |
9738 | ||
9739 | static void | |
9740 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9741 | { | |
9742 | int len = hexnumlen (value); | |
9743 | ||
9744 | if (len > *left) | |
9745 | error (_("Packet too long for target.")); | |
9746 | ||
9747 | hexnumstr (*buffer, value); | |
9748 | *buffer += len; | |
9749 | *left -= len; | |
9750 | ||
9751 | /* NUL-terminate the buffer as a convenience, if there is | |
9752 | room. */ | |
9753 | if (*left) | |
9754 | **buffer = '\0'; | |
9755 | } | |
9756 | ||
9757 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9758 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9759 | was included, and *ATTACHMENT to point to the start of the annex | |
9760 | if any. The length of the packet isn't needed here; there may | |
9761 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9762 | ||
9763 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9764 | -1 is returned, the other variables may not be initialized. */ | |
9765 | ||
9766 | static int | |
9767 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9768 | int *remote_errno, char **attachment) | |
9769 | { | |
9770 | char *p, *p2; | |
9771 | ||
9772 | *remote_errno = 0; | |
9773 | *attachment = NULL; | |
9774 | ||
9775 | if (buffer[0] != 'F') | |
9776 | return -1; | |
9777 | ||
9778 | errno = 0; | |
9779 | *retcode = strtol (&buffer[1], &p, 16); | |
9780 | if (errno != 0 || p == &buffer[1]) | |
9781 | return -1; | |
9782 | ||
9783 | /* Check for ",errno". */ | |
9784 | if (*p == ',') | |
9785 | { | |
9786 | errno = 0; | |
9787 | *remote_errno = strtol (p + 1, &p2, 16); | |
9788 | if (errno != 0 || p + 1 == p2) | |
9789 | return -1; | |
9790 | p = p2; | |
9791 | } | |
9792 | ||
9793 | /* Check for ";attachment". If there is no attachment, the | |
9794 | packet should end here. */ | |
9795 | if (*p == ';') | |
9796 | { | |
9797 | *attachment = p + 1; | |
9798 | return 0; | |
9799 | } | |
9800 | else if (*p == '\0') | |
9801 | return 0; | |
9802 | else | |
9803 | return -1; | |
9804 | } | |
9805 | ||
9806 | /* Send a prepared I/O packet to the target and read its response. | |
9807 | The prepared packet is in the global RS->BUF before this function | |
9808 | is called, and the answer is there when we return. | |
9809 | ||
9810 | COMMAND_BYTES is the length of the request to send, which may include | |
9811 | binary data. WHICH_PACKET is the packet configuration to check | |
9812 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9813 | is set to the error number and -1 is returned. Otherwise the value | |
9814 | returned by the function is returned. | |
9815 | ||
9816 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9817 | attachment is expected; an error will be reported if there's a | |
9818 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9819 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9820 | attachment's length. */ | |
9821 | ||
9822 | static int | |
9823 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9824 | int *remote_errno, char **attachment, | |
9825 | int *attachment_len) | |
9826 | { | |
9827 | struct remote_state *rs = get_remote_state (); | |
9828 | int ret, bytes_read; | |
9829 | char *attachment_tmp; | |
9830 | ||
5d93a237 | 9831 | if (!rs->remote_desc |
4082afcc | 9832 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
9833 | { |
9834 | *remote_errno = FILEIO_ENOSYS; | |
9835 | return -1; | |
9836 | } | |
9837 | ||
9838 | putpkt_binary (rs->buf, command_bytes); | |
9839 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9840 | ||
9841 | /* If it timed out, something is wrong. Don't try to parse the | |
9842 | buffer. */ | |
9843 | if (bytes_read < 0) | |
9844 | { | |
9845 | *remote_errno = FILEIO_EINVAL; | |
9846 | return -1; | |
9847 | } | |
9848 | ||
9849 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9850 | { | |
9851 | case PACKET_ERROR: | |
9852 | *remote_errno = FILEIO_EINVAL; | |
9853 | return -1; | |
9854 | case PACKET_UNKNOWN: | |
9855 | *remote_errno = FILEIO_ENOSYS; | |
9856 | return -1; | |
9857 | case PACKET_OK: | |
9858 | break; | |
9859 | } | |
9860 | ||
9861 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9862 | &attachment_tmp)) | |
9863 | { | |
9864 | *remote_errno = FILEIO_EINVAL; | |
9865 | return -1; | |
9866 | } | |
9867 | ||
9868 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9869 | if ((attachment_tmp == NULL && attachment != NULL) | |
9870 | || (attachment_tmp != NULL && attachment == NULL)) | |
9871 | { | |
9872 | *remote_errno = FILEIO_EINVAL; | |
9873 | return -1; | |
9874 | } | |
9875 | ||
9876 | /* If an attachment was found, it must point into the packet buffer; | |
9877 | work out how many bytes there were. */ | |
9878 | if (attachment_tmp != NULL) | |
9879 | { | |
9880 | *attachment = attachment_tmp; | |
9881 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9882 | } | |
9883 | ||
9884 | return ret; | |
9885 | } | |
9886 | ||
9887 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9888 | remote file descriptor, or -1 if an error occurs (and set | |
9889 | *REMOTE_ERRNO). */ | |
9890 | ||
9891 | static int | |
cd897586 TT |
9892 | remote_hostio_open (struct target_ops *self, |
9893 | const char *filename, int flags, int mode, | |
a6b151f1 DJ |
9894 | int *remote_errno) |
9895 | { | |
9896 | struct remote_state *rs = get_remote_state (); | |
9897 | char *p = rs->buf; | |
9898 | int left = get_remote_packet_size () - 1; | |
9899 | ||
9900 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9901 | ||
9902 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9903 | strlen (filename)); | |
9904 | remote_buffer_add_string (&p, &left, ","); | |
9905 | ||
9906 | remote_buffer_add_int (&p, &left, flags); | |
9907 | remote_buffer_add_string (&p, &left, ","); | |
9908 | ||
9909 | remote_buffer_add_int (&p, &left, mode); | |
9910 | ||
9911 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9912 | remote_errno, NULL, NULL); | |
9913 | } | |
9914 | ||
9915 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9916 | Return the number of bytes written, or -1 if an error occurs (and | |
9917 | set *REMOTE_ERRNO). */ | |
9918 | ||
9919 | static int | |
0d866f62 TT |
9920 | remote_hostio_pwrite (struct target_ops *self, |
9921 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
9922 | ULONGEST offset, int *remote_errno) |
9923 | { | |
9924 | struct remote_state *rs = get_remote_state (); | |
9925 | char *p = rs->buf; | |
9926 | int left = get_remote_packet_size (); | |
9927 | int out_len; | |
9928 | ||
9929 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9930 | ||
9931 | remote_buffer_add_int (&p, &left, fd); | |
9932 | remote_buffer_add_string (&p, &left, ","); | |
9933 | ||
9934 | remote_buffer_add_int (&p, &left, offset); | |
9935 | remote_buffer_add_string (&p, &left, ","); | |
9936 | ||
bc20a4af | 9937 | p += remote_escape_output (write_buf, len, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
9938 | get_remote_packet_size () - (p - rs->buf)); |
9939 | ||
9940 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9941 | remote_errno, NULL, NULL); | |
9942 | } | |
9943 | ||
9944 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9945 | Return the number of bytes read, or -1 if an error occurs (and | |
9946 | set *REMOTE_ERRNO). */ | |
9947 | ||
9948 | static int | |
a3be983c TT |
9949 | remote_hostio_pread (struct target_ops *self, |
9950 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
9951 | ULONGEST offset, int *remote_errno) |
9952 | { | |
9953 | struct remote_state *rs = get_remote_state (); | |
9954 | char *p = rs->buf; | |
9955 | char *attachment; | |
9956 | int left = get_remote_packet_size (); | |
9957 | int ret, attachment_len; | |
9958 | int read_len; | |
9959 | ||
9960 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9961 | ||
9962 | remote_buffer_add_int (&p, &left, fd); | |
9963 | remote_buffer_add_string (&p, &left, ","); | |
9964 | ||
9965 | remote_buffer_add_int (&p, &left, len); | |
9966 | remote_buffer_add_string (&p, &left, ","); | |
9967 | ||
9968 | remote_buffer_add_int (&p, &left, offset); | |
9969 | ||
9970 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9971 | remote_errno, &attachment, | |
9972 | &attachment_len); | |
9973 | ||
9974 | if (ret < 0) | |
9975 | return ret; | |
9976 | ||
bc20a4af | 9977 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
9978 | read_buf, len); |
9979 | if (read_len != ret) | |
9980 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9981 | ||
9982 | return ret; | |
9983 | } | |
9984 | ||
9985 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9986 | (and set *REMOTE_ERRNO). */ | |
9987 | ||
9988 | static int | |
df39ea25 | 9989 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
9990 | { |
9991 | struct remote_state *rs = get_remote_state (); | |
9992 | char *p = rs->buf; | |
9993 | int left = get_remote_packet_size () - 1; | |
9994 | ||
9995 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9996 | ||
9997 | remote_buffer_add_int (&p, &left, fd); | |
9998 | ||
9999 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10000 | remote_errno, NULL, NULL); | |
10001 | } | |
10002 | ||
10003 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
10004 | occurs (and set *REMOTE_ERRNO). */ | |
10005 | ||
10006 | static int | |
dbbca37d TT |
10007 | remote_hostio_unlink (struct target_ops *self, |
10008 | const char *filename, int *remote_errno) | |
a6b151f1 DJ |
10009 | { |
10010 | struct remote_state *rs = get_remote_state (); | |
10011 | char *p = rs->buf; | |
10012 | int left = get_remote_packet_size () - 1; | |
10013 | ||
10014 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
10015 | ||
10016 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10017 | strlen (filename)); | |
10018 | ||
10019 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10020 | remote_errno, NULL, NULL); | |
10021 | } | |
10022 | ||
b9e7b9c3 UW |
10023 | /* Read value of symbolic link FILENAME on the remote target. Return |
10024 | a null-terminated string allocated via xmalloc, or NULL if an error | |
10025 | occurs (and set *REMOTE_ERRNO). */ | |
10026 | ||
10027 | static char * | |
fab5aa7c TT |
10028 | remote_hostio_readlink (struct target_ops *self, |
10029 | const char *filename, int *remote_errno) | |
b9e7b9c3 UW |
10030 | { |
10031 | struct remote_state *rs = get_remote_state (); | |
10032 | char *p = rs->buf; | |
10033 | char *attachment; | |
10034 | int left = get_remote_packet_size (); | |
10035 | int len, attachment_len; | |
10036 | int read_len; | |
10037 | char *ret; | |
10038 | ||
10039 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
10040 | ||
10041 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10042 | strlen (filename)); | |
10043 | ||
10044 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10045 | remote_errno, &attachment, | |
10046 | &attachment_len); | |
10047 | ||
10048 | if (len < 0) | |
10049 | return NULL; | |
10050 | ||
10051 | ret = xmalloc (len + 1); | |
10052 | ||
bc20a4af PA |
10053 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10054 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10055 | if (read_len != len) |
10056 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10057 | ||
10058 | ret[len] = '\0'; | |
10059 | return ret; | |
10060 | } | |
10061 | ||
0a93529c GB |
10062 | /* Read information about the open file FD on the remote target |
10063 | into ST. Return 0 on success, or -1 if an error occurs (and | |
10064 | set *REMOTE_ERRNO). */ | |
10065 | ||
10066 | static int | |
10067 | remote_hostio_fstat (struct target_ops *self, | |
10068 | int fd, struct stat *st, | |
10069 | int *remote_errno) | |
10070 | { | |
10071 | struct remote_state *rs = get_remote_state (); | |
10072 | char *p = rs->buf; | |
10073 | int left = get_remote_packet_size (); | |
10074 | int attachment_len, ret; | |
10075 | char *attachment; | |
10076 | struct fio_stat fst; | |
10077 | int read_len; | |
10078 | ||
464b0089 GB |
10079 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10080 | ||
10081 | remote_buffer_add_int (&p, &left, fd); | |
10082 | ||
10083 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10084 | remote_errno, &attachment, | |
10085 | &attachment_len); | |
10086 | if (ret < 0) | |
0a93529c | 10087 | { |
464b0089 GB |
10088 | if (*remote_errno != FILEIO_ENOSYS) |
10089 | return ret; | |
10090 | ||
0a93529c GB |
10091 | /* Strictly we should return -1, ENOSYS here, but when |
10092 | "set sysroot remote:" was implemented in August 2008 | |
10093 | BFD's need for a stat function was sidestepped with | |
10094 | this hack. This was not remedied until March 2015 | |
10095 | so we retain the previous behavior to avoid breaking | |
10096 | compatibility. | |
10097 | ||
10098 | Note that the memset is a March 2015 addition; older | |
10099 | GDBs set st_size *and nothing else* so the structure | |
10100 | would have garbage in all other fields. This might | |
10101 | break something but retaining the previous behavior | |
10102 | here would be just too wrong. */ | |
10103 | ||
10104 | memset (st, 0, sizeof (struct stat)); | |
10105 | st->st_size = INT_MAX; | |
10106 | return 0; | |
10107 | } | |
10108 | ||
0a93529c GB |
10109 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10110 | (gdb_byte *) &fst, sizeof (fst)); | |
10111 | ||
10112 | if (read_len != ret) | |
10113 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10114 | ||
10115 | if (read_len != sizeof (fst)) | |
10116 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10117 | read_len, (int) sizeof (fst)); | |
10118 | ||
10119 | remote_fileio_to_host_stat (&fst, st); | |
10120 | ||
10121 | return 0; | |
10122 | } | |
10123 | ||
a6b151f1 DJ |
10124 | static int |
10125 | remote_fileio_errno_to_host (int errnum) | |
10126 | { | |
10127 | switch (errnum) | |
10128 | { | |
10129 | case FILEIO_EPERM: | |
10130 | return EPERM; | |
10131 | case FILEIO_ENOENT: | |
10132 | return ENOENT; | |
10133 | case FILEIO_EINTR: | |
10134 | return EINTR; | |
10135 | case FILEIO_EIO: | |
10136 | return EIO; | |
10137 | case FILEIO_EBADF: | |
10138 | return EBADF; | |
10139 | case FILEIO_EACCES: | |
10140 | return EACCES; | |
10141 | case FILEIO_EFAULT: | |
10142 | return EFAULT; | |
10143 | case FILEIO_EBUSY: | |
10144 | return EBUSY; | |
10145 | case FILEIO_EEXIST: | |
10146 | return EEXIST; | |
10147 | case FILEIO_ENODEV: | |
10148 | return ENODEV; | |
10149 | case FILEIO_ENOTDIR: | |
10150 | return ENOTDIR; | |
10151 | case FILEIO_EISDIR: | |
10152 | return EISDIR; | |
10153 | case FILEIO_EINVAL: | |
10154 | return EINVAL; | |
10155 | case FILEIO_ENFILE: | |
10156 | return ENFILE; | |
10157 | case FILEIO_EMFILE: | |
10158 | return EMFILE; | |
10159 | case FILEIO_EFBIG: | |
10160 | return EFBIG; | |
10161 | case FILEIO_ENOSPC: | |
10162 | return ENOSPC; | |
10163 | case FILEIO_ESPIPE: | |
10164 | return ESPIPE; | |
10165 | case FILEIO_EROFS: | |
10166 | return EROFS; | |
10167 | case FILEIO_ENOSYS: | |
10168 | return ENOSYS; | |
10169 | case FILEIO_ENAMETOOLONG: | |
10170 | return ENAMETOOLONG; | |
10171 | } | |
10172 | return -1; | |
10173 | } | |
10174 | ||
10175 | static char * | |
10176 | remote_hostio_error (int errnum) | |
10177 | { | |
10178 | int host_error = remote_fileio_errno_to_host (errnum); | |
10179 | ||
10180 | if (host_error == -1) | |
10181 | error (_("Unknown remote I/O error %d"), errnum); | |
10182 | else | |
10183 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10184 | } | |
10185 | ||
a6b151f1 DJ |
10186 | static void |
10187 | remote_hostio_close_cleanup (void *opaque) | |
10188 | { | |
10189 | int fd = *(int *) opaque; | |
10190 | int remote_errno; | |
10191 | ||
df39ea25 | 10192 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
10193 | } |
10194 | ||
f1838a98 UW |
10195 | |
10196 | static void * | |
10197 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
10198 | { | |
10199 | const char *filename = bfd_get_filename (abfd); | |
10200 | int fd, remote_errno; | |
10201 | int *stream; | |
10202 | ||
10203 | gdb_assert (remote_filename_p (filename)); | |
10204 | ||
cd897586 TT |
10205 | fd = remote_hostio_open (find_target_at (process_stratum), |
10206 | filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
f1838a98 UW |
10207 | if (fd == -1) |
10208 | { | |
10209 | errno = remote_fileio_errno_to_host (remote_errno); | |
10210 | bfd_set_error (bfd_error_system_call); | |
10211 | return NULL; | |
10212 | } | |
10213 | ||
10214 | stream = xmalloc (sizeof (int)); | |
10215 | *stream = fd; | |
10216 | return stream; | |
10217 | } | |
10218 | ||
10219 | static int | |
10220 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
10221 | { | |
10222 | int fd = *(int *)stream; | |
10223 | int remote_errno; | |
10224 | ||
10225 | xfree (stream); | |
10226 | ||
10227 | /* Ignore errors on close; these may happen if the remote | |
10228 | connection was already torn down. */ | |
df39ea25 | 10229 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
f1838a98 | 10230 | |
39ed5604 JK |
10231 | /* Zero means success. */ |
10232 | return 0; | |
f1838a98 UW |
10233 | } |
10234 | ||
10235 | static file_ptr | |
10236 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
10237 | file_ptr nbytes, file_ptr offset) | |
10238 | { | |
10239 | int fd = *(int *)stream; | |
10240 | int remote_errno; | |
10241 | file_ptr pos, bytes; | |
10242 | ||
10243 | pos = 0; | |
10244 | while (nbytes > pos) | |
10245 | { | |
a3be983c TT |
10246 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10247 | fd, (gdb_byte *) buf + pos, nbytes - pos, | |
f1838a98 UW |
10248 | offset + pos, &remote_errno); |
10249 | if (bytes == 0) | |
10250 | /* Success, but no bytes, means end-of-file. */ | |
10251 | break; | |
10252 | if (bytes == -1) | |
10253 | { | |
10254 | errno = remote_fileio_errno_to_host (remote_errno); | |
10255 | bfd_set_error (bfd_error_system_call); | |
10256 | return -1; | |
10257 | } | |
10258 | ||
10259 | pos += bytes; | |
10260 | } | |
10261 | ||
10262 | return pos; | |
10263 | } | |
10264 | ||
10265 | static int | |
10266 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
10267 | { | |
0a93529c GB |
10268 | int fd = *(int *) stream; |
10269 | int remote_errno; | |
10270 | int result; | |
10271 | ||
10272 | result = remote_hostio_fstat (find_target_at (process_stratum), | |
10273 | fd, sb, &remote_errno); | |
10274 | ||
10275 | if (result == -1) | |
10276 | { | |
10277 | errno = remote_fileio_errno_to_host (remote_errno); | |
10278 | bfd_set_error (bfd_error_system_call); | |
10279 | } | |
10280 | ||
10281 | return result; | |
f1838a98 UW |
10282 | } |
10283 | ||
10284 | int | |
10285 | remote_filename_p (const char *filename) | |
10286 | { | |
61012eef | 10287 | return startswith (filename, REMOTE_SYSROOT_PREFIX); |
f1838a98 UW |
10288 | } |
10289 | ||
10290 | bfd * | |
10291 | remote_bfd_open (const char *remote_file, const char *target) | |
10292 | { | |
64c31149 TT |
10293 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
10294 | remote_bfd_iovec_open, NULL, | |
10295 | remote_bfd_iovec_pread, | |
10296 | remote_bfd_iovec_close, | |
10297 | remote_bfd_iovec_stat); | |
10298 | ||
a4453b7e | 10299 | return abfd; |
f1838a98 UW |
10300 | } |
10301 | ||
a6b151f1 DJ |
10302 | void |
10303 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10304 | { | |
10305 | struct cleanup *back_to, *close_cleanup; | |
10306 | int retcode, fd, remote_errno, bytes, io_size; | |
10307 | FILE *file; | |
10308 | gdb_byte *buffer; | |
10309 | int bytes_in_buffer; | |
10310 | int saw_eof; | |
10311 | ULONGEST offset; | |
5d93a237 | 10312 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10313 | |
5d93a237 | 10314 | if (!rs->remote_desc) |
a6b151f1 DJ |
10315 | error (_("command can only be used with remote target")); |
10316 | ||
614c279d | 10317 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10318 | if (file == NULL) |
10319 | perror_with_name (local_file); | |
7c8a8b04 | 10320 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10321 | |
cd897586 TT |
10322 | fd = remote_hostio_open (find_target_at (process_stratum), |
10323 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
a6b151f1 DJ |
10324 | | FILEIO_O_TRUNC), |
10325 | 0700, &remote_errno); | |
10326 | if (fd == -1) | |
10327 | remote_hostio_error (remote_errno); | |
10328 | ||
10329 | /* Send up to this many bytes at once. They won't all fit in the | |
10330 | remote packet limit, so we'll transfer slightly fewer. */ | |
10331 | io_size = get_remote_packet_size (); | |
10332 | buffer = xmalloc (io_size); | |
10333 | make_cleanup (xfree, buffer); | |
10334 | ||
10335 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10336 | ||
10337 | bytes_in_buffer = 0; | |
10338 | saw_eof = 0; | |
10339 | offset = 0; | |
10340 | while (bytes_in_buffer || !saw_eof) | |
10341 | { | |
10342 | if (!saw_eof) | |
10343 | { | |
3e43a32a MS |
10344 | bytes = fread (buffer + bytes_in_buffer, 1, |
10345 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10346 | file); |
10347 | if (bytes == 0) | |
10348 | { | |
10349 | if (ferror (file)) | |
10350 | error (_("Error reading %s."), local_file); | |
10351 | else | |
10352 | { | |
10353 | /* EOF. Unless there is something still in the | |
10354 | buffer from the last iteration, we are done. */ | |
10355 | saw_eof = 1; | |
10356 | if (bytes_in_buffer == 0) | |
10357 | break; | |
10358 | } | |
10359 | } | |
10360 | } | |
10361 | else | |
10362 | bytes = 0; | |
10363 | ||
10364 | bytes += bytes_in_buffer; | |
10365 | bytes_in_buffer = 0; | |
10366 | ||
0d866f62 TT |
10367 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10368 | fd, buffer, bytes, | |
3e43a32a | 10369 | offset, &remote_errno); |
a6b151f1 DJ |
10370 | |
10371 | if (retcode < 0) | |
10372 | remote_hostio_error (remote_errno); | |
10373 | else if (retcode == 0) | |
10374 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10375 | else if (retcode < bytes) | |
10376 | { | |
10377 | /* Short write. Save the rest of the read data for the next | |
10378 | write. */ | |
10379 | bytes_in_buffer = bytes - retcode; | |
10380 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10381 | } | |
10382 | ||
10383 | offset += retcode; | |
10384 | } | |
10385 | ||
10386 | discard_cleanups (close_cleanup); | |
df39ea25 | 10387 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10388 | remote_hostio_error (remote_errno); |
10389 | ||
10390 | if (from_tty) | |
10391 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10392 | do_cleanups (back_to); | |
10393 | } | |
10394 | ||
10395 | void | |
10396 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10397 | { | |
10398 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10399 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10400 | FILE *file; |
10401 | gdb_byte *buffer; | |
10402 | ULONGEST offset; | |
5d93a237 | 10403 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10404 | |
5d93a237 | 10405 | if (!rs->remote_desc) |
a6b151f1 DJ |
10406 | error (_("command can only be used with remote target")); |
10407 | ||
cd897586 TT |
10408 | fd = remote_hostio_open (find_target_at (process_stratum), |
10409 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
a6b151f1 DJ |
10410 | if (fd == -1) |
10411 | remote_hostio_error (remote_errno); | |
10412 | ||
614c279d | 10413 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10414 | if (file == NULL) |
10415 | perror_with_name (local_file); | |
7c8a8b04 | 10416 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10417 | |
10418 | /* Send up to this many bytes at once. They won't all fit in the | |
10419 | remote packet limit, so we'll transfer slightly fewer. */ | |
10420 | io_size = get_remote_packet_size (); | |
10421 | buffer = xmalloc (io_size); | |
10422 | make_cleanup (xfree, buffer); | |
10423 | ||
10424 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10425 | ||
10426 | offset = 0; | |
10427 | while (1) | |
10428 | { | |
a3be983c TT |
10429 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10430 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10431 | if (bytes == 0) |
10432 | /* Success, but no bytes, means end-of-file. */ | |
10433 | break; | |
10434 | if (bytes == -1) | |
10435 | remote_hostio_error (remote_errno); | |
10436 | ||
10437 | offset += bytes; | |
10438 | ||
10439 | bytes = fwrite (buffer, 1, bytes, file); | |
10440 | if (bytes == 0) | |
10441 | perror_with_name (local_file); | |
10442 | } | |
10443 | ||
10444 | discard_cleanups (close_cleanup); | |
df39ea25 | 10445 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10446 | remote_hostio_error (remote_errno); |
10447 | ||
10448 | if (from_tty) | |
10449 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10450 | do_cleanups (back_to); | |
10451 | } | |
10452 | ||
10453 | void | |
10454 | remote_file_delete (const char *remote_file, int from_tty) | |
10455 | { | |
10456 | int retcode, remote_errno; | |
5d93a237 | 10457 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10458 | |
5d93a237 | 10459 | if (!rs->remote_desc) |
a6b151f1 DJ |
10460 | error (_("command can only be used with remote target")); |
10461 | ||
dbbca37d TT |
10462 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
10463 | remote_file, &remote_errno); | |
a6b151f1 DJ |
10464 | if (retcode == -1) |
10465 | remote_hostio_error (remote_errno); | |
10466 | ||
10467 | if (from_tty) | |
10468 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10469 | } | |
10470 | ||
10471 | static void | |
10472 | remote_put_command (char *args, int from_tty) | |
10473 | { | |
10474 | struct cleanup *back_to; | |
10475 | char **argv; | |
10476 | ||
d1a41061 PP |
10477 | if (args == NULL) |
10478 | error_no_arg (_("file to put")); | |
10479 | ||
10480 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10481 | back_to = make_cleanup_freeargv (argv); |
10482 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10483 | error (_("Invalid parameters to remote put")); | |
10484 | ||
10485 | remote_file_put (argv[0], argv[1], from_tty); | |
10486 | ||
10487 | do_cleanups (back_to); | |
10488 | } | |
10489 | ||
10490 | static void | |
10491 | remote_get_command (char *args, int from_tty) | |
10492 | { | |
10493 | struct cleanup *back_to; | |
10494 | char **argv; | |
10495 | ||
d1a41061 PP |
10496 | if (args == NULL) |
10497 | error_no_arg (_("file to get")); | |
10498 | ||
10499 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10500 | back_to = make_cleanup_freeargv (argv); |
10501 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10502 | error (_("Invalid parameters to remote get")); | |
10503 | ||
10504 | remote_file_get (argv[0], argv[1], from_tty); | |
10505 | ||
10506 | do_cleanups (back_to); | |
10507 | } | |
10508 | ||
10509 | static void | |
10510 | remote_delete_command (char *args, int from_tty) | |
10511 | { | |
10512 | struct cleanup *back_to; | |
10513 | char **argv; | |
10514 | ||
d1a41061 PP |
10515 | if (args == NULL) |
10516 | error_no_arg (_("file to delete")); | |
10517 | ||
10518 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10519 | back_to = make_cleanup_freeargv (argv); |
10520 | if (argv[0] == NULL || argv[1] != NULL) | |
10521 | error (_("Invalid parameters to remote delete")); | |
10522 | ||
10523 | remote_file_delete (argv[0], from_tty); | |
10524 | ||
10525 | do_cleanups (back_to); | |
10526 | } | |
10527 | ||
10528 | static void | |
10529 | remote_command (char *args, int from_tty) | |
10530 | { | |
635c7e8a | 10531 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
10532 | } |
10533 | ||
b2175913 | 10534 | static int |
19db3e69 | 10535 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10536 | { |
4082afcc PA |
10537 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
10538 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
10539 | return 1; |
10540 | else | |
10541 | return 0; | |
b2175913 MS |
10542 | } |
10543 | ||
74531fed | 10544 | static int |
2a9a2795 | 10545 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10546 | { |
10547 | return 1; | |
10548 | } | |
10549 | ||
03583c20 | 10550 | static int |
2bfc0540 | 10551 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10552 | { |
10553 | /* Only supported in extended mode. */ | |
10554 | return 0; | |
10555 | } | |
10556 | ||
8a305172 | 10557 | static int |
86ce2668 | 10558 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10559 | { |
10560 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10561 | |
901f9912 UW |
10562 | /* Only extended-remote handles being attached to multiple |
10563 | processes, even though plain remote can use the multi-process | |
10564 | thread id extensions, so that GDB knows the target process's | |
10565 | PID. */ | |
10566 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10567 | } |
10568 | ||
70221824 | 10569 | static int |
782b2b07 SS |
10570 | remote_supports_cond_tracepoints (void) |
10571 | { | |
4082afcc | 10572 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
10573 | } |
10574 | ||
3788aec7 | 10575 | static int |
efcc2da7 | 10576 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 10577 | { |
4082afcc | 10578 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
10579 | } |
10580 | ||
70221824 | 10581 | static int |
7a697b8d SS |
10582 | remote_supports_fast_tracepoints (void) |
10583 | { | |
4082afcc | 10584 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
10585 | } |
10586 | ||
0fb4aa4b PA |
10587 | static int |
10588 | remote_supports_static_tracepoints (void) | |
10589 | { | |
4082afcc | 10590 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
10591 | } |
10592 | ||
1e4d1764 YQ |
10593 | static int |
10594 | remote_supports_install_in_trace (void) | |
10595 | { | |
4082afcc | 10596 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
10597 | } |
10598 | ||
d248b706 | 10599 | static int |
7d178d6a | 10600 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 10601 | { |
4082afcc PA |
10602 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
10603 | == PACKET_ENABLE); | |
d248b706 KY |
10604 | } |
10605 | ||
3065dfb6 | 10606 | static int |
6de37a3a | 10607 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 10608 | { |
4082afcc | 10609 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
10610 | } |
10611 | ||
d3ce09f5 | 10612 | static int |
78eff0ec | 10613 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 10614 | { |
4082afcc | 10615 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
10616 | } |
10617 | ||
35b1e5cc | 10618 | static void |
ecae04e1 | 10619 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
10620 | { |
10621 | putpkt ("QTinit"); | |
10622 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10623 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10624 | error (_("Target does not support this command.")); |
10625 | } | |
10626 | ||
10627 | static void free_actions_list (char **actions_list); | |
10628 | static void free_actions_list_cleanup_wrapper (void *); | |
10629 | static void | |
10630 | free_actions_list_cleanup_wrapper (void *al) | |
10631 | { | |
10632 | free_actions_list (al); | |
10633 | } | |
10634 | ||
10635 | static void | |
10636 | free_actions_list (char **actions_list) | |
10637 | { | |
10638 | int ndx; | |
10639 | ||
10640 | if (actions_list == 0) | |
10641 | return; | |
10642 | ||
10643 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10644 | xfree (actions_list[ndx]); | |
10645 | ||
10646 | xfree (actions_list); | |
10647 | } | |
10648 | ||
409873ef SS |
10649 | /* Recursive routine to walk through command list including loops, and |
10650 | download packets for each command. */ | |
10651 | ||
10652 | static void | |
10653 | remote_download_command_source (int num, ULONGEST addr, | |
10654 | struct command_line *cmds) | |
10655 | { | |
10656 | struct remote_state *rs = get_remote_state (); | |
10657 | struct command_line *cmd; | |
10658 | ||
10659 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10660 | { | |
0df8b418 | 10661 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10662 | strcpy (rs->buf, "QTDPsrc:"); |
10663 | encode_source_string (num, addr, "cmd", cmd->line, | |
10664 | rs->buf + strlen (rs->buf), | |
10665 | rs->buf_size - strlen (rs->buf)); | |
10666 | putpkt (rs->buf); | |
10667 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10668 | if (strcmp (target_buf, "OK")) | |
10669 | warning (_("Target does not support source download.")); | |
10670 | ||
10671 | if (cmd->control_type == while_control | |
10672 | || cmd->control_type == while_stepping_control) | |
10673 | { | |
10674 | remote_download_command_source (num, addr, *cmd->body_list); | |
10675 | ||
0df8b418 | 10676 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10677 | strcpy (rs->buf, "QTDPsrc:"); |
10678 | encode_source_string (num, addr, "cmd", "end", | |
10679 | rs->buf + strlen (rs->buf), | |
10680 | rs->buf_size - strlen (rs->buf)); | |
10681 | putpkt (rs->buf); | |
10682 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10683 | if (strcmp (target_buf, "OK")) | |
10684 | warning (_("Target does not support source download.")); | |
10685 | } | |
10686 | } | |
10687 | } | |
10688 | ||
35b1e5cc | 10689 | static void |
548f7808 | 10690 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 10691 | { |
bba74b36 | 10692 | #define BUF_SIZE 2048 |
e8ba3115 | 10693 | |
35b1e5cc | 10694 | CORE_ADDR tpaddr; |
409873ef | 10695 | char addrbuf[40]; |
bba74b36 | 10696 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10697 | char **tdp_actions; |
10698 | char **stepping_actions; | |
10699 | int ndx; | |
10700 | struct cleanup *old_chain = NULL; | |
10701 | struct agent_expr *aexpr; | |
10702 | struct cleanup *aexpr_chain = NULL; | |
10703 | char *pkt; | |
e8ba3115 | 10704 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10705 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10706 | |
dc673c81 | 10707 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
10708 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
10709 | tdp_actions); | |
10710 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10711 | stepping_actions); | |
10712 | ||
10713 | tpaddr = loc->address; | |
10714 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10715 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10716 | addrbuf, /* address */ | |
10717 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10718 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10719 | /* Fast tracepoints are mostly handled by the target, but we can |
10720 | tell the target how big of an instruction block should be moved | |
10721 | around. */ | |
10722 | if (b->type == bp_fast_tracepoint) | |
10723 | { | |
10724 | /* Only test for support at download time; we may not know | |
10725 | target capabilities at definition time. */ | |
10726 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10727 | { |
e8ba3115 | 10728 | int isize; |
35b1e5cc | 10729 | |
f5656ead | 10730 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10731 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10732 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10733 | isize); | |
35b1e5cc | 10734 | else |
e8ba3115 YQ |
10735 | /* If it passed validation at definition but fails now, |
10736 | something is very wrong. */ | |
10737 | internal_error (__FILE__, __LINE__, | |
10738 | _("Fast tracepoint not " | |
10739 | "valid during download")); | |
35b1e5cc | 10740 | } |
e8ba3115 YQ |
10741 | else |
10742 | /* Fast tracepoints are functionally identical to regular | |
10743 | tracepoints, so don't take lack of support as a reason to | |
10744 | give up on the trace run. */ | |
10745 | warning (_("Target does not support fast tracepoints, " | |
10746 | "downloading %d as regular tracepoint"), b->number); | |
10747 | } | |
10748 | else if (b->type == bp_static_tracepoint) | |
10749 | { | |
10750 | /* Only test for support at download time; we may not know | |
10751 | target capabilities at definition time. */ | |
10752 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10753 | { |
e8ba3115 | 10754 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10755 | |
e8ba3115 YQ |
10756 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10757 | strcat (buf, ":S"); | |
0fb4aa4b | 10758 | else |
e8ba3115 | 10759 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10760 | } |
e8ba3115 YQ |
10761 | else |
10762 | /* Fast tracepoints are functionally identical to regular | |
10763 | tracepoints, so don't take lack of support as a reason | |
10764 | to give up on the trace run. */ | |
10765 | error (_("Target does not support static tracepoints")); | |
10766 | } | |
10767 | /* If the tracepoint has a conditional, make it into an agent | |
10768 | expression and append to the definition. */ | |
10769 | if (loc->cond) | |
10770 | { | |
10771 | /* Only test support at download time, we may not know target | |
10772 | capabilities at definition time. */ | |
10773 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10774 | { |
e8ba3115 YQ |
10775 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10776 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10777 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10778 | aexpr->len); | |
e8ba3115 YQ |
10779 | pkt = buf + strlen (buf); |
10780 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10781 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10782 | *pkt = '\0'; | |
10783 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10784 | } |
e8ba3115 YQ |
10785 | else |
10786 | warning (_("Target does not support conditional tracepoints, " | |
10787 | "ignoring tp %d cond"), b->number); | |
10788 | } | |
35b1e5cc | 10789 | |
d9b3f62e | 10790 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10791 | strcat (buf, "-"); |
10792 | putpkt (buf); | |
10793 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10794 | if (strcmp (target_buf, "OK")) | |
10795 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10796 | |
e8ba3115 YQ |
10797 | /* do_single_steps (t); */ |
10798 | if (tdp_actions) | |
10799 | { | |
10800 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10801 | { |
e8ba3115 | 10802 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10803 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10804 | b->number, addrbuf, /* address */ | |
10805 | tdp_actions[ndx], | |
10806 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10807 | ? '-' : 0)); | |
e8ba3115 YQ |
10808 | putpkt (buf); |
10809 | remote_get_noisy_reply (&target_buf, | |
10810 | &target_buf_size); | |
10811 | if (strcmp (target_buf, "OK")) | |
10812 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10813 | } |
e8ba3115 YQ |
10814 | } |
10815 | if (stepping_actions) | |
10816 | { | |
10817 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10818 | { |
e8ba3115 | 10819 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10820 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10821 | b->number, addrbuf, /* address */ | |
10822 | ((ndx == 0) ? "S" : ""), | |
10823 | stepping_actions[ndx], | |
10824 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10825 | putpkt (buf); |
10826 | remote_get_noisy_reply (&target_buf, | |
10827 | &target_buf_size); | |
10828 | if (strcmp (target_buf, "OK")) | |
10829 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10830 | } |
e8ba3115 | 10831 | } |
409873ef | 10832 | |
4082afcc | 10833 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 YQ |
10834 | { |
10835 | if (b->addr_string) | |
409873ef | 10836 | { |
e8ba3115 YQ |
10837 | strcpy (buf, "QTDPsrc:"); |
10838 | encode_source_string (b->number, loc->address, | |
10839 | "at", b->addr_string, buf + strlen (buf), | |
10840 | 2048 - strlen (buf)); | |
409873ef | 10841 | |
e8ba3115 YQ |
10842 | putpkt (buf); |
10843 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10844 | if (strcmp (target_buf, "OK")) | |
10845 | warning (_("Target does not support source download.")); | |
409873ef | 10846 | } |
e8ba3115 YQ |
10847 | if (b->cond_string) |
10848 | { | |
10849 | strcpy (buf, "QTDPsrc:"); | |
10850 | encode_source_string (b->number, loc->address, | |
10851 | "cond", b->cond_string, buf + strlen (buf), | |
10852 | 2048 - strlen (buf)); | |
10853 | putpkt (buf); | |
10854 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10855 | if (strcmp (target_buf, "OK")) | |
10856 | warning (_("Target does not support source download.")); | |
10857 | } | |
10858 | remote_download_command_source (b->number, loc->address, | |
10859 | breakpoint_commands (b)); | |
35b1e5cc | 10860 | } |
e8ba3115 YQ |
10861 | |
10862 | do_cleanups (old_chain); | |
35b1e5cc SS |
10863 | } |
10864 | ||
1e4d1764 | 10865 | static int |
a52a8357 | 10866 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 10867 | { |
1e51243a PA |
10868 | struct remote_state *rs = get_remote_state (); |
10869 | struct trace_status *ts; | |
10870 | int status; | |
10871 | ||
10872 | /* Don't try to install tracepoints until we've relocated our | |
10873 | symbols, and fetched and merged the target's tracepoint list with | |
10874 | ours. */ | |
10875 | if (rs->starting_up) | |
10876 | return 0; | |
10877 | ||
10878 | ts = current_trace_status (); | |
8bd200f1 | 10879 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
10880 | |
10881 | if (status == -1 || !ts->running_known || !ts->running) | |
10882 | return 0; | |
10883 | ||
10884 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10885 | installing tracepoint in trace, we have to return. */ | |
10886 | if (!remote_supports_install_in_trace ()) | |
10887 | return 0; | |
10888 | ||
10889 | return 1; | |
10890 | } | |
10891 | ||
10892 | ||
35b1e5cc | 10893 | static void |
559d2b81 TT |
10894 | remote_download_trace_state_variable (struct target_ops *self, |
10895 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
10896 | { |
10897 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10898 | char *p; |
35b1e5cc | 10899 | |
bba74b36 YQ |
10900 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10901 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10902 | tsv->builtin); | |
00bf0b85 SS |
10903 | p = rs->buf + strlen (rs->buf); |
10904 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10905 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 10906 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 10907 | *p++ = '\0'; |
35b1e5cc SS |
10908 | putpkt (rs->buf); |
10909 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10910 | if (*target_buf == '\0') |
10911 | error (_("Target does not support this command.")); | |
10912 | if (strcmp (target_buf, "OK") != 0) | |
10913 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10914 | } |
10915 | ||
d248b706 | 10916 | static void |
46670d57 TT |
10917 | remote_enable_tracepoint (struct target_ops *self, |
10918 | struct bp_location *location) | |
d248b706 KY |
10919 | { |
10920 | struct remote_state *rs = get_remote_state (); | |
10921 | char addr_buf[40]; | |
10922 | ||
10923 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10924 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10925 | location->owner->number, addr_buf); | |
d248b706 KY |
10926 | putpkt (rs->buf); |
10927 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10928 | if (*rs->buf == '\0') | |
10929 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10930 | if (strcmp (rs->buf, "OK") != 0) | |
10931 | error (_("Error on target while enabling tracepoint.")); | |
10932 | } | |
10933 | ||
10934 | static void | |
780b049c TT |
10935 | remote_disable_tracepoint (struct target_ops *self, |
10936 | struct bp_location *location) | |
d248b706 KY |
10937 | { |
10938 | struct remote_state *rs = get_remote_state (); | |
10939 | char addr_buf[40]; | |
10940 | ||
10941 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10942 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10943 | location->owner->number, addr_buf); | |
d248b706 KY |
10944 | putpkt (rs->buf); |
10945 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10946 | if (*rs->buf == '\0') | |
10947 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10948 | if (strcmp (rs->buf, "OK") != 0) | |
10949 | error (_("Error on target while disabling tracepoint.")); | |
10950 | } | |
10951 | ||
35b1e5cc | 10952 | static void |
583f9a86 | 10953 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
10954 | { |
10955 | asection *s; | |
81b9b86e | 10956 | bfd *abfd = NULL; |
35b1e5cc | 10957 | bfd_size_type size; |
608bcef2 | 10958 | bfd_vma vma; |
35b1e5cc | 10959 | int anysecs = 0; |
c2fa21f1 | 10960 | int offset = 0; |
35b1e5cc SS |
10961 | |
10962 | if (!exec_bfd) | |
10963 | return; /* No information to give. */ | |
10964 | ||
10965 | strcpy (target_buf, "QTro"); | |
9779ab84 | 10966 | offset = strlen (target_buf); |
35b1e5cc SS |
10967 | for (s = exec_bfd->sections; s; s = s->next) |
10968 | { | |
10969 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10970 | int sec_length; |
35b1e5cc SS |
10971 | |
10972 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10973 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10974 | (s->flags & SEC_READONLY) == 0) |
10975 | continue; | |
10976 | ||
10977 | anysecs = 1; | |
81b9b86e | 10978 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10979 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10980 | sprintf_vma (tmp1, vma); |
10981 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10982 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10983 | if (offset + sec_length + 1 > target_buf_size) | |
10984 | { | |
4082afcc | 10985 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 10986 | warning (_("\ |
c2fa21f1 HZ |
10987 | Too many sections for read-only sections definition packet.")); |
10988 | break; | |
10989 | } | |
bba74b36 YQ |
10990 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10991 | tmp1, tmp2); | |
c2fa21f1 | 10992 | offset += sec_length; |
35b1e5cc SS |
10993 | } |
10994 | if (anysecs) | |
10995 | { | |
10996 | putpkt (target_buf); | |
10997 | getpkt (&target_buf, &target_buf_size, 0); | |
10998 | } | |
10999 | } | |
11000 | ||
11001 | static void | |
e2d1aae3 | 11002 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11003 | { |
11004 | putpkt ("QTStart"); | |
11005 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11006 | if (*target_buf == '\0') |
11007 | error (_("Target does not support this command.")); | |
11008 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11009 | error (_("Bogus reply from target: %s"), target_buf); |
11010 | } | |
11011 | ||
11012 | static int | |
8bd200f1 | 11013 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11014 | { |
953b98d1 | 11015 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11016 | char *p = NULL; |
0df8b418 | 11017 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11018 | extern int trace_regblock_size; |
bd3eecc3 PA |
11019 | enum packet_result result; |
11020 | ||
4082afcc | 11021 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11022 | return -1; |
a744cf53 | 11023 | |
00bf0b85 SS |
11024 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11025 | ||
049dc89b JK |
11026 | putpkt ("qTStatus"); |
11027 | ||
492d29ea | 11028 | TRY |
67f41397 JK |
11029 | { |
11030 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11031 | } | |
492d29ea | 11032 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11033 | { |
598d3636 JK |
11034 | if (ex.error != TARGET_CLOSE_ERROR) |
11035 | { | |
11036 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11037 | return -1; | |
11038 | } | |
11039 | throw_exception (ex); | |
67f41397 | 11040 | } |
492d29ea | 11041 | END_CATCH |
00bf0b85 | 11042 | |
bd3eecc3 PA |
11043 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11044 | ||
00bf0b85 | 11045 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11046 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11047 | return -1; |
35b1e5cc | 11048 | |
00bf0b85 | 11049 | /* We're working with a live target. */ |
f5911ea1 | 11050 | ts->filename = NULL; |
00bf0b85 | 11051 | |
00bf0b85 | 11052 | if (*p++ != 'T') |
35b1e5cc SS |
11053 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11054 | ||
84cebc4a YQ |
11055 | /* Function 'parse_trace_status' sets default value of each field of |
11056 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11057 | parse_trace_status (p, ts); |
11058 | ||
11059 | return ts->running; | |
35b1e5cc SS |
11060 | } |
11061 | ||
70221824 | 11062 | static void |
db90e85c | 11063 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11064 | struct uploaded_tp *utp) |
11065 | { | |
11066 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11067 | char *reply; |
11068 | struct bp_location *loc; | |
11069 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11070 | size_t size = get_remote_packet_size (); |
f196051f SS |
11071 | |
11072 | if (tp) | |
11073 | { | |
11074 | tp->base.hit_count = 0; | |
11075 | tp->traceframe_usage = 0; | |
11076 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11077 | { | |
11078 | /* If the tracepoint was never downloaded, don't go asking for | |
11079 | any status. */ | |
11080 | if (tp->number_on_target == 0) | |
11081 | continue; | |
bba74b36 YQ |
11082 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11083 | phex_nz (loc->address, 0)); | |
f196051f SS |
11084 | putpkt (rs->buf); |
11085 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11086 | if (reply && *reply) | |
11087 | { | |
11088 | if (*reply == 'V') | |
11089 | parse_tracepoint_status (reply + 1, bp, utp); | |
11090 | } | |
11091 | } | |
11092 | } | |
11093 | else if (utp) | |
11094 | { | |
11095 | utp->hit_count = 0; | |
11096 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11097 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11098 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11099 | putpkt (rs->buf); |
11100 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11101 | if (reply && *reply) | |
11102 | { | |
11103 | if (*reply == 'V') | |
11104 | parse_tracepoint_status (reply + 1, bp, utp); | |
11105 | } | |
11106 | } | |
11107 | } | |
11108 | ||
35b1e5cc | 11109 | static void |
74499f1b | 11110 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11111 | { |
11112 | putpkt ("QTStop"); | |
11113 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11114 | if (*target_buf == '\0') |
11115 | error (_("Target does not support this command.")); | |
11116 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11117 | error (_("Bogus reply from target: %s"), target_buf); |
11118 | } | |
11119 | ||
11120 | static int | |
bd4c6793 TT |
11121 | remote_trace_find (struct target_ops *self, |
11122 | enum trace_find_type type, int num, | |
cc5925ad | 11123 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11124 | int *tpp) |
11125 | { | |
11126 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11127 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11128 | char *p, *reply; |
11129 | int target_frameno = -1, target_tracept = -1; | |
11130 | ||
e6e4e701 PA |
11131 | /* Lookups other than by absolute frame number depend on the current |
11132 | trace selected, so make sure it is correct on the remote end | |
11133 | first. */ | |
11134 | if (type != tfind_number) | |
11135 | set_remote_traceframe (); | |
11136 | ||
35b1e5cc SS |
11137 | p = rs->buf; |
11138 | strcpy (p, "QTFrame:"); | |
11139 | p = strchr (p, '\0'); | |
11140 | switch (type) | |
11141 | { | |
11142 | case tfind_number: | |
bba74b36 | 11143 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11144 | break; |
11145 | case tfind_pc: | |
bba74b36 | 11146 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11147 | break; |
11148 | case tfind_tp: | |
bba74b36 | 11149 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11150 | break; |
11151 | case tfind_range: | |
bba74b36 YQ |
11152 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11153 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11154 | break; |
11155 | case tfind_outside: | |
bba74b36 YQ |
11156 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11157 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11158 | break; |
11159 | default: | |
9b20d036 | 11160 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11161 | } |
11162 | ||
11163 | putpkt (rs->buf); | |
2f65bcb7 | 11164 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11165 | if (*reply == '\0') |
11166 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11167 | |
11168 | while (reply && *reply) | |
11169 | switch (*reply) | |
11170 | { | |
11171 | case 'F': | |
f197e0f1 VP |
11172 | p = ++reply; |
11173 | target_frameno = (int) strtol (p, &reply, 16); | |
11174 | if (reply == p) | |
11175 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11176 | /* Don't update our remote traceframe number cache on failure |
11177 | to select a remote traceframe. */ | |
f197e0f1 VP |
11178 | if (target_frameno == -1) |
11179 | return -1; | |
35b1e5cc SS |
11180 | break; |
11181 | case 'T': | |
f197e0f1 VP |
11182 | p = ++reply; |
11183 | target_tracept = (int) strtol (p, &reply, 16); | |
11184 | if (reply == p) | |
11185 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11186 | break; |
11187 | case 'O': /* "OK"? */ | |
11188 | if (reply[1] == 'K' && reply[2] == '\0') | |
11189 | reply += 2; | |
11190 | else | |
11191 | error (_("Bogus reply from target: %s"), reply); | |
11192 | break; | |
11193 | default: | |
11194 | error (_("Bogus reply from target: %s"), reply); | |
11195 | } | |
11196 | if (tpp) | |
11197 | *tpp = target_tracept; | |
e6e4e701 | 11198 | |
262e1174 | 11199 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11200 | return target_frameno; |
11201 | } | |
11202 | ||
11203 | static int | |
4011015b TT |
11204 | remote_get_trace_state_variable_value (struct target_ops *self, |
11205 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11206 | { |
11207 | struct remote_state *rs = get_remote_state (); | |
11208 | char *reply; | |
11209 | ULONGEST uval; | |
11210 | ||
e6e4e701 PA |
11211 | set_remote_traceframe (); |
11212 | ||
bba74b36 | 11213 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11214 | putpkt (rs->buf); |
11215 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11216 | if (reply && *reply) | |
11217 | { | |
11218 | if (*reply == 'V') | |
11219 | { | |
11220 | unpack_varlen_hex (reply + 1, &uval); | |
11221 | *val = (LONGEST) uval; | |
11222 | return 1; | |
11223 | } | |
11224 | } | |
11225 | return 0; | |
11226 | } | |
11227 | ||
00bf0b85 | 11228 | static int |
dc3decaf | 11229 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
11230 | { |
11231 | struct remote_state *rs = get_remote_state (); | |
11232 | char *p, *reply; | |
11233 | ||
11234 | p = rs->buf; | |
11235 | strcpy (p, "QTSave:"); | |
11236 | p += strlen (p); | |
11237 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11238 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 11239 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
11240 | *p++ = '\0'; |
11241 | putpkt (rs->buf); | |
ad91cd99 | 11242 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11243 | if (*reply == '\0') |
ad91cd99 PA |
11244 | error (_("Target does not support this command.")); |
11245 | if (strcmp (reply, "OK") != 0) | |
11246 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11247 | return 0; |
11248 | } | |
11249 | ||
11250 | /* This is basically a memory transfer, but needs to be its own packet | |
11251 | because we don't know how the target actually organizes its trace | |
11252 | memory, plus we want to be able to ask for as much as possible, but | |
11253 | not be unhappy if we don't get as much as we ask for. */ | |
11254 | ||
11255 | static LONGEST | |
88ee6f45 TT |
11256 | remote_get_raw_trace_data (struct target_ops *self, |
11257 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
11258 | { |
11259 | struct remote_state *rs = get_remote_state (); | |
11260 | char *reply; | |
11261 | char *p; | |
11262 | int rslt; | |
11263 | ||
11264 | p = rs->buf; | |
11265 | strcpy (p, "qTBuffer:"); | |
11266 | p += strlen (p); | |
11267 | p += hexnumstr (p, offset); | |
11268 | *p++ = ','; | |
11269 | p += hexnumstr (p, len); | |
11270 | *p++ = '\0'; | |
11271 | ||
11272 | putpkt (rs->buf); | |
11273 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11274 | if (reply && *reply) | |
11275 | { | |
11276 | /* 'l' by itself means we're at the end of the buffer and | |
11277 | there is nothing more to get. */ | |
11278 | if (*reply == 'l') | |
11279 | return 0; | |
11280 | ||
11281 | /* Convert the reply into binary. Limit the number of bytes to | |
11282 | convert according to our passed-in buffer size, rather than | |
11283 | what was returned in the packet; if the target is | |
11284 | unexpectedly generous and gives us a bigger reply than we | |
11285 | asked for, we don't want to crash. */ | |
11286 | rslt = hex2bin (target_buf, buf, len); | |
11287 | return rslt; | |
11288 | } | |
11289 | ||
11290 | /* Something went wrong, flag as an error. */ | |
11291 | return -1; | |
11292 | } | |
11293 | ||
35b1e5cc | 11294 | static void |
37b25738 | 11295 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11296 | { |
11297 | struct remote_state *rs = get_remote_state (); | |
11298 | ||
4082afcc | 11299 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11300 | { |
ad91cd99 PA |
11301 | char *reply; |
11302 | ||
bba74b36 | 11303 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11304 | putpkt (rs->buf); |
ad91cd99 PA |
11305 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11306 | if (*reply == '\0') | |
33da3f1c | 11307 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11308 | if (strcmp (reply, "OK") != 0) |
11309 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11310 | } |
11311 | else if (val) | |
11312 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11313 | } |
11314 | ||
dc146f7c VP |
11315 | static int |
11316 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11317 | { | |
11318 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11319 | |
fe978cb0 PA |
11320 | if (info && info->priv) |
11321 | return info->priv->core; | |
dc146f7c VP |
11322 | return -1; |
11323 | } | |
11324 | ||
4daf5ac0 | 11325 | static void |
736d5b1f | 11326 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11327 | { |
11328 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11329 | char *reply; |
4daf5ac0 | 11330 | |
bba74b36 | 11331 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11332 | putpkt (rs->buf); |
ad91cd99 PA |
11333 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11334 | if (*reply == '\0') | |
4daf5ac0 | 11335 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11336 | if (strcmp (reply, "OK") != 0) |
11337 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11338 | } |
11339 | ||
b3b9301e | 11340 | static struct traceframe_info * |
a893e81f | 11341 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
11342 | { |
11343 | char *text; | |
11344 | ||
11345 | text = target_read_stralloc (¤t_target, | |
11346 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11347 | if (text != NULL) | |
11348 | { | |
11349 | struct traceframe_info *info; | |
11350 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11351 | ||
11352 | info = parse_traceframe_info (text); | |
11353 | do_cleanups (back_to); | |
11354 | return info; | |
11355 | } | |
11356 | ||
11357 | return NULL; | |
11358 | } | |
11359 | ||
405f8e94 SS |
11360 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11361 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11362 | if the packet is not supported, and 0 if the minimum instruction | |
11363 | length is unknown. */ | |
11364 | ||
11365 | static int | |
0e67620a | 11366 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
11367 | { |
11368 | struct remote_state *rs = get_remote_state (); | |
11369 | char *reply; | |
11370 | ||
e886a173 PA |
11371 | /* If we're not debugging a process yet, the IPA can't be |
11372 | loaded. */ | |
11373 | if (!target_has_execution) | |
11374 | return 0; | |
11375 | ||
11376 | /* Make sure the remote is pointing at the right process. */ | |
11377 | set_general_process (); | |
11378 | ||
bba74b36 | 11379 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11380 | putpkt (rs->buf); |
11381 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11382 | if (*reply == '\0') | |
11383 | return -1; | |
11384 | else | |
11385 | { | |
11386 | ULONGEST min_insn_len; | |
11387 | ||
11388 | unpack_varlen_hex (reply, &min_insn_len); | |
11389 | ||
11390 | return (int) min_insn_len; | |
11391 | } | |
11392 | } | |
11393 | ||
f6f899bf | 11394 | static void |
4da384be | 11395 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 11396 | { |
4082afcc | 11397 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
11398 | { |
11399 | struct remote_state *rs = get_remote_state (); | |
11400 | char *buf = rs->buf; | |
11401 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11402 | enum packet_result result; | |
11403 | ||
11404 | gdb_assert (val >= 0 || val == -1); | |
11405 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11406 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11407 | if (val < 0) | |
11408 | { | |
11409 | *buf++ = '-'; | |
11410 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11411 | } | |
11412 | else | |
11413 | buf += hexnumstr (buf, (ULONGEST) val); | |
11414 | ||
11415 | putpkt (rs->buf); | |
11416 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11417 | result = packet_ok (rs->buf, | |
11418 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11419 | ||
11420 | if (result != PACKET_OK) | |
11421 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11422 | } | |
11423 | } | |
11424 | ||
f196051f | 11425 | static int |
d9e68a2c TT |
11426 | remote_set_trace_notes (struct target_ops *self, |
11427 | const char *user, const char *notes, | |
ca623f82 | 11428 | const char *stop_notes) |
f196051f SS |
11429 | { |
11430 | struct remote_state *rs = get_remote_state (); | |
11431 | char *reply; | |
11432 | char *buf = rs->buf; | |
11433 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11434 | int nbytes; | |
11435 | ||
11436 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11437 | if (user) | |
11438 | { | |
11439 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11440 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11441 | buf += 2 * nbytes; |
11442 | *buf++ = ';'; | |
11443 | } | |
11444 | if (notes) | |
11445 | { | |
11446 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11447 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11448 | buf += 2 * nbytes; |
11449 | *buf++ = ';'; | |
11450 | } | |
11451 | if (stop_notes) | |
11452 | { | |
11453 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11454 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11455 | buf += 2 * nbytes; |
11456 | *buf++ = ';'; | |
11457 | } | |
11458 | /* Ensure the buffer is terminated. */ | |
11459 | *buf = '\0'; | |
11460 | ||
11461 | putpkt (rs->buf); | |
11462 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11463 | if (*reply == '\0') | |
11464 | return 0; | |
11465 | ||
11466 | if (strcmp (reply, "OK") != 0) | |
11467 | error (_("Bogus reply from target: %s"), reply); | |
11468 | ||
11469 | return 1; | |
11470 | } | |
11471 | ||
d1feda86 | 11472 | static int |
2c152180 | 11473 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 11474 | { |
4082afcc | 11475 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
11476 | { |
11477 | struct remote_state *rs = get_remote_state (); | |
11478 | ||
11479 | /* If the stub supports QAgent. */ | |
bba74b36 | 11480 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11481 | putpkt (rs->buf); |
11482 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11483 | ||
11484 | if (strcmp (rs->buf, "OK") == 0) | |
11485 | { | |
11486 | use_agent = use; | |
11487 | return 1; | |
11488 | } | |
11489 | } | |
11490 | ||
11491 | return 0; | |
11492 | } | |
11493 | ||
11494 | static int | |
fe38f897 | 11495 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 11496 | { |
4082afcc | 11497 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
11498 | } |
11499 | ||
9accd112 MM |
11500 | struct btrace_target_info |
11501 | { | |
11502 | /* The ptid of the traced thread. */ | |
11503 | ptid_t ptid; | |
f4abbc16 MM |
11504 | |
11505 | /* The obtained branch trace configuration. */ | |
11506 | struct btrace_config conf; | |
9accd112 MM |
11507 | }; |
11508 | ||
f4abbc16 MM |
11509 | /* Reset our idea of our target's btrace configuration. */ |
11510 | ||
11511 | static void | |
11512 | remote_btrace_reset (void) | |
11513 | { | |
11514 | struct remote_state *rs = get_remote_state (); | |
11515 | ||
11516 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
11517 | } | |
11518 | ||
9accd112 MM |
11519 | /* Check whether the target supports branch tracing. */ |
11520 | ||
11521 | static int | |
043c3577 | 11522 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 11523 | { |
4082afcc | 11524 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 11525 | return 0; |
4082afcc | 11526 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
11527 | return 0; |
11528 | ||
043c3577 MM |
11529 | switch (format) |
11530 | { | |
11531 | case BTRACE_FORMAT_NONE: | |
11532 | return 0; | |
11533 | ||
11534 | case BTRACE_FORMAT_BTS: | |
11535 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
11536 | } | |
11537 | ||
11538 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
11539 | } |
11540 | ||
f4abbc16 MM |
11541 | /* Synchronize the configuration with the target. */ |
11542 | ||
11543 | static void | |
11544 | btrace_sync_conf (const struct btrace_config *conf) | |
11545 | { | |
d33501a5 MM |
11546 | struct packet_config *packet; |
11547 | struct remote_state *rs; | |
11548 | char *buf, *pos, *endbuf; | |
11549 | ||
11550 | rs = get_remote_state (); | |
11551 | buf = rs->buf; | |
11552 | endbuf = buf + get_remote_packet_size (); | |
11553 | ||
11554 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
11555 | if (packet_config_support (packet) == PACKET_ENABLE | |
11556 | && conf->bts.size != rs->btrace_config.bts.size) | |
11557 | { | |
11558 | pos = buf; | |
11559 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
11560 | conf->bts.size); | |
11561 | ||
11562 | putpkt (buf); | |
11563 | getpkt (&buf, &rs->buf_size, 0); | |
11564 | ||
11565 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
11566 | { | |
11567 | if (buf[0] == 'E' && buf[1] == '.') | |
11568 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
11569 | else | |
11570 | error (_("Failed to configure the BTS buffer size.")); | |
11571 | } | |
11572 | ||
11573 | rs->btrace_config.bts.size = conf->bts.size; | |
11574 | } | |
f4abbc16 MM |
11575 | } |
11576 | ||
11577 | /* Read the current thread's btrace configuration from the target and | |
11578 | store it into CONF. */ | |
11579 | ||
11580 | static void | |
11581 | btrace_read_config (struct btrace_config *conf) | |
11582 | { | |
11583 | char *xml; | |
11584 | ||
11585 | xml = target_read_stralloc (¤t_target, | |
11586 | TARGET_OBJECT_BTRACE_CONF, ""); | |
11587 | if (xml != NULL) | |
11588 | { | |
11589 | struct cleanup *cleanup; | |
11590 | ||
11591 | cleanup = make_cleanup (xfree, xml); | |
11592 | parse_xml_btrace_conf (conf, xml); | |
11593 | do_cleanups (cleanup); | |
11594 | } | |
11595 | } | |
11596 | ||
9accd112 MM |
11597 | /* Enable branch tracing. */ |
11598 | ||
11599 | static struct btrace_target_info * | |
f4abbc16 MM |
11600 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
11601 | const struct btrace_config *conf) | |
9accd112 MM |
11602 | { |
11603 | struct btrace_target_info *tinfo = NULL; | |
11604 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
11605 | struct remote_state *rs = get_remote_state (); | |
11606 | char *buf = rs->buf; | |
11607 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11608 | ||
4082afcc | 11609 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11610 | error (_("Target does not support branch tracing.")); |
11611 | ||
f4abbc16 MM |
11612 | btrace_sync_conf (conf); |
11613 | ||
9accd112 MM |
11614 | set_general_thread (ptid); |
11615 | ||
11616 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11617 | putpkt (rs->buf); | |
11618 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11619 | ||
11620 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11621 | { | |
11622 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11623 | error (_("Could not enable branch tracing for %s: %s"), | |
11624 | target_pid_to_str (ptid), rs->buf + 2); | |
11625 | else | |
11626 | error (_("Could not enable branch tracing for %s."), | |
11627 | target_pid_to_str (ptid)); | |
11628 | } | |
11629 | ||
11630 | tinfo = xzalloc (sizeof (*tinfo)); | |
11631 | tinfo->ptid = ptid; | |
11632 | ||
f4abbc16 MM |
11633 | /* If we fail to read the configuration, we lose some information, but the |
11634 | tracing itself is not impacted. */ | |
492d29ea PA |
11635 | TRY |
11636 | { | |
11637 | btrace_read_config (&tinfo->conf); | |
11638 | } | |
11639 | CATCH (err, RETURN_MASK_ERROR) | |
11640 | { | |
11641 | if (err.message != NULL) | |
11642 | warning ("%s", err.message); | |
11643 | } | |
11644 | END_CATCH | |
f4abbc16 | 11645 | |
9accd112 MM |
11646 | return tinfo; |
11647 | } | |
11648 | ||
11649 | /* Disable branch tracing. */ | |
11650 | ||
11651 | static void | |
25e95349 TT |
11652 | remote_disable_btrace (struct target_ops *self, |
11653 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11654 | { |
11655 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
11656 | struct remote_state *rs = get_remote_state (); | |
11657 | char *buf = rs->buf; | |
11658 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11659 | ||
4082afcc | 11660 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11661 | error (_("Target does not support branch tracing.")); |
11662 | ||
11663 | set_general_thread (tinfo->ptid); | |
11664 | ||
11665 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
11666 | putpkt (rs->buf); | |
11667 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11668 | ||
11669 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
11670 | { | |
11671 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
11672 | error (_("Could not disable branch tracing for %s: %s"), | |
11673 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
11674 | else | |
11675 | error (_("Could not disable branch tracing for %s."), | |
11676 | target_pid_to_str (tinfo->ptid)); | |
11677 | } | |
11678 | ||
11679 | xfree (tinfo); | |
11680 | } | |
11681 | ||
11682 | /* Teardown branch tracing. */ | |
11683 | ||
11684 | static void | |
1777056d TT |
11685 | remote_teardown_btrace (struct target_ops *self, |
11686 | struct btrace_target_info *tinfo) | |
9accd112 MM |
11687 | { |
11688 | /* We must not talk to the target during teardown. */ | |
11689 | xfree (tinfo); | |
11690 | } | |
11691 | ||
11692 | /* Read the branch trace. */ | |
11693 | ||
969c39fb | 11694 | static enum btrace_error |
39c49f83 | 11695 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 11696 | struct btrace_data *btrace, |
969c39fb | 11697 | struct btrace_target_info *tinfo, |
9accd112 MM |
11698 | enum btrace_read_type type) |
11699 | { | |
11700 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
11701 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 11702 | struct cleanup *cleanup; |
9accd112 MM |
11703 | const char *annex; |
11704 | char *xml; | |
11705 | ||
4082afcc | 11706 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
11707 | error (_("Target does not support branch tracing.")); |
11708 | ||
11709 | #if !defined(HAVE_LIBEXPAT) | |
11710 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
11711 | #endif | |
11712 | ||
11713 | switch (type) | |
11714 | { | |
864089d2 | 11715 | case BTRACE_READ_ALL: |
9accd112 MM |
11716 | annex = "all"; |
11717 | break; | |
864089d2 | 11718 | case BTRACE_READ_NEW: |
9accd112 MM |
11719 | annex = "new"; |
11720 | break; | |
969c39fb MM |
11721 | case BTRACE_READ_DELTA: |
11722 | annex = "delta"; | |
11723 | break; | |
9accd112 MM |
11724 | default: |
11725 | internal_error (__FILE__, __LINE__, | |
11726 | _("Bad branch tracing read type: %u."), | |
11727 | (unsigned int) type); | |
11728 | } | |
11729 | ||
11730 | xml = target_read_stralloc (¤t_target, | |
11731 | TARGET_OBJECT_BTRACE, annex); | |
969c39fb MM |
11732 | if (xml == NULL) |
11733 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 11734 | |
969c39fb | 11735 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 11736 | parse_xml_btrace (btrace, xml); |
969c39fb | 11737 | do_cleanups (cleanup); |
9accd112 | 11738 | |
969c39fb | 11739 | return BTRACE_ERR_NONE; |
9accd112 MM |
11740 | } |
11741 | ||
f4abbc16 MM |
11742 | static const struct btrace_config * |
11743 | remote_btrace_conf (struct target_ops *self, | |
11744 | const struct btrace_target_info *tinfo) | |
11745 | { | |
11746 | return &tinfo->conf; | |
11747 | } | |
11748 | ||
ced63ec0 | 11749 | static int |
5436ff03 | 11750 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 11751 | { |
4082afcc PA |
11752 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
11753 | == PACKET_ENABLE); | |
ced63ec0 GB |
11754 | } |
11755 | ||
9dd130a0 TT |
11756 | /* Implementation of to_load. */ |
11757 | ||
11758 | static void | |
9cbe5fff | 11759 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
11760 | { |
11761 | generic_load (name, from_tty); | |
11762 | } | |
11763 | ||
c906108c | 11764 | static void |
fba45db2 | 11765 | init_remote_ops (void) |
c906108c | 11766 | { |
c5aa993b | 11767 | remote_ops.to_shortname = "remote"; |
c906108c | 11768 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11769 | remote_ops.to_doc = |
c906108c | 11770 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11771 | Specify the serial device it is connected to\n\ |
11772 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11773 | remote_ops.to_open = remote_open; |
11774 | remote_ops.to_close = remote_close; | |
c906108c | 11775 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11776 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11777 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11778 | remote_ops.to_wait = remote_wait; |
11779 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11780 | remote_ops.to_store_registers = remote_store_registers; | |
11781 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 11782 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11783 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11784 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
11785 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
11786 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
11787 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
11788 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
11789 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11790 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11791 | remote_ops.to_watchpoint_addr_within_range = |
11792 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11793 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11794 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11795 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11796 | remote_ops.to_region_ok_for_hw_watchpoint |
11797 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11798 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11799 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 11800 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 11801 | remote_ops.to_load = remote_load; |
c906108c | 11802 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11803 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11804 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11805 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 11806 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 11807 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11808 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11809 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11810 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11811 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11812 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11813 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11814 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11815 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11816 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11817 | remote_ops.to_has_memory = default_child_has_memory; | |
11818 | remote_ops.to_has_stack = default_child_has_stack; | |
11819 | remote_ops.to_has_registers = default_child_has_registers; | |
11820 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11821 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11822 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11823 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11824 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11825 | remote_ops.to_flash_erase = remote_flash_erase; |
11826 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11827 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11828 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11829 | remote_ops.to_can_async_p = remote_can_async_p; |
11830 | remote_ops.to_is_async_p = remote_is_async_p; | |
11831 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11832 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11833 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11834 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11835 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11836 | remote_ops.to_supports_disable_randomization |
11837 | = remote_supports_disable_randomization; | |
7313baad UW |
11838 | remote_ops.to_fileio_open = remote_hostio_open; |
11839 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11840 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11841 | remote_ops.to_fileio_close = remote_hostio_close; | |
11842 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11843 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11844 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11845 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11846 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11847 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11848 | remote_ops.to_trace_init = remote_trace_init; |
11849 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11850 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11851 | remote_ops.to_download_trace_state_variable |
11852 | = remote_download_trace_state_variable; | |
d248b706 KY |
11853 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11854 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11855 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11856 | remote_ops.to_trace_start = remote_trace_start; | |
11857 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11858 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11859 | remote_ops.to_trace_stop = remote_trace_stop; |
11860 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11861 | remote_ops.to_get_trace_state_variable_value |
11862 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11863 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11864 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11865 | remote_ops.to_upload_trace_state_variables |
11866 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11867 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11868 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11869 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11870 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 11871 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 11872 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11873 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11874 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11875 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11876 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11877 | remote_ops.to_static_tracepoint_marker_at |
11878 | = remote_static_tracepoint_marker_at; | |
11879 | remote_ops.to_static_tracepoint_markers_by_strid | |
11880 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11881 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11882 | remote_ops.to_use_agent = remote_use_agent; |
11883 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
11884 | remote_ops.to_supports_btrace = remote_supports_btrace; |
11885 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
11886 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
11887 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
11888 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 11889 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
11890 | remote_ops.to_augmented_libraries_svr4_read = |
11891 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
11892 | } |
11893 | ||
11894 | /* Set up the extended remote vector by making a copy of the standard | |
11895 | remote vector and adding to it. */ | |
11896 | ||
11897 | static void | |
fba45db2 | 11898 | init_extended_remote_ops (void) |
c906108c SS |
11899 | { |
11900 | extended_remote_ops = remote_ops; | |
11901 | ||
0f71a2f6 | 11902 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11903 | extended_remote_ops.to_longname = |
c906108c | 11904 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11905 | extended_remote_ops.to_doc = |
c906108c | 11906 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11907 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11908 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11909 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11910 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11911 | extended_remote_ops.to_detach = extended_remote_detach; |
11912 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 11913 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 11914 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11915 | extended_remote_ops.to_supports_disable_randomization |
11916 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11917 | } |
11918 | ||
6426a772 | 11919 | static int |
6a109b6b | 11920 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 11921 | { |
5d93a237 TT |
11922 | struct remote_state *rs = get_remote_state (); |
11923 | ||
c6ebd6cf | 11924 | if (!target_async_permitted) |
75c99385 PA |
11925 | /* We only enable async when the user specifically asks for it. */ |
11926 | return 0; | |
11927 | ||
23860348 | 11928 | /* We're async whenever the serial device is. */ |
5d93a237 | 11929 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
11930 | } |
11931 | ||
11932 | static int | |
6a109b6b | 11933 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 11934 | { |
5d93a237 TT |
11935 | struct remote_state *rs = get_remote_state (); |
11936 | ||
c6ebd6cf | 11937 | if (!target_async_permitted) |
75c99385 PA |
11938 | /* We only enable async when the user specifically asks for it. */ |
11939 | return 0; | |
11940 | ||
23860348 | 11941 | /* We're async whenever the serial device is. */ |
5d93a237 | 11942 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
11943 | } |
11944 | ||
2acceee2 JM |
11945 | /* Pass the SERIAL event on and up to the client. One day this code |
11946 | will be able to delay notifying the client of an event until the | |
23860348 | 11947 | point where an entire packet has been received. */ |
2acceee2 | 11948 | |
2acceee2 JM |
11949 | static serial_event_ftype remote_async_serial_handler; |
11950 | ||
6426a772 | 11951 | static void |
819cc324 | 11952 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11953 | { |
88b496c3 TT |
11954 | struct remote_state *rs = context; |
11955 | ||
2acceee2 JM |
11956 | /* Don't propogate error information up to the client. Instead let |
11957 | the client find out about the error by querying the target. */ | |
6a3753b3 | 11958 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
11959 | } |
11960 | ||
74531fed PA |
11961 | static void |
11962 | remote_async_inferior_event_handler (gdb_client_data data) | |
11963 | { | |
11964 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11965 | } | |
11966 | ||
2acceee2 | 11967 | static void |
6a3753b3 | 11968 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 11969 | { |
5d93a237 TT |
11970 | struct remote_state *rs = get_remote_state (); |
11971 | ||
6a3753b3 | 11972 | if (enable) |
2acceee2 | 11973 | { |
88b496c3 | 11974 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
11975 | |
11976 | /* If there are pending events in the stop reply queue tell the | |
11977 | event loop to process them. */ | |
11978 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
11979 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
11980 | } |
11981 | else | |
b7d2e916 PA |
11982 | { |
11983 | serial_async (rs->remote_desc, NULL, NULL); | |
11984 | clear_async_event_handler (remote_async_inferior_event_token); | |
11985 | } | |
6426a772 JM |
11986 | } |
11987 | ||
5a2468f5 | 11988 | static void |
c2d11a7d | 11989 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11990 | { |
635c7e8a | 11991 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
11992 | } |
11993 | ||
d471ea57 AC |
11994 | static void |
11995 | show_remote_cmd (char *args, int from_tty) | |
11996 | { | |
37a105a1 | 11997 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11998 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11999 | struct cleanup *showlist_chain; |
12000 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12001 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12002 | |
12003 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12004 | for (; list != NULL; list = list->next) | |
12005 | if (strcmp (list->name, "Z-packet") == 0) | |
12006 | continue; | |
427c3a89 DJ |
12007 | else if (list->type == not_set_cmd) |
12008 | /* Alias commands are exactly like the original, except they | |
12009 | don't have the normal type. */ | |
12010 | continue; | |
12011 | else | |
37a105a1 DJ |
12012 | { |
12013 | struct cleanup *option_chain | |
12014 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12015 | |
37a105a1 DJ |
12016 | ui_out_field_string (uiout, "name", list->name); |
12017 | ui_out_text (uiout, ": "); | |
427c3a89 | 12018 | if (list->type == show_cmd) |
5b9afe8a | 12019 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12020 | else |
12021 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12022 | /* Close the tuple. */ |
12023 | do_cleanups (option_chain); | |
12024 | } | |
427c3a89 DJ |
12025 | |
12026 | /* Close the tuple. */ | |
12027 | do_cleanups (showlist_chain); | |
d471ea57 | 12028 | } |
5a2468f5 | 12029 | |
0f71a2f6 | 12030 | |
23860348 | 12031 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12032 | static void |
12033 | remote_new_objfile (struct objfile *objfile) | |
12034 | { | |
5d93a237 TT |
12035 | struct remote_state *rs = get_remote_state (); |
12036 | ||
12037 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12038 | remote_check_symbols (); |
dc8acb97 MS |
12039 | } |
12040 | ||
00bf0b85 SS |
12041 | /* Pull all the tracepoints defined on the target and create local |
12042 | data structures representing them. We don't want to create real | |
12043 | tracepoints yet, we don't want to mess up the user's existing | |
12044 | collection. */ | |
12045 | ||
12046 | static int | |
ab6617cc | 12047 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12048 | { |
00bf0b85 SS |
12049 | struct remote_state *rs = get_remote_state (); |
12050 | char *p; | |
d5551862 | 12051 | |
00bf0b85 SS |
12052 | /* Ask for a first packet of tracepoint definition. */ |
12053 | putpkt ("qTfP"); | |
12054 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12055 | p = rs->buf; | |
12056 | while (*p && *p != 'l') | |
d5551862 | 12057 | { |
00bf0b85 SS |
12058 | parse_tracepoint_definition (p, utpp); |
12059 | /* Ask for another packet of tracepoint definition. */ | |
12060 | putpkt ("qTsP"); | |
12061 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12062 | p = rs->buf; | |
d5551862 | 12063 | } |
00bf0b85 | 12064 | return 0; |
d5551862 SS |
12065 | } |
12066 | ||
00bf0b85 | 12067 | static int |
181e3713 TT |
12068 | remote_upload_trace_state_variables (struct target_ops *self, |
12069 | struct uploaded_tsv **utsvp) | |
d5551862 | 12070 | { |
00bf0b85 | 12071 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12072 | char *p; |
d5551862 | 12073 | |
00bf0b85 SS |
12074 | /* Ask for a first packet of variable definition. */ |
12075 | putpkt ("qTfV"); | |
d5551862 SS |
12076 | getpkt (&rs->buf, &rs->buf_size, 0); |
12077 | p = rs->buf; | |
00bf0b85 | 12078 | while (*p && *p != 'l') |
d5551862 | 12079 | { |
00bf0b85 SS |
12080 | parse_tsv_definition (p, utsvp); |
12081 | /* Ask for another packet of variable definition. */ | |
12082 | putpkt ("qTsV"); | |
d5551862 SS |
12083 | getpkt (&rs->buf, &rs->buf_size, 0); |
12084 | p = rs->buf; | |
12085 | } | |
00bf0b85 | 12086 | return 0; |
d5551862 SS |
12087 | } |
12088 | ||
c1e36e3e PA |
12089 | /* The "set/show range-stepping" show hook. */ |
12090 | ||
12091 | static void | |
12092 | show_range_stepping (struct ui_file *file, int from_tty, | |
12093 | struct cmd_list_element *c, | |
12094 | const char *value) | |
12095 | { | |
12096 | fprintf_filtered (file, | |
12097 | _("Debugger's willingness to use range stepping " | |
12098 | "is %s.\n"), value); | |
12099 | } | |
12100 | ||
12101 | /* The "set/show range-stepping" set hook. */ | |
12102 | ||
12103 | static void | |
12104 | set_range_stepping (char *ignore_args, int from_tty, | |
12105 | struct cmd_list_element *c) | |
12106 | { | |
5d93a237 TT |
12107 | struct remote_state *rs = get_remote_state (); |
12108 | ||
c1e36e3e PA |
12109 | /* Whene enabling, check whether range stepping is actually |
12110 | supported by the target, and warn if not. */ | |
12111 | if (use_range_stepping) | |
12112 | { | |
5d93a237 | 12113 | if (rs->remote_desc != NULL) |
c1e36e3e | 12114 | { |
4082afcc | 12115 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12116 | remote_vcont_probe (rs); |
12117 | ||
4082afcc | 12118 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12119 | && rs->supports_vCont.r) |
12120 | return; | |
12121 | } | |
12122 | ||
12123 | warning (_("Range stepping is not supported by the current target")); | |
12124 | } | |
12125 | } | |
12126 | ||
c906108c | 12127 | void |
fba45db2 | 12128 | _initialize_remote (void) |
c906108c | 12129 | { |
ea9c271d | 12130 | struct remote_state *rs; |
9a7071a8 | 12131 | struct cmd_list_element *cmd; |
6f937416 | 12132 | const char *cmd_name; |
ea9c271d | 12133 | |
0f71a2f6 | 12134 | /* architecture specific data */ |
2bc416ba | 12135 | remote_gdbarch_data_handle = |
23860348 | 12136 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
12137 | remote_g_packet_data_handle = |
12138 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 12139 | |
ea9c271d DJ |
12140 | /* Initialize the per-target state. At the moment there is only one |
12141 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
12142 | time. */ |
12143 | remote_state = new_remote_state (); | |
ea9c271d | 12144 | |
c906108c SS |
12145 | init_remote_ops (); |
12146 | add_target (&remote_ops); | |
12147 | ||
12148 | init_extended_remote_ops (); | |
12149 | add_target (&extended_remote_ops); | |
cce74817 | 12150 | |
dc8acb97 | 12151 | /* Hook into new objfile notification. */ |
06d3b283 | 12152 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
12153 | /* We're no longer interested in notification events of an inferior |
12154 | when it exits. */ | |
12155 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 12156 | |
b803fb0f | 12157 | /* Set up signal handlers. */ |
934b9bac | 12158 | async_sigint_remote_token = |
b803fb0f | 12159 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 12160 | async_sigint_remote_twice_token = |
6d549500 | 12161 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 12162 | |
c906108c SS |
12163 | #if 0 |
12164 | init_remote_threadtests (); | |
12165 | #endif | |
12166 | ||
722247f1 | 12167 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 12168 | /* set/show remote ... */ |
d471ea57 | 12169 | |
1bedd215 | 12170 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
12171 | Remote protocol specific variables\n\ |
12172 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12173 | the packets being used"), |
cff3e48b | 12174 | &remote_set_cmdlist, "set remote ", |
23860348 | 12175 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 12176 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
12177 | Remote protocol specific variables\n\ |
12178 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12179 | the packets being used"), |
cff3e48b | 12180 | &remote_show_cmdlist, "show remote ", |
23860348 | 12181 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 12182 | |
1a966eab AC |
12183 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
12184 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
12185 | Argument is a single section name (default: all loaded sections).\n\ |
12186 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
12187 | &cmdlist); |
12188 | ||
1a966eab AC |
12189 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
12190 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
12191 | maintenance packet TEXT\n\ |
12192 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12193 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12194 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 12195 | terminating `#' character and checksum."), |
c906108c SS |
12196 | &maintenancelist); |
12197 | ||
7915a72c AC |
12198 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
12199 | Set whether to send break if interrupted."), _("\ | |
12200 | Show whether to send break if interrupted."), _("\ | |
12201 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 12202 | set_remotebreak, show_remotebreak, |
e707bbc2 | 12203 | &setlist, &showlist); |
9a7071a8 JB |
12204 | cmd_name = "remotebreak"; |
12205 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12206 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12207 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12208 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12209 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12210 | ||
12211 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
12212 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12213 | _("\ | |
9a7071a8 JB |
12214 | Set interrupt sequence to remote target."), _("\ |
12215 | Show interrupt sequence to remote target."), _("\ | |
12216 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12217 | NULL, show_interrupt_sequence, | |
12218 | &remote_set_cmdlist, | |
12219 | &remote_show_cmdlist); | |
12220 | ||
12221 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12222 | &interrupt_on_connect, _("\ | |
12223 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12224 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12225 | If set, interrupt sequence is sent to remote target."), | |
12226 | NULL, NULL, | |
12227 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 12228 | |
23860348 | 12229 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 12230 | |
1a966eab AC |
12231 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
12232 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 12233 | &setlist); |
1a966eab AC |
12234 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
12235 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
12236 | &showlist); |
12237 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
12238 | set_memory_write_packet_size, _("\ |
12239 | Set the maximum number of bytes per memory-write packet.\n\ | |
12240 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12241 | default packet size. The actual limit is further reduced\n\ | |
12242 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12243 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12244 | &remote_set_cmdlist); |
12245 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12246 | set_memory_read_packet_size, _("\ |
12247 | Set the maximum number of bytes per memory-read packet.\n\ | |
12248 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12249 | default packet size. The actual limit is further reduced\n\ | |
12250 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12251 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12252 | &remote_set_cmdlist); |
12253 | add_cmd ("memory-write-packet-size", no_class, | |
12254 | show_memory_write_packet_size, | |
1a966eab | 12255 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12256 | &remote_show_cmdlist); |
12257 | add_cmd ("memory-read-packet-size", no_class, | |
12258 | show_memory_read_packet_size, | |
1a966eab | 12259 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12260 | &remote_show_cmdlist); |
c906108c | 12261 | |
b3f42336 | 12262 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12263 | &remote_hw_watchpoint_limit, _("\ |
12264 | Set the maximum number of target hardware watchpoints."), _("\ | |
12265 | Show the maximum number of target hardware watchpoints."), _("\ | |
12266 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12267 | NULL, NULL, /* FIXME: i18n: The maximum |
12268 | number of target hardware | |
12269 | watchpoints is %s. */ | |
b3f42336 | 12270 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12271 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12272 | &remote_hw_watchpoint_length_limit, _("\ | |
12273 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12274 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12275 | Specify a negative limit for unlimited."), | |
12276 | NULL, NULL, /* FIXME: i18n: The maximum | |
12277 | length (in bytes) of a target | |
12278 | hardware watchpoint is %s. */ | |
12279 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12280 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12281 | &remote_hw_breakpoint_limit, _("\ |
12282 | Set the maximum number of target hardware breakpoints."), _("\ | |
12283 | Show the maximum number of target hardware breakpoints."), _("\ | |
12284 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12285 | NULL, NULL, /* FIXME: i18n: The maximum |
12286 | number of target hardware | |
12287 | breakpoints is %s. */ | |
b3f42336 | 12288 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12289 | |
1b493192 PA |
12290 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12291 | &remote_address_size, _("\ | |
4d28ad1e AC |
12292 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12293 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12294 | NULL, |
12295 | NULL, /* FIXME: i18n: */ | |
12296 | &setlist, &showlist); | |
c906108c | 12297 | |
ca4f7f8b PA |
12298 | init_all_packet_configs (); |
12299 | ||
444abaca | 12300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12301 | "X", "binary-download", 1); |
0f71a2f6 | 12302 | |
444abaca | 12303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12304 | "vCont", "verbose-resume", 0); |
506fb367 | 12305 | |
89be2091 DJ |
12306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12307 | "QPassSignals", "pass-signals", 0); | |
12308 | ||
9b224c5e PA |
12309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12310 | "QProgramSignals", "program-signals", 0); | |
12311 | ||
444abaca | 12312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12313 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12314 | |
444abaca | 12315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12316 | "P", "set-register", 1); |
d471ea57 | 12317 | |
444abaca | 12318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12319 | "p", "fetch-register", 1); |
b96ec7ac | 12320 | |
444abaca | 12321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12322 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12323 | |
444abaca | 12324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12325 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12326 | |
444abaca | 12327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12328 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12329 | |
444abaca | 12330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12331 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12332 | |
444abaca | 12333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12334 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12335 | |
0876f84a DJ |
12336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12337 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12338 | |
23181151 DJ |
12339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12340 | "qXfer:features:read", "target-features", 0); | |
12341 | ||
cfa9d6d9 DJ |
12342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12343 | "qXfer:libraries:read", "library-info", 0); | |
12344 | ||
2268b414 JK |
12345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12346 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12347 | ||
fd79ecee DJ |
12348 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12349 | "qXfer:memory-map:read", "memory-map", 0); | |
12350 | ||
0e7f50da UW |
12351 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12352 | "qXfer:spu:read", "read-spu-object", 0); | |
12353 | ||
12354 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12355 | "qXfer:spu:write", "write-spu-object", 0); | |
12356 | ||
07e059b5 VP |
12357 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12358 | "qXfer:osdata:read", "osdata", 0); | |
12359 | ||
dc146f7c VP |
12360 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12361 | "qXfer:threads:read", "threads", 0); | |
12362 | ||
4aa995e1 PA |
12363 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12364 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12365 | ||
12366 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12367 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12368 | ||
b3b9301e PA |
12369 | add_packet_config_cmd |
12370 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12371 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12372 | |
169081d0 TG |
12373 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12374 | "qXfer:uib:read", "unwind-info-block", 0); | |
12375 | ||
444abaca | 12376 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12377 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12378 | 0); |
12379 | ||
711e434b PM |
12380 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12381 | "qGetTIBAddr", "get-thread-information-block-address", | |
12382 | 0); | |
12383 | ||
40ab02ce MS |
12384 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12385 | "bc", "reverse-continue", 0); | |
12386 | ||
12387 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12388 | "bs", "reverse-step", 0); | |
12389 | ||
be2a5f71 DJ |
12390 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12391 | "qSupported", "supported-packets", 0); | |
12392 | ||
08388c79 DE |
12393 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12394 | "qSearch:memory", "search-memory", 0); | |
12395 | ||
bd3eecc3 PA |
12396 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12397 | "qTStatus", "trace-status", 0); | |
12398 | ||
a6b151f1 DJ |
12399 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12400 | "vFile:open", "hostio-open", 0); | |
12401 | ||
12402 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12403 | "vFile:pread", "hostio-pread", 0); | |
12404 | ||
12405 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12406 | "vFile:pwrite", "hostio-pwrite", 0); | |
12407 | ||
12408 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12409 | "vFile:close", "hostio-close", 0); | |
12410 | ||
12411 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12412 | "vFile:unlink", "hostio-unlink", 0); | |
12413 | ||
b9e7b9c3 UW |
12414 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12415 | "vFile:readlink", "hostio-readlink", 0); | |
12416 | ||
0a93529c GB |
12417 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
12418 | "vFile:fstat", "hostio-fstat", 0); | |
12419 | ||
2d717e4f DJ |
12420 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12421 | "vAttach", "attach", 0); | |
12422 | ||
12423 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12424 | "vRun", "run", 0); | |
12425 | ||
a6f3e723 SL |
12426 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12427 | "QStartNoAckMode", "noack", 0); | |
12428 | ||
82f73884 PA |
12429 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12430 | "vKill", "kill", 0); | |
12431 | ||
0b16c5cf PA |
12432 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12433 | "qAttached", "query-attached", 0); | |
12434 | ||
782b2b07 | 12435 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12436 | "ConditionalTracepoints", |
12437 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12438 | |
12439 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12440 | "ConditionalBreakpoints", | |
12441 | "conditional-breakpoints", 0); | |
12442 | ||
d3ce09f5 SS |
12443 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12444 | "BreakpointCommands", | |
12445 | "breakpoint-commands", 0); | |
12446 | ||
7a697b8d SS |
12447 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12448 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12449 | |
409873ef SS |
12450 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12451 | "TracepointSource", "TracepointSource", 0); | |
12452 | ||
d914c394 SS |
12453 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12454 | "QAllow", "allow", 0); | |
12455 | ||
0fb4aa4b PA |
12456 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12457 | "StaticTracepoints", "static-tracepoints", 0); | |
12458 | ||
1e4d1764 YQ |
12459 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12460 | "InstallInTrace", "install-in-trace", 0); | |
12461 | ||
0fb4aa4b PA |
12462 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12463 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12464 | ||
78d85199 YQ |
12465 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12466 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12467 | ||
03583c20 UW |
12468 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12469 | "QDisableRandomization", "disable-randomization", 0); | |
12470 | ||
d1feda86 YQ |
12471 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12472 | "QAgent", "agent", 0); | |
12473 | ||
f6f899bf HAQ |
12474 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12475 | "QTBuffer:size", "trace-buffer-size", 0); | |
12476 | ||
9accd112 MM |
12477 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12478 | "Qbtrace:off", "disable-btrace", 0); | |
12479 | ||
12480 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
12481 | "Qbtrace:bts", "enable-btrace", 0); | |
12482 | ||
12483 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12484 | "qXfer:btrace", "read-btrace", 0); | |
12485 | ||
f4abbc16 MM |
12486 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
12487 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
12488 | ||
d33501a5 MM |
12489 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
12490 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
12491 | ||
f7e6eed5 PA |
12492 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
12493 | "swbreak-feature", "swbreak-feature", 0); | |
12494 | ||
12495 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
12496 | "hwbreak-feature", "hwbreak-feature", 0); | |
12497 | ||
ca4f7f8b PA |
12498 | /* Assert that we've registered commands for all packet configs. */ |
12499 | { | |
12500 | int i; | |
12501 | ||
12502 | for (i = 0; i < PACKET_MAX; i++) | |
12503 | { | |
12504 | /* Ideally all configs would have a command associated. Some | |
12505 | still don't though. */ | |
12506 | int excepted; | |
12507 | ||
12508 | switch (i) | |
12509 | { | |
12510 | case PACKET_QNonStop: | |
12511 | case PACKET_multiprocess_feature: | |
12512 | case PACKET_EnableDisableTracepoints_feature: | |
12513 | case PACKET_tracenz_feature: | |
12514 | case PACKET_DisconnectedTracing_feature: | |
12515 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
12516 | case PACKET_qCRC: |
12517 | /* Additions to this list need to be well justified: | |
12518 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
12519 | excepted = 1; |
12520 | break; | |
12521 | default: | |
12522 | excepted = 0; | |
12523 | break; | |
12524 | } | |
12525 | ||
12526 | /* This catches both forgetting to add a config command, and | |
12527 | forgetting to remove a packet from the exception list. */ | |
12528 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
12529 | } | |
12530 | } | |
12531 | ||
37a105a1 DJ |
12532 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
12533 | Z sub-packet has its own set and show commands, but users may | |
12534 | have sets to this variable in their .gdbinit files (or in their | |
12535 | documentation). */ | |
e9e68a56 | 12536 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
12537 | &remote_Z_packet_detect, _("\ |
12538 | Set use of remote protocol `Z' packets"), _("\ | |
12539 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 12540 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 12541 | packets."), |
e9e68a56 | 12542 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
12543 | show_remote_protocol_Z_packet_cmd, |
12544 | /* FIXME: i18n: Use of remote protocol | |
12545 | `Z' packets is %s. */ | |
e9e68a56 | 12546 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 12547 | |
a6b151f1 DJ |
12548 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
12549 | Manipulate files on the remote system\n\ | |
12550 | Transfer files to and from the remote target system."), | |
12551 | &remote_cmdlist, "remote ", | |
12552 | 0 /* allow-unknown */, &cmdlist); | |
12553 | ||
12554 | add_cmd ("put", class_files, remote_put_command, | |
12555 | _("Copy a local file to the remote system."), | |
12556 | &remote_cmdlist); | |
12557 | ||
12558 | add_cmd ("get", class_files, remote_get_command, | |
12559 | _("Copy a remote file to the local system."), | |
12560 | &remote_cmdlist); | |
12561 | ||
12562 | add_cmd ("delete", class_files, remote_delete_command, | |
12563 | _("Delete a remote file."), | |
12564 | &remote_cmdlist); | |
12565 | ||
2d717e4f DJ |
12566 | remote_exec_file = xstrdup (""); |
12567 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
12568 | &remote_exec_file, _("\ | |
12569 | Set the remote pathname for \"run\""), _("\ | |
12570 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
12571 | &remote_set_cmdlist, &remote_show_cmdlist); | |
12572 | ||
c1e36e3e PA |
12573 | add_setshow_boolean_cmd ("range-stepping", class_run, |
12574 | &use_range_stepping, _("\ | |
12575 | Enable or disable range stepping."), _("\ | |
12576 | Show whether target-assisted range stepping is enabled."), _("\ | |
12577 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
12578 | tells the target to step the corresponding range of addresses itself instead\n\ | |
12579 | of issuing multiple single-steps. This speeds up source level\n\ | |
12580 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
12581 | stepping is supported by the target. The default is on."), | |
12582 | set_range_stepping, | |
12583 | show_range_stepping, | |
12584 | &setlist, | |
12585 | &showlist); | |
12586 | ||
449092f6 CV |
12587 | /* Eventually initialize fileio. See fileio.c */ |
12588 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 12589 | |
ba348170 | 12590 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 12591 | special ptids with it set to != 0. */ |
ba348170 PA |
12592 | magic_null_ptid = ptid_build (42000, -1, 1); |
12593 | not_sent_ptid = ptid_build (42000, -2, 1); | |
12594 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
12595 | |
12596 | target_buf_size = 2048; | |
12597 | target_buf = xmalloc (target_buf_size); | |
c906108c | 12598 | } |
10760264 | 12599 |