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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
c906108c | 48 | |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
53ce3c39 | 62 | #include <sys/stat.h> |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
d1feda86 | 70 | #include "agent.h" |
9accd112 | 71 | #include "btrace.h" |
35b1e5cc | 72 | |
0df8b418 | 73 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
74 | static char *target_buf; |
75 | static long target_buf_size; | |
35b1e5cc | 76 | |
6765f3e5 DJ |
77 | /* The size to align memory write packets, when practical. The protocol |
78 | does not guarantee any alignment, and gdb will generate short | |
79 | writes and unaligned writes, but even as a best-effort attempt this | |
80 | can improve bulk transfers. For instance, if a write is misaligned | |
81 | relative to the target's data bus, the stub may need to make an extra | |
82 | round trip fetching data from the target. This doesn't make a | |
83 | huge difference, but it's easy to do, so we try to be helpful. | |
84 | ||
85 | The alignment chosen is arbitrary; usually data bus width is | |
86 | important here, not the possibly larger cache line size. */ | |
87 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
88 | ||
23860348 | 89 | /* Prototypes for local functions. */ |
934b9bac | 90 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 91 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 92 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 93 | int forever, int *is_notif); |
6426a772 | 94 | |
934b9bac JK |
95 | static void async_handle_remote_sigint (int); |
96 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 97 | |
a14ed312 | 98 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 99 | |
f32dbf8c MM |
100 | static void remote_prepare_to_store (struct target_ops *self, |
101 | struct regcache *regcache); | |
c906108c | 102 | |
014f9477 TT |
103 | static void remote_open_1 (const char *, int, struct target_ops *, |
104 | int extended_p); | |
c906108c | 105 | |
de90e03d | 106 | static void remote_close (struct target_ops *self); |
c906108c | 107 | |
cbb8991c DB |
108 | struct remote_state; |
109 | ||
110 | static int remote_vkill (int pid, struct remote_state *rs); | |
111 | ||
136d6dae | 112 | static void remote_mourn (struct target_ops *ops); |
c906108c | 113 | |
a14ed312 | 114 | static void extended_remote_restart (void); |
c906108c | 115 | |
136d6dae | 116 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 117 | |
6d820c5c | 118 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 119 | |
a14ed312 | 120 | static int readchar (int timeout); |
c906108c | 121 | |
c33e31fd PA |
122 | static void remote_serial_write (const char *str, int len); |
123 | ||
7d85a9c0 | 124 | static void remote_kill (struct target_ops *ops); |
c906108c | 125 | |
6a109b6b | 126 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 127 | |
6a109b6b | 128 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 129 | |
6a3753b3 | 130 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 131 | |
934b9bac | 132 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 133 | |
a14ed312 | 134 | static void interrupt_query (void); |
c906108c | 135 | |
79d7f229 PA |
136 | static void set_general_thread (struct ptid ptid); |
137 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 138 | |
a14ed312 | 139 | static void get_offsets (void); |
c906108c | 140 | |
6d820c5c DJ |
141 | static void skip_frame (void); |
142 | ||
143 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 144 | |
a14ed312 | 145 | static int hexnumlen (ULONGEST num); |
c906108c | 146 | |
a14ed312 | 147 | static void init_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void init_extended_remote_ops (void); |
c906108c | 150 | |
1eab8a48 | 151 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 152 | |
a14ed312 | 153 | static int stubhex (int ch); |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumstr (char *, ULONGEST); |
c906108c | 156 | |
a14ed312 | 157 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 158 | |
a14ed312 | 159 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 160 | |
baa336ce | 161 | static void print_packet (const char *); |
c906108c | 162 | |
a14ed312 | 163 | static void compare_sections_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void packet_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 168 | |
39f77062 | 169 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 170 | |
baa336ce | 171 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 172 | |
a14ed312 | 173 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 174 | |
5a2468f5 | 175 | struct packet_config; |
5a2468f5 | 176 | |
a14ed312 | 177 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 178 | |
bb572ddd DJ |
179 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
180 | int from_tty, | |
181 | struct cmd_list_element *c, | |
182 | const char *value); | |
183 | ||
82f73884 PA |
184 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
185 | static ptid_t read_ptid (char *buf, char **obuf); | |
186 | ||
c378d69d | 187 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 188 | |
8bd200f1 TT |
189 | static int remote_get_trace_status (struct target_ops *self, |
190 | struct trace_status *ts); | |
d5551862 | 191 | |
ab6617cc TT |
192 | static int remote_upload_tracepoints (struct target_ops *self, |
193 | struct uploaded_tp **utpp); | |
00bf0b85 | 194 | |
181e3713 TT |
195 | static int remote_upload_trace_state_variables (struct target_ops *self, |
196 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 197 | |
c8d104ad PA |
198 | static void remote_query_supported (void); |
199 | ||
36d25514 | 200 | static void remote_check_symbols (void); |
c8d104ad | 201 | |
a14ed312 | 202 | void _initialize_remote (void); |
c906108c | 203 | |
74531fed | 204 | struct stop_reply; |
74531fed | 205 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 206 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 207 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 208 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
209 | static int peek_stop_reply (ptid_t ptid); |
210 | ||
cbb8991c DB |
211 | struct threads_listing_context; |
212 | static void remove_new_fork_children (struct threads_listing_context *); | |
213 | ||
74531fed | 214 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 215 | |
e3594fd1 | 216 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 217 | |
d962ef82 DJ |
218 | static int remote_read_description_p (struct target_ops *target); |
219 | ||
176a6961 | 220 | static void remote_console_output (char *msg); |
dde08ee1 | 221 | |
efcc2da7 | 222 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 223 | |
78eff0ec | 224 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 225 | |
f4abbc16 MM |
226 | static void remote_btrace_reset (void); |
227 | ||
a6b151f1 DJ |
228 | /* For "remote". */ |
229 | ||
230 | static struct cmd_list_element *remote_cmdlist; | |
231 | ||
bb572ddd DJ |
232 | /* For "set remote" and "show remote". */ |
233 | ||
234 | static struct cmd_list_element *remote_set_cmdlist; | |
235 | static struct cmd_list_element *remote_show_cmdlist; | |
236 | ||
d458bd84 PA |
237 | /* Stub vCont actions support. |
238 | ||
239 | Each field is a boolean flag indicating whether the stub reports | |
240 | support for the corresponding action. */ | |
241 | ||
242 | struct vCont_action_support | |
243 | { | |
244 | /* vCont;t */ | |
245 | int t; | |
c1e36e3e PA |
246 | |
247 | /* vCont;r */ | |
248 | int r; | |
d458bd84 PA |
249 | }; |
250 | ||
c1e36e3e PA |
251 | /* Controls whether GDB is willing to use range stepping. */ |
252 | ||
253 | static int use_range_stepping = 1; | |
254 | ||
0d031856 TT |
255 | #define OPAQUETHREADBYTES 8 |
256 | ||
257 | /* a 64 bit opaque identifier */ | |
258 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
259 | ||
260 | /* About this many threadisds fit in a packet. */ | |
261 | ||
262 | #define MAXTHREADLISTRESULTS 32 | |
263 | ||
ea9c271d DJ |
264 | /* Description of the remote protocol state for the currently |
265 | connected target. This is per-target state, and independent of the | |
266 | selected architecture. */ | |
267 | ||
268 | struct remote_state | |
269 | { | |
270 | /* A buffer to use for incoming packets, and its current size. The | |
271 | buffer is grown dynamically for larger incoming packets. | |
272 | Outgoing packets may also be constructed in this buffer. | |
273 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
274 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
275 | packets. */ | |
276 | char *buf; | |
277 | long buf_size; | |
be2a5f71 | 278 | |
1e51243a PA |
279 | /* True if we're going through initial connection setup (finding out |
280 | about the remote side's threads, relocating symbols, etc.). */ | |
281 | int starting_up; | |
282 | ||
be2a5f71 DJ |
283 | /* If we negotiated packet size explicitly (and thus can bypass |
284 | heuristics for the largest packet size that will not overflow | |
285 | a buffer in the stub), this will be set to that packet size. | |
286 | Otherwise zero, meaning to use the guessed size. */ | |
287 | long explicit_packet_size; | |
2d717e4f DJ |
288 | |
289 | /* remote_wait is normally called when the target is running and | |
290 | waits for a stop reply packet. But sometimes we need to call it | |
291 | when the target is already stopped. We can send a "?" packet | |
292 | and have remote_wait read the response. Or, if we already have | |
293 | the response, we can stash it in BUF and tell remote_wait to | |
294 | skip calling getpkt. This flag is set when BUF contains a | |
295 | stop reply packet and the target is not waiting. */ | |
296 | int cached_wait_status; | |
a6f3e723 SL |
297 | |
298 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
299 | expect acks from each other. The connection is assumed to be | |
300 | reliable. */ | |
301 | int noack_mode; | |
82f73884 PA |
302 | |
303 | /* True if we're connected in extended remote mode. */ | |
304 | int extended; | |
305 | ||
e24a49d8 PA |
306 | /* True if we resumed the target and we're waiting for the target to |
307 | stop. In the mean time, we can't start another command/query. | |
308 | The remote server wouldn't be ready to process it, so we'd | |
309 | timeout waiting for a reply that would never come and eventually | |
310 | we'd close the connection. This can happen in asynchronous mode | |
311 | because we allow GDB commands while the target is running. */ | |
312 | int waiting_for_stop_reply; | |
74531fed | 313 | |
d458bd84 PA |
314 | /* The status of the stub support for the various vCont actions. */ |
315 | struct vCont_action_support supports_vCont; | |
782b2b07 | 316 | |
3a29589a DJ |
317 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
318 | responded to that. */ | |
319 | int ctrlc_pending_p; | |
5d93a237 TT |
320 | |
321 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
322 | remote_open knows that we don't have a file open when the program | |
323 | starts. */ | |
324 | struct serial *remote_desc; | |
47f8a51d TT |
325 | |
326 | /* These are the threads which we last sent to the remote system. The | |
327 | TID member will be -1 for all or -2 for not sent yet. */ | |
328 | ptid_t general_thread; | |
329 | ptid_t continue_thread; | |
262e1174 TT |
330 | |
331 | /* This is the traceframe which we last selected on the remote system. | |
332 | It will be -1 if no traceframe is selected. */ | |
333 | int remote_traceframe_number; | |
747dc59d TT |
334 | |
335 | char *last_pass_packet; | |
5e4a05c4 TT |
336 | |
337 | /* The last QProgramSignals packet sent to the target. We bypass | |
338 | sending a new program signals list down to the target if the new | |
339 | packet is exactly the same as the last we sent. IOW, we only let | |
340 | the target know about program signals list changes. */ | |
341 | char *last_program_signals_packet; | |
b73be471 TT |
342 | |
343 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
344 | |
345 | int last_sent_step; | |
8e88304f TT |
346 | |
347 | char *finished_object; | |
348 | char *finished_annex; | |
349 | ULONGEST finished_offset; | |
b80fafe3 TT |
350 | |
351 | /* Should we try the 'ThreadInfo' query packet? | |
352 | ||
353 | This variable (NOT available to the user: auto-detect only!) | |
354 | determines whether GDB will use the new, simpler "ThreadInfo" | |
355 | query or the older, more complex syntax for thread queries. | |
356 | This is an auto-detect variable (set to true at each connect, | |
357 | and set to false when the target fails to recognize it). */ | |
358 | int use_threadinfo_query; | |
359 | int use_threadextra_query; | |
88b496c3 | 360 | |
ee154bee TT |
361 | /* This is set to the data address of the access causing the target |
362 | to stop for a watchpoint. */ | |
363 | CORE_ADDR remote_watch_data_address; | |
364 | ||
f7e6eed5 PA |
365 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
366 | enum target_stop_reason stop_reason; | |
0d031856 TT |
367 | |
368 | threadref echo_nextthread; | |
369 | threadref nextthread; | |
370 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
371 | |
372 | /* The state of remote notification. */ | |
373 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
374 | |
375 | /* The branch trace configuration. */ | |
376 | struct btrace_config btrace_config; | |
15a201c8 GB |
377 | |
378 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
379 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
380 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
381 | has yet been sent. */ | |
382 | int fs_pid; | |
ea9c271d DJ |
383 | }; |
384 | ||
dc146f7c VP |
385 | /* Private data that we'll store in (struct thread_info)->private. */ |
386 | struct private_thread_info | |
387 | { | |
388 | char *extra; | |
389 | int core; | |
390 | }; | |
391 | ||
392 | static void | |
393 | free_private_thread_info (struct private_thread_info *info) | |
394 | { | |
395 | xfree (info->extra); | |
396 | xfree (info); | |
397 | } | |
398 | ||
ea9c271d DJ |
399 | /* This data could be associated with a target, but we do not always |
400 | have access to the current target when we need it, so for now it is | |
401 | static. This will be fine for as long as only one target is in use | |
402 | at a time. */ | |
cf792862 | 403 | static struct remote_state *remote_state; |
ea9c271d DJ |
404 | |
405 | static struct remote_state * | |
0b83947e | 406 | get_remote_state_raw (void) |
ea9c271d | 407 | { |
cf792862 TT |
408 | return remote_state; |
409 | } | |
410 | ||
411 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
412 | return it. */ | |
413 | ||
414 | static struct remote_state * | |
415 | new_remote_state (void) | |
416 | { | |
417 | struct remote_state *result = XCNEW (struct remote_state); | |
418 | ||
419 | /* The default buffer size is unimportant; it will be expanded | |
420 | whenever a larger buffer is needed. */ | |
421 | result->buf_size = 400; | |
422 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 423 | result->remote_traceframe_number = -1; |
b73be471 | 424 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 425 | result->fs_pid = -1; |
cf792862 TT |
426 | |
427 | return result; | |
ea9c271d DJ |
428 | } |
429 | ||
430 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 431 | |
ad10f812 AC |
432 | struct packet_reg |
433 | { | |
434 | long offset; /* Offset into G packet. */ | |
435 | long regnum; /* GDB's internal register number. */ | |
436 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 437 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 438 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 439 | at present. */ |
f5656ead | 440 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 441 | at present. */ |
ad10f812 AC |
442 | }; |
443 | ||
ea9c271d | 444 | struct remote_arch_state |
d01949b6 | 445 | { |
ad10f812 AC |
446 | /* Description of the remote protocol registers. */ |
447 | long sizeof_g_packet; | |
b323314b AC |
448 | |
449 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 450 | (making an array gdbarch_num_regs in size). */ |
b323314b | 451 | struct packet_reg *regs; |
ad10f812 | 452 | |
d01949b6 AC |
453 | /* This is the size (in chars) of the first response to the ``g'' |
454 | packet. It is used as a heuristic when determining the maximum | |
455 | size of memory-read and memory-write packets. A target will | |
456 | typically only reserve a buffer large enough to hold the ``g'' | |
457 | packet. The size does not include packet overhead (headers and | |
23860348 | 458 | trailers). */ |
d01949b6 AC |
459 | long actual_register_packet_size; |
460 | ||
461 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 462 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
463 | long remote_packet_size; |
464 | }; | |
465 | ||
35b1e5cc SS |
466 | /* Utility: generate error from an incoming stub packet. */ |
467 | static void | |
468 | trace_error (char *buf) | |
469 | { | |
470 | if (*buf++ != 'E') | |
471 | return; /* not an error msg */ | |
472 | switch (*buf) | |
473 | { | |
474 | case '1': /* malformed packet error */ | |
475 | if (*++buf == '0') /* general case: */ | |
476 | error (_("remote.c: error in outgoing packet.")); | |
477 | else | |
478 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
479 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
480 | default: |
481 | error (_("Target returns error code '%s'."), buf); | |
482 | } | |
483 | } | |
484 | ||
485 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
486 | static char * | |
487 | remote_get_noisy_reply (char **buf_p, | |
488 | long *sizeof_buf) | |
489 | { | |
490 | do /* Loop on reply from remote stub. */ | |
491 | { | |
492 | char *buf; | |
a744cf53 | 493 | |
0df8b418 | 494 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
495 | getpkt (buf_p, sizeof_buf, 0); |
496 | buf = *buf_p; | |
ad91cd99 | 497 | if (buf[0] == 'E') |
35b1e5cc | 498 | trace_error (buf); |
61012eef | 499 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
500 | { |
501 | ULONGEST ul; | |
502 | CORE_ADDR from, to, org_to; | |
503 | char *p, *pp; | |
504 | int adjusted_size = 0; | |
7556d4a4 | 505 | int relocated = 0; |
dde08ee1 PA |
506 | |
507 | p = buf + strlen ("qRelocInsn:"); | |
508 | pp = unpack_varlen_hex (p, &ul); | |
509 | if (*pp != ';') | |
cb91c06a | 510 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
511 | from = ul; |
512 | ||
513 | p = pp + 1; | |
a9cbf802 | 514 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
515 | to = ul; |
516 | ||
517 | org_to = to; | |
518 | ||
492d29ea | 519 | TRY |
dde08ee1 | 520 | { |
f5656ead | 521 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 522 | relocated = 1; |
dde08ee1 | 523 | } |
492d29ea | 524 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
525 | { |
526 | if (ex.error == MEMORY_ERROR) | |
527 | { | |
528 | /* Propagate memory errors silently back to the | |
529 | target. The stub may have limited the range of | |
530 | addresses we can write to, for example. */ | |
531 | } | |
532 | else | |
533 | { | |
534 | /* Something unexpectedly bad happened. Be verbose | |
535 | so we can tell what, and propagate the error back | |
536 | to the stub, so it doesn't get stuck waiting for | |
537 | a response. */ | |
538 | exception_fprintf (gdb_stderr, ex, | |
539 | _("warning: relocating instruction: ")); | |
540 | } | |
541 | putpkt ("E01"); | |
542 | } | |
492d29ea | 543 | END_CATCH |
7556d4a4 PA |
544 | |
545 | if (relocated) | |
dde08ee1 PA |
546 | { |
547 | adjusted_size = to - org_to; | |
548 | ||
bba74b36 | 549 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
550 | putpkt (buf); |
551 | } | |
dde08ee1 | 552 | } |
ad91cd99 | 553 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
554 | remote_console_output (buf + 1); /* 'O' message from stub */ |
555 | else | |
0df8b418 | 556 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
557 | } |
558 | while (1); | |
559 | } | |
3c3bea1c | 560 | |
d01949b6 AC |
561 | /* Handle for retreving the remote protocol data from gdbarch. */ |
562 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
563 | ||
ea9c271d DJ |
564 | static struct remote_arch_state * |
565 | get_remote_arch_state (void) | |
d01949b6 | 566 | { |
f5656ead | 567 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
568 | } |
569 | ||
0b83947e DJ |
570 | /* Fetch the global remote target state. */ |
571 | ||
572 | static struct remote_state * | |
573 | get_remote_state (void) | |
574 | { | |
575 | /* Make sure that the remote architecture state has been | |
576 | initialized, because doing so might reallocate rs->buf. Any | |
577 | function which calls getpkt also needs to be mindful of changes | |
578 | to rs->buf, but this call limits the number of places which run | |
579 | into trouble. */ | |
580 | get_remote_arch_state (); | |
581 | ||
582 | return get_remote_state_raw (); | |
583 | } | |
584 | ||
74ca34ce DJ |
585 | static int |
586 | compare_pnums (const void *lhs_, const void *rhs_) | |
587 | { | |
588 | const struct packet_reg * const *lhs = lhs_; | |
589 | const struct packet_reg * const *rhs = rhs_; | |
590 | ||
591 | if ((*lhs)->pnum < (*rhs)->pnum) | |
592 | return -1; | |
593 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
594 | return 0; | |
595 | else | |
596 | return 1; | |
597 | } | |
598 | ||
c21236dc PA |
599 | static int |
600 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 601 | { |
74ca34ce | 602 | int regnum, num_remote_regs, offset; |
74ca34ce | 603 | struct packet_reg **remote_regs; |
ea9c271d | 604 | |
4a22f64d | 605 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 606 | { |
c21236dc | 607 | struct packet_reg *r = ®s[regnum]; |
baef701f | 608 | |
4a22f64d | 609 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
610 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
611 | r->pnum = -1; | |
612 | else | |
613 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
614 | ||
b323314b | 615 | r->regnum = regnum; |
74ca34ce DJ |
616 | } |
617 | ||
618 | /* Define the g/G packet format as the contents of each register | |
619 | with a remote protocol number, in order of ascending protocol | |
620 | number. */ | |
621 | ||
4a22f64d | 622 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 623 | * sizeof (struct packet_reg *)); |
f57d151a | 624 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 625 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 626 | regnum++) |
c21236dc PA |
627 | if (regs[regnum].pnum != -1) |
628 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 629 | |
74ca34ce DJ |
630 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
631 | compare_pnums); | |
632 | ||
633 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
634 | { | |
635 | remote_regs[regnum]->in_g_packet = 1; | |
636 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 637 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
638 | } |
639 | ||
c21236dc PA |
640 | return offset; |
641 | } | |
642 | ||
643 | /* Given the architecture described by GDBARCH, return the remote | |
644 | protocol register's number and the register's offset in the g/G | |
645 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
646 | If the target does not have a mapping for REGNUM, return false, | |
647 | otherwise, return true. */ | |
648 | ||
649 | int | |
650 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
651 | int *pnum, int *poffset) | |
652 | { | |
653 | int sizeof_g_packet; | |
654 | struct packet_reg *regs; | |
655 | struct cleanup *old_chain; | |
656 | ||
657 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
658 | ||
659 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
660 | old_chain = make_cleanup (xfree, regs); | |
661 | ||
662 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
663 | ||
664 | *pnum = regs[regnum].pnum; | |
665 | *poffset = regs[regnum].offset; | |
666 | ||
667 | do_cleanups (old_chain); | |
668 | ||
669 | return *pnum != -1; | |
670 | } | |
671 | ||
672 | static void * | |
673 | init_remote_state (struct gdbarch *gdbarch) | |
674 | { | |
675 | struct remote_state *rs = get_remote_state_raw (); | |
676 | struct remote_arch_state *rsa; | |
677 | ||
678 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
679 | ||
680 | /* Use the architecture to build a regnum<->pnum table, which will be | |
681 | 1:1 unless a feature set specifies otherwise. */ | |
682 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
683 | gdbarch_num_regs (gdbarch), | |
684 | struct packet_reg); | |
685 | ||
74ca34ce DJ |
686 | /* Record the maximum possible size of the g packet - it may turn out |
687 | to be smaller. */ | |
c21236dc | 688 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 689 | |
0df8b418 | 690 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
691 | remote stubs have a hardwired buffer size of 400 bytes |
692 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
693 | as the maximum packet-size to ensure that the packet and an extra | |
694 | NUL character can always fit in the buffer. This stops GDB | |
695 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
696 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
697 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 698 | |
ea9c271d DJ |
699 | /* This one is filled in when a ``g'' packet is received. */ |
700 | rsa->actual_register_packet_size = 0; | |
701 | ||
702 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
703 | default, adjust the size accordingly. Remember that each byte is |
704 | encoded as two characters. 32 is the overhead for the packet | |
705 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 706 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 707 | little. */ |
ea9c271d DJ |
708 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
709 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 710 | |
ea9c271d DJ |
711 | /* Make sure that the packet buffer is plenty big enough for |
712 | this architecture. */ | |
713 | if (rs->buf_size < rsa->remote_packet_size) | |
714 | { | |
715 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 716 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 717 | } |
6d820c5c | 718 | |
ea9c271d DJ |
719 | return rsa; |
720 | } | |
721 | ||
722 | /* Return the current allowed size of a remote packet. This is | |
723 | inferred from the current architecture, and should be used to | |
724 | limit the length of outgoing packets. */ | |
725 | static long | |
726 | get_remote_packet_size (void) | |
727 | { | |
be2a5f71 | 728 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
729 | struct remote_arch_state *rsa = get_remote_arch_state (); |
730 | ||
be2a5f71 DJ |
731 | if (rs->explicit_packet_size) |
732 | return rs->explicit_packet_size; | |
733 | ||
ea9c271d | 734 | return rsa->remote_packet_size; |
d01949b6 AC |
735 | } |
736 | ||
ad10f812 | 737 | static struct packet_reg * |
ea9c271d | 738 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 739 | { |
f5656ead | 740 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
741 | return NULL; |
742 | else | |
ad10f812 | 743 | { |
ea9c271d | 744 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 745 | |
b323314b AC |
746 | gdb_assert (r->regnum == regnum); |
747 | return r; | |
ad10f812 | 748 | } |
ad10f812 AC |
749 | } |
750 | ||
751 | static struct packet_reg * | |
ea9c271d | 752 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 753 | { |
b323314b | 754 | int i; |
a744cf53 | 755 | |
f5656ead | 756 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 757 | { |
ea9c271d | 758 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 759 | |
b323314b AC |
760 | if (r->pnum == pnum) |
761 | return r; | |
ad10f812 AC |
762 | } |
763 | return NULL; | |
d01949b6 AC |
764 | } |
765 | ||
c906108c SS |
766 | static struct target_ops remote_ops; |
767 | ||
768 | static struct target_ops extended_remote_ops; | |
769 | ||
6426a772 JM |
770 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
771 | ``forever'' still use the normal timeout mechanism. This is | |
772 | currently used by the ASYNC code to guarentee that target reads | |
773 | during the initial connect always time-out. Once getpkt has been | |
774 | modified to return a timeout indication and, in turn | |
775 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 776 | this can go away. */ |
6426a772 JM |
777 | static int wait_forever_enabled_p = 1; |
778 | ||
9a7071a8 JB |
779 | /* Allow the user to specify what sequence to send to the remote |
780 | when he requests a program interruption: Although ^C is usually | |
781 | what remote systems expect (this is the default, here), it is | |
782 | sometimes preferable to send a break. On other systems such | |
783 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
784 | is required in order to interrupt the execution. */ | |
785 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
786 | const char interrupt_sequence_break[] = "BREAK"; | |
787 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 788 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
789 | { |
790 | interrupt_sequence_control_c, | |
791 | interrupt_sequence_break, | |
792 | interrupt_sequence_break_g, | |
793 | NULL | |
794 | }; | |
795 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
796 | ||
797 | static void | |
798 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
799 | struct cmd_list_element *c, | |
800 | const char *value) | |
801 | { | |
802 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
803 | fprintf_filtered (file, | |
804 | _("Send the ASCII ETX character (Ctrl-c) " | |
805 | "to the remote target to interrupt the " | |
806 | "execution of the program.\n")); | |
807 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
808 | fprintf_filtered (file, | |
809 | _("send a break signal to the remote target " | |
810 | "to interrupt the execution of the program.\n")); | |
811 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
812 | fprintf_filtered (file, | |
813 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
814 | "the remote target to interrupt the execution " | |
815 | "of Linux kernel.\n")); | |
816 | else | |
817 | internal_error (__FILE__, __LINE__, | |
818 | _("Invalid value for interrupt_sequence_mode: %s."), | |
819 | interrupt_sequence_mode); | |
820 | } | |
6426a772 | 821 | |
9a7071a8 JB |
822 | /* This boolean variable specifies whether interrupt_sequence is sent |
823 | to the remote target when gdb connects to it. | |
824 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
825 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
826 | static int interrupt_on_connect = 0; | |
c906108c | 827 | |
9a7071a8 JB |
828 | /* This variable is used to implement the "set/show remotebreak" commands. |
829 | Since these commands are now deprecated in favor of "set/show remote | |
830 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
831 | static int remote_break; |
832 | ||
9a7071a8 JB |
833 | static void |
834 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
835 | { | |
836 | if (remote_break) | |
837 | interrupt_sequence_mode = interrupt_sequence_break; | |
838 | else | |
839 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
840 | } | |
841 | ||
842 | static void | |
843 | show_remotebreak (struct ui_file *file, int from_tty, | |
844 | struct cmd_list_element *c, | |
845 | const char *value) | |
846 | { | |
847 | } | |
848 | ||
c906108c SS |
849 | /* This variable sets the number of bits in an address that are to be |
850 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 851 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
852 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
853 | initial implementation of remote.c restricted the address sent in | |
854 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
855 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
856 | address was never sent. Since fixing this bug may cause a break in | |
857 | some remote targets this variable is principly provided to | |
23860348 | 858 | facilitate backward compatibility. */ |
c906108c | 859 | |
883b9c6c | 860 | static unsigned int remote_address_size; |
c906108c | 861 | |
75c99385 PA |
862 | /* Temporary to track who currently owns the terminal. See |
863 | remote_terminal_* for more details. */ | |
6426a772 JM |
864 | |
865 | static int remote_async_terminal_ours_p; | |
866 | ||
2d717e4f DJ |
867 | /* The executable file to use for "run" on the remote side. */ |
868 | ||
869 | static char *remote_exec_file = ""; | |
870 | ||
11cf8741 | 871 | \f |
11cf8741 | 872 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
873 | memory read/write packet. MIN (rsa->remote_packet_size, |
874 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 875 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
876 | (speed up transfers). The variables ``preferred_*'' (the user |
877 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 878 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
879 | |
880 | struct memory_packet_config | |
881 | { | |
882 | char *name; | |
883 | long size; | |
884 | int fixed_p; | |
885 | }; | |
886 | ||
887 | /* Compute the current size of a read/write packet. Since this makes | |
888 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
889 | ||
890 | static long | |
891 | get_memory_packet_size (struct memory_packet_config *config) | |
892 | { | |
d01949b6 | 893 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
894 | struct remote_arch_state *rsa = get_remote_arch_state (); |
895 | ||
11cf8741 JM |
896 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
897 | law?) that some hosts don't cope very well with large alloca() | |
898 | calls. Eventually the alloca() code will be replaced by calls to | |
899 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 900 | be lifted or removed. */ |
11cf8741 JM |
901 | #ifndef MAX_REMOTE_PACKET_SIZE |
902 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
903 | #endif | |
3de11b2e | 904 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 905 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 906 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
907 | #endif |
908 | long what_they_get; | |
909 | if (config->fixed_p) | |
910 | { | |
911 | if (config->size <= 0) | |
912 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
913 | else | |
914 | what_they_get = config->size; | |
915 | } | |
916 | else | |
917 | { | |
ea9c271d | 918 | what_they_get = get_remote_packet_size (); |
23860348 | 919 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
920 | if (config->size > 0 |
921 | && what_they_get > config->size) | |
922 | what_they_get = config->size; | |
be2a5f71 DJ |
923 | |
924 | /* Limit it to the size of the targets ``g'' response unless we have | |
925 | permission from the stub to use a larger packet size. */ | |
926 | if (rs->explicit_packet_size == 0 | |
927 | && rsa->actual_register_packet_size > 0 | |
928 | && what_they_get > rsa->actual_register_packet_size) | |
929 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
930 | } |
931 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
932 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
933 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
934 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
935 | |
936 | /* Make sure there is room in the global buffer for this packet | |
937 | (including its trailing NUL byte). */ | |
938 | if (rs->buf_size < what_they_get + 1) | |
939 | { | |
940 | rs->buf_size = 2 * what_they_get; | |
941 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
942 | } | |
943 | ||
11cf8741 JM |
944 | return what_they_get; |
945 | } | |
946 | ||
0df8b418 | 947 | /* Update the size of a read/write packet. If they user wants |
23860348 | 948 | something really big then do a sanity check. */ |
11cf8741 JM |
949 | |
950 | static void | |
951 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
952 | { | |
953 | int fixed_p = config->fixed_p; | |
954 | long size = config->size; | |
a744cf53 | 955 | |
11cf8741 | 956 | if (args == NULL) |
8a3fe4f8 | 957 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
958 | else if (strcmp (args, "hard") == 0 |
959 | || strcmp (args, "fixed") == 0) | |
960 | fixed_p = 1; | |
961 | else if (strcmp (args, "soft") == 0 | |
962 | || strcmp (args, "limit") == 0) | |
963 | fixed_p = 0; | |
964 | else | |
965 | { | |
966 | char *end; | |
a744cf53 | 967 | |
11cf8741 JM |
968 | size = strtoul (args, &end, 0); |
969 | if (args == end) | |
8a3fe4f8 | 970 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
971 | #if 0 |
972 | /* Instead of explicitly capping the size of a packet to | |
973 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
974 | instead allowed to set the size to something arbitrarily | |
23860348 | 975 | large. */ |
11cf8741 | 976 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 977 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
978 | #endif |
979 | } | |
23860348 | 980 | /* Extra checks? */ |
11cf8741 JM |
981 | if (fixed_p && !config->fixed_p) |
982 | { | |
e2e0b3e5 AC |
983 | if (! query (_("The target may not be able to correctly handle a %s\n" |
984 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 985 | config->name, size)) |
8a3fe4f8 | 986 | error (_("Packet size not changed.")); |
11cf8741 | 987 | } |
23860348 | 988 | /* Update the config. */ |
11cf8741 JM |
989 | config->fixed_p = fixed_p; |
990 | config->size = size; | |
991 | } | |
992 | ||
993 | static void | |
994 | show_memory_packet_size (struct memory_packet_config *config) | |
995 | { | |
a3f17187 | 996 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 997 | if (config->fixed_p) |
a3f17187 | 998 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
999 | get_memory_packet_size (config)); |
1000 | else | |
a3f17187 | 1001 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1002 | get_memory_packet_size (config)); |
1003 | } | |
1004 | ||
1005 | static struct memory_packet_config memory_write_packet_config = | |
1006 | { | |
1007 | "memory-write-packet-size", | |
1008 | }; | |
1009 | ||
1010 | static void | |
1011 | set_memory_write_packet_size (char *args, int from_tty) | |
1012 | { | |
1013 | set_memory_packet_size (args, &memory_write_packet_config); | |
1014 | } | |
1015 | ||
1016 | static void | |
1017 | show_memory_write_packet_size (char *args, int from_tty) | |
1018 | { | |
1019 | show_memory_packet_size (&memory_write_packet_config); | |
1020 | } | |
1021 | ||
1022 | static long | |
1023 | get_memory_write_packet_size (void) | |
1024 | { | |
1025 | return get_memory_packet_size (&memory_write_packet_config); | |
1026 | } | |
1027 | ||
1028 | static struct memory_packet_config memory_read_packet_config = | |
1029 | { | |
1030 | "memory-read-packet-size", | |
1031 | }; | |
1032 | ||
1033 | static void | |
1034 | set_memory_read_packet_size (char *args, int from_tty) | |
1035 | { | |
1036 | set_memory_packet_size (args, &memory_read_packet_config); | |
1037 | } | |
1038 | ||
1039 | static void | |
1040 | show_memory_read_packet_size (char *args, int from_tty) | |
1041 | { | |
1042 | show_memory_packet_size (&memory_read_packet_config); | |
1043 | } | |
1044 | ||
1045 | static long | |
1046 | get_memory_read_packet_size (void) | |
1047 | { | |
1048 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1049 | |
11cf8741 JM |
1050 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1051 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1052 | increased beyond this. */ |
1053 | if (size > get_remote_packet_size ()) | |
1054 | size = get_remote_packet_size (); | |
11cf8741 JM |
1055 | return size; |
1056 | } | |
1057 | ||
11cf8741 | 1058 | \f |
5a2468f5 | 1059 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1060 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1061 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1062 | |
1063 | enum packet_support | |
1064 | { | |
1065 | PACKET_SUPPORT_UNKNOWN = 0, | |
1066 | PACKET_ENABLE, | |
1067 | PACKET_DISABLE | |
1068 | }; | |
1069 | ||
5a2468f5 JM |
1070 | struct packet_config |
1071 | { | |
bb572ddd DJ |
1072 | const char *name; |
1073 | const char *title; | |
4082afcc PA |
1074 | |
1075 | /* If auto, GDB auto-detects support for this packet or feature, | |
1076 | either through qSupported, or by trying the packet and looking | |
1077 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1078 | packet. If false, the packet is disabled. Configs that don't |
1079 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1080 | enum auto_boolean detect; |
4082afcc PA |
1081 | |
1082 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1083 | enum packet_support support; |
1084 | }; | |
1085 | ||
d471ea57 | 1086 | /* Analyze a packet's return value and update the packet config |
23860348 | 1087 | accordingly. */ |
d471ea57 AC |
1088 | |
1089 | enum packet_result | |
1090 | { | |
1091 | PACKET_ERROR, | |
1092 | PACKET_OK, | |
1093 | PACKET_UNKNOWN | |
1094 | }; | |
1095 | ||
4082afcc PA |
1096 | static enum packet_support packet_config_support (struct packet_config *config); |
1097 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1098 | |
1099 | static void | |
fba45db2 | 1100 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1101 | { |
1102 | char *support = "internal-error"; | |
a744cf53 | 1103 | |
4082afcc | 1104 | switch (packet_config_support (config)) |
5a2468f5 JM |
1105 | { |
1106 | case PACKET_ENABLE: | |
1107 | support = "enabled"; | |
1108 | break; | |
1109 | case PACKET_DISABLE: | |
1110 | support = "disabled"; | |
1111 | break; | |
1112 | case PACKET_SUPPORT_UNKNOWN: | |
1113 | support = "unknown"; | |
1114 | break; | |
1115 | } | |
1116 | switch (config->detect) | |
1117 | { | |
7f19b9a2 | 1118 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1119 | printf_filtered (_("Support for the `%s' packet " |
1120 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1121 | config->name, support); |
5a2468f5 | 1122 | break; |
7f19b9a2 AC |
1123 | case AUTO_BOOLEAN_TRUE: |
1124 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1125 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1126 | config->name, support); | |
8e248173 | 1127 | break; |
5a2468f5 JM |
1128 | } |
1129 | } | |
1130 | ||
1131 | static void | |
bb572ddd DJ |
1132 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1133 | const char *title, int legacy) | |
d471ea57 | 1134 | { |
5a2468f5 JM |
1135 | char *set_doc; |
1136 | char *show_doc; | |
d471ea57 | 1137 | char *cmd_name; |
3ed07be4 | 1138 | |
5a2468f5 JM |
1139 | config->name = name; |
1140 | config->title = title; | |
b435e160 AC |
1141 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1142 | name, title); | |
3e43a32a MS |
1143 | show_doc = xstrprintf ("Show current use of remote " |
1144 | "protocol `%s' (%s) packet", | |
b435e160 | 1145 | name, title); |
d471ea57 | 1146 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1147 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1148 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1149 | &config->detect, set_doc, |
1150 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1151 | NULL, |
bb572ddd DJ |
1152 | show_remote_protocol_packet_cmd, |
1153 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1154 | /* The command code copies the documentation strings. */ |
1155 | xfree (set_doc); | |
1156 | xfree (show_doc); | |
23860348 | 1157 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1158 | if (legacy) |
1159 | { | |
1160 | char *legacy_name; | |
a744cf53 | 1161 | |
b435e160 | 1162 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1163 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1164 | &remote_set_cmdlist); |
d471ea57 | 1165 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1166 | &remote_show_cmdlist); |
d471ea57 | 1167 | } |
5a2468f5 JM |
1168 | } |
1169 | ||
d471ea57 | 1170 | static enum packet_result |
a76d924d | 1171 | packet_check_result (const char *buf) |
5a2468f5 | 1172 | { |
d471ea57 | 1173 | if (buf[0] != '\0') |
5a2468f5 | 1174 | { |
d471ea57 | 1175 | /* The stub recognized the packet request. Check that the |
23860348 | 1176 | operation succeeded. */ |
a76d924d DJ |
1177 | if (buf[0] == 'E' |
1178 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1179 | && buf[3] == '\0') | |
1180 | /* "Enn" - definitly an error. */ | |
1181 | return PACKET_ERROR; | |
1182 | ||
1183 | /* Always treat "E." as an error. This will be used for | |
1184 | more verbose error messages, such as E.memtypes. */ | |
1185 | if (buf[0] == 'E' && buf[1] == '.') | |
1186 | return PACKET_ERROR; | |
1187 | ||
1188 | /* The packet may or may not be OK. Just assume it is. */ | |
1189 | return PACKET_OK; | |
1190 | } | |
1191 | else | |
1192 | /* The stub does not support the packet. */ | |
1193 | return PACKET_UNKNOWN; | |
1194 | } | |
1195 | ||
1196 | static enum packet_result | |
1197 | packet_ok (const char *buf, struct packet_config *config) | |
1198 | { | |
1199 | enum packet_result result; | |
1200 | ||
4082afcc PA |
1201 | if (config->detect != AUTO_BOOLEAN_TRUE |
1202 | && config->support == PACKET_DISABLE) | |
1203 | internal_error (__FILE__, __LINE__, | |
1204 | _("packet_ok: attempt to use a disabled packet")); | |
1205 | ||
a76d924d DJ |
1206 | result = packet_check_result (buf); |
1207 | switch (result) | |
1208 | { | |
1209 | case PACKET_OK: | |
1210 | case PACKET_ERROR: | |
1211 | /* The stub recognized the packet request. */ | |
4082afcc | 1212 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1213 | { |
d471ea57 AC |
1214 | if (remote_debug) |
1215 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1216 | "Packet %s (%s) is supported\n", |
1217 | config->name, config->title); | |
d471ea57 | 1218 | config->support = PACKET_ENABLE; |
d471ea57 | 1219 | } |
a76d924d DJ |
1220 | break; |
1221 | case PACKET_UNKNOWN: | |
23860348 | 1222 | /* The stub does not support the packet. */ |
4082afcc PA |
1223 | if (config->detect == AUTO_BOOLEAN_AUTO |
1224 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1225 | { |
4082afcc PA |
1226 | /* If the stub previously indicated that the packet was |
1227 | supported then there is a protocol error. */ | |
1228 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1229 | config->name, config->title); | |
1230 | } | |
1231 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1232 | { | |
1233 | /* The user set it wrong. */ | |
1234 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1235 | config->name, config->title); | |
d471ea57 | 1236 | } |
4082afcc PA |
1237 | |
1238 | if (remote_debug) | |
1239 | fprintf_unfiltered (gdb_stdlog, | |
1240 | "Packet %s (%s) is NOT supported\n", | |
1241 | config->name, config->title); | |
1242 | config->support = PACKET_DISABLE; | |
a76d924d | 1243 | break; |
5a2468f5 | 1244 | } |
a76d924d DJ |
1245 | |
1246 | return result; | |
5a2468f5 JM |
1247 | } |
1248 | ||
444abaca DJ |
1249 | enum { |
1250 | PACKET_vCont = 0, | |
1251 | PACKET_X, | |
1252 | PACKET_qSymbol, | |
1253 | PACKET_P, | |
1254 | PACKET_p, | |
1255 | PACKET_Z0, | |
1256 | PACKET_Z1, | |
1257 | PACKET_Z2, | |
1258 | PACKET_Z3, | |
1259 | PACKET_Z4, | |
15a201c8 | 1260 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1261 | PACKET_vFile_open, |
1262 | PACKET_vFile_pread, | |
1263 | PACKET_vFile_pwrite, | |
1264 | PACKET_vFile_close, | |
1265 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1266 | PACKET_vFile_readlink, |
0a93529c | 1267 | PACKET_vFile_fstat, |
0876f84a | 1268 | PACKET_qXfer_auxv, |
23181151 | 1269 | PACKET_qXfer_features, |
c78fa86a | 1270 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1271 | PACKET_qXfer_libraries, |
2268b414 | 1272 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1273 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1274 | PACKET_qXfer_spu_read, |
1275 | PACKET_qXfer_spu_write, | |
07e059b5 | 1276 | PACKET_qXfer_osdata, |
dc146f7c | 1277 | PACKET_qXfer_threads, |
0fb4aa4b | 1278 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1279 | PACKET_qXfer_traceframe_info, |
169081d0 | 1280 | PACKET_qXfer_uib, |
711e434b | 1281 | PACKET_qGetTIBAddr, |
444abaca | 1282 | PACKET_qGetTLSAddr, |
be2a5f71 | 1283 | PACKET_qSupported, |
bd3eecc3 | 1284 | PACKET_qTStatus, |
89be2091 | 1285 | PACKET_QPassSignals, |
9b224c5e | 1286 | PACKET_QProgramSignals, |
936d2992 | 1287 | PACKET_qCRC, |
08388c79 | 1288 | PACKET_qSearch_memory, |
2d717e4f DJ |
1289 | PACKET_vAttach, |
1290 | PACKET_vRun, | |
a6f3e723 | 1291 | PACKET_QStartNoAckMode, |
82f73884 | 1292 | PACKET_vKill, |
4aa995e1 PA |
1293 | PACKET_qXfer_siginfo_read, |
1294 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1295 | PACKET_qAttached, |
4082afcc PA |
1296 | |
1297 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1298 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1299 | |
1300 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1301 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1302 | |
1303 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1304 | PACKET_BreakpointCommands, |
4082afcc PA |
1305 | |
1306 | /* Support for fast tracepoints. */ | |
7a697b8d | 1307 | PACKET_FastTracepoints, |
4082afcc PA |
1308 | |
1309 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1310 | PACKET_StaticTracepoints, |
4082afcc PA |
1311 | |
1312 | /* Support for installing tracepoints while a trace experiment is | |
1313 | running. */ | |
1e4d1764 | 1314 | PACKET_InstallInTrace, |
4082afcc | 1315 | |
40ab02ce MS |
1316 | PACKET_bc, |
1317 | PACKET_bs, | |
409873ef | 1318 | PACKET_TracepointSource, |
d914c394 | 1319 | PACKET_QAllow, |
78d85199 | 1320 | PACKET_qXfer_fdpic, |
03583c20 | 1321 | PACKET_QDisableRandomization, |
d1feda86 | 1322 | PACKET_QAgent, |
f6f899bf | 1323 | PACKET_QTBuffer_size, |
9accd112 MM |
1324 | PACKET_Qbtrace_off, |
1325 | PACKET_Qbtrace_bts, | |
b20a6524 | 1326 | PACKET_Qbtrace_pt, |
9accd112 | 1327 | PACKET_qXfer_btrace, |
4082afcc PA |
1328 | |
1329 | /* Support for the QNonStop packet. */ | |
1330 | PACKET_QNonStop, | |
1331 | ||
1332 | /* Support for multi-process extensions. */ | |
1333 | PACKET_multiprocess_feature, | |
1334 | ||
1335 | /* Support for enabling and disabling tracepoints while a trace | |
1336 | experiment is running. */ | |
1337 | PACKET_EnableDisableTracepoints_feature, | |
1338 | ||
1339 | /* Support for collecting strings using the tracenz bytecode. */ | |
1340 | PACKET_tracenz_feature, | |
1341 | ||
1342 | /* Support for continuing to run a trace experiment while GDB is | |
1343 | disconnected. */ | |
1344 | PACKET_DisconnectedTracing_feature, | |
1345 | ||
1346 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1347 | PACKET_augmented_libraries_svr4_read_feature, | |
1348 | ||
f4abbc16 MM |
1349 | /* Support for the qXfer:btrace-conf:read packet. */ |
1350 | PACKET_qXfer_btrace_conf, | |
1351 | ||
d33501a5 MM |
1352 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1353 | PACKET_Qbtrace_conf_bts_size, | |
1354 | ||
f7e6eed5 PA |
1355 | /* Support for swbreak+ feature. */ |
1356 | PACKET_swbreak_feature, | |
1357 | ||
1358 | /* Support for hwbreak+ feature. */ | |
1359 | PACKET_hwbreak_feature, | |
1360 | ||
89245bc0 DB |
1361 | /* Support for fork events. */ |
1362 | PACKET_fork_event_feature, | |
1363 | ||
1364 | /* Support for vfork events. */ | |
1365 | PACKET_vfork_event_feature, | |
1366 | ||
b20a6524 MM |
1367 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1368 | PACKET_Qbtrace_conf_pt_size, | |
1369 | ||
444abaca DJ |
1370 | PACKET_MAX |
1371 | }; | |
506fb367 | 1372 | |
444abaca | 1373 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1374 | |
f7e6eed5 PA |
1375 | /* Returns the packet's corresponding "set remote foo-packet" command |
1376 | state. See struct packet_config for more details. */ | |
1377 | ||
1378 | static enum auto_boolean | |
1379 | packet_set_cmd_state (int packet) | |
1380 | { | |
1381 | return remote_protocol_packets[packet].detect; | |
1382 | } | |
1383 | ||
4082afcc PA |
1384 | /* Returns whether a given packet or feature is supported. This takes |
1385 | into account the state of the corresponding "set remote foo-packet" | |
1386 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1387 | |
4082afcc PA |
1388 | static enum packet_support |
1389 | packet_config_support (struct packet_config *config) | |
1390 | { | |
1391 | switch (config->detect) | |
444abaca | 1392 | { |
4082afcc PA |
1393 | case AUTO_BOOLEAN_TRUE: |
1394 | return PACKET_ENABLE; | |
1395 | case AUTO_BOOLEAN_FALSE: | |
1396 | return PACKET_DISABLE; | |
1397 | case AUTO_BOOLEAN_AUTO: | |
1398 | return config->support; | |
1399 | default: | |
1400 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1401 | } |
4082afcc PA |
1402 | } |
1403 | ||
1404 | /* Same as packet_config_support, but takes the packet's enum value as | |
1405 | argument. */ | |
1406 | ||
1407 | static enum packet_support | |
1408 | packet_support (int packet) | |
1409 | { | |
1410 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1411 | ||
1412 | return packet_config_support (config); | |
dc8acb97 MS |
1413 | } |
1414 | ||
5a2468f5 | 1415 | static void |
444abaca DJ |
1416 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1417 | struct cmd_list_element *c, | |
1418 | const char *value) | |
5a2468f5 | 1419 | { |
444abaca | 1420 | struct packet_config *packet; |
5a2468f5 | 1421 | |
444abaca DJ |
1422 | for (packet = remote_protocol_packets; |
1423 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1424 | packet++) | |
1425 | { | |
1426 | if (&packet->detect == c->var) | |
1427 | { | |
1428 | show_packet_config_cmd (packet); | |
1429 | return; | |
1430 | } | |
1431 | } | |
9b20d036 | 1432 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1433 | c->name); |
5a2468f5 JM |
1434 | } |
1435 | ||
d471ea57 AC |
1436 | /* Should we try one of the 'Z' requests? */ |
1437 | ||
1438 | enum Z_packet_type | |
1439 | { | |
1440 | Z_PACKET_SOFTWARE_BP, | |
1441 | Z_PACKET_HARDWARE_BP, | |
1442 | Z_PACKET_WRITE_WP, | |
1443 | Z_PACKET_READ_WP, | |
1444 | Z_PACKET_ACCESS_WP, | |
1445 | NR_Z_PACKET_TYPES | |
1446 | }; | |
96baa820 | 1447 | |
d471ea57 | 1448 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1449 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1450 | |
7f19b9a2 | 1451 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1452 | |
1453 | static void | |
fba45db2 KB |
1454 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1455 | struct cmd_list_element *c) | |
96baa820 | 1456 | { |
d471ea57 | 1457 | int i; |
a744cf53 | 1458 | |
d471ea57 | 1459 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1460 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1461 | } |
1462 | ||
1463 | static void | |
08546159 AC |
1464 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1465 | struct cmd_list_element *c, | |
1466 | const char *value) | |
96baa820 | 1467 | { |
d471ea57 | 1468 | int i; |
a744cf53 | 1469 | |
d471ea57 AC |
1470 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1471 | { | |
444abaca | 1472 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1473 | } |
96baa820 JM |
1474 | } |
1475 | ||
4082afcc PA |
1476 | /* Returns true if the multi-process extensions are in effect. */ |
1477 | ||
1478 | static int | |
1479 | remote_multi_process_p (struct remote_state *rs) | |
1480 | { | |
1481 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1482 | } | |
1483 | ||
de0d863e DB |
1484 | /* Returns true if fork events are supported. */ |
1485 | ||
1486 | static int | |
1487 | remote_fork_event_p (struct remote_state *rs) | |
1488 | { | |
1489 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1490 | } | |
1491 | ||
c269dbdb DB |
1492 | /* Returns true if vfork events are supported. */ |
1493 | ||
1494 | static int | |
1495 | remote_vfork_event_p (struct remote_state *rs) | |
1496 | { | |
1497 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1498 | } | |
1499 | ||
cbb8991c DB |
1500 | /* Insert fork catchpoint target routine. If fork events are enabled |
1501 | then return success, nothing more to do. */ | |
1502 | ||
1503 | static int | |
1504 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1505 | { | |
1506 | struct remote_state *rs = get_remote_state (); | |
1507 | ||
1508 | return !remote_fork_event_p (rs); | |
1509 | } | |
1510 | ||
1511 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1512 | return success. */ | |
1513 | ||
1514 | static int | |
1515 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1516 | { | |
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1521 | then return success, nothing more to do. */ | |
1522 | ||
1523 | static int | |
1524 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1525 | { | |
1526 | struct remote_state *rs = get_remote_state (); | |
1527 | ||
1528 | return !remote_vfork_event_p (rs); | |
1529 | } | |
1530 | ||
1531 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1532 | return success. */ | |
1533 | ||
1534 | static int | |
1535 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1536 | { | |
1537 | return 0; | |
1538 | } | |
1539 | ||
23860348 | 1540 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1541 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1542 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1543 | |
74531fed PA |
1544 | \f |
1545 | /* Asynchronous signal handle registered as event loop source for | |
1546 | when we have pending events ready to be passed to the core. */ | |
1547 | ||
1548 | static struct async_event_handler *remote_async_inferior_event_token; | |
1549 | ||
c906108c SS |
1550 | \f |
1551 | ||
79d7f229 PA |
1552 | static ptid_t magic_null_ptid; |
1553 | static ptid_t not_sent_ptid; | |
1554 | static ptid_t any_thread_ptid; | |
1555 | ||
0b16c5cf PA |
1556 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1557 | detach instead of killing it when bailing out). */ | |
1558 | ||
1559 | static int | |
1560 | remote_query_attached (int pid) | |
1561 | { | |
1562 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1563 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1564 | |
4082afcc | 1565 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1566 | return 0; |
1567 | ||
1568 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1569 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1570 | else |
bba74b36 | 1571 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1572 | |
1573 | putpkt (rs->buf); | |
1574 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1575 | ||
1576 | switch (packet_ok (rs->buf, | |
1554e9be | 1577 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1578 | { |
1579 | case PACKET_OK: | |
1580 | if (strcmp (rs->buf, "1") == 0) | |
1581 | return 1; | |
1582 | break; | |
1583 | case PACKET_ERROR: | |
1584 | warning (_("Remote failure reply: %s"), rs->buf); | |
1585 | break; | |
1586 | case PACKET_UNKNOWN: | |
1587 | break; | |
1588 | } | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
49c62f2e PA |
1593 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1594 | has been invented by GDB, instead of reported by the target. Since | |
1595 | we can be connected to a remote system before before knowing about | |
1596 | any inferior, mark the target with execution when we find the first | |
1597 | inferior. If ATTACHED is 1, then we had just attached to this | |
1598 | inferior. If it is 0, then we just created this inferior. If it | |
1599 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1600 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1601 | attempt to open this inferior's executable as the main executable | |
1602 | if no main executable is open already. */ | |
1941c569 PA |
1603 | |
1604 | static struct inferior * | |
1b6e6f5c GB |
1605 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1606 | int try_open_exec) | |
1941c569 | 1607 | { |
1941c569 PA |
1608 | struct inferior *inf; |
1609 | ||
0b16c5cf PA |
1610 | /* Check whether this process we're learning about is to be |
1611 | considered attached, or if is to be considered to have been | |
1612 | spawned by the stub. */ | |
1613 | if (attached == -1) | |
1614 | attached = remote_query_attached (pid); | |
1615 | ||
f5656ead | 1616 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1617 | { |
1618 | /* If the target shares code across all inferiors, then every | |
1619 | attach adds a new inferior. */ | |
1620 | inf = add_inferior (pid); | |
1621 | ||
1622 | /* ... and every inferior is bound to the same program space. | |
1623 | However, each inferior may still have its own address | |
1624 | space. */ | |
1625 | inf->aspace = maybe_new_address_space (); | |
1626 | inf->pspace = current_program_space; | |
1627 | } | |
1628 | else | |
1629 | { | |
1630 | /* In the traditional debugging scenario, there's a 1-1 match | |
1631 | between program/address spaces. We simply bind the inferior | |
1632 | to the program space's address space. */ | |
1633 | inf = current_inferior (); | |
1634 | inferior_appeared (inf, pid); | |
1635 | } | |
1941c569 | 1636 | |
0b16c5cf | 1637 | inf->attach_flag = attached; |
49c62f2e | 1638 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1639 | |
1b6e6f5c GB |
1640 | /* If no main executable is currently open then attempt to |
1641 | open the file that was executed to create this inferior. */ | |
835205d0 | 1642 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1643 | exec_file_locate_attach (pid, 1); |
1644 | ||
1941c569 PA |
1645 | return inf; |
1646 | } | |
1647 | ||
1648 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1649 | according to RUNNING. */ | |
1650 | ||
c906108c | 1651 | static void |
1941c569 | 1652 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1653 | { |
b7ea362b PA |
1654 | struct remote_state *rs = get_remote_state (); |
1655 | ||
1656 | /* GDB historically didn't pull threads in the initial connection | |
1657 | setup. If the remote target doesn't even have a concept of | |
1658 | threads (e.g., a bare-metal target), even if internally we | |
1659 | consider that a single-threaded target, mentioning a new thread | |
1660 | might be confusing to the user. Be silent then, preserving the | |
1661 | age old behavior. */ | |
1662 | if (rs->starting_up) | |
1663 | add_thread_silent (ptid); | |
1664 | else | |
1665 | add_thread (ptid); | |
1941c569 PA |
1666 | |
1667 | set_executing (ptid, running); | |
1668 | set_running (ptid, running); | |
1669 | } | |
1670 | ||
1671 | /* Come here when we learn about a thread id from the remote target. | |
1672 | It may be the first time we hear about such thread, so take the | |
1673 | opportunity to add it to GDB's thread list. In case this is the | |
1674 | first time we're noticing its corresponding inferior, add it to | |
1675 | GDB's inferior list as well. */ | |
1676 | ||
1677 | static void | |
1678 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1679 | { | |
c906108c SS |
1680 | /* If this is a new thread, add it to GDB's thread list. |
1681 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1682 | |
1683 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1684 | { | |
1685 | /* We're seeing an event on a thread id we knew had exited. | |
1686 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1687 | remote_add_thread (currthread, running); |
82f73884 PA |
1688 | return; |
1689 | } | |
1690 | ||
79d7f229 | 1691 | if (!in_thread_list (currthread)) |
c0a2216e | 1692 | { |
1941c569 | 1693 | struct inferior *inf = NULL; |
bad34192 | 1694 | int pid = ptid_get_pid (currthread); |
1941c569 | 1695 | |
bad34192 PA |
1696 | if (ptid_is_pid (inferior_ptid) |
1697 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1698 | { |
1699 | /* inferior_ptid has no thread member yet. This can happen | |
1700 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1701 | stub doesn't support qC. This is the first stop reported | |
1702 | after an attach, so this is the main thread. Update the | |
1703 | ptid in the thread list. */ | |
bad34192 PA |
1704 | if (in_thread_list (pid_to_ptid (pid))) |
1705 | thread_change_ptid (inferior_ptid, currthread); | |
1706 | else | |
1707 | { | |
1708 | remote_add_thread (currthread, running); | |
1709 | inferior_ptid = currthread; | |
1710 | } | |
dc146f7c | 1711 | return; |
c0a2216e | 1712 | } |
82f73884 PA |
1713 | |
1714 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1715 | { |
1716 | /* inferior_ptid is not set yet. This can happen with the | |
1717 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1718 | doesn't support qC. This is the first stop reported | |
1719 | after an attach, so this is the main thread. Update the | |
1720 | ptid in the thread list. */ | |
dc146f7c | 1721 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1722 | return; |
c0a2216e | 1723 | } |
82f73884 | 1724 | |
29c87f7f PA |
1725 | /* When connecting to a target remote, or to a target |
1726 | extended-remote which already was debugging an inferior, we | |
1727 | may not know about it yet. Add it before adding its child | |
1728 | thread, so notifications are emitted in a sensible order. */ | |
1729 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1730 | { |
1731 | struct remote_state *rs = get_remote_state (); | |
1732 | int fake_pid_p = !remote_multi_process_p (rs); | |
1733 | ||
1734 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1735 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1736 | } |
29c87f7f | 1737 | |
82f73884 | 1738 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1739 | remote_add_thread (currthread, running); |
1740 | ||
1741 | /* If we found a new inferior, let the common code do whatever | |
1742 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1743 | breakpoints), unless we're just setting up an all-stop |
1744 | connection. */ | |
1941c569 | 1745 | if (inf != NULL) |
b7ea362b PA |
1746 | { |
1747 | struct remote_state *rs = get_remote_state (); | |
1748 | ||
1749 | if (non_stop || !rs->starting_up) | |
1750 | notice_new_inferior (currthread, running, 0); | |
1751 | } | |
c0a2216e | 1752 | } |
c906108c SS |
1753 | } |
1754 | ||
dc146f7c VP |
1755 | /* Return the private thread data, creating it if necessary. */ |
1756 | ||
70221824 | 1757 | static struct private_thread_info * |
dc146f7c VP |
1758 | demand_private_info (ptid_t ptid) |
1759 | { | |
1760 | struct thread_info *info = find_thread_ptid (ptid); | |
1761 | ||
1762 | gdb_assert (info); | |
1763 | ||
fe978cb0 | 1764 | if (!info->priv) |
dc146f7c | 1765 | { |
fe978cb0 | 1766 | info->priv = xmalloc (sizeof (*(info->priv))); |
dc146f7c | 1767 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1768 | info->priv->core = -1; |
1769 | info->priv->extra = 0; | |
dc146f7c VP |
1770 | } |
1771 | ||
fe978cb0 | 1772 | return info->priv; |
dc146f7c VP |
1773 | } |
1774 | ||
74531fed PA |
1775 | /* Call this function as a result of |
1776 | 1) A halt indication (T packet) containing a thread id | |
1777 | 2) A direct query of currthread | |
0df8b418 | 1778 | 3) Successful execution of set thread */ |
74531fed PA |
1779 | |
1780 | static void | |
47f8a51d | 1781 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1782 | { |
47f8a51d | 1783 | rs->general_thread = currthread; |
74531fed PA |
1784 | } |
1785 | ||
89be2091 DJ |
1786 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1787 | it can simply pass through to the inferior without reporting. */ | |
1788 | ||
1789 | static void | |
94bedb42 TT |
1790 | remote_pass_signals (struct target_ops *self, |
1791 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1792 | { |
4082afcc | 1793 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1794 | { |
1795 | char *pass_packet, *p; | |
89be2091 | 1796 | int count = 0, i; |
747dc59d | 1797 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1798 | |
1799 | gdb_assert (numsigs < 256); | |
1800 | for (i = 0; i < numsigs; i++) | |
1801 | { | |
2455069d | 1802 | if (pass_signals[i]) |
89be2091 DJ |
1803 | count++; |
1804 | } | |
1805 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1806 | strcpy (pass_packet, "QPassSignals:"); | |
1807 | p = pass_packet + strlen (pass_packet); | |
1808 | for (i = 0; i < numsigs; i++) | |
1809 | { | |
2455069d | 1810 | if (pass_signals[i]) |
89be2091 DJ |
1811 | { |
1812 | if (i >= 16) | |
1813 | *p++ = tohex (i >> 4); | |
1814 | *p++ = tohex (i & 15); | |
1815 | if (count) | |
1816 | *p++ = ';'; | |
1817 | else | |
1818 | break; | |
1819 | count--; | |
1820 | } | |
1821 | } | |
1822 | *p = 0; | |
747dc59d | 1823 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1824 | { |
89be2091 DJ |
1825 | putpkt (pass_packet); |
1826 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1827 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1828 | if (rs->last_pass_packet) |
1829 | xfree (rs->last_pass_packet); | |
1830 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1831 | } |
1832 | else | |
1833 | xfree (pass_packet); | |
1834 | } | |
1835 | } | |
1836 | ||
9b224c5e PA |
1837 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1838 | signals it should pass through to the inferior when detaching. */ | |
1839 | ||
1840 | static void | |
daf5e9b6 TT |
1841 | remote_program_signals (struct target_ops *self, |
1842 | int numsigs, unsigned char *signals) | |
9b224c5e | 1843 | { |
4082afcc | 1844 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1845 | { |
1846 | char *packet, *p; | |
1847 | int count = 0, i; | |
5e4a05c4 | 1848 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1849 | |
1850 | gdb_assert (numsigs < 256); | |
1851 | for (i = 0; i < numsigs; i++) | |
1852 | { | |
1853 | if (signals[i]) | |
1854 | count++; | |
1855 | } | |
1856 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1857 | strcpy (packet, "QProgramSignals:"); | |
1858 | p = packet + strlen (packet); | |
1859 | for (i = 0; i < numsigs; i++) | |
1860 | { | |
1861 | if (signal_pass_state (i)) | |
1862 | { | |
1863 | if (i >= 16) | |
1864 | *p++ = tohex (i >> 4); | |
1865 | *p++ = tohex (i & 15); | |
1866 | if (count) | |
1867 | *p++ = ';'; | |
1868 | else | |
1869 | break; | |
1870 | count--; | |
1871 | } | |
1872 | } | |
1873 | *p = 0; | |
5e4a05c4 TT |
1874 | if (!rs->last_program_signals_packet |
1875 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1876 | { |
9b224c5e PA |
1877 | putpkt (packet); |
1878 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1879 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1880 | xfree (rs->last_program_signals_packet); |
1881 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1882 | } |
1883 | else | |
1884 | xfree (packet); | |
1885 | } | |
1886 | } | |
1887 | ||
79d7f229 PA |
1888 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1889 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1890 | thread. If GEN is set, set the general thread, if not, then set | |
1891 | the step/continue thread. */ | |
c906108c | 1892 | static void |
79d7f229 | 1893 | set_thread (struct ptid ptid, int gen) |
c906108c | 1894 | { |
d01949b6 | 1895 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1896 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1897 | char *buf = rs->buf; |
79d7f229 | 1898 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1899 | |
79d7f229 | 1900 | if (ptid_equal (state, ptid)) |
c906108c SS |
1901 | return; |
1902 | ||
79d7f229 PA |
1903 | *buf++ = 'H'; |
1904 | *buf++ = gen ? 'g' : 'c'; | |
1905 | if (ptid_equal (ptid, magic_null_ptid)) | |
1906 | xsnprintf (buf, endbuf - buf, "0"); | |
1907 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1908 | xsnprintf (buf, endbuf - buf, "0"); | |
1909 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1910 | xsnprintf (buf, endbuf - buf, "-1"); | |
1911 | else | |
82f73884 | 1912 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1913 | putpkt (rs->buf); |
6d820c5c | 1914 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1915 | if (gen) |
47f8a51d | 1916 | rs->general_thread = ptid; |
c906108c | 1917 | else |
47f8a51d | 1918 | rs->continue_thread = ptid; |
c906108c | 1919 | } |
79d7f229 PA |
1920 | |
1921 | static void | |
1922 | set_general_thread (struct ptid ptid) | |
1923 | { | |
1924 | set_thread (ptid, 1); | |
1925 | } | |
1926 | ||
1927 | static void | |
1928 | set_continue_thread (struct ptid ptid) | |
1929 | { | |
1930 | set_thread (ptid, 0); | |
1931 | } | |
1932 | ||
3c9c4b83 PA |
1933 | /* Change the remote current process. Which thread within the process |
1934 | ends up selected isn't important, as long as it is the same process | |
1935 | as what INFERIOR_PTID points to. | |
1936 | ||
1937 | This comes from that fact that there is no explicit notion of | |
1938 | "selected process" in the protocol. The selected process for | |
1939 | general operations is the process the selected general thread | |
1940 | belongs to. */ | |
1941 | ||
1942 | static void | |
1943 | set_general_process (void) | |
1944 | { | |
1945 | struct remote_state *rs = get_remote_state (); | |
1946 | ||
1947 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1948 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1949 | return; |
1950 | ||
1951 | /* We only need to change the remote current thread if it's pointing | |
1952 | at some other process. */ | |
47f8a51d | 1953 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1954 | set_general_thread (inferior_ptid); |
1955 | } | |
1956 | ||
c906108c | 1957 | \f |
7d1a114c PA |
1958 | /* Return nonzero if this is the main thread that we made up ourselves |
1959 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
1960 | |
1961 | static int | |
7d1a114c | 1962 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1963 | { |
6d820c5c | 1964 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1965 | char *p, *endp; |
c906108c | 1966 | |
c0a2216e PA |
1967 | if (ptid_equal (ptid, magic_null_ptid)) |
1968 | /* The main thread is always alive. */ | |
1969 | return 1; | |
1970 | ||
ba348170 | 1971 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
1972 | /* The main thread is always alive. This can happen after a |
1973 | vAttach, if the remote side doesn't support | |
1974 | multi-threading. */ | |
1975 | return 1; | |
1976 | ||
7d1a114c PA |
1977 | return 0; |
1978 | } | |
1979 | ||
1980 | /* Return nonzero if the thread PTID is still alive on the remote | |
1981 | system. */ | |
1982 | ||
1983 | static int | |
1984 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1985 | { | |
1986 | struct remote_state *rs = get_remote_state (); | |
1987 | char *p, *endp; | |
1988 | ||
1989 | /* Check if this is a thread that we made up ourselves to model | |
1990 | non-threaded targets as single-threaded. */ | |
1991 | if (remote_thread_always_alive (ops, ptid)) | |
1992 | return 1; | |
1993 | ||
82f73884 PA |
1994 | p = rs->buf; |
1995 | endp = rs->buf + get_remote_packet_size (); | |
1996 | ||
1997 | *p++ = 'T'; | |
1998 | write_ptid (p, endp, ptid); | |
1999 | ||
2e9f7625 | 2000 | putpkt (rs->buf); |
6d820c5c | 2001 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2002 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2003 | } |
2004 | ||
2005 | /* About these extended threadlist and threadinfo packets. They are | |
2006 | variable length packets but, the fields within them are often fixed | |
2007 | length. They are redundent enough to send over UDP as is the | |
2008 | remote protocol in general. There is a matching unit test module | |
2009 | in libstub. */ | |
2010 | ||
23860348 | 2011 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2012 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2013 | changable. */ |
cce74817 JM |
2014 | |
2015 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2016 | Plan to fix this. */ |
cce74817 | 2017 | |
23860348 | 2018 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2019 | |
9d1f7ab2 | 2020 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2021 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2022 | |
2023 | struct gdb_ext_thread_info | |
c5aa993b | 2024 | { |
23860348 | 2025 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2026 | int active; /* Has state interesting to GDB? |
23860348 | 2027 | regs, stack. */ |
2bc416ba | 2028 | char display[256]; /* Brief state display, name, |
cedea757 | 2029 | blocked/suspended. */ |
23860348 | 2030 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2031 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2032 | whatever. */ |
c5aa993b | 2033 | }; |
cce74817 JM |
2034 | |
2035 | /* The volume of remote transfers can be limited by submitting | |
2036 | a mask containing bits specifying the desired information. | |
2037 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2038 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2039 | |
2040 | #define TAG_THREADID 1 | |
2041 | #define TAG_EXISTS 2 | |
2042 | #define TAG_DISPLAY 4 | |
2043 | #define TAG_THREADNAME 8 | |
c5aa993b | 2044 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2045 | |
23860348 | 2046 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2047 | |
a14ed312 | 2048 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2049 | |
a14ed312 | 2050 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2051 | |
a14ed312 | 2052 | static char *pack_int (char *buf, int value); |
cce74817 | 2053 | |
a14ed312 | 2054 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2055 | |
a14ed312 | 2056 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2057 | |
23860348 | 2058 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2059 | |
23860348 | 2060 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2061 | |
23860348 | 2062 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2063 | |
23860348 | 2064 | static int threadref_to_int (threadref *ref); |
cce74817 | 2065 | |
23860348 | 2066 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2067 | |
23860348 | 2068 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2069 | |
2bc416ba | 2070 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2071 | threadref *id); |
cce74817 | 2072 | |
a14ed312 | 2073 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2074 | threadref *expectedref, |
a14ed312 KB |
2075 | struct gdb_ext_thread_info |
2076 | *info); | |
cce74817 JM |
2077 | |
2078 | ||
2bc416ba | 2079 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2080 | int fieldset, /*TAG mask */ |
a14ed312 | 2081 | struct gdb_ext_thread_info *info); |
cce74817 | 2082 | |
a14ed312 KB |
2083 | static char *pack_threadlist_request (char *pkt, int startflag, |
2084 | int threadcount, | |
23860348 | 2085 | threadref *nextthread); |
cce74817 | 2086 | |
a14ed312 KB |
2087 | static int parse_threadlist_response (char *pkt, |
2088 | int result_limit, | |
23860348 | 2089 | threadref *original_echo, |
2bc416ba | 2090 | threadref *resultlist, |
23860348 | 2091 | int *doneflag); |
cce74817 | 2092 | |
a14ed312 | 2093 | static int remote_get_threadlist (int startflag, |
23860348 | 2094 | threadref *nextthread, |
a14ed312 KB |
2095 | int result_limit, |
2096 | int *done, | |
2bc416ba | 2097 | int *result_count, |
23860348 | 2098 | threadref *threadlist); |
cce74817 | 2099 | |
23860348 | 2100 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2101 | |
a14ed312 KB |
2102 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2103 | void *context, int looplimit); | |
cce74817 | 2104 | |
23860348 | 2105 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2106 | |
82f73884 PA |
2107 | |
2108 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2109 | buffer we're allowed to write to. Returns | |
2110 | BUF+CHARACTERS_WRITTEN. */ | |
2111 | ||
2112 | static char * | |
2113 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2114 | { | |
2115 | int pid, tid; | |
2116 | struct remote_state *rs = get_remote_state (); | |
2117 | ||
2118 | if (remote_multi_process_p (rs)) | |
2119 | { | |
2120 | pid = ptid_get_pid (ptid); | |
2121 | if (pid < 0) | |
2122 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2123 | else | |
2124 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2125 | } | |
ba348170 | 2126 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2127 | if (tid < 0) |
2128 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2129 | else | |
2130 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2131 | ||
2132 | return buf; | |
2133 | } | |
2134 | ||
2135 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2136 | passed the last parsed char. Returns null_ptid on error. */ | |
2137 | ||
2138 | static ptid_t | |
2139 | read_ptid (char *buf, char **obuf) | |
2140 | { | |
2141 | char *p = buf; | |
2142 | char *pp; | |
2143 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2144 | |
2145 | if (*p == 'p') | |
2146 | { | |
2147 | /* Multi-process ptid. */ | |
2148 | pp = unpack_varlen_hex (p + 1, &pid); | |
2149 | if (*pp != '.') | |
b37520b6 | 2150 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2151 | |
2152 | p = pp; | |
2153 | pp = unpack_varlen_hex (p + 1, &tid); | |
2154 | if (obuf) | |
2155 | *obuf = pp; | |
ba348170 | 2156 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2157 | } |
2158 | ||
2159 | /* No multi-process. Just a tid. */ | |
2160 | pp = unpack_varlen_hex (p, &tid); | |
2161 | ||
c9f35b34 KB |
2162 | /* Return null_ptid when no thread id is found. */ |
2163 | if (p == pp) | |
2164 | { | |
2165 | if (obuf) | |
2166 | *obuf = pp; | |
2167 | return null_ptid; | |
2168 | } | |
2169 | ||
82f73884 | 2170 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2171 | what's in inferior_ptid, unless it's null at this point. If so, |
2172 | then since there's no way to know the pid of the reported | |
2173 | threads, use the magic number. */ | |
2174 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2175 | pid = ptid_get_pid (magic_null_ptid); | |
2176 | else | |
2177 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2178 | |
2179 | if (obuf) | |
2180 | *obuf = pp; | |
ba348170 | 2181 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2182 | } |
2183 | ||
c906108c | 2184 | static int |
fba45db2 | 2185 | stubhex (int ch) |
c906108c SS |
2186 | { |
2187 | if (ch >= 'a' && ch <= 'f') | |
2188 | return ch - 'a' + 10; | |
2189 | if (ch >= '0' && ch <= '9') | |
2190 | return ch - '0'; | |
2191 | if (ch >= 'A' && ch <= 'F') | |
2192 | return ch - 'A' + 10; | |
2193 | return -1; | |
2194 | } | |
2195 | ||
2196 | static int | |
fba45db2 | 2197 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2198 | { |
2199 | int nibble; | |
2200 | int retval = 0; | |
2201 | ||
2202 | while (fieldlength) | |
2203 | { | |
2204 | nibble = stubhex (*buff++); | |
2205 | retval |= nibble; | |
2206 | fieldlength--; | |
2207 | if (fieldlength) | |
2208 | retval = retval << 4; | |
2209 | } | |
2210 | return retval; | |
2211 | } | |
2212 | ||
c906108c | 2213 | static char * |
fba45db2 | 2214 | unpack_nibble (char *buf, int *val) |
c906108c | 2215 | { |
b7589f7d | 2216 | *val = fromhex (*buf++); |
c906108c SS |
2217 | return buf; |
2218 | } | |
2219 | ||
c906108c | 2220 | static char * |
fba45db2 | 2221 | unpack_byte (char *buf, int *value) |
c906108c SS |
2222 | { |
2223 | *value = stub_unpack_int (buf, 2); | |
2224 | return buf + 2; | |
2225 | } | |
2226 | ||
2227 | static char * | |
fba45db2 | 2228 | pack_int (char *buf, int value) |
c906108c SS |
2229 | { |
2230 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2231 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2232 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2233 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2234 | return buf; | |
2235 | } | |
2236 | ||
2237 | static char * | |
fba45db2 | 2238 | unpack_int (char *buf, int *value) |
c906108c SS |
2239 | { |
2240 | *value = stub_unpack_int (buf, 8); | |
2241 | return buf + 8; | |
2242 | } | |
2243 | ||
23860348 | 2244 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2245 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2246 | |
2247 | static char * | |
fba45db2 | 2248 | pack_string (char *pkt, char *string) |
c906108c SS |
2249 | { |
2250 | char ch; | |
2251 | int len; | |
2252 | ||
2253 | len = strlen (string); | |
2254 | if (len > 200) | |
23860348 | 2255 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2256 | pkt = pack_hex_byte (pkt, len); |
2257 | while (len-- > 0) | |
2258 | { | |
2259 | ch = *string++; | |
2260 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2261 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2262 | *pkt++ = ch; |
2263 | } | |
2264 | return pkt; | |
2265 | } | |
2266 | #endif /* 0 (unused) */ | |
2267 | ||
2268 | static char * | |
fba45db2 | 2269 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2270 | { |
2271 | while (length--) | |
2272 | *dest++ = *src++; | |
2273 | *dest = '\0'; | |
2274 | return src; | |
2275 | } | |
2276 | ||
2277 | static char * | |
fba45db2 | 2278 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2279 | { |
2280 | char *limit; | |
2281 | unsigned char *altid; | |
2282 | ||
2283 | altid = (unsigned char *) id; | |
2284 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2285 | while (pkt < limit) | |
2286 | pkt = pack_hex_byte (pkt, *altid++); | |
2287 | return pkt; | |
2288 | } | |
2289 | ||
2290 | ||
2291 | static char * | |
fba45db2 | 2292 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2293 | { |
2294 | char *altref; | |
2295 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2296 | int x, y; | |
2297 | ||
2298 | altref = (char *) id; | |
2299 | ||
2300 | while (inbuf < limit) | |
2301 | { | |
2302 | x = stubhex (*inbuf++); | |
2303 | y = stubhex (*inbuf++); | |
2304 | *altref++ = (x << 4) | y; | |
2305 | } | |
2306 | return inbuf; | |
2307 | } | |
2308 | ||
2309 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2310 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2311 | to use 64bit thread references internally. This is an adapter |
2312 | function. */ | |
2313 | ||
2314 | void | |
fba45db2 | 2315 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2316 | { |
2317 | unsigned char *scan; | |
2318 | ||
2319 | scan = (unsigned char *) id; | |
2320 | { | |
2321 | int i = 4; | |
2322 | while (i--) | |
2323 | *scan++ = 0; | |
2324 | } | |
2325 | *scan++ = (value >> 24) & 0xff; | |
2326 | *scan++ = (value >> 16) & 0xff; | |
2327 | *scan++ = (value >> 8) & 0xff; | |
2328 | *scan++ = (value & 0xff); | |
2329 | } | |
2330 | ||
2331 | static int | |
fba45db2 | 2332 | threadref_to_int (threadref *ref) |
c906108c SS |
2333 | { |
2334 | int i, value = 0; | |
2335 | unsigned char *scan; | |
2336 | ||
cfd77fa1 | 2337 | scan = *ref; |
c906108c SS |
2338 | scan += 4; |
2339 | i = 4; | |
2340 | while (i-- > 0) | |
2341 | value = (value << 8) | ((*scan++) & 0xff); | |
2342 | return value; | |
2343 | } | |
2344 | ||
2345 | static void | |
fba45db2 | 2346 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2347 | { |
2348 | int i; | |
2349 | unsigned char *csrc, *cdest; | |
2350 | ||
2351 | csrc = (unsigned char *) src; | |
2352 | cdest = (unsigned char *) dest; | |
2353 | i = 8; | |
2354 | while (i--) | |
2355 | *cdest++ = *csrc++; | |
2356 | } | |
2357 | ||
2358 | static int | |
fba45db2 | 2359 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2360 | { |
23860348 | 2361 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2362 | #if 0 |
2363 | unsigned char *srcp, *destp; | |
2364 | int i, result; | |
2365 | srcp = (char *) src; | |
2366 | destp = (char *) dest; | |
2367 | ||
2368 | result = 1; | |
2369 | while (i-- > 0) | |
2370 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2371 | return result; | |
2372 | #endif | |
2373 | return 1; | |
2374 | } | |
2375 | ||
2376 | /* | |
c5aa993b JM |
2377 | threadid:1, # always request threadid |
2378 | context_exists:2, | |
2379 | display:4, | |
2380 | unique_name:8, | |
2381 | more_display:16 | |
2382 | */ | |
c906108c SS |
2383 | |
2384 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2385 | ||
2386 | static char * | |
fba45db2 | 2387 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2388 | { |
23860348 MS |
2389 | *pkt++ = 'q'; /* Info Query */ |
2390 | *pkt++ = 'P'; /* process or thread info */ | |
2391 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2392 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2393 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2394 | return pkt; |
2395 | } | |
2396 | ||
23860348 | 2397 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2398 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2399 | add more fields as time goes by. */ |
c906108c | 2400 | |
23860348 | 2401 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2402 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2403 | fetch registers and its stack? */ |
c5aa993b | 2404 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2405 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2406 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2407 | the process. */ |
c906108c SS |
2408 | |
2409 | static int | |
fba45db2 KB |
2410 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2411 | struct gdb_ext_thread_info *info) | |
c906108c | 2412 | { |
d01949b6 | 2413 | struct remote_state *rs = get_remote_state (); |
c906108c | 2414 | int mask, length; |
cfd77fa1 | 2415 | int tag; |
c906108c | 2416 | threadref ref; |
6d820c5c | 2417 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2418 | int retval = 1; |
2419 | ||
23860348 | 2420 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2421 | info->active = 0; |
2422 | info->display[0] = '\0'; | |
2423 | info->shortname[0] = '\0'; | |
2424 | info->more_display[0] = '\0'; | |
2425 | ||
23860348 MS |
2426 | /* Assume the characters indicating the packet type have been |
2427 | stripped. */ | |
c906108c SS |
2428 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2429 | pkt = unpack_threadid (pkt, &ref); | |
2430 | ||
2431 | if (mask == 0) | |
8a3fe4f8 | 2432 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2433 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2434 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2435 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2436 | return 0; |
2437 | } | |
2438 | copy_threadref (&info->threadid, &ref); | |
2439 | ||
23860348 | 2440 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2441 | |
23860348 MS |
2442 | /* Packets are terminated with nulls. */ |
2443 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2444 | { |
2445 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2446 | pkt = unpack_byte (pkt, &length); /* length */ |
2447 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2448 | { |
8a3fe4f8 | 2449 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2450 | retval = 0; |
2451 | break; | |
2452 | } | |
2453 | if (tag == TAG_THREADID) | |
2454 | { | |
2455 | if (length != 16) | |
2456 | { | |
8a3fe4f8 | 2457 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2458 | retval = 0; |
2459 | break; | |
2460 | } | |
2461 | pkt = unpack_threadid (pkt, &ref); | |
2462 | mask = mask & ~TAG_THREADID; | |
2463 | continue; | |
2464 | } | |
2465 | if (tag == TAG_EXISTS) | |
2466 | { | |
2467 | info->active = stub_unpack_int (pkt, length); | |
2468 | pkt += length; | |
2469 | mask = mask & ~(TAG_EXISTS); | |
2470 | if (length > 8) | |
2471 | { | |
8a3fe4f8 | 2472 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2473 | retval = 0; |
2474 | break; | |
2475 | } | |
2476 | continue; | |
2477 | } | |
2478 | if (tag == TAG_THREADNAME) | |
2479 | { | |
2480 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2481 | mask = mask & ~TAG_THREADNAME; | |
2482 | continue; | |
2483 | } | |
2484 | if (tag == TAG_DISPLAY) | |
2485 | { | |
2486 | pkt = unpack_string (pkt, &info->display[0], length); | |
2487 | mask = mask & ~TAG_DISPLAY; | |
2488 | continue; | |
2489 | } | |
2490 | if (tag == TAG_MOREDISPLAY) | |
2491 | { | |
2492 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2493 | mask = mask & ~TAG_MOREDISPLAY; | |
2494 | continue; | |
2495 | } | |
8a3fe4f8 | 2496 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2497 | break; /* Not a tag we know about. */ |
c906108c SS |
2498 | } |
2499 | return retval; | |
2500 | } | |
2501 | ||
2502 | static int | |
fba45db2 KB |
2503 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2504 | struct gdb_ext_thread_info *info) | |
c906108c | 2505 | { |
d01949b6 | 2506 | struct remote_state *rs = get_remote_state (); |
c906108c | 2507 | int result; |
c906108c | 2508 | |
2e9f7625 DJ |
2509 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2510 | putpkt (rs->buf); | |
6d820c5c | 2511 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2512 | |
2513 | if (rs->buf[0] == '\0') | |
2514 | return 0; | |
2515 | ||
2e9f7625 | 2516 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2517 | threadid, info); |
c906108c SS |
2518 | return result; |
2519 | } | |
2520 | ||
c906108c SS |
2521 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2522 | ||
2523 | static char * | |
fba45db2 KB |
2524 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2525 | threadref *nextthread) | |
c906108c SS |
2526 | { |
2527 | *pkt++ = 'q'; /* info query packet */ | |
2528 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2529 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2530 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2531 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2532 | *pkt = '\0'; | |
2533 | return pkt; | |
2534 | } | |
2535 | ||
2536 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2537 | ||
2538 | static int | |
fba45db2 KB |
2539 | parse_threadlist_response (char *pkt, int result_limit, |
2540 | threadref *original_echo, threadref *resultlist, | |
2541 | int *doneflag) | |
c906108c | 2542 | { |
d01949b6 | 2543 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2544 | char *limit; |
2545 | int count, resultcount, done; | |
2546 | ||
2547 | resultcount = 0; | |
2548 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2549 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2550 | /* done parse past here */ |
c906108c SS |
2551 | pkt = unpack_byte (pkt, &count); /* count field */ |
2552 | pkt = unpack_nibble (pkt, &done); | |
2553 | /* The first threadid is the argument threadid. */ | |
2554 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2555 | while ((count-- > 0) && (pkt < limit)) | |
2556 | { | |
2557 | pkt = unpack_threadid (pkt, resultlist++); | |
2558 | if (resultcount++ >= result_limit) | |
2559 | break; | |
2560 | } | |
2561 | if (doneflag) | |
2562 | *doneflag = done; | |
2563 | return resultcount; | |
2564 | } | |
2565 | ||
6dc54d91 PA |
2566 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2567 | qL packet is not supported, 0 on error and 1 on success. */ | |
2568 | ||
c906108c | 2569 | static int |
fba45db2 KB |
2570 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2571 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2572 | { |
d01949b6 | 2573 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2574 | int result = 1; |
2575 | ||
23860348 | 2576 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2577 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2578 | >= get_remote_packet_size ()) | |
ea9c271d | 2579 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2580 | |
6d820c5c DJ |
2581 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2582 | putpkt (rs->buf); | |
2583 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2584 | if (*rs->buf == '\0') |
6dc54d91 PA |
2585 | { |
2586 | /* Packet not supported. */ | |
2587 | return -1; | |
2588 | } | |
2589 | ||
2590 | *result_count = | |
2591 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2592 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2593 | |
0d031856 | 2594 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2595 | { |
23860348 MS |
2596 | /* FIXME: This is a good reason to drop the packet. */ |
2597 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2598 | /* Possabilities : |
2599 | retransmit immediatly - race conditions | |
2600 | retransmit after timeout - yes | |
2601 | exit | |
2602 | wait for packet, then exit | |
2603 | */ | |
8a3fe4f8 | 2604 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2605 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2606 | } |
2607 | if (*result_count <= 0) | |
2608 | { | |
2609 | if (*done != 1) | |
2610 | { | |
8a3fe4f8 | 2611 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2612 | result = 0; |
2613 | } | |
2614 | return result; /* break; */ | |
2615 | } | |
2616 | if (*result_count > result_limit) | |
2617 | { | |
2618 | *result_count = 0; | |
8a3fe4f8 | 2619 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2620 | return 0; |
2621 | } | |
2622 | return result; | |
2623 | } | |
2624 | ||
6dc54d91 PA |
2625 | /* Fetch the list of remote threads, with the qL packet, and call |
2626 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2627 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2628 | STEPFUNCTION returns false. If the packet is not supported, | |
2629 | returns -1. */ | |
c906108c | 2630 | |
c906108c | 2631 | static int |
fba45db2 KB |
2632 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2633 | int looplimit) | |
c906108c | 2634 | { |
0d031856 | 2635 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2636 | int done, i, result_count; |
2637 | int startflag = 1; | |
2638 | int result = 1; | |
2639 | int loopcount = 0; | |
c906108c SS |
2640 | |
2641 | done = 0; | |
2642 | while (!done) | |
2643 | { | |
2644 | if (loopcount++ > looplimit) | |
2645 | { | |
2646 | result = 0; | |
8a3fe4f8 | 2647 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2648 | break; |
2649 | } | |
6dc54d91 PA |
2650 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2651 | MAXTHREADLISTRESULTS, | |
2652 | &done, &result_count, | |
2653 | rs->resultthreadlist); | |
2654 | if (result <= 0) | |
2655 | break; | |
23860348 | 2656 | /* Clear for later iterations. */ |
c906108c SS |
2657 | startflag = 0; |
2658 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2659 | if (result_count >= 1) | |
0d031856 TT |
2660 | copy_threadref (&rs->nextthread, |
2661 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2662 | i = 0; |
2663 | while (result_count--) | |
6dc54d91 PA |
2664 | { |
2665 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2666 | { | |
2667 | result = 0; | |
2668 | break; | |
2669 | } | |
2670 | } | |
c906108c SS |
2671 | } |
2672 | return result; | |
2673 | } | |
2674 | ||
6dc54d91 PA |
2675 | /* A thread found on the remote target. */ |
2676 | ||
2677 | typedef struct thread_item | |
2678 | { | |
2679 | /* The thread's PTID. */ | |
2680 | ptid_t ptid; | |
2681 | ||
2682 | /* The thread's extra info. May be NULL. */ | |
2683 | char *extra; | |
2684 | ||
2685 | /* The core the thread was running on. -1 if not known. */ | |
2686 | int core; | |
2687 | } thread_item_t; | |
2688 | DEF_VEC_O(thread_item_t); | |
2689 | ||
2690 | /* Context passed around to the various methods listing remote | |
2691 | threads. As new threads are found, they're added to the ITEMS | |
2692 | vector. */ | |
2693 | ||
2694 | struct threads_listing_context | |
2695 | { | |
2696 | /* The threads found on the remote target. */ | |
2697 | VEC (thread_item_t) *items; | |
2698 | }; | |
2699 | ||
80134cf5 PA |
2700 | /* Discard the contents of the constructed thread listing context. */ |
2701 | ||
2702 | static void | |
2703 | clear_threads_listing_context (void *p) | |
2704 | { | |
2705 | struct threads_listing_context *context = p; | |
2706 | int i; | |
2707 | struct thread_item *item; | |
2708 | ||
2709 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2710 | xfree (item->extra); | |
2711 | ||
2712 | VEC_free (thread_item_t, context->items); | |
2713 | } | |
2714 | ||
cbb8991c DB |
2715 | /* Remove the thread specified as the related_pid field of WS |
2716 | from the CONTEXT list. */ | |
2717 | ||
2718 | static void | |
2719 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2720 | struct threads_listing_context *context) | |
2721 | { | |
2722 | struct thread_item *item; | |
2723 | int i; | |
2724 | ptid_t child_ptid = ws->value.related_pid; | |
2725 | ||
2726 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2727 | { | |
2728 | if (ptid_equal (item->ptid, child_ptid)) | |
2729 | { | |
2730 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2731 | break; | |
2732 | } | |
2733 | } | |
2734 | } | |
2735 | ||
c906108c | 2736 | static int |
6dc54d91 | 2737 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2738 | { |
6dc54d91 PA |
2739 | struct threads_listing_context *context = data; |
2740 | struct thread_item item; | |
79d7f229 | 2741 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2742 | |
6dc54d91 PA |
2743 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2744 | item.core = -1; | |
2745 | item.extra = NULL; | |
2746 | ||
2747 | VEC_safe_push (thread_item_t, context->items, &item); | |
2748 | ||
c906108c SS |
2749 | return 1; /* continue iterator */ |
2750 | } | |
2751 | ||
2752 | #define CRAZY_MAX_THREADS 1000 | |
2753 | ||
39f77062 KB |
2754 | static ptid_t |
2755 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2756 | { |
d01949b6 | 2757 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2758 | |
2759 | putpkt ("qC"); | |
6d820c5c | 2760 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2761 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2762 | { |
2763 | char *obuf; | |
2764 | ptid_t result; | |
2765 | ||
2766 | result = read_ptid (&rs->buf[2], &obuf); | |
2767 | if (*obuf != '\0' && remote_debug) | |
2768 | fprintf_unfiltered (gdb_stdlog, | |
2769 | "warning: garbage in qC reply\n"); | |
2770 | ||
2771 | return result; | |
2772 | } | |
c906108c SS |
2773 | else |
2774 | return oldpid; | |
2775 | } | |
2776 | ||
6dc54d91 | 2777 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2778 | |
6dc54d91 PA |
2779 | static int |
2780 | remote_get_threads_with_ql (struct target_ops *ops, | |
2781 | struct threads_listing_context *context) | |
c906108c | 2782 | { |
6dc54d91 PA |
2783 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2784 | CRAZY_MAX_THREADS) >= 0) | |
2785 | return 1; | |
2786 | ||
2787 | return 0; | |
c906108c SS |
2788 | } |
2789 | ||
dc146f7c VP |
2790 | #if defined(HAVE_LIBEXPAT) |
2791 | ||
dc146f7c VP |
2792 | static void |
2793 | start_thread (struct gdb_xml_parser *parser, | |
2794 | const struct gdb_xml_element *element, | |
2795 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2796 | { | |
6dc54d91 | 2797 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2798 | |
2799 | struct thread_item item; | |
2800 | char *id; | |
3d2c1d41 | 2801 | struct gdb_xml_value *attr; |
dc146f7c | 2802 | |
3d2c1d41 | 2803 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2804 | item.ptid = read_ptid (id, NULL); |
2805 | ||
3d2c1d41 PA |
2806 | attr = xml_find_attribute (attributes, "core"); |
2807 | if (attr != NULL) | |
2808 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2809 | else |
2810 | item.core = -1; | |
2811 | ||
2812 | item.extra = 0; | |
2813 | ||
2814 | VEC_safe_push (thread_item_t, data->items, &item); | |
2815 | } | |
2816 | ||
2817 | static void | |
2818 | end_thread (struct gdb_xml_parser *parser, | |
2819 | const struct gdb_xml_element *element, | |
2820 | void *user_data, const char *body_text) | |
2821 | { | |
6dc54d91 | 2822 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2823 | |
2824 | if (body_text && *body_text) | |
2ae2a0b7 | 2825 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2826 | } |
2827 | ||
2828 | const struct gdb_xml_attribute thread_attributes[] = { | |
2829 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2830 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2831 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2832 | }; | |
2833 | ||
2834 | const struct gdb_xml_element thread_children[] = { | |
2835 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2836 | }; | |
2837 | ||
2838 | const struct gdb_xml_element threads_children[] = { | |
2839 | { "thread", thread_attributes, thread_children, | |
2840 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2841 | start_thread, end_thread }, | |
2842 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2843 | }; | |
2844 | ||
2845 | const struct gdb_xml_element threads_elements[] = { | |
2846 | { "threads", NULL, threads_children, | |
2847 | GDB_XML_EF_NONE, NULL, NULL }, | |
2848 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2849 | }; | |
2850 | ||
2851 | #endif | |
2852 | ||
6dc54d91 | 2853 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2854 | |
6dc54d91 PA |
2855 | static int |
2856 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2857 | struct threads_listing_context *context) | |
0f71a2f6 | 2858 | { |
dc146f7c | 2859 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2860 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2861 | { |
6dc54d91 | 2862 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2863 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2864 | |
6dc54d91 | 2865 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2866 | { |
6dc54d91 PA |
2867 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2868 | threads_elements, xml, context); | |
dc146f7c VP |
2869 | } |
2870 | ||
2871 | do_cleanups (back_to); | |
6dc54d91 | 2872 | return 1; |
dc146f7c VP |
2873 | } |
2874 | #endif | |
2875 | ||
6dc54d91 PA |
2876 | return 0; |
2877 | } | |
2878 | ||
2879 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2880 | ||
2881 | static int | |
2882 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2883 | struct threads_listing_context *context) | |
2884 | { | |
2885 | struct remote_state *rs = get_remote_state (); | |
2886 | ||
b80fafe3 | 2887 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2888 | { |
6dc54d91 PA |
2889 | char *bufp; |
2890 | ||
9d1f7ab2 | 2891 | putpkt ("qfThreadInfo"); |
6d820c5c | 2892 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2893 | bufp = rs->buf; |
9d1f7ab2 | 2894 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2895 | { |
9d1f7ab2 MS |
2896 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2897 | { | |
2898 | do | |
2899 | { | |
6dc54d91 PA |
2900 | struct thread_item item; |
2901 | ||
2902 | item.ptid = read_ptid (bufp, &bufp); | |
2903 | item.core = -1; | |
2904 | item.extra = NULL; | |
2905 | ||
2906 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
2907 | } |
2908 | while (*bufp++ == ','); /* comma-separated list */ | |
2909 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2910 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 2911 | bufp = rs->buf; |
9d1f7ab2 | 2912 | } |
6dc54d91 PA |
2913 | return 1; |
2914 | } | |
2915 | else | |
2916 | { | |
2917 | /* Packet not recognized. */ | |
2918 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
2919 | } |
2920 | } | |
2921 | ||
6dc54d91 PA |
2922 | return 0; |
2923 | } | |
2924 | ||
e8032dde | 2925 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
2926 | targets. */ |
2927 | ||
2928 | static void | |
e8032dde | 2929 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
2930 | { |
2931 | struct remote_state *rs = get_remote_state (); | |
2932 | struct threads_listing_context context; | |
2933 | struct cleanup *old_chain; | |
ab970af1 | 2934 | int got_list = 0; |
e8032dde | 2935 | |
6dc54d91 PA |
2936 | context.items = NULL; |
2937 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2938 | ||
2939 | /* We have a few different mechanisms to fetch the thread list. Try | |
2940 | them all, starting with the most preferred one first, falling | |
2941 | back to older methods. */ | |
2942 | if (remote_get_threads_with_qxfer (ops, &context) | |
2943 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2944 | || remote_get_threads_with_ql (ops, &context)) | |
2945 | { | |
2946 | int i; | |
2947 | struct thread_item *item; | |
ab970af1 PA |
2948 | struct thread_info *tp, *tmp; |
2949 | ||
2950 | got_list = 1; | |
2951 | ||
7d1a114c PA |
2952 | if (VEC_empty (thread_item_t, context.items) |
2953 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2954 | { | |
2955 | /* Some targets don't really support threads, but still | |
2956 | reply an (empty) thread list in response to the thread | |
2957 | listing packets, instead of replying "packet not | |
2958 | supported". Exit early so we don't delete the main | |
2959 | thread. */ | |
2960 | do_cleanups (old_chain); | |
2961 | return; | |
2962 | } | |
2963 | ||
ab970af1 PA |
2964 | /* CONTEXT now holds the current thread list on the remote |
2965 | target end. Delete GDB-side threads no longer found on the | |
2966 | target. */ | |
8a06aea7 | 2967 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 2968 | { |
ab970af1 PA |
2969 | for (i = 0; |
2970 | VEC_iterate (thread_item_t, context.items, i, item); | |
2971 | ++i) | |
2972 | { | |
2973 | if (ptid_equal (item->ptid, tp->ptid)) | |
2974 | break; | |
2975 | } | |
2976 | ||
2977 | if (i == VEC_length (thread_item_t, context.items)) | |
2978 | { | |
2979 | /* Not found. */ | |
2980 | delete_thread (tp->ptid); | |
2981 | } | |
cbb8991c DB |
2982 | } |
2983 | ||
2984 | /* Remove any unreported fork child threads from CONTEXT so | |
2985 | that we don't interfere with follow fork, which is where | |
2986 | creation of such threads is handled. */ | |
2987 | remove_new_fork_children (&context); | |
74531fed | 2988 | |
ab970af1 | 2989 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
2990 | for (i = 0; |
2991 | VEC_iterate (thread_item_t, context.items, i, item); | |
2992 | ++i) | |
2993 | { | |
2994 | if (!ptid_equal (item->ptid, null_ptid)) | |
2995 | { | |
2996 | struct private_thread_info *info; | |
2997 | /* In non-stop mode, we assume new found threads are | |
2998 | running until proven otherwise with a stop reply. In | |
2999 | all-stop, we can only get here if all threads are | |
3000 | stopped. */ | |
3001 | int running = non_stop ? 1 : 0; | |
3002 | ||
3003 | remote_notice_new_inferior (item->ptid, running); | |
3004 | ||
3005 | info = demand_private_info (item->ptid); | |
3006 | info->core = item->core; | |
3007 | info->extra = item->extra; | |
3008 | item->extra = NULL; | |
3009 | } | |
3010 | } | |
3011 | } | |
3012 | ||
ab970af1 PA |
3013 | if (!got_list) |
3014 | { | |
3015 | /* If no thread listing method is supported, then query whether | |
3016 | each known thread is alive, one by one, with the T packet. | |
3017 | If the target doesn't support threads at all, then this is a | |
3018 | no-op. See remote_thread_alive. */ | |
3019 | prune_threads (); | |
3020 | } | |
3021 | ||
6dc54d91 | 3022 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3023 | } |
3024 | ||
802188a7 | 3025 | /* |
9d1f7ab2 MS |
3026 | * Collect a descriptive string about the given thread. |
3027 | * The target may say anything it wants to about the thread | |
3028 | * (typically info about its blocked / runnable state, name, etc.). | |
3029 | * This string will appear in the info threads display. | |
802188a7 | 3030 | * |
9d1f7ab2 MS |
3031 | * Optional: targets are not required to implement this function. |
3032 | */ | |
3033 | ||
3034 | static char * | |
c15906d8 | 3035 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3036 | { |
d01949b6 | 3037 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3038 | int result; |
3039 | int set; | |
3040 | threadref id; | |
3041 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3042 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3043 | int n = 0; /* position in display_buf */ |
3044 | ||
5d93a237 | 3045 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3046 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3047 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3048 | |
60e569b9 | 3049 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3050 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3051 | /* This is the main thread which was added by GDB. The remote |
3052 | server doesn't know about it. */ | |
3053 | return NULL; | |
3054 | ||
4082afcc | 3055 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3056 | { |
3057 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3058 | |
fe978cb0 PA |
3059 | if (info && info->priv) |
3060 | return info->priv->extra; | |
dc146f7c VP |
3061 | else |
3062 | return NULL; | |
3063 | } | |
3064 | ||
b80fafe3 | 3065 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3066 | { |
82f73884 PA |
3067 | char *b = rs->buf; |
3068 | char *endb = rs->buf + get_remote_packet_size (); | |
3069 | ||
3070 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3071 | b += strlen (b); | |
3072 | write_ptid (b, endb, tp->ptid); | |
3073 | ||
2e9f7625 | 3074 | putpkt (rs->buf); |
6d820c5c | 3075 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3076 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3077 | { |
2e9f7625 DJ |
3078 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3079 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3080 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3081 | return display_buf; |
3082 | } | |
0f71a2f6 | 3083 | } |
9d1f7ab2 MS |
3084 | |
3085 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3086 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3087 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3088 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3089 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3090 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3091 | if (threadinfo.active) | |
0f71a2f6 | 3092 | { |
9d1f7ab2 | 3093 | if (*threadinfo.shortname) |
2bc416ba | 3094 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3095 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3096 | if (*threadinfo.display) |
2bc416ba | 3097 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3098 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3099 | if (*threadinfo.more_display) |
2bc416ba | 3100 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3101 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3102 | |
3103 | if (n > 0) | |
c5aa993b | 3104 | { |
23860348 | 3105 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3106 | if (',' == display_buf[n-1]) |
3107 | display_buf[n-1] = ' '; | |
3108 | return display_buf; | |
c5aa993b | 3109 | } |
0f71a2f6 | 3110 | } |
9d1f7ab2 | 3111 | return NULL; |
0f71a2f6 | 3112 | } |
c906108c | 3113 | \f |
c5aa993b | 3114 | |
0fb4aa4b | 3115 | static int |
61fc905d | 3116 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3117 | struct static_tracepoint_marker *marker) |
3118 | { | |
3119 | struct remote_state *rs = get_remote_state (); | |
3120 | char *p = rs->buf; | |
3121 | ||
bba74b36 | 3122 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3123 | p += strlen (p); |
3124 | p += hexnumstr (p, addr); | |
3125 | putpkt (rs->buf); | |
3126 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3127 | p = rs->buf; | |
3128 | ||
3129 | if (*p == 'E') | |
3130 | error (_("Remote failure reply: %s"), p); | |
3131 | ||
3132 | if (*p++ == 'm') | |
3133 | { | |
3134 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3135 | return 1; | |
3136 | } | |
3137 | ||
3138 | return 0; | |
3139 | } | |
3140 | ||
0fb4aa4b | 3141 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3142 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3143 | const char *strid) | |
0fb4aa4b PA |
3144 | { |
3145 | struct remote_state *rs = get_remote_state (); | |
3146 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3147 | struct static_tracepoint_marker *marker = NULL; | |
3148 | struct cleanup *old_chain; | |
3149 | char *p; | |
3150 | ||
3151 | /* Ask for a first packet of static tracepoint marker | |
3152 | definition. */ | |
3153 | putpkt ("qTfSTM"); | |
3154 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3155 | p = rs->buf; | |
3156 | if (*p == 'E') | |
3157 | error (_("Remote failure reply: %s"), p); | |
3158 | ||
3159 | old_chain = make_cleanup (free_current_marker, &marker); | |
3160 | ||
3161 | while (*p++ == 'm') | |
3162 | { | |
3163 | if (marker == NULL) | |
3164 | marker = XCNEW (struct static_tracepoint_marker); | |
3165 | ||
3166 | do | |
3167 | { | |
3168 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3169 | ||
3170 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3171 | { | |
3172 | VEC_safe_push (static_tracepoint_marker_p, | |
3173 | markers, marker); | |
3174 | marker = NULL; | |
3175 | } | |
3176 | else | |
3177 | { | |
3178 | release_static_tracepoint_marker (marker); | |
3179 | memset (marker, 0, sizeof (*marker)); | |
3180 | } | |
3181 | } | |
3182 | while (*p++ == ','); /* comma-separated list */ | |
3183 | /* Ask for another packet of static tracepoint definition. */ | |
3184 | putpkt ("qTsSTM"); | |
3185 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3186 | p = rs->buf; | |
3187 | } | |
3188 | ||
3189 | do_cleanups (old_chain); | |
3190 | return markers; | |
3191 | } | |
3192 | ||
3193 | \f | |
10760264 JB |
3194 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3195 | ||
3196 | static ptid_t | |
1e6b91a4 | 3197 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3198 | { |
ba348170 | 3199 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3200 | } |
3201 | \f | |
3202 | ||
24b06219 | 3203 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3204 | |
3205 | static void | |
fba45db2 | 3206 | extended_remote_restart (void) |
c906108c | 3207 | { |
d01949b6 | 3208 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3209 | |
3210 | /* Send the restart command; for reasons I don't understand the | |
3211 | remote side really expects a number after the "R". */ | |
ea9c271d | 3212 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3213 | putpkt (rs->buf); |
c906108c | 3214 | |
ad9a8f3f | 3215 | remote_fileio_reset (); |
c906108c SS |
3216 | } |
3217 | \f | |
3218 | /* Clean up connection to a remote debugger. */ | |
3219 | ||
c906108c | 3220 | static void |
de90e03d | 3221 | remote_close (struct target_ops *self) |
c906108c | 3222 | { |
5d93a237 TT |
3223 | struct remote_state *rs = get_remote_state (); |
3224 | ||
3225 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3226 | return; /* already closed */ |
3227 | ||
3228 | /* Make sure we leave stdin registered in the event loop, and we | |
3229 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3230 | remote_terminal_ours (self); |
ce5ce7ed | 3231 | |
5d93a237 TT |
3232 | serial_close (rs->remote_desc); |
3233 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3234 | |
3235 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3236 | of all the inferiors and their threads we were controlling. |
3237 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3238 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3239 | inferior_ptid = null_ptid; |
f67fd822 | 3240 | discard_all_inferiors (); |
ce5ce7ed | 3241 | |
f48ff2a7 YQ |
3242 | /* We are closing the remote target, so we should discard |
3243 | everything of this target. */ | |
bcc75809 | 3244 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3245 | |
3246 | if (remote_async_inferior_event_token) | |
3247 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3248 | |
5965e028 | 3249 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3250 | |
3251 | trace_reset_local_state (); | |
c906108c SS |
3252 | } |
3253 | ||
23860348 | 3254 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3255 | |
3256 | static void | |
fba45db2 | 3257 | get_offsets (void) |
c906108c | 3258 | { |
d01949b6 | 3259 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3260 | char *buf; |
085dd6e6 | 3261 | char *ptr; |
31d99776 DJ |
3262 | int lose, num_segments = 0, do_sections, do_segments; |
3263 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3264 | struct section_offsets *offs; |
31d99776 DJ |
3265 | struct symfile_segment_data *data; |
3266 | ||
3267 | if (symfile_objfile == NULL) | |
3268 | return; | |
c906108c SS |
3269 | |
3270 | putpkt ("qOffsets"); | |
6d820c5c | 3271 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3272 | buf = rs->buf; |
c906108c SS |
3273 | |
3274 | if (buf[0] == '\000') | |
3275 | return; /* Return silently. Stub doesn't support | |
23860348 | 3276 | this command. */ |
c906108c SS |
3277 | if (buf[0] == 'E') |
3278 | { | |
8a3fe4f8 | 3279 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3280 | return; |
3281 | } | |
3282 | ||
3283 | /* Pick up each field in turn. This used to be done with scanf, but | |
3284 | scanf will make trouble if CORE_ADDR size doesn't match | |
3285 | conversion directives correctly. The following code will work | |
3286 | with any size of CORE_ADDR. */ | |
3287 | text_addr = data_addr = bss_addr = 0; | |
3288 | ptr = buf; | |
3289 | lose = 0; | |
3290 | ||
61012eef | 3291 | if (startswith (ptr, "Text=")) |
c906108c SS |
3292 | { |
3293 | ptr += 5; | |
3294 | /* Don't use strtol, could lose on big values. */ | |
3295 | while (*ptr && *ptr != ';') | |
3296 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3297 | |
61012eef | 3298 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3299 | { |
3300 | ptr += 6; | |
3301 | while (*ptr && *ptr != ';') | |
3302 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3303 | } | |
3304 | else | |
3305 | lose = 1; | |
3306 | ||
61012eef | 3307 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3308 | { |
3309 | ptr += 5; | |
3310 | while (*ptr && *ptr != ';') | |
3311 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3312 | |
31d99776 DJ |
3313 | if (bss_addr != data_addr) |
3314 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3315 | } | |
3316 | else | |
3317 | lose = 1; | |
3318 | } | |
61012eef | 3319 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3320 | { |
31d99776 DJ |
3321 | ptr += 8; |
3322 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3323 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3324 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3325 | num_segments = 1; | |
3326 | ||
61012eef | 3327 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3328 | { |
3329 | ptr += 9; | |
3330 | while (*ptr && *ptr != ';') | |
3331 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3332 | num_segments++; | |
3333 | } | |
c906108c SS |
3334 | } |
3335 | else | |
3336 | lose = 1; | |
3337 | ||
3338 | if (lose) | |
8a3fe4f8 | 3339 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3340 | else if (*ptr != '\0') |
3341 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3342 | |
802188a7 | 3343 | offs = ((struct section_offsets *) |
a39a16c4 | 3344 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3345 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3346 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3347 | |
31d99776 DJ |
3348 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3349 | do_segments = (data != NULL); | |
3350 | do_sections = num_segments == 0; | |
c906108c | 3351 | |
28c32713 | 3352 | if (num_segments > 0) |
31d99776 | 3353 | { |
31d99776 DJ |
3354 | segments[0] = text_addr; |
3355 | segments[1] = data_addr; | |
3356 | } | |
28c32713 JB |
3357 | /* If we have two segments, we can still try to relocate everything |
3358 | by assuming that the .text and .data offsets apply to the whole | |
3359 | text and data segments. Convert the offsets given in the packet | |
3360 | to base addresses for symfile_map_offsets_to_segments. */ | |
3361 | else if (data && data->num_segments == 2) | |
3362 | { | |
3363 | segments[0] = data->segment_bases[0] + text_addr; | |
3364 | segments[1] = data->segment_bases[1] + data_addr; | |
3365 | num_segments = 2; | |
3366 | } | |
8d385431 DJ |
3367 | /* If the object file has only one segment, assume that it is text |
3368 | rather than data; main programs with no writable data are rare, | |
3369 | but programs with no code are useless. Of course the code might | |
3370 | have ended up in the data segment... to detect that we would need | |
3371 | the permissions here. */ | |
3372 | else if (data && data->num_segments == 1) | |
3373 | { | |
3374 | segments[0] = data->segment_bases[0] + text_addr; | |
3375 | num_segments = 1; | |
3376 | } | |
28c32713 JB |
3377 | /* There's no way to relocate by segment. */ |
3378 | else | |
3379 | do_segments = 0; | |
31d99776 DJ |
3380 | |
3381 | if (do_segments) | |
3382 | { | |
3383 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3384 | offs, num_segments, segments); | |
3385 | ||
3386 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3387 | error (_("Can not handle qOffsets TextSeg " |
3388 | "response with this symbol file")); | |
31d99776 DJ |
3389 | |
3390 | if (ret > 0) | |
3391 | do_sections = 0; | |
3392 | } | |
c906108c | 3393 | |
9ef895d6 DJ |
3394 | if (data) |
3395 | free_symfile_segment_data (data); | |
31d99776 DJ |
3396 | |
3397 | if (do_sections) | |
3398 | { | |
3399 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3400 | ||
3e43a32a MS |
3401 | /* This is a temporary kludge to force data and bss to use the |
3402 | same offsets because that's what nlmconv does now. The real | |
3403 | solution requires changes to the stub and remote.c that I | |
3404 | don't have time to do right now. */ | |
31d99776 DJ |
3405 | |
3406 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3407 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3408 | } | |
c906108c SS |
3409 | |
3410 | objfile_relocate (symfile_objfile, offs); | |
3411 | } | |
3412 | ||
74531fed PA |
3413 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3414 | threads we know are stopped already. This is used during the | |
3415 | initial remote connection in non-stop mode --- threads that are | |
3416 | reported as already being stopped are left stopped. */ | |
3417 | ||
3418 | static int | |
3419 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3420 | { | |
3421 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3422 | if (peek_stop_reply (thread->ptid)) | |
3423 | set_stop_requested (thread->ptid, 1); | |
3424 | ||
3425 | return 0; | |
3426 | } | |
3427 | ||
9a7071a8 JB |
3428 | /* Send interrupt_sequence to remote target. */ |
3429 | static void | |
eeae04df | 3430 | send_interrupt_sequence (void) |
9a7071a8 | 3431 | { |
5d93a237 TT |
3432 | struct remote_state *rs = get_remote_state (); |
3433 | ||
9a7071a8 | 3434 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3435 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3436 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3437 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3438 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3439 | { | |
5d93a237 | 3440 | serial_send_break (rs->remote_desc); |
c33e31fd | 3441 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3442 | } |
3443 | else | |
3444 | internal_error (__FILE__, __LINE__, | |
3445 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3446 | interrupt_sequence_mode); | |
3447 | } | |
3448 | ||
3405876a PA |
3449 | |
3450 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3451 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3452 | ||
3453 | static ptid_t | |
3454 | stop_reply_extract_thread (char *stop_reply) | |
3455 | { | |
3456 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3457 | { | |
3458 | char *p; | |
3459 | ||
3460 | /* Txx r:val ; r:val (...) */ | |
3461 | p = &stop_reply[3]; | |
3462 | ||
3463 | /* Look for "register" named "thread". */ | |
3464 | while (*p != '\0') | |
3465 | { | |
3466 | char *p1; | |
3467 | ||
3468 | p1 = strchr (p, ':'); | |
3469 | if (p1 == NULL) | |
3470 | return null_ptid; | |
3471 | ||
3472 | if (strncmp (p, "thread", p1 - p) == 0) | |
3473 | return read_ptid (++p1, &p); | |
3474 | ||
3475 | p1 = strchr (p, ';'); | |
3476 | if (p1 == NULL) | |
3477 | return null_ptid; | |
3478 | p1++; | |
3479 | ||
3480 | p = p1; | |
3481 | } | |
3482 | } | |
3483 | ||
3484 | return null_ptid; | |
3485 | } | |
3486 | ||
b7ea362b PA |
3487 | /* Determine the remote side's current thread. If we have a stop |
3488 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3489 | "thread" register we can extract the current thread from. If not, | |
3490 | ask the remote which is the current thread with qC. The former | |
3491 | method avoids a roundtrip. */ | |
3492 | ||
3493 | static ptid_t | |
3494 | get_current_thread (char *wait_status) | |
3495 | { | |
6a49a997 | 3496 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3497 | |
3498 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3499 | the target architecture, which we haven't yet fully determined at | |
3500 | this point. */ | |
3501 | if (wait_status != NULL) | |
3502 | ptid = stop_reply_extract_thread (wait_status); | |
3503 | if (ptid_equal (ptid, null_ptid)) | |
3504 | ptid = remote_current_thread (inferior_ptid); | |
3505 | ||
3506 | return ptid; | |
3507 | } | |
3508 | ||
49c62f2e PA |
3509 | /* Query the remote target for which is the current thread/process, |
3510 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3511 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3512 | to return the current thread. |
3513 | ||
3514 | This function is called after handling the '?' or 'vRun' packets, | |
3515 | whose response is a stop reply from which we can also try | |
3516 | extracting the thread. If the target doesn't support the explicit | |
3517 | qC query, we infer the current thread from that stop reply, passed | |
3518 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3519 | |
3520 | static void | |
3405876a | 3521 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3522 | { |
3523 | struct remote_state *rs = get_remote_state (); | |
3524 | int fake_pid_p = 0; | |
6a49a997 | 3525 | ptid_t ptid; |
49c62f2e PA |
3526 | |
3527 | inferior_ptid = null_ptid; | |
3528 | ||
b7ea362b PA |
3529 | /* Now, if we have thread information, update inferior_ptid. */ |
3530 | ptid = get_current_thread (wait_status); | |
3405876a | 3531 | |
49c62f2e PA |
3532 | if (!ptid_equal (ptid, null_ptid)) |
3533 | { | |
3534 | if (!remote_multi_process_p (rs)) | |
3535 | fake_pid_p = 1; | |
3536 | ||
3537 | inferior_ptid = ptid; | |
3538 | } | |
3539 | else | |
3540 | { | |
3541 | /* Without this, some commands which require an active target | |
3542 | (such as kill) won't work. This variable serves (at least) | |
3543 | double duty as both the pid of the target process (if it has | |
3544 | such), and as a flag indicating that a target is active. */ | |
3545 | inferior_ptid = magic_null_ptid; | |
3546 | fake_pid_p = 1; | |
3547 | } | |
3548 | ||
1b6e6f5c | 3549 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3550 | |
3551 | /* Add the main thread. */ | |
3552 | add_thread_silent (inferior_ptid); | |
3553 | } | |
3554 | ||
9cbc821d | 3555 | static void |
04bd08de | 3556 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3557 | { |
c8d104ad PA |
3558 | struct remote_state *rs = get_remote_state (); |
3559 | struct packet_config *noack_config; | |
2d717e4f | 3560 | char *wait_status = NULL; |
8621d6a9 | 3561 | |
23860348 | 3562 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3563 | QUIT; |
c906108c | 3564 | |
9a7071a8 JB |
3565 | if (interrupt_on_connect) |
3566 | send_interrupt_sequence (); | |
3567 | ||
57e12211 | 3568 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3569 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3570 | |
1e51243a PA |
3571 | /* Signal other parts that we're going through the initial setup, |
3572 | and so things may not be stable yet. */ | |
3573 | rs->starting_up = 1; | |
3574 | ||
c8d104ad PA |
3575 | /* The first packet we send to the target is the optional "supported |
3576 | packets" request. If the target can answer this, it will tell us | |
3577 | which later probes to skip. */ | |
3578 | remote_query_supported (); | |
3579 | ||
d914c394 | 3580 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3581 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3582 | remote_set_permissions (target); |
d914c394 | 3583 | |
c8d104ad PA |
3584 | /* Next, we possibly activate noack mode. |
3585 | ||
3586 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3587 | enable noack mode if the stub reported a wish for it with | |
3588 | qSupported. | |
3589 | ||
3590 | If set to TRUE, then enable noack mode even if the stub didn't | |
3591 | report it in qSupported. If the stub doesn't reply OK, the | |
3592 | session ends with an error. | |
3593 | ||
3594 | If FALSE, then don't activate noack mode, regardless of what the | |
3595 | stub claimed should be the default with qSupported. */ | |
3596 | ||
3597 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3598 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3599 | { |
3600 | putpkt ("QStartNoAckMode"); | |
3601 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3602 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3603 | rs->noack_mode = 1; | |
3604 | } | |
3605 | ||
04bd08de | 3606 | if (extended_p) |
5fe04517 PA |
3607 | { |
3608 | /* Tell the remote that we are using the extended protocol. */ | |
3609 | putpkt ("!"); | |
3610 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3611 | } | |
3612 | ||
9b224c5e PA |
3613 | /* Let the target know which signals it is allowed to pass down to |
3614 | the program. */ | |
3615 | update_signals_program_target (); | |
3616 | ||
d962ef82 DJ |
3617 | /* Next, if the target can specify a description, read it. We do |
3618 | this before anything involving memory or registers. */ | |
3619 | target_find_description (); | |
3620 | ||
6c95b8df PA |
3621 | /* Next, now that we know something about the target, update the |
3622 | address spaces in the program spaces. */ | |
3623 | update_address_spaces (); | |
3624 | ||
50c71eaf PA |
3625 | /* On OSs where the list of libraries is global to all |
3626 | processes, we fetch them early. */ | |
f5656ead | 3627 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3628 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3629 | |
74531fed PA |
3630 | if (non_stop) |
3631 | { | |
4082afcc | 3632 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3633 | error (_("Non-stop mode requested, but remote " |
3634 | "does not support non-stop")); | |
74531fed PA |
3635 | |
3636 | putpkt ("QNonStop:1"); | |
3637 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3638 | ||
3639 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3640 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3641 | |
3642 | /* Find about threads and processes the stub is already | |
3643 | controlling. We default to adding them in the running state. | |
3644 | The '?' query below will then tell us about which threads are | |
3645 | stopped. */ | |
e8032dde | 3646 | remote_update_thread_list (target); |
74531fed | 3647 | } |
4082afcc | 3648 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3649 | { |
3650 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3651 | Request it explicitly. */ |
74531fed PA |
3652 | putpkt ("QNonStop:0"); |
3653 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3654 | ||
3655 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3656 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3657 | } |
3658 | ||
a0743c90 YQ |
3659 | /* Upload TSVs regardless of whether the target is running or not. The |
3660 | remote stub, such as GDBserver, may have some predefined or builtin | |
3661 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3662 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3663 | { |
3664 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3665 | ||
181e3713 | 3666 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3667 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3668 | } | |
3669 | ||
2d717e4f DJ |
3670 | /* Check whether the target is running now. */ |
3671 | putpkt ("?"); | |
3672 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3673 | ||
74531fed | 3674 | if (!non_stop) |
2d717e4f | 3675 | { |
e714e1bf UW |
3676 | ptid_t ptid; |
3677 | int fake_pid_p = 0; | |
3678 | struct inferior *inf; | |
3679 | ||
74531fed | 3680 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3681 | { |
04bd08de | 3682 | if (!extended_p) |
74531fed | 3683 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3684 | |
3685 | /* We're connected, but not running. Drop out before we | |
3686 | call start_remote. */ | |
e278ad5b | 3687 | rs->starting_up = 0; |
c35b1492 | 3688 | return; |
2d717e4f DJ |
3689 | } |
3690 | else | |
74531fed | 3691 | { |
74531fed PA |
3692 | /* Save the reply for later. */ |
3693 | wait_status = alloca (strlen (rs->buf) + 1); | |
3694 | strcpy (wait_status, rs->buf); | |
3695 | } | |
3696 | ||
b7ea362b | 3697 | /* Fetch thread list. */ |
e8032dde | 3698 | target_update_thread_list (); |
b7ea362b | 3699 | |
74531fed PA |
3700 | /* Let the stub know that we want it to return the thread. */ |
3701 | set_continue_thread (minus_one_ptid); | |
3702 | ||
b7ea362b PA |
3703 | if (thread_count () == 0) |
3704 | { | |
3705 | /* Target has no concept of threads at all. GDB treats | |
3706 | non-threaded target as single-threaded; add a main | |
3707 | thread. */ | |
3708 | add_current_inferior_and_thread (wait_status); | |
3709 | } | |
3710 | else | |
3711 | { | |
3712 | /* We have thread information; select the thread the target | |
3713 | says should be current. If we're reconnecting to a | |
3714 | multi-threaded program, this will ideally be the thread | |
3715 | that last reported an event before GDB disconnected. */ | |
3716 | inferior_ptid = get_current_thread (wait_status); | |
3717 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3718 | { | |
3719 | /* Odd... The target was able to list threads, but not | |
3720 | tell us which thread was current (no "thread" | |
3721 | register in T stop reply?). Just pick the first | |
3722 | thread in the thread list then. */ | |
c9f35b34 KB |
3723 | |
3724 | if (remote_debug) | |
3725 | fprintf_unfiltered (gdb_stdlog, | |
3726 | "warning: couldn't determine remote " | |
3727 | "current thread; picking first in list.\n"); | |
3728 | ||
b7ea362b PA |
3729 | inferior_ptid = thread_list->ptid; |
3730 | } | |
3731 | } | |
74531fed | 3732 | |
6e586cc5 YQ |
3733 | /* init_wait_for_inferior should be called before get_offsets in order |
3734 | to manage `inserted' flag in bp loc in a correct state. | |
3735 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3736 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3737 | start_remote, set `inserted' flag to 1. In the initialization of | |
3738 | inferior, breakpoint_init_inferior should be called first, and then | |
3739 | breakpoint_re_set can be called. If this order is broken, state of | |
3740 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3741 | manipulation. */ | |
3742 | init_wait_for_inferior (); | |
3743 | ||
74531fed PA |
3744 | get_offsets (); /* Get text, data & bss offsets. */ |
3745 | ||
d962ef82 DJ |
3746 | /* If we could not find a description using qXfer, and we know |
3747 | how to do it some other way, try again. This is not | |
3748 | supported for non-stop; it could be, but it is tricky if | |
3749 | there are no stopped threads when we connect. */ | |
04bd08de | 3750 | if (remote_read_description_p (target) |
f5656ead | 3751 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3752 | { |
3753 | target_clear_description (); | |
3754 | target_find_description (); | |
3755 | } | |
3756 | ||
74531fed PA |
3757 | /* Use the previously fetched status. */ |
3758 | gdb_assert (wait_status != NULL); | |
3759 | strcpy (rs->buf, wait_status); | |
3760 | rs->cached_wait_status = 1; | |
3761 | ||
3762 | immediate_quit--; | |
04bd08de | 3763 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3764 | } |
3765 | else | |
3766 | { | |
68c97600 PA |
3767 | /* Clear WFI global state. Do this before finding about new |
3768 | threads and inferiors, and setting the current inferior. | |
3769 | Otherwise we would clear the proceed status of the current | |
3770 | inferior when we want its stop_soon state to be preserved | |
3771 | (see notice_new_inferior). */ | |
3772 | init_wait_for_inferior (); | |
3773 | ||
74531fed PA |
3774 | /* In non-stop, we will either get an "OK", meaning that there |
3775 | are no stopped threads at this time; or, a regular stop | |
3776 | reply. In the latter case, there may be more than one thread | |
3777 | stopped --- we pull them all out using the vStopped | |
3778 | mechanism. */ | |
3779 | if (strcmp (rs->buf, "OK") != 0) | |
3780 | { | |
722247f1 | 3781 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3782 | |
722247f1 YQ |
3783 | /* remote_notif_get_pending_replies acks this one, and gets |
3784 | the rest out. */ | |
f48ff2a7 | 3785 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3786 | = remote_notif_parse (notif, rs->buf); |
3787 | remote_notif_get_pending_events (notif); | |
c906108c | 3788 | |
74531fed PA |
3789 | /* Make sure that threads that were stopped remain |
3790 | stopped. */ | |
3791 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3792 | } | |
2d717e4f | 3793 | |
74531fed | 3794 | if (target_can_async_p ()) |
6a3753b3 | 3795 | target_async (1); |
c906108c | 3796 | |
74531fed PA |
3797 | if (thread_count () == 0) |
3798 | { | |
04bd08de | 3799 | if (!extended_p) |
74531fed | 3800 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3801 | |
c35b1492 PA |
3802 | /* We're connected, but not running. Drop out before we |
3803 | call start_remote. */ | |
e278ad5b | 3804 | rs->starting_up = 0; |
c35b1492 PA |
3805 | return; |
3806 | } | |
74531fed PA |
3807 | |
3808 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3809 | |
74531fed PA |
3810 | /* Force the stub to choose a thread. */ |
3811 | set_general_thread (null_ptid); | |
c906108c | 3812 | |
74531fed PA |
3813 | /* Query it. */ |
3814 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3815 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3816 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3817 | |
74531fed PA |
3818 | get_offsets (); /* Get text, data & bss offsets. */ |
3819 | ||
3820 | /* In non-stop mode, any cached wait status will be stored in | |
3821 | the stop reply queue. */ | |
3822 | gdb_assert (wait_status == NULL); | |
f0223081 | 3823 | |
2455069d | 3824 | /* Report all signals during attach/startup. */ |
94bedb42 | 3825 | remote_pass_signals (target, 0, NULL); |
74531fed | 3826 | } |
c8d104ad | 3827 | |
c8d104ad PA |
3828 | /* If we connected to a live target, do some additional setup. */ |
3829 | if (target_has_execution) | |
3830 | { | |
f4ccffad | 3831 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3832 | remote_check_symbols (); |
c8d104ad | 3833 | } |
50c71eaf | 3834 | |
d5551862 SS |
3835 | /* Possibly the target has been engaged in a trace run started |
3836 | previously; find out where things are at. */ | |
8bd200f1 | 3837 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3838 | { |
00bf0b85 | 3839 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3840 | |
00bf0b85 SS |
3841 | if (current_trace_status ()->running) |
3842 | printf_filtered (_("Trace is already running on the target.\n")); | |
3843 | ||
ab6617cc | 3844 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3845 | |
3846 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3847 | } |
3848 | ||
1e51243a PA |
3849 | /* The thread and inferior lists are now synchronized with the |
3850 | target, our symbols have been relocated, and we're merged the | |
3851 | target's tracepoints with ours. We're done with basic start | |
3852 | up. */ | |
3853 | rs->starting_up = 0; | |
3854 | ||
a25a5a45 PA |
3855 | /* Maybe breakpoints are global and need to be inserted now. */ |
3856 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 3857 | insert_breakpoints (); |
c906108c SS |
3858 | } |
3859 | ||
3860 | /* Open a connection to a remote debugger. | |
3861 | NAME is the filename used for communication. */ | |
3862 | ||
3863 | static void | |
014f9477 | 3864 | remote_open (const char *name, int from_tty) |
c906108c | 3865 | { |
75c99385 | 3866 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3867 | } |
3868 | ||
c906108c SS |
3869 | /* Open a connection to a remote debugger using the extended |
3870 | remote gdb protocol. NAME is the filename used for communication. */ | |
3871 | ||
3872 | static void | |
014f9477 | 3873 | extended_remote_open (const char *name, int from_tty) |
c906108c | 3874 | { |
75c99385 | 3875 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3876 | } |
3877 | ||
ca4f7f8b PA |
3878 | /* Reset all packets back to "unknown support". Called when opening a |
3879 | new connection to a remote target. */ | |
c906108c | 3880 | |
d471ea57 | 3881 | static void |
ca4f7f8b | 3882 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3883 | { |
3884 | int i; | |
a744cf53 | 3885 | |
444abaca | 3886 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3887 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3888 | } |
3889 | ||
ca4f7f8b PA |
3890 | /* Initialize all packet configs. */ |
3891 | ||
3892 | static void | |
3893 | init_all_packet_configs (void) | |
3894 | { | |
3895 | int i; | |
3896 | ||
3897 | for (i = 0; i < PACKET_MAX; i++) | |
3898 | { | |
3899 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3900 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3901 | } | |
3902 | } | |
3903 | ||
23860348 | 3904 | /* Symbol look-up. */ |
dc8acb97 MS |
3905 | |
3906 | static void | |
36d25514 | 3907 | remote_check_symbols (void) |
dc8acb97 | 3908 | { |
d01949b6 | 3909 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 3910 | char *msg, *reply, *tmp; |
3b7344d5 | 3911 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
3912 | int end; |
3913 | ||
63154eca PA |
3914 | /* The remote side has no concept of inferiors that aren't running |
3915 | yet, it only knows about running processes. If we're connected | |
3916 | but our current inferior is not running, we should not invite the | |
3917 | remote target to request symbol lookups related to its | |
3918 | (unrelated) current process. */ | |
3919 | if (!target_has_execution) | |
3920 | return; | |
3921 | ||
4082afcc | 3922 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
3923 | return; |
3924 | ||
63154eca PA |
3925 | /* Make sure the remote is pointing at the right process. Note |
3926 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3927 | set_general_process (); |
3928 | ||
6d820c5c DJ |
3929 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3930 | because we need both at the same time. */ | |
ea9c271d | 3931 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3932 | |
23860348 | 3933 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3934 | |
3935 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3936 | getpkt (&rs->buf, &rs->buf_size, 0); |
3937 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3938 | reply = rs->buf; |
dc8acb97 | 3939 | |
61012eef | 3940 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 3941 | { |
77e371c0 TT |
3942 | struct bound_minimal_symbol sym; |
3943 | ||
dc8acb97 | 3944 | tmp = &reply[8]; |
cfd77fa1 | 3945 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3946 | msg[end] = '\0'; |
3947 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 3948 | if (sym.minsym == NULL) |
ea9c271d | 3949 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3950 | else |
2bbe3cc1 | 3951 | { |
f5656ead | 3952 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 3953 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
3954 | |
3955 | /* If this is a function address, return the start of code | |
3956 | instead of any data function descriptor. */ | |
f5656ead | 3957 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3958 | sym_addr, |
3959 | ¤t_target); | |
3960 | ||
3961 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3962 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3963 | } |
3964 | ||
dc8acb97 | 3965 | putpkt (msg); |
6d820c5c | 3966 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3967 | reply = rs->buf; |
dc8acb97 MS |
3968 | } |
3969 | } | |
3970 | ||
9db8d71f | 3971 | static struct serial * |
baa336ce | 3972 | remote_serial_open (const char *name) |
9db8d71f DJ |
3973 | { |
3974 | static int udp_warning = 0; | |
3975 | ||
3976 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3977 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3978 | serial connection is reliable and not the serial connection promising | |
3979 | to be. */ | |
61012eef | 3980 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 3981 | { |
3e43a32a MS |
3982 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3983 | "Some events may be lost, rendering further debugging " | |
3984 | "impossible.")); | |
9db8d71f DJ |
3985 | udp_warning = 1; |
3986 | } | |
3987 | ||
3988 | return serial_open (name); | |
3989 | } | |
3990 | ||
d914c394 SS |
3991 | /* Inform the target of our permission settings. The permission flags |
3992 | work without this, but if the target knows the settings, it can do | |
3993 | a couple things. First, it can add its own check, to catch cases | |
3994 | that somehow manage to get by the permissions checks in target | |
3995 | methods. Second, if the target is wired to disallow particular | |
3996 | settings (for instance, a system in the field that is not set up to | |
3997 | be able to stop at a breakpoint), it can object to any unavailable | |
3998 | permissions. */ | |
3999 | ||
4000 | void | |
c378d69d | 4001 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4002 | { |
4003 | struct remote_state *rs = get_remote_state (); | |
4004 | ||
bba74b36 YQ |
4005 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4006 | "WriteReg:%x;WriteMem:%x;" | |
4007 | "InsertBreak:%x;InsertTrace:%x;" | |
4008 | "InsertFastTrace:%x;Stop:%x", | |
4009 | may_write_registers, may_write_memory, | |
4010 | may_insert_breakpoints, may_insert_tracepoints, | |
4011 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4012 | putpkt (rs->buf); |
4013 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4014 | ||
4015 | /* If the target didn't like the packet, warn the user. Do not try | |
4016 | to undo the user's settings, that would just be maddening. */ | |
4017 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4018 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4019 | } |
4020 | ||
be2a5f71 DJ |
4021 | /* This type describes each known response to the qSupported |
4022 | packet. */ | |
4023 | struct protocol_feature | |
4024 | { | |
4025 | /* The name of this protocol feature. */ | |
4026 | const char *name; | |
4027 | ||
4028 | /* The default for this protocol feature. */ | |
4029 | enum packet_support default_support; | |
4030 | ||
4031 | /* The function to call when this feature is reported, or after | |
4032 | qSupported processing if the feature is not supported. | |
4033 | The first argument points to this structure. The second | |
4034 | argument indicates whether the packet requested support be | |
4035 | enabled, disabled, or probed (or the default, if this function | |
4036 | is being called at the end of processing and this feature was | |
4037 | not reported). The third argument may be NULL; if not NULL, it | |
4038 | is a NUL-terminated string taken from the packet following | |
4039 | this feature's name and an equals sign. */ | |
4040 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4041 | const char *); | |
4042 | ||
4043 | /* The corresponding packet for this feature. Only used if | |
4044 | FUNC is remote_supported_packet. */ | |
4045 | int packet; | |
4046 | }; | |
4047 | ||
be2a5f71 DJ |
4048 | static void |
4049 | remote_supported_packet (const struct protocol_feature *feature, | |
4050 | enum packet_support support, | |
4051 | const char *argument) | |
4052 | { | |
4053 | if (argument) | |
4054 | { | |
4055 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4056 | " \"%s\"."), feature->name); | |
4057 | return; | |
4058 | } | |
4059 | ||
4082afcc | 4060 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4061 | } |
be2a5f71 DJ |
4062 | |
4063 | static void | |
4064 | remote_packet_size (const struct protocol_feature *feature, | |
4065 | enum packet_support support, const char *value) | |
4066 | { | |
4067 | struct remote_state *rs = get_remote_state (); | |
4068 | ||
4069 | int packet_size; | |
4070 | char *value_end; | |
4071 | ||
4072 | if (support != PACKET_ENABLE) | |
4073 | return; | |
4074 | ||
4075 | if (value == NULL || *value == '\0') | |
4076 | { | |
4077 | warning (_("Remote target reported \"%s\" without a size."), | |
4078 | feature->name); | |
4079 | return; | |
4080 | } | |
4081 | ||
4082 | errno = 0; | |
4083 | packet_size = strtol (value, &value_end, 16); | |
4084 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4085 | { | |
4086 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4087 | feature->name, value); | |
4088 | return; | |
4089 | } | |
4090 | ||
4091 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
4092 | { | |
4093 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
4094 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
4095 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
4096 | } | |
4097 | ||
4098 | /* Record the new maximum packet size. */ | |
4099 | rs->explicit_packet_size = packet_size; | |
4100 | } | |
4101 | ||
dc473cfb | 4102 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4103 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4104 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4105 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4106 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4107 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4108 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4109 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4110 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4111 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4112 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4113 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4114 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4115 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4116 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4117 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4118 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4119 | PACKET_qXfer_spu_read }, | |
4120 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4121 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4122 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4123 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4124 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4125 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4126 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4127 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4128 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4129 | PACKET_QPassSignals }, | |
9b224c5e PA |
4130 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4131 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4132 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4133 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4134 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4135 | PACKET_multiprocess_feature }, | |
4136 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4137 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4138 | PACKET_qXfer_siginfo_read }, | |
4139 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4140 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4141 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4142 | PACKET_ConditionalTracepoints }, |
4082afcc | 4143 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4144 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4145 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4146 | PACKET_BreakpointCommands }, |
4082afcc | 4147 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4148 | PACKET_FastTracepoints }, |
4082afcc | 4149 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4150 | PACKET_StaticTracepoints }, |
4082afcc | 4151 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4152 | PACKET_InstallInTrace}, |
4082afcc PA |
4153 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4154 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4155 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4156 | PACKET_bc }, | |
4157 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4158 | PACKET_bs }, | |
409873ef SS |
4159 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4160 | PACKET_TracepointSource }, | |
d914c394 SS |
4161 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4162 | PACKET_QAllow }, | |
4082afcc PA |
4163 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4164 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4165 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4166 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4167 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4168 | PACKET_qXfer_uib }, | |
03583c20 UW |
4169 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4170 | PACKET_QDisableRandomization }, | |
d1feda86 | 4171 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4172 | { "QTBuffer:size", PACKET_DISABLE, |
4173 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4174 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4175 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4176 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4177 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4178 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4179 | PACKET_qXfer_btrace }, |
4180 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4181 | PACKET_qXfer_btrace_conf }, |
4182 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4183 | PACKET_Qbtrace_conf_bts_size }, |
4184 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4185 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4186 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4187 | PACKET_fork_event_feature }, | |
4188 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4189 | PACKET_vfork_event_feature }, | |
b20a6524 MM |
4190 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
4191 | PACKET_Qbtrace_conf_pt_size } | |
be2a5f71 DJ |
4192 | }; |
4193 | ||
c8d5aac9 L |
4194 | static char *remote_support_xml; |
4195 | ||
4196 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4197 | ||
4198 | void | |
6e39997a | 4199 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4200 | { |
4201 | #if defined(HAVE_LIBEXPAT) | |
4202 | if (remote_support_xml == NULL) | |
c4f7c687 | 4203 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4204 | else |
4205 | { | |
4206 | char *copy = xstrdup (remote_support_xml + 13); | |
4207 | char *p = strtok (copy, ","); | |
4208 | ||
4209 | do | |
4210 | { | |
4211 | if (strcmp (p, xml) == 0) | |
4212 | { | |
4213 | /* already there */ | |
4214 | xfree (copy); | |
4215 | return; | |
4216 | } | |
4217 | } | |
4218 | while ((p = strtok (NULL, ",")) != NULL); | |
4219 | xfree (copy); | |
4220 | ||
94b0dee1 PA |
4221 | remote_support_xml = reconcat (remote_support_xml, |
4222 | remote_support_xml, ",", xml, | |
4223 | (char *) NULL); | |
c8d5aac9 L |
4224 | } |
4225 | #endif | |
4226 | } | |
4227 | ||
4228 | static char * | |
4229 | remote_query_supported_append (char *msg, const char *append) | |
4230 | { | |
4231 | if (msg) | |
94b0dee1 | 4232 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4233 | else |
4234 | return xstrdup (append); | |
4235 | } | |
4236 | ||
be2a5f71 DJ |
4237 | static void |
4238 | remote_query_supported (void) | |
4239 | { | |
4240 | struct remote_state *rs = get_remote_state (); | |
4241 | char *next; | |
4242 | int i; | |
4243 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4244 | ||
4245 | /* The packet support flags are handled differently for this packet | |
4246 | than for most others. We treat an error, a disabled packet, and | |
4247 | an empty response identically: any features which must be reported | |
4248 | to be used will be automatically disabled. An empty buffer | |
4249 | accomplishes this, since that is also the representation for a list | |
4250 | containing no features. */ | |
4251 | ||
4252 | rs->buf[0] = 0; | |
4082afcc | 4253 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4254 | { |
c8d5aac9 | 4255 | char *q = NULL; |
94b0dee1 | 4256 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4257 | |
901f9912 | 4258 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 | 4259 | |
f7e6eed5 PA |
4260 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4261 | q = remote_query_supported_append (q, "swbreak+"); | |
4262 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4263 | q = remote_query_supported_append (q, "hwbreak+"); | |
4264 | ||
c8d5aac9 L |
4265 | if (remote_support_xml) |
4266 | q = remote_query_supported_append (q, remote_support_xml); | |
4267 | ||
dde08ee1 PA |
4268 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4269 | ||
89245bc0 DB |
4270 | if (rs->extended) |
4271 | { | |
4272 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4273 | != AUTO_BOOLEAN_FALSE) | |
4274 | q = remote_query_supported_append (q, "fork-events+"); | |
4275 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4276 | != AUTO_BOOLEAN_FALSE) | |
4277 | q = remote_query_supported_append (q, "vfork-events+"); | |
4278 | } | |
4279 | ||
dde08ee1 PA |
4280 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4281 | putpkt (q); | |
82f73884 | 4282 | |
94b0dee1 PA |
4283 | do_cleanups (old_chain); |
4284 | ||
be2a5f71 DJ |
4285 | getpkt (&rs->buf, &rs->buf_size, 0); |
4286 | ||
4287 | /* If an error occured, warn, but do not return - just reset the | |
4288 | buffer to empty and go on to disable features. */ | |
4289 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4290 | == PACKET_ERROR) | |
4291 | { | |
4292 | warning (_("Remote failure reply: %s"), rs->buf); | |
4293 | rs->buf[0] = 0; | |
4294 | } | |
4295 | } | |
4296 | ||
4297 | memset (seen, 0, sizeof (seen)); | |
4298 | ||
4299 | next = rs->buf; | |
4300 | while (*next) | |
4301 | { | |
4302 | enum packet_support is_supported; | |
4303 | char *p, *end, *name_end, *value; | |
4304 | ||
4305 | /* First separate out this item from the rest of the packet. If | |
4306 | there's another item after this, we overwrite the separator | |
4307 | (terminated strings are much easier to work with). */ | |
4308 | p = next; | |
4309 | end = strchr (p, ';'); | |
4310 | if (end == NULL) | |
4311 | { | |
4312 | end = p + strlen (p); | |
4313 | next = end; | |
4314 | } | |
4315 | else | |
4316 | { | |
89be2091 DJ |
4317 | *end = '\0'; |
4318 | next = end + 1; | |
4319 | ||
be2a5f71 DJ |
4320 | if (end == p) |
4321 | { | |
4322 | warning (_("empty item in \"qSupported\" response")); | |
4323 | continue; | |
4324 | } | |
be2a5f71 DJ |
4325 | } |
4326 | ||
4327 | name_end = strchr (p, '='); | |
4328 | if (name_end) | |
4329 | { | |
4330 | /* This is a name=value entry. */ | |
4331 | is_supported = PACKET_ENABLE; | |
4332 | value = name_end + 1; | |
4333 | *name_end = '\0'; | |
4334 | } | |
4335 | else | |
4336 | { | |
4337 | value = NULL; | |
4338 | switch (end[-1]) | |
4339 | { | |
4340 | case '+': | |
4341 | is_supported = PACKET_ENABLE; | |
4342 | break; | |
4343 | ||
4344 | case '-': | |
4345 | is_supported = PACKET_DISABLE; | |
4346 | break; | |
4347 | ||
4348 | case '?': | |
4349 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4350 | break; | |
4351 | ||
4352 | default: | |
3e43a32a MS |
4353 | warning (_("unrecognized item \"%s\" " |
4354 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4355 | continue; |
4356 | } | |
4357 | end[-1] = '\0'; | |
4358 | } | |
4359 | ||
4360 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4361 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4362 | { | |
4363 | const struct protocol_feature *feature; | |
4364 | ||
4365 | seen[i] = 1; | |
4366 | feature = &remote_protocol_features[i]; | |
4367 | feature->func (feature, is_supported, value); | |
4368 | break; | |
4369 | } | |
4370 | } | |
4371 | ||
4372 | /* If we increased the packet size, make sure to increase the global | |
4373 | buffer size also. We delay this until after parsing the entire | |
4374 | qSupported packet, because this is the same buffer we were | |
4375 | parsing. */ | |
4376 | if (rs->buf_size < rs->explicit_packet_size) | |
4377 | { | |
4378 | rs->buf_size = rs->explicit_packet_size; | |
4379 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4380 | } | |
4381 | ||
4382 | /* Handle the defaults for unmentioned features. */ | |
4383 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4384 | if (!seen[i]) | |
4385 | { | |
4386 | const struct protocol_feature *feature; | |
4387 | ||
4388 | feature = &remote_protocol_features[i]; | |
4389 | feature->func (feature, feature->default_support, NULL); | |
4390 | } | |
4391 | } | |
4392 | ||
78a095c3 JK |
4393 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4394 | on it so remove them first. */ | |
4395 | ||
4396 | static void | |
4397 | remote_unpush_target (void) | |
4398 | { | |
4399 | pop_all_targets_above (process_stratum - 1); | |
4400 | } | |
be2a5f71 | 4401 | |
c906108c | 4402 | static void |
014f9477 | 4403 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4404 | struct target_ops *target, int extended_p) |
c906108c | 4405 | { |
d01949b6 | 4406 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4407 | |
c906108c | 4408 | if (name == 0) |
8a3fe4f8 | 4409 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4410 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4411 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4412 | |
23860348 | 4413 | /* See FIXME above. */ |
c6ebd6cf | 4414 | if (!target_async_permitted) |
92d1e331 | 4415 | wait_forever_enabled_p = 1; |
6426a772 | 4416 | |
2d717e4f | 4417 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4418 | Ask this question first, before target_preopen has a chance to kill |
4419 | anything. */ | |
5d93a237 | 4420 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4421 | { |
78a095c3 JK |
4422 | if (from_tty |
4423 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4424 | error (_("Still connected.")); |
4425 | } | |
4426 | ||
78a095c3 | 4427 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4428 | target_preopen (from_tty); |
4429 | ||
89be2091 | 4430 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4431 | xfree (rs->last_pass_packet); |
4432 | rs->last_pass_packet = NULL; | |
89be2091 | 4433 | |
9b224c5e PA |
4434 | /* Make sure we send the program signals list the next time we |
4435 | resume. */ | |
5e4a05c4 TT |
4436 | xfree (rs->last_program_signals_packet); |
4437 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4438 | |
ad9a8f3f | 4439 | remote_fileio_reset (); |
1dd41f16 NS |
4440 | reopen_exec_file (); |
4441 | reread_symbols (); | |
4442 | ||
5d93a237 TT |
4443 | rs->remote_desc = remote_serial_open (name); |
4444 | if (!rs->remote_desc) | |
c906108c SS |
4445 | perror_with_name (name); |
4446 | ||
4447 | if (baud_rate != -1) | |
4448 | { | |
5d93a237 | 4449 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4450 | { |
9b74d5d3 KB |
4451 | /* The requested speed could not be set. Error out to |
4452 | top level after closing remote_desc. Take care to | |
4453 | set remote_desc to NULL to avoid closing remote_desc | |
4454 | more than once. */ | |
5d93a237 TT |
4455 | serial_close (rs->remote_desc); |
4456 | rs->remote_desc = NULL; | |
c906108c SS |
4457 | perror_with_name (name); |
4458 | } | |
4459 | } | |
4460 | ||
236af5e3 | 4461 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4462 | serial_raw (rs->remote_desc); |
c906108c SS |
4463 | |
4464 | /* If there is something sitting in the buffer we might take it as a | |
4465 | response to a command, which would be bad. */ | |
5d93a237 | 4466 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4467 | |
4468 | if (from_tty) | |
4469 | { | |
4470 | puts_filtered ("Remote debugging using "); | |
4471 | puts_filtered (name); | |
4472 | puts_filtered ("\n"); | |
4473 | } | |
23860348 | 4474 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4475 | |
74531fed PA |
4476 | /* Register extra event sources in the event loop. */ |
4477 | remote_async_inferior_event_token | |
4478 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4479 | NULL); | |
5965e028 | 4480 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4481 | |
be2a5f71 DJ |
4482 | /* Reset the target state; these things will be queried either by |
4483 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4484 | reset_all_packet_configs_support (); |
74531fed | 4485 | rs->cached_wait_status = 0; |
be2a5f71 | 4486 | rs->explicit_packet_size = 0; |
a6f3e723 | 4487 | rs->noack_mode = 0; |
82f73884 | 4488 | rs->extended = extended_p; |
e24a49d8 | 4489 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4490 | rs->ctrlc_pending_p = 0; |
802188a7 | 4491 | |
47f8a51d TT |
4492 | rs->general_thread = not_sent_ptid; |
4493 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4494 | rs->remote_traceframe_number = -1; |
c906108c | 4495 | |
9d1f7ab2 | 4496 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4497 | rs->use_threadinfo_query = 1; |
4498 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4499 | |
c6ebd6cf | 4500 | if (target_async_permitted) |
92d1e331 | 4501 | { |
23860348 | 4502 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4503 | remote_async_terminal_ours_p = 1; |
4504 | ||
4505 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4506 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4507 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4508 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4509 | around this. Eventually a mechanism that allows |
92d1e331 | 4510 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4511 | implemented. */ |
92d1e331 DJ |
4512 | wait_forever_enabled_p = 0; |
4513 | } | |
4514 | ||
23860348 | 4515 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4516 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4517 | |
74531fed PA |
4518 | /* Start afresh. */ |
4519 | init_thread_list (); | |
4520 | ||
36918e70 | 4521 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4522 | target (we'd otherwise be in an inconsistent state) and then |
4523 | propogate the error on up the exception chain. This ensures that | |
4524 | the caller doesn't stumble along blindly assuming that the | |
4525 | function succeeded. The CLI doesn't have this problem but other | |
4526 | UI's, such as MI do. | |
36918e70 AC |
4527 | |
4528 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4529 | this function should return an error indication letting the | |
ce2826aa | 4530 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4531 | ``target remote'' is directly wired to this function making that |
4532 | impossible. On a positive note, the CLI side of this problem has | |
4533 | been fixed - the function set_cmd_context() makes it possible for | |
4534 | all the ``target ....'' commands to share a common callback | |
4535 | function. See cli-dump.c. */ | |
109c3e39 | 4536 | { |
2d717e4f | 4537 | |
492d29ea | 4538 | TRY |
04bd08de TT |
4539 | { |
4540 | remote_start_remote (from_tty, target, extended_p); | |
4541 | } | |
492d29ea | 4542 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4543 | { |
c8d104ad PA |
4544 | /* Pop the partially set up target - unless something else did |
4545 | already before throwing the exception. */ | |
5d93a237 | 4546 | if (rs->remote_desc != NULL) |
78a095c3 | 4547 | remote_unpush_target (); |
c6ebd6cf | 4548 | if (target_async_permitted) |
109c3e39 AC |
4549 | wait_forever_enabled_p = 1; |
4550 | throw_exception (ex); | |
4551 | } | |
492d29ea | 4552 | END_CATCH |
109c3e39 | 4553 | } |
c906108c | 4554 | |
f4abbc16 MM |
4555 | remote_btrace_reset (); |
4556 | ||
c6ebd6cf | 4557 | if (target_async_permitted) |
92d1e331 | 4558 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4559 | } |
4560 | ||
de0d863e DB |
4561 | /* Detach the specified process. */ |
4562 | ||
4563 | static void | |
4564 | remote_detach_pid (int pid) | |
4565 | { | |
4566 | struct remote_state *rs = get_remote_state (); | |
4567 | ||
4568 | if (remote_multi_process_p (rs)) | |
4569 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4570 | else | |
4571 | strcpy (rs->buf, "D"); | |
4572 | ||
4573 | putpkt (rs->buf); | |
4574 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4575 | ||
4576 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4577 | ; | |
4578 | else if (rs->buf[0] == '\0') | |
4579 | error (_("Remote doesn't know how to detach")); | |
4580 | else | |
4581 | error (_("Can't detach process.")); | |
4582 | } | |
4583 | ||
4584 | /* This detaches a program to which we previously attached, using | |
4585 | inferior_ptid to identify the process. After this is done, GDB | |
4586 | can be used to debug some other program. We better not have left | |
4587 | any breakpoints in the target program or it'll die when it hits | |
4588 | one. */ | |
c906108c SS |
4589 | |
4590 | static void | |
de0d863e | 4591 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4592 | { |
82f73884 | 4593 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4594 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4595 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4596 | int is_fork_parent; | |
c906108c SS |
4597 | |
4598 | if (args) | |
8a3fe4f8 | 4599 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4600 | |
2d717e4f DJ |
4601 | if (!target_has_execution) |
4602 | error (_("No process to detach from.")); | |
4603 | ||
7cee1e54 PA |
4604 | if (from_tty) |
4605 | { | |
4606 | char *exec_file = get_exec_file (0); | |
4607 | if (exec_file == NULL) | |
4608 | exec_file = ""; | |
4609 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4610 | target_pid_to_str (pid_to_ptid (pid))); | |
4611 | gdb_flush (gdb_stdout); | |
4612 | } | |
4613 | ||
c906108c | 4614 | /* Tell the remote target to detach. */ |
de0d863e | 4615 | remote_detach_pid (pid); |
82f73884 | 4616 | |
de0d863e | 4617 | if (from_tty && !rs->extended) |
7cee1e54 | 4618 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4619 | |
de0d863e DB |
4620 | /* Check to see if we are detaching a fork parent. Note that if we |
4621 | are detaching a fork child, tp == NULL. */ | |
4622 | is_fork_parent = (tp != NULL | |
4623 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4624 | ||
4625 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4626 | breakpoints that should be available for the followed inferior. */ | |
4627 | if (!is_fork_parent) | |
4628 | target_mourn_inferior (); | |
4629 | else | |
4630 | { | |
4631 | inferior_ptid = null_ptid; | |
4632 | detach_inferior (pid); | |
4633 | } | |
2d717e4f DJ |
4634 | } |
4635 | ||
4636 | static void | |
52554a0e | 4637 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4638 | { |
de0d863e | 4639 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4640 | } |
4641 | ||
4642 | static void | |
52554a0e | 4643 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4644 | { |
de0d863e DB |
4645 | remote_detach_1 (args, from_tty); |
4646 | } | |
4647 | ||
4648 | /* Target follow-fork function for remote targets. On entry, and | |
4649 | at return, the current inferior is the fork parent. | |
4650 | ||
4651 | Note that although this is currently only used for extended-remote, | |
4652 | it is named remote_follow_fork in anticipation of using it for the | |
4653 | remote target as well. */ | |
4654 | ||
4655 | static int | |
4656 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4657 | int detach_fork) | |
4658 | { | |
4659 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 4660 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 4661 | |
c269dbdb DB |
4662 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
4663 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
4664 | { |
4665 | /* When following the parent and detaching the child, we detach | |
4666 | the child here. For the case of following the child and | |
4667 | detaching the parent, the detach is done in the target- | |
4668 | independent follow fork code in infrun.c. We can't use | |
4669 | target_detach when detaching an unfollowed child because | |
4670 | the client side doesn't know anything about the child. */ | |
4671 | if (detach_fork && !follow_child) | |
4672 | { | |
4673 | /* Detach the fork child. */ | |
4674 | ptid_t child_ptid; | |
4675 | pid_t child_pid; | |
4676 | ||
4677 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4678 | child_pid = ptid_get_pid (child_ptid); | |
4679 | ||
4680 | remote_detach_pid (child_pid); | |
4681 | detach_inferior (child_pid); | |
4682 | } | |
4683 | } | |
4684 | return 0; | |
c906108c SS |
4685 | } |
4686 | ||
6ad8ae5c DJ |
4687 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4688 | ||
43ff13b4 | 4689 | static void |
fee354ee | 4690 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4691 | { |
43ff13b4 | 4692 | if (args) |
2d717e4f | 4693 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4694 | |
2d717e4f | 4695 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4696 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4697 | target_mourn_inferior. */ |
20f796c9 | 4698 | remote_mourn (target); |
2d717e4f | 4699 | |
43ff13b4 JM |
4700 | if (from_tty) |
4701 | puts_filtered ("Ending remote debugging.\n"); | |
4702 | } | |
4703 | ||
2d717e4f DJ |
4704 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4705 | be chatty about it. */ | |
4706 | ||
4707 | static void | |
20f796c9 GB |
4708 | extended_remote_attach (struct target_ops *target, const char *args, |
4709 | int from_tty) | |
2d717e4f DJ |
4710 | { |
4711 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4712 | int pid; |
96ef3384 | 4713 | char *wait_status = NULL; |
2d717e4f | 4714 | |
74164c56 | 4715 | pid = parse_pid_to_attach (args); |
2d717e4f | 4716 | |
74164c56 JK |
4717 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4718 | way as in other targets. */ | |
2d717e4f | 4719 | |
4082afcc | 4720 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4721 | error (_("This target does not support attaching to a process")); |
4722 | ||
7cee1e54 PA |
4723 | if (from_tty) |
4724 | { | |
4725 | char *exec_file = get_exec_file (0); | |
4726 | ||
4727 | if (exec_file) | |
4728 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4729 | target_pid_to_str (pid_to_ptid (pid))); | |
4730 | else | |
4731 | printf_unfiltered (_("Attaching to %s\n"), | |
4732 | target_pid_to_str (pid_to_ptid (pid))); | |
4733 | ||
4734 | gdb_flush (gdb_stdout); | |
4735 | } | |
4736 | ||
bba74b36 | 4737 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4738 | putpkt (rs->buf); |
4739 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4740 | ||
4082afcc PA |
4741 | switch (packet_ok (rs->buf, |
4742 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4743 | { |
4082afcc | 4744 | case PACKET_OK: |
74531fed PA |
4745 | if (!non_stop) |
4746 | { | |
4747 | /* Save the reply for later. */ | |
4748 | wait_status = alloca (strlen (rs->buf) + 1); | |
4749 | strcpy (wait_status, rs->buf); | |
4750 | } | |
4751 | else if (strcmp (rs->buf, "OK") != 0) | |
4752 | error (_("Attaching to %s failed with: %s"), | |
4753 | target_pid_to_str (pid_to_ptid (pid)), | |
4754 | rs->buf); | |
4082afcc PA |
4755 | break; |
4756 | case PACKET_UNKNOWN: | |
4757 | error (_("This target does not support attaching to a process")); | |
4758 | default: | |
4759 | error (_("Attaching to %s failed"), | |
4760 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4761 | } |
2d717e4f | 4762 | |
1b6e6f5c | 4763 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4764 | |
2d717e4f | 4765 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4766 | |
bad34192 PA |
4767 | if (non_stop) |
4768 | { | |
4769 | struct thread_info *thread; | |
79d7f229 | 4770 | |
bad34192 | 4771 | /* Get list of threads. */ |
e8032dde | 4772 | remote_update_thread_list (target); |
82f73884 | 4773 | |
bad34192 PA |
4774 | thread = first_thread_of_process (pid); |
4775 | if (thread) | |
4776 | inferior_ptid = thread->ptid; | |
4777 | else | |
4778 | inferior_ptid = pid_to_ptid (pid); | |
4779 | ||
4780 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4781 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4782 | } |
74531fed | 4783 | else |
bad34192 PA |
4784 | { |
4785 | /* Now, if we have thread information, update inferior_ptid. */ | |
4786 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4787 | ||
4788 | /* Add the main thread to the thread list. */ | |
4789 | add_thread_silent (inferior_ptid); | |
4790 | } | |
c0a2216e | 4791 | |
96ef3384 UW |
4792 | /* Next, if the target can specify a description, read it. We do |
4793 | this before anything involving memory or registers. */ | |
4794 | target_find_description (); | |
4795 | ||
74531fed PA |
4796 | if (!non_stop) |
4797 | { | |
4798 | /* Use the previously fetched status. */ | |
4799 | gdb_assert (wait_status != NULL); | |
4800 | ||
4801 | if (target_can_async_p ()) | |
4802 | { | |
722247f1 YQ |
4803 | struct notif_event *reply |
4804 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4805 | |
722247f1 | 4806 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4807 | |
6a3753b3 | 4808 | target_async (1); |
74531fed PA |
4809 | } |
4810 | else | |
4811 | { | |
4812 | gdb_assert (wait_status != NULL); | |
4813 | strcpy (rs->buf, wait_status); | |
4814 | rs->cached_wait_status = 1; | |
4815 | } | |
4816 | } | |
4817 | else | |
4818 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4819 | } |
4820 | ||
b9c1d481 AS |
4821 | /* Implementation of the to_post_attach method. */ |
4822 | ||
4823 | static void | |
4824 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
4825 | { | |
4826 | /* In certain cases GDB might not have had the chance to start | |
4827 | symbol lookup up until now. This could happen if the debugged | |
4828 | binary is not using shared libraries, the vsyscall page is not | |
4829 | present (on Linux) and the binary itself hadn't changed since the | |
4830 | debugging process was started. */ | |
4831 | if (symfile_objfile != NULL) | |
4832 | remote_check_symbols(); | |
4833 | } | |
4834 | ||
c906108c | 4835 | \f |
506fb367 DJ |
4836 | /* Check for the availability of vCont. This function should also check |
4837 | the response. */ | |
c906108c SS |
4838 | |
4839 | static void | |
6d820c5c | 4840 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4841 | { |
2e9f7625 | 4842 | char *buf; |
6d820c5c | 4843 | |
2e9f7625 DJ |
4844 | strcpy (rs->buf, "vCont?"); |
4845 | putpkt (rs->buf); | |
6d820c5c | 4846 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4847 | buf = rs->buf; |
c906108c | 4848 | |
506fb367 | 4849 | /* Make sure that the features we assume are supported. */ |
61012eef | 4850 | if (startswith (buf, "vCont")) |
506fb367 DJ |
4851 | { |
4852 | char *p = &buf[5]; | |
4853 | int support_s, support_S, support_c, support_C; | |
4854 | ||
4855 | support_s = 0; | |
4856 | support_S = 0; | |
4857 | support_c = 0; | |
4858 | support_C = 0; | |
d458bd84 | 4859 | rs->supports_vCont.t = 0; |
c1e36e3e | 4860 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4861 | while (p && *p == ';') |
4862 | { | |
4863 | p++; | |
4864 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4865 | support_s = 1; | |
4866 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4867 | support_S = 1; | |
4868 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4869 | support_c = 1; | |
4870 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4871 | support_C = 1; | |
74531fed | 4872 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4873 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4874 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4875 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4876 | |
4877 | p = strchr (p, ';'); | |
4878 | } | |
c906108c | 4879 | |
506fb367 DJ |
4880 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4881 | BUF will make packet_ok disable the packet. */ | |
4882 | if (!support_s || !support_S || !support_c || !support_C) | |
4883 | buf[0] = 0; | |
4884 | } | |
c906108c | 4885 | |
444abaca | 4886 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4887 | } |
c906108c | 4888 | |
0d8f58ca PA |
4889 | /* Helper function for building "vCont" resumptions. Write a |
4890 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4891 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4892 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4893 | resumed thread should be single-stepped and/or signalled. If PTID | |
4894 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4895 | represents a process, then all threads of the process are resumed; | |
4896 | the thread to be stepped and/or signalled is given in the global | |
4897 | INFERIOR_PTID. */ | |
4898 | ||
4899 | static char * | |
4900 | append_resumption (char *p, char *endp, | |
2ea28649 | 4901 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4902 | { |
4903 | struct remote_state *rs = get_remote_state (); | |
4904 | ||
a493e3e2 | 4905 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4906 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4907 | else if (step |
4908 | /* GDB is willing to range step. */ | |
4909 | && use_range_stepping | |
4910 | /* Target supports range stepping. */ | |
4911 | && rs->supports_vCont.r | |
4912 | /* We don't currently support range stepping multiple | |
4913 | threads with a wildcard (though the protocol allows it, | |
4914 | so stubs shouldn't make an active effort to forbid | |
4915 | it). */ | |
4916 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4917 | { | |
4918 | struct thread_info *tp; | |
4919 | ||
4920 | if (ptid_equal (ptid, minus_one_ptid)) | |
4921 | { | |
4922 | /* If we don't know about the target thread's tid, then | |
4923 | we're resuming magic_null_ptid (see caller). */ | |
4924 | tp = find_thread_ptid (magic_null_ptid); | |
4925 | } | |
4926 | else | |
4927 | tp = find_thread_ptid (ptid); | |
4928 | gdb_assert (tp != NULL); | |
4929 | ||
4930 | if (tp->control.may_range_step) | |
4931 | { | |
4932 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4933 | ||
4934 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4935 | phex_nz (tp->control.step_range_start, | |
4936 | addr_size), | |
4937 | phex_nz (tp->control.step_range_end, | |
4938 | addr_size)); | |
4939 | } | |
4940 | else | |
4941 | p += xsnprintf (p, endp - p, ";s"); | |
4942 | } | |
0d8f58ca PA |
4943 | else if (step) |
4944 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4945 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4946 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4947 | else | |
4948 | p += xsnprintf (p, endp - p, ";c"); | |
4949 | ||
4950 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4951 | { | |
4952 | ptid_t nptid; | |
4953 | ||
4954 | /* All (-1) threads of process. */ | |
ba348170 | 4955 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
4956 | |
4957 | p += xsnprintf (p, endp - p, ":"); | |
4958 | p = write_ptid (p, endp, nptid); | |
4959 | } | |
4960 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4961 | { | |
4962 | p += xsnprintf (p, endp - p, ":"); | |
4963 | p = write_ptid (p, endp, ptid); | |
4964 | } | |
4965 | ||
4966 | return p; | |
4967 | } | |
4968 | ||
e5ef252a PA |
4969 | /* Append a vCont continue-with-signal action for threads that have a |
4970 | non-zero stop signal. */ | |
4971 | ||
4972 | static char * | |
4973 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4974 | { | |
4975 | struct thread_info *thread; | |
4976 | ||
034f788c | 4977 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
4978 | if (ptid_match (thread->ptid, ptid) |
4979 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 4980 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
4981 | { |
4982 | p = append_resumption (p, endp, thread->ptid, | |
4983 | 0, thread->suspend.stop_signal); | |
4984 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4985 | } | |
4986 | ||
4987 | return p; | |
4988 | } | |
4989 | ||
506fb367 DJ |
4990 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4991 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4992 | resumed thread should be single-stepped and/or signalled. If PTID |
4993 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4994 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4995 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4996 | |
506fb367 DJ |
4997 | This function issues a strict subset of all possible vCont commands at the |
4998 | moment. */ | |
44eaed12 | 4999 | |
506fb367 | 5000 | static int |
2ea28649 | 5001 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5002 | { |
5003 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5004 | char *p; |
5005 | char *endp; | |
44eaed12 | 5006 | |
4082afcc | 5007 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5008 | remote_vcont_probe (rs); |
44eaed12 | 5009 | |
4082afcc | 5010 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5011 | return 0; |
44eaed12 | 5012 | |
82f73884 PA |
5013 | p = rs->buf; |
5014 | endp = rs->buf + get_remote_packet_size (); | |
5015 | ||
506fb367 DJ |
5016 | /* If we could generate a wider range of packets, we'd have to worry |
5017 | about overflowing BUF. Should there be a generic | |
5018 | "multi-part-packet" packet? */ | |
5019 | ||
0d8f58ca PA |
5020 | p += xsnprintf (p, endp - p, "vCont"); |
5021 | ||
79d7f229 | 5022 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5023 | { |
79d7f229 PA |
5024 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5025 | so we don't have any TID numbers the inferior will | |
5026 | understand. Make sure to only send forms that do not specify | |
5027 | a TID. */ | |
a9cbf802 | 5028 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5029 | } |
0d8f58ca | 5030 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5031 | { |
0d8f58ca PA |
5032 | /* Resume all threads (of all processes, or of a single |
5033 | process), with preference for INFERIOR_PTID. This assumes | |
5034 | inferior_ptid belongs to the set of all threads we are about | |
5035 | to resume. */ | |
a493e3e2 | 5036 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5037 | { |
0d8f58ca PA |
5038 | /* Step inferior_ptid, with or without signal. */ |
5039 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5040 | } |
0d8f58ca | 5041 | |
e5ef252a PA |
5042 | /* Also pass down any pending signaled resumption for other |
5043 | threads not the current. */ | |
5044 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5045 | ||
0d8f58ca | 5046 | /* And continue others without a signal. */ |
a493e3e2 | 5047 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5048 | } |
5049 | else | |
506fb367 DJ |
5050 | { |
5051 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5052 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5053 | } |
c906108c | 5054 | |
82f73884 PA |
5055 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5056 | putpkt (rs->buf); | |
506fb367 | 5057 | |
74531fed PA |
5058 | if (non_stop) |
5059 | { | |
5060 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5061 | reply will be reported asynchronously by means of a `%Stop' | |
5062 | notification. */ | |
5063 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5064 | if (strcmp (rs->buf, "OK") != 0) | |
5065 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5066 | } | |
5067 | ||
506fb367 | 5068 | return 1; |
c906108c | 5069 | } |
43ff13b4 | 5070 | |
506fb367 DJ |
5071 | /* Tell the remote machine to resume. */ |
5072 | ||
43ff13b4 | 5073 | static void |
28439f5e | 5074 | remote_resume (struct target_ops *ops, |
2ea28649 | 5075 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5076 | { |
d01949b6 | 5077 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5078 | char *buf; |
43ff13b4 | 5079 | |
722247f1 YQ |
5080 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5081 | (explained in remote-notif.c:handle_notification) so | |
5082 | remote_notif_process is not called. We need find a place where | |
5083 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5084 | before resuming inferior, because inferior was stopped and no RSP | |
5085 | traffic at that moment. */ | |
5086 | if (!non_stop) | |
5965e028 | 5087 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5088 | |
b73be471 | 5089 | rs->last_sent_signal = siggnal; |
280ceea3 | 5090 | rs->last_sent_step = step; |
43ff13b4 | 5091 | |
506fb367 | 5092 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5093 | /* No reverse support (yet) for vCont. */ |
5094 | if (execution_direction != EXEC_REVERSE) | |
5095 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5096 | goto done; | |
506fb367 | 5097 | |
79d7f229 PA |
5098 | /* All other supported resume packets do use Hc, so set the continue |
5099 | thread. */ | |
5100 | if (ptid_equal (ptid, minus_one_ptid)) | |
5101 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5102 | else |
79d7f229 | 5103 | set_continue_thread (ptid); |
506fb367 | 5104 | |
2e9f7625 | 5105 | buf = rs->buf; |
b2175913 MS |
5106 | if (execution_direction == EXEC_REVERSE) |
5107 | { | |
5108 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5109 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5110 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5111 | siggnal); |
40ab02ce | 5112 | |
4082afcc | 5113 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5114 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5115 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5116 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5117 | |
b2175913 MS |
5118 | strcpy (buf, step ? "bs" : "bc"); |
5119 | } | |
a493e3e2 | 5120 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5121 | { |
5122 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5123 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5124 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5125 | buf[3] = '\0'; |
5126 | } | |
5127 | else | |
c5aa993b | 5128 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5129 | |
44eaed12 | 5130 | putpkt (buf); |
43ff13b4 | 5131 | |
75c99385 | 5132 | done: |
2acceee2 | 5133 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5134 | with the event loop. NOTE: this is the one place where all the |
5135 | execution commands end up. We could alternatively do this in each | |
23860348 | 5136 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5137 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5138 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5139 | NOT asynchronously. */ |
362646f5 | 5140 | if (target_can_async_p ()) |
6a3753b3 | 5141 | target_async (1); |
e24a49d8 PA |
5142 | |
5143 | /* We've just told the target to resume. The remote server will | |
5144 | wait for the inferior to stop, and then send a stop reply. In | |
5145 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5146 | because the stub wouldn't be ready to process it. This applies |
5147 | only to the base all-stop protocol, however. In non-stop (which | |
5148 | only supports vCont), the stub replies with an "OK", and is | |
5149 | immediate able to process further serial input. */ | |
5150 | if (!non_stop) | |
5151 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5152 | } |
c906108c | 5153 | \f |
43ff13b4 JM |
5154 | |
5155 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5156 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5157 | static void |
934b9bac | 5158 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5159 | { |
934b9bac | 5160 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5161 | } |
5162 | ||
23860348 | 5163 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5164 | static void |
934b9bac | 5165 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5166 | { |
934b9bac | 5167 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5168 | /* Note we need to go through gdb_call_async_signal_handler in order |
5169 | to wake up the event loop on Windows. */ | |
5170 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5171 | } |
5172 | ||
5173 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5174 | sent once. It will take effect the second time that the user sends | |
23860348 | 5175 | a ^C. */ |
43ff13b4 | 5176 | static void |
934b9bac | 5177 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5178 | { |
934b9bac | 5179 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5180 | /* See note in async_handle_remote_sigint. */ |
5181 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5182 | } |
5183 | ||
6426a772 | 5184 | /* Perform the real interruption of the target execution, in response |
23860348 | 5185 | to a ^C. */ |
c5aa993b | 5186 | static void |
fba45db2 | 5187 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5188 | { |
5189 | if (remote_debug) | |
248fd3bf | 5190 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5191 | |
94cc34af | 5192 | target_stop (inferior_ptid); |
43ff13b4 JM |
5193 | } |
5194 | ||
0df8b418 | 5195 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5196 | up on the target alltogether. */ |
47e1ce27 | 5197 | static void |
fba45db2 | 5198 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5199 | { |
2df3850c | 5200 | if (remote_debug) |
248fd3bf | 5201 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5202 | |
5203 | interrupt_query (); | |
43ff13b4 JM |
5204 | } |
5205 | ||
5206 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5207 | stopped. */ |
6426a772 | 5208 | static void |
934b9bac | 5209 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5210 | { |
5211 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5212 | } |
5213 | ||
c906108c SS |
5214 | /* Send ^C to target to halt it. Target will respond, and send us a |
5215 | packet. */ | |
507f3c78 | 5216 | static void (*ofunc) (int); |
c906108c | 5217 | |
0df8b418 MS |
5218 | /* The command line interface's stop routine. This function is installed |
5219 | as a signal handler for SIGINT. The first time a user requests a | |
5220 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 5221 | response from the target (it didn't stop when the user requested it), |
23860348 | 5222 | we ask the user if he'd like to detach from the target. */ |
c906108c | 5223 | static void |
934b9bac | 5224 | sync_remote_interrupt (int signo) |
c906108c | 5225 | { |
23860348 | 5226 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5227 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5228 | |
934b9bac | 5229 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5230 | } |
5231 | ||
5232 | /* The user typed ^C twice. */ | |
5233 | ||
5234 | static void | |
934b9bac | 5235 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5236 | { |
5237 | signal (signo, ofunc); | |
934b9bac JK |
5238 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5239 | signal (signo, sync_remote_interrupt); | |
c906108c | 5240 | } |
7a292a7a | 5241 | |
74531fed PA |
5242 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5243 | thread, all threads of a remote process, or all threads of all | |
5244 | processes. */ | |
5245 | ||
5246 | static void | |
5247 | remote_stop_ns (ptid_t ptid) | |
5248 | { | |
5249 | struct remote_state *rs = get_remote_state (); | |
5250 | char *p = rs->buf; | |
5251 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5252 | |
4082afcc | 5253 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5254 | remote_vcont_probe (rs); |
5255 | ||
d458bd84 | 5256 | if (!rs->supports_vCont.t) |
74531fed PA |
5257 | error (_("Remote server does not support stopping threads")); |
5258 | ||
f91d3df5 PA |
5259 | if (ptid_equal (ptid, minus_one_ptid) |
5260 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5261 | p += xsnprintf (p, endp - p, "vCont;t"); |
5262 | else | |
5263 | { | |
5264 | ptid_t nptid; | |
5265 | ||
74531fed PA |
5266 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5267 | ||
5268 | if (ptid_is_pid (ptid)) | |
5269 | /* All (-1) threads of process. */ | |
ba348170 | 5270 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5271 | else |
5272 | { | |
5273 | /* Small optimization: if we already have a stop reply for | |
5274 | this thread, no use in telling the stub we want this | |
5275 | stopped. */ | |
5276 | if (peek_stop_reply (ptid)) | |
5277 | return; | |
5278 | ||
5279 | nptid = ptid; | |
5280 | } | |
5281 | ||
a9cbf802 | 5282 | write_ptid (p, endp, nptid); |
74531fed PA |
5283 | } |
5284 | ||
5285 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5286 | come in asynchronously by notification. */ | |
5287 | putpkt (rs->buf); | |
5288 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5289 | if (strcmp (rs->buf, "OK") != 0) | |
5290 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5291 | } | |
5292 | ||
5293 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5294 | remote target. It is undefined which thread of which process | |
5295 | reports the stop. */ | |
5296 | ||
5297 | static void | |
5298 | remote_stop_as (ptid_t ptid) | |
5299 | { | |
5300 | struct remote_state *rs = get_remote_state (); | |
5301 | ||
3a29589a DJ |
5302 | rs->ctrlc_pending_p = 1; |
5303 | ||
74531fed PA |
5304 | /* If the inferior is stopped already, but the core didn't know |
5305 | about it yet, just ignore the request. The cached wait status | |
5306 | will be collected in remote_wait. */ | |
5307 | if (rs->cached_wait_status) | |
5308 | return; | |
5309 | ||
9a7071a8 JB |
5310 | /* Send interrupt_sequence to remote target. */ |
5311 | send_interrupt_sequence (); | |
74531fed PA |
5312 | } |
5313 | ||
0df8b418 | 5314 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5315 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5316 | will eventually end up here. */ |
74531fed | 5317 | |
c906108c | 5318 | static void |
1eab8a48 | 5319 | remote_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 5320 | { |
7a292a7a | 5321 | if (remote_debug) |
0f71a2f6 | 5322 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5323 | |
74531fed PA |
5324 | if (non_stop) |
5325 | remote_stop_ns (ptid); | |
c906108c | 5326 | else |
74531fed | 5327 | remote_stop_as (ptid); |
c906108c SS |
5328 | } |
5329 | ||
5330 | /* Ask the user what to do when an interrupt is received. */ | |
5331 | ||
5332 | static void | |
fba45db2 | 5333 | interrupt_query (void) |
c906108c SS |
5334 | { |
5335 | target_terminal_ours (); | |
5336 | ||
d9d41e78 | 5337 | if (target_is_async_p ()) |
c906108c | 5338 | { |
74531fed | 5339 | signal (SIGINT, handle_sigint); |
039e3c22 | 5340 | quit (); |
c906108c | 5341 | } |
74531fed PA |
5342 | else |
5343 | { | |
9e2f0ad4 HZ |
5344 | if (query (_("Interrupted while waiting for the program.\n\ |
5345 | Give up (and stop debugging it)? "))) | |
74531fed | 5346 | { |
78a095c3 | 5347 | remote_unpush_target (); |
039e3c22 | 5348 | quit (); |
74531fed PA |
5349 | } |
5350 | } | |
c906108c SS |
5351 | |
5352 | target_terminal_inferior (); | |
5353 | } | |
5354 | ||
6426a772 JM |
5355 | /* Enable/disable target terminal ownership. Most targets can use |
5356 | terminal groups to control terminal ownership. Remote targets are | |
5357 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5358 | is required. */ |
6426a772 JM |
5359 | |
5360 | static void | |
d2f640d4 | 5361 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5362 | { |
c6ebd6cf | 5363 | if (!target_async_permitted) |
75c99385 PA |
5364 | /* Nothing to do. */ |
5365 | return; | |
5366 | ||
d9d2d8b6 PA |
5367 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5368 | idempotent. The event-loop GDB talking to an asynchronous target | |
5369 | with a synchronous command calls this function from both | |
5370 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5371 | transfer the terminal to the target when it shouldn't this guard | |
5372 | can go away. */ | |
6426a772 JM |
5373 | if (!remote_async_terminal_ours_p) |
5374 | return; | |
5375 | delete_file_handler (input_fd); | |
5376 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5377 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5378 | /* NOTE: At this point we could also register our selves as the |
5379 | recipient of all input. Any characters typed could then be | |
23860348 | 5380 | passed on down to the target. */ |
6426a772 JM |
5381 | } |
5382 | ||
5383 | static void | |
e3594fd1 | 5384 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5385 | { |
c6ebd6cf | 5386 | if (!target_async_permitted) |
75c99385 PA |
5387 | /* Nothing to do. */ |
5388 | return; | |
5389 | ||
5390 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5391 | if (remote_async_terminal_ours_p) |
5392 | return; | |
934b9bac | 5393 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5394 | add_file_handler (input_fd, stdin_event_handler, 0); |
5395 | remote_async_terminal_ours_p = 1; | |
5396 | } | |
5397 | ||
176a6961 | 5398 | static void |
917317f4 | 5399 | remote_console_output (char *msg) |
c906108c SS |
5400 | { |
5401 | char *p; | |
5402 | ||
c5aa993b | 5403 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5404 | { |
5405 | char tb[2]; | |
5406 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5407 | |
c906108c SS |
5408 | tb[0] = c; |
5409 | tb[1] = 0; | |
43ff13b4 | 5410 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5411 | } |
00db5b94 PA |
5412 | gdb_flush (gdb_stdtarg); |
5413 | } | |
74531fed PA |
5414 | |
5415 | typedef struct cached_reg | |
5416 | { | |
5417 | int num; | |
5418 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5419 | } cached_reg_t; | |
5420 | ||
5421 | DEF_VEC_O(cached_reg_t); | |
5422 | ||
722247f1 | 5423 | typedef struct stop_reply |
74531fed | 5424 | { |
722247f1 | 5425 | struct notif_event base; |
74531fed | 5426 | |
722247f1 | 5427 | /* The identifier of the thread about this event */ |
74531fed PA |
5428 | ptid_t ptid; |
5429 | ||
340e3c99 | 5430 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5431 | connection, represented by a remote_state object, is closed, |
5432 | all the associated stop_reply events should be released. */ | |
5433 | struct remote_state *rs; | |
5434 | ||
74531fed PA |
5435 | struct target_waitstatus ws; |
5436 | ||
15148d6a PA |
5437 | /* Expedited registers. This makes remote debugging a bit more |
5438 | efficient for those targets that provide critical registers as | |
5439 | part of their normal status mechanism (as another roundtrip to | |
5440 | fetch them is avoided). */ | |
74531fed PA |
5441 | VEC(cached_reg_t) *regcache; |
5442 | ||
f7e6eed5 PA |
5443 | enum target_stop_reason stop_reason; |
5444 | ||
74531fed PA |
5445 | CORE_ADDR watch_data_address; |
5446 | ||
dc146f7c | 5447 | int core; |
722247f1 | 5448 | } *stop_reply_p; |
a744cf53 | 5449 | |
722247f1 YQ |
5450 | DECLARE_QUEUE_P (stop_reply_p); |
5451 | DEFINE_QUEUE_P (stop_reply_p); | |
5452 | /* The list of already fetched and acknowledged stop events. This | |
5453 | queue is used for notification Stop, and other notifications | |
5454 | don't need queue for their events, because the notification events | |
5455 | of Stop can't be consumed immediately, so that events should be | |
5456 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5457 | time. Other notifications can consume their events immediately, | |
5458 | so queue is not needed for them. */ | |
5459 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5460 | |
5461 | static void | |
5462 | stop_reply_xfree (struct stop_reply *r) | |
5463 | { | |
f48ff2a7 | 5464 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5465 | } |
5466 | ||
722247f1 YQ |
5467 | static void |
5468 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5469 | struct notif_event *event) | |
5470 | { | |
5471 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5472 | } | |
5473 | ||
5474 | static void | |
5475 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5476 | struct notif_event *event) | |
5477 | { | |
5478 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5479 | ||
5480 | /* acknowledge */ | |
5481 | putpkt ((char *) self->ack_command); | |
5482 | ||
5483 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5484 | /* We got an unknown stop reply. */ | |
5485 | error (_("Unknown stop reply")); | |
5486 | ||
5487 | push_stop_reply (stop_reply); | |
5488 | } | |
5489 | ||
5490 | static int | |
5491 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5492 | { | |
5493 | /* We can't get pending events in remote_notif_process for | |
5494 | notification stop, and we have to do this in remote_wait_ns | |
5495 | instead. If we fetch all queued events from stub, remote stub | |
5496 | may exit and we have no chance to process them back in | |
5497 | remote_wait_ns. */ | |
5498 | mark_async_event_handler (remote_async_inferior_event_token); | |
5499 | return 0; | |
5500 | } | |
5501 | ||
5502 | static void | |
5503 | stop_reply_dtr (struct notif_event *event) | |
5504 | { | |
5505 | struct stop_reply *r = (struct stop_reply *) event; | |
5506 | ||
5507 | VEC_free (cached_reg_t, r->regcache); | |
5508 | } | |
5509 | ||
5510 | static struct notif_event * | |
5511 | remote_notif_stop_alloc_reply (void) | |
5512 | { | |
5513 | struct notif_event *r | |
70ba0933 | 5514 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5515 | |
5516 | r->dtr = stop_reply_dtr; | |
5517 | ||
5518 | return r; | |
5519 | } | |
5520 | ||
5521 | /* A client of notification Stop. */ | |
5522 | ||
5523 | struct notif_client notif_client_stop = | |
5524 | { | |
5525 | "Stop", | |
5526 | "vStopped", | |
5527 | remote_notif_stop_parse, | |
5528 | remote_notif_stop_ack, | |
5529 | remote_notif_stop_can_get_pending_events, | |
5530 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5531 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5532 | }; |
5533 | ||
5534 | /* A parameter to pass data in and out. */ | |
5535 | ||
5536 | struct queue_iter_param | |
5537 | { | |
5538 | void *input; | |
5539 | struct stop_reply *output; | |
5540 | }; | |
5541 | ||
cbb8991c DB |
5542 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5543 | the pid of the process that owns the threads we want to check, or | |
5544 | -1 if we want to check all threads. */ | |
5545 | ||
5546 | static int | |
5547 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5548 | ptid_t thread_ptid) | |
5549 | { | |
5550 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5551 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5552 | { | |
5553 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5554 | return 1; | |
5555 | } | |
5556 | ||
5557 | return 0; | |
5558 | } | |
5559 | ||
5560 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5561 | fork child from the context list passed in DATA. */ | |
5562 | ||
5563 | static int | |
5564 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5565 | QUEUE_ITER (stop_reply_p) *iter, | |
5566 | stop_reply_p event, | |
5567 | void *data) | |
5568 | { | |
5569 | struct queue_iter_param *param = data; | |
5570 | struct threads_listing_context *context = param->input; | |
5571 | ||
5572 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5573 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5574 | { | |
5575 | threads_listing_context_remove (&event->ws, context); | |
5576 | } | |
5577 | ||
5578 | return 1; | |
5579 | } | |
5580 | ||
5581 | /* If CONTEXT contains any fork child threads that have not been | |
5582 | reported yet, remove them from the CONTEXT list. If such a | |
5583 | thread exists it is because we are stopped at a fork catchpoint | |
5584 | and have not yet called follow_fork, which will set up the | |
5585 | host-side data structures for the new process. */ | |
5586 | ||
5587 | static void | |
5588 | remove_new_fork_children (struct threads_listing_context *context) | |
5589 | { | |
5590 | struct thread_info * thread; | |
5591 | int pid = -1; | |
5592 | struct notif_client *notif = ¬if_client_stop; | |
5593 | struct queue_iter_param param; | |
5594 | ||
5595 | /* For any threads stopped at a fork event, remove the corresponding | |
5596 | fork child threads from the CONTEXT list. */ | |
5597 | ALL_NON_EXITED_THREADS (thread) | |
5598 | { | |
5599 | struct target_waitstatus *ws = &thread->pending_follow; | |
5600 | ||
5601 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5602 | { | |
5603 | threads_listing_context_remove (ws, context); | |
5604 | } | |
5605 | } | |
5606 | ||
5607 | /* Check for any pending fork events (not reported or processed yet) | |
5608 | in process PID and remove those fork child threads from the | |
5609 | CONTEXT list as well. */ | |
5610 | remote_notif_get_pending_events (notif); | |
5611 | param.input = context; | |
5612 | param.output = NULL; | |
5613 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5614 | remove_child_of_pending_fork, ¶m); | |
5615 | } | |
5616 | ||
f48ff2a7 YQ |
5617 | /* Remove stop replies in the queue if its pid is equal to the given |
5618 | inferior's pid. */ | |
722247f1 YQ |
5619 | |
5620 | static int | |
f48ff2a7 YQ |
5621 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5622 | QUEUE_ITER (stop_reply_p) *iter, | |
5623 | stop_reply_p event, | |
5624 | void *data) | |
722247f1 YQ |
5625 | { |
5626 | struct queue_iter_param *param = data; | |
5627 | struct inferior *inf = param->input; | |
5628 | ||
f48ff2a7 | 5629 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5630 | { |
5631 | stop_reply_xfree (event); | |
5632 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5633 | } | |
5634 | ||
5635 | return 1; | |
5636 | } | |
5637 | ||
f48ff2a7 | 5638 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5639 | |
74531fed | 5640 | static void |
5f4cf0bb | 5641 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5642 | { |
722247f1 YQ |
5643 | int i; |
5644 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5645 | struct stop_reply *reply; |
5646 | struct remote_state *rs = get_remote_state (); | |
5647 | struct remote_notif_state *rns = rs->notif_state; | |
5648 | ||
5649 | /* This function can be notified when an inferior exists. When the | |
5650 | target is not remote, the notification state is NULL. */ | |
5651 | if (rs->remote_desc == NULL) | |
5652 | return; | |
5653 | ||
5654 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5655 | |
74531fed | 5656 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5657 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5658 | { |
722247f1 | 5659 | stop_reply_xfree (reply); |
f48ff2a7 | 5660 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5661 | } |
c906108c | 5662 | |
722247f1 YQ |
5663 | param.input = inf; |
5664 | param.output = NULL; | |
74531fed PA |
5665 | /* Discard the stop replies we have already pulled with |
5666 | vStopped. */ | |
722247f1 | 5667 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5668 | remove_stop_reply_for_inferior, ¶m); |
5669 | } | |
5670 | ||
bcc75809 YQ |
5671 | /* If its remote state is equal to the given remote state, |
5672 | remove EVENT from the stop reply queue. */ | |
5673 | ||
5674 | static int | |
5675 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5676 | QUEUE_ITER (stop_reply_p) *iter, | |
5677 | stop_reply_p event, | |
5678 | void *data) | |
5679 | { | |
5680 | struct queue_iter_param *param = data; | |
5681 | struct remote_state *rs = param->input; | |
5682 | ||
5683 | if (event->rs == rs) | |
5684 | { | |
5685 | stop_reply_xfree (event); | |
5686 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5687 | } | |
5688 | ||
5689 | return 1; | |
5690 | } | |
5691 | ||
5692 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5693 | |
5694 | static void | |
bcc75809 | 5695 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5696 | { |
5697 | struct queue_iter_param param; | |
5698 | ||
bcc75809 | 5699 | param.input = rs; |
f48ff2a7 YQ |
5700 | param.output = NULL; |
5701 | /* Discard the stop replies we have already pulled with | |
5702 | vStopped. */ | |
5703 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5704 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5705 | } |
74531fed | 5706 | |
722247f1 YQ |
5707 | /* A parameter to pass data in and out. */ |
5708 | ||
5709 | static int | |
5710 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5711 | QUEUE_ITER (stop_reply_p) *iter, | |
5712 | stop_reply_p event, | |
5713 | void *data) | |
5714 | { | |
5715 | struct queue_iter_param *param = data; | |
5716 | ptid_t *ptid = param->input; | |
5717 | ||
5718 | if (ptid_match (event->ptid, *ptid)) | |
5719 | { | |
5720 | param->output = event; | |
5721 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5722 | return 0; | |
c8e38a49 | 5723 | } |
722247f1 YQ |
5724 | |
5725 | return 1; | |
74531fed | 5726 | } |
43ff13b4 | 5727 | |
722247f1 YQ |
5728 | /* Remove the first reply in 'stop_reply_queue' which matches |
5729 | PTID. */ | |
2e9f7625 | 5730 | |
722247f1 YQ |
5731 | static struct stop_reply * |
5732 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5733 | { |
722247f1 YQ |
5734 | struct queue_iter_param param; |
5735 | ||
5736 | param.input = &ptid; | |
5737 | param.output = NULL; | |
5738 | ||
5739 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5740 | remote_notif_remove_once_on_match, ¶m); | |
5741 | if (notif_debug) | |
5742 | fprintf_unfiltered (gdb_stdlog, | |
5743 | "notif: discard queued event: 'Stop' in %s\n", | |
5744 | target_pid_to_str (ptid)); | |
a744cf53 | 5745 | |
722247f1 | 5746 | return param.output; |
74531fed | 5747 | } |
75c99385 | 5748 | |
74531fed PA |
5749 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5750 | remove it from the queue, and return it. Returns NULL if none is | |
5751 | found. If there are still queued events left to process, tell the | |
5752 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5753 | |
74531fed PA |
5754 | static struct stop_reply * |
5755 | queued_stop_reply (ptid_t ptid) | |
5756 | { | |
722247f1 | 5757 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5758 | |
722247f1 | 5759 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5760 | /* There's still at least an event left. */ |
5761 | mark_async_event_handler (remote_async_inferior_event_token); | |
5762 | ||
722247f1 | 5763 | return r; |
74531fed PA |
5764 | } |
5765 | ||
5766 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5767 | know that we now have at least one queued event left to pass to the | |
5768 | core side, tell the event loop to get back to target_wait soon. */ | |
5769 | ||
5770 | static void | |
5771 | push_stop_reply (struct stop_reply *new_event) | |
5772 | { | |
722247f1 | 5773 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5774 | |
722247f1 YQ |
5775 | if (notif_debug) |
5776 | fprintf_unfiltered (gdb_stdlog, | |
5777 | "notif: push 'Stop' %s to queue %d\n", | |
5778 | target_pid_to_str (new_event->ptid), | |
5779 | QUEUE_length (stop_reply_p, | |
5780 | stop_reply_queue)); | |
74531fed PA |
5781 | |
5782 | mark_async_event_handler (remote_async_inferior_event_token); | |
5783 | } | |
5784 | ||
722247f1 YQ |
5785 | static int |
5786 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5787 | QUEUE_ITER (stop_reply_p) *iter, | |
5788 | struct stop_reply *event, | |
5789 | void *data) | |
5790 | { | |
5791 | ptid_t *ptid = data; | |
5792 | ||
5793 | return !(ptid_equal (*ptid, event->ptid) | |
5794 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5795 | } | |
5796 | ||
74531fed PA |
5797 | /* Returns true if we have a stop reply for PTID. */ |
5798 | ||
5799 | static int | |
5800 | peek_stop_reply (ptid_t ptid) | |
5801 | { | |
722247f1 YQ |
5802 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5803 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5804 | } |
5805 | ||
1f10ba14 PA |
5806 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5807 | ||
5808 | static char * | |
5809 | skip_to_semicolon (char *p) | |
5810 | { | |
5811 | while (*p != '\0' && *p != ';') | |
5812 | p++; | |
5813 | return p; | |
5814 | } | |
5815 | ||
74531fed PA |
5816 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5817 | result is stored in EVENT, or throws an error. */ | |
5818 | ||
5819 | static void | |
5820 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5821 | { | |
5822 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5823 | ULONGEST addr; | |
5824 | char *p; | |
5825 | ||
5826 | event->ptid = null_ptid; | |
bcc75809 | 5827 | event->rs = get_remote_state (); |
74531fed PA |
5828 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5829 | event->ws.value.integer = 0; | |
f7e6eed5 | 5830 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 5831 | event->regcache = NULL; |
dc146f7c | 5832 | event->core = -1; |
74531fed PA |
5833 | |
5834 | switch (buf[0]) | |
5835 | { | |
5836 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5837 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5838 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5839 | ss = signal number | |
5840 | n... = register number | |
5841 | r... = register contents | |
5842 | */ | |
5843 | ||
5844 | p = &buf[3]; /* after Txx */ | |
5845 | while (*p) | |
5846 | { | |
5847 | char *p1; | |
cea39f65 | 5848 | int fieldsize; |
43ff13b4 | 5849 | |
1f10ba14 PA |
5850 | p1 = strchr (p, ':'); |
5851 | if (p1 == NULL) | |
5852 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
5853 | Packet: '%s'\n"), | |
5854 | p, buf); | |
5855 | if (p == p1) | |
5856 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
5857 | Packet: '%s'\n"), | |
5858 | p, buf); | |
3c3bea1c | 5859 | |
1f10ba14 PA |
5860 | /* Some "registers" are actually extended stop information. |
5861 | Note if you're adding a new entry here: GDB 7.9 and | |
5862 | earlier assume that all register "numbers" that start | |
5863 | with an hex digit are real register numbers. Make sure | |
5864 | the server only sends such a packet if it knows the | |
5865 | client understands it. */ | |
c8e38a49 | 5866 | |
1f10ba14 PA |
5867 | if (strncmp (p, "thread", p1 - p) == 0) |
5868 | event->ptid = read_ptid (++p1, &p); | |
5869 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5870 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5871 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
cea39f65 | 5872 | { |
f7e6eed5 | 5873 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
5874 | p = unpack_varlen_hex (++p1, &addr); |
5875 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 5876 | } |
f7e6eed5 PA |
5877 | else if (strncmp (p, "swbreak", p1 - p) == 0) |
5878 | { | |
5879 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
5880 | ||
5881 | /* Make sure the stub doesn't forget to indicate support | |
5882 | with qSupported. */ | |
5883 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
5884 | error (_("Unexpected swbreak stop reason")); | |
5885 | ||
5886 | /* The value part is documented as "must be empty", | |
5887 | though we ignore it, in case we ever decide to make | |
5888 | use of it in a backward compatible way. */ | |
5889 | p = skip_to_semicolon (p1 + 1); | |
5890 | } | |
5891 | else if (strncmp (p, "hwbreak", p1 - p) == 0) | |
5892 | { | |
5893 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
5894 | ||
5895 | /* Make sure the stub doesn't forget to indicate support | |
5896 | with qSupported. */ | |
5897 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
5898 | error (_("Unexpected hwbreak stop reason")); | |
5899 | ||
5900 | /* See above. */ | |
5901 | p = skip_to_semicolon (p1 + 1); | |
5902 | } | |
1f10ba14 | 5903 | else if (strncmp (p, "library", p1 - p) == 0) |
cea39f65 | 5904 | { |
1f10ba14 PA |
5905 | event->ws.kind = TARGET_WAITKIND_LOADED; |
5906 | p = skip_to_semicolon (p1 + 1); | |
5907 | } | |
5908 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5909 | { | |
5910 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
5911 | /* p1 will indicate "begin" or "end", but it makes | |
5912 | no difference for now, so ignore it. */ | |
5913 | p = skip_to_semicolon (p1 + 1); | |
5914 | } | |
5915 | else if (strncmp (p, "core", p1 - p) == 0) | |
5916 | { | |
5917 | ULONGEST c; | |
a744cf53 | 5918 | |
1f10ba14 PA |
5919 | p = unpack_varlen_hex (++p1, &c); |
5920 | event->core = c; | |
cea39f65 | 5921 | } |
de0d863e DB |
5922 | else if (strncmp (p, "fork", p1 - p) == 0) |
5923 | { | |
5924 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5925 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
5926 | } | |
c269dbdb DB |
5927 | else if (strncmp (p, "vfork", p1 - p) == 0) |
5928 | { | |
5929 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5930 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
5931 | } | |
5932 | else if (strncmp (p, "vforkdone", p1 - p) == 0) | |
5933 | { | |
5934 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
5935 | p = skip_to_semicolon (p1 + 1); | |
5936 | } | |
cea39f65 MS |
5937 | else |
5938 | { | |
1f10ba14 PA |
5939 | ULONGEST pnum; |
5940 | char *p_temp; | |
5941 | ||
5942 | /* Maybe a real ``P'' register number. */ | |
5943 | p_temp = unpack_varlen_hex (p, &pnum); | |
5944 | /* If the first invalid character is the colon, we got a | |
5945 | register number. Otherwise, it's an unknown stop | |
5946 | reason. */ | |
5947 | if (p_temp == p1) | |
5948 | { | |
5949 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5950 | cached_reg_t cached_reg; | |
43ff13b4 | 5951 | |
1f10ba14 PA |
5952 | if (reg == NULL) |
5953 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5954 | Packet: '%s'\n"), |
1f10ba14 | 5955 | hex_string (pnum), p, buf); |
c8e38a49 | 5956 | |
1f10ba14 | 5957 | cached_reg.num = reg->regnum; |
4100683b | 5958 | |
1f10ba14 PA |
5959 | p = p1 + 1; |
5960 | fieldsize = hex2bin (p, cached_reg.data, | |
5961 | register_size (target_gdbarch (), | |
5962 | reg->regnum)); | |
5963 | p += 2 * fieldsize; | |
5964 | if (fieldsize < register_size (target_gdbarch (), | |
5965 | reg->regnum)) | |
5966 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5967 | |
1f10ba14 PA |
5968 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5969 | } | |
5970 | else | |
5971 | { | |
5972 | /* Not a number. Silently skip unknown optional | |
5973 | info. */ | |
5974 | p = skip_to_semicolon (p1 + 1); | |
5975 | } | |
cea39f65 | 5976 | } |
c8e38a49 | 5977 | |
cea39f65 MS |
5978 | if (*p != ';') |
5979 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5980 | buf, p); | |
5981 | ++p; | |
5982 | } | |
5b5596ff PA |
5983 | |
5984 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
5985 | break; | |
5986 | ||
c8e38a49 PA |
5987 | /* fall through */ |
5988 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
5989 | { |
5990 | int sig; | |
5991 | ||
5992 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
5993 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
5994 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
5995 | event->ws.value.sig = (enum gdb_signal) sig; | |
5996 | else | |
5997 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5998 | } | |
c8e38a49 PA |
5999 | break; |
6000 | case 'W': /* Target exited. */ | |
6001 | case 'X': | |
6002 | { | |
6003 | char *p; | |
6004 | int pid; | |
6005 | ULONGEST value; | |
82f73884 | 6006 | |
c8e38a49 PA |
6007 | /* GDB used to accept only 2 hex chars here. Stubs should |
6008 | only send more if they detect GDB supports multi-process | |
6009 | support. */ | |
6010 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6011 | |
c8e38a49 PA |
6012 | if (buf[0] == 'W') |
6013 | { | |
6014 | /* The remote process exited. */ | |
74531fed PA |
6015 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6016 | event->ws.value.integer = value; | |
c8e38a49 PA |
6017 | } |
6018 | else | |
6019 | { | |
6020 | /* The remote process exited with a signal. */ | |
74531fed | 6021 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6022 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6023 | event->ws.value.sig = (enum gdb_signal) value; | |
6024 | else | |
6025 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6026 | } |
82f73884 | 6027 | |
c8e38a49 PA |
6028 | /* If no process is specified, assume inferior_ptid. */ |
6029 | pid = ptid_get_pid (inferior_ptid); | |
6030 | if (*p == '\0') | |
6031 | ; | |
6032 | else if (*p == ';') | |
6033 | { | |
6034 | p++; | |
6035 | ||
0b24eb2d | 6036 | if (*p == '\0') |
82f73884 | 6037 | ; |
61012eef | 6038 | else if (startswith (p, "process:")) |
82f73884 | 6039 | { |
c8e38a49 | 6040 | ULONGEST upid; |
a744cf53 | 6041 | |
c8e38a49 PA |
6042 | p += sizeof ("process:") - 1; |
6043 | unpack_varlen_hex (p, &upid); | |
6044 | pid = upid; | |
82f73884 PA |
6045 | } |
6046 | else | |
6047 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6048 | } |
c8e38a49 PA |
6049 | else |
6050 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6051 | event->ptid = pid_to_ptid (pid); |
6052 | } | |
6053 | break; | |
6054 | } | |
6055 | ||
6056 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6057 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6058 | } | |
6059 | ||
722247f1 YQ |
6060 | /* When the stub wants to tell GDB about a new notification reply, it |
6061 | sends a notification (%Stop, for example). Those can come it at | |
6062 | any time, hence, we have to make sure that any pending | |
6063 | putpkt/getpkt sequence we're making is finished, before querying | |
6064 | the stub for more events with the corresponding ack command | |
6065 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6066 | immediately upon receiving the notification, something like this | |
6067 | could happen: | |
74531fed PA |
6068 | |
6069 | 1.1) --> Hg 1 | |
6070 | 1.2) <-- OK | |
6071 | 1.3) --> g | |
6072 | 1.4) <-- %Stop | |
6073 | 1.5) --> vStopped | |
6074 | 1.6) <-- (registers reply to step #1.3) | |
6075 | ||
6076 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6077 | query. | |
6078 | ||
796cb314 | 6079 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6080 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6081 | doing whatever we were doing: | |
6082 | ||
6083 | 2.1) --> Hg 1 | |
6084 | 2.2) <-- OK | |
6085 | 2.3) --> g | |
6086 | 2.4) <-- %Stop | |
6087 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6088 | 2.5) <-- (registers reply to step #2.3) | |
6089 | ||
6090 | Eventualy after step #2.5, we return to the event loop, which | |
6091 | notices there's an event on the | |
6092 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6093 | associated callback --- the function below. At this point, we're | |
6094 | always safe to start a vStopped sequence. : | |
6095 | ||
6096 | 2.6) --> vStopped | |
6097 | 2.7) <-- T05 thread:2 | |
6098 | 2.8) --> vStopped | |
6099 | 2.9) --> OK | |
6100 | */ | |
6101 | ||
722247f1 YQ |
6102 | void |
6103 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6104 | { |
6105 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6106 | |
f48ff2a7 | 6107 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6108 | { |
722247f1 YQ |
6109 | if (notif_debug) |
6110 | fprintf_unfiltered (gdb_stdlog, | |
6111 | "notif: process: '%s' ack pending event\n", | |
6112 | nc->name); | |
74531fed | 6113 | |
722247f1 | 6114 | /* acknowledge */ |
f48ff2a7 YQ |
6115 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6116 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6117 | |
6118 | while (1) | |
6119 | { | |
6120 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6121 | if (strcmp (rs->buf, "OK") == 0) | |
6122 | break; | |
6123 | else | |
722247f1 | 6124 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6125 | } |
6126 | } | |
722247f1 YQ |
6127 | else |
6128 | { | |
6129 | if (notif_debug) | |
6130 | fprintf_unfiltered (gdb_stdlog, | |
6131 | "notif: process: '%s' no pending reply\n", | |
6132 | nc->name); | |
6133 | } | |
74531fed PA |
6134 | } |
6135 | ||
74531fed PA |
6136 | /* Called when it is decided that STOP_REPLY holds the info of the |
6137 | event that is to be returned to the core. This function always | |
6138 | destroys STOP_REPLY. */ | |
6139 | ||
6140 | static ptid_t | |
6141 | process_stop_reply (struct stop_reply *stop_reply, | |
6142 | struct target_waitstatus *status) | |
6143 | { | |
6144 | ptid_t ptid; | |
6145 | ||
6146 | *status = stop_reply->ws; | |
6147 | ptid = stop_reply->ptid; | |
6148 | ||
6149 | /* If no thread/process was reported by the stub, assume the current | |
6150 | inferior. */ | |
6151 | if (ptid_equal (ptid, null_ptid)) | |
6152 | ptid = inferior_ptid; | |
6153 | ||
5f3563ea PA |
6154 | if (status->kind != TARGET_WAITKIND_EXITED |
6155 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6156 | { |
ee154bee TT |
6157 | struct remote_state *rs = get_remote_state (); |
6158 | ||
5f3563ea PA |
6159 | /* Expedited registers. */ |
6160 | if (stop_reply->regcache) | |
6161 | { | |
217f1f79 | 6162 | struct regcache *regcache |
f5656ead | 6163 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6164 | cached_reg_t *reg; |
6165 | int ix; | |
6166 | ||
6167 | for (ix = 0; | |
6168 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6169 | ix++) | |
217f1f79 | 6170 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6171 | VEC_free (cached_reg_t, stop_reply->regcache); |
6172 | } | |
74531fed | 6173 | |
f7e6eed5 | 6174 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 6175 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
6176 | |
6177 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 6178 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
6179 | } |
6180 | ||
74531fed PA |
6181 | stop_reply_xfree (stop_reply); |
6182 | return ptid; | |
6183 | } | |
6184 | ||
6185 | /* The non-stop mode version of target_wait. */ | |
6186 | ||
6187 | static ptid_t | |
47608cb1 | 6188 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6189 | { |
6190 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6191 | struct stop_reply *stop_reply; |
6192 | int ret; | |
fee9eda9 | 6193 | int is_notif = 0; |
74531fed PA |
6194 | |
6195 | /* If in non-stop mode, get out of getpkt even if a | |
6196 | notification is received. */ | |
6197 | ||
6198 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6199 | 0 /* forever */, &is_notif); |
74531fed PA |
6200 | while (1) |
6201 | { | |
fee9eda9 | 6202 | if (ret != -1 && !is_notif) |
74531fed PA |
6203 | switch (rs->buf[0]) |
6204 | { | |
6205 | case 'E': /* Error of some sort. */ | |
6206 | /* We're out of sync with the target now. Did it continue | |
6207 | or not? We can't tell which thread it was in non-stop, | |
6208 | so just ignore this. */ | |
6209 | warning (_("Remote failure reply: %s"), rs->buf); | |
6210 | break; | |
6211 | case 'O': /* Console output. */ | |
6212 | remote_console_output (rs->buf + 1); | |
6213 | break; | |
6214 | default: | |
6215 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6216 | break; | |
6217 | } | |
6218 | ||
6219 | /* Acknowledge a pending stop reply that may have arrived in the | |
6220 | mean time. */ | |
f48ff2a7 | 6221 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6222 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6223 | |
6224 | /* If indeed we noticed a stop reply, we're done. */ | |
6225 | stop_reply = queued_stop_reply (ptid); | |
6226 | if (stop_reply != NULL) | |
6227 | return process_stop_reply (stop_reply, status); | |
6228 | ||
47608cb1 | 6229 | /* Still no event. If we're just polling for an event, then |
74531fed | 6230 | return to the event loop. */ |
47608cb1 | 6231 | if (options & TARGET_WNOHANG) |
74531fed PA |
6232 | { |
6233 | status->kind = TARGET_WAITKIND_IGNORE; | |
6234 | return minus_one_ptid; | |
6235 | } | |
6236 | ||
47608cb1 | 6237 | /* Otherwise do a blocking wait. */ |
74531fed | 6238 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6239 | 1 /* forever */, &is_notif); |
74531fed PA |
6240 | } |
6241 | } | |
6242 | ||
6243 | /* Wait until the remote machine stops, then return, storing status in | |
6244 | STATUS just as `wait' would. */ | |
6245 | ||
6246 | static ptid_t | |
47608cb1 | 6247 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6248 | { |
6249 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6250 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6251 | char *buf; |
74531fed PA |
6252 | struct stop_reply *stop_reply; |
6253 | ||
47608cb1 PA |
6254 | again: |
6255 | ||
74531fed PA |
6256 | status->kind = TARGET_WAITKIND_IGNORE; |
6257 | status->value.integer = 0; | |
6258 | ||
6259 | stop_reply = queued_stop_reply (ptid); | |
6260 | if (stop_reply != NULL) | |
6261 | return process_stop_reply (stop_reply, status); | |
6262 | ||
6263 | if (rs->cached_wait_status) | |
6264 | /* Use the cached wait status, but only once. */ | |
6265 | rs->cached_wait_status = 0; | |
6266 | else | |
6267 | { | |
6268 | int ret; | |
722247f1 | 6269 | int is_notif; |
567420d1 PA |
6270 | int forever = ((options & TARGET_WNOHANG) == 0 |
6271 | && wait_forever_enabled_p); | |
6272 | ||
6273 | if (!rs->waiting_for_stop_reply) | |
6274 | { | |
6275 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6276 | return minus_one_ptid; | |
6277 | } | |
74531fed PA |
6278 | |
6279 | if (!target_is_async_p ()) | |
6280 | { | |
934b9bac | 6281 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6282 | /* If the user hit C-c before this packet, or between packets, |
6283 | pretend that it was hit right here. */ | |
522002f9 | 6284 | if (check_quit_flag ()) |
74531fed | 6285 | { |
522002f9 | 6286 | clear_quit_flag (); |
934b9bac | 6287 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6288 | } |
6289 | } | |
6290 | ||
6291 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6292 | _never_ wait for ever -> test on target_is_async_p(). | |
6293 | However, before we do that we need to ensure that the caller | |
6294 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6295 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6296 | forever, &is_notif); |
722247f1 | 6297 | |
5e1b953b SDJ |
6298 | if (!target_is_async_p ()) |
6299 | signal (SIGINT, ofunc); | |
6300 | ||
722247f1 YQ |
6301 | /* GDB gets a notification. Return to core as this event is |
6302 | not interesting. */ | |
6303 | if (ret != -1 && is_notif) | |
6304 | return minus_one_ptid; | |
567420d1 PA |
6305 | |
6306 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6307 | return minus_one_ptid; | |
74531fed PA |
6308 | } |
6309 | ||
6310 | buf = rs->buf; | |
6311 | ||
f7e6eed5 | 6312 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6313 | |
6314 | /* We got something. */ | |
6315 | rs->waiting_for_stop_reply = 0; | |
6316 | ||
3a29589a DJ |
6317 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6318 | an 'F' or 'O' packet. */ | |
6319 | if (buf[0] != 'F' && buf[0] != 'O') | |
6320 | rs->ctrlc_pending_p = 0; | |
6321 | ||
74531fed PA |
6322 | switch (buf[0]) |
6323 | { | |
6324 | case 'E': /* Error of some sort. */ | |
6325 | /* We're out of sync with the target now. Did it continue or | |
6326 | not? Not is more likely, so report a stop. */ | |
6327 | warning (_("Remote failure reply: %s"), buf); | |
6328 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6329 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6330 | break; |
6331 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6332 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6333 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6334 | break; |
6335 | case 'T': case 'S': case 'X': case 'W': | |
6336 | { | |
722247f1 YQ |
6337 | struct stop_reply *stop_reply |
6338 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6339 | rs->buf); | |
74531fed | 6340 | |
74531fed | 6341 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6342 | break; |
6343 | } | |
6344 | case 'O': /* Console output. */ | |
6345 | remote_console_output (buf + 1); | |
e24a49d8 | 6346 | |
c8e38a49 PA |
6347 | /* The target didn't really stop; keep waiting. */ |
6348 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6349 | |
c8e38a49 PA |
6350 | break; |
6351 | case '\0': | |
b73be471 | 6352 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6353 | { |
6354 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6355 | remote system doesn't support it. */ | |
6356 | target_terminal_ours_for_output (); | |
6357 | printf_filtered | |
6358 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6359 | gdb_signal_to_name (rs->last_sent_signal)); |
6360 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6361 | target_terminal_inferior (); |
6362 | ||
280ceea3 | 6363 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6364 | putpkt ((char *) buf); |
6365 | ||
6366 | /* We just told the target to resume, so a stop reply is in | |
6367 | order. */ | |
e24a49d8 | 6368 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6369 | break; |
43ff13b4 | 6370 | } |
c8e38a49 PA |
6371 | /* else fallthrough */ |
6372 | default: | |
6373 | warning (_("Invalid remote reply: %s"), buf); | |
6374 | /* Keep waiting. */ | |
6375 | rs->waiting_for_stop_reply = 1; | |
6376 | break; | |
43ff13b4 | 6377 | } |
c8e38a49 | 6378 | |
c8e38a49 | 6379 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6380 | { |
6381 | /* Nothing interesting happened. If we're doing a non-blocking | |
6382 | poll, we're done. Otherwise, go back to waiting. */ | |
6383 | if (options & TARGET_WNOHANG) | |
6384 | return minus_one_ptid; | |
6385 | else | |
6386 | goto again; | |
6387 | } | |
74531fed PA |
6388 | else if (status->kind != TARGET_WAITKIND_EXITED |
6389 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6390 | { |
6391 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6392 | record_currthread (rs, event_ptid); |
82f73884 PA |
6393 | else |
6394 | event_ptid = inferior_ptid; | |
43ff13b4 | 6395 | } |
74531fed PA |
6396 | else |
6397 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6398 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6399 | |
82f73884 | 6400 | return event_ptid; |
43ff13b4 JM |
6401 | } |
6402 | ||
74531fed PA |
6403 | /* Wait until the remote machine stops, then return, storing status in |
6404 | STATUS just as `wait' would. */ | |
6405 | ||
c8e38a49 | 6406 | static ptid_t |
117de6a9 | 6407 | remote_wait (struct target_ops *ops, |
47608cb1 | 6408 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6409 | { |
6410 | ptid_t event_ptid; | |
6411 | ||
74531fed | 6412 | if (non_stop) |
47608cb1 | 6413 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6414 | else |
47608cb1 | 6415 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6416 | |
d9d41e78 | 6417 | if (target_is_async_p ()) |
c8e38a49 | 6418 | { |
74531fed PA |
6419 | /* If there are are events left in the queue tell the event loop |
6420 | to return here. */ | |
722247f1 | 6421 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6422 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6423 | } |
c8e38a49 PA |
6424 | |
6425 | return event_ptid; | |
6426 | } | |
6427 | ||
74ca34ce | 6428 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6429 | |
b96ec7ac | 6430 | static int |
56be3814 | 6431 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6432 | { |
6433 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6434 | char *buf, *p; |
b96ec7ac AC |
6435 | char regp[MAX_REGISTER_SIZE]; |
6436 | int i; | |
6437 | ||
4082afcc | 6438 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6439 | return 0; |
6440 | ||
6441 | if (reg->pnum == -1) | |
6442 | return 0; | |
6443 | ||
2e9f7625 | 6444 | p = rs->buf; |
fcad0fa4 | 6445 | *p++ = 'p'; |
74ca34ce | 6446 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6447 | *p++ = '\0'; |
1f4437a4 MS |
6448 | putpkt (rs->buf); |
6449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6450 | |
2e9f7625 DJ |
6451 | buf = rs->buf; |
6452 | ||
74ca34ce DJ |
6453 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6454 | { | |
6455 | case PACKET_OK: | |
6456 | break; | |
6457 | case PACKET_UNKNOWN: | |
6458 | return 0; | |
6459 | case PACKET_ERROR: | |
27a9c0bf MS |
6460 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6461 | gdbarch_register_name (get_regcache_arch (regcache), | |
6462 | reg->regnum), | |
6463 | buf); | |
74ca34ce | 6464 | } |
3f9a994c JB |
6465 | |
6466 | /* If this register is unfetchable, tell the regcache. */ | |
6467 | if (buf[0] == 'x') | |
8480adf2 | 6468 | { |
56be3814 | 6469 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6470 | return 1; |
b96ec7ac | 6471 | } |
b96ec7ac | 6472 | |
3f9a994c JB |
6473 | /* Otherwise, parse and supply the value. */ |
6474 | p = buf; | |
6475 | i = 0; | |
6476 | while (p[0] != 0) | |
6477 | { | |
6478 | if (p[1] == 0) | |
74ca34ce | 6479 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6480 | |
6481 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6482 | p += 2; | |
6483 | } | |
56be3814 | 6484 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6485 | return 1; |
b96ec7ac AC |
6486 | } |
6487 | ||
74ca34ce DJ |
6488 | /* Fetch the registers included in the target's 'g' packet. */ |
6489 | ||
29709017 DJ |
6490 | static int |
6491 | send_g_packet (void) | |
c906108c | 6492 | { |
d01949b6 | 6493 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6494 | int buf_len; |
c906108c | 6495 | |
bba74b36 | 6496 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6497 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6498 | |
29709017 DJ |
6499 | /* We can get out of synch in various cases. If the first character |
6500 | in the buffer is not a hex character, assume that has happened | |
6501 | and try to fetch another packet to read. */ | |
6502 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6503 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6504 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6505 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6506 | { | |
6507 | if (remote_debug) | |
6508 | fprintf_unfiltered (gdb_stdlog, | |
6509 | "Bad register packet; fetching a new packet\n"); | |
6510 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6511 | } | |
6512 | ||
74ca34ce DJ |
6513 | buf_len = strlen (rs->buf); |
6514 | ||
6515 | /* Sanity check the received packet. */ | |
6516 | if (buf_len % 2 != 0) | |
6517 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6518 | |
6519 | return buf_len / 2; | |
6520 | } | |
6521 | ||
6522 | static void | |
56be3814 | 6523 | process_g_packet (struct regcache *regcache) |
29709017 | 6524 | { |
4a22f64d | 6525 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6526 | struct remote_state *rs = get_remote_state (); |
6527 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6528 | int i, buf_len; | |
6529 | char *p; | |
6530 | char *regs; | |
6531 | ||
6532 | buf_len = strlen (rs->buf); | |
6533 | ||
6534 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6535 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6536 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6537 | ||
6538 | /* Save the size of the packet sent to us by the target. It is used | |
6539 | as a heuristic when determining the max size of packets that the | |
6540 | target can safely receive. */ | |
6541 | if (rsa->actual_register_packet_size == 0) | |
6542 | rsa->actual_register_packet_size = buf_len; | |
6543 | ||
6544 | /* If this is smaller than we guessed the 'g' packet would be, | |
6545 | update our records. A 'g' reply that doesn't include a register's | |
6546 | value implies either that the register is not available, or that | |
6547 | the 'p' packet must be used. */ | |
6548 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6549 | { |
74ca34ce DJ |
6550 | rsa->sizeof_g_packet = buf_len / 2; |
6551 | ||
4a22f64d | 6552 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6553 | { |
74ca34ce DJ |
6554 | if (rsa->regs[i].pnum == -1) |
6555 | continue; | |
6556 | ||
6557 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6558 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6559 | else |
74ca34ce | 6560 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6561 | } |
74ca34ce | 6562 | } |
b323314b | 6563 | |
74ca34ce | 6564 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6565 | |
6566 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6567 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6568 | |
c906108c SS |
6569 | /* Reply describes registers byte by byte, each byte encoded as two |
6570 | hex characters. Suck them all up, then supply them to the | |
6571 | register cacheing/storage mechanism. */ | |
6572 | ||
74ca34ce | 6573 | p = rs->buf; |
ea9c271d | 6574 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6575 | { |
74ca34ce DJ |
6576 | if (p[0] == 0 || p[1] == 0) |
6577 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6578 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6579 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6580 | |
c906108c | 6581 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6582 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6583 | else |
6584 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6585 | p += 2; | |
6586 | } | |
6587 | ||
a744cf53 MS |
6588 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6589 | { | |
6590 | struct packet_reg *r = &rsa->regs[i]; | |
6591 | ||
6592 | if (r->in_g_packet) | |
6593 | { | |
6594 | if (r->offset * 2 >= strlen (rs->buf)) | |
6595 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6596 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6597 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6598 | else if (rs->buf[r->offset * 2] == 'x') |
6599 | { | |
6600 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6601 | /* The register isn't available, mark it as such (at | |
6602 | the same time setting the value to zero). */ | |
6603 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6604 | } | |
6605 | else | |
6606 | regcache_raw_supply (regcache, r->regnum, | |
6607 | regs + r->offset); | |
6608 | } | |
6609 | } | |
c906108c SS |
6610 | } |
6611 | ||
29709017 | 6612 | static void |
56be3814 | 6613 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6614 | { |
6615 | send_g_packet (); | |
56be3814 | 6616 | process_g_packet (regcache); |
29709017 DJ |
6617 | } |
6618 | ||
e6e4e701 PA |
6619 | /* Make the remote selected traceframe match GDB's selected |
6620 | traceframe. */ | |
6621 | ||
6622 | static void | |
6623 | set_remote_traceframe (void) | |
6624 | { | |
6625 | int newnum; | |
262e1174 | 6626 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6627 | |
262e1174 | 6628 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6629 | return; |
6630 | ||
6631 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6632 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6633 | |
6634 | newnum = target_trace_find (tfind_number, | |
6635 | get_traceframe_number (), 0, 0, NULL); | |
6636 | ||
6637 | /* Should not happen. If it does, all bets are off. */ | |
6638 | if (newnum != get_traceframe_number ()) | |
6639 | warning (_("could not set remote traceframe")); | |
6640 | } | |
6641 | ||
74ca34ce | 6642 | static void |
28439f5e PA |
6643 | remote_fetch_registers (struct target_ops *ops, |
6644 | struct regcache *regcache, int regnum) | |
74ca34ce | 6645 | { |
74ca34ce DJ |
6646 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6647 | int i; | |
6648 | ||
e6e4e701 | 6649 | set_remote_traceframe (); |
79d7f229 | 6650 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6651 | |
6652 | if (regnum >= 0) | |
6653 | { | |
6654 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6655 | |
74ca34ce DJ |
6656 | gdb_assert (reg != NULL); |
6657 | ||
6658 | /* If this register might be in the 'g' packet, try that first - | |
6659 | we are likely to read more than one register. If this is the | |
6660 | first 'g' packet, we might be overly optimistic about its | |
6661 | contents, so fall back to 'p'. */ | |
6662 | if (reg->in_g_packet) | |
6663 | { | |
56be3814 | 6664 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6665 | if (reg->in_g_packet) |
6666 | return; | |
6667 | } | |
6668 | ||
56be3814 | 6669 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6670 | return; |
6671 | ||
6672 | /* This register is not available. */ | |
56be3814 | 6673 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6674 | |
6675 | return; | |
6676 | } | |
6677 | ||
56be3814 | 6678 | fetch_registers_using_g (regcache); |
74ca34ce | 6679 | |
4a22f64d | 6680 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6681 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6682 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6683 | { |
6684 | /* This register is not available. */ | |
56be3814 | 6685 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6686 | } |
6687 | } | |
6688 | ||
c906108c SS |
6689 | /* Prepare to store registers. Since we may send them all (using a |
6690 | 'G' request), we have to read out the ones we don't want to change | |
6691 | first. */ | |
6692 | ||
c5aa993b | 6693 | static void |
f32dbf8c | 6694 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6695 | { |
ea9c271d | 6696 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6697 | int i; |
cfd77fa1 | 6698 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6699 | |
c906108c | 6700 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6701 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6702 | { |
6703 | case PACKET_DISABLE: | |
6704 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6705 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6706 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6707 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6708 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6709 | break; |
6710 | case PACKET_ENABLE: | |
6711 | break; | |
6712 | } | |
6713 | } | |
6714 | ||
ad10f812 | 6715 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6716 | packet was not recognized. */ |
5a2468f5 JM |
6717 | |
6718 | static int | |
1f4437a4 MS |
6719 | store_register_using_P (const struct regcache *regcache, |
6720 | struct packet_reg *reg) | |
5a2468f5 | 6721 | { |
4a22f64d | 6722 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6723 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6724 | /* Try storing a single register. */ |
6d820c5c | 6725 | char *buf = rs->buf; |
cfd77fa1 | 6726 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6727 | char *p; |
5a2468f5 | 6728 | |
4082afcc | 6729 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6730 | return 0; |
6731 | ||
6732 | if (reg->pnum == -1) | |
6733 | return 0; | |
6734 | ||
ea9c271d | 6735 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6736 | p = buf + strlen (buf); |
56be3814 | 6737 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6738 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6739 | putpkt (rs->buf); |
6740 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6741 | |
74ca34ce DJ |
6742 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6743 | { | |
6744 | case PACKET_OK: | |
6745 | return 1; | |
6746 | case PACKET_ERROR: | |
27a9c0bf MS |
6747 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6748 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6749 | case PACKET_UNKNOWN: |
6750 | return 0; | |
6751 | default: | |
6752 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6753 | } | |
c906108c SS |
6754 | } |
6755 | ||
23860348 MS |
6756 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6757 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6758 | |
6759 | static void | |
56be3814 | 6760 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6761 | { |
d01949b6 | 6762 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6763 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6764 | gdb_byte *regs; |
c906108c SS |
6765 | char *p; |
6766 | ||
193cb69f AC |
6767 | /* Extract all the registers in the regcache copying them into a |
6768 | local buffer. */ | |
6769 | { | |
b323314b | 6770 | int i; |
a744cf53 | 6771 | |
ea9c271d DJ |
6772 | regs = alloca (rsa->sizeof_g_packet); |
6773 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6774 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6775 | { |
ea9c271d | 6776 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6777 | |
b323314b | 6778 | if (r->in_g_packet) |
56be3814 | 6779 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6780 | } |
6781 | } | |
c906108c SS |
6782 | |
6783 | /* Command describes registers byte by byte, | |
6784 | each byte encoded as two hex characters. */ | |
6d820c5c | 6785 | p = rs->buf; |
193cb69f | 6786 | *p++ = 'G'; |
74ca34ce DJ |
6787 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6788 | updated. */ | |
6789 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6790 | putpkt (rs->buf); |
6791 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6792 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6793 | error (_("Could not write registers; remote failure reply '%s'"), |
6794 | rs->buf); | |
c906108c | 6795 | } |
74ca34ce DJ |
6796 | |
6797 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6798 | of the register cache buffer. FIXME: ignores errors. */ | |
6799 | ||
6800 | static void | |
28439f5e PA |
6801 | remote_store_registers (struct target_ops *ops, |
6802 | struct regcache *regcache, int regnum) | |
74ca34ce | 6803 | { |
74ca34ce DJ |
6804 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6805 | int i; | |
6806 | ||
e6e4e701 | 6807 | set_remote_traceframe (); |
79d7f229 | 6808 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6809 | |
6810 | if (regnum >= 0) | |
6811 | { | |
6812 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6813 | |
74ca34ce DJ |
6814 | gdb_assert (reg != NULL); |
6815 | ||
6816 | /* Always prefer to store registers using the 'P' packet if | |
6817 | possible; we often change only a small number of registers. | |
6818 | Sometimes we change a larger number; we'd need help from a | |
6819 | higher layer to know to use 'G'. */ | |
56be3814 | 6820 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6821 | return; |
6822 | ||
6823 | /* For now, don't complain if we have no way to write the | |
6824 | register. GDB loses track of unavailable registers too | |
6825 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6826 | any way to read the register, either... */ |
74ca34ce DJ |
6827 | if (!reg->in_g_packet) |
6828 | return; | |
6829 | ||
56be3814 | 6830 | store_registers_using_G (regcache); |
74ca34ce DJ |
6831 | return; |
6832 | } | |
6833 | ||
56be3814 | 6834 | store_registers_using_G (regcache); |
74ca34ce | 6835 | |
4a22f64d | 6836 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6837 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6838 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6839 | /* See above for why we do not issue an error here. */ |
6840 | continue; | |
6841 | } | |
c906108c SS |
6842 | \f |
6843 | ||
6844 | /* Return the number of hex digits in num. */ | |
6845 | ||
6846 | static int | |
fba45db2 | 6847 | hexnumlen (ULONGEST num) |
c906108c SS |
6848 | { |
6849 | int i; | |
6850 | ||
6851 | for (i = 0; num != 0; i++) | |
6852 | num >>= 4; | |
6853 | ||
6854 | return max (i, 1); | |
6855 | } | |
6856 | ||
2df3850c | 6857 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6858 | |
6859 | static int | |
fba45db2 | 6860 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6861 | { |
c906108c | 6862 | int len = hexnumlen (num); |
a744cf53 | 6863 | |
2df3850c JM |
6864 | return hexnumnstr (buf, num, len); |
6865 | } | |
6866 | ||
c906108c | 6867 | |
2df3850c | 6868 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6869 | |
2df3850c | 6870 | static int |
fba45db2 | 6871 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6872 | { |
6873 | int i; | |
6874 | ||
6875 | buf[width] = '\0'; | |
6876 | ||
6877 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6878 | { |
c5aa993b | 6879 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6880 | num >>= 4; |
6881 | } | |
6882 | ||
2df3850c | 6883 | return width; |
c906108c SS |
6884 | } |
6885 | ||
23860348 | 6886 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6887 | |
6888 | static CORE_ADDR | |
fba45db2 | 6889 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6890 | { |
883b9c6c | 6891 | unsigned int address_size = remote_address_size; |
a744cf53 | 6892 | |
911c95a5 UW |
6893 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6894 | if (!address_size) | |
f5656ead | 6895 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6896 | |
6897 | if (address_size > 0 | |
6898 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6899 | { |
6900 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6901 | in a ULONGEST variable. */ |
c906108c | 6902 | ULONGEST mask = 1; |
a744cf53 | 6903 | |
911c95a5 | 6904 | mask = (mask << address_size) - 1; |
c906108c SS |
6905 | addr &= mask; |
6906 | } | |
6907 | return addr; | |
6908 | } | |
6909 | ||
6910 | /* Determine whether the remote target supports binary downloading. | |
6911 | This is accomplished by sending a no-op memory write of zero length | |
6912 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6913 | the whole packet, since many stubs strip the eighth bit and |
6914 | subsequently compute a wrong checksum, which causes real havoc with | |
6915 | remote_write_bytes. | |
7a292a7a | 6916 | |
96baa820 | 6917 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6918 | clean. In cases like this, the user should clear "remote |
23860348 | 6919 | X-packet". */ |
96baa820 | 6920 | |
c906108c | 6921 | static void |
fba45db2 | 6922 | check_binary_download (CORE_ADDR addr) |
c906108c | 6923 | { |
d01949b6 | 6924 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6925 | |
4082afcc | 6926 | switch (packet_support (PACKET_X)) |
c906108c | 6927 | { |
96baa820 JM |
6928 | case PACKET_DISABLE: |
6929 | break; | |
6930 | case PACKET_ENABLE: | |
6931 | break; | |
6932 | case PACKET_SUPPORT_UNKNOWN: | |
6933 | { | |
96baa820 | 6934 | char *p; |
802188a7 | 6935 | |
2e9f7625 | 6936 | p = rs->buf; |
96baa820 JM |
6937 | *p++ = 'X'; |
6938 | p += hexnumstr (p, (ULONGEST) addr); | |
6939 | *p++ = ','; | |
6940 | p += hexnumstr (p, (ULONGEST) 0); | |
6941 | *p++ = ':'; | |
6942 | *p = '\0'; | |
802188a7 | 6943 | |
2e9f7625 | 6944 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6945 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6946 | |
2e9f7625 | 6947 | if (rs->buf[0] == '\0') |
96baa820 JM |
6948 | { |
6949 | if (remote_debug) | |
6950 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6951 | "binary downloading NOT " |
6952 | "supported by target\n"); | |
444abaca | 6953 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6954 | } |
6955 | else | |
6956 | { | |
6957 | if (remote_debug) | |
6958 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6959 | "binary downloading supported by target\n"); |
444abaca | 6960 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6961 | } |
6962 | break; | |
6963 | } | |
c906108c SS |
6964 | } |
6965 | } | |
6966 | ||
124e13d9 SM |
6967 | /* Helper function to resize the payload in order to try to get a good |
6968 | alignment. We try to write an amount of data such that the next write will | |
6969 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
6970 | ||
6971 | static int | |
6972 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
6973 | { | |
6974 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6975 | } | |
6976 | ||
c906108c SS |
6977 | /* Write memory data directly to the remote machine. |
6978 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6979 | HEADER is the starting part of the packet. |
c906108c SS |
6980 | MEMADDR is the address in the remote memory space. |
6981 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
6982 | LEN_UNITS is the number of addressable units to write. |
6983 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
6984 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6985 | should send data as binary ('X'), or hex-encoded ('M'). | |
6986 | ||
6987 | The function creates packet of the form | |
6988 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6989 | ||
124e13d9 | 6990 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
6991 | |
6992 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6993 | are omitted. | |
6994 | ||
9b409511 | 6995 | Return the transferred status, error or OK (an |
124e13d9 SM |
6996 | 'enum target_xfer_status' value). Save the number of addressable units |
6997 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
6998 | ||
6999 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7000 | exchange between gdb and the stub could look like (?? in place of the | |
7001 | checksum): | |
7002 | ||
7003 | -> $m1000,4#?? | |
7004 | <- aaaabbbbccccdddd | |
7005 | ||
7006 | -> $M1000,3:eeeeffffeeee#?? | |
7007 | <- OK | |
7008 | ||
7009 | -> $m1000,4#?? | |
7010 | <- eeeeffffeeeedddd */ | |
c906108c | 7011 | |
9b409511 | 7012 | static enum target_xfer_status |
a76d924d | 7013 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7014 | const gdb_byte *myaddr, ULONGEST len_units, |
7015 | int unit_size, ULONGEST *xfered_len_units, | |
7016 | char packet_format, int use_length) | |
c906108c | 7017 | { |
6d820c5c | 7018 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7019 | char *p; |
a76d924d DJ |
7020 | char *plen = NULL; |
7021 | int plenlen = 0; | |
124e13d9 SM |
7022 | int todo_units; |
7023 | int units_written; | |
7024 | int payload_capacity_bytes; | |
7025 | int payload_length_bytes; | |
a76d924d DJ |
7026 | |
7027 | if (packet_format != 'X' && packet_format != 'M') | |
7028 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7029 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7030 | |
124e13d9 | 7031 | if (len_units == 0) |
9b409511 | 7032 | return TARGET_XFER_EOF; |
b2182ed2 | 7033 | |
124e13d9 | 7034 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7035 | |
6d820c5c DJ |
7036 | /* The packet buffer will be large enough for the payload; |
7037 | get_memory_packet_size ensures this. */ | |
a76d924d | 7038 | rs->buf[0] = '\0'; |
c906108c | 7039 | |
a257b5bb | 7040 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7041 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7042 | ||
124e13d9 | 7043 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7044 | if (!use_length) |
0df8b418 | 7045 | /* The comma won't be used. */ |
124e13d9 SM |
7046 | payload_capacity_bytes += 1; |
7047 | payload_capacity_bytes -= strlen (header); | |
7048 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7049 | |
a76d924d | 7050 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7051 | |
a76d924d DJ |
7052 | strcat (rs->buf, header); |
7053 | p = rs->buf + strlen (header); | |
7054 | ||
7055 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7056 | if (packet_format == 'X') | |
c906108c | 7057 | { |
23860348 | 7058 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7059 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7060 | if (use_length) |
124e13d9 SM |
7061 | payload_capacity_bytes -= hexnumlen (todo_units); |
7062 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7063 | } |
7064 | else | |
7065 | { | |
124e13d9 SM |
7066 | /* Number of bytes that will fit. */ |
7067 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7068 | if (use_length) |
124e13d9 SM |
7069 | payload_capacity_bytes -= hexnumlen (todo_units); |
7070 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7071 | } |
a76d924d | 7072 | |
124e13d9 | 7073 | if (todo_units <= 0) |
3de11b2e | 7074 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7075 | _("minimum packet size too small to write data")); |
802188a7 | 7076 | |
6765f3e5 DJ |
7077 | /* If we already need another packet, then try to align the end |
7078 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7079 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7080 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7081 | |
a257b5bb | 7082 | /* Append "<memaddr>". */ |
917317f4 JM |
7083 | memaddr = remote_address_masked (memaddr); |
7084 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7085 | |
a76d924d DJ |
7086 | if (use_length) |
7087 | { | |
7088 | /* Append ",". */ | |
7089 | *p++ = ','; | |
802188a7 | 7090 | |
124e13d9 SM |
7091 | /* Append the length and retain its location and size. It may need to be |
7092 | adjusted once the packet body has been created. */ | |
a76d924d | 7093 | plen = p; |
124e13d9 | 7094 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7095 | p += plenlen; |
7096 | } | |
a257b5bb AC |
7097 | |
7098 | /* Append ":". */ | |
917317f4 JM |
7099 | *p++ = ':'; |
7100 | *p = '\0'; | |
802188a7 | 7101 | |
a257b5bb | 7102 | /* Append the packet body. */ |
a76d924d | 7103 | if (packet_format == 'X') |
917317f4 | 7104 | { |
917317f4 JM |
7105 | /* Binary mode. Send target system values byte by byte, in |
7106 | increasing byte addresses. Only escape certain critical | |
7107 | characters. */ | |
124e13d9 SM |
7108 | payload_length_bytes = |
7109 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7110 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7111 | |
124e13d9 | 7112 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7113 | a second try to keep the end of the packet aligned. Don't do |
7114 | this if the packet is tiny. */ | |
124e13d9 | 7115 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7116 | { |
124e13d9 SM |
7117 | int new_todo_units; |
7118 | ||
7119 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7120 | ||
7121 | if (new_todo_units != units_written) | |
7122 | payload_length_bytes = | |
7123 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7124 | (gdb_byte *) p, &units_written, | |
7125 | payload_capacity_bytes); | |
6765f3e5 DJ |
7126 | } |
7127 | ||
124e13d9 SM |
7128 | p += payload_length_bytes; |
7129 | if (use_length && units_written < todo_units) | |
c906108c | 7130 | { |
802188a7 | 7131 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7132 | and we have actually sent fewer units than planned. |
917317f4 JM |
7133 | Fix-up the length field of the packet. Use the same |
7134 | number of characters as before. */ | |
124e13d9 SM |
7135 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7136 | plenlen); | |
917317f4 | 7137 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7138 | } |
a76d924d DJ |
7139 | } |
7140 | else | |
7141 | { | |
917317f4 JM |
7142 | /* Normal mode: Send target system values byte by byte, in |
7143 | increasing byte addresses. Each byte is encoded as a two hex | |
7144 | value. */ | |
124e13d9 SM |
7145 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7146 | units_written = todo_units; | |
c906108c | 7147 | } |
802188a7 | 7148 | |
2e9f7625 | 7149 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7150 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7151 | |
2e9f7625 | 7152 | if (rs->buf[0] == 'E') |
00d84524 | 7153 | return TARGET_XFER_E_IO; |
802188a7 | 7154 | |
124e13d9 SM |
7155 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7156 | send fewer units than we'd planned. */ | |
7157 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7158 | return TARGET_XFER_OK; |
c906108c SS |
7159 | } |
7160 | ||
a76d924d DJ |
7161 | /* Write memory data directly to the remote machine. |
7162 | This does not inform the data cache; the data cache uses this. | |
7163 | MEMADDR is the address in the remote memory space. | |
7164 | MYADDR is the address of the buffer in our space. | |
7165 | LEN is the number of bytes. | |
7166 | ||
9b409511 YQ |
7167 | Return the transferred status, error or OK (an |
7168 | 'enum target_xfer_status' value). Save the number of bytes | |
7169 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7170 | |
9b409511 YQ |
7171 | static enum target_xfer_status |
7172 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7173 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7174 | { |
7175 | char *packet_format = 0; | |
7176 | ||
7177 | /* Check whether the target supports binary download. */ | |
7178 | check_binary_download (memaddr); | |
7179 | ||
4082afcc | 7180 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7181 | { |
7182 | case PACKET_ENABLE: | |
7183 | packet_format = "X"; | |
7184 | break; | |
7185 | case PACKET_DISABLE: | |
7186 | packet_format = "M"; | |
7187 | break; | |
7188 | case PACKET_SUPPORT_UNKNOWN: | |
7189 | internal_error (__FILE__, __LINE__, | |
7190 | _("remote_write_bytes: bad internal state")); | |
7191 | default: | |
7192 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7193 | } | |
7194 | ||
7195 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7196 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7197 | packet_format[0], 1); |
a76d924d DJ |
7198 | } |
7199 | ||
9217e74e YQ |
7200 | /* Read memory data directly from the remote machine. |
7201 | This does not use the data cache; the data cache uses this. | |
7202 | MEMADDR is the address in the remote memory space. | |
7203 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7204 | LEN_UNITS is the number of addressable memory units to read.. |
7205 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7206 | |
7207 | Return the transferred status, error or OK (an | |
7208 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7209 | transferred in *XFERED_LEN_UNITS. |
7210 | ||
7211 | See the comment of remote_write_bytes_aux for an example of | |
7212 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7213 | |
7214 | static enum target_xfer_status | |
124e13d9 SM |
7215 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7216 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7217 | { |
7218 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7219 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7220 | char *p; |
124e13d9 SM |
7221 | int todo_units; |
7222 | int decoded_bytes; | |
9217e74e | 7223 | |
124e13d9 | 7224 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7225 | /* The packet buffer will be large enough for the payload; |
7226 | get_memory_packet_size ensures this. */ | |
7227 | ||
124e13d9 SM |
7228 | /* Number of units that will fit. */ |
7229 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7230 | |
7231 | /* Construct "m"<memaddr>","<len>". */ | |
7232 | memaddr = remote_address_masked (memaddr); | |
7233 | p = rs->buf; | |
7234 | *p++ = 'm'; | |
7235 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7236 | *p++ = ','; | |
124e13d9 | 7237 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7238 | *p = '\0'; |
7239 | putpkt (rs->buf); | |
7240 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7241 | if (rs->buf[0] == 'E' | |
7242 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7243 | && rs->buf[3] == '\0') | |
7244 | return TARGET_XFER_E_IO; | |
7245 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7246 | characters. */ | |
7247 | p = rs->buf; | |
124e13d9 | 7248 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7249 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7250 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7251 | return TARGET_XFER_OK; |
7252 | } | |
7253 | ||
b55fbac4 YQ |
7254 | /* Using the set of read-only target sections of remote, read live |
7255 | read-only memory. | |
8acf9577 YQ |
7256 | |
7257 | For interface/parameters/return description see target.h, | |
7258 | to_xfer_partial. */ | |
7259 | ||
7260 | static enum target_xfer_status | |
b55fbac4 YQ |
7261 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7262 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7263 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7264 | { |
7265 | struct target_section *secp; | |
7266 | struct target_section_table *table; | |
7267 | ||
7268 | secp = target_section_by_addr (ops, memaddr); | |
7269 | if (secp != NULL | |
7270 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7271 | secp->the_bfd_section) | |
7272 | & SEC_READONLY)) | |
7273 | { | |
7274 | struct target_section *p; | |
7275 | ULONGEST memend = memaddr + len; | |
7276 | ||
7277 | table = target_get_section_table (ops); | |
7278 | ||
7279 | for (p = table->sections; p < table->sections_end; p++) | |
7280 | { | |
7281 | if (memaddr >= p->addr) | |
7282 | { | |
7283 | if (memend <= p->endaddr) | |
7284 | { | |
7285 | /* Entire transfer is within this section. */ | |
124e13d9 | 7286 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7287 | xfered_len); |
8acf9577 YQ |
7288 | } |
7289 | else if (memaddr >= p->endaddr) | |
7290 | { | |
7291 | /* This section ends before the transfer starts. */ | |
7292 | continue; | |
7293 | } | |
7294 | else | |
7295 | { | |
7296 | /* This section overlaps the transfer. Just do half. */ | |
7297 | len = p->endaddr - memaddr; | |
124e13d9 | 7298 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7299 | xfered_len); |
8acf9577 YQ |
7300 | } |
7301 | } | |
7302 | } | |
7303 | } | |
7304 | ||
7305 | return TARGET_XFER_EOF; | |
7306 | } | |
7307 | ||
9217e74e YQ |
7308 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7309 | first if the requested memory is unavailable in traceframe. | |
7310 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7311 | |
9b409511 | 7312 | static enum target_xfer_status |
8acf9577 | 7313 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7314 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7315 | ULONGEST *xfered_len) | |
c906108c | 7316 | { |
6b6aa828 | 7317 | if (len == 0) |
96c4f946 | 7318 | return TARGET_XFER_EOF; |
b2182ed2 | 7319 | |
8acf9577 YQ |
7320 | if (get_traceframe_number () != -1) |
7321 | { | |
7322 | VEC(mem_range_s) *available; | |
7323 | ||
7324 | /* If we fail to get the set of available memory, then the | |
7325 | target does not support querying traceframe info, and so we | |
7326 | attempt reading from the traceframe anyway (assuming the | |
7327 | target implements the old QTro packet then). */ | |
7328 | if (traceframe_available_memory (&available, memaddr, len)) | |
7329 | { | |
7330 | struct cleanup *old_chain; | |
7331 | ||
7332 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7333 | ||
7334 | if (VEC_empty (mem_range_s, available) | |
7335 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7336 | { | |
7337 | enum target_xfer_status res; | |
7338 | ||
7339 | /* Don't read into the traceframe's available | |
7340 | memory. */ | |
7341 | if (!VEC_empty (mem_range_s, available)) | |
7342 | { | |
7343 | LONGEST oldlen = len; | |
7344 | ||
7345 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7346 | gdb_assert (len <= oldlen); | |
7347 | } | |
7348 | ||
7349 | do_cleanups (old_chain); | |
7350 | ||
7351 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7352 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7353 | len, unit_size, xfered_len); |
8acf9577 YQ |
7354 | if (res == TARGET_XFER_OK) |
7355 | return TARGET_XFER_OK; | |
7356 | else | |
7357 | { | |
7358 | /* No use trying further, we know some memory starting | |
7359 | at MEMADDR isn't available. */ | |
7360 | *xfered_len = len; | |
7361 | return TARGET_XFER_UNAVAILABLE; | |
7362 | } | |
7363 | } | |
7364 | ||
7365 | /* Don't try to read more than how much is available, in | |
7366 | case the target implements the deprecated QTro packet to | |
7367 | cater for older GDBs (the target's knowledge of read-only | |
7368 | sections may be outdated by now). */ | |
7369 | len = VEC_index (mem_range_s, available, 0)->length; | |
7370 | ||
7371 | do_cleanups (old_chain); | |
7372 | } | |
7373 | } | |
7374 | ||
124e13d9 | 7375 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7376 | } |
74531fed | 7377 | |
c906108c | 7378 | \f |
c906108c | 7379 | |
a76d924d DJ |
7380 | /* Sends a packet with content determined by the printf format string |
7381 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7382 | whether the packet was a success, a failure, or unknown. */ | |
7383 | ||
77b64a49 PA |
7384 | static enum packet_result remote_send_printf (const char *format, ...) |
7385 | ATTRIBUTE_PRINTF (1, 2); | |
7386 | ||
2c0b251b | 7387 | static enum packet_result |
a76d924d DJ |
7388 | remote_send_printf (const char *format, ...) |
7389 | { | |
7390 | struct remote_state *rs = get_remote_state (); | |
7391 | int max_size = get_remote_packet_size (); | |
a76d924d | 7392 | va_list ap; |
a744cf53 | 7393 | |
a76d924d DJ |
7394 | va_start (ap, format); |
7395 | ||
7396 | rs->buf[0] = '\0'; | |
7397 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7398 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7399 | |
7400 | if (putpkt (rs->buf) < 0) | |
7401 | error (_("Communication problem with target.")); | |
7402 | ||
7403 | rs->buf[0] = '\0'; | |
7404 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7405 | ||
7406 | return packet_check_result (rs->buf); | |
7407 | } | |
7408 | ||
7409 | static void | |
7410 | restore_remote_timeout (void *p) | |
7411 | { | |
7412 | int value = *(int *)p; | |
a744cf53 | 7413 | |
a76d924d DJ |
7414 | remote_timeout = value; |
7415 | } | |
7416 | ||
7417 | /* Flash writing can take quite some time. We'll set | |
7418 | effectively infinite timeout for flash operations. | |
7419 | In future, we'll need to decide on a better approach. */ | |
7420 | static const int remote_flash_timeout = 1000; | |
7421 | ||
7422 | static void | |
7423 | remote_flash_erase (struct target_ops *ops, | |
7424 | ULONGEST address, LONGEST length) | |
7425 | { | |
f5656ead | 7426 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7427 | int saved_remote_timeout = remote_timeout; |
7428 | enum packet_result ret; | |
a76d924d DJ |
7429 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7430 | &saved_remote_timeout); | |
a744cf53 | 7431 | |
a76d924d DJ |
7432 | remote_timeout = remote_flash_timeout; |
7433 | ||
7434 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7435 | phex (address, addr_size), |
a76d924d DJ |
7436 | phex (length, 4)); |
7437 | switch (ret) | |
7438 | { | |
7439 | case PACKET_UNKNOWN: | |
7440 | error (_("Remote target does not support flash erase")); | |
7441 | case PACKET_ERROR: | |
7442 | error (_("Error erasing flash with vFlashErase packet")); | |
7443 | default: | |
7444 | break; | |
7445 | } | |
7446 | ||
7447 | do_cleanups (back_to); | |
7448 | } | |
7449 | ||
9b409511 YQ |
7450 | static enum target_xfer_status |
7451 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7452 | ULONGEST length, ULONGEST *xfered_len, | |
7453 | const gdb_byte *data) | |
a76d924d DJ |
7454 | { |
7455 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7456 | enum target_xfer_status ret; |
a76d924d | 7457 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7458 | &saved_remote_timeout); |
a76d924d DJ |
7459 | |
7460 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7461 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 7462 | xfered_len,'X', 0); |
a76d924d DJ |
7463 | do_cleanups (back_to); |
7464 | ||
7465 | return ret; | |
7466 | } | |
7467 | ||
7468 | static void | |
7469 | remote_flash_done (struct target_ops *ops) | |
7470 | { | |
7471 | int saved_remote_timeout = remote_timeout; | |
7472 | int ret; | |
7473 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7474 | &saved_remote_timeout); | |
7475 | ||
7476 | remote_timeout = remote_flash_timeout; | |
7477 | ret = remote_send_printf ("vFlashDone"); | |
7478 | do_cleanups (back_to); | |
7479 | ||
7480 | switch (ret) | |
7481 | { | |
7482 | case PACKET_UNKNOWN: | |
7483 | error (_("Remote target does not support vFlashDone")); | |
7484 | case PACKET_ERROR: | |
7485 | error (_("Error finishing flash operation")); | |
7486 | default: | |
7487 | break; | |
7488 | } | |
7489 | } | |
7490 | ||
c906108c | 7491 | static void |
fba45db2 | 7492 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7493 | { |
7494 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7495 | } | |
7496 | \f | |
7497 | /* Stuff for dealing with the packets which are part of this protocol. | |
7498 | See comment at top of file for details. */ | |
7499 | ||
1927e618 PA |
7500 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7501 | error to higher layers. Called when a serial error is detected. | |
7502 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7503 | the system error message for errno at function entry and final dot |
7504 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7505 | |
7506 | static void | |
7507 | unpush_and_perror (const char *string) | |
7508 | { | |
d6cb50a2 | 7509 | int saved_errno = errno; |
1927e618 PA |
7510 | |
7511 | remote_unpush_target (); | |
d6cb50a2 JK |
7512 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7513 | safe_strerror (saved_errno)); | |
1927e618 PA |
7514 | } |
7515 | ||
0876f84a | 7516 | /* Read a single character from the remote end. */ |
c906108c SS |
7517 | |
7518 | static int | |
fba45db2 | 7519 | readchar (int timeout) |
c906108c SS |
7520 | { |
7521 | int ch; | |
5d93a237 | 7522 | struct remote_state *rs = get_remote_state (); |
c906108c | 7523 | |
5d93a237 | 7524 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7525 | |
2acceee2 | 7526 | if (ch >= 0) |
0876f84a | 7527 | return ch; |
2acceee2 JM |
7528 | |
7529 | switch ((enum serial_rc) ch) | |
c906108c SS |
7530 | { |
7531 | case SERIAL_EOF: | |
78a095c3 | 7532 | remote_unpush_target (); |
598d3636 | 7533 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7534 | /* no return */ |
c906108c | 7535 | case SERIAL_ERROR: |
1927e618 PA |
7536 | unpush_and_perror (_("Remote communication error. " |
7537 | "Target disconnected.")); | |
2acceee2 | 7538 | /* no return */ |
c906108c | 7539 | case SERIAL_TIMEOUT: |
2acceee2 | 7540 | break; |
c906108c | 7541 | } |
2acceee2 | 7542 | return ch; |
c906108c SS |
7543 | } |
7544 | ||
c33e31fd PA |
7545 | /* Wrapper for serial_write that closes the target and throws if |
7546 | writing fails. */ | |
7547 | ||
7548 | static void | |
7549 | remote_serial_write (const char *str, int len) | |
7550 | { | |
5d93a237 TT |
7551 | struct remote_state *rs = get_remote_state (); |
7552 | ||
7553 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7554 | { |
1927e618 PA |
7555 | unpush_and_perror (_("Remote communication error. " |
7556 | "Target disconnected.")); | |
c33e31fd PA |
7557 | } |
7558 | } | |
7559 | ||
6d820c5c DJ |
7560 | /* Send the command in *BUF to the remote machine, and read the reply |
7561 | into *BUF. Report an error if we get an error reply. Resize | |
7562 | *BUF using xrealloc if necessary to hold the result, and update | |
7563 | *SIZEOF_BUF. */ | |
c906108c SS |
7564 | |
7565 | static void | |
6d820c5c DJ |
7566 | remote_send (char **buf, |
7567 | long *sizeof_buf) | |
c906108c | 7568 | { |
6d820c5c | 7569 | putpkt (*buf); |
c2d11a7d | 7570 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7571 | |
6d820c5c DJ |
7572 | if ((*buf)[0] == 'E') |
7573 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7574 | } |
7575 | ||
6e5abd65 PA |
7576 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7577 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7578 | etc. The caller is responsible for releasing the returned | |
7579 | memory. */ | |
7580 | ||
7581 | static char * | |
7582 | escape_buffer (const char *buf, int n) | |
7583 | { | |
7584 | struct cleanup *old_chain; | |
7585 | struct ui_file *stb; | |
7586 | char *str; | |
6e5abd65 PA |
7587 | |
7588 | stb = mem_fileopen (); | |
7589 | old_chain = make_cleanup_ui_file_delete (stb); | |
7590 | ||
6ef284bd | 7591 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7592 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7593 | do_cleanups (old_chain); |
7594 | return str; | |
7595 | } | |
7596 | ||
c906108c SS |
7597 | /* Display a null-terminated packet on stdout, for debugging, using C |
7598 | string notation. */ | |
7599 | ||
7600 | static void | |
baa336ce | 7601 | print_packet (const char *buf) |
c906108c SS |
7602 | { |
7603 | puts_filtered ("\""); | |
43e526b9 | 7604 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7605 | puts_filtered ("\""); |
7606 | } | |
7607 | ||
7608 | int | |
baa336ce | 7609 | putpkt (const char *buf) |
c906108c SS |
7610 | { |
7611 | return putpkt_binary (buf, strlen (buf)); | |
7612 | } | |
7613 | ||
7614 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7615 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7616 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7617 | and for a possible /0 if we are debugging (remote_debug) and want |
7618 | to print the sent packet as a string. */ | |
c906108c SS |
7619 | |
7620 | static int | |
baa336ce | 7621 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7622 | { |
2d717e4f | 7623 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7624 | int i; |
7625 | unsigned char csum = 0; | |
11cf8741 | 7626 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7627 | |
c906108c SS |
7628 | int ch; |
7629 | int tcount = 0; | |
7630 | char *p; | |
dd61ec5c | 7631 | char *message; |
c906108c | 7632 | |
e24a49d8 PA |
7633 | /* Catch cases like trying to read memory or listing threads while |
7634 | we're waiting for a stop reply. The remote server wouldn't be | |
7635 | ready to handle this request, so we'd hang and timeout. We don't | |
7636 | have to worry about this in synchronous mode, because in that | |
7637 | case it's not possible to issue a command while the target is | |
74531fed PA |
7638 | running. This is not a problem in non-stop mode, because in that |
7639 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7640 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7641 | { |
7642 | error (_("Cannot execute this command while the target is running.\n" | |
7643 | "Use the \"interrupt\" command to stop the target\n" | |
7644 | "and then try again.")); | |
7645 | } | |
e24a49d8 | 7646 | |
2d717e4f DJ |
7647 | /* We're sending out a new packet. Make sure we don't look at a |
7648 | stale cached response. */ | |
7649 | rs->cached_wait_status = 0; | |
7650 | ||
c906108c SS |
7651 | /* Copy the packet into buffer BUF2, encapsulating it |
7652 | and giving it a checksum. */ | |
7653 | ||
c906108c SS |
7654 | p = buf2; |
7655 | *p++ = '$'; | |
7656 | ||
7657 | for (i = 0; i < cnt; i++) | |
7658 | { | |
7659 | csum += buf[i]; | |
7660 | *p++ = buf[i]; | |
7661 | } | |
7662 | *p++ = '#'; | |
7663 | *p++ = tohex ((csum >> 4) & 0xf); | |
7664 | *p++ = tohex (csum & 0xf); | |
7665 | ||
7666 | /* Send it over and over until we get a positive ack. */ | |
7667 | ||
7668 | while (1) | |
7669 | { | |
7670 | int started_error_output = 0; | |
7671 | ||
7672 | if (remote_debug) | |
7673 | { | |
6e5abd65 PA |
7674 | struct cleanup *old_chain; |
7675 | char *str; | |
7676 | ||
c906108c | 7677 | *p = '\0'; |
6e5abd65 PA |
7678 | str = escape_buffer (buf2, p - buf2); |
7679 | old_chain = make_cleanup (xfree, str); | |
7680 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7681 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7682 | do_cleanups (old_chain); |
c906108c | 7683 | } |
c33e31fd | 7684 | remote_serial_write (buf2, p - buf2); |
c906108c | 7685 | |
a6f3e723 SL |
7686 | /* If this is a no acks version of the remote protocol, send the |
7687 | packet and move on. */ | |
7688 | if (rs->noack_mode) | |
7689 | break; | |
7690 | ||
74531fed PA |
7691 | /* Read until either a timeout occurs (-2) or '+' is read. |
7692 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7693 | while (1) |
7694 | { | |
7695 | ch = readchar (remote_timeout); | |
7696 | ||
c5aa993b | 7697 | if (remote_debug) |
c906108c SS |
7698 | { |
7699 | switch (ch) | |
7700 | { | |
7701 | case '+': | |
1216fa2c | 7702 | case '-': |
c906108c SS |
7703 | case SERIAL_TIMEOUT: |
7704 | case '$': | |
74531fed | 7705 | case '%': |
c906108c SS |
7706 | if (started_error_output) |
7707 | { | |
7708 | putchar_unfiltered ('\n'); | |
7709 | started_error_output = 0; | |
7710 | } | |
7711 | } | |
7712 | } | |
7713 | ||
7714 | switch (ch) | |
7715 | { | |
7716 | case '+': | |
7717 | if (remote_debug) | |
0f71a2f6 | 7718 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7719 | return 1; |
1216fa2c AC |
7720 | case '-': |
7721 | if (remote_debug) | |
7722 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7723 | /* FALLTHROUGH */ |
c906108c | 7724 | case SERIAL_TIMEOUT: |
c5aa993b | 7725 | tcount++; |
c906108c SS |
7726 | if (tcount > 3) |
7727 | return 0; | |
23860348 | 7728 | break; /* Retransmit buffer. */ |
c906108c SS |
7729 | case '$': |
7730 | { | |
40e3f985 | 7731 | if (remote_debug) |
2bc416ba | 7732 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7733 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7734 | /* It's probably an old response sent because an ACK |
7735 | was lost. Gobble up the packet and ack it so it | |
7736 | doesn't get retransmitted when we resend this | |
7737 | packet. */ | |
6d820c5c | 7738 | skip_frame (); |
c33e31fd | 7739 | remote_serial_write ("+", 1); |
23860348 | 7740 | continue; /* Now, go look for +. */ |
c906108c | 7741 | } |
74531fed PA |
7742 | |
7743 | case '%': | |
7744 | { | |
7745 | int val; | |
7746 | ||
7747 | /* If we got a notification, handle it, and go back to looking | |
7748 | for an ack. */ | |
7749 | /* We've found the start of a notification. Now | |
7750 | collect the data. */ | |
7751 | val = read_frame (&rs->buf, &rs->buf_size); | |
7752 | if (val >= 0) | |
7753 | { | |
7754 | if (remote_debug) | |
7755 | { | |
6e5abd65 PA |
7756 | struct cleanup *old_chain; |
7757 | char *str; | |
7758 | ||
7759 | str = escape_buffer (rs->buf, val); | |
7760 | old_chain = make_cleanup (xfree, str); | |
7761 | fprintf_unfiltered (gdb_stdlog, | |
7762 | " Notification received: %s\n", | |
7763 | str); | |
7764 | do_cleanups (old_chain); | |
74531fed | 7765 | } |
5965e028 | 7766 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7767 | /* We're in sync now, rewait for the ack. */ |
7768 | tcount = 0; | |
7769 | } | |
7770 | else | |
7771 | { | |
7772 | if (remote_debug) | |
7773 | { | |
7774 | if (!started_error_output) | |
7775 | { | |
7776 | started_error_output = 1; | |
7777 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7778 | } | |
7779 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7780 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7781 | } | |
7782 | } | |
7783 | continue; | |
7784 | } | |
7785 | /* fall-through */ | |
c906108c SS |
7786 | default: |
7787 | if (remote_debug) | |
7788 | { | |
7789 | if (!started_error_output) | |
7790 | { | |
7791 | started_error_output = 1; | |
0f71a2f6 | 7792 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7793 | } |
0f71a2f6 | 7794 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7795 | } |
7796 | continue; | |
7797 | } | |
23860348 | 7798 | break; /* Here to retransmit. */ |
c906108c SS |
7799 | } |
7800 | ||
7801 | #if 0 | |
7802 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7803 | able to get out next time we call QUIT, without anything as |
7804 | violent as interrupt_query. If we want to provide a way out of | |
7805 | here without getting to the next QUIT, it should be based on | |
7806 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7807 | if (quit_flag) |
7808 | { | |
7809 | quit_flag = 0; | |
7810 | interrupt_query (); | |
7811 | } | |
7812 | #endif | |
7813 | } | |
a6f3e723 | 7814 | return 0; |
c906108c SS |
7815 | } |
7816 | ||
6d820c5c DJ |
7817 | /* Come here after finding the start of a frame when we expected an |
7818 | ack. Do our best to discard the rest of this packet. */ | |
7819 | ||
7820 | static void | |
7821 | skip_frame (void) | |
7822 | { | |
7823 | int c; | |
7824 | ||
7825 | while (1) | |
7826 | { | |
7827 | c = readchar (remote_timeout); | |
7828 | switch (c) | |
7829 | { | |
7830 | case SERIAL_TIMEOUT: | |
7831 | /* Nothing we can do. */ | |
7832 | return; | |
7833 | case '#': | |
7834 | /* Discard the two bytes of checksum and stop. */ | |
7835 | c = readchar (remote_timeout); | |
7836 | if (c >= 0) | |
7837 | c = readchar (remote_timeout); | |
7838 | ||
7839 | return; | |
7840 | case '*': /* Run length encoding. */ | |
7841 | /* Discard the repeat count. */ | |
7842 | c = readchar (remote_timeout); | |
7843 | if (c < 0) | |
7844 | return; | |
7845 | break; | |
7846 | default: | |
7847 | /* A regular character. */ | |
7848 | break; | |
7849 | } | |
7850 | } | |
7851 | } | |
7852 | ||
c906108c | 7853 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7854 | into *BUF, verifying the checksum, length, and handling run-length |
7855 | compression. NUL terminate the buffer. If there is not enough room, | |
7856 | expand *BUF using xrealloc. | |
c906108c | 7857 | |
c2d11a7d JM |
7858 | Returns -1 on error, number of characters in buffer (ignoring the |
7859 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7860 | SERIAL status indications). */ |
c2d11a7d JM |
7861 | |
7862 | static long | |
6d820c5c DJ |
7863 | read_frame (char **buf_p, |
7864 | long *sizeof_buf) | |
c906108c SS |
7865 | { |
7866 | unsigned char csum; | |
c2d11a7d | 7867 | long bc; |
c906108c | 7868 | int c; |
6d820c5c | 7869 | char *buf = *buf_p; |
a6f3e723 | 7870 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7871 | |
7872 | csum = 0; | |
c2d11a7d | 7873 | bc = 0; |
c906108c SS |
7874 | |
7875 | while (1) | |
7876 | { | |
7877 | c = readchar (remote_timeout); | |
c906108c SS |
7878 | switch (c) |
7879 | { | |
7880 | case SERIAL_TIMEOUT: | |
7881 | if (remote_debug) | |
0f71a2f6 | 7882 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7883 | return -1; |
c906108c SS |
7884 | case '$': |
7885 | if (remote_debug) | |
0f71a2f6 JM |
7886 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7887 | gdb_stdlog); | |
23860348 | 7888 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7889 | case '#': |
7890 | { | |
7891 | unsigned char pktcsum; | |
e1b09194 AC |
7892 | int check_0 = 0; |
7893 | int check_1 = 0; | |
c906108c | 7894 | |
c2d11a7d | 7895 | buf[bc] = '\0'; |
c906108c | 7896 | |
e1b09194 AC |
7897 | check_0 = readchar (remote_timeout); |
7898 | if (check_0 >= 0) | |
7899 | check_1 = readchar (remote_timeout); | |
802188a7 | 7900 | |
e1b09194 AC |
7901 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7902 | { | |
7903 | if (remote_debug) | |
2bc416ba | 7904 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7905 | gdb_stdlog); |
e1b09194 AC |
7906 | return -1; |
7907 | } | |
7908 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7909 | { |
7910 | if (remote_debug) | |
2bc416ba | 7911 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7912 | gdb_stdlog); |
40e3f985 FN |
7913 | return -1; |
7914 | } | |
c906108c | 7915 | |
a6f3e723 SL |
7916 | /* Don't recompute the checksum; with no ack packets we |
7917 | don't have any way to indicate a packet retransmission | |
7918 | is necessary. */ | |
7919 | if (rs->noack_mode) | |
7920 | return bc; | |
7921 | ||
e1b09194 | 7922 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7923 | if (csum == pktcsum) |
c2d11a7d | 7924 | return bc; |
c906108c | 7925 | |
c5aa993b | 7926 | if (remote_debug) |
c906108c | 7927 | { |
6e5abd65 PA |
7928 | struct cleanup *old_chain; |
7929 | char *str; | |
7930 | ||
7931 | str = escape_buffer (buf, bc); | |
7932 | old_chain = make_cleanup (xfree, str); | |
7933 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7934 | "Bad checksum, sentsum=0x%x, " |
7935 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7936 | pktcsum, csum, str); |
7937 | do_cleanups (old_chain); | |
c906108c | 7938 | } |
c2d11a7d | 7939 | /* Number of characters in buffer ignoring trailing |
23860348 | 7940 | NULL. */ |
c2d11a7d | 7941 | return -1; |
c906108c | 7942 | } |
23860348 | 7943 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7944 | { |
7945 | int repeat; | |
c906108c | 7946 | |
a744cf53 | 7947 | csum += c; |
b4501125 AC |
7948 | c = readchar (remote_timeout); |
7949 | csum += c; | |
23860348 | 7950 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7951 | |
23860348 | 7952 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7953 | |
6d820c5c | 7954 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7955 | { |
6d820c5c DJ |
7956 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7957 | { | |
7958 | /* Make some more room in the buffer. */ | |
7959 | *sizeof_buf += repeat; | |
7960 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7961 | buf = *buf_p; | |
7962 | } | |
7963 | ||
c2d11a7d JM |
7964 | memset (&buf[bc], buf[bc - 1], repeat); |
7965 | bc += repeat; | |
c2c6d25f JM |
7966 | continue; |
7967 | } | |
7968 | ||
c2d11a7d | 7969 | buf[bc] = '\0'; |
6d820c5c | 7970 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7971 | return -1; |
c2c6d25f | 7972 | } |
c906108c | 7973 | default: |
6d820c5c | 7974 | if (bc >= *sizeof_buf - 1) |
c906108c | 7975 | { |
6d820c5c DJ |
7976 | /* Make some more room in the buffer. */ |
7977 | *sizeof_buf *= 2; | |
7978 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7979 | buf = *buf_p; | |
c906108c SS |
7980 | } |
7981 | ||
6d820c5c DJ |
7982 | buf[bc++] = c; |
7983 | csum += c; | |
7984 | continue; | |
c906108c SS |
7985 | } |
7986 | } | |
7987 | } | |
7988 | ||
7989 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7990 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7991 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7992 | rather than timing out; this is used (in synchronous mode) to wait | |
7993 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7994 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7995 | don't have to change all the calls to getpkt to deal with the | |
7996 | return value, because at the moment I don't know what the right | |
23860348 | 7997 | thing to do it for those. */ |
c906108c | 7998 | void |
6d820c5c DJ |
7999 | getpkt (char **buf, |
8000 | long *sizeof_buf, | |
c2d11a7d | 8001 | int forever) |
d9fcf2fb JM |
8002 | { |
8003 | int timed_out; | |
8004 | ||
8005 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8006 | } | |
8007 | ||
8008 | ||
8009 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8010 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8011 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8012 | rather than timing out; this is used (in synchronous mode) to wait | |
8013 | for a target that is is executing user code to stop. If FOREVER == | |
8014 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8015 | indication of this to the caller. Otherwise return the number of |
8016 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8017 | enough reason to return to the caller. *IS_NOTIF is an output |
8018 | boolean that indicates whether *BUF holds a notification or not | |
8019 | (a regular packet). */ | |
74531fed | 8020 | |
3172dc30 | 8021 | static int |
74531fed | 8022 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8023 | int expecting_notif, int *is_notif) |
c906108c | 8024 | { |
2d717e4f | 8025 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8026 | int c; |
8027 | int tries; | |
8028 | int timeout; | |
df4b58fe | 8029 | int val = -1; |
c906108c | 8030 | |
2d717e4f DJ |
8031 | /* We're reading a new response. Make sure we don't look at a |
8032 | previously cached response. */ | |
8033 | rs->cached_wait_status = 0; | |
8034 | ||
6d820c5c | 8035 | strcpy (*buf, "timeout"); |
c906108c SS |
8036 | |
8037 | if (forever) | |
74531fed PA |
8038 | timeout = watchdog > 0 ? watchdog : -1; |
8039 | else if (expecting_notif) | |
8040 | timeout = 0; /* There should already be a char in the buffer. If | |
8041 | not, bail out. */ | |
c906108c SS |
8042 | else |
8043 | timeout = remote_timeout; | |
8044 | ||
8045 | #define MAX_TRIES 3 | |
8046 | ||
74531fed PA |
8047 | /* Process any number of notifications, and then return when |
8048 | we get a packet. */ | |
8049 | for (;;) | |
c906108c | 8050 | { |
d9c43928 | 8051 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8052 | times. */ |
8053 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8054 | { |
74531fed PA |
8055 | /* This can loop forever if the remote side sends us |
8056 | characters continuously, but if it pauses, we'll get | |
8057 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8058 | we'll count that as a retry. | |
8059 | ||
8060 | Note that even when forever is set, we will only wait | |
8061 | forever prior to the start of a packet. After that, we | |
8062 | expect characters to arrive at a brisk pace. They should | |
8063 | show up within remote_timeout intervals. */ | |
8064 | do | |
8065 | c = readchar (timeout); | |
8066 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8067 | |
8068 | if (c == SERIAL_TIMEOUT) | |
8069 | { | |
74531fed PA |
8070 | if (expecting_notif) |
8071 | return -1; /* Don't complain, it's normal to not get | |
8072 | anything in this case. */ | |
8073 | ||
23860348 | 8074 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8075 | { |
2acceee2 | 8076 | QUIT; |
78a095c3 | 8077 | remote_unpush_target (); |
598d3636 JK |
8078 | throw_error (TARGET_CLOSE_ERROR, |
8079 | _("Watchdog timeout has expired. " | |
8080 | "Target detached.")); | |
c906108c | 8081 | } |
c906108c | 8082 | if (remote_debug) |
0f71a2f6 | 8083 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8084 | } |
74531fed PA |
8085 | else |
8086 | { | |
8087 | /* We've found the start of a packet or notification. | |
8088 | Now collect the data. */ | |
8089 | val = read_frame (buf, sizeof_buf); | |
8090 | if (val >= 0) | |
8091 | break; | |
8092 | } | |
8093 | ||
c33e31fd | 8094 | remote_serial_write ("-", 1); |
c906108c | 8095 | } |
c906108c | 8096 | |
74531fed PA |
8097 | if (tries > MAX_TRIES) |
8098 | { | |
8099 | /* We have tried hard enough, and just can't receive the | |
8100 | packet/notification. Give up. */ | |
8101 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8102 | |
74531fed PA |
8103 | /* Skip the ack char if we're in no-ack mode. */ |
8104 | if (!rs->noack_mode) | |
c33e31fd | 8105 | remote_serial_write ("+", 1); |
74531fed PA |
8106 | return -1; |
8107 | } | |
c906108c | 8108 | |
74531fed PA |
8109 | /* If we got an ordinary packet, return that to our caller. */ |
8110 | if (c == '$') | |
c906108c SS |
8111 | { |
8112 | if (remote_debug) | |
43e526b9 | 8113 | { |
6e5abd65 PA |
8114 | struct cleanup *old_chain; |
8115 | char *str; | |
8116 | ||
8117 | str = escape_buffer (*buf, val); | |
8118 | old_chain = make_cleanup (xfree, str); | |
8119 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8120 | do_cleanups (old_chain); | |
43e526b9 | 8121 | } |
a6f3e723 SL |
8122 | |
8123 | /* Skip the ack char if we're in no-ack mode. */ | |
8124 | if (!rs->noack_mode) | |
c33e31fd | 8125 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8126 | if (is_notif != NULL) |
8127 | *is_notif = 0; | |
0876f84a | 8128 | return val; |
c906108c SS |
8129 | } |
8130 | ||
74531fed PA |
8131 | /* If we got a notification, handle it, and go back to looking |
8132 | for a packet. */ | |
8133 | else | |
8134 | { | |
8135 | gdb_assert (c == '%'); | |
8136 | ||
8137 | if (remote_debug) | |
8138 | { | |
6e5abd65 PA |
8139 | struct cleanup *old_chain; |
8140 | char *str; | |
8141 | ||
8142 | str = escape_buffer (*buf, val); | |
8143 | old_chain = make_cleanup (xfree, str); | |
8144 | fprintf_unfiltered (gdb_stdlog, | |
8145 | " Notification received: %s\n", | |
8146 | str); | |
8147 | do_cleanups (old_chain); | |
74531fed | 8148 | } |
fee9eda9 YQ |
8149 | if (is_notif != NULL) |
8150 | *is_notif = 1; | |
c906108c | 8151 | |
5965e028 | 8152 | handle_notification (rs->notif_state, *buf); |
c906108c | 8153 | |
74531fed | 8154 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8155 | |
74531fed | 8156 | if (expecting_notif) |
fee9eda9 | 8157 | return val; |
74531fed PA |
8158 | } |
8159 | } | |
8160 | } | |
8161 | ||
8162 | static int | |
8163 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8164 | { | |
fee9eda9 | 8165 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8166 | } |
8167 | ||
8168 | static int | |
fee9eda9 YQ |
8169 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8170 | int *is_notif) | |
74531fed | 8171 | { |
fee9eda9 YQ |
8172 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8173 | is_notif); | |
c906108c | 8174 | } |
74531fed | 8175 | |
cbb8991c DB |
8176 | /* Check whether EVENT is a fork event for the process specified |
8177 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8178 | ||
8179 | static int | |
8180 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8181 | QUEUE_ITER (stop_reply_p) *iter, | |
8182 | stop_reply_p event, | |
8183 | void *data) | |
8184 | { | |
8185 | struct queue_iter_param *param = data; | |
8186 | int parent_pid = *(int *) param->input; | |
8187 | ||
8188 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8189 | { | |
8190 | struct remote_state *rs = get_remote_state (); | |
8191 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8192 | int res; | |
8193 | ||
8194 | res = remote_vkill (child_pid, rs); | |
8195 | if (res != 0) | |
8196 | error (_("Can't kill fork child process %d"), child_pid); | |
8197 | } | |
8198 | ||
8199 | return 1; | |
8200 | } | |
8201 | ||
8202 | /* Kill any new fork children of process PID that haven't been | |
8203 | processed by follow_fork. */ | |
8204 | ||
8205 | static void | |
8206 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8207 | { | |
8208 | struct thread_info *thread; | |
8209 | struct notif_client *notif = ¬if_client_stop; | |
8210 | struct queue_iter_param param; | |
8211 | ||
8212 | /* Kill the fork child threads of any threads in process PID | |
8213 | that are stopped at a fork event. */ | |
8214 | ALL_NON_EXITED_THREADS (thread) | |
8215 | { | |
8216 | struct target_waitstatus *ws = &thread->pending_follow; | |
8217 | ||
8218 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8219 | { | |
8220 | struct remote_state *rs = get_remote_state (); | |
8221 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8222 | int res; | |
8223 | ||
8224 | res = remote_vkill (child_pid, rs); | |
8225 | if (res != 0) | |
8226 | error (_("Can't kill fork child process %d"), child_pid); | |
8227 | } | |
8228 | } | |
8229 | ||
8230 | /* Check for any pending fork events (not reported or processed yet) | |
8231 | in process PID and kill those fork child threads as well. */ | |
8232 | remote_notif_get_pending_events (notif); | |
8233 | param.input = &pid; | |
8234 | param.output = NULL; | |
8235 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8236 | kill_child_of_pending_fork, ¶m); | |
8237 | } | |
8238 | ||
c906108c SS |
8239 | \f |
8240 | static void | |
7d85a9c0 | 8241 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8242 | { |
0fdf84ca PA |
8243 | |
8244 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8245 | aren't on speaking terms with the remote system. */ |
492d29ea | 8246 | TRY |
0fdf84ca PA |
8247 | { |
8248 | putpkt ("k"); | |
8249 | } | |
492d29ea | 8250 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8251 | { |
8252 | if (ex.error == TARGET_CLOSE_ERROR) | |
8253 | { | |
8254 | /* If we got an (EOF) error that caused the target | |
8255 | to go away, then we're done, that's what we wanted. | |
8256 | "k" is susceptible to cause a premature EOF, given | |
8257 | that the remote server isn't actually required to | |
8258 | reply to "k", and it can happen that it doesn't | |
8259 | even get to reply ACK to the "k". */ | |
8260 | return; | |
8261 | } | |
8262 | ||
8263 | /* Otherwise, something went wrong. We didn't actually kill | |
8264 | the target. Just propagate the exception, and let the | |
8265 | user or higher layers decide what to do. */ | |
8266 | throw_exception (ex); | |
8267 | } | |
492d29ea | 8268 | END_CATCH |
43ff13b4 | 8269 | |
0fdf84ca PA |
8270 | /* We've killed the remote end, we get to mourn it. Since this is |
8271 | target remote, single-process, mourning the inferior also | |
8272 | unpushes remote_ops. */ | |
43ff13b4 JM |
8273 | target_mourn_inferior (); |
8274 | } | |
8275 | ||
82f73884 PA |
8276 | static int |
8277 | remote_vkill (int pid, struct remote_state *rs) | |
8278 | { | |
4082afcc | 8279 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8280 | return -1; |
8281 | ||
8282 | /* Tell the remote target to detach. */ | |
bba74b36 | 8283 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8284 | putpkt (rs->buf); |
8285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8286 | ||
4082afcc PA |
8287 | switch (packet_ok (rs->buf, |
8288 | &remote_protocol_packets[PACKET_vKill])) | |
8289 | { | |
8290 | case PACKET_OK: | |
8291 | return 0; | |
8292 | case PACKET_ERROR: | |
8293 | return 1; | |
8294 | case PACKET_UNKNOWN: | |
8295 | return -1; | |
8296 | default: | |
8297 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8298 | } | |
82f73884 PA |
8299 | } |
8300 | ||
8301 | static void | |
7d85a9c0 | 8302 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8303 | { |
8304 | int res; | |
8305 | int pid = ptid_get_pid (inferior_ptid); | |
8306 | struct remote_state *rs = get_remote_state (); | |
8307 | ||
cbb8991c DB |
8308 | /* If we're stopped while forking and we haven't followed yet, kill the |
8309 | child task. We need to do this before killing the parent task | |
8310 | because if this is a vfork then the parent will be sleeping. */ | |
8311 | kill_new_fork_children (pid, rs); | |
8312 | ||
82f73884 | 8313 | res = remote_vkill (pid, rs); |
901f9912 | 8314 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8315 | { |
8316 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8317 | to specify the pid. */ | |
8318 | ||
8319 | putpkt ("k"); | |
8320 | #if 0 | |
8321 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8322 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8323 | res = 1; | |
8324 | #else | |
8325 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8326 | we do or not. For the existing stubs, kill is a noop. */ | |
8327 | res = 0; | |
8328 | #endif | |
8329 | } | |
8330 | ||
8331 | if (res != 0) | |
8332 | error (_("Can't kill process")); | |
8333 | ||
82f73884 PA |
8334 | target_mourn_inferior (); |
8335 | } | |
8336 | ||
c906108c | 8337 | static void |
20f796c9 | 8338 | remote_mourn (struct target_ops *target) |
c906108c SS |
8339 | { |
8340 | unpush_target (target); | |
ce5ce7ed | 8341 | |
8a2492ee PA |
8342 | /* remote_close takes care of doing most of the clean up. */ |
8343 | generic_mourn_inferior (); | |
c906108c SS |
8344 | } |
8345 | ||
2d717e4f | 8346 | static void |
20f796c9 | 8347 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8348 | { |
8349 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8350 | |
e24a49d8 PA |
8351 | /* In case we got here due to an error, but we're going to stay |
8352 | connected. */ | |
8353 | rs->waiting_for_stop_reply = 0; | |
8354 | ||
dc1981d7 PA |
8355 | /* If the current general thread belonged to the process we just |
8356 | detached from or has exited, the remote side current general | |
8357 | thread becomes undefined. Considering a case like this: | |
8358 | ||
8359 | - We just got here due to a detach. | |
8360 | - The process that we're detaching from happens to immediately | |
8361 | report a global breakpoint being hit in non-stop mode, in the | |
8362 | same thread we had selected before. | |
8363 | - GDB attaches to this process again. | |
8364 | - This event happens to be the next event we handle. | |
8365 | ||
8366 | GDB would consider that the current general thread didn't need to | |
8367 | be set on the stub side (with Hg), since for all it knew, | |
8368 | GENERAL_THREAD hadn't changed. | |
8369 | ||
8370 | Notice that although in all-stop mode, the remote server always | |
8371 | sets the current thread to the thread reporting the stop event, | |
8372 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8373 | not* change the current thread when reporting a breakpoint hit, | |
8374 | due to the decoupling of event reporting and event handling. | |
8375 | ||
8376 | To keep things simple, we always invalidate our notion of the | |
8377 | current thread. */ | |
47f8a51d | 8378 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8379 | |
2d717e4f DJ |
8380 | /* Unlike "target remote", we do not want to unpush the target; then |
8381 | the next time the user says "run", we won't be connected. */ | |
8382 | ||
48aa3c27 PA |
8383 | /* Call common code to mark the inferior as not running. */ |
8384 | generic_mourn_inferior (); | |
8385 | ||
d729566a | 8386 | if (!have_inferiors ()) |
2d717e4f | 8387 | { |
82f73884 PA |
8388 | if (!remote_multi_process_p (rs)) |
8389 | { | |
8390 | /* Check whether the target is running now - some remote stubs | |
8391 | automatically restart after kill. */ | |
8392 | putpkt ("?"); | |
8393 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8394 | ||
8395 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8396 | { | |
3e43a32a MS |
8397 | /* Assume that the target has been restarted. Set |
8398 | inferior_ptid so that bits of core GDB realizes | |
8399 | there's something here, e.g., so that the user can | |
8400 | say "kill" again. */ | |
82f73884 PA |
8401 | inferior_ptid = magic_null_ptid; |
8402 | } | |
82f73884 | 8403 | } |
2d717e4f DJ |
8404 | } |
8405 | } | |
c906108c | 8406 | |
03583c20 | 8407 | static int |
2bfc0540 | 8408 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8409 | { |
4082afcc | 8410 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8411 | } |
8412 | ||
8413 | static void | |
8414 | extended_remote_disable_randomization (int val) | |
8415 | { | |
8416 | struct remote_state *rs = get_remote_state (); | |
8417 | char *reply; | |
8418 | ||
bba74b36 YQ |
8419 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8420 | val); | |
03583c20 UW |
8421 | putpkt (rs->buf); |
8422 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8423 | if (*reply == '\0') | |
8424 | error (_("Target does not support QDisableRandomization.")); | |
8425 | if (strcmp (reply, "OK") != 0) | |
8426 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8427 | } | |
8428 | ||
2d717e4f DJ |
8429 | static int |
8430 | extended_remote_run (char *args) | |
8431 | { | |
8432 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8433 | int len; |
c906108c | 8434 | |
2d717e4f DJ |
8435 | /* If the user has disabled vRun support, or we have detected that |
8436 | support is not available, do not try it. */ | |
4082afcc | 8437 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8438 | return -1; |
424163ea | 8439 | |
2d717e4f DJ |
8440 | strcpy (rs->buf, "vRun;"); |
8441 | len = strlen (rs->buf); | |
c906108c | 8442 | |
2d717e4f DJ |
8443 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8444 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8445 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8446 | strlen (remote_exec_file)); | |
2d717e4f | 8447 | |
d1a41061 | 8448 | gdb_assert (args != NULL); |
2d717e4f DJ |
8449 | if (*args) |
8450 | { | |
8451 | struct cleanup *back_to; | |
8452 | int i; | |
8453 | char **argv; | |
8454 | ||
d1a41061 | 8455 | argv = gdb_buildargv (args); |
6e366df1 | 8456 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8457 | for (i = 0; argv[i] != NULL; i++) |
8458 | { | |
8459 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8460 | error (_("Argument list too long for run packet")); | |
8461 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8462 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8463 | strlen (argv[i])); | |
2d717e4f DJ |
8464 | } |
8465 | do_cleanups (back_to); | |
8466 | } | |
8467 | ||
8468 | rs->buf[len++] = '\0'; | |
8469 | ||
8470 | putpkt (rs->buf); | |
8471 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8472 | ||
4082afcc | 8473 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8474 | { |
4082afcc | 8475 | case PACKET_OK: |
3405876a | 8476 | /* We have a wait response. All is well. */ |
2d717e4f | 8477 | return 0; |
4082afcc PA |
8478 | case PACKET_UNKNOWN: |
8479 | return -1; | |
8480 | case PACKET_ERROR: | |
2d717e4f DJ |
8481 | if (remote_exec_file[0] == '\0') |
8482 | error (_("Running the default executable on the remote target failed; " | |
8483 | "try \"set remote exec-file\"?")); | |
8484 | else | |
8485 | error (_("Running \"%s\" on the remote target failed"), | |
8486 | remote_exec_file); | |
4082afcc PA |
8487 | default: |
8488 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8489 | } |
c906108c SS |
8490 | } |
8491 | ||
2d717e4f DJ |
8492 | /* In the extended protocol we want to be able to do things like |
8493 | "run" and have them basically work as expected. So we need | |
8494 | a special create_inferior function. We support changing the | |
8495 | executable file and the command line arguments, but not the | |
8496 | environment. */ | |
8497 | ||
43ff13b4 | 8498 | static void |
77a19445 TT |
8499 | extended_remote_create_inferior (struct target_ops *ops, |
8500 | char *exec_file, char *args, | |
8501 | char **env, int from_tty) | |
43ff13b4 | 8502 | { |
3405876a PA |
8503 | int run_worked; |
8504 | char *stop_reply; | |
8505 | struct remote_state *rs = get_remote_state (); | |
8506 | ||
43ff13b4 | 8507 | /* If running asynchronously, register the target file descriptor |
23860348 | 8508 | with the event loop. */ |
75c99385 | 8509 | if (target_can_async_p ()) |
6a3753b3 | 8510 | target_async (1); |
43ff13b4 | 8511 | |
03583c20 | 8512 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8513 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8514 | extended_remote_disable_randomization (disable_randomization); |
8515 | ||
43ff13b4 | 8516 | /* Now restart the remote server. */ |
3405876a PA |
8517 | run_worked = extended_remote_run (args) != -1; |
8518 | if (!run_worked) | |
2d717e4f DJ |
8519 | { |
8520 | /* vRun was not supported. Fail if we need it to do what the | |
8521 | user requested. */ | |
8522 | if (remote_exec_file[0]) | |
8523 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8524 | if (args[0]) | |
8525 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8526 | |
2d717e4f DJ |
8527 | /* Fall back to "R". */ |
8528 | extended_remote_restart (); | |
8529 | } | |
424163ea | 8530 | |
6c95b8df PA |
8531 | if (!have_inferiors ()) |
8532 | { | |
8533 | /* Clean up from the last time we ran, before we mark the target | |
8534 | running again. This will mark breakpoints uninserted, and | |
8535 | get_offsets may insert breakpoints. */ | |
8536 | init_thread_list (); | |
8537 | init_wait_for_inferior (); | |
8538 | } | |
45280a52 | 8539 | |
3405876a PA |
8540 | /* vRun's success return is a stop reply. */ |
8541 | stop_reply = run_worked ? rs->buf : NULL; | |
8542 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8543 | |
2d717e4f DJ |
8544 | /* Get updated offsets, if the stub uses qOffsets. */ |
8545 | get_offsets (); | |
2d717e4f | 8546 | } |
c906108c | 8547 | \f |
c5aa993b | 8548 | |
b775012e LM |
8549 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8550 | the list of conditions (in agent expression bytecode format), if any, the | |
8551 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8552 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8553 | |
8554 | static int | |
8555 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8556 | struct bp_target_info *bp_tgt, char *buf, |
8557 | char *buf_end) | |
b775012e LM |
8558 | { |
8559 | struct agent_expr *aexpr = NULL; | |
8560 | int i, ix; | |
8561 | char *pkt; | |
8562 | char *buf_start = buf; | |
8563 | ||
8564 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8565 | return 0; | |
8566 | ||
8567 | buf += strlen (buf); | |
bba74b36 | 8568 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8569 | buf++; |
8570 | ||
8571 | /* Send conditions to the target and free the vector. */ | |
8572 | for (ix = 0; | |
8573 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8574 | ix++) | |
8575 | { | |
bba74b36 | 8576 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8577 | buf += strlen (buf); |
8578 | for (i = 0; i < aexpr->len; ++i) | |
8579 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8580 | *buf = '\0'; | |
8581 | } | |
b775012e LM |
8582 | return 0; |
8583 | } | |
8584 | ||
d3ce09f5 SS |
8585 | static void |
8586 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8587 | struct bp_target_info *bp_tgt, char *buf) | |
8588 | { | |
8589 | struct agent_expr *aexpr = NULL; | |
8590 | int i, ix; | |
8591 | ||
8592 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8593 | return; | |
8594 | ||
8595 | buf += strlen (buf); | |
8596 | ||
8597 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8598 | buf += strlen (buf); | |
8599 | ||
8600 | /* Concatenate all the agent expressions that are commands into the | |
8601 | cmds parameter. */ | |
8602 | for (ix = 0; | |
8603 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8604 | ix++) | |
8605 | { | |
8606 | sprintf (buf, "X%x,", aexpr->len); | |
8607 | buf += strlen (buf); | |
8608 | for (i = 0; i < aexpr->len; ++i) | |
8609 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8610 | *buf = '\0'; | |
8611 | } | |
d3ce09f5 SS |
8612 | } |
8613 | ||
8181d85f DJ |
8614 | /* Insert a breakpoint. On targets that have software breakpoint |
8615 | support, we ask the remote target to do the work; on targets | |
8616 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8617 | |
8618 | static int | |
3db08215 MM |
8619 | remote_insert_breakpoint (struct target_ops *ops, |
8620 | struct gdbarch *gdbarch, | |
a6d9a66e | 8621 | struct bp_target_info *bp_tgt) |
c906108c | 8622 | { |
d471ea57 AC |
8623 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8624 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8625 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8626 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8627 | |
4082afcc | 8628 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8629 | { |
0d5ed153 | 8630 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8631 | struct remote_state *rs; |
bba74b36 | 8632 | char *p, *endbuf; |
7c0f6dcc | 8633 | int bpsize; |
b775012e | 8634 | struct condition_list *cond = NULL; |
4fff2411 | 8635 | |
28439a30 PA |
8636 | /* Make sure the remote is pointing at the right process, if |
8637 | necessary. */ | |
8638 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8639 | set_general_process (); | |
8640 | ||
a1dcb23a | 8641 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8642 | |
8643 | rs = get_remote_state (); | |
8644 | p = rs->buf; | |
bba74b36 | 8645 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8646 | |
96baa820 JM |
8647 | *(p++) = 'Z'; |
8648 | *(p++) = '0'; | |
8649 | *(p++) = ','; | |
7c0f6dcc | 8650 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8651 | p += hexnumstr (p, addr); |
bba74b36 | 8652 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8653 | |
efcc2da7 | 8654 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8655 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8656 | |
78eff0ec | 8657 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8658 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8659 | ||
6d820c5c DJ |
8660 | putpkt (rs->buf); |
8661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8662 | |
6d820c5c | 8663 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8664 | { |
d471ea57 AC |
8665 | case PACKET_ERROR: |
8666 | return -1; | |
8667 | case PACKET_OK: | |
7c0f6dcc JL |
8668 | bp_tgt->placed_address = addr; |
8669 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8670 | return 0; |
8671 | case PACKET_UNKNOWN: | |
8672 | break; | |
96baa820 JM |
8673 | } |
8674 | } | |
c906108c | 8675 | |
0000e5cc PA |
8676 | /* If this breakpoint has target-side commands but this stub doesn't |
8677 | support Z0 packets, throw error. */ | |
8678 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8679 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8680 | Target doesn't support breakpoints that have target side commands.")); | |
8681 | ||
3db08215 | 8682 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8683 | } |
8684 | ||
8685 | static int | |
3db08215 MM |
8686 | remote_remove_breakpoint (struct target_ops *ops, |
8687 | struct gdbarch *gdbarch, | |
a6d9a66e | 8688 | struct bp_target_info *bp_tgt) |
c906108c | 8689 | { |
8181d85f | 8690 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8691 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8692 | |
4082afcc | 8693 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8694 | { |
6d820c5c | 8695 | char *p = rs->buf; |
bba74b36 | 8696 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8697 | |
28439a30 PA |
8698 | /* Make sure the remote is pointing at the right process, if |
8699 | necessary. */ | |
8700 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8701 | set_general_process (); | |
8702 | ||
96baa820 JM |
8703 | *(p++) = 'z'; |
8704 | *(p++) = '0'; | |
8705 | *(p++) = ','; | |
8706 | ||
8181d85f DJ |
8707 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8708 | p += hexnumstr (p, addr); | |
bba74b36 | 8709 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8710 | |
6d820c5c DJ |
8711 | putpkt (rs->buf); |
8712 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8713 | |
6d820c5c | 8714 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8715 | } |
8716 | ||
3db08215 | 8717 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8718 | } |
8719 | ||
f486487f | 8720 | static enum Z_packet_type |
d471ea57 AC |
8721 | watchpoint_to_Z_packet (int type) |
8722 | { | |
8723 | switch (type) | |
8724 | { | |
8725 | case hw_write: | |
bb858e6a | 8726 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8727 | break; |
8728 | case hw_read: | |
bb858e6a | 8729 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8730 | break; |
8731 | case hw_access: | |
bb858e6a | 8732 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8733 | break; |
8734 | default: | |
8e65ff28 | 8735 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8736 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8737 | } |
8738 | } | |
8739 | ||
3c3bea1c | 8740 | static int |
f486487f SM |
8741 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8742 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8743 | { |
d01949b6 | 8744 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8745 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8746 | char *p; |
d471ea57 | 8747 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8748 | |
4082afcc | 8749 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8750 | return 1; |
802188a7 | 8751 | |
28439a30 PA |
8752 | /* Make sure the remote is pointing at the right process, if |
8753 | necessary. */ | |
8754 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8755 | set_general_process (); | |
8756 | ||
bba74b36 | 8757 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8758 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8759 | addr = remote_address_masked (addr); |
8760 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8761 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8762 | |
6d820c5c DJ |
8763 | putpkt (rs->buf); |
8764 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8765 | |
6d820c5c | 8766 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8767 | { |
8768 | case PACKET_ERROR: | |
d471ea57 | 8769 | return -1; |
85d721b8 PA |
8770 | case PACKET_UNKNOWN: |
8771 | return 1; | |
d471ea57 AC |
8772 | case PACKET_OK: |
8773 | return 0; | |
8774 | } | |
8e65ff28 | 8775 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8776 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8777 | } |
8778 | ||
283002cf MR |
8779 | static int |
8780 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8781 | CORE_ADDR start, int length) | |
8782 | { | |
8783 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8784 | ||
8785 | return diff < length; | |
8786 | } | |
8787 | ||
d471ea57 | 8788 | |
3c3bea1c | 8789 | static int |
f486487f SM |
8790 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8791 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8792 | { |
d01949b6 | 8793 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8794 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8795 | char *p; |
d471ea57 AC |
8796 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8797 | ||
4082afcc | 8798 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8799 | return -1; |
802188a7 | 8800 | |
28439a30 PA |
8801 | /* Make sure the remote is pointing at the right process, if |
8802 | necessary. */ | |
8803 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8804 | set_general_process (); | |
8805 | ||
bba74b36 | 8806 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8807 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8808 | addr = remote_address_masked (addr); |
8809 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8810 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8811 | putpkt (rs->buf); |
8812 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8813 | |
6d820c5c | 8814 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8815 | { |
8816 | case PACKET_ERROR: | |
8817 | case PACKET_UNKNOWN: | |
8818 | return -1; | |
8819 | case PACKET_OK: | |
8820 | return 0; | |
8821 | } | |
8e65ff28 | 8822 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8823 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8824 | } |
8825 | ||
3c3bea1c | 8826 | |
501eef12 | 8827 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8828 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8829 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8830 | |
480a3f21 | 8831 | static int |
31568a15 TT |
8832 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8833 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8834 | { |
8835 | if (remote_hw_watchpoint_length_limit == 0) | |
8836 | return 0; | |
8837 | else if (remote_hw_watchpoint_length_limit < 0) | |
8838 | return 1; | |
8839 | else if (len <= remote_hw_watchpoint_length_limit) | |
8840 | return 1; | |
8841 | else | |
8842 | return 0; | |
8843 | } | |
8844 | ||
b9362cc7 | 8845 | static int |
5461485a | 8846 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 8847 | enum bptype type, int cnt, int ot) |
96baa820 | 8848 | { |
3c3bea1c GS |
8849 | if (type == bp_hardware_breakpoint) |
8850 | { | |
8851 | if (remote_hw_breakpoint_limit == 0) | |
8852 | return 0; | |
501eef12 AC |
8853 | else if (remote_hw_breakpoint_limit < 0) |
8854 | return 1; | |
3c3bea1c GS |
8855 | else if (cnt <= remote_hw_breakpoint_limit) |
8856 | return 1; | |
8857 | } | |
8858 | else | |
8859 | { | |
8860 | if (remote_hw_watchpoint_limit == 0) | |
8861 | return 0; | |
501eef12 AC |
8862 | else if (remote_hw_watchpoint_limit < 0) |
8863 | return 1; | |
3c3bea1c GS |
8864 | else if (ot) |
8865 | return -1; | |
8866 | else if (cnt <= remote_hw_watchpoint_limit) | |
8867 | return 1; | |
8868 | } | |
8869 | return -1; | |
8870 | } | |
8871 | ||
f7e6eed5 PA |
8872 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
8873 | ||
8874 | static int | |
8875 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8876 | { | |
8877 | struct remote_state *rs = get_remote_state (); | |
8878 | ||
8879 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
8880 | } | |
8881 | ||
8882 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
8883 | remote. */ | |
8884 | ||
8885 | static int | |
8886 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8887 | { | |
8888 | struct remote_state *rs = get_remote_state (); | |
8889 | ||
8890 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
8891 | } | |
8892 | ||
8893 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
8894 | ||
8895 | static int | |
8896 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8897 | { | |
8898 | struct remote_state *rs = get_remote_state (); | |
8899 | ||
8900 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
8901 | } | |
8902 | ||
8903 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
8904 | remote. */ | |
8905 | ||
8906 | static int | |
8907 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8908 | { | |
8909 | struct remote_state *rs = get_remote_state (); | |
8910 | ||
8911 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
8912 | } | |
8913 | ||
b9362cc7 | 8914 | static int |
6a109b6b | 8915 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8916 | { |
ee154bee TT |
8917 | struct remote_state *rs = get_remote_state (); |
8918 | ||
f7e6eed5 | 8919 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
8920 | } |
8921 | ||
4aa7a7f5 JJ |
8922 | static int |
8923 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8924 | { |
ee154bee | 8925 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8926 | int rc = 0; |
a744cf53 | 8927 | |
6a109b6b | 8928 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8929 | { |
ee154bee | 8930 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8931 | rc = 1; |
8932 | } | |
8933 | ||
8934 | return rc; | |
3c3bea1c GS |
8935 | } |
8936 | ||
8937 | ||
8938 | static int | |
23a26771 | 8939 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8940 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8941 | { |
0d5ed153 | 8942 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8943 | struct remote_state *rs; |
bba74b36 | 8944 | char *p, *endbuf; |
dd61ec5c | 8945 | char *message; |
0d5ed153 | 8946 | int bpsize; |
802188a7 | 8947 | |
c8189ed1 | 8948 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8949 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8950 | |
0d5ed153 | 8951 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 8952 | |
4082afcc | 8953 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8954 | return -1; |
2bc416ba | 8955 | |
28439a30 PA |
8956 | /* Make sure the remote is pointing at the right process, if |
8957 | necessary. */ | |
8958 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8959 | set_general_process (); | |
8960 | ||
4fff2411 JZ |
8961 | rs = get_remote_state (); |
8962 | p = rs->buf; | |
bba74b36 | 8963 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8964 | |
96baa820 JM |
8965 | *(p++) = 'Z'; |
8966 | *(p++) = '1'; | |
8967 | *(p++) = ','; | |
802188a7 | 8968 | |
0d5ed153 | 8969 | addr = remote_address_masked (addr); |
96baa820 | 8970 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 8971 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 8972 | |
efcc2da7 | 8973 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 8974 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8975 | |
78eff0ec | 8976 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
8977 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8978 | ||
6d820c5c DJ |
8979 | putpkt (rs->buf); |
8980 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8981 | |
6d820c5c | 8982 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8983 | { |
8984 | case PACKET_ERROR: | |
dd61ec5c MW |
8985 | if (rs->buf[1] == '.') |
8986 | { | |
8987 | message = strchr (rs->buf + 2, '.'); | |
8988 | if (message) | |
0316657e | 8989 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8990 | } |
8991 | return -1; | |
d471ea57 AC |
8992 | case PACKET_UNKNOWN: |
8993 | return -1; | |
8994 | case PACKET_OK: | |
0d5ed153 MR |
8995 | bp_tgt->placed_address = addr; |
8996 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8997 | return 0; |
8998 | } | |
8e65ff28 | 8999 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9000 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9001 | } |
9002 | ||
d471ea57 | 9003 | |
802188a7 | 9004 | static int |
a64dc96c | 9005 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9006 | struct bp_target_info *bp_tgt) |
96baa820 | 9007 | { |
8181d85f | 9008 | CORE_ADDR addr; |
d01949b6 | 9009 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9010 | char *p = rs->buf; |
bba74b36 | 9011 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9012 | |
4082afcc | 9013 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9014 | return -1; |
802188a7 | 9015 | |
28439a30 PA |
9016 | /* Make sure the remote is pointing at the right process, if |
9017 | necessary. */ | |
9018 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9019 | set_general_process (); | |
9020 | ||
96baa820 JM |
9021 | *(p++) = 'z'; |
9022 | *(p++) = '1'; | |
9023 | *(p++) = ','; | |
802188a7 | 9024 | |
8181d85f | 9025 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9026 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9027 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9028 | |
6d820c5c DJ |
9029 | putpkt (rs->buf); |
9030 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9031 | |
6d820c5c | 9032 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9033 | { |
9034 | case PACKET_ERROR: | |
9035 | case PACKET_UNKNOWN: | |
9036 | return -1; | |
9037 | case PACKET_OK: | |
9038 | return 0; | |
9039 | } | |
8e65ff28 | 9040 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9041 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9042 | } |
96baa820 | 9043 | |
4a5e7a5b PA |
9044 | /* Verify memory using the "qCRC:" request. */ |
9045 | ||
9046 | static int | |
9047 | remote_verify_memory (struct target_ops *ops, | |
9048 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9049 | { | |
9050 | struct remote_state *rs = get_remote_state (); | |
9051 | unsigned long host_crc, target_crc; | |
9052 | char *tmp; | |
9053 | ||
936d2992 PA |
9054 | /* It doesn't make sense to use qCRC if the remote target is |
9055 | connected but not running. */ | |
9056 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9057 | { | |
9058 | enum packet_result result; | |
28439a30 | 9059 | |
936d2992 PA |
9060 | /* Make sure the remote is pointing at the right process. */ |
9061 | set_general_process (); | |
4a5e7a5b | 9062 | |
936d2992 PA |
9063 | /* FIXME: assumes lma can fit into long. */ |
9064 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9065 | (long) lma, (long) size); | |
9066 | putpkt (rs->buf); | |
4a5e7a5b | 9067 | |
936d2992 PA |
9068 | /* Be clever; compute the host_crc before waiting for target |
9069 | reply. */ | |
9070 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9071 | ||
9072 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9073 | |
936d2992 PA |
9074 | result = packet_ok (rs->buf, |
9075 | &remote_protocol_packets[PACKET_qCRC]); | |
9076 | if (result == PACKET_ERROR) | |
9077 | return -1; | |
9078 | else if (result == PACKET_OK) | |
9079 | { | |
9080 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9081 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9082 | |
936d2992 PA |
9083 | return (host_crc == target_crc); |
9084 | } | |
9085 | } | |
4a5e7a5b | 9086 | |
936d2992 | 9087 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9088 | } |
9089 | ||
c906108c SS |
9090 | /* compare-sections command |
9091 | ||
9092 | With no arguments, compares each loadable section in the exec bfd | |
9093 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9094 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9095 | |
c906108c | 9096 | static void |
fba45db2 | 9097 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9098 | { |
9099 | asection *s; | |
c906108c | 9100 | struct cleanup *old_chain; |
948f8e3d | 9101 | gdb_byte *sectdata; |
ce359b09 | 9102 | const char *sectname; |
c906108c SS |
9103 | bfd_size_type size; |
9104 | bfd_vma lma; | |
9105 | int matched = 0; | |
9106 | int mismatched = 0; | |
4a5e7a5b | 9107 | int res; |
95cf3b38 | 9108 | int read_only = 0; |
c906108c SS |
9109 | |
9110 | if (!exec_bfd) | |
8a3fe4f8 | 9111 | error (_("command cannot be used without an exec file")); |
c906108c | 9112 | |
28439a30 PA |
9113 | /* Make sure the remote is pointing at the right process. */ |
9114 | set_general_process (); | |
9115 | ||
95cf3b38 DT |
9116 | if (args != NULL && strcmp (args, "-r") == 0) |
9117 | { | |
9118 | read_only = 1; | |
9119 | args = NULL; | |
9120 | } | |
9121 | ||
c5aa993b | 9122 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9123 | { |
9124 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9125 | continue; /* Skip non-loadable section. */ |
c906108c | 9126 | |
95cf3b38 DT |
9127 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9128 | continue; /* Skip writeable sections */ | |
9129 | ||
2c500098 | 9130 | size = bfd_get_section_size (s); |
c906108c | 9131 | if (size == 0) |
0df8b418 | 9132 | continue; /* Skip zero-length section. */ |
c906108c | 9133 | |
ce359b09 | 9134 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9135 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9136 | continue; /* Not the section selected by user. */ |
c906108c | 9137 | |
0df8b418 | 9138 | matched = 1; /* Do this section. */ |
c906108c | 9139 | lma = s->lma; |
c906108c | 9140 | |
c906108c | 9141 | sectdata = xmalloc (size); |
b8c9b27d | 9142 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9143 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9144 | |
4a5e7a5b PA |
9145 | res = target_verify_memory (sectdata, lma, size); |
9146 | ||
9147 | if (res == -1) | |
5af949e3 | 9148 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9149 | paddress (target_gdbarch (), lma), |
9150 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9151 | |
5af949e3 | 9152 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9153 | paddress (target_gdbarch (), lma), |
9154 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9155 | if (res) |
c906108c SS |
9156 | printf_filtered ("matched.\n"); |
9157 | else | |
c5aa993b JM |
9158 | { |
9159 | printf_filtered ("MIS-MATCHED!\n"); | |
9160 | mismatched++; | |
9161 | } | |
c906108c SS |
9162 | |
9163 | do_cleanups (old_chain); | |
9164 | } | |
9165 | if (mismatched > 0) | |
936d2992 | 9166 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9167 | the loaded file\n")); |
c906108c | 9168 | if (args && !matched) |
a3f17187 | 9169 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9170 | } |
9171 | ||
0e7f50da UW |
9172 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9173 | into remote target. The number of bytes written to the remote | |
9174 | target is returned, or -1 for error. */ | |
9175 | ||
9b409511 | 9176 | static enum target_xfer_status |
0e7f50da UW |
9177 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9178 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9179 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9180 | struct packet_config *packet) |
9181 | { | |
9182 | int i, buf_len; | |
9183 | ULONGEST n; | |
0e7f50da UW |
9184 | struct remote_state *rs = get_remote_state (); |
9185 | int max_size = get_memory_write_packet_size (); | |
9186 | ||
9187 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9188 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9189 | |
9190 | /* Insert header. */ | |
9191 | i = snprintf (rs->buf, max_size, | |
9192 | "qXfer:%s:write:%s:%s:", | |
9193 | object_name, annex ? annex : "", | |
9194 | phex_nz (offset, sizeof offset)); | |
9195 | max_size -= (i + 1); | |
9196 | ||
9197 | /* Escape as much data as fits into rs->buf. */ | |
9198 | buf_len = remote_escape_output | |
124e13d9 | 9199 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9200 | |
9201 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9202 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9203 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9204 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9205 | |
9206 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9207 | |
9208 | *xfered_len = n; | |
9209 | return TARGET_XFER_OK; | |
0e7f50da UW |
9210 | } |
9211 | ||
0876f84a DJ |
9212 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9213 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9214 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9215 | The number of bytes read may be less than LEN without indicating an | |
9216 | EOF. PACKET is checked and updated to indicate whether the remote | |
9217 | target supports this object. */ | |
9218 | ||
9b409511 | 9219 | static enum target_xfer_status |
0876f84a DJ |
9220 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9221 | const char *annex, | |
9222 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9223 | ULONGEST *xfered_len, |
0876f84a DJ |
9224 | struct packet_config *packet) |
9225 | { | |
0876f84a | 9226 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9227 | LONGEST i, n, packet_len; |
9228 | ||
9229 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9230 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9231 | |
9232 | /* Check whether we've cached an end-of-object packet that matches | |
9233 | this request. */ | |
8e88304f | 9234 | if (rs->finished_object) |
0876f84a | 9235 | { |
8e88304f TT |
9236 | if (strcmp (object_name, rs->finished_object) == 0 |
9237 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9238 | && offset == rs->finished_offset) | |
9b409511 YQ |
9239 | return TARGET_XFER_EOF; |
9240 | ||
0876f84a DJ |
9241 | |
9242 | /* Otherwise, we're now reading something different. Discard | |
9243 | the cache. */ | |
8e88304f TT |
9244 | xfree (rs->finished_object); |
9245 | xfree (rs->finished_annex); | |
9246 | rs->finished_object = NULL; | |
9247 | rs->finished_annex = NULL; | |
0876f84a DJ |
9248 | } |
9249 | ||
9250 | /* Request only enough to fit in a single packet. The actual data | |
9251 | may not, since we don't know how much of it will need to be escaped; | |
9252 | the target is free to respond with slightly less data. We subtract | |
9253 | five to account for the response type and the protocol frame. */ | |
9254 | n = min (get_remote_packet_size () - 5, len); | |
9255 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9256 | object_name, annex ? annex : "", | |
9257 | phex_nz (offset, sizeof offset), | |
9258 | phex_nz (n, sizeof n)); | |
9259 | i = putpkt (rs->buf); | |
9260 | if (i < 0) | |
2ed4b548 | 9261 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9262 | |
9263 | rs->buf[0] = '\0'; | |
9264 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9265 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9266 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9267 | |
9268 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9269 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9270 | ||
9271 | /* 'm' means there is (or at least might be) more data after this | |
9272 | batch. That does not make sense unless there's at least one byte | |
9273 | of data in this reply. */ | |
9274 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9275 | error (_("Remote qXfer reply contained no data.")); | |
9276 | ||
9277 | /* Got some data. */ | |
bc20a4af PA |
9278 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9279 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9280 | |
9281 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9282 | or possibly empty. If we have the final block of a non-empty |
9283 | object, record this fact to bypass a subsequent partial read. */ | |
9284 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9285 | { |
8e88304f TT |
9286 | rs->finished_object = xstrdup (object_name); |
9287 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9288 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9289 | } |
9290 | ||
9b409511 YQ |
9291 | if (i == 0) |
9292 | return TARGET_XFER_EOF; | |
9293 | else | |
9294 | { | |
9295 | *xfered_len = i; | |
9296 | return TARGET_XFER_OK; | |
9297 | } | |
0876f84a DJ |
9298 | } |
9299 | ||
9b409511 | 9300 | static enum target_xfer_status |
4b8a223f | 9301 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9302 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9303 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9304 | ULONGEST *xfered_len) | |
c906108c | 9305 | { |
82f73884 | 9306 | struct remote_state *rs; |
c906108c | 9307 | int i; |
6d820c5c | 9308 | char *p2; |
1e3ff5ad | 9309 | char query_type; |
124e13d9 | 9310 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9311 | |
e6e4e701 | 9312 | set_remote_traceframe (); |
82f73884 PA |
9313 | set_general_thread (inferior_ptid); |
9314 | ||
9315 | rs = get_remote_state (); | |
9316 | ||
b2182ed2 | 9317 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9318 | if (object == TARGET_OBJECT_MEMORY) |
9319 | { | |
2d717e4f DJ |
9320 | /* If the remote target is connected but not running, we should |
9321 | pass this request down to a lower stratum (e.g. the executable | |
9322 | file). */ | |
9323 | if (!target_has_execution) | |
9b409511 | 9324 | return TARGET_XFER_EOF; |
2d717e4f | 9325 | |
21e3b9b9 | 9326 | if (writebuf != NULL) |
124e13d9 SM |
9327 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9328 | xfered_len); | |
21e3b9b9 | 9329 | else |
124e13d9 SM |
9330 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9331 | xfered_len); | |
21e3b9b9 DJ |
9332 | } |
9333 | ||
0df8b418 | 9334 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9335 | if (object == TARGET_OBJECT_SPU) |
9336 | { | |
9337 | if (readbuf) | |
9338 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9339 | xfered_len, &remote_protocol_packets |
9340 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9341 | else |
9342 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9343 | xfered_len, &remote_protocol_packets |
9344 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9345 | } |
9346 | ||
4aa995e1 PA |
9347 | /* Handle extra signal info using qxfer packets. */ |
9348 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9349 | { | |
9350 | if (readbuf) | |
9351 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9352 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9353 | [PACKET_qXfer_siginfo_read]); |
9354 | else | |
3e43a32a | 9355 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9356 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9357 | &remote_protocol_packets |
9358 | [PACKET_qXfer_siginfo_write]); | |
9359 | } | |
9360 | ||
0fb4aa4b PA |
9361 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9362 | { | |
9363 | if (readbuf) | |
3e43a32a | 9364 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9365 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9366 | &remote_protocol_packets |
9367 | [PACKET_qXfer_statictrace_read]); | |
9368 | else | |
2ed4b548 | 9369 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9370 | } |
9371 | ||
a76d924d DJ |
9372 | /* Only handle flash writes. */ |
9373 | if (writebuf != NULL) | |
9374 | { | |
9375 | LONGEST xfered; | |
9376 | ||
9377 | switch (object) | |
9378 | { | |
9379 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9380 | return remote_flash_write (ops, offset, len, xfered_len, |
9381 | writebuf); | |
a76d924d DJ |
9382 | |
9383 | default: | |
2ed4b548 | 9384 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9385 | } |
9386 | } | |
4b8a223f | 9387 | |
1e3ff5ad AC |
9388 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9389 | objects!!! Instead specify new query packets. */ | |
9390 | switch (object) | |
c906108c | 9391 | { |
1e3ff5ad AC |
9392 | case TARGET_OBJECT_AVR: |
9393 | query_type = 'R'; | |
9394 | break; | |
802188a7 RM |
9395 | |
9396 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9397 | gdb_assert (annex == NULL); |
9398 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9399 | xfered_len, |
0876f84a | 9400 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9401 | |
23181151 DJ |
9402 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9403 | return remote_read_qxfer | |
9b409511 | 9404 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9405 | &remote_protocol_packets[PACKET_qXfer_features]); |
9406 | ||
cfa9d6d9 DJ |
9407 | case TARGET_OBJECT_LIBRARIES: |
9408 | return remote_read_qxfer | |
9b409511 | 9409 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9410 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9411 | ||
2268b414 JK |
9412 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9413 | return remote_read_qxfer | |
9b409511 | 9414 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9415 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9416 | ||
fd79ecee DJ |
9417 | case TARGET_OBJECT_MEMORY_MAP: |
9418 | gdb_assert (annex == NULL); | |
9419 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9420 | xfered_len, |
fd79ecee DJ |
9421 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9422 | ||
07e059b5 VP |
9423 | case TARGET_OBJECT_OSDATA: |
9424 | /* Should only get here if we're connected. */ | |
5d93a237 | 9425 | gdb_assert (rs->remote_desc); |
07e059b5 | 9426 | return remote_read_qxfer |
9b409511 | 9427 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9428 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9429 | ||
dc146f7c VP |
9430 | case TARGET_OBJECT_THREADS: |
9431 | gdb_assert (annex == NULL); | |
9432 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9433 | xfered_len, |
dc146f7c VP |
9434 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9435 | ||
b3b9301e PA |
9436 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9437 | gdb_assert (annex == NULL); | |
9438 | return remote_read_qxfer | |
9b409511 | 9439 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9440 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9441 | |
9442 | case TARGET_OBJECT_FDPIC: | |
9443 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9444 | xfered_len, |
78d85199 | 9445 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9446 | |
9447 | case TARGET_OBJECT_OPENVMS_UIB: | |
9448 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9449 | xfered_len, |
169081d0 TG |
9450 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9451 | ||
9accd112 MM |
9452 | case TARGET_OBJECT_BTRACE: |
9453 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9454 | xfered_len, |
9accd112 MM |
9455 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9456 | ||
f4abbc16 MM |
9457 | case TARGET_OBJECT_BTRACE_CONF: |
9458 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9459 | len, xfered_len, | |
9460 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9461 | ||
c78fa86a GB |
9462 | case TARGET_OBJECT_EXEC_FILE: |
9463 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9464 | len, xfered_len, | |
9465 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9466 | ||
1e3ff5ad | 9467 | default: |
2ed4b548 | 9468 | return TARGET_XFER_E_IO; |
c906108c SS |
9469 | } |
9470 | ||
0df8b418 | 9471 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9472 | large enough let the caller deal with it. */ |
ea9c271d | 9473 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9474 | return TARGET_XFER_E_IO; |
ea9c271d | 9475 | len = get_remote_packet_size (); |
1e3ff5ad | 9476 | |
23860348 | 9477 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9478 | if (!rs->remote_desc) |
8a3fe4f8 | 9479 | error (_("remote query is only available after target open")); |
c906108c | 9480 | |
1e3ff5ad | 9481 | gdb_assert (annex != NULL); |
4b8a223f | 9482 | gdb_assert (readbuf != NULL); |
c906108c | 9483 | |
6d820c5c | 9484 | p2 = rs->buf; |
c906108c SS |
9485 | *p2++ = 'q'; |
9486 | *p2++ = query_type; | |
9487 | ||
23860348 MS |
9488 | /* We used one buffer char for the remote protocol q command and |
9489 | another for the query type. As the remote protocol encapsulation | |
9490 | uses 4 chars plus one extra in case we are debugging | |
9491 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9492 | string. */ | |
c906108c | 9493 | i = 0; |
ea9c271d | 9494 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9495 | { |
1e3ff5ad AC |
9496 | /* Bad caller may have sent forbidden characters. */ |
9497 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9498 | *p2++ = annex[i]; | |
c906108c SS |
9499 | i++; |
9500 | } | |
1e3ff5ad AC |
9501 | *p2 = '\0'; |
9502 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9503 | |
6d820c5c | 9504 | i = putpkt (rs->buf); |
c5aa993b | 9505 | if (i < 0) |
2ed4b548 | 9506 | return TARGET_XFER_E_IO; |
c906108c | 9507 | |
6d820c5c DJ |
9508 | getpkt (&rs->buf, &rs->buf_size, 0); |
9509 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9510 | |
9b409511 YQ |
9511 | *xfered_len = strlen ((char *) readbuf); |
9512 | return TARGET_XFER_OK; | |
c906108c SS |
9513 | } |
9514 | ||
08388c79 DE |
9515 | static int |
9516 | remote_search_memory (struct target_ops* ops, | |
9517 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9518 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9519 | CORE_ADDR *found_addrp) | |
9520 | { | |
f5656ead | 9521 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9522 | struct remote_state *rs = get_remote_state (); |
9523 | int max_size = get_memory_write_packet_size (); | |
9524 | struct packet_config *packet = | |
9525 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9526 | /* Number of packet bytes used to encode the pattern; |
9527 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9528 | int escaped_pattern_len; |
0df8b418 | 9529 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9530 | int used_pattern_len; |
9531 | int i; | |
9532 | int found; | |
9533 | ULONGEST found_addr; | |
9534 | ||
9535 | /* Don't go to the target if we don't have to. | |
9536 | This is done before checking packet->support to avoid the possibility that | |
9537 | a success for this edge case means the facility works in general. */ | |
9538 | if (pattern_len > search_space_len) | |
9539 | return 0; | |
9540 | if (pattern_len == 0) | |
9541 | { | |
9542 | *found_addrp = start_addr; | |
9543 | return 1; | |
9544 | } | |
9545 | ||
9546 | /* If we already know the packet isn't supported, fall back to the simple | |
9547 | way of searching memory. */ | |
9548 | ||
4082afcc | 9549 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9550 | { |
9551 | /* Target doesn't provided special support, fall back and use the | |
9552 | standard support (copy memory and do the search here). */ | |
9553 | return simple_search_memory (ops, start_addr, search_space_len, | |
9554 | pattern, pattern_len, found_addrp); | |
9555 | } | |
9556 | ||
28439a30 PA |
9557 | /* Make sure the remote is pointing at the right process. */ |
9558 | set_general_process (); | |
9559 | ||
08388c79 DE |
9560 | /* Insert header. */ |
9561 | i = snprintf (rs->buf, max_size, | |
9562 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9563 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9564 | phex_nz (search_space_len, sizeof (search_space_len))); |
9565 | max_size -= (i + 1); | |
9566 | ||
9567 | /* Escape as much data as fits into rs->buf. */ | |
9568 | escaped_pattern_len = | |
124e13d9 | 9569 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9570 | &used_pattern_len, max_size); |
9571 | ||
9572 | /* Bail if the pattern is too large. */ | |
9573 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9574 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9575 | |
9576 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9577 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9578 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9579 | { | |
9580 | /* The request may not have worked because the command is not | |
9581 | supported. If so, fall back to the simple way. */ | |
9582 | if (packet->support == PACKET_DISABLE) | |
9583 | { | |
9584 | return simple_search_memory (ops, start_addr, search_space_len, | |
9585 | pattern, pattern_len, found_addrp); | |
9586 | } | |
9587 | return -1; | |
9588 | } | |
9589 | ||
9590 | if (rs->buf[0] == '0') | |
9591 | found = 0; | |
9592 | else if (rs->buf[0] == '1') | |
9593 | { | |
9594 | found = 1; | |
9595 | if (rs->buf[1] != ',') | |
10e0fa18 | 9596 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9597 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9598 | *found_addrp = found_addr; | |
9599 | } | |
9600 | else | |
10e0fa18 | 9601 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9602 | |
9603 | return found; | |
9604 | } | |
9605 | ||
96baa820 | 9606 | static void |
a30bf1f1 | 9607 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9608 | struct ui_file *outbuf) |
96baa820 | 9609 | { |
d01949b6 | 9610 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9611 | char *p = rs->buf; |
96baa820 | 9612 | |
5d93a237 | 9613 | if (!rs->remote_desc) |
8a3fe4f8 | 9614 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9615 | |
23860348 | 9616 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9617 | if (command == NULL) |
9618 | command = ""; | |
9619 | ||
23860348 | 9620 | /* The query prefix. */ |
2e9f7625 DJ |
9621 | strcpy (rs->buf, "qRcmd,"); |
9622 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9623 | |
3e43a32a MS |
9624 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9625 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9626 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9627 | |
23860348 | 9628 | /* Encode the actual command. */ |
a30bf1f1 | 9629 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9630 | |
6d820c5c | 9631 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9632 | error (_("Communication problem with target.")); |
96baa820 JM |
9633 | |
9634 | /* get/display the response */ | |
9635 | while (1) | |
9636 | { | |
2e9f7625 DJ |
9637 | char *buf; |
9638 | ||
00bf0b85 | 9639 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9640 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9641 | rs->buf[0] = '\0'; |
5b37825d PW |
9642 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9643 | { | |
9644 | /* Timeout. Continue to (try to) read responses. | |
9645 | This is better than stopping with an error, assuming the stub | |
9646 | is still executing the (long) monitor command. | |
9647 | If needed, the user can interrupt gdb using C-c, obtaining | |
9648 | an effect similar to stop on timeout. */ | |
9649 | continue; | |
9650 | } | |
2e9f7625 | 9651 | buf = rs->buf; |
96baa820 | 9652 | if (buf[0] == '\0') |
8a3fe4f8 | 9653 | error (_("Target does not support this command.")); |
96baa820 JM |
9654 | if (buf[0] == 'O' && buf[1] != 'K') |
9655 | { | |
23860348 | 9656 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9657 | continue; |
9658 | } | |
9659 | if (strcmp (buf, "OK") == 0) | |
9660 | break; | |
7be570e7 JM |
9661 | if (strlen (buf) == 3 && buf[0] == 'E' |
9662 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9663 | { | |
8a3fe4f8 | 9664 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9665 | } |
96baa820 JM |
9666 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9667 | { | |
9668 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9669 | |
96baa820 JM |
9670 | fputc_unfiltered (c, outbuf); |
9671 | } | |
9672 | break; | |
9673 | } | |
9674 | } | |
9675 | ||
fd79ecee DJ |
9676 | static VEC(mem_region_s) * |
9677 | remote_memory_map (struct target_ops *ops) | |
9678 | { | |
9679 | VEC(mem_region_s) *result = NULL; | |
9680 | char *text = target_read_stralloc (¤t_target, | |
9681 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9682 | ||
9683 | if (text) | |
9684 | { | |
9685 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9686 | |
fd79ecee DJ |
9687 | result = parse_memory_map (text); |
9688 | do_cleanups (back_to); | |
9689 | } | |
9690 | ||
9691 | return result; | |
9692 | } | |
9693 | ||
c906108c | 9694 | static void |
fba45db2 | 9695 | packet_command (char *args, int from_tty) |
c906108c | 9696 | { |
d01949b6 | 9697 | struct remote_state *rs = get_remote_state (); |
c906108c | 9698 | |
5d93a237 | 9699 | if (!rs->remote_desc) |
8a3fe4f8 | 9700 | error (_("command can only be used with remote target")); |
c906108c | 9701 | |
c5aa993b | 9702 | if (!args) |
8a3fe4f8 | 9703 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9704 | |
9705 | puts_filtered ("sending: "); | |
9706 | print_packet (args); | |
9707 | puts_filtered ("\n"); | |
9708 | putpkt (args); | |
9709 | ||
6d820c5c | 9710 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9711 | puts_filtered ("received: "); |
6d820c5c | 9712 | print_packet (rs->buf); |
c906108c SS |
9713 | puts_filtered ("\n"); |
9714 | } | |
9715 | ||
9716 | #if 0 | |
23860348 | 9717 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9718 | |
a14ed312 | 9719 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9720 | |
a14ed312 | 9721 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9722 | |
a14ed312 | 9723 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9724 | |
a14ed312 | 9725 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9726 | |
23860348 | 9727 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9728 | |
a14ed312 | 9729 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9730 | |
23860348 | 9731 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9732 | |
a14ed312 | 9733 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9734 | |
a14ed312 | 9735 | static void init_remote_threadtests (void); |
c906108c | 9736 | |
23860348 | 9737 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9738 | |
9739 | static void | |
fba45db2 | 9740 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9741 | { |
9742 | int sample_thread = SAMPLE_THREAD; | |
9743 | ||
a3f17187 | 9744 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9745 | set_general_thread (sample_thread); |
c906108c SS |
9746 | } |
9747 | ||
9748 | ||
9749 | static void | |
fba45db2 | 9750 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9751 | { |
9752 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9753 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9754 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9755 | |
79d7f229 | 9756 | if (remote_thread_alive (ptid)) |
c906108c SS |
9757 | printf_filtered ("PASS: Thread alive test\n"); |
9758 | else | |
9759 | printf_filtered ("FAIL: Thread alive test\n"); | |
9760 | } | |
9761 | ||
23860348 | 9762 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9763 | |
9764 | void | |
fba45db2 | 9765 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9766 | { |
9767 | char hexid[20]; | |
9768 | ||
23860348 | 9769 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9770 | hexid[16] = 0; |
9771 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9772 | } | |
9773 | ||
9774 | static void | |
fba45db2 | 9775 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9776 | { |
9777 | int startflag = 1; | |
9778 | threadref nextthread; | |
9779 | int done, result_count; | |
9780 | threadref threadlist[3]; | |
9781 | ||
9782 | printf_filtered ("Remote Threadlist test\n"); | |
9783 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9784 | &result_count, &threadlist[0])) | |
9785 | printf_filtered ("FAIL: threadlist test\n"); | |
9786 | else | |
9787 | { | |
9788 | threadref *scan = threadlist; | |
9789 | threadref *limit = scan + result_count; | |
9790 | ||
9791 | while (scan < limit) | |
9792 | output_threadid (" thread ", scan++); | |
9793 | } | |
9794 | } | |
9795 | ||
9796 | void | |
fba45db2 | 9797 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9798 | { |
9799 | output_threadid ("Threadid: ", &info->threadid); | |
9800 | printf_filtered ("Name: %s\n ", info->shortname); | |
9801 | printf_filtered ("State: %s\n", info->display); | |
9802 | printf_filtered ("other: %s\n\n", info->more_display); | |
9803 | } | |
9804 | ||
9805 | int | |
fba45db2 | 9806 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9807 | { |
9808 | int result; | |
9809 | int set; | |
9810 | struct gdb_ext_thread_info threadinfo; | |
9811 | ||
9812 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9813 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9814 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9815 | display_thread_info (&threadinfo); | |
9816 | return result; | |
9817 | } | |
9818 | ||
9819 | static void | |
fba45db2 | 9820 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9821 | { |
9822 | int athread = SAMPLE_THREAD; | |
9823 | threadref thread; | |
9824 | int set; | |
9825 | ||
9826 | int_to_threadref (&thread, athread); | |
9827 | printf_filtered ("Remote Threadinfo test\n"); | |
9828 | if (!get_and_display_threadinfo (&thread)) | |
9829 | printf_filtered ("FAIL cannot get thread info\n"); | |
9830 | } | |
9831 | ||
9832 | static int | |
fba45db2 | 9833 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9834 | { |
9835 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9836 | return get_and_display_threadinfo (ref); | |
9837 | } | |
9838 | ||
9839 | static void | |
fba45db2 | 9840 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9841 | { |
9842 | printf_filtered ("Remote Threadlist update test\n"); | |
9843 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9844 | } | |
9845 | ||
9846 | static void | |
9847 | init_remote_threadtests (void) | |
9848 | { | |
3e43a32a MS |
9849 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9850 | _("Fetch and print the remote list of " | |
9851 | "thread identifiers, one pkt only")); | |
c906108c | 9852 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9853 | _("Fetch and display info about one thread")); |
c906108c | 9854 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9855 | _("Test setting to a different thread")); |
c906108c | 9856 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9857 | _("Iterate through updating all remote thread info")); |
c906108c | 9858 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9859 | _(" Remote thread alive test ")); |
c906108c SS |
9860 | } |
9861 | ||
9862 | #endif /* 0 */ | |
9863 | ||
f3fb8c85 MS |
9864 | /* Convert a thread ID to a string. Returns the string in a static |
9865 | buffer. */ | |
9866 | ||
9867 | static char * | |
117de6a9 | 9868 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9869 | { |
79d7f229 | 9870 | static char buf[64]; |
82f73884 | 9871 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9872 | |
7cee1e54 PA |
9873 | if (ptid_equal (ptid, null_ptid)) |
9874 | return normal_pid_to_str (ptid); | |
9875 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9876 | { |
9877 | /* Printing an inferior target id. */ | |
9878 | ||
9879 | /* When multi-process extensions are off, there's no way in the | |
9880 | remote protocol to know the remote process id, if there's any | |
9881 | at all. There's one exception --- when we're connected with | |
9882 | target extended-remote, and we manually attached to a process | |
9883 | with "attach PID". We don't record anywhere a flag that | |
9884 | allows us to distinguish that case from the case of | |
9885 | connecting with extended-remote and the stub already being | |
9886 | attached to a process, and reporting yes to qAttached, hence | |
9887 | no smart special casing here. */ | |
9888 | if (!remote_multi_process_p (rs)) | |
9889 | { | |
9890 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9891 | return buf; | |
9892 | } | |
9893 | ||
9894 | return normal_pid_to_str (ptid); | |
82f73884 | 9895 | } |
ecd0ada5 | 9896 | else |
79d7f229 | 9897 | { |
ecd0ada5 PA |
9898 | if (ptid_equal (magic_null_ptid, ptid)) |
9899 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9900 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
9901 | if (ptid_get_lwp (ptid) == 0) |
9902 | return normal_pid_to_str (ptid); | |
9903 | else | |
9904 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
9905 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
9906 | else |
9907 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 9908 | ptid_get_lwp (ptid)); |
79d7f229 PA |
9909 | return buf; |
9910 | } | |
f3fb8c85 MS |
9911 | } |
9912 | ||
38691318 KB |
9913 | /* Get the address of the thread local variable in OBJFILE which is |
9914 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9915 | ||
9916 | static CORE_ADDR | |
117de6a9 PA |
9917 | remote_get_thread_local_address (struct target_ops *ops, |
9918 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9919 | { |
4082afcc | 9920 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
9921 | { |
9922 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9923 | char *p = rs->buf; |
82f73884 | 9924 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9925 | enum packet_result result; |
38691318 KB |
9926 | |
9927 | strcpy (p, "qGetTLSAddr:"); | |
9928 | p += strlen (p); | |
82f73884 | 9929 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9930 | *p++ = ','; |
9931 | p += hexnumstr (p, offset); | |
9932 | *p++ = ','; | |
9933 | p += hexnumstr (p, lm); | |
9934 | *p++ = '\0'; | |
9935 | ||
6d820c5c DJ |
9936 | putpkt (rs->buf); |
9937 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9938 | result = packet_ok (rs->buf, |
9939 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9940 | if (result == PACKET_OK) |
38691318 KB |
9941 | { |
9942 | ULONGEST result; | |
9943 | ||
6d820c5c | 9944 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9945 | return result; |
9946 | } | |
571dd617 | 9947 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9948 | throw_error (TLS_GENERIC_ERROR, |
9949 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9950 | else |
109c3e39 AC |
9951 | throw_error (TLS_GENERIC_ERROR, |
9952 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9953 | } |
9954 | else | |
109c3e39 AC |
9955 | throw_error (TLS_GENERIC_ERROR, |
9956 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9957 | /* Not reached. */ |
9958 | return 0; | |
9959 | } | |
9960 | ||
711e434b PM |
9961 | /* Provide thread local base, i.e. Thread Information Block address. |
9962 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9963 | ||
70221824 | 9964 | static int |
bd7ae0f5 | 9965 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 9966 | { |
4082afcc | 9967 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
9968 | { |
9969 | struct remote_state *rs = get_remote_state (); | |
9970 | char *p = rs->buf; | |
9971 | char *endp = rs->buf + get_remote_packet_size (); | |
9972 | enum packet_result result; | |
9973 | ||
9974 | strcpy (p, "qGetTIBAddr:"); | |
9975 | p += strlen (p); | |
9976 | p = write_ptid (p, endp, ptid); | |
9977 | *p++ = '\0'; | |
9978 | ||
9979 | putpkt (rs->buf); | |
9980 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9981 | result = packet_ok (rs->buf, | |
9982 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9983 | if (result == PACKET_OK) | |
9984 | { | |
9985 | ULONGEST result; | |
9986 | ||
9987 | unpack_varlen_hex (rs->buf, &result); | |
9988 | if (addr) | |
9989 | *addr = (CORE_ADDR) result; | |
9990 | return 1; | |
9991 | } | |
9992 | else if (result == PACKET_UNKNOWN) | |
9993 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9994 | else | |
9995 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9996 | } | |
9997 | else | |
9998 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9999 | /* Not reached. */ | |
10000 | return 0; | |
10001 | } | |
10002 | ||
29709017 DJ |
10003 | /* Support for inferring a target description based on the current |
10004 | architecture and the size of a 'g' packet. While the 'g' packet | |
10005 | can have any size (since optional registers can be left off the | |
10006 | end), some sizes are easily recognizable given knowledge of the | |
10007 | approximate architecture. */ | |
10008 | ||
10009 | struct remote_g_packet_guess | |
10010 | { | |
10011 | int bytes; | |
10012 | const struct target_desc *tdesc; | |
10013 | }; | |
10014 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10015 | DEF_VEC_O(remote_g_packet_guess_s); | |
10016 | ||
10017 | struct remote_g_packet_data | |
10018 | { | |
10019 | VEC(remote_g_packet_guess_s) *guesses; | |
10020 | }; | |
10021 | ||
10022 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10023 | ||
10024 | static void * | |
10025 | remote_g_packet_data_init (struct obstack *obstack) | |
10026 | { | |
10027 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10028 | } | |
10029 | ||
10030 | void | |
10031 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10032 | const struct target_desc *tdesc) | |
10033 | { | |
10034 | struct remote_g_packet_data *data | |
10035 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
10036 | struct remote_g_packet_guess new_guess, *guess; | |
10037 | int ix; | |
10038 | ||
10039 | gdb_assert (tdesc != NULL); | |
10040 | ||
10041 | for (ix = 0; | |
10042 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10043 | ix++) | |
10044 | if (guess->bytes == bytes) | |
10045 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10046 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10047 | bytes); |
10048 | ||
10049 | new_guess.bytes = bytes; | |
10050 | new_guess.tdesc = tdesc; | |
10051 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10052 | } | |
10053 | ||
d962ef82 DJ |
10054 | /* Return 1 if remote_read_description would do anything on this target |
10055 | and architecture, 0 otherwise. */ | |
10056 | ||
10057 | static int | |
10058 | remote_read_description_p (struct target_ops *target) | |
10059 | { | |
10060 | struct remote_g_packet_data *data | |
f5656ead | 10061 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
10062 | |
10063 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10064 | return 1; | |
10065 | ||
10066 | return 0; | |
10067 | } | |
10068 | ||
29709017 DJ |
10069 | static const struct target_desc * |
10070 | remote_read_description (struct target_ops *target) | |
10071 | { | |
10072 | struct remote_g_packet_data *data | |
f5656ead | 10073 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 10074 | |
d962ef82 DJ |
10075 | /* Do not try this during initial connection, when we do not know |
10076 | whether there is a running but stopped thread. */ | |
10077 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10078 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10079 | |
29709017 DJ |
10080 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10081 | { | |
10082 | struct remote_g_packet_guess *guess; | |
10083 | int ix; | |
10084 | int bytes = send_g_packet (); | |
10085 | ||
10086 | for (ix = 0; | |
10087 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10088 | ix++) | |
10089 | if (guess->bytes == bytes) | |
10090 | return guess->tdesc; | |
10091 | ||
10092 | /* We discard the g packet. A minor optimization would be to | |
10093 | hold on to it, and fill the register cache once we have selected | |
10094 | an architecture, but it's too tricky to do safely. */ | |
10095 | } | |
10096 | ||
2117c711 | 10097 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10098 | } |
10099 | ||
a6b151f1 DJ |
10100 | /* Remote file transfer support. This is host-initiated I/O, not |
10101 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10102 | ||
10103 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10104 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10105 | decrease *LEFT. Otherwise raise an error. */ | |
10106 | ||
10107 | static void | |
10108 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10109 | { | |
10110 | int len = strlen (string); | |
10111 | ||
10112 | if (len > *left) | |
10113 | error (_("Packet too long for target.")); | |
10114 | ||
10115 | memcpy (*buffer, string, len); | |
10116 | *buffer += len; | |
10117 | *left -= len; | |
10118 | ||
10119 | /* NUL-terminate the buffer as a convenience, if there is | |
10120 | room. */ | |
10121 | if (*left) | |
10122 | **buffer = '\0'; | |
10123 | } | |
10124 | ||
10125 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10126 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10127 | decrease *LEFT. Otherwise raise an error. */ | |
10128 | ||
10129 | static void | |
10130 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10131 | int len) | |
10132 | { | |
10133 | if (2 * len > *left) | |
10134 | error (_("Packet too long for target.")); | |
10135 | ||
10136 | bin2hex (bytes, *buffer, len); | |
10137 | *buffer += 2 * len; | |
10138 | *left -= 2 * len; | |
10139 | ||
10140 | /* NUL-terminate the buffer as a convenience, if there is | |
10141 | room. */ | |
10142 | if (*left) | |
10143 | **buffer = '\0'; | |
10144 | } | |
10145 | ||
10146 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10147 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10148 | decrease *LEFT. Otherwise raise an error. */ | |
10149 | ||
10150 | static void | |
10151 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10152 | { | |
10153 | int len = hexnumlen (value); | |
10154 | ||
10155 | if (len > *left) | |
10156 | error (_("Packet too long for target.")); | |
10157 | ||
10158 | hexnumstr (*buffer, value); | |
10159 | *buffer += len; | |
10160 | *left -= len; | |
10161 | ||
10162 | /* NUL-terminate the buffer as a convenience, if there is | |
10163 | room. */ | |
10164 | if (*left) | |
10165 | **buffer = '\0'; | |
10166 | } | |
10167 | ||
10168 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10169 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10170 | was included, and *ATTACHMENT to point to the start of the annex | |
10171 | if any. The length of the packet isn't needed here; there may | |
10172 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10173 | ||
10174 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10175 | -1 is returned, the other variables may not be initialized. */ | |
10176 | ||
10177 | static int | |
10178 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10179 | int *remote_errno, char **attachment) | |
10180 | { | |
10181 | char *p, *p2; | |
10182 | ||
10183 | *remote_errno = 0; | |
10184 | *attachment = NULL; | |
10185 | ||
10186 | if (buffer[0] != 'F') | |
10187 | return -1; | |
10188 | ||
10189 | errno = 0; | |
10190 | *retcode = strtol (&buffer[1], &p, 16); | |
10191 | if (errno != 0 || p == &buffer[1]) | |
10192 | return -1; | |
10193 | ||
10194 | /* Check for ",errno". */ | |
10195 | if (*p == ',') | |
10196 | { | |
10197 | errno = 0; | |
10198 | *remote_errno = strtol (p + 1, &p2, 16); | |
10199 | if (errno != 0 || p + 1 == p2) | |
10200 | return -1; | |
10201 | p = p2; | |
10202 | } | |
10203 | ||
10204 | /* Check for ";attachment". If there is no attachment, the | |
10205 | packet should end here. */ | |
10206 | if (*p == ';') | |
10207 | { | |
10208 | *attachment = p + 1; | |
10209 | return 0; | |
10210 | } | |
10211 | else if (*p == '\0') | |
10212 | return 0; | |
10213 | else | |
10214 | return -1; | |
10215 | } | |
10216 | ||
10217 | /* Send a prepared I/O packet to the target and read its response. | |
10218 | The prepared packet is in the global RS->BUF before this function | |
10219 | is called, and the answer is there when we return. | |
10220 | ||
10221 | COMMAND_BYTES is the length of the request to send, which may include | |
10222 | binary data. WHICH_PACKET is the packet configuration to check | |
10223 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10224 | is set to the error number and -1 is returned. Otherwise the value | |
10225 | returned by the function is returned. | |
10226 | ||
10227 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10228 | attachment is expected; an error will be reported if there's a | |
10229 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10230 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10231 | attachment's length. */ | |
10232 | ||
10233 | static int | |
10234 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10235 | int *remote_errno, char **attachment, | |
10236 | int *attachment_len) | |
10237 | { | |
10238 | struct remote_state *rs = get_remote_state (); | |
10239 | int ret, bytes_read; | |
10240 | char *attachment_tmp; | |
10241 | ||
5d93a237 | 10242 | if (!rs->remote_desc |
4082afcc | 10243 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10244 | { |
10245 | *remote_errno = FILEIO_ENOSYS; | |
10246 | return -1; | |
10247 | } | |
10248 | ||
10249 | putpkt_binary (rs->buf, command_bytes); | |
10250 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10251 | ||
10252 | /* If it timed out, something is wrong. Don't try to parse the | |
10253 | buffer. */ | |
10254 | if (bytes_read < 0) | |
10255 | { | |
10256 | *remote_errno = FILEIO_EINVAL; | |
10257 | return -1; | |
10258 | } | |
10259 | ||
10260 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10261 | { | |
10262 | case PACKET_ERROR: | |
10263 | *remote_errno = FILEIO_EINVAL; | |
10264 | return -1; | |
10265 | case PACKET_UNKNOWN: | |
10266 | *remote_errno = FILEIO_ENOSYS; | |
10267 | return -1; | |
10268 | case PACKET_OK: | |
10269 | break; | |
10270 | } | |
10271 | ||
10272 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10273 | &attachment_tmp)) | |
10274 | { | |
10275 | *remote_errno = FILEIO_EINVAL; | |
10276 | return -1; | |
10277 | } | |
10278 | ||
10279 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10280 | if ((attachment_tmp == NULL && attachment != NULL) | |
10281 | || (attachment_tmp != NULL && attachment == NULL)) | |
10282 | { | |
10283 | *remote_errno = FILEIO_EINVAL; | |
10284 | return -1; | |
10285 | } | |
10286 | ||
10287 | /* If an attachment was found, it must point into the packet buffer; | |
10288 | work out how many bytes there were. */ | |
10289 | if (attachment_tmp != NULL) | |
10290 | { | |
10291 | *attachment = attachment_tmp; | |
10292 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10293 | } | |
10294 | ||
10295 | return ret; | |
10296 | } | |
10297 | ||
15a201c8 GB |
10298 | /* Set the filesystem remote_hostio functions that take FILENAME |
10299 | arguments will use. Return 0 on success, or -1 if an error | |
10300 | occurs (and set *REMOTE_ERRNO). */ | |
10301 | ||
10302 | static int | |
10303 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10304 | { | |
10305 | struct remote_state *rs = get_remote_state (); | |
10306 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10307 | char *p = rs->buf; | |
10308 | int left = get_remote_packet_size () - 1; | |
10309 | char arg[9]; | |
10310 | int ret; | |
10311 | ||
10312 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10313 | return 0; | |
10314 | ||
10315 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10316 | return 0; | |
10317 | ||
10318 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10319 | ||
10320 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10321 | remote_buffer_add_string (&p, &left, arg); | |
10322 | ||
10323 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10324 | remote_errno, NULL, NULL); | |
10325 | ||
10326 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10327 | return 0; | |
10328 | ||
10329 | if (ret == 0) | |
10330 | rs->fs_pid = required_pid; | |
10331 | ||
10332 | return ret; | |
10333 | } | |
10334 | ||
12e2a5fd | 10335 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10336 | |
10337 | static int | |
cd897586 | 10338 | remote_hostio_open (struct target_ops *self, |
07c138c8 GB |
10339 | struct inferior *inf, const char *filename, |
10340 | int flags, int mode, int *remote_errno) | |
a6b151f1 DJ |
10341 | { |
10342 | struct remote_state *rs = get_remote_state (); | |
10343 | char *p = rs->buf; | |
10344 | int left = get_remote_packet_size () - 1; | |
10345 | ||
15a201c8 GB |
10346 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10347 | return -1; | |
10348 | ||
a6b151f1 DJ |
10349 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10350 | ||
10351 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10352 | strlen (filename)); | |
10353 | remote_buffer_add_string (&p, &left, ","); | |
10354 | ||
10355 | remote_buffer_add_int (&p, &left, flags); | |
10356 | remote_buffer_add_string (&p, &left, ","); | |
10357 | ||
10358 | remote_buffer_add_int (&p, &left, mode); | |
10359 | ||
10360 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10361 | remote_errno, NULL, NULL); | |
10362 | } | |
10363 | ||
12e2a5fd | 10364 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10365 | |
10366 | static int | |
0d866f62 TT |
10367 | remote_hostio_pwrite (struct target_ops *self, |
10368 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10369 | ULONGEST offset, int *remote_errno) |
10370 | { | |
10371 | struct remote_state *rs = get_remote_state (); | |
10372 | char *p = rs->buf; | |
10373 | int left = get_remote_packet_size (); | |
10374 | int out_len; | |
10375 | ||
10376 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
10377 | ||
10378 | remote_buffer_add_int (&p, &left, fd); | |
10379 | remote_buffer_add_string (&p, &left, ","); | |
10380 | ||
10381 | remote_buffer_add_int (&p, &left, offset); | |
10382 | remote_buffer_add_string (&p, &left, ","); | |
10383 | ||
124e13d9 | 10384 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10385 | get_remote_packet_size () - (p - rs->buf)); |
10386 | ||
10387 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10388 | remote_errno, NULL, NULL); | |
10389 | } | |
10390 | ||
12e2a5fd | 10391 | /* Implementation of to_fileio_pread. */ |
a6b151f1 DJ |
10392 | |
10393 | static int | |
a3be983c TT |
10394 | remote_hostio_pread (struct target_ops *self, |
10395 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
10396 | ULONGEST offset, int *remote_errno) |
10397 | { | |
10398 | struct remote_state *rs = get_remote_state (); | |
10399 | char *p = rs->buf; | |
10400 | char *attachment; | |
10401 | int left = get_remote_packet_size (); | |
10402 | int ret, attachment_len; | |
10403 | int read_len; | |
10404 | ||
10405 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10406 | ||
10407 | remote_buffer_add_int (&p, &left, fd); | |
10408 | remote_buffer_add_string (&p, &left, ","); | |
10409 | ||
10410 | remote_buffer_add_int (&p, &left, len); | |
10411 | remote_buffer_add_string (&p, &left, ","); | |
10412 | ||
10413 | remote_buffer_add_int (&p, &left, offset); | |
10414 | ||
10415 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10416 | remote_errno, &attachment, | |
10417 | &attachment_len); | |
10418 | ||
10419 | if (ret < 0) | |
10420 | return ret; | |
10421 | ||
bc20a4af | 10422 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10423 | read_buf, len); |
10424 | if (read_len != ret) | |
10425 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10426 | ||
10427 | return ret; | |
10428 | } | |
10429 | ||
12e2a5fd | 10430 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
10431 | |
10432 | static int | |
df39ea25 | 10433 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10434 | { |
10435 | struct remote_state *rs = get_remote_state (); | |
10436 | char *p = rs->buf; | |
10437 | int left = get_remote_packet_size () - 1; | |
10438 | ||
10439 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
10440 | ||
10441 | remote_buffer_add_int (&p, &left, fd); | |
10442 | ||
10443 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10444 | remote_errno, NULL, NULL); | |
10445 | } | |
10446 | ||
12e2a5fd | 10447 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
10448 | |
10449 | static int | |
dbbca37d | 10450 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
10451 | struct inferior *inf, const char *filename, |
10452 | int *remote_errno) | |
a6b151f1 DJ |
10453 | { |
10454 | struct remote_state *rs = get_remote_state (); | |
10455 | char *p = rs->buf; | |
10456 | int left = get_remote_packet_size () - 1; | |
10457 | ||
15a201c8 GB |
10458 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10459 | return -1; | |
10460 | ||
a6b151f1 DJ |
10461 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10462 | ||
10463 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10464 | strlen (filename)); | |
10465 | ||
10466 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10467 | remote_errno, NULL, NULL); | |
10468 | } | |
10469 | ||
12e2a5fd | 10470 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
10471 | |
10472 | static char * | |
fab5aa7c | 10473 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
10474 | struct inferior *inf, const char *filename, |
10475 | int *remote_errno) | |
b9e7b9c3 UW |
10476 | { |
10477 | struct remote_state *rs = get_remote_state (); | |
10478 | char *p = rs->buf; | |
10479 | char *attachment; | |
10480 | int left = get_remote_packet_size (); | |
10481 | int len, attachment_len; | |
10482 | int read_len; | |
10483 | char *ret; | |
10484 | ||
15a201c8 GB |
10485 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10486 | return NULL; | |
10487 | ||
b9e7b9c3 UW |
10488 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10489 | ||
10490 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10491 | strlen (filename)); | |
10492 | ||
10493 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10494 | remote_errno, &attachment, | |
10495 | &attachment_len); | |
10496 | ||
10497 | if (len < 0) | |
10498 | return NULL; | |
10499 | ||
10500 | ret = xmalloc (len + 1); | |
10501 | ||
bc20a4af PA |
10502 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10503 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10504 | if (read_len != len) |
10505 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10506 | ||
10507 | ret[len] = '\0'; | |
10508 | return ret; | |
10509 | } | |
10510 | ||
12e2a5fd | 10511 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
10512 | |
10513 | static int | |
10514 | remote_hostio_fstat (struct target_ops *self, | |
10515 | int fd, struct stat *st, | |
10516 | int *remote_errno) | |
10517 | { | |
10518 | struct remote_state *rs = get_remote_state (); | |
10519 | char *p = rs->buf; | |
10520 | int left = get_remote_packet_size (); | |
10521 | int attachment_len, ret; | |
10522 | char *attachment; | |
10523 | struct fio_stat fst; | |
10524 | int read_len; | |
10525 | ||
464b0089 GB |
10526 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10527 | ||
10528 | remote_buffer_add_int (&p, &left, fd); | |
10529 | ||
10530 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10531 | remote_errno, &attachment, | |
10532 | &attachment_len); | |
10533 | if (ret < 0) | |
0a93529c | 10534 | { |
464b0089 GB |
10535 | if (*remote_errno != FILEIO_ENOSYS) |
10536 | return ret; | |
10537 | ||
0a93529c GB |
10538 | /* Strictly we should return -1, ENOSYS here, but when |
10539 | "set sysroot remote:" was implemented in August 2008 | |
10540 | BFD's need for a stat function was sidestepped with | |
10541 | this hack. This was not remedied until March 2015 | |
10542 | so we retain the previous behavior to avoid breaking | |
10543 | compatibility. | |
10544 | ||
10545 | Note that the memset is a March 2015 addition; older | |
10546 | GDBs set st_size *and nothing else* so the structure | |
10547 | would have garbage in all other fields. This might | |
10548 | break something but retaining the previous behavior | |
10549 | here would be just too wrong. */ | |
10550 | ||
10551 | memset (st, 0, sizeof (struct stat)); | |
10552 | st->st_size = INT_MAX; | |
10553 | return 0; | |
10554 | } | |
10555 | ||
0a93529c GB |
10556 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10557 | (gdb_byte *) &fst, sizeof (fst)); | |
10558 | ||
10559 | if (read_len != ret) | |
10560 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10561 | ||
10562 | if (read_len != sizeof (fst)) | |
10563 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10564 | read_len, (int) sizeof (fst)); | |
10565 | ||
10566 | remote_fileio_to_host_stat (&fst, st); | |
10567 | ||
10568 | return 0; | |
10569 | } | |
10570 | ||
12e2a5fd | 10571 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
10572 | |
10573 | static int | |
10574 | remote_filesystem_is_local (struct target_ops *self) | |
10575 | { | |
10576 | /* Valgrind GDB presents itself as a remote target but works | |
10577 | on the local filesystem: it does not implement remote get | |
10578 | and users are not expected to set a sysroot. To handle | |
10579 | this case we treat the remote filesystem as local if the | |
10580 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
10581 | does not support vFile:open. */ | |
a3be80c3 | 10582 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
10583 | { |
10584 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
10585 | ||
10586 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
10587 | { | |
10588 | int fd, remote_errno; | |
10589 | ||
10590 | /* Try opening a file to probe support. The supplied | |
10591 | filename is irrelevant, we only care about whether | |
10592 | the stub recognizes the packet or not. */ | |
07c138c8 | 10593 | fd = remote_hostio_open (self, NULL, "just probing", |
e3dd7556 GB |
10594 | FILEIO_O_RDONLY, 0700, |
10595 | &remote_errno); | |
10596 | ||
10597 | if (fd >= 0) | |
10598 | remote_hostio_close (self, fd, &remote_errno); | |
10599 | ||
10600 | ps = packet_support (PACKET_vFile_open); | |
10601 | } | |
10602 | ||
10603 | if (ps == PACKET_DISABLE) | |
10604 | { | |
10605 | static int warning_issued = 0; | |
10606 | ||
10607 | if (!warning_issued) | |
10608 | { | |
10609 | warning (_("remote target does not support file" | |
10610 | " transfer, attempting to access files" | |
10611 | " from local filesystem.")); | |
10612 | warning_issued = 1; | |
10613 | } | |
10614 | ||
10615 | return 1; | |
10616 | } | |
10617 | } | |
10618 | ||
10619 | return 0; | |
10620 | } | |
10621 | ||
a6b151f1 DJ |
10622 | static int |
10623 | remote_fileio_errno_to_host (int errnum) | |
10624 | { | |
10625 | switch (errnum) | |
10626 | { | |
10627 | case FILEIO_EPERM: | |
10628 | return EPERM; | |
10629 | case FILEIO_ENOENT: | |
10630 | return ENOENT; | |
10631 | case FILEIO_EINTR: | |
10632 | return EINTR; | |
10633 | case FILEIO_EIO: | |
10634 | return EIO; | |
10635 | case FILEIO_EBADF: | |
10636 | return EBADF; | |
10637 | case FILEIO_EACCES: | |
10638 | return EACCES; | |
10639 | case FILEIO_EFAULT: | |
10640 | return EFAULT; | |
10641 | case FILEIO_EBUSY: | |
10642 | return EBUSY; | |
10643 | case FILEIO_EEXIST: | |
10644 | return EEXIST; | |
10645 | case FILEIO_ENODEV: | |
10646 | return ENODEV; | |
10647 | case FILEIO_ENOTDIR: | |
10648 | return ENOTDIR; | |
10649 | case FILEIO_EISDIR: | |
10650 | return EISDIR; | |
10651 | case FILEIO_EINVAL: | |
10652 | return EINVAL; | |
10653 | case FILEIO_ENFILE: | |
10654 | return ENFILE; | |
10655 | case FILEIO_EMFILE: | |
10656 | return EMFILE; | |
10657 | case FILEIO_EFBIG: | |
10658 | return EFBIG; | |
10659 | case FILEIO_ENOSPC: | |
10660 | return ENOSPC; | |
10661 | case FILEIO_ESPIPE: | |
10662 | return ESPIPE; | |
10663 | case FILEIO_EROFS: | |
10664 | return EROFS; | |
10665 | case FILEIO_ENOSYS: | |
10666 | return ENOSYS; | |
10667 | case FILEIO_ENAMETOOLONG: | |
10668 | return ENAMETOOLONG; | |
10669 | } | |
10670 | return -1; | |
10671 | } | |
10672 | ||
10673 | static char * | |
10674 | remote_hostio_error (int errnum) | |
10675 | { | |
10676 | int host_error = remote_fileio_errno_to_host (errnum); | |
10677 | ||
10678 | if (host_error == -1) | |
10679 | error (_("Unknown remote I/O error %d"), errnum); | |
10680 | else | |
10681 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10682 | } | |
10683 | ||
a6b151f1 DJ |
10684 | static void |
10685 | remote_hostio_close_cleanup (void *opaque) | |
10686 | { | |
10687 | int fd = *(int *) opaque; | |
10688 | int remote_errno; | |
10689 | ||
df39ea25 | 10690 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
10691 | } |
10692 | ||
10693 | void | |
10694 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10695 | { | |
10696 | struct cleanup *back_to, *close_cleanup; | |
10697 | int retcode, fd, remote_errno, bytes, io_size; | |
10698 | FILE *file; | |
10699 | gdb_byte *buffer; | |
10700 | int bytes_in_buffer; | |
10701 | int saw_eof; | |
10702 | ULONGEST offset; | |
5d93a237 | 10703 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10704 | |
5d93a237 | 10705 | if (!rs->remote_desc) |
a6b151f1 DJ |
10706 | error (_("command can only be used with remote target")); |
10707 | ||
614c279d | 10708 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10709 | if (file == NULL) |
10710 | perror_with_name (local_file); | |
7c8a8b04 | 10711 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10712 | |
07c138c8 | 10713 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 10714 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 DJ |
10715 | | FILEIO_O_TRUNC), |
10716 | 0700, &remote_errno); | |
10717 | if (fd == -1) | |
10718 | remote_hostio_error (remote_errno); | |
10719 | ||
10720 | /* Send up to this many bytes at once. They won't all fit in the | |
10721 | remote packet limit, so we'll transfer slightly fewer. */ | |
10722 | io_size = get_remote_packet_size (); | |
10723 | buffer = xmalloc (io_size); | |
10724 | make_cleanup (xfree, buffer); | |
10725 | ||
10726 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10727 | ||
10728 | bytes_in_buffer = 0; | |
10729 | saw_eof = 0; | |
10730 | offset = 0; | |
10731 | while (bytes_in_buffer || !saw_eof) | |
10732 | { | |
10733 | if (!saw_eof) | |
10734 | { | |
3e43a32a MS |
10735 | bytes = fread (buffer + bytes_in_buffer, 1, |
10736 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10737 | file); |
10738 | if (bytes == 0) | |
10739 | { | |
10740 | if (ferror (file)) | |
10741 | error (_("Error reading %s."), local_file); | |
10742 | else | |
10743 | { | |
10744 | /* EOF. Unless there is something still in the | |
10745 | buffer from the last iteration, we are done. */ | |
10746 | saw_eof = 1; | |
10747 | if (bytes_in_buffer == 0) | |
10748 | break; | |
10749 | } | |
10750 | } | |
10751 | } | |
10752 | else | |
10753 | bytes = 0; | |
10754 | ||
10755 | bytes += bytes_in_buffer; | |
10756 | bytes_in_buffer = 0; | |
10757 | ||
0d866f62 TT |
10758 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10759 | fd, buffer, bytes, | |
3e43a32a | 10760 | offset, &remote_errno); |
a6b151f1 DJ |
10761 | |
10762 | if (retcode < 0) | |
10763 | remote_hostio_error (remote_errno); | |
10764 | else if (retcode == 0) | |
10765 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10766 | else if (retcode < bytes) | |
10767 | { | |
10768 | /* Short write. Save the rest of the read data for the next | |
10769 | write. */ | |
10770 | bytes_in_buffer = bytes - retcode; | |
10771 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10772 | } | |
10773 | ||
10774 | offset += retcode; | |
10775 | } | |
10776 | ||
10777 | discard_cleanups (close_cleanup); | |
df39ea25 | 10778 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10779 | remote_hostio_error (remote_errno); |
10780 | ||
10781 | if (from_tty) | |
10782 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10783 | do_cleanups (back_to); | |
10784 | } | |
10785 | ||
10786 | void | |
10787 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10788 | { | |
10789 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10790 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10791 | FILE *file; |
10792 | gdb_byte *buffer; | |
10793 | ULONGEST offset; | |
5d93a237 | 10794 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10795 | |
5d93a237 | 10796 | if (!rs->remote_desc) |
a6b151f1 DJ |
10797 | error (_("command can only be used with remote target")); |
10798 | ||
07c138c8 | 10799 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 10800 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); |
a6b151f1 DJ |
10801 | if (fd == -1) |
10802 | remote_hostio_error (remote_errno); | |
10803 | ||
614c279d | 10804 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10805 | if (file == NULL) |
10806 | perror_with_name (local_file); | |
7c8a8b04 | 10807 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10808 | |
10809 | /* Send up to this many bytes at once. They won't all fit in the | |
10810 | remote packet limit, so we'll transfer slightly fewer. */ | |
10811 | io_size = get_remote_packet_size (); | |
10812 | buffer = xmalloc (io_size); | |
10813 | make_cleanup (xfree, buffer); | |
10814 | ||
10815 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10816 | ||
10817 | offset = 0; | |
10818 | while (1) | |
10819 | { | |
a3be983c TT |
10820 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10821 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10822 | if (bytes == 0) |
10823 | /* Success, but no bytes, means end-of-file. */ | |
10824 | break; | |
10825 | if (bytes == -1) | |
10826 | remote_hostio_error (remote_errno); | |
10827 | ||
10828 | offset += bytes; | |
10829 | ||
10830 | bytes = fwrite (buffer, 1, bytes, file); | |
10831 | if (bytes == 0) | |
10832 | perror_with_name (local_file); | |
10833 | } | |
10834 | ||
10835 | discard_cleanups (close_cleanup); | |
df39ea25 | 10836 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10837 | remote_hostio_error (remote_errno); |
10838 | ||
10839 | if (from_tty) | |
10840 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10841 | do_cleanups (back_to); | |
10842 | } | |
10843 | ||
10844 | void | |
10845 | remote_file_delete (const char *remote_file, int from_tty) | |
10846 | { | |
10847 | int retcode, remote_errno; | |
5d93a237 | 10848 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10849 | |
5d93a237 | 10850 | if (!rs->remote_desc) |
a6b151f1 DJ |
10851 | error (_("command can only be used with remote target")); |
10852 | ||
dbbca37d | 10853 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 10854 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
10855 | if (retcode == -1) |
10856 | remote_hostio_error (remote_errno); | |
10857 | ||
10858 | if (from_tty) | |
10859 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10860 | } | |
10861 | ||
10862 | static void | |
10863 | remote_put_command (char *args, int from_tty) | |
10864 | { | |
10865 | struct cleanup *back_to; | |
10866 | char **argv; | |
10867 | ||
d1a41061 PP |
10868 | if (args == NULL) |
10869 | error_no_arg (_("file to put")); | |
10870 | ||
10871 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10872 | back_to = make_cleanup_freeargv (argv); |
10873 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10874 | error (_("Invalid parameters to remote put")); | |
10875 | ||
10876 | remote_file_put (argv[0], argv[1], from_tty); | |
10877 | ||
10878 | do_cleanups (back_to); | |
10879 | } | |
10880 | ||
10881 | static void | |
10882 | remote_get_command (char *args, int from_tty) | |
10883 | { | |
10884 | struct cleanup *back_to; | |
10885 | char **argv; | |
10886 | ||
d1a41061 PP |
10887 | if (args == NULL) |
10888 | error_no_arg (_("file to get")); | |
10889 | ||
10890 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10891 | back_to = make_cleanup_freeargv (argv); |
10892 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10893 | error (_("Invalid parameters to remote get")); | |
10894 | ||
10895 | remote_file_get (argv[0], argv[1], from_tty); | |
10896 | ||
10897 | do_cleanups (back_to); | |
10898 | } | |
10899 | ||
10900 | static void | |
10901 | remote_delete_command (char *args, int from_tty) | |
10902 | { | |
10903 | struct cleanup *back_to; | |
10904 | char **argv; | |
10905 | ||
d1a41061 PP |
10906 | if (args == NULL) |
10907 | error_no_arg (_("file to delete")); | |
10908 | ||
10909 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10910 | back_to = make_cleanup_freeargv (argv); |
10911 | if (argv[0] == NULL || argv[1] != NULL) | |
10912 | error (_("Invalid parameters to remote delete")); | |
10913 | ||
10914 | remote_file_delete (argv[0], from_tty); | |
10915 | ||
10916 | do_cleanups (back_to); | |
10917 | } | |
10918 | ||
10919 | static void | |
10920 | remote_command (char *args, int from_tty) | |
10921 | { | |
635c7e8a | 10922 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
10923 | } |
10924 | ||
b2175913 | 10925 | static int |
19db3e69 | 10926 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10927 | { |
4082afcc PA |
10928 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
10929 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
10930 | return 1; |
10931 | else | |
10932 | return 0; | |
b2175913 MS |
10933 | } |
10934 | ||
74531fed | 10935 | static int |
2a9a2795 | 10936 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10937 | { |
10938 | return 1; | |
10939 | } | |
10940 | ||
03583c20 | 10941 | static int |
2bfc0540 | 10942 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10943 | { |
10944 | /* Only supported in extended mode. */ | |
10945 | return 0; | |
10946 | } | |
10947 | ||
8a305172 | 10948 | static int |
86ce2668 | 10949 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10950 | { |
10951 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10952 | |
901f9912 UW |
10953 | /* Only extended-remote handles being attached to multiple |
10954 | processes, even though plain remote can use the multi-process | |
10955 | thread id extensions, so that GDB knows the target process's | |
10956 | PID. */ | |
10957 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10958 | } |
10959 | ||
70221824 | 10960 | static int |
782b2b07 SS |
10961 | remote_supports_cond_tracepoints (void) |
10962 | { | |
4082afcc | 10963 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
10964 | } |
10965 | ||
3788aec7 | 10966 | static int |
efcc2da7 | 10967 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 10968 | { |
4082afcc | 10969 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
10970 | } |
10971 | ||
70221824 | 10972 | static int |
7a697b8d SS |
10973 | remote_supports_fast_tracepoints (void) |
10974 | { | |
4082afcc | 10975 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
10976 | } |
10977 | ||
0fb4aa4b PA |
10978 | static int |
10979 | remote_supports_static_tracepoints (void) | |
10980 | { | |
4082afcc | 10981 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
10982 | } |
10983 | ||
1e4d1764 YQ |
10984 | static int |
10985 | remote_supports_install_in_trace (void) | |
10986 | { | |
4082afcc | 10987 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
10988 | } |
10989 | ||
d248b706 | 10990 | static int |
7d178d6a | 10991 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 10992 | { |
4082afcc PA |
10993 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
10994 | == PACKET_ENABLE); | |
d248b706 KY |
10995 | } |
10996 | ||
3065dfb6 | 10997 | static int |
6de37a3a | 10998 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 10999 | { |
4082afcc | 11000 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11001 | } |
11002 | ||
d3ce09f5 | 11003 | static int |
78eff0ec | 11004 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11005 | { |
4082afcc | 11006 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11007 | } |
11008 | ||
35b1e5cc | 11009 | static void |
ecae04e1 | 11010 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11011 | { |
11012 | putpkt ("QTinit"); | |
11013 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11014 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11015 | error (_("Target does not support this command.")); |
11016 | } | |
11017 | ||
11018 | static void free_actions_list (char **actions_list); | |
11019 | static void free_actions_list_cleanup_wrapper (void *); | |
11020 | static void | |
11021 | free_actions_list_cleanup_wrapper (void *al) | |
11022 | { | |
11023 | free_actions_list (al); | |
11024 | } | |
11025 | ||
11026 | static void | |
11027 | free_actions_list (char **actions_list) | |
11028 | { | |
11029 | int ndx; | |
11030 | ||
11031 | if (actions_list == 0) | |
11032 | return; | |
11033 | ||
11034 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11035 | xfree (actions_list[ndx]); | |
11036 | ||
11037 | xfree (actions_list); | |
11038 | } | |
11039 | ||
409873ef SS |
11040 | /* Recursive routine to walk through command list including loops, and |
11041 | download packets for each command. */ | |
11042 | ||
11043 | static void | |
11044 | remote_download_command_source (int num, ULONGEST addr, | |
11045 | struct command_line *cmds) | |
11046 | { | |
11047 | struct remote_state *rs = get_remote_state (); | |
11048 | struct command_line *cmd; | |
11049 | ||
11050 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11051 | { | |
0df8b418 | 11052 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11053 | strcpy (rs->buf, "QTDPsrc:"); |
11054 | encode_source_string (num, addr, "cmd", cmd->line, | |
11055 | rs->buf + strlen (rs->buf), | |
11056 | rs->buf_size - strlen (rs->buf)); | |
11057 | putpkt (rs->buf); | |
11058 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11059 | if (strcmp (target_buf, "OK")) | |
11060 | warning (_("Target does not support source download.")); | |
11061 | ||
11062 | if (cmd->control_type == while_control | |
11063 | || cmd->control_type == while_stepping_control) | |
11064 | { | |
11065 | remote_download_command_source (num, addr, *cmd->body_list); | |
11066 | ||
0df8b418 | 11067 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11068 | strcpy (rs->buf, "QTDPsrc:"); |
11069 | encode_source_string (num, addr, "cmd", "end", | |
11070 | rs->buf + strlen (rs->buf), | |
11071 | rs->buf_size - strlen (rs->buf)); | |
11072 | putpkt (rs->buf); | |
11073 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11074 | if (strcmp (target_buf, "OK")) | |
11075 | warning (_("Target does not support source download.")); | |
11076 | } | |
11077 | } | |
11078 | } | |
11079 | ||
35b1e5cc | 11080 | static void |
548f7808 | 11081 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11082 | { |
bba74b36 | 11083 | #define BUF_SIZE 2048 |
e8ba3115 | 11084 | |
35b1e5cc | 11085 | CORE_ADDR tpaddr; |
409873ef | 11086 | char addrbuf[40]; |
bba74b36 | 11087 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11088 | char **tdp_actions; |
11089 | char **stepping_actions; | |
11090 | int ndx; | |
11091 | struct cleanup *old_chain = NULL; | |
11092 | struct agent_expr *aexpr; | |
11093 | struct cleanup *aexpr_chain = NULL; | |
11094 | char *pkt; | |
e8ba3115 | 11095 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11096 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11097 | |
dc673c81 | 11098 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11099 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11100 | tdp_actions); | |
11101 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11102 | stepping_actions); | |
11103 | ||
11104 | tpaddr = loc->address; | |
11105 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11106 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11107 | addrbuf, /* address */ | |
11108 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11109 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11110 | /* Fast tracepoints are mostly handled by the target, but we can |
11111 | tell the target how big of an instruction block should be moved | |
11112 | around. */ | |
11113 | if (b->type == bp_fast_tracepoint) | |
11114 | { | |
11115 | /* Only test for support at download time; we may not know | |
11116 | target capabilities at definition time. */ | |
11117 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11118 | { |
6b940e6a PL |
11119 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11120 | NULL)) | |
bba74b36 | 11121 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11122 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11123 | else |
e8ba3115 YQ |
11124 | /* If it passed validation at definition but fails now, |
11125 | something is very wrong. */ | |
11126 | internal_error (__FILE__, __LINE__, | |
11127 | _("Fast tracepoint not " | |
11128 | "valid during download")); | |
35b1e5cc | 11129 | } |
e8ba3115 YQ |
11130 | else |
11131 | /* Fast tracepoints are functionally identical to regular | |
11132 | tracepoints, so don't take lack of support as a reason to | |
11133 | give up on the trace run. */ | |
11134 | warning (_("Target does not support fast tracepoints, " | |
11135 | "downloading %d as regular tracepoint"), b->number); | |
11136 | } | |
11137 | else if (b->type == bp_static_tracepoint) | |
11138 | { | |
11139 | /* Only test for support at download time; we may not know | |
11140 | target capabilities at definition time. */ | |
11141 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11142 | { |
e8ba3115 | 11143 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11144 | |
e8ba3115 YQ |
11145 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11146 | strcat (buf, ":S"); | |
0fb4aa4b | 11147 | else |
e8ba3115 | 11148 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11149 | } |
e8ba3115 YQ |
11150 | else |
11151 | /* Fast tracepoints are functionally identical to regular | |
11152 | tracepoints, so don't take lack of support as a reason | |
11153 | to give up on the trace run. */ | |
11154 | error (_("Target does not support static tracepoints")); | |
11155 | } | |
11156 | /* If the tracepoint has a conditional, make it into an agent | |
11157 | expression and append to the definition. */ | |
11158 | if (loc->cond) | |
11159 | { | |
11160 | /* Only test support at download time, we may not know target | |
11161 | capabilities at definition time. */ | |
11162 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11163 | { |
e8ba3115 YQ |
11164 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11165 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11166 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11167 | aexpr->len); | |
e8ba3115 YQ |
11168 | pkt = buf + strlen (buf); |
11169 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11170 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11171 | *pkt = '\0'; | |
11172 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11173 | } |
e8ba3115 YQ |
11174 | else |
11175 | warning (_("Target does not support conditional tracepoints, " | |
11176 | "ignoring tp %d cond"), b->number); | |
11177 | } | |
35b1e5cc | 11178 | |
d9b3f62e | 11179 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11180 | strcat (buf, "-"); |
11181 | putpkt (buf); | |
11182 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11183 | if (strcmp (target_buf, "OK")) | |
11184 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11185 | |
e8ba3115 YQ |
11186 | /* do_single_steps (t); */ |
11187 | if (tdp_actions) | |
11188 | { | |
11189 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11190 | { |
e8ba3115 | 11191 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11192 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11193 | b->number, addrbuf, /* address */ | |
11194 | tdp_actions[ndx], | |
11195 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11196 | ? '-' : 0)); | |
e8ba3115 YQ |
11197 | putpkt (buf); |
11198 | remote_get_noisy_reply (&target_buf, | |
11199 | &target_buf_size); | |
11200 | if (strcmp (target_buf, "OK")) | |
11201 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11202 | } |
e8ba3115 YQ |
11203 | } |
11204 | if (stepping_actions) | |
11205 | { | |
11206 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11207 | { |
e8ba3115 | 11208 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11209 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11210 | b->number, addrbuf, /* address */ | |
11211 | ((ndx == 0) ? "S" : ""), | |
11212 | stepping_actions[ndx], | |
11213 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11214 | putpkt (buf); |
11215 | remote_get_noisy_reply (&target_buf, | |
11216 | &target_buf_size); | |
11217 | if (strcmp (target_buf, "OK")) | |
11218 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11219 | } |
e8ba3115 | 11220 | } |
409873ef | 11221 | |
4082afcc | 11222 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 YQ |
11223 | { |
11224 | if (b->addr_string) | |
409873ef | 11225 | { |
e8ba3115 YQ |
11226 | strcpy (buf, "QTDPsrc:"); |
11227 | encode_source_string (b->number, loc->address, | |
11228 | "at", b->addr_string, buf + strlen (buf), | |
11229 | 2048 - strlen (buf)); | |
409873ef | 11230 | |
e8ba3115 YQ |
11231 | putpkt (buf); |
11232 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11233 | if (strcmp (target_buf, "OK")) | |
11234 | warning (_("Target does not support source download.")); | |
409873ef | 11235 | } |
e8ba3115 YQ |
11236 | if (b->cond_string) |
11237 | { | |
11238 | strcpy (buf, "QTDPsrc:"); | |
11239 | encode_source_string (b->number, loc->address, | |
11240 | "cond", b->cond_string, buf + strlen (buf), | |
11241 | 2048 - strlen (buf)); | |
11242 | putpkt (buf); | |
11243 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11244 | if (strcmp (target_buf, "OK")) | |
11245 | warning (_("Target does not support source download.")); | |
11246 | } | |
11247 | remote_download_command_source (b->number, loc->address, | |
11248 | breakpoint_commands (b)); | |
35b1e5cc | 11249 | } |
e8ba3115 YQ |
11250 | |
11251 | do_cleanups (old_chain); | |
35b1e5cc SS |
11252 | } |
11253 | ||
1e4d1764 | 11254 | static int |
a52a8357 | 11255 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11256 | { |
1e51243a PA |
11257 | struct remote_state *rs = get_remote_state (); |
11258 | struct trace_status *ts; | |
11259 | int status; | |
11260 | ||
11261 | /* Don't try to install tracepoints until we've relocated our | |
11262 | symbols, and fetched and merged the target's tracepoint list with | |
11263 | ours. */ | |
11264 | if (rs->starting_up) | |
11265 | return 0; | |
11266 | ||
11267 | ts = current_trace_status (); | |
8bd200f1 | 11268 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11269 | |
11270 | if (status == -1 || !ts->running_known || !ts->running) | |
11271 | return 0; | |
11272 | ||
11273 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11274 | installing tracepoint in trace, we have to return. */ | |
11275 | if (!remote_supports_install_in_trace ()) | |
11276 | return 0; | |
11277 | ||
11278 | return 1; | |
11279 | } | |
11280 | ||
11281 | ||
35b1e5cc | 11282 | static void |
559d2b81 TT |
11283 | remote_download_trace_state_variable (struct target_ops *self, |
11284 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11285 | { |
11286 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11287 | char *p; |
35b1e5cc | 11288 | |
bba74b36 YQ |
11289 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11290 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11291 | tsv->builtin); | |
00bf0b85 SS |
11292 | p = rs->buf + strlen (rs->buf); |
11293 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11294 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11295 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11296 | *p++ = '\0'; |
35b1e5cc SS |
11297 | putpkt (rs->buf); |
11298 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11299 | if (*target_buf == '\0') |
11300 | error (_("Target does not support this command.")); | |
11301 | if (strcmp (target_buf, "OK") != 0) | |
11302 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11303 | } |
11304 | ||
d248b706 | 11305 | static void |
46670d57 TT |
11306 | remote_enable_tracepoint (struct target_ops *self, |
11307 | struct bp_location *location) | |
d248b706 KY |
11308 | { |
11309 | struct remote_state *rs = get_remote_state (); | |
11310 | char addr_buf[40]; | |
11311 | ||
11312 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11313 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11314 | location->owner->number, addr_buf); | |
d248b706 KY |
11315 | putpkt (rs->buf); |
11316 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11317 | if (*rs->buf == '\0') | |
11318 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11319 | if (strcmp (rs->buf, "OK") != 0) | |
11320 | error (_("Error on target while enabling tracepoint.")); | |
11321 | } | |
11322 | ||
11323 | static void | |
780b049c TT |
11324 | remote_disable_tracepoint (struct target_ops *self, |
11325 | struct bp_location *location) | |
d248b706 KY |
11326 | { |
11327 | struct remote_state *rs = get_remote_state (); | |
11328 | char addr_buf[40]; | |
11329 | ||
11330 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11331 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11332 | location->owner->number, addr_buf); | |
d248b706 KY |
11333 | putpkt (rs->buf); |
11334 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11335 | if (*rs->buf == '\0') | |
11336 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11337 | if (strcmp (rs->buf, "OK") != 0) | |
11338 | error (_("Error on target while disabling tracepoint.")); | |
11339 | } | |
11340 | ||
35b1e5cc | 11341 | static void |
583f9a86 | 11342 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
11343 | { |
11344 | asection *s; | |
81b9b86e | 11345 | bfd *abfd = NULL; |
35b1e5cc | 11346 | bfd_size_type size; |
608bcef2 | 11347 | bfd_vma vma; |
35b1e5cc | 11348 | int anysecs = 0; |
c2fa21f1 | 11349 | int offset = 0; |
35b1e5cc SS |
11350 | |
11351 | if (!exec_bfd) | |
11352 | return; /* No information to give. */ | |
11353 | ||
11354 | strcpy (target_buf, "QTro"); | |
9779ab84 | 11355 | offset = strlen (target_buf); |
35b1e5cc SS |
11356 | for (s = exec_bfd->sections; s; s = s->next) |
11357 | { | |
11358 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 11359 | int sec_length; |
35b1e5cc SS |
11360 | |
11361 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 11362 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
11363 | (s->flags & SEC_READONLY) == 0) |
11364 | continue; | |
11365 | ||
11366 | anysecs = 1; | |
81b9b86e | 11367 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 11368 | size = bfd_get_section_size (s); |
608bcef2 HZ |
11369 | sprintf_vma (tmp1, vma); |
11370 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
11371 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
11372 | if (offset + sec_length + 1 > target_buf_size) | |
11373 | { | |
4082afcc | 11374 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 11375 | warning (_("\ |
c2fa21f1 HZ |
11376 | Too many sections for read-only sections definition packet.")); |
11377 | break; | |
11378 | } | |
bba74b36 YQ |
11379 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11380 | tmp1, tmp2); | |
c2fa21f1 | 11381 | offset += sec_length; |
35b1e5cc SS |
11382 | } |
11383 | if (anysecs) | |
11384 | { | |
11385 | putpkt (target_buf); | |
11386 | getpkt (&target_buf, &target_buf_size, 0); | |
11387 | } | |
11388 | } | |
11389 | ||
11390 | static void | |
e2d1aae3 | 11391 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11392 | { |
11393 | putpkt ("QTStart"); | |
11394 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11395 | if (*target_buf == '\0') |
11396 | error (_("Target does not support this command.")); | |
11397 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11398 | error (_("Bogus reply from target: %s"), target_buf); |
11399 | } | |
11400 | ||
11401 | static int | |
8bd200f1 | 11402 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11403 | { |
953b98d1 | 11404 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11405 | char *p = NULL; |
0df8b418 | 11406 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11407 | extern int trace_regblock_size; |
bd3eecc3 PA |
11408 | enum packet_result result; |
11409 | ||
4082afcc | 11410 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11411 | return -1; |
a744cf53 | 11412 | |
00bf0b85 SS |
11413 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11414 | ||
049dc89b JK |
11415 | putpkt ("qTStatus"); |
11416 | ||
492d29ea | 11417 | TRY |
67f41397 JK |
11418 | { |
11419 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11420 | } | |
492d29ea | 11421 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11422 | { |
598d3636 JK |
11423 | if (ex.error != TARGET_CLOSE_ERROR) |
11424 | { | |
11425 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11426 | return -1; | |
11427 | } | |
11428 | throw_exception (ex); | |
67f41397 | 11429 | } |
492d29ea | 11430 | END_CATCH |
00bf0b85 | 11431 | |
bd3eecc3 PA |
11432 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11433 | ||
00bf0b85 | 11434 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11435 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11436 | return -1; |
35b1e5cc | 11437 | |
00bf0b85 | 11438 | /* We're working with a live target. */ |
f5911ea1 | 11439 | ts->filename = NULL; |
00bf0b85 | 11440 | |
00bf0b85 | 11441 | if (*p++ != 'T') |
35b1e5cc SS |
11442 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11443 | ||
84cebc4a YQ |
11444 | /* Function 'parse_trace_status' sets default value of each field of |
11445 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11446 | parse_trace_status (p, ts); |
11447 | ||
11448 | return ts->running; | |
35b1e5cc SS |
11449 | } |
11450 | ||
70221824 | 11451 | static void |
db90e85c | 11452 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11453 | struct uploaded_tp *utp) |
11454 | { | |
11455 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11456 | char *reply; |
11457 | struct bp_location *loc; | |
11458 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11459 | size_t size = get_remote_packet_size (); |
f196051f SS |
11460 | |
11461 | if (tp) | |
11462 | { | |
11463 | tp->base.hit_count = 0; | |
11464 | tp->traceframe_usage = 0; | |
11465 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11466 | { | |
11467 | /* If the tracepoint was never downloaded, don't go asking for | |
11468 | any status. */ | |
11469 | if (tp->number_on_target == 0) | |
11470 | continue; | |
bba74b36 YQ |
11471 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11472 | phex_nz (loc->address, 0)); | |
f196051f SS |
11473 | putpkt (rs->buf); |
11474 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11475 | if (reply && *reply) | |
11476 | { | |
11477 | if (*reply == 'V') | |
11478 | parse_tracepoint_status (reply + 1, bp, utp); | |
11479 | } | |
11480 | } | |
11481 | } | |
11482 | else if (utp) | |
11483 | { | |
11484 | utp->hit_count = 0; | |
11485 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11486 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11487 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11488 | putpkt (rs->buf); |
11489 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11490 | if (reply && *reply) | |
11491 | { | |
11492 | if (*reply == 'V') | |
11493 | parse_tracepoint_status (reply + 1, bp, utp); | |
11494 | } | |
11495 | } | |
11496 | } | |
11497 | ||
35b1e5cc | 11498 | static void |
74499f1b | 11499 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11500 | { |
11501 | putpkt ("QTStop"); | |
11502 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11503 | if (*target_buf == '\0') |
11504 | error (_("Target does not support this command.")); | |
11505 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11506 | error (_("Bogus reply from target: %s"), target_buf); |
11507 | } | |
11508 | ||
11509 | static int | |
bd4c6793 TT |
11510 | remote_trace_find (struct target_ops *self, |
11511 | enum trace_find_type type, int num, | |
cc5925ad | 11512 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11513 | int *tpp) |
11514 | { | |
11515 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11516 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11517 | char *p, *reply; |
11518 | int target_frameno = -1, target_tracept = -1; | |
11519 | ||
e6e4e701 PA |
11520 | /* Lookups other than by absolute frame number depend on the current |
11521 | trace selected, so make sure it is correct on the remote end | |
11522 | first. */ | |
11523 | if (type != tfind_number) | |
11524 | set_remote_traceframe (); | |
11525 | ||
35b1e5cc SS |
11526 | p = rs->buf; |
11527 | strcpy (p, "QTFrame:"); | |
11528 | p = strchr (p, '\0'); | |
11529 | switch (type) | |
11530 | { | |
11531 | case tfind_number: | |
bba74b36 | 11532 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11533 | break; |
11534 | case tfind_pc: | |
bba74b36 | 11535 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11536 | break; |
11537 | case tfind_tp: | |
bba74b36 | 11538 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11539 | break; |
11540 | case tfind_range: | |
bba74b36 YQ |
11541 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11542 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11543 | break; |
11544 | case tfind_outside: | |
bba74b36 YQ |
11545 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11546 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11547 | break; |
11548 | default: | |
9b20d036 | 11549 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11550 | } |
11551 | ||
11552 | putpkt (rs->buf); | |
2f65bcb7 | 11553 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11554 | if (*reply == '\0') |
11555 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11556 | |
11557 | while (reply && *reply) | |
11558 | switch (*reply) | |
11559 | { | |
11560 | case 'F': | |
f197e0f1 VP |
11561 | p = ++reply; |
11562 | target_frameno = (int) strtol (p, &reply, 16); | |
11563 | if (reply == p) | |
11564 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11565 | /* Don't update our remote traceframe number cache on failure |
11566 | to select a remote traceframe. */ | |
f197e0f1 VP |
11567 | if (target_frameno == -1) |
11568 | return -1; | |
35b1e5cc SS |
11569 | break; |
11570 | case 'T': | |
f197e0f1 VP |
11571 | p = ++reply; |
11572 | target_tracept = (int) strtol (p, &reply, 16); | |
11573 | if (reply == p) | |
11574 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11575 | break; |
11576 | case 'O': /* "OK"? */ | |
11577 | if (reply[1] == 'K' && reply[2] == '\0') | |
11578 | reply += 2; | |
11579 | else | |
11580 | error (_("Bogus reply from target: %s"), reply); | |
11581 | break; | |
11582 | default: | |
11583 | error (_("Bogus reply from target: %s"), reply); | |
11584 | } | |
11585 | if (tpp) | |
11586 | *tpp = target_tracept; | |
e6e4e701 | 11587 | |
262e1174 | 11588 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11589 | return target_frameno; |
11590 | } | |
11591 | ||
11592 | static int | |
4011015b TT |
11593 | remote_get_trace_state_variable_value (struct target_ops *self, |
11594 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11595 | { |
11596 | struct remote_state *rs = get_remote_state (); | |
11597 | char *reply; | |
11598 | ULONGEST uval; | |
11599 | ||
e6e4e701 PA |
11600 | set_remote_traceframe (); |
11601 | ||
bba74b36 | 11602 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11603 | putpkt (rs->buf); |
11604 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11605 | if (reply && *reply) | |
11606 | { | |
11607 | if (*reply == 'V') | |
11608 | { | |
11609 | unpack_varlen_hex (reply + 1, &uval); | |
11610 | *val = (LONGEST) uval; | |
11611 | return 1; | |
11612 | } | |
11613 | } | |
11614 | return 0; | |
11615 | } | |
11616 | ||
00bf0b85 | 11617 | static int |
dc3decaf | 11618 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
11619 | { |
11620 | struct remote_state *rs = get_remote_state (); | |
11621 | char *p, *reply; | |
11622 | ||
11623 | p = rs->buf; | |
11624 | strcpy (p, "QTSave:"); | |
11625 | p += strlen (p); | |
11626 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11627 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 11628 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
11629 | *p++ = '\0'; |
11630 | putpkt (rs->buf); | |
ad91cd99 | 11631 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11632 | if (*reply == '\0') |
ad91cd99 PA |
11633 | error (_("Target does not support this command.")); |
11634 | if (strcmp (reply, "OK") != 0) | |
11635 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11636 | return 0; |
11637 | } | |
11638 | ||
11639 | /* This is basically a memory transfer, but needs to be its own packet | |
11640 | because we don't know how the target actually organizes its trace | |
11641 | memory, plus we want to be able to ask for as much as possible, but | |
11642 | not be unhappy if we don't get as much as we ask for. */ | |
11643 | ||
11644 | static LONGEST | |
88ee6f45 TT |
11645 | remote_get_raw_trace_data (struct target_ops *self, |
11646 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
11647 | { |
11648 | struct remote_state *rs = get_remote_state (); | |
11649 | char *reply; | |
11650 | char *p; | |
11651 | int rslt; | |
11652 | ||
11653 | p = rs->buf; | |
11654 | strcpy (p, "qTBuffer:"); | |
11655 | p += strlen (p); | |
11656 | p += hexnumstr (p, offset); | |
11657 | *p++ = ','; | |
11658 | p += hexnumstr (p, len); | |
11659 | *p++ = '\0'; | |
11660 | ||
11661 | putpkt (rs->buf); | |
11662 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11663 | if (reply && *reply) | |
11664 | { | |
11665 | /* 'l' by itself means we're at the end of the buffer and | |
11666 | there is nothing more to get. */ | |
11667 | if (*reply == 'l') | |
11668 | return 0; | |
11669 | ||
11670 | /* Convert the reply into binary. Limit the number of bytes to | |
11671 | convert according to our passed-in buffer size, rather than | |
11672 | what was returned in the packet; if the target is | |
11673 | unexpectedly generous and gives us a bigger reply than we | |
11674 | asked for, we don't want to crash. */ | |
11675 | rslt = hex2bin (target_buf, buf, len); | |
11676 | return rslt; | |
11677 | } | |
11678 | ||
11679 | /* Something went wrong, flag as an error. */ | |
11680 | return -1; | |
11681 | } | |
11682 | ||
35b1e5cc | 11683 | static void |
37b25738 | 11684 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11685 | { |
11686 | struct remote_state *rs = get_remote_state (); | |
11687 | ||
4082afcc | 11688 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11689 | { |
ad91cd99 PA |
11690 | char *reply; |
11691 | ||
bba74b36 | 11692 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11693 | putpkt (rs->buf); |
ad91cd99 PA |
11694 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11695 | if (*reply == '\0') | |
33da3f1c | 11696 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11697 | if (strcmp (reply, "OK") != 0) |
11698 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11699 | } |
11700 | else if (val) | |
11701 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11702 | } |
11703 | ||
dc146f7c VP |
11704 | static int |
11705 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11706 | { | |
11707 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11708 | |
fe978cb0 PA |
11709 | if (info && info->priv) |
11710 | return info->priv->core; | |
dc146f7c VP |
11711 | return -1; |
11712 | } | |
11713 | ||
4daf5ac0 | 11714 | static void |
736d5b1f | 11715 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11716 | { |
11717 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11718 | char *reply; |
4daf5ac0 | 11719 | |
bba74b36 | 11720 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11721 | putpkt (rs->buf); |
ad91cd99 PA |
11722 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11723 | if (*reply == '\0') | |
4daf5ac0 | 11724 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11725 | if (strcmp (reply, "OK") != 0) |
11726 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11727 | } |
11728 | ||
b3b9301e | 11729 | static struct traceframe_info * |
a893e81f | 11730 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
11731 | { |
11732 | char *text; | |
11733 | ||
11734 | text = target_read_stralloc (¤t_target, | |
11735 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11736 | if (text != NULL) | |
11737 | { | |
11738 | struct traceframe_info *info; | |
11739 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11740 | ||
11741 | info = parse_traceframe_info (text); | |
11742 | do_cleanups (back_to); | |
11743 | return info; | |
11744 | } | |
11745 | ||
11746 | return NULL; | |
11747 | } | |
11748 | ||
405f8e94 SS |
11749 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11750 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11751 | if the packet is not supported, and 0 if the minimum instruction | |
11752 | length is unknown. */ | |
11753 | ||
11754 | static int | |
0e67620a | 11755 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
11756 | { |
11757 | struct remote_state *rs = get_remote_state (); | |
11758 | char *reply; | |
11759 | ||
e886a173 PA |
11760 | /* If we're not debugging a process yet, the IPA can't be |
11761 | loaded. */ | |
11762 | if (!target_has_execution) | |
11763 | return 0; | |
11764 | ||
11765 | /* Make sure the remote is pointing at the right process. */ | |
11766 | set_general_process (); | |
11767 | ||
bba74b36 | 11768 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11769 | putpkt (rs->buf); |
11770 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11771 | if (*reply == '\0') | |
11772 | return -1; | |
11773 | else | |
11774 | { | |
11775 | ULONGEST min_insn_len; | |
11776 | ||
11777 | unpack_varlen_hex (reply, &min_insn_len); | |
11778 | ||
11779 | return (int) min_insn_len; | |
11780 | } | |
11781 | } | |
11782 | ||
f6f899bf | 11783 | static void |
4da384be | 11784 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 11785 | { |
4082afcc | 11786 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
11787 | { |
11788 | struct remote_state *rs = get_remote_state (); | |
11789 | char *buf = rs->buf; | |
11790 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11791 | enum packet_result result; | |
11792 | ||
11793 | gdb_assert (val >= 0 || val == -1); | |
11794 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11795 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11796 | if (val < 0) | |
11797 | { | |
11798 | *buf++ = '-'; | |
11799 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11800 | } | |
11801 | else | |
11802 | buf += hexnumstr (buf, (ULONGEST) val); | |
11803 | ||
11804 | putpkt (rs->buf); | |
11805 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11806 | result = packet_ok (rs->buf, | |
11807 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11808 | ||
11809 | if (result != PACKET_OK) | |
11810 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11811 | } | |
11812 | } | |
11813 | ||
f196051f | 11814 | static int |
d9e68a2c TT |
11815 | remote_set_trace_notes (struct target_ops *self, |
11816 | const char *user, const char *notes, | |
ca623f82 | 11817 | const char *stop_notes) |
f196051f SS |
11818 | { |
11819 | struct remote_state *rs = get_remote_state (); | |
11820 | char *reply; | |
11821 | char *buf = rs->buf; | |
11822 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11823 | int nbytes; | |
11824 | ||
11825 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11826 | if (user) | |
11827 | { | |
11828 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11829 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11830 | buf += 2 * nbytes; |
11831 | *buf++ = ';'; | |
11832 | } | |
11833 | if (notes) | |
11834 | { | |
11835 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11836 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11837 | buf += 2 * nbytes; |
11838 | *buf++ = ';'; | |
11839 | } | |
11840 | if (stop_notes) | |
11841 | { | |
11842 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11843 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11844 | buf += 2 * nbytes; |
11845 | *buf++ = ';'; | |
11846 | } | |
11847 | /* Ensure the buffer is terminated. */ | |
11848 | *buf = '\0'; | |
11849 | ||
11850 | putpkt (rs->buf); | |
11851 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11852 | if (*reply == '\0') | |
11853 | return 0; | |
11854 | ||
11855 | if (strcmp (reply, "OK") != 0) | |
11856 | error (_("Bogus reply from target: %s"), reply); | |
11857 | ||
11858 | return 1; | |
11859 | } | |
11860 | ||
d1feda86 | 11861 | static int |
2c152180 | 11862 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 11863 | { |
4082afcc | 11864 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
11865 | { |
11866 | struct remote_state *rs = get_remote_state (); | |
11867 | ||
11868 | /* If the stub supports QAgent. */ | |
bba74b36 | 11869 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11870 | putpkt (rs->buf); |
11871 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11872 | ||
11873 | if (strcmp (rs->buf, "OK") == 0) | |
11874 | { | |
11875 | use_agent = use; | |
11876 | return 1; | |
11877 | } | |
11878 | } | |
11879 | ||
11880 | return 0; | |
11881 | } | |
11882 | ||
11883 | static int | |
fe38f897 | 11884 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 11885 | { |
4082afcc | 11886 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
11887 | } |
11888 | ||
9accd112 MM |
11889 | struct btrace_target_info |
11890 | { | |
11891 | /* The ptid of the traced thread. */ | |
11892 | ptid_t ptid; | |
f4abbc16 MM |
11893 | |
11894 | /* The obtained branch trace configuration. */ | |
11895 | struct btrace_config conf; | |
9accd112 MM |
11896 | }; |
11897 | ||
f4abbc16 MM |
11898 | /* Reset our idea of our target's btrace configuration. */ |
11899 | ||
11900 | static void | |
11901 | remote_btrace_reset (void) | |
11902 | { | |
11903 | struct remote_state *rs = get_remote_state (); | |
11904 | ||
11905 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
11906 | } | |
11907 | ||
9accd112 MM |
11908 | /* Check whether the target supports branch tracing. */ |
11909 | ||
11910 | static int | |
043c3577 | 11911 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 11912 | { |
4082afcc | 11913 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 11914 | return 0; |
4082afcc | 11915 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
11916 | return 0; |
11917 | ||
043c3577 MM |
11918 | switch (format) |
11919 | { | |
11920 | case BTRACE_FORMAT_NONE: | |
11921 | return 0; | |
11922 | ||
11923 | case BTRACE_FORMAT_BTS: | |
11924 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
11925 | |
11926 | case BTRACE_FORMAT_PT: | |
11927 | /* The trace is decoded on the host. Even if our target supports it, | |
11928 | we still need to have libipt to decode the trace. */ | |
11929 | #if defined (HAVE_LIBIPT) | |
11930 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
11931 | #else /* !defined (HAVE_LIBIPT) */ | |
11932 | return 0; | |
11933 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
11934 | } |
11935 | ||
11936 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
11937 | } |
11938 | ||
f4abbc16 MM |
11939 | /* Synchronize the configuration with the target. */ |
11940 | ||
11941 | static void | |
11942 | btrace_sync_conf (const struct btrace_config *conf) | |
11943 | { | |
d33501a5 MM |
11944 | struct packet_config *packet; |
11945 | struct remote_state *rs; | |
11946 | char *buf, *pos, *endbuf; | |
11947 | ||
11948 | rs = get_remote_state (); | |
11949 | buf = rs->buf; | |
11950 | endbuf = buf + get_remote_packet_size (); | |
11951 | ||
11952 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
11953 | if (packet_config_support (packet) == PACKET_ENABLE | |
11954 | && conf->bts.size != rs->btrace_config.bts.size) | |
11955 | { | |
11956 | pos = buf; | |
11957 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
11958 | conf->bts.size); | |
11959 | ||
11960 | putpkt (buf); | |
11961 | getpkt (&buf, &rs->buf_size, 0); | |
11962 | ||
11963 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
11964 | { | |
11965 | if (buf[0] == 'E' && buf[1] == '.') | |
11966 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
11967 | else | |
11968 | error (_("Failed to configure the BTS buffer size.")); | |
11969 | } | |
11970 | ||
11971 | rs->btrace_config.bts.size = conf->bts.size; | |
11972 | } | |
b20a6524 MM |
11973 | |
11974 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
11975 | if (packet_config_support (packet) == PACKET_ENABLE | |
11976 | && conf->pt.size != rs->btrace_config.pt.size) | |
11977 | { | |
11978 | pos = buf; | |
11979 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
11980 | conf->pt.size); | |
11981 | ||
11982 | putpkt (buf); | |
11983 | getpkt (&buf, &rs->buf_size, 0); | |
11984 | ||
11985 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
11986 | { | |
11987 | if (buf[0] == 'E' && buf[1] == '.') | |
11988 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
11989 | else | |
11990 | error (_("Failed to configure the trace buffer size.")); | |
11991 | } | |
11992 | ||
11993 | rs->btrace_config.pt.size = conf->pt.size; | |
11994 | } | |
f4abbc16 MM |
11995 | } |
11996 | ||
11997 | /* Read the current thread's btrace configuration from the target and | |
11998 | store it into CONF. */ | |
11999 | ||
12000 | static void | |
12001 | btrace_read_config (struct btrace_config *conf) | |
12002 | { | |
12003 | char *xml; | |
12004 | ||
12005 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12006 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12007 | if (xml != NULL) |
12008 | { | |
12009 | struct cleanup *cleanup; | |
12010 | ||
12011 | cleanup = make_cleanup (xfree, xml); | |
12012 | parse_xml_btrace_conf (conf, xml); | |
12013 | do_cleanups (cleanup); | |
12014 | } | |
12015 | } | |
12016 | ||
9accd112 MM |
12017 | /* Enable branch tracing. */ |
12018 | ||
12019 | static struct btrace_target_info * | |
f4abbc16 MM |
12020 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12021 | const struct btrace_config *conf) | |
9accd112 MM |
12022 | { |
12023 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12024 | struct packet_config *packet = NULL; |
9accd112 MM |
12025 | struct remote_state *rs = get_remote_state (); |
12026 | char *buf = rs->buf; | |
12027 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12028 | ||
b20a6524 MM |
12029 | switch (conf->format) |
12030 | { | |
12031 | case BTRACE_FORMAT_BTS: | |
12032 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12033 | break; | |
12034 | ||
12035 | case BTRACE_FORMAT_PT: | |
12036 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12037 | break; | |
12038 | } | |
12039 | ||
12040 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12041 | error (_("Target does not support branch tracing.")); |
12042 | ||
f4abbc16 MM |
12043 | btrace_sync_conf (conf); |
12044 | ||
9accd112 MM |
12045 | set_general_thread (ptid); |
12046 | ||
12047 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12048 | putpkt (rs->buf); | |
12049 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12050 | ||
12051 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12052 | { | |
12053 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12054 | error (_("Could not enable branch tracing for %s: %s"), | |
12055 | target_pid_to_str (ptid), rs->buf + 2); | |
12056 | else | |
12057 | error (_("Could not enable branch tracing for %s."), | |
12058 | target_pid_to_str (ptid)); | |
12059 | } | |
12060 | ||
12061 | tinfo = xzalloc (sizeof (*tinfo)); | |
12062 | tinfo->ptid = ptid; | |
12063 | ||
f4abbc16 MM |
12064 | /* If we fail to read the configuration, we lose some information, but the |
12065 | tracing itself is not impacted. */ | |
492d29ea PA |
12066 | TRY |
12067 | { | |
12068 | btrace_read_config (&tinfo->conf); | |
12069 | } | |
12070 | CATCH (err, RETURN_MASK_ERROR) | |
12071 | { | |
12072 | if (err.message != NULL) | |
12073 | warning ("%s", err.message); | |
12074 | } | |
12075 | END_CATCH | |
f4abbc16 | 12076 | |
9accd112 MM |
12077 | return tinfo; |
12078 | } | |
12079 | ||
12080 | /* Disable branch tracing. */ | |
12081 | ||
12082 | static void | |
25e95349 TT |
12083 | remote_disable_btrace (struct target_ops *self, |
12084 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12085 | { |
12086 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12087 | struct remote_state *rs = get_remote_state (); | |
12088 | char *buf = rs->buf; | |
12089 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12090 | ||
4082afcc | 12091 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12092 | error (_("Target does not support branch tracing.")); |
12093 | ||
12094 | set_general_thread (tinfo->ptid); | |
12095 | ||
12096 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12097 | putpkt (rs->buf); | |
12098 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12099 | ||
12100 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12101 | { | |
12102 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12103 | error (_("Could not disable branch tracing for %s: %s"), | |
12104 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12105 | else | |
12106 | error (_("Could not disable branch tracing for %s."), | |
12107 | target_pid_to_str (tinfo->ptid)); | |
12108 | } | |
12109 | ||
12110 | xfree (tinfo); | |
12111 | } | |
12112 | ||
12113 | /* Teardown branch tracing. */ | |
12114 | ||
12115 | static void | |
1777056d TT |
12116 | remote_teardown_btrace (struct target_ops *self, |
12117 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12118 | { |
12119 | /* We must not talk to the target during teardown. */ | |
12120 | xfree (tinfo); | |
12121 | } | |
12122 | ||
12123 | /* Read the branch trace. */ | |
12124 | ||
969c39fb | 12125 | static enum btrace_error |
39c49f83 | 12126 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12127 | struct btrace_data *btrace, |
969c39fb | 12128 | struct btrace_target_info *tinfo, |
9accd112 MM |
12129 | enum btrace_read_type type) |
12130 | { | |
12131 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12132 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12133 | struct cleanup *cleanup; |
9accd112 MM |
12134 | const char *annex; |
12135 | char *xml; | |
12136 | ||
4082afcc | 12137 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12138 | error (_("Target does not support branch tracing.")); |
12139 | ||
12140 | #if !defined(HAVE_LIBEXPAT) | |
12141 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12142 | #endif | |
12143 | ||
12144 | switch (type) | |
12145 | { | |
864089d2 | 12146 | case BTRACE_READ_ALL: |
9accd112 MM |
12147 | annex = "all"; |
12148 | break; | |
864089d2 | 12149 | case BTRACE_READ_NEW: |
9accd112 MM |
12150 | annex = "new"; |
12151 | break; | |
969c39fb MM |
12152 | case BTRACE_READ_DELTA: |
12153 | annex = "delta"; | |
12154 | break; | |
9accd112 MM |
12155 | default: |
12156 | internal_error (__FILE__, __LINE__, | |
12157 | _("Bad branch tracing read type: %u."), | |
12158 | (unsigned int) type); | |
12159 | } | |
12160 | ||
12161 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12162 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12163 | if (xml == NULL) |
12164 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12165 | |
969c39fb | 12166 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12167 | parse_xml_btrace (btrace, xml); |
969c39fb | 12168 | do_cleanups (cleanup); |
9accd112 | 12169 | |
969c39fb | 12170 | return BTRACE_ERR_NONE; |
9accd112 MM |
12171 | } |
12172 | ||
f4abbc16 MM |
12173 | static const struct btrace_config * |
12174 | remote_btrace_conf (struct target_ops *self, | |
12175 | const struct btrace_target_info *tinfo) | |
12176 | { | |
12177 | return &tinfo->conf; | |
12178 | } | |
12179 | ||
ced63ec0 | 12180 | static int |
5436ff03 | 12181 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12182 | { |
4082afcc PA |
12183 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12184 | == PACKET_ENABLE); | |
ced63ec0 GB |
12185 | } |
12186 | ||
9dd130a0 TT |
12187 | /* Implementation of to_load. */ |
12188 | ||
12189 | static void | |
9cbe5fff | 12190 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12191 | { |
12192 | generic_load (name, from_tty); | |
12193 | } | |
12194 | ||
c78fa86a GB |
12195 | /* Accepts an integer PID; returns a string representing a file that |
12196 | can be opened on the remote side to get the symbols for the child | |
12197 | process. Returns NULL if the operation is not supported. */ | |
12198 | ||
12199 | static char * | |
12200 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12201 | { | |
12202 | static char *filename = NULL; | |
835205d0 GB |
12203 | struct inferior *inf; |
12204 | char *annex = NULL; | |
c78fa86a GB |
12205 | |
12206 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12207 | return NULL; | |
12208 | ||
12209 | if (filename != NULL) | |
12210 | xfree (filename); | |
12211 | ||
835205d0 GB |
12212 | inf = find_inferior_pid (pid); |
12213 | if (inf == NULL) | |
12214 | internal_error (__FILE__, __LINE__, | |
12215 | _("not currently attached to process %d"), pid); | |
12216 | ||
12217 | if (!inf->fake_pid_p) | |
12218 | { | |
12219 | const int annex_size = 9; | |
12220 | ||
12221 | annex = alloca (annex_size); | |
12222 | xsnprintf (annex, annex_size, "%x", pid); | |
12223 | } | |
12224 | ||
c78fa86a GB |
12225 | filename = target_read_stralloc (¤t_target, |
12226 | TARGET_OBJECT_EXEC_FILE, annex); | |
12227 | ||
12228 | return filename; | |
12229 | } | |
12230 | ||
c906108c | 12231 | static void |
fba45db2 | 12232 | init_remote_ops (void) |
c906108c | 12233 | { |
c5aa993b | 12234 | remote_ops.to_shortname = "remote"; |
c906108c | 12235 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12236 | remote_ops.to_doc = |
c906108c | 12237 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12238 | Specify the serial device it is connected to\n\ |
12239 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12240 | remote_ops.to_open = remote_open; |
12241 | remote_ops.to_close = remote_close; | |
c906108c | 12242 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12243 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12244 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12245 | remote_ops.to_wait = remote_wait; |
12246 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12247 | remote_ops.to_store_registers = remote_store_registers; | |
12248 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12249 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12250 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12251 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12252 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12253 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12254 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12255 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12256 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12257 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12258 | remote_ops.to_watchpoint_addr_within_range = |
12259 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12260 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12261 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12262 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12263 | remote_ops.to_region_ok_for_hw_watchpoint |
12264 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12265 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12266 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12267 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12268 | remote_ops.to_load = remote_load; |
c906108c | 12269 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12270 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12271 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12272 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 12273 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12274 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12275 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12276 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12277 | remote_ops.to_stop = remote_stop; |
4b8a223f | 12278 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12279 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12280 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12281 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12282 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12283 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12284 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12285 | remote_ops.to_has_memory = default_child_has_memory; | |
12286 | remote_ops.to_has_stack = default_child_has_stack; | |
12287 | remote_ops.to_has_registers = default_child_has_registers; | |
12288 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12289 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12290 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12291 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12292 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12293 | remote_ops.to_flash_erase = remote_flash_erase; |
12294 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12295 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12296 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12297 | remote_ops.to_can_async_p = remote_can_async_p; |
12298 | remote_ops.to_is_async_p = remote_is_async_p; | |
12299 | remote_ops.to_async = remote_async; | |
75c99385 PA |
12300 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12301 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12302 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12303 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
12304 | remote_ops.to_supports_disable_randomization |
12305 | = remote_supports_disable_randomization; | |
4bd7dc42 | 12306 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
12307 | remote_ops.to_fileio_open = remote_hostio_open; |
12308 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12309 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 12310 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
12311 | remote_ops.to_fileio_close = remote_hostio_close; |
12312 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 12313 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 12314 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 12315 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 12316 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 12317 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
12318 | remote_ops.to_trace_init = remote_trace_init; |
12319 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 12320 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
12321 | remote_ops.to_download_trace_state_variable |
12322 | = remote_download_trace_state_variable; | |
d248b706 KY |
12323 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12324 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
12325 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12326 | remote_ops.to_trace_start = remote_trace_start; | |
12327 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 12328 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
12329 | remote_ops.to_trace_stop = remote_trace_stop; |
12330 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
12331 | remote_ops.to_get_trace_state_variable_value |
12332 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
12333 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12334 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
12335 | remote_ops.to_upload_trace_state_variables |
12336 | = remote_upload_trace_state_variables; | |
00bf0b85 | 12337 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 12338 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 12339 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 12340 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 12341 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 12342 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 12343 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 12344 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 12345 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 12346 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
12347 | remote_ops.to_static_tracepoint_marker_at |
12348 | = remote_static_tracepoint_marker_at; | |
12349 | remote_ops.to_static_tracepoint_markers_by_strid | |
12350 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 12351 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
12352 | remote_ops.to_use_agent = remote_use_agent; |
12353 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
12354 | remote_ops.to_supports_btrace = remote_supports_btrace; |
12355 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12356 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12357 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12358 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 12359 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
12360 | remote_ops.to_augmented_libraries_svr4_read = |
12361 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
12362 | } |
12363 | ||
12364 | /* Set up the extended remote vector by making a copy of the standard | |
12365 | remote vector and adding to it. */ | |
12366 | ||
12367 | static void | |
fba45db2 | 12368 | init_extended_remote_ops (void) |
c906108c SS |
12369 | { |
12370 | extended_remote_ops = remote_ops; | |
12371 | ||
0f71a2f6 | 12372 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 12373 | extended_remote_ops.to_longname = |
c906108c | 12374 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 12375 | extended_remote_ops.to_doc = |
c906108c | 12376 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
12377 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
12378 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
12379 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
12380 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
12381 | extended_remote_ops.to_detach = extended_remote_detach; |
12382 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 12383 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 12384 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
12385 | extended_remote_ops.to_supports_disable_randomization |
12386 | = extended_remote_supports_disable_randomization; | |
de0d863e | 12387 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
cbb8991c DB |
12388 | extended_remote_ops.to_insert_fork_catchpoint |
12389 | = remote_insert_fork_catchpoint; | |
12390 | extended_remote_ops.to_remove_fork_catchpoint | |
12391 | = remote_remove_fork_catchpoint; | |
12392 | extended_remote_ops.to_insert_vfork_catchpoint | |
12393 | = remote_insert_vfork_catchpoint; | |
12394 | extended_remote_ops.to_remove_vfork_catchpoint | |
12395 | = remote_remove_vfork_catchpoint; | |
0f71a2f6 JM |
12396 | } |
12397 | ||
6426a772 | 12398 | static int |
6a109b6b | 12399 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 12400 | { |
5d93a237 TT |
12401 | struct remote_state *rs = get_remote_state (); |
12402 | ||
c6ebd6cf | 12403 | if (!target_async_permitted) |
75c99385 PA |
12404 | /* We only enable async when the user specifically asks for it. */ |
12405 | return 0; | |
12406 | ||
23860348 | 12407 | /* We're async whenever the serial device is. */ |
5d93a237 | 12408 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
12409 | } |
12410 | ||
12411 | static int | |
6a109b6b | 12412 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 12413 | { |
5d93a237 TT |
12414 | struct remote_state *rs = get_remote_state (); |
12415 | ||
c6ebd6cf | 12416 | if (!target_async_permitted) |
75c99385 PA |
12417 | /* We only enable async when the user specifically asks for it. */ |
12418 | return 0; | |
12419 | ||
23860348 | 12420 | /* We're async whenever the serial device is. */ |
5d93a237 | 12421 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
12422 | } |
12423 | ||
2acceee2 JM |
12424 | /* Pass the SERIAL event on and up to the client. One day this code |
12425 | will be able to delay notifying the client of an event until the | |
23860348 | 12426 | point where an entire packet has been received. */ |
2acceee2 | 12427 | |
2acceee2 JM |
12428 | static serial_event_ftype remote_async_serial_handler; |
12429 | ||
6426a772 | 12430 | static void |
819cc324 | 12431 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 12432 | { |
88b496c3 TT |
12433 | struct remote_state *rs = context; |
12434 | ||
2acceee2 JM |
12435 | /* Don't propogate error information up to the client. Instead let |
12436 | the client find out about the error by querying the target. */ | |
6a3753b3 | 12437 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
12438 | } |
12439 | ||
74531fed PA |
12440 | static void |
12441 | remote_async_inferior_event_handler (gdb_client_data data) | |
12442 | { | |
12443 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12444 | } | |
12445 | ||
2acceee2 | 12446 | static void |
6a3753b3 | 12447 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 12448 | { |
5d93a237 TT |
12449 | struct remote_state *rs = get_remote_state (); |
12450 | ||
6a3753b3 | 12451 | if (enable) |
2acceee2 | 12452 | { |
88b496c3 | 12453 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
12454 | |
12455 | /* If there are pending events in the stop reply queue tell the | |
12456 | event loop to process them. */ | |
12457 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12458 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
12459 | } |
12460 | else | |
b7d2e916 PA |
12461 | { |
12462 | serial_async (rs->remote_desc, NULL, NULL); | |
12463 | clear_async_event_handler (remote_async_inferior_event_token); | |
12464 | } | |
6426a772 JM |
12465 | } |
12466 | ||
5a2468f5 | 12467 | static void |
c2d11a7d | 12468 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 12469 | { |
635c7e8a | 12470 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
12471 | } |
12472 | ||
d471ea57 AC |
12473 | static void |
12474 | show_remote_cmd (char *args, int from_tty) | |
12475 | { | |
37a105a1 | 12476 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 12477 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
12478 | struct cleanup *showlist_chain; |
12479 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12480 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12481 | |
12482 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12483 | for (; list != NULL; list = list->next) | |
12484 | if (strcmp (list->name, "Z-packet") == 0) | |
12485 | continue; | |
427c3a89 DJ |
12486 | else if (list->type == not_set_cmd) |
12487 | /* Alias commands are exactly like the original, except they | |
12488 | don't have the normal type. */ | |
12489 | continue; | |
12490 | else | |
37a105a1 DJ |
12491 | { |
12492 | struct cleanup *option_chain | |
12493 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12494 | |
37a105a1 DJ |
12495 | ui_out_field_string (uiout, "name", list->name); |
12496 | ui_out_text (uiout, ": "); | |
427c3a89 | 12497 | if (list->type == show_cmd) |
5b9afe8a | 12498 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12499 | else |
12500 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12501 | /* Close the tuple. */ |
12502 | do_cleanups (option_chain); | |
12503 | } | |
427c3a89 DJ |
12504 | |
12505 | /* Close the tuple. */ | |
12506 | do_cleanups (showlist_chain); | |
d471ea57 | 12507 | } |
5a2468f5 | 12508 | |
0f71a2f6 | 12509 | |
23860348 | 12510 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12511 | static void |
12512 | remote_new_objfile (struct objfile *objfile) | |
12513 | { | |
5d93a237 TT |
12514 | struct remote_state *rs = get_remote_state (); |
12515 | ||
12516 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12517 | remote_check_symbols (); |
dc8acb97 MS |
12518 | } |
12519 | ||
00bf0b85 SS |
12520 | /* Pull all the tracepoints defined on the target and create local |
12521 | data structures representing them. We don't want to create real | |
12522 | tracepoints yet, we don't want to mess up the user's existing | |
12523 | collection. */ | |
12524 | ||
12525 | static int | |
ab6617cc | 12526 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12527 | { |
00bf0b85 SS |
12528 | struct remote_state *rs = get_remote_state (); |
12529 | char *p; | |
d5551862 | 12530 | |
00bf0b85 SS |
12531 | /* Ask for a first packet of tracepoint definition. */ |
12532 | putpkt ("qTfP"); | |
12533 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12534 | p = rs->buf; | |
12535 | while (*p && *p != 'l') | |
d5551862 | 12536 | { |
00bf0b85 SS |
12537 | parse_tracepoint_definition (p, utpp); |
12538 | /* Ask for another packet of tracepoint definition. */ | |
12539 | putpkt ("qTsP"); | |
12540 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12541 | p = rs->buf; | |
d5551862 | 12542 | } |
00bf0b85 | 12543 | return 0; |
d5551862 SS |
12544 | } |
12545 | ||
00bf0b85 | 12546 | static int |
181e3713 TT |
12547 | remote_upload_trace_state_variables (struct target_ops *self, |
12548 | struct uploaded_tsv **utsvp) | |
d5551862 | 12549 | { |
00bf0b85 | 12550 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12551 | char *p; |
d5551862 | 12552 | |
00bf0b85 SS |
12553 | /* Ask for a first packet of variable definition. */ |
12554 | putpkt ("qTfV"); | |
d5551862 SS |
12555 | getpkt (&rs->buf, &rs->buf_size, 0); |
12556 | p = rs->buf; | |
00bf0b85 | 12557 | while (*p && *p != 'l') |
d5551862 | 12558 | { |
00bf0b85 SS |
12559 | parse_tsv_definition (p, utsvp); |
12560 | /* Ask for another packet of variable definition. */ | |
12561 | putpkt ("qTsV"); | |
d5551862 SS |
12562 | getpkt (&rs->buf, &rs->buf_size, 0); |
12563 | p = rs->buf; | |
12564 | } | |
00bf0b85 | 12565 | return 0; |
d5551862 SS |
12566 | } |
12567 | ||
c1e36e3e PA |
12568 | /* The "set/show range-stepping" show hook. */ |
12569 | ||
12570 | static void | |
12571 | show_range_stepping (struct ui_file *file, int from_tty, | |
12572 | struct cmd_list_element *c, | |
12573 | const char *value) | |
12574 | { | |
12575 | fprintf_filtered (file, | |
12576 | _("Debugger's willingness to use range stepping " | |
12577 | "is %s.\n"), value); | |
12578 | } | |
12579 | ||
12580 | /* The "set/show range-stepping" set hook. */ | |
12581 | ||
12582 | static void | |
12583 | set_range_stepping (char *ignore_args, int from_tty, | |
12584 | struct cmd_list_element *c) | |
12585 | { | |
5d93a237 TT |
12586 | struct remote_state *rs = get_remote_state (); |
12587 | ||
c1e36e3e PA |
12588 | /* Whene enabling, check whether range stepping is actually |
12589 | supported by the target, and warn if not. */ | |
12590 | if (use_range_stepping) | |
12591 | { | |
5d93a237 | 12592 | if (rs->remote_desc != NULL) |
c1e36e3e | 12593 | { |
4082afcc | 12594 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12595 | remote_vcont_probe (rs); |
12596 | ||
4082afcc | 12597 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12598 | && rs->supports_vCont.r) |
12599 | return; | |
12600 | } | |
12601 | ||
12602 | warning (_("Range stepping is not supported by the current target")); | |
12603 | } | |
12604 | } | |
12605 | ||
c906108c | 12606 | void |
fba45db2 | 12607 | _initialize_remote (void) |
c906108c | 12608 | { |
ea9c271d | 12609 | struct remote_state *rs; |
9a7071a8 | 12610 | struct cmd_list_element *cmd; |
6f937416 | 12611 | const char *cmd_name; |
ea9c271d | 12612 | |
0f71a2f6 | 12613 | /* architecture specific data */ |
2bc416ba | 12614 | remote_gdbarch_data_handle = |
23860348 | 12615 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
12616 | remote_g_packet_data_handle = |
12617 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 12618 | |
ea9c271d DJ |
12619 | /* Initialize the per-target state. At the moment there is only one |
12620 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
12621 | time. */ |
12622 | remote_state = new_remote_state (); | |
ea9c271d | 12623 | |
c906108c SS |
12624 | init_remote_ops (); |
12625 | add_target (&remote_ops); | |
12626 | ||
12627 | init_extended_remote_ops (); | |
12628 | add_target (&extended_remote_ops); | |
cce74817 | 12629 | |
dc8acb97 | 12630 | /* Hook into new objfile notification. */ |
06d3b283 | 12631 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
12632 | /* We're no longer interested in notification events of an inferior |
12633 | when it exits. */ | |
12634 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 12635 | |
b803fb0f | 12636 | /* Set up signal handlers. */ |
934b9bac | 12637 | async_sigint_remote_token = |
b803fb0f | 12638 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 12639 | async_sigint_remote_twice_token = |
6d549500 | 12640 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 12641 | |
c906108c SS |
12642 | #if 0 |
12643 | init_remote_threadtests (); | |
12644 | #endif | |
12645 | ||
722247f1 | 12646 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 12647 | /* set/show remote ... */ |
d471ea57 | 12648 | |
1bedd215 | 12649 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
12650 | Remote protocol specific variables\n\ |
12651 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12652 | the packets being used"), |
cff3e48b | 12653 | &remote_set_cmdlist, "set remote ", |
23860348 | 12654 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 12655 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
12656 | Remote protocol specific variables\n\ |
12657 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12658 | the packets being used"), |
cff3e48b | 12659 | &remote_show_cmdlist, "show remote ", |
23860348 | 12660 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 12661 | |
1a966eab AC |
12662 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
12663 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
12664 | Argument is a single section name (default: all loaded sections).\n\ |
12665 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
12666 | &cmdlist); |
12667 | ||
1a966eab AC |
12668 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
12669 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
12670 | maintenance packet TEXT\n\ |
12671 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12672 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12673 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 12674 | terminating `#' character and checksum."), |
c906108c SS |
12675 | &maintenancelist); |
12676 | ||
7915a72c AC |
12677 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
12678 | Set whether to send break if interrupted."), _("\ | |
12679 | Show whether to send break if interrupted."), _("\ | |
12680 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 12681 | set_remotebreak, show_remotebreak, |
e707bbc2 | 12682 | &setlist, &showlist); |
9a7071a8 JB |
12683 | cmd_name = "remotebreak"; |
12684 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12685 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12686 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12687 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12688 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12689 | ||
12690 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
12691 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12692 | _("\ | |
9a7071a8 JB |
12693 | Set interrupt sequence to remote target."), _("\ |
12694 | Show interrupt sequence to remote target."), _("\ | |
12695 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12696 | NULL, show_interrupt_sequence, | |
12697 | &remote_set_cmdlist, | |
12698 | &remote_show_cmdlist); | |
12699 | ||
12700 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12701 | &interrupt_on_connect, _("\ | |
12702 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12703 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12704 | If set, interrupt sequence is sent to remote target."), | |
12705 | NULL, NULL, | |
12706 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 12707 | |
23860348 | 12708 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 12709 | |
1a966eab AC |
12710 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
12711 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 12712 | &setlist); |
1a966eab AC |
12713 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
12714 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
12715 | &showlist); |
12716 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
12717 | set_memory_write_packet_size, _("\ |
12718 | Set the maximum number of bytes per memory-write packet.\n\ | |
12719 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12720 | default packet size. The actual limit is further reduced\n\ | |
12721 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12722 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12723 | &remote_set_cmdlist); |
12724 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12725 | set_memory_read_packet_size, _("\ |
12726 | Set the maximum number of bytes per memory-read packet.\n\ | |
12727 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12728 | default packet size. The actual limit is further reduced\n\ | |
12729 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12730 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12731 | &remote_set_cmdlist); |
12732 | add_cmd ("memory-write-packet-size", no_class, | |
12733 | show_memory_write_packet_size, | |
1a966eab | 12734 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12735 | &remote_show_cmdlist); |
12736 | add_cmd ("memory-read-packet-size", no_class, | |
12737 | show_memory_read_packet_size, | |
1a966eab | 12738 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12739 | &remote_show_cmdlist); |
c906108c | 12740 | |
b3f42336 | 12741 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12742 | &remote_hw_watchpoint_limit, _("\ |
12743 | Set the maximum number of target hardware watchpoints."), _("\ | |
12744 | Show the maximum number of target hardware watchpoints."), _("\ | |
12745 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12746 | NULL, NULL, /* FIXME: i18n: The maximum |
12747 | number of target hardware | |
12748 | watchpoints is %s. */ | |
b3f42336 | 12749 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12750 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12751 | &remote_hw_watchpoint_length_limit, _("\ | |
12752 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12753 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12754 | Specify a negative limit for unlimited."), | |
12755 | NULL, NULL, /* FIXME: i18n: The maximum | |
12756 | length (in bytes) of a target | |
12757 | hardware watchpoint is %s. */ | |
12758 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12759 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12760 | &remote_hw_breakpoint_limit, _("\ |
12761 | Set the maximum number of target hardware breakpoints."), _("\ | |
12762 | Show the maximum number of target hardware breakpoints."), _("\ | |
12763 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12764 | NULL, NULL, /* FIXME: i18n: The maximum |
12765 | number of target hardware | |
12766 | breakpoints is %s. */ | |
b3f42336 | 12767 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12768 | |
1b493192 PA |
12769 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12770 | &remote_address_size, _("\ | |
4d28ad1e AC |
12771 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12772 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12773 | NULL, |
12774 | NULL, /* FIXME: i18n: */ | |
12775 | &setlist, &showlist); | |
c906108c | 12776 | |
ca4f7f8b PA |
12777 | init_all_packet_configs (); |
12778 | ||
444abaca | 12779 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12780 | "X", "binary-download", 1); |
0f71a2f6 | 12781 | |
444abaca | 12782 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12783 | "vCont", "verbose-resume", 0); |
506fb367 | 12784 | |
89be2091 DJ |
12785 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12786 | "QPassSignals", "pass-signals", 0); | |
12787 | ||
9b224c5e PA |
12788 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12789 | "QProgramSignals", "program-signals", 0); | |
12790 | ||
444abaca | 12791 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12792 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12793 | |
444abaca | 12794 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12795 | "P", "set-register", 1); |
d471ea57 | 12796 | |
444abaca | 12797 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12798 | "p", "fetch-register", 1); |
b96ec7ac | 12799 | |
444abaca | 12800 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12801 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12802 | |
444abaca | 12803 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12804 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12805 | |
444abaca | 12806 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12807 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12808 | |
444abaca | 12809 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12810 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12811 | |
444abaca | 12812 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12813 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12814 | |
0876f84a DJ |
12815 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12816 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12817 | |
c78fa86a GB |
12818 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
12819 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
12820 | ||
23181151 DJ |
12821 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12822 | "qXfer:features:read", "target-features", 0); | |
12823 | ||
cfa9d6d9 DJ |
12824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12825 | "qXfer:libraries:read", "library-info", 0); | |
12826 | ||
2268b414 JK |
12827 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12828 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12829 | ||
fd79ecee DJ |
12830 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12831 | "qXfer:memory-map:read", "memory-map", 0); | |
12832 | ||
0e7f50da UW |
12833 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12834 | "qXfer:spu:read", "read-spu-object", 0); | |
12835 | ||
12836 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12837 | "qXfer:spu:write", "write-spu-object", 0); | |
12838 | ||
07e059b5 VP |
12839 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12840 | "qXfer:osdata:read", "osdata", 0); | |
12841 | ||
dc146f7c VP |
12842 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12843 | "qXfer:threads:read", "threads", 0); | |
12844 | ||
4aa995e1 PA |
12845 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12846 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12847 | ||
12848 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12849 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12850 | ||
b3b9301e PA |
12851 | add_packet_config_cmd |
12852 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12853 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12854 | |
169081d0 TG |
12855 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12856 | "qXfer:uib:read", "unwind-info-block", 0); | |
12857 | ||
444abaca | 12858 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12859 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12860 | 0); |
12861 | ||
711e434b PM |
12862 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12863 | "qGetTIBAddr", "get-thread-information-block-address", | |
12864 | 0); | |
12865 | ||
40ab02ce MS |
12866 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12867 | "bc", "reverse-continue", 0); | |
12868 | ||
12869 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12870 | "bs", "reverse-step", 0); | |
12871 | ||
be2a5f71 DJ |
12872 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12873 | "qSupported", "supported-packets", 0); | |
12874 | ||
08388c79 DE |
12875 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12876 | "qSearch:memory", "search-memory", 0); | |
12877 | ||
bd3eecc3 PA |
12878 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12879 | "qTStatus", "trace-status", 0); | |
12880 | ||
15a201c8 GB |
12881 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
12882 | "vFile:setfs", "hostio-setfs", 0); | |
12883 | ||
a6b151f1 DJ |
12884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12885 | "vFile:open", "hostio-open", 0); | |
12886 | ||
12887 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12888 | "vFile:pread", "hostio-pread", 0); | |
12889 | ||
12890 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12891 | "vFile:pwrite", "hostio-pwrite", 0); | |
12892 | ||
12893 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12894 | "vFile:close", "hostio-close", 0); | |
12895 | ||
12896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12897 | "vFile:unlink", "hostio-unlink", 0); | |
12898 | ||
b9e7b9c3 UW |
12899 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12900 | "vFile:readlink", "hostio-readlink", 0); | |
12901 | ||
0a93529c GB |
12902 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
12903 | "vFile:fstat", "hostio-fstat", 0); | |
12904 | ||
2d717e4f DJ |
12905 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12906 | "vAttach", "attach", 0); | |
12907 | ||
12908 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12909 | "vRun", "run", 0); | |
12910 | ||
a6f3e723 SL |
12911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12912 | "QStartNoAckMode", "noack", 0); | |
12913 | ||
82f73884 PA |
12914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12915 | "vKill", "kill", 0); | |
12916 | ||
0b16c5cf PA |
12917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12918 | "qAttached", "query-attached", 0); | |
12919 | ||
782b2b07 | 12920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12921 | "ConditionalTracepoints", |
12922 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12923 | |
12924 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12925 | "ConditionalBreakpoints", | |
12926 | "conditional-breakpoints", 0); | |
12927 | ||
d3ce09f5 SS |
12928 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12929 | "BreakpointCommands", | |
12930 | "breakpoint-commands", 0); | |
12931 | ||
7a697b8d SS |
12932 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12933 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12934 | |
409873ef SS |
12935 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12936 | "TracepointSource", "TracepointSource", 0); | |
12937 | ||
d914c394 SS |
12938 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12939 | "QAllow", "allow", 0); | |
12940 | ||
0fb4aa4b PA |
12941 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12942 | "StaticTracepoints", "static-tracepoints", 0); | |
12943 | ||
1e4d1764 YQ |
12944 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12945 | "InstallInTrace", "install-in-trace", 0); | |
12946 | ||
0fb4aa4b PA |
12947 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12948 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12949 | ||
78d85199 YQ |
12950 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12951 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12952 | ||
03583c20 UW |
12953 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12954 | "QDisableRandomization", "disable-randomization", 0); | |
12955 | ||
d1feda86 YQ |
12956 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12957 | "QAgent", "agent", 0); | |
12958 | ||
f6f899bf HAQ |
12959 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12960 | "QTBuffer:size", "trace-buffer-size", 0); | |
12961 | ||
9accd112 MM |
12962 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12963 | "Qbtrace:off", "disable-btrace", 0); | |
12964 | ||
12965 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
12966 | "Qbtrace:bts", "enable-btrace-bts", 0); |
12967 | ||
12968 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
12969 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
12970 | |
12971 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
12972 | "qXfer:btrace", "read-btrace", 0); | |
12973 | ||
f4abbc16 MM |
12974 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
12975 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
12976 | ||
d33501a5 MM |
12977 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
12978 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
12979 | ||
f7e6eed5 PA |
12980 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
12981 | "swbreak-feature", "swbreak-feature", 0); | |
12982 | ||
12983 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
12984 | "hwbreak-feature", "hwbreak-feature", 0); | |
12985 | ||
89245bc0 DB |
12986 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
12987 | "fork-event-feature", "fork-event-feature", 0); | |
12988 | ||
12989 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
12990 | "vfork-event-feature", "vfork-event-feature", 0); | |
12991 | ||
b20a6524 MM |
12992 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
12993 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
12994 | ||
0b736949 DB |
12995 | /* Assert that we've registered "set remote foo-packet" commands |
12996 | for all packet configs. */ | |
ca4f7f8b PA |
12997 | { |
12998 | int i; | |
12999 | ||
13000 | for (i = 0; i < PACKET_MAX; i++) | |
13001 | { | |
13002 | /* Ideally all configs would have a command associated. Some | |
13003 | still don't though. */ | |
13004 | int excepted; | |
13005 | ||
13006 | switch (i) | |
13007 | { | |
13008 | case PACKET_QNonStop: | |
13009 | case PACKET_multiprocess_feature: | |
13010 | case PACKET_EnableDisableTracepoints_feature: | |
13011 | case PACKET_tracenz_feature: | |
13012 | case PACKET_DisconnectedTracing_feature: | |
13013 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13014 | case PACKET_qCRC: |
13015 | /* Additions to this list need to be well justified: | |
13016 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13017 | excepted = 1; |
13018 | break; | |
13019 | default: | |
13020 | excepted = 0; | |
13021 | break; | |
13022 | } | |
13023 | ||
13024 | /* This catches both forgetting to add a config command, and | |
13025 | forgetting to remove a packet from the exception list. */ | |
13026 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13027 | } | |
13028 | } | |
13029 | ||
37a105a1 DJ |
13030 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13031 | Z sub-packet has its own set and show commands, but users may | |
13032 | have sets to this variable in their .gdbinit files (or in their | |
13033 | documentation). */ | |
e9e68a56 | 13034 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13035 | &remote_Z_packet_detect, _("\ |
13036 | Set use of remote protocol `Z' packets"), _("\ | |
13037 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13038 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13039 | packets."), |
e9e68a56 | 13040 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13041 | show_remote_protocol_Z_packet_cmd, |
13042 | /* FIXME: i18n: Use of remote protocol | |
13043 | `Z' packets is %s. */ | |
e9e68a56 | 13044 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13045 | |
a6b151f1 DJ |
13046 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13047 | Manipulate files on the remote system\n\ | |
13048 | Transfer files to and from the remote target system."), | |
13049 | &remote_cmdlist, "remote ", | |
13050 | 0 /* allow-unknown */, &cmdlist); | |
13051 | ||
13052 | add_cmd ("put", class_files, remote_put_command, | |
13053 | _("Copy a local file to the remote system."), | |
13054 | &remote_cmdlist); | |
13055 | ||
13056 | add_cmd ("get", class_files, remote_get_command, | |
13057 | _("Copy a remote file to the local system."), | |
13058 | &remote_cmdlist); | |
13059 | ||
13060 | add_cmd ("delete", class_files, remote_delete_command, | |
13061 | _("Delete a remote file."), | |
13062 | &remote_cmdlist); | |
13063 | ||
2d717e4f DJ |
13064 | remote_exec_file = xstrdup (""); |
13065 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
13066 | &remote_exec_file, _("\ | |
13067 | Set the remote pathname for \"run\""), _("\ | |
13068 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
13069 | &remote_set_cmdlist, &remote_show_cmdlist); | |
13070 | ||
c1e36e3e PA |
13071 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13072 | &use_range_stepping, _("\ | |
13073 | Enable or disable range stepping."), _("\ | |
13074 | Show whether target-assisted range stepping is enabled."), _("\ | |
13075 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13076 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13077 | of issuing multiple single-steps. This speeds up source level\n\ | |
13078 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13079 | stepping is supported by the target. The default is on."), | |
13080 | set_range_stepping, | |
13081 | show_range_stepping, | |
13082 | &setlist, | |
13083 | &showlist); | |
13084 | ||
449092f6 CV |
13085 | /* Eventually initialize fileio. See fileio.c */ |
13086 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13087 | |
ba348170 | 13088 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13089 | special ptids with it set to != 0. */ |
ba348170 PA |
13090 | magic_null_ptid = ptid_build (42000, -1, 1); |
13091 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13092 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13093 | |
13094 | target_buf_size = 2048; | |
13095 | target_buf = xmalloc (target_buf_size); | |
c906108c | 13096 | } |
10760264 | 13097 |