Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
c5aa993b | 30 | /*#include "terminal.h" */ |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
6867ae3e | 39 | #include "observer.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
614c279d | 45 | #include "filestuff.h" |
9c3d6531 | 46 | #include "rsp-low.h" |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
d1feda86 | 71 | #include "agent.h" |
9accd112 | 72 | #include "btrace.h" |
35b1e5cc | 73 | |
0df8b418 | 74 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
75 | static char *target_buf; |
76 | static long target_buf_size; | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
934b9bac | 91 | static void async_cleanup_sigint_signal_handler (void *dummy); |
6d820c5c | 92 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed | 93 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 94 | int forever, int *is_notif); |
6426a772 | 95 | |
934b9bac JK |
96 | static void async_handle_remote_sigint (int); |
97 | static void async_handle_remote_sigint_twice (int); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
f32dbf8c MM |
101 | static void remote_prepare_to_store (struct target_ops *self, |
102 | struct regcache *regcache); | |
c906108c | 103 | |
014f9477 TT |
104 | static void remote_open_1 (const char *, int, struct target_ops *, |
105 | int extended_p); | |
c906108c | 106 | |
de90e03d | 107 | static void remote_close (struct target_ops *self); |
c906108c | 108 | |
cbb8991c DB |
109 | struct remote_state; |
110 | ||
111 | static int remote_vkill (int pid, struct remote_state *rs); | |
112 | ||
136d6dae | 113 | static void remote_mourn (struct target_ops *ops); |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_restart (void); |
c906108c | 116 | |
136d6dae | 117 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
c33e31fd PA |
123 | static void remote_serial_write (const char *str, int len); |
124 | ||
7d85a9c0 | 125 | static void remote_kill (struct target_ops *ops); |
c906108c | 126 | |
6a109b6b | 127 | static int remote_can_async_p (struct target_ops *); |
75c99385 | 128 | |
6a109b6b | 129 | static int remote_is_async_p (struct target_ops *); |
75c99385 | 130 | |
6a3753b3 | 131 | static void remote_async (struct target_ops *ops, int enable); |
75c99385 | 132 | |
934b9bac | 133 | static void sync_remote_interrupt_twice (int signo); |
7a292a7a | 134 | |
a14ed312 | 135 | static void interrupt_query (void); |
c906108c | 136 | |
79d7f229 PA |
137 | static void set_general_thread (struct ptid ptid); |
138 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 139 | |
a14ed312 | 140 | static void get_offsets (void); |
c906108c | 141 | |
6d820c5c DJ |
142 | static void skip_frame (void); |
143 | ||
144 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 145 | |
a14ed312 | 146 | static int hexnumlen (ULONGEST num); |
c906108c | 147 | |
a14ed312 | 148 | static void init_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void init_extended_remote_ops (void); |
c906108c | 151 | |
1eab8a48 | 152 | static void remote_stop (struct target_ops *self, ptid_t); |
c906108c | 153 | |
a14ed312 | 154 | static int stubhex (int ch); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumstr (char *, ULONGEST); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 159 | |
a14ed312 | 160 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 161 | |
baa336ce | 162 | static void print_packet (const char *); |
c906108c | 163 | |
a14ed312 | 164 | static void compare_sections_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void packet_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 169 | |
39f77062 | 170 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 171 | |
baa336ce | 172 | static int putpkt_binary (const char *buf, int cnt); |
c906108c | 173 | |
a14ed312 | 174 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 175 | |
5a2468f5 | 176 | struct packet_config; |
5a2468f5 | 177 | |
a14ed312 | 178 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 179 | |
bb572ddd DJ |
180 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
181 | int from_tty, | |
182 | struct cmd_list_element *c, | |
183 | const char *value); | |
184 | ||
82f73884 PA |
185 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
186 | static ptid_t read_ptid (char *buf, char **obuf); | |
187 | ||
c378d69d | 188 | static void remote_set_permissions (struct target_ops *self); |
d914c394 | 189 | |
8bd200f1 TT |
190 | static int remote_get_trace_status (struct target_ops *self, |
191 | struct trace_status *ts); | |
d5551862 | 192 | |
ab6617cc TT |
193 | static int remote_upload_tracepoints (struct target_ops *self, |
194 | struct uploaded_tp **utpp); | |
00bf0b85 | 195 | |
181e3713 TT |
196 | static int remote_upload_trace_state_variables (struct target_ops *self, |
197 | struct uploaded_tsv **utsvp); | |
00bf0b85 | 198 | |
c8d104ad PA |
199 | static void remote_query_supported (void); |
200 | ||
36d25514 | 201 | static void remote_check_symbols (void); |
c8d104ad | 202 | |
a14ed312 | 203 | void _initialize_remote (void); |
c906108c | 204 | |
74531fed | 205 | struct stop_reply; |
74531fed | 206 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 207 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 208 | static void push_stop_reply (struct stop_reply *); |
bcc75809 | 209 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
74531fed PA |
210 | static int peek_stop_reply (ptid_t ptid); |
211 | ||
cbb8991c DB |
212 | struct threads_listing_context; |
213 | static void remove_new_fork_children (struct threads_listing_context *); | |
214 | ||
74531fed | 215 | static void remote_async_inferior_event_handler (gdb_client_data); |
74531fed | 216 | |
e3594fd1 | 217 | static void remote_terminal_ours (struct target_ops *self); |
d3fd5342 | 218 | |
d962ef82 DJ |
219 | static int remote_read_description_p (struct target_ops *target); |
220 | ||
176a6961 | 221 | static void remote_console_output (char *msg); |
dde08ee1 | 222 | |
efcc2da7 | 223 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
b775012e | 224 | |
78eff0ec | 225 | static int remote_can_run_breakpoint_commands (struct target_ops *self); |
d3ce09f5 | 226 | |
f4abbc16 MM |
227 | static void remote_btrace_reset (void); |
228 | ||
a6b151f1 DJ |
229 | /* For "remote". */ |
230 | ||
231 | static struct cmd_list_element *remote_cmdlist; | |
232 | ||
bb572ddd DJ |
233 | /* For "set remote" and "show remote". */ |
234 | ||
235 | static struct cmd_list_element *remote_set_cmdlist; | |
236 | static struct cmd_list_element *remote_show_cmdlist; | |
237 | ||
d458bd84 PA |
238 | /* Stub vCont actions support. |
239 | ||
240 | Each field is a boolean flag indicating whether the stub reports | |
241 | support for the corresponding action. */ | |
242 | ||
243 | struct vCont_action_support | |
244 | { | |
245 | /* vCont;t */ | |
246 | int t; | |
c1e36e3e PA |
247 | |
248 | /* vCont;r */ | |
249 | int r; | |
d458bd84 PA |
250 | }; |
251 | ||
c1e36e3e PA |
252 | /* Controls whether GDB is willing to use range stepping. */ |
253 | ||
254 | static int use_range_stepping = 1; | |
255 | ||
0d031856 TT |
256 | #define OPAQUETHREADBYTES 8 |
257 | ||
258 | /* a 64 bit opaque identifier */ | |
259 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
260 | ||
261 | /* About this many threadisds fit in a packet. */ | |
262 | ||
263 | #define MAXTHREADLISTRESULTS 32 | |
264 | ||
ea9c271d DJ |
265 | /* Description of the remote protocol state for the currently |
266 | connected target. This is per-target state, and independent of the | |
267 | selected architecture. */ | |
268 | ||
269 | struct remote_state | |
270 | { | |
271 | /* A buffer to use for incoming packets, and its current size. The | |
272 | buffer is grown dynamically for larger incoming packets. | |
273 | Outgoing packets may also be constructed in this buffer. | |
274 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
275 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
276 | packets. */ | |
277 | char *buf; | |
278 | long buf_size; | |
be2a5f71 | 279 | |
1e51243a PA |
280 | /* True if we're going through initial connection setup (finding out |
281 | about the remote side's threads, relocating symbols, etc.). */ | |
282 | int starting_up; | |
283 | ||
be2a5f71 DJ |
284 | /* If we negotiated packet size explicitly (and thus can bypass |
285 | heuristics for the largest packet size that will not overflow | |
286 | a buffer in the stub), this will be set to that packet size. | |
287 | Otherwise zero, meaning to use the guessed size. */ | |
288 | long explicit_packet_size; | |
2d717e4f DJ |
289 | |
290 | /* remote_wait is normally called when the target is running and | |
291 | waits for a stop reply packet. But sometimes we need to call it | |
292 | when the target is already stopped. We can send a "?" packet | |
293 | and have remote_wait read the response. Or, if we already have | |
294 | the response, we can stash it in BUF and tell remote_wait to | |
295 | skip calling getpkt. This flag is set when BUF contains a | |
296 | stop reply packet and the target is not waiting. */ | |
297 | int cached_wait_status; | |
a6f3e723 SL |
298 | |
299 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
300 | expect acks from each other. The connection is assumed to be | |
301 | reliable. */ | |
302 | int noack_mode; | |
82f73884 PA |
303 | |
304 | /* True if we're connected in extended remote mode. */ | |
305 | int extended; | |
306 | ||
e24a49d8 PA |
307 | /* True if we resumed the target and we're waiting for the target to |
308 | stop. In the mean time, we can't start another command/query. | |
309 | The remote server wouldn't be ready to process it, so we'd | |
310 | timeout waiting for a reply that would never come and eventually | |
311 | we'd close the connection. This can happen in asynchronous mode | |
312 | because we allow GDB commands while the target is running. */ | |
313 | int waiting_for_stop_reply; | |
74531fed | 314 | |
d458bd84 PA |
315 | /* The status of the stub support for the various vCont actions. */ |
316 | struct vCont_action_support supports_vCont; | |
782b2b07 | 317 | |
3a29589a DJ |
318 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
319 | responded to that. */ | |
320 | int ctrlc_pending_p; | |
5d93a237 TT |
321 | |
322 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
323 | remote_open knows that we don't have a file open when the program | |
324 | starts. */ | |
325 | struct serial *remote_desc; | |
47f8a51d TT |
326 | |
327 | /* These are the threads which we last sent to the remote system. The | |
328 | TID member will be -1 for all or -2 for not sent yet. */ | |
329 | ptid_t general_thread; | |
330 | ptid_t continue_thread; | |
262e1174 TT |
331 | |
332 | /* This is the traceframe which we last selected on the remote system. | |
333 | It will be -1 if no traceframe is selected. */ | |
334 | int remote_traceframe_number; | |
747dc59d TT |
335 | |
336 | char *last_pass_packet; | |
5e4a05c4 TT |
337 | |
338 | /* The last QProgramSignals packet sent to the target. We bypass | |
339 | sending a new program signals list down to the target if the new | |
340 | packet is exactly the same as the last we sent. IOW, we only let | |
341 | the target know about program signals list changes. */ | |
342 | char *last_program_signals_packet; | |
b73be471 TT |
343 | |
344 | enum gdb_signal last_sent_signal; | |
280ceea3 TT |
345 | |
346 | int last_sent_step; | |
8e88304f TT |
347 | |
348 | char *finished_object; | |
349 | char *finished_annex; | |
350 | ULONGEST finished_offset; | |
b80fafe3 TT |
351 | |
352 | /* Should we try the 'ThreadInfo' query packet? | |
353 | ||
354 | This variable (NOT available to the user: auto-detect only!) | |
355 | determines whether GDB will use the new, simpler "ThreadInfo" | |
356 | query or the older, more complex syntax for thread queries. | |
357 | This is an auto-detect variable (set to true at each connect, | |
358 | and set to false when the target fails to recognize it). */ | |
359 | int use_threadinfo_query; | |
360 | int use_threadextra_query; | |
88b496c3 | 361 | |
ee154bee TT |
362 | /* This is set to the data address of the access causing the target |
363 | to stop for a watchpoint. */ | |
364 | CORE_ADDR remote_watch_data_address; | |
365 | ||
f7e6eed5 PA |
366 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
367 | enum target_stop_reason stop_reason; | |
0d031856 TT |
368 | |
369 | threadref echo_nextthread; | |
370 | threadref nextthread; | |
371 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
5965e028 YQ |
372 | |
373 | /* The state of remote notification. */ | |
374 | struct remote_notif_state *notif_state; | |
f4abbc16 MM |
375 | |
376 | /* The branch trace configuration. */ | |
377 | struct btrace_config btrace_config; | |
15a201c8 GB |
378 | |
379 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
380 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
381 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
382 | has yet been sent. */ | |
383 | int fs_pid; | |
ea9c271d DJ |
384 | }; |
385 | ||
dc146f7c VP |
386 | /* Private data that we'll store in (struct thread_info)->private. */ |
387 | struct private_thread_info | |
388 | { | |
389 | char *extra; | |
390 | int core; | |
391 | }; | |
392 | ||
393 | static void | |
394 | free_private_thread_info (struct private_thread_info *info) | |
395 | { | |
396 | xfree (info->extra); | |
397 | xfree (info); | |
398 | } | |
399 | ||
ea9c271d DJ |
400 | /* This data could be associated with a target, but we do not always |
401 | have access to the current target when we need it, so for now it is | |
402 | static. This will be fine for as long as only one target is in use | |
403 | at a time. */ | |
cf792862 | 404 | static struct remote_state *remote_state; |
ea9c271d DJ |
405 | |
406 | static struct remote_state * | |
0b83947e | 407 | get_remote_state_raw (void) |
ea9c271d | 408 | { |
cf792862 TT |
409 | return remote_state; |
410 | } | |
411 | ||
412 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
413 | return it. */ | |
414 | ||
415 | static struct remote_state * | |
416 | new_remote_state (void) | |
417 | { | |
418 | struct remote_state *result = XCNEW (struct remote_state); | |
419 | ||
420 | /* The default buffer size is unimportant; it will be expanded | |
421 | whenever a larger buffer is needed. */ | |
422 | result->buf_size = 400; | |
423 | result->buf = xmalloc (result->buf_size); | |
262e1174 | 424 | result->remote_traceframe_number = -1; |
b73be471 | 425 | result->last_sent_signal = GDB_SIGNAL_0; |
15a201c8 | 426 | result->fs_pid = -1; |
cf792862 TT |
427 | |
428 | return result; | |
ea9c271d DJ |
429 | } |
430 | ||
431 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 432 | |
ad10f812 AC |
433 | struct packet_reg |
434 | { | |
435 | long offset; /* Offset into G packet. */ | |
436 | long regnum; /* GDB's internal register number. */ | |
437 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 438 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 439 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 440 | at present. */ |
f5656ead | 441 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 442 | at present. */ |
ad10f812 AC |
443 | }; |
444 | ||
ea9c271d | 445 | struct remote_arch_state |
d01949b6 | 446 | { |
ad10f812 AC |
447 | /* Description of the remote protocol registers. */ |
448 | long sizeof_g_packet; | |
b323314b AC |
449 | |
450 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 451 | (making an array gdbarch_num_regs in size). */ |
b323314b | 452 | struct packet_reg *regs; |
ad10f812 | 453 | |
d01949b6 AC |
454 | /* This is the size (in chars) of the first response to the ``g'' |
455 | packet. It is used as a heuristic when determining the maximum | |
456 | size of memory-read and memory-write packets. A target will | |
457 | typically only reserve a buffer large enough to hold the ``g'' | |
458 | packet. The size does not include packet overhead (headers and | |
23860348 | 459 | trailers). */ |
d01949b6 AC |
460 | long actual_register_packet_size; |
461 | ||
462 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 463 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
464 | long remote_packet_size; |
465 | }; | |
466 | ||
35b1e5cc SS |
467 | /* Utility: generate error from an incoming stub packet. */ |
468 | static void | |
469 | trace_error (char *buf) | |
470 | { | |
471 | if (*buf++ != 'E') | |
472 | return; /* not an error msg */ | |
473 | switch (*buf) | |
474 | { | |
475 | case '1': /* malformed packet error */ | |
476 | if (*++buf == '0') /* general case: */ | |
477 | error (_("remote.c: error in outgoing packet.")); | |
478 | else | |
479 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
480 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
481 | default: |
482 | error (_("Target returns error code '%s'."), buf); | |
483 | } | |
484 | } | |
485 | ||
486 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
487 | static char * | |
488 | remote_get_noisy_reply (char **buf_p, | |
489 | long *sizeof_buf) | |
490 | { | |
491 | do /* Loop on reply from remote stub. */ | |
492 | { | |
493 | char *buf; | |
a744cf53 | 494 | |
0df8b418 | 495 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
496 | getpkt (buf_p, sizeof_buf, 0); |
497 | buf = *buf_p; | |
ad91cd99 | 498 | if (buf[0] == 'E') |
35b1e5cc | 499 | trace_error (buf); |
61012eef | 500 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
501 | { |
502 | ULONGEST ul; | |
503 | CORE_ADDR from, to, org_to; | |
504 | char *p, *pp; | |
505 | int adjusted_size = 0; | |
7556d4a4 | 506 | int relocated = 0; |
dde08ee1 PA |
507 | |
508 | p = buf + strlen ("qRelocInsn:"); | |
509 | pp = unpack_varlen_hex (p, &ul); | |
510 | if (*pp != ';') | |
cb91c06a | 511 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
512 | from = ul; |
513 | ||
514 | p = pp + 1; | |
a9cbf802 | 515 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
516 | to = ul; |
517 | ||
518 | org_to = to; | |
519 | ||
492d29ea | 520 | TRY |
dde08ee1 | 521 | { |
f5656ead | 522 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 523 | relocated = 1; |
dde08ee1 | 524 | } |
492d29ea | 525 | CATCH (ex, RETURN_MASK_ALL) |
7556d4a4 PA |
526 | { |
527 | if (ex.error == MEMORY_ERROR) | |
528 | { | |
529 | /* Propagate memory errors silently back to the | |
530 | target. The stub may have limited the range of | |
531 | addresses we can write to, for example. */ | |
532 | } | |
533 | else | |
534 | { | |
535 | /* Something unexpectedly bad happened. Be verbose | |
536 | so we can tell what, and propagate the error back | |
537 | to the stub, so it doesn't get stuck waiting for | |
538 | a response. */ | |
539 | exception_fprintf (gdb_stderr, ex, | |
540 | _("warning: relocating instruction: ")); | |
541 | } | |
542 | putpkt ("E01"); | |
543 | } | |
492d29ea | 544 | END_CATCH |
7556d4a4 PA |
545 | |
546 | if (relocated) | |
dde08ee1 PA |
547 | { |
548 | adjusted_size = to - org_to; | |
549 | ||
bba74b36 | 550 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
551 | putpkt (buf); |
552 | } | |
dde08ee1 | 553 | } |
ad91cd99 | 554 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
555 | remote_console_output (buf + 1); /* 'O' message from stub */ |
556 | else | |
0df8b418 | 557 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
558 | } |
559 | while (1); | |
560 | } | |
3c3bea1c | 561 | |
d01949b6 AC |
562 | /* Handle for retreving the remote protocol data from gdbarch. */ |
563 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
564 | ||
ea9c271d DJ |
565 | static struct remote_arch_state * |
566 | get_remote_arch_state (void) | |
d01949b6 | 567 | { |
f5656ead | 568 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
569 | } |
570 | ||
0b83947e DJ |
571 | /* Fetch the global remote target state. */ |
572 | ||
573 | static struct remote_state * | |
574 | get_remote_state (void) | |
575 | { | |
576 | /* Make sure that the remote architecture state has been | |
577 | initialized, because doing so might reallocate rs->buf. Any | |
578 | function which calls getpkt also needs to be mindful of changes | |
579 | to rs->buf, but this call limits the number of places which run | |
580 | into trouble. */ | |
581 | get_remote_arch_state (); | |
582 | ||
583 | return get_remote_state_raw (); | |
584 | } | |
585 | ||
74ca34ce DJ |
586 | static int |
587 | compare_pnums (const void *lhs_, const void *rhs_) | |
588 | { | |
589 | const struct packet_reg * const *lhs = lhs_; | |
590 | const struct packet_reg * const *rhs = rhs_; | |
591 | ||
592 | if ((*lhs)->pnum < (*rhs)->pnum) | |
593 | return -1; | |
594 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
595 | return 0; | |
596 | else | |
597 | return 1; | |
598 | } | |
599 | ||
c21236dc PA |
600 | static int |
601 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 602 | { |
74ca34ce | 603 | int regnum, num_remote_regs, offset; |
74ca34ce | 604 | struct packet_reg **remote_regs; |
ea9c271d | 605 | |
4a22f64d | 606 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 607 | { |
c21236dc | 608 | struct packet_reg *r = ®s[regnum]; |
baef701f | 609 | |
4a22f64d | 610 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
611 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
612 | r->pnum = -1; | |
613 | else | |
614 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
615 | ||
b323314b | 616 | r->regnum = regnum; |
74ca34ce DJ |
617 | } |
618 | ||
619 | /* Define the g/G packet format as the contents of each register | |
620 | with a remote protocol number, in order of ascending protocol | |
621 | number. */ | |
622 | ||
4a22f64d | 623 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 624 | * sizeof (struct packet_reg *)); |
f57d151a | 625 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 626 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 627 | regnum++) |
c21236dc PA |
628 | if (regs[regnum].pnum != -1) |
629 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 630 | |
74ca34ce DJ |
631 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
632 | compare_pnums); | |
633 | ||
634 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
635 | { | |
636 | remote_regs[regnum]->in_g_packet = 1; | |
637 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 638 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
639 | } |
640 | ||
c21236dc PA |
641 | return offset; |
642 | } | |
643 | ||
644 | /* Given the architecture described by GDBARCH, return the remote | |
645 | protocol register's number and the register's offset in the g/G | |
646 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
647 | If the target does not have a mapping for REGNUM, return false, | |
648 | otherwise, return true. */ | |
649 | ||
650 | int | |
651 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
652 | int *pnum, int *poffset) | |
653 | { | |
654 | int sizeof_g_packet; | |
655 | struct packet_reg *regs; | |
656 | struct cleanup *old_chain; | |
657 | ||
658 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
659 | ||
660 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
661 | old_chain = make_cleanup (xfree, regs); | |
662 | ||
663 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
664 | ||
665 | *pnum = regs[regnum].pnum; | |
666 | *poffset = regs[regnum].offset; | |
667 | ||
668 | do_cleanups (old_chain); | |
669 | ||
670 | return *pnum != -1; | |
671 | } | |
672 | ||
673 | static void * | |
674 | init_remote_state (struct gdbarch *gdbarch) | |
675 | { | |
676 | struct remote_state *rs = get_remote_state_raw (); | |
677 | struct remote_arch_state *rsa; | |
678 | ||
679 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
680 | ||
681 | /* Use the architecture to build a regnum<->pnum table, which will be | |
682 | 1:1 unless a feature set specifies otherwise. */ | |
683 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
684 | gdbarch_num_regs (gdbarch), | |
685 | struct packet_reg); | |
686 | ||
74ca34ce DJ |
687 | /* Record the maximum possible size of the g packet - it may turn out |
688 | to be smaller. */ | |
c21236dc | 689 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 690 | |
0df8b418 | 691 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
692 | remote stubs have a hardwired buffer size of 400 bytes |
693 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
694 | as the maximum packet-size to ensure that the packet and an extra | |
695 | NUL character can always fit in the buffer. This stops GDB | |
696 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
697 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
698 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 699 | |
ea9c271d DJ |
700 | /* This one is filled in when a ``g'' packet is received. */ |
701 | rsa->actual_register_packet_size = 0; | |
702 | ||
703 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
704 | default, adjust the size accordingly. Remember that each byte is |
705 | encoded as two characters. 32 is the overhead for the packet | |
706 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 707 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 708 | little. */ |
ea9c271d DJ |
709 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
710 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 711 | |
ea9c271d DJ |
712 | /* Make sure that the packet buffer is plenty big enough for |
713 | this architecture. */ | |
714 | if (rs->buf_size < rsa->remote_packet_size) | |
715 | { | |
716 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 717 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 718 | } |
6d820c5c | 719 | |
ea9c271d DJ |
720 | return rsa; |
721 | } | |
722 | ||
723 | /* Return the current allowed size of a remote packet. This is | |
724 | inferred from the current architecture, and should be used to | |
725 | limit the length of outgoing packets. */ | |
726 | static long | |
727 | get_remote_packet_size (void) | |
728 | { | |
be2a5f71 | 729 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
730 | struct remote_arch_state *rsa = get_remote_arch_state (); |
731 | ||
be2a5f71 DJ |
732 | if (rs->explicit_packet_size) |
733 | return rs->explicit_packet_size; | |
734 | ||
ea9c271d | 735 | return rsa->remote_packet_size; |
d01949b6 AC |
736 | } |
737 | ||
ad10f812 | 738 | static struct packet_reg * |
ea9c271d | 739 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 740 | { |
f5656ead | 741 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
742 | return NULL; |
743 | else | |
ad10f812 | 744 | { |
ea9c271d | 745 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 746 | |
b323314b AC |
747 | gdb_assert (r->regnum == regnum); |
748 | return r; | |
ad10f812 | 749 | } |
ad10f812 AC |
750 | } |
751 | ||
752 | static struct packet_reg * | |
ea9c271d | 753 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 754 | { |
b323314b | 755 | int i; |
a744cf53 | 756 | |
f5656ead | 757 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 758 | { |
ea9c271d | 759 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 760 | |
b323314b AC |
761 | if (r->pnum == pnum) |
762 | return r; | |
ad10f812 AC |
763 | } |
764 | return NULL; | |
d01949b6 AC |
765 | } |
766 | ||
c906108c SS |
767 | static struct target_ops remote_ops; |
768 | ||
769 | static struct target_ops extended_remote_ops; | |
770 | ||
6426a772 JM |
771 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
772 | ``forever'' still use the normal timeout mechanism. This is | |
773 | currently used by the ASYNC code to guarentee that target reads | |
774 | during the initial connect always time-out. Once getpkt has been | |
775 | modified to return a timeout indication and, in turn | |
776 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 777 | this can go away. */ |
6426a772 JM |
778 | static int wait_forever_enabled_p = 1; |
779 | ||
9a7071a8 JB |
780 | /* Allow the user to specify what sequence to send to the remote |
781 | when he requests a program interruption: Although ^C is usually | |
782 | what remote systems expect (this is the default, here), it is | |
783 | sometimes preferable to send a break. On other systems such | |
784 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
785 | is required in order to interrupt the execution. */ | |
786 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
787 | const char interrupt_sequence_break[] = "BREAK"; | |
788 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 789 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
790 | { |
791 | interrupt_sequence_control_c, | |
792 | interrupt_sequence_break, | |
793 | interrupt_sequence_break_g, | |
794 | NULL | |
795 | }; | |
796 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
797 | ||
798 | static void | |
799 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
800 | struct cmd_list_element *c, | |
801 | const char *value) | |
802 | { | |
803 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
804 | fprintf_filtered (file, | |
805 | _("Send the ASCII ETX character (Ctrl-c) " | |
806 | "to the remote target to interrupt the " | |
807 | "execution of the program.\n")); | |
808 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
809 | fprintf_filtered (file, | |
810 | _("send a break signal to the remote target " | |
811 | "to interrupt the execution of the program.\n")); | |
812 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
813 | fprintf_filtered (file, | |
814 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
815 | "the remote target to interrupt the execution " | |
816 | "of Linux kernel.\n")); | |
817 | else | |
818 | internal_error (__FILE__, __LINE__, | |
819 | _("Invalid value for interrupt_sequence_mode: %s."), | |
820 | interrupt_sequence_mode); | |
821 | } | |
6426a772 | 822 | |
9a7071a8 JB |
823 | /* This boolean variable specifies whether interrupt_sequence is sent |
824 | to the remote target when gdb connects to it. | |
825 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
826 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
827 | static int interrupt_on_connect = 0; | |
c906108c | 828 | |
9a7071a8 JB |
829 | /* This variable is used to implement the "set/show remotebreak" commands. |
830 | Since these commands are now deprecated in favor of "set/show remote | |
831 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
832 | static int remote_break; |
833 | ||
9a7071a8 JB |
834 | static void |
835 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
836 | { | |
837 | if (remote_break) | |
838 | interrupt_sequence_mode = interrupt_sequence_break; | |
839 | else | |
840 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
841 | } | |
842 | ||
843 | static void | |
844 | show_remotebreak (struct ui_file *file, int from_tty, | |
845 | struct cmd_list_element *c, | |
846 | const char *value) | |
847 | { | |
848 | } | |
849 | ||
c906108c SS |
850 | /* This variable sets the number of bits in an address that are to be |
851 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 852 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
853 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
854 | initial implementation of remote.c restricted the address sent in | |
855 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
856 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
857 | address was never sent. Since fixing this bug may cause a break in | |
858 | some remote targets this variable is principly provided to | |
23860348 | 859 | facilitate backward compatibility. */ |
c906108c | 860 | |
883b9c6c | 861 | static unsigned int remote_address_size; |
c906108c | 862 | |
75c99385 PA |
863 | /* Temporary to track who currently owns the terminal. See |
864 | remote_terminal_* for more details. */ | |
6426a772 JM |
865 | |
866 | static int remote_async_terminal_ours_p; | |
867 | ||
2d717e4f DJ |
868 | /* The executable file to use for "run" on the remote side. */ |
869 | ||
870 | static char *remote_exec_file = ""; | |
871 | ||
11cf8741 | 872 | \f |
11cf8741 | 873 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
874 | memory read/write packet. MIN (rsa->remote_packet_size, |
875 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 876 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
877 | (speed up transfers). The variables ``preferred_*'' (the user |
878 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 879 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
880 | |
881 | struct memory_packet_config | |
882 | { | |
883 | char *name; | |
884 | long size; | |
885 | int fixed_p; | |
886 | }; | |
887 | ||
888 | /* Compute the current size of a read/write packet. Since this makes | |
889 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
890 | ||
891 | static long | |
892 | get_memory_packet_size (struct memory_packet_config *config) | |
893 | { | |
d01949b6 | 894 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
895 | struct remote_arch_state *rsa = get_remote_arch_state (); |
896 | ||
11cf8741 JM |
897 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
898 | law?) that some hosts don't cope very well with large alloca() | |
899 | calls. Eventually the alloca() code will be replaced by calls to | |
900 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 901 | be lifted or removed. */ |
11cf8741 JM |
902 | #ifndef MAX_REMOTE_PACKET_SIZE |
903 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
904 | #endif | |
3de11b2e | 905 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 906 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 907 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
908 | #endif |
909 | long what_they_get; | |
910 | if (config->fixed_p) | |
911 | { | |
912 | if (config->size <= 0) | |
913 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
914 | else | |
915 | what_they_get = config->size; | |
916 | } | |
917 | else | |
918 | { | |
ea9c271d | 919 | what_they_get = get_remote_packet_size (); |
23860348 | 920 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
921 | if (config->size > 0 |
922 | && what_they_get > config->size) | |
923 | what_they_get = config->size; | |
be2a5f71 DJ |
924 | |
925 | /* Limit it to the size of the targets ``g'' response unless we have | |
926 | permission from the stub to use a larger packet size. */ | |
927 | if (rs->explicit_packet_size == 0 | |
928 | && rsa->actual_register_packet_size > 0 | |
929 | && what_they_get > rsa->actual_register_packet_size) | |
930 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
931 | } |
932 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
933 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
934 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
935 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
936 | |
937 | /* Make sure there is room in the global buffer for this packet | |
938 | (including its trailing NUL byte). */ | |
939 | if (rs->buf_size < what_they_get + 1) | |
940 | { | |
941 | rs->buf_size = 2 * what_they_get; | |
942 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
943 | } | |
944 | ||
11cf8741 JM |
945 | return what_they_get; |
946 | } | |
947 | ||
0df8b418 | 948 | /* Update the size of a read/write packet. If they user wants |
23860348 | 949 | something really big then do a sanity check. */ |
11cf8741 JM |
950 | |
951 | static void | |
952 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
953 | { | |
954 | int fixed_p = config->fixed_p; | |
955 | long size = config->size; | |
a744cf53 | 956 | |
11cf8741 | 957 | if (args == NULL) |
8a3fe4f8 | 958 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
959 | else if (strcmp (args, "hard") == 0 |
960 | || strcmp (args, "fixed") == 0) | |
961 | fixed_p = 1; | |
962 | else if (strcmp (args, "soft") == 0 | |
963 | || strcmp (args, "limit") == 0) | |
964 | fixed_p = 0; | |
965 | else | |
966 | { | |
967 | char *end; | |
a744cf53 | 968 | |
11cf8741 JM |
969 | size = strtoul (args, &end, 0); |
970 | if (args == end) | |
8a3fe4f8 | 971 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
972 | #if 0 |
973 | /* Instead of explicitly capping the size of a packet to | |
974 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
975 | instead allowed to set the size to something arbitrarily | |
23860348 | 976 | large. */ |
11cf8741 | 977 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 978 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
979 | #endif |
980 | } | |
23860348 | 981 | /* Extra checks? */ |
11cf8741 JM |
982 | if (fixed_p && !config->fixed_p) |
983 | { | |
e2e0b3e5 AC |
984 | if (! query (_("The target may not be able to correctly handle a %s\n" |
985 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 986 | config->name, size)) |
8a3fe4f8 | 987 | error (_("Packet size not changed.")); |
11cf8741 | 988 | } |
23860348 | 989 | /* Update the config. */ |
11cf8741 JM |
990 | config->fixed_p = fixed_p; |
991 | config->size = size; | |
992 | } | |
993 | ||
994 | static void | |
995 | show_memory_packet_size (struct memory_packet_config *config) | |
996 | { | |
a3f17187 | 997 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 998 | if (config->fixed_p) |
a3f17187 | 999 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
1000 | get_memory_packet_size (config)); |
1001 | else | |
a3f17187 | 1002 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
1003 | get_memory_packet_size (config)); |
1004 | } | |
1005 | ||
1006 | static struct memory_packet_config memory_write_packet_config = | |
1007 | { | |
1008 | "memory-write-packet-size", | |
1009 | }; | |
1010 | ||
1011 | static void | |
1012 | set_memory_write_packet_size (char *args, int from_tty) | |
1013 | { | |
1014 | set_memory_packet_size (args, &memory_write_packet_config); | |
1015 | } | |
1016 | ||
1017 | static void | |
1018 | show_memory_write_packet_size (char *args, int from_tty) | |
1019 | { | |
1020 | show_memory_packet_size (&memory_write_packet_config); | |
1021 | } | |
1022 | ||
1023 | static long | |
1024 | get_memory_write_packet_size (void) | |
1025 | { | |
1026 | return get_memory_packet_size (&memory_write_packet_config); | |
1027 | } | |
1028 | ||
1029 | static struct memory_packet_config memory_read_packet_config = | |
1030 | { | |
1031 | "memory-read-packet-size", | |
1032 | }; | |
1033 | ||
1034 | static void | |
1035 | set_memory_read_packet_size (char *args, int from_tty) | |
1036 | { | |
1037 | set_memory_packet_size (args, &memory_read_packet_config); | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | show_memory_read_packet_size (char *args, int from_tty) | |
1042 | { | |
1043 | show_memory_packet_size (&memory_read_packet_config); | |
1044 | } | |
1045 | ||
1046 | static long | |
1047 | get_memory_read_packet_size (void) | |
1048 | { | |
1049 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1050 | |
11cf8741 JM |
1051 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1052 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1053 | increased beyond this. */ |
1054 | if (size > get_remote_packet_size ()) | |
1055 | size = get_remote_packet_size (); | |
11cf8741 JM |
1056 | return size; |
1057 | } | |
1058 | ||
11cf8741 | 1059 | \f |
5a2468f5 | 1060 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1061 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1062 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1063 | |
1064 | enum packet_support | |
1065 | { | |
1066 | PACKET_SUPPORT_UNKNOWN = 0, | |
1067 | PACKET_ENABLE, | |
1068 | PACKET_DISABLE | |
1069 | }; | |
1070 | ||
5a2468f5 JM |
1071 | struct packet_config |
1072 | { | |
bb572ddd DJ |
1073 | const char *name; |
1074 | const char *title; | |
4082afcc PA |
1075 | |
1076 | /* If auto, GDB auto-detects support for this packet or feature, | |
1077 | either through qSupported, or by trying the packet and looking | |
1078 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1079 | packet. If false, the packet is disabled. Configs that don't |
1080 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1081 | enum auto_boolean detect; |
4082afcc PA |
1082 | |
1083 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1084 | enum packet_support support; |
1085 | }; | |
1086 | ||
d471ea57 | 1087 | /* Analyze a packet's return value and update the packet config |
23860348 | 1088 | accordingly. */ |
d471ea57 AC |
1089 | |
1090 | enum packet_result | |
1091 | { | |
1092 | PACKET_ERROR, | |
1093 | PACKET_OK, | |
1094 | PACKET_UNKNOWN | |
1095 | }; | |
1096 | ||
4082afcc PA |
1097 | static enum packet_support packet_config_support (struct packet_config *config); |
1098 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1099 | |
1100 | static void | |
fba45db2 | 1101 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1102 | { |
1103 | char *support = "internal-error"; | |
a744cf53 | 1104 | |
4082afcc | 1105 | switch (packet_config_support (config)) |
5a2468f5 JM |
1106 | { |
1107 | case PACKET_ENABLE: | |
1108 | support = "enabled"; | |
1109 | break; | |
1110 | case PACKET_DISABLE: | |
1111 | support = "disabled"; | |
1112 | break; | |
1113 | case PACKET_SUPPORT_UNKNOWN: | |
1114 | support = "unknown"; | |
1115 | break; | |
1116 | } | |
1117 | switch (config->detect) | |
1118 | { | |
7f19b9a2 | 1119 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1120 | printf_filtered (_("Support for the `%s' packet " |
1121 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1122 | config->name, support); |
5a2468f5 | 1123 | break; |
7f19b9a2 AC |
1124 | case AUTO_BOOLEAN_TRUE: |
1125 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1126 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1127 | config->name, support); | |
8e248173 | 1128 | break; |
5a2468f5 JM |
1129 | } |
1130 | } | |
1131 | ||
1132 | static void | |
bb572ddd DJ |
1133 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1134 | const char *title, int legacy) | |
d471ea57 | 1135 | { |
5a2468f5 JM |
1136 | char *set_doc; |
1137 | char *show_doc; | |
d471ea57 | 1138 | char *cmd_name; |
3ed07be4 | 1139 | |
5a2468f5 JM |
1140 | config->name = name; |
1141 | config->title = title; | |
b435e160 AC |
1142 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1143 | name, title); | |
3e43a32a MS |
1144 | show_doc = xstrprintf ("Show current use of remote " |
1145 | "protocol `%s' (%s) packet", | |
b435e160 | 1146 | name, title); |
d471ea57 | 1147 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1148 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1149 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1150 | &config->detect, set_doc, |
1151 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1152 | NULL, |
bb572ddd DJ |
1153 | show_remote_protocol_packet_cmd, |
1154 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1155 | /* The command code copies the documentation strings. */ |
1156 | xfree (set_doc); | |
1157 | xfree (show_doc); | |
23860348 | 1158 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1159 | if (legacy) |
1160 | { | |
1161 | char *legacy_name; | |
a744cf53 | 1162 | |
b435e160 | 1163 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1164 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1165 | &remote_set_cmdlist); |
d471ea57 | 1166 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1167 | &remote_show_cmdlist); |
d471ea57 | 1168 | } |
5a2468f5 JM |
1169 | } |
1170 | ||
d471ea57 | 1171 | static enum packet_result |
a76d924d | 1172 | packet_check_result (const char *buf) |
5a2468f5 | 1173 | { |
d471ea57 | 1174 | if (buf[0] != '\0') |
5a2468f5 | 1175 | { |
d471ea57 | 1176 | /* The stub recognized the packet request. Check that the |
23860348 | 1177 | operation succeeded. */ |
a76d924d DJ |
1178 | if (buf[0] == 'E' |
1179 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1180 | && buf[3] == '\0') | |
1181 | /* "Enn" - definitly an error. */ | |
1182 | return PACKET_ERROR; | |
1183 | ||
1184 | /* Always treat "E." as an error. This will be used for | |
1185 | more verbose error messages, such as E.memtypes. */ | |
1186 | if (buf[0] == 'E' && buf[1] == '.') | |
1187 | return PACKET_ERROR; | |
1188 | ||
1189 | /* The packet may or may not be OK. Just assume it is. */ | |
1190 | return PACKET_OK; | |
1191 | } | |
1192 | else | |
1193 | /* The stub does not support the packet. */ | |
1194 | return PACKET_UNKNOWN; | |
1195 | } | |
1196 | ||
1197 | static enum packet_result | |
1198 | packet_ok (const char *buf, struct packet_config *config) | |
1199 | { | |
1200 | enum packet_result result; | |
1201 | ||
4082afcc PA |
1202 | if (config->detect != AUTO_BOOLEAN_TRUE |
1203 | && config->support == PACKET_DISABLE) | |
1204 | internal_error (__FILE__, __LINE__, | |
1205 | _("packet_ok: attempt to use a disabled packet")); | |
1206 | ||
a76d924d DJ |
1207 | result = packet_check_result (buf); |
1208 | switch (result) | |
1209 | { | |
1210 | case PACKET_OK: | |
1211 | case PACKET_ERROR: | |
1212 | /* The stub recognized the packet request. */ | |
4082afcc | 1213 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1214 | { |
d471ea57 AC |
1215 | if (remote_debug) |
1216 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1217 | "Packet %s (%s) is supported\n", |
1218 | config->name, config->title); | |
d471ea57 | 1219 | config->support = PACKET_ENABLE; |
d471ea57 | 1220 | } |
a76d924d DJ |
1221 | break; |
1222 | case PACKET_UNKNOWN: | |
23860348 | 1223 | /* The stub does not support the packet. */ |
4082afcc PA |
1224 | if (config->detect == AUTO_BOOLEAN_AUTO |
1225 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1226 | { |
4082afcc PA |
1227 | /* If the stub previously indicated that the packet was |
1228 | supported then there is a protocol error. */ | |
1229 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1230 | config->name, config->title); | |
1231 | } | |
1232 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1233 | { | |
1234 | /* The user set it wrong. */ | |
1235 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1236 | config->name, config->title); | |
d471ea57 | 1237 | } |
4082afcc PA |
1238 | |
1239 | if (remote_debug) | |
1240 | fprintf_unfiltered (gdb_stdlog, | |
1241 | "Packet %s (%s) is NOT supported\n", | |
1242 | config->name, config->title); | |
1243 | config->support = PACKET_DISABLE; | |
a76d924d | 1244 | break; |
5a2468f5 | 1245 | } |
a76d924d DJ |
1246 | |
1247 | return result; | |
5a2468f5 JM |
1248 | } |
1249 | ||
444abaca DJ |
1250 | enum { |
1251 | PACKET_vCont = 0, | |
1252 | PACKET_X, | |
1253 | PACKET_qSymbol, | |
1254 | PACKET_P, | |
1255 | PACKET_p, | |
1256 | PACKET_Z0, | |
1257 | PACKET_Z1, | |
1258 | PACKET_Z2, | |
1259 | PACKET_Z3, | |
1260 | PACKET_Z4, | |
15a201c8 | 1261 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1262 | PACKET_vFile_open, |
1263 | PACKET_vFile_pread, | |
1264 | PACKET_vFile_pwrite, | |
1265 | PACKET_vFile_close, | |
1266 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1267 | PACKET_vFile_readlink, |
0a93529c | 1268 | PACKET_vFile_fstat, |
0876f84a | 1269 | PACKET_qXfer_auxv, |
23181151 | 1270 | PACKET_qXfer_features, |
c78fa86a | 1271 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1272 | PACKET_qXfer_libraries, |
2268b414 | 1273 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1274 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1275 | PACKET_qXfer_spu_read, |
1276 | PACKET_qXfer_spu_write, | |
07e059b5 | 1277 | PACKET_qXfer_osdata, |
dc146f7c | 1278 | PACKET_qXfer_threads, |
0fb4aa4b | 1279 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1280 | PACKET_qXfer_traceframe_info, |
169081d0 | 1281 | PACKET_qXfer_uib, |
711e434b | 1282 | PACKET_qGetTIBAddr, |
444abaca | 1283 | PACKET_qGetTLSAddr, |
be2a5f71 | 1284 | PACKET_qSupported, |
bd3eecc3 | 1285 | PACKET_qTStatus, |
89be2091 | 1286 | PACKET_QPassSignals, |
9b224c5e | 1287 | PACKET_QProgramSignals, |
936d2992 | 1288 | PACKET_qCRC, |
08388c79 | 1289 | PACKET_qSearch_memory, |
2d717e4f DJ |
1290 | PACKET_vAttach, |
1291 | PACKET_vRun, | |
a6f3e723 | 1292 | PACKET_QStartNoAckMode, |
82f73884 | 1293 | PACKET_vKill, |
4aa995e1 PA |
1294 | PACKET_qXfer_siginfo_read, |
1295 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1296 | PACKET_qAttached, |
4082afcc PA |
1297 | |
1298 | /* Support for conditional tracepoints. */ | |
782b2b07 | 1299 | PACKET_ConditionalTracepoints, |
4082afcc PA |
1300 | |
1301 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 1302 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
1303 | |
1304 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 1305 | PACKET_BreakpointCommands, |
4082afcc PA |
1306 | |
1307 | /* Support for fast tracepoints. */ | |
7a697b8d | 1308 | PACKET_FastTracepoints, |
4082afcc PA |
1309 | |
1310 | /* Support for static tracepoints. */ | |
0fb4aa4b | 1311 | PACKET_StaticTracepoints, |
4082afcc PA |
1312 | |
1313 | /* Support for installing tracepoints while a trace experiment is | |
1314 | running. */ | |
1e4d1764 | 1315 | PACKET_InstallInTrace, |
4082afcc | 1316 | |
40ab02ce MS |
1317 | PACKET_bc, |
1318 | PACKET_bs, | |
409873ef | 1319 | PACKET_TracepointSource, |
d914c394 | 1320 | PACKET_QAllow, |
78d85199 | 1321 | PACKET_qXfer_fdpic, |
03583c20 | 1322 | PACKET_QDisableRandomization, |
d1feda86 | 1323 | PACKET_QAgent, |
f6f899bf | 1324 | PACKET_QTBuffer_size, |
9accd112 MM |
1325 | PACKET_Qbtrace_off, |
1326 | PACKET_Qbtrace_bts, | |
b20a6524 | 1327 | PACKET_Qbtrace_pt, |
9accd112 | 1328 | PACKET_qXfer_btrace, |
4082afcc PA |
1329 | |
1330 | /* Support for the QNonStop packet. */ | |
1331 | PACKET_QNonStop, | |
1332 | ||
1333 | /* Support for multi-process extensions. */ | |
1334 | PACKET_multiprocess_feature, | |
1335 | ||
1336 | /* Support for enabling and disabling tracepoints while a trace | |
1337 | experiment is running. */ | |
1338 | PACKET_EnableDisableTracepoints_feature, | |
1339 | ||
1340 | /* Support for collecting strings using the tracenz bytecode. */ | |
1341 | PACKET_tracenz_feature, | |
1342 | ||
1343 | /* Support for continuing to run a trace experiment while GDB is | |
1344 | disconnected. */ | |
1345 | PACKET_DisconnectedTracing_feature, | |
1346 | ||
1347 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1348 | PACKET_augmented_libraries_svr4_read_feature, | |
1349 | ||
f4abbc16 MM |
1350 | /* Support for the qXfer:btrace-conf:read packet. */ |
1351 | PACKET_qXfer_btrace_conf, | |
1352 | ||
d33501a5 MM |
1353 | /* Support for the Qbtrace-conf:bts:size packet. */ |
1354 | PACKET_Qbtrace_conf_bts_size, | |
1355 | ||
f7e6eed5 PA |
1356 | /* Support for swbreak+ feature. */ |
1357 | PACKET_swbreak_feature, | |
1358 | ||
1359 | /* Support for hwbreak+ feature. */ | |
1360 | PACKET_hwbreak_feature, | |
1361 | ||
89245bc0 DB |
1362 | /* Support for fork events. */ |
1363 | PACKET_fork_event_feature, | |
1364 | ||
1365 | /* Support for vfork events. */ | |
1366 | PACKET_vfork_event_feature, | |
1367 | ||
b20a6524 MM |
1368 | /* Support for the Qbtrace-conf:pt:size packet. */ |
1369 | PACKET_Qbtrace_conf_pt_size, | |
1370 | ||
444abaca DJ |
1371 | PACKET_MAX |
1372 | }; | |
506fb367 | 1373 | |
444abaca | 1374 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 1375 | |
f7e6eed5 PA |
1376 | /* Returns the packet's corresponding "set remote foo-packet" command |
1377 | state. See struct packet_config for more details. */ | |
1378 | ||
1379 | static enum auto_boolean | |
1380 | packet_set_cmd_state (int packet) | |
1381 | { | |
1382 | return remote_protocol_packets[packet].detect; | |
1383 | } | |
1384 | ||
4082afcc PA |
1385 | /* Returns whether a given packet or feature is supported. This takes |
1386 | into account the state of the corresponding "set remote foo-packet" | |
1387 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 1388 | |
4082afcc PA |
1389 | static enum packet_support |
1390 | packet_config_support (struct packet_config *config) | |
1391 | { | |
1392 | switch (config->detect) | |
444abaca | 1393 | { |
4082afcc PA |
1394 | case AUTO_BOOLEAN_TRUE: |
1395 | return PACKET_ENABLE; | |
1396 | case AUTO_BOOLEAN_FALSE: | |
1397 | return PACKET_DISABLE; | |
1398 | case AUTO_BOOLEAN_AUTO: | |
1399 | return config->support; | |
1400 | default: | |
1401 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 1402 | } |
4082afcc PA |
1403 | } |
1404 | ||
1405 | /* Same as packet_config_support, but takes the packet's enum value as | |
1406 | argument. */ | |
1407 | ||
1408 | static enum packet_support | |
1409 | packet_support (int packet) | |
1410 | { | |
1411 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1412 | ||
1413 | return packet_config_support (config); | |
dc8acb97 MS |
1414 | } |
1415 | ||
5a2468f5 | 1416 | static void |
444abaca DJ |
1417 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1418 | struct cmd_list_element *c, | |
1419 | const char *value) | |
5a2468f5 | 1420 | { |
444abaca | 1421 | struct packet_config *packet; |
5a2468f5 | 1422 | |
444abaca DJ |
1423 | for (packet = remote_protocol_packets; |
1424 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1425 | packet++) | |
1426 | { | |
1427 | if (&packet->detect == c->var) | |
1428 | { | |
1429 | show_packet_config_cmd (packet); | |
1430 | return; | |
1431 | } | |
1432 | } | |
9b20d036 | 1433 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1434 | c->name); |
5a2468f5 JM |
1435 | } |
1436 | ||
d471ea57 AC |
1437 | /* Should we try one of the 'Z' requests? */ |
1438 | ||
1439 | enum Z_packet_type | |
1440 | { | |
1441 | Z_PACKET_SOFTWARE_BP, | |
1442 | Z_PACKET_HARDWARE_BP, | |
1443 | Z_PACKET_WRITE_WP, | |
1444 | Z_PACKET_READ_WP, | |
1445 | Z_PACKET_ACCESS_WP, | |
1446 | NR_Z_PACKET_TYPES | |
1447 | }; | |
96baa820 | 1448 | |
d471ea57 | 1449 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1450 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1451 | |
7f19b9a2 | 1452 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1453 | |
1454 | static void | |
fba45db2 KB |
1455 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1456 | struct cmd_list_element *c) | |
96baa820 | 1457 | { |
d471ea57 | 1458 | int i; |
a744cf53 | 1459 | |
d471ea57 | 1460 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 1461 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
1462 | } |
1463 | ||
1464 | static void | |
08546159 AC |
1465 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1466 | struct cmd_list_element *c, | |
1467 | const char *value) | |
96baa820 | 1468 | { |
d471ea57 | 1469 | int i; |
a744cf53 | 1470 | |
d471ea57 AC |
1471 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1472 | { | |
444abaca | 1473 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1474 | } |
96baa820 JM |
1475 | } |
1476 | ||
4082afcc PA |
1477 | /* Returns true if the multi-process extensions are in effect. */ |
1478 | ||
1479 | static int | |
1480 | remote_multi_process_p (struct remote_state *rs) | |
1481 | { | |
1482 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1483 | } | |
1484 | ||
de0d863e DB |
1485 | /* Returns true if fork events are supported. */ |
1486 | ||
1487 | static int | |
1488 | remote_fork_event_p (struct remote_state *rs) | |
1489 | { | |
1490 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1491 | } | |
1492 | ||
c269dbdb DB |
1493 | /* Returns true if vfork events are supported. */ |
1494 | ||
1495 | static int | |
1496 | remote_vfork_event_p (struct remote_state *rs) | |
1497 | { | |
1498 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1499 | } | |
1500 | ||
cbb8991c DB |
1501 | /* Insert fork catchpoint target routine. If fork events are enabled |
1502 | then return success, nothing more to do. */ | |
1503 | ||
1504 | static int | |
1505 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1506 | { | |
1507 | struct remote_state *rs = get_remote_state (); | |
1508 | ||
1509 | return !remote_fork_event_p (rs); | |
1510 | } | |
1511 | ||
1512 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1513 | return success. */ | |
1514 | ||
1515 | static int | |
1516 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1517 | { | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1522 | then return success, nothing more to do. */ | |
1523 | ||
1524 | static int | |
1525 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1526 | { | |
1527 | struct remote_state *rs = get_remote_state (); | |
1528 | ||
1529 | return !remote_vfork_event_p (rs); | |
1530 | } | |
1531 | ||
1532 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
1533 | return success. */ | |
1534 | ||
1535 | static int | |
1536 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1537 | { | |
1538 | return 0; | |
1539 | } | |
1540 | ||
23860348 | 1541 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
934b9bac JK |
1542 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1543 | static struct async_signal_handler *async_sigint_remote_token; | |
43ff13b4 | 1544 | |
74531fed PA |
1545 | \f |
1546 | /* Asynchronous signal handle registered as event loop source for | |
1547 | when we have pending events ready to be passed to the core. */ | |
1548 | ||
1549 | static struct async_event_handler *remote_async_inferior_event_token; | |
1550 | ||
c906108c SS |
1551 | \f |
1552 | ||
79d7f229 PA |
1553 | static ptid_t magic_null_ptid; |
1554 | static ptid_t not_sent_ptid; | |
1555 | static ptid_t any_thread_ptid; | |
1556 | ||
0b16c5cf PA |
1557 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1558 | detach instead of killing it when bailing out). */ | |
1559 | ||
1560 | static int | |
1561 | remote_query_attached (int pid) | |
1562 | { | |
1563 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1564 | size_t size = get_remote_packet_size (); |
0b16c5cf | 1565 | |
4082afcc | 1566 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
1567 | return 0; |
1568 | ||
1569 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1570 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1571 | else |
bba74b36 | 1572 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1573 | |
1574 | putpkt (rs->buf); | |
1575 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1576 | ||
1577 | switch (packet_ok (rs->buf, | |
1554e9be | 1578 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1579 | { |
1580 | case PACKET_OK: | |
1581 | if (strcmp (rs->buf, "1") == 0) | |
1582 | return 1; | |
1583 | break; | |
1584 | case PACKET_ERROR: | |
1585 | warning (_("Remote failure reply: %s"), rs->buf); | |
1586 | break; | |
1587 | case PACKET_UNKNOWN: | |
1588 | break; | |
1589 | } | |
1590 | ||
1591 | return 0; | |
1592 | } | |
1593 | ||
49c62f2e PA |
1594 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1595 | has been invented by GDB, instead of reported by the target. Since | |
1596 | we can be connected to a remote system before before knowing about | |
1597 | any inferior, mark the target with execution when we find the first | |
1598 | inferior. If ATTACHED is 1, then we had just attached to this | |
1599 | inferior. If it is 0, then we just created this inferior. If it | |
1600 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
1601 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1602 | attempt to open this inferior's executable as the main executable | |
1603 | if no main executable is open already. */ | |
1941c569 PA |
1604 | |
1605 | static struct inferior * | |
1b6e6f5c GB |
1606 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1607 | int try_open_exec) | |
1941c569 | 1608 | { |
1941c569 PA |
1609 | struct inferior *inf; |
1610 | ||
0b16c5cf PA |
1611 | /* Check whether this process we're learning about is to be |
1612 | considered attached, or if is to be considered to have been | |
1613 | spawned by the stub. */ | |
1614 | if (attached == -1) | |
1615 | attached = remote_query_attached (pid); | |
1616 | ||
f5656ead | 1617 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1618 | { |
1619 | /* If the target shares code across all inferiors, then every | |
1620 | attach adds a new inferior. */ | |
1621 | inf = add_inferior (pid); | |
1622 | ||
1623 | /* ... and every inferior is bound to the same program space. | |
1624 | However, each inferior may still have its own address | |
1625 | space. */ | |
1626 | inf->aspace = maybe_new_address_space (); | |
1627 | inf->pspace = current_program_space; | |
1628 | } | |
1629 | else | |
1630 | { | |
1631 | /* In the traditional debugging scenario, there's a 1-1 match | |
1632 | between program/address spaces. We simply bind the inferior | |
1633 | to the program space's address space. */ | |
1634 | inf = current_inferior (); | |
1635 | inferior_appeared (inf, pid); | |
1636 | } | |
1941c569 | 1637 | |
0b16c5cf | 1638 | inf->attach_flag = attached; |
49c62f2e | 1639 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1640 | |
1b6e6f5c GB |
1641 | /* If no main executable is currently open then attempt to |
1642 | open the file that was executed to create this inferior. */ | |
835205d0 | 1643 | if (try_open_exec && get_exec_file (0) == NULL) |
1b6e6f5c GB |
1644 | exec_file_locate_attach (pid, 1); |
1645 | ||
1941c569 PA |
1646 | return inf; |
1647 | } | |
1648 | ||
1649 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1650 | according to RUNNING. */ | |
1651 | ||
c906108c | 1652 | static void |
1941c569 | 1653 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1654 | { |
b7ea362b PA |
1655 | struct remote_state *rs = get_remote_state (); |
1656 | ||
1657 | /* GDB historically didn't pull threads in the initial connection | |
1658 | setup. If the remote target doesn't even have a concept of | |
1659 | threads (e.g., a bare-metal target), even if internally we | |
1660 | consider that a single-threaded target, mentioning a new thread | |
1661 | might be confusing to the user. Be silent then, preserving the | |
1662 | age old behavior. */ | |
1663 | if (rs->starting_up) | |
1664 | add_thread_silent (ptid); | |
1665 | else | |
1666 | add_thread (ptid); | |
1941c569 PA |
1667 | |
1668 | set_executing (ptid, running); | |
1669 | set_running (ptid, running); | |
1670 | } | |
1671 | ||
1672 | /* Come here when we learn about a thread id from the remote target. | |
1673 | It may be the first time we hear about such thread, so take the | |
1674 | opportunity to add it to GDB's thread list. In case this is the | |
1675 | first time we're noticing its corresponding inferior, add it to | |
1676 | GDB's inferior list as well. */ | |
1677 | ||
1678 | static void | |
1679 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1680 | { | |
c906108c SS |
1681 | /* If this is a new thread, add it to GDB's thread list. |
1682 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1683 | |
1684 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1685 | { | |
1686 | /* We're seeing an event on a thread id we knew had exited. | |
1687 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1688 | remote_add_thread (currthread, running); |
82f73884 PA |
1689 | return; |
1690 | } | |
1691 | ||
79d7f229 | 1692 | if (!in_thread_list (currthread)) |
c0a2216e | 1693 | { |
1941c569 | 1694 | struct inferior *inf = NULL; |
bad34192 | 1695 | int pid = ptid_get_pid (currthread); |
1941c569 | 1696 | |
bad34192 PA |
1697 | if (ptid_is_pid (inferior_ptid) |
1698 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1699 | { |
1700 | /* inferior_ptid has no thread member yet. This can happen | |
1701 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1702 | stub doesn't support qC. This is the first stop reported | |
1703 | after an attach, so this is the main thread. Update the | |
1704 | ptid in the thread list. */ | |
bad34192 PA |
1705 | if (in_thread_list (pid_to_ptid (pid))) |
1706 | thread_change_ptid (inferior_ptid, currthread); | |
1707 | else | |
1708 | { | |
1709 | remote_add_thread (currthread, running); | |
1710 | inferior_ptid = currthread; | |
1711 | } | |
dc146f7c | 1712 | return; |
c0a2216e | 1713 | } |
82f73884 PA |
1714 | |
1715 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1716 | { |
1717 | /* inferior_ptid is not set yet. This can happen with the | |
1718 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1719 | doesn't support qC. This is the first stop reported | |
1720 | after an attach, so this is the main thread. Update the | |
1721 | ptid in the thread list. */ | |
dc146f7c | 1722 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1723 | return; |
c0a2216e | 1724 | } |
82f73884 | 1725 | |
29c87f7f PA |
1726 | /* When connecting to a target remote, or to a target |
1727 | extended-remote which already was debugging an inferior, we | |
1728 | may not know about it yet. Add it before adding its child | |
1729 | thread, so notifications are emitted in a sensible order. */ | |
1730 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1731 | { |
1732 | struct remote_state *rs = get_remote_state (); | |
1733 | int fake_pid_p = !remote_multi_process_p (rs); | |
1734 | ||
1735 | inf = remote_add_inferior (fake_pid_p, | |
1b6e6f5c | 1736 | ptid_get_pid (currthread), -1, 1); |
49c62f2e | 1737 | } |
29c87f7f | 1738 | |
82f73884 | 1739 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1740 | remote_add_thread (currthread, running); |
1741 | ||
1742 | /* If we found a new inferior, let the common code do whatever | |
1743 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
1744 | breakpoints), unless we're just setting up an all-stop |
1745 | connection. */ | |
1941c569 | 1746 | if (inf != NULL) |
b7ea362b PA |
1747 | { |
1748 | struct remote_state *rs = get_remote_state (); | |
1749 | ||
1750 | if (non_stop || !rs->starting_up) | |
1751 | notice_new_inferior (currthread, running, 0); | |
1752 | } | |
c0a2216e | 1753 | } |
c906108c SS |
1754 | } |
1755 | ||
dc146f7c VP |
1756 | /* Return the private thread data, creating it if necessary. */ |
1757 | ||
70221824 | 1758 | static struct private_thread_info * |
dc146f7c VP |
1759 | demand_private_info (ptid_t ptid) |
1760 | { | |
1761 | struct thread_info *info = find_thread_ptid (ptid); | |
1762 | ||
1763 | gdb_assert (info); | |
1764 | ||
fe978cb0 | 1765 | if (!info->priv) |
dc146f7c | 1766 | { |
fe978cb0 | 1767 | info->priv = xmalloc (sizeof (*(info->priv))); |
dc146f7c | 1768 | info->private_dtor = free_private_thread_info; |
fe978cb0 PA |
1769 | info->priv->core = -1; |
1770 | info->priv->extra = 0; | |
dc146f7c VP |
1771 | } |
1772 | ||
fe978cb0 | 1773 | return info->priv; |
dc146f7c VP |
1774 | } |
1775 | ||
74531fed PA |
1776 | /* Call this function as a result of |
1777 | 1) A halt indication (T packet) containing a thread id | |
1778 | 2) A direct query of currthread | |
0df8b418 | 1779 | 3) Successful execution of set thread */ |
74531fed PA |
1780 | |
1781 | static void | |
47f8a51d | 1782 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 1783 | { |
47f8a51d | 1784 | rs->general_thread = currthread; |
74531fed PA |
1785 | } |
1786 | ||
89be2091 DJ |
1787 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1788 | it can simply pass through to the inferior without reporting. */ | |
1789 | ||
1790 | static void | |
94bedb42 TT |
1791 | remote_pass_signals (struct target_ops *self, |
1792 | int numsigs, unsigned char *pass_signals) | |
89be2091 | 1793 | { |
4082afcc | 1794 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
1795 | { |
1796 | char *pass_packet, *p; | |
89be2091 | 1797 | int count = 0, i; |
747dc59d | 1798 | struct remote_state *rs = get_remote_state (); |
89be2091 DJ |
1799 | |
1800 | gdb_assert (numsigs < 256); | |
1801 | for (i = 0; i < numsigs; i++) | |
1802 | { | |
2455069d | 1803 | if (pass_signals[i]) |
89be2091 DJ |
1804 | count++; |
1805 | } | |
1806 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1807 | strcpy (pass_packet, "QPassSignals:"); | |
1808 | p = pass_packet + strlen (pass_packet); | |
1809 | for (i = 0; i < numsigs; i++) | |
1810 | { | |
2455069d | 1811 | if (pass_signals[i]) |
89be2091 DJ |
1812 | { |
1813 | if (i >= 16) | |
1814 | *p++ = tohex (i >> 4); | |
1815 | *p++ = tohex (i & 15); | |
1816 | if (count) | |
1817 | *p++ = ';'; | |
1818 | else | |
1819 | break; | |
1820 | count--; | |
1821 | } | |
1822 | } | |
1823 | *p = 0; | |
747dc59d | 1824 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 1825 | { |
89be2091 DJ |
1826 | putpkt (pass_packet); |
1827 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1828 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
1829 | if (rs->last_pass_packet) |
1830 | xfree (rs->last_pass_packet); | |
1831 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
1832 | } |
1833 | else | |
1834 | xfree (pass_packet); | |
1835 | } | |
1836 | } | |
1837 | ||
9b224c5e PA |
1838 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1839 | signals it should pass through to the inferior when detaching. */ | |
1840 | ||
1841 | static void | |
daf5e9b6 TT |
1842 | remote_program_signals (struct target_ops *self, |
1843 | int numsigs, unsigned char *signals) | |
9b224c5e | 1844 | { |
4082afcc | 1845 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
1846 | { |
1847 | char *packet, *p; | |
1848 | int count = 0, i; | |
5e4a05c4 | 1849 | struct remote_state *rs = get_remote_state (); |
9b224c5e PA |
1850 | |
1851 | gdb_assert (numsigs < 256); | |
1852 | for (i = 0; i < numsigs; i++) | |
1853 | { | |
1854 | if (signals[i]) | |
1855 | count++; | |
1856 | } | |
1857 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1858 | strcpy (packet, "QProgramSignals:"); | |
1859 | p = packet + strlen (packet); | |
1860 | for (i = 0; i < numsigs; i++) | |
1861 | { | |
1862 | if (signal_pass_state (i)) | |
1863 | { | |
1864 | if (i >= 16) | |
1865 | *p++ = tohex (i >> 4); | |
1866 | *p++ = tohex (i & 15); | |
1867 | if (count) | |
1868 | *p++ = ';'; | |
1869 | else | |
1870 | break; | |
1871 | count--; | |
1872 | } | |
1873 | } | |
1874 | *p = 0; | |
5e4a05c4 TT |
1875 | if (!rs->last_program_signals_packet |
1876 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 1877 | { |
9b224c5e PA |
1878 | putpkt (packet); |
1879 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8dc5b319 | 1880 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
1881 | xfree (rs->last_program_signals_packet); |
1882 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
1883 | } |
1884 | else | |
1885 | xfree (packet); | |
1886 | } | |
1887 | } | |
1888 | ||
79d7f229 PA |
1889 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1890 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1891 | thread. If GEN is set, set the general thread, if not, then set | |
1892 | the step/continue thread. */ | |
c906108c | 1893 | static void |
79d7f229 | 1894 | set_thread (struct ptid ptid, int gen) |
c906108c | 1895 | { |
d01949b6 | 1896 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 1897 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
6d820c5c | 1898 | char *buf = rs->buf; |
79d7f229 | 1899 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1900 | |
79d7f229 | 1901 | if (ptid_equal (state, ptid)) |
c906108c SS |
1902 | return; |
1903 | ||
79d7f229 PA |
1904 | *buf++ = 'H'; |
1905 | *buf++ = gen ? 'g' : 'c'; | |
1906 | if (ptid_equal (ptid, magic_null_ptid)) | |
1907 | xsnprintf (buf, endbuf - buf, "0"); | |
1908 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1909 | xsnprintf (buf, endbuf - buf, "0"); | |
1910 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1911 | xsnprintf (buf, endbuf - buf, "-1"); | |
1912 | else | |
82f73884 | 1913 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1914 | putpkt (rs->buf); |
6d820c5c | 1915 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1916 | if (gen) |
47f8a51d | 1917 | rs->general_thread = ptid; |
c906108c | 1918 | else |
47f8a51d | 1919 | rs->continue_thread = ptid; |
c906108c | 1920 | } |
79d7f229 PA |
1921 | |
1922 | static void | |
1923 | set_general_thread (struct ptid ptid) | |
1924 | { | |
1925 | set_thread (ptid, 1); | |
1926 | } | |
1927 | ||
1928 | static void | |
1929 | set_continue_thread (struct ptid ptid) | |
1930 | { | |
1931 | set_thread (ptid, 0); | |
1932 | } | |
1933 | ||
3c9c4b83 PA |
1934 | /* Change the remote current process. Which thread within the process |
1935 | ends up selected isn't important, as long as it is the same process | |
1936 | as what INFERIOR_PTID points to. | |
1937 | ||
1938 | This comes from that fact that there is no explicit notion of | |
1939 | "selected process" in the protocol. The selected process for | |
1940 | general operations is the process the selected general thread | |
1941 | belongs to. */ | |
1942 | ||
1943 | static void | |
1944 | set_general_process (void) | |
1945 | { | |
1946 | struct remote_state *rs = get_remote_state (); | |
1947 | ||
1948 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1949 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1950 | return; |
1951 | ||
1952 | /* We only need to change the remote current thread if it's pointing | |
1953 | at some other process. */ | |
47f8a51d | 1954 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
3c9c4b83 PA |
1955 | set_general_thread (inferior_ptid); |
1956 | } | |
1957 | ||
c906108c | 1958 | \f |
7d1a114c PA |
1959 | /* Return nonzero if this is the main thread that we made up ourselves |
1960 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
1961 | |
1962 | static int | |
7d1a114c | 1963 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1964 | { |
6d820c5c | 1965 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1966 | char *p, *endp; |
c906108c | 1967 | |
c0a2216e PA |
1968 | if (ptid_equal (ptid, magic_null_ptid)) |
1969 | /* The main thread is always alive. */ | |
1970 | return 1; | |
1971 | ||
ba348170 | 1972 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
c0a2216e PA |
1973 | /* The main thread is always alive. This can happen after a |
1974 | vAttach, if the remote side doesn't support | |
1975 | multi-threading. */ | |
1976 | return 1; | |
1977 | ||
7d1a114c PA |
1978 | return 0; |
1979 | } | |
1980 | ||
1981 | /* Return nonzero if the thread PTID is still alive on the remote | |
1982 | system. */ | |
1983 | ||
1984 | static int | |
1985 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1986 | { | |
1987 | struct remote_state *rs = get_remote_state (); | |
1988 | char *p, *endp; | |
1989 | ||
1990 | /* Check if this is a thread that we made up ourselves to model | |
1991 | non-threaded targets as single-threaded. */ | |
1992 | if (remote_thread_always_alive (ops, ptid)) | |
1993 | return 1; | |
1994 | ||
82f73884 PA |
1995 | p = rs->buf; |
1996 | endp = rs->buf + get_remote_packet_size (); | |
1997 | ||
1998 | *p++ = 'T'; | |
1999 | write_ptid (p, endp, ptid); | |
2000 | ||
2e9f7625 | 2001 | putpkt (rs->buf); |
6d820c5c | 2002 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2003 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2004 | } |
2005 | ||
2006 | /* About these extended threadlist and threadinfo packets. They are | |
2007 | variable length packets but, the fields within them are often fixed | |
2008 | length. They are redundent enough to send over UDP as is the | |
2009 | remote protocol in general. There is a matching unit test module | |
2010 | in libstub. */ | |
2011 | ||
23860348 | 2012 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2013 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2014 | changable. */ |
cce74817 JM |
2015 | |
2016 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2017 | Plan to fix this. */ |
cce74817 | 2018 | |
23860348 | 2019 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2020 | |
9d1f7ab2 | 2021 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2022 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2023 | |
2024 | struct gdb_ext_thread_info | |
c5aa993b | 2025 | { |
23860348 | 2026 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2027 | int active; /* Has state interesting to GDB? |
23860348 | 2028 | regs, stack. */ |
2bc416ba | 2029 | char display[256]; /* Brief state display, name, |
cedea757 | 2030 | blocked/suspended. */ |
23860348 | 2031 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2032 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2033 | whatever. */ |
c5aa993b | 2034 | }; |
cce74817 JM |
2035 | |
2036 | /* The volume of remote transfers can be limited by submitting | |
2037 | a mask containing bits specifying the desired information. | |
2038 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2039 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2040 | |
2041 | #define TAG_THREADID 1 | |
2042 | #define TAG_EXISTS 2 | |
2043 | #define TAG_DISPLAY 4 | |
2044 | #define TAG_THREADNAME 8 | |
c5aa993b | 2045 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2046 | |
23860348 | 2047 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2048 | |
a14ed312 | 2049 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2050 | |
a14ed312 | 2051 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2052 | |
a14ed312 | 2053 | static char *pack_int (char *buf, int value); |
cce74817 | 2054 | |
a14ed312 | 2055 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2056 | |
a14ed312 | 2057 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2058 | |
23860348 | 2059 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2060 | |
23860348 | 2061 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2062 | |
23860348 | 2063 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2064 | |
23860348 | 2065 | static int threadref_to_int (threadref *ref); |
cce74817 | 2066 | |
23860348 | 2067 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2068 | |
23860348 | 2069 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2070 | |
2bc416ba | 2071 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2072 | threadref *id); |
cce74817 | 2073 | |
a14ed312 | 2074 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 2075 | threadref *expectedref, |
a14ed312 KB |
2076 | struct gdb_ext_thread_info |
2077 | *info); | |
cce74817 JM |
2078 | |
2079 | ||
2bc416ba | 2080 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 2081 | int fieldset, /*TAG mask */ |
a14ed312 | 2082 | struct gdb_ext_thread_info *info); |
cce74817 | 2083 | |
a14ed312 KB |
2084 | static char *pack_threadlist_request (char *pkt, int startflag, |
2085 | int threadcount, | |
23860348 | 2086 | threadref *nextthread); |
cce74817 | 2087 | |
a14ed312 KB |
2088 | static int parse_threadlist_response (char *pkt, |
2089 | int result_limit, | |
23860348 | 2090 | threadref *original_echo, |
2bc416ba | 2091 | threadref *resultlist, |
23860348 | 2092 | int *doneflag); |
cce74817 | 2093 | |
a14ed312 | 2094 | static int remote_get_threadlist (int startflag, |
23860348 | 2095 | threadref *nextthread, |
a14ed312 KB |
2096 | int result_limit, |
2097 | int *done, | |
2bc416ba | 2098 | int *result_count, |
23860348 | 2099 | threadref *threadlist); |
cce74817 | 2100 | |
23860348 | 2101 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 2102 | |
a14ed312 KB |
2103 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
2104 | void *context, int looplimit); | |
cce74817 | 2105 | |
23860348 | 2106 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2107 | |
82f73884 PA |
2108 | |
2109 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2110 | buffer we're allowed to write to. Returns | |
2111 | BUF+CHARACTERS_WRITTEN. */ | |
2112 | ||
2113 | static char * | |
2114 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2115 | { | |
2116 | int pid, tid; | |
2117 | struct remote_state *rs = get_remote_state (); | |
2118 | ||
2119 | if (remote_multi_process_p (rs)) | |
2120 | { | |
2121 | pid = ptid_get_pid (ptid); | |
2122 | if (pid < 0) | |
2123 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2124 | else | |
2125 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2126 | } | |
ba348170 | 2127 | tid = ptid_get_lwp (ptid); |
82f73884 PA |
2128 | if (tid < 0) |
2129 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2130 | else | |
2131 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2132 | ||
2133 | return buf; | |
2134 | } | |
2135 | ||
2136 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2137 | passed the last parsed char. Returns null_ptid on error. */ | |
2138 | ||
2139 | static ptid_t | |
2140 | read_ptid (char *buf, char **obuf) | |
2141 | { | |
2142 | char *p = buf; | |
2143 | char *pp; | |
2144 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
2145 | |
2146 | if (*p == 'p') | |
2147 | { | |
2148 | /* Multi-process ptid. */ | |
2149 | pp = unpack_varlen_hex (p + 1, &pid); | |
2150 | if (*pp != '.') | |
b37520b6 | 2151 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2152 | |
2153 | p = pp; | |
2154 | pp = unpack_varlen_hex (p + 1, &tid); | |
2155 | if (obuf) | |
2156 | *obuf = pp; | |
ba348170 | 2157 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2158 | } |
2159 | ||
2160 | /* No multi-process. Just a tid. */ | |
2161 | pp = unpack_varlen_hex (p, &tid); | |
2162 | ||
c9f35b34 KB |
2163 | /* Return null_ptid when no thread id is found. */ |
2164 | if (p == pp) | |
2165 | { | |
2166 | if (obuf) | |
2167 | *obuf = pp; | |
2168 | return null_ptid; | |
2169 | } | |
2170 | ||
82f73884 | 2171 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2172 | what's in inferior_ptid, unless it's null at this point. If so, |
2173 | then since there's no way to know the pid of the reported | |
2174 | threads, use the magic number. */ | |
2175 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2176 | pid = ptid_get_pid (magic_null_ptid); | |
2177 | else | |
2178 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2179 | |
2180 | if (obuf) | |
2181 | *obuf = pp; | |
ba348170 | 2182 | return ptid_build (pid, tid, 0); |
82f73884 PA |
2183 | } |
2184 | ||
c906108c | 2185 | static int |
fba45db2 | 2186 | stubhex (int ch) |
c906108c SS |
2187 | { |
2188 | if (ch >= 'a' && ch <= 'f') | |
2189 | return ch - 'a' + 10; | |
2190 | if (ch >= '0' && ch <= '9') | |
2191 | return ch - '0'; | |
2192 | if (ch >= 'A' && ch <= 'F') | |
2193 | return ch - 'A' + 10; | |
2194 | return -1; | |
2195 | } | |
2196 | ||
2197 | static int | |
fba45db2 | 2198 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2199 | { |
2200 | int nibble; | |
2201 | int retval = 0; | |
2202 | ||
2203 | while (fieldlength) | |
2204 | { | |
2205 | nibble = stubhex (*buff++); | |
2206 | retval |= nibble; | |
2207 | fieldlength--; | |
2208 | if (fieldlength) | |
2209 | retval = retval << 4; | |
2210 | } | |
2211 | return retval; | |
2212 | } | |
2213 | ||
c906108c | 2214 | static char * |
fba45db2 | 2215 | unpack_nibble (char *buf, int *val) |
c906108c | 2216 | { |
b7589f7d | 2217 | *val = fromhex (*buf++); |
c906108c SS |
2218 | return buf; |
2219 | } | |
2220 | ||
c906108c | 2221 | static char * |
fba45db2 | 2222 | unpack_byte (char *buf, int *value) |
c906108c SS |
2223 | { |
2224 | *value = stub_unpack_int (buf, 2); | |
2225 | return buf + 2; | |
2226 | } | |
2227 | ||
2228 | static char * | |
fba45db2 | 2229 | pack_int (char *buf, int value) |
c906108c SS |
2230 | { |
2231 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2232 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2233 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2234 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2235 | return buf; | |
2236 | } | |
2237 | ||
2238 | static char * | |
fba45db2 | 2239 | unpack_int (char *buf, int *value) |
c906108c SS |
2240 | { |
2241 | *value = stub_unpack_int (buf, 8); | |
2242 | return buf + 8; | |
2243 | } | |
2244 | ||
23860348 | 2245 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2246 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2247 | |
2248 | static char * | |
fba45db2 | 2249 | pack_string (char *pkt, char *string) |
c906108c SS |
2250 | { |
2251 | char ch; | |
2252 | int len; | |
2253 | ||
2254 | len = strlen (string); | |
2255 | if (len > 200) | |
23860348 | 2256 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2257 | pkt = pack_hex_byte (pkt, len); |
2258 | while (len-- > 0) | |
2259 | { | |
2260 | ch = *string++; | |
2261 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2262 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2263 | *pkt++ = ch; |
2264 | } | |
2265 | return pkt; | |
2266 | } | |
2267 | #endif /* 0 (unused) */ | |
2268 | ||
2269 | static char * | |
fba45db2 | 2270 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2271 | { |
2272 | while (length--) | |
2273 | *dest++ = *src++; | |
2274 | *dest = '\0'; | |
2275 | return src; | |
2276 | } | |
2277 | ||
2278 | static char * | |
fba45db2 | 2279 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2280 | { |
2281 | char *limit; | |
2282 | unsigned char *altid; | |
2283 | ||
2284 | altid = (unsigned char *) id; | |
2285 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2286 | while (pkt < limit) | |
2287 | pkt = pack_hex_byte (pkt, *altid++); | |
2288 | return pkt; | |
2289 | } | |
2290 | ||
2291 | ||
2292 | static char * | |
fba45db2 | 2293 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2294 | { |
2295 | char *altref; | |
2296 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2297 | int x, y; | |
2298 | ||
2299 | altref = (char *) id; | |
2300 | ||
2301 | while (inbuf < limit) | |
2302 | { | |
2303 | x = stubhex (*inbuf++); | |
2304 | y = stubhex (*inbuf++); | |
2305 | *altref++ = (x << 4) | y; | |
2306 | } | |
2307 | return inbuf; | |
2308 | } | |
2309 | ||
2310 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2311 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2312 | to use 64bit thread references internally. This is an adapter |
2313 | function. */ | |
2314 | ||
2315 | void | |
fba45db2 | 2316 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2317 | { |
2318 | unsigned char *scan; | |
2319 | ||
2320 | scan = (unsigned char *) id; | |
2321 | { | |
2322 | int i = 4; | |
2323 | while (i--) | |
2324 | *scan++ = 0; | |
2325 | } | |
2326 | *scan++ = (value >> 24) & 0xff; | |
2327 | *scan++ = (value >> 16) & 0xff; | |
2328 | *scan++ = (value >> 8) & 0xff; | |
2329 | *scan++ = (value & 0xff); | |
2330 | } | |
2331 | ||
2332 | static int | |
fba45db2 | 2333 | threadref_to_int (threadref *ref) |
c906108c SS |
2334 | { |
2335 | int i, value = 0; | |
2336 | unsigned char *scan; | |
2337 | ||
cfd77fa1 | 2338 | scan = *ref; |
c906108c SS |
2339 | scan += 4; |
2340 | i = 4; | |
2341 | while (i-- > 0) | |
2342 | value = (value << 8) | ((*scan++) & 0xff); | |
2343 | return value; | |
2344 | } | |
2345 | ||
2346 | static void | |
fba45db2 | 2347 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2348 | { |
2349 | int i; | |
2350 | unsigned char *csrc, *cdest; | |
2351 | ||
2352 | csrc = (unsigned char *) src; | |
2353 | cdest = (unsigned char *) dest; | |
2354 | i = 8; | |
2355 | while (i--) | |
2356 | *cdest++ = *csrc++; | |
2357 | } | |
2358 | ||
2359 | static int | |
fba45db2 | 2360 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2361 | { |
23860348 | 2362 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2363 | #if 0 |
2364 | unsigned char *srcp, *destp; | |
2365 | int i, result; | |
2366 | srcp = (char *) src; | |
2367 | destp = (char *) dest; | |
2368 | ||
2369 | result = 1; | |
2370 | while (i-- > 0) | |
2371 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2372 | return result; | |
2373 | #endif | |
2374 | return 1; | |
2375 | } | |
2376 | ||
2377 | /* | |
c5aa993b JM |
2378 | threadid:1, # always request threadid |
2379 | context_exists:2, | |
2380 | display:4, | |
2381 | unique_name:8, | |
2382 | more_display:16 | |
2383 | */ | |
c906108c SS |
2384 | |
2385 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2386 | ||
2387 | static char * | |
fba45db2 | 2388 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2389 | { |
23860348 MS |
2390 | *pkt++ = 'q'; /* Info Query */ |
2391 | *pkt++ = 'P'; /* process or thread info */ | |
2392 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2393 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2394 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2395 | return pkt; |
2396 | } | |
2397 | ||
23860348 | 2398 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2399 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2400 | add more fields as time goes by. */ |
c906108c | 2401 | |
23860348 | 2402 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2403 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2404 | fetch registers and its stack? */ |
c5aa993b | 2405 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2406 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2407 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2408 | the process. */ |
c906108c SS |
2409 | |
2410 | static int | |
fba45db2 KB |
2411 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2412 | struct gdb_ext_thread_info *info) | |
c906108c | 2413 | { |
d01949b6 | 2414 | struct remote_state *rs = get_remote_state (); |
c906108c | 2415 | int mask, length; |
cfd77fa1 | 2416 | int tag; |
c906108c | 2417 | threadref ref; |
6d820c5c | 2418 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2419 | int retval = 1; |
2420 | ||
23860348 | 2421 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2422 | info->active = 0; |
2423 | info->display[0] = '\0'; | |
2424 | info->shortname[0] = '\0'; | |
2425 | info->more_display[0] = '\0'; | |
2426 | ||
23860348 MS |
2427 | /* Assume the characters indicating the packet type have been |
2428 | stripped. */ | |
c906108c SS |
2429 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2430 | pkt = unpack_threadid (pkt, &ref); | |
2431 | ||
2432 | if (mask == 0) | |
8a3fe4f8 | 2433 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2434 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2435 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2436 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2437 | return 0; |
2438 | } | |
2439 | copy_threadref (&info->threadid, &ref); | |
2440 | ||
23860348 | 2441 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2442 | |
23860348 MS |
2443 | /* Packets are terminated with nulls. */ |
2444 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2445 | { |
2446 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2447 | pkt = unpack_byte (pkt, &length); /* length */ |
2448 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2449 | { |
8a3fe4f8 | 2450 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2451 | retval = 0; |
2452 | break; | |
2453 | } | |
2454 | if (tag == TAG_THREADID) | |
2455 | { | |
2456 | if (length != 16) | |
2457 | { | |
8a3fe4f8 | 2458 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2459 | retval = 0; |
2460 | break; | |
2461 | } | |
2462 | pkt = unpack_threadid (pkt, &ref); | |
2463 | mask = mask & ~TAG_THREADID; | |
2464 | continue; | |
2465 | } | |
2466 | if (tag == TAG_EXISTS) | |
2467 | { | |
2468 | info->active = stub_unpack_int (pkt, length); | |
2469 | pkt += length; | |
2470 | mask = mask & ~(TAG_EXISTS); | |
2471 | if (length > 8) | |
2472 | { | |
8a3fe4f8 | 2473 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2474 | retval = 0; |
2475 | break; | |
2476 | } | |
2477 | continue; | |
2478 | } | |
2479 | if (tag == TAG_THREADNAME) | |
2480 | { | |
2481 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2482 | mask = mask & ~TAG_THREADNAME; | |
2483 | continue; | |
2484 | } | |
2485 | if (tag == TAG_DISPLAY) | |
2486 | { | |
2487 | pkt = unpack_string (pkt, &info->display[0], length); | |
2488 | mask = mask & ~TAG_DISPLAY; | |
2489 | continue; | |
2490 | } | |
2491 | if (tag == TAG_MOREDISPLAY) | |
2492 | { | |
2493 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2494 | mask = mask & ~TAG_MOREDISPLAY; | |
2495 | continue; | |
2496 | } | |
8a3fe4f8 | 2497 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2498 | break; /* Not a tag we know about. */ |
c906108c SS |
2499 | } |
2500 | return retval; | |
2501 | } | |
2502 | ||
2503 | static int | |
fba45db2 KB |
2504 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2505 | struct gdb_ext_thread_info *info) | |
c906108c | 2506 | { |
d01949b6 | 2507 | struct remote_state *rs = get_remote_state (); |
c906108c | 2508 | int result; |
c906108c | 2509 | |
2e9f7625 DJ |
2510 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2511 | putpkt (rs->buf); | |
6d820c5c | 2512 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2513 | |
2514 | if (rs->buf[0] == '\0') | |
2515 | return 0; | |
2516 | ||
2e9f7625 | 2517 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2518 | threadid, info); |
c906108c SS |
2519 | return result; |
2520 | } | |
2521 | ||
c906108c SS |
2522 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2523 | ||
2524 | static char * | |
fba45db2 KB |
2525 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2526 | threadref *nextthread) | |
c906108c SS |
2527 | { |
2528 | *pkt++ = 'q'; /* info query packet */ | |
2529 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2530 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2531 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2532 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2533 | *pkt = '\0'; | |
2534 | return pkt; | |
2535 | } | |
2536 | ||
2537 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2538 | ||
2539 | static int | |
fba45db2 KB |
2540 | parse_threadlist_response (char *pkt, int result_limit, |
2541 | threadref *original_echo, threadref *resultlist, | |
2542 | int *doneflag) | |
c906108c | 2543 | { |
d01949b6 | 2544 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2545 | char *limit; |
2546 | int count, resultcount, done; | |
2547 | ||
2548 | resultcount = 0; | |
2549 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2550 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2551 | /* done parse past here */ |
c906108c SS |
2552 | pkt = unpack_byte (pkt, &count); /* count field */ |
2553 | pkt = unpack_nibble (pkt, &done); | |
2554 | /* The first threadid is the argument threadid. */ | |
2555 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2556 | while ((count-- > 0) && (pkt < limit)) | |
2557 | { | |
2558 | pkt = unpack_threadid (pkt, resultlist++); | |
2559 | if (resultcount++ >= result_limit) | |
2560 | break; | |
2561 | } | |
2562 | if (doneflag) | |
2563 | *doneflag = done; | |
2564 | return resultcount; | |
2565 | } | |
2566 | ||
6dc54d91 PA |
2567 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2568 | qL packet is not supported, 0 on error and 1 on success. */ | |
2569 | ||
c906108c | 2570 | static int |
fba45db2 KB |
2571 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2572 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2573 | { |
d01949b6 | 2574 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2575 | int result = 1; |
2576 | ||
23860348 | 2577 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2578 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2579 | >= get_remote_packet_size ()) | |
ea9c271d | 2580 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2581 | |
6d820c5c DJ |
2582 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2583 | putpkt (rs->buf); | |
2584 | getpkt (&rs->buf, &rs->buf_size, 0); | |
d8f2712d | 2585 | if (*rs->buf == '\0') |
6dc54d91 PA |
2586 | { |
2587 | /* Packet not supported. */ | |
2588 | return -1; | |
2589 | } | |
2590 | ||
2591 | *result_count = | |
2592 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2593 | &rs->echo_nextthread, threadlist, done); | |
c906108c | 2594 | |
0d031856 | 2595 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 2596 | { |
23860348 MS |
2597 | /* FIXME: This is a good reason to drop the packet. */ |
2598 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2599 | /* Possabilities : |
2600 | retransmit immediatly - race conditions | |
2601 | retransmit after timeout - yes | |
2602 | exit | |
2603 | wait for packet, then exit | |
2604 | */ | |
8a3fe4f8 | 2605 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2606 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2607 | } |
2608 | if (*result_count <= 0) | |
2609 | { | |
2610 | if (*done != 1) | |
2611 | { | |
8a3fe4f8 | 2612 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2613 | result = 0; |
2614 | } | |
2615 | return result; /* break; */ | |
2616 | } | |
2617 | if (*result_count > result_limit) | |
2618 | { | |
2619 | *result_count = 0; | |
8a3fe4f8 | 2620 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2621 | return 0; |
2622 | } | |
2623 | return result; | |
2624 | } | |
2625 | ||
6dc54d91 PA |
2626 | /* Fetch the list of remote threads, with the qL packet, and call |
2627 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2628 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2629 | STEPFUNCTION returns false. If the packet is not supported, | |
2630 | returns -1. */ | |
c906108c | 2631 | |
c906108c | 2632 | static int |
fba45db2 KB |
2633 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2634 | int looplimit) | |
c906108c | 2635 | { |
0d031856 | 2636 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2637 | int done, i, result_count; |
2638 | int startflag = 1; | |
2639 | int result = 1; | |
2640 | int loopcount = 0; | |
c906108c SS |
2641 | |
2642 | done = 0; | |
2643 | while (!done) | |
2644 | { | |
2645 | if (loopcount++ > looplimit) | |
2646 | { | |
2647 | result = 0; | |
8a3fe4f8 | 2648 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2649 | break; |
2650 | } | |
6dc54d91 PA |
2651 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2652 | MAXTHREADLISTRESULTS, | |
2653 | &done, &result_count, | |
2654 | rs->resultthreadlist); | |
2655 | if (result <= 0) | |
2656 | break; | |
23860348 | 2657 | /* Clear for later iterations. */ |
c906108c SS |
2658 | startflag = 0; |
2659 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2660 | if (result_count >= 1) | |
0d031856 TT |
2661 | copy_threadref (&rs->nextthread, |
2662 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
2663 | i = 0; |
2664 | while (result_count--) | |
6dc54d91 PA |
2665 | { |
2666 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2667 | { | |
2668 | result = 0; | |
2669 | break; | |
2670 | } | |
2671 | } | |
c906108c SS |
2672 | } |
2673 | return result; | |
2674 | } | |
2675 | ||
6dc54d91 PA |
2676 | /* A thread found on the remote target. */ |
2677 | ||
2678 | typedef struct thread_item | |
2679 | { | |
2680 | /* The thread's PTID. */ | |
2681 | ptid_t ptid; | |
2682 | ||
2683 | /* The thread's extra info. May be NULL. */ | |
2684 | char *extra; | |
2685 | ||
2686 | /* The core the thread was running on. -1 if not known. */ | |
2687 | int core; | |
2688 | } thread_item_t; | |
2689 | DEF_VEC_O(thread_item_t); | |
2690 | ||
2691 | /* Context passed around to the various methods listing remote | |
2692 | threads. As new threads are found, they're added to the ITEMS | |
2693 | vector. */ | |
2694 | ||
2695 | struct threads_listing_context | |
2696 | { | |
2697 | /* The threads found on the remote target. */ | |
2698 | VEC (thread_item_t) *items; | |
2699 | }; | |
2700 | ||
80134cf5 PA |
2701 | /* Discard the contents of the constructed thread listing context. */ |
2702 | ||
2703 | static void | |
2704 | clear_threads_listing_context (void *p) | |
2705 | { | |
2706 | struct threads_listing_context *context = p; | |
2707 | int i; | |
2708 | struct thread_item *item; | |
2709 | ||
2710 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2711 | xfree (item->extra); | |
2712 | ||
2713 | VEC_free (thread_item_t, context->items); | |
2714 | } | |
2715 | ||
cbb8991c DB |
2716 | /* Remove the thread specified as the related_pid field of WS |
2717 | from the CONTEXT list. */ | |
2718 | ||
2719 | static void | |
2720 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2721 | struct threads_listing_context *context) | |
2722 | { | |
2723 | struct thread_item *item; | |
2724 | int i; | |
2725 | ptid_t child_ptid = ws->value.related_pid; | |
2726 | ||
2727 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2728 | { | |
2729 | if (ptid_equal (item->ptid, child_ptid)) | |
2730 | { | |
2731 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2732 | break; | |
2733 | } | |
2734 | } | |
2735 | } | |
2736 | ||
c906108c | 2737 | static int |
6dc54d91 | 2738 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 2739 | { |
6dc54d91 PA |
2740 | struct threads_listing_context *context = data; |
2741 | struct thread_item item; | |
79d7f229 | 2742 | int pid = ptid_get_pid (inferior_ptid); |
39f77062 | 2743 | |
6dc54d91 PA |
2744 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2745 | item.core = -1; | |
2746 | item.extra = NULL; | |
2747 | ||
2748 | VEC_safe_push (thread_item_t, context->items, &item); | |
2749 | ||
c906108c SS |
2750 | return 1; /* continue iterator */ |
2751 | } | |
2752 | ||
2753 | #define CRAZY_MAX_THREADS 1000 | |
2754 | ||
39f77062 KB |
2755 | static ptid_t |
2756 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2757 | { |
d01949b6 | 2758 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2759 | |
2760 | putpkt ("qC"); | |
6d820c5c | 2761 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2762 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 KB |
2763 | { |
2764 | char *obuf; | |
2765 | ptid_t result; | |
2766 | ||
2767 | result = read_ptid (&rs->buf[2], &obuf); | |
2768 | if (*obuf != '\0' && remote_debug) | |
2769 | fprintf_unfiltered (gdb_stdlog, | |
2770 | "warning: garbage in qC reply\n"); | |
2771 | ||
2772 | return result; | |
2773 | } | |
c906108c SS |
2774 | else |
2775 | return oldpid; | |
2776 | } | |
2777 | ||
6dc54d91 | 2778 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 2779 | |
6dc54d91 PA |
2780 | static int |
2781 | remote_get_threads_with_ql (struct target_ops *ops, | |
2782 | struct threads_listing_context *context) | |
c906108c | 2783 | { |
6dc54d91 PA |
2784 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2785 | CRAZY_MAX_THREADS) >= 0) | |
2786 | return 1; | |
2787 | ||
2788 | return 0; | |
c906108c SS |
2789 | } |
2790 | ||
dc146f7c VP |
2791 | #if defined(HAVE_LIBEXPAT) |
2792 | ||
dc146f7c VP |
2793 | static void |
2794 | start_thread (struct gdb_xml_parser *parser, | |
2795 | const struct gdb_xml_element *element, | |
2796 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2797 | { | |
6dc54d91 | 2798 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2799 | |
2800 | struct thread_item item; | |
2801 | char *id; | |
3d2c1d41 | 2802 | struct gdb_xml_value *attr; |
dc146f7c | 2803 | |
3d2c1d41 | 2804 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2805 | item.ptid = read_ptid (id, NULL); |
2806 | ||
3d2c1d41 PA |
2807 | attr = xml_find_attribute (attributes, "core"); |
2808 | if (attr != NULL) | |
2809 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2810 | else |
2811 | item.core = -1; | |
2812 | ||
2813 | item.extra = 0; | |
2814 | ||
2815 | VEC_safe_push (thread_item_t, data->items, &item); | |
2816 | } | |
2817 | ||
2818 | static void | |
2819 | end_thread (struct gdb_xml_parser *parser, | |
2820 | const struct gdb_xml_element *element, | |
2821 | void *user_data, const char *body_text) | |
2822 | { | |
6dc54d91 | 2823 | struct threads_listing_context *data = user_data; |
dc146f7c VP |
2824 | |
2825 | if (body_text && *body_text) | |
2ae2a0b7 | 2826 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2827 | } |
2828 | ||
2829 | const struct gdb_xml_attribute thread_attributes[] = { | |
2830 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2831 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2832 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2833 | }; | |
2834 | ||
2835 | const struct gdb_xml_element thread_children[] = { | |
2836 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2837 | }; | |
2838 | ||
2839 | const struct gdb_xml_element threads_children[] = { | |
2840 | { "thread", thread_attributes, thread_children, | |
2841 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2842 | start_thread, end_thread }, | |
2843 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2844 | }; | |
2845 | ||
2846 | const struct gdb_xml_element threads_elements[] = { | |
2847 | { "threads", NULL, threads_children, | |
2848 | GDB_XML_EF_NONE, NULL, NULL }, | |
2849 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2850 | }; | |
2851 | ||
2852 | #endif | |
2853 | ||
6dc54d91 | 2854 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 2855 | |
6dc54d91 PA |
2856 | static int |
2857 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2858 | struct threads_listing_context *context) | |
0f71a2f6 | 2859 | { |
dc146f7c | 2860 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 2861 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 2862 | { |
6dc54d91 | 2863 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
dc146f7c | 2864 | struct cleanup *back_to = make_cleanup (xfree, xml); |
efc0eabd | 2865 | |
6dc54d91 | 2866 | if (xml != NULL && *xml != '\0') |
dc146f7c | 2867 | { |
6dc54d91 PA |
2868 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2869 | threads_elements, xml, context); | |
dc146f7c VP |
2870 | } |
2871 | ||
2872 | do_cleanups (back_to); | |
6dc54d91 | 2873 | return 1; |
dc146f7c VP |
2874 | } |
2875 | #endif | |
2876 | ||
6dc54d91 PA |
2877 | return 0; |
2878 | } | |
2879 | ||
2880 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2881 | ||
2882 | static int | |
2883 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2884 | struct threads_listing_context *context) | |
2885 | { | |
2886 | struct remote_state *rs = get_remote_state (); | |
2887 | ||
b80fafe3 | 2888 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 2889 | { |
6dc54d91 PA |
2890 | char *bufp; |
2891 | ||
9d1f7ab2 | 2892 | putpkt ("qfThreadInfo"); |
6d820c5c | 2893 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2894 | bufp = rs->buf; |
9d1f7ab2 | 2895 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2896 | { |
9d1f7ab2 MS |
2897 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2898 | { | |
2899 | do | |
2900 | { | |
6dc54d91 PA |
2901 | struct thread_item item; |
2902 | ||
2903 | item.ptid = read_ptid (bufp, &bufp); | |
2904 | item.core = -1; | |
2905 | item.extra = NULL; | |
2906 | ||
2907 | VEC_safe_push (thread_item_t, context->items, &item); | |
9d1f7ab2 MS |
2908 | } |
2909 | while (*bufp++ == ','); /* comma-separated list */ | |
2910 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2911 | getpkt (&rs->buf, &rs->buf_size, 0); |
6dc54d91 | 2912 | bufp = rs->buf; |
9d1f7ab2 | 2913 | } |
6dc54d91 PA |
2914 | return 1; |
2915 | } | |
2916 | else | |
2917 | { | |
2918 | /* Packet not recognized. */ | |
2919 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
2920 | } |
2921 | } | |
2922 | ||
6dc54d91 PA |
2923 | return 0; |
2924 | } | |
2925 | ||
e8032dde | 2926 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
2927 | targets. */ |
2928 | ||
2929 | static void | |
e8032dde | 2930 | remote_update_thread_list (struct target_ops *ops) |
6dc54d91 PA |
2931 | { |
2932 | struct remote_state *rs = get_remote_state (); | |
2933 | struct threads_listing_context context; | |
2934 | struct cleanup *old_chain; | |
ab970af1 | 2935 | int got_list = 0; |
e8032dde | 2936 | |
6dc54d91 PA |
2937 | context.items = NULL; |
2938 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2939 | ||
2940 | /* We have a few different mechanisms to fetch the thread list. Try | |
2941 | them all, starting with the most preferred one first, falling | |
2942 | back to older methods. */ | |
2943 | if (remote_get_threads_with_qxfer (ops, &context) | |
2944 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2945 | || remote_get_threads_with_ql (ops, &context)) | |
2946 | { | |
2947 | int i; | |
2948 | struct thread_item *item; | |
ab970af1 PA |
2949 | struct thread_info *tp, *tmp; |
2950 | ||
2951 | got_list = 1; | |
2952 | ||
7d1a114c PA |
2953 | if (VEC_empty (thread_item_t, context.items) |
2954 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2955 | { | |
2956 | /* Some targets don't really support threads, but still | |
2957 | reply an (empty) thread list in response to the thread | |
2958 | listing packets, instead of replying "packet not | |
2959 | supported". Exit early so we don't delete the main | |
2960 | thread. */ | |
2961 | do_cleanups (old_chain); | |
2962 | return; | |
2963 | } | |
2964 | ||
ab970af1 PA |
2965 | /* CONTEXT now holds the current thread list on the remote |
2966 | target end. Delete GDB-side threads no longer found on the | |
2967 | target. */ | |
8a06aea7 | 2968 | ALL_THREADS_SAFE (tp, tmp) |
cbb8991c | 2969 | { |
ab970af1 PA |
2970 | for (i = 0; |
2971 | VEC_iterate (thread_item_t, context.items, i, item); | |
2972 | ++i) | |
2973 | { | |
2974 | if (ptid_equal (item->ptid, tp->ptid)) | |
2975 | break; | |
2976 | } | |
2977 | ||
2978 | if (i == VEC_length (thread_item_t, context.items)) | |
2979 | { | |
2980 | /* Not found. */ | |
2981 | delete_thread (tp->ptid); | |
2982 | } | |
cbb8991c DB |
2983 | } |
2984 | ||
2985 | /* Remove any unreported fork child threads from CONTEXT so | |
2986 | that we don't interfere with follow fork, which is where | |
2987 | creation of such threads is handled. */ | |
2988 | remove_new_fork_children (&context); | |
74531fed | 2989 | |
ab970af1 | 2990 | /* And now add threads we don't know about yet to our list. */ |
6dc54d91 PA |
2991 | for (i = 0; |
2992 | VEC_iterate (thread_item_t, context.items, i, item); | |
2993 | ++i) | |
2994 | { | |
2995 | if (!ptid_equal (item->ptid, null_ptid)) | |
2996 | { | |
2997 | struct private_thread_info *info; | |
2998 | /* In non-stop mode, we assume new found threads are | |
2999 | running until proven otherwise with a stop reply. In | |
3000 | all-stop, we can only get here if all threads are | |
3001 | stopped. */ | |
3002 | int running = non_stop ? 1 : 0; | |
3003 | ||
3004 | remote_notice_new_inferior (item->ptid, running); | |
3005 | ||
3006 | info = demand_private_info (item->ptid); | |
3007 | info->core = item->core; | |
3008 | info->extra = item->extra; | |
3009 | item->extra = NULL; | |
3010 | } | |
3011 | } | |
3012 | } | |
3013 | ||
ab970af1 PA |
3014 | if (!got_list) |
3015 | { | |
3016 | /* If no thread listing method is supported, then query whether | |
3017 | each known thread is alive, one by one, with the T packet. | |
3018 | If the target doesn't support threads at all, then this is a | |
3019 | no-op. See remote_thread_alive. */ | |
3020 | prune_threads (); | |
3021 | } | |
3022 | ||
6dc54d91 | 3023 | do_cleanups (old_chain); |
9d1f7ab2 MS |
3024 | } |
3025 | ||
802188a7 | 3026 | /* |
9d1f7ab2 MS |
3027 | * Collect a descriptive string about the given thread. |
3028 | * The target may say anything it wants to about the thread | |
3029 | * (typically info about its blocked / runnable state, name, etc.). | |
3030 | * This string will appear in the info threads display. | |
802188a7 | 3031 | * |
9d1f7ab2 MS |
3032 | * Optional: targets are not required to implement this function. |
3033 | */ | |
3034 | ||
3035 | static char * | |
c15906d8 | 3036 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
9d1f7ab2 | 3037 | { |
d01949b6 | 3038 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3039 | int result; |
3040 | int set; | |
3041 | threadref id; | |
3042 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 3043 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
3044 | int n = 0; /* position in display_buf */ |
3045 | ||
5d93a237 | 3046 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3047 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3048 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3049 | |
60e569b9 | 3050 | if (ptid_equal (tp->ptid, magic_null_ptid) |
ba348170 | 3051 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
60e569b9 PA |
3052 | /* This is the main thread which was added by GDB. The remote |
3053 | server doesn't know about it. */ | |
3054 | return NULL; | |
3055 | ||
4082afcc | 3056 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c VP |
3057 | { |
3058 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 3059 | |
fe978cb0 PA |
3060 | if (info && info->priv) |
3061 | return info->priv->extra; | |
dc146f7c VP |
3062 | else |
3063 | return NULL; | |
3064 | } | |
3065 | ||
b80fafe3 | 3066 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3067 | { |
82f73884 PA |
3068 | char *b = rs->buf; |
3069 | char *endb = rs->buf + get_remote_packet_size (); | |
3070 | ||
3071 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3072 | b += strlen (b); | |
3073 | write_ptid (b, endb, tp->ptid); | |
3074 | ||
2e9f7625 | 3075 | putpkt (rs->buf); |
6d820c5c | 3076 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3077 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3078 | { |
2e9f7625 DJ |
3079 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
3080 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 3081 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
3082 | return display_buf; |
3083 | } | |
0f71a2f6 | 3084 | } |
9d1f7ab2 MS |
3085 | |
3086 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3087 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3088 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3089 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
ba348170 | 3090 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
9d1f7ab2 MS |
3091 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3092 | if (threadinfo.active) | |
0f71a2f6 | 3093 | { |
9d1f7ab2 | 3094 | if (*threadinfo.shortname) |
2bc416ba | 3095 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 3096 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 3097 | if (*threadinfo.display) |
2bc416ba | 3098 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3099 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 3100 | if (*threadinfo.more_display) |
2bc416ba | 3101 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 3102 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
3103 | |
3104 | if (n > 0) | |
c5aa993b | 3105 | { |
23860348 | 3106 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
3107 | if (',' == display_buf[n-1]) |
3108 | display_buf[n-1] = ' '; | |
3109 | return display_buf; | |
c5aa993b | 3110 | } |
0f71a2f6 | 3111 | } |
9d1f7ab2 | 3112 | return NULL; |
0f71a2f6 | 3113 | } |
c906108c | 3114 | \f |
c5aa993b | 3115 | |
0fb4aa4b | 3116 | static int |
61fc905d | 3117 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
0fb4aa4b PA |
3118 | struct static_tracepoint_marker *marker) |
3119 | { | |
3120 | struct remote_state *rs = get_remote_state (); | |
3121 | char *p = rs->buf; | |
3122 | ||
bba74b36 | 3123 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3124 | p += strlen (p); |
3125 | p += hexnumstr (p, addr); | |
3126 | putpkt (rs->buf); | |
3127 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3128 | p = rs->buf; | |
3129 | ||
3130 | if (*p == 'E') | |
3131 | error (_("Remote failure reply: %s"), p); | |
3132 | ||
3133 | if (*p++ == 'm') | |
3134 | { | |
3135 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3136 | return 1; | |
3137 | } | |
3138 | ||
3139 | return 0; | |
3140 | } | |
3141 | ||
0fb4aa4b | 3142 | static VEC(static_tracepoint_marker_p) * |
c686c57f TT |
3143 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3144 | const char *strid) | |
0fb4aa4b PA |
3145 | { |
3146 | struct remote_state *rs = get_remote_state (); | |
3147 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3148 | struct static_tracepoint_marker *marker = NULL; | |
3149 | struct cleanup *old_chain; | |
3150 | char *p; | |
3151 | ||
3152 | /* Ask for a first packet of static tracepoint marker | |
3153 | definition. */ | |
3154 | putpkt ("qTfSTM"); | |
3155 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3156 | p = rs->buf; | |
3157 | if (*p == 'E') | |
3158 | error (_("Remote failure reply: %s"), p); | |
3159 | ||
3160 | old_chain = make_cleanup (free_current_marker, &marker); | |
3161 | ||
3162 | while (*p++ == 'm') | |
3163 | { | |
3164 | if (marker == NULL) | |
3165 | marker = XCNEW (struct static_tracepoint_marker); | |
3166 | ||
3167 | do | |
3168 | { | |
3169 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3170 | ||
3171 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3172 | { | |
3173 | VEC_safe_push (static_tracepoint_marker_p, | |
3174 | markers, marker); | |
3175 | marker = NULL; | |
3176 | } | |
3177 | else | |
3178 | { | |
3179 | release_static_tracepoint_marker (marker); | |
3180 | memset (marker, 0, sizeof (*marker)); | |
3181 | } | |
3182 | } | |
3183 | while (*p++ == ','); /* comma-separated list */ | |
3184 | /* Ask for another packet of static tracepoint definition. */ | |
3185 | putpkt ("qTsSTM"); | |
3186 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3187 | p = rs->buf; | |
3188 | } | |
3189 | ||
3190 | do_cleanups (old_chain); | |
3191 | return markers; | |
3192 | } | |
3193 | ||
3194 | \f | |
10760264 JB |
3195 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3196 | ||
3197 | static ptid_t | |
1e6b91a4 | 3198 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
10760264 | 3199 | { |
ba348170 | 3200 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
10760264 JB |
3201 | } |
3202 | \f | |
3203 | ||
24b06219 | 3204 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
3205 | |
3206 | static void | |
fba45db2 | 3207 | extended_remote_restart (void) |
c906108c | 3208 | { |
d01949b6 | 3209 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3210 | |
3211 | /* Send the restart command; for reasons I don't understand the | |
3212 | remote side really expects a number after the "R". */ | |
ea9c271d | 3213 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3214 | putpkt (rs->buf); |
c906108c | 3215 | |
ad9a8f3f | 3216 | remote_fileio_reset (); |
c906108c SS |
3217 | } |
3218 | \f | |
3219 | /* Clean up connection to a remote debugger. */ | |
3220 | ||
c906108c | 3221 | static void |
de90e03d | 3222 | remote_close (struct target_ops *self) |
c906108c | 3223 | { |
5d93a237 TT |
3224 | struct remote_state *rs = get_remote_state (); |
3225 | ||
3226 | if (rs->remote_desc == NULL) | |
d3fd5342 PA |
3227 | return; /* already closed */ |
3228 | ||
3229 | /* Make sure we leave stdin registered in the event loop, and we | |
3230 | don't leave the async SIGINT signal handler installed. */ | |
e3594fd1 | 3231 | remote_terminal_ours (self); |
ce5ce7ed | 3232 | |
5d93a237 TT |
3233 | serial_close (rs->remote_desc); |
3234 | rs->remote_desc = NULL; | |
ce5ce7ed PA |
3235 | |
3236 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3237 | of all the inferiors and their threads we were controlling. |
3238 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3239 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3240 | inferior_ptid = null_ptid; |
f67fd822 | 3241 | discard_all_inferiors (); |
ce5ce7ed | 3242 | |
f48ff2a7 YQ |
3243 | /* We are closing the remote target, so we should discard |
3244 | everything of this target. */ | |
bcc75809 | 3245 | discard_pending_stop_replies_in_queue (rs); |
74531fed PA |
3246 | |
3247 | if (remote_async_inferior_event_token) | |
3248 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 | 3249 | |
5965e028 | 3250 | remote_notif_state_xfree (rs->notif_state); |
aef525cb YQ |
3251 | |
3252 | trace_reset_local_state (); | |
c906108c SS |
3253 | } |
3254 | ||
23860348 | 3255 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3256 | |
3257 | static void | |
fba45db2 | 3258 | get_offsets (void) |
c906108c | 3259 | { |
d01949b6 | 3260 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3261 | char *buf; |
085dd6e6 | 3262 | char *ptr; |
31d99776 DJ |
3263 | int lose, num_segments = 0, do_sections, do_segments; |
3264 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3265 | struct section_offsets *offs; |
31d99776 DJ |
3266 | struct symfile_segment_data *data; |
3267 | ||
3268 | if (symfile_objfile == NULL) | |
3269 | return; | |
c906108c SS |
3270 | |
3271 | putpkt ("qOffsets"); | |
6d820c5c | 3272 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3273 | buf = rs->buf; |
c906108c SS |
3274 | |
3275 | if (buf[0] == '\000') | |
3276 | return; /* Return silently. Stub doesn't support | |
23860348 | 3277 | this command. */ |
c906108c SS |
3278 | if (buf[0] == 'E') |
3279 | { | |
8a3fe4f8 | 3280 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3281 | return; |
3282 | } | |
3283 | ||
3284 | /* Pick up each field in turn. This used to be done with scanf, but | |
3285 | scanf will make trouble if CORE_ADDR size doesn't match | |
3286 | conversion directives correctly. The following code will work | |
3287 | with any size of CORE_ADDR. */ | |
3288 | text_addr = data_addr = bss_addr = 0; | |
3289 | ptr = buf; | |
3290 | lose = 0; | |
3291 | ||
61012eef | 3292 | if (startswith (ptr, "Text=")) |
c906108c SS |
3293 | { |
3294 | ptr += 5; | |
3295 | /* Don't use strtol, could lose on big values. */ | |
3296 | while (*ptr && *ptr != ';') | |
3297 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3298 | |
61012eef | 3299 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
3300 | { |
3301 | ptr += 6; | |
3302 | while (*ptr && *ptr != ';') | |
3303 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3304 | } | |
3305 | else | |
3306 | lose = 1; | |
3307 | ||
61012eef | 3308 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
3309 | { |
3310 | ptr += 5; | |
3311 | while (*ptr && *ptr != ';') | |
3312 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3313 | |
31d99776 DJ |
3314 | if (bss_addr != data_addr) |
3315 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3316 | } | |
3317 | else | |
3318 | lose = 1; | |
3319 | } | |
61012eef | 3320 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 3321 | { |
31d99776 DJ |
3322 | ptr += 8; |
3323 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3324 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3325 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3326 | num_segments = 1; | |
3327 | ||
61012eef | 3328 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
3329 | { |
3330 | ptr += 9; | |
3331 | while (*ptr && *ptr != ';') | |
3332 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3333 | num_segments++; | |
3334 | } | |
c906108c SS |
3335 | } |
3336 | else | |
3337 | lose = 1; | |
3338 | ||
3339 | if (lose) | |
8a3fe4f8 | 3340 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3341 | else if (*ptr != '\0') |
3342 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3343 | |
802188a7 | 3344 | offs = ((struct section_offsets *) |
a39a16c4 | 3345 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3346 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3347 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3348 | |
31d99776 DJ |
3349 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3350 | do_segments = (data != NULL); | |
3351 | do_sections = num_segments == 0; | |
c906108c | 3352 | |
28c32713 | 3353 | if (num_segments > 0) |
31d99776 | 3354 | { |
31d99776 DJ |
3355 | segments[0] = text_addr; |
3356 | segments[1] = data_addr; | |
3357 | } | |
28c32713 JB |
3358 | /* If we have two segments, we can still try to relocate everything |
3359 | by assuming that the .text and .data offsets apply to the whole | |
3360 | text and data segments. Convert the offsets given in the packet | |
3361 | to base addresses for symfile_map_offsets_to_segments. */ | |
3362 | else if (data && data->num_segments == 2) | |
3363 | { | |
3364 | segments[0] = data->segment_bases[0] + text_addr; | |
3365 | segments[1] = data->segment_bases[1] + data_addr; | |
3366 | num_segments = 2; | |
3367 | } | |
8d385431 DJ |
3368 | /* If the object file has only one segment, assume that it is text |
3369 | rather than data; main programs with no writable data are rare, | |
3370 | but programs with no code are useless. Of course the code might | |
3371 | have ended up in the data segment... to detect that we would need | |
3372 | the permissions here. */ | |
3373 | else if (data && data->num_segments == 1) | |
3374 | { | |
3375 | segments[0] = data->segment_bases[0] + text_addr; | |
3376 | num_segments = 1; | |
3377 | } | |
28c32713 JB |
3378 | /* There's no way to relocate by segment. */ |
3379 | else | |
3380 | do_segments = 0; | |
31d99776 DJ |
3381 | |
3382 | if (do_segments) | |
3383 | { | |
3384 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3385 | offs, num_segments, segments); | |
3386 | ||
3387 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3388 | error (_("Can not handle qOffsets TextSeg " |
3389 | "response with this symbol file")); | |
31d99776 DJ |
3390 | |
3391 | if (ret > 0) | |
3392 | do_sections = 0; | |
3393 | } | |
c906108c | 3394 | |
9ef895d6 DJ |
3395 | if (data) |
3396 | free_symfile_segment_data (data); | |
31d99776 DJ |
3397 | |
3398 | if (do_sections) | |
3399 | { | |
3400 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3401 | ||
3e43a32a MS |
3402 | /* This is a temporary kludge to force data and bss to use the |
3403 | same offsets because that's what nlmconv does now. The real | |
3404 | solution requires changes to the stub and remote.c that I | |
3405 | don't have time to do right now. */ | |
31d99776 DJ |
3406 | |
3407 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3408 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3409 | } | |
c906108c SS |
3410 | |
3411 | objfile_relocate (symfile_objfile, offs); | |
3412 | } | |
3413 | ||
74531fed PA |
3414 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3415 | threads we know are stopped already. This is used during the | |
3416 | initial remote connection in non-stop mode --- threads that are | |
3417 | reported as already being stopped are left stopped. */ | |
3418 | ||
3419 | static int | |
3420 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3421 | { | |
3422 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3423 | if (peek_stop_reply (thread->ptid)) | |
3424 | set_stop_requested (thread->ptid, 1); | |
3425 | ||
3426 | return 0; | |
3427 | } | |
3428 | ||
9a7071a8 JB |
3429 | /* Send interrupt_sequence to remote target. */ |
3430 | static void | |
eeae04df | 3431 | send_interrupt_sequence (void) |
9a7071a8 | 3432 | { |
5d93a237 TT |
3433 | struct remote_state *rs = get_remote_state (); |
3434 | ||
9a7071a8 | 3435 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 3436 | remote_serial_write ("\x03", 1); |
9a7071a8 | 3437 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 3438 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
3439 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3440 | { | |
5d93a237 | 3441 | serial_send_break (rs->remote_desc); |
c33e31fd | 3442 | remote_serial_write ("g", 1); |
9a7071a8 JB |
3443 | } |
3444 | else | |
3445 | internal_error (__FILE__, __LINE__, | |
3446 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3447 | interrupt_sequence_mode); | |
3448 | } | |
3449 | ||
3405876a PA |
3450 | |
3451 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3452 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3453 | ||
3454 | static ptid_t | |
3455 | stop_reply_extract_thread (char *stop_reply) | |
3456 | { | |
3457 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3458 | { | |
3459 | char *p; | |
3460 | ||
3461 | /* Txx r:val ; r:val (...) */ | |
3462 | p = &stop_reply[3]; | |
3463 | ||
3464 | /* Look for "register" named "thread". */ | |
3465 | while (*p != '\0') | |
3466 | { | |
3467 | char *p1; | |
3468 | ||
3469 | p1 = strchr (p, ':'); | |
3470 | if (p1 == NULL) | |
3471 | return null_ptid; | |
3472 | ||
3473 | if (strncmp (p, "thread", p1 - p) == 0) | |
3474 | return read_ptid (++p1, &p); | |
3475 | ||
3476 | p1 = strchr (p, ';'); | |
3477 | if (p1 == NULL) | |
3478 | return null_ptid; | |
3479 | p1++; | |
3480 | ||
3481 | p = p1; | |
3482 | } | |
3483 | } | |
3484 | ||
3485 | return null_ptid; | |
3486 | } | |
3487 | ||
b7ea362b PA |
3488 | /* Determine the remote side's current thread. If we have a stop |
3489 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3490 | "thread" register we can extract the current thread from. If not, | |
3491 | ask the remote which is the current thread with qC. The former | |
3492 | method avoids a roundtrip. */ | |
3493 | ||
3494 | static ptid_t | |
3495 | get_current_thread (char *wait_status) | |
3496 | { | |
6a49a997 | 3497 | ptid_t ptid = null_ptid; |
b7ea362b PA |
3498 | |
3499 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3500 | the target architecture, which we haven't yet fully determined at | |
3501 | this point. */ | |
3502 | if (wait_status != NULL) | |
3503 | ptid = stop_reply_extract_thread (wait_status); | |
3504 | if (ptid_equal (ptid, null_ptid)) | |
3505 | ptid = remote_current_thread (inferior_ptid); | |
3506 | ||
3507 | return ptid; | |
3508 | } | |
3509 | ||
49c62f2e PA |
3510 | /* Query the remote target for which is the current thread/process, |
3511 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3512 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3513 | to return the current thread. |
3514 | ||
3515 | This function is called after handling the '?' or 'vRun' packets, | |
3516 | whose response is a stop reply from which we can also try | |
3517 | extracting the thread. If the target doesn't support the explicit | |
3518 | qC query, we infer the current thread from that stop reply, passed | |
3519 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3520 | |
3521 | static void | |
3405876a | 3522 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3523 | { |
3524 | struct remote_state *rs = get_remote_state (); | |
3525 | int fake_pid_p = 0; | |
6a49a997 | 3526 | ptid_t ptid; |
49c62f2e PA |
3527 | |
3528 | inferior_ptid = null_ptid; | |
3529 | ||
b7ea362b PA |
3530 | /* Now, if we have thread information, update inferior_ptid. */ |
3531 | ptid = get_current_thread (wait_status); | |
3405876a | 3532 | |
49c62f2e PA |
3533 | if (!ptid_equal (ptid, null_ptid)) |
3534 | { | |
3535 | if (!remote_multi_process_p (rs)) | |
3536 | fake_pid_p = 1; | |
3537 | ||
3538 | inferior_ptid = ptid; | |
3539 | } | |
3540 | else | |
3541 | { | |
3542 | /* Without this, some commands which require an active target | |
3543 | (such as kill) won't work. This variable serves (at least) | |
3544 | double duty as both the pid of the target process (if it has | |
3545 | such), and as a flag indicating that a target is active. */ | |
3546 | inferior_ptid = magic_null_ptid; | |
3547 | fake_pid_p = 1; | |
3548 | } | |
3549 | ||
1b6e6f5c | 3550 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
49c62f2e PA |
3551 | |
3552 | /* Add the main thread. */ | |
3553 | add_thread_silent (inferior_ptid); | |
3554 | } | |
3555 | ||
9cbc821d | 3556 | static void |
04bd08de | 3557 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3558 | { |
c8d104ad PA |
3559 | struct remote_state *rs = get_remote_state (); |
3560 | struct packet_config *noack_config; | |
2d717e4f | 3561 | char *wait_status = NULL; |
8621d6a9 | 3562 | |
23860348 | 3563 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3564 | QUIT; |
c906108c | 3565 | |
9a7071a8 JB |
3566 | if (interrupt_on_connect) |
3567 | send_interrupt_sequence (); | |
3568 | ||
57e12211 | 3569 | /* Ack any packet which the remote side has already sent. */ |
5d93a237 | 3570 | serial_write (rs->remote_desc, "+", 1); |
57e12211 | 3571 | |
1e51243a PA |
3572 | /* Signal other parts that we're going through the initial setup, |
3573 | and so things may not be stable yet. */ | |
3574 | rs->starting_up = 1; | |
3575 | ||
c8d104ad PA |
3576 | /* The first packet we send to the target is the optional "supported |
3577 | packets" request. If the target can answer this, it will tell us | |
3578 | which later probes to skip. */ | |
3579 | remote_query_supported (); | |
3580 | ||
d914c394 | 3581 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 3582 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
c378d69d | 3583 | remote_set_permissions (target); |
d914c394 | 3584 | |
c8d104ad PA |
3585 | /* Next, we possibly activate noack mode. |
3586 | ||
3587 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3588 | enable noack mode if the stub reported a wish for it with | |
3589 | qSupported. | |
3590 | ||
3591 | If set to TRUE, then enable noack mode even if the stub didn't | |
3592 | report it in qSupported. If the stub doesn't reply OK, the | |
3593 | session ends with an error. | |
3594 | ||
3595 | If FALSE, then don't activate noack mode, regardless of what the | |
3596 | stub claimed should be the default with qSupported. */ | |
3597 | ||
3598 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 3599 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
3600 | { |
3601 | putpkt ("QStartNoAckMode"); | |
3602 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3603 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3604 | rs->noack_mode = 1; | |
3605 | } | |
3606 | ||
04bd08de | 3607 | if (extended_p) |
5fe04517 PA |
3608 | { |
3609 | /* Tell the remote that we are using the extended protocol. */ | |
3610 | putpkt ("!"); | |
3611 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3612 | } | |
3613 | ||
9b224c5e PA |
3614 | /* Let the target know which signals it is allowed to pass down to |
3615 | the program. */ | |
3616 | update_signals_program_target (); | |
3617 | ||
d962ef82 DJ |
3618 | /* Next, if the target can specify a description, read it. We do |
3619 | this before anything involving memory or registers. */ | |
3620 | target_find_description (); | |
3621 | ||
6c95b8df PA |
3622 | /* Next, now that we know something about the target, update the |
3623 | address spaces in the program spaces. */ | |
3624 | update_address_spaces (); | |
3625 | ||
50c71eaf PA |
3626 | /* On OSs where the list of libraries is global to all |
3627 | processes, we fetch them early. */ | |
f5656ead | 3628 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3629 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3630 | |
74531fed PA |
3631 | if (non_stop) |
3632 | { | |
4082afcc | 3633 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
3634 | error (_("Non-stop mode requested, but remote " |
3635 | "does not support non-stop")); | |
74531fed PA |
3636 | |
3637 | putpkt ("QNonStop:1"); | |
3638 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3639 | ||
3640 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3641 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3642 | |
3643 | /* Find about threads and processes the stub is already | |
3644 | controlling. We default to adding them in the running state. | |
3645 | The '?' query below will then tell us about which threads are | |
3646 | stopped. */ | |
e8032dde | 3647 | remote_update_thread_list (target); |
74531fed | 3648 | } |
4082afcc | 3649 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
3650 | { |
3651 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3652 | Request it explicitly. */ |
74531fed PA |
3653 | putpkt ("QNonStop:0"); |
3654 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3655 | ||
3656 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3657 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3658 | } |
3659 | ||
a0743c90 YQ |
3660 | /* Upload TSVs regardless of whether the target is running or not. The |
3661 | remote stub, such as GDBserver, may have some predefined or builtin | |
3662 | TSVs, even if the target is not running. */ | |
8bd200f1 | 3663 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
a0743c90 YQ |
3664 | { |
3665 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3666 | ||
181e3713 | 3667 | remote_upload_trace_state_variables (target, &uploaded_tsvs); |
a0743c90 YQ |
3668 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
3669 | } | |
3670 | ||
2d717e4f DJ |
3671 | /* Check whether the target is running now. */ |
3672 | putpkt ("?"); | |
3673 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3674 | ||
74531fed | 3675 | if (!non_stop) |
2d717e4f | 3676 | { |
e714e1bf UW |
3677 | ptid_t ptid; |
3678 | int fake_pid_p = 0; | |
3679 | struct inferior *inf; | |
3680 | ||
74531fed | 3681 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3682 | { |
04bd08de | 3683 | if (!extended_p) |
74531fed | 3684 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3685 | |
3686 | /* We're connected, but not running. Drop out before we | |
3687 | call start_remote. */ | |
e278ad5b | 3688 | rs->starting_up = 0; |
c35b1492 | 3689 | return; |
2d717e4f DJ |
3690 | } |
3691 | else | |
74531fed | 3692 | { |
74531fed PA |
3693 | /* Save the reply for later. */ |
3694 | wait_status = alloca (strlen (rs->buf) + 1); | |
3695 | strcpy (wait_status, rs->buf); | |
3696 | } | |
3697 | ||
b7ea362b | 3698 | /* Fetch thread list. */ |
e8032dde | 3699 | target_update_thread_list (); |
b7ea362b | 3700 | |
74531fed PA |
3701 | /* Let the stub know that we want it to return the thread. */ |
3702 | set_continue_thread (minus_one_ptid); | |
3703 | ||
b7ea362b PA |
3704 | if (thread_count () == 0) |
3705 | { | |
3706 | /* Target has no concept of threads at all. GDB treats | |
3707 | non-threaded target as single-threaded; add a main | |
3708 | thread. */ | |
3709 | add_current_inferior_and_thread (wait_status); | |
3710 | } | |
3711 | else | |
3712 | { | |
3713 | /* We have thread information; select the thread the target | |
3714 | says should be current. If we're reconnecting to a | |
3715 | multi-threaded program, this will ideally be the thread | |
3716 | that last reported an event before GDB disconnected. */ | |
3717 | inferior_ptid = get_current_thread (wait_status); | |
3718 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3719 | { | |
3720 | /* Odd... The target was able to list threads, but not | |
3721 | tell us which thread was current (no "thread" | |
3722 | register in T stop reply?). Just pick the first | |
3723 | thread in the thread list then. */ | |
c9f35b34 KB |
3724 | |
3725 | if (remote_debug) | |
3726 | fprintf_unfiltered (gdb_stdlog, | |
3727 | "warning: couldn't determine remote " | |
3728 | "current thread; picking first in list.\n"); | |
3729 | ||
b7ea362b PA |
3730 | inferior_ptid = thread_list->ptid; |
3731 | } | |
3732 | } | |
74531fed | 3733 | |
6e586cc5 YQ |
3734 | /* init_wait_for_inferior should be called before get_offsets in order |
3735 | to manage `inserted' flag in bp loc in a correct state. | |
3736 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3737 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3738 | start_remote, set `inserted' flag to 1. In the initialization of | |
3739 | inferior, breakpoint_init_inferior should be called first, and then | |
3740 | breakpoint_re_set can be called. If this order is broken, state of | |
3741 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3742 | manipulation. */ | |
3743 | init_wait_for_inferior (); | |
3744 | ||
74531fed PA |
3745 | get_offsets (); /* Get text, data & bss offsets. */ |
3746 | ||
d962ef82 DJ |
3747 | /* If we could not find a description using qXfer, and we know |
3748 | how to do it some other way, try again. This is not | |
3749 | supported for non-stop; it could be, but it is tricky if | |
3750 | there are no stopped threads when we connect. */ | |
04bd08de | 3751 | if (remote_read_description_p (target) |
f5656ead | 3752 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3753 | { |
3754 | target_clear_description (); | |
3755 | target_find_description (); | |
3756 | } | |
3757 | ||
74531fed PA |
3758 | /* Use the previously fetched status. */ |
3759 | gdb_assert (wait_status != NULL); | |
3760 | strcpy (rs->buf, wait_status); | |
3761 | rs->cached_wait_status = 1; | |
3762 | ||
3763 | immediate_quit--; | |
04bd08de | 3764 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3765 | } |
3766 | else | |
3767 | { | |
68c97600 PA |
3768 | /* Clear WFI global state. Do this before finding about new |
3769 | threads and inferiors, and setting the current inferior. | |
3770 | Otherwise we would clear the proceed status of the current | |
3771 | inferior when we want its stop_soon state to be preserved | |
3772 | (see notice_new_inferior). */ | |
3773 | init_wait_for_inferior (); | |
3774 | ||
74531fed PA |
3775 | /* In non-stop, we will either get an "OK", meaning that there |
3776 | are no stopped threads at this time; or, a regular stop | |
3777 | reply. In the latter case, there may be more than one thread | |
3778 | stopped --- we pull them all out using the vStopped | |
3779 | mechanism. */ | |
3780 | if (strcmp (rs->buf, "OK") != 0) | |
3781 | { | |
722247f1 | 3782 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3783 | |
722247f1 YQ |
3784 | /* remote_notif_get_pending_replies acks this one, and gets |
3785 | the rest out. */ | |
f48ff2a7 | 3786 | rs->notif_state->pending_event[notif_client_stop.id] |
722247f1 YQ |
3787 | = remote_notif_parse (notif, rs->buf); |
3788 | remote_notif_get_pending_events (notif); | |
c906108c | 3789 | |
74531fed PA |
3790 | /* Make sure that threads that were stopped remain |
3791 | stopped. */ | |
3792 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3793 | } | |
2d717e4f | 3794 | |
74531fed | 3795 | if (target_can_async_p ()) |
6a3753b3 | 3796 | target_async (1); |
c906108c | 3797 | |
74531fed PA |
3798 | if (thread_count () == 0) |
3799 | { | |
04bd08de | 3800 | if (!extended_p) |
74531fed | 3801 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3802 | |
c35b1492 PA |
3803 | /* We're connected, but not running. Drop out before we |
3804 | call start_remote. */ | |
e278ad5b | 3805 | rs->starting_up = 0; |
c35b1492 PA |
3806 | return; |
3807 | } | |
74531fed PA |
3808 | |
3809 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3810 | |
74531fed PA |
3811 | /* Force the stub to choose a thread. */ |
3812 | set_general_thread (null_ptid); | |
c906108c | 3813 | |
74531fed PA |
3814 | /* Query it. */ |
3815 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3816 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3817 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3818 | |
74531fed PA |
3819 | get_offsets (); /* Get text, data & bss offsets. */ |
3820 | ||
3821 | /* In non-stop mode, any cached wait status will be stored in | |
3822 | the stop reply queue. */ | |
3823 | gdb_assert (wait_status == NULL); | |
f0223081 | 3824 | |
2455069d | 3825 | /* Report all signals during attach/startup. */ |
94bedb42 | 3826 | remote_pass_signals (target, 0, NULL); |
74531fed | 3827 | } |
c8d104ad | 3828 | |
c8d104ad PA |
3829 | /* If we connected to a live target, do some additional setup. */ |
3830 | if (target_has_execution) | |
3831 | { | |
f4ccffad | 3832 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 3833 | remote_check_symbols (); |
c8d104ad | 3834 | } |
50c71eaf | 3835 | |
d5551862 SS |
3836 | /* Possibly the target has been engaged in a trace run started |
3837 | previously; find out where things are at. */ | |
8bd200f1 | 3838 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
d5551862 | 3839 | { |
00bf0b85 | 3840 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 3841 | |
00bf0b85 SS |
3842 | if (current_trace_status ()->running) |
3843 | printf_filtered (_("Trace is already running on the target.\n")); | |
3844 | ||
ab6617cc | 3845 | remote_upload_tracepoints (target, &uploaded_tps); |
00bf0b85 SS |
3846 | |
3847 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3848 | } |
3849 | ||
1e51243a PA |
3850 | /* The thread and inferior lists are now synchronized with the |
3851 | target, our symbols have been relocated, and we're merged the | |
3852 | target's tracepoints with ours. We're done with basic start | |
3853 | up. */ | |
3854 | rs->starting_up = 0; | |
3855 | ||
a25a5a45 PA |
3856 | /* Maybe breakpoints are global and need to be inserted now. */ |
3857 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 3858 | insert_breakpoints (); |
c906108c SS |
3859 | } |
3860 | ||
3861 | /* Open a connection to a remote debugger. | |
3862 | NAME is the filename used for communication. */ | |
3863 | ||
3864 | static void | |
014f9477 | 3865 | remote_open (const char *name, int from_tty) |
c906108c | 3866 | { |
75c99385 | 3867 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3868 | } |
3869 | ||
c906108c SS |
3870 | /* Open a connection to a remote debugger using the extended |
3871 | remote gdb protocol. NAME is the filename used for communication. */ | |
3872 | ||
3873 | static void | |
014f9477 | 3874 | extended_remote_open (const char *name, int from_tty) |
c906108c | 3875 | { |
75c99385 | 3876 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3877 | } |
3878 | ||
ca4f7f8b PA |
3879 | /* Reset all packets back to "unknown support". Called when opening a |
3880 | new connection to a remote target. */ | |
c906108c | 3881 | |
d471ea57 | 3882 | static void |
ca4f7f8b | 3883 | reset_all_packet_configs_support (void) |
d471ea57 AC |
3884 | { |
3885 | int i; | |
a744cf53 | 3886 | |
444abaca | 3887 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 3888 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
3889 | } |
3890 | ||
ca4f7f8b PA |
3891 | /* Initialize all packet configs. */ |
3892 | ||
3893 | static void | |
3894 | init_all_packet_configs (void) | |
3895 | { | |
3896 | int i; | |
3897 | ||
3898 | for (i = 0; i < PACKET_MAX; i++) | |
3899 | { | |
3900 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3901 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3902 | } | |
3903 | } | |
3904 | ||
23860348 | 3905 | /* Symbol look-up. */ |
dc8acb97 MS |
3906 | |
3907 | static void | |
36d25514 | 3908 | remote_check_symbols (void) |
dc8acb97 | 3909 | { |
d01949b6 | 3910 | struct remote_state *rs = get_remote_state (); |
dc8acb97 | 3911 | char *msg, *reply, *tmp; |
3b7344d5 | 3912 | struct bound_minimal_symbol sym; |
dc8acb97 MS |
3913 | int end; |
3914 | ||
63154eca PA |
3915 | /* The remote side has no concept of inferiors that aren't running |
3916 | yet, it only knows about running processes. If we're connected | |
3917 | but our current inferior is not running, we should not invite the | |
3918 | remote target to request symbol lookups related to its | |
3919 | (unrelated) current process. */ | |
3920 | if (!target_has_execution) | |
3921 | return; | |
3922 | ||
4082afcc | 3923 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
3924 | return; |
3925 | ||
63154eca PA |
3926 | /* Make sure the remote is pointing at the right process. Note |
3927 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3928 | set_general_process (); |
3929 | ||
6d820c5c DJ |
3930 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3931 | because we need both at the same time. */ | |
ea9c271d | 3932 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3933 | |
23860348 | 3934 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3935 | |
3936 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3937 | getpkt (&rs->buf, &rs->buf_size, 0); |
3938 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3939 | reply = rs->buf; |
dc8acb97 | 3940 | |
61012eef | 3941 | while (startswith (reply, "qSymbol:")) |
dc8acb97 | 3942 | { |
77e371c0 TT |
3943 | struct bound_minimal_symbol sym; |
3944 | ||
dc8acb97 | 3945 | tmp = &reply[8]; |
cfd77fa1 | 3946 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3947 | msg[end] = '\0'; |
3948 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3b7344d5 | 3949 | if (sym.minsym == NULL) |
ea9c271d | 3950 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3951 | else |
2bbe3cc1 | 3952 | { |
f5656ead | 3953 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 3954 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
3955 | |
3956 | /* If this is a function address, return the start of code | |
3957 | instead of any data function descriptor. */ | |
f5656ead | 3958 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3959 | sym_addr, |
3960 | ¤t_target); | |
3961 | ||
3962 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3963 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3964 | } |
3965 | ||
dc8acb97 | 3966 | putpkt (msg); |
6d820c5c | 3967 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3968 | reply = rs->buf; |
dc8acb97 MS |
3969 | } |
3970 | } | |
3971 | ||
9db8d71f | 3972 | static struct serial * |
baa336ce | 3973 | remote_serial_open (const char *name) |
9db8d71f DJ |
3974 | { |
3975 | static int udp_warning = 0; | |
3976 | ||
3977 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3978 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3979 | serial connection is reliable and not the serial connection promising | |
3980 | to be. */ | |
61012eef | 3981 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 3982 | { |
3e43a32a MS |
3983 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3984 | "Some events may be lost, rendering further debugging " | |
3985 | "impossible.")); | |
9db8d71f DJ |
3986 | udp_warning = 1; |
3987 | } | |
3988 | ||
3989 | return serial_open (name); | |
3990 | } | |
3991 | ||
d914c394 SS |
3992 | /* Inform the target of our permission settings. The permission flags |
3993 | work without this, but if the target knows the settings, it can do | |
3994 | a couple things. First, it can add its own check, to catch cases | |
3995 | that somehow manage to get by the permissions checks in target | |
3996 | methods. Second, if the target is wired to disallow particular | |
3997 | settings (for instance, a system in the field that is not set up to | |
3998 | be able to stop at a breakpoint), it can object to any unavailable | |
3999 | permissions. */ | |
4000 | ||
4001 | void | |
c378d69d | 4002 | remote_set_permissions (struct target_ops *self) |
d914c394 SS |
4003 | { |
4004 | struct remote_state *rs = get_remote_state (); | |
4005 | ||
bba74b36 YQ |
4006 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4007 | "WriteReg:%x;WriteMem:%x;" | |
4008 | "InsertBreak:%x;InsertTrace:%x;" | |
4009 | "InsertFastTrace:%x;Stop:%x", | |
4010 | may_write_registers, may_write_memory, | |
4011 | may_insert_breakpoints, may_insert_tracepoints, | |
4012 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
4013 | putpkt (rs->buf); |
4014 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4015 | ||
4016 | /* If the target didn't like the packet, warn the user. Do not try | |
4017 | to undo the user's settings, that would just be maddening. */ | |
4018 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 4019 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
4020 | } |
4021 | ||
be2a5f71 DJ |
4022 | /* This type describes each known response to the qSupported |
4023 | packet. */ | |
4024 | struct protocol_feature | |
4025 | { | |
4026 | /* The name of this protocol feature. */ | |
4027 | const char *name; | |
4028 | ||
4029 | /* The default for this protocol feature. */ | |
4030 | enum packet_support default_support; | |
4031 | ||
4032 | /* The function to call when this feature is reported, or after | |
4033 | qSupported processing if the feature is not supported. | |
4034 | The first argument points to this structure. The second | |
4035 | argument indicates whether the packet requested support be | |
4036 | enabled, disabled, or probed (or the default, if this function | |
4037 | is being called at the end of processing and this feature was | |
4038 | not reported). The third argument may be NULL; if not NULL, it | |
4039 | is a NUL-terminated string taken from the packet following | |
4040 | this feature's name and an equals sign. */ | |
4041 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4042 | const char *); | |
4043 | ||
4044 | /* The corresponding packet for this feature. Only used if | |
4045 | FUNC is remote_supported_packet. */ | |
4046 | int packet; | |
4047 | }; | |
4048 | ||
be2a5f71 DJ |
4049 | static void |
4050 | remote_supported_packet (const struct protocol_feature *feature, | |
4051 | enum packet_support support, | |
4052 | const char *argument) | |
4053 | { | |
4054 | if (argument) | |
4055 | { | |
4056 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4057 | " \"%s\"."), feature->name); | |
4058 | return; | |
4059 | } | |
4060 | ||
4082afcc | 4061 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 4062 | } |
be2a5f71 DJ |
4063 | |
4064 | static void | |
4065 | remote_packet_size (const struct protocol_feature *feature, | |
4066 | enum packet_support support, const char *value) | |
4067 | { | |
4068 | struct remote_state *rs = get_remote_state (); | |
4069 | ||
4070 | int packet_size; | |
4071 | char *value_end; | |
4072 | ||
4073 | if (support != PACKET_ENABLE) | |
4074 | return; | |
4075 | ||
4076 | if (value == NULL || *value == '\0') | |
4077 | { | |
4078 | warning (_("Remote target reported \"%s\" without a size."), | |
4079 | feature->name); | |
4080 | return; | |
4081 | } | |
4082 | ||
4083 | errno = 0; | |
4084 | packet_size = strtol (value, &value_end, 16); | |
4085 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4086 | { | |
4087 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4088 | feature->name, value); | |
4089 | return; | |
4090 | } | |
4091 | ||
4092 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
4093 | { | |
4094 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
4095 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
4096 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
4097 | } | |
4098 | ||
4099 | /* Record the new maximum packet size. */ | |
4100 | rs->explicit_packet_size = packet_size; | |
4101 | } | |
4102 | ||
dc473cfb | 4103 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 4104 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 4105 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 4106 | PACKET_qXfer_auxv }, |
c78fa86a GB |
4107 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4108 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
4109 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4110 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
4111 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
4112 | PACKET_qXfer_libraries }, | |
2268b414 JK |
4113 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4114 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 4115 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 4116 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 4117 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 4118 | PACKET_qXfer_memory_map }, |
4de6483e UW |
4119 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
4120 | PACKET_qXfer_spu_read }, | |
4121 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4122 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
4123 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
4124 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
4125 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4126 | PACKET_qXfer_threads }, | |
b3b9301e PA |
4127 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4128 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
4129 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4130 | PACKET_QPassSignals }, | |
9b224c5e PA |
4131 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4132 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
4133 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4134 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
4135 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4136 | PACKET_multiprocess_feature }, | |
4137 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
4138 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4139 | PACKET_qXfer_siginfo_read }, | |
4140 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4141 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 4142 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 4143 | PACKET_ConditionalTracepoints }, |
4082afcc | 4144 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 4145 | PACKET_ConditionalBreakpoints }, |
4082afcc | 4146 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 4147 | PACKET_BreakpointCommands }, |
4082afcc | 4148 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 4149 | PACKET_FastTracepoints }, |
4082afcc | 4150 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 4151 | PACKET_StaticTracepoints }, |
4082afcc | 4152 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 4153 | PACKET_InstallInTrace}, |
4082afcc PA |
4154 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4155 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
4156 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4157 | PACKET_bc }, | |
4158 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4159 | PACKET_bs }, | |
409873ef SS |
4160 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4161 | PACKET_TracepointSource }, | |
d914c394 SS |
4162 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
4163 | PACKET_QAllow }, | |
4082afcc PA |
4164 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4165 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
4166 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4167 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
4168 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4169 | PACKET_qXfer_uib }, | |
03583c20 UW |
4170 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4171 | PACKET_QDisableRandomization }, | |
d1feda86 | 4172 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
4173 | { "QTBuffer:size", PACKET_DISABLE, |
4174 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 4175 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
4176 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4177 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 4178 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 4179 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
4180 | PACKET_qXfer_btrace }, |
4181 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
4182 | PACKET_qXfer_btrace_conf }, |
4183 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
4184 | PACKET_Qbtrace_conf_bts_size }, |
4185 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 4186 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
4187 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
4188 | PACKET_fork_event_feature }, | |
4189 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4190 | PACKET_vfork_event_feature }, | |
b20a6524 MM |
4191 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
4192 | PACKET_Qbtrace_conf_pt_size } | |
be2a5f71 DJ |
4193 | }; |
4194 | ||
c8d5aac9 L |
4195 | static char *remote_support_xml; |
4196 | ||
4197 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4198 | ||
4199 | void | |
6e39997a | 4200 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4201 | { |
4202 | #if defined(HAVE_LIBEXPAT) | |
4203 | if (remote_support_xml == NULL) | |
c4f7c687 | 4204 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4205 | else |
4206 | { | |
4207 | char *copy = xstrdup (remote_support_xml + 13); | |
4208 | char *p = strtok (copy, ","); | |
4209 | ||
4210 | do | |
4211 | { | |
4212 | if (strcmp (p, xml) == 0) | |
4213 | { | |
4214 | /* already there */ | |
4215 | xfree (copy); | |
4216 | return; | |
4217 | } | |
4218 | } | |
4219 | while ((p = strtok (NULL, ",")) != NULL); | |
4220 | xfree (copy); | |
4221 | ||
94b0dee1 PA |
4222 | remote_support_xml = reconcat (remote_support_xml, |
4223 | remote_support_xml, ",", xml, | |
4224 | (char *) NULL); | |
c8d5aac9 L |
4225 | } |
4226 | #endif | |
4227 | } | |
4228 | ||
4229 | static char * | |
4230 | remote_query_supported_append (char *msg, const char *append) | |
4231 | { | |
4232 | if (msg) | |
94b0dee1 | 4233 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4234 | else |
4235 | return xstrdup (append); | |
4236 | } | |
4237 | ||
be2a5f71 DJ |
4238 | static void |
4239 | remote_query_supported (void) | |
4240 | { | |
4241 | struct remote_state *rs = get_remote_state (); | |
4242 | char *next; | |
4243 | int i; | |
4244 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4245 | ||
4246 | /* The packet support flags are handled differently for this packet | |
4247 | than for most others. We treat an error, a disabled packet, and | |
4248 | an empty response identically: any features which must be reported | |
4249 | to be used will be automatically disabled. An empty buffer | |
4250 | accomplishes this, since that is also the representation for a list | |
4251 | containing no features. */ | |
4252 | ||
4253 | rs->buf[0] = 0; | |
4082afcc | 4254 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 4255 | { |
c8d5aac9 | 4256 | char *q = NULL; |
94b0dee1 | 4257 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4258 | |
901f9912 | 4259 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 | 4260 | |
f7e6eed5 PA |
4261 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4262 | q = remote_query_supported_append (q, "swbreak+"); | |
4263 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4264 | q = remote_query_supported_append (q, "hwbreak+"); | |
4265 | ||
c8d5aac9 L |
4266 | if (remote_support_xml) |
4267 | q = remote_query_supported_append (q, remote_support_xml); | |
4268 | ||
dde08ee1 PA |
4269 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4270 | ||
89245bc0 DB |
4271 | if (rs->extended) |
4272 | { | |
4273 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4274 | != AUTO_BOOLEAN_FALSE) | |
4275 | q = remote_query_supported_append (q, "fork-events+"); | |
4276 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4277 | != AUTO_BOOLEAN_FALSE) | |
4278 | q = remote_query_supported_append (q, "vfork-events+"); | |
4279 | } | |
4280 | ||
dde08ee1 PA |
4281 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4282 | putpkt (q); | |
82f73884 | 4283 | |
94b0dee1 PA |
4284 | do_cleanups (old_chain); |
4285 | ||
be2a5f71 DJ |
4286 | getpkt (&rs->buf, &rs->buf_size, 0); |
4287 | ||
4288 | /* If an error occured, warn, but do not return - just reset the | |
4289 | buffer to empty and go on to disable features. */ | |
4290 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4291 | == PACKET_ERROR) | |
4292 | { | |
4293 | warning (_("Remote failure reply: %s"), rs->buf); | |
4294 | rs->buf[0] = 0; | |
4295 | } | |
4296 | } | |
4297 | ||
4298 | memset (seen, 0, sizeof (seen)); | |
4299 | ||
4300 | next = rs->buf; | |
4301 | while (*next) | |
4302 | { | |
4303 | enum packet_support is_supported; | |
4304 | char *p, *end, *name_end, *value; | |
4305 | ||
4306 | /* First separate out this item from the rest of the packet. If | |
4307 | there's another item after this, we overwrite the separator | |
4308 | (terminated strings are much easier to work with). */ | |
4309 | p = next; | |
4310 | end = strchr (p, ';'); | |
4311 | if (end == NULL) | |
4312 | { | |
4313 | end = p + strlen (p); | |
4314 | next = end; | |
4315 | } | |
4316 | else | |
4317 | { | |
89be2091 DJ |
4318 | *end = '\0'; |
4319 | next = end + 1; | |
4320 | ||
be2a5f71 DJ |
4321 | if (end == p) |
4322 | { | |
4323 | warning (_("empty item in \"qSupported\" response")); | |
4324 | continue; | |
4325 | } | |
be2a5f71 DJ |
4326 | } |
4327 | ||
4328 | name_end = strchr (p, '='); | |
4329 | if (name_end) | |
4330 | { | |
4331 | /* This is a name=value entry. */ | |
4332 | is_supported = PACKET_ENABLE; | |
4333 | value = name_end + 1; | |
4334 | *name_end = '\0'; | |
4335 | } | |
4336 | else | |
4337 | { | |
4338 | value = NULL; | |
4339 | switch (end[-1]) | |
4340 | { | |
4341 | case '+': | |
4342 | is_supported = PACKET_ENABLE; | |
4343 | break; | |
4344 | ||
4345 | case '-': | |
4346 | is_supported = PACKET_DISABLE; | |
4347 | break; | |
4348 | ||
4349 | case '?': | |
4350 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4351 | break; | |
4352 | ||
4353 | default: | |
3e43a32a MS |
4354 | warning (_("unrecognized item \"%s\" " |
4355 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4356 | continue; |
4357 | } | |
4358 | end[-1] = '\0'; | |
4359 | } | |
4360 | ||
4361 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4362 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4363 | { | |
4364 | const struct protocol_feature *feature; | |
4365 | ||
4366 | seen[i] = 1; | |
4367 | feature = &remote_protocol_features[i]; | |
4368 | feature->func (feature, is_supported, value); | |
4369 | break; | |
4370 | } | |
4371 | } | |
4372 | ||
4373 | /* If we increased the packet size, make sure to increase the global | |
4374 | buffer size also. We delay this until after parsing the entire | |
4375 | qSupported packet, because this is the same buffer we were | |
4376 | parsing. */ | |
4377 | if (rs->buf_size < rs->explicit_packet_size) | |
4378 | { | |
4379 | rs->buf_size = rs->explicit_packet_size; | |
4380 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4381 | } | |
4382 | ||
4383 | /* Handle the defaults for unmentioned features. */ | |
4384 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4385 | if (!seen[i]) | |
4386 | { | |
4387 | const struct protocol_feature *feature; | |
4388 | ||
4389 | feature = &remote_protocol_features[i]; | |
4390 | feature->func (feature, feature->default_support, NULL); | |
4391 | } | |
4392 | } | |
4393 | ||
78a095c3 JK |
4394 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4395 | on it so remove them first. */ | |
4396 | ||
4397 | static void | |
4398 | remote_unpush_target (void) | |
4399 | { | |
4400 | pop_all_targets_above (process_stratum - 1); | |
4401 | } | |
be2a5f71 | 4402 | |
c906108c | 4403 | static void |
014f9477 | 4404 | remote_open_1 (const char *name, int from_tty, |
3e43a32a | 4405 | struct target_ops *target, int extended_p) |
c906108c | 4406 | { |
d01949b6 | 4407 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4408 | |
c906108c | 4409 | if (name == 0) |
8a3fe4f8 | 4410 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4411 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4412 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4413 | |
23860348 | 4414 | /* See FIXME above. */ |
c6ebd6cf | 4415 | if (!target_async_permitted) |
92d1e331 | 4416 | wait_forever_enabled_p = 1; |
6426a772 | 4417 | |
2d717e4f | 4418 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
4419 | Ask this question first, before target_preopen has a chance to kill |
4420 | anything. */ | |
5d93a237 | 4421 | if (rs->remote_desc != NULL && !have_inferiors ()) |
2d717e4f | 4422 | { |
78a095c3 JK |
4423 | if (from_tty |
4424 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
4425 | error (_("Still connected.")); |
4426 | } | |
4427 | ||
78a095c3 | 4428 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
4429 | target_preopen (from_tty); |
4430 | ||
89be2091 | 4431 | /* Make sure we send the passed signals list the next time we resume. */ |
747dc59d TT |
4432 | xfree (rs->last_pass_packet); |
4433 | rs->last_pass_packet = NULL; | |
89be2091 | 4434 | |
9b224c5e PA |
4435 | /* Make sure we send the program signals list the next time we |
4436 | resume. */ | |
5e4a05c4 TT |
4437 | xfree (rs->last_program_signals_packet); |
4438 | rs->last_program_signals_packet = NULL; | |
9b224c5e | 4439 | |
ad9a8f3f | 4440 | remote_fileio_reset (); |
1dd41f16 NS |
4441 | reopen_exec_file (); |
4442 | reread_symbols (); | |
4443 | ||
5d93a237 TT |
4444 | rs->remote_desc = remote_serial_open (name); |
4445 | if (!rs->remote_desc) | |
c906108c SS |
4446 | perror_with_name (name); |
4447 | ||
4448 | if (baud_rate != -1) | |
4449 | { | |
5d93a237 | 4450 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 4451 | { |
9b74d5d3 KB |
4452 | /* The requested speed could not be set. Error out to |
4453 | top level after closing remote_desc. Take care to | |
4454 | set remote_desc to NULL to avoid closing remote_desc | |
4455 | more than once. */ | |
5d93a237 TT |
4456 | serial_close (rs->remote_desc); |
4457 | rs->remote_desc = NULL; | |
c906108c SS |
4458 | perror_with_name (name); |
4459 | } | |
4460 | } | |
4461 | ||
236af5e3 | 4462 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 4463 | serial_raw (rs->remote_desc); |
c906108c SS |
4464 | |
4465 | /* If there is something sitting in the buffer we might take it as a | |
4466 | response to a command, which would be bad. */ | |
5d93a237 | 4467 | serial_flush_input (rs->remote_desc); |
c906108c SS |
4468 | |
4469 | if (from_tty) | |
4470 | { | |
4471 | puts_filtered ("Remote debugging using "); | |
4472 | puts_filtered (name); | |
4473 | puts_filtered ("\n"); | |
4474 | } | |
23860348 | 4475 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4476 | |
74531fed PA |
4477 | /* Register extra event sources in the event loop. */ |
4478 | remote_async_inferior_event_token | |
4479 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4480 | NULL); | |
5965e028 | 4481 | rs->notif_state = remote_notif_state_allocate (); |
74531fed | 4482 | |
be2a5f71 DJ |
4483 | /* Reset the target state; these things will be queried either by |
4484 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 4485 | reset_all_packet_configs_support (); |
74531fed | 4486 | rs->cached_wait_status = 0; |
be2a5f71 | 4487 | rs->explicit_packet_size = 0; |
a6f3e723 | 4488 | rs->noack_mode = 0; |
82f73884 | 4489 | rs->extended = extended_p; |
e24a49d8 | 4490 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4491 | rs->ctrlc_pending_p = 0; |
802188a7 | 4492 | |
47f8a51d TT |
4493 | rs->general_thread = not_sent_ptid; |
4494 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 4495 | rs->remote_traceframe_number = -1; |
c906108c | 4496 | |
9d1f7ab2 | 4497 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
4498 | rs->use_threadinfo_query = 1; |
4499 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 4500 | |
c6ebd6cf | 4501 | if (target_async_permitted) |
92d1e331 | 4502 | { |
23860348 | 4503 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4504 | remote_async_terminal_ours_p = 1; |
4505 | ||
4506 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4507 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4508 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4509 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4510 | around this. Eventually a mechanism that allows |
92d1e331 | 4511 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4512 | implemented. */ |
92d1e331 DJ |
4513 | wait_forever_enabled_p = 0; |
4514 | } | |
4515 | ||
23860348 | 4516 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4517 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4518 | |
74531fed PA |
4519 | /* Start afresh. */ |
4520 | init_thread_list (); | |
4521 | ||
36918e70 | 4522 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4523 | target (we'd otherwise be in an inconsistent state) and then |
4524 | propogate the error on up the exception chain. This ensures that | |
4525 | the caller doesn't stumble along blindly assuming that the | |
4526 | function succeeded. The CLI doesn't have this problem but other | |
4527 | UI's, such as MI do. | |
36918e70 AC |
4528 | |
4529 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4530 | this function should return an error indication letting the | |
ce2826aa | 4531 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4532 | ``target remote'' is directly wired to this function making that |
4533 | impossible. On a positive note, the CLI side of this problem has | |
4534 | been fixed - the function set_cmd_context() makes it possible for | |
4535 | all the ``target ....'' commands to share a common callback | |
4536 | function. See cli-dump.c. */ | |
109c3e39 | 4537 | { |
2d717e4f | 4538 | |
492d29ea | 4539 | TRY |
04bd08de TT |
4540 | { |
4541 | remote_start_remote (from_tty, target, extended_p); | |
4542 | } | |
492d29ea | 4543 | CATCH (ex, RETURN_MASK_ALL) |
109c3e39 | 4544 | { |
c8d104ad PA |
4545 | /* Pop the partially set up target - unless something else did |
4546 | already before throwing the exception. */ | |
5d93a237 | 4547 | if (rs->remote_desc != NULL) |
78a095c3 | 4548 | remote_unpush_target (); |
c6ebd6cf | 4549 | if (target_async_permitted) |
109c3e39 AC |
4550 | wait_forever_enabled_p = 1; |
4551 | throw_exception (ex); | |
4552 | } | |
492d29ea | 4553 | END_CATCH |
109c3e39 | 4554 | } |
c906108c | 4555 | |
f4abbc16 MM |
4556 | remote_btrace_reset (); |
4557 | ||
c6ebd6cf | 4558 | if (target_async_permitted) |
92d1e331 | 4559 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4560 | } |
4561 | ||
de0d863e DB |
4562 | /* Detach the specified process. */ |
4563 | ||
4564 | static void | |
4565 | remote_detach_pid (int pid) | |
4566 | { | |
4567 | struct remote_state *rs = get_remote_state (); | |
4568 | ||
4569 | if (remote_multi_process_p (rs)) | |
4570 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4571 | else | |
4572 | strcpy (rs->buf, "D"); | |
4573 | ||
4574 | putpkt (rs->buf); | |
4575 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4576 | ||
4577 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4578 | ; | |
4579 | else if (rs->buf[0] == '\0') | |
4580 | error (_("Remote doesn't know how to detach")); | |
4581 | else | |
4582 | error (_("Can't detach process.")); | |
4583 | } | |
4584 | ||
4585 | /* This detaches a program to which we previously attached, using | |
4586 | inferior_ptid to identify the process. After this is done, GDB | |
4587 | can be used to debug some other program. We better not have left | |
4588 | any breakpoints in the target program or it'll die when it hits | |
4589 | one. */ | |
c906108c SS |
4590 | |
4591 | static void | |
de0d863e | 4592 | remote_detach_1 (const char *args, int from_tty) |
c906108c | 4593 | { |
82f73884 | 4594 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4595 | struct remote_state *rs = get_remote_state (); |
de0d863e DB |
4596 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4597 | int is_fork_parent; | |
c906108c SS |
4598 | |
4599 | if (args) | |
8a3fe4f8 | 4600 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4601 | |
2d717e4f DJ |
4602 | if (!target_has_execution) |
4603 | error (_("No process to detach from.")); | |
4604 | ||
7cee1e54 PA |
4605 | if (from_tty) |
4606 | { | |
4607 | char *exec_file = get_exec_file (0); | |
4608 | if (exec_file == NULL) | |
4609 | exec_file = ""; | |
4610 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4611 | target_pid_to_str (pid_to_ptid (pid))); | |
4612 | gdb_flush (gdb_stdout); | |
4613 | } | |
4614 | ||
c906108c | 4615 | /* Tell the remote target to detach. */ |
de0d863e | 4616 | remote_detach_pid (pid); |
82f73884 | 4617 | |
de0d863e | 4618 | if (from_tty && !rs->extended) |
7cee1e54 | 4619 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 4620 | |
de0d863e DB |
4621 | /* Check to see if we are detaching a fork parent. Note that if we |
4622 | are detaching a fork child, tp == NULL. */ | |
4623 | is_fork_parent = (tp != NULL | |
4624 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4625 | ||
4626 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4627 | breakpoints that should be available for the followed inferior. */ | |
4628 | if (!is_fork_parent) | |
4629 | target_mourn_inferior (); | |
4630 | else | |
4631 | { | |
4632 | inferior_ptid = null_ptid; | |
4633 | detach_inferior (pid); | |
4634 | } | |
2d717e4f DJ |
4635 | } |
4636 | ||
4637 | static void | |
52554a0e | 4638 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4639 | { |
de0d863e | 4640 | remote_detach_1 (args, from_tty); |
2d717e4f DJ |
4641 | } |
4642 | ||
4643 | static void | |
52554a0e | 4644 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
2d717e4f | 4645 | { |
de0d863e DB |
4646 | remote_detach_1 (args, from_tty); |
4647 | } | |
4648 | ||
4649 | /* Target follow-fork function for remote targets. On entry, and | |
4650 | at return, the current inferior is the fork parent. | |
4651 | ||
4652 | Note that although this is currently only used for extended-remote, | |
4653 | it is named remote_follow_fork in anticipation of using it for the | |
4654 | remote target as well. */ | |
4655 | ||
4656 | static int | |
4657 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4658 | int detach_fork) | |
4659 | { | |
4660 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 4661 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 4662 | |
c269dbdb DB |
4663 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
4664 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
4665 | { |
4666 | /* When following the parent and detaching the child, we detach | |
4667 | the child here. For the case of following the child and | |
4668 | detaching the parent, the detach is done in the target- | |
4669 | independent follow fork code in infrun.c. We can't use | |
4670 | target_detach when detaching an unfollowed child because | |
4671 | the client side doesn't know anything about the child. */ | |
4672 | if (detach_fork && !follow_child) | |
4673 | { | |
4674 | /* Detach the fork child. */ | |
4675 | ptid_t child_ptid; | |
4676 | pid_t child_pid; | |
4677 | ||
4678 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4679 | child_pid = ptid_get_pid (child_ptid); | |
4680 | ||
4681 | remote_detach_pid (child_pid); | |
4682 | detach_inferior (child_pid); | |
4683 | } | |
4684 | } | |
4685 | return 0; | |
c906108c SS |
4686 | } |
4687 | ||
6ad8ae5c DJ |
4688 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4689 | ||
43ff13b4 | 4690 | static void |
fee354ee | 4691 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
43ff13b4 | 4692 | { |
43ff13b4 | 4693 | if (args) |
2d717e4f | 4694 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4695 | |
2d717e4f | 4696 | /* Make sure we unpush even the extended remote targets; mourn |
20f796c9 | 4697 | won't do it. So call remote_mourn directly instead of |
2d717e4f | 4698 | target_mourn_inferior. */ |
20f796c9 | 4699 | remote_mourn (target); |
2d717e4f | 4700 | |
43ff13b4 JM |
4701 | if (from_tty) |
4702 | puts_filtered ("Ending remote debugging.\n"); | |
4703 | } | |
4704 | ||
2d717e4f DJ |
4705 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4706 | be chatty about it. */ | |
4707 | ||
4708 | static void | |
20f796c9 GB |
4709 | extended_remote_attach (struct target_ops *target, const char *args, |
4710 | int from_tty) | |
2d717e4f DJ |
4711 | { |
4712 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4713 | int pid; |
96ef3384 | 4714 | char *wait_status = NULL; |
2d717e4f | 4715 | |
74164c56 | 4716 | pid = parse_pid_to_attach (args); |
2d717e4f | 4717 | |
74164c56 JK |
4718 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4719 | way as in other targets. */ | |
2d717e4f | 4720 | |
4082afcc | 4721 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
4722 | error (_("This target does not support attaching to a process")); |
4723 | ||
7cee1e54 PA |
4724 | if (from_tty) |
4725 | { | |
4726 | char *exec_file = get_exec_file (0); | |
4727 | ||
4728 | if (exec_file) | |
4729 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4730 | target_pid_to_str (pid_to_ptid (pid))); | |
4731 | else | |
4732 | printf_unfiltered (_("Attaching to %s\n"), | |
4733 | target_pid_to_str (pid_to_ptid (pid))); | |
4734 | ||
4735 | gdb_flush (gdb_stdout); | |
4736 | } | |
4737 | ||
bba74b36 | 4738 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4739 | putpkt (rs->buf); |
4740 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4741 | ||
4082afcc PA |
4742 | switch (packet_ok (rs->buf, |
4743 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 4744 | { |
4082afcc | 4745 | case PACKET_OK: |
74531fed PA |
4746 | if (!non_stop) |
4747 | { | |
4748 | /* Save the reply for later. */ | |
4749 | wait_status = alloca (strlen (rs->buf) + 1); | |
4750 | strcpy (wait_status, rs->buf); | |
4751 | } | |
4752 | else if (strcmp (rs->buf, "OK") != 0) | |
4753 | error (_("Attaching to %s failed with: %s"), | |
4754 | target_pid_to_str (pid_to_ptid (pid)), | |
4755 | rs->buf); | |
4082afcc PA |
4756 | break; |
4757 | case PACKET_UNKNOWN: | |
4758 | error (_("This target does not support attaching to a process")); | |
4759 | default: | |
4760 | error (_("Attaching to %s failed"), | |
4761 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4762 | } |
2d717e4f | 4763 | |
1b6e6f5c | 4764 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
bad34192 | 4765 | |
2d717e4f | 4766 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4767 | |
bad34192 PA |
4768 | if (non_stop) |
4769 | { | |
4770 | struct thread_info *thread; | |
79d7f229 | 4771 | |
bad34192 | 4772 | /* Get list of threads. */ |
e8032dde | 4773 | remote_update_thread_list (target); |
82f73884 | 4774 | |
bad34192 PA |
4775 | thread = first_thread_of_process (pid); |
4776 | if (thread) | |
4777 | inferior_ptid = thread->ptid; | |
4778 | else | |
4779 | inferior_ptid = pid_to_ptid (pid); | |
4780 | ||
4781 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 4782 | record_currthread (rs, minus_one_ptid); |
bad34192 | 4783 | } |
74531fed | 4784 | else |
bad34192 PA |
4785 | { |
4786 | /* Now, if we have thread information, update inferior_ptid. */ | |
4787 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4788 | ||
4789 | /* Add the main thread to the thread list. */ | |
4790 | add_thread_silent (inferior_ptid); | |
4791 | } | |
c0a2216e | 4792 | |
96ef3384 UW |
4793 | /* Next, if the target can specify a description, read it. We do |
4794 | this before anything involving memory or registers. */ | |
4795 | target_find_description (); | |
4796 | ||
74531fed PA |
4797 | if (!non_stop) |
4798 | { | |
4799 | /* Use the previously fetched status. */ | |
4800 | gdb_assert (wait_status != NULL); | |
4801 | ||
4802 | if (target_can_async_p ()) | |
4803 | { | |
722247f1 YQ |
4804 | struct notif_event *reply |
4805 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4806 | |
722247f1 | 4807 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 4808 | |
6a3753b3 | 4809 | target_async (1); |
74531fed PA |
4810 | } |
4811 | else | |
4812 | { | |
4813 | gdb_assert (wait_status != NULL); | |
4814 | strcpy (rs->buf, wait_status); | |
4815 | rs->cached_wait_status = 1; | |
4816 | } | |
4817 | } | |
4818 | else | |
4819 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4820 | } |
4821 | ||
b9c1d481 AS |
4822 | /* Implementation of the to_post_attach method. */ |
4823 | ||
4824 | static void | |
4825 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
4826 | { | |
4827 | /* In certain cases GDB might not have had the chance to start | |
4828 | symbol lookup up until now. This could happen if the debugged | |
4829 | binary is not using shared libraries, the vsyscall page is not | |
4830 | present (on Linux) and the binary itself hadn't changed since the | |
4831 | debugging process was started. */ | |
4832 | if (symfile_objfile != NULL) | |
4833 | remote_check_symbols(); | |
4834 | } | |
4835 | ||
c906108c | 4836 | \f |
506fb367 DJ |
4837 | /* Check for the availability of vCont. This function should also check |
4838 | the response. */ | |
c906108c SS |
4839 | |
4840 | static void | |
6d820c5c | 4841 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4842 | { |
2e9f7625 | 4843 | char *buf; |
6d820c5c | 4844 | |
2e9f7625 DJ |
4845 | strcpy (rs->buf, "vCont?"); |
4846 | putpkt (rs->buf); | |
6d820c5c | 4847 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4848 | buf = rs->buf; |
c906108c | 4849 | |
506fb367 | 4850 | /* Make sure that the features we assume are supported. */ |
61012eef | 4851 | if (startswith (buf, "vCont")) |
506fb367 DJ |
4852 | { |
4853 | char *p = &buf[5]; | |
4854 | int support_s, support_S, support_c, support_C; | |
4855 | ||
4856 | support_s = 0; | |
4857 | support_S = 0; | |
4858 | support_c = 0; | |
4859 | support_C = 0; | |
d458bd84 | 4860 | rs->supports_vCont.t = 0; |
c1e36e3e | 4861 | rs->supports_vCont.r = 0; |
506fb367 DJ |
4862 | while (p && *p == ';') |
4863 | { | |
4864 | p++; | |
4865 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4866 | support_s = 1; | |
4867 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4868 | support_S = 1; | |
4869 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4870 | support_c = 1; | |
4871 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4872 | support_C = 1; | |
74531fed | 4873 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 4874 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
4875 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4876 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
4877 | |
4878 | p = strchr (p, ';'); | |
4879 | } | |
c906108c | 4880 | |
506fb367 DJ |
4881 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4882 | BUF will make packet_ok disable the packet. */ | |
4883 | if (!support_s || !support_S || !support_c || !support_C) | |
4884 | buf[0] = 0; | |
4885 | } | |
c906108c | 4886 | |
444abaca | 4887 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4888 | } |
c906108c | 4889 | |
0d8f58ca PA |
4890 | /* Helper function for building "vCont" resumptions. Write a |
4891 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4892 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4893 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4894 | resumed thread should be single-stepped and/or signalled. If PTID | |
4895 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4896 | represents a process, then all threads of the process are resumed; | |
4897 | the thread to be stepped and/or signalled is given in the global | |
4898 | INFERIOR_PTID. */ | |
4899 | ||
4900 | static char * | |
4901 | append_resumption (char *p, char *endp, | |
2ea28649 | 4902 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4903 | { |
4904 | struct remote_state *rs = get_remote_state (); | |
4905 | ||
a493e3e2 | 4906 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 4907 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
4908 | else if (step |
4909 | /* GDB is willing to range step. */ | |
4910 | && use_range_stepping | |
4911 | /* Target supports range stepping. */ | |
4912 | && rs->supports_vCont.r | |
4913 | /* We don't currently support range stepping multiple | |
4914 | threads with a wildcard (though the protocol allows it, | |
4915 | so stubs shouldn't make an active effort to forbid | |
4916 | it). */ | |
4917 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4918 | { | |
4919 | struct thread_info *tp; | |
4920 | ||
4921 | if (ptid_equal (ptid, minus_one_ptid)) | |
4922 | { | |
4923 | /* If we don't know about the target thread's tid, then | |
4924 | we're resuming magic_null_ptid (see caller). */ | |
4925 | tp = find_thread_ptid (magic_null_ptid); | |
4926 | } | |
4927 | else | |
4928 | tp = find_thread_ptid (ptid); | |
4929 | gdb_assert (tp != NULL); | |
4930 | ||
4931 | if (tp->control.may_range_step) | |
4932 | { | |
4933 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4934 | ||
4935 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4936 | phex_nz (tp->control.step_range_start, | |
4937 | addr_size), | |
4938 | phex_nz (tp->control.step_range_end, | |
4939 | addr_size)); | |
4940 | } | |
4941 | else | |
4942 | p += xsnprintf (p, endp - p, ";s"); | |
4943 | } | |
0d8f58ca PA |
4944 | else if (step) |
4945 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4946 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4947 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4948 | else | |
4949 | p += xsnprintf (p, endp - p, ";c"); | |
4950 | ||
4951 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4952 | { | |
4953 | ptid_t nptid; | |
4954 | ||
4955 | /* All (-1) threads of process. */ | |
ba348170 | 4956 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
0d8f58ca PA |
4957 | |
4958 | p += xsnprintf (p, endp - p, ":"); | |
4959 | p = write_ptid (p, endp, nptid); | |
4960 | } | |
4961 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4962 | { | |
4963 | p += xsnprintf (p, endp - p, ":"); | |
4964 | p = write_ptid (p, endp, ptid); | |
4965 | } | |
4966 | ||
4967 | return p; | |
4968 | } | |
4969 | ||
e5ef252a PA |
4970 | /* Append a vCont continue-with-signal action for threads that have a |
4971 | non-zero stop signal. */ | |
4972 | ||
4973 | static char * | |
4974 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4975 | { | |
4976 | struct thread_info *thread; | |
4977 | ||
034f788c | 4978 | ALL_NON_EXITED_THREADS (thread) |
e5ef252a PA |
4979 | if (ptid_match (thread->ptid, ptid) |
4980 | && !ptid_equal (inferior_ptid, thread->ptid) | |
70509625 | 4981 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
4982 | { |
4983 | p = append_resumption (p, endp, thread->ptid, | |
4984 | 0, thread->suspend.stop_signal); | |
4985 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4986 | } | |
4987 | ||
4988 | return p; | |
4989 | } | |
4990 | ||
506fb367 DJ |
4991 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4992 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4993 | resumed thread should be single-stepped and/or signalled. If PTID |
4994 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4995 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4996 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4997 | |
506fb367 DJ |
4998 | This function issues a strict subset of all possible vCont commands at the |
4999 | moment. */ | |
44eaed12 | 5000 | |
506fb367 | 5001 | static int |
2ea28649 | 5002 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
5003 | { |
5004 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
5005 | char *p; |
5006 | char *endp; | |
44eaed12 | 5007 | |
4082afcc | 5008 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 5009 | remote_vcont_probe (rs); |
44eaed12 | 5010 | |
4082afcc | 5011 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 5012 | return 0; |
44eaed12 | 5013 | |
82f73884 PA |
5014 | p = rs->buf; |
5015 | endp = rs->buf + get_remote_packet_size (); | |
5016 | ||
506fb367 DJ |
5017 | /* If we could generate a wider range of packets, we'd have to worry |
5018 | about overflowing BUF. Should there be a generic | |
5019 | "multi-part-packet" packet? */ | |
5020 | ||
0d8f58ca PA |
5021 | p += xsnprintf (p, endp - p, "vCont"); |
5022 | ||
79d7f229 | 5023 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 5024 | { |
79d7f229 PA |
5025 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
5026 | so we don't have any TID numbers the inferior will | |
5027 | understand. Make sure to only send forms that do not specify | |
5028 | a TID. */ | |
a9cbf802 | 5029 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 5030 | } |
0d8f58ca | 5031 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 5032 | { |
0d8f58ca PA |
5033 | /* Resume all threads (of all processes, or of a single |
5034 | process), with preference for INFERIOR_PTID. This assumes | |
5035 | inferior_ptid belongs to the set of all threads we are about | |
5036 | to resume. */ | |
a493e3e2 | 5037 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 5038 | { |
0d8f58ca PA |
5039 | /* Step inferior_ptid, with or without signal. */ |
5040 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 5041 | } |
0d8f58ca | 5042 | |
e5ef252a PA |
5043 | /* Also pass down any pending signaled resumption for other |
5044 | threads not the current. */ | |
5045 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5046 | ||
0d8f58ca | 5047 | /* And continue others without a signal. */ |
a493e3e2 | 5048 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
5049 | } |
5050 | else | |
506fb367 DJ |
5051 | { |
5052 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 5053 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 5054 | } |
c906108c | 5055 | |
82f73884 PA |
5056 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
5057 | putpkt (rs->buf); | |
506fb367 | 5058 | |
74531fed PA |
5059 | if (non_stop) |
5060 | { | |
5061 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5062 | reply will be reported asynchronously by means of a `%Stop' | |
5063 | notification. */ | |
5064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5065 | if (strcmp (rs->buf, "OK") != 0) | |
5066 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5067 | } | |
5068 | ||
506fb367 | 5069 | return 1; |
c906108c | 5070 | } |
43ff13b4 | 5071 | |
506fb367 DJ |
5072 | /* Tell the remote machine to resume. */ |
5073 | ||
43ff13b4 | 5074 | static void |
28439f5e | 5075 | remote_resume (struct target_ops *ops, |
2ea28649 | 5076 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 5077 | { |
d01949b6 | 5078 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5079 | char *buf; |
43ff13b4 | 5080 | |
722247f1 YQ |
5081 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5082 | (explained in remote-notif.c:handle_notification) so | |
5083 | remote_notif_process is not called. We need find a place where | |
5084 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5085 | before resuming inferior, because inferior was stopped and no RSP | |
5086 | traffic at that moment. */ | |
5087 | if (!non_stop) | |
5965e028 | 5088 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 5089 | |
b73be471 | 5090 | rs->last_sent_signal = siggnal; |
280ceea3 | 5091 | rs->last_sent_step = step; |
43ff13b4 | 5092 | |
506fb367 | 5093 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
5094 | /* No reverse support (yet) for vCont. */ |
5095 | if (execution_direction != EXEC_REVERSE) | |
5096 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5097 | goto done; | |
506fb367 | 5098 | |
79d7f229 PA |
5099 | /* All other supported resume packets do use Hc, so set the continue |
5100 | thread. */ | |
5101 | if (ptid_equal (ptid, minus_one_ptid)) | |
5102 | set_continue_thread (any_thread_ptid); | |
506fb367 | 5103 | else |
79d7f229 | 5104 | set_continue_thread (ptid); |
506fb367 | 5105 | |
2e9f7625 | 5106 | buf = rs->buf; |
b2175913 MS |
5107 | if (execution_direction == EXEC_REVERSE) |
5108 | { | |
5109 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 5110 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 5111 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 5112 | siggnal); |
40ab02ce | 5113 | |
4082afcc | 5114 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
40ab02ce | 5115 | error (_("Remote reverse-step not supported.")); |
4082afcc | 5116 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
08c93ed9 | 5117 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 5118 | |
b2175913 MS |
5119 | strcpy (buf, step ? "bs" : "bc"); |
5120 | } | |
a493e3e2 | 5121 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
5122 | { |
5123 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 5124 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 5125 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
5126 | buf[3] = '\0'; |
5127 | } | |
5128 | else | |
c5aa993b | 5129 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 5130 | |
44eaed12 | 5131 | putpkt (buf); |
43ff13b4 | 5132 | |
75c99385 | 5133 | done: |
2acceee2 | 5134 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
5135 | with the event loop. NOTE: this is the one place where all the |
5136 | execution commands end up. We could alternatively do this in each | |
23860348 | 5137 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
5138 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
5139 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 5140 | NOT asynchronously. */ |
362646f5 | 5141 | if (target_can_async_p ()) |
6a3753b3 | 5142 | target_async (1); |
e24a49d8 PA |
5143 | |
5144 | /* We've just told the target to resume. The remote server will | |
5145 | wait for the inferior to stop, and then send a stop reply. In | |
5146 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
5147 | because the stub wouldn't be ready to process it. This applies |
5148 | only to the base all-stop protocol, however. In non-stop (which | |
5149 | only supports vCont), the stub replies with an "OK", and is | |
5150 | immediate able to process further serial input. */ | |
5151 | if (!non_stop) | |
5152 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 5153 | } |
c906108c | 5154 | \f |
43ff13b4 JM |
5155 | |
5156 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 5157 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 5158 | static void |
934b9bac | 5159 | async_initialize_sigint_signal_handler (void) |
43ff13b4 | 5160 | { |
934b9bac | 5161 | signal (SIGINT, async_handle_remote_sigint); |
43ff13b4 JM |
5162 | } |
5163 | ||
23860348 | 5164 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 5165 | static void |
934b9bac | 5166 | async_handle_remote_sigint (int sig) |
43ff13b4 | 5167 | { |
934b9bac | 5168 | signal (sig, async_handle_remote_sigint_twice); |
b2ee242b PA |
5169 | /* Note we need to go through gdb_call_async_signal_handler in order |
5170 | to wake up the event loop on Windows. */ | |
5171 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
43ff13b4 JM |
5172 | } |
5173 | ||
5174 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5175 | sent once. It will take effect the second time that the user sends | |
23860348 | 5176 | a ^C. */ |
43ff13b4 | 5177 | static void |
934b9bac | 5178 | async_handle_remote_sigint_twice (int sig) |
43ff13b4 | 5179 | { |
934b9bac | 5180 | signal (sig, async_handle_remote_sigint); |
b2ee242b PA |
5181 | /* See note in async_handle_remote_sigint. */ |
5182 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
43ff13b4 JM |
5183 | } |
5184 | ||
6426a772 | 5185 | /* Perform the real interruption of the target execution, in response |
23860348 | 5186 | to a ^C. */ |
c5aa993b | 5187 | static void |
fba45db2 | 5188 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
5189 | { |
5190 | if (remote_debug) | |
248fd3bf | 5191 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 5192 | |
94cc34af | 5193 | target_stop (inferior_ptid); |
43ff13b4 JM |
5194 | } |
5195 | ||
0df8b418 | 5196 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 5197 | up on the target alltogether. */ |
47e1ce27 | 5198 | static void |
fba45db2 | 5199 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 5200 | { |
2df3850c | 5201 | if (remote_debug) |
248fd3bf | 5202 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
5203 | |
5204 | interrupt_query (); | |
43ff13b4 JM |
5205 | } |
5206 | ||
5207 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 5208 | stopped. */ |
6426a772 | 5209 | static void |
934b9bac | 5210 | async_cleanup_sigint_signal_handler (void *dummy) |
43ff13b4 JM |
5211 | { |
5212 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
5213 | } |
5214 | ||
c906108c SS |
5215 | /* Send ^C to target to halt it. Target will respond, and send us a |
5216 | packet. */ | |
507f3c78 | 5217 | static void (*ofunc) (int); |
c906108c | 5218 | |
bfedc46a PA |
5219 | /* The command line interface's interrupt routine. This function is installed |
5220 | as a signal handler for SIGINT. The first time a user requests an | |
5221 | interrupt, we call remote_interrupt to send a break or ^C. If there is no | |
7a292a7a | 5222 | response from the target (it didn't stop when the user requested it), |
23860348 | 5223 | we ask the user if he'd like to detach from the target. */ |
bfedc46a | 5224 | |
c906108c | 5225 | static void |
934b9bac | 5226 | sync_remote_interrupt (int signo) |
c906108c | 5227 | { |
23860348 | 5228 | /* If this doesn't work, try more severe steps. */ |
934b9bac | 5229 | signal (signo, sync_remote_interrupt_twice); |
7a292a7a | 5230 | |
934b9bac | 5231 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
7a292a7a SS |
5232 | } |
5233 | ||
5234 | /* The user typed ^C twice. */ | |
5235 | ||
5236 | static void | |
934b9bac | 5237 | sync_remote_interrupt_twice (int signo) |
7a292a7a SS |
5238 | { |
5239 | signal (signo, ofunc); | |
934b9bac JK |
5240 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5241 | signal (signo, sync_remote_interrupt); | |
c906108c | 5242 | } |
7a292a7a | 5243 | |
74531fed PA |
5244 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
5245 | thread, all threads of a remote process, or all threads of all | |
5246 | processes. */ | |
5247 | ||
5248 | static void | |
5249 | remote_stop_ns (ptid_t ptid) | |
5250 | { | |
5251 | struct remote_state *rs = get_remote_state (); | |
5252 | char *p = rs->buf; | |
5253 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed | 5254 | |
4082afcc | 5255 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
74531fed PA |
5256 | remote_vcont_probe (rs); |
5257 | ||
d458bd84 | 5258 | if (!rs->supports_vCont.t) |
74531fed PA |
5259 | error (_("Remote server does not support stopping threads")); |
5260 | ||
f91d3df5 PA |
5261 | if (ptid_equal (ptid, minus_one_ptid) |
5262 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5263 | p += xsnprintf (p, endp - p, "vCont;t"); |
5264 | else | |
5265 | { | |
5266 | ptid_t nptid; | |
5267 | ||
74531fed PA |
5268 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5269 | ||
5270 | if (ptid_is_pid (ptid)) | |
5271 | /* All (-1) threads of process. */ | |
ba348170 | 5272 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
74531fed PA |
5273 | else |
5274 | { | |
5275 | /* Small optimization: if we already have a stop reply for | |
5276 | this thread, no use in telling the stub we want this | |
5277 | stopped. */ | |
5278 | if (peek_stop_reply (ptid)) | |
5279 | return; | |
5280 | ||
5281 | nptid = ptid; | |
5282 | } | |
5283 | ||
a9cbf802 | 5284 | write_ptid (p, endp, nptid); |
74531fed PA |
5285 | } |
5286 | ||
5287 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5288 | come in asynchronously by notification. */ | |
5289 | putpkt (rs->buf); | |
5290 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5291 | if (strcmp (rs->buf, "OK") != 0) | |
5292 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5293 | } | |
5294 | ||
bfedc46a PA |
5295 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
5296 | interrupt the remote target. It is undefined which thread of which | |
5297 | process reports the interrupt. */ | |
74531fed PA |
5298 | |
5299 | static void | |
bfedc46a | 5300 | remote_interrupt_as (ptid_t ptid) |
74531fed PA |
5301 | { |
5302 | struct remote_state *rs = get_remote_state (); | |
5303 | ||
3a29589a DJ |
5304 | rs->ctrlc_pending_p = 1; |
5305 | ||
74531fed PA |
5306 | /* If the inferior is stopped already, but the core didn't know |
5307 | about it yet, just ignore the request. The cached wait status | |
5308 | will be collected in remote_wait. */ | |
5309 | if (rs->cached_wait_status) | |
5310 | return; | |
5311 | ||
9a7071a8 JB |
5312 | /* Send interrupt_sequence to remote target. */ |
5313 | send_interrupt_sequence (); | |
74531fed PA |
5314 | } |
5315 | ||
bfedc46a | 5316 | /* Implement the to_stop function for the remote targets. */ |
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 |
bfedc46a PA |
5327 | { |
5328 | /* We don't currently have a way to transparently pause the | |
5329 | remote target in all-stop mode. Interrupt it instead. */ | |
5330 | remote_interrupt_as (ptid); | |
5331 | } | |
5332 | } | |
5333 | ||
5334 | /* Implement the to_interrupt function for the remote targets. */ | |
5335 | ||
5336 | static void | |
5337 | remote_interrupt (struct target_ops *self, ptid_t ptid) | |
5338 | { | |
5339 | if (remote_debug) | |
5340 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
5341 | ||
5342 | if (non_stop) | |
5343 | { | |
5344 | /* We don't currently have a way to ^C the remote target in | |
5345 | non-stop mode. Stop it (with no signal) instead. */ | |
5346 | remote_stop_ns (ptid); | |
5347 | } | |
5348 | else | |
5349 | remote_interrupt_as (ptid); | |
c906108c SS |
5350 | } |
5351 | ||
5352 | /* Ask the user what to do when an interrupt is received. */ | |
5353 | ||
5354 | static void | |
fba45db2 | 5355 | interrupt_query (void) |
c906108c SS |
5356 | { |
5357 | target_terminal_ours (); | |
5358 | ||
d9d41e78 | 5359 | if (target_is_async_p ()) |
c906108c | 5360 | { |
74531fed | 5361 | signal (SIGINT, handle_sigint); |
039e3c22 | 5362 | quit (); |
c906108c | 5363 | } |
74531fed PA |
5364 | else |
5365 | { | |
9e2f0ad4 HZ |
5366 | if (query (_("Interrupted while waiting for the program.\n\ |
5367 | Give up (and stop debugging it)? "))) | |
74531fed | 5368 | { |
78a095c3 | 5369 | remote_unpush_target (); |
039e3c22 | 5370 | quit (); |
74531fed PA |
5371 | } |
5372 | } | |
c906108c SS |
5373 | |
5374 | target_terminal_inferior (); | |
5375 | } | |
5376 | ||
6426a772 JM |
5377 | /* Enable/disable target terminal ownership. Most targets can use |
5378 | terminal groups to control terminal ownership. Remote targets are | |
5379 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5380 | is required. */ |
6426a772 JM |
5381 | |
5382 | static void | |
d2f640d4 | 5383 | remote_terminal_inferior (struct target_ops *self) |
6426a772 | 5384 | { |
c6ebd6cf | 5385 | if (!target_async_permitted) |
75c99385 PA |
5386 | /* Nothing to do. */ |
5387 | return; | |
5388 | ||
d9d2d8b6 PA |
5389 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5390 | idempotent. The event-loop GDB talking to an asynchronous target | |
5391 | with a synchronous command calls this function from both | |
5392 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5393 | transfer the terminal to the target when it shouldn't this guard | |
5394 | can go away. */ | |
6426a772 JM |
5395 | if (!remote_async_terminal_ours_p) |
5396 | return; | |
5397 | delete_file_handler (input_fd); | |
5398 | remote_async_terminal_ours_p = 0; | |
934b9bac | 5399 | async_initialize_sigint_signal_handler (); |
6426a772 JM |
5400 | /* NOTE: At this point we could also register our selves as the |
5401 | recipient of all input. Any characters typed could then be | |
23860348 | 5402 | passed on down to the target. */ |
6426a772 JM |
5403 | } |
5404 | ||
5405 | static void | |
e3594fd1 | 5406 | remote_terminal_ours (struct target_ops *self) |
6426a772 | 5407 | { |
c6ebd6cf | 5408 | if (!target_async_permitted) |
75c99385 PA |
5409 | /* Nothing to do. */ |
5410 | return; | |
5411 | ||
5412 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5413 | if (remote_async_terminal_ours_p) |
5414 | return; | |
934b9bac | 5415 | async_cleanup_sigint_signal_handler (NULL); |
6426a772 JM |
5416 | add_file_handler (input_fd, stdin_event_handler, 0); |
5417 | remote_async_terminal_ours_p = 1; | |
5418 | } | |
5419 | ||
176a6961 | 5420 | static void |
917317f4 | 5421 | remote_console_output (char *msg) |
c906108c SS |
5422 | { |
5423 | char *p; | |
5424 | ||
c5aa993b | 5425 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5426 | { |
5427 | char tb[2]; | |
5428 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5429 | |
c906108c SS |
5430 | tb[0] = c; |
5431 | tb[1] = 0; | |
43ff13b4 | 5432 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5433 | } |
00db5b94 PA |
5434 | gdb_flush (gdb_stdtarg); |
5435 | } | |
74531fed PA |
5436 | |
5437 | typedef struct cached_reg | |
5438 | { | |
5439 | int num; | |
5440 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5441 | } cached_reg_t; | |
5442 | ||
5443 | DEF_VEC_O(cached_reg_t); | |
5444 | ||
722247f1 | 5445 | typedef struct stop_reply |
74531fed | 5446 | { |
722247f1 | 5447 | struct notif_event base; |
74531fed | 5448 | |
722247f1 | 5449 | /* The identifier of the thread about this event */ |
74531fed PA |
5450 | ptid_t ptid; |
5451 | ||
340e3c99 | 5452 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
5453 | connection, represented by a remote_state object, is closed, |
5454 | all the associated stop_reply events should be released. */ | |
5455 | struct remote_state *rs; | |
5456 | ||
74531fed PA |
5457 | struct target_waitstatus ws; |
5458 | ||
15148d6a PA |
5459 | /* Expedited registers. This makes remote debugging a bit more |
5460 | efficient for those targets that provide critical registers as | |
5461 | part of their normal status mechanism (as another roundtrip to | |
5462 | fetch them is avoided). */ | |
74531fed PA |
5463 | VEC(cached_reg_t) *regcache; |
5464 | ||
f7e6eed5 PA |
5465 | enum target_stop_reason stop_reason; |
5466 | ||
74531fed PA |
5467 | CORE_ADDR watch_data_address; |
5468 | ||
dc146f7c | 5469 | int core; |
722247f1 | 5470 | } *stop_reply_p; |
a744cf53 | 5471 | |
722247f1 YQ |
5472 | DECLARE_QUEUE_P (stop_reply_p); |
5473 | DEFINE_QUEUE_P (stop_reply_p); | |
5474 | /* The list of already fetched and acknowledged stop events. This | |
5475 | queue is used for notification Stop, and other notifications | |
5476 | don't need queue for their events, because the notification events | |
5477 | of Stop can't be consumed immediately, so that events should be | |
5478 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5479 | time. Other notifications can consume their events immediately, | |
5480 | so queue is not needed for them. */ | |
5481 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5482 | |
5483 | static void | |
5484 | stop_reply_xfree (struct stop_reply *r) | |
5485 | { | |
f48ff2a7 | 5486 | notif_event_xfree ((struct notif_event *) r); |
c906108c SS |
5487 | } |
5488 | ||
722247f1 YQ |
5489 | static void |
5490 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5491 | struct notif_event *event) | |
5492 | { | |
5493 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5494 | } | |
5495 | ||
5496 | static void | |
5497 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5498 | struct notif_event *event) | |
5499 | { | |
5500 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5501 | ||
5502 | /* acknowledge */ | |
5503 | putpkt ((char *) self->ack_command); | |
5504 | ||
5505 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5506 | /* We got an unknown stop reply. */ | |
5507 | error (_("Unknown stop reply")); | |
5508 | ||
5509 | push_stop_reply (stop_reply); | |
5510 | } | |
5511 | ||
5512 | static int | |
5513 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5514 | { | |
5515 | /* We can't get pending events in remote_notif_process for | |
5516 | notification stop, and we have to do this in remote_wait_ns | |
5517 | instead. If we fetch all queued events from stub, remote stub | |
5518 | may exit and we have no chance to process them back in | |
5519 | remote_wait_ns. */ | |
5520 | mark_async_event_handler (remote_async_inferior_event_token); | |
5521 | return 0; | |
5522 | } | |
5523 | ||
5524 | static void | |
5525 | stop_reply_dtr (struct notif_event *event) | |
5526 | { | |
5527 | struct stop_reply *r = (struct stop_reply *) event; | |
5528 | ||
5529 | VEC_free (cached_reg_t, r->regcache); | |
5530 | } | |
5531 | ||
5532 | static struct notif_event * | |
5533 | remote_notif_stop_alloc_reply (void) | |
5534 | { | |
5535 | struct notif_event *r | |
70ba0933 | 5536 | = (struct notif_event *) XNEW (struct stop_reply); |
722247f1 YQ |
5537 | |
5538 | r->dtr = stop_reply_dtr; | |
5539 | ||
5540 | return r; | |
5541 | } | |
5542 | ||
5543 | /* A client of notification Stop. */ | |
5544 | ||
5545 | struct notif_client notif_client_stop = | |
5546 | { | |
5547 | "Stop", | |
5548 | "vStopped", | |
5549 | remote_notif_stop_parse, | |
5550 | remote_notif_stop_ack, | |
5551 | remote_notif_stop_can_get_pending_events, | |
5552 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 5553 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
5554 | }; |
5555 | ||
5556 | /* A parameter to pass data in and out. */ | |
5557 | ||
5558 | struct queue_iter_param | |
5559 | { | |
5560 | void *input; | |
5561 | struct stop_reply *output; | |
5562 | }; | |
5563 | ||
cbb8991c DB |
5564 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5565 | the pid of the process that owns the threads we want to check, or | |
5566 | -1 if we want to check all threads. */ | |
5567 | ||
5568 | static int | |
5569 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5570 | ptid_t thread_ptid) | |
5571 | { | |
5572 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5573 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5574 | { | |
5575 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5576 | return 1; | |
5577 | } | |
5578 | ||
5579 | return 0; | |
5580 | } | |
5581 | ||
5582 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5583 | fork child from the context list passed in DATA. */ | |
5584 | ||
5585 | static int | |
5586 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5587 | QUEUE_ITER (stop_reply_p) *iter, | |
5588 | stop_reply_p event, | |
5589 | void *data) | |
5590 | { | |
5591 | struct queue_iter_param *param = data; | |
5592 | struct threads_listing_context *context = param->input; | |
5593 | ||
5594 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5595 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5596 | { | |
5597 | threads_listing_context_remove (&event->ws, context); | |
5598 | } | |
5599 | ||
5600 | return 1; | |
5601 | } | |
5602 | ||
5603 | /* If CONTEXT contains any fork child threads that have not been | |
5604 | reported yet, remove them from the CONTEXT list. If such a | |
5605 | thread exists it is because we are stopped at a fork catchpoint | |
5606 | and have not yet called follow_fork, which will set up the | |
5607 | host-side data structures for the new process. */ | |
5608 | ||
5609 | static void | |
5610 | remove_new_fork_children (struct threads_listing_context *context) | |
5611 | { | |
5612 | struct thread_info * thread; | |
5613 | int pid = -1; | |
5614 | struct notif_client *notif = ¬if_client_stop; | |
5615 | struct queue_iter_param param; | |
5616 | ||
5617 | /* For any threads stopped at a fork event, remove the corresponding | |
5618 | fork child threads from the CONTEXT list. */ | |
5619 | ALL_NON_EXITED_THREADS (thread) | |
5620 | { | |
5621 | struct target_waitstatus *ws = &thread->pending_follow; | |
5622 | ||
5623 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5624 | { | |
5625 | threads_listing_context_remove (ws, context); | |
5626 | } | |
5627 | } | |
5628 | ||
5629 | /* Check for any pending fork events (not reported or processed yet) | |
5630 | in process PID and remove those fork child threads from the | |
5631 | CONTEXT list as well. */ | |
5632 | remote_notif_get_pending_events (notif); | |
5633 | param.input = context; | |
5634 | param.output = NULL; | |
5635 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5636 | remove_child_of_pending_fork, ¶m); | |
5637 | } | |
5638 | ||
f48ff2a7 YQ |
5639 | /* Remove stop replies in the queue if its pid is equal to the given |
5640 | inferior's pid. */ | |
722247f1 YQ |
5641 | |
5642 | static int | |
f48ff2a7 YQ |
5643 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5644 | QUEUE_ITER (stop_reply_p) *iter, | |
5645 | stop_reply_p event, | |
5646 | void *data) | |
722247f1 YQ |
5647 | { |
5648 | struct queue_iter_param *param = data; | |
5649 | struct inferior *inf = param->input; | |
5650 | ||
f48ff2a7 | 5651 | if (ptid_get_pid (event->ptid) == inf->pid) |
722247f1 YQ |
5652 | { |
5653 | stop_reply_xfree (event); | |
5654 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5655 | } | |
5656 | ||
5657 | return 1; | |
5658 | } | |
5659 | ||
f48ff2a7 | 5660 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 5661 | |
74531fed | 5662 | static void |
5f4cf0bb | 5663 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5664 | { |
722247f1 YQ |
5665 | int i; |
5666 | struct queue_iter_param param; | |
f48ff2a7 YQ |
5667 | struct stop_reply *reply; |
5668 | struct remote_state *rs = get_remote_state (); | |
5669 | struct remote_notif_state *rns = rs->notif_state; | |
5670 | ||
5671 | /* This function can be notified when an inferior exists. When the | |
5672 | target is not remote, the notification state is NULL. */ | |
5673 | if (rs->remote_desc == NULL) | |
5674 | return; | |
5675 | ||
5676 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 5677 | |
74531fed | 5678 | /* Discard the in-flight notification. */ |
f48ff2a7 | 5679 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
74531fed | 5680 | { |
722247f1 | 5681 | stop_reply_xfree (reply); |
f48ff2a7 | 5682 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 5683 | } |
c906108c | 5684 | |
722247f1 YQ |
5685 | param.input = inf; |
5686 | param.output = NULL; | |
74531fed PA |
5687 | /* Discard the stop replies we have already pulled with |
5688 | vStopped. */ | |
722247f1 | 5689 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
f48ff2a7 YQ |
5690 | remove_stop_reply_for_inferior, ¶m); |
5691 | } | |
5692 | ||
bcc75809 YQ |
5693 | /* If its remote state is equal to the given remote state, |
5694 | remove EVENT from the stop reply queue. */ | |
5695 | ||
5696 | static int | |
5697 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5698 | QUEUE_ITER (stop_reply_p) *iter, | |
5699 | stop_reply_p event, | |
5700 | void *data) | |
5701 | { | |
5702 | struct queue_iter_param *param = data; | |
5703 | struct remote_state *rs = param->input; | |
5704 | ||
5705 | if (event->rs == rs) | |
5706 | { | |
5707 | stop_reply_xfree (event); | |
5708 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5709 | } | |
5710 | ||
5711 | return 1; | |
5712 | } | |
5713 | ||
5714 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 YQ |
5715 | |
5716 | static void | |
bcc75809 | 5717 | discard_pending_stop_replies_in_queue (struct remote_state *rs) |
f48ff2a7 YQ |
5718 | { |
5719 | struct queue_iter_param param; | |
5720 | ||
bcc75809 | 5721 | param.input = rs; |
f48ff2a7 YQ |
5722 | param.output = NULL; |
5723 | /* Discard the stop replies we have already pulled with | |
5724 | vStopped. */ | |
5725 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
bcc75809 | 5726 | remove_stop_reply_of_remote_state, ¶m); |
722247f1 | 5727 | } |
74531fed | 5728 | |
722247f1 YQ |
5729 | /* A parameter to pass data in and out. */ |
5730 | ||
5731 | static int | |
5732 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5733 | QUEUE_ITER (stop_reply_p) *iter, | |
5734 | stop_reply_p event, | |
5735 | void *data) | |
5736 | { | |
5737 | struct queue_iter_param *param = data; | |
5738 | ptid_t *ptid = param->input; | |
5739 | ||
5740 | if (ptid_match (event->ptid, *ptid)) | |
5741 | { | |
5742 | param->output = event; | |
5743 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5744 | return 0; | |
c8e38a49 | 5745 | } |
722247f1 YQ |
5746 | |
5747 | return 1; | |
74531fed | 5748 | } |
43ff13b4 | 5749 | |
722247f1 YQ |
5750 | /* Remove the first reply in 'stop_reply_queue' which matches |
5751 | PTID. */ | |
2e9f7625 | 5752 | |
722247f1 YQ |
5753 | static struct stop_reply * |
5754 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5755 | { |
722247f1 YQ |
5756 | struct queue_iter_param param; |
5757 | ||
5758 | param.input = &ptid; | |
5759 | param.output = NULL; | |
5760 | ||
5761 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5762 | remote_notif_remove_once_on_match, ¶m); | |
5763 | if (notif_debug) | |
5764 | fprintf_unfiltered (gdb_stdlog, | |
5765 | "notif: discard queued event: 'Stop' in %s\n", | |
5766 | target_pid_to_str (ptid)); | |
a744cf53 | 5767 | |
722247f1 | 5768 | return param.output; |
74531fed | 5769 | } |
75c99385 | 5770 | |
74531fed PA |
5771 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5772 | remove it from the queue, and return it. Returns NULL if none is | |
5773 | found. If there are still queued events left to process, tell the | |
5774 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5775 | |
74531fed PA |
5776 | static struct stop_reply * |
5777 | queued_stop_reply (ptid_t ptid) | |
5778 | { | |
722247f1 | 5779 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5780 | |
722247f1 | 5781 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5782 | /* There's still at least an event left. */ |
5783 | mark_async_event_handler (remote_async_inferior_event_token); | |
5784 | ||
722247f1 | 5785 | return r; |
74531fed PA |
5786 | } |
5787 | ||
5788 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5789 | know that we now have at least one queued event left to pass to the | |
5790 | core side, tell the event loop to get back to target_wait soon. */ | |
5791 | ||
5792 | static void | |
5793 | push_stop_reply (struct stop_reply *new_event) | |
5794 | { | |
722247f1 | 5795 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5796 | |
722247f1 YQ |
5797 | if (notif_debug) |
5798 | fprintf_unfiltered (gdb_stdlog, | |
5799 | "notif: push 'Stop' %s to queue %d\n", | |
5800 | target_pid_to_str (new_event->ptid), | |
5801 | QUEUE_length (stop_reply_p, | |
5802 | stop_reply_queue)); | |
74531fed PA |
5803 | |
5804 | mark_async_event_handler (remote_async_inferior_event_token); | |
5805 | } | |
5806 | ||
722247f1 YQ |
5807 | static int |
5808 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5809 | QUEUE_ITER (stop_reply_p) *iter, | |
5810 | struct stop_reply *event, | |
5811 | void *data) | |
5812 | { | |
5813 | ptid_t *ptid = data; | |
5814 | ||
5815 | return !(ptid_equal (*ptid, event->ptid) | |
5816 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5817 | } | |
5818 | ||
74531fed PA |
5819 | /* Returns true if we have a stop reply for PTID. */ |
5820 | ||
5821 | static int | |
5822 | peek_stop_reply (ptid_t ptid) | |
5823 | { | |
722247f1 YQ |
5824 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5825 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5826 | } |
5827 | ||
1f10ba14 PA |
5828 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5829 | ||
5830 | static char * | |
5831 | skip_to_semicolon (char *p) | |
5832 | { | |
5833 | while (*p != '\0' && *p != ';') | |
5834 | p++; | |
5835 | return p; | |
5836 | } | |
5837 | ||
26d56a93 SL |
5838 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
5839 | starting with P and ending with PEND matches PREFIX. */ | |
5840 | ||
5841 | static int | |
5842 | strprefix (const char *p, const char *pend, const char *prefix) | |
5843 | { | |
5844 | for ( ; p < pend; p++, prefix++) | |
5845 | if (*p != *prefix) | |
5846 | return 0; | |
5847 | return *prefix == '\0'; | |
5848 | } | |
5849 | ||
74531fed PA |
5850 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5851 | result is stored in EVENT, or throws an error. */ | |
5852 | ||
5853 | static void | |
5854 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5855 | { | |
5856 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5857 | ULONGEST addr; | |
5858 | char *p; | |
5859 | ||
5860 | event->ptid = null_ptid; | |
bcc75809 | 5861 | event->rs = get_remote_state (); |
74531fed PA |
5862 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5863 | event->ws.value.integer = 0; | |
f7e6eed5 | 5864 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed | 5865 | event->regcache = NULL; |
dc146f7c | 5866 | event->core = -1; |
74531fed PA |
5867 | |
5868 | switch (buf[0]) | |
5869 | { | |
5870 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5871 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5872 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5873 | ss = signal number | |
5874 | n... = register number | |
5875 | r... = register contents | |
5876 | */ | |
5877 | ||
5878 | p = &buf[3]; /* after Txx */ | |
5879 | while (*p) | |
5880 | { | |
5881 | char *p1; | |
cea39f65 | 5882 | int fieldsize; |
43ff13b4 | 5883 | |
1f10ba14 PA |
5884 | p1 = strchr (p, ':'); |
5885 | if (p1 == NULL) | |
5886 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
5887 | Packet: '%s'\n"), | |
5888 | p, buf); | |
5889 | if (p == p1) | |
5890 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
5891 | Packet: '%s'\n"), | |
5892 | p, buf); | |
3c3bea1c | 5893 | |
1f10ba14 PA |
5894 | /* Some "registers" are actually extended stop information. |
5895 | Note if you're adding a new entry here: GDB 7.9 and | |
5896 | earlier assume that all register "numbers" that start | |
5897 | with an hex digit are real register numbers. Make sure | |
5898 | the server only sends such a packet if it knows the | |
5899 | client understands it. */ | |
c8e38a49 | 5900 | |
26d56a93 | 5901 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 5902 | event->ptid = read_ptid (++p1, &p); |
26d56a93 SL |
5903 | else if (strprefix (p, p1, "watch") |
5904 | || strprefix (p, p1, "rwatch") | |
5905 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 5906 | { |
f7e6eed5 | 5907 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
5908 | p = unpack_varlen_hex (++p1, &addr); |
5909 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 5910 | } |
26d56a93 | 5911 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
5912 | { |
5913 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
5914 | ||
5915 | /* Make sure the stub doesn't forget to indicate support | |
5916 | with qSupported. */ | |
5917 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
5918 | error (_("Unexpected swbreak stop reason")); | |
5919 | ||
5920 | /* The value part is documented as "must be empty", | |
5921 | though we ignore it, in case we ever decide to make | |
5922 | use of it in a backward compatible way. */ | |
5923 | p = skip_to_semicolon (p1 + 1); | |
5924 | } | |
26d56a93 | 5925 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
5926 | { |
5927 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
5928 | ||
5929 | /* Make sure the stub doesn't forget to indicate support | |
5930 | with qSupported. */ | |
5931 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
5932 | error (_("Unexpected hwbreak stop reason")); | |
5933 | ||
5934 | /* See above. */ | |
5935 | p = skip_to_semicolon (p1 + 1); | |
5936 | } | |
26d56a93 | 5937 | else if (strprefix (p, p1, "library")) |
cea39f65 | 5938 | { |
1f10ba14 PA |
5939 | event->ws.kind = TARGET_WAITKIND_LOADED; |
5940 | p = skip_to_semicolon (p1 + 1); | |
5941 | } | |
26d56a93 | 5942 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
5943 | { |
5944 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
5945 | /* p1 will indicate "begin" or "end", but it makes | |
5946 | no difference for now, so ignore it. */ | |
5947 | p = skip_to_semicolon (p1 + 1); | |
5948 | } | |
26d56a93 | 5949 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
5950 | { |
5951 | ULONGEST c; | |
a744cf53 | 5952 | |
1f10ba14 PA |
5953 | p = unpack_varlen_hex (++p1, &c); |
5954 | event->core = c; | |
cea39f65 | 5955 | } |
26d56a93 | 5956 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
5957 | { |
5958 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5959 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
5960 | } | |
26d56a93 | 5961 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
5962 | { |
5963 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5964 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
5965 | } | |
26d56a93 | 5966 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
5967 | { |
5968 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
5969 | p = skip_to_semicolon (p1 + 1); | |
5970 | } | |
cea39f65 MS |
5971 | else |
5972 | { | |
1f10ba14 PA |
5973 | ULONGEST pnum; |
5974 | char *p_temp; | |
5975 | ||
5976 | /* Maybe a real ``P'' register number. */ | |
5977 | p_temp = unpack_varlen_hex (p, &pnum); | |
5978 | /* If the first invalid character is the colon, we got a | |
5979 | register number. Otherwise, it's an unknown stop | |
5980 | reason. */ | |
5981 | if (p_temp == p1) | |
5982 | { | |
5983 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5984 | cached_reg_t cached_reg; | |
43ff13b4 | 5985 | |
1f10ba14 PA |
5986 | if (reg == NULL) |
5987 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5988 | Packet: '%s'\n"), |
1f10ba14 | 5989 | hex_string (pnum), p, buf); |
c8e38a49 | 5990 | |
1f10ba14 | 5991 | cached_reg.num = reg->regnum; |
4100683b | 5992 | |
1f10ba14 PA |
5993 | p = p1 + 1; |
5994 | fieldsize = hex2bin (p, cached_reg.data, | |
5995 | register_size (target_gdbarch (), | |
5996 | reg->regnum)); | |
5997 | p += 2 * fieldsize; | |
5998 | if (fieldsize < register_size (target_gdbarch (), | |
5999 | reg->regnum)) | |
6000 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 6001 | |
1f10ba14 PA |
6002 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6003 | } | |
6004 | else | |
6005 | { | |
6006 | /* Not a number. Silently skip unknown optional | |
6007 | info. */ | |
6008 | p = skip_to_semicolon (p1 + 1); | |
6009 | } | |
cea39f65 | 6010 | } |
c8e38a49 | 6011 | |
cea39f65 MS |
6012 | if (*p != ';') |
6013 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6014 | buf, p); | |
6015 | ++p; | |
6016 | } | |
5b5596ff PA |
6017 | |
6018 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6019 | break; | |
6020 | ||
c8e38a49 PA |
6021 | /* fall through */ |
6022 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
6023 | { |
6024 | int sig; | |
6025 | ||
6026 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6027 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6028 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6029 | event->ws.value.sig = (enum gdb_signal) sig; | |
6030 | else | |
6031 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6032 | } | |
c8e38a49 PA |
6033 | break; |
6034 | case 'W': /* Target exited. */ | |
6035 | case 'X': | |
6036 | { | |
6037 | char *p; | |
6038 | int pid; | |
6039 | ULONGEST value; | |
82f73884 | 6040 | |
c8e38a49 PA |
6041 | /* GDB used to accept only 2 hex chars here. Stubs should |
6042 | only send more if they detect GDB supports multi-process | |
6043 | support. */ | |
6044 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 6045 | |
c8e38a49 PA |
6046 | if (buf[0] == 'W') |
6047 | { | |
6048 | /* The remote process exited. */ | |
74531fed PA |
6049 | event->ws.kind = TARGET_WAITKIND_EXITED; |
6050 | event->ws.value.integer = value; | |
c8e38a49 PA |
6051 | } |
6052 | else | |
6053 | { | |
6054 | /* The remote process exited with a signal. */ | |
74531fed | 6055 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
6056 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6057 | event->ws.value.sig = (enum gdb_signal) value; | |
6058 | else | |
6059 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 6060 | } |
82f73884 | 6061 | |
c8e38a49 PA |
6062 | /* If no process is specified, assume inferior_ptid. */ |
6063 | pid = ptid_get_pid (inferior_ptid); | |
6064 | if (*p == '\0') | |
6065 | ; | |
6066 | else if (*p == ';') | |
6067 | { | |
6068 | p++; | |
6069 | ||
0b24eb2d | 6070 | if (*p == '\0') |
82f73884 | 6071 | ; |
61012eef | 6072 | else if (startswith (p, "process:")) |
82f73884 | 6073 | { |
c8e38a49 | 6074 | ULONGEST upid; |
a744cf53 | 6075 | |
c8e38a49 PA |
6076 | p += sizeof ("process:") - 1; |
6077 | unpack_varlen_hex (p, &upid); | |
6078 | pid = upid; | |
82f73884 PA |
6079 | } |
6080 | else | |
6081 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 6082 | } |
c8e38a49 PA |
6083 | else |
6084 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
6085 | event->ptid = pid_to_ptid (pid); |
6086 | } | |
6087 | break; | |
6088 | } | |
6089 | ||
6090 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6091 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6092 | } | |
6093 | ||
722247f1 YQ |
6094 | /* When the stub wants to tell GDB about a new notification reply, it |
6095 | sends a notification (%Stop, for example). Those can come it at | |
6096 | any time, hence, we have to make sure that any pending | |
6097 | putpkt/getpkt sequence we're making is finished, before querying | |
6098 | the stub for more events with the corresponding ack command | |
6099 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6100 | immediately upon receiving the notification, something like this | |
6101 | could happen: | |
74531fed PA |
6102 | |
6103 | 1.1) --> Hg 1 | |
6104 | 1.2) <-- OK | |
6105 | 1.3) --> g | |
6106 | 1.4) <-- %Stop | |
6107 | 1.5) --> vStopped | |
6108 | 1.6) <-- (registers reply to step #1.3) | |
6109 | ||
6110 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6111 | query. | |
6112 | ||
796cb314 | 6113 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
6114 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6115 | doing whatever we were doing: | |
6116 | ||
6117 | 2.1) --> Hg 1 | |
6118 | 2.2) <-- OK | |
6119 | 2.3) --> g | |
6120 | 2.4) <-- %Stop | |
6121 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6122 | 2.5) <-- (registers reply to step #2.3) | |
6123 | ||
6124 | Eventualy after step #2.5, we return to the event loop, which | |
6125 | notices there's an event on the | |
6126 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6127 | associated callback --- the function below. At this point, we're | |
6128 | always safe to start a vStopped sequence. : | |
6129 | ||
6130 | 2.6) --> vStopped | |
6131 | 2.7) <-- T05 thread:2 | |
6132 | 2.8) --> vStopped | |
6133 | 2.9) --> OK | |
6134 | */ | |
6135 | ||
722247f1 YQ |
6136 | void |
6137 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
6138 | { |
6139 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6140 | |
f48ff2a7 | 6141 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 6142 | { |
722247f1 YQ |
6143 | if (notif_debug) |
6144 | fprintf_unfiltered (gdb_stdlog, | |
6145 | "notif: process: '%s' ack pending event\n", | |
6146 | nc->name); | |
74531fed | 6147 | |
722247f1 | 6148 | /* acknowledge */ |
f48ff2a7 YQ |
6149 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6150 | rs->notif_state->pending_event[nc->id] = NULL; | |
74531fed PA |
6151 | |
6152 | while (1) | |
6153 | { | |
6154 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6155 | if (strcmp (rs->buf, "OK") == 0) | |
6156 | break; | |
6157 | else | |
722247f1 | 6158 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
6159 | } |
6160 | } | |
722247f1 YQ |
6161 | else |
6162 | { | |
6163 | if (notif_debug) | |
6164 | fprintf_unfiltered (gdb_stdlog, | |
6165 | "notif: process: '%s' no pending reply\n", | |
6166 | nc->name); | |
6167 | } | |
74531fed PA |
6168 | } |
6169 | ||
74531fed PA |
6170 | /* Called when it is decided that STOP_REPLY holds the info of the |
6171 | event that is to be returned to the core. This function always | |
6172 | destroys STOP_REPLY. */ | |
6173 | ||
6174 | static ptid_t | |
6175 | process_stop_reply (struct stop_reply *stop_reply, | |
6176 | struct target_waitstatus *status) | |
6177 | { | |
6178 | ptid_t ptid; | |
6179 | ||
6180 | *status = stop_reply->ws; | |
6181 | ptid = stop_reply->ptid; | |
6182 | ||
6183 | /* If no thread/process was reported by the stub, assume the current | |
6184 | inferior. */ | |
6185 | if (ptid_equal (ptid, null_ptid)) | |
6186 | ptid = inferior_ptid; | |
6187 | ||
5f3563ea PA |
6188 | if (status->kind != TARGET_WAITKIND_EXITED |
6189 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 6190 | { |
ee154bee TT |
6191 | struct remote_state *rs = get_remote_state (); |
6192 | ||
5f3563ea PA |
6193 | /* Expedited registers. */ |
6194 | if (stop_reply->regcache) | |
6195 | { | |
217f1f79 | 6196 | struct regcache *regcache |
f5656ead | 6197 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
6198 | cached_reg_t *reg; |
6199 | int ix; | |
6200 | ||
6201 | for (ix = 0; | |
6202 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6203 | ix++) | |
217f1f79 | 6204 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
6205 | VEC_free (cached_reg_t, stop_reply->regcache); |
6206 | } | |
74531fed | 6207 | |
f7e6eed5 | 6208 | rs->stop_reason = stop_reply->stop_reason; |
ee154bee | 6209 | rs->remote_watch_data_address = stop_reply->watch_data_address; |
1941c569 PA |
6210 | |
6211 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 6212 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
6213 | } |
6214 | ||
74531fed PA |
6215 | stop_reply_xfree (stop_reply); |
6216 | return ptid; | |
6217 | } | |
6218 | ||
6219 | /* The non-stop mode version of target_wait. */ | |
6220 | ||
6221 | static ptid_t | |
47608cb1 | 6222 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6223 | { |
6224 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
6225 | struct stop_reply *stop_reply; |
6226 | int ret; | |
fee9eda9 | 6227 | int is_notif = 0; |
74531fed PA |
6228 | |
6229 | /* If in non-stop mode, get out of getpkt even if a | |
6230 | notification is received. */ | |
6231 | ||
6232 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 6233 | 0 /* forever */, &is_notif); |
74531fed PA |
6234 | while (1) |
6235 | { | |
fee9eda9 | 6236 | if (ret != -1 && !is_notif) |
74531fed PA |
6237 | switch (rs->buf[0]) |
6238 | { | |
6239 | case 'E': /* Error of some sort. */ | |
6240 | /* We're out of sync with the target now. Did it continue | |
6241 | or not? We can't tell which thread it was in non-stop, | |
6242 | so just ignore this. */ | |
6243 | warning (_("Remote failure reply: %s"), rs->buf); | |
6244 | break; | |
6245 | case 'O': /* Console output. */ | |
6246 | remote_console_output (rs->buf + 1); | |
6247 | break; | |
6248 | default: | |
6249 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6250 | break; | |
6251 | } | |
6252 | ||
6253 | /* Acknowledge a pending stop reply that may have arrived in the | |
6254 | mean time. */ | |
f48ff2a7 | 6255 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 6256 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
6257 | |
6258 | /* If indeed we noticed a stop reply, we're done. */ | |
6259 | stop_reply = queued_stop_reply (ptid); | |
6260 | if (stop_reply != NULL) | |
6261 | return process_stop_reply (stop_reply, status); | |
6262 | ||
47608cb1 | 6263 | /* Still no event. If we're just polling for an event, then |
74531fed | 6264 | return to the event loop. */ |
47608cb1 | 6265 | if (options & TARGET_WNOHANG) |
74531fed PA |
6266 | { |
6267 | status->kind = TARGET_WAITKIND_IGNORE; | |
6268 | return minus_one_ptid; | |
6269 | } | |
6270 | ||
47608cb1 | 6271 | /* Otherwise do a blocking wait. */ |
74531fed | 6272 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 6273 | 1 /* forever */, &is_notif); |
74531fed PA |
6274 | } |
6275 | } | |
6276 | ||
6277 | /* Wait until the remote machine stops, then return, storing status in | |
6278 | STATUS just as `wait' would. */ | |
6279 | ||
6280 | static ptid_t | |
47608cb1 | 6281 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
6282 | { |
6283 | struct remote_state *rs = get_remote_state (); | |
74531fed | 6284 | ptid_t event_ptid = null_ptid; |
cea39f65 | 6285 | char *buf; |
74531fed PA |
6286 | struct stop_reply *stop_reply; |
6287 | ||
47608cb1 PA |
6288 | again: |
6289 | ||
74531fed PA |
6290 | status->kind = TARGET_WAITKIND_IGNORE; |
6291 | status->value.integer = 0; | |
6292 | ||
6293 | stop_reply = queued_stop_reply (ptid); | |
6294 | if (stop_reply != NULL) | |
6295 | return process_stop_reply (stop_reply, status); | |
6296 | ||
6297 | if (rs->cached_wait_status) | |
6298 | /* Use the cached wait status, but only once. */ | |
6299 | rs->cached_wait_status = 0; | |
6300 | else | |
6301 | { | |
6302 | int ret; | |
722247f1 | 6303 | int is_notif; |
567420d1 PA |
6304 | int forever = ((options & TARGET_WNOHANG) == 0 |
6305 | && wait_forever_enabled_p); | |
6306 | ||
6307 | if (!rs->waiting_for_stop_reply) | |
6308 | { | |
6309 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
6310 | return minus_one_ptid; | |
6311 | } | |
74531fed PA |
6312 | |
6313 | if (!target_is_async_p ()) | |
6314 | { | |
934b9bac | 6315 | ofunc = signal (SIGINT, sync_remote_interrupt); |
74531fed PA |
6316 | /* If the user hit C-c before this packet, or between packets, |
6317 | pretend that it was hit right here. */ | |
522002f9 | 6318 | if (check_quit_flag ()) |
74531fed | 6319 | { |
522002f9 | 6320 | clear_quit_flag (); |
934b9bac | 6321 | sync_remote_interrupt (SIGINT); |
74531fed PA |
6322 | } |
6323 | } | |
6324 | ||
6325 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6326 | _never_ wait for ever -> test on target_is_async_p(). | |
6327 | However, before we do that we need to ensure that the caller | |
6328 | knows how to take the target into/out of async mode. */ | |
722247f1 | 6329 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
567420d1 | 6330 | forever, &is_notif); |
722247f1 | 6331 | |
5e1b953b SDJ |
6332 | if (!target_is_async_p ()) |
6333 | signal (SIGINT, ofunc); | |
6334 | ||
722247f1 YQ |
6335 | /* GDB gets a notification. Return to core as this event is |
6336 | not interesting. */ | |
6337 | if (ret != -1 && is_notif) | |
6338 | return minus_one_ptid; | |
567420d1 PA |
6339 | |
6340 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
6341 | return minus_one_ptid; | |
74531fed PA |
6342 | } |
6343 | ||
6344 | buf = rs->buf; | |
6345 | ||
f7e6eed5 | 6346 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
74531fed PA |
6347 | |
6348 | /* We got something. */ | |
6349 | rs->waiting_for_stop_reply = 0; | |
6350 | ||
3a29589a DJ |
6351 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6352 | an 'F' or 'O' packet. */ | |
6353 | if (buf[0] != 'F' && buf[0] != 'O') | |
6354 | rs->ctrlc_pending_p = 0; | |
6355 | ||
74531fed PA |
6356 | switch (buf[0]) |
6357 | { | |
6358 | case 'E': /* Error of some sort. */ | |
6359 | /* We're out of sync with the target now. Did it continue or | |
6360 | not? Not is more likely, so report a stop. */ | |
6361 | warning (_("Remote failure reply: %s"), buf); | |
6362 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 6363 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
6364 | break; |
6365 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
6366 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6367 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
6368 | break; |
6369 | case 'T': case 'S': case 'X': case 'W': | |
6370 | { | |
722247f1 YQ |
6371 | struct stop_reply *stop_reply |
6372 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6373 | rs->buf); | |
74531fed | 6374 | |
74531fed | 6375 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
6376 | break; |
6377 | } | |
6378 | case 'O': /* Console output. */ | |
6379 | remote_console_output (buf + 1); | |
e24a49d8 | 6380 | |
c8e38a49 PA |
6381 | /* The target didn't really stop; keep waiting. */ |
6382 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 6383 | |
c8e38a49 PA |
6384 | break; |
6385 | case '\0': | |
b73be471 | 6386 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
6387 | { |
6388 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6389 | remote system doesn't support it. */ | |
6390 | target_terminal_ours_for_output (); | |
6391 | printf_filtered | |
6392 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
6393 | gdb_signal_to_name (rs->last_sent_signal)); |
6394 | rs->last_sent_signal = GDB_SIGNAL_0; | |
c8e38a49 PA |
6395 | target_terminal_inferior (); |
6396 | ||
280ceea3 | 6397 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
c8e38a49 PA |
6398 | putpkt ((char *) buf); |
6399 | ||
6400 | /* We just told the target to resume, so a stop reply is in | |
6401 | order. */ | |
e24a49d8 | 6402 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 6403 | break; |
43ff13b4 | 6404 | } |
c8e38a49 PA |
6405 | /* else fallthrough */ |
6406 | default: | |
6407 | warning (_("Invalid remote reply: %s"), buf); | |
6408 | /* Keep waiting. */ | |
6409 | rs->waiting_for_stop_reply = 1; | |
6410 | break; | |
43ff13b4 | 6411 | } |
c8e38a49 | 6412 | |
c8e38a49 | 6413 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
6414 | { |
6415 | /* Nothing interesting happened. If we're doing a non-blocking | |
6416 | poll, we're done. Otherwise, go back to waiting. */ | |
6417 | if (options & TARGET_WNOHANG) | |
6418 | return minus_one_ptid; | |
6419 | else | |
6420 | goto again; | |
6421 | } | |
74531fed PA |
6422 | else if (status->kind != TARGET_WAITKIND_EXITED |
6423 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
6424 | { |
6425 | if (!ptid_equal (event_ptid, null_ptid)) | |
47f8a51d | 6426 | record_currthread (rs, event_ptid); |
82f73884 PA |
6427 | else |
6428 | event_ptid = inferior_ptid; | |
43ff13b4 | 6429 | } |
74531fed PA |
6430 | else |
6431 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 6432 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 6433 | |
82f73884 | 6434 | return event_ptid; |
43ff13b4 JM |
6435 | } |
6436 | ||
74531fed PA |
6437 | /* Wait until the remote machine stops, then return, storing status in |
6438 | STATUS just as `wait' would. */ | |
6439 | ||
c8e38a49 | 6440 | static ptid_t |
117de6a9 | 6441 | remote_wait (struct target_ops *ops, |
47608cb1 | 6442 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
6443 | { |
6444 | ptid_t event_ptid; | |
6445 | ||
74531fed | 6446 | if (non_stop) |
47608cb1 | 6447 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 6448 | else |
47608cb1 | 6449 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 6450 | |
d9d41e78 | 6451 | if (target_is_async_p ()) |
c8e38a49 | 6452 | { |
74531fed PA |
6453 | /* If there are are events left in the queue tell the event loop |
6454 | to return here. */ | |
722247f1 | 6455 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 6456 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 6457 | } |
c8e38a49 PA |
6458 | |
6459 | return event_ptid; | |
6460 | } | |
6461 | ||
74ca34ce | 6462 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6463 | |
b96ec7ac | 6464 | static int |
56be3814 | 6465 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6466 | { |
6467 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6468 | char *buf, *p; |
b96ec7ac AC |
6469 | char regp[MAX_REGISTER_SIZE]; |
6470 | int i; | |
6471 | ||
4082afcc | 6472 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
6473 | return 0; |
6474 | ||
6475 | if (reg->pnum == -1) | |
6476 | return 0; | |
6477 | ||
2e9f7625 | 6478 | p = rs->buf; |
fcad0fa4 | 6479 | *p++ = 'p'; |
74ca34ce | 6480 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6481 | *p++ = '\0'; |
1f4437a4 MS |
6482 | putpkt (rs->buf); |
6483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6484 | |
2e9f7625 DJ |
6485 | buf = rs->buf; |
6486 | ||
74ca34ce DJ |
6487 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6488 | { | |
6489 | case PACKET_OK: | |
6490 | break; | |
6491 | case PACKET_UNKNOWN: | |
6492 | return 0; | |
6493 | case PACKET_ERROR: | |
27a9c0bf MS |
6494 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6495 | gdbarch_register_name (get_regcache_arch (regcache), | |
6496 | reg->regnum), | |
6497 | buf); | |
74ca34ce | 6498 | } |
3f9a994c JB |
6499 | |
6500 | /* If this register is unfetchable, tell the regcache. */ | |
6501 | if (buf[0] == 'x') | |
8480adf2 | 6502 | { |
56be3814 | 6503 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6504 | return 1; |
b96ec7ac | 6505 | } |
b96ec7ac | 6506 | |
3f9a994c JB |
6507 | /* Otherwise, parse and supply the value. */ |
6508 | p = buf; | |
6509 | i = 0; | |
6510 | while (p[0] != 0) | |
6511 | { | |
6512 | if (p[1] == 0) | |
74ca34ce | 6513 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6514 | |
6515 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6516 | p += 2; | |
6517 | } | |
56be3814 | 6518 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6519 | return 1; |
b96ec7ac AC |
6520 | } |
6521 | ||
74ca34ce DJ |
6522 | /* Fetch the registers included in the target's 'g' packet. */ |
6523 | ||
29709017 DJ |
6524 | static int |
6525 | send_g_packet (void) | |
c906108c | 6526 | { |
d01949b6 | 6527 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6528 | int buf_len; |
c906108c | 6529 | |
bba74b36 | 6530 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6531 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6532 | |
29709017 DJ |
6533 | /* We can get out of synch in various cases. If the first character |
6534 | in the buffer is not a hex character, assume that has happened | |
6535 | and try to fetch another packet to read. */ | |
6536 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6537 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6538 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6539 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6540 | { | |
6541 | if (remote_debug) | |
6542 | fprintf_unfiltered (gdb_stdlog, | |
6543 | "Bad register packet; fetching a new packet\n"); | |
6544 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6545 | } | |
6546 | ||
74ca34ce DJ |
6547 | buf_len = strlen (rs->buf); |
6548 | ||
6549 | /* Sanity check the received packet. */ | |
6550 | if (buf_len % 2 != 0) | |
6551 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6552 | |
6553 | return buf_len / 2; | |
6554 | } | |
6555 | ||
6556 | static void | |
56be3814 | 6557 | process_g_packet (struct regcache *regcache) |
29709017 | 6558 | { |
4a22f64d | 6559 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6560 | struct remote_state *rs = get_remote_state (); |
6561 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6562 | int i, buf_len; | |
6563 | char *p; | |
6564 | char *regs; | |
6565 | ||
6566 | buf_len = strlen (rs->buf); | |
6567 | ||
6568 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6569 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6570 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6571 | ||
6572 | /* Save the size of the packet sent to us by the target. It is used | |
6573 | as a heuristic when determining the max size of packets that the | |
6574 | target can safely receive. */ | |
6575 | if (rsa->actual_register_packet_size == 0) | |
6576 | rsa->actual_register_packet_size = buf_len; | |
6577 | ||
6578 | /* If this is smaller than we guessed the 'g' packet would be, | |
6579 | update our records. A 'g' reply that doesn't include a register's | |
6580 | value implies either that the register is not available, or that | |
6581 | the 'p' packet must be used. */ | |
6582 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6583 | { |
74ca34ce DJ |
6584 | rsa->sizeof_g_packet = buf_len / 2; |
6585 | ||
4a22f64d | 6586 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6587 | { |
74ca34ce DJ |
6588 | if (rsa->regs[i].pnum == -1) |
6589 | continue; | |
6590 | ||
6591 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6592 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6593 | else |
74ca34ce | 6594 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6595 | } |
74ca34ce | 6596 | } |
b323314b | 6597 | |
74ca34ce | 6598 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6599 | |
6600 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6601 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6602 | |
c906108c SS |
6603 | /* Reply describes registers byte by byte, each byte encoded as two |
6604 | hex characters. Suck them all up, then supply them to the | |
6605 | register cacheing/storage mechanism. */ | |
6606 | ||
74ca34ce | 6607 | p = rs->buf; |
ea9c271d | 6608 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6609 | { |
74ca34ce DJ |
6610 | if (p[0] == 0 || p[1] == 0) |
6611 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6612 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6613 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6614 | |
c906108c | 6615 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6616 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6617 | else |
6618 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6619 | p += 2; | |
6620 | } | |
6621 | ||
a744cf53 MS |
6622 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6623 | { | |
6624 | struct packet_reg *r = &rsa->regs[i]; | |
6625 | ||
6626 | if (r->in_g_packet) | |
6627 | { | |
6628 | if (r->offset * 2 >= strlen (rs->buf)) | |
6629 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6630 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6631 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6632 | else if (rs->buf[r->offset * 2] == 'x') |
6633 | { | |
6634 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6635 | /* The register isn't available, mark it as such (at | |
6636 | the same time setting the value to zero). */ | |
6637 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6638 | } | |
6639 | else | |
6640 | regcache_raw_supply (regcache, r->regnum, | |
6641 | regs + r->offset); | |
6642 | } | |
6643 | } | |
c906108c SS |
6644 | } |
6645 | ||
29709017 | 6646 | static void |
56be3814 | 6647 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6648 | { |
6649 | send_g_packet (); | |
56be3814 | 6650 | process_g_packet (regcache); |
29709017 DJ |
6651 | } |
6652 | ||
e6e4e701 PA |
6653 | /* Make the remote selected traceframe match GDB's selected |
6654 | traceframe. */ | |
6655 | ||
6656 | static void | |
6657 | set_remote_traceframe (void) | |
6658 | { | |
6659 | int newnum; | |
262e1174 | 6660 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 6661 | |
262e1174 | 6662 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
6663 | return; |
6664 | ||
6665 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 6666 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
6667 | |
6668 | newnum = target_trace_find (tfind_number, | |
6669 | get_traceframe_number (), 0, 0, NULL); | |
6670 | ||
6671 | /* Should not happen. If it does, all bets are off. */ | |
6672 | if (newnum != get_traceframe_number ()) | |
6673 | warning (_("could not set remote traceframe")); | |
6674 | } | |
6675 | ||
74ca34ce | 6676 | static void |
28439f5e PA |
6677 | remote_fetch_registers (struct target_ops *ops, |
6678 | struct regcache *regcache, int regnum) | |
74ca34ce | 6679 | { |
74ca34ce DJ |
6680 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6681 | int i; | |
6682 | ||
e6e4e701 | 6683 | set_remote_traceframe (); |
79d7f229 | 6684 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6685 | |
6686 | if (regnum >= 0) | |
6687 | { | |
6688 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6689 | |
74ca34ce DJ |
6690 | gdb_assert (reg != NULL); |
6691 | ||
6692 | /* If this register might be in the 'g' packet, try that first - | |
6693 | we are likely to read more than one register. If this is the | |
6694 | first 'g' packet, we might be overly optimistic about its | |
6695 | contents, so fall back to 'p'. */ | |
6696 | if (reg->in_g_packet) | |
6697 | { | |
56be3814 | 6698 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6699 | if (reg->in_g_packet) |
6700 | return; | |
6701 | } | |
6702 | ||
56be3814 | 6703 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6704 | return; |
6705 | ||
6706 | /* This register is not available. */ | |
56be3814 | 6707 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6708 | |
6709 | return; | |
6710 | } | |
6711 | ||
56be3814 | 6712 | fetch_registers_using_g (regcache); |
74ca34ce | 6713 | |
4a22f64d | 6714 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6715 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6716 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6717 | { |
6718 | /* This register is not available. */ | |
56be3814 | 6719 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6720 | } |
6721 | } | |
6722 | ||
c906108c SS |
6723 | /* Prepare to store registers. Since we may send them all (using a |
6724 | 'G' request), we have to read out the ones we don't want to change | |
6725 | first. */ | |
6726 | ||
c5aa993b | 6727 | static void |
f32dbf8c | 6728 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 6729 | { |
ea9c271d | 6730 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6731 | int i; |
cfd77fa1 | 6732 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6733 | |
c906108c | 6734 | /* Make sure the entire registers array is valid. */ |
4082afcc | 6735 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
6736 | { |
6737 | case PACKET_DISABLE: | |
6738 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6739 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6740 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6741 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6742 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6743 | break; |
6744 | case PACKET_ENABLE: | |
6745 | break; | |
6746 | } | |
6747 | } | |
6748 | ||
ad10f812 | 6749 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6750 | packet was not recognized. */ |
5a2468f5 JM |
6751 | |
6752 | static int | |
1f4437a4 MS |
6753 | store_register_using_P (const struct regcache *regcache, |
6754 | struct packet_reg *reg) | |
5a2468f5 | 6755 | { |
4a22f64d | 6756 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6757 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6758 | /* Try storing a single register. */ |
6d820c5c | 6759 | char *buf = rs->buf; |
cfd77fa1 | 6760 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6761 | char *p; |
5a2468f5 | 6762 | |
4082afcc | 6763 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
6764 | return 0; |
6765 | ||
6766 | if (reg->pnum == -1) | |
6767 | return 0; | |
6768 | ||
ea9c271d | 6769 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6770 | p = buf + strlen (buf); |
56be3814 | 6771 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6772 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6773 | putpkt (rs->buf); |
6774 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6775 | |
74ca34ce DJ |
6776 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6777 | { | |
6778 | case PACKET_OK: | |
6779 | return 1; | |
6780 | case PACKET_ERROR: | |
27a9c0bf MS |
6781 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6782 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6783 | case PACKET_UNKNOWN: |
6784 | return 0; | |
6785 | default: | |
6786 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6787 | } | |
c906108c SS |
6788 | } |
6789 | ||
23860348 MS |
6790 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6791 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6792 | |
6793 | static void | |
56be3814 | 6794 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6795 | { |
d01949b6 | 6796 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6797 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6798 | gdb_byte *regs; |
c906108c SS |
6799 | char *p; |
6800 | ||
193cb69f AC |
6801 | /* Extract all the registers in the regcache copying them into a |
6802 | local buffer. */ | |
6803 | { | |
b323314b | 6804 | int i; |
a744cf53 | 6805 | |
ea9c271d DJ |
6806 | regs = alloca (rsa->sizeof_g_packet); |
6807 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6808 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6809 | { |
ea9c271d | 6810 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6811 | |
b323314b | 6812 | if (r->in_g_packet) |
56be3814 | 6813 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6814 | } |
6815 | } | |
c906108c SS |
6816 | |
6817 | /* Command describes registers byte by byte, | |
6818 | each byte encoded as two hex characters. */ | |
6d820c5c | 6819 | p = rs->buf; |
193cb69f | 6820 | *p++ = 'G'; |
74ca34ce DJ |
6821 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6822 | updated. */ | |
6823 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6824 | putpkt (rs->buf); |
6825 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6826 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6827 | error (_("Could not write registers; remote failure reply '%s'"), |
6828 | rs->buf); | |
c906108c | 6829 | } |
74ca34ce DJ |
6830 | |
6831 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6832 | of the register cache buffer. FIXME: ignores errors. */ | |
6833 | ||
6834 | static void | |
28439f5e PA |
6835 | remote_store_registers (struct target_ops *ops, |
6836 | struct regcache *regcache, int regnum) | |
74ca34ce | 6837 | { |
74ca34ce DJ |
6838 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6839 | int i; | |
6840 | ||
e6e4e701 | 6841 | set_remote_traceframe (); |
79d7f229 | 6842 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6843 | |
6844 | if (regnum >= 0) | |
6845 | { | |
6846 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6847 | |
74ca34ce DJ |
6848 | gdb_assert (reg != NULL); |
6849 | ||
6850 | /* Always prefer to store registers using the 'P' packet if | |
6851 | possible; we often change only a small number of registers. | |
6852 | Sometimes we change a larger number; we'd need help from a | |
6853 | higher layer to know to use 'G'. */ | |
56be3814 | 6854 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6855 | return; |
6856 | ||
6857 | /* For now, don't complain if we have no way to write the | |
6858 | register. GDB loses track of unavailable registers too | |
6859 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6860 | any way to read the register, either... */ |
74ca34ce DJ |
6861 | if (!reg->in_g_packet) |
6862 | return; | |
6863 | ||
56be3814 | 6864 | store_registers_using_G (regcache); |
74ca34ce DJ |
6865 | return; |
6866 | } | |
6867 | ||
56be3814 | 6868 | store_registers_using_G (regcache); |
74ca34ce | 6869 | |
4a22f64d | 6870 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6871 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6872 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6873 | /* See above for why we do not issue an error here. */ |
6874 | continue; | |
6875 | } | |
c906108c SS |
6876 | \f |
6877 | ||
6878 | /* Return the number of hex digits in num. */ | |
6879 | ||
6880 | static int | |
fba45db2 | 6881 | hexnumlen (ULONGEST num) |
c906108c SS |
6882 | { |
6883 | int i; | |
6884 | ||
6885 | for (i = 0; num != 0; i++) | |
6886 | num >>= 4; | |
6887 | ||
6888 | return max (i, 1); | |
6889 | } | |
6890 | ||
2df3850c | 6891 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6892 | |
6893 | static int | |
fba45db2 | 6894 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6895 | { |
c906108c | 6896 | int len = hexnumlen (num); |
a744cf53 | 6897 | |
2df3850c JM |
6898 | return hexnumnstr (buf, num, len); |
6899 | } | |
6900 | ||
c906108c | 6901 | |
2df3850c | 6902 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6903 | |
2df3850c | 6904 | static int |
fba45db2 | 6905 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6906 | { |
6907 | int i; | |
6908 | ||
6909 | buf[width] = '\0'; | |
6910 | ||
6911 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6912 | { |
c5aa993b | 6913 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6914 | num >>= 4; |
6915 | } | |
6916 | ||
2df3850c | 6917 | return width; |
c906108c SS |
6918 | } |
6919 | ||
23860348 | 6920 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6921 | |
6922 | static CORE_ADDR | |
fba45db2 | 6923 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6924 | { |
883b9c6c | 6925 | unsigned int address_size = remote_address_size; |
a744cf53 | 6926 | |
911c95a5 UW |
6927 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6928 | if (!address_size) | |
f5656ead | 6929 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6930 | |
6931 | if (address_size > 0 | |
6932 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6933 | { |
6934 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6935 | in a ULONGEST variable. */ |
c906108c | 6936 | ULONGEST mask = 1; |
a744cf53 | 6937 | |
911c95a5 | 6938 | mask = (mask << address_size) - 1; |
c906108c SS |
6939 | addr &= mask; |
6940 | } | |
6941 | return addr; | |
6942 | } | |
6943 | ||
6944 | /* Determine whether the remote target supports binary downloading. | |
6945 | This is accomplished by sending a no-op memory write of zero length | |
6946 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6947 | the whole packet, since many stubs strip the eighth bit and |
6948 | subsequently compute a wrong checksum, which causes real havoc with | |
6949 | remote_write_bytes. | |
7a292a7a | 6950 | |
96baa820 | 6951 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6952 | clean. In cases like this, the user should clear "remote |
23860348 | 6953 | X-packet". */ |
96baa820 | 6954 | |
c906108c | 6955 | static void |
fba45db2 | 6956 | check_binary_download (CORE_ADDR addr) |
c906108c | 6957 | { |
d01949b6 | 6958 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6959 | |
4082afcc | 6960 | switch (packet_support (PACKET_X)) |
c906108c | 6961 | { |
96baa820 JM |
6962 | case PACKET_DISABLE: |
6963 | break; | |
6964 | case PACKET_ENABLE: | |
6965 | break; | |
6966 | case PACKET_SUPPORT_UNKNOWN: | |
6967 | { | |
96baa820 | 6968 | char *p; |
802188a7 | 6969 | |
2e9f7625 | 6970 | p = rs->buf; |
96baa820 JM |
6971 | *p++ = 'X'; |
6972 | p += hexnumstr (p, (ULONGEST) addr); | |
6973 | *p++ = ','; | |
6974 | p += hexnumstr (p, (ULONGEST) 0); | |
6975 | *p++ = ':'; | |
6976 | *p = '\0'; | |
802188a7 | 6977 | |
2e9f7625 | 6978 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6979 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6980 | |
2e9f7625 | 6981 | if (rs->buf[0] == '\0') |
96baa820 JM |
6982 | { |
6983 | if (remote_debug) | |
6984 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6985 | "binary downloading NOT " |
6986 | "supported by target\n"); | |
444abaca | 6987 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6988 | } |
6989 | else | |
6990 | { | |
6991 | if (remote_debug) | |
6992 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6993 | "binary downloading supported by target\n"); |
444abaca | 6994 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6995 | } |
6996 | break; | |
6997 | } | |
c906108c SS |
6998 | } |
6999 | } | |
7000 | ||
124e13d9 SM |
7001 | /* Helper function to resize the payload in order to try to get a good |
7002 | alignment. We try to write an amount of data such that the next write will | |
7003 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7004 | ||
7005 | static int | |
7006 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7007 | { | |
7008 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7009 | } | |
7010 | ||
c906108c SS |
7011 | /* Write memory data directly to the remote machine. |
7012 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 7013 | HEADER is the starting part of the packet. |
c906108c SS |
7014 | MEMADDR is the address in the remote memory space. |
7015 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7016 | LEN_UNITS is the number of addressable units to write. |
7017 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
7018 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7019 | should send data as binary ('X'), or hex-encoded ('M'). | |
7020 | ||
7021 | The function creates packet of the form | |
7022 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7023 | ||
124e13d9 | 7024 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
7025 | |
7026 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7027 | are omitted. | |
7028 | ||
9b409511 | 7029 | Return the transferred status, error or OK (an |
124e13d9 SM |
7030 | 'enum target_xfer_status' value). Save the number of addressable units |
7031 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
7032 | ||
7033 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
7034 | exchange between gdb and the stub could look like (?? in place of the | |
7035 | checksum): | |
7036 | ||
7037 | -> $m1000,4#?? | |
7038 | <- aaaabbbbccccdddd | |
7039 | ||
7040 | -> $M1000,3:eeeeffffeeee#?? | |
7041 | <- OK | |
7042 | ||
7043 | -> $m1000,4#?? | |
7044 | <- eeeeffffeeeedddd */ | |
c906108c | 7045 | |
9b409511 | 7046 | static enum target_xfer_status |
a76d924d | 7047 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
124e13d9 SM |
7048 | const gdb_byte *myaddr, ULONGEST len_units, |
7049 | int unit_size, ULONGEST *xfered_len_units, | |
7050 | char packet_format, int use_length) | |
c906108c | 7051 | { |
6d820c5c | 7052 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 7053 | char *p; |
a76d924d DJ |
7054 | char *plen = NULL; |
7055 | int plenlen = 0; | |
124e13d9 SM |
7056 | int todo_units; |
7057 | int units_written; | |
7058 | int payload_capacity_bytes; | |
7059 | int payload_length_bytes; | |
a76d924d DJ |
7060 | |
7061 | if (packet_format != 'X' && packet_format != 'M') | |
7062 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 7063 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 7064 | |
124e13d9 | 7065 | if (len_units == 0) |
9b409511 | 7066 | return TARGET_XFER_EOF; |
b2182ed2 | 7067 | |
124e13d9 | 7068 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 7069 | |
6d820c5c DJ |
7070 | /* The packet buffer will be large enough for the payload; |
7071 | get_memory_packet_size ensures this. */ | |
a76d924d | 7072 | rs->buf[0] = '\0'; |
c906108c | 7073 | |
a257b5bb | 7074 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
7075 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7076 | ||
124e13d9 | 7077 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 7078 | if (!use_length) |
0df8b418 | 7079 | /* The comma won't be used. */ |
124e13d9 SM |
7080 | payload_capacity_bytes += 1; |
7081 | payload_capacity_bytes -= strlen (header); | |
7082 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 7083 | |
a76d924d | 7084 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 7085 | |
a76d924d DJ |
7086 | strcat (rs->buf, header); |
7087 | p = rs->buf + strlen (header); | |
7088 | ||
7089 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7090 | if (packet_format == 'X') | |
c906108c | 7091 | { |
23860348 | 7092 | /* Best guess at number of bytes that will fit. */ |
124e13d9 | 7093 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
a76d924d | 7094 | if (use_length) |
124e13d9 SM |
7095 | payload_capacity_bytes -= hexnumlen (todo_units); |
7096 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
a76d924d DJ |
7097 | } |
7098 | else | |
7099 | { | |
124e13d9 SM |
7100 | /* Number of bytes that will fit. */ |
7101 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 7102 | if (use_length) |
124e13d9 SM |
7103 | payload_capacity_bytes -= hexnumlen (todo_units); |
7104 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 7105 | } |
a76d924d | 7106 | |
124e13d9 | 7107 | if (todo_units <= 0) |
3de11b2e | 7108 | internal_error (__FILE__, __LINE__, |
405f8e94 | 7109 | _("minimum packet size too small to write data")); |
802188a7 | 7110 | |
6765f3e5 DJ |
7111 | /* If we already need another packet, then try to align the end |
7112 | of this packet to a useful boundary. */ | |
124e13d9 SM |
7113 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7114 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 7115 | |
a257b5bb | 7116 | /* Append "<memaddr>". */ |
917317f4 JM |
7117 | memaddr = remote_address_masked (memaddr); |
7118 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 7119 | |
a76d924d DJ |
7120 | if (use_length) |
7121 | { | |
7122 | /* Append ",". */ | |
7123 | *p++ = ','; | |
802188a7 | 7124 | |
124e13d9 SM |
7125 | /* Append the length and retain its location and size. It may need to be |
7126 | adjusted once the packet body has been created. */ | |
a76d924d | 7127 | plen = p; |
124e13d9 | 7128 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
7129 | p += plenlen; |
7130 | } | |
a257b5bb AC |
7131 | |
7132 | /* Append ":". */ | |
917317f4 JM |
7133 | *p++ = ':'; |
7134 | *p = '\0'; | |
802188a7 | 7135 | |
a257b5bb | 7136 | /* Append the packet body. */ |
a76d924d | 7137 | if (packet_format == 'X') |
917317f4 | 7138 | { |
917317f4 JM |
7139 | /* Binary mode. Send target system values byte by byte, in |
7140 | increasing byte addresses. Only escape certain critical | |
7141 | characters. */ | |
124e13d9 SM |
7142 | payload_length_bytes = |
7143 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7144 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 7145 | |
124e13d9 | 7146 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
7147 | a second try to keep the end of the packet aligned. Don't do |
7148 | this if the packet is tiny. */ | |
124e13d9 | 7149 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 7150 | { |
124e13d9 SM |
7151 | int new_todo_units; |
7152 | ||
7153 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7154 | ||
7155 | if (new_todo_units != units_written) | |
7156 | payload_length_bytes = | |
7157 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7158 | (gdb_byte *) p, &units_written, | |
7159 | payload_capacity_bytes); | |
6765f3e5 DJ |
7160 | } |
7161 | ||
124e13d9 SM |
7162 | p += payload_length_bytes; |
7163 | if (use_length && units_written < todo_units) | |
c906108c | 7164 | { |
802188a7 | 7165 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 7166 | and we have actually sent fewer units than planned. |
917317f4 JM |
7167 | Fix-up the length field of the packet. Use the same |
7168 | number of characters as before. */ | |
124e13d9 SM |
7169 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7170 | plenlen); | |
917317f4 | 7171 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 7172 | } |
a76d924d DJ |
7173 | } |
7174 | else | |
7175 | { | |
917317f4 JM |
7176 | /* Normal mode: Send target system values byte by byte, in |
7177 | increasing byte addresses. Each byte is encoded as a two hex | |
7178 | value. */ | |
124e13d9 SM |
7179 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7180 | units_written = todo_units; | |
c906108c | 7181 | } |
802188a7 | 7182 | |
2e9f7625 | 7183 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 7184 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 7185 | |
2e9f7625 | 7186 | if (rs->buf[0] == 'E') |
00d84524 | 7187 | return TARGET_XFER_E_IO; |
802188a7 | 7188 | |
124e13d9 SM |
7189 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7190 | send fewer units than we'd planned. */ | |
7191 | *xfered_len_units = (ULONGEST) units_written; | |
9b409511 | 7192 | return TARGET_XFER_OK; |
c906108c SS |
7193 | } |
7194 | ||
a76d924d DJ |
7195 | /* Write memory data directly to the remote machine. |
7196 | This does not inform the data cache; the data cache uses this. | |
7197 | MEMADDR is the address in the remote memory space. | |
7198 | MYADDR is the address of the buffer in our space. | |
7199 | LEN is the number of bytes. | |
7200 | ||
9b409511 YQ |
7201 | Return the transferred status, error or OK (an |
7202 | 'enum target_xfer_status' value). Save the number of bytes | |
7203 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 7204 | |
9b409511 YQ |
7205 | static enum target_xfer_status |
7206 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
124e13d9 | 7207 | int unit_size, ULONGEST *xfered_len) |
a76d924d DJ |
7208 | { |
7209 | char *packet_format = 0; | |
7210 | ||
7211 | /* Check whether the target supports binary download. */ | |
7212 | check_binary_download (memaddr); | |
7213 | ||
4082afcc | 7214 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
7215 | { |
7216 | case PACKET_ENABLE: | |
7217 | packet_format = "X"; | |
7218 | break; | |
7219 | case PACKET_DISABLE: | |
7220 | packet_format = "M"; | |
7221 | break; | |
7222 | case PACKET_SUPPORT_UNKNOWN: | |
7223 | internal_error (__FILE__, __LINE__, | |
7224 | _("remote_write_bytes: bad internal state")); | |
7225 | default: | |
7226 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7227 | } | |
7228 | ||
7229 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 7230 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 7231 | packet_format[0], 1); |
a76d924d DJ |
7232 | } |
7233 | ||
9217e74e YQ |
7234 | /* Read memory data directly from the remote machine. |
7235 | This does not use the data cache; the data cache uses this. | |
7236 | MEMADDR is the address in the remote memory space. | |
7237 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
7238 | LEN_UNITS is the number of addressable memory units to read.. |
7239 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
7240 | |
7241 | Return the transferred status, error or OK (an | |
7242 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
7243 | transferred in *XFERED_LEN_UNITS. |
7244 | ||
7245 | See the comment of remote_write_bytes_aux for an example of | |
7246 | memory read/write exchange between gdb and the stub. */ | |
9217e74e YQ |
7247 | |
7248 | static enum target_xfer_status | |
124e13d9 SM |
7249 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, |
7250 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
7251 | { |
7252 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 7253 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 7254 | char *p; |
124e13d9 SM |
7255 | int todo_units; |
7256 | int decoded_bytes; | |
9217e74e | 7257 | |
124e13d9 | 7258 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
7259 | /* The packet buffer will be large enough for the payload; |
7260 | get_memory_packet_size ensures this. */ | |
7261 | ||
124e13d9 SM |
7262 | /* Number of units that will fit. */ |
7263 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
7264 | |
7265 | /* Construct "m"<memaddr>","<len>". */ | |
7266 | memaddr = remote_address_masked (memaddr); | |
7267 | p = rs->buf; | |
7268 | *p++ = 'm'; | |
7269 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7270 | *p++ = ','; | |
124e13d9 | 7271 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
7272 | *p = '\0'; |
7273 | putpkt (rs->buf); | |
7274 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7275 | if (rs->buf[0] == 'E' | |
7276 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7277 | && rs->buf[3] == '\0') | |
7278 | return TARGET_XFER_E_IO; | |
7279 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
7280 | characters. */ | |
7281 | p = rs->buf; | |
124e13d9 | 7282 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 7283 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 7284 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
9217e74e YQ |
7285 | return TARGET_XFER_OK; |
7286 | } | |
7287 | ||
b55fbac4 YQ |
7288 | /* Using the set of read-only target sections of remote, read live |
7289 | read-only memory. | |
8acf9577 YQ |
7290 | |
7291 | For interface/parameters/return description see target.h, | |
7292 | to_xfer_partial. */ | |
7293 | ||
7294 | static enum target_xfer_status | |
b55fbac4 YQ |
7295 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, |
7296 | ULONGEST memaddr, ULONGEST len, | |
124e13d9 | 7297 | int unit_size, ULONGEST *xfered_len) |
8acf9577 YQ |
7298 | { |
7299 | struct target_section *secp; | |
7300 | struct target_section_table *table; | |
7301 | ||
7302 | secp = target_section_by_addr (ops, memaddr); | |
7303 | if (secp != NULL | |
7304 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7305 | secp->the_bfd_section) | |
7306 | & SEC_READONLY)) | |
7307 | { | |
7308 | struct target_section *p; | |
7309 | ULONGEST memend = memaddr + len; | |
7310 | ||
7311 | table = target_get_section_table (ops); | |
7312 | ||
7313 | for (p = table->sections; p < table->sections_end; p++) | |
7314 | { | |
7315 | if (memaddr >= p->addr) | |
7316 | { | |
7317 | if (memend <= p->endaddr) | |
7318 | { | |
7319 | /* Entire transfer is within this section. */ | |
124e13d9 | 7320 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7321 | xfered_len); |
8acf9577 YQ |
7322 | } |
7323 | else if (memaddr >= p->endaddr) | |
7324 | { | |
7325 | /* This section ends before the transfer starts. */ | |
7326 | continue; | |
7327 | } | |
7328 | else | |
7329 | { | |
7330 | /* This section overlaps the transfer. Just do half. */ | |
7331 | len = p->endaddr - memaddr; | |
124e13d9 | 7332 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 7333 | xfered_len); |
8acf9577 YQ |
7334 | } |
7335 | } | |
7336 | } | |
7337 | } | |
7338 | ||
7339 | return TARGET_XFER_EOF; | |
7340 | } | |
7341 | ||
9217e74e YQ |
7342 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
7343 | first if the requested memory is unavailable in traceframe. | |
7344 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 7345 | |
9b409511 | 7346 | static enum target_xfer_status |
8acf9577 | 7347 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, |
124e13d9 SM |
7348 | gdb_byte *myaddr, ULONGEST len, int unit_size, |
7349 | ULONGEST *xfered_len) | |
c906108c | 7350 | { |
6b6aa828 | 7351 | if (len == 0) |
96c4f946 | 7352 | return TARGET_XFER_EOF; |
b2182ed2 | 7353 | |
8acf9577 YQ |
7354 | if (get_traceframe_number () != -1) |
7355 | { | |
7356 | VEC(mem_range_s) *available; | |
7357 | ||
7358 | /* If we fail to get the set of available memory, then the | |
7359 | target does not support querying traceframe info, and so we | |
7360 | attempt reading from the traceframe anyway (assuming the | |
7361 | target implements the old QTro packet then). */ | |
7362 | if (traceframe_available_memory (&available, memaddr, len)) | |
7363 | { | |
7364 | struct cleanup *old_chain; | |
7365 | ||
7366 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7367 | ||
7368 | if (VEC_empty (mem_range_s, available) | |
7369 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7370 | { | |
7371 | enum target_xfer_status res; | |
7372 | ||
7373 | /* Don't read into the traceframe's available | |
7374 | memory. */ | |
7375 | if (!VEC_empty (mem_range_s, available)) | |
7376 | { | |
7377 | LONGEST oldlen = len; | |
7378 | ||
7379 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7380 | gdb_assert (len <= oldlen); | |
7381 | } | |
7382 | ||
7383 | do_cleanups (old_chain); | |
7384 | ||
7385 | /* This goes through the topmost target again. */ | |
b55fbac4 | 7386 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, |
124e13d9 | 7387 | len, unit_size, xfered_len); |
8acf9577 YQ |
7388 | if (res == TARGET_XFER_OK) |
7389 | return TARGET_XFER_OK; | |
7390 | else | |
7391 | { | |
7392 | /* No use trying further, we know some memory starting | |
7393 | at MEMADDR isn't available. */ | |
7394 | *xfered_len = len; | |
7395 | return TARGET_XFER_UNAVAILABLE; | |
7396 | } | |
7397 | } | |
7398 | ||
7399 | /* Don't try to read more than how much is available, in | |
7400 | case the target implements the deprecated QTro packet to | |
7401 | cater for older GDBs (the target's knowledge of read-only | |
7402 | sections may be outdated by now). */ | |
7403 | len = VEC_index (mem_range_s, available, 0)->length; | |
7404 | ||
7405 | do_cleanups (old_chain); | |
7406 | } | |
7407 | } | |
7408 | ||
124e13d9 | 7409 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 7410 | } |
74531fed | 7411 | |
c906108c | 7412 | \f |
c906108c | 7413 | |
a76d924d DJ |
7414 | /* Sends a packet with content determined by the printf format string |
7415 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7416 | whether the packet was a success, a failure, or unknown. */ | |
7417 | ||
77b64a49 PA |
7418 | static enum packet_result remote_send_printf (const char *format, ...) |
7419 | ATTRIBUTE_PRINTF (1, 2); | |
7420 | ||
2c0b251b | 7421 | static enum packet_result |
a76d924d DJ |
7422 | remote_send_printf (const char *format, ...) |
7423 | { | |
7424 | struct remote_state *rs = get_remote_state (); | |
7425 | int max_size = get_remote_packet_size (); | |
a76d924d | 7426 | va_list ap; |
a744cf53 | 7427 | |
a76d924d DJ |
7428 | va_start (ap, format); |
7429 | ||
7430 | rs->buf[0] = '\0'; | |
7431 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 7432 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
7433 | |
7434 | if (putpkt (rs->buf) < 0) | |
7435 | error (_("Communication problem with target.")); | |
7436 | ||
7437 | rs->buf[0] = '\0'; | |
7438 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7439 | ||
7440 | return packet_check_result (rs->buf); | |
7441 | } | |
7442 | ||
7443 | static void | |
7444 | restore_remote_timeout (void *p) | |
7445 | { | |
7446 | int value = *(int *)p; | |
a744cf53 | 7447 | |
a76d924d DJ |
7448 | remote_timeout = value; |
7449 | } | |
7450 | ||
7451 | /* Flash writing can take quite some time. We'll set | |
7452 | effectively infinite timeout for flash operations. | |
7453 | In future, we'll need to decide on a better approach. */ | |
7454 | static const int remote_flash_timeout = 1000; | |
7455 | ||
7456 | static void | |
7457 | remote_flash_erase (struct target_ops *ops, | |
7458 | ULONGEST address, LONGEST length) | |
7459 | { | |
f5656ead | 7460 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
7461 | int saved_remote_timeout = remote_timeout; |
7462 | enum packet_result ret; | |
a76d924d DJ |
7463 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7464 | &saved_remote_timeout); | |
a744cf53 | 7465 | |
a76d924d DJ |
7466 | remote_timeout = remote_flash_timeout; |
7467 | ||
7468 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 7469 | phex (address, addr_size), |
a76d924d DJ |
7470 | phex (length, 4)); |
7471 | switch (ret) | |
7472 | { | |
7473 | case PACKET_UNKNOWN: | |
7474 | error (_("Remote target does not support flash erase")); | |
7475 | case PACKET_ERROR: | |
7476 | error (_("Error erasing flash with vFlashErase packet")); | |
7477 | default: | |
7478 | break; | |
7479 | } | |
7480 | ||
7481 | do_cleanups (back_to); | |
7482 | } | |
7483 | ||
9b409511 YQ |
7484 | static enum target_xfer_status |
7485 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7486 | ULONGEST length, ULONGEST *xfered_len, | |
7487 | const gdb_byte *data) | |
a76d924d DJ |
7488 | { |
7489 | int saved_remote_timeout = remote_timeout; | |
9b409511 | 7490 | enum target_xfer_status ret; |
a76d924d | 7491 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
9b409511 | 7492 | &saved_remote_timeout); |
a76d924d DJ |
7493 | |
7494 | remote_timeout = remote_flash_timeout; | |
124e13d9 | 7495 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
9b409511 | 7496 | xfered_len,'X', 0); |
a76d924d DJ |
7497 | do_cleanups (back_to); |
7498 | ||
7499 | return ret; | |
7500 | } | |
7501 | ||
7502 | static void | |
7503 | remote_flash_done (struct target_ops *ops) | |
7504 | { | |
7505 | int saved_remote_timeout = remote_timeout; | |
7506 | int ret; | |
7507 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7508 | &saved_remote_timeout); | |
7509 | ||
7510 | remote_timeout = remote_flash_timeout; | |
7511 | ret = remote_send_printf ("vFlashDone"); | |
7512 | do_cleanups (back_to); | |
7513 | ||
7514 | switch (ret) | |
7515 | { | |
7516 | case PACKET_UNKNOWN: | |
7517 | error (_("Remote target does not support vFlashDone")); | |
7518 | case PACKET_ERROR: | |
7519 | error (_("Error finishing flash operation")); | |
7520 | default: | |
7521 | break; | |
7522 | } | |
7523 | } | |
7524 | ||
c906108c | 7525 | static void |
fba45db2 | 7526 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7527 | { |
7528 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7529 | } | |
7530 | \f | |
7531 | /* Stuff for dealing with the packets which are part of this protocol. | |
7532 | See comment at top of file for details. */ | |
7533 | ||
1927e618 PA |
7534 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7535 | error to higher layers. Called when a serial error is detected. | |
7536 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
7537 | the system error message for errno at function entry and final dot |
7538 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
7539 | |
7540 | static void | |
7541 | unpush_and_perror (const char *string) | |
7542 | { | |
d6cb50a2 | 7543 | int saved_errno = errno; |
1927e618 PA |
7544 | |
7545 | remote_unpush_target (); | |
d6cb50a2 JK |
7546 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
7547 | safe_strerror (saved_errno)); | |
1927e618 PA |
7548 | } |
7549 | ||
0876f84a | 7550 | /* Read a single character from the remote end. */ |
c906108c SS |
7551 | |
7552 | static int | |
fba45db2 | 7553 | readchar (int timeout) |
c906108c SS |
7554 | { |
7555 | int ch; | |
5d93a237 | 7556 | struct remote_state *rs = get_remote_state (); |
c906108c | 7557 | |
5d93a237 | 7558 | ch = serial_readchar (rs->remote_desc, timeout); |
c906108c | 7559 | |
2acceee2 | 7560 | if (ch >= 0) |
0876f84a | 7561 | return ch; |
2acceee2 JM |
7562 | |
7563 | switch ((enum serial_rc) ch) | |
c906108c SS |
7564 | { |
7565 | case SERIAL_EOF: | |
78a095c3 | 7566 | remote_unpush_target (); |
598d3636 | 7567 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 7568 | /* no return */ |
c906108c | 7569 | case SERIAL_ERROR: |
1927e618 PA |
7570 | unpush_and_perror (_("Remote communication error. " |
7571 | "Target disconnected.")); | |
2acceee2 | 7572 | /* no return */ |
c906108c | 7573 | case SERIAL_TIMEOUT: |
2acceee2 | 7574 | break; |
c906108c | 7575 | } |
2acceee2 | 7576 | return ch; |
c906108c SS |
7577 | } |
7578 | ||
c33e31fd PA |
7579 | /* Wrapper for serial_write that closes the target and throws if |
7580 | writing fails. */ | |
7581 | ||
7582 | static void | |
7583 | remote_serial_write (const char *str, int len) | |
7584 | { | |
5d93a237 TT |
7585 | struct remote_state *rs = get_remote_state (); |
7586 | ||
7587 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 7588 | { |
1927e618 PA |
7589 | unpush_and_perror (_("Remote communication error. " |
7590 | "Target disconnected.")); | |
c33e31fd PA |
7591 | } |
7592 | } | |
7593 | ||
6d820c5c DJ |
7594 | /* Send the command in *BUF to the remote machine, and read the reply |
7595 | into *BUF. Report an error if we get an error reply. Resize | |
7596 | *BUF using xrealloc if necessary to hold the result, and update | |
7597 | *SIZEOF_BUF. */ | |
c906108c SS |
7598 | |
7599 | static void | |
6d820c5c DJ |
7600 | remote_send (char **buf, |
7601 | long *sizeof_buf) | |
c906108c | 7602 | { |
6d820c5c | 7603 | putpkt (*buf); |
c2d11a7d | 7604 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7605 | |
6d820c5c DJ |
7606 | if ((*buf)[0] == 'E') |
7607 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7608 | } |
7609 | ||
6e5abd65 PA |
7610 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7611 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7612 | etc. The caller is responsible for releasing the returned | |
7613 | memory. */ | |
7614 | ||
7615 | static char * | |
7616 | escape_buffer (const char *buf, int n) | |
7617 | { | |
7618 | struct cleanup *old_chain; | |
7619 | struct ui_file *stb; | |
7620 | char *str; | |
6e5abd65 PA |
7621 | |
7622 | stb = mem_fileopen (); | |
7623 | old_chain = make_cleanup_ui_file_delete (stb); | |
7624 | ||
6ef284bd | 7625 | fputstrn_unfiltered (buf, n, '\\', stb); |
759ef836 | 7626 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7627 | do_cleanups (old_chain); |
7628 | return str; | |
7629 | } | |
7630 | ||
c906108c SS |
7631 | /* Display a null-terminated packet on stdout, for debugging, using C |
7632 | string notation. */ | |
7633 | ||
7634 | static void | |
baa336ce | 7635 | print_packet (const char *buf) |
c906108c SS |
7636 | { |
7637 | puts_filtered ("\""); | |
43e526b9 | 7638 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7639 | puts_filtered ("\""); |
7640 | } | |
7641 | ||
7642 | int | |
baa336ce | 7643 | putpkt (const char *buf) |
c906108c SS |
7644 | { |
7645 | return putpkt_binary (buf, strlen (buf)); | |
7646 | } | |
7647 | ||
7648 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7649 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7650 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7651 | and for a possible /0 if we are debugging (remote_debug) and want |
7652 | to print the sent packet as a string. */ | |
c906108c SS |
7653 | |
7654 | static int | |
baa336ce | 7655 | putpkt_binary (const char *buf, int cnt) |
c906108c | 7656 | { |
2d717e4f | 7657 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7658 | int i; |
7659 | unsigned char csum = 0; | |
11cf8741 | 7660 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7661 | |
c906108c SS |
7662 | int ch; |
7663 | int tcount = 0; | |
7664 | char *p; | |
dd61ec5c | 7665 | char *message; |
c906108c | 7666 | |
e24a49d8 PA |
7667 | /* Catch cases like trying to read memory or listing threads while |
7668 | we're waiting for a stop reply. The remote server wouldn't be | |
7669 | ready to handle this request, so we'd hang and timeout. We don't | |
7670 | have to worry about this in synchronous mode, because in that | |
7671 | case it's not possible to issue a command while the target is | |
74531fed PA |
7672 | running. This is not a problem in non-stop mode, because in that |
7673 | case, the stub is always ready to process serial input. */ | |
d9d41e78 | 7674 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
9597b22a DE |
7675 | { |
7676 | error (_("Cannot execute this command while the target is running.\n" | |
7677 | "Use the \"interrupt\" command to stop the target\n" | |
7678 | "and then try again.")); | |
7679 | } | |
e24a49d8 | 7680 | |
2d717e4f DJ |
7681 | /* We're sending out a new packet. Make sure we don't look at a |
7682 | stale cached response. */ | |
7683 | rs->cached_wait_status = 0; | |
7684 | ||
c906108c SS |
7685 | /* Copy the packet into buffer BUF2, encapsulating it |
7686 | and giving it a checksum. */ | |
7687 | ||
c906108c SS |
7688 | p = buf2; |
7689 | *p++ = '$'; | |
7690 | ||
7691 | for (i = 0; i < cnt; i++) | |
7692 | { | |
7693 | csum += buf[i]; | |
7694 | *p++ = buf[i]; | |
7695 | } | |
7696 | *p++ = '#'; | |
7697 | *p++ = tohex ((csum >> 4) & 0xf); | |
7698 | *p++ = tohex (csum & 0xf); | |
7699 | ||
7700 | /* Send it over and over until we get a positive ack. */ | |
7701 | ||
7702 | while (1) | |
7703 | { | |
7704 | int started_error_output = 0; | |
7705 | ||
7706 | if (remote_debug) | |
7707 | { | |
6e5abd65 PA |
7708 | struct cleanup *old_chain; |
7709 | char *str; | |
7710 | ||
c906108c | 7711 | *p = '\0'; |
6e5abd65 PA |
7712 | str = escape_buffer (buf2, p - buf2); |
7713 | old_chain = make_cleanup (xfree, str); | |
7714 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7715 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7716 | do_cleanups (old_chain); |
c906108c | 7717 | } |
c33e31fd | 7718 | remote_serial_write (buf2, p - buf2); |
c906108c | 7719 | |
a6f3e723 SL |
7720 | /* If this is a no acks version of the remote protocol, send the |
7721 | packet and move on. */ | |
7722 | if (rs->noack_mode) | |
7723 | break; | |
7724 | ||
74531fed PA |
7725 | /* Read until either a timeout occurs (-2) or '+' is read. |
7726 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7727 | while (1) |
7728 | { | |
7729 | ch = readchar (remote_timeout); | |
7730 | ||
c5aa993b | 7731 | if (remote_debug) |
c906108c SS |
7732 | { |
7733 | switch (ch) | |
7734 | { | |
7735 | case '+': | |
1216fa2c | 7736 | case '-': |
c906108c SS |
7737 | case SERIAL_TIMEOUT: |
7738 | case '$': | |
74531fed | 7739 | case '%': |
c906108c SS |
7740 | if (started_error_output) |
7741 | { | |
7742 | putchar_unfiltered ('\n'); | |
7743 | started_error_output = 0; | |
7744 | } | |
7745 | } | |
7746 | } | |
7747 | ||
7748 | switch (ch) | |
7749 | { | |
7750 | case '+': | |
7751 | if (remote_debug) | |
0f71a2f6 | 7752 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7753 | return 1; |
1216fa2c AC |
7754 | case '-': |
7755 | if (remote_debug) | |
7756 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7757 | /* FALLTHROUGH */ |
c906108c | 7758 | case SERIAL_TIMEOUT: |
c5aa993b | 7759 | tcount++; |
c906108c SS |
7760 | if (tcount > 3) |
7761 | return 0; | |
23860348 | 7762 | break; /* Retransmit buffer. */ |
c906108c SS |
7763 | case '$': |
7764 | { | |
40e3f985 | 7765 | if (remote_debug) |
2bc416ba | 7766 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7767 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7768 | /* It's probably an old response sent because an ACK |
7769 | was lost. Gobble up the packet and ack it so it | |
7770 | doesn't get retransmitted when we resend this | |
7771 | packet. */ | |
6d820c5c | 7772 | skip_frame (); |
c33e31fd | 7773 | remote_serial_write ("+", 1); |
23860348 | 7774 | continue; /* Now, go look for +. */ |
c906108c | 7775 | } |
74531fed PA |
7776 | |
7777 | case '%': | |
7778 | { | |
7779 | int val; | |
7780 | ||
7781 | /* If we got a notification, handle it, and go back to looking | |
7782 | for an ack. */ | |
7783 | /* We've found the start of a notification. Now | |
7784 | collect the data. */ | |
7785 | val = read_frame (&rs->buf, &rs->buf_size); | |
7786 | if (val >= 0) | |
7787 | { | |
7788 | if (remote_debug) | |
7789 | { | |
6e5abd65 PA |
7790 | struct cleanup *old_chain; |
7791 | char *str; | |
7792 | ||
7793 | str = escape_buffer (rs->buf, val); | |
7794 | old_chain = make_cleanup (xfree, str); | |
7795 | fprintf_unfiltered (gdb_stdlog, | |
7796 | " Notification received: %s\n", | |
7797 | str); | |
7798 | do_cleanups (old_chain); | |
74531fed | 7799 | } |
5965e028 | 7800 | handle_notification (rs->notif_state, rs->buf); |
74531fed PA |
7801 | /* We're in sync now, rewait for the ack. */ |
7802 | tcount = 0; | |
7803 | } | |
7804 | else | |
7805 | { | |
7806 | if (remote_debug) | |
7807 | { | |
7808 | if (!started_error_output) | |
7809 | { | |
7810 | started_error_output = 1; | |
7811 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7812 | } | |
7813 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7814 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7815 | } | |
7816 | } | |
7817 | continue; | |
7818 | } | |
7819 | /* fall-through */ | |
c906108c SS |
7820 | default: |
7821 | if (remote_debug) | |
7822 | { | |
7823 | if (!started_error_output) | |
7824 | { | |
7825 | started_error_output = 1; | |
0f71a2f6 | 7826 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7827 | } |
0f71a2f6 | 7828 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7829 | } |
7830 | continue; | |
7831 | } | |
23860348 | 7832 | break; /* Here to retransmit. */ |
c906108c SS |
7833 | } |
7834 | ||
7835 | #if 0 | |
7836 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7837 | able to get out next time we call QUIT, without anything as |
7838 | violent as interrupt_query. If we want to provide a way out of | |
7839 | here without getting to the next QUIT, it should be based on | |
7840 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7841 | if (quit_flag) |
7842 | { | |
7843 | quit_flag = 0; | |
7844 | interrupt_query (); | |
7845 | } | |
7846 | #endif | |
7847 | } | |
a6f3e723 | 7848 | return 0; |
c906108c SS |
7849 | } |
7850 | ||
6d820c5c DJ |
7851 | /* Come here after finding the start of a frame when we expected an |
7852 | ack. Do our best to discard the rest of this packet. */ | |
7853 | ||
7854 | static void | |
7855 | skip_frame (void) | |
7856 | { | |
7857 | int c; | |
7858 | ||
7859 | while (1) | |
7860 | { | |
7861 | c = readchar (remote_timeout); | |
7862 | switch (c) | |
7863 | { | |
7864 | case SERIAL_TIMEOUT: | |
7865 | /* Nothing we can do. */ | |
7866 | return; | |
7867 | case '#': | |
7868 | /* Discard the two bytes of checksum and stop. */ | |
7869 | c = readchar (remote_timeout); | |
7870 | if (c >= 0) | |
7871 | c = readchar (remote_timeout); | |
7872 | ||
7873 | return; | |
7874 | case '*': /* Run length encoding. */ | |
7875 | /* Discard the repeat count. */ | |
7876 | c = readchar (remote_timeout); | |
7877 | if (c < 0) | |
7878 | return; | |
7879 | break; | |
7880 | default: | |
7881 | /* A regular character. */ | |
7882 | break; | |
7883 | } | |
7884 | } | |
7885 | } | |
7886 | ||
c906108c | 7887 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7888 | into *BUF, verifying the checksum, length, and handling run-length |
7889 | compression. NUL terminate the buffer. If there is not enough room, | |
7890 | expand *BUF using xrealloc. | |
c906108c | 7891 | |
c2d11a7d JM |
7892 | Returns -1 on error, number of characters in buffer (ignoring the |
7893 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7894 | SERIAL status indications). */ |
c2d11a7d JM |
7895 | |
7896 | static long | |
6d820c5c DJ |
7897 | read_frame (char **buf_p, |
7898 | long *sizeof_buf) | |
c906108c SS |
7899 | { |
7900 | unsigned char csum; | |
c2d11a7d | 7901 | long bc; |
c906108c | 7902 | int c; |
6d820c5c | 7903 | char *buf = *buf_p; |
a6f3e723 | 7904 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7905 | |
7906 | csum = 0; | |
c2d11a7d | 7907 | bc = 0; |
c906108c SS |
7908 | |
7909 | while (1) | |
7910 | { | |
7911 | c = readchar (remote_timeout); | |
c906108c SS |
7912 | switch (c) |
7913 | { | |
7914 | case SERIAL_TIMEOUT: | |
7915 | if (remote_debug) | |
0f71a2f6 | 7916 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7917 | return -1; |
c906108c SS |
7918 | case '$': |
7919 | if (remote_debug) | |
0f71a2f6 JM |
7920 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7921 | gdb_stdlog); | |
23860348 | 7922 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7923 | case '#': |
7924 | { | |
7925 | unsigned char pktcsum; | |
e1b09194 AC |
7926 | int check_0 = 0; |
7927 | int check_1 = 0; | |
c906108c | 7928 | |
c2d11a7d | 7929 | buf[bc] = '\0'; |
c906108c | 7930 | |
e1b09194 AC |
7931 | check_0 = readchar (remote_timeout); |
7932 | if (check_0 >= 0) | |
7933 | check_1 = readchar (remote_timeout); | |
802188a7 | 7934 | |
e1b09194 AC |
7935 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7936 | { | |
7937 | if (remote_debug) | |
2bc416ba | 7938 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7939 | gdb_stdlog); |
e1b09194 AC |
7940 | return -1; |
7941 | } | |
7942 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7943 | { |
7944 | if (remote_debug) | |
2bc416ba | 7945 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7946 | gdb_stdlog); |
40e3f985 FN |
7947 | return -1; |
7948 | } | |
c906108c | 7949 | |
a6f3e723 SL |
7950 | /* Don't recompute the checksum; with no ack packets we |
7951 | don't have any way to indicate a packet retransmission | |
7952 | is necessary. */ | |
7953 | if (rs->noack_mode) | |
7954 | return bc; | |
7955 | ||
e1b09194 | 7956 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7957 | if (csum == pktcsum) |
c2d11a7d | 7958 | return bc; |
c906108c | 7959 | |
c5aa993b | 7960 | if (remote_debug) |
c906108c | 7961 | { |
6e5abd65 PA |
7962 | struct cleanup *old_chain; |
7963 | char *str; | |
7964 | ||
7965 | str = escape_buffer (buf, bc); | |
7966 | old_chain = make_cleanup (xfree, str); | |
7967 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7968 | "Bad checksum, sentsum=0x%x, " |
7969 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7970 | pktcsum, csum, str); |
7971 | do_cleanups (old_chain); | |
c906108c | 7972 | } |
c2d11a7d | 7973 | /* Number of characters in buffer ignoring trailing |
23860348 | 7974 | NULL. */ |
c2d11a7d | 7975 | return -1; |
c906108c | 7976 | } |
23860348 | 7977 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7978 | { |
7979 | int repeat; | |
c906108c | 7980 | |
a744cf53 | 7981 | csum += c; |
b4501125 AC |
7982 | c = readchar (remote_timeout); |
7983 | csum += c; | |
23860348 | 7984 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7985 | |
23860348 | 7986 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7987 | |
6d820c5c | 7988 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7989 | { |
6d820c5c DJ |
7990 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7991 | { | |
7992 | /* Make some more room in the buffer. */ | |
7993 | *sizeof_buf += repeat; | |
7994 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7995 | buf = *buf_p; | |
7996 | } | |
7997 | ||
c2d11a7d JM |
7998 | memset (&buf[bc], buf[bc - 1], repeat); |
7999 | bc += repeat; | |
c2c6d25f JM |
8000 | continue; |
8001 | } | |
8002 | ||
c2d11a7d | 8003 | buf[bc] = '\0'; |
6d820c5c | 8004 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 8005 | return -1; |
c2c6d25f | 8006 | } |
c906108c | 8007 | default: |
6d820c5c | 8008 | if (bc >= *sizeof_buf - 1) |
c906108c | 8009 | { |
6d820c5c DJ |
8010 | /* Make some more room in the buffer. */ |
8011 | *sizeof_buf *= 2; | |
8012 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8013 | buf = *buf_p; | |
c906108c SS |
8014 | } |
8015 | ||
6d820c5c DJ |
8016 | buf[bc++] = c; |
8017 | csum += c; | |
8018 | continue; | |
c906108c SS |
8019 | } |
8020 | } | |
8021 | } | |
8022 | ||
8023 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8024 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8025 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8026 | rather than timing out; this is used (in synchronous mode) to wait | |
8027 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
8028 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
8029 | don't have to change all the calls to getpkt to deal with the | |
8030 | return value, because at the moment I don't know what the right | |
23860348 | 8031 | thing to do it for those. */ |
c906108c | 8032 | void |
6d820c5c DJ |
8033 | getpkt (char **buf, |
8034 | long *sizeof_buf, | |
c2d11a7d | 8035 | int forever) |
d9fcf2fb JM |
8036 | { |
8037 | int timed_out; | |
8038 | ||
8039 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8040 | } | |
8041 | ||
8042 | ||
8043 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
8044 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
8045 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8046 | rather than timing out; this is used (in synchronous mode) to wait | |
8047 | for a target that is is executing user code to stop. If FOREVER == | |
8048 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
8049 | indication of this to the caller. Otherwise return the number of |
8050 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
8051 | enough reason to return to the caller. *IS_NOTIF is an output |
8052 | boolean that indicates whether *BUF holds a notification or not | |
8053 | (a regular packet). */ | |
74531fed | 8054 | |
3172dc30 | 8055 | static int |
74531fed | 8056 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 8057 | int expecting_notif, int *is_notif) |
c906108c | 8058 | { |
2d717e4f | 8059 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
8060 | int c; |
8061 | int tries; | |
8062 | int timeout; | |
df4b58fe | 8063 | int val = -1; |
c906108c | 8064 | |
2d717e4f DJ |
8065 | /* We're reading a new response. Make sure we don't look at a |
8066 | previously cached response. */ | |
8067 | rs->cached_wait_status = 0; | |
8068 | ||
6d820c5c | 8069 | strcpy (*buf, "timeout"); |
c906108c SS |
8070 | |
8071 | if (forever) | |
74531fed PA |
8072 | timeout = watchdog > 0 ? watchdog : -1; |
8073 | else if (expecting_notif) | |
8074 | timeout = 0; /* There should already be a char in the buffer. If | |
8075 | not, bail out. */ | |
c906108c SS |
8076 | else |
8077 | timeout = remote_timeout; | |
8078 | ||
8079 | #define MAX_TRIES 3 | |
8080 | ||
74531fed PA |
8081 | /* Process any number of notifications, and then return when |
8082 | we get a packet. */ | |
8083 | for (;;) | |
c906108c | 8084 | { |
d9c43928 | 8085 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
8086 | times. */ |
8087 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 8088 | { |
74531fed PA |
8089 | /* This can loop forever if the remote side sends us |
8090 | characters continuously, but if it pauses, we'll get | |
8091 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8092 | we'll count that as a retry. | |
8093 | ||
8094 | Note that even when forever is set, we will only wait | |
8095 | forever prior to the start of a packet. After that, we | |
8096 | expect characters to arrive at a brisk pace. They should | |
8097 | show up within remote_timeout intervals. */ | |
8098 | do | |
8099 | c = readchar (timeout); | |
8100 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
8101 | |
8102 | if (c == SERIAL_TIMEOUT) | |
8103 | { | |
74531fed PA |
8104 | if (expecting_notif) |
8105 | return -1; /* Don't complain, it's normal to not get | |
8106 | anything in this case. */ | |
8107 | ||
23860348 | 8108 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 8109 | { |
2acceee2 | 8110 | QUIT; |
78a095c3 | 8111 | remote_unpush_target (); |
598d3636 JK |
8112 | throw_error (TARGET_CLOSE_ERROR, |
8113 | _("Watchdog timeout has expired. " | |
8114 | "Target detached.")); | |
c906108c | 8115 | } |
c906108c | 8116 | if (remote_debug) |
0f71a2f6 | 8117 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 8118 | } |
74531fed PA |
8119 | else |
8120 | { | |
8121 | /* We've found the start of a packet or notification. | |
8122 | Now collect the data. */ | |
8123 | val = read_frame (buf, sizeof_buf); | |
8124 | if (val >= 0) | |
8125 | break; | |
8126 | } | |
8127 | ||
c33e31fd | 8128 | remote_serial_write ("-", 1); |
c906108c | 8129 | } |
c906108c | 8130 | |
74531fed PA |
8131 | if (tries > MAX_TRIES) |
8132 | { | |
8133 | /* We have tried hard enough, and just can't receive the | |
8134 | packet/notification. Give up. */ | |
8135 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 8136 | |
74531fed PA |
8137 | /* Skip the ack char if we're in no-ack mode. */ |
8138 | if (!rs->noack_mode) | |
c33e31fd | 8139 | remote_serial_write ("+", 1); |
74531fed PA |
8140 | return -1; |
8141 | } | |
c906108c | 8142 | |
74531fed PA |
8143 | /* If we got an ordinary packet, return that to our caller. */ |
8144 | if (c == '$') | |
c906108c SS |
8145 | { |
8146 | if (remote_debug) | |
43e526b9 | 8147 | { |
6e5abd65 PA |
8148 | struct cleanup *old_chain; |
8149 | char *str; | |
8150 | ||
8151 | str = escape_buffer (*buf, val); | |
8152 | old_chain = make_cleanup (xfree, str); | |
8153 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8154 | do_cleanups (old_chain); | |
43e526b9 | 8155 | } |
a6f3e723 SL |
8156 | |
8157 | /* Skip the ack char if we're in no-ack mode. */ | |
8158 | if (!rs->noack_mode) | |
c33e31fd | 8159 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
8160 | if (is_notif != NULL) |
8161 | *is_notif = 0; | |
0876f84a | 8162 | return val; |
c906108c SS |
8163 | } |
8164 | ||
74531fed PA |
8165 | /* If we got a notification, handle it, and go back to looking |
8166 | for a packet. */ | |
8167 | else | |
8168 | { | |
8169 | gdb_assert (c == '%'); | |
8170 | ||
8171 | if (remote_debug) | |
8172 | { | |
6e5abd65 PA |
8173 | struct cleanup *old_chain; |
8174 | char *str; | |
8175 | ||
8176 | str = escape_buffer (*buf, val); | |
8177 | old_chain = make_cleanup (xfree, str); | |
8178 | fprintf_unfiltered (gdb_stdlog, | |
8179 | " Notification received: %s\n", | |
8180 | str); | |
8181 | do_cleanups (old_chain); | |
74531fed | 8182 | } |
fee9eda9 YQ |
8183 | if (is_notif != NULL) |
8184 | *is_notif = 1; | |
c906108c | 8185 | |
5965e028 | 8186 | handle_notification (rs->notif_state, *buf); |
c906108c | 8187 | |
74531fed | 8188 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 8189 | |
74531fed | 8190 | if (expecting_notif) |
fee9eda9 | 8191 | return val; |
74531fed PA |
8192 | } |
8193 | } | |
8194 | } | |
8195 | ||
8196 | static int | |
8197 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8198 | { | |
fee9eda9 | 8199 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
8200 | } |
8201 | ||
8202 | static int | |
fee9eda9 YQ |
8203 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8204 | int *is_notif) | |
74531fed | 8205 | { |
fee9eda9 YQ |
8206 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8207 | is_notif); | |
c906108c | 8208 | } |
74531fed | 8209 | |
cbb8991c DB |
8210 | /* Check whether EVENT is a fork event for the process specified |
8211 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
8212 | ||
8213 | static int | |
8214 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
8215 | QUEUE_ITER (stop_reply_p) *iter, | |
8216 | stop_reply_p event, | |
8217 | void *data) | |
8218 | { | |
8219 | struct queue_iter_param *param = data; | |
8220 | int parent_pid = *(int *) param->input; | |
8221 | ||
8222 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8223 | { | |
8224 | struct remote_state *rs = get_remote_state (); | |
8225 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8226 | int res; | |
8227 | ||
8228 | res = remote_vkill (child_pid, rs); | |
8229 | if (res != 0) | |
8230 | error (_("Can't kill fork child process %d"), child_pid); | |
8231 | } | |
8232 | ||
8233 | return 1; | |
8234 | } | |
8235 | ||
8236 | /* Kill any new fork children of process PID that haven't been | |
8237 | processed by follow_fork. */ | |
8238 | ||
8239 | static void | |
8240 | kill_new_fork_children (int pid, struct remote_state *rs) | |
8241 | { | |
8242 | struct thread_info *thread; | |
8243 | struct notif_client *notif = ¬if_client_stop; | |
8244 | struct queue_iter_param param; | |
8245 | ||
8246 | /* Kill the fork child threads of any threads in process PID | |
8247 | that are stopped at a fork event. */ | |
8248 | ALL_NON_EXITED_THREADS (thread) | |
8249 | { | |
8250 | struct target_waitstatus *ws = &thread->pending_follow; | |
8251 | ||
8252 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8253 | { | |
8254 | struct remote_state *rs = get_remote_state (); | |
8255 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8256 | int res; | |
8257 | ||
8258 | res = remote_vkill (child_pid, rs); | |
8259 | if (res != 0) | |
8260 | error (_("Can't kill fork child process %d"), child_pid); | |
8261 | } | |
8262 | } | |
8263 | ||
8264 | /* Check for any pending fork events (not reported or processed yet) | |
8265 | in process PID and kill those fork child threads as well. */ | |
8266 | remote_notif_get_pending_events (notif); | |
8267 | param.input = &pid; | |
8268 | param.output = NULL; | |
8269 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8270 | kill_child_of_pending_fork, ¶m); | |
8271 | } | |
8272 | ||
c906108c SS |
8273 | \f |
8274 | static void | |
7d85a9c0 | 8275 | remote_kill (struct target_ops *ops) |
43ff13b4 | 8276 | { |
0fdf84ca PA |
8277 | |
8278 | /* Catch errors so the user can quit from gdb even when we | |
23860348 | 8279 | aren't on speaking terms with the remote system. */ |
492d29ea | 8280 | TRY |
0fdf84ca PA |
8281 | { |
8282 | putpkt ("k"); | |
8283 | } | |
492d29ea | 8284 | CATCH (ex, RETURN_MASK_ERROR) |
0fdf84ca PA |
8285 | { |
8286 | if (ex.error == TARGET_CLOSE_ERROR) | |
8287 | { | |
8288 | /* If we got an (EOF) error that caused the target | |
8289 | to go away, then we're done, that's what we wanted. | |
8290 | "k" is susceptible to cause a premature EOF, given | |
8291 | that the remote server isn't actually required to | |
8292 | reply to "k", and it can happen that it doesn't | |
8293 | even get to reply ACK to the "k". */ | |
8294 | return; | |
8295 | } | |
8296 | ||
8297 | /* Otherwise, something went wrong. We didn't actually kill | |
8298 | the target. Just propagate the exception, and let the | |
8299 | user or higher layers decide what to do. */ | |
8300 | throw_exception (ex); | |
8301 | } | |
492d29ea | 8302 | END_CATCH |
43ff13b4 | 8303 | |
0fdf84ca PA |
8304 | /* We've killed the remote end, we get to mourn it. Since this is |
8305 | target remote, single-process, mourning the inferior also | |
8306 | unpushes remote_ops. */ | |
43ff13b4 JM |
8307 | target_mourn_inferior (); |
8308 | } | |
8309 | ||
82f73884 PA |
8310 | static int |
8311 | remote_vkill (int pid, struct remote_state *rs) | |
8312 | { | |
4082afcc | 8313 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
8314 | return -1; |
8315 | ||
8316 | /* Tell the remote target to detach. */ | |
bba74b36 | 8317 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
8318 | putpkt (rs->buf); |
8319 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8320 | ||
4082afcc PA |
8321 | switch (packet_ok (rs->buf, |
8322 | &remote_protocol_packets[PACKET_vKill])) | |
8323 | { | |
8324 | case PACKET_OK: | |
8325 | return 0; | |
8326 | case PACKET_ERROR: | |
8327 | return 1; | |
8328 | case PACKET_UNKNOWN: | |
8329 | return -1; | |
8330 | default: | |
8331 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8332 | } | |
82f73884 PA |
8333 | } |
8334 | ||
8335 | static void | |
7d85a9c0 | 8336 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
8337 | { |
8338 | int res; | |
8339 | int pid = ptid_get_pid (inferior_ptid); | |
8340 | struct remote_state *rs = get_remote_state (); | |
8341 | ||
cbb8991c DB |
8342 | /* If we're stopped while forking and we haven't followed yet, kill the |
8343 | child task. We need to do this before killing the parent task | |
8344 | because if this is a vfork then the parent will be sleeping. */ | |
8345 | kill_new_fork_children (pid, rs); | |
8346 | ||
82f73884 | 8347 | res = remote_vkill (pid, rs); |
901f9912 | 8348 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
8349 | { |
8350 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8351 | to specify the pid. */ | |
8352 | ||
8353 | putpkt ("k"); | |
8354 | #if 0 | |
8355 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8356 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8357 | res = 1; | |
8358 | #else | |
8359 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8360 | we do or not. For the existing stubs, kill is a noop. */ | |
8361 | res = 0; | |
8362 | #endif | |
8363 | } | |
8364 | ||
8365 | if (res != 0) | |
8366 | error (_("Can't kill process")); | |
8367 | ||
82f73884 PA |
8368 | target_mourn_inferior (); |
8369 | } | |
8370 | ||
c906108c | 8371 | static void |
20f796c9 | 8372 | remote_mourn (struct target_ops *target) |
c906108c SS |
8373 | { |
8374 | unpush_target (target); | |
ce5ce7ed | 8375 | |
8a2492ee PA |
8376 | /* remote_close takes care of doing most of the clean up. */ |
8377 | generic_mourn_inferior (); | |
c906108c SS |
8378 | } |
8379 | ||
2d717e4f | 8380 | static void |
20f796c9 | 8381 | extended_remote_mourn (struct target_ops *target) |
2d717e4f DJ |
8382 | { |
8383 | struct remote_state *rs = get_remote_state (); | |
c906108c | 8384 | |
e24a49d8 PA |
8385 | /* In case we got here due to an error, but we're going to stay |
8386 | connected. */ | |
8387 | rs->waiting_for_stop_reply = 0; | |
8388 | ||
dc1981d7 PA |
8389 | /* If the current general thread belonged to the process we just |
8390 | detached from or has exited, the remote side current general | |
8391 | thread becomes undefined. Considering a case like this: | |
8392 | ||
8393 | - We just got here due to a detach. | |
8394 | - The process that we're detaching from happens to immediately | |
8395 | report a global breakpoint being hit in non-stop mode, in the | |
8396 | same thread we had selected before. | |
8397 | - GDB attaches to this process again. | |
8398 | - This event happens to be the next event we handle. | |
8399 | ||
8400 | GDB would consider that the current general thread didn't need to | |
8401 | be set on the stub side (with Hg), since for all it knew, | |
8402 | GENERAL_THREAD hadn't changed. | |
8403 | ||
8404 | Notice that although in all-stop mode, the remote server always | |
8405 | sets the current thread to the thread reporting the stop event, | |
8406 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8407 | not* change the current thread when reporting a breakpoint hit, | |
8408 | due to the decoupling of event reporting and event handling. | |
8409 | ||
8410 | To keep things simple, we always invalidate our notion of the | |
8411 | current thread. */ | |
47f8a51d | 8412 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 8413 | |
2d717e4f DJ |
8414 | /* Unlike "target remote", we do not want to unpush the target; then |
8415 | the next time the user says "run", we won't be connected. */ | |
8416 | ||
48aa3c27 PA |
8417 | /* Call common code to mark the inferior as not running. */ |
8418 | generic_mourn_inferior (); | |
8419 | ||
d729566a | 8420 | if (!have_inferiors ()) |
2d717e4f | 8421 | { |
82f73884 PA |
8422 | if (!remote_multi_process_p (rs)) |
8423 | { | |
8424 | /* Check whether the target is running now - some remote stubs | |
8425 | automatically restart after kill. */ | |
8426 | putpkt ("?"); | |
8427 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8428 | ||
8429 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8430 | { | |
3e43a32a MS |
8431 | /* Assume that the target has been restarted. Set |
8432 | inferior_ptid so that bits of core GDB realizes | |
8433 | there's something here, e.g., so that the user can | |
8434 | say "kill" again. */ | |
82f73884 PA |
8435 | inferior_ptid = magic_null_ptid; |
8436 | } | |
82f73884 | 8437 | } |
2d717e4f DJ |
8438 | } |
8439 | } | |
c906108c | 8440 | |
03583c20 | 8441 | static int |
2bfc0540 | 8442 | extended_remote_supports_disable_randomization (struct target_ops *self) |
03583c20 | 8443 | { |
4082afcc | 8444 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
8445 | } |
8446 | ||
8447 | static void | |
8448 | extended_remote_disable_randomization (int val) | |
8449 | { | |
8450 | struct remote_state *rs = get_remote_state (); | |
8451 | char *reply; | |
8452 | ||
bba74b36 YQ |
8453 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8454 | val); | |
03583c20 UW |
8455 | putpkt (rs->buf); |
8456 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8457 | if (*reply == '\0') | |
8458 | error (_("Target does not support QDisableRandomization.")); | |
8459 | if (strcmp (reply, "OK") != 0) | |
8460 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8461 | } | |
8462 | ||
2d717e4f DJ |
8463 | static int |
8464 | extended_remote_run (char *args) | |
8465 | { | |
8466 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 8467 | int len; |
c906108c | 8468 | |
2d717e4f DJ |
8469 | /* If the user has disabled vRun support, or we have detected that |
8470 | support is not available, do not try it. */ | |
4082afcc | 8471 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 8472 | return -1; |
424163ea | 8473 | |
2d717e4f DJ |
8474 | strcpy (rs->buf, "vRun;"); |
8475 | len = strlen (rs->buf); | |
c906108c | 8476 | |
2d717e4f DJ |
8477 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
8478 | error (_("Remote file name too long for run packet")); | |
9f1b45b0 TT |
8479 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8480 | strlen (remote_exec_file)); | |
2d717e4f | 8481 | |
d1a41061 | 8482 | gdb_assert (args != NULL); |
2d717e4f DJ |
8483 | if (*args) |
8484 | { | |
8485 | struct cleanup *back_to; | |
8486 | int i; | |
8487 | char **argv; | |
8488 | ||
d1a41061 | 8489 | argv = gdb_buildargv (args); |
6e366df1 | 8490 | back_to = make_cleanup_freeargv (argv); |
2d717e4f DJ |
8491 | for (i = 0; argv[i] != NULL; i++) |
8492 | { | |
8493 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8494 | error (_("Argument list too long for run packet")); | |
8495 | rs->buf[len++] = ';'; | |
9f1b45b0 TT |
8496 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8497 | strlen (argv[i])); | |
2d717e4f DJ |
8498 | } |
8499 | do_cleanups (back_to); | |
8500 | } | |
8501 | ||
8502 | rs->buf[len++] = '\0'; | |
8503 | ||
8504 | putpkt (rs->buf); | |
8505 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8506 | ||
4082afcc | 8507 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 8508 | { |
4082afcc | 8509 | case PACKET_OK: |
3405876a | 8510 | /* We have a wait response. All is well. */ |
2d717e4f | 8511 | return 0; |
4082afcc PA |
8512 | case PACKET_UNKNOWN: |
8513 | return -1; | |
8514 | case PACKET_ERROR: | |
2d717e4f DJ |
8515 | if (remote_exec_file[0] == '\0') |
8516 | error (_("Running the default executable on the remote target failed; " | |
8517 | "try \"set remote exec-file\"?")); | |
8518 | else | |
8519 | error (_("Running \"%s\" on the remote target failed"), | |
8520 | remote_exec_file); | |
4082afcc PA |
8521 | default: |
8522 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 8523 | } |
c906108c SS |
8524 | } |
8525 | ||
2d717e4f DJ |
8526 | /* In the extended protocol we want to be able to do things like |
8527 | "run" and have them basically work as expected. So we need | |
8528 | a special create_inferior function. We support changing the | |
8529 | executable file and the command line arguments, but not the | |
8530 | environment. */ | |
8531 | ||
43ff13b4 | 8532 | static void |
77a19445 TT |
8533 | extended_remote_create_inferior (struct target_ops *ops, |
8534 | char *exec_file, char *args, | |
8535 | char **env, int from_tty) | |
43ff13b4 | 8536 | { |
3405876a PA |
8537 | int run_worked; |
8538 | char *stop_reply; | |
8539 | struct remote_state *rs = get_remote_state (); | |
8540 | ||
43ff13b4 | 8541 | /* If running asynchronously, register the target file descriptor |
23860348 | 8542 | with the event loop. */ |
75c99385 | 8543 | if (target_can_async_p ()) |
6a3753b3 | 8544 | target_async (1); |
43ff13b4 | 8545 | |
03583c20 | 8546 | /* Disable address space randomization if requested (and supported). */ |
2bfc0540 | 8547 | if (extended_remote_supports_disable_randomization (ops)) |
03583c20 UW |
8548 | extended_remote_disable_randomization (disable_randomization); |
8549 | ||
43ff13b4 | 8550 | /* Now restart the remote server. */ |
3405876a PA |
8551 | run_worked = extended_remote_run (args) != -1; |
8552 | if (!run_worked) | |
2d717e4f DJ |
8553 | { |
8554 | /* vRun was not supported. Fail if we need it to do what the | |
8555 | user requested. */ | |
8556 | if (remote_exec_file[0]) | |
8557 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8558 | if (args[0]) | |
8559 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 8560 | |
2d717e4f DJ |
8561 | /* Fall back to "R". */ |
8562 | extended_remote_restart (); | |
8563 | } | |
424163ea | 8564 | |
6c95b8df PA |
8565 | if (!have_inferiors ()) |
8566 | { | |
8567 | /* Clean up from the last time we ran, before we mark the target | |
8568 | running again. This will mark breakpoints uninserted, and | |
8569 | get_offsets may insert breakpoints. */ | |
8570 | init_thread_list (); | |
8571 | init_wait_for_inferior (); | |
8572 | } | |
45280a52 | 8573 | |
3405876a PA |
8574 | /* vRun's success return is a stop reply. */ |
8575 | stop_reply = run_worked ? rs->buf : NULL; | |
8576 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 8577 | |
2d717e4f DJ |
8578 | /* Get updated offsets, if the stub uses qOffsets. */ |
8579 | get_offsets (); | |
2d717e4f | 8580 | } |
c906108c | 8581 | \f |
c5aa993b | 8582 | |
b775012e LM |
8583 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8584 | the list of conditions (in agent expression bytecode format), if any, the | |
8585 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 8586 | started from BUF and ended at BUF_END. */ |
b775012e LM |
8587 | |
8588 | static int | |
8589 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
8590 | struct bp_target_info *bp_tgt, char *buf, |
8591 | char *buf_end) | |
b775012e LM |
8592 | { |
8593 | struct agent_expr *aexpr = NULL; | |
8594 | int i, ix; | |
8595 | char *pkt; | |
8596 | char *buf_start = buf; | |
8597 | ||
8598 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8599 | return 0; | |
8600 | ||
8601 | buf += strlen (buf); | |
bba74b36 | 8602 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
8603 | buf++; |
8604 | ||
8605 | /* Send conditions to the target and free the vector. */ | |
8606 | for (ix = 0; | |
8607 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8608 | ix++) | |
8609 | { | |
bba74b36 | 8610 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
8611 | buf += strlen (buf); |
8612 | for (i = 0; i < aexpr->len; ++i) | |
8613 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8614 | *buf = '\0'; | |
8615 | } | |
b775012e LM |
8616 | return 0; |
8617 | } | |
8618 | ||
d3ce09f5 SS |
8619 | static void |
8620 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8621 | struct bp_target_info *bp_tgt, char *buf) | |
8622 | { | |
8623 | struct agent_expr *aexpr = NULL; | |
8624 | int i, ix; | |
8625 | ||
8626 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8627 | return; | |
8628 | ||
8629 | buf += strlen (buf); | |
8630 | ||
8631 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8632 | buf += strlen (buf); | |
8633 | ||
8634 | /* Concatenate all the agent expressions that are commands into the | |
8635 | cmds parameter. */ | |
8636 | for (ix = 0; | |
8637 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8638 | ix++) | |
8639 | { | |
8640 | sprintf (buf, "X%x,", aexpr->len); | |
8641 | buf += strlen (buf); | |
8642 | for (i = 0; i < aexpr->len; ++i) | |
8643 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8644 | *buf = '\0'; | |
8645 | } | |
d3ce09f5 SS |
8646 | } |
8647 | ||
8181d85f DJ |
8648 | /* Insert a breakpoint. On targets that have software breakpoint |
8649 | support, we ask the remote target to do the work; on targets | |
8650 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8651 | |
8652 | static int | |
3db08215 MM |
8653 | remote_insert_breakpoint (struct target_ops *ops, |
8654 | struct gdbarch *gdbarch, | |
a6d9a66e | 8655 | struct bp_target_info *bp_tgt) |
c906108c | 8656 | { |
d471ea57 AC |
8657 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8658 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8659 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8660 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8661 | |
4082afcc | 8662 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8663 | { |
0d5ed153 | 8664 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8665 | struct remote_state *rs; |
bba74b36 | 8666 | char *p, *endbuf; |
7c0f6dcc | 8667 | int bpsize; |
b775012e | 8668 | struct condition_list *cond = NULL; |
4fff2411 | 8669 | |
28439a30 PA |
8670 | /* Make sure the remote is pointing at the right process, if |
8671 | necessary. */ | |
8672 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8673 | set_general_process (); | |
8674 | ||
a1dcb23a | 8675 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8676 | |
8677 | rs = get_remote_state (); | |
8678 | p = rs->buf; | |
bba74b36 | 8679 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8680 | |
96baa820 JM |
8681 | *(p++) = 'Z'; |
8682 | *(p++) = '0'; | |
8683 | *(p++) = ','; | |
7c0f6dcc | 8684 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8685 | p += hexnumstr (p, addr); |
bba74b36 | 8686 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8687 | |
efcc2da7 | 8688 | if (remote_supports_cond_breakpoints (ops)) |
bba74b36 | 8689 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8690 | |
78eff0ec | 8691 | if (remote_can_run_breakpoint_commands (ops)) |
d3ce09f5 SS |
8692 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
8693 | ||
6d820c5c DJ |
8694 | putpkt (rs->buf); |
8695 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8696 | |
6d820c5c | 8697 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8698 | { |
d471ea57 AC |
8699 | case PACKET_ERROR: |
8700 | return -1; | |
8701 | case PACKET_OK: | |
7c0f6dcc JL |
8702 | bp_tgt->placed_address = addr; |
8703 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8704 | return 0; |
8705 | case PACKET_UNKNOWN: | |
8706 | break; | |
96baa820 JM |
8707 | } |
8708 | } | |
c906108c | 8709 | |
0000e5cc PA |
8710 | /* If this breakpoint has target-side commands but this stub doesn't |
8711 | support Z0 packets, throw error. */ | |
8712 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8713 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8714 | Target doesn't support breakpoints that have target side commands.")); | |
8715 | ||
3db08215 | 8716 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8717 | } |
8718 | ||
8719 | static int | |
3db08215 MM |
8720 | remote_remove_breakpoint (struct target_ops *ops, |
8721 | struct gdbarch *gdbarch, | |
a6d9a66e | 8722 | struct bp_target_info *bp_tgt) |
c906108c | 8723 | { |
8181d85f | 8724 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8725 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8726 | |
4082afcc | 8727 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 8728 | { |
6d820c5c | 8729 | char *p = rs->buf; |
bba74b36 | 8730 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8731 | |
28439a30 PA |
8732 | /* Make sure the remote is pointing at the right process, if |
8733 | necessary. */ | |
8734 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8735 | set_general_process (); | |
8736 | ||
96baa820 JM |
8737 | *(p++) = 'z'; |
8738 | *(p++) = '0'; | |
8739 | *(p++) = ','; | |
8740 | ||
8181d85f DJ |
8741 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8742 | p += hexnumstr (p, addr); | |
bba74b36 | 8743 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8744 | |
6d820c5c DJ |
8745 | putpkt (rs->buf); |
8746 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8747 | |
6d820c5c | 8748 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8749 | } |
8750 | ||
3db08215 | 8751 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
c906108c SS |
8752 | } |
8753 | ||
f486487f | 8754 | static enum Z_packet_type |
d471ea57 AC |
8755 | watchpoint_to_Z_packet (int type) |
8756 | { | |
8757 | switch (type) | |
8758 | { | |
8759 | case hw_write: | |
bb858e6a | 8760 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8761 | break; |
8762 | case hw_read: | |
bb858e6a | 8763 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8764 | break; |
8765 | case hw_access: | |
bb858e6a | 8766 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8767 | break; |
8768 | default: | |
8e65ff28 | 8769 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8770 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8771 | } |
8772 | } | |
8773 | ||
3c3bea1c | 8774 | static int |
f486487f SM |
8775 | remote_insert_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8776 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8777 | { |
d01949b6 | 8778 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8779 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8780 | char *p; |
d471ea57 | 8781 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8782 | |
4082afcc | 8783 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 8784 | return 1; |
802188a7 | 8785 | |
28439a30 PA |
8786 | /* Make sure the remote is pointing at the right process, if |
8787 | necessary. */ | |
8788 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8789 | set_general_process (); | |
8790 | ||
bba74b36 | 8791 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8792 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8793 | addr = remote_address_masked (addr); |
8794 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8795 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8796 | |
6d820c5c DJ |
8797 | putpkt (rs->buf); |
8798 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8799 | |
6d820c5c | 8800 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8801 | { |
8802 | case PACKET_ERROR: | |
d471ea57 | 8803 | return -1; |
85d721b8 PA |
8804 | case PACKET_UNKNOWN: |
8805 | return 1; | |
d471ea57 AC |
8806 | case PACKET_OK: |
8807 | return 0; | |
8808 | } | |
8e65ff28 | 8809 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8810 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8811 | } |
8812 | ||
283002cf MR |
8813 | static int |
8814 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8815 | CORE_ADDR start, int length) | |
8816 | { | |
8817 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8818 | ||
8819 | return diff < length; | |
8820 | } | |
8821 | ||
d471ea57 | 8822 | |
3c3bea1c | 8823 | static int |
f486487f SM |
8824 | remote_remove_watchpoint (struct target_ops *self, CORE_ADDR addr, int len, |
8825 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 8826 | { |
d01949b6 | 8827 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8828 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8829 | char *p; |
d471ea57 AC |
8830 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8831 | ||
4082afcc | 8832 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 8833 | return -1; |
802188a7 | 8834 | |
28439a30 PA |
8835 | /* Make sure the remote is pointing at the right process, if |
8836 | necessary. */ | |
8837 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8838 | set_general_process (); | |
8839 | ||
bba74b36 | 8840 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8841 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8842 | addr = remote_address_masked (addr); |
8843 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8844 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8845 | putpkt (rs->buf); |
8846 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8847 | |
6d820c5c | 8848 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8849 | { |
8850 | case PACKET_ERROR: | |
8851 | case PACKET_UNKNOWN: | |
8852 | return -1; | |
8853 | case PACKET_OK: | |
8854 | return 0; | |
8855 | } | |
8e65ff28 | 8856 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8857 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8858 | } |
8859 | ||
3c3bea1c | 8860 | |
501eef12 | 8861 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8862 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8863 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8864 | |
480a3f21 | 8865 | static int |
31568a15 TT |
8866 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8867 | CORE_ADDR addr, int len) | |
480a3f21 PW |
8868 | { |
8869 | if (remote_hw_watchpoint_length_limit == 0) | |
8870 | return 0; | |
8871 | else if (remote_hw_watchpoint_length_limit < 0) | |
8872 | return 1; | |
8873 | else if (len <= remote_hw_watchpoint_length_limit) | |
8874 | return 1; | |
8875 | else | |
8876 | return 0; | |
8877 | } | |
8878 | ||
b9362cc7 | 8879 | static int |
5461485a | 8880 | remote_check_watch_resources (struct target_ops *self, |
f486487f | 8881 | enum bptype type, int cnt, int ot) |
96baa820 | 8882 | { |
3c3bea1c GS |
8883 | if (type == bp_hardware_breakpoint) |
8884 | { | |
8885 | if (remote_hw_breakpoint_limit == 0) | |
8886 | return 0; | |
501eef12 AC |
8887 | else if (remote_hw_breakpoint_limit < 0) |
8888 | return 1; | |
3c3bea1c GS |
8889 | else if (cnt <= remote_hw_breakpoint_limit) |
8890 | return 1; | |
8891 | } | |
8892 | else | |
8893 | { | |
8894 | if (remote_hw_watchpoint_limit == 0) | |
8895 | return 0; | |
501eef12 AC |
8896 | else if (remote_hw_watchpoint_limit < 0) |
8897 | return 1; | |
3c3bea1c GS |
8898 | else if (ot) |
8899 | return -1; | |
8900 | else if (cnt <= remote_hw_watchpoint_limit) | |
8901 | return 1; | |
8902 | } | |
8903 | return -1; | |
8904 | } | |
8905 | ||
f7e6eed5 PA |
8906 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
8907 | ||
8908 | static int | |
8909 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8910 | { | |
8911 | struct remote_state *rs = get_remote_state (); | |
8912 | ||
8913 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
8914 | } | |
8915 | ||
8916 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
8917 | remote. */ | |
8918 | ||
8919 | static int | |
8920 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8921 | { | |
8922 | struct remote_state *rs = get_remote_state (); | |
8923 | ||
8924 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
8925 | } | |
8926 | ||
8927 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
8928 | ||
8929 | static int | |
8930 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8931 | { | |
8932 | struct remote_state *rs = get_remote_state (); | |
8933 | ||
8934 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
8935 | } | |
8936 | ||
8937 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
8938 | remote. */ | |
8939 | ||
8940 | static int | |
8941 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8942 | { | |
8943 | struct remote_state *rs = get_remote_state (); | |
8944 | ||
8945 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
8946 | } | |
8947 | ||
b9362cc7 | 8948 | static int |
6a109b6b | 8949 | remote_stopped_by_watchpoint (struct target_ops *ops) |
3c3bea1c | 8950 | { |
ee154bee TT |
8951 | struct remote_state *rs = get_remote_state (); |
8952 | ||
f7e6eed5 | 8953 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; |
3c3bea1c GS |
8954 | } |
8955 | ||
4aa7a7f5 JJ |
8956 | static int |
8957 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8958 | { |
ee154bee | 8959 | struct remote_state *rs = get_remote_state (); |
4aa7a7f5 | 8960 | int rc = 0; |
a744cf53 | 8961 | |
6a109b6b | 8962 | if (remote_stopped_by_watchpoint (target)) |
4aa7a7f5 | 8963 | { |
ee154bee | 8964 | *addr_p = rs->remote_watch_data_address; |
4aa7a7f5 JJ |
8965 | rc = 1; |
8966 | } | |
8967 | ||
8968 | return rc; | |
3c3bea1c GS |
8969 | } |
8970 | ||
8971 | ||
8972 | static int | |
23a26771 | 8973 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 8974 | struct bp_target_info *bp_tgt) |
3c3bea1c | 8975 | { |
0d5ed153 | 8976 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 8977 | struct remote_state *rs; |
bba74b36 | 8978 | char *p, *endbuf; |
dd61ec5c | 8979 | char *message; |
0d5ed153 | 8980 | int bpsize; |
802188a7 | 8981 | |
c8189ed1 | 8982 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8983 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8984 | |
0d5ed153 | 8985 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
3c3bea1c | 8986 | |
4082afcc | 8987 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 8988 | return -1; |
2bc416ba | 8989 | |
28439a30 PA |
8990 | /* Make sure the remote is pointing at the right process, if |
8991 | necessary. */ | |
8992 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8993 | set_general_process (); | |
8994 | ||
4fff2411 JZ |
8995 | rs = get_remote_state (); |
8996 | p = rs->buf; | |
bba74b36 | 8997 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8998 | |
96baa820 JM |
8999 | *(p++) = 'Z'; |
9000 | *(p++) = '1'; | |
9001 | *(p++) = ','; | |
802188a7 | 9002 | |
0d5ed153 | 9003 | addr = remote_address_masked (addr); |
96baa820 | 9004 | p += hexnumstr (p, (ULONGEST) addr); |
0d5ed153 | 9005 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
96baa820 | 9006 | |
efcc2da7 | 9007 | if (remote_supports_cond_breakpoints (self)) |
bba74b36 | 9008 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 9009 | |
78eff0ec | 9010 | if (remote_can_run_breakpoint_commands (self)) |
d3ce09f5 SS |
9011 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
9012 | ||
6d820c5c DJ |
9013 | putpkt (rs->buf); |
9014 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 9015 | |
6d820c5c | 9016 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9017 | { |
9018 | case PACKET_ERROR: | |
dd61ec5c MW |
9019 | if (rs->buf[1] == '.') |
9020 | { | |
9021 | message = strchr (rs->buf + 2, '.'); | |
9022 | if (message) | |
0316657e | 9023 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
9024 | } |
9025 | return -1; | |
d471ea57 AC |
9026 | case PACKET_UNKNOWN: |
9027 | return -1; | |
9028 | case PACKET_OK: | |
0d5ed153 MR |
9029 | bp_tgt->placed_address = addr; |
9030 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
9031 | return 0; |
9032 | } | |
8e65ff28 | 9033 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9034 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
9035 | } |
9036 | ||
d471ea57 | 9037 | |
802188a7 | 9038 | static int |
a64dc96c | 9039 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
a6d9a66e | 9040 | struct bp_target_info *bp_tgt) |
96baa820 | 9041 | { |
8181d85f | 9042 | CORE_ADDR addr; |
d01949b6 | 9043 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 9044 | char *p = rs->buf; |
bba74b36 | 9045 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 9046 | |
4082afcc | 9047 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 9048 | return -1; |
802188a7 | 9049 | |
28439a30 PA |
9050 | /* Make sure the remote is pointing at the right process, if |
9051 | necessary. */ | |
9052 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9053 | set_general_process (); | |
9054 | ||
96baa820 JM |
9055 | *(p++) = 'z'; |
9056 | *(p++) = '1'; | |
9057 | *(p++) = ','; | |
802188a7 | 9058 | |
8181d85f | 9059 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 9060 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 9061 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 9062 | |
6d820c5c DJ |
9063 | putpkt (rs->buf); |
9064 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 9065 | |
6d820c5c | 9066 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
9067 | { |
9068 | case PACKET_ERROR: | |
9069 | case PACKET_UNKNOWN: | |
9070 | return -1; | |
9071 | case PACKET_OK: | |
9072 | return 0; | |
9073 | } | |
8e65ff28 | 9074 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9075 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 9076 | } |
96baa820 | 9077 | |
4a5e7a5b PA |
9078 | /* Verify memory using the "qCRC:" request. */ |
9079 | ||
9080 | static int | |
9081 | remote_verify_memory (struct target_ops *ops, | |
9082 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9083 | { | |
9084 | struct remote_state *rs = get_remote_state (); | |
9085 | unsigned long host_crc, target_crc; | |
9086 | char *tmp; | |
9087 | ||
936d2992 PA |
9088 | /* It doesn't make sense to use qCRC if the remote target is |
9089 | connected but not running. */ | |
9090 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9091 | { | |
9092 | enum packet_result result; | |
28439a30 | 9093 | |
936d2992 PA |
9094 | /* Make sure the remote is pointing at the right process. */ |
9095 | set_general_process (); | |
4a5e7a5b | 9096 | |
936d2992 PA |
9097 | /* FIXME: assumes lma can fit into long. */ |
9098 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9099 | (long) lma, (long) size); | |
9100 | putpkt (rs->buf); | |
4a5e7a5b | 9101 | |
936d2992 PA |
9102 | /* Be clever; compute the host_crc before waiting for target |
9103 | reply. */ | |
9104 | host_crc = xcrc32 (data, size, 0xffffffff); | |
9105 | ||
9106 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4a5e7a5b | 9107 | |
936d2992 PA |
9108 | result = packet_ok (rs->buf, |
9109 | &remote_protocol_packets[PACKET_qCRC]); | |
9110 | if (result == PACKET_ERROR) | |
9111 | return -1; | |
9112 | else if (result == PACKET_OK) | |
9113 | { | |
9114 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9115 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 9116 | |
936d2992 PA |
9117 | return (host_crc == target_crc); |
9118 | } | |
9119 | } | |
4a5e7a5b | 9120 | |
936d2992 | 9121 | return simple_verify_memory (ops, data, lma, size); |
4a5e7a5b PA |
9122 | } |
9123 | ||
c906108c SS |
9124 | /* compare-sections command |
9125 | ||
9126 | With no arguments, compares each loadable section in the exec bfd | |
9127 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 9128 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 9129 | |
c906108c | 9130 | static void |
fba45db2 | 9131 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
9132 | { |
9133 | asection *s; | |
c906108c | 9134 | struct cleanup *old_chain; |
948f8e3d | 9135 | gdb_byte *sectdata; |
ce359b09 | 9136 | const char *sectname; |
c906108c SS |
9137 | bfd_size_type size; |
9138 | bfd_vma lma; | |
9139 | int matched = 0; | |
9140 | int mismatched = 0; | |
4a5e7a5b | 9141 | int res; |
95cf3b38 | 9142 | int read_only = 0; |
c906108c SS |
9143 | |
9144 | if (!exec_bfd) | |
8a3fe4f8 | 9145 | error (_("command cannot be used without an exec file")); |
c906108c | 9146 | |
28439a30 PA |
9147 | /* Make sure the remote is pointing at the right process. */ |
9148 | set_general_process (); | |
9149 | ||
95cf3b38 DT |
9150 | if (args != NULL && strcmp (args, "-r") == 0) |
9151 | { | |
9152 | read_only = 1; | |
9153 | args = NULL; | |
9154 | } | |
9155 | ||
c5aa993b | 9156 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
9157 | { |
9158 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 9159 | continue; /* Skip non-loadable section. */ |
c906108c | 9160 | |
95cf3b38 DT |
9161 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9162 | continue; /* Skip writeable sections */ | |
9163 | ||
2c500098 | 9164 | size = bfd_get_section_size (s); |
c906108c | 9165 | if (size == 0) |
0df8b418 | 9166 | continue; /* Skip zero-length section. */ |
c906108c | 9167 | |
ce359b09 | 9168 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 9169 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 9170 | continue; /* Not the section selected by user. */ |
c906108c | 9171 | |
0df8b418 | 9172 | matched = 1; /* Do this section. */ |
c906108c | 9173 | lma = s->lma; |
c906108c | 9174 | |
c906108c | 9175 | sectdata = xmalloc (size); |
b8c9b27d | 9176 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 9177 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 9178 | |
4a5e7a5b PA |
9179 | res = target_verify_memory (sectdata, lma, size); |
9180 | ||
9181 | if (res == -1) | |
5af949e3 | 9182 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
9183 | paddress (target_gdbarch (), lma), |
9184 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 9185 | |
5af949e3 | 9186 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
9187 | paddress (target_gdbarch (), lma), |
9188 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 9189 | if (res) |
c906108c SS |
9190 | printf_filtered ("matched.\n"); |
9191 | else | |
c5aa993b JM |
9192 | { |
9193 | printf_filtered ("MIS-MATCHED!\n"); | |
9194 | mismatched++; | |
9195 | } | |
c906108c SS |
9196 | |
9197 | do_cleanups (old_chain); | |
9198 | } | |
9199 | if (mismatched > 0) | |
936d2992 | 9200 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 9201 | the loaded file\n")); |
c906108c | 9202 | if (args && !matched) |
a3f17187 | 9203 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
9204 | } |
9205 | ||
0e7f50da UW |
9206 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
9207 | into remote target. The number of bytes written to the remote | |
9208 | target is returned, or -1 for error. */ | |
9209 | ||
9b409511 | 9210 | static enum target_xfer_status |
0e7f50da UW |
9211 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9212 | const char *annex, const gdb_byte *writebuf, | |
9b409511 | 9213 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
0e7f50da UW |
9214 | struct packet_config *packet) |
9215 | { | |
9216 | int i, buf_len; | |
9217 | ULONGEST n; | |
0e7f50da UW |
9218 | struct remote_state *rs = get_remote_state (); |
9219 | int max_size = get_memory_write_packet_size (); | |
9220 | ||
9221 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9222 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9223 | |
9224 | /* Insert header. */ | |
9225 | i = snprintf (rs->buf, max_size, | |
9226 | "qXfer:%s:write:%s:%s:", | |
9227 | object_name, annex ? annex : "", | |
9228 | phex_nz (offset, sizeof offset)); | |
9229 | max_size -= (i + 1); | |
9230 | ||
9231 | /* Escape as much data as fits into rs->buf. */ | |
9232 | buf_len = remote_escape_output | |
124e13d9 | 9233 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
0e7f50da UW |
9234 | |
9235 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9236 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9237 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9238 | return TARGET_XFER_E_IO; |
0e7f50da UW |
9239 | |
9240 | unpack_varlen_hex (rs->buf, &n); | |
9b409511 YQ |
9241 | |
9242 | *xfered_len = n; | |
9243 | return TARGET_XFER_OK; | |
0e7f50da UW |
9244 | } |
9245 | ||
0876f84a DJ |
9246 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
9247 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9248 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9249 | The number of bytes read may be less than LEN without indicating an | |
9250 | EOF. PACKET is checked and updated to indicate whether the remote | |
9251 | target supports this object. */ | |
9252 | ||
9b409511 | 9253 | static enum target_xfer_status |
0876f84a DJ |
9254 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9255 | const char *annex, | |
9256 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
9b409511 | 9257 | ULONGEST *xfered_len, |
0876f84a DJ |
9258 | struct packet_config *packet) |
9259 | { | |
0876f84a | 9260 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
9261 | LONGEST i, n, packet_len; |
9262 | ||
9263 | if (packet->support == PACKET_DISABLE) | |
2ed4b548 | 9264 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9265 | |
9266 | /* Check whether we've cached an end-of-object packet that matches | |
9267 | this request. */ | |
8e88304f | 9268 | if (rs->finished_object) |
0876f84a | 9269 | { |
8e88304f TT |
9270 | if (strcmp (object_name, rs->finished_object) == 0 |
9271 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9272 | && offset == rs->finished_offset) | |
9b409511 YQ |
9273 | return TARGET_XFER_EOF; |
9274 | ||
0876f84a DJ |
9275 | |
9276 | /* Otherwise, we're now reading something different. Discard | |
9277 | the cache. */ | |
8e88304f TT |
9278 | xfree (rs->finished_object); |
9279 | xfree (rs->finished_annex); | |
9280 | rs->finished_object = NULL; | |
9281 | rs->finished_annex = NULL; | |
0876f84a DJ |
9282 | } |
9283 | ||
9284 | /* Request only enough to fit in a single packet. The actual data | |
9285 | may not, since we don't know how much of it will need to be escaped; | |
9286 | the target is free to respond with slightly less data. We subtract | |
9287 | five to account for the response type and the protocol frame. */ | |
9288 | n = min (get_remote_packet_size () - 5, len); | |
9289 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9290 | object_name, annex ? annex : "", | |
9291 | phex_nz (offset, sizeof offset), | |
9292 | phex_nz (n, sizeof n)); | |
9293 | i = putpkt (rs->buf); | |
9294 | if (i < 0) | |
2ed4b548 | 9295 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9296 | |
9297 | rs->buf[0] = '\0'; | |
9298 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9299 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
2ed4b548 | 9300 | return TARGET_XFER_E_IO; |
0876f84a DJ |
9301 | |
9302 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9303 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9304 | ||
9305 | /* 'm' means there is (or at least might be) more data after this | |
9306 | batch. That does not make sense unless there's at least one byte | |
9307 | of data in this reply. */ | |
9308 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9309 | error (_("Remote qXfer reply contained no data.")); | |
9310 | ||
9311 | /* Got some data. */ | |
bc20a4af PA |
9312 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9313 | packet_len - 1, readbuf, n); | |
0876f84a DJ |
9314 | |
9315 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
9316 | or possibly empty. If we have the final block of a non-empty |
9317 | object, record this fact to bypass a subsequent partial read. */ | |
9318 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 9319 | { |
8e88304f TT |
9320 | rs->finished_object = xstrdup (object_name); |
9321 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9322 | rs->finished_offset = offset + i; | |
0876f84a DJ |
9323 | } |
9324 | ||
9b409511 YQ |
9325 | if (i == 0) |
9326 | return TARGET_XFER_EOF; | |
9327 | else | |
9328 | { | |
9329 | *xfered_len = i; | |
9330 | return TARGET_XFER_OK; | |
9331 | } | |
0876f84a DJ |
9332 | } |
9333 | ||
9b409511 | 9334 | static enum target_xfer_status |
4b8a223f | 9335 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 | 9336 | const char *annex, gdb_byte *readbuf, |
9b409511 YQ |
9337 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9338 | ULONGEST *xfered_len) | |
c906108c | 9339 | { |
82f73884 | 9340 | struct remote_state *rs; |
c906108c | 9341 | int i; |
6d820c5c | 9342 | char *p2; |
1e3ff5ad | 9343 | char query_type; |
124e13d9 | 9344 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 9345 | |
e6e4e701 | 9346 | set_remote_traceframe (); |
82f73884 PA |
9347 | set_general_thread (inferior_ptid); |
9348 | ||
9349 | rs = get_remote_state (); | |
9350 | ||
b2182ed2 | 9351 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
9352 | if (object == TARGET_OBJECT_MEMORY) |
9353 | { | |
2d717e4f DJ |
9354 | /* If the remote target is connected but not running, we should |
9355 | pass this request down to a lower stratum (e.g. the executable | |
9356 | file). */ | |
9357 | if (!target_has_execution) | |
9b409511 | 9358 | return TARGET_XFER_EOF; |
2d717e4f | 9359 | |
21e3b9b9 | 9360 | if (writebuf != NULL) |
124e13d9 SM |
9361 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9362 | xfered_len); | |
21e3b9b9 | 9363 | else |
124e13d9 SM |
9364 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9365 | xfered_len); | |
21e3b9b9 DJ |
9366 | } |
9367 | ||
0df8b418 | 9368 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
9369 | if (object == TARGET_OBJECT_SPU) |
9370 | { | |
9371 | if (readbuf) | |
9372 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
9b409511 YQ |
9373 | xfered_len, &remote_protocol_packets |
9374 | [PACKET_qXfer_spu_read]); | |
0e7f50da UW |
9375 | else |
9376 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
9b409511 YQ |
9377 | xfered_len, &remote_protocol_packets |
9378 | [PACKET_qXfer_spu_write]); | |
0e7f50da UW |
9379 | } |
9380 | ||
4aa995e1 PA |
9381 | /* Handle extra signal info using qxfer packets. */ |
9382 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9383 | { | |
9384 | if (readbuf) | |
9385 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
9b409511 | 9386 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
9387 | [PACKET_qXfer_siginfo_read]); |
9388 | else | |
3e43a32a | 9389 | return remote_write_qxfer (ops, "siginfo", annex, |
9b409511 | 9390 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
9391 | &remote_protocol_packets |
9392 | [PACKET_qXfer_siginfo_write]); | |
9393 | } | |
9394 | ||
0fb4aa4b PA |
9395 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9396 | { | |
9397 | if (readbuf) | |
3e43a32a | 9398 | return remote_read_qxfer (ops, "statictrace", annex, |
9b409511 | 9399 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
9400 | &remote_protocol_packets |
9401 | [PACKET_qXfer_statictrace_read]); | |
9402 | else | |
2ed4b548 | 9403 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
9404 | } |
9405 | ||
a76d924d DJ |
9406 | /* Only handle flash writes. */ |
9407 | if (writebuf != NULL) | |
9408 | { | |
9409 | LONGEST xfered; | |
9410 | ||
9411 | switch (object) | |
9412 | { | |
9413 | case TARGET_OBJECT_FLASH: | |
9b409511 YQ |
9414 | return remote_flash_write (ops, offset, len, xfered_len, |
9415 | writebuf); | |
a76d924d DJ |
9416 | |
9417 | default: | |
2ed4b548 | 9418 | return TARGET_XFER_E_IO; |
a76d924d DJ |
9419 | } |
9420 | } | |
4b8a223f | 9421 | |
1e3ff5ad AC |
9422 | /* Map pre-existing objects onto letters. DO NOT do this for new |
9423 | objects!!! Instead specify new query packets. */ | |
9424 | switch (object) | |
c906108c | 9425 | { |
1e3ff5ad AC |
9426 | case TARGET_OBJECT_AVR: |
9427 | query_type = 'R'; | |
9428 | break; | |
802188a7 RM |
9429 | |
9430 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
9431 | gdb_assert (annex == NULL); |
9432 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
9b409511 | 9433 | xfered_len, |
0876f84a | 9434 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 9435 | |
23181151 DJ |
9436 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
9437 | return remote_read_qxfer | |
9b409511 | 9438 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
9439 | &remote_protocol_packets[PACKET_qXfer_features]); |
9440 | ||
cfa9d6d9 DJ |
9441 | case TARGET_OBJECT_LIBRARIES: |
9442 | return remote_read_qxfer | |
9b409511 | 9443 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
9444 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9445 | ||
2268b414 JK |
9446 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9447 | return remote_read_qxfer | |
9b409511 | 9448 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
9449 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9450 | ||
fd79ecee DJ |
9451 | case TARGET_OBJECT_MEMORY_MAP: |
9452 | gdb_assert (annex == NULL); | |
9453 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
9b409511 | 9454 | xfered_len, |
fd79ecee DJ |
9455 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9456 | ||
07e059b5 VP |
9457 | case TARGET_OBJECT_OSDATA: |
9458 | /* Should only get here if we're connected. */ | |
5d93a237 | 9459 | gdb_assert (rs->remote_desc); |
07e059b5 | 9460 | return remote_read_qxfer |
9b409511 | 9461 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
9462 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9463 | ||
dc146f7c VP |
9464 | case TARGET_OBJECT_THREADS: |
9465 | gdb_assert (annex == NULL); | |
9466 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
9b409511 | 9467 | xfered_len, |
dc146f7c VP |
9468 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9469 | ||
b3b9301e PA |
9470 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9471 | gdb_assert (annex == NULL); | |
9472 | return remote_read_qxfer | |
9b409511 | 9473 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 9474 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
9475 | |
9476 | case TARGET_OBJECT_FDPIC: | |
9477 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
9b409511 | 9478 | xfered_len, |
78d85199 | 9479 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
9480 | |
9481 | case TARGET_OBJECT_OPENVMS_UIB: | |
9482 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
9b409511 | 9483 | xfered_len, |
169081d0 TG |
9484 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9485 | ||
9accd112 MM |
9486 | case TARGET_OBJECT_BTRACE: |
9487 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
9b409511 | 9488 | xfered_len, |
9accd112 MM |
9489 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9490 | ||
f4abbc16 MM |
9491 | case TARGET_OBJECT_BTRACE_CONF: |
9492 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9493 | len, xfered_len, | |
9494 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9495 | ||
c78fa86a GB |
9496 | case TARGET_OBJECT_EXEC_FILE: |
9497 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9498 | len, xfered_len, | |
9499 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9500 | ||
1e3ff5ad | 9501 | default: |
2ed4b548 | 9502 | return TARGET_XFER_E_IO; |
c906108c SS |
9503 | } |
9504 | ||
0df8b418 | 9505 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 9506 | large enough let the caller deal with it. */ |
ea9c271d | 9507 | if (len < get_remote_packet_size ()) |
2ed4b548 | 9508 | return TARGET_XFER_E_IO; |
ea9c271d | 9509 | len = get_remote_packet_size (); |
1e3ff5ad | 9510 | |
23860348 | 9511 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 9512 | if (!rs->remote_desc) |
8a3fe4f8 | 9513 | error (_("remote query is only available after target open")); |
c906108c | 9514 | |
1e3ff5ad | 9515 | gdb_assert (annex != NULL); |
4b8a223f | 9516 | gdb_assert (readbuf != NULL); |
c906108c | 9517 | |
6d820c5c | 9518 | p2 = rs->buf; |
c906108c SS |
9519 | *p2++ = 'q'; |
9520 | *p2++ = query_type; | |
9521 | ||
23860348 MS |
9522 | /* We used one buffer char for the remote protocol q command and |
9523 | another for the query type. As the remote protocol encapsulation | |
9524 | uses 4 chars plus one extra in case we are debugging | |
9525 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9526 | string. */ | |
c906108c | 9527 | i = 0; |
ea9c271d | 9528 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 9529 | { |
1e3ff5ad AC |
9530 | /* Bad caller may have sent forbidden characters. */ |
9531 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9532 | *p2++ = annex[i]; | |
c906108c SS |
9533 | i++; |
9534 | } | |
1e3ff5ad AC |
9535 | *p2 = '\0'; |
9536 | gdb_assert (annex[i] == '\0'); | |
c906108c | 9537 | |
6d820c5c | 9538 | i = putpkt (rs->buf); |
c5aa993b | 9539 | if (i < 0) |
2ed4b548 | 9540 | return TARGET_XFER_E_IO; |
c906108c | 9541 | |
6d820c5c DJ |
9542 | getpkt (&rs->buf, &rs->buf_size, 0); |
9543 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 9544 | |
9b409511 YQ |
9545 | *xfered_len = strlen ((char *) readbuf); |
9546 | return TARGET_XFER_OK; | |
c906108c SS |
9547 | } |
9548 | ||
08388c79 DE |
9549 | static int |
9550 | remote_search_memory (struct target_ops* ops, | |
9551 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9552 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9553 | CORE_ADDR *found_addrp) | |
9554 | { | |
f5656ead | 9555 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
9556 | struct remote_state *rs = get_remote_state (); |
9557 | int max_size = get_memory_write_packet_size (); | |
9558 | struct packet_config *packet = | |
9559 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
9560 | /* Number of packet bytes used to encode the pattern; |
9561 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 9562 | int escaped_pattern_len; |
0df8b418 | 9563 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
9564 | int used_pattern_len; |
9565 | int i; | |
9566 | int found; | |
9567 | ULONGEST found_addr; | |
9568 | ||
9569 | /* Don't go to the target if we don't have to. | |
9570 | This is done before checking packet->support to avoid the possibility that | |
9571 | a success for this edge case means the facility works in general. */ | |
9572 | if (pattern_len > search_space_len) | |
9573 | return 0; | |
9574 | if (pattern_len == 0) | |
9575 | { | |
9576 | *found_addrp = start_addr; | |
9577 | return 1; | |
9578 | } | |
9579 | ||
9580 | /* If we already know the packet isn't supported, fall back to the simple | |
9581 | way of searching memory. */ | |
9582 | ||
4082afcc | 9583 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
9584 | { |
9585 | /* Target doesn't provided special support, fall back and use the | |
9586 | standard support (copy memory and do the search here). */ | |
9587 | return simple_search_memory (ops, start_addr, search_space_len, | |
9588 | pattern, pattern_len, found_addrp); | |
9589 | } | |
9590 | ||
28439a30 PA |
9591 | /* Make sure the remote is pointing at the right process. */ |
9592 | set_general_process (); | |
9593 | ||
08388c79 DE |
9594 | /* Insert header. */ |
9595 | i = snprintf (rs->buf, max_size, | |
9596 | "qSearch:memory:%s;%s;", | |
5af949e3 | 9597 | phex_nz (start_addr, addr_size), |
08388c79 DE |
9598 | phex_nz (search_space_len, sizeof (search_space_len))); |
9599 | max_size -= (i + 1); | |
9600 | ||
9601 | /* Escape as much data as fits into rs->buf. */ | |
9602 | escaped_pattern_len = | |
124e13d9 | 9603 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
08388c79 DE |
9604 | &used_pattern_len, max_size); |
9605 | ||
9606 | /* Bail if the pattern is too large. */ | |
9607 | if (used_pattern_len != pattern_len) | |
9b20d036 | 9608 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
9609 | |
9610 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9611 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9612 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9613 | { | |
9614 | /* The request may not have worked because the command is not | |
9615 | supported. If so, fall back to the simple way. */ | |
9616 | if (packet->support == PACKET_DISABLE) | |
9617 | { | |
9618 | return simple_search_memory (ops, start_addr, search_space_len, | |
9619 | pattern, pattern_len, found_addrp); | |
9620 | } | |
9621 | return -1; | |
9622 | } | |
9623 | ||
9624 | if (rs->buf[0] == '0') | |
9625 | found = 0; | |
9626 | else if (rs->buf[0] == '1') | |
9627 | { | |
9628 | found = 1; | |
9629 | if (rs->buf[1] != ',') | |
10e0fa18 | 9630 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9631 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
9632 | *found_addrp = found_addr; | |
9633 | } | |
9634 | else | |
10e0fa18 | 9635 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
9636 | |
9637 | return found; | |
9638 | } | |
9639 | ||
96baa820 | 9640 | static void |
a30bf1f1 | 9641 | remote_rcmd (struct target_ops *self, const char *command, |
d9fcf2fb | 9642 | struct ui_file *outbuf) |
96baa820 | 9643 | { |
d01949b6 | 9644 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 9645 | char *p = rs->buf; |
96baa820 | 9646 | |
5d93a237 | 9647 | if (!rs->remote_desc) |
8a3fe4f8 | 9648 | error (_("remote rcmd is only available after target open")); |
96baa820 | 9649 | |
23860348 | 9650 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
9651 | if (command == NULL) |
9652 | command = ""; | |
9653 | ||
23860348 | 9654 | /* The query prefix. */ |
2e9f7625 DJ |
9655 | strcpy (rs->buf, "qRcmd,"); |
9656 | p = strchr (rs->buf, '\0'); | |
96baa820 | 9657 | |
3e43a32a MS |
9658 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9659 | > get_remote_packet_size ()) | |
8a3fe4f8 | 9660 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 9661 | |
23860348 | 9662 | /* Encode the actual command. */ |
a30bf1f1 | 9663 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 9664 | |
6d820c5c | 9665 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 9666 | error (_("Communication problem with target.")); |
96baa820 JM |
9667 | |
9668 | /* get/display the response */ | |
9669 | while (1) | |
9670 | { | |
2e9f7625 DJ |
9671 | char *buf; |
9672 | ||
00bf0b85 | 9673 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 9674 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 9675 | rs->buf[0] = '\0'; |
5b37825d PW |
9676 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9677 | { | |
9678 | /* Timeout. Continue to (try to) read responses. | |
9679 | This is better than stopping with an error, assuming the stub | |
9680 | is still executing the (long) monitor command. | |
9681 | If needed, the user can interrupt gdb using C-c, obtaining | |
9682 | an effect similar to stop on timeout. */ | |
9683 | continue; | |
9684 | } | |
2e9f7625 | 9685 | buf = rs->buf; |
96baa820 | 9686 | if (buf[0] == '\0') |
8a3fe4f8 | 9687 | error (_("Target does not support this command.")); |
96baa820 JM |
9688 | if (buf[0] == 'O' && buf[1] != 'K') |
9689 | { | |
23860348 | 9690 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
9691 | continue; |
9692 | } | |
9693 | if (strcmp (buf, "OK") == 0) | |
9694 | break; | |
7be570e7 JM |
9695 | if (strlen (buf) == 3 && buf[0] == 'E' |
9696 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9697 | { | |
8a3fe4f8 | 9698 | error (_("Protocol error with Rcmd")); |
7be570e7 | 9699 | } |
96baa820 JM |
9700 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
9701 | { | |
9702 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 9703 | |
96baa820 JM |
9704 | fputc_unfiltered (c, outbuf); |
9705 | } | |
9706 | break; | |
9707 | } | |
9708 | } | |
9709 | ||
fd79ecee DJ |
9710 | static VEC(mem_region_s) * |
9711 | remote_memory_map (struct target_ops *ops) | |
9712 | { | |
9713 | VEC(mem_region_s) *result = NULL; | |
9714 | char *text = target_read_stralloc (¤t_target, | |
9715 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9716 | ||
9717 | if (text) | |
9718 | { | |
9719 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9720 | |
fd79ecee DJ |
9721 | result = parse_memory_map (text); |
9722 | do_cleanups (back_to); | |
9723 | } | |
9724 | ||
9725 | return result; | |
9726 | } | |
9727 | ||
c906108c | 9728 | static void |
fba45db2 | 9729 | packet_command (char *args, int from_tty) |
c906108c | 9730 | { |
d01949b6 | 9731 | struct remote_state *rs = get_remote_state (); |
c906108c | 9732 | |
5d93a237 | 9733 | if (!rs->remote_desc) |
8a3fe4f8 | 9734 | error (_("command can only be used with remote target")); |
c906108c | 9735 | |
c5aa993b | 9736 | if (!args) |
8a3fe4f8 | 9737 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9738 | |
9739 | puts_filtered ("sending: "); | |
9740 | print_packet (args); | |
9741 | puts_filtered ("\n"); | |
9742 | putpkt (args); | |
9743 | ||
6d820c5c | 9744 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9745 | puts_filtered ("received: "); |
6d820c5c | 9746 | print_packet (rs->buf); |
c906108c SS |
9747 | puts_filtered ("\n"); |
9748 | } | |
9749 | ||
9750 | #if 0 | |
23860348 | 9751 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9752 | |
a14ed312 | 9753 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9754 | |
a14ed312 | 9755 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9756 | |
a14ed312 | 9757 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9758 | |
a14ed312 | 9759 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9760 | |
23860348 | 9761 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9762 | |
a14ed312 | 9763 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9764 | |
23860348 | 9765 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9766 | |
a14ed312 | 9767 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9768 | |
a14ed312 | 9769 | static void init_remote_threadtests (void); |
c906108c | 9770 | |
23860348 | 9771 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9772 | |
9773 | static void | |
fba45db2 | 9774 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9775 | { |
9776 | int sample_thread = SAMPLE_THREAD; | |
9777 | ||
a3f17187 | 9778 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9779 | set_general_thread (sample_thread); |
c906108c SS |
9780 | } |
9781 | ||
9782 | ||
9783 | static void | |
fba45db2 | 9784 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9785 | { |
9786 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 | 9787 | int pid = ptid_get_pid (inferior_ptid); |
ba348170 | 9788 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
c906108c | 9789 | |
79d7f229 | 9790 | if (remote_thread_alive (ptid)) |
c906108c SS |
9791 | printf_filtered ("PASS: Thread alive test\n"); |
9792 | else | |
9793 | printf_filtered ("FAIL: Thread alive test\n"); | |
9794 | } | |
9795 | ||
23860348 | 9796 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9797 | |
9798 | void | |
fba45db2 | 9799 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9800 | { |
9801 | char hexid[20]; | |
9802 | ||
23860348 | 9803 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9804 | hexid[16] = 0; |
9805 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9806 | } | |
9807 | ||
9808 | static void | |
fba45db2 | 9809 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9810 | { |
9811 | int startflag = 1; | |
9812 | threadref nextthread; | |
9813 | int done, result_count; | |
9814 | threadref threadlist[3]; | |
9815 | ||
9816 | printf_filtered ("Remote Threadlist test\n"); | |
9817 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9818 | &result_count, &threadlist[0])) | |
9819 | printf_filtered ("FAIL: threadlist test\n"); | |
9820 | else | |
9821 | { | |
9822 | threadref *scan = threadlist; | |
9823 | threadref *limit = scan + result_count; | |
9824 | ||
9825 | while (scan < limit) | |
9826 | output_threadid (" thread ", scan++); | |
9827 | } | |
9828 | } | |
9829 | ||
9830 | void | |
fba45db2 | 9831 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9832 | { |
9833 | output_threadid ("Threadid: ", &info->threadid); | |
9834 | printf_filtered ("Name: %s\n ", info->shortname); | |
9835 | printf_filtered ("State: %s\n", info->display); | |
9836 | printf_filtered ("other: %s\n\n", info->more_display); | |
9837 | } | |
9838 | ||
9839 | int | |
fba45db2 | 9840 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9841 | { |
9842 | int result; | |
9843 | int set; | |
9844 | struct gdb_ext_thread_info threadinfo; | |
9845 | ||
9846 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9847 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9848 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9849 | display_thread_info (&threadinfo); | |
9850 | return result; | |
9851 | } | |
9852 | ||
9853 | static void | |
fba45db2 | 9854 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9855 | { |
9856 | int athread = SAMPLE_THREAD; | |
9857 | threadref thread; | |
9858 | int set; | |
9859 | ||
9860 | int_to_threadref (&thread, athread); | |
9861 | printf_filtered ("Remote Threadinfo test\n"); | |
9862 | if (!get_and_display_threadinfo (&thread)) | |
9863 | printf_filtered ("FAIL cannot get thread info\n"); | |
9864 | } | |
9865 | ||
9866 | static int | |
fba45db2 | 9867 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9868 | { |
9869 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9870 | return get_and_display_threadinfo (ref); | |
9871 | } | |
9872 | ||
9873 | static void | |
fba45db2 | 9874 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9875 | { |
9876 | printf_filtered ("Remote Threadlist update test\n"); | |
9877 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9878 | } | |
9879 | ||
9880 | static void | |
9881 | init_remote_threadtests (void) | |
9882 | { | |
3e43a32a MS |
9883 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9884 | _("Fetch and print the remote list of " | |
9885 | "thread identifiers, one pkt only")); | |
c906108c | 9886 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9887 | _("Fetch and display info about one thread")); |
c906108c | 9888 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9889 | _("Test setting to a different thread")); |
c906108c | 9890 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9891 | _("Iterate through updating all remote thread info")); |
c906108c | 9892 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9893 | _(" Remote thread alive test ")); |
c906108c SS |
9894 | } |
9895 | ||
9896 | #endif /* 0 */ | |
9897 | ||
f3fb8c85 MS |
9898 | /* Convert a thread ID to a string. Returns the string in a static |
9899 | buffer. */ | |
9900 | ||
9901 | static char * | |
117de6a9 | 9902 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9903 | { |
79d7f229 | 9904 | static char buf[64]; |
82f73884 | 9905 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9906 | |
7cee1e54 PA |
9907 | if (ptid_equal (ptid, null_ptid)) |
9908 | return normal_pid_to_str (ptid); | |
9909 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9910 | { |
9911 | /* Printing an inferior target id. */ | |
9912 | ||
9913 | /* When multi-process extensions are off, there's no way in the | |
9914 | remote protocol to know the remote process id, if there's any | |
9915 | at all. There's one exception --- when we're connected with | |
9916 | target extended-remote, and we manually attached to a process | |
9917 | with "attach PID". We don't record anywhere a flag that | |
9918 | allows us to distinguish that case from the case of | |
9919 | connecting with extended-remote and the stub already being | |
9920 | attached to a process, and reporting yes to qAttached, hence | |
9921 | no smart special casing here. */ | |
9922 | if (!remote_multi_process_p (rs)) | |
9923 | { | |
9924 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9925 | return buf; | |
9926 | } | |
9927 | ||
9928 | return normal_pid_to_str (ptid); | |
82f73884 | 9929 | } |
ecd0ada5 | 9930 | else |
79d7f229 | 9931 | { |
ecd0ada5 PA |
9932 | if (ptid_equal (magic_null_ptid, ptid)) |
9933 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9934 | else if (rs->extended && remote_multi_process_p (rs)) |
de0d863e DB |
9935 | if (ptid_get_lwp (ptid) == 0) |
9936 | return normal_pid_to_str (ptid); | |
9937 | else | |
9938 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
9939 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
ecd0ada5 PA |
9940 | else |
9941 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
ba348170 | 9942 | ptid_get_lwp (ptid)); |
79d7f229 PA |
9943 | return buf; |
9944 | } | |
f3fb8c85 MS |
9945 | } |
9946 | ||
38691318 KB |
9947 | /* Get the address of the thread local variable in OBJFILE which is |
9948 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9949 | ||
9950 | static CORE_ADDR | |
117de6a9 PA |
9951 | remote_get_thread_local_address (struct target_ops *ops, |
9952 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9953 | { |
4082afcc | 9954 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
9955 | { |
9956 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9957 | char *p = rs->buf; |
82f73884 | 9958 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9959 | enum packet_result result; |
38691318 KB |
9960 | |
9961 | strcpy (p, "qGetTLSAddr:"); | |
9962 | p += strlen (p); | |
82f73884 | 9963 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9964 | *p++ = ','; |
9965 | p += hexnumstr (p, offset); | |
9966 | *p++ = ','; | |
9967 | p += hexnumstr (p, lm); | |
9968 | *p++ = '\0'; | |
9969 | ||
6d820c5c DJ |
9970 | putpkt (rs->buf); |
9971 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9972 | result = packet_ok (rs->buf, |
9973 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9974 | if (result == PACKET_OK) |
38691318 KB |
9975 | { |
9976 | ULONGEST result; | |
9977 | ||
6d820c5c | 9978 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9979 | return result; |
9980 | } | |
571dd617 | 9981 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9982 | throw_error (TLS_GENERIC_ERROR, |
9983 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9984 | else |
109c3e39 AC |
9985 | throw_error (TLS_GENERIC_ERROR, |
9986 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9987 | } |
9988 | else | |
109c3e39 AC |
9989 | throw_error (TLS_GENERIC_ERROR, |
9990 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9991 | /* Not reached. */ |
9992 | return 0; | |
9993 | } | |
9994 | ||
711e434b PM |
9995 | /* Provide thread local base, i.e. Thread Information Block address. |
9996 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9997 | ||
70221824 | 9998 | static int |
bd7ae0f5 | 9999 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
711e434b | 10000 | { |
4082afcc | 10001 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
10002 | { |
10003 | struct remote_state *rs = get_remote_state (); | |
10004 | char *p = rs->buf; | |
10005 | char *endp = rs->buf + get_remote_packet_size (); | |
10006 | enum packet_result result; | |
10007 | ||
10008 | strcpy (p, "qGetTIBAddr:"); | |
10009 | p += strlen (p); | |
10010 | p = write_ptid (p, endp, ptid); | |
10011 | *p++ = '\0'; | |
10012 | ||
10013 | putpkt (rs->buf); | |
10014 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10015 | result = packet_ok (rs->buf, | |
10016 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10017 | if (result == PACKET_OK) | |
10018 | { | |
10019 | ULONGEST result; | |
10020 | ||
10021 | unpack_varlen_hex (rs->buf, &result); | |
10022 | if (addr) | |
10023 | *addr = (CORE_ADDR) result; | |
10024 | return 1; | |
10025 | } | |
10026 | else if (result == PACKET_UNKNOWN) | |
10027 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10028 | else | |
10029 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10030 | } | |
10031 | else | |
10032 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10033 | /* Not reached. */ | |
10034 | return 0; | |
10035 | } | |
10036 | ||
29709017 DJ |
10037 | /* Support for inferring a target description based on the current |
10038 | architecture and the size of a 'g' packet. While the 'g' packet | |
10039 | can have any size (since optional registers can be left off the | |
10040 | end), some sizes are easily recognizable given knowledge of the | |
10041 | approximate architecture. */ | |
10042 | ||
10043 | struct remote_g_packet_guess | |
10044 | { | |
10045 | int bytes; | |
10046 | const struct target_desc *tdesc; | |
10047 | }; | |
10048 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10049 | DEF_VEC_O(remote_g_packet_guess_s); | |
10050 | ||
10051 | struct remote_g_packet_data | |
10052 | { | |
10053 | VEC(remote_g_packet_guess_s) *guesses; | |
10054 | }; | |
10055 | ||
10056 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10057 | ||
10058 | static void * | |
10059 | remote_g_packet_data_init (struct obstack *obstack) | |
10060 | { | |
10061 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10062 | } | |
10063 | ||
10064 | void | |
10065 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10066 | const struct target_desc *tdesc) | |
10067 | { | |
10068 | struct remote_g_packet_data *data | |
10069 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
10070 | struct remote_g_packet_guess new_guess, *guess; | |
10071 | int ix; | |
10072 | ||
10073 | gdb_assert (tdesc != NULL); | |
10074 | ||
10075 | for (ix = 0; | |
10076 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10077 | ix++) | |
10078 | if (guess->bytes == bytes) | |
10079 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 10080 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
10081 | bytes); |
10082 | ||
10083 | new_guess.bytes = bytes; | |
10084 | new_guess.tdesc = tdesc; | |
10085 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10086 | } | |
10087 | ||
d962ef82 DJ |
10088 | /* Return 1 if remote_read_description would do anything on this target |
10089 | and architecture, 0 otherwise. */ | |
10090 | ||
10091 | static int | |
10092 | remote_read_description_p (struct target_ops *target) | |
10093 | { | |
10094 | struct remote_g_packet_data *data | |
f5656ead | 10095 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
10096 | |
10097 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10098 | return 1; | |
10099 | ||
10100 | return 0; | |
10101 | } | |
10102 | ||
29709017 DJ |
10103 | static const struct target_desc * |
10104 | remote_read_description (struct target_ops *target) | |
10105 | { | |
10106 | struct remote_g_packet_data *data | |
f5656ead | 10107 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 10108 | |
d962ef82 DJ |
10109 | /* Do not try this during initial connection, when we do not know |
10110 | whether there is a running but stopped thread. */ | |
10111 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
2117c711 | 10112 | return target->beneath->to_read_description (target->beneath); |
d962ef82 | 10113 | |
29709017 DJ |
10114 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
10115 | { | |
10116 | struct remote_g_packet_guess *guess; | |
10117 | int ix; | |
10118 | int bytes = send_g_packet (); | |
10119 | ||
10120 | for (ix = 0; | |
10121 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10122 | ix++) | |
10123 | if (guess->bytes == bytes) | |
10124 | return guess->tdesc; | |
10125 | ||
10126 | /* We discard the g packet. A minor optimization would be to | |
10127 | hold on to it, and fill the register cache once we have selected | |
10128 | an architecture, but it's too tricky to do safely. */ | |
10129 | } | |
10130 | ||
2117c711 | 10131 | return target->beneath->to_read_description (target->beneath); |
29709017 DJ |
10132 | } |
10133 | ||
a6b151f1 DJ |
10134 | /* Remote file transfer support. This is host-initiated I/O, not |
10135 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10136 | ||
10137 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10138 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10139 | decrease *LEFT. Otherwise raise an error. */ | |
10140 | ||
10141 | static void | |
10142 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10143 | { | |
10144 | int len = strlen (string); | |
10145 | ||
10146 | if (len > *left) | |
10147 | error (_("Packet too long for target.")); | |
10148 | ||
10149 | memcpy (*buffer, string, len); | |
10150 | *buffer += len; | |
10151 | *left -= len; | |
10152 | ||
10153 | /* NUL-terminate the buffer as a convenience, if there is | |
10154 | room. */ | |
10155 | if (*left) | |
10156 | **buffer = '\0'; | |
10157 | } | |
10158 | ||
10159 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10160 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10161 | decrease *LEFT. Otherwise raise an error. */ | |
10162 | ||
10163 | static void | |
10164 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10165 | int len) | |
10166 | { | |
10167 | if (2 * len > *left) | |
10168 | error (_("Packet too long for target.")); | |
10169 | ||
10170 | bin2hex (bytes, *buffer, len); | |
10171 | *buffer += 2 * len; | |
10172 | *left -= 2 * len; | |
10173 | ||
10174 | /* NUL-terminate the buffer as a convenience, if there is | |
10175 | room. */ | |
10176 | if (*left) | |
10177 | **buffer = '\0'; | |
10178 | } | |
10179 | ||
10180 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10181 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10182 | decrease *LEFT. Otherwise raise an error. */ | |
10183 | ||
10184 | static void | |
10185 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10186 | { | |
10187 | int len = hexnumlen (value); | |
10188 | ||
10189 | if (len > *left) | |
10190 | error (_("Packet too long for target.")); | |
10191 | ||
10192 | hexnumstr (*buffer, value); | |
10193 | *buffer += len; | |
10194 | *left -= len; | |
10195 | ||
10196 | /* NUL-terminate the buffer as a convenience, if there is | |
10197 | room. */ | |
10198 | if (*left) | |
10199 | **buffer = '\0'; | |
10200 | } | |
10201 | ||
10202 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10203 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10204 | was included, and *ATTACHMENT to point to the start of the annex | |
10205 | if any. The length of the packet isn't needed here; there may | |
10206 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10207 | ||
10208 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10209 | -1 is returned, the other variables may not be initialized. */ | |
10210 | ||
10211 | static int | |
10212 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10213 | int *remote_errno, char **attachment) | |
10214 | { | |
10215 | char *p, *p2; | |
10216 | ||
10217 | *remote_errno = 0; | |
10218 | *attachment = NULL; | |
10219 | ||
10220 | if (buffer[0] != 'F') | |
10221 | return -1; | |
10222 | ||
10223 | errno = 0; | |
10224 | *retcode = strtol (&buffer[1], &p, 16); | |
10225 | if (errno != 0 || p == &buffer[1]) | |
10226 | return -1; | |
10227 | ||
10228 | /* Check for ",errno". */ | |
10229 | if (*p == ',') | |
10230 | { | |
10231 | errno = 0; | |
10232 | *remote_errno = strtol (p + 1, &p2, 16); | |
10233 | if (errno != 0 || p + 1 == p2) | |
10234 | return -1; | |
10235 | p = p2; | |
10236 | } | |
10237 | ||
10238 | /* Check for ";attachment". If there is no attachment, the | |
10239 | packet should end here. */ | |
10240 | if (*p == ';') | |
10241 | { | |
10242 | *attachment = p + 1; | |
10243 | return 0; | |
10244 | } | |
10245 | else if (*p == '\0') | |
10246 | return 0; | |
10247 | else | |
10248 | return -1; | |
10249 | } | |
10250 | ||
10251 | /* Send a prepared I/O packet to the target and read its response. | |
10252 | The prepared packet is in the global RS->BUF before this function | |
10253 | is called, and the answer is there when we return. | |
10254 | ||
10255 | COMMAND_BYTES is the length of the request to send, which may include | |
10256 | binary data. WHICH_PACKET is the packet configuration to check | |
10257 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10258 | is set to the error number and -1 is returned. Otherwise the value | |
10259 | returned by the function is returned. | |
10260 | ||
10261 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10262 | attachment is expected; an error will be reported if there's a | |
10263 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10264 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10265 | attachment's length. */ | |
10266 | ||
10267 | static int | |
10268 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10269 | int *remote_errno, char **attachment, | |
10270 | int *attachment_len) | |
10271 | { | |
10272 | struct remote_state *rs = get_remote_state (); | |
10273 | int ret, bytes_read; | |
10274 | char *attachment_tmp; | |
10275 | ||
5d93a237 | 10276 | if (!rs->remote_desc |
4082afcc | 10277 | || packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
10278 | { |
10279 | *remote_errno = FILEIO_ENOSYS; | |
10280 | return -1; | |
10281 | } | |
10282 | ||
10283 | putpkt_binary (rs->buf, command_bytes); | |
10284 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10285 | ||
10286 | /* If it timed out, something is wrong. Don't try to parse the | |
10287 | buffer. */ | |
10288 | if (bytes_read < 0) | |
10289 | { | |
10290 | *remote_errno = FILEIO_EINVAL; | |
10291 | return -1; | |
10292 | } | |
10293 | ||
10294 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10295 | { | |
10296 | case PACKET_ERROR: | |
10297 | *remote_errno = FILEIO_EINVAL; | |
10298 | return -1; | |
10299 | case PACKET_UNKNOWN: | |
10300 | *remote_errno = FILEIO_ENOSYS; | |
10301 | return -1; | |
10302 | case PACKET_OK: | |
10303 | break; | |
10304 | } | |
10305 | ||
10306 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10307 | &attachment_tmp)) | |
10308 | { | |
10309 | *remote_errno = FILEIO_EINVAL; | |
10310 | return -1; | |
10311 | } | |
10312 | ||
10313 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10314 | if ((attachment_tmp == NULL && attachment != NULL) | |
10315 | || (attachment_tmp != NULL && attachment == NULL)) | |
10316 | { | |
10317 | *remote_errno = FILEIO_EINVAL; | |
10318 | return -1; | |
10319 | } | |
10320 | ||
10321 | /* If an attachment was found, it must point into the packet buffer; | |
10322 | work out how many bytes there were. */ | |
10323 | if (attachment_tmp != NULL) | |
10324 | { | |
10325 | *attachment = attachment_tmp; | |
10326 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10327 | } | |
10328 | ||
10329 | return ret; | |
10330 | } | |
10331 | ||
15a201c8 GB |
10332 | /* Set the filesystem remote_hostio functions that take FILENAME |
10333 | arguments will use. Return 0 on success, or -1 if an error | |
10334 | occurs (and set *REMOTE_ERRNO). */ | |
10335 | ||
10336 | static int | |
10337 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10338 | { | |
10339 | struct remote_state *rs = get_remote_state (); | |
10340 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10341 | char *p = rs->buf; | |
10342 | int left = get_remote_packet_size () - 1; | |
10343 | char arg[9]; | |
10344 | int ret; | |
10345 | ||
10346 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10347 | return 0; | |
10348 | ||
10349 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10350 | return 0; | |
10351 | ||
10352 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10353 | ||
10354 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10355 | remote_buffer_add_string (&p, &left, arg); | |
10356 | ||
10357 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10358 | remote_errno, NULL, NULL); | |
10359 | ||
10360 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10361 | return 0; | |
10362 | ||
10363 | if (ret == 0) | |
10364 | rs->fs_pid = required_pid; | |
10365 | ||
10366 | return ret; | |
10367 | } | |
10368 | ||
12e2a5fd | 10369 | /* Implementation of to_fileio_open. */ |
a6b151f1 DJ |
10370 | |
10371 | static int | |
cd897586 | 10372 | remote_hostio_open (struct target_ops *self, |
07c138c8 GB |
10373 | struct inferior *inf, const char *filename, |
10374 | int flags, int mode, int *remote_errno) | |
a6b151f1 DJ |
10375 | { |
10376 | struct remote_state *rs = get_remote_state (); | |
10377 | char *p = rs->buf; | |
10378 | int left = get_remote_packet_size () - 1; | |
10379 | ||
15a201c8 GB |
10380 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10381 | return -1; | |
10382 | ||
a6b151f1 DJ |
10383 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10384 | ||
10385 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10386 | strlen (filename)); | |
10387 | remote_buffer_add_string (&p, &left, ","); | |
10388 | ||
10389 | remote_buffer_add_int (&p, &left, flags); | |
10390 | remote_buffer_add_string (&p, &left, ","); | |
10391 | ||
10392 | remote_buffer_add_int (&p, &left, mode); | |
10393 | ||
10394 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10395 | remote_errno, NULL, NULL); | |
10396 | } | |
10397 | ||
12e2a5fd | 10398 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 DJ |
10399 | |
10400 | static int | |
0d866f62 TT |
10401 | remote_hostio_pwrite (struct target_ops *self, |
10402 | int fd, const gdb_byte *write_buf, int len, | |
a6b151f1 DJ |
10403 | ULONGEST offset, int *remote_errno) |
10404 | { | |
10405 | struct remote_state *rs = get_remote_state (); | |
10406 | char *p = rs->buf; | |
10407 | int left = get_remote_packet_size (); | |
10408 | int out_len; | |
10409 | ||
10410 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
10411 | ||
10412 | remote_buffer_add_int (&p, &left, fd); | |
10413 | remote_buffer_add_string (&p, &left, ","); | |
10414 | ||
10415 | remote_buffer_add_int (&p, &left, offset); | |
10416 | remote_buffer_add_string (&p, &left, ","); | |
10417 | ||
124e13d9 | 10418 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
a6b151f1 DJ |
10419 | get_remote_packet_size () - (p - rs->buf)); |
10420 | ||
10421 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10422 | remote_errno, NULL, NULL); | |
10423 | } | |
10424 | ||
12e2a5fd | 10425 | /* Implementation of to_fileio_pread. */ |
a6b151f1 DJ |
10426 | |
10427 | static int | |
a3be983c TT |
10428 | remote_hostio_pread (struct target_ops *self, |
10429 | int fd, gdb_byte *read_buf, int len, | |
a6b151f1 DJ |
10430 | ULONGEST offset, int *remote_errno) |
10431 | { | |
10432 | struct remote_state *rs = get_remote_state (); | |
10433 | char *p = rs->buf; | |
10434 | char *attachment; | |
10435 | int left = get_remote_packet_size (); | |
10436 | int ret, attachment_len; | |
10437 | int read_len; | |
10438 | ||
10439 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10440 | ||
10441 | remote_buffer_add_int (&p, &left, fd); | |
10442 | remote_buffer_add_string (&p, &left, ","); | |
10443 | ||
10444 | remote_buffer_add_int (&p, &left, len); | |
10445 | remote_buffer_add_string (&p, &left, ","); | |
10446 | ||
10447 | remote_buffer_add_int (&p, &left, offset); | |
10448 | ||
10449 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10450 | remote_errno, &attachment, | |
10451 | &attachment_len); | |
10452 | ||
10453 | if (ret < 0) | |
10454 | return ret; | |
10455 | ||
bc20a4af | 10456 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
10457 | read_buf, len); |
10458 | if (read_len != ret) | |
10459 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10460 | ||
10461 | return ret; | |
10462 | } | |
10463 | ||
12e2a5fd | 10464 | /* Implementation of to_fileio_close. */ |
a6b151f1 DJ |
10465 | |
10466 | static int | |
df39ea25 | 10467 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
a6b151f1 DJ |
10468 | { |
10469 | struct remote_state *rs = get_remote_state (); | |
10470 | char *p = rs->buf; | |
10471 | int left = get_remote_packet_size () - 1; | |
10472 | ||
10473 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
10474 | ||
10475 | remote_buffer_add_int (&p, &left, fd); | |
10476 | ||
10477 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10478 | remote_errno, NULL, NULL); | |
10479 | } | |
10480 | ||
12e2a5fd | 10481 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 DJ |
10482 | |
10483 | static int | |
dbbca37d | 10484 | remote_hostio_unlink (struct target_ops *self, |
07c138c8 GB |
10485 | struct inferior *inf, const char *filename, |
10486 | int *remote_errno) | |
a6b151f1 DJ |
10487 | { |
10488 | struct remote_state *rs = get_remote_state (); | |
10489 | char *p = rs->buf; | |
10490 | int left = get_remote_packet_size () - 1; | |
10491 | ||
15a201c8 GB |
10492 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10493 | return -1; | |
10494 | ||
a6b151f1 DJ |
10495 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10496 | ||
10497 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10498 | strlen (filename)); | |
10499 | ||
10500 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10501 | remote_errno, NULL, NULL); | |
10502 | } | |
10503 | ||
12e2a5fd | 10504 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 UW |
10505 | |
10506 | static char * | |
fab5aa7c | 10507 | remote_hostio_readlink (struct target_ops *self, |
07c138c8 GB |
10508 | struct inferior *inf, const char *filename, |
10509 | int *remote_errno) | |
b9e7b9c3 UW |
10510 | { |
10511 | struct remote_state *rs = get_remote_state (); | |
10512 | char *p = rs->buf; | |
10513 | char *attachment; | |
10514 | int left = get_remote_packet_size (); | |
10515 | int len, attachment_len; | |
10516 | int read_len; | |
10517 | char *ret; | |
10518 | ||
15a201c8 GB |
10519 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10520 | return NULL; | |
10521 | ||
b9e7b9c3 UW |
10522 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10523 | ||
10524 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10525 | strlen (filename)); | |
10526 | ||
10527 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
10528 | remote_errno, &attachment, | |
10529 | &attachment_len); | |
10530 | ||
10531 | if (len < 0) | |
10532 | return NULL; | |
10533 | ||
10534 | ret = xmalloc (len + 1); | |
10535 | ||
bc20a4af PA |
10536 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10537 | (gdb_byte *) ret, len); | |
b9e7b9c3 UW |
10538 | if (read_len != len) |
10539 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10540 | ||
10541 | ret[len] = '\0'; | |
10542 | return ret; | |
10543 | } | |
10544 | ||
12e2a5fd | 10545 | /* Implementation of to_fileio_fstat. */ |
0a93529c GB |
10546 | |
10547 | static int | |
10548 | remote_hostio_fstat (struct target_ops *self, | |
10549 | int fd, struct stat *st, | |
10550 | int *remote_errno) | |
10551 | { | |
10552 | struct remote_state *rs = get_remote_state (); | |
10553 | char *p = rs->buf; | |
10554 | int left = get_remote_packet_size (); | |
10555 | int attachment_len, ret; | |
10556 | char *attachment; | |
10557 | struct fio_stat fst; | |
10558 | int read_len; | |
10559 | ||
464b0089 GB |
10560 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
10561 | ||
10562 | remote_buffer_add_int (&p, &left, fd); | |
10563 | ||
10564 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10565 | remote_errno, &attachment, | |
10566 | &attachment_len); | |
10567 | if (ret < 0) | |
0a93529c | 10568 | { |
464b0089 GB |
10569 | if (*remote_errno != FILEIO_ENOSYS) |
10570 | return ret; | |
10571 | ||
0a93529c GB |
10572 | /* Strictly we should return -1, ENOSYS here, but when |
10573 | "set sysroot remote:" was implemented in August 2008 | |
10574 | BFD's need for a stat function was sidestepped with | |
10575 | this hack. This was not remedied until March 2015 | |
10576 | so we retain the previous behavior to avoid breaking | |
10577 | compatibility. | |
10578 | ||
10579 | Note that the memset is a March 2015 addition; older | |
10580 | GDBs set st_size *and nothing else* so the structure | |
10581 | would have garbage in all other fields. This might | |
10582 | break something but retaining the previous behavior | |
10583 | here would be just too wrong. */ | |
10584 | ||
10585 | memset (st, 0, sizeof (struct stat)); | |
10586 | st->st_size = INT_MAX; | |
10587 | return 0; | |
10588 | } | |
10589 | ||
0a93529c GB |
10590 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
10591 | (gdb_byte *) &fst, sizeof (fst)); | |
10592 | ||
10593 | if (read_len != ret) | |
10594 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10595 | ||
10596 | if (read_len != sizeof (fst)) | |
10597 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10598 | read_len, (int) sizeof (fst)); | |
10599 | ||
10600 | remote_fileio_to_host_stat (&fst, st); | |
10601 | ||
10602 | return 0; | |
10603 | } | |
10604 | ||
12e2a5fd | 10605 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 GB |
10606 | |
10607 | static int | |
10608 | remote_filesystem_is_local (struct target_ops *self) | |
10609 | { | |
10610 | /* Valgrind GDB presents itself as a remote target but works | |
10611 | on the local filesystem: it does not implement remote get | |
10612 | and users are not expected to set a sysroot. To handle | |
10613 | this case we treat the remote filesystem as local if the | |
10614 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
10615 | does not support vFile:open. */ | |
a3be80c3 | 10616 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
10617 | { |
10618 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
10619 | ||
10620 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
10621 | { | |
10622 | int fd, remote_errno; | |
10623 | ||
10624 | /* Try opening a file to probe support. The supplied | |
10625 | filename is irrelevant, we only care about whether | |
10626 | the stub recognizes the packet or not. */ | |
07c138c8 | 10627 | fd = remote_hostio_open (self, NULL, "just probing", |
e3dd7556 GB |
10628 | FILEIO_O_RDONLY, 0700, |
10629 | &remote_errno); | |
10630 | ||
10631 | if (fd >= 0) | |
10632 | remote_hostio_close (self, fd, &remote_errno); | |
10633 | ||
10634 | ps = packet_support (PACKET_vFile_open); | |
10635 | } | |
10636 | ||
10637 | if (ps == PACKET_DISABLE) | |
10638 | { | |
10639 | static int warning_issued = 0; | |
10640 | ||
10641 | if (!warning_issued) | |
10642 | { | |
10643 | warning (_("remote target does not support file" | |
10644 | " transfer, attempting to access files" | |
10645 | " from local filesystem.")); | |
10646 | warning_issued = 1; | |
10647 | } | |
10648 | ||
10649 | return 1; | |
10650 | } | |
10651 | } | |
10652 | ||
10653 | return 0; | |
10654 | } | |
10655 | ||
a6b151f1 DJ |
10656 | static int |
10657 | remote_fileio_errno_to_host (int errnum) | |
10658 | { | |
10659 | switch (errnum) | |
10660 | { | |
10661 | case FILEIO_EPERM: | |
10662 | return EPERM; | |
10663 | case FILEIO_ENOENT: | |
10664 | return ENOENT; | |
10665 | case FILEIO_EINTR: | |
10666 | return EINTR; | |
10667 | case FILEIO_EIO: | |
10668 | return EIO; | |
10669 | case FILEIO_EBADF: | |
10670 | return EBADF; | |
10671 | case FILEIO_EACCES: | |
10672 | return EACCES; | |
10673 | case FILEIO_EFAULT: | |
10674 | return EFAULT; | |
10675 | case FILEIO_EBUSY: | |
10676 | return EBUSY; | |
10677 | case FILEIO_EEXIST: | |
10678 | return EEXIST; | |
10679 | case FILEIO_ENODEV: | |
10680 | return ENODEV; | |
10681 | case FILEIO_ENOTDIR: | |
10682 | return ENOTDIR; | |
10683 | case FILEIO_EISDIR: | |
10684 | return EISDIR; | |
10685 | case FILEIO_EINVAL: | |
10686 | return EINVAL; | |
10687 | case FILEIO_ENFILE: | |
10688 | return ENFILE; | |
10689 | case FILEIO_EMFILE: | |
10690 | return EMFILE; | |
10691 | case FILEIO_EFBIG: | |
10692 | return EFBIG; | |
10693 | case FILEIO_ENOSPC: | |
10694 | return ENOSPC; | |
10695 | case FILEIO_ESPIPE: | |
10696 | return ESPIPE; | |
10697 | case FILEIO_EROFS: | |
10698 | return EROFS; | |
10699 | case FILEIO_ENOSYS: | |
10700 | return ENOSYS; | |
10701 | case FILEIO_ENAMETOOLONG: | |
10702 | return ENAMETOOLONG; | |
10703 | } | |
10704 | return -1; | |
10705 | } | |
10706 | ||
10707 | static char * | |
10708 | remote_hostio_error (int errnum) | |
10709 | { | |
10710 | int host_error = remote_fileio_errno_to_host (errnum); | |
10711 | ||
10712 | if (host_error == -1) | |
10713 | error (_("Unknown remote I/O error %d"), errnum); | |
10714 | else | |
10715 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10716 | } | |
10717 | ||
a6b151f1 DJ |
10718 | static void |
10719 | remote_hostio_close_cleanup (void *opaque) | |
10720 | { | |
10721 | int fd = *(int *) opaque; | |
10722 | int remote_errno; | |
10723 | ||
df39ea25 | 10724 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
a6b151f1 DJ |
10725 | } |
10726 | ||
10727 | void | |
10728 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10729 | { | |
10730 | struct cleanup *back_to, *close_cleanup; | |
10731 | int retcode, fd, remote_errno, bytes, io_size; | |
10732 | FILE *file; | |
10733 | gdb_byte *buffer; | |
10734 | int bytes_in_buffer; | |
10735 | int saw_eof; | |
10736 | ULONGEST offset; | |
5d93a237 | 10737 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10738 | |
5d93a237 | 10739 | if (!rs->remote_desc) |
a6b151f1 DJ |
10740 | error (_("command can only be used with remote target")); |
10741 | ||
614c279d | 10742 | file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
10743 | if (file == NULL) |
10744 | perror_with_name (local_file); | |
7c8a8b04 | 10745 | back_to = make_cleanup_fclose (file); |
a6b151f1 | 10746 | |
07c138c8 | 10747 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 10748 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT |
a6b151f1 DJ |
10749 | | FILEIO_O_TRUNC), |
10750 | 0700, &remote_errno); | |
10751 | if (fd == -1) | |
10752 | remote_hostio_error (remote_errno); | |
10753 | ||
10754 | /* Send up to this many bytes at once. They won't all fit in the | |
10755 | remote packet limit, so we'll transfer slightly fewer. */ | |
10756 | io_size = get_remote_packet_size (); | |
10757 | buffer = xmalloc (io_size); | |
10758 | make_cleanup (xfree, buffer); | |
10759 | ||
10760 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10761 | ||
10762 | bytes_in_buffer = 0; | |
10763 | saw_eof = 0; | |
10764 | offset = 0; | |
10765 | while (bytes_in_buffer || !saw_eof) | |
10766 | { | |
10767 | if (!saw_eof) | |
10768 | { | |
3e43a32a MS |
10769 | bytes = fread (buffer + bytes_in_buffer, 1, |
10770 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
10771 | file); |
10772 | if (bytes == 0) | |
10773 | { | |
10774 | if (ferror (file)) | |
10775 | error (_("Error reading %s."), local_file); | |
10776 | else | |
10777 | { | |
10778 | /* EOF. Unless there is something still in the | |
10779 | buffer from the last iteration, we are done. */ | |
10780 | saw_eof = 1; | |
10781 | if (bytes_in_buffer == 0) | |
10782 | break; | |
10783 | } | |
10784 | } | |
10785 | } | |
10786 | else | |
10787 | bytes = 0; | |
10788 | ||
10789 | bytes += bytes_in_buffer; | |
10790 | bytes_in_buffer = 0; | |
10791 | ||
0d866f62 TT |
10792 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10793 | fd, buffer, bytes, | |
3e43a32a | 10794 | offset, &remote_errno); |
a6b151f1 DJ |
10795 | |
10796 | if (retcode < 0) | |
10797 | remote_hostio_error (remote_errno); | |
10798 | else if (retcode == 0) | |
10799 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10800 | else if (retcode < bytes) | |
10801 | { | |
10802 | /* Short write. Save the rest of the read data for the next | |
10803 | write. */ | |
10804 | bytes_in_buffer = bytes - retcode; | |
10805 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10806 | } | |
10807 | ||
10808 | offset += retcode; | |
10809 | } | |
10810 | ||
10811 | discard_cleanups (close_cleanup); | |
df39ea25 | 10812 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10813 | remote_hostio_error (remote_errno); |
10814 | ||
10815 | if (from_tty) | |
10816 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10817 | do_cleanups (back_to); | |
10818 | } | |
10819 | ||
10820 | void | |
10821 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10822 | { | |
10823 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10824 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10825 | FILE *file; |
10826 | gdb_byte *buffer; | |
10827 | ULONGEST offset; | |
5d93a237 | 10828 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10829 | |
5d93a237 | 10830 | if (!rs->remote_desc) |
a6b151f1 DJ |
10831 | error (_("command can only be used with remote target")); |
10832 | ||
07c138c8 | 10833 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
cd897586 | 10834 | remote_file, FILEIO_O_RDONLY, 0, &remote_errno); |
a6b151f1 DJ |
10835 | if (fd == -1) |
10836 | remote_hostio_error (remote_errno); | |
10837 | ||
614c279d | 10838 | file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
10839 | if (file == NULL) |
10840 | perror_with_name (local_file); | |
7c8a8b04 | 10841 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10842 | |
10843 | /* Send up to this many bytes at once. They won't all fit in the | |
10844 | remote packet limit, so we'll transfer slightly fewer. */ | |
10845 | io_size = get_remote_packet_size (); | |
10846 | buffer = xmalloc (io_size); | |
10847 | make_cleanup (xfree, buffer); | |
10848 | ||
10849 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10850 | ||
10851 | offset = 0; | |
10852 | while (1) | |
10853 | { | |
a3be983c TT |
10854 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10855 | fd, buffer, io_size, offset, &remote_errno); | |
a6b151f1 DJ |
10856 | if (bytes == 0) |
10857 | /* Success, but no bytes, means end-of-file. */ | |
10858 | break; | |
10859 | if (bytes == -1) | |
10860 | remote_hostio_error (remote_errno); | |
10861 | ||
10862 | offset += bytes; | |
10863 | ||
10864 | bytes = fwrite (buffer, 1, bytes, file); | |
10865 | if (bytes == 0) | |
10866 | perror_with_name (local_file); | |
10867 | } | |
10868 | ||
10869 | discard_cleanups (close_cleanup); | |
df39ea25 | 10870 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
a6b151f1 DJ |
10871 | remote_hostio_error (remote_errno); |
10872 | ||
10873 | if (from_tty) | |
10874 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10875 | do_cleanups (back_to); | |
10876 | } | |
10877 | ||
10878 | void | |
10879 | remote_file_delete (const char *remote_file, int from_tty) | |
10880 | { | |
10881 | int retcode, remote_errno; | |
5d93a237 | 10882 | struct remote_state *rs = get_remote_state (); |
a6b151f1 | 10883 | |
5d93a237 | 10884 | if (!rs->remote_desc) |
a6b151f1 DJ |
10885 | error (_("command can only be used with remote target")); |
10886 | ||
dbbca37d | 10887 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
07c138c8 | 10888 | NULL, remote_file, &remote_errno); |
a6b151f1 DJ |
10889 | if (retcode == -1) |
10890 | remote_hostio_error (remote_errno); | |
10891 | ||
10892 | if (from_tty) | |
10893 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10894 | } | |
10895 | ||
10896 | static void | |
10897 | remote_put_command (char *args, int from_tty) | |
10898 | { | |
10899 | struct cleanup *back_to; | |
10900 | char **argv; | |
10901 | ||
d1a41061 PP |
10902 | if (args == NULL) |
10903 | error_no_arg (_("file to put")); | |
10904 | ||
10905 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10906 | back_to = make_cleanup_freeargv (argv); |
10907 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10908 | error (_("Invalid parameters to remote put")); | |
10909 | ||
10910 | remote_file_put (argv[0], argv[1], from_tty); | |
10911 | ||
10912 | do_cleanups (back_to); | |
10913 | } | |
10914 | ||
10915 | static void | |
10916 | remote_get_command (char *args, int from_tty) | |
10917 | { | |
10918 | struct cleanup *back_to; | |
10919 | char **argv; | |
10920 | ||
d1a41061 PP |
10921 | if (args == NULL) |
10922 | error_no_arg (_("file to get")); | |
10923 | ||
10924 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10925 | back_to = make_cleanup_freeargv (argv); |
10926 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10927 | error (_("Invalid parameters to remote get")); | |
10928 | ||
10929 | remote_file_get (argv[0], argv[1], from_tty); | |
10930 | ||
10931 | do_cleanups (back_to); | |
10932 | } | |
10933 | ||
10934 | static void | |
10935 | remote_delete_command (char *args, int from_tty) | |
10936 | { | |
10937 | struct cleanup *back_to; | |
10938 | char **argv; | |
10939 | ||
d1a41061 PP |
10940 | if (args == NULL) |
10941 | error_no_arg (_("file to delete")); | |
10942 | ||
10943 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10944 | back_to = make_cleanup_freeargv (argv); |
10945 | if (argv[0] == NULL || argv[1] != NULL) | |
10946 | error (_("Invalid parameters to remote delete")); | |
10947 | ||
10948 | remote_file_delete (argv[0], from_tty); | |
10949 | ||
10950 | do_cleanups (back_to); | |
10951 | } | |
10952 | ||
10953 | static void | |
10954 | remote_command (char *args, int from_tty) | |
10955 | { | |
635c7e8a | 10956 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
10957 | } |
10958 | ||
b2175913 | 10959 | static int |
19db3e69 | 10960 | remote_can_execute_reverse (struct target_ops *self) |
b2175913 | 10961 | { |
4082afcc PA |
10962 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
10963 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
40ab02ce MS |
10964 | return 1; |
10965 | else | |
10966 | return 0; | |
b2175913 MS |
10967 | } |
10968 | ||
74531fed | 10969 | static int |
2a9a2795 | 10970 | remote_supports_non_stop (struct target_ops *self) |
74531fed PA |
10971 | { |
10972 | return 1; | |
10973 | } | |
10974 | ||
03583c20 | 10975 | static int |
2bfc0540 | 10976 | remote_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
10977 | { |
10978 | /* Only supported in extended mode. */ | |
10979 | return 0; | |
10980 | } | |
10981 | ||
8a305172 | 10982 | static int |
86ce2668 | 10983 | remote_supports_multi_process (struct target_ops *self) |
8a305172 PA |
10984 | { |
10985 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10986 | |
901f9912 UW |
10987 | /* Only extended-remote handles being attached to multiple |
10988 | processes, even though plain remote can use the multi-process | |
10989 | thread id extensions, so that GDB knows the target process's | |
10990 | PID. */ | |
10991 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10992 | } |
10993 | ||
70221824 | 10994 | static int |
782b2b07 SS |
10995 | remote_supports_cond_tracepoints (void) |
10996 | { | |
4082afcc | 10997 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
10998 | } |
10999 | ||
3788aec7 | 11000 | static int |
efcc2da7 | 11001 | remote_supports_cond_breakpoints (struct target_ops *self) |
3788aec7 | 11002 | { |
4082afcc | 11003 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
11004 | } |
11005 | ||
70221824 | 11006 | static int |
7a697b8d SS |
11007 | remote_supports_fast_tracepoints (void) |
11008 | { | |
4082afcc | 11009 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
11010 | } |
11011 | ||
0fb4aa4b PA |
11012 | static int |
11013 | remote_supports_static_tracepoints (void) | |
11014 | { | |
4082afcc | 11015 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
11016 | } |
11017 | ||
1e4d1764 YQ |
11018 | static int |
11019 | remote_supports_install_in_trace (void) | |
11020 | { | |
4082afcc | 11021 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
11022 | } |
11023 | ||
d248b706 | 11024 | static int |
7d178d6a | 11025 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
d248b706 | 11026 | { |
4082afcc PA |
11027 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11028 | == PACKET_ENABLE); | |
d248b706 KY |
11029 | } |
11030 | ||
3065dfb6 | 11031 | static int |
6de37a3a | 11032 | remote_supports_string_tracing (struct target_ops *self) |
3065dfb6 | 11033 | { |
4082afcc | 11034 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
11035 | } |
11036 | ||
d3ce09f5 | 11037 | static int |
78eff0ec | 11038 | remote_can_run_breakpoint_commands (struct target_ops *self) |
d3ce09f5 | 11039 | { |
4082afcc | 11040 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
11041 | } |
11042 | ||
35b1e5cc | 11043 | static void |
ecae04e1 | 11044 | remote_trace_init (struct target_ops *self) |
35b1e5cc SS |
11045 | { |
11046 | putpkt ("QTinit"); | |
11047 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 11048 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
11049 | error (_("Target does not support this command.")); |
11050 | } | |
11051 | ||
11052 | static void free_actions_list (char **actions_list); | |
11053 | static void free_actions_list_cleanup_wrapper (void *); | |
11054 | static void | |
11055 | free_actions_list_cleanup_wrapper (void *al) | |
11056 | { | |
11057 | free_actions_list (al); | |
11058 | } | |
11059 | ||
11060 | static void | |
11061 | free_actions_list (char **actions_list) | |
11062 | { | |
11063 | int ndx; | |
11064 | ||
11065 | if (actions_list == 0) | |
11066 | return; | |
11067 | ||
11068 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11069 | xfree (actions_list[ndx]); | |
11070 | ||
11071 | xfree (actions_list); | |
11072 | } | |
11073 | ||
409873ef SS |
11074 | /* Recursive routine to walk through command list including loops, and |
11075 | download packets for each command. */ | |
11076 | ||
11077 | static void | |
11078 | remote_download_command_source (int num, ULONGEST addr, | |
11079 | struct command_line *cmds) | |
11080 | { | |
11081 | struct remote_state *rs = get_remote_state (); | |
11082 | struct command_line *cmd; | |
11083 | ||
11084 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11085 | { | |
0df8b418 | 11086 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11087 | strcpy (rs->buf, "QTDPsrc:"); |
11088 | encode_source_string (num, addr, "cmd", cmd->line, | |
11089 | rs->buf + strlen (rs->buf), | |
11090 | rs->buf_size - strlen (rs->buf)); | |
11091 | putpkt (rs->buf); | |
11092 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11093 | if (strcmp (target_buf, "OK")) | |
11094 | warning (_("Target does not support source download.")); | |
11095 | ||
11096 | if (cmd->control_type == while_control | |
11097 | || cmd->control_type == while_stepping_control) | |
11098 | { | |
11099 | remote_download_command_source (num, addr, *cmd->body_list); | |
11100 | ||
0df8b418 | 11101 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
11102 | strcpy (rs->buf, "QTDPsrc:"); |
11103 | encode_source_string (num, addr, "cmd", "end", | |
11104 | rs->buf + strlen (rs->buf), | |
11105 | rs->buf_size - strlen (rs->buf)); | |
11106 | putpkt (rs->buf); | |
11107 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11108 | if (strcmp (target_buf, "OK")) | |
11109 | warning (_("Target does not support source download.")); | |
11110 | } | |
11111 | } | |
11112 | } | |
11113 | ||
35b1e5cc | 11114 | static void |
548f7808 | 11115 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
35b1e5cc | 11116 | { |
bba74b36 | 11117 | #define BUF_SIZE 2048 |
e8ba3115 | 11118 | |
35b1e5cc | 11119 | CORE_ADDR tpaddr; |
409873ef | 11120 | char addrbuf[40]; |
bba74b36 | 11121 | char buf[BUF_SIZE]; |
35b1e5cc SS |
11122 | char **tdp_actions; |
11123 | char **stepping_actions; | |
11124 | int ndx; | |
11125 | struct cleanup *old_chain = NULL; | |
11126 | struct agent_expr *aexpr; | |
11127 | struct cleanup *aexpr_chain = NULL; | |
11128 | char *pkt; | |
e8ba3115 | 11129 | struct breakpoint *b = loc->owner; |
d9b3f62e | 11130 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 11131 | |
dc673c81 | 11132 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
11133 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11134 | tdp_actions); | |
11135 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11136 | stepping_actions); | |
11137 | ||
11138 | tpaddr = loc->address; | |
11139 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
11140 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11141 | addrbuf, /* address */ | |
11142 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11143 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
11144 | /* Fast tracepoints are mostly handled by the target, but we can |
11145 | tell the target how big of an instruction block should be moved | |
11146 | around. */ | |
11147 | if (b->type == bp_fast_tracepoint) | |
11148 | { | |
11149 | /* Only test for support at download time; we may not know | |
11150 | target capabilities at definition time. */ | |
11151 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 11152 | { |
6b940e6a PL |
11153 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
11154 | NULL)) | |
bba74b36 | 11155 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
6b940e6a | 11156 | gdb_insn_length (loc->gdbarch, tpaddr)); |
35b1e5cc | 11157 | else |
e8ba3115 YQ |
11158 | /* If it passed validation at definition but fails now, |
11159 | something is very wrong. */ | |
11160 | internal_error (__FILE__, __LINE__, | |
11161 | _("Fast tracepoint not " | |
11162 | "valid during download")); | |
35b1e5cc | 11163 | } |
e8ba3115 YQ |
11164 | else |
11165 | /* Fast tracepoints are functionally identical to regular | |
11166 | tracepoints, so don't take lack of support as a reason to | |
11167 | give up on the trace run. */ | |
11168 | warning (_("Target does not support fast tracepoints, " | |
11169 | "downloading %d as regular tracepoint"), b->number); | |
11170 | } | |
11171 | else if (b->type == bp_static_tracepoint) | |
11172 | { | |
11173 | /* Only test for support at download time; we may not know | |
11174 | target capabilities at definition time. */ | |
11175 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 11176 | { |
e8ba3115 | 11177 | struct static_tracepoint_marker marker; |
0fb4aa4b | 11178 | |
e8ba3115 YQ |
11179 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11180 | strcat (buf, ":S"); | |
0fb4aa4b | 11181 | else |
e8ba3115 | 11182 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 11183 | } |
e8ba3115 YQ |
11184 | else |
11185 | /* Fast tracepoints are functionally identical to regular | |
11186 | tracepoints, so don't take lack of support as a reason | |
11187 | to give up on the trace run. */ | |
11188 | error (_("Target does not support static tracepoints")); | |
11189 | } | |
11190 | /* If the tracepoint has a conditional, make it into an agent | |
11191 | expression and append to the definition. */ | |
11192 | if (loc->cond) | |
11193 | { | |
11194 | /* Only test support at download time, we may not know target | |
11195 | capabilities at definition time. */ | |
11196 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 11197 | { |
e8ba3115 YQ |
11198 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11199 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
11200 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11201 | aexpr->len); | |
e8ba3115 YQ |
11202 | pkt = buf + strlen (buf); |
11203 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11204 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11205 | *pkt = '\0'; | |
11206 | do_cleanups (aexpr_chain); | |
35b1e5cc | 11207 | } |
e8ba3115 YQ |
11208 | else |
11209 | warning (_("Target does not support conditional tracepoints, " | |
11210 | "ignoring tp %d cond"), b->number); | |
11211 | } | |
35b1e5cc | 11212 | |
d9b3f62e | 11213 | if (b->commands || *default_collect) |
e8ba3115 YQ |
11214 | strcat (buf, "-"); |
11215 | putpkt (buf); | |
11216 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11217 | if (strcmp (target_buf, "OK")) | |
11218 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 11219 | |
e8ba3115 YQ |
11220 | /* do_single_steps (t); */ |
11221 | if (tdp_actions) | |
11222 | { | |
11223 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 11224 | { |
e8ba3115 | 11225 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11226 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11227 | b->number, addrbuf, /* address */ | |
11228 | tdp_actions[ndx], | |
11229 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11230 | ? '-' : 0)); | |
e8ba3115 YQ |
11231 | putpkt (buf); |
11232 | remote_get_noisy_reply (&target_buf, | |
11233 | &target_buf_size); | |
11234 | if (strcmp (target_buf, "OK")) | |
11235 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11236 | } |
e8ba3115 YQ |
11237 | } |
11238 | if (stepping_actions) | |
11239 | { | |
11240 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 11241 | { |
e8ba3115 | 11242 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
11243 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11244 | b->number, addrbuf, /* address */ | |
11245 | ((ndx == 0) ? "S" : ""), | |
11246 | stepping_actions[ndx], | |
11247 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
11248 | putpkt (buf); |
11249 | remote_get_noisy_reply (&target_buf, | |
11250 | &target_buf_size); | |
11251 | if (strcmp (target_buf, "OK")) | |
11252 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 11253 | } |
e8ba3115 | 11254 | } |
409873ef | 11255 | |
4082afcc | 11256 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 11257 | { |
f00aae0f | 11258 | if (b->location != NULL) |
409873ef | 11259 | { |
e8ba3115 | 11260 | strcpy (buf, "QTDPsrc:"); |
f00aae0f KS |
11261 | encode_source_string (b->number, loc->address, "at", |
11262 | event_location_to_string (b->location), | |
11263 | buf + strlen (buf), 2048 - strlen (buf)); | |
e8ba3115 YQ |
11264 | putpkt (buf); |
11265 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11266 | if (strcmp (target_buf, "OK")) | |
11267 | warning (_("Target does not support source download.")); | |
409873ef | 11268 | } |
e8ba3115 YQ |
11269 | if (b->cond_string) |
11270 | { | |
11271 | strcpy (buf, "QTDPsrc:"); | |
11272 | encode_source_string (b->number, loc->address, | |
11273 | "cond", b->cond_string, buf + strlen (buf), | |
11274 | 2048 - strlen (buf)); | |
11275 | putpkt (buf); | |
11276 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11277 | if (strcmp (target_buf, "OK")) | |
11278 | warning (_("Target does not support source download.")); | |
11279 | } | |
11280 | remote_download_command_source (b->number, loc->address, | |
11281 | breakpoint_commands (b)); | |
35b1e5cc | 11282 | } |
e8ba3115 YQ |
11283 | |
11284 | do_cleanups (old_chain); | |
35b1e5cc SS |
11285 | } |
11286 | ||
1e4d1764 | 11287 | static int |
a52a8357 | 11288 | remote_can_download_tracepoint (struct target_ops *self) |
1e4d1764 | 11289 | { |
1e51243a PA |
11290 | struct remote_state *rs = get_remote_state (); |
11291 | struct trace_status *ts; | |
11292 | int status; | |
11293 | ||
11294 | /* Don't try to install tracepoints until we've relocated our | |
11295 | symbols, and fetched and merged the target's tracepoint list with | |
11296 | ours. */ | |
11297 | if (rs->starting_up) | |
11298 | return 0; | |
11299 | ||
11300 | ts = current_trace_status (); | |
8bd200f1 | 11301 | status = remote_get_trace_status (self, ts); |
1e4d1764 YQ |
11302 | |
11303 | if (status == -1 || !ts->running_known || !ts->running) | |
11304 | return 0; | |
11305 | ||
11306 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11307 | installing tracepoint in trace, we have to return. */ | |
11308 | if (!remote_supports_install_in_trace ()) | |
11309 | return 0; | |
11310 | ||
11311 | return 1; | |
11312 | } | |
11313 | ||
11314 | ||
35b1e5cc | 11315 | static void |
559d2b81 TT |
11316 | remote_download_trace_state_variable (struct target_ops *self, |
11317 | struct trace_state_variable *tsv) | |
35b1e5cc SS |
11318 | { |
11319 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 11320 | char *p; |
35b1e5cc | 11321 | |
bba74b36 YQ |
11322 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11323 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11324 | tsv->builtin); | |
00bf0b85 SS |
11325 | p = rs->buf + strlen (rs->buf); |
11326 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11327 | error (_("Trace state variable name too long for tsv definition packet")); | |
9f1b45b0 | 11328 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
00bf0b85 | 11329 | *p++ = '\0'; |
35b1e5cc SS |
11330 | putpkt (rs->buf); |
11331 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11332 | if (*target_buf == '\0') |
11333 | error (_("Target does not support this command.")); | |
11334 | if (strcmp (target_buf, "OK") != 0) | |
11335 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
11336 | } |
11337 | ||
d248b706 | 11338 | static void |
46670d57 TT |
11339 | remote_enable_tracepoint (struct target_ops *self, |
11340 | struct bp_location *location) | |
d248b706 KY |
11341 | { |
11342 | struct remote_state *rs = get_remote_state (); | |
11343 | char addr_buf[40]; | |
11344 | ||
11345 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11346 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11347 | location->owner->number, addr_buf); | |
d248b706 KY |
11348 | putpkt (rs->buf); |
11349 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11350 | if (*rs->buf == '\0') | |
11351 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11352 | if (strcmp (rs->buf, "OK") != 0) | |
11353 | error (_("Error on target while enabling tracepoint.")); | |
11354 | } | |
11355 | ||
11356 | static void | |
780b049c TT |
11357 | remote_disable_tracepoint (struct target_ops *self, |
11358 | struct bp_location *location) | |
d248b706 KY |
11359 | { |
11360 | struct remote_state *rs = get_remote_state (); | |
11361 | char addr_buf[40]; | |
11362 | ||
11363 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
11364 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11365 | location->owner->number, addr_buf); | |
d248b706 KY |
11366 | putpkt (rs->buf); |
11367 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11368 | if (*rs->buf == '\0') | |
11369 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11370 | if (strcmp (rs->buf, "OK") != 0) | |
11371 | error (_("Error on target while disabling tracepoint.")); | |
11372 | } | |
11373 | ||
35b1e5cc | 11374 | static void |
583f9a86 | 11375 | remote_trace_set_readonly_regions (struct target_ops *self) |
35b1e5cc SS |
11376 | { |
11377 | asection *s; | |
81b9b86e | 11378 | bfd *abfd = NULL; |
35b1e5cc | 11379 | bfd_size_type size; |
608bcef2 | 11380 | bfd_vma vma; |
35b1e5cc | 11381 | int anysecs = 0; |
c2fa21f1 | 11382 | int offset = 0; |
35b1e5cc SS |
11383 | |
11384 | if (!exec_bfd) | |
11385 | return; /* No information to give. */ | |
11386 | ||
11387 | strcpy (target_buf, "QTro"); | |
9779ab84 | 11388 | offset = strlen (target_buf); |
35b1e5cc SS |
11389 | for (s = exec_bfd->sections; s; s = s->next) |
11390 | { | |
11391 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 11392 | int sec_length; |
35b1e5cc SS |
11393 | |
11394 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 11395 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
11396 | (s->flags & SEC_READONLY) == 0) |
11397 | continue; | |
11398 | ||
11399 | anysecs = 1; | |
81b9b86e | 11400 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 11401 | size = bfd_get_section_size (s); |
608bcef2 HZ |
11402 | sprintf_vma (tmp1, vma); |
11403 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
11404 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
11405 | if (offset + sec_length + 1 > target_buf_size) | |
11406 | { | |
4082afcc | 11407 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 11408 | warning (_("\ |
c2fa21f1 HZ |
11409 | Too many sections for read-only sections definition packet.")); |
11410 | break; | |
11411 | } | |
bba74b36 YQ |
11412 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11413 | tmp1, tmp2); | |
c2fa21f1 | 11414 | offset += sec_length; |
35b1e5cc SS |
11415 | } |
11416 | if (anysecs) | |
11417 | { | |
11418 | putpkt (target_buf); | |
11419 | getpkt (&target_buf, &target_buf_size, 0); | |
11420 | } | |
11421 | } | |
11422 | ||
11423 | static void | |
e2d1aae3 | 11424 | remote_trace_start (struct target_ops *self) |
35b1e5cc SS |
11425 | { |
11426 | putpkt ("QTStart"); | |
11427 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11428 | if (*target_buf == '\0') |
11429 | error (_("Target does not support this command.")); | |
11430 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11431 | error (_("Bogus reply from target: %s"), target_buf); |
11432 | } | |
11433 | ||
11434 | static int | |
8bd200f1 | 11435 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
35b1e5cc | 11436 | { |
953b98d1 | 11437 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 11438 | char *p = NULL; |
0df8b418 | 11439 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 11440 | extern int trace_regblock_size; |
bd3eecc3 PA |
11441 | enum packet_result result; |
11442 | ||
4082afcc | 11443 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 11444 | return -1; |
a744cf53 | 11445 | |
00bf0b85 SS |
11446 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
11447 | ||
049dc89b JK |
11448 | putpkt ("qTStatus"); |
11449 | ||
492d29ea | 11450 | TRY |
67f41397 JK |
11451 | { |
11452 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11453 | } | |
492d29ea | 11454 | CATCH (ex, RETURN_MASK_ERROR) |
67f41397 | 11455 | { |
598d3636 JK |
11456 | if (ex.error != TARGET_CLOSE_ERROR) |
11457 | { | |
11458 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11459 | return -1; | |
11460 | } | |
11461 | throw_exception (ex); | |
67f41397 | 11462 | } |
492d29ea | 11463 | END_CATCH |
00bf0b85 | 11464 | |
bd3eecc3 PA |
11465 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
11466 | ||
00bf0b85 | 11467 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 11468 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 11469 | return -1; |
35b1e5cc | 11470 | |
00bf0b85 | 11471 | /* We're working with a live target. */ |
f5911ea1 | 11472 | ts->filename = NULL; |
00bf0b85 | 11473 | |
00bf0b85 | 11474 | if (*p++ != 'T') |
35b1e5cc SS |
11475 | error (_("Bogus trace status reply from target: %s"), target_buf); |
11476 | ||
84cebc4a YQ |
11477 | /* Function 'parse_trace_status' sets default value of each field of |
11478 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
11479 | parse_trace_status (p, ts); |
11480 | ||
11481 | return ts->running; | |
35b1e5cc SS |
11482 | } |
11483 | ||
70221824 | 11484 | static void |
db90e85c | 11485 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
f196051f SS |
11486 | struct uploaded_tp *utp) |
11487 | { | |
11488 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
11489 | char *reply; |
11490 | struct bp_location *loc; | |
11491 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 11492 | size_t size = get_remote_packet_size (); |
f196051f SS |
11493 | |
11494 | if (tp) | |
11495 | { | |
11496 | tp->base.hit_count = 0; | |
11497 | tp->traceframe_usage = 0; | |
11498 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11499 | { | |
11500 | /* If the tracepoint was never downloaded, don't go asking for | |
11501 | any status. */ | |
11502 | if (tp->number_on_target == 0) | |
11503 | continue; | |
bba74b36 YQ |
11504 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11505 | phex_nz (loc->address, 0)); | |
f196051f SS |
11506 | putpkt (rs->buf); |
11507 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11508 | if (reply && *reply) | |
11509 | { | |
11510 | if (*reply == 'V') | |
11511 | parse_tracepoint_status (reply + 1, bp, utp); | |
11512 | } | |
11513 | } | |
11514 | } | |
11515 | else if (utp) | |
11516 | { | |
11517 | utp->hit_count = 0; | |
11518 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
11519 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11520 | phex_nz (utp->addr, 0)); | |
f196051f SS |
11521 | putpkt (rs->buf); |
11522 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11523 | if (reply && *reply) | |
11524 | { | |
11525 | if (*reply == 'V') | |
11526 | parse_tracepoint_status (reply + 1, bp, utp); | |
11527 | } | |
11528 | } | |
11529 | } | |
11530 | ||
35b1e5cc | 11531 | static void |
74499f1b | 11532 | remote_trace_stop (struct target_ops *self) |
35b1e5cc SS |
11533 | { |
11534 | putpkt ("QTStop"); | |
11535 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
11536 | if (*target_buf == '\0') |
11537 | error (_("Target does not support this command.")); | |
11538 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
11539 | error (_("Bogus reply from target: %s"), target_buf); |
11540 | } | |
11541 | ||
11542 | static int | |
bd4c6793 TT |
11543 | remote_trace_find (struct target_ops *self, |
11544 | enum trace_find_type type, int num, | |
cc5925ad | 11545 | CORE_ADDR addr1, CORE_ADDR addr2, |
35b1e5cc SS |
11546 | int *tpp) |
11547 | { | |
11548 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 11549 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
11550 | char *p, *reply; |
11551 | int target_frameno = -1, target_tracept = -1; | |
11552 | ||
e6e4e701 PA |
11553 | /* Lookups other than by absolute frame number depend on the current |
11554 | trace selected, so make sure it is correct on the remote end | |
11555 | first. */ | |
11556 | if (type != tfind_number) | |
11557 | set_remote_traceframe (); | |
11558 | ||
35b1e5cc SS |
11559 | p = rs->buf; |
11560 | strcpy (p, "QTFrame:"); | |
11561 | p = strchr (p, '\0'); | |
11562 | switch (type) | |
11563 | { | |
11564 | case tfind_number: | |
bba74b36 | 11565 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
11566 | break; |
11567 | case tfind_pc: | |
bba74b36 | 11568 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
11569 | break; |
11570 | case tfind_tp: | |
bba74b36 | 11571 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
11572 | break; |
11573 | case tfind_range: | |
bba74b36 YQ |
11574 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11575 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11576 | break; |
11577 | case tfind_outside: | |
bba74b36 YQ |
11578 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11579 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
11580 | break; |
11581 | default: | |
9b20d036 | 11582 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
11583 | } |
11584 | ||
11585 | putpkt (rs->buf); | |
2f65bcb7 | 11586 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
ad91cd99 PA |
11587 | if (*reply == '\0') |
11588 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
11589 | |
11590 | while (reply && *reply) | |
11591 | switch (*reply) | |
11592 | { | |
11593 | case 'F': | |
f197e0f1 VP |
11594 | p = ++reply; |
11595 | target_frameno = (int) strtol (p, &reply, 16); | |
11596 | if (reply == p) | |
11597 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
11598 | /* Don't update our remote traceframe number cache on failure |
11599 | to select a remote traceframe. */ | |
f197e0f1 VP |
11600 | if (target_frameno == -1) |
11601 | return -1; | |
35b1e5cc SS |
11602 | break; |
11603 | case 'T': | |
f197e0f1 VP |
11604 | p = ++reply; |
11605 | target_tracept = (int) strtol (p, &reply, 16); | |
11606 | if (reply == p) | |
11607 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
11608 | break; |
11609 | case 'O': /* "OK"? */ | |
11610 | if (reply[1] == 'K' && reply[2] == '\0') | |
11611 | reply += 2; | |
11612 | else | |
11613 | error (_("Bogus reply from target: %s"), reply); | |
11614 | break; | |
11615 | default: | |
11616 | error (_("Bogus reply from target: %s"), reply); | |
11617 | } | |
11618 | if (tpp) | |
11619 | *tpp = target_tracept; | |
e6e4e701 | 11620 | |
262e1174 | 11621 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
11622 | return target_frameno; |
11623 | } | |
11624 | ||
11625 | static int | |
4011015b TT |
11626 | remote_get_trace_state_variable_value (struct target_ops *self, |
11627 | int tsvnum, LONGEST *val) | |
35b1e5cc SS |
11628 | { |
11629 | struct remote_state *rs = get_remote_state (); | |
11630 | char *reply; | |
11631 | ULONGEST uval; | |
11632 | ||
e6e4e701 PA |
11633 | set_remote_traceframe (); |
11634 | ||
bba74b36 | 11635 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
11636 | putpkt (rs->buf); |
11637 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11638 | if (reply && *reply) | |
11639 | { | |
11640 | if (*reply == 'V') | |
11641 | { | |
11642 | unpack_varlen_hex (reply + 1, &uval); | |
11643 | *val = (LONGEST) uval; | |
11644 | return 1; | |
11645 | } | |
11646 | } | |
11647 | return 0; | |
11648 | } | |
11649 | ||
00bf0b85 | 11650 | static int |
dc3decaf | 11651 | remote_save_trace_data (struct target_ops *self, const char *filename) |
00bf0b85 SS |
11652 | { |
11653 | struct remote_state *rs = get_remote_state (); | |
11654 | char *p, *reply; | |
11655 | ||
11656 | p = rs->buf; | |
11657 | strcpy (p, "QTSave:"); | |
11658 | p += strlen (p); | |
11659 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11660 | error (_("Remote file name too long for trace save packet")); | |
9f1b45b0 | 11661 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
11662 | *p++ = '\0'; |
11663 | putpkt (rs->buf); | |
ad91cd99 | 11664 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 11665 | if (*reply == '\0') |
ad91cd99 PA |
11666 | error (_("Target does not support this command.")); |
11667 | if (strcmp (reply, "OK") != 0) | |
11668 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
11669 | return 0; |
11670 | } | |
11671 | ||
11672 | /* This is basically a memory transfer, but needs to be its own packet | |
11673 | because we don't know how the target actually organizes its trace | |
11674 | memory, plus we want to be able to ask for as much as possible, but | |
11675 | not be unhappy if we don't get as much as we ask for. */ | |
11676 | ||
11677 | static LONGEST | |
88ee6f45 TT |
11678 | remote_get_raw_trace_data (struct target_ops *self, |
11679 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
11680 | { |
11681 | struct remote_state *rs = get_remote_state (); | |
11682 | char *reply; | |
11683 | char *p; | |
11684 | int rslt; | |
11685 | ||
11686 | p = rs->buf; | |
11687 | strcpy (p, "qTBuffer:"); | |
11688 | p += strlen (p); | |
11689 | p += hexnumstr (p, offset); | |
11690 | *p++ = ','; | |
11691 | p += hexnumstr (p, len); | |
11692 | *p++ = '\0'; | |
11693 | ||
11694 | putpkt (rs->buf); | |
11695 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11696 | if (reply && *reply) | |
11697 | { | |
11698 | /* 'l' by itself means we're at the end of the buffer and | |
11699 | there is nothing more to get. */ | |
11700 | if (*reply == 'l') | |
11701 | return 0; | |
11702 | ||
11703 | /* Convert the reply into binary. Limit the number of bytes to | |
11704 | convert according to our passed-in buffer size, rather than | |
11705 | what was returned in the packet; if the target is | |
11706 | unexpectedly generous and gives us a bigger reply than we | |
11707 | asked for, we don't want to crash. */ | |
11708 | rslt = hex2bin (target_buf, buf, len); | |
11709 | return rslt; | |
11710 | } | |
11711 | ||
11712 | /* Something went wrong, flag as an error. */ | |
11713 | return -1; | |
11714 | } | |
11715 | ||
35b1e5cc | 11716 | static void |
37b25738 | 11717 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
35b1e5cc SS |
11718 | { |
11719 | struct remote_state *rs = get_remote_state (); | |
11720 | ||
4082afcc | 11721 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 11722 | { |
ad91cd99 PA |
11723 | char *reply; |
11724 | ||
bba74b36 | 11725 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 11726 | putpkt (rs->buf); |
ad91cd99 PA |
11727 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11728 | if (*reply == '\0') | |
33da3f1c | 11729 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11730 | if (strcmp (reply, "OK") != 0) |
11731 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
11732 | } |
11733 | else if (val) | |
11734 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
11735 | } |
11736 | ||
dc146f7c VP |
11737 | static int |
11738 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11739 | { | |
11740 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 11741 | |
fe978cb0 PA |
11742 | if (info && info->priv) |
11743 | return info->priv->core; | |
dc146f7c VP |
11744 | return -1; |
11745 | } | |
11746 | ||
4daf5ac0 | 11747 | static void |
736d5b1f | 11748 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
4daf5ac0 SS |
11749 | { |
11750 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 11751 | char *reply; |
4daf5ac0 | 11752 | |
bba74b36 | 11753 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 11754 | putpkt (rs->buf); |
ad91cd99 PA |
11755 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
11756 | if (*reply == '\0') | |
4daf5ac0 | 11757 | error (_("Target does not support this command.")); |
ad91cd99 PA |
11758 | if (strcmp (reply, "OK") != 0) |
11759 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
11760 | } |
11761 | ||
b3b9301e | 11762 | static struct traceframe_info * |
a893e81f | 11763 | remote_traceframe_info (struct target_ops *self) |
b3b9301e PA |
11764 | { |
11765 | char *text; | |
11766 | ||
11767 | text = target_read_stralloc (¤t_target, | |
11768 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11769 | if (text != NULL) | |
11770 | { | |
11771 | struct traceframe_info *info; | |
11772 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11773 | ||
11774 | info = parse_traceframe_info (text); | |
11775 | do_cleanups (back_to); | |
11776 | return info; | |
11777 | } | |
11778 | ||
11779 | return NULL; | |
11780 | } | |
11781 | ||
405f8e94 SS |
11782 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11783 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11784 | if the packet is not supported, and 0 if the minimum instruction | |
11785 | length is unknown. */ | |
11786 | ||
11787 | static int | |
0e67620a | 11788 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
405f8e94 SS |
11789 | { |
11790 | struct remote_state *rs = get_remote_state (); | |
11791 | char *reply; | |
11792 | ||
e886a173 PA |
11793 | /* If we're not debugging a process yet, the IPA can't be |
11794 | loaded. */ | |
11795 | if (!target_has_execution) | |
11796 | return 0; | |
11797 | ||
11798 | /* Make sure the remote is pointing at the right process. */ | |
11799 | set_general_process (); | |
11800 | ||
bba74b36 | 11801 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11802 | putpkt (rs->buf); |
11803 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11804 | if (*reply == '\0') | |
11805 | return -1; | |
11806 | else | |
11807 | { | |
11808 | ULONGEST min_insn_len; | |
11809 | ||
11810 | unpack_varlen_hex (reply, &min_insn_len); | |
11811 | ||
11812 | return (int) min_insn_len; | |
11813 | } | |
11814 | } | |
11815 | ||
f6f899bf | 11816 | static void |
4da384be | 11817 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
f6f899bf | 11818 | { |
4082afcc | 11819 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
11820 | { |
11821 | struct remote_state *rs = get_remote_state (); | |
11822 | char *buf = rs->buf; | |
11823 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11824 | enum packet_result result; | |
11825 | ||
11826 | gdb_assert (val >= 0 || val == -1); | |
11827 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11828 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11829 | if (val < 0) | |
11830 | { | |
11831 | *buf++ = '-'; | |
11832 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11833 | } | |
11834 | else | |
11835 | buf += hexnumstr (buf, (ULONGEST) val); | |
11836 | ||
11837 | putpkt (rs->buf); | |
11838 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11839 | result = packet_ok (rs->buf, | |
11840 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11841 | ||
11842 | if (result != PACKET_OK) | |
11843 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11844 | } | |
11845 | } | |
11846 | ||
f196051f | 11847 | static int |
d9e68a2c TT |
11848 | remote_set_trace_notes (struct target_ops *self, |
11849 | const char *user, const char *notes, | |
ca623f82 | 11850 | const char *stop_notes) |
f196051f SS |
11851 | { |
11852 | struct remote_state *rs = get_remote_state (); | |
11853 | char *reply; | |
11854 | char *buf = rs->buf; | |
11855 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11856 | int nbytes; | |
11857 | ||
11858 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11859 | if (user) | |
11860 | { | |
11861 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 11862 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
11863 | buf += 2 * nbytes; |
11864 | *buf++ = ';'; | |
11865 | } | |
11866 | if (notes) | |
11867 | { | |
11868 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 11869 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
11870 | buf += 2 * nbytes; |
11871 | *buf++ = ';'; | |
11872 | } | |
11873 | if (stop_notes) | |
11874 | { | |
11875 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 11876 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
11877 | buf += 2 * nbytes; |
11878 | *buf++ = ';'; | |
11879 | } | |
11880 | /* Ensure the buffer is terminated. */ | |
11881 | *buf = '\0'; | |
11882 | ||
11883 | putpkt (rs->buf); | |
11884 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11885 | if (*reply == '\0') | |
11886 | return 0; | |
11887 | ||
11888 | if (strcmp (reply, "OK") != 0) | |
11889 | error (_("Bogus reply from target: %s"), reply); | |
11890 | ||
11891 | return 1; | |
11892 | } | |
11893 | ||
d1feda86 | 11894 | static int |
2c152180 | 11895 | remote_use_agent (struct target_ops *self, int use) |
d1feda86 | 11896 | { |
4082afcc | 11897 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
11898 | { |
11899 | struct remote_state *rs = get_remote_state (); | |
11900 | ||
11901 | /* If the stub supports QAgent. */ | |
bba74b36 | 11902 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11903 | putpkt (rs->buf); |
11904 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11905 | ||
11906 | if (strcmp (rs->buf, "OK") == 0) | |
11907 | { | |
11908 | use_agent = use; | |
11909 | return 1; | |
11910 | } | |
11911 | } | |
11912 | ||
11913 | return 0; | |
11914 | } | |
11915 | ||
11916 | static int | |
fe38f897 | 11917 | remote_can_use_agent (struct target_ops *self) |
d1feda86 | 11918 | { |
4082afcc | 11919 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
11920 | } |
11921 | ||
9accd112 MM |
11922 | struct btrace_target_info |
11923 | { | |
11924 | /* The ptid of the traced thread. */ | |
11925 | ptid_t ptid; | |
f4abbc16 MM |
11926 | |
11927 | /* The obtained branch trace configuration. */ | |
11928 | struct btrace_config conf; | |
9accd112 MM |
11929 | }; |
11930 | ||
f4abbc16 MM |
11931 | /* Reset our idea of our target's btrace configuration. */ |
11932 | ||
11933 | static void | |
11934 | remote_btrace_reset (void) | |
11935 | { | |
11936 | struct remote_state *rs = get_remote_state (); | |
11937 | ||
11938 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
11939 | } | |
11940 | ||
9accd112 MM |
11941 | /* Check whether the target supports branch tracing. */ |
11942 | ||
11943 | static int | |
043c3577 | 11944 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
9accd112 | 11945 | { |
4082afcc | 11946 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 | 11947 | return 0; |
4082afcc | 11948 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
11949 | return 0; |
11950 | ||
043c3577 MM |
11951 | switch (format) |
11952 | { | |
11953 | case BTRACE_FORMAT_NONE: | |
11954 | return 0; | |
11955 | ||
11956 | case BTRACE_FORMAT_BTS: | |
11957 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
b20a6524 MM |
11958 | |
11959 | case BTRACE_FORMAT_PT: | |
11960 | /* The trace is decoded on the host. Even if our target supports it, | |
11961 | we still need to have libipt to decode the trace. */ | |
11962 | #if defined (HAVE_LIBIPT) | |
11963 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
11964 | #else /* !defined (HAVE_LIBIPT) */ | |
11965 | return 0; | |
11966 | #endif /* !defined (HAVE_LIBIPT) */ | |
043c3577 MM |
11967 | } |
11968 | ||
11969 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
9accd112 MM |
11970 | } |
11971 | ||
f4abbc16 MM |
11972 | /* Synchronize the configuration with the target. */ |
11973 | ||
11974 | static void | |
11975 | btrace_sync_conf (const struct btrace_config *conf) | |
11976 | { | |
d33501a5 MM |
11977 | struct packet_config *packet; |
11978 | struct remote_state *rs; | |
11979 | char *buf, *pos, *endbuf; | |
11980 | ||
11981 | rs = get_remote_state (); | |
11982 | buf = rs->buf; | |
11983 | endbuf = buf + get_remote_packet_size (); | |
11984 | ||
11985 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
11986 | if (packet_config_support (packet) == PACKET_ENABLE | |
11987 | && conf->bts.size != rs->btrace_config.bts.size) | |
11988 | { | |
11989 | pos = buf; | |
11990 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
11991 | conf->bts.size); | |
11992 | ||
11993 | putpkt (buf); | |
11994 | getpkt (&buf, &rs->buf_size, 0); | |
11995 | ||
11996 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
11997 | { | |
11998 | if (buf[0] == 'E' && buf[1] == '.') | |
11999 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12000 | else | |
12001 | error (_("Failed to configure the BTS buffer size.")); | |
12002 | } | |
12003 | ||
12004 | rs->btrace_config.bts.size = conf->bts.size; | |
12005 | } | |
b20a6524 MM |
12006 | |
12007 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12008 | if (packet_config_support (packet) == PACKET_ENABLE | |
12009 | && conf->pt.size != rs->btrace_config.pt.size) | |
12010 | { | |
12011 | pos = buf; | |
12012 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12013 | conf->pt.size); | |
12014 | ||
12015 | putpkt (buf); | |
12016 | getpkt (&buf, &rs->buf_size, 0); | |
12017 | ||
12018 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12019 | { | |
12020 | if (buf[0] == 'E' && buf[1] == '.') | |
12021 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12022 | else | |
12023 | error (_("Failed to configure the trace buffer size.")); | |
12024 | } | |
12025 | ||
12026 | rs->btrace_config.pt.size = conf->pt.size; | |
12027 | } | |
f4abbc16 MM |
12028 | } |
12029 | ||
12030 | /* Read the current thread's btrace configuration from the target and | |
12031 | store it into CONF. */ | |
12032 | ||
12033 | static void | |
12034 | btrace_read_config (struct btrace_config *conf) | |
12035 | { | |
12036 | char *xml; | |
12037 | ||
12038 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12039 | TARGET_OBJECT_BTRACE_CONF, ""); |
f4abbc16 MM |
12040 | if (xml != NULL) |
12041 | { | |
12042 | struct cleanup *cleanup; | |
12043 | ||
12044 | cleanup = make_cleanup (xfree, xml); | |
12045 | parse_xml_btrace_conf (conf, xml); | |
12046 | do_cleanups (cleanup); | |
12047 | } | |
12048 | } | |
12049 | ||
9accd112 MM |
12050 | /* Enable branch tracing. */ |
12051 | ||
12052 | static struct btrace_target_info * | |
f4abbc16 MM |
12053 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12054 | const struct btrace_config *conf) | |
9accd112 MM |
12055 | { |
12056 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 12057 | struct packet_config *packet = NULL; |
9accd112 MM |
12058 | struct remote_state *rs = get_remote_state (); |
12059 | char *buf = rs->buf; | |
12060 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12061 | ||
b20a6524 MM |
12062 | switch (conf->format) |
12063 | { | |
12064 | case BTRACE_FORMAT_BTS: | |
12065 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12066 | break; | |
12067 | ||
12068 | case BTRACE_FORMAT_PT: | |
12069 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12070 | break; | |
12071 | } | |
12072 | ||
12073 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
12074 | error (_("Target does not support branch tracing.")); |
12075 | ||
f4abbc16 MM |
12076 | btrace_sync_conf (conf); |
12077 | ||
9accd112 MM |
12078 | set_general_thread (ptid); |
12079 | ||
12080 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12081 | putpkt (rs->buf); | |
12082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12083 | ||
12084 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12085 | { | |
12086 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12087 | error (_("Could not enable branch tracing for %s: %s"), | |
12088 | target_pid_to_str (ptid), rs->buf + 2); | |
12089 | else | |
12090 | error (_("Could not enable branch tracing for %s."), | |
12091 | target_pid_to_str (ptid)); | |
12092 | } | |
12093 | ||
12094 | tinfo = xzalloc (sizeof (*tinfo)); | |
12095 | tinfo->ptid = ptid; | |
12096 | ||
f4abbc16 MM |
12097 | /* If we fail to read the configuration, we lose some information, but the |
12098 | tracing itself is not impacted. */ | |
492d29ea PA |
12099 | TRY |
12100 | { | |
12101 | btrace_read_config (&tinfo->conf); | |
12102 | } | |
12103 | CATCH (err, RETURN_MASK_ERROR) | |
12104 | { | |
12105 | if (err.message != NULL) | |
12106 | warning ("%s", err.message); | |
12107 | } | |
12108 | END_CATCH | |
f4abbc16 | 12109 | |
9accd112 MM |
12110 | return tinfo; |
12111 | } | |
12112 | ||
12113 | /* Disable branch tracing. */ | |
12114 | ||
12115 | static void | |
25e95349 TT |
12116 | remote_disable_btrace (struct target_ops *self, |
12117 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12118 | { |
12119 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12120 | struct remote_state *rs = get_remote_state (); | |
12121 | char *buf = rs->buf; | |
12122 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12123 | ||
4082afcc | 12124 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12125 | error (_("Target does not support branch tracing.")); |
12126 | ||
12127 | set_general_thread (tinfo->ptid); | |
12128 | ||
12129 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12130 | putpkt (rs->buf); | |
12131 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12132 | ||
12133 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12134 | { | |
12135 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12136 | error (_("Could not disable branch tracing for %s: %s"), | |
12137 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12138 | else | |
12139 | error (_("Could not disable branch tracing for %s."), | |
12140 | target_pid_to_str (tinfo->ptid)); | |
12141 | } | |
12142 | ||
12143 | xfree (tinfo); | |
12144 | } | |
12145 | ||
12146 | /* Teardown branch tracing. */ | |
12147 | ||
12148 | static void | |
1777056d TT |
12149 | remote_teardown_btrace (struct target_ops *self, |
12150 | struct btrace_target_info *tinfo) | |
9accd112 MM |
12151 | { |
12152 | /* We must not talk to the target during teardown. */ | |
12153 | xfree (tinfo); | |
12154 | } | |
12155 | ||
12156 | /* Read the branch trace. */ | |
12157 | ||
969c39fb | 12158 | static enum btrace_error |
39c49f83 | 12159 | remote_read_btrace (struct target_ops *self, |
734b0e4b | 12160 | struct btrace_data *btrace, |
969c39fb | 12161 | struct btrace_target_info *tinfo, |
9accd112 MM |
12162 | enum btrace_read_type type) |
12163 | { | |
12164 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12165 | struct remote_state *rs = get_remote_state (); | |
969c39fb | 12166 | struct cleanup *cleanup; |
9accd112 MM |
12167 | const char *annex; |
12168 | char *xml; | |
12169 | ||
4082afcc | 12170 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
12171 | error (_("Target does not support branch tracing.")); |
12172 | ||
12173 | #if !defined(HAVE_LIBEXPAT) | |
12174 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12175 | #endif | |
12176 | ||
12177 | switch (type) | |
12178 | { | |
864089d2 | 12179 | case BTRACE_READ_ALL: |
9accd112 MM |
12180 | annex = "all"; |
12181 | break; | |
864089d2 | 12182 | case BTRACE_READ_NEW: |
9accd112 MM |
12183 | annex = "new"; |
12184 | break; | |
969c39fb MM |
12185 | case BTRACE_READ_DELTA: |
12186 | annex = "delta"; | |
12187 | break; | |
9accd112 MM |
12188 | default: |
12189 | internal_error (__FILE__, __LINE__, | |
12190 | _("Bad branch tracing read type: %u."), | |
12191 | (unsigned int) type); | |
12192 | } | |
12193 | ||
12194 | xml = target_read_stralloc (¤t_target, | |
b20a6524 | 12195 | TARGET_OBJECT_BTRACE, annex); |
969c39fb MM |
12196 | if (xml == NULL) |
12197 | return BTRACE_ERR_UNKNOWN; | |
9accd112 | 12198 | |
969c39fb | 12199 | cleanup = make_cleanup (xfree, xml); |
734b0e4b | 12200 | parse_xml_btrace (btrace, xml); |
969c39fb | 12201 | do_cleanups (cleanup); |
9accd112 | 12202 | |
969c39fb | 12203 | return BTRACE_ERR_NONE; |
9accd112 MM |
12204 | } |
12205 | ||
f4abbc16 MM |
12206 | static const struct btrace_config * |
12207 | remote_btrace_conf (struct target_ops *self, | |
12208 | const struct btrace_target_info *tinfo) | |
12209 | { | |
12210 | return &tinfo->conf; | |
12211 | } | |
12212 | ||
ced63ec0 | 12213 | static int |
5436ff03 | 12214 | remote_augmented_libraries_svr4_read (struct target_ops *self) |
ced63ec0 | 12215 | { |
4082afcc PA |
12216 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
12217 | == PACKET_ENABLE); | |
ced63ec0 GB |
12218 | } |
12219 | ||
9dd130a0 TT |
12220 | /* Implementation of to_load. */ |
12221 | ||
12222 | static void | |
9cbe5fff | 12223 | remote_load (struct target_ops *self, const char *name, int from_tty) |
9dd130a0 TT |
12224 | { |
12225 | generic_load (name, from_tty); | |
12226 | } | |
12227 | ||
c78fa86a GB |
12228 | /* Accepts an integer PID; returns a string representing a file that |
12229 | can be opened on the remote side to get the symbols for the child | |
12230 | process. Returns NULL if the operation is not supported. */ | |
12231 | ||
12232 | static char * | |
12233 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12234 | { | |
12235 | static char *filename = NULL; | |
835205d0 GB |
12236 | struct inferior *inf; |
12237 | char *annex = NULL; | |
c78fa86a GB |
12238 | |
12239 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12240 | return NULL; | |
12241 | ||
12242 | if (filename != NULL) | |
12243 | xfree (filename); | |
12244 | ||
835205d0 GB |
12245 | inf = find_inferior_pid (pid); |
12246 | if (inf == NULL) | |
12247 | internal_error (__FILE__, __LINE__, | |
12248 | _("not currently attached to process %d"), pid); | |
12249 | ||
12250 | if (!inf->fake_pid_p) | |
12251 | { | |
12252 | const int annex_size = 9; | |
12253 | ||
12254 | annex = alloca (annex_size); | |
12255 | xsnprintf (annex, annex_size, "%x", pid); | |
12256 | } | |
12257 | ||
c78fa86a GB |
12258 | filename = target_read_stralloc (¤t_target, |
12259 | TARGET_OBJECT_EXEC_FILE, annex); | |
12260 | ||
12261 | return filename; | |
12262 | } | |
12263 | ||
c906108c | 12264 | static void |
fba45db2 | 12265 | init_remote_ops (void) |
c906108c | 12266 | { |
c5aa993b | 12267 | remote_ops.to_shortname = "remote"; |
c906108c | 12268 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 12269 | remote_ops.to_doc = |
c906108c | 12270 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
12271 | Specify the serial device it is connected to\n\ |
12272 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
12273 | remote_ops.to_open = remote_open; |
12274 | remote_ops.to_close = remote_close; | |
c906108c | 12275 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 12276 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 12277 | remote_ops.to_resume = remote_resume; |
c906108c SS |
12278 | remote_ops.to_wait = remote_wait; |
12279 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12280 | remote_ops.to_store_registers = remote_store_registers; | |
12281 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b | 12282 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
12283 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
12284 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
f7e6eed5 PA |
12285 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12286 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12287 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12288 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
3c3bea1c GS |
12289 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12290 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
12291 | remote_ops.to_watchpoint_addr_within_range = |
12292 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
12293 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12294 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12295 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
12296 | remote_ops.to_region_ok_for_hw_watchpoint |
12297 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
12298 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12299 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b | 12300 | remote_ops.to_kill = remote_kill; |
9dd130a0 | 12301 | remote_ops.to_load = remote_load; |
c906108c | 12302 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 12303 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 12304 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 12305 | remote_ops.to_thread_alive = remote_thread_alive; |
e8032dde | 12306 | remote_ops.to_update_thread_list = remote_update_thread_list; |
0caabb7e | 12307 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 12308 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 12309 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 12310 | remote_ops.to_stop = remote_stop; |
bfedc46a | 12311 | remote_ops.to_interrupt = remote_interrupt; |
4b8a223f | 12312 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 12313 | remote_ops.to_rcmd = remote_rcmd; |
c78fa86a | 12314 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
49d03eab | 12315 | remote_ops.to_log_command = serial_log_command; |
38691318 | 12316 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 12317 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
12318 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
12319 | remote_ops.to_has_memory = default_child_has_memory; | |
12320 | remote_ops.to_has_stack = default_child_has_stack; | |
12321 | remote_ops.to_has_registers = default_child_has_registers; | |
12322 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 12323 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 12324 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 12325 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 12326 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
12327 | remote_ops.to_flash_erase = remote_flash_erase; |
12328 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 12329 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 12330 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
12331 | remote_ops.to_can_async_p = remote_can_async_p; |
12332 | remote_ops.to_is_async_p = remote_is_async_p; | |
12333 | remote_ops.to_async = remote_async; | |
75c99385 PA |
12334 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12335 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 12336 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 12337 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
12338 | remote_ops.to_supports_disable_randomization |
12339 | = remote_supports_disable_randomization; | |
4bd7dc42 | 12340 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
7313baad UW |
12341 | remote_ops.to_fileio_open = remote_hostio_open; |
12342 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12343 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
9b15c1f0 | 12344 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
7313baad UW |
12345 | remote_ops.to_fileio_close = remote_hostio_close; |
12346 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 12347 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 12348 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 12349 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 12350 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 12351 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
12352 | remote_ops.to_trace_init = remote_trace_init; |
12353 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 12354 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
12355 | remote_ops.to_download_trace_state_variable |
12356 | = remote_download_trace_state_variable; | |
d248b706 KY |
12357 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12358 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
12359 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12360 | remote_ops.to_trace_start = remote_trace_start; | |
12361 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 12362 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
12363 | remote_ops.to_trace_stop = remote_trace_stop; |
12364 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
12365 | remote_ops.to_get_trace_state_variable_value |
12366 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
12367 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12368 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
12369 | remote_ops.to_upload_trace_state_variables |
12370 | = remote_upload_trace_state_variables; | |
00bf0b85 | 12371 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 12372 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 12373 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 12374 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f6f899bf | 12375 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
f196051f | 12376 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 12377 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 12378 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 12379 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 12380 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
12381 | remote_ops.to_static_tracepoint_marker_at |
12382 | = remote_static_tracepoint_marker_at; | |
12383 | remote_ops.to_static_tracepoint_markers_by_strid | |
12384 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 12385 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
12386 | remote_ops.to_use_agent = remote_use_agent; |
12387 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
9accd112 MM |
12388 | remote_ops.to_supports_btrace = remote_supports_btrace; |
12389 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12390 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12391 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12392 | remote_ops.to_read_btrace = remote_read_btrace; | |
f4abbc16 | 12393 | remote_ops.to_btrace_conf = remote_btrace_conf; |
ced63ec0 GB |
12394 | remote_ops.to_augmented_libraries_svr4_read = |
12395 | remote_augmented_libraries_svr4_read; | |
c906108c SS |
12396 | } |
12397 | ||
12398 | /* Set up the extended remote vector by making a copy of the standard | |
12399 | remote vector and adding to it. */ | |
12400 | ||
12401 | static void | |
fba45db2 | 12402 | init_extended_remote_ops (void) |
c906108c SS |
12403 | { |
12404 | extended_remote_ops = remote_ops; | |
12405 | ||
0f71a2f6 | 12406 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 12407 | extended_remote_ops.to_longname = |
c906108c | 12408 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 12409 | extended_remote_ops.to_doc = |
c906108c | 12410 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
12411 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
12412 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
12413 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
12414 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
12415 | extended_remote_ops.to_detach = extended_remote_detach; |
12416 | extended_remote_ops.to_attach = extended_remote_attach; | |
b9c1d481 | 12417 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
82f73884 | 12418 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
12419 | extended_remote_ops.to_supports_disable_randomization |
12420 | = extended_remote_supports_disable_randomization; | |
de0d863e | 12421 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
cbb8991c DB |
12422 | extended_remote_ops.to_insert_fork_catchpoint |
12423 | = remote_insert_fork_catchpoint; | |
12424 | extended_remote_ops.to_remove_fork_catchpoint | |
12425 | = remote_remove_fork_catchpoint; | |
12426 | extended_remote_ops.to_insert_vfork_catchpoint | |
12427 | = remote_insert_vfork_catchpoint; | |
12428 | extended_remote_ops.to_remove_vfork_catchpoint | |
12429 | = remote_remove_vfork_catchpoint; | |
0f71a2f6 JM |
12430 | } |
12431 | ||
6426a772 | 12432 | static int |
6a109b6b | 12433 | remote_can_async_p (struct target_ops *ops) |
6426a772 | 12434 | { |
5d93a237 TT |
12435 | struct remote_state *rs = get_remote_state (); |
12436 | ||
c6ebd6cf | 12437 | if (!target_async_permitted) |
75c99385 PA |
12438 | /* We only enable async when the user specifically asks for it. */ |
12439 | return 0; | |
12440 | ||
23860348 | 12441 | /* We're async whenever the serial device is. */ |
5d93a237 | 12442 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
12443 | } |
12444 | ||
12445 | static int | |
6a109b6b | 12446 | remote_is_async_p (struct target_ops *ops) |
6426a772 | 12447 | { |
5d93a237 TT |
12448 | struct remote_state *rs = get_remote_state (); |
12449 | ||
c6ebd6cf | 12450 | if (!target_async_permitted) |
75c99385 PA |
12451 | /* We only enable async when the user specifically asks for it. */ |
12452 | return 0; | |
12453 | ||
23860348 | 12454 | /* We're async whenever the serial device is. */ |
5d93a237 | 12455 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
12456 | } |
12457 | ||
2acceee2 JM |
12458 | /* Pass the SERIAL event on and up to the client. One day this code |
12459 | will be able to delay notifying the client of an event until the | |
23860348 | 12460 | point where an entire packet has been received. */ |
2acceee2 | 12461 | |
2acceee2 JM |
12462 | static serial_event_ftype remote_async_serial_handler; |
12463 | ||
6426a772 | 12464 | static void |
819cc324 | 12465 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 12466 | { |
88b496c3 TT |
12467 | struct remote_state *rs = context; |
12468 | ||
2acceee2 JM |
12469 | /* Don't propogate error information up to the client. Instead let |
12470 | the client find out about the error by querying the target. */ | |
6a3753b3 | 12471 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
12472 | } |
12473 | ||
74531fed PA |
12474 | static void |
12475 | remote_async_inferior_event_handler (gdb_client_data data) | |
12476 | { | |
12477 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12478 | } | |
12479 | ||
2acceee2 | 12480 | static void |
6a3753b3 | 12481 | remote_async (struct target_ops *ops, int enable) |
2acceee2 | 12482 | { |
5d93a237 TT |
12483 | struct remote_state *rs = get_remote_state (); |
12484 | ||
6a3753b3 | 12485 | if (enable) |
2acceee2 | 12486 | { |
88b496c3 | 12487 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
12488 | |
12489 | /* If there are pending events in the stop reply queue tell the | |
12490 | event loop to process them. */ | |
12491 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12492 | mark_async_event_handler (remote_async_inferior_event_token); | |
2acceee2 JM |
12493 | } |
12494 | else | |
b7d2e916 PA |
12495 | { |
12496 | serial_async (rs->remote_desc, NULL, NULL); | |
12497 | clear_async_event_handler (remote_async_inferior_event_token); | |
12498 | } | |
6426a772 JM |
12499 | } |
12500 | ||
5a2468f5 | 12501 | static void |
c2d11a7d | 12502 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 12503 | { |
635c7e8a | 12504 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
12505 | } |
12506 | ||
d471ea57 AC |
12507 | static void |
12508 | show_remote_cmd (char *args, int from_tty) | |
12509 | { | |
37a105a1 | 12510 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 12511 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
12512 | struct cleanup *showlist_chain; |
12513 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 12514 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
12515 | |
12516 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12517 | for (; list != NULL; list = list->next) | |
12518 | if (strcmp (list->name, "Z-packet") == 0) | |
12519 | continue; | |
427c3a89 DJ |
12520 | else if (list->type == not_set_cmd) |
12521 | /* Alias commands are exactly like the original, except they | |
12522 | don't have the normal type. */ | |
12523 | continue; | |
12524 | else | |
37a105a1 DJ |
12525 | { |
12526 | struct cleanup *option_chain | |
12527 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 12528 | |
37a105a1 DJ |
12529 | ui_out_field_string (uiout, "name", list->name); |
12530 | ui_out_text (uiout, ": "); | |
427c3a89 | 12531 | if (list->type == show_cmd) |
5b9afe8a | 12532 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
12533 | else |
12534 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
12535 | /* Close the tuple. */ |
12536 | do_cleanups (option_chain); | |
12537 | } | |
427c3a89 DJ |
12538 | |
12539 | /* Close the tuple. */ | |
12540 | do_cleanups (showlist_chain); | |
d471ea57 | 12541 | } |
5a2468f5 | 12542 | |
0f71a2f6 | 12543 | |
23860348 | 12544 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
12545 | static void |
12546 | remote_new_objfile (struct objfile *objfile) | |
12547 | { | |
5d93a237 TT |
12548 | struct remote_state *rs = get_remote_state (); |
12549 | ||
12550 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
36d25514 | 12551 | remote_check_symbols (); |
dc8acb97 MS |
12552 | } |
12553 | ||
00bf0b85 SS |
12554 | /* Pull all the tracepoints defined on the target and create local |
12555 | data structures representing them. We don't want to create real | |
12556 | tracepoints yet, we don't want to mess up the user's existing | |
12557 | collection. */ | |
12558 | ||
12559 | static int | |
ab6617cc | 12560 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
d5551862 | 12561 | { |
00bf0b85 SS |
12562 | struct remote_state *rs = get_remote_state (); |
12563 | char *p; | |
d5551862 | 12564 | |
00bf0b85 SS |
12565 | /* Ask for a first packet of tracepoint definition. */ |
12566 | putpkt ("qTfP"); | |
12567 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12568 | p = rs->buf; | |
12569 | while (*p && *p != 'l') | |
d5551862 | 12570 | { |
00bf0b85 SS |
12571 | parse_tracepoint_definition (p, utpp); |
12572 | /* Ask for another packet of tracepoint definition. */ | |
12573 | putpkt ("qTsP"); | |
12574 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12575 | p = rs->buf; | |
d5551862 | 12576 | } |
00bf0b85 | 12577 | return 0; |
d5551862 SS |
12578 | } |
12579 | ||
00bf0b85 | 12580 | static int |
181e3713 TT |
12581 | remote_upload_trace_state_variables (struct target_ops *self, |
12582 | struct uploaded_tsv **utsvp) | |
d5551862 | 12583 | { |
00bf0b85 | 12584 | struct remote_state *rs = get_remote_state (); |
d5551862 | 12585 | char *p; |
d5551862 | 12586 | |
00bf0b85 SS |
12587 | /* Ask for a first packet of variable definition. */ |
12588 | putpkt ("qTfV"); | |
d5551862 SS |
12589 | getpkt (&rs->buf, &rs->buf_size, 0); |
12590 | p = rs->buf; | |
00bf0b85 | 12591 | while (*p && *p != 'l') |
d5551862 | 12592 | { |
00bf0b85 SS |
12593 | parse_tsv_definition (p, utsvp); |
12594 | /* Ask for another packet of variable definition. */ | |
12595 | putpkt ("qTsV"); | |
d5551862 SS |
12596 | getpkt (&rs->buf, &rs->buf_size, 0); |
12597 | p = rs->buf; | |
12598 | } | |
00bf0b85 | 12599 | return 0; |
d5551862 SS |
12600 | } |
12601 | ||
c1e36e3e PA |
12602 | /* The "set/show range-stepping" show hook. */ |
12603 | ||
12604 | static void | |
12605 | show_range_stepping (struct ui_file *file, int from_tty, | |
12606 | struct cmd_list_element *c, | |
12607 | const char *value) | |
12608 | { | |
12609 | fprintf_filtered (file, | |
12610 | _("Debugger's willingness to use range stepping " | |
12611 | "is %s.\n"), value); | |
12612 | } | |
12613 | ||
12614 | /* The "set/show range-stepping" set hook. */ | |
12615 | ||
12616 | static void | |
12617 | set_range_stepping (char *ignore_args, int from_tty, | |
12618 | struct cmd_list_element *c) | |
12619 | { | |
5d93a237 TT |
12620 | struct remote_state *rs = get_remote_state (); |
12621 | ||
c1e36e3e PA |
12622 | /* Whene enabling, check whether range stepping is actually |
12623 | supported by the target, and warn if not. */ | |
12624 | if (use_range_stepping) | |
12625 | { | |
5d93a237 | 12626 | if (rs->remote_desc != NULL) |
c1e36e3e | 12627 | { |
4082afcc | 12628 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
c1e36e3e PA |
12629 | remote_vcont_probe (rs); |
12630 | ||
4082afcc | 12631 | if (packet_support (PACKET_vCont) == PACKET_ENABLE |
c1e36e3e PA |
12632 | && rs->supports_vCont.r) |
12633 | return; | |
12634 | } | |
12635 | ||
12636 | warning (_("Range stepping is not supported by the current target")); | |
12637 | } | |
12638 | } | |
12639 | ||
c906108c | 12640 | void |
fba45db2 | 12641 | _initialize_remote (void) |
c906108c | 12642 | { |
ea9c271d | 12643 | struct remote_state *rs; |
9a7071a8 | 12644 | struct cmd_list_element *cmd; |
6f937416 | 12645 | const char *cmd_name; |
ea9c271d | 12646 | |
0f71a2f6 | 12647 | /* architecture specific data */ |
2bc416ba | 12648 | remote_gdbarch_data_handle = |
23860348 | 12649 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
12650 | remote_g_packet_data_handle = |
12651 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 12652 | |
ea9c271d DJ |
12653 | /* Initialize the per-target state. At the moment there is only one |
12654 | of these, not one per target. Only one target is active at a | |
cf792862 TT |
12655 | time. */ |
12656 | remote_state = new_remote_state (); | |
ea9c271d | 12657 | |
c906108c SS |
12658 | init_remote_ops (); |
12659 | add_target (&remote_ops); | |
12660 | ||
12661 | init_extended_remote_ops (); | |
12662 | add_target (&extended_remote_ops); | |
cce74817 | 12663 | |
dc8acb97 | 12664 | /* Hook into new objfile notification. */ |
06d3b283 | 12665 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
12666 | /* We're no longer interested in notification events of an inferior |
12667 | when it exits. */ | |
12668 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 12669 | |
b803fb0f | 12670 | /* Set up signal handlers. */ |
934b9bac | 12671 | async_sigint_remote_token = |
b803fb0f | 12672 | create_async_signal_handler (async_remote_interrupt, NULL); |
934b9bac | 12673 | async_sigint_remote_twice_token = |
6d549500 | 12674 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 12675 | |
c906108c SS |
12676 | #if 0 |
12677 | init_remote_threadtests (); | |
12678 | #endif | |
12679 | ||
722247f1 | 12680 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 12681 | /* set/show remote ... */ |
d471ea57 | 12682 | |
1bedd215 | 12683 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
12684 | Remote protocol specific variables\n\ |
12685 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12686 | the packets being used"), |
cff3e48b | 12687 | &remote_set_cmdlist, "set remote ", |
23860348 | 12688 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 12689 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
12690 | Remote protocol specific variables\n\ |
12691 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 12692 | the packets being used"), |
cff3e48b | 12693 | &remote_show_cmdlist, "show remote ", |
23860348 | 12694 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 12695 | |
1a966eab AC |
12696 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
12697 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
12698 | Argument is a single section name (default: all loaded sections).\n\ |
12699 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
12700 | &cmdlist); |
12701 | ||
1a966eab AC |
12702 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
12703 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
12704 | maintenance packet TEXT\n\ |
12705 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12706 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12707 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 12708 | terminating `#' character and checksum."), |
c906108c SS |
12709 | &maintenancelist); |
12710 | ||
7915a72c AC |
12711 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
12712 | Set whether to send break if interrupted."), _("\ | |
12713 | Show whether to send break if interrupted."), _("\ | |
12714 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 12715 | set_remotebreak, show_remotebreak, |
e707bbc2 | 12716 | &setlist, &showlist); |
9a7071a8 JB |
12717 | cmd_name = "remotebreak"; |
12718 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12719 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12720 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12721 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12722 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12723 | ||
12724 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
12725 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12726 | _("\ | |
9a7071a8 JB |
12727 | Set interrupt sequence to remote target."), _("\ |
12728 | Show interrupt sequence to remote target."), _("\ | |
12729 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12730 | NULL, show_interrupt_sequence, | |
12731 | &remote_set_cmdlist, | |
12732 | &remote_show_cmdlist); | |
12733 | ||
12734 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12735 | &interrupt_on_connect, _("\ | |
12736 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12737 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12738 | If set, interrupt sequence is sent to remote target."), | |
12739 | NULL, NULL, | |
12740 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 12741 | |
23860348 | 12742 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 12743 | |
1a966eab AC |
12744 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
12745 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 12746 | &setlist); |
1a966eab AC |
12747 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
12748 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
12749 | &showlist); |
12750 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
12751 | set_memory_write_packet_size, _("\ |
12752 | Set the maximum number of bytes per memory-write packet.\n\ | |
12753 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12754 | default packet size. The actual limit is further reduced\n\ | |
12755 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12756 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12757 | &remote_set_cmdlist); |
12758 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
12759 | set_memory_read_packet_size, _("\ |
12760 | Set the maximum number of bytes per memory-read packet.\n\ | |
12761 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12762 | default packet size. The actual limit is further reduced\n\ | |
12763 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12764 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
12765 | &remote_set_cmdlist); |
12766 | add_cmd ("memory-write-packet-size", no_class, | |
12767 | show_memory_write_packet_size, | |
1a966eab | 12768 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
12769 | &remote_show_cmdlist); |
12770 | add_cmd ("memory-read-packet-size", no_class, | |
12771 | show_memory_read_packet_size, | |
1a966eab | 12772 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 12773 | &remote_show_cmdlist); |
c906108c | 12774 | |
b3f42336 | 12775 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
12776 | &remote_hw_watchpoint_limit, _("\ |
12777 | Set the maximum number of target hardware watchpoints."), _("\ | |
12778 | Show the maximum number of target hardware watchpoints."), _("\ | |
12779 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12780 | NULL, NULL, /* FIXME: i18n: The maximum |
12781 | number of target hardware | |
12782 | watchpoints is %s. */ | |
b3f42336 | 12783 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
12784 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12785 | &remote_hw_watchpoint_length_limit, _("\ | |
12786 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12787 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12788 | Specify a negative limit for unlimited."), | |
12789 | NULL, NULL, /* FIXME: i18n: The maximum | |
12790 | length (in bytes) of a target | |
12791 | hardware watchpoint is %s. */ | |
12792 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 12793 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
12794 | &remote_hw_breakpoint_limit, _("\ |
12795 | Set the maximum number of target hardware breakpoints."), _("\ | |
12796 | Show the maximum number of target hardware breakpoints."), _("\ | |
12797 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
12798 | NULL, NULL, /* FIXME: i18n: The maximum |
12799 | number of target hardware | |
12800 | breakpoints is %s. */ | |
b3f42336 | 12801 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 12802 | |
1b493192 PA |
12803 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12804 | &remote_address_size, _("\ | |
4d28ad1e AC |
12805 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12806 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
12807 | NULL, |
12808 | NULL, /* FIXME: i18n: */ | |
12809 | &setlist, &showlist); | |
c906108c | 12810 | |
ca4f7f8b PA |
12811 | init_all_packet_configs (); |
12812 | ||
444abaca | 12813 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 12814 | "X", "binary-download", 1); |
0f71a2f6 | 12815 | |
444abaca | 12816 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 12817 | "vCont", "verbose-resume", 0); |
506fb367 | 12818 | |
89be2091 DJ |
12819 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
12820 | "QPassSignals", "pass-signals", 0); | |
12821 | ||
9b224c5e PA |
12822 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12823 | "QProgramSignals", "program-signals", 0); | |
12824 | ||
444abaca | 12825 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 12826 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 12827 | |
444abaca | 12828 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 12829 | "P", "set-register", 1); |
d471ea57 | 12830 | |
444abaca | 12831 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 12832 | "p", "fetch-register", 1); |
b96ec7ac | 12833 | |
444abaca | 12834 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 12835 | "Z0", "software-breakpoint", 0); |
d471ea57 | 12836 | |
444abaca | 12837 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 12838 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 12839 | |
444abaca | 12840 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 12841 | "Z2", "write-watchpoint", 0); |
d471ea57 | 12842 | |
444abaca | 12843 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 12844 | "Z3", "read-watchpoint", 0); |
d471ea57 | 12845 | |
444abaca | 12846 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 12847 | "Z4", "access-watchpoint", 0); |
d471ea57 | 12848 | |
0876f84a DJ |
12849 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
12850 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 12851 | |
c78fa86a GB |
12852 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
12853 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
12854 | ||
23181151 DJ |
12855 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12856 | "qXfer:features:read", "target-features", 0); | |
12857 | ||
cfa9d6d9 DJ |
12858 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
12859 | "qXfer:libraries:read", "library-info", 0); | |
12860 | ||
2268b414 JK |
12861 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12862 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12863 | ||
fd79ecee DJ |
12864 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12865 | "qXfer:memory-map:read", "memory-map", 0); | |
12866 | ||
0e7f50da UW |
12867 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
12868 | "qXfer:spu:read", "read-spu-object", 0); | |
12869 | ||
12870 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12871 | "qXfer:spu:write", "write-spu-object", 0); | |
12872 | ||
07e059b5 VP |
12873 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
12874 | "qXfer:osdata:read", "osdata", 0); | |
12875 | ||
dc146f7c VP |
12876 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12877 | "qXfer:threads:read", "threads", 0); | |
12878 | ||
4aa995e1 PA |
12879 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12880 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12881 | ||
12882 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12883 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12884 | ||
b3b9301e PA |
12885 | add_packet_config_cmd |
12886 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 12887 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 12888 | |
169081d0 TG |
12889 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
12890 | "qXfer:uib:read", "unwind-info-block", 0); | |
12891 | ||
444abaca | 12892 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 12893 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
12894 | 0); |
12895 | ||
711e434b PM |
12896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
12897 | "qGetTIBAddr", "get-thread-information-block-address", | |
12898 | 0); | |
12899 | ||
40ab02ce MS |
12900 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
12901 | "bc", "reverse-continue", 0); | |
12902 | ||
12903 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
12904 | "bs", "reverse-step", 0); | |
12905 | ||
be2a5f71 DJ |
12906 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
12907 | "qSupported", "supported-packets", 0); | |
12908 | ||
08388c79 DE |
12909 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
12910 | "qSearch:memory", "search-memory", 0); | |
12911 | ||
bd3eecc3 PA |
12912 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
12913 | "qTStatus", "trace-status", 0); | |
12914 | ||
15a201c8 GB |
12915 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
12916 | "vFile:setfs", "hostio-setfs", 0); | |
12917 | ||
a6b151f1 DJ |
12918 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
12919 | "vFile:open", "hostio-open", 0); | |
12920 | ||
12921 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
12922 | "vFile:pread", "hostio-pread", 0); | |
12923 | ||
12924 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
12925 | "vFile:pwrite", "hostio-pwrite", 0); | |
12926 | ||
12927 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
12928 | "vFile:close", "hostio-close", 0); | |
12929 | ||
12930 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
12931 | "vFile:unlink", "hostio-unlink", 0); | |
12932 | ||
b9e7b9c3 UW |
12933 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
12934 | "vFile:readlink", "hostio-readlink", 0); | |
12935 | ||
0a93529c GB |
12936 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
12937 | "vFile:fstat", "hostio-fstat", 0); | |
12938 | ||
2d717e4f DJ |
12939 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
12940 | "vAttach", "attach", 0); | |
12941 | ||
12942 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
12943 | "vRun", "run", 0); | |
12944 | ||
a6f3e723 SL |
12945 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
12946 | "QStartNoAckMode", "noack", 0); | |
12947 | ||
82f73884 PA |
12948 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
12949 | "vKill", "kill", 0); | |
12950 | ||
0b16c5cf PA |
12951 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
12952 | "qAttached", "query-attached", 0); | |
12953 | ||
782b2b07 | 12954 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
12955 | "ConditionalTracepoints", |
12956 | "conditional-tracepoints", 0); | |
3788aec7 LM |
12957 | |
12958 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
12959 | "ConditionalBreakpoints", | |
12960 | "conditional-breakpoints", 0); | |
12961 | ||
d3ce09f5 SS |
12962 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
12963 | "BreakpointCommands", | |
12964 | "breakpoint-commands", 0); | |
12965 | ||
7a697b8d SS |
12966 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
12967 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 12968 | |
409873ef SS |
12969 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
12970 | "TracepointSource", "TracepointSource", 0); | |
12971 | ||
d914c394 SS |
12972 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
12973 | "QAllow", "allow", 0); | |
12974 | ||
0fb4aa4b PA |
12975 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
12976 | "StaticTracepoints", "static-tracepoints", 0); | |
12977 | ||
1e4d1764 YQ |
12978 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
12979 | "InstallInTrace", "install-in-trace", 0); | |
12980 | ||
0fb4aa4b PA |
12981 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
12982 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
12983 | ||
78d85199 YQ |
12984 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
12985 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
12986 | ||
03583c20 UW |
12987 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
12988 | "QDisableRandomization", "disable-randomization", 0); | |
12989 | ||
d1feda86 YQ |
12990 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
12991 | "QAgent", "agent", 0); | |
12992 | ||
f6f899bf HAQ |
12993 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
12994 | "QTBuffer:size", "trace-buffer-size", 0); | |
12995 | ||
9accd112 MM |
12996 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
12997 | "Qbtrace:off", "disable-btrace", 0); | |
12998 | ||
12999 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
13000 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13001 | ||
13002 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13003 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
13004 | |
13005 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13006 | "qXfer:btrace", "read-btrace", 0); | |
13007 | ||
f4abbc16 MM |
13008 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13009 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13010 | ||
d33501a5 MM |
13011 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
13012 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13013 | ||
f7e6eed5 PA |
13014 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
13015 | "swbreak-feature", "swbreak-feature", 0); | |
13016 | ||
13017 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13018 | "hwbreak-feature", "hwbreak-feature", 0); | |
13019 | ||
89245bc0 DB |
13020 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
13021 | "fork-event-feature", "fork-event-feature", 0); | |
13022 | ||
13023 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13024 | "vfork-event-feature", "vfork-event-feature", 0); | |
13025 | ||
b20a6524 MM |
13026 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
13027 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13028 | ||
0b736949 DB |
13029 | /* Assert that we've registered "set remote foo-packet" commands |
13030 | for all packet configs. */ | |
ca4f7f8b PA |
13031 | { |
13032 | int i; | |
13033 | ||
13034 | for (i = 0; i < PACKET_MAX; i++) | |
13035 | { | |
13036 | /* Ideally all configs would have a command associated. Some | |
13037 | still don't though. */ | |
13038 | int excepted; | |
13039 | ||
13040 | switch (i) | |
13041 | { | |
13042 | case PACKET_QNonStop: | |
13043 | case PACKET_multiprocess_feature: | |
13044 | case PACKET_EnableDisableTracepoints_feature: | |
13045 | case PACKET_tracenz_feature: | |
13046 | case PACKET_DisconnectedTracing_feature: | |
13047 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
13048 | case PACKET_qCRC: |
13049 | /* Additions to this list need to be well justified: | |
13050 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
13051 | excepted = 1; |
13052 | break; | |
13053 | default: | |
13054 | excepted = 0; | |
13055 | break; | |
13056 | } | |
13057 | ||
13058 | /* This catches both forgetting to add a config command, and | |
13059 | forgetting to remove a packet from the exception list. */ | |
13060 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13061 | } | |
13062 | } | |
13063 | ||
37a105a1 DJ |
13064 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13065 | Z sub-packet has its own set and show commands, but users may | |
13066 | have sets to this variable in their .gdbinit files (or in their | |
13067 | documentation). */ | |
e9e68a56 | 13068 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
13069 | &remote_Z_packet_detect, _("\ |
13070 | Set use of remote protocol `Z' packets"), _("\ | |
13071 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 13072 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 13073 | packets."), |
e9e68a56 | 13074 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
13075 | show_remote_protocol_Z_packet_cmd, |
13076 | /* FIXME: i18n: Use of remote protocol | |
13077 | `Z' packets is %s. */ | |
e9e68a56 | 13078 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 13079 | |
a6b151f1 DJ |
13080 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
13081 | Manipulate files on the remote system\n\ | |
13082 | Transfer files to and from the remote target system."), | |
13083 | &remote_cmdlist, "remote ", | |
13084 | 0 /* allow-unknown */, &cmdlist); | |
13085 | ||
13086 | add_cmd ("put", class_files, remote_put_command, | |
13087 | _("Copy a local file to the remote system."), | |
13088 | &remote_cmdlist); | |
13089 | ||
13090 | add_cmd ("get", class_files, remote_get_command, | |
13091 | _("Copy a remote file to the local system."), | |
13092 | &remote_cmdlist); | |
13093 | ||
13094 | add_cmd ("delete", class_files, remote_delete_command, | |
13095 | _("Delete a remote file."), | |
13096 | &remote_cmdlist); | |
13097 | ||
2d717e4f DJ |
13098 | remote_exec_file = xstrdup (""); |
13099 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
13100 | &remote_exec_file, _("\ | |
13101 | Set the remote pathname for \"run\""), _("\ | |
13102 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
13103 | &remote_set_cmdlist, &remote_show_cmdlist); | |
13104 | ||
c1e36e3e PA |
13105 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13106 | &use_range_stepping, _("\ | |
13107 | Enable or disable range stepping."), _("\ | |
13108 | Show whether target-assisted range stepping is enabled."), _("\ | |
13109 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13110 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13111 | of issuing multiple single-steps. This speeds up source level\n\ | |
13112 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13113 | stepping is supported by the target. The default is on."), | |
13114 | set_range_stepping, | |
13115 | show_range_stepping, | |
13116 | &setlist, | |
13117 | &showlist); | |
13118 | ||
449092f6 CV |
13119 | /* Eventually initialize fileio. See fileio.c */ |
13120 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 | 13121 | |
ba348170 | 13122 | /* Take advantage of the fact that the TID field is not used, to tag |
79d7f229 | 13123 | special ptids with it set to != 0. */ |
ba348170 PA |
13124 | magic_null_ptid = ptid_build (42000, -1, 1); |
13125 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13126 | any_thread_ptid = ptid_build (42000, 0, 1); | |
35b1e5cc SS |
13127 | |
13128 | target_buf_size = 2048; | |
13129 | target_buf = xmalloc (target_buf_size); | |
c906108c | 13130 | } |
10760264 | 13131 |