Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1988-2012 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 SS |
22 | #include "defs.h" |
23 | #include "gdb_string.h" | |
24 | #include <ctype.h> | |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
1ff9c3d6 | 39 | #include "gdb_assert.h" |
6867ae3e | 40 | #include "observer.h" |
a77053c2 | 41 | #include "solib.h" |
37a105a1 DJ |
42 | #include "cli/cli-decode.h" |
43 | #include "cli/cli-setshow.h" | |
424163ea | 44 | #include "target-descriptions.h" |
c906108c | 45 | |
7a292a7a | 46 | #include <ctype.h> |
9846de1b | 47 | #include <sys/time.h> |
c906108c | 48 | |
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 | 58 | #include "remote-fileio.h" |
a6b151f1 | 59 | #include "gdb/fileio.h" |
3e88cf8d | 60 | #include "gdb_stat.h" |
dc146f7c | 61 | #include "xml-support.h" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
35b1e5cc SS |
65 | #include "tracepoint.h" |
66 | #include "ax.h" | |
67 | #include "ax-gdb.h" | |
68 | ||
0df8b418 | 69 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
70 | static char *target_buf; |
71 | static long target_buf_size; | |
72 | /*static*/ void | |
9355b391 SS |
73 | encode_actions (struct breakpoint *t, struct bp_location *tloc, |
74 | char ***tdp_actions, char ***stepping_actions); | |
35b1e5cc | 75 | |
6765f3e5 DJ |
76 | /* The size to align memory write packets, when practical. The protocol |
77 | does not guarantee any alignment, and gdb will generate short | |
78 | writes and unaligned writes, but even as a best-effort attempt this | |
79 | can improve bulk transfers. For instance, if a write is misaligned | |
80 | relative to the target's data bus, the stub may need to make an extra | |
81 | round trip fetching data from the target. This doesn't make a | |
82 | huge difference, but it's easy to do, so we try to be helpful. | |
83 | ||
84 | The alignment chosen is arbitrary; usually data bus width is | |
85 | important here, not the possibly larger cache line size. */ | |
86 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
87 | ||
23860348 | 88 | /* Prototypes for local functions. */ |
6426a772 JM |
89 | static void cleanup_sigint_signal_handler (void *dummy); |
90 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 91 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
92 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
93 | int forever); | |
6426a772 | 94 | |
a14ed312 KB |
95 | static void handle_remote_sigint (int); |
96 | static void handle_remote_sigint_twice (int); | |
97 | static void async_remote_interrupt (gdb_client_data); | |
98 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 99 | |
a14ed312 | 100 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 101 | |
316f2060 | 102 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 103 | |
a14ed312 | 104 | static void remote_open (char *name, int from_tty); |
c906108c | 105 | |
a14ed312 | 106 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 107 | |
75c99385 | 108 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 109 | |
a14ed312 | 110 | static void remote_close (int quitting); |
c906108c | 111 | |
136d6dae | 112 | static void remote_mourn (struct target_ops *ops); |
c906108c | 113 | |
a14ed312 | 114 | static void extended_remote_restart (void); |
c906108c | 115 | |
136d6dae | 116 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 117 | |
a14ed312 | 118 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 119 | |
6d820c5c | 120 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 121 | |
a14ed312 | 122 | static int readchar (int timeout); |
c906108c | 123 | |
7d85a9c0 | 124 | static void remote_kill (struct target_ops *ops); |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
75c99385 PA |
128 | static int remote_can_async_p (void); |
129 | ||
130 | static int remote_is_async_p (void); | |
131 | ||
132 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
133 | void *context), void *context); | |
134 | ||
136d6dae | 135 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt (int signo); |
c906108c | 138 | |
a14ed312 | 139 | static void remote_interrupt_twice (int signo); |
7a292a7a | 140 | |
a14ed312 | 141 | static void interrupt_query (void); |
c906108c | 142 | |
79d7f229 PA |
143 | static void set_general_thread (struct ptid ptid); |
144 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 145 | |
a14ed312 | 146 | static void get_offsets (void); |
c906108c | 147 | |
6d820c5c DJ |
148 | static void skip_frame (void); |
149 | ||
150 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 151 | |
a14ed312 | 152 | static int hexnumlen (ULONGEST num); |
c906108c | 153 | |
a14ed312 | 154 | static void init_remote_ops (void); |
c906108c | 155 | |
a14ed312 | 156 | static void init_extended_remote_ops (void); |
c906108c | 157 | |
94cc34af | 158 | static void remote_stop (ptid_t); |
c906108c | 159 | |
a14ed312 | 160 | static int ishex (int ch, int *val); |
c906108c | 161 | |
a14ed312 | 162 | static int stubhex (int ch); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumstr (char *, ULONGEST); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 167 | |
a14ed312 | 168 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 169 | |
a14ed312 | 170 | static void print_packet (char *); |
c906108c | 171 | |
a14ed312 | 172 | static void compare_sections_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void packet_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 177 | |
39f77062 | 178 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 179 | |
a14ed312 | 180 | static void remote_find_new_threads (void); |
c906108c | 181 | |
79d7f229 | 182 | static void record_currthread (ptid_t currthread); |
c906108c | 183 | |
30559e10 | 184 | static int fromhex (int a); |
c906108c | 185 | |
00bf0b85 | 186 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 187 | |
00bf0b85 | 188 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 189 | |
a14ed312 | 190 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 191 | |
a14ed312 | 192 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 193 | |
5a2468f5 | 194 | struct packet_config; |
5a2468f5 | 195 | |
a14ed312 | 196 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 197 | |
d471ea57 | 198 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 199 | |
bb572ddd DJ |
200 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
201 | struct cmd_list_element *c); | |
202 | ||
203 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
204 | int from_tty, | |
205 | struct cmd_list_element *c, | |
206 | const char *value); | |
207 | ||
82f73884 PA |
208 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
209 | static ptid_t read_ptid (char *buf, char **obuf); | |
210 | ||
d914c394 SS |
211 | static void remote_set_permissions (void); |
212 | ||
d5551862 | 213 | struct remote_state; |
00bf0b85 | 214 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 215 | |
00bf0b85 SS |
216 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
217 | ||
218 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
219 | ||
c8d104ad PA |
220 | static void remote_query_supported (void); |
221 | ||
222 | static void remote_check_symbols (struct objfile *objfile); | |
223 | ||
a14ed312 | 224 | void _initialize_remote (void); |
c906108c | 225 | |
74531fed PA |
226 | struct stop_reply; |
227 | static struct stop_reply *stop_reply_xmalloc (void); | |
228 | static void stop_reply_xfree (struct stop_reply *); | |
229 | static void do_stop_reply_xfree (void *arg); | |
230 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
231 | static void push_stop_reply (struct stop_reply *); | |
232 | static void remote_get_pending_stop_replies (void); | |
233 | static void discard_pending_stop_replies (int pid); | |
234 | static int peek_stop_reply (ptid_t ptid); | |
235 | ||
236 | static void remote_async_inferior_event_handler (gdb_client_data); | |
237 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
238 | ||
d3fd5342 PA |
239 | static void remote_terminal_ours (void); |
240 | ||
d962ef82 DJ |
241 | static int remote_read_description_p (struct target_ops *target); |
242 | ||
176a6961 | 243 | static void remote_console_output (char *msg); |
dde08ee1 | 244 | |
74531fed PA |
245 | /* The non-stop remote protocol provisions for one pending stop reply. |
246 | This is where we keep it until it is acknowledged. */ | |
247 | ||
248 | static struct stop_reply *pending_stop_reply = NULL; | |
249 | ||
a6b151f1 DJ |
250 | /* For "remote". */ |
251 | ||
252 | static struct cmd_list_element *remote_cmdlist; | |
253 | ||
bb572ddd DJ |
254 | /* For "set remote" and "show remote". */ |
255 | ||
256 | static struct cmd_list_element *remote_set_cmdlist; | |
257 | static struct cmd_list_element *remote_show_cmdlist; | |
258 | ||
ea9c271d DJ |
259 | /* Description of the remote protocol state for the currently |
260 | connected target. This is per-target state, and independent of the | |
261 | selected architecture. */ | |
262 | ||
263 | struct remote_state | |
264 | { | |
265 | /* A buffer to use for incoming packets, and its current size. The | |
266 | buffer is grown dynamically for larger incoming packets. | |
267 | Outgoing packets may also be constructed in this buffer. | |
268 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
269 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
270 | packets. */ | |
271 | char *buf; | |
272 | long buf_size; | |
be2a5f71 DJ |
273 | |
274 | /* If we negotiated packet size explicitly (and thus can bypass | |
275 | heuristics for the largest packet size that will not overflow | |
276 | a buffer in the stub), this will be set to that packet size. | |
277 | Otherwise zero, meaning to use the guessed size. */ | |
278 | long explicit_packet_size; | |
2d717e4f DJ |
279 | |
280 | /* remote_wait is normally called when the target is running and | |
281 | waits for a stop reply packet. But sometimes we need to call it | |
282 | when the target is already stopped. We can send a "?" packet | |
283 | and have remote_wait read the response. Or, if we already have | |
284 | the response, we can stash it in BUF and tell remote_wait to | |
285 | skip calling getpkt. This flag is set when BUF contains a | |
286 | stop reply packet and the target is not waiting. */ | |
287 | int cached_wait_status; | |
a6f3e723 SL |
288 | |
289 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
290 | expect acks from each other. The connection is assumed to be | |
291 | reliable. */ | |
292 | int noack_mode; | |
82f73884 PA |
293 | |
294 | /* True if we're connected in extended remote mode. */ | |
295 | int extended; | |
296 | ||
297 | /* True if the stub reported support for multi-process | |
298 | extensions. */ | |
299 | int multi_process_aware; | |
e24a49d8 PA |
300 | |
301 | /* True if we resumed the target and we're waiting for the target to | |
302 | stop. In the mean time, we can't start another command/query. | |
303 | The remote server wouldn't be ready to process it, so we'd | |
304 | timeout waiting for a reply that would never come and eventually | |
305 | we'd close the connection. This can happen in asynchronous mode | |
306 | because we allow GDB commands while the target is running. */ | |
307 | int waiting_for_stop_reply; | |
74531fed PA |
308 | |
309 | /* True if the stub reports support for non-stop mode. */ | |
310 | int non_stop_aware; | |
311 | ||
312 | /* True if the stub reports support for vCont;t. */ | |
313 | int support_vCont_t; | |
782b2b07 SS |
314 | |
315 | /* True if the stub reports support for conditional tracepoints. */ | |
316 | int cond_tracepoints; | |
3a29589a | 317 | |
7a697b8d SS |
318 | /* True if the stub reports support for fast tracepoints. */ |
319 | int fast_tracepoints; | |
320 | ||
0fb4aa4b PA |
321 | /* True if the stub reports support for static tracepoints. */ |
322 | int static_tracepoints; | |
323 | ||
1e4d1764 YQ |
324 | /* True if the stub reports support for installing tracepoint while |
325 | tracing. */ | |
326 | int install_in_trace; | |
327 | ||
d5551862 SS |
328 | /* True if the stub can continue running a trace while GDB is |
329 | disconnected. */ | |
330 | int disconnected_tracing; | |
331 | ||
d248b706 KY |
332 | /* True if the stub reports support for enabling and disabling |
333 | tracepoints while a trace experiment is running. */ | |
334 | int enable_disable_tracepoints; | |
335 | ||
3065dfb6 SS |
336 | /* True if the stub can collect strings using tracenz bytecode. */ |
337 | int string_tracing; | |
338 | ||
3a29589a DJ |
339 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
340 | responded to that. */ | |
341 | int ctrlc_pending_p; | |
ea9c271d DJ |
342 | }; |
343 | ||
dc146f7c VP |
344 | /* Private data that we'll store in (struct thread_info)->private. */ |
345 | struct private_thread_info | |
346 | { | |
347 | char *extra; | |
348 | int core; | |
349 | }; | |
350 | ||
351 | static void | |
352 | free_private_thread_info (struct private_thread_info *info) | |
353 | { | |
354 | xfree (info->extra); | |
355 | xfree (info); | |
356 | } | |
357 | ||
82f73884 PA |
358 | /* Returns true if the multi-process extensions are in effect. */ |
359 | static int | |
360 | remote_multi_process_p (struct remote_state *rs) | |
361 | { | |
362 | return rs->extended && rs->multi_process_aware; | |
363 | } | |
364 | ||
ea9c271d DJ |
365 | /* This data could be associated with a target, but we do not always |
366 | have access to the current target when we need it, so for now it is | |
367 | static. This will be fine for as long as only one target is in use | |
368 | at a time. */ | |
369 | static struct remote_state remote_state; | |
370 | ||
371 | static struct remote_state * | |
0b83947e | 372 | get_remote_state_raw (void) |
ea9c271d DJ |
373 | { |
374 | return &remote_state; | |
375 | } | |
376 | ||
377 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 378 | |
ad10f812 AC |
379 | struct packet_reg |
380 | { | |
381 | long offset; /* Offset into G packet. */ | |
382 | long regnum; /* GDB's internal register number. */ | |
383 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 384 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 385 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 386 | at present. */ |
1cf3db46 | 387 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 388 | at present. */ |
ad10f812 AC |
389 | }; |
390 | ||
ea9c271d | 391 | struct remote_arch_state |
d01949b6 | 392 | { |
ad10f812 AC |
393 | /* Description of the remote protocol registers. */ |
394 | long sizeof_g_packet; | |
b323314b AC |
395 | |
396 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 397 | (making an array gdbarch_num_regs in size). */ |
b323314b | 398 | struct packet_reg *regs; |
ad10f812 | 399 | |
d01949b6 AC |
400 | /* This is the size (in chars) of the first response to the ``g'' |
401 | packet. It is used as a heuristic when determining the maximum | |
402 | size of memory-read and memory-write packets. A target will | |
403 | typically only reserve a buffer large enough to hold the ``g'' | |
404 | packet. The size does not include packet overhead (headers and | |
23860348 | 405 | trailers). */ |
d01949b6 AC |
406 | long actual_register_packet_size; |
407 | ||
408 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 409 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
410 | long remote_packet_size; |
411 | }; | |
412 | ||
35b1e5cc SS |
413 | long sizeof_pkt = 2000; |
414 | ||
415 | /* Utility: generate error from an incoming stub packet. */ | |
416 | static void | |
417 | trace_error (char *buf) | |
418 | { | |
419 | if (*buf++ != 'E') | |
420 | return; /* not an error msg */ | |
421 | switch (*buf) | |
422 | { | |
423 | case '1': /* malformed packet error */ | |
424 | if (*++buf == '0') /* general case: */ | |
425 | error (_("remote.c: error in outgoing packet.")); | |
426 | else | |
427 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
428 | strtol (buf, NULL, 16)); | |
429 | case '2': | |
430 | error (_("trace API error 0x%s."), ++buf); | |
431 | default: | |
432 | error (_("Target returns error code '%s'."), buf); | |
433 | } | |
434 | } | |
435 | ||
436 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
437 | static char * | |
438 | remote_get_noisy_reply (char **buf_p, | |
439 | long *sizeof_buf) | |
440 | { | |
441 | do /* Loop on reply from remote stub. */ | |
442 | { | |
443 | char *buf; | |
a744cf53 | 444 | |
0df8b418 | 445 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
446 | getpkt (buf_p, sizeof_buf, 0); |
447 | buf = *buf_p; | |
ad91cd99 | 448 | if (buf[0] == 'E') |
35b1e5cc | 449 | trace_error (buf); |
dde08ee1 PA |
450 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
451 | { | |
452 | ULONGEST ul; | |
453 | CORE_ADDR from, to, org_to; | |
454 | char *p, *pp; | |
455 | int adjusted_size = 0; | |
456 | volatile struct gdb_exception ex; | |
457 | ||
458 | p = buf + strlen ("qRelocInsn:"); | |
459 | pp = unpack_varlen_hex (p, &ul); | |
460 | if (*pp != ';') | |
cb91c06a | 461 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
462 | from = ul; |
463 | ||
464 | p = pp + 1; | |
a9cbf802 | 465 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
466 | to = ul; |
467 | ||
468 | org_to = to; | |
469 | ||
470 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
471 | { | |
472 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
473 | } | |
474 | if (ex.reason >= 0) | |
475 | { | |
476 | adjusted_size = to - org_to; | |
477 | ||
478 | sprintf (buf, "qRelocInsn:%x", adjusted_size); | |
479 | putpkt (buf); | |
480 | } | |
481 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
482 | { | |
483 | /* Propagate memory errors silently back to the target. | |
484 | The stub may have limited the range of addresses we | |
485 | can write to, for example. */ | |
486 | putpkt ("E01"); | |
487 | } | |
488 | else | |
489 | { | |
490 | /* Something unexpectedly bad happened. Be verbose so | |
491 | we can tell what, and propagate the error back to the | |
492 | stub, so it doesn't get stuck waiting for a | |
493 | response. */ | |
494 | exception_fprintf (gdb_stderr, ex, | |
495 | _("warning: relocating instruction: ")); | |
496 | putpkt ("E01"); | |
497 | } | |
498 | } | |
ad91cd99 | 499 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
500 | remote_console_output (buf + 1); /* 'O' message from stub */ |
501 | else | |
0df8b418 | 502 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
503 | } |
504 | while (1); | |
505 | } | |
3c3bea1c | 506 | |
d01949b6 AC |
507 | /* Handle for retreving the remote protocol data from gdbarch. */ |
508 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
509 | ||
ea9c271d DJ |
510 | static struct remote_arch_state * |
511 | get_remote_arch_state (void) | |
d01949b6 | 512 | { |
1cf3db46 | 513 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
514 | } |
515 | ||
0b83947e DJ |
516 | /* Fetch the global remote target state. */ |
517 | ||
518 | static struct remote_state * | |
519 | get_remote_state (void) | |
520 | { | |
521 | /* Make sure that the remote architecture state has been | |
522 | initialized, because doing so might reallocate rs->buf. Any | |
523 | function which calls getpkt also needs to be mindful of changes | |
524 | to rs->buf, but this call limits the number of places which run | |
525 | into trouble. */ | |
526 | get_remote_arch_state (); | |
527 | ||
528 | return get_remote_state_raw (); | |
529 | } | |
530 | ||
74ca34ce DJ |
531 | static int |
532 | compare_pnums (const void *lhs_, const void *rhs_) | |
533 | { | |
534 | const struct packet_reg * const *lhs = lhs_; | |
535 | const struct packet_reg * const *rhs = rhs_; | |
536 | ||
537 | if ((*lhs)->pnum < (*rhs)->pnum) | |
538 | return -1; | |
539 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
540 | return 0; | |
541 | else | |
542 | return 1; | |
543 | } | |
544 | ||
c21236dc PA |
545 | static int |
546 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 547 | { |
74ca34ce | 548 | int regnum, num_remote_regs, offset; |
74ca34ce | 549 | struct packet_reg **remote_regs; |
ea9c271d | 550 | |
4a22f64d | 551 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 552 | { |
c21236dc | 553 | struct packet_reg *r = ®s[regnum]; |
baef701f | 554 | |
4a22f64d | 555 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
556 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
557 | r->pnum = -1; | |
558 | else | |
559 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
560 | ||
b323314b | 561 | r->regnum = regnum; |
74ca34ce DJ |
562 | } |
563 | ||
564 | /* Define the g/G packet format as the contents of each register | |
565 | with a remote protocol number, in order of ascending protocol | |
566 | number. */ | |
567 | ||
4a22f64d | 568 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 569 | * sizeof (struct packet_reg *)); |
f57d151a | 570 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 571 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 572 | regnum++) |
c21236dc PA |
573 | if (regs[regnum].pnum != -1) |
574 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 575 | |
74ca34ce DJ |
576 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
577 | compare_pnums); | |
578 | ||
579 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
580 | { | |
581 | remote_regs[regnum]->in_g_packet = 1; | |
582 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 583 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
584 | } |
585 | ||
c21236dc PA |
586 | return offset; |
587 | } | |
588 | ||
589 | /* Given the architecture described by GDBARCH, return the remote | |
590 | protocol register's number and the register's offset in the g/G | |
591 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
592 | If the target does not have a mapping for REGNUM, return false, | |
593 | otherwise, return true. */ | |
594 | ||
595 | int | |
596 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
597 | int *pnum, int *poffset) | |
598 | { | |
599 | int sizeof_g_packet; | |
600 | struct packet_reg *regs; | |
601 | struct cleanup *old_chain; | |
602 | ||
603 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
604 | ||
605 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
606 | old_chain = make_cleanup (xfree, regs); | |
607 | ||
608 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
609 | ||
610 | *pnum = regs[regnum].pnum; | |
611 | *poffset = regs[regnum].offset; | |
612 | ||
613 | do_cleanups (old_chain); | |
614 | ||
615 | return *pnum != -1; | |
616 | } | |
617 | ||
618 | static void * | |
619 | init_remote_state (struct gdbarch *gdbarch) | |
620 | { | |
621 | struct remote_state *rs = get_remote_state_raw (); | |
622 | struct remote_arch_state *rsa; | |
623 | ||
624 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
625 | ||
626 | /* Use the architecture to build a regnum<->pnum table, which will be | |
627 | 1:1 unless a feature set specifies otherwise. */ | |
628 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
629 | gdbarch_num_regs (gdbarch), | |
630 | struct packet_reg); | |
631 | ||
74ca34ce DJ |
632 | /* Record the maximum possible size of the g packet - it may turn out |
633 | to be smaller. */ | |
c21236dc | 634 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 635 | |
0df8b418 | 636 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
637 | remote stubs have a hardwired buffer size of 400 bytes |
638 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
639 | as the maximum packet-size to ensure that the packet and an extra | |
640 | NUL character can always fit in the buffer. This stops GDB | |
641 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
642 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
643 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 644 | |
ea9c271d DJ |
645 | /* This one is filled in when a ``g'' packet is received. */ |
646 | rsa->actual_register_packet_size = 0; | |
647 | ||
648 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
649 | default, adjust the size accordingly. Remember that each byte is |
650 | encoded as two characters. 32 is the overhead for the packet | |
651 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 652 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 653 | little. */ |
ea9c271d DJ |
654 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
655 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 656 | |
ea9c271d DJ |
657 | /* Make sure that the packet buffer is plenty big enough for |
658 | this architecture. */ | |
659 | if (rs->buf_size < rsa->remote_packet_size) | |
660 | { | |
661 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 662 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 663 | } |
6d820c5c | 664 | |
ea9c271d DJ |
665 | return rsa; |
666 | } | |
667 | ||
668 | /* Return the current allowed size of a remote packet. This is | |
669 | inferred from the current architecture, and should be used to | |
670 | limit the length of outgoing packets. */ | |
671 | static long | |
672 | get_remote_packet_size (void) | |
673 | { | |
be2a5f71 | 674 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
675 | struct remote_arch_state *rsa = get_remote_arch_state (); |
676 | ||
be2a5f71 DJ |
677 | if (rs->explicit_packet_size) |
678 | return rs->explicit_packet_size; | |
679 | ||
ea9c271d | 680 | return rsa->remote_packet_size; |
d01949b6 AC |
681 | } |
682 | ||
ad10f812 | 683 | static struct packet_reg * |
ea9c271d | 684 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 685 | { |
1cf3db46 | 686 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
687 | return NULL; |
688 | else | |
ad10f812 | 689 | { |
ea9c271d | 690 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 691 | |
b323314b AC |
692 | gdb_assert (r->regnum == regnum); |
693 | return r; | |
ad10f812 | 694 | } |
ad10f812 AC |
695 | } |
696 | ||
697 | static struct packet_reg * | |
ea9c271d | 698 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 699 | { |
b323314b | 700 | int i; |
a744cf53 | 701 | |
1cf3db46 | 702 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 703 | { |
ea9c271d | 704 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 705 | |
b323314b AC |
706 | if (r->pnum == pnum) |
707 | return r; | |
ad10f812 AC |
708 | } |
709 | return NULL; | |
d01949b6 AC |
710 | } |
711 | ||
3c3bea1c GS |
712 | /* FIXME: graces/2002-08-08: These variables should eventually be |
713 | bound to an instance of the target object (as in gdbarch-tdep()), | |
714 | when such a thing exists. */ | |
715 | ||
716 | /* This is set to the data address of the access causing the target | |
717 | to stop for a watchpoint. */ | |
718 | static CORE_ADDR remote_watch_data_address; | |
719 | ||
94e08568 | 720 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
721 | static int remote_stopped_by_watchpoint_p; |
722 | ||
c906108c SS |
723 | static struct target_ops remote_ops; |
724 | ||
725 | static struct target_ops extended_remote_ops; | |
726 | ||
6426a772 JM |
727 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
728 | ``forever'' still use the normal timeout mechanism. This is | |
729 | currently used by the ASYNC code to guarentee that target reads | |
730 | during the initial connect always time-out. Once getpkt has been | |
731 | modified to return a timeout indication and, in turn | |
732 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 733 | this can go away. */ |
6426a772 JM |
734 | static int wait_forever_enabled_p = 1; |
735 | ||
9a7071a8 JB |
736 | /* Allow the user to specify what sequence to send to the remote |
737 | when he requests a program interruption: Although ^C is usually | |
738 | what remote systems expect (this is the default, here), it is | |
739 | sometimes preferable to send a break. On other systems such | |
740 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
741 | is required in order to interrupt the execution. */ | |
742 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
743 | const char interrupt_sequence_break[] = "BREAK"; | |
744 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
745 | static const char *interrupt_sequence_modes[] = | |
746 | { | |
747 | interrupt_sequence_control_c, | |
748 | interrupt_sequence_break, | |
749 | interrupt_sequence_break_g, | |
750 | NULL | |
751 | }; | |
752 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
753 | ||
754 | static void | |
755 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
756 | struct cmd_list_element *c, | |
757 | const char *value) | |
758 | { | |
759 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
760 | fprintf_filtered (file, | |
761 | _("Send the ASCII ETX character (Ctrl-c) " | |
762 | "to the remote target to interrupt the " | |
763 | "execution of the program.\n")); | |
764 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
765 | fprintf_filtered (file, | |
766 | _("send a break signal to the remote target " | |
767 | "to interrupt the execution of the program.\n")); | |
768 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
769 | fprintf_filtered (file, | |
770 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
771 | "the remote target to interrupt the execution " | |
772 | "of Linux kernel.\n")); | |
773 | else | |
774 | internal_error (__FILE__, __LINE__, | |
775 | _("Invalid value for interrupt_sequence_mode: %s."), | |
776 | interrupt_sequence_mode); | |
777 | } | |
6426a772 | 778 | |
9a7071a8 JB |
779 | /* This boolean variable specifies whether interrupt_sequence is sent |
780 | to the remote target when gdb connects to it. | |
781 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
782 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
783 | static int interrupt_on_connect = 0; | |
c906108c | 784 | |
9a7071a8 JB |
785 | /* This variable is used to implement the "set/show remotebreak" commands. |
786 | Since these commands are now deprecated in favor of "set/show remote | |
787 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
788 | static int remote_break; |
789 | ||
9a7071a8 JB |
790 | static void |
791 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
792 | { | |
793 | if (remote_break) | |
794 | interrupt_sequence_mode = interrupt_sequence_break; | |
795 | else | |
796 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
797 | } | |
798 | ||
799 | static void | |
800 | show_remotebreak (struct ui_file *file, int from_tty, | |
801 | struct cmd_list_element *c, | |
802 | const char *value) | |
803 | { | |
804 | } | |
805 | ||
c906108c SS |
806 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
807 | remote_open knows that we don't have a file open when the program | |
808 | starts. */ | |
819cc324 | 809 | static struct serial *remote_desc = NULL; |
c906108c | 810 | |
c906108c SS |
811 | /* This variable sets the number of bits in an address that are to be |
812 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 813 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
814 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
815 | initial implementation of remote.c restricted the address sent in | |
816 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
817 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
818 | address was never sent. Since fixing this bug may cause a break in | |
819 | some remote targets this variable is principly provided to | |
23860348 | 820 | facilitate backward compatibility. */ |
c906108c SS |
821 | |
822 | static int remote_address_size; | |
823 | ||
75c99385 PA |
824 | /* Temporary to track who currently owns the terminal. See |
825 | remote_terminal_* for more details. */ | |
6426a772 JM |
826 | |
827 | static int remote_async_terminal_ours_p; | |
828 | ||
2d717e4f DJ |
829 | /* The executable file to use for "run" on the remote side. */ |
830 | ||
831 | static char *remote_exec_file = ""; | |
832 | ||
11cf8741 | 833 | \f |
11cf8741 | 834 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
835 | memory read/write packet. MIN (rsa->remote_packet_size, |
836 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 837 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
838 | (speed up transfers). The variables ``preferred_*'' (the user |
839 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 840 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
841 | |
842 | struct memory_packet_config | |
843 | { | |
844 | char *name; | |
845 | long size; | |
846 | int fixed_p; | |
847 | }; | |
848 | ||
849 | /* Compute the current size of a read/write packet. Since this makes | |
850 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
851 | ||
852 | static long | |
853 | get_memory_packet_size (struct memory_packet_config *config) | |
854 | { | |
d01949b6 | 855 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
856 | struct remote_arch_state *rsa = get_remote_arch_state (); |
857 | ||
11cf8741 JM |
858 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
859 | law?) that some hosts don't cope very well with large alloca() | |
860 | calls. Eventually the alloca() code will be replaced by calls to | |
861 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 862 | be lifted or removed. */ |
11cf8741 JM |
863 | #ifndef MAX_REMOTE_PACKET_SIZE |
864 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
865 | #endif | |
3de11b2e | 866 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 867 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 868 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
869 | #endif |
870 | long what_they_get; | |
871 | if (config->fixed_p) | |
872 | { | |
873 | if (config->size <= 0) | |
874 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
875 | else | |
876 | what_they_get = config->size; | |
877 | } | |
878 | else | |
879 | { | |
ea9c271d | 880 | what_they_get = get_remote_packet_size (); |
23860348 | 881 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
882 | if (config->size > 0 |
883 | && what_they_get > config->size) | |
884 | what_they_get = config->size; | |
be2a5f71 DJ |
885 | |
886 | /* Limit it to the size of the targets ``g'' response unless we have | |
887 | permission from the stub to use a larger packet size. */ | |
888 | if (rs->explicit_packet_size == 0 | |
889 | && rsa->actual_register_packet_size > 0 | |
890 | && what_they_get > rsa->actual_register_packet_size) | |
891 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
892 | } |
893 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
894 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
895 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
896 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
897 | |
898 | /* Make sure there is room in the global buffer for this packet | |
899 | (including its trailing NUL byte). */ | |
900 | if (rs->buf_size < what_they_get + 1) | |
901 | { | |
902 | rs->buf_size = 2 * what_they_get; | |
903 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
904 | } | |
905 | ||
11cf8741 JM |
906 | return what_they_get; |
907 | } | |
908 | ||
0df8b418 | 909 | /* Update the size of a read/write packet. If they user wants |
23860348 | 910 | something really big then do a sanity check. */ |
11cf8741 JM |
911 | |
912 | static void | |
913 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
914 | { | |
915 | int fixed_p = config->fixed_p; | |
916 | long size = config->size; | |
a744cf53 | 917 | |
11cf8741 | 918 | if (args == NULL) |
8a3fe4f8 | 919 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
920 | else if (strcmp (args, "hard") == 0 |
921 | || strcmp (args, "fixed") == 0) | |
922 | fixed_p = 1; | |
923 | else if (strcmp (args, "soft") == 0 | |
924 | || strcmp (args, "limit") == 0) | |
925 | fixed_p = 0; | |
926 | else | |
927 | { | |
928 | char *end; | |
a744cf53 | 929 | |
11cf8741 JM |
930 | size = strtoul (args, &end, 0); |
931 | if (args == end) | |
8a3fe4f8 | 932 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
933 | #if 0 |
934 | /* Instead of explicitly capping the size of a packet to | |
935 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
936 | instead allowed to set the size to something arbitrarily | |
23860348 | 937 | large. */ |
11cf8741 | 938 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 939 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
940 | #endif |
941 | } | |
23860348 | 942 | /* Extra checks? */ |
11cf8741 JM |
943 | if (fixed_p && !config->fixed_p) |
944 | { | |
e2e0b3e5 AC |
945 | if (! query (_("The target may not be able to correctly handle a %s\n" |
946 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 947 | config->name, size)) |
8a3fe4f8 | 948 | error (_("Packet size not changed.")); |
11cf8741 | 949 | } |
23860348 | 950 | /* Update the config. */ |
11cf8741 JM |
951 | config->fixed_p = fixed_p; |
952 | config->size = size; | |
953 | } | |
954 | ||
955 | static void | |
956 | show_memory_packet_size (struct memory_packet_config *config) | |
957 | { | |
a3f17187 | 958 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 959 | if (config->fixed_p) |
a3f17187 | 960 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
961 | get_memory_packet_size (config)); |
962 | else | |
a3f17187 | 963 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
964 | get_memory_packet_size (config)); |
965 | } | |
966 | ||
967 | static struct memory_packet_config memory_write_packet_config = | |
968 | { | |
969 | "memory-write-packet-size", | |
970 | }; | |
971 | ||
972 | static void | |
973 | set_memory_write_packet_size (char *args, int from_tty) | |
974 | { | |
975 | set_memory_packet_size (args, &memory_write_packet_config); | |
976 | } | |
977 | ||
978 | static void | |
979 | show_memory_write_packet_size (char *args, int from_tty) | |
980 | { | |
981 | show_memory_packet_size (&memory_write_packet_config); | |
982 | } | |
983 | ||
984 | static long | |
985 | get_memory_write_packet_size (void) | |
986 | { | |
987 | return get_memory_packet_size (&memory_write_packet_config); | |
988 | } | |
989 | ||
990 | static struct memory_packet_config memory_read_packet_config = | |
991 | { | |
992 | "memory-read-packet-size", | |
993 | }; | |
994 | ||
995 | static void | |
996 | set_memory_read_packet_size (char *args, int from_tty) | |
997 | { | |
998 | set_memory_packet_size (args, &memory_read_packet_config); | |
999 | } | |
1000 | ||
1001 | static void | |
1002 | show_memory_read_packet_size (char *args, int from_tty) | |
1003 | { | |
1004 | show_memory_packet_size (&memory_read_packet_config); | |
1005 | } | |
1006 | ||
1007 | static long | |
1008 | get_memory_read_packet_size (void) | |
1009 | { | |
1010 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1011 | |
11cf8741 JM |
1012 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1013 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1014 | increased beyond this. */ |
1015 | if (size > get_remote_packet_size ()) | |
1016 | size = get_remote_packet_size (); | |
11cf8741 JM |
1017 | return size; |
1018 | } | |
1019 | ||
11cf8741 | 1020 | \f |
5a2468f5 | 1021 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1022 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1023 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1024 | |
1025 | enum packet_support | |
1026 | { | |
1027 | PACKET_SUPPORT_UNKNOWN = 0, | |
1028 | PACKET_ENABLE, | |
1029 | PACKET_DISABLE | |
1030 | }; | |
1031 | ||
5a2468f5 JM |
1032 | struct packet_config |
1033 | { | |
bb572ddd DJ |
1034 | const char *name; |
1035 | const char *title; | |
7f19b9a2 | 1036 | enum auto_boolean detect; |
5a2468f5 JM |
1037 | enum packet_support support; |
1038 | }; | |
1039 | ||
d471ea57 | 1040 | /* Analyze a packet's return value and update the packet config |
23860348 | 1041 | accordingly. */ |
d471ea57 AC |
1042 | |
1043 | enum packet_result | |
1044 | { | |
1045 | PACKET_ERROR, | |
1046 | PACKET_OK, | |
1047 | PACKET_UNKNOWN | |
1048 | }; | |
1049 | ||
5a2468f5 | 1050 | static void |
d471ea57 | 1051 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1052 | { |
d471ea57 AC |
1053 | switch (config->detect) |
1054 | { | |
7f19b9a2 | 1055 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1056 | config->support = PACKET_ENABLE; |
1057 | break; | |
7f19b9a2 | 1058 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1059 | config->support = PACKET_DISABLE; |
1060 | break; | |
7f19b9a2 | 1061 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1062 | config->support = PACKET_SUPPORT_UNKNOWN; |
1063 | break; | |
1064 | } | |
5a2468f5 JM |
1065 | } |
1066 | ||
1067 | static void | |
fba45db2 | 1068 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1069 | { |
1070 | char *support = "internal-error"; | |
a744cf53 | 1071 | |
5a2468f5 JM |
1072 | switch (config->support) |
1073 | { | |
1074 | case PACKET_ENABLE: | |
1075 | support = "enabled"; | |
1076 | break; | |
1077 | case PACKET_DISABLE: | |
1078 | support = "disabled"; | |
1079 | break; | |
1080 | case PACKET_SUPPORT_UNKNOWN: | |
1081 | support = "unknown"; | |
1082 | break; | |
1083 | } | |
1084 | switch (config->detect) | |
1085 | { | |
7f19b9a2 | 1086 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1087 | printf_filtered (_("Support for the `%s' packet " |
1088 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1089 | config->name, support); |
5a2468f5 | 1090 | break; |
7f19b9a2 AC |
1091 | case AUTO_BOOLEAN_TRUE: |
1092 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1093 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1094 | config->name, support); | |
8e248173 | 1095 | break; |
5a2468f5 JM |
1096 | } |
1097 | } | |
1098 | ||
1099 | static void | |
bb572ddd DJ |
1100 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1101 | const char *title, int legacy) | |
d471ea57 | 1102 | { |
5a2468f5 JM |
1103 | char *set_doc; |
1104 | char *show_doc; | |
d471ea57 | 1105 | char *cmd_name; |
3ed07be4 | 1106 | |
5a2468f5 JM |
1107 | config->name = name; |
1108 | config->title = title; | |
7f19b9a2 | 1109 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1110 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1111 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1112 | name, title); | |
3e43a32a MS |
1113 | show_doc = xstrprintf ("Show current use of remote " |
1114 | "protocol `%s' (%s) packet", | |
b435e160 | 1115 | name, title); |
d471ea57 | 1116 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1117 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1118 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1119 | &config->detect, set_doc, |
1120 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1121 | set_remote_protocol_packet_cmd, |
1122 | show_remote_protocol_packet_cmd, | |
1123 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1124 | /* The command code copies the documentation strings. */ |
1125 | xfree (set_doc); | |
1126 | xfree (show_doc); | |
23860348 | 1127 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1128 | if (legacy) |
1129 | { | |
1130 | char *legacy_name; | |
a744cf53 | 1131 | |
b435e160 | 1132 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1133 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1134 | &remote_set_cmdlist); |
d471ea57 | 1135 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1136 | &remote_show_cmdlist); |
d471ea57 | 1137 | } |
5a2468f5 JM |
1138 | } |
1139 | ||
d471ea57 | 1140 | static enum packet_result |
a76d924d | 1141 | packet_check_result (const char *buf) |
5a2468f5 | 1142 | { |
d471ea57 | 1143 | if (buf[0] != '\0') |
5a2468f5 | 1144 | { |
d471ea57 | 1145 | /* The stub recognized the packet request. Check that the |
23860348 | 1146 | operation succeeded. */ |
a76d924d DJ |
1147 | if (buf[0] == 'E' |
1148 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1149 | && buf[3] == '\0') | |
1150 | /* "Enn" - definitly an error. */ | |
1151 | return PACKET_ERROR; | |
1152 | ||
1153 | /* Always treat "E." as an error. This will be used for | |
1154 | more verbose error messages, such as E.memtypes. */ | |
1155 | if (buf[0] == 'E' && buf[1] == '.') | |
1156 | return PACKET_ERROR; | |
1157 | ||
1158 | /* The packet may or may not be OK. Just assume it is. */ | |
1159 | return PACKET_OK; | |
1160 | } | |
1161 | else | |
1162 | /* The stub does not support the packet. */ | |
1163 | return PACKET_UNKNOWN; | |
1164 | } | |
1165 | ||
1166 | static enum packet_result | |
1167 | packet_ok (const char *buf, struct packet_config *config) | |
1168 | { | |
1169 | enum packet_result result; | |
1170 | ||
1171 | result = packet_check_result (buf); | |
1172 | switch (result) | |
1173 | { | |
1174 | case PACKET_OK: | |
1175 | case PACKET_ERROR: | |
1176 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1177 | switch (config->support) |
1178 | { | |
1179 | case PACKET_SUPPORT_UNKNOWN: | |
1180 | if (remote_debug) | |
1181 | fprintf_unfiltered (gdb_stdlog, | |
1182 | "Packet %s (%s) is supported\n", | |
1183 | config->name, config->title); | |
1184 | config->support = PACKET_ENABLE; | |
1185 | break; | |
1186 | case PACKET_DISABLE: | |
8e65ff28 | 1187 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1188 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1189 | break; |
1190 | case PACKET_ENABLE: | |
1191 | break; | |
1192 | } | |
a76d924d DJ |
1193 | break; |
1194 | case PACKET_UNKNOWN: | |
23860348 | 1195 | /* The stub does not support the packet. */ |
d471ea57 AC |
1196 | switch (config->support) |
1197 | { | |
1198 | case PACKET_ENABLE: | |
7f19b9a2 | 1199 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1200 | /* If the stub previously indicated that the packet was |
23860348 | 1201 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1202 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1203 | config->name, config->title); |
1204 | else | |
23860348 | 1205 | /* The user set it wrong. */ |
8a3fe4f8 | 1206 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1207 | config->name, config->title); |
1208 | break; | |
1209 | case PACKET_SUPPORT_UNKNOWN: | |
1210 | if (remote_debug) | |
1211 | fprintf_unfiltered (gdb_stdlog, | |
1212 | "Packet %s (%s) is NOT supported\n", | |
1213 | config->name, config->title); | |
1214 | config->support = PACKET_DISABLE; | |
1215 | break; | |
1216 | case PACKET_DISABLE: | |
1217 | break; | |
1218 | } | |
a76d924d | 1219 | break; |
5a2468f5 | 1220 | } |
a76d924d DJ |
1221 | |
1222 | return result; | |
5a2468f5 JM |
1223 | } |
1224 | ||
444abaca DJ |
1225 | enum { |
1226 | PACKET_vCont = 0, | |
1227 | PACKET_X, | |
1228 | PACKET_qSymbol, | |
1229 | PACKET_P, | |
1230 | PACKET_p, | |
1231 | PACKET_Z0, | |
1232 | PACKET_Z1, | |
1233 | PACKET_Z2, | |
1234 | PACKET_Z3, | |
1235 | PACKET_Z4, | |
a6b151f1 DJ |
1236 | PACKET_vFile_open, |
1237 | PACKET_vFile_pread, | |
1238 | PACKET_vFile_pwrite, | |
1239 | PACKET_vFile_close, | |
1240 | PACKET_vFile_unlink, | |
0876f84a | 1241 | PACKET_qXfer_auxv, |
23181151 | 1242 | PACKET_qXfer_features, |
cfa9d6d9 | 1243 | PACKET_qXfer_libraries, |
2268b414 | 1244 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1245 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1246 | PACKET_qXfer_spu_read, |
1247 | PACKET_qXfer_spu_write, | |
07e059b5 | 1248 | PACKET_qXfer_osdata, |
dc146f7c | 1249 | PACKET_qXfer_threads, |
0fb4aa4b | 1250 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1251 | PACKET_qXfer_traceframe_info, |
711e434b | 1252 | PACKET_qGetTIBAddr, |
444abaca | 1253 | PACKET_qGetTLSAddr, |
be2a5f71 | 1254 | PACKET_qSupported, |
89be2091 | 1255 | PACKET_QPassSignals, |
08388c79 | 1256 | PACKET_qSearch_memory, |
2d717e4f DJ |
1257 | PACKET_vAttach, |
1258 | PACKET_vRun, | |
a6f3e723 | 1259 | PACKET_QStartNoAckMode, |
82f73884 | 1260 | PACKET_vKill, |
4aa995e1 PA |
1261 | PACKET_qXfer_siginfo_read, |
1262 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1263 | PACKET_qAttached, |
782b2b07 | 1264 | PACKET_ConditionalTracepoints, |
7a697b8d | 1265 | PACKET_FastTracepoints, |
0fb4aa4b | 1266 | PACKET_StaticTracepoints, |
1e4d1764 | 1267 | PACKET_InstallInTrace, |
40ab02ce MS |
1268 | PACKET_bc, |
1269 | PACKET_bs, | |
409873ef | 1270 | PACKET_TracepointSource, |
d914c394 | 1271 | PACKET_QAllow, |
78d85199 | 1272 | PACKET_qXfer_fdpic, |
03583c20 | 1273 | PACKET_QDisableRandomization, |
444abaca DJ |
1274 | PACKET_MAX |
1275 | }; | |
506fb367 | 1276 | |
444abaca | 1277 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1278 | |
1279 | static void | |
444abaca DJ |
1280 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1281 | struct cmd_list_element *c) | |
dc8acb97 | 1282 | { |
444abaca | 1283 | struct packet_config *packet; |
dc8acb97 | 1284 | |
444abaca DJ |
1285 | for (packet = remote_protocol_packets; |
1286 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1287 | packet++) | |
1288 | { | |
1289 | if (&packet->detect == c->var) | |
1290 | { | |
1291 | update_packet_config (packet); | |
1292 | return; | |
1293 | } | |
1294 | } | |
9b20d036 | 1295 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1296 | c->name); |
dc8acb97 MS |
1297 | } |
1298 | ||
5a2468f5 | 1299 | static void |
444abaca DJ |
1300 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1301 | struct cmd_list_element *c, | |
1302 | const char *value) | |
5a2468f5 | 1303 | { |
444abaca | 1304 | struct packet_config *packet; |
5a2468f5 | 1305 | |
444abaca DJ |
1306 | for (packet = remote_protocol_packets; |
1307 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1308 | packet++) | |
1309 | { | |
1310 | if (&packet->detect == c->var) | |
1311 | { | |
1312 | show_packet_config_cmd (packet); | |
1313 | return; | |
1314 | } | |
1315 | } | |
9b20d036 | 1316 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1317 | c->name); |
5a2468f5 JM |
1318 | } |
1319 | ||
d471ea57 AC |
1320 | /* Should we try one of the 'Z' requests? */ |
1321 | ||
1322 | enum Z_packet_type | |
1323 | { | |
1324 | Z_PACKET_SOFTWARE_BP, | |
1325 | Z_PACKET_HARDWARE_BP, | |
1326 | Z_PACKET_WRITE_WP, | |
1327 | Z_PACKET_READ_WP, | |
1328 | Z_PACKET_ACCESS_WP, | |
1329 | NR_Z_PACKET_TYPES | |
1330 | }; | |
96baa820 | 1331 | |
d471ea57 | 1332 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1333 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1334 | |
7f19b9a2 | 1335 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1336 | |
1337 | static void | |
fba45db2 KB |
1338 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1339 | struct cmd_list_element *c) | |
96baa820 | 1340 | { |
d471ea57 | 1341 | int i; |
a744cf53 | 1342 | |
d471ea57 AC |
1343 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1344 | { | |
444abaca DJ |
1345 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1346 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1347 | } |
96baa820 JM |
1348 | } |
1349 | ||
1350 | static void | |
08546159 AC |
1351 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1352 | struct cmd_list_element *c, | |
1353 | const char *value) | |
96baa820 | 1354 | { |
d471ea57 | 1355 | int i; |
a744cf53 | 1356 | |
d471ea57 AC |
1357 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1358 | { | |
444abaca | 1359 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1360 | } |
96baa820 JM |
1361 | } |
1362 | ||
9d1f7ab2 MS |
1363 | /* Should we try the 'ThreadInfo' query packet? |
1364 | ||
1365 | This variable (NOT available to the user: auto-detect only!) | |
1366 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1367 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1368 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1369 | and set to false when the target fails to recognize it). */ |
1370 | ||
1371 | static int use_threadinfo_query; | |
1372 | static int use_threadextra_query; | |
1373 | ||
23860348 | 1374 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1375 | static struct async_signal_handler *sigint_remote_twice_token; |
1376 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1377 | |
74531fed PA |
1378 | \f |
1379 | /* Asynchronous signal handle registered as event loop source for | |
1380 | when we have pending events ready to be passed to the core. */ | |
1381 | ||
1382 | static struct async_event_handler *remote_async_inferior_event_token; | |
1383 | ||
1384 | /* Asynchronous signal handle registered as event loop source for when | |
1385 | the remote sent us a %Stop notification. The registered callback | |
1386 | will do a vStopped sequence to pull the rest of the events out of | |
1387 | the remote side into our event queue. */ | |
1388 | ||
1389 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1390 | \f |
1391 | ||
79d7f229 PA |
1392 | static ptid_t magic_null_ptid; |
1393 | static ptid_t not_sent_ptid; | |
1394 | static ptid_t any_thread_ptid; | |
1395 | ||
1396 | /* These are the threads which we last sent to the remote system. The | |
1397 | TID member will be -1 for all or -2 for not sent yet. */ | |
1398 | ||
1399 | static ptid_t general_thread; | |
1400 | static ptid_t continue_thread; | |
c5aa993b | 1401 | |
e6e4e701 PA |
1402 | /* This the traceframe which we last selected on the remote system. |
1403 | It will be -1 if no traceframe is selected. */ | |
1404 | static int remote_traceframe_number = -1; | |
1405 | ||
0b16c5cf PA |
1406 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1407 | detach instead of killing it when bailing out). */ | |
1408 | ||
1409 | static int | |
1410 | remote_query_attached (int pid) | |
1411 | { | |
1412 | struct remote_state *rs = get_remote_state (); | |
1413 | ||
1414 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1415 | return 0; | |
1416 | ||
1417 | if (remote_multi_process_p (rs)) | |
1418 | sprintf (rs->buf, "qAttached:%x", pid); | |
1419 | else | |
1420 | sprintf (rs->buf, "qAttached"); | |
1421 | ||
1422 | putpkt (rs->buf); | |
1423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1424 | ||
1425 | switch (packet_ok (rs->buf, | |
1554e9be | 1426 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1427 | { |
1428 | case PACKET_OK: | |
1429 | if (strcmp (rs->buf, "1") == 0) | |
1430 | return 1; | |
1431 | break; | |
1432 | case PACKET_ERROR: | |
1433 | warning (_("Remote failure reply: %s"), rs->buf); | |
1434 | break; | |
1435 | case PACKET_UNKNOWN: | |
1436 | break; | |
1437 | } | |
1438 | ||
1439 | return 0; | |
1440 | } | |
1441 | ||
1941c569 PA |
1442 | /* Add PID to GDB's inferior table. Since we can be connected to a |
1443 | remote system before before knowing about any inferior, mark the | |
0b16c5cf PA |
1444 | target with execution when we find the first inferior. If ATTACHED |
1445 | is 1, then we had just attached to this inferior. If it is 0, then | |
1446 | we just created this inferior. If it is -1, then try querying the | |
1447 | remote stub to find out if it had attached to the inferior or | |
1448 | not. */ | |
1941c569 PA |
1449 | |
1450 | static struct inferior * | |
0b16c5cf | 1451 | remote_add_inferior (int pid, int attached) |
1941c569 | 1452 | { |
1941c569 PA |
1453 | struct inferior *inf; |
1454 | ||
0b16c5cf PA |
1455 | /* Check whether this process we're learning about is to be |
1456 | considered attached, or if is to be considered to have been | |
1457 | spawned by the stub. */ | |
1458 | if (attached == -1) | |
1459 | attached = remote_query_attached (pid); | |
1460 | ||
6c95b8df PA |
1461 | if (gdbarch_has_global_solist (target_gdbarch)) |
1462 | { | |
1463 | /* If the target shares code across all inferiors, then every | |
1464 | attach adds a new inferior. */ | |
1465 | inf = add_inferior (pid); | |
1466 | ||
1467 | /* ... and every inferior is bound to the same program space. | |
1468 | However, each inferior may still have its own address | |
1469 | space. */ | |
1470 | inf->aspace = maybe_new_address_space (); | |
1471 | inf->pspace = current_program_space; | |
1472 | } | |
1473 | else | |
1474 | { | |
1475 | /* In the traditional debugging scenario, there's a 1-1 match | |
1476 | between program/address spaces. We simply bind the inferior | |
1477 | to the program space's address space. */ | |
1478 | inf = current_inferior (); | |
1479 | inferior_appeared (inf, pid); | |
1480 | } | |
1941c569 | 1481 | |
0b16c5cf PA |
1482 | inf->attach_flag = attached; |
1483 | ||
1941c569 PA |
1484 | return inf; |
1485 | } | |
1486 | ||
1487 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1488 | according to RUNNING. */ | |
1489 | ||
c906108c | 1490 | static void |
1941c569 | 1491 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1492 | { |
1941c569 PA |
1493 | add_thread (ptid); |
1494 | ||
1495 | set_executing (ptid, running); | |
1496 | set_running (ptid, running); | |
1497 | } | |
1498 | ||
1499 | /* Come here when we learn about a thread id from the remote target. | |
1500 | It may be the first time we hear about such thread, so take the | |
1501 | opportunity to add it to GDB's thread list. In case this is the | |
1502 | first time we're noticing its corresponding inferior, add it to | |
1503 | GDB's inferior list as well. */ | |
1504 | ||
1505 | static void | |
1506 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1507 | { | |
c906108c SS |
1508 | /* If this is a new thread, add it to GDB's thread list. |
1509 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1510 | |
1511 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1512 | { | |
1513 | /* We're seeing an event on a thread id we knew had exited. | |
1514 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1515 | remote_add_thread (currthread, running); |
82f73884 PA |
1516 | return; |
1517 | } | |
1518 | ||
79d7f229 | 1519 | if (!in_thread_list (currthread)) |
c0a2216e | 1520 | { |
1941c569 | 1521 | struct inferior *inf = NULL; |
bad34192 | 1522 | int pid = ptid_get_pid (currthread); |
1941c569 | 1523 | |
bad34192 PA |
1524 | if (ptid_is_pid (inferior_ptid) |
1525 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1526 | { |
1527 | /* inferior_ptid has no thread member yet. This can happen | |
1528 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1529 | stub doesn't support qC. This is the first stop reported | |
1530 | after an attach, so this is the main thread. Update the | |
1531 | ptid in the thread list. */ | |
bad34192 PA |
1532 | if (in_thread_list (pid_to_ptid (pid))) |
1533 | thread_change_ptid (inferior_ptid, currthread); | |
1534 | else | |
1535 | { | |
1536 | remote_add_thread (currthread, running); | |
1537 | inferior_ptid = currthread; | |
1538 | } | |
dc146f7c | 1539 | return; |
c0a2216e | 1540 | } |
82f73884 PA |
1541 | |
1542 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1543 | { |
1544 | /* inferior_ptid is not set yet. This can happen with the | |
1545 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1546 | doesn't support qC. This is the first stop reported | |
1547 | after an attach, so this is the main thread. Update the | |
1548 | ptid in the thread list. */ | |
dc146f7c | 1549 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1550 | return; |
c0a2216e | 1551 | } |
82f73884 | 1552 | |
29c87f7f PA |
1553 | /* When connecting to a target remote, or to a target |
1554 | extended-remote which already was debugging an inferior, we | |
1555 | may not know about it yet. Add it before adding its child | |
1556 | thread, so notifications are emitted in a sensible order. */ | |
1557 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
0b16c5cf | 1558 | inf = remote_add_inferior (ptid_get_pid (currthread), -1); |
29c87f7f | 1559 | |
82f73884 | 1560 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1561 | remote_add_thread (currthread, running); |
1562 | ||
1563 | /* If we found a new inferior, let the common code do whatever | |
1564 | it needs to with it (e.g., read shared libraries, insert | |
1565 | breakpoints). */ | |
1566 | if (inf != NULL) | |
1567 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1568 | } |
c906108c SS |
1569 | } |
1570 | ||
dc146f7c VP |
1571 | /* Return the private thread data, creating it if necessary. */ |
1572 | ||
1573 | struct private_thread_info * | |
1574 | demand_private_info (ptid_t ptid) | |
1575 | { | |
1576 | struct thread_info *info = find_thread_ptid (ptid); | |
1577 | ||
1578 | gdb_assert (info); | |
1579 | ||
1580 | if (!info->private) | |
1581 | { | |
1582 | info->private = xmalloc (sizeof (*(info->private))); | |
1583 | info->private_dtor = free_private_thread_info; | |
1584 | info->private->core = -1; | |
1585 | info->private->extra = 0; | |
1586 | } | |
1587 | ||
1588 | return info->private; | |
1589 | } | |
1590 | ||
74531fed PA |
1591 | /* Call this function as a result of |
1592 | 1) A halt indication (T packet) containing a thread id | |
1593 | 2) A direct query of currthread | |
0df8b418 | 1594 | 3) Successful execution of set thread */ |
74531fed PA |
1595 | |
1596 | static void | |
1597 | record_currthread (ptid_t currthread) | |
1598 | { | |
1599 | general_thread = currthread; | |
74531fed PA |
1600 | } |
1601 | ||
89be2091 DJ |
1602 | static char *last_pass_packet; |
1603 | ||
1604 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1605 | it can simply pass through to the inferior without reporting. */ | |
1606 | ||
1607 | static void | |
2455069d | 1608 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1609 | { |
1610 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1611 | { | |
1612 | char *pass_packet, *p; | |
89be2091 DJ |
1613 | int count = 0, i; |
1614 | ||
1615 | gdb_assert (numsigs < 256); | |
1616 | for (i = 0; i < numsigs; i++) | |
1617 | { | |
2455069d | 1618 | if (pass_signals[i]) |
89be2091 DJ |
1619 | count++; |
1620 | } | |
1621 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1622 | strcpy (pass_packet, "QPassSignals:"); | |
1623 | p = pass_packet + strlen (pass_packet); | |
1624 | for (i = 0; i < numsigs; i++) | |
1625 | { | |
2455069d | 1626 | if (pass_signals[i]) |
89be2091 DJ |
1627 | { |
1628 | if (i >= 16) | |
1629 | *p++ = tohex (i >> 4); | |
1630 | *p++ = tohex (i & 15); | |
1631 | if (count) | |
1632 | *p++ = ';'; | |
1633 | else | |
1634 | break; | |
1635 | count--; | |
1636 | } | |
1637 | } | |
1638 | *p = 0; | |
1639 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1640 | { | |
1641 | struct remote_state *rs = get_remote_state (); | |
1642 | char *buf = rs->buf; | |
1643 | ||
1644 | putpkt (pass_packet); | |
1645 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1646 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1647 | if (last_pass_packet) | |
1648 | xfree (last_pass_packet); | |
1649 | last_pass_packet = pass_packet; | |
1650 | } | |
1651 | else | |
1652 | xfree (pass_packet); | |
1653 | } | |
1654 | } | |
1655 | ||
79d7f229 PA |
1656 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1657 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1658 | thread. If GEN is set, set the general thread, if not, then set | |
1659 | the step/continue thread. */ | |
c906108c | 1660 | static void |
79d7f229 | 1661 | set_thread (struct ptid ptid, int gen) |
c906108c | 1662 | { |
d01949b6 | 1663 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1664 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1665 | char *buf = rs->buf; |
79d7f229 | 1666 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1667 | |
79d7f229 | 1668 | if (ptid_equal (state, ptid)) |
c906108c SS |
1669 | return; |
1670 | ||
79d7f229 PA |
1671 | *buf++ = 'H'; |
1672 | *buf++ = gen ? 'g' : 'c'; | |
1673 | if (ptid_equal (ptid, magic_null_ptid)) | |
1674 | xsnprintf (buf, endbuf - buf, "0"); | |
1675 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1676 | xsnprintf (buf, endbuf - buf, "0"); | |
1677 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1678 | xsnprintf (buf, endbuf - buf, "-1"); | |
1679 | else | |
82f73884 | 1680 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1681 | putpkt (rs->buf); |
6d820c5c | 1682 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1683 | if (gen) |
79d7f229 | 1684 | general_thread = ptid; |
c906108c | 1685 | else |
79d7f229 | 1686 | continue_thread = ptid; |
c906108c | 1687 | } |
79d7f229 PA |
1688 | |
1689 | static void | |
1690 | set_general_thread (struct ptid ptid) | |
1691 | { | |
1692 | set_thread (ptid, 1); | |
1693 | } | |
1694 | ||
1695 | static void | |
1696 | set_continue_thread (struct ptid ptid) | |
1697 | { | |
1698 | set_thread (ptid, 0); | |
1699 | } | |
1700 | ||
3c9c4b83 PA |
1701 | /* Change the remote current process. Which thread within the process |
1702 | ends up selected isn't important, as long as it is the same process | |
1703 | as what INFERIOR_PTID points to. | |
1704 | ||
1705 | This comes from that fact that there is no explicit notion of | |
1706 | "selected process" in the protocol. The selected process for | |
1707 | general operations is the process the selected general thread | |
1708 | belongs to. */ | |
1709 | ||
1710 | static void | |
1711 | set_general_process (void) | |
1712 | { | |
1713 | struct remote_state *rs = get_remote_state (); | |
1714 | ||
1715 | /* If the remote can't handle multiple processes, don't bother. */ | |
1716 | if (!remote_multi_process_p (rs)) | |
1717 | return; | |
1718 | ||
1719 | /* We only need to change the remote current thread if it's pointing | |
1720 | at some other process. */ | |
1721 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1722 | set_general_thread (inferior_ptid); | |
1723 | } | |
1724 | ||
c906108c | 1725 | \f |
79d7f229 PA |
1726 | /* Return nonzero if the thread PTID is still alive on the remote |
1727 | system. */ | |
c906108c SS |
1728 | |
1729 | static int | |
28439f5e | 1730 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1731 | { |
6d820c5c | 1732 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1733 | char *p, *endp; |
c906108c | 1734 | |
c0a2216e PA |
1735 | if (ptid_equal (ptid, magic_null_ptid)) |
1736 | /* The main thread is always alive. */ | |
1737 | return 1; | |
1738 | ||
1739 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1740 | /* The main thread is always alive. This can happen after a | |
1741 | vAttach, if the remote side doesn't support | |
1742 | multi-threading. */ | |
1743 | return 1; | |
1744 | ||
82f73884 PA |
1745 | p = rs->buf; |
1746 | endp = rs->buf + get_remote_packet_size (); | |
1747 | ||
1748 | *p++ = 'T'; | |
1749 | write_ptid (p, endp, ptid); | |
1750 | ||
2e9f7625 | 1751 | putpkt (rs->buf); |
6d820c5c | 1752 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1753 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1754 | } |
1755 | ||
1756 | /* About these extended threadlist and threadinfo packets. They are | |
1757 | variable length packets but, the fields within them are often fixed | |
1758 | length. They are redundent enough to send over UDP as is the | |
1759 | remote protocol in general. There is a matching unit test module | |
1760 | in libstub. */ | |
1761 | ||
cce74817 JM |
1762 | #define OPAQUETHREADBYTES 8 |
1763 | ||
1764 | /* a 64 bit opaque identifier */ | |
1765 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1766 | ||
23860348 | 1767 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1768 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1769 | changable. */ |
cce74817 JM |
1770 | |
1771 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1772 | Plan to fix this. */ |
cce74817 | 1773 | |
23860348 | 1774 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1775 | |
9d1f7ab2 | 1776 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1777 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1778 | |
1779 | struct gdb_ext_thread_info | |
c5aa993b | 1780 | { |
23860348 | 1781 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1782 | int active; /* Has state interesting to GDB? |
23860348 | 1783 | regs, stack. */ |
2bc416ba | 1784 | char display[256]; /* Brief state display, name, |
cedea757 | 1785 | blocked/suspended. */ |
23860348 | 1786 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1787 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1788 | whatever. */ |
c5aa993b | 1789 | }; |
cce74817 JM |
1790 | |
1791 | /* The volume of remote transfers can be limited by submitting | |
1792 | a mask containing bits specifying the desired information. | |
1793 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1794 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1795 | |
1796 | #define TAG_THREADID 1 | |
1797 | #define TAG_EXISTS 2 | |
1798 | #define TAG_DISPLAY 4 | |
1799 | #define TAG_THREADNAME 8 | |
c5aa993b | 1800 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1801 | |
23860348 | 1802 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1803 | |
b2dd6311 | 1804 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1805 | |
a14ed312 | 1806 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1807 | |
a14ed312 | 1808 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1809 | |
23860348 | 1810 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1811 | |
a14ed312 | 1812 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1813 | |
a14ed312 | 1814 | static char *pack_int (char *buf, int value); |
cce74817 | 1815 | |
a14ed312 | 1816 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1817 | |
a14ed312 | 1818 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1819 | |
23860348 | 1820 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1821 | |
23860348 | 1822 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1823 | |
23860348 | 1824 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1825 | |
23860348 | 1826 | static int threadref_to_int (threadref *ref); |
cce74817 | 1827 | |
23860348 | 1828 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1829 | |
23860348 | 1830 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1831 | |
2bc416ba | 1832 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1833 | threadref *id); |
cce74817 | 1834 | |
a14ed312 | 1835 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1836 | threadref *expectedref, |
a14ed312 KB |
1837 | struct gdb_ext_thread_info |
1838 | *info); | |
cce74817 JM |
1839 | |
1840 | ||
2bc416ba | 1841 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1842 | int fieldset, /*TAG mask */ |
a14ed312 | 1843 | struct gdb_ext_thread_info *info); |
cce74817 | 1844 | |
a14ed312 KB |
1845 | static char *pack_threadlist_request (char *pkt, int startflag, |
1846 | int threadcount, | |
23860348 | 1847 | threadref *nextthread); |
cce74817 | 1848 | |
a14ed312 KB |
1849 | static int parse_threadlist_response (char *pkt, |
1850 | int result_limit, | |
23860348 | 1851 | threadref *original_echo, |
2bc416ba | 1852 | threadref *resultlist, |
23860348 | 1853 | int *doneflag); |
cce74817 | 1854 | |
a14ed312 | 1855 | static int remote_get_threadlist (int startflag, |
23860348 | 1856 | threadref *nextthread, |
a14ed312 KB |
1857 | int result_limit, |
1858 | int *done, | |
2bc416ba | 1859 | int *result_count, |
23860348 | 1860 | threadref *threadlist); |
cce74817 | 1861 | |
23860348 | 1862 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1863 | |
a14ed312 KB |
1864 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1865 | void *context, int looplimit); | |
cce74817 | 1866 | |
23860348 | 1867 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1868 | |
82f73884 PA |
1869 | |
1870 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1871 | buffer we're allowed to write to. Returns | |
1872 | BUF+CHARACTERS_WRITTEN. */ | |
1873 | ||
1874 | static char * | |
1875 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1876 | { | |
1877 | int pid, tid; | |
1878 | struct remote_state *rs = get_remote_state (); | |
1879 | ||
1880 | if (remote_multi_process_p (rs)) | |
1881 | { | |
1882 | pid = ptid_get_pid (ptid); | |
1883 | if (pid < 0) | |
1884 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1885 | else | |
1886 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1887 | } | |
1888 | tid = ptid_get_tid (ptid); | |
1889 | if (tid < 0) | |
1890 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1891 | else | |
1892 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1893 | ||
1894 | return buf; | |
1895 | } | |
1896 | ||
1897 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1898 | passed the last parsed char. Returns null_ptid on error. */ | |
1899 | ||
1900 | static ptid_t | |
1901 | read_ptid (char *buf, char **obuf) | |
1902 | { | |
1903 | char *p = buf; | |
1904 | char *pp; | |
1905 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1906 | |
1907 | if (*p == 'p') | |
1908 | { | |
1909 | /* Multi-process ptid. */ | |
1910 | pp = unpack_varlen_hex (p + 1, &pid); | |
1911 | if (*pp != '.') | |
b37520b6 | 1912 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1913 | |
1914 | p = pp; | |
1915 | pp = unpack_varlen_hex (p + 1, &tid); | |
1916 | if (obuf) | |
1917 | *obuf = pp; | |
1918 | return ptid_build (pid, 0, tid); | |
1919 | } | |
1920 | ||
1921 | /* No multi-process. Just a tid. */ | |
1922 | pp = unpack_varlen_hex (p, &tid); | |
1923 | ||
1924 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1925 | what's in inferior_ptid, unless it's null at this point. If so, |
1926 | then since there's no way to know the pid of the reported | |
1927 | threads, use the magic number. */ | |
1928 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1929 | pid = ptid_get_pid (magic_null_ptid); | |
1930 | else | |
1931 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1932 | |
1933 | if (obuf) | |
1934 | *obuf = pp; | |
1935 | return ptid_build (pid, 0, tid); | |
1936 | } | |
1937 | ||
23860348 | 1938 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1939 | |
1940 | static const char hexchars[] = "0123456789abcdef"; | |
1941 | ||
1942 | static int | |
fba45db2 | 1943 | ishex (int ch, int *val) |
c906108c SS |
1944 | { |
1945 | if ((ch >= 'a') && (ch <= 'f')) | |
1946 | { | |
1947 | *val = ch - 'a' + 10; | |
1948 | return 1; | |
1949 | } | |
1950 | if ((ch >= 'A') && (ch <= 'F')) | |
1951 | { | |
1952 | *val = ch - 'A' + 10; | |
1953 | return 1; | |
1954 | } | |
1955 | if ((ch >= '0') && (ch <= '9')) | |
1956 | { | |
1957 | *val = ch - '0'; | |
1958 | return 1; | |
1959 | } | |
1960 | return 0; | |
1961 | } | |
1962 | ||
1963 | static int | |
fba45db2 | 1964 | stubhex (int ch) |
c906108c SS |
1965 | { |
1966 | if (ch >= 'a' && ch <= 'f') | |
1967 | return ch - 'a' + 10; | |
1968 | if (ch >= '0' && ch <= '9') | |
1969 | return ch - '0'; | |
1970 | if (ch >= 'A' && ch <= 'F') | |
1971 | return ch - 'A' + 10; | |
1972 | return -1; | |
1973 | } | |
1974 | ||
1975 | static int | |
fba45db2 | 1976 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1977 | { |
1978 | int nibble; | |
1979 | int retval = 0; | |
1980 | ||
1981 | while (fieldlength) | |
1982 | { | |
1983 | nibble = stubhex (*buff++); | |
1984 | retval |= nibble; | |
1985 | fieldlength--; | |
1986 | if (fieldlength) | |
1987 | retval = retval << 4; | |
1988 | } | |
1989 | return retval; | |
1990 | } | |
1991 | ||
1992 | char * | |
fba45db2 | 1993 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1994 | ULONGEST *result) |
c906108c SS |
1995 | { |
1996 | int nibble; | |
d49c44d5 | 1997 | ULONGEST retval = 0; |
c906108c SS |
1998 | |
1999 | while (ishex (*buff, &nibble)) | |
2000 | { | |
2001 | buff++; | |
2002 | retval = retval << 4; | |
2003 | retval |= nibble & 0x0f; | |
2004 | } | |
2005 | *result = retval; | |
2006 | return buff; | |
2007 | } | |
2008 | ||
2009 | static char * | |
fba45db2 | 2010 | unpack_nibble (char *buf, int *val) |
c906108c | 2011 | { |
b7589f7d | 2012 | *val = fromhex (*buf++); |
c906108c SS |
2013 | return buf; |
2014 | } | |
2015 | ||
2016 | static char * | |
fba45db2 | 2017 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2018 | { |
2019 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2020 | return buf; | |
2021 | } | |
2022 | ||
2023 | static char * | |
fba45db2 | 2024 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2025 | { |
2026 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2027 | *pkt++ = hexchars[(byte & 0xf)]; | |
2028 | return pkt; | |
2029 | } | |
2030 | ||
2031 | static char * | |
fba45db2 | 2032 | unpack_byte (char *buf, int *value) |
c906108c SS |
2033 | { |
2034 | *value = stub_unpack_int (buf, 2); | |
2035 | return buf + 2; | |
2036 | } | |
2037 | ||
2038 | static char * | |
fba45db2 | 2039 | pack_int (char *buf, int value) |
c906108c SS |
2040 | { |
2041 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2042 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2043 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2044 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2045 | return buf; | |
2046 | } | |
2047 | ||
2048 | static char * | |
fba45db2 | 2049 | unpack_int (char *buf, int *value) |
c906108c SS |
2050 | { |
2051 | *value = stub_unpack_int (buf, 8); | |
2052 | return buf + 8; | |
2053 | } | |
2054 | ||
23860348 | 2055 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2056 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2057 | |
2058 | static char * | |
fba45db2 | 2059 | pack_string (char *pkt, char *string) |
c906108c SS |
2060 | { |
2061 | char ch; | |
2062 | int len; | |
2063 | ||
2064 | len = strlen (string); | |
2065 | if (len > 200) | |
23860348 | 2066 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2067 | pkt = pack_hex_byte (pkt, len); |
2068 | while (len-- > 0) | |
2069 | { | |
2070 | ch = *string++; | |
2071 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2072 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2073 | *pkt++ = ch; |
2074 | } | |
2075 | return pkt; | |
2076 | } | |
2077 | #endif /* 0 (unused) */ | |
2078 | ||
2079 | static char * | |
fba45db2 | 2080 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2081 | { |
2082 | while (length--) | |
2083 | *dest++ = *src++; | |
2084 | *dest = '\0'; | |
2085 | return src; | |
2086 | } | |
2087 | ||
2088 | static char * | |
fba45db2 | 2089 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2090 | { |
2091 | char *limit; | |
2092 | unsigned char *altid; | |
2093 | ||
2094 | altid = (unsigned char *) id; | |
2095 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2096 | while (pkt < limit) | |
2097 | pkt = pack_hex_byte (pkt, *altid++); | |
2098 | return pkt; | |
2099 | } | |
2100 | ||
2101 | ||
2102 | static char * | |
fba45db2 | 2103 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2104 | { |
2105 | char *altref; | |
2106 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2107 | int x, y; | |
2108 | ||
2109 | altref = (char *) id; | |
2110 | ||
2111 | while (inbuf < limit) | |
2112 | { | |
2113 | x = stubhex (*inbuf++); | |
2114 | y = stubhex (*inbuf++); | |
2115 | *altref++ = (x << 4) | y; | |
2116 | } | |
2117 | return inbuf; | |
2118 | } | |
2119 | ||
2120 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2121 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2122 | to use 64bit thread references internally. This is an adapter |
2123 | function. */ | |
2124 | ||
2125 | void | |
fba45db2 | 2126 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2127 | { |
2128 | unsigned char *scan; | |
2129 | ||
2130 | scan = (unsigned char *) id; | |
2131 | { | |
2132 | int i = 4; | |
2133 | while (i--) | |
2134 | *scan++ = 0; | |
2135 | } | |
2136 | *scan++ = (value >> 24) & 0xff; | |
2137 | *scan++ = (value >> 16) & 0xff; | |
2138 | *scan++ = (value >> 8) & 0xff; | |
2139 | *scan++ = (value & 0xff); | |
2140 | } | |
2141 | ||
2142 | static int | |
fba45db2 | 2143 | threadref_to_int (threadref *ref) |
c906108c SS |
2144 | { |
2145 | int i, value = 0; | |
2146 | unsigned char *scan; | |
2147 | ||
cfd77fa1 | 2148 | scan = *ref; |
c906108c SS |
2149 | scan += 4; |
2150 | i = 4; | |
2151 | while (i-- > 0) | |
2152 | value = (value << 8) | ((*scan++) & 0xff); | |
2153 | return value; | |
2154 | } | |
2155 | ||
2156 | static void | |
fba45db2 | 2157 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2158 | { |
2159 | int i; | |
2160 | unsigned char *csrc, *cdest; | |
2161 | ||
2162 | csrc = (unsigned char *) src; | |
2163 | cdest = (unsigned char *) dest; | |
2164 | i = 8; | |
2165 | while (i--) | |
2166 | *cdest++ = *csrc++; | |
2167 | } | |
2168 | ||
2169 | static int | |
fba45db2 | 2170 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2171 | { |
23860348 | 2172 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2173 | #if 0 |
2174 | unsigned char *srcp, *destp; | |
2175 | int i, result; | |
2176 | srcp = (char *) src; | |
2177 | destp = (char *) dest; | |
2178 | ||
2179 | result = 1; | |
2180 | while (i-- > 0) | |
2181 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2182 | return result; | |
2183 | #endif | |
2184 | return 1; | |
2185 | } | |
2186 | ||
2187 | /* | |
c5aa993b JM |
2188 | threadid:1, # always request threadid |
2189 | context_exists:2, | |
2190 | display:4, | |
2191 | unique_name:8, | |
2192 | more_display:16 | |
2193 | */ | |
c906108c SS |
2194 | |
2195 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2196 | ||
2197 | static char * | |
fba45db2 | 2198 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2199 | { |
23860348 MS |
2200 | *pkt++ = 'q'; /* Info Query */ |
2201 | *pkt++ = 'P'; /* process or thread info */ | |
2202 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2203 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2204 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2205 | return pkt; |
2206 | } | |
2207 | ||
23860348 | 2208 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2209 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2210 | add more fields as time goes by. */ |
c906108c | 2211 | |
23860348 | 2212 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2213 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2214 | fetch registers and its stack? */ |
c5aa993b | 2215 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2216 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2217 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2218 | the process. */ |
c906108c SS |
2219 | |
2220 | static int | |
fba45db2 KB |
2221 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2222 | struct gdb_ext_thread_info *info) | |
c906108c | 2223 | { |
d01949b6 | 2224 | struct remote_state *rs = get_remote_state (); |
c906108c | 2225 | int mask, length; |
cfd77fa1 | 2226 | int tag; |
c906108c | 2227 | threadref ref; |
6d820c5c | 2228 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2229 | int retval = 1; |
2230 | ||
23860348 | 2231 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2232 | info->active = 0; |
2233 | info->display[0] = '\0'; | |
2234 | info->shortname[0] = '\0'; | |
2235 | info->more_display[0] = '\0'; | |
2236 | ||
23860348 MS |
2237 | /* Assume the characters indicating the packet type have been |
2238 | stripped. */ | |
c906108c SS |
2239 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2240 | pkt = unpack_threadid (pkt, &ref); | |
2241 | ||
2242 | if (mask == 0) | |
8a3fe4f8 | 2243 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2244 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2245 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2246 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2247 | return 0; |
2248 | } | |
2249 | copy_threadref (&info->threadid, &ref); | |
2250 | ||
23860348 | 2251 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2252 | |
23860348 MS |
2253 | /* Packets are terminated with nulls. */ |
2254 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2255 | { |
2256 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2257 | pkt = unpack_byte (pkt, &length); /* length */ |
2258 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2259 | { |
8a3fe4f8 | 2260 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2261 | retval = 0; |
2262 | break; | |
2263 | } | |
2264 | if (tag == TAG_THREADID) | |
2265 | { | |
2266 | if (length != 16) | |
2267 | { | |
8a3fe4f8 | 2268 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2269 | retval = 0; |
2270 | break; | |
2271 | } | |
2272 | pkt = unpack_threadid (pkt, &ref); | |
2273 | mask = mask & ~TAG_THREADID; | |
2274 | continue; | |
2275 | } | |
2276 | if (tag == TAG_EXISTS) | |
2277 | { | |
2278 | info->active = stub_unpack_int (pkt, length); | |
2279 | pkt += length; | |
2280 | mask = mask & ~(TAG_EXISTS); | |
2281 | if (length > 8) | |
2282 | { | |
8a3fe4f8 | 2283 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2284 | retval = 0; |
2285 | break; | |
2286 | } | |
2287 | continue; | |
2288 | } | |
2289 | if (tag == TAG_THREADNAME) | |
2290 | { | |
2291 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2292 | mask = mask & ~TAG_THREADNAME; | |
2293 | continue; | |
2294 | } | |
2295 | if (tag == TAG_DISPLAY) | |
2296 | { | |
2297 | pkt = unpack_string (pkt, &info->display[0], length); | |
2298 | mask = mask & ~TAG_DISPLAY; | |
2299 | continue; | |
2300 | } | |
2301 | if (tag == TAG_MOREDISPLAY) | |
2302 | { | |
2303 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2304 | mask = mask & ~TAG_MOREDISPLAY; | |
2305 | continue; | |
2306 | } | |
8a3fe4f8 | 2307 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2308 | break; /* Not a tag we know about. */ |
c906108c SS |
2309 | } |
2310 | return retval; | |
2311 | } | |
2312 | ||
2313 | static int | |
fba45db2 KB |
2314 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2315 | struct gdb_ext_thread_info *info) | |
c906108c | 2316 | { |
d01949b6 | 2317 | struct remote_state *rs = get_remote_state (); |
c906108c | 2318 | int result; |
c906108c | 2319 | |
2e9f7625 DJ |
2320 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2321 | putpkt (rs->buf); | |
6d820c5c | 2322 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2323 | |
2324 | if (rs->buf[0] == '\0') | |
2325 | return 0; | |
2326 | ||
2e9f7625 | 2327 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2328 | threadid, info); |
c906108c SS |
2329 | return result; |
2330 | } | |
2331 | ||
c906108c SS |
2332 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2333 | ||
2334 | static char * | |
fba45db2 KB |
2335 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2336 | threadref *nextthread) | |
c906108c SS |
2337 | { |
2338 | *pkt++ = 'q'; /* info query packet */ | |
2339 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2340 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2341 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2342 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2343 | *pkt = '\0'; | |
2344 | return pkt; | |
2345 | } | |
2346 | ||
2347 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2348 | ||
2349 | static int | |
fba45db2 KB |
2350 | parse_threadlist_response (char *pkt, int result_limit, |
2351 | threadref *original_echo, threadref *resultlist, | |
2352 | int *doneflag) | |
c906108c | 2353 | { |
d01949b6 | 2354 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2355 | char *limit; |
2356 | int count, resultcount, done; | |
2357 | ||
2358 | resultcount = 0; | |
2359 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2360 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2361 | /* done parse past here */ |
c906108c SS |
2362 | pkt = unpack_byte (pkt, &count); /* count field */ |
2363 | pkt = unpack_nibble (pkt, &done); | |
2364 | /* The first threadid is the argument threadid. */ | |
2365 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2366 | while ((count-- > 0) && (pkt < limit)) | |
2367 | { | |
2368 | pkt = unpack_threadid (pkt, resultlist++); | |
2369 | if (resultcount++ >= result_limit) | |
2370 | break; | |
2371 | } | |
2372 | if (doneflag) | |
2373 | *doneflag = done; | |
2374 | return resultcount; | |
2375 | } | |
2376 | ||
2377 | static int | |
fba45db2 KB |
2378 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2379 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2380 | { |
d01949b6 | 2381 | struct remote_state *rs = get_remote_state (); |
c906108c | 2382 | static threadref echo_nextthread; |
c906108c SS |
2383 | int result = 1; |
2384 | ||
23860348 | 2385 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2386 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2387 | >= get_remote_packet_size ()) | |
ea9c271d | 2388 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2389 | |
6d820c5c DJ |
2390 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2391 | putpkt (rs->buf); | |
2392 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2393 | |
d8f2712d | 2394 | if (*rs->buf == '\0') |
21bce120 | 2395 | return 0; |
d8f2712d VP |
2396 | else |
2397 | *result_count = | |
2398 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2399 | threadlist, done); | |
c906108c SS |
2400 | |
2401 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2402 | { | |
23860348 MS |
2403 | /* FIXME: This is a good reason to drop the packet. */ |
2404 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2405 | /* Possabilities : |
2406 | retransmit immediatly - race conditions | |
2407 | retransmit after timeout - yes | |
2408 | exit | |
2409 | wait for packet, then exit | |
2410 | */ | |
8a3fe4f8 | 2411 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2412 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2413 | } |
2414 | if (*result_count <= 0) | |
2415 | { | |
2416 | if (*done != 1) | |
2417 | { | |
8a3fe4f8 | 2418 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2419 | result = 0; |
2420 | } | |
2421 | return result; /* break; */ | |
2422 | } | |
2423 | if (*result_count > result_limit) | |
2424 | { | |
2425 | *result_count = 0; | |
8a3fe4f8 | 2426 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2427 | return 0; |
2428 | } | |
2429 | return result; | |
2430 | } | |
2431 | ||
23860348 MS |
2432 | /* This is the interface between remote and threads, remotes upper |
2433 | interface. */ | |
c906108c SS |
2434 | |
2435 | /* remote_find_new_threads retrieves the thread list and for each | |
2436 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2437 | adding the thread if it does not already exist. This involves |
c906108c SS |
2438 | getting partial thread lists from the remote target so, polling the |
2439 | quit_flag is required. */ | |
2440 | ||
2441 | ||
23860348 | 2442 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2443 | |
2444 | #define MAXTHREADLISTRESULTS 32 | |
2445 | ||
2446 | static int | |
fba45db2 KB |
2447 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2448 | int looplimit) | |
c906108c SS |
2449 | { |
2450 | int done, i, result_count; | |
2451 | int startflag = 1; | |
2452 | int result = 1; | |
2453 | int loopcount = 0; | |
2454 | static threadref nextthread; | |
2455 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2456 | ||
2457 | done = 0; | |
2458 | while (!done) | |
2459 | { | |
2460 | if (loopcount++ > looplimit) | |
2461 | { | |
2462 | result = 0; | |
8a3fe4f8 | 2463 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2464 | break; |
2465 | } | |
2466 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2467 | &done, &result_count, resultthreadlist)) | |
2468 | { | |
2469 | result = 0; | |
2470 | break; | |
2471 | } | |
23860348 | 2472 | /* Clear for later iterations. */ |
c906108c SS |
2473 | startflag = 0; |
2474 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2475 | if (result_count >= 1) | |
2476 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2477 | i = 0; | |
2478 | while (result_count--) | |
2479 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2480 | break; | |
2481 | } | |
2482 | return result; | |
2483 | } | |
2484 | ||
2485 | static int | |
fba45db2 | 2486 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2487 | { |
79d7f229 PA |
2488 | int pid = ptid_get_pid (inferior_ptid); |
2489 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2490 | |
2491 | if (!in_thread_list (ptid)) | |
2492 | add_thread (ptid); | |
c906108c SS |
2493 | return 1; /* continue iterator */ |
2494 | } | |
2495 | ||
2496 | #define CRAZY_MAX_THREADS 1000 | |
2497 | ||
39f77062 KB |
2498 | static ptid_t |
2499 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2500 | { |
d01949b6 | 2501 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2502 | |
2503 | putpkt ("qC"); | |
6d820c5c | 2504 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2505 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2506 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2507 | else |
2508 | return oldpid; | |
2509 | } | |
2510 | ||
802188a7 RM |
2511 | /* Find new threads for info threads command. |
2512 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2513 | */ |
cce74817 JM |
2514 | |
2515 | static void | |
fba45db2 | 2516 | remote_find_new_threads (void) |
c906108c | 2517 | { |
c5aa993b JM |
2518 | remote_threadlist_iterator (remote_newthread_step, 0, |
2519 | CRAZY_MAX_THREADS); | |
c906108c SS |
2520 | } |
2521 | ||
dc146f7c VP |
2522 | #if defined(HAVE_LIBEXPAT) |
2523 | ||
2524 | typedef struct thread_item | |
2525 | { | |
2526 | ptid_t ptid; | |
2527 | char *extra; | |
2528 | int core; | |
2529 | } thread_item_t; | |
2530 | DEF_VEC_O(thread_item_t); | |
2531 | ||
2532 | struct threads_parsing_context | |
2533 | { | |
2534 | VEC (thread_item_t) *items; | |
2535 | }; | |
2536 | ||
2537 | static void | |
2538 | start_thread (struct gdb_xml_parser *parser, | |
2539 | const struct gdb_xml_element *element, | |
2540 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2541 | { | |
2542 | struct threads_parsing_context *data = user_data; | |
2543 | ||
2544 | struct thread_item item; | |
2545 | char *id; | |
3d2c1d41 | 2546 | struct gdb_xml_value *attr; |
dc146f7c | 2547 | |
3d2c1d41 | 2548 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2549 | item.ptid = read_ptid (id, NULL); |
2550 | ||
3d2c1d41 PA |
2551 | attr = xml_find_attribute (attributes, "core"); |
2552 | if (attr != NULL) | |
2553 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2554 | else |
2555 | item.core = -1; | |
2556 | ||
2557 | item.extra = 0; | |
2558 | ||
2559 | VEC_safe_push (thread_item_t, data->items, &item); | |
2560 | } | |
2561 | ||
2562 | static void | |
2563 | end_thread (struct gdb_xml_parser *parser, | |
2564 | const struct gdb_xml_element *element, | |
2565 | void *user_data, const char *body_text) | |
2566 | { | |
2567 | struct threads_parsing_context *data = user_data; | |
2568 | ||
2569 | if (body_text && *body_text) | |
2ae2a0b7 | 2570 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2571 | } |
2572 | ||
2573 | const struct gdb_xml_attribute thread_attributes[] = { | |
2574 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2575 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2576 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2577 | }; | |
2578 | ||
2579 | const struct gdb_xml_element thread_children[] = { | |
2580 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2581 | }; | |
2582 | ||
2583 | const struct gdb_xml_element threads_children[] = { | |
2584 | { "thread", thread_attributes, thread_children, | |
2585 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2586 | start_thread, end_thread }, | |
2587 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2588 | }; | |
2589 | ||
2590 | const struct gdb_xml_element threads_elements[] = { | |
2591 | { "threads", NULL, threads_children, | |
2592 | GDB_XML_EF_NONE, NULL, NULL }, | |
2593 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2594 | }; | |
2595 | ||
02357a4a PA |
2596 | /* Discard the contents of the constructed thread info context. */ |
2597 | ||
2598 | static void | |
2599 | clear_threads_parsing_context (void *p) | |
2600 | { | |
2601 | struct threads_parsing_context *context = p; | |
2602 | int i; | |
2603 | struct thread_item *item; | |
2604 | ||
2605 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2606 | xfree (item->extra); | |
2607 | ||
2608 | VEC_free (thread_item_t, context->items); | |
2609 | } | |
2610 | ||
dc146f7c VP |
2611 | #endif |
2612 | ||
9d1f7ab2 MS |
2613 | /* |
2614 | * Find all threads for info threads command. | |
2615 | * Uses new thread protocol contributed by Cisco. | |
2616 | * Falls back and attempts to use the older method (above) | |
2617 | * if the target doesn't respond to the new method. | |
2618 | */ | |
2619 | ||
0f71a2f6 | 2620 | static void |
28439f5e | 2621 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2622 | { |
d01949b6 | 2623 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2624 | char *bufp; |
79d7f229 | 2625 | ptid_t new_thread; |
0f71a2f6 JM |
2626 | |
2627 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2628 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2629 | |
dc146f7c VP |
2630 | #if defined(HAVE_LIBEXPAT) |
2631 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2632 | { | |
2633 | char *xml = target_read_stralloc (¤t_target, | |
2634 | TARGET_OBJECT_THREADS, NULL); | |
2635 | ||
2636 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2637 | |
dc146f7c VP |
2638 | if (xml && *xml) |
2639 | { | |
dc146f7c | 2640 | struct threads_parsing_context context; |
dc146f7c | 2641 | |
efc0eabd PA |
2642 | context.items = NULL; |
2643 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2644 | |
efc0eabd PA |
2645 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2646 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2647 | { |
2648 | int i; | |
2649 | struct thread_item *item; | |
2650 | ||
3e43a32a MS |
2651 | for (i = 0; |
2652 | VEC_iterate (thread_item_t, context.items, i, item); | |
2653 | ++i) | |
dc146f7c VP |
2654 | { |
2655 | if (!ptid_equal (item->ptid, null_ptid)) | |
2656 | { | |
2657 | struct private_thread_info *info; | |
2658 | /* In non-stop mode, we assume new found threads | |
2659 | are running until proven otherwise with a | |
2660 | stop reply. In all-stop, we can only get | |
2661 | here if all threads are stopped. */ | |
2662 | int running = non_stop ? 1 : 0; | |
2663 | ||
2664 | remote_notice_new_inferior (item->ptid, running); | |
2665 | ||
2666 | info = demand_private_info (item->ptid); | |
2667 | info->core = item->core; | |
2668 | info->extra = item->extra; | |
02357a4a | 2669 | item->extra = NULL; |
dc146f7c | 2670 | } |
dc146f7c VP |
2671 | } |
2672 | } | |
dc146f7c VP |
2673 | } |
2674 | ||
2675 | do_cleanups (back_to); | |
2676 | return; | |
2677 | } | |
2678 | #endif | |
2679 | ||
9d1f7ab2 MS |
2680 | if (use_threadinfo_query) |
2681 | { | |
2682 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2683 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2684 | bufp = rs->buf; |
9d1f7ab2 | 2685 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2686 | { |
9d1f7ab2 MS |
2687 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2688 | { | |
2689 | do | |
2690 | { | |
82f73884 | 2691 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2692 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2693 | { |
74531fed | 2694 | /* In non-stop mode, we assume new found threads |
1941c569 | 2695 | are running until proven otherwise with a |
74531fed PA |
2696 | stop reply. In all-stop, we can only get |
2697 | here if all threads are stopped. */ | |
1941c569 PA |
2698 | int running = non_stop ? 1 : 0; |
2699 | ||
2700 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2701 | } |
9d1f7ab2 MS |
2702 | } |
2703 | while (*bufp++ == ','); /* comma-separated list */ | |
2704 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2705 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2706 | bufp = rs->buf; |
9d1f7ab2 MS |
2707 | } |
2708 | return; /* done */ | |
2709 | } | |
2710 | } | |
2711 | ||
74531fed PA |
2712 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2713 | if (non_stop) | |
2714 | return; | |
2715 | ||
23860348 | 2716 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2717 | use_threadinfo_query = 0; |
2718 | remote_find_new_threads (); | |
2719 | return; | |
2720 | } | |
2721 | ||
802188a7 | 2722 | /* |
9d1f7ab2 MS |
2723 | * Collect a descriptive string about the given thread. |
2724 | * The target may say anything it wants to about the thread | |
2725 | * (typically info about its blocked / runnable state, name, etc.). | |
2726 | * This string will appear in the info threads display. | |
802188a7 | 2727 | * |
9d1f7ab2 MS |
2728 | * Optional: targets are not required to implement this function. |
2729 | */ | |
2730 | ||
2731 | static char * | |
2732 | remote_threads_extra_info (struct thread_info *tp) | |
2733 | { | |
d01949b6 | 2734 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2735 | int result; |
2736 | int set; | |
2737 | threadref id; | |
2738 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2739 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2740 | int n = 0; /* position in display_buf */ |
2741 | ||
2742 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2743 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2744 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2745 | |
60e569b9 PA |
2746 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2747 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2748 | /* This is the main thread which was added by GDB. The remote | |
2749 | server doesn't know about it. */ | |
2750 | return NULL; | |
2751 | ||
dc146f7c VP |
2752 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2753 | { | |
2754 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2755 | |
dc146f7c VP |
2756 | if (info && info->private) |
2757 | return info->private->extra; | |
2758 | else | |
2759 | return NULL; | |
2760 | } | |
2761 | ||
9d1f7ab2 MS |
2762 | if (use_threadextra_query) |
2763 | { | |
82f73884 PA |
2764 | char *b = rs->buf; |
2765 | char *endb = rs->buf + get_remote_packet_size (); | |
2766 | ||
2767 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2768 | b += strlen (b); | |
2769 | write_ptid (b, endb, tp->ptid); | |
2770 | ||
2e9f7625 | 2771 | putpkt (rs->buf); |
6d820c5c | 2772 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2773 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2774 | { |
2e9f7625 DJ |
2775 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2776 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2777 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2778 | return display_buf; |
2779 | } | |
0f71a2f6 | 2780 | } |
9d1f7ab2 MS |
2781 | |
2782 | /* If the above query fails, fall back to the old method. */ | |
2783 | use_threadextra_query = 0; | |
2784 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2785 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2786 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2787 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2788 | if (threadinfo.active) | |
0f71a2f6 | 2789 | { |
9d1f7ab2 | 2790 | if (*threadinfo.shortname) |
2bc416ba | 2791 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2792 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2793 | if (*threadinfo.display) |
2bc416ba | 2794 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2795 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2796 | if (*threadinfo.more_display) |
2bc416ba | 2797 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2798 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2799 | |
2800 | if (n > 0) | |
c5aa993b | 2801 | { |
23860348 | 2802 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2803 | if (',' == display_buf[n-1]) |
2804 | display_buf[n-1] = ' '; | |
2805 | return display_buf; | |
c5aa993b | 2806 | } |
0f71a2f6 | 2807 | } |
9d1f7ab2 | 2808 | return NULL; |
0f71a2f6 | 2809 | } |
c906108c | 2810 | \f |
c5aa993b | 2811 | |
0fb4aa4b PA |
2812 | static int |
2813 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2814 | struct static_tracepoint_marker *marker) | |
2815 | { | |
2816 | struct remote_state *rs = get_remote_state (); | |
2817 | char *p = rs->buf; | |
2818 | ||
2819 | sprintf (p, "qTSTMat:"); | |
2820 | p += strlen (p); | |
2821 | p += hexnumstr (p, addr); | |
2822 | putpkt (rs->buf); | |
2823 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2824 | p = rs->buf; | |
2825 | ||
2826 | if (*p == 'E') | |
2827 | error (_("Remote failure reply: %s"), p); | |
2828 | ||
2829 | if (*p++ == 'm') | |
2830 | { | |
2831 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2832 | return 1; | |
2833 | } | |
2834 | ||
2835 | return 0; | |
2836 | } | |
2837 | ||
2838 | static void | |
2839 | free_current_marker (void *arg) | |
2840 | { | |
2841 | struct static_tracepoint_marker **marker_p = arg; | |
2842 | ||
2843 | if (*marker_p != NULL) | |
2844 | { | |
2845 | release_static_tracepoint_marker (*marker_p); | |
2846 | xfree (*marker_p); | |
2847 | } | |
2848 | else | |
2849 | *marker_p = NULL; | |
2850 | } | |
2851 | ||
2852 | static VEC(static_tracepoint_marker_p) * | |
2853 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2854 | { | |
2855 | struct remote_state *rs = get_remote_state (); | |
2856 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2857 | struct static_tracepoint_marker *marker = NULL; | |
2858 | struct cleanup *old_chain; | |
2859 | char *p; | |
2860 | ||
2861 | /* Ask for a first packet of static tracepoint marker | |
2862 | definition. */ | |
2863 | putpkt ("qTfSTM"); | |
2864 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2865 | p = rs->buf; | |
2866 | if (*p == 'E') | |
2867 | error (_("Remote failure reply: %s"), p); | |
2868 | ||
2869 | old_chain = make_cleanup (free_current_marker, &marker); | |
2870 | ||
2871 | while (*p++ == 'm') | |
2872 | { | |
2873 | if (marker == NULL) | |
2874 | marker = XCNEW (struct static_tracepoint_marker); | |
2875 | ||
2876 | do | |
2877 | { | |
2878 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2879 | ||
2880 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2881 | { | |
2882 | VEC_safe_push (static_tracepoint_marker_p, | |
2883 | markers, marker); | |
2884 | marker = NULL; | |
2885 | } | |
2886 | else | |
2887 | { | |
2888 | release_static_tracepoint_marker (marker); | |
2889 | memset (marker, 0, sizeof (*marker)); | |
2890 | } | |
2891 | } | |
2892 | while (*p++ == ','); /* comma-separated list */ | |
2893 | /* Ask for another packet of static tracepoint definition. */ | |
2894 | putpkt ("qTsSTM"); | |
2895 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2896 | p = rs->buf; | |
2897 | } | |
2898 | ||
2899 | do_cleanups (old_chain); | |
2900 | return markers; | |
2901 | } | |
2902 | ||
2903 | \f | |
10760264 JB |
2904 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2905 | ||
2906 | static ptid_t | |
2907 | remote_get_ada_task_ptid (long lwp, long thread) | |
2908 | { | |
2909 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2910 | } | |
2911 | \f | |
2912 | ||
24b06219 | 2913 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2914 | |
2915 | static void | |
fba45db2 | 2916 | extended_remote_restart (void) |
c906108c | 2917 | { |
d01949b6 | 2918 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2919 | |
2920 | /* Send the restart command; for reasons I don't understand the | |
2921 | remote side really expects a number after the "R". */ | |
ea9c271d | 2922 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2923 | putpkt (rs->buf); |
c906108c | 2924 | |
ad9a8f3f | 2925 | remote_fileio_reset (); |
c906108c SS |
2926 | } |
2927 | \f | |
2928 | /* Clean up connection to a remote debugger. */ | |
2929 | ||
c906108c | 2930 | static void |
fba45db2 | 2931 | remote_close (int quitting) |
c906108c | 2932 | { |
d3fd5342 PA |
2933 | if (remote_desc == NULL) |
2934 | return; /* already closed */ | |
2935 | ||
2936 | /* Make sure we leave stdin registered in the event loop, and we | |
2937 | don't leave the async SIGINT signal handler installed. */ | |
2938 | remote_terminal_ours (); | |
ce5ce7ed | 2939 | |
d3fd5342 PA |
2940 | serial_close (remote_desc); |
2941 | remote_desc = NULL; | |
ce5ce7ed PA |
2942 | |
2943 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2944 | of all the inferiors and their threads we were controlling. |
2945 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
2946 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 2947 | inferior_ptid = null_ptid; |
f67fd822 | 2948 | discard_all_inferiors (); |
ce5ce7ed | 2949 | |
74531fed PA |
2950 | /* We're no longer interested in any of these events. */ |
2951 | discard_pending_stop_replies (-1); | |
2952 | ||
2953 | if (remote_async_inferior_event_token) | |
2954 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2955 | if (remote_async_get_pending_events_token) | |
2956 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2957 | } |
2958 | ||
23860348 | 2959 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2960 | |
2961 | static void | |
fba45db2 | 2962 | get_offsets (void) |
c906108c | 2963 | { |
d01949b6 | 2964 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2965 | char *buf; |
085dd6e6 | 2966 | char *ptr; |
31d99776 DJ |
2967 | int lose, num_segments = 0, do_sections, do_segments; |
2968 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2969 | struct section_offsets *offs; |
31d99776 DJ |
2970 | struct symfile_segment_data *data; |
2971 | ||
2972 | if (symfile_objfile == NULL) | |
2973 | return; | |
c906108c SS |
2974 | |
2975 | putpkt ("qOffsets"); | |
6d820c5c | 2976 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2977 | buf = rs->buf; |
c906108c SS |
2978 | |
2979 | if (buf[0] == '\000') | |
2980 | return; /* Return silently. Stub doesn't support | |
23860348 | 2981 | this command. */ |
c906108c SS |
2982 | if (buf[0] == 'E') |
2983 | { | |
8a3fe4f8 | 2984 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2985 | return; |
2986 | } | |
2987 | ||
2988 | /* Pick up each field in turn. This used to be done with scanf, but | |
2989 | scanf will make trouble if CORE_ADDR size doesn't match | |
2990 | conversion directives correctly. The following code will work | |
2991 | with any size of CORE_ADDR. */ | |
2992 | text_addr = data_addr = bss_addr = 0; | |
2993 | ptr = buf; | |
2994 | lose = 0; | |
2995 | ||
2996 | if (strncmp (ptr, "Text=", 5) == 0) | |
2997 | { | |
2998 | ptr += 5; | |
2999 | /* Don't use strtol, could lose on big values. */ | |
3000 | while (*ptr && *ptr != ';') | |
3001 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3002 | |
31d99776 DJ |
3003 | if (strncmp (ptr, ";Data=", 6) == 0) |
3004 | { | |
3005 | ptr += 6; | |
3006 | while (*ptr && *ptr != ';') | |
3007 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3008 | } | |
3009 | else | |
3010 | lose = 1; | |
3011 | ||
3012 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3013 | { | |
3014 | ptr += 5; | |
3015 | while (*ptr && *ptr != ';') | |
3016 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3017 | |
31d99776 DJ |
3018 | if (bss_addr != data_addr) |
3019 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3020 | } | |
3021 | else | |
3022 | lose = 1; | |
3023 | } | |
3024 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3025 | { |
31d99776 DJ |
3026 | ptr += 8; |
3027 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3028 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3029 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3030 | num_segments = 1; | |
3031 | ||
3032 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3033 | { | |
3034 | ptr += 9; | |
3035 | while (*ptr && *ptr != ';') | |
3036 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3037 | num_segments++; | |
3038 | } | |
c906108c SS |
3039 | } |
3040 | else | |
3041 | lose = 1; | |
3042 | ||
3043 | if (lose) | |
8a3fe4f8 | 3044 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3045 | else if (*ptr != '\0') |
3046 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3047 | |
802188a7 | 3048 | offs = ((struct section_offsets *) |
a39a16c4 | 3049 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3050 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3051 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3052 | |
31d99776 DJ |
3053 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3054 | do_segments = (data != NULL); | |
3055 | do_sections = num_segments == 0; | |
c906108c | 3056 | |
28c32713 | 3057 | if (num_segments > 0) |
31d99776 | 3058 | { |
31d99776 DJ |
3059 | segments[0] = text_addr; |
3060 | segments[1] = data_addr; | |
3061 | } | |
28c32713 JB |
3062 | /* If we have two segments, we can still try to relocate everything |
3063 | by assuming that the .text and .data offsets apply to the whole | |
3064 | text and data segments. Convert the offsets given in the packet | |
3065 | to base addresses for symfile_map_offsets_to_segments. */ | |
3066 | else if (data && data->num_segments == 2) | |
3067 | { | |
3068 | segments[0] = data->segment_bases[0] + text_addr; | |
3069 | segments[1] = data->segment_bases[1] + data_addr; | |
3070 | num_segments = 2; | |
3071 | } | |
8d385431 DJ |
3072 | /* If the object file has only one segment, assume that it is text |
3073 | rather than data; main programs with no writable data are rare, | |
3074 | but programs with no code are useless. Of course the code might | |
3075 | have ended up in the data segment... to detect that we would need | |
3076 | the permissions here. */ | |
3077 | else if (data && data->num_segments == 1) | |
3078 | { | |
3079 | segments[0] = data->segment_bases[0] + text_addr; | |
3080 | num_segments = 1; | |
3081 | } | |
28c32713 JB |
3082 | /* There's no way to relocate by segment. */ |
3083 | else | |
3084 | do_segments = 0; | |
31d99776 DJ |
3085 | |
3086 | if (do_segments) | |
3087 | { | |
3088 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3089 | offs, num_segments, segments); | |
3090 | ||
3091 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3092 | error (_("Can not handle qOffsets TextSeg " |
3093 | "response with this symbol file")); | |
31d99776 DJ |
3094 | |
3095 | if (ret > 0) | |
3096 | do_sections = 0; | |
3097 | } | |
c906108c | 3098 | |
9ef895d6 DJ |
3099 | if (data) |
3100 | free_symfile_segment_data (data); | |
31d99776 DJ |
3101 | |
3102 | if (do_sections) | |
3103 | { | |
3104 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3105 | ||
3e43a32a MS |
3106 | /* This is a temporary kludge to force data and bss to use the |
3107 | same offsets because that's what nlmconv does now. The real | |
3108 | solution requires changes to the stub and remote.c that I | |
3109 | don't have time to do right now. */ | |
31d99776 DJ |
3110 | |
3111 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3112 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3113 | } | |
c906108c SS |
3114 | |
3115 | objfile_relocate (symfile_objfile, offs); | |
3116 | } | |
3117 | ||
74531fed PA |
3118 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3119 | threads we know are stopped already. This is used during the | |
3120 | initial remote connection in non-stop mode --- threads that are | |
3121 | reported as already being stopped are left stopped. */ | |
3122 | ||
3123 | static int | |
3124 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3125 | { | |
3126 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3127 | if (peek_stop_reply (thread->ptid)) | |
3128 | set_stop_requested (thread->ptid, 1); | |
3129 | ||
3130 | return 0; | |
3131 | } | |
3132 | ||
9a7071a8 JB |
3133 | /* Send interrupt_sequence to remote target. */ |
3134 | static void | |
eeae04df | 3135 | send_interrupt_sequence (void) |
9a7071a8 JB |
3136 | { |
3137 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3138 | serial_write (remote_desc, "\x03", 1); | |
3139 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3140 | serial_send_break (remote_desc); | |
3141 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3142 | { | |
3143 | serial_send_break (remote_desc); | |
3144 | serial_write (remote_desc, "g", 1); | |
3145 | } | |
3146 | else | |
3147 | internal_error (__FILE__, __LINE__, | |
3148 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3149 | interrupt_sequence_mode); | |
3150 | } | |
3151 | ||
9cbc821d | 3152 | static void |
04bd08de | 3153 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3154 | { |
c8d104ad PA |
3155 | struct remote_state *rs = get_remote_state (); |
3156 | struct packet_config *noack_config; | |
2d717e4f | 3157 | char *wait_status = NULL; |
8621d6a9 | 3158 | |
23860348 | 3159 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3160 | |
9a7071a8 JB |
3161 | if (interrupt_on_connect) |
3162 | send_interrupt_sequence (); | |
3163 | ||
57e12211 TT |
3164 | /* Ack any packet which the remote side has already sent. */ |
3165 | serial_write (remote_desc, "+", 1); | |
3166 | ||
c8d104ad PA |
3167 | /* The first packet we send to the target is the optional "supported |
3168 | packets" request. If the target can answer this, it will tell us | |
3169 | which later probes to skip. */ | |
3170 | remote_query_supported (); | |
3171 | ||
d914c394 SS |
3172 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3173 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3174 | remote_set_permissions (); | |
3175 | ||
c8d104ad PA |
3176 | /* Next, we possibly activate noack mode. |
3177 | ||
3178 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3179 | enable noack mode if the stub reported a wish for it with | |
3180 | qSupported. | |
3181 | ||
3182 | If set to TRUE, then enable noack mode even if the stub didn't | |
3183 | report it in qSupported. If the stub doesn't reply OK, the | |
3184 | session ends with an error. | |
3185 | ||
3186 | If FALSE, then don't activate noack mode, regardless of what the | |
3187 | stub claimed should be the default with qSupported. */ | |
3188 | ||
3189 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3190 | ||
3191 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3192 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3193 | && noack_config->support == PACKET_ENABLE)) | |
3194 | { | |
3195 | putpkt ("QStartNoAckMode"); | |
3196 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3197 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3198 | rs->noack_mode = 1; | |
3199 | } | |
3200 | ||
04bd08de | 3201 | if (extended_p) |
5fe04517 PA |
3202 | { |
3203 | /* Tell the remote that we are using the extended protocol. */ | |
3204 | putpkt ("!"); | |
3205 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3206 | } | |
3207 | ||
d962ef82 DJ |
3208 | /* Next, if the target can specify a description, read it. We do |
3209 | this before anything involving memory or registers. */ | |
3210 | target_find_description (); | |
3211 | ||
6c95b8df PA |
3212 | /* Next, now that we know something about the target, update the |
3213 | address spaces in the program spaces. */ | |
3214 | update_address_spaces (); | |
3215 | ||
50c71eaf PA |
3216 | /* On OSs where the list of libraries is global to all |
3217 | processes, we fetch them early. */ | |
3218 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3219 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3220 | |
74531fed PA |
3221 | if (non_stop) |
3222 | { | |
3223 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3224 | error (_("Non-stop mode requested, but remote " |
3225 | "does not support non-stop")); | |
74531fed PA |
3226 | |
3227 | putpkt ("QNonStop:1"); | |
3228 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3229 | ||
3230 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3231 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3232 | |
3233 | /* Find about threads and processes the stub is already | |
3234 | controlling. We default to adding them in the running state. | |
3235 | The '?' query below will then tell us about which threads are | |
3236 | stopped. */ | |
04bd08de | 3237 | remote_threads_info (target); |
74531fed PA |
3238 | } |
3239 | else if (rs->non_stop_aware) | |
3240 | { | |
3241 | /* Don't assume that the stub can operate in all-stop mode. | |
3242 | Request it explicitely. */ | |
3243 | putpkt ("QNonStop:0"); | |
3244 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3245 | ||
3246 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3247 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3248 | } |
3249 | ||
2d717e4f DJ |
3250 | /* Check whether the target is running now. */ |
3251 | putpkt ("?"); | |
3252 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3253 | ||
74531fed | 3254 | if (!non_stop) |
2d717e4f | 3255 | { |
74531fed | 3256 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3257 | { |
04bd08de | 3258 | if (!extended_p) |
74531fed | 3259 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3260 | |
3261 | /* We're connected, but not running. Drop out before we | |
3262 | call start_remote. */ | |
3263 | return; | |
2d717e4f DJ |
3264 | } |
3265 | else | |
74531fed | 3266 | { |
74531fed PA |
3267 | /* Save the reply for later. */ |
3268 | wait_status = alloca (strlen (rs->buf) + 1); | |
3269 | strcpy (wait_status, rs->buf); | |
3270 | } | |
3271 | ||
3272 | /* Let the stub know that we want it to return the thread. */ | |
3273 | set_continue_thread (minus_one_ptid); | |
3274 | ||
3275 | /* Without this, some commands which require an active target | |
3276 | (such as kill) won't work. This variable serves (at least) | |
3277 | double duty as both the pid of the target process (if it has | |
3278 | such), and as a flag indicating that a target is active. | |
3279 | These functions should be split out into seperate variables, | |
3280 | especially since GDB will someday have a notion of debugging | |
3281 | several processes. */ | |
3282 | inferior_ptid = magic_null_ptid; | |
3283 | ||
3284 | /* Now, if we have thread information, update inferior_ptid. */ | |
3285 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3286 | ||
0b16c5cf | 3287 | remote_add_inferior (ptid_get_pid (inferior_ptid), -1); |
74531fed PA |
3288 | |
3289 | /* Always add the main thread. */ | |
3290 | add_thread_silent (inferior_ptid); | |
3291 | ||
6e586cc5 YQ |
3292 | /* init_wait_for_inferior should be called before get_offsets in order |
3293 | to manage `inserted' flag in bp loc in a correct state. | |
3294 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3295 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3296 | start_remote, set `inserted' flag to 1. In the initialization of | |
3297 | inferior, breakpoint_init_inferior should be called first, and then | |
3298 | breakpoint_re_set can be called. If this order is broken, state of | |
3299 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3300 | manipulation. */ | |
3301 | init_wait_for_inferior (); | |
3302 | ||
74531fed PA |
3303 | get_offsets (); /* Get text, data & bss offsets. */ |
3304 | ||
d962ef82 DJ |
3305 | /* If we could not find a description using qXfer, and we know |
3306 | how to do it some other way, try again. This is not | |
3307 | supported for non-stop; it could be, but it is tricky if | |
3308 | there are no stopped threads when we connect. */ | |
04bd08de | 3309 | if (remote_read_description_p (target) |
d962ef82 DJ |
3310 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3311 | { | |
3312 | target_clear_description (); | |
3313 | target_find_description (); | |
3314 | } | |
3315 | ||
74531fed PA |
3316 | /* Use the previously fetched status. */ |
3317 | gdb_assert (wait_status != NULL); | |
3318 | strcpy (rs->buf, wait_status); | |
3319 | rs->cached_wait_status = 1; | |
3320 | ||
3321 | immediate_quit--; | |
04bd08de | 3322 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3323 | } |
3324 | else | |
3325 | { | |
68c97600 PA |
3326 | /* Clear WFI global state. Do this before finding about new |
3327 | threads and inferiors, and setting the current inferior. | |
3328 | Otherwise we would clear the proceed status of the current | |
3329 | inferior when we want its stop_soon state to be preserved | |
3330 | (see notice_new_inferior). */ | |
3331 | init_wait_for_inferior (); | |
3332 | ||
74531fed PA |
3333 | /* In non-stop, we will either get an "OK", meaning that there |
3334 | are no stopped threads at this time; or, a regular stop | |
3335 | reply. In the latter case, there may be more than one thread | |
3336 | stopped --- we pull them all out using the vStopped | |
3337 | mechanism. */ | |
3338 | if (strcmp (rs->buf, "OK") != 0) | |
3339 | { | |
3340 | struct stop_reply *stop_reply; | |
3341 | struct cleanup *old_chain; | |
2d717e4f | 3342 | |
74531fed PA |
3343 | stop_reply = stop_reply_xmalloc (); |
3344 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3345 | |
74531fed PA |
3346 | remote_parse_stop_reply (rs->buf, stop_reply); |
3347 | discard_cleanups (old_chain); | |
c0a2216e | 3348 | |
74531fed PA |
3349 | /* get_pending_stop_replies acks this one, and gets the rest |
3350 | out. */ | |
3351 | pending_stop_reply = stop_reply; | |
3352 | remote_get_pending_stop_replies (); | |
c906108c | 3353 | |
74531fed PA |
3354 | /* Make sure that threads that were stopped remain |
3355 | stopped. */ | |
3356 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3357 | } | |
2d717e4f | 3358 | |
74531fed PA |
3359 | if (target_can_async_p ()) |
3360 | target_async (inferior_event_handler, 0); | |
c906108c | 3361 | |
74531fed PA |
3362 | if (thread_count () == 0) |
3363 | { | |
04bd08de | 3364 | if (!extended_p) |
74531fed | 3365 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3366 | |
c35b1492 PA |
3367 | /* We're connected, but not running. Drop out before we |
3368 | call start_remote. */ | |
3369 | return; | |
3370 | } | |
74531fed PA |
3371 | |
3372 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3373 | |
74531fed PA |
3374 | /* Force the stub to choose a thread. */ |
3375 | set_general_thread (null_ptid); | |
c906108c | 3376 | |
74531fed PA |
3377 | /* Query it. */ |
3378 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3379 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3380 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3381 | |
74531fed PA |
3382 | get_offsets (); /* Get text, data & bss offsets. */ |
3383 | ||
3384 | /* In non-stop mode, any cached wait status will be stored in | |
3385 | the stop reply queue. */ | |
3386 | gdb_assert (wait_status == NULL); | |
f0223081 | 3387 | |
2455069d UW |
3388 | /* Report all signals during attach/startup. */ |
3389 | remote_pass_signals (0, NULL); | |
74531fed | 3390 | } |
c8d104ad | 3391 | |
c8d104ad PA |
3392 | /* If we connected to a live target, do some additional setup. */ |
3393 | if (target_has_execution) | |
3394 | { | |
3395 | if (exec_bfd) /* No use without an exec file. */ | |
3396 | remote_check_symbols (symfile_objfile); | |
3397 | } | |
50c71eaf | 3398 | |
d5551862 SS |
3399 | /* Possibly the target has been engaged in a trace run started |
3400 | previously; find out where things are at. */ | |
26afc0d7 | 3401 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3402 | { |
00bf0b85 SS |
3403 | struct uploaded_tp *uploaded_tps = NULL; |
3404 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3405 | ||
00bf0b85 SS |
3406 | if (current_trace_status ()->running) |
3407 | printf_filtered (_("Trace is already running on the target.\n")); | |
3408 | ||
3409 | /* Get trace state variables first, they may be checked when | |
3410 | parsing uploaded commands. */ | |
3411 | ||
3412 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3413 | ||
3414 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3415 | ||
3416 | remote_upload_tracepoints (&uploaded_tps); | |
3417 | ||
3418 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3419 | } |
3420 | ||
2567c7d9 PA |
3421 | /* If breakpoints are global, insert them now. */ |
3422 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3423 | && breakpoints_always_inserted_mode ()) |
3424 | insert_breakpoints (); | |
c906108c SS |
3425 | } |
3426 | ||
3427 | /* Open a connection to a remote debugger. | |
3428 | NAME is the filename used for communication. */ | |
3429 | ||
3430 | static void | |
fba45db2 | 3431 | remote_open (char *name, int from_tty) |
c906108c | 3432 | { |
75c99385 | 3433 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3434 | } |
3435 | ||
c906108c SS |
3436 | /* Open a connection to a remote debugger using the extended |
3437 | remote gdb protocol. NAME is the filename used for communication. */ | |
3438 | ||
3439 | static void | |
fba45db2 | 3440 | extended_remote_open (char *name, int from_tty) |
c906108c | 3441 | { |
75c99385 | 3442 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3443 | } |
3444 | ||
c906108c SS |
3445 | /* Generic code for opening a connection to a remote target. */ |
3446 | ||
d471ea57 AC |
3447 | static void |
3448 | init_all_packet_configs (void) | |
3449 | { | |
3450 | int i; | |
a744cf53 | 3451 | |
444abaca DJ |
3452 | for (i = 0; i < PACKET_MAX; i++) |
3453 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3454 | } |
3455 | ||
23860348 | 3456 | /* Symbol look-up. */ |
dc8acb97 MS |
3457 | |
3458 | static void | |
3459 | remote_check_symbols (struct objfile *objfile) | |
3460 | { | |
d01949b6 | 3461 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3462 | char *msg, *reply, *tmp; |
3463 | struct minimal_symbol *sym; | |
3464 | int end; | |
3465 | ||
63154eca PA |
3466 | /* The remote side has no concept of inferiors that aren't running |
3467 | yet, it only knows about running processes. If we're connected | |
3468 | but our current inferior is not running, we should not invite the | |
3469 | remote target to request symbol lookups related to its | |
3470 | (unrelated) current process. */ | |
3471 | if (!target_has_execution) | |
3472 | return; | |
3473 | ||
444abaca | 3474 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3475 | return; |
3476 | ||
63154eca PA |
3477 | /* Make sure the remote is pointing at the right process. Note |
3478 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3479 | set_general_process (); |
3480 | ||
6d820c5c DJ |
3481 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3482 | because we need both at the same time. */ | |
ea9c271d | 3483 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3484 | |
23860348 | 3485 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3486 | |
3487 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3488 | getpkt (&rs->buf, &rs->buf_size, 0); |
3489 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3490 | reply = rs->buf; |
dc8acb97 MS |
3491 | |
3492 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3493 | { | |
3494 | tmp = &reply[8]; | |
cfd77fa1 | 3495 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3496 | msg[end] = '\0'; |
3497 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3498 | if (sym == NULL) | |
ea9c271d | 3499 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3500 | else |
2bbe3cc1 | 3501 | { |
5af949e3 | 3502 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3503 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3504 | ||
3505 | /* If this is a function address, return the start of code | |
3506 | instead of any data function descriptor. */ | |
1cf3db46 | 3507 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3508 | sym_addr, |
3509 | ¤t_target); | |
3510 | ||
3511 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3512 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3513 | } |
3514 | ||
dc8acb97 | 3515 | putpkt (msg); |
6d820c5c | 3516 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3517 | reply = rs->buf; |
dc8acb97 MS |
3518 | } |
3519 | } | |
3520 | ||
9db8d71f DJ |
3521 | static struct serial * |
3522 | remote_serial_open (char *name) | |
3523 | { | |
3524 | static int udp_warning = 0; | |
3525 | ||
3526 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3527 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3528 | serial connection is reliable and not the serial connection promising | |
3529 | to be. */ | |
3530 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3531 | { | |
3e43a32a MS |
3532 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3533 | "Some events may be lost, rendering further debugging " | |
3534 | "impossible.")); | |
9db8d71f DJ |
3535 | udp_warning = 1; |
3536 | } | |
3537 | ||
3538 | return serial_open (name); | |
3539 | } | |
3540 | ||
d914c394 SS |
3541 | /* Inform the target of our permission settings. The permission flags |
3542 | work without this, but if the target knows the settings, it can do | |
3543 | a couple things. First, it can add its own check, to catch cases | |
3544 | that somehow manage to get by the permissions checks in target | |
3545 | methods. Second, if the target is wired to disallow particular | |
3546 | settings (for instance, a system in the field that is not set up to | |
3547 | be able to stop at a breakpoint), it can object to any unavailable | |
3548 | permissions. */ | |
3549 | ||
3550 | void | |
3551 | remote_set_permissions (void) | |
3552 | { | |
3553 | struct remote_state *rs = get_remote_state (); | |
3554 | ||
3555 | sprintf (rs->buf, "QAllow:" | |
3556 | "WriteReg:%x;WriteMem:%x;" | |
3557 | "InsertBreak:%x;InsertTrace:%x;" | |
3558 | "InsertFastTrace:%x;Stop:%x", | |
3559 | may_write_registers, may_write_memory, | |
3560 | may_insert_breakpoints, may_insert_tracepoints, | |
3561 | may_insert_fast_tracepoints, may_stop); | |
3562 | putpkt (rs->buf); | |
3563 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3564 | ||
3565 | /* If the target didn't like the packet, warn the user. Do not try | |
3566 | to undo the user's settings, that would just be maddening. */ | |
3567 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3568 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3569 | } |
3570 | ||
be2a5f71 DJ |
3571 | /* This type describes each known response to the qSupported |
3572 | packet. */ | |
3573 | struct protocol_feature | |
3574 | { | |
3575 | /* The name of this protocol feature. */ | |
3576 | const char *name; | |
3577 | ||
3578 | /* The default for this protocol feature. */ | |
3579 | enum packet_support default_support; | |
3580 | ||
3581 | /* The function to call when this feature is reported, or after | |
3582 | qSupported processing if the feature is not supported. | |
3583 | The first argument points to this structure. The second | |
3584 | argument indicates whether the packet requested support be | |
3585 | enabled, disabled, or probed (or the default, if this function | |
3586 | is being called at the end of processing and this feature was | |
3587 | not reported). The third argument may be NULL; if not NULL, it | |
3588 | is a NUL-terminated string taken from the packet following | |
3589 | this feature's name and an equals sign. */ | |
3590 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3591 | const char *); | |
3592 | ||
3593 | /* The corresponding packet for this feature. Only used if | |
3594 | FUNC is remote_supported_packet. */ | |
3595 | int packet; | |
3596 | }; | |
3597 | ||
be2a5f71 DJ |
3598 | static void |
3599 | remote_supported_packet (const struct protocol_feature *feature, | |
3600 | enum packet_support support, | |
3601 | const char *argument) | |
3602 | { | |
3603 | if (argument) | |
3604 | { | |
3605 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3606 | " \"%s\"."), feature->name); | |
3607 | return; | |
3608 | } | |
3609 | ||
3610 | if (remote_protocol_packets[feature->packet].support | |
3611 | == PACKET_SUPPORT_UNKNOWN) | |
3612 | remote_protocol_packets[feature->packet].support = support; | |
3613 | } | |
be2a5f71 DJ |
3614 | |
3615 | static void | |
3616 | remote_packet_size (const struct protocol_feature *feature, | |
3617 | enum packet_support support, const char *value) | |
3618 | { | |
3619 | struct remote_state *rs = get_remote_state (); | |
3620 | ||
3621 | int packet_size; | |
3622 | char *value_end; | |
3623 | ||
3624 | if (support != PACKET_ENABLE) | |
3625 | return; | |
3626 | ||
3627 | if (value == NULL || *value == '\0') | |
3628 | { | |
3629 | warning (_("Remote target reported \"%s\" without a size."), | |
3630 | feature->name); | |
3631 | return; | |
3632 | } | |
3633 | ||
3634 | errno = 0; | |
3635 | packet_size = strtol (value, &value_end, 16); | |
3636 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3637 | { | |
3638 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3639 | feature->name, value); | |
3640 | return; | |
3641 | } | |
3642 | ||
3643 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3644 | { | |
3645 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3646 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3647 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3648 | } | |
3649 | ||
3650 | /* Record the new maximum packet size. */ | |
3651 | rs->explicit_packet_size = packet_size; | |
3652 | } | |
3653 | ||
82f73884 PA |
3654 | static void |
3655 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3656 | enum packet_support support, const char *value) | |
3657 | { | |
3658 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3659 | |
82f73884 PA |
3660 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3661 | } | |
3662 | ||
74531fed PA |
3663 | static void |
3664 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3665 | enum packet_support support, const char *value) | |
3666 | { | |
3667 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3668 | |
74531fed PA |
3669 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3670 | } | |
3671 | ||
782b2b07 SS |
3672 | static void |
3673 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3674 | enum packet_support support, | |
3675 | const char *value) | |
3676 | { | |
3677 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3678 | |
782b2b07 SS |
3679 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3680 | } | |
3681 | ||
7a697b8d SS |
3682 | static void |
3683 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3684 | enum packet_support support, | |
3685 | const char *value) | |
3686 | { | |
3687 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3688 | |
7a697b8d SS |
3689 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3690 | } | |
3691 | ||
0fb4aa4b PA |
3692 | static void |
3693 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3694 | enum packet_support support, | |
3695 | const char *value) | |
3696 | { | |
3697 | struct remote_state *rs = get_remote_state (); | |
3698 | ||
3699 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3700 | } | |
3701 | ||
1e4d1764 YQ |
3702 | static void |
3703 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3704 | enum packet_support support, | |
3705 | const char *value) | |
3706 | { | |
3707 | struct remote_state *rs = get_remote_state (); | |
3708 | ||
3709 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3710 | } | |
3711 | ||
d5551862 SS |
3712 | static void |
3713 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3714 | enum packet_support support, | |
3715 | const char *value) | |
3716 | { | |
3717 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3718 | |
d5551862 SS |
3719 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3720 | } | |
3721 | ||
d248b706 KY |
3722 | static void |
3723 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3724 | enum packet_support support, | |
3725 | const char *value) | |
3726 | { | |
3727 | struct remote_state *rs = get_remote_state (); | |
3728 | ||
3729 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3730 | } | |
3731 | ||
3065dfb6 SS |
3732 | static void |
3733 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3734 | enum packet_support support, | |
3735 | const char *value) | |
3736 | { | |
3737 | struct remote_state *rs = get_remote_state (); | |
3738 | ||
3739 | rs->string_tracing = (support == PACKET_ENABLE); | |
3740 | } | |
3741 | ||
be2a5f71 | 3742 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3743 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3744 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3745 | PACKET_qXfer_auxv }, |
23181151 DJ |
3746 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3747 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3748 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3749 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3750 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3751 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3752 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3753 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3754 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3755 | PACKET_qXfer_spu_read }, | |
3756 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3757 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3758 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3759 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3760 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3761 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3762 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3763 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3764 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3765 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3766 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3767 | PACKET_QStartNoAckMode }, | |
82f73884 | 3768 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3769 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3770 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3771 | PACKET_qXfer_siginfo_read }, | |
3772 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3773 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3774 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3775 | PACKET_ConditionalTracepoints }, | |
7a697b8d SS |
3776 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3777 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3778 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3779 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3780 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3781 | PACKET_InstallInTrace}, | |
d5551862 SS |
3782 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3783 | -1 }, | |
40ab02ce MS |
3784 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3785 | PACKET_bc }, | |
3786 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3787 | PACKET_bs }, | |
409873ef SS |
3788 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3789 | PACKET_TracepointSource }, | |
d914c394 SS |
3790 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3791 | PACKET_QAllow }, | |
d248b706 KY |
3792 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3793 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3794 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3795 | PACKET_qXfer_fdpic }, | |
03583c20 UW |
3796 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3797 | PACKET_QDisableRandomization }, | |
3065dfb6 SS |
3798 | { "tracenz", PACKET_DISABLE, |
3799 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3800 | }; |
3801 | ||
c8d5aac9 L |
3802 | static char *remote_support_xml; |
3803 | ||
3804 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3805 | ||
3806 | void | |
6e39997a | 3807 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3808 | { |
3809 | #if defined(HAVE_LIBEXPAT) | |
3810 | if (remote_support_xml == NULL) | |
c4f7c687 | 3811 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3812 | else |
3813 | { | |
3814 | char *copy = xstrdup (remote_support_xml + 13); | |
3815 | char *p = strtok (copy, ","); | |
3816 | ||
3817 | do | |
3818 | { | |
3819 | if (strcmp (p, xml) == 0) | |
3820 | { | |
3821 | /* already there */ | |
3822 | xfree (copy); | |
3823 | return; | |
3824 | } | |
3825 | } | |
3826 | while ((p = strtok (NULL, ",")) != NULL); | |
3827 | xfree (copy); | |
3828 | ||
94b0dee1 PA |
3829 | remote_support_xml = reconcat (remote_support_xml, |
3830 | remote_support_xml, ",", xml, | |
3831 | (char *) NULL); | |
c8d5aac9 L |
3832 | } |
3833 | #endif | |
3834 | } | |
3835 | ||
3836 | static char * | |
3837 | remote_query_supported_append (char *msg, const char *append) | |
3838 | { | |
3839 | if (msg) | |
94b0dee1 | 3840 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3841 | else |
3842 | return xstrdup (append); | |
3843 | } | |
3844 | ||
be2a5f71 DJ |
3845 | static void |
3846 | remote_query_supported (void) | |
3847 | { | |
3848 | struct remote_state *rs = get_remote_state (); | |
3849 | char *next; | |
3850 | int i; | |
3851 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3852 | ||
3853 | /* The packet support flags are handled differently for this packet | |
3854 | than for most others. We treat an error, a disabled packet, and | |
3855 | an empty response identically: any features which must be reported | |
3856 | to be used will be automatically disabled. An empty buffer | |
3857 | accomplishes this, since that is also the representation for a list | |
3858 | containing no features. */ | |
3859 | ||
3860 | rs->buf[0] = 0; | |
3861 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3862 | { | |
c8d5aac9 | 3863 | char *q = NULL; |
94b0dee1 | 3864 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 L |
3865 | |
3866 | if (rs->extended) | |
3867 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 L |
3868 | |
3869 | if (remote_support_xml) | |
3870 | q = remote_query_supported_append (q, remote_support_xml); | |
3871 | ||
dde08ee1 PA |
3872 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3873 | ||
3874 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3875 | putpkt (q); | |
82f73884 | 3876 | |
94b0dee1 PA |
3877 | do_cleanups (old_chain); |
3878 | ||
be2a5f71 DJ |
3879 | getpkt (&rs->buf, &rs->buf_size, 0); |
3880 | ||
3881 | /* If an error occured, warn, but do not return - just reset the | |
3882 | buffer to empty and go on to disable features. */ | |
3883 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3884 | == PACKET_ERROR) | |
3885 | { | |
3886 | warning (_("Remote failure reply: %s"), rs->buf); | |
3887 | rs->buf[0] = 0; | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | memset (seen, 0, sizeof (seen)); | |
3892 | ||
3893 | next = rs->buf; | |
3894 | while (*next) | |
3895 | { | |
3896 | enum packet_support is_supported; | |
3897 | char *p, *end, *name_end, *value; | |
3898 | ||
3899 | /* First separate out this item from the rest of the packet. If | |
3900 | there's another item after this, we overwrite the separator | |
3901 | (terminated strings are much easier to work with). */ | |
3902 | p = next; | |
3903 | end = strchr (p, ';'); | |
3904 | if (end == NULL) | |
3905 | { | |
3906 | end = p + strlen (p); | |
3907 | next = end; | |
3908 | } | |
3909 | else | |
3910 | { | |
89be2091 DJ |
3911 | *end = '\0'; |
3912 | next = end + 1; | |
3913 | ||
be2a5f71 DJ |
3914 | if (end == p) |
3915 | { | |
3916 | warning (_("empty item in \"qSupported\" response")); | |
3917 | continue; | |
3918 | } | |
be2a5f71 DJ |
3919 | } |
3920 | ||
3921 | name_end = strchr (p, '='); | |
3922 | if (name_end) | |
3923 | { | |
3924 | /* This is a name=value entry. */ | |
3925 | is_supported = PACKET_ENABLE; | |
3926 | value = name_end + 1; | |
3927 | *name_end = '\0'; | |
3928 | } | |
3929 | else | |
3930 | { | |
3931 | value = NULL; | |
3932 | switch (end[-1]) | |
3933 | { | |
3934 | case '+': | |
3935 | is_supported = PACKET_ENABLE; | |
3936 | break; | |
3937 | ||
3938 | case '-': | |
3939 | is_supported = PACKET_DISABLE; | |
3940 | break; | |
3941 | ||
3942 | case '?': | |
3943 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3944 | break; | |
3945 | ||
3946 | default: | |
3e43a32a MS |
3947 | warning (_("unrecognized item \"%s\" " |
3948 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
3949 | continue; |
3950 | } | |
3951 | end[-1] = '\0'; | |
3952 | } | |
3953 | ||
3954 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3955 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
3956 | { | |
3957 | const struct protocol_feature *feature; | |
3958 | ||
3959 | seen[i] = 1; | |
3960 | feature = &remote_protocol_features[i]; | |
3961 | feature->func (feature, is_supported, value); | |
3962 | break; | |
3963 | } | |
3964 | } | |
3965 | ||
3966 | /* If we increased the packet size, make sure to increase the global | |
3967 | buffer size also. We delay this until after parsing the entire | |
3968 | qSupported packet, because this is the same buffer we were | |
3969 | parsing. */ | |
3970 | if (rs->buf_size < rs->explicit_packet_size) | |
3971 | { | |
3972 | rs->buf_size = rs->explicit_packet_size; | |
3973 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
3974 | } | |
3975 | ||
3976 | /* Handle the defaults for unmentioned features. */ | |
3977 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3978 | if (!seen[i]) | |
3979 | { | |
3980 | const struct protocol_feature *feature; | |
3981 | ||
3982 | feature = &remote_protocol_features[i]; | |
3983 | feature->func (feature, feature->default_support, NULL); | |
3984 | } | |
3985 | } | |
3986 | ||
3987 | ||
c906108c | 3988 | static void |
3e43a32a MS |
3989 | remote_open_1 (char *name, int from_tty, |
3990 | struct target_ops *target, int extended_p) | |
c906108c | 3991 | { |
d01949b6 | 3992 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 3993 | |
c906108c | 3994 | if (name == 0) |
8a3fe4f8 | 3995 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 3996 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 3997 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 3998 | |
23860348 | 3999 | /* See FIXME above. */ |
c6ebd6cf | 4000 | if (!target_async_permitted) |
92d1e331 | 4001 | wait_forever_enabled_p = 1; |
6426a772 | 4002 | |
2d717e4f DJ |
4003 | /* If we're connected to a running target, target_preopen will kill it. |
4004 | But if we're connected to a target system with no running process, | |
4005 | then we will still be connected when it returns. Ask this question | |
4006 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4007 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4008 | { |
4009 | if (!from_tty | |
4010 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4011 | pop_target (); | |
4012 | else | |
4013 | error (_("Still connected.")); | |
4014 | } | |
4015 | ||
c906108c SS |
4016 | target_preopen (from_tty); |
4017 | ||
4018 | unpush_target (target); | |
4019 | ||
2d717e4f DJ |
4020 | /* This time without a query. If we were connected to an |
4021 | extended-remote target and target_preopen killed the running | |
4022 | process, we may still be connected. If we are starting "target | |
4023 | remote" now, the extended-remote target will not have been | |
4024 | removed by unpush_target. */ | |
c35b1492 | 4025 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4026 | pop_target (); |
4027 | ||
89be2091 DJ |
4028 | /* Make sure we send the passed signals list the next time we resume. */ |
4029 | xfree (last_pass_packet); | |
4030 | last_pass_packet = NULL; | |
4031 | ||
ad9a8f3f | 4032 | remote_fileio_reset (); |
1dd41f16 NS |
4033 | reopen_exec_file (); |
4034 | reread_symbols (); | |
4035 | ||
9db8d71f | 4036 | remote_desc = remote_serial_open (name); |
c906108c SS |
4037 | if (!remote_desc) |
4038 | perror_with_name (name); | |
4039 | ||
4040 | if (baud_rate != -1) | |
4041 | { | |
2cd58942 | 4042 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4043 | { |
9b74d5d3 KB |
4044 | /* The requested speed could not be set. Error out to |
4045 | top level after closing remote_desc. Take care to | |
4046 | set remote_desc to NULL to avoid closing remote_desc | |
4047 | more than once. */ | |
2cd58942 | 4048 | serial_close (remote_desc); |
9b74d5d3 | 4049 | remote_desc = NULL; |
c906108c SS |
4050 | perror_with_name (name); |
4051 | } | |
4052 | } | |
4053 | ||
2cd58942 | 4054 | serial_raw (remote_desc); |
c906108c SS |
4055 | |
4056 | /* If there is something sitting in the buffer we might take it as a | |
4057 | response to a command, which would be bad. */ | |
2cd58942 | 4058 | serial_flush_input (remote_desc); |
c906108c SS |
4059 | |
4060 | if (from_tty) | |
4061 | { | |
4062 | puts_filtered ("Remote debugging using "); | |
4063 | puts_filtered (name); | |
4064 | puts_filtered ("\n"); | |
4065 | } | |
23860348 | 4066 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4067 | |
74531fed PA |
4068 | /* Register extra event sources in the event loop. */ |
4069 | remote_async_inferior_event_token | |
4070 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4071 | NULL); | |
4072 | remote_async_get_pending_events_token | |
4073 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4074 | NULL); | |
4075 | ||
be2a5f71 DJ |
4076 | /* Reset the target state; these things will be queried either by |
4077 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4078 | init_all_packet_configs (); |
74531fed | 4079 | rs->cached_wait_status = 0; |
be2a5f71 | 4080 | rs->explicit_packet_size = 0; |
a6f3e723 | 4081 | rs->noack_mode = 0; |
82f73884 PA |
4082 | rs->multi_process_aware = 0; |
4083 | rs->extended = extended_p; | |
74531fed | 4084 | rs->non_stop_aware = 0; |
e24a49d8 | 4085 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4086 | rs->ctrlc_pending_p = 0; |
802188a7 | 4087 | |
79d7f229 PA |
4088 | general_thread = not_sent_ptid; |
4089 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4090 | remote_traceframe_number = -1; |
c906108c | 4091 | |
9d1f7ab2 MS |
4092 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4093 | use_threadinfo_query = 1; | |
4094 | use_threadextra_query = 1; | |
4095 | ||
c6ebd6cf | 4096 | if (target_async_permitted) |
92d1e331 | 4097 | { |
23860348 | 4098 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4099 | remote_async_terminal_ours_p = 1; |
4100 | ||
4101 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4102 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4103 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4104 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4105 | around this. Eventually a mechanism that allows |
92d1e331 | 4106 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4107 | implemented. */ |
92d1e331 DJ |
4108 | wait_forever_enabled_p = 0; |
4109 | } | |
4110 | ||
23860348 | 4111 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4112 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4113 | |
74531fed PA |
4114 | /* Start afresh. */ |
4115 | init_thread_list (); | |
4116 | ||
36918e70 | 4117 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4118 | target (we'd otherwise be in an inconsistent state) and then |
4119 | propogate the error on up the exception chain. This ensures that | |
4120 | the caller doesn't stumble along blindly assuming that the | |
4121 | function succeeded. The CLI doesn't have this problem but other | |
4122 | UI's, such as MI do. | |
36918e70 AC |
4123 | |
4124 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4125 | this function should return an error indication letting the | |
ce2826aa | 4126 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4127 | ``target remote'' is directly wired to this function making that |
4128 | impossible. On a positive note, the CLI side of this problem has | |
4129 | been fixed - the function set_cmd_context() makes it possible for | |
4130 | all the ``target ....'' commands to share a common callback | |
4131 | function. See cli-dump.c. */ | |
109c3e39 | 4132 | { |
04bd08de | 4133 | volatile struct gdb_exception ex; |
2d717e4f | 4134 | |
04bd08de TT |
4135 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4136 | { | |
4137 | remote_start_remote (from_tty, target, extended_p); | |
4138 | } | |
109c3e39 AC |
4139 | if (ex.reason < 0) |
4140 | { | |
c8d104ad PA |
4141 | /* Pop the partially set up target - unless something else did |
4142 | already before throwing the exception. */ | |
4143 | if (remote_desc != NULL) | |
4144 | pop_target (); | |
c6ebd6cf | 4145 | if (target_async_permitted) |
109c3e39 AC |
4146 | wait_forever_enabled_p = 1; |
4147 | throw_exception (ex); | |
4148 | } | |
4149 | } | |
c906108c | 4150 | |
c6ebd6cf | 4151 | if (target_async_permitted) |
92d1e331 | 4152 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4153 | } |
4154 | ||
c906108c SS |
4155 | /* This takes a program previously attached to and detaches it. After |
4156 | this is done, GDB can be used to debug some other program. We | |
4157 | better not have left any breakpoints in the target program or it'll | |
4158 | die when it hits one. */ | |
4159 | ||
4160 | static void | |
2d717e4f | 4161 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4162 | { |
82f73884 | 4163 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4164 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4165 | |
4166 | if (args) | |
8a3fe4f8 | 4167 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4168 | |
2d717e4f DJ |
4169 | if (!target_has_execution) |
4170 | error (_("No process to detach from.")); | |
4171 | ||
c906108c | 4172 | /* Tell the remote target to detach. */ |
82f73884 PA |
4173 | if (remote_multi_process_p (rs)) |
4174 | sprintf (rs->buf, "D;%x", pid); | |
4175 | else | |
4176 | strcpy (rs->buf, "D"); | |
4177 | ||
4ddda9b5 PA |
4178 | putpkt (rs->buf); |
4179 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4180 | ||
82f73884 PA |
4181 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4182 | ; | |
4183 | else if (rs->buf[0] == '\0') | |
4184 | error (_("Remote doesn't know how to detach")); | |
4185 | else | |
4ddda9b5 | 4186 | error (_("Can't detach process.")); |
c906108c | 4187 | |
c906108c | 4188 | if (from_tty) |
2d717e4f | 4189 | { |
82f73884 PA |
4190 | if (remote_multi_process_p (rs)) |
4191 | printf_filtered (_("Detached from remote %s.\n"), | |
4192 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4193 | else |
82f73884 PA |
4194 | { |
4195 | if (extended) | |
4196 | puts_filtered (_("Detached from remote process.\n")); | |
4197 | else | |
4198 | puts_filtered (_("Ending remote debugging.\n")); | |
4199 | } | |
2d717e4f | 4200 | } |
82f73884 | 4201 | |
74531fed | 4202 | discard_pending_stop_replies (pid); |
82f73884 | 4203 | target_mourn_inferior (); |
2d717e4f DJ |
4204 | } |
4205 | ||
4206 | static void | |
136d6dae | 4207 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4208 | { |
4209 | remote_detach_1 (args, from_tty, 0); | |
4210 | } | |
4211 | ||
4212 | static void | |
136d6dae | 4213 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4214 | { |
4215 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4216 | } |
4217 | ||
6ad8ae5c DJ |
4218 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4219 | ||
43ff13b4 | 4220 | static void |
597320e7 | 4221 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4222 | { |
43ff13b4 | 4223 | if (args) |
2d717e4f | 4224 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4225 | |
2d717e4f DJ |
4226 | /* Make sure we unpush even the extended remote targets; mourn |
4227 | won't do it. So call remote_mourn_1 directly instead of | |
4228 | target_mourn_inferior. */ | |
4229 | remote_mourn_1 (target); | |
4230 | ||
43ff13b4 JM |
4231 | if (from_tty) |
4232 | puts_filtered ("Ending remote debugging.\n"); | |
4233 | } | |
4234 | ||
2d717e4f DJ |
4235 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4236 | be chatty about it. */ | |
4237 | ||
4238 | static void | |
4239 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4240 | { | |
4241 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4242 | int pid; |
96ef3384 | 4243 | char *wait_status = NULL; |
2d717e4f | 4244 | |
74164c56 | 4245 | pid = parse_pid_to_attach (args); |
2d717e4f | 4246 | |
74164c56 JK |
4247 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4248 | way as in other targets. */ | |
2d717e4f DJ |
4249 | |
4250 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4251 | error (_("This target does not support attaching to a process")); | |
4252 | ||
4253 | sprintf (rs->buf, "vAttach;%x", pid); | |
4254 | putpkt (rs->buf); | |
4255 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4256 | ||
3e43a32a MS |
4257 | if (packet_ok (rs->buf, |
4258 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f DJ |
4259 | { |
4260 | if (from_tty) | |
4261 | printf_unfiltered (_("Attached to %s\n"), | |
4262 | target_pid_to_str (pid_to_ptid (pid))); | |
4263 | ||
74531fed PA |
4264 | if (!non_stop) |
4265 | { | |
4266 | /* Save the reply for later. */ | |
4267 | wait_status = alloca (strlen (rs->buf) + 1); | |
4268 | strcpy (wait_status, rs->buf); | |
4269 | } | |
4270 | else if (strcmp (rs->buf, "OK") != 0) | |
4271 | error (_("Attaching to %s failed with: %s"), | |
4272 | target_pid_to_str (pid_to_ptid (pid)), | |
4273 | rs->buf); | |
2d717e4f DJ |
4274 | } |
4275 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4276 | error (_("This target does not support attaching to a process")); | |
4277 | else | |
4278 | error (_("Attaching to %s failed"), | |
4279 | target_pid_to_str (pid_to_ptid (pid))); | |
4280 | ||
6c95b8df | 4281 | set_current_inferior (remote_add_inferior (pid, 1)); |
bad34192 | 4282 | |
2d717e4f | 4283 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4284 | |
bad34192 PA |
4285 | if (non_stop) |
4286 | { | |
4287 | struct thread_info *thread; | |
79d7f229 | 4288 | |
bad34192 PA |
4289 | /* Get list of threads. */ |
4290 | remote_threads_info (target); | |
82f73884 | 4291 | |
bad34192 PA |
4292 | thread = first_thread_of_process (pid); |
4293 | if (thread) | |
4294 | inferior_ptid = thread->ptid; | |
4295 | else | |
4296 | inferior_ptid = pid_to_ptid (pid); | |
4297 | ||
4298 | /* Invalidate our notion of the remote current thread. */ | |
4299 | record_currthread (minus_one_ptid); | |
4300 | } | |
74531fed | 4301 | else |
bad34192 PA |
4302 | { |
4303 | /* Now, if we have thread information, update inferior_ptid. */ | |
4304 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4305 | ||
4306 | /* Add the main thread to the thread list. */ | |
4307 | add_thread_silent (inferior_ptid); | |
4308 | } | |
c0a2216e | 4309 | |
96ef3384 UW |
4310 | /* Next, if the target can specify a description, read it. We do |
4311 | this before anything involving memory or registers. */ | |
4312 | target_find_description (); | |
4313 | ||
74531fed PA |
4314 | if (!non_stop) |
4315 | { | |
4316 | /* Use the previously fetched status. */ | |
4317 | gdb_assert (wait_status != NULL); | |
4318 | ||
4319 | if (target_can_async_p ()) | |
4320 | { | |
4321 | struct stop_reply *stop_reply; | |
4322 | struct cleanup *old_chain; | |
4323 | ||
4324 | stop_reply = stop_reply_xmalloc (); | |
4325 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4326 | remote_parse_stop_reply (wait_status, stop_reply); | |
4327 | discard_cleanups (old_chain); | |
4328 | push_stop_reply (stop_reply); | |
4329 | ||
4330 | target_async (inferior_event_handler, 0); | |
4331 | } | |
4332 | else | |
4333 | { | |
4334 | gdb_assert (wait_status != NULL); | |
4335 | strcpy (rs->buf, wait_status); | |
4336 | rs->cached_wait_status = 1; | |
4337 | } | |
4338 | } | |
4339 | else | |
4340 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4341 | } |
4342 | ||
4343 | static void | |
136d6dae | 4344 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4345 | { |
136d6dae | 4346 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4347 | } |
4348 | ||
c906108c SS |
4349 | /* Convert hex digit A to a number. */ |
4350 | ||
30559e10 | 4351 | static int |
fba45db2 | 4352 | fromhex (int a) |
c906108c SS |
4353 | { |
4354 | if (a >= '0' && a <= '9') | |
4355 | return a - '0'; | |
4356 | else if (a >= 'a' && a <= 'f') | |
4357 | return a - 'a' + 10; | |
4358 | else if (a >= 'A' && a <= 'F') | |
4359 | return a - 'A' + 10; | |
c5aa993b | 4360 | else |
8a3fe4f8 | 4361 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4362 | } |
4363 | ||
00bf0b85 | 4364 | int |
cfd77fa1 | 4365 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4366 | { |
4367 | int i; | |
4368 | ||
30559e10 MS |
4369 | for (i = 0; i < count; i++) |
4370 | { | |
4371 | if (hex[0] == 0 || hex[1] == 0) | |
4372 | { | |
4373 | /* Hex string is short, or of uneven length. | |
23860348 | 4374 | Return the count that has been converted so far. */ |
30559e10 MS |
4375 | return i; |
4376 | } | |
4377 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4378 | hex += 2; | |
4379 | } | |
4380 | return i; | |
4381 | } | |
4382 | ||
c906108c SS |
4383 | /* Convert number NIB to a hex digit. */ |
4384 | ||
4385 | static int | |
fba45db2 | 4386 | tohex (int nib) |
c906108c SS |
4387 | { |
4388 | if (nib < 10) | |
c5aa993b | 4389 | return '0' + nib; |
c906108c | 4390 | else |
c5aa993b | 4391 | return 'a' + nib - 10; |
c906108c | 4392 | } |
30559e10 | 4393 | |
00bf0b85 | 4394 | int |
cfd77fa1 | 4395 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4396 | { |
4397 | int i; | |
a744cf53 | 4398 | |
23860348 | 4399 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4400 | if (count == 0) |
cfd77fa1 | 4401 | count = strlen ((char *) bin); |
30559e10 MS |
4402 | |
4403 | for (i = 0; i < count; i++) | |
4404 | { | |
4405 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4406 | *hex++ = tohex (*bin++ & 0xf); | |
4407 | } | |
4408 | *hex = 0; | |
4409 | return i; | |
4410 | } | |
c906108c | 4411 | \f |
506fb367 DJ |
4412 | /* Check for the availability of vCont. This function should also check |
4413 | the response. */ | |
c906108c SS |
4414 | |
4415 | static void | |
6d820c5c | 4416 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4417 | { |
2e9f7625 | 4418 | char *buf; |
6d820c5c | 4419 | |
2e9f7625 DJ |
4420 | strcpy (rs->buf, "vCont?"); |
4421 | putpkt (rs->buf); | |
6d820c5c | 4422 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4423 | buf = rs->buf; |
c906108c | 4424 | |
506fb367 DJ |
4425 | /* Make sure that the features we assume are supported. */ |
4426 | if (strncmp (buf, "vCont", 5) == 0) | |
4427 | { | |
4428 | char *p = &buf[5]; | |
4429 | int support_s, support_S, support_c, support_C; | |
4430 | ||
4431 | support_s = 0; | |
4432 | support_S = 0; | |
4433 | support_c = 0; | |
4434 | support_C = 0; | |
74531fed | 4435 | rs->support_vCont_t = 0; |
506fb367 DJ |
4436 | while (p && *p == ';') |
4437 | { | |
4438 | p++; | |
4439 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4440 | support_s = 1; | |
4441 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4442 | support_S = 1; | |
4443 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4444 | support_c = 1; | |
4445 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4446 | support_C = 1; | |
74531fed PA |
4447 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4448 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4449 | |
4450 | p = strchr (p, ';'); | |
4451 | } | |
c906108c | 4452 | |
506fb367 DJ |
4453 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4454 | BUF will make packet_ok disable the packet. */ | |
4455 | if (!support_s || !support_S || !support_c || !support_C) | |
4456 | buf[0] = 0; | |
4457 | } | |
c906108c | 4458 | |
444abaca | 4459 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4460 | } |
c906108c | 4461 | |
0d8f58ca PA |
4462 | /* Helper function for building "vCont" resumptions. Write a |
4463 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4464 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4465 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4466 | resumed thread should be single-stepped and/or signalled. If PTID | |
4467 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4468 | represents a process, then all threads of the process are resumed; | |
4469 | the thread to be stepped and/or signalled is given in the global | |
4470 | INFERIOR_PTID. */ | |
4471 | ||
4472 | static char * | |
4473 | append_resumption (char *p, char *endp, | |
4474 | ptid_t ptid, int step, enum target_signal siggnal) | |
4475 | { | |
4476 | struct remote_state *rs = get_remote_state (); | |
4477 | ||
4478 | if (step && siggnal != TARGET_SIGNAL_0) | |
4479 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4480 | else if (step) | |
4481 | p += xsnprintf (p, endp - p, ";s"); | |
4482 | else if (siggnal != TARGET_SIGNAL_0) | |
4483 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4484 | else | |
4485 | p += xsnprintf (p, endp - p, ";c"); | |
4486 | ||
4487 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4488 | { | |
4489 | ptid_t nptid; | |
4490 | ||
4491 | /* All (-1) threads of process. */ | |
4492 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4493 | ||
4494 | p += xsnprintf (p, endp - p, ":"); | |
4495 | p = write_ptid (p, endp, nptid); | |
4496 | } | |
4497 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4498 | { | |
4499 | p += xsnprintf (p, endp - p, ":"); | |
4500 | p = write_ptid (p, endp, ptid); | |
4501 | } | |
4502 | ||
4503 | return p; | |
4504 | } | |
4505 | ||
506fb367 DJ |
4506 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4507 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4508 | resumed thread should be single-stepped and/or signalled. If PTID |
4509 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4510 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4511 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4512 | |
506fb367 DJ |
4513 | This function issues a strict subset of all possible vCont commands at the |
4514 | moment. */ | |
44eaed12 | 4515 | |
506fb367 DJ |
4516 | static int |
4517 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4518 | { | |
4519 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4520 | char *p; |
4521 | char *endp; | |
44eaed12 | 4522 | |
444abaca | 4523 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4524 | remote_vcont_probe (rs); |
44eaed12 | 4525 | |
444abaca | 4526 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4527 | return 0; |
44eaed12 | 4528 | |
82f73884 PA |
4529 | p = rs->buf; |
4530 | endp = rs->buf + get_remote_packet_size (); | |
4531 | ||
506fb367 DJ |
4532 | /* If we could generate a wider range of packets, we'd have to worry |
4533 | about overflowing BUF. Should there be a generic | |
4534 | "multi-part-packet" packet? */ | |
4535 | ||
0d8f58ca PA |
4536 | p += xsnprintf (p, endp - p, "vCont"); |
4537 | ||
79d7f229 | 4538 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4539 | { |
79d7f229 PA |
4540 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4541 | so we don't have any TID numbers the inferior will | |
4542 | understand. Make sure to only send forms that do not specify | |
4543 | a TID. */ | |
a9cbf802 | 4544 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4545 | } |
0d8f58ca | 4546 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4547 | { |
0d8f58ca PA |
4548 | /* Resume all threads (of all processes, or of a single |
4549 | process), with preference for INFERIOR_PTID. This assumes | |
4550 | inferior_ptid belongs to the set of all threads we are about | |
4551 | to resume. */ | |
4552 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4553 | { |
0d8f58ca PA |
4554 | /* Step inferior_ptid, with or without signal. */ |
4555 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4556 | } |
0d8f58ca PA |
4557 | |
4558 | /* And continue others without a signal. */ | |
a9cbf802 | 4559 | append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); |
c906108c SS |
4560 | } |
4561 | else | |
506fb367 DJ |
4562 | { |
4563 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4564 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4565 | } |
c906108c | 4566 | |
82f73884 PA |
4567 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4568 | putpkt (rs->buf); | |
506fb367 | 4569 | |
74531fed PA |
4570 | if (non_stop) |
4571 | { | |
4572 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4573 | reply will be reported asynchronously by means of a `%Stop' | |
4574 | notification. */ | |
4575 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4576 | if (strcmp (rs->buf, "OK") != 0) | |
4577 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4578 | } | |
4579 | ||
506fb367 | 4580 | return 1; |
c906108c | 4581 | } |
43ff13b4 | 4582 | |
506fb367 DJ |
4583 | /* Tell the remote machine to resume. */ |
4584 | ||
4585 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4586 | ||
4587 | static int last_sent_step; | |
4588 | ||
43ff13b4 | 4589 | static void |
28439f5e PA |
4590 | remote_resume (struct target_ops *ops, |
4591 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4592 | { |
d01949b6 | 4593 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4594 | char *buf; |
43ff13b4 | 4595 | |
43ff13b4 JM |
4596 | last_sent_signal = siggnal; |
4597 | last_sent_step = step; | |
4598 | ||
506fb367 | 4599 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4600 | /* No reverse support (yet) for vCont. */ |
4601 | if (execution_direction != EXEC_REVERSE) | |
4602 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4603 | goto done; | |
506fb367 | 4604 | |
79d7f229 PA |
4605 | /* All other supported resume packets do use Hc, so set the continue |
4606 | thread. */ | |
4607 | if (ptid_equal (ptid, minus_one_ptid)) | |
4608 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4609 | else |
79d7f229 | 4610 | set_continue_thread (ptid); |
506fb367 | 4611 | |
2e9f7625 | 4612 | buf = rs->buf; |
b2175913 MS |
4613 | if (execution_direction == EXEC_REVERSE) |
4614 | { | |
4615 | /* We don't pass signals to the target in reverse exec mode. */ | |
4616 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
7ea6d463 | 4617 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4618 | siggnal); |
40ab02ce MS |
4619 | |
4620 | if (step | |
4621 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4622 | error (_("Remote reverse-step not supported.")); | |
4623 | if (!step | |
4624 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4625 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4626 | |
b2175913 MS |
4627 | strcpy (buf, step ? "bs" : "bc"); |
4628 | } | |
4629 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4630 | { |
4631 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4632 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4633 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4634 | buf[3] = '\0'; |
4635 | } | |
4636 | else | |
c5aa993b | 4637 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4638 | |
44eaed12 | 4639 | putpkt (buf); |
43ff13b4 | 4640 | |
75c99385 | 4641 | done: |
2acceee2 | 4642 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4643 | with the event loop. NOTE: this is the one place where all the |
4644 | execution commands end up. We could alternatively do this in each | |
23860348 | 4645 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4646 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4647 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4648 | NOT asynchronously. */ |
362646f5 | 4649 | if (target_can_async_p ()) |
2acceee2 | 4650 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4651 | |
4652 | /* We've just told the target to resume. The remote server will | |
4653 | wait for the inferior to stop, and then send a stop reply. In | |
4654 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4655 | because the stub wouldn't be ready to process it. This applies |
4656 | only to the base all-stop protocol, however. In non-stop (which | |
4657 | only supports vCont), the stub replies with an "OK", and is | |
4658 | immediate able to process further serial input. */ | |
4659 | if (!non_stop) | |
4660 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4661 | } |
c906108c | 4662 | \f |
43ff13b4 JM |
4663 | |
4664 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4665 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4666 | static void |
fba45db2 | 4667 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4668 | { |
43ff13b4 JM |
4669 | signal (SIGINT, handle_remote_sigint); |
4670 | } | |
4671 | ||
23860348 | 4672 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4673 | static void |
fba45db2 | 4674 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4675 | { |
4676 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4677 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4678 | } | |
4679 | ||
4680 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4681 | sent once. It will take effect the second time that the user sends | |
23860348 | 4682 | a ^C. */ |
43ff13b4 | 4683 | static void |
fba45db2 | 4684 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4685 | { |
b803fb0f | 4686 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4687 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4688 | } | |
4689 | ||
6426a772 | 4690 | /* Perform the real interruption of the target execution, in response |
23860348 | 4691 | to a ^C. */ |
c5aa993b | 4692 | static void |
fba45db2 | 4693 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4694 | { |
4695 | if (remote_debug) | |
4696 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4697 | ||
94cc34af | 4698 | target_stop (inferior_ptid); |
43ff13b4 JM |
4699 | } |
4700 | ||
0df8b418 | 4701 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4702 | up on the target alltogether. */ |
2df3850c | 4703 | void |
fba45db2 | 4704 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4705 | { |
2df3850c JM |
4706 | if (remote_debug) |
4707 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4708 | |
4709 | interrupt_query (); | |
43ff13b4 JM |
4710 | } |
4711 | ||
4712 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4713 | stopped. */ |
6426a772 JM |
4714 | static void |
4715 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4716 | { |
4717 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4718 | } |
4719 | ||
c906108c SS |
4720 | /* Send ^C to target to halt it. Target will respond, and send us a |
4721 | packet. */ | |
507f3c78 | 4722 | static void (*ofunc) (int); |
c906108c | 4723 | |
0df8b418 MS |
4724 | /* The command line interface's stop routine. This function is installed |
4725 | as a signal handler for SIGINT. The first time a user requests a | |
4726 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4727 | response from the target (it didn't stop when the user requested it), |
23860348 | 4728 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4729 | static void |
fba45db2 | 4730 | remote_interrupt (int signo) |
c906108c | 4731 | { |
23860348 | 4732 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4733 | signal (signo, remote_interrupt_twice); |
4734 | ||
b803fb0f | 4735 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4736 | } |
4737 | ||
4738 | /* The user typed ^C twice. */ | |
4739 | ||
4740 | static void | |
fba45db2 | 4741 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4742 | { |
4743 | signal (signo, ofunc); | |
b803fb0f | 4744 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4745 | signal (signo, remote_interrupt); |
4746 | } | |
7a292a7a | 4747 | |
74531fed PA |
4748 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4749 | thread, all threads of a remote process, or all threads of all | |
4750 | processes. */ | |
4751 | ||
4752 | static void | |
4753 | remote_stop_ns (ptid_t ptid) | |
4754 | { | |
4755 | struct remote_state *rs = get_remote_state (); | |
4756 | char *p = rs->buf; | |
4757 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4758 | |
4759 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4760 | remote_vcont_probe (rs); | |
4761 | ||
4762 | if (!rs->support_vCont_t) | |
4763 | error (_("Remote server does not support stopping threads")); | |
4764 | ||
f91d3df5 PA |
4765 | if (ptid_equal (ptid, minus_one_ptid) |
4766 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4767 | p += xsnprintf (p, endp - p, "vCont;t"); |
4768 | else | |
4769 | { | |
4770 | ptid_t nptid; | |
4771 | ||
74531fed PA |
4772 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4773 | ||
4774 | if (ptid_is_pid (ptid)) | |
4775 | /* All (-1) threads of process. */ | |
4776 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4777 | else | |
4778 | { | |
4779 | /* Small optimization: if we already have a stop reply for | |
4780 | this thread, no use in telling the stub we want this | |
4781 | stopped. */ | |
4782 | if (peek_stop_reply (ptid)) | |
4783 | return; | |
4784 | ||
4785 | nptid = ptid; | |
4786 | } | |
4787 | ||
a9cbf802 | 4788 | write_ptid (p, endp, nptid); |
74531fed PA |
4789 | } |
4790 | ||
4791 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4792 | come in asynchronously by notification. */ | |
4793 | putpkt (rs->buf); | |
4794 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4795 | if (strcmp (rs->buf, "OK") != 0) | |
4796 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4797 | } | |
4798 | ||
4799 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4800 | remote target. It is undefined which thread of which process | |
4801 | reports the stop. */ | |
4802 | ||
4803 | static void | |
4804 | remote_stop_as (ptid_t ptid) | |
4805 | { | |
4806 | struct remote_state *rs = get_remote_state (); | |
4807 | ||
3a29589a DJ |
4808 | rs->ctrlc_pending_p = 1; |
4809 | ||
74531fed PA |
4810 | /* If the inferior is stopped already, but the core didn't know |
4811 | about it yet, just ignore the request. The cached wait status | |
4812 | will be collected in remote_wait. */ | |
4813 | if (rs->cached_wait_status) | |
4814 | return; | |
4815 | ||
9a7071a8 JB |
4816 | /* Send interrupt_sequence to remote target. */ |
4817 | send_interrupt_sequence (); | |
74531fed PA |
4818 | } |
4819 | ||
0df8b418 | 4820 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4821 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4822 | will eventually end up here. */ |
74531fed | 4823 | |
c906108c | 4824 | static void |
94cc34af | 4825 | remote_stop (ptid_t ptid) |
c906108c | 4826 | { |
7a292a7a | 4827 | if (remote_debug) |
0f71a2f6 | 4828 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4829 | |
74531fed PA |
4830 | if (non_stop) |
4831 | remote_stop_ns (ptid); | |
c906108c | 4832 | else |
74531fed | 4833 | remote_stop_as (ptid); |
c906108c SS |
4834 | } |
4835 | ||
4836 | /* Ask the user what to do when an interrupt is received. */ | |
4837 | ||
4838 | static void | |
fba45db2 | 4839 | interrupt_query (void) |
c906108c SS |
4840 | { |
4841 | target_terminal_ours (); | |
4842 | ||
74531fed | 4843 | if (target_can_async_p ()) |
c906108c | 4844 | { |
74531fed | 4845 | signal (SIGINT, handle_sigint); |
315a522e | 4846 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4847 | } |
74531fed PA |
4848 | else |
4849 | { | |
9e2f0ad4 HZ |
4850 | if (query (_("Interrupted while waiting for the program.\n\ |
4851 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4852 | { |
4853 | pop_target (); | |
4854 | deprecated_throw_reason (RETURN_QUIT); | |
4855 | } | |
4856 | } | |
c906108c SS |
4857 | |
4858 | target_terminal_inferior (); | |
4859 | } | |
4860 | ||
6426a772 JM |
4861 | /* Enable/disable target terminal ownership. Most targets can use |
4862 | terminal groups to control terminal ownership. Remote targets are | |
4863 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4864 | is required. */ |
6426a772 JM |
4865 | |
4866 | static void | |
75c99385 | 4867 | remote_terminal_inferior (void) |
6426a772 | 4868 | { |
c6ebd6cf | 4869 | if (!target_async_permitted) |
75c99385 PA |
4870 | /* Nothing to do. */ |
4871 | return; | |
4872 | ||
d9d2d8b6 PA |
4873 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4874 | idempotent. The event-loop GDB talking to an asynchronous target | |
4875 | with a synchronous command calls this function from both | |
4876 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4877 | transfer the terminal to the target when it shouldn't this guard | |
4878 | can go away. */ | |
6426a772 JM |
4879 | if (!remote_async_terminal_ours_p) |
4880 | return; | |
4881 | delete_file_handler (input_fd); | |
4882 | remote_async_terminal_ours_p = 0; | |
4883 | initialize_sigint_signal_handler (); | |
4884 | /* NOTE: At this point we could also register our selves as the | |
4885 | recipient of all input. Any characters typed could then be | |
23860348 | 4886 | passed on down to the target. */ |
6426a772 JM |
4887 | } |
4888 | ||
4889 | static void | |
75c99385 | 4890 | remote_terminal_ours (void) |
6426a772 | 4891 | { |
c6ebd6cf | 4892 | if (!target_async_permitted) |
75c99385 PA |
4893 | /* Nothing to do. */ |
4894 | return; | |
4895 | ||
4896 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4897 | if (remote_async_terminal_ours_p) |
4898 | return; | |
4899 | cleanup_sigint_signal_handler (NULL); | |
4900 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4901 | remote_async_terminal_ours_p = 1; | |
4902 | } | |
4903 | ||
176a6961 | 4904 | static void |
917317f4 | 4905 | remote_console_output (char *msg) |
c906108c SS |
4906 | { |
4907 | char *p; | |
4908 | ||
c5aa993b | 4909 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4910 | { |
4911 | char tb[2]; | |
4912 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4913 | |
c906108c SS |
4914 | tb[0] = c; |
4915 | tb[1] = 0; | |
43ff13b4 | 4916 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4917 | } |
00db5b94 PA |
4918 | gdb_flush (gdb_stdtarg); |
4919 | } | |
74531fed PA |
4920 | |
4921 | typedef struct cached_reg | |
4922 | { | |
4923 | int num; | |
4924 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4925 | } cached_reg_t; | |
4926 | ||
4927 | DEF_VEC_O(cached_reg_t); | |
4928 | ||
4929 | struct stop_reply | |
4930 | { | |
4931 | struct stop_reply *next; | |
4932 | ||
4933 | ptid_t ptid; | |
4934 | ||
4935 | struct target_waitstatus ws; | |
4936 | ||
15148d6a PA |
4937 | /* Expedited registers. This makes remote debugging a bit more |
4938 | efficient for those targets that provide critical registers as | |
4939 | part of their normal status mechanism (as another roundtrip to | |
4940 | fetch them is avoided). */ | |
74531fed PA |
4941 | VEC(cached_reg_t) *regcache; |
4942 | ||
4943 | int stopped_by_watchpoint_p; | |
4944 | CORE_ADDR watch_data_address; | |
4945 | ||
4946 | int solibs_changed; | |
4947 | int replay_event; | |
dc146f7c VP |
4948 | |
4949 | int core; | |
74531fed PA |
4950 | }; |
4951 | ||
4952 | /* The list of already fetched and acknowledged stop events. */ | |
4953 | static struct stop_reply *stop_reply_queue; | |
4954 | ||
4955 | static struct stop_reply * | |
4956 | stop_reply_xmalloc (void) | |
4957 | { | |
4958 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 4959 | |
74531fed PA |
4960 | r->next = NULL; |
4961 | return r; | |
4962 | } | |
4963 | ||
4964 | static void | |
4965 | stop_reply_xfree (struct stop_reply *r) | |
4966 | { | |
4967 | if (r != NULL) | |
4968 | { | |
4969 | VEC_free (cached_reg_t, r->regcache); | |
4970 | xfree (r); | |
4971 | } | |
c906108c SS |
4972 | } |
4973 | ||
74531fed PA |
4974 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
4975 | discard everything. */ | |
c906108c | 4976 | |
74531fed PA |
4977 | static void |
4978 | discard_pending_stop_replies (int pid) | |
c906108c | 4979 | { |
74531fed | 4980 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 4981 | |
74531fed PA |
4982 | /* Discard the in-flight notification. */ |
4983 | if (pending_stop_reply != NULL | |
4984 | && (pid == -1 | |
4985 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
4986 | { | |
4987 | stop_reply_xfree (pending_stop_reply); | |
4988 | pending_stop_reply = NULL; | |
4989 | } | |
c906108c | 4990 | |
74531fed PA |
4991 | /* Discard the stop replies we have already pulled with |
4992 | vStopped. */ | |
4993 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 4994 | { |
74531fed PA |
4995 | next = reply->next; |
4996 | if (pid == -1 | |
4997 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 4998 | { |
74531fed PA |
4999 | if (reply == stop_reply_queue) |
5000 | stop_reply_queue = reply->next; | |
5001 | else | |
5002 | prev->next = reply->next; | |
5003 | ||
5004 | stop_reply_xfree (reply); | |
9fa2223d | 5005 | } |
74531fed PA |
5006 | else |
5007 | prev = reply; | |
c8e38a49 | 5008 | } |
74531fed | 5009 | } |
43ff13b4 | 5010 | |
74531fed | 5011 | /* Cleanup wrapper. */ |
2e9f7625 | 5012 | |
74531fed PA |
5013 | static void |
5014 | do_stop_reply_xfree (void *arg) | |
5015 | { | |
5016 | struct stop_reply *r = arg; | |
a744cf53 | 5017 | |
74531fed PA |
5018 | stop_reply_xfree (r); |
5019 | } | |
75c99385 | 5020 | |
74531fed PA |
5021 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5022 | remove it from the queue, and return it. Returns NULL if none is | |
5023 | found. If there are still queued events left to process, tell the | |
5024 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5025 | |
74531fed PA |
5026 | static struct stop_reply * |
5027 | queued_stop_reply (ptid_t ptid) | |
5028 | { | |
0723dbf5 PA |
5029 | struct stop_reply *it; |
5030 | struct stop_reply **it_link; | |
74531fed | 5031 | |
0723dbf5 PA |
5032 | it = stop_reply_queue; |
5033 | it_link = &stop_reply_queue; | |
5034 | while (it) | |
c8e38a49 | 5035 | { |
0723dbf5 PA |
5036 | if (ptid_match (it->ptid, ptid)) |
5037 | { | |
5038 | *it_link = it->next; | |
5039 | it->next = NULL; | |
5040 | break; | |
5041 | } | |
e24a49d8 | 5042 | |
0723dbf5 PA |
5043 | it_link = &it->next; |
5044 | it = *it_link; | |
5045 | } | |
74531fed PA |
5046 | |
5047 | if (stop_reply_queue) | |
5048 | /* There's still at least an event left. */ | |
5049 | mark_async_event_handler (remote_async_inferior_event_token); | |
5050 | ||
5051 | return it; | |
5052 | } | |
5053 | ||
5054 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5055 | know that we now have at least one queued event left to pass to the | |
5056 | core side, tell the event loop to get back to target_wait soon. */ | |
5057 | ||
5058 | static void | |
5059 | push_stop_reply (struct stop_reply *new_event) | |
5060 | { | |
5061 | struct stop_reply *event; | |
5062 | ||
5063 | if (stop_reply_queue) | |
5064 | { | |
5065 | for (event = stop_reply_queue; | |
5066 | event && event->next; | |
5067 | event = event->next) | |
5068 | ; | |
5069 | ||
5070 | event->next = new_event; | |
5071 | } | |
5072 | else | |
5073 | stop_reply_queue = new_event; | |
5074 | ||
5075 | mark_async_event_handler (remote_async_inferior_event_token); | |
5076 | } | |
5077 | ||
5078 | /* Returns true if we have a stop reply for PTID. */ | |
5079 | ||
5080 | static int | |
5081 | peek_stop_reply (ptid_t ptid) | |
5082 | { | |
5083 | struct stop_reply *it; | |
5084 | ||
5085 | for (it = stop_reply_queue; it; it = it->next) | |
5086 | if (ptid_equal (ptid, it->ptid)) | |
5087 | { | |
5088 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5089 | return 1; | |
5090 | } | |
5091 | ||
5092 | return 0; | |
5093 | } | |
5094 | ||
5095 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5096 | result is stored in EVENT, or throws an error. */ | |
5097 | ||
5098 | static void | |
5099 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5100 | { | |
5101 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5102 | ULONGEST addr; | |
5103 | char *p; | |
5104 | ||
5105 | event->ptid = null_ptid; | |
5106 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5107 | event->ws.value.integer = 0; | |
5108 | event->solibs_changed = 0; | |
5109 | event->replay_event = 0; | |
5110 | event->stopped_by_watchpoint_p = 0; | |
5111 | event->regcache = NULL; | |
dc146f7c | 5112 | event->core = -1; |
74531fed PA |
5113 | |
5114 | switch (buf[0]) | |
5115 | { | |
5116 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5117 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5118 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5119 | ss = signal number | |
5120 | n... = register number | |
5121 | r... = register contents | |
5122 | */ | |
5123 | ||
5124 | p = &buf[3]; /* after Txx */ | |
5125 | while (*p) | |
5126 | { | |
5127 | char *p1; | |
5128 | char *p_temp; | |
5129 | int fieldsize; | |
5130 | LONGEST pnum = 0; | |
43ff13b4 | 5131 | |
cea39f65 MS |
5132 | /* If the packet contains a register number, save it in |
5133 | pnum and set p1 to point to the character following it. | |
5134 | Otherwise p1 points to p. */ | |
3c3bea1c | 5135 | |
cea39f65 MS |
5136 | /* If this packet is an awatch packet, don't parse the 'a' |
5137 | as a register number. */ | |
c8e38a49 | 5138 | |
dc146f7c VP |
5139 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5140 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5141 | { |
5142 | /* Read the ``P'' register number. */ | |
5143 | pnum = strtol (p, &p_temp, 16); | |
5144 | p1 = p_temp; | |
5145 | } | |
5146 | else | |
5147 | p1 = p; | |
802188a7 | 5148 | |
cea39f65 MS |
5149 | if (p1 == p) /* No register number present here. */ |
5150 | { | |
5151 | p1 = strchr (p, ':'); | |
5152 | if (p1 == NULL) | |
5153 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5154 | Packet: '%s'\n"), |
cea39f65 MS |
5155 | p, buf); |
5156 | if (strncmp (p, "thread", p1 - p) == 0) | |
5157 | event->ptid = read_ptid (++p1, &p); | |
5158 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5159 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5160 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5161 | { | |
5162 | event->stopped_by_watchpoint_p = 1; | |
5163 | p = unpack_varlen_hex (++p1, &addr); | |
5164 | event->watch_data_address = (CORE_ADDR) addr; | |
5165 | } | |
5166 | else if (strncmp (p, "library", p1 - p) == 0) | |
5167 | { | |
5168 | p1++; | |
5169 | p_temp = p1; | |
5170 | while (*p_temp && *p_temp != ';') | |
5171 | p_temp++; | |
c8e38a49 | 5172 | |
cea39f65 MS |
5173 | event->solibs_changed = 1; |
5174 | p = p_temp; | |
5175 | } | |
5176 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5177 | { | |
5178 | /* NO_HISTORY event. | |
5179 | p1 will indicate "begin" or "end", but | |
5180 | it makes no difference for now, so ignore it. */ | |
5181 | event->replay_event = 1; | |
5182 | p_temp = strchr (p1 + 1, ';'); | |
5183 | if (p_temp) | |
c8e38a49 | 5184 | p = p_temp; |
cea39f65 | 5185 | } |
dc146f7c VP |
5186 | else if (strncmp (p, "core", p1 - p) == 0) |
5187 | { | |
5188 | ULONGEST c; | |
a744cf53 | 5189 | |
dc146f7c VP |
5190 | p = unpack_varlen_hex (++p1, &c); |
5191 | event->core = c; | |
5192 | } | |
cea39f65 MS |
5193 | else |
5194 | { | |
5195 | /* Silently skip unknown optional info. */ | |
5196 | p_temp = strchr (p1 + 1, ';'); | |
5197 | if (p_temp) | |
5198 | p = p_temp; | |
5199 | } | |
5200 | } | |
5201 | else | |
5202 | { | |
5203 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5204 | cached_reg_t cached_reg; | |
74531fed | 5205 | |
cea39f65 | 5206 | p = p1; |
75c99385 | 5207 | |
cea39f65 MS |
5208 | if (*p != ':') |
5209 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5210 | Packet: '%s'\n"), |
cea39f65 MS |
5211 | p, buf); |
5212 | ++p; | |
43ff13b4 | 5213 | |
cea39f65 MS |
5214 | if (reg == NULL) |
5215 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5216 | Packet: '%s'\n"), |
7c47795c | 5217 | hex_string (pnum), p, buf); |
c8e38a49 | 5218 | |
cea39f65 | 5219 | cached_reg.num = reg->regnum; |
4100683b | 5220 | |
cea39f65 MS |
5221 | fieldsize = hex2bin (p, cached_reg.data, |
5222 | register_size (target_gdbarch, | |
5223 | reg->regnum)); | |
5224 | p += 2 * fieldsize; | |
5225 | if (fieldsize < register_size (target_gdbarch, | |
5226 | reg->regnum)) | |
5227 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5228 | |
cea39f65 MS |
5229 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5230 | } | |
c8e38a49 | 5231 | |
cea39f65 MS |
5232 | if (*p != ';') |
5233 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5234 | buf, p); | |
5235 | ++p; | |
5236 | } | |
c8e38a49 PA |
5237 | /* fall through */ |
5238 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5239 | if (event->solibs_changed) |
5240 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5241 | else if (event->replay_event) | |
5242 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5243 | else |
5244 | { | |
74531fed PA |
5245 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5246 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5247 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5248 | } | |
5249 | break; | |
5250 | case 'W': /* Target exited. */ | |
5251 | case 'X': | |
5252 | { | |
5253 | char *p; | |
5254 | int pid; | |
5255 | ULONGEST value; | |
82f73884 | 5256 | |
c8e38a49 PA |
5257 | /* GDB used to accept only 2 hex chars here. Stubs should |
5258 | only send more if they detect GDB supports multi-process | |
5259 | support. */ | |
5260 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5261 | |
c8e38a49 PA |
5262 | if (buf[0] == 'W') |
5263 | { | |
5264 | /* The remote process exited. */ | |
74531fed PA |
5265 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5266 | event->ws.value.integer = value; | |
c8e38a49 PA |
5267 | } |
5268 | else | |
5269 | { | |
5270 | /* The remote process exited with a signal. */ | |
74531fed PA |
5271 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5272 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5273 | } |
82f73884 | 5274 | |
c8e38a49 PA |
5275 | /* If no process is specified, assume inferior_ptid. */ |
5276 | pid = ptid_get_pid (inferior_ptid); | |
5277 | if (*p == '\0') | |
5278 | ; | |
5279 | else if (*p == ';') | |
5280 | { | |
5281 | p++; | |
5282 | ||
5283 | if (p == '\0') | |
82f73884 | 5284 | ; |
c8e38a49 PA |
5285 | else if (strncmp (p, |
5286 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5287 | { |
c8e38a49 | 5288 | ULONGEST upid; |
a744cf53 | 5289 | |
c8e38a49 PA |
5290 | p += sizeof ("process:") - 1; |
5291 | unpack_varlen_hex (p, &upid); | |
5292 | pid = upid; | |
82f73884 PA |
5293 | } |
5294 | else | |
5295 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5296 | } |
c8e38a49 PA |
5297 | else |
5298 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5299 | event->ptid = pid_to_ptid (pid); |
5300 | } | |
5301 | break; | |
5302 | } | |
5303 | ||
5304 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5305 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5306 | } | |
5307 | ||
5308 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5309 | stop notification (%Stop). Those can come it at any time, hence, | |
5310 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5311 | making is finished, before querying the stub for more events with | |
5312 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5313 | upon receiving the %Stop notification, something like this could | |
5314 | happen: | |
5315 | ||
5316 | 1.1) --> Hg 1 | |
5317 | 1.2) <-- OK | |
5318 | 1.3) --> g | |
5319 | 1.4) <-- %Stop | |
5320 | 1.5) --> vStopped | |
5321 | 1.6) <-- (registers reply to step #1.3) | |
5322 | ||
5323 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5324 | query. | |
5325 | ||
5326 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5327 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5328 | doing whatever we were doing: | |
5329 | ||
5330 | 2.1) --> Hg 1 | |
5331 | 2.2) <-- OK | |
5332 | 2.3) --> g | |
5333 | 2.4) <-- %Stop | |
5334 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5335 | 2.5) <-- (registers reply to step #2.3) | |
5336 | ||
5337 | Eventualy after step #2.5, we return to the event loop, which | |
5338 | notices there's an event on the | |
5339 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5340 | associated callback --- the function below. At this point, we're | |
5341 | always safe to start a vStopped sequence. : | |
5342 | ||
5343 | 2.6) --> vStopped | |
5344 | 2.7) <-- T05 thread:2 | |
5345 | 2.8) --> vStopped | |
5346 | 2.9) --> OK | |
5347 | */ | |
5348 | ||
5349 | static void | |
5350 | remote_get_pending_stop_replies (void) | |
5351 | { | |
5352 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5353 | |
5354 | if (pending_stop_reply) | |
5355 | { | |
5356 | /* acknowledge */ | |
5357 | putpkt ("vStopped"); | |
5358 | ||
5359 | /* Now we can rely on it. */ | |
5360 | push_stop_reply (pending_stop_reply); | |
5361 | pending_stop_reply = NULL; | |
5362 | ||
5363 | while (1) | |
5364 | { | |
5365 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5366 | if (strcmp (rs->buf, "OK") == 0) | |
5367 | break; | |
5368 | else | |
5369 | { | |
5370 | struct cleanup *old_chain; | |
5371 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5372 | ||
5373 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5374 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5375 | ||
5376 | /* acknowledge */ | |
5377 | putpkt ("vStopped"); | |
5378 | ||
5379 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5380 | { | |
5381 | /* Now we can rely on it. */ | |
5382 | discard_cleanups (old_chain); | |
5383 | push_stop_reply (stop_reply); | |
5384 | } | |
5385 | else | |
5386 | /* We got an unknown stop reply. */ | |
5387 | do_cleanups (old_chain); | |
5388 | } | |
5389 | } | |
5390 | } | |
5391 | } | |
5392 | ||
5393 | ||
5394 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5395 | event that is to be returned to the core. This function always | |
5396 | destroys STOP_REPLY. */ | |
5397 | ||
5398 | static ptid_t | |
5399 | process_stop_reply (struct stop_reply *stop_reply, | |
5400 | struct target_waitstatus *status) | |
5401 | { | |
5402 | ptid_t ptid; | |
5403 | ||
5404 | *status = stop_reply->ws; | |
5405 | ptid = stop_reply->ptid; | |
5406 | ||
5407 | /* If no thread/process was reported by the stub, assume the current | |
5408 | inferior. */ | |
5409 | if (ptid_equal (ptid, null_ptid)) | |
5410 | ptid = inferior_ptid; | |
5411 | ||
5f3563ea PA |
5412 | if (status->kind != TARGET_WAITKIND_EXITED |
5413 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5414 | { |
5f3563ea PA |
5415 | /* Expedited registers. */ |
5416 | if (stop_reply->regcache) | |
5417 | { | |
217f1f79 UW |
5418 | struct regcache *regcache |
5419 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5420 | cached_reg_t *reg; |
5421 | int ix; | |
5422 | ||
5423 | for (ix = 0; | |
5424 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5425 | ix++) | |
217f1f79 | 5426 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5427 | VEC_free (cached_reg_t, stop_reply->regcache); |
5428 | } | |
74531fed | 5429 | |
5f3563ea PA |
5430 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5431 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5432 | |
5433 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5434 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5435 | } |
5436 | ||
74531fed PA |
5437 | stop_reply_xfree (stop_reply); |
5438 | return ptid; | |
5439 | } | |
5440 | ||
5441 | /* The non-stop mode version of target_wait. */ | |
5442 | ||
5443 | static ptid_t | |
47608cb1 | 5444 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5445 | { |
5446 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5447 | struct stop_reply *stop_reply; |
5448 | int ret; | |
5449 | ||
5450 | /* If in non-stop mode, get out of getpkt even if a | |
5451 | notification is received. */ | |
5452 | ||
5453 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5454 | 0 /* forever */); | |
5455 | while (1) | |
5456 | { | |
5457 | if (ret != -1) | |
5458 | switch (rs->buf[0]) | |
5459 | { | |
5460 | case 'E': /* Error of some sort. */ | |
5461 | /* We're out of sync with the target now. Did it continue | |
5462 | or not? We can't tell which thread it was in non-stop, | |
5463 | so just ignore this. */ | |
5464 | warning (_("Remote failure reply: %s"), rs->buf); | |
5465 | break; | |
5466 | case 'O': /* Console output. */ | |
5467 | remote_console_output (rs->buf + 1); | |
5468 | break; | |
5469 | default: | |
5470 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5471 | break; | |
5472 | } | |
5473 | ||
5474 | /* Acknowledge a pending stop reply that may have arrived in the | |
5475 | mean time. */ | |
5476 | if (pending_stop_reply != NULL) | |
5477 | remote_get_pending_stop_replies (); | |
5478 | ||
5479 | /* If indeed we noticed a stop reply, we're done. */ | |
5480 | stop_reply = queued_stop_reply (ptid); | |
5481 | if (stop_reply != NULL) | |
5482 | return process_stop_reply (stop_reply, status); | |
5483 | ||
47608cb1 | 5484 | /* Still no event. If we're just polling for an event, then |
74531fed | 5485 | return to the event loop. */ |
47608cb1 | 5486 | if (options & TARGET_WNOHANG) |
74531fed PA |
5487 | { |
5488 | status->kind = TARGET_WAITKIND_IGNORE; | |
5489 | return minus_one_ptid; | |
5490 | } | |
5491 | ||
47608cb1 | 5492 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5493 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5494 | 1 /* forever */); | |
5495 | } | |
5496 | } | |
5497 | ||
5498 | /* Wait until the remote machine stops, then return, storing status in | |
5499 | STATUS just as `wait' would. */ | |
5500 | ||
5501 | static ptid_t | |
47608cb1 | 5502 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5503 | { |
5504 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5505 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5506 | char *buf; |
74531fed PA |
5507 | struct stop_reply *stop_reply; |
5508 | ||
47608cb1 PA |
5509 | again: |
5510 | ||
74531fed PA |
5511 | status->kind = TARGET_WAITKIND_IGNORE; |
5512 | status->value.integer = 0; | |
5513 | ||
5514 | stop_reply = queued_stop_reply (ptid); | |
5515 | if (stop_reply != NULL) | |
5516 | return process_stop_reply (stop_reply, status); | |
5517 | ||
5518 | if (rs->cached_wait_status) | |
5519 | /* Use the cached wait status, but only once. */ | |
5520 | rs->cached_wait_status = 0; | |
5521 | else | |
5522 | { | |
5523 | int ret; | |
5524 | ||
5525 | if (!target_is_async_p ()) | |
5526 | { | |
5527 | ofunc = signal (SIGINT, remote_interrupt); | |
5528 | /* If the user hit C-c before this packet, or between packets, | |
5529 | pretend that it was hit right here. */ | |
5530 | if (quit_flag) | |
5531 | { | |
5532 | quit_flag = 0; | |
5533 | remote_interrupt (SIGINT); | |
5534 | } | |
5535 | } | |
5536 | ||
5537 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5538 | _never_ wait for ever -> test on target_is_async_p(). | |
5539 | However, before we do that we need to ensure that the caller | |
5540 | knows how to take the target into/out of async mode. */ | |
5541 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5542 | if (!target_is_async_p ()) | |
5543 | signal (SIGINT, ofunc); | |
5544 | } | |
5545 | ||
5546 | buf = rs->buf; | |
5547 | ||
5548 | remote_stopped_by_watchpoint_p = 0; | |
5549 | ||
5550 | /* We got something. */ | |
5551 | rs->waiting_for_stop_reply = 0; | |
5552 | ||
3a29589a DJ |
5553 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5554 | an 'F' or 'O' packet. */ | |
5555 | if (buf[0] != 'F' && buf[0] != 'O') | |
5556 | rs->ctrlc_pending_p = 0; | |
5557 | ||
74531fed PA |
5558 | switch (buf[0]) |
5559 | { | |
5560 | case 'E': /* Error of some sort. */ | |
5561 | /* We're out of sync with the target now. Did it continue or | |
5562 | not? Not is more likely, so report a stop. */ | |
5563 | warning (_("Remote failure reply: %s"), buf); | |
5564 | status->kind = TARGET_WAITKIND_STOPPED; | |
5565 | status->value.sig = TARGET_SIGNAL_0; | |
5566 | break; | |
5567 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5568 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5569 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5570 | break; |
5571 | case 'T': case 'S': case 'X': case 'W': | |
5572 | { | |
5573 | struct stop_reply *stop_reply; | |
5574 | struct cleanup *old_chain; | |
5575 | ||
5576 | stop_reply = stop_reply_xmalloc (); | |
5577 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5578 | remote_parse_stop_reply (buf, stop_reply); | |
5579 | discard_cleanups (old_chain); | |
5580 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5581 | break; |
5582 | } | |
5583 | case 'O': /* Console output. */ | |
5584 | remote_console_output (buf + 1); | |
e24a49d8 | 5585 | |
c8e38a49 PA |
5586 | /* The target didn't really stop; keep waiting. */ |
5587 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5588 | |
c8e38a49 PA |
5589 | break; |
5590 | case '\0': | |
5591 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5592 | { | |
5593 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5594 | remote system doesn't support it. */ | |
5595 | target_terminal_ours_for_output (); | |
5596 | printf_filtered | |
5597 | ("Can't send signals to this remote system. %s not sent.\n", | |
5598 | target_signal_to_name (last_sent_signal)); | |
5599 | last_sent_signal = TARGET_SIGNAL_0; | |
5600 | target_terminal_inferior (); | |
5601 | ||
5602 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5603 | putpkt ((char *) buf); | |
5604 | ||
5605 | /* We just told the target to resume, so a stop reply is in | |
5606 | order. */ | |
e24a49d8 | 5607 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5608 | break; |
43ff13b4 | 5609 | } |
c8e38a49 PA |
5610 | /* else fallthrough */ |
5611 | default: | |
5612 | warning (_("Invalid remote reply: %s"), buf); | |
5613 | /* Keep waiting. */ | |
5614 | rs->waiting_for_stop_reply = 1; | |
5615 | break; | |
43ff13b4 | 5616 | } |
c8e38a49 | 5617 | |
c8e38a49 | 5618 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5619 | { |
5620 | /* Nothing interesting happened. If we're doing a non-blocking | |
5621 | poll, we're done. Otherwise, go back to waiting. */ | |
5622 | if (options & TARGET_WNOHANG) | |
5623 | return minus_one_ptid; | |
5624 | else | |
5625 | goto again; | |
5626 | } | |
74531fed PA |
5627 | else if (status->kind != TARGET_WAITKIND_EXITED |
5628 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5629 | { |
5630 | if (!ptid_equal (event_ptid, null_ptid)) | |
5631 | record_currthread (event_ptid); | |
5632 | else | |
5633 | event_ptid = inferior_ptid; | |
43ff13b4 | 5634 | } |
74531fed PA |
5635 | else |
5636 | /* A process exit. Invalidate our notion of current thread. */ | |
5637 | record_currthread (minus_one_ptid); | |
79d7f229 | 5638 | |
82f73884 | 5639 | return event_ptid; |
43ff13b4 JM |
5640 | } |
5641 | ||
74531fed PA |
5642 | /* Wait until the remote machine stops, then return, storing status in |
5643 | STATUS just as `wait' would. */ | |
5644 | ||
c8e38a49 | 5645 | static ptid_t |
117de6a9 | 5646 | remote_wait (struct target_ops *ops, |
47608cb1 | 5647 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5648 | { |
5649 | ptid_t event_ptid; | |
5650 | ||
74531fed | 5651 | if (non_stop) |
47608cb1 | 5652 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5653 | else |
47608cb1 | 5654 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5655 | |
74531fed | 5656 | if (target_can_async_p ()) |
c8e38a49 | 5657 | { |
74531fed PA |
5658 | /* If there are are events left in the queue tell the event loop |
5659 | to return here. */ | |
5660 | if (stop_reply_queue) | |
5661 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5662 | } |
c8e38a49 PA |
5663 | |
5664 | return event_ptid; | |
5665 | } | |
5666 | ||
74ca34ce | 5667 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5668 | |
b96ec7ac | 5669 | static int |
56be3814 | 5670 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5671 | { |
5672 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5673 | char *buf, *p; |
b96ec7ac AC |
5674 | char regp[MAX_REGISTER_SIZE]; |
5675 | int i; | |
5676 | ||
74ca34ce DJ |
5677 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5678 | return 0; | |
5679 | ||
5680 | if (reg->pnum == -1) | |
5681 | return 0; | |
5682 | ||
2e9f7625 | 5683 | p = rs->buf; |
fcad0fa4 | 5684 | *p++ = 'p'; |
74ca34ce | 5685 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5686 | *p++ = '\0'; |
1f4437a4 MS |
5687 | putpkt (rs->buf); |
5688 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5689 | |
2e9f7625 DJ |
5690 | buf = rs->buf; |
5691 | ||
74ca34ce DJ |
5692 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5693 | { | |
5694 | case PACKET_OK: | |
5695 | break; | |
5696 | case PACKET_UNKNOWN: | |
5697 | return 0; | |
5698 | case PACKET_ERROR: | |
27a9c0bf MS |
5699 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5700 | gdbarch_register_name (get_regcache_arch (regcache), | |
5701 | reg->regnum), | |
5702 | buf); | |
74ca34ce | 5703 | } |
3f9a994c JB |
5704 | |
5705 | /* If this register is unfetchable, tell the regcache. */ | |
5706 | if (buf[0] == 'x') | |
8480adf2 | 5707 | { |
56be3814 | 5708 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5709 | return 1; |
b96ec7ac | 5710 | } |
b96ec7ac | 5711 | |
3f9a994c JB |
5712 | /* Otherwise, parse and supply the value. */ |
5713 | p = buf; | |
5714 | i = 0; | |
5715 | while (p[0] != 0) | |
5716 | { | |
5717 | if (p[1] == 0) | |
74ca34ce | 5718 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5719 | |
5720 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5721 | p += 2; | |
5722 | } | |
56be3814 | 5723 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5724 | return 1; |
b96ec7ac AC |
5725 | } |
5726 | ||
74ca34ce DJ |
5727 | /* Fetch the registers included in the target's 'g' packet. */ |
5728 | ||
29709017 DJ |
5729 | static int |
5730 | send_g_packet (void) | |
c906108c | 5731 | { |
d01949b6 | 5732 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5733 | int buf_len; |
c906108c | 5734 | |
74ca34ce DJ |
5735 | sprintf (rs->buf, "g"); |
5736 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5737 | |
29709017 DJ |
5738 | /* We can get out of synch in various cases. If the first character |
5739 | in the buffer is not a hex character, assume that has happened | |
5740 | and try to fetch another packet to read. */ | |
5741 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5742 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5743 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5744 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5745 | { | |
5746 | if (remote_debug) | |
5747 | fprintf_unfiltered (gdb_stdlog, | |
5748 | "Bad register packet; fetching a new packet\n"); | |
5749 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5750 | } | |
5751 | ||
74ca34ce DJ |
5752 | buf_len = strlen (rs->buf); |
5753 | ||
5754 | /* Sanity check the received packet. */ | |
5755 | if (buf_len % 2 != 0) | |
5756 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5757 | |
5758 | return buf_len / 2; | |
5759 | } | |
5760 | ||
5761 | static void | |
56be3814 | 5762 | process_g_packet (struct regcache *regcache) |
29709017 | 5763 | { |
4a22f64d | 5764 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5765 | struct remote_state *rs = get_remote_state (); |
5766 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5767 | int i, buf_len; | |
5768 | char *p; | |
5769 | char *regs; | |
5770 | ||
5771 | buf_len = strlen (rs->buf); | |
5772 | ||
5773 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5774 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5775 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5776 | ||
5777 | /* Save the size of the packet sent to us by the target. It is used | |
5778 | as a heuristic when determining the max size of packets that the | |
5779 | target can safely receive. */ | |
5780 | if (rsa->actual_register_packet_size == 0) | |
5781 | rsa->actual_register_packet_size = buf_len; | |
5782 | ||
5783 | /* If this is smaller than we guessed the 'g' packet would be, | |
5784 | update our records. A 'g' reply that doesn't include a register's | |
5785 | value implies either that the register is not available, or that | |
5786 | the 'p' packet must be used. */ | |
5787 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5788 | { |
74ca34ce DJ |
5789 | rsa->sizeof_g_packet = buf_len / 2; |
5790 | ||
4a22f64d | 5791 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5792 | { |
74ca34ce DJ |
5793 | if (rsa->regs[i].pnum == -1) |
5794 | continue; | |
5795 | ||
5796 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5797 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5798 | else |
74ca34ce | 5799 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5800 | } |
74ca34ce | 5801 | } |
b323314b | 5802 | |
74ca34ce | 5803 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5804 | |
5805 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5806 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5807 | |
c906108c SS |
5808 | /* Reply describes registers byte by byte, each byte encoded as two |
5809 | hex characters. Suck them all up, then supply them to the | |
5810 | register cacheing/storage mechanism. */ | |
5811 | ||
74ca34ce | 5812 | p = rs->buf; |
ea9c271d | 5813 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5814 | { |
74ca34ce DJ |
5815 | if (p[0] == 0 || p[1] == 0) |
5816 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5817 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5818 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5819 | |
c906108c | 5820 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5821 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5822 | else |
5823 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5824 | p += 2; | |
5825 | } | |
5826 | ||
a744cf53 MS |
5827 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5828 | { | |
5829 | struct packet_reg *r = &rsa->regs[i]; | |
5830 | ||
5831 | if (r->in_g_packet) | |
5832 | { | |
5833 | if (r->offset * 2 >= strlen (rs->buf)) | |
5834 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5835 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5836 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
5837 | else if (rs->buf[r->offset * 2] == 'x') |
5838 | { | |
5839 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5840 | /* The register isn't available, mark it as such (at | |
5841 | the same time setting the value to zero). */ | |
5842 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5843 | } | |
5844 | else | |
5845 | regcache_raw_supply (regcache, r->regnum, | |
5846 | regs + r->offset); | |
5847 | } | |
5848 | } | |
c906108c SS |
5849 | } |
5850 | ||
29709017 | 5851 | static void |
56be3814 | 5852 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5853 | { |
5854 | send_g_packet (); | |
56be3814 | 5855 | process_g_packet (regcache); |
29709017 DJ |
5856 | } |
5857 | ||
e6e4e701 PA |
5858 | /* Make the remote selected traceframe match GDB's selected |
5859 | traceframe. */ | |
5860 | ||
5861 | static void | |
5862 | set_remote_traceframe (void) | |
5863 | { | |
5864 | int newnum; | |
5865 | ||
5866 | if (remote_traceframe_number == get_traceframe_number ()) | |
5867 | return; | |
5868 | ||
5869 | /* Avoid recursion, remote_trace_find calls us again. */ | |
5870 | remote_traceframe_number = get_traceframe_number (); | |
5871 | ||
5872 | newnum = target_trace_find (tfind_number, | |
5873 | get_traceframe_number (), 0, 0, NULL); | |
5874 | ||
5875 | /* Should not happen. If it does, all bets are off. */ | |
5876 | if (newnum != get_traceframe_number ()) | |
5877 | warning (_("could not set remote traceframe")); | |
5878 | } | |
5879 | ||
74ca34ce | 5880 | static void |
28439f5e PA |
5881 | remote_fetch_registers (struct target_ops *ops, |
5882 | struct regcache *regcache, int regnum) | |
74ca34ce | 5883 | { |
74ca34ce DJ |
5884 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5885 | int i; | |
5886 | ||
e6e4e701 | 5887 | set_remote_traceframe (); |
79d7f229 | 5888 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5889 | |
5890 | if (regnum >= 0) | |
5891 | { | |
5892 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5893 | |
74ca34ce DJ |
5894 | gdb_assert (reg != NULL); |
5895 | ||
5896 | /* If this register might be in the 'g' packet, try that first - | |
5897 | we are likely to read more than one register. If this is the | |
5898 | first 'g' packet, we might be overly optimistic about its | |
5899 | contents, so fall back to 'p'. */ | |
5900 | if (reg->in_g_packet) | |
5901 | { | |
56be3814 | 5902 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5903 | if (reg->in_g_packet) |
5904 | return; | |
5905 | } | |
5906 | ||
56be3814 | 5907 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5908 | return; |
5909 | ||
5910 | /* This register is not available. */ | |
56be3814 | 5911 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5912 | |
5913 | return; | |
5914 | } | |
5915 | ||
56be3814 | 5916 | fetch_registers_using_g (regcache); |
74ca34ce | 5917 | |
4a22f64d | 5918 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5919 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5920 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5921 | { |
5922 | /* This register is not available. */ | |
56be3814 | 5923 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5924 | } |
5925 | } | |
5926 | ||
c906108c SS |
5927 | /* Prepare to store registers. Since we may send them all (using a |
5928 | 'G' request), we have to read out the ones we don't want to change | |
5929 | first. */ | |
5930 | ||
c5aa993b | 5931 | static void |
316f2060 | 5932 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5933 | { |
ea9c271d | 5934 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5935 | int i; |
cfd77fa1 | 5936 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5937 | |
c906108c | 5938 | /* Make sure the entire registers array is valid. */ |
444abaca | 5939 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5940 | { |
5941 | case PACKET_DISABLE: | |
5942 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5943 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5944 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5945 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5946 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
5947 | break; |
5948 | case PACKET_ENABLE: | |
5949 | break; | |
5950 | } | |
5951 | } | |
5952 | ||
ad10f812 | 5953 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 5954 | packet was not recognized. */ |
5a2468f5 JM |
5955 | |
5956 | static int | |
1f4437a4 MS |
5957 | store_register_using_P (const struct regcache *regcache, |
5958 | struct packet_reg *reg) | |
5a2468f5 | 5959 | { |
4a22f64d | 5960 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 5961 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 5962 | /* Try storing a single register. */ |
6d820c5c | 5963 | char *buf = rs->buf; |
cfd77fa1 | 5964 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 5965 | char *p; |
5a2468f5 | 5966 | |
74ca34ce DJ |
5967 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
5968 | return 0; | |
5969 | ||
5970 | if (reg->pnum == -1) | |
5971 | return 0; | |
5972 | ||
ea9c271d | 5973 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 5974 | p = buf + strlen (buf); |
56be3814 | 5975 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 5976 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
5977 | putpkt (rs->buf); |
5978 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 5979 | |
74ca34ce DJ |
5980 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
5981 | { | |
5982 | case PACKET_OK: | |
5983 | return 1; | |
5984 | case PACKET_ERROR: | |
27a9c0bf MS |
5985 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
5986 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
5987 | case PACKET_UNKNOWN: |
5988 | return 0; | |
5989 | default: | |
5990 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
5991 | } | |
c906108c SS |
5992 | } |
5993 | ||
23860348 MS |
5994 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
5995 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
5996 | |
5997 | static void | |
56be3814 | 5998 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 5999 | { |
d01949b6 | 6000 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6001 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6002 | gdb_byte *regs; |
c906108c SS |
6003 | char *p; |
6004 | ||
193cb69f AC |
6005 | /* Extract all the registers in the regcache copying them into a |
6006 | local buffer. */ | |
6007 | { | |
b323314b | 6008 | int i; |
a744cf53 | 6009 | |
ea9c271d DJ |
6010 | regs = alloca (rsa->sizeof_g_packet); |
6011 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6012 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6013 | { |
ea9c271d | 6014 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6015 | |
b323314b | 6016 | if (r->in_g_packet) |
56be3814 | 6017 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6018 | } |
6019 | } | |
c906108c SS |
6020 | |
6021 | /* Command describes registers byte by byte, | |
6022 | each byte encoded as two hex characters. */ | |
6d820c5c | 6023 | p = rs->buf; |
193cb69f | 6024 | *p++ = 'G'; |
74ca34ce DJ |
6025 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6026 | updated. */ | |
6027 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6028 | putpkt (rs->buf); |
6029 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6030 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6031 | error (_("Could not write registers; remote failure reply '%s'"), |
6032 | rs->buf); | |
c906108c | 6033 | } |
74ca34ce DJ |
6034 | |
6035 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6036 | of the register cache buffer. FIXME: ignores errors. */ | |
6037 | ||
6038 | static void | |
28439f5e PA |
6039 | remote_store_registers (struct target_ops *ops, |
6040 | struct regcache *regcache, int regnum) | |
74ca34ce | 6041 | { |
74ca34ce DJ |
6042 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6043 | int i; | |
6044 | ||
e6e4e701 | 6045 | set_remote_traceframe (); |
79d7f229 | 6046 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6047 | |
6048 | if (regnum >= 0) | |
6049 | { | |
6050 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6051 | |
74ca34ce DJ |
6052 | gdb_assert (reg != NULL); |
6053 | ||
6054 | /* Always prefer to store registers using the 'P' packet if | |
6055 | possible; we often change only a small number of registers. | |
6056 | Sometimes we change a larger number; we'd need help from a | |
6057 | higher layer to know to use 'G'. */ | |
56be3814 | 6058 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6059 | return; |
6060 | ||
6061 | /* For now, don't complain if we have no way to write the | |
6062 | register. GDB loses track of unavailable registers too | |
6063 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6064 | any way to read the register, either... */ |
74ca34ce DJ |
6065 | if (!reg->in_g_packet) |
6066 | return; | |
6067 | ||
56be3814 | 6068 | store_registers_using_G (regcache); |
74ca34ce DJ |
6069 | return; |
6070 | } | |
6071 | ||
56be3814 | 6072 | store_registers_using_G (regcache); |
74ca34ce | 6073 | |
4a22f64d | 6074 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6075 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6076 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6077 | /* See above for why we do not issue an error here. */ |
6078 | continue; | |
6079 | } | |
c906108c SS |
6080 | \f |
6081 | ||
6082 | /* Return the number of hex digits in num. */ | |
6083 | ||
6084 | static int | |
fba45db2 | 6085 | hexnumlen (ULONGEST num) |
c906108c SS |
6086 | { |
6087 | int i; | |
6088 | ||
6089 | for (i = 0; num != 0; i++) | |
6090 | num >>= 4; | |
6091 | ||
6092 | return max (i, 1); | |
6093 | } | |
6094 | ||
2df3850c | 6095 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6096 | |
6097 | static int | |
fba45db2 | 6098 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6099 | { |
c906108c | 6100 | int len = hexnumlen (num); |
a744cf53 | 6101 | |
2df3850c JM |
6102 | return hexnumnstr (buf, num, len); |
6103 | } | |
6104 | ||
c906108c | 6105 | |
2df3850c | 6106 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6107 | |
2df3850c | 6108 | static int |
fba45db2 | 6109 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6110 | { |
6111 | int i; | |
6112 | ||
6113 | buf[width] = '\0'; | |
6114 | ||
6115 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6116 | { |
c5aa993b | 6117 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6118 | num >>= 4; |
6119 | } | |
6120 | ||
2df3850c | 6121 | return width; |
c906108c SS |
6122 | } |
6123 | ||
23860348 | 6124 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6125 | |
6126 | static CORE_ADDR | |
fba45db2 | 6127 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6128 | { |
911c95a5 | 6129 | int address_size = remote_address_size; |
a744cf53 | 6130 | |
911c95a5 UW |
6131 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6132 | if (!address_size) | |
1cf3db46 | 6133 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6134 | |
6135 | if (address_size > 0 | |
6136 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6137 | { |
6138 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6139 | in a ULONGEST variable. */ |
c906108c | 6140 | ULONGEST mask = 1; |
a744cf53 | 6141 | |
911c95a5 | 6142 | mask = (mask << address_size) - 1; |
c906108c SS |
6143 | addr &= mask; |
6144 | } | |
6145 | return addr; | |
6146 | } | |
6147 | ||
a31ea83d DJ |
6148 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6149 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6150 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6151 | (which may be more than *OUT_LEN due to escape characters). The | |
6152 | total number of bytes in the output buffer will be at most | |
6153 | OUT_MAXLEN. */ | |
6154 | ||
6155 | static int | |
6156 | remote_escape_output (const gdb_byte *buffer, int len, | |
6157 | gdb_byte *out_buf, int *out_len, | |
6158 | int out_maxlen) | |
6159 | { | |
6160 | int input_index, output_index; | |
6161 | ||
6162 | output_index = 0; | |
6163 | for (input_index = 0; input_index < len; input_index++) | |
6164 | { | |
6165 | gdb_byte b = buffer[input_index]; | |
6166 | ||
6167 | if (b == '$' || b == '#' || b == '}') | |
6168 | { | |
6169 | /* These must be escaped. */ | |
6170 | if (output_index + 2 > out_maxlen) | |
6171 | break; | |
6172 | out_buf[output_index++] = '}'; | |
6173 | out_buf[output_index++] = b ^ 0x20; | |
6174 | } | |
6175 | else | |
6176 | { | |
6177 | if (output_index + 1 > out_maxlen) | |
6178 | break; | |
6179 | out_buf[output_index++] = b; | |
6180 | } | |
6181 | } | |
6182 | ||
6183 | *out_len = input_index; | |
6184 | return output_index; | |
6185 | } | |
6186 | ||
0876f84a DJ |
6187 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6188 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6189 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6190 | ||
6191 | This function reverses remote_escape_output. It allows more | |
6192 | escaped characters than that function does, in particular because | |
6193 | '*' must be escaped to avoid the run-length encoding processing | |
6194 | in reading packets. */ | |
6195 | ||
6196 | static int | |
6197 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6198 | gdb_byte *out_buf, int out_maxlen) | |
6199 | { | |
6200 | int input_index, output_index; | |
6201 | int escaped; | |
6202 | ||
6203 | output_index = 0; | |
6204 | escaped = 0; | |
6205 | for (input_index = 0; input_index < len; input_index++) | |
6206 | { | |
6207 | gdb_byte b = buffer[input_index]; | |
6208 | ||
6209 | if (output_index + 1 > out_maxlen) | |
6210 | { | |
6211 | warning (_("Received too much data from remote target;" | |
6212 | " ignoring overflow.")); | |
6213 | return output_index; | |
6214 | } | |
6215 | ||
6216 | if (escaped) | |
6217 | { | |
6218 | out_buf[output_index++] = b ^ 0x20; | |
6219 | escaped = 0; | |
6220 | } | |
6221 | else if (b == '}') | |
6222 | escaped = 1; | |
6223 | else | |
6224 | out_buf[output_index++] = b; | |
6225 | } | |
6226 | ||
6227 | if (escaped) | |
6228 | error (_("Unmatched escape character in target response.")); | |
6229 | ||
6230 | return output_index; | |
6231 | } | |
6232 | ||
c906108c SS |
6233 | /* Determine whether the remote target supports binary downloading. |
6234 | This is accomplished by sending a no-op memory write of zero length | |
6235 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6236 | the whole packet, since many stubs strip the eighth bit and |
6237 | subsequently compute a wrong checksum, which causes real havoc with | |
6238 | remote_write_bytes. | |
7a292a7a | 6239 | |
96baa820 | 6240 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6241 | clean. In cases like this, the user should clear "remote |
23860348 | 6242 | X-packet". */ |
96baa820 | 6243 | |
c906108c | 6244 | static void |
fba45db2 | 6245 | check_binary_download (CORE_ADDR addr) |
c906108c | 6246 | { |
d01949b6 | 6247 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6248 | |
444abaca | 6249 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6250 | { |
96baa820 JM |
6251 | case PACKET_DISABLE: |
6252 | break; | |
6253 | case PACKET_ENABLE: | |
6254 | break; | |
6255 | case PACKET_SUPPORT_UNKNOWN: | |
6256 | { | |
96baa820 | 6257 | char *p; |
802188a7 | 6258 | |
2e9f7625 | 6259 | p = rs->buf; |
96baa820 JM |
6260 | *p++ = 'X'; |
6261 | p += hexnumstr (p, (ULONGEST) addr); | |
6262 | *p++ = ','; | |
6263 | p += hexnumstr (p, (ULONGEST) 0); | |
6264 | *p++ = ':'; | |
6265 | *p = '\0'; | |
802188a7 | 6266 | |
2e9f7625 | 6267 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6268 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6269 | |
2e9f7625 | 6270 | if (rs->buf[0] == '\0') |
96baa820 JM |
6271 | { |
6272 | if (remote_debug) | |
6273 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6274 | "binary downloading NOT " |
6275 | "supported by target\n"); | |
444abaca | 6276 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6277 | } |
6278 | else | |
6279 | { | |
6280 | if (remote_debug) | |
6281 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6282 | "binary downloading supported by target\n"); |
444abaca | 6283 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6284 | } |
6285 | break; | |
6286 | } | |
c906108c SS |
6287 | } |
6288 | } | |
6289 | ||
6290 | /* Write memory data directly to the remote machine. | |
6291 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6292 | HEADER is the starting part of the packet. |
c906108c SS |
6293 | MEMADDR is the address in the remote memory space. |
6294 | MYADDR is the address of the buffer in our space. | |
6295 | LEN is the number of bytes. | |
a76d924d DJ |
6296 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6297 | should send data as binary ('X'), or hex-encoded ('M'). | |
6298 | ||
6299 | The function creates packet of the form | |
6300 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6301 | ||
6302 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6303 | ||
6304 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6305 | are omitted. | |
6306 | ||
6307 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6308 | error. Only transfer a single packet. */ |
c906108c | 6309 | |
a76d924d DJ |
6310 | static int |
6311 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6312 | const gdb_byte *myaddr, int len, | |
6313 | char packet_format, int use_length) | |
c906108c | 6314 | { |
6d820c5c | 6315 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6316 | char *p; |
a76d924d DJ |
6317 | char *plen = NULL; |
6318 | int plenlen = 0; | |
917317f4 JM |
6319 | int todo; |
6320 | int nr_bytes; | |
a257b5bb | 6321 | int payload_size; |
6765f3e5 | 6322 | int payload_length; |
a76d924d DJ |
6323 | int header_length; |
6324 | ||
6325 | if (packet_format != 'X' && packet_format != 'M') | |
6326 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6327 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6328 | |
b2182ed2 DJ |
6329 | if (len <= 0) |
6330 | return 0; | |
6331 | ||
3de11b2e | 6332 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6333 | |
6d820c5c DJ |
6334 | /* The packet buffer will be large enough for the payload; |
6335 | get_memory_packet_size ensures this. */ | |
a76d924d | 6336 | rs->buf[0] = '\0'; |
c906108c | 6337 | |
a257b5bb | 6338 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6339 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6340 | ||
a76d924d DJ |
6341 | payload_size -= strlen ("$,:#NN"); |
6342 | if (!use_length) | |
0df8b418 | 6343 | /* The comma won't be used. */ |
a76d924d DJ |
6344 | payload_size += 1; |
6345 | header_length = strlen (header); | |
6346 | payload_size -= header_length; | |
3de11b2e | 6347 | payload_size -= hexnumlen (memaddr); |
c906108c | 6348 | |
a76d924d | 6349 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6350 | |
a76d924d DJ |
6351 | strcat (rs->buf, header); |
6352 | p = rs->buf + strlen (header); | |
6353 | ||
6354 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6355 | if (packet_format == 'X') | |
c906108c | 6356 | { |
23860348 | 6357 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6358 | todo = min (len, payload_size); |
a76d924d DJ |
6359 | if (use_length) |
6360 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6361 | todo = min (todo, payload_size); |
a76d924d DJ |
6362 | } |
6363 | else | |
6364 | { | |
23860348 | 6365 | /* Num bytes that will fit. */ |
a257b5bb | 6366 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6367 | if (use_length) |
6368 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6369 | todo = min (todo, payload_size / 2); |
917317f4 | 6370 | } |
a76d924d | 6371 | |
3de11b2e NS |
6372 | if (todo <= 0) |
6373 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6374 | _("minimum packet size too small to write data")); |
802188a7 | 6375 | |
6765f3e5 DJ |
6376 | /* If we already need another packet, then try to align the end |
6377 | of this packet to a useful boundary. */ | |
6378 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6379 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6380 | ||
a257b5bb | 6381 | /* Append "<memaddr>". */ |
917317f4 JM |
6382 | memaddr = remote_address_masked (memaddr); |
6383 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6384 | |
a76d924d DJ |
6385 | if (use_length) |
6386 | { | |
6387 | /* Append ",". */ | |
6388 | *p++ = ','; | |
802188a7 | 6389 | |
a76d924d DJ |
6390 | /* Append <len>. Retain the location/size of <len>. It may need to |
6391 | be adjusted once the packet body has been created. */ | |
6392 | plen = p; | |
6393 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6394 | p += plenlen; | |
6395 | } | |
a257b5bb AC |
6396 | |
6397 | /* Append ":". */ | |
917317f4 JM |
6398 | *p++ = ':'; |
6399 | *p = '\0'; | |
802188a7 | 6400 | |
a257b5bb | 6401 | /* Append the packet body. */ |
a76d924d | 6402 | if (packet_format == 'X') |
917317f4 | 6403 | { |
917317f4 JM |
6404 | /* Binary mode. Send target system values byte by byte, in |
6405 | increasing byte addresses. Only escape certain critical | |
6406 | characters. */ | |
6765f3e5 DJ |
6407 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6408 | payload_size); | |
6409 | ||
6410 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6411 | a second try to keep the end of the packet aligned. Don't do |
6412 | this if the packet is tiny. */ | |
6413 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6414 | { |
6415 | int new_nr_bytes; | |
6416 | ||
6417 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6418 | - memaddr); | |
6419 | if (new_nr_bytes != nr_bytes) | |
6420 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6421 | p, &nr_bytes, | |
6422 | payload_size); | |
6423 | } | |
6424 | ||
6425 | p += payload_length; | |
a76d924d | 6426 | if (use_length && nr_bytes < todo) |
c906108c | 6427 | { |
802188a7 | 6428 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6429 | and we have actually sent fewer bytes than planned. |
6430 | Fix-up the length field of the packet. Use the same | |
6431 | number of characters as before. */ | |
917317f4 JM |
6432 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6433 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6434 | } |
a76d924d DJ |
6435 | } |
6436 | else | |
6437 | { | |
917317f4 JM |
6438 | /* Normal mode: Send target system values byte by byte, in |
6439 | increasing byte addresses. Each byte is encoded as a two hex | |
6440 | value. */ | |
2644f393 | 6441 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6442 | p += 2 * nr_bytes; |
c906108c | 6443 | } |
802188a7 | 6444 | |
2e9f7625 | 6445 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6446 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6447 | |
2e9f7625 | 6448 | if (rs->buf[0] == 'E') |
917317f4 JM |
6449 | { |
6450 | /* There is no correspondance between what the remote protocol | |
6451 | uses for errors and errno codes. We would like a cleaner way | |
6452 | of representing errors (big enough to include errno codes, | |
6453 | bfd_error codes, and others). But for now just return EIO. */ | |
6454 | errno = EIO; | |
6455 | return 0; | |
6456 | } | |
802188a7 | 6457 | |
23860348 MS |
6458 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6459 | fewer bytes than we'd planned. */ | |
917317f4 | 6460 | return nr_bytes; |
c906108c SS |
6461 | } |
6462 | ||
a76d924d DJ |
6463 | /* Write memory data directly to the remote machine. |
6464 | This does not inform the data cache; the data cache uses this. | |
6465 | MEMADDR is the address in the remote memory space. | |
6466 | MYADDR is the address of the buffer in our space. | |
6467 | LEN is the number of bytes. | |
6468 | ||
6469 | Returns number of bytes transferred, or 0 (setting errno) for | |
6470 | error. Only transfer a single packet. */ | |
6471 | ||
f7605bc2 | 6472 | static int |
a76d924d DJ |
6473 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
6474 | { | |
6475 | char *packet_format = 0; | |
6476 | ||
6477 | /* Check whether the target supports binary download. */ | |
6478 | check_binary_download (memaddr); | |
6479 | ||
6480 | switch (remote_protocol_packets[PACKET_X].support) | |
6481 | { | |
6482 | case PACKET_ENABLE: | |
6483 | packet_format = "X"; | |
6484 | break; | |
6485 | case PACKET_DISABLE: | |
6486 | packet_format = "M"; | |
6487 | break; | |
6488 | case PACKET_SUPPORT_UNKNOWN: | |
6489 | internal_error (__FILE__, __LINE__, | |
6490 | _("remote_write_bytes: bad internal state")); | |
6491 | default: | |
6492 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6493 | } | |
6494 | ||
6495 | return remote_write_bytes_aux (packet_format, | |
6496 | memaddr, myaddr, len, packet_format[0], 1); | |
6497 | } | |
6498 | ||
c906108c SS |
6499 | /* Read memory data directly from the remote machine. |
6500 | This does not use the data cache; the data cache uses this. | |
6501 | MEMADDR is the address in the remote memory space. | |
6502 | MYADDR is the address of the buffer in our space. | |
6503 | LEN is the number of bytes. | |
6504 | ||
6505 | Returns number of bytes transferred, or 0 for error. */ | |
6506 | ||
f7605bc2 | 6507 | static int |
cfd77fa1 | 6508 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6509 | { |
6d820c5c | 6510 | struct remote_state *rs = get_remote_state (); |
23860348 | 6511 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6512 | char *p; |
6513 | int todo; | |
6514 | int i; | |
c906108c | 6515 | |
b2182ed2 DJ |
6516 | if (len <= 0) |
6517 | return 0; | |
6518 | ||
11cf8741 | 6519 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6520 | /* The packet buffer will be large enough for the payload; |
6521 | get_memory_packet_size ensures this. */ | |
c906108c | 6522 | |
f7605bc2 PA |
6523 | /* Number if bytes that will fit. */ |
6524 | todo = min (len, max_buf_size / 2); | |
c906108c | 6525 | |
f7605bc2 PA |
6526 | /* Construct "m"<memaddr>","<len>". */ |
6527 | memaddr = remote_address_masked (memaddr); | |
6528 | p = rs->buf; | |
6529 | *p++ = 'm'; | |
6530 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6531 | *p++ = ','; | |
6532 | p += hexnumstr (p, (ULONGEST) todo); | |
6533 | *p = '\0'; | |
6534 | putpkt (rs->buf); | |
6535 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6536 | if (rs->buf[0] == 'E' | |
6537 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6538 | && rs->buf[3] == '\0') | |
6539 | { | |
6540 | /* There is no correspondance between what the remote protocol | |
6541 | uses for errors and errno codes. We would like a cleaner way | |
6542 | of representing errors (big enough to include errno codes, | |
6543 | bfd_error codes, and others). But for now just return | |
6544 | EIO. */ | |
6545 | errno = EIO; | |
6546 | return 0; | |
c906108c | 6547 | } |
f7605bc2 PA |
6548 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6549 | characters. */ | |
6550 | p = rs->buf; | |
6551 | i = hex2bin (p, myaddr, todo); | |
6552 | /* Return what we have. Let higher layers handle partial reads. */ | |
6553 | return i; | |
c906108c | 6554 | } |
74531fed PA |
6555 | \f |
6556 | ||
6557 | /* Remote notification handler. */ | |
6558 | ||
6559 | static void | |
6560 | handle_notification (char *buf, size_t length) | |
6561 | { | |
6562 | if (strncmp (buf, "Stop:", 5) == 0) | |
6563 | { | |
6564 | if (pending_stop_reply) | |
0723dbf5 PA |
6565 | { |
6566 | /* We've already parsed the in-flight stop-reply, but the | |
6567 | stub for some reason thought we didn't, possibly due to | |
6568 | timeout on its side. Just ignore it. */ | |
6569 | if (remote_debug) | |
6570 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6571 | } | |
74531fed PA |
6572 | else |
6573 | { | |
6574 | struct cleanup *old_chain; | |
6575 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6576 | |
74531fed PA |
6577 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6578 | ||
6579 | remote_parse_stop_reply (buf + 5, reply); | |
6580 | ||
6581 | discard_cleanups (old_chain); | |
6582 | ||
6583 | /* Be careful to only set it after parsing, since an error | |
6584 | may be thrown then. */ | |
6585 | pending_stop_reply = reply; | |
6586 | ||
6587 | /* Notify the event loop there's a stop reply to acknowledge | |
6588 | and that there may be more events to fetch. */ | |
6589 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6590 | |
6591 | if (remote_debug) | |
6592 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6593 | } |
6594 | } | |
6595 | else | |
6596 | /* We ignore notifications we don't recognize, for compatibility | |
6597 | with newer stubs. */ | |
6598 | ; | |
6599 | } | |
6600 | ||
c906108c SS |
6601 | \f |
6602 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6603 | transferring to or from debugger address BUFFER. Write to inferior |
6604 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6605 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6606 | |
c906108c | 6607 | static int |
961cb7b5 | 6608 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6609 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6610 | struct target_ops *target) |
c906108c | 6611 | { |
4930751a C |
6612 | int res; |
6613 | ||
e6e4e701 | 6614 | set_remote_traceframe (); |
82f73884 PA |
6615 | set_general_thread (inferior_ptid); |
6616 | ||
4930751a | 6617 | if (should_write) |
b2182ed2 | 6618 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6619 | else |
b2182ed2 | 6620 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6621 | |
6622 | return res; | |
c906108c SS |
6623 | } |
6624 | ||
a76d924d DJ |
6625 | /* Sends a packet with content determined by the printf format string |
6626 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6627 | whether the packet was a success, a failure, or unknown. */ | |
6628 | ||
2c0b251b | 6629 | static enum packet_result |
a76d924d DJ |
6630 | remote_send_printf (const char *format, ...) |
6631 | { | |
6632 | struct remote_state *rs = get_remote_state (); | |
6633 | int max_size = get_remote_packet_size (); | |
a76d924d | 6634 | va_list ap; |
a744cf53 | 6635 | |
a76d924d DJ |
6636 | va_start (ap, format); |
6637 | ||
6638 | rs->buf[0] = '\0'; | |
6639 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6640 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6641 | |
6642 | if (putpkt (rs->buf) < 0) | |
6643 | error (_("Communication problem with target.")); | |
6644 | ||
6645 | rs->buf[0] = '\0'; | |
6646 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6647 | ||
6648 | return packet_check_result (rs->buf); | |
6649 | } | |
6650 | ||
6651 | static void | |
6652 | restore_remote_timeout (void *p) | |
6653 | { | |
6654 | int value = *(int *)p; | |
a744cf53 | 6655 | |
a76d924d DJ |
6656 | remote_timeout = value; |
6657 | } | |
6658 | ||
6659 | /* Flash writing can take quite some time. We'll set | |
6660 | effectively infinite timeout for flash operations. | |
6661 | In future, we'll need to decide on a better approach. */ | |
6662 | static const int remote_flash_timeout = 1000; | |
6663 | ||
6664 | static void | |
6665 | remote_flash_erase (struct target_ops *ops, | |
6666 | ULONGEST address, LONGEST length) | |
6667 | { | |
5af949e3 | 6668 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6669 | int saved_remote_timeout = remote_timeout; |
6670 | enum packet_result ret; | |
a76d924d DJ |
6671 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6672 | &saved_remote_timeout); | |
a744cf53 | 6673 | |
a76d924d DJ |
6674 | remote_timeout = remote_flash_timeout; |
6675 | ||
6676 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6677 | phex (address, addr_size), |
a76d924d DJ |
6678 | phex (length, 4)); |
6679 | switch (ret) | |
6680 | { | |
6681 | case PACKET_UNKNOWN: | |
6682 | error (_("Remote target does not support flash erase")); | |
6683 | case PACKET_ERROR: | |
6684 | error (_("Error erasing flash with vFlashErase packet")); | |
6685 | default: | |
6686 | break; | |
6687 | } | |
6688 | ||
6689 | do_cleanups (back_to); | |
6690 | } | |
6691 | ||
6692 | static LONGEST | |
6693 | remote_flash_write (struct target_ops *ops, | |
6694 | ULONGEST address, LONGEST length, | |
6695 | const gdb_byte *data) | |
6696 | { | |
6697 | int saved_remote_timeout = remote_timeout; | |
6698 | int ret; | |
6699 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6700 | &saved_remote_timeout); | |
6701 | ||
6702 | remote_timeout = remote_flash_timeout; | |
6703 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6704 | do_cleanups (back_to); | |
6705 | ||
6706 | return ret; | |
6707 | } | |
6708 | ||
6709 | static void | |
6710 | remote_flash_done (struct target_ops *ops) | |
6711 | { | |
6712 | int saved_remote_timeout = remote_timeout; | |
6713 | int ret; | |
6714 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6715 | &saved_remote_timeout); | |
6716 | ||
6717 | remote_timeout = remote_flash_timeout; | |
6718 | ret = remote_send_printf ("vFlashDone"); | |
6719 | do_cleanups (back_to); | |
6720 | ||
6721 | switch (ret) | |
6722 | { | |
6723 | case PACKET_UNKNOWN: | |
6724 | error (_("Remote target does not support vFlashDone")); | |
6725 | case PACKET_ERROR: | |
6726 | error (_("Error finishing flash operation")); | |
6727 | default: | |
6728 | break; | |
6729 | } | |
6730 | } | |
6731 | ||
c906108c | 6732 | static void |
fba45db2 | 6733 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6734 | { |
6735 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6736 | } | |
6737 | \f | |
6738 | /* Stuff for dealing with the packets which are part of this protocol. | |
6739 | See comment at top of file for details. */ | |
6740 | ||
0876f84a | 6741 | /* Read a single character from the remote end. */ |
c906108c SS |
6742 | |
6743 | static int | |
fba45db2 | 6744 | readchar (int timeout) |
c906108c SS |
6745 | { |
6746 | int ch; | |
6747 | ||
2cd58942 | 6748 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6749 | |
2acceee2 | 6750 | if (ch >= 0) |
0876f84a | 6751 | return ch; |
2acceee2 JM |
6752 | |
6753 | switch ((enum serial_rc) ch) | |
c906108c SS |
6754 | { |
6755 | case SERIAL_EOF: | |
ce5ce7ed | 6756 | pop_target (); |
8a3fe4f8 | 6757 | error (_("Remote connection closed")); |
2acceee2 | 6758 | /* no return */ |
c906108c | 6759 | case SERIAL_ERROR: |
4ac8c4da | 6760 | pop_target (); |
3e43a32a MS |
6761 | perror_with_name (_("Remote communication error. " |
6762 | "Target disconnected.")); | |
2acceee2 | 6763 | /* no return */ |
c906108c | 6764 | case SERIAL_TIMEOUT: |
2acceee2 | 6765 | break; |
c906108c | 6766 | } |
2acceee2 | 6767 | return ch; |
c906108c SS |
6768 | } |
6769 | ||
6d820c5c DJ |
6770 | /* Send the command in *BUF to the remote machine, and read the reply |
6771 | into *BUF. Report an error if we get an error reply. Resize | |
6772 | *BUF using xrealloc if necessary to hold the result, and update | |
6773 | *SIZEOF_BUF. */ | |
c906108c SS |
6774 | |
6775 | static void | |
6d820c5c DJ |
6776 | remote_send (char **buf, |
6777 | long *sizeof_buf) | |
c906108c | 6778 | { |
6d820c5c | 6779 | putpkt (*buf); |
c2d11a7d | 6780 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6781 | |
6d820c5c DJ |
6782 | if ((*buf)[0] == 'E') |
6783 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6784 | } |
6785 | ||
6e5abd65 PA |
6786 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6787 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6788 | etc. The caller is responsible for releasing the returned | |
6789 | memory. */ | |
6790 | ||
6791 | static char * | |
6792 | escape_buffer (const char *buf, int n) | |
6793 | { | |
6794 | struct cleanup *old_chain; | |
6795 | struct ui_file *stb; | |
6796 | char *str; | |
6e5abd65 PA |
6797 | |
6798 | stb = mem_fileopen (); | |
6799 | old_chain = make_cleanup_ui_file_delete (stb); | |
6800 | ||
6801 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6802 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6803 | do_cleanups (old_chain); |
6804 | return str; | |
6805 | } | |
6806 | ||
c906108c SS |
6807 | /* Display a null-terminated packet on stdout, for debugging, using C |
6808 | string notation. */ | |
6809 | ||
6810 | static void | |
fba45db2 | 6811 | print_packet (char *buf) |
c906108c SS |
6812 | { |
6813 | puts_filtered ("\""); | |
43e526b9 | 6814 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6815 | puts_filtered ("\""); |
6816 | } | |
6817 | ||
6818 | int | |
fba45db2 | 6819 | putpkt (char *buf) |
c906108c SS |
6820 | { |
6821 | return putpkt_binary (buf, strlen (buf)); | |
6822 | } | |
6823 | ||
6824 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6825 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6826 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6827 | and for a possible /0 if we are debugging (remote_debug) and want |
6828 | to print the sent packet as a string. */ | |
c906108c SS |
6829 | |
6830 | static int | |
fba45db2 | 6831 | putpkt_binary (char *buf, int cnt) |
c906108c | 6832 | { |
2d717e4f | 6833 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6834 | int i; |
6835 | unsigned char csum = 0; | |
11cf8741 | 6836 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6837 | |
c906108c SS |
6838 | int ch; |
6839 | int tcount = 0; | |
6840 | char *p; | |
6841 | ||
e24a49d8 PA |
6842 | /* Catch cases like trying to read memory or listing threads while |
6843 | we're waiting for a stop reply. The remote server wouldn't be | |
6844 | ready to handle this request, so we'd hang and timeout. We don't | |
6845 | have to worry about this in synchronous mode, because in that | |
6846 | case it's not possible to issue a command while the target is | |
74531fed PA |
6847 | running. This is not a problem in non-stop mode, because in that |
6848 | case, the stub is always ready to process serial input. */ | |
6849 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6850 | error (_("Cannot execute this command while the target is running.")); |
6851 | ||
2d717e4f DJ |
6852 | /* We're sending out a new packet. Make sure we don't look at a |
6853 | stale cached response. */ | |
6854 | rs->cached_wait_status = 0; | |
6855 | ||
c906108c SS |
6856 | /* Copy the packet into buffer BUF2, encapsulating it |
6857 | and giving it a checksum. */ | |
6858 | ||
c906108c SS |
6859 | p = buf2; |
6860 | *p++ = '$'; | |
6861 | ||
6862 | for (i = 0; i < cnt; i++) | |
6863 | { | |
6864 | csum += buf[i]; | |
6865 | *p++ = buf[i]; | |
6866 | } | |
6867 | *p++ = '#'; | |
6868 | *p++ = tohex ((csum >> 4) & 0xf); | |
6869 | *p++ = tohex (csum & 0xf); | |
6870 | ||
6871 | /* Send it over and over until we get a positive ack. */ | |
6872 | ||
6873 | while (1) | |
6874 | { | |
6875 | int started_error_output = 0; | |
6876 | ||
6877 | if (remote_debug) | |
6878 | { | |
6e5abd65 PA |
6879 | struct cleanup *old_chain; |
6880 | char *str; | |
6881 | ||
c906108c | 6882 | *p = '\0'; |
6e5abd65 PA |
6883 | str = escape_buffer (buf2, p - buf2); |
6884 | old_chain = make_cleanup (xfree, str); | |
6885 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6886 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6887 | do_cleanups (old_chain); |
c906108c | 6888 | } |
2cd58942 | 6889 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6890 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6891 | |
a6f3e723 SL |
6892 | /* If this is a no acks version of the remote protocol, send the |
6893 | packet and move on. */ | |
6894 | if (rs->noack_mode) | |
6895 | break; | |
6896 | ||
74531fed PA |
6897 | /* Read until either a timeout occurs (-2) or '+' is read. |
6898 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6899 | while (1) |
6900 | { | |
6901 | ch = readchar (remote_timeout); | |
6902 | ||
c5aa993b | 6903 | if (remote_debug) |
c906108c SS |
6904 | { |
6905 | switch (ch) | |
6906 | { | |
6907 | case '+': | |
1216fa2c | 6908 | case '-': |
c906108c SS |
6909 | case SERIAL_TIMEOUT: |
6910 | case '$': | |
74531fed | 6911 | case '%': |
c906108c SS |
6912 | if (started_error_output) |
6913 | { | |
6914 | putchar_unfiltered ('\n'); | |
6915 | started_error_output = 0; | |
6916 | } | |
6917 | } | |
6918 | } | |
6919 | ||
6920 | switch (ch) | |
6921 | { | |
6922 | case '+': | |
6923 | if (remote_debug) | |
0f71a2f6 | 6924 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6925 | return 1; |
1216fa2c AC |
6926 | case '-': |
6927 | if (remote_debug) | |
6928 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 6929 | /* FALLTHROUGH */ |
c906108c | 6930 | case SERIAL_TIMEOUT: |
c5aa993b | 6931 | tcount++; |
c906108c SS |
6932 | if (tcount > 3) |
6933 | return 0; | |
23860348 | 6934 | break; /* Retransmit buffer. */ |
c906108c SS |
6935 | case '$': |
6936 | { | |
40e3f985 | 6937 | if (remote_debug) |
2bc416ba | 6938 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6939 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6940 | /* It's probably an old response sent because an ACK |
6941 | was lost. Gobble up the packet and ack it so it | |
6942 | doesn't get retransmitted when we resend this | |
6943 | packet. */ | |
6d820c5c | 6944 | skip_frame (); |
d6f7abdf | 6945 | serial_write (remote_desc, "+", 1); |
23860348 | 6946 | continue; /* Now, go look for +. */ |
c906108c | 6947 | } |
74531fed PA |
6948 | |
6949 | case '%': | |
6950 | { | |
6951 | int val; | |
6952 | ||
6953 | /* If we got a notification, handle it, and go back to looking | |
6954 | for an ack. */ | |
6955 | /* We've found the start of a notification. Now | |
6956 | collect the data. */ | |
6957 | val = read_frame (&rs->buf, &rs->buf_size); | |
6958 | if (val >= 0) | |
6959 | { | |
6960 | if (remote_debug) | |
6961 | { | |
6e5abd65 PA |
6962 | struct cleanup *old_chain; |
6963 | char *str; | |
6964 | ||
6965 | str = escape_buffer (rs->buf, val); | |
6966 | old_chain = make_cleanup (xfree, str); | |
6967 | fprintf_unfiltered (gdb_stdlog, | |
6968 | " Notification received: %s\n", | |
6969 | str); | |
6970 | do_cleanups (old_chain); | |
74531fed PA |
6971 | } |
6972 | handle_notification (rs->buf, val); | |
6973 | /* We're in sync now, rewait for the ack. */ | |
6974 | tcount = 0; | |
6975 | } | |
6976 | else | |
6977 | { | |
6978 | if (remote_debug) | |
6979 | { | |
6980 | if (!started_error_output) | |
6981 | { | |
6982 | started_error_output = 1; | |
6983 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
6984 | } | |
6985 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
6986 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
6987 | } | |
6988 | } | |
6989 | continue; | |
6990 | } | |
6991 | /* fall-through */ | |
c906108c SS |
6992 | default: |
6993 | if (remote_debug) | |
6994 | { | |
6995 | if (!started_error_output) | |
6996 | { | |
6997 | started_error_output = 1; | |
0f71a2f6 | 6998 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 6999 | } |
0f71a2f6 | 7000 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7001 | } |
7002 | continue; | |
7003 | } | |
23860348 | 7004 | break; /* Here to retransmit. */ |
c906108c SS |
7005 | } |
7006 | ||
7007 | #if 0 | |
7008 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7009 | able to get out next time we call QUIT, without anything as |
7010 | violent as interrupt_query. If we want to provide a way out of | |
7011 | here without getting to the next QUIT, it should be based on | |
7012 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7013 | if (quit_flag) |
7014 | { | |
7015 | quit_flag = 0; | |
7016 | interrupt_query (); | |
7017 | } | |
7018 | #endif | |
7019 | } | |
a6f3e723 | 7020 | return 0; |
c906108c SS |
7021 | } |
7022 | ||
6d820c5c DJ |
7023 | /* Come here after finding the start of a frame when we expected an |
7024 | ack. Do our best to discard the rest of this packet. */ | |
7025 | ||
7026 | static void | |
7027 | skip_frame (void) | |
7028 | { | |
7029 | int c; | |
7030 | ||
7031 | while (1) | |
7032 | { | |
7033 | c = readchar (remote_timeout); | |
7034 | switch (c) | |
7035 | { | |
7036 | case SERIAL_TIMEOUT: | |
7037 | /* Nothing we can do. */ | |
7038 | return; | |
7039 | case '#': | |
7040 | /* Discard the two bytes of checksum and stop. */ | |
7041 | c = readchar (remote_timeout); | |
7042 | if (c >= 0) | |
7043 | c = readchar (remote_timeout); | |
7044 | ||
7045 | return; | |
7046 | case '*': /* Run length encoding. */ | |
7047 | /* Discard the repeat count. */ | |
7048 | c = readchar (remote_timeout); | |
7049 | if (c < 0) | |
7050 | return; | |
7051 | break; | |
7052 | default: | |
7053 | /* A regular character. */ | |
7054 | break; | |
7055 | } | |
7056 | } | |
7057 | } | |
7058 | ||
c906108c | 7059 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7060 | into *BUF, verifying the checksum, length, and handling run-length |
7061 | compression. NUL terminate the buffer. If there is not enough room, | |
7062 | expand *BUF using xrealloc. | |
c906108c | 7063 | |
c2d11a7d JM |
7064 | Returns -1 on error, number of characters in buffer (ignoring the |
7065 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7066 | SERIAL status indications). */ |
c2d11a7d JM |
7067 | |
7068 | static long | |
6d820c5c DJ |
7069 | read_frame (char **buf_p, |
7070 | long *sizeof_buf) | |
c906108c SS |
7071 | { |
7072 | unsigned char csum; | |
c2d11a7d | 7073 | long bc; |
c906108c | 7074 | int c; |
6d820c5c | 7075 | char *buf = *buf_p; |
a6f3e723 | 7076 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7077 | |
7078 | csum = 0; | |
c2d11a7d | 7079 | bc = 0; |
c906108c SS |
7080 | |
7081 | while (1) | |
7082 | { | |
7083 | c = readchar (remote_timeout); | |
c906108c SS |
7084 | switch (c) |
7085 | { | |
7086 | case SERIAL_TIMEOUT: | |
7087 | if (remote_debug) | |
0f71a2f6 | 7088 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7089 | return -1; |
c906108c SS |
7090 | case '$': |
7091 | if (remote_debug) | |
0f71a2f6 JM |
7092 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7093 | gdb_stdlog); | |
23860348 | 7094 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7095 | case '#': |
7096 | { | |
7097 | unsigned char pktcsum; | |
e1b09194 AC |
7098 | int check_0 = 0; |
7099 | int check_1 = 0; | |
c906108c | 7100 | |
c2d11a7d | 7101 | buf[bc] = '\0'; |
c906108c | 7102 | |
e1b09194 AC |
7103 | check_0 = readchar (remote_timeout); |
7104 | if (check_0 >= 0) | |
7105 | check_1 = readchar (remote_timeout); | |
802188a7 | 7106 | |
e1b09194 AC |
7107 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7108 | { | |
7109 | if (remote_debug) | |
2bc416ba | 7110 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7111 | gdb_stdlog); |
e1b09194 AC |
7112 | return -1; |
7113 | } | |
7114 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7115 | { |
7116 | if (remote_debug) | |
2bc416ba | 7117 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7118 | gdb_stdlog); |
40e3f985 FN |
7119 | return -1; |
7120 | } | |
c906108c | 7121 | |
a6f3e723 SL |
7122 | /* Don't recompute the checksum; with no ack packets we |
7123 | don't have any way to indicate a packet retransmission | |
7124 | is necessary. */ | |
7125 | if (rs->noack_mode) | |
7126 | return bc; | |
7127 | ||
e1b09194 | 7128 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7129 | if (csum == pktcsum) |
c2d11a7d | 7130 | return bc; |
c906108c | 7131 | |
c5aa993b | 7132 | if (remote_debug) |
c906108c | 7133 | { |
6e5abd65 PA |
7134 | struct cleanup *old_chain; |
7135 | char *str; | |
7136 | ||
7137 | str = escape_buffer (buf, bc); | |
7138 | old_chain = make_cleanup (xfree, str); | |
7139 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7140 | "Bad checksum, sentsum=0x%x, " |
7141 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7142 | pktcsum, csum, str); |
7143 | do_cleanups (old_chain); | |
c906108c | 7144 | } |
c2d11a7d | 7145 | /* Number of characters in buffer ignoring trailing |
23860348 | 7146 | NULL. */ |
c2d11a7d | 7147 | return -1; |
c906108c | 7148 | } |
23860348 | 7149 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7150 | { |
7151 | int repeat; | |
c906108c | 7152 | |
a744cf53 | 7153 | csum += c; |
b4501125 AC |
7154 | c = readchar (remote_timeout); |
7155 | csum += c; | |
23860348 | 7156 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7157 | |
23860348 | 7158 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7159 | |
6d820c5c | 7160 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7161 | { |
6d820c5c DJ |
7162 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7163 | { | |
7164 | /* Make some more room in the buffer. */ | |
7165 | *sizeof_buf += repeat; | |
7166 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7167 | buf = *buf_p; | |
7168 | } | |
7169 | ||
c2d11a7d JM |
7170 | memset (&buf[bc], buf[bc - 1], repeat); |
7171 | bc += repeat; | |
c2c6d25f JM |
7172 | continue; |
7173 | } | |
7174 | ||
c2d11a7d | 7175 | buf[bc] = '\0'; |
6d820c5c | 7176 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7177 | return -1; |
c2c6d25f | 7178 | } |
c906108c | 7179 | default: |
6d820c5c | 7180 | if (bc >= *sizeof_buf - 1) |
c906108c | 7181 | { |
6d820c5c DJ |
7182 | /* Make some more room in the buffer. */ |
7183 | *sizeof_buf *= 2; | |
7184 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7185 | buf = *buf_p; | |
c906108c SS |
7186 | } |
7187 | ||
6d820c5c DJ |
7188 | buf[bc++] = c; |
7189 | csum += c; | |
7190 | continue; | |
c906108c SS |
7191 | } |
7192 | } | |
7193 | } | |
7194 | ||
7195 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7196 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7197 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7198 | rather than timing out; this is used (in synchronous mode) to wait | |
7199 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7200 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7201 | don't have to change all the calls to getpkt to deal with the | |
7202 | return value, because at the moment I don't know what the right | |
23860348 | 7203 | thing to do it for those. */ |
c906108c | 7204 | void |
6d820c5c DJ |
7205 | getpkt (char **buf, |
7206 | long *sizeof_buf, | |
c2d11a7d | 7207 | int forever) |
d9fcf2fb JM |
7208 | { |
7209 | int timed_out; | |
7210 | ||
7211 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7212 | } | |
7213 | ||
7214 | ||
7215 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7216 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7217 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7218 | rather than timing out; this is used (in synchronous mode) to wait | |
7219 | for a target that is is executing user code to stop. If FOREVER == | |
7220 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7221 | indication of this to the caller. Otherwise return the number of |
7222 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7223 | enough reason to return to the caller. */ | |
7224 | ||
3172dc30 | 7225 | static int |
74531fed PA |
7226 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7227 | int expecting_notif) | |
c906108c | 7228 | { |
2d717e4f | 7229 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7230 | int c; |
7231 | int tries; | |
7232 | int timeout; | |
df4b58fe | 7233 | int val = -1; |
c906108c | 7234 | |
2d717e4f DJ |
7235 | /* We're reading a new response. Make sure we don't look at a |
7236 | previously cached response. */ | |
7237 | rs->cached_wait_status = 0; | |
7238 | ||
6d820c5c | 7239 | strcpy (*buf, "timeout"); |
c906108c SS |
7240 | |
7241 | if (forever) | |
74531fed PA |
7242 | timeout = watchdog > 0 ? watchdog : -1; |
7243 | else if (expecting_notif) | |
7244 | timeout = 0; /* There should already be a char in the buffer. If | |
7245 | not, bail out. */ | |
c906108c SS |
7246 | else |
7247 | timeout = remote_timeout; | |
7248 | ||
7249 | #define MAX_TRIES 3 | |
7250 | ||
74531fed PA |
7251 | /* Process any number of notifications, and then return when |
7252 | we get a packet. */ | |
7253 | for (;;) | |
c906108c | 7254 | { |
74531fed PA |
7255 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7256 | times. */ | |
7257 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7258 | { |
74531fed PA |
7259 | /* This can loop forever if the remote side sends us |
7260 | characters continuously, but if it pauses, we'll get | |
7261 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7262 | we'll count that as a retry. | |
7263 | ||
7264 | Note that even when forever is set, we will only wait | |
7265 | forever prior to the start of a packet. After that, we | |
7266 | expect characters to arrive at a brisk pace. They should | |
7267 | show up within remote_timeout intervals. */ | |
7268 | do | |
7269 | c = readchar (timeout); | |
7270 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7271 | |
7272 | if (c == SERIAL_TIMEOUT) | |
7273 | { | |
74531fed PA |
7274 | if (expecting_notif) |
7275 | return -1; /* Don't complain, it's normal to not get | |
7276 | anything in this case. */ | |
7277 | ||
23860348 | 7278 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7279 | { |
2acceee2 | 7280 | QUIT; |
ce5ce7ed | 7281 | pop_target (); |
489eaeba | 7282 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7283 | } |
c906108c | 7284 | if (remote_debug) |
0f71a2f6 | 7285 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7286 | } |
74531fed PA |
7287 | else |
7288 | { | |
7289 | /* We've found the start of a packet or notification. | |
7290 | Now collect the data. */ | |
7291 | val = read_frame (buf, sizeof_buf); | |
7292 | if (val >= 0) | |
7293 | break; | |
7294 | } | |
7295 | ||
7296 | serial_write (remote_desc, "-", 1); | |
c906108c | 7297 | } |
c906108c | 7298 | |
74531fed PA |
7299 | if (tries > MAX_TRIES) |
7300 | { | |
7301 | /* We have tried hard enough, and just can't receive the | |
7302 | packet/notification. Give up. */ | |
7303 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7304 | |
74531fed PA |
7305 | /* Skip the ack char if we're in no-ack mode. */ |
7306 | if (!rs->noack_mode) | |
7307 | serial_write (remote_desc, "+", 1); | |
7308 | return -1; | |
7309 | } | |
c906108c | 7310 | |
74531fed PA |
7311 | /* If we got an ordinary packet, return that to our caller. */ |
7312 | if (c == '$') | |
c906108c SS |
7313 | { |
7314 | if (remote_debug) | |
43e526b9 | 7315 | { |
6e5abd65 PA |
7316 | struct cleanup *old_chain; |
7317 | char *str; | |
7318 | ||
7319 | str = escape_buffer (*buf, val); | |
7320 | old_chain = make_cleanup (xfree, str); | |
7321 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7322 | do_cleanups (old_chain); | |
43e526b9 | 7323 | } |
a6f3e723 SL |
7324 | |
7325 | /* Skip the ack char if we're in no-ack mode. */ | |
7326 | if (!rs->noack_mode) | |
7327 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7328 | return val; |
c906108c SS |
7329 | } |
7330 | ||
74531fed PA |
7331 | /* If we got a notification, handle it, and go back to looking |
7332 | for a packet. */ | |
7333 | else | |
7334 | { | |
7335 | gdb_assert (c == '%'); | |
7336 | ||
7337 | if (remote_debug) | |
7338 | { | |
6e5abd65 PA |
7339 | struct cleanup *old_chain; |
7340 | char *str; | |
7341 | ||
7342 | str = escape_buffer (*buf, val); | |
7343 | old_chain = make_cleanup (xfree, str); | |
7344 | fprintf_unfiltered (gdb_stdlog, | |
7345 | " Notification received: %s\n", | |
7346 | str); | |
7347 | do_cleanups (old_chain); | |
74531fed | 7348 | } |
c906108c | 7349 | |
74531fed | 7350 | handle_notification (*buf, val); |
c906108c | 7351 | |
74531fed | 7352 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7353 | |
74531fed PA |
7354 | if (expecting_notif) |
7355 | return -1; | |
7356 | } | |
7357 | } | |
7358 | } | |
7359 | ||
7360 | static int | |
7361 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7362 | { | |
7363 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7364 | } | |
7365 | ||
7366 | static int | |
7367 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7368 | { | |
7369 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7370 | } |
74531fed | 7371 | |
c906108c | 7372 | \f |
732f3f12 TT |
7373 | /* A helper function that just calls putpkt; for type correctness. */ |
7374 | ||
7375 | static int | |
7376 | putpkt_for_catch_errors (void *arg) | |
7377 | { | |
7378 | return putpkt (arg); | |
7379 | } | |
7380 | ||
c906108c | 7381 | static void |
7d85a9c0 | 7382 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7383 | { |
23860348 MS |
7384 | /* Use catch_errors so the user can quit from gdb even when we |
7385 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7386 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7387 | |
7388 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7389 | we do or not. For the existing stubs, kill is a noop. */ | |
7390 | target_mourn_inferior (); | |
7391 | } | |
7392 | ||
82f73884 PA |
7393 | static int |
7394 | remote_vkill (int pid, struct remote_state *rs) | |
7395 | { | |
7396 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7397 | return -1; | |
7398 | ||
7399 | /* Tell the remote target to detach. */ | |
7400 | sprintf (rs->buf, "vKill;%x", pid); | |
7401 | putpkt (rs->buf); | |
7402 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7403 | ||
7404 | if (packet_ok (rs->buf, | |
7405 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7406 | return 0; | |
7407 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7408 | return -1; | |
7409 | else | |
7410 | return 1; | |
7411 | } | |
7412 | ||
7413 | static void | |
7d85a9c0 | 7414 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7415 | { |
7416 | int res; | |
7417 | int pid = ptid_get_pid (inferior_ptid); | |
7418 | struct remote_state *rs = get_remote_state (); | |
7419 | ||
7420 | res = remote_vkill (pid, rs); | |
7421 | if (res == -1 && !remote_multi_process_p (rs)) | |
7422 | { | |
7423 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7424 | to specify the pid. */ | |
7425 | ||
7426 | putpkt ("k"); | |
7427 | #if 0 | |
7428 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7429 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7430 | res = 1; | |
7431 | #else | |
7432 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7433 | we do or not. For the existing stubs, kill is a noop. */ | |
7434 | res = 0; | |
7435 | #endif | |
7436 | } | |
7437 | ||
7438 | if (res != 0) | |
7439 | error (_("Can't kill process")); | |
7440 | ||
82f73884 PA |
7441 | target_mourn_inferior (); |
7442 | } | |
7443 | ||
c906108c | 7444 | static void |
136d6dae | 7445 | remote_mourn (struct target_ops *ops) |
c906108c | 7446 | { |
136d6dae | 7447 | remote_mourn_1 (ops); |
c906108c SS |
7448 | } |
7449 | ||
c906108c SS |
7450 | /* Worker function for remote_mourn. */ |
7451 | static void | |
fba45db2 | 7452 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7453 | { |
7454 | unpush_target (target); | |
ce5ce7ed | 7455 | |
8a2492ee PA |
7456 | /* remote_close takes care of doing most of the clean up. */ |
7457 | generic_mourn_inferior (); | |
c906108c SS |
7458 | } |
7459 | ||
2d717e4f DJ |
7460 | static void |
7461 | extended_remote_mourn_1 (struct target_ops *target) | |
7462 | { | |
7463 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7464 | |
e24a49d8 PA |
7465 | /* In case we got here due to an error, but we're going to stay |
7466 | connected. */ | |
7467 | rs->waiting_for_stop_reply = 0; | |
7468 | ||
74531fed PA |
7469 | /* We're no longer interested in these events. */ |
7470 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7471 | ||
dc1981d7 PA |
7472 | /* If the current general thread belonged to the process we just |
7473 | detached from or has exited, the remote side current general | |
7474 | thread becomes undefined. Considering a case like this: | |
7475 | ||
7476 | - We just got here due to a detach. | |
7477 | - The process that we're detaching from happens to immediately | |
7478 | report a global breakpoint being hit in non-stop mode, in the | |
7479 | same thread we had selected before. | |
7480 | - GDB attaches to this process again. | |
7481 | - This event happens to be the next event we handle. | |
7482 | ||
7483 | GDB would consider that the current general thread didn't need to | |
7484 | be set on the stub side (with Hg), since for all it knew, | |
7485 | GENERAL_THREAD hadn't changed. | |
7486 | ||
7487 | Notice that although in all-stop mode, the remote server always | |
7488 | sets the current thread to the thread reporting the stop event, | |
7489 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7490 | not* change the current thread when reporting a breakpoint hit, | |
7491 | due to the decoupling of event reporting and event handling. | |
7492 | ||
7493 | To keep things simple, we always invalidate our notion of the | |
7494 | current thread. */ | |
7495 | record_currthread (minus_one_ptid); | |
7496 | ||
2d717e4f DJ |
7497 | /* Unlike "target remote", we do not want to unpush the target; then |
7498 | the next time the user says "run", we won't be connected. */ | |
7499 | ||
48aa3c27 PA |
7500 | /* Call common code to mark the inferior as not running. */ |
7501 | generic_mourn_inferior (); | |
7502 | ||
d729566a | 7503 | if (!have_inferiors ()) |
2d717e4f | 7504 | { |
82f73884 PA |
7505 | if (!remote_multi_process_p (rs)) |
7506 | { | |
7507 | /* Check whether the target is running now - some remote stubs | |
7508 | automatically restart after kill. */ | |
7509 | putpkt ("?"); | |
7510 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7511 | ||
7512 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7513 | { | |
3e43a32a MS |
7514 | /* Assume that the target has been restarted. Set |
7515 | inferior_ptid so that bits of core GDB realizes | |
7516 | there's something here, e.g., so that the user can | |
7517 | say "kill" again. */ | |
82f73884 PA |
7518 | inferior_ptid = magic_null_ptid; |
7519 | } | |
82f73884 | 7520 | } |
2d717e4f DJ |
7521 | } |
7522 | } | |
c906108c SS |
7523 | |
7524 | static void | |
136d6dae | 7525 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7526 | { |
136d6dae | 7527 | extended_remote_mourn_1 (ops); |
2d717e4f | 7528 | } |
c906108c | 7529 | |
03583c20 UW |
7530 | static int |
7531 | extended_remote_supports_disable_randomization (void) | |
7532 | { | |
7533 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7534 | == PACKET_ENABLE); | |
7535 | } | |
7536 | ||
7537 | static void | |
7538 | extended_remote_disable_randomization (int val) | |
7539 | { | |
7540 | struct remote_state *rs = get_remote_state (); | |
7541 | char *reply; | |
7542 | ||
7543 | sprintf (rs->buf, "QDisableRandomization:%x", val); | |
7544 | putpkt (rs->buf); | |
7545 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7546 | if (*reply == '\0') | |
7547 | error (_("Target does not support QDisableRandomization.")); | |
7548 | if (strcmp (reply, "OK") != 0) | |
7549 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7550 | } | |
7551 | ||
2d717e4f DJ |
7552 | static int |
7553 | extended_remote_run (char *args) | |
7554 | { | |
7555 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7556 | int len; |
c906108c | 7557 | |
2d717e4f DJ |
7558 | /* If the user has disabled vRun support, or we have detected that |
7559 | support is not available, do not try it. */ | |
7560 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7561 | return -1; | |
424163ea | 7562 | |
2d717e4f DJ |
7563 | strcpy (rs->buf, "vRun;"); |
7564 | len = strlen (rs->buf); | |
c906108c | 7565 | |
2d717e4f DJ |
7566 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7567 | error (_("Remote file name too long for run packet")); | |
7568 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7569 | ||
d1a41061 | 7570 | gdb_assert (args != NULL); |
2d717e4f DJ |
7571 | if (*args) |
7572 | { | |
7573 | struct cleanup *back_to; | |
7574 | int i; | |
7575 | char **argv; | |
7576 | ||
d1a41061 | 7577 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7578 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7579 | for (i = 0; argv[i] != NULL; i++) | |
7580 | { | |
7581 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7582 | error (_("Argument list too long for run packet")); | |
7583 | rs->buf[len++] = ';'; | |
7584 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7585 | } | |
7586 | do_cleanups (back_to); | |
7587 | } | |
7588 | ||
7589 | rs->buf[len++] = '\0'; | |
7590 | ||
7591 | putpkt (rs->buf); | |
7592 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7593 | ||
7594 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7595 | { | |
7596 | /* We have a wait response; we don't need it, though. All is well. */ | |
7597 | return 0; | |
7598 | } | |
7599 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7600 | /* It wasn't disabled before, but it is now. */ | |
7601 | return -1; | |
7602 | else | |
7603 | { | |
7604 | if (remote_exec_file[0] == '\0') | |
7605 | error (_("Running the default executable on the remote target failed; " | |
7606 | "try \"set remote exec-file\"?")); | |
7607 | else | |
7608 | error (_("Running \"%s\" on the remote target failed"), | |
7609 | remote_exec_file); | |
7610 | } | |
c906108c SS |
7611 | } |
7612 | ||
2d717e4f DJ |
7613 | /* In the extended protocol we want to be able to do things like |
7614 | "run" and have them basically work as expected. So we need | |
7615 | a special create_inferior function. We support changing the | |
7616 | executable file and the command line arguments, but not the | |
7617 | environment. */ | |
7618 | ||
43ff13b4 | 7619 | static void |
2d717e4f | 7620 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7621 | char **env, int from_tty) |
43ff13b4 | 7622 | { |
43ff13b4 | 7623 | /* If running asynchronously, register the target file descriptor |
23860348 | 7624 | with the event loop. */ |
75c99385 | 7625 | if (target_can_async_p ()) |
2acceee2 | 7626 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7627 | |
03583c20 UW |
7628 | /* Disable address space randomization if requested (and supported). */ |
7629 | if (extended_remote_supports_disable_randomization ()) | |
7630 | extended_remote_disable_randomization (disable_randomization); | |
7631 | ||
43ff13b4 | 7632 | /* Now restart the remote server. */ |
2d717e4f DJ |
7633 | if (extended_remote_run (args) == -1) |
7634 | { | |
7635 | /* vRun was not supported. Fail if we need it to do what the | |
7636 | user requested. */ | |
7637 | if (remote_exec_file[0]) | |
7638 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7639 | if (args[0]) | |
7640 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7641 | |
2d717e4f DJ |
7642 | /* Fall back to "R". */ |
7643 | extended_remote_restart (); | |
7644 | } | |
424163ea | 7645 | |
6c95b8df PA |
7646 | if (!have_inferiors ()) |
7647 | { | |
7648 | /* Clean up from the last time we ran, before we mark the target | |
7649 | running again. This will mark breakpoints uninserted, and | |
7650 | get_offsets may insert breakpoints. */ | |
7651 | init_thread_list (); | |
7652 | init_wait_for_inferior (); | |
7653 | } | |
45280a52 | 7654 | |
2d717e4f | 7655 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 7656 | inferior_ptid = magic_null_ptid; |
c0a2216e | 7657 | |
74531fed PA |
7658 | /* Now, if we have thread information, update inferior_ptid. */ |
7659 | inferior_ptid = remote_current_thread (inferior_ptid); | |
7660 | ||
0b16c5cf | 7661 | remote_add_inferior (ptid_get_pid (inferior_ptid), 0); |
c0a2216e PA |
7662 | add_thread_silent (inferior_ptid); |
7663 | ||
2d717e4f DJ |
7664 | /* Get updated offsets, if the stub uses qOffsets. */ |
7665 | get_offsets (); | |
2d717e4f DJ |
7666 | } |
7667 | ||
7668 | static void | |
136d6dae VP |
7669 | extended_remote_create_inferior (struct target_ops *ops, |
7670 | char *exec_file, char *args, | |
2d717e4f DJ |
7671 | char **env, int from_tty) |
7672 | { | |
75c99385 | 7673 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7674 | } |
c906108c | 7675 | \f |
c5aa993b | 7676 | |
8181d85f DJ |
7677 | /* Insert a breakpoint. On targets that have software breakpoint |
7678 | support, we ask the remote target to do the work; on targets | |
7679 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7680 | |
7681 | static int | |
a6d9a66e UW |
7682 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7683 | struct bp_target_info *bp_tgt) | |
c906108c | 7684 | { |
d471ea57 AC |
7685 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7686 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7687 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7688 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7689 | |
444abaca | 7690 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7691 | { |
7c0f6dcc | 7692 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7693 | struct remote_state *rs; |
7694 | char *p; | |
7c0f6dcc | 7695 | int bpsize; |
4fff2411 | 7696 | |
a1dcb23a | 7697 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7698 | |
7699 | rs = get_remote_state (); | |
7700 | p = rs->buf; | |
802188a7 | 7701 | |
96baa820 JM |
7702 | *(p++) = 'Z'; |
7703 | *(p++) = '0'; | |
7704 | *(p++) = ','; | |
7c0f6dcc | 7705 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7706 | p += hexnumstr (p, addr); |
7c0f6dcc | 7707 | sprintf (p, ",%d", bpsize); |
802188a7 | 7708 | |
6d820c5c DJ |
7709 | putpkt (rs->buf); |
7710 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7711 | |
6d820c5c | 7712 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7713 | { |
d471ea57 AC |
7714 | case PACKET_ERROR: |
7715 | return -1; | |
7716 | case PACKET_OK: | |
7c0f6dcc JL |
7717 | bp_tgt->placed_address = addr; |
7718 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7719 | return 0; |
7720 | case PACKET_UNKNOWN: | |
7721 | break; | |
96baa820 JM |
7722 | } |
7723 | } | |
c906108c | 7724 | |
a6d9a66e | 7725 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7726 | } |
7727 | ||
7728 | static int | |
a6d9a66e UW |
7729 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7730 | struct bp_target_info *bp_tgt) | |
c906108c | 7731 | { |
8181d85f | 7732 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7733 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7734 | |
444abaca | 7735 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7736 | { |
6d820c5c | 7737 | char *p = rs->buf; |
802188a7 | 7738 | |
96baa820 JM |
7739 | *(p++) = 'z'; |
7740 | *(p++) = '0'; | |
7741 | *(p++) = ','; | |
7742 | ||
8181d85f DJ |
7743 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7744 | p += hexnumstr (p, addr); | |
7745 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7746 | |
6d820c5c DJ |
7747 | putpkt (rs->buf); |
7748 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7749 | |
6d820c5c | 7750 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7751 | } |
7752 | ||
a6d9a66e | 7753 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7754 | } |
7755 | ||
d471ea57 AC |
7756 | static int |
7757 | watchpoint_to_Z_packet (int type) | |
7758 | { | |
7759 | switch (type) | |
7760 | { | |
7761 | case hw_write: | |
bb858e6a | 7762 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7763 | break; |
7764 | case hw_read: | |
bb858e6a | 7765 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7766 | break; |
7767 | case hw_access: | |
bb858e6a | 7768 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7769 | break; |
7770 | default: | |
8e65ff28 | 7771 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7772 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7773 | } |
7774 | } | |
7775 | ||
3c3bea1c | 7776 | static int |
0cf6dd15 TJB |
7777 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7778 | struct expression *cond) | |
96baa820 | 7779 | { |
d01949b6 | 7780 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7781 | char *p; |
d471ea57 | 7782 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7783 | |
444abaca | 7784 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7785 | return 1; |
802188a7 | 7786 | |
6d820c5c DJ |
7787 | sprintf (rs->buf, "Z%x,", packet); |
7788 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7789 | addr = remote_address_masked (addr); |
7790 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7791 | sprintf (p, ",%x", len); |
802188a7 | 7792 | |
6d820c5c DJ |
7793 | putpkt (rs->buf); |
7794 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7795 | |
6d820c5c | 7796 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7797 | { |
7798 | case PACKET_ERROR: | |
d471ea57 | 7799 | return -1; |
85d721b8 PA |
7800 | case PACKET_UNKNOWN: |
7801 | return 1; | |
d471ea57 AC |
7802 | case PACKET_OK: |
7803 | return 0; | |
7804 | } | |
8e65ff28 | 7805 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7806 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7807 | } |
7808 | ||
d471ea57 | 7809 | |
3c3bea1c | 7810 | static int |
0cf6dd15 TJB |
7811 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
7812 | struct expression *cond) | |
96baa820 | 7813 | { |
d01949b6 | 7814 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7815 | char *p; |
d471ea57 AC |
7816 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7817 | ||
444abaca | 7818 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 7819 | return -1; |
802188a7 | 7820 | |
6d820c5c DJ |
7821 | sprintf (rs->buf, "z%x,", packet); |
7822 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7823 | addr = remote_address_masked (addr); |
7824 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7825 | sprintf (p, ",%x", len); |
6d820c5c DJ |
7826 | putpkt (rs->buf); |
7827 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7828 | |
6d820c5c | 7829 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7830 | { |
7831 | case PACKET_ERROR: | |
7832 | case PACKET_UNKNOWN: | |
7833 | return -1; | |
7834 | case PACKET_OK: | |
7835 | return 0; | |
7836 | } | |
8e65ff28 | 7837 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7838 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7839 | } |
7840 | ||
3c3bea1c | 7841 | |
501eef12 | 7842 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 7843 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 7844 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 7845 | |
480a3f21 PW |
7846 | static int |
7847 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
7848 | { | |
7849 | if (remote_hw_watchpoint_length_limit == 0) | |
7850 | return 0; | |
7851 | else if (remote_hw_watchpoint_length_limit < 0) | |
7852 | return 1; | |
7853 | else if (len <= remote_hw_watchpoint_length_limit) | |
7854 | return 1; | |
7855 | else | |
7856 | return 0; | |
7857 | } | |
7858 | ||
b9362cc7 | 7859 | static int |
3c3bea1c | 7860 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7861 | { |
3c3bea1c GS |
7862 | if (type == bp_hardware_breakpoint) |
7863 | { | |
7864 | if (remote_hw_breakpoint_limit == 0) | |
7865 | return 0; | |
501eef12 AC |
7866 | else if (remote_hw_breakpoint_limit < 0) |
7867 | return 1; | |
3c3bea1c GS |
7868 | else if (cnt <= remote_hw_breakpoint_limit) |
7869 | return 1; | |
7870 | } | |
7871 | else | |
7872 | { | |
7873 | if (remote_hw_watchpoint_limit == 0) | |
7874 | return 0; | |
501eef12 AC |
7875 | else if (remote_hw_watchpoint_limit < 0) |
7876 | return 1; | |
3c3bea1c GS |
7877 | else if (ot) |
7878 | return -1; | |
7879 | else if (cnt <= remote_hw_watchpoint_limit) | |
7880 | return 1; | |
7881 | } | |
7882 | return -1; | |
7883 | } | |
7884 | ||
b9362cc7 | 7885 | static int |
3c3bea1c GS |
7886 | remote_stopped_by_watchpoint (void) |
7887 | { | |
82f73884 | 7888 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7889 | } |
7890 | ||
4aa7a7f5 JJ |
7891 | static int |
7892 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7893 | { |
4aa7a7f5 | 7894 | int rc = 0; |
a744cf53 | 7895 | |
d983da9c | 7896 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7897 | { |
7898 | *addr_p = remote_watch_data_address; | |
7899 | rc = 1; | |
7900 | } | |
7901 | ||
7902 | return rc; | |
3c3bea1c GS |
7903 | } |
7904 | ||
7905 | ||
7906 | static int | |
a6d9a66e UW |
7907 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
7908 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 7909 | { |
8181d85f | 7910 | CORE_ADDR addr; |
4fff2411 JZ |
7911 | struct remote_state *rs; |
7912 | char *p; | |
802188a7 | 7913 | |
c8189ed1 | 7914 | /* The length field should be set to the size of a breakpoint |
8181d85f | 7915 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 7916 | |
a1dcb23a | 7917 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 7918 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 7919 | |
444abaca | 7920 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7921 | return -1; |
2bc416ba | 7922 | |
4fff2411 JZ |
7923 | rs = get_remote_state (); |
7924 | p = rs->buf; | |
7925 | ||
96baa820 JM |
7926 | *(p++) = 'Z'; |
7927 | *(p++) = '1'; | |
7928 | *(p++) = ','; | |
802188a7 | 7929 | |
8181d85f | 7930 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7931 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7932 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7933 | |
6d820c5c DJ |
7934 | putpkt (rs->buf); |
7935 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7936 | |
6d820c5c | 7937 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7938 | { |
7939 | case PACKET_ERROR: | |
7940 | case PACKET_UNKNOWN: | |
7941 | return -1; | |
7942 | case PACKET_OK: | |
7943 | return 0; | |
7944 | } | |
8e65ff28 | 7945 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7946 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
7947 | } |
7948 | ||
d471ea57 | 7949 | |
802188a7 | 7950 | static int |
a6d9a66e UW |
7951 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
7952 | struct bp_target_info *bp_tgt) | |
96baa820 | 7953 | { |
8181d85f | 7954 | CORE_ADDR addr; |
d01949b6 | 7955 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 7956 | char *p = rs->buf; |
c8189ed1 | 7957 | |
444abaca | 7958 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7959 | return -1; |
802188a7 | 7960 | |
96baa820 JM |
7961 | *(p++) = 'z'; |
7962 | *(p++) = '1'; | |
7963 | *(p++) = ','; | |
802188a7 | 7964 | |
8181d85f | 7965 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7966 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7967 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7968 | |
6d820c5c DJ |
7969 | putpkt (rs->buf); |
7970 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 7971 | |
6d820c5c | 7972 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7973 | { |
7974 | case PACKET_ERROR: | |
7975 | case PACKET_UNKNOWN: | |
7976 | return -1; | |
7977 | case PACKET_OK: | |
7978 | return 0; | |
7979 | } | |
8e65ff28 | 7980 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7981 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 7982 | } |
96baa820 | 7983 | |
23860348 | 7984 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 7985 | |
c5aa993b JM |
7986 | static unsigned long crc32_table[256] = |
7987 | {0, 0}; | |
c906108c SS |
7988 | |
7989 | static unsigned long | |
4a5e7a5b | 7990 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 7991 | { |
c5aa993b | 7992 | if (!crc32_table[1]) |
c906108c | 7993 | { |
23860348 | 7994 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
7995 | int i, j; |
7996 | unsigned int c; | |
7997 | ||
7998 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
7999 | { |
8000 | for (c = i << 24, j = 8; j > 0; --j) | |
8001 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8002 | crc32_table[i] = c; | |
8003 | } | |
c906108c SS |
8004 | } |
8005 | ||
8006 | while (len--) | |
8007 | { | |
8008 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8009 | buf++; | |
8010 | } | |
8011 | return crc; | |
8012 | } | |
8013 | ||
4a5e7a5b PA |
8014 | /* Verify memory using the "qCRC:" request. */ |
8015 | ||
8016 | static int | |
8017 | remote_verify_memory (struct target_ops *ops, | |
8018 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8019 | { | |
8020 | struct remote_state *rs = get_remote_state (); | |
8021 | unsigned long host_crc, target_crc; | |
8022 | char *tmp; | |
8023 | ||
8024 | /* FIXME: assumes lma can fit into long. */ | |
8025 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8026 | (long) lma, (long) size); | |
8027 | putpkt (rs->buf); | |
8028 | ||
8029 | /* Be clever; compute the host_crc before waiting for target | |
8030 | reply. */ | |
8031 | host_crc = crc32 (data, size, 0xffffffff); | |
8032 | ||
8033 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8034 | if (rs->buf[0] == 'E') | |
8035 | return -1; | |
8036 | ||
8037 | if (rs->buf[0] != 'C') | |
8038 | error (_("remote target does not support this operation")); | |
8039 | ||
8040 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8041 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8042 | ||
8043 | return (host_crc == target_crc); | |
8044 | } | |
8045 | ||
c906108c SS |
8046 | /* compare-sections command |
8047 | ||
8048 | With no arguments, compares each loadable section in the exec bfd | |
8049 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8050 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8051 | |
c906108c | 8052 | static void |
fba45db2 | 8053 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8054 | { |
8055 | asection *s; | |
c906108c | 8056 | struct cleanup *old_chain; |
085dd6e6 | 8057 | char *sectdata; |
ce359b09 | 8058 | const char *sectname; |
c906108c SS |
8059 | bfd_size_type size; |
8060 | bfd_vma lma; | |
8061 | int matched = 0; | |
8062 | int mismatched = 0; | |
4a5e7a5b | 8063 | int res; |
c906108c SS |
8064 | |
8065 | if (!exec_bfd) | |
8a3fe4f8 | 8066 | error (_("command cannot be used without an exec file")); |
c906108c | 8067 | |
c5aa993b | 8068 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8069 | { |
8070 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8071 | continue; /* Skip non-loadable section. */ |
c906108c | 8072 | |
2c500098 | 8073 | size = bfd_get_section_size (s); |
c906108c | 8074 | if (size == 0) |
0df8b418 | 8075 | continue; /* Skip zero-length section. */ |
c906108c | 8076 | |
ce359b09 | 8077 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8078 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8079 | continue; /* Not the section selected by user. */ |
c906108c | 8080 | |
0df8b418 | 8081 | matched = 1; /* Do this section. */ |
c906108c | 8082 | lma = s->lma; |
c906108c | 8083 | |
c906108c | 8084 | sectdata = xmalloc (size); |
b8c9b27d | 8085 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8086 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8087 | |
4a5e7a5b PA |
8088 | res = target_verify_memory (sectdata, lma, size); |
8089 | ||
8090 | if (res == -1) | |
5af949e3 UW |
8091 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8092 | paddress (target_gdbarch, lma), | |
8093 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8094 | |
5af949e3 UW |
8095 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8096 | paddress (target_gdbarch, lma), | |
8097 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8098 | if (res) |
c906108c SS |
8099 | printf_filtered ("matched.\n"); |
8100 | else | |
c5aa993b JM |
8101 | { |
8102 | printf_filtered ("MIS-MATCHED!\n"); | |
8103 | mismatched++; | |
8104 | } | |
c906108c SS |
8105 | |
8106 | do_cleanups (old_chain); | |
8107 | } | |
8108 | if (mismatched > 0) | |
8a3fe4f8 AC |
8109 | warning (_("One or more sections of the remote executable does not match\n\ |
8110 | the loaded file\n")); | |
c906108c | 8111 | if (args && !matched) |
a3f17187 | 8112 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8113 | } |
8114 | ||
0e7f50da UW |
8115 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8116 | into remote target. The number of bytes written to the remote | |
8117 | target is returned, or -1 for error. */ | |
8118 | ||
8119 | static LONGEST | |
8120 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8121 | const char *annex, const gdb_byte *writebuf, | |
8122 | ULONGEST offset, LONGEST len, | |
8123 | struct packet_config *packet) | |
8124 | { | |
8125 | int i, buf_len; | |
8126 | ULONGEST n; | |
0e7f50da UW |
8127 | struct remote_state *rs = get_remote_state (); |
8128 | int max_size = get_memory_write_packet_size (); | |
8129 | ||
8130 | if (packet->support == PACKET_DISABLE) | |
8131 | return -1; | |
8132 | ||
8133 | /* Insert header. */ | |
8134 | i = snprintf (rs->buf, max_size, | |
8135 | "qXfer:%s:write:%s:%s:", | |
8136 | object_name, annex ? annex : "", | |
8137 | phex_nz (offset, sizeof offset)); | |
8138 | max_size -= (i + 1); | |
8139 | ||
8140 | /* Escape as much data as fits into rs->buf. */ | |
8141 | buf_len = remote_escape_output | |
8142 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8143 | ||
8144 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8145 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8146 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8147 | return -1; | |
8148 | ||
8149 | unpack_varlen_hex (rs->buf, &n); | |
8150 | return n; | |
8151 | } | |
8152 | ||
0876f84a DJ |
8153 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8154 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8155 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8156 | The number of bytes read may be less than LEN without indicating an | |
8157 | EOF. PACKET is checked and updated to indicate whether the remote | |
8158 | target supports this object. */ | |
8159 | ||
8160 | static LONGEST | |
8161 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8162 | const char *annex, | |
8163 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8164 | struct packet_config *packet) | |
8165 | { | |
8166 | static char *finished_object; | |
8167 | static char *finished_annex; | |
8168 | static ULONGEST finished_offset; | |
8169 | ||
8170 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8171 | LONGEST i, n, packet_len; |
8172 | ||
8173 | if (packet->support == PACKET_DISABLE) | |
8174 | return -1; | |
8175 | ||
8176 | /* Check whether we've cached an end-of-object packet that matches | |
8177 | this request. */ | |
8178 | if (finished_object) | |
8179 | { | |
8180 | if (strcmp (object_name, finished_object) == 0 | |
8181 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8182 | && offset == finished_offset) | |
8183 | return 0; | |
8184 | ||
8185 | /* Otherwise, we're now reading something different. Discard | |
8186 | the cache. */ | |
8187 | xfree (finished_object); | |
8188 | xfree (finished_annex); | |
8189 | finished_object = NULL; | |
8190 | finished_annex = NULL; | |
8191 | } | |
8192 | ||
8193 | /* Request only enough to fit in a single packet. The actual data | |
8194 | may not, since we don't know how much of it will need to be escaped; | |
8195 | the target is free to respond with slightly less data. We subtract | |
8196 | five to account for the response type and the protocol frame. */ | |
8197 | n = min (get_remote_packet_size () - 5, len); | |
8198 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8199 | object_name, annex ? annex : "", | |
8200 | phex_nz (offset, sizeof offset), | |
8201 | phex_nz (n, sizeof n)); | |
8202 | i = putpkt (rs->buf); | |
8203 | if (i < 0) | |
8204 | return -1; | |
8205 | ||
8206 | rs->buf[0] = '\0'; | |
8207 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8208 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8209 | return -1; | |
8210 | ||
8211 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8212 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8213 | ||
8214 | /* 'm' means there is (or at least might be) more data after this | |
8215 | batch. That does not make sense unless there's at least one byte | |
8216 | of data in this reply. */ | |
8217 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8218 | error (_("Remote qXfer reply contained no data.")); | |
8219 | ||
8220 | /* Got some data. */ | |
8221 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8222 | ||
8223 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8224 | or possibly empty. If we have the final block of a non-empty |
8225 | object, record this fact to bypass a subsequent partial read. */ | |
8226 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8227 | { |
8228 | finished_object = xstrdup (object_name); | |
8229 | finished_annex = xstrdup (annex ? annex : ""); | |
8230 | finished_offset = offset + i; | |
8231 | } | |
8232 | ||
8233 | return i; | |
8234 | } | |
8235 | ||
1e3ff5ad | 8236 | static LONGEST |
4b8a223f | 8237 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8238 | const char *annex, gdb_byte *readbuf, |
8239 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8240 | { |
82f73884 | 8241 | struct remote_state *rs; |
c906108c | 8242 | int i; |
6d820c5c | 8243 | char *p2; |
1e3ff5ad | 8244 | char query_type; |
c906108c | 8245 | |
e6e4e701 | 8246 | set_remote_traceframe (); |
82f73884 PA |
8247 | set_general_thread (inferior_ptid); |
8248 | ||
8249 | rs = get_remote_state (); | |
8250 | ||
b2182ed2 | 8251 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8252 | if (object == TARGET_OBJECT_MEMORY) |
8253 | { | |
8254 | int xfered; | |
a744cf53 | 8255 | |
21e3b9b9 DJ |
8256 | errno = 0; |
8257 | ||
2d717e4f DJ |
8258 | /* If the remote target is connected but not running, we should |
8259 | pass this request down to a lower stratum (e.g. the executable | |
8260 | file). */ | |
8261 | if (!target_has_execution) | |
8262 | return 0; | |
8263 | ||
21e3b9b9 | 8264 | if (writebuf != NULL) |
b2182ed2 | 8265 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8266 | else |
b2182ed2 | 8267 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8268 | |
8269 | if (xfered > 0) | |
8270 | return xfered; | |
8271 | else if (xfered == 0 && errno == 0) | |
8272 | return 0; | |
8273 | else | |
8274 | return -1; | |
8275 | } | |
8276 | ||
0df8b418 | 8277 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8278 | if (object == TARGET_OBJECT_SPU) |
8279 | { | |
8280 | if (readbuf) | |
8281 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8282 | &remote_protocol_packets | |
8283 | [PACKET_qXfer_spu_read]); | |
8284 | else | |
8285 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8286 | &remote_protocol_packets | |
8287 | [PACKET_qXfer_spu_write]); | |
8288 | } | |
8289 | ||
4aa995e1 PA |
8290 | /* Handle extra signal info using qxfer packets. */ |
8291 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8292 | { | |
8293 | if (readbuf) | |
8294 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8295 | &remote_protocol_packets | |
8296 | [PACKET_qXfer_siginfo_read]); | |
8297 | else | |
3e43a32a MS |
8298 | return remote_write_qxfer (ops, "siginfo", annex, |
8299 | writebuf, offset, len, | |
4aa995e1 PA |
8300 | &remote_protocol_packets |
8301 | [PACKET_qXfer_siginfo_write]); | |
8302 | } | |
8303 | ||
0fb4aa4b PA |
8304 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8305 | { | |
8306 | if (readbuf) | |
3e43a32a MS |
8307 | return remote_read_qxfer (ops, "statictrace", annex, |
8308 | readbuf, offset, len, | |
0fb4aa4b PA |
8309 | &remote_protocol_packets |
8310 | [PACKET_qXfer_statictrace_read]); | |
8311 | else | |
8312 | return -1; | |
8313 | } | |
8314 | ||
a76d924d DJ |
8315 | /* Only handle flash writes. */ |
8316 | if (writebuf != NULL) | |
8317 | { | |
8318 | LONGEST xfered; | |
8319 | ||
8320 | switch (object) | |
8321 | { | |
8322 | case TARGET_OBJECT_FLASH: | |
8323 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8324 | ||
8325 | if (xfered > 0) | |
8326 | return xfered; | |
8327 | else if (xfered == 0 && errno == 0) | |
8328 | return 0; | |
8329 | else | |
8330 | return -1; | |
8331 | ||
8332 | default: | |
8333 | return -1; | |
8334 | } | |
8335 | } | |
4b8a223f | 8336 | |
1e3ff5ad AC |
8337 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8338 | objects!!! Instead specify new query packets. */ | |
8339 | switch (object) | |
c906108c | 8340 | { |
1e3ff5ad AC |
8341 | case TARGET_OBJECT_AVR: |
8342 | query_type = 'R'; | |
8343 | break; | |
802188a7 RM |
8344 | |
8345 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8346 | gdb_assert (annex == NULL); |
8347 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8348 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8349 | |
23181151 DJ |
8350 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8351 | return remote_read_qxfer | |
8352 | (ops, "features", annex, readbuf, offset, len, | |
8353 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8354 | ||
cfa9d6d9 DJ |
8355 | case TARGET_OBJECT_LIBRARIES: |
8356 | return remote_read_qxfer | |
8357 | (ops, "libraries", annex, readbuf, offset, len, | |
8358 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8359 | ||
2268b414 JK |
8360 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8361 | return remote_read_qxfer | |
8362 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8363 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8364 | ||
fd79ecee DJ |
8365 | case TARGET_OBJECT_MEMORY_MAP: |
8366 | gdb_assert (annex == NULL); | |
8367 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8368 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8369 | ||
07e059b5 VP |
8370 | case TARGET_OBJECT_OSDATA: |
8371 | /* Should only get here if we're connected. */ | |
8372 | gdb_assert (remote_desc); | |
8373 | return remote_read_qxfer | |
8374 | (ops, "osdata", annex, readbuf, offset, len, | |
8375 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8376 | ||
dc146f7c VP |
8377 | case TARGET_OBJECT_THREADS: |
8378 | gdb_assert (annex == NULL); | |
8379 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8380 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8381 | ||
b3b9301e PA |
8382 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8383 | gdb_assert (annex == NULL); | |
8384 | return remote_read_qxfer | |
8385 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8386 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8387 | |
8388 | case TARGET_OBJECT_FDPIC: | |
8389 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8390 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
1e3ff5ad | 8391 | default: |
c906108c SS |
8392 | return -1; |
8393 | } | |
8394 | ||
4b8a223f | 8395 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8396 | buffer size. */ |
4b8a223f | 8397 | if (offset == 0 && len == 0) |
ea9c271d | 8398 | return (get_remote_packet_size ()); |
0df8b418 | 8399 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8400 | large enough let the caller deal with it. */ |
ea9c271d | 8401 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8402 | return -1; |
ea9c271d | 8403 | len = get_remote_packet_size (); |
1e3ff5ad | 8404 | |
23860348 | 8405 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8406 | if (!remote_desc) |
8a3fe4f8 | 8407 | error (_("remote query is only available after target open")); |
c906108c | 8408 | |
1e3ff5ad | 8409 | gdb_assert (annex != NULL); |
4b8a223f | 8410 | gdb_assert (readbuf != NULL); |
c906108c | 8411 | |
6d820c5c | 8412 | p2 = rs->buf; |
c906108c SS |
8413 | *p2++ = 'q'; |
8414 | *p2++ = query_type; | |
8415 | ||
23860348 MS |
8416 | /* We used one buffer char for the remote protocol q command and |
8417 | another for the query type. As the remote protocol encapsulation | |
8418 | uses 4 chars plus one extra in case we are debugging | |
8419 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8420 | string. */ | |
c906108c | 8421 | i = 0; |
ea9c271d | 8422 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8423 | { |
1e3ff5ad AC |
8424 | /* Bad caller may have sent forbidden characters. */ |
8425 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8426 | *p2++ = annex[i]; | |
c906108c SS |
8427 | i++; |
8428 | } | |
1e3ff5ad AC |
8429 | *p2 = '\0'; |
8430 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8431 | |
6d820c5c | 8432 | i = putpkt (rs->buf); |
c5aa993b JM |
8433 | if (i < 0) |
8434 | return i; | |
c906108c | 8435 | |
6d820c5c DJ |
8436 | getpkt (&rs->buf, &rs->buf_size, 0); |
8437 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8438 | |
cfd77fa1 | 8439 | return strlen ((char *) readbuf); |
c906108c SS |
8440 | } |
8441 | ||
08388c79 DE |
8442 | static int |
8443 | remote_search_memory (struct target_ops* ops, | |
8444 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8445 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8446 | CORE_ADDR *found_addrp) | |
8447 | { | |
5af949e3 | 8448 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8449 | struct remote_state *rs = get_remote_state (); |
8450 | int max_size = get_memory_write_packet_size (); | |
8451 | struct packet_config *packet = | |
8452 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8453 | /* Number of packet bytes used to encode the pattern; |
8454 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8455 | int escaped_pattern_len; |
0df8b418 | 8456 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8457 | int used_pattern_len; |
8458 | int i; | |
8459 | int found; | |
8460 | ULONGEST found_addr; | |
8461 | ||
8462 | /* Don't go to the target if we don't have to. | |
8463 | This is done before checking packet->support to avoid the possibility that | |
8464 | a success for this edge case means the facility works in general. */ | |
8465 | if (pattern_len > search_space_len) | |
8466 | return 0; | |
8467 | if (pattern_len == 0) | |
8468 | { | |
8469 | *found_addrp = start_addr; | |
8470 | return 1; | |
8471 | } | |
8472 | ||
8473 | /* If we already know the packet isn't supported, fall back to the simple | |
8474 | way of searching memory. */ | |
8475 | ||
8476 | if (packet->support == PACKET_DISABLE) | |
8477 | { | |
8478 | /* Target doesn't provided special support, fall back and use the | |
8479 | standard support (copy memory and do the search here). */ | |
8480 | return simple_search_memory (ops, start_addr, search_space_len, | |
8481 | pattern, pattern_len, found_addrp); | |
8482 | } | |
8483 | ||
8484 | /* Insert header. */ | |
8485 | i = snprintf (rs->buf, max_size, | |
8486 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8487 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8488 | phex_nz (search_space_len, sizeof (search_space_len))); |
8489 | max_size -= (i + 1); | |
8490 | ||
8491 | /* Escape as much data as fits into rs->buf. */ | |
8492 | escaped_pattern_len = | |
8493 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8494 | &used_pattern_len, max_size); | |
8495 | ||
8496 | /* Bail if the pattern is too large. */ | |
8497 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8498 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8499 | |
8500 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8501 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8502 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8503 | { | |
8504 | /* The request may not have worked because the command is not | |
8505 | supported. If so, fall back to the simple way. */ | |
8506 | if (packet->support == PACKET_DISABLE) | |
8507 | { | |
8508 | return simple_search_memory (ops, start_addr, search_space_len, | |
8509 | pattern, pattern_len, found_addrp); | |
8510 | } | |
8511 | return -1; | |
8512 | } | |
8513 | ||
8514 | if (rs->buf[0] == '0') | |
8515 | found = 0; | |
8516 | else if (rs->buf[0] == '1') | |
8517 | { | |
8518 | found = 1; | |
8519 | if (rs->buf[1] != ',') | |
10e0fa18 | 8520 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8521 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8522 | *found_addrp = found_addr; | |
8523 | } | |
8524 | else | |
10e0fa18 | 8525 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8526 | |
8527 | return found; | |
8528 | } | |
8529 | ||
96baa820 JM |
8530 | static void |
8531 | remote_rcmd (char *command, | |
d9fcf2fb | 8532 | struct ui_file *outbuf) |
96baa820 | 8533 | { |
d01949b6 | 8534 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8535 | char *p = rs->buf; |
96baa820 JM |
8536 | |
8537 | if (!remote_desc) | |
8a3fe4f8 | 8538 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8539 | |
23860348 | 8540 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8541 | if (command == NULL) |
8542 | command = ""; | |
8543 | ||
23860348 | 8544 | /* The query prefix. */ |
2e9f7625 DJ |
8545 | strcpy (rs->buf, "qRcmd,"); |
8546 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8547 | |
3e43a32a MS |
8548 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8549 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8550 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8551 | |
23860348 | 8552 | /* Encode the actual command. */ |
cfd77fa1 | 8553 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8554 | |
6d820c5c | 8555 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8556 | error (_("Communication problem with target.")); |
96baa820 JM |
8557 | |
8558 | /* get/display the response */ | |
8559 | while (1) | |
8560 | { | |
2e9f7625 DJ |
8561 | char *buf; |
8562 | ||
00bf0b85 | 8563 | /* XXX - see also remote_get_noisy_reply(). */ |
2e9f7625 | 8564 | rs->buf[0] = '\0'; |
6d820c5c | 8565 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 8566 | buf = rs->buf; |
96baa820 | 8567 | if (buf[0] == '\0') |
8a3fe4f8 | 8568 | error (_("Target does not support this command.")); |
96baa820 JM |
8569 | if (buf[0] == 'O' && buf[1] != 'K') |
8570 | { | |
23860348 | 8571 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8572 | continue; |
8573 | } | |
8574 | if (strcmp (buf, "OK") == 0) | |
8575 | break; | |
7be570e7 JM |
8576 | if (strlen (buf) == 3 && buf[0] == 'E' |
8577 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8578 | { | |
8a3fe4f8 | 8579 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8580 | } |
96baa820 JM |
8581 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8582 | { | |
8583 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8584 | |
96baa820 JM |
8585 | fputc_unfiltered (c, outbuf); |
8586 | } | |
8587 | break; | |
8588 | } | |
8589 | } | |
8590 | ||
fd79ecee DJ |
8591 | static VEC(mem_region_s) * |
8592 | remote_memory_map (struct target_ops *ops) | |
8593 | { | |
8594 | VEC(mem_region_s) *result = NULL; | |
8595 | char *text = target_read_stralloc (¤t_target, | |
8596 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8597 | ||
8598 | if (text) | |
8599 | { | |
8600 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8601 | |
fd79ecee DJ |
8602 | result = parse_memory_map (text); |
8603 | do_cleanups (back_to); | |
8604 | } | |
8605 | ||
8606 | return result; | |
8607 | } | |
8608 | ||
c906108c | 8609 | static void |
fba45db2 | 8610 | packet_command (char *args, int from_tty) |
c906108c | 8611 | { |
d01949b6 | 8612 | struct remote_state *rs = get_remote_state (); |
c906108c | 8613 | |
c5aa993b | 8614 | if (!remote_desc) |
8a3fe4f8 | 8615 | error (_("command can only be used with remote target")); |
c906108c | 8616 | |
c5aa993b | 8617 | if (!args) |
8a3fe4f8 | 8618 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8619 | |
8620 | puts_filtered ("sending: "); | |
8621 | print_packet (args); | |
8622 | puts_filtered ("\n"); | |
8623 | putpkt (args); | |
8624 | ||
6d820c5c | 8625 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8626 | puts_filtered ("received: "); |
6d820c5c | 8627 | print_packet (rs->buf); |
c906108c SS |
8628 | puts_filtered ("\n"); |
8629 | } | |
8630 | ||
8631 | #if 0 | |
23860348 | 8632 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8633 | |
a14ed312 | 8634 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8635 | |
a14ed312 | 8636 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8637 | |
a14ed312 | 8638 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8639 | |
a14ed312 | 8640 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8641 | |
23860348 | 8642 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8643 | |
a14ed312 | 8644 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8645 | |
23860348 | 8646 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8647 | |
a14ed312 | 8648 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8649 | |
a14ed312 | 8650 | static void init_remote_threadtests (void); |
c906108c | 8651 | |
23860348 | 8652 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8653 | |
8654 | static void | |
fba45db2 | 8655 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8656 | { |
8657 | int sample_thread = SAMPLE_THREAD; | |
8658 | ||
a3f17187 | 8659 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8660 | set_general_thread (sample_thread); |
c906108c SS |
8661 | } |
8662 | ||
8663 | ||
8664 | static void | |
fba45db2 | 8665 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8666 | { |
8667 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8668 | int pid = ptid_get_pid (inferior_ptid); |
8669 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8670 | |
79d7f229 | 8671 | if (remote_thread_alive (ptid)) |
c906108c SS |
8672 | printf_filtered ("PASS: Thread alive test\n"); |
8673 | else | |
8674 | printf_filtered ("FAIL: Thread alive test\n"); | |
8675 | } | |
8676 | ||
23860348 | 8677 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8678 | |
8679 | void | |
fba45db2 | 8680 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8681 | { |
8682 | char hexid[20]; | |
8683 | ||
23860348 | 8684 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8685 | hexid[16] = 0; |
8686 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8687 | } | |
8688 | ||
8689 | static void | |
fba45db2 | 8690 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8691 | { |
8692 | int startflag = 1; | |
8693 | threadref nextthread; | |
8694 | int done, result_count; | |
8695 | threadref threadlist[3]; | |
8696 | ||
8697 | printf_filtered ("Remote Threadlist test\n"); | |
8698 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8699 | &result_count, &threadlist[0])) | |
8700 | printf_filtered ("FAIL: threadlist test\n"); | |
8701 | else | |
8702 | { | |
8703 | threadref *scan = threadlist; | |
8704 | threadref *limit = scan + result_count; | |
8705 | ||
8706 | while (scan < limit) | |
8707 | output_threadid (" thread ", scan++); | |
8708 | } | |
8709 | } | |
8710 | ||
8711 | void | |
fba45db2 | 8712 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8713 | { |
8714 | output_threadid ("Threadid: ", &info->threadid); | |
8715 | printf_filtered ("Name: %s\n ", info->shortname); | |
8716 | printf_filtered ("State: %s\n", info->display); | |
8717 | printf_filtered ("other: %s\n\n", info->more_display); | |
8718 | } | |
8719 | ||
8720 | int | |
fba45db2 | 8721 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8722 | { |
8723 | int result; | |
8724 | int set; | |
8725 | struct gdb_ext_thread_info threadinfo; | |
8726 | ||
8727 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8728 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8729 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8730 | display_thread_info (&threadinfo); | |
8731 | return result; | |
8732 | } | |
8733 | ||
8734 | static void | |
fba45db2 | 8735 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8736 | { |
8737 | int athread = SAMPLE_THREAD; | |
8738 | threadref thread; | |
8739 | int set; | |
8740 | ||
8741 | int_to_threadref (&thread, athread); | |
8742 | printf_filtered ("Remote Threadinfo test\n"); | |
8743 | if (!get_and_display_threadinfo (&thread)) | |
8744 | printf_filtered ("FAIL cannot get thread info\n"); | |
8745 | } | |
8746 | ||
8747 | static int | |
fba45db2 | 8748 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8749 | { |
8750 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8751 | return get_and_display_threadinfo (ref); | |
8752 | } | |
8753 | ||
8754 | static void | |
fba45db2 | 8755 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8756 | { |
8757 | printf_filtered ("Remote Threadlist update test\n"); | |
8758 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8759 | } | |
8760 | ||
8761 | static void | |
8762 | init_remote_threadtests (void) | |
8763 | { | |
3e43a32a MS |
8764 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8765 | _("Fetch and print the remote list of " | |
8766 | "thread identifiers, one pkt only")); | |
c906108c | 8767 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8768 | _("Fetch and display info about one thread")); |
c906108c | 8769 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8770 | _("Test setting to a different thread")); |
c906108c | 8771 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8772 | _("Iterate through updating all remote thread info")); |
c906108c | 8773 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8774 | _(" Remote thread alive test ")); |
c906108c SS |
8775 | } |
8776 | ||
8777 | #endif /* 0 */ | |
8778 | ||
f3fb8c85 MS |
8779 | /* Convert a thread ID to a string. Returns the string in a static |
8780 | buffer. */ | |
8781 | ||
8782 | static char * | |
117de6a9 | 8783 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8784 | { |
79d7f229 | 8785 | static char buf[64]; |
82f73884 | 8786 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8787 | |
ecd0ada5 PA |
8788 | if (ptid_is_pid (ptid)) |
8789 | { | |
8790 | /* Printing an inferior target id. */ | |
8791 | ||
8792 | /* When multi-process extensions are off, there's no way in the | |
8793 | remote protocol to know the remote process id, if there's any | |
8794 | at all. There's one exception --- when we're connected with | |
8795 | target extended-remote, and we manually attached to a process | |
8796 | with "attach PID". We don't record anywhere a flag that | |
8797 | allows us to distinguish that case from the case of | |
8798 | connecting with extended-remote and the stub already being | |
8799 | attached to a process, and reporting yes to qAttached, hence | |
8800 | no smart special casing here. */ | |
8801 | if (!remote_multi_process_p (rs)) | |
8802 | { | |
8803 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8804 | return buf; | |
8805 | } | |
8806 | ||
8807 | return normal_pid_to_str (ptid); | |
82f73884 | 8808 | } |
ecd0ada5 | 8809 | else |
79d7f229 | 8810 | { |
ecd0ada5 PA |
8811 | if (ptid_equal (magic_null_ptid, ptid)) |
8812 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8813 | else if (remote_multi_process_p (rs)) | |
8814 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
8815 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8816 | else | |
8817 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8818 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8819 | return buf; |
8820 | } | |
f3fb8c85 MS |
8821 | } |
8822 | ||
38691318 KB |
8823 | /* Get the address of the thread local variable in OBJFILE which is |
8824 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8825 | ||
8826 | static CORE_ADDR | |
117de6a9 PA |
8827 | remote_get_thread_local_address (struct target_ops *ops, |
8828 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8829 | { |
444abaca | 8830 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8831 | { |
8832 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8833 | char *p = rs->buf; |
82f73884 | 8834 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8835 | enum packet_result result; |
38691318 KB |
8836 | |
8837 | strcpy (p, "qGetTLSAddr:"); | |
8838 | p += strlen (p); | |
82f73884 | 8839 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8840 | *p++ = ','; |
8841 | p += hexnumstr (p, offset); | |
8842 | *p++ = ','; | |
8843 | p += hexnumstr (p, lm); | |
8844 | *p++ = '\0'; | |
8845 | ||
6d820c5c DJ |
8846 | putpkt (rs->buf); |
8847 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8848 | result = packet_ok (rs->buf, |
8849 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8850 | if (result == PACKET_OK) |
38691318 KB |
8851 | { |
8852 | ULONGEST result; | |
8853 | ||
6d820c5c | 8854 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8855 | return result; |
8856 | } | |
571dd617 | 8857 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8858 | throw_error (TLS_GENERIC_ERROR, |
8859 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8860 | else |
109c3e39 AC |
8861 | throw_error (TLS_GENERIC_ERROR, |
8862 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8863 | } |
8864 | else | |
109c3e39 AC |
8865 | throw_error (TLS_GENERIC_ERROR, |
8866 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8867 | /* Not reached. */ |
8868 | return 0; | |
8869 | } | |
8870 | ||
711e434b PM |
8871 | /* Provide thread local base, i.e. Thread Information Block address. |
8872 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8873 | ||
8874 | int | |
8875 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
8876 | { | |
8877 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8878 | { | |
8879 | struct remote_state *rs = get_remote_state (); | |
8880 | char *p = rs->buf; | |
8881 | char *endp = rs->buf + get_remote_packet_size (); | |
8882 | enum packet_result result; | |
8883 | ||
8884 | strcpy (p, "qGetTIBAddr:"); | |
8885 | p += strlen (p); | |
8886 | p = write_ptid (p, endp, ptid); | |
8887 | *p++ = '\0'; | |
8888 | ||
8889 | putpkt (rs->buf); | |
8890 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8891 | result = packet_ok (rs->buf, | |
8892 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
8893 | if (result == PACKET_OK) | |
8894 | { | |
8895 | ULONGEST result; | |
8896 | ||
8897 | unpack_varlen_hex (rs->buf, &result); | |
8898 | if (addr) | |
8899 | *addr = (CORE_ADDR) result; | |
8900 | return 1; | |
8901 | } | |
8902 | else if (result == PACKET_UNKNOWN) | |
8903 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
8904 | else | |
8905 | error (_("Remote target failed to process qGetTIBAddr request")); | |
8906 | } | |
8907 | else | |
8908 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
8909 | /* Not reached. */ | |
8910 | return 0; | |
8911 | } | |
8912 | ||
29709017 DJ |
8913 | /* Support for inferring a target description based on the current |
8914 | architecture and the size of a 'g' packet. While the 'g' packet | |
8915 | can have any size (since optional registers can be left off the | |
8916 | end), some sizes are easily recognizable given knowledge of the | |
8917 | approximate architecture. */ | |
8918 | ||
8919 | struct remote_g_packet_guess | |
8920 | { | |
8921 | int bytes; | |
8922 | const struct target_desc *tdesc; | |
8923 | }; | |
8924 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
8925 | DEF_VEC_O(remote_g_packet_guess_s); | |
8926 | ||
8927 | struct remote_g_packet_data | |
8928 | { | |
8929 | VEC(remote_g_packet_guess_s) *guesses; | |
8930 | }; | |
8931 | ||
8932 | static struct gdbarch_data *remote_g_packet_data_handle; | |
8933 | ||
8934 | static void * | |
8935 | remote_g_packet_data_init (struct obstack *obstack) | |
8936 | { | |
8937 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
8938 | } | |
8939 | ||
8940 | void | |
8941 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
8942 | const struct target_desc *tdesc) | |
8943 | { | |
8944 | struct remote_g_packet_data *data | |
8945 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
8946 | struct remote_g_packet_guess new_guess, *guess; | |
8947 | int ix; | |
8948 | ||
8949 | gdb_assert (tdesc != NULL); | |
8950 | ||
8951 | for (ix = 0; | |
8952 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8953 | ix++) | |
8954 | if (guess->bytes == bytes) | |
8955 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8956 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
8957 | bytes); |
8958 | ||
8959 | new_guess.bytes = bytes; | |
8960 | new_guess.tdesc = tdesc; | |
8961 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
8962 | } | |
8963 | ||
d962ef82 DJ |
8964 | /* Return 1 if remote_read_description would do anything on this target |
8965 | and architecture, 0 otherwise. */ | |
8966 | ||
8967 | static int | |
8968 | remote_read_description_p (struct target_ops *target) | |
8969 | { | |
8970 | struct remote_g_packet_data *data | |
8971 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
8972 | ||
8973 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
8974 | return 1; | |
8975 | ||
8976 | return 0; | |
8977 | } | |
8978 | ||
29709017 DJ |
8979 | static const struct target_desc * |
8980 | remote_read_description (struct target_ops *target) | |
8981 | { | |
8982 | struct remote_g_packet_data *data | |
1cf3db46 | 8983 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 8984 | |
d962ef82 DJ |
8985 | /* Do not try this during initial connection, when we do not know |
8986 | whether there is a running but stopped thread. */ | |
8987 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
8988 | return NULL; | |
8989 | ||
29709017 DJ |
8990 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
8991 | { | |
8992 | struct remote_g_packet_guess *guess; | |
8993 | int ix; | |
8994 | int bytes = send_g_packet (); | |
8995 | ||
8996 | for (ix = 0; | |
8997 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8998 | ix++) | |
8999 | if (guess->bytes == bytes) | |
9000 | return guess->tdesc; | |
9001 | ||
9002 | /* We discard the g packet. A minor optimization would be to | |
9003 | hold on to it, and fill the register cache once we have selected | |
9004 | an architecture, but it's too tricky to do safely. */ | |
9005 | } | |
9006 | ||
9007 | return NULL; | |
9008 | } | |
9009 | ||
a6b151f1 DJ |
9010 | /* Remote file transfer support. This is host-initiated I/O, not |
9011 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9012 | ||
9013 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9014 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9015 | decrease *LEFT. Otherwise raise an error. */ | |
9016 | ||
9017 | static void | |
9018 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9019 | { | |
9020 | int len = strlen (string); | |
9021 | ||
9022 | if (len > *left) | |
9023 | error (_("Packet too long for target.")); | |
9024 | ||
9025 | memcpy (*buffer, string, len); | |
9026 | *buffer += len; | |
9027 | *left -= len; | |
9028 | ||
9029 | /* NUL-terminate the buffer as a convenience, if there is | |
9030 | room. */ | |
9031 | if (*left) | |
9032 | **buffer = '\0'; | |
9033 | } | |
9034 | ||
9035 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9036 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9037 | decrease *LEFT. Otherwise raise an error. */ | |
9038 | ||
9039 | static void | |
9040 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9041 | int len) | |
9042 | { | |
9043 | if (2 * len > *left) | |
9044 | error (_("Packet too long for target.")); | |
9045 | ||
9046 | bin2hex (bytes, *buffer, len); | |
9047 | *buffer += 2 * len; | |
9048 | *left -= 2 * len; | |
9049 | ||
9050 | /* NUL-terminate the buffer as a convenience, if there is | |
9051 | room. */ | |
9052 | if (*left) | |
9053 | **buffer = '\0'; | |
9054 | } | |
9055 | ||
9056 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9057 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9058 | decrease *LEFT. Otherwise raise an error. */ | |
9059 | ||
9060 | static void | |
9061 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9062 | { | |
9063 | int len = hexnumlen (value); | |
9064 | ||
9065 | if (len > *left) | |
9066 | error (_("Packet too long for target.")); | |
9067 | ||
9068 | hexnumstr (*buffer, value); | |
9069 | *buffer += len; | |
9070 | *left -= len; | |
9071 | ||
9072 | /* NUL-terminate the buffer as a convenience, if there is | |
9073 | room. */ | |
9074 | if (*left) | |
9075 | **buffer = '\0'; | |
9076 | } | |
9077 | ||
9078 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9079 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9080 | was included, and *ATTACHMENT to point to the start of the annex | |
9081 | if any. The length of the packet isn't needed here; there may | |
9082 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9083 | ||
9084 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9085 | -1 is returned, the other variables may not be initialized. */ | |
9086 | ||
9087 | static int | |
9088 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9089 | int *remote_errno, char **attachment) | |
9090 | { | |
9091 | char *p, *p2; | |
9092 | ||
9093 | *remote_errno = 0; | |
9094 | *attachment = NULL; | |
9095 | ||
9096 | if (buffer[0] != 'F') | |
9097 | return -1; | |
9098 | ||
9099 | errno = 0; | |
9100 | *retcode = strtol (&buffer[1], &p, 16); | |
9101 | if (errno != 0 || p == &buffer[1]) | |
9102 | return -1; | |
9103 | ||
9104 | /* Check for ",errno". */ | |
9105 | if (*p == ',') | |
9106 | { | |
9107 | errno = 0; | |
9108 | *remote_errno = strtol (p + 1, &p2, 16); | |
9109 | if (errno != 0 || p + 1 == p2) | |
9110 | return -1; | |
9111 | p = p2; | |
9112 | } | |
9113 | ||
9114 | /* Check for ";attachment". If there is no attachment, the | |
9115 | packet should end here. */ | |
9116 | if (*p == ';') | |
9117 | { | |
9118 | *attachment = p + 1; | |
9119 | return 0; | |
9120 | } | |
9121 | else if (*p == '\0') | |
9122 | return 0; | |
9123 | else | |
9124 | return -1; | |
9125 | } | |
9126 | ||
9127 | /* Send a prepared I/O packet to the target and read its response. | |
9128 | The prepared packet is in the global RS->BUF before this function | |
9129 | is called, and the answer is there when we return. | |
9130 | ||
9131 | COMMAND_BYTES is the length of the request to send, which may include | |
9132 | binary data. WHICH_PACKET is the packet configuration to check | |
9133 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9134 | is set to the error number and -1 is returned. Otherwise the value | |
9135 | returned by the function is returned. | |
9136 | ||
9137 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9138 | attachment is expected; an error will be reported if there's a | |
9139 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9140 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9141 | attachment's length. */ | |
9142 | ||
9143 | static int | |
9144 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9145 | int *remote_errno, char **attachment, | |
9146 | int *attachment_len) | |
9147 | { | |
9148 | struct remote_state *rs = get_remote_state (); | |
9149 | int ret, bytes_read; | |
9150 | char *attachment_tmp; | |
9151 | ||
f1838a98 UW |
9152 | if (!remote_desc |
9153 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9154 | { |
9155 | *remote_errno = FILEIO_ENOSYS; | |
9156 | return -1; | |
9157 | } | |
9158 | ||
9159 | putpkt_binary (rs->buf, command_bytes); | |
9160 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9161 | ||
9162 | /* If it timed out, something is wrong. Don't try to parse the | |
9163 | buffer. */ | |
9164 | if (bytes_read < 0) | |
9165 | { | |
9166 | *remote_errno = FILEIO_EINVAL; | |
9167 | return -1; | |
9168 | } | |
9169 | ||
9170 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9171 | { | |
9172 | case PACKET_ERROR: | |
9173 | *remote_errno = FILEIO_EINVAL; | |
9174 | return -1; | |
9175 | case PACKET_UNKNOWN: | |
9176 | *remote_errno = FILEIO_ENOSYS; | |
9177 | return -1; | |
9178 | case PACKET_OK: | |
9179 | break; | |
9180 | } | |
9181 | ||
9182 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9183 | &attachment_tmp)) | |
9184 | { | |
9185 | *remote_errno = FILEIO_EINVAL; | |
9186 | return -1; | |
9187 | } | |
9188 | ||
9189 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9190 | if ((attachment_tmp == NULL && attachment != NULL) | |
9191 | || (attachment_tmp != NULL && attachment == NULL)) | |
9192 | { | |
9193 | *remote_errno = FILEIO_EINVAL; | |
9194 | return -1; | |
9195 | } | |
9196 | ||
9197 | /* If an attachment was found, it must point into the packet buffer; | |
9198 | work out how many bytes there were. */ | |
9199 | if (attachment_tmp != NULL) | |
9200 | { | |
9201 | *attachment = attachment_tmp; | |
9202 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9203 | } | |
9204 | ||
9205 | return ret; | |
9206 | } | |
9207 | ||
9208 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9209 | remote file descriptor, or -1 if an error occurs (and set | |
9210 | *REMOTE_ERRNO). */ | |
9211 | ||
9212 | static int | |
9213 | remote_hostio_open (const char *filename, int flags, int mode, | |
9214 | int *remote_errno) | |
9215 | { | |
9216 | struct remote_state *rs = get_remote_state (); | |
9217 | char *p = rs->buf; | |
9218 | int left = get_remote_packet_size () - 1; | |
9219 | ||
9220 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9221 | ||
9222 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9223 | strlen (filename)); | |
9224 | remote_buffer_add_string (&p, &left, ","); | |
9225 | ||
9226 | remote_buffer_add_int (&p, &left, flags); | |
9227 | remote_buffer_add_string (&p, &left, ","); | |
9228 | ||
9229 | remote_buffer_add_int (&p, &left, mode); | |
9230 | ||
9231 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9232 | remote_errno, NULL, NULL); | |
9233 | } | |
9234 | ||
9235 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9236 | Return the number of bytes written, or -1 if an error occurs (and | |
9237 | set *REMOTE_ERRNO). */ | |
9238 | ||
9239 | static int | |
9240 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9241 | ULONGEST offset, int *remote_errno) | |
9242 | { | |
9243 | struct remote_state *rs = get_remote_state (); | |
9244 | char *p = rs->buf; | |
9245 | int left = get_remote_packet_size (); | |
9246 | int out_len; | |
9247 | ||
9248 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9249 | ||
9250 | remote_buffer_add_int (&p, &left, fd); | |
9251 | remote_buffer_add_string (&p, &left, ","); | |
9252 | ||
9253 | remote_buffer_add_int (&p, &left, offset); | |
9254 | remote_buffer_add_string (&p, &left, ","); | |
9255 | ||
9256 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9257 | get_remote_packet_size () - (p - rs->buf)); | |
9258 | ||
9259 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9260 | remote_errno, NULL, NULL); | |
9261 | } | |
9262 | ||
9263 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9264 | Return the number of bytes read, or -1 if an error occurs (and | |
9265 | set *REMOTE_ERRNO). */ | |
9266 | ||
9267 | static int | |
9268 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9269 | ULONGEST offset, int *remote_errno) | |
9270 | { | |
9271 | struct remote_state *rs = get_remote_state (); | |
9272 | char *p = rs->buf; | |
9273 | char *attachment; | |
9274 | int left = get_remote_packet_size (); | |
9275 | int ret, attachment_len; | |
9276 | int read_len; | |
9277 | ||
9278 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9279 | ||
9280 | remote_buffer_add_int (&p, &left, fd); | |
9281 | remote_buffer_add_string (&p, &left, ","); | |
9282 | ||
9283 | remote_buffer_add_int (&p, &left, len); | |
9284 | remote_buffer_add_string (&p, &left, ","); | |
9285 | ||
9286 | remote_buffer_add_int (&p, &left, offset); | |
9287 | ||
9288 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9289 | remote_errno, &attachment, | |
9290 | &attachment_len); | |
9291 | ||
9292 | if (ret < 0) | |
9293 | return ret; | |
9294 | ||
9295 | read_len = remote_unescape_input (attachment, attachment_len, | |
9296 | read_buf, len); | |
9297 | if (read_len != ret) | |
9298 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9299 | ||
9300 | return ret; | |
9301 | } | |
9302 | ||
9303 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9304 | (and set *REMOTE_ERRNO). */ | |
9305 | ||
9306 | static int | |
9307 | remote_hostio_close (int fd, int *remote_errno) | |
9308 | { | |
9309 | struct remote_state *rs = get_remote_state (); | |
9310 | char *p = rs->buf; | |
9311 | int left = get_remote_packet_size () - 1; | |
9312 | ||
9313 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9314 | ||
9315 | remote_buffer_add_int (&p, &left, fd); | |
9316 | ||
9317 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9318 | remote_errno, NULL, NULL); | |
9319 | } | |
9320 | ||
9321 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9322 | occurs (and set *REMOTE_ERRNO). */ | |
9323 | ||
9324 | static int | |
9325 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9326 | { | |
9327 | struct remote_state *rs = get_remote_state (); | |
9328 | char *p = rs->buf; | |
9329 | int left = get_remote_packet_size () - 1; | |
9330 | ||
9331 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9332 | ||
9333 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9334 | strlen (filename)); | |
9335 | ||
9336 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9337 | remote_errno, NULL, NULL); | |
9338 | } | |
9339 | ||
9340 | static int | |
9341 | remote_fileio_errno_to_host (int errnum) | |
9342 | { | |
9343 | switch (errnum) | |
9344 | { | |
9345 | case FILEIO_EPERM: | |
9346 | return EPERM; | |
9347 | case FILEIO_ENOENT: | |
9348 | return ENOENT; | |
9349 | case FILEIO_EINTR: | |
9350 | return EINTR; | |
9351 | case FILEIO_EIO: | |
9352 | return EIO; | |
9353 | case FILEIO_EBADF: | |
9354 | return EBADF; | |
9355 | case FILEIO_EACCES: | |
9356 | return EACCES; | |
9357 | case FILEIO_EFAULT: | |
9358 | return EFAULT; | |
9359 | case FILEIO_EBUSY: | |
9360 | return EBUSY; | |
9361 | case FILEIO_EEXIST: | |
9362 | return EEXIST; | |
9363 | case FILEIO_ENODEV: | |
9364 | return ENODEV; | |
9365 | case FILEIO_ENOTDIR: | |
9366 | return ENOTDIR; | |
9367 | case FILEIO_EISDIR: | |
9368 | return EISDIR; | |
9369 | case FILEIO_EINVAL: | |
9370 | return EINVAL; | |
9371 | case FILEIO_ENFILE: | |
9372 | return ENFILE; | |
9373 | case FILEIO_EMFILE: | |
9374 | return EMFILE; | |
9375 | case FILEIO_EFBIG: | |
9376 | return EFBIG; | |
9377 | case FILEIO_ENOSPC: | |
9378 | return ENOSPC; | |
9379 | case FILEIO_ESPIPE: | |
9380 | return ESPIPE; | |
9381 | case FILEIO_EROFS: | |
9382 | return EROFS; | |
9383 | case FILEIO_ENOSYS: | |
9384 | return ENOSYS; | |
9385 | case FILEIO_ENAMETOOLONG: | |
9386 | return ENAMETOOLONG; | |
9387 | } | |
9388 | return -1; | |
9389 | } | |
9390 | ||
9391 | static char * | |
9392 | remote_hostio_error (int errnum) | |
9393 | { | |
9394 | int host_error = remote_fileio_errno_to_host (errnum); | |
9395 | ||
9396 | if (host_error == -1) | |
9397 | error (_("Unknown remote I/O error %d"), errnum); | |
9398 | else | |
9399 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9400 | } | |
9401 | ||
a6b151f1 DJ |
9402 | static void |
9403 | remote_hostio_close_cleanup (void *opaque) | |
9404 | { | |
9405 | int fd = *(int *) opaque; | |
9406 | int remote_errno; | |
9407 | ||
9408 | remote_hostio_close (fd, &remote_errno); | |
9409 | } | |
9410 | ||
f1838a98 UW |
9411 | |
9412 | static void * | |
9413 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9414 | { | |
9415 | const char *filename = bfd_get_filename (abfd); | |
9416 | int fd, remote_errno; | |
9417 | int *stream; | |
9418 | ||
9419 | gdb_assert (remote_filename_p (filename)); | |
9420 | ||
9421 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9422 | if (fd == -1) | |
9423 | { | |
9424 | errno = remote_fileio_errno_to_host (remote_errno); | |
9425 | bfd_set_error (bfd_error_system_call); | |
9426 | return NULL; | |
9427 | } | |
9428 | ||
9429 | stream = xmalloc (sizeof (int)); | |
9430 | *stream = fd; | |
9431 | return stream; | |
9432 | } | |
9433 | ||
9434 | static int | |
9435 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9436 | { | |
9437 | int fd = *(int *)stream; | |
9438 | int remote_errno; | |
9439 | ||
9440 | xfree (stream); | |
9441 | ||
9442 | /* Ignore errors on close; these may happen if the remote | |
9443 | connection was already torn down. */ | |
9444 | remote_hostio_close (fd, &remote_errno); | |
9445 | ||
9446 | return 1; | |
9447 | } | |
9448 | ||
9449 | static file_ptr | |
9450 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9451 | file_ptr nbytes, file_ptr offset) | |
9452 | { | |
9453 | int fd = *(int *)stream; | |
9454 | int remote_errno; | |
9455 | file_ptr pos, bytes; | |
9456 | ||
9457 | pos = 0; | |
9458 | while (nbytes > pos) | |
9459 | { | |
9460 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9461 | offset + pos, &remote_errno); | |
9462 | if (bytes == 0) | |
9463 | /* Success, but no bytes, means end-of-file. */ | |
9464 | break; | |
9465 | if (bytes == -1) | |
9466 | { | |
9467 | errno = remote_fileio_errno_to_host (remote_errno); | |
9468 | bfd_set_error (bfd_error_system_call); | |
9469 | return -1; | |
9470 | } | |
9471 | ||
9472 | pos += bytes; | |
9473 | } | |
9474 | ||
9475 | return pos; | |
9476 | } | |
9477 | ||
9478 | static int | |
9479 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9480 | { | |
9481 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9482 | sb->st_size = INT_MAX; | |
9483 | return 0; | |
9484 | } | |
9485 | ||
9486 | int | |
9487 | remote_filename_p (const char *filename) | |
9488 | { | |
9489 | return strncmp (filename, "remote:", 7) == 0; | |
9490 | } | |
9491 | ||
9492 | bfd * | |
9493 | remote_bfd_open (const char *remote_file, const char *target) | |
9494 | { | |
9495 | return bfd_openr_iovec (remote_file, target, | |
9496 | remote_bfd_iovec_open, NULL, | |
9497 | remote_bfd_iovec_pread, | |
9498 | remote_bfd_iovec_close, | |
9499 | remote_bfd_iovec_stat); | |
9500 | } | |
9501 | ||
a6b151f1 DJ |
9502 | void |
9503 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9504 | { | |
9505 | struct cleanup *back_to, *close_cleanup; | |
9506 | int retcode, fd, remote_errno, bytes, io_size; | |
9507 | FILE *file; | |
9508 | gdb_byte *buffer; | |
9509 | int bytes_in_buffer; | |
9510 | int saw_eof; | |
9511 | ULONGEST offset; | |
9512 | ||
9513 | if (!remote_desc) | |
9514 | error (_("command can only be used with remote target")); | |
9515 | ||
9516 | file = fopen (local_file, "rb"); | |
9517 | if (file == NULL) | |
9518 | perror_with_name (local_file); | |
7c8a8b04 | 9519 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9520 | |
9521 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9522 | | FILEIO_O_TRUNC), | |
9523 | 0700, &remote_errno); | |
9524 | if (fd == -1) | |
9525 | remote_hostio_error (remote_errno); | |
9526 | ||
9527 | /* Send up to this many bytes at once. They won't all fit in the | |
9528 | remote packet limit, so we'll transfer slightly fewer. */ | |
9529 | io_size = get_remote_packet_size (); | |
9530 | buffer = xmalloc (io_size); | |
9531 | make_cleanup (xfree, buffer); | |
9532 | ||
9533 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9534 | ||
9535 | bytes_in_buffer = 0; | |
9536 | saw_eof = 0; | |
9537 | offset = 0; | |
9538 | while (bytes_in_buffer || !saw_eof) | |
9539 | { | |
9540 | if (!saw_eof) | |
9541 | { | |
3e43a32a MS |
9542 | bytes = fread (buffer + bytes_in_buffer, 1, |
9543 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9544 | file); |
9545 | if (bytes == 0) | |
9546 | { | |
9547 | if (ferror (file)) | |
9548 | error (_("Error reading %s."), local_file); | |
9549 | else | |
9550 | { | |
9551 | /* EOF. Unless there is something still in the | |
9552 | buffer from the last iteration, we are done. */ | |
9553 | saw_eof = 1; | |
9554 | if (bytes_in_buffer == 0) | |
9555 | break; | |
9556 | } | |
9557 | } | |
9558 | } | |
9559 | else | |
9560 | bytes = 0; | |
9561 | ||
9562 | bytes += bytes_in_buffer; | |
9563 | bytes_in_buffer = 0; | |
9564 | ||
3e43a32a MS |
9565 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9566 | offset, &remote_errno); | |
a6b151f1 DJ |
9567 | |
9568 | if (retcode < 0) | |
9569 | remote_hostio_error (remote_errno); | |
9570 | else if (retcode == 0) | |
9571 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9572 | else if (retcode < bytes) | |
9573 | { | |
9574 | /* Short write. Save the rest of the read data for the next | |
9575 | write. */ | |
9576 | bytes_in_buffer = bytes - retcode; | |
9577 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9578 | } | |
9579 | ||
9580 | offset += retcode; | |
9581 | } | |
9582 | ||
9583 | discard_cleanups (close_cleanup); | |
9584 | if (remote_hostio_close (fd, &remote_errno)) | |
9585 | remote_hostio_error (remote_errno); | |
9586 | ||
9587 | if (from_tty) | |
9588 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9589 | do_cleanups (back_to); | |
9590 | } | |
9591 | ||
9592 | void | |
9593 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9594 | { | |
9595 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9596 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9597 | FILE *file; |
9598 | gdb_byte *buffer; | |
9599 | ULONGEST offset; | |
9600 | ||
9601 | if (!remote_desc) | |
9602 | error (_("command can only be used with remote target")); | |
9603 | ||
9604 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9605 | if (fd == -1) | |
9606 | remote_hostio_error (remote_errno); | |
9607 | ||
9608 | file = fopen (local_file, "wb"); | |
9609 | if (file == NULL) | |
9610 | perror_with_name (local_file); | |
7c8a8b04 | 9611 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9612 | |
9613 | /* Send up to this many bytes at once. They won't all fit in the | |
9614 | remote packet limit, so we'll transfer slightly fewer. */ | |
9615 | io_size = get_remote_packet_size (); | |
9616 | buffer = xmalloc (io_size); | |
9617 | make_cleanup (xfree, buffer); | |
9618 | ||
9619 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9620 | ||
9621 | offset = 0; | |
9622 | while (1) | |
9623 | { | |
9624 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9625 | if (bytes == 0) | |
9626 | /* Success, but no bytes, means end-of-file. */ | |
9627 | break; | |
9628 | if (bytes == -1) | |
9629 | remote_hostio_error (remote_errno); | |
9630 | ||
9631 | offset += bytes; | |
9632 | ||
9633 | bytes = fwrite (buffer, 1, bytes, file); | |
9634 | if (bytes == 0) | |
9635 | perror_with_name (local_file); | |
9636 | } | |
9637 | ||
9638 | discard_cleanups (close_cleanup); | |
9639 | if (remote_hostio_close (fd, &remote_errno)) | |
9640 | remote_hostio_error (remote_errno); | |
9641 | ||
9642 | if (from_tty) | |
9643 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9644 | do_cleanups (back_to); | |
9645 | } | |
9646 | ||
9647 | void | |
9648 | remote_file_delete (const char *remote_file, int from_tty) | |
9649 | { | |
9650 | int retcode, remote_errno; | |
9651 | ||
9652 | if (!remote_desc) | |
9653 | error (_("command can only be used with remote target")); | |
9654 | ||
9655 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9656 | if (retcode == -1) | |
9657 | remote_hostio_error (remote_errno); | |
9658 | ||
9659 | if (from_tty) | |
9660 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9661 | } | |
9662 | ||
9663 | static void | |
9664 | remote_put_command (char *args, int from_tty) | |
9665 | { | |
9666 | struct cleanup *back_to; | |
9667 | char **argv; | |
9668 | ||
d1a41061 PP |
9669 | if (args == NULL) |
9670 | error_no_arg (_("file to put")); | |
9671 | ||
9672 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9673 | back_to = make_cleanup_freeargv (argv); |
9674 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9675 | error (_("Invalid parameters to remote put")); | |
9676 | ||
9677 | remote_file_put (argv[0], argv[1], from_tty); | |
9678 | ||
9679 | do_cleanups (back_to); | |
9680 | } | |
9681 | ||
9682 | static void | |
9683 | remote_get_command (char *args, int from_tty) | |
9684 | { | |
9685 | struct cleanup *back_to; | |
9686 | char **argv; | |
9687 | ||
d1a41061 PP |
9688 | if (args == NULL) |
9689 | error_no_arg (_("file to get")); | |
9690 | ||
9691 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9692 | back_to = make_cleanup_freeargv (argv); |
9693 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9694 | error (_("Invalid parameters to remote get")); | |
9695 | ||
9696 | remote_file_get (argv[0], argv[1], from_tty); | |
9697 | ||
9698 | do_cleanups (back_to); | |
9699 | } | |
9700 | ||
9701 | static void | |
9702 | remote_delete_command (char *args, int from_tty) | |
9703 | { | |
9704 | struct cleanup *back_to; | |
9705 | char **argv; | |
9706 | ||
d1a41061 PP |
9707 | if (args == NULL) |
9708 | error_no_arg (_("file to delete")); | |
9709 | ||
9710 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9711 | back_to = make_cleanup_freeargv (argv); |
9712 | if (argv[0] == NULL || argv[1] != NULL) | |
9713 | error (_("Invalid parameters to remote delete")); | |
9714 | ||
9715 | remote_file_delete (argv[0], from_tty); | |
9716 | ||
9717 | do_cleanups (back_to); | |
9718 | } | |
9719 | ||
9720 | static void | |
9721 | remote_command (char *args, int from_tty) | |
9722 | { | |
9723 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9724 | } | |
9725 | ||
b2175913 MS |
9726 | static int |
9727 | remote_can_execute_reverse (void) | |
9728 | { | |
40ab02ce MS |
9729 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9730 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9731 | return 1; | |
9732 | else | |
9733 | return 0; | |
b2175913 MS |
9734 | } |
9735 | ||
74531fed PA |
9736 | static int |
9737 | remote_supports_non_stop (void) | |
9738 | { | |
9739 | return 1; | |
9740 | } | |
9741 | ||
03583c20 UW |
9742 | static int |
9743 | remote_supports_disable_randomization (void) | |
9744 | { | |
9745 | /* Only supported in extended mode. */ | |
9746 | return 0; | |
9747 | } | |
9748 | ||
8a305172 PA |
9749 | static int |
9750 | remote_supports_multi_process (void) | |
9751 | { | |
9752 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9753 | |
8a305172 PA |
9754 | return remote_multi_process_p (rs); |
9755 | } | |
9756 | ||
782b2b07 SS |
9757 | int |
9758 | remote_supports_cond_tracepoints (void) | |
9759 | { | |
9760 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9761 | |
782b2b07 SS |
9762 | return rs->cond_tracepoints; |
9763 | } | |
9764 | ||
7a697b8d SS |
9765 | int |
9766 | remote_supports_fast_tracepoints (void) | |
9767 | { | |
9768 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9769 | |
7a697b8d SS |
9770 | return rs->fast_tracepoints; |
9771 | } | |
9772 | ||
0fb4aa4b PA |
9773 | static int |
9774 | remote_supports_static_tracepoints (void) | |
9775 | { | |
9776 | struct remote_state *rs = get_remote_state (); | |
9777 | ||
9778 | return rs->static_tracepoints; | |
9779 | } | |
9780 | ||
1e4d1764 YQ |
9781 | static int |
9782 | remote_supports_install_in_trace (void) | |
9783 | { | |
9784 | struct remote_state *rs = get_remote_state (); | |
9785 | ||
9786 | return rs->install_in_trace; | |
9787 | } | |
9788 | ||
d248b706 KY |
9789 | static int |
9790 | remote_supports_enable_disable_tracepoint (void) | |
9791 | { | |
9792 | struct remote_state *rs = get_remote_state (); | |
9793 | ||
9794 | return rs->enable_disable_tracepoints; | |
9795 | } | |
9796 | ||
3065dfb6 SS |
9797 | static int |
9798 | remote_supports_string_tracing (void) | |
9799 | { | |
9800 | struct remote_state *rs = get_remote_state (); | |
9801 | ||
9802 | return rs->string_tracing; | |
9803 | } | |
9804 | ||
35b1e5cc | 9805 | static void |
ad91cd99 | 9806 | remote_trace_init (void) |
35b1e5cc SS |
9807 | { |
9808 | putpkt ("QTinit"); | |
9809 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9810 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9811 | error (_("Target does not support this command.")); |
9812 | } | |
9813 | ||
9814 | static void free_actions_list (char **actions_list); | |
9815 | static void free_actions_list_cleanup_wrapper (void *); | |
9816 | static void | |
9817 | free_actions_list_cleanup_wrapper (void *al) | |
9818 | { | |
9819 | free_actions_list (al); | |
9820 | } | |
9821 | ||
9822 | static void | |
9823 | free_actions_list (char **actions_list) | |
9824 | { | |
9825 | int ndx; | |
9826 | ||
9827 | if (actions_list == 0) | |
9828 | return; | |
9829 | ||
9830 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9831 | xfree (actions_list[ndx]); | |
9832 | ||
9833 | xfree (actions_list); | |
9834 | } | |
9835 | ||
409873ef SS |
9836 | /* Recursive routine to walk through command list including loops, and |
9837 | download packets for each command. */ | |
9838 | ||
9839 | static void | |
9840 | remote_download_command_source (int num, ULONGEST addr, | |
9841 | struct command_line *cmds) | |
9842 | { | |
9843 | struct remote_state *rs = get_remote_state (); | |
9844 | struct command_line *cmd; | |
9845 | ||
9846 | for (cmd = cmds; cmd; cmd = cmd->next) | |
9847 | { | |
0df8b418 | 9848 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9849 | strcpy (rs->buf, "QTDPsrc:"); |
9850 | encode_source_string (num, addr, "cmd", cmd->line, | |
9851 | rs->buf + strlen (rs->buf), | |
9852 | rs->buf_size - strlen (rs->buf)); | |
9853 | putpkt (rs->buf); | |
9854 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9855 | if (strcmp (target_buf, "OK")) | |
9856 | warning (_("Target does not support source download.")); | |
9857 | ||
9858 | if (cmd->control_type == while_control | |
9859 | || cmd->control_type == while_stepping_control) | |
9860 | { | |
9861 | remote_download_command_source (num, addr, *cmd->body_list); | |
9862 | ||
0df8b418 | 9863 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9864 | strcpy (rs->buf, "QTDPsrc:"); |
9865 | encode_source_string (num, addr, "cmd", "end", | |
9866 | rs->buf + strlen (rs->buf), | |
9867 | rs->buf_size - strlen (rs->buf)); | |
9868 | putpkt (rs->buf); | |
9869 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9870 | if (strcmp (target_buf, "OK")) | |
9871 | warning (_("Target does not support source download.")); | |
9872 | } | |
9873 | } | |
9874 | } | |
9875 | ||
35b1e5cc | 9876 | static void |
e8ba3115 | 9877 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 9878 | { |
e8ba3115 | 9879 | |
35b1e5cc | 9880 | CORE_ADDR tpaddr; |
409873ef | 9881 | char addrbuf[40]; |
35b1e5cc SS |
9882 | char buf[2048]; |
9883 | char **tdp_actions; | |
9884 | char **stepping_actions; | |
9885 | int ndx; | |
9886 | struct cleanup *old_chain = NULL; | |
9887 | struct agent_expr *aexpr; | |
9888 | struct cleanup *aexpr_chain = NULL; | |
9889 | char *pkt; | |
e8ba3115 | 9890 | struct breakpoint *b = loc->owner; |
d9b3f62e | 9891 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 9892 | |
e8ba3115 YQ |
9893 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
9894 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
9895 | tdp_actions); | |
9896 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
9897 | stepping_actions); | |
9898 | ||
9899 | tpaddr = loc->address; | |
9900 | sprintf_vma (addrbuf, tpaddr); | |
9901 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number, | |
9902 | addrbuf, /* address */ | |
9903 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
9904 | t->step_count, t->pass_count); | |
9905 | /* Fast tracepoints are mostly handled by the target, but we can | |
9906 | tell the target how big of an instruction block should be moved | |
9907 | around. */ | |
9908 | if (b->type == bp_fast_tracepoint) | |
9909 | { | |
9910 | /* Only test for support at download time; we may not know | |
9911 | target capabilities at definition time. */ | |
9912 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 9913 | { |
e8ba3115 | 9914 | int isize; |
35b1e5cc | 9915 | |
e8ba3115 YQ |
9916 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
9917 | tpaddr, &isize, NULL)) | |
9918 | sprintf (buf + strlen (buf), ":F%x", isize); | |
35b1e5cc | 9919 | else |
e8ba3115 YQ |
9920 | /* If it passed validation at definition but fails now, |
9921 | something is very wrong. */ | |
9922 | internal_error (__FILE__, __LINE__, | |
9923 | _("Fast tracepoint not " | |
9924 | "valid during download")); | |
35b1e5cc | 9925 | } |
e8ba3115 YQ |
9926 | else |
9927 | /* Fast tracepoints are functionally identical to regular | |
9928 | tracepoints, so don't take lack of support as a reason to | |
9929 | give up on the trace run. */ | |
9930 | warning (_("Target does not support fast tracepoints, " | |
9931 | "downloading %d as regular tracepoint"), b->number); | |
9932 | } | |
9933 | else if (b->type == bp_static_tracepoint) | |
9934 | { | |
9935 | /* Only test for support at download time; we may not know | |
9936 | target capabilities at definition time. */ | |
9937 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 9938 | { |
e8ba3115 | 9939 | struct static_tracepoint_marker marker; |
0fb4aa4b | 9940 | |
e8ba3115 YQ |
9941 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
9942 | strcat (buf, ":S"); | |
0fb4aa4b | 9943 | else |
e8ba3115 | 9944 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 9945 | } |
e8ba3115 YQ |
9946 | else |
9947 | /* Fast tracepoints are functionally identical to regular | |
9948 | tracepoints, so don't take lack of support as a reason | |
9949 | to give up on the trace run. */ | |
9950 | error (_("Target does not support static tracepoints")); | |
9951 | } | |
9952 | /* If the tracepoint has a conditional, make it into an agent | |
9953 | expression and append to the definition. */ | |
9954 | if (loc->cond) | |
9955 | { | |
9956 | /* Only test support at download time, we may not know target | |
9957 | capabilities at definition time. */ | |
9958 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 9959 | { |
e8ba3115 YQ |
9960 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
9961 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
9962 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
9963 | pkt = buf + strlen (buf); | |
9964 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
9965 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
9966 | *pkt = '\0'; | |
9967 | do_cleanups (aexpr_chain); | |
35b1e5cc | 9968 | } |
e8ba3115 YQ |
9969 | else |
9970 | warning (_("Target does not support conditional tracepoints, " | |
9971 | "ignoring tp %d cond"), b->number); | |
9972 | } | |
35b1e5cc | 9973 | |
d9b3f62e | 9974 | if (b->commands || *default_collect) |
e8ba3115 YQ |
9975 | strcat (buf, "-"); |
9976 | putpkt (buf); | |
9977 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9978 | if (strcmp (target_buf, "OK")) | |
9979 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 9980 | |
e8ba3115 YQ |
9981 | /* do_single_steps (t); */ |
9982 | if (tdp_actions) | |
9983 | { | |
9984 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 9985 | { |
e8ba3115 YQ |
9986 | QUIT; /* Allow user to bail out with ^C. */ |
9987 | sprintf (buf, "QTDP:-%x:%s:%s%c", | |
9988 | b->number, addrbuf, /* address */ | |
9989 | tdp_actions[ndx], | |
9990 | ((tdp_actions[ndx + 1] || stepping_actions) | |
9991 | ? '-' : 0)); | |
9992 | putpkt (buf); | |
9993 | remote_get_noisy_reply (&target_buf, | |
9994 | &target_buf_size); | |
9995 | if (strcmp (target_buf, "OK")) | |
9996 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 9997 | } |
e8ba3115 YQ |
9998 | } |
9999 | if (stepping_actions) | |
10000 | { | |
10001 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10002 | { |
e8ba3115 YQ |
10003 | QUIT; /* Allow user to bail out with ^C. */ |
10004 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", | |
10005 | b->number, addrbuf, /* address */ | |
10006 | ((ndx == 0) ? "S" : ""), | |
10007 | stepping_actions[ndx], | |
10008 | (stepping_actions[ndx + 1] ? "-" : "")); | |
10009 | putpkt (buf); | |
10010 | remote_get_noisy_reply (&target_buf, | |
10011 | &target_buf_size); | |
10012 | if (strcmp (target_buf, "OK")) | |
10013 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10014 | } |
e8ba3115 | 10015 | } |
409873ef | 10016 | |
e8ba3115 YQ |
10017 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10018 | == PACKET_ENABLE) | |
10019 | { | |
10020 | if (b->addr_string) | |
409873ef | 10021 | { |
e8ba3115 YQ |
10022 | strcpy (buf, "QTDPsrc:"); |
10023 | encode_source_string (b->number, loc->address, | |
10024 | "at", b->addr_string, buf + strlen (buf), | |
10025 | 2048 - strlen (buf)); | |
409873ef | 10026 | |
e8ba3115 YQ |
10027 | putpkt (buf); |
10028 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10029 | if (strcmp (target_buf, "OK")) | |
10030 | warning (_("Target does not support source download.")); | |
409873ef | 10031 | } |
e8ba3115 YQ |
10032 | if (b->cond_string) |
10033 | { | |
10034 | strcpy (buf, "QTDPsrc:"); | |
10035 | encode_source_string (b->number, loc->address, | |
10036 | "cond", b->cond_string, buf + strlen (buf), | |
10037 | 2048 - strlen (buf)); | |
10038 | putpkt (buf); | |
10039 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10040 | if (strcmp (target_buf, "OK")) | |
10041 | warning (_("Target does not support source download.")); | |
10042 | } | |
10043 | remote_download_command_source (b->number, loc->address, | |
10044 | breakpoint_commands (b)); | |
35b1e5cc | 10045 | } |
e8ba3115 YQ |
10046 | |
10047 | do_cleanups (old_chain); | |
35b1e5cc SS |
10048 | } |
10049 | ||
1e4d1764 YQ |
10050 | static int |
10051 | remote_can_download_tracepoint (void) | |
10052 | { | |
10053 | struct trace_status *ts = current_trace_status (); | |
10054 | int status = remote_get_trace_status (ts); | |
10055 | ||
10056 | if (status == -1 || !ts->running_known || !ts->running) | |
10057 | return 0; | |
10058 | ||
10059 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10060 | installing tracepoint in trace, we have to return. */ | |
10061 | if (!remote_supports_install_in_trace ()) | |
10062 | return 0; | |
10063 | ||
10064 | return 1; | |
10065 | } | |
10066 | ||
10067 | ||
35b1e5cc SS |
10068 | static void |
10069 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10070 | { | |
10071 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10072 | char *p; |
35b1e5cc | 10073 | |
00bf0b85 SS |
10074 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
10075 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
10076 | p = rs->buf + strlen (rs->buf); | |
10077 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10078 | error (_("Trace state variable name too long for tsv definition packet")); | |
10079 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10080 | *p++ = '\0'; | |
35b1e5cc SS |
10081 | putpkt (rs->buf); |
10082 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10083 | if (*target_buf == '\0') |
10084 | error (_("Target does not support this command.")); | |
10085 | if (strcmp (target_buf, "OK") != 0) | |
10086 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10087 | } |
10088 | ||
d248b706 KY |
10089 | static void |
10090 | remote_enable_tracepoint (struct bp_location *location) | |
10091 | { | |
10092 | struct remote_state *rs = get_remote_state (); | |
10093 | char addr_buf[40]; | |
10094 | ||
10095 | sprintf_vma (addr_buf, location->address); | |
10096 | sprintf (rs->buf, "QTEnable:%x:%s", location->owner->number, addr_buf); | |
10097 | putpkt (rs->buf); | |
10098 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10099 | if (*rs->buf == '\0') | |
10100 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10101 | if (strcmp (rs->buf, "OK") != 0) | |
10102 | error (_("Error on target while enabling tracepoint.")); | |
10103 | } | |
10104 | ||
10105 | static void | |
10106 | remote_disable_tracepoint (struct bp_location *location) | |
10107 | { | |
10108 | struct remote_state *rs = get_remote_state (); | |
10109 | char addr_buf[40]; | |
10110 | ||
10111 | sprintf_vma (addr_buf, location->address); | |
10112 | sprintf (rs->buf, "QTDisable:%x:%s", location->owner->number, addr_buf); | |
10113 | putpkt (rs->buf); | |
10114 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10115 | if (*rs->buf == '\0') | |
10116 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10117 | if (strcmp (rs->buf, "OK") != 0) | |
10118 | error (_("Error on target while disabling tracepoint.")); | |
10119 | } | |
10120 | ||
35b1e5cc | 10121 | static void |
ad91cd99 | 10122 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10123 | { |
10124 | asection *s; | |
10125 | bfd_size_type size; | |
608bcef2 | 10126 | bfd_vma vma; |
35b1e5cc | 10127 | int anysecs = 0; |
c2fa21f1 | 10128 | int offset = 0; |
35b1e5cc SS |
10129 | |
10130 | if (!exec_bfd) | |
10131 | return; /* No information to give. */ | |
10132 | ||
10133 | strcpy (target_buf, "QTro"); | |
10134 | for (s = exec_bfd->sections; s; s = s->next) | |
10135 | { | |
10136 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10137 | int sec_length; |
35b1e5cc SS |
10138 | |
10139 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10140 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10141 | (s->flags & SEC_READONLY) == 0) |
10142 | continue; | |
10143 | ||
10144 | anysecs = 1; | |
608bcef2 | 10145 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 10146 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10147 | sprintf_vma (tmp1, vma); |
10148 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10149 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10150 | if (offset + sec_length + 1 > target_buf_size) | |
10151 | { | |
864ac8a7 HZ |
10152 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10153 | != PACKET_ENABLE) | |
10154 | warning (_("\ | |
c2fa21f1 HZ |
10155 | Too many sections for read-only sections definition packet.")); |
10156 | break; | |
10157 | } | |
10158 | sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2); | |
10159 | offset += sec_length; | |
35b1e5cc SS |
10160 | } |
10161 | if (anysecs) | |
10162 | { | |
10163 | putpkt (target_buf); | |
10164 | getpkt (&target_buf, &target_buf_size, 0); | |
10165 | } | |
10166 | } | |
10167 | ||
10168 | static void | |
ad91cd99 | 10169 | remote_trace_start (void) |
35b1e5cc SS |
10170 | { |
10171 | putpkt ("QTStart"); | |
10172 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10173 | if (*target_buf == '\0') |
10174 | error (_("Target does not support this command.")); | |
10175 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10176 | error (_("Bogus reply from target: %s"), target_buf); |
10177 | } | |
10178 | ||
10179 | static int | |
00bf0b85 | 10180 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10181 | { |
953b98d1 | 10182 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10183 | char *p = NULL; |
0df8b418 | 10184 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10185 | extern int trace_regblock_size; |
67f41397 | 10186 | volatile struct gdb_exception ex; |
a744cf53 | 10187 | |
00bf0b85 SS |
10188 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10189 | ||
35b1e5cc | 10190 | putpkt ("qTStatus"); |
67f41397 JK |
10191 | |
10192 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10193 | { | |
10194 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10195 | } | |
10196 | if (ex.reason < 0) | |
10197 | { | |
10198 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10199 | return -1; | |
10200 | } | |
00bf0b85 SS |
10201 | |
10202 | /* If the remote target doesn't do tracing, flag it. */ | |
10203 | if (*p == '\0') | |
10204 | return -1; | |
35b1e5cc | 10205 | |
00bf0b85 SS |
10206 | /* We're working with a live target. */ |
10207 | ts->from_file = 0; | |
10208 | ||
10209 | /* Set some defaults. */ | |
10210 | ts->running_known = 0; | |
10211 | ts->stop_reason = trace_stop_reason_unknown; | |
10212 | ts->traceframe_count = -1; | |
10213 | ts->buffer_free = 0; | |
10214 | ||
10215 | if (*p++ != 'T') | |
35b1e5cc SS |
10216 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10217 | ||
00bf0b85 SS |
10218 | parse_trace_status (p, ts); |
10219 | ||
10220 | return ts->running; | |
35b1e5cc SS |
10221 | } |
10222 | ||
f196051f SS |
10223 | void |
10224 | remote_get_tracepoint_status (struct breakpoint *bp, | |
10225 | struct uploaded_tp *utp) | |
10226 | { | |
10227 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10228 | char *reply; |
10229 | struct bp_location *loc; | |
10230 | struct tracepoint *tp = (struct tracepoint *) bp; | |
10231 | ||
10232 | if (tp) | |
10233 | { | |
10234 | tp->base.hit_count = 0; | |
10235 | tp->traceframe_usage = 0; | |
10236 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10237 | { | |
10238 | /* If the tracepoint was never downloaded, don't go asking for | |
10239 | any status. */ | |
10240 | if (tp->number_on_target == 0) | |
10241 | continue; | |
2bf50f6f JB |
10242 | sprintf (rs->buf, "qTP:%x:%s", tp->number_on_target, |
10243 | phex_nz (loc->address, 0)); | |
f196051f SS |
10244 | putpkt (rs->buf); |
10245 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10246 | if (reply && *reply) | |
10247 | { | |
10248 | if (*reply == 'V') | |
10249 | parse_tracepoint_status (reply + 1, bp, utp); | |
10250 | } | |
10251 | } | |
10252 | } | |
10253 | else if (utp) | |
10254 | { | |
10255 | utp->hit_count = 0; | |
10256 | utp->traceframe_usage = 0; | |
2bf50f6f | 10257 | sprintf (rs->buf, "qTP:%x:%s", utp->number, phex_nz (utp->addr, 0)); |
f196051f SS |
10258 | putpkt (rs->buf); |
10259 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10260 | if (reply && *reply) | |
10261 | { | |
10262 | if (*reply == 'V') | |
10263 | parse_tracepoint_status (reply + 1, bp, utp); | |
10264 | } | |
10265 | } | |
10266 | } | |
10267 | ||
35b1e5cc | 10268 | static void |
ad91cd99 | 10269 | remote_trace_stop (void) |
35b1e5cc SS |
10270 | { |
10271 | putpkt ("QTStop"); | |
10272 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10273 | if (*target_buf == '\0') |
10274 | error (_("Target does not support this command.")); | |
10275 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10276 | error (_("Bogus reply from target: %s"), target_buf); |
10277 | } | |
10278 | ||
10279 | static int | |
10280 | remote_trace_find (enum trace_find_type type, int num, | |
10281 | ULONGEST addr1, ULONGEST addr2, | |
10282 | int *tpp) | |
10283 | { | |
10284 | struct remote_state *rs = get_remote_state (); | |
10285 | char *p, *reply; | |
10286 | int target_frameno = -1, target_tracept = -1; | |
10287 | ||
e6e4e701 PA |
10288 | /* Lookups other than by absolute frame number depend on the current |
10289 | trace selected, so make sure it is correct on the remote end | |
10290 | first. */ | |
10291 | if (type != tfind_number) | |
10292 | set_remote_traceframe (); | |
10293 | ||
35b1e5cc SS |
10294 | p = rs->buf; |
10295 | strcpy (p, "QTFrame:"); | |
10296 | p = strchr (p, '\0'); | |
10297 | switch (type) | |
10298 | { | |
10299 | case tfind_number: | |
10300 | sprintf (p, "%x", num); | |
10301 | break; | |
10302 | case tfind_pc: | |
00bf0b85 | 10303 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10304 | break; |
10305 | case tfind_tp: | |
10306 | sprintf (p, "tdp:%x", num); | |
10307 | break; | |
10308 | case tfind_range: | |
00bf0b85 | 10309 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10310 | break; |
10311 | case tfind_outside: | |
00bf0b85 | 10312 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10313 | break; |
10314 | default: | |
9b20d036 | 10315 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10316 | } |
10317 | ||
10318 | putpkt (rs->buf); | |
10319 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10320 | if (*reply == '\0') |
10321 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10322 | |
10323 | while (reply && *reply) | |
10324 | switch (*reply) | |
10325 | { | |
10326 | case 'F': | |
f197e0f1 VP |
10327 | p = ++reply; |
10328 | target_frameno = (int) strtol (p, &reply, 16); | |
10329 | if (reply == p) | |
10330 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10331 | /* Don't update our remote traceframe number cache on failure |
10332 | to select a remote traceframe. */ | |
f197e0f1 VP |
10333 | if (target_frameno == -1) |
10334 | return -1; | |
35b1e5cc SS |
10335 | break; |
10336 | case 'T': | |
f197e0f1 VP |
10337 | p = ++reply; |
10338 | target_tracept = (int) strtol (p, &reply, 16); | |
10339 | if (reply == p) | |
10340 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10341 | break; |
10342 | case 'O': /* "OK"? */ | |
10343 | if (reply[1] == 'K' && reply[2] == '\0') | |
10344 | reply += 2; | |
10345 | else | |
10346 | error (_("Bogus reply from target: %s"), reply); | |
10347 | break; | |
10348 | default: | |
10349 | error (_("Bogus reply from target: %s"), reply); | |
10350 | } | |
10351 | if (tpp) | |
10352 | *tpp = target_tracept; | |
e6e4e701 PA |
10353 | |
10354 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10355 | return target_frameno; |
10356 | } | |
10357 | ||
10358 | static int | |
10359 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10360 | { | |
10361 | struct remote_state *rs = get_remote_state (); | |
10362 | char *reply; | |
10363 | ULONGEST uval; | |
10364 | ||
e6e4e701 PA |
10365 | set_remote_traceframe (); |
10366 | ||
35b1e5cc SS |
10367 | sprintf (rs->buf, "qTV:%x", tsvnum); |
10368 | putpkt (rs->buf); | |
10369 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10370 | if (reply && *reply) | |
10371 | { | |
10372 | if (*reply == 'V') | |
10373 | { | |
10374 | unpack_varlen_hex (reply + 1, &uval); | |
10375 | *val = (LONGEST) uval; | |
10376 | return 1; | |
10377 | } | |
10378 | } | |
10379 | return 0; | |
10380 | } | |
10381 | ||
00bf0b85 | 10382 | static int |
011aacb0 | 10383 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10384 | { |
10385 | struct remote_state *rs = get_remote_state (); | |
10386 | char *p, *reply; | |
10387 | ||
10388 | p = rs->buf; | |
10389 | strcpy (p, "QTSave:"); | |
10390 | p += strlen (p); | |
10391 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10392 | error (_("Remote file name too long for trace save packet")); | |
10393 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10394 | *p++ = '\0'; | |
10395 | putpkt (rs->buf); | |
ad91cd99 | 10396 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10397 | if (*reply == '\0') |
ad91cd99 PA |
10398 | error (_("Target does not support this command.")); |
10399 | if (strcmp (reply, "OK") != 0) | |
10400 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10401 | return 0; |
10402 | } | |
10403 | ||
10404 | /* This is basically a memory transfer, but needs to be its own packet | |
10405 | because we don't know how the target actually organizes its trace | |
10406 | memory, plus we want to be able to ask for as much as possible, but | |
10407 | not be unhappy if we don't get as much as we ask for. */ | |
10408 | ||
10409 | static LONGEST | |
10410 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10411 | { | |
10412 | struct remote_state *rs = get_remote_state (); | |
10413 | char *reply; | |
10414 | char *p; | |
10415 | int rslt; | |
10416 | ||
10417 | p = rs->buf; | |
10418 | strcpy (p, "qTBuffer:"); | |
10419 | p += strlen (p); | |
10420 | p += hexnumstr (p, offset); | |
10421 | *p++ = ','; | |
10422 | p += hexnumstr (p, len); | |
10423 | *p++ = '\0'; | |
10424 | ||
10425 | putpkt (rs->buf); | |
10426 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10427 | if (reply && *reply) | |
10428 | { | |
10429 | /* 'l' by itself means we're at the end of the buffer and | |
10430 | there is nothing more to get. */ | |
10431 | if (*reply == 'l') | |
10432 | return 0; | |
10433 | ||
10434 | /* Convert the reply into binary. Limit the number of bytes to | |
10435 | convert according to our passed-in buffer size, rather than | |
10436 | what was returned in the packet; if the target is | |
10437 | unexpectedly generous and gives us a bigger reply than we | |
10438 | asked for, we don't want to crash. */ | |
10439 | rslt = hex2bin (target_buf, buf, len); | |
10440 | return rslt; | |
10441 | } | |
10442 | ||
10443 | /* Something went wrong, flag as an error. */ | |
10444 | return -1; | |
10445 | } | |
10446 | ||
35b1e5cc SS |
10447 | static void |
10448 | remote_set_disconnected_tracing (int val) | |
10449 | { | |
10450 | struct remote_state *rs = get_remote_state (); | |
10451 | ||
33da3f1c SS |
10452 | if (rs->disconnected_tracing) |
10453 | { | |
ad91cd99 PA |
10454 | char *reply; |
10455 | ||
33da3f1c SS |
10456 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10457 | putpkt (rs->buf); | |
ad91cd99 PA |
10458 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10459 | if (*reply == '\0') | |
33da3f1c | 10460 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10461 | if (strcmp (reply, "OK") != 0) |
10462 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10463 | } |
10464 | else if (val) | |
10465 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10466 | } |
10467 | ||
dc146f7c VP |
10468 | static int |
10469 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10470 | { | |
10471 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10472 | |
dc146f7c VP |
10473 | if (info && info->private) |
10474 | return info->private->core; | |
10475 | return -1; | |
10476 | } | |
10477 | ||
4daf5ac0 SS |
10478 | static void |
10479 | remote_set_circular_trace_buffer (int val) | |
10480 | { | |
10481 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10482 | char *reply; |
4daf5ac0 SS |
10483 | |
10484 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10485 | putpkt (rs->buf); | |
ad91cd99 PA |
10486 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10487 | if (*reply == '\0') | |
4daf5ac0 | 10488 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10489 | if (strcmp (reply, "OK") != 0) |
10490 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10491 | } |
10492 | ||
b3b9301e PA |
10493 | static struct traceframe_info * |
10494 | remote_traceframe_info (void) | |
10495 | { | |
10496 | char *text; | |
10497 | ||
10498 | text = target_read_stralloc (¤t_target, | |
10499 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10500 | if (text != NULL) | |
10501 | { | |
10502 | struct traceframe_info *info; | |
10503 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10504 | ||
10505 | info = parse_traceframe_info (text); | |
10506 | do_cleanups (back_to); | |
10507 | return info; | |
10508 | } | |
10509 | ||
10510 | return NULL; | |
10511 | } | |
10512 | ||
405f8e94 SS |
10513 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10514 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10515 | if the packet is not supported, and 0 if the minimum instruction | |
10516 | length is unknown. */ | |
10517 | ||
10518 | static int | |
10519 | remote_get_min_fast_tracepoint_insn_len (void) | |
10520 | { | |
10521 | struct remote_state *rs = get_remote_state (); | |
10522 | char *reply; | |
10523 | ||
10524 | sprintf (rs->buf, "qTMinFTPILen"); | |
10525 | putpkt (rs->buf); | |
10526 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10527 | if (*reply == '\0') | |
10528 | return -1; | |
10529 | else | |
10530 | { | |
10531 | ULONGEST min_insn_len; | |
10532 | ||
10533 | unpack_varlen_hex (reply, &min_insn_len); | |
10534 | ||
10535 | return (int) min_insn_len; | |
10536 | } | |
10537 | } | |
10538 | ||
f196051f SS |
10539 | static int |
10540 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10541 | { | |
10542 | struct remote_state *rs = get_remote_state (); | |
10543 | char *reply; | |
10544 | char *buf = rs->buf; | |
10545 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10546 | int nbytes; | |
10547 | ||
10548 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10549 | if (user) | |
10550 | { | |
10551 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10552 | nbytes = bin2hex (user, buf, 0); | |
10553 | buf += 2 * nbytes; | |
10554 | *buf++ = ';'; | |
10555 | } | |
10556 | if (notes) | |
10557 | { | |
10558 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10559 | nbytes = bin2hex (notes, buf, 0); | |
10560 | buf += 2 * nbytes; | |
10561 | *buf++ = ';'; | |
10562 | } | |
10563 | if (stop_notes) | |
10564 | { | |
10565 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10566 | nbytes = bin2hex (stop_notes, buf, 0); | |
10567 | buf += 2 * nbytes; | |
10568 | *buf++ = ';'; | |
10569 | } | |
10570 | /* Ensure the buffer is terminated. */ | |
10571 | *buf = '\0'; | |
10572 | ||
10573 | putpkt (rs->buf); | |
10574 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10575 | if (*reply == '\0') | |
10576 | return 0; | |
10577 | ||
10578 | if (strcmp (reply, "OK") != 0) | |
10579 | error (_("Bogus reply from target: %s"), reply); | |
10580 | ||
10581 | return 1; | |
10582 | } | |
10583 | ||
c906108c | 10584 | static void |
fba45db2 | 10585 | init_remote_ops (void) |
c906108c | 10586 | { |
c5aa993b | 10587 | remote_ops.to_shortname = "remote"; |
c906108c | 10588 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10589 | remote_ops.to_doc = |
c906108c | 10590 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10591 | Specify the serial device it is connected to\n\ |
10592 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10593 | remote_ops.to_open = remote_open; |
10594 | remote_ops.to_close = remote_close; | |
c906108c | 10595 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10596 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10597 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10598 | remote_ops.to_wait = remote_wait; |
10599 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10600 | remote_ops.to_store_registers = remote_store_registers; | |
10601 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10602 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10603 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10604 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10605 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10606 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10607 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
10608 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
10609 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10610 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10611 | remote_ops.to_region_ok_for_hw_watchpoint |
10612 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10613 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10614 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10615 | remote_ops.to_kill = remote_kill; |
10616 | remote_ops.to_load = generic_load; | |
c906108c | 10617 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10618 | remote_ops.to_pass_signals = remote_pass_signals; |
c906108c | 10619 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10620 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10621 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10622 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10623 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10624 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10625 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10626 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10627 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10628 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10629 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10630 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10631 | remote_ops.to_has_memory = default_child_has_memory; | |
10632 | remote_ops.to_has_stack = default_child_has_stack; | |
10633 | remote_ops.to_has_registers = default_child_has_registers; | |
10634 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10635 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10636 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10637 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10638 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10639 | remote_ops.to_flash_erase = remote_flash_erase; |
10640 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10641 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10642 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10643 | remote_ops.to_can_async_p = remote_can_async_p; |
10644 | remote_ops.to_is_async_p = remote_is_async_p; | |
10645 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10646 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10647 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10648 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10649 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
10650 | remote_ops.to_supports_disable_randomization |
10651 | = remote_supports_disable_randomization; | |
d248b706 | 10652 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 10653 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
35b1e5cc SS |
10654 | remote_ops.to_trace_init = remote_trace_init; |
10655 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 10656 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
10657 | remote_ops.to_download_trace_state_variable |
10658 | = remote_download_trace_state_variable; | |
d248b706 KY |
10659 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
10660 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
10661 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10662 | remote_ops.to_trace_start = remote_trace_start; | |
10663 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 10664 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
10665 | remote_ops.to_trace_stop = remote_trace_stop; |
10666 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10667 | remote_ops.to_get_trace_state_variable_value |
10668 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10669 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10670 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10671 | remote_ops.to_upload_trace_state_variables |
10672 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10673 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 10674 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 10675 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10676 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 10677 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 10678 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10679 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10680 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10681 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10682 | remote_ops.to_static_tracepoint_marker_at |
10683 | = remote_static_tracepoint_marker_at; | |
10684 | remote_ops.to_static_tracepoint_markers_by_strid | |
10685 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 10686 | remote_ops.to_traceframe_info = remote_traceframe_info; |
c906108c SS |
10687 | } |
10688 | ||
10689 | /* Set up the extended remote vector by making a copy of the standard | |
10690 | remote vector and adding to it. */ | |
10691 | ||
10692 | static void | |
fba45db2 | 10693 | init_extended_remote_ops (void) |
c906108c SS |
10694 | { |
10695 | extended_remote_ops = remote_ops; | |
10696 | ||
0f71a2f6 | 10697 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10698 | extended_remote_ops.to_longname = |
c906108c | 10699 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10700 | extended_remote_ops.to_doc = |
c906108c | 10701 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10702 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10703 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10704 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10705 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10706 | extended_remote_ops.to_detach = extended_remote_detach; |
10707 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10708 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
10709 | extended_remote_ops.to_supports_disable_randomization |
10710 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
10711 | } |
10712 | ||
6426a772 JM |
10713 | static int |
10714 | remote_can_async_p (void) | |
10715 | { | |
c6ebd6cf | 10716 | if (!target_async_permitted) |
75c99385 PA |
10717 | /* We only enable async when the user specifically asks for it. */ |
10718 | return 0; | |
10719 | ||
23860348 | 10720 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10721 | return serial_can_async_p (remote_desc); |
6426a772 JM |
10722 | } |
10723 | ||
10724 | static int | |
10725 | remote_is_async_p (void) | |
10726 | { | |
c6ebd6cf | 10727 | if (!target_async_permitted) |
75c99385 PA |
10728 | /* We only enable async when the user specifically asks for it. */ |
10729 | return 0; | |
10730 | ||
23860348 | 10731 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10732 | return serial_is_async_p (remote_desc); |
6426a772 JM |
10733 | } |
10734 | ||
2acceee2 JM |
10735 | /* Pass the SERIAL event on and up to the client. One day this code |
10736 | will be able to delay notifying the client of an event until the | |
23860348 | 10737 | point where an entire packet has been received. */ |
2acceee2 | 10738 | |
2bc416ba | 10739 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10740 | void *context); |
2acceee2 JM |
10741 | static void *async_client_context; |
10742 | static serial_event_ftype remote_async_serial_handler; | |
10743 | ||
6426a772 | 10744 | static void |
819cc324 | 10745 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10746 | { |
2acceee2 JM |
10747 | /* Don't propogate error information up to the client. Instead let |
10748 | the client find out about the error by querying the target. */ | |
10749 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10750 | } | |
10751 | ||
74531fed PA |
10752 | static void |
10753 | remote_async_inferior_event_handler (gdb_client_data data) | |
10754 | { | |
10755 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10756 | } | |
10757 | ||
10758 | static void | |
10759 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10760 | { | |
10761 | remote_get_pending_stop_replies (); | |
10762 | } | |
10763 | ||
2acceee2 | 10764 | static void |
2bc416ba | 10765 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10766 | void *context), void *context) |
2acceee2 JM |
10767 | { |
10768 | if (callback != NULL) | |
10769 | { | |
2cd58942 | 10770 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10771 | async_client_callback = callback; |
10772 | async_client_context = context; | |
10773 | } | |
10774 | else | |
2cd58942 | 10775 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10776 | } |
10777 | ||
5a2468f5 | 10778 | static void |
c2d11a7d | 10779 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10780 | { |
427c3a89 | 10781 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10782 | } |
10783 | ||
d471ea57 AC |
10784 | static void |
10785 | show_remote_cmd (char *args, int from_tty) | |
10786 | { | |
37a105a1 | 10787 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 10788 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
10789 | struct cleanup *showlist_chain; |
10790 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 10791 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
10792 | |
10793 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
10794 | for (; list != NULL; list = list->next) | |
10795 | if (strcmp (list->name, "Z-packet") == 0) | |
10796 | continue; | |
427c3a89 DJ |
10797 | else if (list->type == not_set_cmd) |
10798 | /* Alias commands are exactly like the original, except they | |
10799 | don't have the normal type. */ | |
10800 | continue; | |
10801 | else | |
37a105a1 DJ |
10802 | { |
10803 | struct cleanup *option_chain | |
10804 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 10805 | |
37a105a1 DJ |
10806 | ui_out_field_string (uiout, "name", list->name); |
10807 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
10808 | if (list->type == show_cmd) |
10809 | do_setshow_command ((char *) NULL, from_tty, list); | |
10810 | else | |
10811 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
10812 | /* Close the tuple. */ |
10813 | do_cleanups (option_chain); | |
10814 | } | |
427c3a89 DJ |
10815 | |
10816 | /* Close the tuple. */ | |
10817 | do_cleanups (showlist_chain); | |
d471ea57 | 10818 | } |
5a2468f5 | 10819 | |
0f71a2f6 | 10820 | |
23860348 | 10821 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
10822 | static void |
10823 | remote_new_objfile (struct objfile *objfile) | |
10824 | { | |
23860348 | 10825 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 10826 | remote_check_symbols (objfile); |
dc8acb97 MS |
10827 | } |
10828 | ||
00bf0b85 SS |
10829 | /* Pull all the tracepoints defined on the target and create local |
10830 | data structures representing them. We don't want to create real | |
10831 | tracepoints yet, we don't want to mess up the user's existing | |
10832 | collection. */ | |
10833 | ||
10834 | static int | |
10835 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 10836 | { |
00bf0b85 SS |
10837 | struct remote_state *rs = get_remote_state (); |
10838 | char *p; | |
d5551862 | 10839 | |
00bf0b85 SS |
10840 | /* Ask for a first packet of tracepoint definition. */ |
10841 | putpkt ("qTfP"); | |
10842 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10843 | p = rs->buf; | |
10844 | while (*p && *p != 'l') | |
d5551862 | 10845 | { |
00bf0b85 SS |
10846 | parse_tracepoint_definition (p, utpp); |
10847 | /* Ask for another packet of tracepoint definition. */ | |
10848 | putpkt ("qTsP"); | |
10849 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10850 | p = rs->buf; | |
d5551862 | 10851 | } |
00bf0b85 | 10852 | return 0; |
d5551862 SS |
10853 | } |
10854 | ||
00bf0b85 SS |
10855 | static int |
10856 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 10857 | { |
00bf0b85 | 10858 | struct remote_state *rs = get_remote_state (); |
d5551862 | 10859 | char *p; |
d5551862 | 10860 | |
00bf0b85 SS |
10861 | /* Ask for a first packet of variable definition. */ |
10862 | putpkt ("qTfV"); | |
d5551862 SS |
10863 | getpkt (&rs->buf, &rs->buf_size, 0); |
10864 | p = rs->buf; | |
00bf0b85 | 10865 | while (*p && *p != 'l') |
d5551862 | 10866 | { |
00bf0b85 SS |
10867 | parse_tsv_definition (p, utsvp); |
10868 | /* Ask for another packet of variable definition. */ | |
10869 | putpkt ("qTsV"); | |
d5551862 SS |
10870 | getpkt (&rs->buf, &rs->buf_size, 0); |
10871 | p = rs->buf; | |
10872 | } | |
00bf0b85 | 10873 | return 0; |
d5551862 SS |
10874 | } |
10875 | ||
c906108c | 10876 | void |
fba45db2 | 10877 | _initialize_remote (void) |
c906108c | 10878 | { |
ea9c271d | 10879 | struct remote_state *rs; |
9a7071a8 JB |
10880 | struct cmd_list_element *cmd; |
10881 | char *cmd_name; | |
ea9c271d | 10882 | |
0f71a2f6 | 10883 | /* architecture specific data */ |
2bc416ba | 10884 | remote_gdbarch_data_handle = |
23860348 | 10885 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
10886 | remote_g_packet_data_handle = |
10887 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 10888 | |
ea9c271d DJ |
10889 | /* Initialize the per-target state. At the moment there is only one |
10890 | of these, not one per target. Only one target is active at a | |
10891 | time. The default buffer size is unimportant; it will be expanded | |
10892 | whenever a larger buffer is needed. */ | |
0b83947e | 10893 | rs = get_remote_state_raw (); |
ea9c271d DJ |
10894 | rs->buf_size = 400; |
10895 | rs->buf = xmalloc (rs->buf_size); | |
10896 | ||
c906108c SS |
10897 | init_remote_ops (); |
10898 | add_target (&remote_ops); | |
10899 | ||
10900 | init_extended_remote_ops (); | |
10901 | add_target (&extended_remote_ops); | |
cce74817 | 10902 | |
dc8acb97 | 10903 | /* Hook into new objfile notification. */ |
06d3b283 | 10904 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 10905 | |
b803fb0f DJ |
10906 | /* Set up signal handlers. */ |
10907 | sigint_remote_token = | |
10908 | create_async_signal_handler (async_remote_interrupt, NULL); | |
10909 | sigint_remote_twice_token = | |
6d549500 | 10910 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 10911 | |
c906108c SS |
10912 | #if 0 |
10913 | init_remote_threadtests (); | |
10914 | #endif | |
10915 | ||
23860348 | 10916 | /* set/show remote ... */ |
d471ea57 | 10917 | |
1bedd215 | 10918 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
10919 | Remote protocol specific variables\n\ |
10920 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10921 | the packets being used"), |
cff3e48b | 10922 | &remote_set_cmdlist, "set remote ", |
23860348 | 10923 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 10924 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
10925 | Remote protocol specific variables\n\ |
10926 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10927 | the packets being used"), |
cff3e48b | 10928 | &remote_show_cmdlist, "show remote ", |
23860348 | 10929 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 10930 | |
1a966eab AC |
10931 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
10932 | Compare section data on target to the exec file.\n\ | |
10933 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
10934 | &cmdlist); |
10935 | ||
1a966eab AC |
10936 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
10937 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
10938 | maintenance packet TEXT\n\ |
10939 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
10940 | this command sends the string TEXT to the inferior, and displays the\n\ | |
10941 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 10942 | terminating `#' character and checksum."), |
c906108c SS |
10943 | &maintenancelist); |
10944 | ||
7915a72c AC |
10945 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
10946 | Set whether to send break if interrupted."), _("\ | |
10947 | Show whether to send break if interrupted."), _("\ | |
10948 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 10949 | set_remotebreak, show_remotebreak, |
e707bbc2 | 10950 | &setlist, &showlist); |
9a7071a8 JB |
10951 | cmd_name = "remotebreak"; |
10952 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
10953 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
10954 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
10955 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
10956 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
10957 | ||
10958 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
10959 | interrupt_sequence_modes, &interrupt_sequence_mode, |
10960 | _("\ | |
9a7071a8 JB |
10961 | Set interrupt sequence to remote target."), _("\ |
10962 | Show interrupt sequence to remote target."), _("\ | |
10963 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
10964 | NULL, show_interrupt_sequence, | |
10965 | &remote_set_cmdlist, | |
10966 | &remote_show_cmdlist); | |
10967 | ||
10968 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
10969 | &interrupt_on_connect, _("\ | |
10970 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10971 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10972 | If set, interrupt sequence is sent to remote target."), | |
10973 | NULL, NULL, | |
10974 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 10975 | |
23860348 | 10976 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 10977 | |
1a966eab AC |
10978 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
10979 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 10980 | &setlist); |
1a966eab AC |
10981 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
10982 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
10983 | &showlist); |
10984 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
10985 | set_memory_write_packet_size, _("\ |
10986 | Set the maximum number of bytes per memory-write packet.\n\ | |
10987 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10988 | default packet size. The actual limit is further reduced\n\ | |
10989 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10990 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10991 | &remote_set_cmdlist); |
10992 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
10993 | set_memory_read_packet_size, _("\ |
10994 | Set the maximum number of bytes per memory-read packet.\n\ | |
10995 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10996 | default packet size. The actual limit is further reduced\n\ | |
10997 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10998 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10999 | &remote_set_cmdlist); |
11000 | add_cmd ("memory-write-packet-size", no_class, | |
11001 | show_memory_write_packet_size, | |
1a966eab | 11002 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11003 | &remote_show_cmdlist); |
11004 | add_cmd ("memory-read-packet-size", no_class, | |
11005 | show_memory_read_packet_size, | |
1a966eab | 11006 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11007 | &remote_show_cmdlist); |
c906108c | 11008 | |
b3f42336 | 11009 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11010 | &remote_hw_watchpoint_limit, _("\ |
11011 | Set the maximum number of target hardware watchpoints."), _("\ | |
11012 | Show the maximum number of target hardware watchpoints."), _("\ | |
11013 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11014 | NULL, NULL, /* FIXME: i18n: The maximum |
11015 | number of target hardware | |
11016 | watchpoints is %s. */ | |
b3f42336 | 11017 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11018 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11019 | &remote_hw_watchpoint_length_limit, _("\ | |
11020 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11021 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11022 | Specify a negative limit for unlimited."), | |
11023 | NULL, NULL, /* FIXME: i18n: The maximum | |
11024 | length (in bytes) of a target | |
11025 | hardware watchpoint is %s. */ | |
11026 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11027 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11028 | &remote_hw_breakpoint_limit, _("\ |
11029 | Set the maximum number of target hardware breakpoints."), _("\ | |
11030 | Show the maximum number of target hardware breakpoints."), _("\ | |
11031 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11032 | NULL, NULL, /* FIXME: i18n: The maximum |
11033 | number of target hardware | |
11034 | breakpoints is %s. */ | |
b3f42336 | 11035 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11036 | |
4d28ad1e AC |
11037 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
11038 | &remote_address_size, _("\ | |
11039 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
11040 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
11041 | NULL, | |
11042 | NULL, /* FIXME: i18n: */ | |
11043 | &setlist, &showlist); | |
c906108c | 11044 | |
444abaca | 11045 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11046 | "X", "binary-download", 1); |
0f71a2f6 | 11047 | |
444abaca | 11048 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11049 | "vCont", "verbose-resume", 0); |
506fb367 | 11050 | |
89be2091 DJ |
11051 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11052 | "QPassSignals", "pass-signals", 0); | |
11053 | ||
444abaca | 11054 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11055 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11056 | |
444abaca | 11057 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11058 | "P", "set-register", 1); |
d471ea57 | 11059 | |
444abaca | 11060 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11061 | "p", "fetch-register", 1); |
b96ec7ac | 11062 | |
444abaca | 11063 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11064 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11065 | |
444abaca | 11066 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11067 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11068 | |
444abaca | 11069 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11070 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11071 | |
444abaca | 11072 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11073 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11074 | |
444abaca | 11075 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11076 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11077 | |
0876f84a DJ |
11078 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11079 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11080 | |
23181151 DJ |
11081 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11082 | "qXfer:features:read", "target-features", 0); | |
11083 | ||
cfa9d6d9 DJ |
11084 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11085 | "qXfer:libraries:read", "library-info", 0); | |
11086 | ||
2268b414 JK |
11087 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11088 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11089 | ||
fd79ecee DJ |
11090 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11091 | "qXfer:memory-map:read", "memory-map", 0); | |
11092 | ||
0e7f50da UW |
11093 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11094 | "qXfer:spu:read", "read-spu-object", 0); | |
11095 | ||
11096 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11097 | "qXfer:spu:write", "write-spu-object", 0); | |
11098 | ||
07e059b5 VP |
11099 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11100 | "qXfer:osdata:read", "osdata", 0); | |
11101 | ||
dc146f7c VP |
11102 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11103 | "qXfer:threads:read", "threads", 0); | |
11104 | ||
4aa995e1 PA |
11105 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11106 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11107 | ||
11108 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11109 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11110 | ||
b3b9301e PA |
11111 | add_packet_config_cmd |
11112 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11113 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11114 | ||
444abaca | 11115 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11116 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11117 | 0); |
11118 | ||
711e434b PM |
11119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11120 | "qGetTIBAddr", "get-thread-information-block-address", | |
11121 | 0); | |
11122 | ||
40ab02ce MS |
11123 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11124 | "bc", "reverse-continue", 0); | |
11125 | ||
11126 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11127 | "bs", "reverse-step", 0); | |
11128 | ||
be2a5f71 DJ |
11129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11130 | "qSupported", "supported-packets", 0); | |
11131 | ||
08388c79 DE |
11132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11133 | "qSearch:memory", "search-memory", 0); | |
11134 | ||
a6b151f1 DJ |
11135 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11136 | "vFile:open", "hostio-open", 0); | |
11137 | ||
11138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11139 | "vFile:pread", "hostio-pread", 0); | |
11140 | ||
11141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11142 | "vFile:pwrite", "hostio-pwrite", 0); | |
11143 | ||
11144 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11145 | "vFile:close", "hostio-close", 0); | |
11146 | ||
11147 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11148 | "vFile:unlink", "hostio-unlink", 0); | |
11149 | ||
2d717e4f DJ |
11150 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11151 | "vAttach", "attach", 0); | |
11152 | ||
11153 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11154 | "vRun", "run", 0); | |
11155 | ||
a6f3e723 SL |
11156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11157 | "QStartNoAckMode", "noack", 0); | |
11158 | ||
82f73884 PA |
11159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11160 | "vKill", "kill", 0); | |
11161 | ||
0b16c5cf PA |
11162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11163 | "qAttached", "query-attached", 0); | |
11164 | ||
782b2b07 | 11165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11166 | "ConditionalTracepoints", |
11167 | "conditional-tracepoints", 0); | |
7a697b8d SS |
11168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11169 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11170 | |
409873ef SS |
11171 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11172 | "TracepointSource", "TracepointSource", 0); | |
11173 | ||
d914c394 SS |
11174 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11175 | "QAllow", "allow", 0); | |
11176 | ||
0fb4aa4b PA |
11177 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11178 | "StaticTracepoints", "static-tracepoints", 0); | |
11179 | ||
1e4d1764 YQ |
11180 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11181 | "InstallInTrace", "install-in-trace", 0); | |
11182 | ||
0fb4aa4b PA |
11183 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11184 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11185 | ||
78d85199 YQ |
11186 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11187 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11188 | ||
03583c20 UW |
11189 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11190 | "QDisableRandomization", "disable-randomization", 0); | |
11191 | ||
37a105a1 DJ |
11192 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11193 | Z sub-packet has its own set and show commands, but users may | |
11194 | have sets to this variable in their .gdbinit files (or in their | |
11195 | documentation). */ | |
e9e68a56 | 11196 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11197 | &remote_Z_packet_detect, _("\ |
11198 | Set use of remote protocol `Z' packets"), _("\ | |
11199 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11200 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11201 | packets."), |
e9e68a56 | 11202 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11203 | show_remote_protocol_Z_packet_cmd, |
11204 | /* FIXME: i18n: Use of remote protocol | |
11205 | `Z' packets is %s. */ | |
e9e68a56 | 11206 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11207 | |
a6b151f1 DJ |
11208 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11209 | Manipulate files on the remote system\n\ | |
11210 | Transfer files to and from the remote target system."), | |
11211 | &remote_cmdlist, "remote ", | |
11212 | 0 /* allow-unknown */, &cmdlist); | |
11213 | ||
11214 | add_cmd ("put", class_files, remote_put_command, | |
11215 | _("Copy a local file to the remote system."), | |
11216 | &remote_cmdlist); | |
11217 | ||
11218 | add_cmd ("get", class_files, remote_get_command, | |
11219 | _("Copy a remote file to the local system."), | |
11220 | &remote_cmdlist); | |
11221 | ||
11222 | add_cmd ("delete", class_files, remote_delete_command, | |
11223 | _("Delete a remote file."), | |
11224 | &remote_cmdlist); | |
11225 | ||
2d717e4f DJ |
11226 | remote_exec_file = xstrdup (""); |
11227 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11228 | &remote_exec_file, _("\ | |
11229 | Set the remote pathname for \"run\""), _("\ | |
11230 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11231 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11232 | ||
449092f6 CV |
11233 | /* Eventually initialize fileio. See fileio.c */ |
11234 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11235 | |
11236 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11237 | special ptids with it set to != 0. */ | |
82f73884 PA |
11238 | magic_null_ptid = ptid_build (42000, 1, -1); |
11239 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11240 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11241 | |
11242 | target_buf_size = 2048; | |
11243 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11244 | } |
10760264 | 11245 |