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 | { | |
901f9912 | 362 | return rs->multi_process_aware; |
82f73884 PA |
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"; | |
40478521 | 745 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
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, | |
b9e7b9c3 | 1241 | PACKET_vFile_readlink, |
0876f84a | 1242 | PACKET_qXfer_auxv, |
23181151 | 1243 | PACKET_qXfer_features, |
cfa9d6d9 | 1244 | PACKET_qXfer_libraries, |
2268b414 | 1245 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1246 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1247 | PACKET_qXfer_spu_read, |
1248 | PACKET_qXfer_spu_write, | |
07e059b5 | 1249 | PACKET_qXfer_osdata, |
dc146f7c | 1250 | PACKET_qXfer_threads, |
0fb4aa4b | 1251 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1252 | PACKET_qXfer_traceframe_info, |
711e434b | 1253 | PACKET_qGetTIBAddr, |
444abaca | 1254 | PACKET_qGetTLSAddr, |
be2a5f71 | 1255 | PACKET_qSupported, |
89be2091 | 1256 | PACKET_QPassSignals, |
08388c79 | 1257 | PACKET_qSearch_memory, |
2d717e4f DJ |
1258 | PACKET_vAttach, |
1259 | PACKET_vRun, | |
a6f3e723 | 1260 | PACKET_QStartNoAckMode, |
82f73884 | 1261 | PACKET_vKill, |
4aa995e1 PA |
1262 | PACKET_qXfer_siginfo_read, |
1263 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1264 | PACKET_qAttached, |
782b2b07 | 1265 | PACKET_ConditionalTracepoints, |
7a697b8d | 1266 | PACKET_FastTracepoints, |
0fb4aa4b | 1267 | PACKET_StaticTracepoints, |
1e4d1764 | 1268 | PACKET_InstallInTrace, |
40ab02ce MS |
1269 | PACKET_bc, |
1270 | PACKET_bs, | |
409873ef | 1271 | PACKET_TracepointSource, |
d914c394 | 1272 | PACKET_QAllow, |
78d85199 | 1273 | PACKET_qXfer_fdpic, |
03583c20 | 1274 | PACKET_QDisableRandomization, |
444abaca DJ |
1275 | PACKET_MAX |
1276 | }; | |
506fb367 | 1277 | |
444abaca | 1278 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1279 | |
1280 | static void | |
444abaca DJ |
1281 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1282 | struct cmd_list_element *c) | |
dc8acb97 | 1283 | { |
444abaca | 1284 | struct packet_config *packet; |
dc8acb97 | 1285 | |
444abaca DJ |
1286 | for (packet = remote_protocol_packets; |
1287 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1288 | packet++) | |
1289 | { | |
1290 | if (&packet->detect == c->var) | |
1291 | { | |
1292 | update_packet_config (packet); | |
1293 | return; | |
1294 | } | |
1295 | } | |
9b20d036 | 1296 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1297 | c->name); |
dc8acb97 MS |
1298 | } |
1299 | ||
5a2468f5 | 1300 | static void |
444abaca DJ |
1301 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1302 | struct cmd_list_element *c, | |
1303 | const char *value) | |
5a2468f5 | 1304 | { |
444abaca | 1305 | struct packet_config *packet; |
5a2468f5 | 1306 | |
444abaca DJ |
1307 | for (packet = remote_protocol_packets; |
1308 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1309 | packet++) | |
1310 | { | |
1311 | if (&packet->detect == c->var) | |
1312 | { | |
1313 | show_packet_config_cmd (packet); | |
1314 | return; | |
1315 | } | |
1316 | } | |
9b20d036 | 1317 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1318 | c->name); |
5a2468f5 JM |
1319 | } |
1320 | ||
d471ea57 AC |
1321 | /* Should we try one of the 'Z' requests? */ |
1322 | ||
1323 | enum Z_packet_type | |
1324 | { | |
1325 | Z_PACKET_SOFTWARE_BP, | |
1326 | Z_PACKET_HARDWARE_BP, | |
1327 | Z_PACKET_WRITE_WP, | |
1328 | Z_PACKET_READ_WP, | |
1329 | Z_PACKET_ACCESS_WP, | |
1330 | NR_Z_PACKET_TYPES | |
1331 | }; | |
96baa820 | 1332 | |
d471ea57 | 1333 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1334 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1335 | |
7f19b9a2 | 1336 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1337 | |
1338 | static void | |
fba45db2 KB |
1339 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1340 | struct cmd_list_element *c) | |
96baa820 | 1341 | { |
d471ea57 | 1342 | int i; |
a744cf53 | 1343 | |
d471ea57 AC |
1344 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1345 | { | |
444abaca DJ |
1346 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1347 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1348 | } |
96baa820 JM |
1349 | } |
1350 | ||
1351 | static void | |
08546159 AC |
1352 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1353 | struct cmd_list_element *c, | |
1354 | const char *value) | |
96baa820 | 1355 | { |
d471ea57 | 1356 | int i; |
a744cf53 | 1357 | |
d471ea57 AC |
1358 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1359 | { | |
444abaca | 1360 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1361 | } |
96baa820 JM |
1362 | } |
1363 | ||
9d1f7ab2 MS |
1364 | /* Should we try the 'ThreadInfo' query packet? |
1365 | ||
1366 | This variable (NOT available to the user: auto-detect only!) | |
1367 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1368 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1369 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1370 | and set to false when the target fails to recognize it). */ |
1371 | ||
1372 | static int use_threadinfo_query; | |
1373 | static int use_threadextra_query; | |
1374 | ||
23860348 | 1375 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1376 | static struct async_signal_handler *sigint_remote_twice_token; |
1377 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1378 | |
74531fed PA |
1379 | \f |
1380 | /* Asynchronous signal handle registered as event loop source for | |
1381 | when we have pending events ready to be passed to the core. */ | |
1382 | ||
1383 | static struct async_event_handler *remote_async_inferior_event_token; | |
1384 | ||
1385 | /* Asynchronous signal handle registered as event loop source for when | |
1386 | the remote sent us a %Stop notification. The registered callback | |
1387 | will do a vStopped sequence to pull the rest of the events out of | |
1388 | the remote side into our event queue. */ | |
1389 | ||
1390 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1391 | \f |
1392 | ||
79d7f229 PA |
1393 | static ptid_t magic_null_ptid; |
1394 | static ptid_t not_sent_ptid; | |
1395 | static ptid_t any_thread_ptid; | |
1396 | ||
1397 | /* These are the threads which we last sent to the remote system. The | |
1398 | TID member will be -1 for all or -2 for not sent yet. */ | |
1399 | ||
1400 | static ptid_t general_thread; | |
1401 | static ptid_t continue_thread; | |
c5aa993b | 1402 | |
e6e4e701 PA |
1403 | /* This the traceframe which we last selected on the remote system. |
1404 | It will be -1 if no traceframe is selected. */ | |
1405 | static int remote_traceframe_number = -1; | |
1406 | ||
0b16c5cf PA |
1407 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1408 | detach instead of killing it when bailing out). */ | |
1409 | ||
1410 | static int | |
1411 | remote_query_attached (int pid) | |
1412 | { | |
1413 | struct remote_state *rs = get_remote_state (); | |
1414 | ||
1415 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1416 | return 0; | |
1417 | ||
1418 | if (remote_multi_process_p (rs)) | |
1419 | sprintf (rs->buf, "qAttached:%x", pid); | |
1420 | else | |
1421 | sprintf (rs->buf, "qAttached"); | |
1422 | ||
1423 | putpkt (rs->buf); | |
1424 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1425 | ||
1426 | switch (packet_ok (rs->buf, | |
1554e9be | 1427 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1428 | { |
1429 | case PACKET_OK: | |
1430 | if (strcmp (rs->buf, "1") == 0) | |
1431 | return 1; | |
1432 | break; | |
1433 | case PACKET_ERROR: | |
1434 | warning (_("Remote failure reply: %s"), rs->buf); | |
1435 | break; | |
1436 | case PACKET_UNKNOWN: | |
1437 | break; | |
1438 | } | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
49c62f2e PA |
1443 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1444 | has been invented by GDB, instead of reported by the target. Since | |
1445 | we can be connected to a remote system before before knowing about | |
1446 | any inferior, mark the target with execution when we find the first | |
1447 | inferior. If ATTACHED is 1, then we had just attached to this | |
1448 | inferior. If it is 0, then we just created this inferior. If it | |
1449 | is -1, then try querying the remote stub to find out if it had | |
1450 | attached to the inferior or not. */ | |
1941c569 PA |
1451 | |
1452 | static struct inferior * | |
49c62f2e | 1453 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1454 | { |
1941c569 PA |
1455 | struct inferior *inf; |
1456 | ||
0b16c5cf PA |
1457 | /* Check whether this process we're learning about is to be |
1458 | considered attached, or if is to be considered to have been | |
1459 | spawned by the stub. */ | |
1460 | if (attached == -1) | |
1461 | attached = remote_query_attached (pid); | |
1462 | ||
6c95b8df PA |
1463 | if (gdbarch_has_global_solist (target_gdbarch)) |
1464 | { | |
1465 | /* If the target shares code across all inferiors, then every | |
1466 | attach adds a new inferior. */ | |
1467 | inf = add_inferior (pid); | |
1468 | ||
1469 | /* ... and every inferior is bound to the same program space. | |
1470 | However, each inferior may still have its own address | |
1471 | space. */ | |
1472 | inf->aspace = maybe_new_address_space (); | |
1473 | inf->pspace = current_program_space; | |
1474 | } | |
1475 | else | |
1476 | { | |
1477 | /* In the traditional debugging scenario, there's a 1-1 match | |
1478 | between program/address spaces. We simply bind the inferior | |
1479 | to the program space's address space. */ | |
1480 | inf = current_inferior (); | |
1481 | inferior_appeared (inf, pid); | |
1482 | } | |
1941c569 | 1483 | |
0b16c5cf | 1484 | inf->attach_flag = attached; |
49c62f2e | 1485 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1486 | |
1941c569 PA |
1487 | return inf; |
1488 | } | |
1489 | ||
1490 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1491 | according to RUNNING. */ | |
1492 | ||
c906108c | 1493 | static void |
1941c569 | 1494 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1495 | { |
1941c569 PA |
1496 | add_thread (ptid); |
1497 | ||
1498 | set_executing (ptid, running); | |
1499 | set_running (ptid, running); | |
1500 | } | |
1501 | ||
1502 | /* Come here when we learn about a thread id from the remote target. | |
1503 | It may be the first time we hear about such thread, so take the | |
1504 | opportunity to add it to GDB's thread list. In case this is the | |
1505 | first time we're noticing its corresponding inferior, add it to | |
1506 | GDB's inferior list as well. */ | |
1507 | ||
1508 | static void | |
1509 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1510 | { | |
c906108c SS |
1511 | /* If this is a new thread, add it to GDB's thread list. |
1512 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1513 | |
1514 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1515 | { | |
1516 | /* We're seeing an event on a thread id we knew had exited. | |
1517 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1518 | remote_add_thread (currthread, running); |
82f73884 PA |
1519 | return; |
1520 | } | |
1521 | ||
79d7f229 | 1522 | if (!in_thread_list (currthread)) |
c0a2216e | 1523 | { |
1941c569 | 1524 | struct inferior *inf = NULL; |
bad34192 | 1525 | int pid = ptid_get_pid (currthread); |
1941c569 | 1526 | |
bad34192 PA |
1527 | if (ptid_is_pid (inferior_ptid) |
1528 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1529 | { |
1530 | /* inferior_ptid has no thread member yet. This can happen | |
1531 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1532 | stub doesn't support qC. This is the first stop reported | |
1533 | after an attach, so this is the main thread. Update the | |
1534 | ptid in the thread list. */ | |
bad34192 PA |
1535 | if (in_thread_list (pid_to_ptid (pid))) |
1536 | thread_change_ptid (inferior_ptid, currthread); | |
1537 | else | |
1538 | { | |
1539 | remote_add_thread (currthread, running); | |
1540 | inferior_ptid = currthread; | |
1541 | } | |
dc146f7c | 1542 | return; |
c0a2216e | 1543 | } |
82f73884 PA |
1544 | |
1545 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1546 | { |
1547 | /* inferior_ptid is not set yet. This can happen with the | |
1548 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1549 | doesn't support qC. This is the first stop reported | |
1550 | after an attach, so this is the main thread. Update the | |
1551 | ptid in the thread list. */ | |
dc146f7c | 1552 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1553 | return; |
c0a2216e | 1554 | } |
82f73884 | 1555 | |
29c87f7f PA |
1556 | /* When connecting to a target remote, or to a target |
1557 | extended-remote which already was debugging an inferior, we | |
1558 | may not know about it yet. Add it before adding its child | |
1559 | thread, so notifications are emitted in a sensible order. */ | |
1560 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1561 | { |
1562 | struct remote_state *rs = get_remote_state (); | |
1563 | int fake_pid_p = !remote_multi_process_p (rs); | |
1564 | ||
1565 | inf = remote_add_inferior (fake_pid_p, | |
1566 | ptid_get_pid (currthread), -1); | |
1567 | } | |
29c87f7f | 1568 | |
82f73884 | 1569 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1570 | remote_add_thread (currthread, running); |
1571 | ||
1572 | /* If we found a new inferior, let the common code do whatever | |
1573 | it needs to with it (e.g., read shared libraries, insert | |
1574 | breakpoints). */ | |
1575 | if (inf != NULL) | |
1576 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1577 | } |
c906108c SS |
1578 | } |
1579 | ||
dc146f7c VP |
1580 | /* Return the private thread data, creating it if necessary. */ |
1581 | ||
1582 | struct private_thread_info * | |
1583 | demand_private_info (ptid_t ptid) | |
1584 | { | |
1585 | struct thread_info *info = find_thread_ptid (ptid); | |
1586 | ||
1587 | gdb_assert (info); | |
1588 | ||
1589 | if (!info->private) | |
1590 | { | |
1591 | info->private = xmalloc (sizeof (*(info->private))); | |
1592 | info->private_dtor = free_private_thread_info; | |
1593 | info->private->core = -1; | |
1594 | info->private->extra = 0; | |
1595 | } | |
1596 | ||
1597 | return info->private; | |
1598 | } | |
1599 | ||
74531fed PA |
1600 | /* Call this function as a result of |
1601 | 1) A halt indication (T packet) containing a thread id | |
1602 | 2) A direct query of currthread | |
0df8b418 | 1603 | 3) Successful execution of set thread */ |
74531fed PA |
1604 | |
1605 | static void | |
1606 | record_currthread (ptid_t currthread) | |
1607 | { | |
1608 | general_thread = currthread; | |
74531fed PA |
1609 | } |
1610 | ||
89be2091 DJ |
1611 | static char *last_pass_packet; |
1612 | ||
1613 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1614 | it can simply pass through to the inferior without reporting. */ | |
1615 | ||
1616 | static void | |
2455069d | 1617 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1618 | { |
1619 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1620 | { | |
1621 | char *pass_packet, *p; | |
89be2091 DJ |
1622 | int count = 0, i; |
1623 | ||
1624 | gdb_assert (numsigs < 256); | |
1625 | for (i = 0; i < numsigs; i++) | |
1626 | { | |
2455069d | 1627 | if (pass_signals[i]) |
89be2091 DJ |
1628 | count++; |
1629 | } | |
1630 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1631 | strcpy (pass_packet, "QPassSignals:"); | |
1632 | p = pass_packet + strlen (pass_packet); | |
1633 | for (i = 0; i < numsigs; i++) | |
1634 | { | |
2455069d | 1635 | if (pass_signals[i]) |
89be2091 DJ |
1636 | { |
1637 | if (i >= 16) | |
1638 | *p++ = tohex (i >> 4); | |
1639 | *p++ = tohex (i & 15); | |
1640 | if (count) | |
1641 | *p++ = ';'; | |
1642 | else | |
1643 | break; | |
1644 | count--; | |
1645 | } | |
1646 | } | |
1647 | *p = 0; | |
1648 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1649 | { | |
1650 | struct remote_state *rs = get_remote_state (); | |
1651 | char *buf = rs->buf; | |
1652 | ||
1653 | putpkt (pass_packet); | |
1654 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1655 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1656 | if (last_pass_packet) | |
1657 | xfree (last_pass_packet); | |
1658 | last_pass_packet = pass_packet; | |
1659 | } | |
1660 | else | |
1661 | xfree (pass_packet); | |
1662 | } | |
1663 | } | |
1664 | ||
79d7f229 PA |
1665 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1666 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1667 | thread. If GEN is set, set the general thread, if not, then set | |
1668 | the step/continue thread. */ | |
c906108c | 1669 | static void |
79d7f229 | 1670 | set_thread (struct ptid ptid, int gen) |
c906108c | 1671 | { |
d01949b6 | 1672 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1673 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1674 | char *buf = rs->buf; |
79d7f229 | 1675 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1676 | |
79d7f229 | 1677 | if (ptid_equal (state, ptid)) |
c906108c SS |
1678 | return; |
1679 | ||
79d7f229 PA |
1680 | *buf++ = 'H'; |
1681 | *buf++ = gen ? 'g' : 'c'; | |
1682 | if (ptid_equal (ptid, magic_null_ptid)) | |
1683 | xsnprintf (buf, endbuf - buf, "0"); | |
1684 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1685 | xsnprintf (buf, endbuf - buf, "0"); | |
1686 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1687 | xsnprintf (buf, endbuf - buf, "-1"); | |
1688 | else | |
82f73884 | 1689 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1690 | putpkt (rs->buf); |
6d820c5c | 1691 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1692 | if (gen) |
79d7f229 | 1693 | general_thread = ptid; |
c906108c | 1694 | else |
79d7f229 | 1695 | continue_thread = ptid; |
c906108c | 1696 | } |
79d7f229 PA |
1697 | |
1698 | static void | |
1699 | set_general_thread (struct ptid ptid) | |
1700 | { | |
1701 | set_thread (ptid, 1); | |
1702 | } | |
1703 | ||
1704 | static void | |
1705 | set_continue_thread (struct ptid ptid) | |
1706 | { | |
1707 | set_thread (ptid, 0); | |
1708 | } | |
1709 | ||
3c9c4b83 PA |
1710 | /* Change the remote current process. Which thread within the process |
1711 | ends up selected isn't important, as long as it is the same process | |
1712 | as what INFERIOR_PTID points to. | |
1713 | ||
1714 | This comes from that fact that there is no explicit notion of | |
1715 | "selected process" in the protocol. The selected process for | |
1716 | general operations is the process the selected general thread | |
1717 | belongs to. */ | |
1718 | ||
1719 | static void | |
1720 | set_general_process (void) | |
1721 | { | |
1722 | struct remote_state *rs = get_remote_state (); | |
1723 | ||
1724 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1725 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1726 | return; |
1727 | ||
1728 | /* We only need to change the remote current thread if it's pointing | |
1729 | at some other process. */ | |
1730 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1731 | set_general_thread (inferior_ptid); | |
1732 | } | |
1733 | ||
c906108c | 1734 | \f |
79d7f229 PA |
1735 | /* Return nonzero if the thread PTID is still alive on the remote |
1736 | system. */ | |
c906108c SS |
1737 | |
1738 | static int | |
28439f5e | 1739 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1740 | { |
6d820c5c | 1741 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1742 | char *p, *endp; |
c906108c | 1743 | |
c0a2216e PA |
1744 | if (ptid_equal (ptid, magic_null_ptid)) |
1745 | /* The main thread is always alive. */ | |
1746 | return 1; | |
1747 | ||
1748 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1749 | /* The main thread is always alive. This can happen after a | |
1750 | vAttach, if the remote side doesn't support | |
1751 | multi-threading. */ | |
1752 | return 1; | |
1753 | ||
82f73884 PA |
1754 | p = rs->buf; |
1755 | endp = rs->buf + get_remote_packet_size (); | |
1756 | ||
1757 | *p++ = 'T'; | |
1758 | write_ptid (p, endp, ptid); | |
1759 | ||
2e9f7625 | 1760 | putpkt (rs->buf); |
6d820c5c | 1761 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1762 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1763 | } |
1764 | ||
1765 | /* About these extended threadlist and threadinfo packets. They are | |
1766 | variable length packets but, the fields within them are often fixed | |
1767 | length. They are redundent enough to send over UDP as is the | |
1768 | remote protocol in general. There is a matching unit test module | |
1769 | in libstub. */ | |
1770 | ||
cce74817 JM |
1771 | #define OPAQUETHREADBYTES 8 |
1772 | ||
1773 | /* a 64 bit opaque identifier */ | |
1774 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1775 | ||
23860348 | 1776 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1777 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1778 | changable. */ |
cce74817 JM |
1779 | |
1780 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1781 | Plan to fix this. */ |
cce74817 | 1782 | |
23860348 | 1783 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1784 | |
9d1f7ab2 | 1785 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1786 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1787 | |
1788 | struct gdb_ext_thread_info | |
c5aa993b | 1789 | { |
23860348 | 1790 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1791 | int active; /* Has state interesting to GDB? |
23860348 | 1792 | regs, stack. */ |
2bc416ba | 1793 | char display[256]; /* Brief state display, name, |
cedea757 | 1794 | blocked/suspended. */ |
23860348 | 1795 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1796 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1797 | whatever. */ |
c5aa993b | 1798 | }; |
cce74817 JM |
1799 | |
1800 | /* The volume of remote transfers can be limited by submitting | |
1801 | a mask containing bits specifying the desired information. | |
1802 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1803 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1804 | |
1805 | #define TAG_THREADID 1 | |
1806 | #define TAG_EXISTS 2 | |
1807 | #define TAG_DISPLAY 4 | |
1808 | #define TAG_THREADNAME 8 | |
c5aa993b | 1809 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1810 | |
23860348 | 1811 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1812 | |
b2dd6311 | 1813 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1814 | |
a14ed312 | 1815 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1816 | |
a14ed312 | 1817 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1818 | |
23860348 | 1819 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1820 | |
a14ed312 | 1821 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1822 | |
a14ed312 | 1823 | static char *pack_int (char *buf, int value); |
cce74817 | 1824 | |
a14ed312 | 1825 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1826 | |
a14ed312 | 1827 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1828 | |
23860348 | 1829 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1830 | |
23860348 | 1831 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1832 | |
23860348 | 1833 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1834 | |
23860348 | 1835 | static int threadref_to_int (threadref *ref); |
cce74817 | 1836 | |
23860348 | 1837 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1838 | |
23860348 | 1839 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1840 | |
2bc416ba | 1841 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1842 | threadref *id); |
cce74817 | 1843 | |
a14ed312 | 1844 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1845 | threadref *expectedref, |
a14ed312 KB |
1846 | struct gdb_ext_thread_info |
1847 | *info); | |
cce74817 JM |
1848 | |
1849 | ||
2bc416ba | 1850 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1851 | int fieldset, /*TAG mask */ |
a14ed312 | 1852 | struct gdb_ext_thread_info *info); |
cce74817 | 1853 | |
a14ed312 KB |
1854 | static char *pack_threadlist_request (char *pkt, int startflag, |
1855 | int threadcount, | |
23860348 | 1856 | threadref *nextthread); |
cce74817 | 1857 | |
a14ed312 KB |
1858 | static int parse_threadlist_response (char *pkt, |
1859 | int result_limit, | |
23860348 | 1860 | threadref *original_echo, |
2bc416ba | 1861 | threadref *resultlist, |
23860348 | 1862 | int *doneflag); |
cce74817 | 1863 | |
a14ed312 | 1864 | static int remote_get_threadlist (int startflag, |
23860348 | 1865 | threadref *nextthread, |
a14ed312 KB |
1866 | int result_limit, |
1867 | int *done, | |
2bc416ba | 1868 | int *result_count, |
23860348 | 1869 | threadref *threadlist); |
cce74817 | 1870 | |
23860348 | 1871 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1872 | |
a14ed312 KB |
1873 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1874 | void *context, int looplimit); | |
cce74817 | 1875 | |
23860348 | 1876 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1877 | |
82f73884 PA |
1878 | |
1879 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1880 | buffer we're allowed to write to. Returns | |
1881 | BUF+CHARACTERS_WRITTEN. */ | |
1882 | ||
1883 | static char * | |
1884 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1885 | { | |
1886 | int pid, tid; | |
1887 | struct remote_state *rs = get_remote_state (); | |
1888 | ||
1889 | if (remote_multi_process_p (rs)) | |
1890 | { | |
1891 | pid = ptid_get_pid (ptid); | |
1892 | if (pid < 0) | |
1893 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1894 | else | |
1895 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1896 | } | |
1897 | tid = ptid_get_tid (ptid); | |
1898 | if (tid < 0) | |
1899 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1900 | else | |
1901 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1902 | ||
1903 | return buf; | |
1904 | } | |
1905 | ||
1906 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1907 | passed the last parsed char. Returns null_ptid on error. */ | |
1908 | ||
1909 | static ptid_t | |
1910 | read_ptid (char *buf, char **obuf) | |
1911 | { | |
1912 | char *p = buf; | |
1913 | char *pp; | |
1914 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1915 | |
1916 | if (*p == 'p') | |
1917 | { | |
1918 | /* Multi-process ptid. */ | |
1919 | pp = unpack_varlen_hex (p + 1, &pid); | |
1920 | if (*pp != '.') | |
b37520b6 | 1921 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1922 | |
1923 | p = pp; | |
1924 | pp = unpack_varlen_hex (p + 1, &tid); | |
1925 | if (obuf) | |
1926 | *obuf = pp; | |
1927 | return ptid_build (pid, 0, tid); | |
1928 | } | |
1929 | ||
1930 | /* No multi-process. Just a tid. */ | |
1931 | pp = unpack_varlen_hex (p, &tid); | |
1932 | ||
1933 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1934 | what's in inferior_ptid, unless it's null at this point. If so, |
1935 | then since there's no way to know the pid of the reported | |
1936 | threads, use the magic number. */ | |
1937 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1938 | pid = ptid_get_pid (magic_null_ptid); | |
1939 | else | |
1940 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1941 | |
1942 | if (obuf) | |
1943 | *obuf = pp; | |
1944 | return ptid_build (pid, 0, tid); | |
1945 | } | |
1946 | ||
23860348 | 1947 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1948 | |
1949 | static const char hexchars[] = "0123456789abcdef"; | |
1950 | ||
1951 | static int | |
fba45db2 | 1952 | ishex (int ch, int *val) |
c906108c SS |
1953 | { |
1954 | if ((ch >= 'a') && (ch <= 'f')) | |
1955 | { | |
1956 | *val = ch - 'a' + 10; | |
1957 | return 1; | |
1958 | } | |
1959 | if ((ch >= 'A') && (ch <= 'F')) | |
1960 | { | |
1961 | *val = ch - 'A' + 10; | |
1962 | return 1; | |
1963 | } | |
1964 | if ((ch >= '0') && (ch <= '9')) | |
1965 | { | |
1966 | *val = ch - '0'; | |
1967 | return 1; | |
1968 | } | |
1969 | return 0; | |
1970 | } | |
1971 | ||
1972 | static int | |
fba45db2 | 1973 | stubhex (int ch) |
c906108c SS |
1974 | { |
1975 | if (ch >= 'a' && ch <= 'f') | |
1976 | return ch - 'a' + 10; | |
1977 | if (ch >= '0' && ch <= '9') | |
1978 | return ch - '0'; | |
1979 | if (ch >= 'A' && ch <= 'F') | |
1980 | return ch - 'A' + 10; | |
1981 | return -1; | |
1982 | } | |
1983 | ||
1984 | static int | |
fba45db2 | 1985 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1986 | { |
1987 | int nibble; | |
1988 | int retval = 0; | |
1989 | ||
1990 | while (fieldlength) | |
1991 | { | |
1992 | nibble = stubhex (*buff++); | |
1993 | retval |= nibble; | |
1994 | fieldlength--; | |
1995 | if (fieldlength) | |
1996 | retval = retval << 4; | |
1997 | } | |
1998 | return retval; | |
1999 | } | |
2000 | ||
2001 | char * | |
fba45db2 | 2002 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2003 | ULONGEST *result) |
c906108c SS |
2004 | { |
2005 | int nibble; | |
d49c44d5 | 2006 | ULONGEST retval = 0; |
c906108c SS |
2007 | |
2008 | while (ishex (*buff, &nibble)) | |
2009 | { | |
2010 | buff++; | |
2011 | retval = retval << 4; | |
2012 | retval |= nibble & 0x0f; | |
2013 | } | |
2014 | *result = retval; | |
2015 | return buff; | |
2016 | } | |
2017 | ||
2018 | static char * | |
fba45db2 | 2019 | unpack_nibble (char *buf, int *val) |
c906108c | 2020 | { |
b7589f7d | 2021 | *val = fromhex (*buf++); |
c906108c SS |
2022 | return buf; |
2023 | } | |
2024 | ||
2025 | static char * | |
fba45db2 | 2026 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2027 | { |
2028 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2029 | return buf; | |
2030 | } | |
2031 | ||
2032 | static char * | |
fba45db2 | 2033 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2034 | { |
2035 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2036 | *pkt++ = hexchars[(byte & 0xf)]; | |
2037 | return pkt; | |
2038 | } | |
2039 | ||
2040 | static char * | |
fba45db2 | 2041 | unpack_byte (char *buf, int *value) |
c906108c SS |
2042 | { |
2043 | *value = stub_unpack_int (buf, 2); | |
2044 | return buf + 2; | |
2045 | } | |
2046 | ||
2047 | static char * | |
fba45db2 | 2048 | pack_int (char *buf, int value) |
c906108c SS |
2049 | { |
2050 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2051 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2052 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2053 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2054 | return buf; | |
2055 | } | |
2056 | ||
2057 | static char * | |
fba45db2 | 2058 | unpack_int (char *buf, int *value) |
c906108c SS |
2059 | { |
2060 | *value = stub_unpack_int (buf, 8); | |
2061 | return buf + 8; | |
2062 | } | |
2063 | ||
23860348 | 2064 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2065 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2066 | |
2067 | static char * | |
fba45db2 | 2068 | pack_string (char *pkt, char *string) |
c906108c SS |
2069 | { |
2070 | char ch; | |
2071 | int len; | |
2072 | ||
2073 | len = strlen (string); | |
2074 | if (len > 200) | |
23860348 | 2075 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2076 | pkt = pack_hex_byte (pkt, len); |
2077 | while (len-- > 0) | |
2078 | { | |
2079 | ch = *string++; | |
2080 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2081 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2082 | *pkt++ = ch; |
2083 | } | |
2084 | return pkt; | |
2085 | } | |
2086 | #endif /* 0 (unused) */ | |
2087 | ||
2088 | static char * | |
fba45db2 | 2089 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2090 | { |
2091 | while (length--) | |
2092 | *dest++ = *src++; | |
2093 | *dest = '\0'; | |
2094 | return src; | |
2095 | } | |
2096 | ||
2097 | static char * | |
fba45db2 | 2098 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2099 | { |
2100 | char *limit; | |
2101 | unsigned char *altid; | |
2102 | ||
2103 | altid = (unsigned char *) id; | |
2104 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2105 | while (pkt < limit) | |
2106 | pkt = pack_hex_byte (pkt, *altid++); | |
2107 | return pkt; | |
2108 | } | |
2109 | ||
2110 | ||
2111 | static char * | |
fba45db2 | 2112 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2113 | { |
2114 | char *altref; | |
2115 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2116 | int x, y; | |
2117 | ||
2118 | altref = (char *) id; | |
2119 | ||
2120 | while (inbuf < limit) | |
2121 | { | |
2122 | x = stubhex (*inbuf++); | |
2123 | y = stubhex (*inbuf++); | |
2124 | *altref++ = (x << 4) | y; | |
2125 | } | |
2126 | return inbuf; | |
2127 | } | |
2128 | ||
2129 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2130 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2131 | to use 64bit thread references internally. This is an adapter |
2132 | function. */ | |
2133 | ||
2134 | void | |
fba45db2 | 2135 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2136 | { |
2137 | unsigned char *scan; | |
2138 | ||
2139 | scan = (unsigned char *) id; | |
2140 | { | |
2141 | int i = 4; | |
2142 | while (i--) | |
2143 | *scan++ = 0; | |
2144 | } | |
2145 | *scan++ = (value >> 24) & 0xff; | |
2146 | *scan++ = (value >> 16) & 0xff; | |
2147 | *scan++ = (value >> 8) & 0xff; | |
2148 | *scan++ = (value & 0xff); | |
2149 | } | |
2150 | ||
2151 | static int | |
fba45db2 | 2152 | threadref_to_int (threadref *ref) |
c906108c SS |
2153 | { |
2154 | int i, value = 0; | |
2155 | unsigned char *scan; | |
2156 | ||
cfd77fa1 | 2157 | scan = *ref; |
c906108c SS |
2158 | scan += 4; |
2159 | i = 4; | |
2160 | while (i-- > 0) | |
2161 | value = (value << 8) | ((*scan++) & 0xff); | |
2162 | return value; | |
2163 | } | |
2164 | ||
2165 | static void | |
fba45db2 | 2166 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2167 | { |
2168 | int i; | |
2169 | unsigned char *csrc, *cdest; | |
2170 | ||
2171 | csrc = (unsigned char *) src; | |
2172 | cdest = (unsigned char *) dest; | |
2173 | i = 8; | |
2174 | while (i--) | |
2175 | *cdest++ = *csrc++; | |
2176 | } | |
2177 | ||
2178 | static int | |
fba45db2 | 2179 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2180 | { |
23860348 | 2181 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2182 | #if 0 |
2183 | unsigned char *srcp, *destp; | |
2184 | int i, result; | |
2185 | srcp = (char *) src; | |
2186 | destp = (char *) dest; | |
2187 | ||
2188 | result = 1; | |
2189 | while (i-- > 0) | |
2190 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2191 | return result; | |
2192 | #endif | |
2193 | return 1; | |
2194 | } | |
2195 | ||
2196 | /* | |
c5aa993b JM |
2197 | threadid:1, # always request threadid |
2198 | context_exists:2, | |
2199 | display:4, | |
2200 | unique_name:8, | |
2201 | more_display:16 | |
2202 | */ | |
c906108c SS |
2203 | |
2204 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2205 | ||
2206 | static char * | |
fba45db2 | 2207 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2208 | { |
23860348 MS |
2209 | *pkt++ = 'q'; /* Info Query */ |
2210 | *pkt++ = 'P'; /* process or thread info */ | |
2211 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2212 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2213 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2214 | return pkt; |
2215 | } | |
2216 | ||
23860348 | 2217 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2218 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2219 | add more fields as time goes by. */ |
c906108c | 2220 | |
23860348 | 2221 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2222 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2223 | fetch registers and its stack? */ |
c5aa993b | 2224 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2225 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2226 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2227 | the process. */ |
c906108c SS |
2228 | |
2229 | static int | |
fba45db2 KB |
2230 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2231 | struct gdb_ext_thread_info *info) | |
c906108c | 2232 | { |
d01949b6 | 2233 | struct remote_state *rs = get_remote_state (); |
c906108c | 2234 | int mask, length; |
cfd77fa1 | 2235 | int tag; |
c906108c | 2236 | threadref ref; |
6d820c5c | 2237 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2238 | int retval = 1; |
2239 | ||
23860348 | 2240 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2241 | info->active = 0; |
2242 | info->display[0] = '\0'; | |
2243 | info->shortname[0] = '\0'; | |
2244 | info->more_display[0] = '\0'; | |
2245 | ||
23860348 MS |
2246 | /* Assume the characters indicating the packet type have been |
2247 | stripped. */ | |
c906108c SS |
2248 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2249 | pkt = unpack_threadid (pkt, &ref); | |
2250 | ||
2251 | if (mask == 0) | |
8a3fe4f8 | 2252 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2253 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2254 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2255 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2256 | return 0; |
2257 | } | |
2258 | copy_threadref (&info->threadid, &ref); | |
2259 | ||
23860348 | 2260 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2261 | |
23860348 MS |
2262 | /* Packets are terminated with nulls. */ |
2263 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2264 | { |
2265 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2266 | pkt = unpack_byte (pkt, &length); /* length */ |
2267 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2268 | { |
8a3fe4f8 | 2269 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2270 | retval = 0; |
2271 | break; | |
2272 | } | |
2273 | if (tag == TAG_THREADID) | |
2274 | { | |
2275 | if (length != 16) | |
2276 | { | |
8a3fe4f8 | 2277 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2278 | retval = 0; |
2279 | break; | |
2280 | } | |
2281 | pkt = unpack_threadid (pkt, &ref); | |
2282 | mask = mask & ~TAG_THREADID; | |
2283 | continue; | |
2284 | } | |
2285 | if (tag == TAG_EXISTS) | |
2286 | { | |
2287 | info->active = stub_unpack_int (pkt, length); | |
2288 | pkt += length; | |
2289 | mask = mask & ~(TAG_EXISTS); | |
2290 | if (length > 8) | |
2291 | { | |
8a3fe4f8 | 2292 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2293 | retval = 0; |
2294 | break; | |
2295 | } | |
2296 | continue; | |
2297 | } | |
2298 | if (tag == TAG_THREADNAME) | |
2299 | { | |
2300 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2301 | mask = mask & ~TAG_THREADNAME; | |
2302 | continue; | |
2303 | } | |
2304 | if (tag == TAG_DISPLAY) | |
2305 | { | |
2306 | pkt = unpack_string (pkt, &info->display[0], length); | |
2307 | mask = mask & ~TAG_DISPLAY; | |
2308 | continue; | |
2309 | } | |
2310 | if (tag == TAG_MOREDISPLAY) | |
2311 | { | |
2312 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2313 | mask = mask & ~TAG_MOREDISPLAY; | |
2314 | continue; | |
2315 | } | |
8a3fe4f8 | 2316 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2317 | break; /* Not a tag we know about. */ |
c906108c SS |
2318 | } |
2319 | return retval; | |
2320 | } | |
2321 | ||
2322 | static int | |
fba45db2 KB |
2323 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2324 | struct gdb_ext_thread_info *info) | |
c906108c | 2325 | { |
d01949b6 | 2326 | struct remote_state *rs = get_remote_state (); |
c906108c | 2327 | int result; |
c906108c | 2328 | |
2e9f7625 DJ |
2329 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2330 | putpkt (rs->buf); | |
6d820c5c | 2331 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2332 | |
2333 | if (rs->buf[0] == '\0') | |
2334 | return 0; | |
2335 | ||
2e9f7625 | 2336 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2337 | threadid, info); |
c906108c SS |
2338 | return result; |
2339 | } | |
2340 | ||
c906108c SS |
2341 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2342 | ||
2343 | static char * | |
fba45db2 KB |
2344 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2345 | threadref *nextthread) | |
c906108c SS |
2346 | { |
2347 | *pkt++ = 'q'; /* info query packet */ | |
2348 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2349 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2350 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2351 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2352 | *pkt = '\0'; | |
2353 | return pkt; | |
2354 | } | |
2355 | ||
2356 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2357 | ||
2358 | static int | |
fba45db2 KB |
2359 | parse_threadlist_response (char *pkt, int result_limit, |
2360 | threadref *original_echo, threadref *resultlist, | |
2361 | int *doneflag) | |
c906108c | 2362 | { |
d01949b6 | 2363 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2364 | char *limit; |
2365 | int count, resultcount, done; | |
2366 | ||
2367 | resultcount = 0; | |
2368 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2369 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2370 | /* done parse past here */ |
c906108c SS |
2371 | pkt = unpack_byte (pkt, &count); /* count field */ |
2372 | pkt = unpack_nibble (pkt, &done); | |
2373 | /* The first threadid is the argument threadid. */ | |
2374 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2375 | while ((count-- > 0) && (pkt < limit)) | |
2376 | { | |
2377 | pkt = unpack_threadid (pkt, resultlist++); | |
2378 | if (resultcount++ >= result_limit) | |
2379 | break; | |
2380 | } | |
2381 | if (doneflag) | |
2382 | *doneflag = done; | |
2383 | return resultcount; | |
2384 | } | |
2385 | ||
2386 | static int | |
fba45db2 KB |
2387 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2388 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2389 | { |
d01949b6 | 2390 | struct remote_state *rs = get_remote_state (); |
c906108c | 2391 | static threadref echo_nextthread; |
c906108c SS |
2392 | int result = 1; |
2393 | ||
23860348 | 2394 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2395 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2396 | >= get_remote_packet_size ()) | |
ea9c271d | 2397 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2398 | |
6d820c5c DJ |
2399 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2400 | putpkt (rs->buf); | |
2401 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2402 | |
d8f2712d | 2403 | if (*rs->buf == '\0') |
21bce120 | 2404 | return 0; |
d8f2712d VP |
2405 | else |
2406 | *result_count = | |
2407 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2408 | threadlist, done); | |
c906108c SS |
2409 | |
2410 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2411 | { | |
23860348 MS |
2412 | /* FIXME: This is a good reason to drop the packet. */ |
2413 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2414 | /* Possabilities : |
2415 | retransmit immediatly - race conditions | |
2416 | retransmit after timeout - yes | |
2417 | exit | |
2418 | wait for packet, then exit | |
2419 | */ | |
8a3fe4f8 | 2420 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2421 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2422 | } |
2423 | if (*result_count <= 0) | |
2424 | { | |
2425 | if (*done != 1) | |
2426 | { | |
8a3fe4f8 | 2427 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2428 | result = 0; |
2429 | } | |
2430 | return result; /* break; */ | |
2431 | } | |
2432 | if (*result_count > result_limit) | |
2433 | { | |
2434 | *result_count = 0; | |
8a3fe4f8 | 2435 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2436 | return 0; |
2437 | } | |
2438 | return result; | |
2439 | } | |
2440 | ||
23860348 MS |
2441 | /* This is the interface between remote and threads, remotes upper |
2442 | interface. */ | |
c906108c SS |
2443 | |
2444 | /* remote_find_new_threads retrieves the thread list and for each | |
2445 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2446 | adding the thread if it does not already exist. This involves |
c906108c SS |
2447 | getting partial thread lists from the remote target so, polling the |
2448 | quit_flag is required. */ | |
2449 | ||
2450 | ||
23860348 | 2451 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2452 | |
2453 | #define MAXTHREADLISTRESULTS 32 | |
2454 | ||
2455 | static int | |
fba45db2 KB |
2456 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2457 | int looplimit) | |
c906108c SS |
2458 | { |
2459 | int done, i, result_count; | |
2460 | int startflag = 1; | |
2461 | int result = 1; | |
2462 | int loopcount = 0; | |
2463 | static threadref nextthread; | |
2464 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2465 | ||
2466 | done = 0; | |
2467 | while (!done) | |
2468 | { | |
2469 | if (loopcount++ > looplimit) | |
2470 | { | |
2471 | result = 0; | |
8a3fe4f8 | 2472 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2473 | break; |
2474 | } | |
2475 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2476 | &done, &result_count, resultthreadlist)) | |
2477 | { | |
2478 | result = 0; | |
2479 | break; | |
2480 | } | |
23860348 | 2481 | /* Clear for later iterations. */ |
c906108c SS |
2482 | startflag = 0; |
2483 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2484 | if (result_count >= 1) | |
2485 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2486 | i = 0; | |
2487 | while (result_count--) | |
2488 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2489 | break; | |
2490 | } | |
2491 | return result; | |
2492 | } | |
2493 | ||
2494 | static int | |
fba45db2 | 2495 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2496 | { |
79d7f229 PA |
2497 | int pid = ptid_get_pid (inferior_ptid); |
2498 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2499 | |
2500 | if (!in_thread_list (ptid)) | |
2501 | add_thread (ptid); | |
c906108c SS |
2502 | return 1; /* continue iterator */ |
2503 | } | |
2504 | ||
2505 | #define CRAZY_MAX_THREADS 1000 | |
2506 | ||
39f77062 KB |
2507 | static ptid_t |
2508 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2509 | { |
d01949b6 | 2510 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2511 | |
2512 | putpkt ("qC"); | |
6d820c5c | 2513 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2514 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2515 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2516 | else |
2517 | return oldpid; | |
2518 | } | |
2519 | ||
802188a7 RM |
2520 | /* Find new threads for info threads command. |
2521 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2522 | */ |
cce74817 JM |
2523 | |
2524 | static void | |
fba45db2 | 2525 | remote_find_new_threads (void) |
c906108c | 2526 | { |
c5aa993b JM |
2527 | remote_threadlist_iterator (remote_newthread_step, 0, |
2528 | CRAZY_MAX_THREADS); | |
c906108c SS |
2529 | } |
2530 | ||
dc146f7c VP |
2531 | #if defined(HAVE_LIBEXPAT) |
2532 | ||
2533 | typedef struct thread_item | |
2534 | { | |
2535 | ptid_t ptid; | |
2536 | char *extra; | |
2537 | int core; | |
2538 | } thread_item_t; | |
2539 | DEF_VEC_O(thread_item_t); | |
2540 | ||
2541 | struct threads_parsing_context | |
2542 | { | |
2543 | VEC (thread_item_t) *items; | |
2544 | }; | |
2545 | ||
2546 | static void | |
2547 | start_thread (struct gdb_xml_parser *parser, | |
2548 | const struct gdb_xml_element *element, | |
2549 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2550 | { | |
2551 | struct threads_parsing_context *data = user_data; | |
2552 | ||
2553 | struct thread_item item; | |
2554 | char *id; | |
3d2c1d41 | 2555 | struct gdb_xml_value *attr; |
dc146f7c | 2556 | |
3d2c1d41 | 2557 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2558 | item.ptid = read_ptid (id, NULL); |
2559 | ||
3d2c1d41 PA |
2560 | attr = xml_find_attribute (attributes, "core"); |
2561 | if (attr != NULL) | |
2562 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2563 | else |
2564 | item.core = -1; | |
2565 | ||
2566 | item.extra = 0; | |
2567 | ||
2568 | VEC_safe_push (thread_item_t, data->items, &item); | |
2569 | } | |
2570 | ||
2571 | static void | |
2572 | end_thread (struct gdb_xml_parser *parser, | |
2573 | const struct gdb_xml_element *element, | |
2574 | void *user_data, const char *body_text) | |
2575 | { | |
2576 | struct threads_parsing_context *data = user_data; | |
2577 | ||
2578 | if (body_text && *body_text) | |
2ae2a0b7 | 2579 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2580 | } |
2581 | ||
2582 | const struct gdb_xml_attribute thread_attributes[] = { | |
2583 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2584 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2585 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2586 | }; | |
2587 | ||
2588 | const struct gdb_xml_element thread_children[] = { | |
2589 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2590 | }; | |
2591 | ||
2592 | const struct gdb_xml_element threads_children[] = { | |
2593 | { "thread", thread_attributes, thread_children, | |
2594 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2595 | start_thread, end_thread }, | |
2596 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2597 | }; | |
2598 | ||
2599 | const struct gdb_xml_element threads_elements[] = { | |
2600 | { "threads", NULL, threads_children, | |
2601 | GDB_XML_EF_NONE, NULL, NULL }, | |
2602 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2603 | }; | |
2604 | ||
02357a4a PA |
2605 | /* Discard the contents of the constructed thread info context. */ |
2606 | ||
2607 | static void | |
2608 | clear_threads_parsing_context (void *p) | |
2609 | { | |
2610 | struct threads_parsing_context *context = p; | |
2611 | int i; | |
2612 | struct thread_item *item; | |
2613 | ||
2614 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2615 | xfree (item->extra); | |
2616 | ||
2617 | VEC_free (thread_item_t, context->items); | |
2618 | } | |
2619 | ||
dc146f7c VP |
2620 | #endif |
2621 | ||
9d1f7ab2 MS |
2622 | /* |
2623 | * Find all threads for info threads command. | |
2624 | * Uses new thread protocol contributed by Cisco. | |
2625 | * Falls back and attempts to use the older method (above) | |
2626 | * if the target doesn't respond to the new method. | |
2627 | */ | |
2628 | ||
0f71a2f6 | 2629 | static void |
28439f5e | 2630 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2631 | { |
d01949b6 | 2632 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2633 | char *bufp; |
79d7f229 | 2634 | ptid_t new_thread; |
0f71a2f6 JM |
2635 | |
2636 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2637 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2638 | |
dc146f7c VP |
2639 | #if defined(HAVE_LIBEXPAT) |
2640 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2641 | { | |
2642 | char *xml = target_read_stralloc (¤t_target, | |
2643 | TARGET_OBJECT_THREADS, NULL); | |
2644 | ||
2645 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2646 | |
dc146f7c VP |
2647 | if (xml && *xml) |
2648 | { | |
dc146f7c | 2649 | struct threads_parsing_context context; |
dc146f7c | 2650 | |
efc0eabd PA |
2651 | context.items = NULL; |
2652 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2653 | |
efc0eabd PA |
2654 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2655 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2656 | { |
2657 | int i; | |
2658 | struct thread_item *item; | |
2659 | ||
3e43a32a MS |
2660 | for (i = 0; |
2661 | VEC_iterate (thread_item_t, context.items, i, item); | |
2662 | ++i) | |
dc146f7c VP |
2663 | { |
2664 | if (!ptid_equal (item->ptid, null_ptid)) | |
2665 | { | |
2666 | struct private_thread_info *info; | |
2667 | /* In non-stop mode, we assume new found threads | |
2668 | are running until proven otherwise with a | |
2669 | stop reply. In all-stop, we can only get | |
2670 | here if all threads are stopped. */ | |
2671 | int running = non_stop ? 1 : 0; | |
2672 | ||
2673 | remote_notice_new_inferior (item->ptid, running); | |
2674 | ||
2675 | info = demand_private_info (item->ptid); | |
2676 | info->core = item->core; | |
2677 | info->extra = item->extra; | |
02357a4a | 2678 | item->extra = NULL; |
dc146f7c | 2679 | } |
dc146f7c VP |
2680 | } |
2681 | } | |
dc146f7c VP |
2682 | } |
2683 | ||
2684 | do_cleanups (back_to); | |
2685 | return; | |
2686 | } | |
2687 | #endif | |
2688 | ||
9d1f7ab2 MS |
2689 | if (use_threadinfo_query) |
2690 | { | |
2691 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2692 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2693 | bufp = rs->buf; |
9d1f7ab2 | 2694 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2695 | { |
9d1f7ab2 MS |
2696 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2697 | { | |
2698 | do | |
2699 | { | |
82f73884 | 2700 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2701 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2702 | { |
74531fed | 2703 | /* In non-stop mode, we assume new found threads |
1941c569 | 2704 | are running until proven otherwise with a |
74531fed PA |
2705 | stop reply. In all-stop, we can only get |
2706 | here if all threads are stopped. */ | |
1941c569 PA |
2707 | int running = non_stop ? 1 : 0; |
2708 | ||
2709 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2710 | } |
9d1f7ab2 MS |
2711 | } |
2712 | while (*bufp++ == ','); /* comma-separated list */ | |
2713 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2714 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2715 | bufp = rs->buf; |
9d1f7ab2 MS |
2716 | } |
2717 | return; /* done */ | |
2718 | } | |
2719 | } | |
2720 | ||
74531fed PA |
2721 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2722 | if (non_stop) | |
2723 | return; | |
2724 | ||
23860348 | 2725 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2726 | use_threadinfo_query = 0; |
2727 | remote_find_new_threads (); | |
2728 | return; | |
2729 | } | |
2730 | ||
802188a7 | 2731 | /* |
9d1f7ab2 MS |
2732 | * Collect a descriptive string about the given thread. |
2733 | * The target may say anything it wants to about the thread | |
2734 | * (typically info about its blocked / runnable state, name, etc.). | |
2735 | * This string will appear in the info threads display. | |
802188a7 | 2736 | * |
9d1f7ab2 MS |
2737 | * Optional: targets are not required to implement this function. |
2738 | */ | |
2739 | ||
2740 | static char * | |
2741 | remote_threads_extra_info (struct thread_info *tp) | |
2742 | { | |
d01949b6 | 2743 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2744 | int result; |
2745 | int set; | |
2746 | threadref id; | |
2747 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2748 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2749 | int n = 0; /* position in display_buf */ |
2750 | ||
2751 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2752 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2753 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2754 | |
60e569b9 PA |
2755 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2756 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2757 | /* This is the main thread which was added by GDB. The remote | |
2758 | server doesn't know about it. */ | |
2759 | return NULL; | |
2760 | ||
dc146f7c VP |
2761 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2762 | { | |
2763 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2764 | |
dc146f7c VP |
2765 | if (info && info->private) |
2766 | return info->private->extra; | |
2767 | else | |
2768 | return NULL; | |
2769 | } | |
2770 | ||
9d1f7ab2 MS |
2771 | if (use_threadextra_query) |
2772 | { | |
82f73884 PA |
2773 | char *b = rs->buf; |
2774 | char *endb = rs->buf + get_remote_packet_size (); | |
2775 | ||
2776 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2777 | b += strlen (b); | |
2778 | write_ptid (b, endb, tp->ptid); | |
2779 | ||
2e9f7625 | 2780 | putpkt (rs->buf); |
6d820c5c | 2781 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2782 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2783 | { |
2e9f7625 DJ |
2784 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2785 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2786 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2787 | return display_buf; |
2788 | } | |
0f71a2f6 | 2789 | } |
9d1f7ab2 MS |
2790 | |
2791 | /* If the above query fails, fall back to the old method. */ | |
2792 | use_threadextra_query = 0; | |
2793 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2794 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2795 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2796 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2797 | if (threadinfo.active) | |
0f71a2f6 | 2798 | { |
9d1f7ab2 | 2799 | if (*threadinfo.shortname) |
2bc416ba | 2800 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2801 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2802 | if (*threadinfo.display) |
2bc416ba | 2803 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2804 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2805 | if (*threadinfo.more_display) |
2bc416ba | 2806 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2807 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2808 | |
2809 | if (n > 0) | |
c5aa993b | 2810 | { |
23860348 | 2811 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2812 | if (',' == display_buf[n-1]) |
2813 | display_buf[n-1] = ' '; | |
2814 | return display_buf; | |
c5aa993b | 2815 | } |
0f71a2f6 | 2816 | } |
9d1f7ab2 | 2817 | return NULL; |
0f71a2f6 | 2818 | } |
c906108c | 2819 | \f |
c5aa993b | 2820 | |
0fb4aa4b PA |
2821 | static int |
2822 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2823 | struct static_tracepoint_marker *marker) | |
2824 | { | |
2825 | struct remote_state *rs = get_remote_state (); | |
2826 | char *p = rs->buf; | |
2827 | ||
2828 | sprintf (p, "qTSTMat:"); | |
2829 | p += strlen (p); | |
2830 | p += hexnumstr (p, addr); | |
2831 | putpkt (rs->buf); | |
2832 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2833 | p = rs->buf; | |
2834 | ||
2835 | if (*p == 'E') | |
2836 | error (_("Remote failure reply: %s"), p); | |
2837 | ||
2838 | if (*p++ == 'm') | |
2839 | { | |
2840 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2841 | return 1; | |
2842 | } | |
2843 | ||
2844 | return 0; | |
2845 | } | |
2846 | ||
2847 | static void | |
2848 | free_current_marker (void *arg) | |
2849 | { | |
2850 | struct static_tracepoint_marker **marker_p = arg; | |
2851 | ||
2852 | if (*marker_p != NULL) | |
2853 | { | |
2854 | release_static_tracepoint_marker (*marker_p); | |
2855 | xfree (*marker_p); | |
2856 | } | |
2857 | else | |
2858 | *marker_p = NULL; | |
2859 | } | |
2860 | ||
2861 | static VEC(static_tracepoint_marker_p) * | |
2862 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2863 | { | |
2864 | struct remote_state *rs = get_remote_state (); | |
2865 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2866 | struct static_tracepoint_marker *marker = NULL; | |
2867 | struct cleanup *old_chain; | |
2868 | char *p; | |
2869 | ||
2870 | /* Ask for a first packet of static tracepoint marker | |
2871 | definition. */ | |
2872 | putpkt ("qTfSTM"); | |
2873 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2874 | p = rs->buf; | |
2875 | if (*p == 'E') | |
2876 | error (_("Remote failure reply: %s"), p); | |
2877 | ||
2878 | old_chain = make_cleanup (free_current_marker, &marker); | |
2879 | ||
2880 | while (*p++ == 'm') | |
2881 | { | |
2882 | if (marker == NULL) | |
2883 | marker = XCNEW (struct static_tracepoint_marker); | |
2884 | ||
2885 | do | |
2886 | { | |
2887 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2888 | ||
2889 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2890 | { | |
2891 | VEC_safe_push (static_tracepoint_marker_p, | |
2892 | markers, marker); | |
2893 | marker = NULL; | |
2894 | } | |
2895 | else | |
2896 | { | |
2897 | release_static_tracepoint_marker (marker); | |
2898 | memset (marker, 0, sizeof (*marker)); | |
2899 | } | |
2900 | } | |
2901 | while (*p++ == ','); /* comma-separated list */ | |
2902 | /* Ask for another packet of static tracepoint definition. */ | |
2903 | putpkt ("qTsSTM"); | |
2904 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2905 | p = rs->buf; | |
2906 | } | |
2907 | ||
2908 | do_cleanups (old_chain); | |
2909 | return markers; | |
2910 | } | |
2911 | ||
2912 | \f | |
10760264 JB |
2913 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2914 | ||
2915 | static ptid_t | |
2916 | remote_get_ada_task_ptid (long lwp, long thread) | |
2917 | { | |
2918 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2919 | } | |
2920 | \f | |
2921 | ||
24b06219 | 2922 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2923 | |
2924 | static void | |
fba45db2 | 2925 | extended_remote_restart (void) |
c906108c | 2926 | { |
d01949b6 | 2927 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2928 | |
2929 | /* Send the restart command; for reasons I don't understand the | |
2930 | remote side really expects a number after the "R". */ | |
ea9c271d | 2931 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2932 | putpkt (rs->buf); |
c906108c | 2933 | |
ad9a8f3f | 2934 | remote_fileio_reset (); |
c906108c SS |
2935 | } |
2936 | \f | |
2937 | /* Clean up connection to a remote debugger. */ | |
2938 | ||
c906108c | 2939 | static void |
fba45db2 | 2940 | remote_close (int quitting) |
c906108c | 2941 | { |
d3fd5342 PA |
2942 | if (remote_desc == NULL) |
2943 | return; /* already closed */ | |
2944 | ||
2945 | /* Make sure we leave stdin registered in the event loop, and we | |
2946 | don't leave the async SIGINT signal handler installed. */ | |
2947 | remote_terminal_ours (); | |
ce5ce7ed | 2948 | |
d3fd5342 PA |
2949 | serial_close (remote_desc); |
2950 | remote_desc = NULL; | |
ce5ce7ed PA |
2951 | |
2952 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2953 | of all the inferiors and their threads we were controlling. |
2954 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
2955 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 2956 | inferior_ptid = null_ptid; |
f67fd822 | 2957 | discard_all_inferiors (); |
ce5ce7ed | 2958 | |
74531fed PA |
2959 | /* We're no longer interested in any of these events. */ |
2960 | discard_pending_stop_replies (-1); | |
2961 | ||
2962 | if (remote_async_inferior_event_token) | |
2963 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2964 | if (remote_async_get_pending_events_token) | |
2965 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2966 | } |
2967 | ||
23860348 | 2968 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2969 | |
2970 | static void | |
fba45db2 | 2971 | get_offsets (void) |
c906108c | 2972 | { |
d01949b6 | 2973 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2974 | char *buf; |
085dd6e6 | 2975 | char *ptr; |
31d99776 DJ |
2976 | int lose, num_segments = 0, do_sections, do_segments; |
2977 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2978 | struct section_offsets *offs; |
31d99776 DJ |
2979 | struct symfile_segment_data *data; |
2980 | ||
2981 | if (symfile_objfile == NULL) | |
2982 | return; | |
c906108c SS |
2983 | |
2984 | putpkt ("qOffsets"); | |
6d820c5c | 2985 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2986 | buf = rs->buf; |
c906108c SS |
2987 | |
2988 | if (buf[0] == '\000') | |
2989 | return; /* Return silently. Stub doesn't support | |
23860348 | 2990 | this command. */ |
c906108c SS |
2991 | if (buf[0] == 'E') |
2992 | { | |
8a3fe4f8 | 2993 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2994 | return; |
2995 | } | |
2996 | ||
2997 | /* Pick up each field in turn. This used to be done with scanf, but | |
2998 | scanf will make trouble if CORE_ADDR size doesn't match | |
2999 | conversion directives correctly. The following code will work | |
3000 | with any size of CORE_ADDR. */ | |
3001 | text_addr = data_addr = bss_addr = 0; | |
3002 | ptr = buf; | |
3003 | lose = 0; | |
3004 | ||
3005 | if (strncmp (ptr, "Text=", 5) == 0) | |
3006 | { | |
3007 | ptr += 5; | |
3008 | /* Don't use strtol, could lose on big values. */ | |
3009 | while (*ptr && *ptr != ';') | |
3010 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3011 | |
31d99776 DJ |
3012 | if (strncmp (ptr, ";Data=", 6) == 0) |
3013 | { | |
3014 | ptr += 6; | |
3015 | while (*ptr && *ptr != ';') | |
3016 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3017 | } | |
3018 | else | |
3019 | lose = 1; | |
3020 | ||
3021 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3022 | { | |
3023 | ptr += 5; | |
3024 | while (*ptr && *ptr != ';') | |
3025 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3026 | |
31d99776 DJ |
3027 | if (bss_addr != data_addr) |
3028 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3029 | } | |
3030 | else | |
3031 | lose = 1; | |
3032 | } | |
3033 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3034 | { |
31d99776 DJ |
3035 | ptr += 8; |
3036 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3037 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3038 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3039 | num_segments = 1; | |
3040 | ||
3041 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3042 | { | |
3043 | ptr += 9; | |
3044 | while (*ptr && *ptr != ';') | |
3045 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3046 | num_segments++; | |
3047 | } | |
c906108c SS |
3048 | } |
3049 | else | |
3050 | lose = 1; | |
3051 | ||
3052 | if (lose) | |
8a3fe4f8 | 3053 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3054 | else if (*ptr != '\0') |
3055 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3056 | |
802188a7 | 3057 | offs = ((struct section_offsets *) |
a39a16c4 | 3058 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3059 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3060 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3061 | |
31d99776 DJ |
3062 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3063 | do_segments = (data != NULL); | |
3064 | do_sections = num_segments == 0; | |
c906108c | 3065 | |
28c32713 | 3066 | if (num_segments > 0) |
31d99776 | 3067 | { |
31d99776 DJ |
3068 | segments[0] = text_addr; |
3069 | segments[1] = data_addr; | |
3070 | } | |
28c32713 JB |
3071 | /* If we have two segments, we can still try to relocate everything |
3072 | by assuming that the .text and .data offsets apply to the whole | |
3073 | text and data segments. Convert the offsets given in the packet | |
3074 | to base addresses for symfile_map_offsets_to_segments. */ | |
3075 | else if (data && data->num_segments == 2) | |
3076 | { | |
3077 | segments[0] = data->segment_bases[0] + text_addr; | |
3078 | segments[1] = data->segment_bases[1] + data_addr; | |
3079 | num_segments = 2; | |
3080 | } | |
8d385431 DJ |
3081 | /* If the object file has only one segment, assume that it is text |
3082 | rather than data; main programs with no writable data are rare, | |
3083 | but programs with no code are useless. Of course the code might | |
3084 | have ended up in the data segment... to detect that we would need | |
3085 | the permissions here. */ | |
3086 | else if (data && data->num_segments == 1) | |
3087 | { | |
3088 | segments[0] = data->segment_bases[0] + text_addr; | |
3089 | num_segments = 1; | |
3090 | } | |
28c32713 JB |
3091 | /* There's no way to relocate by segment. */ |
3092 | else | |
3093 | do_segments = 0; | |
31d99776 DJ |
3094 | |
3095 | if (do_segments) | |
3096 | { | |
3097 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3098 | offs, num_segments, segments); | |
3099 | ||
3100 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3101 | error (_("Can not handle qOffsets TextSeg " |
3102 | "response with this symbol file")); | |
31d99776 DJ |
3103 | |
3104 | if (ret > 0) | |
3105 | do_sections = 0; | |
3106 | } | |
c906108c | 3107 | |
9ef895d6 DJ |
3108 | if (data) |
3109 | free_symfile_segment_data (data); | |
31d99776 DJ |
3110 | |
3111 | if (do_sections) | |
3112 | { | |
3113 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3114 | ||
3e43a32a MS |
3115 | /* This is a temporary kludge to force data and bss to use the |
3116 | same offsets because that's what nlmconv does now. The real | |
3117 | solution requires changes to the stub and remote.c that I | |
3118 | don't have time to do right now. */ | |
31d99776 DJ |
3119 | |
3120 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3121 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3122 | } | |
c906108c SS |
3123 | |
3124 | objfile_relocate (symfile_objfile, offs); | |
3125 | } | |
3126 | ||
74531fed PA |
3127 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3128 | threads we know are stopped already. This is used during the | |
3129 | initial remote connection in non-stop mode --- threads that are | |
3130 | reported as already being stopped are left stopped. */ | |
3131 | ||
3132 | static int | |
3133 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3134 | { | |
3135 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3136 | if (peek_stop_reply (thread->ptid)) | |
3137 | set_stop_requested (thread->ptid, 1); | |
3138 | ||
3139 | return 0; | |
3140 | } | |
3141 | ||
9a7071a8 JB |
3142 | /* Send interrupt_sequence to remote target. */ |
3143 | static void | |
eeae04df | 3144 | send_interrupt_sequence (void) |
9a7071a8 JB |
3145 | { |
3146 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3147 | serial_write (remote_desc, "\x03", 1); | |
3148 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3149 | serial_send_break (remote_desc); | |
3150 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3151 | { | |
3152 | serial_send_break (remote_desc); | |
3153 | serial_write (remote_desc, "g", 1); | |
3154 | } | |
3155 | else | |
3156 | internal_error (__FILE__, __LINE__, | |
3157 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3158 | interrupt_sequence_mode); | |
3159 | } | |
3160 | ||
49c62f2e PA |
3161 | /* Query the remote target for which is the current thread/process, |
3162 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3163 | responsible for setting the state such that the remote end is ready | |
3164 | to return the current thread. */ | |
3165 | ||
3166 | static void | |
3167 | add_current_inferior_and_thread (void) | |
3168 | { | |
3169 | struct remote_state *rs = get_remote_state (); | |
3170 | int fake_pid_p = 0; | |
3171 | ptid_t ptid; | |
3172 | ||
3173 | inferior_ptid = null_ptid; | |
3174 | ||
3175 | /* Now, if we have thread information, update inferior_ptid. */ | |
3176 | ptid = remote_current_thread (inferior_ptid); | |
3177 | if (!ptid_equal (ptid, null_ptid)) | |
3178 | { | |
3179 | if (!remote_multi_process_p (rs)) | |
3180 | fake_pid_p = 1; | |
3181 | ||
3182 | inferior_ptid = ptid; | |
3183 | } | |
3184 | else | |
3185 | { | |
3186 | /* Without this, some commands which require an active target | |
3187 | (such as kill) won't work. This variable serves (at least) | |
3188 | double duty as both the pid of the target process (if it has | |
3189 | such), and as a flag indicating that a target is active. */ | |
3190 | inferior_ptid = magic_null_ptid; | |
3191 | fake_pid_p = 1; | |
3192 | } | |
3193 | ||
3194 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3195 | ||
3196 | /* Add the main thread. */ | |
3197 | add_thread_silent (inferior_ptid); | |
3198 | } | |
3199 | ||
9cbc821d | 3200 | static void |
04bd08de | 3201 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3202 | { |
c8d104ad PA |
3203 | struct remote_state *rs = get_remote_state (); |
3204 | struct packet_config *noack_config; | |
2d717e4f | 3205 | char *wait_status = NULL; |
8621d6a9 | 3206 | |
23860348 | 3207 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3208 | |
9a7071a8 JB |
3209 | if (interrupt_on_connect) |
3210 | send_interrupt_sequence (); | |
3211 | ||
57e12211 TT |
3212 | /* Ack any packet which the remote side has already sent. */ |
3213 | serial_write (remote_desc, "+", 1); | |
3214 | ||
c8d104ad PA |
3215 | /* The first packet we send to the target is the optional "supported |
3216 | packets" request. If the target can answer this, it will tell us | |
3217 | which later probes to skip. */ | |
3218 | remote_query_supported (); | |
3219 | ||
d914c394 SS |
3220 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3221 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3222 | remote_set_permissions (); | |
3223 | ||
c8d104ad PA |
3224 | /* Next, we possibly activate noack mode. |
3225 | ||
3226 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3227 | enable noack mode if the stub reported a wish for it with | |
3228 | qSupported. | |
3229 | ||
3230 | If set to TRUE, then enable noack mode even if the stub didn't | |
3231 | report it in qSupported. If the stub doesn't reply OK, the | |
3232 | session ends with an error. | |
3233 | ||
3234 | If FALSE, then don't activate noack mode, regardless of what the | |
3235 | stub claimed should be the default with qSupported. */ | |
3236 | ||
3237 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3238 | ||
3239 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3240 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3241 | && noack_config->support == PACKET_ENABLE)) | |
3242 | { | |
3243 | putpkt ("QStartNoAckMode"); | |
3244 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3245 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3246 | rs->noack_mode = 1; | |
3247 | } | |
3248 | ||
04bd08de | 3249 | if (extended_p) |
5fe04517 PA |
3250 | { |
3251 | /* Tell the remote that we are using the extended protocol. */ | |
3252 | putpkt ("!"); | |
3253 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3254 | } | |
3255 | ||
d962ef82 DJ |
3256 | /* Next, if the target can specify a description, read it. We do |
3257 | this before anything involving memory or registers. */ | |
3258 | target_find_description (); | |
3259 | ||
6c95b8df PA |
3260 | /* Next, now that we know something about the target, update the |
3261 | address spaces in the program spaces. */ | |
3262 | update_address_spaces (); | |
3263 | ||
50c71eaf PA |
3264 | /* On OSs where the list of libraries is global to all |
3265 | processes, we fetch them early. */ | |
3266 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3267 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3268 | |
74531fed PA |
3269 | if (non_stop) |
3270 | { | |
3271 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3272 | error (_("Non-stop mode requested, but remote " |
3273 | "does not support non-stop")); | |
74531fed PA |
3274 | |
3275 | putpkt ("QNonStop:1"); | |
3276 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3277 | ||
3278 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3279 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3280 | |
3281 | /* Find about threads and processes the stub is already | |
3282 | controlling. We default to adding them in the running state. | |
3283 | The '?' query below will then tell us about which threads are | |
3284 | stopped. */ | |
04bd08de | 3285 | remote_threads_info (target); |
74531fed PA |
3286 | } |
3287 | else if (rs->non_stop_aware) | |
3288 | { | |
3289 | /* Don't assume that the stub can operate in all-stop mode. | |
3290 | Request it explicitely. */ | |
3291 | putpkt ("QNonStop:0"); | |
3292 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3293 | ||
3294 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3295 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3296 | } |
3297 | ||
2d717e4f DJ |
3298 | /* Check whether the target is running now. */ |
3299 | putpkt ("?"); | |
3300 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3301 | ||
74531fed | 3302 | if (!non_stop) |
2d717e4f | 3303 | { |
e714e1bf UW |
3304 | ptid_t ptid; |
3305 | int fake_pid_p = 0; | |
3306 | struct inferior *inf; | |
3307 | ||
74531fed | 3308 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3309 | { |
04bd08de | 3310 | if (!extended_p) |
74531fed | 3311 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3312 | |
3313 | /* We're connected, but not running. Drop out before we | |
3314 | call start_remote. */ | |
3315 | return; | |
2d717e4f DJ |
3316 | } |
3317 | else | |
74531fed | 3318 | { |
74531fed PA |
3319 | /* Save the reply for later. */ |
3320 | wait_status = alloca (strlen (rs->buf) + 1); | |
3321 | strcpy (wait_status, rs->buf); | |
3322 | } | |
3323 | ||
3324 | /* Let the stub know that we want it to return the thread. */ | |
3325 | set_continue_thread (minus_one_ptid); | |
3326 | ||
49c62f2e | 3327 | add_current_inferior_and_thread (); |
74531fed | 3328 | |
6e586cc5 YQ |
3329 | /* init_wait_for_inferior should be called before get_offsets in order |
3330 | to manage `inserted' flag in bp loc in a correct state. | |
3331 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3332 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3333 | start_remote, set `inserted' flag to 1. In the initialization of | |
3334 | inferior, breakpoint_init_inferior should be called first, and then | |
3335 | breakpoint_re_set can be called. If this order is broken, state of | |
3336 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3337 | manipulation. */ | |
3338 | init_wait_for_inferior (); | |
3339 | ||
74531fed PA |
3340 | get_offsets (); /* Get text, data & bss offsets. */ |
3341 | ||
d962ef82 DJ |
3342 | /* If we could not find a description using qXfer, and we know |
3343 | how to do it some other way, try again. This is not | |
3344 | supported for non-stop; it could be, but it is tricky if | |
3345 | there are no stopped threads when we connect. */ | |
04bd08de | 3346 | if (remote_read_description_p (target) |
d962ef82 DJ |
3347 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3348 | { | |
3349 | target_clear_description (); | |
3350 | target_find_description (); | |
3351 | } | |
3352 | ||
74531fed PA |
3353 | /* Use the previously fetched status. */ |
3354 | gdb_assert (wait_status != NULL); | |
3355 | strcpy (rs->buf, wait_status); | |
3356 | rs->cached_wait_status = 1; | |
3357 | ||
3358 | immediate_quit--; | |
04bd08de | 3359 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3360 | } |
3361 | else | |
3362 | { | |
68c97600 PA |
3363 | /* Clear WFI global state. Do this before finding about new |
3364 | threads and inferiors, and setting the current inferior. | |
3365 | Otherwise we would clear the proceed status of the current | |
3366 | inferior when we want its stop_soon state to be preserved | |
3367 | (see notice_new_inferior). */ | |
3368 | init_wait_for_inferior (); | |
3369 | ||
74531fed PA |
3370 | /* In non-stop, we will either get an "OK", meaning that there |
3371 | are no stopped threads at this time; or, a regular stop | |
3372 | reply. In the latter case, there may be more than one thread | |
3373 | stopped --- we pull them all out using the vStopped | |
3374 | mechanism. */ | |
3375 | if (strcmp (rs->buf, "OK") != 0) | |
3376 | { | |
3377 | struct stop_reply *stop_reply; | |
3378 | struct cleanup *old_chain; | |
2d717e4f | 3379 | |
74531fed PA |
3380 | stop_reply = stop_reply_xmalloc (); |
3381 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3382 | |
74531fed PA |
3383 | remote_parse_stop_reply (rs->buf, stop_reply); |
3384 | discard_cleanups (old_chain); | |
c0a2216e | 3385 | |
74531fed PA |
3386 | /* get_pending_stop_replies acks this one, and gets the rest |
3387 | out. */ | |
3388 | pending_stop_reply = stop_reply; | |
3389 | remote_get_pending_stop_replies (); | |
c906108c | 3390 | |
74531fed PA |
3391 | /* Make sure that threads that were stopped remain |
3392 | stopped. */ | |
3393 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3394 | } | |
2d717e4f | 3395 | |
74531fed PA |
3396 | if (target_can_async_p ()) |
3397 | target_async (inferior_event_handler, 0); | |
c906108c | 3398 | |
74531fed PA |
3399 | if (thread_count () == 0) |
3400 | { | |
04bd08de | 3401 | if (!extended_p) |
74531fed | 3402 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3403 | |
c35b1492 PA |
3404 | /* We're connected, but not running. Drop out before we |
3405 | call start_remote. */ | |
3406 | return; | |
3407 | } | |
74531fed PA |
3408 | |
3409 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3410 | |
74531fed PA |
3411 | /* Force the stub to choose a thread. */ |
3412 | set_general_thread (null_ptid); | |
c906108c | 3413 | |
74531fed PA |
3414 | /* Query it. */ |
3415 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3416 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3417 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3418 | |
74531fed PA |
3419 | get_offsets (); /* Get text, data & bss offsets. */ |
3420 | ||
3421 | /* In non-stop mode, any cached wait status will be stored in | |
3422 | the stop reply queue. */ | |
3423 | gdb_assert (wait_status == NULL); | |
f0223081 | 3424 | |
2455069d UW |
3425 | /* Report all signals during attach/startup. */ |
3426 | remote_pass_signals (0, NULL); | |
74531fed | 3427 | } |
c8d104ad | 3428 | |
c8d104ad PA |
3429 | /* If we connected to a live target, do some additional setup. */ |
3430 | if (target_has_execution) | |
3431 | { | |
3432 | if (exec_bfd) /* No use without an exec file. */ | |
3433 | remote_check_symbols (symfile_objfile); | |
3434 | } | |
50c71eaf | 3435 | |
d5551862 SS |
3436 | /* Possibly the target has been engaged in a trace run started |
3437 | previously; find out where things are at. */ | |
26afc0d7 | 3438 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3439 | { |
00bf0b85 SS |
3440 | struct uploaded_tp *uploaded_tps = NULL; |
3441 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3442 | ||
00bf0b85 SS |
3443 | if (current_trace_status ()->running) |
3444 | printf_filtered (_("Trace is already running on the target.\n")); | |
3445 | ||
3446 | /* Get trace state variables first, they may be checked when | |
3447 | parsing uploaded commands. */ | |
3448 | ||
3449 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3450 | ||
3451 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3452 | ||
3453 | remote_upload_tracepoints (&uploaded_tps); | |
3454 | ||
3455 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3456 | } |
3457 | ||
2567c7d9 PA |
3458 | /* If breakpoints are global, insert them now. */ |
3459 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3460 | && breakpoints_always_inserted_mode ()) |
3461 | insert_breakpoints (); | |
c906108c SS |
3462 | } |
3463 | ||
3464 | /* Open a connection to a remote debugger. | |
3465 | NAME is the filename used for communication. */ | |
3466 | ||
3467 | static void | |
fba45db2 | 3468 | remote_open (char *name, int from_tty) |
c906108c | 3469 | { |
75c99385 | 3470 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3471 | } |
3472 | ||
c906108c SS |
3473 | /* Open a connection to a remote debugger using the extended |
3474 | remote gdb protocol. NAME is the filename used for communication. */ | |
3475 | ||
3476 | static void | |
fba45db2 | 3477 | extended_remote_open (char *name, int from_tty) |
c906108c | 3478 | { |
75c99385 | 3479 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3480 | } |
3481 | ||
c906108c SS |
3482 | /* Generic code for opening a connection to a remote target. */ |
3483 | ||
d471ea57 AC |
3484 | static void |
3485 | init_all_packet_configs (void) | |
3486 | { | |
3487 | int i; | |
a744cf53 | 3488 | |
444abaca DJ |
3489 | for (i = 0; i < PACKET_MAX; i++) |
3490 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3491 | } |
3492 | ||
23860348 | 3493 | /* Symbol look-up. */ |
dc8acb97 MS |
3494 | |
3495 | static void | |
3496 | remote_check_symbols (struct objfile *objfile) | |
3497 | { | |
d01949b6 | 3498 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3499 | char *msg, *reply, *tmp; |
3500 | struct minimal_symbol *sym; | |
3501 | int end; | |
3502 | ||
63154eca PA |
3503 | /* The remote side has no concept of inferiors that aren't running |
3504 | yet, it only knows about running processes. If we're connected | |
3505 | but our current inferior is not running, we should not invite the | |
3506 | remote target to request symbol lookups related to its | |
3507 | (unrelated) current process. */ | |
3508 | if (!target_has_execution) | |
3509 | return; | |
3510 | ||
444abaca | 3511 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3512 | return; |
3513 | ||
63154eca PA |
3514 | /* Make sure the remote is pointing at the right process. Note |
3515 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3516 | set_general_process (); |
3517 | ||
6d820c5c DJ |
3518 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3519 | because we need both at the same time. */ | |
ea9c271d | 3520 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3521 | |
23860348 | 3522 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3523 | |
3524 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3525 | getpkt (&rs->buf, &rs->buf_size, 0); |
3526 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3527 | reply = rs->buf; |
dc8acb97 MS |
3528 | |
3529 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3530 | { | |
3531 | tmp = &reply[8]; | |
cfd77fa1 | 3532 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3533 | msg[end] = '\0'; |
3534 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3535 | if (sym == NULL) | |
ea9c271d | 3536 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3537 | else |
2bbe3cc1 | 3538 | { |
5af949e3 | 3539 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3540 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3541 | ||
3542 | /* If this is a function address, return the start of code | |
3543 | instead of any data function descriptor. */ | |
1cf3db46 | 3544 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3545 | sym_addr, |
3546 | ¤t_target); | |
3547 | ||
3548 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3549 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3550 | } |
3551 | ||
dc8acb97 | 3552 | putpkt (msg); |
6d820c5c | 3553 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3554 | reply = rs->buf; |
dc8acb97 MS |
3555 | } |
3556 | } | |
3557 | ||
9db8d71f DJ |
3558 | static struct serial * |
3559 | remote_serial_open (char *name) | |
3560 | { | |
3561 | static int udp_warning = 0; | |
3562 | ||
3563 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3564 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3565 | serial connection is reliable and not the serial connection promising | |
3566 | to be. */ | |
3567 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3568 | { | |
3e43a32a MS |
3569 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3570 | "Some events may be lost, rendering further debugging " | |
3571 | "impossible.")); | |
9db8d71f DJ |
3572 | udp_warning = 1; |
3573 | } | |
3574 | ||
3575 | return serial_open (name); | |
3576 | } | |
3577 | ||
d914c394 SS |
3578 | /* Inform the target of our permission settings. The permission flags |
3579 | work without this, but if the target knows the settings, it can do | |
3580 | a couple things. First, it can add its own check, to catch cases | |
3581 | that somehow manage to get by the permissions checks in target | |
3582 | methods. Second, if the target is wired to disallow particular | |
3583 | settings (for instance, a system in the field that is not set up to | |
3584 | be able to stop at a breakpoint), it can object to any unavailable | |
3585 | permissions. */ | |
3586 | ||
3587 | void | |
3588 | remote_set_permissions (void) | |
3589 | { | |
3590 | struct remote_state *rs = get_remote_state (); | |
3591 | ||
3592 | sprintf (rs->buf, "QAllow:" | |
3593 | "WriteReg:%x;WriteMem:%x;" | |
3594 | "InsertBreak:%x;InsertTrace:%x;" | |
3595 | "InsertFastTrace:%x;Stop:%x", | |
3596 | may_write_registers, may_write_memory, | |
3597 | may_insert_breakpoints, may_insert_tracepoints, | |
3598 | may_insert_fast_tracepoints, may_stop); | |
3599 | putpkt (rs->buf); | |
3600 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3601 | ||
3602 | /* If the target didn't like the packet, warn the user. Do not try | |
3603 | to undo the user's settings, that would just be maddening. */ | |
3604 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3605 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3606 | } |
3607 | ||
be2a5f71 DJ |
3608 | /* This type describes each known response to the qSupported |
3609 | packet. */ | |
3610 | struct protocol_feature | |
3611 | { | |
3612 | /* The name of this protocol feature. */ | |
3613 | const char *name; | |
3614 | ||
3615 | /* The default for this protocol feature. */ | |
3616 | enum packet_support default_support; | |
3617 | ||
3618 | /* The function to call when this feature is reported, or after | |
3619 | qSupported processing if the feature is not supported. | |
3620 | The first argument points to this structure. The second | |
3621 | argument indicates whether the packet requested support be | |
3622 | enabled, disabled, or probed (or the default, if this function | |
3623 | is being called at the end of processing and this feature was | |
3624 | not reported). The third argument may be NULL; if not NULL, it | |
3625 | is a NUL-terminated string taken from the packet following | |
3626 | this feature's name and an equals sign. */ | |
3627 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3628 | const char *); | |
3629 | ||
3630 | /* The corresponding packet for this feature. Only used if | |
3631 | FUNC is remote_supported_packet. */ | |
3632 | int packet; | |
3633 | }; | |
3634 | ||
be2a5f71 DJ |
3635 | static void |
3636 | remote_supported_packet (const struct protocol_feature *feature, | |
3637 | enum packet_support support, | |
3638 | const char *argument) | |
3639 | { | |
3640 | if (argument) | |
3641 | { | |
3642 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3643 | " \"%s\"."), feature->name); | |
3644 | return; | |
3645 | } | |
3646 | ||
3647 | if (remote_protocol_packets[feature->packet].support | |
3648 | == PACKET_SUPPORT_UNKNOWN) | |
3649 | remote_protocol_packets[feature->packet].support = support; | |
3650 | } | |
be2a5f71 DJ |
3651 | |
3652 | static void | |
3653 | remote_packet_size (const struct protocol_feature *feature, | |
3654 | enum packet_support support, const char *value) | |
3655 | { | |
3656 | struct remote_state *rs = get_remote_state (); | |
3657 | ||
3658 | int packet_size; | |
3659 | char *value_end; | |
3660 | ||
3661 | if (support != PACKET_ENABLE) | |
3662 | return; | |
3663 | ||
3664 | if (value == NULL || *value == '\0') | |
3665 | { | |
3666 | warning (_("Remote target reported \"%s\" without a size."), | |
3667 | feature->name); | |
3668 | return; | |
3669 | } | |
3670 | ||
3671 | errno = 0; | |
3672 | packet_size = strtol (value, &value_end, 16); | |
3673 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3674 | { | |
3675 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3676 | feature->name, value); | |
3677 | return; | |
3678 | } | |
3679 | ||
3680 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3681 | { | |
3682 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3683 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3684 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3685 | } | |
3686 | ||
3687 | /* Record the new maximum packet size. */ | |
3688 | rs->explicit_packet_size = packet_size; | |
3689 | } | |
3690 | ||
82f73884 PA |
3691 | static void |
3692 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3693 | enum packet_support support, const char *value) | |
3694 | { | |
3695 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3696 | |
82f73884 PA |
3697 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3698 | } | |
3699 | ||
74531fed PA |
3700 | static void |
3701 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3702 | enum packet_support support, const char *value) | |
3703 | { | |
3704 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3705 | |
74531fed PA |
3706 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3707 | } | |
3708 | ||
782b2b07 SS |
3709 | static void |
3710 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3711 | enum packet_support support, | |
3712 | const char *value) | |
3713 | { | |
3714 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3715 | |
782b2b07 SS |
3716 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3717 | } | |
3718 | ||
7a697b8d SS |
3719 | static void |
3720 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3721 | enum packet_support support, | |
3722 | const char *value) | |
3723 | { | |
3724 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3725 | |
7a697b8d SS |
3726 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3727 | } | |
3728 | ||
0fb4aa4b PA |
3729 | static void |
3730 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3731 | enum packet_support support, | |
3732 | const char *value) | |
3733 | { | |
3734 | struct remote_state *rs = get_remote_state (); | |
3735 | ||
3736 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3737 | } | |
3738 | ||
1e4d1764 YQ |
3739 | static void |
3740 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3741 | enum packet_support support, | |
3742 | const char *value) | |
3743 | { | |
3744 | struct remote_state *rs = get_remote_state (); | |
3745 | ||
3746 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3747 | } | |
3748 | ||
d5551862 SS |
3749 | static void |
3750 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3751 | enum packet_support support, | |
3752 | const char *value) | |
3753 | { | |
3754 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3755 | |
d5551862 SS |
3756 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3757 | } | |
3758 | ||
d248b706 KY |
3759 | static void |
3760 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3761 | enum packet_support support, | |
3762 | const char *value) | |
3763 | { | |
3764 | struct remote_state *rs = get_remote_state (); | |
3765 | ||
3766 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3767 | } | |
3768 | ||
3065dfb6 SS |
3769 | static void |
3770 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3771 | enum packet_support support, | |
3772 | const char *value) | |
3773 | { | |
3774 | struct remote_state *rs = get_remote_state (); | |
3775 | ||
3776 | rs->string_tracing = (support == PACKET_ENABLE); | |
3777 | } | |
3778 | ||
be2a5f71 | 3779 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3780 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3781 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3782 | PACKET_qXfer_auxv }, |
23181151 DJ |
3783 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3784 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3785 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3786 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3787 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3788 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3789 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3790 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3791 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3792 | PACKET_qXfer_spu_read }, | |
3793 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3794 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3795 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3796 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3797 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3798 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3799 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3800 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3801 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3802 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3803 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3804 | PACKET_QStartNoAckMode }, | |
82f73884 | 3805 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3806 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3807 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3808 | PACKET_qXfer_siginfo_read }, | |
3809 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3810 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3811 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3812 | PACKET_ConditionalTracepoints }, | |
7a697b8d SS |
3813 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3814 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3815 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3816 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3817 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3818 | PACKET_InstallInTrace}, | |
d5551862 SS |
3819 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3820 | -1 }, | |
40ab02ce MS |
3821 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3822 | PACKET_bc }, | |
3823 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3824 | PACKET_bs }, | |
409873ef SS |
3825 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3826 | PACKET_TracepointSource }, | |
d914c394 SS |
3827 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3828 | PACKET_QAllow }, | |
d248b706 KY |
3829 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3830 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3831 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3832 | PACKET_qXfer_fdpic }, | |
03583c20 UW |
3833 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3834 | PACKET_QDisableRandomization }, | |
3065dfb6 SS |
3835 | { "tracenz", PACKET_DISABLE, |
3836 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3837 | }; |
3838 | ||
c8d5aac9 L |
3839 | static char *remote_support_xml; |
3840 | ||
3841 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3842 | ||
3843 | void | |
6e39997a | 3844 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3845 | { |
3846 | #if defined(HAVE_LIBEXPAT) | |
3847 | if (remote_support_xml == NULL) | |
c4f7c687 | 3848 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3849 | else |
3850 | { | |
3851 | char *copy = xstrdup (remote_support_xml + 13); | |
3852 | char *p = strtok (copy, ","); | |
3853 | ||
3854 | do | |
3855 | { | |
3856 | if (strcmp (p, xml) == 0) | |
3857 | { | |
3858 | /* already there */ | |
3859 | xfree (copy); | |
3860 | return; | |
3861 | } | |
3862 | } | |
3863 | while ((p = strtok (NULL, ",")) != NULL); | |
3864 | xfree (copy); | |
3865 | ||
94b0dee1 PA |
3866 | remote_support_xml = reconcat (remote_support_xml, |
3867 | remote_support_xml, ",", xml, | |
3868 | (char *) NULL); | |
c8d5aac9 L |
3869 | } |
3870 | #endif | |
3871 | } | |
3872 | ||
3873 | static char * | |
3874 | remote_query_supported_append (char *msg, const char *append) | |
3875 | { | |
3876 | if (msg) | |
94b0dee1 | 3877 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3878 | else |
3879 | return xstrdup (append); | |
3880 | } | |
3881 | ||
be2a5f71 DJ |
3882 | static void |
3883 | remote_query_supported (void) | |
3884 | { | |
3885 | struct remote_state *rs = get_remote_state (); | |
3886 | char *next; | |
3887 | int i; | |
3888 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3889 | ||
3890 | /* The packet support flags are handled differently for this packet | |
3891 | than for most others. We treat an error, a disabled packet, and | |
3892 | an empty response identically: any features which must be reported | |
3893 | to be used will be automatically disabled. An empty buffer | |
3894 | accomplishes this, since that is also the representation for a list | |
3895 | containing no features. */ | |
3896 | ||
3897 | rs->buf[0] = 0; | |
3898 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3899 | { | |
c8d5aac9 | 3900 | char *q = NULL; |
94b0dee1 | 3901 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 3902 | |
901f9912 | 3903 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
3904 | |
3905 | if (remote_support_xml) | |
3906 | q = remote_query_supported_append (q, remote_support_xml); | |
3907 | ||
dde08ee1 PA |
3908 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3909 | ||
3910 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3911 | putpkt (q); | |
82f73884 | 3912 | |
94b0dee1 PA |
3913 | do_cleanups (old_chain); |
3914 | ||
be2a5f71 DJ |
3915 | getpkt (&rs->buf, &rs->buf_size, 0); |
3916 | ||
3917 | /* If an error occured, warn, but do not return - just reset the | |
3918 | buffer to empty and go on to disable features. */ | |
3919 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3920 | == PACKET_ERROR) | |
3921 | { | |
3922 | warning (_("Remote failure reply: %s"), rs->buf); | |
3923 | rs->buf[0] = 0; | |
3924 | } | |
3925 | } | |
3926 | ||
3927 | memset (seen, 0, sizeof (seen)); | |
3928 | ||
3929 | next = rs->buf; | |
3930 | while (*next) | |
3931 | { | |
3932 | enum packet_support is_supported; | |
3933 | char *p, *end, *name_end, *value; | |
3934 | ||
3935 | /* First separate out this item from the rest of the packet. If | |
3936 | there's another item after this, we overwrite the separator | |
3937 | (terminated strings are much easier to work with). */ | |
3938 | p = next; | |
3939 | end = strchr (p, ';'); | |
3940 | if (end == NULL) | |
3941 | { | |
3942 | end = p + strlen (p); | |
3943 | next = end; | |
3944 | } | |
3945 | else | |
3946 | { | |
89be2091 DJ |
3947 | *end = '\0'; |
3948 | next = end + 1; | |
3949 | ||
be2a5f71 DJ |
3950 | if (end == p) |
3951 | { | |
3952 | warning (_("empty item in \"qSupported\" response")); | |
3953 | continue; | |
3954 | } | |
be2a5f71 DJ |
3955 | } |
3956 | ||
3957 | name_end = strchr (p, '='); | |
3958 | if (name_end) | |
3959 | { | |
3960 | /* This is a name=value entry. */ | |
3961 | is_supported = PACKET_ENABLE; | |
3962 | value = name_end + 1; | |
3963 | *name_end = '\0'; | |
3964 | } | |
3965 | else | |
3966 | { | |
3967 | value = NULL; | |
3968 | switch (end[-1]) | |
3969 | { | |
3970 | case '+': | |
3971 | is_supported = PACKET_ENABLE; | |
3972 | break; | |
3973 | ||
3974 | case '-': | |
3975 | is_supported = PACKET_DISABLE; | |
3976 | break; | |
3977 | ||
3978 | case '?': | |
3979 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3980 | break; | |
3981 | ||
3982 | default: | |
3e43a32a MS |
3983 | warning (_("unrecognized item \"%s\" " |
3984 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
3985 | continue; |
3986 | } | |
3987 | end[-1] = '\0'; | |
3988 | } | |
3989 | ||
3990 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3991 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
3992 | { | |
3993 | const struct protocol_feature *feature; | |
3994 | ||
3995 | seen[i] = 1; | |
3996 | feature = &remote_protocol_features[i]; | |
3997 | feature->func (feature, is_supported, value); | |
3998 | break; | |
3999 | } | |
4000 | } | |
4001 | ||
4002 | /* If we increased the packet size, make sure to increase the global | |
4003 | buffer size also. We delay this until after parsing the entire | |
4004 | qSupported packet, because this is the same buffer we were | |
4005 | parsing. */ | |
4006 | if (rs->buf_size < rs->explicit_packet_size) | |
4007 | { | |
4008 | rs->buf_size = rs->explicit_packet_size; | |
4009 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4010 | } | |
4011 | ||
4012 | /* Handle the defaults for unmentioned features. */ | |
4013 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4014 | if (!seen[i]) | |
4015 | { | |
4016 | const struct protocol_feature *feature; | |
4017 | ||
4018 | feature = &remote_protocol_features[i]; | |
4019 | feature->func (feature, feature->default_support, NULL); | |
4020 | } | |
4021 | } | |
4022 | ||
4023 | ||
c906108c | 4024 | static void |
3e43a32a MS |
4025 | remote_open_1 (char *name, int from_tty, |
4026 | struct target_ops *target, int extended_p) | |
c906108c | 4027 | { |
d01949b6 | 4028 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4029 | |
c906108c | 4030 | if (name == 0) |
8a3fe4f8 | 4031 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4032 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4033 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4034 | |
23860348 | 4035 | /* See FIXME above. */ |
c6ebd6cf | 4036 | if (!target_async_permitted) |
92d1e331 | 4037 | wait_forever_enabled_p = 1; |
6426a772 | 4038 | |
2d717e4f DJ |
4039 | /* If we're connected to a running target, target_preopen will kill it. |
4040 | But if we're connected to a target system with no running process, | |
4041 | then we will still be connected when it returns. Ask this question | |
4042 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4043 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4044 | { |
4045 | if (!from_tty | |
4046 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4047 | pop_target (); | |
4048 | else | |
4049 | error (_("Still connected.")); | |
4050 | } | |
4051 | ||
c906108c SS |
4052 | target_preopen (from_tty); |
4053 | ||
4054 | unpush_target (target); | |
4055 | ||
2d717e4f DJ |
4056 | /* This time without a query. If we were connected to an |
4057 | extended-remote target and target_preopen killed the running | |
4058 | process, we may still be connected. If we are starting "target | |
4059 | remote" now, the extended-remote target will not have been | |
4060 | removed by unpush_target. */ | |
c35b1492 | 4061 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4062 | pop_target (); |
4063 | ||
89be2091 DJ |
4064 | /* Make sure we send the passed signals list the next time we resume. */ |
4065 | xfree (last_pass_packet); | |
4066 | last_pass_packet = NULL; | |
4067 | ||
ad9a8f3f | 4068 | remote_fileio_reset (); |
1dd41f16 NS |
4069 | reopen_exec_file (); |
4070 | reread_symbols (); | |
4071 | ||
9db8d71f | 4072 | remote_desc = remote_serial_open (name); |
c906108c SS |
4073 | if (!remote_desc) |
4074 | perror_with_name (name); | |
4075 | ||
4076 | if (baud_rate != -1) | |
4077 | { | |
2cd58942 | 4078 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4079 | { |
9b74d5d3 KB |
4080 | /* The requested speed could not be set. Error out to |
4081 | top level after closing remote_desc. Take care to | |
4082 | set remote_desc to NULL to avoid closing remote_desc | |
4083 | more than once. */ | |
2cd58942 | 4084 | serial_close (remote_desc); |
9b74d5d3 | 4085 | remote_desc = NULL; |
c906108c SS |
4086 | perror_with_name (name); |
4087 | } | |
4088 | } | |
4089 | ||
2cd58942 | 4090 | serial_raw (remote_desc); |
c906108c SS |
4091 | |
4092 | /* If there is something sitting in the buffer we might take it as a | |
4093 | response to a command, which would be bad. */ | |
2cd58942 | 4094 | serial_flush_input (remote_desc); |
c906108c SS |
4095 | |
4096 | if (from_tty) | |
4097 | { | |
4098 | puts_filtered ("Remote debugging using "); | |
4099 | puts_filtered (name); | |
4100 | puts_filtered ("\n"); | |
4101 | } | |
23860348 | 4102 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4103 | |
74531fed PA |
4104 | /* Register extra event sources in the event loop. */ |
4105 | remote_async_inferior_event_token | |
4106 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4107 | NULL); | |
4108 | remote_async_get_pending_events_token | |
4109 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4110 | NULL); | |
4111 | ||
be2a5f71 DJ |
4112 | /* Reset the target state; these things will be queried either by |
4113 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4114 | init_all_packet_configs (); |
74531fed | 4115 | rs->cached_wait_status = 0; |
be2a5f71 | 4116 | rs->explicit_packet_size = 0; |
a6f3e723 | 4117 | rs->noack_mode = 0; |
82f73884 PA |
4118 | rs->multi_process_aware = 0; |
4119 | rs->extended = extended_p; | |
74531fed | 4120 | rs->non_stop_aware = 0; |
e24a49d8 | 4121 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4122 | rs->ctrlc_pending_p = 0; |
802188a7 | 4123 | |
79d7f229 PA |
4124 | general_thread = not_sent_ptid; |
4125 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4126 | remote_traceframe_number = -1; |
c906108c | 4127 | |
9d1f7ab2 MS |
4128 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4129 | use_threadinfo_query = 1; | |
4130 | use_threadextra_query = 1; | |
4131 | ||
c6ebd6cf | 4132 | if (target_async_permitted) |
92d1e331 | 4133 | { |
23860348 | 4134 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4135 | remote_async_terminal_ours_p = 1; |
4136 | ||
4137 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4138 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4139 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4140 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4141 | around this. Eventually a mechanism that allows |
92d1e331 | 4142 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4143 | implemented. */ |
92d1e331 DJ |
4144 | wait_forever_enabled_p = 0; |
4145 | } | |
4146 | ||
23860348 | 4147 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4148 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4149 | |
74531fed PA |
4150 | /* Start afresh. */ |
4151 | init_thread_list (); | |
4152 | ||
36918e70 | 4153 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4154 | target (we'd otherwise be in an inconsistent state) and then |
4155 | propogate the error on up the exception chain. This ensures that | |
4156 | the caller doesn't stumble along blindly assuming that the | |
4157 | function succeeded. The CLI doesn't have this problem but other | |
4158 | UI's, such as MI do. | |
36918e70 AC |
4159 | |
4160 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4161 | this function should return an error indication letting the | |
ce2826aa | 4162 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4163 | ``target remote'' is directly wired to this function making that |
4164 | impossible. On a positive note, the CLI side of this problem has | |
4165 | been fixed - the function set_cmd_context() makes it possible for | |
4166 | all the ``target ....'' commands to share a common callback | |
4167 | function. See cli-dump.c. */ | |
109c3e39 | 4168 | { |
04bd08de | 4169 | volatile struct gdb_exception ex; |
2d717e4f | 4170 | |
04bd08de TT |
4171 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4172 | { | |
4173 | remote_start_remote (from_tty, target, extended_p); | |
4174 | } | |
109c3e39 AC |
4175 | if (ex.reason < 0) |
4176 | { | |
c8d104ad PA |
4177 | /* Pop the partially set up target - unless something else did |
4178 | already before throwing the exception. */ | |
4179 | if (remote_desc != NULL) | |
4180 | pop_target (); | |
c6ebd6cf | 4181 | if (target_async_permitted) |
109c3e39 AC |
4182 | wait_forever_enabled_p = 1; |
4183 | throw_exception (ex); | |
4184 | } | |
4185 | } | |
c906108c | 4186 | |
c6ebd6cf | 4187 | if (target_async_permitted) |
92d1e331 | 4188 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4189 | } |
4190 | ||
c906108c SS |
4191 | /* This takes a program previously attached to and detaches it. After |
4192 | this is done, GDB can be used to debug some other program. We | |
4193 | better not have left any breakpoints in the target program or it'll | |
4194 | die when it hits one. */ | |
4195 | ||
4196 | static void | |
2d717e4f | 4197 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4198 | { |
82f73884 | 4199 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4200 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4201 | |
4202 | if (args) | |
8a3fe4f8 | 4203 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4204 | |
2d717e4f DJ |
4205 | if (!target_has_execution) |
4206 | error (_("No process to detach from.")); | |
4207 | ||
c906108c | 4208 | /* Tell the remote target to detach. */ |
82f73884 PA |
4209 | if (remote_multi_process_p (rs)) |
4210 | sprintf (rs->buf, "D;%x", pid); | |
4211 | else | |
4212 | strcpy (rs->buf, "D"); | |
4213 | ||
4ddda9b5 PA |
4214 | putpkt (rs->buf); |
4215 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4216 | ||
82f73884 PA |
4217 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4218 | ; | |
4219 | else if (rs->buf[0] == '\0') | |
4220 | error (_("Remote doesn't know how to detach")); | |
4221 | else | |
4ddda9b5 | 4222 | error (_("Can't detach process.")); |
c906108c | 4223 | |
c906108c | 4224 | if (from_tty) |
2d717e4f | 4225 | { |
82f73884 PA |
4226 | if (remote_multi_process_p (rs)) |
4227 | printf_filtered (_("Detached from remote %s.\n"), | |
4228 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4229 | else |
82f73884 PA |
4230 | { |
4231 | if (extended) | |
4232 | puts_filtered (_("Detached from remote process.\n")); | |
4233 | else | |
4234 | puts_filtered (_("Ending remote debugging.\n")); | |
4235 | } | |
2d717e4f | 4236 | } |
82f73884 | 4237 | |
74531fed | 4238 | discard_pending_stop_replies (pid); |
82f73884 | 4239 | target_mourn_inferior (); |
2d717e4f DJ |
4240 | } |
4241 | ||
4242 | static void | |
136d6dae | 4243 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4244 | { |
4245 | remote_detach_1 (args, from_tty, 0); | |
4246 | } | |
4247 | ||
4248 | static void | |
136d6dae | 4249 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4250 | { |
4251 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4252 | } |
4253 | ||
6ad8ae5c DJ |
4254 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4255 | ||
43ff13b4 | 4256 | static void |
597320e7 | 4257 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4258 | { |
43ff13b4 | 4259 | if (args) |
2d717e4f | 4260 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4261 | |
2d717e4f DJ |
4262 | /* Make sure we unpush even the extended remote targets; mourn |
4263 | won't do it. So call remote_mourn_1 directly instead of | |
4264 | target_mourn_inferior. */ | |
4265 | remote_mourn_1 (target); | |
4266 | ||
43ff13b4 JM |
4267 | if (from_tty) |
4268 | puts_filtered ("Ending remote debugging.\n"); | |
4269 | } | |
4270 | ||
2d717e4f DJ |
4271 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4272 | be chatty about it. */ | |
4273 | ||
4274 | static void | |
4275 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4276 | { | |
4277 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4278 | int pid; |
96ef3384 | 4279 | char *wait_status = NULL; |
2d717e4f | 4280 | |
74164c56 | 4281 | pid = parse_pid_to_attach (args); |
2d717e4f | 4282 | |
74164c56 JK |
4283 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4284 | way as in other targets. */ | |
2d717e4f DJ |
4285 | |
4286 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4287 | error (_("This target does not support attaching to a process")); | |
4288 | ||
4289 | sprintf (rs->buf, "vAttach;%x", pid); | |
4290 | putpkt (rs->buf); | |
4291 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4292 | ||
3e43a32a MS |
4293 | if (packet_ok (rs->buf, |
4294 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f DJ |
4295 | { |
4296 | if (from_tty) | |
4297 | printf_unfiltered (_("Attached to %s\n"), | |
4298 | target_pid_to_str (pid_to_ptid (pid))); | |
4299 | ||
74531fed PA |
4300 | if (!non_stop) |
4301 | { | |
4302 | /* Save the reply for later. */ | |
4303 | wait_status = alloca (strlen (rs->buf) + 1); | |
4304 | strcpy (wait_status, rs->buf); | |
4305 | } | |
4306 | else if (strcmp (rs->buf, "OK") != 0) | |
4307 | error (_("Attaching to %s failed with: %s"), | |
4308 | target_pid_to_str (pid_to_ptid (pid)), | |
4309 | rs->buf); | |
2d717e4f DJ |
4310 | } |
4311 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4312 | error (_("This target does not support attaching to a process")); | |
4313 | else | |
4314 | error (_("Attaching to %s failed"), | |
4315 | target_pid_to_str (pid_to_ptid (pid))); | |
4316 | ||
49c62f2e | 4317 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4318 | |
2d717e4f | 4319 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4320 | |
bad34192 PA |
4321 | if (non_stop) |
4322 | { | |
4323 | struct thread_info *thread; | |
79d7f229 | 4324 | |
bad34192 PA |
4325 | /* Get list of threads. */ |
4326 | remote_threads_info (target); | |
82f73884 | 4327 | |
bad34192 PA |
4328 | thread = first_thread_of_process (pid); |
4329 | if (thread) | |
4330 | inferior_ptid = thread->ptid; | |
4331 | else | |
4332 | inferior_ptid = pid_to_ptid (pid); | |
4333 | ||
4334 | /* Invalidate our notion of the remote current thread. */ | |
4335 | record_currthread (minus_one_ptid); | |
4336 | } | |
74531fed | 4337 | else |
bad34192 PA |
4338 | { |
4339 | /* Now, if we have thread information, update inferior_ptid. */ | |
4340 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4341 | ||
4342 | /* Add the main thread to the thread list. */ | |
4343 | add_thread_silent (inferior_ptid); | |
4344 | } | |
c0a2216e | 4345 | |
96ef3384 UW |
4346 | /* Next, if the target can specify a description, read it. We do |
4347 | this before anything involving memory or registers. */ | |
4348 | target_find_description (); | |
4349 | ||
74531fed PA |
4350 | if (!non_stop) |
4351 | { | |
4352 | /* Use the previously fetched status. */ | |
4353 | gdb_assert (wait_status != NULL); | |
4354 | ||
4355 | if (target_can_async_p ()) | |
4356 | { | |
4357 | struct stop_reply *stop_reply; | |
4358 | struct cleanup *old_chain; | |
4359 | ||
4360 | stop_reply = stop_reply_xmalloc (); | |
4361 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4362 | remote_parse_stop_reply (wait_status, stop_reply); | |
4363 | discard_cleanups (old_chain); | |
4364 | push_stop_reply (stop_reply); | |
4365 | ||
4366 | target_async (inferior_event_handler, 0); | |
4367 | } | |
4368 | else | |
4369 | { | |
4370 | gdb_assert (wait_status != NULL); | |
4371 | strcpy (rs->buf, wait_status); | |
4372 | rs->cached_wait_status = 1; | |
4373 | } | |
4374 | } | |
4375 | else | |
4376 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4377 | } |
4378 | ||
4379 | static void | |
136d6dae | 4380 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4381 | { |
136d6dae | 4382 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4383 | } |
4384 | ||
c906108c SS |
4385 | /* Convert hex digit A to a number. */ |
4386 | ||
30559e10 | 4387 | static int |
fba45db2 | 4388 | fromhex (int a) |
c906108c SS |
4389 | { |
4390 | if (a >= '0' && a <= '9') | |
4391 | return a - '0'; | |
4392 | else if (a >= 'a' && a <= 'f') | |
4393 | return a - 'a' + 10; | |
4394 | else if (a >= 'A' && a <= 'F') | |
4395 | return a - 'A' + 10; | |
c5aa993b | 4396 | else |
8a3fe4f8 | 4397 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4398 | } |
4399 | ||
00bf0b85 | 4400 | int |
cfd77fa1 | 4401 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4402 | { |
4403 | int i; | |
4404 | ||
30559e10 MS |
4405 | for (i = 0; i < count; i++) |
4406 | { | |
4407 | if (hex[0] == 0 || hex[1] == 0) | |
4408 | { | |
4409 | /* Hex string is short, or of uneven length. | |
23860348 | 4410 | Return the count that has been converted so far. */ |
30559e10 MS |
4411 | return i; |
4412 | } | |
4413 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4414 | hex += 2; | |
4415 | } | |
4416 | return i; | |
4417 | } | |
4418 | ||
c906108c SS |
4419 | /* Convert number NIB to a hex digit. */ |
4420 | ||
4421 | static int | |
fba45db2 | 4422 | tohex (int nib) |
c906108c SS |
4423 | { |
4424 | if (nib < 10) | |
c5aa993b | 4425 | return '0' + nib; |
c906108c | 4426 | else |
c5aa993b | 4427 | return 'a' + nib - 10; |
c906108c | 4428 | } |
30559e10 | 4429 | |
00bf0b85 | 4430 | int |
cfd77fa1 | 4431 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4432 | { |
4433 | int i; | |
a744cf53 | 4434 | |
23860348 | 4435 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4436 | if (count == 0) |
cfd77fa1 | 4437 | count = strlen ((char *) bin); |
30559e10 MS |
4438 | |
4439 | for (i = 0; i < count; i++) | |
4440 | { | |
4441 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4442 | *hex++ = tohex (*bin++ & 0xf); | |
4443 | } | |
4444 | *hex = 0; | |
4445 | return i; | |
4446 | } | |
c906108c | 4447 | \f |
506fb367 DJ |
4448 | /* Check for the availability of vCont. This function should also check |
4449 | the response. */ | |
c906108c SS |
4450 | |
4451 | static void | |
6d820c5c | 4452 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4453 | { |
2e9f7625 | 4454 | char *buf; |
6d820c5c | 4455 | |
2e9f7625 DJ |
4456 | strcpy (rs->buf, "vCont?"); |
4457 | putpkt (rs->buf); | |
6d820c5c | 4458 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4459 | buf = rs->buf; |
c906108c | 4460 | |
506fb367 DJ |
4461 | /* Make sure that the features we assume are supported. */ |
4462 | if (strncmp (buf, "vCont", 5) == 0) | |
4463 | { | |
4464 | char *p = &buf[5]; | |
4465 | int support_s, support_S, support_c, support_C; | |
4466 | ||
4467 | support_s = 0; | |
4468 | support_S = 0; | |
4469 | support_c = 0; | |
4470 | support_C = 0; | |
74531fed | 4471 | rs->support_vCont_t = 0; |
506fb367 DJ |
4472 | while (p && *p == ';') |
4473 | { | |
4474 | p++; | |
4475 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4476 | support_s = 1; | |
4477 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4478 | support_S = 1; | |
4479 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4480 | support_c = 1; | |
4481 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4482 | support_C = 1; | |
74531fed PA |
4483 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4484 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4485 | |
4486 | p = strchr (p, ';'); | |
4487 | } | |
c906108c | 4488 | |
506fb367 DJ |
4489 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4490 | BUF will make packet_ok disable the packet. */ | |
4491 | if (!support_s || !support_S || !support_c || !support_C) | |
4492 | buf[0] = 0; | |
4493 | } | |
c906108c | 4494 | |
444abaca | 4495 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4496 | } |
c906108c | 4497 | |
0d8f58ca PA |
4498 | /* Helper function for building "vCont" resumptions. Write a |
4499 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4500 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4501 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4502 | resumed thread should be single-stepped and/or signalled. If PTID | |
4503 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4504 | represents a process, then all threads of the process are resumed; | |
4505 | the thread to be stepped and/or signalled is given in the global | |
4506 | INFERIOR_PTID. */ | |
4507 | ||
4508 | static char * | |
4509 | append_resumption (char *p, char *endp, | |
4510 | ptid_t ptid, int step, enum target_signal siggnal) | |
4511 | { | |
4512 | struct remote_state *rs = get_remote_state (); | |
4513 | ||
4514 | if (step && siggnal != TARGET_SIGNAL_0) | |
4515 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4516 | else if (step) | |
4517 | p += xsnprintf (p, endp - p, ";s"); | |
4518 | else if (siggnal != TARGET_SIGNAL_0) | |
4519 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4520 | else | |
4521 | p += xsnprintf (p, endp - p, ";c"); | |
4522 | ||
4523 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4524 | { | |
4525 | ptid_t nptid; | |
4526 | ||
4527 | /* All (-1) threads of process. */ | |
4528 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4529 | ||
4530 | p += xsnprintf (p, endp - p, ":"); | |
4531 | p = write_ptid (p, endp, nptid); | |
4532 | } | |
4533 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4534 | { | |
4535 | p += xsnprintf (p, endp - p, ":"); | |
4536 | p = write_ptid (p, endp, ptid); | |
4537 | } | |
4538 | ||
4539 | return p; | |
4540 | } | |
4541 | ||
506fb367 DJ |
4542 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4543 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4544 | resumed thread should be single-stepped and/or signalled. If PTID |
4545 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4546 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4547 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4548 | |
506fb367 DJ |
4549 | This function issues a strict subset of all possible vCont commands at the |
4550 | moment. */ | |
44eaed12 | 4551 | |
506fb367 DJ |
4552 | static int |
4553 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4554 | { | |
4555 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4556 | char *p; |
4557 | char *endp; | |
44eaed12 | 4558 | |
444abaca | 4559 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4560 | remote_vcont_probe (rs); |
44eaed12 | 4561 | |
444abaca | 4562 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4563 | return 0; |
44eaed12 | 4564 | |
82f73884 PA |
4565 | p = rs->buf; |
4566 | endp = rs->buf + get_remote_packet_size (); | |
4567 | ||
506fb367 DJ |
4568 | /* If we could generate a wider range of packets, we'd have to worry |
4569 | about overflowing BUF. Should there be a generic | |
4570 | "multi-part-packet" packet? */ | |
4571 | ||
0d8f58ca PA |
4572 | p += xsnprintf (p, endp - p, "vCont"); |
4573 | ||
79d7f229 | 4574 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4575 | { |
79d7f229 PA |
4576 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4577 | so we don't have any TID numbers the inferior will | |
4578 | understand. Make sure to only send forms that do not specify | |
4579 | a TID. */ | |
a9cbf802 | 4580 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4581 | } |
0d8f58ca | 4582 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4583 | { |
0d8f58ca PA |
4584 | /* Resume all threads (of all processes, or of a single |
4585 | process), with preference for INFERIOR_PTID. This assumes | |
4586 | inferior_ptid belongs to the set of all threads we are about | |
4587 | to resume. */ | |
4588 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4589 | { |
0d8f58ca PA |
4590 | /* Step inferior_ptid, with or without signal. */ |
4591 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4592 | } |
0d8f58ca PA |
4593 | |
4594 | /* And continue others without a signal. */ | |
a9cbf802 | 4595 | append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); |
c906108c SS |
4596 | } |
4597 | else | |
506fb367 DJ |
4598 | { |
4599 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4600 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4601 | } |
c906108c | 4602 | |
82f73884 PA |
4603 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4604 | putpkt (rs->buf); | |
506fb367 | 4605 | |
74531fed PA |
4606 | if (non_stop) |
4607 | { | |
4608 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4609 | reply will be reported asynchronously by means of a `%Stop' | |
4610 | notification. */ | |
4611 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4612 | if (strcmp (rs->buf, "OK") != 0) | |
4613 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4614 | } | |
4615 | ||
506fb367 | 4616 | return 1; |
c906108c | 4617 | } |
43ff13b4 | 4618 | |
506fb367 DJ |
4619 | /* Tell the remote machine to resume. */ |
4620 | ||
4621 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4622 | ||
4623 | static int last_sent_step; | |
4624 | ||
43ff13b4 | 4625 | static void |
28439f5e PA |
4626 | remote_resume (struct target_ops *ops, |
4627 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4628 | { |
d01949b6 | 4629 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4630 | char *buf; |
43ff13b4 | 4631 | |
43ff13b4 JM |
4632 | last_sent_signal = siggnal; |
4633 | last_sent_step = step; | |
4634 | ||
506fb367 | 4635 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4636 | /* No reverse support (yet) for vCont. */ |
4637 | if (execution_direction != EXEC_REVERSE) | |
4638 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4639 | goto done; | |
506fb367 | 4640 | |
79d7f229 PA |
4641 | /* All other supported resume packets do use Hc, so set the continue |
4642 | thread. */ | |
4643 | if (ptid_equal (ptid, minus_one_ptid)) | |
4644 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4645 | else |
79d7f229 | 4646 | set_continue_thread (ptid); |
506fb367 | 4647 | |
2e9f7625 | 4648 | buf = rs->buf; |
b2175913 MS |
4649 | if (execution_direction == EXEC_REVERSE) |
4650 | { | |
4651 | /* We don't pass signals to the target in reverse exec mode. */ | |
4652 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
7ea6d463 | 4653 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4654 | siggnal); |
40ab02ce MS |
4655 | |
4656 | if (step | |
4657 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4658 | error (_("Remote reverse-step not supported.")); | |
4659 | if (!step | |
4660 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4661 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4662 | |
b2175913 MS |
4663 | strcpy (buf, step ? "bs" : "bc"); |
4664 | } | |
4665 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4666 | { |
4667 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4668 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4669 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4670 | buf[3] = '\0'; |
4671 | } | |
4672 | else | |
c5aa993b | 4673 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4674 | |
44eaed12 | 4675 | putpkt (buf); |
43ff13b4 | 4676 | |
75c99385 | 4677 | done: |
2acceee2 | 4678 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4679 | with the event loop. NOTE: this is the one place where all the |
4680 | execution commands end up. We could alternatively do this in each | |
23860348 | 4681 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4682 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4683 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4684 | NOT asynchronously. */ |
362646f5 | 4685 | if (target_can_async_p ()) |
2acceee2 | 4686 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4687 | |
4688 | /* We've just told the target to resume. The remote server will | |
4689 | wait for the inferior to stop, and then send a stop reply. In | |
4690 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4691 | because the stub wouldn't be ready to process it. This applies |
4692 | only to the base all-stop protocol, however. In non-stop (which | |
4693 | only supports vCont), the stub replies with an "OK", and is | |
4694 | immediate able to process further serial input. */ | |
4695 | if (!non_stop) | |
4696 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4697 | } |
c906108c | 4698 | \f |
43ff13b4 JM |
4699 | |
4700 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4701 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4702 | static void |
fba45db2 | 4703 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4704 | { |
43ff13b4 JM |
4705 | signal (SIGINT, handle_remote_sigint); |
4706 | } | |
4707 | ||
23860348 | 4708 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4709 | static void |
fba45db2 | 4710 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4711 | { |
4712 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4713 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4714 | } | |
4715 | ||
4716 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4717 | sent once. It will take effect the second time that the user sends | |
23860348 | 4718 | a ^C. */ |
43ff13b4 | 4719 | static void |
fba45db2 | 4720 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4721 | { |
b803fb0f | 4722 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4723 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4724 | } | |
4725 | ||
6426a772 | 4726 | /* Perform the real interruption of the target execution, in response |
23860348 | 4727 | to a ^C. */ |
c5aa993b | 4728 | static void |
fba45db2 | 4729 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4730 | { |
4731 | if (remote_debug) | |
4732 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4733 | ||
94cc34af | 4734 | target_stop (inferior_ptid); |
43ff13b4 JM |
4735 | } |
4736 | ||
0df8b418 | 4737 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4738 | up on the target alltogether. */ |
2df3850c | 4739 | void |
fba45db2 | 4740 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4741 | { |
2df3850c JM |
4742 | if (remote_debug) |
4743 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4744 | |
4745 | interrupt_query (); | |
43ff13b4 JM |
4746 | } |
4747 | ||
4748 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4749 | stopped. */ |
6426a772 JM |
4750 | static void |
4751 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4752 | { |
4753 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4754 | } |
4755 | ||
c906108c SS |
4756 | /* Send ^C to target to halt it. Target will respond, and send us a |
4757 | packet. */ | |
507f3c78 | 4758 | static void (*ofunc) (int); |
c906108c | 4759 | |
0df8b418 MS |
4760 | /* The command line interface's stop routine. This function is installed |
4761 | as a signal handler for SIGINT. The first time a user requests a | |
4762 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4763 | response from the target (it didn't stop when the user requested it), |
23860348 | 4764 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4765 | static void |
fba45db2 | 4766 | remote_interrupt (int signo) |
c906108c | 4767 | { |
23860348 | 4768 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4769 | signal (signo, remote_interrupt_twice); |
4770 | ||
b803fb0f | 4771 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4772 | } |
4773 | ||
4774 | /* The user typed ^C twice. */ | |
4775 | ||
4776 | static void | |
fba45db2 | 4777 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4778 | { |
4779 | signal (signo, ofunc); | |
b803fb0f | 4780 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4781 | signal (signo, remote_interrupt); |
4782 | } | |
7a292a7a | 4783 | |
74531fed PA |
4784 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4785 | thread, all threads of a remote process, or all threads of all | |
4786 | processes. */ | |
4787 | ||
4788 | static void | |
4789 | remote_stop_ns (ptid_t ptid) | |
4790 | { | |
4791 | struct remote_state *rs = get_remote_state (); | |
4792 | char *p = rs->buf; | |
4793 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4794 | |
4795 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4796 | remote_vcont_probe (rs); | |
4797 | ||
4798 | if (!rs->support_vCont_t) | |
4799 | error (_("Remote server does not support stopping threads")); | |
4800 | ||
f91d3df5 PA |
4801 | if (ptid_equal (ptid, minus_one_ptid) |
4802 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4803 | p += xsnprintf (p, endp - p, "vCont;t"); |
4804 | else | |
4805 | { | |
4806 | ptid_t nptid; | |
4807 | ||
74531fed PA |
4808 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4809 | ||
4810 | if (ptid_is_pid (ptid)) | |
4811 | /* All (-1) threads of process. */ | |
4812 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4813 | else | |
4814 | { | |
4815 | /* Small optimization: if we already have a stop reply for | |
4816 | this thread, no use in telling the stub we want this | |
4817 | stopped. */ | |
4818 | if (peek_stop_reply (ptid)) | |
4819 | return; | |
4820 | ||
4821 | nptid = ptid; | |
4822 | } | |
4823 | ||
a9cbf802 | 4824 | write_ptid (p, endp, nptid); |
74531fed PA |
4825 | } |
4826 | ||
4827 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4828 | come in asynchronously by notification. */ | |
4829 | putpkt (rs->buf); | |
4830 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4831 | if (strcmp (rs->buf, "OK") != 0) | |
4832 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4833 | } | |
4834 | ||
4835 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4836 | remote target. It is undefined which thread of which process | |
4837 | reports the stop. */ | |
4838 | ||
4839 | static void | |
4840 | remote_stop_as (ptid_t ptid) | |
4841 | { | |
4842 | struct remote_state *rs = get_remote_state (); | |
4843 | ||
3a29589a DJ |
4844 | rs->ctrlc_pending_p = 1; |
4845 | ||
74531fed PA |
4846 | /* If the inferior is stopped already, but the core didn't know |
4847 | about it yet, just ignore the request. The cached wait status | |
4848 | will be collected in remote_wait. */ | |
4849 | if (rs->cached_wait_status) | |
4850 | return; | |
4851 | ||
9a7071a8 JB |
4852 | /* Send interrupt_sequence to remote target. */ |
4853 | send_interrupt_sequence (); | |
74531fed PA |
4854 | } |
4855 | ||
0df8b418 | 4856 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4857 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4858 | will eventually end up here. */ |
74531fed | 4859 | |
c906108c | 4860 | static void |
94cc34af | 4861 | remote_stop (ptid_t ptid) |
c906108c | 4862 | { |
7a292a7a | 4863 | if (remote_debug) |
0f71a2f6 | 4864 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4865 | |
74531fed PA |
4866 | if (non_stop) |
4867 | remote_stop_ns (ptid); | |
c906108c | 4868 | else |
74531fed | 4869 | remote_stop_as (ptid); |
c906108c SS |
4870 | } |
4871 | ||
4872 | /* Ask the user what to do when an interrupt is received. */ | |
4873 | ||
4874 | static void | |
fba45db2 | 4875 | interrupt_query (void) |
c906108c SS |
4876 | { |
4877 | target_terminal_ours (); | |
4878 | ||
74531fed | 4879 | if (target_can_async_p ()) |
c906108c | 4880 | { |
74531fed | 4881 | signal (SIGINT, handle_sigint); |
315a522e | 4882 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4883 | } |
74531fed PA |
4884 | else |
4885 | { | |
9e2f0ad4 HZ |
4886 | if (query (_("Interrupted while waiting for the program.\n\ |
4887 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4888 | { |
4889 | pop_target (); | |
4890 | deprecated_throw_reason (RETURN_QUIT); | |
4891 | } | |
4892 | } | |
c906108c SS |
4893 | |
4894 | target_terminal_inferior (); | |
4895 | } | |
4896 | ||
6426a772 JM |
4897 | /* Enable/disable target terminal ownership. Most targets can use |
4898 | terminal groups to control terminal ownership. Remote targets are | |
4899 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4900 | is required. */ |
6426a772 JM |
4901 | |
4902 | static void | |
75c99385 | 4903 | remote_terminal_inferior (void) |
6426a772 | 4904 | { |
c6ebd6cf | 4905 | if (!target_async_permitted) |
75c99385 PA |
4906 | /* Nothing to do. */ |
4907 | return; | |
4908 | ||
d9d2d8b6 PA |
4909 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4910 | idempotent. The event-loop GDB talking to an asynchronous target | |
4911 | with a synchronous command calls this function from both | |
4912 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4913 | transfer the terminal to the target when it shouldn't this guard | |
4914 | can go away. */ | |
6426a772 JM |
4915 | if (!remote_async_terminal_ours_p) |
4916 | return; | |
4917 | delete_file_handler (input_fd); | |
4918 | remote_async_terminal_ours_p = 0; | |
4919 | initialize_sigint_signal_handler (); | |
4920 | /* NOTE: At this point we could also register our selves as the | |
4921 | recipient of all input. Any characters typed could then be | |
23860348 | 4922 | passed on down to the target. */ |
6426a772 JM |
4923 | } |
4924 | ||
4925 | static void | |
75c99385 | 4926 | remote_terminal_ours (void) |
6426a772 | 4927 | { |
c6ebd6cf | 4928 | if (!target_async_permitted) |
75c99385 PA |
4929 | /* Nothing to do. */ |
4930 | return; | |
4931 | ||
4932 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4933 | if (remote_async_terminal_ours_p) |
4934 | return; | |
4935 | cleanup_sigint_signal_handler (NULL); | |
4936 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4937 | remote_async_terminal_ours_p = 1; | |
4938 | } | |
4939 | ||
176a6961 | 4940 | static void |
917317f4 | 4941 | remote_console_output (char *msg) |
c906108c SS |
4942 | { |
4943 | char *p; | |
4944 | ||
c5aa993b | 4945 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4946 | { |
4947 | char tb[2]; | |
4948 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4949 | |
c906108c SS |
4950 | tb[0] = c; |
4951 | tb[1] = 0; | |
43ff13b4 | 4952 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4953 | } |
00db5b94 PA |
4954 | gdb_flush (gdb_stdtarg); |
4955 | } | |
74531fed PA |
4956 | |
4957 | typedef struct cached_reg | |
4958 | { | |
4959 | int num; | |
4960 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4961 | } cached_reg_t; | |
4962 | ||
4963 | DEF_VEC_O(cached_reg_t); | |
4964 | ||
4965 | struct stop_reply | |
4966 | { | |
4967 | struct stop_reply *next; | |
4968 | ||
4969 | ptid_t ptid; | |
4970 | ||
4971 | struct target_waitstatus ws; | |
4972 | ||
15148d6a PA |
4973 | /* Expedited registers. This makes remote debugging a bit more |
4974 | efficient for those targets that provide critical registers as | |
4975 | part of their normal status mechanism (as another roundtrip to | |
4976 | fetch them is avoided). */ | |
74531fed PA |
4977 | VEC(cached_reg_t) *regcache; |
4978 | ||
4979 | int stopped_by_watchpoint_p; | |
4980 | CORE_ADDR watch_data_address; | |
4981 | ||
4982 | int solibs_changed; | |
4983 | int replay_event; | |
dc146f7c VP |
4984 | |
4985 | int core; | |
74531fed PA |
4986 | }; |
4987 | ||
4988 | /* The list of already fetched and acknowledged stop events. */ | |
4989 | static struct stop_reply *stop_reply_queue; | |
4990 | ||
4991 | static struct stop_reply * | |
4992 | stop_reply_xmalloc (void) | |
4993 | { | |
4994 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 4995 | |
74531fed PA |
4996 | r->next = NULL; |
4997 | return r; | |
4998 | } | |
4999 | ||
5000 | static void | |
5001 | stop_reply_xfree (struct stop_reply *r) | |
5002 | { | |
5003 | if (r != NULL) | |
5004 | { | |
5005 | VEC_free (cached_reg_t, r->regcache); | |
5006 | xfree (r); | |
5007 | } | |
c906108c SS |
5008 | } |
5009 | ||
74531fed PA |
5010 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
5011 | discard everything. */ | |
c906108c | 5012 | |
74531fed PA |
5013 | static void |
5014 | discard_pending_stop_replies (int pid) | |
c906108c | 5015 | { |
74531fed | 5016 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 5017 | |
74531fed PA |
5018 | /* Discard the in-flight notification. */ |
5019 | if (pending_stop_reply != NULL | |
5020 | && (pid == -1 | |
5021 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
5022 | { | |
5023 | stop_reply_xfree (pending_stop_reply); | |
5024 | pending_stop_reply = NULL; | |
5025 | } | |
c906108c | 5026 | |
74531fed PA |
5027 | /* Discard the stop replies we have already pulled with |
5028 | vStopped. */ | |
5029 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 5030 | { |
74531fed PA |
5031 | next = reply->next; |
5032 | if (pid == -1 | |
5033 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 5034 | { |
74531fed PA |
5035 | if (reply == stop_reply_queue) |
5036 | stop_reply_queue = reply->next; | |
5037 | else | |
5038 | prev->next = reply->next; | |
5039 | ||
5040 | stop_reply_xfree (reply); | |
9fa2223d | 5041 | } |
74531fed PA |
5042 | else |
5043 | prev = reply; | |
c8e38a49 | 5044 | } |
74531fed | 5045 | } |
43ff13b4 | 5046 | |
74531fed | 5047 | /* Cleanup wrapper. */ |
2e9f7625 | 5048 | |
74531fed PA |
5049 | static void |
5050 | do_stop_reply_xfree (void *arg) | |
5051 | { | |
5052 | struct stop_reply *r = arg; | |
a744cf53 | 5053 | |
74531fed PA |
5054 | stop_reply_xfree (r); |
5055 | } | |
75c99385 | 5056 | |
74531fed PA |
5057 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5058 | remove it from the queue, and return it. Returns NULL if none is | |
5059 | found. If there are still queued events left to process, tell the | |
5060 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5061 | |
74531fed PA |
5062 | static struct stop_reply * |
5063 | queued_stop_reply (ptid_t ptid) | |
5064 | { | |
0723dbf5 PA |
5065 | struct stop_reply *it; |
5066 | struct stop_reply **it_link; | |
74531fed | 5067 | |
0723dbf5 PA |
5068 | it = stop_reply_queue; |
5069 | it_link = &stop_reply_queue; | |
5070 | while (it) | |
c8e38a49 | 5071 | { |
0723dbf5 PA |
5072 | if (ptid_match (it->ptid, ptid)) |
5073 | { | |
5074 | *it_link = it->next; | |
5075 | it->next = NULL; | |
5076 | break; | |
5077 | } | |
e24a49d8 | 5078 | |
0723dbf5 PA |
5079 | it_link = &it->next; |
5080 | it = *it_link; | |
5081 | } | |
74531fed PA |
5082 | |
5083 | if (stop_reply_queue) | |
5084 | /* There's still at least an event left. */ | |
5085 | mark_async_event_handler (remote_async_inferior_event_token); | |
5086 | ||
5087 | return it; | |
5088 | } | |
5089 | ||
5090 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5091 | know that we now have at least one queued event left to pass to the | |
5092 | core side, tell the event loop to get back to target_wait soon. */ | |
5093 | ||
5094 | static void | |
5095 | push_stop_reply (struct stop_reply *new_event) | |
5096 | { | |
5097 | struct stop_reply *event; | |
5098 | ||
5099 | if (stop_reply_queue) | |
5100 | { | |
5101 | for (event = stop_reply_queue; | |
5102 | event && event->next; | |
5103 | event = event->next) | |
5104 | ; | |
5105 | ||
5106 | event->next = new_event; | |
5107 | } | |
5108 | else | |
5109 | stop_reply_queue = new_event; | |
5110 | ||
5111 | mark_async_event_handler (remote_async_inferior_event_token); | |
5112 | } | |
5113 | ||
5114 | /* Returns true if we have a stop reply for PTID. */ | |
5115 | ||
5116 | static int | |
5117 | peek_stop_reply (ptid_t ptid) | |
5118 | { | |
5119 | struct stop_reply *it; | |
5120 | ||
5121 | for (it = stop_reply_queue; it; it = it->next) | |
5122 | if (ptid_equal (ptid, it->ptid)) | |
5123 | { | |
5124 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5125 | return 1; | |
5126 | } | |
5127 | ||
5128 | return 0; | |
5129 | } | |
5130 | ||
5131 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5132 | result is stored in EVENT, or throws an error. */ | |
5133 | ||
5134 | static void | |
5135 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5136 | { | |
5137 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5138 | ULONGEST addr; | |
5139 | char *p; | |
5140 | ||
5141 | event->ptid = null_ptid; | |
5142 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5143 | event->ws.value.integer = 0; | |
5144 | event->solibs_changed = 0; | |
5145 | event->replay_event = 0; | |
5146 | event->stopped_by_watchpoint_p = 0; | |
5147 | event->regcache = NULL; | |
dc146f7c | 5148 | event->core = -1; |
74531fed PA |
5149 | |
5150 | switch (buf[0]) | |
5151 | { | |
5152 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5153 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5154 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5155 | ss = signal number | |
5156 | n... = register number | |
5157 | r... = register contents | |
5158 | */ | |
5159 | ||
5160 | p = &buf[3]; /* after Txx */ | |
5161 | while (*p) | |
5162 | { | |
5163 | char *p1; | |
5164 | char *p_temp; | |
5165 | int fieldsize; | |
5166 | LONGEST pnum = 0; | |
43ff13b4 | 5167 | |
cea39f65 MS |
5168 | /* If the packet contains a register number, save it in |
5169 | pnum and set p1 to point to the character following it. | |
5170 | Otherwise p1 points to p. */ | |
3c3bea1c | 5171 | |
cea39f65 MS |
5172 | /* If this packet is an awatch packet, don't parse the 'a' |
5173 | as a register number. */ | |
c8e38a49 | 5174 | |
dc146f7c VP |
5175 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5176 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5177 | { |
5178 | /* Read the ``P'' register number. */ | |
5179 | pnum = strtol (p, &p_temp, 16); | |
5180 | p1 = p_temp; | |
5181 | } | |
5182 | else | |
5183 | p1 = p; | |
802188a7 | 5184 | |
cea39f65 MS |
5185 | if (p1 == p) /* No register number present here. */ |
5186 | { | |
5187 | p1 = strchr (p, ':'); | |
5188 | if (p1 == NULL) | |
5189 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5190 | Packet: '%s'\n"), |
cea39f65 MS |
5191 | p, buf); |
5192 | if (strncmp (p, "thread", p1 - p) == 0) | |
5193 | event->ptid = read_ptid (++p1, &p); | |
5194 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5195 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5196 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5197 | { | |
5198 | event->stopped_by_watchpoint_p = 1; | |
5199 | p = unpack_varlen_hex (++p1, &addr); | |
5200 | event->watch_data_address = (CORE_ADDR) addr; | |
5201 | } | |
5202 | else if (strncmp (p, "library", p1 - p) == 0) | |
5203 | { | |
5204 | p1++; | |
5205 | p_temp = p1; | |
5206 | while (*p_temp && *p_temp != ';') | |
5207 | p_temp++; | |
c8e38a49 | 5208 | |
cea39f65 MS |
5209 | event->solibs_changed = 1; |
5210 | p = p_temp; | |
5211 | } | |
5212 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5213 | { | |
5214 | /* NO_HISTORY event. | |
5215 | p1 will indicate "begin" or "end", but | |
5216 | it makes no difference for now, so ignore it. */ | |
5217 | event->replay_event = 1; | |
5218 | p_temp = strchr (p1 + 1, ';'); | |
5219 | if (p_temp) | |
c8e38a49 | 5220 | p = p_temp; |
cea39f65 | 5221 | } |
dc146f7c VP |
5222 | else if (strncmp (p, "core", p1 - p) == 0) |
5223 | { | |
5224 | ULONGEST c; | |
a744cf53 | 5225 | |
dc146f7c VP |
5226 | p = unpack_varlen_hex (++p1, &c); |
5227 | event->core = c; | |
5228 | } | |
cea39f65 MS |
5229 | else |
5230 | { | |
5231 | /* Silently skip unknown optional info. */ | |
5232 | p_temp = strchr (p1 + 1, ';'); | |
5233 | if (p_temp) | |
5234 | p = p_temp; | |
5235 | } | |
5236 | } | |
5237 | else | |
5238 | { | |
5239 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5240 | cached_reg_t cached_reg; | |
74531fed | 5241 | |
cea39f65 | 5242 | p = p1; |
75c99385 | 5243 | |
cea39f65 MS |
5244 | if (*p != ':') |
5245 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5246 | Packet: '%s'\n"), |
cea39f65 MS |
5247 | p, buf); |
5248 | ++p; | |
43ff13b4 | 5249 | |
cea39f65 MS |
5250 | if (reg == NULL) |
5251 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5252 | Packet: '%s'\n"), |
7c47795c | 5253 | hex_string (pnum), p, buf); |
c8e38a49 | 5254 | |
cea39f65 | 5255 | cached_reg.num = reg->regnum; |
4100683b | 5256 | |
cea39f65 MS |
5257 | fieldsize = hex2bin (p, cached_reg.data, |
5258 | register_size (target_gdbarch, | |
5259 | reg->regnum)); | |
5260 | p += 2 * fieldsize; | |
5261 | if (fieldsize < register_size (target_gdbarch, | |
5262 | reg->regnum)) | |
5263 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5264 | |
cea39f65 MS |
5265 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5266 | } | |
c8e38a49 | 5267 | |
cea39f65 MS |
5268 | if (*p != ';') |
5269 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5270 | buf, p); | |
5271 | ++p; | |
5272 | } | |
c8e38a49 PA |
5273 | /* fall through */ |
5274 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5275 | if (event->solibs_changed) |
5276 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5277 | else if (event->replay_event) | |
5278 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5279 | else |
5280 | { | |
74531fed PA |
5281 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5282 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5283 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5284 | } | |
5285 | break; | |
5286 | case 'W': /* Target exited. */ | |
5287 | case 'X': | |
5288 | { | |
5289 | char *p; | |
5290 | int pid; | |
5291 | ULONGEST value; | |
82f73884 | 5292 | |
c8e38a49 PA |
5293 | /* GDB used to accept only 2 hex chars here. Stubs should |
5294 | only send more if they detect GDB supports multi-process | |
5295 | support. */ | |
5296 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5297 | |
c8e38a49 PA |
5298 | if (buf[0] == 'W') |
5299 | { | |
5300 | /* The remote process exited. */ | |
74531fed PA |
5301 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5302 | event->ws.value.integer = value; | |
c8e38a49 PA |
5303 | } |
5304 | else | |
5305 | { | |
5306 | /* The remote process exited with a signal. */ | |
74531fed PA |
5307 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5308 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5309 | } |
82f73884 | 5310 | |
c8e38a49 PA |
5311 | /* If no process is specified, assume inferior_ptid. */ |
5312 | pid = ptid_get_pid (inferior_ptid); | |
5313 | if (*p == '\0') | |
5314 | ; | |
5315 | else if (*p == ';') | |
5316 | { | |
5317 | p++; | |
5318 | ||
5319 | if (p == '\0') | |
82f73884 | 5320 | ; |
c8e38a49 PA |
5321 | else if (strncmp (p, |
5322 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5323 | { |
c8e38a49 | 5324 | ULONGEST upid; |
a744cf53 | 5325 | |
c8e38a49 PA |
5326 | p += sizeof ("process:") - 1; |
5327 | unpack_varlen_hex (p, &upid); | |
5328 | pid = upid; | |
82f73884 PA |
5329 | } |
5330 | else | |
5331 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5332 | } |
c8e38a49 PA |
5333 | else |
5334 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5335 | event->ptid = pid_to_ptid (pid); |
5336 | } | |
5337 | break; | |
5338 | } | |
5339 | ||
5340 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5341 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5342 | } | |
5343 | ||
5344 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5345 | stop notification (%Stop). Those can come it at any time, hence, | |
5346 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5347 | making is finished, before querying the stub for more events with | |
5348 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5349 | upon receiving the %Stop notification, something like this could | |
5350 | happen: | |
5351 | ||
5352 | 1.1) --> Hg 1 | |
5353 | 1.2) <-- OK | |
5354 | 1.3) --> g | |
5355 | 1.4) <-- %Stop | |
5356 | 1.5) --> vStopped | |
5357 | 1.6) <-- (registers reply to step #1.3) | |
5358 | ||
5359 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5360 | query. | |
5361 | ||
5362 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5363 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5364 | doing whatever we were doing: | |
5365 | ||
5366 | 2.1) --> Hg 1 | |
5367 | 2.2) <-- OK | |
5368 | 2.3) --> g | |
5369 | 2.4) <-- %Stop | |
5370 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5371 | 2.5) <-- (registers reply to step #2.3) | |
5372 | ||
5373 | Eventualy after step #2.5, we return to the event loop, which | |
5374 | notices there's an event on the | |
5375 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5376 | associated callback --- the function below. At this point, we're | |
5377 | always safe to start a vStopped sequence. : | |
5378 | ||
5379 | 2.6) --> vStopped | |
5380 | 2.7) <-- T05 thread:2 | |
5381 | 2.8) --> vStopped | |
5382 | 2.9) --> OK | |
5383 | */ | |
5384 | ||
5385 | static void | |
5386 | remote_get_pending_stop_replies (void) | |
5387 | { | |
5388 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5389 | |
5390 | if (pending_stop_reply) | |
5391 | { | |
5392 | /* acknowledge */ | |
5393 | putpkt ("vStopped"); | |
5394 | ||
5395 | /* Now we can rely on it. */ | |
5396 | push_stop_reply (pending_stop_reply); | |
5397 | pending_stop_reply = NULL; | |
5398 | ||
5399 | while (1) | |
5400 | { | |
5401 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5402 | if (strcmp (rs->buf, "OK") == 0) | |
5403 | break; | |
5404 | else | |
5405 | { | |
5406 | struct cleanup *old_chain; | |
5407 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5408 | ||
5409 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5410 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5411 | ||
5412 | /* acknowledge */ | |
5413 | putpkt ("vStopped"); | |
5414 | ||
5415 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5416 | { | |
5417 | /* Now we can rely on it. */ | |
5418 | discard_cleanups (old_chain); | |
5419 | push_stop_reply (stop_reply); | |
5420 | } | |
5421 | else | |
5422 | /* We got an unknown stop reply. */ | |
5423 | do_cleanups (old_chain); | |
5424 | } | |
5425 | } | |
5426 | } | |
5427 | } | |
5428 | ||
5429 | ||
5430 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5431 | event that is to be returned to the core. This function always | |
5432 | destroys STOP_REPLY. */ | |
5433 | ||
5434 | static ptid_t | |
5435 | process_stop_reply (struct stop_reply *stop_reply, | |
5436 | struct target_waitstatus *status) | |
5437 | { | |
5438 | ptid_t ptid; | |
5439 | ||
5440 | *status = stop_reply->ws; | |
5441 | ptid = stop_reply->ptid; | |
5442 | ||
5443 | /* If no thread/process was reported by the stub, assume the current | |
5444 | inferior. */ | |
5445 | if (ptid_equal (ptid, null_ptid)) | |
5446 | ptid = inferior_ptid; | |
5447 | ||
5f3563ea PA |
5448 | if (status->kind != TARGET_WAITKIND_EXITED |
5449 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5450 | { |
5f3563ea PA |
5451 | /* Expedited registers. */ |
5452 | if (stop_reply->regcache) | |
5453 | { | |
217f1f79 UW |
5454 | struct regcache *regcache |
5455 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5456 | cached_reg_t *reg; |
5457 | int ix; | |
5458 | ||
5459 | for (ix = 0; | |
5460 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5461 | ix++) | |
217f1f79 | 5462 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5463 | VEC_free (cached_reg_t, stop_reply->regcache); |
5464 | } | |
74531fed | 5465 | |
5f3563ea PA |
5466 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5467 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5468 | |
5469 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5470 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5471 | } |
5472 | ||
74531fed PA |
5473 | stop_reply_xfree (stop_reply); |
5474 | return ptid; | |
5475 | } | |
5476 | ||
5477 | /* The non-stop mode version of target_wait. */ | |
5478 | ||
5479 | static ptid_t | |
47608cb1 | 5480 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5481 | { |
5482 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5483 | struct stop_reply *stop_reply; |
5484 | int ret; | |
5485 | ||
5486 | /* If in non-stop mode, get out of getpkt even if a | |
5487 | notification is received. */ | |
5488 | ||
5489 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5490 | 0 /* forever */); | |
5491 | while (1) | |
5492 | { | |
5493 | if (ret != -1) | |
5494 | switch (rs->buf[0]) | |
5495 | { | |
5496 | case 'E': /* Error of some sort. */ | |
5497 | /* We're out of sync with the target now. Did it continue | |
5498 | or not? We can't tell which thread it was in non-stop, | |
5499 | so just ignore this. */ | |
5500 | warning (_("Remote failure reply: %s"), rs->buf); | |
5501 | break; | |
5502 | case 'O': /* Console output. */ | |
5503 | remote_console_output (rs->buf + 1); | |
5504 | break; | |
5505 | default: | |
5506 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5507 | break; | |
5508 | } | |
5509 | ||
5510 | /* Acknowledge a pending stop reply that may have arrived in the | |
5511 | mean time. */ | |
5512 | if (pending_stop_reply != NULL) | |
5513 | remote_get_pending_stop_replies (); | |
5514 | ||
5515 | /* If indeed we noticed a stop reply, we're done. */ | |
5516 | stop_reply = queued_stop_reply (ptid); | |
5517 | if (stop_reply != NULL) | |
5518 | return process_stop_reply (stop_reply, status); | |
5519 | ||
47608cb1 | 5520 | /* Still no event. If we're just polling for an event, then |
74531fed | 5521 | return to the event loop. */ |
47608cb1 | 5522 | if (options & TARGET_WNOHANG) |
74531fed PA |
5523 | { |
5524 | status->kind = TARGET_WAITKIND_IGNORE; | |
5525 | return minus_one_ptid; | |
5526 | } | |
5527 | ||
47608cb1 | 5528 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5529 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5530 | 1 /* forever */); | |
5531 | } | |
5532 | } | |
5533 | ||
5534 | /* Wait until the remote machine stops, then return, storing status in | |
5535 | STATUS just as `wait' would. */ | |
5536 | ||
5537 | static ptid_t | |
47608cb1 | 5538 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5539 | { |
5540 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5541 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5542 | char *buf; |
74531fed PA |
5543 | struct stop_reply *stop_reply; |
5544 | ||
47608cb1 PA |
5545 | again: |
5546 | ||
74531fed PA |
5547 | status->kind = TARGET_WAITKIND_IGNORE; |
5548 | status->value.integer = 0; | |
5549 | ||
5550 | stop_reply = queued_stop_reply (ptid); | |
5551 | if (stop_reply != NULL) | |
5552 | return process_stop_reply (stop_reply, status); | |
5553 | ||
5554 | if (rs->cached_wait_status) | |
5555 | /* Use the cached wait status, but only once. */ | |
5556 | rs->cached_wait_status = 0; | |
5557 | else | |
5558 | { | |
5559 | int ret; | |
5560 | ||
5561 | if (!target_is_async_p ()) | |
5562 | { | |
5563 | ofunc = signal (SIGINT, remote_interrupt); | |
5564 | /* If the user hit C-c before this packet, or between packets, | |
5565 | pretend that it was hit right here. */ | |
5566 | if (quit_flag) | |
5567 | { | |
5568 | quit_flag = 0; | |
5569 | remote_interrupt (SIGINT); | |
5570 | } | |
5571 | } | |
5572 | ||
5573 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5574 | _never_ wait for ever -> test on target_is_async_p(). | |
5575 | However, before we do that we need to ensure that the caller | |
5576 | knows how to take the target into/out of async mode. */ | |
5577 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5578 | if (!target_is_async_p ()) | |
5579 | signal (SIGINT, ofunc); | |
5580 | } | |
5581 | ||
5582 | buf = rs->buf; | |
5583 | ||
5584 | remote_stopped_by_watchpoint_p = 0; | |
5585 | ||
5586 | /* We got something. */ | |
5587 | rs->waiting_for_stop_reply = 0; | |
5588 | ||
3a29589a DJ |
5589 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5590 | an 'F' or 'O' packet. */ | |
5591 | if (buf[0] != 'F' && buf[0] != 'O') | |
5592 | rs->ctrlc_pending_p = 0; | |
5593 | ||
74531fed PA |
5594 | switch (buf[0]) |
5595 | { | |
5596 | case 'E': /* Error of some sort. */ | |
5597 | /* We're out of sync with the target now. Did it continue or | |
5598 | not? Not is more likely, so report a stop. */ | |
5599 | warning (_("Remote failure reply: %s"), buf); | |
5600 | status->kind = TARGET_WAITKIND_STOPPED; | |
5601 | status->value.sig = TARGET_SIGNAL_0; | |
5602 | break; | |
5603 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5604 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5605 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5606 | break; |
5607 | case 'T': case 'S': case 'X': case 'W': | |
5608 | { | |
5609 | struct stop_reply *stop_reply; | |
5610 | struct cleanup *old_chain; | |
5611 | ||
5612 | stop_reply = stop_reply_xmalloc (); | |
5613 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5614 | remote_parse_stop_reply (buf, stop_reply); | |
5615 | discard_cleanups (old_chain); | |
5616 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5617 | break; |
5618 | } | |
5619 | case 'O': /* Console output. */ | |
5620 | remote_console_output (buf + 1); | |
e24a49d8 | 5621 | |
c8e38a49 PA |
5622 | /* The target didn't really stop; keep waiting. */ |
5623 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5624 | |
c8e38a49 PA |
5625 | break; |
5626 | case '\0': | |
5627 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5628 | { | |
5629 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5630 | remote system doesn't support it. */ | |
5631 | target_terminal_ours_for_output (); | |
5632 | printf_filtered | |
5633 | ("Can't send signals to this remote system. %s not sent.\n", | |
5634 | target_signal_to_name (last_sent_signal)); | |
5635 | last_sent_signal = TARGET_SIGNAL_0; | |
5636 | target_terminal_inferior (); | |
5637 | ||
5638 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5639 | putpkt ((char *) buf); | |
5640 | ||
5641 | /* We just told the target to resume, so a stop reply is in | |
5642 | order. */ | |
e24a49d8 | 5643 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5644 | break; |
43ff13b4 | 5645 | } |
c8e38a49 PA |
5646 | /* else fallthrough */ |
5647 | default: | |
5648 | warning (_("Invalid remote reply: %s"), buf); | |
5649 | /* Keep waiting. */ | |
5650 | rs->waiting_for_stop_reply = 1; | |
5651 | break; | |
43ff13b4 | 5652 | } |
c8e38a49 | 5653 | |
c8e38a49 | 5654 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5655 | { |
5656 | /* Nothing interesting happened. If we're doing a non-blocking | |
5657 | poll, we're done. Otherwise, go back to waiting. */ | |
5658 | if (options & TARGET_WNOHANG) | |
5659 | return minus_one_ptid; | |
5660 | else | |
5661 | goto again; | |
5662 | } | |
74531fed PA |
5663 | else if (status->kind != TARGET_WAITKIND_EXITED |
5664 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5665 | { |
5666 | if (!ptid_equal (event_ptid, null_ptid)) | |
5667 | record_currthread (event_ptid); | |
5668 | else | |
5669 | event_ptid = inferior_ptid; | |
43ff13b4 | 5670 | } |
74531fed PA |
5671 | else |
5672 | /* A process exit. Invalidate our notion of current thread. */ | |
5673 | record_currthread (minus_one_ptid); | |
79d7f229 | 5674 | |
82f73884 | 5675 | return event_ptid; |
43ff13b4 JM |
5676 | } |
5677 | ||
74531fed PA |
5678 | /* Wait until the remote machine stops, then return, storing status in |
5679 | STATUS just as `wait' would. */ | |
5680 | ||
c8e38a49 | 5681 | static ptid_t |
117de6a9 | 5682 | remote_wait (struct target_ops *ops, |
47608cb1 | 5683 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5684 | { |
5685 | ptid_t event_ptid; | |
5686 | ||
74531fed | 5687 | if (non_stop) |
47608cb1 | 5688 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5689 | else |
47608cb1 | 5690 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5691 | |
74531fed | 5692 | if (target_can_async_p ()) |
c8e38a49 | 5693 | { |
74531fed PA |
5694 | /* If there are are events left in the queue tell the event loop |
5695 | to return here. */ | |
5696 | if (stop_reply_queue) | |
5697 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5698 | } |
c8e38a49 PA |
5699 | |
5700 | return event_ptid; | |
5701 | } | |
5702 | ||
74ca34ce | 5703 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5704 | |
b96ec7ac | 5705 | static int |
56be3814 | 5706 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5707 | { |
5708 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5709 | char *buf, *p; |
b96ec7ac AC |
5710 | char regp[MAX_REGISTER_SIZE]; |
5711 | int i; | |
5712 | ||
74ca34ce DJ |
5713 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5714 | return 0; | |
5715 | ||
5716 | if (reg->pnum == -1) | |
5717 | return 0; | |
5718 | ||
2e9f7625 | 5719 | p = rs->buf; |
fcad0fa4 | 5720 | *p++ = 'p'; |
74ca34ce | 5721 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5722 | *p++ = '\0'; |
1f4437a4 MS |
5723 | putpkt (rs->buf); |
5724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5725 | |
2e9f7625 DJ |
5726 | buf = rs->buf; |
5727 | ||
74ca34ce DJ |
5728 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5729 | { | |
5730 | case PACKET_OK: | |
5731 | break; | |
5732 | case PACKET_UNKNOWN: | |
5733 | return 0; | |
5734 | case PACKET_ERROR: | |
27a9c0bf MS |
5735 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5736 | gdbarch_register_name (get_regcache_arch (regcache), | |
5737 | reg->regnum), | |
5738 | buf); | |
74ca34ce | 5739 | } |
3f9a994c JB |
5740 | |
5741 | /* If this register is unfetchable, tell the regcache. */ | |
5742 | if (buf[0] == 'x') | |
8480adf2 | 5743 | { |
56be3814 | 5744 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5745 | return 1; |
b96ec7ac | 5746 | } |
b96ec7ac | 5747 | |
3f9a994c JB |
5748 | /* Otherwise, parse and supply the value. */ |
5749 | p = buf; | |
5750 | i = 0; | |
5751 | while (p[0] != 0) | |
5752 | { | |
5753 | if (p[1] == 0) | |
74ca34ce | 5754 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5755 | |
5756 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5757 | p += 2; | |
5758 | } | |
56be3814 | 5759 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5760 | return 1; |
b96ec7ac AC |
5761 | } |
5762 | ||
74ca34ce DJ |
5763 | /* Fetch the registers included in the target's 'g' packet. */ |
5764 | ||
29709017 DJ |
5765 | static int |
5766 | send_g_packet (void) | |
c906108c | 5767 | { |
d01949b6 | 5768 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5769 | int buf_len; |
c906108c | 5770 | |
74ca34ce DJ |
5771 | sprintf (rs->buf, "g"); |
5772 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5773 | |
29709017 DJ |
5774 | /* We can get out of synch in various cases. If the first character |
5775 | in the buffer is not a hex character, assume that has happened | |
5776 | and try to fetch another packet to read. */ | |
5777 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5778 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5779 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5780 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5781 | { | |
5782 | if (remote_debug) | |
5783 | fprintf_unfiltered (gdb_stdlog, | |
5784 | "Bad register packet; fetching a new packet\n"); | |
5785 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5786 | } | |
5787 | ||
74ca34ce DJ |
5788 | buf_len = strlen (rs->buf); |
5789 | ||
5790 | /* Sanity check the received packet. */ | |
5791 | if (buf_len % 2 != 0) | |
5792 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5793 | |
5794 | return buf_len / 2; | |
5795 | } | |
5796 | ||
5797 | static void | |
56be3814 | 5798 | process_g_packet (struct regcache *regcache) |
29709017 | 5799 | { |
4a22f64d | 5800 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5801 | struct remote_state *rs = get_remote_state (); |
5802 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5803 | int i, buf_len; | |
5804 | char *p; | |
5805 | char *regs; | |
5806 | ||
5807 | buf_len = strlen (rs->buf); | |
5808 | ||
5809 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5810 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5811 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5812 | ||
5813 | /* Save the size of the packet sent to us by the target. It is used | |
5814 | as a heuristic when determining the max size of packets that the | |
5815 | target can safely receive. */ | |
5816 | if (rsa->actual_register_packet_size == 0) | |
5817 | rsa->actual_register_packet_size = buf_len; | |
5818 | ||
5819 | /* If this is smaller than we guessed the 'g' packet would be, | |
5820 | update our records. A 'g' reply that doesn't include a register's | |
5821 | value implies either that the register is not available, or that | |
5822 | the 'p' packet must be used. */ | |
5823 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5824 | { |
74ca34ce DJ |
5825 | rsa->sizeof_g_packet = buf_len / 2; |
5826 | ||
4a22f64d | 5827 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5828 | { |
74ca34ce DJ |
5829 | if (rsa->regs[i].pnum == -1) |
5830 | continue; | |
5831 | ||
5832 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5833 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5834 | else |
74ca34ce | 5835 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5836 | } |
74ca34ce | 5837 | } |
b323314b | 5838 | |
74ca34ce | 5839 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5840 | |
5841 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5842 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5843 | |
c906108c SS |
5844 | /* Reply describes registers byte by byte, each byte encoded as two |
5845 | hex characters. Suck them all up, then supply them to the | |
5846 | register cacheing/storage mechanism. */ | |
5847 | ||
74ca34ce | 5848 | p = rs->buf; |
ea9c271d | 5849 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5850 | { |
74ca34ce DJ |
5851 | if (p[0] == 0 || p[1] == 0) |
5852 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5853 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5854 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5855 | |
c906108c | 5856 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5857 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5858 | else |
5859 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5860 | p += 2; | |
5861 | } | |
5862 | ||
a744cf53 MS |
5863 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5864 | { | |
5865 | struct packet_reg *r = &rsa->regs[i]; | |
5866 | ||
5867 | if (r->in_g_packet) | |
5868 | { | |
5869 | if (r->offset * 2 >= strlen (rs->buf)) | |
5870 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5871 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5872 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
5873 | else if (rs->buf[r->offset * 2] == 'x') |
5874 | { | |
5875 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5876 | /* The register isn't available, mark it as such (at | |
5877 | the same time setting the value to zero). */ | |
5878 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5879 | } | |
5880 | else | |
5881 | regcache_raw_supply (regcache, r->regnum, | |
5882 | regs + r->offset); | |
5883 | } | |
5884 | } | |
c906108c SS |
5885 | } |
5886 | ||
29709017 | 5887 | static void |
56be3814 | 5888 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5889 | { |
5890 | send_g_packet (); | |
56be3814 | 5891 | process_g_packet (regcache); |
29709017 DJ |
5892 | } |
5893 | ||
e6e4e701 PA |
5894 | /* Make the remote selected traceframe match GDB's selected |
5895 | traceframe. */ | |
5896 | ||
5897 | static void | |
5898 | set_remote_traceframe (void) | |
5899 | { | |
5900 | int newnum; | |
5901 | ||
5902 | if (remote_traceframe_number == get_traceframe_number ()) | |
5903 | return; | |
5904 | ||
5905 | /* Avoid recursion, remote_trace_find calls us again. */ | |
5906 | remote_traceframe_number = get_traceframe_number (); | |
5907 | ||
5908 | newnum = target_trace_find (tfind_number, | |
5909 | get_traceframe_number (), 0, 0, NULL); | |
5910 | ||
5911 | /* Should not happen. If it does, all bets are off. */ | |
5912 | if (newnum != get_traceframe_number ()) | |
5913 | warning (_("could not set remote traceframe")); | |
5914 | } | |
5915 | ||
74ca34ce | 5916 | static void |
28439f5e PA |
5917 | remote_fetch_registers (struct target_ops *ops, |
5918 | struct regcache *regcache, int regnum) | |
74ca34ce | 5919 | { |
74ca34ce DJ |
5920 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5921 | int i; | |
5922 | ||
e6e4e701 | 5923 | set_remote_traceframe (); |
79d7f229 | 5924 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5925 | |
5926 | if (regnum >= 0) | |
5927 | { | |
5928 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5929 | |
74ca34ce DJ |
5930 | gdb_assert (reg != NULL); |
5931 | ||
5932 | /* If this register might be in the 'g' packet, try that first - | |
5933 | we are likely to read more than one register. If this is the | |
5934 | first 'g' packet, we might be overly optimistic about its | |
5935 | contents, so fall back to 'p'. */ | |
5936 | if (reg->in_g_packet) | |
5937 | { | |
56be3814 | 5938 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5939 | if (reg->in_g_packet) |
5940 | return; | |
5941 | } | |
5942 | ||
56be3814 | 5943 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5944 | return; |
5945 | ||
5946 | /* This register is not available. */ | |
56be3814 | 5947 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5948 | |
5949 | return; | |
5950 | } | |
5951 | ||
56be3814 | 5952 | fetch_registers_using_g (regcache); |
74ca34ce | 5953 | |
4a22f64d | 5954 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5955 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5956 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5957 | { |
5958 | /* This register is not available. */ | |
56be3814 | 5959 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5960 | } |
5961 | } | |
5962 | ||
c906108c SS |
5963 | /* Prepare to store registers. Since we may send them all (using a |
5964 | 'G' request), we have to read out the ones we don't want to change | |
5965 | first. */ | |
5966 | ||
c5aa993b | 5967 | static void |
316f2060 | 5968 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5969 | { |
ea9c271d | 5970 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5971 | int i; |
cfd77fa1 | 5972 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5973 | |
c906108c | 5974 | /* Make sure the entire registers array is valid. */ |
444abaca | 5975 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5976 | { |
5977 | case PACKET_DISABLE: | |
5978 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5979 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5980 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5981 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5982 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
5983 | break; |
5984 | case PACKET_ENABLE: | |
5985 | break; | |
5986 | } | |
5987 | } | |
5988 | ||
ad10f812 | 5989 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 5990 | packet was not recognized. */ |
5a2468f5 JM |
5991 | |
5992 | static int | |
1f4437a4 MS |
5993 | store_register_using_P (const struct regcache *regcache, |
5994 | struct packet_reg *reg) | |
5a2468f5 | 5995 | { |
4a22f64d | 5996 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 5997 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 5998 | /* Try storing a single register. */ |
6d820c5c | 5999 | char *buf = rs->buf; |
cfd77fa1 | 6000 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6001 | char *p; |
5a2468f5 | 6002 | |
74ca34ce DJ |
6003 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6004 | return 0; | |
6005 | ||
6006 | if (reg->pnum == -1) | |
6007 | return 0; | |
6008 | ||
ea9c271d | 6009 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6010 | p = buf + strlen (buf); |
56be3814 | 6011 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6012 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6013 | putpkt (rs->buf); |
6014 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6015 | |
74ca34ce DJ |
6016 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6017 | { | |
6018 | case PACKET_OK: | |
6019 | return 1; | |
6020 | case PACKET_ERROR: | |
27a9c0bf MS |
6021 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6022 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6023 | case PACKET_UNKNOWN: |
6024 | return 0; | |
6025 | default: | |
6026 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6027 | } | |
c906108c SS |
6028 | } |
6029 | ||
23860348 MS |
6030 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6031 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6032 | |
6033 | static void | |
56be3814 | 6034 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6035 | { |
d01949b6 | 6036 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6037 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6038 | gdb_byte *regs; |
c906108c SS |
6039 | char *p; |
6040 | ||
193cb69f AC |
6041 | /* Extract all the registers in the regcache copying them into a |
6042 | local buffer. */ | |
6043 | { | |
b323314b | 6044 | int i; |
a744cf53 | 6045 | |
ea9c271d DJ |
6046 | regs = alloca (rsa->sizeof_g_packet); |
6047 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6048 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6049 | { |
ea9c271d | 6050 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6051 | |
b323314b | 6052 | if (r->in_g_packet) |
56be3814 | 6053 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6054 | } |
6055 | } | |
c906108c SS |
6056 | |
6057 | /* Command describes registers byte by byte, | |
6058 | each byte encoded as two hex characters. */ | |
6d820c5c | 6059 | p = rs->buf; |
193cb69f | 6060 | *p++ = 'G'; |
74ca34ce DJ |
6061 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6062 | updated. */ | |
6063 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6064 | putpkt (rs->buf); |
6065 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6066 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6067 | error (_("Could not write registers; remote failure reply '%s'"), |
6068 | rs->buf); | |
c906108c | 6069 | } |
74ca34ce DJ |
6070 | |
6071 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6072 | of the register cache buffer. FIXME: ignores errors. */ | |
6073 | ||
6074 | static void | |
28439f5e PA |
6075 | remote_store_registers (struct target_ops *ops, |
6076 | struct regcache *regcache, int regnum) | |
74ca34ce | 6077 | { |
74ca34ce DJ |
6078 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6079 | int i; | |
6080 | ||
e6e4e701 | 6081 | set_remote_traceframe (); |
79d7f229 | 6082 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6083 | |
6084 | if (regnum >= 0) | |
6085 | { | |
6086 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6087 | |
74ca34ce DJ |
6088 | gdb_assert (reg != NULL); |
6089 | ||
6090 | /* Always prefer to store registers using the 'P' packet if | |
6091 | possible; we often change only a small number of registers. | |
6092 | Sometimes we change a larger number; we'd need help from a | |
6093 | higher layer to know to use 'G'. */ | |
56be3814 | 6094 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6095 | return; |
6096 | ||
6097 | /* For now, don't complain if we have no way to write the | |
6098 | register. GDB loses track of unavailable registers too | |
6099 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6100 | any way to read the register, either... */ |
74ca34ce DJ |
6101 | if (!reg->in_g_packet) |
6102 | return; | |
6103 | ||
56be3814 | 6104 | store_registers_using_G (regcache); |
74ca34ce DJ |
6105 | return; |
6106 | } | |
6107 | ||
56be3814 | 6108 | store_registers_using_G (regcache); |
74ca34ce | 6109 | |
4a22f64d | 6110 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6111 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6112 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6113 | /* See above for why we do not issue an error here. */ |
6114 | continue; | |
6115 | } | |
c906108c SS |
6116 | \f |
6117 | ||
6118 | /* Return the number of hex digits in num. */ | |
6119 | ||
6120 | static int | |
fba45db2 | 6121 | hexnumlen (ULONGEST num) |
c906108c SS |
6122 | { |
6123 | int i; | |
6124 | ||
6125 | for (i = 0; num != 0; i++) | |
6126 | num >>= 4; | |
6127 | ||
6128 | return max (i, 1); | |
6129 | } | |
6130 | ||
2df3850c | 6131 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6132 | |
6133 | static int | |
fba45db2 | 6134 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6135 | { |
c906108c | 6136 | int len = hexnumlen (num); |
a744cf53 | 6137 | |
2df3850c JM |
6138 | return hexnumnstr (buf, num, len); |
6139 | } | |
6140 | ||
c906108c | 6141 | |
2df3850c | 6142 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6143 | |
2df3850c | 6144 | static int |
fba45db2 | 6145 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6146 | { |
6147 | int i; | |
6148 | ||
6149 | buf[width] = '\0'; | |
6150 | ||
6151 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6152 | { |
c5aa993b | 6153 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6154 | num >>= 4; |
6155 | } | |
6156 | ||
2df3850c | 6157 | return width; |
c906108c SS |
6158 | } |
6159 | ||
23860348 | 6160 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6161 | |
6162 | static CORE_ADDR | |
fba45db2 | 6163 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6164 | { |
911c95a5 | 6165 | int address_size = remote_address_size; |
a744cf53 | 6166 | |
911c95a5 UW |
6167 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6168 | if (!address_size) | |
1cf3db46 | 6169 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6170 | |
6171 | if (address_size > 0 | |
6172 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6173 | { |
6174 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6175 | in a ULONGEST variable. */ |
c906108c | 6176 | ULONGEST mask = 1; |
a744cf53 | 6177 | |
911c95a5 | 6178 | mask = (mask << address_size) - 1; |
c906108c SS |
6179 | addr &= mask; |
6180 | } | |
6181 | return addr; | |
6182 | } | |
6183 | ||
a31ea83d DJ |
6184 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6185 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6186 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6187 | (which may be more than *OUT_LEN due to escape characters). The | |
6188 | total number of bytes in the output buffer will be at most | |
6189 | OUT_MAXLEN. */ | |
6190 | ||
6191 | static int | |
6192 | remote_escape_output (const gdb_byte *buffer, int len, | |
6193 | gdb_byte *out_buf, int *out_len, | |
6194 | int out_maxlen) | |
6195 | { | |
6196 | int input_index, output_index; | |
6197 | ||
6198 | output_index = 0; | |
6199 | for (input_index = 0; input_index < len; input_index++) | |
6200 | { | |
6201 | gdb_byte b = buffer[input_index]; | |
6202 | ||
6203 | if (b == '$' || b == '#' || b == '}') | |
6204 | { | |
6205 | /* These must be escaped. */ | |
6206 | if (output_index + 2 > out_maxlen) | |
6207 | break; | |
6208 | out_buf[output_index++] = '}'; | |
6209 | out_buf[output_index++] = b ^ 0x20; | |
6210 | } | |
6211 | else | |
6212 | { | |
6213 | if (output_index + 1 > out_maxlen) | |
6214 | break; | |
6215 | out_buf[output_index++] = b; | |
6216 | } | |
6217 | } | |
6218 | ||
6219 | *out_len = input_index; | |
6220 | return output_index; | |
6221 | } | |
6222 | ||
0876f84a DJ |
6223 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6224 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6225 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6226 | ||
6227 | This function reverses remote_escape_output. It allows more | |
6228 | escaped characters than that function does, in particular because | |
6229 | '*' must be escaped to avoid the run-length encoding processing | |
6230 | in reading packets. */ | |
6231 | ||
6232 | static int | |
6233 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6234 | gdb_byte *out_buf, int out_maxlen) | |
6235 | { | |
6236 | int input_index, output_index; | |
6237 | int escaped; | |
6238 | ||
6239 | output_index = 0; | |
6240 | escaped = 0; | |
6241 | for (input_index = 0; input_index < len; input_index++) | |
6242 | { | |
6243 | gdb_byte b = buffer[input_index]; | |
6244 | ||
6245 | if (output_index + 1 > out_maxlen) | |
6246 | { | |
6247 | warning (_("Received too much data from remote target;" | |
6248 | " ignoring overflow.")); | |
6249 | return output_index; | |
6250 | } | |
6251 | ||
6252 | if (escaped) | |
6253 | { | |
6254 | out_buf[output_index++] = b ^ 0x20; | |
6255 | escaped = 0; | |
6256 | } | |
6257 | else if (b == '}') | |
6258 | escaped = 1; | |
6259 | else | |
6260 | out_buf[output_index++] = b; | |
6261 | } | |
6262 | ||
6263 | if (escaped) | |
6264 | error (_("Unmatched escape character in target response.")); | |
6265 | ||
6266 | return output_index; | |
6267 | } | |
6268 | ||
c906108c SS |
6269 | /* Determine whether the remote target supports binary downloading. |
6270 | This is accomplished by sending a no-op memory write of zero length | |
6271 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6272 | the whole packet, since many stubs strip the eighth bit and |
6273 | subsequently compute a wrong checksum, which causes real havoc with | |
6274 | remote_write_bytes. | |
7a292a7a | 6275 | |
96baa820 | 6276 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6277 | clean. In cases like this, the user should clear "remote |
23860348 | 6278 | X-packet". */ |
96baa820 | 6279 | |
c906108c | 6280 | static void |
fba45db2 | 6281 | check_binary_download (CORE_ADDR addr) |
c906108c | 6282 | { |
d01949b6 | 6283 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6284 | |
444abaca | 6285 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6286 | { |
96baa820 JM |
6287 | case PACKET_DISABLE: |
6288 | break; | |
6289 | case PACKET_ENABLE: | |
6290 | break; | |
6291 | case PACKET_SUPPORT_UNKNOWN: | |
6292 | { | |
96baa820 | 6293 | char *p; |
802188a7 | 6294 | |
2e9f7625 | 6295 | p = rs->buf; |
96baa820 JM |
6296 | *p++ = 'X'; |
6297 | p += hexnumstr (p, (ULONGEST) addr); | |
6298 | *p++ = ','; | |
6299 | p += hexnumstr (p, (ULONGEST) 0); | |
6300 | *p++ = ':'; | |
6301 | *p = '\0'; | |
802188a7 | 6302 | |
2e9f7625 | 6303 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6304 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6305 | |
2e9f7625 | 6306 | if (rs->buf[0] == '\0') |
96baa820 JM |
6307 | { |
6308 | if (remote_debug) | |
6309 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6310 | "binary downloading NOT " |
6311 | "supported by target\n"); | |
444abaca | 6312 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6313 | } |
6314 | else | |
6315 | { | |
6316 | if (remote_debug) | |
6317 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6318 | "binary downloading supported by target\n"); |
444abaca | 6319 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6320 | } |
6321 | break; | |
6322 | } | |
c906108c SS |
6323 | } |
6324 | } | |
6325 | ||
6326 | /* Write memory data directly to the remote machine. | |
6327 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6328 | HEADER is the starting part of the packet. |
c906108c SS |
6329 | MEMADDR is the address in the remote memory space. |
6330 | MYADDR is the address of the buffer in our space. | |
6331 | LEN is the number of bytes. | |
a76d924d DJ |
6332 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6333 | should send data as binary ('X'), or hex-encoded ('M'). | |
6334 | ||
6335 | The function creates packet of the form | |
6336 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6337 | ||
6338 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6339 | ||
6340 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6341 | are omitted. | |
6342 | ||
6343 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6344 | error. Only transfer a single packet. */ |
c906108c | 6345 | |
a76d924d DJ |
6346 | static int |
6347 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6348 | const gdb_byte *myaddr, int len, | |
6349 | char packet_format, int use_length) | |
c906108c | 6350 | { |
6d820c5c | 6351 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6352 | char *p; |
a76d924d DJ |
6353 | char *plen = NULL; |
6354 | int plenlen = 0; | |
917317f4 JM |
6355 | int todo; |
6356 | int nr_bytes; | |
a257b5bb | 6357 | int payload_size; |
6765f3e5 | 6358 | int payload_length; |
a76d924d DJ |
6359 | int header_length; |
6360 | ||
6361 | if (packet_format != 'X' && packet_format != 'M') | |
6362 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6363 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6364 | |
b2182ed2 DJ |
6365 | if (len <= 0) |
6366 | return 0; | |
6367 | ||
3de11b2e | 6368 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6369 | |
6d820c5c DJ |
6370 | /* The packet buffer will be large enough for the payload; |
6371 | get_memory_packet_size ensures this. */ | |
a76d924d | 6372 | rs->buf[0] = '\0'; |
c906108c | 6373 | |
a257b5bb | 6374 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6375 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6376 | ||
a76d924d DJ |
6377 | payload_size -= strlen ("$,:#NN"); |
6378 | if (!use_length) | |
0df8b418 | 6379 | /* The comma won't be used. */ |
a76d924d DJ |
6380 | payload_size += 1; |
6381 | header_length = strlen (header); | |
6382 | payload_size -= header_length; | |
3de11b2e | 6383 | payload_size -= hexnumlen (memaddr); |
c906108c | 6384 | |
a76d924d | 6385 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6386 | |
a76d924d DJ |
6387 | strcat (rs->buf, header); |
6388 | p = rs->buf + strlen (header); | |
6389 | ||
6390 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6391 | if (packet_format == 'X') | |
c906108c | 6392 | { |
23860348 | 6393 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6394 | todo = min (len, payload_size); |
a76d924d DJ |
6395 | if (use_length) |
6396 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6397 | todo = min (todo, payload_size); |
a76d924d DJ |
6398 | } |
6399 | else | |
6400 | { | |
23860348 | 6401 | /* Num bytes that will fit. */ |
a257b5bb | 6402 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6403 | if (use_length) |
6404 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6405 | todo = min (todo, payload_size / 2); |
917317f4 | 6406 | } |
a76d924d | 6407 | |
3de11b2e NS |
6408 | if (todo <= 0) |
6409 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6410 | _("minimum packet size too small to write data")); |
802188a7 | 6411 | |
6765f3e5 DJ |
6412 | /* If we already need another packet, then try to align the end |
6413 | of this packet to a useful boundary. */ | |
6414 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6415 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6416 | ||
a257b5bb | 6417 | /* Append "<memaddr>". */ |
917317f4 JM |
6418 | memaddr = remote_address_masked (memaddr); |
6419 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6420 | |
a76d924d DJ |
6421 | if (use_length) |
6422 | { | |
6423 | /* Append ",". */ | |
6424 | *p++ = ','; | |
802188a7 | 6425 | |
a76d924d DJ |
6426 | /* Append <len>. Retain the location/size of <len>. It may need to |
6427 | be adjusted once the packet body has been created. */ | |
6428 | plen = p; | |
6429 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6430 | p += plenlen; | |
6431 | } | |
a257b5bb AC |
6432 | |
6433 | /* Append ":". */ | |
917317f4 JM |
6434 | *p++ = ':'; |
6435 | *p = '\0'; | |
802188a7 | 6436 | |
a257b5bb | 6437 | /* Append the packet body. */ |
a76d924d | 6438 | if (packet_format == 'X') |
917317f4 | 6439 | { |
917317f4 JM |
6440 | /* Binary mode. Send target system values byte by byte, in |
6441 | increasing byte addresses. Only escape certain critical | |
6442 | characters. */ | |
6765f3e5 DJ |
6443 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6444 | payload_size); | |
6445 | ||
6446 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6447 | a second try to keep the end of the packet aligned. Don't do |
6448 | this if the packet is tiny. */ | |
6449 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6450 | { |
6451 | int new_nr_bytes; | |
6452 | ||
6453 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6454 | - memaddr); | |
6455 | if (new_nr_bytes != nr_bytes) | |
6456 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6457 | p, &nr_bytes, | |
6458 | payload_size); | |
6459 | } | |
6460 | ||
6461 | p += payload_length; | |
a76d924d | 6462 | if (use_length && nr_bytes < todo) |
c906108c | 6463 | { |
802188a7 | 6464 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6465 | and we have actually sent fewer bytes than planned. |
6466 | Fix-up the length field of the packet. Use the same | |
6467 | number of characters as before. */ | |
917317f4 JM |
6468 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6469 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6470 | } |
a76d924d DJ |
6471 | } |
6472 | else | |
6473 | { | |
917317f4 JM |
6474 | /* Normal mode: Send target system values byte by byte, in |
6475 | increasing byte addresses. Each byte is encoded as a two hex | |
6476 | value. */ | |
2644f393 | 6477 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6478 | p += 2 * nr_bytes; |
c906108c | 6479 | } |
802188a7 | 6480 | |
2e9f7625 | 6481 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6482 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6483 | |
2e9f7625 | 6484 | if (rs->buf[0] == 'E') |
917317f4 JM |
6485 | { |
6486 | /* There is no correspondance between what the remote protocol | |
6487 | uses for errors and errno codes. We would like a cleaner way | |
6488 | of representing errors (big enough to include errno codes, | |
6489 | bfd_error codes, and others). But for now just return EIO. */ | |
6490 | errno = EIO; | |
6491 | return 0; | |
6492 | } | |
802188a7 | 6493 | |
23860348 MS |
6494 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6495 | fewer bytes than we'd planned. */ | |
917317f4 | 6496 | return nr_bytes; |
c906108c SS |
6497 | } |
6498 | ||
a76d924d DJ |
6499 | /* Write memory data directly to the remote machine. |
6500 | This does not inform 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 (setting errno) for | |
6506 | error. Only transfer a single packet. */ | |
6507 | ||
f7605bc2 | 6508 | static int |
a76d924d DJ |
6509 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
6510 | { | |
6511 | char *packet_format = 0; | |
6512 | ||
6513 | /* Check whether the target supports binary download. */ | |
6514 | check_binary_download (memaddr); | |
6515 | ||
6516 | switch (remote_protocol_packets[PACKET_X].support) | |
6517 | { | |
6518 | case PACKET_ENABLE: | |
6519 | packet_format = "X"; | |
6520 | break; | |
6521 | case PACKET_DISABLE: | |
6522 | packet_format = "M"; | |
6523 | break; | |
6524 | case PACKET_SUPPORT_UNKNOWN: | |
6525 | internal_error (__FILE__, __LINE__, | |
6526 | _("remote_write_bytes: bad internal state")); | |
6527 | default: | |
6528 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6529 | } | |
6530 | ||
6531 | return remote_write_bytes_aux (packet_format, | |
6532 | memaddr, myaddr, len, packet_format[0], 1); | |
6533 | } | |
6534 | ||
c906108c SS |
6535 | /* Read memory data directly from the remote machine. |
6536 | This does not use the data cache; the data cache uses this. | |
6537 | MEMADDR is the address in the remote memory space. | |
6538 | MYADDR is the address of the buffer in our space. | |
6539 | LEN is the number of bytes. | |
6540 | ||
6541 | Returns number of bytes transferred, or 0 for error. */ | |
6542 | ||
f7605bc2 | 6543 | static int |
cfd77fa1 | 6544 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6545 | { |
6d820c5c | 6546 | struct remote_state *rs = get_remote_state (); |
23860348 | 6547 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6548 | char *p; |
6549 | int todo; | |
6550 | int i; | |
c906108c | 6551 | |
b2182ed2 DJ |
6552 | if (len <= 0) |
6553 | return 0; | |
6554 | ||
11cf8741 | 6555 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6556 | /* The packet buffer will be large enough for the payload; |
6557 | get_memory_packet_size ensures this. */ | |
c906108c | 6558 | |
f7605bc2 PA |
6559 | /* Number if bytes that will fit. */ |
6560 | todo = min (len, max_buf_size / 2); | |
c906108c | 6561 | |
f7605bc2 PA |
6562 | /* Construct "m"<memaddr>","<len>". */ |
6563 | memaddr = remote_address_masked (memaddr); | |
6564 | p = rs->buf; | |
6565 | *p++ = 'm'; | |
6566 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6567 | *p++ = ','; | |
6568 | p += hexnumstr (p, (ULONGEST) todo); | |
6569 | *p = '\0'; | |
6570 | putpkt (rs->buf); | |
6571 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6572 | if (rs->buf[0] == 'E' | |
6573 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6574 | && rs->buf[3] == '\0') | |
6575 | { | |
6576 | /* There is no correspondance between what the remote protocol | |
6577 | uses for errors and errno codes. We would like a cleaner way | |
6578 | of representing errors (big enough to include errno codes, | |
6579 | bfd_error codes, and others). But for now just return | |
6580 | EIO. */ | |
6581 | errno = EIO; | |
6582 | return 0; | |
c906108c | 6583 | } |
f7605bc2 PA |
6584 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6585 | characters. */ | |
6586 | p = rs->buf; | |
6587 | i = hex2bin (p, myaddr, todo); | |
6588 | /* Return what we have. Let higher layers handle partial reads. */ | |
6589 | return i; | |
c906108c | 6590 | } |
74531fed PA |
6591 | \f |
6592 | ||
6593 | /* Remote notification handler. */ | |
6594 | ||
6595 | static void | |
6596 | handle_notification (char *buf, size_t length) | |
6597 | { | |
6598 | if (strncmp (buf, "Stop:", 5) == 0) | |
6599 | { | |
6600 | if (pending_stop_reply) | |
0723dbf5 PA |
6601 | { |
6602 | /* We've already parsed the in-flight stop-reply, but the | |
6603 | stub for some reason thought we didn't, possibly due to | |
6604 | timeout on its side. Just ignore it. */ | |
6605 | if (remote_debug) | |
6606 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6607 | } | |
74531fed PA |
6608 | else |
6609 | { | |
6610 | struct cleanup *old_chain; | |
6611 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6612 | |
74531fed PA |
6613 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6614 | ||
6615 | remote_parse_stop_reply (buf + 5, reply); | |
6616 | ||
6617 | discard_cleanups (old_chain); | |
6618 | ||
6619 | /* Be careful to only set it after parsing, since an error | |
6620 | may be thrown then. */ | |
6621 | pending_stop_reply = reply; | |
6622 | ||
6623 | /* Notify the event loop there's a stop reply to acknowledge | |
6624 | and that there may be more events to fetch. */ | |
6625 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6626 | |
6627 | if (remote_debug) | |
6628 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6629 | } |
6630 | } | |
6631 | else | |
6632 | /* We ignore notifications we don't recognize, for compatibility | |
6633 | with newer stubs. */ | |
6634 | ; | |
6635 | } | |
6636 | ||
c906108c SS |
6637 | \f |
6638 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6639 | transferring to or from debugger address BUFFER. Write to inferior |
6640 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6641 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6642 | |
c906108c | 6643 | static int |
961cb7b5 | 6644 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6645 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6646 | struct target_ops *target) |
c906108c | 6647 | { |
4930751a C |
6648 | int res; |
6649 | ||
e6e4e701 | 6650 | set_remote_traceframe (); |
82f73884 PA |
6651 | set_general_thread (inferior_ptid); |
6652 | ||
4930751a | 6653 | if (should_write) |
b2182ed2 | 6654 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6655 | else |
b2182ed2 | 6656 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6657 | |
6658 | return res; | |
c906108c SS |
6659 | } |
6660 | ||
a76d924d DJ |
6661 | /* Sends a packet with content determined by the printf format string |
6662 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6663 | whether the packet was a success, a failure, or unknown. */ | |
6664 | ||
2c0b251b | 6665 | static enum packet_result |
a76d924d DJ |
6666 | remote_send_printf (const char *format, ...) |
6667 | { | |
6668 | struct remote_state *rs = get_remote_state (); | |
6669 | int max_size = get_remote_packet_size (); | |
a76d924d | 6670 | va_list ap; |
a744cf53 | 6671 | |
a76d924d DJ |
6672 | va_start (ap, format); |
6673 | ||
6674 | rs->buf[0] = '\0'; | |
6675 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6676 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6677 | |
6678 | if (putpkt (rs->buf) < 0) | |
6679 | error (_("Communication problem with target.")); | |
6680 | ||
6681 | rs->buf[0] = '\0'; | |
6682 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6683 | ||
6684 | return packet_check_result (rs->buf); | |
6685 | } | |
6686 | ||
6687 | static void | |
6688 | restore_remote_timeout (void *p) | |
6689 | { | |
6690 | int value = *(int *)p; | |
a744cf53 | 6691 | |
a76d924d DJ |
6692 | remote_timeout = value; |
6693 | } | |
6694 | ||
6695 | /* Flash writing can take quite some time. We'll set | |
6696 | effectively infinite timeout for flash operations. | |
6697 | In future, we'll need to decide on a better approach. */ | |
6698 | static const int remote_flash_timeout = 1000; | |
6699 | ||
6700 | static void | |
6701 | remote_flash_erase (struct target_ops *ops, | |
6702 | ULONGEST address, LONGEST length) | |
6703 | { | |
5af949e3 | 6704 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6705 | int saved_remote_timeout = remote_timeout; |
6706 | enum packet_result ret; | |
a76d924d DJ |
6707 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6708 | &saved_remote_timeout); | |
a744cf53 | 6709 | |
a76d924d DJ |
6710 | remote_timeout = remote_flash_timeout; |
6711 | ||
6712 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6713 | phex (address, addr_size), |
a76d924d DJ |
6714 | phex (length, 4)); |
6715 | switch (ret) | |
6716 | { | |
6717 | case PACKET_UNKNOWN: | |
6718 | error (_("Remote target does not support flash erase")); | |
6719 | case PACKET_ERROR: | |
6720 | error (_("Error erasing flash with vFlashErase packet")); | |
6721 | default: | |
6722 | break; | |
6723 | } | |
6724 | ||
6725 | do_cleanups (back_to); | |
6726 | } | |
6727 | ||
6728 | static LONGEST | |
6729 | remote_flash_write (struct target_ops *ops, | |
6730 | ULONGEST address, LONGEST length, | |
6731 | const gdb_byte *data) | |
6732 | { | |
6733 | int saved_remote_timeout = remote_timeout; | |
6734 | int ret; | |
6735 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6736 | &saved_remote_timeout); | |
6737 | ||
6738 | remote_timeout = remote_flash_timeout; | |
6739 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6740 | do_cleanups (back_to); | |
6741 | ||
6742 | return ret; | |
6743 | } | |
6744 | ||
6745 | static void | |
6746 | remote_flash_done (struct target_ops *ops) | |
6747 | { | |
6748 | int saved_remote_timeout = remote_timeout; | |
6749 | int ret; | |
6750 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6751 | &saved_remote_timeout); | |
6752 | ||
6753 | remote_timeout = remote_flash_timeout; | |
6754 | ret = remote_send_printf ("vFlashDone"); | |
6755 | do_cleanups (back_to); | |
6756 | ||
6757 | switch (ret) | |
6758 | { | |
6759 | case PACKET_UNKNOWN: | |
6760 | error (_("Remote target does not support vFlashDone")); | |
6761 | case PACKET_ERROR: | |
6762 | error (_("Error finishing flash operation")); | |
6763 | default: | |
6764 | break; | |
6765 | } | |
6766 | } | |
6767 | ||
c906108c | 6768 | static void |
fba45db2 | 6769 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6770 | { |
6771 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6772 | } | |
6773 | \f | |
6774 | /* Stuff for dealing with the packets which are part of this protocol. | |
6775 | See comment at top of file for details. */ | |
6776 | ||
0876f84a | 6777 | /* Read a single character from the remote end. */ |
c906108c SS |
6778 | |
6779 | static int | |
fba45db2 | 6780 | readchar (int timeout) |
c906108c SS |
6781 | { |
6782 | int ch; | |
6783 | ||
2cd58942 | 6784 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6785 | |
2acceee2 | 6786 | if (ch >= 0) |
0876f84a | 6787 | return ch; |
2acceee2 JM |
6788 | |
6789 | switch ((enum serial_rc) ch) | |
c906108c SS |
6790 | { |
6791 | case SERIAL_EOF: | |
ce5ce7ed | 6792 | pop_target (); |
8a3fe4f8 | 6793 | error (_("Remote connection closed")); |
2acceee2 | 6794 | /* no return */ |
c906108c | 6795 | case SERIAL_ERROR: |
4ac8c4da | 6796 | pop_target (); |
3e43a32a MS |
6797 | perror_with_name (_("Remote communication error. " |
6798 | "Target disconnected.")); | |
2acceee2 | 6799 | /* no return */ |
c906108c | 6800 | case SERIAL_TIMEOUT: |
2acceee2 | 6801 | break; |
c906108c | 6802 | } |
2acceee2 | 6803 | return ch; |
c906108c SS |
6804 | } |
6805 | ||
6d820c5c DJ |
6806 | /* Send the command in *BUF to the remote machine, and read the reply |
6807 | into *BUF. Report an error if we get an error reply. Resize | |
6808 | *BUF using xrealloc if necessary to hold the result, and update | |
6809 | *SIZEOF_BUF. */ | |
c906108c SS |
6810 | |
6811 | static void | |
6d820c5c DJ |
6812 | remote_send (char **buf, |
6813 | long *sizeof_buf) | |
c906108c | 6814 | { |
6d820c5c | 6815 | putpkt (*buf); |
c2d11a7d | 6816 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6817 | |
6d820c5c DJ |
6818 | if ((*buf)[0] == 'E') |
6819 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6820 | } |
6821 | ||
6e5abd65 PA |
6822 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6823 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6824 | etc. The caller is responsible for releasing the returned | |
6825 | memory. */ | |
6826 | ||
6827 | static char * | |
6828 | escape_buffer (const char *buf, int n) | |
6829 | { | |
6830 | struct cleanup *old_chain; | |
6831 | struct ui_file *stb; | |
6832 | char *str; | |
6e5abd65 PA |
6833 | |
6834 | stb = mem_fileopen (); | |
6835 | old_chain = make_cleanup_ui_file_delete (stb); | |
6836 | ||
6837 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6838 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6839 | do_cleanups (old_chain); |
6840 | return str; | |
6841 | } | |
6842 | ||
c906108c SS |
6843 | /* Display a null-terminated packet on stdout, for debugging, using C |
6844 | string notation. */ | |
6845 | ||
6846 | static void | |
fba45db2 | 6847 | print_packet (char *buf) |
c906108c SS |
6848 | { |
6849 | puts_filtered ("\""); | |
43e526b9 | 6850 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6851 | puts_filtered ("\""); |
6852 | } | |
6853 | ||
6854 | int | |
fba45db2 | 6855 | putpkt (char *buf) |
c906108c SS |
6856 | { |
6857 | return putpkt_binary (buf, strlen (buf)); | |
6858 | } | |
6859 | ||
6860 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6861 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6862 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6863 | and for a possible /0 if we are debugging (remote_debug) and want |
6864 | to print the sent packet as a string. */ | |
c906108c SS |
6865 | |
6866 | static int | |
fba45db2 | 6867 | putpkt_binary (char *buf, int cnt) |
c906108c | 6868 | { |
2d717e4f | 6869 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6870 | int i; |
6871 | unsigned char csum = 0; | |
11cf8741 | 6872 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6873 | |
c906108c SS |
6874 | int ch; |
6875 | int tcount = 0; | |
6876 | char *p; | |
6877 | ||
e24a49d8 PA |
6878 | /* Catch cases like trying to read memory or listing threads while |
6879 | we're waiting for a stop reply. The remote server wouldn't be | |
6880 | ready to handle this request, so we'd hang and timeout. We don't | |
6881 | have to worry about this in synchronous mode, because in that | |
6882 | case it's not possible to issue a command while the target is | |
74531fed PA |
6883 | running. This is not a problem in non-stop mode, because in that |
6884 | case, the stub is always ready to process serial input. */ | |
6885 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6886 | error (_("Cannot execute this command while the target is running.")); |
6887 | ||
2d717e4f DJ |
6888 | /* We're sending out a new packet. Make sure we don't look at a |
6889 | stale cached response. */ | |
6890 | rs->cached_wait_status = 0; | |
6891 | ||
c906108c SS |
6892 | /* Copy the packet into buffer BUF2, encapsulating it |
6893 | and giving it a checksum. */ | |
6894 | ||
c906108c SS |
6895 | p = buf2; |
6896 | *p++ = '$'; | |
6897 | ||
6898 | for (i = 0; i < cnt; i++) | |
6899 | { | |
6900 | csum += buf[i]; | |
6901 | *p++ = buf[i]; | |
6902 | } | |
6903 | *p++ = '#'; | |
6904 | *p++ = tohex ((csum >> 4) & 0xf); | |
6905 | *p++ = tohex (csum & 0xf); | |
6906 | ||
6907 | /* Send it over and over until we get a positive ack. */ | |
6908 | ||
6909 | while (1) | |
6910 | { | |
6911 | int started_error_output = 0; | |
6912 | ||
6913 | if (remote_debug) | |
6914 | { | |
6e5abd65 PA |
6915 | struct cleanup *old_chain; |
6916 | char *str; | |
6917 | ||
c906108c | 6918 | *p = '\0'; |
6e5abd65 PA |
6919 | str = escape_buffer (buf2, p - buf2); |
6920 | old_chain = make_cleanup (xfree, str); | |
6921 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6922 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6923 | do_cleanups (old_chain); |
c906108c | 6924 | } |
2cd58942 | 6925 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6926 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6927 | |
a6f3e723 SL |
6928 | /* If this is a no acks version of the remote protocol, send the |
6929 | packet and move on. */ | |
6930 | if (rs->noack_mode) | |
6931 | break; | |
6932 | ||
74531fed PA |
6933 | /* Read until either a timeout occurs (-2) or '+' is read. |
6934 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6935 | while (1) |
6936 | { | |
6937 | ch = readchar (remote_timeout); | |
6938 | ||
c5aa993b | 6939 | if (remote_debug) |
c906108c SS |
6940 | { |
6941 | switch (ch) | |
6942 | { | |
6943 | case '+': | |
1216fa2c | 6944 | case '-': |
c906108c SS |
6945 | case SERIAL_TIMEOUT: |
6946 | case '$': | |
74531fed | 6947 | case '%': |
c906108c SS |
6948 | if (started_error_output) |
6949 | { | |
6950 | putchar_unfiltered ('\n'); | |
6951 | started_error_output = 0; | |
6952 | } | |
6953 | } | |
6954 | } | |
6955 | ||
6956 | switch (ch) | |
6957 | { | |
6958 | case '+': | |
6959 | if (remote_debug) | |
0f71a2f6 | 6960 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6961 | return 1; |
1216fa2c AC |
6962 | case '-': |
6963 | if (remote_debug) | |
6964 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 6965 | /* FALLTHROUGH */ |
c906108c | 6966 | case SERIAL_TIMEOUT: |
c5aa993b | 6967 | tcount++; |
c906108c SS |
6968 | if (tcount > 3) |
6969 | return 0; | |
23860348 | 6970 | break; /* Retransmit buffer. */ |
c906108c SS |
6971 | case '$': |
6972 | { | |
40e3f985 | 6973 | if (remote_debug) |
2bc416ba | 6974 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6975 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6976 | /* It's probably an old response sent because an ACK |
6977 | was lost. Gobble up the packet and ack it so it | |
6978 | doesn't get retransmitted when we resend this | |
6979 | packet. */ | |
6d820c5c | 6980 | skip_frame (); |
d6f7abdf | 6981 | serial_write (remote_desc, "+", 1); |
23860348 | 6982 | continue; /* Now, go look for +. */ |
c906108c | 6983 | } |
74531fed PA |
6984 | |
6985 | case '%': | |
6986 | { | |
6987 | int val; | |
6988 | ||
6989 | /* If we got a notification, handle it, and go back to looking | |
6990 | for an ack. */ | |
6991 | /* We've found the start of a notification. Now | |
6992 | collect the data. */ | |
6993 | val = read_frame (&rs->buf, &rs->buf_size); | |
6994 | if (val >= 0) | |
6995 | { | |
6996 | if (remote_debug) | |
6997 | { | |
6e5abd65 PA |
6998 | struct cleanup *old_chain; |
6999 | char *str; | |
7000 | ||
7001 | str = escape_buffer (rs->buf, val); | |
7002 | old_chain = make_cleanup (xfree, str); | |
7003 | fprintf_unfiltered (gdb_stdlog, | |
7004 | " Notification received: %s\n", | |
7005 | str); | |
7006 | do_cleanups (old_chain); | |
74531fed PA |
7007 | } |
7008 | handle_notification (rs->buf, val); | |
7009 | /* We're in sync now, rewait for the ack. */ | |
7010 | tcount = 0; | |
7011 | } | |
7012 | else | |
7013 | { | |
7014 | if (remote_debug) | |
7015 | { | |
7016 | if (!started_error_output) | |
7017 | { | |
7018 | started_error_output = 1; | |
7019 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7020 | } | |
7021 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7022 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7023 | } | |
7024 | } | |
7025 | continue; | |
7026 | } | |
7027 | /* fall-through */ | |
c906108c SS |
7028 | default: |
7029 | if (remote_debug) | |
7030 | { | |
7031 | if (!started_error_output) | |
7032 | { | |
7033 | started_error_output = 1; | |
0f71a2f6 | 7034 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7035 | } |
0f71a2f6 | 7036 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7037 | } |
7038 | continue; | |
7039 | } | |
23860348 | 7040 | break; /* Here to retransmit. */ |
c906108c SS |
7041 | } |
7042 | ||
7043 | #if 0 | |
7044 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7045 | able to get out next time we call QUIT, without anything as |
7046 | violent as interrupt_query. If we want to provide a way out of | |
7047 | here without getting to the next QUIT, it should be based on | |
7048 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7049 | if (quit_flag) |
7050 | { | |
7051 | quit_flag = 0; | |
7052 | interrupt_query (); | |
7053 | } | |
7054 | #endif | |
7055 | } | |
a6f3e723 | 7056 | return 0; |
c906108c SS |
7057 | } |
7058 | ||
6d820c5c DJ |
7059 | /* Come here after finding the start of a frame when we expected an |
7060 | ack. Do our best to discard the rest of this packet. */ | |
7061 | ||
7062 | static void | |
7063 | skip_frame (void) | |
7064 | { | |
7065 | int c; | |
7066 | ||
7067 | while (1) | |
7068 | { | |
7069 | c = readchar (remote_timeout); | |
7070 | switch (c) | |
7071 | { | |
7072 | case SERIAL_TIMEOUT: | |
7073 | /* Nothing we can do. */ | |
7074 | return; | |
7075 | case '#': | |
7076 | /* Discard the two bytes of checksum and stop. */ | |
7077 | c = readchar (remote_timeout); | |
7078 | if (c >= 0) | |
7079 | c = readchar (remote_timeout); | |
7080 | ||
7081 | return; | |
7082 | case '*': /* Run length encoding. */ | |
7083 | /* Discard the repeat count. */ | |
7084 | c = readchar (remote_timeout); | |
7085 | if (c < 0) | |
7086 | return; | |
7087 | break; | |
7088 | default: | |
7089 | /* A regular character. */ | |
7090 | break; | |
7091 | } | |
7092 | } | |
7093 | } | |
7094 | ||
c906108c | 7095 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7096 | into *BUF, verifying the checksum, length, and handling run-length |
7097 | compression. NUL terminate the buffer. If there is not enough room, | |
7098 | expand *BUF using xrealloc. | |
c906108c | 7099 | |
c2d11a7d JM |
7100 | Returns -1 on error, number of characters in buffer (ignoring the |
7101 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7102 | SERIAL status indications). */ |
c2d11a7d JM |
7103 | |
7104 | static long | |
6d820c5c DJ |
7105 | read_frame (char **buf_p, |
7106 | long *sizeof_buf) | |
c906108c SS |
7107 | { |
7108 | unsigned char csum; | |
c2d11a7d | 7109 | long bc; |
c906108c | 7110 | int c; |
6d820c5c | 7111 | char *buf = *buf_p; |
a6f3e723 | 7112 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7113 | |
7114 | csum = 0; | |
c2d11a7d | 7115 | bc = 0; |
c906108c SS |
7116 | |
7117 | while (1) | |
7118 | { | |
7119 | c = readchar (remote_timeout); | |
c906108c SS |
7120 | switch (c) |
7121 | { | |
7122 | case SERIAL_TIMEOUT: | |
7123 | if (remote_debug) | |
0f71a2f6 | 7124 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7125 | return -1; |
c906108c SS |
7126 | case '$': |
7127 | if (remote_debug) | |
0f71a2f6 JM |
7128 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7129 | gdb_stdlog); | |
23860348 | 7130 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7131 | case '#': |
7132 | { | |
7133 | unsigned char pktcsum; | |
e1b09194 AC |
7134 | int check_0 = 0; |
7135 | int check_1 = 0; | |
c906108c | 7136 | |
c2d11a7d | 7137 | buf[bc] = '\0'; |
c906108c | 7138 | |
e1b09194 AC |
7139 | check_0 = readchar (remote_timeout); |
7140 | if (check_0 >= 0) | |
7141 | check_1 = readchar (remote_timeout); | |
802188a7 | 7142 | |
e1b09194 AC |
7143 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7144 | { | |
7145 | if (remote_debug) | |
2bc416ba | 7146 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7147 | gdb_stdlog); |
e1b09194 AC |
7148 | return -1; |
7149 | } | |
7150 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7151 | { |
7152 | if (remote_debug) | |
2bc416ba | 7153 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7154 | gdb_stdlog); |
40e3f985 FN |
7155 | return -1; |
7156 | } | |
c906108c | 7157 | |
a6f3e723 SL |
7158 | /* Don't recompute the checksum; with no ack packets we |
7159 | don't have any way to indicate a packet retransmission | |
7160 | is necessary. */ | |
7161 | if (rs->noack_mode) | |
7162 | return bc; | |
7163 | ||
e1b09194 | 7164 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7165 | if (csum == pktcsum) |
c2d11a7d | 7166 | return bc; |
c906108c | 7167 | |
c5aa993b | 7168 | if (remote_debug) |
c906108c | 7169 | { |
6e5abd65 PA |
7170 | struct cleanup *old_chain; |
7171 | char *str; | |
7172 | ||
7173 | str = escape_buffer (buf, bc); | |
7174 | old_chain = make_cleanup (xfree, str); | |
7175 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7176 | "Bad checksum, sentsum=0x%x, " |
7177 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7178 | pktcsum, csum, str); |
7179 | do_cleanups (old_chain); | |
c906108c | 7180 | } |
c2d11a7d | 7181 | /* Number of characters in buffer ignoring trailing |
23860348 | 7182 | NULL. */ |
c2d11a7d | 7183 | return -1; |
c906108c | 7184 | } |
23860348 | 7185 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7186 | { |
7187 | int repeat; | |
c906108c | 7188 | |
a744cf53 | 7189 | csum += c; |
b4501125 AC |
7190 | c = readchar (remote_timeout); |
7191 | csum += c; | |
23860348 | 7192 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7193 | |
23860348 | 7194 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7195 | |
6d820c5c | 7196 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7197 | { |
6d820c5c DJ |
7198 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7199 | { | |
7200 | /* Make some more room in the buffer. */ | |
7201 | *sizeof_buf += repeat; | |
7202 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7203 | buf = *buf_p; | |
7204 | } | |
7205 | ||
c2d11a7d JM |
7206 | memset (&buf[bc], buf[bc - 1], repeat); |
7207 | bc += repeat; | |
c2c6d25f JM |
7208 | continue; |
7209 | } | |
7210 | ||
c2d11a7d | 7211 | buf[bc] = '\0'; |
6d820c5c | 7212 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7213 | return -1; |
c2c6d25f | 7214 | } |
c906108c | 7215 | default: |
6d820c5c | 7216 | if (bc >= *sizeof_buf - 1) |
c906108c | 7217 | { |
6d820c5c DJ |
7218 | /* Make some more room in the buffer. */ |
7219 | *sizeof_buf *= 2; | |
7220 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7221 | buf = *buf_p; | |
c906108c SS |
7222 | } |
7223 | ||
6d820c5c DJ |
7224 | buf[bc++] = c; |
7225 | csum += c; | |
7226 | continue; | |
c906108c SS |
7227 | } |
7228 | } | |
7229 | } | |
7230 | ||
7231 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7232 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7233 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7234 | rather than timing out; this is used (in synchronous mode) to wait | |
7235 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7236 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7237 | don't have to change all the calls to getpkt to deal with the | |
7238 | return value, because at the moment I don't know what the right | |
23860348 | 7239 | thing to do it for those. */ |
c906108c | 7240 | void |
6d820c5c DJ |
7241 | getpkt (char **buf, |
7242 | long *sizeof_buf, | |
c2d11a7d | 7243 | int forever) |
d9fcf2fb JM |
7244 | { |
7245 | int timed_out; | |
7246 | ||
7247 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7248 | } | |
7249 | ||
7250 | ||
7251 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7252 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7253 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7254 | rather than timing out; this is used (in synchronous mode) to wait | |
7255 | for a target that is is executing user code to stop. If FOREVER == | |
7256 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7257 | indication of this to the caller. Otherwise return the number of |
7258 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7259 | enough reason to return to the caller. */ | |
7260 | ||
3172dc30 | 7261 | static int |
74531fed PA |
7262 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7263 | int expecting_notif) | |
c906108c | 7264 | { |
2d717e4f | 7265 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7266 | int c; |
7267 | int tries; | |
7268 | int timeout; | |
df4b58fe | 7269 | int val = -1; |
c906108c | 7270 | |
2d717e4f DJ |
7271 | /* We're reading a new response. Make sure we don't look at a |
7272 | previously cached response. */ | |
7273 | rs->cached_wait_status = 0; | |
7274 | ||
6d820c5c | 7275 | strcpy (*buf, "timeout"); |
c906108c SS |
7276 | |
7277 | if (forever) | |
74531fed PA |
7278 | timeout = watchdog > 0 ? watchdog : -1; |
7279 | else if (expecting_notif) | |
7280 | timeout = 0; /* There should already be a char in the buffer. If | |
7281 | not, bail out. */ | |
c906108c SS |
7282 | else |
7283 | timeout = remote_timeout; | |
7284 | ||
7285 | #define MAX_TRIES 3 | |
7286 | ||
74531fed PA |
7287 | /* Process any number of notifications, and then return when |
7288 | we get a packet. */ | |
7289 | for (;;) | |
c906108c | 7290 | { |
74531fed PA |
7291 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7292 | times. */ | |
7293 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7294 | { |
74531fed PA |
7295 | /* This can loop forever if the remote side sends us |
7296 | characters continuously, but if it pauses, we'll get | |
7297 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7298 | we'll count that as a retry. | |
7299 | ||
7300 | Note that even when forever is set, we will only wait | |
7301 | forever prior to the start of a packet. After that, we | |
7302 | expect characters to arrive at a brisk pace. They should | |
7303 | show up within remote_timeout intervals. */ | |
7304 | do | |
7305 | c = readchar (timeout); | |
7306 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7307 | |
7308 | if (c == SERIAL_TIMEOUT) | |
7309 | { | |
74531fed PA |
7310 | if (expecting_notif) |
7311 | return -1; /* Don't complain, it's normal to not get | |
7312 | anything in this case. */ | |
7313 | ||
23860348 | 7314 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7315 | { |
2acceee2 | 7316 | QUIT; |
ce5ce7ed | 7317 | pop_target (); |
489eaeba | 7318 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7319 | } |
c906108c | 7320 | if (remote_debug) |
0f71a2f6 | 7321 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7322 | } |
74531fed PA |
7323 | else |
7324 | { | |
7325 | /* We've found the start of a packet or notification. | |
7326 | Now collect the data. */ | |
7327 | val = read_frame (buf, sizeof_buf); | |
7328 | if (val >= 0) | |
7329 | break; | |
7330 | } | |
7331 | ||
7332 | serial_write (remote_desc, "-", 1); | |
c906108c | 7333 | } |
c906108c | 7334 | |
74531fed PA |
7335 | if (tries > MAX_TRIES) |
7336 | { | |
7337 | /* We have tried hard enough, and just can't receive the | |
7338 | packet/notification. Give up. */ | |
7339 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7340 | |
74531fed PA |
7341 | /* Skip the ack char if we're in no-ack mode. */ |
7342 | if (!rs->noack_mode) | |
7343 | serial_write (remote_desc, "+", 1); | |
7344 | return -1; | |
7345 | } | |
c906108c | 7346 | |
74531fed PA |
7347 | /* If we got an ordinary packet, return that to our caller. */ |
7348 | if (c == '$') | |
c906108c SS |
7349 | { |
7350 | if (remote_debug) | |
43e526b9 | 7351 | { |
6e5abd65 PA |
7352 | struct cleanup *old_chain; |
7353 | char *str; | |
7354 | ||
7355 | str = escape_buffer (*buf, val); | |
7356 | old_chain = make_cleanup (xfree, str); | |
7357 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7358 | do_cleanups (old_chain); | |
43e526b9 | 7359 | } |
a6f3e723 SL |
7360 | |
7361 | /* Skip the ack char if we're in no-ack mode. */ | |
7362 | if (!rs->noack_mode) | |
7363 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7364 | return val; |
c906108c SS |
7365 | } |
7366 | ||
74531fed PA |
7367 | /* If we got a notification, handle it, and go back to looking |
7368 | for a packet. */ | |
7369 | else | |
7370 | { | |
7371 | gdb_assert (c == '%'); | |
7372 | ||
7373 | if (remote_debug) | |
7374 | { | |
6e5abd65 PA |
7375 | struct cleanup *old_chain; |
7376 | char *str; | |
7377 | ||
7378 | str = escape_buffer (*buf, val); | |
7379 | old_chain = make_cleanup (xfree, str); | |
7380 | fprintf_unfiltered (gdb_stdlog, | |
7381 | " Notification received: %s\n", | |
7382 | str); | |
7383 | do_cleanups (old_chain); | |
74531fed | 7384 | } |
c906108c | 7385 | |
74531fed | 7386 | handle_notification (*buf, val); |
c906108c | 7387 | |
74531fed | 7388 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7389 | |
74531fed PA |
7390 | if (expecting_notif) |
7391 | return -1; | |
7392 | } | |
7393 | } | |
7394 | } | |
7395 | ||
7396 | static int | |
7397 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7398 | { | |
7399 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7400 | } | |
7401 | ||
7402 | static int | |
7403 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7404 | { | |
7405 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7406 | } |
74531fed | 7407 | |
c906108c | 7408 | \f |
732f3f12 TT |
7409 | /* A helper function that just calls putpkt; for type correctness. */ |
7410 | ||
7411 | static int | |
7412 | putpkt_for_catch_errors (void *arg) | |
7413 | { | |
7414 | return putpkt (arg); | |
7415 | } | |
7416 | ||
c906108c | 7417 | static void |
7d85a9c0 | 7418 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7419 | { |
23860348 MS |
7420 | /* Use catch_errors so the user can quit from gdb even when we |
7421 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7422 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7423 | |
7424 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7425 | we do or not. For the existing stubs, kill is a noop. */ | |
7426 | target_mourn_inferior (); | |
7427 | } | |
7428 | ||
82f73884 PA |
7429 | static int |
7430 | remote_vkill (int pid, struct remote_state *rs) | |
7431 | { | |
7432 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7433 | return -1; | |
7434 | ||
7435 | /* Tell the remote target to detach. */ | |
7436 | sprintf (rs->buf, "vKill;%x", pid); | |
7437 | putpkt (rs->buf); | |
7438 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7439 | ||
7440 | if (packet_ok (rs->buf, | |
7441 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7442 | return 0; | |
7443 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7444 | return -1; | |
7445 | else | |
7446 | return 1; | |
7447 | } | |
7448 | ||
7449 | static void | |
7d85a9c0 | 7450 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7451 | { |
7452 | int res; | |
7453 | int pid = ptid_get_pid (inferior_ptid); | |
7454 | struct remote_state *rs = get_remote_state (); | |
7455 | ||
7456 | res = remote_vkill (pid, rs); | |
901f9912 | 7457 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7458 | { |
7459 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7460 | to specify the pid. */ | |
7461 | ||
7462 | putpkt ("k"); | |
7463 | #if 0 | |
7464 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7465 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7466 | res = 1; | |
7467 | #else | |
7468 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7469 | we do or not. For the existing stubs, kill is a noop. */ | |
7470 | res = 0; | |
7471 | #endif | |
7472 | } | |
7473 | ||
7474 | if (res != 0) | |
7475 | error (_("Can't kill process")); | |
7476 | ||
82f73884 PA |
7477 | target_mourn_inferior (); |
7478 | } | |
7479 | ||
c906108c | 7480 | static void |
136d6dae | 7481 | remote_mourn (struct target_ops *ops) |
c906108c | 7482 | { |
136d6dae | 7483 | remote_mourn_1 (ops); |
c906108c SS |
7484 | } |
7485 | ||
c906108c SS |
7486 | /* Worker function for remote_mourn. */ |
7487 | static void | |
fba45db2 | 7488 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7489 | { |
7490 | unpush_target (target); | |
ce5ce7ed | 7491 | |
8a2492ee PA |
7492 | /* remote_close takes care of doing most of the clean up. */ |
7493 | generic_mourn_inferior (); | |
c906108c SS |
7494 | } |
7495 | ||
2d717e4f DJ |
7496 | static void |
7497 | extended_remote_mourn_1 (struct target_ops *target) | |
7498 | { | |
7499 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7500 | |
e24a49d8 PA |
7501 | /* In case we got here due to an error, but we're going to stay |
7502 | connected. */ | |
7503 | rs->waiting_for_stop_reply = 0; | |
7504 | ||
74531fed PA |
7505 | /* We're no longer interested in these events. */ |
7506 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7507 | ||
dc1981d7 PA |
7508 | /* If the current general thread belonged to the process we just |
7509 | detached from or has exited, the remote side current general | |
7510 | thread becomes undefined. Considering a case like this: | |
7511 | ||
7512 | - We just got here due to a detach. | |
7513 | - The process that we're detaching from happens to immediately | |
7514 | report a global breakpoint being hit in non-stop mode, in the | |
7515 | same thread we had selected before. | |
7516 | - GDB attaches to this process again. | |
7517 | - This event happens to be the next event we handle. | |
7518 | ||
7519 | GDB would consider that the current general thread didn't need to | |
7520 | be set on the stub side (with Hg), since for all it knew, | |
7521 | GENERAL_THREAD hadn't changed. | |
7522 | ||
7523 | Notice that although in all-stop mode, the remote server always | |
7524 | sets the current thread to the thread reporting the stop event, | |
7525 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7526 | not* change the current thread when reporting a breakpoint hit, | |
7527 | due to the decoupling of event reporting and event handling. | |
7528 | ||
7529 | To keep things simple, we always invalidate our notion of the | |
7530 | current thread. */ | |
7531 | record_currthread (minus_one_ptid); | |
7532 | ||
2d717e4f DJ |
7533 | /* Unlike "target remote", we do not want to unpush the target; then |
7534 | the next time the user says "run", we won't be connected. */ | |
7535 | ||
48aa3c27 PA |
7536 | /* Call common code to mark the inferior as not running. */ |
7537 | generic_mourn_inferior (); | |
7538 | ||
d729566a | 7539 | if (!have_inferiors ()) |
2d717e4f | 7540 | { |
82f73884 PA |
7541 | if (!remote_multi_process_p (rs)) |
7542 | { | |
7543 | /* Check whether the target is running now - some remote stubs | |
7544 | automatically restart after kill. */ | |
7545 | putpkt ("?"); | |
7546 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7547 | ||
7548 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7549 | { | |
3e43a32a MS |
7550 | /* Assume that the target has been restarted. Set |
7551 | inferior_ptid so that bits of core GDB realizes | |
7552 | there's something here, e.g., so that the user can | |
7553 | say "kill" again. */ | |
82f73884 PA |
7554 | inferior_ptid = magic_null_ptid; |
7555 | } | |
82f73884 | 7556 | } |
2d717e4f DJ |
7557 | } |
7558 | } | |
c906108c SS |
7559 | |
7560 | static void | |
136d6dae | 7561 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7562 | { |
136d6dae | 7563 | extended_remote_mourn_1 (ops); |
2d717e4f | 7564 | } |
c906108c | 7565 | |
03583c20 UW |
7566 | static int |
7567 | extended_remote_supports_disable_randomization (void) | |
7568 | { | |
7569 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7570 | == PACKET_ENABLE); | |
7571 | } | |
7572 | ||
7573 | static void | |
7574 | extended_remote_disable_randomization (int val) | |
7575 | { | |
7576 | struct remote_state *rs = get_remote_state (); | |
7577 | char *reply; | |
7578 | ||
7579 | sprintf (rs->buf, "QDisableRandomization:%x", val); | |
7580 | putpkt (rs->buf); | |
7581 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7582 | if (*reply == '\0') | |
7583 | error (_("Target does not support QDisableRandomization.")); | |
7584 | if (strcmp (reply, "OK") != 0) | |
7585 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7586 | } | |
7587 | ||
2d717e4f DJ |
7588 | static int |
7589 | extended_remote_run (char *args) | |
7590 | { | |
7591 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7592 | int len; |
c906108c | 7593 | |
2d717e4f DJ |
7594 | /* If the user has disabled vRun support, or we have detected that |
7595 | support is not available, do not try it. */ | |
7596 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7597 | return -1; | |
424163ea | 7598 | |
2d717e4f DJ |
7599 | strcpy (rs->buf, "vRun;"); |
7600 | len = strlen (rs->buf); | |
c906108c | 7601 | |
2d717e4f DJ |
7602 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7603 | error (_("Remote file name too long for run packet")); | |
7604 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7605 | ||
d1a41061 | 7606 | gdb_assert (args != NULL); |
2d717e4f DJ |
7607 | if (*args) |
7608 | { | |
7609 | struct cleanup *back_to; | |
7610 | int i; | |
7611 | char **argv; | |
7612 | ||
d1a41061 | 7613 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7614 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7615 | for (i = 0; argv[i] != NULL; i++) | |
7616 | { | |
7617 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7618 | error (_("Argument list too long for run packet")); | |
7619 | rs->buf[len++] = ';'; | |
7620 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7621 | } | |
7622 | do_cleanups (back_to); | |
7623 | } | |
7624 | ||
7625 | rs->buf[len++] = '\0'; | |
7626 | ||
7627 | putpkt (rs->buf); | |
7628 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7629 | ||
7630 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7631 | { | |
7632 | /* We have a wait response; we don't need it, though. All is well. */ | |
7633 | return 0; | |
7634 | } | |
7635 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7636 | /* It wasn't disabled before, but it is now. */ | |
7637 | return -1; | |
7638 | else | |
7639 | { | |
7640 | if (remote_exec_file[0] == '\0') | |
7641 | error (_("Running the default executable on the remote target failed; " | |
7642 | "try \"set remote exec-file\"?")); | |
7643 | else | |
7644 | error (_("Running \"%s\" on the remote target failed"), | |
7645 | remote_exec_file); | |
7646 | } | |
c906108c SS |
7647 | } |
7648 | ||
2d717e4f DJ |
7649 | /* In the extended protocol we want to be able to do things like |
7650 | "run" and have them basically work as expected. So we need | |
7651 | a special create_inferior function. We support changing the | |
7652 | executable file and the command line arguments, but not the | |
7653 | environment. */ | |
7654 | ||
43ff13b4 | 7655 | static void |
2d717e4f | 7656 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7657 | char **env, int from_tty) |
43ff13b4 | 7658 | { |
43ff13b4 | 7659 | /* If running asynchronously, register the target file descriptor |
23860348 | 7660 | with the event loop. */ |
75c99385 | 7661 | if (target_can_async_p ()) |
2acceee2 | 7662 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7663 | |
03583c20 UW |
7664 | /* Disable address space randomization if requested (and supported). */ |
7665 | if (extended_remote_supports_disable_randomization ()) | |
7666 | extended_remote_disable_randomization (disable_randomization); | |
7667 | ||
43ff13b4 | 7668 | /* Now restart the remote server. */ |
2d717e4f DJ |
7669 | if (extended_remote_run (args) == -1) |
7670 | { | |
7671 | /* vRun was not supported. Fail if we need it to do what the | |
7672 | user requested. */ | |
7673 | if (remote_exec_file[0]) | |
7674 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7675 | if (args[0]) | |
7676 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7677 | |
2d717e4f DJ |
7678 | /* Fall back to "R". */ |
7679 | extended_remote_restart (); | |
7680 | } | |
424163ea | 7681 | |
6c95b8df PA |
7682 | if (!have_inferiors ()) |
7683 | { | |
7684 | /* Clean up from the last time we ran, before we mark the target | |
7685 | running again. This will mark breakpoints uninserted, and | |
7686 | get_offsets may insert breakpoints. */ | |
7687 | init_thread_list (); | |
7688 | init_wait_for_inferior (); | |
7689 | } | |
45280a52 | 7690 | |
49c62f2e | 7691 | add_current_inferior_and_thread (); |
c0a2216e | 7692 | |
2d717e4f DJ |
7693 | /* Get updated offsets, if the stub uses qOffsets. */ |
7694 | get_offsets (); | |
2d717e4f DJ |
7695 | } |
7696 | ||
7697 | static void | |
136d6dae VP |
7698 | extended_remote_create_inferior (struct target_ops *ops, |
7699 | char *exec_file, char *args, | |
2d717e4f DJ |
7700 | char **env, int from_tty) |
7701 | { | |
75c99385 | 7702 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7703 | } |
c906108c | 7704 | \f |
c5aa993b | 7705 | |
8181d85f DJ |
7706 | /* Insert a breakpoint. On targets that have software breakpoint |
7707 | support, we ask the remote target to do the work; on targets | |
7708 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7709 | |
7710 | static int | |
a6d9a66e UW |
7711 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7712 | struct bp_target_info *bp_tgt) | |
c906108c | 7713 | { |
d471ea57 AC |
7714 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7715 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7716 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7717 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7718 | |
444abaca | 7719 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7720 | { |
7c0f6dcc | 7721 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7722 | struct remote_state *rs; |
7723 | char *p; | |
7c0f6dcc | 7724 | int bpsize; |
4fff2411 | 7725 | |
a1dcb23a | 7726 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7727 | |
7728 | rs = get_remote_state (); | |
7729 | p = rs->buf; | |
802188a7 | 7730 | |
96baa820 JM |
7731 | *(p++) = 'Z'; |
7732 | *(p++) = '0'; | |
7733 | *(p++) = ','; | |
7c0f6dcc | 7734 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7735 | p += hexnumstr (p, addr); |
7c0f6dcc | 7736 | sprintf (p, ",%d", bpsize); |
802188a7 | 7737 | |
6d820c5c DJ |
7738 | putpkt (rs->buf); |
7739 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7740 | |
6d820c5c | 7741 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7742 | { |
d471ea57 AC |
7743 | case PACKET_ERROR: |
7744 | return -1; | |
7745 | case PACKET_OK: | |
7c0f6dcc JL |
7746 | bp_tgt->placed_address = addr; |
7747 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7748 | return 0; |
7749 | case PACKET_UNKNOWN: | |
7750 | break; | |
96baa820 JM |
7751 | } |
7752 | } | |
c906108c | 7753 | |
a6d9a66e | 7754 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7755 | } |
7756 | ||
7757 | static int | |
a6d9a66e UW |
7758 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7759 | struct bp_target_info *bp_tgt) | |
c906108c | 7760 | { |
8181d85f | 7761 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7762 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7763 | |
444abaca | 7764 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7765 | { |
6d820c5c | 7766 | char *p = rs->buf; |
802188a7 | 7767 | |
96baa820 JM |
7768 | *(p++) = 'z'; |
7769 | *(p++) = '0'; | |
7770 | *(p++) = ','; | |
7771 | ||
8181d85f DJ |
7772 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7773 | p += hexnumstr (p, addr); | |
7774 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7775 | |
6d820c5c DJ |
7776 | putpkt (rs->buf); |
7777 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7778 | |
6d820c5c | 7779 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7780 | } |
7781 | ||
a6d9a66e | 7782 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7783 | } |
7784 | ||
d471ea57 AC |
7785 | static int |
7786 | watchpoint_to_Z_packet (int type) | |
7787 | { | |
7788 | switch (type) | |
7789 | { | |
7790 | case hw_write: | |
bb858e6a | 7791 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7792 | break; |
7793 | case hw_read: | |
bb858e6a | 7794 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7795 | break; |
7796 | case hw_access: | |
bb858e6a | 7797 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7798 | break; |
7799 | default: | |
8e65ff28 | 7800 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7801 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7802 | } |
7803 | } | |
7804 | ||
3c3bea1c | 7805 | static int |
0cf6dd15 TJB |
7806 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7807 | struct expression *cond) | |
96baa820 | 7808 | { |
d01949b6 | 7809 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7810 | char *p; |
d471ea57 | 7811 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7812 | |
444abaca | 7813 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7814 | return 1; |
802188a7 | 7815 | |
6d820c5c DJ |
7816 | sprintf (rs->buf, "Z%x,", packet); |
7817 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7818 | addr = remote_address_masked (addr); |
7819 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7820 | sprintf (p, ",%x", len); |
802188a7 | 7821 | |
6d820c5c DJ |
7822 | putpkt (rs->buf); |
7823 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7824 | |
6d820c5c | 7825 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7826 | { |
7827 | case PACKET_ERROR: | |
d471ea57 | 7828 | return -1; |
85d721b8 PA |
7829 | case PACKET_UNKNOWN: |
7830 | return 1; | |
d471ea57 AC |
7831 | case PACKET_OK: |
7832 | return 0; | |
7833 | } | |
8e65ff28 | 7834 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7835 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7836 | } |
7837 | ||
d471ea57 | 7838 | |
3c3bea1c | 7839 | static int |
0cf6dd15 TJB |
7840 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
7841 | struct expression *cond) | |
96baa820 | 7842 | { |
d01949b6 | 7843 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7844 | char *p; |
d471ea57 AC |
7845 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7846 | ||
444abaca | 7847 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 7848 | return -1; |
802188a7 | 7849 | |
6d820c5c DJ |
7850 | sprintf (rs->buf, "z%x,", packet); |
7851 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7852 | addr = remote_address_masked (addr); |
7853 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7854 | sprintf (p, ",%x", len); |
6d820c5c DJ |
7855 | putpkt (rs->buf); |
7856 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7857 | |
6d820c5c | 7858 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7859 | { |
7860 | case PACKET_ERROR: | |
7861 | case PACKET_UNKNOWN: | |
7862 | return -1; | |
7863 | case PACKET_OK: | |
7864 | return 0; | |
7865 | } | |
8e65ff28 | 7866 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7867 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7868 | } |
7869 | ||
3c3bea1c | 7870 | |
501eef12 | 7871 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 7872 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 7873 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 7874 | |
480a3f21 PW |
7875 | static int |
7876 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
7877 | { | |
7878 | if (remote_hw_watchpoint_length_limit == 0) | |
7879 | return 0; | |
7880 | else if (remote_hw_watchpoint_length_limit < 0) | |
7881 | return 1; | |
7882 | else if (len <= remote_hw_watchpoint_length_limit) | |
7883 | return 1; | |
7884 | else | |
7885 | return 0; | |
7886 | } | |
7887 | ||
b9362cc7 | 7888 | static int |
3c3bea1c | 7889 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7890 | { |
3c3bea1c GS |
7891 | if (type == bp_hardware_breakpoint) |
7892 | { | |
7893 | if (remote_hw_breakpoint_limit == 0) | |
7894 | return 0; | |
501eef12 AC |
7895 | else if (remote_hw_breakpoint_limit < 0) |
7896 | return 1; | |
3c3bea1c GS |
7897 | else if (cnt <= remote_hw_breakpoint_limit) |
7898 | return 1; | |
7899 | } | |
7900 | else | |
7901 | { | |
7902 | if (remote_hw_watchpoint_limit == 0) | |
7903 | return 0; | |
501eef12 AC |
7904 | else if (remote_hw_watchpoint_limit < 0) |
7905 | return 1; | |
3c3bea1c GS |
7906 | else if (ot) |
7907 | return -1; | |
7908 | else if (cnt <= remote_hw_watchpoint_limit) | |
7909 | return 1; | |
7910 | } | |
7911 | return -1; | |
7912 | } | |
7913 | ||
b9362cc7 | 7914 | static int |
3c3bea1c GS |
7915 | remote_stopped_by_watchpoint (void) |
7916 | { | |
82f73884 | 7917 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7918 | } |
7919 | ||
4aa7a7f5 JJ |
7920 | static int |
7921 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7922 | { |
4aa7a7f5 | 7923 | int rc = 0; |
a744cf53 | 7924 | |
d983da9c | 7925 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7926 | { |
7927 | *addr_p = remote_watch_data_address; | |
7928 | rc = 1; | |
7929 | } | |
7930 | ||
7931 | return rc; | |
3c3bea1c GS |
7932 | } |
7933 | ||
7934 | ||
7935 | static int | |
a6d9a66e UW |
7936 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
7937 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 7938 | { |
8181d85f | 7939 | CORE_ADDR addr; |
4fff2411 JZ |
7940 | struct remote_state *rs; |
7941 | char *p; | |
802188a7 | 7942 | |
c8189ed1 | 7943 | /* The length field should be set to the size of a breakpoint |
8181d85f | 7944 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 7945 | |
a1dcb23a | 7946 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 7947 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 7948 | |
444abaca | 7949 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7950 | return -1; |
2bc416ba | 7951 | |
4fff2411 JZ |
7952 | rs = get_remote_state (); |
7953 | p = rs->buf; | |
7954 | ||
96baa820 JM |
7955 | *(p++) = 'Z'; |
7956 | *(p++) = '1'; | |
7957 | *(p++) = ','; | |
802188a7 | 7958 | |
8181d85f | 7959 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7960 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7961 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7962 | |
6d820c5c DJ |
7963 | putpkt (rs->buf); |
7964 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7965 | |
6d820c5c | 7966 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7967 | { |
7968 | case PACKET_ERROR: | |
7969 | case PACKET_UNKNOWN: | |
7970 | return -1; | |
7971 | case PACKET_OK: | |
7972 | return 0; | |
7973 | } | |
8e65ff28 | 7974 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7975 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
7976 | } |
7977 | ||
d471ea57 | 7978 | |
802188a7 | 7979 | static int |
a6d9a66e UW |
7980 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
7981 | struct bp_target_info *bp_tgt) | |
96baa820 | 7982 | { |
8181d85f | 7983 | CORE_ADDR addr; |
d01949b6 | 7984 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 7985 | char *p = rs->buf; |
c8189ed1 | 7986 | |
444abaca | 7987 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7988 | return -1; |
802188a7 | 7989 | |
96baa820 JM |
7990 | *(p++) = 'z'; |
7991 | *(p++) = '1'; | |
7992 | *(p++) = ','; | |
802188a7 | 7993 | |
8181d85f | 7994 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7995 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7996 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7997 | |
6d820c5c DJ |
7998 | putpkt (rs->buf); |
7999 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8000 | |
6d820c5c | 8001 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8002 | { |
8003 | case PACKET_ERROR: | |
8004 | case PACKET_UNKNOWN: | |
8005 | return -1; | |
8006 | case PACKET_OK: | |
8007 | return 0; | |
8008 | } | |
8e65ff28 | 8009 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8010 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8011 | } |
96baa820 | 8012 | |
23860348 | 8013 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8014 | |
c5aa993b JM |
8015 | static unsigned long crc32_table[256] = |
8016 | {0, 0}; | |
c906108c SS |
8017 | |
8018 | static unsigned long | |
4a5e7a5b | 8019 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8020 | { |
c5aa993b | 8021 | if (!crc32_table[1]) |
c906108c | 8022 | { |
23860348 | 8023 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8024 | int i, j; |
8025 | unsigned int c; | |
8026 | ||
8027 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8028 | { |
8029 | for (c = i << 24, j = 8; j > 0; --j) | |
8030 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8031 | crc32_table[i] = c; | |
8032 | } | |
c906108c SS |
8033 | } |
8034 | ||
8035 | while (len--) | |
8036 | { | |
8037 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8038 | buf++; | |
8039 | } | |
8040 | return crc; | |
8041 | } | |
8042 | ||
4a5e7a5b PA |
8043 | /* Verify memory using the "qCRC:" request. */ |
8044 | ||
8045 | static int | |
8046 | remote_verify_memory (struct target_ops *ops, | |
8047 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8048 | { | |
8049 | struct remote_state *rs = get_remote_state (); | |
8050 | unsigned long host_crc, target_crc; | |
8051 | char *tmp; | |
8052 | ||
8053 | /* FIXME: assumes lma can fit into long. */ | |
8054 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8055 | (long) lma, (long) size); | |
8056 | putpkt (rs->buf); | |
8057 | ||
8058 | /* Be clever; compute the host_crc before waiting for target | |
8059 | reply. */ | |
8060 | host_crc = crc32 (data, size, 0xffffffff); | |
8061 | ||
8062 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8063 | if (rs->buf[0] == 'E') | |
8064 | return -1; | |
8065 | ||
8066 | if (rs->buf[0] != 'C') | |
8067 | error (_("remote target does not support this operation")); | |
8068 | ||
8069 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8070 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8071 | ||
8072 | return (host_crc == target_crc); | |
8073 | } | |
8074 | ||
c906108c SS |
8075 | /* compare-sections command |
8076 | ||
8077 | With no arguments, compares each loadable section in the exec bfd | |
8078 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8079 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8080 | |
c906108c | 8081 | static void |
fba45db2 | 8082 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8083 | { |
8084 | asection *s; | |
c906108c | 8085 | struct cleanup *old_chain; |
085dd6e6 | 8086 | char *sectdata; |
ce359b09 | 8087 | const char *sectname; |
c906108c SS |
8088 | bfd_size_type size; |
8089 | bfd_vma lma; | |
8090 | int matched = 0; | |
8091 | int mismatched = 0; | |
4a5e7a5b | 8092 | int res; |
c906108c SS |
8093 | |
8094 | if (!exec_bfd) | |
8a3fe4f8 | 8095 | error (_("command cannot be used without an exec file")); |
c906108c | 8096 | |
c5aa993b | 8097 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8098 | { |
8099 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8100 | continue; /* Skip non-loadable section. */ |
c906108c | 8101 | |
2c500098 | 8102 | size = bfd_get_section_size (s); |
c906108c | 8103 | if (size == 0) |
0df8b418 | 8104 | continue; /* Skip zero-length section. */ |
c906108c | 8105 | |
ce359b09 | 8106 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8107 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8108 | continue; /* Not the section selected by user. */ |
c906108c | 8109 | |
0df8b418 | 8110 | matched = 1; /* Do this section. */ |
c906108c | 8111 | lma = s->lma; |
c906108c | 8112 | |
c906108c | 8113 | sectdata = xmalloc (size); |
b8c9b27d | 8114 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8115 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8116 | |
4a5e7a5b PA |
8117 | res = target_verify_memory (sectdata, lma, size); |
8118 | ||
8119 | if (res == -1) | |
5af949e3 UW |
8120 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8121 | paddress (target_gdbarch, lma), | |
8122 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8123 | |
5af949e3 UW |
8124 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8125 | paddress (target_gdbarch, lma), | |
8126 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8127 | if (res) |
c906108c SS |
8128 | printf_filtered ("matched.\n"); |
8129 | else | |
c5aa993b JM |
8130 | { |
8131 | printf_filtered ("MIS-MATCHED!\n"); | |
8132 | mismatched++; | |
8133 | } | |
c906108c SS |
8134 | |
8135 | do_cleanups (old_chain); | |
8136 | } | |
8137 | if (mismatched > 0) | |
8a3fe4f8 AC |
8138 | warning (_("One or more sections of the remote executable does not match\n\ |
8139 | the loaded file\n")); | |
c906108c | 8140 | if (args && !matched) |
a3f17187 | 8141 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8142 | } |
8143 | ||
0e7f50da UW |
8144 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8145 | into remote target. The number of bytes written to the remote | |
8146 | target is returned, or -1 for error. */ | |
8147 | ||
8148 | static LONGEST | |
8149 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8150 | const char *annex, const gdb_byte *writebuf, | |
8151 | ULONGEST offset, LONGEST len, | |
8152 | struct packet_config *packet) | |
8153 | { | |
8154 | int i, buf_len; | |
8155 | ULONGEST n; | |
0e7f50da UW |
8156 | struct remote_state *rs = get_remote_state (); |
8157 | int max_size = get_memory_write_packet_size (); | |
8158 | ||
8159 | if (packet->support == PACKET_DISABLE) | |
8160 | return -1; | |
8161 | ||
8162 | /* Insert header. */ | |
8163 | i = snprintf (rs->buf, max_size, | |
8164 | "qXfer:%s:write:%s:%s:", | |
8165 | object_name, annex ? annex : "", | |
8166 | phex_nz (offset, sizeof offset)); | |
8167 | max_size -= (i + 1); | |
8168 | ||
8169 | /* Escape as much data as fits into rs->buf. */ | |
8170 | buf_len = remote_escape_output | |
8171 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8172 | ||
8173 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8174 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8175 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8176 | return -1; | |
8177 | ||
8178 | unpack_varlen_hex (rs->buf, &n); | |
8179 | return n; | |
8180 | } | |
8181 | ||
0876f84a DJ |
8182 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8183 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8184 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8185 | The number of bytes read may be less than LEN without indicating an | |
8186 | EOF. PACKET is checked and updated to indicate whether the remote | |
8187 | target supports this object. */ | |
8188 | ||
8189 | static LONGEST | |
8190 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8191 | const char *annex, | |
8192 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8193 | struct packet_config *packet) | |
8194 | { | |
8195 | static char *finished_object; | |
8196 | static char *finished_annex; | |
8197 | static ULONGEST finished_offset; | |
8198 | ||
8199 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8200 | LONGEST i, n, packet_len; |
8201 | ||
8202 | if (packet->support == PACKET_DISABLE) | |
8203 | return -1; | |
8204 | ||
8205 | /* Check whether we've cached an end-of-object packet that matches | |
8206 | this request. */ | |
8207 | if (finished_object) | |
8208 | { | |
8209 | if (strcmp (object_name, finished_object) == 0 | |
8210 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8211 | && offset == finished_offset) | |
8212 | return 0; | |
8213 | ||
8214 | /* Otherwise, we're now reading something different. Discard | |
8215 | the cache. */ | |
8216 | xfree (finished_object); | |
8217 | xfree (finished_annex); | |
8218 | finished_object = NULL; | |
8219 | finished_annex = NULL; | |
8220 | } | |
8221 | ||
8222 | /* Request only enough to fit in a single packet. The actual data | |
8223 | may not, since we don't know how much of it will need to be escaped; | |
8224 | the target is free to respond with slightly less data. We subtract | |
8225 | five to account for the response type and the protocol frame. */ | |
8226 | n = min (get_remote_packet_size () - 5, len); | |
8227 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8228 | object_name, annex ? annex : "", | |
8229 | phex_nz (offset, sizeof offset), | |
8230 | phex_nz (n, sizeof n)); | |
8231 | i = putpkt (rs->buf); | |
8232 | if (i < 0) | |
8233 | return -1; | |
8234 | ||
8235 | rs->buf[0] = '\0'; | |
8236 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8237 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8238 | return -1; | |
8239 | ||
8240 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8241 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8242 | ||
8243 | /* 'm' means there is (or at least might be) more data after this | |
8244 | batch. That does not make sense unless there's at least one byte | |
8245 | of data in this reply. */ | |
8246 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8247 | error (_("Remote qXfer reply contained no data.")); | |
8248 | ||
8249 | /* Got some data. */ | |
8250 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8251 | ||
8252 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8253 | or possibly empty. If we have the final block of a non-empty |
8254 | object, record this fact to bypass a subsequent partial read. */ | |
8255 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8256 | { |
8257 | finished_object = xstrdup (object_name); | |
8258 | finished_annex = xstrdup (annex ? annex : ""); | |
8259 | finished_offset = offset + i; | |
8260 | } | |
8261 | ||
8262 | return i; | |
8263 | } | |
8264 | ||
1e3ff5ad | 8265 | static LONGEST |
4b8a223f | 8266 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8267 | const char *annex, gdb_byte *readbuf, |
8268 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8269 | { |
82f73884 | 8270 | struct remote_state *rs; |
c906108c | 8271 | int i; |
6d820c5c | 8272 | char *p2; |
1e3ff5ad | 8273 | char query_type; |
c906108c | 8274 | |
e6e4e701 | 8275 | set_remote_traceframe (); |
82f73884 PA |
8276 | set_general_thread (inferior_ptid); |
8277 | ||
8278 | rs = get_remote_state (); | |
8279 | ||
b2182ed2 | 8280 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8281 | if (object == TARGET_OBJECT_MEMORY) |
8282 | { | |
8283 | int xfered; | |
a744cf53 | 8284 | |
21e3b9b9 DJ |
8285 | errno = 0; |
8286 | ||
2d717e4f DJ |
8287 | /* If the remote target is connected but not running, we should |
8288 | pass this request down to a lower stratum (e.g. the executable | |
8289 | file). */ | |
8290 | if (!target_has_execution) | |
8291 | return 0; | |
8292 | ||
21e3b9b9 | 8293 | if (writebuf != NULL) |
b2182ed2 | 8294 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8295 | else |
b2182ed2 | 8296 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8297 | |
8298 | if (xfered > 0) | |
8299 | return xfered; | |
8300 | else if (xfered == 0 && errno == 0) | |
8301 | return 0; | |
8302 | else | |
8303 | return -1; | |
8304 | } | |
8305 | ||
0df8b418 | 8306 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8307 | if (object == TARGET_OBJECT_SPU) |
8308 | { | |
8309 | if (readbuf) | |
8310 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8311 | &remote_protocol_packets | |
8312 | [PACKET_qXfer_spu_read]); | |
8313 | else | |
8314 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8315 | &remote_protocol_packets | |
8316 | [PACKET_qXfer_spu_write]); | |
8317 | } | |
8318 | ||
4aa995e1 PA |
8319 | /* Handle extra signal info using qxfer packets. */ |
8320 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8321 | { | |
8322 | if (readbuf) | |
8323 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8324 | &remote_protocol_packets | |
8325 | [PACKET_qXfer_siginfo_read]); | |
8326 | else | |
3e43a32a MS |
8327 | return remote_write_qxfer (ops, "siginfo", annex, |
8328 | writebuf, offset, len, | |
4aa995e1 PA |
8329 | &remote_protocol_packets |
8330 | [PACKET_qXfer_siginfo_write]); | |
8331 | } | |
8332 | ||
0fb4aa4b PA |
8333 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8334 | { | |
8335 | if (readbuf) | |
3e43a32a MS |
8336 | return remote_read_qxfer (ops, "statictrace", annex, |
8337 | readbuf, offset, len, | |
0fb4aa4b PA |
8338 | &remote_protocol_packets |
8339 | [PACKET_qXfer_statictrace_read]); | |
8340 | else | |
8341 | return -1; | |
8342 | } | |
8343 | ||
a76d924d DJ |
8344 | /* Only handle flash writes. */ |
8345 | if (writebuf != NULL) | |
8346 | { | |
8347 | LONGEST xfered; | |
8348 | ||
8349 | switch (object) | |
8350 | { | |
8351 | case TARGET_OBJECT_FLASH: | |
8352 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8353 | ||
8354 | if (xfered > 0) | |
8355 | return xfered; | |
8356 | else if (xfered == 0 && errno == 0) | |
8357 | return 0; | |
8358 | else | |
8359 | return -1; | |
8360 | ||
8361 | default: | |
8362 | return -1; | |
8363 | } | |
8364 | } | |
4b8a223f | 8365 | |
1e3ff5ad AC |
8366 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8367 | objects!!! Instead specify new query packets. */ | |
8368 | switch (object) | |
c906108c | 8369 | { |
1e3ff5ad AC |
8370 | case TARGET_OBJECT_AVR: |
8371 | query_type = 'R'; | |
8372 | break; | |
802188a7 RM |
8373 | |
8374 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8375 | gdb_assert (annex == NULL); |
8376 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8377 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8378 | |
23181151 DJ |
8379 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8380 | return remote_read_qxfer | |
8381 | (ops, "features", annex, readbuf, offset, len, | |
8382 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8383 | ||
cfa9d6d9 DJ |
8384 | case TARGET_OBJECT_LIBRARIES: |
8385 | return remote_read_qxfer | |
8386 | (ops, "libraries", annex, readbuf, offset, len, | |
8387 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8388 | ||
2268b414 JK |
8389 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8390 | return remote_read_qxfer | |
8391 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8392 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8393 | ||
fd79ecee DJ |
8394 | case TARGET_OBJECT_MEMORY_MAP: |
8395 | gdb_assert (annex == NULL); | |
8396 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8397 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8398 | ||
07e059b5 VP |
8399 | case TARGET_OBJECT_OSDATA: |
8400 | /* Should only get here if we're connected. */ | |
8401 | gdb_assert (remote_desc); | |
8402 | return remote_read_qxfer | |
8403 | (ops, "osdata", annex, readbuf, offset, len, | |
8404 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8405 | ||
dc146f7c VP |
8406 | case TARGET_OBJECT_THREADS: |
8407 | gdb_assert (annex == NULL); | |
8408 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8409 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8410 | ||
b3b9301e PA |
8411 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8412 | gdb_assert (annex == NULL); | |
8413 | return remote_read_qxfer | |
8414 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8415 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8416 | |
8417 | case TARGET_OBJECT_FDPIC: | |
8418 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8419 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
1e3ff5ad | 8420 | default: |
c906108c SS |
8421 | return -1; |
8422 | } | |
8423 | ||
4b8a223f | 8424 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8425 | buffer size. */ |
4b8a223f | 8426 | if (offset == 0 && len == 0) |
ea9c271d | 8427 | return (get_remote_packet_size ()); |
0df8b418 | 8428 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8429 | large enough let the caller deal with it. */ |
ea9c271d | 8430 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8431 | return -1; |
ea9c271d | 8432 | len = get_remote_packet_size (); |
1e3ff5ad | 8433 | |
23860348 | 8434 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8435 | if (!remote_desc) |
8a3fe4f8 | 8436 | error (_("remote query is only available after target open")); |
c906108c | 8437 | |
1e3ff5ad | 8438 | gdb_assert (annex != NULL); |
4b8a223f | 8439 | gdb_assert (readbuf != NULL); |
c906108c | 8440 | |
6d820c5c | 8441 | p2 = rs->buf; |
c906108c SS |
8442 | *p2++ = 'q'; |
8443 | *p2++ = query_type; | |
8444 | ||
23860348 MS |
8445 | /* We used one buffer char for the remote protocol q command and |
8446 | another for the query type. As the remote protocol encapsulation | |
8447 | uses 4 chars plus one extra in case we are debugging | |
8448 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8449 | string. */ | |
c906108c | 8450 | i = 0; |
ea9c271d | 8451 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8452 | { |
1e3ff5ad AC |
8453 | /* Bad caller may have sent forbidden characters. */ |
8454 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8455 | *p2++ = annex[i]; | |
c906108c SS |
8456 | i++; |
8457 | } | |
1e3ff5ad AC |
8458 | *p2 = '\0'; |
8459 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8460 | |
6d820c5c | 8461 | i = putpkt (rs->buf); |
c5aa993b JM |
8462 | if (i < 0) |
8463 | return i; | |
c906108c | 8464 | |
6d820c5c DJ |
8465 | getpkt (&rs->buf, &rs->buf_size, 0); |
8466 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8467 | |
cfd77fa1 | 8468 | return strlen ((char *) readbuf); |
c906108c SS |
8469 | } |
8470 | ||
08388c79 DE |
8471 | static int |
8472 | remote_search_memory (struct target_ops* ops, | |
8473 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8474 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8475 | CORE_ADDR *found_addrp) | |
8476 | { | |
5af949e3 | 8477 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8478 | struct remote_state *rs = get_remote_state (); |
8479 | int max_size = get_memory_write_packet_size (); | |
8480 | struct packet_config *packet = | |
8481 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8482 | /* Number of packet bytes used to encode the pattern; |
8483 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8484 | int escaped_pattern_len; |
0df8b418 | 8485 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8486 | int used_pattern_len; |
8487 | int i; | |
8488 | int found; | |
8489 | ULONGEST found_addr; | |
8490 | ||
8491 | /* Don't go to the target if we don't have to. | |
8492 | This is done before checking packet->support to avoid the possibility that | |
8493 | a success for this edge case means the facility works in general. */ | |
8494 | if (pattern_len > search_space_len) | |
8495 | return 0; | |
8496 | if (pattern_len == 0) | |
8497 | { | |
8498 | *found_addrp = start_addr; | |
8499 | return 1; | |
8500 | } | |
8501 | ||
8502 | /* If we already know the packet isn't supported, fall back to the simple | |
8503 | way of searching memory. */ | |
8504 | ||
8505 | if (packet->support == PACKET_DISABLE) | |
8506 | { | |
8507 | /* Target doesn't provided special support, fall back and use the | |
8508 | standard support (copy memory and do the search here). */ | |
8509 | return simple_search_memory (ops, start_addr, search_space_len, | |
8510 | pattern, pattern_len, found_addrp); | |
8511 | } | |
8512 | ||
8513 | /* Insert header. */ | |
8514 | i = snprintf (rs->buf, max_size, | |
8515 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8516 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8517 | phex_nz (search_space_len, sizeof (search_space_len))); |
8518 | max_size -= (i + 1); | |
8519 | ||
8520 | /* Escape as much data as fits into rs->buf. */ | |
8521 | escaped_pattern_len = | |
8522 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8523 | &used_pattern_len, max_size); | |
8524 | ||
8525 | /* Bail if the pattern is too large. */ | |
8526 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8527 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8528 | |
8529 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8530 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8531 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8532 | { | |
8533 | /* The request may not have worked because the command is not | |
8534 | supported. If so, fall back to the simple way. */ | |
8535 | if (packet->support == PACKET_DISABLE) | |
8536 | { | |
8537 | return simple_search_memory (ops, start_addr, search_space_len, | |
8538 | pattern, pattern_len, found_addrp); | |
8539 | } | |
8540 | return -1; | |
8541 | } | |
8542 | ||
8543 | if (rs->buf[0] == '0') | |
8544 | found = 0; | |
8545 | else if (rs->buf[0] == '1') | |
8546 | { | |
8547 | found = 1; | |
8548 | if (rs->buf[1] != ',') | |
10e0fa18 | 8549 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8550 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8551 | *found_addrp = found_addr; | |
8552 | } | |
8553 | else | |
10e0fa18 | 8554 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8555 | |
8556 | return found; | |
8557 | } | |
8558 | ||
96baa820 JM |
8559 | static void |
8560 | remote_rcmd (char *command, | |
d9fcf2fb | 8561 | struct ui_file *outbuf) |
96baa820 | 8562 | { |
d01949b6 | 8563 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8564 | char *p = rs->buf; |
96baa820 JM |
8565 | |
8566 | if (!remote_desc) | |
8a3fe4f8 | 8567 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8568 | |
23860348 | 8569 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8570 | if (command == NULL) |
8571 | command = ""; | |
8572 | ||
23860348 | 8573 | /* The query prefix. */ |
2e9f7625 DJ |
8574 | strcpy (rs->buf, "qRcmd,"); |
8575 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8576 | |
3e43a32a MS |
8577 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8578 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8579 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8580 | |
23860348 | 8581 | /* Encode the actual command. */ |
cfd77fa1 | 8582 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8583 | |
6d820c5c | 8584 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8585 | error (_("Communication problem with target.")); |
96baa820 JM |
8586 | |
8587 | /* get/display the response */ | |
8588 | while (1) | |
8589 | { | |
2e9f7625 DJ |
8590 | char *buf; |
8591 | ||
00bf0b85 | 8592 | /* XXX - see also remote_get_noisy_reply(). */ |
2e9f7625 | 8593 | rs->buf[0] = '\0'; |
6d820c5c | 8594 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 8595 | buf = rs->buf; |
96baa820 | 8596 | if (buf[0] == '\0') |
8a3fe4f8 | 8597 | error (_("Target does not support this command.")); |
96baa820 JM |
8598 | if (buf[0] == 'O' && buf[1] != 'K') |
8599 | { | |
23860348 | 8600 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8601 | continue; |
8602 | } | |
8603 | if (strcmp (buf, "OK") == 0) | |
8604 | break; | |
7be570e7 JM |
8605 | if (strlen (buf) == 3 && buf[0] == 'E' |
8606 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8607 | { | |
8a3fe4f8 | 8608 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8609 | } |
96baa820 JM |
8610 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8611 | { | |
8612 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8613 | |
96baa820 JM |
8614 | fputc_unfiltered (c, outbuf); |
8615 | } | |
8616 | break; | |
8617 | } | |
8618 | } | |
8619 | ||
fd79ecee DJ |
8620 | static VEC(mem_region_s) * |
8621 | remote_memory_map (struct target_ops *ops) | |
8622 | { | |
8623 | VEC(mem_region_s) *result = NULL; | |
8624 | char *text = target_read_stralloc (¤t_target, | |
8625 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8626 | ||
8627 | if (text) | |
8628 | { | |
8629 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8630 | |
fd79ecee DJ |
8631 | result = parse_memory_map (text); |
8632 | do_cleanups (back_to); | |
8633 | } | |
8634 | ||
8635 | return result; | |
8636 | } | |
8637 | ||
c906108c | 8638 | static void |
fba45db2 | 8639 | packet_command (char *args, int from_tty) |
c906108c | 8640 | { |
d01949b6 | 8641 | struct remote_state *rs = get_remote_state (); |
c906108c | 8642 | |
c5aa993b | 8643 | if (!remote_desc) |
8a3fe4f8 | 8644 | error (_("command can only be used with remote target")); |
c906108c | 8645 | |
c5aa993b | 8646 | if (!args) |
8a3fe4f8 | 8647 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8648 | |
8649 | puts_filtered ("sending: "); | |
8650 | print_packet (args); | |
8651 | puts_filtered ("\n"); | |
8652 | putpkt (args); | |
8653 | ||
6d820c5c | 8654 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8655 | puts_filtered ("received: "); |
6d820c5c | 8656 | print_packet (rs->buf); |
c906108c SS |
8657 | puts_filtered ("\n"); |
8658 | } | |
8659 | ||
8660 | #if 0 | |
23860348 | 8661 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8662 | |
a14ed312 | 8663 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8664 | |
a14ed312 | 8665 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8666 | |
a14ed312 | 8667 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8668 | |
a14ed312 | 8669 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8670 | |
23860348 | 8671 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8672 | |
a14ed312 | 8673 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8674 | |
23860348 | 8675 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8676 | |
a14ed312 | 8677 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8678 | |
a14ed312 | 8679 | static void init_remote_threadtests (void); |
c906108c | 8680 | |
23860348 | 8681 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8682 | |
8683 | static void | |
fba45db2 | 8684 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8685 | { |
8686 | int sample_thread = SAMPLE_THREAD; | |
8687 | ||
a3f17187 | 8688 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8689 | set_general_thread (sample_thread); |
c906108c SS |
8690 | } |
8691 | ||
8692 | ||
8693 | static void | |
fba45db2 | 8694 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8695 | { |
8696 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8697 | int pid = ptid_get_pid (inferior_ptid); |
8698 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8699 | |
79d7f229 | 8700 | if (remote_thread_alive (ptid)) |
c906108c SS |
8701 | printf_filtered ("PASS: Thread alive test\n"); |
8702 | else | |
8703 | printf_filtered ("FAIL: Thread alive test\n"); | |
8704 | } | |
8705 | ||
23860348 | 8706 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8707 | |
8708 | void | |
fba45db2 | 8709 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8710 | { |
8711 | char hexid[20]; | |
8712 | ||
23860348 | 8713 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8714 | hexid[16] = 0; |
8715 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8716 | } | |
8717 | ||
8718 | static void | |
fba45db2 | 8719 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8720 | { |
8721 | int startflag = 1; | |
8722 | threadref nextthread; | |
8723 | int done, result_count; | |
8724 | threadref threadlist[3]; | |
8725 | ||
8726 | printf_filtered ("Remote Threadlist test\n"); | |
8727 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8728 | &result_count, &threadlist[0])) | |
8729 | printf_filtered ("FAIL: threadlist test\n"); | |
8730 | else | |
8731 | { | |
8732 | threadref *scan = threadlist; | |
8733 | threadref *limit = scan + result_count; | |
8734 | ||
8735 | while (scan < limit) | |
8736 | output_threadid (" thread ", scan++); | |
8737 | } | |
8738 | } | |
8739 | ||
8740 | void | |
fba45db2 | 8741 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8742 | { |
8743 | output_threadid ("Threadid: ", &info->threadid); | |
8744 | printf_filtered ("Name: %s\n ", info->shortname); | |
8745 | printf_filtered ("State: %s\n", info->display); | |
8746 | printf_filtered ("other: %s\n\n", info->more_display); | |
8747 | } | |
8748 | ||
8749 | int | |
fba45db2 | 8750 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8751 | { |
8752 | int result; | |
8753 | int set; | |
8754 | struct gdb_ext_thread_info threadinfo; | |
8755 | ||
8756 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8757 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8758 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8759 | display_thread_info (&threadinfo); | |
8760 | return result; | |
8761 | } | |
8762 | ||
8763 | static void | |
fba45db2 | 8764 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8765 | { |
8766 | int athread = SAMPLE_THREAD; | |
8767 | threadref thread; | |
8768 | int set; | |
8769 | ||
8770 | int_to_threadref (&thread, athread); | |
8771 | printf_filtered ("Remote Threadinfo test\n"); | |
8772 | if (!get_and_display_threadinfo (&thread)) | |
8773 | printf_filtered ("FAIL cannot get thread info\n"); | |
8774 | } | |
8775 | ||
8776 | static int | |
fba45db2 | 8777 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8778 | { |
8779 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8780 | return get_and_display_threadinfo (ref); | |
8781 | } | |
8782 | ||
8783 | static void | |
fba45db2 | 8784 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8785 | { |
8786 | printf_filtered ("Remote Threadlist update test\n"); | |
8787 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8788 | } | |
8789 | ||
8790 | static void | |
8791 | init_remote_threadtests (void) | |
8792 | { | |
3e43a32a MS |
8793 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8794 | _("Fetch and print the remote list of " | |
8795 | "thread identifiers, one pkt only")); | |
c906108c | 8796 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8797 | _("Fetch and display info about one thread")); |
c906108c | 8798 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8799 | _("Test setting to a different thread")); |
c906108c | 8800 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8801 | _("Iterate through updating all remote thread info")); |
c906108c | 8802 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8803 | _(" Remote thread alive test ")); |
c906108c SS |
8804 | } |
8805 | ||
8806 | #endif /* 0 */ | |
8807 | ||
f3fb8c85 MS |
8808 | /* Convert a thread ID to a string. Returns the string in a static |
8809 | buffer. */ | |
8810 | ||
8811 | static char * | |
117de6a9 | 8812 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8813 | { |
79d7f229 | 8814 | static char buf[64]; |
82f73884 | 8815 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8816 | |
ecd0ada5 PA |
8817 | if (ptid_is_pid (ptid)) |
8818 | { | |
8819 | /* Printing an inferior target id. */ | |
8820 | ||
8821 | /* When multi-process extensions are off, there's no way in the | |
8822 | remote protocol to know the remote process id, if there's any | |
8823 | at all. There's one exception --- when we're connected with | |
8824 | target extended-remote, and we manually attached to a process | |
8825 | with "attach PID". We don't record anywhere a flag that | |
8826 | allows us to distinguish that case from the case of | |
8827 | connecting with extended-remote and the stub already being | |
8828 | attached to a process, and reporting yes to qAttached, hence | |
8829 | no smart special casing here. */ | |
8830 | if (!remote_multi_process_p (rs)) | |
8831 | { | |
8832 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8833 | return buf; | |
8834 | } | |
8835 | ||
8836 | return normal_pid_to_str (ptid); | |
82f73884 | 8837 | } |
ecd0ada5 | 8838 | else |
79d7f229 | 8839 | { |
ecd0ada5 PA |
8840 | if (ptid_equal (magic_null_ptid, ptid)) |
8841 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 8842 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
8843 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
8844 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8845 | else | |
8846 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8847 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8848 | return buf; |
8849 | } | |
f3fb8c85 MS |
8850 | } |
8851 | ||
38691318 KB |
8852 | /* Get the address of the thread local variable in OBJFILE which is |
8853 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8854 | ||
8855 | static CORE_ADDR | |
117de6a9 PA |
8856 | remote_get_thread_local_address (struct target_ops *ops, |
8857 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8858 | { |
444abaca | 8859 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8860 | { |
8861 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8862 | char *p = rs->buf; |
82f73884 | 8863 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8864 | enum packet_result result; |
38691318 KB |
8865 | |
8866 | strcpy (p, "qGetTLSAddr:"); | |
8867 | p += strlen (p); | |
82f73884 | 8868 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8869 | *p++ = ','; |
8870 | p += hexnumstr (p, offset); | |
8871 | *p++ = ','; | |
8872 | p += hexnumstr (p, lm); | |
8873 | *p++ = '\0'; | |
8874 | ||
6d820c5c DJ |
8875 | putpkt (rs->buf); |
8876 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8877 | result = packet_ok (rs->buf, |
8878 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8879 | if (result == PACKET_OK) |
38691318 KB |
8880 | { |
8881 | ULONGEST result; | |
8882 | ||
6d820c5c | 8883 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8884 | return result; |
8885 | } | |
571dd617 | 8886 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8887 | throw_error (TLS_GENERIC_ERROR, |
8888 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8889 | else |
109c3e39 AC |
8890 | throw_error (TLS_GENERIC_ERROR, |
8891 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8892 | } |
8893 | else | |
109c3e39 AC |
8894 | throw_error (TLS_GENERIC_ERROR, |
8895 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8896 | /* Not reached. */ |
8897 | return 0; | |
8898 | } | |
8899 | ||
711e434b PM |
8900 | /* Provide thread local base, i.e. Thread Information Block address. |
8901 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8902 | ||
8903 | int | |
8904 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
8905 | { | |
8906 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8907 | { | |
8908 | struct remote_state *rs = get_remote_state (); | |
8909 | char *p = rs->buf; | |
8910 | char *endp = rs->buf + get_remote_packet_size (); | |
8911 | enum packet_result result; | |
8912 | ||
8913 | strcpy (p, "qGetTIBAddr:"); | |
8914 | p += strlen (p); | |
8915 | p = write_ptid (p, endp, ptid); | |
8916 | *p++ = '\0'; | |
8917 | ||
8918 | putpkt (rs->buf); | |
8919 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8920 | result = packet_ok (rs->buf, | |
8921 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
8922 | if (result == PACKET_OK) | |
8923 | { | |
8924 | ULONGEST result; | |
8925 | ||
8926 | unpack_varlen_hex (rs->buf, &result); | |
8927 | if (addr) | |
8928 | *addr = (CORE_ADDR) result; | |
8929 | return 1; | |
8930 | } | |
8931 | else if (result == PACKET_UNKNOWN) | |
8932 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
8933 | else | |
8934 | error (_("Remote target failed to process qGetTIBAddr request")); | |
8935 | } | |
8936 | else | |
8937 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
8938 | /* Not reached. */ | |
8939 | return 0; | |
8940 | } | |
8941 | ||
29709017 DJ |
8942 | /* Support for inferring a target description based on the current |
8943 | architecture and the size of a 'g' packet. While the 'g' packet | |
8944 | can have any size (since optional registers can be left off the | |
8945 | end), some sizes are easily recognizable given knowledge of the | |
8946 | approximate architecture. */ | |
8947 | ||
8948 | struct remote_g_packet_guess | |
8949 | { | |
8950 | int bytes; | |
8951 | const struct target_desc *tdesc; | |
8952 | }; | |
8953 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
8954 | DEF_VEC_O(remote_g_packet_guess_s); | |
8955 | ||
8956 | struct remote_g_packet_data | |
8957 | { | |
8958 | VEC(remote_g_packet_guess_s) *guesses; | |
8959 | }; | |
8960 | ||
8961 | static struct gdbarch_data *remote_g_packet_data_handle; | |
8962 | ||
8963 | static void * | |
8964 | remote_g_packet_data_init (struct obstack *obstack) | |
8965 | { | |
8966 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
8967 | } | |
8968 | ||
8969 | void | |
8970 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
8971 | const struct target_desc *tdesc) | |
8972 | { | |
8973 | struct remote_g_packet_data *data | |
8974 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
8975 | struct remote_g_packet_guess new_guess, *guess; | |
8976 | int ix; | |
8977 | ||
8978 | gdb_assert (tdesc != NULL); | |
8979 | ||
8980 | for (ix = 0; | |
8981 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8982 | ix++) | |
8983 | if (guess->bytes == bytes) | |
8984 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8985 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
8986 | bytes); |
8987 | ||
8988 | new_guess.bytes = bytes; | |
8989 | new_guess.tdesc = tdesc; | |
8990 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
8991 | } | |
8992 | ||
d962ef82 DJ |
8993 | /* Return 1 if remote_read_description would do anything on this target |
8994 | and architecture, 0 otherwise. */ | |
8995 | ||
8996 | static int | |
8997 | remote_read_description_p (struct target_ops *target) | |
8998 | { | |
8999 | struct remote_g_packet_data *data | |
9000 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
9001 | ||
9002 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9003 | return 1; | |
9004 | ||
9005 | return 0; | |
9006 | } | |
9007 | ||
29709017 DJ |
9008 | static const struct target_desc * |
9009 | remote_read_description (struct target_ops *target) | |
9010 | { | |
9011 | struct remote_g_packet_data *data | |
1cf3db46 | 9012 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 9013 | |
d962ef82 DJ |
9014 | /* Do not try this during initial connection, when we do not know |
9015 | whether there is a running but stopped thread. */ | |
9016 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9017 | return NULL; | |
9018 | ||
29709017 DJ |
9019 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9020 | { | |
9021 | struct remote_g_packet_guess *guess; | |
9022 | int ix; | |
9023 | int bytes = send_g_packet (); | |
9024 | ||
9025 | for (ix = 0; | |
9026 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9027 | ix++) | |
9028 | if (guess->bytes == bytes) | |
9029 | return guess->tdesc; | |
9030 | ||
9031 | /* We discard the g packet. A minor optimization would be to | |
9032 | hold on to it, and fill the register cache once we have selected | |
9033 | an architecture, but it's too tricky to do safely. */ | |
9034 | } | |
9035 | ||
9036 | return NULL; | |
9037 | } | |
9038 | ||
a6b151f1 DJ |
9039 | /* Remote file transfer support. This is host-initiated I/O, not |
9040 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9041 | ||
9042 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9043 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9044 | decrease *LEFT. Otherwise raise an error. */ | |
9045 | ||
9046 | static void | |
9047 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9048 | { | |
9049 | int len = strlen (string); | |
9050 | ||
9051 | if (len > *left) | |
9052 | error (_("Packet too long for target.")); | |
9053 | ||
9054 | memcpy (*buffer, string, len); | |
9055 | *buffer += len; | |
9056 | *left -= len; | |
9057 | ||
9058 | /* NUL-terminate the buffer as a convenience, if there is | |
9059 | room. */ | |
9060 | if (*left) | |
9061 | **buffer = '\0'; | |
9062 | } | |
9063 | ||
9064 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9065 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9066 | decrease *LEFT. Otherwise raise an error. */ | |
9067 | ||
9068 | static void | |
9069 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9070 | int len) | |
9071 | { | |
9072 | if (2 * len > *left) | |
9073 | error (_("Packet too long for target.")); | |
9074 | ||
9075 | bin2hex (bytes, *buffer, len); | |
9076 | *buffer += 2 * len; | |
9077 | *left -= 2 * len; | |
9078 | ||
9079 | /* NUL-terminate the buffer as a convenience, if there is | |
9080 | room. */ | |
9081 | if (*left) | |
9082 | **buffer = '\0'; | |
9083 | } | |
9084 | ||
9085 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9086 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9087 | decrease *LEFT. Otherwise raise an error. */ | |
9088 | ||
9089 | static void | |
9090 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9091 | { | |
9092 | int len = hexnumlen (value); | |
9093 | ||
9094 | if (len > *left) | |
9095 | error (_("Packet too long for target.")); | |
9096 | ||
9097 | hexnumstr (*buffer, value); | |
9098 | *buffer += len; | |
9099 | *left -= len; | |
9100 | ||
9101 | /* NUL-terminate the buffer as a convenience, if there is | |
9102 | room. */ | |
9103 | if (*left) | |
9104 | **buffer = '\0'; | |
9105 | } | |
9106 | ||
9107 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9108 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9109 | was included, and *ATTACHMENT to point to the start of the annex | |
9110 | if any. The length of the packet isn't needed here; there may | |
9111 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9112 | ||
9113 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9114 | -1 is returned, the other variables may not be initialized. */ | |
9115 | ||
9116 | static int | |
9117 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9118 | int *remote_errno, char **attachment) | |
9119 | { | |
9120 | char *p, *p2; | |
9121 | ||
9122 | *remote_errno = 0; | |
9123 | *attachment = NULL; | |
9124 | ||
9125 | if (buffer[0] != 'F') | |
9126 | return -1; | |
9127 | ||
9128 | errno = 0; | |
9129 | *retcode = strtol (&buffer[1], &p, 16); | |
9130 | if (errno != 0 || p == &buffer[1]) | |
9131 | return -1; | |
9132 | ||
9133 | /* Check for ",errno". */ | |
9134 | if (*p == ',') | |
9135 | { | |
9136 | errno = 0; | |
9137 | *remote_errno = strtol (p + 1, &p2, 16); | |
9138 | if (errno != 0 || p + 1 == p2) | |
9139 | return -1; | |
9140 | p = p2; | |
9141 | } | |
9142 | ||
9143 | /* Check for ";attachment". If there is no attachment, the | |
9144 | packet should end here. */ | |
9145 | if (*p == ';') | |
9146 | { | |
9147 | *attachment = p + 1; | |
9148 | return 0; | |
9149 | } | |
9150 | else if (*p == '\0') | |
9151 | return 0; | |
9152 | else | |
9153 | return -1; | |
9154 | } | |
9155 | ||
9156 | /* Send a prepared I/O packet to the target and read its response. | |
9157 | The prepared packet is in the global RS->BUF before this function | |
9158 | is called, and the answer is there when we return. | |
9159 | ||
9160 | COMMAND_BYTES is the length of the request to send, which may include | |
9161 | binary data. WHICH_PACKET is the packet configuration to check | |
9162 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9163 | is set to the error number and -1 is returned. Otherwise the value | |
9164 | returned by the function is returned. | |
9165 | ||
9166 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9167 | attachment is expected; an error will be reported if there's a | |
9168 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9169 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9170 | attachment's length. */ | |
9171 | ||
9172 | static int | |
9173 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9174 | int *remote_errno, char **attachment, | |
9175 | int *attachment_len) | |
9176 | { | |
9177 | struct remote_state *rs = get_remote_state (); | |
9178 | int ret, bytes_read; | |
9179 | char *attachment_tmp; | |
9180 | ||
f1838a98 UW |
9181 | if (!remote_desc |
9182 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9183 | { |
9184 | *remote_errno = FILEIO_ENOSYS; | |
9185 | return -1; | |
9186 | } | |
9187 | ||
9188 | putpkt_binary (rs->buf, command_bytes); | |
9189 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9190 | ||
9191 | /* If it timed out, something is wrong. Don't try to parse the | |
9192 | buffer. */ | |
9193 | if (bytes_read < 0) | |
9194 | { | |
9195 | *remote_errno = FILEIO_EINVAL; | |
9196 | return -1; | |
9197 | } | |
9198 | ||
9199 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9200 | { | |
9201 | case PACKET_ERROR: | |
9202 | *remote_errno = FILEIO_EINVAL; | |
9203 | return -1; | |
9204 | case PACKET_UNKNOWN: | |
9205 | *remote_errno = FILEIO_ENOSYS; | |
9206 | return -1; | |
9207 | case PACKET_OK: | |
9208 | break; | |
9209 | } | |
9210 | ||
9211 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9212 | &attachment_tmp)) | |
9213 | { | |
9214 | *remote_errno = FILEIO_EINVAL; | |
9215 | return -1; | |
9216 | } | |
9217 | ||
9218 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9219 | if ((attachment_tmp == NULL && attachment != NULL) | |
9220 | || (attachment_tmp != NULL && attachment == NULL)) | |
9221 | { | |
9222 | *remote_errno = FILEIO_EINVAL; | |
9223 | return -1; | |
9224 | } | |
9225 | ||
9226 | /* If an attachment was found, it must point into the packet buffer; | |
9227 | work out how many bytes there were. */ | |
9228 | if (attachment_tmp != NULL) | |
9229 | { | |
9230 | *attachment = attachment_tmp; | |
9231 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9232 | } | |
9233 | ||
9234 | return ret; | |
9235 | } | |
9236 | ||
9237 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9238 | remote file descriptor, or -1 if an error occurs (and set | |
9239 | *REMOTE_ERRNO). */ | |
9240 | ||
9241 | static int | |
9242 | remote_hostio_open (const char *filename, int flags, int mode, | |
9243 | int *remote_errno) | |
9244 | { | |
9245 | struct remote_state *rs = get_remote_state (); | |
9246 | char *p = rs->buf; | |
9247 | int left = get_remote_packet_size () - 1; | |
9248 | ||
9249 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9250 | ||
9251 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9252 | strlen (filename)); | |
9253 | remote_buffer_add_string (&p, &left, ","); | |
9254 | ||
9255 | remote_buffer_add_int (&p, &left, flags); | |
9256 | remote_buffer_add_string (&p, &left, ","); | |
9257 | ||
9258 | remote_buffer_add_int (&p, &left, mode); | |
9259 | ||
9260 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9261 | remote_errno, NULL, NULL); | |
9262 | } | |
9263 | ||
9264 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9265 | Return the number of bytes written, or -1 if an error occurs (and | |
9266 | set *REMOTE_ERRNO). */ | |
9267 | ||
9268 | static int | |
9269 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9270 | ULONGEST offset, int *remote_errno) | |
9271 | { | |
9272 | struct remote_state *rs = get_remote_state (); | |
9273 | char *p = rs->buf; | |
9274 | int left = get_remote_packet_size (); | |
9275 | int out_len; | |
9276 | ||
9277 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9278 | ||
9279 | remote_buffer_add_int (&p, &left, fd); | |
9280 | remote_buffer_add_string (&p, &left, ","); | |
9281 | ||
9282 | remote_buffer_add_int (&p, &left, offset); | |
9283 | remote_buffer_add_string (&p, &left, ","); | |
9284 | ||
9285 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9286 | get_remote_packet_size () - (p - rs->buf)); | |
9287 | ||
9288 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9289 | remote_errno, NULL, NULL); | |
9290 | } | |
9291 | ||
9292 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9293 | Return the number of bytes read, or -1 if an error occurs (and | |
9294 | set *REMOTE_ERRNO). */ | |
9295 | ||
9296 | static int | |
9297 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9298 | ULONGEST offset, int *remote_errno) | |
9299 | { | |
9300 | struct remote_state *rs = get_remote_state (); | |
9301 | char *p = rs->buf; | |
9302 | char *attachment; | |
9303 | int left = get_remote_packet_size (); | |
9304 | int ret, attachment_len; | |
9305 | int read_len; | |
9306 | ||
9307 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9308 | ||
9309 | remote_buffer_add_int (&p, &left, fd); | |
9310 | remote_buffer_add_string (&p, &left, ","); | |
9311 | ||
9312 | remote_buffer_add_int (&p, &left, len); | |
9313 | remote_buffer_add_string (&p, &left, ","); | |
9314 | ||
9315 | remote_buffer_add_int (&p, &left, offset); | |
9316 | ||
9317 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9318 | remote_errno, &attachment, | |
9319 | &attachment_len); | |
9320 | ||
9321 | if (ret < 0) | |
9322 | return ret; | |
9323 | ||
9324 | read_len = remote_unescape_input (attachment, attachment_len, | |
9325 | read_buf, len); | |
9326 | if (read_len != ret) | |
9327 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9328 | ||
9329 | return ret; | |
9330 | } | |
9331 | ||
9332 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9333 | (and set *REMOTE_ERRNO). */ | |
9334 | ||
9335 | static int | |
9336 | remote_hostio_close (int fd, int *remote_errno) | |
9337 | { | |
9338 | struct remote_state *rs = get_remote_state (); | |
9339 | char *p = rs->buf; | |
9340 | int left = get_remote_packet_size () - 1; | |
9341 | ||
9342 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9343 | ||
9344 | remote_buffer_add_int (&p, &left, fd); | |
9345 | ||
9346 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9347 | remote_errno, NULL, NULL); | |
9348 | } | |
9349 | ||
9350 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9351 | occurs (and set *REMOTE_ERRNO). */ | |
9352 | ||
9353 | static int | |
9354 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9355 | { | |
9356 | struct remote_state *rs = get_remote_state (); | |
9357 | char *p = rs->buf; | |
9358 | int left = get_remote_packet_size () - 1; | |
9359 | ||
9360 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9361 | ||
9362 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9363 | strlen (filename)); | |
9364 | ||
9365 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9366 | remote_errno, NULL, NULL); | |
9367 | } | |
9368 | ||
b9e7b9c3 UW |
9369 | /* Read value of symbolic link FILENAME on the remote target. Return |
9370 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9371 | occurs (and set *REMOTE_ERRNO). */ | |
9372 | ||
9373 | static char * | |
9374 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9375 | { | |
9376 | struct remote_state *rs = get_remote_state (); | |
9377 | char *p = rs->buf; | |
9378 | char *attachment; | |
9379 | int left = get_remote_packet_size (); | |
9380 | int len, attachment_len; | |
9381 | int read_len; | |
9382 | char *ret; | |
9383 | ||
9384 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9385 | ||
9386 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9387 | strlen (filename)); | |
9388 | ||
9389 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9390 | remote_errno, &attachment, | |
9391 | &attachment_len); | |
9392 | ||
9393 | if (len < 0) | |
9394 | return NULL; | |
9395 | ||
9396 | ret = xmalloc (len + 1); | |
9397 | ||
9398 | read_len = remote_unescape_input (attachment, attachment_len, | |
9399 | ret, len); | |
9400 | if (read_len != len) | |
9401 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9402 | ||
9403 | ret[len] = '\0'; | |
9404 | return ret; | |
9405 | } | |
9406 | ||
a6b151f1 DJ |
9407 | static int |
9408 | remote_fileio_errno_to_host (int errnum) | |
9409 | { | |
9410 | switch (errnum) | |
9411 | { | |
9412 | case FILEIO_EPERM: | |
9413 | return EPERM; | |
9414 | case FILEIO_ENOENT: | |
9415 | return ENOENT; | |
9416 | case FILEIO_EINTR: | |
9417 | return EINTR; | |
9418 | case FILEIO_EIO: | |
9419 | return EIO; | |
9420 | case FILEIO_EBADF: | |
9421 | return EBADF; | |
9422 | case FILEIO_EACCES: | |
9423 | return EACCES; | |
9424 | case FILEIO_EFAULT: | |
9425 | return EFAULT; | |
9426 | case FILEIO_EBUSY: | |
9427 | return EBUSY; | |
9428 | case FILEIO_EEXIST: | |
9429 | return EEXIST; | |
9430 | case FILEIO_ENODEV: | |
9431 | return ENODEV; | |
9432 | case FILEIO_ENOTDIR: | |
9433 | return ENOTDIR; | |
9434 | case FILEIO_EISDIR: | |
9435 | return EISDIR; | |
9436 | case FILEIO_EINVAL: | |
9437 | return EINVAL; | |
9438 | case FILEIO_ENFILE: | |
9439 | return ENFILE; | |
9440 | case FILEIO_EMFILE: | |
9441 | return EMFILE; | |
9442 | case FILEIO_EFBIG: | |
9443 | return EFBIG; | |
9444 | case FILEIO_ENOSPC: | |
9445 | return ENOSPC; | |
9446 | case FILEIO_ESPIPE: | |
9447 | return ESPIPE; | |
9448 | case FILEIO_EROFS: | |
9449 | return EROFS; | |
9450 | case FILEIO_ENOSYS: | |
9451 | return ENOSYS; | |
9452 | case FILEIO_ENAMETOOLONG: | |
9453 | return ENAMETOOLONG; | |
9454 | } | |
9455 | return -1; | |
9456 | } | |
9457 | ||
9458 | static char * | |
9459 | remote_hostio_error (int errnum) | |
9460 | { | |
9461 | int host_error = remote_fileio_errno_to_host (errnum); | |
9462 | ||
9463 | if (host_error == -1) | |
9464 | error (_("Unknown remote I/O error %d"), errnum); | |
9465 | else | |
9466 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9467 | } | |
9468 | ||
a6b151f1 DJ |
9469 | static void |
9470 | remote_hostio_close_cleanup (void *opaque) | |
9471 | { | |
9472 | int fd = *(int *) opaque; | |
9473 | int remote_errno; | |
9474 | ||
9475 | remote_hostio_close (fd, &remote_errno); | |
9476 | } | |
9477 | ||
f1838a98 UW |
9478 | |
9479 | static void * | |
9480 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9481 | { | |
9482 | const char *filename = bfd_get_filename (abfd); | |
9483 | int fd, remote_errno; | |
9484 | int *stream; | |
9485 | ||
9486 | gdb_assert (remote_filename_p (filename)); | |
9487 | ||
9488 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9489 | if (fd == -1) | |
9490 | { | |
9491 | errno = remote_fileio_errno_to_host (remote_errno); | |
9492 | bfd_set_error (bfd_error_system_call); | |
9493 | return NULL; | |
9494 | } | |
9495 | ||
9496 | stream = xmalloc (sizeof (int)); | |
9497 | *stream = fd; | |
9498 | return stream; | |
9499 | } | |
9500 | ||
9501 | static int | |
9502 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9503 | { | |
9504 | int fd = *(int *)stream; | |
9505 | int remote_errno; | |
9506 | ||
9507 | xfree (stream); | |
9508 | ||
9509 | /* Ignore errors on close; these may happen if the remote | |
9510 | connection was already torn down. */ | |
9511 | remote_hostio_close (fd, &remote_errno); | |
9512 | ||
9513 | return 1; | |
9514 | } | |
9515 | ||
9516 | static file_ptr | |
9517 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9518 | file_ptr nbytes, file_ptr offset) | |
9519 | { | |
9520 | int fd = *(int *)stream; | |
9521 | int remote_errno; | |
9522 | file_ptr pos, bytes; | |
9523 | ||
9524 | pos = 0; | |
9525 | while (nbytes > pos) | |
9526 | { | |
9527 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9528 | offset + pos, &remote_errno); | |
9529 | if (bytes == 0) | |
9530 | /* Success, but no bytes, means end-of-file. */ | |
9531 | break; | |
9532 | if (bytes == -1) | |
9533 | { | |
9534 | errno = remote_fileio_errno_to_host (remote_errno); | |
9535 | bfd_set_error (bfd_error_system_call); | |
9536 | return -1; | |
9537 | } | |
9538 | ||
9539 | pos += bytes; | |
9540 | } | |
9541 | ||
9542 | return pos; | |
9543 | } | |
9544 | ||
9545 | static int | |
9546 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9547 | { | |
9548 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9549 | sb->st_size = INT_MAX; | |
9550 | return 0; | |
9551 | } | |
9552 | ||
9553 | int | |
9554 | remote_filename_p (const char *filename) | |
9555 | { | |
9556 | return strncmp (filename, "remote:", 7) == 0; | |
9557 | } | |
9558 | ||
9559 | bfd * | |
9560 | remote_bfd_open (const char *remote_file, const char *target) | |
9561 | { | |
9562 | return bfd_openr_iovec (remote_file, target, | |
9563 | remote_bfd_iovec_open, NULL, | |
9564 | remote_bfd_iovec_pread, | |
9565 | remote_bfd_iovec_close, | |
9566 | remote_bfd_iovec_stat); | |
9567 | } | |
9568 | ||
a6b151f1 DJ |
9569 | void |
9570 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9571 | { | |
9572 | struct cleanup *back_to, *close_cleanup; | |
9573 | int retcode, fd, remote_errno, bytes, io_size; | |
9574 | FILE *file; | |
9575 | gdb_byte *buffer; | |
9576 | int bytes_in_buffer; | |
9577 | int saw_eof; | |
9578 | ULONGEST offset; | |
9579 | ||
9580 | if (!remote_desc) | |
9581 | error (_("command can only be used with remote target")); | |
9582 | ||
9583 | file = fopen (local_file, "rb"); | |
9584 | if (file == NULL) | |
9585 | perror_with_name (local_file); | |
7c8a8b04 | 9586 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9587 | |
9588 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9589 | | FILEIO_O_TRUNC), | |
9590 | 0700, &remote_errno); | |
9591 | if (fd == -1) | |
9592 | remote_hostio_error (remote_errno); | |
9593 | ||
9594 | /* Send up to this many bytes at once. They won't all fit in the | |
9595 | remote packet limit, so we'll transfer slightly fewer. */ | |
9596 | io_size = get_remote_packet_size (); | |
9597 | buffer = xmalloc (io_size); | |
9598 | make_cleanup (xfree, buffer); | |
9599 | ||
9600 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9601 | ||
9602 | bytes_in_buffer = 0; | |
9603 | saw_eof = 0; | |
9604 | offset = 0; | |
9605 | while (bytes_in_buffer || !saw_eof) | |
9606 | { | |
9607 | if (!saw_eof) | |
9608 | { | |
3e43a32a MS |
9609 | bytes = fread (buffer + bytes_in_buffer, 1, |
9610 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9611 | file); |
9612 | if (bytes == 0) | |
9613 | { | |
9614 | if (ferror (file)) | |
9615 | error (_("Error reading %s."), local_file); | |
9616 | else | |
9617 | { | |
9618 | /* EOF. Unless there is something still in the | |
9619 | buffer from the last iteration, we are done. */ | |
9620 | saw_eof = 1; | |
9621 | if (bytes_in_buffer == 0) | |
9622 | break; | |
9623 | } | |
9624 | } | |
9625 | } | |
9626 | else | |
9627 | bytes = 0; | |
9628 | ||
9629 | bytes += bytes_in_buffer; | |
9630 | bytes_in_buffer = 0; | |
9631 | ||
3e43a32a MS |
9632 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9633 | offset, &remote_errno); | |
a6b151f1 DJ |
9634 | |
9635 | if (retcode < 0) | |
9636 | remote_hostio_error (remote_errno); | |
9637 | else if (retcode == 0) | |
9638 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9639 | else if (retcode < bytes) | |
9640 | { | |
9641 | /* Short write. Save the rest of the read data for the next | |
9642 | write. */ | |
9643 | bytes_in_buffer = bytes - retcode; | |
9644 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9645 | } | |
9646 | ||
9647 | offset += retcode; | |
9648 | } | |
9649 | ||
9650 | discard_cleanups (close_cleanup); | |
9651 | if (remote_hostio_close (fd, &remote_errno)) | |
9652 | remote_hostio_error (remote_errno); | |
9653 | ||
9654 | if (from_tty) | |
9655 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9656 | do_cleanups (back_to); | |
9657 | } | |
9658 | ||
9659 | void | |
9660 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9661 | { | |
9662 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9663 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9664 | FILE *file; |
9665 | gdb_byte *buffer; | |
9666 | ULONGEST offset; | |
9667 | ||
9668 | if (!remote_desc) | |
9669 | error (_("command can only be used with remote target")); | |
9670 | ||
9671 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9672 | if (fd == -1) | |
9673 | remote_hostio_error (remote_errno); | |
9674 | ||
9675 | file = fopen (local_file, "wb"); | |
9676 | if (file == NULL) | |
9677 | perror_with_name (local_file); | |
7c8a8b04 | 9678 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9679 | |
9680 | /* Send up to this many bytes at once. They won't all fit in the | |
9681 | remote packet limit, so we'll transfer slightly fewer. */ | |
9682 | io_size = get_remote_packet_size (); | |
9683 | buffer = xmalloc (io_size); | |
9684 | make_cleanup (xfree, buffer); | |
9685 | ||
9686 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9687 | ||
9688 | offset = 0; | |
9689 | while (1) | |
9690 | { | |
9691 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9692 | if (bytes == 0) | |
9693 | /* Success, but no bytes, means end-of-file. */ | |
9694 | break; | |
9695 | if (bytes == -1) | |
9696 | remote_hostio_error (remote_errno); | |
9697 | ||
9698 | offset += bytes; | |
9699 | ||
9700 | bytes = fwrite (buffer, 1, bytes, file); | |
9701 | if (bytes == 0) | |
9702 | perror_with_name (local_file); | |
9703 | } | |
9704 | ||
9705 | discard_cleanups (close_cleanup); | |
9706 | if (remote_hostio_close (fd, &remote_errno)) | |
9707 | remote_hostio_error (remote_errno); | |
9708 | ||
9709 | if (from_tty) | |
9710 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9711 | do_cleanups (back_to); | |
9712 | } | |
9713 | ||
9714 | void | |
9715 | remote_file_delete (const char *remote_file, int from_tty) | |
9716 | { | |
9717 | int retcode, remote_errno; | |
9718 | ||
9719 | if (!remote_desc) | |
9720 | error (_("command can only be used with remote target")); | |
9721 | ||
9722 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9723 | if (retcode == -1) | |
9724 | remote_hostio_error (remote_errno); | |
9725 | ||
9726 | if (from_tty) | |
9727 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9728 | } | |
9729 | ||
9730 | static void | |
9731 | remote_put_command (char *args, int from_tty) | |
9732 | { | |
9733 | struct cleanup *back_to; | |
9734 | char **argv; | |
9735 | ||
d1a41061 PP |
9736 | if (args == NULL) |
9737 | error_no_arg (_("file to put")); | |
9738 | ||
9739 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9740 | back_to = make_cleanup_freeargv (argv); |
9741 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9742 | error (_("Invalid parameters to remote put")); | |
9743 | ||
9744 | remote_file_put (argv[0], argv[1], from_tty); | |
9745 | ||
9746 | do_cleanups (back_to); | |
9747 | } | |
9748 | ||
9749 | static void | |
9750 | remote_get_command (char *args, int from_tty) | |
9751 | { | |
9752 | struct cleanup *back_to; | |
9753 | char **argv; | |
9754 | ||
d1a41061 PP |
9755 | if (args == NULL) |
9756 | error_no_arg (_("file to get")); | |
9757 | ||
9758 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9759 | back_to = make_cleanup_freeargv (argv); |
9760 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9761 | error (_("Invalid parameters to remote get")); | |
9762 | ||
9763 | remote_file_get (argv[0], argv[1], from_tty); | |
9764 | ||
9765 | do_cleanups (back_to); | |
9766 | } | |
9767 | ||
9768 | static void | |
9769 | remote_delete_command (char *args, int from_tty) | |
9770 | { | |
9771 | struct cleanup *back_to; | |
9772 | char **argv; | |
9773 | ||
d1a41061 PP |
9774 | if (args == NULL) |
9775 | error_no_arg (_("file to delete")); | |
9776 | ||
9777 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9778 | back_to = make_cleanup_freeargv (argv); |
9779 | if (argv[0] == NULL || argv[1] != NULL) | |
9780 | error (_("Invalid parameters to remote delete")); | |
9781 | ||
9782 | remote_file_delete (argv[0], from_tty); | |
9783 | ||
9784 | do_cleanups (back_to); | |
9785 | } | |
9786 | ||
9787 | static void | |
9788 | remote_command (char *args, int from_tty) | |
9789 | { | |
9790 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9791 | } | |
9792 | ||
b2175913 MS |
9793 | static int |
9794 | remote_can_execute_reverse (void) | |
9795 | { | |
40ab02ce MS |
9796 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9797 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9798 | return 1; | |
9799 | else | |
9800 | return 0; | |
b2175913 MS |
9801 | } |
9802 | ||
74531fed PA |
9803 | static int |
9804 | remote_supports_non_stop (void) | |
9805 | { | |
9806 | return 1; | |
9807 | } | |
9808 | ||
03583c20 UW |
9809 | static int |
9810 | remote_supports_disable_randomization (void) | |
9811 | { | |
9812 | /* Only supported in extended mode. */ | |
9813 | return 0; | |
9814 | } | |
9815 | ||
8a305172 PA |
9816 | static int |
9817 | remote_supports_multi_process (void) | |
9818 | { | |
9819 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9820 | |
901f9912 UW |
9821 | /* Only extended-remote handles being attached to multiple |
9822 | processes, even though plain remote can use the multi-process | |
9823 | thread id extensions, so that GDB knows the target process's | |
9824 | PID. */ | |
9825 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
9826 | } |
9827 | ||
782b2b07 SS |
9828 | int |
9829 | remote_supports_cond_tracepoints (void) | |
9830 | { | |
9831 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9832 | |
782b2b07 SS |
9833 | return rs->cond_tracepoints; |
9834 | } | |
9835 | ||
7a697b8d SS |
9836 | int |
9837 | remote_supports_fast_tracepoints (void) | |
9838 | { | |
9839 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9840 | |
7a697b8d SS |
9841 | return rs->fast_tracepoints; |
9842 | } | |
9843 | ||
0fb4aa4b PA |
9844 | static int |
9845 | remote_supports_static_tracepoints (void) | |
9846 | { | |
9847 | struct remote_state *rs = get_remote_state (); | |
9848 | ||
9849 | return rs->static_tracepoints; | |
9850 | } | |
9851 | ||
1e4d1764 YQ |
9852 | static int |
9853 | remote_supports_install_in_trace (void) | |
9854 | { | |
9855 | struct remote_state *rs = get_remote_state (); | |
9856 | ||
9857 | return rs->install_in_trace; | |
9858 | } | |
9859 | ||
d248b706 KY |
9860 | static int |
9861 | remote_supports_enable_disable_tracepoint (void) | |
9862 | { | |
9863 | struct remote_state *rs = get_remote_state (); | |
9864 | ||
9865 | return rs->enable_disable_tracepoints; | |
9866 | } | |
9867 | ||
3065dfb6 SS |
9868 | static int |
9869 | remote_supports_string_tracing (void) | |
9870 | { | |
9871 | struct remote_state *rs = get_remote_state (); | |
9872 | ||
9873 | return rs->string_tracing; | |
9874 | } | |
9875 | ||
35b1e5cc | 9876 | static void |
ad91cd99 | 9877 | remote_trace_init (void) |
35b1e5cc SS |
9878 | { |
9879 | putpkt ("QTinit"); | |
9880 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9881 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9882 | error (_("Target does not support this command.")); |
9883 | } | |
9884 | ||
9885 | static void free_actions_list (char **actions_list); | |
9886 | static void free_actions_list_cleanup_wrapper (void *); | |
9887 | static void | |
9888 | free_actions_list_cleanup_wrapper (void *al) | |
9889 | { | |
9890 | free_actions_list (al); | |
9891 | } | |
9892 | ||
9893 | static void | |
9894 | free_actions_list (char **actions_list) | |
9895 | { | |
9896 | int ndx; | |
9897 | ||
9898 | if (actions_list == 0) | |
9899 | return; | |
9900 | ||
9901 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9902 | xfree (actions_list[ndx]); | |
9903 | ||
9904 | xfree (actions_list); | |
9905 | } | |
9906 | ||
409873ef SS |
9907 | /* Recursive routine to walk through command list including loops, and |
9908 | download packets for each command. */ | |
9909 | ||
9910 | static void | |
9911 | remote_download_command_source (int num, ULONGEST addr, | |
9912 | struct command_line *cmds) | |
9913 | { | |
9914 | struct remote_state *rs = get_remote_state (); | |
9915 | struct command_line *cmd; | |
9916 | ||
9917 | for (cmd = cmds; cmd; cmd = cmd->next) | |
9918 | { | |
0df8b418 | 9919 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9920 | strcpy (rs->buf, "QTDPsrc:"); |
9921 | encode_source_string (num, addr, "cmd", cmd->line, | |
9922 | rs->buf + strlen (rs->buf), | |
9923 | rs->buf_size - strlen (rs->buf)); | |
9924 | putpkt (rs->buf); | |
9925 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9926 | if (strcmp (target_buf, "OK")) | |
9927 | warning (_("Target does not support source download.")); | |
9928 | ||
9929 | if (cmd->control_type == while_control | |
9930 | || cmd->control_type == while_stepping_control) | |
9931 | { | |
9932 | remote_download_command_source (num, addr, *cmd->body_list); | |
9933 | ||
0df8b418 | 9934 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9935 | strcpy (rs->buf, "QTDPsrc:"); |
9936 | encode_source_string (num, addr, "cmd", "end", | |
9937 | rs->buf + strlen (rs->buf), | |
9938 | rs->buf_size - strlen (rs->buf)); | |
9939 | putpkt (rs->buf); | |
9940 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9941 | if (strcmp (target_buf, "OK")) | |
9942 | warning (_("Target does not support source download.")); | |
9943 | } | |
9944 | } | |
9945 | } | |
9946 | ||
35b1e5cc | 9947 | static void |
e8ba3115 | 9948 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 9949 | { |
e8ba3115 | 9950 | |
35b1e5cc | 9951 | CORE_ADDR tpaddr; |
409873ef | 9952 | char addrbuf[40]; |
35b1e5cc SS |
9953 | char buf[2048]; |
9954 | char **tdp_actions; | |
9955 | char **stepping_actions; | |
9956 | int ndx; | |
9957 | struct cleanup *old_chain = NULL; | |
9958 | struct agent_expr *aexpr; | |
9959 | struct cleanup *aexpr_chain = NULL; | |
9960 | char *pkt; | |
e8ba3115 | 9961 | struct breakpoint *b = loc->owner; |
d9b3f62e | 9962 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 9963 | |
e8ba3115 YQ |
9964 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
9965 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
9966 | tdp_actions); | |
9967 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
9968 | stepping_actions); | |
9969 | ||
9970 | tpaddr = loc->address; | |
9971 | sprintf_vma (addrbuf, tpaddr); | |
9972 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number, | |
9973 | addrbuf, /* address */ | |
9974 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
9975 | t->step_count, t->pass_count); | |
9976 | /* Fast tracepoints are mostly handled by the target, but we can | |
9977 | tell the target how big of an instruction block should be moved | |
9978 | around. */ | |
9979 | if (b->type == bp_fast_tracepoint) | |
9980 | { | |
9981 | /* Only test for support at download time; we may not know | |
9982 | target capabilities at definition time. */ | |
9983 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 9984 | { |
e8ba3115 | 9985 | int isize; |
35b1e5cc | 9986 | |
e8ba3115 YQ |
9987 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
9988 | tpaddr, &isize, NULL)) | |
9989 | sprintf (buf + strlen (buf), ":F%x", isize); | |
35b1e5cc | 9990 | else |
e8ba3115 YQ |
9991 | /* If it passed validation at definition but fails now, |
9992 | something is very wrong. */ | |
9993 | internal_error (__FILE__, __LINE__, | |
9994 | _("Fast tracepoint not " | |
9995 | "valid during download")); | |
35b1e5cc | 9996 | } |
e8ba3115 YQ |
9997 | else |
9998 | /* Fast tracepoints are functionally identical to regular | |
9999 | tracepoints, so don't take lack of support as a reason to | |
10000 | give up on the trace run. */ | |
10001 | warning (_("Target does not support fast tracepoints, " | |
10002 | "downloading %d as regular tracepoint"), b->number); | |
10003 | } | |
10004 | else if (b->type == bp_static_tracepoint) | |
10005 | { | |
10006 | /* Only test for support at download time; we may not know | |
10007 | target capabilities at definition time. */ | |
10008 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10009 | { |
e8ba3115 | 10010 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10011 | |
e8ba3115 YQ |
10012 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10013 | strcat (buf, ":S"); | |
0fb4aa4b | 10014 | else |
e8ba3115 | 10015 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10016 | } |
e8ba3115 YQ |
10017 | else |
10018 | /* Fast tracepoints are functionally identical to regular | |
10019 | tracepoints, so don't take lack of support as a reason | |
10020 | to give up on the trace run. */ | |
10021 | error (_("Target does not support static tracepoints")); | |
10022 | } | |
10023 | /* If the tracepoint has a conditional, make it into an agent | |
10024 | expression and append to the definition. */ | |
10025 | if (loc->cond) | |
10026 | { | |
10027 | /* Only test support at download time, we may not know target | |
10028 | capabilities at definition time. */ | |
10029 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10030 | { |
e8ba3115 YQ |
10031 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10032 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
10033 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
10034 | pkt = buf + strlen (buf); | |
10035 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10036 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10037 | *pkt = '\0'; | |
10038 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10039 | } |
e8ba3115 YQ |
10040 | else |
10041 | warning (_("Target does not support conditional tracepoints, " | |
10042 | "ignoring tp %d cond"), b->number); | |
10043 | } | |
35b1e5cc | 10044 | |
d9b3f62e | 10045 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10046 | strcat (buf, "-"); |
10047 | putpkt (buf); | |
10048 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10049 | if (strcmp (target_buf, "OK")) | |
10050 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10051 | |
e8ba3115 YQ |
10052 | /* do_single_steps (t); */ |
10053 | if (tdp_actions) | |
10054 | { | |
10055 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10056 | { |
e8ba3115 YQ |
10057 | QUIT; /* Allow user to bail out with ^C. */ |
10058 | sprintf (buf, "QTDP:-%x:%s:%s%c", | |
10059 | b->number, addrbuf, /* address */ | |
10060 | tdp_actions[ndx], | |
10061 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10062 | ? '-' : 0)); | |
10063 | putpkt (buf); | |
10064 | remote_get_noisy_reply (&target_buf, | |
10065 | &target_buf_size); | |
10066 | if (strcmp (target_buf, "OK")) | |
10067 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10068 | } |
e8ba3115 YQ |
10069 | } |
10070 | if (stepping_actions) | |
10071 | { | |
10072 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10073 | { |
e8ba3115 YQ |
10074 | QUIT; /* Allow user to bail out with ^C. */ |
10075 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", | |
10076 | b->number, addrbuf, /* address */ | |
10077 | ((ndx == 0) ? "S" : ""), | |
10078 | stepping_actions[ndx], | |
10079 | (stepping_actions[ndx + 1] ? "-" : "")); | |
10080 | putpkt (buf); | |
10081 | remote_get_noisy_reply (&target_buf, | |
10082 | &target_buf_size); | |
10083 | if (strcmp (target_buf, "OK")) | |
10084 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10085 | } |
e8ba3115 | 10086 | } |
409873ef | 10087 | |
e8ba3115 YQ |
10088 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10089 | == PACKET_ENABLE) | |
10090 | { | |
10091 | if (b->addr_string) | |
409873ef | 10092 | { |
e8ba3115 YQ |
10093 | strcpy (buf, "QTDPsrc:"); |
10094 | encode_source_string (b->number, loc->address, | |
10095 | "at", b->addr_string, buf + strlen (buf), | |
10096 | 2048 - strlen (buf)); | |
409873ef | 10097 | |
e8ba3115 YQ |
10098 | putpkt (buf); |
10099 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10100 | if (strcmp (target_buf, "OK")) | |
10101 | warning (_("Target does not support source download.")); | |
409873ef | 10102 | } |
e8ba3115 YQ |
10103 | if (b->cond_string) |
10104 | { | |
10105 | strcpy (buf, "QTDPsrc:"); | |
10106 | encode_source_string (b->number, loc->address, | |
10107 | "cond", b->cond_string, buf + strlen (buf), | |
10108 | 2048 - strlen (buf)); | |
10109 | putpkt (buf); | |
10110 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10111 | if (strcmp (target_buf, "OK")) | |
10112 | warning (_("Target does not support source download.")); | |
10113 | } | |
10114 | remote_download_command_source (b->number, loc->address, | |
10115 | breakpoint_commands (b)); | |
35b1e5cc | 10116 | } |
e8ba3115 YQ |
10117 | |
10118 | do_cleanups (old_chain); | |
35b1e5cc SS |
10119 | } |
10120 | ||
1e4d1764 YQ |
10121 | static int |
10122 | remote_can_download_tracepoint (void) | |
10123 | { | |
10124 | struct trace_status *ts = current_trace_status (); | |
10125 | int status = remote_get_trace_status (ts); | |
10126 | ||
10127 | if (status == -1 || !ts->running_known || !ts->running) | |
10128 | return 0; | |
10129 | ||
10130 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10131 | installing tracepoint in trace, we have to return. */ | |
10132 | if (!remote_supports_install_in_trace ()) | |
10133 | return 0; | |
10134 | ||
10135 | return 1; | |
10136 | } | |
10137 | ||
10138 | ||
35b1e5cc SS |
10139 | static void |
10140 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10141 | { | |
10142 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10143 | char *p; |
35b1e5cc | 10144 | |
00bf0b85 SS |
10145 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
10146 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
10147 | p = rs->buf + strlen (rs->buf); | |
10148 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10149 | error (_("Trace state variable name too long for tsv definition packet")); | |
10150 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10151 | *p++ = '\0'; | |
35b1e5cc SS |
10152 | putpkt (rs->buf); |
10153 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10154 | if (*target_buf == '\0') |
10155 | error (_("Target does not support this command.")); | |
10156 | if (strcmp (target_buf, "OK") != 0) | |
10157 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10158 | } |
10159 | ||
d248b706 KY |
10160 | static void |
10161 | remote_enable_tracepoint (struct bp_location *location) | |
10162 | { | |
10163 | struct remote_state *rs = get_remote_state (); | |
10164 | char addr_buf[40]; | |
10165 | ||
10166 | sprintf_vma (addr_buf, location->address); | |
10167 | sprintf (rs->buf, "QTEnable:%x:%s", location->owner->number, addr_buf); | |
10168 | putpkt (rs->buf); | |
10169 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10170 | if (*rs->buf == '\0') | |
10171 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10172 | if (strcmp (rs->buf, "OK") != 0) | |
10173 | error (_("Error on target while enabling tracepoint.")); | |
10174 | } | |
10175 | ||
10176 | static void | |
10177 | remote_disable_tracepoint (struct bp_location *location) | |
10178 | { | |
10179 | struct remote_state *rs = get_remote_state (); | |
10180 | char addr_buf[40]; | |
10181 | ||
10182 | sprintf_vma (addr_buf, location->address); | |
10183 | sprintf (rs->buf, "QTDisable:%x:%s", location->owner->number, addr_buf); | |
10184 | putpkt (rs->buf); | |
10185 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10186 | if (*rs->buf == '\0') | |
10187 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10188 | if (strcmp (rs->buf, "OK") != 0) | |
10189 | error (_("Error on target while disabling tracepoint.")); | |
10190 | } | |
10191 | ||
35b1e5cc | 10192 | static void |
ad91cd99 | 10193 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10194 | { |
10195 | asection *s; | |
10196 | bfd_size_type size; | |
608bcef2 | 10197 | bfd_vma vma; |
35b1e5cc | 10198 | int anysecs = 0; |
c2fa21f1 | 10199 | int offset = 0; |
35b1e5cc SS |
10200 | |
10201 | if (!exec_bfd) | |
10202 | return; /* No information to give. */ | |
10203 | ||
10204 | strcpy (target_buf, "QTro"); | |
10205 | for (s = exec_bfd->sections; s; s = s->next) | |
10206 | { | |
10207 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10208 | int sec_length; |
35b1e5cc SS |
10209 | |
10210 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10211 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10212 | (s->flags & SEC_READONLY) == 0) |
10213 | continue; | |
10214 | ||
10215 | anysecs = 1; | |
608bcef2 | 10216 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 10217 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10218 | sprintf_vma (tmp1, vma); |
10219 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10220 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10221 | if (offset + sec_length + 1 > target_buf_size) | |
10222 | { | |
864ac8a7 HZ |
10223 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10224 | != PACKET_ENABLE) | |
10225 | warning (_("\ | |
c2fa21f1 HZ |
10226 | Too many sections for read-only sections definition packet.")); |
10227 | break; | |
10228 | } | |
10229 | sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2); | |
10230 | offset += sec_length; | |
35b1e5cc SS |
10231 | } |
10232 | if (anysecs) | |
10233 | { | |
10234 | putpkt (target_buf); | |
10235 | getpkt (&target_buf, &target_buf_size, 0); | |
10236 | } | |
10237 | } | |
10238 | ||
10239 | static void | |
ad91cd99 | 10240 | remote_trace_start (void) |
35b1e5cc SS |
10241 | { |
10242 | putpkt ("QTStart"); | |
10243 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10244 | if (*target_buf == '\0') |
10245 | error (_("Target does not support this command.")); | |
10246 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10247 | error (_("Bogus reply from target: %s"), target_buf); |
10248 | } | |
10249 | ||
10250 | static int | |
00bf0b85 | 10251 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10252 | { |
953b98d1 | 10253 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10254 | char *p = NULL; |
0df8b418 | 10255 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10256 | extern int trace_regblock_size; |
67f41397 | 10257 | volatile struct gdb_exception ex; |
a744cf53 | 10258 | |
00bf0b85 SS |
10259 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10260 | ||
35b1e5cc | 10261 | putpkt ("qTStatus"); |
67f41397 JK |
10262 | |
10263 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10264 | { | |
10265 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10266 | } | |
10267 | if (ex.reason < 0) | |
10268 | { | |
10269 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10270 | return -1; | |
10271 | } | |
00bf0b85 SS |
10272 | |
10273 | /* If the remote target doesn't do tracing, flag it. */ | |
10274 | if (*p == '\0') | |
10275 | return -1; | |
35b1e5cc | 10276 | |
00bf0b85 SS |
10277 | /* We're working with a live target. */ |
10278 | ts->from_file = 0; | |
10279 | ||
10280 | /* Set some defaults. */ | |
10281 | ts->running_known = 0; | |
10282 | ts->stop_reason = trace_stop_reason_unknown; | |
10283 | ts->traceframe_count = -1; | |
10284 | ts->buffer_free = 0; | |
10285 | ||
10286 | if (*p++ != 'T') | |
35b1e5cc SS |
10287 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10288 | ||
00bf0b85 SS |
10289 | parse_trace_status (p, ts); |
10290 | ||
10291 | return ts->running; | |
35b1e5cc SS |
10292 | } |
10293 | ||
f196051f SS |
10294 | void |
10295 | remote_get_tracepoint_status (struct breakpoint *bp, | |
10296 | struct uploaded_tp *utp) | |
10297 | { | |
10298 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10299 | char *reply; |
10300 | struct bp_location *loc; | |
10301 | struct tracepoint *tp = (struct tracepoint *) bp; | |
10302 | ||
10303 | if (tp) | |
10304 | { | |
10305 | tp->base.hit_count = 0; | |
10306 | tp->traceframe_usage = 0; | |
10307 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10308 | { | |
10309 | /* If the tracepoint was never downloaded, don't go asking for | |
10310 | any status. */ | |
10311 | if (tp->number_on_target == 0) | |
10312 | continue; | |
2bf50f6f JB |
10313 | sprintf (rs->buf, "qTP:%x:%s", tp->number_on_target, |
10314 | phex_nz (loc->address, 0)); | |
f196051f SS |
10315 | putpkt (rs->buf); |
10316 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10317 | if (reply && *reply) | |
10318 | { | |
10319 | if (*reply == 'V') | |
10320 | parse_tracepoint_status (reply + 1, bp, utp); | |
10321 | } | |
10322 | } | |
10323 | } | |
10324 | else if (utp) | |
10325 | { | |
10326 | utp->hit_count = 0; | |
10327 | utp->traceframe_usage = 0; | |
2bf50f6f | 10328 | sprintf (rs->buf, "qTP:%x:%s", utp->number, phex_nz (utp->addr, 0)); |
f196051f SS |
10329 | putpkt (rs->buf); |
10330 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10331 | if (reply && *reply) | |
10332 | { | |
10333 | if (*reply == 'V') | |
10334 | parse_tracepoint_status (reply + 1, bp, utp); | |
10335 | } | |
10336 | } | |
10337 | } | |
10338 | ||
35b1e5cc | 10339 | static void |
ad91cd99 | 10340 | remote_trace_stop (void) |
35b1e5cc SS |
10341 | { |
10342 | putpkt ("QTStop"); | |
10343 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10344 | if (*target_buf == '\0') |
10345 | error (_("Target does not support this command.")); | |
10346 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10347 | error (_("Bogus reply from target: %s"), target_buf); |
10348 | } | |
10349 | ||
10350 | static int | |
10351 | remote_trace_find (enum trace_find_type type, int num, | |
10352 | ULONGEST addr1, ULONGEST addr2, | |
10353 | int *tpp) | |
10354 | { | |
10355 | struct remote_state *rs = get_remote_state (); | |
10356 | char *p, *reply; | |
10357 | int target_frameno = -1, target_tracept = -1; | |
10358 | ||
e6e4e701 PA |
10359 | /* Lookups other than by absolute frame number depend on the current |
10360 | trace selected, so make sure it is correct on the remote end | |
10361 | first. */ | |
10362 | if (type != tfind_number) | |
10363 | set_remote_traceframe (); | |
10364 | ||
35b1e5cc SS |
10365 | p = rs->buf; |
10366 | strcpy (p, "QTFrame:"); | |
10367 | p = strchr (p, '\0'); | |
10368 | switch (type) | |
10369 | { | |
10370 | case tfind_number: | |
10371 | sprintf (p, "%x", num); | |
10372 | break; | |
10373 | case tfind_pc: | |
00bf0b85 | 10374 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10375 | break; |
10376 | case tfind_tp: | |
10377 | sprintf (p, "tdp:%x", num); | |
10378 | break; | |
10379 | case tfind_range: | |
00bf0b85 | 10380 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10381 | break; |
10382 | case tfind_outside: | |
00bf0b85 | 10383 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10384 | break; |
10385 | default: | |
9b20d036 | 10386 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10387 | } |
10388 | ||
10389 | putpkt (rs->buf); | |
10390 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10391 | if (*reply == '\0') |
10392 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10393 | |
10394 | while (reply && *reply) | |
10395 | switch (*reply) | |
10396 | { | |
10397 | case 'F': | |
f197e0f1 VP |
10398 | p = ++reply; |
10399 | target_frameno = (int) strtol (p, &reply, 16); | |
10400 | if (reply == p) | |
10401 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10402 | /* Don't update our remote traceframe number cache on failure |
10403 | to select a remote traceframe. */ | |
f197e0f1 VP |
10404 | if (target_frameno == -1) |
10405 | return -1; | |
35b1e5cc SS |
10406 | break; |
10407 | case 'T': | |
f197e0f1 VP |
10408 | p = ++reply; |
10409 | target_tracept = (int) strtol (p, &reply, 16); | |
10410 | if (reply == p) | |
10411 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10412 | break; |
10413 | case 'O': /* "OK"? */ | |
10414 | if (reply[1] == 'K' && reply[2] == '\0') | |
10415 | reply += 2; | |
10416 | else | |
10417 | error (_("Bogus reply from target: %s"), reply); | |
10418 | break; | |
10419 | default: | |
10420 | error (_("Bogus reply from target: %s"), reply); | |
10421 | } | |
10422 | if (tpp) | |
10423 | *tpp = target_tracept; | |
e6e4e701 PA |
10424 | |
10425 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10426 | return target_frameno; |
10427 | } | |
10428 | ||
10429 | static int | |
10430 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10431 | { | |
10432 | struct remote_state *rs = get_remote_state (); | |
10433 | char *reply; | |
10434 | ULONGEST uval; | |
10435 | ||
e6e4e701 PA |
10436 | set_remote_traceframe (); |
10437 | ||
35b1e5cc SS |
10438 | sprintf (rs->buf, "qTV:%x", tsvnum); |
10439 | putpkt (rs->buf); | |
10440 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10441 | if (reply && *reply) | |
10442 | { | |
10443 | if (*reply == 'V') | |
10444 | { | |
10445 | unpack_varlen_hex (reply + 1, &uval); | |
10446 | *val = (LONGEST) uval; | |
10447 | return 1; | |
10448 | } | |
10449 | } | |
10450 | return 0; | |
10451 | } | |
10452 | ||
00bf0b85 | 10453 | static int |
011aacb0 | 10454 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10455 | { |
10456 | struct remote_state *rs = get_remote_state (); | |
10457 | char *p, *reply; | |
10458 | ||
10459 | p = rs->buf; | |
10460 | strcpy (p, "QTSave:"); | |
10461 | p += strlen (p); | |
10462 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10463 | error (_("Remote file name too long for trace save packet")); | |
10464 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10465 | *p++ = '\0'; | |
10466 | putpkt (rs->buf); | |
ad91cd99 | 10467 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10468 | if (*reply == '\0') |
ad91cd99 PA |
10469 | error (_("Target does not support this command.")); |
10470 | if (strcmp (reply, "OK") != 0) | |
10471 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10472 | return 0; |
10473 | } | |
10474 | ||
10475 | /* This is basically a memory transfer, but needs to be its own packet | |
10476 | because we don't know how the target actually organizes its trace | |
10477 | memory, plus we want to be able to ask for as much as possible, but | |
10478 | not be unhappy if we don't get as much as we ask for. */ | |
10479 | ||
10480 | static LONGEST | |
10481 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10482 | { | |
10483 | struct remote_state *rs = get_remote_state (); | |
10484 | char *reply; | |
10485 | char *p; | |
10486 | int rslt; | |
10487 | ||
10488 | p = rs->buf; | |
10489 | strcpy (p, "qTBuffer:"); | |
10490 | p += strlen (p); | |
10491 | p += hexnumstr (p, offset); | |
10492 | *p++ = ','; | |
10493 | p += hexnumstr (p, len); | |
10494 | *p++ = '\0'; | |
10495 | ||
10496 | putpkt (rs->buf); | |
10497 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10498 | if (reply && *reply) | |
10499 | { | |
10500 | /* 'l' by itself means we're at the end of the buffer and | |
10501 | there is nothing more to get. */ | |
10502 | if (*reply == 'l') | |
10503 | return 0; | |
10504 | ||
10505 | /* Convert the reply into binary. Limit the number of bytes to | |
10506 | convert according to our passed-in buffer size, rather than | |
10507 | what was returned in the packet; if the target is | |
10508 | unexpectedly generous and gives us a bigger reply than we | |
10509 | asked for, we don't want to crash. */ | |
10510 | rslt = hex2bin (target_buf, buf, len); | |
10511 | return rslt; | |
10512 | } | |
10513 | ||
10514 | /* Something went wrong, flag as an error. */ | |
10515 | return -1; | |
10516 | } | |
10517 | ||
35b1e5cc SS |
10518 | static void |
10519 | remote_set_disconnected_tracing (int val) | |
10520 | { | |
10521 | struct remote_state *rs = get_remote_state (); | |
10522 | ||
33da3f1c SS |
10523 | if (rs->disconnected_tracing) |
10524 | { | |
ad91cd99 PA |
10525 | char *reply; |
10526 | ||
33da3f1c SS |
10527 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10528 | putpkt (rs->buf); | |
ad91cd99 PA |
10529 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10530 | if (*reply == '\0') | |
33da3f1c | 10531 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10532 | if (strcmp (reply, "OK") != 0) |
10533 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10534 | } |
10535 | else if (val) | |
10536 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10537 | } |
10538 | ||
dc146f7c VP |
10539 | static int |
10540 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10541 | { | |
10542 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10543 | |
dc146f7c VP |
10544 | if (info && info->private) |
10545 | return info->private->core; | |
10546 | return -1; | |
10547 | } | |
10548 | ||
4daf5ac0 SS |
10549 | static void |
10550 | remote_set_circular_trace_buffer (int val) | |
10551 | { | |
10552 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10553 | char *reply; |
4daf5ac0 SS |
10554 | |
10555 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10556 | putpkt (rs->buf); | |
ad91cd99 PA |
10557 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10558 | if (*reply == '\0') | |
4daf5ac0 | 10559 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10560 | if (strcmp (reply, "OK") != 0) |
10561 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10562 | } |
10563 | ||
b3b9301e PA |
10564 | static struct traceframe_info * |
10565 | remote_traceframe_info (void) | |
10566 | { | |
10567 | char *text; | |
10568 | ||
10569 | text = target_read_stralloc (¤t_target, | |
10570 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10571 | if (text != NULL) | |
10572 | { | |
10573 | struct traceframe_info *info; | |
10574 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10575 | ||
10576 | info = parse_traceframe_info (text); | |
10577 | do_cleanups (back_to); | |
10578 | return info; | |
10579 | } | |
10580 | ||
10581 | return NULL; | |
10582 | } | |
10583 | ||
405f8e94 SS |
10584 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10585 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10586 | if the packet is not supported, and 0 if the minimum instruction | |
10587 | length is unknown. */ | |
10588 | ||
10589 | static int | |
10590 | remote_get_min_fast_tracepoint_insn_len (void) | |
10591 | { | |
10592 | struct remote_state *rs = get_remote_state (); | |
10593 | char *reply; | |
10594 | ||
10595 | sprintf (rs->buf, "qTMinFTPILen"); | |
10596 | putpkt (rs->buf); | |
10597 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10598 | if (*reply == '\0') | |
10599 | return -1; | |
10600 | else | |
10601 | { | |
10602 | ULONGEST min_insn_len; | |
10603 | ||
10604 | unpack_varlen_hex (reply, &min_insn_len); | |
10605 | ||
10606 | return (int) min_insn_len; | |
10607 | } | |
10608 | } | |
10609 | ||
f196051f SS |
10610 | static int |
10611 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10612 | { | |
10613 | struct remote_state *rs = get_remote_state (); | |
10614 | char *reply; | |
10615 | char *buf = rs->buf; | |
10616 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10617 | int nbytes; | |
10618 | ||
10619 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10620 | if (user) | |
10621 | { | |
10622 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10623 | nbytes = bin2hex (user, buf, 0); | |
10624 | buf += 2 * nbytes; | |
10625 | *buf++ = ';'; | |
10626 | } | |
10627 | if (notes) | |
10628 | { | |
10629 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10630 | nbytes = bin2hex (notes, buf, 0); | |
10631 | buf += 2 * nbytes; | |
10632 | *buf++ = ';'; | |
10633 | } | |
10634 | if (stop_notes) | |
10635 | { | |
10636 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10637 | nbytes = bin2hex (stop_notes, buf, 0); | |
10638 | buf += 2 * nbytes; | |
10639 | *buf++ = ';'; | |
10640 | } | |
10641 | /* Ensure the buffer is terminated. */ | |
10642 | *buf = '\0'; | |
10643 | ||
10644 | putpkt (rs->buf); | |
10645 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10646 | if (*reply == '\0') | |
10647 | return 0; | |
10648 | ||
10649 | if (strcmp (reply, "OK") != 0) | |
10650 | error (_("Bogus reply from target: %s"), reply); | |
10651 | ||
10652 | return 1; | |
10653 | } | |
10654 | ||
c906108c | 10655 | static void |
fba45db2 | 10656 | init_remote_ops (void) |
c906108c | 10657 | { |
c5aa993b | 10658 | remote_ops.to_shortname = "remote"; |
c906108c | 10659 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10660 | remote_ops.to_doc = |
c906108c | 10661 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10662 | Specify the serial device it is connected to\n\ |
10663 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10664 | remote_ops.to_open = remote_open; |
10665 | remote_ops.to_close = remote_close; | |
c906108c | 10666 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10667 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10668 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10669 | remote_ops.to_wait = remote_wait; |
10670 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10671 | remote_ops.to_store_registers = remote_store_registers; | |
10672 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10673 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10674 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10675 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10676 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10677 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10678 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
10679 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
10680 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10681 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10682 | remote_ops.to_region_ok_for_hw_watchpoint |
10683 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10684 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10685 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10686 | remote_ops.to_kill = remote_kill; |
10687 | remote_ops.to_load = generic_load; | |
c906108c | 10688 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10689 | remote_ops.to_pass_signals = remote_pass_signals; |
c906108c | 10690 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10691 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10692 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10693 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10694 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10695 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10696 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10697 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10698 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10699 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10700 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10701 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10702 | remote_ops.to_has_memory = default_child_has_memory; | |
10703 | remote_ops.to_has_stack = default_child_has_stack; | |
10704 | remote_ops.to_has_registers = default_child_has_registers; | |
10705 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10706 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10707 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10708 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10709 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10710 | remote_ops.to_flash_erase = remote_flash_erase; |
10711 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10712 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10713 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10714 | remote_ops.to_can_async_p = remote_can_async_p; |
10715 | remote_ops.to_is_async_p = remote_is_async_p; | |
10716 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10717 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10718 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10719 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10720 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
10721 | remote_ops.to_supports_disable_randomization |
10722 | = remote_supports_disable_randomization; | |
7313baad UW |
10723 | remote_ops.to_fileio_open = remote_hostio_open; |
10724 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
10725 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
10726 | remote_ops.to_fileio_close = remote_hostio_close; | |
10727 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 10728 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 10729 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 10730 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
35b1e5cc SS |
10731 | remote_ops.to_trace_init = remote_trace_init; |
10732 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 10733 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
10734 | remote_ops.to_download_trace_state_variable |
10735 | = remote_download_trace_state_variable; | |
d248b706 KY |
10736 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
10737 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
10738 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10739 | remote_ops.to_trace_start = remote_trace_start; | |
10740 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 10741 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
10742 | remote_ops.to_trace_stop = remote_trace_stop; |
10743 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10744 | remote_ops.to_get_trace_state_variable_value |
10745 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10746 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10747 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10748 | remote_ops.to_upload_trace_state_variables |
10749 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10750 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 10751 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 10752 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10753 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 10754 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 10755 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10756 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10757 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10758 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10759 | remote_ops.to_static_tracepoint_marker_at |
10760 | = remote_static_tracepoint_marker_at; | |
10761 | remote_ops.to_static_tracepoint_markers_by_strid | |
10762 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 10763 | remote_ops.to_traceframe_info = remote_traceframe_info; |
c906108c SS |
10764 | } |
10765 | ||
10766 | /* Set up the extended remote vector by making a copy of the standard | |
10767 | remote vector and adding to it. */ | |
10768 | ||
10769 | static void | |
fba45db2 | 10770 | init_extended_remote_ops (void) |
c906108c SS |
10771 | { |
10772 | extended_remote_ops = remote_ops; | |
10773 | ||
0f71a2f6 | 10774 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10775 | extended_remote_ops.to_longname = |
c906108c | 10776 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10777 | extended_remote_ops.to_doc = |
c906108c | 10778 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10779 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10780 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10781 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10782 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10783 | extended_remote_ops.to_detach = extended_remote_detach; |
10784 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10785 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
10786 | extended_remote_ops.to_supports_disable_randomization |
10787 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
10788 | } |
10789 | ||
6426a772 JM |
10790 | static int |
10791 | remote_can_async_p (void) | |
10792 | { | |
c6ebd6cf | 10793 | if (!target_async_permitted) |
75c99385 PA |
10794 | /* We only enable async when the user specifically asks for it. */ |
10795 | return 0; | |
10796 | ||
23860348 | 10797 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10798 | return serial_can_async_p (remote_desc); |
6426a772 JM |
10799 | } |
10800 | ||
10801 | static int | |
10802 | remote_is_async_p (void) | |
10803 | { | |
c6ebd6cf | 10804 | if (!target_async_permitted) |
75c99385 PA |
10805 | /* We only enable async when the user specifically asks for it. */ |
10806 | return 0; | |
10807 | ||
23860348 | 10808 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10809 | return serial_is_async_p (remote_desc); |
6426a772 JM |
10810 | } |
10811 | ||
2acceee2 JM |
10812 | /* Pass the SERIAL event on and up to the client. One day this code |
10813 | will be able to delay notifying the client of an event until the | |
23860348 | 10814 | point where an entire packet has been received. */ |
2acceee2 | 10815 | |
2bc416ba | 10816 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10817 | void *context); |
2acceee2 JM |
10818 | static void *async_client_context; |
10819 | static serial_event_ftype remote_async_serial_handler; | |
10820 | ||
6426a772 | 10821 | static void |
819cc324 | 10822 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10823 | { |
2acceee2 JM |
10824 | /* Don't propogate error information up to the client. Instead let |
10825 | the client find out about the error by querying the target. */ | |
10826 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10827 | } | |
10828 | ||
74531fed PA |
10829 | static void |
10830 | remote_async_inferior_event_handler (gdb_client_data data) | |
10831 | { | |
10832 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10833 | } | |
10834 | ||
10835 | static void | |
10836 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10837 | { | |
10838 | remote_get_pending_stop_replies (); | |
10839 | } | |
10840 | ||
2acceee2 | 10841 | static void |
2bc416ba | 10842 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10843 | void *context), void *context) |
2acceee2 JM |
10844 | { |
10845 | if (callback != NULL) | |
10846 | { | |
2cd58942 | 10847 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10848 | async_client_callback = callback; |
10849 | async_client_context = context; | |
10850 | } | |
10851 | else | |
2cd58942 | 10852 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10853 | } |
10854 | ||
5a2468f5 | 10855 | static void |
c2d11a7d | 10856 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10857 | { |
427c3a89 | 10858 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10859 | } |
10860 | ||
d471ea57 AC |
10861 | static void |
10862 | show_remote_cmd (char *args, int from_tty) | |
10863 | { | |
37a105a1 | 10864 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 10865 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
10866 | struct cleanup *showlist_chain; |
10867 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 10868 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
10869 | |
10870 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
10871 | for (; list != NULL; list = list->next) | |
10872 | if (strcmp (list->name, "Z-packet") == 0) | |
10873 | continue; | |
427c3a89 DJ |
10874 | else if (list->type == not_set_cmd) |
10875 | /* Alias commands are exactly like the original, except they | |
10876 | don't have the normal type. */ | |
10877 | continue; | |
10878 | else | |
37a105a1 DJ |
10879 | { |
10880 | struct cleanup *option_chain | |
10881 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 10882 | |
37a105a1 DJ |
10883 | ui_out_field_string (uiout, "name", list->name); |
10884 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
10885 | if (list->type == show_cmd) |
10886 | do_setshow_command ((char *) NULL, from_tty, list); | |
10887 | else | |
10888 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
10889 | /* Close the tuple. */ |
10890 | do_cleanups (option_chain); | |
10891 | } | |
427c3a89 DJ |
10892 | |
10893 | /* Close the tuple. */ | |
10894 | do_cleanups (showlist_chain); | |
d471ea57 | 10895 | } |
5a2468f5 | 10896 | |
0f71a2f6 | 10897 | |
23860348 | 10898 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
10899 | static void |
10900 | remote_new_objfile (struct objfile *objfile) | |
10901 | { | |
23860348 | 10902 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 10903 | remote_check_symbols (objfile); |
dc8acb97 MS |
10904 | } |
10905 | ||
00bf0b85 SS |
10906 | /* Pull all the tracepoints defined on the target and create local |
10907 | data structures representing them. We don't want to create real | |
10908 | tracepoints yet, we don't want to mess up the user's existing | |
10909 | collection. */ | |
10910 | ||
10911 | static int | |
10912 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 10913 | { |
00bf0b85 SS |
10914 | struct remote_state *rs = get_remote_state (); |
10915 | char *p; | |
d5551862 | 10916 | |
00bf0b85 SS |
10917 | /* Ask for a first packet of tracepoint definition. */ |
10918 | putpkt ("qTfP"); | |
10919 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10920 | p = rs->buf; | |
10921 | while (*p && *p != 'l') | |
d5551862 | 10922 | { |
00bf0b85 SS |
10923 | parse_tracepoint_definition (p, utpp); |
10924 | /* Ask for another packet of tracepoint definition. */ | |
10925 | putpkt ("qTsP"); | |
10926 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10927 | p = rs->buf; | |
d5551862 | 10928 | } |
00bf0b85 | 10929 | return 0; |
d5551862 SS |
10930 | } |
10931 | ||
00bf0b85 SS |
10932 | static int |
10933 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 10934 | { |
00bf0b85 | 10935 | struct remote_state *rs = get_remote_state (); |
d5551862 | 10936 | char *p; |
d5551862 | 10937 | |
00bf0b85 SS |
10938 | /* Ask for a first packet of variable definition. */ |
10939 | putpkt ("qTfV"); | |
d5551862 SS |
10940 | getpkt (&rs->buf, &rs->buf_size, 0); |
10941 | p = rs->buf; | |
00bf0b85 | 10942 | while (*p && *p != 'l') |
d5551862 | 10943 | { |
00bf0b85 SS |
10944 | parse_tsv_definition (p, utsvp); |
10945 | /* Ask for another packet of variable definition. */ | |
10946 | putpkt ("qTsV"); | |
d5551862 SS |
10947 | getpkt (&rs->buf, &rs->buf_size, 0); |
10948 | p = rs->buf; | |
10949 | } | |
00bf0b85 | 10950 | return 0; |
d5551862 SS |
10951 | } |
10952 | ||
c906108c | 10953 | void |
fba45db2 | 10954 | _initialize_remote (void) |
c906108c | 10955 | { |
ea9c271d | 10956 | struct remote_state *rs; |
9a7071a8 JB |
10957 | struct cmd_list_element *cmd; |
10958 | char *cmd_name; | |
ea9c271d | 10959 | |
0f71a2f6 | 10960 | /* architecture specific data */ |
2bc416ba | 10961 | remote_gdbarch_data_handle = |
23860348 | 10962 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
10963 | remote_g_packet_data_handle = |
10964 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 10965 | |
ea9c271d DJ |
10966 | /* Initialize the per-target state. At the moment there is only one |
10967 | of these, not one per target. Only one target is active at a | |
10968 | time. The default buffer size is unimportant; it will be expanded | |
10969 | whenever a larger buffer is needed. */ | |
0b83947e | 10970 | rs = get_remote_state_raw (); |
ea9c271d DJ |
10971 | rs->buf_size = 400; |
10972 | rs->buf = xmalloc (rs->buf_size); | |
10973 | ||
c906108c SS |
10974 | init_remote_ops (); |
10975 | add_target (&remote_ops); | |
10976 | ||
10977 | init_extended_remote_ops (); | |
10978 | add_target (&extended_remote_ops); | |
cce74817 | 10979 | |
dc8acb97 | 10980 | /* Hook into new objfile notification. */ |
06d3b283 | 10981 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 10982 | |
b803fb0f DJ |
10983 | /* Set up signal handlers. */ |
10984 | sigint_remote_token = | |
10985 | create_async_signal_handler (async_remote_interrupt, NULL); | |
10986 | sigint_remote_twice_token = | |
6d549500 | 10987 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 10988 | |
c906108c SS |
10989 | #if 0 |
10990 | init_remote_threadtests (); | |
10991 | #endif | |
10992 | ||
23860348 | 10993 | /* set/show remote ... */ |
d471ea57 | 10994 | |
1bedd215 | 10995 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
10996 | Remote protocol specific variables\n\ |
10997 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10998 | the packets being used"), |
cff3e48b | 10999 | &remote_set_cmdlist, "set remote ", |
23860348 | 11000 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11001 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11002 | Remote protocol specific variables\n\ |
11003 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11004 | the packets being used"), |
cff3e48b | 11005 | &remote_show_cmdlist, "show remote ", |
23860348 | 11006 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11007 | |
1a966eab AC |
11008 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11009 | Compare section data on target to the exec file.\n\ | |
11010 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11011 | &cmdlist); |
11012 | ||
1a966eab AC |
11013 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11014 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11015 | maintenance packet TEXT\n\ |
11016 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11017 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11018 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11019 | terminating `#' character and checksum."), |
c906108c SS |
11020 | &maintenancelist); |
11021 | ||
7915a72c AC |
11022 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11023 | Set whether to send break if interrupted."), _("\ | |
11024 | Show whether to send break if interrupted."), _("\ | |
11025 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11026 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11027 | &setlist, &showlist); |
9a7071a8 JB |
11028 | cmd_name = "remotebreak"; |
11029 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11030 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11031 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11032 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11033 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11034 | ||
11035 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11036 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11037 | _("\ | |
9a7071a8 JB |
11038 | Set interrupt sequence to remote target."), _("\ |
11039 | Show interrupt sequence to remote target."), _("\ | |
11040 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11041 | NULL, show_interrupt_sequence, | |
11042 | &remote_set_cmdlist, | |
11043 | &remote_show_cmdlist); | |
11044 | ||
11045 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11046 | &interrupt_on_connect, _("\ | |
11047 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11048 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11049 | If set, interrupt sequence is sent to remote target."), | |
11050 | NULL, NULL, | |
11051 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11052 | |
23860348 | 11053 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11054 | |
1a966eab AC |
11055 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11056 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11057 | &setlist); |
1a966eab AC |
11058 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11059 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11060 | &showlist); |
11061 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11062 | set_memory_write_packet_size, _("\ |
11063 | Set the maximum number of bytes per memory-write packet.\n\ | |
11064 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11065 | default packet size. The actual limit is further reduced\n\ | |
11066 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11067 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11068 | &remote_set_cmdlist); |
11069 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11070 | set_memory_read_packet_size, _("\ |
11071 | Set the maximum number of bytes per memory-read packet.\n\ | |
11072 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11073 | default packet size. The actual limit is further reduced\n\ | |
11074 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11075 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11076 | &remote_set_cmdlist); |
11077 | add_cmd ("memory-write-packet-size", no_class, | |
11078 | show_memory_write_packet_size, | |
1a966eab | 11079 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11080 | &remote_show_cmdlist); |
11081 | add_cmd ("memory-read-packet-size", no_class, | |
11082 | show_memory_read_packet_size, | |
1a966eab | 11083 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11084 | &remote_show_cmdlist); |
c906108c | 11085 | |
b3f42336 | 11086 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11087 | &remote_hw_watchpoint_limit, _("\ |
11088 | Set the maximum number of target hardware watchpoints."), _("\ | |
11089 | Show the maximum number of target hardware watchpoints."), _("\ | |
11090 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11091 | NULL, NULL, /* FIXME: i18n: The maximum |
11092 | number of target hardware | |
11093 | watchpoints is %s. */ | |
b3f42336 | 11094 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11095 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11096 | &remote_hw_watchpoint_length_limit, _("\ | |
11097 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11098 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11099 | Specify a negative limit for unlimited."), | |
11100 | NULL, NULL, /* FIXME: i18n: The maximum | |
11101 | length (in bytes) of a target | |
11102 | hardware watchpoint is %s. */ | |
11103 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11104 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11105 | &remote_hw_breakpoint_limit, _("\ |
11106 | Set the maximum number of target hardware breakpoints."), _("\ | |
11107 | Show the maximum number of target hardware breakpoints."), _("\ | |
11108 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11109 | NULL, NULL, /* FIXME: i18n: The maximum |
11110 | number of target hardware | |
11111 | breakpoints is %s. */ | |
b3f42336 | 11112 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11113 | |
4d28ad1e AC |
11114 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
11115 | &remote_address_size, _("\ | |
11116 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
11117 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
11118 | NULL, | |
11119 | NULL, /* FIXME: i18n: */ | |
11120 | &setlist, &showlist); | |
c906108c | 11121 | |
444abaca | 11122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11123 | "X", "binary-download", 1); |
0f71a2f6 | 11124 | |
444abaca | 11125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11126 | "vCont", "verbose-resume", 0); |
506fb367 | 11127 | |
89be2091 DJ |
11128 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11129 | "QPassSignals", "pass-signals", 0); | |
11130 | ||
444abaca | 11131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11132 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11133 | |
444abaca | 11134 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11135 | "P", "set-register", 1); |
d471ea57 | 11136 | |
444abaca | 11137 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11138 | "p", "fetch-register", 1); |
b96ec7ac | 11139 | |
444abaca | 11140 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11141 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11142 | |
444abaca | 11143 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11144 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11145 | |
444abaca | 11146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11147 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11148 | |
444abaca | 11149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11150 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11151 | |
444abaca | 11152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11153 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11154 | |
0876f84a DJ |
11155 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11156 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11157 | |
23181151 DJ |
11158 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11159 | "qXfer:features:read", "target-features", 0); | |
11160 | ||
cfa9d6d9 DJ |
11161 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11162 | "qXfer:libraries:read", "library-info", 0); | |
11163 | ||
2268b414 JK |
11164 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11165 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11166 | ||
fd79ecee DJ |
11167 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11168 | "qXfer:memory-map:read", "memory-map", 0); | |
11169 | ||
0e7f50da UW |
11170 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11171 | "qXfer:spu:read", "read-spu-object", 0); | |
11172 | ||
11173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11174 | "qXfer:spu:write", "write-spu-object", 0); | |
11175 | ||
07e059b5 VP |
11176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11177 | "qXfer:osdata:read", "osdata", 0); | |
11178 | ||
dc146f7c VP |
11179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11180 | "qXfer:threads:read", "threads", 0); | |
11181 | ||
4aa995e1 PA |
11182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11183 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11184 | ||
11185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11186 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11187 | ||
b3b9301e PA |
11188 | add_packet_config_cmd |
11189 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11190 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11191 | ||
444abaca | 11192 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11193 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11194 | 0); |
11195 | ||
711e434b PM |
11196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11197 | "qGetTIBAddr", "get-thread-information-block-address", | |
11198 | 0); | |
11199 | ||
40ab02ce MS |
11200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11201 | "bc", "reverse-continue", 0); | |
11202 | ||
11203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11204 | "bs", "reverse-step", 0); | |
11205 | ||
be2a5f71 DJ |
11206 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11207 | "qSupported", "supported-packets", 0); | |
11208 | ||
08388c79 DE |
11209 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11210 | "qSearch:memory", "search-memory", 0); | |
11211 | ||
a6b151f1 DJ |
11212 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11213 | "vFile:open", "hostio-open", 0); | |
11214 | ||
11215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11216 | "vFile:pread", "hostio-pread", 0); | |
11217 | ||
11218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11219 | "vFile:pwrite", "hostio-pwrite", 0); | |
11220 | ||
11221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11222 | "vFile:close", "hostio-close", 0); | |
11223 | ||
11224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11225 | "vFile:unlink", "hostio-unlink", 0); | |
11226 | ||
b9e7b9c3 UW |
11227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11228 | "vFile:readlink", "hostio-readlink", 0); | |
11229 | ||
2d717e4f DJ |
11230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11231 | "vAttach", "attach", 0); | |
11232 | ||
11233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11234 | "vRun", "run", 0); | |
11235 | ||
a6f3e723 SL |
11236 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11237 | "QStartNoAckMode", "noack", 0); | |
11238 | ||
82f73884 PA |
11239 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11240 | "vKill", "kill", 0); | |
11241 | ||
0b16c5cf PA |
11242 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11243 | "qAttached", "query-attached", 0); | |
11244 | ||
782b2b07 | 11245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11246 | "ConditionalTracepoints", |
11247 | "conditional-tracepoints", 0); | |
7a697b8d SS |
11248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11249 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11250 | |
409873ef SS |
11251 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11252 | "TracepointSource", "TracepointSource", 0); | |
11253 | ||
d914c394 SS |
11254 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11255 | "QAllow", "allow", 0); | |
11256 | ||
0fb4aa4b PA |
11257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11258 | "StaticTracepoints", "static-tracepoints", 0); | |
11259 | ||
1e4d1764 YQ |
11260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11261 | "InstallInTrace", "install-in-trace", 0); | |
11262 | ||
0fb4aa4b PA |
11263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11264 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11265 | ||
78d85199 YQ |
11266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11267 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11268 | ||
03583c20 UW |
11269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11270 | "QDisableRandomization", "disable-randomization", 0); | |
11271 | ||
37a105a1 DJ |
11272 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11273 | Z sub-packet has its own set and show commands, but users may | |
11274 | have sets to this variable in their .gdbinit files (or in their | |
11275 | documentation). */ | |
e9e68a56 | 11276 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11277 | &remote_Z_packet_detect, _("\ |
11278 | Set use of remote protocol `Z' packets"), _("\ | |
11279 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11280 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11281 | packets."), |
e9e68a56 | 11282 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11283 | show_remote_protocol_Z_packet_cmd, |
11284 | /* FIXME: i18n: Use of remote protocol | |
11285 | `Z' packets is %s. */ | |
e9e68a56 | 11286 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11287 | |
a6b151f1 DJ |
11288 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11289 | Manipulate files on the remote system\n\ | |
11290 | Transfer files to and from the remote target system."), | |
11291 | &remote_cmdlist, "remote ", | |
11292 | 0 /* allow-unknown */, &cmdlist); | |
11293 | ||
11294 | add_cmd ("put", class_files, remote_put_command, | |
11295 | _("Copy a local file to the remote system."), | |
11296 | &remote_cmdlist); | |
11297 | ||
11298 | add_cmd ("get", class_files, remote_get_command, | |
11299 | _("Copy a remote file to the local system."), | |
11300 | &remote_cmdlist); | |
11301 | ||
11302 | add_cmd ("delete", class_files, remote_delete_command, | |
11303 | _("Delete a remote file."), | |
11304 | &remote_cmdlist); | |
11305 | ||
2d717e4f DJ |
11306 | remote_exec_file = xstrdup (""); |
11307 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11308 | &remote_exec_file, _("\ | |
11309 | Set the remote pathname for \"run\""), _("\ | |
11310 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11311 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11312 | ||
449092f6 CV |
11313 | /* Eventually initialize fileio. See fileio.c */ |
11314 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11315 | |
11316 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11317 | special ptids with it set to != 0. */ | |
82f73884 PA |
11318 | magic_null_ptid = ptid_build (42000, 1, -1); |
11319 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11320 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11321 | |
11322 | target_buf_size = 2048; | |
11323 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11324 | } |
10760264 | 11325 |