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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 | |
b775012e LM |
245 | static int remote_supports_cond_breakpoints (void); |
246 | ||
74531fed PA |
247 | /* The non-stop remote protocol provisions for one pending stop reply. |
248 | This is where we keep it until it is acknowledged. */ | |
249 | ||
250 | static struct stop_reply *pending_stop_reply = NULL; | |
251 | ||
a6b151f1 DJ |
252 | /* For "remote". */ |
253 | ||
254 | static struct cmd_list_element *remote_cmdlist; | |
255 | ||
bb572ddd DJ |
256 | /* For "set remote" and "show remote". */ |
257 | ||
258 | static struct cmd_list_element *remote_set_cmdlist; | |
259 | static struct cmd_list_element *remote_show_cmdlist; | |
260 | ||
ea9c271d DJ |
261 | /* Description of the remote protocol state for the currently |
262 | connected target. This is per-target state, and independent of the | |
263 | selected architecture. */ | |
264 | ||
265 | struct remote_state | |
266 | { | |
267 | /* A buffer to use for incoming packets, and its current size. The | |
268 | buffer is grown dynamically for larger incoming packets. | |
269 | Outgoing packets may also be constructed in this buffer. | |
270 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
271 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
272 | packets. */ | |
273 | char *buf; | |
274 | long buf_size; | |
be2a5f71 DJ |
275 | |
276 | /* If we negotiated packet size explicitly (and thus can bypass | |
277 | heuristics for the largest packet size that will not overflow | |
278 | a buffer in the stub), this will be set to that packet size. | |
279 | Otherwise zero, meaning to use the guessed size. */ | |
280 | long explicit_packet_size; | |
2d717e4f DJ |
281 | |
282 | /* remote_wait is normally called when the target is running and | |
283 | waits for a stop reply packet. But sometimes we need to call it | |
284 | when the target is already stopped. We can send a "?" packet | |
285 | and have remote_wait read the response. Or, if we already have | |
286 | the response, we can stash it in BUF and tell remote_wait to | |
287 | skip calling getpkt. This flag is set when BUF contains a | |
288 | stop reply packet and the target is not waiting. */ | |
289 | int cached_wait_status; | |
a6f3e723 SL |
290 | |
291 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
292 | expect acks from each other. The connection is assumed to be | |
293 | reliable. */ | |
294 | int noack_mode; | |
82f73884 PA |
295 | |
296 | /* True if we're connected in extended remote mode. */ | |
297 | int extended; | |
298 | ||
299 | /* True if the stub reported support for multi-process | |
300 | extensions. */ | |
301 | int multi_process_aware; | |
e24a49d8 PA |
302 | |
303 | /* True if we resumed the target and we're waiting for the target to | |
304 | stop. In the mean time, we can't start another command/query. | |
305 | The remote server wouldn't be ready to process it, so we'd | |
306 | timeout waiting for a reply that would never come and eventually | |
307 | we'd close the connection. This can happen in asynchronous mode | |
308 | because we allow GDB commands while the target is running. */ | |
309 | int waiting_for_stop_reply; | |
74531fed PA |
310 | |
311 | /* True if the stub reports support for non-stop mode. */ | |
312 | int non_stop_aware; | |
313 | ||
314 | /* True if the stub reports support for vCont;t. */ | |
315 | int support_vCont_t; | |
782b2b07 SS |
316 | |
317 | /* True if the stub reports support for conditional tracepoints. */ | |
318 | int cond_tracepoints; | |
3a29589a | 319 | |
3788aec7 LM |
320 | /* True if the stub reports support for target-side breakpoint |
321 | conditions. */ | |
322 | int cond_breakpoints; | |
323 | ||
7a697b8d SS |
324 | /* True if the stub reports support for fast tracepoints. */ |
325 | int fast_tracepoints; | |
326 | ||
0fb4aa4b PA |
327 | /* True if the stub reports support for static tracepoints. */ |
328 | int static_tracepoints; | |
329 | ||
1e4d1764 YQ |
330 | /* True if the stub reports support for installing tracepoint while |
331 | tracing. */ | |
332 | int install_in_trace; | |
333 | ||
d5551862 SS |
334 | /* True if the stub can continue running a trace while GDB is |
335 | disconnected. */ | |
336 | int disconnected_tracing; | |
337 | ||
d248b706 KY |
338 | /* True if the stub reports support for enabling and disabling |
339 | tracepoints while a trace experiment is running. */ | |
340 | int enable_disable_tracepoints; | |
341 | ||
3065dfb6 SS |
342 | /* True if the stub can collect strings using tracenz bytecode. */ |
343 | int string_tracing; | |
344 | ||
3a29589a DJ |
345 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
346 | responded to that. */ | |
347 | int ctrlc_pending_p; | |
ea9c271d DJ |
348 | }; |
349 | ||
dc146f7c VP |
350 | /* Private data that we'll store in (struct thread_info)->private. */ |
351 | struct private_thread_info | |
352 | { | |
353 | char *extra; | |
354 | int core; | |
355 | }; | |
356 | ||
357 | static void | |
358 | free_private_thread_info (struct private_thread_info *info) | |
359 | { | |
360 | xfree (info->extra); | |
361 | xfree (info); | |
362 | } | |
363 | ||
82f73884 PA |
364 | /* Returns true if the multi-process extensions are in effect. */ |
365 | static int | |
366 | remote_multi_process_p (struct remote_state *rs) | |
367 | { | |
901f9912 | 368 | return rs->multi_process_aware; |
82f73884 PA |
369 | } |
370 | ||
ea9c271d DJ |
371 | /* This data could be associated with a target, but we do not always |
372 | have access to the current target when we need it, so for now it is | |
373 | static. This will be fine for as long as only one target is in use | |
374 | at a time. */ | |
375 | static struct remote_state remote_state; | |
376 | ||
377 | static struct remote_state * | |
0b83947e | 378 | get_remote_state_raw (void) |
ea9c271d DJ |
379 | { |
380 | return &remote_state; | |
381 | } | |
382 | ||
383 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 384 | |
ad10f812 AC |
385 | struct packet_reg |
386 | { | |
387 | long offset; /* Offset into G packet. */ | |
388 | long regnum; /* GDB's internal register number. */ | |
389 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 390 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 391 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 392 | at present. */ |
1cf3db46 | 393 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 394 | at present. */ |
ad10f812 AC |
395 | }; |
396 | ||
ea9c271d | 397 | struct remote_arch_state |
d01949b6 | 398 | { |
ad10f812 AC |
399 | /* Description of the remote protocol registers. */ |
400 | long sizeof_g_packet; | |
b323314b AC |
401 | |
402 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 403 | (making an array gdbarch_num_regs in size). */ |
b323314b | 404 | struct packet_reg *regs; |
ad10f812 | 405 | |
d01949b6 AC |
406 | /* This is the size (in chars) of the first response to the ``g'' |
407 | packet. It is used as a heuristic when determining the maximum | |
408 | size of memory-read and memory-write packets. A target will | |
409 | typically only reserve a buffer large enough to hold the ``g'' | |
410 | packet. The size does not include packet overhead (headers and | |
23860348 | 411 | trailers). */ |
d01949b6 AC |
412 | long actual_register_packet_size; |
413 | ||
414 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 415 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
416 | long remote_packet_size; |
417 | }; | |
418 | ||
35b1e5cc SS |
419 | long sizeof_pkt = 2000; |
420 | ||
421 | /* Utility: generate error from an incoming stub packet. */ | |
422 | static void | |
423 | trace_error (char *buf) | |
424 | { | |
425 | if (*buf++ != 'E') | |
426 | return; /* not an error msg */ | |
427 | switch (*buf) | |
428 | { | |
429 | case '1': /* malformed packet error */ | |
430 | if (*++buf == '0') /* general case: */ | |
431 | error (_("remote.c: error in outgoing packet.")); | |
432 | else | |
433 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
434 | strtol (buf, NULL, 16)); | |
435 | case '2': | |
436 | error (_("trace API error 0x%s."), ++buf); | |
437 | default: | |
438 | error (_("Target returns error code '%s'."), buf); | |
439 | } | |
440 | } | |
441 | ||
442 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
443 | static char * | |
444 | remote_get_noisy_reply (char **buf_p, | |
445 | long *sizeof_buf) | |
446 | { | |
447 | do /* Loop on reply from remote stub. */ | |
448 | { | |
449 | char *buf; | |
a744cf53 | 450 | |
0df8b418 | 451 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
452 | getpkt (buf_p, sizeof_buf, 0); |
453 | buf = *buf_p; | |
ad91cd99 | 454 | if (buf[0] == 'E') |
35b1e5cc | 455 | trace_error (buf); |
dde08ee1 PA |
456 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
457 | { | |
458 | ULONGEST ul; | |
459 | CORE_ADDR from, to, org_to; | |
460 | char *p, *pp; | |
461 | int adjusted_size = 0; | |
462 | volatile struct gdb_exception ex; | |
463 | ||
464 | p = buf + strlen ("qRelocInsn:"); | |
465 | pp = unpack_varlen_hex (p, &ul); | |
466 | if (*pp != ';') | |
cb91c06a | 467 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
468 | from = ul; |
469 | ||
470 | p = pp + 1; | |
a9cbf802 | 471 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
472 | to = ul; |
473 | ||
474 | org_to = to; | |
475 | ||
476 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
477 | { | |
478 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
479 | } | |
480 | if (ex.reason >= 0) | |
481 | { | |
482 | adjusted_size = to - org_to; | |
483 | ||
484 | sprintf (buf, "qRelocInsn:%x", adjusted_size); | |
485 | putpkt (buf); | |
486 | } | |
487 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
488 | { | |
489 | /* Propagate memory errors silently back to the target. | |
490 | The stub may have limited the range of addresses we | |
491 | can write to, for example. */ | |
492 | putpkt ("E01"); | |
493 | } | |
494 | else | |
495 | { | |
496 | /* Something unexpectedly bad happened. Be verbose so | |
497 | we can tell what, and propagate the error back to the | |
498 | stub, so it doesn't get stuck waiting for a | |
499 | response. */ | |
500 | exception_fprintf (gdb_stderr, ex, | |
501 | _("warning: relocating instruction: ")); | |
502 | putpkt ("E01"); | |
503 | } | |
504 | } | |
ad91cd99 | 505 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
506 | remote_console_output (buf + 1); /* 'O' message from stub */ |
507 | else | |
0df8b418 | 508 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
509 | } |
510 | while (1); | |
511 | } | |
3c3bea1c | 512 | |
d01949b6 AC |
513 | /* Handle for retreving the remote protocol data from gdbarch. */ |
514 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
515 | ||
ea9c271d DJ |
516 | static struct remote_arch_state * |
517 | get_remote_arch_state (void) | |
d01949b6 | 518 | { |
1cf3db46 | 519 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
520 | } |
521 | ||
0b83947e DJ |
522 | /* Fetch the global remote target state. */ |
523 | ||
524 | static struct remote_state * | |
525 | get_remote_state (void) | |
526 | { | |
527 | /* Make sure that the remote architecture state has been | |
528 | initialized, because doing so might reallocate rs->buf. Any | |
529 | function which calls getpkt also needs to be mindful of changes | |
530 | to rs->buf, but this call limits the number of places which run | |
531 | into trouble. */ | |
532 | get_remote_arch_state (); | |
533 | ||
534 | return get_remote_state_raw (); | |
535 | } | |
536 | ||
74ca34ce DJ |
537 | static int |
538 | compare_pnums (const void *lhs_, const void *rhs_) | |
539 | { | |
540 | const struct packet_reg * const *lhs = lhs_; | |
541 | const struct packet_reg * const *rhs = rhs_; | |
542 | ||
543 | if ((*lhs)->pnum < (*rhs)->pnum) | |
544 | return -1; | |
545 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
546 | return 0; | |
547 | else | |
548 | return 1; | |
549 | } | |
550 | ||
c21236dc PA |
551 | static int |
552 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 553 | { |
74ca34ce | 554 | int regnum, num_remote_regs, offset; |
74ca34ce | 555 | struct packet_reg **remote_regs; |
ea9c271d | 556 | |
4a22f64d | 557 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 558 | { |
c21236dc | 559 | struct packet_reg *r = ®s[regnum]; |
baef701f | 560 | |
4a22f64d | 561 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
562 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
563 | r->pnum = -1; | |
564 | else | |
565 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
566 | ||
b323314b | 567 | r->regnum = regnum; |
74ca34ce DJ |
568 | } |
569 | ||
570 | /* Define the g/G packet format as the contents of each register | |
571 | with a remote protocol number, in order of ascending protocol | |
572 | number. */ | |
573 | ||
4a22f64d | 574 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 575 | * sizeof (struct packet_reg *)); |
f57d151a | 576 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 577 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 578 | regnum++) |
c21236dc PA |
579 | if (regs[regnum].pnum != -1) |
580 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 581 | |
74ca34ce DJ |
582 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
583 | compare_pnums); | |
584 | ||
585 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
586 | { | |
587 | remote_regs[regnum]->in_g_packet = 1; | |
588 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 589 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
590 | } |
591 | ||
c21236dc PA |
592 | return offset; |
593 | } | |
594 | ||
595 | /* Given the architecture described by GDBARCH, return the remote | |
596 | protocol register's number and the register's offset in the g/G | |
597 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
598 | If the target does not have a mapping for REGNUM, return false, | |
599 | otherwise, return true. */ | |
600 | ||
601 | int | |
602 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
603 | int *pnum, int *poffset) | |
604 | { | |
605 | int sizeof_g_packet; | |
606 | struct packet_reg *regs; | |
607 | struct cleanup *old_chain; | |
608 | ||
609 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
610 | ||
611 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
612 | old_chain = make_cleanup (xfree, regs); | |
613 | ||
614 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
615 | ||
616 | *pnum = regs[regnum].pnum; | |
617 | *poffset = regs[regnum].offset; | |
618 | ||
619 | do_cleanups (old_chain); | |
620 | ||
621 | return *pnum != -1; | |
622 | } | |
623 | ||
624 | static void * | |
625 | init_remote_state (struct gdbarch *gdbarch) | |
626 | { | |
627 | struct remote_state *rs = get_remote_state_raw (); | |
628 | struct remote_arch_state *rsa; | |
629 | ||
630 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
631 | ||
632 | /* Use the architecture to build a regnum<->pnum table, which will be | |
633 | 1:1 unless a feature set specifies otherwise. */ | |
634 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
635 | gdbarch_num_regs (gdbarch), | |
636 | struct packet_reg); | |
637 | ||
74ca34ce DJ |
638 | /* Record the maximum possible size of the g packet - it may turn out |
639 | to be smaller. */ | |
c21236dc | 640 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 641 | |
0df8b418 | 642 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
643 | remote stubs have a hardwired buffer size of 400 bytes |
644 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
645 | as the maximum packet-size to ensure that the packet and an extra | |
646 | NUL character can always fit in the buffer. This stops GDB | |
647 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
648 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
649 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 650 | |
ea9c271d DJ |
651 | /* This one is filled in when a ``g'' packet is received. */ |
652 | rsa->actual_register_packet_size = 0; | |
653 | ||
654 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
655 | default, adjust the size accordingly. Remember that each byte is |
656 | encoded as two characters. 32 is the overhead for the packet | |
657 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 658 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 659 | little. */ |
ea9c271d DJ |
660 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
661 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 662 | |
ea9c271d DJ |
663 | /* Make sure that the packet buffer is plenty big enough for |
664 | this architecture. */ | |
665 | if (rs->buf_size < rsa->remote_packet_size) | |
666 | { | |
667 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 668 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 669 | } |
6d820c5c | 670 | |
ea9c271d DJ |
671 | return rsa; |
672 | } | |
673 | ||
674 | /* Return the current allowed size of a remote packet. This is | |
675 | inferred from the current architecture, and should be used to | |
676 | limit the length of outgoing packets. */ | |
677 | static long | |
678 | get_remote_packet_size (void) | |
679 | { | |
be2a5f71 | 680 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
681 | struct remote_arch_state *rsa = get_remote_arch_state (); |
682 | ||
be2a5f71 DJ |
683 | if (rs->explicit_packet_size) |
684 | return rs->explicit_packet_size; | |
685 | ||
ea9c271d | 686 | return rsa->remote_packet_size; |
d01949b6 AC |
687 | } |
688 | ||
ad10f812 | 689 | static struct packet_reg * |
ea9c271d | 690 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 691 | { |
1cf3db46 | 692 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
693 | return NULL; |
694 | else | |
ad10f812 | 695 | { |
ea9c271d | 696 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 697 | |
b323314b AC |
698 | gdb_assert (r->regnum == regnum); |
699 | return r; | |
ad10f812 | 700 | } |
ad10f812 AC |
701 | } |
702 | ||
703 | static struct packet_reg * | |
ea9c271d | 704 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 705 | { |
b323314b | 706 | int i; |
a744cf53 | 707 | |
1cf3db46 | 708 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 709 | { |
ea9c271d | 710 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 711 | |
b323314b AC |
712 | if (r->pnum == pnum) |
713 | return r; | |
ad10f812 AC |
714 | } |
715 | return NULL; | |
d01949b6 AC |
716 | } |
717 | ||
3c3bea1c GS |
718 | /* FIXME: graces/2002-08-08: These variables should eventually be |
719 | bound to an instance of the target object (as in gdbarch-tdep()), | |
720 | when such a thing exists. */ | |
721 | ||
722 | /* This is set to the data address of the access causing the target | |
723 | to stop for a watchpoint. */ | |
724 | static CORE_ADDR remote_watch_data_address; | |
725 | ||
94e08568 | 726 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
727 | static int remote_stopped_by_watchpoint_p; |
728 | ||
c906108c SS |
729 | static struct target_ops remote_ops; |
730 | ||
731 | static struct target_ops extended_remote_ops; | |
732 | ||
6426a772 JM |
733 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
734 | ``forever'' still use the normal timeout mechanism. This is | |
735 | currently used by the ASYNC code to guarentee that target reads | |
736 | during the initial connect always time-out. Once getpkt has been | |
737 | modified to return a timeout indication and, in turn | |
738 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 739 | this can go away. */ |
6426a772 JM |
740 | static int wait_forever_enabled_p = 1; |
741 | ||
9a7071a8 JB |
742 | /* Allow the user to specify what sequence to send to the remote |
743 | when he requests a program interruption: Although ^C is usually | |
744 | what remote systems expect (this is the default, here), it is | |
745 | sometimes preferable to send a break. On other systems such | |
746 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
747 | is required in order to interrupt the execution. */ | |
748 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
749 | const char interrupt_sequence_break[] = "BREAK"; | |
750 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 751 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
752 | { |
753 | interrupt_sequence_control_c, | |
754 | interrupt_sequence_break, | |
755 | interrupt_sequence_break_g, | |
756 | NULL | |
757 | }; | |
758 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
759 | ||
760 | static void | |
761 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
762 | struct cmd_list_element *c, | |
763 | const char *value) | |
764 | { | |
765 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
766 | fprintf_filtered (file, | |
767 | _("Send the ASCII ETX character (Ctrl-c) " | |
768 | "to the remote target to interrupt the " | |
769 | "execution of the program.\n")); | |
770 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
771 | fprintf_filtered (file, | |
772 | _("send a break signal to the remote target " | |
773 | "to interrupt the execution of the program.\n")); | |
774 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
775 | fprintf_filtered (file, | |
776 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
777 | "the remote target to interrupt the execution " | |
778 | "of Linux kernel.\n")); | |
779 | else | |
780 | internal_error (__FILE__, __LINE__, | |
781 | _("Invalid value for interrupt_sequence_mode: %s."), | |
782 | interrupt_sequence_mode); | |
783 | } | |
6426a772 | 784 | |
9a7071a8 JB |
785 | /* This boolean variable specifies whether interrupt_sequence is sent |
786 | to the remote target when gdb connects to it. | |
787 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
788 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
789 | static int interrupt_on_connect = 0; | |
c906108c | 790 | |
9a7071a8 JB |
791 | /* This variable is used to implement the "set/show remotebreak" commands. |
792 | Since these commands are now deprecated in favor of "set/show remote | |
793 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
794 | static int remote_break; |
795 | ||
9a7071a8 JB |
796 | static void |
797 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
798 | { | |
799 | if (remote_break) | |
800 | interrupt_sequence_mode = interrupt_sequence_break; | |
801 | else | |
802 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
803 | } | |
804 | ||
805 | static void | |
806 | show_remotebreak (struct ui_file *file, int from_tty, | |
807 | struct cmd_list_element *c, | |
808 | const char *value) | |
809 | { | |
810 | } | |
811 | ||
c906108c SS |
812 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
813 | remote_open knows that we don't have a file open when the program | |
814 | starts. */ | |
819cc324 | 815 | static struct serial *remote_desc = NULL; |
c906108c | 816 | |
c906108c SS |
817 | /* This variable sets the number of bits in an address that are to be |
818 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 819 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
820 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
821 | initial implementation of remote.c restricted the address sent in | |
822 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
823 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
824 | address was never sent. Since fixing this bug may cause a break in | |
825 | some remote targets this variable is principly provided to | |
23860348 | 826 | facilitate backward compatibility. */ |
c906108c SS |
827 | |
828 | static int remote_address_size; | |
829 | ||
75c99385 PA |
830 | /* Temporary to track who currently owns the terminal. See |
831 | remote_terminal_* for more details. */ | |
6426a772 JM |
832 | |
833 | static int remote_async_terminal_ours_p; | |
834 | ||
2d717e4f DJ |
835 | /* The executable file to use for "run" on the remote side. */ |
836 | ||
837 | static char *remote_exec_file = ""; | |
838 | ||
11cf8741 | 839 | \f |
11cf8741 | 840 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
841 | memory read/write packet. MIN (rsa->remote_packet_size, |
842 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 843 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
844 | (speed up transfers). The variables ``preferred_*'' (the user |
845 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 846 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
847 | |
848 | struct memory_packet_config | |
849 | { | |
850 | char *name; | |
851 | long size; | |
852 | int fixed_p; | |
853 | }; | |
854 | ||
855 | /* Compute the current size of a read/write packet. Since this makes | |
856 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
857 | ||
858 | static long | |
859 | get_memory_packet_size (struct memory_packet_config *config) | |
860 | { | |
d01949b6 | 861 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
862 | struct remote_arch_state *rsa = get_remote_arch_state (); |
863 | ||
11cf8741 JM |
864 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
865 | law?) that some hosts don't cope very well with large alloca() | |
866 | calls. Eventually the alloca() code will be replaced by calls to | |
867 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 868 | be lifted or removed. */ |
11cf8741 JM |
869 | #ifndef MAX_REMOTE_PACKET_SIZE |
870 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
871 | #endif | |
3de11b2e | 872 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 873 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 874 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
875 | #endif |
876 | long what_they_get; | |
877 | if (config->fixed_p) | |
878 | { | |
879 | if (config->size <= 0) | |
880 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
881 | else | |
882 | what_they_get = config->size; | |
883 | } | |
884 | else | |
885 | { | |
ea9c271d | 886 | what_they_get = get_remote_packet_size (); |
23860348 | 887 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
888 | if (config->size > 0 |
889 | && what_they_get > config->size) | |
890 | what_they_get = config->size; | |
be2a5f71 DJ |
891 | |
892 | /* Limit it to the size of the targets ``g'' response unless we have | |
893 | permission from the stub to use a larger packet size. */ | |
894 | if (rs->explicit_packet_size == 0 | |
895 | && rsa->actual_register_packet_size > 0 | |
896 | && what_they_get > rsa->actual_register_packet_size) | |
897 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
898 | } |
899 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
900 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
901 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
902 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
903 | |
904 | /* Make sure there is room in the global buffer for this packet | |
905 | (including its trailing NUL byte). */ | |
906 | if (rs->buf_size < what_they_get + 1) | |
907 | { | |
908 | rs->buf_size = 2 * what_they_get; | |
909 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
910 | } | |
911 | ||
11cf8741 JM |
912 | return what_they_get; |
913 | } | |
914 | ||
0df8b418 | 915 | /* Update the size of a read/write packet. If they user wants |
23860348 | 916 | something really big then do a sanity check. */ |
11cf8741 JM |
917 | |
918 | static void | |
919 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
920 | { | |
921 | int fixed_p = config->fixed_p; | |
922 | long size = config->size; | |
a744cf53 | 923 | |
11cf8741 | 924 | if (args == NULL) |
8a3fe4f8 | 925 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
926 | else if (strcmp (args, "hard") == 0 |
927 | || strcmp (args, "fixed") == 0) | |
928 | fixed_p = 1; | |
929 | else if (strcmp (args, "soft") == 0 | |
930 | || strcmp (args, "limit") == 0) | |
931 | fixed_p = 0; | |
932 | else | |
933 | { | |
934 | char *end; | |
a744cf53 | 935 | |
11cf8741 JM |
936 | size = strtoul (args, &end, 0); |
937 | if (args == end) | |
8a3fe4f8 | 938 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
939 | #if 0 |
940 | /* Instead of explicitly capping the size of a packet to | |
941 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
942 | instead allowed to set the size to something arbitrarily | |
23860348 | 943 | large. */ |
11cf8741 | 944 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 945 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
946 | #endif |
947 | } | |
23860348 | 948 | /* Extra checks? */ |
11cf8741 JM |
949 | if (fixed_p && !config->fixed_p) |
950 | { | |
e2e0b3e5 AC |
951 | if (! query (_("The target may not be able to correctly handle a %s\n" |
952 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 953 | config->name, size)) |
8a3fe4f8 | 954 | error (_("Packet size not changed.")); |
11cf8741 | 955 | } |
23860348 | 956 | /* Update the config. */ |
11cf8741 JM |
957 | config->fixed_p = fixed_p; |
958 | config->size = size; | |
959 | } | |
960 | ||
961 | static void | |
962 | show_memory_packet_size (struct memory_packet_config *config) | |
963 | { | |
a3f17187 | 964 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 965 | if (config->fixed_p) |
a3f17187 | 966 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
967 | get_memory_packet_size (config)); |
968 | else | |
a3f17187 | 969 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
970 | get_memory_packet_size (config)); |
971 | } | |
972 | ||
973 | static struct memory_packet_config memory_write_packet_config = | |
974 | { | |
975 | "memory-write-packet-size", | |
976 | }; | |
977 | ||
978 | static void | |
979 | set_memory_write_packet_size (char *args, int from_tty) | |
980 | { | |
981 | set_memory_packet_size (args, &memory_write_packet_config); | |
982 | } | |
983 | ||
984 | static void | |
985 | show_memory_write_packet_size (char *args, int from_tty) | |
986 | { | |
987 | show_memory_packet_size (&memory_write_packet_config); | |
988 | } | |
989 | ||
990 | static long | |
991 | get_memory_write_packet_size (void) | |
992 | { | |
993 | return get_memory_packet_size (&memory_write_packet_config); | |
994 | } | |
995 | ||
996 | static struct memory_packet_config memory_read_packet_config = | |
997 | { | |
998 | "memory-read-packet-size", | |
999 | }; | |
1000 | ||
1001 | static void | |
1002 | set_memory_read_packet_size (char *args, int from_tty) | |
1003 | { | |
1004 | set_memory_packet_size (args, &memory_read_packet_config); | |
1005 | } | |
1006 | ||
1007 | static void | |
1008 | show_memory_read_packet_size (char *args, int from_tty) | |
1009 | { | |
1010 | show_memory_packet_size (&memory_read_packet_config); | |
1011 | } | |
1012 | ||
1013 | static long | |
1014 | get_memory_read_packet_size (void) | |
1015 | { | |
1016 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1017 | |
11cf8741 JM |
1018 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1019 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1020 | increased beyond this. */ |
1021 | if (size > get_remote_packet_size ()) | |
1022 | size = get_remote_packet_size (); | |
11cf8741 JM |
1023 | return size; |
1024 | } | |
1025 | ||
11cf8741 | 1026 | \f |
5a2468f5 | 1027 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1028 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1029 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1030 | |
1031 | enum packet_support | |
1032 | { | |
1033 | PACKET_SUPPORT_UNKNOWN = 0, | |
1034 | PACKET_ENABLE, | |
1035 | PACKET_DISABLE | |
1036 | }; | |
1037 | ||
5a2468f5 JM |
1038 | struct packet_config |
1039 | { | |
bb572ddd DJ |
1040 | const char *name; |
1041 | const char *title; | |
7f19b9a2 | 1042 | enum auto_boolean detect; |
5a2468f5 JM |
1043 | enum packet_support support; |
1044 | }; | |
1045 | ||
d471ea57 | 1046 | /* Analyze a packet's return value and update the packet config |
23860348 | 1047 | accordingly. */ |
d471ea57 AC |
1048 | |
1049 | enum packet_result | |
1050 | { | |
1051 | PACKET_ERROR, | |
1052 | PACKET_OK, | |
1053 | PACKET_UNKNOWN | |
1054 | }; | |
1055 | ||
5a2468f5 | 1056 | static void |
d471ea57 | 1057 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1058 | { |
d471ea57 AC |
1059 | switch (config->detect) |
1060 | { | |
7f19b9a2 | 1061 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1062 | config->support = PACKET_ENABLE; |
1063 | break; | |
7f19b9a2 | 1064 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1065 | config->support = PACKET_DISABLE; |
1066 | break; | |
7f19b9a2 | 1067 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1068 | config->support = PACKET_SUPPORT_UNKNOWN; |
1069 | break; | |
1070 | } | |
5a2468f5 JM |
1071 | } |
1072 | ||
1073 | static void | |
fba45db2 | 1074 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1075 | { |
1076 | char *support = "internal-error"; | |
a744cf53 | 1077 | |
5a2468f5 JM |
1078 | switch (config->support) |
1079 | { | |
1080 | case PACKET_ENABLE: | |
1081 | support = "enabled"; | |
1082 | break; | |
1083 | case PACKET_DISABLE: | |
1084 | support = "disabled"; | |
1085 | break; | |
1086 | case PACKET_SUPPORT_UNKNOWN: | |
1087 | support = "unknown"; | |
1088 | break; | |
1089 | } | |
1090 | switch (config->detect) | |
1091 | { | |
7f19b9a2 | 1092 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1093 | printf_filtered (_("Support for the `%s' packet " |
1094 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1095 | config->name, support); |
5a2468f5 | 1096 | break; |
7f19b9a2 AC |
1097 | case AUTO_BOOLEAN_TRUE: |
1098 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1099 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1100 | config->name, support); | |
8e248173 | 1101 | break; |
5a2468f5 JM |
1102 | } |
1103 | } | |
1104 | ||
1105 | static void | |
bb572ddd DJ |
1106 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1107 | const char *title, int legacy) | |
d471ea57 | 1108 | { |
5a2468f5 JM |
1109 | char *set_doc; |
1110 | char *show_doc; | |
d471ea57 | 1111 | char *cmd_name; |
3ed07be4 | 1112 | |
5a2468f5 JM |
1113 | config->name = name; |
1114 | config->title = title; | |
7f19b9a2 | 1115 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1116 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1117 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1118 | name, title); | |
3e43a32a MS |
1119 | show_doc = xstrprintf ("Show current use of remote " |
1120 | "protocol `%s' (%s) packet", | |
b435e160 | 1121 | name, title); |
d471ea57 | 1122 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1123 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1124 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1125 | &config->detect, set_doc, |
1126 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1127 | set_remote_protocol_packet_cmd, |
1128 | show_remote_protocol_packet_cmd, | |
1129 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1130 | /* The command code copies the documentation strings. */ |
1131 | xfree (set_doc); | |
1132 | xfree (show_doc); | |
23860348 | 1133 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1134 | if (legacy) |
1135 | { | |
1136 | char *legacy_name; | |
a744cf53 | 1137 | |
b435e160 | 1138 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1139 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1140 | &remote_set_cmdlist); |
d471ea57 | 1141 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1142 | &remote_show_cmdlist); |
d471ea57 | 1143 | } |
5a2468f5 JM |
1144 | } |
1145 | ||
d471ea57 | 1146 | static enum packet_result |
a76d924d | 1147 | packet_check_result (const char *buf) |
5a2468f5 | 1148 | { |
d471ea57 | 1149 | if (buf[0] != '\0') |
5a2468f5 | 1150 | { |
d471ea57 | 1151 | /* The stub recognized the packet request. Check that the |
23860348 | 1152 | operation succeeded. */ |
a76d924d DJ |
1153 | if (buf[0] == 'E' |
1154 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1155 | && buf[3] == '\0') | |
1156 | /* "Enn" - definitly an error. */ | |
1157 | return PACKET_ERROR; | |
1158 | ||
1159 | /* Always treat "E." as an error. This will be used for | |
1160 | more verbose error messages, such as E.memtypes. */ | |
1161 | if (buf[0] == 'E' && buf[1] == '.') | |
1162 | return PACKET_ERROR; | |
1163 | ||
1164 | /* The packet may or may not be OK. Just assume it is. */ | |
1165 | return PACKET_OK; | |
1166 | } | |
1167 | else | |
1168 | /* The stub does not support the packet. */ | |
1169 | return PACKET_UNKNOWN; | |
1170 | } | |
1171 | ||
1172 | static enum packet_result | |
1173 | packet_ok (const char *buf, struct packet_config *config) | |
1174 | { | |
1175 | enum packet_result result; | |
1176 | ||
1177 | result = packet_check_result (buf); | |
1178 | switch (result) | |
1179 | { | |
1180 | case PACKET_OK: | |
1181 | case PACKET_ERROR: | |
1182 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1183 | switch (config->support) |
1184 | { | |
1185 | case PACKET_SUPPORT_UNKNOWN: | |
1186 | if (remote_debug) | |
1187 | fprintf_unfiltered (gdb_stdlog, | |
1188 | "Packet %s (%s) is supported\n", | |
1189 | config->name, config->title); | |
1190 | config->support = PACKET_ENABLE; | |
1191 | break; | |
1192 | case PACKET_DISABLE: | |
8e65ff28 | 1193 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1194 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1195 | break; |
1196 | case PACKET_ENABLE: | |
1197 | break; | |
1198 | } | |
a76d924d DJ |
1199 | break; |
1200 | case PACKET_UNKNOWN: | |
23860348 | 1201 | /* The stub does not support the packet. */ |
d471ea57 AC |
1202 | switch (config->support) |
1203 | { | |
1204 | case PACKET_ENABLE: | |
7f19b9a2 | 1205 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1206 | /* If the stub previously indicated that the packet was |
23860348 | 1207 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1208 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1209 | config->name, config->title); |
1210 | else | |
23860348 | 1211 | /* The user set it wrong. */ |
8a3fe4f8 | 1212 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1213 | config->name, config->title); |
1214 | break; | |
1215 | case PACKET_SUPPORT_UNKNOWN: | |
1216 | if (remote_debug) | |
1217 | fprintf_unfiltered (gdb_stdlog, | |
1218 | "Packet %s (%s) is NOT supported\n", | |
1219 | config->name, config->title); | |
1220 | config->support = PACKET_DISABLE; | |
1221 | break; | |
1222 | case PACKET_DISABLE: | |
1223 | break; | |
1224 | } | |
a76d924d | 1225 | break; |
5a2468f5 | 1226 | } |
a76d924d DJ |
1227 | |
1228 | return result; | |
5a2468f5 JM |
1229 | } |
1230 | ||
444abaca DJ |
1231 | enum { |
1232 | PACKET_vCont = 0, | |
1233 | PACKET_X, | |
1234 | PACKET_qSymbol, | |
1235 | PACKET_P, | |
1236 | PACKET_p, | |
1237 | PACKET_Z0, | |
1238 | PACKET_Z1, | |
1239 | PACKET_Z2, | |
1240 | PACKET_Z3, | |
1241 | PACKET_Z4, | |
a6b151f1 DJ |
1242 | PACKET_vFile_open, |
1243 | PACKET_vFile_pread, | |
1244 | PACKET_vFile_pwrite, | |
1245 | PACKET_vFile_close, | |
1246 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1247 | PACKET_vFile_readlink, |
0876f84a | 1248 | PACKET_qXfer_auxv, |
23181151 | 1249 | PACKET_qXfer_features, |
cfa9d6d9 | 1250 | PACKET_qXfer_libraries, |
2268b414 | 1251 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1252 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1253 | PACKET_qXfer_spu_read, |
1254 | PACKET_qXfer_spu_write, | |
07e059b5 | 1255 | PACKET_qXfer_osdata, |
dc146f7c | 1256 | PACKET_qXfer_threads, |
0fb4aa4b | 1257 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1258 | PACKET_qXfer_traceframe_info, |
711e434b | 1259 | PACKET_qGetTIBAddr, |
444abaca | 1260 | PACKET_qGetTLSAddr, |
be2a5f71 | 1261 | PACKET_qSupported, |
89be2091 | 1262 | PACKET_QPassSignals, |
08388c79 | 1263 | PACKET_qSearch_memory, |
2d717e4f DJ |
1264 | PACKET_vAttach, |
1265 | PACKET_vRun, | |
a6f3e723 | 1266 | PACKET_QStartNoAckMode, |
82f73884 | 1267 | PACKET_vKill, |
4aa995e1 PA |
1268 | PACKET_qXfer_siginfo_read, |
1269 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1270 | PACKET_qAttached, |
782b2b07 | 1271 | PACKET_ConditionalTracepoints, |
3788aec7 | 1272 | PACKET_ConditionalBreakpoints, |
7a697b8d | 1273 | PACKET_FastTracepoints, |
0fb4aa4b | 1274 | PACKET_StaticTracepoints, |
1e4d1764 | 1275 | PACKET_InstallInTrace, |
40ab02ce MS |
1276 | PACKET_bc, |
1277 | PACKET_bs, | |
409873ef | 1278 | PACKET_TracepointSource, |
d914c394 | 1279 | PACKET_QAllow, |
78d85199 | 1280 | PACKET_qXfer_fdpic, |
03583c20 | 1281 | PACKET_QDisableRandomization, |
444abaca DJ |
1282 | PACKET_MAX |
1283 | }; | |
506fb367 | 1284 | |
444abaca | 1285 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1286 | |
1287 | static void | |
444abaca DJ |
1288 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1289 | struct cmd_list_element *c) | |
dc8acb97 | 1290 | { |
444abaca | 1291 | struct packet_config *packet; |
dc8acb97 | 1292 | |
444abaca DJ |
1293 | for (packet = remote_protocol_packets; |
1294 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1295 | packet++) | |
1296 | { | |
1297 | if (&packet->detect == c->var) | |
1298 | { | |
1299 | update_packet_config (packet); | |
1300 | return; | |
1301 | } | |
1302 | } | |
9b20d036 | 1303 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1304 | c->name); |
dc8acb97 MS |
1305 | } |
1306 | ||
5a2468f5 | 1307 | static void |
444abaca DJ |
1308 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1309 | struct cmd_list_element *c, | |
1310 | const char *value) | |
5a2468f5 | 1311 | { |
444abaca | 1312 | struct packet_config *packet; |
5a2468f5 | 1313 | |
444abaca DJ |
1314 | for (packet = remote_protocol_packets; |
1315 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1316 | packet++) | |
1317 | { | |
1318 | if (&packet->detect == c->var) | |
1319 | { | |
1320 | show_packet_config_cmd (packet); | |
1321 | return; | |
1322 | } | |
1323 | } | |
9b20d036 | 1324 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1325 | c->name); |
5a2468f5 JM |
1326 | } |
1327 | ||
d471ea57 AC |
1328 | /* Should we try one of the 'Z' requests? */ |
1329 | ||
1330 | enum Z_packet_type | |
1331 | { | |
1332 | Z_PACKET_SOFTWARE_BP, | |
1333 | Z_PACKET_HARDWARE_BP, | |
1334 | Z_PACKET_WRITE_WP, | |
1335 | Z_PACKET_READ_WP, | |
1336 | Z_PACKET_ACCESS_WP, | |
1337 | NR_Z_PACKET_TYPES | |
1338 | }; | |
96baa820 | 1339 | |
d471ea57 | 1340 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1341 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1342 | |
7f19b9a2 | 1343 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1344 | |
1345 | static void | |
fba45db2 KB |
1346 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1347 | struct cmd_list_element *c) | |
96baa820 | 1348 | { |
d471ea57 | 1349 | int i; |
a744cf53 | 1350 | |
d471ea57 AC |
1351 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1352 | { | |
444abaca DJ |
1353 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1354 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1355 | } |
96baa820 JM |
1356 | } |
1357 | ||
1358 | static void | |
08546159 AC |
1359 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1360 | struct cmd_list_element *c, | |
1361 | const char *value) | |
96baa820 | 1362 | { |
d471ea57 | 1363 | int i; |
a744cf53 | 1364 | |
d471ea57 AC |
1365 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1366 | { | |
444abaca | 1367 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1368 | } |
96baa820 JM |
1369 | } |
1370 | ||
9d1f7ab2 MS |
1371 | /* Should we try the 'ThreadInfo' query packet? |
1372 | ||
1373 | This variable (NOT available to the user: auto-detect only!) | |
1374 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1375 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1376 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1377 | and set to false when the target fails to recognize it). */ |
1378 | ||
1379 | static int use_threadinfo_query; | |
1380 | static int use_threadextra_query; | |
1381 | ||
23860348 | 1382 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1383 | static struct async_signal_handler *sigint_remote_twice_token; |
1384 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1385 | |
74531fed PA |
1386 | \f |
1387 | /* Asynchronous signal handle registered as event loop source for | |
1388 | when we have pending events ready to be passed to the core. */ | |
1389 | ||
1390 | static struct async_event_handler *remote_async_inferior_event_token; | |
1391 | ||
1392 | /* Asynchronous signal handle registered as event loop source for when | |
1393 | the remote sent us a %Stop notification. The registered callback | |
1394 | will do a vStopped sequence to pull the rest of the events out of | |
1395 | the remote side into our event queue. */ | |
1396 | ||
1397 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1398 | \f |
1399 | ||
79d7f229 PA |
1400 | static ptid_t magic_null_ptid; |
1401 | static ptid_t not_sent_ptid; | |
1402 | static ptid_t any_thread_ptid; | |
1403 | ||
1404 | /* These are the threads which we last sent to the remote system. The | |
1405 | TID member will be -1 for all or -2 for not sent yet. */ | |
1406 | ||
1407 | static ptid_t general_thread; | |
1408 | static ptid_t continue_thread; | |
c5aa993b | 1409 | |
e6e4e701 PA |
1410 | /* This the traceframe which we last selected on the remote system. |
1411 | It will be -1 if no traceframe is selected. */ | |
1412 | static int remote_traceframe_number = -1; | |
1413 | ||
0b16c5cf PA |
1414 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1415 | detach instead of killing it when bailing out). */ | |
1416 | ||
1417 | static int | |
1418 | remote_query_attached (int pid) | |
1419 | { | |
1420 | struct remote_state *rs = get_remote_state (); | |
1421 | ||
1422 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1423 | return 0; | |
1424 | ||
1425 | if (remote_multi_process_p (rs)) | |
1426 | sprintf (rs->buf, "qAttached:%x", pid); | |
1427 | else | |
1428 | sprintf (rs->buf, "qAttached"); | |
1429 | ||
1430 | putpkt (rs->buf); | |
1431 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1432 | ||
1433 | switch (packet_ok (rs->buf, | |
1554e9be | 1434 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1435 | { |
1436 | case PACKET_OK: | |
1437 | if (strcmp (rs->buf, "1") == 0) | |
1438 | return 1; | |
1439 | break; | |
1440 | case PACKET_ERROR: | |
1441 | warning (_("Remote failure reply: %s"), rs->buf); | |
1442 | break; | |
1443 | case PACKET_UNKNOWN: | |
1444 | break; | |
1445 | } | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
49c62f2e PA |
1450 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1451 | has been invented by GDB, instead of reported by the target. Since | |
1452 | we can be connected to a remote system before before knowing about | |
1453 | any inferior, mark the target with execution when we find the first | |
1454 | inferior. If ATTACHED is 1, then we had just attached to this | |
1455 | inferior. If it is 0, then we just created this inferior. If it | |
1456 | is -1, then try querying the remote stub to find out if it had | |
1457 | attached to the inferior or not. */ | |
1941c569 PA |
1458 | |
1459 | static struct inferior * | |
49c62f2e | 1460 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1461 | { |
1941c569 PA |
1462 | struct inferior *inf; |
1463 | ||
0b16c5cf PA |
1464 | /* Check whether this process we're learning about is to be |
1465 | considered attached, or if is to be considered to have been | |
1466 | spawned by the stub. */ | |
1467 | if (attached == -1) | |
1468 | attached = remote_query_attached (pid); | |
1469 | ||
6c95b8df PA |
1470 | if (gdbarch_has_global_solist (target_gdbarch)) |
1471 | { | |
1472 | /* If the target shares code across all inferiors, then every | |
1473 | attach adds a new inferior. */ | |
1474 | inf = add_inferior (pid); | |
1475 | ||
1476 | /* ... and every inferior is bound to the same program space. | |
1477 | However, each inferior may still have its own address | |
1478 | space. */ | |
1479 | inf->aspace = maybe_new_address_space (); | |
1480 | inf->pspace = current_program_space; | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | /* In the traditional debugging scenario, there's a 1-1 match | |
1485 | between program/address spaces. We simply bind the inferior | |
1486 | to the program space's address space. */ | |
1487 | inf = current_inferior (); | |
1488 | inferior_appeared (inf, pid); | |
1489 | } | |
1941c569 | 1490 | |
0b16c5cf | 1491 | inf->attach_flag = attached; |
49c62f2e | 1492 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1493 | |
1941c569 PA |
1494 | return inf; |
1495 | } | |
1496 | ||
1497 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1498 | according to RUNNING. */ | |
1499 | ||
c906108c | 1500 | static void |
1941c569 | 1501 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1502 | { |
1941c569 PA |
1503 | add_thread (ptid); |
1504 | ||
1505 | set_executing (ptid, running); | |
1506 | set_running (ptid, running); | |
1507 | } | |
1508 | ||
1509 | /* Come here when we learn about a thread id from the remote target. | |
1510 | It may be the first time we hear about such thread, so take the | |
1511 | opportunity to add it to GDB's thread list. In case this is the | |
1512 | first time we're noticing its corresponding inferior, add it to | |
1513 | GDB's inferior list as well. */ | |
1514 | ||
1515 | static void | |
1516 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1517 | { | |
c906108c SS |
1518 | /* If this is a new thread, add it to GDB's thread list. |
1519 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1520 | |
1521 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1522 | { | |
1523 | /* We're seeing an event on a thread id we knew had exited. | |
1524 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1525 | remote_add_thread (currthread, running); |
82f73884 PA |
1526 | return; |
1527 | } | |
1528 | ||
79d7f229 | 1529 | if (!in_thread_list (currthread)) |
c0a2216e | 1530 | { |
1941c569 | 1531 | struct inferior *inf = NULL; |
bad34192 | 1532 | int pid = ptid_get_pid (currthread); |
1941c569 | 1533 | |
bad34192 PA |
1534 | if (ptid_is_pid (inferior_ptid) |
1535 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1536 | { |
1537 | /* inferior_ptid has no thread member yet. This can happen | |
1538 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1539 | stub doesn't support qC. This is the first stop reported | |
1540 | after an attach, so this is the main thread. Update the | |
1541 | ptid in the thread list. */ | |
bad34192 PA |
1542 | if (in_thread_list (pid_to_ptid (pid))) |
1543 | thread_change_ptid (inferior_ptid, currthread); | |
1544 | else | |
1545 | { | |
1546 | remote_add_thread (currthread, running); | |
1547 | inferior_ptid = currthread; | |
1548 | } | |
dc146f7c | 1549 | return; |
c0a2216e | 1550 | } |
82f73884 PA |
1551 | |
1552 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1553 | { |
1554 | /* inferior_ptid is not set yet. This can happen with the | |
1555 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1556 | doesn't support qC. This is the first stop reported | |
1557 | after an attach, so this is the main thread. Update the | |
1558 | ptid in the thread list. */ | |
dc146f7c | 1559 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1560 | return; |
c0a2216e | 1561 | } |
82f73884 | 1562 | |
29c87f7f PA |
1563 | /* When connecting to a target remote, or to a target |
1564 | extended-remote which already was debugging an inferior, we | |
1565 | may not know about it yet. Add it before adding its child | |
1566 | thread, so notifications are emitted in a sensible order. */ | |
1567 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1568 | { |
1569 | struct remote_state *rs = get_remote_state (); | |
1570 | int fake_pid_p = !remote_multi_process_p (rs); | |
1571 | ||
1572 | inf = remote_add_inferior (fake_pid_p, | |
1573 | ptid_get_pid (currthread), -1); | |
1574 | } | |
29c87f7f | 1575 | |
82f73884 | 1576 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1577 | remote_add_thread (currthread, running); |
1578 | ||
1579 | /* If we found a new inferior, let the common code do whatever | |
1580 | it needs to with it (e.g., read shared libraries, insert | |
1581 | breakpoints). */ | |
1582 | if (inf != NULL) | |
1583 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1584 | } |
c906108c SS |
1585 | } |
1586 | ||
dc146f7c VP |
1587 | /* Return the private thread data, creating it if necessary. */ |
1588 | ||
1589 | struct private_thread_info * | |
1590 | demand_private_info (ptid_t ptid) | |
1591 | { | |
1592 | struct thread_info *info = find_thread_ptid (ptid); | |
1593 | ||
1594 | gdb_assert (info); | |
1595 | ||
1596 | if (!info->private) | |
1597 | { | |
1598 | info->private = xmalloc (sizeof (*(info->private))); | |
1599 | info->private_dtor = free_private_thread_info; | |
1600 | info->private->core = -1; | |
1601 | info->private->extra = 0; | |
1602 | } | |
1603 | ||
1604 | return info->private; | |
1605 | } | |
1606 | ||
74531fed PA |
1607 | /* Call this function as a result of |
1608 | 1) A halt indication (T packet) containing a thread id | |
1609 | 2) A direct query of currthread | |
0df8b418 | 1610 | 3) Successful execution of set thread */ |
74531fed PA |
1611 | |
1612 | static void | |
1613 | record_currthread (ptid_t currthread) | |
1614 | { | |
1615 | general_thread = currthread; | |
74531fed PA |
1616 | } |
1617 | ||
89be2091 DJ |
1618 | static char *last_pass_packet; |
1619 | ||
1620 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1621 | it can simply pass through to the inferior without reporting. */ | |
1622 | ||
1623 | static void | |
2455069d | 1624 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1625 | { |
1626 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1627 | { | |
1628 | char *pass_packet, *p; | |
89be2091 DJ |
1629 | int count = 0, i; |
1630 | ||
1631 | gdb_assert (numsigs < 256); | |
1632 | for (i = 0; i < numsigs; i++) | |
1633 | { | |
2455069d | 1634 | if (pass_signals[i]) |
89be2091 DJ |
1635 | count++; |
1636 | } | |
1637 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1638 | strcpy (pass_packet, "QPassSignals:"); | |
1639 | p = pass_packet + strlen (pass_packet); | |
1640 | for (i = 0; i < numsigs; i++) | |
1641 | { | |
2455069d | 1642 | if (pass_signals[i]) |
89be2091 DJ |
1643 | { |
1644 | if (i >= 16) | |
1645 | *p++ = tohex (i >> 4); | |
1646 | *p++ = tohex (i & 15); | |
1647 | if (count) | |
1648 | *p++ = ';'; | |
1649 | else | |
1650 | break; | |
1651 | count--; | |
1652 | } | |
1653 | } | |
1654 | *p = 0; | |
1655 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1656 | { | |
1657 | struct remote_state *rs = get_remote_state (); | |
1658 | char *buf = rs->buf; | |
1659 | ||
1660 | putpkt (pass_packet); | |
1661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1662 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1663 | if (last_pass_packet) | |
1664 | xfree (last_pass_packet); | |
1665 | last_pass_packet = pass_packet; | |
1666 | } | |
1667 | else | |
1668 | xfree (pass_packet); | |
1669 | } | |
1670 | } | |
1671 | ||
79d7f229 PA |
1672 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1673 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1674 | thread. If GEN is set, set the general thread, if not, then set | |
1675 | the step/continue thread. */ | |
c906108c | 1676 | static void |
79d7f229 | 1677 | set_thread (struct ptid ptid, int gen) |
c906108c | 1678 | { |
d01949b6 | 1679 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1680 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1681 | char *buf = rs->buf; |
79d7f229 | 1682 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1683 | |
79d7f229 | 1684 | if (ptid_equal (state, ptid)) |
c906108c SS |
1685 | return; |
1686 | ||
79d7f229 PA |
1687 | *buf++ = 'H'; |
1688 | *buf++ = gen ? 'g' : 'c'; | |
1689 | if (ptid_equal (ptid, magic_null_ptid)) | |
1690 | xsnprintf (buf, endbuf - buf, "0"); | |
1691 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1692 | xsnprintf (buf, endbuf - buf, "0"); | |
1693 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1694 | xsnprintf (buf, endbuf - buf, "-1"); | |
1695 | else | |
82f73884 | 1696 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1697 | putpkt (rs->buf); |
6d820c5c | 1698 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1699 | if (gen) |
79d7f229 | 1700 | general_thread = ptid; |
c906108c | 1701 | else |
79d7f229 | 1702 | continue_thread = ptid; |
c906108c | 1703 | } |
79d7f229 PA |
1704 | |
1705 | static void | |
1706 | set_general_thread (struct ptid ptid) | |
1707 | { | |
1708 | set_thread (ptid, 1); | |
1709 | } | |
1710 | ||
1711 | static void | |
1712 | set_continue_thread (struct ptid ptid) | |
1713 | { | |
1714 | set_thread (ptid, 0); | |
1715 | } | |
1716 | ||
3c9c4b83 PA |
1717 | /* Change the remote current process. Which thread within the process |
1718 | ends up selected isn't important, as long as it is the same process | |
1719 | as what INFERIOR_PTID points to. | |
1720 | ||
1721 | This comes from that fact that there is no explicit notion of | |
1722 | "selected process" in the protocol. The selected process for | |
1723 | general operations is the process the selected general thread | |
1724 | belongs to. */ | |
1725 | ||
1726 | static void | |
1727 | set_general_process (void) | |
1728 | { | |
1729 | struct remote_state *rs = get_remote_state (); | |
1730 | ||
1731 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1732 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1733 | return; |
1734 | ||
1735 | /* We only need to change the remote current thread if it's pointing | |
1736 | at some other process. */ | |
1737 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1738 | set_general_thread (inferior_ptid); | |
1739 | } | |
1740 | ||
c906108c | 1741 | \f |
79d7f229 PA |
1742 | /* Return nonzero if the thread PTID is still alive on the remote |
1743 | system. */ | |
c906108c SS |
1744 | |
1745 | static int | |
28439f5e | 1746 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1747 | { |
6d820c5c | 1748 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1749 | char *p, *endp; |
c906108c | 1750 | |
c0a2216e PA |
1751 | if (ptid_equal (ptid, magic_null_ptid)) |
1752 | /* The main thread is always alive. */ | |
1753 | return 1; | |
1754 | ||
1755 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1756 | /* The main thread is always alive. This can happen after a | |
1757 | vAttach, if the remote side doesn't support | |
1758 | multi-threading. */ | |
1759 | return 1; | |
1760 | ||
82f73884 PA |
1761 | p = rs->buf; |
1762 | endp = rs->buf + get_remote_packet_size (); | |
1763 | ||
1764 | *p++ = 'T'; | |
1765 | write_ptid (p, endp, ptid); | |
1766 | ||
2e9f7625 | 1767 | putpkt (rs->buf); |
6d820c5c | 1768 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1769 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1770 | } |
1771 | ||
1772 | /* About these extended threadlist and threadinfo packets. They are | |
1773 | variable length packets but, the fields within them are often fixed | |
1774 | length. They are redundent enough to send over UDP as is the | |
1775 | remote protocol in general. There is a matching unit test module | |
1776 | in libstub. */ | |
1777 | ||
cce74817 JM |
1778 | #define OPAQUETHREADBYTES 8 |
1779 | ||
1780 | /* a 64 bit opaque identifier */ | |
1781 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1782 | ||
23860348 | 1783 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1784 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1785 | changable. */ |
cce74817 JM |
1786 | |
1787 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1788 | Plan to fix this. */ |
cce74817 | 1789 | |
23860348 | 1790 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1791 | |
9d1f7ab2 | 1792 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1793 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1794 | |
1795 | struct gdb_ext_thread_info | |
c5aa993b | 1796 | { |
23860348 | 1797 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1798 | int active; /* Has state interesting to GDB? |
23860348 | 1799 | regs, stack. */ |
2bc416ba | 1800 | char display[256]; /* Brief state display, name, |
cedea757 | 1801 | blocked/suspended. */ |
23860348 | 1802 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1803 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1804 | whatever. */ |
c5aa993b | 1805 | }; |
cce74817 JM |
1806 | |
1807 | /* The volume of remote transfers can be limited by submitting | |
1808 | a mask containing bits specifying the desired information. | |
1809 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1810 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1811 | |
1812 | #define TAG_THREADID 1 | |
1813 | #define TAG_EXISTS 2 | |
1814 | #define TAG_DISPLAY 4 | |
1815 | #define TAG_THREADNAME 8 | |
c5aa993b | 1816 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1817 | |
23860348 | 1818 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1819 | |
b2dd6311 | 1820 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1821 | |
a14ed312 | 1822 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1823 | |
a14ed312 | 1824 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1825 | |
23860348 | 1826 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1827 | |
a14ed312 | 1828 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1829 | |
a14ed312 | 1830 | static char *pack_int (char *buf, int value); |
cce74817 | 1831 | |
a14ed312 | 1832 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1833 | |
a14ed312 | 1834 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1835 | |
23860348 | 1836 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1837 | |
23860348 | 1838 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1839 | |
23860348 | 1840 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1841 | |
23860348 | 1842 | static int threadref_to_int (threadref *ref); |
cce74817 | 1843 | |
23860348 | 1844 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1845 | |
23860348 | 1846 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1847 | |
2bc416ba | 1848 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1849 | threadref *id); |
cce74817 | 1850 | |
a14ed312 | 1851 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1852 | threadref *expectedref, |
a14ed312 KB |
1853 | struct gdb_ext_thread_info |
1854 | *info); | |
cce74817 JM |
1855 | |
1856 | ||
2bc416ba | 1857 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1858 | int fieldset, /*TAG mask */ |
a14ed312 | 1859 | struct gdb_ext_thread_info *info); |
cce74817 | 1860 | |
a14ed312 KB |
1861 | static char *pack_threadlist_request (char *pkt, int startflag, |
1862 | int threadcount, | |
23860348 | 1863 | threadref *nextthread); |
cce74817 | 1864 | |
a14ed312 KB |
1865 | static int parse_threadlist_response (char *pkt, |
1866 | int result_limit, | |
23860348 | 1867 | threadref *original_echo, |
2bc416ba | 1868 | threadref *resultlist, |
23860348 | 1869 | int *doneflag); |
cce74817 | 1870 | |
a14ed312 | 1871 | static int remote_get_threadlist (int startflag, |
23860348 | 1872 | threadref *nextthread, |
a14ed312 KB |
1873 | int result_limit, |
1874 | int *done, | |
2bc416ba | 1875 | int *result_count, |
23860348 | 1876 | threadref *threadlist); |
cce74817 | 1877 | |
23860348 | 1878 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1879 | |
a14ed312 KB |
1880 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1881 | void *context, int looplimit); | |
cce74817 | 1882 | |
23860348 | 1883 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1884 | |
82f73884 PA |
1885 | |
1886 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1887 | buffer we're allowed to write to. Returns | |
1888 | BUF+CHARACTERS_WRITTEN. */ | |
1889 | ||
1890 | static char * | |
1891 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1892 | { | |
1893 | int pid, tid; | |
1894 | struct remote_state *rs = get_remote_state (); | |
1895 | ||
1896 | if (remote_multi_process_p (rs)) | |
1897 | { | |
1898 | pid = ptid_get_pid (ptid); | |
1899 | if (pid < 0) | |
1900 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1901 | else | |
1902 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1903 | } | |
1904 | tid = ptid_get_tid (ptid); | |
1905 | if (tid < 0) | |
1906 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1907 | else | |
1908 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1909 | ||
1910 | return buf; | |
1911 | } | |
1912 | ||
1913 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1914 | passed the last parsed char. Returns null_ptid on error. */ | |
1915 | ||
1916 | static ptid_t | |
1917 | read_ptid (char *buf, char **obuf) | |
1918 | { | |
1919 | char *p = buf; | |
1920 | char *pp; | |
1921 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1922 | |
1923 | if (*p == 'p') | |
1924 | { | |
1925 | /* Multi-process ptid. */ | |
1926 | pp = unpack_varlen_hex (p + 1, &pid); | |
1927 | if (*pp != '.') | |
b37520b6 | 1928 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1929 | |
1930 | p = pp; | |
1931 | pp = unpack_varlen_hex (p + 1, &tid); | |
1932 | if (obuf) | |
1933 | *obuf = pp; | |
1934 | return ptid_build (pid, 0, tid); | |
1935 | } | |
1936 | ||
1937 | /* No multi-process. Just a tid. */ | |
1938 | pp = unpack_varlen_hex (p, &tid); | |
1939 | ||
1940 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1941 | what's in inferior_ptid, unless it's null at this point. If so, |
1942 | then since there's no way to know the pid of the reported | |
1943 | threads, use the magic number. */ | |
1944 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1945 | pid = ptid_get_pid (magic_null_ptid); | |
1946 | else | |
1947 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1948 | |
1949 | if (obuf) | |
1950 | *obuf = pp; | |
1951 | return ptid_build (pid, 0, tid); | |
1952 | } | |
1953 | ||
23860348 | 1954 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1955 | |
1956 | static const char hexchars[] = "0123456789abcdef"; | |
1957 | ||
1958 | static int | |
fba45db2 | 1959 | ishex (int ch, int *val) |
c906108c SS |
1960 | { |
1961 | if ((ch >= 'a') && (ch <= 'f')) | |
1962 | { | |
1963 | *val = ch - 'a' + 10; | |
1964 | return 1; | |
1965 | } | |
1966 | if ((ch >= 'A') && (ch <= 'F')) | |
1967 | { | |
1968 | *val = ch - 'A' + 10; | |
1969 | return 1; | |
1970 | } | |
1971 | if ((ch >= '0') && (ch <= '9')) | |
1972 | { | |
1973 | *val = ch - '0'; | |
1974 | return 1; | |
1975 | } | |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | static int | |
fba45db2 | 1980 | stubhex (int ch) |
c906108c SS |
1981 | { |
1982 | if (ch >= 'a' && ch <= 'f') | |
1983 | return ch - 'a' + 10; | |
1984 | if (ch >= '0' && ch <= '9') | |
1985 | return ch - '0'; | |
1986 | if (ch >= 'A' && ch <= 'F') | |
1987 | return ch - 'A' + 10; | |
1988 | return -1; | |
1989 | } | |
1990 | ||
1991 | static int | |
fba45db2 | 1992 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1993 | { |
1994 | int nibble; | |
1995 | int retval = 0; | |
1996 | ||
1997 | while (fieldlength) | |
1998 | { | |
1999 | nibble = stubhex (*buff++); | |
2000 | retval |= nibble; | |
2001 | fieldlength--; | |
2002 | if (fieldlength) | |
2003 | retval = retval << 4; | |
2004 | } | |
2005 | return retval; | |
2006 | } | |
2007 | ||
2008 | char * | |
fba45db2 | 2009 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2010 | ULONGEST *result) |
c906108c SS |
2011 | { |
2012 | int nibble; | |
d49c44d5 | 2013 | ULONGEST retval = 0; |
c906108c SS |
2014 | |
2015 | while (ishex (*buff, &nibble)) | |
2016 | { | |
2017 | buff++; | |
2018 | retval = retval << 4; | |
2019 | retval |= nibble & 0x0f; | |
2020 | } | |
2021 | *result = retval; | |
2022 | return buff; | |
2023 | } | |
2024 | ||
2025 | static char * | |
fba45db2 | 2026 | unpack_nibble (char *buf, int *val) |
c906108c | 2027 | { |
b7589f7d | 2028 | *val = fromhex (*buf++); |
c906108c SS |
2029 | return buf; |
2030 | } | |
2031 | ||
2032 | static char * | |
fba45db2 | 2033 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2034 | { |
2035 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2036 | return buf; | |
2037 | } | |
2038 | ||
2039 | static char * | |
fba45db2 | 2040 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2041 | { |
2042 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2043 | *pkt++ = hexchars[(byte & 0xf)]; | |
2044 | return pkt; | |
2045 | } | |
2046 | ||
2047 | static char * | |
fba45db2 | 2048 | unpack_byte (char *buf, int *value) |
c906108c SS |
2049 | { |
2050 | *value = stub_unpack_int (buf, 2); | |
2051 | return buf + 2; | |
2052 | } | |
2053 | ||
2054 | static char * | |
fba45db2 | 2055 | pack_int (char *buf, int value) |
c906108c SS |
2056 | { |
2057 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2058 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2059 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2060 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2061 | return buf; | |
2062 | } | |
2063 | ||
2064 | static char * | |
fba45db2 | 2065 | unpack_int (char *buf, int *value) |
c906108c SS |
2066 | { |
2067 | *value = stub_unpack_int (buf, 8); | |
2068 | return buf + 8; | |
2069 | } | |
2070 | ||
23860348 | 2071 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2072 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2073 | |
2074 | static char * | |
fba45db2 | 2075 | pack_string (char *pkt, char *string) |
c906108c SS |
2076 | { |
2077 | char ch; | |
2078 | int len; | |
2079 | ||
2080 | len = strlen (string); | |
2081 | if (len > 200) | |
23860348 | 2082 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2083 | pkt = pack_hex_byte (pkt, len); |
2084 | while (len-- > 0) | |
2085 | { | |
2086 | ch = *string++; | |
2087 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2088 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2089 | *pkt++ = ch; |
2090 | } | |
2091 | return pkt; | |
2092 | } | |
2093 | #endif /* 0 (unused) */ | |
2094 | ||
2095 | static char * | |
fba45db2 | 2096 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2097 | { |
2098 | while (length--) | |
2099 | *dest++ = *src++; | |
2100 | *dest = '\0'; | |
2101 | return src; | |
2102 | } | |
2103 | ||
2104 | static char * | |
fba45db2 | 2105 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2106 | { |
2107 | char *limit; | |
2108 | unsigned char *altid; | |
2109 | ||
2110 | altid = (unsigned char *) id; | |
2111 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2112 | while (pkt < limit) | |
2113 | pkt = pack_hex_byte (pkt, *altid++); | |
2114 | return pkt; | |
2115 | } | |
2116 | ||
2117 | ||
2118 | static char * | |
fba45db2 | 2119 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2120 | { |
2121 | char *altref; | |
2122 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2123 | int x, y; | |
2124 | ||
2125 | altref = (char *) id; | |
2126 | ||
2127 | while (inbuf < limit) | |
2128 | { | |
2129 | x = stubhex (*inbuf++); | |
2130 | y = stubhex (*inbuf++); | |
2131 | *altref++ = (x << 4) | y; | |
2132 | } | |
2133 | return inbuf; | |
2134 | } | |
2135 | ||
2136 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2137 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2138 | to use 64bit thread references internally. This is an adapter |
2139 | function. */ | |
2140 | ||
2141 | void | |
fba45db2 | 2142 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2143 | { |
2144 | unsigned char *scan; | |
2145 | ||
2146 | scan = (unsigned char *) id; | |
2147 | { | |
2148 | int i = 4; | |
2149 | while (i--) | |
2150 | *scan++ = 0; | |
2151 | } | |
2152 | *scan++ = (value >> 24) & 0xff; | |
2153 | *scan++ = (value >> 16) & 0xff; | |
2154 | *scan++ = (value >> 8) & 0xff; | |
2155 | *scan++ = (value & 0xff); | |
2156 | } | |
2157 | ||
2158 | static int | |
fba45db2 | 2159 | threadref_to_int (threadref *ref) |
c906108c SS |
2160 | { |
2161 | int i, value = 0; | |
2162 | unsigned char *scan; | |
2163 | ||
cfd77fa1 | 2164 | scan = *ref; |
c906108c SS |
2165 | scan += 4; |
2166 | i = 4; | |
2167 | while (i-- > 0) | |
2168 | value = (value << 8) | ((*scan++) & 0xff); | |
2169 | return value; | |
2170 | } | |
2171 | ||
2172 | static void | |
fba45db2 | 2173 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2174 | { |
2175 | int i; | |
2176 | unsigned char *csrc, *cdest; | |
2177 | ||
2178 | csrc = (unsigned char *) src; | |
2179 | cdest = (unsigned char *) dest; | |
2180 | i = 8; | |
2181 | while (i--) | |
2182 | *cdest++ = *csrc++; | |
2183 | } | |
2184 | ||
2185 | static int | |
fba45db2 | 2186 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2187 | { |
23860348 | 2188 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2189 | #if 0 |
2190 | unsigned char *srcp, *destp; | |
2191 | int i, result; | |
2192 | srcp = (char *) src; | |
2193 | destp = (char *) dest; | |
2194 | ||
2195 | result = 1; | |
2196 | while (i-- > 0) | |
2197 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2198 | return result; | |
2199 | #endif | |
2200 | return 1; | |
2201 | } | |
2202 | ||
2203 | /* | |
c5aa993b JM |
2204 | threadid:1, # always request threadid |
2205 | context_exists:2, | |
2206 | display:4, | |
2207 | unique_name:8, | |
2208 | more_display:16 | |
2209 | */ | |
c906108c SS |
2210 | |
2211 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2212 | ||
2213 | static char * | |
fba45db2 | 2214 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2215 | { |
23860348 MS |
2216 | *pkt++ = 'q'; /* Info Query */ |
2217 | *pkt++ = 'P'; /* process or thread info */ | |
2218 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2219 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2220 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2221 | return pkt; |
2222 | } | |
2223 | ||
23860348 | 2224 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2225 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2226 | add more fields as time goes by. */ |
c906108c | 2227 | |
23860348 | 2228 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2229 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2230 | fetch registers and its stack? */ |
c5aa993b | 2231 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2232 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2233 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2234 | the process. */ |
c906108c SS |
2235 | |
2236 | static int | |
fba45db2 KB |
2237 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2238 | struct gdb_ext_thread_info *info) | |
c906108c | 2239 | { |
d01949b6 | 2240 | struct remote_state *rs = get_remote_state (); |
c906108c | 2241 | int mask, length; |
cfd77fa1 | 2242 | int tag; |
c906108c | 2243 | threadref ref; |
6d820c5c | 2244 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2245 | int retval = 1; |
2246 | ||
23860348 | 2247 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2248 | info->active = 0; |
2249 | info->display[0] = '\0'; | |
2250 | info->shortname[0] = '\0'; | |
2251 | info->more_display[0] = '\0'; | |
2252 | ||
23860348 MS |
2253 | /* Assume the characters indicating the packet type have been |
2254 | stripped. */ | |
c906108c SS |
2255 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2256 | pkt = unpack_threadid (pkt, &ref); | |
2257 | ||
2258 | if (mask == 0) | |
8a3fe4f8 | 2259 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2260 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2261 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2262 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2263 | return 0; |
2264 | } | |
2265 | copy_threadref (&info->threadid, &ref); | |
2266 | ||
23860348 | 2267 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2268 | |
23860348 MS |
2269 | /* Packets are terminated with nulls. */ |
2270 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2271 | { |
2272 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2273 | pkt = unpack_byte (pkt, &length); /* length */ |
2274 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2275 | { |
8a3fe4f8 | 2276 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2277 | retval = 0; |
2278 | break; | |
2279 | } | |
2280 | if (tag == TAG_THREADID) | |
2281 | { | |
2282 | if (length != 16) | |
2283 | { | |
8a3fe4f8 | 2284 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2285 | retval = 0; |
2286 | break; | |
2287 | } | |
2288 | pkt = unpack_threadid (pkt, &ref); | |
2289 | mask = mask & ~TAG_THREADID; | |
2290 | continue; | |
2291 | } | |
2292 | if (tag == TAG_EXISTS) | |
2293 | { | |
2294 | info->active = stub_unpack_int (pkt, length); | |
2295 | pkt += length; | |
2296 | mask = mask & ~(TAG_EXISTS); | |
2297 | if (length > 8) | |
2298 | { | |
8a3fe4f8 | 2299 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2300 | retval = 0; |
2301 | break; | |
2302 | } | |
2303 | continue; | |
2304 | } | |
2305 | if (tag == TAG_THREADNAME) | |
2306 | { | |
2307 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2308 | mask = mask & ~TAG_THREADNAME; | |
2309 | continue; | |
2310 | } | |
2311 | if (tag == TAG_DISPLAY) | |
2312 | { | |
2313 | pkt = unpack_string (pkt, &info->display[0], length); | |
2314 | mask = mask & ~TAG_DISPLAY; | |
2315 | continue; | |
2316 | } | |
2317 | if (tag == TAG_MOREDISPLAY) | |
2318 | { | |
2319 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2320 | mask = mask & ~TAG_MOREDISPLAY; | |
2321 | continue; | |
2322 | } | |
8a3fe4f8 | 2323 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2324 | break; /* Not a tag we know about. */ |
c906108c SS |
2325 | } |
2326 | return retval; | |
2327 | } | |
2328 | ||
2329 | static int | |
fba45db2 KB |
2330 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2331 | struct gdb_ext_thread_info *info) | |
c906108c | 2332 | { |
d01949b6 | 2333 | struct remote_state *rs = get_remote_state (); |
c906108c | 2334 | int result; |
c906108c | 2335 | |
2e9f7625 DJ |
2336 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2337 | putpkt (rs->buf); | |
6d820c5c | 2338 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2339 | |
2340 | if (rs->buf[0] == '\0') | |
2341 | return 0; | |
2342 | ||
2e9f7625 | 2343 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2344 | threadid, info); |
c906108c SS |
2345 | return result; |
2346 | } | |
2347 | ||
c906108c SS |
2348 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2349 | ||
2350 | static char * | |
fba45db2 KB |
2351 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2352 | threadref *nextthread) | |
c906108c SS |
2353 | { |
2354 | *pkt++ = 'q'; /* info query packet */ | |
2355 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2356 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2357 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2358 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2359 | *pkt = '\0'; | |
2360 | return pkt; | |
2361 | } | |
2362 | ||
2363 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2364 | ||
2365 | static int | |
fba45db2 KB |
2366 | parse_threadlist_response (char *pkt, int result_limit, |
2367 | threadref *original_echo, threadref *resultlist, | |
2368 | int *doneflag) | |
c906108c | 2369 | { |
d01949b6 | 2370 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2371 | char *limit; |
2372 | int count, resultcount, done; | |
2373 | ||
2374 | resultcount = 0; | |
2375 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2376 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2377 | /* done parse past here */ |
c906108c SS |
2378 | pkt = unpack_byte (pkt, &count); /* count field */ |
2379 | pkt = unpack_nibble (pkt, &done); | |
2380 | /* The first threadid is the argument threadid. */ | |
2381 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2382 | while ((count-- > 0) && (pkt < limit)) | |
2383 | { | |
2384 | pkt = unpack_threadid (pkt, resultlist++); | |
2385 | if (resultcount++ >= result_limit) | |
2386 | break; | |
2387 | } | |
2388 | if (doneflag) | |
2389 | *doneflag = done; | |
2390 | return resultcount; | |
2391 | } | |
2392 | ||
2393 | static int | |
fba45db2 KB |
2394 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2395 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2396 | { |
d01949b6 | 2397 | struct remote_state *rs = get_remote_state (); |
c906108c | 2398 | static threadref echo_nextthread; |
c906108c SS |
2399 | int result = 1; |
2400 | ||
23860348 | 2401 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2402 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2403 | >= get_remote_packet_size ()) | |
ea9c271d | 2404 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2405 | |
6d820c5c DJ |
2406 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2407 | putpkt (rs->buf); | |
2408 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2409 | |
d8f2712d | 2410 | if (*rs->buf == '\0') |
21bce120 | 2411 | return 0; |
d8f2712d VP |
2412 | else |
2413 | *result_count = | |
2414 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2415 | threadlist, done); | |
c906108c SS |
2416 | |
2417 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2418 | { | |
23860348 MS |
2419 | /* FIXME: This is a good reason to drop the packet. */ |
2420 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2421 | /* Possabilities : |
2422 | retransmit immediatly - race conditions | |
2423 | retransmit after timeout - yes | |
2424 | exit | |
2425 | wait for packet, then exit | |
2426 | */ | |
8a3fe4f8 | 2427 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2428 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2429 | } |
2430 | if (*result_count <= 0) | |
2431 | { | |
2432 | if (*done != 1) | |
2433 | { | |
8a3fe4f8 | 2434 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2435 | result = 0; |
2436 | } | |
2437 | return result; /* break; */ | |
2438 | } | |
2439 | if (*result_count > result_limit) | |
2440 | { | |
2441 | *result_count = 0; | |
8a3fe4f8 | 2442 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2443 | return 0; |
2444 | } | |
2445 | return result; | |
2446 | } | |
2447 | ||
23860348 MS |
2448 | /* This is the interface between remote and threads, remotes upper |
2449 | interface. */ | |
c906108c SS |
2450 | |
2451 | /* remote_find_new_threads retrieves the thread list and for each | |
2452 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2453 | adding the thread if it does not already exist. This involves |
c906108c SS |
2454 | getting partial thread lists from the remote target so, polling the |
2455 | quit_flag is required. */ | |
2456 | ||
2457 | ||
23860348 | 2458 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2459 | |
2460 | #define MAXTHREADLISTRESULTS 32 | |
2461 | ||
2462 | static int | |
fba45db2 KB |
2463 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2464 | int looplimit) | |
c906108c SS |
2465 | { |
2466 | int done, i, result_count; | |
2467 | int startflag = 1; | |
2468 | int result = 1; | |
2469 | int loopcount = 0; | |
2470 | static threadref nextthread; | |
2471 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2472 | ||
2473 | done = 0; | |
2474 | while (!done) | |
2475 | { | |
2476 | if (loopcount++ > looplimit) | |
2477 | { | |
2478 | result = 0; | |
8a3fe4f8 | 2479 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2480 | break; |
2481 | } | |
2482 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2483 | &done, &result_count, resultthreadlist)) | |
2484 | { | |
2485 | result = 0; | |
2486 | break; | |
2487 | } | |
23860348 | 2488 | /* Clear for later iterations. */ |
c906108c SS |
2489 | startflag = 0; |
2490 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2491 | if (result_count >= 1) | |
2492 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2493 | i = 0; | |
2494 | while (result_count--) | |
2495 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2496 | break; | |
2497 | } | |
2498 | return result; | |
2499 | } | |
2500 | ||
2501 | static int | |
fba45db2 | 2502 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2503 | { |
79d7f229 PA |
2504 | int pid = ptid_get_pid (inferior_ptid); |
2505 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2506 | |
2507 | if (!in_thread_list (ptid)) | |
2508 | add_thread (ptid); | |
c906108c SS |
2509 | return 1; /* continue iterator */ |
2510 | } | |
2511 | ||
2512 | #define CRAZY_MAX_THREADS 1000 | |
2513 | ||
39f77062 KB |
2514 | static ptid_t |
2515 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2516 | { |
d01949b6 | 2517 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2518 | |
2519 | putpkt ("qC"); | |
6d820c5c | 2520 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2521 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2522 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2523 | else |
2524 | return oldpid; | |
2525 | } | |
2526 | ||
802188a7 RM |
2527 | /* Find new threads for info threads command. |
2528 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2529 | */ |
cce74817 JM |
2530 | |
2531 | static void | |
fba45db2 | 2532 | remote_find_new_threads (void) |
c906108c | 2533 | { |
c5aa993b JM |
2534 | remote_threadlist_iterator (remote_newthread_step, 0, |
2535 | CRAZY_MAX_THREADS); | |
c906108c SS |
2536 | } |
2537 | ||
dc146f7c VP |
2538 | #if defined(HAVE_LIBEXPAT) |
2539 | ||
2540 | typedef struct thread_item | |
2541 | { | |
2542 | ptid_t ptid; | |
2543 | char *extra; | |
2544 | int core; | |
2545 | } thread_item_t; | |
2546 | DEF_VEC_O(thread_item_t); | |
2547 | ||
2548 | struct threads_parsing_context | |
2549 | { | |
2550 | VEC (thread_item_t) *items; | |
2551 | }; | |
2552 | ||
2553 | static void | |
2554 | start_thread (struct gdb_xml_parser *parser, | |
2555 | const struct gdb_xml_element *element, | |
2556 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2557 | { | |
2558 | struct threads_parsing_context *data = user_data; | |
2559 | ||
2560 | struct thread_item item; | |
2561 | char *id; | |
3d2c1d41 | 2562 | struct gdb_xml_value *attr; |
dc146f7c | 2563 | |
3d2c1d41 | 2564 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2565 | item.ptid = read_ptid (id, NULL); |
2566 | ||
3d2c1d41 PA |
2567 | attr = xml_find_attribute (attributes, "core"); |
2568 | if (attr != NULL) | |
2569 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2570 | else |
2571 | item.core = -1; | |
2572 | ||
2573 | item.extra = 0; | |
2574 | ||
2575 | VEC_safe_push (thread_item_t, data->items, &item); | |
2576 | } | |
2577 | ||
2578 | static void | |
2579 | end_thread (struct gdb_xml_parser *parser, | |
2580 | const struct gdb_xml_element *element, | |
2581 | void *user_data, const char *body_text) | |
2582 | { | |
2583 | struct threads_parsing_context *data = user_data; | |
2584 | ||
2585 | if (body_text && *body_text) | |
2ae2a0b7 | 2586 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2587 | } |
2588 | ||
2589 | const struct gdb_xml_attribute thread_attributes[] = { | |
2590 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2591 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2592 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2593 | }; | |
2594 | ||
2595 | const struct gdb_xml_element thread_children[] = { | |
2596 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2597 | }; | |
2598 | ||
2599 | const struct gdb_xml_element threads_children[] = { | |
2600 | { "thread", thread_attributes, thread_children, | |
2601 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2602 | start_thread, end_thread }, | |
2603 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2604 | }; | |
2605 | ||
2606 | const struct gdb_xml_element threads_elements[] = { | |
2607 | { "threads", NULL, threads_children, | |
2608 | GDB_XML_EF_NONE, NULL, NULL }, | |
2609 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2610 | }; | |
2611 | ||
02357a4a PA |
2612 | /* Discard the contents of the constructed thread info context. */ |
2613 | ||
2614 | static void | |
2615 | clear_threads_parsing_context (void *p) | |
2616 | { | |
2617 | struct threads_parsing_context *context = p; | |
2618 | int i; | |
2619 | struct thread_item *item; | |
2620 | ||
2621 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2622 | xfree (item->extra); | |
2623 | ||
2624 | VEC_free (thread_item_t, context->items); | |
2625 | } | |
2626 | ||
dc146f7c VP |
2627 | #endif |
2628 | ||
9d1f7ab2 MS |
2629 | /* |
2630 | * Find all threads for info threads command. | |
2631 | * Uses new thread protocol contributed by Cisco. | |
2632 | * Falls back and attempts to use the older method (above) | |
2633 | * if the target doesn't respond to the new method. | |
2634 | */ | |
2635 | ||
0f71a2f6 | 2636 | static void |
28439f5e | 2637 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2638 | { |
d01949b6 | 2639 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2640 | char *bufp; |
79d7f229 | 2641 | ptid_t new_thread; |
0f71a2f6 JM |
2642 | |
2643 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2644 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2645 | |
dc146f7c VP |
2646 | #if defined(HAVE_LIBEXPAT) |
2647 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2648 | { | |
2649 | char *xml = target_read_stralloc (¤t_target, | |
2650 | TARGET_OBJECT_THREADS, NULL); | |
2651 | ||
2652 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2653 | |
dc146f7c VP |
2654 | if (xml && *xml) |
2655 | { | |
dc146f7c | 2656 | struct threads_parsing_context context; |
dc146f7c | 2657 | |
efc0eabd PA |
2658 | context.items = NULL; |
2659 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2660 | |
efc0eabd PA |
2661 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2662 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2663 | { |
2664 | int i; | |
2665 | struct thread_item *item; | |
2666 | ||
3e43a32a MS |
2667 | for (i = 0; |
2668 | VEC_iterate (thread_item_t, context.items, i, item); | |
2669 | ++i) | |
dc146f7c VP |
2670 | { |
2671 | if (!ptid_equal (item->ptid, null_ptid)) | |
2672 | { | |
2673 | struct private_thread_info *info; | |
2674 | /* In non-stop mode, we assume new found threads | |
2675 | are running until proven otherwise with a | |
2676 | stop reply. In all-stop, we can only get | |
2677 | here if all threads are stopped. */ | |
2678 | int running = non_stop ? 1 : 0; | |
2679 | ||
2680 | remote_notice_new_inferior (item->ptid, running); | |
2681 | ||
2682 | info = demand_private_info (item->ptid); | |
2683 | info->core = item->core; | |
2684 | info->extra = item->extra; | |
02357a4a | 2685 | item->extra = NULL; |
dc146f7c | 2686 | } |
dc146f7c VP |
2687 | } |
2688 | } | |
dc146f7c VP |
2689 | } |
2690 | ||
2691 | do_cleanups (back_to); | |
2692 | return; | |
2693 | } | |
2694 | #endif | |
2695 | ||
9d1f7ab2 MS |
2696 | if (use_threadinfo_query) |
2697 | { | |
2698 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2699 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2700 | bufp = rs->buf; |
9d1f7ab2 | 2701 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2702 | { |
9d1f7ab2 MS |
2703 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2704 | { | |
2705 | do | |
2706 | { | |
82f73884 | 2707 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2708 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2709 | { |
74531fed | 2710 | /* In non-stop mode, we assume new found threads |
1941c569 | 2711 | are running until proven otherwise with a |
74531fed PA |
2712 | stop reply. In all-stop, we can only get |
2713 | here if all threads are stopped. */ | |
1941c569 PA |
2714 | int running = non_stop ? 1 : 0; |
2715 | ||
2716 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2717 | } |
9d1f7ab2 MS |
2718 | } |
2719 | while (*bufp++ == ','); /* comma-separated list */ | |
2720 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2721 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2722 | bufp = rs->buf; |
9d1f7ab2 MS |
2723 | } |
2724 | return; /* done */ | |
2725 | } | |
2726 | } | |
2727 | ||
74531fed PA |
2728 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2729 | if (non_stop) | |
2730 | return; | |
2731 | ||
23860348 | 2732 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2733 | use_threadinfo_query = 0; |
2734 | remote_find_new_threads (); | |
2735 | return; | |
2736 | } | |
2737 | ||
802188a7 | 2738 | /* |
9d1f7ab2 MS |
2739 | * Collect a descriptive string about the given thread. |
2740 | * The target may say anything it wants to about the thread | |
2741 | * (typically info about its blocked / runnable state, name, etc.). | |
2742 | * This string will appear in the info threads display. | |
802188a7 | 2743 | * |
9d1f7ab2 MS |
2744 | * Optional: targets are not required to implement this function. |
2745 | */ | |
2746 | ||
2747 | static char * | |
2748 | remote_threads_extra_info (struct thread_info *tp) | |
2749 | { | |
d01949b6 | 2750 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2751 | int result; |
2752 | int set; | |
2753 | threadref id; | |
2754 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2755 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2756 | int n = 0; /* position in display_buf */ |
2757 | ||
2758 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2759 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2760 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2761 | |
60e569b9 PA |
2762 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2763 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2764 | /* This is the main thread which was added by GDB. The remote | |
2765 | server doesn't know about it. */ | |
2766 | return NULL; | |
2767 | ||
dc146f7c VP |
2768 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2769 | { | |
2770 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2771 | |
dc146f7c VP |
2772 | if (info && info->private) |
2773 | return info->private->extra; | |
2774 | else | |
2775 | return NULL; | |
2776 | } | |
2777 | ||
9d1f7ab2 MS |
2778 | if (use_threadextra_query) |
2779 | { | |
82f73884 PA |
2780 | char *b = rs->buf; |
2781 | char *endb = rs->buf + get_remote_packet_size (); | |
2782 | ||
2783 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2784 | b += strlen (b); | |
2785 | write_ptid (b, endb, tp->ptid); | |
2786 | ||
2e9f7625 | 2787 | putpkt (rs->buf); |
6d820c5c | 2788 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2789 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2790 | { |
2e9f7625 DJ |
2791 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2792 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2793 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2794 | return display_buf; |
2795 | } | |
0f71a2f6 | 2796 | } |
9d1f7ab2 MS |
2797 | |
2798 | /* If the above query fails, fall back to the old method. */ | |
2799 | use_threadextra_query = 0; | |
2800 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2801 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2802 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2803 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2804 | if (threadinfo.active) | |
0f71a2f6 | 2805 | { |
9d1f7ab2 | 2806 | if (*threadinfo.shortname) |
2bc416ba | 2807 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2808 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2809 | if (*threadinfo.display) |
2bc416ba | 2810 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2811 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2812 | if (*threadinfo.more_display) |
2bc416ba | 2813 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2814 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2815 | |
2816 | if (n > 0) | |
c5aa993b | 2817 | { |
23860348 | 2818 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2819 | if (',' == display_buf[n-1]) |
2820 | display_buf[n-1] = ' '; | |
2821 | return display_buf; | |
c5aa993b | 2822 | } |
0f71a2f6 | 2823 | } |
9d1f7ab2 | 2824 | return NULL; |
0f71a2f6 | 2825 | } |
c906108c | 2826 | \f |
c5aa993b | 2827 | |
0fb4aa4b PA |
2828 | static int |
2829 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2830 | struct static_tracepoint_marker *marker) | |
2831 | { | |
2832 | struct remote_state *rs = get_remote_state (); | |
2833 | char *p = rs->buf; | |
2834 | ||
2835 | sprintf (p, "qTSTMat:"); | |
2836 | p += strlen (p); | |
2837 | p += hexnumstr (p, addr); | |
2838 | putpkt (rs->buf); | |
2839 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2840 | p = rs->buf; | |
2841 | ||
2842 | if (*p == 'E') | |
2843 | error (_("Remote failure reply: %s"), p); | |
2844 | ||
2845 | if (*p++ == 'm') | |
2846 | { | |
2847 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2848 | return 1; | |
2849 | } | |
2850 | ||
2851 | return 0; | |
2852 | } | |
2853 | ||
2854 | static void | |
2855 | free_current_marker (void *arg) | |
2856 | { | |
2857 | struct static_tracepoint_marker **marker_p = arg; | |
2858 | ||
2859 | if (*marker_p != NULL) | |
2860 | { | |
2861 | release_static_tracepoint_marker (*marker_p); | |
2862 | xfree (*marker_p); | |
2863 | } | |
2864 | else | |
2865 | *marker_p = NULL; | |
2866 | } | |
2867 | ||
2868 | static VEC(static_tracepoint_marker_p) * | |
2869 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2870 | { | |
2871 | struct remote_state *rs = get_remote_state (); | |
2872 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2873 | struct static_tracepoint_marker *marker = NULL; | |
2874 | struct cleanup *old_chain; | |
2875 | char *p; | |
2876 | ||
2877 | /* Ask for a first packet of static tracepoint marker | |
2878 | definition. */ | |
2879 | putpkt ("qTfSTM"); | |
2880 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2881 | p = rs->buf; | |
2882 | if (*p == 'E') | |
2883 | error (_("Remote failure reply: %s"), p); | |
2884 | ||
2885 | old_chain = make_cleanup (free_current_marker, &marker); | |
2886 | ||
2887 | while (*p++ == 'm') | |
2888 | { | |
2889 | if (marker == NULL) | |
2890 | marker = XCNEW (struct static_tracepoint_marker); | |
2891 | ||
2892 | do | |
2893 | { | |
2894 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2895 | ||
2896 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2897 | { | |
2898 | VEC_safe_push (static_tracepoint_marker_p, | |
2899 | markers, marker); | |
2900 | marker = NULL; | |
2901 | } | |
2902 | else | |
2903 | { | |
2904 | release_static_tracepoint_marker (marker); | |
2905 | memset (marker, 0, sizeof (*marker)); | |
2906 | } | |
2907 | } | |
2908 | while (*p++ == ','); /* comma-separated list */ | |
2909 | /* Ask for another packet of static tracepoint definition. */ | |
2910 | putpkt ("qTsSTM"); | |
2911 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2912 | p = rs->buf; | |
2913 | } | |
2914 | ||
2915 | do_cleanups (old_chain); | |
2916 | return markers; | |
2917 | } | |
2918 | ||
2919 | \f | |
10760264 JB |
2920 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2921 | ||
2922 | static ptid_t | |
2923 | remote_get_ada_task_ptid (long lwp, long thread) | |
2924 | { | |
2925 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2926 | } | |
2927 | \f | |
2928 | ||
24b06219 | 2929 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2930 | |
2931 | static void | |
fba45db2 | 2932 | extended_remote_restart (void) |
c906108c | 2933 | { |
d01949b6 | 2934 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2935 | |
2936 | /* Send the restart command; for reasons I don't understand the | |
2937 | remote side really expects a number after the "R". */ | |
ea9c271d | 2938 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2939 | putpkt (rs->buf); |
c906108c | 2940 | |
ad9a8f3f | 2941 | remote_fileio_reset (); |
c906108c SS |
2942 | } |
2943 | \f | |
2944 | /* Clean up connection to a remote debugger. */ | |
2945 | ||
c906108c | 2946 | static void |
fba45db2 | 2947 | remote_close (int quitting) |
c906108c | 2948 | { |
d3fd5342 PA |
2949 | if (remote_desc == NULL) |
2950 | return; /* already closed */ | |
2951 | ||
2952 | /* Make sure we leave stdin registered in the event loop, and we | |
2953 | don't leave the async SIGINT signal handler installed. */ | |
2954 | remote_terminal_ours (); | |
ce5ce7ed | 2955 | |
d3fd5342 PA |
2956 | serial_close (remote_desc); |
2957 | remote_desc = NULL; | |
ce5ce7ed PA |
2958 | |
2959 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2960 | of all the inferiors and their threads we were controlling. |
2961 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
2962 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 2963 | inferior_ptid = null_ptid; |
f67fd822 | 2964 | discard_all_inferiors (); |
ce5ce7ed | 2965 | |
74531fed PA |
2966 | /* We're no longer interested in any of these events. */ |
2967 | discard_pending_stop_replies (-1); | |
2968 | ||
2969 | if (remote_async_inferior_event_token) | |
2970 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2971 | if (remote_async_get_pending_events_token) | |
2972 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2973 | } |
2974 | ||
23860348 | 2975 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2976 | |
2977 | static void | |
fba45db2 | 2978 | get_offsets (void) |
c906108c | 2979 | { |
d01949b6 | 2980 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2981 | char *buf; |
085dd6e6 | 2982 | char *ptr; |
31d99776 DJ |
2983 | int lose, num_segments = 0, do_sections, do_segments; |
2984 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2985 | struct section_offsets *offs; |
31d99776 DJ |
2986 | struct symfile_segment_data *data; |
2987 | ||
2988 | if (symfile_objfile == NULL) | |
2989 | return; | |
c906108c SS |
2990 | |
2991 | putpkt ("qOffsets"); | |
6d820c5c | 2992 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2993 | buf = rs->buf; |
c906108c SS |
2994 | |
2995 | if (buf[0] == '\000') | |
2996 | return; /* Return silently. Stub doesn't support | |
23860348 | 2997 | this command. */ |
c906108c SS |
2998 | if (buf[0] == 'E') |
2999 | { | |
8a3fe4f8 | 3000 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3001 | return; |
3002 | } | |
3003 | ||
3004 | /* Pick up each field in turn. This used to be done with scanf, but | |
3005 | scanf will make trouble if CORE_ADDR size doesn't match | |
3006 | conversion directives correctly. The following code will work | |
3007 | with any size of CORE_ADDR. */ | |
3008 | text_addr = data_addr = bss_addr = 0; | |
3009 | ptr = buf; | |
3010 | lose = 0; | |
3011 | ||
3012 | if (strncmp (ptr, "Text=", 5) == 0) | |
3013 | { | |
3014 | ptr += 5; | |
3015 | /* Don't use strtol, could lose on big values. */ | |
3016 | while (*ptr && *ptr != ';') | |
3017 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3018 | |
31d99776 DJ |
3019 | if (strncmp (ptr, ";Data=", 6) == 0) |
3020 | { | |
3021 | ptr += 6; | |
3022 | while (*ptr && *ptr != ';') | |
3023 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3024 | } | |
3025 | else | |
3026 | lose = 1; | |
3027 | ||
3028 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3029 | { | |
3030 | ptr += 5; | |
3031 | while (*ptr && *ptr != ';') | |
3032 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3033 | |
31d99776 DJ |
3034 | if (bss_addr != data_addr) |
3035 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3036 | } | |
3037 | else | |
3038 | lose = 1; | |
3039 | } | |
3040 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3041 | { |
31d99776 DJ |
3042 | ptr += 8; |
3043 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3044 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3045 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3046 | num_segments = 1; | |
3047 | ||
3048 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3049 | { | |
3050 | ptr += 9; | |
3051 | while (*ptr && *ptr != ';') | |
3052 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3053 | num_segments++; | |
3054 | } | |
c906108c SS |
3055 | } |
3056 | else | |
3057 | lose = 1; | |
3058 | ||
3059 | if (lose) | |
8a3fe4f8 | 3060 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3061 | else if (*ptr != '\0') |
3062 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3063 | |
802188a7 | 3064 | offs = ((struct section_offsets *) |
a39a16c4 | 3065 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3066 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3067 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3068 | |
31d99776 DJ |
3069 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3070 | do_segments = (data != NULL); | |
3071 | do_sections = num_segments == 0; | |
c906108c | 3072 | |
28c32713 | 3073 | if (num_segments > 0) |
31d99776 | 3074 | { |
31d99776 DJ |
3075 | segments[0] = text_addr; |
3076 | segments[1] = data_addr; | |
3077 | } | |
28c32713 JB |
3078 | /* If we have two segments, we can still try to relocate everything |
3079 | by assuming that the .text and .data offsets apply to the whole | |
3080 | text and data segments. Convert the offsets given in the packet | |
3081 | to base addresses for symfile_map_offsets_to_segments. */ | |
3082 | else if (data && data->num_segments == 2) | |
3083 | { | |
3084 | segments[0] = data->segment_bases[0] + text_addr; | |
3085 | segments[1] = data->segment_bases[1] + data_addr; | |
3086 | num_segments = 2; | |
3087 | } | |
8d385431 DJ |
3088 | /* If the object file has only one segment, assume that it is text |
3089 | rather than data; main programs with no writable data are rare, | |
3090 | but programs with no code are useless. Of course the code might | |
3091 | have ended up in the data segment... to detect that we would need | |
3092 | the permissions here. */ | |
3093 | else if (data && data->num_segments == 1) | |
3094 | { | |
3095 | segments[0] = data->segment_bases[0] + text_addr; | |
3096 | num_segments = 1; | |
3097 | } | |
28c32713 JB |
3098 | /* There's no way to relocate by segment. */ |
3099 | else | |
3100 | do_segments = 0; | |
31d99776 DJ |
3101 | |
3102 | if (do_segments) | |
3103 | { | |
3104 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3105 | offs, num_segments, segments); | |
3106 | ||
3107 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3108 | error (_("Can not handle qOffsets TextSeg " |
3109 | "response with this symbol file")); | |
31d99776 DJ |
3110 | |
3111 | if (ret > 0) | |
3112 | do_sections = 0; | |
3113 | } | |
c906108c | 3114 | |
9ef895d6 DJ |
3115 | if (data) |
3116 | free_symfile_segment_data (data); | |
31d99776 DJ |
3117 | |
3118 | if (do_sections) | |
3119 | { | |
3120 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3121 | ||
3e43a32a MS |
3122 | /* This is a temporary kludge to force data and bss to use the |
3123 | same offsets because that's what nlmconv does now. The real | |
3124 | solution requires changes to the stub and remote.c that I | |
3125 | don't have time to do right now. */ | |
31d99776 DJ |
3126 | |
3127 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3128 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3129 | } | |
c906108c SS |
3130 | |
3131 | objfile_relocate (symfile_objfile, offs); | |
3132 | } | |
3133 | ||
74531fed PA |
3134 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3135 | threads we know are stopped already. This is used during the | |
3136 | initial remote connection in non-stop mode --- threads that are | |
3137 | reported as already being stopped are left stopped. */ | |
3138 | ||
3139 | static int | |
3140 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3141 | { | |
3142 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3143 | if (peek_stop_reply (thread->ptid)) | |
3144 | set_stop_requested (thread->ptid, 1); | |
3145 | ||
3146 | return 0; | |
3147 | } | |
3148 | ||
9a7071a8 JB |
3149 | /* Send interrupt_sequence to remote target. */ |
3150 | static void | |
eeae04df | 3151 | send_interrupt_sequence (void) |
9a7071a8 JB |
3152 | { |
3153 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3154 | serial_write (remote_desc, "\x03", 1); | |
3155 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3156 | serial_send_break (remote_desc); | |
3157 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3158 | { | |
3159 | serial_send_break (remote_desc); | |
3160 | serial_write (remote_desc, "g", 1); | |
3161 | } | |
3162 | else | |
3163 | internal_error (__FILE__, __LINE__, | |
3164 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3165 | interrupt_sequence_mode); | |
3166 | } | |
3167 | ||
49c62f2e PA |
3168 | /* Query the remote target for which is the current thread/process, |
3169 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3170 | responsible for setting the state such that the remote end is ready | |
3171 | to return the current thread. */ | |
3172 | ||
3173 | static void | |
3174 | add_current_inferior_and_thread (void) | |
3175 | { | |
3176 | struct remote_state *rs = get_remote_state (); | |
3177 | int fake_pid_p = 0; | |
3178 | ptid_t ptid; | |
3179 | ||
3180 | inferior_ptid = null_ptid; | |
3181 | ||
3182 | /* Now, if we have thread information, update inferior_ptid. */ | |
3183 | ptid = remote_current_thread (inferior_ptid); | |
3184 | if (!ptid_equal (ptid, null_ptid)) | |
3185 | { | |
3186 | if (!remote_multi_process_p (rs)) | |
3187 | fake_pid_p = 1; | |
3188 | ||
3189 | inferior_ptid = ptid; | |
3190 | } | |
3191 | else | |
3192 | { | |
3193 | /* Without this, some commands which require an active target | |
3194 | (such as kill) won't work. This variable serves (at least) | |
3195 | double duty as both the pid of the target process (if it has | |
3196 | such), and as a flag indicating that a target is active. */ | |
3197 | inferior_ptid = magic_null_ptid; | |
3198 | fake_pid_p = 1; | |
3199 | } | |
3200 | ||
3201 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3202 | ||
3203 | /* Add the main thread. */ | |
3204 | add_thread_silent (inferior_ptid); | |
3205 | } | |
3206 | ||
9cbc821d | 3207 | static void |
04bd08de | 3208 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3209 | { |
c8d104ad PA |
3210 | struct remote_state *rs = get_remote_state (); |
3211 | struct packet_config *noack_config; | |
2d717e4f | 3212 | char *wait_status = NULL; |
8621d6a9 | 3213 | |
23860348 | 3214 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3215 | |
9a7071a8 JB |
3216 | if (interrupt_on_connect) |
3217 | send_interrupt_sequence (); | |
3218 | ||
57e12211 TT |
3219 | /* Ack any packet which the remote side has already sent. */ |
3220 | serial_write (remote_desc, "+", 1); | |
3221 | ||
c8d104ad PA |
3222 | /* The first packet we send to the target is the optional "supported |
3223 | packets" request. If the target can answer this, it will tell us | |
3224 | which later probes to skip. */ | |
3225 | remote_query_supported (); | |
3226 | ||
d914c394 SS |
3227 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3228 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3229 | remote_set_permissions (); | |
3230 | ||
c8d104ad PA |
3231 | /* Next, we possibly activate noack mode. |
3232 | ||
3233 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3234 | enable noack mode if the stub reported a wish for it with | |
3235 | qSupported. | |
3236 | ||
3237 | If set to TRUE, then enable noack mode even if the stub didn't | |
3238 | report it in qSupported. If the stub doesn't reply OK, the | |
3239 | session ends with an error. | |
3240 | ||
3241 | If FALSE, then don't activate noack mode, regardless of what the | |
3242 | stub claimed should be the default with qSupported. */ | |
3243 | ||
3244 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3245 | ||
3246 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3247 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3248 | && noack_config->support == PACKET_ENABLE)) | |
3249 | { | |
3250 | putpkt ("QStartNoAckMode"); | |
3251 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3252 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3253 | rs->noack_mode = 1; | |
3254 | } | |
3255 | ||
04bd08de | 3256 | if (extended_p) |
5fe04517 PA |
3257 | { |
3258 | /* Tell the remote that we are using the extended protocol. */ | |
3259 | putpkt ("!"); | |
3260 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3261 | } | |
3262 | ||
d962ef82 DJ |
3263 | /* Next, if the target can specify a description, read it. We do |
3264 | this before anything involving memory or registers. */ | |
3265 | target_find_description (); | |
3266 | ||
6c95b8df PA |
3267 | /* Next, now that we know something about the target, update the |
3268 | address spaces in the program spaces. */ | |
3269 | update_address_spaces (); | |
3270 | ||
50c71eaf PA |
3271 | /* On OSs where the list of libraries is global to all |
3272 | processes, we fetch them early. */ | |
3273 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3274 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3275 | |
74531fed PA |
3276 | if (non_stop) |
3277 | { | |
3278 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3279 | error (_("Non-stop mode requested, but remote " |
3280 | "does not support non-stop")); | |
74531fed PA |
3281 | |
3282 | putpkt ("QNonStop:1"); | |
3283 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3284 | ||
3285 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3286 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3287 | |
3288 | /* Find about threads and processes the stub is already | |
3289 | controlling. We default to adding them in the running state. | |
3290 | The '?' query below will then tell us about which threads are | |
3291 | stopped. */ | |
04bd08de | 3292 | remote_threads_info (target); |
74531fed PA |
3293 | } |
3294 | else if (rs->non_stop_aware) | |
3295 | { | |
3296 | /* Don't assume that the stub can operate in all-stop mode. | |
3297 | Request it explicitely. */ | |
3298 | putpkt ("QNonStop:0"); | |
3299 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3300 | ||
3301 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3302 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3303 | } |
3304 | ||
2d717e4f DJ |
3305 | /* Check whether the target is running now. */ |
3306 | putpkt ("?"); | |
3307 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3308 | ||
74531fed | 3309 | if (!non_stop) |
2d717e4f | 3310 | { |
e714e1bf UW |
3311 | ptid_t ptid; |
3312 | int fake_pid_p = 0; | |
3313 | struct inferior *inf; | |
3314 | ||
74531fed | 3315 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3316 | { |
04bd08de | 3317 | if (!extended_p) |
74531fed | 3318 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3319 | |
3320 | /* We're connected, but not running. Drop out before we | |
3321 | call start_remote. */ | |
3322 | return; | |
2d717e4f DJ |
3323 | } |
3324 | else | |
74531fed | 3325 | { |
74531fed PA |
3326 | /* Save the reply for later. */ |
3327 | wait_status = alloca (strlen (rs->buf) + 1); | |
3328 | strcpy (wait_status, rs->buf); | |
3329 | } | |
3330 | ||
3331 | /* Let the stub know that we want it to return the thread. */ | |
3332 | set_continue_thread (minus_one_ptid); | |
3333 | ||
49c62f2e | 3334 | add_current_inferior_and_thread (); |
74531fed | 3335 | |
6e586cc5 YQ |
3336 | /* init_wait_for_inferior should be called before get_offsets in order |
3337 | to manage `inserted' flag in bp loc in a correct state. | |
3338 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3339 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3340 | start_remote, set `inserted' flag to 1. In the initialization of | |
3341 | inferior, breakpoint_init_inferior should be called first, and then | |
3342 | breakpoint_re_set can be called. If this order is broken, state of | |
3343 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3344 | manipulation. */ | |
3345 | init_wait_for_inferior (); | |
3346 | ||
74531fed PA |
3347 | get_offsets (); /* Get text, data & bss offsets. */ |
3348 | ||
d962ef82 DJ |
3349 | /* If we could not find a description using qXfer, and we know |
3350 | how to do it some other way, try again. This is not | |
3351 | supported for non-stop; it could be, but it is tricky if | |
3352 | there are no stopped threads when we connect. */ | |
04bd08de | 3353 | if (remote_read_description_p (target) |
d962ef82 DJ |
3354 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3355 | { | |
3356 | target_clear_description (); | |
3357 | target_find_description (); | |
3358 | } | |
3359 | ||
74531fed PA |
3360 | /* Use the previously fetched status. */ |
3361 | gdb_assert (wait_status != NULL); | |
3362 | strcpy (rs->buf, wait_status); | |
3363 | rs->cached_wait_status = 1; | |
3364 | ||
3365 | immediate_quit--; | |
04bd08de | 3366 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3367 | } |
3368 | else | |
3369 | { | |
68c97600 PA |
3370 | /* Clear WFI global state. Do this before finding about new |
3371 | threads and inferiors, and setting the current inferior. | |
3372 | Otherwise we would clear the proceed status of the current | |
3373 | inferior when we want its stop_soon state to be preserved | |
3374 | (see notice_new_inferior). */ | |
3375 | init_wait_for_inferior (); | |
3376 | ||
74531fed PA |
3377 | /* In non-stop, we will either get an "OK", meaning that there |
3378 | are no stopped threads at this time; or, a regular stop | |
3379 | reply. In the latter case, there may be more than one thread | |
3380 | stopped --- we pull them all out using the vStopped | |
3381 | mechanism. */ | |
3382 | if (strcmp (rs->buf, "OK") != 0) | |
3383 | { | |
3384 | struct stop_reply *stop_reply; | |
3385 | struct cleanup *old_chain; | |
2d717e4f | 3386 | |
74531fed PA |
3387 | stop_reply = stop_reply_xmalloc (); |
3388 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3389 | |
74531fed PA |
3390 | remote_parse_stop_reply (rs->buf, stop_reply); |
3391 | discard_cleanups (old_chain); | |
c0a2216e | 3392 | |
74531fed PA |
3393 | /* get_pending_stop_replies acks this one, and gets the rest |
3394 | out. */ | |
3395 | pending_stop_reply = stop_reply; | |
3396 | remote_get_pending_stop_replies (); | |
c906108c | 3397 | |
74531fed PA |
3398 | /* Make sure that threads that were stopped remain |
3399 | stopped. */ | |
3400 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3401 | } | |
2d717e4f | 3402 | |
74531fed PA |
3403 | if (target_can_async_p ()) |
3404 | target_async (inferior_event_handler, 0); | |
c906108c | 3405 | |
74531fed PA |
3406 | if (thread_count () == 0) |
3407 | { | |
04bd08de | 3408 | if (!extended_p) |
74531fed | 3409 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3410 | |
c35b1492 PA |
3411 | /* We're connected, but not running. Drop out before we |
3412 | call start_remote. */ | |
3413 | return; | |
3414 | } | |
74531fed PA |
3415 | |
3416 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3417 | |
74531fed PA |
3418 | /* Force the stub to choose a thread. */ |
3419 | set_general_thread (null_ptid); | |
c906108c | 3420 | |
74531fed PA |
3421 | /* Query it. */ |
3422 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3423 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3424 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3425 | |
74531fed PA |
3426 | get_offsets (); /* Get text, data & bss offsets. */ |
3427 | ||
3428 | /* In non-stop mode, any cached wait status will be stored in | |
3429 | the stop reply queue. */ | |
3430 | gdb_assert (wait_status == NULL); | |
f0223081 | 3431 | |
2455069d UW |
3432 | /* Report all signals during attach/startup. */ |
3433 | remote_pass_signals (0, NULL); | |
74531fed | 3434 | } |
c8d104ad | 3435 | |
c8d104ad PA |
3436 | /* If we connected to a live target, do some additional setup. */ |
3437 | if (target_has_execution) | |
3438 | { | |
3439 | if (exec_bfd) /* No use without an exec file. */ | |
3440 | remote_check_symbols (symfile_objfile); | |
3441 | } | |
50c71eaf | 3442 | |
d5551862 SS |
3443 | /* Possibly the target has been engaged in a trace run started |
3444 | previously; find out where things are at. */ | |
26afc0d7 | 3445 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3446 | { |
00bf0b85 SS |
3447 | struct uploaded_tp *uploaded_tps = NULL; |
3448 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3449 | ||
00bf0b85 SS |
3450 | if (current_trace_status ()->running) |
3451 | printf_filtered (_("Trace is already running on the target.\n")); | |
3452 | ||
3453 | /* Get trace state variables first, they may be checked when | |
3454 | parsing uploaded commands. */ | |
3455 | ||
3456 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3457 | ||
3458 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3459 | ||
3460 | remote_upload_tracepoints (&uploaded_tps); | |
3461 | ||
3462 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3463 | } |
3464 | ||
2567c7d9 PA |
3465 | /* If breakpoints are global, insert them now. */ |
3466 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3467 | && breakpoints_always_inserted_mode ()) |
3468 | insert_breakpoints (); | |
c906108c SS |
3469 | } |
3470 | ||
3471 | /* Open a connection to a remote debugger. | |
3472 | NAME is the filename used for communication. */ | |
3473 | ||
3474 | static void | |
fba45db2 | 3475 | remote_open (char *name, int from_tty) |
c906108c | 3476 | { |
75c99385 | 3477 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3478 | } |
3479 | ||
c906108c SS |
3480 | /* Open a connection to a remote debugger using the extended |
3481 | remote gdb protocol. NAME is the filename used for communication. */ | |
3482 | ||
3483 | static void | |
fba45db2 | 3484 | extended_remote_open (char *name, int from_tty) |
c906108c | 3485 | { |
75c99385 | 3486 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3487 | } |
3488 | ||
c906108c SS |
3489 | /* Generic code for opening a connection to a remote target. */ |
3490 | ||
d471ea57 AC |
3491 | static void |
3492 | init_all_packet_configs (void) | |
3493 | { | |
3494 | int i; | |
a744cf53 | 3495 | |
444abaca DJ |
3496 | for (i = 0; i < PACKET_MAX; i++) |
3497 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3498 | } |
3499 | ||
23860348 | 3500 | /* Symbol look-up. */ |
dc8acb97 MS |
3501 | |
3502 | static void | |
3503 | remote_check_symbols (struct objfile *objfile) | |
3504 | { | |
d01949b6 | 3505 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3506 | char *msg, *reply, *tmp; |
3507 | struct minimal_symbol *sym; | |
3508 | int end; | |
3509 | ||
63154eca PA |
3510 | /* The remote side has no concept of inferiors that aren't running |
3511 | yet, it only knows about running processes. If we're connected | |
3512 | but our current inferior is not running, we should not invite the | |
3513 | remote target to request symbol lookups related to its | |
3514 | (unrelated) current process. */ | |
3515 | if (!target_has_execution) | |
3516 | return; | |
3517 | ||
444abaca | 3518 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3519 | return; |
3520 | ||
63154eca PA |
3521 | /* Make sure the remote is pointing at the right process. Note |
3522 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3523 | set_general_process (); |
3524 | ||
6d820c5c DJ |
3525 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3526 | because we need both at the same time. */ | |
ea9c271d | 3527 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3528 | |
23860348 | 3529 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3530 | |
3531 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3532 | getpkt (&rs->buf, &rs->buf_size, 0); |
3533 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3534 | reply = rs->buf; |
dc8acb97 MS |
3535 | |
3536 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3537 | { | |
3538 | tmp = &reply[8]; | |
cfd77fa1 | 3539 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3540 | msg[end] = '\0'; |
3541 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3542 | if (sym == NULL) | |
ea9c271d | 3543 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3544 | else |
2bbe3cc1 | 3545 | { |
5af949e3 | 3546 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3547 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3548 | ||
3549 | /* If this is a function address, return the start of code | |
3550 | instead of any data function descriptor. */ | |
1cf3db46 | 3551 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3552 | sym_addr, |
3553 | ¤t_target); | |
3554 | ||
3555 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3556 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3557 | } |
3558 | ||
dc8acb97 | 3559 | putpkt (msg); |
6d820c5c | 3560 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3561 | reply = rs->buf; |
dc8acb97 MS |
3562 | } |
3563 | } | |
3564 | ||
9db8d71f DJ |
3565 | static struct serial * |
3566 | remote_serial_open (char *name) | |
3567 | { | |
3568 | static int udp_warning = 0; | |
3569 | ||
3570 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3571 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3572 | serial connection is reliable and not the serial connection promising | |
3573 | to be. */ | |
3574 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3575 | { | |
3e43a32a MS |
3576 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3577 | "Some events may be lost, rendering further debugging " | |
3578 | "impossible.")); | |
9db8d71f DJ |
3579 | udp_warning = 1; |
3580 | } | |
3581 | ||
3582 | return serial_open (name); | |
3583 | } | |
3584 | ||
d914c394 SS |
3585 | /* Inform the target of our permission settings. The permission flags |
3586 | work without this, but if the target knows the settings, it can do | |
3587 | a couple things. First, it can add its own check, to catch cases | |
3588 | that somehow manage to get by the permissions checks in target | |
3589 | methods. Second, if the target is wired to disallow particular | |
3590 | settings (for instance, a system in the field that is not set up to | |
3591 | be able to stop at a breakpoint), it can object to any unavailable | |
3592 | permissions. */ | |
3593 | ||
3594 | void | |
3595 | remote_set_permissions (void) | |
3596 | { | |
3597 | struct remote_state *rs = get_remote_state (); | |
3598 | ||
3599 | sprintf (rs->buf, "QAllow:" | |
3600 | "WriteReg:%x;WriteMem:%x;" | |
3601 | "InsertBreak:%x;InsertTrace:%x;" | |
3602 | "InsertFastTrace:%x;Stop:%x", | |
3603 | may_write_registers, may_write_memory, | |
3604 | may_insert_breakpoints, may_insert_tracepoints, | |
3605 | may_insert_fast_tracepoints, may_stop); | |
3606 | putpkt (rs->buf); | |
3607 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3608 | ||
3609 | /* If the target didn't like the packet, warn the user. Do not try | |
3610 | to undo the user's settings, that would just be maddening. */ | |
3611 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3612 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3613 | } |
3614 | ||
be2a5f71 DJ |
3615 | /* This type describes each known response to the qSupported |
3616 | packet. */ | |
3617 | struct protocol_feature | |
3618 | { | |
3619 | /* The name of this protocol feature. */ | |
3620 | const char *name; | |
3621 | ||
3622 | /* The default for this protocol feature. */ | |
3623 | enum packet_support default_support; | |
3624 | ||
3625 | /* The function to call when this feature is reported, or after | |
3626 | qSupported processing if the feature is not supported. | |
3627 | The first argument points to this structure. The second | |
3628 | argument indicates whether the packet requested support be | |
3629 | enabled, disabled, or probed (or the default, if this function | |
3630 | is being called at the end of processing and this feature was | |
3631 | not reported). The third argument may be NULL; if not NULL, it | |
3632 | is a NUL-terminated string taken from the packet following | |
3633 | this feature's name and an equals sign. */ | |
3634 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3635 | const char *); | |
3636 | ||
3637 | /* The corresponding packet for this feature. Only used if | |
3638 | FUNC is remote_supported_packet. */ | |
3639 | int packet; | |
3640 | }; | |
3641 | ||
be2a5f71 DJ |
3642 | static void |
3643 | remote_supported_packet (const struct protocol_feature *feature, | |
3644 | enum packet_support support, | |
3645 | const char *argument) | |
3646 | { | |
3647 | if (argument) | |
3648 | { | |
3649 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3650 | " \"%s\"."), feature->name); | |
3651 | return; | |
3652 | } | |
3653 | ||
3654 | if (remote_protocol_packets[feature->packet].support | |
3655 | == PACKET_SUPPORT_UNKNOWN) | |
3656 | remote_protocol_packets[feature->packet].support = support; | |
3657 | } | |
be2a5f71 DJ |
3658 | |
3659 | static void | |
3660 | remote_packet_size (const struct protocol_feature *feature, | |
3661 | enum packet_support support, const char *value) | |
3662 | { | |
3663 | struct remote_state *rs = get_remote_state (); | |
3664 | ||
3665 | int packet_size; | |
3666 | char *value_end; | |
3667 | ||
3668 | if (support != PACKET_ENABLE) | |
3669 | return; | |
3670 | ||
3671 | if (value == NULL || *value == '\0') | |
3672 | { | |
3673 | warning (_("Remote target reported \"%s\" without a size."), | |
3674 | feature->name); | |
3675 | return; | |
3676 | } | |
3677 | ||
3678 | errno = 0; | |
3679 | packet_size = strtol (value, &value_end, 16); | |
3680 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3681 | { | |
3682 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3683 | feature->name, value); | |
3684 | return; | |
3685 | } | |
3686 | ||
3687 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3688 | { | |
3689 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3690 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3691 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3692 | } | |
3693 | ||
3694 | /* Record the new maximum packet size. */ | |
3695 | rs->explicit_packet_size = packet_size; | |
3696 | } | |
3697 | ||
82f73884 PA |
3698 | static void |
3699 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3700 | enum packet_support support, const char *value) | |
3701 | { | |
3702 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3703 | |
82f73884 PA |
3704 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3705 | } | |
3706 | ||
74531fed PA |
3707 | static void |
3708 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3709 | enum packet_support support, const char *value) | |
3710 | { | |
3711 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3712 | |
74531fed PA |
3713 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3714 | } | |
3715 | ||
782b2b07 SS |
3716 | static void |
3717 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3718 | enum packet_support support, | |
3719 | const char *value) | |
3720 | { | |
3721 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3722 | |
782b2b07 SS |
3723 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3724 | } | |
3725 | ||
3788aec7 LM |
3726 | static void |
3727 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3728 | enum packet_support support, | |
3729 | const char *value) | |
3730 | { | |
3731 | struct remote_state *rs = get_remote_state (); | |
3732 | ||
3733 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3734 | } | |
3735 | ||
7a697b8d SS |
3736 | static void |
3737 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3738 | enum packet_support support, | |
3739 | const char *value) | |
3740 | { | |
3741 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3742 | |
7a697b8d SS |
3743 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3744 | } | |
3745 | ||
0fb4aa4b PA |
3746 | static void |
3747 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3748 | enum packet_support support, | |
3749 | const char *value) | |
3750 | { | |
3751 | struct remote_state *rs = get_remote_state (); | |
3752 | ||
3753 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3754 | } | |
3755 | ||
1e4d1764 YQ |
3756 | static void |
3757 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3758 | enum packet_support support, | |
3759 | const char *value) | |
3760 | { | |
3761 | struct remote_state *rs = get_remote_state (); | |
3762 | ||
3763 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3764 | } | |
3765 | ||
d5551862 SS |
3766 | static void |
3767 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3768 | enum packet_support support, | |
3769 | const char *value) | |
3770 | { | |
3771 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3772 | |
d5551862 SS |
3773 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3774 | } | |
3775 | ||
d248b706 KY |
3776 | static void |
3777 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3778 | enum packet_support support, | |
3779 | const char *value) | |
3780 | { | |
3781 | struct remote_state *rs = get_remote_state (); | |
3782 | ||
3783 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3784 | } | |
3785 | ||
3065dfb6 SS |
3786 | static void |
3787 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3788 | enum packet_support support, | |
3789 | const char *value) | |
3790 | { | |
3791 | struct remote_state *rs = get_remote_state (); | |
3792 | ||
3793 | rs->string_tracing = (support == PACKET_ENABLE); | |
3794 | } | |
3795 | ||
be2a5f71 | 3796 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3797 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3798 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3799 | PACKET_qXfer_auxv }, |
23181151 DJ |
3800 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3801 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3802 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3803 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3804 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3805 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3806 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3807 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3808 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3809 | PACKET_qXfer_spu_read }, | |
3810 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3811 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3812 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3813 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3814 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3815 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3816 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3817 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3818 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3819 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3820 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3821 | PACKET_QStartNoAckMode }, | |
82f73884 | 3822 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3823 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3824 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3825 | PACKET_qXfer_siginfo_read }, | |
3826 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3827 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3828 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3829 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
3830 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
3831 | PACKET_ConditionalBreakpoints }, | |
7a697b8d SS |
3832 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3833 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3834 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3835 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3836 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3837 | PACKET_InstallInTrace}, | |
d5551862 SS |
3838 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3839 | -1 }, | |
40ab02ce MS |
3840 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3841 | PACKET_bc }, | |
3842 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3843 | PACKET_bs }, | |
409873ef SS |
3844 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3845 | PACKET_TracepointSource }, | |
d914c394 SS |
3846 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3847 | PACKET_QAllow }, | |
d248b706 KY |
3848 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3849 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3850 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3851 | PACKET_qXfer_fdpic }, | |
03583c20 UW |
3852 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3853 | PACKET_QDisableRandomization }, | |
3065dfb6 SS |
3854 | { "tracenz", PACKET_DISABLE, |
3855 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3856 | }; |
3857 | ||
c8d5aac9 L |
3858 | static char *remote_support_xml; |
3859 | ||
3860 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3861 | ||
3862 | void | |
6e39997a | 3863 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3864 | { |
3865 | #if defined(HAVE_LIBEXPAT) | |
3866 | if (remote_support_xml == NULL) | |
c4f7c687 | 3867 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3868 | else |
3869 | { | |
3870 | char *copy = xstrdup (remote_support_xml + 13); | |
3871 | char *p = strtok (copy, ","); | |
3872 | ||
3873 | do | |
3874 | { | |
3875 | if (strcmp (p, xml) == 0) | |
3876 | { | |
3877 | /* already there */ | |
3878 | xfree (copy); | |
3879 | return; | |
3880 | } | |
3881 | } | |
3882 | while ((p = strtok (NULL, ",")) != NULL); | |
3883 | xfree (copy); | |
3884 | ||
94b0dee1 PA |
3885 | remote_support_xml = reconcat (remote_support_xml, |
3886 | remote_support_xml, ",", xml, | |
3887 | (char *) NULL); | |
c8d5aac9 L |
3888 | } |
3889 | #endif | |
3890 | } | |
3891 | ||
3892 | static char * | |
3893 | remote_query_supported_append (char *msg, const char *append) | |
3894 | { | |
3895 | if (msg) | |
94b0dee1 | 3896 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3897 | else |
3898 | return xstrdup (append); | |
3899 | } | |
3900 | ||
be2a5f71 DJ |
3901 | static void |
3902 | remote_query_supported (void) | |
3903 | { | |
3904 | struct remote_state *rs = get_remote_state (); | |
3905 | char *next; | |
3906 | int i; | |
3907 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3908 | ||
3909 | /* The packet support flags are handled differently for this packet | |
3910 | than for most others. We treat an error, a disabled packet, and | |
3911 | an empty response identically: any features which must be reported | |
3912 | to be used will be automatically disabled. An empty buffer | |
3913 | accomplishes this, since that is also the representation for a list | |
3914 | containing no features. */ | |
3915 | ||
3916 | rs->buf[0] = 0; | |
3917 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3918 | { | |
c8d5aac9 | 3919 | char *q = NULL; |
94b0dee1 | 3920 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 3921 | |
901f9912 | 3922 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
3923 | |
3924 | if (remote_support_xml) | |
3925 | q = remote_query_supported_append (q, remote_support_xml); | |
3926 | ||
dde08ee1 PA |
3927 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3928 | ||
3929 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3930 | putpkt (q); | |
82f73884 | 3931 | |
94b0dee1 PA |
3932 | do_cleanups (old_chain); |
3933 | ||
be2a5f71 DJ |
3934 | getpkt (&rs->buf, &rs->buf_size, 0); |
3935 | ||
3936 | /* If an error occured, warn, but do not return - just reset the | |
3937 | buffer to empty and go on to disable features. */ | |
3938 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3939 | == PACKET_ERROR) | |
3940 | { | |
3941 | warning (_("Remote failure reply: %s"), rs->buf); | |
3942 | rs->buf[0] = 0; | |
3943 | } | |
3944 | } | |
3945 | ||
3946 | memset (seen, 0, sizeof (seen)); | |
3947 | ||
3948 | next = rs->buf; | |
3949 | while (*next) | |
3950 | { | |
3951 | enum packet_support is_supported; | |
3952 | char *p, *end, *name_end, *value; | |
3953 | ||
3954 | /* First separate out this item from the rest of the packet. If | |
3955 | there's another item after this, we overwrite the separator | |
3956 | (terminated strings are much easier to work with). */ | |
3957 | p = next; | |
3958 | end = strchr (p, ';'); | |
3959 | if (end == NULL) | |
3960 | { | |
3961 | end = p + strlen (p); | |
3962 | next = end; | |
3963 | } | |
3964 | else | |
3965 | { | |
89be2091 DJ |
3966 | *end = '\0'; |
3967 | next = end + 1; | |
3968 | ||
be2a5f71 DJ |
3969 | if (end == p) |
3970 | { | |
3971 | warning (_("empty item in \"qSupported\" response")); | |
3972 | continue; | |
3973 | } | |
be2a5f71 DJ |
3974 | } |
3975 | ||
3976 | name_end = strchr (p, '='); | |
3977 | if (name_end) | |
3978 | { | |
3979 | /* This is a name=value entry. */ | |
3980 | is_supported = PACKET_ENABLE; | |
3981 | value = name_end + 1; | |
3982 | *name_end = '\0'; | |
3983 | } | |
3984 | else | |
3985 | { | |
3986 | value = NULL; | |
3987 | switch (end[-1]) | |
3988 | { | |
3989 | case '+': | |
3990 | is_supported = PACKET_ENABLE; | |
3991 | break; | |
3992 | ||
3993 | case '-': | |
3994 | is_supported = PACKET_DISABLE; | |
3995 | break; | |
3996 | ||
3997 | case '?': | |
3998 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3999 | break; | |
4000 | ||
4001 | default: | |
3e43a32a MS |
4002 | warning (_("unrecognized item \"%s\" " |
4003 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4004 | continue; |
4005 | } | |
4006 | end[-1] = '\0'; | |
4007 | } | |
4008 | ||
4009 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4010 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4011 | { | |
4012 | const struct protocol_feature *feature; | |
4013 | ||
4014 | seen[i] = 1; | |
4015 | feature = &remote_protocol_features[i]; | |
4016 | feature->func (feature, is_supported, value); | |
4017 | break; | |
4018 | } | |
4019 | } | |
4020 | ||
4021 | /* If we increased the packet size, make sure to increase the global | |
4022 | buffer size also. We delay this until after parsing the entire | |
4023 | qSupported packet, because this is the same buffer we were | |
4024 | parsing. */ | |
4025 | if (rs->buf_size < rs->explicit_packet_size) | |
4026 | { | |
4027 | rs->buf_size = rs->explicit_packet_size; | |
4028 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4029 | } | |
4030 | ||
4031 | /* Handle the defaults for unmentioned features. */ | |
4032 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4033 | if (!seen[i]) | |
4034 | { | |
4035 | const struct protocol_feature *feature; | |
4036 | ||
4037 | feature = &remote_protocol_features[i]; | |
4038 | feature->func (feature, feature->default_support, NULL); | |
4039 | } | |
4040 | } | |
4041 | ||
4042 | ||
c906108c | 4043 | static void |
3e43a32a MS |
4044 | remote_open_1 (char *name, int from_tty, |
4045 | struct target_ops *target, int extended_p) | |
c906108c | 4046 | { |
d01949b6 | 4047 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4048 | |
c906108c | 4049 | if (name == 0) |
8a3fe4f8 | 4050 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4051 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4052 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4053 | |
23860348 | 4054 | /* See FIXME above. */ |
c6ebd6cf | 4055 | if (!target_async_permitted) |
92d1e331 | 4056 | wait_forever_enabled_p = 1; |
6426a772 | 4057 | |
2d717e4f DJ |
4058 | /* If we're connected to a running target, target_preopen will kill it. |
4059 | But if we're connected to a target system with no running process, | |
4060 | then we will still be connected when it returns. Ask this question | |
4061 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4062 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4063 | { |
4064 | if (!from_tty | |
4065 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4066 | pop_target (); | |
4067 | else | |
4068 | error (_("Still connected.")); | |
4069 | } | |
4070 | ||
c906108c SS |
4071 | target_preopen (from_tty); |
4072 | ||
4073 | unpush_target (target); | |
4074 | ||
2d717e4f DJ |
4075 | /* This time without a query. If we were connected to an |
4076 | extended-remote target and target_preopen killed the running | |
4077 | process, we may still be connected. If we are starting "target | |
4078 | remote" now, the extended-remote target will not have been | |
4079 | removed by unpush_target. */ | |
c35b1492 | 4080 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4081 | pop_target (); |
4082 | ||
89be2091 DJ |
4083 | /* Make sure we send the passed signals list the next time we resume. */ |
4084 | xfree (last_pass_packet); | |
4085 | last_pass_packet = NULL; | |
4086 | ||
ad9a8f3f | 4087 | remote_fileio_reset (); |
1dd41f16 NS |
4088 | reopen_exec_file (); |
4089 | reread_symbols (); | |
4090 | ||
9db8d71f | 4091 | remote_desc = remote_serial_open (name); |
c906108c SS |
4092 | if (!remote_desc) |
4093 | perror_with_name (name); | |
4094 | ||
4095 | if (baud_rate != -1) | |
4096 | { | |
2cd58942 | 4097 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4098 | { |
9b74d5d3 KB |
4099 | /* The requested speed could not be set. Error out to |
4100 | top level after closing remote_desc. Take care to | |
4101 | set remote_desc to NULL to avoid closing remote_desc | |
4102 | more than once. */ | |
2cd58942 | 4103 | serial_close (remote_desc); |
9b74d5d3 | 4104 | remote_desc = NULL; |
c906108c SS |
4105 | perror_with_name (name); |
4106 | } | |
4107 | } | |
4108 | ||
2cd58942 | 4109 | serial_raw (remote_desc); |
c906108c SS |
4110 | |
4111 | /* If there is something sitting in the buffer we might take it as a | |
4112 | response to a command, which would be bad. */ | |
2cd58942 | 4113 | serial_flush_input (remote_desc); |
c906108c SS |
4114 | |
4115 | if (from_tty) | |
4116 | { | |
4117 | puts_filtered ("Remote debugging using "); | |
4118 | puts_filtered (name); | |
4119 | puts_filtered ("\n"); | |
4120 | } | |
23860348 | 4121 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4122 | |
74531fed PA |
4123 | /* Register extra event sources in the event loop. */ |
4124 | remote_async_inferior_event_token | |
4125 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4126 | NULL); | |
4127 | remote_async_get_pending_events_token | |
4128 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4129 | NULL); | |
4130 | ||
be2a5f71 DJ |
4131 | /* Reset the target state; these things will be queried either by |
4132 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4133 | init_all_packet_configs (); |
74531fed | 4134 | rs->cached_wait_status = 0; |
be2a5f71 | 4135 | rs->explicit_packet_size = 0; |
a6f3e723 | 4136 | rs->noack_mode = 0; |
82f73884 PA |
4137 | rs->multi_process_aware = 0; |
4138 | rs->extended = extended_p; | |
74531fed | 4139 | rs->non_stop_aware = 0; |
e24a49d8 | 4140 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4141 | rs->ctrlc_pending_p = 0; |
802188a7 | 4142 | |
79d7f229 PA |
4143 | general_thread = not_sent_ptid; |
4144 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4145 | remote_traceframe_number = -1; |
c906108c | 4146 | |
9d1f7ab2 MS |
4147 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4148 | use_threadinfo_query = 1; | |
4149 | use_threadextra_query = 1; | |
4150 | ||
c6ebd6cf | 4151 | if (target_async_permitted) |
92d1e331 | 4152 | { |
23860348 | 4153 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4154 | remote_async_terminal_ours_p = 1; |
4155 | ||
4156 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4157 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4158 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4159 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4160 | around this. Eventually a mechanism that allows |
92d1e331 | 4161 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4162 | implemented. */ |
92d1e331 DJ |
4163 | wait_forever_enabled_p = 0; |
4164 | } | |
4165 | ||
23860348 | 4166 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4167 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4168 | |
74531fed PA |
4169 | /* Start afresh. */ |
4170 | init_thread_list (); | |
4171 | ||
36918e70 | 4172 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4173 | target (we'd otherwise be in an inconsistent state) and then |
4174 | propogate the error on up the exception chain. This ensures that | |
4175 | the caller doesn't stumble along blindly assuming that the | |
4176 | function succeeded. The CLI doesn't have this problem but other | |
4177 | UI's, such as MI do. | |
36918e70 AC |
4178 | |
4179 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4180 | this function should return an error indication letting the | |
ce2826aa | 4181 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4182 | ``target remote'' is directly wired to this function making that |
4183 | impossible. On a positive note, the CLI side of this problem has | |
4184 | been fixed - the function set_cmd_context() makes it possible for | |
4185 | all the ``target ....'' commands to share a common callback | |
4186 | function. See cli-dump.c. */ | |
109c3e39 | 4187 | { |
04bd08de | 4188 | volatile struct gdb_exception ex; |
2d717e4f | 4189 | |
04bd08de TT |
4190 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4191 | { | |
4192 | remote_start_remote (from_tty, target, extended_p); | |
4193 | } | |
109c3e39 AC |
4194 | if (ex.reason < 0) |
4195 | { | |
c8d104ad PA |
4196 | /* Pop the partially set up target - unless something else did |
4197 | already before throwing the exception. */ | |
4198 | if (remote_desc != NULL) | |
4199 | pop_target (); | |
c6ebd6cf | 4200 | if (target_async_permitted) |
109c3e39 AC |
4201 | wait_forever_enabled_p = 1; |
4202 | throw_exception (ex); | |
4203 | } | |
4204 | } | |
c906108c | 4205 | |
c6ebd6cf | 4206 | if (target_async_permitted) |
92d1e331 | 4207 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4208 | } |
4209 | ||
c906108c SS |
4210 | /* This takes a program previously attached to and detaches it. After |
4211 | this is done, GDB can be used to debug some other program. We | |
4212 | better not have left any breakpoints in the target program or it'll | |
4213 | die when it hits one. */ | |
4214 | ||
4215 | static void | |
2d717e4f | 4216 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4217 | { |
82f73884 | 4218 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4219 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4220 | |
4221 | if (args) | |
8a3fe4f8 | 4222 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4223 | |
2d717e4f DJ |
4224 | if (!target_has_execution) |
4225 | error (_("No process to detach from.")); | |
4226 | ||
7cee1e54 PA |
4227 | if (from_tty) |
4228 | { | |
4229 | char *exec_file = get_exec_file (0); | |
4230 | if (exec_file == NULL) | |
4231 | exec_file = ""; | |
4232 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4233 | target_pid_to_str (pid_to_ptid (pid))); | |
4234 | gdb_flush (gdb_stdout); | |
4235 | } | |
4236 | ||
c906108c | 4237 | /* Tell the remote target to detach. */ |
82f73884 PA |
4238 | if (remote_multi_process_p (rs)) |
4239 | sprintf (rs->buf, "D;%x", pid); | |
4240 | else | |
4241 | strcpy (rs->buf, "D"); | |
4242 | ||
4ddda9b5 PA |
4243 | putpkt (rs->buf); |
4244 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4245 | ||
82f73884 PA |
4246 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4247 | ; | |
4248 | else if (rs->buf[0] == '\0') | |
4249 | error (_("Remote doesn't know how to detach")); | |
4250 | else | |
4ddda9b5 | 4251 | error (_("Can't detach process.")); |
c906108c | 4252 | |
7cee1e54 PA |
4253 | if (from_tty && !extended) |
4254 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4255 | |
74531fed | 4256 | discard_pending_stop_replies (pid); |
82f73884 | 4257 | target_mourn_inferior (); |
2d717e4f DJ |
4258 | } |
4259 | ||
4260 | static void | |
136d6dae | 4261 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4262 | { |
4263 | remote_detach_1 (args, from_tty, 0); | |
4264 | } | |
4265 | ||
4266 | static void | |
136d6dae | 4267 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4268 | { |
4269 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4270 | } |
4271 | ||
6ad8ae5c DJ |
4272 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4273 | ||
43ff13b4 | 4274 | static void |
597320e7 | 4275 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4276 | { |
43ff13b4 | 4277 | if (args) |
2d717e4f | 4278 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4279 | |
2d717e4f DJ |
4280 | /* Make sure we unpush even the extended remote targets; mourn |
4281 | won't do it. So call remote_mourn_1 directly instead of | |
4282 | target_mourn_inferior. */ | |
4283 | remote_mourn_1 (target); | |
4284 | ||
43ff13b4 JM |
4285 | if (from_tty) |
4286 | puts_filtered ("Ending remote debugging.\n"); | |
4287 | } | |
4288 | ||
2d717e4f DJ |
4289 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4290 | be chatty about it. */ | |
4291 | ||
4292 | static void | |
4293 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4294 | { | |
4295 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4296 | int pid; |
96ef3384 | 4297 | char *wait_status = NULL; |
2d717e4f | 4298 | |
74164c56 | 4299 | pid = parse_pid_to_attach (args); |
2d717e4f | 4300 | |
74164c56 JK |
4301 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4302 | way as in other targets. */ | |
2d717e4f DJ |
4303 | |
4304 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4305 | error (_("This target does not support attaching to a process")); | |
4306 | ||
7cee1e54 PA |
4307 | if (from_tty) |
4308 | { | |
4309 | char *exec_file = get_exec_file (0); | |
4310 | ||
4311 | if (exec_file) | |
4312 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4313 | target_pid_to_str (pid_to_ptid (pid))); | |
4314 | else | |
4315 | printf_unfiltered (_("Attaching to %s\n"), | |
4316 | target_pid_to_str (pid_to_ptid (pid))); | |
4317 | ||
4318 | gdb_flush (gdb_stdout); | |
4319 | } | |
4320 | ||
2d717e4f DJ |
4321 | sprintf (rs->buf, "vAttach;%x", pid); |
4322 | putpkt (rs->buf); | |
4323 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4324 | ||
3e43a32a MS |
4325 | if (packet_ok (rs->buf, |
4326 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4327 | { |
74531fed PA |
4328 | if (!non_stop) |
4329 | { | |
4330 | /* Save the reply for later. */ | |
4331 | wait_status = alloca (strlen (rs->buf) + 1); | |
4332 | strcpy (wait_status, rs->buf); | |
4333 | } | |
4334 | else if (strcmp (rs->buf, "OK") != 0) | |
4335 | error (_("Attaching to %s failed with: %s"), | |
4336 | target_pid_to_str (pid_to_ptid (pid)), | |
4337 | rs->buf); | |
2d717e4f DJ |
4338 | } |
4339 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4340 | error (_("This target does not support attaching to a process")); | |
4341 | else | |
4342 | error (_("Attaching to %s failed"), | |
4343 | target_pid_to_str (pid_to_ptid (pid))); | |
4344 | ||
49c62f2e | 4345 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4346 | |
2d717e4f | 4347 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4348 | |
bad34192 PA |
4349 | if (non_stop) |
4350 | { | |
4351 | struct thread_info *thread; | |
79d7f229 | 4352 | |
bad34192 PA |
4353 | /* Get list of threads. */ |
4354 | remote_threads_info (target); | |
82f73884 | 4355 | |
bad34192 PA |
4356 | thread = first_thread_of_process (pid); |
4357 | if (thread) | |
4358 | inferior_ptid = thread->ptid; | |
4359 | else | |
4360 | inferior_ptid = pid_to_ptid (pid); | |
4361 | ||
4362 | /* Invalidate our notion of the remote current thread. */ | |
4363 | record_currthread (minus_one_ptid); | |
4364 | } | |
74531fed | 4365 | else |
bad34192 PA |
4366 | { |
4367 | /* Now, if we have thread information, update inferior_ptid. */ | |
4368 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4369 | ||
4370 | /* Add the main thread to the thread list. */ | |
4371 | add_thread_silent (inferior_ptid); | |
4372 | } | |
c0a2216e | 4373 | |
96ef3384 UW |
4374 | /* Next, if the target can specify a description, read it. We do |
4375 | this before anything involving memory or registers. */ | |
4376 | target_find_description (); | |
4377 | ||
74531fed PA |
4378 | if (!non_stop) |
4379 | { | |
4380 | /* Use the previously fetched status. */ | |
4381 | gdb_assert (wait_status != NULL); | |
4382 | ||
4383 | if (target_can_async_p ()) | |
4384 | { | |
4385 | struct stop_reply *stop_reply; | |
4386 | struct cleanup *old_chain; | |
4387 | ||
4388 | stop_reply = stop_reply_xmalloc (); | |
4389 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4390 | remote_parse_stop_reply (wait_status, stop_reply); | |
4391 | discard_cleanups (old_chain); | |
4392 | push_stop_reply (stop_reply); | |
4393 | ||
4394 | target_async (inferior_event_handler, 0); | |
4395 | } | |
4396 | else | |
4397 | { | |
4398 | gdb_assert (wait_status != NULL); | |
4399 | strcpy (rs->buf, wait_status); | |
4400 | rs->cached_wait_status = 1; | |
4401 | } | |
4402 | } | |
4403 | else | |
4404 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4405 | } |
4406 | ||
4407 | static void | |
136d6dae | 4408 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4409 | { |
136d6dae | 4410 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4411 | } |
4412 | ||
c906108c SS |
4413 | /* Convert hex digit A to a number. */ |
4414 | ||
30559e10 | 4415 | static int |
fba45db2 | 4416 | fromhex (int a) |
c906108c SS |
4417 | { |
4418 | if (a >= '0' && a <= '9') | |
4419 | return a - '0'; | |
4420 | else if (a >= 'a' && a <= 'f') | |
4421 | return a - 'a' + 10; | |
4422 | else if (a >= 'A' && a <= 'F') | |
4423 | return a - 'A' + 10; | |
c5aa993b | 4424 | else |
8a3fe4f8 | 4425 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4426 | } |
4427 | ||
00bf0b85 | 4428 | int |
cfd77fa1 | 4429 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4430 | { |
4431 | int i; | |
4432 | ||
30559e10 MS |
4433 | for (i = 0; i < count; i++) |
4434 | { | |
4435 | if (hex[0] == 0 || hex[1] == 0) | |
4436 | { | |
4437 | /* Hex string is short, or of uneven length. | |
23860348 | 4438 | Return the count that has been converted so far. */ |
30559e10 MS |
4439 | return i; |
4440 | } | |
4441 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4442 | hex += 2; | |
4443 | } | |
4444 | return i; | |
4445 | } | |
4446 | ||
c906108c SS |
4447 | /* Convert number NIB to a hex digit. */ |
4448 | ||
4449 | static int | |
fba45db2 | 4450 | tohex (int nib) |
c906108c SS |
4451 | { |
4452 | if (nib < 10) | |
c5aa993b | 4453 | return '0' + nib; |
c906108c | 4454 | else |
c5aa993b | 4455 | return 'a' + nib - 10; |
c906108c | 4456 | } |
30559e10 | 4457 | |
00bf0b85 | 4458 | int |
cfd77fa1 | 4459 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4460 | { |
4461 | int i; | |
a744cf53 | 4462 | |
23860348 | 4463 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4464 | if (count == 0) |
cfd77fa1 | 4465 | count = strlen ((char *) bin); |
30559e10 MS |
4466 | |
4467 | for (i = 0; i < count; i++) | |
4468 | { | |
4469 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4470 | *hex++ = tohex (*bin++ & 0xf); | |
4471 | } | |
4472 | *hex = 0; | |
4473 | return i; | |
4474 | } | |
c906108c | 4475 | \f |
506fb367 DJ |
4476 | /* Check for the availability of vCont. This function should also check |
4477 | the response. */ | |
c906108c SS |
4478 | |
4479 | static void | |
6d820c5c | 4480 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4481 | { |
2e9f7625 | 4482 | char *buf; |
6d820c5c | 4483 | |
2e9f7625 DJ |
4484 | strcpy (rs->buf, "vCont?"); |
4485 | putpkt (rs->buf); | |
6d820c5c | 4486 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4487 | buf = rs->buf; |
c906108c | 4488 | |
506fb367 DJ |
4489 | /* Make sure that the features we assume are supported. */ |
4490 | if (strncmp (buf, "vCont", 5) == 0) | |
4491 | { | |
4492 | char *p = &buf[5]; | |
4493 | int support_s, support_S, support_c, support_C; | |
4494 | ||
4495 | support_s = 0; | |
4496 | support_S = 0; | |
4497 | support_c = 0; | |
4498 | support_C = 0; | |
74531fed | 4499 | rs->support_vCont_t = 0; |
506fb367 DJ |
4500 | while (p && *p == ';') |
4501 | { | |
4502 | p++; | |
4503 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4504 | support_s = 1; | |
4505 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4506 | support_S = 1; | |
4507 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4508 | support_c = 1; | |
4509 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4510 | support_C = 1; | |
74531fed PA |
4511 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4512 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4513 | |
4514 | p = strchr (p, ';'); | |
4515 | } | |
c906108c | 4516 | |
506fb367 DJ |
4517 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4518 | BUF will make packet_ok disable the packet. */ | |
4519 | if (!support_s || !support_S || !support_c || !support_C) | |
4520 | buf[0] = 0; | |
4521 | } | |
c906108c | 4522 | |
444abaca | 4523 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4524 | } |
c906108c | 4525 | |
0d8f58ca PA |
4526 | /* Helper function for building "vCont" resumptions. Write a |
4527 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4528 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4529 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4530 | resumed thread should be single-stepped and/or signalled. If PTID | |
4531 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4532 | represents a process, then all threads of the process are resumed; | |
4533 | the thread to be stepped and/or signalled is given in the global | |
4534 | INFERIOR_PTID. */ | |
4535 | ||
4536 | static char * | |
4537 | append_resumption (char *p, char *endp, | |
4538 | ptid_t ptid, int step, enum target_signal siggnal) | |
4539 | { | |
4540 | struct remote_state *rs = get_remote_state (); | |
4541 | ||
4542 | if (step && siggnal != TARGET_SIGNAL_0) | |
4543 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4544 | else if (step) | |
4545 | p += xsnprintf (p, endp - p, ";s"); | |
4546 | else if (siggnal != TARGET_SIGNAL_0) | |
4547 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4548 | else | |
4549 | p += xsnprintf (p, endp - p, ";c"); | |
4550 | ||
4551 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4552 | { | |
4553 | ptid_t nptid; | |
4554 | ||
4555 | /* All (-1) threads of process. */ | |
4556 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4557 | ||
4558 | p += xsnprintf (p, endp - p, ":"); | |
4559 | p = write_ptid (p, endp, nptid); | |
4560 | } | |
4561 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4562 | { | |
4563 | p += xsnprintf (p, endp - p, ":"); | |
4564 | p = write_ptid (p, endp, ptid); | |
4565 | } | |
4566 | ||
4567 | return p; | |
4568 | } | |
4569 | ||
506fb367 DJ |
4570 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4571 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4572 | resumed thread should be single-stepped and/or signalled. If PTID |
4573 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4574 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4575 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4576 | |
506fb367 DJ |
4577 | This function issues a strict subset of all possible vCont commands at the |
4578 | moment. */ | |
44eaed12 | 4579 | |
506fb367 DJ |
4580 | static int |
4581 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4582 | { | |
4583 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4584 | char *p; |
4585 | char *endp; | |
44eaed12 | 4586 | |
444abaca | 4587 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4588 | remote_vcont_probe (rs); |
44eaed12 | 4589 | |
444abaca | 4590 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4591 | return 0; |
44eaed12 | 4592 | |
82f73884 PA |
4593 | p = rs->buf; |
4594 | endp = rs->buf + get_remote_packet_size (); | |
4595 | ||
506fb367 DJ |
4596 | /* If we could generate a wider range of packets, we'd have to worry |
4597 | about overflowing BUF. Should there be a generic | |
4598 | "multi-part-packet" packet? */ | |
4599 | ||
0d8f58ca PA |
4600 | p += xsnprintf (p, endp - p, "vCont"); |
4601 | ||
79d7f229 | 4602 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4603 | { |
79d7f229 PA |
4604 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4605 | so we don't have any TID numbers the inferior will | |
4606 | understand. Make sure to only send forms that do not specify | |
4607 | a TID. */ | |
a9cbf802 | 4608 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4609 | } |
0d8f58ca | 4610 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4611 | { |
0d8f58ca PA |
4612 | /* Resume all threads (of all processes, or of a single |
4613 | process), with preference for INFERIOR_PTID. This assumes | |
4614 | inferior_ptid belongs to the set of all threads we are about | |
4615 | to resume. */ | |
4616 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4617 | { |
0d8f58ca PA |
4618 | /* Step inferior_ptid, with or without signal. */ |
4619 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4620 | } |
0d8f58ca PA |
4621 | |
4622 | /* And continue others without a signal. */ | |
a9cbf802 | 4623 | append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); |
c906108c SS |
4624 | } |
4625 | else | |
506fb367 DJ |
4626 | { |
4627 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4628 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4629 | } |
c906108c | 4630 | |
82f73884 PA |
4631 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4632 | putpkt (rs->buf); | |
506fb367 | 4633 | |
74531fed PA |
4634 | if (non_stop) |
4635 | { | |
4636 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4637 | reply will be reported asynchronously by means of a `%Stop' | |
4638 | notification. */ | |
4639 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4640 | if (strcmp (rs->buf, "OK") != 0) | |
4641 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4642 | } | |
4643 | ||
506fb367 | 4644 | return 1; |
c906108c | 4645 | } |
43ff13b4 | 4646 | |
506fb367 DJ |
4647 | /* Tell the remote machine to resume. */ |
4648 | ||
4649 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4650 | ||
4651 | static int last_sent_step; | |
4652 | ||
43ff13b4 | 4653 | static void |
28439f5e PA |
4654 | remote_resume (struct target_ops *ops, |
4655 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4656 | { |
d01949b6 | 4657 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4658 | char *buf; |
43ff13b4 | 4659 | |
43ff13b4 JM |
4660 | last_sent_signal = siggnal; |
4661 | last_sent_step = step; | |
4662 | ||
506fb367 | 4663 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4664 | /* No reverse support (yet) for vCont. */ |
4665 | if (execution_direction != EXEC_REVERSE) | |
4666 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4667 | goto done; | |
506fb367 | 4668 | |
79d7f229 PA |
4669 | /* All other supported resume packets do use Hc, so set the continue |
4670 | thread. */ | |
4671 | if (ptid_equal (ptid, minus_one_ptid)) | |
4672 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4673 | else |
79d7f229 | 4674 | set_continue_thread (ptid); |
506fb367 | 4675 | |
2e9f7625 | 4676 | buf = rs->buf; |
b2175913 MS |
4677 | if (execution_direction == EXEC_REVERSE) |
4678 | { | |
4679 | /* We don't pass signals to the target in reverse exec mode. */ | |
4680 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
7ea6d463 | 4681 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4682 | siggnal); |
40ab02ce MS |
4683 | |
4684 | if (step | |
4685 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4686 | error (_("Remote reverse-step not supported.")); | |
4687 | if (!step | |
4688 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4689 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4690 | |
b2175913 MS |
4691 | strcpy (buf, step ? "bs" : "bc"); |
4692 | } | |
4693 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4694 | { |
4695 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4696 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4697 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4698 | buf[3] = '\0'; |
4699 | } | |
4700 | else | |
c5aa993b | 4701 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4702 | |
44eaed12 | 4703 | putpkt (buf); |
43ff13b4 | 4704 | |
75c99385 | 4705 | done: |
2acceee2 | 4706 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4707 | with the event loop. NOTE: this is the one place where all the |
4708 | execution commands end up. We could alternatively do this in each | |
23860348 | 4709 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4710 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4711 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4712 | NOT asynchronously. */ |
362646f5 | 4713 | if (target_can_async_p ()) |
2acceee2 | 4714 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4715 | |
4716 | /* We've just told the target to resume. The remote server will | |
4717 | wait for the inferior to stop, and then send a stop reply. In | |
4718 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4719 | because the stub wouldn't be ready to process it. This applies |
4720 | only to the base all-stop protocol, however. In non-stop (which | |
4721 | only supports vCont), the stub replies with an "OK", and is | |
4722 | immediate able to process further serial input. */ | |
4723 | if (!non_stop) | |
4724 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4725 | } |
c906108c | 4726 | \f |
43ff13b4 JM |
4727 | |
4728 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4729 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4730 | static void |
fba45db2 | 4731 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4732 | { |
43ff13b4 JM |
4733 | signal (SIGINT, handle_remote_sigint); |
4734 | } | |
4735 | ||
23860348 | 4736 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4737 | static void |
fba45db2 | 4738 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4739 | { |
4740 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4741 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4742 | } | |
4743 | ||
4744 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4745 | sent once. It will take effect the second time that the user sends | |
23860348 | 4746 | a ^C. */ |
43ff13b4 | 4747 | static void |
fba45db2 | 4748 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4749 | { |
b803fb0f | 4750 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4751 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4752 | } | |
4753 | ||
6426a772 | 4754 | /* Perform the real interruption of the target execution, in response |
23860348 | 4755 | to a ^C. */ |
c5aa993b | 4756 | static void |
fba45db2 | 4757 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4758 | { |
4759 | if (remote_debug) | |
4760 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4761 | ||
94cc34af | 4762 | target_stop (inferior_ptid); |
43ff13b4 JM |
4763 | } |
4764 | ||
0df8b418 | 4765 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4766 | up on the target alltogether. */ |
2df3850c | 4767 | void |
fba45db2 | 4768 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4769 | { |
2df3850c JM |
4770 | if (remote_debug) |
4771 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4772 | |
4773 | interrupt_query (); | |
43ff13b4 JM |
4774 | } |
4775 | ||
4776 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4777 | stopped. */ |
6426a772 JM |
4778 | static void |
4779 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4780 | { |
4781 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4782 | } |
4783 | ||
c906108c SS |
4784 | /* Send ^C to target to halt it. Target will respond, and send us a |
4785 | packet. */ | |
507f3c78 | 4786 | static void (*ofunc) (int); |
c906108c | 4787 | |
0df8b418 MS |
4788 | /* The command line interface's stop routine. This function is installed |
4789 | as a signal handler for SIGINT. The first time a user requests a | |
4790 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4791 | response from the target (it didn't stop when the user requested it), |
23860348 | 4792 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4793 | static void |
fba45db2 | 4794 | remote_interrupt (int signo) |
c906108c | 4795 | { |
23860348 | 4796 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4797 | signal (signo, remote_interrupt_twice); |
4798 | ||
b803fb0f | 4799 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4800 | } |
4801 | ||
4802 | /* The user typed ^C twice. */ | |
4803 | ||
4804 | static void | |
fba45db2 | 4805 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4806 | { |
4807 | signal (signo, ofunc); | |
b803fb0f | 4808 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4809 | signal (signo, remote_interrupt); |
4810 | } | |
7a292a7a | 4811 | |
74531fed PA |
4812 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4813 | thread, all threads of a remote process, or all threads of all | |
4814 | processes. */ | |
4815 | ||
4816 | static void | |
4817 | remote_stop_ns (ptid_t ptid) | |
4818 | { | |
4819 | struct remote_state *rs = get_remote_state (); | |
4820 | char *p = rs->buf; | |
4821 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4822 | |
4823 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4824 | remote_vcont_probe (rs); | |
4825 | ||
4826 | if (!rs->support_vCont_t) | |
4827 | error (_("Remote server does not support stopping threads")); | |
4828 | ||
f91d3df5 PA |
4829 | if (ptid_equal (ptid, minus_one_ptid) |
4830 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4831 | p += xsnprintf (p, endp - p, "vCont;t"); |
4832 | else | |
4833 | { | |
4834 | ptid_t nptid; | |
4835 | ||
74531fed PA |
4836 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4837 | ||
4838 | if (ptid_is_pid (ptid)) | |
4839 | /* All (-1) threads of process. */ | |
4840 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4841 | else | |
4842 | { | |
4843 | /* Small optimization: if we already have a stop reply for | |
4844 | this thread, no use in telling the stub we want this | |
4845 | stopped. */ | |
4846 | if (peek_stop_reply (ptid)) | |
4847 | return; | |
4848 | ||
4849 | nptid = ptid; | |
4850 | } | |
4851 | ||
a9cbf802 | 4852 | write_ptid (p, endp, nptid); |
74531fed PA |
4853 | } |
4854 | ||
4855 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4856 | come in asynchronously by notification. */ | |
4857 | putpkt (rs->buf); | |
4858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4859 | if (strcmp (rs->buf, "OK") != 0) | |
4860 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4861 | } | |
4862 | ||
4863 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4864 | remote target. It is undefined which thread of which process | |
4865 | reports the stop. */ | |
4866 | ||
4867 | static void | |
4868 | remote_stop_as (ptid_t ptid) | |
4869 | { | |
4870 | struct remote_state *rs = get_remote_state (); | |
4871 | ||
3a29589a DJ |
4872 | rs->ctrlc_pending_p = 1; |
4873 | ||
74531fed PA |
4874 | /* If the inferior is stopped already, but the core didn't know |
4875 | about it yet, just ignore the request. The cached wait status | |
4876 | will be collected in remote_wait. */ | |
4877 | if (rs->cached_wait_status) | |
4878 | return; | |
4879 | ||
9a7071a8 JB |
4880 | /* Send interrupt_sequence to remote target. */ |
4881 | send_interrupt_sequence (); | |
74531fed PA |
4882 | } |
4883 | ||
0df8b418 | 4884 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4885 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4886 | will eventually end up here. */ |
74531fed | 4887 | |
c906108c | 4888 | static void |
94cc34af | 4889 | remote_stop (ptid_t ptid) |
c906108c | 4890 | { |
7a292a7a | 4891 | if (remote_debug) |
0f71a2f6 | 4892 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4893 | |
74531fed PA |
4894 | if (non_stop) |
4895 | remote_stop_ns (ptid); | |
c906108c | 4896 | else |
74531fed | 4897 | remote_stop_as (ptid); |
c906108c SS |
4898 | } |
4899 | ||
4900 | /* Ask the user what to do when an interrupt is received. */ | |
4901 | ||
4902 | static void | |
fba45db2 | 4903 | interrupt_query (void) |
c906108c SS |
4904 | { |
4905 | target_terminal_ours (); | |
4906 | ||
74531fed | 4907 | if (target_can_async_p ()) |
c906108c | 4908 | { |
74531fed | 4909 | signal (SIGINT, handle_sigint); |
315a522e | 4910 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4911 | } |
74531fed PA |
4912 | else |
4913 | { | |
9e2f0ad4 HZ |
4914 | if (query (_("Interrupted while waiting for the program.\n\ |
4915 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4916 | { |
4917 | pop_target (); | |
4918 | deprecated_throw_reason (RETURN_QUIT); | |
4919 | } | |
4920 | } | |
c906108c SS |
4921 | |
4922 | target_terminal_inferior (); | |
4923 | } | |
4924 | ||
6426a772 JM |
4925 | /* Enable/disable target terminal ownership. Most targets can use |
4926 | terminal groups to control terminal ownership. Remote targets are | |
4927 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4928 | is required. */ |
6426a772 JM |
4929 | |
4930 | static void | |
75c99385 | 4931 | remote_terminal_inferior (void) |
6426a772 | 4932 | { |
c6ebd6cf | 4933 | if (!target_async_permitted) |
75c99385 PA |
4934 | /* Nothing to do. */ |
4935 | return; | |
4936 | ||
d9d2d8b6 PA |
4937 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4938 | idempotent. The event-loop GDB talking to an asynchronous target | |
4939 | with a synchronous command calls this function from both | |
4940 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4941 | transfer the terminal to the target when it shouldn't this guard | |
4942 | can go away. */ | |
6426a772 JM |
4943 | if (!remote_async_terminal_ours_p) |
4944 | return; | |
4945 | delete_file_handler (input_fd); | |
4946 | remote_async_terminal_ours_p = 0; | |
4947 | initialize_sigint_signal_handler (); | |
4948 | /* NOTE: At this point we could also register our selves as the | |
4949 | recipient of all input. Any characters typed could then be | |
23860348 | 4950 | passed on down to the target. */ |
6426a772 JM |
4951 | } |
4952 | ||
4953 | static void | |
75c99385 | 4954 | remote_terminal_ours (void) |
6426a772 | 4955 | { |
c6ebd6cf | 4956 | if (!target_async_permitted) |
75c99385 PA |
4957 | /* Nothing to do. */ |
4958 | return; | |
4959 | ||
4960 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4961 | if (remote_async_terminal_ours_p) |
4962 | return; | |
4963 | cleanup_sigint_signal_handler (NULL); | |
4964 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4965 | remote_async_terminal_ours_p = 1; | |
4966 | } | |
4967 | ||
176a6961 | 4968 | static void |
917317f4 | 4969 | remote_console_output (char *msg) |
c906108c SS |
4970 | { |
4971 | char *p; | |
4972 | ||
c5aa993b | 4973 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4974 | { |
4975 | char tb[2]; | |
4976 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4977 | |
c906108c SS |
4978 | tb[0] = c; |
4979 | tb[1] = 0; | |
43ff13b4 | 4980 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4981 | } |
00db5b94 PA |
4982 | gdb_flush (gdb_stdtarg); |
4983 | } | |
74531fed PA |
4984 | |
4985 | typedef struct cached_reg | |
4986 | { | |
4987 | int num; | |
4988 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4989 | } cached_reg_t; | |
4990 | ||
4991 | DEF_VEC_O(cached_reg_t); | |
4992 | ||
4993 | struct stop_reply | |
4994 | { | |
4995 | struct stop_reply *next; | |
4996 | ||
4997 | ptid_t ptid; | |
4998 | ||
4999 | struct target_waitstatus ws; | |
5000 | ||
15148d6a PA |
5001 | /* Expedited registers. This makes remote debugging a bit more |
5002 | efficient for those targets that provide critical registers as | |
5003 | part of their normal status mechanism (as another roundtrip to | |
5004 | fetch them is avoided). */ | |
74531fed PA |
5005 | VEC(cached_reg_t) *regcache; |
5006 | ||
5007 | int stopped_by_watchpoint_p; | |
5008 | CORE_ADDR watch_data_address; | |
5009 | ||
5010 | int solibs_changed; | |
5011 | int replay_event; | |
dc146f7c VP |
5012 | |
5013 | int core; | |
74531fed PA |
5014 | }; |
5015 | ||
5016 | /* The list of already fetched and acknowledged stop events. */ | |
5017 | static struct stop_reply *stop_reply_queue; | |
5018 | ||
5019 | static struct stop_reply * | |
5020 | stop_reply_xmalloc (void) | |
5021 | { | |
5022 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 5023 | |
74531fed PA |
5024 | r->next = NULL; |
5025 | return r; | |
5026 | } | |
5027 | ||
5028 | static void | |
5029 | stop_reply_xfree (struct stop_reply *r) | |
5030 | { | |
5031 | if (r != NULL) | |
5032 | { | |
5033 | VEC_free (cached_reg_t, r->regcache); | |
5034 | xfree (r); | |
5035 | } | |
c906108c SS |
5036 | } |
5037 | ||
74531fed PA |
5038 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
5039 | discard everything. */ | |
c906108c | 5040 | |
74531fed PA |
5041 | static void |
5042 | discard_pending_stop_replies (int pid) | |
c906108c | 5043 | { |
74531fed | 5044 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 5045 | |
74531fed PA |
5046 | /* Discard the in-flight notification. */ |
5047 | if (pending_stop_reply != NULL | |
5048 | && (pid == -1 | |
5049 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
5050 | { | |
5051 | stop_reply_xfree (pending_stop_reply); | |
5052 | pending_stop_reply = NULL; | |
5053 | } | |
c906108c | 5054 | |
74531fed PA |
5055 | /* Discard the stop replies we have already pulled with |
5056 | vStopped. */ | |
5057 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 5058 | { |
74531fed PA |
5059 | next = reply->next; |
5060 | if (pid == -1 | |
5061 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 5062 | { |
74531fed PA |
5063 | if (reply == stop_reply_queue) |
5064 | stop_reply_queue = reply->next; | |
5065 | else | |
5066 | prev->next = reply->next; | |
5067 | ||
5068 | stop_reply_xfree (reply); | |
9fa2223d | 5069 | } |
74531fed PA |
5070 | else |
5071 | prev = reply; | |
c8e38a49 | 5072 | } |
74531fed | 5073 | } |
43ff13b4 | 5074 | |
74531fed | 5075 | /* Cleanup wrapper. */ |
2e9f7625 | 5076 | |
74531fed PA |
5077 | static void |
5078 | do_stop_reply_xfree (void *arg) | |
5079 | { | |
5080 | struct stop_reply *r = arg; | |
a744cf53 | 5081 | |
74531fed PA |
5082 | stop_reply_xfree (r); |
5083 | } | |
75c99385 | 5084 | |
74531fed PA |
5085 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5086 | remove it from the queue, and return it. Returns NULL if none is | |
5087 | found. If there are still queued events left to process, tell the | |
5088 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5089 | |
74531fed PA |
5090 | static struct stop_reply * |
5091 | queued_stop_reply (ptid_t ptid) | |
5092 | { | |
0723dbf5 PA |
5093 | struct stop_reply *it; |
5094 | struct stop_reply **it_link; | |
74531fed | 5095 | |
0723dbf5 PA |
5096 | it = stop_reply_queue; |
5097 | it_link = &stop_reply_queue; | |
5098 | while (it) | |
c8e38a49 | 5099 | { |
0723dbf5 PA |
5100 | if (ptid_match (it->ptid, ptid)) |
5101 | { | |
5102 | *it_link = it->next; | |
5103 | it->next = NULL; | |
5104 | break; | |
5105 | } | |
e24a49d8 | 5106 | |
0723dbf5 PA |
5107 | it_link = &it->next; |
5108 | it = *it_link; | |
5109 | } | |
74531fed PA |
5110 | |
5111 | if (stop_reply_queue) | |
5112 | /* There's still at least an event left. */ | |
5113 | mark_async_event_handler (remote_async_inferior_event_token); | |
5114 | ||
5115 | return it; | |
5116 | } | |
5117 | ||
5118 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5119 | know that we now have at least one queued event left to pass to the | |
5120 | core side, tell the event loop to get back to target_wait soon. */ | |
5121 | ||
5122 | static void | |
5123 | push_stop_reply (struct stop_reply *new_event) | |
5124 | { | |
5125 | struct stop_reply *event; | |
5126 | ||
5127 | if (stop_reply_queue) | |
5128 | { | |
5129 | for (event = stop_reply_queue; | |
5130 | event && event->next; | |
5131 | event = event->next) | |
5132 | ; | |
5133 | ||
5134 | event->next = new_event; | |
5135 | } | |
5136 | else | |
5137 | stop_reply_queue = new_event; | |
5138 | ||
5139 | mark_async_event_handler (remote_async_inferior_event_token); | |
5140 | } | |
5141 | ||
5142 | /* Returns true if we have a stop reply for PTID. */ | |
5143 | ||
5144 | static int | |
5145 | peek_stop_reply (ptid_t ptid) | |
5146 | { | |
5147 | struct stop_reply *it; | |
5148 | ||
5149 | for (it = stop_reply_queue; it; it = it->next) | |
5150 | if (ptid_equal (ptid, it->ptid)) | |
5151 | { | |
5152 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5153 | return 1; | |
5154 | } | |
5155 | ||
5156 | return 0; | |
5157 | } | |
5158 | ||
5159 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5160 | result is stored in EVENT, or throws an error. */ | |
5161 | ||
5162 | static void | |
5163 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5164 | { | |
5165 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5166 | ULONGEST addr; | |
5167 | char *p; | |
5168 | ||
5169 | event->ptid = null_ptid; | |
5170 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5171 | event->ws.value.integer = 0; | |
5172 | event->solibs_changed = 0; | |
5173 | event->replay_event = 0; | |
5174 | event->stopped_by_watchpoint_p = 0; | |
5175 | event->regcache = NULL; | |
dc146f7c | 5176 | event->core = -1; |
74531fed PA |
5177 | |
5178 | switch (buf[0]) | |
5179 | { | |
5180 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5181 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5182 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5183 | ss = signal number | |
5184 | n... = register number | |
5185 | r... = register contents | |
5186 | */ | |
5187 | ||
5188 | p = &buf[3]; /* after Txx */ | |
5189 | while (*p) | |
5190 | { | |
5191 | char *p1; | |
5192 | char *p_temp; | |
5193 | int fieldsize; | |
5194 | LONGEST pnum = 0; | |
43ff13b4 | 5195 | |
cea39f65 MS |
5196 | /* If the packet contains a register number, save it in |
5197 | pnum and set p1 to point to the character following it. | |
5198 | Otherwise p1 points to p. */ | |
3c3bea1c | 5199 | |
cea39f65 MS |
5200 | /* If this packet is an awatch packet, don't parse the 'a' |
5201 | as a register number. */ | |
c8e38a49 | 5202 | |
dc146f7c VP |
5203 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5204 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5205 | { |
5206 | /* Read the ``P'' register number. */ | |
5207 | pnum = strtol (p, &p_temp, 16); | |
5208 | p1 = p_temp; | |
5209 | } | |
5210 | else | |
5211 | p1 = p; | |
802188a7 | 5212 | |
cea39f65 MS |
5213 | if (p1 == p) /* No register number present here. */ |
5214 | { | |
5215 | p1 = strchr (p, ':'); | |
5216 | if (p1 == NULL) | |
5217 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5218 | Packet: '%s'\n"), |
cea39f65 MS |
5219 | p, buf); |
5220 | if (strncmp (p, "thread", p1 - p) == 0) | |
5221 | event->ptid = read_ptid (++p1, &p); | |
5222 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5223 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5224 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5225 | { | |
5226 | event->stopped_by_watchpoint_p = 1; | |
5227 | p = unpack_varlen_hex (++p1, &addr); | |
5228 | event->watch_data_address = (CORE_ADDR) addr; | |
5229 | } | |
5230 | else if (strncmp (p, "library", p1 - p) == 0) | |
5231 | { | |
5232 | p1++; | |
5233 | p_temp = p1; | |
5234 | while (*p_temp && *p_temp != ';') | |
5235 | p_temp++; | |
c8e38a49 | 5236 | |
cea39f65 MS |
5237 | event->solibs_changed = 1; |
5238 | p = p_temp; | |
5239 | } | |
5240 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5241 | { | |
5242 | /* NO_HISTORY event. | |
5243 | p1 will indicate "begin" or "end", but | |
5244 | it makes no difference for now, so ignore it. */ | |
5245 | event->replay_event = 1; | |
5246 | p_temp = strchr (p1 + 1, ';'); | |
5247 | if (p_temp) | |
c8e38a49 | 5248 | p = p_temp; |
cea39f65 | 5249 | } |
dc146f7c VP |
5250 | else if (strncmp (p, "core", p1 - p) == 0) |
5251 | { | |
5252 | ULONGEST c; | |
a744cf53 | 5253 | |
dc146f7c VP |
5254 | p = unpack_varlen_hex (++p1, &c); |
5255 | event->core = c; | |
5256 | } | |
cea39f65 MS |
5257 | else |
5258 | { | |
5259 | /* Silently skip unknown optional info. */ | |
5260 | p_temp = strchr (p1 + 1, ';'); | |
5261 | if (p_temp) | |
5262 | p = p_temp; | |
5263 | } | |
5264 | } | |
5265 | else | |
5266 | { | |
5267 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5268 | cached_reg_t cached_reg; | |
74531fed | 5269 | |
cea39f65 | 5270 | p = p1; |
75c99385 | 5271 | |
cea39f65 MS |
5272 | if (*p != ':') |
5273 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5274 | Packet: '%s'\n"), |
cea39f65 MS |
5275 | p, buf); |
5276 | ++p; | |
43ff13b4 | 5277 | |
cea39f65 MS |
5278 | if (reg == NULL) |
5279 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5280 | Packet: '%s'\n"), |
7c47795c | 5281 | hex_string (pnum), p, buf); |
c8e38a49 | 5282 | |
cea39f65 | 5283 | cached_reg.num = reg->regnum; |
4100683b | 5284 | |
cea39f65 MS |
5285 | fieldsize = hex2bin (p, cached_reg.data, |
5286 | register_size (target_gdbarch, | |
5287 | reg->regnum)); | |
5288 | p += 2 * fieldsize; | |
5289 | if (fieldsize < register_size (target_gdbarch, | |
5290 | reg->regnum)) | |
5291 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5292 | |
cea39f65 MS |
5293 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5294 | } | |
c8e38a49 | 5295 | |
cea39f65 MS |
5296 | if (*p != ';') |
5297 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5298 | buf, p); | |
5299 | ++p; | |
5300 | } | |
c8e38a49 PA |
5301 | /* fall through */ |
5302 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5303 | if (event->solibs_changed) |
5304 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5305 | else if (event->replay_event) | |
5306 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5307 | else |
5308 | { | |
74531fed PA |
5309 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5310 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5311 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5312 | } | |
5313 | break; | |
5314 | case 'W': /* Target exited. */ | |
5315 | case 'X': | |
5316 | { | |
5317 | char *p; | |
5318 | int pid; | |
5319 | ULONGEST value; | |
82f73884 | 5320 | |
c8e38a49 PA |
5321 | /* GDB used to accept only 2 hex chars here. Stubs should |
5322 | only send more if they detect GDB supports multi-process | |
5323 | support. */ | |
5324 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5325 | |
c8e38a49 PA |
5326 | if (buf[0] == 'W') |
5327 | { | |
5328 | /* The remote process exited. */ | |
74531fed PA |
5329 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5330 | event->ws.value.integer = value; | |
c8e38a49 PA |
5331 | } |
5332 | else | |
5333 | { | |
5334 | /* The remote process exited with a signal. */ | |
74531fed PA |
5335 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5336 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5337 | } |
82f73884 | 5338 | |
c8e38a49 PA |
5339 | /* If no process is specified, assume inferior_ptid. */ |
5340 | pid = ptid_get_pid (inferior_ptid); | |
5341 | if (*p == '\0') | |
5342 | ; | |
5343 | else if (*p == ';') | |
5344 | { | |
5345 | p++; | |
5346 | ||
5347 | if (p == '\0') | |
82f73884 | 5348 | ; |
c8e38a49 PA |
5349 | else if (strncmp (p, |
5350 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5351 | { |
c8e38a49 | 5352 | ULONGEST upid; |
a744cf53 | 5353 | |
c8e38a49 PA |
5354 | p += sizeof ("process:") - 1; |
5355 | unpack_varlen_hex (p, &upid); | |
5356 | pid = upid; | |
82f73884 PA |
5357 | } |
5358 | else | |
5359 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5360 | } |
c8e38a49 PA |
5361 | else |
5362 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5363 | event->ptid = pid_to_ptid (pid); |
5364 | } | |
5365 | break; | |
5366 | } | |
5367 | ||
5368 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5369 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5370 | } | |
5371 | ||
5372 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5373 | stop notification (%Stop). Those can come it at any time, hence, | |
5374 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5375 | making is finished, before querying the stub for more events with | |
5376 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5377 | upon receiving the %Stop notification, something like this could | |
5378 | happen: | |
5379 | ||
5380 | 1.1) --> Hg 1 | |
5381 | 1.2) <-- OK | |
5382 | 1.3) --> g | |
5383 | 1.4) <-- %Stop | |
5384 | 1.5) --> vStopped | |
5385 | 1.6) <-- (registers reply to step #1.3) | |
5386 | ||
5387 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5388 | query. | |
5389 | ||
5390 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5391 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5392 | doing whatever we were doing: | |
5393 | ||
5394 | 2.1) --> Hg 1 | |
5395 | 2.2) <-- OK | |
5396 | 2.3) --> g | |
5397 | 2.4) <-- %Stop | |
5398 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5399 | 2.5) <-- (registers reply to step #2.3) | |
5400 | ||
5401 | Eventualy after step #2.5, we return to the event loop, which | |
5402 | notices there's an event on the | |
5403 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5404 | associated callback --- the function below. At this point, we're | |
5405 | always safe to start a vStopped sequence. : | |
5406 | ||
5407 | 2.6) --> vStopped | |
5408 | 2.7) <-- T05 thread:2 | |
5409 | 2.8) --> vStopped | |
5410 | 2.9) --> OK | |
5411 | */ | |
5412 | ||
5413 | static void | |
5414 | remote_get_pending_stop_replies (void) | |
5415 | { | |
5416 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5417 | |
5418 | if (pending_stop_reply) | |
5419 | { | |
5420 | /* acknowledge */ | |
5421 | putpkt ("vStopped"); | |
5422 | ||
5423 | /* Now we can rely on it. */ | |
5424 | push_stop_reply (pending_stop_reply); | |
5425 | pending_stop_reply = NULL; | |
5426 | ||
5427 | while (1) | |
5428 | { | |
5429 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5430 | if (strcmp (rs->buf, "OK") == 0) | |
5431 | break; | |
5432 | else | |
5433 | { | |
5434 | struct cleanup *old_chain; | |
5435 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5436 | ||
5437 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5438 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5439 | ||
5440 | /* acknowledge */ | |
5441 | putpkt ("vStopped"); | |
5442 | ||
5443 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5444 | { | |
5445 | /* Now we can rely on it. */ | |
5446 | discard_cleanups (old_chain); | |
5447 | push_stop_reply (stop_reply); | |
5448 | } | |
5449 | else | |
5450 | /* We got an unknown stop reply. */ | |
5451 | do_cleanups (old_chain); | |
5452 | } | |
5453 | } | |
5454 | } | |
5455 | } | |
5456 | ||
5457 | ||
5458 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5459 | event that is to be returned to the core. This function always | |
5460 | destroys STOP_REPLY. */ | |
5461 | ||
5462 | static ptid_t | |
5463 | process_stop_reply (struct stop_reply *stop_reply, | |
5464 | struct target_waitstatus *status) | |
5465 | { | |
5466 | ptid_t ptid; | |
5467 | ||
5468 | *status = stop_reply->ws; | |
5469 | ptid = stop_reply->ptid; | |
5470 | ||
5471 | /* If no thread/process was reported by the stub, assume the current | |
5472 | inferior. */ | |
5473 | if (ptid_equal (ptid, null_ptid)) | |
5474 | ptid = inferior_ptid; | |
5475 | ||
5f3563ea PA |
5476 | if (status->kind != TARGET_WAITKIND_EXITED |
5477 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5478 | { |
5f3563ea PA |
5479 | /* Expedited registers. */ |
5480 | if (stop_reply->regcache) | |
5481 | { | |
217f1f79 UW |
5482 | struct regcache *regcache |
5483 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5484 | cached_reg_t *reg; |
5485 | int ix; | |
5486 | ||
5487 | for (ix = 0; | |
5488 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5489 | ix++) | |
217f1f79 | 5490 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5491 | VEC_free (cached_reg_t, stop_reply->regcache); |
5492 | } | |
74531fed | 5493 | |
5f3563ea PA |
5494 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5495 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5496 | |
5497 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5498 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5499 | } |
5500 | ||
74531fed PA |
5501 | stop_reply_xfree (stop_reply); |
5502 | return ptid; | |
5503 | } | |
5504 | ||
5505 | /* The non-stop mode version of target_wait. */ | |
5506 | ||
5507 | static ptid_t | |
47608cb1 | 5508 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5509 | { |
5510 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5511 | struct stop_reply *stop_reply; |
5512 | int ret; | |
5513 | ||
5514 | /* If in non-stop mode, get out of getpkt even if a | |
5515 | notification is received. */ | |
5516 | ||
5517 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5518 | 0 /* forever */); | |
5519 | while (1) | |
5520 | { | |
5521 | if (ret != -1) | |
5522 | switch (rs->buf[0]) | |
5523 | { | |
5524 | case 'E': /* Error of some sort. */ | |
5525 | /* We're out of sync with the target now. Did it continue | |
5526 | or not? We can't tell which thread it was in non-stop, | |
5527 | so just ignore this. */ | |
5528 | warning (_("Remote failure reply: %s"), rs->buf); | |
5529 | break; | |
5530 | case 'O': /* Console output. */ | |
5531 | remote_console_output (rs->buf + 1); | |
5532 | break; | |
5533 | default: | |
5534 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5535 | break; | |
5536 | } | |
5537 | ||
5538 | /* Acknowledge a pending stop reply that may have arrived in the | |
5539 | mean time. */ | |
5540 | if (pending_stop_reply != NULL) | |
5541 | remote_get_pending_stop_replies (); | |
5542 | ||
5543 | /* If indeed we noticed a stop reply, we're done. */ | |
5544 | stop_reply = queued_stop_reply (ptid); | |
5545 | if (stop_reply != NULL) | |
5546 | return process_stop_reply (stop_reply, status); | |
5547 | ||
47608cb1 | 5548 | /* Still no event. If we're just polling for an event, then |
74531fed | 5549 | return to the event loop. */ |
47608cb1 | 5550 | if (options & TARGET_WNOHANG) |
74531fed PA |
5551 | { |
5552 | status->kind = TARGET_WAITKIND_IGNORE; | |
5553 | return minus_one_ptid; | |
5554 | } | |
5555 | ||
47608cb1 | 5556 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5557 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5558 | 1 /* forever */); | |
5559 | } | |
5560 | } | |
5561 | ||
5562 | /* Wait until the remote machine stops, then return, storing status in | |
5563 | STATUS just as `wait' would. */ | |
5564 | ||
5565 | static ptid_t | |
47608cb1 | 5566 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5567 | { |
5568 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5569 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5570 | char *buf; |
74531fed PA |
5571 | struct stop_reply *stop_reply; |
5572 | ||
47608cb1 PA |
5573 | again: |
5574 | ||
74531fed PA |
5575 | status->kind = TARGET_WAITKIND_IGNORE; |
5576 | status->value.integer = 0; | |
5577 | ||
5578 | stop_reply = queued_stop_reply (ptid); | |
5579 | if (stop_reply != NULL) | |
5580 | return process_stop_reply (stop_reply, status); | |
5581 | ||
5582 | if (rs->cached_wait_status) | |
5583 | /* Use the cached wait status, but only once. */ | |
5584 | rs->cached_wait_status = 0; | |
5585 | else | |
5586 | { | |
5587 | int ret; | |
5588 | ||
5589 | if (!target_is_async_p ()) | |
5590 | { | |
5591 | ofunc = signal (SIGINT, remote_interrupt); | |
5592 | /* If the user hit C-c before this packet, or between packets, | |
5593 | pretend that it was hit right here. */ | |
5594 | if (quit_flag) | |
5595 | { | |
5596 | quit_flag = 0; | |
5597 | remote_interrupt (SIGINT); | |
5598 | } | |
5599 | } | |
5600 | ||
5601 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5602 | _never_ wait for ever -> test on target_is_async_p(). | |
5603 | However, before we do that we need to ensure that the caller | |
5604 | knows how to take the target into/out of async mode. */ | |
5605 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5606 | if (!target_is_async_p ()) | |
5607 | signal (SIGINT, ofunc); | |
5608 | } | |
5609 | ||
5610 | buf = rs->buf; | |
5611 | ||
5612 | remote_stopped_by_watchpoint_p = 0; | |
5613 | ||
5614 | /* We got something. */ | |
5615 | rs->waiting_for_stop_reply = 0; | |
5616 | ||
3a29589a DJ |
5617 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5618 | an 'F' or 'O' packet. */ | |
5619 | if (buf[0] != 'F' && buf[0] != 'O') | |
5620 | rs->ctrlc_pending_p = 0; | |
5621 | ||
74531fed PA |
5622 | switch (buf[0]) |
5623 | { | |
5624 | case 'E': /* Error of some sort. */ | |
5625 | /* We're out of sync with the target now. Did it continue or | |
5626 | not? Not is more likely, so report a stop. */ | |
5627 | warning (_("Remote failure reply: %s"), buf); | |
5628 | status->kind = TARGET_WAITKIND_STOPPED; | |
5629 | status->value.sig = TARGET_SIGNAL_0; | |
5630 | break; | |
5631 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5632 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5633 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5634 | break; |
5635 | case 'T': case 'S': case 'X': case 'W': | |
5636 | { | |
5637 | struct stop_reply *stop_reply; | |
5638 | struct cleanup *old_chain; | |
5639 | ||
5640 | stop_reply = stop_reply_xmalloc (); | |
5641 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5642 | remote_parse_stop_reply (buf, stop_reply); | |
5643 | discard_cleanups (old_chain); | |
5644 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5645 | break; |
5646 | } | |
5647 | case 'O': /* Console output. */ | |
5648 | remote_console_output (buf + 1); | |
e24a49d8 | 5649 | |
c8e38a49 PA |
5650 | /* The target didn't really stop; keep waiting. */ |
5651 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5652 | |
c8e38a49 PA |
5653 | break; |
5654 | case '\0': | |
5655 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5656 | { | |
5657 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5658 | remote system doesn't support it. */ | |
5659 | target_terminal_ours_for_output (); | |
5660 | printf_filtered | |
5661 | ("Can't send signals to this remote system. %s not sent.\n", | |
5662 | target_signal_to_name (last_sent_signal)); | |
5663 | last_sent_signal = TARGET_SIGNAL_0; | |
5664 | target_terminal_inferior (); | |
5665 | ||
5666 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5667 | putpkt ((char *) buf); | |
5668 | ||
5669 | /* We just told the target to resume, so a stop reply is in | |
5670 | order. */ | |
e24a49d8 | 5671 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5672 | break; |
43ff13b4 | 5673 | } |
c8e38a49 PA |
5674 | /* else fallthrough */ |
5675 | default: | |
5676 | warning (_("Invalid remote reply: %s"), buf); | |
5677 | /* Keep waiting. */ | |
5678 | rs->waiting_for_stop_reply = 1; | |
5679 | break; | |
43ff13b4 | 5680 | } |
c8e38a49 | 5681 | |
c8e38a49 | 5682 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5683 | { |
5684 | /* Nothing interesting happened. If we're doing a non-blocking | |
5685 | poll, we're done. Otherwise, go back to waiting. */ | |
5686 | if (options & TARGET_WNOHANG) | |
5687 | return minus_one_ptid; | |
5688 | else | |
5689 | goto again; | |
5690 | } | |
74531fed PA |
5691 | else if (status->kind != TARGET_WAITKIND_EXITED |
5692 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5693 | { |
5694 | if (!ptid_equal (event_ptid, null_ptid)) | |
5695 | record_currthread (event_ptid); | |
5696 | else | |
5697 | event_ptid = inferior_ptid; | |
43ff13b4 | 5698 | } |
74531fed PA |
5699 | else |
5700 | /* A process exit. Invalidate our notion of current thread. */ | |
5701 | record_currthread (minus_one_ptid); | |
79d7f229 | 5702 | |
82f73884 | 5703 | return event_ptid; |
43ff13b4 JM |
5704 | } |
5705 | ||
74531fed PA |
5706 | /* Wait until the remote machine stops, then return, storing status in |
5707 | STATUS just as `wait' would. */ | |
5708 | ||
c8e38a49 | 5709 | static ptid_t |
117de6a9 | 5710 | remote_wait (struct target_ops *ops, |
47608cb1 | 5711 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5712 | { |
5713 | ptid_t event_ptid; | |
5714 | ||
74531fed | 5715 | if (non_stop) |
47608cb1 | 5716 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5717 | else |
47608cb1 | 5718 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5719 | |
74531fed | 5720 | if (target_can_async_p ()) |
c8e38a49 | 5721 | { |
74531fed PA |
5722 | /* If there are are events left in the queue tell the event loop |
5723 | to return here. */ | |
5724 | if (stop_reply_queue) | |
5725 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5726 | } |
c8e38a49 PA |
5727 | |
5728 | return event_ptid; | |
5729 | } | |
5730 | ||
74ca34ce | 5731 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5732 | |
b96ec7ac | 5733 | static int |
56be3814 | 5734 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5735 | { |
5736 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5737 | char *buf, *p; |
b96ec7ac AC |
5738 | char regp[MAX_REGISTER_SIZE]; |
5739 | int i; | |
5740 | ||
74ca34ce DJ |
5741 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5742 | return 0; | |
5743 | ||
5744 | if (reg->pnum == -1) | |
5745 | return 0; | |
5746 | ||
2e9f7625 | 5747 | p = rs->buf; |
fcad0fa4 | 5748 | *p++ = 'p'; |
74ca34ce | 5749 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5750 | *p++ = '\0'; |
1f4437a4 MS |
5751 | putpkt (rs->buf); |
5752 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5753 | |
2e9f7625 DJ |
5754 | buf = rs->buf; |
5755 | ||
74ca34ce DJ |
5756 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5757 | { | |
5758 | case PACKET_OK: | |
5759 | break; | |
5760 | case PACKET_UNKNOWN: | |
5761 | return 0; | |
5762 | case PACKET_ERROR: | |
27a9c0bf MS |
5763 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5764 | gdbarch_register_name (get_regcache_arch (regcache), | |
5765 | reg->regnum), | |
5766 | buf); | |
74ca34ce | 5767 | } |
3f9a994c JB |
5768 | |
5769 | /* If this register is unfetchable, tell the regcache. */ | |
5770 | if (buf[0] == 'x') | |
8480adf2 | 5771 | { |
56be3814 | 5772 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5773 | return 1; |
b96ec7ac | 5774 | } |
b96ec7ac | 5775 | |
3f9a994c JB |
5776 | /* Otherwise, parse and supply the value. */ |
5777 | p = buf; | |
5778 | i = 0; | |
5779 | while (p[0] != 0) | |
5780 | { | |
5781 | if (p[1] == 0) | |
74ca34ce | 5782 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5783 | |
5784 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5785 | p += 2; | |
5786 | } | |
56be3814 | 5787 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5788 | return 1; |
b96ec7ac AC |
5789 | } |
5790 | ||
74ca34ce DJ |
5791 | /* Fetch the registers included in the target's 'g' packet. */ |
5792 | ||
29709017 DJ |
5793 | static int |
5794 | send_g_packet (void) | |
c906108c | 5795 | { |
d01949b6 | 5796 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5797 | int buf_len; |
c906108c | 5798 | |
74ca34ce DJ |
5799 | sprintf (rs->buf, "g"); |
5800 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5801 | |
29709017 DJ |
5802 | /* We can get out of synch in various cases. If the first character |
5803 | in the buffer is not a hex character, assume that has happened | |
5804 | and try to fetch another packet to read. */ | |
5805 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5806 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5807 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5808 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5809 | { | |
5810 | if (remote_debug) | |
5811 | fprintf_unfiltered (gdb_stdlog, | |
5812 | "Bad register packet; fetching a new packet\n"); | |
5813 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5814 | } | |
5815 | ||
74ca34ce DJ |
5816 | buf_len = strlen (rs->buf); |
5817 | ||
5818 | /* Sanity check the received packet. */ | |
5819 | if (buf_len % 2 != 0) | |
5820 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5821 | |
5822 | return buf_len / 2; | |
5823 | } | |
5824 | ||
5825 | static void | |
56be3814 | 5826 | process_g_packet (struct regcache *regcache) |
29709017 | 5827 | { |
4a22f64d | 5828 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5829 | struct remote_state *rs = get_remote_state (); |
5830 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5831 | int i, buf_len; | |
5832 | char *p; | |
5833 | char *regs; | |
5834 | ||
5835 | buf_len = strlen (rs->buf); | |
5836 | ||
5837 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5838 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5839 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5840 | ||
5841 | /* Save the size of the packet sent to us by the target. It is used | |
5842 | as a heuristic when determining the max size of packets that the | |
5843 | target can safely receive. */ | |
5844 | if (rsa->actual_register_packet_size == 0) | |
5845 | rsa->actual_register_packet_size = buf_len; | |
5846 | ||
5847 | /* If this is smaller than we guessed the 'g' packet would be, | |
5848 | update our records. A 'g' reply that doesn't include a register's | |
5849 | value implies either that the register is not available, or that | |
5850 | the 'p' packet must be used. */ | |
5851 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5852 | { |
74ca34ce DJ |
5853 | rsa->sizeof_g_packet = buf_len / 2; |
5854 | ||
4a22f64d | 5855 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5856 | { |
74ca34ce DJ |
5857 | if (rsa->regs[i].pnum == -1) |
5858 | continue; | |
5859 | ||
5860 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5861 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5862 | else |
74ca34ce | 5863 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5864 | } |
74ca34ce | 5865 | } |
b323314b | 5866 | |
74ca34ce | 5867 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5868 | |
5869 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5870 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5871 | |
c906108c SS |
5872 | /* Reply describes registers byte by byte, each byte encoded as two |
5873 | hex characters. Suck them all up, then supply them to the | |
5874 | register cacheing/storage mechanism. */ | |
5875 | ||
74ca34ce | 5876 | p = rs->buf; |
ea9c271d | 5877 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5878 | { |
74ca34ce DJ |
5879 | if (p[0] == 0 || p[1] == 0) |
5880 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5881 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5882 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5883 | |
c906108c | 5884 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5885 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5886 | else |
5887 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5888 | p += 2; | |
5889 | } | |
5890 | ||
a744cf53 MS |
5891 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5892 | { | |
5893 | struct packet_reg *r = &rsa->regs[i]; | |
5894 | ||
5895 | if (r->in_g_packet) | |
5896 | { | |
5897 | if (r->offset * 2 >= strlen (rs->buf)) | |
5898 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5899 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5900 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
5901 | else if (rs->buf[r->offset * 2] == 'x') |
5902 | { | |
5903 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5904 | /* The register isn't available, mark it as such (at | |
5905 | the same time setting the value to zero). */ | |
5906 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5907 | } | |
5908 | else | |
5909 | regcache_raw_supply (regcache, r->regnum, | |
5910 | regs + r->offset); | |
5911 | } | |
5912 | } | |
c906108c SS |
5913 | } |
5914 | ||
29709017 | 5915 | static void |
56be3814 | 5916 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5917 | { |
5918 | send_g_packet (); | |
56be3814 | 5919 | process_g_packet (regcache); |
29709017 DJ |
5920 | } |
5921 | ||
e6e4e701 PA |
5922 | /* Make the remote selected traceframe match GDB's selected |
5923 | traceframe. */ | |
5924 | ||
5925 | static void | |
5926 | set_remote_traceframe (void) | |
5927 | { | |
5928 | int newnum; | |
5929 | ||
5930 | if (remote_traceframe_number == get_traceframe_number ()) | |
5931 | return; | |
5932 | ||
5933 | /* Avoid recursion, remote_trace_find calls us again. */ | |
5934 | remote_traceframe_number = get_traceframe_number (); | |
5935 | ||
5936 | newnum = target_trace_find (tfind_number, | |
5937 | get_traceframe_number (), 0, 0, NULL); | |
5938 | ||
5939 | /* Should not happen. If it does, all bets are off. */ | |
5940 | if (newnum != get_traceframe_number ()) | |
5941 | warning (_("could not set remote traceframe")); | |
5942 | } | |
5943 | ||
74ca34ce | 5944 | static void |
28439f5e PA |
5945 | remote_fetch_registers (struct target_ops *ops, |
5946 | struct regcache *regcache, int regnum) | |
74ca34ce | 5947 | { |
74ca34ce DJ |
5948 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5949 | int i; | |
5950 | ||
e6e4e701 | 5951 | set_remote_traceframe (); |
79d7f229 | 5952 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5953 | |
5954 | if (regnum >= 0) | |
5955 | { | |
5956 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5957 | |
74ca34ce DJ |
5958 | gdb_assert (reg != NULL); |
5959 | ||
5960 | /* If this register might be in the 'g' packet, try that first - | |
5961 | we are likely to read more than one register. If this is the | |
5962 | first 'g' packet, we might be overly optimistic about its | |
5963 | contents, so fall back to 'p'. */ | |
5964 | if (reg->in_g_packet) | |
5965 | { | |
56be3814 | 5966 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5967 | if (reg->in_g_packet) |
5968 | return; | |
5969 | } | |
5970 | ||
56be3814 | 5971 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5972 | return; |
5973 | ||
5974 | /* This register is not available. */ | |
56be3814 | 5975 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5976 | |
5977 | return; | |
5978 | } | |
5979 | ||
56be3814 | 5980 | fetch_registers_using_g (regcache); |
74ca34ce | 5981 | |
4a22f64d | 5982 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5983 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5984 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5985 | { |
5986 | /* This register is not available. */ | |
56be3814 | 5987 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5988 | } |
5989 | } | |
5990 | ||
c906108c SS |
5991 | /* Prepare to store registers. Since we may send them all (using a |
5992 | 'G' request), we have to read out the ones we don't want to change | |
5993 | first. */ | |
5994 | ||
c5aa993b | 5995 | static void |
316f2060 | 5996 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5997 | { |
ea9c271d | 5998 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5999 | int i; |
cfd77fa1 | 6000 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6001 | |
c906108c | 6002 | /* Make sure the entire registers array is valid. */ |
444abaca | 6003 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6004 | { |
6005 | case PACKET_DISABLE: | |
6006 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6007 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6008 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6009 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6010 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6011 | break; |
6012 | case PACKET_ENABLE: | |
6013 | break; | |
6014 | } | |
6015 | } | |
6016 | ||
ad10f812 | 6017 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6018 | packet was not recognized. */ |
5a2468f5 JM |
6019 | |
6020 | static int | |
1f4437a4 MS |
6021 | store_register_using_P (const struct regcache *regcache, |
6022 | struct packet_reg *reg) | |
5a2468f5 | 6023 | { |
4a22f64d | 6024 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6025 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6026 | /* Try storing a single register. */ |
6d820c5c | 6027 | char *buf = rs->buf; |
cfd77fa1 | 6028 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6029 | char *p; |
5a2468f5 | 6030 | |
74ca34ce DJ |
6031 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6032 | return 0; | |
6033 | ||
6034 | if (reg->pnum == -1) | |
6035 | return 0; | |
6036 | ||
ea9c271d | 6037 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6038 | p = buf + strlen (buf); |
56be3814 | 6039 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6040 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6041 | putpkt (rs->buf); |
6042 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6043 | |
74ca34ce DJ |
6044 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6045 | { | |
6046 | case PACKET_OK: | |
6047 | return 1; | |
6048 | case PACKET_ERROR: | |
27a9c0bf MS |
6049 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6050 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6051 | case PACKET_UNKNOWN: |
6052 | return 0; | |
6053 | default: | |
6054 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6055 | } | |
c906108c SS |
6056 | } |
6057 | ||
23860348 MS |
6058 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6059 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6060 | |
6061 | static void | |
56be3814 | 6062 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6063 | { |
d01949b6 | 6064 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6065 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6066 | gdb_byte *regs; |
c906108c SS |
6067 | char *p; |
6068 | ||
193cb69f AC |
6069 | /* Extract all the registers in the regcache copying them into a |
6070 | local buffer. */ | |
6071 | { | |
b323314b | 6072 | int i; |
a744cf53 | 6073 | |
ea9c271d DJ |
6074 | regs = alloca (rsa->sizeof_g_packet); |
6075 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6076 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6077 | { |
ea9c271d | 6078 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6079 | |
b323314b | 6080 | if (r->in_g_packet) |
56be3814 | 6081 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6082 | } |
6083 | } | |
c906108c SS |
6084 | |
6085 | /* Command describes registers byte by byte, | |
6086 | each byte encoded as two hex characters. */ | |
6d820c5c | 6087 | p = rs->buf; |
193cb69f | 6088 | *p++ = 'G'; |
74ca34ce DJ |
6089 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6090 | updated. */ | |
6091 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6092 | putpkt (rs->buf); |
6093 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6094 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6095 | error (_("Could not write registers; remote failure reply '%s'"), |
6096 | rs->buf); | |
c906108c | 6097 | } |
74ca34ce DJ |
6098 | |
6099 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6100 | of the register cache buffer. FIXME: ignores errors. */ | |
6101 | ||
6102 | static void | |
28439f5e PA |
6103 | remote_store_registers (struct target_ops *ops, |
6104 | struct regcache *regcache, int regnum) | |
74ca34ce | 6105 | { |
74ca34ce DJ |
6106 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6107 | int i; | |
6108 | ||
e6e4e701 | 6109 | set_remote_traceframe (); |
79d7f229 | 6110 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6111 | |
6112 | if (regnum >= 0) | |
6113 | { | |
6114 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6115 | |
74ca34ce DJ |
6116 | gdb_assert (reg != NULL); |
6117 | ||
6118 | /* Always prefer to store registers using the 'P' packet if | |
6119 | possible; we often change only a small number of registers. | |
6120 | Sometimes we change a larger number; we'd need help from a | |
6121 | higher layer to know to use 'G'. */ | |
56be3814 | 6122 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6123 | return; |
6124 | ||
6125 | /* For now, don't complain if we have no way to write the | |
6126 | register. GDB loses track of unavailable registers too | |
6127 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6128 | any way to read the register, either... */ |
74ca34ce DJ |
6129 | if (!reg->in_g_packet) |
6130 | return; | |
6131 | ||
56be3814 | 6132 | store_registers_using_G (regcache); |
74ca34ce DJ |
6133 | return; |
6134 | } | |
6135 | ||
56be3814 | 6136 | store_registers_using_G (regcache); |
74ca34ce | 6137 | |
4a22f64d | 6138 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6139 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6140 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6141 | /* See above for why we do not issue an error here. */ |
6142 | continue; | |
6143 | } | |
c906108c SS |
6144 | \f |
6145 | ||
6146 | /* Return the number of hex digits in num. */ | |
6147 | ||
6148 | static int | |
fba45db2 | 6149 | hexnumlen (ULONGEST num) |
c906108c SS |
6150 | { |
6151 | int i; | |
6152 | ||
6153 | for (i = 0; num != 0; i++) | |
6154 | num >>= 4; | |
6155 | ||
6156 | return max (i, 1); | |
6157 | } | |
6158 | ||
2df3850c | 6159 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6160 | |
6161 | static int | |
fba45db2 | 6162 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6163 | { |
c906108c | 6164 | int len = hexnumlen (num); |
a744cf53 | 6165 | |
2df3850c JM |
6166 | return hexnumnstr (buf, num, len); |
6167 | } | |
6168 | ||
c906108c | 6169 | |
2df3850c | 6170 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6171 | |
2df3850c | 6172 | static int |
fba45db2 | 6173 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6174 | { |
6175 | int i; | |
6176 | ||
6177 | buf[width] = '\0'; | |
6178 | ||
6179 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6180 | { |
c5aa993b | 6181 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6182 | num >>= 4; |
6183 | } | |
6184 | ||
2df3850c | 6185 | return width; |
c906108c SS |
6186 | } |
6187 | ||
23860348 | 6188 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6189 | |
6190 | static CORE_ADDR | |
fba45db2 | 6191 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6192 | { |
911c95a5 | 6193 | int address_size = remote_address_size; |
a744cf53 | 6194 | |
911c95a5 UW |
6195 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6196 | if (!address_size) | |
1cf3db46 | 6197 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6198 | |
6199 | if (address_size > 0 | |
6200 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6201 | { |
6202 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6203 | in a ULONGEST variable. */ |
c906108c | 6204 | ULONGEST mask = 1; |
a744cf53 | 6205 | |
911c95a5 | 6206 | mask = (mask << address_size) - 1; |
c906108c SS |
6207 | addr &= mask; |
6208 | } | |
6209 | return addr; | |
6210 | } | |
6211 | ||
a31ea83d DJ |
6212 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6213 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6214 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6215 | (which may be more than *OUT_LEN due to escape characters). The | |
6216 | total number of bytes in the output buffer will be at most | |
6217 | OUT_MAXLEN. */ | |
6218 | ||
6219 | static int | |
6220 | remote_escape_output (const gdb_byte *buffer, int len, | |
6221 | gdb_byte *out_buf, int *out_len, | |
6222 | int out_maxlen) | |
6223 | { | |
6224 | int input_index, output_index; | |
6225 | ||
6226 | output_index = 0; | |
6227 | for (input_index = 0; input_index < len; input_index++) | |
6228 | { | |
6229 | gdb_byte b = buffer[input_index]; | |
6230 | ||
6231 | if (b == '$' || b == '#' || b == '}') | |
6232 | { | |
6233 | /* These must be escaped. */ | |
6234 | if (output_index + 2 > out_maxlen) | |
6235 | break; | |
6236 | out_buf[output_index++] = '}'; | |
6237 | out_buf[output_index++] = b ^ 0x20; | |
6238 | } | |
6239 | else | |
6240 | { | |
6241 | if (output_index + 1 > out_maxlen) | |
6242 | break; | |
6243 | out_buf[output_index++] = b; | |
6244 | } | |
6245 | } | |
6246 | ||
6247 | *out_len = input_index; | |
6248 | return output_index; | |
6249 | } | |
6250 | ||
0876f84a DJ |
6251 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6252 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6253 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6254 | ||
6255 | This function reverses remote_escape_output. It allows more | |
6256 | escaped characters than that function does, in particular because | |
6257 | '*' must be escaped to avoid the run-length encoding processing | |
6258 | in reading packets. */ | |
6259 | ||
6260 | static int | |
6261 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6262 | gdb_byte *out_buf, int out_maxlen) | |
6263 | { | |
6264 | int input_index, output_index; | |
6265 | int escaped; | |
6266 | ||
6267 | output_index = 0; | |
6268 | escaped = 0; | |
6269 | for (input_index = 0; input_index < len; input_index++) | |
6270 | { | |
6271 | gdb_byte b = buffer[input_index]; | |
6272 | ||
6273 | if (output_index + 1 > out_maxlen) | |
6274 | { | |
6275 | warning (_("Received too much data from remote target;" | |
6276 | " ignoring overflow.")); | |
6277 | return output_index; | |
6278 | } | |
6279 | ||
6280 | if (escaped) | |
6281 | { | |
6282 | out_buf[output_index++] = b ^ 0x20; | |
6283 | escaped = 0; | |
6284 | } | |
6285 | else if (b == '}') | |
6286 | escaped = 1; | |
6287 | else | |
6288 | out_buf[output_index++] = b; | |
6289 | } | |
6290 | ||
6291 | if (escaped) | |
6292 | error (_("Unmatched escape character in target response.")); | |
6293 | ||
6294 | return output_index; | |
6295 | } | |
6296 | ||
c906108c SS |
6297 | /* Determine whether the remote target supports binary downloading. |
6298 | This is accomplished by sending a no-op memory write of zero length | |
6299 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6300 | the whole packet, since many stubs strip the eighth bit and |
6301 | subsequently compute a wrong checksum, which causes real havoc with | |
6302 | remote_write_bytes. | |
7a292a7a | 6303 | |
96baa820 | 6304 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6305 | clean. In cases like this, the user should clear "remote |
23860348 | 6306 | X-packet". */ |
96baa820 | 6307 | |
c906108c | 6308 | static void |
fba45db2 | 6309 | check_binary_download (CORE_ADDR addr) |
c906108c | 6310 | { |
d01949b6 | 6311 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6312 | |
444abaca | 6313 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6314 | { |
96baa820 JM |
6315 | case PACKET_DISABLE: |
6316 | break; | |
6317 | case PACKET_ENABLE: | |
6318 | break; | |
6319 | case PACKET_SUPPORT_UNKNOWN: | |
6320 | { | |
96baa820 | 6321 | char *p; |
802188a7 | 6322 | |
2e9f7625 | 6323 | p = rs->buf; |
96baa820 JM |
6324 | *p++ = 'X'; |
6325 | p += hexnumstr (p, (ULONGEST) addr); | |
6326 | *p++ = ','; | |
6327 | p += hexnumstr (p, (ULONGEST) 0); | |
6328 | *p++ = ':'; | |
6329 | *p = '\0'; | |
802188a7 | 6330 | |
2e9f7625 | 6331 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6332 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6333 | |
2e9f7625 | 6334 | if (rs->buf[0] == '\0') |
96baa820 JM |
6335 | { |
6336 | if (remote_debug) | |
6337 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6338 | "binary downloading NOT " |
6339 | "supported by target\n"); | |
444abaca | 6340 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6341 | } |
6342 | else | |
6343 | { | |
6344 | if (remote_debug) | |
6345 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6346 | "binary downloading supported by target\n"); |
444abaca | 6347 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6348 | } |
6349 | break; | |
6350 | } | |
c906108c SS |
6351 | } |
6352 | } | |
6353 | ||
6354 | /* Write memory data directly to the remote machine. | |
6355 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6356 | HEADER is the starting part of the packet. |
c906108c SS |
6357 | MEMADDR is the address in the remote memory space. |
6358 | MYADDR is the address of the buffer in our space. | |
6359 | LEN is the number of bytes. | |
a76d924d DJ |
6360 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6361 | should send data as binary ('X'), or hex-encoded ('M'). | |
6362 | ||
6363 | The function creates packet of the form | |
6364 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6365 | ||
6366 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6367 | ||
6368 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6369 | are omitted. | |
6370 | ||
6371 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6372 | error. Only transfer a single packet. */ |
c906108c | 6373 | |
a76d924d DJ |
6374 | static int |
6375 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6376 | const gdb_byte *myaddr, int len, | |
6377 | char packet_format, int use_length) | |
c906108c | 6378 | { |
6d820c5c | 6379 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6380 | char *p; |
a76d924d DJ |
6381 | char *plen = NULL; |
6382 | int plenlen = 0; | |
917317f4 JM |
6383 | int todo; |
6384 | int nr_bytes; | |
a257b5bb | 6385 | int payload_size; |
6765f3e5 | 6386 | int payload_length; |
a76d924d DJ |
6387 | int header_length; |
6388 | ||
6389 | if (packet_format != 'X' && packet_format != 'M') | |
6390 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6391 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6392 | |
b2182ed2 DJ |
6393 | if (len <= 0) |
6394 | return 0; | |
6395 | ||
3de11b2e | 6396 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6397 | |
6d820c5c DJ |
6398 | /* The packet buffer will be large enough for the payload; |
6399 | get_memory_packet_size ensures this. */ | |
a76d924d | 6400 | rs->buf[0] = '\0'; |
c906108c | 6401 | |
a257b5bb | 6402 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6403 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6404 | ||
a76d924d DJ |
6405 | payload_size -= strlen ("$,:#NN"); |
6406 | if (!use_length) | |
0df8b418 | 6407 | /* The comma won't be used. */ |
a76d924d DJ |
6408 | payload_size += 1; |
6409 | header_length = strlen (header); | |
6410 | payload_size -= header_length; | |
3de11b2e | 6411 | payload_size -= hexnumlen (memaddr); |
c906108c | 6412 | |
a76d924d | 6413 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6414 | |
a76d924d DJ |
6415 | strcat (rs->buf, header); |
6416 | p = rs->buf + strlen (header); | |
6417 | ||
6418 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6419 | if (packet_format == 'X') | |
c906108c | 6420 | { |
23860348 | 6421 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6422 | todo = min (len, payload_size); |
a76d924d DJ |
6423 | if (use_length) |
6424 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6425 | todo = min (todo, payload_size); |
a76d924d DJ |
6426 | } |
6427 | else | |
6428 | { | |
23860348 | 6429 | /* Num bytes that will fit. */ |
a257b5bb | 6430 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6431 | if (use_length) |
6432 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6433 | todo = min (todo, payload_size / 2); |
917317f4 | 6434 | } |
a76d924d | 6435 | |
3de11b2e NS |
6436 | if (todo <= 0) |
6437 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6438 | _("minimum packet size too small to write data")); |
802188a7 | 6439 | |
6765f3e5 DJ |
6440 | /* If we already need another packet, then try to align the end |
6441 | of this packet to a useful boundary. */ | |
6442 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6443 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6444 | ||
a257b5bb | 6445 | /* Append "<memaddr>". */ |
917317f4 JM |
6446 | memaddr = remote_address_masked (memaddr); |
6447 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6448 | |
a76d924d DJ |
6449 | if (use_length) |
6450 | { | |
6451 | /* Append ",". */ | |
6452 | *p++ = ','; | |
802188a7 | 6453 | |
a76d924d DJ |
6454 | /* Append <len>. Retain the location/size of <len>. It may need to |
6455 | be adjusted once the packet body has been created. */ | |
6456 | plen = p; | |
6457 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6458 | p += plenlen; | |
6459 | } | |
a257b5bb AC |
6460 | |
6461 | /* Append ":". */ | |
917317f4 JM |
6462 | *p++ = ':'; |
6463 | *p = '\0'; | |
802188a7 | 6464 | |
a257b5bb | 6465 | /* Append the packet body. */ |
a76d924d | 6466 | if (packet_format == 'X') |
917317f4 | 6467 | { |
917317f4 JM |
6468 | /* Binary mode. Send target system values byte by byte, in |
6469 | increasing byte addresses. Only escape certain critical | |
6470 | characters. */ | |
6765f3e5 DJ |
6471 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6472 | payload_size); | |
6473 | ||
6474 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6475 | a second try to keep the end of the packet aligned. Don't do |
6476 | this if the packet is tiny. */ | |
6477 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6478 | { |
6479 | int new_nr_bytes; | |
6480 | ||
6481 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6482 | - memaddr); | |
6483 | if (new_nr_bytes != nr_bytes) | |
6484 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6485 | p, &nr_bytes, | |
6486 | payload_size); | |
6487 | } | |
6488 | ||
6489 | p += payload_length; | |
a76d924d | 6490 | if (use_length && nr_bytes < todo) |
c906108c | 6491 | { |
802188a7 | 6492 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6493 | and we have actually sent fewer bytes than planned. |
6494 | Fix-up the length field of the packet. Use the same | |
6495 | number of characters as before. */ | |
917317f4 JM |
6496 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6497 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6498 | } |
a76d924d DJ |
6499 | } |
6500 | else | |
6501 | { | |
917317f4 JM |
6502 | /* Normal mode: Send target system values byte by byte, in |
6503 | increasing byte addresses. Each byte is encoded as a two hex | |
6504 | value. */ | |
2644f393 | 6505 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6506 | p += 2 * nr_bytes; |
c906108c | 6507 | } |
802188a7 | 6508 | |
2e9f7625 | 6509 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6510 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6511 | |
2e9f7625 | 6512 | if (rs->buf[0] == 'E') |
917317f4 JM |
6513 | { |
6514 | /* There is no correspondance between what the remote protocol | |
6515 | uses for errors and errno codes. We would like a cleaner way | |
6516 | of representing errors (big enough to include errno codes, | |
6517 | bfd_error codes, and others). But for now just return EIO. */ | |
6518 | errno = EIO; | |
6519 | return 0; | |
6520 | } | |
802188a7 | 6521 | |
23860348 MS |
6522 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6523 | fewer bytes than we'd planned. */ | |
917317f4 | 6524 | return nr_bytes; |
c906108c SS |
6525 | } |
6526 | ||
a76d924d DJ |
6527 | /* Write memory data directly to the remote machine. |
6528 | This does not inform the data cache; the data cache uses this. | |
6529 | MEMADDR is the address in the remote memory space. | |
6530 | MYADDR is the address of the buffer in our space. | |
6531 | LEN is the number of bytes. | |
6532 | ||
6533 | Returns number of bytes transferred, or 0 (setting errno) for | |
6534 | error. Only transfer a single packet. */ | |
6535 | ||
f7605bc2 | 6536 | static int |
a76d924d DJ |
6537 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
6538 | { | |
6539 | char *packet_format = 0; | |
6540 | ||
6541 | /* Check whether the target supports binary download. */ | |
6542 | check_binary_download (memaddr); | |
6543 | ||
6544 | switch (remote_protocol_packets[PACKET_X].support) | |
6545 | { | |
6546 | case PACKET_ENABLE: | |
6547 | packet_format = "X"; | |
6548 | break; | |
6549 | case PACKET_DISABLE: | |
6550 | packet_format = "M"; | |
6551 | break; | |
6552 | case PACKET_SUPPORT_UNKNOWN: | |
6553 | internal_error (__FILE__, __LINE__, | |
6554 | _("remote_write_bytes: bad internal state")); | |
6555 | default: | |
6556 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6557 | } | |
6558 | ||
6559 | return remote_write_bytes_aux (packet_format, | |
6560 | memaddr, myaddr, len, packet_format[0], 1); | |
6561 | } | |
6562 | ||
c906108c SS |
6563 | /* Read memory data directly from the remote machine. |
6564 | This does not use the data cache; the data cache uses this. | |
6565 | MEMADDR is the address in the remote memory space. | |
6566 | MYADDR is the address of the buffer in our space. | |
6567 | LEN is the number of bytes. | |
6568 | ||
6569 | Returns number of bytes transferred, or 0 for error. */ | |
6570 | ||
f7605bc2 | 6571 | static int |
cfd77fa1 | 6572 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6573 | { |
6d820c5c | 6574 | struct remote_state *rs = get_remote_state (); |
23860348 | 6575 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6576 | char *p; |
6577 | int todo; | |
6578 | int i; | |
c906108c | 6579 | |
b2182ed2 DJ |
6580 | if (len <= 0) |
6581 | return 0; | |
6582 | ||
11cf8741 | 6583 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6584 | /* The packet buffer will be large enough for the payload; |
6585 | get_memory_packet_size ensures this. */ | |
c906108c | 6586 | |
f7605bc2 PA |
6587 | /* Number if bytes that will fit. */ |
6588 | todo = min (len, max_buf_size / 2); | |
c906108c | 6589 | |
f7605bc2 PA |
6590 | /* Construct "m"<memaddr>","<len>". */ |
6591 | memaddr = remote_address_masked (memaddr); | |
6592 | p = rs->buf; | |
6593 | *p++ = 'm'; | |
6594 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6595 | *p++ = ','; | |
6596 | p += hexnumstr (p, (ULONGEST) todo); | |
6597 | *p = '\0'; | |
6598 | putpkt (rs->buf); | |
6599 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6600 | if (rs->buf[0] == 'E' | |
6601 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6602 | && rs->buf[3] == '\0') | |
6603 | { | |
6604 | /* There is no correspondance between what the remote protocol | |
6605 | uses for errors and errno codes. We would like a cleaner way | |
6606 | of representing errors (big enough to include errno codes, | |
6607 | bfd_error codes, and others). But for now just return | |
6608 | EIO. */ | |
6609 | errno = EIO; | |
6610 | return 0; | |
c906108c | 6611 | } |
f7605bc2 PA |
6612 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6613 | characters. */ | |
6614 | p = rs->buf; | |
6615 | i = hex2bin (p, myaddr, todo); | |
6616 | /* Return what we have. Let higher layers handle partial reads. */ | |
6617 | return i; | |
c906108c | 6618 | } |
74531fed PA |
6619 | \f |
6620 | ||
6621 | /* Remote notification handler. */ | |
6622 | ||
6623 | static void | |
6624 | handle_notification (char *buf, size_t length) | |
6625 | { | |
6626 | if (strncmp (buf, "Stop:", 5) == 0) | |
6627 | { | |
6628 | if (pending_stop_reply) | |
0723dbf5 PA |
6629 | { |
6630 | /* We've already parsed the in-flight stop-reply, but the | |
6631 | stub for some reason thought we didn't, possibly due to | |
6632 | timeout on its side. Just ignore it. */ | |
6633 | if (remote_debug) | |
6634 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6635 | } | |
74531fed PA |
6636 | else |
6637 | { | |
6638 | struct cleanup *old_chain; | |
6639 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6640 | |
74531fed PA |
6641 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6642 | ||
6643 | remote_parse_stop_reply (buf + 5, reply); | |
6644 | ||
6645 | discard_cleanups (old_chain); | |
6646 | ||
6647 | /* Be careful to only set it after parsing, since an error | |
6648 | may be thrown then. */ | |
6649 | pending_stop_reply = reply; | |
6650 | ||
6651 | /* Notify the event loop there's a stop reply to acknowledge | |
6652 | and that there may be more events to fetch. */ | |
6653 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6654 | |
6655 | if (remote_debug) | |
6656 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6657 | } |
6658 | } | |
6659 | else | |
6660 | /* We ignore notifications we don't recognize, for compatibility | |
6661 | with newer stubs. */ | |
6662 | ; | |
6663 | } | |
6664 | ||
c906108c SS |
6665 | \f |
6666 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6667 | transferring to or from debugger address BUFFER. Write to inferior |
6668 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6669 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6670 | |
c906108c | 6671 | static int |
961cb7b5 | 6672 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6673 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6674 | struct target_ops *target) |
c906108c | 6675 | { |
4930751a C |
6676 | int res; |
6677 | ||
e6e4e701 | 6678 | set_remote_traceframe (); |
82f73884 PA |
6679 | set_general_thread (inferior_ptid); |
6680 | ||
4930751a | 6681 | if (should_write) |
b2182ed2 | 6682 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6683 | else |
b2182ed2 | 6684 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6685 | |
6686 | return res; | |
c906108c SS |
6687 | } |
6688 | ||
a76d924d DJ |
6689 | /* Sends a packet with content determined by the printf format string |
6690 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6691 | whether the packet was a success, a failure, or unknown. */ | |
6692 | ||
2c0b251b | 6693 | static enum packet_result |
a76d924d DJ |
6694 | remote_send_printf (const char *format, ...) |
6695 | { | |
6696 | struct remote_state *rs = get_remote_state (); | |
6697 | int max_size = get_remote_packet_size (); | |
a76d924d | 6698 | va_list ap; |
a744cf53 | 6699 | |
a76d924d DJ |
6700 | va_start (ap, format); |
6701 | ||
6702 | rs->buf[0] = '\0'; | |
6703 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6704 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6705 | |
6706 | if (putpkt (rs->buf) < 0) | |
6707 | error (_("Communication problem with target.")); | |
6708 | ||
6709 | rs->buf[0] = '\0'; | |
6710 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6711 | ||
6712 | return packet_check_result (rs->buf); | |
6713 | } | |
6714 | ||
6715 | static void | |
6716 | restore_remote_timeout (void *p) | |
6717 | { | |
6718 | int value = *(int *)p; | |
a744cf53 | 6719 | |
a76d924d DJ |
6720 | remote_timeout = value; |
6721 | } | |
6722 | ||
6723 | /* Flash writing can take quite some time. We'll set | |
6724 | effectively infinite timeout for flash operations. | |
6725 | In future, we'll need to decide on a better approach. */ | |
6726 | static const int remote_flash_timeout = 1000; | |
6727 | ||
6728 | static void | |
6729 | remote_flash_erase (struct target_ops *ops, | |
6730 | ULONGEST address, LONGEST length) | |
6731 | { | |
5af949e3 | 6732 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6733 | int saved_remote_timeout = remote_timeout; |
6734 | enum packet_result ret; | |
a76d924d DJ |
6735 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6736 | &saved_remote_timeout); | |
a744cf53 | 6737 | |
a76d924d DJ |
6738 | remote_timeout = remote_flash_timeout; |
6739 | ||
6740 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6741 | phex (address, addr_size), |
a76d924d DJ |
6742 | phex (length, 4)); |
6743 | switch (ret) | |
6744 | { | |
6745 | case PACKET_UNKNOWN: | |
6746 | error (_("Remote target does not support flash erase")); | |
6747 | case PACKET_ERROR: | |
6748 | error (_("Error erasing flash with vFlashErase packet")); | |
6749 | default: | |
6750 | break; | |
6751 | } | |
6752 | ||
6753 | do_cleanups (back_to); | |
6754 | } | |
6755 | ||
6756 | static LONGEST | |
6757 | remote_flash_write (struct target_ops *ops, | |
6758 | ULONGEST address, LONGEST length, | |
6759 | const gdb_byte *data) | |
6760 | { | |
6761 | int saved_remote_timeout = remote_timeout; | |
6762 | int ret; | |
6763 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6764 | &saved_remote_timeout); | |
6765 | ||
6766 | remote_timeout = remote_flash_timeout; | |
6767 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6768 | do_cleanups (back_to); | |
6769 | ||
6770 | return ret; | |
6771 | } | |
6772 | ||
6773 | static void | |
6774 | remote_flash_done (struct target_ops *ops) | |
6775 | { | |
6776 | int saved_remote_timeout = remote_timeout; | |
6777 | int ret; | |
6778 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6779 | &saved_remote_timeout); | |
6780 | ||
6781 | remote_timeout = remote_flash_timeout; | |
6782 | ret = remote_send_printf ("vFlashDone"); | |
6783 | do_cleanups (back_to); | |
6784 | ||
6785 | switch (ret) | |
6786 | { | |
6787 | case PACKET_UNKNOWN: | |
6788 | error (_("Remote target does not support vFlashDone")); | |
6789 | case PACKET_ERROR: | |
6790 | error (_("Error finishing flash operation")); | |
6791 | default: | |
6792 | break; | |
6793 | } | |
6794 | } | |
6795 | ||
c906108c | 6796 | static void |
fba45db2 | 6797 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6798 | { |
6799 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6800 | } | |
6801 | \f | |
6802 | /* Stuff for dealing with the packets which are part of this protocol. | |
6803 | See comment at top of file for details. */ | |
6804 | ||
0876f84a | 6805 | /* Read a single character from the remote end. */ |
c906108c SS |
6806 | |
6807 | static int | |
fba45db2 | 6808 | readchar (int timeout) |
c906108c SS |
6809 | { |
6810 | int ch; | |
6811 | ||
2cd58942 | 6812 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6813 | |
2acceee2 | 6814 | if (ch >= 0) |
0876f84a | 6815 | return ch; |
2acceee2 JM |
6816 | |
6817 | switch ((enum serial_rc) ch) | |
c906108c SS |
6818 | { |
6819 | case SERIAL_EOF: | |
ce5ce7ed | 6820 | pop_target (); |
8a3fe4f8 | 6821 | error (_("Remote connection closed")); |
2acceee2 | 6822 | /* no return */ |
c906108c | 6823 | case SERIAL_ERROR: |
4ac8c4da | 6824 | pop_target (); |
3e43a32a MS |
6825 | perror_with_name (_("Remote communication error. " |
6826 | "Target disconnected.")); | |
2acceee2 | 6827 | /* no return */ |
c906108c | 6828 | case SERIAL_TIMEOUT: |
2acceee2 | 6829 | break; |
c906108c | 6830 | } |
2acceee2 | 6831 | return ch; |
c906108c SS |
6832 | } |
6833 | ||
6d820c5c DJ |
6834 | /* Send the command in *BUF to the remote machine, and read the reply |
6835 | into *BUF. Report an error if we get an error reply. Resize | |
6836 | *BUF using xrealloc if necessary to hold the result, and update | |
6837 | *SIZEOF_BUF. */ | |
c906108c SS |
6838 | |
6839 | static void | |
6d820c5c DJ |
6840 | remote_send (char **buf, |
6841 | long *sizeof_buf) | |
c906108c | 6842 | { |
6d820c5c | 6843 | putpkt (*buf); |
c2d11a7d | 6844 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6845 | |
6d820c5c DJ |
6846 | if ((*buf)[0] == 'E') |
6847 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6848 | } |
6849 | ||
6e5abd65 PA |
6850 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6851 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6852 | etc. The caller is responsible for releasing the returned | |
6853 | memory. */ | |
6854 | ||
6855 | static char * | |
6856 | escape_buffer (const char *buf, int n) | |
6857 | { | |
6858 | struct cleanup *old_chain; | |
6859 | struct ui_file *stb; | |
6860 | char *str; | |
6e5abd65 PA |
6861 | |
6862 | stb = mem_fileopen (); | |
6863 | old_chain = make_cleanup_ui_file_delete (stb); | |
6864 | ||
6865 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6866 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6867 | do_cleanups (old_chain); |
6868 | return str; | |
6869 | } | |
6870 | ||
c906108c SS |
6871 | /* Display a null-terminated packet on stdout, for debugging, using C |
6872 | string notation. */ | |
6873 | ||
6874 | static void | |
fba45db2 | 6875 | print_packet (char *buf) |
c906108c SS |
6876 | { |
6877 | puts_filtered ("\""); | |
43e526b9 | 6878 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6879 | puts_filtered ("\""); |
6880 | } | |
6881 | ||
6882 | int | |
fba45db2 | 6883 | putpkt (char *buf) |
c906108c SS |
6884 | { |
6885 | return putpkt_binary (buf, strlen (buf)); | |
6886 | } | |
6887 | ||
6888 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6889 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6890 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6891 | and for a possible /0 if we are debugging (remote_debug) and want |
6892 | to print the sent packet as a string. */ | |
c906108c SS |
6893 | |
6894 | static int | |
fba45db2 | 6895 | putpkt_binary (char *buf, int cnt) |
c906108c | 6896 | { |
2d717e4f | 6897 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6898 | int i; |
6899 | unsigned char csum = 0; | |
11cf8741 | 6900 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6901 | |
c906108c SS |
6902 | int ch; |
6903 | int tcount = 0; | |
6904 | char *p; | |
6905 | ||
e24a49d8 PA |
6906 | /* Catch cases like trying to read memory or listing threads while |
6907 | we're waiting for a stop reply. The remote server wouldn't be | |
6908 | ready to handle this request, so we'd hang and timeout. We don't | |
6909 | have to worry about this in synchronous mode, because in that | |
6910 | case it's not possible to issue a command while the target is | |
74531fed PA |
6911 | running. This is not a problem in non-stop mode, because in that |
6912 | case, the stub is always ready to process serial input. */ | |
6913 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6914 | error (_("Cannot execute this command while the target is running.")); |
6915 | ||
2d717e4f DJ |
6916 | /* We're sending out a new packet. Make sure we don't look at a |
6917 | stale cached response. */ | |
6918 | rs->cached_wait_status = 0; | |
6919 | ||
c906108c SS |
6920 | /* Copy the packet into buffer BUF2, encapsulating it |
6921 | and giving it a checksum. */ | |
6922 | ||
c906108c SS |
6923 | p = buf2; |
6924 | *p++ = '$'; | |
6925 | ||
6926 | for (i = 0; i < cnt; i++) | |
6927 | { | |
6928 | csum += buf[i]; | |
6929 | *p++ = buf[i]; | |
6930 | } | |
6931 | *p++ = '#'; | |
6932 | *p++ = tohex ((csum >> 4) & 0xf); | |
6933 | *p++ = tohex (csum & 0xf); | |
6934 | ||
6935 | /* Send it over and over until we get a positive ack. */ | |
6936 | ||
6937 | while (1) | |
6938 | { | |
6939 | int started_error_output = 0; | |
6940 | ||
6941 | if (remote_debug) | |
6942 | { | |
6e5abd65 PA |
6943 | struct cleanup *old_chain; |
6944 | char *str; | |
6945 | ||
c906108c | 6946 | *p = '\0'; |
6e5abd65 PA |
6947 | str = escape_buffer (buf2, p - buf2); |
6948 | old_chain = make_cleanup (xfree, str); | |
6949 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6950 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6951 | do_cleanups (old_chain); |
c906108c | 6952 | } |
2cd58942 | 6953 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6954 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6955 | |
a6f3e723 SL |
6956 | /* If this is a no acks version of the remote protocol, send the |
6957 | packet and move on. */ | |
6958 | if (rs->noack_mode) | |
6959 | break; | |
6960 | ||
74531fed PA |
6961 | /* Read until either a timeout occurs (-2) or '+' is read. |
6962 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6963 | while (1) |
6964 | { | |
6965 | ch = readchar (remote_timeout); | |
6966 | ||
c5aa993b | 6967 | if (remote_debug) |
c906108c SS |
6968 | { |
6969 | switch (ch) | |
6970 | { | |
6971 | case '+': | |
1216fa2c | 6972 | case '-': |
c906108c SS |
6973 | case SERIAL_TIMEOUT: |
6974 | case '$': | |
74531fed | 6975 | case '%': |
c906108c SS |
6976 | if (started_error_output) |
6977 | { | |
6978 | putchar_unfiltered ('\n'); | |
6979 | started_error_output = 0; | |
6980 | } | |
6981 | } | |
6982 | } | |
6983 | ||
6984 | switch (ch) | |
6985 | { | |
6986 | case '+': | |
6987 | if (remote_debug) | |
0f71a2f6 | 6988 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6989 | return 1; |
1216fa2c AC |
6990 | case '-': |
6991 | if (remote_debug) | |
6992 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 6993 | /* FALLTHROUGH */ |
c906108c | 6994 | case SERIAL_TIMEOUT: |
c5aa993b | 6995 | tcount++; |
c906108c SS |
6996 | if (tcount > 3) |
6997 | return 0; | |
23860348 | 6998 | break; /* Retransmit buffer. */ |
c906108c SS |
6999 | case '$': |
7000 | { | |
40e3f985 | 7001 | if (remote_debug) |
2bc416ba | 7002 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7003 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7004 | /* It's probably an old response sent because an ACK |
7005 | was lost. Gobble up the packet and ack it so it | |
7006 | doesn't get retransmitted when we resend this | |
7007 | packet. */ | |
6d820c5c | 7008 | skip_frame (); |
d6f7abdf | 7009 | serial_write (remote_desc, "+", 1); |
23860348 | 7010 | continue; /* Now, go look for +. */ |
c906108c | 7011 | } |
74531fed PA |
7012 | |
7013 | case '%': | |
7014 | { | |
7015 | int val; | |
7016 | ||
7017 | /* If we got a notification, handle it, and go back to looking | |
7018 | for an ack. */ | |
7019 | /* We've found the start of a notification. Now | |
7020 | collect the data. */ | |
7021 | val = read_frame (&rs->buf, &rs->buf_size); | |
7022 | if (val >= 0) | |
7023 | { | |
7024 | if (remote_debug) | |
7025 | { | |
6e5abd65 PA |
7026 | struct cleanup *old_chain; |
7027 | char *str; | |
7028 | ||
7029 | str = escape_buffer (rs->buf, val); | |
7030 | old_chain = make_cleanup (xfree, str); | |
7031 | fprintf_unfiltered (gdb_stdlog, | |
7032 | " Notification received: %s\n", | |
7033 | str); | |
7034 | do_cleanups (old_chain); | |
74531fed PA |
7035 | } |
7036 | handle_notification (rs->buf, val); | |
7037 | /* We're in sync now, rewait for the ack. */ | |
7038 | tcount = 0; | |
7039 | } | |
7040 | else | |
7041 | { | |
7042 | if (remote_debug) | |
7043 | { | |
7044 | if (!started_error_output) | |
7045 | { | |
7046 | started_error_output = 1; | |
7047 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7048 | } | |
7049 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7050 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7051 | } | |
7052 | } | |
7053 | continue; | |
7054 | } | |
7055 | /* fall-through */ | |
c906108c SS |
7056 | default: |
7057 | if (remote_debug) | |
7058 | { | |
7059 | if (!started_error_output) | |
7060 | { | |
7061 | started_error_output = 1; | |
0f71a2f6 | 7062 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7063 | } |
0f71a2f6 | 7064 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7065 | } |
7066 | continue; | |
7067 | } | |
23860348 | 7068 | break; /* Here to retransmit. */ |
c906108c SS |
7069 | } |
7070 | ||
7071 | #if 0 | |
7072 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7073 | able to get out next time we call QUIT, without anything as |
7074 | violent as interrupt_query. If we want to provide a way out of | |
7075 | here without getting to the next QUIT, it should be based on | |
7076 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7077 | if (quit_flag) |
7078 | { | |
7079 | quit_flag = 0; | |
7080 | interrupt_query (); | |
7081 | } | |
7082 | #endif | |
7083 | } | |
a6f3e723 | 7084 | return 0; |
c906108c SS |
7085 | } |
7086 | ||
6d820c5c DJ |
7087 | /* Come here after finding the start of a frame when we expected an |
7088 | ack. Do our best to discard the rest of this packet. */ | |
7089 | ||
7090 | static void | |
7091 | skip_frame (void) | |
7092 | { | |
7093 | int c; | |
7094 | ||
7095 | while (1) | |
7096 | { | |
7097 | c = readchar (remote_timeout); | |
7098 | switch (c) | |
7099 | { | |
7100 | case SERIAL_TIMEOUT: | |
7101 | /* Nothing we can do. */ | |
7102 | return; | |
7103 | case '#': | |
7104 | /* Discard the two bytes of checksum and stop. */ | |
7105 | c = readchar (remote_timeout); | |
7106 | if (c >= 0) | |
7107 | c = readchar (remote_timeout); | |
7108 | ||
7109 | return; | |
7110 | case '*': /* Run length encoding. */ | |
7111 | /* Discard the repeat count. */ | |
7112 | c = readchar (remote_timeout); | |
7113 | if (c < 0) | |
7114 | return; | |
7115 | break; | |
7116 | default: | |
7117 | /* A regular character. */ | |
7118 | break; | |
7119 | } | |
7120 | } | |
7121 | } | |
7122 | ||
c906108c | 7123 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7124 | into *BUF, verifying the checksum, length, and handling run-length |
7125 | compression. NUL terminate the buffer. If there is not enough room, | |
7126 | expand *BUF using xrealloc. | |
c906108c | 7127 | |
c2d11a7d JM |
7128 | Returns -1 on error, number of characters in buffer (ignoring the |
7129 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7130 | SERIAL status indications). */ |
c2d11a7d JM |
7131 | |
7132 | static long | |
6d820c5c DJ |
7133 | read_frame (char **buf_p, |
7134 | long *sizeof_buf) | |
c906108c SS |
7135 | { |
7136 | unsigned char csum; | |
c2d11a7d | 7137 | long bc; |
c906108c | 7138 | int c; |
6d820c5c | 7139 | char *buf = *buf_p; |
a6f3e723 | 7140 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7141 | |
7142 | csum = 0; | |
c2d11a7d | 7143 | bc = 0; |
c906108c SS |
7144 | |
7145 | while (1) | |
7146 | { | |
7147 | c = readchar (remote_timeout); | |
c906108c SS |
7148 | switch (c) |
7149 | { | |
7150 | case SERIAL_TIMEOUT: | |
7151 | if (remote_debug) | |
0f71a2f6 | 7152 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7153 | return -1; |
c906108c SS |
7154 | case '$': |
7155 | if (remote_debug) | |
0f71a2f6 JM |
7156 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7157 | gdb_stdlog); | |
23860348 | 7158 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7159 | case '#': |
7160 | { | |
7161 | unsigned char pktcsum; | |
e1b09194 AC |
7162 | int check_0 = 0; |
7163 | int check_1 = 0; | |
c906108c | 7164 | |
c2d11a7d | 7165 | buf[bc] = '\0'; |
c906108c | 7166 | |
e1b09194 AC |
7167 | check_0 = readchar (remote_timeout); |
7168 | if (check_0 >= 0) | |
7169 | check_1 = readchar (remote_timeout); | |
802188a7 | 7170 | |
e1b09194 AC |
7171 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7172 | { | |
7173 | if (remote_debug) | |
2bc416ba | 7174 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7175 | gdb_stdlog); |
e1b09194 AC |
7176 | return -1; |
7177 | } | |
7178 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7179 | { |
7180 | if (remote_debug) | |
2bc416ba | 7181 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7182 | gdb_stdlog); |
40e3f985 FN |
7183 | return -1; |
7184 | } | |
c906108c | 7185 | |
a6f3e723 SL |
7186 | /* Don't recompute the checksum; with no ack packets we |
7187 | don't have any way to indicate a packet retransmission | |
7188 | is necessary. */ | |
7189 | if (rs->noack_mode) | |
7190 | return bc; | |
7191 | ||
e1b09194 | 7192 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7193 | if (csum == pktcsum) |
c2d11a7d | 7194 | return bc; |
c906108c | 7195 | |
c5aa993b | 7196 | if (remote_debug) |
c906108c | 7197 | { |
6e5abd65 PA |
7198 | struct cleanup *old_chain; |
7199 | char *str; | |
7200 | ||
7201 | str = escape_buffer (buf, bc); | |
7202 | old_chain = make_cleanup (xfree, str); | |
7203 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7204 | "Bad checksum, sentsum=0x%x, " |
7205 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7206 | pktcsum, csum, str); |
7207 | do_cleanups (old_chain); | |
c906108c | 7208 | } |
c2d11a7d | 7209 | /* Number of characters in buffer ignoring trailing |
23860348 | 7210 | NULL. */ |
c2d11a7d | 7211 | return -1; |
c906108c | 7212 | } |
23860348 | 7213 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7214 | { |
7215 | int repeat; | |
c906108c | 7216 | |
a744cf53 | 7217 | csum += c; |
b4501125 AC |
7218 | c = readchar (remote_timeout); |
7219 | csum += c; | |
23860348 | 7220 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7221 | |
23860348 | 7222 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7223 | |
6d820c5c | 7224 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7225 | { |
6d820c5c DJ |
7226 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7227 | { | |
7228 | /* Make some more room in the buffer. */ | |
7229 | *sizeof_buf += repeat; | |
7230 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7231 | buf = *buf_p; | |
7232 | } | |
7233 | ||
c2d11a7d JM |
7234 | memset (&buf[bc], buf[bc - 1], repeat); |
7235 | bc += repeat; | |
c2c6d25f JM |
7236 | continue; |
7237 | } | |
7238 | ||
c2d11a7d | 7239 | buf[bc] = '\0'; |
6d820c5c | 7240 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7241 | return -1; |
c2c6d25f | 7242 | } |
c906108c | 7243 | default: |
6d820c5c | 7244 | if (bc >= *sizeof_buf - 1) |
c906108c | 7245 | { |
6d820c5c DJ |
7246 | /* Make some more room in the buffer. */ |
7247 | *sizeof_buf *= 2; | |
7248 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7249 | buf = *buf_p; | |
c906108c SS |
7250 | } |
7251 | ||
6d820c5c DJ |
7252 | buf[bc++] = c; |
7253 | csum += c; | |
7254 | continue; | |
c906108c SS |
7255 | } |
7256 | } | |
7257 | } | |
7258 | ||
7259 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7260 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7261 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7262 | rather than timing out; this is used (in synchronous mode) to wait | |
7263 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7264 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7265 | don't have to change all the calls to getpkt to deal with the | |
7266 | return value, because at the moment I don't know what the right | |
23860348 | 7267 | thing to do it for those. */ |
c906108c | 7268 | void |
6d820c5c DJ |
7269 | getpkt (char **buf, |
7270 | long *sizeof_buf, | |
c2d11a7d | 7271 | int forever) |
d9fcf2fb JM |
7272 | { |
7273 | int timed_out; | |
7274 | ||
7275 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7276 | } | |
7277 | ||
7278 | ||
7279 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7280 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7281 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7282 | rather than timing out; this is used (in synchronous mode) to wait | |
7283 | for a target that is is executing user code to stop. If FOREVER == | |
7284 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7285 | indication of this to the caller. Otherwise return the number of |
7286 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7287 | enough reason to return to the caller. */ | |
7288 | ||
3172dc30 | 7289 | static int |
74531fed PA |
7290 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7291 | int expecting_notif) | |
c906108c | 7292 | { |
2d717e4f | 7293 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7294 | int c; |
7295 | int tries; | |
7296 | int timeout; | |
df4b58fe | 7297 | int val = -1; |
c906108c | 7298 | |
2d717e4f DJ |
7299 | /* We're reading a new response. Make sure we don't look at a |
7300 | previously cached response. */ | |
7301 | rs->cached_wait_status = 0; | |
7302 | ||
6d820c5c | 7303 | strcpy (*buf, "timeout"); |
c906108c SS |
7304 | |
7305 | if (forever) | |
74531fed PA |
7306 | timeout = watchdog > 0 ? watchdog : -1; |
7307 | else if (expecting_notif) | |
7308 | timeout = 0; /* There should already be a char in the buffer. If | |
7309 | not, bail out. */ | |
c906108c SS |
7310 | else |
7311 | timeout = remote_timeout; | |
7312 | ||
7313 | #define MAX_TRIES 3 | |
7314 | ||
74531fed PA |
7315 | /* Process any number of notifications, and then return when |
7316 | we get a packet. */ | |
7317 | for (;;) | |
c906108c | 7318 | { |
74531fed PA |
7319 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7320 | times. */ | |
7321 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7322 | { |
74531fed PA |
7323 | /* This can loop forever if the remote side sends us |
7324 | characters continuously, but if it pauses, we'll get | |
7325 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7326 | we'll count that as a retry. | |
7327 | ||
7328 | Note that even when forever is set, we will only wait | |
7329 | forever prior to the start of a packet. After that, we | |
7330 | expect characters to arrive at a brisk pace. They should | |
7331 | show up within remote_timeout intervals. */ | |
7332 | do | |
7333 | c = readchar (timeout); | |
7334 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7335 | |
7336 | if (c == SERIAL_TIMEOUT) | |
7337 | { | |
74531fed PA |
7338 | if (expecting_notif) |
7339 | return -1; /* Don't complain, it's normal to not get | |
7340 | anything in this case. */ | |
7341 | ||
23860348 | 7342 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7343 | { |
2acceee2 | 7344 | QUIT; |
ce5ce7ed | 7345 | pop_target (); |
489eaeba | 7346 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7347 | } |
c906108c | 7348 | if (remote_debug) |
0f71a2f6 | 7349 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7350 | } |
74531fed PA |
7351 | else |
7352 | { | |
7353 | /* We've found the start of a packet or notification. | |
7354 | Now collect the data. */ | |
7355 | val = read_frame (buf, sizeof_buf); | |
7356 | if (val >= 0) | |
7357 | break; | |
7358 | } | |
7359 | ||
7360 | serial_write (remote_desc, "-", 1); | |
c906108c | 7361 | } |
c906108c | 7362 | |
74531fed PA |
7363 | if (tries > MAX_TRIES) |
7364 | { | |
7365 | /* We have tried hard enough, and just can't receive the | |
7366 | packet/notification. Give up. */ | |
7367 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7368 | |
74531fed PA |
7369 | /* Skip the ack char if we're in no-ack mode. */ |
7370 | if (!rs->noack_mode) | |
7371 | serial_write (remote_desc, "+", 1); | |
7372 | return -1; | |
7373 | } | |
c906108c | 7374 | |
74531fed PA |
7375 | /* If we got an ordinary packet, return that to our caller. */ |
7376 | if (c == '$') | |
c906108c SS |
7377 | { |
7378 | if (remote_debug) | |
43e526b9 | 7379 | { |
6e5abd65 PA |
7380 | struct cleanup *old_chain; |
7381 | char *str; | |
7382 | ||
7383 | str = escape_buffer (*buf, val); | |
7384 | old_chain = make_cleanup (xfree, str); | |
7385 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7386 | do_cleanups (old_chain); | |
43e526b9 | 7387 | } |
a6f3e723 SL |
7388 | |
7389 | /* Skip the ack char if we're in no-ack mode. */ | |
7390 | if (!rs->noack_mode) | |
7391 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7392 | return val; |
c906108c SS |
7393 | } |
7394 | ||
74531fed PA |
7395 | /* If we got a notification, handle it, and go back to looking |
7396 | for a packet. */ | |
7397 | else | |
7398 | { | |
7399 | gdb_assert (c == '%'); | |
7400 | ||
7401 | if (remote_debug) | |
7402 | { | |
6e5abd65 PA |
7403 | struct cleanup *old_chain; |
7404 | char *str; | |
7405 | ||
7406 | str = escape_buffer (*buf, val); | |
7407 | old_chain = make_cleanup (xfree, str); | |
7408 | fprintf_unfiltered (gdb_stdlog, | |
7409 | " Notification received: %s\n", | |
7410 | str); | |
7411 | do_cleanups (old_chain); | |
74531fed | 7412 | } |
c906108c | 7413 | |
74531fed | 7414 | handle_notification (*buf, val); |
c906108c | 7415 | |
74531fed | 7416 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7417 | |
74531fed PA |
7418 | if (expecting_notif) |
7419 | return -1; | |
7420 | } | |
7421 | } | |
7422 | } | |
7423 | ||
7424 | static int | |
7425 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7426 | { | |
7427 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7428 | } | |
7429 | ||
7430 | static int | |
7431 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7432 | { | |
7433 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7434 | } |
74531fed | 7435 | |
c906108c | 7436 | \f |
732f3f12 TT |
7437 | /* A helper function that just calls putpkt; for type correctness. */ |
7438 | ||
7439 | static int | |
7440 | putpkt_for_catch_errors (void *arg) | |
7441 | { | |
7442 | return putpkt (arg); | |
7443 | } | |
7444 | ||
c906108c | 7445 | static void |
7d85a9c0 | 7446 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7447 | { |
23860348 MS |
7448 | /* Use catch_errors so the user can quit from gdb even when we |
7449 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7450 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7451 | |
7452 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7453 | we do or not. For the existing stubs, kill is a noop. */ | |
7454 | target_mourn_inferior (); | |
7455 | } | |
7456 | ||
82f73884 PA |
7457 | static int |
7458 | remote_vkill (int pid, struct remote_state *rs) | |
7459 | { | |
7460 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7461 | return -1; | |
7462 | ||
7463 | /* Tell the remote target to detach. */ | |
7464 | sprintf (rs->buf, "vKill;%x", pid); | |
7465 | putpkt (rs->buf); | |
7466 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7467 | ||
7468 | if (packet_ok (rs->buf, | |
7469 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7470 | return 0; | |
7471 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7472 | return -1; | |
7473 | else | |
7474 | return 1; | |
7475 | } | |
7476 | ||
7477 | static void | |
7d85a9c0 | 7478 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7479 | { |
7480 | int res; | |
7481 | int pid = ptid_get_pid (inferior_ptid); | |
7482 | struct remote_state *rs = get_remote_state (); | |
7483 | ||
7484 | res = remote_vkill (pid, rs); | |
901f9912 | 7485 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7486 | { |
7487 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7488 | to specify the pid. */ | |
7489 | ||
7490 | putpkt ("k"); | |
7491 | #if 0 | |
7492 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7493 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7494 | res = 1; | |
7495 | #else | |
7496 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7497 | we do or not. For the existing stubs, kill is a noop. */ | |
7498 | res = 0; | |
7499 | #endif | |
7500 | } | |
7501 | ||
7502 | if (res != 0) | |
7503 | error (_("Can't kill process")); | |
7504 | ||
82f73884 PA |
7505 | target_mourn_inferior (); |
7506 | } | |
7507 | ||
c906108c | 7508 | static void |
136d6dae | 7509 | remote_mourn (struct target_ops *ops) |
c906108c | 7510 | { |
136d6dae | 7511 | remote_mourn_1 (ops); |
c906108c SS |
7512 | } |
7513 | ||
c906108c SS |
7514 | /* Worker function for remote_mourn. */ |
7515 | static void | |
fba45db2 | 7516 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7517 | { |
7518 | unpush_target (target); | |
ce5ce7ed | 7519 | |
8a2492ee PA |
7520 | /* remote_close takes care of doing most of the clean up. */ |
7521 | generic_mourn_inferior (); | |
c906108c SS |
7522 | } |
7523 | ||
2d717e4f DJ |
7524 | static void |
7525 | extended_remote_mourn_1 (struct target_ops *target) | |
7526 | { | |
7527 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7528 | |
e24a49d8 PA |
7529 | /* In case we got here due to an error, but we're going to stay |
7530 | connected. */ | |
7531 | rs->waiting_for_stop_reply = 0; | |
7532 | ||
74531fed PA |
7533 | /* We're no longer interested in these events. */ |
7534 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7535 | ||
dc1981d7 PA |
7536 | /* If the current general thread belonged to the process we just |
7537 | detached from or has exited, the remote side current general | |
7538 | thread becomes undefined. Considering a case like this: | |
7539 | ||
7540 | - We just got here due to a detach. | |
7541 | - The process that we're detaching from happens to immediately | |
7542 | report a global breakpoint being hit in non-stop mode, in the | |
7543 | same thread we had selected before. | |
7544 | - GDB attaches to this process again. | |
7545 | - This event happens to be the next event we handle. | |
7546 | ||
7547 | GDB would consider that the current general thread didn't need to | |
7548 | be set on the stub side (with Hg), since for all it knew, | |
7549 | GENERAL_THREAD hadn't changed. | |
7550 | ||
7551 | Notice that although in all-stop mode, the remote server always | |
7552 | sets the current thread to the thread reporting the stop event, | |
7553 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7554 | not* change the current thread when reporting a breakpoint hit, | |
7555 | due to the decoupling of event reporting and event handling. | |
7556 | ||
7557 | To keep things simple, we always invalidate our notion of the | |
7558 | current thread. */ | |
7559 | record_currthread (minus_one_ptid); | |
7560 | ||
2d717e4f DJ |
7561 | /* Unlike "target remote", we do not want to unpush the target; then |
7562 | the next time the user says "run", we won't be connected. */ | |
7563 | ||
48aa3c27 PA |
7564 | /* Call common code to mark the inferior as not running. */ |
7565 | generic_mourn_inferior (); | |
7566 | ||
d729566a | 7567 | if (!have_inferiors ()) |
2d717e4f | 7568 | { |
82f73884 PA |
7569 | if (!remote_multi_process_p (rs)) |
7570 | { | |
7571 | /* Check whether the target is running now - some remote stubs | |
7572 | automatically restart after kill. */ | |
7573 | putpkt ("?"); | |
7574 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7575 | ||
7576 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7577 | { | |
3e43a32a MS |
7578 | /* Assume that the target has been restarted. Set |
7579 | inferior_ptid so that bits of core GDB realizes | |
7580 | there's something here, e.g., so that the user can | |
7581 | say "kill" again. */ | |
82f73884 PA |
7582 | inferior_ptid = magic_null_ptid; |
7583 | } | |
82f73884 | 7584 | } |
2d717e4f DJ |
7585 | } |
7586 | } | |
c906108c SS |
7587 | |
7588 | static void | |
136d6dae | 7589 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7590 | { |
136d6dae | 7591 | extended_remote_mourn_1 (ops); |
2d717e4f | 7592 | } |
c906108c | 7593 | |
03583c20 UW |
7594 | static int |
7595 | extended_remote_supports_disable_randomization (void) | |
7596 | { | |
7597 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7598 | == PACKET_ENABLE); | |
7599 | } | |
7600 | ||
7601 | static void | |
7602 | extended_remote_disable_randomization (int val) | |
7603 | { | |
7604 | struct remote_state *rs = get_remote_state (); | |
7605 | char *reply; | |
7606 | ||
7607 | sprintf (rs->buf, "QDisableRandomization:%x", val); | |
7608 | putpkt (rs->buf); | |
7609 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7610 | if (*reply == '\0') | |
7611 | error (_("Target does not support QDisableRandomization.")); | |
7612 | if (strcmp (reply, "OK") != 0) | |
7613 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7614 | } | |
7615 | ||
2d717e4f DJ |
7616 | static int |
7617 | extended_remote_run (char *args) | |
7618 | { | |
7619 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7620 | int len; |
c906108c | 7621 | |
2d717e4f DJ |
7622 | /* If the user has disabled vRun support, or we have detected that |
7623 | support is not available, do not try it. */ | |
7624 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7625 | return -1; | |
424163ea | 7626 | |
2d717e4f DJ |
7627 | strcpy (rs->buf, "vRun;"); |
7628 | len = strlen (rs->buf); | |
c906108c | 7629 | |
2d717e4f DJ |
7630 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7631 | error (_("Remote file name too long for run packet")); | |
7632 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7633 | ||
d1a41061 | 7634 | gdb_assert (args != NULL); |
2d717e4f DJ |
7635 | if (*args) |
7636 | { | |
7637 | struct cleanup *back_to; | |
7638 | int i; | |
7639 | char **argv; | |
7640 | ||
d1a41061 | 7641 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7642 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7643 | for (i = 0; argv[i] != NULL; i++) | |
7644 | { | |
7645 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7646 | error (_("Argument list too long for run packet")); | |
7647 | rs->buf[len++] = ';'; | |
7648 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7649 | } | |
7650 | do_cleanups (back_to); | |
7651 | } | |
7652 | ||
7653 | rs->buf[len++] = '\0'; | |
7654 | ||
7655 | putpkt (rs->buf); | |
7656 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7657 | ||
7658 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7659 | { | |
7660 | /* We have a wait response; we don't need it, though. All is well. */ | |
7661 | return 0; | |
7662 | } | |
7663 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7664 | /* It wasn't disabled before, but it is now. */ | |
7665 | return -1; | |
7666 | else | |
7667 | { | |
7668 | if (remote_exec_file[0] == '\0') | |
7669 | error (_("Running the default executable on the remote target failed; " | |
7670 | "try \"set remote exec-file\"?")); | |
7671 | else | |
7672 | error (_("Running \"%s\" on the remote target failed"), | |
7673 | remote_exec_file); | |
7674 | } | |
c906108c SS |
7675 | } |
7676 | ||
2d717e4f DJ |
7677 | /* In the extended protocol we want to be able to do things like |
7678 | "run" and have them basically work as expected. So we need | |
7679 | a special create_inferior function. We support changing the | |
7680 | executable file and the command line arguments, but not the | |
7681 | environment. */ | |
7682 | ||
43ff13b4 | 7683 | static void |
2d717e4f | 7684 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7685 | char **env, int from_tty) |
43ff13b4 | 7686 | { |
43ff13b4 | 7687 | /* If running asynchronously, register the target file descriptor |
23860348 | 7688 | with the event loop. */ |
75c99385 | 7689 | if (target_can_async_p ()) |
2acceee2 | 7690 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7691 | |
03583c20 UW |
7692 | /* Disable address space randomization if requested (and supported). */ |
7693 | if (extended_remote_supports_disable_randomization ()) | |
7694 | extended_remote_disable_randomization (disable_randomization); | |
7695 | ||
43ff13b4 | 7696 | /* Now restart the remote server. */ |
2d717e4f DJ |
7697 | if (extended_remote_run (args) == -1) |
7698 | { | |
7699 | /* vRun was not supported. Fail if we need it to do what the | |
7700 | user requested. */ | |
7701 | if (remote_exec_file[0]) | |
7702 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7703 | if (args[0]) | |
7704 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7705 | |
2d717e4f DJ |
7706 | /* Fall back to "R". */ |
7707 | extended_remote_restart (); | |
7708 | } | |
424163ea | 7709 | |
6c95b8df PA |
7710 | if (!have_inferiors ()) |
7711 | { | |
7712 | /* Clean up from the last time we ran, before we mark the target | |
7713 | running again. This will mark breakpoints uninserted, and | |
7714 | get_offsets may insert breakpoints. */ | |
7715 | init_thread_list (); | |
7716 | init_wait_for_inferior (); | |
7717 | } | |
45280a52 | 7718 | |
49c62f2e | 7719 | add_current_inferior_and_thread (); |
c0a2216e | 7720 | |
2d717e4f DJ |
7721 | /* Get updated offsets, if the stub uses qOffsets. */ |
7722 | get_offsets (); | |
2d717e4f DJ |
7723 | } |
7724 | ||
7725 | static void | |
136d6dae VP |
7726 | extended_remote_create_inferior (struct target_ops *ops, |
7727 | char *exec_file, char *args, | |
2d717e4f DJ |
7728 | char **env, int from_tty) |
7729 | { | |
75c99385 | 7730 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7731 | } |
c906108c | 7732 | \f |
c5aa993b | 7733 | |
b775012e LM |
7734 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7735 | the list of conditions (in agent expression bytecode format), if any, the | |
7736 | target needs to evaluate. The output is placed into the packet buffer | |
7737 | BUF. */ | |
7738 | ||
7739 | static int | |
7740 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
7741 | struct bp_target_info *bp_tgt, char *buf) | |
7742 | { | |
7743 | struct agent_expr *aexpr = NULL; | |
7744 | int i, ix; | |
7745 | char *pkt; | |
7746 | char *buf_start = buf; | |
7747 | ||
7748 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7749 | return 0; | |
7750 | ||
7751 | buf += strlen (buf); | |
7752 | sprintf (buf, "%s", ";"); | |
7753 | buf++; | |
7754 | ||
7755 | /* Send conditions to the target and free the vector. */ | |
7756 | for (ix = 0; | |
7757 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
7758 | ix++) | |
7759 | { | |
7760 | sprintf (buf, "X%x,", aexpr->len); | |
7761 | buf += strlen (buf); | |
7762 | for (i = 0; i < aexpr->len; ++i) | |
7763 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
7764 | *buf = '\0'; | |
7765 | } | |
7766 | ||
7767 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
7768 | return 0; | |
7769 | } | |
7770 | ||
8181d85f DJ |
7771 | /* Insert a breakpoint. On targets that have software breakpoint |
7772 | support, we ask the remote target to do the work; on targets | |
7773 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7774 | |
7775 | static int | |
a6d9a66e UW |
7776 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7777 | struct bp_target_info *bp_tgt) | |
c906108c | 7778 | { |
d471ea57 AC |
7779 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7780 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7781 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7782 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7783 | |
444abaca | 7784 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7785 | { |
7c0f6dcc | 7786 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7787 | struct remote_state *rs; |
7788 | char *p; | |
7c0f6dcc | 7789 | int bpsize; |
b775012e | 7790 | struct condition_list *cond = NULL; |
4fff2411 | 7791 | |
a1dcb23a | 7792 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7793 | |
7794 | rs = get_remote_state (); | |
7795 | p = rs->buf; | |
802188a7 | 7796 | |
96baa820 JM |
7797 | *(p++) = 'Z'; |
7798 | *(p++) = '0'; | |
7799 | *(p++) = ','; | |
7c0f6dcc | 7800 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7801 | p += hexnumstr (p, addr); |
7c0f6dcc | 7802 | sprintf (p, ",%d", bpsize); |
802188a7 | 7803 | |
b775012e LM |
7804 | if (remote_supports_cond_breakpoints ()) |
7805 | remote_add_target_side_condition (gdbarch, bp_tgt, p); | |
7806 | ||
6d820c5c DJ |
7807 | putpkt (rs->buf); |
7808 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7809 | |
6d820c5c | 7810 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7811 | { |
d471ea57 AC |
7812 | case PACKET_ERROR: |
7813 | return -1; | |
7814 | case PACKET_OK: | |
7c0f6dcc JL |
7815 | bp_tgt->placed_address = addr; |
7816 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7817 | return 0; |
7818 | case PACKET_UNKNOWN: | |
7819 | break; | |
96baa820 JM |
7820 | } |
7821 | } | |
c906108c | 7822 | |
a6d9a66e | 7823 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7824 | } |
7825 | ||
7826 | static int | |
a6d9a66e UW |
7827 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7828 | struct bp_target_info *bp_tgt) | |
c906108c | 7829 | { |
8181d85f | 7830 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7831 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7832 | |
444abaca | 7833 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7834 | { |
6d820c5c | 7835 | char *p = rs->buf; |
802188a7 | 7836 | |
96baa820 JM |
7837 | *(p++) = 'z'; |
7838 | *(p++) = '0'; | |
7839 | *(p++) = ','; | |
7840 | ||
8181d85f DJ |
7841 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7842 | p += hexnumstr (p, addr); | |
7843 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7844 | |
6d820c5c DJ |
7845 | putpkt (rs->buf); |
7846 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7847 | |
6d820c5c | 7848 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7849 | } |
7850 | ||
a6d9a66e | 7851 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7852 | } |
7853 | ||
d471ea57 AC |
7854 | static int |
7855 | watchpoint_to_Z_packet (int type) | |
7856 | { | |
7857 | switch (type) | |
7858 | { | |
7859 | case hw_write: | |
bb858e6a | 7860 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7861 | break; |
7862 | case hw_read: | |
bb858e6a | 7863 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7864 | break; |
7865 | case hw_access: | |
bb858e6a | 7866 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7867 | break; |
7868 | default: | |
8e65ff28 | 7869 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7870 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7871 | } |
7872 | } | |
7873 | ||
3c3bea1c | 7874 | static int |
0cf6dd15 TJB |
7875 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7876 | struct expression *cond) | |
96baa820 | 7877 | { |
d01949b6 | 7878 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7879 | char *p; |
d471ea57 | 7880 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7881 | |
444abaca | 7882 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7883 | return 1; |
802188a7 | 7884 | |
6d820c5c DJ |
7885 | sprintf (rs->buf, "Z%x,", packet); |
7886 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7887 | addr = remote_address_masked (addr); |
7888 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7889 | sprintf (p, ",%x", len); |
802188a7 | 7890 | |
6d820c5c DJ |
7891 | putpkt (rs->buf); |
7892 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7893 | |
6d820c5c | 7894 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7895 | { |
7896 | case PACKET_ERROR: | |
d471ea57 | 7897 | return -1; |
85d721b8 PA |
7898 | case PACKET_UNKNOWN: |
7899 | return 1; | |
d471ea57 AC |
7900 | case PACKET_OK: |
7901 | return 0; | |
7902 | } | |
8e65ff28 | 7903 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7904 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7905 | } |
7906 | ||
d471ea57 | 7907 | |
3c3bea1c | 7908 | static int |
0cf6dd15 TJB |
7909 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
7910 | struct expression *cond) | |
96baa820 | 7911 | { |
d01949b6 | 7912 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7913 | char *p; |
d471ea57 AC |
7914 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7915 | ||
444abaca | 7916 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 7917 | return -1; |
802188a7 | 7918 | |
6d820c5c DJ |
7919 | sprintf (rs->buf, "z%x,", packet); |
7920 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7921 | addr = remote_address_masked (addr); |
7922 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7923 | sprintf (p, ",%x", len); |
6d820c5c DJ |
7924 | putpkt (rs->buf); |
7925 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7926 | |
6d820c5c | 7927 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7928 | { |
7929 | case PACKET_ERROR: | |
7930 | case PACKET_UNKNOWN: | |
7931 | return -1; | |
7932 | case PACKET_OK: | |
7933 | return 0; | |
7934 | } | |
8e65ff28 | 7935 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7936 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7937 | } |
7938 | ||
3c3bea1c | 7939 | |
501eef12 | 7940 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 7941 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 7942 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 7943 | |
480a3f21 PW |
7944 | static int |
7945 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
7946 | { | |
7947 | if (remote_hw_watchpoint_length_limit == 0) | |
7948 | return 0; | |
7949 | else if (remote_hw_watchpoint_length_limit < 0) | |
7950 | return 1; | |
7951 | else if (len <= remote_hw_watchpoint_length_limit) | |
7952 | return 1; | |
7953 | else | |
7954 | return 0; | |
7955 | } | |
7956 | ||
b9362cc7 | 7957 | static int |
3c3bea1c | 7958 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7959 | { |
3c3bea1c GS |
7960 | if (type == bp_hardware_breakpoint) |
7961 | { | |
7962 | if (remote_hw_breakpoint_limit == 0) | |
7963 | return 0; | |
501eef12 AC |
7964 | else if (remote_hw_breakpoint_limit < 0) |
7965 | return 1; | |
3c3bea1c GS |
7966 | else if (cnt <= remote_hw_breakpoint_limit) |
7967 | return 1; | |
7968 | } | |
7969 | else | |
7970 | { | |
7971 | if (remote_hw_watchpoint_limit == 0) | |
7972 | return 0; | |
501eef12 AC |
7973 | else if (remote_hw_watchpoint_limit < 0) |
7974 | return 1; | |
3c3bea1c GS |
7975 | else if (ot) |
7976 | return -1; | |
7977 | else if (cnt <= remote_hw_watchpoint_limit) | |
7978 | return 1; | |
7979 | } | |
7980 | return -1; | |
7981 | } | |
7982 | ||
b9362cc7 | 7983 | static int |
3c3bea1c GS |
7984 | remote_stopped_by_watchpoint (void) |
7985 | { | |
82f73884 | 7986 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7987 | } |
7988 | ||
4aa7a7f5 JJ |
7989 | static int |
7990 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7991 | { |
4aa7a7f5 | 7992 | int rc = 0; |
a744cf53 | 7993 | |
d983da9c | 7994 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7995 | { |
7996 | *addr_p = remote_watch_data_address; | |
7997 | rc = 1; | |
7998 | } | |
7999 | ||
8000 | return rc; | |
3c3bea1c GS |
8001 | } |
8002 | ||
8003 | ||
8004 | static int | |
a6d9a66e UW |
8005 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8006 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8007 | { |
8181d85f | 8008 | CORE_ADDR addr; |
4fff2411 JZ |
8009 | struct remote_state *rs; |
8010 | char *p; | |
802188a7 | 8011 | |
c8189ed1 | 8012 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8013 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8014 | |
a1dcb23a | 8015 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8016 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8017 | |
444abaca | 8018 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8019 | return -1; |
2bc416ba | 8020 | |
4fff2411 JZ |
8021 | rs = get_remote_state (); |
8022 | p = rs->buf; | |
8023 | ||
96baa820 JM |
8024 | *(p++) = 'Z'; |
8025 | *(p++) = '1'; | |
8026 | *(p++) = ','; | |
802188a7 | 8027 | |
8181d85f | 8028 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8029 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 8030 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 8031 | |
b775012e LM |
8032 | if (remote_supports_cond_breakpoints ()) |
8033 | remote_add_target_side_condition (gdbarch, bp_tgt, p); | |
8034 | ||
6d820c5c DJ |
8035 | putpkt (rs->buf); |
8036 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8037 | |
6d820c5c | 8038 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8039 | { |
8040 | case PACKET_ERROR: | |
8041 | case PACKET_UNKNOWN: | |
8042 | return -1; | |
8043 | case PACKET_OK: | |
8044 | return 0; | |
8045 | } | |
8e65ff28 | 8046 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8047 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8048 | } |
8049 | ||
d471ea57 | 8050 | |
802188a7 | 8051 | static int |
a6d9a66e UW |
8052 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8053 | struct bp_target_info *bp_tgt) | |
96baa820 | 8054 | { |
8181d85f | 8055 | CORE_ADDR addr; |
d01949b6 | 8056 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8057 | char *p = rs->buf; |
c8189ed1 | 8058 | |
444abaca | 8059 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8060 | return -1; |
802188a7 | 8061 | |
96baa820 JM |
8062 | *(p++) = 'z'; |
8063 | *(p++) = '1'; | |
8064 | *(p++) = ','; | |
802188a7 | 8065 | |
8181d85f | 8066 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8067 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 8068 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 8069 | |
6d820c5c DJ |
8070 | putpkt (rs->buf); |
8071 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8072 | |
6d820c5c | 8073 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8074 | { |
8075 | case PACKET_ERROR: | |
8076 | case PACKET_UNKNOWN: | |
8077 | return -1; | |
8078 | case PACKET_OK: | |
8079 | return 0; | |
8080 | } | |
8e65ff28 | 8081 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8082 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8083 | } |
96baa820 | 8084 | |
23860348 | 8085 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8086 | |
c5aa993b JM |
8087 | static unsigned long crc32_table[256] = |
8088 | {0, 0}; | |
c906108c SS |
8089 | |
8090 | static unsigned long | |
4a5e7a5b | 8091 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8092 | { |
c5aa993b | 8093 | if (!crc32_table[1]) |
c906108c | 8094 | { |
23860348 | 8095 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8096 | int i, j; |
8097 | unsigned int c; | |
8098 | ||
8099 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8100 | { |
8101 | for (c = i << 24, j = 8; j > 0; --j) | |
8102 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8103 | crc32_table[i] = c; | |
8104 | } | |
c906108c SS |
8105 | } |
8106 | ||
8107 | while (len--) | |
8108 | { | |
8109 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8110 | buf++; | |
8111 | } | |
8112 | return crc; | |
8113 | } | |
8114 | ||
4a5e7a5b PA |
8115 | /* Verify memory using the "qCRC:" request. */ |
8116 | ||
8117 | static int | |
8118 | remote_verify_memory (struct target_ops *ops, | |
8119 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8120 | { | |
8121 | struct remote_state *rs = get_remote_state (); | |
8122 | unsigned long host_crc, target_crc; | |
8123 | char *tmp; | |
8124 | ||
8125 | /* FIXME: assumes lma can fit into long. */ | |
8126 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8127 | (long) lma, (long) size); | |
8128 | putpkt (rs->buf); | |
8129 | ||
8130 | /* Be clever; compute the host_crc before waiting for target | |
8131 | reply. */ | |
8132 | host_crc = crc32 (data, size, 0xffffffff); | |
8133 | ||
8134 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8135 | if (rs->buf[0] == 'E') | |
8136 | return -1; | |
8137 | ||
8138 | if (rs->buf[0] != 'C') | |
8139 | error (_("remote target does not support this operation")); | |
8140 | ||
8141 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8142 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8143 | ||
8144 | return (host_crc == target_crc); | |
8145 | } | |
8146 | ||
c906108c SS |
8147 | /* compare-sections command |
8148 | ||
8149 | With no arguments, compares each loadable section in the exec bfd | |
8150 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8151 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8152 | |
c906108c | 8153 | static void |
fba45db2 | 8154 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8155 | { |
8156 | asection *s; | |
c906108c | 8157 | struct cleanup *old_chain; |
085dd6e6 | 8158 | char *sectdata; |
ce359b09 | 8159 | const char *sectname; |
c906108c SS |
8160 | bfd_size_type size; |
8161 | bfd_vma lma; | |
8162 | int matched = 0; | |
8163 | int mismatched = 0; | |
4a5e7a5b | 8164 | int res; |
c906108c SS |
8165 | |
8166 | if (!exec_bfd) | |
8a3fe4f8 | 8167 | error (_("command cannot be used without an exec file")); |
c906108c | 8168 | |
c5aa993b | 8169 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8170 | { |
8171 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8172 | continue; /* Skip non-loadable section. */ |
c906108c | 8173 | |
2c500098 | 8174 | size = bfd_get_section_size (s); |
c906108c | 8175 | if (size == 0) |
0df8b418 | 8176 | continue; /* Skip zero-length section. */ |
c906108c | 8177 | |
ce359b09 | 8178 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8179 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8180 | continue; /* Not the section selected by user. */ |
c906108c | 8181 | |
0df8b418 | 8182 | matched = 1; /* Do this section. */ |
c906108c | 8183 | lma = s->lma; |
c906108c | 8184 | |
c906108c | 8185 | sectdata = xmalloc (size); |
b8c9b27d | 8186 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8187 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8188 | |
4a5e7a5b PA |
8189 | res = target_verify_memory (sectdata, lma, size); |
8190 | ||
8191 | if (res == -1) | |
5af949e3 UW |
8192 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8193 | paddress (target_gdbarch, lma), | |
8194 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8195 | |
5af949e3 UW |
8196 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8197 | paddress (target_gdbarch, lma), | |
8198 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8199 | if (res) |
c906108c SS |
8200 | printf_filtered ("matched.\n"); |
8201 | else | |
c5aa993b JM |
8202 | { |
8203 | printf_filtered ("MIS-MATCHED!\n"); | |
8204 | mismatched++; | |
8205 | } | |
c906108c SS |
8206 | |
8207 | do_cleanups (old_chain); | |
8208 | } | |
8209 | if (mismatched > 0) | |
8a3fe4f8 AC |
8210 | warning (_("One or more sections of the remote executable does not match\n\ |
8211 | the loaded file\n")); | |
c906108c | 8212 | if (args && !matched) |
a3f17187 | 8213 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8214 | } |
8215 | ||
0e7f50da UW |
8216 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8217 | into remote target. The number of bytes written to the remote | |
8218 | target is returned, or -1 for error. */ | |
8219 | ||
8220 | static LONGEST | |
8221 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8222 | const char *annex, const gdb_byte *writebuf, | |
8223 | ULONGEST offset, LONGEST len, | |
8224 | struct packet_config *packet) | |
8225 | { | |
8226 | int i, buf_len; | |
8227 | ULONGEST n; | |
0e7f50da UW |
8228 | struct remote_state *rs = get_remote_state (); |
8229 | int max_size = get_memory_write_packet_size (); | |
8230 | ||
8231 | if (packet->support == PACKET_DISABLE) | |
8232 | return -1; | |
8233 | ||
8234 | /* Insert header. */ | |
8235 | i = snprintf (rs->buf, max_size, | |
8236 | "qXfer:%s:write:%s:%s:", | |
8237 | object_name, annex ? annex : "", | |
8238 | phex_nz (offset, sizeof offset)); | |
8239 | max_size -= (i + 1); | |
8240 | ||
8241 | /* Escape as much data as fits into rs->buf. */ | |
8242 | buf_len = remote_escape_output | |
8243 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8244 | ||
8245 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8246 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8247 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8248 | return -1; | |
8249 | ||
8250 | unpack_varlen_hex (rs->buf, &n); | |
8251 | return n; | |
8252 | } | |
8253 | ||
0876f84a DJ |
8254 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8255 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8256 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8257 | The number of bytes read may be less than LEN without indicating an | |
8258 | EOF. PACKET is checked and updated to indicate whether the remote | |
8259 | target supports this object. */ | |
8260 | ||
8261 | static LONGEST | |
8262 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8263 | const char *annex, | |
8264 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8265 | struct packet_config *packet) | |
8266 | { | |
8267 | static char *finished_object; | |
8268 | static char *finished_annex; | |
8269 | static ULONGEST finished_offset; | |
8270 | ||
8271 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8272 | LONGEST i, n, packet_len; |
8273 | ||
8274 | if (packet->support == PACKET_DISABLE) | |
8275 | return -1; | |
8276 | ||
8277 | /* Check whether we've cached an end-of-object packet that matches | |
8278 | this request. */ | |
8279 | if (finished_object) | |
8280 | { | |
8281 | if (strcmp (object_name, finished_object) == 0 | |
8282 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8283 | && offset == finished_offset) | |
8284 | return 0; | |
8285 | ||
8286 | /* Otherwise, we're now reading something different. Discard | |
8287 | the cache. */ | |
8288 | xfree (finished_object); | |
8289 | xfree (finished_annex); | |
8290 | finished_object = NULL; | |
8291 | finished_annex = NULL; | |
8292 | } | |
8293 | ||
8294 | /* Request only enough to fit in a single packet. The actual data | |
8295 | may not, since we don't know how much of it will need to be escaped; | |
8296 | the target is free to respond with slightly less data. We subtract | |
8297 | five to account for the response type and the protocol frame. */ | |
8298 | n = min (get_remote_packet_size () - 5, len); | |
8299 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8300 | object_name, annex ? annex : "", | |
8301 | phex_nz (offset, sizeof offset), | |
8302 | phex_nz (n, sizeof n)); | |
8303 | i = putpkt (rs->buf); | |
8304 | if (i < 0) | |
8305 | return -1; | |
8306 | ||
8307 | rs->buf[0] = '\0'; | |
8308 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8309 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8310 | return -1; | |
8311 | ||
8312 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8313 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8314 | ||
8315 | /* 'm' means there is (or at least might be) more data after this | |
8316 | batch. That does not make sense unless there's at least one byte | |
8317 | of data in this reply. */ | |
8318 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8319 | error (_("Remote qXfer reply contained no data.")); | |
8320 | ||
8321 | /* Got some data. */ | |
8322 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8323 | ||
8324 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8325 | or possibly empty. If we have the final block of a non-empty |
8326 | object, record this fact to bypass a subsequent partial read. */ | |
8327 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8328 | { |
8329 | finished_object = xstrdup (object_name); | |
8330 | finished_annex = xstrdup (annex ? annex : ""); | |
8331 | finished_offset = offset + i; | |
8332 | } | |
8333 | ||
8334 | return i; | |
8335 | } | |
8336 | ||
1e3ff5ad | 8337 | static LONGEST |
4b8a223f | 8338 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8339 | const char *annex, gdb_byte *readbuf, |
8340 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8341 | { |
82f73884 | 8342 | struct remote_state *rs; |
c906108c | 8343 | int i; |
6d820c5c | 8344 | char *p2; |
1e3ff5ad | 8345 | char query_type; |
c906108c | 8346 | |
e6e4e701 | 8347 | set_remote_traceframe (); |
82f73884 PA |
8348 | set_general_thread (inferior_ptid); |
8349 | ||
8350 | rs = get_remote_state (); | |
8351 | ||
b2182ed2 | 8352 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8353 | if (object == TARGET_OBJECT_MEMORY) |
8354 | { | |
8355 | int xfered; | |
a744cf53 | 8356 | |
21e3b9b9 DJ |
8357 | errno = 0; |
8358 | ||
2d717e4f DJ |
8359 | /* If the remote target is connected but not running, we should |
8360 | pass this request down to a lower stratum (e.g. the executable | |
8361 | file). */ | |
8362 | if (!target_has_execution) | |
8363 | return 0; | |
8364 | ||
21e3b9b9 | 8365 | if (writebuf != NULL) |
b2182ed2 | 8366 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8367 | else |
b2182ed2 | 8368 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8369 | |
8370 | if (xfered > 0) | |
8371 | return xfered; | |
8372 | else if (xfered == 0 && errno == 0) | |
8373 | return 0; | |
8374 | else | |
8375 | return -1; | |
8376 | } | |
8377 | ||
0df8b418 | 8378 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8379 | if (object == TARGET_OBJECT_SPU) |
8380 | { | |
8381 | if (readbuf) | |
8382 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8383 | &remote_protocol_packets | |
8384 | [PACKET_qXfer_spu_read]); | |
8385 | else | |
8386 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8387 | &remote_protocol_packets | |
8388 | [PACKET_qXfer_spu_write]); | |
8389 | } | |
8390 | ||
4aa995e1 PA |
8391 | /* Handle extra signal info using qxfer packets. */ |
8392 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8393 | { | |
8394 | if (readbuf) | |
8395 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8396 | &remote_protocol_packets | |
8397 | [PACKET_qXfer_siginfo_read]); | |
8398 | else | |
3e43a32a MS |
8399 | return remote_write_qxfer (ops, "siginfo", annex, |
8400 | writebuf, offset, len, | |
4aa995e1 PA |
8401 | &remote_protocol_packets |
8402 | [PACKET_qXfer_siginfo_write]); | |
8403 | } | |
8404 | ||
0fb4aa4b PA |
8405 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8406 | { | |
8407 | if (readbuf) | |
3e43a32a MS |
8408 | return remote_read_qxfer (ops, "statictrace", annex, |
8409 | readbuf, offset, len, | |
0fb4aa4b PA |
8410 | &remote_protocol_packets |
8411 | [PACKET_qXfer_statictrace_read]); | |
8412 | else | |
8413 | return -1; | |
8414 | } | |
8415 | ||
a76d924d DJ |
8416 | /* Only handle flash writes. */ |
8417 | if (writebuf != NULL) | |
8418 | { | |
8419 | LONGEST xfered; | |
8420 | ||
8421 | switch (object) | |
8422 | { | |
8423 | case TARGET_OBJECT_FLASH: | |
8424 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8425 | ||
8426 | if (xfered > 0) | |
8427 | return xfered; | |
8428 | else if (xfered == 0 && errno == 0) | |
8429 | return 0; | |
8430 | else | |
8431 | return -1; | |
8432 | ||
8433 | default: | |
8434 | return -1; | |
8435 | } | |
8436 | } | |
4b8a223f | 8437 | |
1e3ff5ad AC |
8438 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8439 | objects!!! Instead specify new query packets. */ | |
8440 | switch (object) | |
c906108c | 8441 | { |
1e3ff5ad AC |
8442 | case TARGET_OBJECT_AVR: |
8443 | query_type = 'R'; | |
8444 | break; | |
802188a7 RM |
8445 | |
8446 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8447 | gdb_assert (annex == NULL); |
8448 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8449 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8450 | |
23181151 DJ |
8451 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8452 | return remote_read_qxfer | |
8453 | (ops, "features", annex, readbuf, offset, len, | |
8454 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8455 | ||
cfa9d6d9 DJ |
8456 | case TARGET_OBJECT_LIBRARIES: |
8457 | return remote_read_qxfer | |
8458 | (ops, "libraries", annex, readbuf, offset, len, | |
8459 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8460 | ||
2268b414 JK |
8461 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8462 | return remote_read_qxfer | |
8463 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8464 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8465 | ||
fd79ecee DJ |
8466 | case TARGET_OBJECT_MEMORY_MAP: |
8467 | gdb_assert (annex == NULL); | |
8468 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8469 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8470 | ||
07e059b5 VP |
8471 | case TARGET_OBJECT_OSDATA: |
8472 | /* Should only get here if we're connected. */ | |
8473 | gdb_assert (remote_desc); | |
8474 | return remote_read_qxfer | |
8475 | (ops, "osdata", annex, readbuf, offset, len, | |
8476 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8477 | ||
dc146f7c VP |
8478 | case TARGET_OBJECT_THREADS: |
8479 | gdb_assert (annex == NULL); | |
8480 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8481 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8482 | ||
b3b9301e PA |
8483 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8484 | gdb_assert (annex == NULL); | |
8485 | return remote_read_qxfer | |
8486 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8487 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8488 | |
8489 | case TARGET_OBJECT_FDPIC: | |
8490 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8491 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
1e3ff5ad | 8492 | default: |
c906108c SS |
8493 | return -1; |
8494 | } | |
8495 | ||
4b8a223f | 8496 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8497 | buffer size. */ |
4b8a223f | 8498 | if (offset == 0 && len == 0) |
ea9c271d | 8499 | return (get_remote_packet_size ()); |
0df8b418 | 8500 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8501 | large enough let the caller deal with it. */ |
ea9c271d | 8502 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8503 | return -1; |
ea9c271d | 8504 | len = get_remote_packet_size (); |
1e3ff5ad | 8505 | |
23860348 | 8506 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8507 | if (!remote_desc) |
8a3fe4f8 | 8508 | error (_("remote query is only available after target open")); |
c906108c | 8509 | |
1e3ff5ad | 8510 | gdb_assert (annex != NULL); |
4b8a223f | 8511 | gdb_assert (readbuf != NULL); |
c906108c | 8512 | |
6d820c5c | 8513 | p2 = rs->buf; |
c906108c SS |
8514 | *p2++ = 'q'; |
8515 | *p2++ = query_type; | |
8516 | ||
23860348 MS |
8517 | /* We used one buffer char for the remote protocol q command and |
8518 | another for the query type. As the remote protocol encapsulation | |
8519 | uses 4 chars plus one extra in case we are debugging | |
8520 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8521 | string. */ | |
c906108c | 8522 | i = 0; |
ea9c271d | 8523 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8524 | { |
1e3ff5ad AC |
8525 | /* Bad caller may have sent forbidden characters. */ |
8526 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8527 | *p2++ = annex[i]; | |
c906108c SS |
8528 | i++; |
8529 | } | |
1e3ff5ad AC |
8530 | *p2 = '\0'; |
8531 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8532 | |
6d820c5c | 8533 | i = putpkt (rs->buf); |
c5aa993b JM |
8534 | if (i < 0) |
8535 | return i; | |
c906108c | 8536 | |
6d820c5c DJ |
8537 | getpkt (&rs->buf, &rs->buf_size, 0); |
8538 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8539 | |
cfd77fa1 | 8540 | return strlen ((char *) readbuf); |
c906108c SS |
8541 | } |
8542 | ||
08388c79 DE |
8543 | static int |
8544 | remote_search_memory (struct target_ops* ops, | |
8545 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8546 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8547 | CORE_ADDR *found_addrp) | |
8548 | { | |
5af949e3 | 8549 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8550 | struct remote_state *rs = get_remote_state (); |
8551 | int max_size = get_memory_write_packet_size (); | |
8552 | struct packet_config *packet = | |
8553 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8554 | /* Number of packet bytes used to encode the pattern; |
8555 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8556 | int escaped_pattern_len; |
0df8b418 | 8557 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8558 | int used_pattern_len; |
8559 | int i; | |
8560 | int found; | |
8561 | ULONGEST found_addr; | |
8562 | ||
8563 | /* Don't go to the target if we don't have to. | |
8564 | This is done before checking packet->support to avoid the possibility that | |
8565 | a success for this edge case means the facility works in general. */ | |
8566 | if (pattern_len > search_space_len) | |
8567 | return 0; | |
8568 | if (pattern_len == 0) | |
8569 | { | |
8570 | *found_addrp = start_addr; | |
8571 | return 1; | |
8572 | } | |
8573 | ||
8574 | /* If we already know the packet isn't supported, fall back to the simple | |
8575 | way of searching memory. */ | |
8576 | ||
8577 | if (packet->support == PACKET_DISABLE) | |
8578 | { | |
8579 | /* Target doesn't provided special support, fall back and use the | |
8580 | standard support (copy memory and do the search here). */ | |
8581 | return simple_search_memory (ops, start_addr, search_space_len, | |
8582 | pattern, pattern_len, found_addrp); | |
8583 | } | |
8584 | ||
8585 | /* Insert header. */ | |
8586 | i = snprintf (rs->buf, max_size, | |
8587 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8588 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8589 | phex_nz (search_space_len, sizeof (search_space_len))); |
8590 | max_size -= (i + 1); | |
8591 | ||
8592 | /* Escape as much data as fits into rs->buf. */ | |
8593 | escaped_pattern_len = | |
8594 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8595 | &used_pattern_len, max_size); | |
8596 | ||
8597 | /* Bail if the pattern is too large. */ | |
8598 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8599 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8600 | |
8601 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8602 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8603 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8604 | { | |
8605 | /* The request may not have worked because the command is not | |
8606 | supported. If so, fall back to the simple way. */ | |
8607 | if (packet->support == PACKET_DISABLE) | |
8608 | { | |
8609 | return simple_search_memory (ops, start_addr, search_space_len, | |
8610 | pattern, pattern_len, found_addrp); | |
8611 | } | |
8612 | return -1; | |
8613 | } | |
8614 | ||
8615 | if (rs->buf[0] == '0') | |
8616 | found = 0; | |
8617 | else if (rs->buf[0] == '1') | |
8618 | { | |
8619 | found = 1; | |
8620 | if (rs->buf[1] != ',') | |
10e0fa18 | 8621 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8622 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8623 | *found_addrp = found_addr; | |
8624 | } | |
8625 | else | |
10e0fa18 | 8626 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8627 | |
8628 | return found; | |
8629 | } | |
8630 | ||
96baa820 JM |
8631 | static void |
8632 | remote_rcmd (char *command, | |
d9fcf2fb | 8633 | struct ui_file *outbuf) |
96baa820 | 8634 | { |
d01949b6 | 8635 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8636 | char *p = rs->buf; |
96baa820 JM |
8637 | |
8638 | if (!remote_desc) | |
8a3fe4f8 | 8639 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8640 | |
23860348 | 8641 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8642 | if (command == NULL) |
8643 | command = ""; | |
8644 | ||
23860348 | 8645 | /* The query prefix. */ |
2e9f7625 DJ |
8646 | strcpy (rs->buf, "qRcmd,"); |
8647 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8648 | |
3e43a32a MS |
8649 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8650 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8651 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8652 | |
23860348 | 8653 | /* Encode the actual command. */ |
cfd77fa1 | 8654 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8655 | |
6d820c5c | 8656 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8657 | error (_("Communication problem with target.")); |
96baa820 JM |
8658 | |
8659 | /* get/display the response */ | |
8660 | while (1) | |
8661 | { | |
2e9f7625 DJ |
8662 | char *buf; |
8663 | ||
00bf0b85 | 8664 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8665 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 8666 | rs->buf[0] = '\0'; |
5b37825d PW |
8667 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
8668 | { | |
8669 | /* Timeout. Continue to (try to) read responses. | |
8670 | This is better than stopping with an error, assuming the stub | |
8671 | is still executing the (long) monitor command. | |
8672 | If needed, the user can interrupt gdb using C-c, obtaining | |
8673 | an effect similar to stop on timeout. */ | |
8674 | continue; | |
8675 | } | |
2e9f7625 | 8676 | buf = rs->buf; |
96baa820 | 8677 | if (buf[0] == '\0') |
8a3fe4f8 | 8678 | error (_("Target does not support this command.")); |
96baa820 JM |
8679 | if (buf[0] == 'O' && buf[1] != 'K') |
8680 | { | |
23860348 | 8681 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8682 | continue; |
8683 | } | |
8684 | if (strcmp (buf, "OK") == 0) | |
8685 | break; | |
7be570e7 JM |
8686 | if (strlen (buf) == 3 && buf[0] == 'E' |
8687 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8688 | { | |
8a3fe4f8 | 8689 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8690 | } |
96baa820 JM |
8691 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8692 | { | |
8693 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8694 | |
96baa820 JM |
8695 | fputc_unfiltered (c, outbuf); |
8696 | } | |
8697 | break; | |
8698 | } | |
8699 | } | |
8700 | ||
fd79ecee DJ |
8701 | static VEC(mem_region_s) * |
8702 | remote_memory_map (struct target_ops *ops) | |
8703 | { | |
8704 | VEC(mem_region_s) *result = NULL; | |
8705 | char *text = target_read_stralloc (¤t_target, | |
8706 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8707 | ||
8708 | if (text) | |
8709 | { | |
8710 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8711 | |
fd79ecee DJ |
8712 | result = parse_memory_map (text); |
8713 | do_cleanups (back_to); | |
8714 | } | |
8715 | ||
8716 | return result; | |
8717 | } | |
8718 | ||
c906108c | 8719 | static void |
fba45db2 | 8720 | packet_command (char *args, int from_tty) |
c906108c | 8721 | { |
d01949b6 | 8722 | struct remote_state *rs = get_remote_state (); |
c906108c | 8723 | |
c5aa993b | 8724 | if (!remote_desc) |
8a3fe4f8 | 8725 | error (_("command can only be used with remote target")); |
c906108c | 8726 | |
c5aa993b | 8727 | if (!args) |
8a3fe4f8 | 8728 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8729 | |
8730 | puts_filtered ("sending: "); | |
8731 | print_packet (args); | |
8732 | puts_filtered ("\n"); | |
8733 | putpkt (args); | |
8734 | ||
6d820c5c | 8735 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8736 | puts_filtered ("received: "); |
6d820c5c | 8737 | print_packet (rs->buf); |
c906108c SS |
8738 | puts_filtered ("\n"); |
8739 | } | |
8740 | ||
8741 | #if 0 | |
23860348 | 8742 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8743 | |
a14ed312 | 8744 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8745 | |
a14ed312 | 8746 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8747 | |
a14ed312 | 8748 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8749 | |
a14ed312 | 8750 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8751 | |
23860348 | 8752 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8753 | |
a14ed312 | 8754 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8755 | |
23860348 | 8756 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8757 | |
a14ed312 | 8758 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8759 | |
a14ed312 | 8760 | static void init_remote_threadtests (void); |
c906108c | 8761 | |
23860348 | 8762 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8763 | |
8764 | static void | |
fba45db2 | 8765 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8766 | { |
8767 | int sample_thread = SAMPLE_THREAD; | |
8768 | ||
a3f17187 | 8769 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8770 | set_general_thread (sample_thread); |
c906108c SS |
8771 | } |
8772 | ||
8773 | ||
8774 | static void | |
fba45db2 | 8775 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8776 | { |
8777 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8778 | int pid = ptid_get_pid (inferior_ptid); |
8779 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8780 | |
79d7f229 | 8781 | if (remote_thread_alive (ptid)) |
c906108c SS |
8782 | printf_filtered ("PASS: Thread alive test\n"); |
8783 | else | |
8784 | printf_filtered ("FAIL: Thread alive test\n"); | |
8785 | } | |
8786 | ||
23860348 | 8787 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8788 | |
8789 | void | |
fba45db2 | 8790 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8791 | { |
8792 | char hexid[20]; | |
8793 | ||
23860348 | 8794 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8795 | hexid[16] = 0; |
8796 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8797 | } | |
8798 | ||
8799 | static void | |
fba45db2 | 8800 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8801 | { |
8802 | int startflag = 1; | |
8803 | threadref nextthread; | |
8804 | int done, result_count; | |
8805 | threadref threadlist[3]; | |
8806 | ||
8807 | printf_filtered ("Remote Threadlist test\n"); | |
8808 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8809 | &result_count, &threadlist[0])) | |
8810 | printf_filtered ("FAIL: threadlist test\n"); | |
8811 | else | |
8812 | { | |
8813 | threadref *scan = threadlist; | |
8814 | threadref *limit = scan + result_count; | |
8815 | ||
8816 | while (scan < limit) | |
8817 | output_threadid (" thread ", scan++); | |
8818 | } | |
8819 | } | |
8820 | ||
8821 | void | |
fba45db2 | 8822 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8823 | { |
8824 | output_threadid ("Threadid: ", &info->threadid); | |
8825 | printf_filtered ("Name: %s\n ", info->shortname); | |
8826 | printf_filtered ("State: %s\n", info->display); | |
8827 | printf_filtered ("other: %s\n\n", info->more_display); | |
8828 | } | |
8829 | ||
8830 | int | |
fba45db2 | 8831 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8832 | { |
8833 | int result; | |
8834 | int set; | |
8835 | struct gdb_ext_thread_info threadinfo; | |
8836 | ||
8837 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8838 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8839 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8840 | display_thread_info (&threadinfo); | |
8841 | return result; | |
8842 | } | |
8843 | ||
8844 | static void | |
fba45db2 | 8845 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8846 | { |
8847 | int athread = SAMPLE_THREAD; | |
8848 | threadref thread; | |
8849 | int set; | |
8850 | ||
8851 | int_to_threadref (&thread, athread); | |
8852 | printf_filtered ("Remote Threadinfo test\n"); | |
8853 | if (!get_and_display_threadinfo (&thread)) | |
8854 | printf_filtered ("FAIL cannot get thread info\n"); | |
8855 | } | |
8856 | ||
8857 | static int | |
fba45db2 | 8858 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8859 | { |
8860 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8861 | return get_and_display_threadinfo (ref); | |
8862 | } | |
8863 | ||
8864 | static void | |
fba45db2 | 8865 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8866 | { |
8867 | printf_filtered ("Remote Threadlist update test\n"); | |
8868 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8869 | } | |
8870 | ||
8871 | static void | |
8872 | init_remote_threadtests (void) | |
8873 | { | |
3e43a32a MS |
8874 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8875 | _("Fetch and print the remote list of " | |
8876 | "thread identifiers, one pkt only")); | |
c906108c | 8877 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8878 | _("Fetch and display info about one thread")); |
c906108c | 8879 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8880 | _("Test setting to a different thread")); |
c906108c | 8881 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8882 | _("Iterate through updating all remote thread info")); |
c906108c | 8883 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8884 | _(" Remote thread alive test ")); |
c906108c SS |
8885 | } |
8886 | ||
8887 | #endif /* 0 */ | |
8888 | ||
f3fb8c85 MS |
8889 | /* Convert a thread ID to a string. Returns the string in a static |
8890 | buffer. */ | |
8891 | ||
8892 | static char * | |
117de6a9 | 8893 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8894 | { |
79d7f229 | 8895 | static char buf[64]; |
82f73884 | 8896 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8897 | |
7cee1e54 PA |
8898 | if (ptid_equal (ptid, null_ptid)) |
8899 | return normal_pid_to_str (ptid); | |
8900 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
8901 | { |
8902 | /* Printing an inferior target id. */ | |
8903 | ||
8904 | /* When multi-process extensions are off, there's no way in the | |
8905 | remote protocol to know the remote process id, if there's any | |
8906 | at all. There's one exception --- when we're connected with | |
8907 | target extended-remote, and we manually attached to a process | |
8908 | with "attach PID". We don't record anywhere a flag that | |
8909 | allows us to distinguish that case from the case of | |
8910 | connecting with extended-remote and the stub already being | |
8911 | attached to a process, and reporting yes to qAttached, hence | |
8912 | no smart special casing here. */ | |
8913 | if (!remote_multi_process_p (rs)) | |
8914 | { | |
8915 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8916 | return buf; | |
8917 | } | |
8918 | ||
8919 | return normal_pid_to_str (ptid); | |
82f73884 | 8920 | } |
ecd0ada5 | 8921 | else |
79d7f229 | 8922 | { |
ecd0ada5 PA |
8923 | if (ptid_equal (magic_null_ptid, ptid)) |
8924 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 8925 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
8926 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
8927 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8928 | else | |
8929 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8930 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8931 | return buf; |
8932 | } | |
f3fb8c85 MS |
8933 | } |
8934 | ||
38691318 KB |
8935 | /* Get the address of the thread local variable in OBJFILE which is |
8936 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8937 | ||
8938 | static CORE_ADDR | |
117de6a9 PA |
8939 | remote_get_thread_local_address (struct target_ops *ops, |
8940 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8941 | { |
444abaca | 8942 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8943 | { |
8944 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8945 | char *p = rs->buf; |
82f73884 | 8946 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8947 | enum packet_result result; |
38691318 KB |
8948 | |
8949 | strcpy (p, "qGetTLSAddr:"); | |
8950 | p += strlen (p); | |
82f73884 | 8951 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8952 | *p++ = ','; |
8953 | p += hexnumstr (p, offset); | |
8954 | *p++ = ','; | |
8955 | p += hexnumstr (p, lm); | |
8956 | *p++ = '\0'; | |
8957 | ||
6d820c5c DJ |
8958 | putpkt (rs->buf); |
8959 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8960 | result = packet_ok (rs->buf, |
8961 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8962 | if (result == PACKET_OK) |
38691318 KB |
8963 | { |
8964 | ULONGEST result; | |
8965 | ||
6d820c5c | 8966 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8967 | return result; |
8968 | } | |
571dd617 | 8969 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8970 | throw_error (TLS_GENERIC_ERROR, |
8971 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8972 | else |
109c3e39 AC |
8973 | throw_error (TLS_GENERIC_ERROR, |
8974 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8975 | } |
8976 | else | |
109c3e39 AC |
8977 | throw_error (TLS_GENERIC_ERROR, |
8978 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8979 | /* Not reached. */ |
8980 | return 0; | |
8981 | } | |
8982 | ||
711e434b PM |
8983 | /* Provide thread local base, i.e. Thread Information Block address. |
8984 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8985 | ||
8986 | int | |
8987 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
8988 | { | |
8989 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8990 | { | |
8991 | struct remote_state *rs = get_remote_state (); | |
8992 | char *p = rs->buf; | |
8993 | char *endp = rs->buf + get_remote_packet_size (); | |
8994 | enum packet_result result; | |
8995 | ||
8996 | strcpy (p, "qGetTIBAddr:"); | |
8997 | p += strlen (p); | |
8998 | p = write_ptid (p, endp, ptid); | |
8999 | *p++ = '\0'; | |
9000 | ||
9001 | putpkt (rs->buf); | |
9002 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9003 | result = packet_ok (rs->buf, | |
9004 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9005 | if (result == PACKET_OK) | |
9006 | { | |
9007 | ULONGEST result; | |
9008 | ||
9009 | unpack_varlen_hex (rs->buf, &result); | |
9010 | if (addr) | |
9011 | *addr = (CORE_ADDR) result; | |
9012 | return 1; | |
9013 | } | |
9014 | else if (result == PACKET_UNKNOWN) | |
9015 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9016 | else | |
9017 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9018 | } | |
9019 | else | |
9020 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9021 | /* Not reached. */ | |
9022 | return 0; | |
9023 | } | |
9024 | ||
29709017 DJ |
9025 | /* Support for inferring a target description based on the current |
9026 | architecture and the size of a 'g' packet. While the 'g' packet | |
9027 | can have any size (since optional registers can be left off the | |
9028 | end), some sizes are easily recognizable given knowledge of the | |
9029 | approximate architecture. */ | |
9030 | ||
9031 | struct remote_g_packet_guess | |
9032 | { | |
9033 | int bytes; | |
9034 | const struct target_desc *tdesc; | |
9035 | }; | |
9036 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9037 | DEF_VEC_O(remote_g_packet_guess_s); | |
9038 | ||
9039 | struct remote_g_packet_data | |
9040 | { | |
9041 | VEC(remote_g_packet_guess_s) *guesses; | |
9042 | }; | |
9043 | ||
9044 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9045 | ||
9046 | static void * | |
9047 | remote_g_packet_data_init (struct obstack *obstack) | |
9048 | { | |
9049 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9050 | } | |
9051 | ||
9052 | void | |
9053 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9054 | const struct target_desc *tdesc) | |
9055 | { | |
9056 | struct remote_g_packet_data *data | |
9057 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9058 | struct remote_g_packet_guess new_guess, *guess; | |
9059 | int ix; | |
9060 | ||
9061 | gdb_assert (tdesc != NULL); | |
9062 | ||
9063 | for (ix = 0; | |
9064 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9065 | ix++) | |
9066 | if (guess->bytes == bytes) | |
9067 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9068 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9069 | bytes); |
9070 | ||
9071 | new_guess.bytes = bytes; | |
9072 | new_guess.tdesc = tdesc; | |
9073 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9074 | } | |
9075 | ||
d962ef82 DJ |
9076 | /* Return 1 if remote_read_description would do anything on this target |
9077 | and architecture, 0 otherwise. */ | |
9078 | ||
9079 | static int | |
9080 | remote_read_description_p (struct target_ops *target) | |
9081 | { | |
9082 | struct remote_g_packet_data *data | |
9083 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
9084 | ||
9085 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9086 | return 1; | |
9087 | ||
9088 | return 0; | |
9089 | } | |
9090 | ||
29709017 DJ |
9091 | static const struct target_desc * |
9092 | remote_read_description (struct target_ops *target) | |
9093 | { | |
9094 | struct remote_g_packet_data *data | |
1cf3db46 | 9095 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 9096 | |
d962ef82 DJ |
9097 | /* Do not try this during initial connection, when we do not know |
9098 | whether there is a running but stopped thread. */ | |
9099 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9100 | return NULL; | |
9101 | ||
29709017 DJ |
9102 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9103 | { | |
9104 | struct remote_g_packet_guess *guess; | |
9105 | int ix; | |
9106 | int bytes = send_g_packet (); | |
9107 | ||
9108 | for (ix = 0; | |
9109 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9110 | ix++) | |
9111 | if (guess->bytes == bytes) | |
9112 | return guess->tdesc; | |
9113 | ||
9114 | /* We discard the g packet. A minor optimization would be to | |
9115 | hold on to it, and fill the register cache once we have selected | |
9116 | an architecture, but it's too tricky to do safely. */ | |
9117 | } | |
9118 | ||
9119 | return NULL; | |
9120 | } | |
9121 | ||
a6b151f1 DJ |
9122 | /* Remote file transfer support. This is host-initiated I/O, not |
9123 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9124 | ||
9125 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9126 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9127 | decrease *LEFT. Otherwise raise an error. */ | |
9128 | ||
9129 | static void | |
9130 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9131 | { | |
9132 | int len = strlen (string); | |
9133 | ||
9134 | if (len > *left) | |
9135 | error (_("Packet too long for target.")); | |
9136 | ||
9137 | memcpy (*buffer, string, len); | |
9138 | *buffer += len; | |
9139 | *left -= len; | |
9140 | ||
9141 | /* NUL-terminate the buffer as a convenience, if there is | |
9142 | room. */ | |
9143 | if (*left) | |
9144 | **buffer = '\0'; | |
9145 | } | |
9146 | ||
9147 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9148 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9149 | decrease *LEFT. Otherwise raise an error. */ | |
9150 | ||
9151 | static void | |
9152 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9153 | int len) | |
9154 | { | |
9155 | if (2 * len > *left) | |
9156 | error (_("Packet too long for target.")); | |
9157 | ||
9158 | bin2hex (bytes, *buffer, len); | |
9159 | *buffer += 2 * len; | |
9160 | *left -= 2 * len; | |
9161 | ||
9162 | /* NUL-terminate the buffer as a convenience, if there is | |
9163 | room. */ | |
9164 | if (*left) | |
9165 | **buffer = '\0'; | |
9166 | } | |
9167 | ||
9168 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9169 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9170 | decrease *LEFT. Otherwise raise an error. */ | |
9171 | ||
9172 | static void | |
9173 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9174 | { | |
9175 | int len = hexnumlen (value); | |
9176 | ||
9177 | if (len > *left) | |
9178 | error (_("Packet too long for target.")); | |
9179 | ||
9180 | hexnumstr (*buffer, value); | |
9181 | *buffer += len; | |
9182 | *left -= len; | |
9183 | ||
9184 | /* NUL-terminate the buffer as a convenience, if there is | |
9185 | room. */ | |
9186 | if (*left) | |
9187 | **buffer = '\0'; | |
9188 | } | |
9189 | ||
9190 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9191 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9192 | was included, and *ATTACHMENT to point to the start of the annex | |
9193 | if any. The length of the packet isn't needed here; there may | |
9194 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9195 | ||
9196 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9197 | -1 is returned, the other variables may not be initialized. */ | |
9198 | ||
9199 | static int | |
9200 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9201 | int *remote_errno, char **attachment) | |
9202 | { | |
9203 | char *p, *p2; | |
9204 | ||
9205 | *remote_errno = 0; | |
9206 | *attachment = NULL; | |
9207 | ||
9208 | if (buffer[0] != 'F') | |
9209 | return -1; | |
9210 | ||
9211 | errno = 0; | |
9212 | *retcode = strtol (&buffer[1], &p, 16); | |
9213 | if (errno != 0 || p == &buffer[1]) | |
9214 | return -1; | |
9215 | ||
9216 | /* Check for ",errno". */ | |
9217 | if (*p == ',') | |
9218 | { | |
9219 | errno = 0; | |
9220 | *remote_errno = strtol (p + 1, &p2, 16); | |
9221 | if (errno != 0 || p + 1 == p2) | |
9222 | return -1; | |
9223 | p = p2; | |
9224 | } | |
9225 | ||
9226 | /* Check for ";attachment". If there is no attachment, the | |
9227 | packet should end here. */ | |
9228 | if (*p == ';') | |
9229 | { | |
9230 | *attachment = p + 1; | |
9231 | return 0; | |
9232 | } | |
9233 | else if (*p == '\0') | |
9234 | return 0; | |
9235 | else | |
9236 | return -1; | |
9237 | } | |
9238 | ||
9239 | /* Send a prepared I/O packet to the target and read its response. | |
9240 | The prepared packet is in the global RS->BUF before this function | |
9241 | is called, and the answer is there when we return. | |
9242 | ||
9243 | COMMAND_BYTES is the length of the request to send, which may include | |
9244 | binary data. WHICH_PACKET is the packet configuration to check | |
9245 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9246 | is set to the error number and -1 is returned. Otherwise the value | |
9247 | returned by the function is returned. | |
9248 | ||
9249 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9250 | attachment is expected; an error will be reported if there's a | |
9251 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9252 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9253 | attachment's length. */ | |
9254 | ||
9255 | static int | |
9256 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9257 | int *remote_errno, char **attachment, | |
9258 | int *attachment_len) | |
9259 | { | |
9260 | struct remote_state *rs = get_remote_state (); | |
9261 | int ret, bytes_read; | |
9262 | char *attachment_tmp; | |
9263 | ||
f1838a98 UW |
9264 | if (!remote_desc |
9265 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9266 | { |
9267 | *remote_errno = FILEIO_ENOSYS; | |
9268 | return -1; | |
9269 | } | |
9270 | ||
9271 | putpkt_binary (rs->buf, command_bytes); | |
9272 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9273 | ||
9274 | /* If it timed out, something is wrong. Don't try to parse the | |
9275 | buffer. */ | |
9276 | if (bytes_read < 0) | |
9277 | { | |
9278 | *remote_errno = FILEIO_EINVAL; | |
9279 | return -1; | |
9280 | } | |
9281 | ||
9282 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9283 | { | |
9284 | case PACKET_ERROR: | |
9285 | *remote_errno = FILEIO_EINVAL; | |
9286 | return -1; | |
9287 | case PACKET_UNKNOWN: | |
9288 | *remote_errno = FILEIO_ENOSYS; | |
9289 | return -1; | |
9290 | case PACKET_OK: | |
9291 | break; | |
9292 | } | |
9293 | ||
9294 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9295 | &attachment_tmp)) | |
9296 | { | |
9297 | *remote_errno = FILEIO_EINVAL; | |
9298 | return -1; | |
9299 | } | |
9300 | ||
9301 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9302 | if ((attachment_tmp == NULL && attachment != NULL) | |
9303 | || (attachment_tmp != NULL && attachment == NULL)) | |
9304 | { | |
9305 | *remote_errno = FILEIO_EINVAL; | |
9306 | return -1; | |
9307 | } | |
9308 | ||
9309 | /* If an attachment was found, it must point into the packet buffer; | |
9310 | work out how many bytes there were. */ | |
9311 | if (attachment_tmp != NULL) | |
9312 | { | |
9313 | *attachment = attachment_tmp; | |
9314 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9315 | } | |
9316 | ||
9317 | return ret; | |
9318 | } | |
9319 | ||
9320 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9321 | remote file descriptor, or -1 if an error occurs (and set | |
9322 | *REMOTE_ERRNO). */ | |
9323 | ||
9324 | static int | |
9325 | remote_hostio_open (const char *filename, int flags, int mode, | |
9326 | int *remote_errno) | |
9327 | { | |
9328 | struct remote_state *rs = get_remote_state (); | |
9329 | char *p = rs->buf; | |
9330 | int left = get_remote_packet_size () - 1; | |
9331 | ||
9332 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9333 | ||
9334 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9335 | strlen (filename)); | |
9336 | remote_buffer_add_string (&p, &left, ","); | |
9337 | ||
9338 | remote_buffer_add_int (&p, &left, flags); | |
9339 | remote_buffer_add_string (&p, &left, ","); | |
9340 | ||
9341 | remote_buffer_add_int (&p, &left, mode); | |
9342 | ||
9343 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9344 | remote_errno, NULL, NULL); | |
9345 | } | |
9346 | ||
9347 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9348 | Return the number of bytes written, or -1 if an error occurs (and | |
9349 | set *REMOTE_ERRNO). */ | |
9350 | ||
9351 | static int | |
9352 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9353 | ULONGEST offset, int *remote_errno) | |
9354 | { | |
9355 | struct remote_state *rs = get_remote_state (); | |
9356 | char *p = rs->buf; | |
9357 | int left = get_remote_packet_size (); | |
9358 | int out_len; | |
9359 | ||
9360 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9361 | ||
9362 | remote_buffer_add_int (&p, &left, fd); | |
9363 | remote_buffer_add_string (&p, &left, ","); | |
9364 | ||
9365 | remote_buffer_add_int (&p, &left, offset); | |
9366 | remote_buffer_add_string (&p, &left, ","); | |
9367 | ||
9368 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9369 | get_remote_packet_size () - (p - rs->buf)); | |
9370 | ||
9371 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9372 | remote_errno, NULL, NULL); | |
9373 | } | |
9374 | ||
9375 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9376 | Return the number of bytes read, or -1 if an error occurs (and | |
9377 | set *REMOTE_ERRNO). */ | |
9378 | ||
9379 | static int | |
9380 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9381 | ULONGEST offset, int *remote_errno) | |
9382 | { | |
9383 | struct remote_state *rs = get_remote_state (); | |
9384 | char *p = rs->buf; | |
9385 | char *attachment; | |
9386 | int left = get_remote_packet_size (); | |
9387 | int ret, attachment_len; | |
9388 | int read_len; | |
9389 | ||
9390 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9391 | ||
9392 | remote_buffer_add_int (&p, &left, fd); | |
9393 | remote_buffer_add_string (&p, &left, ","); | |
9394 | ||
9395 | remote_buffer_add_int (&p, &left, len); | |
9396 | remote_buffer_add_string (&p, &left, ","); | |
9397 | ||
9398 | remote_buffer_add_int (&p, &left, offset); | |
9399 | ||
9400 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9401 | remote_errno, &attachment, | |
9402 | &attachment_len); | |
9403 | ||
9404 | if (ret < 0) | |
9405 | return ret; | |
9406 | ||
9407 | read_len = remote_unescape_input (attachment, attachment_len, | |
9408 | read_buf, len); | |
9409 | if (read_len != ret) | |
9410 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9411 | ||
9412 | return ret; | |
9413 | } | |
9414 | ||
9415 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9416 | (and set *REMOTE_ERRNO). */ | |
9417 | ||
9418 | static int | |
9419 | remote_hostio_close (int fd, int *remote_errno) | |
9420 | { | |
9421 | struct remote_state *rs = get_remote_state (); | |
9422 | char *p = rs->buf; | |
9423 | int left = get_remote_packet_size () - 1; | |
9424 | ||
9425 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9426 | ||
9427 | remote_buffer_add_int (&p, &left, fd); | |
9428 | ||
9429 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9430 | remote_errno, NULL, NULL); | |
9431 | } | |
9432 | ||
9433 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9434 | occurs (and set *REMOTE_ERRNO). */ | |
9435 | ||
9436 | static int | |
9437 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9438 | { | |
9439 | struct remote_state *rs = get_remote_state (); | |
9440 | char *p = rs->buf; | |
9441 | int left = get_remote_packet_size () - 1; | |
9442 | ||
9443 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9444 | ||
9445 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9446 | strlen (filename)); | |
9447 | ||
9448 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9449 | remote_errno, NULL, NULL); | |
9450 | } | |
9451 | ||
b9e7b9c3 UW |
9452 | /* Read value of symbolic link FILENAME on the remote target. Return |
9453 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9454 | occurs (and set *REMOTE_ERRNO). */ | |
9455 | ||
9456 | static char * | |
9457 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9458 | { | |
9459 | struct remote_state *rs = get_remote_state (); | |
9460 | char *p = rs->buf; | |
9461 | char *attachment; | |
9462 | int left = get_remote_packet_size (); | |
9463 | int len, attachment_len; | |
9464 | int read_len; | |
9465 | char *ret; | |
9466 | ||
9467 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9468 | ||
9469 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9470 | strlen (filename)); | |
9471 | ||
9472 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9473 | remote_errno, &attachment, | |
9474 | &attachment_len); | |
9475 | ||
9476 | if (len < 0) | |
9477 | return NULL; | |
9478 | ||
9479 | ret = xmalloc (len + 1); | |
9480 | ||
9481 | read_len = remote_unescape_input (attachment, attachment_len, | |
9482 | ret, len); | |
9483 | if (read_len != len) | |
9484 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9485 | ||
9486 | ret[len] = '\0'; | |
9487 | return ret; | |
9488 | } | |
9489 | ||
a6b151f1 DJ |
9490 | static int |
9491 | remote_fileio_errno_to_host (int errnum) | |
9492 | { | |
9493 | switch (errnum) | |
9494 | { | |
9495 | case FILEIO_EPERM: | |
9496 | return EPERM; | |
9497 | case FILEIO_ENOENT: | |
9498 | return ENOENT; | |
9499 | case FILEIO_EINTR: | |
9500 | return EINTR; | |
9501 | case FILEIO_EIO: | |
9502 | return EIO; | |
9503 | case FILEIO_EBADF: | |
9504 | return EBADF; | |
9505 | case FILEIO_EACCES: | |
9506 | return EACCES; | |
9507 | case FILEIO_EFAULT: | |
9508 | return EFAULT; | |
9509 | case FILEIO_EBUSY: | |
9510 | return EBUSY; | |
9511 | case FILEIO_EEXIST: | |
9512 | return EEXIST; | |
9513 | case FILEIO_ENODEV: | |
9514 | return ENODEV; | |
9515 | case FILEIO_ENOTDIR: | |
9516 | return ENOTDIR; | |
9517 | case FILEIO_EISDIR: | |
9518 | return EISDIR; | |
9519 | case FILEIO_EINVAL: | |
9520 | return EINVAL; | |
9521 | case FILEIO_ENFILE: | |
9522 | return ENFILE; | |
9523 | case FILEIO_EMFILE: | |
9524 | return EMFILE; | |
9525 | case FILEIO_EFBIG: | |
9526 | return EFBIG; | |
9527 | case FILEIO_ENOSPC: | |
9528 | return ENOSPC; | |
9529 | case FILEIO_ESPIPE: | |
9530 | return ESPIPE; | |
9531 | case FILEIO_EROFS: | |
9532 | return EROFS; | |
9533 | case FILEIO_ENOSYS: | |
9534 | return ENOSYS; | |
9535 | case FILEIO_ENAMETOOLONG: | |
9536 | return ENAMETOOLONG; | |
9537 | } | |
9538 | return -1; | |
9539 | } | |
9540 | ||
9541 | static char * | |
9542 | remote_hostio_error (int errnum) | |
9543 | { | |
9544 | int host_error = remote_fileio_errno_to_host (errnum); | |
9545 | ||
9546 | if (host_error == -1) | |
9547 | error (_("Unknown remote I/O error %d"), errnum); | |
9548 | else | |
9549 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9550 | } | |
9551 | ||
a6b151f1 DJ |
9552 | static void |
9553 | remote_hostio_close_cleanup (void *opaque) | |
9554 | { | |
9555 | int fd = *(int *) opaque; | |
9556 | int remote_errno; | |
9557 | ||
9558 | remote_hostio_close (fd, &remote_errno); | |
9559 | } | |
9560 | ||
f1838a98 UW |
9561 | |
9562 | static void * | |
9563 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9564 | { | |
9565 | const char *filename = bfd_get_filename (abfd); | |
9566 | int fd, remote_errno; | |
9567 | int *stream; | |
9568 | ||
9569 | gdb_assert (remote_filename_p (filename)); | |
9570 | ||
9571 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9572 | if (fd == -1) | |
9573 | { | |
9574 | errno = remote_fileio_errno_to_host (remote_errno); | |
9575 | bfd_set_error (bfd_error_system_call); | |
9576 | return NULL; | |
9577 | } | |
9578 | ||
9579 | stream = xmalloc (sizeof (int)); | |
9580 | *stream = fd; | |
9581 | return stream; | |
9582 | } | |
9583 | ||
9584 | static int | |
9585 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9586 | { | |
9587 | int fd = *(int *)stream; | |
9588 | int remote_errno; | |
9589 | ||
9590 | xfree (stream); | |
9591 | ||
9592 | /* Ignore errors on close; these may happen if the remote | |
9593 | connection was already torn down. */ | |
9594 | remote_hostio_close (fd, &remote_errno); | |
9595 | ||
9596 | return 1; | |
9597 | } | |
9598 | ||
9599 | static file_ptr | |
9600 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9601 | file_ptr nbytes, file_ptr offset) | |
9602 | { | |
9603 | int fd = *(int *)stream; | |
9604 | int remote_errno; | |
9605 | file_ptr pos, bytes; | |
9606 | ||
9607 | pos = 0; | |
9608 | while (nbytes > pos) | |
9609 | { | |
9610 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9611 | offset + pos, &remote_errno); | |
9612 | if (bytes == 0) | |
9613 | /* Success, but no bytes, means end-of-file. */ | |
9614 | break; | |
9615 | if (bytes == -1) | |
9616 | { | |
9617 | errno = remote_fileio_errno_to_host (remote_errno); | |
9618 | bfd_set_error (bfd_error_system_call); | |
9619 | return -1; | |
9620 | } | |
9621 | ||
9622 | pos += bytes; | |
9623 | } | |
9624 | ||
9625 | return pos; | |
9626 | } | |
9627 | ||
9628 | static int | |
9629 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9630 | { | |
9631 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9632 | sb->st_size = INT_MAX; | |
9633 | return 0; | |
9634 | } | |
9635 | ||
9636 | int | |
9637 | remote_filename_p (const char *filename) | |
9638 | { | |
9639 | return strncmp (filename, "remote:", 7) == 0; | |
9640 | } | |
9641 | ||
9642 | bfd * | |
9643 | remote_bfd_open (const char *remote_file, const char *target) | |
9644 | { | |
9645 | return bfd_openr_iovec (remote_file, target, | |
9646 | remote_bfd_iovec_open, NULL, | |
9647 | remote_bfd_iovec_pread, | |
9648 | remote_bfd_iovec_close, | |
9649 | remote_bfd_iovec_stat); | |
9650 | } | |
9651 | ||
a6b151f1 DJ |
9652 | void |
9653 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9654 | { | |
9655 | struct cleanup *back_to, *close_cleanup; | |
9656 | int retcode, fd, remote_errno, bytes, io_size; | |
9657 | FILE *file; | |
9658 | gdb_byte *buffer; | |
9659 | int bytes_in_buffer; | |
9660 | int saw_eof; | |
9661 | ULONGEST offset; | |
9662 | ||
9663 | if (!remote_desc) | |
9664 | error (_("command can only be used with remote target")); | |
9665 | ||
9666 | file = fopen (local_file, "rb"); | |
9667 | if (file == NULL) | |
9668 | perror_with_name (local_file); | |
7c8a8b04 | 9669 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9670 | |
9671 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9672 | | FILEIO_O_TRUNC), | |
9673 | 0700, &remote_errno); | |
9674 | if (fd == -1) | |
9675 | remote_hostio_error (remote_errno); | |
9676 | ||
9677 | /* Send up to this many bytes at once. They won't all fit in the | |
9678 | remote packet limit, so we'll transfer slightly fewer. */ | |
9679 | io_size = get_remote_packet_size (); | |
9680 | buffer = xmalloc (io_size); | |
9681 | make_cleanup (xfree, buffer); | |
9682 | ||
9683 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9684 | ||
9685 | bytes_in_buffer = 0; | |
9686 | saw_eof = 0; | |
9687 | offset = 0; | |
9688 | while (bytes_in_buffer || !saw_eof) | |
9689 | { | |
9690 | if (!saw_eof) | |
9691 | { | |
3e43a32a MS |
9692 | bytes = fread (buffer + bytes_in_buffer, 1, |
9693 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9694 | file); |
9695 | if (bytes == 0) | |
9696 | { | |
9697 | if (ferror (file)) | |
9698 | error (_("Error reading %s."), local_file); | |
9699 | else | |
9700 | { | |
9701 | /* EOF. Unless there is something still in the | |
9702 | buffer from the last iteration, we are done. */ | |
9703 | saw_eof = 1; | |
9704 | if (bytes_in_buffer == 0) | |
9705 | break; | |
9706 | } | |
9707 | } | |
9708 | } | |
9709 | else | |
9710 | bytes = 0; | |
9711 | ||
9712 | bytes += bytes_in_buffer; | |
9713 | bytes_in_buffer = 0; | |
9714 | ||
3e43a32a MS |
9715 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9716 | offset, &remote_errno); | |
a6b151f1 DJ |
9717 | |
9718 | if (retcode < 0) | |
9719 | remote_hostio_error (remote_errno); | |
9720 | else if (retcode == 0) | |
9721 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9722 | else if (retcode < bytes) | |
9723 | { | |
9724 | /* Short write. Save the rest of the read data for the next | |
9725 | write. */ | |
9726 | bytes_in_buffer = bytes - retcode; | |
9727 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9728 | } | |
9729 | ||
9730 | offset += retcode; | |
9731 | } | |
9732 | ||
9733 | discard_cleanups (close_cleanup); | |
9734 | if (remote_hostio_close (fd, &remote_errno)) | |
9735 | remote_hostio_error (remote_errno); | |
9736 | ||
9737 | if (from_tty) | |
9738 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9739 | do_cleanups (back_to); | |
9740 | } | |
9741 | ||
9742 | void | |
9743 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9744 | { | |
9745 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9746 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9747 | FILE *file; |
9748 | gdb_byte *buffer; | |
9749 | ULONGEST offset; | |
9750 | ||
9751 | if (!remote_desc) | |
9752 | error (_("command can only be used with remote target")); | |
9753 | ||
9754 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9755 | if (fd == -1) | |
9756 | remote_hostio_error (remote_errno); | |
9757 | ||
9758 | file = fopen (local_file, "wb"); | |
9759 | if (file == NULL) | |
9760 | perror_with_name (local_file); | |
7c8a8b04 | 9761 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9762 | |
9763 | /* Send up to this many bytes at once. They won't all fit in the | |
9764 | remote packet limit, so we'll transfer slightly fewer. */ | |
9765 | io_size = get_remote_packet_size (); | |
9766 | buffer = xmalloc (io_size); | |
9767 | make_cleanup (xfree, buffer); | |
9768 | ||
9769 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9770 | ||
9771 | offset = 0; | |
9772 | while (1) | |
9773 | { | |
9774 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9775 | if (bytes == 0) | |
9776 | /* Success, but no bytes, means end-of-file. */ | |
9777 | break; | |
9778 | if (bytes == -1) | |
9779 | remote_hostio_error (remote_errno); | |
9780 | ||
9781 | offset += bytes; | |
9782 | ||
9783 | bytes = fwrite (buffer, 1, bytes, file); | |
9784 | if (bytes == 0) | |
9785 | perror_with_name (local_file); | |
9786 | } | |
9787 | ||
9788 | discard_cleanups (close_cleanup); | |
9789 | if (remote_hostio_close (fd, &remote_errno)) | |
9790 | remote_hostio_error (remote_errno); | |
9791 | ||
9792 | if (from_tty) | |
9793 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9794 | do_cleanups (back_to); | |
9795 | } | |
9796 | ||
9797 | void | |
9798 | remote_file_delete (const char *remote_file, int from_tty) | |
9799 | { | |
9800 | int retcode, remote_errno; | |
9801 | ||
9802 | if (!remote_desc) | |
9803 | error (_("command can only be used with remote target")); | |
9804 | ||
9805 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9806 | if (retcode == -1) | |
9807 | remote_hostio_error (remote_errno); | |
9808 | ||
9809 | if (from_tty) | |
9810 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9811 | } | |
9812 | ||
9813 | static void | |
9814 | remote_put_command (char *args, int from_tty) | |
9815 | { | |
9816 | struct cleanup *back_to; | |
9817 | char **argv; | |
9818 | ||
d1a41061 PP |
9819 | if (args == NULL) |
9820 | error_no_arg (_("file to put")); | |
9821 | ||
9822 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9823 | back_to = make_cleanup_freeargv (argv); |
9824 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9825 | error (_("Invalid parameters to remote put")); | |
9826 | ||
9827 | remote_file_put (argv[0], argv[1], from_tty); | |
9828 | ||
9829 | do_cleanups (back_to); | |
9830 | } | |
9831 | ||
9832 | static void | |
9833 | remote_get_command (char *args, int from_tty) | |
9834 | { | |
9835 | struct cleanup *back_to; | |
9836 | char **argv; | |
9837 | ||
d1a41061 PP |
9838 | if (args == NULL) |
9839 | error_no_arg (_("file to get")); | |
9840 | ||
9841 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9842 | back_to = make_cleanup_freeargv (argv); |
9843 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9844 | error (_("Invalid parameters to remote get")); | |
9845 | ||
9846 | remote_file_get (argv[0], argv[1], from_tty); | |
9847 | ||
9848 | do_cleanups (back_to); | |
9849 | } | |
9850 | ||
9851 | static void | |
9852 | remote_delete_command (char *args, int from_tty) | |
9853 | { | |
9854 | struct cleanup *back_to; | |
9855 | char **argv; | |
9856 | ||
d1a41061 PP |
9857 | if (args == NULL) |
9858 | error_no_arg (_("file to delete")); | |
9859 | ||
9860 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9861 | back_to = make_cleanup_freeargv (argv); |
9862 | if (argv[0] == NULL || argv[1] != NULL) | |
9863 | error (_("Invalid parameters to remote delete")); | |
9864 | ||
9865 | remote_file_delete (argv[0], from_tty); | |
9866 | ||
9867 | do_cleanups (back_to); | |
9868 | } | |
9869 | ||
9870 | static void | |
9871 | remote_command (char *args, int from_tty) | |
9872 | { | |
9873 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9874 | } | |
9875 | ||
b2175913 MS |
9876 | static int |
9877 | remote_can_execute_reverse (void) | |
9878 | { | |
40ab02ce MS |
9879 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9880 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9881 | return 1; | |
9882 | else | |
9883 | return 0; | |
b2175913 MS |
9884 | } |
9885 | ||
74531fed PA |
9886 | static int |
9887 | remote_supports_non_stop (void) | |
9888 | { | |
9889 | return 1; | |
9890 | } | |
9891 | ||
03583c20 UW |
9892 | static int |
9893 | remote_supports_disable_randomization (void) | |
9894 | { | |
9895 | /* Only supported in extended mode. */ | |
9896 | return 0; | |
9897 | } | |
9898 | ||
8a305172 PA |
9899 | static int |
9900 | remote_supports_multi_process (void) | |
9901 | { | |
9902 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9903 | |
901f9912 UW |
9904 | /* Only extended-remote handles being attached to multiple |
9905 | processes, even though plain remote can use the multi-process | |
9906 | thread id extensions, so that GDB knows the target process's | |
9907 | PID. */ | |
9908 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
9909 | } |
9910 | ||
782b2b07 SS |
9911 | int |
9912 | remote_supports_cond_tracepoints (void) | |
9913 | { | |
9914 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9915 | |
782b2b07 SS |
9916 | return rs->cond_tracepoints; |
9917 | } | |
9918 | ||
3788aec7 LM |
9919 | static int |
9920 | remote_supports_cond_breakpoints (void) | |
9921 | { | |
9922 | struct remote_state *rs = get_remote_state (); | |
9923 | ||
9924 | return rs->cond_breakpoints; | |
9925 | } | |
9926 | ||
7a697b8d SS |
9927 | int |
9928 | remote_supports_fast_tracepoints (void) | |
9929 | { | |
9930 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9931 | |
7a697b8d SS |
9932 | return rs->fast_tracepoints; |
9933 | } | |
9934 | ||
0fb4aa4b PA |
9935 | static int |
9936 | remote_supports_static_tracepoints (void) | |
9937 | { | |
9938 | struct remote_state *rs = get_remote_state (); | |
9939 | ||
9940 | return rs->static_tracepoints; | |
9941 | } | |
9942 | ||
1e4d1764 YQ |
9943 | static int |
9944 | remote_supports_install_in_trace (void) | |
9945 | { | |
9946 | struct remote_state *rs = get_remote_state (); | |
9947 | ||
9948 | return rs->install_in_trace; | |
9949 | } | |
9950 | ||
d248b706 KY |
9951 | static int |
9952 | remote_supports_enable_disable_tracepoint (void) | |
9953 | { | |
9954 | struct remote_state *rs = get_remote_state (); | |
9955 | ||
9956 | return rs->enable_disable_tracepoints; | |
9957 | } | |
9958 | ||
3065dfb6 SS |
9959 | static int |
9960 | remote_supports_string_tracing (void) | |
9961 | { | |
9962 | struct remote_state *rs = get_remote_state (); | |
9963 | ||
9964 | return rs->string_tracing; | |
9965 | } | |
9966 | ||
35b1e5cc | 9967 | static void |
ad91cd99 | 9968 | remote_trace_init (void) |
35b1e5cc SS |
9969 | { |
9970 | putpkt ("QTinit"); | |
9971 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9972 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9973 | error (_("Target does not support this command.")); |
9974 | } | |
9975 | ||
9976 | static void free_actions_list (char **actions_list); | |
9977 | static void free_actions_list_cleanup_wrapper (void *); | |
9978 | static void | |
9979 | free_actions_list_cleanup_wrapper (void *al) | |
9980 | { | |
9981 | free_actions_list (al); | |
9982 | } | |
9983 | ||
9984 | static void | |
9985 | free_actions_list (char **actions_list) | |
9986 | { | |
9987 | int ndx; | |
9988 | ||
9989 | if (actions_list == 0) | |
9990 | return; | |
9991 | ||
9992 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9993 | xfree (actions_list[ndx]); | |
9994 | ||
9995 | xfree (actions_list); | |
9996 | } | |
9997 | ||
409873ef SS |
9998 | /* Recursive routine to walk through command list including loops, and |
9999 | download packets for each command. */ | |
10000 | ||
10001 | static void | |
10002 | remote_download_command_source (int num, ULONGEST addr, | |
10003 | struct command_line *cmds) | |
10004 | { | |
10005 | struct remote_state *rs = get_remote_state (); | |
10006 | struct command_line *cmd; | |
10007 | ||
10008 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10009 | { | |
0df8b418 | 10010 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10011 | strcpy (rs->buf, "QTDPsrc:"); |
10012 | encode_source_string (num, addr, "cmd", cmd->line, | |
10013 | rs->buf + strlen (rs->buf), | |
10014 | rs->buf_size - strlen (rs->buf)); | |
10015 | putpkt (rs->buf); | |
10016 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10017 | if (strcmp (target_buf, "OK")) | |
10018 | warning (_("Target does not support source download.")); | |
10019 | ||
10020 | if (cmd->control_type == while_control | |
10021 | || cmd->control_type == while_stepping_control) | |
10022 | { | |
10023 | remote_download_command_source (num, addr, *cmd->body_list); | |
10024 | ||
0df8b418 | 10025 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10026 | strcpy (rs->buf, "QTDPsrc:"); |
10027 | encode_source_string (num, addr, "cmd", "end", | |
10028 | rs->buf + strlen (rs->buf), | |
10029 | rs->buf_size - strlen (rs->buf)); | |
10030 | putpkt (rs->buf); | |
10031 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10032 | if (strcmp (target_buf, "OK")) | |
10033 | warning (_("Target does not support source download.")); | |
10034 | } | |
10035 | } | |
10036 | } | |
10037 | ||
35b1e5cc | 10038 | static void |
e8ba3115 | 10039 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10040 | { |
e8ba3115 | 10041 | |
35b1e5cc | 10042 | CORE_ADDR tpaddr; |
409873ef | 10043 | char addrbuf[40]; |
35b1e5cc SS |
10044 | char buf[2048]; |
10045 | char **tdp_actions; | |
10046 | char **stepping_actions; | |
10047 | int ndx; | |
10048 | struct cleanup *old_chain = NULL; | |
10049 | struct agent_expr *aexpr; | |
10050 | struct cleanup *aexpr_chain = NULL; | |
10051 | char *pkt; | |
e8ba3115 | 10052 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10053 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10054 | |
e8ba3115 YQ |
10055 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
10056 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
10057 | tdp_actions); | |
10058 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10059 | stepping_actions); | |
10060 | ||
10061 | tpaddr = loc->address; | |
10062 | sprintf_vma (addrbuf, tpaddr); | |
10063 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number, | |
10064 | addrbuf, /* address */ | |
10065 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10066 | t->step_count, t->pass_count); | |
10067 | /* Fast tracepoints are mostly handled by the target, but we can | |
10068 | tell the target how big of an instruction block should be moved | |
10069 | around. */ | |
10070 | if (b->type == bp_fast_tracepoint) | |
10071 | { | |
10072 | /* Only test for support at download time; we may not know | |
10073 | target capabilities at definition time. */ | |
10074 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10075 | { |
e8ba3115 | 10076 | int isize; |
35b1e5cc | 10077 | |
e8ba3115 YQ |
10078 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
10079 | tpaddr, &isize, NULL)) | |
10080 | sprintf (buf + strlen (buf), ":F%x", isize); | |
35b1e5cc | 10081 | else |
e8ba3115 YQ |
10082 | /* If it passed validation at definition but fails now, |
10083 | something is very wrong. */ | |
10084 | internal_error (__FILE__, __LINE__, | |
10085 | _("Fast tracepoint not " | |
10086 | "valid during download")); | |
35b1e5cc | 10087 | } |
e8ba3115 YQ |
10088 | else |
10089 | /* Fast tracepoints are functionally identical to regular | |
10090 | tracepoints, so don't take lack of support as a reason to | |
10091 | give up on the trace run. */ | |
10092 | warning (_("Target does not support fast tracepoints, " | |
10093 | "downloading %d as regular tracepoint"), b->number); | |
10094 | } | |
10095 | else if (b->type == bp_static_tracepoint) | |
10096 | { | |
10097 | /* Only test for support at download time; we may not know | |
10098 | target capabilities at definition time. */ | |
10099 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10100 | { |
e8ba3115 | 10101 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10102 | |
e8ba3115 YQ |
10103 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10104 | strcat (buf, ":S"); | |
0fb4aa4b | 10105 | else |
e8ba3115 | 10106 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10107 | } |
e8ba3115 YQ |
10108 | else |
10109 | /* Fast tracepoints are functionally identical to regular | |
10110 | tracepoints, so don't take lack of support as a reason | |
10111 | to give up on the trace run. */ | |
10112 | error (_("Target does not support static tracepoints")); | |
10113 | } | |
10114 | /* If the tracepoint has a conditional, make it into an agent | |
10115 | expression and append to the definition. */ | |
10116 | if (loc->cond) | |
10117 | { | |
10118 | /* Only test support at download time, we may not know target | |
10119 | capabilities at definition time. */ | |
10120 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10121 | { |
e8ba3115 YQ |
10122 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10123 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
10124 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
10125 | pkt = buf + strlen (buf); | |
10126 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10127 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10128 | *pkt = '\0'; | |
10129 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10130 | } |
e8ba3115 YQ |
10131 | else |
10132 | warning (_("Target does not support conditional tracepoints, " | |
10133 | "ignoring tp %d cond"), b->number); | |
10134 | } | |
35b1e5cc | 10135 | |
d9b3f62e | 10136 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10137 | strcat (buf, "-"); |
10138 | putpkt (buf); | |
10139 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10140 | if (strcmp (target_buf, "OK")) | |
10141 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10142 | |
e8ba3115 YQ |
10143 | /* do_single_steps (t); */ |
10144 | if (tdp_actions) | |
10145 | { | |
10146 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10147 | { |
e8ba3115 YQ |
10148 | QUIT; /* Allow user to bail out with ^C. */ |
10149 | sprintf (buf, "QTDP:-%x:%s:%s%c", | |
10150 | b->number, addrbuf, /* address */ | |
10151 | tdp_actions[ndx], | |
10152 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10153 | ? '-' : 0)); | |
10154 | putpkt (buf); | |
10155 | remote_get_noisy_reply (&target_buf, | |
10156 | &target_buf_size); | |
10157 | if (strcmp (target_buf, "OK")) | |
10158 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10159 | } |
e8ba3115 YQ |
10160 | } |
10161 | if (stepping_actions) | |
10162 | { | |
10163 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10164 | { |
e8ba3115 YQ |
10165 | QUIT; /* Allow user to bail out with ^C. */ |
10166 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", | |
10167 | b->number, addrbuf, /* address */ | |
10168 | ((ndx == 0) ? "S" : ""), | |
10169 | stepping_actions[ndx], | |
10170 | (stepping_actions[ndx + 1] ? "-" : "")); | |
10171 | putpkt (buf); | |
10172 | remote_get_noisy_reply (&target_buf, | |
10173 | &target_buf_size); | |
10174 | if (strcmp (target_buf, "OK")) | |
10175 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10176 | } |
e8ba3115 | 10177 | } |
409873ef | 10178 | |
e8ba3115 YQ |
10179 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10180 | == PACKET_ENABLE) | |
10181 | { | |
10182 | if (b->addr_string) | |
409873ef | 10183 | { |
e8ba3115 YQ |
10184 | strcpy (buf, "QTDPsrc:"); |
10185 | encode_source_string (b->number, loc->address, | |
10186 | "at", b->addr_string, buf + strlen (buf), | |
10187 | 2048 - strlen (buf)); | |
409873ef | 10188 | |
e8ba3115 YQ |
10189 | putpkt (buf); |
10190 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10191 | if (strcmp (target_buf, "OK")) | |
10192 | warning (_("Target does not support source download.")); | |
409873ef | 10193 | } |
e8ba3115 YQ |
10194 | if (b->cond_string) |
10195 | { | |
10196 | strcpy (buf, "QTDPsrc:"); | |
10197 | encode_source_string (b->number, loc->address, | |
10198 | "cond", b->cond_string, buf + strlen (buf), | |
10199 | 2048 - strlen (buf)); | |
10200 | putpkt (buf); | |
10201 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10202 | if (strcmp (target_buf, "OK")) | |
10203 | warning (_("Target does not support source download.")); | |
10204 | } | |
10205 | remote_download_command_source (b->number, loc->address, | |
10206 | breakpoint_commands (b)); | |
35b1e5cc | 10207 | } |
e8ba3115 YQ |
10208 | |
10209 | do_cleanups (old_chain); | |
35b1e5cc SS |
10210 | } |
10211 | ||
1e4d1764 YQ |
10212 | static int |
10213 | remote_can_download_tracepoint (void) | |
10214 | { | |
10215 | struct trace_status *ts = current_trace_status (); | |
10216 | int status = remote_get_trace_status (ts); | |
10217 | ||
10218 | if (status == -1 || !ts->running_known || !ts->running) | |
10219 | return 0; | |
10220 | ||
10221 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10222 | installing tracepoint in trace, we have to return. */ | |
10223 | if (!remote_supports_install_in_trace ()) | |
10224 | return 0; | |
10225 | ||
10226 | return 1; | |
10227 | } | |
10228 | ||
10229 | ||
35b1e5cc SS |
10230 | static void |
10231 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10232 | { | |
10233 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10234 | char *p; |
35b1e5cc | 10235 | |
00bf0b85 SS |
10236 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
10237 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
10238 | p = rs->buf + strlen (rs->buf); | |
10239 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10240 | error (_("Trace state variable name too long for tsv definition packet")); | |
10241 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10242 | *p++ = '\0'; | |
35b1e5cc SS |
10243 | putpkt (rs->buf); |
10244 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10245 | if (*target_buf == '\0') |
10246 | error (_("Target does not support this command.")); | |
10247 | if (strcmp (target_buf, "OK") != 0) | |
10248 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10249 | } |
10250 | ||
d248b706 KY |
10251 | static void |
10252 | remote_enable_tracepoint (struct bp_location *location) | |
10253 | { | |
10254 | struct remote_state *rs = get_remote_state (); | |
10255 | char addr_buf[40]; | |
10256 | ||
10257 | sprintf_vma (addr_buf, location->address); | |
10258 | sprintf (rs->buf, "QTEnable:%x:%s", location->owner->number, addr_buf); | |
10259 | putpkt (rs->buf); | |
10260 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10261 | if (*rs->buf == '\0') | |
10262 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10263 | if (strcmp (rs->buf, "OK") != 0) | |
10264 | error (_("Error on target while enabling tracepoint.")); | |
10265 | } | |
10266 | ||
10267 | static void | |
10268 | remote_disable_tracepoint (struct bp_location *location) | |
10269 | { | |
10270 | struct remote_state *rs = get_remote_state (); | |
10271 | char addr_buf[40]; | |
10272 | ||
10273 | sprintf_vma (addr_buf, location->address); | |
10274 | sprintf (rs->buf, "QTDisable:%x:%s", location->owner->number, addr_buf); | |
10275 | putpkt (rs->buf); | |
10276 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10277 | if (*rs->buf == '\0') | |
10278 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10279 | if (strcmp (rs->buf, "OK") != 0) | |
10280 | error (_("Error on target while disabling tracepoint.")); | |
10281 | } | |
10282 | ||
35b1e5cc | 10283 | static void |
ad91cd99 | 10284 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10285 | { |
10286 | asection *s; | |
10287 | bfd_size_type size; | |
608bcef2 | 10288 | bfd_vma vma; |
35b1e5cc | 10289 | int anysecs = 0; |
c2fa21f1 | 10290 | int offset = 0; |
35b1e5cc SS |
10291 | |
10292 | if (!exec_bfd) | |
10293 | return; /* No information to give. */ | |
10294 | ||
10295 | strcpy (target_buf, "QTro"); | |
10296 | for (s = exec_bfd->sections; s; s = s->next) | |
10297 | { | |
10298 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10299 | int sec_length; |
35b1e5cc SS |
10300 | |
10301 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10302 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10303 | (s->flags & SEC_READONLY) == 0) |
10304 | continue; | |
10305 | ||
10306 | anysecs = 1; | |
608bcef2 | 10307 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 10308 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10309 | sprintf_vma (tmp1, vma); |
10310 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10311 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10312 | if (offset + sec_length + 1 > target_buf_size) | |
10313 | { | |
864ac8a7 HZ |
10314 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10315 | != PACKET_ENABLE) | |
10316 | warning (_("\ | |
c2fa21f1 HZ |
10317 | Too many sections for read-only sections definition packet.")); |
10318 | break; | |
10319 | } | |
10320 | sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2); | |
10321 | offset += sec_length; | |
35b1e5cc SS |
10322 | } |
10323 | if (anysecs) | |
10324 | { | |
10325 | putpkt (target_buf); | |
10326 | getpkt (&target_buf, &target_buf_size, 0); | |
10327 | } | |
10328 | } | |
10329 | ||
10330 | static void | |
ad91cd99 | 10331 | remote_trace_start (void) |
35b1e5cc SS |
10332 | { |
10333 | putpkt ("QTStart"); | |
10334 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10335 | if (*target_buf == '\0') |
10336 | error (_("Target does not support this command.")); | |
10337 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10338 | error (_("Bogus reply from target: %s"), target_buf); |
10339 | } | |
10340 | ||
10341 | static int | |
00bf0b85 | 10342 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10343 | { |
953b98d1 | 10344 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10345 | char *p = NULL; |
0df8b418 | 10346 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10347 | extern int trace_regblock_size; |
67f41397 | 10348 | volatile struct gdb_exception ex; |
a744cf53 | 10349 | |
00bf0b85 SS |
10350 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10351 | ||
35b1e5cc | 10352 | putpkt ("qTStatus"); |
67f41397 JK |
10353 | |
10354 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10355 | { | |
10356 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10357 | } | |
10358 | if (ex.reason < 0) | |
10359 | { | |
10360 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10361 | return -1; | |
10362 | } | |
00bf0b85 SS |
10363 | |
10364 | /* If the remote target doesn't do tracing, flag it. */ | |
10365 | if (*p == '\0') | |
10366 | return -1; | |
35b1e5cc | 10367 | |
00bf0b85 SS |
10368 | /* We're working with a live target. */ |
10369 | ts->from_file = 0; | |
10370 | ||
10371 | /* Set some defaults. */ | |
10372 | ts->running_known = 0; | |
10373 | ts->stop_reason = trace_stop_reason_unknown; | |
10374 | ts->traceframe_count = -1; | |
10375 | ts->buffer_free = 0; | |
10376 | ||
10377 | if (*p++ != 'T') | |
35b1e5cc SS |
10378 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10379 | ||
00bf0b85 SS |
10380 | parse_trace_status (p, ts); |
10381 | ||
10382 | return ts->running; | |
35b1e5cc SS |
10383 | } |
10384 | ||
f196051f SS |
10385 | void |
10386 | remote_get_tracepoint_status (struct breakpoint *bp, | |
10387 | struct uploaded_tp *utp) | |
10388 | { | |
10389 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10390 | char *reply; |
10391 | struct bp_location *loc; | |
10392 | struct tracepoint *tp = (struct tracepoint *) bp; | |
10393 | ||
10394 | if (tp) | |
10395 | { | |
10396 | tp->base.hit_count = 0; | |
10397 | tp->traceframe_usage = 0; | |
10398 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10399 | { | |
10400 | /* If the tracepoint was never downloaded, don't go asking for | |
10401 | any status. */ | |
10402 | if (tp->number_on_target == 0) | |
10403 | continue; | |
2bf50f6f JB |
10404 | sprintf (rs->buf, "qTP:%x:%s", tp->number_on_target, |
10405 | phex_nz (loc->address, 0)); | |
f196051f SS |
10406 | putpkt (rs->buf); |
10407 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10408 | if (reply && *reply) | |
10409 | { | |
10410 | if (*reply == 'V') | |
10411 | parse_tracepoint_status (reply + 1, bp, utp); | |
10412 | } | |
10413 | } | |
10414 | } | |
10415 | else if (utp) | |
10416 | { | |
10417 | utp->hit_count = 0; | |
10418 | utp->traceframe_usage = 0; | |
2bf50f6f | 10419 | sprintf (rs->buf, "qTP:%x:%s", utp->number, phex_nz (utp->addr, 0)); |
f196051f SS |
10420 | putpkt (rs->buf); |
10421 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10422 | if (reply && *reply) | |
10423 | { | |
10424 | if (*reply == 'V') | |
10425 | parse_tracepoint_status (reply + 1, bp, utp); | |
10426 | } | |
10427 | } | |
10428 | } | |
10429 | ||
35b1e5cc | 10430 | static void |
ad91cd99 | 10431 | remote_trace_stop (void) |
35b1e5cc SS |
10432 | { |
10433 | putpkt ("QTStop"); | |
10434 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10435 | if (*target_buf == '\0') |
10436 | error (_("Target does not support this command.")); | |
10437 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10438 | error (_("Bogus reply from target: %s"), target_buf); |
10439 | } | |
10440 | ||
10441 | static int | |
10442 | remote_trace_find (enum trace_find_type type, int num, | |
10443 | ULONGEST addr1, ULONGEST addr2, | |
10444 | int *tpp) | |
10445 | { | |
10446 | struct remote_state *rs = get_remote_state (); | |
10447 | char *p, *reply; | |
10448 | int target_frameno = -1, target_tracept = -1; | |
10449 | ||
e6e4e701 PA |
10450 | /* Lookups other than by absolute frame number depend on the current |
10451 | trace selected, so make sure it is correct on the remote end | |
10452 | first. */ | |
10453 | if (type != tfind_number) | |
10454 | set_remote_traceframe (); | |
10455 | ||
35b1e5cc SS |
10456 | p = rs->buf; |
10457 | strcpy (p, "QTFrame:"); | |
10458 | p = strchr (p, '\0'); | |
10459 | switch (type) | |
10460 | { | |
10461 | case tfind_number: | |
10462 | sprintf (p, "%x", num); | |
10463 | break; | |
10464 | case tfind_pc: | |
00bf0b85 | 10465 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10466 | break; |
10467 | case tfind_tp: | |
10468 | sprintf (p, "tdp:%x", num); | |
10469 | break; | |
10470 | case tfind_range: | |
00bf0b85 | 10471 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10472 | break; |
10473 | case tfind_outside: | |
00bf0b85 | 10474 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10475 | break; |
10476 | default: | |
9b20d036 | 10477 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10478 | } |
10479 | ||
10480 | putpkt (rs->buf); | |
10481 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10482 | if (*reply == '\0') |
10483 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10484 | |
10485 | while (reply && *reply) | |
10486 | switch (*reply) | |
10487 | { | |
10488 | case 'F': | |
f197e0f1 VP |
10489 | p = ++reply; |
10490 | target_frameno = (int) strtol (p, &reply, 16); | |
10491 | if (reply == p) | |
10492 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10493 | /* Don't update our remote traceframe number cache on failure |
10494 | to select a remote traceframe. */ | |
f197e0f1 VP |
10495 | if (target_frameno == -1) |
10496 | return -1; | |
35b1e5cc SS |
10497 | break; |
10498 | case 'T': | |
f197e0f1 VP |
10499 | p = ++reply; |
10500 | target_tracept = (int) strtol (p, &reply, 16); | |
10501 | if (reply == p) | |
10502 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10503 | break; |
10504 | case 'O': /* "OK"? */ | |
10505 | if (reply[1] == 'K' && reply[2] == '\0') | |
10506 | reply += 2; | |
10507 | else | |
10508 | error (_("Bogus reply from target: %s"), reply); | |
10509 | break; | |
10510 | default: | |
10511 | error (_("Bogus reply from target: %s"), reply); | |
10512 | } | |
10513 | if (tpp) | |
10514 | *tpp = target_tracept; | |
e6e4e701 PA |
10515 | |
10516 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10517 | return target_frameno; |
10518 | } | |
10519 | ||
10520 | static int | |
10521 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10522 | { | |
10523 | struct remote_state *rs = get_remote_state (); | |
10524 | char *reply; | |
10525 | ULONGEST uval; | |
10526 | ||
e6e4e701 PA |
10527 | set_remote_traceframe (); |
10528 | ||
35b1e5cc SS |
10529 | sprintf (rs->buf, "qTV:%x", tsvnum); |
10530 | putpkt (rs->buf); | |
10531 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10532 | if (reply && *reply) | |
10533 | { | |
10534 | if (*reply == 'V') | |
10535 | { | |
10536 | unpack_varlen_hex (reply + 1, &uval); | |
10537 | *val = (LONGEST) uval; | |
10538 | return 1; | |
10539 | } | |
10540 | } | |
10541 | return 0; | |
10542 | } | |
10543 | ||
00bf0b85 | 10544 | static int |
011aacb0 | 10545 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10546 | { |
10547 | struct remote_state *rs = get_remote_state (); | |
10548 | char *p, *reply; | |
10549 | ||
10550 | p = rs->buf; | |
10551 | strcpy (p, "QTSave:"); | |
10552 | p += strlen (p); | |
10553 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10554 | error (_("Remote file name too long for trace save packet")); | |
10555 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10556 | *p++ = '\0'; | |
10557 | putpkt (rs->buf); | |
ad91cd99 | 10558 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10559 | if (*reply == '\0') |
ad91cd99 PA |
10560 | error (_("Target does not support this command.")); |
10561 | if (strcmp (reply, "OK") != 0) | |
10562 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10563 | return 0; |
10564 | } | |
10565 | ||
10566 | /* This is basically a memory transfer, but needs to be its own packet | |
10567 | because we don't know how the target actually organizes its trace | |
10568 | memory, plus we want to be able to ask for as much as possible, but | |
10569 | not be unhappy if we don't get as much as we ask for. */ | |
10570 | ||
10571 | static LONGEST | |
10572 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10573 | { | |
10574 | struct remote_state *rs = get_remote_state (); | |
10575 | char *reply; | |
10576 | char *p; | |
10577 | int rslt; | |
10578 | ||
10579 | p = rs->buf; | |
10580 | strcpy (p, "qTBuffer:"); | |
10581 | p += strlen (p); | |
10582 | p += hexnumstr (p, offset); | |
10583 | *p++ = ','; | |
10584 | p += hexnumstr (p, len); | |
10585 | *p++ = '\0'; | |
10586 | ||
10587 | putpkt (rs->buf); | |
10588 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10589 | if (reply && *reply) | |
10590 | { | |
10591 | /* 'l' by itself means we're at the end of the buffer and | |
10592 | there is nothing more to get. */ | |
10593 | if (*reply == 'l') | |
10594 | return 0; | |
10595 | ||
10596 | /* Convert the reply into binary. Limit the number of bytes to | |
10597 | convert according to our passed-in buffer size, rather than | |
10598 | what was returned in the packet; if the target is | |
10599 | unexpectedly generous and gives us a bigger reply than we | |
10600 | asked for, we don't want to crash. */ | |
10601 | rslt = hex2bin (target_buf, buf, len); | |
10602 | return rslt; | |
10603 | } | |
10604 | ||
10605 | /* Something went wrong, flag as an error. */ | |
10606 | return -1; | |
10607 | } | |
10608 | ||
35b1e5cc SS |
10609 | static void |
10610 | remote_set_disconnected_tracing (int val) | |
10611 | { | |
10612 | struct remote_state *rs = get_remote_state (); | |
10613 | ||
33da3f1c SS |
10614 | if (rs->disconnected_tracing) |
10615 | { | |
ad91cd99 PA |
10616 | char *reply; |
10617 | ||
33da3f1c SS |
10618 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10619 | putpkt (rs->buf); | |
ad91cd99 PA |
10620 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10621 | if (*reply == '\0') | |
33da3f1c | 10622 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10623 | if (strcmp (reply, "OK") != 0) |
10624 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10625 | } |
10626 | else if (val) | |
10627 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10628 | } |
10629 | ||
dc146f7c VP |
10630 | static int |
10631 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10632 | { | |
10633 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10634 | |
dc146f7c VP |
10635 | if (info && info->private) |
10636 | return info->private->core; | |
10637 | return -1; | |
10638 | } | |
10639 | ||
4daf5ac0 SS |
10640 | static void |
10641 | remote_set_circular_trace_buffer (int val) | |
10642 | { | |
10643 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10644 | char *reply; |
4daf5ac0 SS |
10645 | |
10646 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10647 | putpkt (rs->buf); | |
ad91cd99 PA |
10648 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10649 | if (*reply == '\0') | |
4daf5ac0 | 10650 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10651 | if (strcmp (reply, "OK") != 0) |
10652 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10653 | } |
10654 | ||
b3b9301e PA |
10655 | static struct traceframe_info * |
10656 | remote_traceframe_info (void) | |
10657 | { | |
10658 | char *text; | |
10659 | ||
10660 | text = target_read_stralloc (¤t_target, | |
10661 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10662 | if (text != NULL) | |
10663 | { | |
10664 | struct traceframe_info *info; | |
10665 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10666 | ||
10667 | info = parse_traceframe_info (text); | |
10668 | do_cleanups (back_to); | |
10669 | return info; | |
10670 | } | |
10671 | ||
10672 | return NULL; | |
10673 | } | |
10674 | ||
405f8e94 SS |
10675 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10676 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10677 | if the packet is not supported, and 0 if the minimum instruction | |
10678 | length is unknown. */ | |
10679 | ||
10680 | static int | |
10681 | remote_get_min_fast_tracepoint_insn_len (void) | |
10682 | { | |
10683 | struct remote_state *rs = get_remote_state (); | |
10684 | char *reply; | |
10685 | ||
e886a173 PA |
10686 | /* If we're not debugging a process yet, the IPA can't be |
10687 | loaded. */ | |
10688 | if (!target_has_execution) | |
10689 | return 0; | |
10690 | ||
10691 | /* Make sure the remote is pointing at the right process. */ | |
10692 | set_general_process (); | |
10693 | ||
405f8e94 SS |
10694 | sprintf (rs->buf, "qTMinFTPILen"); |
10695 | putpkt (rs->buf); | |
10696 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10697 | if (*reply == '\0') | |
10698 | return -1; | |
10699 | else | |
10700 | { | |
10701 | ULONGEST min_insn_len; | |
10702 | ||
10703 | unpack_varlen_hex (reply, &min_insn_len); | |
10704 | ||
10705 | return (int) min_insn_len; | |
10706 | } | |
10707 | } | |
10708 | ||
f196051f SS |
10709 | static int |
10710 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10711 | { | |
10712 | struct remote_state *rs = get_remote_state (); | |
10713 | char *reply; | |
10714 | char *buf = rs->buf; | |
10715 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10716 | int nbytes; | |
10717 | ||
10718 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10719 | if (user) | |
10720 | { | |
10721 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10722 | nbytes = bin2hex (user, buf, 0); | |
10723 | buf += 2 * nbytes; | |
10724 | *buf++ = ';'; | |
10725 | } | |
10726 | if (notes) | |
10727 | { | |
10728 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10729 | nbytes = bin2hex (notes, buf, 0); | |
10730 | buf += 2 * nbytes; | |
10731 | *buf++ = ';'; | |
10732 | } | |
10733 | if (stop_notes) | |
10734 | { | |
10735 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10736 | nbytes = bin2hex (stop_notes, buf, 0); | |
10737 | buf += 2 * nbytes; | |
10738 | *buf++ = ';'; | |
10739 | } | |
10740 | /* Ensure the buffer is terminated. */ | |
10741 | *buf = '\0'; | |
10742 | ||
10743 | putpkt (rs->buf); | |
10744 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10745 | if (*reply == '\0') | |
10746 | return 0; | |
10747 | ||
10748 | if (strcmp (reply, "OK") != 0) | |
10749 | error (_("Bogus reply from target: %s"), reply); | |
10750 | ||
10751 | return 1; | |
10752 | } | |
10753 | ||
c906108c | 10754 | static void |
fba45db2 | 10755 | init_remote_ops (void) |
c906108c | 10756 | { |
c5aa993b | 10757 | remote_ops.to_shortname = "remote"; |
c906108c | 10758 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10759 | remote_ops.to_doc = |
c906108c | 10760 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10761 | Specify the serial device it is connected to\n\ |
10762 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10763 | remote_ops.to_open = remote_open; |
10764 | remote_ops.to_close = remote_close; | |
c906108c | 10765 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10766 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10767 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10768 | remote_ops.to_wait = remote_wait; |
10769 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10770 | remote_ops.to_store_registers = remote_store_registers; | |
10771 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10772 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10773 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10774 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10775 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10776 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10777 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
10778 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
10779 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10780 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10781 | remote_ops.to_region_ok_for_hw_watchpoint |
10782 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10783 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10784 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10785 | remote_ops.to_kill = remote_kill; |
10786 | remote_ops.to_load = generic_load; | |
c906108c | 10787 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10788 | remote_ops.to_pass_signals = remote_pass_signals; |
c906108c | 10789 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10790 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10791 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10792 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10793 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10794 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10795 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10796 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10797 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10798 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10799 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10800 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10801 | remote_ops.to_has_memory = default_child_has_memory; | |
10802 | remote_ops.to_has_stack = default_child_has_stack; | |
10803 | remote_ops.to_has_registers = default_child_has_registers; | |
10804 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10805 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10806 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10807 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10808 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10809 | remote_ops.to_flash_erase = remote_flash_erase; |
10810 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10811 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10812 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10813 | remote_ops.to_can_async_p = remote_can_async_p; |
10814 | remote_ops.to_is_async_p = remote_is_async_p; | |
10815 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10816 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10817 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10818 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10819 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
10820 | remote_ops.to_supports_disable_randomization |
10821 | = remote_supports_disable_randomization; | |
7313baad UW |
10822 | remote_ops.to_fileio_open = remote_hostio_open; |
10823 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
10824 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
10825 | remote_ops.to_fileio_close = remote_hostio_close; | |
10826 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 10827 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 10828 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 10829 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 10830 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
35b1e5cc SS |
10831 | remote_ops.to_trace_init = remote_trace_init; |
10832 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 10833 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
10834 | remote_ops.to_download_trace_state_variable |
10835 | = remote_download_trace_state_variable; | |
d248b706 KY |
10836 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
10837 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
10838 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10839 | remote_ops.to_trace_start = remote_trace_start; | |
10840 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 10841 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
10842 | remote_ops.to_trace_stop = remote_trace_stop; |
10843 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10844 | remote_ops.to_get_trace_state_variable_value |
10845 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10846 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10847 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10848 | remote_ops.to_upload_trace_state_variables |
10849 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10850 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 10851 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 10852 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10853 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 10854 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 10855 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10856 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10857 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10858 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10859 | remote_ops.to_static_tracepoint_marker_at |
10860 | = remote_static_tracepoint_marker_at; | |
10861 | remote_ops.to_static_tracepoint_markers_by_strid | |
10862 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 10863 | remote_ops.to_traceframe_info = remote_traceframe_info; |
c906108c SS |
10864 | } |
10865 | ||
10866 | /* Set up the extended remote vector by making a copy of the standard | |
10867 | remote vector and adding to it. */ | |
10868 | ||
10869 | static void | |
fba45db2 | 10870 | init_extended_remote_ops (void) |
c906108c SS |
10871 | { |
10872 | extended_remote_ops = remote_ops; | |
10873 | ||
0f71a2f6 | 10874 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10875 | extended_remote_ops.to_longname = |
c906108c | 10876 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10877 | extended_remote_ops.to_doc = |
c906108c | 10878 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10879 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10880 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10881 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10882 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10883 | extended_remote_ops.to_detach = extended_remote_detach; |
10884 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10885 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
10886 | extended_remote_ops.to_supports_disable_randomization |
10887 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
10888 | } |
10889 | ||
6426a772 JM |
10890 | static int |
10891 | remote_can_async_p (void) | |
10892 | { | |
c6ebd6cf | 10893 | if (!target_async_permitted) |
75c99385 PA |
10894 | /* We only enable async when the user specifically asks for it. */ |
10895 | return 0; | |
10896 | ||
23860348 | 10897 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10898 | return serial_can_async_p (remote_desc); |
6426a772 JM |
10899 | } |
10900 | ||
10901 | static int | |
10902 | remote_is_async_p (void) | |
10903 | { | |
c6ebd6cf | 10904 | if (!target_async_permitted) |
75c99385 PA |
10905 | /* We only enable async when the user specifically asks for it. */ |
10906 | return 0; | |
10907 | ||
23860348 | 10908 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10909 | return serial_is_async_p (remote_desc); |
6426a772 JM |
10910 | } |
10911 | ||
2acceee2 JM |
10912 | /* Pass the SERIAL event on and up to the client. One day this code |
10913 | will be able to delay notifying the client of an event until the | |
23860348 | 10914 | point where an entire packet has been received. */ |
2acceee2 | 10915 | |
2bc416ba | 10916 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10917 | void *context); |
2acceee2 JM |
10918 | static void *async_client_context; |
10919 | static serial_event_ftype remote_async_serial_handler; | |
10920 | ||
6426a772 | 10921 | static void |
819cc324 | 10922 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10923 | { |
2acceee2 JM |
10924 | /* Don't propogate error information up to the client. Instead let |
10925 | the client find out about the error by querying the target. */ | |
10926 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10927 | } | |
10928 | ||
74531fed PA |
10929 | static void |
10930 | remote_async_inferior_event_handler (gdb_client_data data) | |
10931 | { | |
10932 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10933 | } | |
10934 | ||
10935 | static void | |
10936 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10937 | { | |
10938 | remote_get_pending_stop_replies (); | |
10939 | } | |
10940 | ||
2acceee2 | 10941 | static void |
2bc416ba | 10942 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10943 | void *context), void *context) |
2acceee2 JM |
10944 | { |
10945 | if (callback != NULL) | |
10946 | { | |
2cd58942 | 10947 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10948 | async_client_callback = callback; |
10949 | async_client_context = context; | |
10950 | } | |
10951 | else | |
2cd58942 | 10952 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10953 | } |
10954 | ||
5a2468f5 | 10955 | static void |
c2d11a7d | 10956 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10957 | { |
427c3a89 | 10958 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10959 | } |
10960 | ||
d471ea57 AC |
10961 | static void |
10962 | show_remote_cmd (char *args, int from_tty) | |
10963 | { | |
37a105a1 | 10964 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 10965 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
10966 | struct cleanup *showlist_chain; |
10967 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 10968 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
10969 | |
10970 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
10971 | for (; list != NULL; list = list->next) | |
10972 | if (strcmp (list->name, "Z-packet") == 0) | |
10973 | continue; | |
427c3a89 DJ |
10974 | else if (list->type == not_set_cmd) |
10975 | /* Alias commands are exactly like the original, except they | |
10976 | don't have the normal type. */ | |
10977 | continue; | |
10978 | else | |
37a105a1 DJ |
10979 | { |
10980 | struct cleanup *option_chain | |
10981 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 10982 | |
37a105a1 DJ |
10983 | ui_out_field_string (uiout, "name", list->name); |
10984 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
10985 | if (list->type == show_cmd) |
10986 | do_setshow_command ((char *) NULL, from_tty, list); | |
10987 | else | |
10988 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
10989 | /* Close the tuple. */ |
10990 | do_cleanups (option_chain); | |
10991 | } | |
427c3a89 DJ |
10992 | |
10993 | /* Close the tuple. */ | |
10994 | do_cleanups (showlist_chain); | |
d471ea57 | 10995 | } |
5a2468f5 | 10996 | |
0f71a2f6 | 10997 | |
23860348 | 10998 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
10999 | static void |
11000 | remote_new_objfile (struct objfile *objfile) | |
11001 | { | |
23860348 | 11002 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 11003 | remote_check_symbols (objfile); |
dc8acb97 MS |
11004 | } |
11005 | ||
00bf0b85 SS |
11006 | /* Pull all the tracepoints defined on the target and create local |
11007 | data structures representing them. We don't want to create real | |
11008 | tracepoints yet, we don't want to mess up the user's existing | |
11009 | collection. */ | |
11010 | ||
11011 | static int | |
11012 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11013 | { |
00bf0b85 SS |
11014 | struct remote_state *rs = get_remote_state (); |
11015 | char *p; | |
d5551862 | 11016 | |
00bf0b85 SS |
11017 | /* Ask for a first packet of tracepoint definition. */ |
11018 | putpkt ("qTfP"); | |
11019 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11020 | p = rs->buf; | |
11021 | while (*p && *p != 'l') | |
d5551862 | 11022 | { |
00bf0b85 SS |
11023 | parse_tracepoint_definition (p, utpp); |
11024 | /* Ask for another packet of tracepoint definition. */ | |
11025 | putpkt ("qTsP"); | |
11026 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11027 | p = rs->buf; | |
d5551862 | 11028 | } |
00bf0b85 | 11029 | return 0; |
d5551862 SS |
11030 | } |
11031 | ||
00bf0b85 SS |
11032 | static int |
11033 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11034 | { |
00bf0b85 | 11035 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11036 | char *p; |
d5551862 | 11037 | |
00bf0b85 SS |
11038 | /* Ask for a first packet of variable definition. */ |
11039 | putpkt ("qTfV"); | |
d5551862 SS |
11040 | getpkt (&rs->buf, &rs->buf_size, 0); |
11041 | p = rs->buf; | |
00bf0b85 | 11042 | while (*p && *p != 'l') |
d5551862 | 11043 | { |
00bf0b85 SS |
11044 | parse_tsv_definition (p, utsvp); |
11045 | /* Ask for another packet of variable definition. */ | |
11046 | putpkt ("qTsV"); | |
d5551862 SS |
11047 | getpkt (&rs->buf, &rs->buf_size, 0); |
11048 | p = rs->buf; | |
11049 | } | |
00bf0b85 | 11050 | return 0; |
d5551862 SS |
11051 | } |
11052 | ||
c906108c | 11053 | void |
fba45db2 | 11054 | _initialize_remote (void) |
c906108c | 11055 | { |
ea9c271d | 11056 | struct remote_state *rs; |
9a7071a8 JB |
11057 | struct cmd_list_element *cmd; |
11058 | char *cmd_name; | |
ea9c271d | 11059 | |
0f71a2f6 | 11060 | /* architecture specific data */ |
2bc416ba | 11061 | remote_gdbarch_data_handle = |
23860348 | 11062 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11063 | remote_g_packet_data_handle = |
11064 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11065 | |
ea9c271d DJ |
11066 | /* Initialize the per-target state. At the moment there is only one |
11067 | of these, not one per target. Only one target is active at a | |
11068 | time. The default buffer size is unimportant; it will be expanded | |
11069 | whenever a larger buffer is needed. */ | |
0b83947e | 11070 | rs = get_remote_state_raw (); |
ea9c271d DJ |
11071 | rs->buf_size = 400; |
11072 | rs->buf = xmalloc (rs->buf_size); | |
11073 | ||
c906108c SS |
11074 | init_remote_ops (); |
11075 | add_target (&remote_ops); | |
11076 | ||
11077 | init_extended_remote_ops (); | |
11078 | add_target (&extended_remote_ops); | |
cce74817 | 11079 | |
dc8acb97 | 11080 | /* Hook into new objfile notification. */ |
06d3b283 | 11081 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 11082 | |
b803fb0f DJ |
11083 | /* Set up signal handlers. */ |
11084 | sigint_remote_token = | |
11085 | create_async_signal_handler (async_remote_interrupt, NULL); | |
11086 | sigint_remote_twice_token = | |
6d549500 | 11087 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11088 | |
c906108c SS |
11089 | #if 0 |
11090 | init_remote_threadtests (); | |
11091 | #endif | |
11092 | ||
23860348 | 11093 | /* set/show remote ... */ |
d471ea57 | 11094 | |
1bedd215 | 11095 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11096 | Remote protocol specific variables\n\ |
11097 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11098 | the packets being used"), |
cff3e48b | 11099 | &remote_set_cmdlist, "set remote ", |
23860348 | 11100 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11101 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11102 | Remote protocol specific variables\n\ |
11103 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11104 | the packets being used"), |
cff3e48b | 11105 | &remote_show_cmdlist, "show remote ", |
23860348 | 11106 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11107 | |
1a966eab AC |
11108 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11109 | Compare section data on target to the exec file.\n\ | |
11110 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11111 | &cmdlist); |
11112 | ||
1a966eab AC |
11113 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11114 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11115 | maintenance packet TEXT\n\ |
11116 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11117 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11118 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11119 | terminating `#' character and checksum."), |
c906108c SS |
11120 | &maintenancelist); |
11121 | ||
7915a72c AC |
11122 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11123 | Set whether to send break if interrupted."), _("\ | |
11124 | Show whether to send break if interrupted."), _("\ | |
11125 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11126 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11127 | &setlist, &showlist); |
9a7071a8 JB |
11128 | cmd_name = "remotebreak"; |
11129 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11130 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11131 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11132 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11133 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11134 | ||
11135 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11136 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11137 | _("\ | |
9a7071a8 JB |
11138 | Set interrupt sequence to remote target."), _("\ |
11139 | Show interrupt sequence to remote target."), _("\ | |
11140 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11141 | NULL, show_interrupt_sequence, | |
11142 | &remote_set_cmdlist, | |
11143 | &remote_show_cmdlist); | |
11144 | ||
11145 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11146 | &interrupt_on_connect, _("\ | |
11147 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11148 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11149 | If set, interrupt sequence is sent to remote target."), | |
11150 | NULL, NULL, | |
11151 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11152 | |
23860348 | 11153 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11154 | |
1a966eab AC |
11155 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11156 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11157 | &setlist); |
1a966eab AC |
11158 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11159 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11160 | &showlist); |
11161 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11162 | set_memory_write_packet_size, _("\ |
11163 | Set the maximum number of bytes per memory-write packet.\n\ | |
11164 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11165 | default packet size. The actual limit is further reduced\n\ | |
11166 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11167 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11168 | &remote_set_cmdlist); |
11169 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11170 | set_memory_read_packet_size, _("\ |
11171 | Set the maximum number of bytes per memory-read packet.\n\ | |
11172 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11173 | default packet size. The actual limit is further reduced\n\ | |
11174 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11175 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11176 | &remote_set_cmdlist); |
11177 | add_cmd ("memory-write-packet-size", no_class, | |
11178 | show_memory_write_packet_size, | |
1a966eab | 11179 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11180 | &remote_show_cmdlist); |
11181 | add_cmd ("memory-read-packet-size", no_class, | |
11182 | show_memory_read_packet_size, | |
1a966eab | 11183 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11184 | &remote_show_cmdlist); |
c906108c | 11185 | |
b3f42336 | 11186 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11187 | &remote_hw_watchpoint_limit, _("\ |
11188 | Set the maximum number of target hardware watchpoints."), _("\ | |
11189 | Show the maximum number of target hardware watchpoints."), _("\ | |
11190 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11191 | NULL, NULL, /* FIXME: i18n: The maximum |
11192 | number of target hardware | |
11193 | watchpoints is %s. */ | |
b3f42336 | 11194 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11195 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11196 | &remote_hw_watchpoint_length_limit, _("\ | |
11197 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11198 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11199 | Specify a negative limit for unlimited."), | |
11200 | NULL, NULL, /* FIXME: i18n: The maximum | |
11201 | length (in bytes) of a target | |
11202 | hardware watchpoint is %s. */ | |
11203 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11204 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11205 | &remote_hw_breakpoint_limit, _("\ |
11206 | Set the maximum number of target hardware breakpoints."), _("\ | |
11207 | Show the maximum number of target hardware breakpoints."), _("\ | |
11208 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11209 | NULL, NULL, /* FIXME: i18n: The maximum |
11210 | number of target hardware | |
11211 | breakpoints is %s. */ | |
b3f42336 | 11212 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11213 | |
4d28ad1e AC |
11214 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
11215 | &remote_address_size, _("\ | |
11216 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
11217 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
11218 | NULL, | |
11219 | NULL, /* FIXME: i18n: */ | |
11220 | &setlist, &showlist); | |
c906108c | 11221 | |
444abaca | 11222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11223 | "X", "binary-download", 1); |
0f71a2f6 | 11224 | |
444abaca | 11225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11226 | "vCont", "verbose-resume", 0); |
506fb367 | 11227 | |
89be2091 DJ |
11228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11229 | "QPassSignals", "pass-signals", 0); | |
11230 | ||
444abaca | 11231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11232 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11233 | |
444abaca | 11234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11235 | "P", "set-register", 1); |
d471ea57 | 11236 | |
444abaca | 11237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11238 | "p", "fetch-register", 1); |
b96ec7ac | 11239 | |
444abaca | 11240 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11241 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11242 | |
444abaca | 11243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11244 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11245 | |
444abaca | 11246 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11247 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11248 | |
444abaca | 11249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11250 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11251 | |
444abaca | 11252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11253 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11254 | |
0876f84a DJ |
11255 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11256 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11257 | |
23181151 DJ |
11258 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11259 | "qXfer:features:read", "target-features", 0); | |
11260 | ||
cfa9d6d9 DJ |
11261 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11262 | "qXfer:libraries:read", "library-info", 0); | |
11263 | ||
2268b414 JK |
11264 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11265 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11266 | ||
fd79ecee DJ |
11267 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11268 | "qXfer:memory-map:read", "memory-map", 0); | |
11269 | ||
0e7f50da UW |
11270 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11271 | "qXfer:spu:read", "read-spu-object", 0); | |
11272 | ||
11273 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11274 | "qXfer:spu:write", "write-spu-object", 0); | |
11275 | ||
07e059b5 VP |
11276 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11277 | "qXfer:osdata:read", "osdata", 0); | |
11278 | ||
dc146f7c VP |
11279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11280 | "qXfer:threads:read", "threads", 0); | |
11281 | ||
4aa995e1 PA |
11282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11283 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11284 | ||
11285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11286 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11287 | ||
b3b9301e PA |
11288 | add_packet_config_cmd |
11289 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11290 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11291 | ||
444abaca | 11292 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11293 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11294 | 0); |
11295 | ||
711e434b PM |
11296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11297 | "qGetTIBAddr", "get-thread-information-block-address", | |
11298 | 0); | |
11299 | ||
40ab02ce MS |
11300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11301 | "bc", "reverse-continue", 0); | |
11302 | ||
11303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11304 | "bs", "reverse-step", 0); | |
11305 | ||
be2a5f71 DJ |
11306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11307 | "qSupported", "supported-packets", 0); | |
11308 | ||
08388c79 DE |
11309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11310 | "qSearch:memory", "search-memory", 0); | |
11311 | ||
a6b151f1 DJ |
11312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11313 | "vFile:open", "hostio-open", 0); | |
11314 | ||
11315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11316 | "vFile:pread", "hostio-pread", 0); | |
11317 | ||
11318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11319 | "vFile:pwrite", "hostio-pwrite", 0); | |
11320 | ||
11321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11322 | "vFile:close", "hostio-close", 0); | |
11323 | ||
11324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11325 | "vFile:unlink", "hostio-unlink", 0); | |
11326 | ||
b9e7b9c3 UW |
11327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11328 | "vFile:readlink", "hostio-readlink", 0); | |
11329 | ||
2d717e4f DJ |
11330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11331 | "vAttach", "attach", 0); | |
11332 | ||
11333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11334 | "vRun", "run", 0); | |
11335 | ||
a6f3e723 SL |
11336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11337 | "QStartNoAckMode", "noack", 0); | |
11338 | ||
82f73884 PA |
11339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11340 | "vKill", "kill", 0); | |
11341 | ||
0b16c5cf PA |
11342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11343 | "qAttached", "query-attached", 0); | |
11344 | ||
782b2b07 | 11345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11346 | "ConditionalTracepoints", |
11347 | "conditional-tracepoints", 0); | |
3788aec7 LM |
11348 | |
11349 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
11350 | "ConditionalBreakpoints", | |
11351 | "conditional-breakpoints", 0); | |
11352 | ||
7a697b8d SS |
11353 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11354 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11355 | |
409873ef SS |
11356 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11357 | "TracepointSource", "TracepointSource", 0); | |
11358 | ||
d914c394 SS |
11359 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11360 | "QAllow", "allow", 0); | |
11361 | ||
0fb4aa4b PA |
11362 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11363 | "StaticTracepoints", "static-tracepoints", 0); | |
11364 | ||
1e4d1764 YQ |
11365 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11366 | "InstallInTrace", "install-in-trace", 0); | |
11367 | ||
0fb4aa4b PA |
11368 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11369 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11370 | ||
78d85199 YQ |
11371 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11372 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11373 | ||
03583c20 UW |
11374 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11375 | "QDisableRandomization", "disable-randomization", 0); | |
11376 | ||
37a105a1 DJ |
11377 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11378 | Z sub-packet has its own set and show commands, but users may | |
11379 | have sets to this variable in their .gdbinit files (or in their | |
11380 | documentation). */ | |
e9e68a56 | 11381 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11382 | &remote_Z_packet_detect, _("\ |
11383 | Set use of remote protocol `Z' packets"), _("\ | |
11384 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11385 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11386 | packets."), |
e9e68a56 | 11387 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11388 | show_remote_protocol_Z_packet_cmd, |
11389 | /* FIXME: i18n: Use of remote protocol | |
11390 | `Z' packets is %s. */ | |
e9e68a56 | 11391 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11392 | |
a6b151f1 DJ |
11393 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11394 | Manipulate files on the remote system\n\ | |
11395 | Transfer files to and from the remote target system."), | |
11396 | &remote_cmdlist, "remote ", | |
11397 | 0 /* allow-unknown */, &cmdlist); | |
11398 | ||
11399 | add_cmd ("put", class_files, remote_put_command, | |
11400 | _("Copy a local file to the remote system."), | |
11401 | &remote_cmdlist); | |
11402 | ||
11403 | add_cmd ("get", class_files, remote_get_command, | |
11404 | _("Copy a remote file to the local system."), | |
11405 | &remote_cmdlist); | |
11406 | ||
11407 | add_cmd ("delete", class_files, remote_delete_command, | |
11408 | _("Delete a remote file."), | |
11409 | &remote_cmdlist); | |
11410 | ||
2d717e4f DJ |
11411 | remote_exec_file = xstrdup (""); |
11412 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11413 | &remote_exec_file, _("\ | |
11414 | Set the remote pathname for \"run\""), _("\ | |
11415 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11416 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11417 | ||
449092f6 CV |
11418 | /* Eventually initialize fileio. See fileio.c */ |
11419 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11420 | |
11421 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11422 | special ptids with it set to != 0. */ | |
82f73884 PA |
11423 | magic_null_ptid = ptid_build (42000, 1, -1); |
11424 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11425 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11426 | |
11427 | target_buf_size = 2048; | |
11428 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11429 | } |
10760264 | 11430 |