Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1988-2013 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" |
722247f1 | 37 | #include "remote-notif.h" |
4e052eda | 38 | #include "regcache.h" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
6867ae3e | 41 | #include "observer.h" |
a77053c2 | 42 | #include "solib.h" |
37a105a1 DJ |
43 | #include "cli/cli-decode.h" |
44 | #include "cli/cli-setshow.h" | |
424163ea | 45 | #include "target-descriptions.h" |
a4453b7e | 46 | #include "gdb_bfd.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
3e88cf8d | 62 | #include "gdb_stat.h" |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
d1feda86 | 70 | #include "agent.h" |
35b1e5cc | 71 | |
0df8b418 | 72 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
73 | static char *target_buf; |
74 | static long target_buf_size; | |
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 | 92 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
fee9eda9 | 93 | int forever, int *is_notif); |
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 | |
a14ed312 | 186 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 187 | |
a14ed312 | 188 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 189 | |
5a2468f5 | 190 | struct packet_config; |
5a2468f5 | 191 | |
a14ed312 | 192 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 193 | |
d471ea57 | 194 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 195 | |
bb572ddd DJ |
196 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
197 | struct cmd_list_element *c); | |
198 | ||
199 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
200 | int from_tty, | |
201 | struct cmd_list_element *c, | |
202 | const char *value); | |
203 | ||
82f73884 PA |
204 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
205 | static ptid_t read_ptid (char *buf, char **obuf); | |
206 | ||
d914c394 SS |
207 | static void remote_set_permissions (void); |
208 | ||
d5551862 | 209 | struct remote_state; |
00bf0b85 | 210 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 211 | |
00bf0b85 SS |
212 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
213 | ||
214 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
215 | ||
c8d104ad PA |
216 | static void remote_query_supported (void); |
217 | ||
218 | static void remote_check_symbols (struct objfile *objfile); | |
219 | ||
a14ed312 | 220 | void _initialize_remote (void); |
c906108c | 221 | |
74531fed | 222 | struct stop_reply; |
74531fed | 223 | static void stop_reply_xfree (struct stop_reply *); |
722247f1 | 224 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
74531fed | 225 | static void push_stop_reply (struct stop_reply *); |
5f4cf0bb | 226 | static void discard_pending_stop_replies (struct inferior *); |
74531fed PA |
227 | static int peek_stop_reply (ptid_t ptid); |
228 | ||
229 | static void remote_async_inferior_event_handler (gdb_client_data); | |
74531fed | 230 | |
d3fd5342 PA |
231 | static void remote_terminal_ours (void); |
232 | ||
d962ef82 DJ |
233 | static int remote_read_description_p (struct target_ops *target); |
234 | ||
176a6961 | 235 | static void remote_console_output (char *msg); |
dde08ee1 | 236 | |
b775012e LM |
237 | static int remote_supports_cond_breakpoints (void); |
238 | ||
d3ce09f5 SS |
239 | static int remote_can_run_breakpoint_commands (void); |
240 | ||
a6b151f1 DJ |
241 | /* For "remote". */ |
242 | ||
243 | static struct cmd_list_element *remote_cmdlist; | |
244 | ||
bb572ddd DJ |
245 | /* For "set remote" and "show remote". */ |
246 | ||
247 | static struct cmd_list_element *remote_set_cmdlist; | |
248 | static struct cmd_list_element *remote_show_cmdlist; | |
249 | ||
ea9c271d DJ |
250 | /* Description of the remote protocol state for the currently |
251 | connected target. This is per-target state, and independent of the | |
252 | selected architecture. */ | |
253 | ||
254 | struct remote_state | |
255 | { | |
256 | /* A buffer to use for incoming packets, and its current size. The | |
257 | buffer is grown dynamically for larger incoming packets. | |
258 | Outgoing packets may also be constructed in this buffer. | |
259 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
260 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
261 | packets. */ | |
262 | char *buf; | |
263 | long buf_size; | |
be2a5f71 | 264 | |
1e51243a PA |
265 | /* True if we're going through initial connection setup (finding out |
266 | about the remote side's threads, relocating symbols, etc.). */ | |
267 | int starting_up; | |
268 | ||
be2a5f71 DJ |
269 | /* If we negotiated packet size explicitly (and thus can bypass |
270 | heuristics for the largest packet size that will not overflow | |
271 | a buffer in the stub), this will be set to that packet size. | |
272 | Otherwise zero, meaning to use the guessed size. */ | |
273 | long explicit_packet_size; | |
2d717e4f DJ |
274 | |
275 | /* remote_wait is normally called when the target is running and | |
276 | waits for a stop reply packet. But sometimes we need to call it | |
277 | when the target is already stopped. We can send a "?" packet | |
278 | and have remote_wait read the response. Or, if we already have | |
279 | the response, we can stash it in BUF and tell remote_wait to | |
280 | skip calling getpkt. This flag is set when BUF contains a | |
281 | stop reply packet and the target is not waiting. */ | |
282 | int cached_wait_status; | |
a6f3e723 SL |
283 | |
284 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
285 | expect acks from each other. The connection is assumed to be | |
286 | reliable. */ | |
287 | int noack_mode; | |
82f73884 PA |
288 | |
289 | /* True if we're connected in extended remote mode. */ | |
290 | int extended; | |
291 | ||
292 | /* True if the stub reported support for multi-process | |
293 | extensions. */ | |
294 | int multi_process_aware; | |
e24a49d8 PA |
295 | |
296 | /* True if we resumed the target and we're waiting for the target to | |
297 | stop. In the mean time, we can't start another command/query. | |
298 | The remote server wouldn't be ready to process it, so we'd | |
299 | timeout waiting for a reply that would never come and eventually | |
300 | we'd close the connection. This can happen in asynchronous mode | |
301 | because we allow GDB commands while the target is running. */ | |
302 | int waiting_for_stop_reply; | |
74531fed PA |
303 | |
304 | /* True if the stub reports support for non-stop mode. */ | |
305 | int non_stop_aware; | |
306 | ||
307 | /* True if the stub reports support for vCont;t. */ | |
308 | int support_vCont_t; | |
782b2b07 SS |
309 | |
310 | /* True if the stub reports support for conditional tracepoints. */ | |
311 | int cond_tracepoints; | |
3a29589a | 312 | |
3788aec7 LM |
313 | /* True if the stub reports support for target-side breakpoint |
314 | conditions. */ | |
315 | int cond_breakpoints; | |
316 | ||
d3ce09f5 SS |
317 | /* True if the stub reports support for target-side breakpoint |
318 | commands. */ | |
319 | int breakpoint_commands; | |
320 | ||
7a697b8d SS |
321 | /* True if the stub reports support for fast tracepoints. */ |
322 | int fast_tracepoints; | |
323 | ||
0fb4aa4b PA |
324 | /* True if the stub reports support for static tracepoints. */ |
325 | int static_tracepoints; | |
326 | ||
1e4d1764 YQ |
327 | /* True if the stub reports support for installing tracepoint while |
328 | tracing. */ | |
329 | int install_in_trace; | |
330 | ||
d5551862 SS |
331 | /* True if the stub can continue running a trace while GDB is |
332 | disconnected. */ | |
333 | int disconnected_tracing; | |
334 | ||
d248b706 KY |
335 | /* True if the stub reports support for enabling and disabling |
336 | tracepoints while a trace experiment is running. */ | |
337 | int enable_disable_tracepoints; | |
338 | ||
3065dfb6 SS |
339 | /* True if the stub can collect strings using tracenz bytecode. */ |
340 | int string_tracing; | |
341 | ||
3a29589a DJ |
342 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
343 | responded to that. */ | |
344 | int ctrlc_pending_p; | |
ea9c271d DJ |
345 | }; |
346 | ||
dc146f7c VP |
347 | /* Private data that we'll store in (struct thread_info)->private. */ |
348 | struct private_thread_info | |
349 | { | |
350 | char *extra; | |
351 | int core; | |
352 | }; | |
353 | ||
354 | static void | |
355 | free_private_thread_info (struct private_thread_info *info) | |
356 | { | |
357 | xfree (info->extra); | |
358 | xfree (info); | |
359 | } | |
360 | ||
82f73884 PA |
361 | /* Returns true if the multi-process extensions are in effect. */ |
362 | static int | |
363 | remote_multi_process_p (struct remote_state *rs) | |
364 | { | |
901f9912 | 365 | return rs->multi_process_aware; |
82f73884 PA |
366 | } |
367 | ||
ea9c271d DJ |
368 | /* This data could be associated with a target, but we do not always |
369 | have access to the current target when we need it, so for now it is | |
370 | static. This will be fine for as long as only one target is in use | |
371 | at a time. */ | |
372 | static struct remote_state remote_state; | |
373 | ||
374 | static struct remote_state * | |
0b83947e | 375 | get_remote_state_raw (void) |
ea9c271d DJ |
376 | { |
377 | return &remote_state; | |
378 | } | |
379 | ||
380 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 381 | |
ad10f812 AC |
382 | struct packet_reg |
383 | { | |
384 | long offset; /* Offset into G packet. */ | |
385 | long regnum; /* GDB's internal register number. */ | |
386 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 387 | int in_g_packet; /* Always part of G packet. */ |
f5656ead | 388 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
23860348 | 389 | at present. */ |
f5656ead | 390 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
c9f4d572 | 391 | at present. */ |
ad10f812 AC |
392 | }; |
393 | ||
ea9c271d | 394 | struct remote_arch_state |
d01949b6 | 395 | { |
ad10f812 AC |
396 | /* Description of the remote protocol registers. */ |
397 | long sizeof_g_packet; | |
b323314b AC |
398 | |
399 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 400 | (making an array gdbarch_num_regs in size). */ |
b323314b | 401 | struct packet_reg *regs; |
ad10f812 | 402 | |
d01949b6 AC |
403 | /* This is the size (in chars) of the first response to the ``g'' |
404 | packet. It is used as a heuristic when determining the maximum | |
405 | size of memory-read and memory-write packets. A target will | |
406 | typically only reserve a buffer large enough to hold the ``g'' | |
407 | packet. The size does not include packet overhead (headers and | |
23860348 | 408 | trailers). */ |
d01949b6 AC |
409 | long actual_register_packet_size; |
410 | ||
411 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 412 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
413 | long remote_packet_size; |
414 | }; | |
415 | ||
35b1e5cc SS |
416 | long sizeof_pkt = 2000; |
417 | ||
418 | /* Utility: generate error from an incoming stub packet. */ | |
419 | static void | |
420 | trace_error (char *buf) | |
421 | { | |
422 | if (*buf++ != 'E') | |
423 | return; /* not an error msg */ | |
424 | switch (*buf) | |
425 | { | |
426 | case '1': /* malformed packet error */ | |
427 | if (*++buf == '0') /* general case: */ | |
428 | error (_("remote.c: error in outgoing packet.")); | |
429 | else | |
430 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
431 | strtol (buf, NULL, 16)); | |
432 | case '2': | |
433 | error (_("trace API error 0x%s."), ++buf); | |
434 | default: | |
435 | error (_("Target returns error code '%s'."), buf); | |
436 | } | |
437 | } | |
438 | ||
439 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
440 | static char * | |
441 | remote_get_noisy_reply (char **buf_p, | |
442 | long *sizeof_buf) | |
443 | { | |
444 | do /* Loop on reply from remote stub. */ | |
445 | { | |
446 | char *buf; | |
a744cf53 | 447 | |
0df8b418 | 448 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
449 | getpkt (buf_p, sizeof_buf, 0); |
450 | buf = *buf_p; | |
ad91cd99 | 451 | if (buf[0] == 'E') |
35b1e5cc | 452 | trace_error (buf); |
dde08ee1 PA |
453 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
454 | { | |
455 | ULONGEST ul; | |
456 | CORE_ADDR from, to, org_to; | |
457 | char *p, *pp; | |
458 | int adjusted_size = 0; | |
459 | volatile struct gdb_exception ex; | |
460 | ||
461 | p = buf + strlen ("qRelocInsn:"); | |
462 | pp = unpack_varlen_hex (p, &ul); | |
463 | if (*pp != ';') | |
cb91c06a | 464 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
465 | from = ul; |
466 | ||
467 | p = pp + 1; | |
a9cbf802 | 468 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
469 | to = ul; |
470 | ||
471 | org_to = to; | |
472 | ||
473 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
474 | { | |
f5656ead | 475 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
dde08ee1 PA |
476 | } |
477 | if (ex.reason >= 0) | |
478 | { | |
479 | adjusted_size = to - org_to; | |
480 | ||
bba74b36 | 481 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
482 | putpkt (buf); |
483 | } | |
484 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
485 | { | |
486 | /* Propagate memory errors silently back to the target. | |
487 | The stub may have limited the range of addresses we | |
488 | can write to, for example. */ | |
489 | putpkt ("E01"); | |
490 | } | |
491 | else | |
492 | { | |
493 | /* Something unexpectedly bad happened. Be verbose so | |
494 | we can tell what, and propagate the error back to the | |
495 | stub, so it doesn't get stuck waiting for a | |
496 | response. */ | |
497 | exception_fprintf (gdb_stderr, ex, | |
498 | _("warning: relocating instruction: ")); | |
499 | putpkt ("E01"); | |
500 | } | |
501 | } | |
ad91cd99 | 502 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
503 | remote_console_output (buf + 1); /* 'O' message from stub */ |
504 | else | |
0df8b418 | 505 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
506 | } |
507 | while (1); | |
508 | } | |
3c3bea1c | 509 | |
d01949b6 AC |
510 | /* Handle for retreving the remote protocol data from gdbarch. */ |
511 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
512 | ||
ea9c271d DJ |
513 | static struct remote_arch_state * |
514 | get_remote_arch_state (void) | |
d01949b6 | 515 | { |
f5656ead | 516 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
d01949b6 AC |
517 | } |
518 | ||
0b83947e DJ |
519 | /* Fetch the global remote target state. */ |
520 | ||
521 | static struct remote_state * | |
522 | get_remote_state (void) | |
523 | { | |
524 | /* Make sure that the remote architecture state has been | |
525 | initialized, because doing so might reallocate rs->buf. Any | |
526 | function which calls getpkt also needs to be mindful of changes | |
527 | to rs->buf, but this call limits the number of places which run | |
528 | into trouble. */ | |
529 | get_remote_arch_state (); | |
530 | ||
531 | return get_remote_state_raw (); | |
532 | } | |
533 | ||
74ca34ce DJ |
534 | static int |
535 | compare_pnums (const void *lhs_, const void *rhs_) | |
536 | { | |
537 | const struct packet_reg * const *lhs = lhs_; | |
538 | const struct packet_reg * const *rhs = rhs_; | |
539 | ||
540 | if ((*lhs)->pnum < (*rhs)->pnum) | |
541 | return -1; | |
542 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
543 | return 0; | |
544 | else | |
545 | return 1; | |
546 | } | |
547 | ||
c21236dc PA |
548 | static int |
549 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 550 | { |
74ca34ce | 551 | int regnum, num_remote_regs, offset; |
74ca34ce | 552 | struct packet_reg **remote_regs; |
ea9c271d | 553 | |
4a22f64d | 554 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 555 | { |
c21236dc | 556 | struct packet_reg *r = ®s[regnum]; |
baef701f | 557 | |
4a22f64d | 558 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
559 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
560 | r->pnum = -1; | |
561 | else | |
562 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
563 | ||
b323314b | 564 | r->regnum = regnum; |
74ca34ce DJ |
565 | } |
566 | ||
567 | /* Define the g/G packet format as the contents of each register | |
568 | with a remote protocol number, in order of ascending protocol | |
569 | number. */ | |
570 | ||
4a22f64d | 571 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 572 | * sizeof (struct packet_reg *)); |
f57d151a | 573 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 574 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 575 | regnum++) |
c21236dc PA |
576 | if (regs[regnum].pnum != -1) |
577 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 578 | |
74ca34ce DJ |
579 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
580 | compare_pnums); | |
581 | ||
582 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
583 | { | |
584 | remote_regs[regnum]->in_g_packet = 1; | |
585 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 586 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
587 | } |
588 | ||
c21236dc PA |
589 | return offset; |
590 | } | |
591 | ||
592 | /* Given the architecture described by GDBARCH, return the remote | |
593 | protocol register's number and the register's offset in the g/G | |
594 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
595 | If the target does not have a mapping for REGNUM, return false, | |
596 | otherwise, return true. */ | |
597 | ||
598 | int | |
599 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
600 | int *pnum, int *poffset) | |
601 | { | |
602 | int sizeof_g_packet; | |
603 | struct packet_reg *regs; | |
604 | struct cleanup *old_chain; | |
605 | ||
606 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
607 | ||
608 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
609 | old_chain = make_cleanup (xfree, regs); | |
610 | ||
611 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
612 | ||
613 | *pnum = regs[regnum].pnum; | |
614 | *poffset = regs[regnum].offset; | |
615 | ||
616 | do_cleanups (old_chain); | |
617 | ||
618 | return *pnum != -1; | |
619 | } | |
620 | ||
621 | static void * | |
622 | init_remote_state (struct gdbarch *gdbarch) | |
623 | { | |
624 | struct remote_state *rs = get_remote_state_raw (); | |
625 | struct remote_arch_state *rsa; | |
626 | ||
627 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
628 | ||
629 | /* Use the architecture to build a regnum<->pnum table, which will be | |
630 | 1:1 unless a feature set specifies otherwise. */ | |
631 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
632 | gdbarch_num_regs (gdbarch), | |
633 | struct packet_reg); | |
634 | ||
74ca34ce DJ |
635 | /* Record the maximum possible size of the g packet - it may turn out |
636 | to be smaller. */ | |
c21236dc | 637 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 638 | |
0df8b418 | 639 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
640 | remote stubs have a hardwired buffer size of 400 bytes |
641 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
642 | as the maximum packet-size to ensure that the packet and an extra | |
643 | NUL character can always fit in the buffer. This stops GDB | |
644 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
645 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
646 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 647 | |
ea9c271d DJ |
648 | /* This one is filled in when a ``g'' packet is received. */ |
649 | rsa->actual_register_packet_size = 0; | |
650 | ||
651 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
652 | default, adjust the size accordingly. Remember that each byte is |
653 | encoded as two characters. 32 is the overhead for the packet | |
654 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 655 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 656 | little. */ |
ea9c271d DJ |
657 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
658 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 659 | |
ea9c271d DJ |
660 | /* Make sure that the packet buffer is plenty big enough for |
661 | this architecture. */ | |
662 | if (rs->buf_size < rsa->remote_packet_size) | |
663 | { | |
664 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 665 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 666 | } |
6d820c5c | 667 | |
ea9c271d DJ |
668 | return rsa; |
669 | } | |
670 | ||
671 | /* Return the current allowed size of a remote packet. This is | |
672 | inferred from the current architecture, and should be used to | |
673 | limit the length of outgoing packets. */ | |
674 | static long | |
675 | get_remote_packet_size (void) | |
676 | { | |
be2a5f71 | 677 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
678 | struct remote_arch_state *rsa = get_remote_arch_state (); |
679 | ||
be2a5f71 DJ |
680 | if (rs->explicit_packet_size) |
681 | return rs->explicit_packet_size; | |
682 | ||
ea9c271d | 683 | return rsa->remote_packet_size; |
d01949b6 AC |
684 | } |
685 | ||
ad10f812 | 686 | static struct packet_reg * |
ea9c271d | 687 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 688 | { |
f5656ead | 689 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
b323314b AC |
690 | return NULL; |
691 | else | |
ad10f812 | 692 | { |
ea9c271d | 693 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 694 | |
b323314b AC |
695 | gdb_assert (r->regnum == regnum); |
696 | return r; | |
ad10f812 | 697 | } |
ad10f812 AC |
698 | } |
699 | ||
700 | static struct packet_reg * | |
ea9c271d | 701 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 702 | { |
b323314b | 703 | int i; |
a744cf53 | 704 | |
f5656ead | 705 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
ad10f812 | 706 | { |
ea9c271d | 707 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 708 | |
b323314b AC |
709 | if (r->pnum == pnum) |
710 | return r; | |
ad10f812 AC |
711 | } |
712 | return NULL; | |
d01949b6 AC |
713 | } |
714 | ||
3c3bea1c GS |
715 | /* FIXME: graces/2002-08-08: These variables should eventually be |
716 | bound to an instance of the target object (as in gdbarch-tdep()), | |
717 | when such a thing exists. */ | |
718 | ||
719 | /* This is set to the data address of the access causing the target | |
720 | to stop for a watchpoint. */ | |
721 | static CORE_ADDR remote_watch_data_address; | |
722 | ||
94e08568 | 723 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
724 | static int remote_stopped_by_watchpoint_p; |
725 | ||
c906108c SS |
726 | static struct target_ops remote_ops; |
727 | ||
728 | static struct target_ops extended_remote_ops; | |
729 | ||
6426a772 JM |
730 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
731 | ``forever'' still use the normal timeout mechanism. This is | |
732 | currently used by the ASYNC code to guarentee that target reads | |
733 | during the initial connect always time-out. Once getpkt has been | |
734 | modified to return a timeout indication and, in turn | |
735 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 736 | this can go away. */ |
6426a772 JM |
737 | static int wait_forever_enabled_p = 1; |
738 | ||
9a7071a8 JB |
739 | /* Allow the user to specify what sequence to send to the remote |
740 | when he requests a program interruption: Although ^C is usually | |
741 | what remote systems expect (this is the default, here), it is | |
742 | sometimes preferable to send a break. On other systems such | |
743 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
744 | is required in order to interrupt the execution. */ | |
745 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
746 | const char interrupt_sequence_break[] = "BREAK"; | |
747 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 748 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
749 | { |
750 | interrupt_sequence_control_c, | |
751 | interrupt_sequence_break, | |
752 | interrupt_sequence_break_g, | |
753 | NULL | |
754 | }; | |
755 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
756 | ||
757 | static void | |
758 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
759 | struct cmd_list_element *c, | |
760 | const char *value) | |
761 | { | |
762 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
763 | fprintf_filtered (file, | |
764 | _("Send the ASCII ETX character (Ctrl-c) " | |
765 | "to the remote target to interrupt the " | |
766 | "execution of the program.\n")); | |
767 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
768 | fprintf_filtered (file, | |
769 | _("send a break signal to the remote target " | |
770 | "to interrupt the execution of the program.\n")); | |
771 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
772 | fprintf_filtered (file, | |
773 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
774 | "the remote target to interrupt the execution " | |
775 | "of Linux kernel.\n")); | |
776 | else | |
777 | internal_error (__FILE__, __LINE__, | |
778 | _("Invalid value for interrupt_sequence_mode: %s."), | |
779 | interrupt_sequence_mode); | |
780 | } | |
6426a772 | 781 | |
9a7071a8 JB |
782 | /* This boolean variable specifies whether interrupt_sequence is sent |
783 | to the remote target when gdb connects to it. | |
784 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
785 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
786 | static int interrupt_on_connect = 0; | |
c906108c | 787 | |
9a7071a8 JB |
788 | /* This variable is used to implement the "set/show remotebreak" commands. |
789 | Since these commands are now deprecated in favor of "set/show remote | |
790 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
791 | static int remote_break; |
792 | ||
9a7071a8 JB |
793 | static void |
794 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
795 | { | |
796 | if (remote_break) | |
797 | interrupt_sequence_mode = interrupt_sequence_break; | |
798 | else | |
799 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
800 | } | |
801 | ||
802 | static void | |
803 | show_remotebreak (struct ui_file *file, int from_tty, | |
804 | struct cmd_list_element *c, | |
805 | const char *value) | |
806 | { | |
807 | } | |
808 | ||
c906108c SS |
809 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
810 | remote_open knows that we don't have a file open when the program | |
811 | starts. */ | |
819cc324 | 812 | static struct serial *remote_desc = NULL; |
c906108c | 813 | |
c906108c SS |
814 | /* This variable sets the number of bits in an address that are to be |
815 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 816 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
817 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
818 | initial implementation of remote.c restricted the address sent in | |
819 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
820 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
821 | address was never sent. Since fixing this bug may cause a break in | |
822 | some remote targets this variable is principly provided to | |
23860348 | 823 | facilitate backward compatibility. */ |
c906108c | 824 | |
883b9c6c | 825 | static unsigned int remote_address_size; |
c906108c | 826 | |
75c99385 PA |
827 | /* Temporary to track who currently owns the terminal. See |
828 | remote_terminal_* for more details. */ | |
6426a772 JM |
829 | |
830 | static int remote_async_terminal_ours_p; | |
831 | ||
2d717e4f DJ |
832 | /* The executable file to use for "run" on the remote side. */ |
833 | ||
834 | static char *remote_exec_file = ""; | |
835 | ||
11cf8741 | 836 | \f |
11cf8741 | 837 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
838 | memory read/write packet. MIN (rsa->remote_packet_size, |
839 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 840 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
841 | (speed up transfers). The variables ``preferred_*'' (the user |
842 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 843 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
844 | |
845 | struct memory_packet_config | |
846 | { | |
847 | char *name; | |
848 | long size; | |
849 | int fixed_p; | |
850 | }; | |
851 | ||
852 | /* Compute the current size of a read/write packet. Since this makes | |
853 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
854 | ||
855 | static long | |
856 | get_memory_packet_size (struct memory_packet_config *config) | |
857 | { | |
d01949b6 | 858 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
859 | struct remote_arch_state *rsa = get_remote_arch_state (); |
860 | ||
11cf8741 JM |
861 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
862 | law?) that some hosts don't cope very well with large alloca() | |
863 | calls. Eventually the alloca() code will be replaced by calls to | |
864 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 865 | be lifted or removed. */ |
11cf8741 JM |
866 | #ifndef MAX_REMOTE_PACKET_SIZE |
867 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
868 | #endif | |
3de11b2e | 869 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 870 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 871 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
872 | #endif |
873 | long what_they_get; | |
874 | if (config->fixed_p) | |
875 | { | |
876 | if (config->size <= 0) | |
877 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
878 | else | |
879 | what_they_get = config->size; | |
880 | } | |
881 | else | |
882 | { | |
ea9c271d | 883 | what_they_get = get_remote_packet_size (); |
23860348 | 884 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
885 | if (config->size > 0 |
886 | && what_they_get > config->size) | |
887 | what_they_get = config->size; | |
be2a5f71 DJ |
888 | |
889 | /* Limit it to the size of the targets ``g'' response unless we have | |
890 | permission from the stub to use a larger packet size. */ | |
891 | if (rs->explicit_packet_size == 0 | |
892 | && rsa->actual_register_packet_size > 0 | |
893 | && what_they_get > rsa->actual_register_packet_size) | |
894 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
895 | } |
896 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
897 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
898 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
899 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
900 | |
901 | /* Make sure there is room in the global buffer for this packet | |
902 | (including its trailing NUL byte). */ | |
903 | if (rs->buf_size < what_they_get + 1) | |
904 | { | |
905 | rs->buf_size = 2 * what_they_get; | |
906 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
907 | } | |
908 | ||
11cf8741 JM |
909 | return what_they_get; |
910 | } | |
911 | ||
0df8b418 | 912 | /* Update the size of a read/write packet. If they user wants |
23860348 | 913 | something really big then do a sanity check. */ |
11cf8741 JM |
914 | |
915 | static void | |
916 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
917 | { | |
918 | int fixed_p = config->fixed_p; | |
919 | long size = config->size; | |
a744cf53 | 920 | |
11cf8741 | 921 | if (args == NULL) |
8a3fe4f8 | 922 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
923 | else if (strcmp (args, "hard") == 0 |
924 | || strcmp (args, "fixed") == 0) | |
925 | fixed_p = 1; | |
926 | else if (strcmp (args, "soft") == 0 | |
927 | || strcmp (args, "limit") == 0) | |
928 | fixed_p = 0; | |
929 | else | |
930 | { | |
931 | char *end; | |
a744cf53 | 932 | |
11cf8741 JM |
933 | size = strtoul (args, &end, 0); |
934 | if (args == end) | |
8a3fe4f8 | 935 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
936 | #if 0 |
937 | /* Instead of explicitly capping the size of a packet to | |
938 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
939 | instead allowed to set the size to something arbitrarily | |
23860348 | 940 | large. */ |
11cf8741 | 941 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 942 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
943 | #endif |
944 | } | |
23860348 | 945 | /* Extra checks? */ |
11cf8741 JM |
946 | if (fixed_p && !config->fixed_p) |
947 | { | |
e2e0b3e5 AC |
948 | if (! query (_("The target may not be able to correctly handle a %s\n" |
949 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 950 | config->name, size)) |
8a3fe4f8 | 951 | error (_("Packet size not changed.")); |
11cf8741 | 952 | } |
23860348 | 953 | /* Update the config. */ |
11cf8741 JM |
954 | config->fixed_p = fixed_p; |
955 | config->size = size; | |
956 | } | |
957 | ||
958 | static void | |
959 | show_memory_packet_size (struct memory_packet_config *config) | |
960 | { | |
a3f17187 | 961 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 962 | if (config->fixed_p) |
a3f17187 | 963 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
964 | get_memory_packet_size (config)); |
965 | else | |
a3f17187 | 966 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
967 | get_memory_packet_size (config)); |
968 | } | |
969 | ||
970 | static struct memory_packet_config memory_write_packet_config = | |
971 | { | |
972 | "memory-write-packet-size", | |
973 | }; | |
974 | ||
975 | static void | |
976 | set_memory_write_packet_size (char *args, int from_tty) | |
977 | { | |
978 | set_memory_packet_size (args, &memory_write_packet_config); | |
979 | } | |
980 | ||
981 | static void | |
982 | show_memory_write_packet_size (char *args, int from_tty) | |
983 | { | |
984 | show_memory_packet_size (&memory_write_packet_config); | |
985 | } | |
986 | ||
987 | static long | |
988 | get_memory_write_packet_size (void) | |
989 | { | |
990 | return get_memory_packet_size (&memory_write_packet_config); | |
991 | } | |
992 | ||
993 | static struct memory_packet_config memory_read_packet_config = | |
994 | { | |
995 | "memory-read-packet-size", | |
996 | }; | |
997 | ||
998 | static void | |
999 | set_memory_read_packet_size (char *args, int from_tty) | |
1000 | { | |
1001 | set_memory_packet_size (args, &memory_read_packet_config); | |
1002 | } | |
1003 | ||
1004 | static void | |
1005 | show_memory_read_packet_size (char *args, int from_tty) | |
1006 | { | |
1007 | show_memory_packet_size (&memory_read_packet_config); | |
1008 | } | |
1009 | ||
1010 | static long | |
1011 | get_memory_read_packet_size (void) | |
1012 | { | |
1013 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1014 | |
11cf8741 JM |
1015 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1016 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1017 | increased beyond this. */ |
1018 | if (size > get_remote_packet_size ()) | |
1019 | size = get_remote_packet_size (); | |
11cf8741 JM |
1020 | return size; |
1021 | } | |
1022 | ||
11cf8741 | 1023 | \f |
5a2468f5 | 1024 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1025 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1026 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1027 | |
1028 | enum packet_support | |
1029 | { | |
1030 | PACKET_SUPPORT_UNKNOWN = 0, | |
1031 | PACKET_ENABLE, | |
1032 | PACKET_DISABLE | |
1033 | }; | |
1034 | ||
5a2468f5 JM |
1035 | struct packet_config |
1036 | { | |
bb572ddd DJ |
1037 | const char *name; |
1038 | const char *title; | |
7f19b9a2 | 1039 | enum auto_boolean detect; |
5a2468f5 JM |
1040 | enum packet_support support; |
1041 | }; | |
1042 | ||
d471ea57 | 1043 | /* Analyze a packet's return value and update the packet config |
23860348 | 1044 | accordingly. */ |
d471ea57 AC |
1045 | |
1046 | enum packet_result | |
1047 | { | |
1048 | PACKET_ERROR, | |
1049 | PACKET_OK, | |
1050 | PACKET_UNKNOWN | |
1051 | }; | |
1052 | ||
5a2468f5 | 1053 | static void |
d471ea57 | 1054 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1055 | { |
d471ea57 AC |
1056 | switch (config->detect) |
1057 | { | |
7f19b9a2 | 1058 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1059 | config->support = PACKET_ENABLE; |
1060 | break; | |
7f19b9a2 | 1061 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1062 | config->support = PACKET_DISABLE; |
1063 | break; | |
7f19b9a2 | 1064 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1065 | config->support = PACKET_SUPPORT_UNKNOWN; |
1066 | break; | |
1067 | } | |
5a2468f5 JM |
1068 | } |
1069 | ||
1070 | static void | |
fba45db2 | 1071 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1072 | { |
1073 | char *support = "internal-error"; | |
a744cf53 | 1074 | |
5a2468f5 JM |
1075 | switch (config->support) |
1076 | { | |
1077 | case PACKET_ENABLE: | |
1078 | support = "enabled"; | |
1079 | break; | |
1080 | case PACKET_DISABLE: | |
1081 | support = "disabled"; | |
1082 | break; | |
1083 | case PACKET_SUPPORT_UNKNOWN: | |
1084 | support = "unknown"; | |
1085 | break; | |
1086 | } | |
1087 | switch (config->detect) | |
1088 | { | |
7f19b9a2 | 1089 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1090 | printf_filtered (_("Support for the `%s' packet " |
1091 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1092 | config->name, support); |
5a2468f5 | 1093 | break; |
7f19b9a2 AC |
1094 | case AUTO_BOOLEAN_TRUE: |
1095 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1096 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1097 | config->name, support); | |
8e248173 | 1098 | break; |
5a2468f5 JM |
1099 | } |
1100 | } | |
1101 | ||
1102 | static void | |
bb572ddd DJ |
1103 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1104 | const char *title, int legacy) | |
d471ea57 | 1105 | { |
5a2468f5 JM |
1106 | char *set_doc; |
1107 | char *show_doc; | |
d471ea57 | 1108 | char *cmd_name; |
3ed07be4 | 1109 | |
5a2468f5 JM |
1110 | config->name = name; |
1111 | config->title = title; | |
7f19b9a2 | 1112 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1113 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1114 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1115 | name, title); | |
3e43a32a MS |
1116 | show_doc = xstrprintf ("Show current use of remote " |
1117 | "protocol `%s' (%s) packet", | |
b435e160 | 1118 | name, title); |
d471ea57 | 1119 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1120 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1121 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1122 | &config->detect, set_doc, |
1123 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1124 | set_remote_protocol_packet_cmd, |
1125 | show_remote_protocol_packet_cmd, | |
1126 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1127 | /* The command code copies the documentation strings. */ |
1128 | xfree (set_doc); | |
1129 | xfree (show_doc); | |
23860348 | 1130 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1131 | if (legacy) |
1132 | { | |
1133 | char *legacy_name; | |
a744cf53 | 1134 | |
b435e160 | 1135 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1136 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1137 | &remote_set_cmdlist); |
d471ea57 | 1138 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1139 | &remote_show_cmdlist); |
d471ea57 | 1140 | } |
5a2468f5 JM |
1141 | } |
1142 | ||
d471ea57 | 1143 | static enum packet_result |
a76d924d | 1144 | packet_check_result (const char *buf) |
5a2468f5 | 1145 | { |
d471ea57 | 1146 | if (buf[0] != '\0') |
5a2468f5 | 1147 | { |
d471ea57 | 1148 | /* The stub recognized the packet request. Check that the |
23860348 | 1149 | operation succeeded. */ |
a76d924d DJ |
1150 | if (buf[0] == 'E' |
1151 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1152 | && buf[3] == '\0') | |
1153 | /* "Enn" - definitly an error. */ | |
1154 | return PACKET_ERROR; | |
1155 | ||
1156 | /* Always treat "E." as an error. This will be used for | |
1157 | more verbose error messages, such as E.memtypes. */ | |
1158 | if (buf[0] == 'E' && buf[1] == '.') | |
1159 | return PACKET_ERROR; | |
1160 | ||
1161 | /* The packet may or may not be OK. Just assume it is. */ | |
1162 | return PACKET_OK; | |
1163 | } | |
1164 | else | |
1165 | /* The stub does not support the packet. */ | |
1166 | return PACKET_UNKNOWN; | |
1167 | } | |
1168 | ||
1169 | static enum packet_result | |
1170 | packet_ok (const char *buf, struct packet_config *config) | |
1171 | { | |
1172 | enum packet_result result; | |
1173 | ||
1174 | result = packet_check_result (buf); | |
1175 | switch (result) | |
1176 | { | |
1177 | case PACKET_OK: | |
1178 | case PACKET_ERROR: | |
1179 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1180 | switch (config->support) |
1181 | { | |
1182 | case PACKET_SUPPORT_UNKNOWN: | |
1183 | if (remote_debug) | |
1184 | fprintf_unfiltered (gdb_stdlog, | |
1185 | "Packet %s (%s) is supported\n", | |
1186 | config->name, config->title); | |
1187 | config->support = PACKET_ENABLE; | |
1188 | break; | |
1189 | case PACKET_DISABLE: | |
8e65ff28 | 1190 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1191 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1192 | break; |
1193 | case PACKET_ENABLE: | |
1194 | break; | |
1195 | } | |
a76d924d DJ |
1196 | break; |
1197 | case PACKET_UNKNOWN: | |
23860348 | 1198 | /* The stub does not support the packet. */ |
d471ea57 AC |
1199 | switch (config->support) |
1200 | { | |
1201 | case PACKET_ENABLE: | |
7f19b9a2 | 1202 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1203 | /* If the stub previously indicated that the packet was |
23860348 | 1204 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1205 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1206 | config->name, config->title); |
1207 | else | |
23860348 | 1208 | /* The user set it wrong. */ |
8a3fe4f8 | 1209 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1210 | config->name, config->title); |
1211 | break; | |
1212 | case PACKET_SUPPORT_UNKNOWN: | |
1213 | if (remote_debug) | |
1214 | fprintf_unfiltered (gdb_stdlog, | |
1215 | "Packet %s (%s) is NOT supported\n", | |
1216 | config->name, config->title); | |
1217 | config->support = PACKET_DISABLE; | |
1218 | break; | |
1219 | case PACKET_DISABLE: | |
1220 | break; | |
1221 | } | |
a76d924d | 1222 | break; |
5a2468f5 | 1223 | } |
a76d924d DJ |
1224 | |
1225 | return result; | |
5a2468f5 JM |
1226 | } |
1227 | ||
444abaca DJ |
1228 | enum { |
1229 | PACKET_vCont = 0, | |
1230 | PACKET_X, | |
1231 | PACKET_qSymbol, | |
1232 | PACKET_P, | |
1233 | PACKET_p, | |
1234 | PACKET_Z0, | |
1235 | PACKET_Z1, | |
1236 | PACKET_Z2, | |
1237 | PACKET_Z3, | |
1238 | PACKET_Z4, | |
a6b151f1 DJ |
1239 | PACKET_vFile_open, |
1240 | PACKET_vFile_pread, | |
1241 | PACKET_vFile_pwrite, | |
1242 | PACKET_vFile_close, | |
1243 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1244 | PACKET_vFile_readlink, |
0876f84a | 1245 | PACKET_qXfer_auxv, |
23181151 | 1246 | PACKET_qXfer_features, |
cfa9d6d9 | 1247 | PACKET_qXfer_libraries, |
2268b414 | 1248 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1249 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1250 | PACKET_qXfer_spu_read, |
1251 | PACKET_qXfer_spu_write, | |
07e059b5 | 1252 | PACKET_qXfer_osdata, |
dc146f7c | 1253 | PACKET_qXfer_threads, |
0fb4aa4b | 1254 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1255 | PACKET_qXfer_traceframe_info, |
169081d0 | 1256 | PACKET_qXfer_uib, |
711e434b | 1257 | PACKET_qGetTIBAddr, |
444abaca | 1258 | PACKET_qGetTLSAddr, |
be2a5f71 | 1259 | PACKET_qSupported, |
89be2091 | 1260 | PACKET_QPassSignals, |
9b224c5e | 1261 | PACKET_QProgramSignals, |
08388c79 | 1262 | PACKET_qSearch_memory, |
2d717e4f DJ |
1263 | PACKET_vAttach, |
1264 | PACKET_vRun, | |
a6f3e723 | 1265 | PACKET_QStartNoAckMode, |
82f73884 | 1266 | PACKET_vKill, |
4aa995e1 PA |
1267 | PACKET_qXfer_siginfo_read, |
1268 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1269 | PACKET_qAttached, |
782b2b07 | 1270 | PACKET_ConditionalTracepoints, |
3788aec7 | 1271 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1272 | PACKET_BreakpointCommands, |
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, |
d1feda86 | 1282 | PACKET_QAgent, |
444abaca DJ |
1283 | PACKET_MAX |
1284 | }; | |
506fb367 | 1285 | |
444abaca | 1286 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1287 | |
1288 | static void | |
444abaca DJ |
1289 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1290 | struct cmd_list_element *c) | |
dc8acb97 | 1291 | { |
444abaca | 1292 | struct packet_config *packet; |
dc8acb97 | 1293 | |
444abaca DJ |
1294 | for (packet = remote_protocol_packets; |
1295 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1296 | packet++) | |
1297 | { | |
1298 | if (&packet->detect == c->var) | |
1299 | { | |
1300 | update_packet_config (packet); | |
1301 | return; | |
1302 | } | |
1303 | } | |
9b20d036 | 1304 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1305 | c->name); |
dc8acb97 MS |
1306 | } |
1307 | ||
5a2468f5 | 1308 | static void |
444abaca DJ |
1309 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1310 | struct cmd_list_element *c, | |
1311 | const char *value) | |
5a2468f5 | 1312 | { |
444abaca | 1313 | struct packet_config *packet; |
5a2468f5 | 1314 | |
444abaca DJ |
1315 | for (packet = remote_protocol_packets; |
1316 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1317 | packet++) | |
1318 | { | |
1319 | if (&packet->detect == c->var) | |
1320 | { | |
1321 | show_packet_config_cmd (packet); | |
1322 | return; | |
1323 | } | |
1324 | } | |
9b20d036 | 1325 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1326 | c->name); |
5a2468f5 JM |
1327 | } |
1328 | ||
d471ea57 AC |
1329 | /* Should we try one of the 'Z' requests? */ |
1330 | ||
1331 | enum Z_packet_type | |
1332 | { | |
1333 | Z_PACKET_SOFTWARE_BP, | |
1334 | Z_PACKET_HARDWARE_BP, | |
1335 | Z_PACKET_WRITE_WP, | |
1336 | Z_PACKET_READ_WP, | |
1337 | Z_PACKET_ACCESS_WP, | |
1338 | NR_Z_PACKET_TYPES | |
1339 | }; | |
96baa820 | 1340 | |
d471ea57 | 1341 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1342 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1343 | |
7f19b9a2 | 1344 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1345 | |
1346 | static void | |
fba45db2 KB |
1347 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1348 | struct cmd_list_element *c) | |
96baa820 | 1349 | { |
d471ea57 | 1350 | int i; |
a744cf53 | 1351 | |
d471ea57 AC |
1352 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1353 | { | |
444abaca DJ |
1354 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1355 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1356 | } |
96baa820 JM |
1357 | } |
1358 | ||
1359 | static void | |
08546159 AC |
1360 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1361 | struct cmd_list_element *c, | |
1362 | const char *value) | |
96baa820 | 1363 | { |
d471ea57 | 1364 | int i; |
a744cf53 | 1365 | |
d471ea57 AC |
1366 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1367 | { | |
444abaca | 1368 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1369 | } |
96baa820 JM |
1370 | } |
1371 | ||
9d1f7ab2 MS |
1372 | /* Should we try the 'ThreadInfo' query packet? |
1373 | ||
1374 | This variable (NOT available to the user: auto-detect only!) | |
1375 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1376 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1377 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1378 | and set to false when the target fails to recognize it). */ |
1379 | ||
1380 | static int use_threadinfo_query; | |
1381 | static int use_threadextra_query; | |
1382 | ||
23860348 | 1383 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1384 | static struct async_signal_handler *sigint_remote_twice_token; |
1385 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1386 | |
74531fed PA |
1387 | \f |
1388 | /* Asynchronous signal handle registered as event loop source for | |
1389 | when we have pending events ready to be passed to the core. */ | |
1390 | ||
1391 | static struct async_event_handler *remote_async_inferior_event_token; | |
1392 | ||
c906108c SS |
1393 | \f |
1394 | ||
79d7f229 PA |
1395 | static ptid_t magic_null_ptid; |
1396 | static ptid_t not_sent_ptid; | |
1397 | static ptid_t any_thread_ptid; | |
1398 | ||
1399 | /* These are the threads which we last sent to the remote system. The | |
1400 | TID member will be -1 for all or -2 for not sent yet. */ | |
1401 | ||
1402 | static ptid_t general_thread; | |
1403 | static ptid_t continue_thread; | |
c5aa993b | 1404 | |
a7c3d162 | 1405 | /* This is the traceframe which we last selected on the remote system. |
e6e4e701 PA |
1406 | It will be -1 if no traceframe is selected. */ |
1407 | static int remote_traceframe_number = -1; | |
1408 | ||
0b16c5cf PA |
1409 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1410 | detach instead of killing it when bailing out). */ | |
1411 | ||
1412 | static int | |
1413 | remote_query_attached (int pid) | |
1414 | { | |
1415 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1416 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1417 | |
1418 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1419 | return 0; | |
1420 | ||
1421 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1422 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1423 | else |
bba74b36 | 1424 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1425 | |
1426 | putpkt (rs->buf); | |
1427 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1428 | ||
1429 | switch (packet_ok (rs->buf, | |
1554e9be | 1430 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1431 | { |
1432 | case PACKET_OK: | |
1433 | if (strcmp (rs->buf, "1") == 0) | |
1434 | return 1; | |
1435 | break; | |
1436 | case PACKET_ERROR: | |
1437 | warning (_("Remote failure reply: %s"), rs->buf); | |
1438 | break; | |
1439 | case PACKET_UNKNOWN: | |
1440 | break; | |
1441 | } | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
49c62f2e PA |
1446 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1447 | has been invented by GDB, instead of reported by the target. Since | |
1448 | we can be connected to a remote system before before knowing about | |
1449 | any inferior, mark the target with execution when we find the first | |
1450 | inferior. If ATTACHED is 1, then we had just attached to this | |
1451 | inferior. If it is 0, then we just created this inferior. If it | |
1452 | is -1, then try querying the remote stub to find out if it had | |
1453 | attached to the inferior or not. */ | |
1941c569 PA |
1454 | |
1455 | static struct inferior * | |
49c62f2e | 1456 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1457 | { |
1941c569 PA |
1458 | struct inferior *inf; |
1459 | ||
0b16c5cf PA |
1460 | /* Check whether this process we're learning about is to be |
1461 | considered attached, or if is to be considered to have been | |
1462 | spawned by the stub. */ | |
1463 | if (attached == -1) | |
1464 | attached = remote_query_attached (pid); | |
1465 | ||
f5656ead | 1466 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
1467 | { |
1468 | /* If the target shares code across all inferiors, then every | |
1469 | attach adds a new inferior. */ | |
1470 | inf = add_inferior (pid); | |
1471 | ||
1472 | /* ... and every inferior is bound to the same program space. | |
1473 | However, each inferior may still have its own address | |
1474 | space. */ | |
1475 | inf->aspace = maybe_new_address_space (); | |
1476 | inf->pspace = current_program_space; | |
1477 | } | |
1478 | else | |
1479 | { | |
1480 | /* In the traditional debugging scenario, there's a 1-1 match | |
1481 | between program/address spaces. We simply bind the inferior | |
1482 | to the program space's address space. */ | |
1483 | inf = current_inferior (); | |
1484 | inferior_appeared (inf, pid); | |
1485 | } | |
1941c569 | 1486 | |
0b16c5cf | 1487 | inf->attach_flag = attached; |
49c62f2e | 1488 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1489 | |
1941c569 PA |
1490 | return inf; |
1491 | } | |
1492 | ||
1493 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1494 | according to RUNNING. */ | |
1495 | ||
c906108c | 1496 | static void |
1941c569 | 1497 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1498 | { |
1941c569 PA |
1499 | add_thread (ptid); |
1500 | ||
1501 | set_executing (ptid, running); | |
1502 | set_running (ptid, running); | |
1503 | } | |
1504 | ||
1505 | /* Come here when we learn about a thread id from the remote target. | |
1506 | It may be the first time we hear about such thread, so take the | |
1507 | opportunity to add it to GDB's thread list. In case this is the | |
1508 | first time we're noticing its corresponding inferior, add it to | |
1509 | GDB's inferior list as well. */ | |
1510 | ||
1511 | static void | |
1512 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1513 | { | |
c906108c SS |
1514 | /* If this is a new thread, add it to GDB's thread list. |
1515 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1516 | |
1517 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1518 | { | |
1519 | /* We're seeing an event on a thread id we knew had exited. | |
1520 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1521 | remote_add_thread (currthread, running); |
82f73884 PA |
1522 | return; |
1523 | } | |
1524 | ||
79d7f229 | 1525 | if (!in_thread_list (currthread)) |
c0a2216e | 1526 | { |
1941c569 | 1527 | struct inferior *inf = NULL; |
bad34192 | 1528 | int pid = ptid_get_pid (currthread); |
1941c569 | 1529 | |
bad34192 PA |
1530 | if (ptid_is_pid (inferior_ptid) |
1531 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1532 | { |
1533 | /* inferior_ptid has no thread member yet. This can happen | |
1534 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1535 | stub doesn't support qC. This is the first stop reported | |
1536 | after an attach, so this is the main thread. Update the | |
1537 | ptid in the thread list. */ | |
bad34192 PA |
1538 | if (in_thread_list (pid_to_ptid (pid))) |
1539 | thread_change_ptid (inferior_ptid, currthread); | |
1540 | else | |
1541 | { | |
1542 | remote_add_thread (currthread, running); | |
1543 | inferior_ptid = currthread; | |
1544 | } | |
dc146f7c | 1545 | return; |
c0a2216e | 1546 | } |
82f73884 PA |
1547 | |
1548 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1549 | { |
1550 | /* inferior_ptid is not set yet. This can happen with the | |
1551 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1552 | doesn't support qC. This is the first stop reported | |
1553 | after an attach, so this is the main thread. Update the | |
1554 | ptid in the thread list. */ | |
dc146f7c | 1555 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1556 | return; |
c0a2216e | 1557 | } |
82f73884 | 1558 | |
29c87f7f PA |
1559 | /* When connecting to a target remote, or to a target |
1560 | extended-remote which already was debugging an inferior, we | |
1561 | may not know about it yet. Add it before adding its child | |
1562 | thread, so notifications are emitted in a sensible order. */ | |
1563 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1564 | { |
1565 | struct remote_state *rs = get_remote_state (); | |
1566 | int fake_pid_p = !remote_multi_process_p (rs); | |
1567 | ||
1568 | inf = remote_add_inferior (fake_pid_p, | |
1569 | ptid_get_pid (currthread), -1); | |
1570 | } | |
29c87f7f | 1571 | |
82f73884 | 1572 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1573 | remote_add_thread (currthread, running); |
1574 | ||
1575 | /* If we found a new inferior, let the common code do whatever | |
1576 | it needs to with it (e.g., read shared libraries, insert | |
1577 | breakpoints). */ | |
1578 | if (inf != NULL) | |
1579 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1580 | } |
c906108c SS |
1581 | } |
1582 | ||
dc146f7c VP |
1583 | /* Return the private thread data, creating it if necessary. */ |
1584 | ||
70221824 | 1585 | static struct private_thread_info * |
dc146f7c VP |
1586 | demand_private_info (ptid_t ptid) |
1587 | { | |
1588 | struct thread_info *info = find_thread_ptid (ptid); | |
1589 | ||
1590 | gdb_assert (info); | |
1591 | ||
1592 | if (!info->private) | |
1593 | { | |
1594 | info->private = xmalloc (sizeof (*(info->private))); | |
1595 | info->private_dtor = free_private_thread_info; | |
1596 | info->private->core = -1; | |
1597 | info->private->extra = 0; | |
1598 | } | |
1599 | ||
1600 | return info->private; | |
1601 | } | |
1602 | ||
74531fed PA |
1603 | /* Call this function as a result of |
1604 | 1) A halt indication (T packet) containing a thread id | |
1605 | 2) A direct query of currthread | |
0df8b418 | 1606 | 3) Successful execution of set thread */ |
74531fed PA |
1607 | |
1608 | static void | |
1609 | record_currthread (ptid_t currthread) | |
1610 | { | |
1611 | general_thread = currthread; | |
74531fed PA |
1612 | } |
1613 | ||
89be2091 DJ |
1614 | static char *last_pass_packet; |
1615 | ||
1616 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1617 | it can simply pass through to the inferior without reporting. */ | |
1618 | ||
1619 | static void | |
2455069d | 1620 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1621 | { |
1622 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1623 | { | |
1624 | char *pass_packet, *p; | |
89be2091 DJ |
1625 | int count = 0, i; |
1626 | ||
1627 | gdb_assert (numsigs < 256); | |
1628 | for (i = 0; i < numsigs; i++) | |
1629 | { | |
2455069d | 1630 | if (pass_signals[i]) |
89be2091 DJ |
1631 | count++; |
1632 | } | |
1633 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1634 | strcpy (pass_packet, "QPassSignals:"); | |
1635 | p = pass_packet + strlen (pass_packet); | |
1636 | for (i = 0; i < numsigs; i++) | |
1637 | { | |
2455069d | 1638 | if (pass_signals[i]) |
89be2091 DJ |
1639 | { |
1640 | if (i >= 16) | |
1641 | *p++ = tohex (i >> 4); | |
1642 | *p++ = tohex (i & 15); | |
1643 | if (count) | |
1644 | *p++ = ';'; | |
1645 | else | |
1646 | break; | |
1647 | count--; | |
1648 | } | |
1649 | } | |
1650 | *p = 0; | |
1651 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1652 | { | |
1653 | struct remote_state *rs = get_remote_state (); | |
1654 | char *buf = rs->buf; | |
1655 | ||
1656 | putpkt (pass_packet); | |
1657 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1658 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1659 | if (last_pass_packet) | |
1660 | xfree (last_pass_packet); | |
1661 | last_pass_packet = pass_packet; | |
1662 | } | |
1663 | else | |
1664 | xfree (pass_packet); | |
1665 | } | |
1666 | } | |
1667 | ||
9b224c5e PA |
1668 | /* The last QProgramSignals packet sent to the target. We bypass |
1669 | sending a new program signals list down to the target if the new | |
1670 | packet is exactly the same as the last we sent. IOW, we only let | |
1671 | the target know about program signals list changes. */ | |
1672 | ||
1673 | static char *last_program_signals_packet; | |
1674 | ||
1675 | /* If 'QProgramSignals' is supported, tell the remote stub what | |
1676 | signals it should pass through to the inferior when detaching. */ | |
1677 | ||
1678 | static void | |
1679 | remote_program_signals (int numsigs, unsigned char *signals) | |
1680 | { | |
1681 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1682 | { | |
1683 | char *packet, *p; | |
1684 | int count = 0, i; | |
1685 | ||
1686 | gdb_assert (numsigs < 256); | |
1687 | for (i = 0; i < numsigs; i++) | |
1688 | { | |
1689 | if (signals[i]) | |
1690 | count++; | |
1691 | } | |
1692 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1693 | strcpy (packet, "QProgramSignals:"); | |
1694 | p = packet + strlen (packet); | |
1695 | for (i = 0; i < numsigs; i++) | |
1696 | { | |
1697 | if (signal_pass_state (i)) | |
1698 | { | |
1699 | if (i >= 16) | |
1700 | *p++ = tohex (i >> 4); | |
1701 | *p++ = tohex (i & 15); | |
1702 | if (count) | |
1703 | *p++ = ';'; | |
1704 | else | |
1705 | break; | |
1706 | count--; | |
1707 | } | |
1708 | } | |
1709 | *p = 0; | |
1710 | if (!last_program_signals_packet | |
1711 | || strcmp (last_program_signals_packet, packet) != 0) | |
1712 | { | |
1713 | struct remote_state *rs = get_remote_state (); | |
1714 | char *buf = rs->buf; | |
1715 | ||
1716 | putpkt (packet); | |
1717 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1718 | packet_ok (buf, &remote_protocol_packets[PACKET_QProgramSignals]); | |
1719 | xfree (last_program_signals_packet); | |
1720 | last_program_signals_packet = packet; | |
1721 | } | |
1722 | else | |
1723 | xfree (packet); | |
1724 | } | |
1725 | } | |
1726 | ||
79d7f229 PA |
1727 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1728 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1729 | thread. If GEN is set, set the general thread, if not, then set | |
1730 | the step/continue thread. */ | |
c906108c | 1731 | static void |
79d7f229 | 1732 | set_thread (struct ptid ptid, int gen) |
c906108c | 1733 | { |
d01949b6 | 1734 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1735 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1736 | char *buf = rs->buf; |
79d7f229 | 1737 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1738 | |
79d7f229 | 1739 | if (ptid_equal (state, ptid)) |
c906108c SS |
1740 | return; |
1741 | ||
79d7f229 PA |
1742 | *buf++ = 'H'; |
1743 | *buf++ = gen ? 'g' : 'c'; | |
1744 | if (ptid_equal (ptid, magic_null_ptid)) | |
1745 | xsnprintf (buf, endbuf - buf, "0"); | |
1746 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1747 | xsnprintf (buf, endbuf - buf, "0"); | |
1748 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1749 | xsnprintf (buf, endbuf - buf, "-1"); | |
1750 | else | |
82f73884 | 1751 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1752 | putpkt (rs->buf); |
6d820c5c | 1753 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1754 | if (gen) |
79d7f229 | 1755 | general_thread = ptid; |
c906108c | 1756 | else |
79d7f229 | 1757 | continue_thread = ptid; |
c906108c | 1758 | } |
79d7f229 PA |
1759 | |
1760 | static void | |
1761 | set_general_thread (struct ptid ptid) | |
1762 | { | |
1763 | set_thread (ptid, 1); | |
1764 | } | |
1765 | ||
1766 | static void | |
1767 | set_continue_thread (struct ptid ptid) | |
1768 | { | |
1769 | set_thread (ptid, 0); | |
1770 | } | |
1771 | ||
3c9c4b83 PA |
1772 | /* Change the remote current process. Which thread within the process |
1773 | ends up selected isn't important, as long as it is the same process | |
1774 | as what INFERIOR_PTID points to. | |
1775 | ||
1776 | This comes from that fact that there is no explicit notion of | |
1777 | "selected process" in the protocol. The selected process for | |
1778 | general operations is the process the selected general thread | |
1779 | belongs to. */ | |
1780 | ||
1781 | static void | |
1782 | set_general_process (void) | |
1783 | { | |
1784 | struct remote_state *rs = get_remote_state (); | |
1785 | ||
1786 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1787 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1788 | return; |
1789 | ||
1790 | /* We only need to change the remote current thread if it's pointing | |
1791 | at some other process. */ | |
1792 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1793 | set_general_thread (inferior_ptid); | |
1794 | } | |
1795 | ||
c906108c | 1796 | \f |
79d7f229 PA |
1797 | /* Return nonzero if the thread PTID is still alive on the remote |
1798 | system. */ | |
c906108c SS |
1799 | |
1800 | static int | |
28439f5e | 1801 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1802 | { |
6d820c5c | 1803 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1804 | char *p, *endp; |
c906108c | 1805 | |
c0a2216e PA |
1806 | if (ptid_equal (ptid, magic_null_ptid)) |
1807 | /* The main thread is always alive. */ | |
1808 | return 1; | |
1809 | ||
1810 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1811 | /* The main thread is always alive. This can happen after a | |
1812 | vAttach, if the remote side doesn't support | |
1813 | multi-threading. */ | |
1814 | return 1; | |
1815 | ||
82f73884 PA |
1816 | p = rs->buf; |
1817 | endp = rs->buf + get_remote_packet_size (); | |
1818 | ||
1819 | *p++ = 'T'; | |
1820 | write_ptid (p, endp, ptid); | |
1821 | ||
2e9f7625 | 1822 | putpkt (rs->buf); |
6d820c5c | 1823 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1824 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1825 | } |
1826 | ||
1827 | /* About these extended threadlist and threadinfo packets. They are | |
1828 | variable length packets but, the fields within them are often fixed | |
1829 | length. They are redundent enough to send over UDP as is the | |
1830 | remote protocol in general. There is a matching unit test module | |
1831 | in libstub. */ | |
1832 | ||
cce74817 JM |
1833 | #define OPAQUETHREADBYTES 8 |
1834 | ||
1835 | /* a 64 bit opaque identifier */ | |
1836 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1837 | ||
23860348 | 1838 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1839 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1840 | changable. */ |
cce74817 JM |
1841 | |
1842 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1843 | Plan to fix this. */ |
cce74817 | 1844 | |
23860348 | 1845 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1846 | |
9d1f7ab2 | 1847 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1848 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1849 | |
1850 | struct gdb_ext_thread_info | |
c5aa993b | 1851 | { |
23860348 | 1852 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1853 | int active; /* Has state interesting to GDB? |
23860348 | 1854 | regs, stack. */ |
2bc416ba | 1855 | char display[256]; /* Brief state display, name, |
cedea757 | 1856 | blocked/suspended. */ |
23860348 | 1857 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1858 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1859 | whatever. */ |
c5aa993b | 1860 | }; |
cce74817 JM |
1861 | |
1862 | /* The volume of remote transfers can be limited by submitting | |
1863 | a mask containing bits specifying the desired information. | |
1864 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1865 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1866 | |
1867 | #define TAG_THREADID 1 | |
1868 | #define TAG_EXISTS 2 | |
1869 | #define TAG_DISPLAY 4 | |
1870 | #define TAG_THREADNAME 8 | |
c5aa993b | 1871 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1872 | |
23860348 | 1873 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1874 | |
b2dd6311 | 1875 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1876 | |
a14ed312 | 1877 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1878 | |
a14ed312 | 1879 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1880 | |
23860348 | 1881 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1882 | |
a14ed312 | 1883 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1884 | |
a14ed312 | 1885 | static char *pack_int (char *buf, int value); |
cce74817 | 1886 | |
a14ed312 | 1887 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1888 | |
a14ed312 | 1889 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1890 | |
23860348 | 1891 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1892 | |
23860348 | 1893 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1894 | |
23860348 | 1895 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1896 | |
23860348 | 1897 | static int threadref_to_int (threadref *ref); |
cce74817 | 1898 | |
23860348 | 1899 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1900 | |
23860348 | 1901 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1902 | |
2bc416ba | 1903 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1904 | threadref *id); |
cce74817 | 1905 | |
a14ed312 | 1906 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1907 | threadref *expectedref, |
a14ed312 KB |
1908 | struct gdb_ext_thread_info |
1909 | *info); | |
cce74817 JM |
1910 | |
1911 | ||
2bc416ba | 1912 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1913 | int fieldset, /*TAG mask */ |
a14ed312 | 1914 | struct gdb_ext_thread_info *info); |
cce74817 | 1915 | |
a14ed312 KB |
1916 | static char *pack_threadlist_request (char *pkt, int startflag, |
1917 | int threadcount, | |
23860348 | 1918 | threadref *nextthread); |
cce74817 | 1919 | |
a14ed312 KB |
1920 | static int parse_threadlist_response (char *pkt, |
1921 | int result_limit, | |
23860348 | 1922 | threadref *original_echo, |
2bc416ba | 1923 | threadref *resultlist, |
23860348 | 1924 | int *doneflag); |
cce74817 | 1925 | |
a14ed312 | 1926 | static int remote_get_threadlist (int startflag, |
23860348 | 1927 | threadref *nextthread, |
a14ed312 KB |
1928 | int result_limit, |
1929 | int *done, | |
2bc416ba | 1930 | int *result_count, |
23860348 | 1931 | threadref *threadlist); |
cce74817 | 1932 | |
23860348 | 1933 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1934 | |
a14ed312 KB |
1935 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1936 | void *context, int looplimit); | |
cce74817 | 1937 | |
23860348 | 1938 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1939 | |
82f73884 PA |
1940 | |
1941 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1942 | buffer we're allowed to write to. Returns | |
1943 | BUF+CHARACTERS_WRITTEN. */ | |
1944 | ||
1945 | static char * | |
1946 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1947 | { | |
1948 | int pid, tid; | |
1949 | struct remote_state *rs = get_remote_state (); | |
1950 | ||
1951 | if (remote_multi_process_p (rs)) | |
1952 | { | |
1953 | pid = ptid_get_pid (ptid); | |
1954 | if (pid < 0) | |
1955 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1956 | else | |
1957 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1958 | } | |
1959 | tid = ptid_get_tid (ptid); | |
1960 | if (tid < 0) | |
1961 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1962 | else | |
1963 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1964 | ||
1965 | return buf; | |
1966 | } | |
1967 | ||
1968 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1969 | passed the last parsed char. Returns null_ptid on error. */ | |
1970 | ||
1971 | static ptid_t | |
1972 | read_ptid (char *buf, char **obuf) | |
1973 | { | |
1974 | char *p = buf; | |
1975 | char *pp; | |
1976 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1977 | |
1978 | if (*p == 'p') | |
1979 | { | |
1980 | /* Multi-process ptid. */ | |
1981 | pp = unpack_varlen_hex (p + 1, &pid); | |
1982 | if (*pp != '.') | |
b37520b6 | 1983 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1984 | |
1985 | p = pp; | |
1986 | pp = unpack_varlen_hex (p + 1, &tid); | |
1987 | if (obuf) | |
1988 | *obuf = pp; | |
1989 | return ptid_build (pid, 0, tid); | |
1990 | } | |
1991 | ||
1992 | /* No multi-process. Just a tid. */ | |
1993 | pp = unpack_varlen_hex (p, &tid); | |
1994 | ||
1995 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1996 | what's in inferior_ptid, unless it's null at this point. If so, |
1997 | then since there's no way to know the pid of the reported | |
1998 | threads, use the magic number. */ | |
1999 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2000 | pid = ptid_get_pid (magic_null_ptid); | |
2001 | else | |
2002 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2003 | |
2004 | if (obuf) | |
2005 | *obuf = pp; | |
2006 | return ptid_build (pid, 0, tid); | |
2007 | } | |
2008 | ||
23860348 | 2009 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2010 | |
2011 | static const char hexchars[] = "0123456789abcdef"; | |
2012 | ||
2013 | static int | |
fba45db2 | 2014 | ishex (int ch, int *val) |
c906108c SS |
2015 | { |
2016 | if ((ch >= 'a') && (ch <= 'f')) | |
2017 | { | |
2018 | *val = ch - 'a' + 10; | |
2019 | return 1; | |
2020 | } | |
2021 | if ((ch >= 'A') && (ch <= 'F')) | |
2022 | { | |
2023 | *val = ch - 'A' + 10; | |
2024 | return 1; | |
2025 | } | |
2026 | if ((ch >= '0') && (ch <= '9')) | |
2027 | { | |
2028 | *val = ch - '0'; | |
2029 | return 1; | |
2030 | } | |
2031 | return 0; | |
2032 | } | |
2033 | ||
2034 | static int | |
fba45db2 | 2035 | stubhex (int ch) |
c906108c SS |
2036 | { |
2037 | if (ch >= 'a' && ch <= 'f') | |
2038 | return ch - 'a' + 10; | |
2039 | if (ch >= '0' && ch <= '9') | |
2040 | return ch - '0'; | |
2041 | if (ch >= 'A' && ch <= 'F') | |
2042 | return ch - 'A' + 10; | |
2043 | return -1; | |
2044 | } | |
2045 | ||
2046 | static int | |
fba45db2 | 2047 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2048 | { |
2049 | int nibble; | |
2050 | int retval = 0; | |
2051 | ||
2052 | while (fieldlength) | |
2053 | { | |
2054 | nibble = stubhex (*buff++); | |
2055 | retval |= nibble; | |
2056 | fieldlength--; | |
2057 | if (fieldlength) | |
2058 | retval = retval << 4; | |
2059 | } | |
2060 | return retval; | |
2061 | } | |
2062 | ||
2063 | char * | |
fba45db2 | 2064 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2065 | ULONGEST *result) |
c906108c SS |
2066 | { |
2067 | int nibble; | |
d49c44d5 | 2068 | ULONGEST retval = 0; |
c906108c SS |
2069 | |
2070 | while (ishex (*buff, &nibble)) | |
2071 | { | |
2072 | buff++; | |
2073 | retval = retval << 4; | |
2074 | retval |= nibble & 0x0f; | |
2075 | } | |
2076 | *result = retval; | |
2077 | return buff; | |
2078 | } | |
2079 | ||
2080 | static char * | |
fba45db2 | 2081 | unpack_nibble (char *buf, int *val) |
c906108c | 2082 | { |
b7589f7d | 2083 | *val = fromhex (*buf++); |
c906108c SS |
2084 | return buf; |
2085 | } | |
2086 | ||
2087 | static char * | |
fba45db2 | 2088 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2089 | { |
2090 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2091 | return buf; | |
2092 | } | |
2093 | ||
2094 | static char * | |
fba45db2 | 2095 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2096 | { |
2097 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2098 | *pkt++ = hexchars[(byte & 0xf)]; | |
2099 | return pkt; | |
2100 | } | |
2101 | ||
2102 | static char * | |
fba45db2 | 2103 | unpack_byte (char *buf, int *value) |
c906108c SS |
2104 | { |
2105 | *value = stub_unpack_int (buf, 2); | |
2106 | return buf + 2; | |
2107 | } | |
2108 | ||
2109 | static char * | |
fba45db2 | 2110 | pack_int (char *buf, int value) |
c906108c SS |
2111 | { |
2112 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2113 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2114 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2115 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2116 | return buf; | |
2117 | } | |
2118 | ||
2119 | static char * | |
fba45db2 | 2120 | unpack_int (char *buf, int *value) |
c906108c SS |
2121 | { |
2122 | *value = stub_unpack_int (buf, 8); | |
2123 | return buf + 8; | |
2124 | } | |
2125 | ||
23860348 | 2126 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2127 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2128 | |
2129 | static char * | |
fba45db2 | 2130 | pack_string (char *pkt, char *string) |
c906108c SS |
2131 | { |
2132 | char ch; | |
2133 | int len; | |
2134 | ||
2135 | len = strlen (string); | |
2136 | if (len > 200) | |
23860348 | 2137 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2138 | pkt = pack_hex_byte (pkt, len); |
2139 | while (len-- > 0) | |
2140 | { | |
2141 | ch = *string++; | |
2142 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2143 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2144 | *pkt++ = ch; |
2145 | } | |
2146 | return pkt; | |
2147 | } | |
2148 | #endif /* 0 (unused) */ | |
2149 | ||
2150 | static char * | |
fba45db2 | 2151 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2152 | { |
2153 | while (length--) | |
2154 | *dest++ = *src++; | |
2155 | *dest = '\0'; | |
2156 | return src; | |
2157 | } | |
2158 | ||
2159 | static char * | |
fba45db2 | 2160 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2161 | { |
2162 | char *limit; | |
2163 | unsigned char *altid; | |
2164 | ||
2165 | altid = (unsigned char *) id; | |
2166 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2167 | while (pkt < limit) | |
2168 | pkt = pack_hex_byte (pkt, *altid++); | |
2169 | return pkt; | |
2170 | } | |
2171 | ||
2172 | ||
2173 | static char * | |
fba45db2 | 2174 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2175 | { |
2176 | char *altref; | |
2177 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2178 | int x, y; | |
2179 | ||
2180 | altref = (char *) id; | |
2181 | ||
2182 | while (inbuf < limit) | |
2183 | { | |
2184 | x = stubhex (*inbuf++); | |
2185 | y = stubhex (*inbuf++); | |
2186 | *altref++ = (x << 4) | y; | |
2187 | } | |
2188 | return inbuf; | |
2189 | } | |
2190 | ||
2191 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2192 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2193 | to use 64bit thread references internally. This is an adapter |
2194 | function. */ | |
2195 | ||
2196 | void | |
fba45db2 | 2197 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2198 | { |
2199 | unsigned char *scan; | |
2200 | ||
2201 | scan = (unsigned char *) id; | |
2202 | { | |
2203 | int i = 4; | |
2204 | while (i--) | |
2205 | *scan++ = 0; | |
2206 | } | |
2207 | *scan++ = (value >> 24) & 0xff; | |
2208 | *scan++ = (value >> 16) & 0xff; | |
2209 | *scan++ = (value >> 8) & 0xff; | |
2210 | *scan++ = (value & 0xff); | |
2211 | } | |
2212 | ||
2213 | static int | |
fba45db2 | 2214 | threadref_to_int (threadref *ref) |
c906108c SS |
2215 | { |
2216 | int i, value = 0; | |
2217 | unsigned char *scan; | |
2218 | ||
cfd77fa1 | 2219 | scan = *ref; |
c906108c SS |
2220 | scan += 4; |
2221 | i = 4; | |
2222 | while (i-- > 0) | |
2223 | value = (value << 8) | ((*scan++) & 0xff); | |
2224 | return value; | |
2225 | } | |
2226 | ||
2227 | static void | |
fba45db2 | 2228 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2229 | { |
2230 | int i; | |
2231 | unsigned char *csrc, *cdest; | |
2232 | ||
2233 | csrc = (unsigned char *) src; | |
2234 | cdest = (unsigned char *) dest; | |
2235 | i = 8; | |
2236 | while (i--) | |
2237 | *cdest++ = *csrc++; | |
2238 | } | |
2239 | ||
2240 | static int | |
fba45db2 | 2241 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2242 | { |
23860348 | 2243 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2244 | #if 0 |
2245 | unsigned char *srcp, *destp; | |
2246 | int i, result; | |
2247 | srcp = (char *) src; | |
2248 | destp = (char *) dest; | |
2249 | ||
2250 | result = 1; | |
2251 | while (i-- > 0) | |
2252 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2253 | return result; | |
2254 | #endif | |
2255 | return 1; | |
2256 | } | |
2257 | ||
2258 | /* | |
c5aa993b JM |
2259 | threadid:1, # always request threadid |
2260 | context_exists:2, | |
2261 | display:4, | |
2262 | unique_name:8, | |
2263 | more_display:16 | |
2264 | */ | |
c906108c SS |
2265 | |
2266 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2267 | ||
2268 | static char * | |
fba45db2 | 2269 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2270 | { |
23860348 MS |
2271 | *pkt++ = 'q'; /* Info Query */ |
2272 | *pkt++ = 'P'; /* process or thread info */ | |
2273 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2274 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2275 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2276 | return pkt; |
2277 | } | |
2278 | ||
23860348 | 2279 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2280 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2281 | add more fields as time goes by. */ |
c906108c | 2282 | |
23860348 | 2283 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2284 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2285 | fetch registers and its stack? */ |
c5aa993b | 2286 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2287 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2288 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2289 | the process. */ |
c906108c SS |
2290 | |
2291 | static int | |
fba45db2 KB |
2292 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2293 | struct gdb_ext_thread_info *info) | |
c906108c | 2294 | { |
d01949b6 | 2295 | struct remote_state *rs = get_remote_state (); |
c906108c | 2296 | int mask, length; |
cfd77fa1 | 2297 | int tag; |
c906108c | 2298 | threadref ref; |
6d820c5c | 2299 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2300 | int retval = 1; |
2301 | ||
23860348 | 2302 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2303 | info->active = 0; |
2304 | info->display[0] = '\0'; | |
2305 | info->shortname[0] = '\0'; | |
2306 | info->more_display[0] = '\0'; | |
2307 | ||
23860348 MS |
2308 | /* Assume the characters indicating the packet type have been |
2309 | stripped. */ | |
c906108c SS |
2310 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2311 | pkt = unpack_threadid (pkt, &ref); | |
2312 | ||
2313 | if (mask == 0) | |
8a3fe4f8 | 2314 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2315 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2316 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2317 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2318 | return 0; |
2319 | } | |
2320 | copy_threadref (&info->threadid, &ref); | |
2321 | ||
23860348 | 2322 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2323 | |
23860348 MS |
2324 | /* Packets are terminated with nulls. */ |
2325 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2326 | { |
2327 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2328 | pkt = unpack_byte (pkt, &length); /* length */ |
2329 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2330 | { |
8a3fe4f8 | 2331 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2332 | retval = 0; |
2333 | break; | |
2334 | } | |
2335 | if (tag == TAG_THREADID) | |
2336 | { | |
2337 | if (length != 16) | |
2338 | { | |
8a3fe4f8 | 2339 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2340 | retval = 0; |
2341 | break; | |
2342 | } | |
2343 | pkt = unpack_threadid (pkt, &ref); | |
2344 | mask = mask & ~TAG_THREADID; | |
2345 | continue; | |
2346 | } | |
2347 | if (tag == TAG_EXISTS) | |
2348 | { | |
2349 | info->active = stub_unpack_int (pkt, length); | |
2350 | pkt += length; | |
2351 | mask = mask & ~(TAG_EXISTS); | |
2352 | if (length > 8) | |
2353 | { | |
8a3fe4f8 | 2354 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2355 | retval = 0; |
2356 | break; | |
2357 | } | |
2358 | continue; | |
2359 | } | |
2360 | if (tag == TAG_THREADNAME) | |
2361 | { | |
2362 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2363 | mask = mask & ~TAG_THREADNAME; | |
2364 | continue; | |
2365 | } | |
2366 | if (tag == TAG_DISPLAY) | |
2367 | { | |
2368 | pkt = unpack_string (pkt, &info->display[0], length); | |
2369 | mask = mask & ~TAG_DISPLAY; | |
2370 | continue; | |
2371 | } | |
2372 | if (tag == TAG_MOREDISPLAY) | |
2373 | { | |
2374 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2375 | mask = mask & ~TAG_MOREDISPLAY; | |
2376 | continue; | |
2377 | } | |
8a3fe4f8 | 2378 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2379 | break; /* Not a tag we know about. */ |
c906108c SS |
2380 | } |
2381 | return retval; | |
2382 | } | |
2383 | ||
2384 | static int | |
fba45db2 KB |
2385 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2386 | struct gdb_ext_thread_info *info) | |
c906108c | 2387 | { |
d01949b6 | 2388 | struct remote_state *rs = get_remote_state (); |
c906108c | 2389 | int result; |
c906108c | 2390 | |
2e9f7625 DJ |
2391 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2392 | putpkt (rs->buf); | |
6d820c5c | 2393 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2394 | |
2395 | if (rs->buf[0] == '\0') | |
2396 | return 0; | |
2397 | ||
2e9f7625 | 2398 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2399 | threadid, info); |
c906108c SS |
2400 | return result; |
2401 | } | |
2402 | ||
c906108c SS |
2403 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2404 | ||
2405 | static char * | |
fba45db2 KB |
2406 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2407 | threadref *nextthread) | |
c906108c SS |
2408 | { |
2409 | *pkt++ = 'q'; /* info query packet */ | |
2410 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2411 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2412 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2413 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2414 | *pkt = '\0'; | |
2415 | return pkt; | |
2416 | } | |
2417 | ||
2418 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2419 | ||
2420 | static int | |
fba45db2 KB |
2421 | parse_threadlist_response (char *pkt, int result_limit, |
2422 | threadref *original_echo, threadref *resultlist, | |
2423 | int *doneflag) | |
c906108c | 2424 | { |
d01949b6 | 2425 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2426 | char *limit; |
2427 | int count, resultcount, done; | |
2428 | ||
2429 | resultcount = 0; | |
2430 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2431 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2432 | /* done parse past here */ |
c906108c SS |
2433 | pkt = unpack_byte (pkt, &count); /* count field */ |
2434 | pkt = unpack_nibble (pkt, &done); | |
2435 | /* The first threadid is the argument threadid. */ | |
2436 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2437 | while ((count-- > 0) && (pkt < limit)) | |
2438 | { | |
2439 | pkt = unpack_threadid (pkt, resultlist++); | |
2440 | if (resultcount++ >= result_limit) | |
2441 | break; | |
2442 | } | |
2443 | if (doneflag) | |
2444 | *doneflag = done; | |
2445 | return resultcount; | |
2446 | } | |
2447 | ||
2448 | static int | |
fba45db2 KB |
2449 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2450 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2451 | { |
d01949b6 | 2452 | struct remote_state *rs = get_remote_state (); |
c906108c | 2453 | static threadref echo_nextthread; |
c906108c SS |
2454 | int result = 1; |
2455 | ||
23860348 | 2456 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2457 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2458 | >= get_remote_packet_size ()) | |
ea9c271d | 2459 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2460 | |
6d820c5c DJ |
2461 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2462 | putpkt (rs->buf); | |
2463 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2464 | |
d8f2712d | 2465 | if (*rs->buf == '\0') |
21bce120 | 2466 | return 0; |
d8f2712d VP |
2467 | else |
2468 | *result_count = | |
2469 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2470 | threadlist, done); | |
c906108c SS |
2471 | |
2472 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2473 | { | |
23860348 MS |
2474 | /* FIXME: This is a good reason to drop the packet. */ |
2475 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2476 | /* Possabilities : |
2477 | retransmit immediatly - race conditions | |
2478 | retransmit after timeout - yes | |
2479 | exit | |
2480 | wait for packet, then exit | |
2481 | */ | |
8a3fe4f8 | 2482 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2483 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2484 | } |
2485 | if (*result_count <= 0) | |
2486 | { | |
2487 | if (*done != 1) | |
2488 | { | |
8a3fe4f8 | 2489 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2490 | result = 0; |
2491 | } | |
2492 | return result; /* break; */ | |
2493 | } | |
2494 | if (*result_count > result_limit) | |
2495 | { | |
2496 | *result_count = 0; | |
8a3fe4f8 | 2497 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2498 | return 0; |
2499 | } | |
2500 | return result; | |
2501 | } | |
2502 | ||
23860348 MS |
2503 | /* This is the interface between remote and threads, remotes upper |
2504 | interface. */ | |
c906108c SS |
2505 | |
2506 | /* remote_find_new_threads retrieves the thread list and for each | |
2507 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2508 | adding the thread if it does not already exist. This involves |
c906108c SS |
2509 | getting partial thread lists from the remote target so, polling the |
2510 | quit_flag is required. */ | |
2511 | ||
2512 | ||
23860348 | 2513 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2514 | |
2515 | #define MAXTHREADLISTRESULTS 32 | |
2516 | ||
2517 | static int | |
fba45db2 KB |
2518 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2519 | int looplimit) | |
c906108c SS |
2520 | { |
2521 | int done, i, result_count; | |
2522 | int startflag = 1; | |
2523 | int result = 1; | |
2524 | int loopcount = 0; | |
2525 | static threadref nextthread; | |
2526 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2527 | ||
2528 | done = 0; | |
2529 | while (!done) | |
2530 | { | |
2531 | if (loopcount++ > looplimit) | |
2532 | { | |
2533 | result = 0; | |
8a3fe4f8 | 2534 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2535 | break; |
2536 | } | |
2537 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2538 | &done, &result_count, resultthreadlist)) | |
2539 | { | |
2540 | result = 0; | |
2541 | break; | |
2542 | } | |
23860348 | 2543 | /* Clear for later iterations. */ |
c906108c SS |
2544 | startflag = 0; |
2545 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2546 | if (result_count >= 1) | |
2547 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2548 | i = 0; | |
2549 | while (result_count--) | |
2550 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2551 | break; | |
2552 | } | |
2553 | return result; | |
2554 | } | |
2555 | ||
2556 | static int | |
fba45db2 | 2557 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2558 | { |
79d7f229 PA |
2559 | int pid = ptid_get_pid (inferior_ptid); |
2560 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2561 | |
2562 | if (!in_thread_list (ptid)) | |
2563 | add_thread (ptid); | |
c906108c SS |
2564 | return 1; /* continue iterator */ |
2565 | } | |
2566 | ||
2567 | #define CRAZY_MAX_THREADS 1000 | |
2568 | ||
39f77062 KB |
2569 | static ptid_t |
2570 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2571 | { |
d01949b6 | 2572 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2573 | |
2574 | putpkt ("qC"); | |
6d820c5c | 2575 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2576 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2577 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2578 | else |
2579 | return oldpid; | |
2580 | } | |
2581 | ||
802188a7 RM |
2582 | /* Find new threads for info threads command. |
2583 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2584 | */ |
cce74817 JM |
2585 | |
2586 | static void | |
fba45db2 | 2587 | remote_find_new_threads (void) |
c906108c | 2588 | { |
c5aa993b JM |
2589 | remote_threadlist_iterator (remote_newthread_step, 0, |
2590 | CRAZY_MAX_THREADS); | |
c906108c SS |
2591 | } |
2592 | ||
dc146f7c VP |
2593 | #if defined(HAVE_LIBEXPAT) |
2594 | ||
2595 | typedef struct thread_item | |
2596 | { | |
2597 | ptid_t ptid; | |
2598 | char *extra; | |
2599 | int core; | |
2600 | } thread_item_t; | |
2601 | DEF_VEC_O(thread_item_t); | |
2602 | ||
2603 | struct threads_parsing_context | |
2604 | { | |
2605 | VEC (thread_item_t) *items; | |
2606 | }; | |
2607 | ||
2608 | static void | |
2609 | start_thread (struct gdb_xml_parser *parser, | |
2610 | const struct gdb_xml_element *element, | |
2611 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2612 | { | |
2613 | struct threads_parsing_context *data = user_data; | |
2614 | ||
2615 | struct thread_item item; | |
2616 | char *id; | |
3d2c1d41 | 2617 | struct gdb_xml_value *attr; |
dc146f7c | 2618 | |
3d2c1d41 | 2619 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2620 | item.ptid = read_ptid (id, NULL); |
2621 | ||
3d2c1d41 PA |
2622 | attr = xml_find_attribute (attributes, "core"); |
2623 | if (attr != NULL) | |
2624 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2625 | else |
2626 | item.core = -1; | |
2627 | ||
2628 | item.extra = 0; | |
2629 | ||
2630 | VEC_safe_push (thread_item_t, data->items, &item); | |
2631 | } | |
2632 | ||
2633 | static void | |
2634 | end_thread (struct gdb_xml_parser *parser, | |
2635 | const struct gdb_xml_element *element, | |
2636 | void *user_data, const char *body_text) | |
2637 | { | |
2638 | struct threads_parsing_context *data = user_data; | |
2639 | ||
2640 | if (body_text && *body_text) | |
2ae2a0b7 | 2641 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2642 | } |
2643 | ||
2644 | const struct gdb_xml_attribute thread_attributes[] = { | |
2645 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2646 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2647 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2648 | }; | |
2649 | ||
2650 | const struct gdb_xml_element thread_children[] = { | |
2651 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2652 | }; | |
2653 | ||
2654 | const struct gdb_xml_element threads_children[] = { | |
2655 | { "thread", thread_attributes, thread_children, | |
2656 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2657 | start_thread, end_thread }, | |
2658 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2659 | }; | |
2660 | ||
2661 | const struct gdb_xml_element threads_elements[] = { | |
2662 | { "threads", NULL, threads_children, | |
2663 | GDB_XML_EF_NONE, NULL, NULL }, | |
2664 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2665 | }; | |
2666 | ||
02357a4a PA |
2667 | /* Discard the contents of the constructed thread info context. */ |
2668 | ||
2669 | static void | |
2670 | clear_threads_parsing_context (void *p) | |
2671 | { | |
2672 | struct threads_parsing_context *context = p; | |
2673 | int i; | |
2674 | struct thread_item *item; | |
2675 | ||
2676 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2677 | xfree (item->extra); | |
2678 | ||
2679 | VEC_free (thread_item_t, context->items); | |
2680 | } | |
2681 | ||
dc146f7c VP |
2682 | #endif |
2683 | ||
9d1f7ab2 MS |
2684 | /* |
2685 | * Find all threads for info threads command. | |
2686 | * Uses new thread protocol contributed by Cisco. | |
2687 | * Falls back and attempts to use the older method (above) | |
2688 | * if the target doesn't respond to the new method. | |
2689 | */ | |
2690 | ||
0f71a2f6 | 2691 | static void |
28439f5e | 2692 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2693 | { |
d01949b6 | 2694 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2695 | char *bufp; |
79d7f229 | 2696 | ptid_t new_thread; |
0f71a2f6 JM |
2697 | |
2698 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2699 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2700 | |
dc146f7c VP |
2701 | #if defined(HAVE_LIBEXPAT) |
2702 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2703 | { | |
2704 | char *xml = target_read_stralloc (¤t_target, | |
2705 | TARGET_OBJECT_THREADS, NULL); | |
2706 | ||
2707 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2708 | |
dc146f7c VP |
2709 | if (xml && *xml) |
2710 | { | |
dc146f7c | 2711 | struct threads_parsing_context context; |
dc146f7c | 2712 | |
efc0eabd PA |
2713 | context.items = NULL; |
2714 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2715 | |
efc0eabd PA |
2716 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2717 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2718 | { |
2719 | int i; | |
2720 | struct thread_item *item; | |
2721 | ||
3e43a32a MS |
2722 | for (i = 0; |
2723 | VEC_iterate (thread_item_t, context.items, i, item); | |
2724 | ++i) | |
dc146f7c VP |
2725 | { |
2726 | if (!ptid_equal (item->ptid, null_ptid)) | |
2727 | { | |
2728 | struct private_thread_info *info; | |
2729 | /* In non-stop mode, we assume new found threads | |
2730 | are running until proven otherwise with a | |
2731 | stop reply. In all-stop, we can only get | |
2732 | here if all threads are stopped. */ | |
2733 | int running = non_stop ? 1 : 0; | |
2734 | ||
2735 | remote_notice_new_inferior (item->ptid, running); | |
2736 | ||
2737 | info = demand_private_info (item->ptid); | |
2738 | info->core = item->core; | |
2739 | info->extra = item->extra; | |
02357a4a | 2740 | item->extra = NULL; |
dc146f7c | 2741 | } |
dc146f7c VP |
2742 | } |
2743 | } | |
dc146f7c VP |
2744 | } |
2745 | ||
2746 | do_cleanups (back_to); | |
2747 | return; | |
2748 | } | |
2749 | #endif | |
2750 | ||
9d1f7ab2 MS |
2751 | if (use_threadinfo_query) |
2752 | { | |
2753 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2754 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2755 | bufp = rs->buf; |
9d1f7ab2 | 2756 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2757 | { |
44d594fd PA |
2758 | struct cleanup *old_chain; |
2759 | char *saved_reply; | |
2760 | ||
2761 | /* remote_notice_new_inferior (in the loop below) may make | |
2762 | new RSP calls, which clobber rs->buf. Work with a | |
2763 | copy. */ | |
2764 | bufp = saved_reply = xstrdup (rs->buf); | |
2765 | old_chain = make_cleanup (free_current_contents, &saved_reply); | |
2766 | ||
9d1f7ab2 MS |
2767 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2768 | { | |
2769 | do | |
2770 | { | |
82f73884 | 2771 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2772 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2773 | { |
74531fed | 2774 | /* In non-stop mode, we assume new found threads |
1941c569 | 2775 | are running until proven otherwise with a |
74531fed PA |
2776 | stop reply. In all-stop, we can only get |
2777 | here if all threads are stopped. */ | |
1941c569 PA |
2778 | int running = non_stop ? 1 : 0; |
2779 | ||
2780 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2781 | } |
9d1f7ab2 MS |
2782 | } |
2783 | while (*bufp++ == ','); /* comma-separated list */ | |
44d594fd | 2784 | free_current_contents (&saved_reply); |
9d1f7ab2 | 2785 | putpkt ("qsThreadInfo"); |
6d820c5c | 2786 | getpkt (&rs->buf, &rs->buf_size, 0); |
44d594fd | 2787 | bufp = saved_reply = xstrdup (rs->buf); |
9d1f7ab2 | 2788 | } |
44d594fd | 2789 | do_cleanups (old_chain); |
9d1f7ab2 MS |
2790 | return; /* done */ |
2791 | } | |
2792 | } | |
2793 | ||
74531fed PA |
2794 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2795 | if (non_stop) | |
2796 | return; | |
2797 | ||
23860348 | 2798 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2799 | use_threadinfo_query = 0; |
2800 | remote_find_new_threads (); | |
2801 | return; | |
2802 | } | |
2803 | ||
802188a7 | 2804 | /* |
9d1f7ab2 MS |
2805 | * Collect a descriptive string about the given thread. |
2806 | * The target may say anything it wants to about the thread | |
2807 | * (typically info about its blocked / runnable state, name, etc.). | |
2808 | * This string will appear in the info threads display. | |
802188a7 | 2809 | * |
9d1f7ab2 MS |
2810 | * Optional: targets are not required to implement this function. |
2811 | */ | |
2812 | ||
2813 | static char * | |
2814 | remote_threads_extra_info (struct thread_info *tp) | |
2815 | { | |
d01949b6 | 2816 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2817 | int result; |
2818 | int set; | |
2819 | threadref id; | |
2820 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2821 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2822 | int n = 0; /* position in display_buf */ |
2823 | ||
2824 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2825 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2826 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2827 | |
60e569b9 PA |
2828 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2829 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2830 | /* This is the main thread which was added by GDB. The remote | |
2831 | server doesn't know about it. */ | |
2832 | return NULL; | |
2833 | ||
dc146f7c VP |
2834 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2835 | { | |
2836 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2837 | |
dc146f7c VP |
2838 | if (info && info->private) |
2839 | return info->private->extra; | |
2840 | else | |
2841 | return NULL; | |
2842 | } | |
2843 | ||
9d1f7ab2 MS |
2844 | if (use_threadextra_query) |
2845 | { | |
82f73884 PA |
2846 | char *b = rs->buf; |
2847 | char *endb = rs->buf + get_remote_packet_size (); | |
2848 | ||
2849 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2850 | b += strlen (b); | |
2851 | write_ptid (b, endb, tp->ptid); | |
2852 | ||
2e9f7625 | 2853 | putpkt (rs->buf); |
6d820c5c | 2854 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2855 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2856 | { |
2e9f7625 DJ |
2857 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2858 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2859 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2860 | return display_buf; |
2861 | } | |
0f71a2f6 | 2862 | } |
9d1f7ab2 MS |
2863 | |
2864 | /* If the above query fails, fall back to the old method. */ | |
2865 | use_threadextra_query = 0; | |
2866 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2867 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2868 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2869 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2870 | if (threadinfo.active) | |
0f71a2f6 | 2871 | { |
9d1f7ab2 | 2872 | if (*threadinfo.shortname) |
2bc416ba | 2873 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2874 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2875 | if (*threadinfo.display) |
2bc416ba | 2876 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2877 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2878 | if (*threadinfo.more_display) |
2bc416ba | 2879 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2880 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2881 | |
2882 | if (n > 0) | |
c5aa993b | 2883 | { |
23860348 | 2884 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2885 | if (',' == display_buf[n-1]) |
2886 | display_buf[n-1] = ' '; | |
2887 | return display_buf; | |
c5aa993b | 2888 | } |
0f71a2f6 | 2889 | } |
9d1f7ab2 | 2890 | return NULL; |
0f71a2f6 | 2891 | } |
c906108c | 2892 | \f |
c5aa993b | 2893 | |
0fb4aa4b PA |
2894 | static int |
2895 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2896 | struct static_tracepoint_marker *marker) | |
2897 | { | |
2898 | struct remote_state *rs = get_remote_state (); | |
2899 | char *p = rs->buf; | |
2900 | ||
bba74b36 | 2901 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2902 | p += strlen (p); |
2903 | p += hexnumstr (p, addr); | |
2904 | putpkt (rs->buf); | |
2905 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2906 | p = rs->buf; | |
2907 | ||
2908 | if (*p == 'E') | |
2909 | error (_("Remote failure reply: %s"), p); | |
2910 | ||
2911 | if (*p++ == 'm') | |
2912 | { | |
2913 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2914 | return 1; | |
2915 | } | |
2916 | ||
2917 | return 0; | |
2918 | } | |
2919 | ||
0fb4aa4b PA |
2920 | static VEC(static_tracepoint_marker_p) * |
2921 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2922 | { | |
2923 | struct remote_state *rs = get_remote_state (); | |
2924 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2925 | struct static_tracepoint_marker *marker = NULL; | |
2926 | struct cleanup *old_chain; | |
2927 | char *p; | |
2928 | ||
2929 | /* Ask for a first packet of static tracepoint marker | |
2930 | definition. */ | |
2931 | putpkt ("qTfSTM"); | |
2932 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2933 | p = rs->buf; | |
2934 | if (*p == 'E') | |
2935 | error (_("Remote failure reply: %s"), p); | |
2936 | ||
2937 | old_chain = make_cleanup (free_current_marker, &marker); | |
2938 | ||
2939 | while (*p++ == 'm') | |
2940 | { | |
2941 | if (marker == NULL) | |
2942 | marker = XCNEW (struct static_tracepoint_marker); | |
2943 | ||
2944 | do | |
2945 | { | |
2946 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2947 | ||
2948 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2949 | { | |
2950 | VEC_safe_push (static_tracepoint_marker_p, | |
2951 | markers, marker); | |
2952 | marker = NULL; | |
2953 | } | |
2954 | else | |
2955 | { | |
2956 | release_static_tracepoint_marker (marker); | |
2957 | memset (marker, 0, sizeof (*marker)); | |
2958 | } | |
2959 | } | |
2960 | while (*p++ == ','); /* comma-separated list */ | |
2961 | /* Ask for another packet of static tracepoint definition. */ | |
2962 | putpkt ("qTsSTM"); | |
2963 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2964 | p = rs->buf; | |
2965 | } | |
2966 | ||
2967 | do_cleanups (old_chain); | |
2968 | return markers; | |
2969 | } | |
2970 | ||
2971 | \f | |
10760264 JB |
2972 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2973 | ||
2974 | static ptid_t | |
2975 | remote_get_ada_task_ptid (long lwp, long thread) | |
2976 | { | |
2977 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2978 | } | |
2979 | \f | |
2980 | ||
24b06219 | 2981 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2982 | |
2983 | static void | |
fba45db2 | 2984 | extended_remote_restart (void) |
c906108c | 2985 | { |
d01949b6 | 2986 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2987 | |
2988 | /* Send the restart command; for reasons I don't understand the | |
2989 | remote side really expects a number after the "R". */ | |
ea9c271d | 2990 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2991 | putpkt (rs->buf); |
c906108c | 2992 | |
ad9a8f3f | 2993 | remote_fileio_reset (); |
c906108c SS |
2994 | } |
2995 | \f | |
2996 | /* Clean up connection to a remote debugger. */ | |
2997 | ||
c906108c | 2998 | static void |
fba45db2 | 2999 | remote_close (int quitting) |
c906108c | 3000 | { |
d3fd5342 PA |
3001 | if (remote_desc == NULL) |
3002 | return; /* already closed */ | |
3003 | ||
3004 | /* Make sure we leave stdin registered in the event loop, and we | |
3005 | don't leave the async SIGINT signal handler installed. */ | |
3006 | remote_terminal_ours (); | |
ce5ce7ed | 3007 | |
d3fd5342 PA |
3008 | serial_close (remote_desc); |
3009 | remote_desc = NULL; | |
ce5ce7ed PA |
3010 | |
3011 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3012 | of all the inferiors and their threads we were controlling. |
3013 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3014 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3015 | inferior_ptid = null_ptid; |
f67fd822 | 3016 | discard_all_inferiors (); |
ce5ce7ed | 3017 | |
5f4cf0bb YQ |
3018 | /* Stop replies may from inferiors which are still unknown to GDB. |
3019 | We are closing the remote target, so we should discard | |
3020 | everything, including the stop replies from GDB-unknown | |
3021 | inferiors. */ | |
3022 | discard_pending_stop_replies (NULL); | |
74531fed PA |
3023 | |
3024 | if (remote_async_inferior_event_token) | |
3025 | delete_async_event_handler (&remote_async_inferior_event_token); | |
722247f1 YQ |
3026 | |
3027 | remote_notif_unregister_async_event_handler (); | |
c906108c SS |
3028 | } |
3029 | ||
23860348 | 3030 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3031 | |
3032 | static void | |
fba45db2 | 3033 | get_offsets (void) |
c906108c | 3034 | { |
d01949b6 | 3035 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3036 | char *buf; |
085dd6e6 | 3037 | char *ptr; |
31d99776 DJ |
3038 | int lose, num_segments = 0, do_sections, do_segments; |
3039 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3040 | struct section_offsets *offs; |
31d99776 DJ |
3041 | struct symfile_segment_data *data; |
3042 | ||
3043 | if (symfile_objfile == NULL) | |
3044 | return; | |
c906108c SS |
3045 | |
3046 | putpkt ("qOffsets"); | |
6d820c5c | 3047 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3048 | buf = rs->buf; |
c906108c SS |
3049 | |
3050 | if (buf[0] == '\000') | |
3051 | return; /* Return silently. Stub doesn't support | |
23860348 | 3052 | this command. */ |
c906108c SS |
3053 | if (buf[0] == 'E') |
3054 | { | |
8a3fe4f8 | 3055 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3056 | return; |
3057 | } | |
3058 | ||
3059 | /* Pick up each field in turn. This used to be done with scanf, but | |
3060 | scanf will make trouble if CORE_ADDR size doesn't match | |
3061 | conversion directives correctly. The following code will work | |
3062 | with any size of CORE_ADDR. */ | |
3063 | text_addr = data_addr = bss_addr = 0; | |
3064 | ptr = buf; | |
3065 | lose = 0; | |
3066 | ||
3067 | if (strncmp (ptr, "Text=", 5) == 0) | |
3068 | { | |
3069 | ptr += 5; | |
3070 | /* Don't use strtol, could lose on big values. */ | |
3071 | while (*ptr && *ptr != ';') | |
3072 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3073 | |
31d99776 DJ |
3074 | if (strncmp (ptr, ";Data=", 6) == 0) |
3075 | { | |
3076 | ptr += 6; | |
3077 | while (*ptr && *ptr != ';') | |
3078 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3079 | } | |
3080 | else | |
3081 | lose = 1; | |
3082 | ||
3083 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3084 | { | |
3085 | ptr += 5; | |
3086 | while (*ptr && *ptr != ';') | |
3087 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3088 | |
31d99776 DJ |
3089 | if (bss_addr != data_addr) |
3090 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3091 | } | |
3092 | else | |
3093 | lose = 1; | |
3094 | } | |
3095 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3096 | { |
31d99776 DJ |
3097 | ptr += 8; |
3098 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3099 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3100 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3101 | num_segments = 1; | |
3102 | ||
3103 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3104 | { | |
3105 | ptr += 9; | |
3106 | while (*ptr && *ptr != ';') | |
3107 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3108 | num_segments++; | |
3109 | } | |
c906108c SS |
3110 | } |
3111 | else | |
3112 | lose = 1; | |
3113 | ||
3114 | if (lose) | |
8a3fe4f8 | 3115 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3116 | else if (*ptr != '\0') |
3117 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3118 | |
802188a7 | 3119 | offs = ((struct section_offsets *) |
a39a16c4 | 3120 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3121 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3122 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3123 | |
31d99776 DJ |
3124 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3125 | do_segments = (data != NULL); | |
3126 | do_sections = num_segments == 0; | |
c906108c | 3127 | |
28c32713 | 3128 | if (num_segments > 0) |
31d99776 | 3129 | { |
31d99776 DJ |
3130 | segments[0] = text_addr; |
3131 | segments[1] = data_addr; | |
3132 | } | |
28c32713 JB |
3133 | /* If we have two segments, we can still try to relocate everything |
3134 | by assuming that the .text and .data offsets apply to the whole | |
3135 | text and data segments. Convert the offsets given in the packet | |
3136 | to base addresses for symfile_map_offsets_to_segments. */ | |
3137 | else if (data && data->num_segments == 2) | |
3138 | { | |
3139 | segments[0] = data->segment_bases[0] + text_addr; | |
3140 | segments[1] = data->segment_bases[1] + data_addr; | |
3141 | num_segments = 2; | |
3142 | } | |
8d385431 DJ |
3143 | /* If the object file has only one segment, assume that it is text |
3144 | rather than data; main programs with no writable data are rare, | |
3145 | but programs with no code are useless. Of course the code might | |
3146 | have ended up in the data segment... to detect that we would need | |
3147 | the permissions here. */ | |
3148 | else if (data && data->num_segments == 1) | |
3149 | { | |
3150 | segments[0] = data->segment_bases[0] + text_addr; | |
3151 | num_segments = 1; | |
3152 | } | |
28c32713 JB |
3153 | /* There's no way to relocate by segment. */ |
3154 | else | |
3155 | do_segments = 0; | |
31d99776 DJ |
3156 | |
3157 | if (do_segments) | |
3158 | { | |
3159 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3160 | offs, num_segments, segments); | |
3161 | ||
3162 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3163 | error (_("Can not handle qOffsets TextSeg " |
3164 | "response with this symbol file")); | |
31d99776 DJ |
3165 | |
3166 | if (ret > 0) | |
3167 | do_sections = 0; | |
3168 | } | |
c906108c | 3169 | |
9ef895d6 DJ |
3170 | if (data) |
3171 | free_symfile_segment_data (data); | |
31d99776 DJ |
3172 | |
3173 | if (do_sections) | |
3174 | { | |
3175 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3176 | ||
3e43a32a MS |
3177 | /* This is a temporary kludge to force data and bss to use the |
3178 | same offsets because that's what nlmconv does now. The real | |
3179 | solution requires changes to the stub and remote.c that I | |
3180 | don't have time to do right now. */ | |
31d99776 DJ |
3181 | |
3182 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3183 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3184 | } | |
c906108c SS |
3185 | |
3186 | objfile_relocate (symfile_objfile, offs); | |
3187 | } | |
3188 | ||
74531fed PA |
3189 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3190 | threads we know are stopped already. This is used during the | |
3191 | initial remote connection in non-stop mode --- threads that are | |
3192 | reported as already being stopped are left stopped. */ | |
3193 | ||
3194 | static int | |
3195 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3196 | { | |
3197 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3198 | if (peek_stop_reply (thread->ptid)) | |
3199 | set_stop_requested (thread->ptid, 1); | |
3200 | ||
3201 | return 0; | |
3202 | } | |
3203 | ||
9a7071a8 JB |
3204 | /* Send interrupt_sequence to remote target. */ |
3205 | static void | |
eeae04df | 3206 | send_interrupt_sequence (void) |
9a7071a8 JB |
3207 | { |
3208 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3209 | serial_write (remote_desc, "\x03", 1); | |
3210 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3211 | serial_send_break (remote_desc); | |
3212 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3213 | { | |
3214 | serial_send_break (remote_desc); | |
3215 | serial_write (remote_desc, "g", 1); | |
3216 | } | |
3217 | else | |
3218 | internal_error (__FILE__, __LINE__, | |
3219 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3220 | interrupt_sequence_mode); | |
3221 | } | |
3222 | ||
3405876a PA |
3223 | |
3224 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3225 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3226 | ||
3227 | static ptid_t | |
3228 | stop_reply_extract_thread (char *stop_reply) | |
3229 | { | |
3230 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3231 | { | |
3232 | char *p; | |
3233 | ||
3234 | /* Txx r:val ; r:val (...) */ | |
3235 | p = &stop_reply[3]; | |
3236 | ||
3237 | /* Look for "register" named "thread". */ | |
3238 | while (*p != '\0') | |
3239 | { | |
3240 | char *p1; | |
3241 | ||
3242 | p1 = strchr (p, ':'); | |
3243 | if (p1 == NULL) | |
3244 | return null_ptid; | |
3245 | ||
3246 | if (strncmp (p, "thread", p1 - p) == 0) | |
3247 | return read_ptid (++p1, &p); | |
3248 | ||
3249 | p1 = strchr (p, ';'); | |
3250 | if (p1 == NULL) | |
3251 | return null_ptid; | |
3252 | p1++; | |
3253 | ||
3254 | p = p1; | |
3255 | } | |
3256 | } | |
3257 | ||
3258 | return null_ptid; | |
3259 | } | |
3260 | ||
49c62f2e PA |
3261 | /* Query the remote target for which is the current thread/process, |
3262 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3263 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
3264 | to return the current thread. |
3265 | ||
3266 | This function is called after handling the '?' or 'vRun' packets, | |
3267 | whose response is a stop reply from which we can also try | |
3268 | extracting the thread. If the target doesn't support the explicit | |
3269 | qC query, we infer the current thread from that stop reply, passed | |
3270 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e PA |
3271 | |
3272 | static void | |
3405876a | 3273 | add_current_inferior_and_thread (char *wait_status) |
49c62f2e PA |
3274 | { |
3275 | struct remote_state *rs = get_remote_state (); | |
3276 | int fake_pid_p = 0; | |
3405876a | 3277 | ptid_t ptid = null_ptid; |
49c62f2e PA |
3278 | |
3279 | inferior_ptid = null_ptid; | |
3280 | ||
3405876a PA |
3281 | /* Now, if we have thread information, update inferior_ptid. First |
3282 | if we have a stop reply handy, maybe it's a T stop reply with a | |
3283 | "thread" register we can extract the current thread from. If | |
3284 | not, ask the remote which is the current thread, with qC. The | |
3285 | former method avoids a roundtrip. Note we don't use | |
3286 | remote_parse_stop_reply as that makes use of the target | |
3287 | architecture, which we haven't yet fully determined at this | |
3288 | point. */ | |
3289 | if (wait_status != NULL) | |
3290 | ptid = stop_reply_extract_thread (wait_status); | |
3291 | if (ptid_equal (ptid, null_ptid)) | |
3292 | ptid = remote_current_thread (inferior_ptid); | |
3293 | ||
49c62f2e PA |
3294 | if (!ptid_equal (ptid, null_ptid)) |
3295 | { | |
3296 | if (!remote_multi_process_p (rs)) | |
3297 | fake_pid_p = 1; | |
3298 | ||
3299 | inferior_ptid = ptid; | |
3300 | } | |
3301 | else | |
3302 | { | |
3303 | /* Without this, some commands which require an active target | |
3304 | (such as kill) won't work. This variable serves (at least) | |
3305 | double duty as both the pid of the target process (if it has | |
3306 | such), and as a flag indicating that a target is active. */ | |
3307 | inferior_ptid = magic_null_ptid; | |
3308 | fake_pid_p = 1; | |
3309 | } | |
3310 | ||
3311 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3312 | ||
3313 | /* Add the main thread. */ | |
3314 | add_thread_silent (inferior_ptid); | |
3315 | } | |
3316 | ||
9cbc821d | 3317 | static void |
04bd08de | 3318 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3319 | { |
c8d104ad PA |
3320 | struct remote_state *rs = get_remote_state (); |
3321 | struct packet_config *noack_config; | |
2d717e4f | 3322 | char *wait_status = NULL; |
8621d6a9 | 3323 | |
23860348 | 3324 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3325 | QUIT; |
c906108c | 3326 | |
9a7071a8 JB |
3327 | if (interrupt_on_connect) |
3328 | send_interrupt_sequence (); | |
3329 | ||
57e12211 TT |
3330 | /* Ack any packet which the remote side has already sent. */ |
3331 | serial_write (remote_desc, "+", 1); | |
3332 | ||
1e51243a PA |
3333 | /* Signal other parts that we're going through the initial setup, |
3334 | and so things may not be stable yet. */ | |
3335 | rs->starting_up = 1; | |
3336 | ||
c8d104ad PA |
3337 | /* The first packet we send to the target is the optional "supported |
3338 | packets" request. If the target can answer this, it will tell us | |
3339 | which later probes to skip. */ | |
3340 | remote_query_supported (); | |
3341 | ||
d914c394 SS |
3342 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3343 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3344 | remote_set_permissions (); | |
3345 | ||
c8d104ad PA |
3346 | /* Next, we possibly activate noack mode. |
3347 | ||
3348 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3349 | enable noack mode if the stub reported a wish for it with | |
3350 | qSupported. | |
3351 | ||
3352 | If set to TRUE, then enable noack mode even if the stub didn't | |
3353 | report it in qSupported. If the stub doesn't reply OK, the | |
3354 | session ends with an error. | |
3355 | ||
3356 | If FALSE, then don't activate noack mode, regardless of what the | |
3357 | stub claimed should be the default with qSupported. */ | |
3358 | ||
3359 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3360 | ||
3361 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3362 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3363 | && noack_config->support == PACKET_ENABLE)) | |
3364 | { | |
3365 | putpkt ("QStartNoAckMode"); | |
3366 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3367 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3368 | rs->noack_mode = 1; | |
3369 | } | |
3370 | ||
04bd08de | 3371 | if (extended_p) |
5fe04517 PA |
3372 | { |
3373 | /* Tell the remote that we are using the extended protocol. */ | |
3374 | putpkt ("!"); | |
3375 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3376 | } | |
3377 | ||
9b224c5e PA |
3378 | /* Let the target know which signals it is allowed to pass down to |
3379 | the program. */ | |
3380 | update_signals_program_target (); | |
3381 | ||
d962ef82 DJ |
3382 | /* Next, if the target can specify a description, read it. We do |
3383 | this before anything involving memory or registers. */ | |
3384 | target_find_description (); | |
3385 | ||
6c95b8df PA |
3386 | /* Next, now that we know something about the target, update the |
3387 | address spaces in the program spaces. */ | |
3388 | update_address_spaces (); | |
3389 | ||
50c71eaf PA |
3390 | /* On OSs where the list of libraries is global to all |
3391 | processes, we fetch them early. */ | |
f5656ead | 3392 | if (gdbarch_has_global_solist (target_gdbarch ())) |
04bd08de | 3393 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3394 | |
74531fed PA |
3395 | if (non_stop) |
3396 | { | |
3397 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3398 | error (_("Non-stop mode requested, but remote " |
3399 | "does not support non-stop")); | |
74531fed PA |
3400 | |
3401 | putpkt ("QNonStop:1"); | |
3402 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3403 | ||
3404 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3405 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3406 | |
3407 | /* Find about threads and processes the stub is already | |
3408 | controlling. We default to adding them in the running state. | |
3409 | The '?' query below will then tell us about which threads are | |
3410 | stopped. */ | |
04bd08de | 3411 | remote_threads_info (target); |
74531fed PA |
3412 | } |
3413 | else if (rs->non_stop_aware) | |
3414 | { | |
3415 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 3416 | Request it explicitly. */ |
74531fed PA |
3417 | putpkt ("QNonStop:0"); |
3418 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3419 | ||
3420 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3421 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3422 | } |
3423 | ||
2d717e4f DJ |
3424 | /* Check whether the target is running now. */ |
3425 | putpkt ("?"); | |
3426 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3427 | ||
74531fed | 3428 | if (!non_stop) |
2d717e4f | 3429 | { |
e714e1bf UW |
3430 | ptid_t ptid; |
3431 | int fake_pid_p = 0; | |
3432 | struct inferior *inf; | |
3433 | ||
74531fed | 3434 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3435 | { |
04bd08de | 3436 | if (!extended_p) |
74531fed | 3437 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3438 | |
3439 | /* We're connected, but not running. Drop out before we | |
3440 | call start_remote. */ | |
e278ad5b | 3441 | rs->starting_up = 0; |
c35b1492 | 3442 | return; |
2d717e4f DJ |
3443 | } |
3444 | else | |
74531fed | 3445 | { |
74531fed PA |
3446 | /* Save the reply for later. */ |
3447 | wait_status = alloca (strlen (rs->buf) + 1); | |
3448 | strcpy (wait_status, rs->buf); | |
3449 | } | |
3450 | ||
3451 | /* Let the stub know that we want it to return the thread. */ | |
3452 | set_continue_thread (minus_one_ptid); | |
3453 | ||
3405876a | 3454 | add_current_inferior_and_thread (wait_status); |
74531fed | 3455 | |
6e586cc5 YQ |
3456 | /* init_wait_for_inferior should be called before get_offsets in order |
3457 | to manage `inserted' flag in bp loc in a correct state. | |
3458 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3459 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3460 | start_remote, set `inserted' flag to 1. In the initialization of | |
3461 | inferior, breakpoint_init_inferior should be called first, and then | |
3462 | breakpoint_re_set can be called. If this order is broken, state of | |
3463 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3464 | manipulation. */ | |
3465 | init_wait_for_inferior (); | |
3466 | ||
74531fed PA |
3467 | get_offsets (); /* Get text, data & bss offsets. */ |
3468 | ||
d962ef82 DJ |
3469 | /* If we could not find a description using qXfer, and we know |
3470 | how to do it some other way, try again. This is not | |
3471 | supported for non-stop; it could be, but it is tricky if | |
3472 | there are no stopped threads when we connect. */ | |
04bd08de | 3473 | if (remote_read_description_p (target) |
f5656ead | 3474 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
3475 | { |
3476 | target_clear_description (); | |
3477 | target_find_description (); | |
3478 | } | |
3479 | ||
74531fed PA |
3480 | /* Use the previously fetched status. */ |
3481 | gdb_assert (wait_status != NULL); | |
3482 | strcpy (rs->buf, wait_status); | |
3483 | rs->cached_wait_status = 1; | |
3484 | ||
3485 | immediate_quit--; | |
04bd08de | 3486 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3487 | } |
3488 | else | |
3489 | { | |
68c97600 PA |
3490 | /* Clear WFI global state. Do this before finding about new |
3491 | threads and inferiors, and setting the current inferior. | |
3492 | Otherwise we would clear the proceed status of the current | |
3493 | inferior when we want its stop_soon state to be preserved | |
3494 | (see notice_new_inferior). */ | |
3495 | init_wait_for_inferior (); | |
3496 | ||
74531fed PA |
3497 | /* In non-stop, we will either get an "OK", meaning that there |
3498 | are no stopped threads at this time; or, a regular stop | |
3499 | reply. In the latter case, there may be more than one thread | |
3500 | stopped --- we pull them all out using the vStopped | |
3501 | mechanism. */ | |
3502 | if (strcmp (rs->buf, "OK") != 0) | |
3503 | { | |
722247f1 | 3504 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 3505 | |
722247f1 YQ |
3506 | /* remote_notif_get_pending_replies acks this one, and gets |
3507 | the rest out. */ | |
3508 | notif_client_stop.pending_event | |
3509 | = remote_notif_parse (notif, rs->buf); | |
3510 | remote_notif_get_pending_events (notif); | |
c906108c | 3511 | |
74531fed PA |
3512 | /* Make sure that threads that were stopped remain |
3513 | stopped. */ | |
3514 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3515 | } | |
2d717e4f | 3516 | |
74531fed PA |
3517 | if (target_can_async_p ()) |
3518 | target_async (inferior_event_handler, 0); | |
c906108c | 3519 | |
74531fed PA |
3520 | if (thread_count () == 0) |
3521 | { | |
04bd08de | 3522 | if (!extended_p) |
74531fed | 3523 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3524 | |
c35b1492 PA |
3525 | /* We're connected, but not running. Drop out before we |
3526 | call start_remote. */ | |
e278ad5b | 3527 | rs->starting_up = 0; |
c35b1492 PA |
3528 | return; |
3529 | } | |
74531fed PA |
3530 | |
3531 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3532 | |
74531fed PA |
3533 | /* Force the stub to choose a thread. */ |
3534 | set_general_thread (null_ptid); | |
c906108c | 3535 | |
74531fed PA |
3536 | /* Query it. */ |
3537 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3538 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3539 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3540 | |
74531fed PA |
3541 | get_offsets (); /* Get text, data & bss offsets. */ |
3542 | ||
3543 | /* In non-stop mode, any cached wait status will be stored in | |
3544 | the stop reply queue. */ | |
3545 | gdb_assert (wait_status == NULL); | |
f0223081 | 3546 | |
2455069d UW |
3547 | /* Report all signals during attach/startup. */ |
3548 | remote_pass_signals (0, NULL); | |
74531fed | 3549 | } |
c8d104ad | 3550 | |
c8d104ad PA |
3551 | /* If we connected to a live target, do some additional setup. */ |
3552 | if (target_has_execution) | |
3553 | { | |
3554 | if (exec_bfd) /* No use without an exec file. */ | |
3555 | remote_check_symbols (symfile_objfile); | |
3556 | } | |
50c71eaf | 3557 | |
d5551862 SS |
3558 | /* Possibly the target has been engaged in a trace run started |
3559 | previously; find out where things are at. */ | |
26afc0d7 | 3560 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3561 | { |
00bf0b85 SS |
3562 | struct uploaded_tp *uploaded_tps = NULL; |
3563 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3564 | ||
00bf0b85 SS |
3565 | if (current_trace_status ()->running) |
3566 | printf_filtered (_("Trace is already running on the target.\n")); | |
3567 | ||
3568 | /* Get trace state variables first, they may be checked when | |
3569 | parsing uploaded commands. */ | |
3570 | ||
3571 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3572 | ||
3573 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3574 | ||
3575 | remote_upload_tracepoints (&uploaded_tps); | |
3576 | ||
3577 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3578 | } |
3579 | ||
1e51243a PA |
3580 | /* The thread and inferior lists are now synchronized with the |
3581 | target, our symbols have been relocated, and we're merged the | |
3582 | target's tracepoints with ours. We're done with basic start | |
3583 | up. */ | |
3584 | rs->starting_up = 0; | |
3585 | ||
2567c7d9 | 3586 | /* If breakpoints are global, insert them now. */ |
f5656ead | 3587 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) |
50c71eaf PA |
3588 | && breakpoints_always_inserted_mode ()) |
3589 | insert_breakpoints (); | |
c906108c SS |
3590 | } |
3591 | ||
3592 | /* Open a connection to a remote debugger. | |
3593 | NAME is the filename used for communication. */ | |
3594 | ||
3595 | static void | |
fba45db2 | 3596 | remote_open (char *name, int from_tty) |
c906108c | 3597 | { |
75c99385 | 3598 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3599 | } |
3600 | ||
c906108c SS |
3601 | /* Open a connection to a remote debugger using the extended |
3602 | remote gdb protocol. NAME is the filename used for communication. */ | |
3603 | ||
3604 | static void | |
fba45db2 | 3605 | extended_remote_open (char *name, int from_tty) |
c906108c | 3606 | { |
75c99385 | 3607 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3608 | } |
3609 | ||
c906108c SS |
3610 | /* Generic code for opening a connection to a remote target. */ |
3611 | ||
d471ea57 AC |
3612 | static void |
3613 | init_all_packet_configs (void) | |
3614 | { | |
3615 | int i; | |
a744cf53 | 3616 | |
444abaca DJ |
3617 | for (i = 0; i < PACKET_MAX; i++) |
3618 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3619 | } |
3620 | ||
23860348 | 3621 | /* Symbol look-up. */ |
dc8acb97 MS |
3622 | |
3623 | static void | |
3624 | remote_check_symbols (struct objfile *objfile) | |
3625 | { | |
d01949b6 | 3626 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3627 | char *msg, *reply, *tmp; |
3628 | struct minimal_symbol *sym; | |
3629 | int end; | |
3630 | ||
63154eca PA |
3631 | /* The remote side has no concept of inferiors that aren't running |
3632 | yet, it only knows about running processes. If we're connected | |
3633 | but our current inferior is not running, we should not invite the | |
3634 | remote target to request symbol lookups related to its | |
3635 | (unrelated) current process. */ | |
3636 | if (!target_has_execution) | |
3637 | return; | |
3638 | ||
444abaca | 3639 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3640 | return; |
3641 | ||
63154eca PA |
3642 | /* Make sure the remote is pointing at the right process. Note |
3643 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3644 | set_general_process (); |
3645 | ||
6d820c5c DJ |
3646 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3647 | because we need both at the same time. */ | |
ea9c271d | 3648 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3649 | |
23860348 | 3650 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3651 | |
3652 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3653 | getpkt (&rs->buf, &rs->buf_size, 0); |
3654 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3655 | reply = rs->buf; |
dc8acb97 MS |
3656 | |
3657 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3658 | { | |
3659 | tmp = &reply[8]; | |
cfd77fa1 | 3660 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3661 | msg[end] = '\0'; |
3662 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3663 | if (sym == NULL) | |
ea9c271d | 3664 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3665 | else |
2bbe3cc1 | 3666 | { |
f5656ead | 3667 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
2bbe3cc1 DJ |
3668 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3669 | ||
3670 | /* If this is a function address, return the start of code | |
3671 | instead of any data function descriptor. */ | |
f5656ead | 3672 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 DJ |
3673 | sym_addr, |
3674 | ¤t_target); | |
3675 | ||
3676 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3677 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3678 | } |
3679 | ||
dc8acb97 | 3680 | putpkt (msg); |
6d820c5c | 3681 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3682 | reply = rs->buf; |
dc8acb97 MS |
3683 | } |
3684 | } | |
3685 | ||
9db8d71f DJ |
3686 | static struct serial * |
3687 | remote_serial_open (char *name) | |
3688 | { | |
3689 | static int udp_warning = 0; | |
3690 | ||
3691 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3692 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3693 | serial connection is reliable and not the serial connection promising | |
3694 | to be. */ | |
3695 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3696 | { | |
3e43a32a MS |
3697 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3698 | "Some events may be lost, rendering further debugging " | |
3699 | "impossible.")); | |
9db8d71f DJ |
3700 | udp_warning = 1; |
3701 | } | |
3702 | ||
3703 | return serial_open (name); | |
3704 | } | |
3705 | ||
d914c394 SS |
3706 | /* Inform the target of our permission settings. The permission flags |
3707 | work without this, but if the target knows the settings, it can do | |
3708 | a couple things. First, it can add its own check, to catch cases | |
3709 | that somehow manage to get by the permissions checks in target | |
3710 | methods. Second, if the target is wired to disallow particular | |
3711 | settings (for instance, a system in the field that is not set up to | |
3712 | be able to stop at a breakpoint), it can object to any unavailable | |
3713 | permissions. */ | |
3714 | ||
3715 | void | |
3716 | remote_set_permissions (void) | |
3717 | { | |
3718 | struct remote_state *rs = get_remote_state (); | |
3719 | ||
bba74b36 YQ |
3720 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3721 | "WriteReg:%x;WriteMem:%x;" | |
3722 | "InsertBreak:%x;InsertTrace:%x;" | |
3723 | "InsertFastTrace:%x;Stop:%x", | |
3724 | may_write_registers, may_write_memory, | |
3725 | may_insert_breakpoints, may_insert_tracepoints, | |
3726 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3727 | putpkt (rs->buf); |
3728 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3729 | ||
3730 | /* If the target didn't like the packet, warn the user. Do not try | |
3731 | to undo the user's settings, that would just be maddening. */ | |
3732 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3733 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3734 | } |
3735 | ||
be2a5f71 DJ |
3736 | /* This type describes each known response to the qSupported |
3737 | packet. */ | |
3738 | struct protocol_feature | |
3739 | { | |
3740 | /* The name of this protocol feature. */ | |
3741 | const char *name; | |
3742 | ||
3743 | /* The default for this protocol feature. */ | |
3744 | enum packet_support default_support; | |
3745 | ||
3746 | /* The function to call when this feature is reported, or after | |
3747 | qSupported processing if the feature is not supported. | |
3748 | The first argument points to this structure. The second | |
3749 | argument indicates whether the packet requested support be | |
3750 | enabled, disabled, or probed (or the default, if this function | |
3751 | is being called at the end of processing and this feature was | |
3752 | not reported). The third argument may be NULL; if not NULL, it | |
3753 | is a NUL-terminated string taken from the packet following | |
3754 | this feature's name and an equals sign. */ | |
3755 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3756 | const char *); | |
3757 | ||
3758 | /* The corresponding packet for this feature. Only used if | |
3759 | FUNC is remote_supported_packet. */ | |
3760 | int packet; | |
3761 | }; | |
3762 | ||
be2a5f71 DJ |
3763 | static void |
3764 | remote_supported_packet (const struct protocol_feature *feature, | |
3765 | enum packet_support support, | |
3766 | const char *argument) | |
3767 | { | |
3768 | if (argument) | |
3769 | { | |
3770 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3771 | " \"%s\"."), feature->name); | |
3772 | return; | |
3773 | } | |
3774 | ||
3775 | if (remote_protocol_packets[feature->packet].support | |
3776 | == PACKET_SUPPORT_UNKNOWN) | |
3777 | remote_protocol_packets[feature->packet].support = support; | |
3778 | } | |
be2a5f71 DJ |
3779 | |
3780 | static void | |
3781 | remote_packet_size (const struct protocol_feature *feature, | |
3782 | enum packet_support support, const char *value) | |
3783 | { | |
3784 | struct remote_state *rs = get_remote_state (); | |
3785 | ||
3786 | int packet_size; | |
3787 | char *value_end; | |
3788 | ||
3789 | if (support != PACKET_ENABLE) | |
3790 | return; | |
3791 | ||
3792 | if (value == NULL || *value == '\0') | |
3793 | { | |
3794 | warning (_("Remote target reported \"%s\" without a size."), | |
3795 | feature->name); | |
3796 | return; | |
3797 | } | |
3798 | ||
3799 | errno = 0; | |
3800 | packet_size = strtol (value, &value_end, 16); | |
3801 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3802 | { | |
3803 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3804 | feature->name, value); | |
3805 | return; | |
3806 | } | |
3807 | ||
3808 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3809 | { | |
3810 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3811 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3812 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3813 | } | |
3814 | ||
3815 | /* Record the new maximum packet size. */ | |
3816 | rs->explicit_packet_size = packet_size; | |
3817 | } | |
3818 | ||
82f73884 PA |
3819 | static void |
3820 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3821 | enum packet_support support, const char *value) | |
3822 | { | |
3823 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3824 | |
82f73884 PA |
3825 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3826 | } | |
3827 | ||
74531fed PA |
3828 | static void |
3829 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3830 | enum packet_support support, const char *value) | |
3831 | { | |
3832 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3833 | |
74531fed PA |
3834 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3835 | } | |
3836 | ||
782b2b07 SS |
3837 | static void |
3838 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3839 | enum packet_support support, | |
3840 | const char *value) | |
3841 | { | |
3842 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3843 | |
782b2b07 SS |
3844 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3845 | } | |
3846 | ||
3788aec7 LM |
3847 | static void |
3848 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3849 | enum packet_support support, | |
3850 | const char *value) | |
3851 | { | |
3852 | struct remote_state *rs = get_remote_state (); | |
3853 | ||
3854 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3855 | } | |
3856 | ||
d3ce09f5 SS |
3857 | static void |
3858 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3859 | enum packet_support support, | |
3860 | const char *value) | |
3861 | { | |
3862 | struct remote_state *rs = get_remote_state (); | |
3863 | ||
3864 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3865 | } | |
3866 | ||
7a697b8d SS |
3867 | static void |
3868 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3869 | enum packet_support support, | |
3870 | const char *value) | |
3871 | { | |
3872 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3873 | |
7a697b8d SS |
3874 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3875 | } | |
3876 | ||
0fb4aa4b PA |
3877 | static void |
3878 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3879 | enum packet_support support, | |
3880 | const char *value) | |
3881 | { | |
3882 | struct remote_state *rs = get_remote_state (); | |
3883 | ||
3884 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3885 | } | |
3886 | ||
1e4d1764 YQ |
3887 | static void |
3888 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3889 | enum packet_support support, | |
3890 | const char *value) | |
3891 | { | |
3892 | struct remote_state *rs = get_remote_state (); | |
3893 | ||
3894 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3895 | } | |
3896 | ||
d5551862 SS |
3897 | static void |
3898 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3899 | enum packet_support support, | |
3900 | const char *value) | |
3901 | { | |
3902 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3903 | |
d5551862 SS |
3904 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3905 | } | |
3906 | ||
d248b706 KY |
3907 | static void |
3908 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3909 | enum packet_support support, | |
3910 | const char *value) | |
3911 | { | |
3912 | struct remote_state *rs = get_remote_state (); | |
3913 | ||
3914 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3915 | } | |
3916 | ||
3065dfb6 SS |
3917 | static void |
3918 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3919 | enum packet_support support, | |
3920 | const char *value) | |
3921 | { | |
3922 | struct remote_state *rs = get_remote_state (); | |
3923 | ||
3924 | rs->string_tracing = (support == PACKET_ENABLE); | |
3925 | } | |
3926 | ||
be2a5f71 | 3927 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3928 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3929 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3930 | PACKET_qXfer_auxv }, |
23181151 DJ |
3931 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3932 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3933 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3934 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3935 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3936 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3937 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3938 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3939 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3940 | PACKET_qXfer_spu_read }, | |
3941 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3942 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3943 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3944 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3945 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3946 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3947 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3948 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3949 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3950 | PACKET_QPassSignals }, | |
9b224c5e PA |
3951 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
3952 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
3953 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3954 | PACKET_QStartNoAckMode }, | |
82f73884 | 3955 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3956 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3957 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3958 | PACKET_qXfer_siginfo_read }, | |
3959 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3960 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3961 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3962 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
3963 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
3964 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
3965 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
3966 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
3967 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3968 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3969 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3970 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3971 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3972 | PACKET_InstallInTrace}, | |
d5551862 SS |
3973 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3974 | -1 }, | |
40ab02ce MS |
3975 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3976 | PACKET_bc }, | |
3977 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3978 | PACKET_bs }, | |
409873ef SS |
3979 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3980 | PACKET_TracepointSource }, | |
d914c394 SS |
3981 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3982 | PACKET_QAllow }, | |
d248b706 KY |
3983 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3984 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3985 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3986 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
3987 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
3988 | PACKET_qXfer_uib }, | |
03583c20 UW |
3989 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3990 | PACKET_QDisableRandomization }, | |
d1feda86 | 3991 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
3065dfb6 SS |
3992 | { "tracenz", PACKET_DISABLE, |
3993 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3994 | }; |
3995 | ||
c8d5aac9 L |
3996 | static char *remote_support_xml; |
3997 | ||
3998 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3999 | ||
4000 | void | |
6e39997a | 4001 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
4002 | { |
4003 | #if defined(HAVE_LIBEXPAT) | |
4004 | if (remote_support_xml == NULL) | |
c4f7c687 | 4005 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
4006 | else |
4007 | { | |
4008 | char *copy = xstrdup (remote_support_xml + 13); | |
4009 | char *p = strtok (copy, ","); | |
4010 | ||
4011 | do | |
4012 | { | |
4013 | if (strcmp (p, xml) == 0) | |
4014 | { | |
4015 | /* already there */ | |
4016 | xfree (copy); | |
4017 | return; | |
4018 | } | |
4019 | } | |
4020 | while ((p = strtok (NULL, ",")) != NULL); | |
4021 | xfree (copy); | |
4022 | ||
94b0dee1 PA |
4023 | remote_support_xml = reconcat (remote_support_xml, |
4024 | remote_support_xml, ",", xml, | |
4025 | (char *) NULL); | |
c8d5aac9 L |
4026 | } |
4027 | #endif | |
4028 | } | |
4029 | ||
4030 | static char * | |
4031 | remote_query_supported_append (char *msg, const char *append) | |
4032 | { | |
4033 | if (msg) | |
94b0dee1 | 4034 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
4035 | else |
4036 | return xstrdup (append); | |
4037 | } | |
4038 | ||
be2a5f71 DJ |
4039 | static void |
4040 | remote_query_supported (void) | |
4041 | { | |
4042 | struct remote_state *rs = get_remote_state (); | |
4043 | char *next; | |
4044 | int i; | |
4045 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4046 | ||
4047 | /* The packet support flags are handled differently for this packet | |
4048 | than for most others. We treat an error, a disabled packet, and | |
4049 | an empty response identically: any features which must be reported | |
4050 | to be used will be automatically disabled. An empty buffer | |
4051 | accomplishes this, since that is also the representation for a list | |
4052 | containing no features. */ | |
4053 | ||
4054 | rs->buf[0] = 0; | |
4055 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4056 | { | |
c8d5aac9 | 4057 | char *q = NULL; |
94b0dee1 | 4058 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4059 | |
901f9912 | 4060 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4061 | |
4062 | if (remote_support_xml) | |
4063 | q = remote_query_supported_append (q, remote_support_xml); | |
4064 | ||
dde08ee1 PA |
4065 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4066 | ||
4067 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4068 | putpkt (q); | |
82f73884 | 4069 | |
94b0dee1 PA |
4070 | do_cleanups (old_chain); |
4071 | ||
be2a5f71 DJ |
4072 | getpkt (&rs->buf, &rs->buf_size, 0); |
4073 | ||
4074 | /* If an error occured, warn, but do not return - just reset the | |
4075 | buffer to empty and go on to disable features. */ | |
4076 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4077 | == PACKET_ERROR) | |
4078 | { | |
4079 | warning (_("Remote failure reply: %s"), rs->buf); | |
4080 | rs->buf[0] = 0; | |
4081 | } | |
4082 | } | |
4083 | ||
4084 | memset (seen, 0, sizeof (seen)); | |
4085 | ||
4086 | next = rs->buf; | |
4087 | while (*next) | |
4088 | { | |
4089 | enum packet_support is_supported; | |
4090 | char *p, *end, *name_end, *value; | |
4091 | ||
4092 | /* First separate out this item from the rest of the packet. If | |
4093 | there's another item after this, we overwrite the separator | |
4094 | (terminated strings are much easier to work with). */ | |
4095 | p = next; | |
4096 | end = strchr (p, ';'); | |
4097 | if (end == NULL) | |
4098 | { | |
4099 | end = p + strlen (p); | |
4100 | next = end; | |
4101 | } | |
4102 | else | |
4103 | { | |
89be2091 DJ |
4104 | *end = '\0'; |
4105 | next = end + 1; | |
4106 | ||
be2a5f71 DJ |
4107 | if (end == p) |
4108 | { | |
4109 | warning (_("empty item in \"qSupported\" response")); | |
4110 | continue; | |
4111 | } | |
be2a5f71 DJ |
4112 | } |
4113 | ||
4114 | name_end = strchr (p, '='); | |
4115 | if (name_end) | |
4116 | { | |
4117 | /* This is a name=value entry. */ | |
4118 | is_supported = PACKET_ENABLE; | |
4119 | value = name_end + 1; | |
4120 | *name_end = '\0'; | |
4121 | } | |
4122 | else | |
4123 | { | |
4124 | value = NULL; | |
4125 | switch (end[-1]) | |
4126 | { | |
4127 | case '+': | |
4128 | is_supported = PACKET_ENABLE; | |
4129 | break; | |
4130 | ||
4131 | case '-': | |
4132 | is_supported = PACKET_DISABLE; | |
4133 | break; | |
4134 | ||
4135 | case '?': | |
4136 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4137 | break; | |
4138 | ||
4139 | default: | |
3e43a32a MS |
4140 | warning (_("unrecognized item \"%s\" " |
4141 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4142 | continue; |
4143 | } | |
4144 | end[-1] = '\0'; | |
4145 | } | |
4146 | ||
4147 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4148 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4149 | { | |
4150 | const struct protocol_feature *feature; | |
4151 | ||
4152 | seen[i] = 1; | |
4153 | feature = &remote_protocol_features[i]; | |
4154 | feature->func (feature, is_supported, value); | |
4155 | break; | |
4156 | } | |
4157 | } | |
4158 | ||
4159 | /* If we increased the packet size, make sure to increase the global | |
4160 | buffer size also. We delay this until after parsing the entire | |
4161 | qSupported packet, because this is the same buffer we were | |
4162 | parsing. */ | |
4163 | if (rs->buf_size < rs->explicit_packet_size) | |
4164 | { | |
4165 | rs->buf_size = rs->explicit_packet_size; | |
4166 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4167 | } | |
4168 | ||
4169 | /* Handle the defaults for unmentioned features. */ | |
4170 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4171 | if (!seen[i]) | |
4172 | { | |
4173 | const struct protocol_feature *feature; | |
4174 | ||
4175 | feature = &remote_protocol_features[i]; | |
4176 | feature->func (feature, feature->default_support, NULL); | |
4177 | } | |
4178 | } | |
4179 | ||
4180 | ||
c906108c | 4181 | static void |
3e43a32a MS |
4182 | remote_open_1 (char *name, int from_tty, |
4183 | struct target_ops *target, int extended_p) | |
c906108c | 4184 | { |
d01949b6 | 4185 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4186 | |
c906108c | 4187 | if (name == 0) |
8a3fe4f8 | 4188 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4189 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4190 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4191 | |
23860348 | 4192 | /* See FIXME above. */ |
c6ebd6cf | 4193 | if (!target_async_permitted) |
92d1e331 | 4194 | wait_forever_enabled_p = 1; |
6426a772 | 4195 | |
2d717e4f DJ |
4196 | /* If we're connected to a running target, target_preopen will kill it. |
4197 | But if we're connected to a target system with no running process, | |
4198 | then we will still be connected when it returns. Ask this question | |
4199 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4200 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4201 | { |
4202 | if (!from_tty | |
4203 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4204 | pop_target (); | |
4205 | else | |
4206 | error (_("Still connected.")); | |
4207 | } | |
4208 | ||
c906108c SS |
4209 | target_preopen (from_tty); |
4210 | ||
4211 | unpush_target (target); | |
4212 | ||
2d717e4f DJ |
4213 | /* This time without a query. If we were connected to an |
4214 | extended-remote target and target_preopen killed the running | |
4215 | process, we may still be connected. If we are starting "target | |
4216 | remote" now, the extended-remote target will not have been | |
4217 | removed by unpush_target. */ | |
c35b1492 | 4218 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4219 | pop_target (); |
4220 | ||
89be2091 DJ |
4221 | /* Make sure we send the passed signals list the next time we resume. */ |
4222 | xfree (last_pass_packet); | |
4223 | last_pass_packet = NULL; | |
4224 | ||
9b224c5e PA |
4225 | /* Make sure we send the program signals list the next time we |
4226 | resume. */ | |
4227 | xfree (last_program_signals_packet); | |
4228 | last_program_signals_packet = NULL; | |
4229 | ||
ad9a8f3f | 4230 | remote_fileio_reset (); |
1dd41f16 NS |
4231 | reopen_exec_file (); |
4232 | reread_symbols (); | |
4233 | ||
9db8d71f | 4234 | remote_desc = remote_serial_open (name); |
c906108c SS |
4235 | if (!remote_desc) |
4236 | perror_with_name (name); | |
4237 | ||
4238 | if (baud_rate != -1) | |
4239 | { | |
2cd58942 | 4240 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4241 | { |
9b74d5d3 KB |
4242 | /* The requested speed could not be set. Error out to |
4243 | top level after closing remote_desc. Take care to | |
4244 | set remote_desc to NULL to avoid closing remote_desc | |
4245 | more than once. */ | |
2cd58942 | 4246 | serial_close (remote_desc); |
9b74d5d3 | 4247 | remote_desc = NULL; |
c906108c SS |
4248 | perror_with_name (name); |
4249 | } | |
4250 | } | |
4251 | ||
2cd58942 | 4252 | serial_raw (remote_desc); |
c906108c SS |
4253 | |
4254 | /* If there is something sitting in the buffer we might take it as a | |
4255 | response to a command, which would be bad. */ | |
2cd58942 | 4256 | serial_flush_input (remote_desc); |
c906108c SS |
4257 | |
4258 | if (from_tty) | |
4259 | { | |
4260 | puts_filtered ("Remote debugging using "); | |
4261 | puts_filtered (name); | |
4262 | puts_filtered ("\n"); | |
4263 | } | |
23860348 | 4264 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4265 | |
74531fed PA |
4266 | /* Register extra event sources in the event loop. */ |
4267 | remote_async_inferior_event_token | |
4268 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4269 | NULL); | |
722247f1 | 4270 | remote_notif_register_async_event_handler (); |
74531fed | 4271 | |
be2a5f71 DJ |
4272 | /* Reset the target state; these things will be queried either by |
4273 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4274 | init_all_packet_configs (); |
74531fed | 4275 | rs->cached_wait_status = 0; |
be2a5f71 | 4276 | rs->explicit_packet_size = 0; |
a6f3e723 | 4277 | rs->noack_mode = 0; |
82f73884 PA |
4278 | rs->multi_process_aware = 0; |
4279 | rs->extended = extended_p; | |
74531fed | 4280 | rs->non_stop_aware = 0; |
e24a49d8 | 4281 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4282 | rs->ctrlc_pending_p = 0; |
802188a7 | 4283 | |
79d7f229 PA |
4284 | general_thread = not_sent_ptid; |
4285 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4286 | remote_traceframe_number = -1; |
c906108c | 4287 | |
9d1f7ab2 MS |
4288 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4289 | use_threadinfo_query = 1; | |
4290 | use_threadextra_query = 1; | |
4291 | ||
c6ebd6cf | 4292 | if (target_async_permitted) |
92d1e331 | 4293 | { |
23860348 | 4294 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4295 | remote_async_terminal_ours_p = 1; |
4296 | ||
4297 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4298 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4299 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4300 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4301 | around this. Eventually a mechanism that allows |
92d1e331 | 4302 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4303 | implemented. */ |
92d1e331 DJ |
4304 | wait_forever_enabled_p = 0; |
4305 | } | |
4306 | ||
23860348 | 4307 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4308 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4309 | |
74531fed PA |
4310 | /* Start afresh. */ |
4311 | init_thread_list (); | |
4312 | ||
36918e70 | 4313 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4314 | target (we'd otherwise be in an inconsistent state) and then |
4315 | propogate the error on up the exception chain. This ensures that | |
4316 | the caller doesn't stumble along blindly assuming that the | |
4317 | function succeeded. The CLI doesn't have this problem but other | |
4318 | UI's, such as MI do. | |
36918e70 AC |
4319 | |
4320 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4321 | this function should return an error indication letting the | |
ce2826aa | 4322 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4323 | ``target remote'' is directly wired to this function making that |
4324 | impossible. On a positive note, the CLI side of this problem has | |
4325 | been fixed - the function set_cmd_context() makes it possible for | |
4326 | all the ``target ....'' commands to share a common callback | |
4327 | function. See cli-dump.c. */ | |
109c3e39 | 4328 | { |
04bd08de | 4329 | volatile struct gdb_exception ex; |
2d717e4f | 4330 | |
04bd08de TT |
4331 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4332 | { | |
4333 | remote_start_remote (from_tty, target, extended_p); | |
4334 | } | |
109c3e39 AC |
4335 | if (ex.reason < 0) |
4336 | { | |
c8d104ad PA |
4337 | /* Pop the partially set up target - unless something else did |
4338 | already before throwing the exception. */ | |
4339 | if (remote_desc != NULL) | |
4340 | pop_target (); | |
c6ebd6cf | 4341 | if (target_async_permitted) |
109c3e39 AC |
4342 | wait_forever_enabled_p = 1; |
4343 | throw_exception (ex); | |
4344 | } | |
4345 | } | |
c906108c | 4346 | |
c6ebd6cf | 4347 | if (target_async_permitted) |
92d1e331 | 4348 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4349 | } |
4350 | ||
c906108c SS |
4351 | /* This takes a program previously attached to and detaches it. After |
4352 | this is done, GDB can be used to debug some other program. We | |
4353 | better not have left any breakpoints in the target program or it'll | |
4354 | die when it hits one. */ | |
4355 | ||
4356 | static void | |
2d717e4f | 4357 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4358 | { |
82f73884 | 4359 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4360 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4361 | |
4362 | if (args) | |
8a3fe4f8 | 4363 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4364 | |
2d717e4f DJ |
4365 | if (!target_has_execution) |
4366 | error (_("No process to detach from.")); | |
4367 | ||
7cee1e54 PA |
4368 | if (from_tty) |
4369 | { | |
4370 | char *exec_file = get_exec_file (0); | |
4371 | if (exec_file == NULL) | |
4372 | exec_file = ""; | |
4373 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4374 | target_pid_to_str (pid_to_ptid (pid))); | |
4375 | gdb_flush (gdb_stdout); | |
4376 | } | |
4377 | ||
c906108c | 4378 | /* Tell the remote target to detach. */ |
82f73884 | 4379 | if (remote_multi_process_p (rs)) |
bba74b36 | 4380 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4381 | else |
4382 | strcpy (rs->buf, "D"); | |
4383 | ||
4ddda9b5 PA |
4384 | putpkt (rs->buf); |
4385 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4386 | ||
82f73884 PA |
4387 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4388 | ; | |
4389 | else if (rs->buf[0] == '\0') | |
4390 | error (_("Remote doesn't know how to detach")); | |
4391 | else | |
4ddda9b5 | 4392 | error (_("Can't detach process.")); |
c906108c | 4393 | |
7cee1e54 PA |
4394 | if (from_tty && !extended) |
4395 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4396 | |
82f73884 | 4397 | target_mourn_inferior (); |
2d717e4f DJ |
4398 | } |
4399 | ||
4400 | static void | |
136d6dae | 4401 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4402 | { |
4403 | remote_detach_1 (args, from_tty, 0); | |
4404 | } | |
4405 | ||
4406 | static void | |
136d6dae | 4407 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4408 | { |
4409 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4410 | } |
4411 | ||
6ad8ae5c DJ |
4412 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4413 | ||
43ff13b4 | 4414 | static void |
597320e7 | 4415 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4416 | { |
43ff13b4 | 4417 | if (args) |
2d717e4f | 4418 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4419 | |
2d717e4f DJ |
4420 | /* Make sure we unpush even the extended remote targets; mourn |
4421 | won't do it. So call remote_mourn_1 directly instead of | |
4422 | target_mourn_inferior. */ | |
4423 | remote_mourn_1 (target); | |
4424 | ||
43ff13b4 JM |
4425 | if (from_tty) |
4426 | puts_filtered ("Ending remote debugging.\n"); | |
4427 | } | |
4428 | ||
2d717e4f DJ |
4429 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4430 | be chatty about it. */ | |
4431 | ||
4432 | static void | |
4433 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4434 | { | |
4435 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4436 | int pid; |
96ef3384 | 4437 | char *wait_status = NULL; |
2d717e4f | 4438 | |
74164c56 | 4439 | pid = parse_pid_to_attach (args); |
2d717e4f | 4440 | |
74164c56 JK |
4441 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4442 | way as in other targets. */ | |
2d717e4f DJ |
4443 | |
4444 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4445 | error (_("This target does not support attaching to a process")); | |
4446 | ||
7cee1e54 PA |
4447 | if (from_tty) |
4448 | { | |
4449 | char *exec_file = get_exec_file (0); | |
4450 | ||
4451 | if (exec_file) | |
4452 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4453 | target_pid_to_str (pid_to_ptid (pid))); | |
4454 | else | |
4455 | printf_unfiltered (_("Attaching to %s\n"), | |
4456 | target_pid_to_str (pid_to_ptid (pid))); | |
4457 | ||
4458 | gdb_flush (gdb_stdout); | |
4459 | } | |
4460 | ||
bba74b36 | 4461 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4462 | putpkt (rs->buf); |
4463 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4464 | ||
3e43a32a MS |
4465 | if (packet_ok (rs->buf, |
4466 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4467 | { |
74531fed PA |
4468 | if (!non_stop) |
4469 | { | |
4470 | /* Save the reply for later. */ | |
4471 | wait_status = alloca (strlen (rs->buf) + 1); | |
4472 | strcpy (wait_status, rs->buf); | |
4473 | } | |
4474 | else if (strcmp (rs->buf, "OK") != 0) | |
4475 | error (_("Attaching to %s failed with: %s"), | |
4476 | target_pid_to_str (pid_to_ptid (pid)), | |
4477 | rs->buf); | |
2d717e4f DJ |
4478 | } |
4479 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4480 | error (_("This target does not support attaching to a process")); | |
4481 | else | |
4482 | error (_("Attaching to %s failed"), | |
4483 | target_pid_to_str (pid_to_ptid (pid))); | |
4484 | ||
49c62f2e | 4485 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4486 | |
2d717e4f | 4487 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4488 | |
bad34192 PA |
4489 | if (non_stop) |
4490 | { | |
4491 | struct thread_info *thread; | |
79d7f229 | 4492 | |
bad34192 PA |
4493 | /* Get list of threads. */ |
4494 | remote_threads_info (target); | |
82f73884 | 4495 | |
bad34192 PA |
4496 | thread = first_thread_of_process (pid); |
4497 | if (thread) | |
4498 | inferior_ptid = thread->ptid; | |
4499 | else | |
4500 | inferior_ptid = pid_to_ptid (pid); | |
4501 | ||
4502 | /* Invalidate our notion of the remote current thread. */ | |
4503 | record_currthread (minus_one_ptid); | |
4504 | } | |
74531fed | 4505 | else |
bad34192 PA |
4506 | { |
4507 | /* Now, if we have thread information, update inferior_ptid. */ | |
4508 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4509 | ||
4510 | /* Add the main thread to the thread list. */ | |
4511 | add_thread_silent (inferior_ptid); | |
4512 | } | |
c0a2216e | 4513 | |
96ef3384 UW |
4514 | /* Next, if the target can specify a description, read it. We do |
4515 | this before anything involving memory or registers. */ | |
4516 | target_find_description (); | |
4517 | ||
74531fed PA |
4518 | if (!non_stop) |
4519 | { | |
4520 | /* Use the previously fetched status. */ | |
4521 | gdb_assert (wait_status != NULL); | |
4522 | ||
4523 | if (target_can_async_p ()) | |
4524 | { | |
722247f1 YQ |
4525 | struct notif_event *reply |
4526 | = remote_notif_parse (¬if_client_stop, wait_status); | |
74531fed | 4527 | |
722247f1 | 4528 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
4529 | |
4530 | target_async (inferior_event_handler, 0); | |
4531 | } | |
4532 | else | |
4533 | { | |
4534 | gdb_assert (wait_status != NULL); | |
4535 | strcpy (rs->buf, wait_status); | |
4536 | rs->cached_wait_status = 1; | |
4537 | } | |
4538 | } | |
4539 | else | |
4540 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4541 | } |
4542 | ||
4543 | static void | |
136d6dae | 4544 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4545 | { |
136d6dae | 4546 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4547 | } |
4548 | ||
c906108c SS |
4549 | /* Convert hex digit A to a number. */ |
4550 | ||
30559e10 | 4551 | static int |
fba45db2 | 4552 | fromhex (int a) |
c906108c SS |
4553 | { |
4554 | if (a >= '0' && a <= '9') | |
4555 | return a - '0'; | |
4556 | else if (a >= 'a' && a <= 'f') | |
4557 | return a - 'a' + 10; | |
4558 | else if (a >= 'A' && a <= 'F') | |
4559 | return a - 'A' + 10; | |
c5aa993b | 4560 | else |
8a3fe4f8 | 4561 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4562 | } |
4563 | ||
00bf0b85 | 4564 | int |
cfd77fa1 | 4565 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4566 | { |
4567 | int i; | |
4568 | ||
30559e10 MS |
4569 | for (i = 0; i < count; i++) |
4570 | { | |
4571 | if (hex[0] == 0 || hex[1] == 0) | |
4572 | { | |
4573 | /* Hex string is short, or of uneven length. | |
23860348 | 4574 | Return the count that has been converted so far. */ |
30559e10 MS |
4575 | return i; |
4576 | } | |
4577 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4578 | hex += 2; | |
4579 | } | |
4580 | return i; | |
4581 | } | |
4582 | ||
c906108c SS |
4583 | /* Convert number NIB to a hex digit. */ |
4584 | ||
4585 | static int | |
fba45db2 | 4586 | tohex (int nib) |
c906108c SS |
4587 | { |
4588 | if (nib < 10) | |
c5aa993b | 4589 | return '0' + nib; |
c906108c | 4590 | else |
c5aa993b | 4591 | return 'a' + nib - 10; |
c906108c | 4592 | } |
30559e10 | 4593 | |
00bf0b85 | 4594 | int |
cfd77fa1 | 4595 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4596 | { |
4597 | int i; | |
a744cf53 | 4598 | |
23860348 | 4599 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4600 | if (count == 0) |
cfd77fa1 | 4601 | count = strlen ((char *) bin); |
30559e10 MS |
4602 | |
4603 | for (i = 0; i < count; i++) | |
4604 | { | |
4605 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4606 | *hex++ = tohex (*bin++ & 0xf); | |
4607 | } | |
4608 | *hex = 0; | |
4609 | return i; | |
4610 | } | |
c906108c | 4611 | \f |
506fb367 DJ |
4612 | /* Check for the availability of vCont. This function should also check |
4613 | the response. */ | |
c906108c SS |
4614 | |
4615 | static void | |
6d820c5c | 4616 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4617 | { |
2e9f7625 | 4618 | char *buf; |
6d820c5c | 4619 | |
2e9f7625 DJ |
4620 | strcpy (rs->buf, "vCont?"); |
4621 | putpkt (rs->buf); | |
6d820c5c | 4622 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4623 | buf = rs->buf; |
c906108c | 4624 | |
506fb367 DJ |
4625 | /* Make sure that the features we assume are supported. */ |
4626 | if (strncmp (buf, "vCont", 5) == 0) | |
4627 | { | |
4628 | char *p = &buf[5]; | |
4629 | int support_s, support_S, support_c, support_C; | |
4630 | ||
4631 | support_s = 0; | |
4632 | support_S = 0; | |
4633 | support_c = 0; | |
4634 | support_C = 0; | |
74531fed | 4635 | rs->support_vCont_t = 0; |
506fb367 DJ |
4636 | while (p && *p == ';') |
4637 | { | |
4638 | p++; | |
4639 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4640 | support_s = 1; | |
4641 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4642 | support_S = 1; | |
4643 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4644 | support_c = 1; | |
4645 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4646 | support_C = 1; | |
74531fed PA |
4647 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4648 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4649 | |
4650 | p = strchr (p, ';'); | |
4651 | } | |
c906108c | 4652 | |
506fb367 DJ |
4653 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4654 | BUF will make packet_ok disable the packet. */ | |
4655 | if (!support_s || !support_S || !support_c || !support_C) | |
4656 | buf[0] = 0; | |
4657 | } | |
c906108c | 4658 | |
444abaca | 4659 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4660 | } |
c906108c | 4661 | |
0d8f58ca PA |
4662 | /* Helper function for building "vCont" resumptions. Write a |
4663 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4664 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4665 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4666 | resumed thread should be single-stepped and/or signalled. If PTID | |
4667 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4668 | represents a process, then all threads of the process are resumed; | |
4669 | the thread to be stepped and/or signalled is given in the global | |
4670 | INFERIOR_PTID. */ | |
4671 | ||
4672 | static char * | |
4673 | append_resumption (char *p, char *endp, | |
2ea28649 | 4674 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4675 | { |
4676 | struct remote_state *rs = get_remote_state (); | |
4677 | ||
a493e3e2 | 4678 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4679 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
4680 | else if (step) | |
4681 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4682 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4683 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4684 | else | |
4685 | p += xsnprintf (p, endp - p, ";c"); | |
4686 | ||
4687 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4688 | { | |
4689 | ptid_t nptid; | |
4690 | ||
4691 | /* All (-1) threads of process. */ | |
4692 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4693 | ||
4694 | p += xsnprintf (p, endp - p, ":"); | |
4695 | p = write_ptid (p, endp, nptid); | |
4696 | } | |
4697 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4698 | { | |
4699 | p += xsnprintf (p, endp - p, ":"); | |
4700 | p = write_ptid (p, endp, ptid); | |
4701 | } | |
4702 | ||
4703 | return p; | |
4704 | } | |
4705 | ||
e5ef252a PA |
4706 | /* Append a vCont continue-with-signal action for threads that have a |
4707 | non-zero stop signal. */ | |
4708 | ||
4709 | static char * | |
4710 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4711 | { | |
4712 | struct thread_info *thread; | |
4713 | ||
4714 | ALL_THREADS (thread) | |
4715 | if (ptid_match (thread->ptid, ptid) | |
4716 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4717 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4718 | && signal_pass_state (thread->suspend.stop_signal)) | |
4719 | { | |
4720 | p = append_resumption (p, endp, thread->ptid, | |
4721 | 0, thread->suspend.stop_signal); | |
4722 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4723 | } | |
4724 | ||
4725 | return p; | |
4726 | } | |
4727 | ||
506fb367 DJ |
4728 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4729 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4730 | resumed thread should be single-stepped and/or signalled. If PTID |
4731 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4732 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4733 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4734 | |
506fb367 DJ |
4735 | This function issues a strict subset of all possible vCont commands at the |
4736 | moment. */ | |
44eaed12 | 4737 | |
506fb367 | 4738 | static int |
2ea28649 | 4739 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4740 | { |
4741 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4742 | char *p; |
4743 | char *endp; | |
44eaed12 | 4744 | |
444abaca | 4745 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4746 | remote_vcont_probe (rs); |
44eaed12 | 4747 | |
444abaca | 4748 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4749 | return 0; |
44eaed12 | 4750 | |
82f73884 PA |
4751 | p = rs->buf; |
4752 | endp = rs->buf + get_remote_packet_size (); | |
4753 | ||
506fb367 DJ |
4754 | /* If we could generate a wider range of packets, we'd have to worry |
4755 | about overflowing BUF. Should there be a generic | |
4756 | "multi-part-packet" packet? */ | |
4757 | ||
0d8f58ca PA |
4758 | p += xsnprintf (p, endp - p, "vCont"); |
4759 | ||
79d7f229 | 4760 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4761 | { |
79d7f229 PA |
4762 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4763 | so we don't have any TID numbers the inferior will | |
4764 | understand. Make sure to only send forms that do not specify | |
4765 | a TID. */ | |
a9cbf802 | 4766 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4767 | } |
0d8f58ca | 4768 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4769 | { |
0d8f58ca PA |
4770 | /* Resume all threads (of all processes, or of a single |
4771 | process), with preference for INFERIOR_PTID. This assumes | |
4772 | inferior_ptid belongs to the set of all threads we are about | |
4773 | to resume. */ | |
a493e3e2 | 4774 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4775 | { |
0d8f58ca PA |
4776 | /* Step inferior_ptid, with or without signal. */ |
4777 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4778 | } |
0d8f58ca | 4779 | |
e5ef252a PA |
4780 | /* Also pass down any pending signaled resumption for other |
4781 | threads not the current. */ | |
4782 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4783 | ||
0d8f58ca | 4784 | /* And continue others without a signal. */ |
a493e3e2 | 4785 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4786 | } |
4787 | else | |
506fb367 DJ |
4788 | { |
4789 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4790 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4791 | } |
c906108c | 4792 | |
82f73884 PA |
4793 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4794 | putpkt (rs->buf); | |
506fb367 | 4795 | |
74531fed PA |
4796 | if (non_stop) |
4797 | { | |
4798 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4799 | reply will be reported asynchronously by means of a `%Stop' | |
4800 | notification. */ | |
4801 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4802 | if (strcmp (rs->buf, "OK") != 0) | |
4803 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4804 | } | |
4805 | ||
506fb367 | 4806 | return 1; |
c906108c | 4807 | } |
43ff13b4 | 4808 | |
506fb367 DJ |
4809 | /* Tell the remote machine to resume. */ |
4810 | ||
a493e3e2 | 4811 | static enum gdb_signal last_sent_signal = GDB_SIGNAL_0; |
506fb367 DJ |
4812 | |
4813 | static int last_sent_step; | |
4814 | ||
43ff13b4 | 4815 | static void |
28439f5e | 4816 | remote_resume (struct target_ops *ops, |
2ea28649 | 4817 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4818 | { |
d01949b6 | 4819 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4820 | char *buf; |
43ff13b4 | 4821 | |
722247f1 YQ |
4822 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
4823 | (explained in remote-notif.c:handle_notification) so | |
4824 | remote_notif_process is not called. We need find a place where | |
4825 | it is safe to start a 'vNotif' sequence. It is good to do it | |
4826 | before resuming inferior, because inferior was stopped and no RSP | |
4827 | traffic at that moment. */ | |
4828 | if (!non_stop) | |
4829 | remote_notif_process (¬if_client_stop); | |
4830 | ||
43ff13b4 JM |
4831 | last_sent_signal = siggnal; |
4832 | last_sent_step = step; | |
4833 | ||
506fb367 | 4834 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4835 | /* No reverse support (yet) for vCont. */ |
4836 | if (execution_direction != EXEC_REVERSE) | |
4837 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4838 | goto done; | |
506fb367 | 4839 | |
79d7f229 PA |
4840 | /* All other supported resume packets do use Hc, so set the continue |
4841 | thread. */ | |
4842 | if (ptid_equal (ptid, minus_one_ptid)) | |
4843 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4844 | else |
79d7f229 | 4845 | set_continue_thread (ptid); |
506fb367 | 4846 | |
2e9f7625 | 4847 | buf = rs->buf; |
b2175913 MS |
4848 | if (execution_direction == EXEC_REVERSE) |
4849 | { | |
4850 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4851 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4852 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4853 | siggnal); |
40ab02ce MS |
4854 | |
4855 | if (step | |
4856 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4857 | error (_("Remote reverse-step not supported.")); | |
4858 | if (!step | |
4859 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4860 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4861 | |
b2175913 MS |
4862 | strcpy (buf, step ? "bs" : "bc"); |
4863 | } | |
a493e3e2 | 4864 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4865 | { |
4866 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4867 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4868 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4869 | buf[3] = '\0'; |
4870 | } | |
4871 | else | |
c5aa993b | 4872 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4873 | |
44eaed12 | 4874 | putpkt (buf); |
43ff13b4 | 4875 | |
75c99385 | 4876 | done: |
2acceee2 | 4877 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4878 | with the event loop. NOTE: this is the one place where all the |
4879 | execution commands end up. We could alternatively do this in each | |
23860348 | 4880 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4881 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4882 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4883 | NOT asynchronously. */ |
362646f5 | 4884 | if (target_can_async_p ()) |
2acceee2 | 4885 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4886 | |
4887 | /* We've just told the target to resume. The remote server will | |
4888 | wait for the inferior to stop, and then send a stop reply. In | |
4889 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4890 | because the stub wouldn't be ready to process it. This applies |
4891 | only to the base all-stop protocol, however. In non-stop (which | |
4892 | only supports vCont), the stub replies with an "OK", and is | |
4893 | immediate able to process further serial input. */ | |
4894 | if (!non_stop) | |
4895 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4896 | } |
c906108c | 4897 | \f |
43ff13b4 JM |
4898 | |
4899 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4900 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4901 | static void |
fba45db2 | 4902 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4903 | { |
43ff13b4 JM |
4904 | signal (SIGINT, handle_remote_sigint); |
4905 | } | |
4906 | ||
23860348 | 4907 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4908 | static void |
fba45db2 | 4909 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4910 | { |
4911 | signal (sig, handle_remote_sigint_twice); | |
f6fbab7d | 4912 | mark_async_signal_handler (sigint_remote_token); |
43ff13b4 JM |
4913 | } |
4914 | ||
4915 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4916 | sent once. It will take effect the second time that the user sends | |
23860348 | 4917 | a ^C. */ |
43ff13b4 | 4918 | static void |
fba45db2 | 4919 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4920 | { |
b803fb0f | 4921 | signal (sig, handle_remote_sigint); |
f6fbab7d | 4922 | mark_async_signal_handler (sigint_remote_twice_token); |
43ff13b4 JM |
4923 | } |
4924 | ||
6426a772 | 4925 | /* Perform the real interruption of the target execution, in response |
23860348 | 4926 | to a ^C. */ |
c5aa993b | 4927 | static void |
fba45db2 | 4928 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4929 | { |
4930 | if (remote_debug) | |
248fd3bf | 4931 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4932 | |
94cc34af | 4933 | target_stop (inferior_ptid); |
43ff13b4 JM |
4934 | } |
4935 | ||
0df8b418 | 4936 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4937 | up on the target alltogether. */ |
2df3850c | 4938 | void |
fba45db2 | 4939 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4940 | { |
2df3850c | 4941 | if (remote_debug) |
248fd3bf | 4942 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4943 | |
4944 | interrupt_query (); | |
43ff13b4 JM |
4945 | } |
4946 | ||
4947 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4948 | stopped. */ |
6426a772 JM |
4949 | static void |
4950 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4951 | { |
4952 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4953 | } |
4954 | ||
c906108c SS |
4955 | /* Send ^C to target to halt it. Target will respond, and send us a |
4956 | packet. */ | |
507f3c78 | 4957 | static void (*ofunc) (int); |
c906108c | 4958 | |
0df8b418 MS |
4959 | /* The command line interface's stop routine. This function is installed |
4960 | as a signal handler for SIGINT. The first time a user requests a | |
4961 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4962 | response from the target (it didn't stop when the user requested it), |
23860348 | 4963 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4964 | static void |
fba45db2 | 4965 | remote_interrupt (int signo) |
c906108c | 4966 | { |
23860348 | 4967 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4968 | signal (signo, remote_interrupt_twice); |
4969 | ||
b803fb0f | 4970 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4971 | } |
4972 | ||
4973 | /* The user typed ^C twice. */ | |
4974 | ||
4975 | static void | |
fba45db2 | 4976 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4977 | { |
4978 | signal (signo, ofunc); | |
b803fb0f | 4979 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4980 | signal (signo, remote_interrupt); |
4981 | } | |
7a292a7a | 4982 | |
74531fed PA |
4983 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4984 | thread, all threads of a remote process, or all threads of all | |
4985 | processes. */ | |
4986 | ||
4987 | static void | |
4988 | remote_stop_ns (ptid_t ptid) | |
4989 | { | |
4990 | struct remote_state *rs = get_remote_state (); | |
4991 | char *p = rs->buf; | |
4992 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4993 | |
4994 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4995 | remote_vcont_probe (rs); | |
4996 | ||
4997 | if (!rs->support_vCont_t) | |
4998 | error (_("Remote server does not support stopping threads")); | |
4999 | ||
f91d3df5 PA |
5000 | if (ptid_equal (ptid, minus_one_ptid) |
5001 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
5002 | p += xsnprintf (p, endp - p, "vCont;t"); |
5003 | else | |
5004 | { | |
5005 | ptid_t nptid; | |
5006 | ||
74531fed PA |
5007 | p += xsnprintf (p, endp - p, "vCont;t:"); |
5008 | ||
5009 | if (ptid_is_pid (ptid)) | |
5010 | /* All (-1) threads of process. */ | |
5011 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
5012 | else | |
5013 | { | |
5014 | /* Small optimization: if we already have a stop reply for | |
5015 | this thread, no use in telling the stub we want this | |
5016 | stopped. */ | |
5017 | if (peek_stop_reply (ptid)) | |
5018 | return; | |
5019 | ||
5020 | nptid = ptid; | |
5021 | } | |
5022 | ||
a9cbf802 | 5023 | write_ptid (p, endp, nptid); |
74531fed PA |
5024 | } |
5025 | ||
5026 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5027 | come in asynchronously by notification. */ | |
5028 | putpkt (rs->buf); | |
5029 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5030 | if (strcmp (rs->buf, "OK") != 0) | |
5031 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5032 | } | |
5033 | ||
5034 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5035 | remote target. It is undefined which thread of which process | |
5036 | reports the stop. */ | |
5037 | ||
5038 | static void | |
5039 | remote_stop_as (ptid_t ptid) | |
5040 | { | |
5041 | struct remote_state *rs = get_remote_state (); | |
5042 | ||
3a29589a DJ |
5043 | rs->ctrlc_pending_p = 1; |
5044 | ||
74531fed PA |
5045 | /* If the inferior is stopped already, but the core didn't know |
5046 | about it yet, just ignore the request. The cached wait status | |
5047 | will be collected in remote_wait. */ | |
5048 | if (rs->cached_wait_status) | |
5049 | return; | |
5050 | ||
9a7071a8 JB |
5051 | /* Send interrupt_sequence to remote target. */ |
5052 | send_interrupt_sequence (); | |
74531fed PA |
5053 | } |
5054 | ||
0df8b418 | 5055 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5056 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5057 | will eventually end up here. */ |
74531fed | 5058 | |
c906108c | 5059 | static void |
94cc34af | 5060 | remote_stop (ptid_t ptid) |
c906108c | 5061 | { |
7a292a7a | 5062 | if (remote_debug) |
0f71a2f6 | 5063 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5064 | |
74531fed PA |
5065 | if (non_stop) |
5066 | remote_stop_ns (ptid); | |
c906108c | 5067 | else |
74531fed | 5068 | remote_stop_as (ptid); |
c906108c SS |
5069 | } |
5070 | ||
5071 | /* Ask the user what to do when an interrupt is received. */ | |
5072 | ||
5073 | static void | |
fba45db2 | 5074 | interrupt_query (void) |
c906108c SS |
5075 | { |
5076 | target_terminal_ours (); | |
5077 | ||
74531fed | 5078 | if (target_can_async_p ()) |
c906108c | 5079 | { |
74531fed | 5080 | signal (SIGINT, handle_sigint); |
315a522e | 5081 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 5082 | } |
74531fed PA |
5083 | else |
5084 | { | |
9e2f0ad4 HZ |
5085 | if (query (_("Interrupted while waiting for the program.\n\ |
5086 | Give up (and stop debugging it)? "))) | |
74531fed PA |
5087 | { |
5088 | pop_target (); | |
5089 | deprecated_throw_reason (RETURN_QUIT); | |
5090 | } | |
5091 | } | |
c906108c SS |
5092 | |
5093 | target_terminal_inferior (); | |
5094 | } | |
5095 | ||
6426a772 JM |
5096 | /* Enable/disable target terminal ownership. Most targets can use |
5097 | terminal groups to control terminal ownership. Remote targets are | |
5098 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5099 | is required. */ |
6426a772 JM |
5100 | |
5101 | static void | |
75c99385 | 5102 | remote_terminal_inferior (void) |
6426a772 | 5103 | { |
c6ebd6cf | 5104 | if (!target_async_permitted) |
75c99385 PA |
5105 | /* Nothing to do. */ |
5106 | return; | |
5107 | ||
d9d2d8b6 PA |
5108 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5109 | idempotent. The event-loop GDB talking to an asynchronous target | |
5110 | with a synchronous command calls this function from both | |
5111 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5112 | transfer the terminal to the target when it shouldn't this guard | |
5113 | can go away. */ | |
6426a772 JM |
5114 | if (!remote_async_terminal_ours_p) |
5115 | return; | |
5116 | delete_file_handler (input_fd); | |
5117 | remote_async_terminal_ours_p = 0; | |
5118 | initialize_sigint_signal_handler (); | |
5119 | /* NOTE: At this point we could also register our selves as the | |
5120 | recipient of all input. Any characters typed could then be | |
23860348 | 5121 | passed on down to the target. */ |
6426a772 JM |
5122 | } |
5123 | ||
5124 | static void | |
75c99385 | 5125 | remote_terminal_ours (void) |
6426a772 | 5126 | { |
c6ebd6cf | 5127 | if (!target_async_permitted) |
75c99385 PA |
5128 | /* Nothing to do. */ |
5129 | return; | |
5130 | ||
5131 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5132 | if (remote_async_terminal_ours_p) |
5133 | return; | |
5134 | cleanup_sigint_signal_handler (NULL); | |
5135 | add_file_handler (input_fd, stdin_event_handler, 0); | |
5136 | remote_async_terminal_ours_p = 1; | |
5137 | } | |
5138 | ||
176a6961 | 5139 | static void |
917317f4 | 5140 | remote_console_output (char *msg) |
c906108c SS |
5141 | { |
5142 | char *p; | |
5143 | ||
c5aa993b | 5144 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5145 | { |
5146 | char tb[2]; | |
5147 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5148 | |
c906108c SS |
5149 | tb[0] = c; |
5150 | tb[1] = 0; | |
43ff13b4 | 5151 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5152 | } |
00db5b94 PA |
5153 | gdb_flush (gdb_stdtarg); |
5154 | } | |
74531fed PA |
5155 | |
5156 | typedef struct cached_reg | |
5157 | { | |
5158 | int num; | |
5159 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5160 | } cached_reg_t; | |
5161 | ||
5162 | DEF_VEC_O(cached_reg_t); | |
5163 | ||
722247f1 | 5164 | typedef struct stop_reply |
74531fed | 5165 | { |
722247f1 | 5166 | struct notif_event base; |
74531fed | 5167 | |
722247f1 | 5168 | /* The identifier of the thread about this event */ |
74531fed PA |
5169 | ptid_t ptid; |
5170 | ||
5171 | struct target_waitstatus ws; | |
5172 | ||
15148d6a PA |
5173 | /* Expedited registers. This makes remote debugging a bit more |
5174 | efficient for those targets that provide critical registers as | |
5175 | part of their normal status mechanism (as another roundtrip to | |
5176 | fetch them is avoided). */ | |
74531fed PA |
5177 | VEC(cached_reg_t) *regcache; |
5178 | ||
5179 | int stopped_by_watchpoint_p; | |
5180 | CORE_ADDR watch_data_address; | |
5181 | ||
5182 | int solibs_changed; | |
5183 | int replay_event; | |
dc146f7c VP |
5184 | |
5185 | int core; | |
722247f1 | 5186 | } *stop_reply_p; |
a744cf53 | 5187 | |
722247f1 YQ |
5188 | DECLARE_QUEUE_P (stop_reply_p); |
5189 | DEFINE_QUEUE_P (stop_reply_p); | |
5190 | /* The list of already fetched and acknowledged stop events. This | |
5191 | queue is used for notification Stop, and other notifications | |
5192 | don't need queue for their events, because the notification events | |
5193 | of Stop can't be consumed immediately, so that events should be | |
5194 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5195 | time. Other notifications can consume their events immediately, | |
5196 | so queue is not needed for them. */ | |
5197 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
74531fed PA |
5198 | |
5199 | static void | |
5200 | stop_reply_xfree (struct stop_reply *r) | |
5201 | { | |
5202 | if (r != NULL) | |
5203 | { | |
5204 | VEC_free (cached_reg_t, r->regcache); | |
5205 | xfree (r); | |
5206 | } | |
c906108c SS |
5207 | } |
5208 | ||
722247f1 YQ |
5209 | static void |
5210 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5211 | struct notif_event *event) | |
5212 | { | |
5213 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5214 | } | |
5215 | ||
5216 | static void | |
5217 | remote_notif_stop_ack (struct notif_client *self, char *buf, | |
5218 | struct notif_event *event) | |
5219 | { | |
5220 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
5221 | ||
5222 | /* acknowledge */ | |
5223 | putpkt ((char *) self->ack_command); | |
5224 | ||
5225 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
5226 | /* We got an unknown stop reply. */ | |
5227 | error (_("Unknown stop reply")); | |
5228 | ||
5229 | push_stop_reply (stop_reply); | |
5230 | } | |
5231 | ||
5232 | static int | |
5233 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5234 | { | |
5235 | /* We can't get pending events in remote_notif_process for | |
5236 | notification stop, and we have to do this in remote_wait_ns | |
5237 | instead. If we fetch all queued events from stub, remote stub | |
5238 | may exit and we have no chance to process them back in | |
5239 | remote_wait_ns. */ | |
5240 | mark_async_event_handler (remote_async_inferior_event_token); | |
5241 | return 0; | |
5242 | } | |
5243 | ||
5244 | static void | |
5245 | stop_reply_dtr (struct notif_event *event) | |
5246 | { | |
5247 | struct stop_reply *r = (struct stop_reply *) event; | |
5248 | ||
5249 | VEC_free (cached_reg_t, r->regcache); | |
5250 | } | |
5251 | ||
5252 | static struct notif_event * | |
5253 | remote_notif_stop_alloc_reply (void) | |
5254 | { | |
5255 | struct notif_event *r | |
5256 | = (struct notif_event *) XMALLOC (struct stop_reply); | |
5257 | ||
5258 | r->dtr = stop_reply_dtr; | |
5259 | ||
5260 | return r; | |
5261 | } | |
5262 | ||
5263 | /* A client of notification Stop. */ | |
5264 | ||
5265 | struct notif_client notif_client_stop = | |
5266 | { | |
5267 | "Stop", | |
5268 | "vStopped", | |
5269 | remote_notif_stop_parse, | |
5270 | remote_notif_stop_ack, | |
5271 | remote_notif_stop_can_get_pending_events, | |
5272 | remote_notif_stop_alloc_reply, | |
5273 | NULL, | |
5274 | }; | |
5275 | ||
5276 | /* A parameter to pass data in and out. */ | |
5277 | ||
5278 | struct queue_iter_param | |
5279 | { | |
5280 | void *input; | |
5281 | struct stop_reply *output; | |
5282 | }; | |
5283 | ||
5284 | /* Remove all queue elements meet the condition it checks. */ | |
5285 | ||
5286 | static int | |
5287 | remote_notif_remove_all (QUEUE (stop_reply_p) *q, | |
5288 | QUEUE_ITER (stop_reply_p) *iter, | |
5289 | stop_reply_p event, | |
5290 | void *data) | |
5291 | { | |
5292 | struct queue_iter_param *param = data; | |
5293 | struct inferior *inf = param->input; | |
5294 | ||
5295 | if (inf == NULL || ptid_get_pid (event->ptid) == inf->pid) | |
5296 | { | |
5297 | stop_reply_xfree (event); | |
5298 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5299 | } | |
5300 | ||
5301 | return 1; | |
5302 | } | |
5303 | ||
5f4cf0bb | 5304 | /* Discard all pending stop replies of inferior INF. If INF is NULL, |
74531fed | 5305 | discard everything. */ |
c906108c | 5306 | |
74531fed | 5307 | static void |
5f4cf0bb | 5308 | discard_pending_stop_replies (struct inferior *inf) |
c906108c | 5309 | { |
722247f1 YQ |
5310 | int i; |
5311 | struct queue_iter_param param; | |
5312 | struct stop_reply *reply | |
5313 | = (struct stop_reply *) notif_client_stop.pending_event; | |
c906108c | 5314 | |
74531fed | 5315 | /* Discard the in-flight notification. */ |
722247f1 | 5316 | if (reply != NULL |
5f4cf0bb | 5317 | && (inf == NULL |
722247f1 | 5318 | || ptid_get_pid (reply->ptid) == inf->pid)) |
74531fed | 5319 | { |
722247f1 YQ |
5320 | stop_reply_xfree (reply); |
5321 | notif_client_stop.pending_event = NULL; | |
74531fed | 5322 | } |
c906108c | 5323 | |
722247f1 YQ |
5324 | param.input = inf; |
5325 | param.output = NULL; | |
74531fed PA |
5326 | /* Discard the stop replies we have already pulled with |
5327 | vStopped. */ | |
722247f1 YQ |
5328 | QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5329 | remote_notif_remove_all, ¶m); | |
5330 | } | |
74531fed | 5331 | |
722247f1 YQ |
5332 | /* A parameter to pass data in and out. */ |
5333 | ||
5334 | static int | |
5335 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, | |
5336 | QUEUE_ITER (stop_reply_p) *iter, | |
5337 | stop_reply_p event, | |
5338 | void *data) | |
5339 | { | |
5340 | struct queue_iter_param *param = data; | |
5341 | ptid_t *ptid = param->input; | |
5342 | ||
5343 | if (ptid_match (event->ptid, *ptid)) | |
5344 | { | |
5345 | param->output = event; | |
5346 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5347 | return 0; | |
c8e38a49 | 5348 | } |
722247f1 YQ |
5349 | |
5350 | return 1; | |
74531fed | 5351 | } |
43ff13b4 | 5352 | |
722247f1 YQ |
5353 | /* Remove the first reply in 'stop_reply_queue' which matches |
5354 | PTID. */ | |
2e9f7625 | 5355 | |
722247f1 YQ |
5356 | static struct stop_reply * |
5357 | remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 5358 | { |
722247f1 YQ |
5359 | struct queue_iter_param param; |
5360 | ||
5361 | param.input = &ptid; | |
5362 | param.output = NULL; | |
5363 | ||
5364 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5365 | remote_notif_remove_once_on_match, ¶m); | |
5366 | if (notif_debug) | |
5367 | fprintf_unfiltered (gdb_stdlog, | |
5368 | "notif: discard queued event: 'Stop' in %s\n", | |
5369 | target_pid_to_str (ptid)); | |
a744cf53 | 5370 | |
722247f1 | 5371 | return param.output; |
74531fed | 5372 | } |
75c99385 | 5373 | |
74531fed PA |
5374 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5375 | remove it from the queue, and return it. Returns NULL if none is | |
5376 | found. If there are still queued events left to process, tell the | |
5377 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5378 | |
74531fed PA |
5379 | static struct stop_reply * |
5380 | queued_stop_reply (ptid_t ptid) | |
5381 | { | |
722247f1 | 5382 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 5383 | |
722247f1 | 5384 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed PA |
5385 | /* There's still at least an event left. */ |
5386 | mark_async_event_handler (remote_async_inferior_event_token); | |
5387 | ||
722247f1 | 5388 | return r; |
74531fed PA |
5389 | } |
5390 | ||
5391 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5392 | know that we now have at least one queued event left to pass to the | |
5393 | core side, tell the event loop to get back to target_wait soon. */ | |
5394 | ||
5395 | static void | |
5396 | push_stop_reply (struct stop_reply *new_event) | |
5397 | { | |
722247f1 | 5398 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); |
74531fed | 5399 | |
722247f1 YQ |
5400 | if (notif_debug) |
5401 | fprintf_unfiltered (gdb_stdlog, | |
5402 | "notif: push 'Stop' %s to queue %d\n", | |
5403 | target_pid_to_str (new_event->ptid), | |
5404 | QUEUE_length (stop_reply_p, | |
5405 | stop_reply_queue)); | |
74531fed PA |
5406 | |
5407 | mark_async_event_handler (remote_async_inferior_event_token); | |
5408 | } | |
5409 | ||
722247f1 YQ |
5410 | static int |
5411 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5412 | QUEUE_ITER (stop_reply_p) *iter, | |
5413 | struct stop_reply *event, | |
5414 | void *data) | |
5415 | { | |
5416 | ptid_t *ptid = data; | |
5417 | ||
5418 | return !(ptid_equal (*ptid, event->ptid) | |
5419 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5420 | } | |
5421 | ||
74531fed PA |
5422 | /* Returns true if we have a stop reply for PTID. */ |
5423 | ||
5424 | static int | |
5425 | peek_stop_reply (ptid_t ptid) | |
5426 | { | |
722247f1 YQ |
5427 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, |
5428 | stop_reply_match_ptid_and_ws, &ptid); | |
74531fed PA |
5429 | } |
5430 | ||
5431 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5432 | result is stored in EVENT, or throws an error. */ | |
5433 | ||
5434 | static void | |
5435 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5436 | { | |
5437 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5438 | ULONGEST addr; | |
5439 | char *p; | |
5440 | ||
5441 | event->ptid = null_ptid; | |
5442 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5443 | event->ws.value.integer = 0; | |
5444 | event->solibs_changed = 0; | |
5445 | event->replay_event = 0; | |
5446 | event->stopped_by_watchpoint_p = 0; | |
5447 | event->regcache = NULL; | |
dc146f7c | 5448 | event->core = -1; |
74531fed PA |
5449 | |
5450 | switch (buf[0]) | |
5451 | { | |
5452 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5453 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5454 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5455 | ss = signal number | |
5456 | n... = register number | |
5457 | r... = register contents | |
5458 | */ | |
5459 | ||
5460 | p = &buf[3]; /* after Txx */ | |
5461 | while (*p) | |
5462 | { | |
5463 | char *p1; | |
5464 | char *p_temp; | |
5465 | int fieldsize; | |
5466 | LONGEST pnum = 0; | |
43ff13b4 | 5467 | |
cea39f65 MS |
5468 | /* If the packet contains a register number, save it in |
5469 | pnum and set p1 to point to the character following it. | |
5470 | Otherwise p1 points to p. */ | |
3c3bea1c | 5471 | |
cea39f65 MS |
5472 | /* If this packet is an awatch packet, don't parse the 'a' |
5473 | as a register number. */ | |
c8e38a49 | 5474 | |
dc146f7c VP |
5475 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5476 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5477 | { |
5478 | /* Read the ``P'' register number. */ | |
5479 | pnum = strtol (p, &p_temp, 16); | |
5480 | p1 = p_temp; | |
5481 | } | |
5482 | else | |
5483 | p1 = p; | |
802188a7 | 5484 | |
cea39f65 MS |
5485 | if (p1 == p) /* No register number present here. */ |
5486 | { | |
5487 | p1 = strchr (p, ':'); | |
5488 | if (p1 == NULL) | |
5489 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5490 | Packet: '%s'\n"), |
cea39f65 MS |
5491 | p, buf); |
5492 | if (strncmp (p, "thread", p1 - p) == 0) | |
5493 | event->ptid = read_ptid (++p1, &p); | |
5494 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5495 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5496 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5497 | { | |
5498 | event->stopped_by_watchpoint_p = 1; | |
5499 | p = unpack_varlen_hex (++p1, &addr); | |
5500 | event->watch_data_address = (CORE_ADDR) addr; | |
5501 | } | |
5502 | else if (strncmp (p, "library", p1 - p) == 0) | |
5503 | { | |
5504 | p1++; | |
5505 | p_temp = p1; | |
5506 | while (*p_temp && *p_temp != ';') | |
5507 | p_temp++; | |
c8e38a49 | 5508 | |
cea39f65 MS |
5509 | event->solibs_changed = 1; |
5510 | p = p_temp; | |
5511 | } | |
5512 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5513 | { | |
5514 | /* NO_HISTORY event. | |
5515 | p1 will indicate "begin" or "end", but | |
5516 | it makes no difference for now, so ignore it. */ | |
5517 | event->replay_event = 1; | |
5518 | p_temp = strchr (p1 + 1, ';'); | |
5519 | if (p_temp) | |
c8e38a49 | 5520 | p = p_temp; |
cea39f65 | 5521 | } |
dc146f7c VP |
5522 | else if (strncmp (p, "core", p1 - p) == 0) |
5523 | { | |
5524 | ULONGEST c; | |
a744cf53 | 5525 | |
dc146f7c VP |
5526 | p = unpack_varlen_hex (++p1, &c); |
5527 | event->core = c; | |
5528 | } | |
cea39f65 MS |
5529 | else |
5530 | { | |
5531 | /* Silently skip unknown optional info. */ | |
5532 | p_temp = strchr (p1 + 1, ';'); | |
5533 | if (p_temp) | |
5534 | p = p_temp; | |
5535 | } | |
5536 | } | |
5537 | else | |
5538 | { | |
5539 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5540 | cached_reg_t cached_reg; | |
74531fed | 5541 | |
cea39f65 | 5542 | p = p1; |
75c99385 | 5543 | |
cea39f65 MS |
5544 | if (*p != ':') |
5545 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5546 | Packet: '%s'\n"), |
cea39f65 MS |
5547 | p, buf); |
5548 | ++p; | |
43ff13b4 | 5549 | |
cea39f65 MS |
5550 | if (reg == NULL) |
5551 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5552 | Packet: '%s'\n"), |
7c47795c | 5553 | hex_string (pnum), p, buf); |
c8e38a49 | 5554 | |
cea39f65 | 5555 | cached_reg.num = reg->regnum; |
4100683b | 5556 | |
cea39f65 | 5557 | fieldsize = hex2bin (p, cached_reg.data, |
f5656ead | 5558 | register_size (target_gdbarch (), |
cea39f65 MS |
5559 | reg->regnum)); |
5560 | p += 2 * fieldsize; | |
f5656ead | 5561 | if (fieldsize < register_size (target_gdbarch (), |
cea39f65 MS |
5562 | reg->regnum)) |
5563 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5564 | |
cea39f65 MS |
5565 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5566 | } | |
c8e38a49 | 5567 | |
cea39f65 MS |
5568 | if (*p != ';') |
5569 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5570 | buf, p); | |
5571 | ++p; | |
5572 | } | |
c8e38a49 PA |
5573 | /* fall through */ |
5574 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5575 | if (event->solibs_changed) |
5576 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5577 | else if (event->replay_event) | |
5578 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5579 | else |
5580 | { | |
74531fed | 5581 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
2ea28649 | 5582 | event->ws.value.sig = (enum gdb_signal) |
c8e38a49 PA |
5583 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5584 | } | |
5585 | break; | |
5586 | case 'W': /* Target exited. */ | |
5587 | case 'X': | |
5588 | { | |
5589 | char *p; | |
5590 | int pid; | |
5591 | ULONGEST value; | |
82f73884 | 5592 | |
c8e38a49 PA |
5593 | /* GDB used to accept only 2 hex chars here. Stubs should |
5594 | only send more if they detect GDB supports multi-process | |
5595 | support. */ | |
5596 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5597 | |
c8e38a49 PA |
5598 | if (buf[0] == 'W') |
5599 | { | |
5600 | /* The remote process exited. */ | |
74531fed PA |
5601 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5602 | event->ws.value.integer = value; | |
c8e38a49 PA |
5603 | } |
5604 | else | |
5605 | { | |
5606 | /* The remote process exited with a signal. */ | |
74531fed | 5607 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
2ea28649 | 5608 | event->ws.value.sig = (enum gdb_signal) value; |
c8e38a49 | 5609 | } |
82f73884 | 5610 | |
c8e38a49 PA |
5611 | /* If no process is specified, assume inferior_ptid. */ |
5612 | pid = ptid_get_pid (inferior_ptid); | |
5613 | if (*p == '\0') | |
5614 | ; | |
5615 | else if (*p == ';') | |
5616 | { | |
5617 | p++; | |
5618 | ||
5619 | if (p == '\0') | |
82f73884 | 5620 | ; |
c8e38a49 PA |
5621 | else if (strncmp (p, |
5622 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5623 | { |
c8e38a49 | 5624 | ULONGEST upid; |
a744cf53 | 5625 | |
c8e38a49 PA |
5626 | p += sizeof ("process:") - 1; |
5627 | unpack_varlen_hex (p, &upid); | |
5628 | pid = upid; | |
82f73884 PA |
5629 | } |
5630 | else | |
5631 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5632 | } |
c8e38a49 PA |
5633 | else |
5634 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5635 | event->ptid = pid_to_ptid (pid); |
5636 | } | |
5637 | break; | |
5638 | } | |
5639 | ||
5640 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5641 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5642 | } | |
5643 | ||
722247f1 YQ |
5644 | /* When the stub wants to tell GDB about a new notification reply, it |
5645 | sends a notification (%Stop, for example). Those can come it at | |
5646 | any time, hence, we have to make sure that any pending | |
5647 | putpkt/getpkt sequence we're making is finished, before querying | |
5648 | the stub for more events with the corresponding ack command | |
5649 | (vStopped, for example). E.g., if we started a vStopped sequence | |
5650 | immediately upon receiving the notification, something like this | |
5651 | could happen: | |
74531fed PA |
5652 | |
5653 | 1.1) --> Hg 1 | |
5654 | 1.2) <-- OK | |
5655 | 1.3) --> g | |
5656 | 1.4) <-- %Stop | |
5657 | 1.5) --> vStopped | |
5658 | 1.6) <-- (registers reply to step #1.3) | |
5659 | ||
5660 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5661 | query. | |
5662 | ||
796cb314 | 5663 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
5664 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
5665 | doing whatever we were doing: | |
5666 | ||
5667 | 2.1) --> Hg 1 | |
5668 | 2.2) <-- OK | |
5669 | 2.3) --> g | |
5670 | 2.4) <-- %Stop | |
5671 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5672 | 2.5) <-- (registers reply to step #2.3) | |
5673 | ||
5674 | Eventualy after step #2.5, we return to the event loop, which | |
5675 | notices there's an event on the | |
5676 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5677 | associated callback --- the function below. At this point, we're | |
5678 | always safe to start a vStopped sequence. : | |
5679 | ||
5680 | 2.6) --> vStopped | |
5681 | 2.7) <-- T05 thread:2 | |
5682 | 2.8) --> vStopped | |
5683 | 2.9) --> OK | |
5684 | */ | |
5685 | ||
722247f1 YQ |
5686 | void |
5687 | remote_notif_get_pending_events (struct notif_client *nc) | |
74531fed PA |
5688 | { |
5689 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5690 | |
722247f1 | 5691 | if (nc->pending_event) |
74531fed | 5692 | { |
722247f1 YQ |
5693 | if (notif_debug) |
5694 | fprintf_unfiltered (gdb_stdlog, | |
5695 | "notif: process: '%s' ack pending event\n", | |
5696 | nc->name); | |
74531fed | 5697 | |
722247f1 YQ |
5698 | /* acknowledge */ |
5699 | nc->ack (nc, rs->buf, nc->pending_event); | |
5700 | nc->pending_event = NULL; | |
74531fed PA |
5701 | |
5702 | while (1) | |
5703 | { | |
5704 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5705 | if (strcmp (rs->buf, "OK") == 0) | |
5706 | break; | |
5707 | else | |
722247f1 | 5708 | remote_notif_ack (nc, rs->buf); |
74531fed PA |
5709 | } |
5710 | } | |
722247f1 YQ |
5711 | else |
5712 | { | |
5713 | if (notif_debug) | |
5714 | fprintf_unfiltered (gdb_stdlog, | |
5715 | "notif: process: '%s' no pending reply\n", | |
5716 | nc->name); | |
5717 | } | |
74531fed PA |
5718 | } |
5719 | ||
74531fed PA |
5720 | /* Called when it is decided that STOP_REPLY holds the info of the |
5721 | event that is to be returned to the core. This function always | |
5722 | destroys STOP_REPLY. */ | |
5723 | ||
5724 | static ptid_t | |
5725 | process_stop_reply (struct stop_reply *stop_reply, | |
5726 | struct target_waitstatus *status) | |
5727 | { | |
5728 | ptid_t ptid; | |
5729 | ||
5730 | *status = stop_reply->ws; | |
5731 | ptid = stop_reply->ptid; | |
5732 | ||
5733 | /* If no thread/process was reported by the stub, assume the current | |
5734 | inferior. */ | |
5735 | if (ptid_equal (ptid, null_ptid)) | |
5736 | ptid = inferior_ptid; | |
5737 | ||
5f3563ea PA |
5738 | if (status->kind != TARGET_WAITKIND_EXITED |
5739 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5740 | { |
5f3563ea PA |
5741 | /* Expedited registers. */ |
5742 | if (stop_reply->regcache) | |
5743 | { | |
217f1f79 | 5744 | struct regcache *regcache |
f5656ead | 5745 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5f3563ea PA |
5746 | cached_reg_t *reg; |
5747 | int ix; | |
5748 | ||
5749 | for (ix = 0; | |
5750 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5751 | ix++) | |
217f1f79 | 5752 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5753 | VEC_free (cached_reg_t, stop_reply->regcache); |
5754 | } | |
74531fed | 5755 | |
5f3563ea PA |
5756 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5757 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5758 | |
5759 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5760 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5761 | } |
5762 | ||
74531fed PA |
5763 | stop_reply_xfree (stop_reply); |
5764 | return ptid; | |
5765 | } | |
5766 | ||
5767 | /* The non-stop mode version of target_wait. */ | |
5768 | ||
5769 | static ptid_t | |
47608cb1 | 5770 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5771 | { |
5772 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5773 | struct stop_reply *stop_reply; |
5774 | int ret; | |
fee9eda9 | 5775 | int is_notif = 0; |
74531fed PA |
5776 | |
5777 | /* If in non-stop mode, get out of getpkt even if a | |
5778 | notification is received. */ | |
5779 | ||
5780 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
fee9eda9 | 5781 | 0 /* forever */, &is_notif); |
74531fed PA |
5782 | while (1) |
5783 | { | |
fee9eda9 | 5784 | if (ret != -1 && !is_notif) |
74531fed PA |
5785 | switch (rs->buf[0]) |
5786 | { | |
5787 | case 'E': /* Error of some sort. */ | |
5788 | /* We're out of sync with the target now. Did it continue | |
5789 | or not? We can't tell which thread it was in non-stop, | |
5790 | so just ignore this. */ | |
5791 | warning (_("Remote failure reply: %s"), rs->buf); | |
5792 | break; | |
5793 | case 'O': /* Console output. */ | |
5794 | remote_console_output (rs->buf + 1); | |
5795 | break; | |
5796 | default: | |
5797 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5798 | break; | |
5799 | } | |
5800 | ||
5801 | /* Acknowledge a pending stop reply that may have arrived in the | |
5802 | mean time. */ | |
722247f1 YQ |
5803 | if (notif_client_stop.pending_event != NULL) |
5804 | remote_notif_get_pending_events (¬if_client_stop); | |
74531fed PA |
5805 | |
5806 | /* If indeed we noticed a stop reply, we're done. */ | |
5807 | stop_reply = queued_stop_reply (ptid); | |
5808 | if (stop_reply != NULL) | |
5809 | return process_stop_reply (stop_reply, status); | |
5810 | ||
47608cb1 | 5811 | /* Still no event. If we're just polling for an event, then |
74531fed | 5812 | return to the event loop. */ |
47608cb1 | 5813 | if (options & TARGET_WNOHANG) |
74531fed PA |
5814 | { |
5815 | status->kind = TARGET_WAITKIND_IGNORE; | |
5816 | return minus_one_ptid; | |
5817 | } | |
5818 | ||
47608cb1 | 5819 | /* Otherwise do a blocking wait. */ |
74531fed | 5820 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
fee9eda9 | 5821 | 1 /* forever */, &is_notif); |
74531fed PA |
5822 | } |
5823 | } | |
5824 | ||
5825 | /* Wait until the remote machine stops, then return, storing status in | |
5826 | STATUS just as `wait' would. */ | |
5827 | ||
5828 | static ptid_t | |
47608cb1 | 5829 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5830 | { |
5831 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5832 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5833 | char *buf; |
74531fed PA |
5834 | struct stop_reply *stop_reply; |
5835 | ||
47608cb1 PA |
5836 | again: |
5837 | ||
74531fed PA |
5838 | status->kind = TARGET_WAITKIND_IGNORE; |
5839 | status->value.integer = 0; | |
5840 | ||
5841 | stop_reply = queued_stop_reply (ptid); | |
5842 | if (stop_reply != NULL) | |
5843 | return process_stop_reply (stop_reply, status); | |
5844 | ||
5845 | if (rs->cached_wait_status) | |
5846 | /* Use the cached wait status, but only once. */ | |
5847 | rs->cached_wait_status = 0; | |
5848 | else | |
5849 | { | |
5850 | int ret; | |
722247f1 | 5851 | int is_notif; |
74531fed PA |
5852 | |
5853 | if (!target_is_async_p ()) | |
5854 | { | |
5855 | ofunc = signal (SIGINT, remote_interrupt); | |
5856 | /* If the user hit C-c before this packet, or between packets, | |
5857 | pretend that it was hit right here. */ | |
522002f9 | 5858 | if (check_quit_flag ()) |
74531fed | 5859 | { |
522002f9 | 5860 | clear_quit_flag (); |
74531fed PA |
5861 | remote_interrupt (SIGINT); |
5862 | } | |
5863 | } | |
5864 | ||
5865 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5866 | _never_ wait for ever -> test on target_is_async_p(). | |
5867 | However, before we do that we need to ensure that the caller | |
5868 | knows how to take the target into/out of async mode. */ | |
722247f1 YQ |
5869 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5870 | wait_forever_enabled_p, &is_notif); | |
5871 | ||
5872 | /* GDB gets a notification. Return to core as this event is | |
5873 | not interesting. */ | |
5874 | if (ret != -1 && is_notif) | |
5875 | return minus_one_ptid; | |
5876 | ||
74531fed PA |
5877 | if (!target_is_async_p ()) |
5878 | signal (SIGINT, ofunc); | |
5879 | } | |
5880 | ||
5881 | buf = rs->buf; | |
5882 | ||
5883 | remote_stopped_by_watchpoint_p = 0; | |
5884 | ||
5885 | /* We got something. */ | |
5886 | rs->waiting_for_stop_reply = 0; | |
5887 | ||
3a29589a DJ |
5888 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5889 | an 'F' or 'O' packet. */ | |
5890 | if (buf[0] != 'F' && buf[0] != 'O') | |
5891 | rs->ctrlc_pending_p = 0; | |
5892 | ||
74531fed PA |
5893 | switch (buf[0]) |
5894 | { | |
5895 | case 'E': /* Error of some sort. */ | |
5896 | /* We're out of sync with the target now. Did it continue or | |
5897 | not? Not is more likely, so report a stop. */ | |
5898 | warning (_("Remote failure reply: %s"), buf); | |
5899 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 5900 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
5901 | break; |
5902 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5903 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5904 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5905 | break; |
5906 | case 'T': case 'S': case 'X': case 'W': | |
5907 | { | |
722247f1 YQ |
5908 | struct stop_reply *stop_reply |
5909 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
5910 | rs->buf); | |
74531fed | 5911 | |
74531fed | 5912 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
5913 | break; |
5914 | } | |
5915 | case 'O': /* Console output. */ | |
5916 | remote_console_output (buf + 1); | |
e24a49d8 | 5917 | |
c8e38a49 PA |
5918 | /* The target didn't really stop; keep waiting. */ |
5919 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5920 | |
c8e38a49 PA |
5921 | break; |
5922 | case '\0': | |
a493e3e2 | 5923 | if (last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
5924 | { |
5925 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5926 | remote system doesn't support it. */ | |
5927 | target_terminal_ours_for_output (); | |
5928 | printf_filtered | |
5929 | ("Can't send signals to this remote system. %s not sent.\n", | |
2ea28649 | 5930 | gdb_signal_to_name (last_sent_signal)); |
a493e3e2 | 5931 | last_sent_signal = GDB_SIGNAL_0; |
c8e38a49 PA |
5932 | target_terminal_inferior (); |
5933 | ||
5934 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5935 | putpkt ((char *) buf); | |
5936 | ||
5937 | /* We just told the target to resume, so a stop reply is in | |
5938 | order. */ | |
e24a49d8 | 5939 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5940 | break; |
43ff13b4 | 5941 | } |
c8e38a49 PA |
5942 | /* else fallthrough */ |
5943 | default: | |
5944 | warning (_("Invalid remote reply: %s"), buf); | |
5945 | /* Keep waiting. */ | |
5946 | rs->waiting_for_stop_reply = 1; | |
5947 | break; | |
43ff13b4 | 5948 | } |
c8e38a49 | 5949 | |
c8e38a49 | 5950 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5951 | { |
5952 | /* Nothing interesting happened. If we're doing a non-blocking | |
5953 | poll, we're done. Otherwise, go back to waiting. */ | |
5954 | if (options & TARGET_WNOHANG) | |
5955 | return minus_one_ptid; | |
5956 | else | |
5957 | goto again; | |
5958 | } | |
74531fed PA |
5959 | else if (status->kind != TARGET_WAITKIND_EXITED |
5960 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5961 | { |
5962 | if (!ptid_equal (event_ptid, null_ptid)) | |
5963 | record_currthread (event_ptid); | |
5964 | else | |
5965 | event_ptid = inferior_ptid; | |
43ff13b4 | 5966 | } |
74531fed PA |
5967 | else |
5968 | /* A process exit. Invalidate our notion of current thread. */ | |
5969 | record_currthread (minus_one_ptid); | |
79d7f229 | 5970 | |
82f73884 | 5971 | return event_ptid; |
43ff13b4 JM |
5972 | } |
5973 | ||
74531fed PA |
5974 | /* Wait until the remote machine stops, then return, storing status in |
5975 | STATUS just as `wait' would. */ | |
5976 | ||
c8e38a49 | 5977 | static ptid_t |
117de6a9 | 5978 | remote_wait (struct target_ops *ops, |
47608cb1 | 5979 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5980 | { |
5981 | ptid_t event_ptid; | |
5982 | ||
74531fed | 5983 | if (non_stop) |
47608cb1 | 5984 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5985 | else |
47608cb1 | 5986 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5987 | |
74531fed | 5988 | if (target_can_async_p ()) |
c8e38a49 | 5989 | { |
74531fed PA |
5990 | /* If there are are events left in the queue tell the event loop |
5991 | to return here. */ | |
722247f1 | 5992 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
74531fed | 5993 | mark_async_event_handler (remote_async_inferior_event_token); |
c8e38a49 | 5994 | } |
c8e38a49 PA |
5995 | |
5996 | return event_ptid; | |
5997 | } | |
5998 | ||
74ca34ce | 5999 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 6000 | |
b96ec7ac | 6001 | static int |
56be3814 | 6002 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
6003 | { |
6004 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 6005 | char *buf, *p; |
b96ec7ac AC |
6006 | char regp[MAX_REGISTER_SIZE]; |
6007 | int i; | |
6008 | ||
74ca34ce DJ |
6009 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
6010 | return 0; | |
6011 | ||
6012 | if (reg->pnum == -1) | |
6013 | return 0; | |
6014 | ||
2e9f7625 | 6015 | p = rs->buf; |
fcad0fa4 | 6016 | *p++ = 'p'; |
74ca34ce | 6017 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 6018 | *p++ = '\0'; |
1f4437a4 MS |
6019 | putpkt (rs->buf); |
6020 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 6021 | |
2e9f7625 DJ |
6022 | buf = rs->buf; |
6023 | ||
74ca34ce DJ |
6024 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
6025 | { | |
6026 | case PACKET_OK: | |
6027 | break; | |
6028 | case PACKET_UNKNOWN: | |
6029 | return 0; | |
6030 | case PACKET_ERROR: | |
27a9c0bf MS |
6031 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
6032 | gdbarch_register_name (get_regcache_arch (regcache), | |
6033 | reg->regnum), | |
6034 | buf); | |
74ca34ce | 6035 | } |
3f9a994c JB |
6036 | |
6037 | /* If this register is unfetchable, tell the regcache. */ | |
6038 | if (buf[0] == 'x') | |
8480adf2 | 6039 | { |
56be3814 | 6040 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 6041 | return 1; |
b96ec7ac | 6042 | } |
b96ec7ac | 6043 | |
3f9a994c JB |
6044 | /* Otherwise, parse and supply the value. */ |
6045 | p = buf; | |
6046 | i = 0; | |
6047 | while (p[0] != 0) | |
6048 | { | |
6049 | if (p[1] == 0) | |
74ca34ce | 6050 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
6051 | |
6052 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6053 | p += 2; | |
6054 | } | |
56be3814 | 6055 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 6056 | return 1; |
b96ec7ac AC |
6057 | } |
6058 | ||
74ca34ce DJ |
6059 | /* Fetch the registers included in the target's 'g' packet. */ |
6060 | ||
29709017 DJ |
6061 | static int |
6062 | send_g_packet (void) | |
c906108c | 6063 | { |
d01949b6 | 6064 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 6065 | int buf_len; |
c906108c | 6066 | |
bba74b36 | 6067 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 6068 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 6069 | |
29709017 DJ |
6070 | /* We can get out of synch in various cases. If the first character |
6071 | in the buffer is not a hex character, assume that has happened | |
6072 | and try to fetch another packet to read. */ | |
6073 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6074 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6075 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6076 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6077 | { | |
6078 | if (remote_debug) | |
6079 | fprintf_unfiltered (gdb_stdlog, | |
6080 | "Bad register packet; fetching a new packet\n"); | |
6081 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6082 | } | |
6083 | ||
74ca34ce DJ |
6084 | buf_len = strlen (rs->buf); |
6085 | ||
6086 | /* Sanity check the received packet. */ | |
6087 | if (buf_len % 2 != 0) | |
6088 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
6089 | |
6090 | return buf_len / 2; | |
6091 | } | |
6092 | ||
6093 | static void | |
56be3814 | 6094 | process_g_packet (struct regcache *regcache) |
29709017 | 6095 | { |
4a22f64d | 6096 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
6097 | struct remote_state *rs = get_remote_state (); |
6098 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6099 | int i, buf_len; | |
6100 | char *p; | |
6101 | char *regs; | |
6102 | ||
6103 | buf_len = strlen (rs->buf); | |
6104 | ||
6105 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
6106 | if (buf_len > 2 * rsa->sizeof_g_packet) |
6107 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6108 | ||
6109 | /* Save the size of the packet sent to us by the target. It is used | |
6110 | as a heuristic when determining the max size of packets that the | |
6111 | target can safely receive. */ | |
6112 | if (rsa->actual_register_packet_size == 0) | |
6113 | rsa->actual_register_packet_size = buf_len; | |
6114 | ||
6115 | /* If this is smaller than we guessed the 'g' packet would be, | |
6116 | update our records. A 'g' reply that doesn't include a register's | |
6117 | value implies either that the register is not available, or that | |
6118 | the 'p' packet must be used. */ | |
6119 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 6120 | { |
74ca34ce DJ |
6121 | rsa->sizeof_g_packet = buf_len / 2; |
6122 | ||
4a22f64d | 6123 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 6124 | { |
74ca34ce DJ |
6125 | if (rsa->regs[i].pnum == -1) |
6126 | continue; | |
6127 | ||
6128 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6129 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 6130 | else |
74ca34ce | 6131 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 6132 | } |
74ca34ce | 6133 | } |
b323314b | 6134 | |
74ca34ce | 6135 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
6136 | |
6137 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 6138 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 6139 | |
c906108c SS |
6140 | /* Reply describes registers byte by byte, each byte encoded as two |
6141 | hex characters. Suck them all up, then supply them to the | |
6142 | register cacheing/storage mechanism. */ | |
6143 | ||
74ca34ce | 6144 | p = rs->buf; |
ea9c271d | 6145 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6146 | { |
74ca34ce DJ |
6147 | if (p[0] == 0 || p[1] == 0) |
6148 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6149 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6150 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6151 | |
c906108c | 6152 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6153 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6154 | else |
6155 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6156 | p += 2; | |
6157 | } | |
6158 | ||
a744cf53 MS |
6159 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6160 | { | |
6161 | struct packet_reg *r = &rsa->regs[i]; | |
6162 | ||
6163 | if (r->in_g_packet) | |
6164 | { | |
6165 | if (r->offset * 2 >= strlen (rs->buf)) | |
6166 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6167 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6168 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6169 | else if (rs->buf[r->offset * 2] == 'x') |
6170 | { | |
6171 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6172 | /* The register isn't available, mark it as such (at | |
6173 | the same time setting the value to zero). */ | |
6174 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6175 | } | |
6176 | else | |
6177 | regcache_raw_supply (regcache, r->regnum, | |
6178 | regs + r->offset); | |
6179 | } | |
6180 | } | |
c906108c SS |
6181 | } |
6182 | ||
29709017 | 6183 | static void |
56be3814 | 6184 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6185 | { |
6186 | send_g_packet (); | |
56be3814 | 6187 | process_g_packet (regcache); |
29709017 DJ |
6188 | } |
6189 | ||
e6e4e701 PA |
6190 | /* Make the remote selected traceframe match GDB's selected |
6191 | traceframe. */ | |
6192 | ||
6193 | static void | |
6194 | set_remote_traceframe (void) | |
6195 | { | |
6196 | int newnum; | |
6197 | ||
6198 | if (remote_traceframe_number == get_traceframe_number ()) | |
6199 | return; | |
6200 | ||
6201 | /* Avoid recursion, remote_trace_find calls us again. */ | |
6202 | remote_traceframe_number = get_traceframe_number (); | |
6203 | ||
6204 | newnum = target_trace_find (tfind_number, | |
6205 | get_traceframe_number (), 0, 0, NULL); | |
6206 | ||
6207 | /* Should not happen. If it does, all bets are off. */ | |
6208 | if (newnum != get_traceframe_number ()) | |
6209 | warning (_("could not set remote traceframe")); | |
6210 | } | |
6211 | ||
74ca34ce | 6212 | static void |
28439f5e PA |
6213 | remote_fetch_registers (struct target_ops *ops, |
6214 | struct regcache *regcache, int regnum) | |
74ca34ce | 6215 | { |
74ca34ce DJ |
6216 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6217 | int i; | |
6218 | ||
e6e4e701 | 6219 | set_remote_traceframe (); |
79d7f229 | 6220 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6221 | |
6222 | if (regnum >= 0) | |
6223 | { | |
6224 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6225 | |
74ca34ce DJ |
6226 | gdb_assert (reg != NULL); |
6227 | ||
6228 | /* If this register might be in the 'g' packet, try that first - | |
6229 | we are likely to read more than one register. If this is the | |
6230 | first 'g' packet, we might be overly optimistic about its | |
6231 | contents, so fall back to 'p'. */ | |
6232 | if (reg->in_g_packet) | |
6233 | { | |
56be3814 | 6234 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6235 | if (reg->in_g_packet) |
6236 | return; | |
6237 | } | |
6238 | ||
56be3814 | 6239 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6240 | return; |
6241 | ||
6242 | /* This register is not available. */ | |
56be3814 | 6243 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6244 | |
6245 | return; | |
6246 | } | |
6247 | ||
56be3814 | 6248 | fetch_registers_using_g (regcache); |
74ca34ce | 6249 | |
4a22f64d | 6250 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6251 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6252 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6253 | { |
6254 | /* This register is not available. */ | |
56be3814 | 6255 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6256 | } |
6257 | } | |
6258 | ||
c906108c SS |
6259 | /* Prepare to store registers. Since we may send them all (using a |
6260 | 'G' request), we have to read out the ones we don't want to change | |
6261 | first. */ | |
6262 | ||
c5aa993b | 6263 | static void |
316f2060 | 6264 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 6265 | { |
ea9c271d | 6266 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6267 | int i; |
cfd77fa1 | 6268 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6269 | |
c906108c | 6270 | /* Make sure the entire registers array is valid. */ |
444abaca | 6271 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6272 | { |
6273 | case PACKET_DISABLE: | |
6274 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6275 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6276 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6277 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6278 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6279 | break; |
6280 | case PACKET_ENABLE: | |
6281 | break; | |
6282 | } | |
6283 | } | |
6284 | ||
ad10f812 | 6285 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6286 | packet was not recognized. */ |
5a2468f5 JM |
6287 | |
6288 | static int | |
1f4437a4 MS |
6289 | store_register_using_P (const struct regcache *regcache, |
6290 | struct packet_reg *reg) | |
5a2468f5 | 6291 | { |
4a22f64d | 6292 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6293 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6294 | /* Try storing a single register. */ |
6d820c5c | 6295 | char *buf = rs->buf; |
cfd77fa1 | 6296 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6297 | char *p; |
5a2468f5 | 6298 | |
74ca34ce DJ |
6299 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6300 | return 0; | |
6301 | ||
6302 | if (reg->pnum == -1) | |
6303 | return 0; | |
6304 | ||
ea9c271d | 6305 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6306 | p = buf + strlen (buf); |
56be3814 | 6307 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6308 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6309 | putpkt (rs->buf); |
6310 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6311 | |
74ca34ce DJ |
6312 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6313 | { | |
6314 | case PACKET_OK: | |
6315 | return 1; | |
6316 | case PACKET_ERROR: | |
27a9c0bf MS |
6317 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6318 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6319 | case PACKET_UNKNOWN: |
6320 | return 0; | |
6321 | default: | |
6322 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6323 | } | |
c906108c SS |
6324 | } |
6325 | ||
23860348 MS |
6326 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6327 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6328 | |
6329 | static void | |
56be3814 | 6330 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6331 | { |
d01949b6 | 6332 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6333 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6334 | gdb_byte *regs; |
c906108c SS |
6335 | char *p; |
6336 | ||
193cb69f AC |
6337 | /* Extract all the registers in the regcache copying them into a |
6338 | local buffer. */ | |
6339 | { | |
b323314b | 6340 | int i; |
a744cf53 | 6341 | |
ea9c271d DJ |
6342 | regs = alloca (rsa->sizeof_g_packet); |
6343 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6344 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6345 | { |
ea9c271d | 6346 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6347 | |
b323314b | 6348 | if (r->in_g_packet) |
56be3814 | 6349 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6350 | } |
6351 | } | |
c906108c SS |
6352 | |
6353 | /* Command describes registers byte by byte, | |
6354 | each byte encoded as two hex characters. */ | |
6d820c5c | 6355 | p = rs->buf; |
193cb69f | 6356 | *p++ = 'G'; |
74ca34ce DJ |
6357 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6358 | updated. */ | |
6359 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6360 | putpkt (rs->buf); |
6361 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6362 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6363 | error (_("Could not write registers; remote failure reply '%s'"), |
6364 | rs->buf); | |
c906108c | 6365 | } |
74ca34ce DJ |
6366 | |
6367 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6368 | of the register cache buffer. FIXME: ignores errors. */ | |
6369 | ||
6370 | static void | |
28439f5e PA |
6371 | remote_store_registers (struct target_ops *ops, |
6372 | struct regcache *regcache, int regnum) | |
74ca34ce | 6373 | { |
74ca34ce DJ |
6374 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6375 | int i; | |
6376 | ||
e6e4e701 | 6377 | set_remote_traceframe (); |
79d7f229 | 6378 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6379 | |
6380 | if (regnum >= 0) | |
6381 | { | |
6382 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6383 | |
74ca34ce DJ |
6384 | gdb_assert (reg != NULL); |
6385 | ||
6386 | /* Always prefer to store registers using the 'P' packet if | |
6387 | possible; we often change only a small number of registers. | |
6388 | Sometimes we change a larger number; we'd need help from a | |
6389 | higher layer to know to use 'G'. */ | |
56be3814 | 6390 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6391 | return; |
6392 | ||
6393 | /* For now, don't complain if we have no way to write the | |
6394 | register. GDB loses track of unavailable registers too | |
6395 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6396 | any way to read the register, either... */ |
74ca34ce DJ |
6397 | if (!reg->in_g_packet) |
6398 | return; | |
6399 | ||
56be3814 | 6400 | store_registers_using_G (regcache); |
74ca34ce DJ |
6401 | return; |
6402 | } | |
6403 | ||
56be3814 | 6404 | store_registers_using_G (regcache); |
74ca34ce | 6405 | |
4a22f64d | 6406 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6407 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6408 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6409 | /* See above for why we do not issue an error here. */ |
6410 | continue; | |
6411 | } | |
c906108c SS |
6412 | \f |
6413 | ||
6414 | /* Return the number of hex digits in num. */ | |
6415 | ||
6416 | static int | |
fba45db2 | 6417 | hexnumlen (ULONGEST num) |
c906108c SS |
6418 | { |
6419 | int i; | |
6420 | ||
6421 | for (i = 0; num != 0; i++) | |
6422 | num >>= 4; | |
6423 | ||
6424 | return max (i, 1); | |
6425 | } | |
6426 | ||
2df3850c | 6427 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6428 | |
6429 | static int | |
fba45db2 | 6430 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6431 | { |
c906108c | 6432 | int len = hexnumlen (num); |
a744cf53 | 6433 | |
2df3850c JM |
6434 | return hexnumnstr (buf, num, len); |
6435 | } | |
6436 | ||
c906108c | 6437 | |
2df3850c | 6438 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6439 | |
2df3850c | 6440 | static int |
fba45db2 | 6441 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6442 | { |
6443 | int i; | |
6444 | ||
6445 | buf[width] = '\0'; | |
6446 | ||
6447 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6448 | { |
c5aa993b | 6449 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6450 | num >>= 4; |
6451 | } | |
6452 | ||
2df3850c | 6453 | return width; |
c906108c SS |
6454 | } |
6455 | ||
23860348 | 6456 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6457 | |
6458 | static CORE_ADDR | |
fba45db2 | 6459 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6460 | { |
883b9c6c | 6461 | unsigned int address_size = remote_address_size; |
a744cf53 | 6462 | |
911c95a5 UW |
6463 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6464 | if (!address_size) | |
f5656ead | 6465 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
6466 | |
6467 | if (address_size > 0 | |
6468 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6469 | { |
6470 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6471 | in a ULONGEST variable. */ |
c906108c | 6472 | ULONGEST mask = 1; |
a744cf53 | 6473 | |
911c95a5 | 6474 | mask = (mask << address_size) - 1; |
c906108c SS |
6475 | addr &= mask; |
6476 | } | |
6477 | return addr; | |
6478 | } | |
6479 | ||
a31ea83d DJ |
6480 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6481 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6482 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6483 | (which may be more than *OUT_LEN due to escape characters). The | |
6484 | total number of bytes in the output buffer will be at most | |
6485 | OUT_MAXLEN. */ | |
6486 | ||
6487 | static int | |
6488 | remote_escape_output (const gdb_byte *buffer, int len, | |
6489 | gdb_byte *out_buf, int *out_len, | |
6490 | int out_maxlen) | |
6491 | { | |
6492 | int input_index, output_index; | |
6493 | ||
6494 | output_index = 0; | |
6495 | for (input_index = 0; input_index < len; input_index++) | |
6496 | { | |
6497 | gdb_byte b = buffer[input_index]; | |
6498 | ||
6499 | if (b == '$' || b == '#' || b == '}') | |
6500 | { | |
6501 | /* These must be escaped. */ | |
6502 | if (output_index + 2 > out_maxlen) | |
6503 | break; | |
6504 | out_buf[output_index++] = '}'; | |
6505 | out_buf[output_index++] = b ^ 0x20; | |
6506 | } | |
6507 | else | |
6508 | { | |
6509 | if (output_index + 1 > out_maxlen) | |
6510 | break; | |
6511 | out_buf[output_index++] = b; | |
6512 | } | |
6513 | } | |
6514 | ||
6515 | *out_len = input_index; | |
6516 | return output_index; | |
6517 | } | |
6518 | ||
0876f84a DJ |
6519 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6520 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6521 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6522 | ||
6523 | This function reverses remote_escape_output. It allows more | |
6524 | escaped characters than that function does, in particular because | |
6525 | '*' must be escaped to avoid the run-length encoding processing | |
6526 | in reading packets. */ | |
6527 | ||
6528 | static int | |
6529 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6530 | gdb_byte *out_buf, int out_maxlen) | |
6531 | { | |
6532 | int input_index, output_index; | |
6533 | int escaped; | |
6534 | ||
6535 | output_index = 0; | |
6536 | escaped = 0; | |
6537 | for (input_index = 0; input_index < len; input_index++) | |
6538 | { | |
6539 | gdb_byte b = buffer[input_index]; | |
6540 | ||
6541 | if (output_index + 1 > out_maxlen) | |
6542 | { | |
6543 | warning (_("Received too much data from remote target;" | |
6544 | " ignoring overflow.")); | |
6545 | return output_index; | |
6546 | } | |
6547 | ||
6548 | if (escaped) | |
6549 | { | |
6550 | out_buf[output_index++] = b ^ 0x20; | |
6551 | escaped = 0; | |
6552 | } | |
6553 | else if (b == '}') | |
6554 | escaped = 1; | |
6555 | else | |
6556 | out_buf[output_index++] = b; | |
6557 | } | |
6558 | ||
6559 | if (escaped) | |
6560 | error (_("Unmatched escape character in target response.")); | |
6561 | ||
6562 | return output_index; | |
6563 | } | |
6564 | ||
c906108c SS |
6565 | /* Determine whether the remote target supports binary downloading. |
6566 | This is accomplished by sending a no-op memory write of zero length | |
6567 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6568 | the whole packet, since many stubs strip the eighth bit and |
6569 | subsequently compute a wrong checksum, which causes real havoc with | |
6570 | remote_write_bytes. | |
7a292a7a | 6571 | |
96baa820 | 6572 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6573 | clean. In cases like this, the user should clear "remote |
23860348 | 6574 | X-packet". */ |
96baa820 | 6575 | |
c906108c | 6576 | static void |
fba45db2 | 6577 | check_binary_download (CORE_ADDR addr) |
c906108c | 6578 | { |
d01949b6 | 6579 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6580 | |
444abaca | 6581 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6582 | { |
96baa820 JM |
6583 | case PACKET_DISABLE: |
6584 | break; | |
6585 | case PACKET_ENABLE: | |
6586 | break; | |
6587 | case PACKET_SUPPORT_UNKNOWN: | |
6588 | { | |
96baa820 | 6589 | char *p; |
802188a7 | 6590 | |
2e9f7625 | 6591 | p = rs->buf; |
96baa820 JM |
6592 | *p++ = 'X'; |
6593 | p += hexnumstr (p, (ULONGEST) addr); | |
6594 | *p++ = ','; | |
6595 | p += hexnumstr (p, (ULONGEST) 0); | |
6596 | *p++ = ':'; | |
6597 | *p = '\0'; | |
802188a7 | 6598 | |
2e9f7625 | 6599 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6600 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6601 | |
2e9f7625 | 6602 | if (rs->buf[0] == '\0') |
96baa820 JM |
6603 | { |
6604 | if (remote_debug) | |
6605 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6606 | "binary downloading NOT " |
6607 | "supported by target\n"); | |
444abaca | 6608 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6609 | } |
6610 | else | |
6611 | { | |
6612 | if (remote_debug) | |
6613 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6614 | "binary downloading supported by target\n"); |
444abaca | 6615 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6616 | } |
6617 | break; | |
6618 | } | |
c906108c SS |
6619 | } |
6620 | } | |
6621 | ||
6622 | /* Write memory data directly to the remote machine. | |
6623 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6624 | HEADER is the starting part of the packet. |
c906108c SS |
6625 | MEMADDR is the address in the remote memory space. |
6626 | MYADDR is the address of the buffer in our space. | |
6627 | LEN is the number of bytes. | |
a76d924d DJ |
6628 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6629 | should send data as binary ('X'), or hex-encoded ('M'). | |
6630 | ||
6631 | The function creates packet of the form | |
6632 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6633 | ||
6634 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6635 | ||
6636 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6637 | are omitted. | |
6638 | ||
6639 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6640 | error. Only transfer a single packet. */ |
c906108c | 6641 | |
a76d924d DJ |
6642 | static int |
6643 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
45aa4659 | 6644 | const gdb_byte *myaddr, ssize_t len, |
a76d924d | 6645 | char packet_format, int use_length) |
c906108c | 6646 | { |
6d820c5c | 6647 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6648 | char *p; |
a76d924d DJ |
6649 | char *plen = NULL; |
6650 | int plenlen = 0; | |
917317f4 JM |
6651 | int todo; |
6652 | int nr_bytes; | |
a257b5bb | 6653 | int payload_size; |
6765f3e5 | 6654 | int payload_length; |
a76d924d DJ |
6655 | int header_length; |
6656 | ||
6657 | if (packet_format != 'X' && packet_format != 'M') | |
6658 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6659 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6660 | |
b2182ed2 DJ |
6661 | if (len <= 0) |
6662 | return 0; | |
6663 | ||
3de11b2e | 6664 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6665 | |
6d820c5c DJ |
6666 | /* The packet buffer will be large enough for the payload; |
6667 | get_memory_packet_size ensures this. */ | |
a76d924d | 6668 | rs->buf[0] = '\0'; |
c906108c | 6669 | |
a257b5bb | 6670 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6671 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6672 | ||
a76d924d DJ |
6673 | payload_size -= strlen ("$,:#NN"); |
6674 | if (!use_length) | |
0df8b418 | 6675 | /* The comma won't be used. */ |
a76d924d DJ |
6676 | payload_size += 1; |
6677 | header_length = strlen (header); | |
6678 | payload_size -= header_length; | |
3de11b2e | 6679 | payload_size -= hexnumlen (memaddr); |
c906108c | 6680 | |
a76d924d | 6681 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6682 | |
a76d924d DJ |
6683 | strcat (rs->buf, header); |
6684 | p = rs->buf + strlen (header); | |
6685 | ||
6686 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6687 | if (packet_format == 'X') | |
c906108c | 6688 | { |
23860348 | 6689 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6690 | todo = min (len, payload_size); |
a76d924d DJ |
6691 | if (use_length) |
6692 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6693 | todo = min (todo, payload_size); |
a76d924d DJ |
6694 | } |
6695 | else | |
6696 | { | |
23860348 | 6697 | /* Num bytes that will fit. */ |
a257b5bb | 6698 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6699 | if (use_length) |
6700 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6701 | todo = min (todo, payload_size / 2); |
917317f4 | 6702 | } |
a76d924d | 6703 | |
3de11b2e NS |
6704 | if (todo <= 0) |
6705 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6706 | _("minimum packet size too small to write data")); |
802188a7 | 6707 | |
6765f3e5 DJ |
6708 | /* If we already need another packet, then try to align the end |
6709 | of this packet to a useful boundary. */ | |
6710 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6711 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6712 | ||
a257b5bb | 6713 | /* Append "<memaddr>". */ |
917317f4 JM |
6714 | memaddr = remote_address_masked (memaddr); |
6715 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6716 | |
a76d924d DJ |
6717 | if (use_length) |
6718 | { | |
6719 | /* Append ",". */ | |
6720 | *p++ = ','; | |
802188a7 | 6721 | |
a76d924d DJ |
6722 | /* Append <len>. Retain the location/size of <len>. It may need to |
6723 | be adjusted once the packet body has been created. */ | |
6724 | plen = p; | |
6725 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6726 | p += plenlen; | |
6727 | } | |
a257b5bb AC |
6728 | |
6729 | /* Append ":". */ | |
917317f4 JM |
6730 | *p++ = ':'; |
6731 | *p = '\0'; | |
802188a7 | 6732 | |
a257b5bb | 6733 | /* Append the packet body. */ |
a76d924d | 6734 | if (packet_format == 'X') |
917317f4 | 6735 | { |
917317f4 JM |
6736 | /* Binary mode. Send target system values byte by byte, in |
6737 | increasing byte addresses. Only escape certain critical | |
6738 | characters. */ | |
6765f3e5 DJ |
6739 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6740 | payload_size); | |
6741 | ||
6742 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6743 | a second try to keep the end of the packet aligned. Don't do |
6744 | this if the packet is tiny. */ | |
6745 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6746 | { |
6747 | int new_nr_bytes; | |
6748 | ||
6749 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6750 | - memaddr); | |
6751 | if (new_nr_bytes != nr_bytes) | |
6752 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6753 | p, &nr_bytes, | |
6754 | payload_size); | |
6755 | } | |
6756 | ||
6757 | p += payload_length; | |
a76d924d | 6758 | if (use_length && nr_bytes < todo) |
c906108c | 6759 | { |
802188a7 | 6760 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6761 | and we have actually sent fewer bytes than planned. |
6762 | Fix-up the length field of the packet. Use the same | |
6763 | number of characters as before. */ | |
917317f4 JM |
6764 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6765 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6766 | } |
a76d924d DJ |
6767 | } |
6768 | else | |
6769 | { | |
917317f4 JM |
6770 | /* Normal mode: Send target system values byte by byte, in |
6771 | increasing byte addresses. Each byte is encoded as a two hex | |
6772 | value. */ | |
2644f393 | 6773 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6774 | p += 2 * nr_bytes; |
c906108c | 6775 | } |
802188a7 | 6776 | |
2e9f7625 | 6777 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6778 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6779 | |
2e9f7625 | 6780 | if (rs->buf[0] == 'E') |
917317f4 JM |
6781 | { |
6782 | /* There is no correspondance between what the remote protocol | |
6783 | uses for errors and errno codes. We would like a cleaner way | |
6784 | of representing errors (big enough to include errno codes, | |
6785 | bfd_error codes, and others). But for now just return EIO. */ | |
6786 | errno = EIO; | |
6787 | return 0; | |
6788 | } | |
802188a7 | 6789 | |
23860348 MS |
6790 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6791 | fewer bytes than we'd planned. */ | |
917317f4 | 6792 | return nr_bytes; |
c906108c SS |
6793 | } |
6794 | ||
a76d924d DJ |
6795 | /* Write memory data directly to the remote machine. |
6796 | This does not inform the data cache; the data cache uses this. | |
6797 | MEMADDR is the address in the remote memory space. | |
6798 | MYADDR is the address of the buffer in our space. | |
6799 | LEN is the number of bytes. | |
6800 | ||
6801 | Returns number of bytes transferred, or 0 (setting errno) for | |
6802 | error. Only transfer a single packet. */ | |
6803 | ||
f7605bc2 | 6804 | static int |
45aa4659 | 6805 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
a76d924d DJ |
6806 | { |
6807 | char *packet_format = 0; | |
6808 | ||
6809 | /* Check whether the target supports binary download. */ | |
6810 | check_binary_download (memaddr); | |
6811 | ||
6812 | switch (remote_protocol_packets[PACKET_X].support) | |
6813 | { | |
6814 | case PACKET_ENABLE: | |
6815 | packet_format = "X"; | |
6816 | break; | |
6817 | case PACKET_DISABLE: | |
6818 | packet_format = "M"; | |
6819 | break; | |
6820 | case PACKET_SUPPORT_UNKNOWN: | |
6821 | internal_error (__FILE__, __LINE__, | |
6822 | _("remote_write_bytes: bad internal state")); | |
6823 | default: | |
6824 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6825 | } | |
6826 | ||
6827 | return remote_write_bytes_aux (packet_format, | |
6828 | memaddr, myaddr, len, packet_format[0], 1); | |
6829 | } | |
6830 | ||
c906108c SS |
6831 | /* Read memory data directly from the remote machine. |
6832 | This does not use the data cache; the data cache uses this. | |
6833 | MEMADDR is the address in the remote memory space. | |
6834 | MYADDR is the address of the buffer in our space. | |
6835 | LEN is the number of bytes. | |
6836 | ||
6837 | Returns number of bytes transferred, or 0 for error. */ | |
6838 | ||
f7605bc2 | 6839 | static int |
cfd77fa1 | 6840 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6841 | { |
6d820c5c | 6842 | struct remote_state *rs = get_remote_state (); |
23860348 | 6843 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6844 | char *p; |
6845 | int todo; | |
6846 | int i; | |
c906108c | 6847 | |
b2182ed2 DJ |
6848 | if (len <= 0) |
6849 | return 0; | |
6850 | ||
11cf8741 | 6851 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6852 | /* The packet buffer will be large enough for the payload; |
6853 | get_memory_packet_size ensures this. */ | |
c906108c | 6854 | |
f7605bc2 PA |
6855 | /* Number if bytes that will fit. */ |
6856 | todo = min (len, max_buf_size / 2); | |
c906108c | 6857 | |
f7605bc2 PA |
6858 | /* Construct "m"<memaddr>","<len>". */ |
6859 | memaddr = remote_address_masked (memaddr); | |
6860 | p = rs->buf; | |
6861 | *p++ = 'm'; | |
6862 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6863 | *p++ = ','; | |
6864 | p += hexnumstr (p, (ULONGEST) todo); | |
6865 | *p = '\0'; | |
6866 | putpkt (rs->buf); | |
6867 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6868 | if (rs->buf[0] == 'E' | |
6869 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6870 | && rs->buf[3] == '\0') | |
6871 | { | |
6872 | /* There is no correspondance between what the remote protocol | |
6873 | uses for errors and errno codes. We would like a cleaner way | |
6874 | of representing errors (big enough to include errno codes, | |
6875 | bfd_error codes, and others). But for now just return | |
6876 | EIO. */ | |
6877 | errno = EIO; | |
6878 | return 0; | |
c906108c | 6879 | } |
f7605bc2 PA |
6880 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6881 | characters. */ | |
6882 | p = rs->buf; | |
6883 | i = hex2bin (p, myaddr, todo); | |
6884 | /* Return what we have. Let higher layers handle partial reads. */ | |
6885 | return i; | |
c906108c | 6886 | } |
74531fed | 6887 | |
c906108c SS |
6888 | \f |
6889 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6890 | transferring to or from debugger address BUFFER. Write to inferior |
6891 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6892 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6893 | |
c906108c | 6894 | static int |
961cb7b5 | 6895 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6896 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6897 | struct target_ops *target) |
c906108c | 6898 | { |
4930751a C |
6899 | int res; |
6900 | ||
e6e4e701 | 6901 | set_remote_traceframe (); |
82f73884 PA |
6902 | set_general_thread (inferior_ptid); |
6903 | ||
4930751a | 6904 | if (should_write) |
b2182ed2 | 6905 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6906 | else |
b2182ed2 | 6907 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6908 | |
6909 | return res; | |
c906108c SS |
6910 | } |
6911 | ||
a76d924d DJ |
6912 | /* Sends a packet with content determined by the printf format string |
6913 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6914 | whether the packet was a success, a failure, or unknown. */ | |
6915 | ||
2c0b251b | 6916 | static enum packet_result |
a76d924d DJ |
6917 | remote_send_printf (const char *format, ...) |
6918 | { | |
6919 | struct remote_state *rs = get_remote_state (); | |
6920 | int max_size = get_remote_packet_size (); | |
a76d924d | 6921 | va_list ap; |
a744cf53 | 6922 | |
a76d924d DJ |
6923 | va_start (ap, format); |
6924 | ||
6925 | rs->buf[0] = '\0'; | |
6926 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6927 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6928 | |
6929 | if (putpkt (rs->buf) < 0) | |
6930 | error (_("Communication problem with target.")); | |
6931 | ||
6932 | rs->buf[0] = '\0'; | |
6933 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6934 | ||
6935 | return packet_check_result (rs->buf); | |
6936 | } | |
6937 | ||
6938 | static void | |
6939 | restore_remote_timeout (void *p) | |
6940 | { | |
6941 | int value = *(int *)p; | |
a744cf53 | 6942 | |
a76d924d DJ |
6943 | remote_timeout = value; |
6944 | } | |
6945 | ||
6946 | /* Flash writing can take quite some time. We'll set | |
6947 | effectively infinite timeout for flash operations. | |
6948 | In future, we'll need to decide on a better approach. */ | |
6949 | static const int remote_flash_timeout = 1000; | |
6950 | ||
6951 | static void | |
6952 | remote_flash_erase (struct target_ops *ops, | |
6953 | ULONGEST address, LONGEST length) | |
6954 | { | |
f5656ead | 6955 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d DJ |
6956 | int saved_remote_timeout = remote_timeout; |
6957 | enum packet_result ret; | |
a76d924d DJ |
6958 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6959 | &saved_remote_timeout); | |
a744cf53 | 6960 | |
a76d924d DJ |
6961 | remote_timeout = remote_flash_timeout; |
6962 | ||
6963 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6964 | phex (address, addr_size), |
a76d924d DJ |
6965 | phex (length, 4)); |
6966 | switch (ret) | |
6967 | { | |
6968 | case PACKET_UNKNOWN: | |
6969 | error (_("Remote target does not support flash erase")); | |
6970 | case PACKET_ERROR: | |
6971 | error (_("Error erasing flash with vFlashErase packet")); | |
6972 | default: | |
6973 | break; | |
6974 | } | |
6975 | ||
6976 | do_cleanups (back_to); | |
6977 | } | |
6978 | ||
6979 | static LONGEST | |
6980 | remote_flash_write (struct target_ops *ops, | |
6981 | ULONGEST address, LONGEST length, | |
6982 | const gdb_byte *data) | |
6983 | { | |
6984 | int saved_remote_timeout = remote_timeout; | |
6985 | int ret; | |
6986 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6987 | &saved_remote_timeout); | |
6988 | ||
6989 | remote_timeout = remote_flash_timeout; | |
6990 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6991 | do_cleanups (back_to); | |
6992 | ||
6993 | return ret; | |
6994 | } | |
6995 | ||
6996 | static void | |
6997 | remote_flash_done (struct target_ops *ops) | |
6998 | { | |
6999 | int saved_remote_timeout = remote_timeout; | |
7000 | int ret; | |
7001 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7002 | &saved_remote_timeout); | |
7003 | ||
7004 | remote_timeout = remote_flash_timeout; | |
7005 | ret = remote_send_printf ("vFlashDone"); | |
7006 | do_cleanups (back_to); | |
7007 | ||
7008 | switch (ret) | |
7009 | { | |
7010 | case PACKET_UNKNOWN: | |
7011 | error (_("Remote target does not support vFlashDone")); | |
7012 | case PACKET_ERROR: | |
7013 | error (_("Error finishing flash operation")); | |
7014 | default: | |
7015 | break; | |
7016 | } | |
7017 | } | |
7018 | ||
c906108c | 7019 | static void |
fba45db2 | 7020 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
7021 | { |
7022 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7023 | } | |
7024 | \f | |
7025 | /* Stuff for dealing with the packets which are part of this protocol. | |
7026 | See comment at top of file for details. */ | |
7027 | ||
0876f84a | 7028 | /* Read a single character from the remote end. */ |
c906108c SS |
7029 | |
7030 | static int | |
fba45db2 | 7031 | readchar (int timeout) |
c906108c SS |
7032 | { |
7033 | int ch; | |
7034 | ||
2cd58942 | 7035 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 7036 | |
2acceee2 | 7037 | if (ch >= 0) |
0876f84a | 7038 | return ch; |
2acceee2 JM |
7039 | |
7040 | switch ((enum serial_rc) ch) | |
c906108c SS |
7041 | { |
7042 | case SERIAL_EOF: | |
ce5ce7ed | 7043 | pop_target (); |
8a3fe4f8 | 7044 | error (_("Remote connection closed")); |
2acceee2 | 7045 | /* no return */ |
c906108c | 7046 | case SERIAL_ERROR: |
4ac8c4da | 7047 | pop_target (); |
3e43a32a MS |
7048 | perror_with_name (_("Remote communication error. " |
7049 | "Target disconnected.")); | |
2acceee2 | 7050 | /* no return */ |
c906108c | 7051 | case SERIAL_TIMEOUT: |
2acceee2 | 7052 | break; |
c906108c | 7053 | } |
2acceee2 | 7054 | return ch; |
c906108c SS |
7055 | } |
7056 | ||
6d820c5c DJ |
7057 | /* Send the command in *BUF to the remote machine, and read the reply |
7058 | into *BUF. Report an error if we get an error reply. Resize | |
7059 | *BUF using xrealloc if necessary to hold the result, and update | |
7060 | *SIZEOF_BUF. */ | |
c906108c SS |
7061 | |
7062 | static void | |
6d820c5c DJ |
7063 | remote_send (char **buf, |
7064 | long *sizeof_buf) | |
c906108c | 7065 | { |
6d820c5c | 7066 | putpkt (*buf); |
c2d11a7d | 7067 | getpkt (buf, sizeof_buf, 0); |
c906108c | 7068 | |
6d820c5c DJ |
7069 | if ((*buf)[0] == 'E') |
7070 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
7071 | } |
7072 | ||
6e5abd65 PA |
7073 | /* Return a pointer to an xmalloc'ed string representing an escaped |
7074 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7075 | etc. The caller is responsible for releasing the returned | |
7076 | memory. */ | |
7077 | ||
7078 | static char * | |
7079 | escape_buffer (const char *buf, int n) | |
7080 | { | |
7081 | struct cleanup *old_chain; | |
7082 | struct ui_file *stb; | |
7083 | char *str; | |
6e5abd65 PA |
7084 | |
7085 | stb = mem_fileopen (); | |
7086 | old_chain = make_cleanup_ui_file_delete (stb); | |
7087 | ||
7088 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 7089 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
7090 | do_cleanups (old_chain); |
7091 | return str; | |
7092 | } | |
7093 | ||
c906108c SS |
7094 | /* Display a null-terminated packet on stdout, for debugging, using C |
7095 | string notation. */ | |
7096 | ||
7097 | static void | |
fba45db2 | 7098 | print_packet (char *buf) |
c906108c SS |
7099 | { |
7100 | puts_filtered ("\""); | |
43e526b9 | 7101 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7102 | puts_filtered ("\""); |
7103 | } | |
7104 | ||
7105 | int | |
fba45db2 | 7106 | putpkt (char *buf) |
c906108c SS |
7107 | { |
7108 | return putpkt_binary (buf, strlen (buf)); | |
7109 | } | |
7110 | ||
7111 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7112 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7113 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7114 | and for a possible /0 if we are debugging (remote_debug) and want |
7115 | to print the sent packet as a string. */ | |
c906108c SS |
7116 | |
7117 | static int | |
fba45db2 | 7118 | putpkt_binary (char *buf, int cnt) |
c906108c | 7119 | { |
2d717e4f | 7120 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7121 | int i; |
7122 | unsigned char csum = 0; | |
11cf8741 | 7123 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7124 | |
c906108c SS |
7125 | int ch; |
7126 | int tcount = 0; | |
7127 | char *p; | |
dd61ec5c | 7128 | char *message; |
c906108c | 7129 | |
e24a49d8 PA |
7130 | /* Catch cases like trying to read memory or listing threads while |
7131 | we're waiting for a stop reply. The remote server wouldn't be | |
7132 | ready to handle this request, so we'd hang and timeout. We don't | |
7133 | have to worry about this in synchronous mode, because in that | |
7134 | case it's not possible to issue a command while the target is | |
74531fed PA |
7135 | running. This is not a problem in non-stop mode, because in that |
7136 | case, the stub is always ready to process serial input. */ | |
7137 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7138 | error (_("Cannot execute this command while the target is running.")); |
7139 | ||
2d717e4f DJ |
7140 | /* We're sending out a new packet. Make sure we don't look at a |
7141 | stale cached response. */ | |
7142 | rs->cached_wait_status = 0; | |
7143 | ||
c906108c SS |
7144 | /* Copy the packet into buffer BUF2, encapsulating it |
7145 | and giving it a checksum. */ | |
7146 | ||
c906108c SS |
7147 | p = buf2; |
7148 | *p++ = '$'; | |
7149 | ||
7150 | for (i = 0; i < cnt; i++) | |
7151 | { | |
7152 | csum += buf[i]; | |
7153 | *p++ = buf[i]; | |
7154 | } | |
7155 | *p++ = '#'; | |
7156 | *p++ = tohex ((csum >> 4) & 0xf); | |
7157 | *p++ = tohex (csum & 0xf); | |
7158 | ||
7159 | /* Send it over and over until we get a positive ack. */ | |
7160 | ||
7161 | while (1) | |
7162 | { | |
7163 | int started_error_output = 0; | |
7164 | ||
7165 | if (remote_debug) | |
7166 | { | |
6e5abd65 PA |
7167 | struct cleanup *old_chain; |
7168 | char *str; | |
7169 | ||
c906108c | 7170 | *p = '\0'; |
6e5abd65 PA |
7171 | str = escape_buffer (buf2, p - buf2); |
7172 | old_chain = make_cleanup (xfree, str); | |
7173 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7174 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7175 | do_cleanups (old_chain); |
c906108c | 7176 | } |
2cd58942 | 7177 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 7178 | perror_with_name (_("putpkt: write failed")); |
c906108c | 7179 | |
a6f3e723 SL |
7180 | /* If this is a no acks version of the remote protocol, send the |
7181 | packet and move on. */ | |
7182 | if (rs->noack_mode) | |
7183 | break; | |
7184 | ||
74531fed PA |
7185 | /* Read until either a timeout occurs (-2) or '+' is read. |
7186 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7187 | while (1) |
7188 | { | |
7189 | ch = readchar (remote_timeout); | |
7190 | ||
c5aa993b | 7191 | if (remote_debug) |
c906108c SS |
7192 | { |
7193 | switch (ch) | |
7194 | { | |
7195 | case '+': | |
1216fa2c | 7196 | case '-': |
c906108c SS |
7197 | case SERIAL_TIMEOUT: |
7198 | case '$': | |
74531fed | 7199 | case '%': |
c906108c SS |
7200 | if (started_error_output) |
7201 | { | |
7202 | putchar_unfiltered ('\n'); | |
7203 | started_error_output = 0; | |
7204 | } | |
7205 | } | |
7206 | } | |
7207 | ||
7208 | switch (ch) | |
7209 | { | |
7210 | case '+': | |
7211 | if (remote_debug) | |
0f71a2f6 | 7212 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7213 | return 1; |
1216fa2c AC |
7214 | case '-': |
7215 | if (remote_debug) | |
7216 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7217 | /* FALLTHROUGH */ |
c906108c | 7218 | case SERIAL_TIMEOUT: |
c5aa993b | 7219 | tcount++; |
c906108c SS |
7220 | if (tcount > 3) |
7221 | return 0; | |
23860348 | 7222 | break; /* Retransmit buffer. */ |
c906108c SS |
7223 | case '$': |
7224 | { | |
40e3f985 | 7225 | if (remote_debug) |
2bc416ba | 7226 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7227 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7228 | /* It's probably an old response sent because an ACK |
7229 | was lost. Gobble up the packet and ack it so it | |
7230 | doesn't get retransmitted when we resend this | |
7231 | packet. */ | |
6d820c5c | 7232 | skip_frame (); |
d6f7abdf | 7233 | serial_write (remote_desc, "+", 1); |
23860348 | 7234 | continue; /* Now, go look for +. */ |
c906108c | 7235 | } |
74531fed PA |
7236 | |
7237 | case '%': | |
7238 | { | |
7239 | int val; | |
7240 | ||
7241 | /* If we got a notification, handle it, and go back to looking | |
7242 | for an ack. */ | |
7243 | /* We've found the start of a notification. Now | |
7244 | collect the data. */ | |
7245 | val = read_frame (&rs->buf, &rs->buf_size); | |
7246 | if (val >= 0) | |
7247 | { | |
7248 | if (remote_debug) | |
7249 | { | |
6e5abd65 PA |
7250 | struct cleanup *old_chain; |
7251 | char *str; | |
7252 | ||
7253 | str = escape_buffer (rs->buf, val); | |
7254 | old_chain = make_cleanup (xfree, str); | |
7255 | fprintf_unfiltered (gdb_stdlog, | |
7256 | " Notification received: %s\n", | |
7257 | str); | |
7258 | do_cleanups (old_chain); | |
74531fed | 7259 | } |
8128fd8e | 7260 | handle_notification (rs->buf); |
74531fed PA |
7261 | /* We're in sync now, rewait for the ack. */ |
7262 | tcount = 0; | |
7263 | } | |
7264 | else | |
7265 | { | |
7266 | if (remote_debug) | |
7267 | { | |
7268 | if (!started_error_output) | |
7269 | { | |
7270 | started_error_output = 1; | |
7271 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7272 | } | |
7273 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7274 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7275 | } | |
7276 | } | |
7277 | continue; | |
7278 | } | |
7279 | /* fall-through */ | |
c906108c SS |
7280 | default: |
7281 | if (remote_debug) | |
7282 | { | |
7283 | if (!started_error_output) | |
7284 | { | |
7285 | started_error_output = 1; | |
0f71a2f6 | 7286 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7287 | } |
0f71a2f6 | 7288 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7289 | } |
7290 | continue; | |
7291 | } | |
23860348 | 7292 | break; /* Here to retransmit. */ |
c906108c SS |
7293 | } |
7294 | ||
7295 | #if 0 | |
7296 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7297 | able to get out next time we call QUIT, without anything as |
7298 | violent as interrupt_query. If we want to provide a way out of | |
7299 | here without getting to the next QUIT, it should be based on | |
7300 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7301 | if (quit_flag) |
7302 | { | |
7303 | quit_flag = 0; | |
7304 | interrupt_query (); | |
7305 | } | |
7306 | #endif | |
7307 | } | |
a6f3e723 | 7308 | return 0; |
c906108c SS |
7309 | } |
7310 | ||
6d820c5c DJ |
7311 | /* Come here after finding the start of a frame when we expected an |
7312 | ack. Do our best to discard the rest of this packet. */ | |
7313 | ||
7314 | static void | |
7315 | skip_frame (void) | |
7316 | { | |
7317 | int c; | |
7318 | ||
7319 | while (1) | |
7320 | { | |
7321 | c = readchar (remote_timeout); | |
7322 | switch (c) | |
7323 | { | |
7324 | case SERIAL_TIMEOUT: | |
7325 | /* Nothing we can do. */ | |
7326 | return; | |
7327 | case '#': | |
7328 | /* Discard the two bytes of checksum and stop. */ | |
7329 | c = readchar (remote_timeout); | |
7330 | if (c >= 0) | |
7331 | c = readchar (remote_timeout); | |
7332 | ||
7333 | return; | |
7334 | case '*': /* Run length encoding. */ | |
7335 | /* Discard the repeat count. */ | |
7336 | c = readchar (remote_timeout); | |
7337 | if (c < 0) | |
7338 | return; | |
7339 | break; | |
7340 | default: | |
7341 | /* A regular character. */ | |
7342 | break; | |
7343 | } | |
7344 | } | |
7345 | } | |
7346 | ||
c906108c | 7347 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7348 | into *BUF, verifying the checksum, length, and handling run-length |
7349 | compression. NUL terminate the buffer. If there is not enough room, | |
7350 | expand *BUF using xrealloc. | |
c906108c | 7351 | |
c2d11a7d JM |
7352 | Returns -1 on error, number of characters in buffer (ignoring the |
7353 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7354 | SERIAL status indications). */ |
c2d11a7d JM |
7355 | |
7356 | static long | |
6d820c5c DJ |
7357 | read_frame (char **buf_p, |
7358 | long *sizeof_buf) | |
c906108c SS |
7359 | { |
7360 | unsigned char csum; | |
c2d11a7d | 7361 | long bc; |
c906108c | 7362 | int c; |
6d820c5c | 7363 | char *buf = *buf_p; |
a6f3e723 | 7364 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7365 | |
7366 | csum = 0; | |
c2d11a7d | 7367 | bc = 0; |
c906108c SS |
7368 | |
7369 | while (1) | |
7370 | { | |
7371 | c = readchar (remote_timeout); | |
c906108c SS |
7372 | switch (c) |
7373 | { | |
7374 | case SERIAL_TIMEOUT: | |
7375 | if (remote_debug) | |
0f71a2f6 | 7376 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7377 | return -1; |
c906108c SS |
7378 | case '$': |
7379 | if (remote_debug) | |
0f71a2f6 JM |
7380 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7381 | gdb_stdlog); | |
23860348 | 7382 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7383 | case '#': |
7384 | { | |
7385 | unsigned char pktcsum; | |
e1b09194 AC |
7386 | int check_0 = 0; |
7387 | int check_1 = 0; | |
c906108c | 7388 | |
c2d11a7d | 7389 | buf[bc] = '\0'; |
c906108c | 7390 | |
e1b09194 AC |
7391 | check_0 = readchar (remote_timeout); |
7392 | if (check_0 >= 0) | |
7393 | check_1 = readchar (remote_timeout); | |
802188a7 | 7394 | |
e1b09194 AC |
7395 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7396 | { | |
7397 | if (remote_debug) | |
2bc416ba | 7398 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7399 | gdb_stdlog); |
e1b09194 AC |
7400 | return -1; |
7401 | } | |
7402 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7403 | { |
7404 | if (remote_debug) | |
2bc416ba | 7405 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7406 | gdb_stdlog); |
40e3f985 FN |
7407 | return -1; |
7408 | } | |
c906108c | 7409 | |
a6f3e723 SL |
7410 | /* Don't recompute the checksum; with no ack packets we |
7411 | don't have any way to indicate a packet retransmission | |
7412 | is necessary. */ | |
7413 | if (rs->noack_mode) | |
7414 | return bc; | |
7415 | ||
e1b09194 | 7416 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7417 | if (csum == pktcsum) |
c2d11a7d | 7418 | return bc; |
c906108c | 7419 | |
c5aa993b | 7420 | if (remote_debug) |
c906108c | 7421 | { |
6e5abd65 PA |
7422 | struct cleanup *old_chain; |
7423 | char *str; | |
7424 | ||
7425 | str = escape_buffer (buf, bc); | |
7426 | old_chain = make_cleanup (xfree, str); | |
7427 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7428 | "Bad checksum, sentsum=0x%x, " |
7429 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7430 | pktcsum, csum, str); |
7431 | do_cleanups (old_chain); | |
c906108c | 7432 | } |
c2d11a7d | 7433 | /* Number of characters in buffer ignoring trailing |
23860348 | 7434 | NULL. */ |
c2d11a7d | 7435 | return -1; |
c906108c | 7436 | } |
23860348 | 7437 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7438 | { |
7439 | int repeat; | |
c906108c | 7440 | |
a744cf53 | 7441 | csum += c; |
b4501125 AC |
7442 | c = readchar (remote_timeout); |
7443 | csum += c; | |
23860348 | 7444 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7445 | |
23860348 | 7446 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7447 | |
6d820c5c | 7448 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7449 | { |
6d820c5c DJ |
7450 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7451 | { | |
7452 | /* Make some more room in the buffer. */ | |
7453 | *sizeof_buf += repeat; | |
7454 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7455 | buf = *buf_p; | |
7456 | } | |
7457 | ||
c2d11a7d JM |
7458 | memset (&buf[bc], buf[bc - 1], repeat); |
7459 | bc += repeat; | |
c2c6d25f JM |
7460 | continue; |
7461 | } | |
7462 | ||
c2d11a7d | 7463 | buf[bc] = '\0'; |
6d820c5c | 7464 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7465 | return -1; |
c2c6d25f | 7466 | } |
c906108c | 7467 | default: |
6d820c5c | 7468 | if (bc >= *sizeof_buf - 1) |
c906108c | 7469 | { |
6d820c5c DJ |
7470 | /* Make some more room in the buffer. */ |
7471 | *sizeof_buf *= 2; | |
7472 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7473 | buf = *buf_p; | |
c906108c SS |
7474 | } |
7475 | ||
6d820c5c DJ |
7476 | buf[bc++] = c; |
7477 | csum += c; | |
7478 | continue; | |
c906108c SS |
7479 | } |
7480 | } | |
7481 | } | |
7482 | ||
7483 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7484 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7485 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7486 | rather than timing out; this is used (in synchronous mode) to wait | |
7487 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7488 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7489 | don't have to change all the calls to getpkt to deal with the | |
7490 | return value, because at the moment I don't know what the right | |
23860348 | 7491 | thing to do it for those. */ |
c906108c | 7492 | void |
6d820c5c DJ |
7493 | getpkt (char **buf, |
7494 | long *sizeof_buf, | |
c2d11a7d | 7495 | int forever) |
d9fcf2fb JM |
7496 | { |
7497 | int timed_out; | |
7498 | ||
7499 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7500 | } | |
7501 | ||
7502 | ||
7503 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7504 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7505 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7506 | rather than timing out; this is used (in synchronous mode) to wait | |
7507 | for a target that is is executing user code to stop. If FOREVER == | |
7508 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7509 | indication of this to the caller. Otherwise return the number of |
7510 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
fee9eda9 YQ |
7511 | enough reason to return to the caller. *IS_NOTIF is an output |
7512 | boolean that indicates whether *BUF holds a notification or not | |
7513 | (a regular packet). */ | |
74531fed | 7514 | |
3172dc30 | 7515 | static int |
74531fed | 7516 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
fee9eda9 | 7517 | int expecting_notif, int *is_notif) |
c906108c | 7518 | { |
2d717e4f | 7519 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7520 | int c; |
7521 | int tries; | |
7522 | int timeout; | |
df4b58fe | 7523 | int val = -1; |
c906108c | 7524 | |
2d717e4f DJ |
7525 | /* We're reading a new response. Make sure we don't look at a |
7526 | previously cached response. */ | |
7527 | rs->cached_wait_status = 0; | |
7528 | ||
6d820c5c | 7529 | strcpy (*buf, "timeout"); |
c906108c SS |
7530 | |
7531 | if (forever) | |
74531fed PA |
7532 | timeout = watchdog > 0 ? watchdog : -1; |
7533 | else if (expecting_notif) | |
7534 | timeout = 0; /* There should already be a char in the buffer. If | |
7535 | not, bail out. */ | |
c906108c SS |
7536 | else |
7537 | timeout = remote_timeout; | |
7538 | ||
7539 | #define MAX_TRIES 3 | |
7540 | ||
74531fed PA |
7541 | /* Process any number of notifications, and then return when |
7542 | we get a packet. */ | |
7543 | for (;;) | |
c906108c | 7544 | { |
74531fed PA |
7545 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7546 | times. */ | |
7547 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7548 | { |
74531fed PA |
7549 | /* This can loop forever if the remote side sends us |
7550 | characters continuously, but if it pauses, we'll get | |
7551 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7552 | we'll count that as a retry. | |
7553 | ||
7554 | Note that even when forever is set, we will only wait | |
7555 | forever prior to the start of a packet. After that, we | |
7556 | expect characters to arrive at a brisk pace. They should | |
7557 | show up within remote_timeout intervals. */ | |
7558 | do | |
7559 | c = readchar (timeout); | |
7560 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7561 | |
7562 | if (c == SERIAL_TIMEOUT) | |
7563 | { | |
74531fed PA |
7564 | if (expecting_notif) |
7565 | return -1; /* Don't complain, it's normal to not get | |
7566 | anything in this case. */ | |
7567 | ||
23860348 | 7568 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7569 | { |
2acceee2 | 7570 | QUIT; |
ce5ce7ed | 7571 | pop_target (); |
489eaeba | 7572 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7573 | } |
c906108c | 7574 | if (remote_debug) |
0f71a2f6 | 7575 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7576 | } |
74531fed PA |
7577 | else |
7578 | { | |
7579 | /* We've found the start of a packet or notification. | |
7580 | Now collect the data. */ | |
7581 | val = read_frame (buf, sizeof_buf); | |
7582 | if (val >= 0) | |
7583 | break; | |
7584 | } | |
7585 | ||
7586 | serial_write (remote_desc, "-", 1); | |
c906108c | 7587 | } |
c906108c | 7588 | |
74531fed PA |
7589 | if (tries > MAX_TRIES) |
7590 | { | |
7591 | /* We have tried hard enough, and just can't receive the | |
7592 | packet/notification. Give up. */ | |
7593 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7594 | |
74531fed PA |
7595 | /* Skip the ack char if we're in no-ack mode. */ |
7596 | if (!rs->noack_mode) | |
7597 | serial_write (remote_desc, "+", 1); | |
7598 | return -1; | |
7599 | } | |
c906108c | 7600 | |
74531fed PA |
7601 | /* If we got an ordinary packet, return that to our caller. */ |
7602 | if (c == '$') | |
c906108c SS |
7603 | { |
7604 | if (remote_debug) | |
43e526b9 | 7605 | { |
6e5abd65 PA |
7606 | struct cleanup *old_chain; |
7607 | char *str; | |
7608 | ||
7609 | str = escape_buffer (*buf, val); | |
7610 | old_chain = make_cleanup (xfree, str); | |
7611 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7612 | do_cleanups (old_chain); | |
43e526b9 | 7613 | } |
a6f3e723 SL |
7614 | |
7615 | /* Skip the ack char if we're in no-ack mode. */ | |
7616 | if (!rs->noack_mode) | |
7617 | serial_write (remote_desc, "+", 1); | |
fee9eda9 YQ |
7618 | if (is_notif != NULL) |
7619 | *is_notif = 0; | |
0876f84a | 7620 | return val; |
c906108c SS |
7621 | } |
7622 | ||
74531fed PA |
7623 | /* If we got a notification, handle it, and go back to looking |
7624 | for a packet. */ | |
7625 | else | |
7626 | { | |
7627 | gdb_assert (c == '%'); | |
7628 | ||
7629 | if (remote_debug) | |
7630 | { | |
6e5abd65 PA |
7631 | struct cleanup *old_chain; |
7632 | char *str; | |
7633 | ||
7634 | str = escape_buffer (*buf, val); | |
7635 | old_chain = make_cleanup (xfree, str); | |
7636 | fprintf_unfiltered (gdb_stdlog, | |
7637 | " Notification received: %s\n", | |
7638 | str); | |
7639 | do_cleanups (old_chain); | |
74531fed | 7640 | } |
fee9eda9 YQ |
7641 | if (is_notif != NULL) |
7642 | *is_notif = 1; | |
c906108c | 7643 | |
8128fd8e | 7644 | handle_notification (*buf); |
c906108c | 7645 | |
74531fed | 7646 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7647 | |
74531fed | 7648 | if (expecting_notif) |
fee9eda9 | 7649 | return val; |
74531fed PA |
7650 | } |
7651 | } | |
7652 | } | |
7653 | ||
7654 | static int | |
7655 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7656 | { | |
fee9eda9 | 7657 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
74531fed PA |
7658 | } |
7659 | ||
7660 | static int | |
fee9eda9 YQ |
7661 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
7662 | int *is_notif) | |
74531fed | 7663 | { |
fee9eda9 YQ |
7664 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
7665 | is_notif); | |
c906108c | 7666 | } |
74531fed | 7667 | |
c906108c | 7668 | \f |
732f3f12 TT |
7669 | /* A helper function that just calls putpkt; for type correctness. */ |
7670 | ||
7671 | static int | |
7672 | putpkt_for_catch_errors (void *arg) | |
7673 | { | |
7674 | return putpkt (arg); | |
7675 | } | |
7676 | ||
c906108c | 7677 | static void |
7d85a9c0 | 7678 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7679 | { |
23860348 MS |
7680 | /* Use catch_errors so the user can quit from gdb even when we |
7681 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7682 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7683 | |
7684 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7685 | we do or not. For the existing stubs, kill is a noop. */ | |
7686 | target_mourn_inferior (); | |
7687 | } | |
7688 | ||
82f73884 PA |
7689 | static int |
7690 | remote_vkill (int pid, struct remote_state *rs) | |
7691 | { | |
7692 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7693 | return -1; | |
7694 | ||
7695 | /* Tell the remote target to detach. */ | |
bba74b36 | 7696 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7697 | putpkt (rs->buf); |
7698 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7699 | ||
7700 | if (packet_ok (rs->buf, | |
7701 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7702 | return 0; | |
7703 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7704 | return -1; | |
7705 | else | |
7706 | return 1; | |
7707 | } | |
7708 | ||
7709 | static void | |
7d85a9c0 | 7710 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7711 | { |
7712 | int res; | |
7713 | int pid = ptid_get_pid (inferior_ptid); | |
7714 | struct remote_state *rs = get_remote_state (); | |
7715 | ||
7716 | res = remote_vkill (pid, rs); | |
901f9912 | 7717 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7718 | { |
7719 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7720 | to specify the pid. */ | |
7721 | ||
7722 | putpkt ("k"); | |
7723 | #if 0 | |
7724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7725 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7726 | res = 1; | |
7727 | #else | |
7728 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7729 | we do or not. For the existing stubs, kill is a noop. */ | |
7730 | res = 0; | |
7731 | #endif | |
7732 | } | |
7733 | ||
7734 | if (res != 0) | |
7735 | error (_("Can't kill process")); | |
7736 | ||
82f73884 PA |
7737 | target_mourn_inferior (); |
7738 | } | |
7739 | ||
c906108c | 7740 | static void |
136d6dae | 7741 | remote_mourn (struct target_ops *ops) |
c906108c | 7742 | { |
136d6dae | 7743 | remote_mourn_1 (ops); |
c906108c SS |
7744 | } |
7745 | ||
c906108c SS |
7746 | /* Worker function for remote_mourn. */ |
7747 | static void | |
fba45db2 | 7748 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7749 | { |
7750 | unpush_target (target); | |
ce5ce7ed | 7751 | |
8a2492ee PA |
7752 | /* remote_close takes care of doing most of the clean up. */ |
7753 | generic_mourn_inferior (); | |
c906108c SS |
7754 | } |
7755 | ||
2d717e4f DJ |
7756 | static void |
7757 | extended_remote_mourn_1 (struct target_ops *target) | |
7758 | { | |
7759 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7760 | |
e24a49d8 PA |
7761 | /* In case we got here due to an error, but we're going to stay |
7762 | connected. */ | |
7763 | rs->waiting_for_stop_reply = 0; | |
7764 | ||
dc1981d7 PA |
7765 | /* If the current general thread belonged to the process we just |
7766 | detached from or has exited, the remote side current general | |
7767 | thread becomes undefined. Considering a case like this: | |
7768 | ||
7769 | - We just got here due to a detach. | |
7770 | - The process that we're detaching from happens to immediately | |
7771 | report a global breakpoint being hit in non-stop mode, in the | |
7772 | same thread we had selected before. | |
7773 | - GDB attaches to this process again. | |
7774 | - This event happens to be the next event we handle. | |
7775 | ||
7776 | GDB would consider that the current general thread didn't need to | |
7777 | be set on the stub side (with Hg), since for all it knew, | |
7778 | GENERAL_THREAD hadn't changed. | |
7779 | ||
7780 | Notice that although in all-stop mode, the remote server always | |
7781 | sets the current thread to the thread reporting the stop event, | |
7782 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7783 | not* change the current thread when reporting a breakpoint hit, | |
7784 | due to the decoupling of event reporting and event handling. | |
7785 | ||
7786 | To keep things simple, we always invalidate our notion of the | |
7787 | current thread. */ | |
7788 | record_currthread (minus_one_ptid); | |
7789 | ||
2d717e4f DJ |
7790 | /* Unlike "target remote", we do not want to unpush the target; then |
7791 | the next time the user says "run", we won't be connected. */ | |
7792 | ||
48aa3c27 PA |
7793 | /* Call common code to mark the inferior as not running. */ |
7794 | generic_mourn_inferior (); | |
7795 | ||
d729566a | 7796 | if (!have_inferiors ()) |
2d717e4f | 7797 | { |
82f73884 PA |
7798 | if (!remote_multi_process_p (rs)) |
7799 | { | |
7800 | /* Check whether the target is running now - some remote stubs | |
7801 | automatically restart after kill. */ | |
7802 | putpkt ("?"); | |
7803 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7804 | ||
7805 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7806 | { | |
3e43a32a MS |
7807 | /* Assume that the target has been restarted. Set |
7808 | inferior_ptid so that bits of core GDB realizes | |
7809 | there's something here, e.g., so that the user can | |
7810 | say "kill" again. */ | |
82f73884 PA |
7811 | inferior_ptid = magic_null_ptid; |
7812 | } | |
82f73884 | 7813 | } |
2d717e4f DJ |
7814 | } |
7815 | } | |
c906108c SS |
7816 | |
7817 | static void | |
136d6dae | 7818 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7819 | { |
136d6dae | 7820 | extended_remote_mourn_1 (ops); |
2d717e4f | 7821 | } |
c906108c | 7822 | |
03583c20 UW |
7823 | static int |
7824 | extended_remote_supports_disable_randomization (void) | |
7825 | { | |
7826 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7827 | == PACKET_ENABLE); | |
7828 | } | |
7829 | ||
7830 | static void | |
7831 | extended_remote_disable_randomization (int val) | |
7832 | { | |
7833 | struct remote_state *rs = get_remote_state (); | |
7834 | char *reply; | |
7835 | ||
bba74b36 YQ |
7836 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7837 | val); | |
03583c20 UW |
7838 | putpkt (rs->buf); |
7839 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7840 | if (*reply == '\0') | |
7841 | error (_("Target does not support QDisableRandomization.")); | |
7842 | if (strcmp (reply, "OK") != 0) | |
7843 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7844 | } | |
7845 | ||
2d717e4f DJ |
7846 | static int |
7847 | extended_remote_run (char *args) | |
7848 | { | |
7849 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7850 | int len; |
c906108c | 7851 | |
2d717e4f DJ |
7852 | /* If the user has disabled vRun support, or we have detected that |
7853 | support is not available, do not try it. */ | |
7854 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7855 | return -1; | |
424163ea | 7856 | |
2d717e4f DJ |
7857 | strcpy (rs->buf, "vRun;"); |
7858 | len = strlen (rs->buf); | |
c906108c | 7859 | |
2d717e4f DJ |
7860 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7861 | error (_("Remote file name too long for run packet")); | |
7862 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7863 | ||
d1a41061 | 7864 | gdb_assert (args != NULL); |
2d717e4f DJ |
7865 | if (*args) |
7866 | { | |
7867 | struct cleanup *back_to; | |
7868 | int i; | |
7869 | char **argv; | |
7870 | ||
d1a41061 | 7871 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7872 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7873 | for (i = 0; argv[i] != NULL; i++) | |
7874 | { | |
7875 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7876 | error (_("Argument list too long for run packet")); | |
7877 | rs->buf[len++] = ';'; | |
7878 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7879 | } | |
7880 | do_cleanups (back_to); | |
7881 | } | |
7882 | ||
7883 | rs->buf[len++] = '\0'; | |
7884 | ||
7885 | putpkt (rs->buf); | |
7886 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7887 | ||
7888 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7889 | { | |
3405876a | 7890 | /* We have a wait response. All is well. */ |
2d717e4f DJ |
7891 | return 0; |
7892 | } | |
7893 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7894 | /* It wasn't disabled before, but it is now. */ | |
7895 | return -1; | |
7896 | else | |
7897 | { | |
7898 | if (remote_exec_file[0] == '\0') | |
7899 | error (_("Running the default executable on the remote target failed; " | |
7900 | "try \"set remote exec-file\"?")); | |
7901 | else | |
7902 | error (_("Running \"%s\" on the remote target failed"), | |
7903 | remote_exec_file); | |
7904 | } | |
c906108c SS |
7905 | } |
7906 | ||
2d717e4f DJ |
7907 | /* In the extended protocol we want to be able to do things like |
7908 | "run" and have them basically work as expected. So we need | |
7909 | a special create_inferior function. We support changing the | |
7910 | executable file and the command line arguments, but not the | |
7911 | environment. */ | |
7912 | ||
43ff13b4 | 7913 | static void |
2d717e4f | 7914 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7915 | char **env, int from_tty) |
43ff13b4 | 7916 | { |
3405876a PA |
7917 | int run_worked; |
7918 | char *stop_reply; | |
7919 | struct remote_state *rs = get_remote_state (); | |
7920 | ||
43ff13b4 | 7921 | /* If running asynchronously, register the target file descriptor |
23860348 | 7922 | with the event loop. */ |
75c99385 | 7923 | if (target_can_async_p ()) |
2acceee2 | 7924 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7925 | |
03583c20 UW |
7926 | /* Disable address space randomization if requested (and supported). */ |
7927 | if (extended_remote_supports_disable_randomization ()) | |
7928 | extended_remote_disable_randomization (disable_randomization); | |
7929 | ||
43ff13b4 | 7930 | /* Now restart the remote server. */ |
3405876a PA |
7931 | run_worked = extended_remote_run (args) != -1; |
7932 | if (!run_worked) | |
2d717e4f DJ |
7933 | { |
7934 | /* vRun was not supported. Fail if we need it to do what the | |
7935 | user requested. */ | |
7936 | if (remote_exec_file[0]) | |
7937 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7938 | if (args[0]) | |
7939 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7940 | |
2d717e4f DJ |
7941 | /* Fall back to "R". */ |
7942 | extended_remote_restart (); | |
7943 | } | |
424163ea | 7944 | |
6c95b8df PA |
7945 | if (!have_inferiors ()) |
7946 | { | |
7947 | /* Clean up from the last time we ran, before we mark the target | |
7948 | running again. This will mark breakpoints uninserted, and | |
7949 | get_offsets may insert breakpoints. */ | |
7950 | init_thread_list (); | |
7951 | init_wait_for_inferior (); | |
7952 | } | |
45280a52 | 7953 | |
3405876a PA |
7954 | /* vRun's success return is a stop reply. */ |
7955 | stop_reply = run_worked ? rs->buf : NULL; | |
7956 | add_current_inferior_and_thread (stop_reply); | |
c0a2216e | 7957 | |
2d717e4f DJ |
7958 | /* Get updated offsets, if the stub uses qOffsets. */ |
7959 | get_offsets (); | |
2d717e4f DJ |
7960 | } |
7961 | ||
7962 | static void | |
136d6dae VP |
7963 | extended_remote_create_inferior (struct target_ops *ops, |
7964 | char *exec_file, char *args, | |
2d717e4f DJ |
7965 | char **env, int from_tty) |
7966 | { | |
75c99385 | 7967 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7968 | } |
c906108c | 7969 | \f |
c5aa993b | 7970 | |
b775012e LM |
7971 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7972 | the list of conditions (in agent expression bytecode format), if any, the | |
7973 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 7974 | started from BUF and ended at BUF_END. */ |
b775012e LM |
7975 | |
7976 | static int | |
7977 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
7978 | struct bp_target_info *bp_tgt, char *buf, |
7979 | char *buf_end) | |
b775012e LM |
7980 | { |
7981 | struct agent_expr *aexpr = NULL; | |
7982 | int i, ix; | |
7983 | char *pkt; | |
7984 | char *buf_start = buf; | |
7985 | ||
7986 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7987 | return 0; | |
7988 | ||
7989 | buf += strlen (buf); | |
bba74b36 | 7990 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
7991 | buf++; |
7992 | ||
7993 | /* Send conditions to the target and free the vector. */ | |
7994 | for (ix = 0; | |
7995 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
7996 | ix++) | |
7997 | { | |
bba74b36 | 7998 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
7999 | buf += strlen (buf); |
8000 | for (i = 0; i < aexpr->len; ++i) | |
8001 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8002 | *buf = '\0'; | |
8003 | } | |
8004 | ||
8005 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
8006 | return 0; | |
8007 | } | |
8008 | ||
d3ce09f5 SS |
8009 | static void |
8010 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8011 | struct bp_target_info *bp_tgt, char *buf) | |
8012 | { | |
8013 | struct agent_expr *aexpr = NULL; | |
8014 | int i, ix; | |
8015 | ||
8016 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8017 | return; | |
8018 | ||
8019 | buf += strlen (buf); | |
8020 | ||
8021 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8022 | buf += strlen (buf); | |
8023 | ||
8024 | /* Concatenate all the agent expressions that are commands into the | |
8025 | cmds parameter. */ | |
8026 | for (ix = 0; | |
8027 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8028 | ix++) | |
8029 | { | |
8030 | sprintf (buf, "X%x,", aexpr->len); | |
8031 | buf += strlen (buf); | |
8032 | for (i = 0; i < aexpr->len; ++i) | |
8033 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8034 | *buf = '\0'; | |
8035 | } | |
8036 | ||
8037 | VEC_free (agent_expr_p, bp_tgt->tcommands); | |
8038 | } | |
8039 | ||
8181d85f DJ |
8040 | /* Insert a breakpoint. On targets that have software breakpoint |
8041 | support, we ask the remote target to do the work; on targets | |
8042 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
8043 | |
8044 | static int | |
a6d9a66e UW |
8045 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
8046 | struct bp_target_info *bp_tgt) | |
c906108c | 8047 | { |
d471ea57 AC |
8048 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
8049 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8050 | fails, and the user has explicitly requested the Z support then | |
23860348 | 8051 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 8052 | |
444abaca | 8053 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8054 | { |
7c0f6dcc | 8055 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 8056 | struct remote_state *rs; |
bba74b36 | 8057 | char *p, *endbuf; |
7c0f6dcc | 8058 | int bpsize; |
b775012e | 8059 | struct condition_list *cond = NULL; |
4fff2411 | 8060 | |
a1dcb23a | 8061 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
8062 | |
8063 | rs = get_remote_state (); | |
8064 | p = rs->buf; | |
bba74b36 | 8065 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8066 | |
96baa820 JM |
8067 | *(p++) = 'Z'; |
8068 | *(p++) = '0'; | |
8069 | *(p++) = ','; | |
7c0f6dcc | 8070 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 8071 | p += hexnumstr (p, addr); |
bba74b36 | 8072 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 8073 | |
b775012e | 8074 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8075 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8076 | |
d3ce09f5 SS |
8077 | if (remote_can_run_breakpoint_commands ()) |
8078 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8079 | ||
6d820c5c DJ |
8080 | putpkt (rs->buf); |
8081 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8082 | |
6d820c5c | 8083 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 8084 | { |
d471ea57 AC |
8085 | case PACKET_ERROR: |
8086 | return -1; | |
8087 | case PACKET_OK: | |
7c0f6dcc JL |
8088 | bp_tgt->placed_address = addr; |
8089 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
8090 | return 0; |
8091 | case PACKET_UNKNOWN: | |
8092 | break; | |
96baa820 JM |
8093 | } |
8094 | } | |
c906108c | 8095 | |
a6d9a66e | 8096 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8097 | } |
8098 | ||
8099 | static int | |
a6d9a66e UW |
8100 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
8101 | struct bp_target_info *bp_tgt) | |
c906108c | 8102 | { |
8181d85f | 8103 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 8104 | struct remote_state *rs = get_remote_state (); |
96baa820 | 8105 | |
444abaca | 8106 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 8107 | { |
6d820c5c | 8108 | char *p = rs->buf; |
bba74b36 | 8109 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 8110 | |
96baa820 JM |
8111 | *(p++) = 'z'; |
8112 | *(p++) = '0'; | |
8113 | *(p++) = ','; | |
8114 | ||
8181d85f DJ |
8115 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8116 | p += hexnumstr (p, addr); | |
bba74b36 | 8117 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8118 | |
6d820c5c DJ |
8119 | putpkt (rs->buf); |
8120 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8121 | |
6d820c5c | 8122 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8123 | } |
8124 | ||
a6d9a66e | 8125 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8126 | } |
8127 | ||
d471ea57 AC |
8128 | static int |
8129 | watchpoint_to_Z_packet (int type) | |
8130 | { | |
8131 | switch (type) | |
8132 | { | |
8133 | case hw_write: | |
bb858e6a | 8134 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8135 | break; |
8136 | case hw_read: | |
bb858e6a | 8137 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8138 | break; |
8139 | case hw_access: | |
bb858e6a | 8140 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8141 | break; |
8142 | default: | |
8e65ff28 | 8143 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8144 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8145 | } |
8146 | } | |
8147 | ||
3c3bea1c | 8148 | static int |
0cf6dd15 TJB |
8149 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
8150 | struct expression *cond) | |
96baa820 | 8151 | { |
d01949b6 | 8152 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8153 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8154 | char *p; |
d471ea57 | 8155 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8156 | |
444abaca | 8157 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8158 | return 1; |
802188a7 | 8159 | |
bba74b36 | 8160 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8161 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8162 | addr = remote_address_masked (addr); |
8163 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8164 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8165 | |
6d820c5c DJ |
8166 | putpkt (rs->buf); |
8167 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8168 | |
6d820c5c | 8169 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8170 | { |
8171 | case PACKET_ERROR: | |
d471ea57 | 8172 | return -1; |
85d721b8 PA |
8173 | case PACKET_UNKNOWN: |
8174 | return 1; | |
d471ea57 AC |
8175 | case PACKET_OK: |
8176 | return 0; | |
8177 | } | |
8e65ff28 | 8178 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8179 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8180 | } |
8181 | ||
283002cf MR |
8182 | static int |
8183 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8184 | CORE_ADDR start, int length) | |
8185 | { | |
8186 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8187 | ||
8188 | return diff < length; | |
8189 | } | |
8190 | ||
d471ea57 | 8191 | |
3c3bea1c | 8192 | static int |
0cf6dd15 TJB |
8193 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8194 | struct expression *cond) | |
96baa820 | 8195 | { |
d01949b6 | 8196 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8197 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8198 | char *p; |
d471ea57 AC |
8199 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8200 | ||
444abaca | 8201 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8202 | return -1; |
802188a7 | 8203 | |
bba74b36 | 8204 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8205 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8206 | addr = remote_address_masked (addr); |
8207 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8208 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8209 | putpkt (rs->buf); |
8210 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8211 | |
6d820c5c | 8212 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8213 | { |
8214 | case PACKET_ERROR: | |
8215 | case PACKET_UNKNOWN: | |
8216 | return -1; | |
8217 | case PACKET_OK: | |
8218 | return 0; | |
8219 | } | |
8e65ff28 | 8220 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8221 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8222 | } |
8223 | ||
3c3bea1c | 8224 | |
501eef12 | 8225 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8226 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8227 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8228 | |
480a3f21 PW |
8229 | static int |
8230 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8231 | { | |
8232 | if (remote_hw_watchpoint_length_limit == 0) | |
8233 | return 0; | |
8234 | else if (remote_hw_watchpoint_length_limit < 0) | |
8235 | return 1; | |
8236 | else if (len <= remote_hw_watchpoint_length_limit) | |
8237 | return 1; | |
8238 | else | |
8239 | return 0; | |
8240 | } | |
8241 | ||
b9362cc7 | 8242 | static int |
3c3bea1c | 8243 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8244 | { |
3c3bea1c GS |
8245 | if (type == bp_hardware_breakpoint) |
8246 | { | |
8247 | if (remote_hw_breakpoint_limit == 0) | |
8248 | return 0; | |
501eef12 AC |
8249 | else if (remote_hw_breakpoint_limit < 0) |
8250 | return 1; | |
3c3bea1c GS |
8251 | else if (cnt <= remote_hw_breakpoint_limit) |
8252 | return 1; | |
8253 | } | |
8254 | else | |
8255 | { | |
8256 | if (remote_hw_watchpoint_limit == 0) | |
8257 | return 0; | |
501eef12 AC |
8258 | else if (remote_hw_watchpoint_limit < 0) |
8259 | return 1; | |
3c3bea1c GS |
8260 | else if (ot) |
8261 | return -1; | |
8262 | else if (cnt <= remote_hw_watchpoint_limit) | |
8263 | return 1; | |
8264 | } | |
8265 | return -1; | |
8266 | } | |
8267 | ||
b9362cc7 | 8268 | static int |
3c3bea1c GS |
8269 | remote_stopped_by_watchpoint (void) |
8270 | { | |
82f73884 | 8271 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
8272 | } |
8273 | ||
4aa7a7f5 JJ |
8274 | static int |
8275 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8276 | { |
4aa7a7f5 | 8277 | int rc = 0; |
a744cf53 | 8278 | |
d983da9c | 8279 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
8280 | { |
8281 | *addr_p = remote_watch_data_address; | |
8282 | rc = 1; | |
8283 | } | |
8284 | ||
8285 | return rc; | |
3c3bea1c GS |
8286 | } |
8287 | ||
8288 | ||
8289 | static int | |
a6d9a66e UW |
8290 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8291 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8292 | { |
8181d85f | 8293 | CORE_ADDR addr; |
4fff2411 | 8294 | struct remote_state *rs; |
bba74b36 | 8295 | char *p, *endbuf; |
dd61ec5c | 8296 | char *message; |
802188a7 | 8297 | |
c8189ed1 | 8298 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8299 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8300 | |
a1dcb23a | 8301 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8302 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8303 | |
444abaca | 8304 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8305 | return -1; |
2bc416ba | 8306 | |
4fff2411 JZ |
8307 | rs = get_remote_state (); |
8308 | p = rs->buf; | |
bba74b36 | 8309 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8310 | |
96baa820 JM |
8311 | *(p++) = 'Z'; |
8312 | *(p++) = '1'; | |
8313 | *(p++) = ','; | |
802188a7 | 8314 | |
8181d85f | 8315 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8316 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8317 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8318 | |
b775012e | 8319 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8320 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8321 | |
d3ce09f5 SS |
8322 | if (remote_can_run_breakpoint_commands ()) |
8323 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8324 | ||
6d820c5c DJ |
8325 | putpkt (rs->buf); |
8326 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8327 | |
6d820c5c | 8328 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8329 | { |
8330 | case PACKET_ERROR: | |
dd61ec5c MW |
8331 | if (rs->buf[1] == '.') |
8332 | { | |
8333 | message = strchr (rs->buf + 2, '.'); | |
8334 | if (message) | |
0316657e | 8335 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
8336 | } |
8337 | return -1; | |
d471ea57 AC |
8338 | case PACKET_UNKNOWN: |
8339 | return -1; | |
8340 | case PACKET_OK: | |
8341 | return 0; | |
8342 | } | |
8e65ff28 | 8343 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8344 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8345 | } |
8346 | ||
d471ea57 | 8347 | |
802188a7 | 8348 | static int |
a6d9a66e UW |
8349 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8350 | struct bp_target_info *bp_tgt) | |
96baa820 | 8351 | { |
8181d85f | 8352 | CORE_ADDR addr; |
d01949b6 | 8353 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8354 | char *p = rs->buf; |
bba74b36 | 8355 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8356 | |
444abaca | 8357 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8358 | return -1; |
802188a7 | 8359 | |
96baa820 JM |
8360 | *(p++) = 'z'; |
8361 | *(p++) = '1'; | |
8362 | *(p++) = ','; | |
802188a7 | 8363 | |
8181d85f | 8364 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8365 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8366 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8367 | |
6d820c5c DJ |
8368 | putpkt (rs->buf); |
8369 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8370 | |
6d820c5c | 8371 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8372 | { |
8373 | case PACKET_ERROR: | |
8374 | case PACKET_UNKNOWN: | |
8375 | return -1; | |
8376 | case PACKET_OK: | |
8377 | return 0; | |
8378 | } | |
8e65ff28 | 8379 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8380 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8381 | } |
96baa820 | 8382 | |
23860348 | 8383 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8384 | |
c5aa993b JM |
8385 | static unsigned long crc32_table[256] = |
8386 | {0, 0}; | |
c906108c SS |
8387 | |
8388 | static unsigned long | |
4a5e7a5b | 8389 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8390 | { |
c5aa993b | 8391 | if (!crc32_table[1]) |
c906108c | 8392 | { |
23860348 | 8393 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8394 | int i, j; |
8395 | unsigned int c; | |
8396 | ||
8397 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8398 | { |
8399 | for (c = i << 24, j = 8; j > 0; --j) | |
8400 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8401 | crc32_table[i] = c; | |
8402 | } | |
c906108c SS |
8403 | } |
8404 | ||
8405 | while (len--) | |
8406 | { | |
8407 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8408 | buf++; | |
8409 | } | |
8410 | return crc; | |
8411 | } | |
8412 | ||
4a5e7a5b PA |
8413 | /* Verify memory using the "qCRC:" request. */ |
8414 | ||
8415 | static int | |
8416 | remote_verify_memory (struct target_ops *ops, | |
8417 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8418 | { | |
8419 | struct remote_state *rs = get_remote_state (); | |
8420 | unsigned long host_crc, target_crc; | |
8421 | char *tmp; | |
8422 | ||
8423 | /* FIXME: assumes lma can fit into long. */ | |
8424 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8425 | (long) lma, (long) size); | |
8426 | putpkt (rs->buf); | |
8427 | ||
8428 | /* Be clever; compute the host_crc before waiting for target | |
8429 | reply. */ | |
8430 | host_crc = crc32 (data, size, 0xffffffff); | |
8431 | ||
8432 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8433 | if (rs->buf[0] == 'E') | |
8434 | return -1; | |
8435 | ||
8436 | if (rs->buf[0] != 'C') | |
8437 | error (_("remote target does not support this operation")); | |
8438 | ||
8439 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8440 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8441 | ||
8442 | return (host_crc == target_crc); | |
8443 | } | |
8444 | ||
c906108c SS |
8445 | /* compare-sections command |
8446 | ||
8447 | With no arguments, compares each loadable section in the exec bfd | |
8448 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8449 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8450 | |
c906108c | 8451 | static void |
fba45db2 | 8452 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8453 | { |
8454 | asection *s; | |
c906108c | 8455 | struct cleanup *old_chain; |
085dd6e6 | 8456 | char *sectdata; |
ce359b09 | 8457 | const char *sectname; |
c906108c SS |
8458 | bfd_size_type size; |
8459 | bfd_vma lma; | |
8460 | int matched = 0; | |
8461 | int mismatched = 0; | |
4a5e7a5b | 8462 | int res; |
c906108c SS |
8463 | |
8464 | if (!exec_bfd) | |
8a3fe4f8 | 8465 | error (_("command cannot be used without an exec file")); |
c906108c | 8466 | |
c5aa993b | 8467 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8468 | { |
8469 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8470 | continue; /* Skip non-loadable section. */ |
c906108c | 8471 | |
2c500098 | 8472 | size = bfd_get_section_size (s); |
c906108c | 8473 | if (size == 0) |
0df8b418 | 8474 | continue; /* Skip zero-length section. */ |
c906108c | 8475 | |
ce359b09 | 8476 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8477 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8478 | continue; /* Not the section selected by user. */ |
c906108c | 8479 | |
0df8b418 | 8480 | matched = 1; /* Do this section. */ |
c906108c | 8481 | lma = s->lma; |
c906108c | 8482 | |
c906108c | 8483 | sectdata = xmalloc (size); |
b8c9b27d | 8484 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8485 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8486 | |
4a5e7a5b PA |
8487 | res = target_verify_memory (sectdata, lma, size); |
8488 | ||
8489 | if (res == -1) | |
5af949e3 | 8490 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
8491 | paddress (target_gdbarch (), lma), |
8492 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 8493 | |
5af949e3 | 8494 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
8495 | paddress (target_gdbarch (), lma), |
8496 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 8497 | if (res) |
c906108c SS |
8498 | printf_filtered ("matched.\n"); |
8499 | else | |
c5aa993b JM |
8500 | { |
8501 | printf_filtered ("MIS-MATCHED!\n"); | |
8502 | mismatched++; | |
8503 | } | |
c906108c SS |
8504 | |
8505 | do_cleanups (old_chain); | |
8506 | } | |
8507 | if (mismatched > 0) | |
8a3fe4f8 AC |
8508 | warning (_("One or more sections of the remote executable does not match\n\ |
8509 | the loaded file\n")); | |
c906108c | 8510 | if (args && !matched) |
a3f17187 | 8511 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8512 | } |
8513 | ||
0e7f50da UW |
8514 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8515 | into remote target. The number of bytes written to the remote | |
8516 | target is returned, or -1 for error. */ | |
8517 | ||
8518 | static LONGEST | |
8519 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8520 | const char *annex, const gdb_byte *writebuf, | |
8521 | ULONGEST offset, LONGEST len, | |
8522 | struct packet_config *packet) | |
8523 | { | |
8524 | int i, buf_len; | |
8525 | ULONGEST n; | |
0e7f50da UW |
8526 | struct remote_state *rs = get_remote_state (); |
8527 | int max_size = get_memory_write_packet_size (); | |
8528 | ||
8529 | if (packet->support == PACKET_DISABLE) | |
8530 | return -1; | |
8531 | ||
8532 | /* Insert header. */ | |
8533 | i = snprintf (rs->buf, max_size, | |
8534 | "qXfer:%s:write:%s:%s:", | |
8535 | object_name, annex ? annex : "", | |
8536 | phex_nz (offset, sizeof offset)); | |
8537 | max_size -= (i + 1); | |
8538 | ||
8539 | /* Escape as much data as fits into rs->buf. */ | |
8540 | buf_len = remote_escape_output | |
8541 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8542 | ||
8543 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8544 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8545 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8546 | return -1; | |
8547 | ||
8548 | unpack_varlen_hex (rs->buf, &n); | |
8549 | return n; | |
8550 | } | |
8551 | ||
0876f84a DJ |
8552 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8553 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8554 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8555 | The number of bytes read may be less than LEN without indicating an | |
8556 | EOF. PACKET is checked and updated to indicate whether the remote | |
8557 | target supports this object. */ | |
8558 | ||
8559 | static LONGEST | |
8560 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8561 | const char *annex, | |
8562 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8563 | struct packet_config *packet) | |
8564 | { | |
8565 | static char *finished_object; | |
8566 | static char *finished_annex; | |
8567 | static ULONGEST finished_offset; | |
8568 | ||
8569 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8570 | LONGEST i, n, packet_len; |
8571 | ||
8572 | if (packet->support == PACKET_DISABLE) | |
8573 | return -1; | |
8574 | ||
8575 | /* Check whether we've cached an end-of-object packet that matches | |
8576 | this request. */ | |
8577 | if (finished_object) | |
8578 | { | |
8579 | if (strcmp (object_name, finished_object) == 0 | |
8580 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8581 | && offset == finished_offset) | |
8582 | return 0; | |
8583 | ||
8584 | /* Otherwise, we're now reading something different. Discard | |
8585 | the cache. */ | |
8586 | xfree (finished_object); | |
8587 | xfree (finished_annex); | |
8588 | finished_object = NULL; | |
8589 | finished_annex = NULL; | |
8590 | } | |
8591 | ||
8592 | /* Request only enough to fit in a single packet. The actual data | |
8593 | may not, since we don't know how much of it will need to be escaped; | |
8594 | the target is free to respond with slightly less data. We subtract | |
8595 | five to account for the response type and the protocol frame. */ | |
8596 | n = min (get_remote_packet_size () - 5, len); | |
8597 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8598 | object_name, annex ? annex : "", | |
8599 | phex_nz (offset, sizeof offset), | |
8600 | phex_nz (n, sizeof n)); | |
8601 | i = putpkt (rs->buf); | |
8602 | if (i < 0) | |
8603 | return -1; | |
8604 | ||
8605 | rs->buf[0] = '\0'; | |
8606 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8607 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8608 | return -1; | |
8609 | ||
8610 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8611 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8612 | ||
8613 | /* 'm' means there is (or at least might be) more data after this | |
8614 | batch. That does not make sense unless there's at least one byte | |
8615 | of data in this reply. */ | |
8616 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8617 | error (_("Remote qXfer reply contained no data.")); | |
8618 | ||
8619 | /* Got some data. */ | |
8620 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8621 | ||
8622 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8623 | or possibly empty. If we have the final block of a non-empty |
8624 | object, record this fact to bypass a subsequent partial read. */ | |
8625 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8626 | { |
8627 | finished_object = xstrdup (object_name); | |
8628 | finished_annex = xstrdup (annex ? annex : ""); | |
8629 | finished_offset = offset + i; | |
8630 | } | |
8631 | ||
8632 | return i; | |
8633 | } | |
8634 | ||
1e3ff5ad | 8635 | static LONGEST |
4b8a223f | 8636 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8637 | const char *annex, gdb_byte *readbuf, |
8638 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8639 | { |
82f73884 | 8640 | struct remote_state *rs; |
c906108c | 8641 | int i; |
6d820c5c | 8642 | char *p2; |
1e3ff5ad | 8643 | char query_type; |
c906108c | 8644 | |
e6e4e701 | 8645 | set_remote_traceframe (); |
82f73884 PA |
8646 | set_general_thread (inferior_ptid); |
8647 | ||
8648 | rs = get_remote_state (); | |
8649 | ||
b2182ed2 | 8650 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8651 | if (object == TARGET_OBJECT_MEMORY) |
8652 | { | |
8653 | int xfered; | |
a744cf53 | 8654 | |
21e3b9b9 DJ |
8655 | errno = 0; |
8656 | ||
2d717e4f DJ |
8657 | /* If the remote target is connected but not running, we should |
8658 | pass this request down to a lower stratum (e.g. the executable | |
8659 | file). */ | |
8660 | if (!target_has_execution) | |
8661 | return 0; | |
8662 | ||
21e3b9b9 | 8663 | if (writebuf != NULL) |
b2182ed2 | 8664 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8665 | else |
b2182ed2 | 8666 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8667 | |
8668 | if (xfered > 0) | |
8669 | return xfered; | |
8670 | else if (xfered == 0 && errno == 0) | |
8671 | return 0; | |
8672 | else | |
8673 | return -1; | |
8674 | } | |
8675 | ||
0df8b418 | 8676 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8677 | if (object == TARGET_OBJECT_SPU) |
8678 | { | |
8679 | if (readbuf) | |
8680 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8681 | &remote_protocol_packets | |
8682 | [PACKET_qXfer_spu_read]); | |
8683 | else | |
8684 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8685 | &remote_protocol_packets | |
8686 | [PACKET_qXfer_spu_write]); | |
8687 | } | |
8688 | ||
4aa995e1 PA |
8689 | /* Handle extra signal info using qxfer packets. */ |
8690 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8691 | { | |
8692 | if (readbuf) | |
8693 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8694 | &remote_protocol_packets | |
8695 | [PACKET_qXfer_siginfo_read]); | |
8696 | else | |
3e43a32a MS |
8697 | return remote_write_qxfer (ops, "siginfo", annex, |
8698 | writebuf, offset, len, | |
4aa995e1 PA |
8699 | &remote_protocol_packets |
8700 | [PACKET_qXfer_siginfo_write]); | |
8701 | } | |
8702 | ||
0fb4aa4b PA |
8703 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8704 | { | |
8705 | if (readbuf) | |
3e43a32a MS |
8706 | return remote_read_qxfer (ops, "statictrace", annex, |
8707 | readbuf, offset, len, | |
0fb4aa4b PA |
8708 | &remote_protocol_packets |
8709 | [PACKET_qXfer_statictrace_read]); | |
8710 | else | |
8711 | return -1; | |
8712 | } | |
8713 | ||
a76d924d DJ |
8714 | /* Only handle flash writes. */ |
8715 | if (writebuf != NULL) | |
8716 | { | |
8717 | LONGEST xfered; | |
8718 | ||
8719 | switch (object) | |
8720 | { | |
8721 | case TARGET_OBJECT_FLASH: | |
8722 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8723 | ||
8724 | if (xfered > 0) | |
8725 | return xfered; | |
8726 | else if (xfered == 0 && errno == 0) | |
8727 | return 0; | |
8728 | else | |
8729 | return -1; | |
8730 | ||
8731 | default: | |
8732 | return -1; | |
8733 | } | |
8734 | } | |
4b8a223f | 8735 | |
1e3ff5ad AC |
8736 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8737 | objects!!! Instead specify new query packets. */ | |
8738 | switch (object) | |
c906108c | 8739 | { |
1e3ff5ad AC |
8740 | case TARGET_OBJECT_AVR: |
8741 | query_type = 'R'; | |
8742 | break; | |
802188a7 RM |
8743 | |
8744 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8745 | gdb_assert (annex == NULL); |
8746 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8747 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8748 | |
23181151 DJ |
8749 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8750 | return remote_read_qxfer | |
8751 | (ops, "features", annex, readbuf, offset, len, | |
8752 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8753 | ||
cfa9d6d9 DJ |
8754 | case TARGET_OBJECT_LIBRARIES: |
8755 | return remote_read_qxfer | |
8756 | (ops, "libraries", annex, readbuf, offset, len, | |
8757 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8758 | ||
2268b414 JK |
8759 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8760 | return remote_read_qxfer | |
8761 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8762 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8763 | ||
fd79ecee DJ |
8764 | case TARGET_OBJECT_MEMORY_MAP: |
8765 | gdb_assert (annex == NULL); | |
8766 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8767 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8768 | ||
07e059b5 VP |
8769 | case TARGET_OBJECT_OSDATA: |
8770 | /* Should only get here if we're connected. */ | |
8771 | gdb_assert (remote_desc); | |
8772 | return remote_read_qxfer | |
8773 | (ops, "osdata", annex, readbuf, offset, len, | |
8774 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8775 | ||
dc146f7c VP |
8776 | case TARGET_OBJECT_THREADS: |
8777 | gdb_assert (annex == NULL); | |
8778 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8779 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8780 | ||
b3b9301e PA |
8781 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8782 | gdb_assert (annex == NULL); | |
8783 | return remote_read_qxfer | |
8784 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8785 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8786 | |
8787 | case TARGET_OBJECT_FDPIC: | |
8788 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8789 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8790 | |
8791 | case TARGET_OBJECT_OPENVMS_UIB: | |
8792 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8793 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8794 | ||
1e3ff5ad | 8795 | default: |
c906108c SS |
8796 | return -1; |
8797 | } | |
8798 | ||
4b8a223f | 8799 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8800 | buffer size. */ |
4b8a223f | 8801 | if (offset == 0 && len == 0) |
ea9c271d | 8802 | return (get_remote_packet_size ()); |
0df8b418 | 8803 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8804 | large enough let the caller deal with it. */ |
ea9c271d | 8805 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8806 | return -1; |
ea9c271d | 8807 | len = get_remote_packet_size (); |
1e3ff5ad | 8808 | |
23860348 | 8809 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8810 | if (!remote_desc) |
8a3fe4f8 | 8811 | error (_("remote query is only available after target open")); |
c906108c | 8812 | |
1e3ff5ad | 8813 | gdb_assert (annex != NULL); |
4b8a223f | 8814 | gdb_assert (readbuf != NULL); |
c906108c | 8815 | |
6d820c5c | 8816 | p2 = rs->buf; |
c906108c SS |
8817 | *p2++ = 'q'; |
8818 | *p2++ = query_type; | |
8819 | ||
23860348 MS |
8820 | /* We used one buffer char for the remote protocol q command and |
8821 | another for the query type. As the remote protocol encapsulation | |
8822 | uses 4 chars plus one extra in case we are debugging | |
8823 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8824 | string. */ | |
c906108c | 8825 | i = 0; |
ea9c271d | 8826 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8827 | { |
1e3ff5ad AC |
8828 | /* Bad caller may have sent forbidden characters. */ |
8829 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8830 | *p2++ = annex[i]; | |
c906108c SS |
8831 | i++; |
8832 | } | |
1e3ff5ad AC |
8833 | *p2 = '\0'; |
8834 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8835 | |
6d820c5c | 8836 | i = putpkt (rs->buf); |
c5aa993b JM |
8837 | if (i < 0) |
8838 | return i; | |
c906108c | 8839 | |
6d820c5c DJ |
8840 | getpkt (&rs->buf, &rs->buf_size, 0); |
8841 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8842 | |
cfd77fa1 | 8843 | return strlen ((char *) readbuf); |
c906108c SS |
8844 | } |
8845 | ||
08388c79 DE |
8846 | static int |
8847 | remote_search_memory (struct target_ops* ops, | |
8848 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8849 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8850 | CORE_ADDR *found_addrp) | |
8851 | { | |
f5656ead | 8852 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
8853 | struct remote_state *rs = get_remote_state (); |
8854 | int max_size = get_memory_write_packet_size (); | |
8855 | struct packet_config *packet = | |
8856 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8857 | /* Number of packet bytes used to encode the pattern; |
8858 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8859 | int escaped_pattern_len; |
0df8b418 | 8860 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8861 | int used_pattern_len; |
8862 | int i; | |
8863 | int found; | |
8864 | ULONGEST found_addr; | |
8865 | ||
8866 | /* Don't go to the target if we don't have to. | |
8867 | This is done before checking packet->support to avoid the possibility that | |
8868 | a success for this edge case means the facility works in general. */ | |
8869 | if (pattern_len > search_space_len) | |
8870 | return 0; | |
8871 | if (pattern_len == 0) | |
8872 | { | |
8873 | *found_addrp = start_addr; | |
8874 | return 1; | |
8875 | } | |
8876 | ||
8877 | /* If we already know the packet isn't supported, fall back to the simple | |
8878 | way of searching memory. */ | |
8879 | ||
8880 | if (packet->support == PACKET_DISABLE) | |
8881 | { | |
8882 | /* Target doesn't provided special support, fall back and use the | |
8883 | standard support (copy memory and do the search here). */ | |
8884 | return simple_search_memory (ops, start_addr, search_space_len, | |
8885 | pattern, pattern_len, found_addrp); | |
8886 | } | |
8887 | ||
8888 | /* Insert header. */ | |
8889 | i = snprintf (rs->buf, max_size, | |
8890 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8891 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8892 | phex_nz (search_space_len, sizeof (search_space_len))); |
8893 | max_size -= (i + 1); | |
8894 | ||
8895 | /* Escape as much data as fits into rs->buf. */ | |
8896 | escaped_pattern_len = | |
8897 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8898 | &used_pattern_len, max_size); | |
8899 | ||
8900 | /* Bail if the pattern is too large. */ | |
8901 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8902 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8903 | |
8904 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8905 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8906 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8907 | { | |
8908 | /* The request may not have worked because the command is not | |
8909 | supported. If so, fall back to the simple way. */ | |
8910 | if (packet->support == PACKET_DISABLE) | |
8911 | { | |
8912 | return simple_search_memory (ops, start_addr, search_space_len, | |
8913 | pattern, pattern_len, found_addrp); | |
8914 | } | |
8915 | return -1; | |
8916 | } | |
8917 | ||
8918 | if (rs->buf[0] == '0') | |
8919 | found = 0; | |
8920 | else if (rs->buf[0] == '1') | |
8921 | { | |
8922 | found = 1; | |
8923 | if (rs->buf[1] != ',') | |
10e0fa18 | 8924 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8925 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8926 | *found_addrp = found_addr; | |
8927 | } | |
8928 | else | |
10e0fa18 | 8929 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8930 | |
8931 | return found; | |
8932 | } | |
8933 | ||
96baa820 JM |
8934 | static void |
8935 | remote_rcmd (char *command, | |
d9fcf2fb | 8936 | struct ui_file *outbuf) |
96baa820 | 8937 | { |
d01949b6 | 8938 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8939 | char *p = rs->buf; |
96baa820 JM |
8940 | |
8941 | if (!remote_desc) | |
8a3fe4f8 | 8942 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8943 | |
23860348 | 8944 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8945 | if (command == NULL) |
8946 | command = ""; | |
8947 | ||
23860348 | 8948 | /* The query prefix. */ |
2e9f7625 DJ |
8949 | strcpy (rs->buf, "qRcmd,"); |
8950 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8951 | |
3e43a32a MS |
8952 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8953 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8954 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8955 | |
23860348 | 8956 | /* Encode the actual command. */ |
cfd77fa1 | 8957 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8958 | |
6d820c5c | 8959 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8960 | error (_("Communication problem with target.")); |
96baa820 JM |
8961 | |
8962 | /* get/display the response */ | |
8963 | while (1) | |
8964 | { | |
2e9f7625 DJ |
8965 | char *buf; |
8966 | ||
00bf0b85 | 8967 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8968 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 8969 | rs->buf[0] = '\0'; |
5b37825d PW |
8970 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
8971 | { | |
8972 | /* Timeout. Continue to (try to) read responses. | |
8973 | This is better than stopping with an error, assuming the stub | |
8974 | is still executing the (long) monitor command. | |
8975 | If needed, the user can interrupt gdb using C-c, obtaining | |
8976 | an effect similar to stop on timeout. */ | |
8977 | continue; | |
8978 | } | |
2e9f7625 | 8979 | buf = rs->buf; |
96baa820 | 8980 | if (buf[0] == '\0') |
8a3fe4f8 | 8981 | error (_("Target does not support this command.")); |
96baa820 JM |
8982 | if (buf[0] == 'O' && buf[1] != 'K') |
8983 | { | |
23860348 | 8984 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8985 | continue; |
8986 | } | |
8987 | if (strcmp (buf, "OK") == 0) | |
8988 | break; | |
7be570e7 JM |
8989 | if (strlen (buf) == 3 && buf[0] == 'E' |
8990 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8991 | { | |
8a3fe4f8 | 8992 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8993 | } |
96baa820 JM |
8994 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8995 | { | |
8996 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8997 | |
96baa820 JM |
8998 | fputc_unfiltered (c, outbuf); |
8999 | } | |
9000 | break; | |
9001 | } | |
9002 | } | |
9003 | ||
fd79ecee DJ |
9004 | static VEC(mem_region_s) * |
9005 | remote_memory_map (struct target_ops *ops) | |
9006 | { | |
9007 | VEC(mem_region_s) *result = NULL; | |
9008 | char *text = target_read_stralloc (¤t_target, | |
9009 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9010 | ||
9011 | if (text) | |
9012 | { | |
9013 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 9014 | |
fd79ecee DJ |
9015 | result = parse_memory_map (text); |
9016 | do_cleanups (back_to); | |
9017 | } | |
9018 | ||
9019 | return result; | |
9020 | } | |
9021 | ||
c906108c | 9022 | static void |
fba45db2 | 9023 | packet_command (char *args, int from_tty) |
c906108c | 9024 | { |
d01949b6 | 9025 | struct remote_state *rs = get_remote_state (); |
c906108c | 9026 | |
c5aa993b | 9027 | if (!remote_desc) |
8a3fe4f8 | 9028 | error (_("command can only be used with remote target")); |
c906108c | 9029 | |
c5aa993b | 9030 | if (!args) |
8a3fe4f8 | 9031 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
9032 | |
9033 | puts_filtered ("sending: "); | |
9034 | print_packet (args); | |
9035 | puts_filtered ("\n"); | |
9036 | putpkt (args); | |
9037 | ||
6d820c5c | 9038 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 9039 | puts_filtered ("received: "); |
6d820c5c | 9040 | print_packet (rs->buf); |
c906108c SS |
9041 | puts_filtered ("\n"); |
9042 | } | |
9043 | ||
9044 | #if 0 | |
23860348 | 9045 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 9046 | |
a14ed312 | 9047 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 9048 | |
a14ed312 | 9049 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 9050 | |
a14ed312 | 9051 | static void threadalive_test (char *cmd, int tty); |
c906108c | 9052 | |
a14ed312 | 9053 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 9054 | |
23860348 | 9055 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 9056 | |
a14ed312 | 9057 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 9058 | |
23860348 | 9059 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 9060 | |
a14ed312 | 9061 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 9062 | |
a14ed312 | 9063 | static void init_remote_threadtests (void); |
c906108c | 9064 | |
23860348 | 9065 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
9066 | |
9067 | static void | |
fba45db2 | 9068 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
9069 | { |
9070 | int sample_thread = SAMPLE_THREAD; | |
9071 | ||
a3f17187 | 9072 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 9073 | set_general_thread (sample_thread); |
c906108c SS |
9074 | } |
9075 | ||
9076 | ||
9077 | static void | |
fba45db2 | 9078 | threadalive_test (char *cmd, int tty) |
c906108c SS |
9079 | { |
9080 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
9081 | int pid = ptid_get_pid (inferior_ptid); |
9082 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 9083 | |
79d7f229 | 9084 | if (remote_thread_alive (ptid)) |
c906108c SS |
9085 | printf_filtered ("PASS: Thread alive test\n"); |
9086 | else | |
9087 | printf_filtered ("FAIL: Thread alive test\n"); | |
9088 | } | |
9089 | ||
23860348 | 9090 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
9091 | |
9092 | void | |
fba45db2 | 9093 | output_threadid (char *title, threadref *ref) |
c906108c SS |
9094 | { |
9095 | char hexid[20]; | |
9096 | ||
23860348 | 9097 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
9098 | hexid[16] = 0; |
9099 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9100 | } | |
9101 | ||
9102 | static void | |
fba45db2 | 9103 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
9104 | { |
9105 | int startflag = 1; | |
9106 | threadref nextthread; | |
9107 | int done, result_count; | |
9108 | threadref threadlist[3]; | |
9109 | ||
9110 | printf_filtered ("Remote Threadlist test\n"); | |
9111 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9112 | &result_count, &threadlist[0])) | |
9113 | printf_filtered ("FAIL: threadlist test\n"); | |
9114 | else | |
9115 | { | |
9116 | threadref *scan = threadlist; | |
9117 | threadref *limit = scan + result_count; | |
9118 | ||
9119 | while (scan < limit) | |
9120 | output_threadid (" thread ", scan++); | |
9121 | } | |
9122 | } | |
9123 | ||
9124 | void | |
fba45db2 | 9125 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9126 | { |
9127 | output_threadid ("Threadid: ", &info->threadid); | |
9128 | printf_filtered ("Name: %s\n ", info->shortname); | |
9129 | printf_filtered ("State: %s\n", info->display); | |
9130 | printf_filtered ("other: %s\n\n", info->more_display); | |
9131 | } | |
9132 | ||
9133 | int | |
fba45db2 | 9134 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9135 | { |
9136 | int result; | |
9137 | int set; | |
9138 | struct gdb_ext_thread_info threadinfo; | |
9139 | ||
9140 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9141 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9142 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9143 | display_thread_info (&threadinfo); | |
9144 | return result; | |
9145 | } | |
9146 | ||
9147 | static void | |
fba45db2 | 9148 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9149 | { |
9150 | int athread = SAMPLE_THREAD; | |
9151 | threadref thread; | |
9152 | int set; | |
9153 | ||
9154 | int_to_threadref (&thread, athread); | |
9155 | printf_filtered ("Remote Threadinfo test\n"); | |
9156 | if (!get_and_display_threadinfo (&thread)) | |
9157 | printf_filtered ("FAIL cannot get thread info\n"); | |
9158 | } | |
9159 | ||
9160 | static int | |
fba45db2 | 9161 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9162 | { |
9163 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9164 | return get_and_display_threadinfo (ref); | |
9165 | } | |
9166 | ||
9167 | static void | |
fba45db2 | 9168 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9169 | { |
9170 | printf_filtered ("Remote Threadlist update test\n"); | |
9171 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9172 | } | |
9173 | ||
9174 | static void | |
9175 | init_remote_threadtests (void) | |
9176 | { | |
3e43a32a MS |
9177 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9178 | _("Fetch and print the remote list of " | |
9179 | "thread identifiers, one pkt only")); | |
c906108c | 9180 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9181 | _("Fetch and display info about one thread")); |
c906108c | 9182 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9183 | _("Test setting to a different thread")); |
c906108c | 9184 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9185 | _("Iterate through updating all remote thread info")); |
c906108c | 9186 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9187 | _(" Remote thread alive test ")); |
c906108c SS |
9188 | } |
9189 | ||
9190 | #endif /* 0 */ | |
9191 | ||
f3fb8c85 MS |
9192 | /* Convert a thread ID to a string. Returns the string in a static |
9193 | buffer. */ | |
9194 | ||
9195 | static char * | |
117de6a9 | 9196 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9197 | { |
79d7f229 | 9198 | static char buf[64]; |
82f73884 | 9199 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9200 | |
7cee1e54 PA |
9201 | if (ptid_equal (ptid, null_ptid)) |
9202 | return normal_pid_to_str (ptid); | |
9203 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9204 | { |
9205 | /* Printing an inferior target id. */ | |
9206 | ||
9207 | /* When multi-process extensions are off, there's no way in the | |
9208 | remote protocol to know the remote process id, if there's any | |
9209 | at all. There's one exception --- when we're connected with | |
9210 | target extended-remote, and we manually attached to a process | |
9211 | with "attach PID". We don't record anywhere a flag that | |
9212 | allows us to distinguish that case from the case of | |
9213 | connecting with extended-remote and the stub already being | |
9214 | attached to a process, and reporting yes to qAttached, hence | |
9215 | no smart special casing here. */ | |
9216 | if (!remote_multi_process_p (rs)) | |
9217 | { | |
9218 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9219 | return buf; | |
9220 | } | |
9221 | ||
9222 | return normal_pid_to_str (ptid); | |
82f73884 | 9223 | } |
ecd0ada5 | 9224 | else |
79d7f229 | 9225 | { |
ecd0ada5 PA |
9226 | if (ptid_equal (magic_null_ptid, ptid)) |
9227 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9228 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9229 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9230 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9231 | else | |
9232 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9233 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9234 | return buf; |
9235 | } | |
f3fb8c85 MS |
9236 | } |
9237 | ||
38691318 KB |
9238 | /* Get the address of the thread local variable in OBJFILE which is |
9239 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9240 | ||
9241 | static CORE_ADDR | |
117de6a9 PA |
9242 | remote_get_thread_local_address (struct target_ops *ops, |
9243 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9244 | { |
444abaca | 9245 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9246 | { |
9247 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9248 | char *p = rs->buf; |
82f73884 | 9249 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9250 | enum packet_result result; |
38691318 KB |
9251 | |
9252 | strcpy (p, "qGetTLSAddr:"); | |
9253 | p += strlen (p); | |
82f73884 | 9254 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9255 | *p++ = ','; |
9256 | p += hexnumstr (p, offset); | |
9257 | *p++ = ','; | |
9258 | p += hexnumstr (p, lm); | |
9259 | *p++ = '\0'; | |
9260 | ||
6d820c5c DJ |
9261 | putpkt (rs->buf); |
9262 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9263 | result = packet_ok (rs->buf, |
9264 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9265 | if (result == PACKET_OK) |
38691318 KB |
9266 | { |
9267 | ULONGEST result; | |
9268 | ||
6d820c5c | 9269 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9270 | return result; |
9271 | } | |
571dd617 | 9272 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9273 | throw_error (TLS_GENERIC_ERROR, |
9274 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9275 | else |
109c3e39 AC |
9276 | throw_error (TLS_GENERIC_ERROR, |
9277 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9278 | } |
9279 | else | |
109c3e39 AC |
9280 | throw_error (TLS_GENERIC_ERROR, |
9281 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9282 | /* Not reached. */ |
9283 | return 0; | |
9284 | } | |
9285 | ||
711e434b PM |
9286 | /* Provide thread local base, i.e. Thread Information Block address. |
9287 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9288 | ||
70221824 | 9289 | static int |
711e434b PM |
9290 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9291 | { | |
9292 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9293 | { | |
9294 | struct remote_state *rs = get_remote_state (); | |
9295 | char *p = rs->buf; | |
9296 | char *endp = rs->buf + get_remote_packet_size (); | |
9297 | enum packet_result result; | |
9298 | ||
9299 | strcpy (p, "qGetTIBAddr:"); | |
9300 | p += strlen (p); | |
9301 | p = write_ptid (p, endp, ptid); | |
9302 | *p++ = '\0'; | |
9303 | ||
9304 | putpkt (rs->buf); | |
9305 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9306 | result = packet_ok (rs->buf, | |
9307 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9308 | if (result == PACKET_OK) | |
9309 | { | |
9310 | ULONGEST result; | |
9311 | ||
9312 | unpack_varlen_hex (rs->buf, &result); | |
9313 | if (addr) | |
9314 | *addr = (CORE_ADDR) result; | |
9315 | return 1; | |
9316 | } | |
9317 | else if (result == PACKET_UNKNOWN) | |
9318 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9319 | else | |
9320 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9321 | } | |
9322 | else | |
9323 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9324 | /* Not reached. */ | |
9325 | return 0; | |
9326 | } | |
9327 | ||
29709017 DJ |
9328 | /* Support for inferring a target description based on the current |
9329 | architecture and the size of a 'g' packet. While the 'g' packet | |
9330 | can have any size (since optional registers can be left off the | |
9331 | end), some sizes are easily recognizable given knowledge of the | |
9332 | approximate architecture. */ | |
9333 | ||
9334 | struct remote_g_packet_guess | |
9335 | { | |
9336 | int bytes; | |
9337 | const struct target_desc *tdesc; | |
9338 | }; | |
9339 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9340 | DEF_VEC_O(remote_g_packet_guess_s); | |
9341 | ||
9342 | struct remote_g_packet_data | |
9343 | { | |
9344 | VEC(remote_g_packet_guess_s) *guesses; | |
9345 | }; | |
9346 | ||
9347 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9348 | ||
9349 | static void * | |
9350 | remote_g_packet_data_init (struct obstack *obstack) | |
9351 | { | |
9352 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9353 | } | |
9354 | ||
9355 | void | |
9356 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9357 | const struct target_desc *tdesc) | |
9358 | { | |
9359 | struct remote_g_packet_data *data | |
9360 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9361 | struct remote_g_packet_guess new_guess, *guess; | |
9362 | int ix; | |
9363 | ||
9364 | gdb_assert (tdesc != NULL); | |
9365 | ||
9366 | for (ix = 0; | |
9367 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9368 | ix++) | |
9369 | if (guess->bytes == bytes) | |
9370 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9371 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9372 | bytes); |
9373 | ||
9374 | new_guess.bytes = bytes; | |
9375 | new_guess.tdesc = tdesc; | |
9376 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9377 | } | |
9378 | ||
d962ef82 DJ |
9379 | /* Return 1 if remote_read_description would do anything on this target |
9380 | and architecture, 0 otherwise. */ | |
9381 | ||
9382 | static int | |
9383 | remote_read_description_p (struct target_ops *target) | |
9384 | { | |
9385 | struct remote_g_packet_data *data | |
f5656ead | 9386 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
d962ef82 DJ |
9387 | |
9388 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9389 | return 1; | |
9390 | ||
9391 | return 0; | |
9392 | } | |
9393 | ||
29709017 DJ |
9394 | static const struct target_desc * |
9395 | remote_read_description (struct target_ops *target) | |
9396 | { | |
9397 | struct remote_g_packet_data *data | |
f5656ead | 9398 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
29709017 | 9399 | |
d962ef82 DJ |
9400 | /* Do not try this during initial connection, when we do not know |
9401 | whether there is a running but stopped thread. */ | |
9402 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9403 | return NULL; | |
9404 | ||
29709017 DJ |
9405 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9406 | { | |
9407 | struct remote_g_packet_guess *guess; | |
9408 | int ix; | |
9409 | int bytes = send_g_packet (); | |
9410 | ||
9411 | for (ix = 0; | |
9412 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9413 | ix++) | |
9414 | if (guess->bytes == bytes) | |
9415 | return guess->tdesc; | |
9416 | ||
9417 | /* We discard the g packet. A minor optimization would be to | |
9418 | hold on to it, and fill the register cache once we have selected | |
9419 | an architecture, but it's too tricky to do safely. */ | |
9420 | } | |
9421 | ||
9422 | return NULL; | |
9423 | } | |
9424 | ||
a6b151f1 DJ |
9425 | /* Remote file transfer support. This is host-initiated I/O, not |
9426 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9427 | ||
9428 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9429 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9430 | decrease *LEFT. Otherwise raise an error. */ | |
9431 | ||
9432 | static void | |
9433 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9434 | { | |
9435 | int len = strlen (string); | |
9436 | ||
9437 | if (len > *left) | |
9438 | error (_("Packet too long for target.")); | |
9439 | ||
9440 | memcpy (*buffer, string, len); | |
9441 | *buffer += len; | |
9442 | *left -= len; | |
9443 | ||
9444 | /* NUL-terminate the buffer as a convenience, if there is | |
9445 | room. */ | |
9446 | if (*left) | |
9447 | **buffer = '\0'; | |
9448 | } | |
9449 | ||
9450 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9451 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9452 | decrease *LEFT. Otherwise raise an error. */ | |
9453 | ||
9454 | static void | |
9455 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9456 | int len) | |
9457 | { | |
9458 | if (2 * len > *left) | |
9459 | error (_("Packet too long for target.")); | |
9460 | ||
9461 | bin2hex (bytes, *buffer, len); | |
9462 | *buffer += 2 * len; | |
9463 | *left -= 2 * len; | |
9464 | ||
9465 | /* NUL-terminate the buffer as a convenience, if there is | |
9466 | room. */ | |
9467 | if (*left) | |
9468 | **buffer = '\0'; | |
9469 | } | |
9470 | ||
9471 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9472 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9473 | decrease *LEFT. Otherwise raise an error. */ | |
9474 | ||
9475 | static void | |
9476 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9477 | { | |
9478 | int len = hexnumlen (value); | |
9479 | ||
9480 | if (len > *left) | |
9481 | error (_("Packet too long for target.")); | |
9482 | ||
9483 | hexnumstr (*buffer, value); | |
9484 | *buffer += len; | |
9485 | *left -= len; | |
9486 | ||
9487 | /* NUL-terminate the buffer as a convenience, if there is | |
9488 | room. */ | |
9489 | if (*left) | |
9490 | **buffer = '\0'; | |
9491 | } | |
9492 | ||
9493 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9494 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9495 | was included, and *ATTACHMENT to point to the start of the annex | |
9496 | if any. The length of the packet isn't needed here; there may | |
9497 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9498 | ||
9499 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9500 | -1 is returned, the other variables may not be initialized. */ | |
9501 | ||
9502 | static int | |
9503 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9504 | int *remote_errno, char **attachment) | |
9505 | { | |
9506 | char *p, *p2; | |
9507 | ||
9508 | *remote_errno = 0; | |
9509 | *attachment = NULL; | |
9510 | ||
9511 | if (buffer[0] != 'F') | |
9512 | return -1; | |
9513 | ||
9514 | errno = 0; | |
9515 | *retcode = strtol (&buffer[1], &p, 16); | |
9516 | if (errno != 0 || p == &buffer[1]) | |
9517 | return -1; | |
9518 | ||
9519 | /* Check for ",errno". */ | |
9520 | if (*p == ',') | |
9521 | { | |
9522 | errno = 0; | |
9523 | *remote_errno = strtol (p + 1, &p2, 16); | |
9524 | if (errno != 0 || p + 1 == p2) | |
9525 | return -1; | |
9526 | p = p2; | |
9527 | } | |
9528 | ||
9529 | /* Check for ";attachment". If there is no attachment, the | |
9530 | packet should end here. */ | |
9531 | if (*p == ';') | |
9532 | { | |
9533 | *attachment = p + 1; | |
9534 | return 0; | |
9535 | } | |
9536 | else if (*p == '\0') | |
9537 | return 0; | |
9538 | else | |
9539 | return -1; | |
9540 | } | |
9541 | ||
9542 | /* Send a prepared I/O packet to the target and read its response. | |
9543 | The prepared packet is in the global RS->BUF before this function | |
9544 | is called, and the answer is there when we return. | |
9545 | ||
9546 | COMMAND_BYTES is the length of the request to send, which may include | |
9547 | binary data. WHICH_PACKET is the packet configuration to check | |
9548 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9549 | is set to the error number and -1 is returned. Otherwise the value | |
9550 | returned by the function is returned. | |
9551 | ||
9552 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9553 | attachment is expected; an error will be reported if there's a | |
9554 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9555 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9556 | attachment's length. */ | |
9557 | ||
9558 | static int | |
9559 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9560 | int *remote_errno, char **attachment, | |
9561 | int *attachment_len) | |
9562 | { | |
9563 | struct remote_state *rs = get_remote_state (); | |
9564 | int ret, bytes_read; | |
9565 | char *attachment_tmp; | |
9566 | ||
f1838a98 UW |
9567 | if (!remote_desc |
9568 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9569 | { |
9570 | *remote_errno = FILEIO_ENOSYS; | |
9571 | return -1; | |
9572 | } | |
9573 | ||
9574 | putpkt_binary (rs->buf, command_bytes); | |
9575 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9576 | ||
9577 | /* If it timed out, something is wrong. Don't try to parse the | |
9578 | buffer. */ | |
9579 | if (bytes_read < 0) | |
9580 | { | |
9581 | *remote_errno = FILEIO_EINVAL; | |
9582 | return -1; | |
9583 | } | |
9584 | ||
9585 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9586 | { | |
9587 | case PACKET_ERROR: | |
9588 | *remote_errno = FILEIO_EINVAL; | |
9589 | return -1; | |
9590 | case PACKET_UNKNOWN: | |
9591 | *remote_errno = FILEIO_ENOSYS; | |
9592 | return -1; | |
9593 | case PACKET_OK: | |
9594 | break; | |
9595 | } | |
9596 | ||
9597 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9598 | &attachment_tmp)) | |
9599 | { | |
9600 | *remote_errno = FILEIO_EINVAL; | |
9601 | return -1; | |
9602 | } | |
9603 | ||
9604 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9605 | if ((attachment_tmp == NULL && attachment != NULL) | |
9606 | || (attachment_tmp != NULL && attachment == NULL)) | |
9607 | { | |
9608 | *remote_errno = FILEIO_EINVAL; | |
9609 | return -1; | |
9610 | } | |
9611 | ||
9612 | /* If an attachment was found, it must point into the packet buffer; | |
9613 | work out how many bytes there were. */ | |
9614 | if (attachment_tmp != NULL) | |
9615 | { | |
9616 | *attachment = attachment_tmp; | |
9617 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9618 | } | |
9619 | ||
9620 | return ret; | |
9621 | } | |
9622 | ||
9623 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9624 | remote file descriptor, or -1 if an error occurs (and set | |
9625 | *REMOTE_ERRNO). */ | |
9626 | ||
9627 | static int | |
9628 | remote_hostio_open (const char *filename, int flags, int mode, | |
9629 | int *remote_errno) | |
9630 | { | |
9631 | struct remote_state *rs = get_remote_state (); | |
9632 | char *p = rs->buf; | |
9633 | int left = get_remote_packet_size () - 1; | |
9634 | ||
9635 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9636 | ||
9637 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9638 | strlen (filename)); | |
9639 | remote_buffer_add_string (&p, &left, ","); | |
9640 | ||
9641 | remote_buffer_add_int (&p, &left, flags); | |
9642 | remote_buffer_add_string (&p, &left, ","); | |
9643 | ||
9644 | remote_buffer_add_int (&p, &left, mode); | |
9645 | ||
9646 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9647 | remote_errno, NULL, NULL); | |
9648 | } | |
9649 | ||
9650 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9651 | Return the number of bytes written, or -1 if an error occurs (and | |
9652 | set *REMOTE_ERRNO). */ | |
9653 | ||
9654 | static int | |
9655 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9656 | ULONGEST offset, int *remote_errno) | |
9657 | { | |
9658 | struct remote_state *rs = get_remote_state (); | |
9659 | char *p = rs->buf; | |
9660 | int left = get_remote_packet_size (); | |
9661 | int out_len; | |
9662 | ||
9663 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9664 | ||
9665 | remote_buffer_add_int (&p, &left, fd); | |
9666 | remote_buffer_add_string (&p, &left, ","); | |
9667 | ||
9668 | remote_buffer_add_int (&p, &left, offset); | |
9669 | remote_buffer_add_string (&p, &left, ","); | |
9670 | ||
9671 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9672 | get_remote_packet_size () - (p - rs->buf)); | |
9673 | ||
9674 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9675 | remote_errno, NULL, NULL); | |
9676 | } | |
9677 | ||
9678 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9679 | Return the number of bytes read, or -1 if an error occurs (and | |
9680 | set *REMOTE_ERRNO). */ | |
9681 | ||
9682 | static int | |
9683 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9684 | ULONGEST offset, int *remote_errno) | |
9685 | { | |
9686 | struct remote_state *rs = get_remote_state (); | |
9687 | char *p = rs->buf; | |
9688 | char *attachment; | |
9689 | int left = get_remote_packet_size (); | |
9690 | int ret, attachment_len; | |
9691 | int read_len; | |
9692 | ||
9693 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9694 | ||
9695 | remote_buffer_add_int (&p, &left, fd); | |
9696 | remote_buffer_add_string (&p, &left, ","); | |
9697 | ||
9698 | remote_buffer_add_int (&p, &left, len); | |
9699 | remote_buffer_add_string (&p, &left, ","); | |
9700 | ||
9701 | remote_buffer_add_int (&p, &left, offset); | |
9702 | ||
9703 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9704 | remote_errno, &attachment, | |
9705 | &attachment_len); | |
9706 | ||
9707 | if (ret < 0) | |
9708 | return ret; | |
9709 | ||
9710 | read_len = remote_unescape_input (attachment, attachment_len, | |
9711 | read_buf, len); | |
9712 | if (read_len != ret) | |
9713 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9714 | ||
9715 | return ret; | |
9716 | } | |
9717 | ||
9718 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9719 | (and set *REMOTE_ERRNO). */ | |
9720 | ||
9721 | static int | |
9722 | remote_hostio_close (int fd, int *remote_errno) | |
9723 | { | |
9724 | struct remote_state *rs = get_remote_state (); | |
9725 | char *p = rs->buf; | |
9726 | int left = get_remote_packet_size () - 1; | |
9727 | ||
9728 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9729 | ||
9730 | remote_buffer_add_int (&p, &left, fd); | |
9731 | ||
9732 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9733 | remote_errno, NULL, NULL); | |
9734 | } | |
9735 | ||
9736 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9737 | occurs (and set *REMOTE_ERRNO). */ | |
9738 | ||
9739 | static int | |
9740 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9741 | { | |
9742 | struct remote_state *rs = get_remote_state (); | |
9743 | char *p = rs->buf; | |
9744 | int left = get_remote_packet_size () - 1; | |
9745 | ||
9746 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9747 | ||
9748 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9749 | strlen (filename)); | |
9750 | ||
9751 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9752 | remote_errno, NULL, NULL); | |
9753 | } | |
9754 | ||
b9e7b9c3 UW |
9755 | /* Read value of symbolic link FILENAME on the remote target. Return |
9756 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9757 | occurs (and set *REMOTE_ERRNO). */ | |
9758 | ||
9759 | static char * | |
9760 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9761 | { | |
9762 | struct remote_state *rs = get_remote_state (); | |
9763 | char *p = rs->buf; | |
9764 | char *attachment; | |
9765 | int left = get_remote_packet_size (); | |
9766 | int len, attachment_len; | |
9767 | int read_len; | |
9768 | char *ret; | |
9769 | ||
9770 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9771 | ||
9772 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9773 | strlen (filename)); | |
9774 | ||
9775 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9776 | remote_errno, &attachment, | |
9777 | &attachment_len); | |
9778 | ||
9779 | if (len < 0) | |
9780 | return NULL; | |
9781 | ||
9782 | ret = xmalloc (len + 1); | |
9783 | ||
9784 | read_len = remote_unescape_input (attachment, attachment_len, | |
9785 | ret, len); | |
9786 | if (read_len != len) | |
9787 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9788 | ||
9789 | ret[len] = '\0'; | |
9790 | return ret; | |
9791 | } | |
9792 | ||
a6b151f1 DJ |
9793 | static int |
9794 | remote_fileio_errno_to_host (int errnum) | |
9795 | { | |
9796 | switch (errnum) | |
9797 | { | |
9798 | case FILEIO_EPERM: | |
9799 | return EPERM; | |
9800 | case FILEIO_ENOENT: | |
9801 | return ENOENT; | |
9802 | case FILEIO_EINTR: | |
9803 | return EINTR; | |
9804 | case FILEIO_EIO: | |
9805 | return EIO; | |
9806 | case FILEIO_EBADF: | |
9807 | return EBADF; | |
9808 | case FILEIO_EACCES: | |
9809 | return EACCES; | |
9810 | case FILEIO_EFAULT: | |
9811 | return EFAULT; | |
9812 | case FILEIO_EBUSY: | |
9813 | return EBUSY; | |
9814 | case FILEIO_EEXIST: | |
9815 | return EEXIST; | |
9816 | case FILEIO_ENODEV: | |
9817 | return ENODEV; | |
9818 | case FILEIO_ENOTDIR: | |
9819 | return ENOTDIR; | |
9820 | case FILEIO_EISDIR: | |
9821 | return EISDIR; | |
9822 | case FILEIO_EINVAL: | |
9823 | return EINVAL; | |
9824 | case FILEIO_ENFILE: | |
9825 | return ENFILE; | |
9826 | case FILEIO_EMFILE: | |
9827 | return EMFILE; | |
9828 | case FILEIO_EFBIG: | |
9829 | return EFBIG; | |
9830 | case FILEIO_ENOSPC: | |
9831 | return ENOSPC; | |
9832 | case FILEIO_ESPIPE: | |
9833 | return ESPIPE; | |
9834 | case FILEIO_EROFS: | |
9835 | return EROFS; | |
9836 | case FILEIO_ENOSYS: | |
9837 | return ENOSYS; | |
9838 | case FILEIO_ENAMETOOLONG: | |
9839 | return ENAMETOOLONG; | |
9840 | } | |
9841 | return -1; | |
9842 | } | |
9843 | ||
9844 | static char * | |
9845 | remote_hostio_error (int errnum) | |
9846 | { | |
9847 | int host_error = remote_fileio_errno_to_host (errnum); | |
9848 | ||
9849 | if (host_error == -1) | |
9850 | error (_("Unknown remote I/O error %d"), errnum); | |
9851 | else | |
9852 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9853 | } | |
9854 | ||
a6b151f1 DJ |
9855 | static void |
9856 | remote_hostio_close_cleanup (void *opaque) | |
9857 | { | |
9858 | int fd = *(int *) opaque; | |
9859 | int remote_errno; | |
9860 | ||
9861 | remote_hostio_close (fd, &remote_errno); | |
9862 | } | |
9863 | ||
f1838a98 UW |
9864 | |
9865 | static void * | |
9866 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9867 | { | |
9868 | const char *filename = bfd_get_filename (abfd); | |
9869 | int fd, remote_errno; | |
9870 | int *stream; | |
9871 | ||
9872 | gdb_assert (remote_filename_p (filename)); | |
9873 | ||
9874 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9875 | if (fd == -1) | |
9876 | { | |
9877 | errno = remote_fileio_errno_to_host (remote_errno); | |
9878 | bfd_set_error (bfd_error_system_call); | |
9879 | return NULL; | |
9880 | } | |
9881 | ||
9882 | stream = xmalloc (sizeof (int)); | |
9883 | *stream = fd; | |
9884 | return stream; | |
9885 | } | |
9886 | ||
9887 | static int | |
9888 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9889 | { | |
9890 | int fd = *(int *)stream; | |
9891 | int remote_errno; | |
9892 | ||
9893 | xfree (stream); | |
9894 | ||
9895 | /* Ignore errors on close; these may happen if the remote | |
9896 | connection was already torn down. */ | |
9897 | remote_hostio_close (fd, &remote_errno); | |
9898 | ||
9899 | return 1; | |
9900 | } | |
9901 | ||
9902 | static file_ptr | |
9903 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9904 | file_ptr nbytes, file_ptr offset) | |
9905 | { | |
9906 | int fd = *(int *)stream; | |
9907 | int remote_errno; | |
9908 | file_ptr pos, bytes; | |
9909 | ||
9910 | pos = 0; | |
9911 | while (nbytes > pos) | |
9912 | { | |
9913 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9914 | offset + pos, &remote_errno); | |
9915 | if (bytes == 0) | |
9916 | /* Success, but no bytes, means end-of-file. */ | |
9917 | break; | |
9918 | if (bytes == -1) | |
9919 | { | |
9920 | errno = remote_fileio_errno_to_host (remote_errno); | |
9921 | bfd_set_error (bfd_error_system_call); | |
9922 | return -1; | |
9923 | } | |
9924 | ||
9925 | pos += bytes; | |
9926 | } | |
9927 | ||
9928 | return pos; | |
9929 | } | |
9930 | ||
9931 | static int | |
9932 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9933 | { | |
9934 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9935 | sb->st_size = INT_MAX; | |
9936 | return 0; | |
9937 | } | |
9938 | ||
9939 | int | |
9940 | remote_filename_p (const char *filename) | |
9941 | { | |
9942 | return strncmp (filename, "remote:", 7) == 0; | |
9943 | } | |
9944 | ||
9945 | bfd * | |
9946 | remote_bfd_open (const char *remote_file, const char *target) | |
9947 | { | |
64c31149 TT |
9948 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
9949 | remote_bfd_iovec_open, NULL, | |
9950 | remote_bfd_iovec_pread, | |
9951 | remote_bfd_iovec_close, | |
9952 | remote_bfd_iovec_stat); | |
9953 | ||
a4453b7e | 9954 | return abfd; |
f1838a98 UW |
9955 | } |
9956 | ||
a6b151f1 DJ |
9957 | void |
9958 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9959 | { | |
9960 | struct cleanup *back_to, *close_cleanup; | |
9961 | int retcode, fd, remote_errno, bytes, io_size; | |
9962 | FILE *file; | |
9963 | gdb_byte *buffer; | |
9964 | int bytes_in_buffer; | |
9965 | int saw_eof; | |
9966 | ULONGEST offset; | |
9967 | ||
9968 | if (!remote_desc) | |
9969 | error (_("command can only be used with remote target")); | |
9970 | ||
9971 | file = fopen (local_file, "rb"); | |
9972 | if (file == NULL) | |
9973 | perror_with_name (local_file); | |
7c8a8b04 | 9974 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9975 | |
9976 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9977 | | FILEIO_O_TRUNC), | |
9978 | 0700, &remote_errno); | |
9979 | if (fd == -1) | |
9980 | remote_hostio_error (remote_errno); | |
9981 | ||
9982 | /* Send up to this many bytes at once. They won't all fit in the | |
9983 | remote packet limit, so we'll transfer slightly fewer. */ | |
9984 | io_size = get_remote_packet_size (); | |
9985 | buffer = xmalloc (io_size); | |
9986 | make_cleanup (xfree, buffer); | |
9987 | ||
9988 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9989 | ||
9990 | bytes_in_buffer = 0; | |
9991 | saw_eof = 0; | |
9992 | offset = 0; | |
9993 | while (bytes_in_buffer || !saw_eof) | |
9994 | { | |
9995 | if (!saw_eof) | |
9996 | { | |
3e43a32a MS |
9997 | bytes = fread (buffer + bytes_in_buffer, 1, |
9998 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9999 | file); |
10000 | if (bytes == 0) | |
10001 | { | |
10002 | if (ferror (file)) | |
10003 | error (_("Error reading %s."), local_file); | |
10004 | else | |
10005 | { | |
10006 | /* EOF. Unless there is something still in the | |
10007 | buffer from the last iteration, we are done. */ | |
10008 | saw_eof = 1; | |
10009 | if (bytes_in_buffer == 0) | |
10010 | break; | |
10011 | } | |
10012 | } | |
10013 | } | |
10014 | else | |
10015 | bytes = 0; | |
10016 | ||
10017 | bytes += bytes_in_buffer; | |
10018 | bytes_in_buffer = 0; | |
10019 | ||
3e43a32a MS |
10020 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
10021 | offset, &remote_errno); | |
a6b151f1 DJ |
10022 | |
10023 | if (retcode < 0) | |
10024 | remote_hostio_error (remote_errno); | |
10025 | else if (retcode == 0) | |
10026 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10027 | else if (retcode < bytes) | |
10028 | { | |
10029 | /* Short write. Save the rest of the read data for the next | |
10030 | write. */ | |
10031 | bytes_in_buffer = bytes - retcode; | |
10032 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10033 | } | |
10034 | ||
10035 | offset += retcode; | |
10036 | } | |
10037 | ||
10038 | discard_cleanups (close_cleanup); | |
10039 | if (remote_hostio_close (fd, &remote_errno)) | |
10040 | remote_hostio_error (remote_errno); | |
10041 | ||
10042 | if (from_tty) | |
10043 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10044 | do_cleanups (back_to); | |
10045 | } | |
10046 | ||
10047 | void | |
10048 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10049 | { | |
10050 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 10051 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
10052 | FILE *file; |
10053 | gdb_byte *buffer; | |
10054 | ULONGEST offset; | |
10055 | ||
10056 | if (!remote_desc) | |
10057 | error (_("command can only be used with remote target")); | |
10058 | ||
10059 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
10060 | if (fd == -1) | |
10061 | remote_hostio_error (remote_errno); | |
10062 | ||
10063 | file = fopen (local_file, "wb"); | |
10064 | if (file == NULL) | |
10065 | perror_with_name (local_file); | |
7c8a8b04 | 10066 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
10067 | |
10068 | /* Send up to this many bytes at once. They won't all fit in the | |
10069 | remote packet limit, so we'll transfer slightly fewer. */ | |
10070 | io_size = get_remote_packet_size (); | |
10071 | buffer = xmalloc (io_size); | |
10072 | make_cleanup (xfree, buffer); | |
10073 | ||
10074 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10075 | ||
10076 | offset = 0; | |
10077 | while (1) | |
10078 | { | |
10079 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
10080 | if (bytes == 0) | |
10081 | /* Success, but no bytes, means end-of-file. */ | |
10082 | break; | |
10083 | if (bytes == -1) | |
10084 | remote_hostio_error (remote_errno); | |
10085 | ||
10086 | offset += bytes; | |
10087 | ||
10088 | bytes = fwrite (buffer, 1, bytes, file); | |
10089 | if (bytes == 0) | |
10090 | perror_with_name (local_file); | |
10091 | } | |
10092 | ||
10093 | discard_cleanups (close_cleanup); | |
10094 | if (remote_hostio_close (fd, &remote_errno)) | |
10095 | remote_hostio_error (remote_errno); | |
10096 | ||
10097 | if (from_tty) | |
10098 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10099 | do_cleanups (back_to); | |
10100 | } | |
10101 | ||
10102 | void | |
10103 | remote_file_delete (const char *remote_file, int from_tty) | |
10104 | { | |
10105 | int retcode, remote_errno; | |
10106 | ||
10107 | if (!remote_desc) | |
10108 | error (_("command can only be used with remote target")); | |
10109 | ||
10110 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
10111 | if (retcode == -1) | |
10112 | remote_hostio_error (remote_errno); | |
10113 | ||
10114 | if (from_tty) | |
10115 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10116 | } | |
10117 | ||
10118 | static void | |
10119 | remote_put_command (char *args, int from_tty) | |
10120 | { | |
10121 | struct cleanup *back_to; | |
10122 | char **argv; | |
10123 | ||
d1a41061 PP |
10124 | if (args == NULL) |
10125 | error_no_arg (_("file to put")); | |
10126 | ||
10127 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10128 | back_to = make_cleanup_freeargv (argv); |
10129 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10130 | error (_("Invalid parameters to remote put")); | |
10131 | ||
10132 | remote_file_put (argv[0], argv[1], from_tty); | |
10133 | ||
10134 | do_cleanups (back_to); | |
10135 | } | |
10136 | ||
10137 | static void | |
10138 | remote_get_command (char *args, int from_tty) | |
10139 | { | |
10140 | struct cleanup *back_to; | |
10141 | char **argv; | |
10142 | ||
d1a41061 PP |
10143 | if (args == NULL) |
10144 | error_no_arg (_("file to get")); | |
10145 | ||
10146 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10147 | back_to = make_cleanup_freeargv (argv); |
10148 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10149 | error (_("Invalid parameters to remote get")); | |
10150 | ||
10151 | remote_file_get (argv[0], argv[1], from_tty); | |
10152 | ||
10153 | do_cleanups (back_to); | |
10154 | } | |
10155 | ||
10156 | static void | |
10157 | remote_delete_command (char *args, int from_tty) | |
10158 | { | |
10159 | struct cleanup *back_to; | |
10160 | char **argv; | |
10161 | ||
d1a41061 PP |
10162 | if (args == NULL) |
10163 | error_no_arg (_("file to delete")); | |
10164 | ||
10165 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10166 | back_to = make_cleanup_freeargv (argv); |
10167 | if (argv[0] == NULL || argv[1] != NULL) | |
10168 | error (_("Invalid parameters to remote delete")); | |
10169 | ||
10170 | remote_file_delete (argv[0], from_tty); | |
10171 | ||
10172 | do_cleanups (back_to); | |
10173 | } | |
10174 | ||
10175 | static void | |
10176 | remote_command (char *args, int from_tty) | |
10177 | { | |
10178 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10179 | } | |
10180 | ||
b2175913 MS |
10181 | static int |
10182 | remote_can_execute_reverse (void) | |
10183 | { | |
40ab02ce MS |
10184 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10185 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10186 | return 1; | |
10187 | else | |
10188 | return 0; | |
b2175913 MS |
10189 | } |
10190 | ||
74531fed PA |
10191 | static int |
10192 | remote_supports_non_stop (void) | |
10193 | { | |
10194 | return 1; | |
10195 | } | |
10196 | ||
03583c20 UW |
10197 | static int |
10198 | remote_supports_disable_randomization (void) | |
10199 | { | |
10200 | /* Only supported in extended mode. */ | |
10201 | return 0; | |
10202 | } | |
10203 | ||
8a305172 PA |
10204 | static int |
10205 | remote_supports_multi_process (void) | |
10206 | { | |
10207 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10208 | |
901f9912 UW |
10209 | /* Only extended-remote handles being attached to multiple |
10210 | processes, even though plain remote can use the multi-process | |
10211 | thread id extensions, so that GDB knows the target process's | |
10212 | PID. */ | |
10213 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10214 | } |
10215 | ||
70221824 | 10216 | static int |
782b2b07 SS |
10217 | remote_supports_cond_tracepoints (void) |
10218 | { | |
10219 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10220 | |
782b2b07 SS |
10221 | return rs->cond_tracepoints; |
10222 | } | |
10223 | ||
3788aec7 LM |
10224 | static int |
10225 | remote_supports_cond_breakpoints (void) | |
10226 | { | |
10227 | struct remote_state *rs = get_remote_state (); | |
10228 | ||
10229 | return rs->cond_breakpoints; | |
10230 | } | |
10231 | ||
70221824 | 10232 | static int |
7a697b8d SS |
10233 | remote_supports_fast_tracepoints (void) |
10234 | { | |
10235 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10236 | |
7a697b8d SS |
10237 | return rs->fast_tracepoints; |
10238 | } | |
10239 | ||
0fb4aa4b PA |
10240 | static int |
10241 | remote_supports_static_tracepoints (void) | |
10242 | { | |
10243 | struct remote_state *rs = get_remote_state (); | |
10244 | ||
10245 | return rs->static_tracepoints; | |
10246 | } | |
10247 | ||
1e4d1764 YQ |
10248 | static int |
10249 | remote_supports_install_in_trace (void) | |
10250 | { | |
10251 | struct remote_state *rs = get_remote_state (); | |
10252 | ||
10253 | return rs->install_in_trace; | |
10254 | } | |
10255 | ||
d248b706 KY |
10256 | static int |
10257 | remote_supports_enable_disable_tracepoint (void) | |
10258 | { | |
10259 | struct remote_state *rs = get_remote_state (); | |
10260 | ||
10261 | return rs->enable_disable_tracepoints; | |
10262 | } | |
10263 | ||
3065dfb6 SS |
10264 | static int |
10265 | remote_supports_string_tracing (void) | |
10266 | { | |
10267 | struct remote_state *rs = get_remote_state (); | |
10268 | ||
10269 | return rs->string_tracing; | |
10270 | } | |
10271 | ||
d3ce09f5 SS |
10272 | static int |
10273 | remote_can_run_breakpoint_commands (void) | |
10274 | { | |
10275 | struct remote_state *rs = get_remote_state (); | |
10276 | ||
10277 | return rs->breakpoint_commands; | |
10278 | } | |
10279 | ||
35b1e5cc | 10280 | static void |
ad91cd99 | 10281 | remote_trace_init (void) |
35b1e5cc SS |
10282 | { |
10283 | putpkt ("QTinit"); | |
10284 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10285 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10286 | error (_("Target does not support this command.")); |
10287 | } | |
10288 | ||
10289 | static void free_actions_list (char **actions_list); | |
10290 | static void free_actions_list_cleanup_wrapper (void *); | |
10291 | static void | |
10292 | free_actions_list_cleanup_wrapper (void *al) | |
10293 | { | |
10294 | free_actions_list (al); | |
10295 | } | |
10296 | ||
10297 | static void | |
10298 | free_actions_list (char **actions_list) | |
10299 | { | |
10300 | int ndx; | |
10301 | ||
10302 | if (actions_list == 0) | |
10303 | return; | |
10304 | ||
10305 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10306 | xfree (actions_list[ndx]); | |
10307 | ||
10308 | xfree (actions_list); | |
10309 | } | |
10310 | ||
409873ef SS |
10311 | /* Recursive routine to walk through command list including loops, and |
10312 | download packets for each command. */ | |
10313 | ||
10314 | static void | |
10315 | remote_download_command_source (int num, ULONGEST addr, | |
10316 | struct command_line *cmds) | |
10317 | { | |
10318 | struct remote_state *rs = get_remote_state (); | |
10319 | struct command_line *cmd; | |
10320 | ||
10321 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10322 | { | |
0df8b418 | 10323 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10324 | strcpy (rs->buf, "QTDPsrc:"); |
10325 | encode_source_string (num, addr, "cmd", cmd->line, | |
10326 | rs->buf + strlen (rs->buf), | |
10327 | rs->buf_size - strlen (rs->buf)); | |
10328 | putpkt (rs->buf); | |
10329 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10330 | if (strcmp (target_buf, "OK")) | |
10331 | warning (_("Target does not support source download.")); | |
10332 | ||
10333 | if (cmd->control_type == while_control | |
10334 | || cmd->control_type == while_stepping_control) | |
10335 | { | |
10336 | remote_download_command_source (num, addr, *cmd->body_list); | |
10337 | ||
0df8b418 | 10338 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10339 | strcpy (rs->buf, "QTDPsrc:"); |
10340 | encode_source_string (num, addr, "cmd", "end", | |
10341 | rs->buf + strlen (rs->buf), | |
10342 | rs->buf_size - strlen (rs->buf)); | |
10343 | putpkt (rs->buf); | |
10344 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10345 | if (strcmp (target_buf, "OK")) | |
10346 | warning (_("Target does not support source download.")); | |
10347 | } | |
10348 | } | |
10349 | } | |
10350 | ||
35b1e5cc | 10351 | static void |
e8ba3115 | 10352 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10353 | { |
bba74b36 | 10354 | #define BUF_SIZE 2048 |
e8ba3115 | 10355 | |
35b1e5cc | 10356 | CORE_ADDR tpaddr; |
409873ef | 10357 | char addrbuf[40]; |
bba74b36 | 10358 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10359 | char **tdp_actions; |
10360 | char **stepping_actions; | |
10361 | int ndx; | |
10362 | struct cleanup *old_chain = NULL; | |
10363 | struct agent_expr *aexpr; | |
10364 | struct cleanup *aexpr_chain = NULL; | |
10365 | char *pkt; | |
e8ba3115 | 10366 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10367 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10368 | |
e8ba3115 YQ |
10369 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
10370 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
10371 | tdp_actions); | |
10372 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10373 | stepping_actions); | |
10374 | ||
10375 | tpaddr = loc->address; | |
10376 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10377 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10378 | addrbuf, /* address */ | |
10379 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10380 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10381 | /* Fast tracepoints are mostly handled by the target, but we can |
10382 | tell the target how big of an instruction block should be moved | |
10383 | around. */ | |
10384 | if (b->type == bp_fast_tracepoint) | |
10385 | { | |
10386 | /* Only test for support at download time; we may not know | |
10387 | target capabilities at definition time. */ | |
10388 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10389 | { |
e8ba3115 | 10390 | int isize; |
35b1e5cc | 10391 | |
f5656ead | 10392 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
e8ba3115 | 10393 | tpaddr, &isize, NULL)) |
bba74b36 YQ |
10394 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10395 | isize); | |
35b1e5cc | 10396 | else |
e8ba3115 YQ |
10397 | /* If it passed validation at definition but fails now, |
10398 | something is very wrong. */ | |
10399 | internal_error (__FILE__, __LINE__, | |
10400 | _("Fast tracepoint not " | |
10401 | "valid during download")); | |
35b1e5cc | 10402 | } |
e8ba3115 YQ |
10403 | else |
10404 | /* Fast tracepoints are functionally identical to regular | |
10405 | tracepoints, so don't take lack of support as a reason to | |
10406 | give up on the trace run. */ | |
10407 | warning (_("Target does not support fast tracepoints, " | |
10408 | "downloading %d as regular tracepoint"), b->number); | |
10409 | } | |
10410 | else if (b->type == bp_static_tracepoint) | |
10411 | { | |
10412 | /* Only test for support at download time; we may not know | |
10413 | target capabilities at definition time. */ | |
10414 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10415 | { |
e8ba3115 | 10416 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10417 | |
e8ba3115 YQ |
10418 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10419 | strcat (buf, ":S"); | |
0fb4aa4b | 10420 | else |
e8ba3115 | 10421 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10422 | } |
e8ba3115 YQ |
10423 | else |
10424 | /* Fast tracepoints are functionally identical to regular | |
10425 | tracepoints, so don't take lack of support as a reason | |
10426 | to give up on the trace run. */ | |
10427 | error (_("Target does not support static tracepoints")); | |
10428 | } | |
10429 | /* If the tracepoint has a conditional, make it into an agent | |
10430 | expression and append to the definition. */ | |
10431 | if (loc->cond) | |
10432 | { | |
10433 | /* Only test support at download time, we may not know target | |
10434 | capabilities at definition time. */ | |
10435 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10436 | { |
e8ba3115 YQ |
10437 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10438 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10439 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10440 | aexpr->len); | |
e8ba3115 YQ |
10441 | pkt = buf + strlen (buf); |
10442 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10443 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10444 | *pkt = '\0'; | |
10445 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10446 | } |
e8ba3115 YQ |
10447 | else |
10448 | warning (_("Target does not support conditional tracepoints, " | |
10449 | "ignoring tp %d cond"), b->number); | |
10450 | } | |
35b1e5cc | 10451 | |
d9b3f62e | 10452 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10453 | strcat (buf, "-"); |
10454 | putpkt (buf); | |
10455 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10456 | if (strcmp (target_buf, "OK")) | |
10457 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10458 | |
e8ba3115 YQ |
10459 | /* do_single_steps (t); */ |
10460 | if (tdp_actions) | |
10461 | { | |
10462 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10463 | { |
e8ba3115 | 10464 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10465 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10466 | b->number, addrbuf, /* address */ | |
10467 | tdp_actions[ndx], | |
10468 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10469 | ? '-' : 0)); | |
e8ba3115 YQ |
10470 | putpkt (buf); |
10471 | remote_get_noisy_reply (&target_buf, | |
10472 | &target_buf_size); | |
10473 | if (strcmp (target_buf, "OK")) | |
10474 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10475 | } |
e8ba3115 YQ |
10476 | } |
10477 | if (stepping_actions) | |
10478 | { | |
10479 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10480 | { |
e8ba3115 | 10481 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10482 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10483 | b->number, addrbuf, /* address */ | |
10484 | ((ndx == 0) ? "S" : ""), | |
10485 | stepping_actions[ndx], | |
10486 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10487 | putpkt (buf); |
10488 | remote_get_noisy_reply (&target_buf, | |
10489 | &target_buf_size); | |
10490 | if (strcmp (target_buf, "OK")) | |
10491 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10492 | } |
e8ba3115 | 10493 | } |
409873ef | 10494 | |
e8ba3115 YQ |
10495 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10496 | == PACKET_ENABLE) | |
10497 | { | |
10498 | if (b->addr_string) | |
409873ef | 10499 | { |
e8ba3115 YQ |
10500 | strcpy (buf, "QTDPsrc:"); |
10501 | encode_source_string (b->number, loc->address, | |
10502 | "at", b->addr_string, buf + strlen (buf), | |
10503 | 2048 - strlen (buf)); | |
409873ef | 10504 | |
e8ba3115 YQ |
10505 | putpkt (buf); |
10506 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10507 | if (strcmp (target_buf, "OK")) | |
10508 | warning (_("Target does not support source download.")); | |
409873ef | 10509 | } |
e8ba3115 YQ |
10510 | if (b->cond_string) |
10511 | { | |
10512 | strcpy (buf, "QTDPsrc:"); | |
10513 | encode_source_string (b->number, loc->address, | |
10514 | "cond", b->cond_string, buf + strlen (buf), | |
10515 | 2048 - strlen (buf)); | |
10516 | putpkt (buf); | |
10517 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10518 | if (strcmp (target_buf, "OK")) | |
10519 | warning (_("Target does not support source download.")); | |
10520 | } | |
10521 | remote_download_command_source (b->number, loc->address, | |
10522 | breakpoint_commands (b)); | |
35b1e5cc | 10523 | } |
e8ba3115 YQ |
10524 | |
10525 | do_cleanups (old_chain); | |
35b1e5cc SS |
10526 | } |
10527 | ||
1e4d1764 YQ |
10528 | static int |
10529 | remote_can_download_tracepoint (void) | |
10530 | { | |
1e51243a PA |
10531 | struct remote_state *rs = get_remote_state (); |
10532 | struct trace_status *ts; | |
10533 | int status; | |
10534 | ||
10535 | /* Don't try to install tracepoints until we've relocated our | |
10536 | symbols, and fetched and merged the target's tracepoint list with | |
10537 | ours. */ | |
10538 | if (rs->starting_up) | |
10539 | return 0; | |
10540 | ||
10541 | ts = current_trace_status (); | |
10542 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10543 | |
10544 | if (status == -1 || !ts->running_known || !ts->running) | |
10545 | return 0; | |
10546 | ||
10547 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10548 | installing tracepoint in trace, we have to return. */ | |
10549 | if (!remote_supports_install_in_trace ()) | |
10550 | return 0; | |
10551 | ||
10552 | return 1; | |
10553 | } | |
10554 | ||
10555 | ||
35b1e5cc SS |
10556 | static void |
10557 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10558 | { | |
10559 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10560 | char *p; |
35b1e5cc | 10561 | |
bba74b36 YQ |
10562 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10563 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10564 | tsv->builtin); | |
00bf0b85 SS |
10565 | p = rs->buf + strlen (rs->buf); |
10566 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10567 | error (_("Trace state variable name too long for tsv definition packet")); | |
10568 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10569 | *p++ = '\0'; | |
35b1e5cc SS |
10570 | putpkt (rs->buf); |
10571 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10572 | if (*target_buf == '\0') |
10573 | error (_("Target does not support this command.")); | |
10574 | if (strcmp (target_buf, "OK") != 0) | |
10575 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10576 | } |
10577 | ||
d248b706 KY |
10578 | static void |
10579 | remote_enable_tracepoint (struct bp_location *location) | |
10580 | { | |
10581 | struct remote_state *rs = get_remote_state (); | |
10582 | char addr_buf[40]; | |
10583 | ||
10584 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10585 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10586 | location->owner->number, addr_buf); | |
d248b706 KY |
10587 | putpkt (rs->buf); |
10588 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10589 | if (*rs->buf == '\0') | |
10590 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10591 | if (strcmp (rs->buf, "OK") != 0) | |
10592 | error (_("Error on target while enabling tracepoint.")); | |
10593 | } | |
10594 | ||
10595 | static void | |
10596 | remote_disable_tracepoint (struct bp_location *location) | |
10597 | { | |
10598 | struct remote_state *rs = get_remote_state (); | |
10599 | char addr_buf[40]; | |
10600 | ||
10601 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10602 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10603 | location->owner->number, addr_buf); | |
d248b706 KY |
10604 | putpkt (rs->buf); |
10605 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10606 | if (*rs->buf == '\0') | |
10607 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10608 | if (strcmp (rs->buf, "OK") != 0) | |
10609 | error (_("Error on target while disabling tracepoint.")); | |
10610 | } | |
10611 | ||
35b1e5cc | 10612 | static void |
ad91cd99 | 10613 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10614 | { |
10615 | asection *s; | |
81b9b86e | 10616 | bfd *abfd = NULL; |
35b1e5cc | 10617 | bfd_size_type size; |
608bcef2 | 10618 | bfd_vma vma; |
35b1e5cc | 10619 | int anysecs = 0; |
c2fa21f1 | 10620 | int offset = 0; |
35b1e5cc SS |
10621 | |
10622 | if (!exec_bfd) | |
10623 | return; /* No information to give. */ | |
10624 | ||
10625 | strcpy (target_buf, "QTro"); | |
10626 | for (s = exec_bfd->sections; s; s = s->next) | |
10627 | { | |
10628 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10629 | int sec_length; |
35b1e5cc SS |
10630 | |
10631 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10632 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10633 | (s->flags & SEC_READONLY) == 0) |
10634 | continue; | |
10635 | ||
10636 | anysecs = 1; | |
81b9b86e | 10637 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10638 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10639 | sprintf_vma (tmp1, vma); |
10640 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10641 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10642 | if (offset + sec_length + 1 > target_buf_size) | |
10643 | { | |
864ac8a7 HZ |
10644 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10645 | != PACKET_ENABLE) | |
10646 | warning (_("\ | |
c2fa21f1 HZ |
10647 | Too many sections for read-only sections definition packet.")); |
10648 | break; | |
10649 | } | |
bba74b36 YQ |
10650 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10651 | tmp1, tmp2); | |
c2fa21f1 | 10652 | offset += sec_length; |
35b1e5cc SS |
10653 | } |
10654 | if (anysecs) | |
10655 | { | |
10656 | putpkt (target_buf); | |
10657 | getpkt (&target_buf, &target_buf_size, 0); | |
10658 | } | |
10659 | } | |
10660 | ||
10661 | static void | |
ad91cd99 | 10662 | remote_trace_start (void) |
35b1e5cc SS |
10663 | { |
10664 | putpkt ("QTStart"); | |
10665 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10666 | if (*target_buf == '\0') |
10667 | error (_("Target does not support this command.")); | |
10668 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10669 | error (_("Bogus reply from target: %s"), target_buf); |
10670 | } | |
10671 | ||
10672 | static int | |
00bf0b85 | 10673 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10674 | { |
953b98d1 | 10675 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10676 | char *p = NULL; |
0df8b418 | 10677 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10678 | extern int trace_regblock_size; |
67f41397 | 10679 | volatile struct gdb_exception ex; |
a744cf53 | 10680 | |
00bf0b85 SS |
10681 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10682 | ||
35b1e5cc | 10683 | putpkt ("qTStatus"); |
67f41397 JK |
10684 | |
10685 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10686 | { | |
10687 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10688 | } | |
10689 | if (ex.reason < 0) | |
10690 | { | |
10691 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10692 | return -1; | |
10693 | } | |
00bf0b85 SS |
10694 | |
10695 | /* If the remote target doesn't do tracing, flag it. */ | |
10696 | if (*p == '\0') | |
10697 | return -1; | |
35b1e5cc | 10698 | |
00bf0b85 | 10699 | /* We're working with a live target. */ |
f5911ea1 | 10700 | ts->filename = NULL; |
00bf0b85 | 10701 | |
00bf0b85 | 10702 | if (*p++ != 'T') |
35b1e5cc SS |
10703 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10704 | ||
84cebc4a YQ |
10705 | /* Function 'parse_trace_status' sets default value of each field of |
10706 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10707 | parse_trace_status (p, ts); |
10708 | ||
10709 | return ts->running; | |
35b1e5cc SS |
10710 | } |
10711 | ||
70221824 | 10712 | static void |
f196051f SS |
10713 | remote_get_tracepoint_status (struct breakpoint *bp, |
10714 | struct uploaded_tp *utp) | |
10715 | { | |
10716 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10717 | char *reply; |
10718 | struct bp_location *loc; | |
10719 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10720 | size_t size = get_remote_packet_size (); |
f196051f SS |
10721 | |
10722 | if (tp) | |
10723 | { | |
10724 | tp->base.hit_count = 0; | |
10725 | tp->traceframe_usage = 0; | |
10726 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10727 | { | |
10728 | /* If the tracepoint was never downloaded, don't go asking for | |
10729 | any status. */ | |
10730 | if (tp->number_on_target == 0) | |
10731 | continue; | |
bba74b36 YQ |
10732 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10733 | phex_nz (loc->address, 0)); | |
f196051f SS |
10734 | putpkt (rs->buf); |
10735 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10736 | if (reply && *reply) | |
10737 | { | |
10738 | if (*reply == 'V') | |
10739 | parse_tracepoint_status (reply + 1, bp, utp); | |
10740 | } | |
10741 | } | |
10742 | } | |
10743 | else if (utp) | |
10744 | { | |
10745 | utp->hit_count = 0; | |
10746 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10747 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10748 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10749 | putpkt (rs->buf); |
10750 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10751 | if (reply && *reply) | |
10752 | { | |
10753 | if (*reply == 'V') | |
10754 | parse_tracepoint_status (reply + 1, bp, utp); | |
10755 | } | |
10756 | } | |
10757 | } | |
10758 | ||
35b1e5cc | 10759 | static void |
ad91cd99 | 10760 | remote_trace_stop (void) |
35b1e5cc SS |
10761 | { |
10762 | putpkt ("QTStop"); | |
10763 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10764 | if (*target_buf == '\0') |
10765 | error (_("Target does not support this command.")); | |
10766 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10767 | error (_("Bogus reply from target: %s"), target_buf); |
10768 | } | |
10769 | ||
10770 | static int | |
10771 | remote_trace_find (enum trace_find_type type, int num, | |
10772 | ULONGEST addr1, ULONGEST addr2, | |
10773 | int *tpp) | |
10774 | { | |
10775 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10776 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10777 | char *p, *reply; |
10778 | int target_frameno = -1, target_tracept = -1; | |
10779 | ||
e6e4e701 PA |
10780 | /* Lookups other than by absolute frame number depend on the current |
10781 | trace selected, so make sure it is correct on the remote end | |
10782 | first. */ | |
10783 | if (type != tfind_number) | |
10784 | set_remote_traceframe (); | |
10785 | ||
35b1e5cc SS |
10786 | p = rs->buf; |
10787 | strcpy (p, "QTFrame:"); | |
10788 | p = strchr (p, '\0'); | |
10789 | switch (type) | |
10790 | { | |
10791 | case tfind_number: | |
bba74b36 | 10792 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10793 | break; |
10794 | case tfind_pc: | |
bba74b36 | 10795 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10796 | break; |
10797 | case tfind_tp: | |
bba74b36 | 10798 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10799 | break; |
10800 | case tfind_range: | |
bba74b36 YQ |
10801 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10802 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10803 | break; |
10804 | case tfind_outside: | |
bba74b36 YQ |
10805 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10806 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10807 | break; |
10808 | default: | |
9b20d036 | 10809 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10810 | } |
10811 | ||
10812 | putpkt (rs->buf); | |
10813 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10814 | if (*reply == '\0') |
10815 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10816 | |
10817 | while (reply && *reply) | |
10818 | switch (*reply) | |
10819 | { | |
10820 | case 'F': | |
f197e0f1 VP |
10821 | p = ++reply; |
10822 | target_frameno = (int) strtol (p, &reply, 16); | |
10823 | if (reply == p) | |
10824 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10825 | /* Don't update our remote traceframe number cache on failure |
10826 | to select a remote traceframe. */ | |
f197e0f1 VP |
10827 | if (target_frameno == -1) |
10828 | return -1; | |
35b1e5cc SS |
10829 | break; |
10830 | case 'T': | |
f197e0f1 VP |
10831 | p = ++reply; |
10832 | target_tracept = (int) strtol (p, &reply, 16); | |
10833 | if (reply == p) | |
10834 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10835 | break; |
10836 | case 'O': /* "OK"? */ | |
10837 | if (reply[1] == 'K' && reply[2] == '\0') | |
10838 | reply += 2; | |
10839 | else | |
10840 | error (_("Bogus reply from target: %s"), reply); | |
10841 | break; | |
10842 | default: | |
10843 | error (_("Bogus reply from target: %s"), reply); | |
10844 | } | |
10845 | if (tpp) | |
10846 | *tpp = target_tracept; | |
e6e4e701 PA |
10847 | |
10848 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10849 | return target_frameno; |
10850 | } | |
10851 | ||
10852 | static int | |
10853 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10854 | { | |
10855 | struct remote_state *rs = get_remote_state (); | |
10856 | char *reply; | |
10857 | ULONGEST uval; | |
10858 | ||
e6e4e701 PA |
10859 | set_remote_traceframe (); |
10860 | ||
bba74b36 | 10861 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10862 | putpkt (rs->buf); |
10863 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10864 | if (reply && *reply) | |
10865 | { | |
10866 | if (*reply == 'V') | |
10867 | { | |
10868 | unpack_varlen_hex (reply + 1, &uval); | |
10869 | *val = (LONGEST) uval; | |
10870 | return 1; | |
10871 | } | |
10872 | } | |
10873 | return 0; | |
10874 | } | |
10875 | ||
00bf0b85 | 10876 | static int |
011aacb0 | 10877 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10878 | { |
10879 | struct remote_state *rs = get_remote_state (); | |
10880 | char *p, *reply; | |
10881 | ||
10882 | p = rs->buf; | |
10883 | strcpy (p, "QTSave:"); | |
10884 | p += strlen (p); | |
10885 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10886 | error (_("Remote file name too long for trace save packet")); | |
10887 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10888 | *p++ = '\0'; | |
10889 | putpkt (rs->buf); | |
ad91cd99 | 10890 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10891 | if (*reply == '\0') |
ad91cd99 PA |
10892 | error (_("Target does not support this command.")); |
10893 | if (strcmp (reply, "OK") != 0) | |
10894 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10895 | return 0; |
10896 | } | |
10897 | ||
10898 | /* This is basically a memory transfer, but needs to be its own packet | |
10899 | because we don't know how the target actually organizes its trace | |
10900 | memory, plus we want to be able to ask for as much as possible, but | |
10901 | not be unhappy if we don't get as much as we ask for. */ | |
10902 | ||
10903 | static LONGEST | |
10904 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10905 | { | |
10906 | struct remote_state *rs = get_remote_state (); | |
10907 | char *reply; | |
10908 | char *p; | |
10909 | int rslt; | |
10910 | ||
10911 | p = rs->buf; | |
10912 | strcpy (p, "qTBuffer:"); | |
10913 | p += strlen (p); | |
10914 | p += hexnumstr (p, offset); | |
10915 | *p++ = ','; | |
10916 | p += hexnumstr (p, len); | |
10917 | *p++ = '\0'; | |
10918 | ||
10919 | putpkt (rs->buf); | |
10920 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10921 | if (reply && *reply) | |
10922 | { | |
10923 | /* 'l' by itself means we're at the end of the buffer and | |
10924 | there is nothing more to get. */ | |
10925 | if (*reply == 'l') | |
10926 | return 0; | |
10927 | ||
10928 | /* Convert the reply into binary. Limit the number of bytes to | |
10929 | convert according to our passed-in buffer size, rather than | |
10930 | what was returned in the packet; if the target is | |
10931 | unexpectedly generous and gives us a bigger reply than we | |
10932 | asked for, we don't want to crash. */ | |
10933 | rslt = hex2bin (target_buf, buf, len); | |
10934 | return rslt; | |
10935 | } | |
10936 | ||
10937 | /* Something went wrong, flag as an error. */ | |
10938 | return -1; | |
10939 | } | |
10940 | ||
35b1e5cc SS |
10941 | static void |
10942 | remote_set_disconnected_tracing (int val) | |
10943 | { | |
10944 | struct remote_state *rs = get_remote_state (); | |
10945 | ||
33da3f1c SS |
10946 | if (rs->disconnected_tracing) |
10947 | { | |
ad91cd99 PA |
10948 | char *reply; |
10949 | ||
bba74b36 | 10950 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 10951 | putpkt (rs->buf); |
ad91cd99 PA |
10952 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10953 | if (*reply == '\0') | |
33da3f1c | 10954 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10955 | if (strcmp (reply, "OK") != 0) |
10956 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10957 | } |
10958 | else if (val) | |
10959 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10960 | } |
10961 | ||
dc146f7c VP |
10962 | static int |
10963 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10964 | { | |
10965 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10966 | |
dc146f7c VP |
10967 | if (info && info->private) |
10968 | return info->private->core; | |
10969 | return -1; | |
10970 | } | |
10971 | ||
4daf5ac0 SS |
10972 | static void |
10973 | remote_set_circular_trace_buffer (int val) | |
10974 | { | |
10975 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10976 | char *reply; |
4daf5ac0 | 10977 | |
bba74b36 | 10978 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 10979 | putpkt (rs->buf); |
ad91cd99 PA |
10980 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10981 | if (*reply == '\0') | |
4daf5ac0 | 10982 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10983 | if (strcmp (reply, "OK") != 0) |
10984 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10985 | } |
10986 | ||
b3b9301e PA |
10987 | static struct traceframe_info * |
10988 | remote_traceframe_info (void) | |
10989 | { | |
10990 | char *text; | |
10991 | ||
10992 | text = target_read_stralloc (¤t_target, | |
10993 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10994 | if (text != NULL) | |
10995 | { | |
10996 | struct traceframe_info *info; | |
10997 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10998 | ||
10999 | info = parse_traceframe_info (text); | |
11000 | do_cleanups (back_to); | |
11001 | return info; | |
11002 | } | |
11003 | ||
11004 | return NULL; | |
11005 | } | |
11006 | ||
405f8e94 SS |
11007 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11008 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11009 | if the packet is not supported, and 0 if the minimum instruction | |
11010 | length is unknown. */ | |
11011 | ||
11012 | static int | |
11013 | remote_get_min_fast_tracepoint_insn_len (void) | |
11014 | { | |
11015 | struct remote_state *rs = get_remote_state (); | |
11016 | char *reply; | |
11017 | ||
e886a173 PA |
11018 | /* If we're not debugging a process yet, the IPA can't be |
11019 | loaded. */ | |
11020 | if (!target_has_execution) | |
11021 | return 0; | |
11022 | ||
11023 | /* Make sure the remote is pointing at the right process. */ | |
11024 | set_general_process (); | |
11025 | ||
bba74b36 | 11026 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
11027 | putpkt (rs->buf); |
11028 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11029 | if (*reply == '\0') | |
11030 | return -1; | |
11031 | else | |
11032 | { | |
11033 | ULONGEST min_insn_len; | |
11034 | ||
11035 | unpack_varlen_hex (reply, &min_insn_len); | |
11036 | ||
11037 | return (int) min_insn_len; | |
11038 | } | |
11039 | } | |
11040 | ||
f196051f SS |
11041 | static int |
11042 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
11043 | { | |
11044 | struct remote_state *rs = get_remote_state (); | |
11045 | char *reply; | |
11046 | char *buf = rs->buf; | |
11047 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11048 | int nbytes; | |
11049 | ||
11050 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11051 | if (user) | |
11052 | { | |
11053 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
11054 | nbytes = bin2hex (user, buf, 0); | |
11055 | buf += 2 * nbytes; | |
11056 | *buf++ = ';'; | |
11057 | } | |
11058 | if (notes) | |
11059 | { | |
11060 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
11061 | nbytes = bin2hex (notes, buf, 0); | |
11062 | buf += 2 * nbytes; | |
11063 | *buf++ = ';'; | |
11064 | } | |
11065 | if (stop_notes) | |
11066 | { | |
11067 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
11068 | nbytes = bin2hex (stop_notes, buf, 0); | |
11069 | buf += 2 * nbytes; | |
11070 | *buf++ = ';'; | |
11071 | } | |
11072 | /* Ensure the buffer is terminated. */ | |
11073 | *buf = '\0'; | |
11074 | ||
11075 | putpkt (rs->buf); | |
11076 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11077 | if (*reply == '\0') | |
11078 | return 0; | |
11079 | ||
11080 | if (strcmp (reply, "OK") != 0) | |
11081 | error (_("Bogus reply from target: %s"), reply); | |
11082 | ||
11083 | return 1; | |
11084 | } | |
11085 | ||
d1feda86 YQ |
11086 | static int |
11087 | remote_use_agent (int use) | |
11088 | { | |
11089 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
11090 | { | |
11091 | struct remote_state *rs = get_remote_state (); | |
11092 | ||
11093 | /* If the stub supports QAgent. */ | |
bba74b36 | 11094 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
11095 | putpkt (rs->buf); |
11096 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11097 | ||
11098 | if (strcmp (rs->buf, "OK") == 0) | |
11099 | { | |
11100 | use_agent = use; | |
11101 | return 1; | |
11102 | } | |
11103 | } | |
11104 | ||
11105 | return 0; | |
11106 | } | |
11107 | ||
11108 | static int | |
11109 | remote_can_use_agent (void) | |
11110 | { | |
11111 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11112 | } | |
11113 | ||
c906108c | 11114 | static void |
fba45db2 | 11115 | init_remote_ops (void) |
c906108c | 11116 | { |
c5aa993b | 11117 | remote_ops.to_shortname = "remote"; |
c906108c | 11118 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11119 | remote_ops.to_doc = |
c906108c | 11120 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11121 | Specify the serial device it is connected to\n\ |
11122 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11123 | remote_ops.to_open = remote_open; |
11124 | remote_ops.to_close = remote_close; | |
c906108c | 11125 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11126 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11127 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11128 | remote_ops.to_wait = remote_wait; |
11129 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11130 | remote_ops.to_store_registers = remote_store_registers; | |
11131 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 11132 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 11133 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11134 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11135 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11136 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11137 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11138 | remote_ops.to_watchpoint_addr_within_range = |
11139 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11140 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11141 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11142 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11143 | remote_ops.to_region_ok_for_hw_watchpoint |
11144 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11145 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11146 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
11147 | remote_ops.to_kill = remote_kill; |
11148 | remote_ops.to_load = generic_load; | |
c906108c | 11149 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11150 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11151 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11152 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11153 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11154 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11155 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11156 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11157 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11158 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11159 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11160 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11161 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11162 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11163 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11164 | remote_ops.to_has_memory = default_child_has_memory; | |
11165 | remote_ops.to_has_stack = default_child_has_stack; | |
11166 | remote_ops.to_has_registers = default_child_has_registers; | |
11167 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11168 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11169 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11170 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11171 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11172 | remote_ops.to_flash_erase = remote_flash_erase; |
11173 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11174 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11175 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11176 | remote_ops.to_can_async_p = remote_can_async_p; |
11177 | remote_ops.to_is_async_p = remote_is_async_p; | |
11178 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11179 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11180 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11181 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11182 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11183 | remote_ops.to_supports_disable_randomization |
11184 | = remote_supports_disable_randomization; | |
7313baad UW |
11185 | remote_ops.to_fileio_open = remote_hostio_open; |
11186 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11187 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11188 | remote_ops.to_fileio_close = remote_hostio_close; | |
11189 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11190 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11191 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11192 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11193 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11194 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11195 | remote_ops.to_trace_init = remote_trace_init; |
11196 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11197 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11198 | remote_ops.to_download_trace_state_variable |
11199 | = remote_download_trace_state_variable; | |
d248b706 KY |
11200 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11201 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11202 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11203 | remote_ops.to_trace_start = remote_trace_start; | |
11204 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11205 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11206 | remote_ops.to_trace_stop = remote_trace_stop; |
11207 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11208 | remote_ops.to_get_trace_state_variable_value |
11209 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11210 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11211 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11212 | remote_ops.to_upload_trace_state_variables |
11213 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11214 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11215 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11216 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11217 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 11218 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11219 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11220 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11221 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11222 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11223 | remote_ops.to_static_tracepoint_marker_at |
11224 | = remote_static_tracepoint_marker_at; | |
11225 | remote_ops.to_static_tracepoint_markers_by_strid | |
11226 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11227 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11228 | remote_ops.to_use_agent = remote_use_agent; |
11229 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
c906108c SS |
11230 | } |
11231 | ||
11232 | /* Set up the extended remote vector by making a copy of the standard | |
11233 | remote vector and adding to it. */ | |
11234 | ||
11235 | static void | |
fba45db2 | 11236 | init_extended_remote_ops (void) |
c906108c SS |
11237 | { |
11238 | extended_remote_ops = remote_ops; | |
11239 | ||
0f71a2f6 | 11240 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11241 | extended_remote_ops.to_longname = |
c906108c | 11242 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11243 | extended_remote_ops.to_doc = |
c906108c | 11244 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11245 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11246 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11247 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11248 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11249 | extended_remote_ops.to_detach = extended_remote_detach; |
11250 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11251 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11252 | extended_remote_ops.to_supports_disable_randomization |
11253 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11254 | } |
11255 | ||
6426a772 JM |
11256 | static int |
11257 | remote_can_async_p (void) | |
11258 | { | |
c6ebd6cf | 11259 | if (!target_async_permitted) |
75c99385 PA |
11260 | /* We only enable async when the user specifically asks for it. */ |
11261 | return 0; | |
11262 | ||
23860348 | 11263 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11264 | return serial_can_async_p (remote_desc); |
6426a772 JM |
11265 | } |
11266 | ||
11267 | static int | |
11268 | remote_is_async_p (void) | |
11269 | { | |
c6ebd6cf | 11270 | if (!target_async_permitted) |
75c99385 PA |
11271 | /* We only enable async when the user specifically asks for it. */ |
11272 | return 0; | |
11273 | ||
23860348 | 11274 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11275 | return serial_is_async_p (remote_desc); |
6426a772 JM |
11276 | } |
11277 | ||
2acceee2 JM |
11278 | /* Pass the SERIAL event on and up to the client. One day this code |
11279 | will be able to delay notifying the client of an event until the | |
23860348 | 11280 | point where an entire packet has been received. */ |
2acceee2 | 11281 | |
2bc416ba | 11282 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 11283 | void *context); |
2acceee2 JM |
11284 | static void *async_client_context; |
11285 | static serial_event_ftype remote_async_serial_handler; | |
11286 | ||
6426a772 | 11287 | static void |
819cc324 | 11288 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11289 | { |
2acceee2 JM |
11290 | /* Don't propogate error information up to the client. Instead let |
11291 | the client find out about the error by querying the target. */ | |
11292 | async_client_callback (INF_REG_EVENT, async_client_context); | |
11293 | } | |
11294 | ||
74531fed PA |
11295 | static void |
11296 | remote_async_inferior_event_handler (gdb_client_data data) | |
11297 | { | |
11298 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11299 | } | |
11300 | ||
2acceee2 | 11301 | static void |
2bc416ba | 11302 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11303 | void *context), void *context) |
2acceee2 JM |
11304 | { |
11305 | if (callback != NULL) | |
11306 | { | |
2cd58942 | 11307 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
11308 | async_client_callback = callback; |
11309 | async_client_context = context; | |
11310 | } | |
11311 | else | |
2cd58942 | 11312 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
11313 | } |
11314 | ||
5a2468f5 | 11315 | static void |
c2d11a7d | 11316 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11317 | { |
427c3a89 | 11318 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11319 | } |
11320 | ||
d471ea57 AC |
11321 | static void |
11322 | show_remote_cmd (char *args, int from_tty) | |
11323 | { | |
37a105a1 | 11324 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11325 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11326 | struct cleanup *showlist_chain; |
11327 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11328 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11329 | |
11330 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11331 | for (; list != NULL; list = list->next) | |
11332 | if (strcmp (list->name, "Z-packet") == 0) | |
11333 | continue; | |
427c3a89 DJ |
11334 | else if (list->type == not_set_cmd) |
11335 | /* Alias commands are exactly like the original, except they | |
11336 | don't have the normal type. */ | |
11337 | continue; | |
11338 | else | |
37a105a1 DJ |
11339 | { |
11340 | struct cleanup *option_chain | |
11341 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11342 | |
37a105a1 DJ |
11343 | ui_out_field_string (uiout, "name", list->name); |
11344 | ui_out_text (uiout, ": "); | |
427c3a89 | 11345 | if (list->type == show_cmd) |
5b9afe8a | 11346 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11347 | else |
11348 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11349 | /* Close the tuple. */ |
11350 | do_cleanups (option_chain); | |
11351 | } | |
427c3a89 DJ |
11352 | |
11353 | /* Close the tuple. */ | |
11354 | do_cleanups (showlist_chain); | |
d471ea57 | 11355 | } |
5a2468f5 | 11356 | |
0f71a2f6 | 11357 | |
23860348 | 11358 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11359 | static void |
11360 | remote_new_objfile (struct objfile *objfile) | |
11361 | { | |
23860348 | 11362 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 11363 | remote_check_symbols (objfile); |
dc8acb97 MS |
11364 | } |
11365 | ||
00bf0b85 SS |
11366 | /* Pull all the tracepoints defined on the target and create local |
11367 | data structures representing them. We don't want to create real | |
11368 | tracepoints yet, we don't want to mess up the user's existing | |
11369 | collection. */ | |
11370 | ||
11371 | static int | |
11372 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11373 | { |
00bf0b85 SS |
11374 | struct remote_state *rs = get_remote_state (); |
11375 | char *p; | |
d5551862 | 11376 | |
00bf0b85 SS |
11377 | /* Ask for a first packet of tracepoint definition. */ |
11378 | putpkt ("qTfP"); | |
11379 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11380 | p = rs->buf; | |
11381 | while (*p && *p != 'l') | |
d5551862 | 11382 | { |
00bf0b85 SS |
11383 | parse_tracepoint_definition (p, utpp); |
11384 | /* Ask for another packet of tracepoint definition. */ | |
11385 | putpkt ("qTsP"); | |
11386 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11387 | p = rs->buf; | |
d5551862 | 11388 | } |
00bf0b85 | 11389 | return 0; |
d5551862 SS |
11390 | } |
11391 | ||
00bf0b85 SS |
11392 | static int |
11393 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11394 | { |
00bf0b85 | 11395 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11396 | char *p; |
d5551862 | 11397 | |
00bf0b85 SS |
11398 | /* Ask for a first packet of variable definition. */ |
11399 | putpkt ("qTfV"); | |
d5551862 SS |
11400 | getpkt (&rs->buf, &rs->buf_size, 0); |
11401 | p = rs->buf; | |
00bf0b85 | 11402 | while (*p && *p != 'l') |
d5551862 | 11403 | { |
00bf0b85 SS |
11404 | parse_tsv_definition (p, utsvp); |
11405 | /* Ask for another packet of variable definition. */ | |
11406 | putpkt ("qTsV"); | |
d5551862 SS |
11407 | getpkt (&rs->buf, &rs->buf_size, 0); |
11408 | p = rs->buf; | |
11409 | } | |
00bf0b85 | 11410 | return 0; |
d5551862 SS |
11411 | } |
11412 | ||
c906108c | 11413 | void |
fba45db2 | 11414 | _initialize_remote (void) |
c906108c | 11415 | { |
ea9c271d | 11416 | struct remote_state *rs; |
9a7071a8 JB |
11417 | struct cmd_list_element *cmd; |
11418 | char *cmd_name; | |
ea9c271d | 11419 | |
0f71a2f6 | 11420 | /* architecture specific data */ |
2bc416ba | 11421 | remote_gdbarch_data_handle = |
23860348 | 11422 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11423 | remote_g_packet_data_handle = |
11424 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11425 | |
ea9c271d DJ |
11426 | /* Initialize the per-target state. At the moment there is only one |
11427 | of these, not one per target. Only one target is active at a | |
11428 | time. The default buffer size is unimportant; it will be expanded | |
11429 | whenever a larger buffer is needed. */ | |
0b83947e | 11430 | rs = get_remote_state_raw (); |
ea9c271d DJ |
11431 | rs->buf_size = 400; |
11432 | rs->buf = xmalloc (rs->buf_size); | |
11433 | ||
c906108c SS |
11434 | init_remote_ops (); |
11435 | add_target (&remote_ops); | |
11436 | ||
11437 | init_extended_remote_ops (); | |
11438 | add_target (&extended_remote_ops); | |
cce74817 | 11439 | |
dc8acb97 | 11440 | /* Hook into new objfile notification. */ |
06d3b283 | 11441 | observer_attach_new_objfile (remote_new_objfile); |
5f4cf0bb YQ |
11442 | /* We're no longer interested in notification events of an inferior |
11443 | when it exits. */ | |
11444 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
dc8acb97 | 11445 | |
b803fb0f DJ |
11446 | /* Set up signal handlers. */ |
11447 | sigint_remote_token = | |
11448 | create_async_signal_handler (async_remote_interrupt, NULL); | |
11449 | sigint_remote_twice_token = | |
6d549500 | 11450 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11451 | |
c906108c SS |
11452 | #if 0 |
11453 | init_remote_threadtests (); | |
11454 | #endif | |
11455 | ||
722247f1 | 11456 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
23860348 | 11457 | /* set/show remote ... */ |
d471ea57 | 11458 | |
1bedd215 | 11459 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11460 | Remote protocol specific variables\n\ |
11461 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11462 | the packets being used"), |
cff3e48b | 11463 | &remote_set_cmdlist, "set remote ", |
23860348 | 11464 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11465 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11466 | Remote protocol specific variables\n\ |
11467 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11468 | the packets being used"), |
cff3e48b | 11469 | &remote_show_cmdlist, "show remote ", |
23860348 | 11470 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11471 | |
1a966eab AC |
11472 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11473 | Compare section data on target to the exec file.\n\ | |
11474 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11475 | &cmdlist); |
11476 | ||
1a966eab AC |
11477 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11478 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11479 | maintenance packet TEXT\n\ |
11480 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11481 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11482 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11483 | terminating `#' character and checksum."), |
c906108c SS |
11484 | &maintenancelist); |
11485 | ||
7915a72c AC |
11486 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11487 | Set whether to send break if interrupted."), _("\ | |
11488 | Show whether to send break if interrupted."), _("\ | |
11489 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11490 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11491 | &setlist, &showlist); |
9a7071a8 JB |
11492 | cmd_name = "remotebreak"; |
11493 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11494 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11495 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11496 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11497 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11498 | ||
11499 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11500 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11501 | _("\ | |
9a7071a8 JB |
11502 | Set interrupt sequence to remote target."), _("\ |
11503 | Show interrupt sequence to remote target."), _("\ | |
11504 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11505 | NULL, show_interrupt_sequence, | |
11506 | &remote_set_cmdlist, | |
11507 | &remote_show_cmdlist); | |
11508 | ||
11509 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11510 | &interrupt_on_connect, _("\ | |
11511 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11512 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11513 | If set, interrupt sequence is sent to remote target."), | |
11514 | NULL, NULL, | |
11515 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11516 | |
23860348 | 11517 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11518 | |
1a966eab AC |
11519 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11520 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11521 | &setlist); |
1a966eab AC |
11522 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11523 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11524 | &showlist); |
11525 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11526 | set_memory_write_packet_size, _("\ |
11527 | Set the maximum number of bytes per memory-write packet.\n\ | |
11528 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11529 | default packet size. The actual limit is further reduced\n\ | |
11530 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11531 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11532 | &remote_set_cmdlist); |
11533 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11534 | set_memory_read_packet_size, _("\ |
11535 | Set the maximum number of bytes per memory-read packet.\n\ | |
11536 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11537 | default packet size. The actual limit is further reduced\n\ | |
11538 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11539 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11540 | &remote_set_cmdlist); |
11541 | add_cmd ("memory-write-packet-size", no_class, | |
11542 | show_memory_write_packet_size, | |
1a966eab | 11543 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11544 | &remote_show_cmdlist); |
11545 | add_cmd ("memory-read-packet-size", no_class, | |
11546 | show_memory_read_packet_size, | |
1a966eab | 11547 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11548 | &remote_show_cmdlist); |
c906108c | 11549 | |
b3f42336 | 11550 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11551 | &remote_hw_watchpoint_limit, _("\ |
11552 | Set the maximum number of target hardware watchpoints."), _("\ | |
11553 | Show the maximum number of target hardware watchpoints."), _("\ | |
11554 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11555 | NULL, NULL, /* FIXME: i18n: The maximum |
11556 | number of target hardware | |
11557 | watchpoints is %s. */ | |
b3f42336 | 11558 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11559 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11560 | &remote_hw_watchpoint_length_limit, _("\ | |
11561 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11562 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11563 | Specify a negative limit for unlimited."), | |
11564 | NULL, NULL, /* FIXME: i18n: The maximum | |
11565 | length (in bytes) of a target | |
11566 | hardware watchpoint is %s. */ | |
11567 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11568 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11569 | &remote_hw_breakpoint_limit, _("\ |
11570 | Set the maximum number of target hardware breakpoints."), _("\ | |
11571 | Show the maximum number of target hardware breakpoints."), _("\ | |
11572 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11573 | NULL, NULL, /* FIXME: i18n: The maximum |
11574 | number of target hardware | |
11575 | breakpoints is %s. */ | |
b3f42336 | 11576 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11577 | |
883b9c6c YQ |
11578 | add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure, |
11579 | &remote_address_size, _("\ | |
4d28ad1e AC |
11580 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
11581 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
883b9c6c YQ |
11582 | NULL, |
11583 | NULL, /* FIXME: i18n: */ | |
11584 | &setlist, &showlist); | |
c906108c | 11585 | |
444abaca | 11586 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11587 | "X", "binary-download", 1); |
0f71a2f6 | 11588 | |
444abaca | 11589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11590 | "vCont", "verbose-resume", 0); |
506fb367 | 11591 | |
89be2091 DJ |
11592 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11593 | "QPassSignals", "pass-signals", 0); | |
11594 | ||
9b224c5e PA |
11595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11596 | "QProgramSignals", "program-signals", 0); | |
11597 | ||
444abaca | 11598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11599 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11600 | |
444abaca | 11601 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11602 | "P", "set-register", 1); |
d471ea57 | 11603 | |
444abaca | 11604 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11605 | "p", "fetch-register", 1); |
b96ec7ac | 11606 | |
444abaca | 11607 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11608 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11609 | |
444abaca | 11610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11611 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11612 | |
444abaca | 11613 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11614 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11615 | |
444abaca | 11616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11617 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11618 | |
444abaca | 11619 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11620 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11621 | |
0876f84a DJ |
11622 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11623 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11624 | |
23181151 DJ |
11625 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11626 | "qXfer:features:read", "target-features", 0); | |
11627 | ||
cfa9d6d9 DJ |
11628 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11629 | "qXfer:libraries:read", "library-info", 0); | |
11630 | ||
2268b414 JK |
11631 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11632 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11633 | ||
fd79ecee DJ |
11634 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11635 | "qXfer:memory-map:read", "memory-map", 0); | |
11636 | ||
0e7f50da UW |
11637 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11638 | "qXfer:spu:read", "read-spu-object", 0); | |
11639 | ||
11640 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11641 | "qXfer:spu:write", "write-spu-object", 0); | |
11642 | ||
07e059b5 VP |
11643 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11644 | "qXfer:osdata:read", "osdata", 0); | |
11645 | ||
dc146f7c VP |
11646 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11647 | "qXfer:threads:read", "threads", 0); | |
11648 | ||
4aa995e1 PA |
11649 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11650 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11651 | ||
11652 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11653 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11654 | ||
b3b9301e PA |
11655 | add_packet_config_cmd |
11656 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11657 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11658 | ||
169081d0 TG |
11659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11660 | "qXfer:uib:read", "unwind-info-block", 0); | |
11661 | ||
444abaca | 11662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11663 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11664 | 0); |
11665 | ||
711e434b PM |
11666 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11667 | "qGetTIBAddr", "get-thread-information-block-address", | |
11668 | 0); | |
11669 | ||
40ab02ce MS |
11670 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11671 | "bc", "reverse-continue", 0); | |
11672 | ||
11673 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11674 | "bs", "reverse-step", 0); | |
11675 | ||
be2a5f71 DJ |
11676 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11677 | "qSupported", "supported-packets", 0); | |
11678 | ||
08388c79 DE |
11679 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11680 | "qSearch:memory", "search-memory", 0); | |
11681 | ||
a6b151f1 DJ |
11682 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11683 | "vFile:open", "hostio-open", 0); | |
11684 | ||
11685 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11686 | "vFile:pread", "hostio-pread", 0); | |
11687 | ||
11688 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11689 | "vFile:pwrite", "hostio-pwrite", 0); | |
11690 | ||
11691 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11692 | "vFile:close", "hostio-close", 0); | |
11693 | ||
11694 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11695 | "vFile:unlink", "hostio-unlink", 0); | |
11696 | ||
b9e7b9c3 UW |
11697 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11698 | "vFile:readlink", "hostio-readlink", 0); | |
11699 | ||
2d717e4f DJ |
11700 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11701 | "vAttach", "attach", 0); | |
11702 | ||
11703 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11704 | "vRun", "run", 0); | |
11705 | ||
a6f3e723 SL |
11706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11707 | "QStartNoAckMode", "noack", 0); | |
11708 | ||
82f73884 PA |
11709 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11710 | "vKill", "kill", 0); | |
11711 | ||
0b16c5cf PA |
11712 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11713 | "qAttached", "query-attached", 0); | |
11714 | ||
782b2b07 | 11715 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11716 | "ConditionalTracepoints", |
11717 | "conditional-tracepoints", 0); | |
3788aec7 LM |
11718 | |
11719 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
11720 | "ConditionalBreakpoints", | |
11721 | "conditional-breakpoints", 0); | |
11722 | ||
d3ce09f5 SS |
11723 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
11724 | "BreakpointCommands", | |
11725 | "breakpoint-commands", 0); | |
11726 | ||
7a697b8d SS |
11727 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11728 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11729 | |
409873ef SS |
11730 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11731 | "TracepointSource", "TracepointSource", 0); | |
11732 | ||
d914c394 SS |
11733 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11734 | "QAllow", "allow", 0); | |
11735 | ||
0fb4aa4b PA |
11736 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11737 | "StaticTracepoints", "static-tracepoints", 0); | |
11738 | ||
1e4d1764 YQ |
11739 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11740 | "InstallInTrace", "install-in-trace", 0); | |
11741 | ||
0fb4aa4b PA |
11742 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11743 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11744 | ||
78d85199 YQ |
11745 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11746 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11747 | ||
03583c20 UW |
11748 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11749 | "QDisableRandomization", "disable-randomization", 0); | |
11750 | ||
d1feda86 YQ |
11751 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
11752 | "QAgent", "agent", 0); | |
11753 | ||
37a105a1 DJ |
11754 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11755 | Z sub-packet has its own set and show commands, but users may | |
11756 | have sets to this variable in their .gdbinit files (or in their | |
11757 | documentation). */ | |
e9e68a56 | 11758 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11759 | &remote_Z_packet_detect, _("\ |
11760 | Set use of remote protocol `Z' packets"), _("\ | |
11761 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11762 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11763 | packets."), |
e9e68a56 | 11764 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11765 | show_remote_protocol_Z_packet_cmd, |
11766 | /* FIXME: i18n: Use of remote protocol | |
11767 | `Z' packets is %s. */ | |
e9e68a56 | 11768 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11769 | |
a6b151f1 DJ |
11770 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11771 | Manipulate files on the remote system\n\ | |
11772 | Transfer files to and from the remote target system."), | |
11773 | &remote_cmdlist, "remote ", | |
11774 | 0 /* allow-unknown */, &cmdlist); | |
11775 | ||
11776 | add_cmd ("put", class_files, remote_put_command, | |
11777 | _("Copy a local file to the remote system."), | |
11778 | &remote_cmdlist); | |
11779 | ||
11780 | add_cmd ("get", class_files, remote_get_command, | |
11781 | _("Copy a remote file to the local system."), | |
11782 | &remote_cmdlist); | |
11783 | ||
11784 | add_cmd ("delete", class_files, remote_delete_command, | |
11785 | _("Delete a remote file."), | |
11786 | &remote_cmdlist); | |
11787 | ||
2d717e4f DJ |
11788 | remote_exec_file = xstrdup (""); |
11789 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11790 | &remote_exec_file, _("\ | |
11791 | Set the remote pathname for \"run\""), _("\ | |
11792 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11793 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11794 | ||
449092f6 CV |
11795 | /* Eventually initialize fileio. See fileio.c */ |
11796 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11797 | |
11798 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11799 | special ptids with it set to != 0. */ | |
82f73884 PA |
11800 | magic_null_ptid = ptid_build (42000, 1, -1); |
11801 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11802 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11803 | |
11804 | target_buf_size = 2048; | |
11805 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11806 | } |
10760264 | 11807 |